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c906108c | 1 | /* Memory-access and commands for "inferior" process, for GDB. |
990a07ab | 2 | |
3666a048 | 3 | Copyright (C) 1986-2021 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
5af949e3 | 21 | #include "arch-utils.h" |
c906108c SS |
22 | #include "symtab.h" |
23 | #include "gdbtypes.h" | |
24 | #include "frame.h" | |
25 | #include "inferior.h" | |
45741a9c | 26 | #include "infrun.h" |
268a13a5 | 27 | #include "gdbsupport/environ.h" |
c906108c SS |
28 | #include "value.h" |
29 | #include "gdbcmd.h" | |
1adeb98a | 30 | #include "symfile.h" |
c906108c SS |
31 | #include "gdbcore.h" |
32 | #include "target.h" | |
33 | #include "language.h" | |
c906108c | 34 | #include "objfiles.h" |
c94fdfd0 | 35 | #include "completer.h" |
8b93c638 | 36 | #include "ui-out.h" |
36160dc4 | 37 | #include "regcache.h" |
f9418c0f | 38 | #include "reggroups.h" |
fe898f56 | 39 | #include "block.h" |
a77053c2 | 40 | #include "solib.h" |
f9418c0f | 41 | #include <ctype.h> |
76727919 | 42 | #include "observable.h" |
424163ea | 43 | #include "target-descriptions.h" |
ad842144 | 44 | #include "user-regs.h" |
a0ef4274 | 45 | #include "gdbthread.h" |
79a45b7d | 46 | #include "valprint.h" |
edb3359d | 47 | #include "inline-frame.h" |
573cda03 | 48 | #include "tracepoint.h" |
09cee04b | 49 | #include "inf-loop.h" |
f8eba3c6 | 50 | #include "linespec.h" |
243a9253 | 51 | #include "thread-fsm.h" |
3b12939d | 52 | #include "top.h" |
8980e177 | 53 | #include "interps.h" |
4a4c04f1 | 54 | #include "skip.h" |
268a13a5 | 55 | #include "gdbsupport/gdb_optional.h" |
b46a8d7c | 56 | #include "source.h" |
7f6aba03 | 57 | #include "cli/cli-style.h" |
d5551862 | 58 | |
a58dd373 EZ |
59 | /* Local functions: */ |
60 | ||
a14ed312 | 61 | static void until_next_command (int); |
c906108c | 62 | |
0b39b52e | 63 | static void step_1 (int, int, const char *); |
c906108c | 64 | |
c906108c | 65 | #define ERROR_NO_INFERIOR \ |
55f6301a | 66 | if (!target_has_execution ()) error (_("The program is not being run.")); |
c906108c | 67 | |
3e43a32a MS |
68 | /* Scratch area where string containing arguments to give to the |
69 | program will be stored by 'set args'. As soon as anything is | |
70 | stored, notice_args_set will move it into per-inferior storage. | |
1777feb0 | 71 | Arguments are separated by spaces. Empty string (pointer to '\0') |
3e43a32a | 72 | means no args. */ |
c906108c | 73 | |
3f81c18a | 74 | static char *inferior_args_scratch; |
c906108c | 75 | |
d092c5a2 SDJ |
76 | /* Scratch area where the new cwd will be stored by 'set cwd'. */ |
77 | ||
78 | static char *inferior_cwd_scratch; | |
79 | ||
3f81c18a VP |
80 | /* Scratch area where 'set inferior-tty' will store user-provided value. |
81 | We'll immediate copy it into per-inferior storage. */ | |
552c04a7 | 82 | |
3f81c18a | 83 | static char *inferior_io_terminal_scratch; |
c906108c SS |
84 | |
85 | /* Pid of our debugged inferior, or 0 if no inferior now. | |
86 | Since various parts of infrun.c test this to see whether there is a program | |
87 | being debugged it should be nonzero (currently 3 is used) for remote | |
88 | debugging. */ | |
89 | ||
39f77062 | 90 | ptid_t inferior_ptid; |
c906108c | 91 | |
c906108c SS |
92 | /* Nonzero if stopped due to completion of a stack dummy routine. */ |
93 | ||
aa7d318d | 94 | enum stop_stack_kind stop_stack_dummy; |
c906108c SS |
95 | |
96 | /* Nonzero if stopped due to a random (unexpected) signal in inferior | |
97 | process. */ | |
98 | ||
99 | int stopped_by_random_signal; | |
100 | ||
c906108c | 101 | \f |
3f81c18a VP |
102 | |
103 | static void | |
eb4c3f4a | 104 | set_inferior_tty_command (const char *args, int from_tty, |
3f81c18a VP |
105 | struct cmd_list_element *c) |
106 | { | |
107 | /* CLI has assigned the user-provided value to inferior_io_terminal_scratch. | |
108 | Now route it to current inferior. */ | |
05779d57 | 109 | current_inferior ()->set_tty (inferior_io_terminal_scratch); |
3f81c18a VP |
110 | } |
111 | ||
112 | static void | |
113 | show_inferior_tty_command (struct ui_file *file, int from_tty, | |
114 | struct cmd_list_element *c, const char *value) | |
115 | { | |
116 | /* Note that we ignore the passed-in value in favor of computing it | |
117 | directly. */ | |
05779d57 | 118 | const char *inferior_tty = current_inferior ()->tty (); |
abbb1732 | 119 | |
05779d57 PA |
120 | if (inferior_tty == nullptr) |
121 | inferior_tty = ""; | |
3f81c18a | 122 | fprintf_filtered (gdb_stdout, |
275f2e57 | 123 | _("Terminal for future runs of program being debugged " |
05779d57 | 124 | "is \"%s\".\n"), inferior_tty); |
3cb3b8df BR |
125 | } |
126 | ||
cbaaa0ca | 127 | const char * |
07091751 FN |
128 | get_inferior_args (void) |
129 | { | |
3f81c18a | 130 | if (current_inferior ()->argc != 0) |
552c04a7 | 131 | { |
8c4b5f3d | 132 | gdb::array_view<char * const> args (current_inferior ()->argv, |
dda83cd7 | 133 | current_inferior ()->argc); |
8c4b5f3d | 134 | std::string n = construct_inferior_arguments (args); |
c699004a | 135 | set_inferior_args (n.c_str ()); |
552c04a7 TT |
136 | } |
137 | ||
3f81c18a VP |
138 | if (current_inferior ()->args == NULL) |
139 | current_inferior ()->args = xstrdup (""); | |
552c04a7 | 140 | |
3f81c18a | 141 | return current_inferior ()->args; |
07091751 FN |
142 | } |
143 | ||
3f81c18a VP |
144 | /* Set the arguments for the current inferior. Ownership of |
145 | NEWARGS is not transferred. */ | |
146 | ||
147 | void | |
0b39b52e | 148 | set_inferior_args (const char *newargs) |
07091751 | 149 | { |
3f81c18a VP |
150 | xfree (current_inferior ()->args); |
151 | current_inferior ()->args = newargs ? xstrdup (newargs) : NULL; | |
152 | current_inferior ()->argc = 0; | |
153 | current_inferior ()->argv = 0; | |
07091751 | 154 | } |
c5aa993b | 155 | |
552c04a7 TT |
156 | void |
157 | set_inferior_args_vector (int argc, char **argv) | |
158 | { | |
3f81c18a VP |
159 | current_inferior ()->argc = argc; |
160 | current_inferior ()->argv = argv; | |
552c04a7 TT |
161 | } |
162 | ||
163 | /* Notice when `set args' is run. */ | |
6339bfc4 | 164 | |
552c04a7 | 165 | static void |
eb4c3f4a | 166 | set_args_command (const char *args, int from_tty, struct cmd_list_element *c) |
552c04a7 | 167 | { |
3f81c18a VP |
168 | /* CLI has assigned the user-provided value to inferior_args_scratch. |
169 | Now route it to current inferior. */ | |
170 | set_inferior_args (inferior_args_scratch); | |
552c04a7 TT |
171 | } |
172 | ||
173 | /* Notice when `show args' is run. */ | |
6339bfc4 | 174 | |
552c04a7 | 175 | static void |
3f81c18a VP |
176 | show_args_command (struct ui_file *file, int from_tty, |
177 | struct cmd_list_element *c, const char *value) | |
552c04a7 | 178 | { |
258c00cc TT |
179 | /* Note that we ignore the passed-in value in favor of computing it |
180 | directly. */ | |
181 | deprecated_show_value_hack (file, from_tty, c, get_inferior_args ()); | |
552c04a7 TT |
182 | } |
183 | ||
268a13a5 | 184 | /* See gdbsupport/common-inferior.h. */ |
d092c5a2 | 185 | |
bc3b087d | 186 | void |
d092c5a2 SDJ |
187 | set_inferior_cwd (const char *cwd) |
188 | { | |
189 | struct inferior *inf = current_inferior (); | |
190 | ||
191 | gdb_assert (inf != NULL); | |
192 | ||
193 | if (cwd == NULL) | |
194 | inf->cwd.reset (); | |
195 | else | |
196 | inf->cwd.reset (xstrdup (cwd)); | |
197 | } | |
198 | ||
268a13a5 | 199 | /* See gdbsupport/common-inferior.h. */ |
d092c5a2 SDJ |
200 | |
201 | const char * | |
202 | get_inferior_cwd () | |
203 | { | |
204 | return current_inferior ()->cwd.get (); | |
205 | } | |
206 | ||
207 | /* Handle the 'set cwd' command. */ | |
208 | ||
209 | static void | |
eb4c3f4a | 210 | set_cwd_command (const char *args, int from_tty, struct cmd_list_element *c) |
d092c5a2 SDJ |
211 | { |
212 | if (*inferior_cwd_scratch == '\0') | |
213 | set_inferior_cwd (NULL); | |
214 | else | |
215 | set_inferior_cwd (inferior_cwd_scratch); | |
216 | } | |
217 | ||
218 | /* Handle the 'show cwd' command. */ | |
219 | ||
220 | static void | |
221 | show_cwd_command (struct ui_file *file, int from_tty, | |
222 | struct cmd_list_element *c, const char *value) | |
223 | { | |
224 | const char *cwd = get_inferior_cwd (); | |
225 | ||
226 | if (cwd == NULL) | |
227 | fprintf_filtered (gdb_stdout, | |
228 | _("\ | |
229 | You have not set the inferior's current working directory.\n\ | |
bc3b087d SDJ |
230 | The inferior will inherit GDB's cwd if native debugging, or the remote\n\ |
231 | server's cwd if remote debugging.\n")); | |
d092c5a2 SDJ |
232 | else |
233 | fprintf_filtered (gdb_stdout, | |
234 | _("Current working directory that will be used " | |
235 | "when starting the inferior is \"%s\".\n"), cwd); | |
236 | } | |
237 | ||
552c04a7 | 238 | |
6c4486e6 PA |
239 | /* This function strips the '&' character (indicating background |
240 | execution) that is added as *the last* of the arguments ARGS of a | |
241 | command. A copy of the incoming ARGS without the '&' is returned, | |
242 | unless the resulting string after stripping is empty, in which case | |
243 | NULL is returned. *BG_CHAR_P is an output boolean that indicates | |
244 | whether the '&' character was found. */ | |
6339bfc4 | 245 | |
6be9a197 | 246 | static gdb::unique_xmalloc_ptr<char> |
6c4486e6 | 247 | strip_bg_char (const char *args, int *bg_char_p) |
43ff13b4 | 248 | { |
6c4486e6 | 249 | const char *p; |
c5aa993b | 250 | |
6c4486e6 PA |
251 | if (args == NULL || *args == '\0') |
252 | { | |
253 | *bg_char_p = 0; | |
254 | return NULL; | |
255 | } | |
c5aa993b | 256 | |
6c4486e6 PA |
257 | p = args + strlen (args); |
258 | if (p[-1] == '&') | |
43ff13b4 | 259 | { |
6c4486e6 PA |
260 | p--; |
261 | while (p > args && isspace (p[-1])) | |
262 | p--; | |
263 | ||
264 | *bg_char_p = 1; | |
265 | if (p != args) | |
6be9a197 TT |
266 | return gdb::unique_xmalloc_ptr<char> |
267 | (savestring (args, p - args)); | |
6c4486e6 | 268 | else |
6be9a197 | 269 | return gdb::unique_xmalloc_ptr<char> (nullptr); |
43ff13b4 | 270 | } |
6c4486e6 PA |
271 | |
272 | *bg_char_p = 0; | |
b02f78f9 | 273 | return make_unique_xstrdup (args); |
43ff13b4 JM |
274 | } |
275 | ||
281b533b DJ |
276 | /* Common actions to take after creating any sort of inferior, by any |
277 | means (running, attaching, connecting, et cetera). The target | |
278 | should be stopped. */ | |
279 | ||
280 | void | |
a7aba266 | 281 | post_create_inferior (int from_tty) |
281b533b | 282 | { |
ce406537 | 283 | |
b79599ff | 284 | /* Be sure we own the terminal in case write operations are performed. */ |
223ffa71 | 285 | target_terminal::ours_for_output (); |
b79599ff | 286 | |
424163ea DJ |
287 | /* If the target hasn't taken care of this already, do it now. |
288 | Targets which need to access registers during to_open, | |
289 | to_create_inferior, or to_attach should do it earlier; but many | |
290 | don't need to. */ | |
291 | target_find_description (); | |
292 | ||
ce406537 PA |
293 | /* Now that we know the register layout, retrieve current PC. But |
294 | if the PC is unavailable (e.g., we're opening a core file with | |
295 | missing registers info), ignore it. */ | |
f2ffa92b PA |
296 | thread_info *thr = inferior_thread (); |
297 | ||
298 | thr->suspend.stop_pc = 0; | |
a70b8144 | 299 | try |
ce406537 | 300 | { |
8dc3273e SM |
301 | regcache *rc = get_thread_regcache (thr); |
302 | thr->suspend.stop_pc = regcache_read_pc (rc); | |
ce406537 | 303 | } |
230d2906 | 304 | catch (const gdb_exception_error &ex) |
7556d4a4 PA |
305 | { |
306 | if (ex.error != NOT_AVAILABLE_ERROR) | |
eedc3f4f | 307 | throw; |
7556d4a4 | 308 | } |
f698437e | 309 | |
7e10abd1 | 310 | if (current_program_space->exec_bfd ()) |
50c71eaf | 311 | { |
2eff07b3 PP |
312 | const unsigned solib_add_generation |
313 | = current_program_space->solib_add_generation; | |
314 | ||
9353355f DJ |
315 | /* Create the hooks to handle shared library load and unload |
316 | events. */ | |
268a4a75 | 317 | solib_create_inferior_hook (from_tty); |
268a4a75 | 318 | |
2eff07b3 PP |
319 | if (current_program_space->solib_add_generation == solib_add_generation) |
320 | { | |
321 | /* The platform-specific hook should load initial shared libraries, | |
322 | but didn't. FROM_TTY will be incorrectly 0 but such solib | |
323 | targets should be fixed anyway. Call it only after the solib | |
324 | target has been initialized by solib_create_inferior_hook. */ | |
325 | ||
326 | if (info_verbose) | |
327 | warning (_("platform-specific solib_create_inferior_hook did " | |
328 | "not load initial shared libraries.")); | |
329 | ||
330 | /* If the solist is global across processes, there's no need to | |
331 | refetch it here. */ | |
f5656ead | 332 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
e696b3ad | 333 | solib_add (NULL, 0, auto_solib_add); |
2eff07b3 | 334 | } |
9353355f DJ |
335 | } |
336 | ||
ea5d7a99 PM |
337 | /* If the user sets watchpoints before execution having started, |
338 | then she gets software watchpoints, because GDB can't know which | |
339 | target will end up being pushed, or if it supports hardware | |
340 | watchpoints or not. breakpoint_re_set takes care of promoting | |
341 | watchpoints to hardware watchpoints if possible, however, if this | |
342 | new inferior doesn't load shared libraries or we don't pull in | |
343 | symbols from any other source on this target/arch, | |
344 | breakpoint_re_set is never called. Call it now so that software | |
345 | watchpoints get a chance to be promoted to hardware watchpoints | |
346 | if the now pushed target supports hardware watchpoints. */ | |
347 | breakpoint_re_set (); | |
348 | ||
a0ff652f | 349 | gdb::observers::inferior_created.notify (current_inferior ()); |
281b533b DJ |
350 | } |
351 | ||
a4d5f2e0 JB |
352 | /* Kill the inferior if already running. This function is designed |
353 | to be called when we are about to start the execution of the program | |
354 | from the beginning. Ask the user to confirm that he wants to restart | |
355 | the program being debugged when FROM_TTY is non-null. */ | |
c906108c | 356 | |
8edfe269 | 357 | static void |
a4d5f2e0 JB |
358 | kill_if_already_running (int from_tty) |
359 | { | |
55f6301a | 360 | if (inferior_ptid != null_ptid && target_has_execution ()) |
c906108c | 361 | { |
8edfe269 DJ |
362 | /* Bail out before killing the program if we will not be able to |
363 | restart it. */ | |
364 | target_require_runnable (); | |
365 | ||
adf40b2e | 366 | if (from_tty |
9e2f0ad4 HZ |
367 | && !query (_("The program being debugged has been started already.\n\ |
368 | Start it from the beginning? "))) | |
8a3fe4f8 | 369 | error (_("Program not restarted.")); |
c906108c | 370 | target_kill (); |
c906108c | 371 | } |
a4d5f2e0 JB |
372 | } |
373 | ||
329ea579 | 374 | /* See inferior.h. */ |
8bc2fe48 | 375 | |
329ea579 | 376 | void |
8bc2fe48 PA |
377 | prepare_execution_command (struct target_ops *target, int background) |
378 | { | |
379 | /* If we get a request for running in the bg but the target | |
380 | doesn't support it, error out. */ | |
f6ac5f3d | 381 | if (background && !target->can_async_p ()) |
8bc2fe48 PA |
382 | error (_("Asynchronous execution not supported on this target.")); |
383 | ||
0b333c5e | 384 | if (!background) |
8bc2fe48 | 385 | { |
0b333c5e PA |
386 | /* If we get a request for running in the fg, then we need to |
387 | simulate synchronous (fg) execution. Note no cleanup is | |
388 | necessary for this. stdin is re-enabled whenever an error | |
389 | reaches the top level. */ | |
a8836c93 | 390 | all_uis_on_sync_execution_starting (); |
8bc2fe48 PA |
391 | } |
392 | } | |
393 | ||
4e5a4f58 JB |
394 | /* Determine how the new inferior will behave. */ |
395 | ||
396 | enum run_how | |
397 | { | |
398 | /* Run program without any explicit stop during startup. */ | |
399 | RUN_NORMAL, | |
400 | ||
401 | /* Stop at the beginning of the program's main function. */ | |
402 | RUN_STOP_AT_MAIN, | |
403 | ||
404 | /* Stop at the first instruction of the program. */ | |
405 | RUN_STOP_AT_FIRST_INSN | |
406 | }; | |
407 | ||
408 | /* Implement the "run" command. Force a stop during program start if | |
409 | requested by RUN_HOW. */ | |
f67a969f | 410 | |
a4d5f2e0 | 411 | static void |
0b39b52e | 412 | run_command_1 (const char *args, int from_tty, enum run_how run_how) |
a4d5f2e0 | 413 | { |
7c5ded6a | 414 | const char *exec_file; |
79a45e25 | 415 | struct ui_out *uiout = current_uiout; |
b3ccfe11 | 416 | struct target_ops *run_target; |
6c4486e6 | 417 | int async_exec; |
c906108c | 418 | |
a4d5f2e0 JB |
419 | dont_repeat (); |
420 | ||
1192f124 SM |
421 | scoped_disable_commit_resumed disable_commit_resumed ("running"); |
422 | ||
a4d5f2e0 | 423 | kill_if_already_running (from_tty); |
3c35e65b UW |
424 | |
425 | init_wait_for_inferior (); | |
c906108c SS |
426 | clear_breakpoint_hit_counts (); |
427 | ||
fd79ecee DJ |
428 | /* Clean up any leftovers from other runs. Some other things from |
429 | this function should probably be moved into target_pre_inferior. */ | |
430 | target_pre_inferior (from_tty); | |
431 | ||
39ad761d JB |
432 | /* The comment here used to read, "The exec file is re-read every |
433 | time we do a generic_mourn_inferior, so we just have to worry | |
434 | about the symbol file." The `generic_mourn_inferior' function | |
435 | gets called whenever the program exits. However, suppose the | |
436 | program exits, and *then* the executable file changes? We need | |
437 | to check again here. Since reopen_exec_file doesn't do anything | |
438 | if the timestamp hasn't changed, I don't see the harm. */ | |
439 | reopen_exec_file (); | |
c906108c SS |
440 | reread_symbols (); |
441 | ||
6be9a197 TT |
442 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (args, &async_exec); |
443 | args = stripped.get (); | |
f67a969f | 444 | |
8bc2fe48 PA |
445 | /* Do validation and preparation before possibly changing anything |
446 | in the inferior. */ | |
39ad761d | 447 | |
b3ccfe11 TT |
448 | run_target = find_run_target (); |
449 | ||
8bc2fe48 PA |
450 | prepare_execution_command (run_target, async_exec); |
451 | ||
f6ac5f3d | 452 | if (non_stop && !run_target->supports_non_stop ()) |
9908b566 VP |
453 | error (_("The target does not support running in non-stop mode.")); |
454 | ||
8bc2fe48 PA |
455 | /* Done. Can now set breakpoints, change inferior args, etc. */ |
456 | ||
4e5a4f58 JB |
457 | /* Insert temporary breakpoint in main function if requested. */ |
458 | if (run_how == RUN_STOP_AT_MAIN) | |
e242fd12 SM |
459 | { |
460 | std::string arg = string_printf ("-qualified %s", main_name ()); | |
461 | tbreak_command (arg.c_str (), 0); | |
462 | } | |
8bc2fe48 | 463 | |
7c5ded6a | 464 | exec_file = get_exec_file (0); |
8bc2fe48 | 465 | |
c906108c SS |
466 | /* We keep symbols from add-symbol-file, on the grounds that the |
467 | user might want to add some symbols before running the program | |
468 | (right?). But sometimes (dynamic loading where the user manually | |
469 | introduces the new symbols with add-symbol-file), the code which | |
470 | the symbols describe does not persist between runs. Currently | |
471 | the user has to manually nuke all symbols between runs if they | |
472 | want them to go away (PR 2207). This is probably reasonable. */ | |
473 | ||
8bc2fe48 PA |
474 | /* If there were other args, beside '&', process them. */ |
475 | if (args != NULL) | |
476 | set_inferior_args (args); | |
c906108c SS |
477 | |
478 | if (from_tty) | |
479 | { | |
112e8700 SM |
480 | uiout->field_string (NULL, "Starting program"); |
481 | uiout->text (": "); | |
8b93c638 | 482 | if (exec_file) |
112e8700 SM |
483 | uiout->field_string ("execfile", exec_file); |
484 | uiout->spaces (1); | |
552c04a7 TT |
485 | /* We call get_inferior_args() because we might need to compute |
486 | the value now. */ | |
112e8700 SM |
487 | uiout->field_string ("infargs", get_inferior_args ()); |
488 | uiout->text ("\n"); | |
489 | uiout->flush (); | |
c906108c SS |
490 | } |
491 | ||
552c04a7 TT |
492 | /* We call get_inferior_args() because we might need to compute |
493 | the value now. */ | |
f6ac5f3d PA |
494 | run_target->create_inferior (exec_file, |
495 | std::string (get_inferior_args ()), | |
496 | current_inferior ()->environment.envp (), | |
497 | from_tty); | |
b3ccfe11 TT |
498 | /* to_create_inferior should push the target, so after this point we |
499 | shouldn't refer to run_target again. */ | |
500 | run_target = NULL; | |
281b533b | 501 | |
29f49a6a PA |
502 | /* We're starting off a new process. When we get out of here, in |
503 | non-stop mode, finish the state of all threads of that process, | |
504 | but leave other threads alone, as they may be stopped in internal | |
505 | events --- the frontend shouldn't see them as stopped. In | |
506 | all-stop, always finish the state of all threads, as we may be | |
507 | resuming more than just the new process. */ | |
5b6d1e4f PA |
508 | process_stratum_target *finish_target; |
509 | ptid_t finish_ptid; | |
510 | if (non_stop) | |
511 | { | |
512 | finish_target = current_inferior ()->process_target (); | |
513 | finish_ptid = ptid_t (current_inferior ()->pid); | |
514 | } | |
515 | else | |
516 | { | |
517 | finish_target = nullptr; | |
518 | finish_ptid = minus_one_ptid; | |
519 | } | |
520 | scoped_finish_thread_state finish_state (finish_target, finish_ptid); | |
29f49a6a | 521 | |
de1b3c3d PA |
522 | /* Pass zero for FROM_TTY, because at this point the "run" command |
523 | has done its thing; now we are setting up the running program. */ | |
a7aba266 | 524 | post_create_inferior (0); |
281b533b | 525 | |
4e5a4f58 JB |
526 | /* Queue a pending event so that the program stops immediately. */ |
527 | if (run_how == RUN_STOP_AT_FIRST_INSN) | |
528 | { | |
529 | thread_info *thr = inferior_thread (); | |
530 | thr->suspend.waitstatus_pending_p = 1; | |
531 | thr->suspend.waitstatus.kind = TARGET_WAITKIND_STOPPED; | |
532 | thr->suspend.waitstatus.value.sig = GDB_SIGNAL_0; | |
533 | } | |
534 | ||
74d1f91e JK |
535 | /* Start the target running. Do not use -1 continuation as it would skip |
536 | breakpoint right at the entry point. */ | |
64ce06e4 | 537 | proceed (regcache_read_pc (get_current_regcache ()), GDB_SIGNAL_0); |
c906108c | 538 | |
29f49a6a PA |
539 | /* Since there was no error, there's no need to finish the thread |
540 | states here. */ | |
731f534f | 541 | finish_state.release (); |
1192f124 SM |
542 | |
543 | disable_commit_resumed.reset_and_commit (); | |
29f49a6a | 544 | } |
c906108c | 545 | |
f67a969f | 546 | static void |
0b39b52e | 547 | run_command (const char *args, int from_tty) |
f67a969f | 548 | { |
4e5a4f58 | 549 | run_command_1 (args, from_tty, RUN_NORMAL); |
f67a969f JB |
550 | } |
551 | ||
a4d5f2e0 JB |
552 | /* Start the execution of the program up until the beginning of the main |
553 | program. */ | |
554 | ||
555 | static void | |
0b39b52e | 556 | start_command (const char *args, int from_tty) |
a4d5f2e0 JB |
557 | { |
558 | /* Some languages such as Ada need to search inside the program | |
559 | minimal symbols for the location where to put the temporary | |
560 | breakpoint before starting. */ | |
561 | if (!have_minimal_symbols ()) | |
8a3fe4f8 | 562 | error (_("No symbol table loaded. Use the \"file\" command.")); |
a4d5f2e0 | 563 | |
f67a969f | 564 | /* Run the program until reaching the main procedure... */ |
4e5a4f58 JB |
565 | run_command_1 (args, from_tty, RUN_STOP_AT_MAIN); |
566 | } | |
567 | ||
568 | /* Start the execution of the program stopping at the first | |
569 | instruction. */ | |
570 | ||
571 | static void | |
0b39b52e | 572 | starti_command (const char *args, int from_tty) |
4e5a4f58 JB |
573 | { |
574 | run_command_1 (args, from_tty, RUN_STOP_AT_FIRST_INSN); | |
a4d5f2e0 JB |
575 | } |
576 | ||
8cae4b3f PA |
577 | static int |
578 | proceed_thread_callback (struct thread_info *thread, void *arg) | |
579 | { | |
74531fed PA |
580 | /* We go through all threads individually instead of compressing |
581 | into a single target `resume_all' request, because some threads | |
582 | may be stopped in internal breakpoints/events, or stopped waiting | |
583 | for its turn in the displaced stepping queue (that is, they are | |
584 | running && !executing). The target side has no idea about why | |
585 | the thread is stopped, so a `resume_all' command would resume too | |
586 | much. If/when GDB gains a way to tell the target `hold this | |
587 | thread stopped until I say otherwise', then we can optimize | |
588 | this. */ | |
00431a78 | 589 | if (thread->state != THREAD_STOPPED) |
8cae4b3f PA |
590 | return 0; |
591 | ||
5b6d1e4f PA |
592 | if (!thread->inf->has_execution ()) |
593 | return 0; | |
594 | ||
00431a78 | 595 | switch_to_thread (thread); |
70509625 | 596 | clear_proceed_status (0); |
64ce06e4 | 597 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
8cae4b3f PA |
598 | return 0; |
599 | } | |
600 | ||
70221824 | 601 | static void |
d729566a PA |
602 | ensure_valid_thread (void) |
603 | { | |
00431a78 PA |
604 | if (inferior_ptid == null_ptid |
605 | || inferior_thread ()->state == THREAD_EXITED) | |
3e43a32a | 606 | error (_("Cannot execute this command without a live selected thread.")); |
d729566a PA |
607 | } |
608 | ||
573cda03 | 609 | /* If the user is looking at trace frames, any resumption of execution |
1777feb0 | 610 | is likely to mix up recorded and live target data. So simply |
573cda03 SS |
611 | disallow those commands. */ |
612 | ||
70221824 | 613 | static void |
573cda03 SS |
614 | ensure_not_tfind_mode (void) |
615 | { | |
616 | if (get_traceframe_number () >= 0) | |
3e43a32a | 617 | error (_("Cannot execute this command while looking at trace frames.")); |
573cda03 SS |
618 | } |
619 | ||
3d3fef6b YQ |
620 | /* Throw an error indicating the current thread is running. */ |
621 | ||
622 | static void | |
623 | error_is_running (void) | |
624 | { | |
625 | error (_("Cannot execute this command while " | |
626 | "the selected thread is running.")); | |
627 | } | |
628 | ||
629 | /* Calls error_is_running if the current thread is running. */ | |
630 | ||
631 | static void | |
632 | ensure_not_running (void) | |
633 | { | |
00431a78 | 634 | if (inferior_thread ()->state == THREAD_RUNNING) |
3d3fef6b YQ |
635 | error_is_running (); |
636 | } | |
637 | ||
77ebaa5a VP |
638 | void |
639 | continue_1 (int all_threads) | |
640 | { | |
3d488bfc | 641 | ERROR_NO_INFERIOR; |
573cda03 | 642 | ensure_not_tfind_mode (); |
3d488bfc | 643 | |
77ebaa5a VP |
644 | if (non_stop && all_threads) |
645 | { | |
646 | /* Don't error out if the current thread is running, because | |
abbb1732 | 647 | there may be other stopped threads. */ |
77ebaa5a | 648 | |
5ed8105e PA |
649 | /* Backup current thread and selected frame and restore on scope |
650 | exit. */ | |
651 | scoped_restore_current_thread restore_thread; | |
77ebaa5a VP |
652 | |
653 | iterate_over_threads (proceed_thread_callback, NULL); | |
654 | ||
3b12939d | 655 | if (current_ui->prompt_state == PROMPT_BLOCKED) |
0ff33695 PA |
656 | { |
657 | /* If all threads in the target were already running, | |
658 | proceed_thread_callback ends up never calling proceed, | |
659 | and so nothing calls this to put the inferior's terminal | |
660 | settings in effect and remove stdin from the event loop, | |
661 | which we must when running a foreground command. E.g.: | |
662 | ||
663 | (gdb) c -a& | |
664 | Continuing. | |
665 | <all threads are running now> | |
666 | (gdb) c -a | |
667 | Continuing. | |
668 | <no thread was resumed, but the inferior now owns the terminal> | |
669 | */ | |
223ffa71 | 670 | target_terminal::inferior (); |
0ff33695 | 671 | } |
77ebaa5a VP |
672 | } |
673 | else | |
674 | { | |
d729566a | 675 | ensure_valid_thread (); |
77ebaa5a | 676 | ensure_not_running (); |
70509625 | 677 | clear_proceed_status (0); |
64ce06e4 | 678 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
77ebaa5a VP |
679 | } |
680 | } | |
681 | ||
8cae4b3f | 682 | /* continue [-a] [proceed-count] [&] */ |
6339bfc4 | 683 | |
1dd5fedc | 684 | static void |
0b39b52e | 685 | continue_command (const char *args, int from_tty) |
c906108c | 686 | { |
6c4486e6 | 687 | int async_exec; |
5b6d1e4f | 688 | bool all_threads_p = false; |
6c4486e6 | 689 | |
c906108c SS |
690 | ERROR_NO_INFERIOR; |
691 | ||
1777feb0 | 692 | /* Find out whether we must run in the background. */ |
6be9a197 TT |
693 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (args, &async_exec); |
694 | args = stripped.get (); | |
43ff13b4 | 695 | |
8cae4b3f PA |
696 | if (args != NULL) |
697 | { | |
61012eef | 698 | if (startswith (args, "-a")) |
8cae4b3f | 699 | { |
5b6d1e4f | 700 | all_threads_p = true; |
8cae4b3f PA |
701 | args += sizeof ("-a") - 1; |
702 | if (*args == '\0') | |
703 | args = NULL; | |
704 | } | |
705 | } | |
706 | ||
5b6d1e4f | 707 | if (!non_stop && all_threads_p) |
8cae4b3f PA |
708 | error (_("`-a' is meaningless in all-stop mode.")); |
709 | ||
5b6d1e4f | 710 | if (args != NULL && all_threads_p) |
3e43a32a MS |
711 | error (_("Can't resume all threads and specify " |
712 | "proceed count simultaneously.")); | |
8cae4b3f PA |
713 | |
714 | /* If we have an argument left, set proceed count of breakpoint we | |
715 | stopped at. */ | |
716 | if (args != NULL) | |
c906108c | 717 | { |
347bddb7 | 718 | bpstat bs = NULL; |
8671a17b PA |
719 | int num, stat; |
720 | int stopped = 0; | |
347bddb7 PA |
721 | struct thread_info *tp; |
722 | ||
723 | if (non_stop) | |
00431a78 | 724 | tp = inferior_thread (); |
347bddb7 PA |
725 | else |
726 | { | |
5b6d1e4f | 727 | process_stratum_target *last_target; |
347bddb7 | 728 | ptid_t last_ptid; |
347bddb7 | 729 | |
5b6d1e4f PA |
730 | get_last_target_status (&last_target, &last_ptid, nullptr); |
731 | tp = find_thread_ptid (last_target, last_ptid); | |
347bddb7 PA |
732 | } |
733 | if (tp != NULL) | |
16c381f0 | 734 | bs = tp->control.stop_bpstat; |
8671a17b PA |
735 | |
736 | while ((stat = bpstat_num (&bs, &num)) != 0) | |
737 | if (stat > 0) | |
738 | { | |
739 | set_ignore_count (num, | |
8cae4b3f | 740 | parse_and_eval_long (args) - 1, |
8671a17b PA |
741 | from_tty); |
742 | /* set_ignore_count prints a message ending with a period. | |
743 | So print two spaces before "Continuing.". */ | |
744 | if (from_tty) | |
745 | printf_filtered (" "); | |
746 | stopped = 1; | |
747 | } | |
748 | ||
749 | if (!stopped && from_tty) | |
c906108c SS |
750 | { |
751 | printf_filtered | |
752 | ("Not stopped at any breakpoint; argument ignored.\n"); | |
753 | } | |
c906108c SS |
754 | } |
755 | ||
3b12939d PA |
756 | ERROR_NO_INFERIOR; |
757 | ensure_not_tfind_mode (); | |
758 | ||
5b6d1e4f | 759 | if (!non_stop || !all_threads_p) |
3b12939d PA |
760 | { |
761 | ensure_valid_thread (); | |
762 | ensure_not_running (); | |
763 | } | |
764 | ||
328d42d8 | 765 | prepare_execution_command (current_inferior ()->top_target (), async_exec); |
3b12939d | 766 | |
c906108c | 767 | if (from_tty) |
a3f17187 | 768 | printf_filtered (_("Continuing.\n")); |
c906108c | 769 | |
5b6d1e4f | 770 | continue_1 (all_threads_p); |
c906108c SS |
771 | } |
772 | \f | |
29734269 | 773 | /* Record in TP the starting point of a "step" or "next" command. */ |
edb3359d DJ |
774 | |
775 | static void | |
29734269 | 776 | set_step_frame (thread_info *tp) |
edb3359d | 777 | { |
29734269 SM |
778 | /* This can be removed once this function no longer implicitly relies on the |
779 | inferior_ptid value. */ | |
780 | gdb_assert (inferior_ptid == tp->ptid); | |
781 | ||
51abb421 | 782 | frame_info *frame = get_current_frame (); |
edb3359d | 783 | |
51abb421 | 784 | symtab_and_line sal = find_frame_sal (frame); |
29734269 | 785 | set_step_info (tp, frame, sal); |
51abb421 PA |
786 | |
787 | CORE_ADDR pc = get_frame_pc (frame); | |
64ce06e4 | 788 | tp->control.step_start_function = find_pc_function (pc); |
edb3359d DJ |
789 | } |
790 | ||
c906108c SS |
791 | /* Step until outside of current statement. */ |
792 | ||
c906108c | 793 | static void |
0b39b52e | 794 | step_command (const char *count_string, int from_tty) |
c906108c SS |
795 | { |
796 | step_1 (0, 0, count_string); | |
797 | } | |
798 | ||
799 | /* Likewise, but skip over subroutine calls as if single instructions. */ | |
800 | ||
c906108c | 801 | static void |
0b39b52e | 802 | next_command (const char *count_string, int from_tty) |
c906108c SS |
803 | { |
804 | step_1 (1, 0, count_string); | |
805 | } | |
806 | ||
807 | /* Likewise, but step only one instruction. */ | |
808 | ||
1dd5fedc | 809 | static void |
0b39b52e | 810 | stepi_command (const char *count_string, int from_tty) |
c906108c SS |
811 | { |
812 | step_1 (0, 1, count_string); | |
813 | } | |
814 | ||
1dd5fedc | 815 | static void |
0b39b52e | 816 | nexti_command (const char *count_string, int from_tty) |
c906108c SS |
817 | { |
818 | step_1 (1, 1, count_string); | |
819 | } | |
820 | ||
243a9253 PA |
821 | /* Data for the FSM that manages the step/next/stepi/nexti |
822 | commands. */ | |
823 | ||
46e3ed7f | 824 | struct step_command_fsm : public thread_fsm |
243a9253 | 825 | { |
243a9253 PA |
826 | /* How many steps left in a "step N"-like command. */ |
827 | int count; | |
828 | ||
829 | /* If true, this is a next/nexti, otherwise a step/stepi. */ | |
830 | int skip_subroutines; | |
831 | ||
832 | /* If true, this is a stepi/nexti, otherwise a step/step. */ | |
833 | int single_inst; | |
243a9253 | 834 | |
46e3ed7f TT |
835 | explicit step_command_fsm (struct interp *cmd_interp) |
836 | : thread_fsm (cmd_interp) | |
837 | { | |
838 | } | |
243a9253 | 839 | |
46e3ed7f TT |
840 | void clean_up (struct thread_info *thread) override; |
841 | bool should_stop (struct thread_info *thread) override; | |
842 | enum async_reply_reason do_async_reply_reason () override; | |
243a9253 PA |
843 | }; |
844 | ||
243a9253 PA |
845 | /* Prepare for a step/next/etc. command. Any target resource |
846 | allocated here is undone in the FSM's clean_up method. */ | |
847 | ||
848 | static void | |
849 | step_command_fsm_prepare (struct step_command_fsm *sm, | |
850 | int skip_subroutines, int single_inst, | |
851 | int count, struct thread_info *thread) | |
852 | { | |
853 | sm->skip_subroutines = skip_subroutines; | |
854 | sm->single_inst = single_inst; | |
855 | sm->count = count; | |
243a9253 PA |
856 | |
857 | /* Leave the si command alone. */ | |
858 | if (!sm->single_inst || sm->skip_subroutines) | |
859 | set_longjmp_breakpoint (thread, get_frame_id (get_current_frame ())); | |
860 | ||
861 | thread->control.stepping_command = 1; | |
862 | } | |
863 | ||
29734269 | 864 | static int prepare_one_step (thread_info *, struct step_command_fsm *sm); |
243a9253 | 865 | |
c906108c | 866 | static void |
0b39b52e | 867 | step_1 (int skip_subroutines, int single_inst, const char *count_string) |
c906108c | 868 | { |
243a9253 | 869 | int count; |
6c4486e6 | 870 | int async_exec; |
243a9253 PA |
871 | struct thread_info *thr; |
872 | struct step_command_fsm *step_sm; | |
c5aa993b | 873 | |
c906108c | 874 | ERROR_NO_INFERIOR; |
573cda03 | 875 | ensure_not_tfind_mode (); |
d729566a | 876 | ensure_valid_thread (); |
94cc34af | 877 | ensure_not_running (); |
43ff13b4 | 878 | |
6be9a197 TT |
879 | gdb::unique_xmalloc_ptr<char> stripped |
880 | = strip_bg_char (count_string, &async_exec); | |
881 | count_string = stripped.get (); | |
c5aa993b | 882 | |
328d42d8 | 883 | prepare_execution_command (current_inferior ()->top_target (), async_exec); |
43ff13b4 | 884 | |
bb518678 | 885 | count = count_string ? parse_and_eval_long (count_string) : 1; |
c906108c | 886 | |
243a9253 | 887 | clear_proceed_status (1); |
611c83ae | 888 | |
243a9253 PA |
889 | /* Setup the execution command state machine to handle all the COUNT |
890 | steps. */ | |
891 | thr = inferior_thread (); | |
46e3ed7f TT |
892 | step_sm = new step_command_fsm (command_interp ()); |
893 | thr->thread_fsm = step_sm; | |
611c83ae | 894 | |
243a9253 PA |
895 | step_command_fsm_prepare (step_sm, skip_subroutines, |
896 | single_inst, count, thr); | |
c2d11a7d | 897 | |
0b333c5e PA |
898 | /* Do only one step for now, before returning control to the event |
899 | loop. Let the continuation figure out how many other steps we | |
900 | need to do, and handle them one at the time, through | |
901 | step_once. */ | |
29734269 | 902 | if (!prepare_one_step (thr, step_sm)) |
243a9253 PA |
903 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
904 | else | |
905 | { | |
3b12939d PA |
906 | int proceeded; |
907 | ||
243a9253 PA |
908 | /* Stepped into an inline frame. Pretend that we've |
909 | stopped. */ | |
46e3ed7f | 910 | thr->thread_fsm->clean_up (thr); |
3b12939d PA |
911 | proceeded = normal_stop (); |
912 | if (!proceeded) | |
b1a35af2 | 913 | inferior_event_handler (INF_EXEC_COMPLETE); |
3b12939d | 914 | all_uis_check_sync_execution_done (); |
243a9253 | 915 | } |
c2d11a7d | 916 | } |
c906108c | 917 | |
243a9253 PA |
918 | /* Implementation of the 'should_stop' FSM method for stepping |
919 | commands. Called after we are done with one step operation, to | |
920 | check whether we need to step again, before we print the prompt and | |
921 | return control to the user. If count is > 1, returns false, as we | |
922 | will need to keep going. */ | |
6339bfc4 | 923 | |
46e3ed7f TT |
924 | bool |
925 | step_command_fsm::should_stop (struct thread_info *tp) | |
c2d11a7d | 926 | { |
243a9253 | 927 | if (tp->control.stop_step) |
f13468d9 | 928 | { |
243a9253 PA |
929 | /* There are more steps to make, and we did stop due to |
930 | ending a stepping range. Do another step. */ | |
46e3ed7f | 931 | if (--count > 0) |
29734269 | 932 | return prepare_one_step (tp, this); |
af679fd0 | 933 | |
46e3ed7f | 934 | set_finished (); |
f107f563 | 935 | } |
af679fd0 | 936 | |
46e3ed7f | 937 | return true; |
c2d11a7d JM |
938 | } |
939 | ||
243a9253 | 940 | /* Implementation of the 'clean_up' FSM method for stepping commands. */ |
37d94800 | 941 | |
46e3ed7f TT |
942 | void |
943 | step_command_fsm::clean_up (struct thread_info *thread) | |
bfec99b2 | 944 | { |
46e3ed7f | 945 | if (!single_inst || skip_subroutines) |
8980e177 | 946 | delete_longjmp_breakpoint (thread->global_num); |
243a9253 PA |
947 | } |
948 | ||
949 | /* Implementation of the 'async_reply_reason' FSM method for stepping | |
950 | commands. */ | |
951 | ||
46e3ed7f TT |
952 | enum async_reply_reason |
953 | step_command_fsm::do_async_reply_reason () | |
243a9253 PA |
954 | { |
955 | return EXEC_ASYNC_END_STEPPING_RANGE; | |
956 | } | |
957 | ||
958 | /* Prepare for one step in "step N". The actual target resumption is | |
959 | done by the caller. Return true if we're done and should thus | |
960 | report a stop to the user. Returns false if the target needs to be | |
961 | resumed. */ | |
c2d11a7d | 962 | |
243a9253 | 963 | static int |
29734269 | 964 | prepare_one_step (thread_info *tp, struct step_command_fsm *sm) |
243a9253 | 965 | { |
29734269 SM |
966 | /* This can be removed once this function no longer implicitly relies on the |
967 | inferior_ptid value. */ | |
968 | gdb_assert (inferior_ptid == tp->ptid); | |
969 | ||
243a9253 | 970 | if (sm->count > 0) |
c906108c | 971 | { |
243a9253 PA |
972 | struct frame_info *frame = get_current_frame (); |
973 | ||
29734269 | 974 | set_step_frame (tp); |
c906108c | 975 | |
243a9253 | 976 | if (!sm->single_inst) |
c906108c | 977 | { |
1641cfcc PA |
978 | CORE_ADDR pc; |
979 | ||
edb3359d | 980 | /* Step at an inlined function behaves like "down". */ |
243a9253 | 981 | if (!sm->skip_subroutines |
00431a78 | 982 | && inline_skipped_frames (tp)) |
edb3359d | 983 | { |
09cee04b | 984 | ptid_t resume_ptid; |
4a4c04f1 BE |
985 | const char *fn = NULL; |
986 | symtab_and_line sal; | |
987 | struct symbol *sym; | |
09cee04b PA |
988 | |
989 | /* Pretend that we've ran. */ | |
990 | resume_ptid = user_visible_resume_ptid (1); | |
5b6d1e4f | 991 | set_running (tp->inf->process_target (), resume_ptid, true); |
09cee04b | 992 | |
00431a78 | 993 | step_into_inline_frame (tp); |
4a4c04f1 BE |
994 | |
995 | frame = get_current_frame (); | |
996 | sal = find_frame_sal (frame); | |
997 | sym = get_frame_function (frame); | |
998 | ||
999 | if (sym != NULL) | |
1000 | fn = sym->print_name (); | |
1001 | ||
1002 | if (sal.line == 0 | |
1003 | || !function_name_is_marked_for_skip (fn, sal)) | |
1004 | { | |
1005 | sm->count--; | |
29734269 | 1006 | return prepare_one_step (tp, sm); |
4a4c04f1 | 1007 | } |
edb3359d DJ |
1008 | } |
1009 | ||
1641cfcc PA |
1010 | pc = get_frame_pc (frame); |
1011 | find_pc_line_pc_range (pc, | |
16c381f0 JK |
1012 | &tp->control.step_range_start, |
1013 | &tp->control.step_range_end); | |
5fbbeb29 | 1014 | |
340d00fb TV |
1015 | /* There's a problem in gcc (PR gcc/98780) that causes missing line |
1016 | table entries, which results in a too large stepping range. | |
1017 | Use inlined_subroutine info to make the range more narrow. */ | |
1018 | if (inline_skipped_frames (tp) > 0) | |
1019 | { | |
1020 | symbol *sym = inline_skipped_symbol (tp); | |
1021 | if (SYMBOL_CLASS (sym) == LOC_BLOCK) | |
1022 | { | |
1023 | const block *block = SYMBOL_BLOCK_VALUE (sym); | |
1024 | if (BLOCK_END (block) < tp->control.step_range_end) | |
1025 | tp->control.step_range_end = BLOCK_END (block); | |
1026 | } | |
1027 | } | |
1028 | ||
c1e36e3e PA |
1029 | tp->control.may_range_step = 1; |
1030 | ||
5fbbeb29 | 1031 | /* If we have no line info, switch to stepi mode. */ |
16c381f0 | 1032 | if (tp->control.step_range_end == 0 && step_stop_if_no_debug) |
c1e36e3e PA |
1033 | { |
1034 | tp->control.step_range_start = tp->control.step_range_end = 1; | |
1035 | tp->control.may_range_step = 0; | |
1036 | } | |
16c381f0 | 1037 | else if (tp->control.step_range_end == 0) |
c906108c | 1038 | { |
2c02bd72 | 1039 | const char *name; |
abbb1732 | 1040 | |
1641cfcc | 1041 | if (find_pc_partial_function (pc, &name, |
16c381f0 JK |
1042 | &tp->control.step_range_start, |
1043 | &tp->control.step_range_end) == 0) | |
8a3fe4f8 | 1044 | error (_("Cannot find bounds of current function")); |
c906108c | 1045 | |
223ffa71 | 1046 | target_terminal::ours_for_output (); |
3e43a32a MS |
1047 | printf_filtered (_("Single stepping until exit from function %s," |
1048 | "\nwhich has no line number information.\n"), | |
1049 | name); | |
c906108c SS |
1050 | } |
1051 | } | |
1052 | else | |
1053 | { | |
1054 | /* Say we are stepping, but stop after one insn whatever it does. */ | |
16c381f0 | 1055 | tp->control.step_range_start = tp->control.step_range_end = 1; |
243a9253 | 1056 | if (!sm->skip_subroutines) |
c906108c SS |
1057 | /* It is stepi. |
1058 | Don't step over function calls, not even to functions lacking | |
1059 | line numbers. */ | |
16c381f0 | 1060 | tp->control.step_over_calls = STEP_OVER_NONE; |
c906108c SS |
1061 | } |
1062 | ||
243a9253 | 1063 | if (sm->skip_subroutines) |
16c381f0 | 1064 | tp->control.step_over_calls = STEP_OVER_ALL; |
c906108c | 1065 | |
243a9253 | 1066 | return 0; |
c906108c | 1067 | } |
243a9253 PA |
1068 | |
1069 | /* Done. */ | |
46e3ed7f | 1070 | sm->set_finished (); |
243a9253 | 1071 | return 1; |
c906108c | 1072 | } |
c2d11a7d | 1073 | |
c906108c SS |
1074 | \f |
1075 | /* Continue program at specified address. */ | |
1076 | ||
1077 | static void | |
0b39b52e | 1078 | jump_command (const char *arg, int from_tty) |
c906108c | 1079 | { |
5af949e3 | 1080 | struct gdbarch *gdbarch = get_current_arch (); |
52f0bd74 | 1081 | CORE_ADDR addr; |
c906108c SS |
1082 | struct symbol *fn; |
1083 | struct symbol *sfn; | |
6c4486e6 | 1084 | int async_exec; |
c5aa993b | 1085 | |
c906108c | 1086 | ERROR_NO_INFERIOR; |
573cda03 | 1087 | ensure_not_tfind_mode (); |
d729566a | 1088 | ensure_valid_thread (); |
94cc34af | 1089 | ensure_not_running (); |
c906108c | 1090 | |
1777feb0 | 1091 | /* Find out whether we must run in the background. */ |
6be9a197 TT |
1092 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (arg, &async_exec); |
1093 | arg = stripped.get (); | |
43ff13b4 | 1094 | |
328d42d8 | 1095 | prepare_execution_command (current_inferior ()->top_target (), async_exec); |
43ff13b4 | 1096 | |
c906108c | 1097 | if (!arg) |
e2e0b3e5 | 1098 | error_no_arg (_("starting address")); |
c906108c | 1099 | |
6c5b2ebe PA |
1100 | std::vector<symtab_and_line> sals |
1101 | = decode_line_with_last_displayed (arg, DECODE_LINE_FUNFIRSTLINE); | |
1102 | if (sals.size () != 1) | |
1103 | error (_("Unreasonable jump request")); | |
c906108c | 1104 | |
6c5b2ebe PA |
1105 | symtab_and_line &sal = sals[0]; |
1106 | ||
c906108c | 1107 | if (sal.symtab == 0 && sal.pc == 0) |
8a3fe4f8 | 1108 | error (_("No source file has been specified.")); |
c906108c | 1109 | |
1777feb0 | 1110 | resolve_sal_pc (&sal); /* May error out. */ |
c906108c | 1111 | |
1777feb0 | 1112 | /* See if we are trying to jump to another function. */ |
c906108c SS |
1113 | fn = get_frame_function (get_current_frame ()); |
1114 | sfn = find_pc_function (sal.pc); | |
1115 | if (fn != NULL && sfn != fn) | |
1116 | { | |
9e2f0ad4 | 1117 | if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal.line, |
987012b8 | 1118 | fn->print_name ())) |
c906108c | 1119 | { |
8a3fe4f8 | 1120 | error (_("Not confirmed.")); |
c906108c SS |
1121 | /* NOTREACHED */ |
1122 | } | |
1123 | } | |
1124 | ||
c5aa993b | 1125 | if (sfn != NULL) |
c906108c | 1126 | { |
253342b8 DE |
1127 | struct obj_section *section; |
1128 | ||
c906108c | 1129 | fixup_symbol_section (sfn, 0); |
ebbc3a7d | 1130 | section = sfn->obj_section (symbol_objfile (sfn)); |
253342b8 DE |
1131 | if (section_is_overlay (section) |
1132 | && !section_is_mapped (section)) | |
c906108c | 1133 | { |
3e43a32a MS |
1134 | if (!query (_("WARNING!!! Destination is in " |
1135 | "unmapped overlay! Jump anyway? "))) | |
c906108c | 1136 | { |
8a3fe4f8 | 1137 | error (_("Not confirmed.")); |
c906108c SS |
1138 | /* NOTREACHED */ |
1139 | } | |
1140 | } | |
1141 | } | |
1142 | ||
c906108c SS |
1143 | addr = sal.pc; |
1144 | ||
1145 | if (from_tty) | |
1146 | { | |
a3f17187 | 1147 | printf_filtered (_("Continuing at ")); |
5af949e3 | 1148 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
c906108c SS |
1149 | printf_filtered (".\n"); |
1150 | } | |
1151 | ||
70509625 | 1152 | clear_proceed_status (0); |
64ce06e4 | 1153 | proceed (addr, GDB_SIGNAL_0); |
c906108c | 1154 | } |
c906108c | 1155 | \f |
c906108c SS |
1156 | /* Continue program giving it specified signal. */ |
1157 | ||
1158 | static void | |
0b39b52e | 1159 | signal_command (const char *signum_exp, int from_tty) |
c906108c | 1160 | { |
2ea28649 | 1161 | enum gdb_signal oursig; |
6c4486e6 | 1162 | int async_exec; |
c906108c SS |
1163 | |
1164 | dont_repeat (); /* Too dangerous. */ | |
1165 | ERROR_NO_INFERIOR; | |
573cda03 | 1166 | ensure_not_tfind_mode (); |
d729566a | 1167 | ensure_valid_thread (); |
94cc34af | 1168 | ensure_not_running (); |
c906108c | 1169 | |
32c1e744 | 1170 | /* Find out whether we must run in the background. */ |
6be9a197 TT |
1171 | gdb::unique_xmalloc_ptr<char> stripped |
1172 | = strip_bg_char (signum_exp, &async_exec); | |
1173 | signum_exp = stripped.get (); | |
32c1e744 | 1174 | |
328d42d8 | 1175 | prepare_execution_command (current_inferior ()->top_target (), async_exec); |
32c1e744 | 1176 | |
c906108c | 1177 | if (!signum_exp) |
e2e0b3e5 | 1178 | error_no_arg (_("signal number")); |
c906108c SS |
1179 | |
1180 | /* It would be even slicker to make signal names be valid expressions, | |
1181 | (the type could be "enum $signal" or some such), then the user could | |
1182 | assign them to convenience variables. */ | |
2ea28649 | 1183 | oursig = gdb_signal_from_name (signum_exp); |
c906108c | 1184 | |
a493e3e2 | 1185 | if (oursig == GDB_SIGNAL_UNKNOWN) |
c906108c SS |
1186 | { |
1187 | /* No, try numeric. */ | |
bb518678 | 1188 | int num = parse_and_eval_long (signum_exp); |
c906108c SS |
1189 | |
1190 | if (num == 0) | |
a493e3e2 | 1191 | oursig = GDB_SIGNAL_0; |
c906108c | 1192 | else |
2ea28649 | 1193 | oursig = gdb_signal_from_command (num); |
c906108c SS |
1194 | } |
1195 | ||
70509625 PA |
1196 | /* Look for threads other than the current that this command ends up |
1197 | resuming too (due to schedlock off), and warn if they'll get a | |
1198 | signal delivered. "signal 0" is used to suppress a previous | |
1199 | signal, but if the current thread is no longer the one that got | |
1200 | the signal, then the user is potentially suppressing the signal | |
1201 | of the wrong thread. */ | |
1202 | if (!non_stop) | |
1203 | { | |
70509625 PA |
1204 | int must_confirm = 0; |
1205 | ||
1206 | /* This indicates what will be resumed. Either a single thread, | |
1207 | a whole process, or all threads of all processes. */ | |
08036331 | 1208 | ptid_t resume_ptid = user_visible_resume_ptid (0); |
5b6d1e4f PA |
1209 | process_stratum_target *resume_target |
1210 | = user_visible_resume_target (resume_ptid); | |
70509625 | 1211 | |
5b6d1e4f PA |
1212 | thread_info *current = inferior_thread (); |
1213 | ||
1214 | for (thread_info *tp : all_non_exited_threads (resume_target, resume_ptid)) | |
70509625 | 1215 | { |
5b6d1e4f | 1216 | if (tp == current) |
70509625 | 1217 | continue; |
70509625 PA |
1218 | |
1219 | if (tp->suspend.stop_signal != GDB_SIGNAL_0 | |
1220 | && signal_pass_state (tp->suspend.stop_signal)) | |
1221 | { | |
1222 | if (!must_confirm) | |
1223 | printf_unfiltered (_("Note:\n")); | |
43792cf0 PA |
1224 | printf_unfiltered (_(" Thread %s previously stopped with signal %s, %s.\n"), |
1225 | print_thread_id (tp), | |
70509625 PA |
1226 | gdb_signal_to_name (tp->suspend.stop_signal), |
1227 | gdb_signal_to_string (tp->suspend.stop_signal)); | |
1228 | must_confirm = 1; | |
1229 | } | |
1230 | } | |
1231 | ||
1232 | if (must_confirm | |
43792cf0 | 1233 | && !query (_("Continuing thread %s (the current thread) with specified signal will\n" |
70509625 PA |
1234 | "still deliver the signals noted above to their respective threads.\n" |
1235 | "Continue anyway? "), | |
43792cf0 | 1236 | print_thread_id (inferior_thread ()))) |
70509625 PA |
1237 | error (_("Not confirmed.")); |
1238 | } | |
1239 | ||
c906108c SS |
1240 | if (from_tty) |
1241 | { | |
a493e3e2 | 1242 | if (oursig == GDB_SIGNAL_0) |
a3f17187 | 1243 | printf_filtered (_("Continuing with no signal.\n")); |
c906108c | 1244 | else |
a3f17187 | 1245 | printf_filtered (_("Continuing with signal %s.\n"), |
2ea28649 | 1246 | gdb_signal_to_name (oursig)); |
c906108c SS |
1247 | } |
1248 | ||
70509625 | 1249 | clear_proceed_status (0); |
64ce06e4 | 1250 | proceed ((CORE_ADDR) -1, oursig); |
c906108c SS |
1251 | } |
1252 | ||
81219e53 DE |
1253 | /* Queue a signal to be delivered to the current thread. */ |
1254 | ||
1255 | static void | |
0b39b52e | 1256 | queue_signal_command (const char *signum_exp, int from_tty) |
81219e53 DE |
1257 | { |
1258 | enum gdb_signal oursig; | |
1259 | struct thread_info *tp; | |
1260 | ||
1261 | ERROR_NO_INFERIOR; | |
1262 | ensure_not_tfind_mode (); | |
1263 | ensure_valid_thread (); | |
1264 | ensure_not_running (); | |
1265 | ||
1266 | if (signum_exp == NULL) | |
1267 | error_no_arg (_("signal number")); | |
1268 | ||
1269 | /* It would be even slicker to make signal names be valid expressions, | |
1270 | (the type could be "enum $signal" or some such), then the user could | |
1271 | assign them to convenience variables. */ | |
1272 | oursig = gdb_signal_from_name (signum_exp); | |
1273 | ||
1274 | if (oursig == GDB_SIGNAL_UNKNOWN) | |
1275 | { | |
1276 | /* No, try numeric. */ | |
1277 | int num = parse_and_eval_long (signum_exp); | |
1278 | ||
1279 | if (num == 0) | |
1280 | oursig = GDB_SIGNAL_0; | |
1281 | else | |
1282 | oursig = gdb_signal_from_command (num); | |
1283 | } | |
1284 | ||
1285 | if (oursig != GDB_SIGNAL_0 | |
1286 | && !signal_pass_state (oursig)) | |
1287 | error (_("Signal handling set to not pass this signal to the program.")); | |
1288 | ||
1289 | tp = inferior_thread (); | |
1290 | tp->suspend.stop_signal = oursig; | |
1291 | } | |
1292 | ||
cfc31633 PA |
1293 | /* Data for the FSM that manages the until (with no argument) |
1294 | command. */ | |
1295 | ||
46e3ed7f | 1296 | struct until_next_fsm : public thread_fsm |
fa4cd53f | 1297 | { |
cfc31633 | 1298 | /* The thread that as current when the command was executed. */ |
fa4cd53f | 1299 | int thread; |
cfc31633 | 1300 | |
46e3ed7f TT |
1301 | until_next_fsm (struct interp *cmd_interp, int thread) |
1302 | : thread_fsm (cmd_interp), | |
1303 | thread (thread) | |
1304 | { | |
1305 | } | |
cfc31633 | 1306 | |
46e3ed7f TT |
1307 | bool should_stop (struct thread_info *thread) override; |
1308 | void clean_up (struct thread_info *thread) override; | |
1309 | enum async_reply_reason do_async_reply_reason () override; | |
cfc31633 PA |
1310 | }; |
1311 | ||
cfc31633 PA |
1312 | /* Implementation of the 'should_stop' FSM method for the until (with |
1313 | no arg) command. */ | |
1314 | ||
46e3ed7f TT |
1315 | bool |
1316 | until_next_fsm::should_stop (struct thread_info *tp) | |
cfc31633 | 1317 | { |
cfc31633 | 1318 | if (tp->control.stop_step) |
46e3ed7f | 1319 | set_finished (); |
cfc31633 | 1320 | |
46e3ed7f | 1321 | return true; |
cfc31633 PA |
1322 | } |
1323 | ||
1324 | /* Implementation of the 'clean_up' FSM method for the until (with no | |
1325 | arg) command. */ | |
186c406b | 1326 | |
46e3ed7f TT |
1327 | void |
1328 | until_next_fsm::clean_up (struct thread_info *thread) | |
186c406b | 1329 | { |
8980e177 | 1330 | delete_longjmp_breakpoint (thread->global_num); |
cfc31633 PA |
1331 | } |
1332 | ||
1333 | /* Implementation of the 'async_reply_reason' FSM method for the until | |
1334 | (with no arg) command. */ | |
1335 | ||
46e3ed7f TT |
1336 | enum async_reply_reason |
1337 | until_next_fsm::do_async_reply_reason () | |
cfc31633 PA |
1338 | { |
1339 | return EXEC_ASYNC_END_STEPPING_RANGE; | |
186c406b TT |
1340 | } |
1341 | ||
c906108c SS |
1342 | /* Proceed until we reach a different source line with pc greater than |
1343 | our current one or exit the function. We skip calls in both cases. | |
1344 | ||
1345 | Note that eventually this command should probably be changed so | |
1346 | that only source lines are printed out when we hit the breakpoint | |
1347 | we set. This may involve changes to wait_for_inferior and the | |
1348 | proceed status code. */ | |
1349 | ||
c906108c | 1350 | static void |
fba45db2 | 1351 | until_next_command (int from_tty) |
c906108c SS |
1352 | { |
1353 | struct frame_info *frame; | |
1354 | CORE_ADDR pc; | |
1355 | struct symbol *func; | |
1356 | struct symtab_and_line sal; | |
4e1c45ea | 1357 | struct thread_info *tp = inferior_thread (); |
5d5658a1 | 1358 | int thread = tp->global_num; |
cfc31633 | 1359 | struct until_next_fsm *sm; |
c5aa993b | 1360 | |
70509625 | 1361 | clear_proceed_status (0); |
29734269 | 1362 | set_step_frame (tp); |
c906108c SS |
1363 | |
1364 | frame = get_current_frame (); | |
1365 | ||
1366 | /* Step until either exited from this function or greater | |
1367 | than the current line (if in symbolic section) or pc (if | |
1777feb0 | 1368 | not). */ |
c906108c | 1369 | |
1c7819ef | 1370 | pc = get_frame_pc (frame); |
c906108c | 1371 | func = find_pc_function (pc); |
c5aa993b | 1372 | |
c906108c SS |
1373 | if (!func) |
1374 | { | |
7cbd4a93 | 1375 | struct bound_minimal_symbol msymbol = lookup_minimal_symbol_by_pc (pc); |
c5aa993b | 1376 | |
7cbd4a93 | 1377 | if (msymbol.minsym == NULL) |
8a3fe4f8 | 1378 | error (_("Execution is not within a known function.")); |
c5aa993b | 1379 | |
77e371c0 | 1380 | tp->control.step_range_start = BMSYMBOL_VALUE_ADDRESS (msymbol); |
7e09a223 YQ |
1381 | /* The upper-bound of step_range is exclusive. In order to make PC |
1382 | within the range, set the step_range_end with PC + 1. */ | |
1383 | tp->control.step_range_end = pc + 1; | |
c906108c SS |
1384 | } |
1385 | else | |
1386 | { | |
1387 | sal = find_pc_line (pc, 0); | |
c5aa993b | 1388 | |
2b1ffcfd | 1389 | tp->control.step_range_start = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (func)); |
16c381f0 | 1390 | tp->control.step_range_end = sal.end; |
c906108c | 1391 | } |
c1e36e3e | 1392 | tp->control.may_range_step = 1; |
c5aa993b | 1393 | |
16c381f0 | 1394 | tp->control.step_over_calls = STEP_OVER_ALL; |
c906108c | 1395 | |
186c406b | 1396 | set_longjmp_breakpoint (tp, get_frame_id (frame)); |
5419bdae | 1397 | delete_longjmp_breakpoint_cleanup lj_deleter (thread); |
186c406b | 1398 | |
46e3ed7f TT |
1399 | sm = new until_next_fsm (command_interp (), tp->global_num); |
1400 | tp->thread_fsm = sm; | |
5419bdae | 1401 | lj_deleter.release (); |
fa4cd53f | 1402 | |
cfc31633 | 1403 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
c906108c SS |
1404 | } |
1405 | ||
c5aa993b | 1406 | static void |
0b39b52e | 1407 | until_command (const char *arg, int from_tty) |
c906108c | 1408 | { |
6c4486e6 | 1409 | int async_exec; |
43ff13b4 | 1410 | |
4247603b | 1411 | ERROR_NO_INFERIOR; |
573cda03 | 1412 | ensure_not_tfind_mode (); |
4247603b PA |
1413 | ensure_valid_thread (); |
1414 | ensure_not_running (); | |
573cda03 | 1415 | |
1777feb0 | 1416 | /* Find out whether we must run in the background. */ |
6be9a197 TT |
1417 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (arg, &async_exec); |
1418 | arg = stripped.get (); | |
43ff13b4 | 1419 | |
328d42d8 | 1420 | prepare_execution_command (current_inferior ()->top_target (), async_exec); |
43ff13b4 | 1421 | |
c906108c | 1422 | if (arg) |
ae66c1fc | 1423 | until_break_command (arg, from_tty, 0); |
c906108c SS |
1424 | else |
1425 | until_next_command (from_tty); | |
1426 | } | |
ae66c1fc EZ |
1427 | |
1428 | static void | |
0b39b52e | 1429 | advance_command (const char *arg, int from_tty) |
ae66c1fc | 1430 | { |
6c4486e6 | 1431 | int async_exec; |
ae66c1fc | 1432 | |
4247603b | 1433 | ERROR_NO_INFERIOR; |
573cda03 | 1434 | ensure_not_tfind_mode (); |
4247603b PA |
1435 | ensure_valid_thread (); |
1436 | ensure_not_running (); | |
573cda03 | 1437 | |
ae66c1fc | 1438 | if (arg == NULL) |
e2e0b3e5 | 1439 | error_no_arg (_("a location")); |
ae66c1fc EZ |
1440 | |
1441 | /* Find out whether we must run in the background. */ | |
6be9a197 TT |
1442 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (arg, &async_exec); |
1443 | arg = stripped.get (); | |
ae66c1fc | 1444 | |
328d42d8 | 1445 | prepare_execution_command (current_inferior ()->top_target (), async_exec); |
ae66c1fc EZ |
1446 | |
1447 | until_break_command (arg, from_tty, 1); | |
1448 | } | |
c906108c | 1449 | \f |
cc72b2a2 | 1450 | /* Return the value of the result of a function at the end of a 'finish' |
8a6c4031 JK |
1451 | command/BP. DTOR_DATA (if not NULL) can represent inferior registers |
1452 | right after an inferior call has finished. */ | |
f941662f | 1453 | |
cc72b2a2 | 1454 | struct value * |
0700e23e | 1455 | get_return_value (struct value *function, struct type *value_type) |
11cf8741 | 1456 | { |
215c69dc YQ |
1457 | regcache *stop_regs = get_current_regcache (); |
1458 | struct gdbarch *gdbarch = stop_regs->arch (); | |
44e5158b AC |
1459 | struct value *value; |
1460 | ||
f168693b | 1461 | value_type = check_typedef (value_type); |
78134374 | 1462 | gdb_assert (value_type->code () != TYPE_CODE_VOID); |
11cf8741 | 1463 | |
92ad9cd9 AC |
1464 | /* FIXME: 2003-09-27: When returning from a nested inferior function |
1465 | call, it's possible (with no help from the architecture vector) | |
1466 | to locate and return/print a "struct return" value. This is just | |
7a9dd1b2 | 1467 | a more complicated case of what is already being done in the |
92ad9cd9 AC |
1468 | inferior function call code. In fact, when inferior function |
1469 | calls are made async, this will likely be made the norm. */ | |
31db7b6c | 1470 | |
6a3a010b | 1471 | switch (gdbarch_return_value (gdbarch, function, value_type, |
c055b101 | 1472 | NULL, NULL, NULL)) |
44e5158b | 1473 | { |
750eb019 AC |
1474 | case RETURN_VALUE_REGISTER_CONVENTION: |
1475 | case RETURN_VALUE_ABI_RETURNS_ADDRESS: | |
181fc57c | 1476 | case RETURN_VALUE_ABI_PRESERVES_ADDRESS: |
44e5158b | 1477 | value = allocate_value (value_type); |
215c69dc | 1478 | gdbarch_return_value (gdbarch, function, value_type, stop_regs, |
990a07ab | 1479 | value_contents_raw (value), NULL); |
750eb019 AC |
1480 | break; |
1481 | case RETURN_VALUE_STRUCT_CONVENTION: | |
1482 | value = NULL; | |
1483 | break; | |
1484 | default: | |
e2e0b3e5 | 1485 | internal_error (__FILE__, __LINE__, _("bad switch")); |
44e5158b | 1486 | } |
bb472c1e | 1487 | |
cc72b2a2 KP |
1488 | return value; |
1489 | } | |
1490 | ||
243a9253 PA |
1491 | /* The captured function return value/type and its position in the |
1492 | value history. */ | |
cc72b2a2 | 1493 | |
243a9253 | 1494 | struct return_value_info |
cc72b2a2 | 1495 | { |
243a9253 PA |
1496 | /* The captured return value. May be NULL if we weren't able to |
1497 | retrieve it. See get_return_value. */ | |
1498 | struct value *value; | |
1499 | ||
1500 | /* The return type. In some cases, we'll not be able extract the | |
1501 | return value, but we always know the type. */ | |
1502 | struct type *type; | |
1503 | ||
1504 | /* If we captured a value, this is the value history index. */ | |
1505 | int value_history_index; | |
1506 | }; | |
1507 | ||
1508 | /* Helper for print_return_value. */ | |
cc72b2a2 | 1509 | |
243a9253 PA |
1510 | static void |
1511 | print_return_value_1 (struct ui_out *uiout, struct return_value_info *rv) | |
1512 | { | |
1513 | if (rv->value != NULL) | |
31db7b6c | 1514 | { |
79a45b7d TT |
1515 | struct value_print_options opts; |
1516 | ||
31db7b6c | 1517 | /* Print it. */ |
112e8700 SM |
1518 | uiout->text ("Value returned is "); |
1519 | uiout->field_fmt ("gdb-result-var", "$%d", | |
d7e74731 | 1520 | rv->value_history_index); |
112e8700 | 1521 | uiout->text (" = "); |
5d9a0608 | 1522 | get_user_print_options (&opts); |
d7e74731 | 1523 | |
000439d5 TT |
1524 | if (opts.finish_print) |
1525 | { | |
1526 | string_file stb; | |
1527 | value_print (rv->value, &stb, &opts); | |
1528 | uiout->field_stream ("return-value", stb); | |
1529 | } | |
1530 | else | |
7f6aba03 TT |
1531 | uiout->field_string ("return-value", _("<not displayed>"), |
1532 | metadata_style.style ()); | |
112e8700 | 1533 | uiout->text ("\n"); |
31db7b6c MK |
1534 | } |
1535 | else | |
1536 | { | |
2f408ecb | 1537 | std::string type_name = type_to_string (rv->type); |
112e8700 SM |
1538 | uiout->text ("Value returned has type: "); |
1539 | uiout->field_string ("return-type", type_name.c_str ()); | |
1540 | uiout->text ("."); | |
1541 | uiout->text (" Cannot determine contents\n"); | |
31db7b6c | 1542 | } |
11cf8741 JM |
1543 | } |
1544 | ||
243a9253 PA |
1545 | /* Print the result of a function at the end of a 'finish' command. |
1546 | RV points at an object representing the captured return value/type | |
1547 | and its position in the value history. */ | |
1548 | ||
1549 | void | |
1550 | print_return_value (struct ui_out *uiout, struct return_value_info *rv) | |
1551 | { | |
f097f5ad | 1552 | if (rv->type == NULL |
78134374 | 1553 | || check_typedef (rv->type)->code () == TYPE_CODE_VOID) |
243a9253 PA |
1554 | return; |
1555 | ||
a70b8144 | 1556 | try |
243a9253 PA |
1557 | { |
1558 | /* print_return_value_1 can throw an exception in some | |
1559 | circumstances. We need to catch this so that we still | |
1560 | delete the breakpoint. */ | |
1561 | print_return_value_1 (uiout, rv); | |
1562 | } | |
230d2906 | 1563 | catch (const gdb_exception &ex) |
243a9253 PA |
1564 | { |
1565 | exception_print (gdb_stdout, ex); | |
1566 | } | |
243a9253 PA |
1567 | } |
1568 | ||
1569 | /* Data for the FSM that manages the finish command. */ | |
f941662f | 1570 | |
46e3ed7f | 1571 | struct finish_command_fsm : public thread_fsm |
43ff13b4 | 1572 | { |
243a9253 PA |
1573 | /* The momentary breakpoint set at the function's return address in |
1574 | the caller. */ | |
46e3ed7f | 1575 | breakpoint_up breakpoint; |
243a9253 PA |
1576 | |
1577 | /* The function that we're stepping out of. */ | |
46e3ed7f | 1578 | struct symbol *function = nullptr; |
8a6c4031 | 1579 | |
243a9253 PA |
1580 | /* If the FSM finishes successfully, this stores the function's |
1581 | return value. */ | |
46e3ed7f | 1582 | struct return_value_info return_value_info {}; |
c5aa993b | 1583 | |
46e3ed7f TT |
1584 | explicit finish_command_fsm (struct interp *cmd_interp) |
1585 | : thread_fsm (cmd_interp) | |
1586 | { | |
1587 | } | |
243a9253 | 1588 | |
46e3ed7f TT |
1589 | bool should_stop (struct thread_info *thread) override; |
1590 | void clean_up (struct thread_info *thread) override; | |
1591 | struct return_value_info *return_value () override; | |
1592 | enum async_reply_reason do_async_reply_reason () override; | |
1593 | }; | |
347bddb7 | 1594 | |
243a9253 PA |
1595 | /* Implementation of the 'should_stop' FSM method for the finish |
1596 | commands. Detects whether the thread stepped out of the function | |
1597 | successfully, and if so, captures the function's return value and | |
1598 | marks the FSM finished. */ | |
1599 | ||
46e3ed7f TT |
1600 | bool |
1601 | finish_command_fsm::should_stop (struct thread_info *tp) | |
243a9253 | 1602 | { |
46e3ed7f | 1603 | struct return_value_info *rv = &return_value_info; |
243a9253 | 1604 | |
46e3ed7f | 1605 | if (function != NULL |
243a9253 | 1606 | && bpstat_find_breakpoint (tp->control.stop_bpstat, |
46e3ed7f | 1607 | breakpoint.get ()) != NULL) |
43ff13b4 | 1608 | { |
243a9253 | 1609 | /* We're done. */ |
46e3ed7f | 1610 | set_finished (); |
bfec99b2 | 1611 | |
46e3ed7f | 1612 | rv->type = TYPE_TARGET_TYPE (SYMBOL_TYPE (function)); |
243a9253 PA |
1613 | if (rv->type == NULL) |
1614 | internal_error (__FILE__, __LINE__, | |
1615 | _("finish_command: function has no target type")); | |
f5871ec0 | 1616 | |
78134374 | 1617 | if (check_typedef (rv->type)->code () != TYPE_CODE_VOID) |
40c549d6 | 1618 | { |
243a9253 PA |
1619 | struct value *func; |
1620 | ||
46e3ed7f | 1621 | func = read_var_value (function, NULL, get_current_frame ()); |
0700e23e | 1622 | rv->value = get_return_value (func, rv->type); |
aca20ec4 KB |
1623 | if (rv->value != NULL) |
1624 | rv->value_history_index = record_latest_value (rv->value); | |
243a9253 PA |
1625 | } |
1626 | } | |
1627 | else if (tp->control.stop_step) | |
1628 | { | |
1629 | /* Finishing from an inline frame, or reverse finishing. In | |
1630 | either case, there's no way to retrieve the return value. */ | |
46e3ed7f | 1631 | set_finished (); |
243a9253 | 1632 | } |
fa4cd53f | 1633 | |
46e3ed7f | 1634 | return true; |
243a9253 | 1635 | } |
40c549d6 | 1636 | |
243a9253 PA |
1637 | /* Implementation of the 'clean_up' FSM method for the finish |
1638 | commands. */ | |
fa4cd53f | 1639 | |
46e3ed7f TT |
1640 | void |
1641 | finish_command_fsm::clean_up (struct thread_info *thread) | |
243a9253 | 1642 | { |
46e3ed7f | 1643 | breakpoint.reset (); |
8980e177 | 1644 | delete_longjmp_breakpoint (thread->global_num); |
243a9253 | 1645 | } |
f941662f | 1646 | |
243a9253 PA |
1647 | /* Implementation of the 'return_value' FSM method for the finish |
1648 | commands. */ | |
1649 | ||
46e3ed7f TT |
1650 | struct return_value_info * |
1651 | finish_command_fsm::return_value () | |
243a9253 | 1652 | { |
46e3ed7f | 1653 | return &return_value_info; |
43ff13b4 JM |
1654 | } |
1655 | ||
243a9253 PA |
1656 | /* Implementation of the 'async_reply_reason' FSM method for the |
1657 | finish commands. */ | |
1658 | ||
46e3ed7f TT |
1659 | enum async_reply_reason |
1660 | finish_command_fsm::do_async_reply_reason () | |
604ead4a | 1661 | { |
243a9253 PA |
1662 | if (execution_direction == EXEC_REVERSE) |
1663 | return EXEC_ASYNC_END_STEPPING_RANGE; | |
1664 | else | |
1665 | return EXEC_ASYNC_FUNCTION_FINISHED; | |
604ead4a PA |
1666 | } |
1667 | ||
b2175913 MS |
1668 | /* finish_backward -- helper function for finish_command. */ |
1669 | ||
1670 | static void | |
243a9253 | 1671 | finish_backward (struct finish_command_fsm *sm) |
b2175913 MS |
1672 | { |
1673 | struct symtab_and_line sal; | |
1674 | struct thread_info *tp = inferior_thread (); | |
1c7819ef | 1675 | CORE_ADDR pc; |
b2175913 | 1676 | CORE_ADDR func_addr; |
b2175913 | 1677 | |
1c7819ef PA |
1678 | pc = get_frame_pc (get_current_frame ()); |
1679 | ||
1680 | if (find_pc_partial_function (pc, NULL, &func_addr, NULL) == 0) | |
1f267ae3 | 1681 | error (_("Cannot find bounds of current function")); |
b2175913 MS |
1682 | |
1683 | sal = find_pc_line (func_addr, 0); | |
1684 | ||
9da8c2a0 | 1685 | tp->control.proceed_to_finish = 1; |
b2175913 MS |
1686 | /* Special case: if we're sitting at the function entry point, |
1687 | then all we need to do is take a reverse singlestep. We | |
1688 | don't need to set a breakpoint, and indeed it would do us | |
1689 | no good to do so. | |
1690 | ||
1691 | Note that this can only happen at frame #0, since there's | |
1692 | no way that a function up the stack can have a return address | |
1693 | that's equal to its entry point. */ | |
1694 | ||
1c7819ef | 1695 | if (sal.pc != pc) |
b2175913 | 1696 | { |
a6d9a66e UW |
1697 | struct frame_info *frame = get_selected_frame (NULL); |
1698 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
9da8c2a0 PA |
1699 | |
1700 | /* Set a step-resume at the function's entry point. Once that's | |
1701 | hit, we'll do one more step backwards. */ | |
51abb421 | 1702 | symtab_and_line sr_sal; |
9da8c2a0 PA |
1703 | sr_sal.pc = sal.pc; |
1704 | sr_sal.pspace = get_frame_program_space (frame); | |
1705 | insert_step_resume_breakpoint_at_sal (gdbarch, | |
1706 | sr_sal, null_frame_id); | |
a6d9a66e | 1707 | |
64ce06e4 | 1708 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
b2175913 MS |
1709 | } |
1710 | else | |
b2175913 | 1711 | { |
9da8c2a0 PA |
1712 | /* We're almost there -- we just need to back up by one more |
1713 | single-step. */ | |
16c381f0 | 1714 | tp->control.step_range_start = tp->control.step_range_end = 1; |
64ce06e4 | 1715 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
b2175913 | 1716 | } |
b2175913 MS |
1717 | } |
1718 | ||
243a9253 PA |
1719 | /* finish_forward -- helper function for finish_command. FRAME is the |
1720 | frame that called the function we're about to step out of. */ | |
b2175913 MS |
1721 | |
1722 | static void | |
243a9253 | 1723 | finish_forward (struct finish_command_fsm *sm, struct frame_info *frame) |
b2175913 | 1724 | { |
def166f6 | 1725 | struct frame_id frame_id = get_frame_id (frame); |
a6d9a66e | 1726 | struct gdbarch *gdbarch = get_frame_arch (frame); |
b2175913 MS |
1727 | struct symtab_and_line sal; |
1728 | struct thread_info *tp = inferior_thread (); | |
b2175913 MS |
1729 | |
1730 | sal = find_pc_line (get_frame_pc (frame), 0); | |
1731 | sal.pc = get_frame_pc (frame); | |
1732 | ||
243a9253 PA |
1733 | sm->breakpoint = set_momentary_breakpoint (gdbarch, sal, |
1734 | get_stack_frame_id (frame), | |
46e3ed7f | 1735 | bp_finish); |
b2175913 | 1736 | |
c70a6932 JK |
1737 | /* set_momentary_breakpoint invalidates FRAME. */ |
1738 | frame = NULL; | |
1739 | ||
def166f6 | 1740 | set_longjmp_breakpoint (tp, frame_id); |
186c406b | 1741 | |
46c03469 | 1742 | /* We want to print return value, please... */ |
16c381f0 | 1743 | tp->control.proceed_to_finish = 1; |
b2175913 | 1744 | |
243a9253 | 1745 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
b2175913 MS |
1746 | } |
1747 | ||
e3b5daf9 MM |
1748 | /* Skip frames for "finish". */ |
1749 | ||
1750 | static struct frame_info * | |
1751 | skip_finish_frames (struct frame_info *frame) | |
1752 | { | |
1753 | struct frame_info *start; | |
1754 | ||
1755 | do | |
1756 | { | |
1757 | start = frame; | |
1758 | ||
1759 | frame = skip_tailcall_frames (frame); | |
1760 | if (frame == NULL) | |
1761 | break; | |
1762 | ||
1763 | frame = skip_unwritable_frames (frame); | |
1764 | if (frame == NULL) | |
1765 | break; | |
1766 | } | |
1767 | while (start != frame); | |
1768 | ||
1769 | return frame; | |
1770 | } | |
1771 | ||
f941662f MK |
1772 | /* "finish": Set a temporary breakpoint at the place the selected |
1773 | frame will return to, then continue. */ | |
c906108c SS |
1774 | |
1775 | static void | |
0b39b52e | 1776 | finish_command (const char *arg, int from_tty) |
c906108c | 1777 | { |
52f0bd74 | 1778 | struct frame_info *frame; |
6c4486e6 | 1779 | int async_exec; |
243a9253 PA |
1780 | struct finish_command_fsm *sm; |
1781 | struct thread_info *tp; | |
43ff13b4 | 1782 | |
4247603b | 1783 | ERROR_NO_INFERIOR; |
573cda03 | 1784 | ensure_not_tfind_mode (); |
4247603b PA |
1785 | ensure_valid_thread (); |
1786 | ensure_not_running (); | |
573cda03 | 1787 | |
f941662f | 1788 | /* Find out whether we must run in the background. */ |
6be9a197 TT |
1789 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (arg, &async_exec); |
1790 | arg = stripped.get (); | |
43ff13b4 | 1791 | |
328d42d8 | 1792 | prepare_execution_command (current_inferior ()->top_target (), async_exec); |
c906108c SS |
1793 | |
1794 | if (arg) | |
8a3fe4f8 | 1795 | error (_("The \"finish\" command does not take any arguments.")); |
c906108c | 1796 | |
206415a3 | 1797 | frame = get_prev_frame (get_selected_frame (_("No selected frame."))); |
c906108c | 1798 | if (frame == 0) |
8a3fe4f8 | 1799 | error (_("\"finish\" not meaningful in the outermost frame.")); |
c906108c | 1800 | |
70509625 | 1801 | clear_proceed_status (0); |
c906108c | 1802 | |
243a9253 PA |
1803 | tp = inferior_thread (); |
1804 | ||
46e3ed7f | 1805 | sm = new finish_command_fsm (command_interp ()); |
243a9253 | 1806 | |
46e3ed7f | 1807 | tp->thread_fsm = sm; |
243a9253 | 1808 | |
edb3359d | 1809 | /* Finishing from an inline frame is completely different. We don't |
243a9253 | 1810 | try to show the "return value" - no way to locate it. */ |
edb3359d DJ |
1811 | if (get_frame_type (get_selected_frame (_("No selected frame."))) |
1812 | == INLINE_FRAME) | |
1813 | { | |
1814 | /* Claim we are stepping in the calling frame. An empty step | |
1815 | range means that we will stop once we aren't in a function | |
1816 | called by that frame. We don't use the magic "1" value for | |
1817 | step_range_end, because then infrun will think this is nexti, | |
1818 | and not step over the rest of this inlined function call. */ | |
29734269 | 1819 | set_step_info (tp, frame, {}); |
16c381f0 JK |
1820 | tp->control.step_range_start = get_frame_pc (frame); |
1821 | tp->control.step_range_end = tp->control.step_range_start; | |
1822 | tp->control.step_over_calls = STEP_OVER_ALL; | |
edb3359d DJ |
1823 | |
1824 | /* Print info on the selected frame, including level number but not | |
1825 | source. */ | |
1826 | if (from_tty) | |
1827 | { | |
1828 | printf_filtered (_("Run till exit from ")); | |
08d72866 | 1829 | print_stack_frame (get_selected_frame (NULL), 1, LOCATION, 0); |
edb3359d DJ |
1830 | } |
1831 | ||
64ce06e4 | 1832 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
edb3359d DJ |
1833 | return; |
1834 | } | |
1835 | ||
c906108c SS |
1836 | /* Find the function we will return from. */ |
1837 | ||
243a9253 | 1838 | sm->function = find_pc_function (get_frame_pc (get_selected_frame (NULL))); |
c906108c | 1839 | |
f941662f MK |
1840 | /* Print info on the selected frame, including level number but not |
1841 | source. */ | |
c906108c SS |
1842 | if (from_tty) |
1843 | { | |
b2175913 MS |
1844 | if (execution_direction == EXEC_REVERSE) |
1845 | printf_filtered (_("Run back to call of ")); | |
1846 | else | |
743649fd | 1847 | { |
243a9253 | 1848 | if (sm->function != NULL && TYPE_NO_RETURN (sm->function->type) |
743649fd MW |
1849 | && !query (_("warning: Function %s does not return normally.\n" |
1850 | "Try to finish anyway? "), | |
987012b8 | 1851 | sm->function->print_name ())) |
743649fd MW |
1852 | error (_("Not confirmed.")); |
1853 | printf_filtered (_("Run till exit from ")); | |
1854 | } | |
b2175913 | 1855 | |
08d72866 | 1856 | print_stack_frame (get_selected_frame (NULL), 1, LOCATION, 0); |
c906108c SS |
1857 | } |
1858 | ||
b2175913 | 1859 | if (execution_direction == EXEC_REVERSE) |
243a9253 | 1860 | finish_backward (sm); |
b2175913 | 1861 | else |
33b4777c | 1862 | { |
e3b5daf9 | 1863 | frame = skip_finish_frames (frame); |
7eb89530 | 1864 | |
33b4777c MM |
1865 | if (frame == NULL) |
1866 | error (_("Cannot find the caller frame.")); | |
1867 | ||
1868 | finish_forward (sm, frame); | |
1869 | } | |
c906108c SS |
1870 | } |
1871 | \f | |
f941662f | 1872 | |
c906108c | 1873 | static void |
1d12d88f | 1874 | info_program_command (const char *args, int from_tty) |
c906108c | 1875 | { |
347bddb7 PA |
1876 | bpstat bs; |
1877 | int num, stat; | |
347bddb7 | 1878 | ptid_t ptid; |
5b6d1e4f | 1879 | process_stratum_target *proc_target; |
c5aa993b | 1880 | |
55f6301a | 1881 | if (!target_has_execution ()) |
c906108c | 1882 | { |
a3f17187 | 1883 | printf_filtered (_("The program being debugged is not being run.\n")); |
c906108c SS |
1884 | return; |
1885 | } | |
1886 | ||
347bddb7 | 1887 | if (non_stop) |
5b6d1e4f PA |
1888 | { |
1889 | ptid = inferior_ptid; | |
1890 | proc_target = current_inferior ()->process_target (); | |
1891 | } | |
347bddb7 | 1892 | else |
5b6d1e4f | 1893 | get_last_target_status (&proc_target, &ptid, nullptr); |
347bddb7 | 1894 | |
9e7f3bbb | 1895 | if (ptid == null_ptid || ptid == minus_one_ptid) |
00431a78 PA |
1896 | error (_("No selected thread.")); |
1897 | ||
5b6d1e4f | 1898 | thread_info *tp = find_thread_ptid (proc_target, ptid); |
00431a78 PA |
1899 | |
1900 | if (tp->state == THREAD_EXITED) | |
347bddb7 | 1901 | error (_("Invalid selected thread.")); |
00431a78 | 1902 | else if (tp->state == THREAD_RUNNING) |
347bddb7 PA |
1903 | error (_("Selected thread is running.")); |
1904 | ||
16c381f0 | 1905 | bs = tp->control.stop_bpstat; |
347bddb7 PA |
1906 | stat = bpstat_num (&bs, &num); |
1907 | ||
c906108c | 1908 | target_files_info (); |
5af949e3 | 1909 | printf_filtered (_("Program stopped at %s.\n"), |
f2ffa92b | 1910 | paddress (target_gdbarch (), tp->suspend.stop_pc)); |
16c381f0 | 1911 | if (tp->control.stop_step) |
a3f17187 | 1912 | printf_filtered (_("It stopped after being stepped.\n")); |
8671a17b | 1913 | else if (stat != 0) |
c906108c SS |
1914 | { |
1915 | /* There may be several breakpoints in the same place, so this | |
dda83cd7 | 1916 | isn't as strange as it seems. */ |
8671a17b | 1917 | while (stat != 0) |
c906108c | 1918 | { |
8671a17b | 1919 | if (stat < 0) |
c906108c | 1920 | { |
3e43a32a MS |
1921 | printf_filtered (_("It stopped at a breakpoint " |
1922 | "that has since been deleted.\n")); | |
c906108c SS |
1923 | } |
1924 | else | |
a3f17187 | 1925 | printf_filtered (_("It stopped at breakpoint %d.\n"), num); |
8671a17b | 1926 | stat = bpstat_num (&bs, &num); |
c906108c SS |
1927 | } |
1928 | } | |
a493e3e2 | 1929 | else if (tp->suspend.stop_signal != GDB_SIGNAL_0) |
c906108c | 1930 | { |
a3f17187 | 1931 | printf_filtered (_("It stopped with signal %s, %s.\n"), |
2ea28649 PA |
1932 | gdb_signal_to_name (tp->suspend.stop_signal), |
1933 | gdb_signal_to_string (tp->suspend.stop_signal)); | |
c906108c SS |
1934 | } |
1935 | ||
0d41ba00 | 1936 | if (from_tty) |
c906108c | 1937 | { |
3e43a32a MS |
1938 | printf_filtered (_("Type \"info stack\" or \"info " |
1939 | "registers\" for more information.\n")); | |
c906108c SS |
1940 | } |
1941 | } | |
1942 | \f | |
1943 | static void | |
69f476a3 | 1944 | environment_info (const char *var, int from_tty) |
c906108c SS |
1945 | { |
1946 | if (var) | |
1947 | { | |
9a6c7d9c | 1948 | const char *val = current_inferior ()->environment.get (var); |
abbb1732 | 1949 | |
c906108c SS |
1950 | if (val) |
1951 | { | |
1952 | puts_filtered (var); | |
1953 | puts_filtered (" = "); | |
1954 | puts_filtered (val); | |
1955 | puts_filtered ("\n"); | |
1956 | } | |
1957 | else | |
1958 | { | |
1959 | puts_filtered ("Environment variable \""); | |
1960 | puts_filtered (var); | |
1961 | puts_filtered ("\" not defined.\n"); | |
1962 | } | |
1963 | } | |
1964 | else | |
1965 | { | |
9a6c7d9c | 1966 | char **envp = current_inferior ()->environment.envp (); |
abbb1732 | 1967 | |
9a6c7d9c | 1968 | for (int idx = 0; envp[idx] != NULL; ++idx) |
c906108c | 1969 | { |
9a6c7d9c | 1970 | puts_filtered (envp[idx]); |
c906108c SS |
1971 | puts_filtered ("\n"); |
1972 | } | |
1973 | } | |
1974 | } | |
1975 | ||
1976 | static void | |
69f476a3 | 1977 | set_environment_command (const char *arg, int from_tty) |
c906108c | 1978 | { |
69f476a3 | 1979 | const char *p, *val; |
c906108c SS |
1980 | int nullset = 0; |
1981 | ||
1982 | if (arg == 0) | |
e2e0b3e5 | 1983 | error_no_arg (_("environment variable and value")); |
c906108c | 1984 | |
85102364 | 1985 | /* Find separation between variable name and value. */ |
c906108c SS |
1986 | p = (char *) strchr (arg, '='); |
1987 | val = (char *) strchr (arg, ' '); | |
1988 | ||
1989 | if (p != 0 && val != 0) | |
1990 | { | |
1991 | /* We have both a space and an equals. If the space is before the | |
dda83cd7 SM |
1992 | equals, walk forward over the spaces til we see a nonspace |
1993 | (possibly the equals). */ | |
c906108c SS |
1994 | if (p > val) |
1995 | while (*val == ' ') | |
1996 | val++; | |
1997 | ||
1998 | /* Now if the = is after the char following the spaces, | |
dda83cd7 | 1999 | take the char following the spaces. */ |
c906108c SS |
2000 | if (p > val) |
2001 | p = val - 1; | |
2002 | } | |
2003 | else if (val != 0 && p == 0) | |
2004 | p = val; | |
2005 | ||
2006 | if (p == arg) | |
e2e0b3e5 | 2007 | error_no_arg (_("environment variable to set")); |
c906108c SS |
2008 | |
2009 | if (p == 0 || p[1] == 0) | |
2010 | { | |
2011 | nullset = 1; | |
2012 | if (p == 0) | |
1777feb0 | 2013 | p = arg + strlen (arg); /* So that savestring below will work. */ |
c906108c SS |
2014 | } |
2015 | else | |
2016 | { | |
1777feb0 | 2017 | /* Not setting variable value to null. */ |
c906108c SS |
2018 | val = p + 1; |
2019 | while (*val == ' ' || *val == '\t') | |
2020 | val++; | |
2021 | } | |
2022 | ||
c5aa993b JM |
2023 | while (p != arg && (p[-1] == ' ' || p[-1] == '\t')) |
2024 | p--; | |
c906108c | 2025 | |
69f476a3 | 2026 | std::string var (arg, p - arg); |
c906108c SS |
2027 | if (nullset) |
2028 | { | |
3e43a32a MS |
2029 | printf_filtered (_("Setting environment variable " |
2030 | "\"%s\" to null value.\n"), | |
69f476a3 TT |
2031 | var.c_str ()); |
2032 | current_inferior ()->environment.set (var.c_str (), ""); | |
c906108c SS |
2033 | } |
2034 | else | |
69f476a3 | 2035 | current_inferior ()->environment.set (var.c_str (), val); |
c906108c SS |
2036 | } |
2037 | ||
2038 | static void | |
69f476a3 | 2039 | unset_environment_command (const char *var, int from_tty) |
c906108c SS |
2040 | { |
2041 | if (var == 0) | |
2042 | { | |
2043 | /* If there is no argument, delete all environment variables. | |
dda83cd7 | 2044 | Ask for confirmation if reading from the terminal. */ |
e2e0b3e5 | 2045 | if (!from_tty || query (_("Delete all environment variables? "))) |
206726fb | 2046 | current_inferior ()->environment.clear (); |
c906108c SS |
2047 | } |
2048 | else | |
9a6c7d9c | 2049 | current_inferior ()->environment.unset (var); |
c906108c SS |
2050 | } |
2051 | ||
1777feb0 | 2052 | /* Handle the execution path (PATH variable). */ |
c906108c SS |
2053 | |
2054 | static const char path_var_name[] = "PATH"; | |
2055 | ||
c906108c | 2056 | static void |
69f476a3 | 2057 | path_info (const char *args, int from_tty) |
c906108c SS |
2058 | { |
2059 | puts_filtered ("Executable and object file path: "); | |
9a6c7d9c | 2060 | puts_filtered (current_inferior ()->environment.get (path_var_name)); |
c906108c SS |
2061 | puts_filtered ("\n"); |
2062 | } | |
2063 | ||
2064 | /* Add zero or more directories to the front of the execution path. */ | |
2065 | ||
2066 | static void | |
0b39b52e | 2067 | path_command (const char *dirname, int from_tty) |
c906108c SS |
2068 | { |
2069 | char *exec_path; | |
a121b7c1 | 2070 | const char *env; |
abbb1732 | 2071 | |
c906108c | 2072 | dont_repeat (); |
9a6c7d9c | 2073 | env = current_inferior ()->environment.get (path_var_name); |
1777feb0 | 2074 | /* Can be null if path is not set. */ |
c906108c SS |
2075 | if (!env) |
2076 | env = ""; | |
4fcf66da | 2077 | exec_path = xstrdup (env); |
c906108c | 2078 | mod_path (dirname, &exec_path); |
9a6c7d9c | 2079 | current_inferior ()->environment.set (path_var_name, exec_path); |
b8c9b27d | 2080 | xfree (exec_path); |
c906108c | 2081 | if (from_tty) |
cafb3438 | 2082 | path_info (NULL, from_tty); |
c906108c | 2083 | } |
c906108c | 2084 | \f |
c5aa993b | 2085 | |
e813d34a RK |
2086 | static void |
2087 | pad_to_column (string_file &stream, int col) | |
2088 | { | |
2089 | /* At least one space must be printed to separate columns. */ | |
2090 | stream.putc (' '); | |
2091 | const int size = stream.size (); | |
2092 | if (size < col) | |
2093 | stream.puts (n_spaces (col - size)); | |
2094 | } | |
2095 | ||
1292279a PA |
2096 | /* Print out the register NAME with value VAL, to FILE, in the default |
2097 | fashion. */ | |
2098 | ||
2099 | static void | |
2100 | default_print_one_register_info (struct ui_file *file, | |
2101 | const char *name, | |
2102 | struct value *val) | |
2103 | { | |
2104 | struct type *regtype = value_type (val); | |
f69d9aef | 2105 | int print_raw_format; |
e813d34a RK |
2106 | string_file format_stream; |
2107 | enum tab_stops | |
2108 | { | |
2109 | value_column_1 = 15, | |
2110 | /* Give enough room for "0x", 16 hex digits and two spaces in | |
dda83cd7 | 2111 | preceding column. */ |
e813d34a RK |
2112 | value_column_2 = value_column_1 + 2 + 16 + 2, |
2113 | }; | |
1292279a | 2114 | |
e813d34a RK |
2115 | format_stream.puts (name); |
2116 | pad_to_column (format_stream, value_column_1); | |
1292279a | 2117 | |
f69d9aef AB |
2118 | print_raw_format = (value_entirely_available (val) |
2119 | && !value_optimized_out (val)); | |
1292279a PA |
2120 | |
2121 | /* If virtual format is floating, print it that way, and in raw | |
2122 | hex. */ | |
78134374 SM |
2123 | if (regtype->code () == TYPE_CODE_FLT |
2124 | || regtype->code () == TYPE_CODE_DECFLOAT) | |
1292279a | 2125 | { |
1292279a PA |
2126 | struct value_print_options opts; |
2127 | const gdb_byte *valaddr = value_contents_for_printing (val); | |
34877895 | 2128 | enum bfd_endian byte_order = type_byte_order (regtype); |
1292279a PA |
2129 | |
2130 | get_user_print_options (&opts); | |
2131 | opts.deref_ref = 1; | |
2132 | ||
3444c526 | 2133 | common_val_print (val, &format_stream, 0, &opts, current_language); |
1292279a | 2134 | |
f69d9aef AB |
2135 | if (print_raw_format) |
2136 | { | |
e813d34a RK |
2137 | pad_to_column (format_stream, value_column_2); |
2138 | format_stream.puts ("(raw "); | |
2139 | print_hex_chars (&format_stream, valaddr, TYPE_LENGTH (regtype), | |
2140 | byte_order, true); | |
2141 | format_stream.putc (')'); | |
f69d9aef | 2142 | } |
1292279a PA |
2143 | } |
2144 | else | |
2145 | { | |
2146 | struct value_print_options opts; | |
2147 | ||
2148 | /* Print the register in hex. */ | |
2149 | get_formatted_print_options (&opts, 'x'); | |
2150 | opts.deref_ref = 1; | |
3444c526 | 2151 | common_val_print (val, &format_stream, 0, &opts, current_language); |
1292279a PA |
2152 | /* If not a vector register, print it also according to its |
2153 | natural format. */ | |
bd63c870 | 2154 | if (print_raw_format && regtype->is_vector () == 0) |
1292279a | 2155 | { |
e813d34a | 2156 | pad_to_column (format_stream, value_column_2); |
1292279a PA |
2157 | get_user_print_options (&opts); |
2158 | opts.deref_ref = 1; | |
3444c526 | 2159 | common_val_print (val, &format_stream, 0, &opts, current_language); |
1292279a PA |
2160 | } |
2161 | } | |
2162 | ||
e813d34a | 2163 | fputs_filtered (format_stream.c_str (), file); |
1292279a PA |
2164 | fprintf_filtered (file, "\n"); |
2165 | } | |
2166 | ||
1777feb0 | 2167 | /* Print out the machine register regnum. If regnum is -1, print all |
0ab7a791 AC |
2168 | registers (print_all == 1) or all non-float and non-vector |
2169 | registers (print_all == 0). | |
c906108c SS |
2170 | |
2171 | For most machines, having all_registers_info() print the | |
0ab7a791 AC |
2172 | register(s) one per line is good enough. If a different format is |
2173 | required, (eg, for MIPS or Pyramid 90x, which both have lots of | |
2174 | regs), or there is an existing convention for showing all the | |
2175 | registers, define the architecture method PRINT_REGISTERS_INFO to | |
2176 | provide that format. */ | |
c906108c | 2177 | |
666e11c5 | 2178 | void |
0ab7a791 AC |
2179 | default_print_registers_info (struct gdbarch *gdbarch, |
2180 | struct ui_file *file, | |
2181 | struct frame_info *frame, | |
2182 | int regnum, int print_all) | |
c906108c | 2183 | { |
0ab7a791 | 2184 | int i; |
f6efe3f8 | 2185 | const int numregs = gdbarch_num_cooked_regs (gdbarch); |
0ab7a791 | 2186 | |
c906108c SS |
2187 | for (i = 0; i < numregs; i++) |
2188 | { | |
4782dc19 | 2189 | /* Decide between printing all regs, non-float / vector regs, or |
dda83cd7 | 2190 | specific reg. */ |
c5aa993b JM |
2191 | if (regnum == -1) |
2192 | { | |
f9418c0f | 2193 | if (print_all) |
4782dc19 | 2194 | { |
f9418c0f | 2195 | if (!gdbarch_register_reggroup_p (gdbarch, i, all_reggroup)) |
4782dc19 | 2196 | continue; |
f9418c0f AC |
2197 | } |
2198 | else | |
2199 | { | |
2200 | if (!gdbarch_register_reggroup_p (gdbarch, i, general_reggroup)) | |
4782dc19 AC |
2201 | continue; |
2202 | } | |
c5aa993b JM |
2203 | } |
2204 | else | |
2205 | { | |
2206 | if (i != regnum) | |
2207 | continue; | |
2208 | } | |
c906108c SS |
2209 | |
2210 | /* If the register name is empty, it is undefined for this | |
dda83cd7 | 2211 | processor, so don't display anything. */ |
a4bd449d UW |
2212 | if (gdbarch_register_name (gdbarch, i) == NULL |
2213 | || *(gdbarch_register_name (gdbarch, i)) == '\0') | |
c906108c SS |
2214 | continue; |
2215 | ||
1292279a PA |
2216 | default_print_one_register_info (file, |
2217 | gdbarch_register_name (gdbarch, i), | |
901461f8 | 2218 | value_of_register (i, frame)); |
c906108c SS |
2219 | } |
2220 | } | |
c906108c | 2221 | |
c906108c | 2222 | void |
1d12d88f | 2223 | registers_info (const char *addr_exp, int fpregs) |
c906108c | 2224 | { |
206415a3 | 2225 | struct frame_info *frame; |
a4bd449d | 2226 | struct gdbarch *gdbarch; |
c906108c | 2227 | |
9dccd06e | 2228 | if (!target_has_registers ()) |
8a3fe4f8 | 2229 | error (_("The program has no registers now.")); |
206415a3 | 2230 | frame = get_selected_frame (NULL); |
a4bd449d | 2231 | gdbarch = get_frame_arch (frame); |
c906108c SS |
2232 | |
2233 | if (!addr_exp) | |
2234 | { | |
a4bd449d | 2235 | gdbarch_print_registers_info (gdbarch, gdb_stdout, |
206415a3 | 2236 | frame, -1, fpregs); |
c906108c SS |
2237 | return; |
2238 | } | |
2239 | ||
f9418c0f | 2240 | while (*addr_exp != '\0') |
c5aa993b | 2241 | { |
1d12d88f | 2242 | const char *start; |
f9418c0f | 2243 | const char *end; |
c906108c | 2244 | |
529480d0 KS |
2245 | /* Skip leading white space. */ |
2246 | addr_exp = skip_spaces (addr_exp); | |
c906108c | 2247 | |
f9418c0f | 2248 | /* Discard any leading ``$''. Check that there is something |
dda83cd7 | 2249 | resembling a register following it. */ |
f9418c0f AC |
2250 | if (addr_exp[0] == '$') |
2251 | addr_exp++; | |
2252 | if (isspace ((*addr_exp)) || (*addr_exp) == '\0') | |
8a3fe4f8 | 2253 | error (_("Missing register name")); |
c906108c | 2254 | |
f9418c0f AC |
2255 | /* Find the start/end of this register name/num/group. */ |
2256 | start = addr_exp; | |
2257 | while ((*addr_exp) != '\0' && !isspace ((*addr_exp))) | |
2258 | addr_exp++; | |
2259 | end = addr_exp; | |
ad842144 | 2260 | |
f9418c0f AC |
2261 | /* Figure out what we've found and display it. */ |
2262 | ||
2263 | /* A register name? */ | |
2264 | { | |
029a67e4 | 2265 | int regnum = user_reg_map_name_to_regnum (gdbarch, start, end - start); |
abbb1732 | 2266 | |
f9418c0f AC |
2267 | if (regnum >= 0) |
2268 | { | |
ad842144 MR |
2269 | /* User registers lie completely outside of the range of |
2270 | normal registers. Catch them early so that the target | |
2271 | never sees them. */ | |
f6efe3f8 | 2272 | if (regnum >= gdbarch_num_cooked_regs (gdbarch)) |
ad842144 | 2273 | { |
1292279a PA |
2274 | struct value *regval = value_of_user_reg (regnum, frame); |
2275 | const char *regname = user_reg_map_regnum_to_name (gdbarch, | |
2276 | regnum); | |
2277 | ||
2278 | /* Print in the same fashion | |
2279 | gdbarch_print_registers_info's default | |
2280 | implementation prints. */ | |
2281 | default_print_one_register_info (gdb_stdout, | |
2282 | regname, | |
2283 | regval); | |
ad842144 MR |
2284 | } |
2285 | else | |
2286 | gdbarch_print_registers_info (gdbarch, gdb_stdout, | |
2287 | frame, regnum, fpregs); | |
f9418c0f AC |
2288 | continue; |
2289 | } | |
2290 | } | |
ad842144 | 2291 | |
f9418c0f AC |
2292 | /* A register group? */ |
2293 | { | |
6c7d17ba | 2294 | struct reggroup *group; |
abbb1732 | 2295 | |
a4bd449d | 2296 | for (group = reggroup_next (gdbarch, NULL); |
6c7d17ba | 2297 | group != NULL; |
a4bd449d | 2298 | group = reggroup_next (gdbarch, group)) |
f9418c0f AC |
2299 | { |
2300 | /* Don't bother with a length check. Should the user | |
2301 | enter a short register group name, go with the first | |
2302 | group that matches. */ | |
6c7d17ba | 2303 | if (strncmp (start, reggroup_name (group), end - start) == 0) |
f9418c0f AC |
2304 | break; |
2305 | } | |
6c7d17ba | 2306 | if (group != NULL) |
f9418c0f AC |
2307 | { |
2308 | int regnum; | |
abbb1732 | 2309 | |
f57d151a | 2310 | for (regnum = 0; |
f6efe3f8 | 2311 | regnum < gdbarch_num_cooked_regs (gdbarch); |
f57d151a | 2312 | regnum++) |
f9418c0f | 2313 | { |
a4bd449d UW |
2314 | if (gdbarch_register_reggroup_p (gdbarch, regnum, group)) |
2315 | gdbarch_print_registers_info (gdbarch, | |
206415a3 | 2316 | gdb_stdout, frame, |
f9418c0f AC |
2317 | regnum, fpregs); |
2318 | } | |
2319 | continue; | |
2320 | } | |
2321 | } | |
c906108c | 2322 | |
f9418c0f | 2323 | /* Nothing matched. */ |
8a3fe4f8 | 2324 | error (_("Invalid register `%.*s'"), (int) (end - start), start); |
c5aa993b | 2325 | } |
c906108c SS |
2326 | } |
2327 | ||
1dd5fedc | 2328 | static void |
1d12d88f | 2329 | info_all_registers_command (const char *addr_exp, int from_tty) |
c906108c SS |
2330 | { |
2331 | registers_info (addr_exp, 1); | |
2332 | } | |
2333 | ||
a58dd373 | 2334 | static void |
1d12d88f | 2335 | info_registers_command (const char *addr_exp, int from_tty) |
c906108c SS |
2336 | { |
2337 | registers_info (addr_exp, 0); | |
2338 | } | |
e76f1f2e AC |
2339 | |
2340 | static void | |
d80b854b | 2341 | print_vector_info (struct ui_file *file, |
e76f1f2e AC |
2342 | struct frame_info *frame, const char *args) |
2343 | { | |
d80b854b UW |
2344 | struct gdbarch *gdbarch = get_frame_arch (frame); |
2345 | ||
e76f1f2e AC |
2346 | if (gdbarch_print_vector_info_p (gdbarch)) |
2347 | gdbarch_print_vector_info (gdbarch, file, frame, args); | |
2348 | else | |
2349 | { | |
2350 | int regnum; | |
2351 | int printed_something = 0; | |
ab4327e0 | 2352 | |
f6efe3f8 | 2353 | for (regnum = 0; regnum < gdbarch_num_cooked_regs (gdbarch); regnum++) |
e76f1f2e | 2354 | { |
f9418c0f | 2355 | if (gdbarch_register_reggroup_p (gdbarch, regnum, vector_reggroup)) |
e76f1f2e AC |
2356 | { |
2357 | printed_something = 1; | |
e76f1f2e | 2358 | gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1); |
e76f1f2e AC |
2359 | } |
2360 | } | |
2361 | if (!printed_something) | |
2362 | fprintf_filtered (file, "No vector information\n"); | |
2363 | } | |
2364 | } | |
2365 | ||
2366 | static void | |
1d12d88f | 2367 | info_vector_command (const char *args, int from_tty) |
e76f1f2e | 2368 | { |
9dccd06e | 2369 | if (!target_has_registers ()) |
206415a3 DJ |
2370 | error (_("The program has no registers now.")); |
2371 | ||
d80b854b | 2372 | print_vector_info (gdb_stdout, get_selected_frame (NULL), args); |
e76f1f2e | 2373 | } |
c906108c | 2374 | \f |
5fd62852 PA |
2375 | /* Kill the inferior process. Make us have no inferior. */ |
2376 | ||
2377 | static void | |
981a3fb3 | 2378 | kill_command (const char *arg, int from_tty) |
5fd62852 PA |
2379 | { |
2380 | /* FIXME: This should not really be inferior_ptid (or target_has_execution). | |
2381 | It should be a distinct flag that indicates that a target is active, cuz | |
1777feb0 | 2382 | some targets don't have processes! */ |
5fd62852 | 2383 | |
d7e15655 | 2384 | if (inferior_ptid == null_ptid) |
5fd62852 PA |
2385 | error (_("The program is not being run.")); |
2386 | if (!query (_("Kill the program being debugged? "))) | |
2387 | error (_("Not confirmed.")); | |
f67c0c91 | 2388 | |
249b5733 PA |
2389 | int pid = current_inferior ()->pid; |
2390 | /* Save the pid as a string before killing the inferior, since that | |
2391 | may unpush the current target, and we need the string after. */ | |
f2907e49 | 2392 | std::string pid_str = target_pid_to_str (ptid_t (pid)); |
f67c0c91 SDJ |
2393 | int infnum = current_inferior ()->num; |
2394 | ||
5fd62852 PA |
2395 | target_kill (); |
2396 | ||
f67c0c91 | 2397 | if (print_inferior_events) |
249b5733 | 2398 | printf_unfiltered (_("[Inferior %d (%s) killed]\n"), |
f67c0c91 SDJ |
2399 | infnum, pid_str.c_str ()); |
2400 | ||
5fd62852 PA |
2401 | bfd_cache_close_all (); |
2402 | } | |
c5aa993b | 2403 | |
08036331 | 2404 | /* Used in `attach&' command. Proceed threads of inferior INF iff |
74531fed | 2405 | they stopped due to debugger request, and when they did, they |
08036331 PA |
2406 | reported a clean stop (GDB_SIGNAL_0). Do not proceed threads that |
2407 | have been explicitly been told to stop. */ | |
74531fed PA |
2408 | |
2409 | static void | |
08036331 | 2410 | proceed_after_attach (inferior *inf) |
74531fed PA |
2411 | { |
2412 | /* Don't error out if the current thread is running, because | |
2413 | there may be other stopped threads. */ | |
74531fed PA |
2414 | |
2415 | /* Backup current thread and selected frame. */ | |
5ed8105e | 2416 | scoped_restore_current_thread restore_thread; |
74531fed | 2417 | |
08036331 PA |
2418 | for (thread_info *thread : inf->non_exited_threads ()) |
2419 | if (!thread->executing | |
2420 | && !thread->stop_requested | |
2421 | && thread->suspend.stop_signal == GDB_SIGNAL_0) | |
2422 | { | |
2423 | switch_to_thread (thread); | |
2424 | clear_proceed_status (0); | |
2425 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); | |
2426 | } | |
74531fed PA |
2427 | } |
2428 | ||
6efcd9a8 | 2429 | /* See inferior.h. */ |
c906108c | 2430 | |
6efcd9a8 PA |
2431 | void |
2432 | setup_inferior (int from_tty) | |
9356cf8d | 2433 | { |
d6b48e9c | 2434 | struct inferior *inferior; |
9356cf8d | 2435 | |
d6b48e9c | 2436 | inferior = current_inferior (); |
6efcd9a8 | 2437 | inferior->needs_setup = 0; |
9356cf8d PA |
2438 | |
2439 | /* If no exec file is yet known, try to determine it from the | |
2440 | process itself. */ | |
a10de604 | 2441 | if (get_exec_file (0) == NULL) |
e99b03dc | 2442 | exec_file_locate_attach (inferior_ptid.pid (), 1, from_tty); |
9356cf8d PA |
2443 | else |
2444 | { | |
2445 | reopen_exec_file (); | |
2446 | reread_symbols (); | |
2447 | } | |
2448 | ||
2449 | /* Take any necessary post-attaching actions for this platform. */ | |
e99b03dc | 2450 | target_post_attach (inferior_ptid.pid ()); |
9356cf8d | 2451 | |
a7aba266 | 2452 | post_create_inferior (from_tty); |
6efcd9a8 PA |
2453 | } |
2454 | ||
2455 | /* What to do after the first program stops after attaching. */ | |
2456 | enum attach_post_wait_mode | |
2457 | { | |
2458 | /* Do nothing. Leaves threads as they are. */ | |
2459 | ATTACH_POST_WAIT_NOTHING, | |
2460 | ||
2461 | /* Re-resume threads that are marked running. */ | |
2462 | ATTACH_POST_WAIT_RESUME, | |
2463 | ||
2464 | /* Stop all threads. */ | |
2465 | ATTACH_POST_WAIT_STOP, | |
2466 | }; | |
2467 | ||
2468 | /* Called after we've attached to a process and we've seen it stop for | |
6fee5eee TBA |
2469 | the first time. Resume, stop, or don't touch the threads according |
2470 | to MODE. */ | |
6efcd9a8 PA |
2471 | |
2472 | static void | |
27d0790a | 2473 | attach_post_wait (int from_tty, enum attach_post_wait_mode mode) |
6efcd9a8 PA |
2474 | { |
2475 | struct inferior *inferior; | |
9356cf8d | 2476 | |
6efcd9a8 PA |
2477 | inferior = current_inferior (); |
2478 | inferior->control.stop_soon = NO_STOP_QUIETLY; | |
2479 | ||
2480 | if (inferior->needs_setup) | |
2481 | setup_inferior (from_tty); | |
2482 | ||
2483 | if (mode == ATTACH_POST_WAIT_RESUME) | |
74531fed PA |
2484 | { |
2485 | /* The user requested an `attach&', so be sure to leave threads | |
2486 | that didn't get a signal running. */ | |
2487 | ||
6fee5eee | 2488 | /* Immediately resume all suspended threads of this inferior, |
74531fed PA |
2489 | and this inferior only. This should have no effect on |
2490 | already running threads. If a thread has been stopped with a | |
2491 | signal, leave it be. */ | |
2492 | if (non_stop) | |
08036331 | 2493 | proceed_after_attach (inferior); |
74531fed PA |
2494 | else |
2495 | { | |
a493e3e2 | 2496 | if (inferior_thread ()->suspend.stop_signal == GDB_SIGNAL_0) |
74531fed | 2497 | { |
70509625 | 2498 | clear_proceed_status (0); |
64ce06e4 | 2499 | proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT); |
74531fed PA |
2500 | } |
2501 | } | |
2502 | } | |
6efcd9a8 | 2503 | else if (mode == ATTACH_POST_WAIT_STOP) |
9356cf8d | 2504 | { |
74531fed PA |
2505 | /* The user requested a plain `attach', so be sure to leave |
2506 | the inferior stopped. */ | |
2507 | ||
74531fed PA |
2508 | /* At least the current thread is already stopped. */ |
2509 | ||
2510 | /* In all-stop, by definition, all threads have to be already | |
2511 | stopped at this point. In non-stop, however, although the | |
2512 | selected thread is stopped, others may still be executing. | |
2513 | Be sure to explicitly stop all threads of the process. This | |
2514 | should have no effect on already stopped threads. */ | |
066f6b6e | 2515 | if (non_stop) |
f2907e49 | 2516 | target_stop (ptid_t (inferior->pid)); |
066f6b6e PA |
2517 | else if (target_is_non_stop_p ()) |
2518 | { | |
066f6b6e | 2519 | struct thread_info *lowest = inferior_thread (); |
066f6b6e PA |
2520 | |
2521 | stop_all_threads (); | |
2522 | ||
2523 | /* It's not defined which thread will report the attach | |
2524 | stop. For consistency, always select the thread with | |
2525 | lowest GDB number, which should be the main thread, if it | |
2526 | still exists. */ | |
08036331 PA |
2527 | for (thread_info *thread : current_inferior ()->non_exited_threads ()) |
2528 | if (thread->inf->num < lowest->inf->num | |
2529 | || thread->per_inf_num < lowest->per_inf_num) | |
2530 | lowest = thread; | |
066f6b6e | 2531 | |
00431a78 | 2532 | switch_to_thread (lowest); |
066f6b6e | 2533 | } |
74531fed PA |
2534 | |
2535 | /* Tell the user/frontend where we're stopped. */ | |
9356cf8d PA |
2536 | normal_stop (); |
2537 | if (deprecated_attach_hook) | |
2538 | deprecated_attach_hook (); | |
2539 | } | |
2540 | } | |
2541 | ||
6efcd9a8 PA |
2542 | /* "attach" command entry point. Takes a program started up outside |
2543 | of gdb and ``attaches'' to it. This stops it cold in its tracks | |
2544 | and allows us to start debugging it. */ | |
2545 | ||
c906108c | 2546 | void |
0b39b52e | 2547 | attach_command (const char *args, int from_tty) |
c906108c | 2548 | { |
6c4486e6 | 2549 | int async_exec; |
b3ccfe11 | 2550 | struct target_ops *attach_target; |
6efcd9a8 PA |
2551 | struct inferior *inferior = current_inferior (); |
2552 | enum attach_post_wait_mode mode; | |
c906108c | 2553 | |
c5aa993b | 2554 | dont_repeat (); /* Not for the faint of heart */ |
c906108c | 2555 | |
1192f124 SM |
2556 | scoped_disable_commit_resumed disable_commit_resumed ("attaching"); |
2557 | ||
f5656ead | 2558 | if (gdbarch_has_global_solist (target_gdbarch ())) |
2567c7d9 PA |
2559 | /* Don't complain if all processes share the same symbol |
2560 | space. */ | |
8a305172 | 2561 | ; |
55f6301a | 2562 | else if (target_has_execution ()) |
c906108c | 2563 | { |
9e2f0ad4 | 2564 | if (query (_("A program is being debugged already. Kill it? "))) |
c906108c SS |
2565 | target_kill (); |
2566 | else | |
8a3fe4f8 | 2567 | error (_("Not killed.")); |
c906108c SS |
2568 | } |
2569 | ||
fd79ecee DJ |
2570 | /* Clean up any leftovers from other runs. Some other things from |
2571 | this function should probably be moved into target_pre_inferior. */ | |
2572 | target_pre_inferior (from_tty); | |
2573 | ||
6be9a197 TT |
2574 | gdb::unique_xmalloc_ptr<char> stripped = strip_bg_char (args, &async_exec); |
2575 | args = stripped.get (); | |
8bc2fe48 | 2576 | |
b3ccfe11 TT |
2577 | attach_target = find_attach_target (); |
2578 | ||
8bc2fe48 PA |
2579 | prepare_execution_command (attach_target, async_exec); |
2580 | ||
f6ac5f3d | 2581 | if (non_stop && !attach_target->supports_non_stop ()) |
9908b566 VP |
2582 | error (_("Cannot attach to this target in non-stop mode")); |
2583 | ||
f6ac5f3d | 2584 | attach_target->attach (args, from_tty); |
b3ccfe11 TT |
2585 | /* to_attach should push the target, so after this point we |
2586 | shouldn't refer to attach_target again. */ | |
2587 | attach_target = NULL; | |
c906108c SS |
2588 | |
2589 | /* Set up the "saved terminal modes" of the inferior | |
2590 | based on what modes we are starting it with. */ | |
223ffa71 | 2591 | target_terminal::init (); |
c906108c | 2592 | |
7180e04a PA |
2593 | /* Install inferior's terminal modes. This may look like a no-op, |
2594 | as we've just saved them above, however, this does more than | |
2595 | restore terminal settings: | |
2596 | ||
2597 | - installs a SIGINT handler that forwards SIGINT to the inferior. | |
2598 | Otherwise a Ctrl-C pressed just while waiting for the initial | |
2599 | stop would end up as a spurious Quit. | |
2600 | ||
2601 | - removes stdin from the event loop, which we need if attaching | |
2602 | in the foreground, otherwise on targets that report an initial | |
2603 | stop on attach (which are most) we'd process input/commands | |
2604 | while we're in the event loop waiting for that stop. That is, | |
2605 | before the attach continuation runs and the command is really | |
2606 | finished. */ | |
223ffa71 | 2607 | target_terminal::inferior (); |
7180e04a | 2608 | |
c906108c SS |
2609 | /* Set up execution context to know that we should return from |
2610 | wait_for_inferior as soon as the target reports a stop. */ | |
2611 | init_wait_for_inferior (); | |
c906108c | 2612 | |
6efcd9a8 PA |
2613 | inferior->needs_setup = 1; |
2614 | ||
fbea99ea | 2615 | if (target_is_non_stop_p ()) |
74531fed PA |
2616 | { |
2617 | /* If we find that the current thread isn't stopped, explicitly | |
2618 | do so now, because we're going to install breakpoints and | |
2619 | poke at memory. */ | |
2620 | ||
2621 | if (async_exec) | |
2622 | /* The user requested an `attach&'; stop just one thread. */ | |
2623 | target_stop (inferior_ptid); | |
2624 | else | |
2625 | /* The user requested an `attach', so stop all threads of this | |
2626 | inferior. */ | |
e99b03dc | 2627 | target_stop (ptid_t (inferior_ptid.pid ())); |
74531fed PA |
2628 | } |
2629 | ||
a2fedca9 PW |
2630 | /* Check for exec file mismatch, and let the user solve it. */ |
2631 | validate_exec_file (from_tty); | |
2632 | ||
6efcd9a8 PA |
2633 | mode = async_exec ? ATTACH_POST_WAIT_RESUME : ATTACH_POST_WAIT_STOP; |
2634 | ||
dc177b7a PA |
2635 | /* Some system don't generate traps when attaching to inferior. |
2636 | E.g. Mach 3 or GNU hurd. */ | |
f6ac5f3d | 2637 | if (!target_attach_no_wait ()) |
c5aa993b | 2638 | { |
1777feb0 | 2639 | /* Careful here. See comments in inferior.h. Basically some |
dc177b7a PA |
2640 | OSes don't ignore SIGSTOPs on continue requests anymore. We |
2641 | need a way for handle_inferior_event to reset the stop_signal | |
2642 | variable after an attach, and this is what | |
2643 | STOP_QUIETLY_NO_SIGSTOP is for. */ | |
16c381f0 | 2644 | inferior->control.stop_soon = STOP_QUIETLY_NO_SIGSTOP; |
c5aa993b | 2645 | |
3b12939d | 2646 | /* Wait for stop. */ |
4efeb0d3 | 2647 | inferior->add_continuation ([=] () |
c4c493de TBA |
2648 | { |
2649 | attach_post_wait (from_tty, mode); | |
2650 | }); | |
0b333c5e | 2651 | |
5b6d1e4f PA |
2652 | /* Let infrun consider waiting for events out of this |
2653 | target. */ | |
2654 | inferior->process_target ()->threads_executing = true; | |
2655 | ||
0b333c5e PA |
2656 | if (!target_is_async_p ()) |
2657 | mark_infrun_async_event_handler (); | |
2658 | return; | |
dc177b7a | 2659 | } |
5b6d1e4f | 2660 | else |
27d0790a | 2661 | attach_post_wait (from_tty, mode); |
1192f124 SM |
2662 | |
2663 | disable_commit_resumed.reset_and_commit (); | |
c906108c SS |
2664 | } |
2665 | ||
1941c569 PA |
2666 | /* We had just found out that the target was already attached to an |
2667 | inferior. PTID points at a thread of this new inferior, that is | |
2668 | the most likely to be stopped right now, but not necessarily so. | |
2669 | The new inferior is assumed to be already added to the inferior | |
2670 | list at this point. If LEAVE_RUNNING, then leave the threads of | |
2671 | this inferior running, except those we've explicitly seen reported | |
2672 | as stopped. */ | |
2673 | ||
2674 | void | |
00431a78 | 2675 | notice_new_inferior (thread_info *thr, int leave_running, int from_tty) |
1941c569 | 2676 | { |
5ed8105e PA |
2677 | enum attach_post_wait_mode mode |
2678 | = leave_running ? ATTACH_POST_WAIT_RESUME : ATTACH_POST_WAIT_NOTHING; | |
1941c569 | 2679 | |
5ed8105e | 2680 | gdb::optional<scoped_restore_current_thread> restore_thread; |
1941c569 | 2681 | |
5ed8105e PA |
2682 | if (inferior_ptid != null_ptid) |
2683 | restore_thread.emplace (); | |
1941c569 | 2684 | |
6efcd9a8 PA |
2685 | /* Avoid reading registers -- we haven't fetched the target |
2686 | description yet. */ | |
00431a78 | 2687 | switch_to_thread_no_regs (thr); |
1941c569 PA |
2688 | |
2689 | /* When we "notice" a new inferior we need to do all the things we | |
2690 | would normally do if we had just attached to it. */ | |
2691 | ||
00431a78 | 2692 | if (thr->executing) |
1941c569 PA |
2693 | { |
2694 | struct inferior *inferior = current_inferior (); | |
2695 | ||
2696 | /* We're going to install breakpoints, and poke at memory, | |
2697 | ensure that the inferior is stopped for a moment while we do | |
2698 | that. */ | |
2699 | target_stop (inferior_ptid); | |
2700 | ||
16c381f0 | 2701 | inferior->control.stop_soon = STOP_QUIETLY_REMOTE; |
1941c569 PA |
2702 | |
2703 | /* Wait for stop before proceeding. */ | |
4efeb0d3 | 2704 | inferior->add_continuation ([=] () |
c4c493de TBA |
2705 | { |
2706 | attach_post_wait (from_tty, mode); | |
2707 | }); | |
1941c569 | 2708 | |
0b333c5e | 2709 | return; |
1941c569 PA |
2710 | } |
2711 | ||
27d0790a | 2712 | attach_post_wait (from_tty, mode); |
1941c569 PA |
2713 | } |
2714 | ||
c906108c SS |
2715 | /* |
2716 | * detach_command -- | |
2717 | * takes a program previously attached to and detaches it. | |
2718 | * The program resumes execution and will no longer stop | |
2719 | * on signals, etc. We better not have left any breakpoints | |
2720 | * in the program or it'll die when it hits one. For this | |
2721 | * to work, it may be necessary for the process to have been | |
2722 | * previously attached. It *might* work if the program was | |
2723 | * started via the normal ptrace (PTRACE_TRACEME). | |
2724 | */ | |
2725 | ||
6418d433 | 2726 | void |
981a3fb3 | 2727 | detach_command (const char *args, int from_tty) |
c906108c | 2728 | { |
1f5d0fc9 | 2729 | dont_repeat (); /* Not for the faint of heart. */ |
d729566a | 2730 | |
d7e15655 | 2731 | if (inferior_ptid == null_ptid) |
d729566a PA |
2732 | error (_("The program is not being run.")); |
2733 | ||
1192f124 SM |
2734 | scoped_disable_commit_resumed disable_commit_resumed ("detaching"); |
2735 | ||
2f9d54cf PA |
2736 | query_if_trace_running (from_tty); |
2737 | ||
2738 | disconnect_tracing (); | |
d5551862 | 2739 | |
408f6686 PA |
2740 | /* Hold a strong reference to the target while (maybe) |
2741 | detaching the parent. Otherwise detaching could close the | |
2742 | target. */ | |
2743 | auto target_ref | |
2744 | = target_ops_ref::new_reference (current_inferior ()->process_target ()); | |
2745 | ||
2746 | /* Save this before detaching, since detaching may unpush the | |
2747 | process_stratum target. */ | |
2748 | bool was_non_stop_p = target_is_non_stop_p (); | |
2749 | ||
6e1e1966 | 2750 | target_detach (current_inferior (), from_tty); |
50c71eaf | 2751 | |
63000888 PA |
2752 | /* The current inferior process was just detached successfully. Get |
2753 | rid of breakpoints that no longer make sense. Note we don't do | |
2754 | this within target_detach because that is also used when | |
2755 | following child forks, and in that case we will want to transfer | |
2756 | breakpoints to the child, not delete them. */ | |
2757 | breakpoint_init_inferior (inf_exited); | |
2758 | ||
50c71eaf PA |
2759 | /* If the solist is global across inferiors, don't clear it when we |
2760 | detach from a single inferior. */ | |
f5656ead | 2761 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
50c71eaf | 2762 | no_shared_libraries (NULL, from_tty); |
8a305172 | 2763 | |
9a4105ab AC |
2764 | if (deprecated_detach_hook) |
2765 | deprecated_detach_hook (); | |
408f6686 PA |
2766 | |
2767 | if (!was_non_stop_p) | |
2768 | restart_after_all_stop_detach (as_process_stratum_target (target_ref.get ())); | |
1192f124 SM |
2769 | |
2770 | disable_commit_resumed.reset_and_commit (); | |
c906108c SS |
2771 | } |
2772 | ||
6ad8ae5c DJ |
2773 | /* Disconnect from the current target without resuming it (leaving it |
2774 | waiting for a debugger). | |
2775 | ||
2776 | We'd better not have left any breakpoints in the program or the | |
2777 | next debugger will get confused. Currently only supported for some | |
2778 | remote targets, since the normal attach mechanisms don't work on | |
2779 | stopped processes on some native platforms (e.g. GNU/Linux). */ | |
2780 | ||
2781 | static void | |
0b39b52e | 2782 | disconnect_command (const char *args, int from_tty) |
6ad8ae5c | 2783 | { |
1777feb0 | 2784 | dont_repeat (); /* Not for the faint of heart. */ |
2f9d54cf PA |
2785 | query_if_trace_running (from_tty); |
2786 | disconnect_tracing (); | |
6ad8ae5c | 2787 | target_disconnect (args, from_tty); |
e85a822c | 2788 | no_shared_libraries (NULL, from_tty); |
a0ef4274 | 2789 | init_thread_list (); |
9a4105ab AC |
2790 | if (deprecated_detach_hook) |
2791 | deprecated_detach_hook (); | |
6ad8ae5c DJ |
2792 | } |
2793 | ||
5b6d1e4f PA |
2794 | /* Stop PTID in the current target, and tag the PTID threads as having |
2795 | been explicitly requested to stop. PTID can be a thread, a | |
2796 | process, or minus_one_ptid, meaning all threads of all inferiors of | |
2797 | the current target. */ | |
e42de8c7 | 2798 | |
5b6d1e4f PA |
2799 | static void |
2800 | stop_current_target_threads_ns (ptid_t ptid) | |
2801 | { | |
2802 | target_stop (ptid); | |
252fbfc8 PA |
2803 | |
2804 | /* Tag the thread as having been explicitly requested to stop, so | |
2805 | other parts of gdb know not to resume this thread automatically, | |
2806 | if it was stopped due to an internal event. Limit this to | |
2807 | non-stop mode, as when debugging a multi-threaded application in | |
2808 | all-stop mode, we will only get one stop event --- it's undefined | |
2809 | which thread will report the event. */ | |
5b6d1e4f PA |
2810 | set_stop_requested (current_inferior ()->process_target (), |
2811 | ptid, 1); | |
2812 | } | |
2813 | ||
2814 | /* See inferior.h. */ | |
2815 | ||
2816 | void | |
2817 | interrupt_target_1 (bool all_threads) | |
2818 | { | |
1192f124 SM |
2819 | scoped_disable_commit_resumed disable_commit_resumed ("interrupting"); |
2820 | ||
252fbfc8 | 2821 | if (non_stop) |
5b6d1e4f PA |
2822 | { |
2823 | if (all_threads) | |
2824 | { | |
2825 | scoped_restore_current_thread restore_thread; | |
2826 | ||
2827 | for (inferior *inf : all_inferiors ()) | |
2828 | { | |
2829 | switch_to_inferior_no_thread (inf); | |
2830 | stop_current_target_threads_ns (minus_one_ptid); | |
2831 | } | |
2832 | } | |
2833 | else | |
2834 | stop_current_target_threads_ns (inferior_ptid); | |
2835 | } | |
2836 | else | |
2837 | target_interrupt (); | |
1192f124 SM |
2838 | |
2839 | disable_commit_resumed.reset_and_commit (); | |
77ebaa5a VP |
2840 | } |
2841 | ||
6339bfc4 DE |
2842 | /* interrupt [-a] |
2843 | Stop the execution of the target while running in async mode, in | |
17e5269b | 2844 | the background. In all-stop, stop the whole process. In non-stop |
8cae4b3f PA |
2845 | mode, stop the current thread only by default, or stop all threads |
2846 | if the `-a' switch is used. */ | |
2847 | ||
1dd5fedc | 2848 | static void |
0b39b52e | 2849 | interrupt_command (const char *args, int from_tty) |
43ff13b4 | 2850 | { |
362646f5 | 2851 | if (target_can_async_p ()) |
43ff13b4 | 2852 | { |
8cae4b3f PA |
2853 | int all_threads = 0; |
2854 | ||
1777feb0 | 2855 | dont_repeat (); /* Not for the faint of heart. */ |
94cc34af | 2856 | |
8cae4b3f | 2857 | if (args != NULL |
61012eef | 2858 | && startswith (args, "-a")) |
8cae4b3f PA |
2859 | all_threads = 1; |
2860 | ||
2861 | if (!non_stop && all_threads) | |
2862 | error (_("-a is meaningless in all-stop mode.")); | |
2863 | ||
77ebaa5a | 2864 | interrupt_target_1 (all_threads); |
43ff13b4 JM |
2865 | } |
2866 | } | |
2867 | ||
cc86d1cb YQ |
2868 | /* See inferior.h. */ |
2869 | ||
2870 | void | |
2871 | default_print_float_info (struct gdbarch *gdbarch, struct ui_file *file, | |
2872 | struct frame_info *frame, const char *args) | |
c906108c | 2873 | { |
cc86d1cb YQ |
2874 | int regnum; |
2875 | int printed_something = 0; | |
d80b854b | 2876 | |
f6efe3f8 | 2877 | for (regnum = 0; regnum < gdbarch_num_cooked_regs (gdbarch); regnum++) |
23e3a7ac | 2878 | { |
cc86d1cb | 2879 | if (gdbarch_register_reggroup_p (gdbarch, regnum, float_reggroup)) |
23e3a7ac | 2880 | { |
cc86d1cb YQ |
2881 | printed_something = 1; |
2882 | gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1); | |
23e3a7ac | 2883 | } |
23e3a7ac | 2884 | } |
cc86d1cb YQ |
2885 | if (!printed_something) |
2886 | fprintf_filtered (file, "No floating-point info " | |
2887 | "available for this processor.\n"); | |
23e3a7ac AC |
2888 | } |
2889 | ||
2890 | static void | |
1d12d88f | 2891 | info_float_command (const char *args, int from_tty) |
23e3a7ac | 2892 | { |
cc86d1cb YQ |
2893 | struct frame_info *frame; |
2894 | ||
9dccd06e | 2895 | if (!target_has_registers ()) |
206415a3 DJ |
2896 | error (_("The program has no registers now.")); |
2897 | ||
cc86d1cb YQ |
2898 | frame = get_selected_frame (NULL); |
2899 | gdbarch_print_float_info (get_frame_arch (frame), gdb_stdout, frame, args); | |
c906108c SS |
2900 | } |
2901 | \f | |
145b16a9 UW |
2902 | /* Implement `info proc' family of commands. */ |
2903 | ||
2904 | static void | |
69f476a3 | 2905 | info_proc_cmd_1 (const char *args, enum info_proc_what what, int from_tty) |
145b16a9 | 2906 | { |
3030c96e UW |
2907 | struct gdbarch *gdbarch = get_current_arch (); |
2908 | ||
451b7c33 TT |
2909 | if (!target_info_proc (args, what)) |
2910 | { | |
2911 | if (gdbarch_info_proc_p (gdbarch)) | |
2912 | gdbarch_info_proc (gdbarch, args, what); | |
2913 | else | |
2914 | error (_("Not supported on this target.")); | |
2915 | } | |
145b16a9 UW |
2916 | } |
2917 | ||
85102364 | 2918 | /* Implement `info proc' when given without any further parameters. */ |
145b16a9 UW |
2919 | |
2920 | static void | |
981a3fb3 | 2921 | info_proc_cmd (const char *args, int from_tty) |
145b16a9 UW |
2922 | { |
2923 | info_proc_cmd_1 (args, IP_MINIMAL, from_tty); | |
2924 | } | |
2925 | ||
2926 | /* Implement `info proc mappings'. */ | |
2927 | ||
2928 | static void | |
69f476a3 | 2929 | info_proc_cmd_mappings (const char *args, int from_tty) |
145b16a9 UW |
2930 | { |
2931 | info_proc_cmd_1 (args, IP_MAPPINGS, from_tty); | |
2932 | } | |
2933 | ||
2934 | /* Implement `info proc stat'. */ | |
2935 | ||
2936 | static void | |
69f476a3 | 2937 | info_proc_cmd_stat (const char *args, int from_tty) |
145b16a9 UW |
2938 | { |
2939 | info_proc_cmd_1 (args, IP_STAT, from_tty); | |
2940 | } | |
2941 | ||
2942 | /* Implement `info proc status'. */ | |
2943 | ||
2944 | static void | |
69f476a3 | 2945 | info_proc_cmd_status (const char *args, int from_tty) |
145b16a9 UW |
2946 | { |
2947 | info_proc_cmd_1 (args, IP_STATUS, from_tty); | |
2948 | } | |
2949 | ||
2950 | /* Implement `info proc cwd'. */ | |
2951 | ||
2952 | static void | |
69f476a3 | 2953 | info_proc_cmd_cwd (const char *args, int from_tty) |
145b16a9 UW |
2954 | { |
2955 | info_proc_cmd_1 (args, IP_CWD, from_tty); | |
2956 | } | |
2957 | ||
2958 | /* Implement `info proc cmdline'. */ | |
2959 | ||
2960 | static void | |
69f476a3 | 2961 | info_proc_cmd_cmdline (const char *args, int from_tty) |
145b16a9 UW |
2962 | { |
2963 | info_proc_cmd_1 (args, IP_CMDLINE, from_tty); | |
2964 | } | |
2965 | ||
2966 | /* Implement `info proc exe'. */ | |
2967 | ||
2968 | static void | |
69f476a3 | 2969 | info_proc_cmd_exe (const char *args, int from_tty) |
145b16a9 UW |
2970 | { |
2971 | info_proc_cmd_1 (args, IP_EXE, from_tty); | |
2972 | } | |
2973 | ||
e98ee8c4 JB |
2974 | /* Implement `info proc files'. */ |
2975 | ||
2976 | static void | |
2977 | info_proc_cmd_files (const char *args, int from_tty) | |
2978 | { | |
2979 | info_proc_cmd_1 (args, IP_FILES, from_tty); | |
2980 | } | |
2981 | ||
145b16a9 UW |
2982 | /* Implement `info proc all'. */ |
2983 | ||
2984 | static void | |
69f476a3 | 2985 | info_proc_cmd_all (const char *args, int from_tty) |
145b16a9 UW |
2986 | { |
2987 | info_proc_cmd_1 (args, IP_ALL, from_tty); | |
2988 | } | |
2989 | ||
000439d5 TT |
2990 | /* Implement `show print finish'. */ |
2991 | ||
2992 | static void | |
2993 | show_print_finish (struct ui_file *file, int from_tty, | |
2994 | struct cmd_list_element *c, | |
2995 | const char *value) | |
2996 | { | |
2997 | fprintf_filtered (file, _("\ | |
2998 | Printing of return value after `finish' is %s.\n"), | |
2999 | value); | |
3000 | } | |
3001 | ||
3002 | ||
4e5a4f58 JB |
3003 | /* This help string is used for the run, start, and starti commands. |
3004 | It is defined as a macro to prevent duplication. */ | |
3005 | ||
3006 | #define RUN_ARGS_HELP \ | |
3007 | "You may specify arguments to give it.\n\ | |
3008 | Args may include \"*\", or \"[...]\"; they are expanded using the\n\ | |
3009 | shell that will start the program (specified by the \"$SHELL\" environment\n\ | |
3010 | variable). Input and output redirection with \">\", \"<\", or \">>\"\n\ | |
3011 | are also allowed.\n\ | |
3012 | \n\ | |
3013 | With no arguments, uses arguments last specified (with \"run\" or \n\ | |
3014 | \"set args\"). To cancel previous arguments and run with no arguments,\n\ | |
3015 | use \"set args\" without arguments.\n\ | |
3016 | \n\ | |
3017 | To start the inferior without using a shell, use \"set startup-with-shell off\"." | |
3018 | ||
6c265988 | 3019 | void _initialize_infcmd (); |
c906108c | 3020 | void |
6c265988 | 3021 | _initialize_infcmd () |
c906108c | 3022 | { |
145b16a9 | 3023 | static struct cmd_list_element *info_proc_cmdlist; |
3cb3b8df | 3024 | struct cmd_list_element *c = NULL; |
6f937416 | 3025 | const char *cmd_name; |
3cb3b8df | 3026 | |
1777feb0 | 3027 | /* Add the filename of the terminal connected to inferior I/O. */ |
0a1ddfa6 SM |
3028 | add_setshow_optional_filename_cmd ("inferior-tty", class_run, |
3029 | &inferior_io_terminal_scratch, _("\ | |
3cb3b8df BR |
3030 | Set terminal for future runs of program being debugged."), _("\ |
3031 | Show terminal for future runs of program being debugged."), _("\ | |
0a1ddfa6 SM |
3032 | Usage: set inferior-tty [TTY]\n\n\ |
3033 | If TTY is omitted, the default behavior of using the same terminal as GDB\n\ | |
3034 | is restored."), | |
3035 | set_inferior_tty_command, | |
3036 | show_inferior_tty_command, | |
3037 | &setlist, &showlist); | |
21873064 | 3038 | cmd_name = "inferior-tty"; |
cf00cd6f | 3039 | c = lookup_cmd (&cmd_name, setlist, "", NULL, -1, 1); |
21873064 | 3040 | gdb_assert (c != NULL); |
57b4f16e | 3041 | add_alias_cmd ("tty", c, class_run, 0, &cmdlist); |
c906108c | 3042 | |
6ace3df1 YQ |
3043 | cmd_name = "args"; |
3044 | add_setshow_string_noescape_cmd (cmd_name, class_run, | |
3045 | &inferior_args_scratch, _("\ | |
b4b4ac0b AC |
3046 | Set argument list to give program being debugged when it is started."), _("\ |
3047 | Show argument list to give program being debugged when it is started."), _("\ | |
3048 | Follow this command with any number of args, to be passed to the program."), | |
6ace3df1 YQ |
3049 | set_args_command, |
3050 | show_args_command, | |
3051 | &setlist, &showlist); | |
cf00cd6f | 3052 | c = lookup_cmd (&cmd_name, setlist, "", NULL, -1, 1); |
6ace3df1 YQ |
3053 | gdb_assert (c != NULL); |
3054 | set_cmd_completer (c, filename_completer); | |
c906108c | 3055 | |
d092c5a2 SDJ |
3056 | cmd_name = "cwd"; |
3057 | add_setshow_string_noescape_cmd (cmd_name, class_run, | |
3058 | &inferior_cwd_scratch, _("\ | |
3059 | Set the current working directory to be used when the inferior is started.\n\ | |
3060 | Changing this setting does not have any effect on inferiors that are\n\ | |
3061 | already running."), | |
3062 | _("\ | |
3063 | Show the current working directory that is used when the inferior is started."), | |
3064 | _("\ | |
3065 | Use this command to change the current working directory that will be used\n\ | |
3066 | when the inferior is started. This setting does not affect GDB's current\n\ | |
3067 | working directory."), | |
3068 | set_cwd_command, | |
3069 | show_cwd_command, | |
3070 | &setlist, &showlist); | |
cf00cd6f | 3071 | c = lookup_cmd (&cmd_name, setlist, "", NULL, -1, 1); |
d092c5a2 SDJ |
3072 | gdb_assert (c != NULL); |
3073 | set_cmd_completer (c, filename_completer); | |
3074 | ||
1a966eab AC |
3075 | c = add_cmd ("environment", no_class, environment_info, _("\ |
3076 | The environment to give the program, or one variable's value.\n\ | |
c906108c SS |
3077 | With an argument VAR, prints the value of environment variable VAR to\n\ |
3078 | give the program being debugged. With no arguments, prints the entire\n\ | |
1a966eab | 3079 | environment to be given to the program."), &showlist); |
5ba2abeb | 3080 | set_cmd_completer (c, noop_completer); |
c906108c | 3081 | |
0743fc83 TT |
3082 | add_basic_prefix_cmd ("unset", no_class, |
3083 | _("Complement to certain \"set\" commands."), | |
3084 | &unsetlist, "unset ", 0, &cmdlist); | |
c5aa993b | 3085 | |
1a966eab AC |
3086 | c = add_cmd ("environment", class_run, unset_environment_command, _("\ |
3087 | Cancel environment variable VAR for the program.\n\ | |
3088 | This does not affect the program until the next \"run\" command."), | |
c5aa993b | 3089 | &unsetlist); |
5ba2abeb | 3090 | set_cmd_completer (c, noop_completer); |
c906108c | 3091 | |
1a966eab AC |
3092 | c = add_cmd ("environment", class_run, set_environment_command, _("\ |
3093 | Set environment variable value to give the program.\n\ | |
c906108c SS |
3094 | Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\ |
3095 | VALUES of environment variables are uninterpreted strings.\n\ | |
1a966eab | 3096 | This does not affect the program until the next \"run\" command."), |
c5aa993b | 3097 | &setlist); |
5ba2abeb | 3098 | set_cmd_completer (c, noop_completer); |
c5aa993b | 3099 | |
1bedd215 AC |
3100 | c = add_com ("path", class_files, path_command, _("\ |
3101 | Add directory DIR(s) to beginning of search path for object files.\n\ | |
c906108c SS |
3102 | $cwd in the path means the current working directory.\n\ |
3103 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
3104 | directories, separated by colons. These directories are searched to find\n\ | |
3e43a32a MS |
3105 | fully linked executable files and separately compiled object files as \ |
3106 | needed.")); | |
5ba2abeb | 3107 | set_cmd_completer (c, filename_completer); |
c906108c | 3108 | |
1a966eab AC |
3109 | c = add_cmd ("paths", no_class, path_info, _("\ |
3110 | Current search path for finding object files.\n\ | |
c906108c SS |
3111 | $cwd in the path means the current working directory.\n\ |
3112 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
3113 | directories, separated by colons. These directories are searched to find\n\ | |
3e43a32a MS |
3114 | fully linked executable files and separately compiled object files as \ |
3115 | needed."), | |
c906108c | 3116 | &showlist); |
5ba2abeb | 3117 | set_cmd_completer (c, noop_completer); |
c906108c | 3118 | |
2277426b PA |
3119 | add_prefix_cmd ("kill", class_run, kill_command, |
3120 | _("Kill execution of program being debugged."), | |
3121 | &killlist, "kill ", 0, &cmdlist); | |
5fd62852 | 3122 | |
1bedd215 AC |
3123 | add_com ("attach", class_run, attach_command, _("\ |
3124 | Attach to a process or file outside of GDB.\n\ | |
c906108c SS |
3125 | This command attaches to another target, of the same type as your last\n\ |
3126 | \"target\" command (\"info files\" will show your target stack).\n\ | |
3127 | The command may take as argument a process id or a device file.\n\ | |
3128 | For a process id, you must have permission to send the process a signal,\n\ | |
3129 | and it must have the same effective uid as the debugger.\n\ | |
3130 | When using \"attach\" with a process id, the debugger finds the\n\ | |
3131 | program running in the process, looking first in the current working\n\ | |
3132 | directory, or (if not found there) using the source file search path\n\ | |
3133 | (see the \"directory\" command). You can also use the \"file\" command\n\ | |
1bedd215 | 3134 | to specify the program, and to load its symbol table.")); |
c906108c | 3135 | |
f73adfeb | 3136 | add_prefix_cmd ("detach", class_run, detach_command, _("\ |
1bedd215 | 3137 | Detach a process or file previously attached.\n\ |
c906108c | 3138 | If a process, it is no longer traced, and it continues its execution. If\n\ |
f73adfeb AS |
3139 | you were debugging a file, the file is closed and gdb no longer accesses it."), |
3140 | &detachlist, "detach ", 0, &cmdlist); | |
c906108c | 3141 | |
1bedd215 AC |
3142 | add_com ("disconnect", class_run, disconnect_command, _("\ |
3143 | Disconnect from a target.\n\ | |
6ad8ae5c | 3144 | The target will wait for another debugger to connect. Not available for\n\ |
1bedd215 | 3145 | all targets.")); |
6ad8ae5c | 3146 | |
de0bea00 | 3147 | c = add_com ("signal", class_run, signal_command, _("\ |
486c7739 MF |
3148 | Continue program with the specified signal.\n\ |
3149 | Usage: signal SIGNAL\n\ | |
2edda2ff | 3150 | The SIGNAL argument is processed the same as the handle command.\n\ |
486c7739 MF |
3151 | \n\ |
3152 | An argument of \"0\" means continue the program without sending it a signal.\n\ | |
3153 | This is useful in cases where the program stopped because of a signal,\n\ | |
81219e53 DE |
3154 | and you want to resume the program while discarding the signal.\n\ |
3155 | \n\ | |
3156 | In a multi-threaded program the signal is delivered to, or discarded from,\n\ | |
3157 | the current thread only.")); | |
3158 | set_cmd_completer (c, signal_completer); | |
3159 | ||
3160 | c = add_com ("queue-signal", class_run, queue_signal_command, _("\ | |
3161 | Queue a signal to be delivered to the current thread when it is resumed.\n\ | |
3162 | Usage: queue-signal SIGNAL\n\ | |
3163 | The SIGNAL argument is processed the same as the handle command.\n\ | |
3164 | It is an error if the handling state of SIGNAL is \"nopass\".\n\ | |
3165 | \n\ | |
3166 | An argument of \"0\" means remove any currently queued signal from\n\ | |
3167 | the current thread. This is useful in cases where the program stopped\n\ | |
3168 | because of a signal, and you want to resume it while discarding the signal.\n\ | |
3169 | \n\ | |
3170 | In a multi-threaded program the signal is queued with, or discarded from,\n\ | |
3171 | the current thread only.")); | |
de0bea00 | 3172 | set_cmd_completer (c, signal_completer); |
c906108c | 3173 | |
1bedd215 AC |
3174 | add_com ("stepi", class_run, stepi_command, _("\ |
3175 | Step one instruction exactly.\n\ | |
486c7739 MF |
3176 | Usage: stepi [N]\n\ |
3177 | Argument N means step N times (or till program stops for another \ | |
3e43a32a | 3178 | reason).")); |
57b4f16e | 3179 | add_com_alias ("si", "stepi", class_run, 0); |
c906108c | 3180 | |
1bedd215 AC |
3181 | add_com ("nexti", class_run, nexti_command, _("\ |
3182 | Step one instruction, but proceed through subroutine calls.\n\ | |
486c7739 MF |
3183 | Usage: nexti [N]\n\ |
3184 | Argument N means step N times (or till program stops for another \ | |
3e43a32a | 3185 | reason).")); |
57b4f16e | 3186 | add_com_alias ("ni", "nexti", class_run, 0); |
c906108c | 3187 | |
1bedd215 AC |
3188 | add_com ("finish", class_run, finish_command, _("\ |
3189 | Execute until selected stack frame returns.\n\ | |
486c7739 | 3190 | Usage: finish\n\ |
1bedd215 | 3191 | Upon return, the value returned is printed and put in the value history.")); |
0e479716 | 3192 | add_com_alias ("fin", "finish", class_run, 1); |
c906108c | 3193 | |
1bedd215 AC |
3194 | add_com ("next", class_run, next_command, _("\ |
3195 | Step program, proceeding through subroutine calls.\n\ | |
486c7739 MF |
3196 | Usage: next [N]\n\ |
3197 | Unlike \"step\", if the current source line calls a subroutine,\n\ | |
3198 | this command does not enter the subroutine, but instead steps over\n\ | |
dbf6a605 | 3199 | the call, in effect treating it as a single source line.")); |
c906108c | 3200 | add_com_alias ("n", "next", class_run, 1); |
c906108c | 3201 | |
1bedd215 AC |
3202 | add_com ("step", class_run, step_command, _("\ |
3203 | Step program until it reaches a different source line.\n\ | |
486c7739 MF |
3204 | Usage: step [N]\n\ |
3205 | Argument N means step N times (or till program stops for another \ | |
3e43a32a | 3206 | reason).")); |
c906108c SS |
3207 | add_com_alias ("s", "step", class_run, 1); |
3208 | ||
1bedd215 | 3209 | c = add_com ("until", class_run, until_command, _("\ |
590042fc | 3210 | Execute until past the current line or past a LOCATION.\n\ |
1bedd215 | 3211 | Execute until the program reaches a source line greater than the current\n\ |
3e43a32a MS |
3212 | or a specified location (same args as break command) within the current \ |
3213 | frame.")); | |
5ba2abeb | 3214 | set_cmd_completer (c, location_completer); |
c906108c | 3215 | add_com_alias ("u", "until", class_run, 1); |
c5aa993b | 3216 | |
1bedd215 | 3217 | c = add_com ("advance", class_run, advance_command, _("\ |
3e43a32a MS |
3218 | Continue the program up to the given location (same form as args for break \ |
3219 | command).\n\ | |
1bedd215 | 3220 | Execution will also stop upon exit from the current stack frame.")); |
ae66c1fc EZ |
3221 | set_cmd_completer (c, location_completer); |
3222 | ||
1bedd215 AC |
3223 | c = add_com ("jump", class_run, jump_command, _("\ |
3224 | Continue program being debugged at specified line or address.\n\ | |
0a8ba311 | 3225 | Usage: jump LOCATION\n\ |
c906108c | 3226 | Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\ |
1bedd215 | 3227 | for an address to start at.")); |
5ba2abeb | 3228 | set_cmd_completer (c, location_completer); |
c1d780c2 | 3229 | add_com_alias ("j", "jump", class_run, 1); |
c906108c | 3230 | |
df983543 | 3231 | add_com ("continue", class_run, continue_command, _("\ |
1bedd215 | 3232 | Continue program being debugged, after signal or breakpoint.\n\ |
486c7739 | 3233 | Usage: continue [N]\n\ |
c906108c SS |
3234 | If proceeding from breakpoint, a number N may be used as an argument,\n\ |
3235 | which means to set the ignore count of that breakpoint to N - 1 (so that\n\ | |
8cae4b3f PA |
3236 | the breakpoint won't break until the Nth time it is reached).\n\ |
3237 | \n\ | |
3238 | If non-stop mode is enabled, continue only the current thread,\n\ | |
3239 | otherwise all the threads in the program are continued. To \n\ | |
3240 | continue all stopped threads in non-stop mode, use the -a option.\n\ | |
3241 | Specifying -a and an ignore count simultaneously is an error.")); | |
c906108c SS |
3242 | add_com_alias ("c", "cont", class_run, 1); |
3243 | add_com_alias ("fg", "cont", class_run, 1); | |
3244 | ||
1bedd215 | 3245 | c = add_com ("run", class_run, run_command, _("\ |
4e5a4f58 JB |
3246 | Start debugged program.\n" |
3247 | RUN_ARGS_HELP)); | |
5ba2abeb | 3248 | set_cmd_completer (c, filename_completer); |
c906108c | 3249 | add_com_alias ("r", "run", class_run, 1); |
c906108c | 3250 | |
1bedd215 | 3251 | c = add_com ("start", class_run, start_command, _("\ |
4e5a4f58 JB |
3252 | Start the debugged program stopping at the beginning of the main procedure.\n" |
3253 | RUN_ARGS_HELP)); | |
3254 | set_cmd_completer (c, filename_completer); | |
3255 | ||
3256 | c = add_com ("starti", class_run, starti_command, _("\ | |
3257 | Start the debugged program stopping at the first instruction.\n" | |
3258 | RUN_ARGS_HELP)); | |
a4d5f2e0 JB |
3259 | set_cmd_completer (c, filename_completer); |
3260 | ||
0a07590b | 3261 | add_com ("interrupt", class_run, interrupt_command, |
df983543 | 3262 | _("Interrupt the execution of the debugged program.\n\ |
8cae4b3f PA |
3263 | If non-stop mode is enabled, interrupt only the current thread,\n\ |
3264 | otherwise all the threads in the program are stopped. To \n\ | |
3265 | interrupt all running threads in non-stop mode, use the -a option.")); | |
43ff13b4 | 3266 | |
11db9430 | 3267 | c = add_info ("registers", info_registers_command, _("\ |
1bedd215 | 3268 | List of integer registers and their contents, for selected stack frame.\n\ |
b67d92b0 SH |
3269 | One or more register names as argument means describe the given registers.\n\ |
3270 | One or more register group names as argument means describe the registers\n\ | |
3271 | in the named register groups.")); | |
7194c49b | 3272 | add_info_alias ("r", "registers", 1); |
71c24708 | 3273 | set_cmd_completer (c, reg_or_group_completer); |
c906108c | 3274 | |
11db9430 | 3275 | c = add_info ("all-registers", info_all_registers_command, _("\ |
1bedd215 | 3276 | List of all registers and their contents, for selected stack frame.\n\ |
b67d92b0 SH |
3277 | One or more register names as argument means describe the given registers.\n\ |
3278 | One or more register group names as argument means describe the registers\n\ | |
3279 | in the named register groups.")); | |
71c24708 | 3280 | set_cmd_completer (c, reg_or_group_completer); |
c906108c | 3281 | |
11db9430 | 3282 | add_info ("program", info_program_command, |
1bedd215 | 3283 | _("Execution status of the program.")); |
c906108c | 3284 | |
11db9430 | 3285 | add_info ("float", info_float_command, |
590042fc | 3286 | _("Print the status of the floating point unit.")); |
c906108c | 3287 | |
11db9430 | 3288 | add_info ("vector", info_vector_command, |
590042fc | 3289 | _("Print the status of the vector unit.")); |
145b16a9 UW |
3290 | |
3291 | add_prefix_cmd ("proc", class_info, info_proc_cmd, | |
3292 | _("\ | |
73f1bd76 | 3293 | Show additional information about a process.\n\ |
145b16a9 UW |
3294 | Specify any process id, or use the program being debugged by default."), |
3295 | &info_proc_cmdlist, "info proc ", | |
3296 | 1/*allow-unknown*/, &infolist); | |
3297 | ||
3298 | add_cmd ("mappings", class_info, info_proc_cmd_mappings, _("\ | |
73f1bd76 | 3299 | List memory regions mapped by the specified process."), |
145b16a9 UW |
3300 | &info_proc_cmdlist); |
3301 | ||
3302 | add_cmd ("stat", class_info, info_proc_cmd_stat, _("\ | |
3303 | List process info from /proc/PID/stat."), | |
3304 | &info_proc_cmdlist); | |
3305 | ||
3306 | add_cmd ("status", class_info, info_proc_cmd_status, _("\ | |
3307 | List process info from /proc/PID/status."), | |
3308 | &info_proc_cmdlist); | |
3309 | ||
3310 | add_cmd ("cwd", class_info, info_proc_cmd_cwd, _("\ | |
73f1bd76 | 3311 | List current working directory of the specified process."), |
145b16a9 UW |
3312 | &info_proc_cmdlist); |
3313 | ||
3314 | add_cmd ("cmdline", class_info, info_proc_cmd_cmdline, _("\ | |
73f1bd76 | 3315 | List command line arguments of the specified process."), |
145b16a9 UW |
3316 | &info_proc_cmdlist); |
3317 | ||
3318 | add_cmd ("exe", class_info, info_proc_cmd_exe, _("\ | |
73f1bd76 | 3319 | List absolute filename for executable of the specified process."), |
145b16a9 UW |
3320 | &info_proc_cmdlist); |
3321 | ||
e98ee8c4 JB |
3322 | add_cmd ("files", class_info, info_proc_cmd_files, _("\ |
3323 | List files opened by the specified process."), | |
3324 | &info_proc_cmdlist); | |
3325 | ||
145b16a9 | 3326 | add_cmd ("all", class_info, info_proc_cmd_all, _("\ |
73f1bd76 | 3327 | List all available info about the specified process."), |
145b16a9 | 3328 | &info_proc_cmdlist); |
000439d5 TT |
3329 | |
3330 | add_setshow_boolean_cmd ("finish", class_support, | |
3331 | &user_print_options.finish_print, _("\ | |
3332 | Set whether `finish' prints the return value."), _("\ | |
3333 | Show whether `finish' prints the return value."), NULL, | |
3334 | NULL, | |
3335 | show_print_finish, | |
3336 | &setprintlist, &showprintlist); | |
c906108c | 3337 | } |