]>
Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Select target systems and architectures at runtime for GDB. |
7998dfc3 | 2 | |
1d506c26 | 3 | Copyright (C) 1990-2024 Free Software Foundation, Inc. |
7998dfc3 | 4 | |
c906108c SS |
5 | Contributed by Cygnus Support. |
6 | ||
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 21 | |
c906108c | 22 | #include "target.h" |
68c765e2 | 23 | #include "target-dcache.h" |
c906108c SS |
24 | #include "gdbcmd.h" |
25 | #include "symtab.h" | |
26 | #include "inferior.h" | |
45741a9c | 27 | #include "infrun.h" |
fb85cece | 28 | #include "observable.h" |
c906108c SS |
29 | #include "bfd.h" |
30 | #include "symfile.h" | |
31 | #include "objfiles.h" | |
4930751a | 32 | #include "dcache.h" |
c906108c | 33 | #include <signal.h> |
4e052eda | 34 | #include "regcache.h" |
b6591e8b | 35 | #include "gdbcore.h" |
424163ea | 36 | #include "target-descriptions.h" |
e1ac3328 | 37 | #include "gdbthread.h" |
b9db4ced | 38 | #include "solib.h" |
07b82ea5 | 39 | #include "exec.h" |
edb3359d | 40 | #include "inline-frame.h" |
2f4d8875 | 41 | #include "tracepoint.h" |
198f946f | 42 | #include "gdbsupport/fileio.h" |
268a13a5 | 43 | #include "gdbsupport/agent.h" |
8de71aab | 44 | #include "auxv.h" |
a7068b60 | 45 | #include "target-debug.h" |
13d03262 | 46 | #include "ui.h" |
41fd2b0f | 47 | #include "event-top.h" |
325fac50 | 48 | #include <algorithm> |
268a13a5 | 49 | #include "gdbsupport/byte-vector.h" |
4a72de73 | 50 | #include "gdbsupport/search.h" |
e671cd59 | 51 | #include "terminal.h" |
d9f719f1 | 52 | #include <unordered_map> |
121b3efd | 53 | #include "target-connection.h" |
670e35fa | 54 | #include "valprint.h" |
0f8e2034 | 55 | #include "cli/cli-decode.h" |
c906108c | 56 | |
f0f9ff95 TT |
57 | static void generic_tls_error (void) ATTRIBUTE_NORETURN; |
58 | ||
a30bf1f1 | 59 | static void default_rcmd (struct target_ops *, const char *, struct ui_file *); |
a53f3625 | 60 | |
936d2992 PA |
61 | static int default_verify_memory (struct target_ops *self, |
62 | const gdb_byte *data, | |
63 | CORE_ADDR memaddr, ULONGEST size); | |
64 | ||
c25c4a8b | 65 | static void tcomplain (void) ATTRIBUTE_NORETURN; |
c906108c | 66 | |
d9f719f1 PA |
67 | /* Mapping between target_info objects (which have address identity) |
68 | and corresponding open/factory function/callback. Each add_target | |
69 | call adds one entry to this map, and registers a "target | |
70 | TARGET_NAME" command that when invoked calls the factory registered | |
71 | here. The target_info object is associated with the command via | |
72 | the command's context. */ | |
73 | static std::unordered_map<const target_info *, target_open_ftype *> | |
74 | target_factories; | |
c906108c | 75 | |
06b5b831 | 76 | /* The singleton debug target. */ |
c906108c | 77 | |
f6ac5f3d | 78 | static struct target_ops *the_debug_target; |
c906108c | 79 | |
c906108c SS |
80 | /* Command list for target. */ |
81 | ||
82 | static struct cmd_list_element *targetlist = NULL; | |
83 | ||
358be6e7 | 84 | /* See target.h. */ |
cf7a04e8 | 85 | |
358be6e7 | 86 | bool trust_readonly = false; |
cf7a04e8 | 87 | |
8defab1a DJ |
88 | /* Nonzero if we should show true memory content including |
89 | memory breakpoint inserted by gdb. */ | |
90 | ||
91 | static int show_memory_breakpoints = 0; | |
92 | ||
d914c394 SS |
93 | /* These globals control whether GDB attempts to perform these |
94 | operations; they are useful for targets that need to prevent | |
30baf67b | 95 | inadvertent disruption, such as in non-stop mode. */ |
d914c394 | 96 | |
491144b5 | 97 | bool may_write_registers = true; |
d914c394 | 98 | |
491144b5 | 99 | bool may_write_memory = true; |
d914c394 | 100 | |
491144b5 | 101 | bool may_insert_breakpoints = true; |
d914c394 | 102 | |
491144b5 | 103 | bool may_insert_tracepoints = true; |
d914c394 | 104 | |
491144b5 | 105 | bool may_insert_fast_tracepoints = true; |
d914c394 | 106 | |
491144b5 | 107 | bool may_stop = true; |
d914c394 | 108 | |
c906108c SS |
109 | /* Non-zero if we want to see trace of target level stuff. */ |
110 | ||
ccce17b0 | 111 | static unsigned int targetdebug = 0; |
3cecbbbe TT |
112 | |
113 | static void | |
eb4c3f4a | 114 | set_targetdebug (const char *args, int from_tty, struct cmd_list_element *c) |
3cecbbbe | 115 | { |
f6ac5f3d | 116 | if (targetdebug) |
02980c56 | 117 | current_inferior ()->push_target (the_debug_target); |
f6ac5f3d | 118 | else |
fadf6add | 119 | current_inferior ()->unpush_target (the_debug_target); |
3cecbbbe TT |
120 | } |
121 | ||
920d2a44 AC |
122 | static void |
123 | show_targetdebug (struct ui_file *file, int from_tty, | |
124 | struct cmd_list_element *c, const char *value) | |
125 | { | |
6cb06a8c | 126 | gdb_printf (file, _("Target debugging is %s.\n"), value); |
920d2a44 | 127 | } |
c906108c | 128 | |
c35b1492 | 129 | int |
a739972c | 130 | target_has_memory () |
c35b1492 | 131 | { |
328d42d8 SM |
132 | for (target_ops *t = current_inferior ()->top_target (); |
133 | t != NULL; | |
134 | t = t->beneath ()) | |
f6ac5f3d | 135 | if (t->has_memory ()) |
c35b1492 PA |
136 | return 1; |
137 | ||
138 | return 0; | |
139 | } | |
140 | ||
141 | int | |
841de120 | 142 | target_has_stack () |
c35b1492 | 143 | { |
328d42d8 SM |
144 | for (target_ops *t = current_inferior ()->top_target (); |
145 | t != NULL; | |
146 | t = t->beneath ()) | |
f6ac5f3d | 147 | if (t->has_stack ()) |
c35b1492 PA |
148 | return 1; |
149 | ||
150 | return 0; | |
151 | } | |
152 | ||
153 | int | |
9dccd06e | 154 | target_has_registers () |
c35b1492 | 155 | { |
328d42d8 SM |
156 | for (target_ops *t = current_inferior ()->top_target (); |
157 | t != NULL; | |
158 | t = t->beneath ()) | |
f6ac5f3d | 159 | if (t->has_registers ()) |
c35b1492 PA |
160 | return 1; |
161 | ||
162 | return 0; | |
163 | } | |
164 | ||
5018ce90 | 165 | bool |
55f6301a | 166 | target_has_execution (inferior *inf) |
c35b1492 | 167 | { |
55f6301a TT |
168 | if (inf == nullptr) |
169 | inf = current_inferior (); | |
170 | ||
5b6d1e4f PA |
171 | for (target_ops *t = inf->top_target (); |
172 | t != nullptr; | |
173 | t = inf->find_target_beneath (t)) | |
5018ce90 PA |
174 | if (t->has_execution (inf)) |
175 | return true; | |
c35b1492 | 176 | |
5018ce90 | 177 | return false; |
c35b1492 PA |
178 | } |
179 | ||
d777bf0d SM |
180 | const char * |
181 | target_shortname () | |
182 | { | |
328d42d8 | 183 | return current_inferior ()->top_target ()->shortname (); |
d777bf0d SM |
184 | } |
185 | ||
186 | /* See target.h. */ | |
187 | ||
188 | bool | |
189 | target_attach_no_wait () | |
190 | { | |
328d42d8 | 191 | return current_inferior ()->top_target ()->attach_no_wait (); |
d777bf0d SM |
192 | } |
193 | ||
194 | /* See target.h. */ | |
195 | ||
196 | void | |
197 | target_post_attach (int pid) | |
198 | { | |
328d42d8 | 199 | return current_inferior ()->top_target ()->post_attach (pid); |
d777bf0d SM |
200 | } |
201 | ||
202 | /* See target.h. */ | |
203 | ||
204 | void | |
205 | target_prepare_to_store (regcache *regcache) | |
206 | { | |
328d42d8 | 207 | return current_inferior ()->top_target ()->prepare_to_store (regcache); |
d777bf0d SM |
208 | } |
209 | ||
210 | /* See target.h. */ | |
211 | ||
212 | bool | |
213 | target_supports_enable_disable_tracepoint () | |
214 | { | |
328d42d8 SM |
215 | target_ops *target = current_inferior ()->top_target (); |
216 | ||
217 | return target->supports_enable_disable_tracepoint (); | |
d777bf0d SM |
218 | } |
219 | ||
220 | bool | |
221 | target_supports_string_tracing () | |
222 | { | |
328d42d8 | 223 | return current_inferior ()->top_target ()->supports_string_tracing (); |
d777bf0d SM |
224 | } |
225 | ||
226 | /* See target.h. */ | |
227 | ||
228 | bool | |
229 | target_supports_evaluation_of_breakpoint_conditions () | |
230 | { | |
328d42d8 SM |
231 | target_ops *target = current_inferior ()->top_target (); |
232 | ||
233 | return target->supports_evaluation_of_breakpoint_conditions (); | |
d777bf0d SM |
234 | } |
235 | ||
236 | /* See target.h. */ | |
237 | ||
238 | bool | |
239 | target_supports_dumpcore () | |
240 | { | |
328d42d8 | 241 | return current_inferior ()->top_target ()->supports_dumpcore (); |
d777bf0d SM |
242 | } |
243 | ||
244 | /* See target.h. */ | |
245 | ||
246 | void | |
247 | target_dumpcore (const char *filename) | |
248 | { | |
328d42d8 | 249 | return current_inferior ()->top_target ()->dumpcore (filename); |
d777bf0d SM |
250 | } |
251 | ||
252 | /* See target.h. */ | |
253 | ||
254 | bool | |
255 | target_can_run_breakpoint_commands () | |
256 | { | |
328d42d8 | 257 | return current_inferior ()->top_target ()->can_run_breakpoint_commands (); |
d777bf0d SM |
258 | } |
259 | ||
260 | /* See target.h. */ | |
261 | ||
262 | void | |
263 | target_files_info () | |
264 | { | |
328d42d8 | 265 | return current_inferior ()->top_target ()->files_info (); |
d777bf0d SM |
266 | } |
267 | ||
268 | /* See target.h. */ | |
d777bf0d SM |
269 | |
270 | int | |
271 | target_insert_fork_catchpoint (int pid) | |
272 | { | |
328d42d8 | 273 | return current_inferior ()->top_target ()->insert_fork_catchpoint (pid); |
d777bf0d SM |
274 | } |
275 | ||
276 | /* See target.h. */ | |
277 | ||
278 | int | |
279 | target_remove_fork_catchpoint (int pid) | |
280 | { | |
328d42d8 | 281 | return current_inferior ()->top_target ()->remove_fork_catchpoint (pid); |
d777bf0d SM |
282 | } |
283 | ||
284 | /* See target.h. */ | |
285 | ||
286 | int | |
287 | target_insert_vfork_catchpoint (int pid) | |
288 | { | |
328d42d8 | 289 | return current_inferior ()->top_target ()->insert_vfork_catchpoint (pid); |
d777bf0d SM |
290 | } |
291 | ||
292 | /* See target.h. */ | |
293 | ||
294 | int | |
295 | target_remove_vfork_catchpoint (int pid) | |
296 | { | |
328d42d8 | 297 | return current_inferior ()->top_target ()->remove_vfork_catchpoint (pid); |
d777bf0d SM |
298 | } |
299 | ||
300 | /* See target.h. */ | |
301 | ||
302 | int | |
303 | target_insert_exec_catchpoint (int pid) | |
304 | { | |
328d42d8 | 305 | return current_inferior ()->top_target ()->insert_exec_catchpoint (pid); |
d777bf0d SM |
306 | } |
307 | ||
308 | /* See target.h. */ | |
309 | ||
310 | int | |
311 | target_remove_exec_catchpoint (int pid) | |
312 | { | |
328d42d8 | 313 | return current_inferior ()->top_target ()->remove_exec_catchpoint (pid); |
d777bf0d SM |
314 | } |
315 | ||
316 | /* See target.h. */ | |
317 | ||
318 | int | |
319 | target_set_syscall_catchpoint (int pid, bool needed, int any_count, | |
320 | gdb::array_view<const int> syscall_counts) | |
321 | { | |
328d42d8 SM |
322 | target_ops *target = current_inferior ()->top_target (); |
323 | ||
324 | return target->set_syscall_catchpoint (pid, needed, any_count, | |
325 | syscall_counts); | |
d777bf0d SM |
326 | } |
327 | ||
328 | /* See target.h. */ | |
329 | ||
330 | void | |
331 | target_rcmd (const char *command, struct ui_file *outbuf) | |
332 | { | |
328d42d8 | 333 | return current_inferior ()->top_target ()->rcmd (command, outbuf); |
d777bf0d SM |
334 | } |
335 | ||
336 | /* See target.h. */ | |
337 | ||
338 | bool | |
339 | target_can_lock_scheduler () | |
340 | { | |
328d42d8 SM |
341 | target_ops *target = current_inferior ()->top_target (); |
342 | ||
343 | return (target->get_thread_control_capabilities ()& tc_schedlock) != 0; | |
d777bf0d SM |
344 | } |
345 | ||
346 | /* See target.h. */ | |
347 | ||
348 | bool | |
349 | target_can_async_p () | |
350 | { | |
0c1e6e26 AB |
351 | return target_can_async_p (current_inferior ()->top_target ()); |
352 | } | |
353 | ||
354 | /* See target.h. */ | |
355 | ||
356 | bool | |
357 | target_can_async_p (struct target_ops *target) | |
358 | { | |
fce6cd34 AB |
359 | if (!target_async_permitted) |
360 | return false; | |
0c1e6e26 | 361 | return target->can_async_p (); |
d777bf0d SM |
362 | } |
363 | ||
364 | /* See target.h. */ | |
365 | ||
366 | bool | |
367 | target_is_async_p () | |
368 | { | |
bf94662b AB |
369 | bool result = current_inferior ()->top_target ()->is_async_p (); |
370 | gdb_assert (target_async_permitted || !result); | |
371 | return result; | |
d777bf0d SM |
372 | } |
373 | ||
374 | exec_direction_kind | |
375 | target_execution_direction () | |
376 | { | |
328d42d8 | 377 | return current_inferior ()->top_target ()->execution_direction (); |
d777bf0d SM |
378 | } |
379 | ||
380 | /* See target.h. */ | |
381 | ||
382 | const char * | |
383 | target_extra_thread_info (thread_info *tp) | |
384 | { | |
328d42d8 | 385 | return current_inferior ()->top_target ()->extra_thread_info (tp); |
d777bf0d SM |
386 | } |
387 | ||
388 | /* See target.h. */ | |
389 | ||
0e90c441 | 390 | const char * |
d777bf0d SM |
391 | target_pid_to_exec_file (int pid) |
392 | { | |
328d42d8 | 393 | return current_inferior ()->top_target ()->pid_to_exec_file (pid); |
d777bf0d SM |
394 | } |
395 | ||
396 | /* See target.h. */ | |
397 | ||
398 | gdbarch * | |
399 | target_thread_architecture (ptid_t ptid) | |
400 | { | |
328d42d8 | 401 | return current_inferior ()->top_target ()->thread_architecture (ptid); |
d777bf0d SM |
402 | } |
403 | ||
404 | /* See target.h. */ | |
405 | ||
406 | int | |
407 | target_find_memory_regions (find_memory_region_ftype func, void *data) | |
408 | { | |
328d42d8 | 409 | return current_inferior ()->top_target ()->find_memory_regions (func, data); |
d777bf0d SM |
410 | } |
411 | ||
412 | /* See target.h. */ | |
413 | ||
414 | gdb::unique_xmalloc_ptr<char> | |
415 | target_make_corefile_notes (bfd *bfd, int *size_p) | |
416 | { | |
328d42d8 | 417 | return current_inferior ()->top_target ()->make_corefile_notes (bfd, size_p); |
d777bf0d SM |
418 | } |
419 | ||
420 | gdb_byte * | |
421 | target_get_bookmark (const char *args, int from_tty) | |
422 | { | |
328d42d8 | 423 | return current_inferior ()->top_target ()->get_bookmark (args, from_tty); |
d777bf0d SM |
424 | } |
425 | ||
426 | void | |
427 | target_goto_bookmark (const gdb_byte *arg, int from_tty) | |
428 | { | |
328d42d8 | 429 | return current_inferior ()->top_target ()->goto_bookmark (arg, from_tty); |
d777bf0d SM |
430 | } |
431 | ||
432 | /* See target.h. */ | |
433 | ||
434 | bool | |
435 | target_stopped_by_watchpoint () | |
436 | { | |
328d42d8 | 437 | return current_inferior ()->top_target ()->stopped_by_watchpoint (); |
d777bf0d SM |
438 | } |
439 | ||
440 | /* See target.h. */ | |
441 | ||
442 | bool | |
443 | target_stopped_by_sw_breakpoint () | |
444 | { | |
328d42d8 | 445 | return current_inferior ()->top_target ()->stopped_by_sw_breakpoint (); |
d777bf0d SM |
446 | } |
447 | ||
448 | bool | |
449 | target_supports_stopped_by_sw_breakpoint () | |
450 | { | |
328d42d8 SM |
451 | target_ops *target = current_inferior ()->top_target (); |
452 | ||
453 | return target->supports_stopped_by_sw_breakpoint (); | |
d777bf0d SM |
454 | } |
455 | ||
456 | bool | |
457 | target_stopped_by_hw_breakpoint () | |
458 | { | |
328d42d8 | 459 | return current_inferior ()->top_target ()->stopped_by_hw_breakpoint (); |
d777bf0d SM |
460 | } |
461 | ||
462 | bool | |
463 | target_supports_stopped_by_hw_breakpoint () | |
464 | { | |
328d42d8 SM |
465 | target_ops *target = current_inferior ()->top_target (); |
466 | ||
467 | return target->supports_stopped_by_hw_breakpoint (); | |
d777bf0d SM |
468 | } |
469 | ||
470 | /* See target.h. */ | |
471 | ||
472 | bool | |
473 | target_have_steppable_watchpoint () | |
474 | { | |
328d42d8 | 475 | return current_inferior ()->top_target ()->have_steppable_watchpoint (); |
d777bf0d SM |
476 | } |
477 | ||
478 | /* See target.h. */ | |
479 | ||
480 | int | |
481 | target_can_use_hardware_watchpoint (bptype type, int cnt, int othertype) | |
482 | { | |
328d42d8 SM |
483 | target_ops *target = current_inferior ()->top_target (); |
484 | ||
485 | return target->can_use_hw_breakpoint (type, cnt, othertype); | |
d777bf0d SM |
486 | } |
487 | ||
488 | /* See target.h. */ | |
489 | ||
490 | int | |
491 | target_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
492 | { | |
328d42d8 SM |
493 | target_ops *target = current_inferior ()->top_target (); |
494 | ||
495 | return target->region_ok_for_hw_watchpoint (addr, len); | |
d777bf0d SM |
496 | } |
497 | ||
498 | ||
499 | int | |
500 | target_can_do_single_step () | |
501 | { | |
328d42d8 | 502 | return current_inferior ()->top_target ()->can_do_single_step (); |
d777bf0d SM |
503 | } |
504 | ||
505 | /* See target.h. */ | |
506 | ||
507 | int | |
508 | target_insert_watchpoint (CORE_ADDR addr, int len, target_hw_bp_type type, | |
509 | expression *cond) | |
510 | { | |
328d42d8 SM |
511 | target_ops *target = current_inferior ()->top_target (); |
512 | ||
513 | return target->insert_watchpoint (addr, len, type, cond); | |
d777bf0d SM |
514 | } |
515 | ||
516 | /* See target.h. */ | |
517 | ||
518 | int | |
519 | target_remove_watchpoint (CORE_ADDR addr, int len, target_hw_bp_type type, | |
520 | expression *cond) | |
521 | { | |
328d42d8 SM |
522 | target_ops *target = current_inferior ()->top_target (); |
523 | ||
524 | return target->remove_watchpoint (addr, len, type, cond); | |
d777bf0d SM |
525 | } |
526 | ||
527 | /* See target.h. */ | |
528 | ||
529 | int | |
530 | target_insert_hw_breakpoint (gdbarch *gdbarch, bp_target_info *bp_tgt) | |
531 | { | |
328d42d8 SM |
532 | target_ops *target = current_inferior ()->top_target (); |
533 | ||
534 | return target->insert_hw_breakpoint (gdbarch, bp_tgt); | |
d777bf0d SM |
535 | } |
536 | ||
537 | /* See target.h. */ | |
538 | ||
539 | int | |
540 | target_remove_hw_breakpoint (gdbarch *gdbarch, bp_target_info *bp_tgt) | |
541 | { | |
328d42d8 SM |
542 | target_ops *target = current_inferior ()->top_target (); |
543 | ||
544 | return target->remove_hw_breakpoint (gdbarch, bp_tgt); | |
d777bf0d SM |
545 | } |
546 | ||
547 | /* See target.h. */ | |
548 | ||
549 | bool | |
550 | target_can_accel_watchpoint_condition (CORE_ADDR addr, int len, int type, | |
551 | expression *cond) | |
552 | { | |
328d42d8 SM |
553 | target_ops *target = current_inferior ()->top_target (); |
554 | ||
555 | return target->can_accel_watchpoint_condition (addr, len, type, cond); | |
d777bf0d SM |
556 | } |
557 | ||
558 | /* See target.h. */ | |
559 | ||
560 | bool | |
561 | target_can_execute_reverse () | |
562 | { | |
328d42d8 | 563 | return current_inferior ()->top_target ()->can_execute_reverse (); |
d777bf0d SM |
564 | } |
565 | ||
566 | ptid_t | |
c80e29db | 567 | target_get_ada_task_ptid (long lwp, ULONGEST tid) |
d777bf0d | 568 | { |
328d42d8 | 569 | return current_inferior ()->top_target ()->get_ada_task_ptid (lwp, tid); |
d777bf0d SM |
570 | } |
571 | ||
572 | bool | |
573 | target_filesystem_is_local () | |
574 | { | |
328d42d8 | 575 | return current_inferior ()->top_target ()->filesystem_is_local (); |
d777bf0d SM |
576 | } |
577 | ||
578 | void | |
579 | target_trace_init () | |
580 | { | |
328d42d8 | 581 | return current_inferior ()->top_target ()->trace_init (); |
d777bf0d SM |
582 | } |
583 | ||
584 | void | |
585 | target_download_tracepoint (bp_location *location) | |
586 | { | |
328d42d8 | 587 | return current_inferior ()->top_target ()->download_tracepoint (location); |
d777bf0d SM |
588 | } |
589 | ||
590 | bool | |
591 | target_can_download_tracepoint () | |
592 | { | |
328d42d8 | 593 | return current_inferior ()->top_target ()->can_download_tracepoint (); |
d777bf0d SM |
594 | } |
595 | ||
596 | void | |
597 | target_download_trace_state_variable (const trace_state_variable &tsv) | |
598 | { | |
328d42d8 SM |
599 | target_ops *target = current_inferior ()->top_target (); |
600 | ||
601 | return target->download_trace_state_variable (tsv); | |
d777bf0d SM |
602 | } |
603 | ||
604 | void | |
605 | target_enable_tracepoint (bp_location *loc) | |
606 | { | |
328d42d8 | 607 | return current_inferior ()->top_target ()->enable_tracepoint (loc); |
d777bf0d SM |
608 | } |
609 | ||
610 | void | |
611 | target_disable_tracepoint (bp_location *loc) | |
612 | { | |
328d42d8 | 613 | return current_inferior ()->top_target ()->disable_tracepoint (loc); |
d777bf0d SM |
614 | } |
615 | ||
616 | void | |
617 | target_trace_start () | |
618 | { | |
328d42d8 | 619 | return current_inferior ()->top_target ()->trace_start (); |
d777bf0d SM |
620 | } |
621 | ||
622 | void | |
623 | target_trace_set_readonly_regions () | |
624 | { | |
328d42d8 | 625 | return current_inferior ()->top_target ()->trace_set_readonly_regions (); |
d777bf0d SM |
626 | } |
627 | ||
628 | int | |
629 | target_get_trace_status (trace_status *ts) | |
630 | { | |
328d42d8 | 631 | return current_inferior ()->top_target ()->get_trace_status (ts); |
d777bf0d SM |
632 | } |
633 | ||
634 | void | |
01bccc56 | 635 | target_get_tracepoint_status (tracepoint *tp, uploaded_tp *utp) |
d777bf0d | 636 | { |
328d42d8 | 637 | return current_inferior ()->top_target ()->get_tracepoint_status (tp, utp); |
d777bf0d SM |
638 | } |
639 | ||
640 | void | |
641 | target_trace_stop () | |
642 | { | |
328d42d8 | 643 | return current_inferior ()->top_target ()->trace_stop (); |
d777bf0d SM |
644 | } |
645 | ||
646 | int | |
647 | target_trace_find (trace_find_type type, int num, | |
648 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) | |
649 | { | |
328d42d8 SM |
650 | target_ops *target = current_inferior ()->top_target (); |
651 | ||
652 | return target->trace_find (type, num, addr1, addr2, tpp); | |
d777bf0d SM |
653 | } |
654 | ||
655 | bool | |
656 | target_get_trace_state_variable_value (int tsv, LONGEST *val) | |
657 | { | |
328d42d8 SM |
658 | target_ops *target = current_inferior ()->top_target (); |
659 | ||
660 | return target->get_trace_state_variable_value (tsv, val); | |
d777bf0d SM |
661 | } |
662 | ||
663 | int | |
664 | target_save_trace_data (const char *filename) | |
665 | { | |
328d42d8 | 666 | return current_inferior ()->top_target ()->save_trace_data (filename); |
d777bf0d SM |
667 | } |
668 | ||
669 | int | |
670 | target_upload_tracepoints (uploaded_tp **utpp) | |
671 | { | |
328d42d8 | 672 | return current_inferior ()->top_target ()->upload_tracepoints (utpp); |
d777bf0d SM |
673 | } |
674 | ||
675 | int | |
676 | target_upload_trace_state_variables (uploaded_tsv **utsvp) | |
677 | { | |
328d42d8 SM |
678 | target_ops *target = current_inferior ()->top_target (); |
679 | ||
680 | return target->upload_trace_state_variables (utsvp); | |
d777bf0d SM |
681 | } |
682 | ||
683 | LONGEST | |
684 | target_get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
685 | { | |
328d42d8 SM |
686 | target_ops *target = current_inferior ()->top_target (); |
687 | ||
688 | return target->get_raw_trace_data (buf, offset, len); | |
d777bf0d SM |
689 | } |
690 | ||
691 | int | |
692 | target_get_min_fast_tracepoint_insn_len () | |
693 | { | |
328d42d8 SM |
694 | target_ops *target = current_inferior ()->top_target (); |
695 | ||
696 | return target->get_min_fast_tracepoint_insn_len (); | |
d777bf0d SM |
697 | } |
698 | ||
699 | void | |
700 | target_set_disconnected_tracing (int val) | |
701 | { | |
328d42d8 | 702 | return current_inferior ()->top_target ()->set_disconnected_tracing (val); |
d777bf0d SM |
703 | } |
704 | ||
705 | void | |
706 | target_set_circular_trace_buffer (int val) | |
707 | { | |
328d42d8 | 708 | return current_inferior ()->top_target ()->set_circular_trace_buffer (val); |
d777bf0d SM |
709 | } |
710 | ||
711 | void | |
712 | target_set_trace_buffer_size (LONGEST val) | |
713 | { | |
328d42d8 | 714 | return current_inferior ()->top_target ()->set_trace_buffer_size (val); |
d777bf0d SM |
715 | } |
716 | ||
717 | bool | |
718 | target_set_trace_notes (const char *user, const char *notes, | |
719 | const char *stopnotes) | |
720 | { | |
328d42d8 SM |
721 | target_ops *target = current_inferior ()->top_target (); |
722 | ||
723 | return target->set_trace_notes (user, notes, stopnotes); | |
d777bf0d SM |
724 | } |
725 | ||
726 | bool | |
727 | target_get_tib_address (ptid_t ptid, CORE_ADDR *addr) | |
728 | { | |
328d42d8 | 729 | return current_inferior ()->top_target ()->get_tib_address (ptid, addr); |
d777bf0d SM |
730 | } |
731 | ||
732 | void | |
733 | target_set_permissions () | |
734 | { | |
328d42d8 | 735 | return current_inferior ()->top_target ()->set_permissions (); |
d777bf0d SM |
736 | } |
737 | ||
738 | bool | |
739 | target_static_tracepoint_marker_at (CORE_ADDR addr, | |
740 | static_tracepoint_marker *marker) | |
741 | { | |
328d42d8 SM |
742 | target_ops *target = current_inferior ()->top_target (); |
743 | ||
744 | return target->static_tracepoint_marker_at (addr, marker); | |
d777bf0d SM |
745 | } |
746 | ||
747 | std::vector<static_tracepoint_marker> | |
748 | target_static_tracepoint_markers_by_strid (const char *marker_id) | |
749 | { | |
328d42d8 SM |
750 | target_ops *target = current_inferior ()->top_target (); |
751 | ||
752 | return target->static_tracepoint_markers_by_strid (marker_id); | |
d777bf0d SM |
753 | } |
754 | ||
755 | traceframe_info_up | |
756 | target_traceframe_info () | |
757 | { | |
328d42d8 | 758 | return current_inferior ()->top_target ()->traceframe_info (); |
d777bf0d SM |
759 | } |
760 | ||
761 | bool | |
762 | target_use_agent (bool use) | |
763 | { | |
328d42d8 | 764 | return current_inferior ()->top_target ()->use_agent (use); |
d777bf0d SM |
765 | } |
766 | ||
767 | bool | |
768 | target_can_use_agent () | |
769 | { | |
328d42d8 | 770 | return current_inferior ()->top_target ()->can_use_agent (); |
d777bf0d SM |
771 | } |
772 | ||
773 | bool | |
774 | target_augmented_libraries_svr4_read () | |
775 | { | |
328d42d8 | 776 | return current_inferior ()->top_target ()->augmented_libraries_svr4_read (); |
d777bf0d SM |
777 | } |
778 | ||
779 | bool | |
780 | target_supports_memory_tagging () | |
781 | { | |
328d42d8 | 782 | return current_inferior ()->top_target ()->supports_memory_tagging (); |
d777bf0d SM |
783 | } |
784 | ||
785 | bool | |
786 | target_fetch_memtags (CORE_ADDR address, size_t len, gdb::byte_vector &tags, | |
787 | int type) | |
788 | { | |
328d42d8 | 789 | return current_inferior ()->top_target ()->fetch_memtags (address, len, tags, type); |
d777bf0d SM |
790 | } |
791 | ||
792 | bool | |
793 | target_store_memtags (CORE_ADDR address, size_t len, | |
794 | const gdb::byte_vector &tags, int type) | |
795 | { | |
328d42d8 | 796 | return current_inferior ()->top_target ()->store_memtags (address, len, tags, type); |
d777bf0d SM |
797 | } |
798 | ||
7202f41f GR |
799 | bool |
800 | target_is_address_tagged (gdbarch *gdbarch, CORE_ADDR address) | |
801 | { | |
802 | return current_inferior ()->top_target ()->is_address_tagged (gdbarch, address); | |
803 | } | |
804 | ||
a388ab0b JB |
805 | x86_xsave_layout |
806 | target_fetch_x86_xsave_layout () | |
807 | { | |
808 | return current_inferior ()->top_target ()->fetch_x86_xsave_layout (); | |
809 | } | |
810 | ||
d777bf0d SM |
811 | void |
812 | target_log_command (const char *p) | |
813 | { | |
328d42d8 | 814 | return current_inferior ()->top_target ()->log_command (p); |
d777bf0d SM |
815 | } |
816 | ||
8981c758 TT |
817 | /* This is used to implement the various target commands. */ |
818 | ||
819 | static void | |
eb4c3f4a | 820 | open_target (const char *args, int from_tty, struct cmd_list_element *command) |
8981c758 | 821 | { |
0f8e2034 | 822 | auto *ti = static_cast<target_info *> (command->context ()); |
d9f719f1 | 823 | target_open_ftype *func = target_factories[ti]; |
8981c758 TT |
824 | |
825 | if (targetdebug) | |
6cb06a8c TT |
826 | gdb_printf (gdb_stdlog, "-> %s->open (...)\n", |
827 | ti->shortname); | |
8981c758 | 828 | |
d9f719f1 | 829 | func (args, from_tty); |
8981c758 TT |
830 | |
831 | if (targetdebug) | |
6cb06a8c TT |
832 | gdb_printf (gdb_stdlog, "<- %s->open (%s, %d)\n", |
833 | ti->shortname, args, from_tty); | |
8981c758 TT |
834 | } |
835 | ||
d9f719f1 | 836 | /* See target.h. */ |
c22a2b88 TT |
837 | |
838 | void | |
d9f719f1 PA |
839 | add_target (const target_info &t, target_open_ftype *func, |
840 | completer_ftype *completer) | |
c22a2b88 TT |
841 | { |
842 | struct cmd_list_element *c; | |
843 | ||
d9f719f1 PA |
844 | auto &func_slot = target_factories[&t]; |
845 | if (func_slot != nullptr) | |
f34652de | 846 | internal_error (_("target already added (\"%s\")."), t.shortname); |
d9f719f1 | 847 | func_slot = func; |
c906108c SS |
848 | |
849 | if (targetlist == NULL) | |
3b6acaee | 850 | add_basic_prefix_cmd ("target", class_run, _("\ |
1bedd215 | 851 | Connect to a target machine or process.\n\ |
c906108c SS |
852 | The first argument is the type or protocol of the target machine.\n\ |
853 | Remaining arguments are interpreted by the target protocol. For more\n\ | |
854 | information on the arguments for a particular protocol, type\n\ | |
1bedd215 | 855 | `help target ' followed by the protocol name."), |
2f822da5 | 856 | &targetlist, 0, &cmdlist); |
d9f719f1 | 857 | c = add_cmd (t.shortname, no_class, t.doc, &targetlist); |
0f8e2034 | 858 | c->set_context ((void *) &t); |
5538b03c | 859 | c->func = open_target; |
9852c492 YQ |
860 | if (completer != NULL) |
861 | set_cmd_completer (c, completer); | |
862 | } | |
863 | ||
b48d48eb MM |
864 | /* See target.h. */ |
865 | ||
866 | void | |
d9f719f1 | 867 | add_deprecated_target_alias (const target_info &tinfo, const char *alias) |
b48d48eb MM |
868 | { |
869 | struct cmd_list_element *c; | |
b48d48eb MM |
870 | |
871 | /* If we use add_alias_cmd, here, we do not get the deprecated warning, | |
872 | see PR cli/15104. */ | |
d9f719f1 | 873 | c = add_cmd (alias, no_class, tinfo.doc, &targetlist); |
5538b03c | 874 | c->func = open_target; |
0f8e2034 | 875 | c->set_context ((void *) &tinfo); |
8579fd13 AB |
876 | gdb::unique_xmalloc_ptr<char> alt |
877 | = xstrprintf ("target %s", tinfo.shortname); | |
878 | deprecate_cmd (c, alt.release ()); | |
b48d48eb MM |
879 | } |
880 | ||
c906108c SS |
881 | /* Stub functions */ |
882 | ||
7d85a9c0 JB |
883 | void |
884 | target_kill (void) | |
885 | { | |
ed14d866 SM |
886 | |
887 | /* If the commit_resume_state of the to-be-killed-inferior's process stratum | |
888 | is true, and this inferior is the last live inferior with resumed threads | |
889 | of that target, then we want to leave commit_resume_state to false, as the | |
890 | target won't have any resumed threads anymore. We achieve this with | |
891 | this scoped_disable_commit_resumed. On construction, it will set the flag | |
892 | to false. On destruction, it will only set it to true if there are resumed | |
893 | threads left. */ | |
894 | scoped_disable_commit_resumed disable ("killing"); | |
328d42d8 | 895 | current_inferior ()->top_target ()->kill (); |
7d85a9c0 JB |
896 | } |
897 | ||
11cf8741 | 898 | void |
9cbe5fff | 899 | target_load (const char *arg, int from_tty) |
11cf8741 | 900 | { |
41336620 | 901 | target_dcache_invalidate (current_program_space->aspace); |
328d42d8 | 902 | current_inferior ()->top_target ()->load (arg, from_tty); |
11cf8741 JM |
903 | } |
904 | ||
223ffa71 | 905 | /* Define it. */ |
5842f62a | 906 | |
e671cd59 PA |
907 | target_terminal_state target_terminal::m_terminal_state |
908 | = target_terminal_state::is_ours; | |
5842f62a | 909 | |
223ffa71 | 910 | /* See target/target.h. */ |
5842f62a PA |
911 | |
912 | void | |
223ffa71 | 913 | target_terminal::init (void) |
5842f62a | 914 | { |
328d42d8 | 915 | current_inferior ()->top_target ()->terminal_init (); |
5842f62a | 916 | |
e671cd59 | 917 | m_terminal_state = target_terminal_state::is_ours; |
5842f62a PA |
918 | } |
919 | ||
223ffa71 | 920 | /* See target/target.h. */ |
2f99e8fc | 921 | |
d9d2d8b6 | 922 | void |
223ffa71 | 923 | target_terminal::inferior (void) |
d9d2d8b6 | 924 | { |
41fd2b0f PA |
925 | struct ui *ui = current_ui; |
926 | ||
d9d2d8b6 | 927 | /* A background resume (``run&'') should leave GDB in control of the |
3b12939d PA |
928 | terminal. */ |
929 | if (ui->prompt_state != PROMPT_BLOCKED) | |
d9d2d8b6 PA |
930 | return; |
931 | ||
215d3118 PA |
932 | /* Since we always run the inferior in the main console (unless "set |
933 | inferior-tty" is in effect), when some UI other than the main one | |
223ffa71 TT |
934 | calls target_terminal::inferior, then we leave the main UI's |
935 | terminal settings as is. */ | |
215d3118 PA |
936 | if (ui != main_ui) |
937 | return; | |
938 | ||
d9d2d8b6 PA |
939 | /* If GDB is resuming the inferior in the foreground, install |
940 | inferior's terminal modes. */ | |
e671cd59 PA |
941 | |
942 | struct inferior *inf = current_inferior (); | |
943 | ||
944 | if (inf->terminal_state != target_terminal_state::is_inferior) | |
945 | { | |
328d42d8 | 946 | current_inferior ()->top_target ()->terminal_inferior (); |
e671cd59 PA |
947 | inf->terminal_state = target_terminal_state::is_inferior; |
948 | } | |
949 | ||
950 | m_terminal_state = target_terminal_state::is_inferior; | |
951 | ||
952 | /* If the user hit C-c before, pretend that it was hit right | |
953 | here. */ | |
954 | if (check_quit_flag ()) | |
955 | target_pass_ctrlc (); | |
956 | } | |
957 | ||
958 | /* See target/target.h. */ | |
959 | ||
960 | void | |
961 | target_terminal::restore_inferior (void) | |
962 | { | |
963 | struct ui *ui = current_ui; | |
964 | ||
965 | /* See target_terminal::inferior(). */ | |
966 | if (ui->prompt_state != PROMPT_BLOCKED || ui != main_ui) | |
967 | return; | |
968 | ||
969 | /* Restore the terminal settings of inferiors that were in the | |
970 | foreground but are now ours_for_output due to a temporary | |
971 | target_target::ours_for_output() call. */ | |
972 | ||
973 | { | |
974 | scoped_restore_current_inferior restore_inferior; | |
e671cd59 | 975 | |
84b68c77 | 976 | for (::inferior *inf : all_inferiors ()) |
e671cd59 PA |
977 | { |
978 | if (inf->terminal_state == target_terminal_state::is_ours_for_output) | |
979 | { | |
980 | set_current_inferior (inf); | |
328d42d8 | 981 | current_inferior ()->top_target ()->terminal_inferior (); |
e671cd59 PA |
982 | inf->terminal_state = target_terminal_state::is_inferior; |
983 | } | |
984 | } | |
985 | } | |
986 | ||
987 | m_terminal_state = target_terminal_state::is_inferior; | |
93692b58 PA |
988 | |
989 | /* If the user hit C-c before, pretend that it was hit right | |
990 | here. */ | |
991 | if (check_quit_flag ()) | |
992 | target_pass_ctrlc (); | |
5842f62a PA |
993 | } |
994 | ||
e671cd59 PA |
995 | /* Switch terminal state to DESIRED_STATE, either is_ours, or |
996 | is_ours_for_output. */ | |
997 | ||
998 | static void | |
999 | target_terminal_is_ours_kind (target_terminal_state desired_state) | |
1000 | { | |
1001 | scoped_restore_current_inferior restore_inferior; | |
e671cd59 PA |
1002 | |
1003 | /* Must do this in two passes. First, have all inferiors save the | |
1004 | current terminal settings. Then, after all inferiors have add a | |
1005 | chance to safely save the terminal settings, restore GDB's | |
1006 | terminal settings. */ | |
1007 | ||
08036331 | 1008 | for (inferior *inf : all_inferiors ()) |
e671cd59 PA |
1009 | { |
1010 | if (inf->terminal_state == target_terminal_state::is_inferior) | |
1011 | { | |
1012 | set_current_inferior (inf); | |
328d42d8 | 1013 | current_inferior ()->top_target ()->terminal_save_inferior (); |
e671cd59 PA |
1014 | } |
1015 | } | |
1016 | ||
08036331 | 1017 | for (inferior *inf : all_inferiors ()) |
e671cd59 PA |
1018 | { |
1019 | /* Note we don't check is_inferior here like above because we | |
1020 | need to handle 'is_ours_for_output -> is_ours' too. Careful | |
1021 | to never transition from 'is_ours' to 'is_ours_for_output', | |
1022 | though. */ | |
1023 | if (inf->terminal_state != target_terminal_state::is_ours | |
1024 | && inf->terminal_state != desired_state) | |
1025 | { | |
1026 | set_current_inferior (inf); | |
1027 | if (desired_state == target_terminal_state::is_ours) | |
328d42d8 | 1028 | current_inferior ()->top_target ()->terminal_ours (); |
e671cd59 | 1029 | else if (desired_state == target_terminal_state::is_ours_for_output) |
328d42d8 | 1030 | current_inferior ()->top_target ()->terminal_ours_for_output (); |
e671cd59 PA |
1031 | else |
1032 | gdb_assert_not_reached ("unhandled desired state"); | |
1033 | inf->terminal_state = desired_state; | |
1034 | } | |
1035 | } | |
1036 | } | |
1037 | ||
223ffa71 | 1038 | /* See target/target.h. */ |
5842f62a PA |
1039 | |
1040 | void | |
223ffa71 | 1041 | target_terminal::ours () |
5842f62a | 1042 | { |
41fd2b0f PA |
1043 | struct ui *ui = current_ui; |
1044 | ||
223ffa71 | 1045 | /* See target_terminal::inferior. */ |
215d3118 PA |
1046 | if (ui != main_ui) |
1047 | return; | |
1048 | ||
e671cd59 | 1049 | if (m_terminal_state == target_terminal_state::is_ours) |
5842f62a PA |
1050 | return; |
1051 | ||
e671cd59 PA |
1052 | target_terminal_is_ours_kind (target_terminal_state::is_ours); |
1053 | m_terminal_state = target_terminal_state::is_ours; | |
5842f62a PA |
1054 | } |
1055 | ||
223ffa71 | 1056 | /* See target/target.h. */ |
5842f62a PA |
1057 | |
1058 | void | |
223ffa71 | 1059 | target_terminal::ours_for_output () |
5842f62a | 1060 | { |
215d3118 PA |
1061 | struct ui *ui = current_ui; |
1062 | ||
223ffa71 | 1063 | /* See target_terminal::inferior. */ |
215d3118 PA |
1064 | if (ui != main_ui) |
1065 | return; | |
1066 | ||
e671cd59 | 1067 | if (!target_terminal::is_inferior ()) |
5842f62a | 1068 | return; |
e671cd59 PA |
1069 | |
1070 | target_terminal_is_ours_kind (target_terminal_state::is_ours_for_output); | |
1071 | target_terminal::m_terminal_state = target_terminal_state::is_ours_for_output; | |
d9d2d8b6 | 1072 | } |
136d6dae | 1073 | |
223ffa71 TT |
1074 | /* See target/target.h. */ |
1075 | ||
1076 | void | |
1077 | target_terminal::info (const char *arg, int from_tty) | |
1078 | { | |
328d42d8 | 1079 | current_inferior ()->top_target ()->terminal_info (arg, from_tty); |
223ffa71 TT |
1080 | } |
1081 | ||
b0ed115f TT |
1082 | /* See target.h. */ |
1083 | ||
20f0d60d | 1084 | bool |
b0ed115f TT |
1085 | target_supports_terminal_ours (void) |
1086 | { | |
5b6d1e4f PA |
1087 | /* The current top target is the target at the top of the target |
1088 | stack of the current inferior. While normally there's always an | |
1089 | inferior, we must check for nullptr here because we can get here | |
1090 | very early during startup, before the initial inferior is first | |
1091 | created. */ | |
1092 | inferior *inf = current_inferior (); | |
20f0d60d | 1093 | |
5b6d1e4f | 1094 | if (inf == nullptr) |
20f0d60d | 1095 | return false; |
5b6d1e4f | 1096 | return inf->top_target ()->supports_terminal_ours (); |
b0ed115f TT |
1097 | } |
1098 | ||
c906108c | 1099 | static void |
fba45db2 | 1100 | tcomplain (void) |
c906108c | 1101 | { |
8a3fe4f8 | 1102 | error (_("You can't do that when your target is `%s'"), |
328d42d8 | 1103 | current_inferior ()->top_target ()->shortname ()); |
c906108c SS |
1104 | } |
1105 | ||
1106 | void | |
fba45db2 | 1107 | noprocess (void) |
c906108c | 1108 | { |
8a3fe4f8 | 1109 | error (_("You can't do that without a process to debug.")); |
c906108c SS |
1110 | } |
1111 | ||
c906108c | 1112 | static void |
0a4f40a2 | 1113 | default_terminal_info (struct target_ops *self, const char *args, int from_tty) |
c906108c | 1114 | { |
6cb06a8c | 1115 | gdb_printf (_("No saved terminal information.\n")); |
c906108c SS |
1116 | } |
1117 | ||
0ef643c8 JB |
1118 | /* A default implementation for the to_get_ada_task_ptid target method. |
1119 | ||
1120 | This function builds the PTID by using both LWP and TID as part of | |
1121 | the PTID lwp and tid elements. The pid used is the pid of the | |
1122 | inferior_ptid. */ | |
1123 | ||
2c0b251b | 1124 | static ptid_t |
c80e29db | 1125 | default_get_ada_task_ptid (struct target_ops *self, long lwp, ULONGEST tid) |
0ef643c8 | 1126 | { |
e99b03dc | 1127 | return ptid_t (inferior_ptid.pid (), lwp, tid); |
0ef643c8 JB |
1128 | } |
1129 | ||
32231432 | 1130 | static enum exec_direction_kind |
4c612759 | 1131 | default_execution_direction (struct target_ops *self) |
32231432 | 1132 | { |
05374cfd | 1133 | if (!target_can_execute_reverse ()) |
32231432 PA |
1134 | return EXEC_FORWARD; |
1135 | else if (!target_can_async_p ()) | |
1136 | return EXEC_FORWARD; | |
1137 | else | |
1138 | gdb_assert_not_reached ("\ | |
1139 | to_execution_direction must be implemented for reverse async"); | |
1140 | } | |
1141 | ||
a1740ee1 | 1142 | /* See target.h. */ |
c906108c | 1143 | |
5b6d1e4f | 1144 | void |
9678f8fe | 1145 | target_ops_ref_policy::decref (target_ops *t) |
5b6d1e4f PA |
1146 | { |
1147 | t->decref (); | |
1148 | if (t->refcount () == 0) | |
121b3efd PA |
1149 | { |
1150 | if (t->stratum () == process_stratum) | |
1151 | connection_list_remove (as_process_stratum_target (t)); | |
57685738 TT |
1152 | |
1153 | for (inferior *inf : all_inferiors ()) | |
1154 | gdb_assert (!inf->target_is_pushed (t)); | |
1155 | ||
1156 | fileio_handles_invalidate_target (t); | |
1157 | ||
1158 | t->close (); | |
1159 | ||
1160 | if (targetdebug) | |
1161 | gdb_printf (gdb_stdlog, "closing target\n"); | |
121b3efd | 1162 | } |
5b6d1e4f PA |
1163 | } |
1164 | ||
1165 | /* See target.h. */ | |
1166 | ||
b26a4dcb | 1167 | void |
a1740ee1 | 1168 | target_stack::push (target_ops *t) |
c906108c | 1169 | { |
91e3d1d1 AB |
1170 | /* We must create a new reference first. It is possible that T is |
1171 | already pushed on this target stack, in which case we will first | |
1172 | unpush it below, before re-pushing it. If we don't increment the | |
1173 | reference count now, then when we unpush it, we might end up deleting | |
1174 | T, which is not good. */ | |
1175 | auto ref = target_ops_ref::new_reference (t); | |
5b6d1e4f | 1176 | |
66b4deae PA |
1177 | strata stratum = t->stratum (); |
1178 | ||
5b6d1e4f PA |
1179 | /* If there's already a target at this stratum, remove it. */ |
1180 | ||
91e3d1d1 AB |
1181 | if (m_stack[stratum].get () != nullptr) |
1182 | unpush (m_stack[stratum].get ()); | |
c906108c | 1183 | |
a1740ee1 | 1184 | /* Now add the new one. */ |
91e3d1d1 | 1185 | m_stack[stratum] = std::move (ref); |
5d502164 | 1186 | |
66b4deae PA |
1187 | if (m_top < stratum) |
1188 | m_top = stratum; | |
91e3d1d1 AB |
1189 | |
1190 | if (stratum == process_stratum) | |
1191 | connection_list_add (as_process_stratum_target (t)); | |
a1740ee1 PA |
1192 | } |
1193 | ||
1194 | /* See target.h. */ | |
c906108c | 1195 | |
a1740ee1 PA |
1196 | bool |
1197 | target_stack::unpush (target_ops *t) | |
c906108c | 1198 | { |
1688cb29 TT |
1199 | gdb_assert (t != NULL); |
1200 | ||
66b4deae PA |
1201 | strata stratum = t->stratum (); |
1202 | ||
1203 | if (stratum == dummy_stratum) | |
f34652de | 1204 | internal_error (_("Attempt to unpush the dummy target")); |
c8d104ad | 1205 | |
a1740ee1 PA |
1206 | /* Look for the specified target. Note that a target can only occur |
1207 | once in the target stack. */ | |
c906108c | 1208 | |
66b4deae | 1209 | if (m_stack[stratum] != t) |
258b763a | 1210 | { |
a1740ee1 PA |
1211 | /* If T wasn't pushed, quit. Only open targets should be |
1212 | closed. */ | |
1213 | return false; | |
258b763a | 1214 | } |
c906108c | 1215 | |
66b4deae | 1216 | if (m_top == stratum) |
bedc4734 | 1217 | m_top = this->find_beneath (t)->stratum (); |
c906108c | 1218 | |
91e3d1d1 AB |
1219 | /* Move the target reference off the target stack, this sets the pointer |
1220 | held in m_stack to nullptr, and places the reference in ref. When | |
1221 | ref goes out of scope its reference count will be decremented, which | |
1222 | might cause the target to close. | |
1223 | ||
1224 | We have to do it this way, and not just set the value in m_stack to | |
1225 | nullptr directly, because doing so would decrement the reference | |
1226 | count first, which might close the target, and closing the target | |
1227 | does a check that the target is not on any inferiors target_stack. */ | |
1228 | auto ref = std::move (m_stack[stratum]); | |
305436e0 | 1229 | |
a1740ee1 | 1230 | return true; |
c906108c SS |
1231 | } |
1232 | ||
fadf6add SM |
1233 | void |
1234 | target_unpusher::operator() (struct target_ops *ops) const | |
1235 | { | |
1236 | current_inferior ()->unpush_target (ops); | |
1237 | } | |
1238 | ||
f0f9ff95 TT |
1239 | /* Default implementation of to_get_thread_local_address. */ |
1240 | ||
1241 | static void | |
1242 | generic_tls_error (void) | |
1243 | { | |
1244 | throw_error (TLS_GENERIC_ERROR, | |
1245 | _("Cannot find thread-local variables on this target")); | |
1246 | } | |
1247 | ||
72f5cf0e | 1248 | /* Using the objfile specified in OBJFILE, find the address for the |
9e35dae4 DJ |
1249 | current thread's thread-local storage with offset OFFSET. */ |
1250 | CORE_ADDR | |
1251 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) | |
1252 | { | |
1253 | volatile CORE_ADDR addr = 0; | |
328d42d8 | 1254 | struct target_ops *target = current_inferior ()->top_target (); |
99d9c3b9 | 1255 | gdbarch *gdbarch = current_inferior ()->arch (); |
9e35dae4 | 1256 | |
4cc98c36 JB |
1257 | /* If OBJFILE is a separate debug object file, look for the |
1258 | original object file. */ | |
1259 | if (objfile->separate_debug_objfile_backlink != NULL) | |
1260 | objfile = objfile->separate_debug_objfile_backlink; | |
1261 | ||
6e056c81 | 1262 | if (gdbarch_fetch_tls_load_module_address_p (gdbarch)) |
9e35dae4 DJ |
1263 | { |
1264 | ptid_t ptid = inferior_ptid; | |
9e35dae4 | 1265 | |
a70b8144 | 1266 | try |
9e35dae4 DJ |
1267 | { |
1268 | CORE_ADDR lm_addr; | |
1269 | ||
1270 | /* Fetch the load module address for this objfile. */ | |
6e056c81 | 1271 | lm_addr = gdbarch_fetch_tls_load_module_address (gdbarch, |
dda83cd7 | 1272 | objfile); |
9e35dae4 | 1273 | |
6e056c81 JB |
1274 | if (gdbarch_get_thread_local_address_p (gdbarch)) |
1275 | addr = gdbarch_get_thread_local_address (gdbarch, ptid, lm_addr, | |
1276 | offset); | |
1277 | else | |
1278 | addr = target->get_thread_local_address (ptid, lm_addr, offset); | |
9e35dae4 DJ |
1279 | } |
1280 | /* If an error occurred, print TLS related messages here. Otherwise, | |
dda83cd7 | 1281 | throw the error to some higher catcher. */ |
230d2906 | 1282 | catch (const gdb_exception &ex) |
9e35dae4 DJ |
1283 | { |
1284 | int objfile_is_library = (objfile->flags & OBJF_SHARED); | |
1285 | ||
1286 | switch (ex.error) | |
1287 | { | |
1288 | case TLS_NO_LIBRARY_SUPPORT_ERROR: | |
3e43a32a MS |
1289 | error (_("Cannot find thread-local variables " |
1290 | "in this thread library.")); | |
9e35dae4 DJ |
1291 | break; |
1292 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: | |
1293 | if (objfile_is_library) | |
1294 | error (_("Cannot find shared library `%s' in dynamic" | |
dda83cd7 | 1295 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
1296 | else |
1297 | error (_("Cannot find executable file `%s' in dynamic" | |
dda83cd7 | 1298 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
1299 | break; |
1300 | case TLS_NOT_ALLOCATED_YET_ERROR: | |
1301 | if (objfile_is_library) | |
1302 | error (_("The inferior has not yet allocated storage for" | |
dda83cd7 SM |
1303 | " thread-local variables in\n" |
1304 | "the shared library `%s'\n" | |
1305 | "for %s"), | |
a068643d TT |
1306 | objfile_name (objfile), |
1307 | target_pid_to_str (ptid).c_str ()); | |
9e35dae4 DJ |
1308 | else |
1309 | error (_("The inferior has not yet allocated storage for" | |
dda83cd7 SM |
1310 | " thread-local variables in\n" |
1311 | "the executable `%s'\n" | |
1312 | "for %s"), | |
a068643d TT |
1313 | objfile_name (objfile), |
1314 | target_pid_to_str (ptid).c_str ()); | |
9e35dae4 DJ |
1315 | break; |
1316 | case TLS_GENERIC_ERROR: | |
1317 | if (objfile_is_library) | |
1318 | error (_("Cannot find thread-local storage for %s, " | |
dda83cd7 | 1319 | "shared library %s:\n%s"), |
a068643d | 1320 | target_pid_to_str (ptid).c_str (), |
3d6e9d23 | 1321 | objfile_name (objfile), ex.what ()); |
9e35dae4 DJ |
1322 | else |
1323 | error (_("Cannot find thread-local storage for %s, " | |
dda83cd7 | 1324 | "executable file %s:\n%s"), |
a068643d | 1325 | target_pid_to_str (ptid).c_str (), |
3d6e9d23 | 1326 | objfile_name (objfile), ex.what ()); |
9e35dae4 DJ |
1327 | break; |
1328 | default: | |
eedc3f4f | 1329 | throw; |
9e35dae4 DJ |
1330 | break; |
1331 | } | |
1332 | } | |
1333 | } | |
9e35dae4 DJ |
1334 | else |
1335 | error (_("Cannot find thread-local variables on this target")); | |
1336 | ||
1337 | return addr; | |
1338 | } | |
1339 | ||
6be7b56e | 1340 | const char * |
01cb8804 | 1341 | target_xfer_status_to_string (enum target_xfer_status status) |
6be7b56e PA |
1342 | { |
1343 | #define CASE(X) case X: return #X | |
01cb8804 | 1344 | switch (status) |
6be7b56e PA |
1345 | { |
1346 | CASE(TARGET_XFER_E_IO); | |
bc113b4e | 1347 | CASE(TARGET_XFER_UNAVAILABLE); |
6be7b56e PA |
1348 | default: |
1349 | return "<unknown>"; | |
1350 | } | |
1351 | #undef CASE | |
1352 | }; | |
1353 | ||
1354 | ||
25b5a04e | 1355 | const std::vector<target_section> * |
07b82ea5 PA |
1356 | target_get_section_table (struct target_ops *target) |
1357 | { | |
f6ac5f3d | 1358 | return target->get_section_table (); |
07b82ea5 PA |
1359 | } |
1360 | ||
8db32d44 | 1361 | /* Find a section containing ADDR. */ |
07b82ea5 | 1362 | |
19cf757a | 1363 | const struct target_section * |
8db32d44 AC |
1364 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
1365 | { | |
25b5a04e | 1366 | const std::vector<target_section> *table = target_get_section_table (target); |
07b82ea5 PA |
1367 | |
1368 | if (table == NULL) | |
1369 | return NULL; | |
1370 | ||
19cf757a | 1371 | for (const target_section &secp : *table) |
8db32d44 | 1372 | { |
bb2a6777 TT |
1373 | if (addr >= secp.addr && addr < secp.endaddr) |
1374 | return &secp; | |
8db32d44 AC |
1375 | } |
1376 | return NULL; | |
1377 | } | |
1378 | ||
336aa7b7 AB |
1379 | /* See target.h. */ |
1380 | ||
25b5a04e | 1381 | const std::vector<target_section> * |
336aa7b7 AB |
1382 | default_get_section_table () |
1383 | { | |
1384 | return ¤t_program_space->target_sections (); | |
1385 | } | |
0fec99e8 PA |
1386 | |
1387 | /* Helper for the memory xfer routines. Checks the attributes of the | |
1388 | memory region of MEMADDR against the read or write being attempted. | |
1389 | If the access is permitted returns true, otherwise returns false. | |
1390 | REGION_P is an optional output parameter. If not-NULL, it is | |
1391 | filled with a pointer to the memory region of MEMADDR. REG_LEN | |
1392 | returns LEN trimmed to the end of the region. This is how much the | |
1393 | caller can continue requesting, if the access is permitted. A | |
1394 | single xfer request must not straddle memory region boundaries. */ | |
1395 | ||
1396 | static int | |
1397 | memory_xfer_check_region (gdb_byte *readbuf, const gdb_byte *writebuf, | |
1398 | ULONGEST memaddr, ULONGEST len, ULONGEST *reg_len, | |
1399 | struct mem_region **region_p) | |
1400 | { | |
1401 | struct mem_region *region; | |
1402 | ||
1403 | region = lookup_mem_region (memaddr); | |
1404 | ||
1405 | if (region_p != NULL) | |
1406 | *region_p = region; | |
1407 | ||
1408 | switch (region->attrib.mode) | |
1409 | { | |
1410 | case MEM_RO: | |
1411 | if (writebuf != NULL) | |
1412 | return 0; | |
1413 | break; | |
1414 | ||
1415 | case MEM_WO: | |
1416 | if (readbuf != NULL) | |
1417 | return 0; | |
1418 | break; | |
1419 | ||
1420 | case MEM_FLASH: | |
1421 | /* We only support writing to flash during "load" for now. */ | |
1422 | if (writebuf != NULL) | |
1423 | error (_("Writing to flash memory forbidden in this context")); | |
1424 | break; | |
1425 | ||
1426 | case MEM_NONE: | |
1427 | return 0; | |
1428 | } | |
1429 | ||
1430 | /* region->hi == 0 means there's no upper bound. */ | |
1431 | if (memaddr + len < region->hi || region->hi == 0) | |
1432 | *reg_len = len; | |
1433 | else | |
1434 | *reg_len = region->hi - memaddr; | |
1435 | ||
1436 | return 1; | |
1437 | } | |
1438 | ||
9f713294 YQ |
1439 | /* Read memory from more than one valid target. A core file, for |
1440 | instance, could have some of memory but delegate other bits to | |
1441 | the target below it. So, we must manually try all targets. */ | |
1442 | ||
cc9f16aa | 1443 | enum target_xfer_status |
17fde6d0 | 1444 | raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf, |
9b409511 YQ |
1445 | const gdb_byte *writebuf, ULONGEST memaddr, LONGEST len, |
1446 | ULONGEST *xfered_len) | |
9f713294 | 1447 | { |
9b409511 | 1448 | enum target_xfer_status res; |
9f713294 YQ |
1449 | |
1450 | do | |
1451 | { | |
f6ac5f3d PA |
1452 | res = ops->xfer_partial (TARGET_OBJECT_MEMORY, NULL, |
1453 | readbuf, writebuf, memaddr, len, | |
1454 | xfered_len); | |
9b409511 | 1455 | if (res == TARGET_XFER_OK) |
9f713294 YQ |
1456 | break; |
1457 | ||
633785ff | 1458 | /* Stop if the target reports that the memory is not available. */ |
bc113b4e | 1459 | if (res == TARGET_XFER_UNAVAILABLE) |
633785ff MM |
1460 | break; |
1461 | ||
2735d421 | 1462 | /* Don't continue past targets which have all the memory. |
dda83cd7 | 1463 | At one time, this code was necessary to read data from |
2735d421 KB |
1464 | executables / shared libraries when data for the requested |
1465 | addresses weren't available in the core file. But now the | |
1466 | core target handles this case itself. */ | |
f6ac5f3d | 1467 | if (ops->has_all_memory ()) |
9f713294 YQ |
1468 | break; |
1469 | ||
b6a8c27b | 1470 | ops = ops->beneath (); |
9f713294 YQ |
1471 | } |
1472 | while (ops != NULL); | |
1473 | ||
0f26cec1 PA |
1474 | /* The cache works at the raw memory level. Make sure the cache |
1475 | gets updated with raw contents no matter what kind of memory | |
1476 | object was originally being written. Note we do write-through | |
1477 | first, so that if it fails, we don't write to the cache contents | |
1478 | that never made it to the target. */ | |
1479 | if (writebuf != NULL | |
d7e15655 | 1480 | && inferior_ptid != null_ptid |
41336620 | 1481 | && target_dcache_init_p (current_program_space->aspace) |
0f26cec1 PA |
1482 | && (stack_cache_enabled_p () || code_cache_enabled_p ())) |
1483 | { | |
41336620 | 1484 | DCACHE *dcache = target_dcache_get (current_program_space->aspace); |
0f26cec1 PA |
1485 | |
1486 | /* Note that writing to an area of memory which wasn't present | |
1487 | in the cache doesn't cause it to be loaded in. */ | |
1488 | dcache_update (dcache, res, memaddr, writebuf, *xfered_len); | |
1489 | } | |
1490 | ||
9f713294 YQ |
1491 | return res; |
1492 | } | |
1493 | ||
7f79c47e DE |
1494 | /* Perform a partial memory transfer. |
1495 | For docs see target.h, to_xfer_partial. */ | |
cf7a04e8 | 1496 | |
9b409511 | 1497 | static enum target_xfer_status |
f0ba3972 | 1498 | memory_xfer_partial_1 (struct target_ops *ops, enum target_object object, |
17fde6d0 | 1499 | gdb_byte *readbuf, const gdb_byte *writebuf, ULONGEST memaddr, |
9b409511 | 1500 | ULONGEST len, ULONGEST *xfered_len) |
0779438d | 1501 | { |
9b409511 | 1502 | enum target_xfer_status res; |
0fec99e8 | 1503 | ULONGEST reg_len; |
cf7a04e8 | 1504 | struct mem_region *region; |
4e5d721f | 1505 | struct inferior *inf; |
cf7a04e8 | 1506 | |
07b82ea5 PA |
1507 | /* For accesses to unmapped overlay sections, read directly from |
1508 | files. Must do this first, as MEMADDR may need adjustment. */ | |
1509 | if (readbuf != NULL && overlay_debugging) | |
1510 | { | |
1511 | struct obj_section *section = find_pc_overlay (memaddr); | |
5d502164 | 1512 | |
07b82ea5 PA |
1513 | if (pc_in_unmapped_range (memaddr, section)) |
1514 | { | |
25b5a04e | 1515 | const std::vector<target_section> *table = target_get_section_table (ops); |
07b82ea5 | 1516 | const char *section_name = section->the_bfd_section->name; |
5d502164 | 1517 | |
07b82ea5 | 1518 | memaddr = overlay_mapped_address (memaddr, section); |
e56cb451 KB |
1519 | |
1520 | auto match_cb = [=] (const struct target_section *s) | |
1521 | { | |
1522 | return (strcmp (section_name, s->the_bfd_section->name) == 0); | |
1523 | }; | |
1524 | ||
07b82ea5 | 1525 | return section_table_xfer_memory_partial (readbuf, writebuf, |
9b409511 | 1526 | memaddr, len, xfered_len, |
bb2a6777 | 1527 | *table, match_cb); |
07b82ea5 PA |
1528 | } |
1529 | } | |
1530 | ||
1531 | /* Try the executable files, if "trust-readonly-sections" is set. */ | |
cf7a04e8 DJ |
1532 | if (readbuf != NULL && trust_readonly) |
1533 | { | |
19cf757a AB |
1534 | const struct target_section *secp |
1535 | = target_section_by_addr (ops, memaddr); | |
cf7a04e8 | 1536 | if (secp != NULL |
fd361982 | 1537 | && (bfd_section_flags (secp->the_bfd_section) & SEC_READONLY)) |
07b82ea5 | 1538 | { |
25b5a04e | 1539 | const std::vector<target_section> *table = target_get_section_table (ops); |
07b82ea5 | 1540 | return section_table_xfer_memory_partial (readbuf, writebuf, |
9b409511 | 1541 | memaddr, len, xfered_len, |
bb2a6777 | 1542 | *table); |
07b82ea5 | 1543 | } |
98646950 UW |
1544 | } |
1545 | ||
cf7a04e8 | 1546 | /* Try GDB's internal data cache. */ |
cf7a04e8 | 1547 | |
0fec99e8 PA |
1548 | if (!memory_xfer_check_region (readbuf, writebuf, memaddr, len, ®_len, |
1549 | ®ion)) | |
1550 | return TARGET_XFER_E_IO; | |
cf7a04e8 | 1551 | |
d7e15655 | 1552 | if (inferior_ptid != null_ptid) |
00431a78 | 1553 | inf = current_inferior (); |
6c95b8df PA |
1554 | else |
1555 | inf = NULL; | |
4e5d721f DE |
1556 | |
1557 | if (inf != NULL | |
0f26cec1 | 1558 | && readbuf != NULL |
2f4d8875 PA |
1559 | /* The dcache reads whole cache lines; that doesn't play well |
1560 | with reading from a trace buffer, because reading outside of | |
1561 | the collected memory range fails. */ | |
1562 | && get_traceframe_number () == -1 | |
4e5d721f | 1563 | && (region->attrib.cache |
29453a14 YQ |
1564 | || (stack_cache_enabled_p () && object == TARGET_OBJECT_STACK_MEMORY) |
1565 | || (code_cache_enabled_p () && object == TARGET_OBJECT_CODE_MEMORY))) | |
cf7a04e8 | 1566 | { |
41336620 SM |
1567 | DCACHE *dcache |
1568 | = target_dcache_get_or_init (current_program_space->aspace); | |
2a2f9fe4 | 1569 | |
0f26cec1 PA |
1570 | return dcache_read_memory_partial (ops, dcache, memaddr, readbuf, |
1571 | reg_len, xfered_len); | |
cf7a04e8 DJ |
1572 | } |
1573 | ||
1574 | /* If none of those methods found the memory we wanted, fall back | |
1575 | to a target partial transfer. Normally a single call to | |
1576 | to_xfer_partial is enough; if it doesn't recognize an object | |
1577 | it will call the to_xfer_partial of the next target down. | |
1578 | But for memory this won't do. Memory is the only target | |
9b409511 YQ |
1579 | object which can be read from more than one valid target. |
1580 | A core file, for instance, could have some of memory but | |
1581 | delegate other bits to the target below it. So, we must | |
1582 | manually try all targets. */ | |
1583 | ||
1584 | res = raw_memory_xfer_partial (ops, readbuf, writebuf, memaddr, reg_len, | |
1585 | xfered_len); | |
cf7a04e8 DJ |
1586 | |
1587 | /* If we still haven't got anything, return the last error. We | |
1588 | give up. */ | |
1589 | return res; | |
0779438d AC |
1590 | } |
1591 | ||
f0ba3972 PA |
1592 | /* Perform a partial memory transfer. For docs see target.h, |
1593 | to_xfer_partial. */ | |
1594 | ||
9b409511 | 1595 | static enum target_xfer_status |
f0ba3972 | 1596 | memory_xfer_partial (struct target_ops *ops, enum target_object object, |
9b409511 YQ |
1597 | gdb_byte *readbuf, const gdb_byte *writebuf, |
1598 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) | |
f0ba3972 | 1599 | { |
9b409511 | 1600 | enum target_xfer_status res; |
f0ba3972 PA |
1601 | |
1602 | /* Zero length requests are ok and require no work. */ | |
1603 | if (len == 0) | |
9b409511 | 1604 | return TARGET_XFER_EOF; |
f0ba3972 | 1605 | |
99d9c3b9 SM |
1606 | memaddr = gdbarch_remove_non_address_bits (current_inferior ()->arch (), |
1607 | memaddr); | |
a738ea1d | 1608 | |
f0ba3972 PA |
1609 | /* Fill in READBUF with breakpoint shadows, or WRITEBUF with |
1610 | breakpoint insns, thus hiding out from higher layers whether | |
1611 | there are software breakpoints inserted in the code stream. */ | |
1612 | if (readbuf != NULL) | |
1613 | { | |
9b409511 YQ |
1614 | res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len, |
1615 | xfered_len); | |
f0ba3972 | 1616 | |
9b409511 | 1617 | if (res == TARGET_XFER_OK && !show_memory_breakpoints) |
c63528fc | 1618 | breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, *xfered_len); |
f0ba3972 PA |
1619 | } |
1620 | else | |
1621 | { | |
67c059c2 AB |
1622 | /* A large write request is likely to be partially satisfied |
1623 | by memory_xfer_partial_1. We will continually malloc | |
1624 | and free a copy of the entire write request for breakpoint | |
1625 | shadow handling even though we only end up writing a small | |
09c98b44 DB |
1626 | subset of it. Cap writes to a limit specified by the target |
1627 | to mitigate this. */ | |
f6ac5f3d | 1628 | len = std::min (ops->get_memory_xfer_limit (), len); |
67c059c2 | 1629 | |
26fcd5d7 TT |
1630 | gdb::byte_vector buf (writebuf, writebuf + len); |
1631 | breakpoint_xfer_memory (NULL, buf.data (), writebuf, memaddr, len); | |
1632 | res = memory_xfer_partial_1 (ops, object, NULL, buf.data (), memaddr, len, | |
9b409511 | 1633 | xfered_len); |
f0ba3972 PA |
1634 | } |
1635 | ||
1636 | return res; | |
1637 | } | |
1638 | ||
cb85b21b TT |
1639 | scoped_restore_tmpl<int> |
1640 | make_scoped_restore_show_memory_breakpoints (int show) | |
8defab1a | 1641 | { |
cb85b21b | 1642 | return make_scoped_restore (&show_memory_breakpoints, show); |
8defab1a DJ |
1643 | } |
1644 | ||
7f79c47e DE |
1645 | /* For docs see target.h, to_xfer_partial. */ |
1646 | ||
9b409511 | 1647 | enum target_xfer_status |
27394598 AC |
1648 | target_xfer_partial (struct target_ops *ops, |
1649 | enum target_object object, const char *annex, | |
4ac248ca | 1650 | gdb_byte *readbuf, const gdb_byte *writebuf, |
9b409511 YQ |
1651 | ULONGEST offset, ULONGEST len, |
1652 | ULONGEST *xfered_len) | |
27394598 | 1653 | { |
9b409511 | 1654 | enum target_xfer_status retval; |
27394598 | 1655 | |
ce6d0892 YQ |
1656 | /* Transfer is done when LEN is zero. */ |
1657 | if (len == 0) | |
9b409511 | 1658 | return TARGET_XFER_EOF; |
ce6d0892 | 1659 | |
d914c394 SS |
1660 | if (writebuf && !may_write_memory) |
1661 | error (_("Writing to memory is not allowed (addr %s, len %s)"), | |
1662 | core_addr_to_string_nz (offset), plongest (len)); | |
1663 | ||
9b409511 YQ |
1664 | *xfered_len = 0; |
1665 | ||
cf7a04e8 DJ |
1666 | /* If this is a memory transfer, let the memory-specific code |
1667 | have a look at it instead. Memory transfers are more | |
1668 | complicated. */ | |
29453a14 YQ |
1669 | if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY |
1670 | || object == TARGET_OBJECT_CODE_MEMORY) | |
4e5d721f | 1671 | retval = memory_xfer_partial (ops, object, readbuf, |
9b409511 | 1672 | writebuf, offset, len, xfered_len); |
9f713294 | 1673 | else if (object == TARGET_OBJECT_RAW_MEMORY) |
cf7a04e8 | 1674 | { |
0fec99e8 PA |
1675 | /* Skip/avoid accessing the target if the memory region |
1676 | attributes block the access. Check this here instead of in | |
1677 | raw_memory_xfer_partial as otherwise we'd end up checking | |
1678 | this twice in the case of the memory_xfer_partial path is | |
1679 | taken; once before checking the dcache, and another in the | |
1680 | tail call to raw_memory_xfer_partial. */ | |
1681 | if (!memory_xfer_check_region (readbuf, writebuf, offset, len, &len, | |
1682 | NULL)) | |
1683 | return TARGET_XFER_E_IO; | |
1684 | ||
9f713294 | 1685 | /* Request the normal memory object from other layers. */ |
9b409511 YQ |
1686 | retval = raw_memory_xfer_partial (ops, readbuf, writebuf, offset, len, |
1687 | xfered_len); | |
cf7a04e8 | 1688 | } |
9f713294 | 1689 | else |
f6ac5f3d PA |
1690 | retval = ops->xfer_partial (object, annex, readbuf, |
1691 | writebuf, offset, len, xfered_len); | |
cf7a04e8 | 1692 | |
27394598 AC |
1693 | if (targetdebug) |
1694 | { | |
1695 | const unsigned char *myaddr = NULL; | |
1696 | ||
6cb06a8c TT |
1697 | gdb_printf (gdb_stdlog, |
1698 | "%s:target_xfer_partial " | |
1699 | "(%d, %s, %s, %s, %s, %s) = %d, %s", | |
1700 | ops->shortname (), | |
1701 | (int) object, | |
1702 | (annex ? annex : "(null)"), | |
1703 | host_address_to_string (readbuf), | |
1704 | host_address_to_string (writebuf), | |
1705 | core_addr_to_string_nz (offset), | |
1706 | pulongest (len), retval, | |
1707 | pulongest (*xfered_len)); | |
27394598 AC |
1708 | |
1709 | if (readbuf) | |
1710 | myaddr = readbuf; | |
1711 | if (writebuf) | |
1712 | myaddr = writebuf; | |
9b409511 | 1713 | if (retval == TARGET_XFER_OK && myaddr != NULL) |
27394598 AC |
1714 | { |
1715 | int i; | |
2bc416ba | 1716 | |
0426ad51 | 1717 | gdb_puts (", bytes =", gdb_stdlog); |
9b409511 | 1718 | for (i = 0; i < *xfered_len; i++) |
27394598 | 1719 | { |
53b71562 | 1720 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1721 | { |
1722 | if (targetdebug < 2 && i > 0) | |
1723 | { | |
6cb06a8c | 1724 | gdb_printf (gdb_stdlog, " ..."); |
27394598 AC |
1725 | break; |
1726 | } | |
6cb06a8c | 1727 | gdb_printf (gdb_stdlog, "\n"); |
27394598 | 1728 | } |
2bc416ba | 1729 | |
6cb06a8c | 1730 | gdb_printf (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
27394598 AC |
1731 | } |
1732 | } | |
2bc416ba | 1733 | |
a11ac3b3 | 1734 | gdb_putc ('\n', gdb_stdlog); |
27394598 | 1735 | } |
9b409511 YQ |
1736 | |
1737 | /* Check implementations of to_xfer_partial update *XFERED_LEN | |
1738 | properly. Do assertion after printing debug messages, so that we | |
1739 | can find more clues on assertion failure from debugging messages. */ | |
bc113b4e | 1740 | if (retval == TARGET_XFER_OK || retval == TARGET_XFER_UNAVAILABLE) |
9b409511 YQ |
1741 | gdb_assert (*xfered_len > 0); |
1742 | ||
27394598 AC |
1743 | return retval; |
1744 | } | |
1745 | ||
578d3588 PA |
1746 | /* Read LEN bytes of target memory at address MEMADDR, placing the |
1747 | results in GDB's memory at MYADDR. Returns either 0 for success or | |
d09f2c3f | 1748 | -1 if any error occurs. |
c906108c SS |
1749 | |
1750 | If an error occurs, no guarantee is made about the contents of the data at | |
1751 | MYADDR. In particular, the caller should not depend upon partial reads | |
1752 | filling the buffer with good data. There is no way for the caller to know | |
1753 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 | 1754 | deal with partial reads should call target_read (which will retry until |
c378eb4e | 1755 | it makes no progress, and then return how much was transferred). */ |
c906108c SS |
1756 | |
1757 | int | |
1b162304 | 1758 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
c906108c | 1759 | { |
328d42d8 SM |
1760 | if (target_read (current_inferior ()->top_target (), |
1761 | TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1762 | myaddr, memaddr, len) == len) |
1763 | return 0; | |
0779438d | 1764 | else |
d09f2c3f | 1765 | return -1; |
c906108c SS |
1766 | } |
1767 | ||
721ec300 GB |
1768 | /* See target/target.h. */ |
1769 | ||
1770 | int | |
1771 | target_read_uint32 (CORE_ADDR memaddr, uint32_t *result) | |
1772 | { | |
1773 | gdb_byte buf[4]; | |
1774 | int r; | |
1775 | ||
1776 | r = target_read_memory (memaddr, buf, sizeof buf); | |
1777 | if (r != 0) | |
1778 | return r; | |
99d9c3b9 SM |
1779 | *result = extract_unsigned_integer |
1780 | (buf, sizeof buf, | |
1781 | gdbarch_byte_order (current_inferior ()->arch ())); | |
721ec300 GB |
1782 | return 0; |
1783 | } | |
1784 | ||
aee4bf85 PA |
1785 | /* Like target_read_memory, but specify explicitly that this is a read |
1786 | from the target's raw memory. That is, this read bypasses the | |
1787 | dcache, breakpoint shadowing, etc. */ | |
1788 | ||
1789 | int | |
1790 | target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1791 | { | |
328d42d8 SM |
1792 | if (target_read (current_inferior ()->top_target (), |
1793 | TARGET_OBJECT_RAW_MEMORY, NULL, | |
aee4bf85 PA |
1794 | myaddr, memaddr, len) == len) |
1795 | return 0; | |
1796 | else | |
d09f2c3f | 1797 | return -1; |
aee4bf85 PA |
1798 | } |
1799 | ||
4e5d721f DE |
1800 | /* Like target_read_memory, but specify explicitly that this is a read from |
1801 | the target's stack. This may trigger different cache behavior. */ | |
1802 | ||
1803 | int | |
45aa4659 | 1804 | target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
4e5d721f | 1805 | { |
328d42d8 SM |
1806 | if (target_read (current_inferior ()->top_target (), |
1807 | TARGET_OBJECT_STACK_MEMORY, NULL, | |
4e5d721f DE |
1808 | myaddr, memaddr, len) == len) |
1809 | return 0; | |
1810 | else | |
d09f2c3f | 1811 | return -1; |
4e5d721f DE |
1812 | } |
1813 | ||
29453a14 YQ |
1814 | /* Like target_read_memory, but specify explicitly that this is a read from |
1815 | the target's code. This may trigger different cache behavior. */ | |
1816 | ||
1817 | int | |
1818 | target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1819 | { | |
328d42d8 SM |
1820 | if (target_read (current_inferior ()->top_target (), |
1821 | TARGET_OBJECT_CODE_MEMORY, NULL, | |
29453a14 YQ |
1822 | myaddr, memaddr, len) == len) |
1823 | return 0; | |
1824 | else | |
d09f2c3f | 1825 | return -1; |
29453a14 YQ |
1826 | } |
1827 | ||
7f79c47e | 1828 | /* Write LEN bytes from MYADDR to target memory at address MEMADDR. |
d09f2c3f PA |
1829 | Returns either 0 for success or -1 if any error occurs. If an |
1830 | error occurs, no guarantee is made about how much data got written. | |
1831 | Callers that can deal with partial writes should call | |
1832 | target_write. */ | |
7f79c47e | 1833 | |
c906108c | 1834 | int |
45aa4659 | 1835 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
c906108c | 1836 | { |
328d42d8 SM |
1837 | if (target_write (current_inferior ()->top_target (), |
1838 | TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1839 | myaddr, memaddr, len) == len) |
1840 | return 0; | |
0779438d | 1841 | else |
d09f2c3f | 1842 | return -1; |
c906108c | 1843 | } |
c5aa993b | 1844 | |
f0ba3972 | 1845 | /* Write LEN bytes from MYADDR to target raw memory at address |
d09f2c3f PA |
1846 | MEMADDR. Returns either 0 for success or -1 if any error occurs. |
1847 | If an error occurs, no guarantee is made about how much data got | |
1848 | written. Callers that can deal with partial writes should call | |
1849 | target_write. */ | |
f0ba3972 PA |
1850 | |
1851 | int | |
45aa4659 | 1852 | target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
f0ba3972 | 1853 | { |
328d42d8 SM |
1854 | if (target_write (current_inferior ()->top_target (), |
1855 | TARGET_OBJECT_RAW_MEMORY, NULL, | |
f0ba3972 PA |
1856 | myaddr, memaddr, len) == len) |
1857 | return 0; | |
1858 | else | |
d09f2c3f | 1859 | return -1; |
f0ba3972 PA |
1860 | } |
1861 | ||
fd79ecee DJ |
1862 | /* Fetch the target's memory map. */ |
1863 | ||
a664f67e | 1864 | std::vector<mem_region> |
fd79ecee DJ |
1865 | target_memory_map (void) |
1866 | { | |
328d42d8 SM |
1867 | target_ops *target = current_inferior ()->top_target (); |
1868 | std::vector<mem_region> result = target->memory_map (); | |
a664f67e SM |
1869 | if (result.empty ()) |
1870 | return result; | |
fd79ecee | 1871 | |
a664f67e | 1872 | std::sort (result.begin (), result.end ()); |
fd79ecee DJ |
1873 | |
1874 | /* Check that regions do not overlap. Simultaneously assign | |
1875 | a numbering for the "mem" commands to use to refer to | |
1876 | each region. */ | |
a664f67e SM |
1877 | mem_region *last_one = NULL; |
1878 | for (size_t ix = 0; ix < result.size (); ix++) | |
fd79ecee | 1879 | { |
a664f67e | 1880 | mem_region *this_one = &result[ix]; |
fd79ecee DJ |
1881 | this_one->number = ix; |
1882 | ||
a664f67e | 1883 | if (last_one != NULL && last_one->hi > this_one->lo) |
fd79ecee DJ |
1884 | { |
1885 | warning (_("Overlapping regions in memory map: ignoring")); | |
a664f67e | 1886 | return std::vector<mem_region> (); |
fd79ecee | 1887 | } |
a664f67e | 1888 | |
fd79ecee DJ |
1889 | last_one = this_one; |
1890 | } | |
1891 | ||
1892 | return result; | |
1893 | } | |
1894 | ||
a76d924d DJ |
1895 | void |
1896 | target_flash_erase (ULONGEST address, LONGEST length) | |
1897 | { | |
328d42d8 | 1898 | current_inferior ()->top_target ()->flash_erase (address, length); |
a76d924d DJ |
1899 | } |
1900 | ||
1901 | void | |
1902 | target_flash_done (void) | |
1903 | { | |
328d42d8 | 1904 | current_inferior ()->top_target ()->flash_done (); |
a76d924d DJ |
1905 | } |
1906 | ||
920d2a44 AC |
1907 | static void |
1908 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1909 | struct cmd_list_element *c, const char *value) | |
1910 | { | |
6cb06a8c TT |
1911 | gdb_printf (file, |
1912 | _("Mode for reading from readonly sections is %s.\n"), | |
1913 | value); | |
920d2a44 | 1914 | } |
3a11626d | 1915 | |
7f79c47e | 1916 | /* Target vector read/write partial wrapper functions. */ |
0088c768 | 1917 | |
9b409511 | 1918 | static enum target_xfer_status |
1e3ff5ad AC |
1919 | target_read_partial (struct target_ops *ops, |
1920 | enum target_object object, | |
1b0ba102 | 1921 | const char *annex, gdb_byte *buf, |
9b409511 YQ |
1922 | ULONGEST offset, ULONGEST len, |
1923 | ULONGEST *xfered_len) | |
1e3ff5ad | 1924 | { |
9b409511 YQ |
1925 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len, |
1926 | xfered_len); | |
1e3ff5ad AC |
1927 | } |
1928 | ||
8a55ffb0 | 1929 | static enum target_xfer_status |
1e3ff5ad AC |
1930 | target_write_partial (struct target_ops *ops, |
1931 | enum target_object object, | |
1b0ba102 | 1932 | const char *annex, const gdb_byte *buf, |
9b409511 | 1933 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len) |
1e3ff5ad | 1934 | { |
9b409511 YQ |
1935 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len, |
1936 | xfered_len); | |
1e3ff5ad AC |
1937 | } |
1938 | ||
1939 | /* Wrappers to perform the full transfer. */ | |
7f79c47e DE |
1940 | |
1941 | /* For docs on target_read see target.h. */ | |
1942 | ||
1e3ff5ad AC |
1943 | LONGEST |
1944 | target_read (struct target_ops *ops, | |
1945 | enum target_object object, | |
1b0ba102 | 1946 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1947 | ULONGEST offset, LONGEST len) |
1948 | { | |
279a6fed | 1949 | LONGEST xfered_total = 0; |
d309493c SM |
1950 | int unit_size = 1; |
1951 | ||
1952 | /* If we are reading from a memory object, find the length of an addressable | |
1953 | unit for that architecture. */ | |
1954 | if (object == TARGET_OBJECT_MEMORY | |
1955 | || object == TARGET_OBJECT_STACK_MEMORY | |
1956 | || object == TARGET_OBJECT_CODE_MEMORY | |
1957 | || object == TARGET_OBJECT_RAW_MEMORY) | |
99d9c3b9 SM |
1958 | unit_size = gdbarch_addressable_memory_unit_size |
1959 | (current_inferior ()->arch ()); | |
5d502164 | 1960 | |
279a6fed | 1961 | while (xfered_total < len) |
1e3ff5ad | 1962 | { |
279a6fed | 1963 | ULONGEST xfered_partial; |
9b409511 YQ |
1964 | enum target_xfer_status status; |
1965 | ||
1966 | status = target_read_partial (ops, object, annex, | |
d309493c | 1967 | buf + xfered_total * unit_size, |
279a6fed SM |
1968 | offset + xfered_total, len - xfered_total, |
1969 | &xfered_partial); | |
5d502164 | 1970 | |
1e3ff5ad | 1971 | /* Call an observer, notifying them of the xfer progress? */ |
9b409511 | 1972 | if (status == TARGET_XFER_EOF) |
279a6fed | 1973 | return xfered_total; |
9b409511 YQ |
1974 | else if (status == TARGET_XFER_OK) |
1975 | { | |
279a6fed | 1976 | xfered_total += xfered_partial; |
9b409511 YQ |
1977 | QUIT; |
1978 | } | |
1979 | else | |
279a6fed | 1980 | return TARGET_XFER_E_IO; |
9b409511 | 1981 | |
1e3ff5ad AC |
1982 | } |
1983 | return len; | |
1984 | } | |
1985 | ||
f1a507a1 JB |
1986 | /* Assuming that the entire [begin, end) range of memory cannot be |
1987 | read, try to read whatever subrange is possible to read. | |
1988 | ||
1989 | The function returns, in RESULT, either zero or one memory block. | |
1990 | If there's a readable subrange at the beginning, it is completely | |
1991 | read and returned. Any further readable subrange will not be read. | |
1992 | Otherwise, if there's a readable subrange at the end, it will be | |
1993 | completely read and returned. Any readable subranges before it | |
1994 | (obviously, not starting at the beginning), will be ignored. In | |
1995 | other cases -- either no readable subrange, or readable subrange(s) | |
1996 | that is neither at the beginning, or end, nothing is returned. | |
1997 | ||
1998 | The purpose of this function is to handle a read across a boundary | |
1999 | of accessible memory in a case when memory map is not available. | |
2000 | The above restrictions are fine for this case, but will give | |
2001 | incorrect results if the memory is 'patchy'. However, supporting | |
2002 | 'patchy' memory would require trying to read every single byte, | |
2003 | and it seems unacceptable solution. Explicit memory map is | |
2004 | recommended for this case -- and target_read_memory_robust will | |
2005 | take care of reading multiple ranges then. */ | |
8dedea02 VP |
2006 | |
2007 | static void | |
3e43a32a | 2008 | read_whatever_is_readable (struct target_ops *ops, |
279a6fed | 2009 | const ULONGEST begin, const ULONGEST end, |
d309493c | 2010 | int unit_size, |
386c8614 | 2011 | std::vector<memory_read_result> *result) |
d5086790 | 2012 | { |
8dedea02 VP |
2013 | ULONGEST current_begin = begin; |
2014 | ULONGEST current_end = end; | |
2015 | int forward; | |
9b409511 | 2016 | ULONGEST xfered_len; |
8dedea02 VP |
2017 | |
2018 | /* If we previously failed to read 1 byte, nothing can be done here. */ | |
2019 | if (end - begin <= 1) | |
386c8614 TT |
2020 | return; |
2021 | ||
2022 | gdb::unique_xmalloc_ptr<gdb_byte> buf ((gdb_byte *) xmalloc (end - begin)); | |
8dedea02 VP |
2023 | |
2024 | /* Check that either first or the last byte is readable, and give up | |
c378eb4e | 2025 | if not. This heuristic is meant to permit reading accessible memory |
8dedea02 VP |
2026 | at the boundary of accessible region. */ |
2027 | if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
386c8614 | 2028 | buf.get (), begin, 1, &xfered_len) == TARGET_XFER_OK) |
8dedea02 VP |
2029 | { |
2030 | forward = 1; | |
2031 | ++current_begin; | |
2032 | } | |
2033 | else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
386c8614 | 2034 | buf.get () + (end - begin) - 1, end - 1, 1, |
9b409511 | 2035 | &xfered_len) == TARGET_XFER_OK) |
8dedea02 VP |
2036 | { |
2037 | forward = 0; | |
2038 | --current_end; | |
2039 | } | |
2040 | else | |
386c8614 | 2041 | return; |
8dedea02 VP |
2042 | |
2043 | /* Loop invariant is that the [current_begin, current_end) was previously | |
2044 | found to be not readable as a whole. | |
2045 | ||
2046 | Note loop condition -- if the range has 1 byte, we can't divide the range | |
2047 | so there's no point trying further. */ | |
2048 | while (current_end - current_begin > 1) | |
2049 | { | |
2050 | ULONGEST first_half_begin, first_half_end; | |
2051 | ULONGEST second_half_begin, second_half_end; | |
2052 | LONGEST xfer; | |
279a6fed | 2053 | ULONGEST middle = current_begin + (current_end - current_begin) / 2; |
f1a507a1 | 2054 | |
8dedea02 VP |
2055 | if (forward) |
2056 | { | |
2057 | first_half_begin = current_begin; | |
2058 | first_half_end = middle; | |
2059 | second_half_begin = middle; | |
2060 | second_half_end = current_end; | |
2061 | } | |
2062 | else | |
2063 | { | |
2064 | first_half_begin = middle; | |
2065 | first_half_end = current_end; | |
2066 | second_half_begin = current_begin; | |
2067 | second_half_end = middle; | |
2068 | } | |
2069 | ||
2070 | xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
386c8614 | 2071 | buf.get () + (first_half_begin - begin) * unit_size, |
8dedea02 VP |
2072 | first_half_begin, |
2073 | first_half_end - first_half_begin); | |
2074 | ||
2075 | if (xfer == first_half_end - first_half_begin) | |
2076 | { | |
c378eb4e | 2077 | /* This half reads up fine. So, the error must be in the |
3e43a32a | 2078 | other half. */ |
8dedea02 VP |
2079 | current_begin = second_half_begin; |
2080 | current_end = second_half_end; | |
2081 | } | |
2082 | else | |
2083 | { | |
c378eb4e | 2084 | /* This half is not readable. Because we've tried one byte, we |
279a6fed | 2085 | know some part of this half if actually readable. Go to the next |
8dedea02 VP |
2086 | iteration to divide again and try to read. |
2087 | ||
2088 | We don't handle the other half, because this function only tries | |
2089 | to read a single readable subrange. */ | |
2090 | current_begin = first_half_begin; | |
2091 | current_end = first_half_end; | |
2092 | } | |
2093 | } | |
2094 | ||
2095 | if (forward) | |
2096 | { | |
2097 | /* The [begin, current_begin) range has been read. */ | |
386c8614 | 2098 | result->emplace_back (begin, current_end, std::move (buf)); |
8dedea02 VP |
2099 | } |
2100 | else | |
2101 | { | |
2102 | /* The [current_end, end) range has been read. */ | |
279a6fed | 2103 | LONGEST region_len = end - current_end; |
f1a507a1 | 2104 | |
386c8614 TT |
2105 | gdb::unique_xmalloc_ptr<gdb_byte> data |
2106 | ((gdb_byte *) xmalloc (region_len * unit_size)); | |
2107 | memcpy (data.get (), buf.get () + (current_end - begin) * unit_size, | |
d309493c | 2108 | region_len * unit_size); |
386c8614 | 2109 | result->emplace_back (current_end, end, std::move (data)); |
8dedea02 | 2110 | } |
8dedea02 VP |
2111 | } |
2112 | ||
386c8614 | 2113 | std::vector<memory_read_result> |
279a6fed SM |
2114 | read_memory_robust (struct target_ops *ops, |
2115 | const ULONGEST offset, const LONGEST len) | |
8dedea02 | 2116 | { |
386c8614 | 2117 | std::vector<memory_read_result> result; |
99d9c3b9 SM |
2118 | int unit_size |
2119 | = gdbarch_addressable_memory_unit_size (current_inferior ()->arch ()); | |
8dedea02 | 2120 | |
279a6fed SM |
2121 | LONGEST xfered_total = 0; |
2122 | while (xfered_total < len) | |
d5086790 | 2123 | { |
279a6fed SM |
2124 | struct mem_region *region = lookup_mem_region (offset + xfered_total); |
2125 | LONGEST region_len; | |
5d502164 | 2126 | |
8dedea02 VP |
2127 | /* If there is no explicit region, a fake one should be created. */ |
2128 | gdb_assert (region); | |
2129 | ||
2130 | if (region->hi == 0) | |
279a6fed | 2131 | region_len = len - xfered_total; |
8dedea02 | 2132 | else |
279a6fed | 2133 | region_len = region->hi - offset; |
8dedea02 VP |
2134 | |
2135 | if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO) | |
d5086790 | 2136 | { |
c378eb4e | 2137 | /* Cannot read this region. Note that we can end up here only |
8dedea02 VP |
2138 | if the region is explicitly marked inaccessible, or |
2139 | 'inaccessible-by-default' is in effect. */ | |
279a6fed | 2140 | xfered_total += region_len; |
8dedea02 VP |
2141 | } |
2142 | else | |
2143 | { | |
325fac50 | 2144 | LONGEST to_read = std::min (len - xfered_total, region_len); |
386c8614 TT |
2145 | gdb::unique_xmalloc_ptr<gdb_byte> buffer |
2146 | ((gdb_byte *) xmalloc (to_read * unit_size)); | |
8dedea02 | 2147 | |
279a6fed | 2148 | LONGEST xfered_partial = |
386c8614 | 2149 | target_read (ops, TARGET_OBJECT_MEMORY, NULL, buffer.get (), |
279a6fed | 2150 | offset + xfered_total, to_read); |
8dedea02 | 2151 | /* Call an observer, notifying them of the xfer progress? */ |
279a6fed | 2152 | if (xfered_partial <= 0) |
d5086790 | 2153 | { |
c378eb4e | 2154 | /* Got an error reading full chunk. See if maybe we can read |
8dedea02 | 2155 | some subrange. */ |
e084c964 DB |
2156 | read_whatever_is_readable (ops, offset + xfered_total, |
2157 | offset + xfered_total + to_read, | |
2158 | unit_size, &result); | |
279a6fed | 2159 | xfered_total += to_read; |
d5086790 | 2160 | } |
8dedea02 VP |
2161 | else |
2162 | { | |
386c8614 TT |
2163 | result.emplace_back (offset + xfered_total, |
2164 | offset + xfered_total + xfered_partial, | |
2165 | std::move (buffer)); | |
279a6fed | 2166 | xfered_total += xfered_partial; |
8dedea02 VP |
2167 | } |
2168 | QUIT; | |
d5086790 | 2169 | } |
d5086790 | 2170 | } |
9d78f827 | 2171 | |
8dedea02 | 2172 | return result; |
d5086790 VP |
2173 | } |
2174 | ||
8dedea02 | 2175 | |
cf7a04e8 DJ |
2176 | /* An alternative to target_write with progress callbacks. */ |
2177 | ||
1e3ff5ad | 2178 | LONGEST |
cf7a04e8 DJ |
2179 | target_write_with_progress (struct target_ops *ops, |
2180 | enum target_object object, | |
2181 | const char *annex, const gdb_byte *buf, | |
2182 | ULONGEST offset, LONGEST len, | |
2183 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad | 2184 | { |
279a6fed | 2185 | LONGEST xfered_total = 0; |
d309493c SM |
2186 | int unit_size = 1; |
2187 | ||
2188 | /* If we are writing to a memory object, find the length of an addressable | |
2189 | unit for that architecture. */ | |
2190 | if (object == TARGET_OBJECT_MEMORY | |
2191 | || object == TARGET_OBJECT_STACK_MEMORY | |
2192 | || object == TARGET_OBJECT_CODE_MEMORY | |
2193 | || object == TARGET_OBJECT_RAW_MEMORY) | |
99d9c3b9 SM |
2194 | unit_size = gdbarch_addressable_memory_unit_size |
2195 | (current_inferior ()->arch ()); | |
a76d924d DJ |
2196 | |
2197 | /* Give the progress callback a chance to set up. */ | |
2198 | if (progress) | |
2199 | (*progress) (0, baton); | |
2200 | ||
279a6fed | 2201 | while (xfered_total < len) |
1e3ff5ad | 2202 | { |
279a6fed | 2203 | ULONGEST xfered_partial; |
9b409511 YQ |
2204 | enum target_xfer_status status; |
2205 | ||
2206 | status = target_write_partial (ops, object, annex, | |
d309493c | 2207 | buf + xfered_total * unit_size, |
279a6fed SM |
2208 | offset + xfered_total, len - xfered_total, |
2209 | &xfered_partial); | |
cf7a04e8 | 2210 | |
5c328c05 | 2211 | if (status != TARGET_XFER_OK) |
279a6fed | 2212 | return status == TARGET_XFER_EOF ? xfered_total : TARGET_XFER_E_IO; |
cf7a04e8 DJ |
2213 | |
2214 | if (progress) | |
279a6fed | 2215 | (*progress) (xfered_partial, baton); |
cf7a04e8 | 2216 | |
279a6fed | 2217 | xfered_total += xfered_partial; |
1e3ff5ad AC |
2218 | QUIT; |
2219 | } | |
2220 | return len; | |
2221 | } | |
2222 | ||
7f79c47e DE |
2223 | /* For docs on target_write see target.h. */ |
2224 | ||
cf7a04e8 DJ |
2225 | LONGEST |
2226 | target_write (struct target_ops *ops, | |
2227 | enum target_object object, | |
2228 | const char *annex, const gdb_byte *buf, | |
2229 | ULONGEST offset, LONGEST len) | |
2230 | { | |
2231 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
2232 | NULL, NULL); | |
2233 | } | |
2234 | ||
9018be22 SM |
2235 | /* Help for target_read_alloc and target_read_stralloc. See their comments |
2236 | for details. */ | |
13547ab6 | 2237 | |
9018be22 | 2238 | template <typename T> |
6b09f134 | 2239 | std::optional<gdb::def_vector<T>> |
159f81f3 | 2240 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, |
9018be22 | 2241 | const char *annex) |
13547ab6 | 2242 | { |
9018be22 SM |
2243 | gdb::def_vector<T> buf; |
2244 | size_t buf_pos = 0; | |
2245 | const int chunk = 4096; | |
13547ab6 DJ |
2246 | |
2247 | /* This function does not have a length parameter; it reads the | |
2248 | entire OBJECT). Also, it doesn't support objects fetched partly | |
2249 | from one target and partly from another (in a different stratum, | |
2250 | e.g. a core file and an executable). Both reasons make it | |
2251 | unsuitable for reading memory. */ | |
2252 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
2253 | ||
2254 | /* Start by reading up to 4K at a time. The target will throttle | |
2255 | this number down if necessary. */ | |
13547ab6 DJ |
2256 | while (1) |
2257 | { | |
9b409511 YQ |
2258 | ULONGEST xfered_len; |
2259 | enum target_xfer_status status; | |
2260 | ||
9018be22 SM |
2261 | buf.resize (buf_pos + chunk); |
2262 | ||
2263 | status = target_read_partial (ops, object, annex, | |
2264 | (gdb_byte *) &buf[buf_pos], | |
2265 | buf_pos, chunk, | |
9b409511 YQ |
2266 | &xfered_len); |
2267 | ||
2268 | if (status == TARGET_XFER_EOF) | |
13547ab6 DJ |
2269 | { |
2270 | /* Read all there was. */ | |
9018be22 SM |
2271 | buf.resize (buf_pos); |
2272 | return buf; | |
13547ab6 | 2273 | } |
9b409511 YQ |
2274 | else if (status != TARGET_XFER_OK) |
2275 | { | |
2276 | /* An error occurred. */ | |
9018be22 | 2277 | return {}; |
9b409511 | 2278 | } |
13547ab6 | 2279 | |
9b409511 | 2280 | buf_pos += xfered_len; |
13547ab6 | 2281 | |
13547ab6 DJ |
2282 | QUIT; |
2283 | } | |
2284 | } | |
2285 | ||
9018be22 | 2286 | /* See target.h */ |
159f81f3 | 2287 | |
6b09f134 | 2288 | std::optional<gdb::byte_vector> |
159f81f3 | 2289 | target_read_alloc (struct target_ops *ops, enum target_object object, |
9018be22 | 2290 | const char *annex) |
159f81f3 | 2291 | { |
9018be22 | 2292 | return target_read_alloc_1<gdb_byte> (ops, object, annex); |
159f81f3 DJ |
2293 | } |
2294 | ||
b7b030ad | 2295 | /* See target.h. */ |
159f81f3 | 2296 | |
6b09f134 | 2297 | std::optional<gdb::char_vector> |
159f81f3 DJ |
2298 | target_read_stralloc (struct target_ops *ops, enum target_object object, |
2299 | const char *annex) | |
2300 | { | |
6b09f134 | 2301 | std::optional<gdb::char_vector> buf |
9018be22 | 2302 | = target_read_alloc_1<char> (ops, object, annex); |
159f81f3 | 2303 | |
9018be22 SM |
2304 | if (!buf) |
2305 | return {}; | |
159f81f3 | 2306 | |
d00a27c5 | 2307 | if (buf->empty () || buf->back () != '\0') |
9018be22 | 2308 | buf->push_back ('\0'); |
7313baad UW |
2309 | |
2310 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
9018be22 SM |
2311 | for (auto it = std::find (buf->begin (), buf->end (), '\0'); |
2312 | it != buf->end (); it++) | |
2313 | if (*it != '\0') | |
7313baad UW |
2314 | { |
2315 | warning (_("target object %d, annex %s, " | |
2316 | "contained unexpected null characters"), | |
2317 | (int) object, annex ? annex : "(none)"); | |
2318 | break; | |
2319 | } | |
159f81f3 | 2320 | |
9018be22 | 2321 | return buf; |
159f81f3 DJ |
2322 | } |
2323 | ||
b6591e8b AC |
2324 | /* Memory transfer methods. */ |
2325 | ||
2326 | void | |
1b0ba102 | 2327 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
2328 | LONGEST len) |
2329 | { | |
07b82ea5 PA |
2330 | /* This method is used to read from an alternate, non-current |
2331 | target. This read must bypass the overlay support (as symbols | |
2332 | don't match this target), and GDB's internal cache (wrong cache | |
2333 | for this target). */ | |
2334 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) | |
b6591e8b | 2335 | != len) |
578d3588 | 2336 | memory_error (TARGET_XFER_E_IO, addr); |
b6591e8b AC |
2337 | } |
2338 | ||
2339 | ULONGEST | |
5d502164 MS |
2340 | get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr, |
2341 | int len, enum bfd_endian byte_order) | |
b6591e8b | 2342 | { |
f6519ebc | 2343 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
2344 | |
2345 | gdb_assert (len <= sizeof (buf)); | |
2346 | get_target_memory (ops, addr, buf, len); | |
e17a4113 | 2347 | return extract_unsigned_integer (buf, len, byte_order); |
b6591e8b AC |
2348 | } |
2349 | ||
3db08215 MM |
2350 | /* See target.h. */ |
2351 | ||
d914c394 SS |
2352 | int |
2353 | target_insert_breakpoint (struct gdbarch *gdbarch, | |
2354 | struct bp_target_info *bp_tgt) | |
2355 | { | |
2356 | if (!may_insert_breakpoints) | |
2357 | { | |
2358 | warning (_("May not insert breakpoints")); | |
2359 | return 1; | |
2360 | } | |
2361 | ||
328d42d8 SM |
2362 | target_ops *target = current_inferior ()->top_target (); |
2363 | ||
2364 | return target->insert_breakpoint (gdbarch, bp_tgt); | |
d914c394 SS |
2365 | } |
2366 | ||
3db08215 MM |
2367 | /* See target.h. */ |
2368 | ||
d914c394 | 2369 | int |
6b84065d | 2370 | target_remove_breakpoint (struct gdbarch *gdbarch, |
73971819 PA |
2371 | struct bp_target_info *bp_tgt, |
2372 | enum remove_bp_reason reason) | |
d914c394 SS |
2373 | { |
2374 | /* This is kind of a weird case to handle, but the permission might | |
2375 | have been changed after breakpoints were inserted - in which case | |
2376 | we should just take the user literally and assume that any | |
2377 | breakpoints should be left in place. */ | |
2378 | if (!may_insert_breakpoints) | |
2379 | { | |
2380 | warning (_("May not remove breakpoints")); | |
2381 | return 1; | |
2382 | } | |
2383 | ||
328d42d8 SM |
2384 | target_ops *target = current_inferior ()->top_target (); |
2385 | ||
2386 | return target->remove_breakpoint (gdbarch, bp_tgt, reason); | |
d914c394 SS |
2387 | } |
2388 | ||
c906108c | 2389 | static void |
1d12d88f | 2390 | info_target_command (const char *args, int from_tty) |
c906108c | 2391 | { |
c906108c | 2392 | int has_all_mem = 0; |
c5aa993b | 2393 | |
a42d7dd8 TT |
2394 | if (current_program_space->symfile_object_file != NULL) |
2395 | { | |
2396 | objfile *objf = current_program_space->symfile_object_file; | |
6cb06a8c TT |
2397 | gdb_printf (_("Symbols from \"%s\".\n"), |
2398 | objfile_name (objf)); | |
a42d7dd8 | 2399 | } |
c906108c | 2400 | |
328d42d8 SM |
2401 | for (target_ops *t = current_inferior ()->top_target (); |
2402 | t != NULL; | |
2403 | t = t->beneath ()) | |
c906108c | 2404 | { |
f6ac5f3d | 2405 | if (!t->has_memory ()) |
c906108c SS |
2406 | continue; |
2407 | ||
66b4deae | 2408 | if ((int) (t->stratum ()) <= (int) dummy_stratum) |
c906108c SS |
2409 | continue; |
2410 | if (has_all_mem) | |
6cb06a8c TT |
2411 | gdb_printf (_("\tWhile running this, " |
2412 | "GDB does not access memory from...\n")); | |
2413 | gdb_printf ("%s:\n", t->longname ()); | |
f6ac5f3d PA |
2414 | t->files_info (); |
2415 | has_all_mem = t->has_all_memory (); | |
c906108c SS |
2416 | } |
2417 | } | |
2418 | ||
fd79ecee DJ |
2419 | /* This function is called before any new inferior is created, e.g. |
2420 | by running a program, attaching, or connecting to a target. | |
2421 | It cleans up any state from previous invocations which might | |
2422 | change between runs. This is a subset of what target_preopen | |
2423 | resets (things which might change between targets). */ | |
2424 | ||
2425 | void | |
2426 | target_pre_inferior (int from_tty) | |
2427 | { | |
c378eb4e | 2428 | /* Clear out solib state. Otherwise the solib state of the previous |
b9db4ced | 2429 | inferior might have survived and is entirely wrong for the new |
c378eb4e | 2430 | target. This has been observed on GNU/Linux using glibc 2.3. How |
b9db4ced UW |
2431 | to reproduce: |
2432 | ||
2433 | bash$ ./foo& | |
2434 | [1] 4711 | |
2435 | bash$ ./foo& | |
2436 | [1] 4712 | |
2437 | bash$ gdb ./foo | |
2438 | [...] | |
2439 | (gdb) attach 4711 | |
2440 | (gdb) detach | |
2441 | (gdb) attach 4712 | |
2442 | Cannot access memory at address 0xdeadbeef | |
2443 | */ | |
b9db4ced | 2444 | |
50c71eaf PA |
2445 | /* In some OSs, the shared library list is the same/global/shared |
2446 | across inferiors. If code is shared between processes, so are | |
2447 | memory regions and features. */ | |
99d9c3b9 | 2448 | if (!gdbarch_has_global_solist (current_inferior ()->arch ())) |
50c71eaf PA |
2449 | { |
2450 | no_shared_libraries (NULL, from_tty); | |
2451 | ||
2452 | invalidate_target_mem_regions (); | |
424163ea | 2453 | |
50c71eaf PA |
2454 | target_clear_description (); |
2455 | } | |
8ffcbaaf | 2456 | |
e9756d52 PP |
2457 | /* attach_flag may be set if the previous process associated with |
2458 | the inferior was attached to. */ | |
30220b46 | 2459 | current_inferior ()->attach_flag = false; |
e9756d52 | 2460 | |
5d5658a1 PA |
2461 | current_inferior ()->highest_thread_num = 0; |
2462 | ||
a81871f7 PA |
2463 | update_previous_thread (); |
2464 | ||
8ffcbaaf | 2465 | agent_capability_invalidate (); |
fd79ecee DJ |
2466 | } |
2467 | ||
c906108c SS |
2468 | /* This is to be called by the open routine before it does |
2469 | anything. */ | |
2470 | ||
2471 | void | |
fba45db2 | 2472 | target_preopen (int from_tty) |
c906108c | 2473 | { |
c5aa993b | 2474 | dont_repeat (); |
c906108c | 2475 | |
5b6d1e4f | 2476 | if (current_inferior ()->pid != 0) |
c5aa993b | 2477 | { |
adf40b2e | 2478 | if (!from_tty |
55f6301a | 2479 | || !target_has_execution () |
b8fa0bfa | 2480 | || query (_("A program is being debugged already. Kill it? "))) |
5b6d1e4f PA |
2481 | { |
2482 | /* Core inferiors actually should be detached, not | |
2483 | killed. */ | |
55f6301a | 2484 | if (target_has_execution ()) |
5b6d1e4f PA |
2485 | target_kill (); |
2486 | else | |
2487 | target_detach (current_inferior (), 0); | |
2488 | } | |
c906108c | 2489 | else |
8a3fe4f8 | 2490 | error (_("Program not killed.")); |
c906108c SS |
2491 | } |
2492 | ||
a81871f7 PA |
2493 | /* Release reference to old previous thread. */ |
2494 | update_previous_thread (); | |
2495 | ||
c906108c SS |
2496 | /* Calling target_kill may remove the target from the stack. But if |
2497 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
2498 | /* Leave the exec target, though. The user may be switching from a |
2499 | live process to a core of the same program. */ | |
c8181f70 | 2500 | current_inferior ()->pop_all_targets_above (file_stratum); |
fd79ecee DJ |
2501 | |
2502 | target_pre_inferior (from_tty); | |
c906108c SS |
2503 | } |
2504 | ||
6bd6f3b6 | 2505 | /* See target.h. */ |
c906108c SS |
2506 | |
2507 | void | |
6e1e1966 | 2508 | target_detach (inferior *inf, int from_tty) |
c906108c | 2509 | { |
ddff2a2d AB |
2510 | /* Thread's don't need to be resumed until the end of this function. */ |
2511 | scoped_disable_commit_resumed disable_commit_resumed ("detaching"); | |
2512 | ||
5783e150 PW |
2513 | /* After we have detached, we will clear the register cache for this inferior |
2514 | by calling registers_changed_ptid. We must save the pid_ptid before | |
2515 | detaching, as the target detach method will clear inf->pid. */ | |
2516 | ptid_t save_pid_ptid = ptid_t (inf->pid); | |
2517 | ||
6e1e1966 | 2518 | /* As long as some to_detach implementations rely on the current_inferior |
99d9c3b9 SM |
2519 | (either directly, or indirectly, like through reading memory), INF needs |
2520 | to be the current inferior. When that requirement will become no longer | |
2521 | true, then we can remove this assertion. */ | |
6e1e1966 SM |
2522 | gdb_assert (inf == current_inferior ()); |
2523 | ||
24291992 PA |
2524 | prepare_for_detach (); |
2525 | ||
9056c917 SM |
2526 | gdb::observers::inferior_pre_detach.notify (inf); |
2527 | ||
5b6d1e4f PA |
2528 | /* Hold a strong reference because detaching may unpush the |
2529 | target. */ | |
2530 | auto proc_target_ref = target_ops_ref::new_reference (inf->process_target ()); | |
2531 | ||
328d42d8 | 2532 | current_inferior ()->top_target ()->detach (inf, from_tty); |
799efbe8 | 2533 | |
5b6d1e4f PA |
2534 | process_stratum_target *proc_target |
2535 | = as_process_stratum_target (proc_target_ref.get ()); | |
2536 | ||
2537 | registers_changed_ptid (proc_target, save_pid_ptid); | |
799efbe8 PW |
2538 | |
2539 | /* We have to ensure we have no frame cache left. Normally, | |
5783e150 PW |
2540 | registers_changed_ptid (save_pid_ptid) calls reinit_frame_cache when |
2541 | inferior_ptid matches save_pid_ptid, but in our case, it does not | |
799efbe8 PW |
2542 | call it, as inferior_ptid has been reset. */ |
2543 | reinit_frame_cache (); | |
ddff2a2d AB |
2544 | |
2545 | disable_commit_resumed.reset_and_commit (); | |
c906108c SS |
2546 | } |
2547 | ||
6ad8ae5c | 2548 | void |
fee354ee | 2549 | target_disconnect (const char *args, int from_tty) |
6ad8ae5c | 2550 | { |
50c71eaf PA |
2551 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
2552 | are global across processes, we have to remove them before | |
2553 | disconnecting. */ | |
74960c60 VP |
2554 | remove_breakpoints (); |
2555 | ||
328d42d8 | 2556 | current_inferior ()->top_target ()->disconnect (args, from_tty); |
6ad8ae5c DJ |
2557 | } |
2558 | ||
f2b9e3df SDJ |
2559 | /* See target/target.h. */ |
2560 | ||
117de6a9 | 2561 | ptid_t |
b60cea74 TT |
2562 | target_wait (ptid_t ptid, struct target_waitstatus *status, |
2563 | target_wait_flags options) | |
117de6a9 | 2564 | { |
328d42d8 | 2565 | target_ops *target = current_inferior ()->top_target (); |
1192f124 SM |
2566 | process_stratum_target *proc_target = current_inferior ()->process_target (); |
2567 | ||
2568 | gdb_assert (!proc_target->commit_resumed_state); | |
d3a07122 | 2569 | |
0c1e6e26 | 2570 | if (!target_can_async_p (target)) |
d3a07122 SM |
2571 | gdb_assert ((options & TARGET_WNOHANG) == 0); |
2572 | ||
fb85cece PM |
2573 | try |
2574 | { | |
2575 | gdb::observers::target_pre_wait.notify (ptid); | |
2576 | ptid_t event_ptid = target->wait (ptid, status, options); | |
2577 | gdb::observers::target_post_wait.notify (event_ptid); | |
2578 | return event_ptid; | |
2579 | } | |
2580 | catch (...) | |
2581 | { | |
2582 | gdb::observers::target_post_wait.notify (null_ptid); | |
2583 | throw; | |
2584 | } | |
117de6a9 PA |
2585 | } |
2586 | ||
0b333c5e PA |
2587 | /* See target.h. */ |
2588 | ||
2589 | ptid_t | |
2590 | default_target_wait (struct target_ops *ops, | |
2591 | ptid_t ptid, struct target_waitstatus *status, | |
b60cea74 | 2592 | target_wait_flags options) |
0b333c5e | 2593 | { |
183be222 | 2594 | status->set_ignore (); |
0b333c5e PA |
2595 | return minus_one_ptid; |
2596 | } | |
2597 | ||
a068643d | 2598 | std::string |
117de6a9 PA |
2599 | target_pid_to_str (ptid_t ptid) |
2600 | { | |
328d42d8 | 2601 | return current_inferior ()->top_target ()->pid_to_str (ptid); |
117de6a9 PA |
2602 | } |
2603 | ||
73ede765 | 2604 | const char * |
4694da01 TT |
2605 | target_thread_name (struct thread_info *info) |
2606 | { | |
5b6d1e4f PA |
2607 | gdb_assert (info->inf == current_inferior ()); |
2608 | ||
328d42d8 | 2609 | return current_inferior ()->top_target ()->thread_name (info); |
4694da01 TT |
2610 | } |
2611 | ||
e04ee09e KB |
2612 | struct thread_info * |
2613 | target_thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
2614 | int handle_len, | |
2615 | struct inferior *inf) | |
2616 | { | |
328d42d8 SM |
2617 | target_ops *target = current_inferior ()->top_target (); |
2618 | ||
2619 | return target->thread_handle_to_thread_info (thread_handle, handle_len, inf); | |
e04ee09e KB |
2620 | } |
2621 | ||
3d6c6204 KB |
2622 | /* See target.h. */ |
2623 | ||
1f08d324 | 2624 | gdb::array_view<const gdb_byte> |
3d6c6204 KB |
2625 | target_thread_info_to_thread_handle (struct thread_info *tip) |
2626 | { | |
328d42d8 SM |
2627 | target_ops *target = current_inferior ()->top_target (); |
2628 | ||
2629 | return target->thread_info_to_thread_handle (tip); | |
3d6c6204 KB |
2630 | } |
2631 | ||
e1ac3328 | 2632 | void |
d51926f0 | 2633 | target_resume (ptid_t scope_ptid, int step, enum gdb_signal signal) |
e1ac3328 | 2634 | { |
5b6d1e4f | 2635 | process_stratum_target *curr_target = current_inferior ()->process_target (); |
1192f124 | 2636 | gdb_assert (!curr_target->commit_resumed_state); |
5b6d1e4f | 2637 | |
d51926f0 PA |
2638 | gdb_assert (inferior_ptid != null_ptid); |
2639 | gdb_assert (inferior_ptid.matches (scope_ptid)); | |
2640 | ||
41336620 | 2641 | target_dcache_invalidate (current_program_space->aspace); |
28439f5e | 2642 | |
d51926f0 | 2643 | current_inferior ()->top_target ()->resume (scope_ptid, step, signal); |
28439f5e | 2644 | |
d51926f0 | 2645 | registers_changed_ptid (curr_target, scope_ptid); |
251bde03 | 2646 | /* We only set the internal executing state here. The user/frontend |
f2ffa92b PA |
2647 | running state is set at a higher level. This also clears the |
2648 | thread's stop_pc as side effect. */ | |
d51926f0 PA |
2649 | set_executing (curr_target, scope_ptid, true); |
2650 | clear_inline_frame_state (curr_target, scope_ptid); | |
38ba82db JB |
2651 | |
2652 | if (target_can_async_p ()) | |
4a570176 | 2653 | target_async (true); |
e1ac3328 | 2654 | } |
2455069d | 2655 | |
85ad3aaf PA |
2656 | /* See target.h. */ |
2657 | ||
2658 | void | |
1192f124 | 2659 | target_commit_resumed () |
85ad3aaf | 2660 | { |
1192f124 SM |
2661 | gdb_assert (current_inferior ()->process_target ()->commit_resumed_state); |
2662 | current_inferior ()->top_target ()->commit_resumed (); | |
85ad3aaf PA |
2663 | } |
2664 | ||
b4b1a226 SM |
2665 | /* See target.h. */ |
2666 | ||
2667 | bool | |
2668 | target_has_pending_events () | |
2669 | { | |
2670 | return current_inferior ()->top_target ()->has_pending_events (); | |
2671 | } | |
2672 | ||
2455069d | 2673 | void |
adc6a863 | 2674 | target_pass_signals (gdb::array_view<const unsigned char> pass_signals) |
2455069d | 2675 | { |
328d42d8 | 2676 | current_inferior ()->top_target ()->pass_signals (pass_signals); |
2455069d UW |
2677 | } |
2678 | ||
9b224c5e | 2679 | void |
adc6a863 | 2680 | target_program_signals (gdb::array_view<const unsigned char> program_signals) |
9b224c5e | 2681 | { |
328d42d8 | 2682 | current_inferior ()->top_target ()->program_signals (program_signals); |
9b224c5e PA |
2683 | } |
2684 | ||
e97007b6 | 2685 | static void |
82d1f134 SM |
2686 | default_follow_fork (struct target_ops *self, inferior *child_inf, |
2687 | ptid_t child_ptid, target_waitkind fork_kind, | |
2688 | bool follow_child, bool detach_fork) | |
098dba18 TT |
2689 | { |
2690 | /* Some target returned a fork event, but did not know how to follow it. */ | |
f34652de | 2691 | internal_error (_("could not find a target to follow fork")); |
098dba18 TT |
2692 | } |
2693 | ||
0d36baa9 PA |
2694 | static void |
2695 | default_follow_clone (struct target_ops *self, ptid_t child_ptid) | |
2696 | { | |
2697 | /* Some target returned a clone event, but did not know how to follow it. */ | |
2698 | internal_error (_("could not find a target to follow clone")); | |
2699 | } | |
2700 | ||
e97007b6 | 2701 | /* See target.h. */ |
ee057212 | 2702 | |
e97007b6 | 2703 | void |
82d1f134 SM |
2704 | target_follow_fork (inferior *child_inf, ptid_t child_ptid, |
2705 | target_waitkind fork_kind, bool follow_child, | |
2706 | bool detach_fork) | |
ee057212 | 2707 | { |
328d42d8 SM |
2708 | target_ops *target = current_inferior ()->top_target (); |
2709 | ||
82d1f134 SM |
2710 | /* Check consistency between CHILD_INF, CHILD_PTID, FOLLOW_CHILD and |
2711 | DETACH_FORK. */ | |
2712 | if (child_inf != nullptr) | |
2713 | { | |
2714 | gdb_assert (follow_child || !detach_fork); | |
2715 | gdb_assert (child_inf->pid == child_ptid.pid ()); | |
2716 | } | |
2717 | else | |
2718 | gdb_assert (!follow_child && detach_fork); | |
2719 | ||
2720 | return target->follow_fork (child_inf, child_ptid, fork_kind, follow_child, | |
2721 | detach_fork); | |
ee057212 DJ |
2722 | } |
2723 | ||
294c36eb | 2724 | /* See target.h. */ |
94585166 DB |
2725 | |
2726 | void | |
294c36eb SM |
2727 | target_follow_exec (inferior *follow_inf, ptid_t ptid, |
2728 | const char *execd_pathname) | |
94585166 | 2729 | { |
294c36eb SM |
2730 | current_inferior ()->top_target ()->follow_exec (follow_inf, ptid, |
2731 | execd_pathname); | |
94585166 DB |
2732 | } |
2733 | ||
8d657035 TT |
2734 | static void |
2735 | default_mourn_inferior (struct target_ops *self) | |
2736 | { | |
f34652de | 2737 | internal_error (_("could not find a target to follow mourn inferior")); |
8d657035 TT |
2738 | } |
2739 | ||
136d6dae | 2740 | void |
bc1e6c81 | 2741 | target_mourn_inferior (ptid_t ptid) |
136d6dae | 2742 | { |
dffdd8b5 | 2743 | gdb_assert (ptid.pid () == inferior_ptid.pid ()); |
328d42d8 | 2744 | current_inferior ()->top_target ()->mourn_inferior (); |
136d6dae VP |
2745 | } |
2746 | ||
424163ea DJ |
2747 | /* Look for a target which can describe architectural features, starting |
2748 | from TARGET. If we find one, return its description. */ | |
2749 | ||
2750 | const struct target_desc * | |
2751 | target_read_description (struct target_ops *target) | |
2752 | { | |
f6ac5f3d | 2753 | return target->read_description (); |
424163ea DJ |
2754 | } |
2755 | ||
08388c79 | 2756 | |
58a5184e TT |
2757 | /* Default implementation of memory-searching. */ |
2758 | ||
2759 | static int | |
2760 | default_search_memory (struct target_ops *self, | |
2761 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2762 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2763 | CORE_ADDR *found_addrp) | |
2764 | { | |
4a72de73 TT |
2765 | auto read_memory = [=] (CORE_ADDR addr, gdb_byte *result, size_t len) |
2766 | { | |
328d42d8 SM |
2767 | return target_read (current_inferior ()->top_target (), |
2768 | TARGET_OBJECT_MEMORY, NULL, | |
4a72de73 TT |
2769 | result, addr, len) == len; |
2770 | }; | |
2771 | ||
58a5184e | 2772 | /* Start over from the top of the target stack. */ |
4a72de73 | 2773 | return simple_search_memory (read_memory, start_addr, search_space_len, |
58a5184e TT |
2774 | pattern, pattern_len, found_addrp); |
2775 | } | |
2776 | ||
08388c79 DE |
2777 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the |
2778 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2779 | ||
2780 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2781 | requiring halting of the search (e.g. memory read error). | |
2782 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2783 | ||
2784 | int | |
2785 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2786 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2787 | CORE_ADDR *found_addrp) | |
2788 | { | |
328d42d8 SM |
2789 | target_ops *target = current_inferior ()->top_target (); |
2790 | ||
2791 | return target->search_memory (start_addr, search_space_len, pattern, | |
2792 | pattern_len, found_addrp); | |
08388c79 DE |
2793 | } |
2794 | ||
8edfe269 DJ |
2795 | /* Look through the currently pushed targets. If none of them will |
2796 | be able to restart the currently running process, issue an error | |
2797 | message. */ | |
2798 | ||
2799 | void | |
2800 | target_require_runnable (void) | |
2801 | { | |
328d42d8 SM |
2802 | for (target_ops *t = current_inferior ()->top_target (); |
2803 | t != NULL; | |
2804 | t = t->beneath ()) | |
8edfe269 DJ |
2805 | { |
2806 | /* If this target knows how to create a new program, then | |
2807 | assume we will still be able to after killing the current | |
2808 | one. Either killing and mourning will not pop T, or else | |
2809 | find_default_run_target will find it again. */ | |
f6ac5f3d | 2810 | if (t->can_create_inferior ()) |
8edfe269 DJ |
2811 | return; |
2812 | ||
548740d6 | 2813 | /* Do not worry about targets at certain strata that can not |
8edfe269 DJ |
2814 | create inferiors. Assume they will be pushed again if |
2815 | necessary, and continue to the process_stratum. */ | |
66b4deae | 2816 | if (t->stratum () > process_stratum) |
8edfe269 DJ |
2817 | continue; |
2818 | ||
3e43a32a MS |
2819 | error (_("The \"%s\" target does not support \"run\". " |
2820 | "Try \"help target\" or \"continue\"."), | |
f6ac5f3d | 2821 | t->shortname ()); |
8edfe269 DJ |
2822 | } |
2823 | ||
2824 | /* This function is only called if the target is running. In that | |
2825 | case there should have been a process_stratum target and it | |
c378eb4e | 2826 | should either know how to create inferiors, or not... */ |
f34652de | 2827 | internal_error (_("No targets found")); |
8edfe269 DJ |
2828 | } |
2829 | ||
6a3cb8e8 PA |
2830 | /* Whether GDB is allowed to fall back to the default run target for |
2831 | "run", "attach", etc. when no target is connected yet. */ | |
491144b5 | 2832 | static bool auto_connect_native_target = true; |
6a3cb8e8 PA |
2833 | |
2834 | static void | |
2835 | show_auto_connect_native_target (struct ui_file *file, int from_tty, | |
2836 | struct cmd_list_element *c, const char *value) | |
2837 | { | |
6cb06a8c TT |
2838 | gdb_printf (file, |
2839 | _("Whether GDB may automatically connect to the " | |
2840 | "native target is %s.\n"), | |
2841 | value); | |
6a3cb8e8 PA |
2842 | } |
2843 | ||
d9f719f1 PA |
2844 | /* A pointer to the target that can respond to "run" or "attach". |
2845 | Native targets are always singletons and instantiated early at GDB | |
2846 | startup. */ | |
2847 | static target_ops *the_native_target; | |
2848 | ||
2849 | /* See target.h. */ | |
2850 | ||
2851 | void | |
2852 | set_native_target (target_ops *target) | |
2853 | { | |
2854 | if (the_native_target != NULL) | |
f34652de | 2855 | internal_error (_("native target already set (\"%s\")."), |
d9f719f1 PA |
2856 | the_native_target->longname ()); |
2857 | ||
2858 | the_native_target = target; | |
2859 | } | |
2860 | ||
2861 | /* See target.h. */ | |
2862 | ||
2863 | target_ops * | |
2864 | get_native_target () | |
2865 | { | |
2866 | return the_native_target; | |
2867 | } | |
2868 | ||
c906108c SS |
2869 | /* Look through the list of possible targets for a target that can |
2870 | execute a run or attach command without any other data. This is | |
2871 | used to locate the default process stratum. | |
2872 | ||
5f667f2d PA |
2873 | If DO_MESG is not NULL, the result is always valid (error() is |
2874 | called for errors); else, return NULL on error. */ | |
c906108c SS |
2875 | |
2876 | static struct target_ops * | |
a121b7c1 | 2877 | find_default_run_target (const char *do_mesg) |
c906108c | 2878 | { |
d9f719f1 PA |
2879 | if (auto_connect_native_target && the_native_target != NULL) |
2880 | return the_native_target; | |
c906108c | 2881 | |
d9f719f1 PA |
2882 | if (do_mesg != NULL) |
2883 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
2884 | return NULL; | |
c906108c SS |
2885 | } |
2886 | ||
b3ccfe11 | 2887 | /* See target.h. */ |
c906108c | 2888 | |
b3ccfe11 TT |
2889 | struct target_ops * |
2890 | find_attach_target (void) | |
c906108c | 2891 | { |
b3ccfe11 | 2892 | /* If a target on the current stack can attach, use it. */ |
328d42d8 SM |
2893 | for (target_ops *t = current_inferior ()->top_target (); |
2894 | t != NULL; | |
2895 | t = t->beneath ()) | |
b3ccfe11 | 2896 | { |
f6ac5f3d | 2897 | if (t->can_attach ()) |
d9f719f1 | 2898 | return t; |
b3ccfe11 | 2899 | } |
c906108c | 2900 | |
b3ccfe11 | 2901 | /* Otherwise, use the default run target for attaching. */ |
d9f719f1 | 2902 | return find_default_run_target ("attach"); |
b84876c2 PA |
2903 | } |
2904 | ||
b3ccfe11 | 2905 | /* See target.h. */ |
b84876c2 | 2906 | |
b3ccfe11 TT |
2907 | struct target_ops * |
2908 | find_run_target (void) | |
9908b566 | 2909 | { |
f6ac5f3d | 2910 | /* If a target on the current stack can run, use it. */ |
328d42d8 SM |
2911 | for (target_ops *t = current_inferior ()->top_target (); |
2912 | t != NULL; | |
2913 | t = t->beneath ()) | |
b3ccfe11 | 2914 | { |
f6ac5f3d | 2915 | if (t->can_create_inferior ()) |
d9f719f1 | 2916 | return t; |
b3ccfe11 | 2917 | } |
5d502164 | 2918 | |
b3ccfe11 | 2919 | /* Otherwise, use the default run target. */ |
d9f719f1 | 2920 | return find_default_run_target ("run"); |
9908b566 VP |
2921 | } |
2922 | ||
f6ac5f3d PA |
2923 | bool |
2924 | target_ops::info_proc (const char *args, enum info_proc_what what) | |
2925 | { | |
2926 | return false; | |
2927 | } | |
2928 | ||
145b16a9 UW |
2929 | /* Implement the "info proc" command. */ |
2930 | ||
451b7c33 | 2931 | int |
7bc112c1 | 2932 | target_info_proc (const char *args, enum info_proc_what what) |
145b16a9 UW |
2933 | { |
2934 | struct target_ops *t; | |
2935 | ||
2936 | /* If we're already connected to something that can get us OS | |
2937 | related data, use it. Otherwise, try using the native | |
2938 | target. */ | |
f6ac5f3d PA |
2939 | t = find_target_at (process_stratum); |
2940 | if (t == NULL) | |
145b16a9 UW |
2941 | t = find_default_run_target (NULL); |
2942 | ||
b6a8c27b | 2943 | for (; t != NULL; t = t->beneath ()) |
145b16a9 | 2944 | { |
f6ac5f3d | 2945 | if (t->info_proc (args, what)) |
145b16a9 | 2946 | { |
145b16a9 | 2947 | if (targetdebug) |
6cb06a8c TT |
2948 | gdb_printf (gdb_stdlog, |
2949 | "target_info_proc (\"%s\", %d)\n", args, what); | |
145b16a9 | 2950 | |
451b7c33 | 2951 | return 1; |
145b16a9 UW |
2952 | } |
2953 | } | |
2954 | ||
451b7c33 | 2955 | return 0; |
145b16a9 UW |
2956 | } |
2957 | ||
03583c20 | 2958 | static int |
2bfc0540 | 2959 | find_default_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
2960 | { |
2961 | struct target_ops *t; | |
2962 | ||
2963 | t = find_default_run_target (NULL); | |
f6ac5f3d PA |
2964 | if (t != NULL) |
2965 | return t->supports_disable_randomization (); | |
03583c20 UW |
2966 | return 0; |
2967 | } | |
2968 | ||
2969 | int | |
2970 | target_supports_disable_randomization (void) | |
2971 | { | |
328d42d8 | 2972 | return current_inferior ()->top_target ()->supports_disable_randomization (); |
03583c20 | 2973 | } |
9908b566 | 2974 | |
1fb77080 SDJ |
2975 | /* See target/target.h. */ |
2976 | ||
2977 | int | |
2978 | target_supports_multi_process (void) | |
2979 | { | |
328d42d8 | 2980 | return current_inferior ()->top_target ()->supports_multi_process (); |
1fb77080 SDJ |
2981 | } |
2982 | ||
b7b030ad TT |
2983 | /* See target.h. */ |
2984 | ||
6b09f134 | 2985 | std::optional<gdb::char_vector> |
07e059b5 VP |
2986 | target_get_osdata (const char *type) |
2987 | { | |
07e059b5 VP |
2988 | struct target_ops *t; |
2989 | ||
739ef7fb PA |
2990 | /* If we're already connected to something that can get us OS |
2991 | related data, use it. Otherwise, try using the native | |
2992 | target. */ | |
f6ac5f3d PA |
2993 | t = find_target_at (process_stratum); |
2994 | if (t == NULL) | |
739ef7fb | 2995 | t = find_default_run_target ("get OS data"); |
07e059b5 VP |
2996 | |
2997 | if (!t) | |
9018be22 | 2998 | return {}; |
07e059b5 | 2999 | |
6d097e65 | 3000 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
3001 | } |
3002 | ||
b6a8c27b PA |
3003 | /* See target.h. */ |
3004 | ||
3005 | target_ops * | |
3006 | target_ops::beneath () const | |
3007 | { | |
5b6d1e4f | 3008 | return current_inferior ()->find_target_beneath (this); |
b6a8c27b PA |
3009 | } |
3010 | ||
f6ac5f3d PA |
3011 | void |
3012 | target_ops::close () | |
3013 | { | |
3014 | } | |
3015 | ||
3016 | bool | |
3017 | target_ops::can_attach () | |
3018 | { | |
3019 | return 0; | |
3020 | } | |
3021 | ||
3022 | void | |
3023 | target_ops::attach (const char *, int) | |
3024 | { | |
3025 | gdb_assert_not_reached ("target_ops::attach called"); | |
3026 | } | |
3027 | ||
3028 | bool | |
3029 | target_ops::can_create_inferior () | |
3030 | { | |
3031 | return 0; | |
3032 | } | |
3033 | ||
3034 | void | |
3035 | target_ops::create_inferior (const char *, const std::string &, | |
3036 | char **, int) | |
3037 | { | |
3038 | gdb_assert_not_reached ("target_ops::create_inferior called"); | |
3039 | } | |
3040 | ||
57810aa7 | 3041 | bool |
f6ac5f3d PA |
3042 | target_ops::can_run () |
3043 | { | |
57810aa7 | 3044 | return false; |
f6ac5f3d PA |
3045 | } |
3046 | ||
3047 | int | |
3048 | target_can_run () | |
3049 | { | |
328d42d8 SM |
3050 | for (target_ops *t = current_inferior ()->top_target (); |
3051 | t != NULL; | |
3052 | t = t->beneath ()) | |
f6ac5f3d PA |
3053 | { |
3054 | if (t->can_run ()) | |
3055 | return 1; | |
3056 | } | |
3057 | ||
3058 | return 0; | |
3059 | } | |
7313baad UW |
3060 | |
3061 | /* Target file operations. */ | |
3062 | ||
3063 | static struct target_ops * | |
3064 | default_fileio_target (void) | |
3065 | { | |
f6ac5f3d PA |
3066 | struct target_ops *t; |
3067 | ||
7313baad UW |
3068 | /* If we're already connected to something that can perform |
3069 | file I/O, use it. Otherwise, try using the native target. */ | |
f6ac5f3d PA |
3070 | t = find_target_at (process_stratum); |
3071 | if (t != NULL) | |
3072 | return t; | |
3073 | return find_default_run_target ("file I/O"); | |
7313baad UW |
3074 | } |
3075 | ||
1c4b552b GB |
3076 | /* File handle for target file operations. */ |
3077 | ||
5ff79300 | 3078 | struct fileio_fh_t |
1c4b552b | 3079 | { |
20db9c52 PA |
3080 | /* The target on which this file is open. NULL if the target is |
3081 | meanwhile closed while the handle is open. */ | |
5ff79300 | 3082 | target_ops *target; |
1c4b552b GB |
3083 | |
3084 | /* The file descriptor on the target. */ | |
5ff79300 | 3085 | int target_fd; |
1c4b552b | 3086 | |
5ff79300 PA |
3087 | /* Check whether this fileio_fh_t represents a closed file. */ |
3088 | bool is_closed () | |
3089 | { | |
3090 | return target_fd < 0; | |
3091 | } | |
3092 | }; | |
1c4b552b GB |
3093 | |
3094 | /* Vector of currently open file handles. The value returned by | |
3095 | target_fileio_open and passed as the FD argument to other | |
3096 | target_fileio_* functions is an index into this vector. This | |
3097 | vector's entries are never freed; instead, files are marked as | |
3098 | closed, and the handle becomes available for reuse. */ | |
5ff79300 | 3099 | static std::vector<fileio_fh_t> fileio_fhandles; |
1c4b552b GB |
3100 | |
3101 | /* Index into fileio_fhandles of the lowest handle that might be | |
3102 | closed. This permits handle reuse without searching the whole | |
3103 | list each time a new file is opened. */ | |
3104 | static int lowest_closed_fd; | |
3105 | ||
d7cb0ef3 | 3106 | /* See target.h. */ |
20db9c52 | 3107 | |
d7cb0ef3 | 3108 | void |
20db9c52 PA |
3109 | fileio_handles_invalidate_target (target_ops *targ) |
3110 | { | |
3111 | for (fileio_fh_t &fh : fileio_fhandles) | |
3112 | if (fh.target == targ) | |
3113 | fh.target = NULL; | |
3114 | } | |
3115 | ||
1c4b552b GB |
3116 | /* Acquire a target fileio file descriptor. */ |
3117 | ||
3118 | static int | |
5ff79300 | 3119 | acquire_fileio_fd (target_ops *target, int target_fd) |
1c4b552b | 3120 | { |
1c4b552b | 3121 | /* Search for closed handles to reuse. */ |
5ff79300 PA |
3122 | for (; lowest_closed_fd < fileio_fhandles.size (); lowest_closed_fd++) |
3123 | { | |
3124 | fileio_fh_t &fh = fileio_fhandles[lowest_closed_fd]; | |
3125 | ||
3126 | if (fh.is_closed ()) | |
3127 | break; | |
3128 | } | |
1c4b552b GB |
3129 | |
3130 | /* Push a new handle if no closed handles were found. */ | |
5ff79300 PA |
3131 | if (lowest_closed_fd == fileio_fhandles.size ()) |
3132 | fileio_fhandles.push_back (fileio_fh_t {target, target_fd}); | |
3133 | else | |
3134 | fileio_fhandles[lowest_closed_fd] = {target, target_fd}; | |
1c4b552b | 3135 | |
5ff79300 PA |
3136 | /* Should no longer be marked closed. */ |
3137 | gdb_assert (!fileio_fhandles[lowest_closed_fd].is_closed ()); | |
1c4b552b GB |
3138 | |
3139 | /* Return its index, and start the next lookup at | |
3140 | the next index. */ | |
3141 | return lowest_closed_fd++; | |
3142 | } | |
3143 | ||
3144 | /* Release a target fileio file descriptor. */ | |
3145 | ||
3146 | static void | |
3147 | release_fileio_fd (int fd, fileio_fh_t *fh) | |
3148 | { | |
5ff79300 | 3149 | fh->target_fd = -1; |
325fac50 | 3150 | lowest_closed_fd = std::min (lowest_closed_fd, fd); |
1c4b552b GB |
3151 | } |
3152 | ||
3153 | /* Return a pointer to the fileio_fhandle_t corresponding to FD. */ | |
3154 | ||
5ff79300 PA |
3155 | static fileio_fh_t * |
3156 | fileio_fd_to_fh (int fd) | |
3157 | { | |
3158 | return &fileio_fhandles[fd]; | |
3159 | } | |
1c4b552b | 3160 | |
f6ac5f3d PA |
3161 | |
3162 | /* Default implementations of file i/o methods. We don't want these | |
3163 | to delegate automatically, because we need to know which target | |
3164 | supported the method, in order to call it directly from within | |
3165 | pread/pwrite, etc. */ | |
3166 | ||
3167 | int | |
3168 | target_ops::fileio_open (struct inferior *inf, const char *filename, | |
3169 | int flags, int mode, int warn_if_slow, | |
b872057a | 3170 | fileio_error *target_errno) |
f6ac5f3d PA |
3171 | { |
3172 | *target_errno = FILEIO_ENOSYS; | |
3173 | return -1; | |
3174 | } | |
3175 | ||
3176 | int | |
3177 | target_ops::fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
b872057a | 3178 | ULONGEST offset, fileio_error *target_errno) |
f6ac5f3d PA |
3179 | { |
3180 | *target_errno = FILEIO_ENOSYS; | |
3181 | return -1; | |
3182 | } | |
3183 | ||
3184 | int | |
3185 | target_ops::fileio_pread (int fd, gdb_byte *read_buf, int len, | |
b872057a | 3186 | ULONGEST offset, fileio_error *target_errno) |
f6ac5f3d PA |
3187 | { |
3188 | *target_errno = FILEIO_ENOSYS; | |
3189 | return -1; | |
3190 | } | |
3191 | ||
3192 | int | |
b872057a | 3193 | target_ops::fileio_fstat (int fd, struct stat *sb, fileio_error *target_errno) |
f6ac5f3d PA |
3194 | { |
3195 | *target_errno = FILEIO_ENOSYS; | |
3196 | return -1; | |
3197 | } | |
3198 | ||
3199 | int | |
b872057a | 3200 | target_ops::fileio_close (int fd, fileio_error *target_errno) |
f6ac5f3d PA |
3201 | { |
3202 | *target_errno = FILEIO_ENOSYS; | |
3203 | return -1; | |
3204 | } | |
3205 | ||
3206 | int | |
3207 | target_ops::fileio_unlink (struct inferior *inf, const char *filename, | |
b872057a | 3208 | fileio_error *target_errno) |
f6ac5f3d PA |
3209 | { |
3210 | *target_errno = FILEIO_ENOSYS; | |
3211 | return -1; | |
3212 | } | |
3213 | ||
6b09f134 | 3214 | std::optional<std::string> |
f6ac5f3d | 3215 | target_ops::fileio_readlink (struct inferior *inf, const char *filename, |
b872057a | 3216 | fileio_error *target_errno) |
f6ac5f3d PA |
3217 | { |
3218 | *target_errno = FILEIO_ENOSYS; | |
3219 | return {}; | |
3220 | } | |
3221 | ||
4111f652 | 3222 | /* See target.h. */ |
12e2a5fd | 3223 | |
4111f652 PA |
3224 | int |
3225 | target_fileio_open (struct inferior *inf, const char *filename, | |
b872057a | 3226 | int flags, int mode, bool warn_if_slow, fileio_error *target_errno) |
7313baad | 3227 | { |
b6a8c27b | 3228 | for (target_ops *t = default_fileio_target (); t != NULL; t = t->beneath ()) |
7313baad | 3229 | { |
f6ac5f3d PA |
3230 | int fd = t->fileio_open (inf, filename, flags, mode, |
3231 | warn_if_slow, target_errno); | |
7313baad | 3232 | |
f6ac5f3d PA |
3233 | if (fd == -1 && *target_errno == FILEIO_ENOSYS) |
3234 | continue; | |
1c4b552b | 3235 | |
f6ac5f3d PA |
3236 | if (fd < 0) |
3237 | fd = -1; | |
3238 | else | |
3239 | fd = acquire_fileio_fd (t, fd); | |
3240 | ||
3241 | if (targetdebug) | |
6cb06a8c TT |
3242 | gdb_printf (gdb_stdlog, |
3243 | "target_fileio_open (%d,%s,0x%x,0%o,%d)" | |
3244 | " = %d (%d)\n", | |
3245 | inf == NULL ? 0 : inf->num, | |
3246 | filename, flags, mode, | |
3247 | warn_if_slow, fd, | |
3248 | fd != -1 ? 0 : *target_errno); | |
f6ac5f3d | 3249 | return fd; |
7313baad UW |
3250 | } |
3251 | ||
3252 | *target_errno = FILEIO_ENOSYS; | |
3253 | return -1; | |
3254 | } | |
3255 | ||
12e2a5fd GB |
3256 | /* See target.h. */ |
3257 | ||
7313baad UW |
3258 | int |
3259 | target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
b872057a | 3260 | ULONGEST offset, fileio_error *target_errno) |
7313baad | 3261 | { |
1c4b552b GB |
3262 | fileio_fh_t *fh = fileio_fd_to_fh (fd); |
3263 | int ret = -1; | |
7313baad | 3264 | |
5ff79300 | 3265 | if (fh->is_closed ()) |
b872057a | 3266 | *target_errno = FILEIO_EBADF; |
20db9c52 | 3267 | else if (fh->target == NULL) |
b872057a | 3268 | *target_errno = FILEIO_EIO; |
1c4b552b | 3269 | else |
f6ac5f3d PA |
3270 | ret = fh->target->fileio_pwrite (fh->target_fd, write_buf, |
3271 | len, offset, target_errno); | |
7313baad | 3272 | |
1c4b552b | 3273 | if (targetdebug) |
6cb06a8c TT |
3274 | gdb_printf (gdb_stdlog, |
3275 | "target_fileio_pwrite (%d,...,%d,%s) " | |
3276 | "= %d (%d)\n", | |
3277 | fd, len, pulongest (offset), | |
3278 | ret, ret != -1 ? 0 : *target_errno); | |
1c4b552b | 3279 | return ret; |
7313baad UW |
3280 | } |
3281 | ||
12e2a5fd GB |
3282 | /* See target.h. */ |
3283 | ||
7313baad UW |
3284 | int |
3285 | target_fileio_pread (int fd, gdb_byte *read_buf, int len, | |
b872057a | 3286 | ULONGEST offset, fileio_error *target_errno) |
7313baad | 3287 | { |
1c4b552b GB |
3288 | fileio_fh_t *fh = fileio_fd_to_fh (fd); |
3289 | int ret = -1; | |
7313baad | 3290 | |
5ff79300 | 3291 | if (fh->is_closed ()) |
b872057a | 3292 | *target_errno = FILEIO_EBADF; |
20db9c52 | 3293 | else if (fh->target == NULL) |
b872057a | 3294 | *target_errno = FILEIO_EIO; |
1c4b552b | 3295 | else |
f6ac5f3d PA |
3296 | ret = fh->target->fileio_pread (fh->target_fd, read_buf, |
3297 | len, offset, target_errno); | |
7313baad | 3298 | |
1c4b552b | 3299 | if (targetdebug) |
6cb06a8c TT |
3300 | gdb_printf (gdb_stdlog, |
3301 | "target_fileio_pread (%d,...,%d,%s) " | |
3302 | "= %d (%d)\n", | |
3303 | fd, len, pulongest (offset), | |
3304 | ret, ret != -1 ? 0 : *target_errno); | |
9b15c1f0 GB |
3305 | return ret; |
3306 | } | |
3307 | ||
3308 | /* See target.h. */ | |
12e2a5fd | 3309 | |
9b15c1f0 | 3310 | int |
b872057a | 3311 | target_fileio_fstat (int fd, struct stat *sb, fileio_error *target_errno) |
9b15c1f0 GB |
3312 | { |
3313 | fileio_fh_t *fh = fileio_fd_to_fh (fd); | |
3314 | int ret = -1; | |
3315 | ||
5ff79300 | 3316 | if (fh->is_closed ()) |
b872057a | 3317 | *target_errno = FILEIO_EBADF; |
20db9c52 | 3318 | else if (fh->target == NULL) |
b872057a | 3319 | *target_errno = FILEIO_EIO; |
9b15c1f0 | 3320 | else |
f6ac5f3d | 3321 | ret = fh->target->fileio_fstat (fh->target_fd, sb, target_errno); |
9b15c1f0 GB |
3322 | |
3323 | if (targetdebug) | |
6cb06a8c TT |
3324 | gdb_printf (gdb_stdlog, |
3325 | "target_fileio_fstat (%d) = %d (%d)\n", | |
3326 | fd, ret, ret != -1 ? 0 : *target_errno); | |
1c4b552b | 3327 | return ret; |
7313baad UW |
3328 | } |
3329 | ||
12e2a5fd GB |
3330 | /* See target.h. */ |
3331 | ||
7313baad | 3332 | int |
b872057a | 3333 | target_fileio_close (int fd, fileio_error *target_errno) |
7313baad | 3334 | { |
1c4b552b GB |
3335 | fileio_fh_t *fh = fileio_fd_to_fh (fd); |
3336 | int ret = -1; | |
7313baad | 3337 | |
5ff79300 | 3338 | if (fh->is_closed ()) |
b872057a | 3339 | *target_errno = FILEIO_EBADF; |
1c4b552b | 3340 | else |
7313baad | 3341 | { |
20db9c52 | 3342 | if (fh->target != NULL) |
f6ac5f3d PA |
3343 | ret = fh->target->fileio_close (fh->target_fd, |
3344 | target_errno); | |
20db9c52 PA |
3345 | else |
3346 | ret = 0; | |
1c4b552b | 3347 | release_fileio_fd (fd, fh); |
7313baad UW |
3348 | } |
3349 | ||
1c4b552b | 3350 | if (targetdebug) |
6cb06a8c TT |
3351 | gdb_printf (gdb_stdlog, |
3352 | "target_fileio_close (%d) = %d (%d)\n", | |
3353 | fd, ret, ret != -1 ? 0 : *target_errno); | |
1c4b552b | 3354 | return ret; |
7313baad UW |
3355 | } |
3356 | ||
12e2a5fd GB |
3357 | /* See target.h. */ |
3358 | ||
7313baad | 3359 | int |
07c138c8 | 3360 | target_fileio_unlink (struct inferior *inf, const char *filename, |
b872057a | 3361 | fileio_error *target_errno) |
7313baad | 3362 | { |
b6a8c27b | 3363 | for (target_ops *t = default_fileio_target (); t != NULL; t = t->beneath ()) |
7313baad | 3364 | { |
f6ac5f3d | 3365 | int ret = t->fileio_unlink (inf, filename, target_errno); |
7313baad | 3366 | |
f6ac5f3d PA |
3367 | if (ret == -1 && *target_errno == FILEIO_ENOSYS) |
3368 | continue; | |
3369 | ||
3370 | if (targetdebug) | |
6cb06a8c TT |
3371 | gdb_printf (gdb_stdlog, |
3372 | "target_fileio_unlink (%d,%s)" | |
3373 | " = %d (%d)\n", | |
3374 | inf == NULL ? 0 : inf->num, filename, | |
3375 | ret, ret != -1 ? 0 : *target_errno); | |
f6ac5f3d | 3376 | return ret; |
7313baad UW |
3377 | } |
3378 | ||
3379 | *target_errno = FILEIO_ENOSYS; | |
3380 | return -1; | |
3381 | } | |
3382 | ||
12e2a5fd GB |
3383 | /* See target.h. */ |
3384 | ||
6b09f134 | 3385 | std::optional<std::string> |
07c138c8 | 3386 | target_fileio_readlink (struct inferior *inf, const char *filename, |
b872057a | 3387 | fileio_error *target_errno) |
b9e7b9c3 | 3388 | { |
b6a8c27b | 3389 | for (target_ops *t = default_fileio_target (); t != NULL; t = t->beneath ()) |
b9e7b9c3 | 3390 | { |
6b09f134 | 3391 | std::optional<std::string> ret |
f6ac5f3d | 3392 | = t->fileio_readlink (inf, filename, target_errno); |
b9e7b9c3 | 3393 | |
f6ac5f3d PA |
3394 | if (!ret.has_value () && *target_errno == FILEIO_ENOSYS) |
3395 | continue; | |
3396 | ||
3397 | if (targetdebug) | |
6cb06a8c TT |
3398 | gdb_printf (gdb_stdlog, |
3399 | "target_fileio_readlink (%d,%s)" | |
3400 | " = %s (%d)\n", | |
3401 | inf == NULL ? 0 : inf->num, | |
3402 | filename, ret ? ret->c_str () : "(nil)", | |
3403 | ret ? 0 : *target_errno); | |
f6ac5f3d | 3404 | return ret; |
b9e7b9c3 UW |
3405 | } |
3406 | ||
3407 | *target_errno = FILEIO_ENOSYS; | |
e0d3522b | 3408 | return {}; |
b9e7b9c3 UW |
3409 | } |
3410 | ||
770623f7 TT |
3411 | /* Like scoped_fd, but specific to target fileio. */ |
3412 | ||
3413 | class scoped_target_fd | |
7313baad | 3414 | { |
770623f7 TT |
3415 | public: |
3416 | explicit scoped_target_fd (int fd) noexcept | |
3417 | : m_fd (fd) | |
3418 | { | |
3419 | } | |
7313baad | 3420 | |
770623f7 TT |
3421 | ~scoped_target_fd () |
3422 | { | |
3423 | if (m_fd >= 0) | |
3424 | { | |
b872057a | 3425 | fileio_error target_errno; |
770623f7 TT |
3426 | |
3427 | target_fileio_close (m_fd, &target_errno); | |
3428 | } | |
3429 | } | |
3430 | ||
3431 | DISABLE_COPY_AND_ASSIGN (scoped_target_fd); | |
3432 | ||
3433 | int get () const noexcept | |
3434 | { | |
3435 | return m_fd; | |
3436 | } | |
3437 | ||
3438 | private: | |
3439 | int m_fd; | |
3440 | }; | |
7313baad | 3441 | |
07c138c8 GB |
3442 | /* Read target file FILENAME, in the filesystem as seen by INF. If |
3443 | INF is NULL, use the filesystem seen by the debugger (GDB or, for | |
3444 | remote targets, the remote stub). Store the result in *BUF_P and | |
3445 | return the size of the transferred data. PADDING additional bytes | |
3446 | are available in *BUF_P. This is a helper function for | |
3447 | target_fileio_read_alloc; see the declaration of that function for | |
3448 | more information. */ | |
7313baad | 3449 | |
f7af1fcd JK |
3450 | static LONGEST |
3451 | target_fileio_read_alloc_1 (struct inferior *inf, const char *filename, | |
3452 | gdb_byte **buf_p, int padding) | |
3453 | { | |
db1ff28b JK |
3454 | size_t buf_alloc, buf_pos; |
3455 | gdb_byte *buf; | |
3456 | LONGEST n; | |
b872057a | 3457 | fileio_error target_errno; |
f7af1fcd | 3458 | |
770623f7 | 3459 | scoped_target_fd fd (target_fileio_open (inf, filename, FILEIO_O_RDONLY, |
4111f652 | 3460 | 0700, false, &target_errno)); |
770623f7 | 3461 | if (fd.get () == -1) |
f7af1fcd JK |
3462 | return -1; |
3463 | ||
db1ff28b JK |
3464 | /* Start by reading up to 4K at a time. The target will throttle |
3465 | this number down if necessary. */ | |
3466 | buf_alloc = 4096; | |
224c3ddb | 3467 | buf = (gdb_byte *) xmalloc (buf_alloc); |
db1ff28b JK |
3468 | buf_pos = 0; |
3469 | while (1) | |
3470 | { | |
770623f7 | 3471 | n = target_fileio_pread (fd.get (), &buf[buf_pos], |
db1ff28b JK |
3472 | buf_alloc - buf_pos - padding, buf_pos, |
3473 | &target_errno); | |
3474 | if (n < 0) | |
3475 | { | |
3476 | /* An error occurred. */ | |
db1ff28b JK |
3477 | xfree (buf); |
3478 | return -1; | |
3479 | } | |
3480 | else if (n == 0) | |
3481 | { | |
3482 | /* Read all there was. */ | |
db1ff28b JK |
3483 | if (buf_pos == 0) |
3484 | xfree (buf); | |
3485 | else | |
3486 | *buf_p = buf; | |
3487 | return buf_pos; | |
3488 | } | |
3489 | ||
3490 | buf_pos += n; | |
3491 | ||
3492 | /* If the buffer is filling up, expand it. */ | |
3493 | if (buf_alloc < buf_pos * 2) | |
3494 | { | |
3495 | buf_alloc *= 2; | |
224c3ddb | 3496 | buf = (gdb_byte *) xrealloc (buf, buf_alloc); |
db1ff28b JK |
3497 | } |
3498 | ||
3499 | QUIT; | |
3500 | } | |
f7af1fcd JK |
3501 | } |
3502 | ||
12e2a5fd | 3503 | /* See target.h. */ |
7313baad UW |
3504 | |
3505 | LONGEST | |
07c138c8 GB |
3506 | target_fileio_read_alloc (struct inferior *inf, const char *filename, |
3507 | gdb_byte **buf_p) | |
7313baad | 3508 | { |
07c138c8 | 3509 | return target_fileio_read_alloc_1 (inf, filename, buf_p, 0); |
7313baad UW |
3510 | } |
3511 | ||
db1ff28b | 3512 | /* See target.h. */ |
f7af1fcd | 3513 | |
87028b87 | 3514 | gdb::unique_xmalloc_ptr<char> |
f7af1fcd JK |
3515 | target_fileio_read_stralloc (struct inferior *inf, const char *filename) |
3516 | { | |
db1ff28b JK |
3517 | gdb_byte *buffer; |
3518 | char *bufstr; | |
3519 | LONGEST i, transferred; | |
3520 | ||
3521 | transferred = target_fileio_read_alloc_1 (inf, filename, &buffer, 1); | |
3522 | bufstr = (char *) buffer; | |
3523 | ||
3524 | if (transferred < 0) | |
87028b87 | 3525 | return gdb::unique_xmalloc_ptr<char> (nullptr); |
db1ff28b JK |
3526 | |
3527 | if (transferred == 0) | |
b02f78f9 | 3528 | return make_unique_xstrdup (""); |
db1ff28b JK |
3529 | |
3530 | bufstr[transferred] = 0; | |
3531 | ||
3532 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
3533 | for (i = strlen (bufstr); i < transferred; i++) | |
3534 | if (bufstr[i] != 0) | |
3535 | { | |
3536 | warning (_("target file %s " | |
3537 | "contained unexpected null characters"), | |
3538 | filename); | |
3539 | break; | |
3540 | } | |
3541 | ||
87028b87 | 3542 | return gdb::unique_xmalloc_ptr<char> (bufstr); |
f7af1fcd | 3543 | } |
7313baad | 3544 | |
db1ff28b | 3545 | |
e0d24f8d | 3546 | static int |
31568a15 TT |
3547 | default_region_ok_for_hw_watchpoint (struct target_ops *self, |
3548 | CORE_ADDR addr, int len) | |
e0d24f8d | 3549 | { |
99d9c3b9 SM |
3550 | gdbarch *arch = current_inferior ()->arch (); |
3551 | return (len <= gdbarch_ptr_bit (arch) / TARGET_CHAR_BIT); | |
ccaa32c7 GS |
3552 | } |
3553 | ||
5009afc5 AS |
3554 | static int |
3555 | default_watchpoint_addr_within_range (struct target_ops *target, | |
3556 | CORE_ADDR addr, | |
3557 | CORE_ADDR start, int length) | |
3558 | { | |
3559 | return addr >= start && addr < start + length; | |
3560 | } | |
3561 | ||
8b06beed TT |
3562 | /* See target.h. */ |
3563 | ||
a1740ee1 PA |
3564 | target_ops * |
3565 | target_stack::find_beneath (const target_ops *t) const | |
8b06beed | 3566 | { |
a1740ee1 | 3567 | /* Look for a non-empty slot at stratum levels beneath T's. */ |
66b4deae | 3568 | for (int stratum = t->stratum () - 1; stratum >= 0; --stratum) |
91e3d1d1 AB |
3569 | if (m_stack[stratum].get () != NULL) |
3570 | return m_stack[stratum].get (); | |
8b06beed TT |
3571 | |
3572 | return NULL; | |
3573 | } | |
3574 | ||
a1740ee1 PA |
3575 | /* See target.h. */ |
3576 | ||
3577 | struct target_ops * | |
3578 | find_target_at (enum strata stratum) | |
3579 | { | |
5b6d1e4f | 3580 | return current_inferior ()->target_at (stratum); |
a1740ee1 PA |
3581 | } |
3582 | ||
c906108c | 3583 | \f |
0f48b757 PA |
3584 | |
3585 | /* See target.h */ | |
3586 | ||
3587 | void | |
3588 | target_announce_detach (int from_tty) | |
3589 | { | |
3590 | pid_t pid; | |
a121b7c1 | 3591 | const char *exec_file; |
0f48b757 PA |
3592 | |
3593 | if (!from_tty) | |
3594 | return; | |
3595 | ||
e99b03dc | 3596 | pid = inferior_ptid.pid (); |
41e321a8 TT |
3597 | exec_file = get_exec_file (0); |
3598 | if (exec_file == nullptr) | |
6cb06a8c TT |
3599 | gdb_printf ("Detaching from pid %s\n", |
3600 | target_pid_to_str (ptid_t (pid)).c_str ()); | |
41e321a8 | 3601 | else |
6cb06a8c TT |
3602 | gdb_printf (_("Detaching from program: %s, %s\n"), exec_file, |
3603 | target_pid_to_str (ptid_t (pid)).c_str ()); | |
bc521517 TT |
3604 | } |
3605 | ||
3606 | /* See target.h */ | |
3607 | ||
3608 | void | |
3609 | target_announce_attach (int from_tty, int pid) | |
3610 | { | |
3611 | if (!from_tty) | |
3612 | return; | |
3613 | ||
3614 | const char *exec_file = get_exec_file (0); | |
3615 | ||
249f1cf8 | 3616 | if (exec_file != nullptr) |
6cb06a8c TT |
3617 | gdb_printf ("Attaching to program: %s, %s\n", exec_file, |
3618 | target_pid_to_str (ptid_t (pid)).c_str ()); | |
bc521517 | 3619 | else |
6cb06a8c TT |
3620 | gdb_printf ("Attaching to %s\n", |
3621 | target_pid_to_str (ptid_t (pid)).c_str ()); | |
0f48b757 PA |
3622 | } |
3623 | ||
c906108c SS |
3624 | /* The inferior process has died. Long live the inferior! */ |
3625 | ||
3626 | void | |
fba45db2 | 3627 | generic_mourn_inferior (void) |
c906108c | 3628 | { |
00431a78 | 3629 | inferior *inf = current_inferior (); |
c906108c | 3630 | |
a0776b13 | 3631 | switch_to_no_thread (); |
7f9f62ba | 3632 | |
f59f708a PA |
3633 | /* Mark breakpoints uninserted in case something tries to delete a |
3634 | breakpoint while we delete the inferior's threads (which would | |
3635 | fail, since the inferior is long gone). */ | |
c72348e3 | 3636 | mark_breakpoints_out (inf->pspace); |
f59f708a | 3637 | |
00431a78 PA |
3638 | if (inf->pid != 0) |
3639 | exit_inferior (inf); | |
7f9f62ba | 3640 | |
f59f708a PA |
3641 | /* Note this wipes step-resume breakpoints, so needs to be done |
3642 | after exit_inferior, which ends up referencing the step-resume | |
3643 | breakpoints through clear_thread_inferior_resources. */ | |
f5928702 | 3644 | breakpoint_init_inferior (inf, inf_exited); |
f59f708a | 3645 | |
c906108c SS |
3646 | registers_changed (); |
3647 | ||
c906108c SS |
3648 | reopen_exec_file (); |
3649 | reinit_frame_cache (); | |
3650 | ||
9a4105ab AC |
3651 | if (deprecated_detach_hook) |
3652 | deprecated_detach_hook (); | |
c906108c SS |
3653 | } |
3654 | \f | |
fd0a2a6f MK |
3655 | /* Convert a normal process ID to a string. Returns the string in a |
3656 | static buffer. */ | |
c906108c | 3657 | |
a068643d | 3658 | std::string |
39f77062 | 3659 | normal_pid_to_str (ptid_t ptid) |
c906108c | 3660 | { |
a068643d | 3661 | return string_printf ("process %d", ptid.pid ()); |
c906108c SS |
3662 | } |
3663 | ||
a068643d | 3664 | static std::string |
770234d3 | 3665 | default_pid_to_str (struct target_ops *ops, ptid_t ptid) |
117de6a9 PA |
3666 | { |
3667 | return normal_pid_to_str (ptid); | |
3668 | } | |
3669 | ||
9b4eba8e HZ |
3670 | /* Error-catcher for target_find_memory_regions. */ |
3671 | static int | |
2e73927c TT |
3672 | dummy_find_memory_regions (struct target_ops *self, |
3673 | find_memory_region_ftype ignore1, void *ignore2) | |
be4d1333 | 3674 | { |
9b4eba8e | 3675 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3676 | return 0; |
3677 | } | |
3678 | ||
9b4eba8e | 3679 | /* Error-catcher for target_make_corefile_notes. */ |
24f5300a | 3680 | static gdb::unique_xmalloc_ptr<char> |
fc6691b2 TT |
3681 | dummy_make_corefile_notes (struct target_ops *self, |
3682 | bfd *ignore1, int *ignore2) | |
be4d1333 | 3683 | { |
9b4eba8e | 3684 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3685 | return NULL; |
3686 | } | |
3687 | ||
f6ac5f3d PA |
3688 | #include "target-delegates.c" |
3689 | ||
06b5b831 TT |
3690 | /* The initial current target, so that there is always a semi-valid |
3691 | current target. */ | |
3692 | ||
3693 | static dummy_target the_dummy_target; | |
c906108c | 3694 | |
5b6d1e4f PA |
3695 | /* See target.h. */ |
3696 | ||
3697 | target_ops * | |
3698 | get_dummy_target () | |
3699 | { | |
3700 | return &the_dummy_target; | |
3701 | } | |
3702 | ||
d9f719f1 PA |
3703 | static const target_info dummy_target_info = { |
3704 | "None", | |
3705 | N_("None"), | |
3706 | "" | |
3707 | }; | |
3708 | ||
66b4deae PA |
3709 | strata |
3710 | dummy_target::stratum () const | |
f6ac5f3d | 3711 | { |
66b4deae | 3712 | return dummy_stratum; |
f6ac5f3d PA |
3713 | } |
3714 | ||
66b4deae PA |
3715 | strata |
3716 | debug_target::stratum () const | |
f6ac5f3d | 3717 | { |
66b4deae | 3718 | return debug_stratum; |
f6ac5f3d PA |
3719 | } |
3720 | ||
d9f719f1 PA |
3721 | const target_info & |
3722 | dummy_target::info () const | |
f6ac5f3d | 3723 | { |
d9f719f1 | 3724 | return dummy_target_info; |
f6ac5f3d PA |
3725 | } |
3726 | ||
d9f719f1 PA |
3727 | const target_info & |
3728 | debug_target::info () const | |
f6ac5f3d | 3729 | { |
b6a8c27b | 3730 | return beneath ()->info (); |
f6ac5f3d PA |
3731 | } |
3732 | ||
c906108c | 3733 | \f |
c906108c | 3734 | |
28439f5e PA |
3735 | int |
3736 | target_thread_alive (ptid_t ptid) | |
c906108c | 3737 | { |
328d42d8 | 3738 | return current_inferior ()->top_target ()->thread_alive (ptid); |
28439f5e PA |
3739 | } |
3740 | ||
3741 | void | |
e8032dde | 3742 | target_update_thread_list (void) |
28439f5e | 3743 | { |
328d42d8 | 3744 | current_inferior ()->top_target ()->update_thread_list (); |
c906108c SS |
3745 | } |
3746 | ||
d914c394 SS |
3747 | void |
3748 | target_stop (ptid_t ptid) | |
3749 | { | |
1192f124 SM |
3750 | process_stratum_target *proc_target = current_inferior ()->process_target (); |
3751 | ||
3752 | gdb_assert (!proc_target->commit_resumed_state); | |
3753 | ||
d914c394 SS |
3754 | if (!may_stop) |
3755 | { | |
3756 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3757 | return; | |
3758 | } | |
3759 | ||
328d42d8 | 3760 | current_inferior ()->top_target ()->stop (ptid); |
d914c394 SS |
3761 | } |
3762 | ||
bfedc46a | 3763 | void |
e671cd59 | 3764 | target_interrupt () |
bfedc46a PA |
3765 | { |
3766 | if (!may_stop) | |
3767 | { | |
3768 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3769 | return; | |
3770 | } | |
3771 | ||
328d42d8 | 3772 | current_inferior ()->top_target ()->interrupt (); |
bfedc46a PA |
3773 | } |
3774 | ||
abc56d60 PA |
3775 | /* See target.h. */ |
3776 | ||
93692b58 PA |
3777 | void |
3778 | target_pass_ctrlc (void) | |
3779 | { | |
5b6d1e4f PA |
3780 | /* Pass the Ctrl-C to the first target that has a thread |
3781 | running. */ | |
3782 | for (inferior *inf : all_inferiors ()) | |
3783 | { | |
3784 | target_ops *proc_target = inf->process_target (); | |
3785 | if (proc_target == NULL) | |
3786 | continue; | |
3787 | ||
43667cc6 | 3788 | for (thread_info *thr : inf->non_exited_threads ()) |
5b6d1e4f PA |
3789 | { |
3790 | /* A thread can be THREAD_STOPPED and executing, while | |
3791 | running an infcall. */ | |
611841bb | 3792 | if (thr->state == THREAD_RUNNING || thr->executing ()) |
5b6d1e4f PA |
3793 | { |
3794 | /* We can get here quite deep in target layers. Avoid | |
3795 | switching thread context or anything that would | |
3796 | communicate with the target (e.g., to fetch | |
3797 | registers), or flushing e.g., the frame cache. We | |
3798 | just switch inferior in order to be able to call | |
3799 | through the target_stack. */ | |
3800 | scoped_restore_current_inferior restore_inferior; | |
3801 | set_current_inferior (inf); | |
328d42d8 | 3802 | current_inferior ()->top_target ()->pass_ctrlc (); |
5b6d1e4f PA |
3803 | return; |
3804 | } | |
3805 | } | |
3806 | } | |
93692b58 PA |
3807 | } |
3808 | ||
3809 | /* See target.h. */ | |
3810 | ||
3811 | void | |
3812 | default_target_pass_ctrlc (struct target_ops *ops) | |
3813 | { | |
e671cd59 | 3814 | target_interrupt (); |
93692b58 PA |
3815 | } |
3816 | ||
f8c1d06b GB |
3817 | /* See target/target.h. */ |
3818 | ||
3819 | void | |
03f4463b | 3820 | target_stop_and_wait (ptid_t ptid) |
f8c1d06b GB |
3821 | { |
3822 | struct target_waitstatus status; | |
491144b5 | 3823 | bool was_non_stop = non_stop; |
f8c1d06b | 3824 | |
491144b5 | 3825 | non_stop = true; |
f8c1d06b GB |
3826 | target_stop (ptid); |
3827 | ||
f8c1d06b GB |
3828 | target_wait (ptid, &status, 0); |
3829 | ||
3830 | non_stop = was_non_stop; | |
3831 | } | |
3832 | ||
3833 | /* See target/target.h. */ | |
3834 | ||
3835 | void | |
03f4463b | 3836 | target_continue_no_signal (ptid_t ptid) |
f8c1d06b GB |
3837 | { |
3838 | target_resume (ptid, 0, GDB_SIGNAL_0); | |
3839 | } | |
3840 | ||
049a8570 SDJ |
3841 | /* See target/target.h. */ |
3842 | ||
3843 | void | |
3844 | target_continue (ptid_t ptid, enum gdb_signal signal) | |
3845 | { | |
3846 | target_resume (ptid, 0, signal); | |
3847 | } | |
3848 | ||
fdbac7d8 | 3849 | /* Concatenate ELEM to LIST, a comma-separated list. */ |
09826ec5 | 3850 | |
09ce46f2 SM |
3851 | static void |
3852 | str_comma_list_concat_elem (std::string *list, const char *elem) | |
09826ec5 | 3853 | { |
09ce46f2 SM |
3854 | if (!list->empty ()) |
3855 | list->append (", "); | |
3856 | ||
3857 | list->append (elem); | |
09826ec5 PA |
3858 | } |
3859 | ||
3860 | /* Helper for target_options_to_string. If OPT is present in | |
3861 | TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET. | |
09ce46f2 | 3862 | OPT is removed from TARGET_OPTIONS. */ |
09826ec5 | 3863 | |
09ce46f2 | 3864 | static void |
b60cea74 TT |
3865 | do_option (target_wait_flags *target_options, std::string *ret, |
3866 | target_wait_flag opt, const char *opt_str) | |
09826ec5 PA |
3867 | { |
3868 | if ((*target_options & opt) != 0) | |
3869 | { | |
09ce46f2 | 3870 | str_comma_list_concat_elem (ret, opt_str); |
09826ec5 PA |
3871 | *target_options &= ~opt; |
3872 | } | |
09826ec5 PA |
3873 | } |
3874 | ||
fdbac7d8 SM |
3875 | /* See target.h. */ |
3876 | ||
09ce46f2 | 3877 | std::string |
b60cea74 | 3878 | target_options_to_string (target_wait_flags target_options) |
09826ec5 | 3879 | { |
09ce46f2 | 3880 | std::string ret; |
09826ec5 PA |
3881 | |
3882 | #define DO_TARG_OPTION(OPT) \ | |
09ce46f2 | 3883 | do_option (&target_options, &ret, OPT, #OPT) |
09826ec5 PA |
3884 | |
3885 | DO_TARG_OPTION (TARGET_WNOHANG); | |
3886 | ||
3887 | if (target_options != 0) | |
09ce46f2 | 3888 | str_comma_list_concat_elem (&ret, "unknown???"); |
09826ec5 | 3889 | |
09826ec5 PA |
3890 | return ret; |
3891 | } | |
3892 | ||
28439f5e PA |
3893 | void |
3894 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 3895 | { |
328d42d8 | 3896 | current_inferior ()->top_target ()->fetch_registers (regcache, regno); |
ad5989bd | 3897 | if (targetdebug) |
8a8b6c53 SM |
3898 | gdb_printf (gdb_stdlog, "target_fetch_registers: %s", |
3899 | regcache->register_debug_string (regno).c_str ()); | |
c906108c SS |
3900 | } |
3901 | ||
28439f5e PA |
3902 | void |
3903 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 3904 | { |
d914c394 SS |
3905 | if (!may_write_registers) |
3906 | error (_("Writing to registers is not allowed (regno %d)"), regno); | |
3907 | ||
328d42d8 | 3908 | current_inferior ()->top_target ()->store_registers (regcache, regno); |
6b84065d | 3909 | if (targetdebug) |
8a8b6c53 SM |
3910 | gdb_printf (gdb_stdlog, "target_store_registers: %s", |
3911 | regcache->register_debug_string (regno).c_str ()); | |
c906108c SS |
3912 | } |
3913 | ||
dc146f7c VP |
3914 | int |
3915 | target_core_of_thread (ptid_t ptid) | |
3916 | { | |
328d42d8 | 3917 | return current_inferior ()->top_target ()->core_of_thread (ptid); |
dc146f7c VP |
3918 | } |
3919 | ||
936d2992 PA |
3920 | int |
3921 | simple_verify_memory (struct target_ops *ops, | |
3922 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
3923 | { | |
3924 | LONGEST total_xfered = 0; | |
3925 | ||
3926 | while (total_xfered < size) | |
3927 | { | |
3928 | ULONGEST xfered_len; | |
3929 | enum target_xfer_status status; | |
3930 | gdb_byte buf[1024]; | |
768adc05 | 3931 | ULONGEST howmuch = std::min<ULONGEST> (sizeof (buf), size - total_xfered); |
936d2992 PA |
3932 | |
3933 | status = target_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
3934 | buf, NULL, lma + total_xfered, howmuch, | |
3935 | &xfered_len); | |
3936 | if (status == TARGET_XFER_OK | |
3937 | && memcmp (data + total_xfered, buf, xfered_len) == 0) | |
3938 | { | |
3939 | total_xfered += xfered_len; | |
3940 | QUIT; | |
3941 | } | |
3942 | else | |
3943 | return 0; | |
3944 | } | |
3945 | return 1; | |
3946 | } | |
3947 | ||
3948 | /* Default implementation of memory verification. */ | |
3949 | ||
3950 | static int | |
3951 | default_verify_memory (struct target_ops *self, | |
3952 | const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3953 | { | |
3954 | /* Start over from the top of the target stack. */ | |
328d42d8 | 3955 | return simple_verify_memory (current_inferior ()->top_target (), |
936d2992 PA |
3956 | data, memaddr, size); |
3957 | } | |
3958 | ||
4a5e7a5b PA |
3959 | int |
3960 | target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3961 | { | |
328d42d8 SM |
3962 | target_ops *target = current_inferior ()->top_target (); |
3963 | ||
3964 | return target->verify_memory (data, memaddr, size); | |
4a5e7a5b PA |
3965 | } |
3966 | ||
9c06b0b4 TJB |
3967 | /* The documentation for this function is in its prototype declaration in |
3968 | target.h. */ | |
3969 | ||
3970 | int | |
f4b0a671 SM |
3971 | target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, |
3972 | enum target_hw_bp_type rw) | |
9c06b0b4 | 3973 | { |
328d42d8 SM |
3974 | target_ops *target = current_inferior ()->top_target (); |
3975 | ||
3976 | return target->insert_mask_watchpoint (addr, mask, rw); | |
9c06b0b4 TJB |
3977 | } |
3978 | ||
3979 | /* The documentation for this function is in its prototype declaration in | |
3980 | target.h. */ | |
3981 | ||
3982 | int | |
f4b0a671 SM |
3983 | target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, |
3984 | enum target_hw_bp_type rw) | |
9c06b0b4 | 3985 | { |
328d42d8 SM |
3986 | target_ops *target = current_inferior ()->top_target (); |
3987 | ||
3988 | return target->remove_mask_watchpoint (addr, mask, rw); | |
9c06b0b4 TJB |
3989 | } |
3990 | ||
3991 | /* The documentation for this function is in its prototype declaration | |
3992 | in target.h. */ | |
3993 | ||
3994 | int | |
3995 | target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask) | |
3996 | { | |
328d42d8 SM |
3997 | target_ops *target = current_inferior ()->top_target (); |
3998 | ||
3999 | return target->masked_watch_num_registers (addr, mask); | |
9c06b0b4 TJB |
4000 | } |
4001 | ||
f1310107 TJB |
4002 | /* The documentation for this function is in its prototype declaration |
4003 | in target.h. */ | |
4004 | ||
4005 | int | |
4006 | target_ranged_break_num_registers (void) | |
4007 | { | |
328d42d8 | 4008 | return current_inferior ()->top_target ()->ranged_break_num_registers (); |
f1310107 TJB |
4009 | } |
4010 | ||
02d27625 MM |
4011 | /* See target.h. */ |
4012 | ||
02d27625 | 4013 | struct btrace_target_info * |
696c0d5e | 4014 | target_enable_btrace (thread_info *tp, const struct btrace_config *conf) |
02d27625 | 4015 | { |
696c0d5e | 4016 | return current_inferior ()->top_target ()->enable_btrace (tp, conf); |
02d27625 MM |
4017 | } |
4018 | ||
4019 | /* See target.h. */ | |
4020 | ||
4021 | void | |
4022 | target_disable_btrace (struct btrace_target_info *btinfo) | |
4023 | { | |
328d42d8 | 4024 | current_inferior ()->top_target ()->disable_btrace (btinfo); |
02d27625 MM |
4025 | } |
4026 | ||
4027 | /* See target.h. */ | |
4028 | ||
4029 | void | |
4030 | target_teardown_btrace (struct btrace_target_info *btinfo) | |
4031 | { | |
328d42d8 | 4032 | current_inferior ()->top_target ()->teardown_btrace (btinfo); |
02d27625 MM |
4033 | } |
4034 | ||
4035 | /* See target.h. */ | |
4036 | ||
969c39fb | 4037 | enum btrace_error |
734b0e4b | 4038 | target_read_btrace (struct btrace_data *btrace, |
969c39fb | 4039 | struct btrace_target_info *btinfo, |
02d27625 MM |
4040 | enum btrace_read_type type) |
4041 | { | |
328d42d8 SM |
4042 | target_ops *target = current_inferior ()->top_target (); |
4043 | ||
4044 | return target->read_btrace (btrace, btinfo, type); | |
02d27625 MM |
4045 | } |
4046 | ||
d02ed0bb MM |
4047 | /* See target.h. */ |
4048 | ||
f4abbc16 MM |
4049 | const struct btrace_config * |
4050 | target_btrace_conf (const struct btrace_target_info *btinfo) | |
4051 | { | |
328d42d8 | 4052 | return current_inferior ()->top_target ()->btrace_conf (btinfo); |
f4abbc16 MM |
4053 | } |
4054 | ||
4055 | /* See target.h. */ | |
4056 | ||
7c1687a9 MM |
4057 | void |
4058 | target_stop_recording (void) | |
4059 | { | |
328d42d8 | 4060 | current_inferior ()->top_target ()->stop_recording (); |
7c1687a9 MM |
4061 | } |
4062 | ||
4063 | /* See target.h. */ | |
4064 | ||
d02ed0bb | 4065 | void |
85e1311a | 4066 | target_save_record (const char *filename) |
d02ed0bb | 4067 | { |
328d42d8 | 4068 | current_inferior ()->top_target ()->save_record (filename); |
d02ed0bb MM |
4069 | } |
4070 | ||
4071 | /* See target.h. */ | |
4072 | ||
4073 | int | |
f6ac5f3d | 4074 | target_supports_delete_record () |
d02ed0bb | 4075 | { |
328d42d8 | 4076 | return current_inferior ()->top_target ()->supports_delete_record (); |
d02ed0bb MM |
4077 | } |
4078 | ||
4079 | /* See target.h. */ | |
4080 | ||
4081 | void | |
4082 | target_delete_record (void) | |
4083 | { | |
328d42d8 | 4084 | current_inferior ()->top_target ()->delete_record (); |
d02ed0bb MM |
4085 | } |
4086 | ||
4087 | /* See target.h. */ | |
4088 | ||
b158a20f TW |
4089 | enum record_method |
4090 | target_record_method (ptid_t ptid) | |
4091 | { | |
328d42d8 | 4092 | return current_inferior ()->top_target ()->record_method (ptid); |
b158a20f TW |
4093 | } |
4094 | ||
4095 | /* See target.h. */ | |
4096 | ||
d02ed0bb | 4097 | int |
a52eab48 | 4098 | target_record_is_replaying (ptid_t ptid) |
d02ed0bb | 4099 | { |
328d42d8 | 4100 | return current_inferior ()->top_target ()->record_is_replaying (ptid); |
d02ed0bb MM |
4101 | } |
4102 | ||
4103 | /* See target.h. */ | |
4104 | ||
7ff27e9b MM |
4105 | int |
4106 | target_record_will_replay (ptid_t ptid, int dir) | |
4107 | { | |
328d42d8 | 4108 | return current_inferior ()->top_target ()->record_will_replay (ptid, dir); |
7ff27e9b MM |
4109 | } |
4110 | ||
4111 | /* See target.h. */ | |
4112 | ||
797094dd MM |
4113 | void |
4114 | target_record_stop_replaying (void) | |
4115 | { | |
328d42d8 | 4116 | current_inferior ()->top_target ()->record_stop_replaying (); |
797094dd MM |
4117 | } |
4118 | ||
4119 | /* See target.h. */ | |
4120 | ||
d02ed0bb MM |
4121 | void |
4122 | target_goto_record_begin (void) | |
4123 | { | |
328d42d8 | 4124 | current_inferior ()->top_target ()->goto_record_begin (); |
d02ed0bb MM |
4125 | } |
4126 | ||
4127 | /* See target.h. */ | |
4128 | ||
4129 | void | |
4130 | target_goto_record_end (void) | |
4131 | { | |
328d42d8 | 4132 | current_inferior ()->top_target ()->goto_record_end (); |
d02ed0bb MM |
4133 | } |
4134 | ||
4135 | /* See target.h. */ | |
4136 | ||
4137 | void | |
4138 | target_goto_record (ULONGEST insn) | |
4139 | { | |
328d42d8 | 4140 | current_inferior ()->top_target ()->goto_record (insn); |
d02ed0bb MM |
4141 | } |
4142 | ||
67c86d06 MM |
4143 | /* See target.h. */ |
4144 | ||
4145 | void | |
9a24775b | 4146 | target_insn_history (int size, gdb_disassembly_flags flags) |
67c86d06 | 4147 | { |
328d42d8 | 4148 | current_inferior ()->top_target ()->insn_history (size, flags); |
67c86d06 MM |
4149 | } |
4150 | ||
4151 | /* See target.h. */ | |
4152 | ||
4153 | void | |
9a24775b PA |
4154 | target_insn_history_from (ULONGEST from, int size, |
4155 | gdb_disassembly_flags flags) | |
67c86d06 | 4156 | { |
328d42d8 | 4157 | current_inferior ()->top_target ()->insn_history_from (from, size, flags); |
67c86d06 MM |
4158 | } |
4159 | ||
4160 | /* See target.h. */ | |
4161 | ||
4162 | void | |
9a24775b PA |
4163 | target_insn_history_range (ULONGEST begin, ULONGEST end, |
4164 | gdb_disassembly_flags flags) | |
67c86d06 | 4165 | { |
328d42d8 | 4166 | current_inferior ()->top_target ()->insn_history_range (begin, end, flags); |
67c86d06 MM |
4167 | } |
4168 | ||
15984c13 MM |
4169 | /* See target.h. */ |
4170 | ||
4171 | void | |
0cb7c7b0 | 4172 | target_call_history (int size, record_print_flags flags) |
15984c13 | 4173 | { |
328d42d8 | 4174 | current_inferior ()->top_target ()->call_history (size, flags); |
15984c13 MM |
4175 | } |
4176 | ||
4177 | /* See target.h. */ | |
4178 | ||
4179 | void | |
0cb7c7b0 | 4180 | target_call_history_from (ULONGEST begin, int size, record_print_flags flags) |
15984c13 | 4181 | { |
328d42d8 | 4182 | current_inferior ()->top_target ()->call_history_from (begin, size, flags); |
15984c13 MM |
4183 | } |
4184 | ||
4185 | /* See target.h. */ | |
4186 | ||
4187 | void | |
0cb7c7b0 | 4188 | target_call_history_range (ULONGEST begin, ULONGEST end, record_print_flags flags) |
15984c13 | 4189 | { |
328d42d8 | 4190 | current_inferior ()->top_target ()->call_history_range (begin, end, flags); |
15984c13 MM |
4191 | } |
4192 | ||
ea001bdc MM |
4193 | /* See target.h. */ |
4194 | ||
4195 | const struct frame_unwind * | |
4196 | target_get_unwinder (void) | |
4197 | { | |
328d42d8 | 4198 | return current_inferior ()->top_target ()->get_unwinder (); |
ea001bdc MM |
4199 | } |
4200 | ||
4201 | /* See target.h. */ | |
4202 | ||
4203 | const struct frame_unwind * | |
4204 | target_get_tailcall_unwinder (void) | |
4205 | { | |
328d42d8 | 4206 | return current_inferior ()->top_target ()->get_tailcall_unwinder (); |
ea001bdc MM |
4207 | } |
4208 | ||
5fff78c4 MM |
4209 | /* See target.h. */ |
4210 | ||
4211 | void | |
4212 | target_prepare_to_generate_core (void) | |
4213 | { | |
328d42d8 | 4214 | current_inferior ()->top_target ()->prepare_to_generate_core (); |
5fff78c4 MM |
4215 | } |
4216 | ||
4217 | /* See target.h. */ | |
4218 | ||
4219 | void | |
4220 | target_done_generating_core (void) | |
4221 | { | |
328d42d8 | 4222 | current_inferior ()->top_target ()->done_generating_core (); |
5fff78c4 MM |
4223 | } |
4224 | ||
c906108c | 4225 | \f |
c5aa993b JM |
4226 | |
4227 | static char targ_desc[] = | |
3e43a32a MS |
4228 | "Names of targets and files being debugged.\nShows the entire \ |
4229 | stack of targets currently in use (including the exec-file,\n\ | |
c906108c SS |
4230 | core-file, and process, if any), as well as the symbol file name."; |
4231 | ||
a53f3625 | 4232 | static void |
a30bf1f1 TT |
4233 | default_rcmd (struct target_ops *self, const char *command, |
4234 | struct ui_file *output) | |
a53f3625 TT |
4235 | { |
4236 | error (_("\"monitor\" command not supported by this target.")); | |
4237 | } | |
4238 | ||
96baa820 | 4239 | static void |
0b39b52e | 4240 | do_monitor_command (const char *cmd, int from_tty) |
96baa820 | 4241 | { |
96baa820 JM |
4242 | target_rcmd (cmd, gdb_stdtarg); |
4243 | } | |
4244 | ||
78cbbba8 LM |
4245 | /* Erases all the memory regions marked as flash. CMD and FROM_TTY are |
4246 | ignored. */ | |
4247 | ||
4248 | void | |
0b39b52e | 4249 | flash_erase_command (const char *cmd, int from_tty) |
78cbbba8 LM |
4250 | { |
4251 | /* Used to communicate termination of flash operations to the target. */ | |
4252 | bool found_flash_region = false; | |
99d9c3b9 | 4253 | gdbarch *gdbarch = current_inferior ()->arch (); |
78cbbba8 | 4254 | |
a664f67e | 4255 | std::vector<mem_region> mem_regions = target_memory_map (); |
78cbbba8 LM |
4256 | |
4257 | /* Iterate over all memory regions. */ | |
a664f67e | 4258 | for (const mem_region &m : mem_regions) |
78cbbba8 | 4259 | { |
78cbbba8 | 4260 | /* Is this a flash memory region? */ |
a664f67e | 4261 | if (m.attrib.mode == MEM_FLASH) |
dda83cd7 SM |
4262 | { |
4263 | found_flash_region = true; | |
4264 | target_flash_erase (m.lo, m.hi - m.lo); | |
78cbbba8 | 4265 | |
76f9c9cf | 4266 | ui_out_emit_tuple tuple_emitter (current_uiout, "erased-regions"); |
78cbbba8 | 4267 | |
dda83cd7 SM |
4268 | current_uiout->message (_("Erasing flash memory region at address ")); |
4269 | current_uiout->field_core_addr ("address", gdbarch, m.lo); | |
4270 | current_uiout->message (", size = "); | |
4271 | current_uiout->field_string ("size", hex_string (m.hi - m.lo)); | |
4272 | current_uiout->message ("\n"); | |
4273 | } | |
78cbbba8 LM |
4274 | } |
4275 | ||
4276 | /* Did we do any flash operations? If so, we need to finalize them. */ | |
4277 | if (found_flash_region) | |
4278 | target_flash_done (); | |
4279 | else | |
4280 | current_uiout->message (_("No flash memory regions found.\n")); | |
4281 | } | |
4282 | ||
87680a14 JB |
4283 | /* Print the name of each layers of our target stack. */ |
4284 | ||
4285 | static void | |
d3cb6b99 | 4286 | maintenance_print_target_stack (const char *cmd, int from_tty) |
87680a14 | 4287 | { |
6cb06a8c | 4288 | gdb_printf (_("The current target stack is:\n")); |
87680a14 | 4289 | |
328d42d8 SM |
4290 | for (target_ops *t = current_inferior ()->top_target (); |
4291 | t != NULL; | |
4292 | t = t->beneath ()) | |
87680a14 | 4293 | { |
66b4deae | 4294 | if (t->stratum () == debug_stratum) |
f6ac5f3d | 4295 | continue; |
6cb06a8c | 4296 | gdb_printf (" - %s (%s)\n", t->shortname (), t->longname ()); |
87680a14 JB |
4297 | } |
4298 | } | |
4299 | ||
372316f1 PA |
4300 | /* See target.h. */ |
4301 | ||
4302 | void | |
4a570176 | 4303 | target_async (bool enable) |
372316f1 | 4304 | { |
bf94662b AB |
4305 | /* If we are trying to enable async mode then it must be the case that |
4306 | async mode is possible for this target. */ | |
4307 | gdb_assert (!enable || target_can_async_p ()); | |
372316f1 | 4308 | infrun_async (enable); |
328d42d8 | 4309 | current_inferior ()->top_target ()->async (enable); |
372316f1 PA |
4310 | } |
4311 | ||
65706a29 PA |
4312 | /* See target.h. */ |
4313 | ||
4314 | void | |
4315 | target_thread_events (int enable) | |
4316 | { | |
328d42d8 | 4317 | current_inferior ()->top_target ()->thread_events (enable); |
65706a29 PA |
4318 | } |
4319 | ||
65c459ab PA |
4320 | /* See target.h. */ |
4321 | ||
4322 | bool | |
4323 | target_supports_set_thread_options (gdb_thread_options options) | |
4324 | { | |
4325 | inferior *inf = current_inferior (); | |
4326 | return inf->top_target ()->supports_set_thread_options (options); | |
4327 | } | |
4328 | ||
329ea579 PA |
4329 | /* Controls if targets can report that they can/are async. This is |
4330 | just for maintainers to use when debugging gdb. */ | |
491144b5 | 4331 | bool target_async_permitted = true; |
c6ebd6cf | 4332 | |
c6ebd6cf | 4333 | static void |
fdf1350d | 4334 | set_maint_target_async (bool permitted) |
c6ebd6cf | 4335 | { |
c35b1492 | 4336 | if (have_live_inferiors ()) |
fdf1350d | 4337 | error (_("Cannot change this setting while the inferior is running.")); |
c6ebd6cf | 4338 | |
fdf1350d SM |
4339 | target_async_permitted = permitted; |
4340 | } | |
4341 | ||
4342 | static bool | |
4343 | get_maint_target_async () | |
4344 | { | |
4345 | return target_async_permitted; | |
c6ebd6cf VP |
4346 | } |
4347 | ||
4348 | static void | |
fdf1350d SM |
4349 | show_maint_target_async (ui_file *file, int from_tty, |
4350 | cmd_list_element *c, const char *value) | |
c6ebd6cf | 4351 | { |
6cb06a8c TT |
4352 | gdb_printf (file, |
4353 | _("Controlling the inferior in " | |
4354 | "asynchronous mode is %s.\n"), value); | |
c6ebd6cf VP |
4355 | } |
4356 | ||
fbea99ea PA |
4357 | /* Return true if the target operates in non-stop mode even with "set |
4358 | non-stop off". */ | |
4359 | ||
4360 | static int | |
4361 | target_always_non_stop_p (void) | |
4362 | { | |
328d42d8 | 4363 | return current_inferior ()->top_target ()->always_non_stop_p (); |
fbea99ea PA |
4364 | } |
4365 | ||
4366 | /* See target.h. */ | |
4367 | ||
6ff267e1 SM |
4368 | bool |
4369 | target_is_non_stop_p () | |
fbea99ea | 4370 | { |
e5b9b39f PA |
4371 | return ((non_stop |
4372 | || target_non_stop_enabled == AUTO_BOOLEAN_TRUE | |
4373 | || (target_non_stop_enabled == AUTO_BOOLEAN_AUTO | |
4374 | && target_always_non_stop_p ())) | |
4375 | && target_can_async_p ()); | |
fbea99ea PA |
4376 | } |
4377 | ||
a0714d30 TBA |
4378 | /* See target.h. */ |
4379 | ||
4380 | bool | |
4381 | exists_non_stop_target () | |
4382 | { | |
4383 | if (target_is_non_stop_p ()) | |
4384 | return true; | |
4385 | ||
4386 | scoped_restore_current_thread restore_thread; | |
4387 | ||
4388 | for (inferior *inf : all_inferiors ()) | |
4389 | { | |
4390 | switch_to_inferior_no_thread (inf); | |
4391 | if (target_is_non_stop_p ()) | |
4392 | return true; | |
4393 | } | |
4394 | ||
4395 | return false; | |
4396 | } | |
4397 | ||
fbea99ea PA |
4398 | /* Controls if targets can report that they always run in non-stop |
4399 | mode. This is just for maintainers to use when debugging gdb. */ | |
4400 | enum auto_boolean target_non_stop_enabled = AUTO_BOOLEAN_AUTO; | |
4401 | ||
fdf1350d | 4402 | /* Set callback for maint target-non-stop setting. */ |
fbea99ea PA |
4403 | |
4404 | static void | |
fdf1350d | 4405 | set_maint_target_non_stop (auto_boolean enabled) |
fbea99ea PA |
4406 | { |
4407 | if (have_live_inferiors ()) | |
fdf1350d | 4408 | error (_("Cannot change this setting while the inferior is running.")); |
fbea99ea | 4409 | |
fdf1350d | 4410 | target_non_stop_enabled = enabled; |
fbea99ea PA |
4411 | } |
4412 | ||
fdf1350d SM |
4413 | /* Get callback for maint target-non-stop setting. */ |
4414 | ||
4415 | static auto_boolean | |
4416 | get_maint_target_non_stop () | |
4417 | { | |
4418 | return target_non_stop_enabled; | |
4419 | } | |
fbea99ea PA |
4420 | |
4421 | static void | |
fdf1350d SM |
4422 | show_maint_target_non_stop (ui_file *file, int from_tty, |
4423 | cmd_list_element *c, const char *value) | |
fbea99ea PA |
4424 | { |
4425 | if (target_non_stop_enabled == AUTO_BOOLEAN_AUTO) | |
6cb06a8c TT |
4426 | gdb_printf (file, |
4427 | _("Whether the target is always in non-stop mode " | |
4428 | "is %s (currently %s).\n"), value, | |
4429 | target_always_non_stop_p () ? "on" : "off"); | |
fbea99ea | 4430 | else |
6cb06a8c TT |
4431 | gdb_printf (file, |
4432 | _("Whether the target is always in non-stop mode " | |
4433 | "is %s.\n"), value); | |
fbea99ea PA |
4434 | } |
4435 | ||
d914c394 SS |
4436 | /* Temporary copies of permission settings. */ |
4437 | ||
491144b5 CB |
4438 | static bool may_write_registers_1 = true; |
4439 | static bool may_write_memory_1 = true; | |
4440 | static bool may_insert_breakpoints_1 = true; | |
4441 | static bool may_insert_tracepoints_1 = true; | |
4442 | static bool may_insert_fast_tracepoints_1 = true; | |
4443 | static bool may_stop_1 = true; | |
d914c394 SS |
4444 | |
4445 | /* Make the user-set values match the real values again. */ | |
4446 | ||
4447 | void | |
4448 | update_target_permissions (void) | |
4449 | { | |
4450 | may_write_registers_1 = may_write_registers; | |
4451 | may_write_memory_1 = may_write_memory; | |
4452 | may_insert_breakpoints_1 = may_insert_breakpoints; | |
4453 | may_insert_tracepoints_1 = may_insert_tracepoints; | |
4454 | may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints; | |
4455 | may_stop_1 = may_stop; | |
4456 | } | |
4457 | ||
4458 | /* The one function handles (most of) the permission flags in the same | |
4459 | way. */ | |
4460 | ||
4461 | static void | |
eb4c3f4a | 4462 | set_target_permissions (const char *args, int from_tty, |
d914c394 SS |
4463 | struct cmd_list_element *c) |
4464 | { | |
55f6301a | 4465 | if (target_has_execution ()) |
d914c394 SS |
4466 | { |
4467 | update_target_permissions (); | |
4468 | error (_("Cannot change this setting while the inferior is running.")); | |
4469 | } | |
4470 | ||
4471 | /* Make the real values match the user-changed values. */ | |
d914c394 SS |
4472 | may_insert_breakpoints = may_insert_breakpoints_1; |
4473 | may_insert_tracepoints = may_insert_tracepoints_1; | |
4474 | may_insert_fast_tracepoints = may_insert_fast_tracepoints_1; | |
4475 | may_stop = may_stop_1; | |
4476 | update_observer_mode (); | |
4477 | } | |
4478 | ||
d8a001f5 | 4479 | /* Set some permissions independently of observer mode. */ |
d914c394 SS |
4480 | |
4481 | static void | |
d8a001f5 TT |
4482 | set_write_memory_registers_permission (const char *args, int from_tty, |
4483 | struct cmd_list_element *c) | |
d914c394 SS |
4484 | { |
4485 | /* Make the real values match the user-changed values. */ | |
4486 | may_write_memory = may_write_memory_1; | |
d8a001f5 | 4487 | may_write_registers = may_write_registers_1; |
d914c394 SS |
4488 | update_observer_mode (); |
4489 | } | |
4490 | ||
6c265988 SM |
4491 | void _initialize_target (); |
4492 | ||
c906108c | 4493 | void |
5b6d1e4f | 4494 | _initialize_target () |
c906108c | 4495 | { |
f6ac5f3d | 4496 | the_debug_target = new debug_target (); |
c906108c | 4497 | |
11db9430 SM |
4498 | add_info ("target", info_target_command, targ_desc); |
4499 | add_info ("files", info_target_command, targ_desc); | |
c906108c | 4500 | |
ccce17b0 | 4501 | add_setshow_zuinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
85c07804 AC |
4502 | Set target debugging."), _("\ |
4503 | Show target debugging."), _("\ | |
333dabeb | 4504 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
3cecbbbe TT |
4505 | verbose."), |
4506 | set_targetdebug, | |
ccce17b0 YQ |
4507 | show_targetdebug, |
4508 | &setdebuglist, &showdebuglist); | |
3a11626d | 4509 | |
2bc416ba | 4510 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
4511 | &trust_readonly, _("\ |
4512 | Set mode for reading from readonly sections."), _("\ | |
4513 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
4514 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
4515 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 4516 | result in significant performance improvement for remote targets."), |
2c5b56ce | 4517 | NULL, |
920d2a44 | 4518 | show_trust_readonly, |
e707bbc2 | 4519 | &setlist, &showlist); |
96baa820 JM |
4520 | |
4521 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 4522 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 4523 | |
87680a14 | 4524 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
dda83cd7 SM |
4525 | _("Print the name of each layer of the internal target stack."), |
4526 | &maintenanceprintlist); | |
87680a14 | 4527 | |
c6ebd6cf | 4528 | add_setshow_boolean_cmd ("target-async", no_class, |
fdf1350d | 4529 | _("\ |
c6ebd6cf VP |
4530 | Set whether gdb controls the inferior in asynchronous mode."), _("\ |
4531 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
4532 | Tells gdb whether to control the inferior in asynchronous mode."), | |
fdf1350d SM |
4533 | set_maint_target_async, |
4534 | get_maint_target_async, | |
4535 | show_maint_target_async, | |
329ea579 PA |
4536 | &maintenance_set_cmdlist, |
4537 | &maintenance_show_cmdlist); | |
c6ebd6cf | 4538 | |
fbea99ea | 4539 | add_setshow_auto_boolean_cmd ("target-non-stop", no_class, |
fdf1350d | 4540 | _("\ |
fbea99ea PA |
4541 | Set whether gdb always controls the inferior in non-stop mode."), _("\ |
4542 | Show whether gdb always controls the inferior in non-stop mode."), _("\ | |
4543 | Tells gdb whether to control the inferior in non-stop mode."), | |
fdf1350d SM |
4544 | set_maint_target_non_stop, |
4545 | get_maint_target_non_stop, | |
4546 | show_maint_target_non_stop, | |
fbea99ea PA |
4547 | &maintenance_set_cmdlist, |
4548 | &maintenance_show_cmdlist); | |
4549 | ||
d914c394 SS |
4550 | add_setshow_boolean_cmd ("may-write-registers", class_support, |
4551 | &may_write_registers_1, _("\ | |
4552 | Set permission to write into registers."), _("\ | |
4553 | Show permission to write into registers."), _("\ | |
4554 | When this permission is on, GDB may write into the target's registers.\n\ | |
4555 | Otherwise, any sort of write attempt will result in an error."), | |
d8a001f5 | 4556 | set_write_memory_registers_permission, NULL, |
d914c394 SS |
4557 | &setlist, &showlist); |
4558 | ||
4559 | add_setshow_boolean_cmd ("may-write-memory", class_support, | |
4560 | &may_write_memory_1, _("\ | |
4561 | Set permission to write into target memory."), _("\ | |
4562 | Show permission to write into target memory."), _("\ | |
4563 | When this permission is on, GDB may write into the target's memory.\n\ | |
4564 | Otherwise, any sort of write attempt will result in an error."), | |
d8a001f5 | 4565 | set_write_memory_registers_permission, NULL, |
d914c394 SS |
4566 | &setlist, &showlist); |
4567 | ||
4568 | add_setshow_boolean_cmd ("may-insert-breakpoints", class_support, | |
4569 | &may_insert_breakpoints_1, _("\ | |
4570 | Set permission to insert breakpoints in the target."), _("\ | |
4571 | Show permission to insert breakpoints in the target."), _("\ | |
4572 | When this permission is on, GDB may insert breakpoints in the program.\n\ | |
4573 | Otherwise, any sort of insertion attempt will result in an error."), | |
4574 | set_target_permissions, NULL, | |
4575 | &setlist, &showlist); | |
4576 | ||
4577 | add_setshow_boolean_cmd ("may-insert-tracepoints", class_support, | |
4578 | &may_insert_tracepoints_1, _("\ | |
4579 | Set permission to insert tracepoints in the target."), _("\ | |
4580 | Show permission to insert tracepoints in the target."), _("\ | |
4581 | When this permission is on, GDB may insert tracepoints in the program.\n\ | |
4582 | Otherwise, any sort of insertion attempt will result in an error."), | |
4583 | set_target_permissions, NULL, | |
4584 | &setlist, &showlist); | |
4585 | ||
4586 | add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support, | |
4587 | &may_insert_fast_tracepoints_1, _("\ | |
4588 | Set permission to insert fast tracepoints in the target."), _("\ | |
4589 | Show permission to insert fast tracepoints in the target."), _("\ | |
4590 | When this permission is on, GDB may insert fast tracepoints.\n\ | |
4591 | Otherwise, any sort of insertion attempt will result in an error."), | |
4592 | set_target_permissions, NULL, | |
4593 | &setlist, &showlist); | |
4594 | ||
4595 | add_setshow_boolean_cmd ("may-interrupt", class_support, | |
4596 | &may_stop_1, _("\ | |
4597 | Set permission to interrupt or signal the target."), _("\ | |
4598 | Show permission to interrupt or signal the target."), _("\ | |
4599 | When this permission is on, GDB may interrupt/stop the target's execution.\n\ | |
4600 | Otherwise, any attempt to interrupt or stop will be ignored."), | |
4601 | set_target_permissions, NULL, | |
4602 | &setlist, &showlist); | |
6a3cb8e8 | 4603 | |
78cbbba8 | 4604 | add_com ("flash-erase", no_class, flash_erase_command, |
dda83cd7 | 4605 | _("Erase all flash memory regions.")); |
78cbbba8 | 4606 | |
6a3cb8e8 PA |
4607 | add_setshow_boolean_cmd ("auto-connect-native-target", class_support, |
4608 | &auto_connect_native_target, _("\ | |
4609 | Set whether GDB may automatically connect to the native target."), _("\ | |
4610 | Show whether GDB may automatically connect to the native target."), _("\ | |
4611 | When on, and GDB is not connected to a target yet, GDB\n\ | |
4612 | attempts \"run\" and other commands with the native target."), | |
4613 | NULL, show_auto_connect_native_target, | |
4614 | &setlist, &showlist); | |
c906108c | 4615 | } |