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c906108c | 1 | /* Select target systems and architectures at runtime for GDB. |
7998dfc3 | 2 | |
213516ef | 3 | Copyright (C) 1990-2023 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 SS |
21 | |
22 | #include "defs.h" | |
c906108c | 23 | #include "target.h" |
68c765e2 | 24 | #include "target-dcache.h" |
c906108c SS |
25 | #include "gdbcmd.h" |
26 | #include "symtab.h" | |
27 | #include "inferior.h" | |
45741a9c | 28 | #include "infrun.h" |
fb85cece | 29 | #include "observable.h" |
c906108c SS |
30 | #include "bfd.h" |
31 | #include "symfile.h" | |
32 | #include "objfiles.h" | |
4930751a | 33 | #include "dcache.h" |
c906108c | 34 | #include <signal.h> |
4e052eda | 35 | #include "regcache.h" |
b6591e8b | 36 | #include "gdbcore.h" |
424163ea | 37 | #include "target-descriptions.h" |
e1ac3328 | 38 | #include "gdbthread.h" |
b9db4ced | 39 | #include "solib.h" |
07b82ea5 | 40 | #include "exec.h" |
edb3359d | 41 | #include "inline-frame.h" |
2f4d8875 | 42 | #include "tracepoint.h" |
198f946f | 43 | #include "gdbsupport/fileio.h" |
268a13a5 | 44 | #include "gdbsupport/agent.h" |
8de71aab | 45 | #include "auxv.h" |
a7068b60 | 46 | #include "target-debug.h" |
13d03262 | 47 | #include "ui.h" |
41fd2b0f | 48 | #include "event-top.h" |
325fac50 | 49 | #include <algorithm> |
268a13a5 | 50 | #include "gdbsupport/byte-vector.h" |
4a72de73 | 51 | #include "gdbsupport/search.h" |
e671cd59 | 52 | #include "terminal.h" |
d9f719f1 | 53 | #include <unordered_map> |
121b3efd | 54 | #include "target-connection.h" |
670e35fa | 55 | #include "valprint.h" |
0f8e2034 | 56 | #include "cli/cli-decode.h" |
c906108c | 57 | |
f0f9ff95 TT |
58 | static void generic_tls_error (void) ATTRIBUTE_NORETURN; |
59 | ||
a30bf1f1 | 60 | static void default_rcmd (struct target_ops *, const char *, struct ui_file *); |
a53f3625 | 61 | |
936d2992 PA |
62 | static int default_verify_memory (struct target_ops *self, |
63 | const gdb_byte *data, | |
64 | CORE_ADDR memaddr, ULONGEST size); | |
65 | ||
c25c4a8b | 66 | static void tcomplain (void) ATTRIBUTE_NORETURN; |
c906108c | 67 | |
d9f719f1 PA |
68 | /* Mapping between target_info objects (which have address identity) |
69 | and corresponding open/factory function/callback. Each add_target | |
70 | call adds one entry to this map, and registers a "target | |
71 | TARGET_NAME" command that when invoked calls the factory registered | |
72 | here. The target_info object is associated with the command via | |
73 | the command's context. */ | |
74 | static std::unordered_map<const target_info *, target_open_ftype *> | |
75 | target_factories; | |
c906108c | 76 | |
06b5b831 | 77 | /* The singleton debug target. */ |
c906108c | 78 | |
f6ac5f3d | 79 | static struct target_ops *the_debug_target; |
c906108c | 80 | |
c906108c SS |
81 | /* Command list for target. */ |
82 | ||
83 | static struct cmd_list_element *targetlist = NULL; | |
84 | ||
358be6e7 | 85 | /* See target.h. */ |
cf7a04e8 | 86 | |
358be6e7 | 87 | bool trust_readonly = false; |
cf7a04e8 | 88 | |
8defab1a DJ |
89 | /* Nonzero if we should show true memory content including |
90 | memory breakpoint inserted by gdb. */ | |
91 | ||
92 | static int show_memory_breakpoints = 0; | |
93 | ||
d914c394 SS |
94 | /* These globals control whether GDB attempts to perform these |
95 | operations; they are useful for targets that need to prevent | |
30baf67b | 96 | inadvertent disruption, such as in non-stop mode. */ |
d914c394 | 97 | |
491144b5 | 98 | bool may_write_registers = true; |
d914c394 | 99 | |
491144b5 | 100 | bool may_write_memory = true; |
d914c394 | 101 | |
491144b5 | 102 | bool may_insert_breakpoints = true; |
d914c394 | 103 | |
491144b5 | 104 | bool may_insert_tracepoints = true; |
d914c394 | 105 | |
491144b5 | 106 | bool may_insert_fast_tracepoints = true; |
d914c394 | 107 | |
491144b5 | 108 | bool may_stop = true; |
d914c394 | 109 | |
c906108c SS |
110 | /* Non-zero if we want to see trace of target level stuff. */ |
111 | ||
ccce17b0 | 112 | static unsigned int targetdebug = 0; |
3cecbbbe TT |
113 | |
114 | static void | |
eb4c3f4a | 115 | set_targetdebug (const char *args, int from_tty, struct cmd_list_element *c) |
3cecbbbe | 116 | { |
f6ac5f3d | 117 | if (targetdebug) |
02980c56 | 118 | current_inferior ()->push_target (the_debug_target); |
f6ac5f3d | 119 | else |
fadf6add | 120 | current_inferior ()->unpush_target (the_debug_target); |
3cecbbbe TT |
121 | } |
122 | ||
920d2a44 AC |
123 | static void |
124 | show_targetdebug (struct ui_file *file, int from_tty, | |
125 | struct cmd_list_element *c, const char *value) | |
126 | { | |
6cb06a8c | 127 | gdb_printf (file, _("Target debugging is %s.\n"), value); |
920d2a44 | 128 | } |
c906108c | 129 | |
c35b1492 | 130 | int |
a739972c | 131 | target_has_memory () |
c35b1492 | 132 | { |
328d42d8 SM |
133 | for (target_ops *t = current_inferior ()->top_target (); |
134 | t != NULL; | |
135 | t = t->beneath ()) | |
f6ac5f3d | 136 | if (t->has_memory ()) |
c35b1492 PA |
137 | return 1; |
138 | ||
139 | return 0; | |
140 | } | |
141 | ||
142 | int | |
841de120 | 143 | target_has_stack () |
c35b1492 | 144 | { |
328d42d8 SM |
145 | for (target_ops *t = current_inferior ()->top_target (); |
146 | t != NULL; | |
147 | t = t->beneath ()) | |
f6ac5f3d | 148 | if (t->has_stack ()) |
c35b1492 PA |
149 | return 1; |
150 | ||
151 | return 0; | |
152 | } | |
153 | ||
154 | int | |
9dccd06e | 155 | target_has_registers () |
c35b1492 | 156 | { |
328d42d8 SM |
157 | for (target_ops *t = current_inferior ()->top_target (); |
158 | t != NULL; | |
159 | t = t->beneath ()) | |
f6ac5f3d | 160 | if (t->has_registers ()) |
c35b1492 PA |
161 | return 1; |
162 | ||
163 | return 0; | |
164 | } | |
165 | ||
5018ce90 | 166 | bool |
55f6301a | 167 | target_has_execution (inferior *inf) |
c35b1492 | 168 | { |
55f6301a TT |
169 | if (inf == nullptr) |
170 | inf = current_inferior (); | |
171 | ||
5b6d1e4f PA |
172 | for (target_ops *t = inf->top_target (); |
173 | t != nullptr; | |
174 | t = inf->find_target_beneath (t)) | |
5018ce90 PA |
175 | if (t->has_execution (inf)) |
176 | return true; | |
c35b1492 | 177 | |
5018ce90 | 178 | return false; |
c35b1492 PA |
179 | } |
180 | ||
d777bf0d SM |
181 | const char * |
182 | target_shortname () | |
183 | { | |
328d42d8 | 184 | return current_inferior ()->top_target ()->shortname (); |
d777bf0d SM |
185 | } |
186 | ||
187 | /* See target.h. */ | |
188 | ||
189 | bool | |
190 | target_attach_no_wait () | |
191 | { | |
328d42d8 | 192 | return current_inferior ()->top_target ()->attach_no_wait (); |
d777bf0d SM |
193 | } |
194 | ||
195 | /* See target.h. */ | |
196 | ||
197 | void | |
198 | target_post_attach (int pid) | |
199 | { | |
328d42d8 | 200 | return current_inferior ()->top_target ()->post_attach (pid); |
d777bf0d SM |
201 | } |
202 | ||
203 | /* See target.h. */ | |
204 | ||
205 | void | |
206 | target_prepare_to_store (regcache *regcache) | |
207 | { | |
328d42d8 | 208 | return current_inferior ()->top_target ()->prepare_to_store (regcache); |
d777bf0d SM |
209 | } |
210 | ||
211 | /* See target.h. */ | |
212 | ||
213 | bool | |
214 | target_supports_enable_disable_tracepoint () | |
215 | { | |
328d42d8 SM |
216 | target_ops *target = current_inferior ()->top_target (); |
217 | ||
218 | return target->supports_enable_disable_tracepoint (); | |
d777bf0d SM |
219 | } |
220 | ||
221 | bool | |
222 | target_supports_string_tracing () | |
223 | { | |
328d42d8 | 224 | return current_inferior ()->top_target ()->supports_string_tracing (); |
d777bf0d SM |
225 | } |
226 | ||
227 | /* See target.h. */ | |
228 | ||
229 | bool | |
230 | target_supports_evaluation_of_breakpoint_conditions () | |
231 | { | |
328d42d8 SM |
232 | target_ops *target = current_inferior ()->top_target (); |
233 | ||
234 | return target->supports_evaluation_of_breakpoint_conditions (); | |
d777bf0d SM |
235 | } |
236 | ||
237 | /* See target.h. */ | |
238 | ||
239 | bool | |
240 | target_supports_dumpcore () | |
241 | { | |
328d42d8 | 242 | return current_inferior ()->top_target ()->supports_dumpcore (); |
d777bf0d SM |
243 | } |
244 | ||
245 | /* See target.h. */ | |
246 | ||
247 | void | |
248 | target_dumpcore (const char *filename) | |
249 | { | |
328d42d8 | 250 | return current_inferior ()->top_target ()->dumpcore (filename); |
d777bf0d SM |
251 | } |
252 | ||
253 | /* See target.h. */ | |
254 | ||
255 | bool | |
256 | target_can_run_breakpoint_commands () | |
257 | { | |
328d42d8 | 258 | return current_inferior ()->top_target ()->can_run_breakpoint_commands (); |
d777bf0d SM |
259 | } |
260 | ||
261 | /* See target.h. */ | |
262 | ||
263 | void | |
264 | target_files_info () | |
265 | { | |
328d42d8 | 266 | return current_inferior ()->top_target ()->files_info (); |
d777bf0d SM |
267 | } |
268 | ||
269 | /* See target.h. */ | |
d777bf0d SM |
270 | |
271 | int | |
272 | target_insert_fork_catchpoint (int pid) | |
273 | { | |
328d42d8 | 274 | return current_inferior ()->top_target ()->insert_fork_catchpoint (pid); |
d777bf0d SM |
275 | } |
276 | ||
277 | /* See target.h. */ | |
278 | ||
279 | int | |
280 | target_remove_fork_catchpoint (int pid) | |
281 | { | |
328d42d8 | 282 | return current_inferior ()->top_target ()->remove_fork_catchpoint (pid); |
d777bf0d SM |
283 | } |
284 | ||
285 | /* See target.h. */ | |
286 | ||
287 | int | |
288 | target_insert_vfork_catchpoint (int pid) | |
289 | { | |
328d42d8 | 290 | return current_inferior ()->top_target ()->insert_vfork_catchpoint (pid); |
d777bf0d SM |
291 | } |
292 | ||
293 | /* See target.h. */ | |
294 | ||
295 | int | |
296 | target_remove_vfork_catchpoint (int pid) | |
297 | { | |
328d42d8 | 298 | return current_inferior ()->top_target ()->remove_vfork_catchpoint (pid); |
d777bf0d SM |
299 | } |
300 | ||
301 | /* See target.h. */ | |
302 | ||
303 | int | |
304 | target_insert_exec_catchpoint (int pid) | |
305 | { | |
328d42d8 | 306 | return current_inferior ()->top_target ()->insert_exec_catchpoint (pid); |
d777bf0d SM |
307 | } |
308 | ||
309 | /* See target.h. */ | |
310 | ||
311 | int | |
312 | target_remove_exec_catchpoint (int pid) | |
313 | { | |
328d42d8 | 314 | return current_inferior ()->top_target ()->remove_exec_catchpoint (pid); |
d777bf0d SM |
315 | } |
316 | ||
317 | /* See target.h. */ | |
318 | ||
319 | int | |
320 | target_set_syscall_catchpoint (int pid, bool needed, int any_count, | |
321 | gdb::array_view<const int> syscall_counts) | |
322 | { | |
328d42d8 SM |
323 | target_ops *target = current_inferior ()->top_target (); |
324 | ||
325 | return target->set_syscall_catchpoint (pid, needed, any_count, | |
326 | syscall_counts); | |
d777bf0d SM |
327 | } |
328 | ||
329 | /* See target.h. */ | |
330 | ||
331 | void | |
332 | target_rcmd (const char *command, struct ui_file *outbuf) | |
333 | { | |
328d42d8 | 334 | return current_inferior ()->top_target ()->rcmd (command, outbuf); |
d777bf0d SM |
335 | } |
336 | ||
337 | /* See target.h. */ | |
338 | ||
339 | bool | |
340 | target_can_lock_scheduler () | |
341 | { | |
328d42d8 SM |
342 | target_ops *target = current_inferior ()->top_target (); |
343 | ||
344 | return (target->get_thread_control_capabilities ()& tc_schedlock) != 0; | |
d777bf0d SM |
345 | } |
346 | ||
347 | /* See target.h. */ | |
348 | ||
349 | bool | |
350 | target_can_async_p () | |
351 | { | |
0c1e6e26 AB |
352 | return target_can_async_p (current_inferior ()->top_target ()); |
353 | } | |
354 | ||
355 | /* See target.h. */ | |
356 | ||
357 | bool | |
358 | target_can_async_p (struct target_ops *target) | |
359 | { | |
fce6cd34 AB |
360 | if (!target_async_permitted) |
361 | return false; | |
0c1e6e26 | 362 | return target->can_async_p (); |
d777bf0d SM |
363 | } |
364 | ||
365 | /* See target.h. */ | |
366 | ||
367 | bool | |
368 | target_is_async_p () | |
369 | { | |
bf94662b AB |
370 | bool result = current_inferior ()->top_target ()->is_async_p (); |
371 | gdb_assert (target_async_permitted || !result); | |
372 | return result; | |
d777bf0d SM |
373 | } |
374 | ||
375 | exec_direction_kind | |
376 | target_execution_direction () | |
377 | { | |
328d42d8 | 378 | return current_inferior ()->top_target ()->execution_direction (); |
d777bf0d SM |
379 | } |
380 | ||
381 | /* See target.h. */ | |
382 | ||
383 | const char * | |
384 | target_extra_thread_info (thread_info *tp) | |
385 | { | |
328d42d8 | 386 | return current_inferior ()->top_target ()->extra_thread_info (tp); |
d777bf0d SM |
387 | } |
388 | ||
389 | /* See target.h. */ | |
390 | ||
0e90c441 | 391 | const char * |
d777bf0d SM |
392 | target_pid_to_exec_file (int pid) |
393 | { | |
328d42d8 | 394 | return current_inferior ()->top_target ()->pid_to_exec_file (pid); |
d777bf0d SM |
395 | } |
396 | ||
397 | /* See target.h. */ | |
398 | ||
399 | gdbarch * | |
400 | target_thread_architecture (ptid_t ptid) | |
401 | { | |
328d42d8 | 402 | return current_inferior ()->top_target ()->thread_architecture (ptid); |
d777bf0d SM |
403 | } |
404 | ||
405 | /* See target.h. */ | |
406 | ||
407 | int | |
408 | target_find_memory_regions (find_memory_region_ftype func, void *data) | |
409 | { | |
328d42d8 | 410 | return current_inferior ()->top_target ()->find_memory_regions (func, data); |
d777bf0d SM |
411 | } |
412 | ||
413 | /* See target.h. */ | |
414 | ||
415 | gdb::unique_xmalloc_ptr<char> | |
416 | target_make_corefile_notes (bfd *bfd, int *size_p) | |
417 | { | |
328d42d8 | 418 | return current_inferior ()->top_target ()->make_corefile_notes (bfd, size_p); |
d777bf0d SM |
419 | } |
420 | ||
421 | gdb_byte * | |
422 | target_get_bookmark (const char *args, int from_tty) | |
423 | { | |
328d42d8 | 424 | return current_inferior ()->top_target ()->get_bookmark (args, from_tty); |
d777bf0d SM |
425 | } |
426 | ||
427 | void | |
428 | target_goto_bookmark (const gdb_byte *arg, int from_tty) | |
429 | { | |
328d42d8 | 430 | return current_inferior ()->top_target ()->goto_bookmark (arg, from_tty); |
d777bf0d SM |
431 | } |
432 | ||
433 | /* See target.h. */ | |
434 | ||
435 | bool | |
436 | target_stopped_by_watchpoint () | |
437 | { | |
328d42d8 | 438 | return current_inferior ()->top_target ()->stopped_by_watchpoint (); |
d777bf0d SM |
439 | } |
440 | ||
441 | /* See target.h. */ | |
442 | ||
443 | bool | |
444 | target_stopped_by_sw_breakpoint () | |
445 | { | |
328d42d8 | 446 | return current_inferior ()->top_target ()->stopped_by_sw_breakpoint (); |
d777bf0d SM |
447 | } |
448 | ||
449 | bool | |
450 | target_supports_stopped_by_sw_breakpoint () | |
451 | { | |
328d42d8 SM |
452 | target_ops *target = current_inferior ()->top_target (); |
453 | ||
454 | return target->supports_stopped_by_sw_breakpoint (); | |
d777bf0d SM |
455 | } |
456 | ||
457 | bool | |
458 | target_stopped_by_hw_breakpoint () | |
459 | { | |
328d42d8 | 460 | return current_inferior ()->top_target ()->stopped_by_hw_breakpoint (); |
d777bf0d SM |
461 | } |
462 | ||
463 | bool | |
464 | target_supports_stopped_by_hw_breakpoint () | |
465 | { | |
328d42d8 SM |
466 | target_ops *target = current_inferior ()->top_target (); |
467 | ||
468 | return target->supports_stopped_by_hw_breakpoint (); | |
d777bf0d SM |
469 | } |
470 | ||
471 | /* See target.h. */ | |
472 | ||
473 | bool | |
474 | target_have_steppable_watchpoint () | |
475 | { | |
328d42d8 | 476 | return current_inferior ()->top_target ()->have_steppable_watchpoint (); |
d777bf0d SM |
477 | } |
478 | ||
479 | /* See target.h. */ | |
480 | ||
481 | int | |
482 | target_can_use_hardware_watchpoint (bptype type, int cnt, int othertype) | |
483 | { | |
328d42d8 SM |
484 | target_ops *target = current_inferior ()->top_target (); |
485 | ||
486 | return target->can_use_hw_breakpoint (type, cnt, othertype); | |
d777bf0d SM |
487 | } |
488 | ||
489 | /* See target.h. */ | |
490 | ||
491 | int | |
492 | target_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
493 | { | |
328d42d8 SM |
494 | target_ops *target = current_inferior ()->top_target (); |
495 | ||
496 | return target->region_ok_for_hw_watchpoint (addr, len); | |
d777bf0d SM |
497 | } |
498 | ||
499 | ||
500 | int | |
501 | target_can_do_single_step () | |
502 | { | |
328d42d8 | 503 | return current_inferior ()->top_target ()->can_do_single_step (); |
d777bf0d SM |
504 | } |
505 | ||
506 | /* See target.h. */ | |
507 | ||
508 | int | |
509 | target_insert_watchpoint (CORE_ADDR addr, int len, target_hw_bp_type type, | |
510 | expression *cond) | |
511 | { | |
328d42d8 SM |
512 | target_ops *target = current_inferior ()->top_target (); |
513 | ||
514 | return target->insert_watchpoint (addr, len, type, cond); | |
d777bf0d SM |
515 | } |
516 | ||
517 | /* See target.h. */ | |
518 | ||
519 | int | |
520 | target_remove_watchpoint (CORE_ADDR addr, int len, target_hw_bp_type type, | |
521 | expression *cond) | |
522 | { | |
328d42d8 SM |
523 | target_ops *target = current_inferior ()->top_target (); |
524 | ||
525 | return target->remove_watchpoint (addr, len, type, cond); | |
d777bf0d SM |
526 | } |
527 | ||
528 | /* See target.h. */ | |
529 | ||
530 | int | |
531 | target_insert_hw_breakpoint (gdbarch *gdbarch, bp_target_info *bp_tgt) | |
532 | { | |
328d42d8 SM |
533 | target_ops *target = current_inferior ()->top_target (); |
534 | ||
535 | return target->insert_hw_breakpoint (gdbarch, bp_tgt); | |
d777bf0d SM |
536 | } |
537 | ||
538 | /* See target.h. */ | |
539 | ||
540 | int | |
541 | target_remove_hw_breakpoint (gdbarch *gdbarch, bp_target_info *bp_tgt) | |
542 | { | |
328d42d8 SM |
543 | target_ops *target = current_inferior ()->top_target (); |
544 | ||
545 | return target->remove_hw_breakpoint (gdbarch, bp_tgt); | |
d777bf0d SM |
546 | } |
547 | ||
548 | /* See target.h. */ | |
549 | ||
550 | bool | |
551 | target_can_accel_watchpoint_condition (CORE_ADDR addr, int len, int type, | |
552 | expression *cond) | |
553 | { | |
328d42d8 SM |
554 | target_ops *target = current_inferior ()->top_target (); |
555 | ||
556 | return target->can_accel_watchpoint_condition (addr, len, type, cond); | |
d777bf0d SM |
557 | } |
558 | ||
559 | /* See target.h. */ | |
560 | ||
561 | bool | |
562 | target_can_execute_reverse () | |
563 | { | |
328d42d8 | 564 | return current_inferior ()->top_target ()->can_execute_reverse (); |
d777bf0d SM |
565 | } |
566 | ||
567 | ptid_t | |
c80e29db | 568 | target_get_ada_task_ptid (long lwp, ULONGEST tid) |
d777bf0d | 569 | { |
328d42d8 | 570 | return current_inferior ()->top_target ()->get_ada_task_ptid (lwp, tid); |
d777bf0d SM |
571 | } |
572 | ||
573 | bool | |
574 | target_filesystem_is_local () | |
575 | { | |
328d42d8 | 576 | return current_inferior ()->top_target ()->filesystem_is_local (); |
d777bf0d SM |
577 | } |
578 | ||
579 | void | |
580 | target_trace_init () | |
581 | { | |
328d42d8 | 582 | return current_inferior ()->top_target ()->trace_init (); |
d777bf0d SM |
583 | } |
584 | ||
585 | void | |
586 | target_download_tracepoint (bp_location *location) | |
587 | { | |
328d42d8 | 588 | return current_inferior ()->top_target ()->download_tracepoint (location); |
d777bf0d SM |
589 | } |
590 | ||
591 | bool | |
592 | target_can_download_tracepoint () | |
593 | { | |
328d42d8 | 594 | return current_inferior ()->top_target ()->can_download_tracepoint (); |
d777bf0d SM |
595 | } |
596 | ||
597 | void | |
598 | target_download_trace_state_variable (const trace_state_variable &tsv) | |
599 | { | |
328d42d8 SM |
600 | target_ops *target = current_inferior ()->top_target (); |
601 | ||
602 | return target->download_trace_state_variable (tsv); | |
d777bf0d SM |
603 | } |
604 | ||
605 | void | |
606 | target_enable_tracepoint (bp_location *loc) | |
607 | { | |
328d42d8 | 608 | return current_inferior ()->top_target ()->enable_tracepoint (loc); |
d777bf0d SM |
609 | } |
610 | ||
611 | void | |
612 | target_disable_tracepoint (bp_location *loc) | |
613 | { | |
328d42d8 | 614 | return current_inferior ()->top_target ()->disable_tracepoint (loc); |
d777bf0d SM |
615 | } |
616 | ||
617 | void | |
618 | target_trace_start () | |
619 | { | |
328d42d8 | 620 | return current_inferior ()->top_target ()->trace_start (); |
d777bf0d SM |
621 | } |
622 | ||
623 | void | |
624 | target_trace_set_readonly_regions () | |
625 | { | |
328d42d8 | 626 | return current_inferior ()->top_target ()->trace_set_readonly_regions (); |
d777bf0d SM |
627 | } |
628 | ||
629 | int | |
630 | target_get_trace_status (trace_status *ts) | |
631 | { | |
328d42d8 | 632 | return current_inferior ()->top_target ()->get_trace_status (ts); |
d777bf0d SM |
633 | } |
634 | ||
635 | void | |
01bccc56 | 636 | target_get_tracepoint_status (tracepoint *tp, uploaded_tp *utp) |
d777bf0d | 637 | { |
328d42d8 | 638 | return current_inferior ()->top_target ()->get_tracepoint_status (tp, utp); |
d777bf0d SM |
639 | } |
640 | ||
641 | void | |
642 | target_trace_stop () | |
643 | { | |
328d42d8 | 644 | return current_inferior ()->top_target ()->trace_stop (); |
d777bf0d SM |
645 | } |
646 | ||
647 | int | |
648 | target_trace_find (trace_find_type type, int num, | |
649 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) | |
650 | { | |
328d42d8 SM |
651 | target_ops *target = current_inferior ()->top_target (); |
652 | ||
653 | return target->trace_find (type, num, addr1, addr2, tpp); | |
d777bf0d SM |
654 | } |
655 | ||
656 | bool | |
657 | target_get_trace_state_variable_value (int tsv, LONGEST *val) | |
658 | { | |
328d42d8 SM |
659 | target_ops *target = current_inferior ()->top_target (); |
660 | ||
661 | return target->get_trace_state_variable_value (tsv, val); | |
d777bf0d SM |
662 | } |
663 | ||
664 | int | |
665 | target_save_trace_data (const char *filename) | |
666 | { | |
328d42d8 | 667 | return current_inferior ()->top_target ()->save_trace_data (filename); |
d777bf0d SM |
668 | } |
669 | ||
670 | int | |
671 | target_upload_tracepoints (uploaded_tp **utpp) | |
672 | { | |
328d42d8 | 673 | return current_inferior ()->top_target ()->upload_tracepoints (utpp); |
d777bf0d SM |
674 | } |
675 | ||
676 | int | |
677 | target_upload_trace_state_variables (uploaded_tsv **utsvp) | |
678 | { | |
328d42d8 SM |
679 | target_ops *target = current_inferior ()->top_target (); |
680 | ||
681 | return target->upload_trace_state_variables (utsvp); | |
d777bf0d SM |
682 | } |
683 | ||
684 | LONGEST | |
685 | target_get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
686 | { | |
328d42d8 SM |
687 | target_ops *target = current_inferior ()->top_target (); |
688 | ||
689 | return target->get_raw_trace_data (buf, offset, len); | |
d777bf0d SM |
690 | } |
691 | ||
692 | int | |
693 | target_get_min_fast_tracepoint_insn_len () | |
694 | { | |
328d42d8 SM |
695 | target_ops *target = current_inferior ()->top_target (); |
696 | ||
697 | return target->get_min_fast_tracepoint_insn_len (); | |
d777bf0d SM |
698 | } |
699 | ||
700 | void | |
701 | target_set_disconnected_tracing (int val) | |
702 | { | |
328d42d8 | 703 | return current_inferior ()->top_target ()->set_disconnected_tracing (val); |
d777bf0d SM |
704 | } |
705 | ||
706 | void | |
707 | target_set_circular_trace_buffer (int val) | |
708 | { | |
328d42d8 | 709 | return current_inferior ()->top_target ()->set_circular_trace_buffer (val); |
d777bf0d SM |
710 | } |
711 | ||
712 | void | |
713 | target_set_trace_buffer_size (LONGEST val) | |
714 | { | |
328d42d8 | 715 | return current_inferior ()->top_target ()->set_trace_buffer_size (val); |
d777bf0d SM |
716 | } |
717 | ||
718 | bool | |
719 | target_set_trace_notes (const char *user, const char *notes, | |
720 | const char *stopnotes) | |
721 | { | |
328d42d8 SM |
722 | target_ops *target = current_inferior ()->top_target (); |
723 | ||
724 | return target->set_trace_notes (user, notes, stopnotes); | |
d777bf0d SM |
725 | } |
726 | ||
727 | bool | |
728 | target_get_tib_address (ptid_t ptid, CORE_ADDR *addr) | |
729 | { | |
328d42d8 | 730 | return current_inferior ()->top_target ()->get_tib_address (ptid, addr); |
d777bf0d SM |
731 | } |
732 | ||
733 | void | |
734 | target_set_permissions () | |
735 | { | |
328d42d8 | 736 | return current_inferior ()->top_target ()->set_permissions (); |
d777bf0d SM |
737 | } |
738 | ||
739 | bool | |
740 | target_static_tracepoint_marker_at (CORE_ADDR addr, | |
741 | static_tracepoint_marker *marker) | |
742 | { | |
328d42d8 SM |
743 | target_ops *target = current_inferior ()->top_target (); |
744 | ||
745 | return target->static_tracepoint_marker_at (addr, marker); | |
d777bf0d SM |
746 | } |
747 | ||
748 | std::vector<static_tracepoint_marker> | |
749 | target_static_tracepoint_markers_by_strid (const char *marker_id) | |
750 | { | |
328d42d8 SM |
751 | target_ops *target = current_inferior ()->top_target (); |
752 | ||
753 | return target->static_tracepoint_markers_by_strid (marker_id); | |
d777bf0d SM |
754 | } |
755 | ||
756 | traceframe_info_up | |
757 | target_traceframe_info () | |
758 | { | |
328d42d8 | 759 | return current_inferior ()->top_target ()->traceframe_info (); |
d777bf0d SM |
760 | } |
761 | ||
762 | bool | |
763 | target_use_agent (bool use) | |
764 | { | |
328d42d8 | 765 | return current_inferior ()->top_target ()->use_agent (use); |
d777bf0d SM |
766 | } |
767 | ||
768 | bool | |
769 | target_can_use_agent () | |
770 | { | |
328d42d8 | 771 | return current_inferior ()->top_target ()->can_use_agent (); |
d777bf0d SM |
772 | } |
773 | ||
774 | bool | |
775 | target_augmented_libraries_svr4_read () | |
776 | { | |
328d42d8 | 777 | return current_inferior ()->top_target ()->augmented_libraries_svr4_read (); |
d777bf0d SM |
778 | } |
779 | ||
780 | bool | |
781 | target_supports_memory_tagging () | |
782 | { | |
328d42d8 | 783 | return current_inferior ()->top_target ()->supports_memory_tagging (); |
d777bf0d SM |
784 | } |
785 | ||
786 | bool | |
787 | target_fetch_memtags (CORE_ADDR address, size_t len, gdb::byte_vector &tags, | |
788 | int type) | |
789 | { | |
328d42d8 | 790 | return current_inferior ()->top_target ()->fetch_memtags (address, len, tags, type); |
d777bf0d SM |
791 | } |
792 | ||
793 | bool | |
794 | target_store_memtags (CORE_ADDR address, size_t len, | |
795 | const gdb::byte_vector &tags, int type) | |
796 | { | |
328d42d8 | 797 | return current_inferior ()->top_target ()->store_memtags (address, len, tags, type); |
d777bf0d SM |
798 | } |
799 | ||
a388ab0b JB |
800 | x86_xsave_layout |
801 | target_fetch_x86_xsave_layout () | |
802 | { | |
803 | return current_inferior ()->top_target ()->fetch_x86_xsave_layout (); | |
804 | } | |
805 | ||
d777bf0d SM |
806 | void |
807 | target_log_command (const char *p) | |
808 | { | |
328d42d8 | 809 | return current_inferior ()->top_target ()->log_command (p); |
d777bf0d SM |
810 | } |
811 | ||
8981c758 TT |
812 | /* This is used to implement the various target commands. */ |
813 | ||
814 | static void | |
eb4c3f4a | 815 | open_target (const char *args, int from_tty, struct cmd_list_element *command) |
8981c758 | 816 | { |
0f8e2034 | 817 | auto *ti = static_cast<target_info *> (command->context ()); |
d9f719f1 | 818 | target_open_ftype *func = target_factories[ti]; |
8981c758 TT |
819 | |
820 | if (targetdebug) | |
6cb06a8c TT |
821 | gdb_printf (gdb_stdlog, "-> %s->open (...)\n", |
822 | ti->shortname); | |
8981c758 | 823 | |
d9f719f1 | 824 | func (args, from_tty); |
8981c758 TT |
825 | |
826 | if (targetdebug) | |
6cb06a8c TT |
827 | gdb_printf (gdb_stdlog, "<- %s->open (%s, %d)\n", |
828 | ti->shortname, args, from_tty); | |
8981c758 TT |
829 | } |
830 | ||
d9f719f1 | 831 | /* See target.h. */ |
c22a2b88 TT |
832 | |
833 | void | |
d9f719f1 PA |
834 | add_target (const target_info &t, target_open_ftype *func, |
835 | completer_ftype *completer) | |
c22a2b88 TT |
836 | { |
837 | struct cmd_list_element *c; | |
838 | ||
d9f719f1 PA |
839 | auto &func_slot = target_factories[&t]; |
840 | if (func_slot != nullptr) | |
f34652de | 841 | internal_error (_("target already added (\"%s\")."), t.shortname); |
d9f719f1 | 842 | func_slot = func; |
c906108c SS |
843 | |
844 | if (targetlist == NULL) | |
3b6acaee | 845 | add_basic_prefix_cmd ("target", class_run, _("\ |
1bedd215 | 846 | Connect to a target machine or process.\n\ |
c906108c SS |
847 | The first argument is the type or protocol of the target machine.\n\ |
848 | Remaining arguments are interpreted by the target protocol. For more\n\ | |
849 | information on the arguments for a particular protocol, type\n\ | |
1bedd215 | 850 | `help target ' followed by the protocol name."), |
2f822da5 | 851 | &targetlist, 0, &cmdlist); |
d9f719f1 | 852 | c = add_cmd (t.shortname, no_class, t.doc, &targetlist); |
0f8e2034 | 853 | c->set_context ((void *) &t); |
5538b03c | 854 | c->func = open_target; |
9852c492 YQ |
855 | if (completer != NULL) |
856 | set_cmd_completer (c, completer); | |
857 | } | |
858 | ||
b48d48eb MM |
859 | /* See target.h. */ |
860 | ||
861 | void | |
d9f719f1 | 862 | add_deprecated_target_alias (const target_info &tinfo, const char *alias) |
b48d48eb MM |
863 | { |
864 | struct cmd_list_element *c; | |
b48d48eb MM |
865 | |
866 | /* If we use add_alias_cmd, here, we do not get the deprecated warning, | |
867 | see PR cli/15104. */ | |
d9f719f1 | 868 | c = add_cmd (alias, no_class, tinfo.doc, &targetlist); |
5538b03c | 869 | c->func = open_target; |
0f8e2034 | 870 | c->set_context ((void *) &tinfo); |
8579fd13 AB |
871 | gdb::unique_xmalloc_ptr<char> alt |
872 | = xstrprintf ("target %s", tinfo.shortname); | |
873 | deprecate_cmd (c, alt.release ()); | |
b48d48eb MM |
874 | } |
875 | ||
c906108c SS |
876 | /* Stub functions */ |
877 | ||
7d85a9c0 JB |
878 | void |
879 | target_kill (void) | |
880 | { | |
ed14d866 SM |
881 | |
882 | /* If the commit_resume_state of the to-be-killed-inferior's process stratum | |
883 | is true, and this inferior is the last live inferior with resumed threads | |
884 | of that target, then we want to leave commit_resume_state to false, as the | |
885 | target won't have any resumed threads anymore. We achieve this with | |
886 | this scoped_disable_commit_resumed. On construction, it will set the flag | |
887 | to false. On destruction, it will only set it to true if there are resumed | |
888 | threads left. */ | |
889 | scoped_disable_commit_resumed disable ("killing"); | |
328d42d8 | 890 | current_inferior ()->top_target ()->kill (); |
7d85a9c0 JB |
891 | } |
892 | ||
11cf8741 | 893 | void |
9cbe5fff | 894 | target_load (const char *arg, int from_tty) |
11cf8741 | 895 | { |
41336620 | 896 | target_dcache_invalidate (current_program_space->aspace); |
328d42d8 | 897 | current_inferior ()->top_target ()->load (arg, from_tty); |
11cf8741 JM |
898 | } |
899 | ||
223ffa71 | 900 | /* Define it. */ |
5842f62a | 901 | |
e671cd59 PA |
902 | target_terminal_state target_terminal::m_terminal_state |
903 | = target_terminal_state::is_ours; | |
5842f62a | 904 | |
223ffa71 | 905 | /* See target/target.h. */ |
5842f62a PA |
906 | |
907 | void | |
223ffa71 | 908 | target_terminal::init (void) |
5842f62a | 909 | { |
328d42d8 | 910 | current_inferior ()->top_target ()->terminal_init (); |
5842f62a | 911 | |
e671cd59 | 912 | m_terminal_state = target_terminal_state::is_ours; |
5842f62a PA |
913 | } |
914 | ||
223ffa71 | 915 | /* See target/target.h. */ |
2f99e8fc | 916 | |
d9d2d8b6 | 917 | void |
223ffa71 | 918 | target_terminal::inferior (void) |
d9d2d8b6 | 919 | { |
41fd2b0f PA |
920 | struct ui *ui = current_ui; |
921 | ||
d9d2d8b6 | 922 | /* A background resume (``run&'') should leave GDB in control of the |
3b12939d PA |
923 | terminal. */ |
924 | if (ui->prompt_state != PROMPT_BLOCKED) | |
d9d2d8b6 PA |
925 | return; |
926 | ||
215d3118 PA |
927 | /* Since we always run the inferior in the main console (unless "set |
928 | inferior-tty" is in effect), when some UI other than the main one | |
223ffa71 TT |
929 | calls target_terminal::inferior, then we leave the main UI's |
930 | terminal settings as is. */ | |
215d3118 PA |
931 | if (ui != main_ui) |
932 | return; | |
933 | ||
d9d2d8b6 PA |
934 | /* If GDB is resuming the inferior in the foreground, install |
935 | inferior's terminal modes. */ | |
e671cd59 PA |
936 | |
937 | struct inferior *inf = current_inferior (); | |
938 | ||
939 | if (inf->terminal_state != target_terminal_state::is_inferior) | |
940 | { | |
328d42d8 | 941 | current_inferior ()->top_target ()->terminal_inferior (); |
e671cd59 PA |
942 | inf->terminal_state = target_terminal_state::is_inferior; |
943 | } | |
944 | ||
945 | m_terminal_state = target_terminal_state::is_inferior; | |
946 | ||
947 | /* If the user hit C-c before, pretend that it was hit right | |
948 | here. */ | |
949 | if (check_quit_flag ()) | |
950 | target_pass_ctrlc (); | |
951 | } | |
952 | ||
953 | /* See target/target.h. */ | |
954 | ||
955 | void | |
956 | target_terminal::restore_inferior (void) | |
957 | { | |
958 | struct ui *ui = current_ui; | |
959 | ||
960 | /* See target_terminal::inferior(). */ | |
961 | if (ui->prompt_state != PROMPT_BLOCKED || ui != main_ui) | |
962 | return; | |
963 | ||
964 | /* Restore the terminal settings of inferiors that were in the | |
965 | foreground but are now ours_for_output due to a temporary | |
966 | target_target::ours_for_output() call. */ | |
967 | ||
968 | { | |
969 | scoped_restore_current_inferior restore_inferior; | |
e671cd59 | 970 | |
84b68c77 | 971 | for (::inferior *inf : all_inferiors ()) |
e671cd59 PA |
972 | { |
973 | if (inf->terminal_state == target_terminal_state::is_ours_for_output) | |
974 | { | |
975 | set_current_inferior (inf); | |
328d42d8 | 976 | current_inferior ()->top_target ()->terminal_inferior (); |
e671cd59 PA |
977 | inf->terminal_state = target_terminal_state::is_inferior; |
978 | } | |
979 | } | |
980 | } | |
981 | ||
982 | m_terminal_state = target_terminal_state::is_inferior; | |
93692b58 PA |
983 | |
984 | /* If the user hit C-c before, pretend that it was hit right | |
985 | here. */ | |
986 | if (check_quit_flag ()) | |
987 | target_pass_ctrlc (); | |
5842f62a PA |
988 | } |
989 | ||
e671cd59 PA |
990 | /* Switch terminal state to DESIRED_STATE, either is_ours, or |
991 | is_ours_for_output. */ | |
992 | ||
993 | static void | |
994 | target_terminal_is_ours_kind (target_terminal_state desired_state) | |
995 | { | |
996 | scoped_restore_current_inferior restore_inferior; | |
e671cd59 PA |
997 | |
998 | /* Must do this in two passes. First, have all inferiors save the | |
999 | current terminal settings. Then, after all inferiors have add a | |
1000 | chance to safely save the terminal settings, restore GDB's | |
1001 | terminal settings. */ | |
1002 | ||
08036331 | 1003 | for (inferior *inf : all_inferiors ()) |
e671cd59 PA |
1004 | { |
1005 | if (inf->terminal_state == target_terminal_state::is_inferior) | |
1006 | { | |
1007 | set_current_inferior (inf); | |
328d42d8 | 1008 | current_inferior ()->top_target ()->terminal_save_inferior (); |
e671cd59 PA |
1009 | } |
1010 | } | |
1011 | ||
08036331 | 1012 | for (inferior *inf : all_inferiors ()) |
e671cd59 PA |
1013 | { |
1014 | /* Note we don't check is_inferior here like above because we | |
1015 | need to handle 'is_ours_for_output -> is_ours' too. Careful | |
1016 | to never transition from 'is_ours' to 'is_ours_for_output', | |
1017 | though. */ | |
1018 | if (inf->terminal_state != target_terminal_state::is_ours | |
1019 | && inf->terminal_state != desired_state) | |
1020 | { | |
1021 | set_current_inferior (inf); | |
1022 | if (desired_state == target_terminal_state::is_ours) | |
328d42d8 | 1023 | current_inferior ()->top_target ()->terminal_ours (); |
e671cd59 | 1024 | else if (desired_state == target_terminal_state::is_ours_for_output) |
328d42d8 | 1025 | current_inferior ()->top_target ()->terminal_ours_for_output (); |
e671cd59 PA |
1026 | else |
1027 | gdb_assert_not_reached ("unhandled desired state"); | |
1028 | inf->terminal_state = desired_state; | |
1029 | } | |
1030 | } | |
1031 | } | |
1032 | ||
223ffa71 | 1033 | /* See target/target.h. */ |
5842f62a PA |
1034 | |
1035 | void | |
223ffa71 | 1036 | target_terminal::ours () |
5842f62a | 1037 | { |
41fd2b0f PA |
1038 | struct ui *ui = current_ui; |
1039 | ||
223ffa71 | 1040 | /* See target_terminal::inferior. */ |
215d3118 PA |
1041 | if (ui != main_ui) |
1042 | return; | |
1043 | ||
e671cd59 | 1044 | if (m_terminal_state == target_terminal_state::is_ours) |
5842f62a PA |
1045 | return; |
1046 | ||
e671cd59 PA |
1047 | target_terminal_is_ours_kind (target_terminal_state::is_ours); |
1048 | m_terminal_state = target_terminal_state::is_ours; | |
5842f62a PA |
1049 | } |
1050 | ||
223ffa71 | 1051 | /* See target/target.h. */ |
5842f62a PA |
1052 | |
1053 | void | |
223ffa71 | 1054 | target_terminal::ours_for_output () |
5842f62a | 1055 | { |
215d3118 PA |
1056 | struct ui *ui = current_ui; |
1057 | ||
223ffa71 | 1058 | /* See target_terminal::inferior. */ |
215d3118 PA |
1059 | if (ui != main_ui) |
1060 | return; | |
1061 | ||
e671cd59 | 1062 | if (!target_terminal::is_inferior ()) |
5842f62a | 1063 | return; |
e671cd59 PA |
1064 | |
1065 | target_terminal_is_ours_kind (target_terminal_state::is_ours_for_output); | |
1066 | target_terminal::m_terminal_state = target_terminal_state::is_ours_for_output; | |
d9d2d8b6 | 1067 | } |
136d6dae | 1068 | |
223ffa71 TT |
1069 | /* See target/target.h. */ |
1070 | ||
1071 | void | |
1072 | target_terminal::info (const char *arg, int from_tty) | |
1073 | { | |
328d42d8 | 1074 | current_inferior ()->top_target ()->terminal_info (arg, from_tty); |
223ffa71 TT |
1075 | } |
1076 | ||
b0ed115f TT |
1077 | /* See target.h. */ |
1078 | ||
20f0d60d | 1079 | bool |
b0ed115f TT |
1080 | target_supports_terminal_ours (void) |
1081 | { | |
5b6d1e4f PA |
1082 | /* The current top target is the target at the top of the target |
1083 | stack of the current inferior. While normally there's always an | |
1084 | inferior, we must check for nullptr here because we can get here | |
1085 | very early during startup, before the initial inferior is first | |
1086 | created. */ | |
1087 | inferior *inf = current_inferior (); | |
20f0d60d | 1088 | |
5b6d1e4f | 1089 | if (inf == nullptr) |
20f0d60d | 1090 | return false; |
5b6d1e4f | 1091 | return inf->top_target ()->supports_terminal_ours (); |
b0ed115f TT |
1092 | } |
1093 | ||
c906108c | 1094 | static void |
fba45db2 | 1095 | tcomplain (void) |
c906108c | 1096 | { |
8a3fe4f8 | 1097 | error (_("You can't do that when your target is `%s'"), |
328d42d8 | 1098 | current_inferior ()->top_target ()->shortname ()); |
c906108c SS |
1099 | } |
1100 | ||
1101 | void | |
fba45db2 | 1102 | noprocess (void) |
c906108c | 1103 | { |
8a3fe4f8 | 1104 | error (_("You can't do that without a process to debug.")); |
c906108c SS |
1105 | } |
1106 | ||
c906108c | 1107 | static void |
0a4f40a2 | 1108 | default_terminal_info (struct target_ops *self, const char *args, int from_tty) |
c906108c | 1109 | { |
6cb06a8c | 1110 | gdb_printf (_("No saved terminal information.\n")); |
c906108c SS |
1111 | } |
1112 | ||
0ef643c8 JB |
1113 | /* A default implementation for the to_get_ada_task_ptid target method. |
1114 | ||
1115 | This function builds the PTID by using both LWP and TID as part of | |
1116 | the PTID lwp and tid elements. The pid used is the pid of the | |
1117 | inferior_ptid. */ | |
1118 | ||
2c0b251b | 1119 | static ptid_t |
c80e29db | 1120 | default_get_ada_task_ptid (struct target_ops *self, long lwp, ULONGEST tid) |
0ef643c8 | 1121 | { |
e99b03dc | 1122 | return ptid_t (inferior_ptid.pid (), lwp, tid); |
0ef643c8 JB |
1123 | } |
1124 | ||
32231432 | 1125 | static enum exec_direction_kind |
4c612759 | 1126 | default_execution_direction (struct target_ops *self) |
32231432 | 1127 | { |
05374cfd | 1128 | if (!target_can_execute_reverse ()) |
32231432 PA |
1129 | return EXEC_FORWARD; |
1130 | else if (!target_can_async_p ()) | |
1131 | return EXEC_FORWARD; | |
1132 | else | |
1133 | gdb_assert_not_reached ("\ | |
1134 | to_execution_direction must be implemented for reverse async"); | |
1135 | } | |
1136 | ||
a1740ee1 | 1137 | /* See target.h. */ |
c906108c | 1138 | |
5b6d1e4f | 1139 | void |
9678f8fe | 1140 | target_ops_ref_policy::decref (target_ops *t) |
5b6d1e4f PA |
1141 | { |
1142 | t->decref (); | |
1143 | if (t->refcount () == 0) | |
121b3efd PA |
1144 | { |
1145 | if (t->stratum () == process_stratum) | |
1146 | connection_list_remove (as_process_stratum_target (t)); | |
57685738 TT |
1147 | |
1148 | for (inferior *inf : all_inferiors ()) | |
1149 | gdb_assert (!inf->target_is_pushed (t)); | |
1150 | ||
1151 | fileio_handles_invalidate_target (t); | |
1152 | ||
1153 | t->close (); | |
1154 | ||
1155 | if (targetdebug) | |
1156 | gdb_printf (gdb_stdlog, "closing target\n"); | |
121b3efd | 1157 | } |
5b6d1e4f PA |
1158 | } |
1159 | ||
1160 | /* See target.h. */ | |
1161 | ||
b26a4dcb | 1162 | void |
a1740ee1 | 1163 | target_stack::push (target_ops *t) |
c906108c | 1164 | { |
91e3d1d1 AB |
1165 | /* We must create a new reference first. It is possible that T is |
1166 | already pushed on this target stack, in which case we will first | |
1167 | unpush it below, before re-pushing it. If we don't increment the | |
1168 | reference count now, then when we unpush it, we might end up deleting | |
1169 | T, which is not good. */ | |
1170 | auto ref = target_ops_ref::new_reference (t); | |
5b6d1e4f | 1171 | |
66b4deae PA |
1172 | strata stratum = t->stratum (); |
1173 | ||
5b6d1e4f PA |
1174 | /* If there's already a target at this stratum, remove it. */ |
1175 | ||
91e3d1d1 AB |
1176 | if (m_stack[stratum].get () != nullptr) |
1177 | unpush (m_stack[stratum].get ()); | |
c906108c | 1178 | |
a1740ee1 | 1179 | /* Now add the new one. */ |
91e3d1d1 | 1180 | m_stack[stratum] = std::move (ref); |
5d502164 | 1181 | |
66b4deae PA |
1182 | if (m_top < stratum) |
1183 | m_top = stratum; | |
91e3d1d1 AB |
1184 | |
1185 | if (stratum == process_stratum) | |
1186 | connection_list_add (as_process_stratum_target (t)); | |
a1740ee1 PA |
1187 | } |
1188 | ||
1189 | /* See target.h. */ | |
c906108c | 1190 | |
a1740ee1 PA |
1191 | bool |
1192 | target_stack::unpush (target_ops *t) | |
c906108c | 1193 | { |
1688cb29 TT |
1194 | gdb_assert (t != NULL); |
1195 | ||
66b4deae PA |
1196 | strata stratum = t->stratum (); |
1197 | ||
1198 | if (stratum == dummy_stratum) | |
f34652de | 1199 | internal_error (_("Attempt to unpush the dummy target")); |
c8d104ad | 1200 | |
a1740ee1 PA |
1201 | /* Look for the specified target. Note that a target can only occur |
1202 | once in the target stack. */ | |
c906108c | 1203 | |
66b4deae | 1204 | if (m_stack[stratum] != t) |
258b763a | 1205 | { |
a1740ee1 PA |
1206 | /* If T wasn't pushed, quit. Only open targets should be |
1207 | closed. */ | |
1208 | return false; | |
258b763a | 1209 | } |
c906108c | 1210 | |
66b4deae | 1211 | if (m_top == stratum) |
bedc4734 | 1212 | m_top = this->find_beneath (t)->stratum (); |
c906108c | 1213 | |
91e3d1d1 AB |
1214 | /* Move the target reference off the target stack, this sets the pointer |
1215 | held in m_stack to nullptr, and places the reference in ref. When | |
1216 | ref goes out of scope its reference count will be decremented, which | |
1217 | might cause the target to close. | |
1218 | ||
1219 | We have to do it this way, and not just set the value in m_stack to | |
1220 | nullptr directly, because doing so would decrement the reference | |
1221 | count first, which might close the target, and closing the target | |
1222 | does a check that the target is not on any inferiors target_stack. */ | |
1223 | auto ref = std::move (m_stack[stratum]); | |
305436e0 | 1224 | |
a1740ee1 | 1225 | return true; |
c906108c SS |
1226 | } |
1227 | ||
fadf6add SM |
1228 | void |
1229 | target_unpusher::operator() (struct target_ops *ops) const | |
1230 | { | |
1231 | current_inferior ()->unpush_target (ops); | |
1232 | } | |
1233 | ||
f0f9ff95 TT |
1234 | /* Default implementation of to_get_thread_local_address. */ |
1235 | ||
1236 | static void | |
1237 | generic_tls_error (void) | |
1238 | { | |
1239 | throw_error (TLS_GENERIC_ERROR, | |
1240 | _("Cannot find thread-local variables on this target")); | |
1241 | } | |
1242 | ||
72f5cf0e | 1243 | /* Using the objfile specified in OBJFILE, find the address for the |
9e35dae4 DJ |
1244 | current thread's thread-local storage with offset OFFSET. */ |
1245 | CORE_ADDR | |
1246 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) | |
1247 | { | |
1248 | volatile CORE_ADDR addr = 0; | |
328d42d8 | 1249 | struct target_ops *target = current_inferior ()->top_target (); |
99d9c3b9 | 1250 | gdbarch *gdbarch = current_inferior ()->arch (); |
9e35dae4 | 1251 | |
4cc98c36 JB |
1252 | /* If OBJFILE is a separate debug object file, look for the |
1253 | original object file. */ | |
1254 | if (objfile->separate_debug_objfile_backlink != NULL) | |
1255 | objfile = objfile->separate_debug_objfile_backlink; | |
1256 | ||
6e056c81 | 1257 | if (gdbarch_fetch_tls_load_module_address_p (gdbarch)) |
9e35dae4 DJ |
1258 | { |
1259 | ptid_t ptid = inferior_ptid; | |
9e35dae4 | 1260 | |
a70b8144 | 1261 | try |
9e35dae4 DJ |
1262 | { |
1263 | CORE_ADDR lm_addr; | |
1264 | ||
1265 | /* Fetch the load module address for this objfile. */ | |
6e056c81 | 1266 | lm_addr = gdbarch_fetch_tls_load_module_address (gdbarch, |
dda83cd7 | 1267 | objfile); |
9e35dae4 | 1268 | |
6e056c81 JB |
1269 | if (gdbarch_get_thread_local_address_p (gdbarch)) |
1270 | addr = gdbarch_get_thread_local_address (gdbarch, ptid, lm_addr, | |
1271 | offset); | |
1272 | else | |
1273 | addr = target->get_thread_local_address (ptid, lm_addr, offset); | |
9e35dae4 DJ |
1274 | } |
1275 | /* If an error occurred, print TLS related messages here. Otherwise, | |
dda83cd7 | 1276 | throw the error to some higher catcher. */ |
230d2906 | 1277 | catch (const gdb_exception &ex) |
9e35dae4 DJ |
1278 | { |
1279 | int objfile_is_library = (objfile->flags & OBJF_SHARED); | |
1280 | ||
1281 | switch (ex.error) | |
1282 | { | |
1283 | case TLS_NO_LIBRARY_SUPPORT_ERROR: | |
3e43a32a MS |
1284 | error (_("Cannot find thread-local variables " |
1285 | "in this thread library.")); | |
9e35dae4 DJ |
1286 | break; |
1287 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: | |
1288 | if (objfile_is_library) | |
1289 | error (_("Cannot find shared library `%s' in dynamic" | |
dda83cd7 | 1290 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
1291 | else |
1292 | error (_("Cannot find executable file `%s' in dynamic" | |
dda83cd7 | 1293 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
1294 | break; |
1295 | case TLS_NOT_ALLOCATED_YET_ERROR: | |
1296 | if (objfile_is_library) | |
1297 | error (_("The inferior has not yet allocated storage for" | |
dda83cd7 SM |
1298 | " thread-local variables in\n" |
1299 | "the shared library `%s'\n" | |
1300 | "for %s"), | |
a068643d TT |
1301 | objfile_name (objfile), |
1302 | target_pid_to_str (ptid).c_str ()); | |
9e35dae4 DJ |
1303 | else |
1304 | error (_("The inferior has not yet allocated storage for" | |
dda83cd7 SM |
1305 | " thread-local variables in\n" |
1306 | "the executable `%s'\n" | |
1307 | "for %s"), | |
a068643d TT |
1308 | objfile_name (objfile), |
1309 | target_pid_to_str (ptid).c_str ()); | |
9e35dae4 DJ |
1310 | break; |
1311 | case TLS_GENERIC_ERROR: | |
1312 | if (objfile_is_library) | |
1313 | error (_("Cannot find thread-local storage for %s, " | |
dda83cd7 | 1314 | "shared library %s:\n%s"), |
a068643d | 1315 | target_pid_to_str (ptid).c_str (), |
3d6e9d23 | 1316 | objfile_name (objfile), ex.what ()); |
9e35dae4 DJ |
1317 | else |
1318 | error (_("Cannot find thread-local storage for %s, " | |
dda83cd7 | 1319 | "executable file %s:\n%s"), |
a068643d | 1320 | target_pid_to_str (ptid).c_str (), |
3d6e9d23 | 1321 | objfile_name (objfile), ex.what ()); |
9e35dae4 DJ |
1322 | break; |
1323 | default: | |
eedc3f4f | 1324 | throw; |
9e35dae4 DJ |
1325 | break; |
1326 | } | |
1327 | } | |
1328 | } | |
9e35dae4 DJ |
1329 | else |
1330 | error (_("Cannot find thread-local variables on this target")); | |
1331 | ||
1332 | return addr; | |
1333 | } | |
1334 | ||
6be7b56e | 1335 | const char * |
01cb8804 | 1336 | target_xfer_status_to_string (enum target_xfer_status status) |
6be7b56e PA |
1337 | { |
1338 | #define CASE(X) case X: return #X | |
01cb8804 | 1339 | switch (status) |
6be7b56e PA |
1340 | { |
1341 | CASE(TARGET_XFER_E_IO); | |
bc113b4e | 1342 | CASE(TARGET_XFER_UNAVAILABLE); |
6be7b56e PA |
1343 | default: |
1344 | return "<unknown>"; | |
1345 | } | |
1346 | #undef CASE | |
1347 | }; | |
1348 | ||
1349 | ||
25b5a04e | 1350 | const std::vector<target_section> * |
07b82ea5 PA |
1351 | target_get_section_table (struct target_ops *target) |
1352 | { | |
f6ac5f3d | 1353 | return target->get_section_table (); |
07b82ea5 PA |
1354 | } |
1355 | ||
8db32d44 | 1356 | /* Find a section containing ADDR. */ |
07b82ea5 | 1357 | |
19cf757a | 1358 | const struct target_section * |
8db32d44 AC |
1359 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
1360 | { | |
25b5a04e | 1361 | const std::vector<target_section> *table = target_get_section_table (target); |
07b82ea5 PA |
1362 | |
1363 | if (table == NULL) | |
1364 | return NULL; | |
1365 | ||
19cf757a | 1366 | for (const target_section &secp : *table) |
8db32d44 | 1367 | { |
bb2a6777 TT |
1368 | if (addr >= secp.addr && addr < secp.endaddr) |
1369 | return &secp; | |
8db32d44 AC |
1370 | } |
1371 | return NULL; | |
1372 | } | |
1373 | ||
336aa7b7 AB |
1374 | /* See target.h. */ |
1375 | ||
25b5a04e | 1376 | const std::vector<target_section> * |
336aa7b7 AB |
1377 | default_get_section_table () |
1378 | { | |
1379 | return ¤t_program_space->target_sections (); | |
1380 | } | |
0fec99e8 PA |
1381 | |
1382 | /* Helper for the memory xfer routines. Checks the attributes of the | |
1383 | memory region of MEMADDR against the read or write being attempted. | |
1384 | If the access is permitted returns true, otherwise returns false. | |
1385 | REGION_P is an optional output parameter. If not-NULL, it is | |
1386 | filled with a pointer to the memory region of MEMADDR. REG_LEN | |
1387 | returns LEN trimmed to the end of the region. This is how much the | |
1388 | caller can continue requesting, if the access is permitted. A | |
1389 | single xfer request must not straddle memory region boundaries. */ | |
1390 | ||
1391 | static int | |
1392 | memory_xfer_check_region (gdb_byte *readbuf, const gdb_byte *writebuf, | |
1393 | ULONGEST memaddr, ULONGEST len, ULONGEST *reg_len, | |
1394 | struct mem_region **region_p) | |
1395 | { | |
1396 | struct mem_region *region; | |
1397 | ||
1398 | region = lookup_mem_region (memaddr); | |
1399 | ||
1400 | if (region_p != NULL) | |
1401 | *region_p = region; | |
1402 | ||
1403 | switch (region->attrib.mode) | |
1404 | { | |
1405 | case MEM_RO: | |
1406 | if (writebuf != NULL) | |
1407 | return 0; | |
1408 | break; | |
1409 | ||
1410 | case MEM_WO: | |
1411 | if (readbuf != NULL) | |
1412 | return 0; | |
1413 | break; | |
1414 | ||
1415 | case MEM_FLASH: | |
1416 | /* We only support writing to flash during "load" for now. */ | |
1417 | if (writebuf != NULL) | |
1418 | error (_("Writing to flash memory forbidden in this context")); | |
1419 | break; | |
1420 | ||
1421 | case MEM_NONE: | |
1422 | return 0; | |
1423 | } | |
1424 | ||
1425 | /* region->hi == 0 means there's no upper bound. */ | |
1426 | if (memaddr + len < region->hi || region->hi == 0) | |
1427 | *reg_len = len; | |
1428 | else | |
1429 | *reg_len = region->hi - memaddr; | |
1430 | ||
1431 | return 1; | |
1432 | } | |
1433 | ||
9f713294 YQ |
1434 | /* Read memory from more than one valid target. A core file, for |
1435 | instance, could have some of memory but delegate other bits to | |
1436 | the target below it. So, we must manually try all targets. */ | |
1437 | ||
cc9f16aa | 1438 | enum target_xfer_status |
17fde6d0 | 1439 | raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf, |
9b409511 YQ |
1440 | const gdb_byte *writebuf, ULONGEST memaddr, LONGEST len, |
1441 | ULONGEST *xfered_len) | |
9f713294 | 1442 | { |
9b409511 | 1443 | enum target_xfer_status res; |
9f713294 YQ |
1444 | |
1445 | do | |
1446 | { | |
f6ac5f3d PA |
1447 | res = ops->xfer_partial (TARGET_OBJECT_MEMORY, NULL, |
1448 | readbuf, writebuf, memaddr, len, | |
1449 | xfered_len); | |
9b409511 | 1450 | if (res == TARGET_XFER_OK) |
9f713294 YQ |
1451 | break; |
1452 | ||
633785ff | 1453 | /* Stop if the target reports that the memory is not available. */ |
bc113b4e | 1454 | if (res == TARGET_XFER_UNAVAILABLE) |
633785ff MM |
1455 | break; |
1456 | ||
2735d421 | 1457 | /* Don't continue past targets which have all the memory. |
dda83cd7 | 1458 | At one time, this code was necessary to read data from |
2735d421 KB |
1459 | executables / shared libraries when data for the requested |
1460 | addresses weren't available in the core file. But now the | |
1461 | core target handles this case itself. */ | |
f6ac5f3d | 1462 | if (ops->has_all_memory ()) |
9f713294 YQ |
1463 | break; |
1464 | ||
b6a8c27b | 1465 | ops = ops->beneath (); |
9f713294 YQ |
1466 | } |
1467 | while (ops != NULL); | |
1468 | ||
0f26cec1 PA |
1469 | /* The cache works at the raw memory level. Make sure the cache |
1470 | gets updated with raw contents no matter what kind of memory | |
1471 | object was originally being written. Note we do write-through | |
1472 | first, so that if it fails, we don't write to the cache contents | |
1473 | that never made it to the target. */ | |
1474 | if (writebuf != NULL | |
d7e15655 | 1475 | && inferior_ptid != null_ptid |
41336620 | 1476 | && target_dcache_init_p (current_program_space->aspace) |
0f26cec1 PA |
1477 | && (stack_cache_enabled_p () || code_cache_enabled_p ())) |
1478 | { | |
41336620 | 1479 | DCACHE *dcache = target_dcache_get (current_program_space->aspace); |
0f26cec1 PA |
1480 | |
1481 | /* Note that writing to an area of memory which wasn't present | |
1482 | in the cache doesn't cause it to be loaded in. */ | |
1483 | dcache_update (dcache, res, memaddr, writebuf, *xfered_len); | |
1484 | } | |
1485 | ||
9f713294 YQ |
1486 | return res; |
1487 | } | |
1488 | ||
7f79c47e DE |
1489 | /* Perform a partial memory transfer. |
1490 | For docs see target.h, to_xfer_partial. */ | |
cf7a04e8 | 1491 | |
9b409511 | 1492 | static enum target_xfer_status |
f0ba3972 | 1493 | memory_xfer_partial_1 (struct target_ops *ops, enum target_object object, |
17fde6d0 | 1494 | gdb_byte *readbuf, const gdb_byte *writebuf, ULONGEST memaddr, |
9b409511 | 1495 | ULONGEST len, ULONGEST *xfered_len) |
0779438d | 1496 | { |
9b409511 | 1497 | enum target_xfer_status res; |
0fec99e8 | 1498 | ULONGEST reg_len; |
cf7a04e8 | 1499 | struct mem_region *region; |
4e5d721f | 1500 | struct inferior *inf; |
cf7a04e8 | 1501 | |
07b82ea5 PA |
1502 | /* For accesses to unmapped overlay sections, read directly from |
1503 | files. Must do this first, as MEMADDR may need adjustment. */ | |
1504 | if (readbuf != NULL && overlay_debugging) | |
1505 | { | |
1506 | struct obj_section *section = find_pc_overlay (memaddr); | |
5d502164 | 1507 | |
07b82ea5 PA |
1508 | if (pc_in_unmapped_range (memaddr, section)) |
1509 | { | |
25b5a04e | 1510 | const std::vector<target_section> *table = target_get_section_table (ops); |
07b82ea5 | 1511 | const char *section_name = section->the_bfd_section->name; |
5d502164 | 1512 | |
07b82ea5 | 1513 | memaddr = overlay_mapped_address (memaddr, section); |
e56cb451 KB |
1514 | |
1515 | auto match_cb = [=] (const struct target_section *s) | |
1516 | { | |
1517 | return (strcmp (section_name, s->the_bfd_section->name) == 0); | |
1518 | }; | |
1519 | ||
07b82ea5 | 1520 | return section_table_xfer_memory_partial (readbuf, writebuf, |
9b409511 | 1521 | memaddr, len, xfered_len, |
bb2a6777 | 1522 | *table, match_cb); |
07b82ea5 PA |
1523 | } |
1524 | } | |
1525 | ||
1526 | /* Try the executable files, if "trust-readonly-sections" is set. */ | |
cf7a04e8 DJ |
1527 | if (readbuf != NULL && trust_readonly) |
1528 | { | |
19cf757a AB |
1529 | const struct target_section *secp |
1530 | = target_section_by_addr (ops, memaddr); | |
cf7a04e8 | 1531 | if (secp != NULL |
fd361982 | 1532 | && (bfd_section_flags (secp->the_bfd_section) & SEC_READONLY)) |
07b82ea5 | 1533 | { |
25b5a04e | 1534 | const std::vector<target_section> *table = target_get_section_table (ops); |
07b82ea5 | 1535 | return section_table_xfer_memory_partial (readbuf, writebuf, |
9b409511 | 1536 | memaddr, len, xfered_len, |
bb2a6777 | 1537 | *table); |
07b82ea5 | 1538 | } |
98646950 UW |
1539 | } |
1540 | ||
cf7a04e8 | 1541 | /* Try GDB's internal data cache. */ |
cf7a04e8 | 1542 | |
0fec99e8 PA |
1543 | if (!memory_xfer_check_region (readbuf, writebuf, memaddr, len, ®_len, |
1544 | ®ion)) | |
1545 | return TARGET_XFER_E_IO; | |
cf7a04e8 | 1546 | |
d7e15655 | 1547 | if (inferior_ptid != null_ptid) |
00431a78 | 1548 | inf = current_inferior (); |
6c95b8df PA |
1549 | else |
1550 | inf = NULL; | |
4e5d721f DE |
1551 | |
1552 | if (inf != NULL | |
0f26cec1 | 1553 | && readbuf != NULL |
2f4d8875 PA |
1554 | /* The dcache reads whole cache lines; that doesn't play well |
1555 | with reading from a trace buffer, because reading outside of | |
1556 | the collected memory range fails. */ | |
1557 | && get_traceframe_number () == -1 | |
4e5d721f | 1558 | && (region->attrib.cache |
29453a14 YQ |
1559 | || (stack_cache_enabled_p () && object == TARGET_OBJECT_STACK_MEMORY) |
1560 | || (code_cache_enabled_p () && object == TARGET_OBJECT_CODE_MEMORY))) | |
cf7a04e8 | 1561 | { |
41336620 SM |
1562 | DCACHE *dcache |
1563 | = target_dcache_get_or_init (current_program_space->aspace); | |
2a2f9fe4 | 1564 | |
0f26cec1 PA |
1565 | return dcache_read_memory_partial (ops, dcache, memaddr, readbuf, |
1566 | reg_len, xfered_len); | |
cf7a04e8 DJ |
1567 | } |
1568 | ||
1569 | /* If none of those methods found the memory we wanted, fall back | |
1570 | to a target partial transfer. Normally a single call to | |
1571 | to_xfer_partial is enough; if it doesn't recognize an object | |
1572 | it will call the to_xfer_partial of the next target down. | |
1573 | But for memory this won't do. Memory is the only target | |
9b409511 YQ |
1574 | object which can be read from more than one valid target. |
1575 | A core file, for instance, could have some of memory but | |
1576 | delegate other bits to the target below it. So, we must | |
1577 | manually try all targets. */ | |
1578 | ||
1579 | res = raw_memory_xfer_partial (ops, readbuf, writebuf, memaddr, reg_len, | |
1580 | xfered_len); | |
cf7a04e8 DJ |
1581 | |
1582 | /* If we still haven't got anything, return the last error. We | |
1583 | give up. */ | |
1584 | return res; | |
0779438d AC |
1585 | } |
1586 | ||
f0ba3972 PA |
1587 | /* Perform a partial memory transfer. For docs see target.h, |
1588 | to_xfer_partial. */ | |
1589 | ||
9b409511 | 1590 | static enum target_xfer_status |
f0ba3972 | 1591 | memory_xfer_partial (struct target_ops *ops, enum target_object object, |
9b409511 YQ |
1592 | gdb_byte *readbuf, const gdb_byte *writebuf, |
1593 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) | |
f0ba3972 | 1594 | { |
9b409511 | 1595 | enum target_xfer_status res; |
f0ba3972 PA |
1596 | |
1597 | /* Zero length requests are ok and require no work. */ | |
1598 | if (len == 0) | |
9b409511 | 1599 | return TARGET_XFER_EOF; |
f0ba3972 | 1600 | |
99d9c3b9 SM |
1601 | memaddr = gdbarch_remove_non_address_bits (current_inferior ()->arch (), |
1602 | memaddr); | |
a738ea1d | 1603 | |
f0ba3972 PA |
1604 | /* Fill in READBUF with breakpoint shadows, or WRITEBUF with |
1605 | breakpoint insns, thus hiding out from higher layers whether | |
1606 | there are software breakpoints inserted in the code stream. */ | |
1607 | if (readbuf != NULL) | |
1608 | { | |
9b409511 YQ |
1609 | res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len, |
1610 | xfered_len); | |
f0ba3972 | 1611 | |
9b409511 | 1612 | if (res == TARGET_XFER_OK && !show_memory_breakpoints) |
c63528fc | 1613 | breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, *xfered_len); |
f0ba3972 PA |
1614 | } |
1615 | else | |
1616 | { | |
67c059c2 AB |
1617 | /* A large write request is likely to be partially satisfied |
1618 | by memory_xfer_partial_1. We will continually malloc | |
1619 | and free a copy of the entire write request for breakpoint | |
1620 | shadow handling even though we only end up writing a small | |
09c98b44 DB |
1621 | subset of it. Cap writes to a limit specified by the target |
1622 | to mitigate this. */ | |
f6ac5f3d | 1623 | len = std::min (ops->get_memory_xfer_limit (), len); |
67c059c2 | 1624 | |
26fcd5d7 TT |
1625 | gdb::byte_vector buf (writebuf, writebuf + len); |
1626 | breakpoint_xfer_memory (NULL, buf.data (), writebuf, memaddr, len); | |
1627 | res = memory_xfer_partial_1 (ops, object, NULL, buf.data (), memaddr, len, | |
9b409511 | 1628 | xfered_len); |
f0ba3972 PA |
1629 | } |
1630 | ||
1631 | return res; | |
1632 | } | |
1633 | ||
cb85b21b TT |
1634 | scoped_restore_tmpl<int> |
1635 | make_scoped_restore_show_memory_breakpoints (int show) | |
8defab1a | 1636 | { |
cb85b21b | 1637 | return make_scoped_restore (&show_memory_breakpoints, show); |
8defab1a DJ |
1638 | } |
1639 | ||
7f79c47e DE |
1640 | /* For docs see target.h, to_xfer_partial. */ |
1641 | ||
9b409511 | 1642 | enum target_xfer_status |
27394598 AC |
1643 | target_xfer_partial (struct target_ops *ops, |
1644 | enum target_object object, const char *annex, | |
4ac248ca | 1645 | gdb_byte *readbuf, const gdb_byte *writebuf, |
9b409511 YQ |
1646 | ULONGEST offset, ULONGEST len, |
1647 | ULONGEST *xfered_len) | |
27394598 | 1648 | { |
9b409511 | 1649 | enum target_xfer_status retval; |
27394598 | 1650 | |
ce6d0892 YQ |
1651 | /* Transfer is done when LEN is zero. */ |
1652 | if (len == 0) | |
9b409511 | 1653 | return TARGET_XFER_EOF; |
ce6d0892 | 1654 | |
d914c394 SS |
1655 | if (writebuf && !may_write_memory) |
1656 | error (_("Writing to memory is not allowed (addr %s, len %s)"), | |
1657 | core_addr_to_string_nz (offset), plongest (len)); | |
1658 | ||
9b409511 YQ |
1659 | *xfered_len = 0; |
1660 | ||
cf7a04e8 DJ |
1661 | /* If this is a memory transfer, let the memory-specific code |
1662 | have a look at it instead. Memory transfers are more | |
1663 | complicated. */ | |
29453a14 YQ |
1664 | if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY |
1665 | || object == TARGET_OBJECT_CODE_MEMORY) | |
4e5d721f | 1666 | retval = memory_xfer_partial (ops, object, readbuf, |
9b409511 | 1667 | writebuf, offset, len, xfered_len); |
9f713294 | 1668 | else if (object == TARGET_OBJECT_RAW_MEMORY) |
cf7a04e8 | 1669 | { |
0fec99e8 PA |
1670 | /* Skip/avoid accessing the target if the memory region |
1671 | attributes block the access. Check this here instead of in | |
1672 | raw_memory_xfer_partial as otherwise we'd end up checking | |
1673 | this twice in the case of the memory_xfer_partial path is | |
1674 | taken; once before checking the dcache, and another in the | |
1675 | tail call to raw_memory_xfer_partial. */ | |
1676 | if (!memory_xfer_check_region (readbuf, writebuf, offset, len, &len, | |
1677 | NULL)) | |
1678 | return TARGET_XFER_E_IO; | |
1679 | ||
9f713294 | 1680 | /* Request the normal memory object from other layers. */ |
9b409511 YQ |
1681 | retval = raw_memory_xfer_partial (ops, readbuf, writebuf, offset, len, |
1682 | xfered_len); | |
cf7a04e8 | 1683 | } |
9f713294 | 1684 | else |
f6ac5f3d PA |
1685 | retval = ops->xfer_partial (object, annex, readbuf, |
1686 | writebuf, offset, len, xfered_len); | |
cf7a04e8 | 1687 | |
27394598 AC |
1688 | if (targetdebug) |
1689 | { | |
1690 | const unsigned char *myaddr = NULL; | |
1691 | ||
6cb06a8c TT |
1692 | gdb_printf (gdb_stdlog, |
1693 | "%s:target_xfer_partial " | |
1694 | "(%d, %s, %s, %s, %s, %s) = %d, %s", | |
1695 | ops->shortname (), | |
1696 | (int) object, | |
1697 | (annex ? annex : "(null)"), | |
1698 | host_address_to_string (readbuf), | |
1699 | host_address_to_string (writebuf), | |
1700 | core_addr_to_string_nz (offset), | |
1701 | pulongest (len), retval, | |
1702 | pulongest (*xfered_len)); | |
27394598 AC |
1703 | |
1704 | if (readbuf) | |
1705 | myaddr = readbuf; | |
1706 | if (writebuf) | |
1707 | myaddr = writebuf; | |
9b409511 | 1708 | if (retval == TARGET_XFER_OK && myaddr != NULL) |
27394598 AC |
1709 | { |
1710 | int i; | |
2bc416ba | 1711 | |
0426ad51 | 1712 | gdb_puts (", bytes =", gdb_stdlog); |
9b409511 | 1713 | for (i = 0; i < *xfered_len; i++) |
27394598 | 1714 | { |
53b71562 | 1715 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1716 | { |
1717 | if (targetdebug < 2 && i > 0) | |
1718 | { | |
6cb06a8c | 1719 | gdb_printf (gdb_stdlog, " ..."); |
27394598 AC |
1720 | break; |
1721 | } | |
6cb06a8c | 1722 | gdb_printf (gdb_stdlog, "\n"); |
27394598 | 1723 | } |
2bc416ba | 1724 | |
6cb06a8c | 1725 | gdb_printf (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
27394598 AC |
1726 | } |
1727 | } | |
2bc416ba | 1728 | |
a11ac3b3 | 1729 | gdb_putc ('\n', gdb_stdlog); |
27394598 | 1730 | } |
9b409511 YQ |
1731 | |
1732 | /* Check implementations of to_xfer_partial update *XFERED_LEN | |
1733 | properly. Do assertion after printing debug messages, so that we | |
1734 | can find more clues on assertion failure from debugging messages. */ | |
bc113b4e | 1735 | if (retval == TARGET_XFER_OK || retval == TARGET_XFER_UNAVAILABLE) |
9b409511 YQ |
1736 | gdb_assert (*xfered_len > 0); |
1737 | ||
27394598 AC |
1738 | return retval; |
1739 | } | |
1740 | ||
578d3588 PA |
1741 | /* Read LEN bytes of target memory at address MEMADDR, placing the |
1742 | results in GDB's memory at MYADDR. Returns either 0 for success or | |
d09f2c3f | 1743 | -1 if any error occurs. |
c906108c SS |
1744 | |
1745 | If an error occurs, no guarantee is made about the contents of the data at | |
1746 | MYADDR. In particular, the caller should not depend upon partial reads | |
1747 | filling the buffer with good data. There is no way for the caller to know | |
1748 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 | 1749 | deal with partial reads should call target_read (which will retry until |
c378eb4e | 1750 | it makes no progress, and then return how much was transferred). */ |
c906108c SS |
1751 | |
1752 | int | |
1b162304 | 1753 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
c906108c | 1754 | { |
328d42d8 SM |
1755 | if (target_read (current_inferior ()->top_target (), |
1756 | TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1757 | myaddr, memaddr, len) == len) |
1758 | return 0; | |
0779438d | 1759 | else |
d09f2c3f | 1760 | return -1; |
c906108c SS |
1761 | } |
1762 | ||
721ec300 GB |
1763 | /* See target/target.h. */ |
1764 | ||
1765 | int | |
1766 | target_read_uint32 (CORE_ADDR memaddr, uint32_t *result) | |
1767 | { | |
1768 | gdb_byte buf[4]; | |
1769 | int r; | |
1770 | ||
1771 | r = target_read_memory (memaddr, buf, sizeof buf); | |
1772 | if (r != 0) | |
1773 | return r; | |
99d9c3b9 SM |
1774 | *result = extract_unsigned_integer |
1775 | (buf, sizeof buf, | |
1776 | gdbarch_byte_order (current_inferior ()->arch ())); | |
721ec300 GB |
1777 | return 0; |
1778 | } | |
1779 | ||
aee4bf85 PA |
1780 | /* Like target_read_memory, but specify explicitly that this is a read |
1781 | from the target's raw memory. That is, this read bypasses the | |
1782 | dcache, breakpoint shadowing, etc. */ | |
1783 | ||
1784 | int | |
1785 | target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1786 | { | |
328d42d8 SM |
1787 | if (target_read (current_inferior ()->top_target (), |
1788 | TARGET_OBJECT_RAW_MEMORY, NULL, | |
aee4bf85 PA |
1789 | myaddr, memaddr, len) == len) |
1790 | return 0; | |
1791 | else | |
d09f2c3f | 1792 | return -1; |
aee4bf85 PA |
1793 | } |
1794 | ||
4e5d721f DE |
1795 | /* Like target_read_memory, but specify explicitly that this is a read from |
1796 | the target's stack. This may trigger different cache behavior. */ | |
1797 | ||
1798 | int | |
45aa4659 | 1799 | target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
4e5d721f | 1800 | { |
328d42d8 SM |
1801 | if (target_read (current_inferior ()->top_target (), |
1802 | TARGET_OBJECT_STACK_MEMORY, NULL, | |
4e5d721f DE |
1803 | myaddr, memaddr, len) == len) |
1804 | return 0; | |
1805 | else | |
d09f2c3f | 1806 | return -1; |
4e5d721f DE |
1807 | } |
1808 | ||
29453a14 YQ |
1809 | /* Like target_read_memory, but specify explicitly that this is a read from |
1810 | the target's code. This may trigger different cache behavior. */ | |
1811 | ||
1812 | int | |
1813 | target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1814 | { | |
328d42d8 SM |
1815 | if (target_read (current_inferior ()->top_target (), |
1816 | TARGET_OBJECT_CODE_MEMORY, NULL, | |
29453a14 YQ |
1817 | myaddr, memaddr, len) == len) |
1818 | return 0; | |
1819 | else | |
d09f2c3f | 1820 | return -1; |
29453a14 YQ |
1821 | } |
1822 | ||
7f79c47e | 1823 | /* Write LEN bytes from MYADDR to target memory at address MEMADDR. |
d09f2c3f PA |
1824 | Returns either 0 for success or -1 if any error occurs. If an |
1825 | error occurs, no guarantee is made about how much data got written. | |
1826 | Callers that can deal with partial writes should call | |
1827 | target_write. */ | |
7f79c47e | 1828 | |
c906108c | 1829 | int |
45aa4659 | 1830 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
c906108c | 1831 | { |
328d42d8 SM |
1832 | if (target_write (current_inferior ()->top_target (), |
1833 | TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1834 | myaddr, memaddr, len) == len) |
1835 | return 0; | |
0779438d | 1836 | else |
d09f2c3f | 1837 | return -1; |
c906108c | 1838 | } |
c5aa993b | 1839 | |
f0ba3972 | 1840 | /* Write LEN bytes from MYADDR to target raw memory at address |
d09f2c3f PA |
1841 | MEMADDR. Returns either 0 for success or -1 if any error occurs. |
1842 | If an error occurs, no guarantee is made about how much data got | |
1843 | written. Callers that can deal with partial writes should call | |
1844 | target_write. */ | |
f0ba3972 PA |
1845 | |
1846 | int | |
45aa4659 | 1847 | target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
f0ba3972 | 1848 | { |
328d42d8 SM |
1849 | if (target_write (current_inferior ()->top_target (), |
1850 | TARGET_OBJECT_RAW_MEMORY, NULL, | |
f0ba3972 PA |
1851 | myaddr, memaddr, len) == len) |
1852 | return 0; | |
1853 | else | |
d09f2c3f | 1854 | return -1; |
f0ba3972 PA |
1855 | } |
1856 | ||
fd79ecee DJ |
1857 | /* Fetch the target's memory map. */ |
1858 | ||
a664f67e | 1859 | std::vector<mem_region> |
fd79ecee DJ |
1860 | target_memory_map (void) |
1861 | { | |
328d42d8 SM |
1862 | target_ops *target = current_inferior ()->top_target (); |
1863 | std::vector<mem_region> result = target->memory_map (); | |
a664f67e SM |
1864 | if (result.empty ()) |
1865 | return result; | |
fd79ecee | 1866 | |
a664f67e | 1867 | std::sort (result.begin (), result.end ()); |
fd79ecee DJ |
1868 | |
1869 | /* Check that regions do not overlap. Simultaneously assign | |
1870 | a numbering for the "mem" commands to use to refer to | |
1871 | each region. */ | |
a664f67e SM |
1872 | mem_region *last_one = NULL; |
1873 | for (size_t ix = 0; ix < result.size (); ix++) | |
fd79ecee | 1874 | { |
a664f67e | 1875 | mem_region *this_one = &result[ix]; |
fd79ecee DJ |
1876 | this_one->number = ix; |
1877 | ||
a664f67e | 1878 | if (last_one != NULL && last_one->hi > this_one->lo) |
fd79ecee DJ |
1879 | { |
1880 | warning (_("Overlapping regions in memory map: ignoring")); | |
a664f67e | 1881 | return std::vector<mem_region> (); |
fd79ecee | 1882 | } |
a664f67e | 1883 | |
fd79ecee DJ |
1884 | last_one = this_one; |
1885 | } | |
1886 | ||
1887 | return result; | |
1888 | } | |
1889 | ||
a76d924d DJ |
1890 | void |
1891 | target_flash_erase (ULONGEST address, LONGEST length) | |
1892 | { | |
328d42d8 | 1893 | current_inferior ()->top_target ()->flash_erase (address, length); |
a76d924d DJ |
1894 | } |
1895 | ||
1896 | void | |
1897 | target_flash_done (void) | |
1898 | { | |
328d42d8 | 1899 | current_inferior ()->top_target ()->flash_done (); |
a76d924d DJ |
1900 | } |
1901 | ||
920d2a44 AC |
1902 | static void |
1903 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1904 | struct cmd_list_element *c, const char *value) | |
1905 | { | |
6cb06a8c TT |
1906 | gdb_printf (file, |
1907 | _("Mode for reading from readonly sections is %s.\n"), | |
1908 | value); | |
920d2a44 | 1909 | } |
3a11626d | 1910 | |
7f79c47e | 1911 | /* Target vector read/write partial wrapper functions. */ |
0088c768 | 1912 | |
9b409511 | 1913 | static enum target_xfer_status |
1e3ff5ad AC |
1914 | target_read_partial (struct target_ops *ops, |
1915 | enum target_object object, | |
1b0ba102 | 1916 | const char *annex, gdb_byte *buf, |
9b409511 YQ |
1917 | ULONGEST offset, ULONGEST len, |
1918 | ULONGEST *xfered_len) | |
1e3ff5ad | 1919 | { |
9b409511 YQ |
1920 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len, |
1921 | xfered_len); | |
1e3ff5ad AC |
1922 | } |
1923 | ||
8a55ffb0 | 1924 | static enum target_xfer_status |
1e3ff5ad AC |
1925 | target_write_partial (struct target_ops *ops, |
1926 | enum target_object object, | |
1b0ba102 | 1927 | const char *annex, const gdb_byte *buf, |
9b409511 | 1928 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len) |
1e3ff5ad | 1929 | { |
9b409511 YQ |
1930 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len, |
1931 | xfered_len); | |
1e3ff5ad AC |
1932 | } |
1933 | ||
1934 | /* Wrappers to perform the full transfer. */ | |
7f79c47e DE |
1935 | |
1936 | /* For docs on target_read see target.h. */ | |
1937 | ||
1e3ff5ad AC |
1938 | LONGEST |
1939 | target_read (struct target_ops *ops, | |
1940 | enum target_object object, | |
1b0ba102 | 1941 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1942 | ULONGEST offset, LONGEST len) |
1943 | { | |
279a6fed | 1944 | LONGEST xfered_total = 0; |
d309493c SM |
1945 | int unit_size = 1; |
1946 | ||
1947 | /* If we are reading from a memory object, find the length of an addressable | |
1948 | unit for that architecture. */ | |
1949 | if (object == TARGET_OBJECT_MEMORY | |
1950 | || object == TARGET_OBJECT_STACK_MEMORY | |
1951 | || object == TARGET_OBJECT_CODE_MEMORY | |
1952 | || object == TARGET_OBJECT_RAW_MEMORY) | |
99d9c3b9 SM |
1953 | unit_size = gdbarch_addressable_memory_unit_size |
1954 | (current_inferior ()->arch ()); | |
5d502164 | 1955 | |
279a6fed | 1956 | while (xfered_total < len) |
1e3ff5ad | 1957 | { |
279a6fed | 1958 | ULONGEST xfered_partial; |
9b409511 YQ |
1959 | enum target_xfer_status status; |
1960 | ||
1961 | status = target_read_partial (ops, object, annex, | |
d309493c | 1962 | buf + xfered_total * unit_size, |
279a6fed SM |
1963 | offset + xfered_total, len - xfered_total, |
1964 | &xfered_partial); | |
5d502164 | 1965 | |
1e3ff5ad | 1966 | /* Call an observer, notifying them of the xfer progress? */ |
9b409511 | 1967 | if (status == TARGET_XFER_EOF) |
279a6fed | 1968 | return xfered_total; |
9b409511 YQ |
1969 | else if (status == TARGET_XFER_OK) |
1970 | { | |
279a6fed | 1971 | xfered_total += xfered_partial; |
9b409511 YQ |
1972 | QUIT; |
1973 | } | |
1974 | else | |
279a6fed | 1975 | return TARGET_XFER_E_IO; |
9b409511 | 1976 | |
1e3ff5ad AC |
1977 | } |
1978 | return len; | |
1979 | } | |
1980 | ||
f1a507a1 JB |
1981 | /* Assuming that the entire [begin, end) range of memory cannot be |
1982 | read, try to read whatever subrange is possible to read. | |
1983 | ||
1984 | The function returns, in RESULT, either zero or one memory block. | |
1985 | If there's a readable subrange at the beginning, it is completely | |
1986 | read and returned. Any further readable subrange will not be read. | |
1987 | Otherwise, if there's a readable subrange at the end, it will be | |
1988 | completely read and returned. Any readable subranges before it | |
1989 | (obviously, not starting at the beginning), will be ignored. In | |
1990 | other cases -- either no readable subrange, or readable subrange(s) | |
1991 | that is neither at the beginning, or end, nothing is returned. | |
1992 | ||
1993 | The purpose of this function is to handle a read across a boundary | |
1994 | of accessible memory in a case when memory map is not available. | |
1995 | The above restrictions are fine for this case, but will give | |
1996 | incorrect results if the memory is 'patchy'. However, supporting | |
1997 | 'patchy' memory would require trying to read every single byte, | |
1998 | and it seems unacceptable solution. Explicit memory map is | |
1999 | recommended for this case -- and target_read_memory_robust will | |
2000 | take care of reading multiple ranges then. */ | |
8dedea02 VP |
2001 | |
2002 | static void | |
3e43a32a | 2003 | read_whatever_is_readable (struct target_ops *ops, |
279a6fed | 2004 | const ULONGEST begin, const ULONGEST end, |
d309493c | 2005 | int unit_size, |
386c8614 | 2006 | std::vector<memory_read_result> *result) |
d5086790 | 2007 | { |
8dedea02 VP |
2008 | ULONGEST current_begin = begin; |
2009 | ULONGEST current_end = end; | |
2010 | int forward; | |
9b409511 | 2011 | ULONGEST xfered_len; |
8dedea02 VP |
2012 | |
2013 | /* If we previously failed to read 1 byte, nothing can be done here. */ | |
2014 | if (end - begin <= 1) | |
386c8614 TT |
2015 | return; |
2016 | ||
2017 | gdb::unique_xmalloc_ptr<gdb_byte> buf ((gdb_byte *) xmalloc (end - begin)); | |
8dedea02 VP |
2018 | |
2019 | /* Check that either first or the last byte is readable, and give up | |
c378eb4e | 2020 | if not. This heuristic is meant to permit reading accessible memory |
8dedea02 VP |
2021 | at the boundary of accessible region. */ |
2022 | if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
386c8614 | 2023 | buf.get (), begin, 1, &xfered_len) == TARGET_XFER_OK) |
8dedea02 VP |
2024 | { |
2025 | forward = 1; | |
2026 | ++current_begin; | |
2027 | } | |
2028 | else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
386c8614 | 2029 | buf.get () + (end - begin) - 1, end - 1, 1, |
9b409511 | 2030 | &xfered_len) == TARGET_XFER_OK) |
8dedea02 VP |
2031 | { |
2032 | forward = 0; | |
2033 | --current_end; | |
2034 | } | |
2035 | else | |
386c8614 | 2036 | return; |
8dedea02 VP |
2037 | |
2038 | /* Loop invariant is that the [current_begin, current_end) was previously | |
2039 | found to be not readable as a whole. | |
2040 | ||
2041 | Note loop condition -- if the range has 1 byte, we can't divide the range | |
2042 | so there's no point trying further. */ | |
2043 | while (current_end - current_begin > 1) | |
2044 | { | |
2045 | ULONGEST first_half_begin, first_half_end; | |
2046 | ULONGEST second_half_begin, second_half_end; | |
2047 | LONGEST xfer; | |
279a6fed | 2048 | ULONGEST middle = current_begin + (current_end - current_begin) / 2; |
f1a507a1 | 2049 | |
8dedea02 VP |
2050 | if (forward) |
2051 | { | |
2052 | first_half_begin = current_begin; | |
2053 | first_half_end = middle; | |
2054 | second_half_begin = middle; | |
2055 | second_half_end = current_end; | |
2056 | } | |
2057 | else | |
2058 | { | |
2059 | first_half_begin = middle; | |
2060 | first_half_end = current_end; | |
2061 | second_half_begin = current_begin; | |
2062 | second_half_end = middle; | |
2063 | } | |
2064 | ||
2065 | xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
386c8614 | 2066 | buf.get () + (first_half_begin - begin) * unit_size, |
8dedea02 VP |
2067 | first_half_begin, |
2068 | first_half_end - first_half_begin); | |
2069 | ||
2070 | if (xfer == first_half_end - first_half_begin) | |
2071 | { | |
c378eb4e | 2072 | /* This half reads up fine. So, the error must be in the |
3e43a32a | 2073 | other half. */ |
8dedea02 VP |
2074 | current_begin = second_half_begin; |
2075 | current_end = second_half_end; | |
2076 | } | |
2077 | else | |
2078 | { | |
c378eb4e | 2079 | /* This half is not readable. Because we've tried one byte, we |
279a6fed | 2080 | know some part of this half if actually readable. Go to the next |
8dedea02 VP |
2081 | iteration to divide again and try to read. |
2082 | ||
2083 | We don't handle the other half, because this function only tries | |
2084 | to read a single readable subrange. */ | |
2085 | current_begin = first_half_begin; | |
2086 | current_end = first_half_end; | |
2087 | } | |
2088 | } | |
2089 | ||
2090 | if (forward) | |
2091 | { | |
2092 | /* The [begin, current_begin) range has been read. */ | |
386c8614 | 2093 | result->emplace_back (begin, current_end, std::move (buf)); |
8dedea02 VP |
2094 | } |
2095 | else | |
2096 | { | |
2097 | /* The [current_end, end) range has been read. */ | |
279a6fed | 2098 | LONGEST region_len = end - current_end; |
f1a507a1 | 2099 | |
386c8614 TT |
2100 | gdb::unique_xmalloc_ptr<gdb_byte> data |
2101 | ((gdb_byte *) xmalloc (region_len * unit_size)); | |
2102 | memcpy (data.get (), buf.get () + (current_end - begin) * unit_size, | |
d309493c | 2103 | region_len * unit_size); |
386c8614 | 2104 | result->emplace_back (current_end, end, std::move (data)); |
8dedea02 | 2105 | } |
8dedea02 VP |
2106 | } |
2107 | ||
386c8614 | 2108 | std::vector<memory_read_result> |
279a6fed SM |
2109 | read_memory_robust (struct target_ops *ops, |
2110 | const ULONGEST offset, const LONGEST len) | |
8dedea02 | 2111 | { |
386c8614 | 2112 | std::vector<memory_read_result> result; |
99d9c3b9 SM |
2113 | int unit_size |
2114 | = gdbarch_addressable_memory_unit_size (current_inferior ()->arch ()); | |
8dedea02 | 2115 | |
279a6fed SM |
2116 | LONGEST xfered_total = 0; |
2117 | while (xfered_total < len) | |
d5086790 | 2118 | { |
279a6fed SM |
2119 | struct mem_region *region = lookup_mem_region (offset + xfered_total); |
2120 | LONGEST region_len; | |
5d502164 | 2121 | |
8dedea02 VP |
2122 | /* If there is no explicit region, a fake one should be created. */ |
2123 | gdb_assert (region); | |
2124 | ||
2125 | if (region->hi == 0) | |
279a6fed | 2126 | region_len = len - xfered_total; |
8dedea02 | 2127 | else |
279a6fed | 2128 | region_len = region->hi - offset; |
8dedea02 VP |
2129 | |
2130 | if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO) | |
d5086790 | 2131 | { |
c378eb4e | 2132 | /* Cannot read this region. Note that we can end up here only |
8dedea02 VP |
2133 | if the region is explicitly marked inaccessible, or |
2134 | 'inaccessible-by-default' is in effect. */ | |
279a6fed | 2135 | xfered_total += region_len; |
8dedea02 VP |
2136 | } |
2137 | else | |
2138 | { | |
325fac50 | 2139 | LONGEST to_read = std::min (len - xfered_total, region_len); |
386c8614 TT |
2140 | gdb::unique_xmalloc_ptr<gdb_byte> buffer |
2141 | ((gdb_byte *) xmalloc (to_read * unit_size)); | |
8dedea02 | 2142 | |
279a6fed | 2143 | LONGEST xfered_partial = |
386c8614 | 2144 | target_read (ops, TARGET_OBJECT_MEMORY, NULL, buffer.get (), |
279a6fed | 2145 | offset + xfered_total, to_read); |
8dedea02 | 2146 | /* Call an observer, notifying them of the xfer progress? */ |
279a6fed | 2147 | if (xfered_partial <= 0) |
d5086790 | 2148 | { |
c378eb4e | 2149 | /* Got an error reading full chunk. See if maybe we can read |
8dedea02 | 2150 | some subrange. */ |
e084c964 DB |
2151 | read_whatever_is_readable (ops, offset + xfered_total, |
2152 | offset + xfered_total + to_read, | |
2153 | unit_size, &result); | |
279a6fed | 2154 | xfered_total += to_read; |
d5086790 | 2155 | } |
8dedea02 VP |
2156 | else |
2157 | { | |
386c8614 TT |
2158 | result.emplace_back (offset + xfered_total, |
2159 | offset + xfered_total + xfered_partial, | |
2160 | std::move (buffer)); | |
279a6fed | 2161 | xfered_total += xfered_partial; |
8dedea02 VP |
2162 | } |
2163 | QUIT; | |
d5086790 | 2164 | } |
d5086790 | 2165 | } |
9d78f827 | 2166 | |
8dedea02 | 2167 | return result; |
d5086790 VP |
2168 | } |
2169 | ||
8dedea02 | 2170 | |
cf7a04e8 DJ |
2171 | /* An alternative to target_write with progress callbacks. */ |
2172 | ||
1e3ff5ad | 2173 | LONGEST |
cf7a04e8 DJ |
2174 | target_write_with_progress (struct target_ops *ops, |
2175 | enum target_object object, | |
2176 | const char *annex, const gdb_byte *buf, | |
2177 | ULONGEST offset, LONGEST len, | |
2178 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad | 2179 | { |
279a6fed | 2180 | LONGEST xfered_total = 0; |
d309493c SM |
2181 | int unit_size = 1; |
2182 | ||
2183 | /* If we are writing to a memory object, find the length of an addressable | |
2184 | unit for that architecture. */ | |
2185 | if (object == TARGET_OBJECT_MEMORY | |
2186 | || object == TARGET_OBJECT_STACK_MEMORY | |
2187 | || object == TARGET_OBJECT_CODE_MEMORY | |
2188 | || object == TARGET_OBJECT_RAW_MEMORY) | |
99d9c3b9 SM |
2189 | unit_size = gdbarch_addressable_memory_unit_size |
2190 | (current_inferior ()->arch ()); | |
a76d924d DJ |
2191 | |
2192 | /* Give the progress callback a chance to set up. */ | |
2193 | if (progress) | |
2194 | (*progress) (0, baton); | |
2195 | ||
279a6fed | 2196 | while (xfered_total < len) |
1e3ff5ad | 2197 | { |
279a6fed | 2198 | ULONGEST xfered_partial; |
9b409511 YQ |
2199 | enum target_xfer_status status; |
2200 | ||
2201 | status = target_write_partial (ops, object, annex, | |
d309493c | 2202 | buf + xfered_total * unit_size, |
279a6fed SM |
2203 | offset + xfered_total, len - xfered_total, |
2204 | &xfered_partial); | |
cf7a04e8 | 2205 | |
5c328c05 | 2206 | if (status != TARGET_XFER_OK) |
279a6fed | 2207 | return status == TARGET_XFER_EOF ? xfered_total : TARGET_XFER_E_IO; |
cf7a04e8 DJ |
2208 | |
2209 | if (progress) | |
279a6fed | 2210 | (*progress) (xfered_partial, baton); |
cf7a04e8 | 2211 | |
279a6fed | 2212 | xfered_total += xfered_partial; |
1e3ff5ad AC |
2213 | QUIT; |
2214 | } | |
2215 | return len; | |
2216 | } | |
2217 | ||
7f79c47e DE |
2218 | /* For docs on target_write see target.h. */ |
2219 | ||
cf7a04e8 DJ |
2220 | LONGEST |
2221 | target_write (struct target_ops *ops, | |
2222 | enum target_object object, | |
2223 | const char *annex, const gdb_byte *buf, | |
2224 | ULONGEST offset, LONGEST len) | |
2225 | { | |
2226 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
2227 | NULL, NULL); | |
2228 | } | |
2229 | ||
9018be22 SM |
2230 | /* Help for target_read_alloc and target_read_stralloc. See their comments |
2231 | for details. */ | |
13547ab6 | 2232 | |
9018be22 SM |
2233 | template <typename T> |
2234 | gdb::optional<gdb::def_vector<T>> | |
159f81f3 | 2235 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, |
9018be22 | 2236 | const char *annex) |
13547ab6 | 2237 | { |
9018be22 SM |
2238 | gdb::def_vector<T> buf; |
2239 | size_t buf_pos = 0; | |
2240 | const int chunk = 4096; | |
13547ab6 DJ |
2241 | |
2242 | /* This function does not have a length parameter; it reads the | |
2243 | entire OBJECT). Also, it doesn't support objects fetched partly | |
2244 | from one target and partly from another (in a different stratum, | |
2245 | e.g. a core file and an executable). Both reasons make it | |
2246 | unsuitable for reading memory. */ | |
2247 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
2248 | ||
2249 | /* Start by reading up to 4K at a time. The target will throttle | |
2250 | this number down if necessary. */ | |
13547ab6 DJ |
2251 | while (1) |
2252 | { | |
9b409511 YQ |
2253 | ULONGEST xfered_len; |
2254 | enum target_xfer_status status; | |
2255 | ||
9018be22 SM |
2256 | buf.resize (buf_pos + chunk); |
2257 | ||
2258 | status = target_read_partial (ops, object, annex, | |
2259 | (gdb_byte *) &buf[buf_pos], | |
2260 | buf_pos, chunk, | |
9b409511 YQ |
2261 | &xfered_len); |
2262 | ||
2263 | if (status == TARGET_XFER_EOF) | |
13547ab6 DJ |
2264 | { |
2265 | /* Read all there was. */ | |
9018be22 SM |
2266 | buf.resize (buf_pos); |
2267 | return buf; | |
13547ab6 | 2268 | } |
9b409511 YQ |
2269 | else if (status != TARGET_XFER_OK) |
2270 | { | |
2271 | /* An error occurred. */ | |
9018be22 | 2272 | return {}; |
9b409511 | 2273 | } |
13547ab6 | 2274 | |
9b409511 | 2275 | buf_pos += xfered_len; |
13547ab6 | 2276 | |
13547ab6 DJ |
2277 | QUIT; |
2278 | } | |
2279 | } | |
2280 | ||
9018be22 | 2281 | /* See target.h */ |
159f81f3 | 2282 | |
9018be22 | 2283 | gdb::optional<gdb::byte_vector> |
159f81f3 | 2284 | target_read_alloc (struct target_ops *ops, enum target_object object, |
9018be22 | 2285 | const char *annex) |
159f81f3 | 2286 | { |
9018be22 | 2287 | return target_read_alloc_1<gdb_byte> (ops, object, annex); |
159f81f3 DJ |
2288 | } |
2289 | ||
b7b030ad | 2290 | /* See target.h. */ |
159f81f3 | 2291 | |
9018be22 | 2292 | gdb::optional<gdb::char_vector> |
159f81f3 DJ |
2293 | target_read_stralloc (struct target_ops *ops, enum target_object object, |
2294 | const char *annex) | |
2295 | { | |
9018be22 SM |
2296 | gdb::optional<gdb::char_vector> buf |
2297 | = target_read_alloc_1<char> (ops, object, annex); | |
159f81f3 | 2298 | |
9018be22 SM |
2299 | if (!buf) |
2300 | return {}; | |
159f81f3 | 2301 | |
d00a27c5 | 2302 | if (buf->empty () || buf->back () != '\0') |
9018be22 | 2303 | buf->push_back ('\0'); |
7313baad UW |
2304 | |
2305 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
9018be22 SM |
2306 | for (auto it = std::find (buf->begin (), buf->end (), '\0'); |
2307 | it != buf->end (); it++) | |
2308 | if (*it != '\0') | |
7313baad UW |
2309 | { |
2310 | warning (_("target object %d, annex %s, " | |
2311 | "contained unexpected null characters"), | |
2312 | (int) object, annex ? annex : "(none)"); | |
2313 | break; | |
2314 | } | |
159f81f3 | 2315 | |
9018be22 | 2316 | return buf; |
159f81f3 DJ |
2317 | } |
2318 | ||
b6591e8b AC |
2319 | /* Memory transfer methods. */ |
2320 | ||
2321 | void | |
1b0ba102 | 2322 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
2323 | LONGEST len) |
2324 | { | |
07b82ea5 PA |
2325 | /* This method is used to read from an alternate, non-current |
2326 | target. This read must bypass the overlay support (as symbols | |
2327 | don't match this target), and GDB's internal cache (wrong cache | |
2328 | for this target). */ | |
2329 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) | |
b6591e8b | 2330 | != len) |
578d3588 | 2331 | memory_error (TARGET_XFER_E_IO, addr); |
b6591e8b AC |
2332 | } |
2333 | ||
2334 | ULONGEST | |
5d502164 MS |
2335 | get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr, |
2336 | int len, enum bfd_endian byte_order) | |
b6591e8b | 2337 | { |
f6519ebc | 2338 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
2339 | |
2340 | gdb_assert (len <= sizeof (buf)); | |
2341 | get_target_memory (ops, addr, buf, len); | |
e17a4113 | 2342 | return extract_unsigned_integer (buf, len, byte_order); |
b6591e8b AC |
2343 | } |
2344 | ||
3db08215 MM |
2345 | /* See target.h. */ |
2346 | ||
d914c394 SS |
2347 | int |
2348 | target_insert_breakpoint (struct gdbarch *gdbarch, | |
2349 | struct bp_target_info *bp_tgt) | |
2350 | { | |
2351 | if (!may_insert_breakpoints) | |
2352 | { | |
2353 | warning (_("May not insert breakpoints")); | |
2354 | return 1; | |
2355 | } | |
2356 | ||
328d42d8 SM |
2357 | target_ops *target = current_inferior ()->top_target (); |
2358 | ||
2359 | return target->insert_breakpoint (gdbarch, bp_tgt); | |
d914c394 SS |
2360 | } |
2361 | ||
3db08215 MM |
2362 | /* See target.h. */ |
2363 | ||
d914c394 | 2364 | int |
6b84065d | 2365 | target_remove_breakpoint (struct gdbarch *gdbarch, |
73971819 PA |
2366 | struct bp_target_info *bp_tgt, |
2367 | enum remove_bp_reason reason) | |
d914c394 SS |
2368 | { |
2369 | /* This is kind of a weird case to handle, but the permission might | |
2370 | have been changed after breakpoints were inserted - in which case | |
2371 | we should just take the user literally and assume that any | |
2372 | breakpoints should be left in place. */ | |
2373 | if (!may_insert_breakpoints) | |
2374 | { | |
2375 | warning (_("May not remove breakpoints")); | |
2376 | return 1; | |
2377 | } | |
2378 | ||
328d42d8 SM |
2379 | target_ops *target = current_inferior ()->top_target (); |
2380 | ||
2381 | return target->remove_breakpoint (gdbarch, bp_tgt, reason); | |
d914c394 SS |
2382 | } |
2383 | ||
c906108c | 2384 | static void |
1d12d88f | 2385 | info_target_command (const char *args, int from_tty) |
c906108c | 2386 | { |
c906108c | 2387 | int has_all_mem = 0; |
c5aa993b | 2388 | |
a42d7dd8 TT |
2389 | if (current_program_space->symfile_object_file != NULL) |
2390 | { | |
2391 | objfile *objf = current_program_space->symfile_object_file; | |
6cb06a8c TT |
2392 | gdb_printf (_("Symbols from \"%s\".\n"), |
2393 | objfile_name (objf)); | |
a42d7dd8 | 2394 | } |
c906108c | 2395 | |
328d42d8 SM |
2396 | for (target_ops *t = current_inferior ()->top_target (); |
2397 | t != NULL; | |
2398 | t = t->beneath ()) | |
c906108c | 2399 | { |
f6ac5f3d | 2400 | if (!t->has_memory ()) |
c906108c SS |
2401 | continue; |
2402 | ||
66b4deae | 2403 | if ((int) (t->stratum ()) <= (int) dummy_stratum) |
c906108c SS |
2404 | continue; |
2405 | if (has_all_mem) | |
6cb06a8c TT |
2406 | gdb_printf (_("\tWhile running this, " |
2407 | "GDB does not access memory from...\n")); | |
2408 | gdb_printf ("%s:\n", t->longname ()); | |
f6ac5f3d PA |
2409 | t->files_info (); |
2410 | has_all_mem = t->has_all_memory (); | |
c906108c SS |
2411 | } |
2412 | } | |
2413 | ||
fd79ecee DJ |
2414 | /* This function is called before any new inferior is created, e.g. |
2415 | by running a program, attaching, or connecting to a target. | |
2416 | It cleans up any state from previous invocations which might | |
2417 | change between runs. This is a subset of what target_preopen | |
2418 | resets (things which might change between targets). */ | |
2419 | ||
2420 | void | |
2421 | target_pre_inferior (int from_tty) | |
2422 | { | |
c378eb4e | 2423 | /* Clear out solib state. Otherwise the solib state of the previous |
b9db4ced | 2424 | inferior might have survived and is entirely wrong for the new |
c378eb4e | 2425 | target. This has been observed on GNU/Linux using glibc 2.3. How |
b9db4ced UW |
2426 | to reproduce: |
2427 | ||
2428 | bash$ ./foo& | |
2429 | [1] 4711 | |
2430 | bash$ ./foo& | |
2431 | [1] 4712 | |
2432 | bash$ gdb ./foo | |
2433 | [...] | |
2434 | (gdb) attach 4711 | |
2435 | (gdb) detach | |
2436 | (gdb) attach 4712 | |
2437 | Cannot access memory at address 0xdeadbeef | |
2438 | */ | |
b9db4ced | 2439 | |
50c71eaf PA |
2440 | /* In some OSs, the shared library list is the same/global/shared |
2441 | across inferiors. If code is shared between processes, so are | |
2442 | memory regions and features. */ | |
99d9c3b9 | 2443 | if (!gdbarch_has_global_solist (current_inferior ()->arch ())) |
50c71eaf PA |
2444 | { |
2445 | no_shared_libraries (NULL, from_tty); | |
2446 | ||
2447 | invalidate_target_mem_regions (); | |
424163ea | 2448 | |
50c71eaf PA |
2449 | target_clear_description (); |
2450 | } | |
8ffcbaaf | 2451 | |
e9756d52 PP |
2452 | /* attach_flag may be set if the previous process associated with |
2453 | the inferior was attached to. */ | |
30220b46 | 2454 | current_inferior ()->attach_flag = false; |
e9756d52 | 2455 | |
5d5658a1 PA |
2456 | current_inferior ()->highest_thread_num = 0; |
2457 | ||
a81871f7 PA |
2458 | update_previous_thread (); |
2459 | ||
8ffcbaaf | 2460 | agent_capability_invalidate (); |
fd79ecee DJ |
2461 | } |
2462 | ||
c906108c SS |
2463 | /* This is to be called by the open routine before it does |
2464 | anything. */ | |
2465 | ||
2466 | void | |
fba45db2 | 2467 | target_preopen (int from_tty) |
c906108c | 2468 | { |
c5aa993b | 2469 | dont_repeat (); |
c906108c | 2470 | |
5b6d1e4f | 2471 | if (current_inferior ()->pid != 0) |
c5aa993b | 2472 | { |
adf40b2e | 2473 | if (!from_tty |
55f6301a | 2474 | || !target_has_execution () |
b8fa0bfa | 2475 | || query (_("A program is being debugged already. Kill it? "))) |
5b6d1e4f PA |
2476 | { |
2477 | /* Core inferiors actually should be detached, not | |
2478 | killed. */ | |
55f6301a | 2479 | if (target_has_execution ()) |
5b6d1e4f PA |
2480 | target_kill (); |
2481 | else | |
2482 | target_detach (current_inferior (), 0); | |
2483 | } | |
c906108c | 2484 | else |
8a3fe4f8 | 2485 | error (_("Program not killed.")); |
c906108c SS |
2486 | } |
2487 | ||
a81871f7 PA |
2488 | /* Release reference to old previous thread. */ |
2489 | update_previous_thread (); | |
2490 | ||
c906108c SS |
2491 | /* Calling target_kill may remove the target from the stack. But if |
2492 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
2493 | /* Leave the exec target, though. The user may be switching from a |
2494 | live process to a core of the same program. */ | |
c8181f70 | 2495 | current_inferior ()->pop_all_targets_above (file_stratum); |
fd79ecee DJ |
2496 | |
2497 | target_pre_inferior (from_tty); | |
c906108c SS |
2498 | } |
2499 | ||
6bd6f3b6 | 2500 | /* See target.h. */ |
c906108c SS |
2501 | |
2502 | void | |
6e1e1966 | 2503 | target_detach (inferior *inf, int from_tty) |
c906108c | 2504 | { |
ddff2a2d AB |
2505 | /* Thread's don't need to be resumed until the end of this function. */ |
2506 | scoped_disable_commit_resumed disable_commit_resumed ("detaching"); | |
2507 | ||
5783e150 PW |
2508 | /* After we have detached, we will clear the register cache for this inferior |
2509 | by calling registers_changed_ptid. We must save the pid_ptid before | |
2510 | detaching, as the target detach method will clear inf->pid. */ | |
2511 | ptid_t save_pid_ptid = ptid_t (inf->pid); | |
2512 | ||
6e1e1966 | 2513 | /* As long as some to_detach implementations rely on the current_inferior |
99d9c3b9 SM |
2514 | (either directly, or indirectly, like through reading memory), INF needs |
2515 | to be the current inferior. When that requirement will become no longer | |
2516 | true, then we can remove this assertion. */ | |
6e1e1966 SM |
2517 | gdb_assert (inf == current_inferior ()); |
2518 | ||
24291992 PA |
2519 | prepare_for_detach (); |
2520 | ||
9056c917 SM |
2521 | gdb::observers::inferior_pre_detach.notify (inf); |
2522 | ||
5b6d1e4f PA |
2523 | /* Hold a strong reference because detaching may unpush the |
2524 | target. */ | |
2525 | auto proc_target_ref = target_ops_ref::new_reference (inf->process_target ()); | |
2526 | ||
328d42d8 | 2527 | current_inferior ()->top_target ()->detach (inf, from_tty); |
799efbe8 | 2528 | |
5b6d1e4f PA |
2529 | process_stratum_target *proc_target |
2530 | = as_process_stratum_target (proc_target_ref.get ()); | |
2531 | ||
2532 | registers_changed_ptid (proc_target, save_pid_ptid); | |
799efbe8 PW |
2533 | |
2534 | /* We have to ensure we have no frame cache left. Normally, | |
5783e150 PW |
2535 | registers_changed_ptid (save_pid_ptid) calls reinit_frame_cache when |
2536 | inferior_ptid matches save_pid_ptid, but in our case, it does not | |
799efbe8 PW |
2537 | call it, as inferior_ptid has been reset. */ |
2538 | reinit_frame_cache (); | |
ddff2a2d AB |
2539 | |
2540 | disable_commit_resumed.reset_and_commit (); | |
c906108c SS |
2541 | } |
2542 | ||
6ad8ae5c | 2543 | void |
fee354ee | 2544 | target_disconnect (const char *args, int from_tty) |
6ad8ae5c | 2545 | { |
50c71eaf PA |
2546 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
2547 | are global across processes, we have to remove them before | |
2548 | disconnecting. */ | |
74960c60 VP |
2549 | remove_breakpoints (); |
2550 | ||
328d42d8 | 2551 | current_inferior ()->top_target ()->disconnect (args, from_tty); |
6ad8ae5c DJ |
2552 | } |
2553 | ||
f2b9e3df SDJ |
2554 | /* See target/target.h. */ |
2555 | ||
117de6a9 | 2556 | ptid_t |
b60cea74 TT |
2557 | target_wait (ptid_t ptid, struct target_waitstatus *status, |
2558 | target_wait_flags options) | |
117de6a9 | 2559 | { |
328d42d8 | 2560 | target_ops *target = current_inferior ()->top_target (); |
1192f124 SM |
2561 | process_stratum_target *proc_target = current_inferior ()->process_target (); |
2562 | ||
2563 | gdb_assert (!proc_target->commit_resumed_state); | |
d3a07122 | 2564 | |
0c1e6e26 | 2565 | if (!target_can_async_p (target)) |
d3a07122 SM |
2566 | gdb_assert ((options & TARGET_WNOHANG) == 0); |
2567 | ||
fb85cece PM |
2568 | try |
2569 | { | |
2570 | gdb::observers::target_pre_wait.notify (ptid); | |
2571 | ptid_t event_ptid = target->wait (ptid, status, options); | |
2572 | gdb::observers::target_post_wait.notify (event_ptid); | |
2573 | return event_ptid; | |
2574 | } | |
2575 | catch (...) | |
2576 | { | |
2577 | gdb::observers::target_post_wait.notify (null_ptid); | |
2578 | throw; | |
2579 | } | |
117de6a9 PA |
2580 | } |
2581 | ||
0b333c5e PA |
2582 | /* See target.h. */ |
2583 | ||
2584 | ptid_t | |
2585 | default_target_wait (struct target_ops *ops, | |
2586 | ptid_t ptid, struct target_waitstatus *status, | |
b60cea74 | 2587 | target_wait_flags options) |
0b333c5e | 2588 | { |
183be222 | 2589 | status->set_ignore (); |
0b333c5e PA |
2590 | return minus_one_ptid; |
2591 | } | |
2592 | ||
a068643d | 2593 | std::string |
117de6a9 PA |
2594 | target_pid_to_str (ptid_t ptid) |
2595 | { | |
328d42d8 | 2596 | return current_inferior ()->top_target ()->pid_to_str (ptid); |
117de6a9 PA |
2597 | } |
2598 | ||
73ede765 | 2599 | const char * |
4694da01 TT |
2600 | target_thread_name (struct thread_info *info) |
2601 | { | |
5b6d1e4f PA |
2602 | gdb_assert (info->inf == current_inferior ()); |
2603 | ||
328d42d8 | 2604 | return current_inferior ()->top_target ()->thread_name (info); |
4694da01 TT |
2605 | } |
2606 | ||
e04ee09e KB |
2607 | struct thread_info * |
2608 | target_thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
2609 | int handle_len, | |
2610 | struct inferior *inf) | |
2611 | { | |
328d42d8 SM |
2612 | target_ops *target = current_inferior ()->top_target (); |
2613 | ||
2614 | return target->thread_handle_to_thread_info (thread_handle, handle_len, inf); | |
e04ee09e KB |
2615 | } |
2616 | ||
3d6c6204 KB |
2617 | /* See target.h. */ |
2618 | ||
1f08d324 | 2619 | gdb::array_view<const gdb_byte> |
3d6c6204 KB |
2620 | target_thread_info_to_thread_handle (struct thread_info *tip) |
2621 | { | |
328d42d8 SM |
2622 | target_ops *target = current_inferior ()->top_target (); |
2623 | ||
2624 | return target->thread_info_to_thread_handle (tip); | |
3d6c6204 KB |
2625 | } |
2626 | ||
e1ac3328 | 2627 | void |
d51926f0 | 2628 | target_resume (ptid_t scope_ptid, int step, enum gdb_signal signal) |
e1ac3328 | 2629 | { |
5b6d1e4f | 2630 | process_stratum_target *curr_target = current_inferior ()->process_target (); |
1192f124 | 2631 | gdb_assert (!curr_target->commit_resumed_state); |
5b6d1e4f | 2632 | |
d51926f0 PA |
2633 | gdb_assert (inferior_ptid != null_ptid); |
2634 | gdb_assert (inferior_ptid.matches (scope_ptid)); | |
2635 | ||
41336620 | 2636 | target_dcache_invalidate (current_program_space->aspace); |
28439f5e | 2637 | |
d51926f0 | 2638 | current_inferior ()->top_target ()->resume (scope_ptid, step, signal); |
28439f5e | 2639 | |
d51926f0 | 2640 | registers_changed_ptid (curr_target, scope_ptid); |
251bde03 | 2641 | /* We only set the internal executing state here. The user/frontend |
f2ffa92b PA |
2642 | running state is set at a higher level. This also clears the |
2643 | thread's stop_pc as side effect. */ | |
d51926f0 PA |
2644 | set_executing (curr_target, scope_ptid, true); |
2645 | clear_inline_frame_state (curr_target, scope_ptid); | |
38ba82db JB |
2646 | |
2647 | if (target_can_async_p ()) | |
4a570176 | 2648 | target_async (true); |
e1ac3328 | 2649 | } |
2455069d | 2650 | |
85ad3aaf PA |
2651 | /* See target.h. */ |
2652 | ||
2653 | void | |
1192f124 | 2654 | target_commit_resumed () |
85ad3aaf | 2655 | { |
1192f124 SM |
2656 | gdb_assert (current_inferior ()->process_target ()->commit_resumed_state); |
2657 | current_inferior ()->top_target ()->commit_resumed (); | |
85ad3aaf PA |
2658 | } |
2659 | ||
b4b1a226 SM |
2660 | /* See target.h. */ |
2661 | ||
2662 | bool | |
2663 | target_has_pending_events () | |
2664 | { | |
2665 | return current_inferior ()->top_target ()->has_pending_events (); | |
2666 | } | |
2667 | ||
2455069d | 2668 | void |
adc6a863 | 2669 | target_pass_signals (gdb::array_view<const unsigned char> pass_signals) |
2455069d | 2670 | { |
328d42d8 | 2671 | current_inferior ()->top_target ()->pass_signals (pass_signals); |
2455069d UW |
2672 | } |
2673 | ||
9b224c5e | 2674 | void |
adc6a863 | 2675 | target_program_signals (gdb::array_view<const unsigned char> program_signals) |
9b224c5e | 2676 | { |
328d42d8 | 2677 | current_inferior ()->top_target ()->program_signals (program_signals); |
9b224c5e PA |
2678 | } |
2679 | ||
e97007b6 | 2680 | static void |
82d1f134 SM |
2681 | default_follow_fork (struct target_ops *self, inferior *child_inf, |
2682 | ptid_t child_ptid, target_waitkind fork_kind, | |
2683 | bool follow_child, bool detach_fork) | |
098dba18 TT |
2684 | { |
2685 | /* Some target returned a fork event, but did not know how to follow it. */ | |
f34652de | 2686 | internal_error (_("could not find a target to follow fork")); |
098dba18 TT |
2687 | } |
2688 | ||
0d36baa9 PA |
2689 | static void |
2690 | default_follow_clone (struct target_ops *self, ptid_t child_ptid) | |
2691 | { | |
2692 | /* Some target returned a clone event, but did not know how to follow it. */ | |
2693 | internal_error (_("could not find a target to follow clone")); | |
2694 | } | |
2695 | ||
e97007b6 | 2696 | /* See target.h. */ |
ee057212 | 2697 | |
e97007b6 | 2698 | void |
82d1f134 SM |
2699 | target_follow_fork (inferior *child_inf, ptid_t child_ptid, |
2700 | target_waitkind fork_kind, bool follow_child, | |
2701 | bool detach_fork) | |
ee057212 | 2702 | { |
328d42d8 SM |
2703 | target_ops *target = current_inferior ()->top_target (); |
2704 | ||
82d1f134 SM |
2705 | /* Check consistency between CHILD_INF, CHILD_PTID, FOLLOW_CHILD and |
2706 | DETACH_FORK. */ | |
2707 | if (child_inf != nullptr) | |
2708 | { | |
2709 | gdb_assert (follow_child || !detach_fork); | |
2710 | gdb_assert (child_inf->pid == child_ptid.pid ()); | |
2711 | } | |
2712 | else | |
2713 | gdb_assert (!follow_child && detach_fork); | |
2714 | ||
2715 | return target->follow_fork (child_inf, child_ptid, fork_kind, follow_child, | |
2716 | detach_fork); | |
ee057212 DJ |
2717 | } |
2718 | ||
294c36eb | 2719 | /* See target.h. */ |
94585166 DB |
2720 | |
2721 | void | |
294c36eb SM |
2722 | target_follow_exec (inferior *follow_inf, ptid_t ptid, |
2723 | const char *execd_pathname) | |
94585166 | 2724 | { |
294c36eb SM |
2725 | current_inferior ()->top_target ()->follow_exec (follow_inf, ptid, |
2726 | execd_pathname); | |
94585166 DB |
2727 | } |
2728 | ||
8d657035 TT |
2729 | static void |
2730 | default_mourn_inferior (struct target_ops *self) | |
2731 | { | |
f34652de | 2732 | internal_error (_("could not find a target to follow mourn inferior")); |
8d657035 TT |
2733 | } |
2734 | ||
136d6dae | 2735 | void |
bc1e6c81 | 2736 | target_mourn_inferior (ptid_t ptid) |
136d6dae | 2737 | { |
dffdd8b5 | 2738 | gdb_assert (ptid.pid () == inferior_ptid.pid ()); |
328d42d8 | 2739 | current_inferior ()->top_target ()->mourn_inferior (); |
136d6dae VP |
2740 | } |
2741 | ||
424163ea DJ |
2742 | /* Look for a target which can describe architectural features, starting |
2743 | from TARGET. If we find one, return its description. */ | |
2744 | ||
2745 | const struct target_desc * | |
2746 | target_read_description (struct target_ops *target) | |
2747 | { | |
f6ac5f3d | 2748 | return target->read_description (); |
424163ea DJ |
2749 | } |
2750 | ||
08388c79 | 2751 | |
58a5184e TT |
2752 | /* Default implementation of memory-searching. */ |
2753 | ||
2754 | static int | |
2755 | default_search_memory (struct target_ops *self, | |
2756 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2757 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2758 | CORE_ADDR *found_addrp) | |
2759 | { | |
4a72de73 TT |
2760 | auto read_memory = [=] (CORE_ADDR addr, gdb_byte *result, size_t len) |
2761 | { | |
328d42d8 SM |
2762 | return target_read (current_inferior ()->top_target (), |
2763 | TARGET_OBJECT_MEMORY, NULL, | |
4a72de73 TT |
2764 | result, addr, len) == len; |
2765 | }; | |
2766 | ||
58a5184e | 2767 | /* Start over from the top of the target stack. */ |
4a72de73 | 2768 | return simple_search_memory (read_memory, start_addr, search_space_len, |
58a5184e TT |
2769 | pattern, pattern_len, found_addrp); |
2770 | } | |
2771 | ||
08388c79 DE |
2772 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the |
2773 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2774 | ||
2775 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2776 | requiring halting of the search (e.g. memory read error). | |
2777 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2778 | ||
2779 | int | |
2780 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2781 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2782 | CORE_ADDR *found_addrp) | |
2783 | { | |
328d42d8 SM |
2784 | target_ops *target = current_inferior ()->top_target (); |
2785 | ||
2786 | return target->search_memory (start_addr, search_space_len, pattern, | |
2787 | pattern_len, found_addrp); | |
08388c79 DE |
2788 | } |
2789 | ||
8edfe269 DJ |
2790 | /* Look through the currently pushed targets. If none of them will |
2791 | be able to restart the currently running process, issue an error | |
2792 | message. */ | |
2793 | ||
2794 | void | |
2795 | target_require_runnable (void) | |
2796 | { | |
328d42d8 SM |
2797 | for (target_ops *t = current_inferior ()->top_target (); |
2798 | t != NULL; | |
2799 | t = t->beneath ()) | |
8edfe269 DJ |
2800 | { |
2801 | /* If this target knows how to create a new program, then | |
2802 | assume we will still be able to after killing the current | |
2803 | one. Either killing and mourning will not pop T, or else | |
2804 | find_default_run_target will find it again. */ | |
f6ac5f3d | 2805 | if (t->can_create_inferior ()) |
8edfe269 DJ |
2806 | return; |
2807 | ||
548740d6 | 2808 | /* Do not worry about targets at certain strata that can not |
8edfe269 DJ |
2809 | create inferiors. Assume they will be pushed again if |
2810 | necessary, and continue to the process_stratum. */ | |
66b4deae | 2811 | if (t->stratum () > process_stratum) |
8edfe269 DJ |
2812 | continue; |
2813 | ||
3e43a32a MS |
2814 | error (_("The \"%s\" target does not support \"run\". " |
2815 | "Try \"help target\" or \"continue\"."), | |
f6ac5f3d | 2816 | t->shortname ()); |
8edfe269 DJ |
2817 | } |
2818 | ||
2819 | /* This function is only called if the target is running. In that | |
2820 | case there should have been a process_stratum target and it | |
c378eb4e | 2821 | should either know how to create inferiors, or not... */ |
f34652de | 2822 | internal_error (_("No targets found")); |
8edfe269 DJ |
2823 | } |
2824 | ||
6a3cb8e8 PA |
2825 | /* Whether GDB is allowed to fall back to the default run target for |
2826 | "run", "attach", etc. when no target is connected yet. */ | |
491144b5 | 2827 | static bool auto_connect_native_target = true; |
6a3cb8e8 PA |
2828 | |
2829 | static void | |
2830 | show_auto_connect_native_target (struct ui_file *file, int from_tty, | |
2831 | struct cmd_list_element *c, const char *value) | |
2832 | { | |
6cb06a8c TT |
2833 | gdb_printf (file, |
2834 | _("Whether GDB may automatically connect to the " | |
2835 | "native target is %s.\n"), | |
2836 | value); | |
6a3cb8e8 PA |
2837 | } |
2838 | ||
d9f719f1 PA |
2839 | /* A pointer to the target that can respond to "run" or "attach". |
2840 | Native targets are always singletons and instantiated early at GDB | |
2841 | startup. */ | |
2842 | static target_ops *the_native_target; | |
2843 | ||
2844 | /* See target.h. */ | |
2845 | ||
2846 | void | |
2847 | set_native_target (target_ops *target) | |
2848 | { | |
2849 | if (the_native_target != NULL) | |
f34652de | 2850 | internal_error (_("native target already set (\"%s\")."), |
d9f719f1 PA |
2851 | the_native_target->longname ()); |
2852 | ||
2853 | the_native_target = target; | |
2854 | } | |
2855 | ||
2856 | /* See target.h. */ | |
2857 | ||
2858 | target_ops * | |
2859 | get_native_target () | |
2860 | { | |
2861 | return the_native_target; | |
2862 | } | |
2863 | ||
c906108c SS |
2864 | /* Look through the list of possible targets for a target that can |
2865 | execute a run or attach command without any other data. This is | |
2866 | used to locate the default process stratum. | |
2867 | ||
5f667f2d PA |
2868 | If DO_MESG is not NULL, the result is always valid (error() is |
2869 | called for errors); else, return NULL on error. */ | |
c906108c SS |
2870 | |
2871 | static struct target_ops * | |
a121b7c1 | 2872 | find_default_run_target (const char *do_mesg) |
c906108c | 2873 | { |
d9f719f1 PA |
2874 | if (auto_connect_native_target && the_native_target != NULL) |
2875 | return the_native_target; | |
c906108c | 2876 | |
d9f719f1 PA |
2877 | if (do_mesg != NULL) |
2878 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
2879 | return NULL; | |
c906108c SS |
2880 | } |
2881 | ||
b3ccfe11 | 2882 | /* See target.h. */ |
c906108c | 2883 | |
b3ccfe11 TT |
2884 | struct target_ops * |
2885 | find_attach_target (void) | |
c906108c | 2886 | { |
b3ccfe11 | 2887 | /* If a target on the current stack can attach, use it. */ |
328d42d8 SM |
2888 | for (target_ops *t = current_inferior ()->top_target (); |
2889 | t != NULL; | |
2890 | t = t->beneath ()) | |
b3ccfe11 | 2891 | { |
f6ac5f3d | 2892 | if (t->can_attach ()) |
d9f719f1 | 2893 | return t; |
b3ccfe11 | 2894 | } |
c906108c | 2895 | |
b3ccfe11 | 2896 | /* Otherwise, use the default run target for attaching. */ |
d9f719f1 | 2897 | return find_default_run_target ("attach"); |
b84876c2 PA |
2898 | } |
2899 | ||
b3ccfe11 | 2900 | /* See target.h. */ |
b84876c2 | 2901 | |
b3ccfe11 TT |
2902 | struct target_ops * |
2903 | find_run_target (void) | |
9908b566 | 2904 | { |
f6ac5f3d | 2905 | /* If a target on the current stack can run, use it. */ |
328d42d8 SM |
2906 | for (target_ops *t = current_inferior ()->top_target (); |
2907 | t != NULL; | |
2908 | t = t->beneath ()) | |
b3ccfe11 | 2909 | { |
f6ac5f3d | 2910 | if (t->can_create_inferior ()) |
d9f719f1 | 2911 | return t; |
b3ccfe11 | 2912 | } |
5d502164 | 2913 | |
b3ccfe11 | 2914 | /* Otherwise, use the default run target. */ |
d9f719f1 | 2915 | return find_default_run_target ("run"); |
9908b566 VP |
2916 | } |
2917 | ||
f6ac5f3d PA |
2918 | bool |
2919 | target_ops::info_proc (const char *args, enum info_proc_what what) | |
2920 | { | |
2921 | return false; | |
2922 | } | |
2923 | ||
145b16a9 UW |
2924 | /* Implement the "info proc" command. */ |
2925 | ||
451b7c33 | 2926 | int |
7bc112c1 | 2927 | target_info_proc (const char *args, enum info_proc_what what) |
145b16a9 UW |
2928 | { |
2929 | struct target_ops *t; | |
2930 | ||
2931 | /* If we're already connected to something that can get us OS | |
2932 | related data, use it. Otherwise, try using the native | |
2933 | target. */ | |
f6ac5f3d PA |
2934 | t = find_target_at (process_stratum); |
2935 | if (t == NULL) | |
145b16a9 UW |
2936 | t = find_default_run_target (NULL); |
2937 | ||
b6a8c27b | 2938 | for (; t != NULL; t = t->beneath ()) |
145b16a9 | 2939 | { |
f6ac5f3d | 2940 | if (t->info_proc (args, what)) |
145b16a9 | 2941 | { |
145b16a9 | 2942 | if (targetdebug) |
6cb06a8c TT |
2943 | gdb_printf (gdb_stdlog, |
2944 | "target_info_proc (\"%s\", %d)\n", args, what); | |
145b16a9 | 2945 | |
451b7c33 | 2946 | return 1; |
145b16a9 UW |
2947 | } |
2948 | } | |
2949 | ||
451b7c33 | 2950 | return 0; |
145b16a9 UW |
2951 | } |
2952 | ||
03583c20 | 2953 | static int |
2bfc0540 | 2954 | find_default_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
2955 | { |
2956 | struct target_ops *t; | |
2957 | ||
2958 | t = find_default_run_target (NULL); | |
f6ac5f3d PA |
2959 | if (t != NULL) |
2960 | return t->supports_disable_randomization (); | |
03583c20 UW |
2961 | return 0; |
2962 | } | |
2963 | ||
2964 | int | |
2965 | target_supports_disable_randomization (void) | |
2966 | { | |
328d42d8 | 2967 | return current_inferior ()->top_target ()->supports_disable_randomization (); |
03583c20 | 2968 | } |
9908b566 | 2969 | |
1fb77080 SDJ |
2970 | /* See target/target.h. */ |
2971 | ||
2972 | int | |
2973 | target_supports_multi_process (void) | |
2974 | { | |
328d42d8 | 2975 | return current_inferior ()->top_target ()->supports_multi_process (); |
1fb77080 SDJ |
2976 | } |
2977 | ||
b7b030ad TT |
2978 | /* See target.h. */ |
2979 | ||
9018be22 | 2980 | gdb::optional<gdb::char_vector> |
07e059b5 VP |
2981 | target_get_osdata (const char *type) |
2982 | { | |
07e059b5 VP |
2983 | struct target_ops *t; |
2984 | ||
739ef7fb PA |
2985 | /* If we're already connected to something that can get us OS |
2986 | related data, use it. Otherwise, try using the native | |
2987 | target. */ | |
f6ac5f3d PA |
2988 | t = find_target_at (process_stratum); |
2989 | if (t == NULL) | |
739ef7fb | 2990 | t = find_default_run_target ("get OS data"); |
07e059b5 VP |
2991 | |
2992 | if (!t) | |
9018be22 | 2993 | return {}; |
07e059b5 | 2994 | |
6d097e65 | 2995 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
2996 | } |
2997 | ||
b6a8c27b PA |
2998 | /* See target.h. */ |
2999 | ||
3000 | target_ops * | |
3001 | target_ops::beneath () const | |
3002 | { | |
5b6d1e4f | 3003 | return current_inferior ()->find_target_beneath (this); |
b6a8c27b PA |
3004 | } |
3005 | ||
f6ac5f3d PA |
3006 | void |
3007 | target_ops::close () | |
3008 | { | |
3009 | } | |
3010 | ||
3011 | bool | |
3012 | target_ops::can_attach () | |
3013 | { | |
3014 | return 0; | |
3015 | } | |
3016 | ||
3017 | void | |
3018 | target_ops::attach (const char *, int) | |
3019 | { | |
3020 | gdb_assert_not_reached ("target_ops::attach called"); | |
3021 | } | |
3022 | ||
3023 | bool | |
3024 | target_ops::can_create_inferior () | |
3025 | { | |
3026 | return 0; | |
3027 | } | |
3028 | ||
3029 | void | |
3030 | target_ops::create_inferior (const char *, const std::string &, | |
3031 | char **, int) | |
3032 | { | |
3033 | gdb_assert_not_reached ("target_ops::create_inferior called"); | |
3034 | } | |
3035 | ||
57810aa7 | 3036 | bool |
f6ac5f3d PA |
3037 | target_ops::can_run () |
3038 | { | |
57810aa7 | 3039 | return false; |
f6ac5f3d PA |
3040 | } |
3041 | ||
3042 | int | |
3043 | target_can_run () | |
3044 | { | |
328d42d8 SM |
3045 | for (target_ops *t = current_inferior ()->top_target (); |
3046 | t != NULL; | |
3047 | t = t->beneath ()) | |
f6ac5f3d PA |
3048 | { |
3049 | if (t->can_run ()) | |
3050 | return 1; | |
3051 | } | |
3052 | ||
3053 | return 0; | |
3054 | } | |
7313baad UW |
3055 | |
3056 | /* Target file operations. */ | |
3057 | ||
3058 | static struct target_ops * | |
3059 | default_fileio_target (void) | |
3060 | { | |
f6ac5f3d PA |
3061 | struct target_ops *t; |
3062 | ||
7313baad UW |
3063 | /* If we're already connected to something that can perform |
3064 | file I/O, use it. Otherwise, try using the native target. */ | |
f6ac5f3d PA |
3065 | t = find_target_at (process_stratum); |
3066 | if (t != NULL) | |
3067 | return t; | |
3068 | return find_default_run_target ("file I/O"); | |
7313baad UW |
3069 | } |
3070 | ||
1c4b552b GB |
3071 | /* File handle for target file operations. */ |
3072 | ||
5ff79300 | 3073 | struct fileio_fh_t |
1c4b552b | 3074 | { |
20db9c52 PA |
3075 | /* The target on which this file is open. NULL if the target is |
3076 | meanwhile closed while the handle is open. */ | |
5ff79300 | 3077 | target_ops *target; |
1c4b552b GB |
3078 | |
3079 | /* The file descriptor on the target. */ | |
5ff79300 | 3080 | int target_fd; |
1c4b552b | 3081 | |
5ff79300 PA |
3082 | /* Check whether this fileio_fh_t represents a closed file. */ |
3083 | bool is_closed () | |
3084 | { | |
3085 | return target_fd < 0; | |
3086 | } | |
3087 | }; | |
1c4b552b GB |
3088 | |
3089 | /* Vector of currently open file handles. The value returned by | |
3090 | target_fileio_open and passed as the FD argument to other | |
3091 | target_fileio_* functions is an index into this vector. This | |
3092 | vector's entries are never freed; instead, files are marked as | |
3093 | closed, and the handle becomes available for reuse. */ | |
5ff79300 | 3094 | static std::vector<fileio_fh_t> fileio_fhandles; |
1c4b552b GB |
3095 | |
3096 | /* Index into fileio_fhandles of the lowest handle that might be | |
3097 | closed. This permits handle reuse without searching the whole | |
3098 | list each time a new file is opened. */ | |
3099 | static int lowest_closed_fd; | |
3100 | ||
d7cb0ef3 | 3101 | /* See target.h. */ |
20db9c52 | 3102 | |
d7cb0ef3 | 3103 | void |
20db9c52 PA |
3104 | fileio_handles_invalidate_target (target_ops *targ) |
3105 | { | |
3106 | for (fileio_fh_t &fh : fileio_fhandles) | |
3107 | if (fh.target == targ) | |
3108 | fh.target = NULL; | |
3109 | } | |
3110 | ||
1c4b552b GB |
3111 | /* Acquire a target fileio file descriptor. */ |
3112 | ||
3113 | static int | |
5ff79300 | 3114 | acquire_fileio_fd (target_ops *target, int target_fd) |
1c4b552b | 3115 | { |
1c4b552b | 3116 | /* Search for closed handles to reuse. */ |
5ff79300 PA |
3117 | for (; lowest_closed_fd < fileio_fhandles.size (); lowest_closed_fd++) |
3118 | { | |
3119 | fileio_fh_t &fh = fileio_fhandles[lowest_closed_fd]; | |
3120 | ||
3121 | if (fh.is_closed ()) | |
3122 | break; | |
3123 | } | |
1c4b552b GB |
3124 | |
3125 | /* Push a new handle if no closed handles were found. */ | |
5ff79300 PA |
3126 | if (lowest_closed_fd == fileio_fhandles.size ()) |
3127 | fileio_fhandles.push_back (fileio_fh_t {target, target_fd}); | |
3128 | else | |
3129 | fileio_fhandles[lowest_closed_fd] = {target, target_fd}; | |
1c4b552b | 3130 | |
5ff79300 PA |
3131 | /* Should no longer be marked closed. */ |
3132 | gdb_assert (!fileio_fhandles[lowest_closed_fd].is_closed ()); | |
1c4b552b GB |
3133 | |
3134 | /* Return its index, and start the next lookup at | |
3135 | the next index. */ | |
3136 | return lowest_closed_fd++; | |
3137 | } | |
3138 | ||
3139 | /* Release a target fileio file descriptor. */ | |
3140 | ||
3141 | static void | |
3142 | release_fileio_fd (int fd, fileio_fh_t *fh) | |
3143 | { | |
5ff79300 | 3144 | fh->target_fd = -1; |
325fac50 | 3145 | lowest_closed_fd = std::min (lowest_closed_fd, fd); |
1c4b552b GB |
3146 | } |
3147 | ||
3148 | /* Return a pointer to the fileio_fhandle_t corresponding to FD. */ | |
3149 | ||
5ff79300 PA |
3150 | static fileio_fh_t * |
3151 | fileio_fd_to_fh (int fd) | |
3152 | { | |
3153 | return &fileio_fhandles[fd]; | |
3154 | } | |
1c4b552b | 3155 | |
f6ac5f3d PA |
3156 | |
3157 | /* Default implementations of file i/o methods. We don't want these | |
3158 | to delegate automatically, because we need to know which target | |
3159 | supported the method, in order to call it directly from within | |
3160 | pread/pwrite, etc. */ | |
3161 | ||
3162 | int | |
3163 | target_ops::fileio_open (struct inferior *inf, const char *filename, | |
3164 | int flags, int mode, int warn_if_slow, | |
b872057a | 3165 | fileio_error *target_errno) |
f6ac5f3d PA |
3166 | { |
3167 | *target_errno = FILEIO_ENOSYS; | |
3168 | return -1; | |
3169 | } | |
3170 | ||
3171 | int | |
3172 | target_ops::fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
b872057a | 3173 | ULONGEST offset, fileio_error *target_errno) |
f6ac5f3d PA |
3174 | { |
3175 | *target_errno = FILEIO_ENOSYS; | |
3176 | return -1; | |
3177 | } | |
3178 | ||
3179 | int | |
3180 | target_ops::fileio_pread (int fd, gdb_byte *read_buf, int len, | |
b872057a | 3181 | ULONGEST offset, fileio_error *target_errno) |
f6ac5f3d PA |
3182 | { |
3183 | *target_errno = FILEIO_ENOSYS; | |
3184 | return -1; | |
3185 | } | |
3186 | ||
3187 | int | |
b872057a | 3188 | target_ops::fileio_fstat (int fd, struct stat *sb, fileio_error *target_errno) |
f6ac5f3d PA |
3189 | { |
3190 | *target_errno = FILEIO_ENOSYS; | |
3191 | return -1; | |
3192 | } | |
3193 | ||
3194 | int | |
b872057a | 3195 | target_ops::fileio_close (int fd, fileio_error *target_errno) |
f6ac5f3d PA |
3196 | { |
3197 | *target_errno = FILEIO_ENOSYS; | |
3198 | return -1; | |
3199 | } | |
3200 | ||
3201 | int | |
3202 | target_ops::fileio_unlink (struct inferior *inf, const char *filename, | |
b872057a | 3203 | fileio_error *target_errno) |
f6ac5f3d PA |
3204 | { |
3205 | *target_errno = FILEIO_ENOSYS; | |
3206 | return -1; | |
3207 | } | |
3208 | ||
3209 | gdb::optional<std::string> | |
3210 | target_ops::fileio_readlink (struct inferior *inf, const char *filename, | |
b872057a | 3211 | fileio_error *target_errno) |
f6ac5f3d PA |
3212 | { |
3213 | *target_errno = FILEIO_ENOSYS; | |
3214 | return {}; | |
3215 | } | |
3216 | ||
4111f652 | 3217 | /* See target.h. */ |
12e2a5fd | 3218 | |
4111f652 PA |
3219 | int |
3220 | target_fileio_open (struct inferior *inf, const char *filename, | |
b872057a | 3221 | int flags, int mode, bool warn_if_slow, fileio_error *target_errno) |
7313baad | 3222 | { |
b6a8c27b | 3223 | for (target_ops *t = default_fileio_target (); t != NULL; t = t->beneath ()) |
7313baad | 3224 | { |
f6ac5f3d PA |
3225 | int fd = t->fileio_open (inf, filename, flags, mode, |
3226 | warn_if_slow, target_errno); | |
7313baad | 3227 | |
f6ac5f3d PA |
3228 | if (fd == -1 && *target_errno == FILEIO_ENOSYS) |
3229 | continue; | |
1c4b552b | 3230 | |
f6ac5f3d PA |
3231 | if (fd < 0) |
3232 | fd = -1; | |
3233 | else | |
3234 | fd = acquire_fileio_fd (t, fd); | |
3235 | ||
3236 | if (targetdebug) | |
6cb06a8c TT |
3237 | gdb_printf (gdb_stdlog, |
3238 | "target_fileio_open (%d,%s,0x%x,0%o,%d)" | |
3239 | " = %d (%d)\n", | |
3240 | inf == NULL ? 0 : inf->num, | |
3241 | filename, flags, mode, | |
3242 | warn_if_slow, fd, | |
3243 | fd != -1 ? 0 : *target_errno); | |
f6ac5f3d | 3244 | return fd; |
7313baad UW |
3245 | } |
3246 | ||
3247 | *target_errno = FILEIO_ENOSYS; | |
3248 | return -1; | |
3249 | } | |
3250 | ||
12e2a5fd GB |
3251 | /* See target.h. */ |
3252 | ||
7313baad UW |
3253 | int |
3254 | target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
b872057a | 3255 | ULONGEST offset, fileio_error *target_errno) |
7313baad | 3256 | { |
1c4b552b GB |
3257 | fileio_fh_t *fh = fileio_fd_to_fh (fd); |
3258 | int ret = -1; | |
7313baad | 3259 | |
5ff79300 | 3260 | if (fh->is_closed ()) |
b872057a | 3261 | *target_errno = FILEIO_EBADF; |
20db9c52 | 3262 | else if (fh->target == NULL) |
b872057a | 3263 | *target_errno = FILEIO_EIO; |
1c4b552b | 3264 | else |
f6ac5f3d PA |
3265 | ret = fh->target->fileio_pwrite (fh->target_fd, write_buf, |
3266 | len, offset, target_errno); | |
7313baad | 3267 | |
1c4b552b | 3268 | if (targetdebug) |
6cb06a8c TT |
3269 | gdb_printf (gdb_stdlog, |
3270 | "target_fileio_pwrite (%d,...,%d,%s) " | |
3271 | "= %d (%d)\n", | |
3272 | fd, len, pulongest (offset), | |
3273 | ret, ret != -1 ? 0 : *target_errno); | |
1c4b552b | 3274 | return ret; |
7313baad UW |
3275 | } |
3276 | ||
12e2a5fd GB |
3277 | /* See target.h. */ |
3278 | ||
7313baad UW |
3279 | int |
3280 | target_fileio_pread (int fd, gdb_byte *read_buf, int len, | |
b872057a | 3281 | ULONGEST offset, fileio_error *target_errno) |
7313baad | 3282 | { |
1c4b552b GB |
3283 | fileio_fh_t *fh = fileio_fd_to_fh (fd); |
3284 | int ret = -1; | |
7313baad | 3285 | |
5ff79300 | 3286 | if (fh->is_closed ()) |
b872057a | 3287 | *target_errno = FILEIO_EBADF; |
20db9c52 | 3288 | else if (fh->target == NULL) |
b872057a | 3289 | *target_errno = FILEIO_EIO; |
1c4b552b | 3290 | else |
f6ac5f3d PA |
3291 | ret = fh->target->fileio_pread (fh->target_fd, read_buf, |
3292 | len, offset, target_errno); | |
7313baad | 3293 | |
1c4b552b | 3294 | if (targetdebug) |
6cb06a8c TT |
3295 | gdb_printf (gdb_stdlog, |
3296 | "target_fileio_pread (%d,...,%d,%s) " | |
3297 | "= %d (%d)\n", | |
3298 | fd, len, pulongest (offset), | |
3299 | ret, ret != -1 ? 0 : *target_errno); | |
9b15c1f0 GB |
3300 | return ret; |
3301 | } | |
3302 | ||
3303 | /* See target.h. */ | |
12e2a5fd | 3304 | |
9b15c1f0 | 3305 | int |
b872057a | 3306 | target_fileio_fstat (int fd, struct stat *sb, fileio_error *target_errno) |
9b15c1f0 GB |
3307 | { |
3308 | fileio_fh_t *fh = fileio_fd_to_fh (fd); | |
3309 | int ret = -1; | |
3310 | ||
5ff79300 | 3311 | if (fh->is_closed ()) |
b872057a | 3312 | *target_errno = FILEIO_EBADF; |
20db9c52 | 3313 | else if (fh->target == NULL) |
b872057a | 3314 | *target_errno = FILEIO_EIO; |
9b15c1f0 | 3315 | else |
f6ac5f3d | 3316 | ret = fh->target->fileio_fstat (fh->target_fd, sb, target_errno); |
9b15c1f0 GB |
3317 | |
3318 | if (targetdebug) | |
6cb06a8c TT |
3319 | gdb_printf (gdb_stdlog, |
3320 | "target_fileio_fstat (%d) = %d (%d)\n", | |
3321 | fd, ret, ret != -1 ? 0 : *target_errno); | |
1c4b552b | 3322 | return ret; |
7313baad UW |
3323 | } |
3324 | ||
12e2a5fd GB |
3325 | /* See target.h. */ |
3326 | ||
7313baad | 3327 | int |
b872057a | 3328 | target_fileio_close (int fd, fileio_error *target_errno) |
7313baad | 3329 | { |
1c4b552b GB |
3330 | fileio_fh_t *fh = fileio_fd_to_fh (fd); |
3331 | int ret = -1; | |
7313baad | 3332 | |
5ff79300 | 3333 | if (fh->is_closed ()) |
b872057a | 3334 | *target_errno = FILEIO_EBADF; |
1c4b552b | 3335 | else |
7313baad | 3336 | { |
20db9c52 | 3337 | if (fh->target != NULL) |
f6ac5f3d PA |
3338 | ret = fh->target->fileio_close (fh->target_fd, |
3339 | target_errno); | |
20db9c52 PA |
3340 | else |
3341 | ret = 0; | |
1c4b552b | 3342 | release_fileio_fd (fd, fh); |
7313baad UW |
3343 | } |
3344 | ||
1c4b552b | 3345 | if (targetdebug) |
6cb06a8c TT |
3346 | gdb_printf (gdb_stdlog, |
3347 | "target_fileio_close (%d) = %d (%d)\n", | |
3348 | fd, ret, ret != -1 ? 0 : *target_errno); | |
1c4b552b | 3349 | return ret; |
7313baad UW |
3350 | } |
3351 | ||
12e2a5fd GB |
3352 | /* See target.h. */ |
3353 | ||
7313baad | 3354 | int |
07c138c8 | 3355 | target_fileio_unlink (struct inferior *inf, const char *filename, |
b872057a | 3356 | fileio_error *target_errno) |
7313baad | 3357 | { |
b6a8c27b | 3358 | for (target_ops *t = default_fileio_target (); t != NULL; t = t->beneath ()) |
7313baad | 3359 | { |
f6ac5f3d | 3360 | int ret = t->fileio_unlink (inf, filename, target_errno); |
7313baad | 3361 | |
f6ac5f3d PA |
3362 | if (ret == -1 && *target_errno == FILEIO_ENOSYS) |
3363 | continue; | |
3364 | ||
3365 | if (targetdebug) | |
6cb06a8c TT |
3366 | gdb_printf (gdb_stdlog, |
3367 | "target_fileio_unlink (%d,%s)" | |
3368 | " = %d (%d)\n", | |
3369 | inf == NULL ? 0 : inf->num, filename, | |
3370 | ret, ret != -1 ? 0 : *target_errno); | |
f6ac5f3d | 3371 | return ret; |
7313baad UW |
3372 | } |
3373 | ||
3374 | *target_errno = FILEIO_ENOSYS; | |
3375 | return -1; | |
3376 | } | |
3377 | ||
12e2a5fd GB |
3378 | /* See target.h. */ |
3379 | ||
e0d3522b | 3380 | gdb::optional<std::string> |
07c138c8 | 3381 | target_fileio_readlink (struct inferior *inf, const char *filename, |
b872057a | 3382 | fileio_error *target_errno) |
b9e7b9c3 | 3383 | { |
b6a8c27b | 3384 | for (target_ops *t = default_fileio_target (); t != NULL; t = t->beneath ()) |
b9e7b9c3 | 3385 | { |
f6ac5f3d PA |
3386 | gdb::optional<std::string> ret |
3387 | = t->fileio_readlink (inf, filename, target_errno); | |
b9e7b9c3 | 3388 | |
f6ac5f3d PA |
3389 | if (!ret.has_value () && *target_errno == FILEIO_ENOSYS) |
3390 | continue; | |
3391 | ||
3392 | if (targetdebug) | |
6cb06a8c TT |
3393 | gdb_printf (gdb_stdlog, |
3394 | "target_fileio_readlink (%d,%s)" | |
3395 | " = %s (%d)\n", | |
3396 | inf == NULL ? 0 : inf->num, | |
3397 | filename, ret ? ret->c_str () : "(nil)", | |
3398 | ret ? 0 : *target_errno); | |
f6ac5f3d | 3399 | return ret; |
b9e7b9c3 UW |
3400 | } |
3401 | ||
3402 | *target_errno = FILEIO_ENOSYS; | |
e0d3522b | 3403 | return {}; |
b9e7b9c3 UW |
3404 | } |
3405 | ||
770623f7 TT |
3406 | /* Like scoped_fd, but specific to target fileio. */ |
3407 | ||
3408 | class scoped_target_fd | |
7313baad | 3409 | { |
770623f7 TT |
3410 | public: |
3411 | explicit scoped_target_fd (int fd) noexcept | |
3412 | : m_fd (fd) | |
3413 | { | |
3414 | } | |
7313baad | 3415 | |
770623f7 TT |
3416 | ~scoped_target_fd () |
3417 | { | |
3418 | if (m_fd >= 0) | |
3419 | { | |
b872057a | 3420 | fileio_error target_errno; |
770623f7 TT |
3421 | |
3422 | target_fileio_close (m_fd, &target_errno); | |
3423 | } | |
3424 | } | |
3425 | ||
3426 | DISABLE_COPY_AND_ASSIGN (scoped_target_fd); | |
3427 | ||
3428 | int get () const noexcept | |
3429 | { | |
3430 | return m_fd; | |
3431 | } | |
3432 | ||
3433 | private: | |
3434 | int m_fd; | |
3435 | }; | |
7313baad | 3436 | |
07c138c8 GB |
3437 | /* Read target file FILENAME, in the filesystem as seen by INF. If |
3438 | INF is NULL, use the filesystem seen by the debugger (GDB or, for | |
3439 | remote targets, the remote stub). Store the result in *BUF_P and | |
3440 | return the size of the transferred data. PADDING additional bytes | |
3441 | are available in *BUF_P. This is a helper function for | |
3442 | target_fileio_read_alloc; see the declaration of that function for | |
3443 | more information. */ | |
7313baad | 3444 | |
f7af1fcd JK |
3445 | static LONGEST |
3446 | target_fileio_read_alloc_1 (struct inferior *inf, const char *filename, | |
3447 | gdb_byte **buf_p, int padding) | |
3448 | { | |
db1ff28b JK |
3449 | size_t buf_alloc, buf_pos; |
3450 | gdb_byte *buf; | |
3451 | LONGEST n; | |
b872057a | 3452 | fileio_error target_errno; |
f7af1fcd | 3453 | |
770623f7 | 3454 | scoped_target_fd fd (target_fileio_open (inf, filename, FILEIO_O_RDONLY, |
4111f652 | 3455 | 0700, false, &target_errno)); |
770623f7 | 3456 | if (fd.get () == -1) |
f7af1fcd JK |
3457 | return -1; |
3458 | ||
db1ff28b JK |
3459 | /* Start by reading up to 4K at a time. The target will throttle |
3460 | this number down if necessary. */ | |
3461 | buf_alloc = 4096; | |
224c3ddb | 3462 | buf = (gdb_byte *) xmalloc (buf_alloc); |
db1ff28b JK |
3463 | buf_pos = 0; |
3464 | while (1) | |
3465 | { | |
770623f7 | 3466 | n = target_fileio_pread (fd.get (), &buf[buf_pos], |
db1ff28b JK |
3467 | buf_alloc - buf_pos - padding, buf_pos, |
3468 | &target_errno); | |
3469 | if (n < 0) | |
3470 | { | |
3471 | /* An error occurred. */ | |
db1ff28b JK |
3472 | xfree (buf); |
3473 | return -1; | |
3474 | } | |
3475 | else if (n == 0) | |
3476 | { | |
3477 | /* Read all there was. */ | |
db1ff28b JK |
3478 | if (buf_pos == 0) |
3479 | xfree (buf); | |
3480 | else | |
3481 | *buf_p = buf; | |
3482 | return buf_pos; | |
3483 | } | |
3484 | ||
3485 | buf_pos += n; | |
3486 | ||
3487 | /* If the buffer is filling up, expand it. */ | |
3488 | if (buf_alloc < buf_pos * 2) | |
3489 | { | |
3490 | buf_alloc *= 2; | |
224c3ddb | 3491 | buf = (gdb_byte *) xrealloc (buf, buf_alloc); |
db1ff28b JK |
3492 | } |
3493 | ||
3494 | QUIT; | |
3495 | } | |
f7af1fcd JK |
3496 | } |
3497 | ||
12e2a5fd | 3498 | /* See target.h. */ |
7313baad UW |
3499 | |
3500 | LONGEST | |
07c138c8 GB |
3501 | target_fileio_read_alloc (struct inferior *inf, const char *filename, |
3502 | gdb_byte **buf_p) | |
7313baad | 3503 | { |
07c138c8 | 3504 | return target_fileio_read_alloc_1 (inf, filename, buf_p, 0); |
7313baad UW |
3505 | } |
3506 | ||
db1ff28b | 3507 | /* See target.h. */ |
f7af1fcd | 3508 | |
87028b87 | 3509 | gdb::unique_xmalloc_ptr<char> |
f7af1fcd JK |
3510 | target_fileio_read_stralloc (struct inferior *inf, const char *filename) |
3511 | { | |
db1ff28b JK |
3512 | gdb_byte *buffer; |
3513 | char *bufstr; | |
3514 | LONGEST i, transferred; | |
3515 | ||
3516 | transferred = target_fileio_read_alloc_1 (inf, filename, &buffer, 1); | |
3517 | bufstr = (char *) buffer; | |
3518 | ||
3519 | if (transferred < 0) | |
87028b87 | 3520 | return gdb::unique_xmalloc_ptr<char> (nullptr); |
db1ff28b JK |
3521 | |
3522 | if (transferred == 0) | |
b02f78f9 | 3523 | return make_unique_xstrdup (""); |
db1ff28b JK |
3524 | |
3525 | bufstr[transferred] = 0; | |
3526 | ||
3527 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
3528 | for (i = strlen (bufstr); i < transferred; i++) | |
3529 | if (bufstr[i] != 0) | |
3530 | { | |
3531 | warning (_("target file %s " | |
3532 | "contained unexpected null characters"), | |
3533 | filename); | |
3534 | break; | |
3535 | } | |
3536 | ||
87028b87 | 3537 | return gdb::unique_xmalloc_ptr<char> (bufstr); |
f7af1fcd | 3538 | } |
7313baad | 3539 | |
db1ff28b | 3540 | |
e0d24f8d | 3541 | static int |
31568a15 TT |
3542 | default_region_ok_for_hw_watchpoint (struct target_ops *self, |
3543 | CORE_ADDR addr, int len) | |
e0d24f8d | 3544 | { |
99d9c3b9 SM |
3545 | gdbarch *arch = current_inferior ()->arch (); |
3546 | return (len <= gdbarch_ptr_bit (arch) / TARGET_CHAR_BIT); | |
ccaa32c7 GS |
3547 | } |
3548 | ||
5009afc5 AS |
3549 | static int |
3550 | default_watchpoint_addr_within_range (struct target_ops *target, | |
3551 | CORE_ADDR addr, | |
3552 | CORE_ADDR start, int length) | |
3553 | { | |
3554 | return addr >= start && addr < start + length; | |
3555 | } | |
3556 | ||
8b06beed TT |
3557 | /* See target.h. */ |
3558 | ||
a1740ee1 PA |
3559 | target_ops * |
3560 | target_stack::find_beneath (const target_ops *t) const | |
8b06beed | 3561 | { |
a1740ee1 | 3562 | /* Look for a non-empty slot at stratum levels beneath T's. */ |
66b4deae | 3563 | for (int stratum = t->stratum () - 1; stratum >= 0; --stratum) |
91e3d1d1 AB |
3564 | if (m_stack[stratum].get () != NULL) |
3565 | return m_stack[stratum].get (); | |
8b06beed TT |
3566 | |
3567 | return NULL; | |
3568 | } | |
3569 | ||
a1740ee1 PA |
3570 | /* See target.h. */ |
3571 | ||
3572 | struct target_ops * | |
3573 | find_target_at (enum strata stratum) | |
3574 | { | |
5b6d1e4f | 3575 | return current_inferior ()->target_at (stratum); |
a1740ee1 PA |
3576 | } |
3577 | ||
c906108c | 3578 | \f |
0f48b757 PA |
3579 | |
3580 | /* See target.h */ | |
3581 | ||
3582 | void | |
3583 | target_announce_detach (int from_tty) | |
3584 | { | |
3585 | pid_t pid; | |
a121b7c1 | 3586 | const char *exec_file; |
0f48b757 PA |
3587 | |
3588 | if (!from_tty) | |
3589 | return; | |
3590 | ||
e99b03dc | 3591 | pid = inferior_ptid.pid (); |
41e321a8 TT |
3592 | exec_file = get_exec_file (0); |
3593 | if (exec_file == nullptr) | |
6cb06a8c TT |
3594 | gdb_printf ("Detaching from pid %s\n", |
3595 | target_pid_to_str (ptid_t (pid)).c_str ()); | |
41e321a8 | 3596 | else |
6cb06a8c TT |
3597 | gdb_printf (_("Detaching from program: %s, %s\n"), exec_file, |
3598 | target_pid_to_str (ptid_t (pid)).c_str ()); | |
bc521517 TT |
3599 | } |
3600 | ||
3601 | /* See target.h */ | |
3602 | ||
3603 | void | |
3604 | target_announce_attach (int from_tty, int pid) | |
3605 | { | |
3606 | if (!from_tty) | |
3607 | return; | |
3608 | ||
3609 | const char *exec_file = get_exec_file (0); | |
3610 | ||
249f1cf8 | 3611 | if (exec_file != nullptr) |
6cb06a8c TT |
3612 | gdb_printf ("Attaching to program: %s, %s\n", exec_file, |
3613 | target_pid_to_str (ptid_t (pid)).c_str ()); | |
bc521517 | 3614 | else |
6cb06a8c TT |
3615 | gdb_printf ("Attaching to %s\n", |
3616 | target_pid_to_str (ptid_t (pid)).c_str ()); | |
0f48b757 PA |
3617 | } |
3618 | ||
c906108c SS |
3619 | /* The inferior process has died. Long live the inferior! */ |
3620 | ||
3621 | void | |
fba45db2 | 3622 | generic_mourn_inferior (void) |
c906108c | 3623 | { |
00431a78 | 3624 | inferior *inf = current_inferior (); |
c906108c | 3625 | |
a0776b13 | 3626 | switch_to_no_thread (); |
7f9f62ba | 3627 | |
f59f708a PA |
3628 | /* Mark breakpoints uninserted in case something tries to delete a |
3629 | breakpoint while we delete the inferior's threads (which would | |
3630 | fail, since the inferior is long gone). */ | |
3631 | mark_breakpoints_out (); | |
3632 | ||
00431a78 PA |
3633 | if (inf->pid != 0) |
3634 | exit_inferior (inf); | |
7f9f62ba | 3635 | |
f59f708a PA |
3636 | /* Note this wipes step-resume breakpoints, so needs to be done |
3637 | after exit_inferior, which ends up referencing the step-resume | |
3638 | breakpoints through clear_thread_inferior_resources. */ | |
c906108c | 3639 | breakpoint_init_inferior (inf_exited); |
f59f708a | 3640 | |
c906108c SS |
3641 | registers_changed (); |
3642 | ||
c906108c SS |
3643 | reopen_exec_file (); |
3644 | reinit_frame_cache (); | |
3645 | ||
9a4105ab AC |
3646 | if (deprecated_detach_hook) |
3647 | deprecated_detach_hook (); | |
c906108c SS |
3648 | } |
3649 | \f | |
fd0a2a6f MK |
3650 | /* Convert a normal process ID to a string. Returns the string in a |
3651 | static buffer. */ | |
c906108c | 3652 | |
a068643d | 3653 | std::string |
39f77062 | 3654 | normal_pid_to_str (ptid_t ptid) |
c906108c | 3655 | { |
a068643d | 3656 | return string_printf ("process %d", ptid.pid ()); |
c906108c SS |
3657 | } |
3658 | ||
a068643d | 3659 | static std::string |
770234d3 | 3660 | default_pid_to_str (struct target_ops *ops, ptid_t ptid) |
117de6a9 PA |
3661 | { |
3662 | return normal_pid_to_str (ptid); | |
3663 | } | |
3664 | ||
9b4eba8e HZ |
3665 | /* Error-catcher for target_find_memory_regions. */ |
3666 | static int | |
2e73927c TT |
3667 | dummy_find_memory_regions (struct target_ops *self, |
3668 | find_memory_region_ftype ignore1, void *ignore2) | |
be4d1333 | 3669 | { |
9b4eba8e | 3670 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3671 | return 0; |
3672 | } | |
3673 | ||
9b4eba8e | 3674 | /* Error-catcher for target_make_corefile_notes. */ |
24f5300a | 3675 | static gdb::unique_xmalloc_ptr<char> |
fc6691b2 TT |
3676 | dummy_make_corefile_notes (struct target_ops *self, |
3677 | bfd *ignore1, int *ignore2) | |
be4d1333 | 3678 | { |
9b4eba8e | 3679 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3680 | return NULL; |
3681 | } | |
3682 | ||
f6ac5f3d PA |
3683 | #include "target-delegates.c" |
3684 | ||
06b5b831 TT |
3685 | /* The initial current target, so that there is always a semi-valid |
3686 | current target. */ | |
3687 | ||
3688 | static dummy_target the_dummy_target; | |
c906108c | 3689 | |
5b6d1e4f PA |
3690 | /* See target.h. */ |
3691 | ||
3692 | target_ops * | |
3693 | get_dummy_target () | |
3694 | { | |
3695 | return &the_dummy_target; | |
3696 | } | |
3697 | ||
d9f719f1 PA |
3698 | static const target_info dummy_target_info = { |
3699 | "None", | |
3700 | N_("None"), | |
3701 | "" | |
3702 | }; | |
3703 | ||
66b4deae PA |
3704 | strata |
3705 | dummy_target::stratum () const | |
f6ac5f3d | 3706 | { |
66b4deae | 3707 | return dummy_stratum; |
f6ac5f3d PA |
3708 | } |
3709 | ||
66b4deae PA |
3710 | strata |
3711 | debug_target::stratum () const | |
f6ac5f3d | 3712 | { |
66b4deae | 3713 | return debug_stratum; |
f6ac5f3d PA |
3714 | } |
3715 | ||
d9f719f1 PA |
3716 | const target_info & |
3717 | dummy_target::info () const | |
f6ac5f3d | 3718 | { |
d9f719f1 | 3719 | return dummy_target_info; |
f6ac5f3d PA |
3720 | } |
3721 | ||
d9f719f1 PA |
3722 | const target_info & |
3723 | debug_target::info () const | |
f6ac5f3d | 3724 | { |
b6a8c27b | 3725 | return beneath ()->info (); |
f6ac5f3d PA |
3726 | } |
3727 | ||
c906108c | 3728 | \f |
c906108c | 3729 | |
28439f5e PA |
3730 | int |
3731 | target_thread_alive (ptid_t ptid) | |
c906108c | 3732 | { |
328d42d8 | 3733 | return current_inferior ()->top_target ()->thread_alive (ptid); |
28439f5e PA |
3734 | } |
3735 | ||
3736 | void | |
e8032dde | 3737 | target_update_thread_list (void) |
28439f5e | 3738 | { |
328d42d8 | 3739 | current_inferior ()->top_target ()->update_thread_list (); |
c906108c SS |
3740 | } |
3741 | ||
d914c394 SS |
3742 | void |
3743 | target_stop (ptid_t ptid) | |
3744 | { | |
1192f124 SM |
3745 | process_stratum_target *proc_target = current_inferior ()->process_target (); |
3746 | ||
3747 | gdb_assert (!proc_target->commit_resumed_state); | |
3748 | ||
d914c394 SS |
3749 | if (!may_stop) |
3750 | { | |
3751 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3752 | return; | |
3753 | } | |
3754 | ||
328d42d8 | 3755 | current_inferior ()->top_target ()->stop (ptid); |
d914c394 SS |
3756 | } |
3757 | ||
bfedc46a | 3758 | void |
e671cd59 | 3759 | target_interrupt () |
bfedc46a PA |
3760 | { |
3761 | if (!may_stop) | |
3762 | { | |
3763 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3764 | return; | |
3765 | } | |
3766 | ||
328d42d8 | 3767 | current_inferior ()->top_target ()->interrupt (); |
bfedc46a PA |
3768 | } |
3769 | ||
abc56d60 PA |
3770 | /* See target.h. */ |
3771 | ||
93692b58 PA |
3772 | void |
3773 | target_pass_ctrlc (void) | |
3774 | { | |
5b6d1e4f PA |
3775 | /* Pass the Ctrl-C to the first target that has a thread |
3776 | running. */ | |
3777 | for (inferior *inf : all_inferiors ()) | |
3778 | { | |
3779 | target_ops *proc_target = inf->process_target (); | |
3780 | if (proc_target == NULL) | |
3781 | continue; | |
3782 | ||
43667cc6 | 3783 | for (thread_info *thr : inf->non_exited_threads ()) |
5b6d1e4f PA |
3784 | { |
3785 | /* A thread can be THREAD_STOPPED and executing, while | |
3786 | running an infcall. */ | |
611841bb | 3787 | if (thr->state == THREAD_RUNNING || thr->executing ()) |
5b6d1e4f PA |
3788 | { |
3789 | /* We can get here quite deep in target layers. Avoid | |
3790 | switching thread context or anything that would | |
3791 | communicate with the target (e.g., to fetch | |
3792 | registers), or flushing e.g., the frame cache. We | |
3793 | just switch inferior in order to be able to call | |
3794 | through the target_stack. */ | |
3795 | scoped_restore_current_inferior restore_inferior; | |
3796 | set_current_inferior (inf); | |
328d42d8 | 3797 | current_inferior ()->top_target ()->pass_ctrlc (); |
5b6d1e4f PA |
3798 | return; |
3799 | } | |
3800 | } | |
3801 | } | |
93692b58 PA |
3802 | } |
3803 | ||
3804 | /* See target.h. */ | |
3805 | ||
3806 | void | |
3807 | default_target_pass_ctrlc (struct target_ops *ops) | |
3808 | { | |
e671cd59 | 3809 | target_interrupt (); |
93692b58 PA |
3810 | } |
3811 | ||
f8c1d06b GB |
3812 | /* See target/target.h. */ |
3813 | ||
3814 | void | |
03f4463b | 3815 | target_stop_and_wait (ptid_t ptid) |
f8c1d06b GB |
3816 | { |
3817 | struct target_waitstatus status; | |
491144b5 | 3818 | bool was_non_stop = non_stop; |
f8c1d06b | 3819 | |
491144b5 | 3820 | non_stop = true; |
f8c1d06b GB |
3821 | target_stop (ptid); |
3822 | ||
f8c1d06b GB |
3823 | target_wait (ptid, &status, 0); |
3824 | ||
3825 | non_stop = was_non_stop; | |
3826 | } | |
3827 | ||
3828 | /* See target/target.h. */ | |
3829 | ||
3830 | void | |
03f4463b | 3831 | target_continue_no_signal (ptid_t ptid) |
f8c1d06b GB |
3832 | { |
3833 | target_resume (ptid, 0, GDB_SIGNAL_0); | |
3834 | } | |
3835 | ||
049a8570 SDJ |
3836 | /* See target/target.h. */ |
3837 | ||
3838 | void | |
3839 | target_continue (ptid_t ptid, enum gdb_signal signal) | |
3840 | { | |
3841 | target_resume (ptid, 0, signal); | |
3842 | } | |
3843 | ||
fdbac7d8 | 3844 | /* Concatenate ELEM to LIST, a comma-separated list. */ |
09826ec5 | 3845 | |
09ce46f2 SM |
3846 | static void |
3847 | str_comma_list_concat_elem (std::string *list, const char *elem) | |
09826ec5 | 3848 | { |
09ce46f2 SM |
3849 | if (!list->empty ()) |
3850 | list->append (", "); | |
3851 | ||
3852 | list->append (elem); | |
09826ec5 PA |
3853 | } |
3854 | ||
3855 | /* Helper for target_options_to_string. If OPT is present in | |
3856 | TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET. | |
09ce46f2 | 3857 | OPT is removed from TARGET_OPTIONS. */ |
09826ec5 | 3858 | |
09ce46f2 | 3859 | static void |
b60cea74 TT |
3860 | do_option (target_wait_flags *target_options, std::string *ret, |
3861 | target_wait_flag opt, const char *opt_str) | |
09826ec5 PA |
3862 | { |
3863 | if ((*target_options & opt) != 0) | |
3864 | { | |
09ce46f2 | 3865 | str_comma_list_concat_elem (ret, opt_str); |
09826ec5 PA |
3866 | *target_options &= ~opt; |
3867 | } | |
09826ec5 PA |
3868 | } |
3869 | ||
fdbac7d8 SM |
3870 | /* See target.h. */ |
3871 | ||
09ce46f2 | 3872 | std::string |
b60cea74 | 3873 | target_options_to_string (target_wait_flags target_options) |
09826ec5 | 3874 | { |
09ce46f2 | 3875 | std::string ret; |
09826ec5 PA |
3876 | |
3877 | #define DO_TARG_OPTION(OPT) \ | |
09ce46f2 | 3878 | do_option (&target_options, &ret, OPT, #OPT) |
09826ec5 PA |
3879 | |
3880 | DO_TARG_OPTION (TARGET_WNOHANG); | |
3881 | ||
3882 | if (target_options != 0) | |
09ce46f2 | 3883 | str_comma_list_concat_elem (&ret, "unknown???"); |
09826ec5 | 3884 | |
09826ec5 PA |
3885 | return ret; |
3886 | } | |
3887 | ||
28439f5e PA |
3888 | void |
3889 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 3890 | { |
328d42d8 | 3891 | current_inferior ()->top_target ()->fetch_registers (regcache, regno); |
ad5989bd | 3892 | if (targetdebug) |
ef79d9a3 | 3893 | regcache->debug_print_register ("target_fetch_registers", regno); |
c906108c SS |
3894 | } |
3895 | ||
28439f5e PA |
3896 | void |
3897 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 3898 | { |
d914c394 SS |
3899 | if (!may_write_registers) |
3900 | error (_("Writing to registers is not allowed (regno %d)"), regno); | |
3901 | ||
328d42d8 | 3902 | current_inferior ()->top_target ()->store_registers (regcache, regno); |
6b84065d | 3903 | if (targetdebug) |
28439f5e | 3904 | { |
ef79d9a3 | 3905 | regcache->debug_print_register ("target_store_registers", regno); |
28439f5e | 3906 | } |
c906108c SS |
3907 | } |
3908 | ||
dc146f7c VP |
3909 | int |
3910 | target_core_of_thread (ptid_t ptid) | |
3911 | { | |
328d42d8 | 3912 | return current_inferior ()->top_target ()->core_of_thread (ptid); |
dc146f7c VP |
3913 | } |
3914 | ||
936d2992 PA |
3915 | int |
3916 | simple_verify_memory (struct target_ops *ops, | |
3917 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
3918 | { | |
3919 | LONGEST total_xfered = 0; | |
3920 | ||
3921 | while (total_xfered < size) | |
3922 | { | |
3923 | ULONGEST xfered_len; | |
3924 | enum target_xfer_status status; | |
3925 | gdb_byte buf[1024]; | |
768adc05 | 3926 | ULONGEST howmuch = std::min<ULONGEST> (sizeof (buf), size - total_xfered); |
936d2992 PA |
3927 | |
3928 | status = target_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
3929 | buf, NULL, lma + total_xfered, howmuch, | |
3930 | &xfered_len); | |
3931 | if (status == TARGET_XFER_OK | |
3932 | && memcmp (data + total_xfered, buf, xfered_len) == 0) | |
3933 | { | |
3934 | total_xfered += xfered_len; | |
3935 | QUIT; | |
3936 | } | |
3937 | else | |
3938 | return 0; | |
3939 | } | |
3940 | return 1; | |
3941 | } | |
3942 | ||
3943 | /* Default implementation of memory verification. */ | |
3944 | ||
3945 | static int | |
3946 | default_verify_memory (struct target_ops *self, | |
3947 | const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3948 | { | |
3949 | /* Start over from the top of the target stack. */ | |
328d42d8 | 3950 | return simple_verify_memory (current_inferior ()->top_target (), |
936d2992 PA |
3951 | data, memaddr, size); |
3952 | } | |
3953 | ||
4a5e7a5b PA |
3954 | int |
3955 | target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3956 | { | |
328d42d8 SM |
3957 | target_ops *target = current_inferior ()->top_target (); |
3958 | ||
3959 | return target->verify_memory (data, memaddr, size); | |
4a5e7a5b PA |
3960 | } |
3961 | ||
9c06b0b4 TJB |
3962 | /* The documentation for this function is in its prototype declaration in |
3963 | target.h. */ | |
3964 | ||
3965 | int | |
f4b0a671 SM |
3966 | target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, |
3967 | enum target_hw_bp_type rw) | |
9c06b0b4 | 3968 | { |
328d42d8 SM |
3969 | target_ops *target = current_inferior ()->top_target (); |
3970 | ||
3971 | return target->insert_mask_watchpoint (addr, mask, rw); | |
9c06b0b4 TJB |
3972 | } |
3973 | ||
3974 | /* The documentation for this function is in its prototype declaration in | |
3975 | target.h. */ | |
3976 | ||
3977 | int | |
f4b0a671 SM |
3978 | target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, |
3979 | enum target_hw_bp_type rw) | |
9c06b0b4 | 3980 | { |
328d42d8 SM |
3981 | target_ops *target = current_inferior ()->top_target (); |
3982 | ||
3983 | return target->remove_mask_watchpoint (addr, mask, rw); | |
9c06b0b4 TJB |
3984 | } |
3985 | ||
3986 | /* The documentation for this function is in its prototype declaration | |
3987 | in target.h. */ | |
3988 | ||
3989 | int | |
3990 | target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask) | |
3991 | { | |
328d42d8 SM |
3992 | target_ops *target = current_inferior ()->top_target (); |
3993 | ||
3994 | return target->masked_watch_num_registers (addr, mask); | |
9c06b0b4 TJB |
3995 | } |
3996 | ||
f1310107 TJB |
3997 | /* The documentation for this function is in its prototype declaration |
3998 | in target.h. */ | |
3999 | ||
4000 | int | |
4001 | target_ranged_break_num_registers (void) | |
4002 | { | |
328d42d8 | 4003 | return current_inferior ()->top_target ()->ranged_break_num_registers (); |
f1310107 TJB |
4004 | } |
4005 | ||
02d27625 MM |
4006 | /* See target.h. */ |
4007 | ||
02d27625 | 4008 | struct btrace_target_info * |
696c0d5e | 4009 | target_enable_btrace (thread_info *tp, const struct btrace_config *conf) |
02d27625 | 4010 | { |
696c0d5e | 4011 | return current_inferior ()->top_target ()->enable_btrace (tp, conf); |
02d27625 MM |
4012 | } |
4013 | ||
4014 | /* See target.h. */ | |
4015 | ||
4016 | void | |
4017 | target_disable_btrace (struct btrace_target_info *btinfo) | |
4018 | { | |
328d42d8 | 4019 | current_inferior ()->top_target ()->disable_btrace (btinfo); |
02d27625 MM |
4020 | } |
4021 | ||
4022 | /* See target.h. */ | |
4023 | ||
4024 | void | |
4025 | target_teardown_btrace (struct btrace_target_info *btinfo) | |
4026 | { | |
328d42d8 | 4027 | current_inferior ()->top_target ()->teardown_btrace (btinfo); |
02d27625 MM |
4028 | } |
4029 | ||
4030 | /* See target.h. */ | |
4031 | ||
969c39fb | 4032 | enum btrace_error |
734b0e4b | 4033 | target_read_btrace (struct btrace_data *btrace, |
969c39fb | 4034 | struct btrace_target_info *btinfo, |
02d27625 MM |
4035 | enum btrace_read_type type) |
4036 | { | |
328d42d8 SM |
4037 | target_ops *target = current_inferior ()->top_target (); |
4038 | ||
4039 | return target->read_btrace (btrace, btinfo, type); | |
02d27625 MM |
4040 | } |
4041 | ||
d02ed0bb MM |
4042 | /* See target.h. */ |
4043 | ||
f4abbc16 MM |
4044 | const struct btrace_config * |
4045 | target_btrace_conf (const struct btrace_target_info *btinfo) | |
4046 | { | |
328d42d8 | 4047 | return current_inferior ()->top_target ()->btrace_conf (btinfo); |
f4abbc16 MM |
4048 | } |
4049 | ||
4050 | /* See target.h. */ | |
4051 | ||
7c1687a9 MM |
4052 | void |
4053 | target_stop_recording (void) | |
4054 | { | |
328d42d8 | 4055 | current_inferior ()->top_target ()->stop_recording (); |
7c1687a9 MM |
4056 | } |
4057 | ||
4058 | /* See target.h. */ | |
4059 | ||
d02ed0bb | 4060 | void |
85e1311a | 4061 | target_save_record (const char *filename) |
d02ed0bb | 4062 | { |
328d42d8 | 4063 | current_inferior ()->top_target ()->save_record (filename); |
d02ed0bb MM |
4064 | } |
4065 | ||
4066 | /* See target.h. */ | |
4067 | ||
4068 | int | |
f6ac5f3d | 4069 | target_supports_delete_record () |
d02ed0bb | 4070 | { |
328d42d8 | 4071 | return current_inferior ()->top_target ()->supports_delete_record (); |
d02ed0bb MM |
4072 | } |
4073 | ||
4074 | /* See target.h. */ | |
4075 | ||
4076 | void | |
4077 | target_delete_record (void) | |
4078 | { | |
328d42d8 | 4079 | current_inferior ()->top_target ()->delete_record (); |
d02ed0bb MM |
4080 | } |
4081 | ||
4082 | /* See target.h. */ | |
4083 | ||
b158a20f TW |
4084 | enum record_method |
4085 | target_record_method (ptid_t ptid) | |
4086 | { | |
328d42d8 | 4087 | return current_inferior ()->top_target ()->record_method (ptid); |
b158a20f TW |
4088 | } |
4089 | ||
4090 | /* See target.h. */ | |
4091 | ||
d02ed0bb | 4092 | int |
a52eab48 | 4093 | target_record_is_replaying (ptid_t ptid) |
d02ed0bb | 4094 | { |
328d42d8 | 4095 | return current_inferior ()->top_target ()->record_is_replaying (ptid); |
d02ed0bb MM |
4096 | } |
4097 | ||
4098 | /* See target.h. */ | |
4099 | ||
7ff27e9b MM |
4100 | int |
4101 | target_record_will_replay (ptid_t ptid, int dir) | |
4102 | { | |
328d42d8 | 4103 | return current_inferior ()->top_target ()->record_will_replay (ptid, dir); |
7ff27e9b MM |
4104 | } |
4105 | ||
4106 | /* See target.h. */ | |
4107 | ||
797094dd MM |
4108 | void |
4109 | target_record_stop_replaying (void) | |
4110 | { | |
328d42d8 | 4111 | current_inferior ()->top_target ()->record_stop_replaying (); |
797094dd MM |
4112 | } |
4113 | ||
4114 | /* See target.h. */ | |
4115 | ||
d02ed0bb MM |
4116 | void |
4117 | target_goto_record_begin (void) | |
4118 | { | |
328d42d8 | 4119 | current_inferior ()->top_target ()->goto_record_begin (); |
d02ed0bb MM |
4120 | } |
4121 | ||
4122 | /* See target.h. */ | |
4123 | ||
4124 | void | |
4125 | target_goto_record_end (void) | |
4126 | { | |
328d42d8 | 4127 | current_inferior ()->top_target ()->goto_record_end (); |
d02ed0bb MM |
4128 | } |
4129 | ||
4130 | /* See target.h. */ | |
4131 | ||
4132 | void | |
4133 | target_goto_record (ULONGEST insn) | |
4134 | { | |
328d42d8 | 4135 | current_inferior ()->top_target ()->goto_record (insn); |
d02ed0bb MM |
4136 | } |
4137 | ||
67c86d06 MM |
4138 | /* See target.h. */ |
4139 | ||
4140 | void | |
9a24775b | 4141 | target_insn_history (int size, gdb_disassembly_flags flags) |
67c86d06 | 4142 | { |
328d42d8 | 4143 | current_inferior ()->top_target ()->insn_history (size, flags); |
67c86d06 MM |
4144 | } |
4145 | ||
4146 | /* See target.h. */ | |
4147 | ||
4148 | void | |
9a24775b PA |
4149 | target_insn_history_from (ULONGEST from, int size, |
4150 | gdb_disassembly_flags flags) | |
67c86d06 | 4151 | { |
328d42d8 | 4152 | current_inferior ()->top_target ()->insn_history_from (from, size, flags); |
67c86d06 MM |
4153 | } |
4154 | ||
4155 | /* See target.h. */ | |
4156 | ||
4157 | void | |
9a24775b PA |
4158 | target_insn_history_range (ULONGEST begin, ULONGEST end, |
4159 | gdb_disassembly_flags flags) | |
67c86d06 | 4160 | { |
328d42d8 | 4161 | current_inferior ()->top_target ()->insn_history_range (begin, end, flags); |
67c86d06 MM |
4162 | } |
4163 | ||
15984c13 MM |
4164 | /* See target.h. */ |
4165 | ||
4166 | void | |
0cb7c7b0 | 4167 | target_call_history (int size, record_print_flags flags) |
15984c13 | 4168 | { |
328d42d8 | 4169 | current_inferior ()->top_target ()->call_history (size, flags); |
15984c13 MM |
4170 | } |
4171 | ||
4172 | /* See target.h. */ | |
4173 | ||
4174 | void | |
0cb7c7b0 | 4175 | target_call_history_from (ULONGEST begin, int size, record_print_flags flags) |
15984c13 | 4176 | { |
328d42d8 | 4177 | current_inferior ()->top_target ()->call_history_from (begin, size, flags); |
15984c13 MM |
4178 | } |
4179 | ||
4180 | /* See target.h. */ | |
4181 | ||
4182 | void | |
0cb7c7b0 | 4183 | target_call_history_range (ULONGEST begin, ULONGEST end, record_print_flags flags) |
15984c13 | 4184 | { |
328d42d8 | 4185 | current_inferior ()->top_target ()->call_history_range (begin, end, flags); |
15984c13 MM |
4186 | } |
4187 | ||
ea001bdc MM |
4188 | /* See target.h. */ |
4189 | ||
4190 | const struct frame_unwind * | |
4191 | target_get_unwinder (void) | |
4192 | { | |
328d42d8 | 4193 | return current_inferior ()->top_target ()->get_unwinder (); |
ea001bdc MM |
4194 | } |
4195 | ||
4196 | /* See target.h. */ | |
4197 | ||
4198 | const struct frame_unwind * | |
4199 | target_get_tailcall_unwinder (void) | |
4200 | { | |
328d42d8 | 4201 | return current_inferior ()->top_target ()->get_tailcall_unwinder (); |
ea001bdc MM |
4202 | } |
4203 | ||
5fff78c4 MM |
4204 | /* See target.h. */ |
4205 | ||
4206 | void | |
4207 | target_prepare_to_generate_core (void) | |
4208 | { | |
328d42d8 | 4209 | current_inferior ()->top_target ()->prepare_to_generate_core (); |
5fff78c4 MM |
4210 | } |
4211 | ||
4212 | /* See target.h. */ | |
4213 | ||
4214 | void | |
4215 | target_done_generating_core (void) | |
4216 | { | |
328d42d8 | 4217 | current_inferior ()->top_target ()->done_generating_core (); |
5fff78c4 MM |
4218 | } |
4219 | ||
c906108c | 4220 | \f |
c5aa993b JM |
4221 | |
4222 | static char targ_desc[] = | |
3e43a32a MS |
4223 | "Names of targets and files being debugged.\nShows the entire \ |
4224 | stack of targets currently in use (including the exec-file,\n\ | |
c906108c SS |
4225 | core-file, and process, if any), as well as the symbol file name."; |
4226 | ||
a53f3625 | 4227 | static void |
a30bf1f1 TT |
4228 | default_rcmd (struct target_ops *self, const char *command, |
4229 | struct ui_file *output) | |
a53f3625 TT |
4230 | { |
4231 | error (_("\"monitor\" command not supported by this target.")); | |
4232 | } | |
4233 | ||
96baa820 | 4234 | static void |
0b39b52e | 4235 | do_monitor_command (const char *cmd, int from_tty) |
96baa820 | 4236 | { |
96baa820 JM |
4237 | target_rcmd (cmd, gdb_stdtarg); |
4238 | } | |
4239 | ||
78cbbba8 LM |
4240 | /* Erases all the memory regions marked as flash. CMD and FROM_TTY are |
4241 | ignored. */ | |
4242 | ||
4243 | void | |
0b39b52e | 4244 | flash_erase_command (const char *cmd, int from_tty) |
78cbbba8 LM |
4245 | { |
4246 | /* Used to communicate termination of flash operations to the target. */ | |
4247 | bool found_flash_region = false; | |
99d9c3b9 | 4248 | gdbarch *gdbarch = current_inferior ()->arch (); |
78cbbba8 | 4249 | |
a664f67e | 4250 | std::vector<mem_region> mem_regions = target_memory_map (); |
78cbbba8 LM |
4251 | |
4252 | /* Iterate over all memory regions. */ | |
a664f67e | 4253 | for (const mem_region &m : mem_regions) |
78cbbba8 | 4254 | { |
78cbbba8 | 4255 | /* Is this a flash memory region? */ |
a664f67e | 4256 | if (m.attrib.mode == MEM_FLASH) |
dda83cd7 SM |
4257 | { |
4258 | found_flash_region = true; | |
4259 | target_flash_erase (m.lo, m.hi - m.lo); | |
78cbbba8 | 4260 | |
76f9c9cf | 4261 | ui_out_emit_tuple tuple_emitter (current_uiout, "erased-regions"); |
78cbbba8 | 4262 | |
dda83cd7 SM |
4263 | current_uiout->message (_("Erasing flash memory region at address ")); |
4264 | current_uiout->field_core_addr ("address", gdbarch, m.lo); | |
4265 | current_uiout->message (", size = "); | |
4266 | current_uiout->field_string ("size", hex_string (m.hi - m.lo)); | |
4267 | current_uiout->message ("\n"); | |
4268 | } | |
78cbbba8 LM |
4269 | } |
4270 | ||
4271 | /* Did we do any flash operations? If so, we need to finalize them. */ | |
4272 | if (found_flash_region) | |
4273 | target_flash_done (); | |
4274 | else | |
4275 | current_uiout->message (_("No flash memory regions found.\n")); | |
4276 | } | |
4277 | ||
87680a14 JB |
4278 | /* Print the name of each layers of our target stack. */ |
4279 | ||
4280 | static void | |
d3cb6b99 | 4281 | maintenance_print_target_stack (const char *cmd, int from_tty) |
87680a14 | 4282 | { |
6cb06a8c | 4283 | gdb_printf (_("The current target stack is:\n")); |
87680a14 | 4284 | |
328d42d8 SM |
4285 | for (target_ops *t = current_inferior ()->top_target (); |
4286 | t != NULL; | |
4287 | t = t->beneath ()) | |
87680a14 | 4288 | { |
66b4deae | 4289 | if (t->stratum () == debug_stratum) |
f6ac5f3d | 4290 | continue; |
6cb06a8c | 4291 | gdb_printf (" - %s (%s)\n", t->shortname (), t->longname ()); |
87680a14 JB |
4292 | } |
4293 | } | |
4294 | ||
372316f1 PA |
4295 | /* See target.h. */ |
4296 | ||
4297 | void | |
4a570176 | 4298 | target_async (bool enable) |
372316f1 | 4299 | { |
bf94662b AB |
4300 | /* If we are trying to enable async mode then it must be the case that |
4301 | async mode is possible for this target. */ | |
4302 | gdb_assert (!enable || target_can_async_p ()); | |
372316f1 | 4303 | infrun_async (enable); |
328d42d8 | 4304 | current_inferior ()->top_target ()->async (enable); |
372316f1 PA |
4305 | } |
4306 | ||
65706a29 PA |
4307 | /* See target.h. */ |
4308 | ||
4309 | void | |
4310 | target_thread_events (int enable) | |
4311 | { | |
328d42d8 | 4312 | current_inferior ()->top_target ()->thread_events (enable); |
65706a29 PA |
4313 | } |
4314 | ||
65c459ab PA |
4315 | /* See target.h. */ |
4316 | ||
4317 | bool | |
4318 | target_supports_set_thread_options (gdb_thread_options options) | |
4319 | { | |
4320 | inferior *inf = current_inferior (); | |
4321 | return inf->top_target ()->supports_set_thread_options (options); | |
4322 | } | |
4323 | ||
329ea579 PA |
4324 | /* Controls if targets can report that they can/are async. This is |
4325 | just for maintainers to use when debugging gdb. */ | |
491144b5 | 4326 | bool target_async_permitted = true; |
c6ebd6cf | 4327 | |
c6ebd6cf | 4328 | static void |
fdf1350d | 4329 | set_maint_target_async (bool permitted) |
c6ebd6cf | 4330 | { |
c35b1492 | 4331 | if (have_live_inferiors ()) |
fdf1350d | 4332 | error (_("Cannot change this setting while the inferior is running.")); |
c6ebd6cf | 4333 | |
fdf1350d SM |
4334 | target_async_permitted = permitted; |
4335 | } | |
4336 | ||
4337 | static bool | |
4338 | get_maint_target_async () | |
4339 | { | |
4340 | return target_async_permitted; | |
c6ebd6cf VP |
4341 | } |
4342 | ||
4343 | static void | |
fdf1350d SM |
4344 | show_maint_target_async (ui_file *file, int from_tty, |
4345 | cmd_list_element *c, const char *value) | |
c6ebd6cf | 4346 | { |
6cb06a8c TT |
4347 | gdb_printf (file, |
4348 | _("Controlling the inferior in " | |
4349 | "asynchronous mode is %s.\n"), value); | |
c6ebd6cf VP |
4350 | } |
4351 | ||
fbea99ea PA |
4352 | /* Return true if the target operates in non-stop mode even with "set |
4353 | non-stop off". */ | |
4354 | ||
4355 | static int | |
4356 | target_always_non_stop_p (void) | |
4357 | { | |
328d42d8 | 4358 | return current_inferior ()->top_target ()->always_non_stop_p (); |
fbea99ea PA |
4359 | } |
4360 | ||
4361 | /* See target.h. */ | |
4362 | ||
6ff267e1 SM |
4363 | bool |
4364 | target_is_non_stop_p () | |
fbea99ea | 4365 | { |
e5b9b39f PA |
4366 | return ((non_stop |
4367 | || target_non_stop_enabled == AUTO_BOOLEAN_TRUE | |
4368 | || (target_non_stop_enabled == AUTO_BOOLEAN_AUTO | |
4369 | && target_always_non_stop_p ())) | |
4370 | && target_can_async_p ()); | |
fbea99ea PA |
4371 | } |
4372 | ||
a0714d30 TBA |
4373 | /* See target.h. */ |
4374 | ||
4375 | bool | |
4376 | exists_non_stop_target () | |
4377 | { | |
4378 | if (target_is_non_stop_p ()) | |
4379 | return true; | |
4380 | ||
4381 | scoped_restore_current_thread restore_thread; | |
4382 | ||
4383 | for (inferior *inf : all_inferiors ()) | |
4384 | { | |
4385 | switch_to_inferior_no_thread (inf); | |
4386 | if (target_is_non_stop_p ()) | |
4387 | return true; | |
4388 | } | |
4389 | ||
4390 | return false; | |
4391 | } | |
4392 | ||
fbea99ea PA |
4393 | /* Controls if targets can report that they always run in non-stop |
4394 | mode. This is just for maintainers to use when debugging gdb. */ | |
4395 | enum auto_boolean target_non_stop_enabled = AUTO_BOOLEAN_AUTO; | |
4396 | ||
fdf1350d | 4397 | /* Set callback for maint target-non-stop setting. */ |
fbea99ea PA |
4398 | |
4399 | static void | |
fdf1350d | 4400 | set_maint_target_non_stop (auto_boolean enabled) |
fbea99ea PA |
4401 | { |
4402 | if (have_live_inferiors ()) | |
fdf1350d | 4403 | error (_("Cannot change this setting while the inferior is running.")); |
fbea99ea | 4404 | |
fdf1350d | 4405 | target_non_stop_enabled = enabled; |
fbea99ea PA |
4406 | } |
4407 | ||
fdf1350d SM |
4408 | /* Get callback for maint target-non-stop setting. */ |
4409 | ||
4410 | static auto_boolean | |
4411 | get_maint_target_non_stop () | |
4412 | { | |
4413 | return target_non_stop_enabled; | |
4414 | } | |
fbea99ea PA |
4415 | |
4416 | static void | |
fdf1350d SM |
4417 | show_maint_target_non_stop (ui_file *file, int from_tty, |
4418 | cmd_list_element *c, const char *value) | |
fbea99ea PA |
4419 | { |
4420 | if (target_non_stop_enabled == AUTO_BOOLEAN_AUTO) | |
6cb06a8c TT |
4421 | gdb_printf (file, |
4422 | _("Whether the target is always in non-stop mode " | |
4423 | "is %s (currently %s).\n"), value, | |
4424 | target_always_non_stop_p () ? "on" : "off"); | |
fbea99ea | 4425 | else |
6cb06a8c TT |
4426 | gdb_printf (file, |
4427 | _("Whether the target is always in non-stop mode " | |
4428 | "is %s.\n"), value); | |
fbea99ea PA |
4429 | } |
4430 | ||
d914c394 SS |
4431 | /* Temporary copies of permission settings. */ |
4432 | ||
491144b5 CB |
4433 | static bool may_write_registers_1 = true; |
4434 | static bool may_write_memory_1 = true; | |
4435 | static bool may_insert_breakpoints_1 = true; | |
4436 | static bool may_insert_tracepoints_1 = true; | |
4437 | static bool may_insert_fast_tracepoints_1 = true; | |
4438 | static bool may_stop_1 = true; | |
d914c394 SS |
4439 | |
4440 | /* Make the user-set values match the real values again. */ | |
4441 | ||
4442 | void | |
4443 | update_target_permissions (void) | |
4444 | { | |
4445 | may_write_registers_1 = may_write_registers; | |
4446 | may_write_memory_1 = may_write_memory; | |
4447 | may_insert_breakpoints_1 = may_insert_breakpoints; | |
4448 | may_insert_tracepoints_1 = may_insert_tracepoints; | |
4449 | may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints; | |
4450 | may_stop_1 = may_stop; | |
4451 | } | |
4452 | ||
4453 | /* The one function handles (most of) the permission flags in the same | |
4454 | way. */ | |
4455 | ||
4456 | static void | |
eb4c3f4a | 4457 | set_target_permissions (const char *args, int from_tty, |
d914c394 SS |
4458 | struct cmd_list_element *c) |
4459 | { | |
55f6301a | 4460 | if (target_has_execution ()) |
d914c394 SS |
4461 | { |
4462 | update_target_permissions (); | |
4463 | error (_("Cannot change this setting while the inferior is running.")); | |
4464 | } | |
4465 | ||
4466 | /* Make the real values match the user-changed values. */ | |
d914c394 SS |
4467 | may_insert_breakpoints = may_insert_breakpoints_1; |
4468 | may_insert_tracepoints = may_insert_tracepoints_1; | |
4469 | may_insert_fast_tracepoints = may_insert_fast_tracepoints_1; | |
4470 | may_stop = may_stop_1; | |
4471 | update_observer_mode (); | |
4472 | } | |
4473 | ||
d8a001f5 | 4474 | /* Set some permissions independently of observer mode. */ |
d914c394 SS |
4475 | |
4476 | static void | |
d8a001f5 TT |
4477 | set_write_memory_registers_permission (const char *args, int from_tty, |
4478 | struct cmd_list_element *c) | |
d914c394 SS |
4479 | { |
4480 | /* Make the real values match the user-changed values. */ | |
4481 | may_write_memory = may_write_memory_1; | |
d8a001f5 | 4482 | may_write_registers = may_write_registers_1; |
d914c394 SS |
4483 | update_observer_mode (); |
4484 | } | |
4485 | ||
6c265988 SM |
4486 | void _initialize_target (); |
4487 | ||
c906108c | 4488 | void |
5b6d1e4f | 4489 | _initialize_target () |
c906108c | 4490 | { |
f6ac5f3d | 4491 | the_debug_target = new debug_target (); |
c906108c | 4492 | |
11db9430 SM |
4493 | add_info ("target", info_target_command, targ_desc); |
4494 | add_info ("files", info_target_command, targ_desc); | |
c906108c | 4495 | |
ccce17b0 | 4496 | add_setshow_zuinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
85c07804 AC |
4497 | Set target debugging."), _("\ |
4498 | Show target debugging."), _("\ | |
333dabeb | 4499 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
3cecbbbe TT |
4500 | verbose."), |
4501 | set_targetdebug, | |
ccce17b0 YQ |
4502 | show_targetdebug, |
4503 | &setdebuglist, &showdebuglist); | |
3a11626d | 4504 | |
2bc416ba | 4505 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
4506 | &trust_readonly, _("\ |
4507 | Set mode for reading from readonly sections."), _("\ | |
4508 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
4509 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
4510 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 4511 | result in significant performance improvement for remote targets."), |
2c5b56ce | 4512 | NULL, |
920d2a44 | 4513 | show_trust_readonly, |
e707bbc2 | 4514 | &setlist, &showlist); |
96baa820 JM |
4515 | |
4516 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 4517 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 4518 | |
87680a14 | 4519 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
dda83cd7 SM |
4520 | _("Print the name of each layer of the internal target stack."), |
4521 | &maintenanceprintlist); | |
87680a14 | 4522 | |
c6ebd6cf | 4523 | add_setshow_boolean_cmd ("target-async", no_class, |
fdf1350d | 4524 | _("\ |
c6ebd6cf VP |
4525 | Set whether gdb controls the inferior in asynchronous mode."), _("\ |
4526 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
4527 | Tells gdb whether to control the inferior in asynchronous mode."), | |
fdf1350d SM |
4528 | set_maint_target_async, |
4529 | get_maint_target_async, | |
4530 | show_maint_target_async, | |
329ea579 PA |
4531 | &maintenance_set_cmdlist, |
4532 | &maintenance_show_cmdlist); | |
c6ebd6cf | 4533 | |
fbea99ea | 4534 | add_setshow_auto_boolean_cmd ("target-non-stop", no_class, |
fdf1350d | 4535 | _("\ |
fbea99ea PA |
4536 | Set whether gdb always controls the inferior in non-stop mode."), _("\ |
4537 | Show whether gdb always controls the inferior in non-stop mode."), _("\ | |
4538 | Tells gdb whether to control the inferior in non-stop mode."), | |
fdf1350d SM |
4539 | set_maint_target_non_stop, |
4540 | get_maint_target_non_stop, | |
4541 | show_maint_target_non_stop, | |
fbea99ea PA |
4542 | &maintenance_set_cmdlist, |
4543 | &maintenance_show_cmdlist); | |
4544 | ||
d914c394 SS |
4545 | add_setshow_boolean_cmd ("may-write-registers", class_support, |
4546 | &may_write_registers_1, _("\ | |
4547 | Set permission to write into registers."), _("\ | |
4548 | Show permission to write into registers."), _("\ | |
4549 | When this permission is on, GDB may write into the target's registers.\n\ | |
4550 | Otherwise, any sort of write attempt will result in an error."), | |
d8a001f5 | 4551 | set_write_memory_registers_permission, NULL, |
d914c394 SS |
4552 | &setlist, &showlist); |
4553 | ||
4554 | add_setshow_boolean_cmd ("may-write-memory", class_support, | |
4555 | &may_write_memory_1, _("\ | |
4556 | Set permission to write into target memory."), _("\ | |
4557 | Show permission to write into target memory."), _("\ | |
4558 | When this permission is on, GDB may write into the target's memory.\n\ | |
4559 | Otherwise, any sort of write attempt will result in an error."), | |
d8a001f5 | 4560 | set_write_memory_registers_permission, NULL, |
d914c394 SS |
4561 | &setlist, &showlist); |
4562 | ||
4563 | add_setshow_boolean_cmd ("may-insert-breakpoints", class_support, | |
4564 | &may_insert_breakpoints_1, _("\ | |
4565 | Set permission to insert breakpoints in the target."), _("\ | |
4566 | Show permission to insert breakpoints in the target."), _("\ | |
4567 | When this permission is on, GDB may insert breakpoints in the program.\n\ | |
4568 | Otherwise, any sort of insertion attempt will result in an error."), | |
4569 | set_target_permissions, NULL, | |
4570 | &setlist, &showlist); | |
4571 | ||
4572 | add_setshow_boolean_cmd ("may-insert-tracepoints", class_support, | |
4573 | &may_insert_tracepoints_1, _("\ | |
4574 | Set permission to insert tracepoints in the target."), _("\ | |
4575 | Show permission to insert tracepoints in the target."), _("\ | |
4576 | When this permission is on, GDB may insert tracepoints in the program.\n\ | |
4577 | Otherwise, any sort of insertion attempt will result in an error."), | |
4578 | set_target_permissions, NULL, | |
4579 | &setlist, &showlist); | |
4580 | ||
4581 | add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support, | |
4582 | &may_insert_fast_tracepoints_1, _("\ | |
4583 | Set permission to insert fast tracepoints in the target."), _("\ | |
4584 | Show permission to insert fast tracepoints in the target."), _("\ | |
4585 | When this permission is on, GDB may insert fast tracepoints.\n\ | |
4586 | Otherwise, any sort of insertion attempt will result in an error."), | |
4587 | set_target_permissions, NULL, | |
4588 | &setlist, &showlist); | |
4589 | ||
4590 | add_setshow_boolean_cmd ("may-interrupt", class_support, | |
4591 | &may_stop_1, _("\ | |
4592 | Set permission to interrupt or signal the target."), _("\ | |
4593 | Show permission to interrupt or signal the target."), _("\ | |
4594 | When this permission is on, GDB may interrupt/stop the target's execution.\n\ | |
4595 | Otherwise, any attempt to interrupt or stop will be ignored."), | |
4596 | set_target_permissions, NULL, | |
4597 | &setlist, &showlist); | |
6a3cb8e8 | 4598 | |
78cbbba8 | 4599 | add_com ("flash-erase", no_class, flash_erase_command, |
dda83cd7 | 4600 | _("Erase all flash memory regions.")); |
78cbbba8 | 4601 | |
6a3cb8e8 PA |
4602 | add_setshow_boolean_cmd ("auto-connect-native-target", class_support, |
4603 | &auto_connect_native_target, _("\ | |
4604 | Set whether GDB may automatically connect to the native target."), _("\ | |
4605 | Show whether GDB may automatically connect to the native target."), _("\ | |
4606 | When on, and GDB is not connected to a target yet, GDB\n\ | |
4607 | attempts \"run\" and other commands with the native target."), | |
4608 | NULL, show_auto_connect_native_target, | |
4609 | &setlist, &showlist); | |
c906108c | 4610 | } |