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c906108c | 1 | /* Memory-access and commands for "inferior" process, for GDB. |
990a07ab | 2 | |
3666a048 | 3 | Copyright (C) 1986-2021 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
5af949e3 | 21 | #include "arch-utils.h" |
c906108c SS |
22 | #include "symtab.h" |
23 | #include "gdbtypes.h" | |
24 | #include "frame.h" | |
25 | #include "inferior.h" | |
45741a9c | 26 | #include "infrun.h" |
268a13a5 | 27 | #include "gdbsupport/environ.h" |
c906108c SS |
28 | #include "value.h" |
29 | #include "gdbcmd.h" | |
1adeb98a | 30 | #include "symfile.h" |
c906108c SS |
31 | #include "gdbcore.h" |
32 | #include "target.h" | |
33 | #include "language.h" | |
c906108c | 34 | #include "objfiles.h" |
c94fdfd0 | 35 | #include "completer.h" |
8b93c638 | 36 | #include "ui-out.h" |
36160dc4 | 37 | #include "regcache.h" |
f9418c0f | 38 | #include "reggroups.h" |
fe898f56 | 39 | #include "block.h" |
a77053c2 | 40 | #include "solib.h" |
f9418c0f | 41 | #include <ctype.h> |
76727919 | 42 | #include "observable.h" |
424163ea | 43 | #include "target-descriptions.h" |
ad842144 | 44 | #include "user-regs.h" |
a0ef4274 | 45 | #include "gdbthread.h" |
79a45b7d | 46 | #include "valprint.h" |
edb3359d | 47 | #include "inline-frame.h" |
573cda03 | 48 | #include "tracepoint.h" |
09cee04b | 49 | #include "inf-loop.h" |
f8eba3c6 | 50 | #include "linespec.h" |
243a9253 | 51 | #include "thread-fsm.h" |
3b12939d | 52 | #include "top.h" |
8980e177 | 53 | #include "interps.h" |
4a4c04f1 | 54 | #include "skip.h" |
268a13a5 | 55 | #include "gdbsupport/gdb_optional.h" |
b46a8d7c | 56 | #include "source.h" |
7f6aba03 | 57 | #include "cli/cli-style.h" |
d5551862 | 58 | |
a58dd373 EZ |
59 | /* Local functions: */ |
60 | ||
a14ed312 | 61 | static void until_next_command (int); |
c906108c | 62 | |
0b39b52e | 63 | static void step_1 (int, int, const char *); |
c906108c | 64 | |
c906108c | 65 | #define ERROR_NO_INFERIOR \ |
55f6301a | 66 | if (!target_has_execution ()) error (_("The program is not being run.")); |
c906108c | 67 | |
3e43a32a MS |
68 | /* Scratch area where string containing arguments to give to the |
69 | program will be stored by 'set args'. As soon as anything is | |
70 | stored, notice_args_set will move it into per-inferior storage. | |
1777feb0 | 71 | Arguments are separated by spaces. Empty string (pointer to '\0') |
3e43a32a | 72 | means no args. */ |
c906108c | 73 | |
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 | |
3f81c18a | 120 | fprintf_filtered (gdb_stdout, |
275f2e57 | 121 | _("Terminal for future runs of program being debugged " |
4e93ea6e | 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 ()) |
d092c5a2 SDJ |
180 | fprintf_filtered (gdb_stdout, |
181 | _("\ | |
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 SDJ |
185 | else |
186 | fprintf_filtered (gdb_stdout, | |
187 | _("Current working directory that will be used " | |
11bd012e SM |
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. */ | |
f6ac5f3d | 339 | if (background && !target->can_async_p ()) |
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 (); | |
c906108c SS |
398 | reread_symbols (); |
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) |
112e8700 SM |
441 | uiout->field_string ("execfile", exec_file); |
442 | uiout->spaces (1); | |
e5169525 | 443 | uiout->field_string ("infargs", current_inferior ()->args ()); |
112e8700 SM |
444 | uiout->text ("\n"); |
445 | uiout->flush (); | |
c906108c SS |
446 | } |
447 | ||
f6ac5f3d | 448 | run_target->create_inferior (exec_file, |
e5169525 | 449 | current_inferior ()->args (), |
f6ac5f3d PA |
450 | current_inferior ()->environment.envp (), |
451 | from_tty); | |
b3ccfe11 TT |
452 | /* to_create_inferior should push the target, so after this point we |
453 | shouldn't refer to run_target again. */ | |
454 | run_target = NULL; | |
281b533b | 455 | |
29f49a6a PA |
456 | /* We're starting off a new process. When we get out of here, in |
457 | non-stop mode, finish the state of all threads of that process, | |
458 | but leave other threads alone, as they may be stopped in internal | |
459 | events --- the frontend shouldn't see them as stopped. In | |
460 | all-stop, always finish the state of all threads, as we may be | |
461 | resuming more than just the new process. */ | |
5b6d1e4f PA |
462 | process_stratum_target *finish_target; |
463 | ptid_t finish_ptid; | |
464 | if (non_stop) | |
465 | { | |
466 | finish_target = current_inferior ()->process_target (); | |
467 | finish_ptid = ptid_t (current_inferior ()->pid); | |
468 | } | |
469 | else | |
470 | { | |
471 | finish_target = nullptr; | |
472 | finish_ptid = minus_one_ptid; | |
473 | } | |
474 | scoped_finish_thread_state finish_state (finish_target, finish_ptid); | |
29f49a6a | 475 | |
de1b3c3d PA |
476 | /* Pass zero for FROM_TTY, because at this point the "run" command |
477 | has done its thing; now we are setting up the running program. */ | |
a7aba266 | 478 | post_create_inferior (0); |
281b533b | 479 | |
4e5a4f58 JB |
480 | /* Queue a pending event so that the program stops immediately. */ |
481 | if (run_how == RUN_STOP_AT_FIRST_INSN) | |
482 | { | |
483 | thread_info *thr = inferior_thread (); | |
1edb66d8 | 484 | target_waitstatus ws; |
183be222 | 485 | ws.set_stopped (GDB_SIGNAL_0); |
1edb66d8 | 486 | thr->set_pending_waitstatus (ws); |
4e5a4f58 JB |
487 | } |
488 | ||
74d1f91e JK |
489 | /* Start the target running. Do not use -1 continuation as it would skip |
490 | breakpoint right at the entry point. */ | |
64ce06e4 | 491 | proceed (regcache_read_pc (get_current_regcache ()), GDB_SIGNAL_0); |
c906108c | 492 | |
29f49a6a PA |
493 | /* Since there was no error, there's no need to finish the thread |
494 | states here. */ | |
731f534f | 495 | finish_state.release (); |
1192f124 SM |
496 | |
497 | disable_commit_resumed.reset_and_commit (); | |
29f49a6a | 498 | } |
c906108c | 499 | |
f67a969f | 500 | static void |
0b39b52e | 501 | run_command (const char *args, int from_tty) |
f67a969f | 502 | { |
4e5a4f58 | 503 | run_command_1 (args, from_tty, RUN_NORMAL); |
f67a969f JB |
504 | } |
505 | ||
a4d5f2e0 JB |
506 | /* Start the execution of the program up until the beginning of the main |
507 | program. */ | |
508 | ||
509 | static void | |
0b39b52e | 510 | start_command (const char *args, int from_tty) |
a4d5f2e0 JB |
511 | { |
512 | /* Some languages such as Ada need to search inside the program | |
513 | minimal symbols for the location where to put the temporary | |
514 | breakpoint before starting. */ | |
515 | if (!have_minimal_symbols ()) | |
8a3fe4f8 | 516 | error (_("No symbol table loaded. Use the \"file\" command.")); |
a4d5f2e0 | 517 | |
f67a969f | 518 | /* Run the program until reaching the main procedure... */ |
4e5a4f58 JB |
519 | run_command_1 (args, from_tty, RUN_STOP_AT_MAIN); |
520 | } | |
521 | ||
522 | /* Start the execution of the program stopping at the first | |
523 | instruction. */ | |
524 | ||
525 | static void | |
0b39b52e | 526 | starti_command (const char *args, int from_tty) |
4e5a4f58 JB |
527 | { |
528 | run_command_1 (args, from_tty, RUN_STOP_AT_FIRST_INSN); | |
a4d5f2e0 JB |
529 | } |
530 | ||
8cae4b3f PA |
531 | static int |
532 | proceed_thread_callback (struct thread_info *thread, void *arg) | |
533 | { | |
74531fed PA |
534 | /* We go through all threads individually instead of compressing |
535 | into a single target `resume_all' request, because some threads | |
536 | may be stopped in internal breakpoints/events, or stopped waiting | |
537 | for its turn in the displaced stepping queue (that is, they are | |
538 | running && !executing). The target side has no idea about why | |
539 | the thread is stopped, so a `resume_all' command would resume too | |
540 | much. If/when GDB gains a way to tell the target `hold this | |
541 | thread stopped until I say otherwise', then we can optimize | |
542 | this. */ | |
00431a78 | 543 | if (thread->state != THREAD_STOPPED) |
8cae4b3f PA |
544 | return 0; |
545 | ||
5b6d1e4f PA |
546 | if (!thread->inf->has_execution ()) |
547 | return 0; | |
548 | ||
00431a78 | 549 | switch_to_thread (thread); |
70509625 | 550 | clear_proceed_status (0); |
64ce06e4 | 551 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
8cae4b3f PA |
552 | return 0; |
553 | } | |
554 | ||
70221824 | 555 | static void |
d729566a PA |
556 | ensure_valid_thread (void) |
557 | { | |
00431a78 PA |
558 | if (inferior_ptid == null_ptid |
559 | || inferior_thread ()->state == THREAD_EXITED) | |
3e43a32a | 560 | error (_("Cannot execute this command without a live selected thread.")); |
d729566a PA |
561 | } |
562 | ||
573cda03 | 563 | /* If the user is looking at trace frames, any resumption of execution |
1777feb0 | 564 | is likely to mix up recorded and live target data. So simply |
573cda03 SS |
565 | disallow those commands. */ |
566 | ||
70221824 | 567 | static void |
573cda03 SS |
568 | ensure_not_tfind_mode (void) |
569 | { | |
570 | if (get_traceframe_number () >= 0) | |
3e43a32a | 571 | error (_("Cannot execute this command while looking at trace frames.")); |
573cda03 SS |
572 | } |
573 | ||
3d3fef6b YQ |
574 | /* Throw an error indicating the current thread is running. */ |
575 | ||
576 | static void | |
577 | error_is_running (void) | |
578 | { | |
579 | error (_("Cannot execute this command while " | |
580 | "the selected thread is running.")); | |
581 | } | |
582 | ||
583 | /* Calls error_is_running if the current thread is running. */ | |
584 | ||
585 | static void | |
586 | ensure_not_running (void) | |
587 | { | |
00431a78 | 588 | if (inferior_thread ()->state == THREAD_RUNNING) |
3d3fef6b YQ |
589 | error_is_running (); |
590 | } | |
591 | ||
77ebaa5a VP |
592 | void |
593 | continue_1 (int all_threads) | |
594 | { | |
3d488bfc | 595 | ERROR_NO_INFERIOR; |
573cda03 | 596 | ensure_not_tfind_mode (); |
3d488bfc | 597 | |
77ebaa5a VP |
598 | if (non_stop && all_threads) |
599 | { | |
600 | /* Don't error out if the current thread is running, because | |
abbb1732 | 601 | there may be other stopped threads. */ |
77ebaa5a | 602 | |
5ed8105e PA |
603 | /* Backup current thread and selected frame and restore on scope |
604 | exit. */ | |
605 | scoped_restore_current_thread restore_thread; | |
77ebaa5a VP |
606 | |
607 | iterate_over_threads (proceed_thread_callback, NULL); | |
608 | ||
3b12939d | 609 | if (current_ui->prompt_state == PROMPT_BLOCKED) |
0ff33695 PA |
610 | { |
611 | /* If all threads in the target were already running, | |
612 | proceed_thread_callback ends up never calling proceed, | |
613 | and so nothing calls this to put the inferior's terminal | |
614 | settings in effect and remove stdin from the event loop, | |
615 | which we must when running a foreground command. E.g.: | |
616 | ||
617 | (gdb) c -a& | |
618 | Continuing. | |
619 | <all threads are running now> | |
620 | (gdb) c -a | |
621 | Continuing. | |
622 | <no thread was resumed, but the inferior now owns the terminal> | |
623 | */ | |
223ffa71 | 624 | target_terminal::inferior (); |
0ff33695 | 625 | } |
77ebaa5a VP |
626 | } |
627 | else | |
628 | { | |
d729566a | 629 | ensure_valid_thread (); |
77ebaa5a | 630 | ensure_not_running (); |
70509625 | 631 | clear_proceed_status (0); |
64ce06e4 | 632 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
77ebaa5a VP |
633 | } |
634 | } | |
635 | ||
8cae4b3f | 636 | /* continue [-a] [proceed-count] [&] */ |
6339bfc4 | 637 | |
1dd5fedc | 638 | static void |
0b39b52e | 639 | continue_command (const char *args, int from_tty) |
c906108c | 640 | { |
6c4486e6 | 641 | int async_exec; |
5b6d1e4f | 642 | bool all_threads_p = false; |
6c4486e6 | 643 | |
c906108c SS |
644 | ERROR_NO_INFERIOR; |
645 | ||
1777feb0 | 646 | /* Find out whether we must run in the background. */ |
6be9a197 TT |
647 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (args, &async_exec); |
648 | args = stripped.get (); | |
43ff13b4 | 649 | |
8cae4b3f PA |
650 | if (args != NULL) |
651 | { | |
61012eef | 652 | if (startswith (args, "-a")) |
8cae4b3f | 653 | { |
5b6d1e4f | 654 | all_threads_p = true; |
8cae4b3f PA |
655 | args += sizeof ("-a") - 1; |
656 | if (*args == '\0') | |
657 | args = NULL; | |
658 | } | |
659 | } | |
660 | ||
5b6d1e4f | 661 | if (!non_stop && all_threads_p) |
8cae4b3f PA |
662 | error (_("`-a' is meaningless in all-stop mode.")); |
663 | ||
5b6d1e4f | 664 | if (args != NULL && all_threads_p) |
3e43a32a MS |
665 | error (_("Can't resume all threads and specify " |
666 | "proceed count simultaneously.")); | |
8cae4b3f PA |
667 | |
668 | /* If we have an argument left, set proceed count of breakpoint we | |
669 | stopped at. */ | |
670 | if (args != NULL) | |
c906108c | 671 | { |
347bddb7 | 672 | bpstat bs = NULL; |
8671a17b PA |
673 | int num, stat; |
674 | int stopped = 0; | |
347bddb7 PA |
675 | struct thread_info *tp; |
676 | ||
677 | if (non_stop) | |
00431a78 | 678 | tp = inferior_thread (); |
347bddb7 PA |
679 | else |
680 | { | |
5b6d1e4f | 681 | process_stratum_target *last_target; |
347bddb7 | 682 | ptid_t last_ptid; |
347bddb7 | 683 | |
5b6d1e4f PA |
684 | get_last_target_status (&last_target, &last_ptid, nullptr); |
685 | tp = find_thread_ptid (last_target, last_ptid); | |
347bddb7 PA |
686 | } |
687 | if (tp != NULL) | |
16c381f0 | 688 | bs = tp->control.stop_bpstat; |
8671a17b PA |
689 | |
690 | while ((stat = bpstat_num (&bs, &num)) != 0) | |
691 | if (stat > 0) | |
692 | { | |
693 | set_ignore_count (num, | |
8cae4b3f | 694 | parse_and_eval_long (args) - 1, |
8671a17b PA |
695 | from_tty); |
696 | /* set_ignore_count prints a message ending with a period. | |
697 | So print two spaces before "Continuing.". */ | |
698 | if (from_tty) | |
699 | printf_filtered (" "); | |
700 | stopped = 1; | |
701 | } | |
702 | ||
703 | if (!stopped && from_tty) | |
c906108c SS |
704 | { |
705 | printf_filtered | |
706 | ("Not stopped at any breakpoint; argument ignored.\n"); | |
707 | } | |
c906108c SS |
708 | } |
709 | ||
3b12939d PA |
710 | ERROR_NO_INFERIOR; |
711 | ensure_not_tfind_mode (); | |
712 | ||
5b6d1e4f | 713 | if (!non_stop || !all_threads_p) |
3b12939d PA |
714 | { |
715 | ensure_valid_thread (); | |
716 | ensure_not_running (); | |
717 | } | |
718 | ||
328d42d8 | 719 | prepare_execution_command (current_inferior ()->top_target (), async_exec); |
3b12939d | 720 | |
c906108c | 721 | if (from_tty) |
a3f17187 | 722 | printf_filtered (_("Continuing.\n")); |
c906108c | 723 | |
5b6d1e4f | 724 | continue_1 (all_threads_p); |
c906108c SS |
725 | } |
726 | \f | |
29734269 | 727 | /* Record in TP the starting point of a "step" or "next" command. */ |
edb3359d DJ |
728 | |
729 | static void | |
29734269 | 730 | set_step_frame (thread_info *tp) |
edb3359d | 731 | { |
29734269 SM |
732 | /* This can be removed once this function no longer implicitly relies on the |
733 | inferior_ptid value. */ | |
734 | gdb_assert (inferior_ptid == tp->ptid); | |
735 | ||
51abb421 | 736 | frame_info *frame = get_current_frame (); |
edb3359d | 737 | |
51abb421 | 738 | symtab_and_line sal = find_frame_sal (frame); |
29734269 | 739 | set_step_info (tp, frame, sal); |
51abb421 PA |
740 | |
741 | CORE_ADDR pc = get_frame_pc (frame); | |
64ce06e4 | 742 | tp->control.step_start_function = find_pc_function (pc); |
edb3359d DJ |
743 | } |
744 | ||
c906108c SS |
745 | /* Step until outside of current statement. */ |
746 | ||
c906108c | 747 | static void |
0b39b52e | 748 | step_command (const char *count_string, int from_tty) |
c906108c SS |
749 | { |
750 | step_1 (0, 0, count_string); | |
751 | } | |
752 | ||
753 | /* Likewise, but skip over subroutine calls as if single instructions. */ | |
754 | ||
c906108c | 755 | static void |
0b39b52e | 756 | next_command (const char *count_string, int from_tty) |
c906108c SS |
757 | { |
758 | step_1 (1, 0, count_string); | |
759 | } | |
760 | ||
761 | /* Likewise, but step only one instruction. */ | |
762 | ||
1dd5fedc | 763 | static void |
0b39b52e | 764 | stepi_command (const char *count_string, int from_tty) |
c906108c SS |
765 | { |
766 | step_1 (0, 1, count_string); | |
767 | } | |
768 | ||
1dd5fedc | 769 | static void |
0b39b52e | 770 | nexti_command (const char *count_string, int from_tty) |
c906108c SS |
771 | { |
772 | step_1 (1, 1, count_string); | |
773 | } | |
774 | ||
243a9253 PA |
775 | /* Data for the FSM that manages the step/next/stepi/nexti |
776 | commands. */ | |
777 | ||
46e3ed7f | 778 | struct step_command_fsm : public thread_fsm |
243a9253 | 779 | { |
243a9253 PA |
780 | /* How many steps left in a "step N"-like command. */ |
781 | int count; | |
782 | ||
783 | /* If true, this is a next/nexti, otherwise a step/stepi. */ | |
784 | int skip_subroutines; | |
785 | ||
786 | /* If true, this is a stepi/nexti, otherwise a step/step. */ | |
787 | int single_inst; | |
243a9253 | 788 | |
46e3ed7f TT |
789 | explicit step_command_fsm (struct interp *cmd_interp) |
790 | : thread_fsm (cmd_interp) | |
791 | { | |
792 | } | |
243a9253 | 793 | |
46e3ed7f TT |
794 | void clean_up (struct thread_info *thread) override; |
795 | bool should_stop (struct thread_info *thread) override; | |
796 | enum async_reply_reason do_async_reply_reason () override; | |
243a9253 PA |
797 | }; |
798 | ||
243a9253 PA |
799 | /* Prepare for a step/next/etc. command. Any target resource |
800 | allocated here is undone in the FSM's clean_up method. */ | |
801 | ||
802 | static void | |
803 | step_command_fsm_prepare (struct step_command_fsm *sm, | |
804 | int skip_subroutines, int single_inst, | |
805 | int count, struct thread_info *thread) | |
806 | { | |
807 | sm->skip_subroutines = skip_subroutines; | |
808 | sm->single_inst = single_inst; | |
809 | sm->count = count; | |
243a9253 PA |
810 | |
811 | /* Leave the si command alone. */ | |
812 | if (!sm->single_inst || sm->skip_subroutines) | |
813 | set_longjmp_breakpoint (thread, get_frame_id (get_current_frame ())); | |
814 | ||
815 | thread->control.stepping_command = 1; | |
816 | } | |
817 | ||
29734269 | 818 | static int prepare_one_step (thread_info *, struct step_command_fsm *sm); |
243a9253 | 819 | |
c906108c | 820 | static void |
0b39b52e | 821 | step_1 (int skip_subroutines, int single_inst, const char *count_string) |
c906108c | 822 | { |
243a9253 | 823 | int count; |
6c4486e6 | 824 | int async_exec; |
243a9253 PA |
825 | struct thread_info *thr; |
826 | struct step_command_fsm *step_sm; | |
c5aa993b | 827 | |
c906108c | 828 | ERROR_NO_INFERIOR; |
573cda03 | 829 | ensure_not_tfind_mode (); |
d729566a | 830 | ensure_valid_thread (); |
94cc34af | 831 | ensure_not_running (); |
43ff13b4 | 832 | |
6be9a197 TT |
833 | gdb::unique_xmalloc_ptr<char> stripped |
834 | = strip_bg_char (count_string, &async_exec); | |
835 | count_string = stripped.get (); | |
c5aa993b | 836 | |
328d42d8 | 837 | prepare_execution_command (current_inferior ()->top_target (), async_exec); |
43ff13b4 | 838 | |
bb518678 | 839 | count = count_string ? parse_and_eval_long (count_string) : 1; |
c906108c | 840 | |
243a9253 | 841 | clear_proceed_status (1); |
611c83ae | 842 | |
243a9253 PA |
843 | /* Setup the execution command state machine to handle all the COUNT |
844 | steps. */ | |
845 | thr = inferior_thread (); | |
46e3ed7f TT |
846 | step_sm = new step_command_fsm (command_interp ()); |
847 | thr->thread_fsm = step_sm; | |
611c83ae | 848 | |
243a9253 PA |
849 | step_command_fsm_prepare (step_sm, skip_subroutines, |
850 | single_inst, count, thr); | |
c2d11a7d | 851 | |
0b333c5e PA |
852 | /* Do only one step for now, before returning control to the event |
853 | loop. Let the continuation figure out how many other steps we | |
854 | need to do, and handle them one at the time, through | |
855 | step_once. */ | |
29734269 | 856 | if (!prepare_one_step (thr, step_sm)) |
243a9253 PA |
857 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
858 | else | |
859 | { | |
3b12939d PA |
860 | int proceeded; |
861 | ||
243a9253 PA |
862 | /* Stepped into an inline frame. Pretend that we've |
863 | stopped. */ | |
46e3ed7f | 864 | thr->thread_fsm->clean_up (thr); |
3b12939d PA |
865 | proceeded = normal_stop (); |
866 | if (!proceeded) | |
b1a35af2 | 867 | inferior_event_handler (INF_EXEC_COMPLETE); |
3b12939d | 868 | all_uis_check_sync_execution_done (); |
243a9253 | 869 | } |
c2d11a7d | 870 | } |
c906108c | 871 | |
243a9253 PA |
872 | /* Implementation of the 'should_stop' FSM method for stepping |
873 | commands. Called after we are done with one step operation, to | |
874 | check whether we need to step again, before we print the prompt and | |
875 | return control to the user. If count is > 1, returns false, as we | |
876 | will need to keep going. */ | |
6339bfc4 | 877 | |
46e3ed7f TT |
878 | bool |
879 | step_command_fsm::should_stop (struct thread_info *tp) | |
c2d11a7d | 880 | { |
243a9253 | 881 | if (tp->control.stop_step) |
f13468d9 | 882 | { |
243a9253 PA |
883 | /* There are more steps to make, and we did stop due to |
884 | ending a stepping range. Do another step. */ | |
46e3ed7f | 885 | if (--count > 0) |
29734269 | 886 | return prepare_one_step (tp, this); |
af679fd0 | 887 | |
46e3ed7f | 888 | set_finished (); |
f107f563 | 889 | } |
af679fd0 | 890 | |
46e3ed7f | 891 | return true; |
c2d11a7d JM |
892 | } |
893 | ||
243a9253 | 894 | /* Implementation of the 'clean_up' FSM method for stepping commands. */ |
37d94800 | 895 | |
46e3ed7f TT |
896 | void |
897 | step_command_fsm::clean_up (struct thread_info *thread) | |
bfec99b2 | 898 | { |
46e3ed7f | 899 | if (!single_inst || skip_subroutines) |
8980e177 | 900 | delete_longjmp_breakpoint (thread->global_num); |
243a9253 PA |
901 | } |
902 | ||
903 | /* Implementation of the 'async_reply_reason' FSM method for stepping | |
904 | commands. */ | |
905 | ||
46e3ed7f TT |
906 | enum async_reply_reason |
907 | step_command_fsm::do_async_reply_reason () | |
243a9253 PA |
908 | { |
909 | return EXEC_ASYNC_END_STEPPING_RANGE; | |
910 | } | |
911 | ||
912 | /* Prepare for one step in "step N". The actual target resumption is | |
913 | done by the caller. Return true if we're done and should thus | |
914 | report a stop to the user. Returns false if the target needs to be | |
915 | resumed. */ | |
c2d11a7d | 916 | |
243a9253 | 917 | static int |
29734269 | 918 | prepare_one_step (thread_info *tp, struct step_command_fsm *sm) |
243a9253 | 919 | { |
29734269 SM |
920 | /* This can be removed once this function no longer implicitly relies on the |
921 | inferior_ptid value. */ | |
922 | gdb_assert (inferior_ptid == tp->ptid); | |
923 | ||
243a9253 | 924 | if (sm->count > 0) |
c906108c | 925 | { |
243a9253 PA |
926 | struct frame_info *frame = get_current_frame (); |
927 | ||
29734269 | 928 | set_step_frame (tp); |
c906108c | 929 | |
243a9253 | 930 | if (!sm->single_inst) |
c906108c | 931 | { |
1641cfcc PA |
932 | CORE_ADDR pc; |
933 | ||
edb3359d | 934 | /* Step at an inlined function behaves like "down". */ |
243a9253 | 935 | if (!sm->skip_subroutines |
00431a78 | 936 | && inline_skipped_frames (tp)) |
edb3359d | 937 | { |
09cee04b | 938 | ptid_t resume_ptid; |
4a4c04f1 BE |
939 | const char *fn = NULL; |
940 | symtab_and_line sal; | |
941 | struct symbol *sym; | |
09cee04b PA |
942 | |
943 | /* Pretend that we've ran. */ | |
944 | resume_ptid = user_visible_resume_ptid (1); | |
5b6d1e4f | 945 | set_running (tp->inf->process_target (), resume_ptid, true); |
09cee04b | 946 | |
00431a78 | 947 | step_into_inline_frame (tp); |
4a4c04f1 BE |
948 | |
949 | frame = get_current_frame (); | |
950 | sal = find_frame_sal (frame); | |
951 | sym = get_frame_function (frame); | |
952 | ||
953 | if (sym != NULL) | |
954 | fn = sym->print_name (); | |
955 | ||
956 | if (sal.line == 0 | |
957 | || !function_name_is_marked_for_skip (fn, sal)) | |
958 | { | |
959 | sm->count--; | |
29734269 | 960 | return prepare_one_step (tp, sm); |
4a4c04f1 | 961 | } |
edb3359d DJ |
962 | } |
963 | ||
1641cfcc PA |
964 | pc = get_frame_pc (frame); |
965 | find_pc_line_pc_range (pc, | |
16c381f0 JK |
966 | &tp->control.step_range_start, |
967 | &tp->control.step_range_end); | |
5fbbeb29 | 968 | |
340d00fb TV |
969 | /* There's a problem in gcc (PR gcc/98780) that causes missing line |
970 | table entries, which results in a too large stepping range. | |
971 | Use inlined_subroutine info to make the range more narrow. */ | |
972 | if (inline_skipped_frames (tp) > 0) | |
973 | { | |
974 | symbol *sym = inline_skipped_symbol (tp); | |
975 | if (SYMBOL_CLASS (sym) == LOC_BLOCK) | |
976 | { | |
977 | const block *block = SYMBOL_BLOCK_VALUE (sym); | |
978 | if (BLOCK_END (block) < tp->control.step_range_end) | |
979 | tp->control.step_range_end = BLOCK_END (block); | |
980 | } | |
981 | } | |
982 | ||
c1e36e3e PA |
983 | tp->control.may_range_step = 1; |
984 | ||
5fbbeb29 | 985 | /* If we have no line info, switch to stepi mode. */ |
16c381f0 | 986 | if (tp->control.step_range_end == 0 && step_stop_if_no_debug) |
c1e36e3e PA |
987 | { |
988 | tp->control.step_range_start = tp->control.step_range_end = 1; | |
989 | tp->control.may_range_step = 0; | |
990 | } | |
16c381f0 | 991 | else if (tp->control.step_range_end == 0) |
c906108c | 992 | { |
2c02bd72 | 993 | const char *name; |
abbb1732 | 994 | |
1641cfcc | 995 | if (find_pc_partial_function (pc, &name, |
16c381f0 JK |
996 | &tp->control.step_range_start, |
997 | &tp->control.step_range_end) == 0) | |
8a3fe4f8 | 998 | error (_("Cannot find bounds of current function")); |
c906108c | 999 | |
223ffa71 | 1000 | target_terminal::ours_for_output (); |
3e43a32a MS |
1001 | printf_filtered (_("Single stepping until exit from function %s," |
1002 | "\nwhich has no line number information.\n"), | |
1003 | name); | |
c906108c SS |
1004 | } |
1005 | } | |
1006 | else | |
1007 | { | |
1008 | /* Say we are stepping, but stop after one insn whatever it does. */ | |
16c381f0 | 1009 | tp->control.step_range_start = tp->control.step_range_end = 1; |
243a9253 | 1010 | if (!sm->skip_subroutines) |
c906108c SS |
1011 | /* It is stepi. |
1012 | Don't step over function calls, not even to functions lacking | |
1013 | line numbers. */ | |
16c381f0 | 1014 | tp->control.step_over_calls = STEP_OVER_NONE; |
c906108c SS |
1015 | } |
1016 | ||
243a9253 | 1017 | if (sm->skip_subroutines) |
16c381f0 | 1018 | tp->control.step_over_calls = STEP_OVER_ALL; |
c906108c | 1019 | |
243a9253 | 1020 | return 0; |
c906108c | 1021 | } |
243a9253 PA |
1022 | |
1023 | /* Done. */ | |
46e3ed7f | 1024 | sm->set_finished (); |
243a9253 | 1025 | return 1; |
c906108c | 1026 | } |
c2d11a7d | 1027 | |
c906108c SS |
1028 | \f |
1029 | /* Continue program at specified address. */ | |
1030 | ||
1031 | static void | |
0b39b52e | 1032 | jump_command (const char *arg, int from_tty) |
c906108c | 1033 | { |
5af949e3 | 1034 | struct gdbarch *gdbarch = get_current_arch (); |
52f0bd74 | 1035 | CORE_ADDR addr; |
c906108c SS |
1036 | struct symbol *fn; |
1037 | struct symbol *sfn; | |
6c4486e6 | 1038 | int async_exec; |
c5aa993b | 1039 | |
c906108c | 1040 | ERROR_NO_INFERIOR; |
573cda03 | 1041 | ensure_not_tfind_mode (); |
d729566a | 1042 | ensure_valid_thread (); |
94cc34af | 1043 | ensure_not_running (); |
c906108c | 1044 | |
1777feb0 | 1045 | /* Find out whether we must run in the background. */ |
6be9a197 TT |
1046 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (arg, &async_exec); |
1047 | arg = stripped.get (); | |
43ff13b4 | 1048 | |
328d42d8 | 1049 | prepare_execution_command (current_inferior ()->top_target (), async_exec); |
43ff13b4 | 1050 | |
c906108c | 1051 | if (!arg) |
e2e0b3e5 | 1052 | error_no_arg (_("starting address")); |
c906108c | 1053 | |
6c5b2ebe PA |
1054 | std::vector<symtab_and_line> sals |
1055 | = decode_line_with_last_displayed (arg, DECODE_LINE_FUNFIRSTLINE); | |
1056 | if (sals.size () != 1) | |
1057 | error (_("Unreasonable jump request")); | |
c906108c | 1058 | |
6c5b2ebe PA |
1059 | symtab_and_line &sal = sals[0]; |
1060 | ||
c906108c | 1061 | if (sal.symtab == 0 && sal.pc == 0) |
8a3fe4f8 | 1062 | error (_("No source file has been specified.")); |
c906108c | 1063 | |
1777feb0 | 1064 | resolve_sal_pc (&sal); /* May error out. */ |
c906108c | 1065 | |
1777feb0 | 1066 | /* See if we are trying to jump to another function. */ |
c906108c SS |
1067 | fn = get_frame_function (get_current_frame ()); |
1068 | sfn = find_pc_function (sal.pc); | |
1069 | if (fn != NULL && sfn != fn) | |
1070 | { | |
9e2f0ad4 | 1071 | if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal.line, |
987012b8 | 1072 | fn->print_name ())) |
c906108c | 1073 | { |
8a3fe4f8 | 1074 | error (_("Not confirmed.")); |
c906108c SS |
1075 | /* NOTREACHED */ |
1076 | } | |
1077 | } | |
1078 | ||
c5aa993b | 1079 | if (sfn != NULL) |
c906108c | 1080 | { |
253342b8 DE |
1081 | struct obj_section *section; |
1082 | ||
c906108c | 1083 | fixup_symbol_section (sfn, 0); |
ebbc3a7d | 1084 | section = sfn->obj_section (symbol_objfile (sfn)); |
253342b8 DE |
1085 | if (section_is_overlay (section) |
1086 | && !section_is_mapped (section)) | |
c906108c | 1087 | { |
3e43a32a MS |
1088 | if (!query (_("WARNING!!! Destination is in " |
1089 | "unmapped overlay! Jump anyway? "))) | |
c906108c | 1090 | { |
8a3fe4f8 | 1091 | error (_("Not confirmed.")); |
c906108c SS |
1092 | /* NOTREACHED */ |
1093 | } | |
1094 | } | |
1095 | } | |
1096 | ||
c906108c SS |
1097 | addr = sal.pc; |
1098 | ||
1099 | if (from_tty) | |
1100 | { | |
a3f17187 | 1101 | printf_filtered (_("Continuing at ")); |
5af949e3 | 1102 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
c906108c SS |
1103 | printf_filtered (".\n"); |
1104 | } | |
1105 | ||
70509625 | 1106 | clear_proceed_status (0); |
64ce06e4 | 1107 | proceed (addr, GDB_SIGNAL_0); |
c906108c | 1108 | } |
c906108c | 1109 | \f |
c906108c SS |
1110 | /* Continue program giving it specified signal. */ |
1111 | ||
1112 | static void | |
0b39b52e | 1113 | signal_command (const char *signum_exp, int from_tty) |
c906108c | 1114 | { |
2ea28649 | 1115 | enum gdb_signal oursig; |
6c4486e6 | 1116 | int async_exec; |
c906108c SS |
1117 | |
1118 | dont_repeat (); /* Too dangerous. */ | |
1119 | ERROR_NO_INFERIOR; | |
573cda03 | 1120 | ensure_not_tfind_mode (); |
d729566a | 1121 | ensure_valid_thread (); |
94cc34af | 1122 | ensure_not_running (); |
c906108c | 1123 | |
32c1e744 | 1124 | /* Find out whether we must run in the background. */ |
6be9a197 TT |
1125 | gdb::unique_xmalloc_ptr<char> stripped |
1126 | = strip_bg_char (signum_exp, &async_exec); | |
1127 | signum_exp = stripped.get (); | |
32c1e744 | 1128 | |
328d42d8 | 1129 | prepare_execution_command (current_inferior ()->top_target (), async_exec); |
32c1e744 | 1130 | |
c906108c | 1131 | if (!signum_exp) |
e2e0b3e5 | 1132 | error_no_arg (_("signal number")); |
c906108c SS |
1133 | |
1134 | /* It would be even slicker to make signal names be valid expressions, | |
1135 | (the type could be "enum $signal" or some such), then the user could | |
1136 | assign them to convenience variables. */ | |
2ea28649 | 1137 | oursig = gdb_signal_from_name (signum_exp); |
c906108c | 1138 | |
a493e3e2 | 1139 | if (oursig == GDB_SIGNAL_UNKNOWN) |
c906108c SS |
1140 | { |
1141 | /* No, try numeric. */ | |
bb518678 | 1142 | int num = parse_and_eval_long (signum_exp); |
c906108c SS |
1143 | |
1144 | if (num == 0) | |
a493e3e2 | 1145 | oursig = GDB_SIGNAL_0; |
c906108c | 1146 | else |
2ea28649 | 1147 | oursig = gdb_signal_from_command (num); |
c906108c SS |
1148 | } |
1149 | ||
70509625 PA |
1150 | /* Look for threads other than the current that this command ends up |
1151 | resuming too (due to schedlock off), and warn if they'll get a | |
1152 | signal delivered. "signal 0" is used to suppress a previous | |
1153 | signal, but if the current thread is no longer the one that got | |
1154 | the signal, then the user is potentially suppressing the signal | |
1155 | of the wrong thread. */ | |
1156 | if (!non_stop) | |
1157 | { | |
70509625 PA |
1158 | int must_confirm = 0; |
1159 | ||
1160 | /* This indicates what will be resumed. Either a single thread, | |
1161 | a whole process, or all threads of all processes. */ | |
08036331 | 1162 | ptid_t resume_ptid = user_visible_resume_ptid (0); |
5b6d1e4f PA |
1163 | process_stratum_target *resume_target |
1164 | = user_visible_resume_target (resume_ptid); | |
70509625 | 1165 | |
5b6d1e4f PA |
1166 | thread_info *current = inferior_thread (); |
1167 | ||
1168 | for (thread_info *tp : all_non_exited_threads (resume_target, resume_ptid)) | |
70509625 | 1169 | { |
5b6d1e4f | 1170 | if (tp == current) |
70509625 | 1171 | continue; |
70509625 | 1172 | |
1edb66d8 SM |
1173 | if (tp->stop_signal () != GDB_SIGNAL_0 |
1174 | && signal_pass_state (tp->stop_signal ())) | |
70509625 PA |
1175 | { |
1176 | if (!must_confirm) | |
1177 | printf_unfiltered (_("Note:\n")); | |
43792cf0 PA |
1178 | printf_unfiltered (_(" Thread %s previously stopped with signal %s, %s.\n"), |
1179 | print_thread_id (tp), | |
1edb66d8 SM |
1180 | gdb_signal_to_name (tp->stop_signal ()), |
1181 | gdb_signal_to_string (tp->stop_signal ())); | |
70509625 PA |
1182 | must_confirm = 1; |
1183 | } | |
1184 | } | |
1185 | ||
1186 | if (must_confirm | |
43792cf0 | 1187 | && !query (_("Continuing thread %s (the current thread) with specified signal will\n" |
70509625 PA |
1188 | "still deliver the signals noted above to their respective threads.\n" |
1189 | "Continue anyway? "), | |
43792cf0 | 1190 | print_thread_id (inferior_thread ()))) |
70509625 PA |
1191 | error (_("Not confirmed.")); |
1192 | } | |
1193 | ||
c906108c SS |
1194 | if (from_tty) |
1195 | { | |
a493e3e2 | 1196 | if (oursig == GDB_SIGNAL_0) |
a3f17187 | 1197 | printf_filtered (_("Continuing with no signal.\n")); |
c906108c | 1198 | else |
a3f17187 | 1199 | printf_filtered (_("Continuing with signal %s.\n"), |
2ea28649 | 1200 | gdb_signal_to_name (oursig)); |
c906108c SS |
1201 | } |
1202 | ||
70509625 | 1203 | clear_proceed_status (0); |
64ce06e4 | 1204 | proceed ((CORE_ADDR) -1, oursig); |
c906108c SS |
1205 | } |
1206 | ||
81219e53 DE |
1207 | /* Queue a signal to be delivered to the current thread. */ |
1208 | ||
1209 | static void | |
0b39b52e | 1210 | queue_signal_command (const char *signum_exp, int from_tty) |
81219e53 DE |
1211 | { |
1212 | enum gdb_signal oursig; | |
1213 | struct thread_info *tp; | |
1214 | ||
1215 | ERROR_NO_INFERIOR; | |
1216 | ensure_not_tfind_mode (); | |
1217 | ensure_valid_thread (); | |
1218 | ensure_not_running (); | |
1219 | ||
1220 | if (signum_exp == NULL) | |
1221 | error_no_arg (_("signal number")); | |
1222 | ||
1223 | /* It would be even slicker to make signal names be valid expressions, | |
1224 | (the type could be "enum $signal" or some such), then the user could | |
1225 | assign them to convenience variables. */ | |
1226 | oursig = gdb_signal_from_name (signum_exp); | |
1227 | ||
1228 | if (oursig == GDB_SIGNAL_UNKNOWN) | |
1229 | { | |
1230 | /* No, try numeric. */ | |
1231 | int num = parse_and_eval_long (signum_exp); | |
1232 | ||
1233 | if (num == 0) | |
1234 | oursig = GDB_SIGNAL_0; | |
1235 | else | |
1236 | oursig = gdb_signal_from_command (num); | |
1237 | } | |
1238 | ||
1239 | if (oursig != GDB_SIGNAL_0 | |
1240 | && !signal_pass_state (oursig)) | |
1241 | error (_("Signal handling set to not pass this signal to the program.")); | |
1242 | ||
1243 | tp = inferior_thread (); | |
1edb66d8 | 1244 | tp->set_stop_signal (oursig); |
81219e53 DE |
1245 | } |
1246 | ||
cfc31633 PA |
1247 | /* Data for the FSM that manages the until (with no argument) |
1248 | command. */ | |
1249 | ||
46e3ed7f | 1250 | struct until_next_fsm : public thread_fsm |
fa4cd53f | 1251 | { |
cfc31633 | 1252 | /* The thread that as current when the command was executed. */ |
fa4cd53f | 1253 | int thread; |
cfc31633 | 1254 | |
46e3ed7f TT |
1255 | until_next_fsm (struct interp *cmd_interp, int thread) |
1256 | : thread_fsm (cmd_interp), | |
1257 | thread (thread) | |
1258 | { | |
1259 | } | |
cfc31633 | 1260 | |
46e3ed7f TT |
1261 | bool should_stop (struct thread_info *thread) override; |
1262 | void clean_up (struct thread_info *thread) override; | |
1263 | enum async_reply_reason do_async_reply_reason () override; | |
cfc31633 PA |
1264 | }; |
1265 | ||
cfc31633 PA |
1266 | /* Implementation of the 'should_stop' FSM method for the until (with |
1267 | no arg) command. */ | |
1268 | ||
46e3ed7f TT |
1269 | bool |
1270 | until_next_fsm::should_stop (struct thread_info *tp) | |
cfc31633 | 1271 | { |
cfc31633 | 1272 | if (tp->control.stop_step) |
46e3ed7f | 1273 | set_finished (); |
cfc31633 | 1274 | |
46e3ed7f | 1275 | return true; |
cfc31633 PA |
1276 | } |
1277 | ||
1278 | /* Implementation of the 'clean_up' FSM method for the until (with no | |
1279 | arg) command. */ | |
186c406b | 1280 | |
46e3ed7f TT |
1281 | void |
1282 | until_next_fsm::clean_up (struct thread_info *thread) | |
186c406b | 1283 | { |
8980e177 | 1284 | delete_longjmp_breakpoint (thread->global_num); |
cfc31633 PA |
1285 | } |
1286 | ||
1287 | /* Implementation of the 'async_reply_reason' FSM method for the until | |
1288 | (with no arg) command. */ | |
1289 | ||
46e3ed7f TT |
1290 | enum async_reply_reason |
1291 | until_next_fsm::do_async_reply_reason () | |
cfc31633 PA |
1292 | { |
1293 | return EXEC_ASYNC_END_STEPPING_RANGE; | |
186c406b TT |
1294 | } |
1295 | ||
c906108c SS |
1296 | /* Proceed until we reach a different source line with pc greater than |
1297 | our current one or exit the function. We skip calls in both cases. | |
1298 | ||
1299 | Note that eventually this command should probably be changed so | |
1300 | that only source lines are printed out when we hit the breakpoint | |
1301 | we set. This may involve changes to wait_for_inferior and the | |
1302 | proceed status code. */ | |
1303 | ||
c906108c | 1304 | static void |
fba45db2 | 1305 | until_next_command (int from_tty) |
c906108c SS |
1306 | { |
1307 | struct frame_info *frame; | |
1308 | CORE_ADDR pc; | |
1309 | struct symbol *func; | |
1310 | struct symtab_and_line sal; | |
4e1c45ea | 1311 | struct thread_info *tp = inferior_thread (); |
5d5658a1 | 1312 | int thread = tp->global_num; |
cfc31633 | 1313 | struct until_next_fsm *sm; |
c5aa993b | 1314 | |
70509625 | 1315 | clear_proceed_status (0); |
29734269 | 1316 | set_step_frame (tp); |
c906108c SS |
1317 | |
1318 | frame = get_current_frame (); | |
1319 | ||
1320 | /* Step until either exited from this function or greater | |
1321 | than the current line (if in symbolic section) or pc (if | |
1777feb0 | 1322 | not). */ |
c906108c | 1323 | |
1c7819ef | 1324 | pc = get_frame_pc (frame); |
c906108c | 1325 | func = find_pc_function (pc); |
c5aa993b | 1326 | |
c906108c SS |
1327 | if (!func) |
1328 | { | |
7cbd4a93 | 1329 | struct bound_minimal_symbol msymbol = lookup_minimal_symbol_by_pc (pc); |
c5aa993b | 1330 | |
7cbd4a93 | 1331 | if (msymbol.minsym == NULL) |
8a3fe4f8 | 1332 | error (_("Execution is not within a known function.")); |
c5aa993b | 1333 | |
77e371c0 | 1334 | tp->control.step_range_start = BMSYMBOL_VALUE_ADDRESS (msymbol); |
7e09a223 YQ |
1335 | /* The upper-bound of step_range is exclusive. In order to make PC |
1336 | within the range, set the step_range_end with PC + 1. */ | |
1337 | tp->control.step_range_end = pc + 1; | |
c906108c SS |
1338 | } |
1339 | else | |
1340 | { | |
1341 | sal = find_pc_line (pc, 0); | |
c5aa993b | 1342 | |
2b1ffcfd | 1343 | tp->control.step_range_start = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (func)); |
16c381f0 | 1344 | tp->control.step_range_end = sal.end; |
c906108c | 1345 | } |
c1e36e3e | 1346 | tp->control.may_range_step = 1; |
c5aa993b | 1347 | |
16c381f0 | 1348 | tp->control.step_over_calls = STEP_OVER_ALL; |
c906108c | 1349 | |
186c406b | 1350 | set_longjmp_breakpoint (tp, get_frame_id (frame)); |
5419bdae | 1351 | delete_longjmp_breakpoint_cleanup lj_deleter (thread); |
186c406b | 1352 | |
46e3ed7f TT |
1353 | sm = new until_next_fsm (command_interp (), tp->global_num); |
1354 | tp->thread_fsm = sm; | |
5419bdae | 1355 | lj_deleter.release (); |
fa4cd53f | 1356 | |
cfc31633 | 1357 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
c906108c SS |
1358 | } |
1359 | ||
c5aa993b | 1360 | static void |
0b39b52e | 1361 | until_command (const char *arg, int from_tty) |
c906108c | 1362 | { |
6c4486e6 | 1363 | int async_exec; |
43ff13b4 | 1364 | |
4247603b | 1365 | ERROR_NO_INFERIOR; |
573cda03 | 1366 | ensure_not_tfind_mode (); |
4247603b PA |
1367 | ensure_valid_thread (); |
1368 | ensure_not_running (); | |
573cda03 | 1369 | |
1777feb0 | 1370 | /* Find out whether we must run in the background. */ |
6be9a197 TT |
1371 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (arg, &async_exec); |
1372 | arg = stripped.get (); | |
43ff13b4 | 1373 | |
328d42d8 | 1374 | prepare_execution_command (current_inferior ()->top_target (), async_exec); |
43ff13b4 | 1375 | |
c906108c | 1376 | if (arg) |
ae66c1fc | 1377 | until_break_command (arg, from_tty, 0); |
c906108c SS |
1378 | else |
1379 | until_next_command (from_tty); | |
1380 | } | |
ae66c1fc EZ |
1381 | |
1382 | static void | |
0b39b52e | 1383 | advance_command (const char *arg, int from_tty) |
ae66c1fc | 1384 | { |
6c4486e6 | 1385 | int async_exec; |
ae66c1fc | 1386 | |
4247603b | 1387 | ERROR_NO_INFERIOR; |
573cda03 | 1388 | ensure_not_tfind_mode (); |
4247603b PA |
1389 | ensure_valid_thread (); |
1390 | ensure_not_running (); | |
573cda03 | 1391 | |
ae66c1fc | 1392 | if (arg == NULL) |
e2e0b3e5 | 1393 | error_no_arg (_("a location")); |
ae66c1fc EZ |
1394 | |
1395 | /* Find out whether we must run in the background. */ | |
6be9a197 TT |
1396 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (arg, &async_exec); |
1397 | arg = stripped.get (); | |
ae66c1fc | 1398 | |
328d42d8 | 1399 | prepare_execution_command (current_inferior ()->top_target (), async_exec); |
ae66c1fc EZ |
1400 | |
1401 | until_break_command (arg, from_tty, 1); | |
1402 | } | |
c906108c | 1403 | \f |
cc72b2a2 | 1404 | /* Return the value of the result of a function at the end of a 'finish' |
8a6c4031 JK |
1405 | command/BP. DTOR_DATA (if not NULL) can represent inferior registers |
1406 | right after an inferior call has finished. */ | |
f941662f | 1407 | |
cc72b2a2 | 1408 | struct value * |
0700e23e | 1409 | get_return_value (struct value *function, struct type *value_type) |
11cf8741 | 1410 | { |
215c69dc YQ |
1411 | regcache *stop_regs = get_current_regcache (); |
1412 | struct gdbarch *gdbarch = stop_regs->arch (); | |
44e5158b AC |
1413 | struct value *value; |
1414 | ||
f168693b | 1415 | value_type = check_typedef (value_type); |
78134374 | 1416 | gdb_assert (value_type->code () != TYPE_CODE_VOID); |
11cf8741 | 1417 | |
92ad9cd9 AC |
1418 | /* FIXME: 2003-09-27: When returning from a nested inferior function |
1419 | call, it's possible (with no help from the architecture vector) | |
1420 | to locate and return/print a "struct return" value. This is just | |
7a9dd1b2 | 1421 | a more complicated case of what is already being done in the |
92ad9cd9 AC |
1422 | inferior function call code. In fact, when inferior function |
1423 | calls are made async, this will likely be made the norm. */ | |
31db7b6c | 1424 | |
6a3a010b | 1425 | switch (gdbarch_return_value (gdbarch, function, value_type, |
24b21115 | 1426 | NULL, NULL, NULL)) |
44e5158b | 1427 | { |
750eb019 AC |
1428 | case RETURN_VALUE_REGISTER_CONVENTION: |
1429 | case RETURN_VALUE_ABI_RETURNS_ADDRESS: | |
181fc57c | 1430 | case RETURN_VALUE_ABI_PRESERVES_ADDRESS: |
44e5158b | 1431 | value = allocate_value (value_type); |
215c69dc | 1432 | gdbarch_return_value (gdbarch, function, value_type, stop_regs, |
50888e42 | 1433 | value_contents_raw (value).data (), NULL); |
750eb019 AC |
1434 | break; |
1435 | case RETURN_VALUE_STRUCT_CONVENTION: | |
1436 | value = NULL; | |
1437 | break; | |
1438 | default: | |
e2e0b3e5 | 1439 | internal_error (__FILE__, __LINE__, _("bad switch")); |
44e5158b | 1440 | } |
bb472c1e | 1441 | |
cc72b2a2 KP |
1442 | return value; |
1443 | } | |
1444 | ||
243a9253 PA |
1445 | /* The captured function return value/type and its position in the |
1446 | value history. */ | |
cc72b2a2 | 1447 | |
243a9253 | 1448 | struct return_value_info |
cc72b2a2 | 1449 | { |
243a9253 PA |
1450 | /* The captured return value. May be NULL if we weren't able to |
1451 | retrieve it. See get_return_value. */ | |
1452 | struct value *value; | |
1453 | ||
1454 | /* The return type. In some cases, we'll not be able extract the | |
1455 | return value, but we always know the type. */ | |
1456 | struct type *type; | |
1457 | ||
1458 | /* If we captured a value, this is the value history index. */ | |
1459 | int value_history_index; | |
1460 | }; | |
1461 | ||
1462 | /* Helper for print_return_value. */ | |
cc72b2a2 | 1463 | |
243a9253 PA |
1464 | static void |
1465 | print_return_value_1 (struct ui_out *uiout, struct return_value_info *rv) | |
1466 | { | |
1467 | if (rv->value != NULL) | |
31db7b6c | 1468 | { |
79a45b7d TT |
1469 | struct value_print_options opts; |
1470 | ||
31db7b6c | 1471 | /* Print it. */ |
112e8700 SM |
1472 | uiout->text ("Value returned is "); |
1473 | uiout->field_fmt ("gdb-result-var", "$%d", | |
d7e74731 | 1474 | rv->value_history_index); |
112e8700 | 1475 | uiout->text (" = "); |
5d9a0608 | 1476 | get_user_print_options (&opts); |
d7e74731 | 1477 | |
000439d5 TT |
1478 | if (opts.finish_print) |
1479 | { | |
1480 | string_file stb; | |
1481 | value_print (rv->value, &stb, &opts); | |
1482 | uiout->field_stream ("return-value", stb); | |
1483 | } | |
1484 | else | |
7f6aba03 TT |
1485 | uiout->field_string ("return-value", _("<not displayed>"), |
1486 | metadata_style.style ()); | |
112e8700 | 1487 | uiout->text ("\n"); |
31db7b6c MK |
1488 | } |
1489 | else | |
1490 | { | |
2f408ecb | 1491 | std::string type_name = type_to_string (rv->type); |
112e8700 | 1492 | uiout->text ("Value returned has type: "); |
8dd8c8d4 | 1493 | uiout->field_string ("return-type", type_name); |
112e8700 SM |
1494 | uiout->text ("."); |
1495 | uiout->text (" Cannot determine contents\n"); | |
31db7b6c | 1496 | } |
11cf8741 JM |
1497 | } |
1498 | ||
243a9253 PA |
1499 | /* Print the result of a function at the end of a 'finish' command. |
1500 | RV points at an object representing the captured return value/type | |
1501 | and its position in the value history. */ | |
1502 | ||
1503 | void | |
1504 | print_return_value (struct ui_out *uiout, struct return_value_info *rv) | |
1505 | { | |
f097f5ad | 1506 | if (rv->type == NULL |
78134374 | 1507 | || check_typedef (rv->type)->code () == TYPE_CODE_VOID) |
243a9253 PA |
1508 | return; |
1509 | ||
a70b8144 | 1510 | try |
243a9253 PA |
1511 | { |
1512 | /* print_return_value_1 can throw an exception in some | |
1513 | circumstances. We need to catch this so that we still | |
1514 | delete the breakpoint. */ | |
1515 | print_return_value_1 (uiout, rv); | |
1516 | } | |
230d2906 | 1517 | catch (const gdb_exception &ex) |
243a9253 PA |
1518 | { |
1519 | exception_print (gdb_stdout, ex); | |
1520 | } | |
243a9253 PA |
1521 | } |
1522 | ||
1523 | /* Data for the FSM that manages the finish command. */ | |
f941662f | 1524 | |
46e3ed7f | 1525 | struct finish_command_fsm : public thread_fsm |
43ff13b4 | 1526 | { |
243a9253 PA |
1527 | /* The momentary breakpoint set at the function's return address in |
1528 | the caller. */ | |
46e3ed7f | 1529 | breakpoint_up breakpoint; |
243a9253 PA |
1530 | |
1531 | /* The function that we're stepping out of. */ | |
46e3ed7f | 1532 | struct symbol *function = nullptr; |
8a6c4031 | 1533 | |
243a9253 PA |
1534 | /* If the FSM finishes successfully, this stores the function's |
1535 | return value. */ | |
46e3ed7f | 1536 | struct return_value_info return_value_info {}; |
c5aa993b | 1537 | |
46e3ed7f TT |
1538 | explicit finish_command_fsm (struct interp *cmd_interp) |
1539 | : thread_fsm (cmd_interp) | |
1540 | { | |
1541 | } | |
243a9253 | 1542 | |
46e3ed7f TT |
1543 | bool should_stop (struct thread_info *thread) override; |
1544 | void clean_up (struct thread_info *thread) override; | |
1545 | struct return_value_info *return_value () override; | |
1546 | enum async_reply_reason do_async_reply_reason () override; | |
1547 | }; | |
347bddb7 | 1548 | |
243a9253 PA |
1549 | /* Implementation of the 'should_stop' FSM method for the finish |
1550 | commands. Detects whether the thread stepped out of the function | |
1551 | successfully, and if so, captures the function's return value and | |
1552 | marks the FSM finished. */ | |
1553 | ||
46e3ed7f TT |
1554 | bool |
1555 | finish_command_fsm::should_stop (struct thread_info *tp) | |
243a9253 | 1556 | { |
46e3ed7f | 1557 | struct return_value_info *rv = &return_value_info; |
243a9253 | 1558 | |
46e3ed7f | 1559 | if (function != NULL |
243a9253 | 1560 | && bpstat_find_breakpoint (tp->control.stop_bpstat, |
46e3ed7f | 1561 | breakpoint.get ()) != NULL) |
43ff13b4 | 1562 | { |
243a9253 | 1563 | /* We're done. */ |
46e3ed7f | 1564 | set_finished (); |
bfec99b2 | 1565 | |
46e3ed7f | 1566 | rv->type = TYPE_TARGET_TYPE (SYMBOL_TYPE (function)); |
243a9253 PA |
1567 | if (rv->type == NULL) |
1568 | internal_error (__FILE__, __LINE__, | |
1569 | _("finish_command: function has no target type")); | |
f5871ec0 | 1570 | |
78134374 | 1571 | if (check_typedef (rv->type)->code () != TYPE_CODE_VOID) |
40c549d6 | 1572 | { |
243a9253 PA |
1573 | struct value *func; |
1574 | ||
46e3ed7f | 1575 | func = read_var_value (function, NULL, get_current_frame ()); |
0700e23e | 1576 | rv->value = get_return_value (func, rv->type); |
aca20ec4 KB |
1577 | if (rv->value != NULL) |
1578 | rv->value_history_index = record_latest_value (rv->value); | |
243a9253 PA |
1579 | } |
1580 | } | |
1581 | else if (tp->control.stop_step) | |
1582 | { | |
1583 | /* Finishing from an inline frame, or reverse finishing. In | |
1584 | either case, there's no way to retrieve the return value. */ | |
46e3ed7f | 1585 | set_finished (); |
243a9253 | 1586 | } |
fa4cd53f | 1587 | |
46e3ed7f | 1588 | return true; |
243a9253 | 1589 | } |
40c549d6 | 1590 | |
243a9253 PA |
1591 | /* Implementation of the 'clean_up' FSM method for the finish |
1592 | commands. */ | |
fa4cd53f | 1593 | |
46e3ed7f TT |
1594 | void |
1595 | finish_command_fsm::clean_up (struct thread_info *thread) | |
243a9253 | 1596 | { |
46e3ed7f | 1597 | breakpoint.reset (); |
8980e177 | 1598 | delete_longjmp_breakpoint (thread->global_num); |
243a9253 | 1599 | } |
f941662f | 1600 | |
243a9253 PA |
1601 | /* Implementation of the 'return_value' FSM method for the finish |
1602 | commands. */ | |
1603 | ||
46e3ed7f TT |
1604 | struct return_value_info * |
1605 | finish_command_fsm::return_value () | |
243a9253 | 1606 | { |
46e3ed7f | 1607 | return &return_value_info; |
43ff13b4 JM |
1608 | } |
1609 | ||
243a9253 PA |
1610 | /* Implementation of the 'async_reply_reason' FSM method for the |
1611 | finish commands. */ | |
1612 | ||
46e3ed7f TT |
1613 | enum async_reply_reason |
1614 | finish_command_fsm::do_async_reply_reason () | |
604ead4a | 1615 | { |
243a9253 PA |
1616 | if (execution_direction == EXEC_REVERSE) |
1617 | return EXEC_ASYNC_END_STEPPING_RANGE; | |
1618 | else | |
1619 | return EXEC_ASYNC_FUNCTION_FINISHED; | |
604ead4a PA |
1620 | } |
1621 | ||
b2175913 MS |
1622 | /* finish_backward -- helper function for finish_command. */ |
1623 | ||
1624 | static void | |
243a9253 | 1625 | finish_backward (struct finish_command_fsm *sm) |
b2175913 MS |
1626 | { |
1627 | struct symtab_and_line sal; | |
1628 | struct thread_info *tp = inferior_thread (); | |
1c7819ef | 1629 | CORE_ADDR pc; |
b2175913 | 1630 | CORE_ADDR func_addr; |
b2175913 | 1631 | |
1c7819ef PA |
1632 | pc = get_frame_pc (get_current_frame ()); |
1633 | ||
1634 | if (find_pc_partial_function (pc, NULL, &func_addr, NULL) == 0) | |
1f267ae3 | 1635 | error (_("Cannot find bounds of current function")); |
b2175913 MS |
1636 | |
1637 | sal = find_pc_line (func_addr, 0); | |
1638 | ||
9da8c2a0 | 1639 | tp->control.proceed_to_finish = 1; |
b2175913 MS |
1640 | /* Special case: if we're sitting at the function entry point, |
1641 | then all we need to do is take a reverse singlestep. We | |
1642 | don't need to set a breakpoint, and indeed it would do us | |
1643 | no good to do so. | |
1644 | ||
1645 | Note that this can only happen at frame #0, since there's | |
1646 | no way that a function up the stack can have a return address | |
1647 | that's equal to its entry point. */ | |
1648 | ||
1c7819ef | 1649 | if (sal.pc != pc) |
b2175913 | 1650 | { |
a6d9a66e UW |
1651 | struct frame_info *frame = get_selected_frame (NULL); |
1652 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
9da8c2a0 PA |
1653 | |
1654 | /* Set a step-resume at the function's entry point. Once that's | |
1655 | hit, we'll do one more step backwards. */ | |
51abb421 | 1656 | symtab_and_line sr_sal; |
9da8c2a0 PA |
1657 | sr_sal.pc = sal.pc; |
1658 | sr_sal.pspace = get_frame_program_space (frame); | |
1659 | insert_step_resume_breakpoint_at_sal (gdbarch, | |
1660 | sr_sal, null_frame_id); | |
a6d9a66e | 1661 | |
64ce06e4 | 1662 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
b2175913 MS |
1663 | } |
1664 | else | |
b2175913 | 1665 | { |
9da8c2a0 PA |
1666 | /* We're almost there -- we just need to back up by one more |
1667 | single-step. */ | |
16c381f0 | 1668 | tp->control.step_range_start = tp->control.step_range_end = 1; |
64ce06e4 | 1669 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
b2175913 | 1670 | } |
b2175913 MS |
1671 | } |
1672 | ||
243a9253 PA |
1673 | /* finish_forward -- helper function for finish_command. FRAME is the |
1674 | frame that called the function we're about to step out of. */ | |
b2175913 MS |
1675 | |
1676 | static void | |
243a9253 | 1677 | finish_forward (struct finish_command_fsm *sm, struct frame_info *frame) |
b2175913 | 1678 | { |
def166f6 | 1679 | struct frame_id frame_id = get_frame_id (frame); |
a6d9a66e | 1680 | struct gdbarch *gdbarch = get_frame_arch (frame); |
b2175913 MS |
1681 | struct symtab_and_line sal; |
1682 | struct thread_info *tp = inferior_thread (); | |
b2175913 MS |
1683 | |
1684 | sal = find_pc_line (get_frame_pc (frame), 0); | |
1685 | sal.pc = get_frame_pc (frame); | |
1686 | ||
243a9253 PA |
1687 | sm->breakpoint = set_momentary_breakpoint (gdbarch, sal, |
1688 | get_stack_frame_id (frame), | |
46e3ed7f | 1689 | bp_finish); |
b2175913 | 1690 | |
c70a6932 JK |
1691 | /* set_momentary_breakpoint invalidates FRAME. */ |
1692 | frame = NULL; | |
1693 | ||
def166f6 | 1694 | set_longjmp_breakpoint (tp, frame_id); |
186c406b | 1695 | |
46c03469 | 1696 | /* We want to print return value, please... */ |
16c381f0 | 1697 | tp->control.proceed_to_finish = 1; |
b2175913 | 1698 | |
243a9253 | 1699 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
b2175913 MS |
1700 | } |
1701 | ||
e3b5daf9 MM |
1702 | /* Skip frames for "finish". */ |
1703 | ||
1704 | static struct frame_info * | |
1705 | skip_finish_frames (struct frame_info *frame) | |
1706 | { | |
1707 | struct frame_info *start; | |
1708 | ||
1709 | do | |
1710 | { | |
1711 | start = frame; | |
1712 | ||
1713 | frame = skip_tailcall_frames (frame); | |
1714 | if (frame == NULL) | |
1715 | break; | |
1716 | ||
1717 | frame = skip_unwritable_frames (frame); | |
1718 | if (frame == NULL) | |
1719 | break; | |
1720 | } | |
1721 | while (start != frame); | |
1722 | ||
1723 | return frame; | |
1724 | } | |
1725 | ||
f941662f MK |
1726 | /* "finish": Set a temporary breakpoint at the place the selected |
1727 | frame will return to, then continue. */ | |
c906108c SS |
1728 | |
1729 | static void | |
0b39b52e | 1730 | finish_command (const char *arg, int from_tty) |
c906108c | 1731 | { |
52f0bd74 | 1732 | struct frame_info *frame; |
6c4486e6 | 1733 | int async_exec; |
243a9253 PA |
1734 | struct finish_command_fsm *sm; |
1735 | struct thread_info *tp; | |
43ff13b4 | 1736 | |
4247603b | 1737 | ERROR_NO_INFERIOR; |
573cda03 | 1738 | ensure_not_tfind_mode (); |
4247603b PA |
1739 | ensure_valid_thread (); |
1740 | ensure_not_running (); | |
573cda03 | 1741 | |
f941662f | 1742 | /* Find out whether we must run in the background. */ |
6be9a197 TT |
1743 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (arg, &async_exec); |
1744 | arg = stripped.get (); | |
43ff13b4 | 1745 | |
328d42d8 | 1746 | prepare_execution_command (current_inferior ()->top_target (), async_exec); |
c906108c SS |
1747 | |
1748 | if (arg) | |
8a3fe4f8 | 1749 | error (_("The \"finish\" command does not take any arguments.")); |
c906108c | 1750 | |
206415a3 | 1751 | frame = get_prev_frame (get_selected_frame (_("No selected frame."))); |
c906108c | 1752 | if (frame == 0) |
8a3fe4f8 | 1753 | error (_("\"finish\" not meaningful in the outermost frame.")); |
c906108c | 1754 | |
70509625 | 1755 | clear_proceed_status (0); |
c906108c | 1756 | |
243a9253 PA |
1757 | tp = inferior_thread (); |
1758 | ||
46e3ed7f | 1759 | sm = new finish_command_fsm (command_interp ()); |
243a9253 | 1760 | |
46e3ed7f | 1761 | tp->thread_fsm = sm; |
243a9253 | 1762 | |
edb3359d | 1763 | /* Finishing from an inline frame is completely different. We don't |
243a9253 | 1764 | try to show the "return value" - no way to locate it. */ |
edb3359d DJ |
1765 | if (get_frame_type (get_selected_frame (_("No selected frame."))) |
1766 | == INLINE_FRAME) | |
1767 | { | |
1768 | /* Claim we are stepping in the calling frame. An empty step | |
1769 | range means that we will stop once we aren't in a function | |
1770 | called by that frame. We don't use the magic "1" value for | |
1771 | step_range_end, because then infrun will think this is nexti, | |
1772 | and not step over the rest of this inlined function call. */ | |
29734269 | 1773 | set_step_info (tp, frame, {}); |
16c381f0 JK |
1774 | tp->control.step_range_start = get_frame_pc (frame); |
1775 | tp->control.step_range_end = tp->control.step_range_start; | |
1776 | tp->control.step_over_calls = STEP_OVER_ALL; | |
edb3359d DJ |
1777 | |
1778 | /* Print info on the selected frame, including level number but not | |
1779 | source. */ | |
1780 | if (from_tty) | |
1781 | { | |
1782 | printf_filtered (_("Run till exit from ")); | |
08d72866 | 1783 | print_stack_frame (get_selected_frame (NULL), 1, LOCATION, 0); |
edb3359d DJ |
1784 | } |
1785 | ||
64ce06e4 | 1786 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
edb3359d DJ |
1787 | return; |
1788 | } | |
1789 | ||
c906108c SS |
1790 | /* Find the function we will return from. */ |
1791 | ||
243a9253 | 1792 | sm->function = find_pc_function (get_frame_pc (get_selected_frame (NULL))); |
c906108c | 1793 | |
f941662f MK |
1794 | /* Print info on the selected frame, including level number but not |
1795 | source. */ | |
c906108c SS |
1796 | if (from_tty) |
1797 | { | |
b2175913 MS |
1798 | if (execution_direction == EXEC_REVERSE) |
1799 | printf_filtered (_("Run back to call of ")); | |
1800 | else | |
743649fd | 1801 | { |
243a9253 | 1802 | if (sm->function != NULL && TYPE_NO_RETURN (sm->function->type) |
743649fd MW |
1803 | && !query (_("warning: Function %s does not return normally.\n" |
1804 | "Try to finish anyway? "), | |
987012b8 | 1805 | sm->function->print_name ())) |
743649fd MW |
1806 | error (_("Not confirmed.")); |
1807 | printf_filtered (_("Run till exit from ")); | |
1808 | } | |
b2175913 | 1809 | |
08d72866 | 1810 | print_stack_frame (get_selected_frame (NULL), 1, LOCATION, 0); |
c906108c SS |
1811 | } |
1812 | ||
b2175913 | 1813 | if (execution_direction == EXEC_REVERSE) |
243a9253 | 1814 | finish_backward (sm); |
b2175913 | 1815 | else |
33b4777c | 1816 | { |
e3b5daf9 | 1817 | frame = skip_finish_frames (frame); |
7eb89530 | 1818 | |
33b4777c MM |
1819 | if (frame == NULL) |
1820 | error (_("Cannot find the caller frame.")); | |
1821 | ||
1822 | finish_forward (sm, frame); | |
1823 | } | |
c906108c SS |
1824 | } |
1825 | \f | |
f941662f | 1826 | |
c906108c | 1827 | static void |
1d12d88f | 1828 | info_program_command (const char *args, int from_tty) |
c906108c | 1829 | { |
347bddb7 PA |
1830 | bpstat bs; |
1831 | int num, stat; | |
347bddb7 | 1832 | ptid_t ptid; |
5b6d1e4f | 1833 | process_stratum_target *proc_target; |
c5aa993b | 1834 | |
55f6301a | 1835 | if (!target_has_execution ()) |
c906108c | 1836 | { |
a3f17187 | 1837 | printf_filtered (_("The program being debugged is not being run.\n")); |
c906108c SS |
1838 | return; |
1839 | } | |
1840 | ||
347bddb7 | 1841 | if (non_stop) |
5b6d1e4f PA |
1842 | { |
1843 | ptid = inferior_ptid; | |
1844 | proc_target = current_inferior ()->process_target (); | |
1845 | } | |
347bddb7 | 1846 | else |
5b6d1e4f | 1847 | get_last_target_status (&proc_target, &ptid, nullptr); |
347bddb7 | 1848 | |
9e7f3bbb | 1849 | if (ptid == null_ptid || ptid == minus_one_ptid) |
00431a78 PA |
1850 | error (_("No selected thread.")); |
1851 | ||
5b6d1e4f | 1852 | thread_info *tp = find_thread_ptid (proc_target, ptid); |
00431a78 PA |
1853 | |
1854 | if (tp->state == THREAD_EXITED) | |
347bddb7 | 1855 | error (_("Invalid selected thread.")); |
00431a78 | 1856 | else if (tp->state == THREAD_RUNNING) |
347bddb7 PA |
1857 | error (_("Selected thread is running.")); |
1858 | ||
16c381f0 | 1859 | bs = tp->control.stop_bpstat; |
347bddb7 PA |
1860 | stat = bpstat_num (&bs, &num); |
1861 | ||
c906108c | 1862 | target_files_info (); |
5af949e3 | 1863 | printf_filtered (_("Program stopped at %s.\n"), |
1edb66d8 | 1864 | paddress (target_gdbarch (), tp->stop_pc ())); |
16c381f0 | 1865 | if (tp->control.stop_step) |
a3f17187 | 1866 | printf_filtered (_("It stopped after being stepped.\n")); |
8671a17b | 1867 | else if (stat != 0) |
c906108c SS |
1868 | { |
1869 | /* There may be several breakpoints in the same place, so this | |
dda83cd7 | 1870 | isn't as strange as it seems. */ |
8671a17b | 1871 | while (stat != 0) |
c906108c | 1872 | { |
8671a17b | 1873 | if (stat < 0) |
c906108c | 1874 | { |
3e43a32a MS |
1875 | printf_filtered (_("It stopped at a breakpoint " |
1876 | "that has since been deleted.\n")); | |
c906108c SS |
1877 | } |
1878 | else | |
a3f17187 | 1879 | printf_filtered (_("It stopped at breakpoint %d.\n"), num); |
8671a17b | 1880 | stat = bpstat_num (&bs, &num); |
c906108c SS |
1881 | } |
1882 | } | |
1edb66d8 | 1883 | else if (tp->stop_signal () != GDB_SIGNAL_0) |
c906108c | 1884 | { |
a3f17187 | 1885 | printf_filtered (_("It stopped with signal %s, %s.\n"), |
1edb66d8 SM |
1886 | gdb_signal_to_name (tp->stop_signal ()), |
1887 | gdb_signal_to_string (tp->stop_signal ())); | |
c906108c SS |
1888 | } |
1889 | ||
0d41ba00 | 1890 | if (from_tty) |
c906108c | 1891 | { |
3e43a32a MS |
1892 | printf_filtered (_("Type \"info stack\" or \"info " |
1893 | "registers\" for more information.\n")); | |
c906108c SS |
1894 | } |
1895 | } | |
1896 | \f | |
1897 | static void | |
69f476a3 | 1898 | environment_info (const char *var, int from_tty) |
c906108c SS |
1899 | { |
1900 | if (var) | |
1901 | { | |
9a6c7d9c | 1902 | const char *val = current_inferior ()->environment.get (var); |
abbb1732 | 1903 | |
c906108c SS |
1904 | if (val) |
1905 | { | |
1906 | puts_filtered (var); | |
1907 | puts_filtered (" = "); | |
1908 | puts_filtered (val); | |
1909 | puts_filtered ("\n"); | |
1910 | } | |
1911 | else | |
1912 | { | |
1913 | puts_filtered ("Environment variable \""); | |
1914 | puts_filtered (var); | |
1915 | puts_filtered ("\" not defined.\n"); | |
1916 | } | |
1917 | } | |
1918 | else | |
1919 | { | |
9a6c7d9c | 1920 | char **envp = current_inferior ()->environment.envp (); |
abbb1732 | 1921 | |
9a6c7d9c | 1922 | for (int idx = 0; envp[idx] != NULL; ++idx) |
c906108c | 1923 | { |
9a6c7d9c | 1924 | puts_filtered (envp[idx]); |
c906108c SS |
1925 | puts_filtered ("\n"); |
1926 | } | |
1927 | } | |
1928 | } | |
1929 | ||
1930 | static void | |
69f476a3 | 1931 | set_environment_command (const char *arg, int from_tty) |
c906108c | 1932 | { |
69f476a3 | 1933 | const char *p, *val; |
c906108c SS |
1934 | int nullset = 0; |
1935 | ||
1936 | if (arg == 0) | |
e2e0b3e5 | 1937 | error_no_arg (_("environment variable and value")); |
c906108c | 1938 | |
85102364 | 1939 | /* Find separation between variable name and value. */ |
c906108c SS |
1940 | p = (char *) strchr (arg, '='); |
1941 | val = (char *) strchr (arg, ' '); | |
1942 | ||
1943 | if (p != 0 && val != 0) | |
1944 | { | |
1945 | /* We have both a space and an equals. If the space is before the | |
dda83cd7 SM |
1946 | equals, walk forward over the spaces til we see a nonspace |
1947 | (possibly the equals). */ | |
c906108c SS |
1948 | if (p > val) |
1949 | while (*val == ' ') | |
1950 | val++; | |
1951 | ||
1952 | /* Now if the = is after the char following the spaces, | |
dda83cd7 | 1953 | take the char following the spaces. */ |
c906108c SS |
1954 | if (p > val) |
1955 | p = val - 1; | |
1956 | } | |
1957 | else if (val != 0 && p == 0) | |
1958 | p = val; | |
1959 | ||
1960 | if (p == arg) | |
e2e0b3e5 | 1961 | error_no_arg (_("environment variable to set")); |
c906108c SS |
1962 | |
1963 | if (p == 0 || p[1] == 0) | |
1964 | { | |
1965 | nullset = 1; | |
1966 | if (p == 0) | |
1777feb0 | 1967 | p = arg + strlen (arg); /* So that savestring below will work. */ |
c906108c SS |
1968 | } |
1969 | else | |
1970 | { | |
1777feb0 | 1971 | /* Not setting variable value to null. */ |
c906108c SS |
1972 | val = p + 1; |
1973 | while (*val == ' ' || *val == '\t') | |
1974 | val++; | |
1975 | } | |
1976 | ||
c5aa993b JM |
1977 | while (p != arg && (p[-1] == ' ' || p[-1] == '\t')) |
1978 | p--; | |
c906108c | 1979 | |
69f476a3 | 1980 | std::string var (arg, p - arg); |
c906108c SS |
1981 | if (nullset) |
1982 | { | |
3e43a32a MS |
1983 | printf_filtered (_("Setting environment variable " |
1984 | "\"%s\" to null value.\n"), | |
69f476a3 TT |
1985 | var.c_str ()); |
1986 | current_inferior ()->environment.set (var.c_str (), ""); | |
c906108c SS |
1987 | } |
1988 | else | |
69f476a3 | 1989 | current_inferior ()->environment.set (var.c_str (), val); |
c906108c SS |
1990 | } |
1991 | ||
1992 | static void | |
69f476a3 | 1993 | unset_environment_command (const char *var, int from_tty) |
c906108c SS |
1994 | { |
1995 | if (var == 0) | |
1996 | { | |
1997 | /* If there is no argument, delete all environment variables. | |
dda83cd7 | 1998 | Ask for confirmation if reading from the terminal. */ |
e2e0b3e5 | 1999 | if (!from_tty || query (_("Delete all environment variables? "))) |
206726fb | 2000 | current_inferior ()->environment.clear (); |
c906108c SS |
2001 | } |
2002 | else | |
9a6c7d9c | 2003 | current_inferior ()->environment.unset (var); |
c906108c SS |
2004 | } |
2005 | ||
1777feb0 | 2006 | /* Handle the execution path (PATH variable). */ |
c906108c SS |
2007 | |
2008 | static const char path_var_name[] = "PATH"; | |
2009 | ||
c906108c | 2010 | static void |
69f476a3 | 2011 | path_info (const char *args, int from_tty) |
c906108c SS |
2012 | { |
2013 | puts_filtered ("Executable and object file path: "); | |
9a6c7d9c | 2014 | puts_filtered (current_inferior ()->environment.get (path_var_name)); |
c906108c SS |
2015 | puts_filtered ("\n"); |
2016 | } | |
2017 | ||
2018 | /* Add zero or more directories to the front of the execution path. */ | |
2019 | ||
2020 | static void | |
0b39b52e | 2021 | path_command (const char *dirname, int from_tty) |
c906108c | 2022 | { |
a121b7c1 | 2023 | const char *env; |
abbb1732 | 2024 | |
c906108c | 2025 | dont_repeat (); |
9a6c7d9c | 2026 | env = current_inferior ()->environment.get (path_var_name); |
1777feb0 | 2027 | /* Can be null if path is not set. */ |
c906108c SS |
2028 | if (!env) |
2029 | env = ""; | |
e0700ba4 SM |
2030 | std::string exec_path = env; |
2031 | mod_path (dirname, exec_path); | |
2032 | current_inferior ()->environment.set (path_var_name, exec_path.c_str ()); | |
c906108c | 2033 | if (from_tty) |
cafb3438 | 2034 | path_info (NULL, from_tty); |
c906108c | 2035 | } |
c906108c | 2036 | \f |
c5aa993b | 2037 | |
e813d34a RK |
2038 | static void |
2039 | pad_to_column (string_file &stream, int col) | |
2040 | { | |
2041 | /* At least one space must be printed to separate columns. */ | |
2042 | stream.putc (' '); | |
2043 | const int size = stream.size (); | |
2044 | if (size < col) | |
2045 | stream.puts (n_spaces (col - size)); | |
2046 | } | |
2047 | ||
1292279a PA |
2048 | /* Print out the register NAME with value VAL, to FILE, in the default |
2049 | fashion. */ | |
2050 | ||
2051 | static void | |
2052 | default_print_one_register_info (struct ui_file *file, | |
2053 | const char *name, | |
2054 | struct value *val) | |
2055 | { | |
2056 | struct type *regtype = value_type (val); | |
f69d9aef | 2057 | int print_raw_format; |
e813d34a RK |
2058 | string_file format_stream; |
2059 | enum tab_stops | |
2060 | { | |
2061 | value_column_1 = 15, | |
2062 | /* Give enough room for "0x", 16 hex digits and two spaces in | |
dda83cd7 | 2063 | preceding column. */ |
e813d34a RK |
2064 | value_column_2 = value_column_1 + 2 + 16 + 2, |
2065 | }; | |
1292279a | 2066 | |
e813d34a RK |
2067 | format_stream.puts (name); |
2068 | pad_to_column (format_stream, value_column_1); | |
1292279a | 2069 | |
f69d9aef AB |
2070 | print_raw_format = (value_entirely_available (val) |
2071 | && !value_optimized_out (val)); | |
1292279a PA |
2072 | |
2073 | /* If virtual format is floating, print it that way, and in raw | |
2074 | hex. */ | |
78134374 SM |
2075 | if (regtype->code () == TYPE_CODE_FLT |
2076 | || regtype->code () == TYPE_CODE_DECFLOAT) | |
1292279a | 2077 | { |
1292279a | 2078 | struct value_print_options opts; |
50888e42 | 2079 | const gdb_byte *valaddr = value_contents_for_printing (val).data (); |
34877895 | 2080 | enum bfd_endian byte_order = type_byte_order (regtype); |
1292279a PA |
2081 | |
2082 | get_user_print_options (&opts); | |
2083 | opts.deref_ref = 1; | |
2084 | ||
3444c526 | 2085 | common_val_print (val, &format_stream, 0, &opts, current_language); |
1292279a | 2086 | |
f69d9aef AB |
2087 | if (print_raw_format) |
2088 | { | |
e813d34a RK |
2089 | pad_to_column (format_stream, value_column_2); |
2090 | format_stream.puts ("(raw "); | |
2091 | print_hex_chars (&format_stream, valaddr, TYPE_LENGTH (regtype), | |
2092 | byte_order, true); | |
2093 | format_stream.putc (')'); | |
f69d9aef | 2094 | } |
1292279a PA |
2095 | } |
2096 | else | |
2097 | { | |
2098 | struct value_print_options opts; | |
2099 | ||
2100 | /* Print the register in hex. */ | |
2101 | get_formatted_print_options (&opts, 'x'); | |
2102 | opts.deref_ref = 1; | |
3444c526 | 2103 | common_val_print (val, &format_stream, 0, &opts, current_language); |
1292279a PA |
2104 | /* If not a vector register, print it also according to its |
2105 | natural format. */ | |
bd63c870 | 2106 | if (print_raw_format && regtype->is_vector () == 0) |
1292279a | 2107 | { |
e813d34a | 2108 | pad_to_column (format_stream, value_column_2); |
1292279a PA |
2109 | get_user_print_options (&opts); |
2110 | opts.deref_ref = 1; | |
3444c526 | 2111 | common_val_print (val, &format_stream, 0, &opts, current_language); |
1292279a PA |
2112 | } |
2113 | } | |
2114 | ||
e813d34a | 2115 | fputs_filtered (format_stream.c_str (), file); |
1292279a PA |
2116 | fprintf_filtered (file, "\n"); |
2117 | } | |
2118 | ||
1777feb0 | 2119 | /* Print out the machine register regnum. If regnum is -1, print all |
0ab7a791 AC |
2120 | registers (print_all == 1) or all non-float and non-vector |
2121 | registers (print_all == 0). | |
c906108c SS |
2122 | |
2123 | For most machines, having all_registers_info() print the | |
0ab7a791 AC |
2124 | register(s) one per line is good enough. If a different format is |
2125 | required, (eg, for MIPS or Pyramid 90x, which both have lots of | |
2126 | regs), or there is an existing convention for showing all the | |
2127 | registers, define the architecture method PRINT_REGISTERS_INFO to | |
2128 | provide that format. */ | |
c906108c | 2129 | |
666e11c5 | 2130 | void |
0ab7a791 AC |
2131 | default_print_registers_info (struct gdbarch *gdbarch, |
2132 | struct ui_file *file, | |
2133 | struct frame_info *frame, | |
2134 | int regnum, int print_all) | |
c906108c | 2135 | { |
0ab7a791 | 2136 | int i; |
f6efe3f8 | 2137 | const int numregs = gdbarch_num_cooked_regs (gdbarch); |
0ab7a791 | 2138 | |
c906108c SS |
2139 | for (i = 0; i < numregs; i++) |
2140 | { | |
4782dc19 | 2141 | /* Decide between printing all regs, non-float / vector regs, or |
dda83cd7 | 2142 | specific reg. */ |
c5aa993b JM |
2143 | if (regnum == -1) |
2144 | { | |
f9418c0f | 2145 | if (print_all) |
4782dc19 | 2146 | { |
f9418c0f | 2147 | if (!gdbarch_register_reggroup_p (gdbarch, i, all_reggroup)) |
4782dc19 | 2148 | continue; |
f9418c0f AC |
2149 | } |
2150 | else | |
2151 | { | |
2152 | if (!gdbarch_register_reggroup_p (gdbarch, i, general_reggroup)) | |
4782dc19 AC |
2153 | continue; |
2154 | } | |
c5aa993b JM |
2155 | } |
2156 | else | |
2157 | { | |
2158 | if (i != regnum) | |
2159 | continue; | |
2160 | } | |
c906108c SS |
2161 | |
2162 | /* If the register name is empty, it is undefined for this | |
dda83cd7 | 2163 | processor, so don't display anything. */ |
a4bd449d UW |
2164 | if (gdbarch_register_name (gdbarch, i) == NULL |
2165 | || *(gdbarch_register_name (gdbarch, i)) == '\0') | |
c906108c SS |
2166 | continue; |
2167 | ||
1292279a PA |
2168 | default_print_one_register_info (file, |
2169 | gdbarch_register_name (gdbarch, i), | |
901461f8 | 2170 | value_of_register (i, frame)); |
c906108c SS |
2171 | } |
2172 | } | |
c906108c | 2173 | |
c906108c | 2174 | void |
1d12d88f | 2175 | registers_info (const char *addr_exp, int fpregs) |
c906108c | 2176 | { |
206415a3 | 2177 | struct frame_info *frame; |
a4bd449d | 2178 | struct gdbarch *gdbarch; |
c906108c | 2179 | |
9dccd06e | 2180 | if (!target_has_registers ()) |
8a3fe4f8 | 2181 | error (_("The program has no registers now.")); |
206415a3 | 2182 | frame = get_selected_frame (NULL); |
a4bd449d | 2183 | gdbarch = get_frame_arch (frame); |
c906108c SS |
2184 | |
2185 | if (!addr_exp) | |
2186 | { | |
a4bd449d | 2187 | gdbarch_print_registers_info (gdbarch, gdb_stdout, |
206415a3 | 2188 | frame, -1, fpregs); |
c906108c SS |
2189 | return; |
2190 | } | |
2191 | ||
f9418c0f | 2192 | while (*addr_exp != '\0') |
c5aa993b | 2193 | { |
1d12d88f | 2194 | const char *start; |
f9418c0f | 2195 | const char *end; |
c906108c | 2196 | |
529480d0 KS |
2197 | /* Skip leading white space. */ |
2198 | addr_exp = skip_spaces (addr_exp); | |
c906108c | 2199 | |
f9418c0f | 2200 | /* Discard any leading ``$''. Check that there is something |
dda83cd7 | 2201 | resembling a register following it. */ |
f9418c0f AC |
2202 | if (addr_exp[0] == '$') |
2203 | addr_exp++; | |
2204 | if (isspace ((*addr_exp)) || (*addr_exp) == '\0') | |
8a3fe4f8 | 2205 | error (_("Missing register name")); |
c906108c | 2206 | |
f9418c0f AC |
2207 | /* Find the start/end of this register name/num/group. */ |
2208 | start = addr_exp; | |
2209 | while ((*addr_exp) != '\0' && !isspace ((*addr_exp))) | |
2210 | addr_exp++; | |
2211 | end = addr_exp; | |
ad842144 | 2212 | |
f9418c0f AC |
2213 | /* Figure out what we've found and display it. */ |
2214 | ||
2215 | /* A register name? */ | |
2216 | { | |
029a67e4 | 2217 | int regnum = user_reg_map_name_to_regnum (gdbarch, start, end - start); |
abbb1732 | 2218 | |
f9418c0f AC |
2219 | if (regnum >= 0) |
2220 | { | |
ad842144 MR |
2221 | /* User registers lie completely outside of the range of |
2222 | normal registers. Catch them early so that the target | |
2223 | never sees them. */ | |
f6efe3f8 | 2224 | if (regnum >= gdbarch_num_cooked_regs (gdbarch)) |
ad842144 | 2225 | { |
1292279a PA |
2226 | struct value *regval = value_of_user_reg (regnum, frame); |
2227 | const char *regname = user_reg_map_regnum_to_name (gdbarch, | |
2228 | regnum); | |
2229 | ||
2230 | /* Print in the same fashion | |
2231 | gdbarch_print_registers_info's default | |
2232 | implementation prints. */ | |
2233 | default_print_one_register_info (gdb_stdout, | |
2234 | regname, | |
2235 | regval); | |
ad842144 MR |
2236 | } |
2237 | else | |
2238 | gdbarch_print_registers_info (gdbarch, gdb_stdout, | |
2239 | frame, regnum, fpregs); | |
f9418c0f AC |
2240 | continue; |
2241 | } | |
2242 | } | |
ad842144 | 2243 | |
f9418c0f AC |
2244 | /* A register group? */ |
2245 | { | |
6c7d17ba | 2246 | struct reggroup *group; |
abbb1732 | 2247 | |
a4bd449d | 2248 | for (group = reggroup_next (gdbarch, NULL); |
6c7d17ba | 2249 | group != NULL; |
a4bd449d | 2250 | group = reggroup_next (gdbarch, group)) |
f9418c0f AC |
2251 | { |
2252 | /* Don't bother with a length check. Should the user | |
2253 | enter a short register group name, go with the first | |
2254 | group that matches. */ | |
6c7d17ba | 2255 | if (strncmp (start, reggroup_name (group), end - start) == 0) |
f9418c0f AC |
2256 | break; |
2257 | } | |
6c7d17ba | 2258 | if (group != NULL) |
f9418c0f AC |
2259 | { |
2260 | int regnum; | |
abbb1732 | 2261 | |
f57d151a | 2262 | for (regnum = 0; |
f6efe3f8 | 2263 | regnum < gdbarch_num_cooked_regs (gdbarch); |
f57d151a | 2264 | regnum++) |
f9418c0f | 2265 | { |
a4bd449d UW |
2266 | if (gdbarch_register_reggroup_p (gdbarch, regnum, group)) |
2267 | gdbarch_print_registers_info (gdbarch, | |
206415a3 | 2268 | gdb_stdout, frame, |
f9418c0f AC |
2269 | regnum, fpregs); |
2270 | } | |
2271 | continue; | |
2272 | } | |
2273 | } | |
c906108c | 2274 | |
f9418c0f | 2275 | /* Nothing matched. */ |
8a3fe4f8 | 2276 | error (_("Invalid register `%.*s'"), (int) (end - start), start); |
c5aa993b | 2277 | } |
c906108c SS |
2278 | } |
2279 | ||
1dd5fedc | 2280 | static void |
1d12d88f | 2281 | info_all_registers_command (const char *addr_exp, int from_tty) |
c906108c SS |
2282 | { |
2283 | registers_info (addr_exp, 1); | |
2284 | } | |
2285 | ||
a58dd373 | 2286 | static void |
1d12d88f | 2287 | info_registers_command (const char *addr_exp, int from_tty) |
c906108c SS |
2288 | { |
2289 | registers_info (addr_exp, 0); | |
2290 | } | |
e76f1f2e AC |
2291 | |
2292 | static void | |
d80b854b | 2293 | print_vector_info (struct ui_file *file, |
e76f1f2e AC |
2294 | struct frame_info *frame, const char *args) |
2295 | { | |
d80b854b UW |
2296 | struct gdbarch *gdbarch = get_frame_arch (frame); |
2297 | ||
e76f1f2e AC |
2298 | if (gdbarch_print_vector_info_p (gdbarch)) |
2299 | gdbarch_print_vector_info (gdbarch, file, frame, args); | |
2300 | else | |
2301 | { | |
2302 | int regnum; | |
2303 | int printed_something = 0; | |
ab4327e0 | 2304 | |
f6efe3f8 | 2305 | for (regnum = 0; regnum < gdbarch_num_cooked_regs (gdbarch); regnum++) |
e76f1f2e | 2306 | { |
f9418c0f | 2307 | if (gdbarch_register_reggroup_p (gdbarch, regnum, vector_reggroup)) |
e76f1f2e AC |
2308 | { |
2309 | printed_something = 1; | |
e76f1f2e | 2310 | gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1); |
e76f1f2e AC |
2311 | } |
2312 | } | |
2313 | if (!printed_something) | |
2314 | fprintf_filtered (file, "No vector information\n"); | |
2315 | } | |
2316 | } | |
2317 | ||
2318 | static void | |
1d12d88f | 2319 | info_vector_command (const char *args, int from_tty) |
e76f1f2e | 2320 | { |
9dccd06e | 2321 | if (!target_has_registers ()) |
206415a3 DJ |
2322 | error (_("The program has no registers now.")); |
2323 | ||
d80b854b | 2324 | print_vector_info (gdb_stdout, get_selected_frame (NULL), args); |
e76f1f2e | 2325 | } |
c906108c | 2326 | \f |
5fd62852 PA |
2327 | /* Kill the inferior process. Make us have no inferior. */ |
2328 | ||
2329 | static void | |
981a3fb3 | 2330 | kill_command (const char *arg, int from_tty) |
5fd62852 PA |
2331 | { |
2332 | /* FIXME: This should not really be inferior_ptid (or target_has_execution). | |
2333 | It should be a distinct flag that indicates that a target is active, cuz | |
1777feb0 | 2334 | some targets don't have processes! */ |
5fd62852 | 2335 | |
d7e15655 | 2336 | if (inferior_ptid == null_ptid) |
5fd62852 PA |
2337 | error (_("The program is not being run.")); |
2338 | if (!query (_("Kill the program being debugged? "))) | |
2339 | error (_("Not confirmed.")); | |
f67c0c91 | 2340 | |
249b5733 PA |
2341 | int pid = current_inferior ()->pid; |
2342 | /* Save the pid as a string before killing the inferior, since that | |
2343 | may unpush the current target, and we need the string after. */ | |
f2907e49 | 2344 | std::string pid_str = target_pid_to_str (ptid_t (pid)); |
f67c0c91 SDJ |
2345 | int infnum = current_inferior ()->num; |
2346 | ||
5fd62852 PA |
2347 | target_kill (); |
2348 | ||
f67c0c91 | 2349 | if (print_inferior_events) |
249b5733 | 2350 | printf_unfiltered (_("[Inferior %d (%s) killed]\n"), |
f67c0c91 SDJ |
2351 | infnum, pid_str.c_str ()); |
2352 | ||
5fd62852 PA |
2353 | bfd_cache_close_all (); |
2354 | } | |
c5aa993b | 2355 | |
08036331 | 2356 | /* Used in `attach&' command. Proceed threads of inferior INF iff |
74531fed | 2357 | they stopped due to debugger request, and when they did, they |
08036331 PA |
2358 | reported a clean stop (GDB_SIGNAL_0). Do not proceed threads that |
2359 | have been explicitly been told to stop. */ | |
74531fed PA |
2360 | |
2361 | static void | |
08036331 | 2362 | proceed_after_attach (inferior *inf) |
74531fed PA |
2363 | { |
2364 | /* Don't error out if the current thread is running, because | |
2365 | there may be other stopped threads. */ | |
74531fed PA |
2366 | |
2367 | /* Backup current thread and selected frame. */ | |
5ed8105e | 2368 | scoped_restore_current_thread restore_thread; |
74531fed | 2369 | |
08036331 | 2370 | for (thread_info *thread : inf->non_exited_threads ()) |
611841bb | 2371 | if (!thread->executing () |
08036331 | 2372 | && !thread->stop_requested |
1edb66d8 | 2373 | && thread->stop_signal () == GDB_SIGNAL_0) |
08036331 PA |
2374 | { |
2375 | switch_to_thread (thread); | |
2376 | clear_proceed_status (0); | |
2377 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); | |
2378 | } | |
74531fed PA |
2379 | } |
2380 | ||
6efcd9a8 | 2381 | /* See inferior.h. */ |
c906108c | 2382 | |
6efcd9a8 PA |
2383 | void |
2384 | setup_inferior (int from_tty) | |
9356cf8d | 2385 | { |
d6b48e9c | 2386 | struct inferior *inferior; |
9356cf8d | 2387 | |
d6b48e9c | 2388 | inferior = current_inferior (); |
6efcd9a8 | 2389 | inferior->needs_setup = 0; |
9356cf8d PA |
2390 | |
2391 | /* If no exec file is yet known, try to determine it from the | |
2392 | process itself. */ | |
a10de604 | 2393 | if (get_exec_file (0) == NULL) |
e99b03dc | 2394 | exec_file_locate_attach (inferior_ptid.pid (), 1, from_tty); |
9356cf8d PA |
2395 | else |
2396 | { | |
2397 | reopen_exec_file (); | |
2398 | reread_symbols (); | |
2399 | } | |
2400 | ||
2401 | /* Take any necessary post-attaching actions for this platform. */ | |
e99b03dc | 2402 | target_post_attach (inferior_ptid.pid ()); |
9356cf8d | 2403 | |
a7aba266 | 2404 | post_create_inferior (from_tty); |
6efcd9a8 PA |
2405 | } |
2406 | ||
2407 | /* What to do after the first program stops after attaching. */ | |
2408 | enum attach_post_wait_mode | |
2409 | { | |
2410 | /* Do nothing. Leaves threads as they are. */ | |
2411 | ATTACH_POST_WAIT_NOTHING, | |
2412 | ||
2413 | /* Re-resume threads that are marked running. */ | |
2414 | ATTACH_POST_WAIT_RESUME, | |
2415 | ||
2416 | /* Stop all threads. */ | |
2417 | ATTACH_POST_WAIT_STOP, | |
2418 | }; | |
2419 | ||
2420 | /* Called after we've attached to a process and we've seen it stop for | |
6fee5eee TBA |
2421 | the first time. Resume, stop, or don't touch the threads according |
2422 | to MODE. */ | |
6efcd9a8 PA |
2423 | |
2424 | static void | |
27d0790a | 2425 | attach_post_wait (int from_tty, enum attach_post_wait_mode mode) |
6efcd9a8 PA |
2426 | { |
2427 | struct inferior *inferior; | |
9356cf8d | 2428 | |
6efcd9a8 PA |
2429 | inferior = current_inferior (); |
2430 | inferior->control.stop_soon = NO_STOP_QUIETLY; | |
2431 | ||
2432 | if (inferior->needs_setup) | |
2433 | setup_inferior (from_tty); | |
2434 | ||
2435 | if (mode == ATTACH_POST_WAIT_RESUME) | |
74531fed PA |
2436 | { |
2437 | /* The user requested an `attach&', so be sure to leave threads | |
2438 | that didn't get a signal running. */ | |
2439 | ||
6fee5eee | 2440 | /* Immediately resume all suspended threads of this inferior, |
74531fed PA |
2441 | and this inferior only. This should have no effect on |
2442 | already running threads. If a thread has been stopped with a | |
2443 | signal, leave it be. */ | |
2444 | if (non_stop) | |
08036331 | 2445 | proceed_after_attach (inferior); |
74531fed PA |
2446 | else |
2447 | { | |
1edb66d8 | 2448 | if (inferior_thread ()->stop_signal () == GDB_SIGNAL_0) |
74531fed | 2449 | { |
70509625 | 2450 | clear_proceed_status (0); |
64ce06e4 | 2451 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
74531fed PA |
2452 | } |
2453 | } | |
2454 | } | |
6efcd9a8 | 2455 | else if (mode == ATTACH_POST_WAIT_STOP) |
9356cf8d | 2456 | { |
74531fed PA |
2457 | /* The user requested a plain `attach', so be sure to leave |
2458 | the inferior stopped. */ | |
2459 | ||
74531fed PA |
2460 | /* At least the current thread is already stopped. */ |
2461 | ||
2462 | /* In all-stop, by definition, all threads have to be already | |
2463 | stopped at this point. In non-stop, however, although the | |
2464 | selected thread is stopped, others may still be executing. | |
2465 | Be sure to explicitly stop all threads of the process. This | |
2466 | should have no effect on already stopped threads. */ | |
066f6b6e | 2467 | if (non_stop) |
f2907e49 | 2468 | target_stop (ptid_t (inferior->pid)); |
066f6b6e PA |
2469 | else if (target_is_non_stop_p ()) |
2470 | { | |
066f6b6e | 2471 | struct thread_info *lowest = inferior_thread (); |
066f6b6e PA |
2472 | |
2473 | stop_all_threads (); | |
2474 | ||
2475 | /* It's not defined which thread will report the attach | |
2476 | stop. For consistency, always select the thread with | |
2477 | lowest GDB number, which should be the main thread, if it | |
2478 | still exists. */ | |
08036331 PA |
2479 | for (thread_info *thread : current_inferior ()->non_exited_threads ()) |
2480 | if (thread->inf->num < lowest->inf->num | |
2481 | || thread->per_inf_num < lowest->per_inf_num) | |
2482 | lowest = thread; | |
066f6b6e | 2483 | |
00431a78 | 2484 | switch_to_thread (lowest); |
066f6b6e | 2485 | } |
74531fed PA |
2486 | |
2487 | /* Tell the user/frontend where we're stopped. */ | |
9356cf8d PA |
2488 | normal_stop (); |
2489 | if (deprecated_attach_hook) | |
2490 | deprecated_attach_hook (); | |
2491 | } | |
2492 | } | |
2493 | ||
6efcd9a8 PA |
2494 | /* "attach" command entry point. Takes a program started up outside |
2495 | of gdb and ``attaches'' to it. This stops it cold in its tracks | |
2496 | and allows us to start debugging it. */ | |
2497 | ||
c906108c | 2498 | void |
0b39b52e | 2499 | attach_command (const char *args, int from_tty) |
c906108c | 2500 | { |
6c4486e6 | 2501 | int async_exec; |
b3ccfe11 | 2502 | struct target_ops *attach_target; |
6efcd9a8 PA |
2503 | struct inferior *inferior = current_inferior (); |
2504 | enum attach_post_wait_mode mode; | |
c906108c | 2505 | |
c5aa993b | 2506 | dont_repeat (); /* Not for the faint of heart */ |
c906108c | 2507 | |
1192f124 SM |
2508 | scoped_disable_commit_resumed disable_commit_resumed ("attaching"); |
2509 | ||
f5656ead | 2510 | if (gdbarch_has_global_solist (target_gdbarch ())) |
2567c7d9 PA |
2511 | /* Don't complain if all processes share the same symbol |
2512 | space. */ | |
8a305172 | 2513 | ; |
55f6301a | 2514 | else if (target_has_execution ()) |
c906108c | 2515 | { |
9e2f0ad4 | 2516 | if (query (_("A program is being debugged already. Kill it? "))) |
c906108c SS |
2517 | target_kill (); |
2518 | else | |
8a3fe4f8 | 2519 | error (_("Not killed.")); |
c906108c SS |
2520 | } |
2521 | ||
fd79ecee DJ |
2522 | /* Clean up any leftovers from other runs. Some other things from |
2523 | this function should probably be moved into target_pre_inferior. */ | |
2524 | target_pre_inferior (from_tty); | |
2525 | ||
6be9a197 TT |
2526 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (args, &async_exec); |
2527 | args = stripped.get (); | |
8bc2fe48 | 2528 | |
b3ccfe11 TT |
2529 | attach_target = find_attach_target (); |
2530 | ||
8bc2fe48 PA |
2531 | prepare_execution_command (attach_target, async_exec); |
2532 | ||
f6ac5f3d | 2533 | if (non_stop && !attach_target->supports_non_stop ()) |
9908b566 VP |
2534 | error (_("Cannot attach to this target in non-stop mode")); |
2535 | ||
f6ac5f3d | 2536 | attach_target->attach (args, from_tty); |
b3ccfe11 TT |
2537 | /* to_attach should push the target, so after this point we |
2538 | shouldn't refer to attach_target again. */ | |
2539 | attach_target = NULL; | |
c906108c SS |
2540 | |
2541 | /* Set up the "saved terminal modes" of the inferior | |
2542 | based on what modes we are starting it with. */ | |
223ffa71 | 2543 | target_terminal::init (); |
c906108c | 2544 | |
7180e04a PA |
2545 | /* Install inferior's terminal modes. This may look like a no-op, |
2546 | as we've just saved them above, however, this does more than | |
2547 | restore terminal settings: | |
2548 | ||
2549 | - installs a SIGINT handler that forwards SIGINT to the inferior. | |
2550 | Otherwise a Ctrl-C pressed just while waiting for the initial | |
2551 | stop would end up as a spurious Quit. | |
2552 | ||
2553 | - removes stdin from the event loop, which we need if attaching | |
2554 | in the foreground, otherwise on targets that report an initial | |
2555 | stop on attach (which are most) we'd process input/commands | |
2556 | while we're in the event loop waiting for that stop. That is, | |
2557 | before the attach continuation runs and the command is really | |
2558 | finished. */ | |
223ffa71 | 2559 | target_terminal::inferior (); |
7180e04a | 2560 | |
c906108c SS |
2561 | /* Set up execution context to know that we should return from |
2562 | wait_for_inferior as soon as the target reports a stop. */ | |
2563 | init_wait_for_inferior (); | |
c906108c | 2564 | |
6efcd9a8 PA |
2565 | inferior->needs_setup = 1; |
2566 | ||
fbea99ea | 2567 | if (target_is_non_stop_p ()) |
74531fed PA |
2568 | { |
2569 | /* If we find that the current thread isn't stopped, explicitly | |
2570 | do so now, because we're going to install breakpoints and | |
2571 | poke at memory. */ | |
2572 | ||
2573 | if (async_exec) | |
2574 | /* The user requested an `attach&'; stop just one thread. */ | |
2575 | target_stop (inferior_ptid); | |
2576 | else | |
2577 | /* The user requested an `attach', so stop all threads of this | |
2578 | inferior. */ | |
e99b03dc | 2579 | target_stop (ptid_t (inferior_ptid.pid ())); |
74531fed PA |
2580 | } |
2581 | ||
a2fedca9 PW |
2582 | /* Check for exec file mismatch, and let the user solve it. */ |
2583 | validate_exec_file (from_tty); | |
2584 | ||
6efcd9a8 PA |
2585 | mode = async_exec ? ATTACH_POST_WAIT_RESUME : ATTACH_POST_WAIT_STOP; |
2586 | ||
dc177b7a PA |
2587 | /* Some system don't generate traps when attaching to inferior. |
2588 | E.g. Mach 3 or GNU hurd. */ | |
f6ac5f3d | 2589 | if (!target_attach_no_wait ()) |
c5aa993b | 2590 | { |
1777feb0 | 2591 | /* Careful here. See comments in inferior.h. Basically some |
dc177b7a PA |
2592 | OSes don't ignore SIGSTOPs on continue requests anymore. We |
2593 | need a way for handle_inferior_event to reset the stop_signal | |
2594 | variable after an attach, and this is what | |
2595 | STOP_QUIETLY_NO_SIGSTOP is for. */ | |
16c381f0 | 2596 | inferior->control.stop_soon = STOP_QUIETLY_NO_SIGSTOP; |
c5aa993b | 2597 | |
3b12939d | 2598 | /* Wait for stop. */ |
4efeb0d3 | 2599 | inferior->add_continuation ([=] () |
c4c493de TBA |
2600 | { |
2601 | attach_post_wait (from_tty, mode); | |
2602 | }); | |
0b333c5e | 2603 | |
5b6d1e4f PA |
2604 | /* Let infrun consider waiting for events out of this |
2605 | target. */ | |
2606 | inferior->process_target ()->threads_executing = true; | |
2607 | ||
0b333c5e PA |
2608 | if (!target_is_async_p ()) |
2609 | mark_infrun_async_event_handler (); | |
2610 | return; | |
dc177b7a | 2611 | } |
5b6d1e4f | 2612 | else |
27d0790a | 2613 | attach_post_wait (from_tty, mode); |
1192f124 SM |
2614 | |
2615 | disable_commit_resumed.reset_and_commit (); | |
c906108c SS |
2616 | } |
2617 | ||
1941c569 PA |
2618 | /* We had just found out that the target was already attached to an |
2619 | inferior. PTID points at a thread of this new inferior, that is | |
2620 | the most likely to be stopped right now, but not necessarily so. | |
2621 | The new inferior is assumed to be already added to the inferior | |
2622 | list at this point. If LEAVE_RUNNING, then leave the threads of | |
2623 | this inferior running, except those we've explicitly seen reported | |
2624 | as stopped. */ | |
2625 | ||
2626 | void | |
8a82de58 | 2627 | notice_new_inferior (thread_info *thr, bool leave_running, int from_tty) |
1941c569 | 2628 | { |
5ed8105e PA |
2629 | enum attach_post_wait_mode mode |
2630 | = leave_running ? ATTACH_POST_WAIT_RESUME : ATTACH_POST_WAIT_NOTHING; | |
1941c569 | 2631 | |
5ed8105e | 2632 | gdb::optional<scoped_restore_current_thread> restore_thread; |
1941c569 | 2633 | |
5ed8105e PA |
2634 | if (inferior_ptid != null_ptid) |
2635 | restore_thread.emplace (); | |
1941c569 | 2636 | |
6efcd9a8 PA |
2637 | /* Avoid reading registers -- we haven't fetched the target |
2638 | description yet. */ | |
00431a78 | 2639 | switch_to_thread_no_regs (thr); |
1941c569 PA |
2640 | |
2641 | /* When we "notice" a new inferior we need to do all the things we | |
2642 | would normally do if we had just attached to it. */ | |
2643 | ||
611841bb | 2644 | if (thr->executing ()) |
1941c569 PA |
2645 | { |
2646 | struct inferior *inferior = current_inferior (); | |
2647 | ||
2648 | /* We're going to install breakpoints, and poke at memory, | |
2649 | ensure that the inferior is stopped for a moment while we do | |
2650 | that. */ | |
2651 | target_stop (inferior_ptid); | |
2652 | ||
16c381f0 | 2653 | inferior->control.stop_soon = STOP_QUIETLY_REMOTE; |
1941c569 PA |
2654 | |
2655 | /* Wait for stop before proceeding. */ | |
4efeb0d3 | 2656 | inferior->add_continuation ([=] () |
c4c493de TBA |
2657 | { |
2658 | attach_post_wait (from_tty, mode); | |
2659 | }); | |
1941c569 | 2660 | |
0b333c5e | 2661 | return; |
1941c569 PA |
2662 | } |
2663 | ||
27d0790a | 2664 | attach_post_wait (from_tty, mode); |
1941c569 PA |
2665 | } |
2666 | ||
c906108c SS |
2667 | /* |
2668 | * detach_command -- | |
2669 | * takes a program previously attached to and detaches it. | |
2670 | * The program resumes execution and will no longer stop | |
2671 | * on signals, etc. We better not have left any breakpoints | |
2672 | * in the program or it'll die when it hits one. For this | |
2673 | * to work, it may be necessary for the process to have been | |
2674 | * previously attached. It *might* work if the program was | |
2675 | * started via the normal ptrace (PTRACE_TRACEME). | |
2676 | */ | |
2677 | ||
6418d433 | 2678 | void |
981a3fb3 | 2679 | detach_command (const char *args, int from_tty) |
c906108c | 2680 | { |
1f5d0fc9 | 2681 | dont_repeat (); /* Not for the faint of heart. */ |
d729566a | 2682 | |
d7e15655 | 2683 | if (inferior_ptid == null_ptid) |
d729566a PA |
2684 | error (_("The program is not being run.")); |
2685 | ||
1192f124 SM |
2686 | scoped_disable_commit_resumed disable_commit_resumed ("detaching"); |
2687 | ||
2f9d54cf PA |
2688 | query_if_trace_running (from_tty); |
2689 | ||
2690 | disconnect_tracing (); | |
d5551862 | 2691 | |
408f6686 PA |
2692 | /* Hold a strong reference to the target while (maybe) |
2693 | detaching the parent. Otherwise detaching could close the | |
2694 | target. */ | |
2695 | auto target_ref | |
2696 | = target_ops_ref::new_reference (current_inferior ()->process_target ()); | |
2697 | ||
2698 | /* Save this before detaching, since detaching may unpush the | |
2699 | process_stratum target. */ | |
2700 | bool was_non_stop_p = target_is_non_stop_p (); | |
2701 | ||
6e1e1966 | 2702 | target_detach (current_inferior (), from_tty); |
50c71eaf | 2703 | |
63000888 PA |
2704 | /* The current inferior process was just detached successfully. Get |
2705 | rid of breakpoints that no longer make sense. Note we don't do | |
2706 | this within target_detach because that is also used when | |
2707 | following child forks, and in that case we will want to transfer | |
2708 | breakpoints to the child, not delete them. */ | |
2709 | breakpoint_init_inferior (inf_exited); | |
2710 | ||
50c71eaf PA |
2711 | /* If the solist is global across inferiors, don't clear it when we |
2712 | detach from a single inferior. */ | |
f5656ead | 2713 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
50c71eaf | 2714 | no_shared_libraries (NULL, from_tty); |
8a305172 | 2715 | |
9a4105ab AC |
2716 | if (deprecated_detach_hook) |
2717 | deprecated_detach_hook (); | |
408f6686 PA |
2718 | |
2719 | if (!was_non_stop_p) | |
2720 | restart_after_all_stop_detach (as_process_stratum_target (target_ref.get ())); | |
1192f124 SM |
2721 | |
2722 | disable_commit_resumed.reset_and_commit (); | |
c906108c SS |
2723 | } |
2724 | ||
6ad8ae5c DJ |
2725 | /* Disconnect from the current target without resuming it (leaving it |
2726 | waiting for a debugger). | |
2727 | ||
2728 | We'd better not have left any breakpoints in the program or the | |
2729 | next debugger will get confused. Currently only supported for some | |
2730 | remote targets, since the normal attach mechanisms don't work on | |
2731 | stopped processes on some native platforms (e.g. GNU/Linux). */ | |
2732 | ||
2733 | static void | |
0b39b52e | 2734 | disconnect_command (const char *args, int from_tty) |
6ad8ae5c | 2735 | { |
1777feb0 | 2736 | dont_repeat (); /* Not for the faint of heart. */ |
2f9d54cf PA |
2737 | query_if_trace_running (from_tty); |
2738 | disconnect_tracing (); | |
6ad8ae5c | 2739 | target_disconnect (args, from_tty); |
e85a822c | 2740 | no_shared_libraries (NULL, from_tty); |
a0ef4274 | 2741 | init_thread_list (); |
9a4105ab AC |
2742 | if (deprecated_detach_hook) |
2743 | deprecated_detach_hook (); | |
6ad8ae5c DJ |
2744 | } |
2745 | ||
5b6d1e4f PA |
2746 | /* Stop PTID in the current target, and tag the PTID threads as having |
2747 | been explicitly requested to stop. PTID can be a thread, a | |
2748 | process, or minus_one_ptid, meaning all threads of all inferiors of | |
2749 | the current target. */ | |
e42de8c7 | 2750 | |
5b6d1e4f PA |
2751 | static void |
2752 | stop_current_target_threads_ns (ptid_t ptid) | |
2753 | { | |
2754 | target_stop (ptid); | |
252fbfc8 PA |
2755 | |
2756 | /* Tag the thread as having been explicitly requested to stop, so | |
2757 | other parts of gdb know not to resume this thread automatically, | |
2758 | if it was stopped due to an internal event. Limit this to | |
2759 | non-stop mode, as when debugging a multi-threaded application in | |
2760 | all-stop mode, we will only get one stop event --- it's undefined | |
2761 | which thread will report the event. */ | |
5b6d1e4f PA |
2762 | set_stop_requested (current_inferior ()->process_target (), |
2763 | ptid, 1); | |
2764 | } | |
2765 | ||
2766 | /* See inferior.h. */ | |
2767 | ||
2768 | void | |
2769 | interrupt_target_1 (bool all_threads) | |
2770 | { | |
1192f124 SM |
2771 | scoped_disable_commit_resumed disable_commit_resumed ("interrupting"); |
2772 | ||
252fbfc8 | 2773 | if (non_stop) |
5b6d1e4f PA |
2774 | { |
2775 | if (all_threads) | |
2776 | { | |
2777 | scoped_restore_current_thread restore_thread; | |
2778 | ||
2779 | for (inferior *inf : all_inferiors ()) | |
2780 | { | |
2781 | switch_to_inferior_no_thread (inf); | |
2782 | stop_current_target_threads_ns (minus_one_ptid); | |
2783 | } | |
2784 | } | |
2785 | else | |
2786 | stop_current_target_threads_ns (inferior_ptid); | |
2787 | } | |
2788 | else | |
2789 | target_interrupt (); | |
1192f124 SM |
2790 | |
2791 | disable_commit_resumed.reset_and_commit (); | |
77ebaa5a VP |
2792 | } |
2793 | ||
6339bfc4 DE |
2794 | /* interrupt [-a] |
2795 | Stop the execution of the target while running in async mode, in | |
17e5269b | 2796 | the background. In all-stop, stop the whole process. In non-stop |
8cae4b3f PA |
2797 | mode, stop the current thread only by default, or stop all threads |
2798 | if the `-a' switch is used. */ | |
2799 | ||
1dd5fedc | 2800 | static void |
0b39b52e | 2801 | interrupt_command (const char *args, int from_tty) |
43ff13b4 | 2802 | { |
362646f5 | 2803 | if (target_can_async_p ()) |
43ff13b4 | 2804 | { |
8cae4b3f PA |
2805 | int all_threads = 0; |
2806 | ||
1777feb0 | 2807 | dont_repeat (); /* Not for the faint of heart. */ |
94cc34af | 2808 | |
8cae4b3f | 2809 | if (args != NULL |
61012eef | 2810 | && startswith (args, "-a")) |
8cae4b3f PA |
2811 | all_threads = 1; |
2812 | ||
2813 | if (!non_stop && all_threads) | |
2814 | error (_("-a is meaningless in all-stop mode.")); | |
2815 | ||
77ebaa5a | 2816 | interrupt_target_1 (all_threads); |
43ff13b4 JM |
2817 | } |
2818 | } | |
2819 | ||
cc86d1cb YQ |
2820 | /* See inferior.h. */ |
2821 | ||
2822 | void | |
2823 | default_print_float_info (struct gdbarch *gdbarch, struct ui_file *file, | |
2824 | struct frame_info *frame, const char *args) | |
c906108c | 2825 | { |
cc86d1cb YQ |
2826 | int regnum; |
2827 | int printed_something = 0; | |
d80b854b | 2828 | |
f6efe3f8 | 2829 | for (regnum = 0; regnum < gdbarch_num_cooked_regs (gdbarch); regnum++) |
23e3a7ac | 2830 | { |
cc86d1cb | 2831 | if (gdbarch_register_reggroup_p (gdbarch, regnum, float_reggroup)) |
23e3a7ac | 2832 | { |
cc86d1cb YQ |
2833 | printed_something = 1; |
2834 | gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1); | |
23e3a7ac | 2835 | } |
23e3a7ac | 2836 | } |
cc86d1cb YQ |
2837 | if (!printed_something) |
2838 | fprintf_filtered (file, "No floating-point info " | |
2839 | "available for this processor.\n"); | |
23e3a7ac AC |
2840 | } |
2841 | ||
2842 | static void | |
1d12d88f | 2843 | info_float_command (const char *args, int from_tty) |
23e3a7ac | 2844 | { |
cc86d1cb YQ |
2845 | struct frame_info *frame; |
2846 | ||
9dccd06e | 2847 | if (!target_has_registers ()) |
206415a3 DJ |
2848 | error (_("The program has no registers now.")); |
2849 | ||
cc86d1cb YQ |
2850 | frame = get_selected_frame (NULL); |
2851 | gdbarch_print_float_info (get_frame_arch (frame), gdb_stdout, frame, args); | |
c906108c SS |
2852 | } |
2853 | \f | |
145b16a9 UW |
2854 | /* Implement `info proc' family of commands. */ |
2855 | ||
2856 | static void | |
69f476a3 | 2857 | info_proc_cmd_1 (const char *args, enum info_proc_what what, int from_tty) |
145b16a9 | 2858 | { |
3030c96e UW |
2859 | struct gdbarch *gdbarch = get_current_arch (); |
2860 | ||
451b7c33 TT |
2861 | if (!target_info_proc (args, what)) |
2862 | { | |
2863 | if (gdbarch_info_proc_p (gdbarch)) | |
2864 | gdbarch_info_proc (gdbarch, args, what); | |
2865 | else | |
2866 | error (_("Not supported on this target.")); | |
2867 | } | |
145b16a9 UW |
2868 | } |
2869 | ||
85102364 | 2870 | /* Implement `info proc' when given without any further parameters. */ |
145b16a9 UW |
2871 | |
2872 | static void | |
981a3fb3 | 2873 | info_proc_cmd (const char *args, int from_tty) |
145b16a9 UW |
2874 | { |
2875 | info_proc_cmd_1 (args, IP_MINIMAL, from_tty); | |
2876 | } | |
2877 | ||
2878 | /* Implement `info proc mappings'. */ | |
2879 | ||
2880 | static void | |
69f476a3 | 2881 | info_proc_cmd_mappings (const char *args, int from_tty) |
145b16a9 UW |
2882 | { |
2883 | info_proc_cmd_1 (args, IP_MAPPINGS, from_tty); | |
2884 | } | |
2885 | ||
2886 | /* Implement `info proc stat'. */ | |
2887 | ||
2888 | static void | |
69f476a3 | 2889 | info_proc_cmd_stat (const char *args, int from_tty) |
145b16a9 UW |
2890 | { |
2891 | info_proc_cmd_1 (args, IP_STAT, from_tty); | |
2892 | } | |
2893 | ||
2894 | /* Implement `info proc status'. */ | |
2895 | ||
2896 | static void | |
69f476a3 | 2897 | info_proc_cmd_status (const char *args, int from_tty) |
145b16a9 UW |
2898 | { |
2899 | info_proc_cmd_1 (args, IP_STATUS, from_tty); | |
2900 | } | |
2901 | ||
2902 | /* Implement `info proc cwd'. */ | |
2903 | ||
2904 | static void | |
69f476a3 | 2905 | info_proc_cmd_cwd (const char *args, int from_tty) |
145b16a9 UW |
2906 | { |
2907 | info_proc_cmd_1 (args, IP_CWD, from_tty); | |
2908 | } | |
2909 | ||
2910 | /* Implement `info proc cmdline'. */ | |
2911 | ||
2912 | static void | |
69f476a3 | 2913 | info_proc_cmd_cmdline (const char *args, int from_tty) |
145b16a9 UW |
2914 | { |
2915 | info_proc_cmd_1 (args, IP_CMDLINE, from_tty); | |
2916 | } | |
2917 | ||
2918 | /* Implement `info proc exe'. */ | |
2919 | ||
2920 | static void | |
69f476a3 | 2921 | info_proc_cmd_exe (const char *args, int from_tty) |
145b16a9 UW |
2922 | { |
2923 | info_proc_cmd_1 (args, IP_EXE, from_tty); | |
2924 | } | |
2925 | ||
e98ee8c4 JB |
2926 | /* Implement `info proc files'. */ |
2927 | ||
2928 | static void | |
2929 | info_proc_cmd_files (const char *args, int from_tty) | |
2930 | { | |
2931 | info_proc_cmd_1 (args, IP_FILES, from_tty); | |
2932 | } | |
2933 | ||
145b16a9 UW |
2934 | /* Implement `info proc all'. */ |
2935 | ||
2936 | static void | |
69f476a3 | 2937 | info_proc_cmd_all (const char *args, int from_tty) |
145b16a9 UW |
2938 | { |
2939 | info_proc_cmd_1 (args, IP_ALL, from_tty); | |
2940 | } | |
2941 | ||
000439d5 TT |
2942 | /* Implement `show print finish'. */ |
2943 | ||
2944 | static void | |
2945 | show_print_finish (struct ui_file *file, int from_tty, | |
2946 | struct cmd_list_element *c, | |
2947 | const char *value) | |
2948 | { | |
2949 | fprintf_filtered (file, _("\ | |
2950 | Printing of return value after `finish' is %s.\n"), | |
2951 | value); | |
2952 | } | |
2953 | ||
2954 | ||
4e5a4f58 JB |
2955 | /* This help string is used for the run, start, and starti commands. |
2956 | It is defined as a macro to prevent duplication. */ | |
2957 | ||
2958 | #define RUN_ARGS_HELP \ | |
2959 | "You may specify arguments to give it.\n\ | |
2960 | Args may include \"*\", or \"[...]\"; they are expanded using the\n\ | |
2961 | shell that will start the program (specified by the \"$SHELL\" environment\n\ | |
2962 | variable). Input and output redirection with \">\", \"<\", or \">>\"\n\ | |
2963 | are also allowed.\n\ | |
2964 | \n\ | |
2965 | With no arguments, uses arguments last specified (with \"run\" or \n\ | |
2966 | \"set args\"). To cancel previous arguments and run with no arguments,\n\ | |
2967 | use \"set args\" without arguments.\n\ | |
2968 | \n\ | |
2969 | To start the inferior without using a shell, use \"set startup-with-shell off\"." | |
2970 | ||
6c265988 | 2971 | void _initialize_infcmd (); |
c906108c | 2972 | void |
6c265988 | 2973 | _initialize_infcmd () |
c906108c | 2974 | { |
145b16a9 | 2975 | static struct cmd_list_element *info_proc_cmdlist; |
3cb3b8df | 2976 | struct cmd_list_element *c = NULL; |
6f937416 | 2977 | const char *cmd_name; |
3cb3b8df | 2978 | |
1777feb0 | 2979 | /* Add the filename of the terminal connected to inferior I/O. */ |
0a1ddfa6 SM |
2980 | add_setshow_optional_filename_cmd ("inferior-tty", class_run, |
2981 | &inferior_io_terminal_scratch, _("\ | |
3cb3b8df BR |
2982 | Set terminal for future runs of program being debugged."), _("\ |
2983 | Show terminal for future runs of program being debugged."), _("\ | |
0a1ddfa6 SM |
2984 | Usage: set inferior-tty [TTY]\n\n\ |
2985 | If TTY is omitted, the default behavior of using the same terminal as GDB\n\ | |
2986 | is restored."), | |
2987 | set_inferior_tty_command, | |
2988 | show_inferior_tty_command, | |
2989 | &setlist, &showlist); | |
21873064 | 2990 | cmd_name = "inferior-tty"; |
cf00cd6f | 2991 | c = lookup_cmd (&cmd_name, setlist, "", NULL, -1, 1); |
21873064 | 2992 | gdb_assert (c != NULL); |
57b4f16e | 2993 | add_alias_cmd ("tty", c, class_run, 0, &cmdlist); |
c906108c | 2994 | |
6ace3df1 YQ |
2995 | cmd_name = "args"; |
2996 | add_setshow_string_noescape_cmd (cmd_name, class_run, | |
2997 | &inferior_args_scratch, _("\ | |
b4b4ac0b AC |
2998 | Set argument list to give program being debugged when it is started."), _("\ |
2999 | Show argument list to give program being debugged when it is started."), _("\ | |
3000 | Follow this command with any number of args, to be passed to the program."), | |
6ace3df1 YQ |
3001 | set_args_command, |
3002 | show_args_command, | |
3003 | &setlist, &showlist); | |
cf00cd6f | 3004 | c = lookup_cmd (&cmd_name, setlist, "", NULL, -1, 1); |
6ace3df1 YQ |
3005 | gdb_assert (c != NULL); |
3006 | set_cmd_completer (c, filename_completer); | |
c906108c | 3007 | |
d092c5a2 SDJ |
3008 | cmd_name = "cwd"; |
3009 | add_setshow_string_noescape_cmd (cmd_name, class_run, | |
3010 | &inferior_cwd_scratch, _("\ | |
3011 | Set the current working directory to be used when the inferior is started.\n\ | |
3012 | Changing this setting does not have any effect on inferiors that are\n\ | |
3013 | already running."), | |
3014 | _("\ | |
3015 | Show the current working directory that is used when the inferior is started."), | |
3016 | _("\ | |
3017 | Use this command to change the current working directory that will be used\n\ | |
3018 | when the inferior is started. This setting does not affect GDB's current\n\ | |
3019 | working directory."), | |
3020 | set_cwd_command, | |
3021 | show_cwd_command, | |
3022 | &setlist, &showlist); | |
cf00cd6f | 3023 | c = lookup_cmd (&cmd_name, setlist, "", NULL, -1, 1); |
d092c5a2 SDJ |
3024 | gdb_assert (c != NULL); |
3025 | set_cmd_completer (c, filename_completer); | |
3026 | ||
1a966eab AC |
3027 | c = add_cmd ("environment", no_class, environment_info, _("\ |
3028 | The environment to give the program, or one variable's value.\n\ | |
c906108c SS |
3029 | With an argument VAR, prints the value of environment variable VAR to\n\ |
3030 | give the program being debugged. With no arguments, prints the entire\n\ | |
1a966eab | 3031 | environment to be given to the program."), &showlist); |
5ba2abeb | 3032 | set_cmd_completer (c, noop_completer); |
c906108c | 3033 | |
0743fc83 TT |
3034 | add_basic_prefix_cmd ("unset", no_class, |
3035 | _("Complement to certain \"set\" commands."), | |
2f822da5 | 3036 | &unsetlist, 0, &cmdlist); |
c5aa993b | 3037 | |
1a966eab AC |
3038 | c = add_cmd ("environment", class_run, unset_environment_command, _("\ |
3039 | Cancel environment variable VAR for the program.\n\ | |
3040 | This does not affect the program until the next \"run\" command."), | |
c5aa993b | 3041 | &unsetlist); |
5ba2abeb | 3042 | set_cmd_completer (c, noop_completer); |
c906108c | 3043 | |
1a966eab AC |
3044 | c = add_cmd ("environment", class_run, set_environment_command, _("\ |
3045 | Set environment variable value to give the program.\n\ | |
c906108c SS |
3046 | Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\ |
3047 | VALUES of environment variables are uninterpreted strings.\n\ | |
1a966eab | 3048 | This does not affect the program until the next \"run\" command."), |
c5aa993b | 3049 | &setlist); |
5ba2abeb | 3050 | set_cmd_completer (c, noop_completer); |
c5aa993b | 3051 | |
1bedd215 AC |
3052 | c = add_com ("path", class_files, path_command, _("\ |
3053 | Add directory DIR(s) to beginning of search path for object files.\n\ | |
c906108c SS |
3054 | $cwd in the path means the current working directory.\n\ |
3055 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
3056 | directories, separated by colons. These directories are searched to find\n\ | |
3e43a32a MS |
3057 | fully linked executable files and separately compiled object files as \ |
3058 | needed.")); | |
5ba2abeb | 3059 | set_cmd_completer (c, filename_completer); |
c906108c | 3060 | |
1a966eab AC |
3061 | c = add_cmd ("paths", no_class, path_info, _("\ |
3062 | Current search path for finding object files.\n\ | |
c906108c SS |
3063 | $cwd in the path means the current working directory.\n\ |
3064 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
3065 | directories, separated by colons. These directories are searched to find\n\ | |
3e43a32a MS |
3066 | fully linked executable files and separately compiled object files as \ |
3067 | needed."), | |
c906108c | 3068 | &showlist); |
5ba2abeb | 3069 | set_cmd_completer (c, noop_completer); |
c906108c | 3070 | |
2277426b PA |
3071 | add_prefix_cmd ("kill", class_run, kill_command, |
3072 | _("Kill execution of program being debugged."), | |
2f822da5 | 3073 | &killlist, 0, &cmdlist); |
5fd62852 | 3074 | |
1bedd215 AC |
3075 | add_com ("attach", class_run, attach_command, _("\ |
3076 | Attach to a process or file outside of GDB.\n\ | |
c906108c SS |
3077 | This command attaches to another target, of the same type as your last\n\ |
3078 | \"target\" command (\"info files\" will show your target stack).\n\ | |
3079 | The command may take as argument a process id or a device file.\n\ | |
3080 | For a process id, you must have permission to send the process a signal,\n\ | |
3081 | and it must have the same effective uid as the debugger.\n\ | |
3082 | When using \"attach\" with a process id, the debugger finds the\n\ | |
3083 | program running in the process, looking first in the current working\n\ | |
3084 | directory, or (if not found there) using the source file search path\n\ | |
3085 | (see the \"directory\" command). You can also use the \"file\" command\n\ | |
1bedd215 | 3086 | to specify the program, and to load its symbol table.")); |
c906108c | 3087 | |
f73adfeb | 3088 | add_prefix_cmd ("detach", class_run, detach_command, _("\ |
1bedd215 | 3089 | Detach a process or file previously attached.\n\ |
c906108c | 3090 | If a process, it is no longer traced, and it continues its execution. If\n\ |
f73adfeb | 3091 | you were debugging a file, the file is closed and gdb no longer accesses it."), |
2f822da5 | 3092 | &detachlist, 0, &cmdlist); |
c906108c | 3093 | |
1bedd215 AC |
3094 | add_com ("disconnect", class_run, disconnect_command, _("\ |
3095 | Disconnect from a target.\n\ | |
6ad8ae5c | 3096 | The target will wait for another debugger to connect. Not available for\n\ |
1bedd215 | 3097 | all targets.")); |
6ad8ae5c | 3098 | |
de0bea00 | 3099 | c = add_com ("signal", class_run, signal_command, _("\ |
486c7739 MF |
3100 | Continue program with the specified signal.\n\ |
3101 | Usage: signal SIGNAL\n\ | |
2edda2ff | 3102 | The SIGNAL argument is processed the same as the handle command.\n\ |
486c7739 MF |
3103 | \n\ |
3104 | An argument of \"0\" means continue the program without sending it a signal.\n\ | |
3105 | This is useful in cases where the program stopped because of a signal,\n\ | |
81219e53 DE |
3106 | and you want to resume the program while discarding the signal.\n\ |
3107 | \n\ | |
3108 | In a multi-threaded program the signal is delivered to, or discarded from,\n\ | |
3109 | the current thread only.")); | |
3110 | set_cmd_completer (c, signal_completer); | |
3111 | ||
3112 | c = add_com ("queue-signal", class_run, queue_signal_command, _("\ | |
3113 | Queue a signal to be delivered to the current thread when it is resumed.\n\ | |
3114 | Usage: queue-signal SIGNAL\n\ | |
3115 | The SIGNAL argument is processed the same as the handle command.\n\ | |
3116 | It is an error if the handling state of SIGNAL is \"nopass\".\n\ | |
3117 | \n\ | |
3118 | An argument of \"0\" means remove any currently queued signal from\n\ | |
3119 | the current thread. This is useful in cases where the program stopped\n\ | |
3120 | because of a signal, and you want to resume it while discarding the signal.\n\ | |
3121 | \n\ | |
3122 | In a multi-threaded program the signal is queued with, or discarded from,\n\ | |
3123 | the current thread only.")); | |
de0bea00 | 3124 | set_cmd_completer (c, signal_completer); |
c906108c | 3125 | |
3947f654 SM |
3126 | cmd_list_element *stepi_cmd |
3127 | = add_com ("stepi", class_run, stepi_command, _("\ | |
1bedd215 | 3128 | Step one instruction exactly.\n\ |
486c7739 MF |
3129 | Usage: stepi [N]\n\ |
3130 | Argument N means step N times (or till program stops for another \ | |
3e43a32a | 3131 | reason).")); |
3947f654 | 3132 | add_com_alias ("si", stepi_cmd, class_run, 0); |
c906108c | 3133 | |
3947f654 SM |
3134 | cmd_list_element *nexti_cmd |
3135 | = add_com ("nexti", class_run, nexti_command, _("\ | |
1bedd215 | 3136 | Step one instruction, but proceed through subroutine calls.\n\ |
486c7739 MF |
3137 | Usage: nexti [N]\n\ |
3138 | Argument N means step N times (or till program stops for another \ | |
3e43a32a | 3139 | reason).")); |
3947f654 | 3140 | add_com_alias ("ni", nexti_cmd, class_run, 0); |
c906108c | 3141 | |
3947f654 SM |
3142 | cmd_list_element *finish_cmd |
3143 | = add_com ("finish", class_run, finish_command, _("\ | |
1bedd215 | 3144 | Execute until selected stack frame returns.\n\ |
486c7739 | 3145 | Usage: finish\n\ |
1bedd215 | 3146 | Upon return, the value returned is printed and put in the value history.")); |
3947f654 | 3147 | add_com_alias ("fin", finish_cmd, class_run, 1); |
c906108c | 3148 | |
3947f654 SM |
3149 | cmd_list_element *next_cmd |
3150 | = add_com ("next", class_run, next_command, _("\ | |
1bedd215 | 3151 | Step program, proceeding through subroutine calls.\n\ |
486c7739 MF |
3152 | Usage: next [N]\n\ |
3153 | Unlike \"step\", if the current source line calls a subroutine,\n\ | |
3154 | this command does not enter the subroutine, but instead steps over\n\ | |
dbf6a605 | 3155 | the call, in effect treating it as a single source line.")); |
3947f654 | 3156 | add_com_alias ("n", next_cmd, class_run, 1); |
c906108c | 3157 | |
3947f654 SM |
3158 | cmd_list_element *step_cmd |
3159 | = add_com ("step", class_run, step_command, _("\ | |
1bedd215 | 3160 | Step program until it reaches a different source line.\n\ |
486c7739 MF |
3161 | Usage: step [N]\n\ |
3162 | Argument N means step N times (or till program stops for another \ | |
3e43a32a | 3163 | reason).")); |
3947f654 | 3164 | add_com_alias ("s", step_cmd, class_run, 1); |
c906108c | 3165 | |
3947f654 SM |
3166 | cmd_list_element *until_cmd |
3167 | = add_com ("until", class_run, until_command, _("\ | |
590042fc | 3168 | Execute until past the current line or past a LOCATION.\n\ |
1bedd215 | 3169 | Execute until the program reaches a source line greater than the current\n\ |
3e43a32a MS |
3170 | or a specified location (same args as break command) within the current \ |
3171 | frame.")); | |
3947f654 SM |
3172 | set_cmd_completer (until_cmd, location_completer); |
3173 | add_com_alias ("u", until_cmd, class_run, 1); | |
c5aa993b | 3174 | |
1bedd215 | 3175 | c = add_com ("advance", class_run, advance_command, _("\ |
3e43a32a MS |
3176 | Continue the program up to the given location (same form as args for break \ |
3177 | command).\n\ | |
1bedd215 | 3178 | Execution will also stop upon exit from the current stack frame.")); |
ae66c1fc EZ |
3179 | set_cmd_completer (c, location_completer); |
3180 | ||
3947f654 SM |
3181 | cmd_list_element *jump_cmd |
3182 | = add_com ("jump", class_run, jump_command, _("\ | |
1bedd215 | 3183 | Continue program being debugged at specified line or address.\n\ |
0a8ba311 | 3184 | Usage: jump LOCATION\n\ |
c906108c | 3185 | Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\ |
1bedd215 | 3186 | for an address to start at.")); |
3947f654 SM |
3187 | set_cmd_completer (jump_cmd, location_completer); |
3188 | add_com_alias ("j", jump_cmd, class_run, 1); | |
c906108c | 3189 | |
3947f654 SM |
3190 | cmd_list_element *continue_cmd |
3191 | = add_com ("continue", class_run, continue_command, _("\ | |
1bedd215 | 3192 | Continue program being debugged, after signal or breakpoint.\n\ |
486c7739 | 3193 | Usage: continue [N]\n\ |
c906108c SS |
3194 | If proceeding from breakpoint, a number N may be used as an argument,\n\ |
3195 | which means to set the ignore count of that breakpoint to N - 1 (so that\n\ | |
8cae4b3f PA |
3196 | the breakpoint won't break until the Nth time it is reached).\n\ |
3197 | \n\ | |
3198 | If non-stop mode is enabled, continue only the current thread,\n\ | |
3199 | otherwise all the threads in the program are continued. To \n\ | |
3200 | continue all stopped threads in non-stop mode, use the -a option.\n\ | |
3201 | Specifying -a and an ignore count simultaneously is an error.")); | |
3947f654 SM |
3202 | add_com_alias ("c", continue_cmd, class_run, 1); |
3203 | add_com_alias ("fg", continue_cmd, class_run, 1); | |
c906108c | 3204 | |
3947f654 SM |
3205 | cmd_list_element *run_cmd |
3206 | = add_com ("run", class_run, run_command, _("\ | |
4e5a4f58 JB |
3207 | Start debugged program.\n" |
3208 | RUN_ARGS_HELP)); | |
3947f654 SM |
3209 | set_cmd_completer (run_cmd, filename_completer); |
3210 | add_com_alias ("r", run_cmd, class_run, 1); | |
c906108c | 3211 | |
1bedd215 | 3212 | c = add_com ("start", class_run, start_command, _("\ |
4e5a4f58 JB |
3213 | Start the debugged program stopping at the beginning of the main procedure.\n" |
3214 | RUN_ARGS_HELP)); | |
3215 | set_cmd_completer (c, filename_completer); | |
3216 | ||
3217 | c = add_com ("starti", class_run, starti_command, _("\ | |
3218 | Start the debugged program stopping at the first instruction.\n" | |
3219 | RUN_ARGS_HELP)); | |
a4d5f2e0 JB |
3220 | set_cmd_completer (c, filename_completer); |
3221 | ||
0a07590b | 3222 | add_com ("interrupt", class_run, interrupt_command, |
df983543 | 3223 | _("Interrupt the execution of the debugged program.\n\ |
8cae4b3f PA |
3224 | If non-stop mode is enabled, interrupt only the current thread,\n\ |
3225 | otherwise all the threads in the program are stopped. To \n\ | |
3226 | interrupt all running threads in non-stop mode, use the -a option.")); | |
43ff13b4 | 3227 | |
e0f25bd9 SM |
3228 | cmd_list_element *info_registers_cmd |
3229 | = add_info ("registers", info_registers_command, _("\ | |
1bedd215 | 3230 | List of integer registers and their contents, for selected stack frame.\n\ |
b67d92b0 SH |
3231 | One or more register names as argument means describe the given registers.\n\ |
3232 | One or more register group names as argument means describe the registers\n\ | |
3233 | in the named register groups.")); | |
e0f25bd9 SM |
3234 | add_info_alias ("r", info_registers_cmd, 1); |
3235 | set_cmd_completer (info_registers_cmd, reg_or_group_completer); | |
c906108c | 3236 | |
11db9430 | 3237 | c = add_info ("all-registers", info_all_registers_command, _("\ |
1bedd215 | 3238 | List of all registers and their contents, for selected stack frame.\n\ |
b67d92b0 SH |
3239 | One or more register names as argument means describe the given registers.\n\ |
3240 | One or more register group names as argument means describe the registers\n\ | |
3241 | in the named register groups.")); | |
71c24708 | 3242 | set_cmd_completer (c, reg_or_group_completer); |
c906108c | 3243 | |
11db9430 | 3244 | add_info ("program", info_program_command, |
1bedd215 | 3245 | _("Execution status of the program.")); |
c906108c | 3246 | |
11db9430 | 3247 | add_info ("float", info_float_command, |
590042fc | 3248 | _("Print the status of the floating point unit.")); |
c906108c | 3249 | |
11db9430 | 3250 | add_info ("vector", info_vector_command, |
590042fc | 3251 | _("Print the status of the vector unit.")); |
145b16a9 UW |
3252 | |
3253 | add_prefix_cmd ("proc", class_info, info_proc_cmd, | |
3254 | _("\ | |
73f1bd76 | 3255 | Show additional information about a process.\n\ |
145b16a9 | 3256 | Specify any process id, or use the program being debugged by default."), |
2f822da5 | 3257 | &info_proc_cmdlist, |
145b16a9 UW |
3258 | 1/*allow-unknown*/, &infolist); |
3259 | ||
3260 | add_cmd ("mappings", class_info, info_proc_cmd_mappings, _("\ | |
73f1bd76 | 3261 | List memory regions mapped by the specified process."), |
145b16a9 UW |
3262 | &info_proc_cmdlist); |
3263 | ||
3264 | add_cmd ("stat", class_info, info_proc_cmd_stat, _("\ | |
3265 | List process info from /proc/PID/stat."), | |
3266 | &info_proc_cmdlist); | |
3267 | ||
3268 | add_cmd ("status", class_info, info_proc_cmd_status, _("\ | |
3269 | List process info from /proc/PID/status."), | |
3270 | &info_proc_cmdlist); | |
3271 | ||
3272 | add_cmd ("cwd", class_info, info_proc_cmd_cwd, _("\ | |
73f1bd76 | 3273 | List current working directory of the specified process."), |
145b16a9 UW |
3274 | &info_proc_cmdlist); |
3275 | ||
3276 | add_cmd ("cmdline", class_info, info_proc_cmd_cmdline, _("\ | |
73f1bd76 | 3277 | List command line arguments of the specified process."), |
145b16a9 UW |
3278 | &info_proc_cmdlist); |
3279 | ||
3280 | add_cmd ("exe", class_info, info_proc_cmd_exe, _("\ | |
73f1bd76 | 3281 | List absolute filename for executable of the specified process."), |
145b16a9 UW |
3282 | &info_proc_cmdlist); |
3283 | ||
e98ee8c4 JB |
3284 | add_cmd ("files", class_info, info_proc_cmd_files, _("\ |
3285 | List files opened by the specified process."), | |
3286 | &info_proc_cmdlist); | |
3287 | ||
145b16a9 | 3288 | add_cmd ("all", class_info, info_proc_cmd_all, _("\ |
73f1bd76 | 3289 | List all available info about the specified process."), |
145b16a9 | 3290 | &info_proc_cmdlist); |
000439d5 TT |
3291 | |
3292 | add_setshow_boolean_cmd ("finish", class_support, | |
3293 | &user_print_options.finish_print, _("\ | |
3294 | Set whether `finish' prints the return value."), _("\ | |
3295 | Show whether `finish' prints the return value."), NULL, | |
3296 | NULL, | |
3297 | show_print_finish, | |
3298 | &setprintlist, &showprintlist); | |
c906108c | 3299 | } |