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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 | ||
0a4f40a2 | 60 | static void default_terminal_info (struct target_ops *, const char *, int); |
c906108c | 61 | |
5009afc5 AS |
62 | static int default_watchpoint_addr_within_range (struct target_ops *, |
63 | CORE_ADDR, CORE_ADDR, int); | |
64 | ||
31568a15 TT |
65 | static int default_region_ok_for_hw_watchpoint (struct target_ops *, |
66 | CORE_ADDR, int); | |
e0d24f8d | 67 | |
a30bf1f1 | 68 | static void default_rcmd (struct target_ops *, const char *, struct ui_file *); |
a53f3625 | 69 | |
4229b31d | 70 | static ptid_t default_get_ada_task_ptid (struct target_ops *self, |
c80e29db | 71 | long lwp, ULONGEST tid); |
4229b31d | 72 | |
8d657035 TT |
73 | static void default_mourn_inferior (struct target_ops *self); |
74 | ||
58a5184e TT |
75 | static int default_search_memory (struct target_ops *ops, |
76 | CORE_ADDR start_addr, | |
77 | ULONGEST search_space_len, | |
78 | const gdb_byte *pattern, | |
79 | ULONGEST pattern_len, | |
80 | CORE_ADDR *found_addrp); | |
81 | ||
936d2992 PA |
82 | static int default_verify_memory (struct target_ops *self, |
83 | const gdb_byte *data, | |
84 | CORE_ADDR memaddr, ULONGEST size); | |
85 | ||
c25c4a8b | 86 | static void tcomplain (void) ATTRIBUTE_NORETURN; |
c906108c | 87 | |
a121b7c1 | 88 | static struct target_ops *find_default_run_target (const char *); |
c906108c | 89 | |
0b5a2719 TT |
90 | static int dummy_find_memory_regions (struct target_ops *self, |
91 | find_memory_region_ftype ignore1, | |
92 | void *ignore2); | |
93 | ||
24f5300a SM |
94 | static gdb::unique_xmalloc_ptr<char> dummy_make_corefile_notes |
95 | (struct target_ops *self, bfd *ignore1, int *ignore2); | |
16f796b1 | 96 | |
a068643d | 97 | static std::string default_pid_to_str (struct target_ops *ops, ptid_t ptid); |
770234d3 | 98 | |
fe31bf5b TT |
99 | static enum exec_direction_kind default_execution_direction |
100 | (struct target_ops *self); | |
101 | ||
d9f719f1 PA |
102 | /* Mapping between target_info objects (which have address identity) |
103 | and corresponding open/factory function/callback. Each add_target | |
104 | call adds one entry to this map, and registers a "target | |
105 | TARGET_NAME" command that when invoked calls the factory registered | |
106 | here. The target_info object is associated with the command via | |
107 | the command's context. */ | |
108 | static std::unordered_map<const target_info *, target_open_ftype *> | |
109 | target_factories; | |
c906108c | 110 | |
06b5b831 | 111 | /* The singleton debug target. */ |
c906108c | 112 | |
f6ac5f3d | 113 | static struct target_ops *the_debug_target; |
c906108c | 114 | |
c906108c SS |
115 | /* Command list for target. */ |
116 | ||
117 | static struct cmd_list_element *targetlist = NULL; | |
118 | ||
358be6e7 | 119 | /* See target.h. */ |
cf7a04e8 | 120 | |
358be6e7 | 121 | bool trust_readonly = false; |
cf7a04e8 | 122 | |
8defab1a DJ |
123 | /* Nonzero if we should show true memory content including |
124 | memory breakpoint inserted by gdb. */ | |
125 | ||
126 | static int show_memory_breakpoints = 0; | |
127 | ||
d914c394 SS |
128 | /* These globals control whether GDB attempts to perform these |
129 | operations; they are useful for targets that need to prevent | |
30baf67b | 130 | inadvertent disruption, such as in non-stop mode. */ |
d914c394 | 131 | |
491144b5 | 132 | bool may_write_registers = true; |
d914c394 | 133 | |
491144b5 | 134 | bool may_write_memory = true; |
d914c394 | 135 | |
491144b5 | 136 | bool may_insert_breakpoints = true; |
d914c394 | 137 | |
491144b5 | 138 | bool may_insert_tracepoints = true; |
d914c394 | 139 | |
491144b5 | 140 | bool may_insert_fast_tracepoints = true; |
d914c394 | 141 | |
491144b5 | 142 | bool may_stop = true; |
d914c394 | 143 | |
c906108c SS |
144 | /* Non-zero if we want to see trace of target level stuff. */ |
145 | ||
ccce17b0 | 146 | static unsigned int targetdebug = 0; |
3cecbbbe TT |
147 | |
148 | static void | |
eb4c3f4a | 149 | set_targetdebug (const char *args, int from_tty, struct cmd_list_element *c) |
3cecbbbe | 150 | { |
f6ac5f3d | 151 | if (targetdebug) |
02980c56 | 152 | current_inferior ()->push_target (the_debug_target); |
f6ac5f3d | 153 | else |
fadf6add | 154 | current_inferior ()->unpush_target (the_debug_target); |
3cecbbbe TT |
155 | } |
156 | ||
920d2a44 AC |
157 | static void |
158 | show_targetdebug (struct ui_file *file, int from_tty, | |
159 | struct cmd_list_element *c, const char *value) | |
160 | { | |
6cb06a8c | 161 | gdb_printf (file, _("Target debugging is %s.\n"), value); |
920d2a44 | 162 | } |
c906108c | 163 | |
c35b1492 | 164 | int |
a739972c | 165 | target_has_memory () |
c35b1492 | 166 | { |
328d42d8 SM |
167 | for (target_ops *t = current_inferior ()->top_target (); |
168 | t != NULL; | |
169 | t = t->beneath ()) | |
f6ac5f3d | 170 | if (t->has_memory ()) |
c35b1492 PA |
171 | return 1; |
172 | ||
173 | return 0; | |
174 | } | |
175 | ||
176 | int | |
841de120 | 177 | target_has_stack () |
c35b1492 | 178 | { |
328d42d8 SM |
179 | for (target_ops *t = current_inferior ()->top_target (); |
180 | t != NULL; | |
181 | t = t->beneath ()) | |
f6ac5f3d | 182 | if (t->has_stack ()) |
c35b1492 PA |
183 | return 1; |
184 | ||
185 | return 0; | |
186 | } | |
187 | ||
188 | int | |
9dccd06e | 189 | target_has_registers () |
c35b1492 | 190 | { |
328d42d8 SM |
191 | for (target_ops *t = current_inferior ()->top_target (); |
192 | t != NULL; | |
193 | t = t->beneath ()) | |
f6ac5f3d | 194 | if (t->has_registers ()) |
c35b1492 PA |
195 | return 1; |
196 | ||
197 | return 0; | |
198 | } | |
199 | ||
5018ce90 | 200 | bool |
55f6301a | 201 | target_has_execution (inferior *inf) |
c35b1492 | 202 | { |
55f6301a TT |
203 | if (inf == nullptr) |
204 | inf = current_inferior (); | |
205 | ||
5b6d1e4f PA |
206 | for (target_ops *t = inf->top_target (); |
207 | t != nullptr; | |
208 | t = inf->find_target_beneath (t)) | |
5018ce90 PA |
209 | if (t->has_execution (inf)) |
210 | return true; | |
c35b1492 | 211 | |
5018ce90 | 212 | return false; |
c35b1492 PA |
213 | } |
214 | ||
d777bf0d SM |
215 | const char * |
216 | target_shortname () | |
217 | { | |
328d42d8 | 218 | return current_inferior ()->top_target ()->shortname (); |
d777bf0d SM |
219 | } |
220 | ||
221 | /* See target.h. */ | |
222 | ||
223 | bool | |
224 | target_attach_no_wait () | |
225 | { | |
328d42d8 | 226 | return current_inferior ()->top_target ()->attach_no_wait (); |
d777bf0d SM |
227 | } |
228 | ||
229 | /* See target.h. */ | |
230 | ||
231 | void | |
232 | target_post_attach (int pid) | |
233 | { | |
328d42d8 | 234 | return current_inferior ()->top_target ()->post_attach (pid); |
d777bf0d SM |
235 | } |
236 | ||
237 | /* See target.h. */ | |
238 | ||
239 | void | |
240 | target_prepare_to_store (regcache *regcache) | |
241 | { | |
328d42d8 | 242 | return current_inferior ()->top_target ()->prepare_to_store (regcache); |
d777bf0d SM |
243 | } |
244 | ||
245 | /* See target.h. */ | |
246 | ||
247 | bool | |
248 | target_supports_enable_disable_tracepoint () | |
249 | { | |
328d42d8 SM |
250 | target_ops *target = current_inferior ()->top_target (); |
251 | ||
252 | return target->supports_enable_disable_tracepoint (); | |
d777bf0d SM |
253 | } |
254 | ||
255 | bool | |
256 | target_supports_string_tracing () | |
257 | { | |
328d42d8 | 258 | return current_inferior ()->top_target ()->supports_string_tracing (); |
d777bf0d SM |
259 | } |
260 | ||
261 | /* See target.h. */ | |
262 | ||
263 | bool | |
264 | target_supports_evaluation_of_breakpoint_conditions () | |
265 | { | |
328d42d8 SM |
266 | target_ops *target = current_inferior ()->top_target (); |
267 | ||
268 | return target->supports_evaluation_of_breakpoint_conditions (); | |
d777bf0d SM |
269 | } |
270 | ||
271 | /* See target.h. */ | |
272 | ||
273 | bool | |
274 | target_supports_dumpcore () | |
275 | { | |
328d42d8 | 276 | return current_inferior ()->top_target ()->supports_dumpcore (); |
d777bf0d SM |
277 | } |
278 | ||
279 | /* See target.h. */ | |
280 | ||
281 | void | |
282 | target_dumpcore (const char *filename) | |
283 | { | |
328d42d8 | 284 | return current_inferior ()->top_target ()->dumpcore (filename); |
d777bf0d SM |
285 | } |
286 | ||
287 | /* See target.h. */ | |
288 | ||
289 | bool | |
290 | target_can_run_breakpoint_commands () | |
291 | { | |
328d42d8 | 292 | return current_inferior ()->top_target ()->can_run_breakpoint_commands (); |
d777bf0d SM |
293 | } |
294 | ||
295 | /* See target.h. */ | |
296 | ||
297 | void | |
298 | target_files_info () | |
299 | { | |
328d42d8 | 300 | return current_inferior ()->top_target ()->files_info (); |
d777bf0d SM |
301 | } |
302 | ||
303 | /* See target.h. */ | |
d777bf0d SM |
304 | |
305 | int | |
306 | target_insert_fork_catchpoint (int pid) | |
307 | { | |
328d42d8 | 308 | return current_inferior ()->top_target ()->insert_fork_catchpoint (pid); |
d777bf0d SM |
309 | } |
310 | ||
311 | /* See target.h. */ | |
312 | ||
313 | int | |
314 | target_remove_fork_catchpoint (int pid) | |
315 | { | |
328d42d8 | 316 | return current_inferior ()->top_target ()->remove_fork_catchpoint (pid); |
d777bf0d SM |
317 | } |
318 | ||
319 | /* See target.h. */ | |
320 | ||
321 | int | |
322 | target_insert_vfork_catchpoint (int pid) | |
323 | { | |
328d42d8 | 324 | return current_inferior ()->top_target ()->insert_vfork_catchpoint (pid); |
d777bf0d SM |
325 | } |
326 | ||
327 | /* See target.h. */ | |
328 | ||
329 | int | |
330 | target_remove_vfork_catchpoint (int pid) | |
331 | { | |
328d42d8 | 332 | return current_inferior ()->top_target ()->remove_vfork_catchpoint (pid); |
d777bf0d SM |
333 | } |
334 | ||
335 | /* See target.h. */ | |
336 | ||
337 | int | |
338 | target_insert_exec_catchpoint (int pid) | |
339 | { | |
328d42d8 | 340 | return current_inferior ()->top_target ()->insert_exec_catchpoint (pid); |
d777bf0d SM |
341 | } |
342 | ||
343 | /* See target.h. */ | |
344 | ||
345 | int | |
346 | target_remove_exec_catchpoint (int pid) | |
347 | { | |
328d42d8 | 348 | return current_inferior ()->top_target ()->remove_exec_catchpoint (pid); |
d777bf0d SM |
349 | } |
350 | ||
351 | /* See target.h. */ | |
352 | ||
353 | int | |
354 | target_set_syscall_catchpoint (int pid, bool needed, int any_count, | |
355 | gdb::array_view<const int> syscall_counts) | |
356 | { | |
328d42d8 SM |
357 | target_ops *target = current_inferior ()->top_target (); |
358 | ||
359 | return target->set_syscall_catchpoint (pid, needed, any_count, | |
360 | syscall_counts); | |
d777bf0d SM |
361 | } |
362 | ||
363 | /* See target.h. */ | |
364 | ||
365 | void | |
366 | target_rcmd (const char *command, struct ui_file *outbuf) | |
367 | { | |
328d42d8 | 368 | return current_inferior ()->top_target ()->rcmd (command, outbuf); |
d777bf0d SM |
369 | } |
370 | ||
371 | /* See target.h. */ | |
372 | ||
373 | bool | |
374 | target_can_lock_scheduler () | |
375 | { | |
328d42d8 SM |
376 | target_ops *target = current_inferior ()->top_target (); |
377 | ||
378 | return (target->get_thread_control_capabilities ()& tc_schedlock) != 0; | |
d777bf0d SM |
379 | } |
380 | ||
381 | /* See target.h. */ | |
382 | ||
383 | bool | |
384 | target_can_async_p () | |
385 | { | |
0c1e6e26 AB |
386 | return target_can_async_p (current_inferior ()->top_target ()); |
387 | } | |
388 | ||
389 | /* See target.h. */ | |
390 | ||
391 | bool | |
392 | target_can_async_p (struct target_ops *target) | |
393 | { | |
fce6cd34 AB |
394 | if (!target_async_permitted) |
395 | return false; | |
0c1e6e26 | 396 | return target->can_async_p (); |
d777bf0d SM |
397 | } |
398 | ||
399 | /* See target.h. */ | |
400 | ||
401 | bool | |
402 | target_is_async_p () | |
403 | { | |
bf94662b AB |
404 | bool result = current_inferior ()->top_target ()->is_async_p (); |
405 | gdb_assert (target_async_permitted || !result); | |
406 | return result; | |
d777bf0d SM |
407 | } |
408 | ||
409 | exec_direction_kind | |
410 | target_execution_direction () | |
411 | { | |
328d42d8 | 412 | return current_inferior ()->top_target ()->execution_direction (); |
d777bf0d SM |
413 | } |
414 | ||
415 | /* See target.h. */ | |
416 | ||
417 | const char * | |
418 | target_extra_thread_info (thread_info *tp) | |
419 | { | |
328d42d8 | 420 | return current_inferior ()->top_target ()->extra_thread_info (tp); |
d777bf0d SM |
421 | } |
422 | ||
423 | /* See target.h. */ | |
424 | ||
0e90c441 | 425 | const char * |
d777bf0d SM |
426 | target_pid_to_exec_file (int pid) |
427 | { | |
328d42d8 | 428 | return current_inferior ()->top_target ()->pid_to_exec_file (pid); |
d777bf0d SM |
429 | } |
430 | ||
431 | /* See target.h. */ | |
432 | ||
433 | gdbarch * | |
434 | target_thread_architecture (ptid_t ptid) | |
435 | { | |
328d42d8 | 436 | return current_inferior ()->top_target ()->thread_architecture (ptid); |
d777bf0d SM |
437 | } |
438 | ||
439 | /* See target.h. */ | |
440 | ||
441 | int | |
442 | target_find_memory_regions (find_memory_region_ftype func, void *data) | |
443 | { | |
328d42d8 | 444 | return current_inferior ()->top_target ()->find_memory_regions (func, data); |
d777bf0d SM |
445 | } |
446 | ||
447 | /* See target.h. */ | |
448 | ||
449 | gdb::unique_xmalloc_ptr<char> | |
450 | target_make_corefile_notes (bfd *bfd, int *size_p) | |
451 | { | |
328d42d8 | 452 | return current_inferior ()->top_target ()->make_corefile_notes (bfd, size_p); |
d777bf0d SM |
453 | } |
454 | ||
455 | gdb_byte * | |
456 | target_get_bookmark (const char *args, int from_tty) | |
457 | { | |
328d42d8 | 458 | return current_inferior ()->top_target ()->get_bookmark (args, from_tty); |
d777bf0d SM |
459 | } |
460 | ||
461 | void | |
462 | target_goto_bookmark (const gdb_byte *arg, int from_tty) | |
463 | { | |
328d42d8 | 464 | return current_inferior ()->top_target ()->goto_bookmark (arg, from_tty); |
d777bf0d SM |
465 | } |
466 | ||
467 | /* See target.h. */ | |
468 | ||
469 | bool | |
470 | target_stopped_by_watchpoint () | |
471 | { | |
328d42d8 | 472 | return current_inferior ()->top_target ()->stopped_by_watchpoint (); |
d777bf0d SM |
473 | } |
474 | ||
475 | /* See target.h. */ | |
476 | ||
477 | bool | |
478 | target_stopped_by_sw_breakpoint () | |
479 | { | |
328d42d8 | 480 | return current_inferior ()->top_target ()->stopped_by_sw_breakpoint (); |
d777bf0d SM |
481 | } |
482 | ||
483 | bool | |
484 | target_supports_stopped_by_sw_breakpoint () | |
485 | { | |
328d42d8 SM |
486 | target_ops *target = current_inferior ()->top_target (); |
487 | ||
488 | return target->supports_stopped_by_sw_breakpoint (); | |
d777bf0d SM |
489 | } |
490 | ||
491 | bool | |
492 | target_stopped_by_hw_breakpoint () | |
493 | { | |
328d42d8 | 494 | return current_inferior ()->top_target ()->stopped_by_hw_breakpoint (); |
d777bf0d SM |
495 | } |
496 | ||
497 | bool | |
498 | target_supports_stopped_by_hw_breakpoint () | |
499 | { | |
328d42d8 SM |
500 | target_ops *target = current_inferior ()->top_target (); |
501 | ||
502 | return target->supports_stopped_by_hw_breakpoint (); | |
d777bf0d SM |
503 | } |
504 | ||
505 | /* See target.h. */ | |
506 | ||
507 | bool | |
508 | target_have_steppable_watchpoint () | |
509 | { | |
328d42d8 | 510 | return current_inferior ()->top_target ()->have_steppable_watchpoint (); |
d777bf0d SM |
511 | } |
512 | ||
513 | /* See target.h. */ | |
514 | ||
515 | int | |
516 | target_can_use_hardware_watchpoint (bptype type, int cnt, int othertype) | |
517 | { | |
328d42d8 SM |
518 | target_ops *target = current_inferior ()->top_target (); |
519 | ||
520 | return target->can_use_hw_breakpoint (type, cnt, othertype); | |
d777bf0d SM |
521 | } |
522 | ||
523 | /* See target.h. */ | |
524 | ||
525 | int | |
526 | target_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
527 | { | |
328d42d8 SM |
528 | target_ops *target = current_inferior ()->top_target (); |
529 | ||
530 | return target->region_ok_for_hw_watchpoint (addr, len); | |
d777bf0d SM |
531 | } |
532 | ||
533 | ||
534 | int | |
535 | target_can_do_single_step () | |
536 | { | |
328d42d8 | 537 | return current_inferior ()->top_target ()->can_do_single_step (); |
d777bf0d SM |
538 | } |
539 | ||
540 | /* See target.h. */ | |
541 | ||
542 | int | |
543 | target_insert_watchpoint (CORE_ADDR addr, int len, target_hw_bp_type type, | |
544 | expression *cond) | |
545 | { | |
328d42d8 SM |
546 | target_ops *target = current_inferior ()->top_target (); |
547 | ||
548 | return target->insert_watchpoint (addr, len, type, cond); | |
d777bf0d SM |
549 | } |
550 | ||
551 | /* See target.h. */ | |
552 | ||
553 | int | |
554 | target_remove_watchpoint (CORE_ADDR addr, int len, target_hw_bp_type type, | |
555 | expression *cond) | |
556 | { | |
328d42d8 SM |
557 | target_ops *target = current_inferior ()->top_target (); |
558 | ||
559 | return target->remove_watchpoint (addr, len, type, cond); | |
d777bf0d SM |
560 | } |
561 | ||
562 | /* See target.h. */ | |
563 | ||
564 | int | |
565 | target_insert_hw_breakpoint (gdbarch *gdbarch, bp_target_info *bp_tgt) | |
566 | { | |
328d42d8 SM |
567 | target_ops *target = current_inferior ()->top_target (); |
568 | ||
569 | return target->insert_hw_breakpoint (gdbarch, bp_tgt); | |
d777bf0d SM |
570 | } |
571 | ||
572 | /* See target.h. */ | |
573 | ||
574 | int | |
575 | target_remove_hw_breakpoint (gdbarch *gdbarch, bp_target_info *bp_tgt) | |
576 | { | |
328d42d8 SM |
577 | target_ops *target = current_inferior ()->top_target (); |
578 | ||
579 | return target->remove_hw_breakpoint (gdbarch, bp_tgt); | |
d777bf0d SM |
580 | } |
581 | ||
582 | /* See target.h. */ | |
583 | ||
584 | bool | |
585 | target_can_accel_watchpoint_condition (CORE_ADDR addr, int len, int type, | |
586 | expression *cond) | |
587 | { | |
328d42d8 SM |
588 | target_ops *target = current_inferior ()->top_target (); |
589 | ||
590 | return target->can_accel_watchpoint_condition (addr, len, type, cond); | |
d777bf0d SM |
591 | } |
592 | ||
593 | /* See target.h. */ | |
594 | ||
595 | bool | |
596 | target_can_execute_reverse () | |
597 | { | |
328d42d8 | 598 | return current_inferior ()->top_target ()->can_execute_reverse (); |
d777bf0d SM |
599 | } |
600 | ||
601 | ptid_t | |
c80e29db | 602 | target_get_ada_task_ptid (long lwp, ULONGEST tid) |
d777bf0d | 603 | { |
328d42d8 | 604 | return current_inferior ()->top_target ()->get_ada_task_ptid (lwp, tid); |
d777bf0d SM |
605 | } |
606 | ||
607 | bool | |
608 | target_filesystem_is_local () | |
609 | { | |
328d42d8 | 610 | return current_inferior ()->top_target ()->filesystem_is_local (); |
d777bf0d SM |
611 | } |
612 | ||
613 | void | |
614 | target_trace_init () | |
615 | { | |
328d42d8 | 616 | return current_inferior ()->top_target ()->trace_init (); |
d777bf0d SM |
617 | } |
618 | ||
619 | void | |
620 | target_download_tracepoint (bp_location *location) | |
621 | { | |
328d42d8 | 622 | return current_inferior ()->top_target ()->download_tracepoint (location); |
d777bf0d SM |
623 | } |
624 | ||
625 | bool | |
626 | target_can_download_tracepoint () | |
627 | { | |
328d42d8 | 628 | return current_inferior ()->top_target ()->can_download_tracepoint (); |
d777bf0d SM |
629 | } |
630 | ||
631 | void | |
632 | target_download_trace_state_variable (const trace_state_variable &tsv) | |
633 | { | |
328d42d8 SM |
634 | target_ops *target = current_inferior ()->top_target (); |
635 | ||
636 | return target->download_trace_state_variable (tsv); | |
d777bf0d SM |
637 | } |
638 | ||
639 | void | |
640 | target_enable_tracepoint (bp_location *loc) | |
641 | { | |
328d42d8 | 642 | return current_inferior ()->top_target ()->enable_tracepoint (loc); |
d777bf0d SM |
643 | } |
644 | ||
645 | void | |
646 | target_disable_tracepoint (bp_location *loc) | |
647 | { | |
328d42d8 | 648 | return current_inferior ()->top_target ()->disable_tracepoint (loc); |
d777bf0d SM |
649 | } |
650 | ||
651 | void | |
652 | target_trace_start () | |
653 | { | |
328d42d8 | 654 | return current_inferior ()->top_target ()->trace_start (); |
d777bf0d SM |
655 | } |
656 | ||
657 | void | |
658 | target_trace_set_readonly_regions () | |
659 | { | |
328d42d8 | 660 | return current_inferior ()->top_target ()->trace_set_readonly_regions (); |
d777bf0d SM |
661 | } |
662 | ||
663 | int | |
664 | target_get_trace_status (trace_status *ts) | |
665 | { | |
328d42d8 | 666 | return current_inferior ()->top_target ()->get_trace_status (ts); |
d777bf0d SM |
667 | } |
668 | ||
669 | void | |
670 | target_get_tracepoint_status (breakpoint *tp, uploaded_tp *utp) | |
671 | { | |
328d42d8 | 672 | return current_inferior ()->top_target ()->get_tracepoint_status (tp, utp); |
d777bf0d SM |
673 | } |
674 | ||
675 | void | |
676 | target_trace_stop () | |
677 | { | |
328d42d8 | 678 | return current_inferior ()->top_target ()->trace_stop (); |
d777bf0d SM |
679 | } |
680 | ||
681 | int | |
682 | target_trace_find (trace_find_type type, int num, | |
683 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) | |
684 | { | |
328d42d8 SM |
685 | target_ops *target = current_inferior ()->top_target (); |
686 | ||
687 | return target->trace_find (type, num, addr1, addr2, tpp); | |
d777bf0d SM |
688 | } |
689 | ||
690 | bool | |
691 | target_get_trace_state_variable_value (int tsv, LONGEST *val) | |
692 | { | |
328d42d8 SM |
693 | target_ops *target = current_inferior ()->top_target (); |
694 | ||
695 | return target->get_trace_state_variable_value (tsv, val); | |
d777bf0d SM |
696 | } |
697 | ||
698 | int | |
699 | target_save_trace_data (const char *filename) | |
700 | { | |
328d42d8 | 701 | return current_inferior ()->top_target ()->save_trace_data (filename); |
d777bf0d SM |
702 | } |
703 | ||
704 | int | |
705 | target_upload_tracepoints (uploaded_tp **utpp) | |
706 | { | |
328d42d8 | 707 | return current_inferior ()->top_target ()->upload_tracepoints (utpp); |
d777bf0d SM |
708 | } |
709 | ||
710 | int | |
711 | target_upload_trace_state_variables (uploaded_tsv **utsvp) | |
712 | { | |
328d42d8 SM |
713 | target_ops *target = current_inferior ()->top_target (); |
714 | ||
715 | return target->upload_trace_state_variables (utsvp); | |
d777bf0d SM |
716 | } |
717 | ||
718 | LONGEST | |
719 | target_get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
720 | { | |
328d42d8 SM |
721 | target_ops *target = current_inferior ()->top_target (); |
722 | ||
723 | return target->get_raw_trace_data (buf, offset, len); | |
d777bf0d SM |
724 | } |
725 | ||
726 | int | |
727 | target_get_min_fast_tracepoint_insn_len () | |
728 | { | |
328d42d8 SM |
729 | target_ops *target = current_inferior ()->top_target (); |
730 | ||
731 | return target->get_min_fast_tracepoint_insn_len (); | |
d777bf0d SM |
732 | } |
733 | ||
734 | void | |
735 | target_set_disconnected_tracing (int val) | |
736 | { | |
328d42d8 | 737 | return current_inferior ()->top_target ()->set_disconnected_tracing (val); |
d777bf0d SM |
738 | } |
739 | ||
740 | void | |
741 | target_set_circular_trace_buffer (int val) | |
742 | { | |
328d42d8 | 743 | return current_inferior ()->top_target ()->set_circular_trace_buffer (val); |
d777bf0d SM |
744 | } |
745 | ||
746 | void | |
747 | target_set_trace_buffer_size (LONGEST val) | |
748 | { | |
328d42d8 | 749 | return current_inferior ()->top_target ()->set_trace_buffer_size (val); |
d777bf0d SM |
750 | } |
751 | ||
752 | bool | |
753 | target_set_trace_notes (const char *user, const char *notes, | |
754 | const char *stopnotes) | |
755 | { | |
328d42d8 SM |
756 | target_ops *target = current_inferior ()->top_target (); |
757 | ||
758 | return target->set_trace_notes (user, notes, stopnotes); | |
d777bf0d SM |
759 | } |
760 | ||
761 | bool | |
762 | target_get_tib_address (ptid_t ptid, CORE_ADDR *addr) | |
763 | { | |
328d42d8 | 764 | return current_inferior ()->top_target ()->get_tib_address (ptid, addr); |
d777bf0d SM |
765 | } |
766 | ||
767 | void | |
768 | target_set_permissions () | |
769 | { | |
328d42d8 | 770 | return current_inferior ()->top_target ()->set_permissions (); |
d777bf0d SM |
771 | } |
772 | ||
773 | bool | |
774 | target_static_tracepoint_marker_at (CORE_ADDR addr, | |
775 | static_tracepoint_marker *marker) | |
776 | { | |
328d42d8 SM |
777 | target_ops *target = current_inferior ()->top_target (); |
778 | ||
779 | return target->static_tracepoint_marker_at (addr, marker); | |
d777bf0d SM |
780 | } |
781 | ||
782 | std::vector<static_tracepoint_marker> | |
783 | target_static_tracepoint_markers_by_strid (const char *marker_id) | |
784 | { | |
328d42d8 SM |
785 | target_ops *target = current_inferior ()->top_target (); |
786 | ||
787 | return target->static_tracepoint_markers_by_strid (marker_id); | |
d777bf0d SM |
788 | } |
789 | ||
790 | traceframe_info_up | |
791 | target_traceframe_info () | |
792 | { | |
328d42d8 | 793 | return current_inferior ()->top_target ()->traceframe_info (); |
d777bf0d SM |
794 | } |
795 | ||
796 | bool | |
797 | target_use_agent (bool use) | |
798 | { | |
328d42d8 | 799 | return current_inferior ()->top_target ()->use_agent (use); |
d777bf0d SM |
800 | } |
801 | ||
802 | bool | |
803 | target_can_use_agent () | |
804 | { | |
328d42d8 | 805 | return current_inferior ()->top_target ()->can_use_agent (); |
d777bf0d SM |
806 | } |
807 | ||
808 | bool | |
809 | target_augmented_libraries_svr4_read () | |
810 | { | |
328d42d8 | 811 | return current_inferior ()->top_target ()->augmented_libraries_svr4_read (); |
d777bf0d SM |
812 | } |
813 | ||
814 | bool | |
815 | target_supports_memory_tagging () | |
816 | { | |
328d42d8 | 817 | return current_inferior ()->top_target ()->supports_memory_tagging (); |
d777bf0d SM |
818 | } |
819 | ||
820 | bool | |
821 | target_fetch_memtags (CORE_ADDR address, size_t len, gdb::byte_vector &tags, | |
822 | int type) | |
823 | { | |
328d42d8 | 824 | return current_inferior ()->top_target ()->fetch_memtags (address, len, tags, type); |
d777bf0d SM |
825 | } |
826 | ||
827 | bool | |
828 | target_store_memtags (CORE_ADDR address, size_t len, | |
829 | const gdb::byte_vector &tags, int type) | |
830 | { | |
328d42d8 | 831 | return current_inferior ()->top_target ()->store_memtags (address, len, tags, type); |
d777bf0d SM |
832 | } |
833 | ||
a388ab0b JB |
834 | x86_xsave_layout |
835 | target_fetch_x86_xsave_layout () | |
836 | { | |
837 | return current_inferior ()->top_target ()->fetch_x86_xsave_layout (); | |
838 | } | |
839 | ||
d777bf0d SM |
840 | void |
841 | target_log_command (const char *p) | |
842 | { | |
328d42d8 | 843 | return current_inferior ()->top_target ()->log_command (p); |
d777bf0d SM |
844 | } |
845 | ||
8981c758 TT |
846 | /* This is used to implement the various target commands. */ |
847 | ||
848 | static void | |
eb4c3f4a | 849 | open_target (const char *args, int from_tty, struct cmd_list_element *command) |
8981c758 | 850 | { |
0f8e2034 | 851 | auto *ti = static_cast<target_info *> (command->context ()); |
d9f719f1 | 852 | target_open_ftype *func = target_factories[ti]; |
8981c758 TT |
853 | |
854 | if (targetdebug) | |
6cb06a8c TT |
855 | gdb_printf (gdb_stdlog, "-> %s->open (...)\n", |
856 | ti->shortname); | |
8981c758 | 857 | |
d9f719f1 | 858 | func (args, from_tty); |
8981c758 TT |
859 | |
860 | if (targetdebug) | |
6cb06a8c TT |
861 | gdb_printf (gdb_stdlog, "<- %s->open (%s, %d)\n", |
862 | ti->shortname, args, from_tty); | |
8981c758 TT |
863 | } |
864 | ||
d9f719f1 | 865 | /* See target.h. */ |
c22a2b88 TT |
866 | |
867 | void | |
d9f719f1 PA |
868 | add_target (const target_info &t, target_open_ftype *func, |
869 | completer_ftype *completer) | |
c22a2b88 TT |
870 | { |
871 | struct cmd_list_element *c; | |
872 | ||
d9f719f1 PA |
873 | auto &func_slot = target_factories[&t]; |
874 | if (func_slot != nullptr) | |
f34652de | 875 | internal_error (_("target already added (\"%s\")."), t.shortname); |
d9f719f1 | 876 | func_slot = func; |
c906108c SS |
877 | |
878 | if (targetlist == NULL) | |
3b6acaee | 879 | add_basic_prefix_cmd ("target", class_run, _("\ |
1bedd215 | 880 | Connect to a target machine or process.\n\ |
c906108c SS |
881 | The first argument is the type or protocol of the target machine.\n\ |
882 | Remaining arguments are interpreted by the target protocol. For more\n\ | |
883 | information on the arguments for a particular protocol, type\n\ | |
1bedd215 | 884 | `help target ' followed by the protocol name."), |
2f822da5 | 885 | &targetlist, 0, &cmdlist); |
d9f719f1 | 886 | c = add_cmd (t.shortname, no_class, t.doc, &targetlist); |
0f8e2034 | 887 | c->set_context ((void *) &t); |
5538b03c | 888 | c->func = open_target; |
9852c492 YQ |
889 | if (completer != NULL) |
890 | set_cmd_completer (c, completer); | |
891 | } | |
892 | ||
b48d48eb MM |
893 | /* See target.h. */ |
894 | ||
895 | void | |
d9f719f1 | 896 | add_deprecated_target_alias (const target_info &tinfo, const char *alias) |
b48d48eb MM |
897 | { |
898 | struct cmd_list_element *c; | |
b48d48eb MM |
899 | |
900 | /* If we use add_alias_cmd, here, we do not get the deprecated warning, | |
901 | see PR cli/15104. */ | |
d9f719f1 | 902 | c = add_cmd (alias, no_class, tinfo.doc, &targetlist); |
5538b03c | 903 | c->func = open_target; |
0f8e2034 | 904 | c->set_context ((void *) &tinfo); |
8579fd13 AB |
905 | gdb::unique_xmalloc_ptr<char> alt |
906 | = xstrprintf ("target %s", tinfo.shortname); | |
907 | deprecate_cmd (c, alt.release ()); | |
b48d48eb MM |
908 | } |
909 | ||
c906108c SS |
910 | /* Stub functions */ |
911 | ||
7d85a9c0 JB |
912 | void |
913 | target_kill (void) | |
914 | { | |
ed14d866 SM |
915 | |
916 | /* If the commit_resume_state of the to-be-killed-inferior's process stratum | |
917 | is true, and this inferior is the last live inferior with resumed threads | |
918 | of that target, then we want to leave commit_resume_state to false, as the | |
919 | target won't have any resumed threads anymore. We achieve this with | |
920 | this scoped_disable_commit_resumed. On construction, it will set the flag | |
921 | to false. On destruction, it will only set it to true if there are resumed | |
922 | threads left. */ | |
923 | scoped_disable_commit_resumed disable ("killing"); | |
328d42d8 | 924 | current_inferior ()->top_target ()->kill (); |
7d85a9c0 JB |
925 | } |
926 | ||
11cf8741 | 927 | void |
9cbe5fff | 928 | target_load (const char *arg, int from_tty) |
11cf8741 | 929 | { |
4e5d721f | 930 | target_dcache_invalidate (); |
328d42d8 | 931 | current_inferior ()->top_target ()->load (arg, from_tty); |
11cf8741 JM |
932 | } |
933 | ||
223ffa71 | 934 | /* Define it. */ |
5842f62a | 935 | |
e671cd59 PA |
936 | target_terminal_state target_terminal::m_terminal_state |
937 | = target_terminal_state::is_ours; | |
5842f62a | 938 | |
223ffa71 | 939 | /* See target/target.h. */ |
5842f62a PA |
940 | |
941 | void | |
223ffa71 | 942 | target_terminal::init (void) |
5842f62a | 943 | { |
328d42d8 | 944 | current_inferior ()->top_target ()->terminal_init (); |
5842f62a | 945 | |
e671cd59 | 946 | m_terminal_state = target_terminal_state::is_ours; |
5842f62a PA |
947 | } |
948 | ||
223ffa71 | 949 | /* See target/target.h. */ |
2f99e8fc | 950 | |
d9d2d8b6 | 951 | void |
223ffa71 | 952 | target_terminal::inferior (void) |
d9d2d8b6 | 953 | { |
41fd2b0f PA |
954 | struct ui *ui = current_ui; |
955 | ||
d9d2d8b6 | 956 | /* A background resume (``run&'') should leave GDB in control of the |
3b12939d PA |
957 | terminal. */ |
958 | if (ui->prompt_state != PROMPT_BLOCKED) | |
d9d2d8b6 PA |
959 | return; |
960 | ||
215d3118 PA |
961 | /* Since we always run the inferior in the main console (unless "set |
962 | inferior-tty" is in effect), when some UI other than the main one | |
223ffa71 TT |
963 | calls target_terminal::inferior, then we leave the main UI's |
964 | terminal settings as is. */ | |
215d3118 PA |
965 | if (ui != main_ui) |
966 | return; | |
967 | ||
d9d2d8b6 PA |
968 | /* If GDB is resuming the inferior in the foreground, install |
969 | inferior's terminal modes. */ | |
e671cd59 PA |
970 | |
971 | struct inferior *inf = current_inferior (); | |
972 | ||
973 | if (inf->terminal_state != target_terminal_state::is_inferior) | |
974 | { | |
328d42d8 | 975 | current_inferior ()->top_target ()->terminal_inferior (); |
e671cd59 PA |
976 | inf->terminal_state = target_terminal_state::is_inferior; |
977 | } | |
978 | ||
979 | m_terminal_state = target_terminal_state::is_inferior; | |
980 | ||
981 | /* If the user hit C-c before, pretend that it was hit right | |
982 | here. */ | |
983 | if (check_quit_flag ()) | |
984 | target_pass_ctrlc (); | |
985 | } | |
986 | ||
987 | /* See target/target.h. */ | |
988 | ||
989 | void | |
990 | target_terminal::restore_inferior (void) | |
991 | { | |
992 | struct ui *ui = current_ui; | |
993 | ||
994 | /* See target_terminal::inferior(). */ | |
995 | if (ui->prompt_state != PROMPT_BLOCKED || ui != main_ui) | |
996 | return; | |
997 | ||
998 | /* Restore the terminal settings of inferiors that were in the | |
999 | foreground but are now ours_for_output due to a temporary | |
1000 | target_target::ours_for_output() call. */ | |
1001 | ||
1002 | { | |
1003 | scoped_restore_current_inferior restore_inferior; | |
e671cd59 | 1004 | |
84b68c77 | 1005 | for (::inferior *inf : all_inferiors ()) |
e671cd59 PA |
1006 | { |
1007 | if (inf->terminal_state == target_terminal_state::is_ours_for_output) | |
1008 | { | |
1009 | set_current_inferior (inf); | |
328d42d8 | 1010 | current_inferior ()->top_target ()->terminal_inferior (); |
e671cd59 PA |
1011 | inf->terminal_state = target_terminal_state::is_inferior; |
1012 | } | |
1013 | } | |
1014 | } | |
1015 | ||
1016 | m_terminal_state = target_terminal_state::is_inferior; | |
93692b58 PA |
1017 | |
1018 | /* If the user hit C-c before, pretend that it was hit right | |
1019 | here. */ | |
1020 | if (check_quit_flag ()) | |
1021 | target_pass_ctrlc (); | |
5842f62a PA |
1022 | } |
1023 | ||
e671cd59 PA |
1024 | /* Switch terminal state to DESIRED_STATE, either is_ours, or |
1025 | is_ours_for_output. */ | |
1026 | ||
1027 | static void | |
1028 | target_terminal_is_ours_kind (target_terminal_state desired_state) | |
1029 | { | |
1030 | scoped_restore_current_inferior restore_inferior; | |
e671cd59 PA |
1031 | |
1032 | /* Must do this in two passes. First, have all inferiors save the | |
1033 | current terminal settings. Then, after all inferiors have add a | |
1034 | chance to safely save the terminal settings, restore GDB's | |
1035 | terminal settings. */ | |
1036 | ||
08036331 | 1037 | for (inferior *inf : all_inferiors ()) |
e671cd59 PA |
1038 | { |
1039 | if (inf->terminal_state == target_terminal_state::is_inferior) | |
1040 | { | |
1041 | set_current_inferior (inf); | |
328d42d8 | 1042 | current_inferior ()->top_target ()->terminal_save_inferior (); |
e671cd59 PA |
1043 | } |
1044 | } | |
1045 | ||
08036331 | 1046 | for (inferior *inf : all_inferiors ()) |
e671cd59 PA |
1047 | { |
1048 | /* Note we don't check is_inferior here like above because we | |
1049 | need to handle 'is_ours_for_output -> is_ours' too. Careful | |
1050 | to never transition from 'is_ours' to 'is_ours_for_output', | |
1051 | though. */ | |
1052 | if (inf->terminal_state != target_terminal_state::is_ours | |
1053 | && inf->terminal_state != desired_state) | |
1054 | { | |
1055 | set_current_inferior (inf); | |
1056 | if (desired_state == target_terminal_state::is_ours) | |
328d42d8 | 1057 | current_inferior ()->top_target ()->terminal_ours (); |
e671cd59 | 1058 | else if (desired_state == target_terminal_state::is_ours_for_output) |
328d42d8 | 1059 | current_inferior ()->top_target ()->terminal_ours_for_output (); |
e671cd59 PA |
1060 | else |
1061 | gdb_assert_not_reached ("unhandled desired state"); | |
1062 | inf->terminal_state = desired_state; | |
1063 | } | |
1064 | } | |
1065 | } | |
1066 | ||
223ffa71 | 1067 | /* See target/target.h. */ |
5842f62a PA |
1068 | |
1069 | void | |
223ffa71 | 1070 | target_terminal::ours () |
5842f62a | 1071 | { |
41fd2b0f PA |
1072 | struct ui *ui = current_ui; |
1073 | ||
223ffa71 | 1074 | /* See target_terminal::inferior. */ |
215d3118 PA |
1075 | if (ui != main_ui) |
1076 | return; | |
1077 | ||
e671cd59 | 1078 | if (m_terminal_state == target_terminal_state::is_ours) |
5842f62a PA |
1079 | return; |
1080 | ||
e671cd59 PA |
1081 | target_terminal_is_ours_kind (target_terminal_state::is_ours); |
1082 | m_terminal_state = target_terminal_state::is_ours; | |
5842f62a PA |
1083 | } |
1084 | ||
223ffa71 | 1085 | /* See target/target.h. */ |
5842f62a PA |
1086 | |
1087 | void | |
223ffa71 | 1088 | target_terminal::ours_for_output () |
5842f62a | 1089 | { |
215d3118 PA |
1090 | struct ui *ui = current_ui; |
1091 | ||
223ffa71 | 1092 | /* See target_terminal::inferior. */ |
215d3118 PA |
1093 | if (ui != main_ui) |
1094 | return; | |
1095 | ||
e671cd59 | 1096 | if (!target_terminal::is_inferior ()) |
5842f62a | 1097 | return; |
e671cd59 PA |
1098 | |
1099 | target_terminal_is_ours_kind (target_terminal_state::is_ours_for_output); | |
1100 | target_terminal::m_terminal_state = target_terminal_state::is_ours_for_output; | |
d9d2d8b6 | 1101 | } |
136d6dae | 1102 | |
223ffa71 TT |
1103 | /* See target/target.h. */ |
1104 | ||
1105 | void | |
1106 | target_terminal::info (const char *arg, int from_tty) | |
1107 | { | |
328d42d8 | 1108 | current_inferior ()->top_target ()->terminal_info (arg, from_tty); |
223ffa71 TT |
1109 | } |
1110 | ||
b0ed115f TT |
1111 | /* See target.h. */ |
1112 | ||
20f0d60d | 1113 | bool |
b0ed115f TT |
1114 | target_supports_terminal_ours (void) |
1115 | { | |
5b6d1e4f PA |
1116 | /* The current top target is the target at the top of the target |
1117 | stack of the current inferior. While normally there's always an | |
1118 | inferior, we must check for nullptr here because we can get here | |
1119 | very early during startup, before the initial inferior is first | |
1120 | created. */ | |
1121 | inferior *inf = current_inferior (); | |
20f0d60d | 1122 | |
5b6d1e4f | 1123 | if (inf == nullptr) |
20f0d60d | 1124 | return false; |
5b6d1e4f | 1125 | return inf->top_target ()->supports_terminal_ours (); |
b0ed115f TT |
1126 | } |
1127 | ||
c906108c | 1128 | static void |
fba45db2 | 1129 | tcomplain (void) |
c906108c | 1130 | { |
8a3fe4f8 | 1131 | error (_("You can't do that when your target is `%s'"), |
328d42d8 | 1132 | current_inferior ()->top_target ()->shortname ()); |
c906108c SS |
1133 | } |
1134 | ||
1135 | void | |
fba45db2 | 1136 | noprocess (void) |
c906108c | 1137 | { |
8a3fe4f8 | 1138 | error (_("You can't do that without a process to debug.")); |
c906108c SS |
1139 | } |
1140 | ||
c906108c | 1141 | static void |
0a4f40a2 | 1142 | default_terminal_info (struct target_ops *self, const char *args, int from_tty) |
c906108c | 1143 | { |
6cb06a8c | 1144 | gdb_printf (_("No saved terminal information.\n")); |
c906108c SS |
1145 | } |
1146 | ||
0ef643c8 JB |
1147 | /* A default implementation for the to_get_ada_task_ptid target method. |
1148 | ||
1149 | This function builds the PTID by using both LWP and TID as part of | |
1150 | the PTID lwp and tid elements. The pid used is the pid of the | |
1151 | inferior_ptid. */ | |
1152 | ||
2c0b251b | 1153 | static ptid_t |
c80e29db | 1154 | default_get_ada_task_ptid (struct target_ops *self, long lwp, ULONGEST tid) |
0ef643c8 | 1155 | { |
e99b03dc | 1156 | return ptid_t (inferior_ptid.pid (), lwp, tid); |
0ef643c8 JB |
1157 | } |
1158 | ||
32231432 | 1159 | static enum exec_direction_kind |
4c612759 | 1160 | default_execution_direction (struct target_ops *self) |
32231432 | 1161 | { |
05374cfd | 1162 | if (!target_can_execute_reverse ()) |
32231432 PA |
1163 | return EXEC_FORWARD; |
1164 | else if (!target_can_async_p ()) | |
1165 | return EXEC_FORWARD; | |
1166 | else | |
1167 | gdb_assert_not_reached ("\ | |
1168 | to_execution_direction must be implemented for reverse async"); | |
1169 | } | |
1170 | ||
a1740ee1 | 1171 | /* See target.h. */ |
c906108c | 1172 | |
5b6d1e4f | 1173 | void |
9678f8fe | 1174 | target_ops_ref_policy::decref (target_ops *t) |
5b6d1e4f PA |
1175 | { |
1176 | t->decref (); | |
1177 | if (t->refcount () == 0) | |
121b3efd PA |
1178 | { |
1179 | if (t->stratum () == process_stratum) | |
1180 | connection_list_remove (as_process_stratum_target (t)); | |
57685738 TT |
1181 | |
1182 | for (inferior *inf : all_inferiors ()) | |
1183 | gdb_assert (!inf->target_is_pushed (t)); | |
1184 | ||
1185 | fileio_handles_invalidate_target (t); | |
1186 | ||
1187 | t->close (); | |
1188 | ||
1189 | if (targetdebug) | |
1190 | gdb_printf (gdb_stdlog, "closing target\n"); | |
121b3efd | 1191 | } |
5b6d1e4f PA |
1192 | } |
1193 | ||
1194 | /* See target.h. */ | |
1195 | ||
b26a4dcb | 1196 | void |
a1740ee1 | 1197 | target_stack::push (target_ops *t) |
c906108c | 1198 | { |
91e3d1d1 AB |
1199 | /* We must create a new reference first. It is possible that T is |
1200 | already pushed on this target stack, in which case we will first | |
1201 | unpush it below, before re-pushing it. If we don't increment the | |
1202 | reference count now, then when we unpush it, we might end up deleting | |
1203 | T, which is not good. */ | |
1204 | auto ref = target_ops_ref::new_reference (t); | |
5b6d1e4f | 1205 | |
66b4deae PA |
1206 | strata stratum = t->stratum (); |
1207 | ||
5b6d1e4f PA |
1208 | /* If there's already a target at this stratum, remove it. */ |
1209 | ||
91e3d1d1 AB |
1210 | if (m_stack[stratum].get () != nullptr) |
1211 | unpush (m_stack[stratum].get ()); | |
c906108c | 1212 | |
a1740ee1 | 1213 | /* Now add the new one. */ |
91e3d1d1 | 1214 | m_stack[stratum] = std::move (ref); |
5d502164 | 1215 | |
66b4deae PA |
1216 | if (m_top < stratum) |
1217 | m_top = stratum; | |
91e3d1d1 AB |
1218 | |
1219 | if (stratum == process_stratum) | |
1220 | connection_list_add (as_process_stratum_target (t)); | |
a1740ee1 PA |
1221 | } |
1222 | ||
1223 | /* See target.h. */ | |
c906108c | 1224 | |
a1740ee1 PA |
1225 | bool |
1226 | target_stack::unpush (target_ops *t) | |
c906108c | 1227 | { |
1688cb29 TT |
1228 | gdb_assert (t != NULL); |
1229 | ||
66b4deae PA |
1230 | strata stratum = t->stratum (); |
1231 | ||
1232 | if (stratum == dummy_stratum) | |
f34652de | 1233 | internal_error (_("Attempt to unpush the dummy target")); |
c8d104ad | 1234 | |
a1740ee1 PA |
1235 | /* Look for the specified target. Note that a target can only occur |
1236 | once in the target stack. */ | |
c906108c | 1237 | |
66b4deae | 1238 | if (m_stack[stratum] != t) |
258b763a | 1239 | { |
a1740ee1 PA |
1240 | /* If T wasn't pushed, quit. Only open targets should be |
1241 | closed. */ | |
1242 | return false; | |
258b763a | 1243 | } |
c906108c | 1244 | |
66b4deae | 1245 | if (m_top == stratum) |
bedc4734 | 1246 | m_top = this->find_beneath (t)->stratum (); |
c906108c | 1247 | |
91e3d1d1 AB |
1248 | /* Move the target reference off the target stack, this sets the pointer |
1249 | held in m_stack to nullptr, and places the reference in ref. When | |
1250 | ref goes out of scope its reference count will be decremented, which | |
1251 | might cause the target to close. | |
1252 | ||
1253 | We have to do it this way, and not just set the value in m_stack to | |
1254 | nullptr directly, because doing so would decrement the reference | |
1255 | count first, which might close the target, and closing the target | |
1256 | does a check that the target is not on any inferiors target_stack. */ | |
1257 | auto ref = std::move (m_stack[stratum]); | |
305436e0 | 1258 | |
a1740ee1 | 1259 | return true; |
c906108c SS |
1260 | } |
1261 | ||
fadf6add SM |
1262 | void |
1263 | target_unpusher::operator() (struct target_ops *ops) const | |
1264 | { | |
1265 | current_inferior ()->unpush_target (ops); | |
1266 | } | |
1267 | ||
f0f9ff95 TT |
1268 | /* Default implementation of to_get_thread_local_address. */ |
1269 | ||
1270 | static void | |
1271 | generic_tls_error (void) | |
1272 | { | |
1273 | throw_error (TLS_GENERIC_ERROR, | |
1274 | _("Cannot find thread-local variables on this target")); | |
1275 | } | |
1276 | ||
72f5cf0e | 1277 | /* Using the objfile specified in OBJFILE, find the address for the |
9e35dae4 DJ |
1278 | current thread's thread-local storage with offset OFFSET. */ |
1279 | CORE_ADDR | |
1280 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) | |
1281 | { | |
1282 | volatile CORE_ADDR addr = 0; | |
328d42d8 | 1283 | struct target_ops *target = current_inferior ()->top_target (); |
6e056c81 | 1284 | struct gdbarch *gdbarch = target_gdbarch (); |
9e35dae4 | 1285 | |
4cc98c36 JB |
1286 | /* If OBJFILE is a separate debug object file, look for the |
1287 | original object file. */ | |
1288 | if (objfile->separate_debug_objfile_backlink != NULL) | |
1289 | objfile = objfile->separate_debug_objfile_backlink; | |
1290 | ||
6e056c81 | 1291 | if (gdbarch_fetch_tls_load_module_address_p (gdbarch)) |
9e35dae4 DJ |
1292 | { |
1293 | ptid_t ptid = inferior_ptid; | |
9e35dae4 | 1294 | |
a70b8144 | 1295 | try |
9e35dae4 DJ |
1296 | { |
1297 | CORE_ADDR lm_addr; | |
1298 | ||
1299 | /* Fetch the load module address for this objfile. */ | |
6e056c81 | 1300 | lm_addr = gdbarch_fetch_tls_load_module_address (gdbarch, |
dda83cd7 | 1301 | objfile); |
9e35dae4 | 1302 | |
6e056c81 JB |
1303 | if (gdbarch_get_thread_local_address_p (gdbarch)) |
1304 | addr = gdbarch_get_thread_local_address (gdbarch, ptid, lm_addr, | |
1305 | offset); | |
1306 | else | |
1307 | addr = target->get_thread_local_address (ptid, lm_addr, offset); | |
9e35dae4 DJ |
1308 | } |
1309 | /* If an error occurred, print TLS related messages here. Otherwise, | |
dda83cd7 | 1310 | throw the error to some higher catcher. */ |
230d2906 | 1311 | catch (const gdb_exception &ex) |
9e35dae4 DJ |
1312 | { |
1313 | int objfile_is_library = (objfile->flags & OBJF_SHARED); | |
1314 | ||
1315 | switch (ex.error) | |
1316 | { | |
1317 | case TLS_NO_LIBRARY_SUPPORT_ERROR: | |
3e43a32a MS |
1318 | error (_("Cannot find thread-local variables " |
1319 | "in this thread library.")); | |
9e35dae4 DJ |
1320 | break; |
1321 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: | |
1322 | if (objfile_is_library) | |
1323 | error (_("Cannot find shared library `%s' in dynamic" | |
dda83cd7 | 1324 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
1325 | else |
1326 | error (_("Cannot find executable file `%s' in dynamic" | |
dda83cd7 | 1327 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
1328 | break; |
1329 | case TLS_NOT_ALLOCATED_YET_ERROR: | |
1330 | if (objfile_is_library) | |
1331 | error (_("The inferior has not yet allocated storage for" | |
dda83cd7 SM |
1332 | " thread-local variables in\n" |
1333 | "the shared library `%s'\n" | |
1334 | "for %s"), | |
a068643d TT |
1335 | objfile_name (objfile), |
1336 | target_pid_to_str (ptid).c_str ()); | |
9e35dae4 DJ |
1337 | else |
1338 | error (_("The inferior has not yet allocated storage for" | |
dda83cd7 SM |
1339 | " thread-local variables in\n" |
1340 | "the executable `%s'\n" | |
1341 | "for %s"), | |
a068643d TT |
1342 | objfile_name (objfile), |
1343 | target_pid_to_str (ptid).c_str ()); | |
9e35dae4 DJ |
1344 | break; |
1345 | case TLS_GENERIC_ERROR: | |
1346 | if (objfile_is_library) | |
1347 | error (_("Cannot find thread-local storage for %s, " | |
dda83cd7 | 1348 | "shared library %s:\n%s"), |
a068643d | 1349 | target_pid_to_str (ptid).c_str (), |
3d6e9d23 | 1350 | objfile_name (objfile), ex.what ()); |
9e35dae4 DJ |
1351 | else |
1352 | error (_("Cannot find thread-local storage for %s, " | |
dda83cd7 | 1353 | "executable file %s:\n%s"), |
a068643d | 1354 | target_pid_to_str (ptid).c_str (), |
3d6e9d23 | 1355 | objfile_name (objfile), ex.what ()); |
9e35dae4 DJ |
1356 | break; |
1357 | default: | |
eedc3f4f | 1358 | throw; |
9e35dae4 DJ |
1359 | break; |
1360 | } | |
1361 | } | |
1362 | } | |
9e35dae4 DJ |
1363 | else |
1364 | error (_("Cannot find thread-local variables on this target")); | |
1365 | ||
1366 | return addr; | |
1367 | } | |
1368 | ||
6be7b56e | 1369 | const char * |
01cb8804 | 1370 | target_xfer_status_to_string (enum target_xfer_status status) |
6be7b56e PA |
1371 | { |
1372 | #define CASE(X) case X: return #X | |
01cb8804 | 1373 | switch (status) |
6be7b56e PA |
1374 | { |
1375 | CASE(TARGET_XFER_E_IO); | |
bc113b4e | 1376 | CASE(TARGET_XFER_UNAVAILABLE); |
6be7b56e PA |
1377 | default: |
1378 | return "<unknown>"; | |
1379 | } | |
1380 | #undef CASE | |
1381 | }; | |
1382 | ||
1383 | ||
19cf757a | 1384 | const target_section_table * |
07b82ea5 PA |
1385 | target_get_section_table (struct target_ops *target) |
1386 | { | |
f6ac5f3d | 1387 | return target->get_section_table (); |
07b82ea5 PA |
1388 | } |
1389 | ||
8db32d44 | 1390 | /* Find a section containing ADDR. */ |
07b82ea5 | 1391 | |
19cf757a | 1392 | const struct target_section * |
8db32d44 AC |
1393 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
1394 | { | |
19cf757a | 1395 | const target_section_table *table = target_get_section_table (target); |
07b82ea5 PA |
1396 | |
1397 | if (table == NULL) | |
1398 | return NULL; | |
1399 | ||
19cf757a | 1400 | for (const target_section &secp : *table) |
8db32d44 | 1401 | { |
bb2a6777 TT |
1402 | if (addr >= secp.addr && addr < secp.endaddr) |
1403 | return &secp; | |
8db32d44 AC |
1404 | } |
1405 | return NULL; | |
1406 | } | |
1407 | ||
336aa7b7 AB |
1408 | /* See target.h. */ |
1409 | ||
1410 | const target_section_table * | |
1411 | default_get_section_table () | |
1412 | { | |
1413 | return ¤t_program_space->target_sections (); | |
1414 | } | |
0fec99e8 PA |
1415 | |
1416 | /* Helper for the memory xfer routines. Checks the attributes of the | |
1417 | memory region of MEMADDR against the read or write being attempted. | |
1418 | If the access is permitted returns true, otherwise returns false. | |
1419 | REGION_P is an optional output parameter. If not-NULL, it is | |
1420 | filled with a pointer to the memory region of MEMADDR. REG_LEN | |
1421 | returns LEN trimmed to the end of the region. This is how much the | |
1422 | caller can continue requesting, if the access is permitted. A | |
1423 | single xfer request must not straddle memory region boundaries. */ | |
1424 | ||
1425 | static int | |
1426 | memory_xfer_check_region (gdb_byte *readbuf, const gdb_byte *writebuf, | |
1427 | ULONGEST memaddr, ULONGEST len, ULONGEST *reg_len, | |
1428 | struct mem_region **region_p) | |
1429 | { | |
1430 | struct mem_region *region; | |
1431 | ||
1432 | region = lookup_mem_region (memaddr); | |
1433 | ||
1434 | if (region_p != NULL) | |
1435 | *region_p = region; | |
1436 | ||
1437 | switch (region->attrib.mode) | |
1438 | { | |
1439 | case MEM_RO: | |
1440 | if (writebuf != NULL) | |
1441 | return 0; | |
1442 | break; | |
1443 | ||
1444 | case MEM_WO: | |
1445 | if (readbuf != NULL) | |
1446 | return 0; | |
1447 | break; | |
1448 | ||
1449 | case MEM_FLASH: | |
1450 | /* We only support writing to flash during "load" for now. */ | |
1451 | if (writebuf != NULL) | |
1452 | error (_("Writing to flash memory forbidden in this context")); | |
1453 | break; | |
1454 | ||
1455 | case MEM_NONE: | |
1456 | return 0; | |
1457 | } | |
1458 | ||
1459 | /* region->hi == 0 means there's no upper bound. */ | |
1460 | if (memaddr + len < region->hi || region->hi == 0) | |
1461 | *reg_len = len; | |
1462 | else | |
1463 | *reg_len = region->hi - memaddr; | |
1464 | ||
1465 | return 1; | |
1466 | } | |
1467 | ||
9f713294 YQ |
1468 | /* Read memory from more than one valid target. A core file, for |
1469 | instance, could have some of memory but delegate other bits to | |
1470 | the target below it. So, we must manually try all targets. */ | |
1471 | ||
cc9f16aa | 1472 | enum target_xfer_status |
17fde6d0 | 1473 | raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf, |
9b409511 YQ |
1474 | const gdb_byte *writebuf, ULONGEST memaddr, LONGEST len, |
1475 | ULONGEST *xfered_len) | |
9f713294 | 1476 | { |
9b409511 | 1477 | enum target_xfer_status res; |
9f713294 YQ |
1478 | |
1479 | do | |
1480 | { | |
f6ac5f3d PA |
1481 | res = ops->xfer_partial (TARGET_OBJECT_MEMORY, NULL, |
1482 | readbuf, writebuf, memaddr, len, | |
1483 | xfered_len); | |
9b409511 | 1484 | if (res == TARGET_XFER_OK) |
9f713294 YQ |
1485 | break; |
1486 | ||
633785ff | 1487 | /* Stop if the target reports that the memory is not available. */ |
bc113b4e | 1488 | if (res == TARGET_XFER_UNAVAILABLE) |
633785ff MM |
1489 | break; |
1490 | ||
2735d421 | 1491 | /* Don't continue past targets which have all the memory. |
dda83cd7 | 1492 | At one time, this code was necessary to read data from |
2735d421 KB |
1493 | executables / shared libraries when data for the requested |
1494 | addresses weren't available in the core file. But now the | |
1495 | core target handles this case itself. */ | |
f6ac5f3d | 1496 | if (ops->has_all_memory ()) |
9f713294 YQ |
1497 | break; |
1498 | ||
b6a8c27b | 1499 | ops = ops->beneath (); |
9f713294 YQ |
1500 | } |
1501 | while (ops != NULL); | |
1502 | ||
0f26cec1 PA |
1503 | /* The cache works at the raw memory level. Make sure the cache |
1504 | gets updated with raw contents no matter what kind of memory | |
1505 | object was originally being written. Note we do write-through | |
1506 | first, so that if it fails, we don't write to the cache contents | |
1507 | that never made it to the target. */ | |
1508 | if (writebuf != NULL | |
d7e15655 | 1509 | && inferior_ptid != null_ptid |
0f26cec1 PA |
1510 | && target_dcache_init_p () |
1511 | && (stack_cache_enabled_p () || code_cache_enabled_p ())) | |
1512 | { | |
1513 | DCACHE *dcache = target_dcache_get (); | |
1514 | ||
1515 | /* Note that writing to an area of memory which wasn't present | |
1516 | in the cache doesn't cause it to be loaded in. */ | |
1517 | dcache_update (dcache, res, memaddr, writebuf, *xfered_len); | |
1518 | } | |
1519 | ||
9f713294 YQ |
1520 | return res; |
1521 | } | |
1522 | ||
7f79c47e DE |
1523 | /* Perform a partial memory transfer. |
1524 | For docs see target.h, to_xfer_partial. */ | |
cf7a04e8 | 1525 | |
9b409511 | 1526 | static enum target_xfer_status |
f0ba3972 | 1527 | memory_xfer_partial_1 (struct target_ops *ops, enum target_object object, |
17fde6d0 | 1528 | gdb_byte *readbuf, const gdb_byte *writebuf, ULONGEST memaddr, |
9b409511 | 1529 | ULONGEST len, ULONGEST *xfered_len) |
0779438d | 1530 | { |
9b409511 | 1531 | enum target_xfer_status res; |
0fec99e8 | 1532 | ULONGEST reg_len; |
cf7a04e8 | 1533 | struct mem_region *region; |
4e5d721f | 1534 | struct inferior *inf; |
cf7a04e8 | 1535 | |
07b82ea5 PA |
1536 | /* For accesses to unmapped overlay sections, read directly from |
1537 | files. Must do this first, as MEMADDR may need adjustment. */ | |
1538 | if (readbuf != NULL && overlay_debugging) | |
1539 | { | |
1540 | struct obj_section *section = find_pc_overlay (memaddr); | |
5d502164 | 1541 | |
07b82ea5 PA |
1542 | if (pc_in_unmapped_range (memaddr, section)) |
1543 | { | |
19cf757a | 1544 | const target_section_table *table = target_get_section_table (ops); |
07b82ea5 | 1545 | const char *section_name = section->the_bfd_section->name; |
5d502164 | 1546 | |
07b82ea5 | 1547 | memaddr = overlay_mapped_address (memaddr, section); |
e56cb451 KB |
1548 | |
1549 | auto match_cb = [=] (const struct target_section *s) | |
1550 | { | |
1551 | return (strcmp (section_name, s->the_bfd_section->name) == 0); | |
1552 | }; | |
1553 | ||
07b82ea5 | 1554 | return section_table_xfer_memory_partial (readbuf, writebuf, |
9b409511 | 1555 | memaddr, len, xfered_len, |
bb2a6777 | 1556 | *table, match_cb); |
07b82ea5 PA |
1557 | } |
1558 | } | |
1559 | ||
1560 | /* Try the executable files, if "trust-readonly-sections" is set. */ | |
cf7a04e8 DJ |
1561 | if (readbuf != NULL && trust_readonly) |
1562 | { | |
19cf757a AB |
1563 | const struct target_section *secp |
1564 | = target_section_by_addr (ops, memaddr); | |
cf7a04e8 | 1565 | if (secp != NULL |
fd361982 | 1566 | && (bfd_section_flags (secp->the_bfd_section) & SEC_READONLY)) |
07b82ea5 | 1567 | { |
19cf757a | 1568 | const target_section_table *table = target_get_section_table (ops); |
07b82ea5 | 1569 | return section_table_xfer_memory_partial (readbuf, writebuf, |
9b409511 | 1570 | memaddr, len, xfered_len, |
bb2a6777 | 1571 | *table); |
07b82ea5 | 1572 | } |
98646950 UW |
1573 | } |
1574 | ||
cf7a04e8 | 1575 | /* Try GDB's internal data cache. */ |
cf7a04e8 | 1576 | |
0fec99e8 PA |
1577 | if (!memory_xfer_check_region (readbuf, writebuf, memaddr, len, ®_len, |
1578 | ®ion)) | |
1579 | return TARGET_XFER_E_IO; | |
cf7a04e8 | 1580 | |
d7e15655 | 1581 | if (inferior_ptid != null_ptid) |
00431a78 | 1582 | inf = current_inferior (); |
6c95b8df PA |
1583 | else |
1584 | inf = NULL; | |
4e5d721f DE |
1585 | |
1586 | if (inf != NULL | |
0f26cec1 | 1587 | && readbuf != NULL |
2f4d8875 PA |
1588 | /* The dcache reads whole cache lines; that doesn't play well |
1589 | with reading from a trace buffer, because reading outside of | |
1590 | the collected memory range fails. */ | |
1591 | && get_traceframe_number () == -1 | |
4e5d721f | 1592 | && (region->attrib.cache |
29453a14 YQ |
1593 | || (stack_cache_enabled_p () && object == TARGET_OBJECT_STACK_MEMORY) |
1594 | || (code_cache_enabled_p () && object == TARGET_OBJECT_CODE_MEMORY))) | |
cf7a04e8 | 1595 | { |
2a2f9fe4 YQ |
1596 | DCACHE *dcache = target_dcache_get_or_init (); |
1597 | ||
0f26cec1 PA |
1598 | return dcache_read_memory_partial (ops, dcache, memaddr, readbuf, |
1599 | reg_len, xfered_len); | |
cf7a04e8 DJ |
1600 | } |
1601 | ||
1602 | /* If none of those methods found the memory we wanted, fall back | |
1603 | to a target partial transfer. Normally a single call to | |
1604 | to_xfer_partial is enough; if it doesn't recognize an object | |
1605 | it will call the to_xfer_partial of the next target down. | |
1606 | But for memory this won't do. Memory is the only target | |
9b409511 YQ |
1607 | object which can be read from more than one valid target. |
1608 | A core file, for instance, could have some of memory but | |
1609 | delegate other bits to the target below it. So, we must | |
1610 | manually try all targets. */ | |
1611 | ||
1612 | res = raw_memory_xfer_partial (ops, readbuf, writebuf, memaddr, reg_len, | |
1613 | xfered_len); | |
cf7a04e8 DJ |
1614 | |
1615 | /* If we still haven't got anything, return the last error. We | |
1616 | give up. */ | |
1617 | return res; | |
0779438d AC |
1618 | } |
1619 | ||
f0ba3972 PA |
1620 | /* Perform a partial memory transfer. For docs see target.h, |
1621 | to_xfer_partial. */ | |
1622 | ||
9b409511 | 1623 | static enum target_xfer_status |
f0ba3972 | 1624 | memory_xfer_partial (struct target_ops *ops, enum target_object object, |
9b409511 YQ |
1625 | gdb_byte *readbuf, const gdb_byte *writebuf, |
1626 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) | |
f0ba3972 | 1627 | { |
9b409511 | 1628 | enum target_xfer_status res; |
f0ba3972 PA |
1629 | |
1630 | /* Zero length requests are ok and require no work. */ | |
1631 | if (len == 0) | |
9b409511 | 1632 | return TARGET_XFER_EOF; |
f0ba3972 | 1633 | |
d88cb738 | 1634 | memaddr = gdbarch_remove_non_address_bits (target_gdbarch (), memaddr); |
a738ea1d | 1635 | |
f0ba3972 PA |
1636 | /* Fill in READBUF with breakpoint shadows, or WRITEBUF with |
1637 | breakpoint insns, thus hiding out from higher layers whether | |
1638 | there are software breakpoints inserted in the code stream. */ | |
1639 | if (readbuf != NULL) | |
1640 | { | |
9b409511 YQ |
1641 | res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len, |
1642 | xfered_len); | |
f0ba3972 | 1643 | |
9b409511 | 1644 | if (res == TARGET_XFER_OK && !show_memory_breakpoints) |
c63528fc | 1645 | breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, *xfered_len); |
f0ba3972 PA |
1646 | } |
1647 | else | |
1648 | { | |
67c059c2 AB |
1649 | /* A large write request is likely to be partially satisfied |
1650 | by memory_xfer_partial_1. We will continually malloc | |
1651 | and free a copy of the entire write request for breakpoint | |
1652 | shadow handling even though we only end up writing a small | |
09c98b44 DB |
1653 | subset of it. Cap writes to a limit specified by the target |
1654 | to mitigate this. */ | |
f6ac5f3d | 1655 | len = std::min (ops->get_memory_xfer_limit (), len); |
67c059c2 | 1656 | |
26fcd5d7 TT |
1657 | gdb::byte_vector buf (writebuf, writebuf + len); |
1658 | breakpoint_xfer_memory (NULL, buf.data (), writebuf, memaddr, len); | |
1659 | res = memory_xfer_partial_1 (ops, object, NULL, buf.data (), memaddr, len, | |
9b409511 | 1660 | xfered_len); |
f0ba3972 PA |
1661 | } |
1662 | ||
1663 | return res; | |
1664 | } | |
1665 | ||
cb85b21b TT |
1666 | scoped_restore_tmpl<int> |
1667 | make_scoped_restore_show_memory_breakpoints (int show) | |
8defab1a | 1668 | { |
cb85b21b | 1669 | return make_scoped_restore (&show_memory_breakpoints, show); |
8defab1a DJ |
1670 | } |
1671 | ||
7f79c47e DE |
1672 | /* For docs see target.h, to_xfer_partial. */ |
1673 | ||
9b409511 | 1674 | enum target_xfer_status |
27394598 AC |
1675 | target_xfer_partial (struct target_ops *ops, |
1676 | enum target_object object, const char *annex, | |
4ac248ca | 1677 | gdb_byte *readbuf, const gdb_byte *writebuf, |
9b409511 YQ |
1678 | ULONGEST offset, ULONGEST len, |
1679 | ULONGEST *xfered_len) | |
27394598 | 1680 | { |
9b409511 | 1681 | enum target_xfer_status retval; |
27394598 | 1682 | |
ce6d0892 YQ |
1683 | /* Transfer is done when LEN is zero. */ |
1684 | if (len == 0) | |
9b409511 | 1685 | return TARGET_XFER_EOF; |
ce6d0892 | 1686 | |
d914c394 SS |
1687 | if (writebuf && !may_write_memory) |
1688 | error (_("Writing to memory is not allowed (addr %s, len %s)"), | |
1689 | core_addr_to_string_nz (offset), plongest (len)); | |
1690 | ||
9b409511 YQ |
1691 | *xfered_len = 0; |
1692 | ||
cf7a04e8 DJ |
1693 | /* If this is a memory transfer, let the memory-specific code |
1694 | have a look at it instead. Memory transfers are more | |
1695 | complicated. */ | |
29453a14 YQ |
1696 | if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY |
1697 | || object == TARGET_OBJECT_CODE_MEMORY) | |
4e5d721f | 1698 | retval = memory_xfer_partial (ops, object, readbuf, |
9b409511 | 1699 | writebuf, offset, len, xfered_len); |
9f713294 | 1700 | else if (object == TARGET_OBJECT_RAW_MEMORY) |
cf7a04e8 | 1701 | { |
0fec99e8 PA |
1702 | /* Skip/avoid accessing the target if the memory region |
1703 | attributes block the access. Check this here instead of in | |
1704 | raw_memory_xfer_partial as otherwise we'd end up checking | |
1705 | this twice in the case of the memory_xfer_partial path is | |
1706 | taken; once before checking the dcache, and another in the | |
1707 | tail call to raw_memory_xfer_partial. */ | |
1708 | if (!memory_xfer_check_region (readbuf, writebuf, offset, len, &len, | |
1709 | NULL)) | |
1710 | return TARGET_XFER_E_IO; | |
1711 | ||
9f713294 | 1712 | /* Request the normal memory object from other layers. */ |
9b409511 YQ |
1713 | retval = raw_memory_xfer_partial (ops, readbuf, writebuf, offset, len, |
1714 | xfered_len); | |
cf7a04e8 | 1715 | } |
9f713294 | 1716 | else |
f6ac5f3d PA |
1717 | retval = ops->xfer_partial (object, annex, readbuf, |
1718 | writebuf, offset, len, xfered_len); | |
cf7a04e8 | 1719 | |
27394598 AC |
1720 | if (targetdebug) |
1721 | { | |
1722 | const unsigned char *myaddr = NULL; | |
1723 | ||
6cb06a8c TT |
1724 | gdb_printf (gdb_stdlog, |
1725 | "%s:target_xfer_partial " | |
1726 | "(%d, %s, %s, %s, %s, %s) = %d, %s", | |
1727 | ops->shortname (), | |
1728 | (int) object, | |
1729 | (annex ? annex : "(null)"), | |
1730 | host_address_to_string (readbuf), | |
1731 | host_address_to_string (writebuf), | |
1732 | core_addr_to_string_nz (offset), | |
1733 | pulongest (len), retval, | |
1734 | pulongest (*xfered_len)); | |
27394598 AC |
1735 | |
1736 | if (readbuf) | |
1737 | myaddr = readbuf; | |
1738 | if (writebuf) | |
1739 | myaddr = writebuf; | |
9b409511 | 1740 | if (retval == TARGET_XFER_OK && myaddr != NULL) |
27394598 AC |
1741 | { |
1742 | int i; | |
2bc416ba | 1743 | |
0426ad51 | 1744 | gdb_puts (", bytes =", gdb_stdlog); |
9b409511 | 1745 | for (i = 0; i < *xfered_len; i++) |
27394598 | 1746 | { |
53b71562 | 1747 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1748 | { |
1749 | if (targetdebug < 2 && i > 0) | |
1750 | { | |
6cb06a8c | 1751 | gdb_printf (gdb_stdlog, " ..."); |
27394598 AC |
1752 | break; |
1753 | } | |
6cb06a8c | 1754 | gdb_printf (gdb_stdlog, "\n"); |
27394598 | 1755 | } |
2bc416ba | 1756 | |
6cb06a8c | 1757 | gdb_printf (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
27394598 AC |
1758 | } |
1759 | } | |
2bc416ba | 1760 | |
a11ac3b3 | 1761 | gdb_putc ('\n', gdb_stdlog); |
27394598 | 1762 | } |
9b409511 YQ |
1763 | |
1764 | /* Check implementations of to_xfer_partial update *XFERED_LEN | |
1765 | properly. Do assertion after printing debug messages, so that we | |
1766 | can find more clues on assertion failure from debugging messages. */ | |
bc113b4e | 1767 | if (retval == TARGET_XFER_OK || retval == TARGET_XFER_UNAVAILABLE) |
9b409511 YQ |
1768 | gdb_assert (*xfered_len > 0); |
1769 | ||
27394598 AC |
1770 | return retval; |
1771 | } | |
1772 | ||
578d3588 PA |
1773 | /* Read LEN bytes of target memory at address MEMADDR, placing the |
1774 | results in GDB's memory at MYADDR. Returns either 0 for success or | |
d09f2c3f | 1775 | -1 if any error occurs. |
c906108c SS |
1776 | |
1777 | If an error occurs, no guarantee is made about the contents of the data at | |
1778 | MYADDR. In particular, the caller should not depend upon partial reads | |
1779 | filling the buffer with good data. There is no way for the caller to know | |
1780 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 | 1781 | deal with partial reads should call target_read (which will retry until |
c378eb4e | 1782 | it makes no progress, and then return how much was transferred). */ |
c906108c SS |
1783 | |
1784 | int | |
1b162304 | 1785 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
c906108c | 1786 | { |
328d42d8 SM |
1787 | if (target_read (current_inferior ()->top_target (), |
1788 | TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1789 | myaddr, memaddr, len) == len) |
1790 | return 0; | |
0779438d | 1791 | else |
d09f2c3f | 1792 | return -1; |
c906108c SS |
1793 | } |
1794 | ||
721ec300 GB |
1795 | /* See target/target.h. */ |
1796 | ||
1797 | int | |
1798 | target_read_uint32 (CORE_ADDR memaddr, uint32_t *result) | |
1799 | { | |
1800 | gdb_byte buf[4]; | |
1801 | int r; | |
1802 | ||
1803 | r = target_read_memory (memaddr, buf, sizeof buf); | |
1804 | if (r != 0) | |
1805 | return r; | |
1806 | *result = extract_unsigned_integer (buf, sizeof buf, | |
1807 | gdbarch_byte_order (target_gdbarch ())); | |
1808 | return 0; | |
1809 | } | |
1810 | ||
aee4bf85 PA |
1811 | /* Like target_read_memory, but specify explicitly that this is a read |
1812 | from the target's raw memory. That is, this read bypasses the | |
1813 | dcache, breakpoint shadowing, etc. */ | |
1814 | ||
1815 | int | |
1816 | target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1817 | { | |
328d42d8 SM |
1818 | if (target_read (current_inferior ()->top_target (), |
1819 | TARGET_OBJECT_RAW_MEMORY, NULL, | |
aee4bf85 PA |
1820 | myaddr, memaddr, len) == len) |
1821 | return 0; | |
1822 | else | |
d09f2c3f | 1823 | return -1; |
aee4bf85 PA |
1824 | } |
1825 | ||
4e5d721f DE |
1826 | /* Like target_read_memory, but specify explicitly that this is a read from |
1827 | the target's stack. This may trigger different cache behavior. */ | |
1828 | ||
1829 | int | |
45aa4659 | 1830 | target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
4e5d721f | 1831 | { |
328d42d8 SM |
1832 | if (target_read (current_inferior ()->top_target (), |
1833 | TARGET_OBJECT_STACK_MEMORY, NULL, | |
4e5d721f DE |
1834 | myaddr, memaddr, len) == len) |
1835 | return 0; | |
1836 | else | |
d09f2c3f | 1837 | return -1; |
4e5d721f DE |
1838 | } |
1839 | ||
29453a14 YQ |
1840 | /* Like target_read_memory, but specify explicitly that this is a read from |
1841 | the target's code. This may trigger different cache behavior. */ | |
1842 | ||
1843 | int | |
1844 | target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1845 | { | |
328d42d8 SM |
1846 | if (target_read (current_inferior ()->top_target (), |
1847 | TARGET_OBJECT_CODE_MEMORY, NULL, | |
29453a14 YQ |
1848 | myaddr, memaddr, len) == len) |
1849 | return 0; | |
1850 | else | |
d09f2c3f | 1851 | return -1; |
29453a14 YQ |
1852 | } |
1853 | ||
7f79c47e | 1854 | /* Write LEN bytes from MYADDR to target memory at address MEMADDR. |
d09f2c3f PA |
1855 | Returns either 0 for success or -1 if any error occurs. If an |
1856 | error occurs, no guarantee is made about how much data got written. | |
1857 | Callers that can deal with partial writes should call | |
1858 | target_write. */ | |
7f79c47e | 1859 | |
c906108c | 1860 | int |
45aa4659 | 1861 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
c906108c | 1862 | { |
328d42d8 SM |
1863 | if (target_write (current_inferior ()->top_target (), |
1864 | TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1865 | myaddr, memaddr, len) == len) |
1866 | return 0; | |
0779438d | 1867 | else |
d09f2c3f | 1868 | return -1; |
c906108c | 1869 | } |
c5aa993b | 1870 | |
f0ba3972 | 1871 | /* Write LEN bytes from MYADDR to target raw memory at address |
d09f2c3f PA |
1872 | MEMADDR. Returns either 0 for success or -1 if any error occurs. |
1873 | If an error occurs, no guarantee is made about how much data got | |
1874 | written. Callers that can deal with partial writes should call | |
1875 | target_write. */ | |
f0ba3972 PA |
1876 | |
1877 | int | |
45aa4659 | 1878 | target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
f0ba3972 | 1879 | { |
328d42d8 SM |
1880 | if (target_write (current_inferior ()->top_target (), |
1881 | TARGET_OBJECT_RAW_MEMORY, NULL, | |
f0ba3972 PA |
1882 | myaddr, memaddr, len) == len) |
1883 | return 0; | |
1884 | else | |
d09f2c3f | 1885 | return -1; |
f0ba3972 PA |
1886 | } |
1887 | ||
fd79ecee DJ |
1888 | /* Fetch the target's memory map. */ |
1889 | ||
a664f67e | 1890 | std::vector<mem_region> |
fd79ecee DJ |
1891 | target_memory_map (void) |
1892 | { | |
328d42d8 SM |
1893 | target_ops *target = current_inferior ()->top_target (); |
1894 | std::vector<mem_region> result = target->memory_map (); | |
a664f67e SM |
1895 | if (result.empty ()) |
1896 | return result; | |
fd79ecee | 1897 | |
a664f67e | 1898 | std::sort (result.begin (), result.end ()); |
fd79ecee DJ |
1899 | |
1900 | /* Check that regions do not overlap. Simultaneously assign | |
1901 | a numbering for the "mem" commands to use to refer to | |
1902 | each region. */ | |
a664f67e SM |
1903 | mem_region *last_one = NULL; |
1904 | for (size_t ix = 0; ix < result.size (); ix++) | |
fd79ecee | 1905 | { |
a664f67e | 1906 | mem_region *this_one = &result[ix]; |
fd79ecee DJ |
1907 | this_one->number = ix; |
1908 | ||
a664f67e | 1909 | if (last_one != NULL && last_one->hi > this_one->lo) |
fd79ecee DJ |
1910 | { |
1911 | warning (_("Overlapping regions in memory map: ignoring")); | |
a664f67e | 1912 | return std::vector<mem_region> (); |
fd79ecee | 1913 | } |
a664f67e | 1914 | |
fd79ecee DJ |
1915 | last_one = this_one; |
1916 | } | |
1917 | ||
1918 | return result; | |
1919 | } | |
1920 | ||
a76d924d DJ |
1921 | void |
1922 | target_flash_erase (ULONGEST address, LONGEST length) | |
1923 | { | |
328d42d8 | 1924 | current_inferior ()->top_target ()->flash_erase (address, length); |
a76d924d DJ |
1925 | } |
1926 | ||
1927 | void | |
1928 | target_flash_done (void) | |
1929 | { | |
328d42d8 | 1930 | current_inferior ()->top_target ()->flash_done (); |
a76d924d DJ |
1931 | } |
1932 | ||
920d2a44 AC |
1933 | static void |
1934 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1935 | struct cmd_list_element *c, const char *value) | |
1936 | { | |
6cb06a8c TT |
1937 | gdb_printf (file, |
1938 | _("Mode for reading from readonly sections is %s.\n"), | |
1939 | value); | |
920d2a44 | 1940 | } |
3a11626d | 1941 | |
7f79c47e | 1942 | /* Target vector read/write partial wrapper functions. */ |
0088c768 | 1943 | |
9b409511 | 1944 | static enum target_xfer_status |
1e3ff5ad AC |
1945 | target_read_partial (struct target_ops *ops, |
1946 | enum target_object object, | |
1b0ba102 | 1947 | const char *annex, gdb_byte *buf, |
9b409511 YQ |
1948 | ULONGEST offset, ULONGEST len, |
1949 | ULONGEST *xfered_len) | |
1e3ff5ad | 1950 | { |
9b409511 YQ |
1951 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len, |
1952 | xfered_len); | |
1e3ff5ad AC |
1953 | } |
1954 | ||
8a55ffb0 | 1955 | static enum target_xfer_status |
1e3ff5ad AC |
1956 | target_write_partial (struct target_ops *ops, |
1957 | enum target_object object, | |
1b0ba102 | 1958 | const char *annex, const gdb_byte *buf, |
9b409511 | 1959 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len) |
1e3ff5ad | 1960 | { |
9b409511 YQ |
1961 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len, |
1962 | xfered_len); | |
1e3ff5ad AC |
1963 | } |
1964 | ||
1965 | /* Wrappers to perform the full transfer. */ | |
7f79c47e DE |
1966 | |
1967 | /* For docs on target_read see target.h. */ | |
1968 | ||
1e3ff5ad AC |
1969 | LONGEST |
1970 | target_read (struct target_ops *ops, | |
1971 | enum target_object object, | |
1b0ba102 | 1972 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1973 | ULONGEST offset, LONGEST len) |
1974 | { | |
279a6fed | 1975 | LONGEST xfered_total = 0; |
d309493c SM |
1976 | int unit_size = 1; |
1977 | ||
1978 | /* If we are reading from a memory object, find the length of an addressable | |
1979 | unit for that architecture. */ | |
1980 | if (object == TARGET_OBJECT_MEMORY | |
1981 | || object == TARGET_OBJECT_STACK_MEMORY | |
1982 | || object == TARGET_OBJECT_CODE_MEMORY | |
1983 | || object == TARGET_OBJECT_RAW_MEMORY) | |
1984 | unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); | |
5d502164 | 1985 | |
279a6fed | 1986 | while (xfered_total < len) |
1e3ff5ad | 1987 | { |
279a6fed | 1988 | ULONGEST xfered_partial; |
9b409511 YQ |
1989 | enum target_xfer_status status; |
1990 | ||
1991 | status = target_read_partial (ops, object, annex, | |
d309493c | 1992 | buf + xfered_total * unit_size, |
279a6fed SM |
1993 | offset + xfered_total, len - xfered_total, |
1994 | &xfered_partial); | |
5d502164 | 1995 | |
1e3ff5ad | 1996 | /* Call an observer, notifying them of the xfer progress? */ |
9b409511 | 1997 | if (status == TARGET_XFER_EOF) |
279a6fed | 1998 | return xfered_total; |
9b409511 YQ |
1999 | else if (status == TARGET_XFER_OK) |
2000 | { | |
279a6fed | 2001 | xfered_total += xfered_partial; |
9b409511 YQ |
2002 | QUIT; |
2003 | } | |
2004 | else | |
279a6fed | 2005 | return TARGET_XFER_E_IO; |
9b409511 | 2006 | |
1e3ff5ad AC |
2007 | } |
2008 | return len; | |
2009 | } | |
2010 | ||
f1a507a1 JB |
2011 | /* Assuming that the entire [begin, end) range of memory cannot be |
2012 | read, try to read whatever subrange is possible to read. | |
2013 | ||
2014 | The function returns, in RESULT, either zero or one memory block. | |
2015 | If there's a readable subrange at the beginning, it is completely | |
2016 | read and returned. Any further readable subrange will not be read. | |
2017 | Otherwise, if there's a readable subrange at the end, it will be | |
2018 | completely read and returned. Any readable subranges before it | |
2019 | (obviously, not starting at the beginning), will be ignored. In | |
2020 | other cases -- either no readable subrange, or readable subrange(s) | |
2021 | that is neither at the beginning, or end, nothing is returned. | |
2022 | ||
2023 | The purpose of this function is to handle a read across a boundary | |
2024 | of accessible memory in a case when memory map is not available. | |
2025 | The above restrictions are fine for this case, but will give | |
2026 | incorrect results if the memory is 'patchy'. However, supporting | |
2027 | 'patchy' memory would require trying to read every single byte, | |
2028 | and it seems unacceptable solution. Explicit memory map is | |
2029 | recommended for this case -- and target_read_memory_robust will | |
2030 | take care of reading multiple ranges then. */ | |
8dedea02 VP |
2031 | |
2032 | static void | |
3e43a32a | 2033 | read_whatever_is_readable (struct target_ops *ops, |
279a6fed | 2034 | const ULONGEST begin, const ULONGEST end, |
d309493c | 2035 | int unit_size, |
386c8614 | 2036 | std::vector<memory_read_result> *result) |
d5086790 | 2037 | { |
8dedea02 VP |
2038 | ULONGEST current_begin = begin; |
2039 | ULONGEST current_end = end; | |
2040 | int forward; | |
9b409511 | 2041 | ULONGEST xfered_len; |
8dedea02 VP |
2042 | |
2043 | /* If we previously failed to read 1 byte, nothing can be done here. */ | |
2044 | if (end - begin <= 1) | |
386c8614 TT |
2045 | return; |
2046 | ||
2047 | gdb::unique_xmalloc_ptr<gdb_byte> buf ((gdb_byte *) xmalloc (end - begin)); | |
8dedea02 VP |
2048 | |
2049 | /* Check that either first or the last byte is readable, and give up | |
c378eb4e | 2050 | if not. This heuristic is meant to permit reading accessible memory |
8dedea02 VP |
2051 | at the boundary of accessible region. */ |
2052 | if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
386c8614 | 2053 | buf.get (), begin, 1, &xfered_len) == TARGET_XFER_OK) |
8dedea02 VP |
2054 | { |
2055 | forward = 1; | |
2056 | ++current_begin; | |
2057 | } | |
2058 | else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
386c8614 | 2059 | buf.get () + (end - begin) - 1, end - 1, 1, |
9b409511 | 2060 | &xfered_len) == TARGET_XFER_OK) |
8dedea02 VP |
2061 | { |
2062 | forward = 0; | |
2063 | --current_end; | |
2064 | } | |
2065 | else | |
386c8614 | 2066 | return; |
8dedea02 VP |
2067 | |
2068 | /* Loop invariant is that the [current_begin, current_end) was previously | |
2069 | found to be not readable as a whole. | |
2070 | ||
2071 | Note loop condition -- if the range has 1 byte, we can't divide the range | |
2072 | so there's no point trying further. */ | |
2073 | while (current_end - current_begin > 1) | |
2074 | { | |
2075 | ULONGEST first_half_begin, first_half_end; | |
2076 | ULONGEST second_half_begin, second_half_end; | |
2077 | LONGEST xfer; | |
279a6fed | 2078 | ULONGEST middle = current_begin + (current_end - current_begin) / 2; |
f1a507a1 | 2079 | |
8dedea02 VP |
2080 | if (forward) |
2081 | { | |
2082 | first_half_begin = current_begin; | |
2083 | first_half_end = middle; | |
2084 | second_half_begin = middle; | |
2085 | second_half_end = current_end; | |
2086 | } | |
2087 | else | |
2088 | { | |
2089 | first_half_begin = middle; | |
2090 | first_half_end = current_end; | |
2091 | second_half_begin = current_begin; | |
2092 | second_half_end = middle; | |
2093 | } | |
2094 | ||
2095 | xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
386c8614 | 2096 | buf.get () + (first_half_begin - begin) * unit_size, |
8dedea02 VP |
2097 | first_half_begin, |
2098 | first_half_end - first_half_begin); | |
2099 | ||
2100 | if (xfer == first_half_end - first_half_begin) | |
2101 | { | |
c378eb4e | 2102 | /* This half reads up fine. So, the error must be in the |
3e43a32a | 2103 | other half. */ |
8dedea02 VP |
2104 | current_begin = second_half_begin; |
2105 | current_end = second_half_end; | |
2106 | } | |
2107 | else | |
2108 | { | |
c378eb4e | 2109 | /* This half is not readable. Because we've tried one byte, we |
279a6fed | 2110 | know some part of this half if actually readable. Go to the next |
8dedea02 VP |
2111 | iteration to divide again and try to read. |
2112 | ||
2113 | We don't handle the other half, because this function only tries | |
2114 | to read a single readable subrange. */ | |
2115 | current_begin = first_half_begin; | |
2116 | current_end = first_half_end; | |
2117 | } | |
2118 | } | |
2119 | ||
2120 | if (forward) | |
2121 | { | |
2122 | /* The [begin, current_begin) range has been read. */ | |
386c8614 | 2123 | result->emplace_back (begin, current_end, std::move (buf)); |
8dedea02 VP |
2124 | } |
2125 | else | |
2126 | { | |
2127 | /* The [current_end, end) range has been read. */ | |
279a6fed | 2128 | LONGEST region_len = end - current_end; |
f1a507a1 | 2129 | |
386c8614 TT |
2130 | gdb::unique_xmalloc_ptr<gdb_byte> data |
2131 | ((gdb_byte *) xmalloc (region_len * unit_size)); | |
2132 | memcpy (data.get (), buf.get () + (current_end - begin) * unit_size, | |
d309493c | 2133 | region_len * unit_size); |
386c8614 | 2134 | result->emplace_back (current_end, end, std::move (data)); |
8dedea02 | 2135 | } |
8dedea02 VP |
2136 | } |
2137 | ||
386c8614 | 2138 | std::vector<memory_read_result> |
279a6fed SM |
2139 | read_memory_robust (struct target_ops *ops, |
2140 | const ULONGEST offset, const LONGEST len) | |
8dedea02 | 2141 | { |
386c8614 | 2142 | std::vector<memory_read_result> result; |
d309493c | 2143 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
8dedea02 | 2144 | |
279a6fed SM |
2145 | LONGEST xfered_total = 0; |
2146 | while (xfered_total < len) | |
d5086790 | 2147 | { |
279a6fed SM |
2148 | struct mem_region *region = lookup_mem_region (offset + xfered_total); |
2149 | LONGEST region_len; | |
5d502164 | 2150 | |
8dedea02 VP |
2151 | /* If there is no explicit region, a fake one should be created. */ |
2152 | gdb_assert (region); | |
2153 | ||
2154 | if (region->hi == 0) | |
279a6fed | 2155 | region_len = len - xfered_total; |
8dedea02 | 2156 | else |
279a6fed | 2157 | region_len = region->hi - offset; |
8dedea02 VP |
2158 | |
2159 | if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO) | |
d5086790 | 2160 | { |
c378eb4e | 2161 | /* Cannot read this region. Note that we can end up here only |
8dedea02 VP |
2162 | if the region is explicitly marked inaccessible, or |
2163 | 'inaccessible-by-default' is in effect. */ | |
279a6fed | 2164 | xfered_total += region_len; |
8dedea02 VP |
2165 | } |
2166 | else | |
2167 | { | |
325fac50 | 2168 | LONGEST to_read = std::min (len - xfered_total, region_len); |
386c8614 TT |
2169 | gdb::unique_xmalloc_ptr<gdb_byte> buffer |
2170 | ((gdb_byte *) xmalloc (to_read * unit_size)); | |
8dedea02 | 2171 | |
279a6fed | 2172 | LONGEST xfered_partial = |
386c8614 | 2173 | target_read (ops, TARGET_OBJECT_MEMORY, NULL, buffer.get (), |
279a6fed | 2174 | offset + xfered_total, to_read); |
8dedea02 | 2175 | /* Call an observer, notifying them of the xfer progress? */ |
279a6fed | 2176 | if (xfered_partial <= 0) |
d5086790 | 2177 | { |
c378eb4e | 2178 | /* Got an error reading full chunk. See if maybe we can read |
8dedea02 | 2179 | some subrange. */ |
e084c964 DB |
2180 | read_whatever_is_readable (ops, offset + xfered_total, |
2181 | offset + xfered_total + to_read, | |
2182 | unit_size, &result); | |
279a6fed | 2183 | xfered_total += to_read; |
d5086790 | 2184 | } |
8dedea02 VP |
2185 | else |
2186 | { | |
386c8614 TT |
2187 | result.emplace_back (offset + xfered_total, |
2188 | offset + xfered_total + xfered_partial, | |
2189 | std::move (buffer)); | |
279a6fed | 2190 | xfered_total += xfered_partial; |
8dedea02 VP |
2191 | } |
2192 | QUIT; | |
d5086790 | 2193 | } |
d5086790 | 2194 | } |
9d78f827 | 2195 | |
8dedea02 | 2196 | return result; |
d5086790 VP |
2197 | } |
2198 | ||
8dedea02 | 2199 | |
cf7a04e8 DJ |
2200 | /* An alternative to target_write with progress callbacks. */ |
2201 | ||
1e3ff5ad | 2202 | LONGEST |
cf7a04e8 DJ |
2203 | target_write_with_progress (struct target_ops *ops, |
2204 | enum target_object object, | |
2205 | const char *annex, const gdb_byte *buf, | |
2206 | ULONGEST offset, LONGEST len, | |
2207 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad | 2208 | { |
279a6fed | 2209 | LONGEST xfered_total = 0; |
d309493c SM |
2210 | int unit_size = 1; |
2211 | ||
2212 | /* If we are writing to a memory object, find the length of an addressable | |
2213 | unit for that architecture. */ | |
2214 | if (object == TARGET_OBJECT_MEMORY | |
2215 | || object == TARGET_OBJECT_STACK_MEMORY | |
2216 | || object == TARGET_OBJECT_CODE_MEMORY | |
2217 | || object == TARGET_OBJECT_RAW_MEMORY) | |
2218 | unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); | |
a76d924d DJ |
2219 | |
2220 | /* Give the progress callback a chance to set up. */ | |
2221 | if (progress) | |
2222 | (*progress) (0, baton); | |
2223 | ||
279a6fed | 2224 | while (xfered_total < len) |
1e3ff5ad | 2225 | { |
279a6fed | 2226 | ULONGEST xfered_partial; |
9b409511 YQ |
2227 | enum target_xfer_status status; |
2228 | ||
2229 | status = target_write_partial (ops, object, annex, | |
d309493c | 2230 | buf + xfered_total * unit_size, |
279a6fed SM |
2231 | offset + xfered_total, len - xfered_total, |
2232 | &xfered_partial); | |
cf7a04e8 | 2233 | |
5c328c05 | 2234 | if (status != TARGET_XFER_OK) |
279a6fed | 2235 | return status == TARGET_XFER_EOF ? xfered_total : TARGET_XFER_E_IO; |
cf7a04e8 DJ |
2236 | |
2237 | if (progress) | |
279a6fed | 2238 | (*progress) (xfered_partial, baton); |
cf7a04e8 | 2239 | |
279a6fed | 2240 | xfered_total += xfered_partial; |
1e3ff5ad AC |
2241 | QUIT; |
2242 | } | |
2243 | return len; | |
2244 | } | |
2245 | ||
7f79c47e DE |
2246 | /* For docs on target_write see target.h. */ |
2247 | ||
cf7a04e8 DJ |
2248 | LONGEST |
2249 | target_write (struct target_ops *ops, | |
2250 | enum target_object object, | |
2251 | const char *annex, const gdb_byte *buf, | |
2252 | ULONGEST offset, LONGEST len) | |
2253 | { | |
2254 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
2255 | NULL, NULL); | |
2256 | } | |
2257 | ||
9018be22 SM |
2258 | /* Help for target_read_alloc and target_read_stralloc. See their comments |
2259 | for details. */ | |
13547ab6 | 2260 | |
9018be22 SM |
2261 | template <typename T> |
2262 | gdb::optional<gdb::def_vector<T>> | |
159f81f3 | 2263 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, |
9018be22 | 2264 | const char *annex) |
13547ab6 | 2265 | { |
9018be22 SM |
2266 | gdb::def_vector<T> buf; |
2267 | size_t buf_pos = 0; | |
2268 | const int chunk = 4096; | |
13547ab6 DJ |
2269 | |
2270 | /* This function does not have a length parameter; it reads the | |
2271 | entire OBJECT). Also, it doesn't support objects fetched partly | |
2272 | from one target and partly from another (in a different stratum, | |
2273 | e.g. a core file and an executable). Both reasons make it | |
2274 | unsuitable for reading memory. */ | |
2275 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
2276 | ||
2277 | /* Start by reading up to 4K at a time. The target will throttle | |
2278 | this number down if necessary. */ | |
13547ab6 DJ |
2279 | while (1) |
2280 | { | |
9b409511 YQ |
2281 | ULONGEST xfered_len; |
2282 | enum target_xfer_status status; | |
2283 | ||
9018be22 SM |
2284 | buf.resize (buf_pos + chunk); |
2285 | ||
2286 | status = target_read_partial (ops, object, annex, | |
2287 | (gdb_byte *) &buf[buf_pos], | |
2288 | buf_pos, chunk, | |
9b409511 YQ |
2289 | &xfered_len); |
2290 | ||
2291 | if (status == TARGET_XFER_EOF) | |
13547ab6 DJ |
2292 | { |
2293 | /* Read all there was. */ | |
9018be22 SM |
2294 | buf.resize (buf_pos); |
2295 | return buf; | |
13547ab6 | 2296 | } |
9b409511 YQ |
2297 | else if (status != TARGET_XFER_OK) |
2298 | { | |
2299 | /* An error occurred. */ | |
9018be22 | 2300 | return {}; |
9b409511 | 2301 | } |
13547ab6 | 2302 | |
9b409511 | 2303 | buf_pos += xfered_len; |
13547ab6 | 2304 | |
13547ab6 DJ |
2305 | QUIT; |
2306 | } | |
2307 | } | |
2308 | ||
9018be22 | 2309 | /* See target.h */ |
159f81f3 | 2310 | |
9018be22 | 2311 | gdb::optional<gdb::byte_vector> |
159f81f3 | 2312 | target_read_alloc (struct target_ops *ops, enum target_object object, |
9018be22 | 2313 | const char *annex) |
159f81f3 | 2314 | { |
9018be22 | 2315 | return target_read_alloc_1<gdb_byte> (ops, object, annex); |
159f81f3 DJ |
2316 | } |
2317 | ||
b7b030ad | 2318 | /* See target.h. */ |
159f81f3 | 2319 | |
9018be22 | 2320 | gdb::optional<gdb::char_vector> |
159f81f3 DJ |
2321 | target_read_stralloc (struct target_ops *ops, enum target_object object, |
2322 | const char *annex) | |
2323 | { | |
9018be22 SM |
2324 | gdb::optional<gdb::char_vector> buf |
2325 | = target_read_alloc_1<char> (ops, object, annex); | |
159f81f3 | 2326 | |
9018be22 SM |
2327 | if (!buf) |
2328 | return {}; | |
159f81f3 | 2329 | |
d00a27c5 | 2330 | if (buf->empty () || buf->back () != '\0') |
9018be22 | 2331 | buf->push_back ('\0'); |
7313baad UW |
2332 | |
2333 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
9018be22 SM |
2334 | for (auto it = std::find (buf->begin (), buf->end (), '\0'); |
2335 | it != buf->end (); it++) | |
2336 | if (*it != '\0') | |
7313baad UW |
2337 | { |
2338 | warning (_("target object %d, annex %s, " | |
2339 | "contained unexpected null characters"), | |
2340 | (int) object, annex ? annex : "(none)"); | |
2341 | break; | |
2342 | } | |
159f81f3 | 2343 | |
9018be22 | 2344 | return buf; |
159f81f3 DJ |
2345 | } |
2346 | ||
b6591e8b AC |
2347 | /* Memory transfer methods. */ |
2348 | ||
2349 | void | |
1b0ba102 | 2350 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
2351 | LONGEST len) |
2352 | { | |
07b82ea5 PA |
2353 | /* This method is used to read from an alternate, non-current |
2354 | target. This read must bypass the overlay support (as symbols | |
2355 | don't match this target), and GDB's internal cache (wrong cache | |
2356 | for this target). */ | |
2357 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) | |
b6591e8b | 2358 | != len) |
578d3588 | 2359 | memory_error (TARGET_XFER_E_IO, addr); |
b6591e8b AC |
2360 | } |
2361 | ||
2362 | ULONGEST | |
5d502164 MS |
2363 | get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr, |
2364 | int len, enum bfd_endian byte_order) | |
b6591e8b | 2365 | { |
f6519ebc | 2366 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
2367 | |
2368 | gdb_assert (len <= sizeof (buf)); | |
2369 | get_target_memory (ops, addr, buf, len); | |
e17a4113 | 2370 | return extract_unsigned_integer (buf, len, byte_order); |
b6591e8b AC |
2371 | } |
2372 | ||
3db08215 MM |
2373 | /* See target.h. */ |
2374 | ||
d914c394 SS |
2375 | int |
2376 | target_insert_breakpoint (struct gdbarch *gdbarch, | |
2377 | struct bp_target_info *bp_tgt) | |
2378 | { | |
2379 | if (!may_insert_breakpoints) | |
2380 | { | |
2381 | warning (_("May not insert breakpoints")); | |
2382 | return 1; | |
2383 | } | |
2384 | ||
328d42d8 SM |
2385 | target_ops *target = current_inferior ()->top_target (); |
2386 | ||
2387 | return target->insert_breakpoint (gdbarch, bp_tgt); | |
d914c394 SS |
2388 | } |
2389 | ||
3db08215 MM |
2390 | /* See target.h. */ |
2391 | ||
d914c394 | 2392 | int |
6b84065d | 2393 | target_remove_breakpoint (struct gdbarch *gdbarch, |
73971819 PA |
2394 | struct bp_target_info *bp_tgt, |
2395 | enum remove_bp_reason reason) | |
d914c394 SS |
2396 | { |
2397 | /* This is kind of a weird case to handle, but the permission might | |
2398 | have been changed after breakpoints were inserted - in which case | |
2399 | we should just take the user literally and assume that any | |
2400 | breakpoints should be left in place. */ | |
2401 | if (!may_insert_breakpoints) | |
2402 | { | |
2403 | warning (_("May not remove breakpoints")); | |
2404 | return 1; | |
2405 | } | |
2406 | ||
328d42d8 SM |
2407 | target_ops *target = current_inferior ()->top_target (); |
2408 | ||
2409 | return target->remove_breakpoint (gdbarch, bp_tgt, reason); | |
d914c394 SS |
2410 | } |
2411 | ||
c906108c | 2412 | static void |
1d12d88f | 2413 | info_target_command (const char *args, int from_tty) |
c906108c | 2414 | { |
c906108c | 2415 | int has_all_mem = 0; |
c5aa993b | 2416 | |
a42d7dd8 TT |
2417 | if (current_program_space->symfile_object_file != NULL) |
2418 | { | |
2419 | objfile *objf = current_program_space->symfile_object_file; | |
6cb06a8c TT |
2420 | gdb_printf (_("Symbols from \"%s\".\n"), |
2421 | objfile_name (objf)); | |
a42d7dd8 | 2422 | } |
c906108c | 2423 | |
328d42d8 SM |
2424 | for (target_ops *t = current_inferior ()->top_target (); |
2425 | t != NULL; | |
2426 | t = t->beneath ()) | |
c906108c | 2427 | { |
f6ac5f3d | 2428 | if (!t->has_memory ()) |
c906108c SS |
2429 | continue; |
2430 | ||
66b4deae | 2431 | if ((int) (t->stratum ()) <= (int) dummy_stratum) |
c906108c SS |
2432 | continue; |
2433 | if (has_all_mem) | |
6cb06a8c TT |
2434 | gdb_printf (_("\tWhile running this, " |
2435 | "GDB does not access memory from...\n")); | |
2436 | gdb_printf ("%s:\n", t->longname ()); | |
f6ac5f3d PA |
2437 | t->files_info (); |
2438 | has_all_mem = t->has_all_memory (); | |
c906108c SS |
2439 | } |
2440 | } | |
2441 | ||
fd79ecee DJ |
2442 | /* This function is called before any new inferior is created, e.g. |
2443 | by running a program, attaching, or connecting to a target. | |
2444 | It cleans up any state from previous invocations which might | |
2445 | change between runs. This is a subset of what target_preopen | |
2446 | resets (things which might change between targets). */ | |
2447 | ||
2448 | void | |
2449 | target_pre_inferior (int from_tty) | |
2450 | { | |
c378eb4e | 2451 | /* Clear out solib state. Otherwise the solib state of the previous |
b9db4ced | 2452 | inferior might have survived and is entirely wrong for the new |
c378eb4e | 2453 | target. This has been observed on GNU/Linux using glibc 2.3. How |
b9db4ced UW |
2454 | to reproduce: |
2455 | ||
2456 | bash$ ./foo& | |
2457 | [1] 4711 | |
2458 | bash$ ./foo& | |
2459 | [1] 4712 | |
2460 | bash$ gdb ./foo | |
2461 | [...] | |
2462 | (gdb) attach 4711 | |
2463 | (gdb) detach | |
2464 | (gdb) attach 4712 | |
2465 | Cannot access memory at address 0xdeadbeef | |
2466 | */ | |
b9db4ced | 2467 | |
50c71eaf PA |
2468 | /* In some OSs, the shared library list is the same/global/shared |
2469 | across inferiors. If code is shared between processes, so are | |
2470 | memory regions and features. */ | |
f5656ead | 2471 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
50c71eaf PA |
2472 | { |
2473 | no_shared_libraries (NULL, from_tty); | |
2474 | ||
2475 | invalidate_target_mem_regions (); | |
424163ea | 2476 | |
50c71eaf PA |
2477 | target_clear_description (); |
2478 | } | |
8ffcbaaf | 2479 | |
e9756d52 PP |
2480 | /* attach_flag may be set if the previous process associated with |
2481 | the inferior was attached to. */ | |
30220b46 | 2482 | current_inferior ()->attach_flag = false; |
e9756d52 | 2483 | |
5d5658a1 PA |
2484 | current_inferior ()->highest_thread_num = 0; |
2485 | ||
a81871f7 PA |
2486 | update_previous_thread (); |
2487 | ||
8ffcbaaf | 2488 | agent_capability_invalidate (); |
fd79ecee DJ |
2489 | } |
2490 | ||
c906108c SS |
2491 | /* This is to be called by the open routine before it does |
2492 | anything. */ | |
2493 | ||
2494 | void | |
fba45db2 | 2495 | target_preopen (int from_tty) |
c906108c | 2496 | { |
c5aa993b | 2497 | dont_repeat (); |
c906108c | 2498 | |
5b6d1e4f | 2499 | if (current_inferior ()->pid != 0) |
c5aa993b | 2500 | { |
adf40b2e | 2501 | if (!from_tty |
55f6301a | 2502 | || !target_has_execution () |
b8fa0bfa | 2503 | || query (_("A program is being debugged already. Kill it? "))) |
5b6d1e4f PA |
2504 | { |
2505 | /* Core inferiors actually should be detached, not | |
2506 | killed. */ | |
55f6301a | 2507 | if (target_has_execution ()) |
5b6d1e4f PA |
2508 | target_kill (); |
2509 | else | |
2510 | target_detach (current_inferior (), 0); | |
2511 | } | |
c906108c | 2512 | else |
8a3fe4f8 | 2513 | error (_("Program not killed.")); |
c906108c SS |
2514 | } |
2515 | ||
a81871f7 PA |
2516 | /* Release reference to old previous thread. */ |
2517 | update_previous_thread (); | |
2518 | ||
c906108c SS |
2519 | /* Calling target_kill may remove the target from the stack. But if |
2520 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
2521 | /* Leave the exec target, though. The user may be switching from a |
2522 | live process to a core of the same program. */ | |
c8181f70 | 2523 | current_inferior ()->pop_all_targets_above (file_stratum); |
fd79ecee DJ |
2524 | |
2525 | target_pre_inferior (from_tty); | |
c906108c SS |
2526 | } |
2527 | ||
6bd6f3b6 | 2528 | /* See target.h. */ |
c906108c SS |
2529 | |
2530 | void | |
6e1e1966 | 2531 | target_detach (inferior *inf, int from_tty) |
c906108c | 2532 | { |
ddff2a2d AB |
2533 | /* Thread's don't need to be resumed until the end of this function. */ |
2534 | scoped_disable_commit_resumed disable_commit_resumed ("detaching"); | |
2535 | ||
5783e150 PW |
2536 | /* After we have detached, we will clear the register cache for this inferior |
2537 | by calling registers_changed_ptid. We must save the pid_ptid before | |
2538 | detaching, as the target detach method will clear inf->pid. */ | |
2539 | ptid_t save_pid_ptid = ptid_t (inf->pid); | |
2540 | ||
6e1e1966 SM |
2541 | /* As long as some to_detach implementations rely on the current_inferior |
2542 | (either directly, or indirectly, like through target_gdbarch or by | |
2543 | reading memory), INF needs to be the current inferior. When that | |
2544 | requirement will become no longer true, then we can remove this | |
2545 | assertion. */ | |
2546 | gdb_assert (inf == current_inferior ()); | |
2547 | ||
24291992 PA |
2548 | prepare_for_detach (); |
2549 | ||
9056c917 SM |
2550 | gdb::observers::inferior_pre_detach.notify (inf); |
2551 | ||
5b6d1e4f PA |
2552 | /* Hold a strong reference because detaching may unpush the |
2553 | target. */ | |
2554 | auto proc_target_ref = target_ops_ref::new_reference (inf->process_target ()); | |
2555 | ||
328d42d8 | 2556 | current_inferior ()->top_target ()->detach (inf, from_tty); |
799efbe8 | 2557 | |
5b6d1e4f PA |
2558 | process_stratum_target *proc_target |
2559 | = as_process_stratum_target (proc_target_ref.get ()); | |
2560 | ||
2561 | registers_changed_ptid (proc_target, save_pid_ptid); | |
799efbe8 PW |
2562 | |
2563 | /* We have to ensure we have no frame cache left. Normally, | |
5783e150 PW |
2564 | registers_changed_ptid (save_pid_ptid) calls reinit_frame_cache when |
2565 | inferior_ptid matches save_pid_ptid, but in our case, it does not | |
799efbe8 PW |
2566 | call it, as inferior_ptid has been reset. */ |
2567 | reinit_frame_cache (); | |
ddff2a2d AB |
2568 | |
2569 | disable_commit_resumed.reset_and_commit (); | |
c906108c SS |
2570 | } |
2571 | ||
6ad8ae5c | 2572 | void |
fee354ee | 2573 | target_disconnect (const char *args, int from_tty) |
6ad8ae5c | 2574 | { |
50c71eaf PA |
2575 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
2576 | are global across processes, we have to remove them before | |
2577 | disconnecting. */ | |
74960c60 VP |
2578 | remove_breakpoints (); |
2579 | ||
328d42d8 | 2580 | current_inferior ()->top_target ()->disconnect (args, from_tty); |
6ad8ae5c DJ |
2581 | } |
2582 | ||
f2b9e3df SDJ |
2583 | /* See target/target.h. */ |
2584 | ||
117de6a9 | 2585 | ptid_t |
b60cea74 TT |
2586 | target_wait (ptid_t ptid, struct target_waitstatus *status, |
2587 | target_wait_flags options) | |
117de6a9 | 2588 | { |
328d42d8 | 2589 | target_ops *target = current_inferior ()->top_target (); |
1192f124 SM |
2590 | process_stratum_target *proc_target = current_inferior ()->process_target (); |
2591 | ||
2592 | gdb_assert (!proc_target->commit_resumed_state); | |
d3a07122 | 2593 | |
0c1e6e26 | 2594 | if (!target_can_async_p (target)) |
d3a07122 SM |
2595 | gdb_assert ((options & TARGET_WNOHANG) == 0); |
2596 | ||
fb85cece PM |
2597 | try |
2598 | { | |
2599 | gdb::observers::target_pre_wait.notify (ptid); | |
2600 | ptid_t event_ptid = target->wait (ptid, status, options); | |
2601 | gdb::observers::target_post_wait.notify (event_ptid); | |
2602 | return event_ptid; | |
2603 | } | |
2604 | catch (...) | |
2605 | { | |
2606 | gdb::observers::target_post_wait.notify (null_ptid); | |
2607 | throw; | |
2608 | } | |
117de6a9 PA |
2609 | } |
2610 | ||
0b333c5e PA |
2611 | /* See target.h. */ |
2612 | ||
2613 | ptid_t | |
2614 | default_target_wait (struct target_ops *ops, | |
2615 | ptid_t ptid, struct target_waitstatus *status, | |
b60cea74 | 2616 | target_wait_flags options) |
0b333c5e | 2617 | { |
183be222 | 2618 | status->set_ignore (); |
0b333c5e PA |
2619 | return minus_one_ptid; |
2620 | } | |
2621 | ||
a068643d | 2622 | std::string |
117de6a9 PA |
2623 | target_pid_to_str (ptid_t ptid) |
2624 | { | |
328d42d8 | 2625 | return current_inferior ()->top_target ()->pid_to_str (ptid); |
117de6a9 PA |
2626 | } |
2627 | ||
73ede765 | 2628 | const char * |
4694da01 TT |
2629 | target_thread_name (struct thread_info *info) |
2630 | { | |
5b6d1e4f PA |
2631 | gdb_assert (info->inf == current_inferior ()); |
2632 | ||
328d42d8 | 2633 | return current_inferior ()->top_target ()->thread_name (info); |
4694da01 TT |
2634 | } |
2635 | ||
e04ee09e KB |
2636 | struct thread_info * |
2637 | target_thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
2638 | int handle_len, | |
2639 | struct inferior *inf) | |
2640 | { | |
328d42d8 SM |
2641 | target_ops *target = current_inferior ()->top_target (); |
2642 | ||
2643 | return target->thread_handle_to_thread_info (thread_handle, handle_len, inf); | |
e04ee09e KB |
2644 | } |
2645 | ||
3d6c6204 KB |
2646 | /* See target.h. */ |
2647 | ||
1f08d324 | 2648 | gdb::array_view<const gdb_byte> |
3d6c6204 KB |
2649 | target_thread_info_to_thread_handle (struct thread_info *tip) |
2650 | { | |
328d42d8 SM |
2651 | target_ops *target = current_inferior ()->top_target (); |
2652 | ||
2653 | return target->thread_info_to_thread_handle (tip); | |
3d6c6204 KB |
2654 | } |
2655 | ||
e1ac3328 | 2656 | void |
d51926f0 | 2657 | target_resume (ptid_t scope_ptid, int step, enum gdb_signal signal) |
e1ac3328 | 2658 | { |
5b6d1e4f | 2659 | process_stratum_target *curr_target = current_inferior ()->process_target (); |
1192f124 | 2660 | gdb_assert (!curr_target->commit_resumed_state); |
5b6d1e4f | 2661 | |
d51926f0 PA |
2662 | gdb_assert (inferior_ptid != null_ptid); |
2663 | gdb_assert (inferior_ptid.matches (scope_ptid)); | |
2664 | ||
4e5d721f | 2665 | target_dcache_invalidate (); |
28439f5e | 2666 | |
d51926f0 | 2667 | current_inferior ()->top_target ()->resume (scope_ptid, step, signal); |
28439f5e | 2668 | |
d51926f0 | 2669 | registers_changed_ptid (curr_target, scope_ptid); |
251bde03 | 2670 | /* We only set the internal executing state here. The user/frontend |
f2ffa92b PA |
2671 | running state is set at a higher level. This also clears the |
2672 | thread's stop_pc as side effect. */ | |
d51926f0 PA |
2673 | set_executing (curr_target, scope_ptid, true); |
2674 | clear_inline_frame_state (curr_target, scope_ptid); | |
38ba82db JB |
2675 | |
2676 | if (target_can_async_p ()) | |
4a570176 | 2677 | target_async (true); |
e1ac3328 | 2678 | } |
2455069d | 2679 | |
85ad3aaf PA |
2680 | /* See target.h. */ |
2681 | ||
2682 | void | |
1192f124 | 2683 | target_commit_resumed () |
85ad3aaf | 2684 | { |
1192f124 SM |
2685 | gdb_assert (current_inferior ()->process_target ()->commit_resumed_state); |
2686 | current_inferior ()->top_target ()->commit_resumed (); | |
85ad3aaf PA |
2687 | } |
2688 | ||
b4b1a226 SM |
2689 | /* See target.h. */ |
2690 | ||
2691 | bool | |
2692 | target_has_pending_events () | |
2693 | { | |
2694 | return current_inferior ()->top_target ()->has_pending_events (); | |
2695 | } | |
2696 | ||
2455069d | 2697 | void |
adc6a863 | 2698 | target_pass_signals (gdb::array_view<const unsigned char> pass_signals) |
2455069d | 2699 | { |
328d42d8 | 2700 | current_inferior ()->top_target ()->pass_signals (pass_signals); |
2455069d UW |
2701 | } |
2702 | ||
9b224c5e | 2703 | void |
adc6a863 | 2704 | target_program_signals (gdb::array_view<const unsigned char> program_signals) |
9b224c5e | 2705 | { |
328d42d8 | 2706 | current_inferior ()->top_target ()->program_signals (program_signals); |
9b224c5e PA |
2707 | } |
2708 | ||
e97007b6 | 2709 | static void |
82d1f134 SM |
2710 | default_follow_fork (struct target_ops *self, inferior *child_inf, |
2711 | ptid_t child_ptid, target_waitkind fork_kind, | |
2712 | bool follow_child, bool detach_fork) | |
098dba18 TT |
2713 | { |
2714 | /* Some target returned a fork event, but did not know how to follow it. */ | |
f34652de | 2715 | internal_error (_("could not find a target to follow fork")); |
098dba18 TT |
2716 | } |
2717 | ||
e97007b6 | 2718 | /* See target.h. */ |
ee057212 | 2719 | |
e97007b6 | 2720 | void |
82d1f134 SM |
2721 | target_follow_fork (inferior *child_inf, ptid_t child_ptid, |
2722 | target_waitkind fork_kind, bool follow_child, | |
2723 | bool detach_fork) | |
ee057212 | 2724 | { |
328d42d8 SM |
2725 | target_ops *target = current_inferior ()->top_target (); |
2726 | ||
82d1f134 SM |
2727 | /* Check consistency between CHILD_INF, CHILD_PTID, FOLLOW_CHILD and |
2728 | DETACH_FORK. */ | |
2729 | if (child_inf != nullptr) | |
2730 | { | |
2731 | gdb_assert (follow_child || !detach_fork); | |
2732 | gdb_assert (child_inf->pid == child_ptid.pid ()); | |
2733 | } | |
2734 | else | |
2735 | gdb_assert (!follow_child && detach_fork); | |
2736 | ||
2737 | return target->follow_fork (child_inf, child_ptid, fork_kind, follow_child, | |
2738 | detach_fork); | |
ee057212 DJ |
2739 | } |
2740 | ||
294c36eb | 2741 | /* See target.h. */ |
94585166 DB |
2742 | |
2743 | void | |
294c36eb SM |
2744 | target_follow_exec (inferior *follow_inf, ptid_t ptid, |
2745 | const char *execd_pathname) | |
94585166 | 2746 | { |
294c36eb SM |
2747 | current_inferior ()->top_target ()->follow_exec (follow_inf, ptid, |
2748 | execd_pathname); | |
94585166 DB |
2749 | } |
2750 | ||
8d657035 TT |
2751 | static void |
2752 | default_mourn_inferior (struct target_ops *self) | |
2753 | { | |
f34652de | 2754 | internal_error (_("could not find a target to follow mourn inferior")); |
8d657035 TT |
2755 | } |
2756 | ||
136d6dae | 2757 | void |
bc1e6c81 | 2758 | target_mourn_inferior (ptid_t ptid) |
136d6dae | 2759 | { |
dffdd8b5 | 2760 | gdb_assert (ptid.pid () == inferior_ptid.pid ()); |
328d42d8 | 2761 | current_inferior ()->top_target ()->mourn_inferior (); |
136d6dae | 2762 | |
8d657035 TT |
2763 | /* We no longer need to keep handles on any of the object files. |
2764 | Make sure to release them to avoid unnecessarily locking any | |
2765 | of them while we're not actually debugging. */ | |
2766 | bfd_cache_close_all (); | |
136d6dae VP |
2767 | } |
2768 | ||
424163ea DJ |
2769 | /* Look for a target which can describe architectural features, starting |
2770 | from TARGET. If we find one, return its description. */ | |
2771 | ||
2772 | const struct target_desc * | |
2773 | target_read_description (struct target_ops *target) | |
2774 | { | |
f6ac5f3d | 2775 | return target->read_description (); |
424163ea DJ |
2776 | } |
2777 | ||
08388c79 | 2778 | |
58a5184e TT |
2779 | /* Default implementation of memory-searching. */ |
2780 | ||
2781 | static int | |
2782 | default_search_memory (struct target_ops *self, | |
2783 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2784 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2785 | CORE_ADDR *found_addrp) | |
2786 | { | |
4a72de73 TT |
2787 | auto read_memory = [=] (CORE_ADDR addr, gdb_byte *result, size_t len) |
2788 | { | |
328d42d8 SM |
2789 | return target_read (current_inferior ()->top_target (), |
2790 | TARGET_OBJECT_MEMORY, NULL, | |
4a72de73 TT |
2791 | result, addr, len) == len; |
2792 | }; | |
2793 | ||
58a5184e | 2794 | /* Start over from the top of the target stack. */ |
4a72de73 | 2795 | return simple_search_memory (read_memory, start_addr, search_space_len, |
58a5184e TT |
2796 | pattern, pattern_len, found_addrp); |
2797 | } | |
2798 | ||
08388c79 DE |
2799 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the |
2800 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2801 | ||
2802 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2803 | requiring halting of the search (e.g. memory read error). | |
2804 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2805 | ||
2806 | int | |
2807 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2808 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2809 | CORE_ADDR *found_addrp) | |
2810 | { | |
328d42d8 SM |
2811 | target_ops *target = current_inferior ()->top_target (); |
2812 | ||
2813 | return target->search_memory (start_addr, search_space_len, pattern, | |
2814 | pattern_len, found_addrp); | |
08388c79 DE |
2815 | } |
2816 | ||
8edfe269 DJ |
2817 | /* Look through the currently pushed targets. If none of them will |
2818 | be able to restart the currently running process, issue an error | |
2819 | message. */ | |
2820 | ||
2821 | void | |
2822 | target_require_runnable (void) | |
2823 | { | |
328d42d8 SM |
2824 | for (target_ops *t = current_inferior ()->top_target (); |
2825 | t != NULL; | |
2826 | t = t->beneath ()) | |
8edfe269 DJ |
2827 | { |
2828 | /* If this target knows how to create a new program, then | |
2829 | assume we will still be able to after killing the current | |
2830 | one. Either killing and mourning will not pop T, or else | |
2831 | find_default_run_target will find it again. */ | |
f6ac5f3d | 2832 | if (t->can_create_inferior ()) |
8edfe269 DJ |
2833 | return; |
2834 | ||
548740d6 | 2835 | /* Do not worry about targets at certain strata that can not |
8edfe269 DJ |
2836 | create inferiors. Assume they will be pushed again if |
2837 | necessary, and continue to the process_stratum. */ | |
66b4deae | 2838 | if (t->stratum () > process_stratum) |
8edfe269 DJ |
2839 | continue; |
2840 | ||
3e43a32a MS |
2841 | error (_("The \"%s\" target does not support \"run\". " |
2842 | "Try \"help target\" or \"continue\"."), | |
f6ac5f3d | 2843 | t->shortname ()); |
8edfe269 DJ |
2844 | } |
2845 | ||
2846 | /* This function is only called if the target is running. In that | |
2847 | case there should have been a process_stratum target and it | |
c378eb4e | 2848 | should either know how to create inferiors, or not... */ |
f34652de | 2849 | internal_error (_("No targets found")); |
8edfe269 DJ |
2850 | } |
2851 | ||
6a3cb8e8 PA |
2852 | /* Whether GDB is allowed to fall back to the default run target for |
2853 | "run", "attach", etc. when no target is connected yet. */ | |
491144b5 | 2854 | static bool auto_connect_native_target = true; |
6a3cb8e8 PA |
2855 | |
2856 | static void | |
2857 | show_auto_connect_native_target (struct ui_file *file, int from_tty, | |
2858 | struct cmd_list_element *c, const char *value) | |
2859 | { | |
6cb06a8c TT |
2860 | gdb_printf (file, |
2861 | _("Whether GDB may automatically connect to the " | |
2862 | "native target is %s.\n"), | |
2863 | value); | |
6a3cb8e8 PA |
2864 | } |
2865 | ||
d9f719f1 PA |
2866 | /* A pointer to the target that can respond to "run" or "attach". |
2867 | Native targets are always singletons and instantiated early at GDB | |
2868 | startup. */ | |
2869 | static target_ops *the_native_target; | |
2870 | ||
2871 | /* See target.h. */ | |
2872 | ||
2873 | void | |
2874 | set_native_target (target_ops *target) | |
2875 | { | |
2876 | if (the_native_target != NULL) | |
f34652de | 2877 | internal_error (_("native target already set (\"%s\")."), |
d9f719f1 PA |
2878 | the_native_target->longname ()); |
2879 | ||
2880 | the_native_target = target; | |
2881 | } | |
2882 | ||
2883 | /* See target.h. */ | |
2884 | ||
2885 | target_ops * | |
2886 | get_native_target () | |
2887 | { | |
2888 | return the_native_target; | |
2889 | } | |
2890 | ||
c906108c SS |
2891 | /* Look through the list of possible targets for a target that can |
2892 | execute a run or attach command without any other data. This is | |
2893 | used to locate the default process stratum. | |
2894 | ||
5f667f2d PA |
2895 | If DO_MESG is not NULL, the result is always valid (error() is |
2896 | called for errors); else, return NULL on error. */ | |
c906108c SS |
2897 | |
2898 | static struct target_ops * | |
a121b7c1 | 2899 | find_default_run_target (const char *do_mesg) |
c906108c | 2900 | { |
d9f719f1 PA |
2901 | if (auto_connect_native_target && the_native_target != NULL) |
2902 | return the_native_target; | |
c906108c | 2903 | |
d9f719f1 PA |
2904 | if (do_mesg != NULL) |
2905 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
2906 | return NULL; | |
c906108c SS |
2907 | } |
2908 | ||
b3ccfe11 | 2909 | /* See target.h. */ |
c906108c | 2910 | |
b3ccfe11 TT |
2911 | struct target_ops * |
2912 | find_attach_target (void) | |
c906108c | 2913 | { |
b3ccfe11 | 2914 | /* If a target on the current stack can attach, use it. */ |
328d42d8 SM |
2915 | for (target_ops *t = current_inferior ()->top_target (); |
2916 | t != NULL; | |
2917 | t = t->beneath ()) | |
b3ccfe11 | 2918 | { |
f6ac5f3d | 2919 | if (t->can_attach ()) |
d9f719f1 | 2920 | return t; |
b3ccfe11 | 2921 | } |
c906108c | 2922 | |
b3ccfe11 | 2923 | /* Otherwise, use the default run target for attaching. */ |
d9f719f1 | 2924 | return find_default_run_target ("attach"); |
b84876c2 PA |
2925 | } |
2926 | ||
b3ccfe11 | 2927 | /* See target.h. */ |
b84876c2 | 2928 | |
b3ccfe11 TT |
2929 | struct target_ops * |
2930 | find_run_target (void) | |
9908b566 | 2931 | { |
f6ac5f3d | 2932 | /* If a target on the current stack can run, use it. */ |
328d42d8 SM |
2933 | for (target_ops *t = current_inferior ()->top_target (); |
2934 | t != NULL; | |
2935 | t = t->beneath ()) | |
b3ccfe11 | 2936 | { |
f6ac5f3d | 2937 | if (t->can_create_inferior ()) |
d9f719f1 | 2938 | return t; |
b3ccfe11 | 2939 | } |
5d502164 | 2940 | |
b3ccfe11 | 2941 | /* Otherwise, use the default run target. */ |
d9f719f1 | 2942 | return find_default_run_target ("run"); |
9908b566 VP |
2943 | } |
2944 | ||
f6ac5f3d PA |
2945 | bool |
2946 | target_ops::info_proc (const char *args, enum info_proc_what what) | |
2947 | { | |
2948 | return false; | |
2949 | } | |
2950 | ||
145b16a9 UW |
2951 | /* Implement the "info proc" command. */ |
2952 | ||
451b7c33 | 2953 | int |
7bc112c1 | 2954 | target_info_proc (const char *args, enum info_proc_what what) |
145b16a9 UW |
2955 | { |
2956 | struct target_ops *t; | |
2957 | ||
2958 | /* If we're already connected to something that can get us OS | |
2959 | related data, use it. Otherwise, try using the native | |
2960 | target. */ | |
f6ac5f3d PA |
2961 | t = find_target_at (process_stratum); |
2962 | if (t == NULL) | |
145b16a9 UW |
2963 | t = find_default_run_target (NULL); |
2964 | ||
b6a8c27b | 2965 | for (; t != NULL; t = t->beneath ()) |
145b16a9 | 2966 | { |
f6ac5f3d | 2967 | if (t->info_proc (args, what)) |
145b16a9 | 2968 | { |
145b16a9 | 2969 | if (targetdebug) |
6cb06a8c TT |
2970 | gdb_printf (gdb_stdlog, |
2971 | "target_info_proc (\"%s\", %d)\n", args, what); | |
145b16a9 | 2972 | |
451b7c33 | 2973 | return 1; |
145b16a9 UW |
2974 | } |
2975 | } | |
2976 | ||
451b7c33 | 2977 | return 0; |
145b16a9 UW |
2978 | } |
2979 | ||
03583c20 | 2980 | static int |
2bfc0540 | 2981 | find_default_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
2982 | { |
2983 | struct target_ops *t; | |
2984 | ||
2985 | t = find_default_run_target (NULL); | |
f6ac5f3d PA |
2986 | if (t != NULL) |
2987 | return t->supports_disable_randomization (); | |
03583c20 UW |
2988 | return 0; |
2989 | } | |
2990 | ||
2991 | int | |
2992 | target_supports_disable_randomization (void) | |
2993 | { | |
328d42d8 | 2994 | return current_inferior ()->top_target ()->supports_disable_randomization (); |
03583c20 | 2995 | } |
9908b566 | 2996 | |
1fb77080 SDJ |
2997 | /* See target/target.h. */ |
2998 | ||
2999 | int | |
3000 | target_supports_multi_process (void) | |
3001 | { | |
328d42d8 | 3002 | return current_inferior ()->top_target ()->supports_multi_process (); |
1fb77080 SDJ |
3003 | } |
3004 | ||
b7b030ad TT |
3005 | /* See target.h. */ |
3006 | ||
9018be22 | 3007 | gdb::optional<gdb::char_vector> |
07e059b5 VP |
3008 | target_get_osdata (const char *type) |
3009 | { | |
07e059b5 VP |
3010 | struct target_ops *t; |
3011 | ||
739ef7fb PA |
3012 | /* If we're already connected to something that can get us OS |
3013 | related data, use it. Otherwise, try using the native | |
3014 | target. */ | |
f6ac5f3d PA |
3015 | t = find_target_at (process_stratum); |
3016 | if (t == NULL) | |
739ef7fb | 3017 | t = find_default_run_target ("get OS data"); |
07e059b5 VP |
3018 | |
3019 | if (!t) | |
9018be22 | 3020 | return {}; |
07e059b5 | 3021 | |
6d097e65 | 3022 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
3023 | } |
3024 | ||
8eaff7cd TT |
3025 | /* Determine the current address space of thread PTID. */ |
3026 | ||
3027 | struct address_space * | |
3028 | target_thread_address_space (ptid_t ptid) | |
3029 | { | |
3030 | struct address_space *aspace; | |
3031 | ||
328d42d8 | 3032 | aspace = current_inferior ()->top_target ()->thread_address_space (ptid); |
8eaff7cd TT |
3033 | gdb_assert (aspace != NULL); |
3034 | ||
8eaff7cd TT |
3035 | return aspace; |
3036 | } | |
3037 | ||
b6a8c27b PA |
3038 | /* See target.h. */ |
3039 | ||
3040 | target_ops * | |
3041 | target_ops::beneath () const | |
3042 | { | |
5b6d1e4f | 3043 | return current_inferior ()->find_target_beneath (this); |
b6a8c27b PA |
3044 | } |
3045 | ||
f6ac5f3d PA |
3046 | void |
3047 | target_ops::close () | |
3048 | { | |
3049 | } | |
3050 | ||
3051 | bool | |
3052 | target_ops::can_attach () | |
3053 | { | |
3054 | return 0; | |
3055 | } | |
3056 | ||
3057 | void | |
3058 | target_ops::attach (const char *, int) | |
3059 | { | |
3060 | gdb_assert_not_reached ("target_ops::attach called"); | |
3061 | } | |
3062 | ||
3063 | bool | |
3064 | target_ops::can_create_inferior () | |
3065 | { | |
3066 | return 0; | |
3067 | } | |
3068 | ||
3069 | void | |
3070 | target_ops::create_inferior (const char *, const std::string &, | |
3071 | char **, int) | |
3072 | { | |
3073 | gdb_assert_not_reached ("target_ops::create_inferior called"); | |
3074 | } | |
3075 | ||
57810aa7 | 3076 | bool |
f6ac5f3d PA |
3077 | target_ops::can_run () |
3078 | { | |
57810aa7 | 3079 | return false; |
f6ac5f3d PA |
3080 | } |
3081 | ||
3082 | int | |
3083 | target_can_run () | |
3084 | { | |
328d42d8 SM |
3085 | for (target_ops *t = current_inferior ()->top_target (); |
3086 | t != NULL; | |
3087 | t = t->beneath ()) | |
f6ac5f3d PA |
3088 | { |
3089 | if (t->can_run ()) | |
3090 | return 1; | |
3091 | } | |
3092 | ||
3093 | return 0; | |
3094 | } | |
7313baad UW |
3095 | |
3096 | /* Target file operations. */ | |
3097 | ||
3098 | static struct target_ops * | |
3099 | default_fileio_target (void) | |
3100 | { | |
f6ac5f3d PA |
3101 | struct target_ops *t; |
3102 | ||
7313baad UW |
3103 | /* If we're already connected to something that can perform |
3104 | file I/O, use it. Otherwise, try using the native target. */ | |
f6ac5f3d PA |
3105 | t = find_target_at (process_stratum); |
3106 | if (t != NULL) | |
3107 | return t; | |
3108 | return find_default_run_target ("file I/O"); | |
7313baad UW |
3109 | } |
3110 | ||
1c4b552b GB |
3111 | /* File handle for target file operations. */ |
3112 | ||
5ff79300 | 3113 | struct fileio_fh_t |
1c4b552b | 3114 | { |
20db9c52 PA |
3115 | /* The target on which this file is open. NULL if the target is |
3116 | meanwhile closed while the handle is open. */ | |
5ff79300 | 3117 | target_ops *target; |
1c4b552b GB |
3118 | |
3119 | /* The file descriptor on the target. */ | |
5ff79300 | 3120 | int target_fd; |
1c4b552b | 3121 | |
5ff79300 PA |
3122 | /* Check whether this fileio_fh_t represents a closed file. */ |
3123 | bool is_closed () | |
3124 | { | |
3125 | return target_fd < 0; | |
3126 | } | |
3127 | }; | |
1c4b552b GB |
3128 | |
3129 | /* Vector of currently open file handles. The value returned by | |
3130 | target_fileio_open and passed as the FD argument to other | |
3131 | target_fileio_* functions is an index into this vector. This | |
3132 | vector's entries are never freed; instead, files are marked as | |
3133 | closed, and the handle becomes available for reuse. */ | |
5ff79300 | 3134 | static std::vector<fileio_fh_t> fileio_fhandles; |
1c4b552b GB |
3135 | |
3136 | /* Index into fileio_fhandles of the lowest handle that might be | |
3137 | closed. This permits handle reuse without searching the whole | |
3138 | list each time a new file is opened. */ | |
3139 | static int lowest_closed_fd; | |
3140 | ||
d7cb0ef3 | 3141 | /* See target.h. */ |
20db9c52 | 3142 | |
d7cb0ef3 | 3143 | void |
20db9c52 PA |
3144 | fileio_handles_invalidate_target (target_ops *targ) |
3145 | { | |
3146 | for (fileio_fh_t &fh : fileio_fhandles) | |
3147 | if (fh.target == targ) | |
3148 | fh.target = NULL; | |
3149 | } | |
3150 | ||
1c4b552b GB |
3151 | /* Acquire a target fileio file descriptor. */ |
3152 | ||
3153 | static int | |
5ff79300 | 3154 | acquire_fileio_fd (target_ops *target, int target_fd) |
1c4b552b | 3155 | { |
1c4b552b | 3156 | /* Search for closed handles to reuse. */ |
5ff79300 PA |
3157 | for (; lowest_closed_fd < fileio_fhandles.size (); lowest_closed_fd++) |
3158 | { | |
3159 | fileio_fh_t &fh = fileio_fhandles[lowest_closed_fd]; | |
3160 | ||
3161 | if (fh.is_closed ()) | |
3162 | break; | |
3163 | } | |
1c4b552b GB |
3164 | |
3165 | /* Push a new handle if no closed handles were found. */ | |
5ff79300 PA |
3166 | if (lowest_closed_fd == fileio_fhandles.size ()) |
3167 | fileio_fhandles.push_back (fileio_fh_t {target, target_fd}); | |
3168 | else | |
3169 | fileio_fhandles[lowest_closed_fd] = {target, target_fd}; | |
1c4b552b | 3170 | |
5ff79300 PA |
3171 | /* Should no longer be marked closed. */ |
3172 | gdb_assert (!fileio_fhandles[lowest_closed_fd].is_closed ()); | |
1c4b552b GB |
3173 | |
3174 | /* Return its index, and start the next lookup at | |
3175 | the next index. */ | |
3176 | return lowest_closed_fd++; | |
3177 | } | |
3178 | ||
3179 | /* Release a target fileio file descriptor. */ | |
3180 | ||
3181 | static void | |
3182 | release_fileio_fd (int fd, fileio_fh_t *fh) | |
3183 | { | |
5ff79300 | 3184 | fh->target_fd = -1; |
325fac50 | 3185 | lowest_closed_fd = std::min (lowest_closed_fd, fd); |
1c4b552b GB |
3186 | } |
3187 | ||
3188 | /* Return a pointer to the fileio_fhandle_t corresponding to FD. */ | |
3189 | ||
5ff79300 PA |
3190 | static fileio_fh_t * |
3191 | fileio_fd_to_fh (int fd) | |
3192 | { | |
3193 | return &fileio_fhandles[fd]; | |
3194 | } | |
1c4b552b | 3195 | |
f6ac5f3d PA |
3196 | |
3197 | /* Default implementations of file i/o methods. We don't want these | |
3198 | to delegate automatically, because we need to know which target | |
3199 | supported the method, in order to call it directly from within | |
3200 | pread/pwrite, etc. */ | |
3201 | ||
3202 | int | |
3203 | target_ops::fileio_open (struct inferior *inf, const char *filename, | |
3204 | int flags, int mode, int warn_if_slow, | |
b872057a | 3205 | fileio_error *target_errno) |
f6ac5f3d PA |
3206 | { |
3207 | *target_errno = FILEIO_ENOSYS; | |
3208 | return -1; | |
3209 | } | |
3210 | ||
3211 | int | |
3212 | target_ops::fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
b872057a | 3213 | ULONGEST offset, fileio_error *target_errno) |
f6ac5f3d PA |
3214 | { |
3215 | *target_errno = FILEIO_ENOSYS; | |
3216 | return -1; | |
3217 | } | |
3218 | ||
3219 | int | |
3220 | target_ops::fileio_pread (int fd, gdb_byte *read_buf, int len, | |
b872057a | 3221 | ULONGEST offset, fileio_error *target_errno) |
f6ac5f3d PA |
3222 | { |
3223 | *target_errno = FILEIO_ENOSYS; | |
3224 | return -1; | |
3225 | } | |
3226 | ||
3227 | int | |
b872057a | 3228 | target_ops::fileio_fstat (int fd, struct stat *sb, fileio_error *target_errno) |
f6ac5f3d PA |
3229 | { |
3230 | *target_errno = FILEIO_ENOSYS; | |
3231 | return -1; | |
3232 | } | |
3233 | ||
3234 | int | |
b872057a | 3235 | target_ops::fileio_close (int fd, fileio_error *target_errno) |
f6ac5f3d PA |
3236 | { |
3237 | *target_errno = FILEIO_ENOSYS; | |
3238 | return -1; | |
3239 | } | |
3240 | ||
3241 | int | |
3242 | target_ops::fileio_unlink (struct inferior *inf, const char *filename, | |
b872057a | 3243 | fileio_error *target_errno) |
f6ac5f3d PA |
3244 | { |
3245 | *target_errno = FILEIO_ENOSYS; | |
3246 | return -1; | |
3247 | } | |
3248 | ||
3249 | gdb::optional<std::string> | |
3250 | target_ops::fileio_readlink (struct inferior *inf, const char *filename, | |
b872057a | 3251 | fileio_error *target_errno) |
f6ac5f3d PA |
3252 | { |
3253 | *target_errno = FILEIO_ENOSYS; | |
3254 | return {}; | |
3255 | } | |
3256 | ||
4111f652 | 3257 | /* See target.h. */ |
12e2a5fd | 3258 | |
4111f652 PA |
3259 | int |
3260 | target_fileio_open (struct inferior *inf, const char *filename, | |
b872057a | 3261 | int flags, int mode, bool warn_if_slow, fileio_error *target_errno) |
7313baad | 3262 | { |
b6a8c27b | 3263 | for (target_ops *t = default_fileio_target (); t != NULL; t = t->beneath ()) |
7313baad | 3264 | { |
f6ac5f3d PA |
3265 | int fd = t->fileio_open (inf, filename, flags, mode, |
3266 | warn_if_slow, target_errno); | |
7313baad | 3267 | |
f6ac5f3d PA |
3268 | if (fd == -1 && *target_errno == FILEIO_ENOSYS) |
3269 | continue; | |
1c4b552b | 3270 | |
f6ac5f3d PA |
3271 | if (fd < 0) |
3272 | fd = -1; | |
3273 | else | |
3274 | fd = acquire_fileio_fd (t, fd); | |
3275 | ||
3276 | if (targetdebug) | |
6cb06a8c TT |
3277 | gdb_printf (gdb_stdlog, |
3278 | "target_fileio_open (%d,%s,0x%x,0%o,%d)" | |
3279 | " = %d (%d)\n", | |
3280 | inf == NULL ? 0 : inf->num, | |
3281 | filename, flags, mode, | |
3282 | warn_if_slow, fd, | |
3283 | fd != -1 ? 0 : *target_errno); | |
f6ac5f3d | 3284 | return fd; |
7313baad UW |
3285 | } |
3286 | ||
3287 | *target_errno = FILEIO_ENOSYS; | |
3288 | return -1; | |
3289 | } | |
3290 | ||
12e2a5fd GB |
3291 | /* See target.h. */ |
3292 | ||
7313baad UW |
3293 | int |
3294 | target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
b872057a | 3295 | ULONGEST offset, fileio_error *target_errno) |
7313baad | 3296 | { |
1c4b552b GB |
3297 | fileio_fh_t *fh = fileio_fd_to_fh (fd); |
3298 | int ret = -1; | |
7313baad | 3299 | |
5ff79300 | 3300 | if (fh->is_closed ()) |
b872057a | 3301 | *target_errno = FILEIO_EBADF; |
20db9c52 | 3302 | else if (fh->target == NULL) |
b872057a | 3303 | *target_errno = FILEIO_EIO; |
1c4b552b | 3304 | else |
f6ac5f3d PA |
3305 | ret = fh->target->fileio_pwrite (fh->target_fd, write_buf, |
3306 | len, offset, target_errno); | |
7313baad | 3307 | |
1c4b552b | 3308 | if (targetdebug) |
6cb06a8c TT |
3309 | gdb_printf (gdb_stdlog, |
3310 | "target_fileio_pwrite (%d,...,%d,%s) " | |
3311 | "= %d (%d)\n", | |
3312 | fd, len, pulongest (offset), | |
3313 | ret, ret != -1 ? 0 : *target_errno); | |
1c4b552b | 3314 | return ret; |
7313baad UW |
3315 | } |
3316 | ||
12e2a5fd GB |
3317 | /* See target.h. */ |
3318 | ||
7313baad UW |
3319 | int |
3320 | target_fileio_pread (int fd, gdb_byte *read_buf, int len, | |
b872057a | 3321 | ULONGEST offset, fileio_error *target_errno) |
7313baad | 3322 | { |
1c4b552b GB |
3323 | fileio_fh_t *fh = fileio_fd_to_fh (fd); |
3324 | int ret = -1; | |
7313baad | 3325 | |
5ff79300 | 3326 | if (fh->is_closed ()) |
b872057a | 3327 | *target_errno = FILEIO_EBADF; |
20db9c52 | 3328 | else if (fh->target == NULL) |
b872057a | 3329 | *target_errno = FILEIO_EIO; |
1c4b552b | 3330 | else |
f6ac5f3d PA |
3331 | ret = fh->target->fileio_pread (fh->target_fd, read_buf, |
3332 | len, offset, target_errno); | |
7313baad | 3333 | |
1c4b552b | 3334 | if (targetdebug) |
6cb06a8c TT |
3335 | gdb_printf (gdb_stdlog, |
3336 | "target_fileio_pread (%d,...,%d,%s) " | |
3337 | "= %d (%d)\n", | |
3338 | fd, len, pulongest (offset), | |
3339 | ret, ret != -1 ? 0 : *target_errno); | |
9b15c1f0 GB |
3340 | return ret; |
3341 | } | |
3342 | ||
3343 | /* See target.h. */ | |
12e2a5fd | 3344 | |
9b15c1f0 | 3345 | int |
b872057a | 3346 | target_fileio_fstat (int fd, struct stat *sb, fileio_error *target_errno) |
9b15c1f0 GB |
3347 | { |
3348 | fileio_fh_t *fh = fileio_fd_to_fh (fd); | |
3349 | int ret = -1; | |
3350 | ||
5ff79300 | 3351 | if (fh->is_closed ()) |
b872057a | 3352 | *target_errno = FILEIO_EBADF; |
20db9c52 | 3353 | else if (fh->target == NULL) |
b872057a | 3354 | *target_errno = FILEIO_EIO; |
9b15c1f0 | 3355 | else |
f6ac5f3d | 3356 | ret = fh->target->fileio_fstat (fh->target_fd, sb, target_errno); |
9b15c1f0 GB |
3357 | |
3358 | if (targetdebug) | |
6cb06a8c TT |
3359 | gdb_printf (gdb_stdlog, |
3360 | "target_fileio_fstat (%d) = %d (%d)\n", | |
3361 | fd, ret, ret != -1 ? 0 : *target_errno); | |
1c4b552b | 3362 | return ret; |
7313baad UW |
3363 | } |
3364 | ||
12e2a5fd GB |
3365 | /* See target.h. */ |
3366 | ||
7313baad | 3367 | int |
b872057a | 3368 | target_fileio_close (int fd, fileio_error *target_errno) |
7313baad | 3369 | { |
1c4b552b GB |
3370 | fileio_fh_t *fh = fileio_fd_to_fh (fd); |
3371 | int ret = -1; | |
7313baad | 3372 | |
5ff79300 | 3373 | if (fh->is_closed ()) |
b872057a | 3374 | *target_errno = FILEIO_EBADF; |
1c4b552b | 3375 | else |
7313baad | 3376 | { |
20db9c52 | 3377 | if (fh->target != NULL) |
f6ac5f3d PA |
3378 | ret = fh->target->fileio_close (fh->target_fd, |
3379 | target_errno); | |
20db9c52 PA |
3380 | else |
3381 | ret = 0; | |
1c4b552b | 3382 | release_fileio_fd (fd, fh); |
7313baad UW |
3383 | } |
3384 | ||
1c4b552b | 3385 | if (targetdebug) |
6cb06a8c TT |
3386 | gdb_printf (gdb_stdlog, |
3387 | "target_fileio_close (%d) = %d (%d)\n", | |
3388 | fd, ret, ret != -1 ? 0 : *target_errno); | |
1c4b552b | 3389 | return ret; |
7313baad UW |
3390 | } |
3391 | ||
12e2a5fd GB |
3392 | /* See target.h. */ |
3393 | ||
7313baad | 3394 | int |
07c138c8 | 3395 | target_fileio_unlink (struct inferior *inf, const char *filename, |
b872057a | 3396 | fileio_error *target_errno) |
7313baad | 3397 | { |
b6a8c27b | 3398 | for (target_ops *t = default_fileio_target (); t != NULL; t = t->beneath ()) |
7313baad | 3399 | { |
f6ac5f3d | 3400 | int ret = t->fileio_unlink (inf, filename, target_errno); |
7313baad | 3401 | |
f6ac5f3d PA |
3402 | if (ret == -1 && *target_errno == FILEIO_ENOSYS) |
3403 | continue; | |
3404 | ||
3405 | if (targetdebug) | |
6cb06a8c TT |
3406 | gdb_printf (gdb_stdlog, |
3407 | "target_fileio_unlink (%d,%s)" | |
3408 | " = %d (%d)\n", | |
3409 | inf == NULL ? 0 : inf->num, filename, | |
3410 | ret, ret != -1 ? 0 : *target_errno); | |
f6ac5f3d | 3411 | return ret; |
7313baad UW |
3412 | } |
3413 | ||
3414 | *target_errno = FILEIO_ENOSYS; | |
3415 | return -1; | |
3416 | } | |
3417 | ||
12e2a5fd GB |
3418 | /* See target.h. */ |
3419 | ||
e0d3522b | 3420 | gdb::optional<std::string> |
07c138c8 | 3421 | target_fileio_readlink (struct inferior *inf, const char *filename, |
b872057a | 3422 | fileio_error *target_errno) |
b9e7b9c3 | 3423 | { |
b6a8c27b | 3424 | for (target_ops *t = default_fileio_target (); t != NULL; t = t->beneath ()) |
b9e7b9c3 | 3425 | { |
f6ac5f3d PA |
3426 | gdb::optional<std::string> ret |
3427 | = t->fileio_readlink (inf, filename, target_errno); | |
b9e7b9c3 | 3428 | |
f6ac5f3d PA |
3429 | if (!ret.has_value () && *target_errno == FILEIO_ENOSYS) |
3430 | continue; | |
3431 | ||
3432 | if (targetdebug) | |
6cb06a8c TT |
3433 | gdb_printf (gdb_stdlog, |
3434 | "target_fileio_readlink (%d,%s)" | |
3435 | " = %s (%d)\n", | |
3436 | inf == NULL ? 0 : inf->num, | |
3437 | filename, ret ? ret->c_str () : "(nil)", | |
3438 | ret ? 0 : *target_errno); | |
f6ac5f3d | 3439 | return ret; |
b9e7b9c3 UW |
3440 | } |
3441 | ||
3442 | *target_errno = FILEIO_ENOSYS; | |
e0d3522b | 3443 | return {}; |
b9e7b9c3 UW |
3444 | } |
3445 | ||
770623f7 TT |
3446 | /* Like scoped_fd, but specific to target fileio. */ |
3447 | ||
3448 | class scoped_target_fd | |
7313baad | 3449 | { |
770623f7 TT |
3450 | public: |
3451 | explicit scoped_target_fd (int fd) noexcept | |
3452 | : m_fd (fd) | |
3453 | { | |
3454 | } | |
7313baad | 3455 | |
770623f7 TT |
3456 | ~scoped_target_fd () |
3457 | { | |
3458 | if (m_fd >= 0) | |
3459 | { | |
b872057a | 3460 | fileio_error target_errno; |
770623f7 TT |
3461 | |
3462 | target_fileio_close (m_fd, &target_errno); | |
3463 | } | |
3464 | } | |
3465 | ||
3466 | DISABLE_COPY_AND_ASSIGN (scoped_target_fd); | |
3467 | ||
3468 | int get () const noexcept | |
3469 | { | |
3470 | return m_fd; | |
3471 | } | |
3472 | ||
3473 | private: | |
3474 | int m_fd; | |
3475 | }; | |
7313baad | 3476 | |
07c138c8 GB |
3477 | /* Read target file FILENAME, in the filesystem as seen by INF. If |
3478 | INF is NULL, use the filesystem seen by the debugger (GDB or, for | |
3479 | remote targets, the remote stub). Store the result in *BUF_P and | |
3480 | return the size of the transferred data. PADDING additional bytes | |
3481 | are available in *BUF_P. This is a helper function for | |
3482 | target_fileio_read_alloc; see the declaration of that function for | |
3483 | more information. */ | |
7313baad | 3484 | |
f7af1fcd JK |
3485 | static LONGEST |
3486 | target_fileio_read_alloc_1 (struct inferior *inf, const char *filename, | |
3487 | gdb_byte **buf_p, int padding) | |
3488 | { | |
db1ff28b JK |
3489 | size_t buf_alloc, buf_pos; |
3490 | gdb_byte *buf; | |
3491 | LONGEST n; | |
b872057a | 3492 | fileio_error target_errno; |
f7af1fcd | 3493 | |
770623f7 | 3494 | scoped_target_fd fd (target_fileio_open (inf, filename, FILEIO_O_RDONLY, |
4111f652 | 3495 | 0700, false, &target_errno)); |
770623f7 | 3496 | if (fd.get () == -1) |
f7af1fcd JK |
3497 | return -1; |
3498 | ||
db1ff28b JK |
3499 | /* Start by reading up to 4K at a time. The target will throttle |
3500 | this number down if necessary. */ | |
3501 | buf_alloc = 4096; | |
224c3ddb | 3502 | buf = (gdb_byte *) xmalloc (buf_alloc); |
db1ff28b JK |
3503 | buf_pos = 0; |
3504 | while (1) | |
3505 | { | |
770623f7 | 3506 | n = target_fileio_pread (fd.get (), &buf[buf_pos], |
db1ff28b JK |
3507 | buf_alloc - buf_pos - padding, buf_pos, |
3508 | &target_errno); | |
3509 | if (n < 0) | |
3510 | { | |
3511 | /* An error occurred. */ | |
db1ff28b JK |
3512 | xfree (buf); |
3513 | return -1; | |
3514 | } | |
3515 | else if (n == 0) | |
3516 | { | |
3517 | /* Read all there was. */ | |
db1ff28b JK |
3518 | if (buf_pos == 0) |
3519 | xfree (buf); | |
3520 | else | |
3521 | *buf_p = buf; | |
3522 | return buf_pos; | |
3523 | } | |
3524 | ||
3525 | buf_pos += n; | |
3526 | ||
3527 | /* If the buffer is filling up, expand it. */ | |
3528 | if (buf_alloc < buf_pos * 2) | |
3529 | { | |
3530 | buf_alloc *= 2; | |
224c3ddb | 3531 | buf = (gdb_byte *) xrealloc (buf, buf_alloc); |
db1ff28b JK |
3532 | } |
3533 | ||
3534 | QUIT; | |
3535 | } | |
f7af1fcd JK |
3536 | } |
3537 | ||
12e2a5fd | 3538 | /* See target.h. */ |
7313baad UW |
3539 | |
3540 | LONGEST | |
07c138c8 GB |
3541 | target_fileio_read_alloc (struct inferior *inf, const char *filename, |
3542 | gdb_byte **buf_p) | |
7313baad | 3543 | { |
07c138c8 | 3544 | return target_fileio_read_alloc_1 (inf, filename, buf_p, 0); |
7313baad UW |
3545 | } |
3546 | ||
db1ff28b | 3547 | /* See target.h. */ |
f7af1fcd | 3548 | |
87028b87 | 3549 | gdb::unique_xmalloc_ptr<char> |
f7af1fcd JK |
3550 | target_fileio_read_stralloc (struct inferior *inf, const char *filename) |
3551 | { | |
db1ff28b JK |
3552 | gdb_byte *buffer; |
3553 | char *bufstr; | |
3554 | LONGEST i, transferred; | |
3555 | ||
3556 | transferred = target_fileio_read_alloc_1 (inf, filename, &buffer, 1); | |
3557 | bufstr = (char *) buffer; | |
3558 | ||
3559 | if (transferred < 0) | |
87028b87 | 3560 | return gdb::unique_xmalloc_ptr<char> (nullptr); |
db1ff28b JK |
3561 | |
3562 | if (transferred == 0) | |
b02f78f9 | 3563 | return make_unique_xstrdup (""); |
db1ff28b JK |
3564 | |
3565 | bufstr[transferred] = 0; | |
3566 | ||
3567 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
3568 | for (i = strlen (bufstr); i < transferred; i++) | |
3569 | if (bufstr[i] != 0) | |
3570 | { | |
3571 | warning (_("target file %s " | |
3572 | "contained unexpected null characters"), | |
3573 | filename); | |
3574 | break; | |
3575 | } | |
3576 | ||
87028b87 | 3577 | return gdb::unique_xmalloc_ptr<char> (bufstr); |
f7af1fcd | 3578 | } |
7313baad | 3579 | |
db1ff28b | 3580 | |
e0d24f8d | 3581 | static int |
31568a15 TT |
3582 | default_region_ok_for_hw_watchpoint (struct target_ops *self, |
3583 | CORE_ADDR addr, int len) | |
e0d24f8d | 3584 | { |
f5656ead | 3585 | return (len <= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT); |
ccaa32c7 GS |
3586 | } |
3587 | ||
5009afc5 AS |
3588 | static int |
3589 | default_watchpoint_addr_within_range (struct target_ops *target, | |
3590 | CORE_ADDR addr, | |
3591 | CORE_ADDR start, int length) | |
3592 | { | |
3593 | return addr >= start && addr < start + length; | |
3594 | } | |
3595 | ||
8b06beed TT |
3596 | /* See target.h. */ |
3597 | ||
a1740ee1 PA |
3598 | target_ops * |
3599 | target_stack::find_beneath (const target_ops *t) const | |
8b06beed | 3600 | { |
a1740ee1 | 3601 | /* Look for a non-empty slot at stratum levels beneath T's. */ |
66b4deae | 3602 | for (int stratum = t->stratum () - 1; stratum >= 0; --stratum) |
91e3d1d1 AB |
3603 | if (m_stack[stratum].get () != NULL) |
3604 | return m_stack[stratum].get (); | |
8b06beed TT |
3605 | |
3606 | return NULL; | |
3607 | } | |
3608 | ||
a1740ee1 PA |
3609 | /* See target.h. */ |
3610 | ||
3611 | struct target_ops * | |
3612 | find_target_at (enum strata stratum) | |
3613 | { | |
5b6d1e4f | 3614 | return current_inferior ()->target_at (stratum); |
a1740ee1 PA |
3615 | } |
3616 | ||
c906108c | 3617 | \f |
0f48b757 PA |
3618 | |
3619 | /* See target.h */ | |
3620 | ||
3621 | void | |
3622 | target_announce_detach (int from_tty) | |
3623 | { | |
3624 | pid_t pid; | |
a121b7c1 | 3625 | const char *exec_file; |
0f48b757 PA |
3626 | |
3627 | if (!from_tty) | |
3628 | return; | |
3629 | ||
e99b03dc | 3630 | pid = inferior_ptid.pid (); |
41e321a8 TT |
3631 | exec_file = get_exec_file (0); |
3632 | if (exec_file == nullptr) | |
6cb06a8c TT |
3633 | gdb_printf ("Detaching from pid %s\n", |
3634 | target_pid_to_str (ptid_t (pid)).c_str ()); | |
41e321a8 | 3635 | else |
6cb06a8c TT |
3636 | gdb_printf (_("Detaching from program: %s, %s\n"), exec_file, |
3637 | target_pid_to_str (ptid_t (pid)).c_str ()); | |
bc521517 TT |
3638 | } |
3639 | ||
3640 | /* See target.h */ | |
3641 | ||
3642 | void | |
3643 | target_announce_attach (int from_tty, int pid) | |
3644 | { | |
3645 | if (!from_tty) | |
3646 | return; | |
3647 | ||
3648 | const char *exec_file = get_exec_file (0); | |
3649 | ||
249f1cf8 | 3650 | if (exec_file != nullptr) |
6cb06a8c TT |
3651 | gdb_printf ("Attaching to program: %s, %s\n", exec_file, |
3652 | target_pid_to_str (ptid_t (pid)).c_str ()); | |
bc521517 | 3653 | else |
6cb06a8c TT |
3654 | gdb_printf ("Attaching to %s\n", |
3655 | target_pid_to_str (ptid_t (pid)).c_str ()); | |
0f48b757 PA |
3656 | } |
3657 | ||
c906108c SS |
3658 | /* The inferior process has died. Long live the inferior! */ |
3659 | ||
3660 | void | |
fba45db2 | 3661 | generic_mourn_inferior (void) |
c906108c | 3662 | { |
00431a78 | 3663 | inferior *inf = current_inferior (); |
c906108c | 3664 | |
a0776b13 | 3665 | switch_to_no_thread (); |
7f9f62ba | 3666 | |
f59f708a PA |
3667 | /* Mark breakpoints uninserted in case something tries to delete a |
3668 | breakpoint while we delete the inferior's threads (which would | |
3669 | fail, since the inferior is long gone). */ | |
3670 | mark_breakpoints_out (); | |
3671 | ||
00431a78 PA |
3672 | if (inf->pid != 0) |
3673 | exit_inferior (inf); | |
7f9f62ba | 3674 | |
f59f708a PA |
3675 | /* Note this wipes step-resume breakpoints, so needs to be done |
3676 | after exit_inferior, which ends up referencing the step-resume | |
3677 | breakpoints through clear_thread_inferior_resources. */ | |
c906108c | 3678 | breakpoint_init_inferior (inf_exited); |
f59f708a | 3679 | |
c906108c SS |
3680 | registers_changed (); |
3681 | ||
c906108c SS |
3682 | reopen_exec_file (); |
3683 | reinit_frame_cache (); | |
3684 | ||
9a4105ab AC |
3685 | if (deprecated_detach_hook) |
3686 | deprecated_detach_hook (); | |
c906108c SS |
3687 | } |
3688 | \f | |
fd0a2a6f MK |
3689 | /* Convert a normal process ID to a string. Returns the string in a |
3690 | static buffer. */ | |
c906108c | 3691 | |
a068643d | 3692 | std::string |
39f77062 | 3693 | normal_pid_to_str (ptid_t ptid) |
c906108c | 3694 | { |
a068643d | 3695 | return string_printf ("process %d", ptid.pid ()); |
c906108c SS |
3696 | } |
3697 | ||
a068643d | 3698 | static std::string |
770234d3 | 3699 | default_pid_to_str (struct target_ops *ops, ptid_t ptid) |
117de6a9 PA |
3700 | { |
3701 | return normal_pid_to_str (ptid); | |
3702 | } | |
3703 | ||
9b4eba8e HZ |
3704 | /* Error-catcher for target_find_memory_regions. */ |
3705 | static int | |
2e73927c TT |
3706 | dummy_find_memory_regions (struct target_ops *self, |
3707 | find_memory_region_ftype ignore1, void *ignore2) | |
be4d1333 | 3708 | { |
9b4eba8e | 3709 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3710 | return 0; |
3711 | } | |
3712 | ||
9b4eba8e | 3713 | /* Error-catcher for target_make_corefile_notes. */ |
24f5300a | 3714 | static gdb::unique_xmalloc_ptr<char> |
fc6691b2 TT |
3715 | dummy_make_corefile_notes (struct target_ops *self, |
3716 | bfd *ignore1, int *ignore2) | |
be4d1333 | 3717 | { |
9b4eba8e | 3718 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3719 | return NULL; |
3720 | } | |
3721 | ||
f6ac5f3d PA |
3722 | #include "target-delegates.c" |
3723 | ||
06b5b831 TT |
3724 | /* The initial current target, so that there is always a semi-valid |
3725 | current target. */ | |
3726 | ||
3727 | static dummy_target the_dummy_target; | |
c906108c | 3728 | |
5b6d1e4f PA |
3729 | /* See target.h. */ |
3730 | ||
3731 | target_ops * | |
3732 | get_dummy_target () | |
3733 | { | |
3734 | return &the_dummy_target; | |
3735 | } | |
3736 | ||
d9f719f1 PA |
3737 | static const target_info dummy_target_info = { |
3738 | "None", | |
3739 | N_("None"), | |
3740 | "" | |
3741 | }; | |
3742 | ||
66b4deae PA |
3743 | strata |
3744 | dummy_target::stratum () const | |
f6ac5f3d | 3745 | { |
66b4deae | 3746 | return dummy_stratum; |
f6ac5f3d PA |
3747 | } |
3748 | ||
66b4deae PA |
3749 | strata |
3750 | debug_target::stratum () const | |
f6ac5f3d | 3751 | { |
66b4deae | 3752 | return debug_stratum; |
f6ac5f3d PA |
3753 | } |
3754 | ||
d9f719f1 PA |
3755 | const target_info & |
3756 | dummy_target::info () const | |
f6ac5f3d | 3757 | { |
d9f719f1 | 3758 | return dummy_target_info; |
f6ac5f3d PA |
3759 | } |
3760 | ||
d9f719f1 PA |
3761 | const target_info & |
3762 | debug_target::info () const | |
f6ac5f3d | 3763 | { |
b6a8c27b | 3764 | return beneath ()->info (); |
f6ac5f3d PA |
3765 | } |
3766 | ||
c906108c | 3767 | \f |
c906108c | 3768 | |
28439f5e PA |
3769 | int |
3770 | target_thread_alive (ptid_t ptid) | |
c906108c | 3771 | { |
328d42d8 | 3772 | return current_inferior ()->top_target ()->thread_alive (ptid); |
28439f5e PA |
3773 | } |
3774 | ||
3775 | void | |
e8032dde | 3776 | target_update_thread_list (void) |
28439f5e | 3777 | { |
328d42d8 | 3778 | current_inferior ()->top_target ()->update_thread_list (); |
c906108c SS |
3779 | } |
3780 | ||
d914c394 SS |
3781 | void |
3782 | target_stop (ptid_t ptid) | |
3783 | { | |
1192f124 SM |
3784 | process_stratum_target *proc_target = current_inferior ()->process_target (); |
3785 | ||
3786 | gdb_assert (!proc_target->commit_resumed_state); | |
3787 | ||
d914c394 SS |
3788 | if (!may_stop) |
3789 | { | |
3790 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3791 | return; | |
3792 | } | |
3793 | ||
328d42d8 | 3794 | current_inferior ()->top_target ()->stop (ptid); |
d914c394 SS |
3795 | } |
3796 | ||
bfedc46a | 3797 | void |
e671cd59 | 3798 | target_interrupt () |
bfedc46a PA |
3799 | { |
3800 | if (!may_stop) | |
3801 | { | |
3802 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3803 | return; | |
3804 | } | |
3805 | ||
328d42d8 | 3806 | current_inferior ()->top_target ()->interrupt (); |
bfedc46a PA |
3807 | } |
3808 | ||
abc56d60 PA |
3809 | /* See target.h. */ |
3810 | ||
93692b58 PA |
3811 | void |
3812 | target_pass_ctrlc (void) | |
3813 | { | |
5b6d1e4f PA |
3814 | /* Pass the Ctrl-C to the first target that has a thread |
3815 | running. */ | |
3816 | for (inferior *inf : all_inferiors ()) | |
3817 | { | |
3818 | target_ops *proc_target = inf->process_target (); | |
3819 | if (proc_target == NULL) | |
3820 | continue; | |
3821 | ||
43667cc6 | 3822 | for (thread_info *thr : inf->non_exited_threads ()) |
5b6d1e4f PA |
3823 | { |
3824 | /* A thread can be THREAD_STOPPED and executing, while | |
3825 | running an infcall. */ | |
611841bb | 3826 | if (thr->state == THREAD_RUNNING || thr->executing ()) |
5b6d1e4f PA |
3827 | { |
3828 | /* We can get here quite deep in target layers. Avoid | |
3829 | switching thread context or anything that would | |
3830 | communicate with the target (e.g., to fetch | |
3831 | registers), or flushing e.g., the frame cache. We | |
3832 | just switch inferior in order to be able to call | |
3833 | through the target_stack. */ | |
3834 | scoped_restore_current_inferior restore_inferior; | |
3835 | set_current_inferior (inf); | |
328d42d8 | 3836 | current_inferior ()->top_target ()->pass_ctrlc (); |
5b6d1e4f PA |
3837 | return; |
3838 | } | |
3839 | } | |
3840 | } | |
93692b58 PA |
3841 | } |
3842 | ||
3843 | /* See target.h. */ | |
3844 | ||
3845 | void | |
3846 | default_target_pass_ctrlc (struct target_ops *ops) | |
3847 | { | |
e671cd59 | 3848 | target_interrupt (); |
93692b58 PA |
3849 | } |
3850 | ||
f8c1d06b GB |
3851 | /* See target/target.h. */ |
3852 | ||
3853 | void | |
03f4463b | 3854 | target_stop_and_wait (ptid_t ptid) |
f8c1d06b GB |
3855 | { |
3856 | struct target_waitstatus status; | |
491144b5 | 3857 | bool was_non_stop = non_stop; |
f8c1d06b | 3858 | |
491144b5 | 3859 | non_stop = true; |
f8c1d06b GB |
3860 | target_stop (ptid); |
3861 | ||
f8c1d06b GB |
3862 | target_wait (ptid, &status, 0); |
3863 | ||
3864 | non_stop = was_non_stop; | |
3865 | } | |
3866 | ||
3867 | /* See target/target.h. */ | |
3868 | ||
3869 | void | |
03f4463b | 3870 | target_continue_no_signal (ptid_t ptid) |
f8c1d06b GB |
3871 | { |
3872 | target_resume (ptid, 0, GDB_SIGNAL_0); | |
3873 | } | |
3874 | ||
049a8570 SDJ |
3875 | /* See target/target.h. */ |
3876 | ||
3877 | void | |
3878 | target_continue (ptid_t ptid, enum gdb_signal signal) | |
3879 | { | |
3880 | target_resume (ptid, 0, signal); | |
3881 | } | |
3882 | ||
fdbac7d8 | 3883 | /* Concatenate ELEM to LIST, a comma-separated list. */ |
09826ec5 | 3884 | |
09ce46f2 SM |
3885 | static void |
3886 | str_comma_list_concat_elem (std::string *list, const char *elem) | |
09826ec5 | 3887 | { |
09ce46f2 SM |
3888 | if (!list->empty ()) |
3889 | list->append (", "); | |
3890 | ||
3891 | list->append (elem); | |
09826ec5 PA |
3892 | } |
3893 | ||
3894 | /* Helper for target_options_to_string. If OPT is present in | |
3895 | TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET. | |
09ce46f2 | 3896 | OPT is removed from TARGET_OPTIONS. */ |
09826ec5 | 3897 | |
09ce46f2 | 3898 | static void |
b60cea74 TT |
3899 | do_option (target_wait_flags *target_options, std::string *ret, |
3900 | target_wait_flag opt, const char *opt_str) | |
09826ec5 PA |
3901 | { |
3902 | if ((*target_options & opt) != 0) | |
3903 | { | |
09ce46f2 | 3904 | str_comma_list_concat_elem (ret, opt_str); |
09826ec5 PA |
3905 | *target_options &= ~opt; |
3906 | } | |
09826ec5 PA |
3907 | } |
3908 | ||
fdbac7d8 SM |
3909 | /* See target.h. */ |
3910 | ||
09ce46f2 | 3911 | std::string |
b60cea74 | 3912 | target_options_to_string (target_wait_flags target_options) |
09826ec5 | 3913 | { |
09ce46f2 | 3914 | std::string ret; |
09826ec5 PA |
3915 | |
3916 | #define DO_TARG_OPTION(OPT) \ | |
09ce46f2 | 3917 | do_option (&target_options, &ret, OPT, #OPT) |
09826ec5 PA |
3918 | |
3919 | DO_TARG_OPTION (TARGET_WNOHANG); | |
3920 | ||
3921 | if (target_options != 0) | |
09ce46f2 | 3922 | str_comma_list_concat_elem (&ret, "unknown???"); |
09826ec5 | 3923 | |
09826ec5 PA |
3924 | return ret; |
3925 | } | |
3926 | ||
28439f5e PA |
3927 | void |
3928 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 3929 | { |
328d42d8 | 3930 | current_inferior ()->top_target ()->fetch_registers (regcache, regno); |
ad5989bd | 3931 | if (targetdebug) |
ef79d9a3 | 3932 | regcache->debug_print_register ("target_fetch_registers", regno); |
c906108c SS |
3933 | } |
3934 | ||
28439f5e PA |
3935 | void |
3936 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 3937 | { |
d914c394 SS |
3938 | if (!may_write_registers) |
3939 | error (_("Writing to registers is not allowed (regno %d)"), regno); | |
3940 | ||
328d42d8 | 3941 | current_inferior ()->top_target ()->store_registers (regcache, regno); |
6b84065d | 3942 | if (targetdebug) |
28439f5e | 3943 | { |
ef79d9a3 | 3944 | regcache->debug_print_register ("target_store_registers", regno); |
28439f5e | 3945 | } |
c906108c SS |
3946 | } |
3947 | ||
dc146f7c VP |
3948 | int |
3949 | target_core_of_thread (ptid_t ptid) | |
3950 | { | |
328d42d8 | 3951 | return current_inferior ()->top_target ()->core_of_thread (ptid); |
dc146f7c VP |
3952 | } |
3953 | ||
936d2992 PA |
3954 | int |
3955 | simple_verify_memory (struct target_ops *ops, | |
3956 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
3957 | { | |
3958 | LONGEST total_xfered = 0; | |
3959 | ||
3960 | while (total_xfered < size) | |
3961 | { | |
3962 | ULONGEST xfered_len; | |
3963 | enum target_xfer_status status; | |
3964 | gdb_byte buf[1024]; | |
768adc05 | 3965 | ULONGEST howmuch = std::min<ULONGEST> (sizeof (buf), size - total_xfered); |
936d2992 PA |
3966 | |
3967 | status = target_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
3968 | buf, NULL, lma + total_xfered, howmuch, | |
3969 | &xfered_len); | |
3970 | if (status == TARGET_XFER_OK | |
3971 | && memcmp (data + total_xfered, buf, xfered_len) == 0) | |
3972 | { | |
3973 | total_xfered += xfered_len; | |
3974 | QUIT; | |
3975 | } | |
3976 | else | |
3977 | return 0; | |
3978 | } | |
3979 | return 1; | |
3980 | } | |
3981 | ||
3982 | /* Default implementation of memory verification. */ | |
3983 | ||
3984 | static int | |
3985 | default_verify_memory (struct target_ops *self, | |
3986 | const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3987 | { | |
3988 | /* Start over from the top of the target stack. */ | |
328d42d8 | 3989 | return simple_verify_memory (current_inferior ()->top_target (), |
936d2992 PA |
3990 | data, memaddr, size); |
3991 | } | |
3992 | ||
4a5e7a5b PA |
3993 | int |
3994 | target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3995 | { | |
328d42d8 SM |
3996 | target_ops *target = current_inferior ()->top_target (); |
3997 | ||
3998 | return target->verify_memory (data, memaddr, size); | |
4a5e7a5b PA |
3999 | } |
4000 | ||
9c06b0b4 TJB |
4001 | /* The documentation for this function is in its prototype declaration in |
4002 | target.h. */ | |
4003 | ||
4004 | int | |
f4b0a671 SM |
4005 | target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, |
4006 | enum target_hw_bp_type rw) | |
9c06b0b4 | 4007 | { |
328d42d8 SM |
4008 | target_ops *target = current_inferior ()->top_target (); |
4009 | ||
4010 | return target->insert_mask_watchpoint (addr, mask, rw); | |
9c06b0b4 TJB |
4011 | } |
4012 | ||
4013 | /* The documentation for this function is in its prototype declaration in | |
4014 | target.h. */ | |
4015 | ||
4016 | int | |
f4b0a671 SM |
4017 | target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, |
4018 | enum target_hw_bp_type rw) | |
9c06b0b4 | 4019 | { |
328d42d8 SM |
4020 | target_ops *target = current_inferior ()->top_target (); |
4021 | ||
4022 | return target->remove_mask_watchpoint (addr, mask, rw); | |
9c06b0b4 TJB |
4023 | } |
4024 | ||
4025 | /* The documentation for this function is in its prototype declaration | |
4026 | in target.h. */ | |
4027 | ||
4028 | int | |
4029 | target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask) | |
4030 | { | |
328d42d8 SM |
4031 | target_ops *target = current_inferior ()->top_target (); |
4032 | ||
4033 | return target->masked_watch_num_registers (addr, mask); | |
9c06b0b4 TJB |
4034 | } |
4035 | ||
f1310107 TJB |
4036 | /* The documentation for this function is in its prototype declaration |
4037 | in target.h. */ | |
4038 | ||
4039 | int | |
4040 | target_ranged_break_num_registers (void) | |
4041 | { | |
328d42d8 | 4042 | return current_inferior ()->top_target ()->ranged_break_num_registers (); |
f1310107 TJB |
4043 | } |
4044 | ||
02d27625 MM |
4045 | /* See target.h. */ |
4046 | ||
02d27625 | 4047 | struct btrace_target_info * |
696c0d5e | 4048 | target_enable_btrace (thread_info *tp, const struct btrace_config *conf) |
02d27625 | 4049 | { |
696c0d5e | 4050 | return current_inferior ()->top_target ()->enable_btrace (tp, conf); |
02d27625 MM |
4051 | } |
4052 | ||
4053 | /* See target.h. */ | |
4054 | ||
4055 | void | |
4056 | target_disable_btrace (struct btrace_target_info *btinfo) | |
4057 | { | |
328d42d8 | 4058 | current_inferior ()->top_target ()->disable_btrace (btinfo); |
02d27625 MM |
4059 | } |
4060 | ||
4061 | /* See target.h. */ | |
4062 | ||
4063 | void | |
4064 | target_teardown_btrace (struct btrace_target_info *btinfo) | |
4065 | { | |
328d42d8 | 4066 | current_inferior ()->top_target ()->teardown_btrace (btinfo); |
02d27625 MM |
4067 | } |
4068 | ||
4069 | /* See target.h. */ | |
4070 | ||
969c39fb | 4071 | enum btrace_error |
734b0e4b | 4072 | target_read_btrace (struct btrace_data *btrace, |
969c39fb | 4073 | struct btrace_target_info *btinfo, |
02d27625 MM |
4074 | enum btrace_read_type type) |
4075 | { | |
328d42d8 SM |
4076 | target_ops *target = current_inferior ()->top_target (); |
4077 | ||
4078 | return target->read_btrace (btrace, btinfo, type); | |
02d27625 MM |
4079 | } |
4080 | ||
d02ed0bb MM |
4081 | /* See target.h. */ |
4082 | ||
f4abbc16 MM |
4083 | const struct btrace_config * |
4084 | target_btrace_conf (const struct btrace_target_info *btinfo) | |
4085 | { | |
328d42d8 | 4086 | return current_inferior ()->top_target ()->btrace_conf (btinfo); |
f4abbc16 MM |
4087 | } |
4088 | ||
4089 | /* See target.h. */ | |
4090 | ||
7c1687a9 MM |
4091 | void |
4092 | target_stop_recording (void) | |
4093 | { | |
328d42d8 | 4094 | current_inferior ()->top_target ()->stop_recording (); |
7c1687a9 MM |
4095 | } |
4096 | ||
4097 | /* See target.h. */ | |
4098 | ||
d02ed0bb | 4099 | void |
85e1311a | 4100 | target_save_record (const char *filename) |
d02ed0bb | 4101 | { |
328d42d8 | 4102 | current_inferior ()->top_target ()->save_record (filename); |
d02ed0bb MM |
4103 | } |
4104 | ||
4105 | /* See target.h. */ | |
4106 | ||
4107 | int | |
f6ac5f3d | 4108 | target_supports_delete_record () |
d02ed0bb | 4109 | { |
328d42d8 | 4110 | return current_inferior ()->top_target ()->supports_delete_record (); |
d02ed0bb MM |
4111 | } |
4112 | ||
4113 | /* See target.h. */ | |
4114 | ||
4115 | void | |
4116 | target_delete_record (void) | |
4117 | { | |
328d42d8 | 4118 | current_inferior ()->top_target ()->delete_record (); |
d02ed0bb MM |
4119 | } |
4120 | ||
4121 | /* See target.h. */ | |
4122 | ||
b158a20f TW |
4123 | enum record_method |
4124 | target_record_method (ptid_t ptid) | |
4125 | { | |
328d42d8 | 4126 | return current_inferior ()->top_target ()->record_method (ptid); |
b158a20f TW |
4127 | } |
4128 | ||
4129 | /* See target.h. */ | |
4130 | ||
d02ed0bb | 4131 | int |
a52eab48 | 4132 | target_record_is_replaying (ptid_t ptid) |
d02ed0bb | 4133 | { |
328d42d8 | 4134 | return current_inferior ()->top_target ()->record_is_replaying (ptid); |
d02ed0bb MM |
4135 | } |
4136 | ||
4137 | /* See target.h. */ | |
4138 | ||
7ff27e9b MM |
4139 | int |
4140 | target_record_will_replay (ptid_t ptid, int dir) | |
4141 | { | |
328d42d8 | 4142 | return current_inferior ()->top_target ()->record_will_replay (ptid, dir); |
7ff27e9b MM |
4143 | } |
4144 | ||
4145 | /* See target.h. */ | |
4146 | ||
797094dd MM |
4147 | void |
4148 | target_record_stop_replaying (void) | |
4149 | { | |
328d42d8 | 4150 | current_inferior ()->top_target ()->record_stop_replaying (); |
797094dd MM |
4151 | } |
4152 | ||
4153 | /* See target.h. */ | |
4154 | ||
d02ed0bb MM |
4155 | void |
4156 | target_goto_record_begin (void) | |
4157 | { | |
328d42d8 | 4158 | current_inferior ()->top_target ()->goto_record_begin (); |
d02ed0bb MM |
4159 | } |
4160 | ||
4161 | /* See target.h. */ | |
4162 | ||
4163 | void | |
4164 | target_goto_record_end (void) | |
4165 | { | |
328d42d8 | 4166 | current_inferior ()->top_target ()->goto_record_end (); |
d02ed0bb MM |
4167 | } |
4168 | ||
4169 | /* See target.h. */ | |
4170 | ||
4171 | void | |
4172 | target_goto_record (ULONGEST insn) | |
4173 | { | |
328d42d8 | 4174 | current_inferior ()->top_target ()->goto_record (insn); |
d02ed0bb MM |
4175 | } |
4176 | ||
67c86d06 MM |
4177 | /* See target.h. */ |
4178 | ||
4179 | void | |
9a24775b | 4180 | target_insn_history (int size, gdb_disassembly_flags flags) |
67c86d06 | 4181 | { |
328d42d8 | 4182 | current_inferior ()->top_target ()->insn_history (size, flags); |
67c86d06 MM |
4183 | } |
4184 | ||
4185 | /* See target.h. */ | |
4186 | ||
4187 | void | |
9a24775b PA |
4188 | target_insn_history_from (ULONGEST from, int size, |
4189 | gdb_disassembly_flags flags) | |
67c86d06 | 4190 | { |
328d42d8 | 4191 | current_inferior ()->top_target ()->insn_history_from (from, size, flags); |
67c86d06 MM |
4192 | } |
4193 | ||
4194 | /* See target.h. */ | |
4195 | ||
4196 | void | |
9a24775b PA |
4197 | target_insn_history_range (ULONGEST begin, ULONGEST end, |
4198 | gdb_disassembly_flags flags) | |
67c86d06 | 4199 | { |
328d42d8 | 4200 | current_inferior ()->top_target ()->insn_history_range (begin, end, flags); |
67c86d06 MM |
4201 | } |
4202 | ||
15984c13 MM |
4203 | /* See target.h. */ |
4204 | ||
4205 | void | |
0cb7c7b0 | 4206 | target_call_history (int size, record_print_flags flags) |
15984c13 | 4207 | { |
328d42d8 | 4208 | current_inferior ()->top_target ()->call_history (size, flags); |
15984c13 MM |
4209 | } |
4210 | ||
4211 | /* See target.h. */ | |
4212 | ||
4213 | void | |
0cb7c7b0 | 4214 | target_call_history_from (ULONGEST begin, int size, record_print_flags flags) |
15984c13 | 4215 | { |
328d42d8 | 4216 | current_inferior ()->top_target ()->call_history_from (begin, size, flags); |
15984c13 MM |
4217 | } |
4218 | ||
4219 | /* See target.h. */ | |
4220 | ||
4221 | void | |
0cb7c7b0 | 4222 | target_call_history_range (ULONGEST begin, ULONGEST end, record_print_flags flags) |
15984c13 | 4223 | { |
328d42d8 | 4224 | current_inferior ()->top_target ()->call_history_range (begin, end, flags); |
15984c13 MM |
4225 | } |
4226 | ||
ea001bdc MM |
4227 | /* See target.h. */ |
4228 | ||
4229 | const struct frame_unwind * | |
4230 | target_get_unwinder (void) | |
4231 | { | |
328d42d8 | 4232 | return current_inferior ()->top_target ()->get_unwinder (); |
ea001bdc MM |
4233 | } |
4234 | ||
4235 | /* See target.h. */ | |
4236 | ||
4237 | const struct frame_unwind * | |
4238 | target_get_tailcall_unwinder (void) | |
4239 | { | |
328d42d8 | 4240 | return current_inferior ()->top_target ()->get_tailcall_unwinder (); |
ea001bdc MM |
4241 | } |
4242 | ||
5fff78c4 MM |
4243 | /* See target.h. */ |
4244 | ||
4245 | void | |
4246 | target_prepare_to_generate_core (void) | |
4247 | { | |
328d42d8 | 4248 | current_inferior ()->top_target ()->prepare_to_generate_core (); |
5fff78c4 MM |
4249 | } |
4250 | ||
4251 | /* See target.h. */ | |
4252 | ||
4253 | void | |
4254 | target_done_generating_core (void) | |
4255 | { | |
328d42d8 | 4256 | current_inferior ()->top_target ()->done_generating_core (); |
5fff78c4 MM |
4257 | } |
4258 | ||
c906108c | 4259 | \f |
c5aa993b JM |
4260 | |
4261 | static char targ_desc[] = | |
3e43a32a MS |
4262 | "Names of targets and files being debugged.\nShows the entire \ |
4263 | stack of targets currently in use (including the exec-file,\n\ | |
c906108c SS |
4264 | core-file, and process, if any), as well as the symbol file name."; |
4265 | ||
a53f3625 | 4266 | static void |
a30bf1f1 TT |
4267 | default_rcmd (struct target_ops *self, const char *command, |
4268 | struct ui_file *output) | |
a53f3625 TT |
4269 | { |
4270 | error (_("\"monitor\" command not supported by this target.")); | |
4271 | } | |
4272 | ||
96baa820 | 4273 | static void |
0b39b52e | 4274 | do_monitor_command (const char *cmd, int from_tty) |
96baa820 | 4275 | { |
96baa820 JM |
4276 | target_rcmd (cmd, gdb_stdtarg); |
4277 | } | |
4278 | ||
78cbbba8 LM |
4279 | /* Erases all the memory regions marked as flash. CMD and FROM_TTY are |
4280 | ignored. */ | |
4281 | ||
4282 | void | |
0b39b52e | 4283 | flash_erase_command (const char *cmd, int from_tty) |
78cbbba8 LM |
4284 | { |
4285 | /* Used to communicate termination of flash operations to the target. */ | |
4286 | bool found_flash_region = false; | |
78cbbba8 LM |
4287 | struct gdbarch *gdbarch = target_gdbarch (); |
4288 | ||
a664f67e | 4289 | std::vector<mem_region> mem_regions = target_memory_map (); |
78cbbba8 LM |
4290 | |
4291 | /* Iterate over all memory regions. */ | |
a664f67e | 4292 | for (const mem_region &m : mem_regions) |
78cbbba8 | 4293 | { |
78cbbba8 | 4294 | /* Is this a flash memory region? */ |
a664f67e | 4295 | if (m.attrib.mode == MEM_FLASH) |
dda83cd7 SM |
4296 | { |
4297 | found_flash_region = true; | |
4298 | target_flash_erase (m.lo, m.hi - m.lo); | |
78cbbba8 | 4299 | |
76f9c9cf | 4300 | ui_out_emit_tuple tuple_emitter (current_uiout, "erased-regions"); |
78cbbba8 | 4301 | |
dda83cd7 SM |
4302 | current_uiout->message (_("Erasing flash memory region at address ")); |
4303 | current_uiout->field_core_addr ("address", gdbarch, m.lo); | |
4304 | current_uiout->message (", size = "); | |
4305 | current_uiout->field_string ("size", hex_string (m.hi - m.lo)); | |
4306 | current_uiout->message ("\n"); | |
4307 | } | |
78cbbba8 LM |
4308 | } |
4309 | ||
4310 | /* Did we do any flash operations? If so, we need to finalize them. */ | |
4311 | if (found_flash_region) | |
4312 | target_flash_done (); | |
4313 | else | |
4314 | current_uiout->message (_("No flash memory regions found.\n")); | |
4315 | } | |
4316 | ||
87680a14 JB |
4317 | /* Print the name of each layers of our target stack. */ |
4318 | ||
4319 | static void | |
d3cb6b99 | 4320 | maintenance_print_target_stack (const char *cmd, int from_tty) |
87680a14 | 4321 | { |
6cb06a8c | 4322 | gdb_printf (_("The current target stack is:\n")); |
87680a14 | 4323 | |
328d42d8 SM |
4324 | for (target_ops *t = current_inferior ()->top_target (); |
4325 | t != NULL; | |
4326 | t = t->beneath ()) | |
87680a14 | 4327 | { |
66b4deae | 4328 | if (t->stratum () == debug_stratum) |
f6ac5f3d | 4329 | continue; |
6cb06a8c | 4330 | gdb_printf (" - %s (%s)\n", t->shortname (), t->longname ()); |
87680a14 JB |
4331 | } |
4332 | } | |
4333 | ||
372316f1 PA |
4334 | /* See target.h. */ |
4335 | ||
4336 | void | |
4a570176 | 4337 | target_async (bool enable) |
372316f1 | 4338 | { |
bf94662b AB |
4339 | /* If we are trying to enable async mode then it must be the case that |
4340 | async mode is possible for this target. */ | |
4341 | gdb_assert (!enable || target_can_async_p ()); | |
372316f1 | 4342 | infrun_async (enable); |
328d42d8 | 4343 | current_inferior ()->top_target ()->async (enable); |
372316f1 PA |
4344 | } |
4345 | ||
65706a29 PA |
4346 | /* See target.h. */ |
4347 | ||
4348 | void | |
4349 | target_thread_events (int enable) | |
4350 | { | |
328d42d8 | 4351 | current_inferior ()->top_target ()->thread_events (enable); |
65706a29 PA |
4352 | } |
4353 | ||
329ea579 PA |
4354 | /* Controls if targets can report that they can/are async. This is |
4355 | just for maintainers to use when debugging gdb. */ | |
491144b5 | 4356 | bool target_async_permitted = true; |
c6ebd6cf | 4357 | |
c6ebd6cf | 4358 | static void |
fdf1350d | 4359 | set_maint_target_async (bool permitted) |
c6ebd6cf | 4360 | { |
c35b1492 | 4361 | if (have_live_inferiors ()) |
fdf1350d | 4362 | error (_("Cannot change this setting while the inferior is running.")); |
c6ebd6cf | 4363 | |
fdf1350d SM |
4364 | target_async_permitted = permitted; |
4365 | } | |
4366 | ||
4367 | static bool | |
4368 | get_maint_target_async () | |
4369 | { | |
4370 | return target_async_permitted; | |
c6ebd6cf VP |
4371 | } |
4372 | ||
4373 | static void | |
fdf1350d SM |
4374 | show_maint_target_async (ui_file *file, int from_tty, |
4375 | cmd_list_element *c, const char *value) | |
c6ebd6cf | 4376 | { |
6cb06a8c TT |
4377 | gdb_printf (file, |
4378 | _("Controlling the inferior in " | |
4379 | "asynchronous mode is %s.\n"), value); | |
c6ebd6cf VP |
4380 | } |
4381 | ||
fbea99ea PA |
4382 | /* Return true if the target operates in non-stop mode even with "set |
4383 | non-stop off". */ | |
4384 | ||
4385 | static int | |
4386 | target_always_non_stop_p (void) | |
4387 | { | |
328d42d8 | 4388 | return current_inferior ()->top_target ()->always_non_stop_p (); |
fbea99ea PA |
4389 | } |
4390 | ||
4391 | /* See target.h. */ | |
4392 | ||
6ff267e1 SM |
4393 | bool |
4394 | target_is_non_stop_p () | |
fbea99ea | 4395 | { |
e5b9b39f PA |
4396 | return ((non_stop |
4397 | || target_non_stop_enabled == AUTO_BOOLEAN_TRUE | |
4398 | || (target_non_stop_enabled == AUTO_BOOLEAN_AUTO | |
4399 | && target_always_non_stop_p ())) | |
4400 | && target_can_async_p ()); | |
fbea99ea PA |
4401 | } |
4402 | ||
a0714d30 TBA |
4403 | /* See target.h. */ |
4404 | ||
4405 | bool | |
4406 | exists_non_stop_target () | |
4407 | { | |
4408 | if (target_is_non_stop_p ()) | |
4409 | return true; | |
4410 | ||
4411 | scoped_restore_current_thread restore_thread; | |
4412 | ||
4413 | for (inferior *inf : all_inferiors ()) | |
4414 | { | |
4415 | switch_to_inferior_no_thread (inf); | |
4416 | if (target_is_non_stop_p ()) | |
4417 | return true; | |
4418 | } | |
4419 | ||
4420 | return false; | |
4421 | } | |
4422 | ||
fbea99ea PA |
4423 | /* Controls if targets can report that they always run in non-stop |
4424 | mode. This is just for maintainers to use when debugging gdb. */ | |
4425 | enum auto_boolean target_non_stop_enabled = AUTO_BOOLEAN_AUTO; | |
4426 | ||
fdf1350d | 4427 | /* Set callback for maint target-non-stop setting. */ |
fbea99ea PA |
4428 | |
4429 | static void | |
fdf1350d | 4430 | set_maint_target_non_stop (auto_boolean enabled) |
fbea99ea PA |
4431 | { |
4432 | if (have_live_inferiors ()) | |
fdf1350d | 4433 | error (_("Cannot change this setting while the inferior is running.")); |
fbea99ea | 4434 | |
fdf1350d | 4435 | target_non_stop_enabled = enabled; |
fbea99ea PA |
4436 | } |
4437 | ||
fdf1350d SM |
4438 | /* Get callback for maint target-non-stop setting. */ |
4439 | ||
4440 | static auto_boolean | |
4441 | get_maint_target_non_stop () | |
4442 | { | |
4443 | return target_non_stop_enabled; | |
4444 | } | |
fbea99ea PA |
4445 | |
4446 | static void | |
fdf1350d SM |
4447 | show_maint_target_non_stop (ui_file *file, int from_tty, |
4448 | cmd_list_element *c, const char *value) | |
fbea99ea PA |
4449 | { |
4450 | if (target_non_stop_enabled == AUTO_BOOLEAN_AUTO) | |
6cb06a8c TT |
4451 | gdb_printf (file, |
4452 | _("Whether the target is always in non-stop mode " | |
4453 | "is %s (currently %s).\n"), value, | |
4454 | target_always_non_stop_p () ? "on" : "off"); | |
fbea99ea | 4455 | else |
6cb06a8c TT |
4456 | gdb_printf (file, |
4457 | _("Whether the target is always in non-stop mode " | |
4458 | "is %s.\n"), value); | |
fbea99ea PA |
4459 | } |
4460 | ||
d914c394 SS |
4461 | /* Temporary copies of permission settings. */ |
4462 | ||
491144b5 CB |
4463 | static bool may_write_registers_1 = true; |
4464 | static bool may_write_memory_1 = true; | |
4465 | static bool may_insert_breakpoints_1 = true; | |
4466 | static bool may_insert_tracepoints_1 = true; | |
4467 | static bool may_insert_fast_tracepoints_1 = true; | |
4468 | static bool may_stop_1 = true; | |
d914c394 SS |
4469 | |
4470 | /* Make the user-set values match the real values again. */ | |
4471 | ||
4472 | void | |
4473 | update_target_permissions (void) | |
4474 | { | |
4475 | may_write_registers_1 = may_write_registers; | |
4476 | may_write_memory_1 = may_write_memory; | |
4477 | may_insert_breakpoints_1 = may_insert_breakpoints; | |
4478 | may_insert_tracepoints_1 = may_insert_tracepoints; | |
4479 | may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints; | |
4480 | may_stop_1 = may_stop; | |
4481 | } | |
4482 | ||
4483 | /* The one function handles (most of) the permission flags in the same | |
4484 | way. */ | |
4485 | ||
4486 | static void | |
eb4c3f4a | 4487 | set_target_permissions (const char *args, int from_tty, |
d914c394 SS |
4488 | struct cmd_list_element *c) |
4489 | { | |
55f6301a | 4490 | if (target_has_execution ()) |
d914c394 SS |
4491 | { |
4492 | update_target_permissions (); | |
4493 | error (_("Cannot change this setting while the inferior is running.")); | |
4494 | } | |
4495 | ||
4496 | /* Make the real values match the user-changed values. */ | |
d914c394 SS |
4497 | may_insert_breakpoints = may_insert_breakpoints_1; |
4498 | may_insert_tracepoints = may_insert_tracepoints_1; | |
4499 | may_insert_fast_tracepoints = may_insert_fast_tracepoints_1; | |
4500 | may_stop = may_stop_1; | |
4501 | update_observer_mode (); | |
4502 | } | |
4503 | ||
d8a001f5 | 4504 | /* Set some permissions independently of observer mode. */ |
d914c394 SS |
4505 | |
4506 | static void | |
d8a001f5 TT |
4507 | set_write_memory_registers_permission (const char *args, int from_tty, |
4508 | struct cmd_list_element *c) | |
d914c394 SS |
4509 | { |
4510 | /* Make the real values match the user-changed values. */ | |
4511 | may_write_memory = may_write_memory_1; | |
d8a001f5 | 4512 | may_write_registers = may_write_registers_1; |
d914c394 SS |
4513 | update_observer_mode (); |
4514 | } | |
4515 | ||
6c265988 SM |
4516 | void _initialize_target (); |
4517 | ||
c906108c | 4518 | void |
5b6d1e4f | 4519 | _initialize_target () |
c906108c | 4520 | { |
f6ac5f3d | 4521 | the_debug_target = new debug_target (); |
c906108c | 4522 | |
11db9430 SM |
4523 | add_info ("target", info_target_command, targ_desc); |
4524 | add_info ("files", info_target_command, targ_desc); | |
c906108c | 4525 | |
ccce17b0 | 4526 | add_setshow_zuinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
85c07804 AC |
4527 | Set target debugging."), _("\ |
4528 | Show target debugging."), _("\ | |
333dabeb | 4529 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
3cecbbbe TT |
4530 | verbose."), |
4531 | set_targetdebug, | |
ccce17b0 YQ |
4532 | show_targetdebug, |
4533 | &setdebuglist, &showdebuglist); | |
3a11626d | 4534 | |
2bc416ba | 4535 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
4536 | &trust_readonly, _("\ |
4537 | Set mode for reading from readonly sections."), _("\ | |
4538 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
4539 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
4540 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 4541 | result in significant performance improvement for remote targets."), |
2c5b56ce | 4542 | NULL, |
920d2a44 | 4543 | show_trust_readonly, |
e707bbc2 | 4544 | &setlist, &showlist); |
96baa820 JM |
4545 | |
4546 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 4547 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 4548 | |
87680a14 | 4549 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
dda83cd7 SM |
4550 | _("Print the name of each layer of the internal target stack."), |
4551 | &maintenanceprintlist); | |
87680a14 | 4552 | |
c6ebd6cf | 4553 | add_setshow_boolean_cmd ("target-async", no_class, |
fdf1350d | 4554 | _("\ |
c6ebd6cf VP |
4555 | Set whether gdb controls the inferior in asynchronous mode."), _("\ |
4556 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
4557 | Tells gdb whether to control the inferior in asynchronous mode."), | |
fdf1350d SM |
4558 | set_maint_target_async, |
4559 | get_maint_target_async, | |
4560 | show_maint_target_async, | |
329ea579 PA |
4561 | &maintenance_set_cmdlist, |
4562 | &maintenance_show_cmdlist); | |
c6ebd6cf | 4563 | |
fbea99ea | 4564 | add_setshow_auto_boolean_cmd ("target-non-stop", no_class, |
fdf1350d | 4565 | _("\ |
fbea99ea PA |
4566 | Set whether gdb always controls the inferior in non-stop mode."), _("\ |
4567 | Show whether gdb always controls the inferior in non-stop mode."), _("\ | |
4568 | Tells gdb whether to control the inferior in non-stop mode."), | |
fdf1350d SM |
4569 | set_maint_target_non_stop, |
4570 | get_maint_target_non_stop, | |
4571 | show_maint_target_non_stop, | |
fbea99ea PA |
4572 | &maintenance_set_cmdlist, |
4573 | &maintenance_show_cmdlist); | |
4574 | ||
d914c394 SS |
4575 | add_setshow_boolean_cmd ("may-write-registers", class_support, |
4576 | &may_write_registers_1, _("\ | |
4577 | Set permission to write into registers."), _("\ | |
4578 | Show permission to write into registers."), _("\ | |
4579 | When this permission is on, GDB may write into the target's registers.\n\ | |
4580 | Otherwise, any sort of write attempt will result in an error."), | |
d8a001f5 | 4581 | set_write_memory_registers_permission, NULL, |
d914c394 SS |
4582 | &setlist, &showlist); |
4583 | ||
4584 | add_setshow_boolean_cmd ("may-write-memory", class_support, | |
4585 | &may_write_memory_1, _("\ | |
4586 | Set permission to write into target memory."), _("\ | |
4587 | Show permission to write into target memory."), _("\ | |
4588 | When this permission is on, GDB may write into the target's memory.\n\ | |
4589 | Otherwise, any sort of write attempt will result in an error."), | |
d8a001f5 | 4590 | set_write_memory_registers_permission, NULL, |
d914c394 SS |
4591 | &setlist, &showlist); |
4592 | ||
4593 | add_setshow_boolean_cmd ("may-insert-breakpoints", class_support, | |
4594 | &may_insert_breakpoints_1, _("\ | |
4595 | Set permission to insert breakpoints in the target."), _("\ | |
4596 | Show permission to insert breakpoints in the target."), _("\ | |
4597 | When this permission is on, GDB may insert breakpoints in the program.\n\ | |
4598 | Otherwise, any sort of insertion attempt will result in an error."), | |
4599 | set_target_permissions, NULL, | |
4600 | &setlist, &showlist); | |
4601 | ||
4602 | add_setshow_boolean_cmd ("may-insert-tracepoints", class_support, | |
4603 | &may_insert_tracepoints_1, _("\ | |
4604 | Set permission to insert tracepoints in the target."), _("\ | |
4605 | Show permission to insert tracepoints in the target."), _("\ | |
4606 | When this permission is on, GDB may insert tracepoints in the program.\n\ | |
4607 | Otherwise, any sort of insertion attempt will result in an error."), | |
4608 | set_target_permissions, NULL, | |
4609 | &setlist, &showlist); | |
4610 | ||
4611 | add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support, | |
4612 | &may_insert_fast_tracepoints_1, _("\ | |
4613 | Set permission to insert fast tracepoints in the target."), _("\ | |
4614 | Show permission to insert fast tracepoints in the target."), _("\ | |
4615 | When this permission is on, GDB may insert fast tracepoints.\n\ | |
4616 | Otherwise, any sort of insertion attempt will result in an error."), | |
4617 | set_target_permissions, NULL, | |
4618 | &setlist, &showlist); | |
4619 | ||
4620 | add_setshow_boolean_cmd ("may-interrupt", class_support, | |
4621 | &may_stop_1, _("\ | |
4622 | Set permission to interrupt or signal the target."), _("\ | |
4623 | Show permission to interrupt or signal the target."), _("\ | |
4624 | When this permission is on, GDB may interrupt/stop the target's execution.\n\ | |
4625 | Otherwise, any attempt to interrupt or stop will be ignored."), | |
4626 | set_target_permissions, NULL, | |
4627 | &setlist, &showlist); | |
6a3cb8e8 | 4628 | |
78cbbba8 | 4629 | add_com ("flash-erase", no_class, flash_erase_command, |
dda83cd7 | 4630 | _("Erase all flash memory regions.")); |
78cbbba8 | 4631 | |
6a3cb8e8 PA |
4632 | add_setshow_boolean_cmd ("auto-connect-native-target", class_support, |
4633 | &auto_connect_native_target, _("\ | |
4634 | Set whether GDB may automatically connect to the native target."), _("\ | |
4635 | Show whether GDB may automatically connect to the native target."), _("\ | |
4636 | When on, and GDB is not connected to a target yet, GDB\n\ | |
4637 | attempts \"run\" and other commands with the native target."), | |
4638 | NULL, show_auto_connect_native_target, | |
4639 | &setlist, &showlist); | |
c906108c | 4640 | } |