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c906108c | 1 | /* Select target systems and architectures at runtime for GDB. |
7998dfc3 | 2 | |
1d506c26 | 3 | Copyright (C) 1990-2024 Free Software Foundation, Inc. |
7998dfc3 | 4 | |
c906108c SS |
5 | Contributed by Cygnus Support. |
6 | ||
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 21 | |
c906108c | 22 | #include "target.h" |
ec452525 | 23 | #include "extract-store-integer.h" |
68c765e2 | 24 | #include "target-dcache.h" |
5b9707eb | 25 | #include "cli/cli-cmds.h" |
c906108c SS |
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" |
5260dcf0 | 57 | #include "cli/cli-style.h" |
c906108c | 58 | |
f0f9ff95 TT |
59 | static void generic_tls_error (void) ATTRIBUTE_NORETURN; |
60 | ||
a30bf1f1 | 61 | static void default_rcmd (struct target_ops *, const char *, struct ui_file *); |
a53f3625 | 62 | |
936d2992 PA |
63 | static int default_verify_memory (struct target_ops *self, |
64 | const gdb_byte *data, | |
65 | CORE_ADDR memaddr, ULONGEST size); | |
66 | ||
c25c4a8b | 67 | static void tcomplain (void) ATTRIBUTE_NORETURN; |
c906108c | 68 | |
d9f719f1 PA |
69 | /* Mapping between target_info objects (which have address identity) |
70 | and corresponding open/factory function/callback. Each add_target | |
71 | call adds one entry to this map, and registers a "target | |
72 | TARGET_NAME" command that when invoked calls the factory registered | |
73 | here. The target_info object is associated with the command via | |
74 | the command's context. */ | |
75 | static std::unordered_map<const target_info *, target_open_ftype *> | |
76 | target_factories; | |
c906108c | 77 | |
06b5b831 | 78 | /* The singleton debug target. */ |
c906108c | 79 | |
f6ac5f3d | 80 | static struct target_ops *the_debug_target; |
c906108c | 81 | |
c906108c SS |
82 | /* Command list for target. */ |
83 | ||
84 | static struct cmd_list_element *targetlist = NULL; | |
85 | ||
358be6e7 | 86 | /* See target.h. */ |
cf7a04e8 | 87 | |
358be6e7 | 88 | bool trust_readonly = false; |
cf7a04e8 | 89 | |
8defab1a DJ |
90 | /* Nonzero if we should show true memory content including |
91 | memory breakpoint inserted by gdb. */ | |
92 | ||
93 | static int show_memory_breakpoints = 0; | |
94 | ||
d914c394 SS |
95 | /* These globals control whether GDB attempts to perform these |
96 | operations; they are useful for targets that need to prevent | |
30baf67b | 97 | inadvertent disruption, such as in non-stop mode. */ |
d914c394 | 98 | |
491144b5 | 99 | bool may_write_registers = true; |
d914c394 | 100 | |
491144b5 | 101 | bool may_write_memory = true; |
d914c394 | 102 | |
491144b5 | 103 | bool may_insert_breakpoints = true; |
d914c394 | 104 | |
491144b5 | 105 | bool may_insert_tracepoints = true; |
d914c394 | 106 | |
491144b5 | 107 | bool may_insert_fast_tracepoints = true; |
d914c394 | 108 | |
491144b5 | 109 | bool may_stop = true; |
d914c394 | 110 | |
c906108c SS |
111 | /* Non-zero if we want to see trace of target level stuff. */ |
112 | ||
ccce17b0 | 113 | static unsigned int targetdebug = 0; |
3cecbbbe | 114 | |
cb5dfff8 SM |
115 | /* Print a "target" debug statement with the function name prefix. */ |
116 | ||
117 | #define target_debug_printf(fmt, ...) \ | |
118 | debug_prefixed_printf_cond (targetdebug > 0, "target", fmt, ##__VA_ARGS__) | |
119 | ||
120 | /* Print a "target" debug statement without the function name prefix. */ | |
121 | ||
122 | #define target_debug_printf_nofunc(fmt, ...) \ | |
123 | debug_prefixed_printf_cond_nofunc (targetdebug > 0, "target", fmt, ##__VA_ARGS__) | |
124 | ||
3cecbbbe | 125 | static void |
eb4c3f4a | 126 | set_targetdebug (const char *args, int from_tty, struct cmd_list_element *c) |
3cecbbbe | 127 | { |
f6ac5f3d | 128 | if (targetdebug) |
02980c56 | 129 | current_inferior ()->push_target (the_debug_target); |
f6ac5f3d | 130 | else |
fadf6add | 131 | current_inferior ()->unpush_target (the_debug_target); |
3cecbbbe TT |
132 | } |
133 | ||
920d2a44 AC |
134 | static void |
135 | show_targetdebug (struct ui_file *file, int from_tty, | |
136 | struct cmd_list_element *c, const char *value) | |
137 | { | |
6cb06a8c | 138 | gdb_printf (file, _("Target debugging is %s.\n"), value); |
920d2a44 | 139 | } |
c906108c | 140 | |
c35b1492 | 141 | int |
a739972c | 142 | target_has_memory () |
c35b1492 | 143 | { |
328d42d8 SM |
144 | for (target_ops *t = current_inferior ()->top_target (); |
145 | t != NULL; | |
146 | t = t->beneath ()) | |
f6ac5f3d | 147 | if (t->has_memory ()) |
c35b1492 PA |
148 | return 1; |
149 | ||
150 | return 0; | |
151 | } | |
152 | ||
153 | int | |
841de120 | 154 | target_has_stack () |
c35b1492 | 155 | { |
328d42d8 SM |
156 | for (target_ops *t = current_inferior ()->top_target (); |
157 | t != NULL; | |
158 | t = t->beneath ()) | |
f6ac5f3d | 159 | if (t->has_stack ()) |
c35b1492 PA |
160 | return 1; |
161 | ||
162 | return 0; | |
163 | } | |
164 | ||
165 | int | |
9dccd06e | 166 | target_has_registers () |
c35b1492 | 167 | { |
328d42d8 SM |
168 | for (target_ops *t = current_inferior ()->top_target (); |
169 | t != NULL; | |
170 | t = t->beneath ()) | |
f6ac5f3d | 171 | if (t->has_registers ()) |
c35b1492 PA |
172 | return 1; |
173 | ||
174 | return 0; | |
175 | } | |
176 | ||
5018ce90 | 177 | bool |
55f6301a | 178 | target_has_execution (inferior *inf) |
c35b1492 | 179 | { |
55f6301a TT |
180 | if (inf == nullptr) |
181 | inf = current_inferior (); | |
182 | ||
5b6d1e4f PA |
183 | for (target_ops *t = inf->top_target (); |
184 | t != nullptr; | |
185 | t = inf->find_target_beneath (t)) | |
5018ce90 PA |
186 | if (t->has_execution (inf)) |
187 | return true; | |
c35b1492 | 188 | |
5018ce90 | 189 | return false; |
c35b1492 PA |
190 | } |
191 | ||
d777bf0d SM |
192 | const char * |
193 | target_shortname () | |
194 | { | |
328d42d8 | 195 | return current_inferior ()->top_target ()->shortname (); |
d777bf0d SM |
196 | } |
197 | ||
198 | /* See target.h. */ | |
199 | ||
200 | bool | |
201 | target_attach_no_wait () | |
202 | { | |
328d42d8 | 203 | return current_inferior ()->top_target ()->attach_no_wait (); |
d777bf0d SM |
204 | } |
205 | ||
206 | /* See target.h. */ | |
207 | ||
208 | void | |
209 | target_post_attach (int pid) | |
210 | { | |
328d42d8 | 211 | return current_inferior ()->top_target ()->post_attach (pid); |
d777bf0d SM |
212 | } |
213 | ||
214 | /* See target.h. */ | |
215 | ||
216 | void | |
217 | target_prepare_to_store (regcache *regcache) | |
218 | { | |
328d42d8 | 219 | return current_inferior ()->top_target ()->prepare_to_store (regcache); |
d777bf0d SM |
220 | } |
221 | ||
222 | /* See target.h. */ | |
223 | ||
224 | bool | |
225 | target_supports_enable_disable_tracepoint () | |
226 | { | |
328d42d8 SM |
227 | target_ops *target = current_inferior ()->top_target (); |
228 | ||
229 | return target->supports_enable_disable_tracepoint (); | |
d777bf0d SM |
230 | } |
231 | ||
232 | bool | |
233 | target_supports_string_tracing () | |
234 | { | |
328d42d8 | 235 | return current_inferior ()->top_target ()->supports_string_tracing (); |
d777bf0d SM |
236 | } |
237 | ||
238 | /* See target.h. */ | |
239 | ||
240 | bool | |
241 | target_supports_evaluation_of_breakpoint_conditions () | |
242 | { | |
328d42d8 SM |
243 | target_ops *target = current_inferior ()->top_target (); |
244 | ||
245 | return target->supports_evaluation_of_breakpoint_conditions (); | |
d777bf0d SM |
246 | } |
247 | ||
248 | /* See target.h. */ | |
249 | ||
250 | bool | |
251 | target_supports_dumpcore () | |
252 | { | |
328d42d8 | 253 | return current_inferior ()->top_target ()->supports_dumpcore (); |
d777bf0d SM |
254 | } |
255 | ||
256 | /* See target.h. */ | |
257 | ||
258 | void | |
259 | target_dumpcore (const char *filename) | |
260 | { | |
328d42d8 | 261 | return current_inferior ()->top_target ()->dumpcore (filename); |
d777bf0d SM |
262 | } |
263 | ||
264 | /* See target.h. */ | |
265 | ||
266 | bool | |
267 | target_can_run_breakpoint_commands () | |
268 | { | |
328d42d8 | 269 | return current_inferior ()->top_target ()->can_run_breakpoint_commands (); |
d777bf0d SM |
270 | } |
271 | ||
272 | /* See target.h. */ | |
273 | ||
274 | void | |
275 | target_files_info () | |
276 | { | |
328d42d8 | 277 | return current_inferior ()->top_target ()->files_info (); |
d777bf0d SM |
278 | } |
279 | ||
280 | /* See target.h. */ | |
d777bf0d SM |
281 | |
282 | int | |
283 | target_insert_fork_catchpoint (int pid) | |
284 | { | |
328d42d8 | 285 | return current_inferior ()->top_target ()->insert_fork_catchpoint (pid); |
d777bf0d SM |
286 | } |
287 | ||
288 | /* See target.h. */ | |
289 | ||
290 | int | |
291 | target_remove_fork_catchpoint (int pid) | |
292 | { | |
328d42d8 | 293 | return current_inferior ()->top_target ()->remove_fork_catchpoint (pid); |
d777bf0d SM |
294 | } |
295 | ||
296 | /* See target.h. */ | |
297 | ||
298 | int | |
299 | target_insert_vfork_catchpoint (int pid) | |
300 | { | |
328d42d8 | 301 | return current_inferior ()->top_target ()->insert_vfork_catchpoint (pid); |
d777bf0d SM |
302 | } |
303 | ||
304 | /* See target.h. */ | |
305 | ||
306 | int | |
307 | target_remove_vfork_catchpoint (int pid) | |
308 | { | |
328d42d8 | 309 | return current_inferior ()->top_target ()->remove_vfork_catchpoint (pid); |
d777bf0d SM |
310 | } |
311 | ||
312 | /* See target.h. */ | |
313 | ||
314 | int | |
315 | target_insert_exec_catchpoint (int pid) | |
316 | { | |
328d42d8 | 317 | return current_inferior ()->top_target ()->insert_exec_catchpoint (pid); |
d777bf0d SM |
318 | } |
319 | ||
320 | /* See target.h. */ | |
321 | ||
322 | int | |
323 | target_remove_exec_catchpoint (int pid) | |
324 | { | |
328d42d8 | 325 | return current_inferior ()->top_target ()->remove_exec_catchpoint (pid); |
d777bf0d SM |
326 | } |
327 | ||
328 | /* See target.h. */ | |
329 | ||
330 | int | |
331 | target_set_syscall_catchpoint (int pid, bool needed, int any_count, | |
332 | gdb::array_view<const int> syscall_counts) | |
333 | { | |
328d42d8 SM |
334 | target_ops *target = current_inferior ()->top_target (); |
335 | ||
336 | return target->set_syscall_catchpoint (pid, needed, any_count, | |
337 | syscall_counts); | |
d777bf0d SM |
338 | } |
339 | ||
340 | /* See target.h. */ | |
341 | ||
342 | void | |
343 | target_rcmd (const char *command, struct ui_file *outbuf) | |
344 | { | |
328d42d8 | 345 | return current_inferior ()->top_target ()->rcmd (command, outbuf); |
d777bf0d SM |
346 | } |
347 | ||
348 | /* See target.h. */ | |
349 | ||
350 | bool | |
351 | target_can_lock_scheduler () | |
352 | { | |
328d42d8 SM |
353 | target_ops *target = current_inferior ()->top_target (); |
354 | ||
355 | return (target->get_thread_control_capabilities ()& tc_schedlock) != 0; | |
d777bf0d SM |
356 | } |
357 | ||
358 | /* See target.h. */ | |
359 | ||
360 | bool | |
361 | target_can_async_p () | |
362 | { | |
0c1e6e26 AB |
363 | return target_can_async_p (current_inferior ()->top_target ()); |
364 | } | |
365 | ||
366 | /* See target.h. */ | |
367 | ||
368 | bool | |
369 | target_can_async_p (struct target_ops *target) | |
370 | { | |
fce6cd34 AB |
371 | if (!target_async_permitted) |
372 | return false; | |
0c1e6e26 | 373 | return target->can_async_p (); |
d777bf0d SM |
374 | } |
375 | ||
376 | /* See target.h. */ | |
377 | ||
378 | bool | |
379 | target_is_async_p () | |
380 | { | |
bf94662b AB |
381 | bool result = current_inferior ()->top_target ()->is_async_p (); |
382 | gdb_assert (target_async_permitted || !result); | |
383 | return result; | |
d777bf0d SM |
384 | } |
385 | ||
386 | exec_direction_kind | |
387 | target_execution_direction () | |
388 | { | |
328d42d8 | 389 | return current_inferior ()->top_target ()->execution_direction (); |
d777bf0d SM |
390 | } |
391 | ||
392 | /* See target.h. */ | |
393 | ||
394 | const char * | |
395 | target_extra_thread_info (thread_info *tp) | |
396 | { | |
328d42d8 | 397 | return current_inferior ()->top_target ()->extra_thread_info (tp); |
d777bf0d SM |
398 | } |
399 | ||
400 | /* See target.h. */ | |
401 | ||
0e90c441 | 402 | const char * |
d777bf0d SM |
403 | target_pid_to_exec_file (int pid) |
404 | { | |
328d42d8 | 405 | return current_inferior ()->top_target ()->pid_to_exec_file (pid); |
d777bf0d SM |
406 | } |
407 | ||
408 | /* See target.h. */ | |
409 | ||
410 | gdbarch * | |
411 | target_thread_architecture (ptid_t ptid) | |
412 | { | |
328d42d8 | 413 | return current_inferior ()->top_target ()->thread_architecture (ptid); |
d777bf0d SM |
414 | } |
415 | ||
416 | /* See target.h. */ | |
417 | ||
418 | int | |
419 | target_find_memory_regions (find_memory_region_ftype func, void *data) | |
420 | { | |
328d42d8 | 421 | return current_inferior ()->top_target ()->find_memory_regions (func, data); |
d777bf0d SM |
422 | } |
423 | ||
424 | /* See target.h. */ | |
425 | ||
426 | gdb::unique_xmalloc_ptr<char> | |
427 | target_make_corefile_notes (bfd *bfd, int *size_p) | |
428 | { | |
328d42d8 | 429 | return current_inferior ()->top_target ()->make_corefile_notes (bfd, size_p); |
d777bf0d SM |
430 | } |
431 | ||
432 | gdb_byte * | |
433 | target_get_bookmark (const char *args, int from_tty) | |
434 | { | |
328d42d8 | 435 | return current_inferior ()->top_target ()->get_bookmark (args, from_tty); |
d777bf0d SM |
436 | } |
437 | ||
438 | void | |
439 | target_goto_bookmark (const gdb_byte *arg, int from_tty) | |
440 | { | |
328d42d8 | 441 | return current_inferior ()->top_target ()->goto_bookmark (arg, from_tty); |
d777bf0d SM |
442 | } |
443 | ||
444 | /* See target.h. */ | |
445 | ||
446 | bool | |
447 | target_stopped_by_watchpoint () | |
448 | { | |
328d42d8 | 449 | return current_inferior ()->top_target ()->stopped_by_watchpoint (); |
d777bf0d SM |
450 | } |
451 | ||
452 | /* See target.h. */ | |
453 | ||
454 | bool | |
455 | target_stopped_by_sw_breakpoint () | |
456 | { | |
328d42d8 | 457 | return current_inferior ()->top_target ()->stopped_by_sw_breakpoint (); |
d777bf0d SM |
458 | } |
459 | ||
460 | bool | |
461 | target_supports_stopped_by_sw_breakpoint () | |
462 | { | |
328d42d8 SM |
463 | target_ops *target = current_inferior ()->top_target (); |
464 | ||
465 | return target->supports_stopped_by_sw_breakpoint (); | |
d777bf0d SM |
466 | } |
467 | ||
468 | bool | |
469 | target_stopped_by_hw_breakpoint () | |
470 | { | |
328d42d8 | 471 | return current_inferior ()->top_target ()->stopped_by_hw_breakpoint (); |
d777bf0d SM |
472 | } |
473 | ||
474 | bool | |
475 | target_supports_stopped_by_hw_breakpoint () | |
476 | { | |
328d42d8 SM |
477 | target_ops *target = current_inferior ()->top_target (); |
478 | ||
479 | return target->supports_stopped_by_hw_breakpoint (); | |
d777bf0d SM |
480 | } |
481 | ||
482 | /* See target.h. */ | |
483 | ||
484 | bool | |
485 | target_have_steppable_watchpoint () | |
486 | { | |
328d42d8 | 487 | return current_inferior ()->top_target ()->have_steppable_watchpoint (); |
d777bf0d SM |
488 | } |
489 | ||
490 | /* See target.h. */ | |
491 | ||
492 | int | |
493 | target_can_use_hardware_watchpoint (bptype type, int cnt, int othertype) | |
494 | { | |
328d42d8 SM |
495 | target_ops *target = current_inferior ()->top_target (); |
496 | ||
497 | return target->can_use_hw_breakpoint (type, cnt, othertype); | |
d777bf0d SM |
498 | } |
499 | ||
500 | /* See target.h. */ | |
501 | ||
502 | int | |
503 | target_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
504 | { | |
328d42d8 SM |
505 | target_ops *target = current_inferior ()->top_target (); |
506 | ||
507 | return target->region_ok_for_hw_watchpoint (addr, len); | |
d777bf0d SM |
508 | } |
509 | ||
510 | ||
511 | int | |
512 | target_can_do_single_step () | |
513 | { | |
328d42d8 | 514 | return current_inferior ()->top_target ()->can_do_single_step (); |
d777bf0d SM |
515 | } |
516 | ||
517 | /* See target.h. */ | |
518 | ||
519 | int | |
520 | target_insert_watchpoint (CORE_ADDR addr, int len, target_hw_bp_type type, | |
521 | expression *cond) | |
522 | { | |
328d42d8 SM |
523 | target_ops *target = current_inferior ()->top_target (); |
524 | ||
525 | return target->insert_watchpoint (addr, len, type, cond); | |
d777bf0d SM |
526 | } |
527 | ||
528 | /* See target.h. */ | |
529 | ||
530 | int | |
531 | target_remove_watchpoint (CORE_ADDR addr, int len, target_hw_bp_type type, | |
532 | expression *cond) | |
533 | { | |
328d42d8 SM |
534 | target_ops *target = current_inferior ()->top_target (); |
535 | ||
536 | return target->remove_watchpoint (addr, len, type, cond); | |
d777bf0d SM |
537 | } |
538 | ||
539 | /* See target.h. */ | |
540 | ||
541 | int | |
542 | target_insert_hw_breakpoint (gdbarch *gdbarch, bp_target_info *bp_tgt) | |
543 | { | |
328d42d8 SM |
544 | target_ops *target = current_inferior ()->top_target (); |
545 | ||
546 | return target->insert_hw_breakpoint (gdbarch, bp_tgt); | |
d777bf0d SM |
547 | } |
548 | ||
549 | /* See target.h. */ | |
550 | ||
551 | int | |
552 | target_remove_hw_breakpoint (gdbarch *gdbarch, bp_target_info *bp_tgt) | |
553 | { | |
328d42d8 SM |
554 | target_ops *target = current_inferior ()->top_target (); |
555 | ||
556 | return target->remove_hw_breakpoint (gdbarch, bp_tgt); | |
d777bf0d SM |
557 | } |
558 | ||
559 | /* See target.h. */ | |
560 | ||
561 | bool | |
562 | target_can_accel_watchpoint_condition (CORE_ADDR addr, int len, int type, | |
563 | expression *cond) | |
564 | { | |
328d42d8 SM |
565 | target_ops *target = current_inferior ()->top_target (); |
566 | ||
567 | return target->can_accel_watchpoint_condition (addr, len, type, cond); | |
d777bf0d SM |
568 | } |
569 | ||
570 | /* See target.h. */ | |
571 | ||
572 | bool | |
573 | target_can_execute_reverse () | |
574 | { | |
328d42d8 | 575 | return current_inferior ()->top_target ()->can_execute_reverse (); |
d777bf0d SM |
576 | } |
577 | ||
578 | ptid_t | |
c80e29db | 579 | target_get_ada_task_ptid (long lwp, ULONGEST tid) |
d777bf0d | 580 | { |
328d42d8 | 581 | return current_inferior ()->top_target ()->get_ada_task_ptid (lwp, tid); |
d777bf0d SM |
582 | } |
583 | ||
584 | bool | |
585 | target_filesystem_is_local () | |
586 | { | |
328d42d8 | 587 | return current_inferior ()->top_target ()->filesystem_is_local (); |
d777bf0d SM |
588 | } |
589 | ||
590 | void | |
591 | target_trace_init () | |
592 | { | |
328d42d8 | 593 | return current_inferior ()->top_target ()->trace_init (); |
d777bf0d SM |
594 | } |
595 | ||
596 | void | |
597 | target_download_tracepoint (bp_location *location) | |
598 | { | |
328d42d8 | 599 | return current_inferior ()->top_target ()->download_tracepoint (location); |
d777bf0d SM |
600 | } |
601 | ||
602 | bool | |
603 | target_can_download_tracepoint () | |
604 | { | |
328d42d8 | 605 | return current_inferior ()->top_target ()->can_download_tracepoint (); |
d777bf0d SM |
606 | } |
607 | ||
608 | void | |
609 | target_download_trace_state_variable (const trace_state_variable &tsv) | |
610 | { | |
328d42d8 SM |
611 | target_ops *target = current_inferior ()->top_target (); |
612 | ||
613 | return target->download_trace_state_variable (tsv); | |
d777bf0d SM |
614 | } |
615 | ||
616 | void | |
617 | target_enable_tracepoint (bp_location *loc) | |
618 | { | |
328d42d8 | 619 | return current_inferior ()->top_target ()->enable_tracepoint (loc); |
d777bf0d SM |
620 | } |
621 | ||
622 | void | |
623 | target_disable_tracepoint (bp_location *loc) | |
624 | { | |
328d42d8 | 625 | return current_inferior ()->top_target ()->disable_tracepoint (loc); |
d777bf0d SM |
626 | } |
627 | ||
628 | void | |
629 | target_trace_start () | |
630 | { | |
328d42d8 | 631 | return current_inferior ()->top_target ()->trace_start (); |
d777bf0d SM |
632 | } |
633 | ||
634 | void | |
635 | target_trace_set_readonly_regions () | |
636 | { | |
328d42d8 | 637 | return current_inferior ()->top_target ()->trace_set_readonly_regions (); |
d777bf0d SM |
638 | } |
639 | ||
640 | int | |
641 | target_get_trace_status (trace_status *ts) | |
642 | { | |
328d42d8 | 643 | return current_inferior ()->top_target ()->get_trace_status (ts); |
d777bf0d SM |
644 | } |
645 | ||
646 | void | |
01bccc56 | 647 | target_get_tracepoint_status (tracepoint *tp, uploaded_tp *utp) |
d777bf0d | 648 | { |
328d42d8 | 649 | return current_inferior ()->top_target ()->get_tracepoint_status (tp, utp); |
d777bf0d SM |
650 | } |
651 | ||
652 | void | |
653 | target_trace_stop () | |
654 | { | |
328d42d8 | 655 | return current_inferior ()->top_target ()->trace_stop (); |
d777bf0d SM |
656 | } |
657 | ||
658 | int | |
659 | target_trace_find (trace_find_type type, int num, | |
660 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) | |
661 | { | |
328d42d8 SM |
662 | target_ops *target = current_inferior ()->top_target (); |
663 | ||
664 | return target->trace_find (type, num, addr1, addr2, tpp); | |
d777bf0d SM |
665 | } |
666 | ||
667 | bool | |
668 | target_get_trace_state_variable_value (int tsv, LONGEST *val) | |
669 | { | |
328d42d8 SM |
670 | target_ops *target = current_inferior ()->top_target (); |
671 | ||
672 | return target->get_trace_state_variable_value (tsv, val); | |
d777bf0d SM |
673 | } |
674 | ||
675 | int | |
676 | target_save_trace_data (const char *filename) | |
677 | { | |
328d42d8 | 678 | return current_inferior ()->top_target ()->save_trace_data (filename); |
d777bf0d SM |
679 | } |
680 | ||
681 | int | |
682 | target_upload_tracepoints (uploaded_tp **utpp) | |
683 | { | |
328d42d8 | 684 | return current_inferior ()->top_target ()->upload_tracepoints (utpp); |
d777bf0d SM |
685 | } |
686 | ||
687 | int | |
688 | target_upload_trace_state_variables (uploaded_tsv **utsvp) | |
689 | { | |
328d42d8 SM |
690 | target_ops *target = current_inferior ()->top_target (); |
691 | ||
692 | return target->upload_trace_state_variables (utsvp); | |
d777bf0d SM |
693 | } |
694 | ||
695 | LONGEST | |
696 | target_get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
697 | { | |
328d42d8 SM |
698 | target_ops *target = current_inferior ()->top_target (); |
699 | ||
700 | return target->get_raw_trace_data (buf, offset, len); | |
d777bf0d SM |
701 | } |
702 | ||
703 | int | |
704 | target_get_min_fast_tracepoint_insn_len () | |
705 | { | |
328d42d8 SM |
706 | target_ops *target = current_inferior ()->top_target (); |
707 | ||
708 | return target->get_min_fast_tracepoint_insn_len (); | |
d777bf0d SM |
709 | } |
710 | ||
711 | void | |
712 | target_set_disconnected_tracing (int val) | |
713 | { | |
328d42d8 | 714 | return current_inferior ()->top_target ()->set_disconnected_tracing (val); |
d777bf0d SM |
715 | } |
716 | ||
717 | void | |
718 | target_set_circular_trace_buffer (int val) | |
719 | { | |
328d42d8 | 720 | return current_inferior ()->top_target ()->set_circular_trace_buffer (val); |
d777bf0d SM |
721 | } |
722 | ||
723 | void | |
724 | target_set_trace_buffer_size (LONGEST val) | |
725 | { | |
328d42d8 | 726 | return current_inferior ()->top_target ()->set_trace_buffer_size (val); |
d777bf0d SM |
727 | } |
728 | ||
729 | bool | |
730 | target_set_trace_notes (const char *user, const char *notes, | |
731 | const char *stopnotes) | |
732 | { | |
328d42d8 SM |
733 | target_ops *target = current_inferior ()->top_target (); |
734 | ||
735 | return target->set_trace_notes (user, notes, stopnotes); | |
d777bf0d SM |
736 | } |
737 | ||
738 | bool | |
739 | target_get_tib_address (ptid_t ptid, CORE_ADDR *addr) | |
740 | { | |
328d42d8 | 741 | return current_inferior ()->top_target ()->get_tib_address (ptid, addr); |
d777bf0d SM |
742 | } |
743 | ||
744 | void | |
745 | target_set_permissions () | |
746 | { | |
328d42d8 | 747 | return current_inferior ()->top_target ()->set_permissions (); |
d777bf0d SM |
748 | } |
749 | ||
750 | bool | |
751 | target_static_tracepoint_marker_at (CORE_ADDR addr, | |
752 | static_tracepoint_marker *marker) | |
753 | { | |
328d42d8 SM |
754 | target_ops *target = current_inferior ()->top_target (); |
755 | ||
756 | return target->static_tracepoint_marker_at (addr, marker); | |
d777bf0d SM |
757 | } |
758 | ||
759 | std::vector<static_tracepoint_marker> | |
760 | target_static_tracepoint_markers_by_strid (const char *marker_id) | |
761 | { | |
328d42d8 SM |
762 | target_ops *target = current_inferior ()->top_target (); |
763 | ||
764 | return target->static_tracepoint_markers_by_strid (marker_id); | |
d777bf0d SM |
765 | } |
766 | ||
767 | traceframe_info_up | |
768 | target_traceframe_info () | |
769 | { | |
328d42d8 | 770 | return current_inferior ()->top_target ()->traceframe_info (); |
d777bf0d SM |
771 | } |
772 | ||
773 | bool | |
774 | target_use_agent (bool use) | |
775 | { | |
328d42d8 | 776 | return current_inferior ()->top_target ()->use_agent (use); |
d777bf0d SM |
777 | } |
778 | ||
779 | bool | |
780 | target_can_use_agent () | |
781 | { | |
328d42d8 | 782 | return current_inferior ()->top_target ()->can_use_agent (); |
d777bf0d SM |
783 | } |
784 | ||
785 | bool | |
786 | target_augmented_libraries_svr4_read () | |
787 | { | |
328d42d8 | 788 | return current_inferior ()->top_target ()->augmented_libraries_svr4_read (); |
d777bf0d SM |
789 | } |
790 | ||
791 | bool | |
792 | target_supports_memory_tagging () | |
793 | { | |
328d42d8 | 794 | return current_inferior ()->top_target ()->supports_memory_tagging (); |
d777bf0d SM |
795 | } |
796 | ||
797 | bool | |
798 | target_fetch_memtags (CORE_ADDR address, size_t len, gdb::byte_vector &tags, | |
799 | int type) | |
800 | { | |
328d42d8 | 801 | return current_inferior ()->top_target ()->fetch_memtags (address, len, tags, type); |
d777bf0d SM |
802 | } |
803 | ||
804 | bool | |
805 | target_store_memtags (CORE_ADDR address, size_t len, | |
806 | const gdb::byte_vector &tags, int type) | |
807 | { | |
328d42d8 | 808 | return current_inferior ()->top_target ()->store_memtags (address, len, tags, type); |
d777bf0d SM |
809 | } |
810 | ||
7202f41f GR |
811 | bool |
812 | target_is_address_tagged (gdbarch *gdbarch, CORE_ADDR address) | |
813 | { | |
814 | return current_inferior ()->top_target ()->is_address_tagged (gdbarch, address); | |
815 | } | |
816 | ||
a388ab0b JB |
817 | x86_xsave_layout |
818 | target_fetch_x86_xsave_layout () | |
819 | { | |
820 | return current_inferior ()->top_target ()->fetch_x86_xsave_layout (); | |
821 | } | |
822 | ||
d777bf0d SM |
823 | void |
824 | target_log_command (const char *p) | |
825 | { | |
328d42d8 | 826 | return current_inferior ()->top_target ()->log_command (p); |
d777bf0d SM |
827 | } |
828 | ||
8981c758 TT |
829 | /* This is used to implement the various target commands. */ |
830 | ||
831 | static void | |
eb4c3f4a | 832 | open_target (const char *args, int from_tty, struct cmd_list_element *command) |
8981c758 | 833 | { |
0f8e2034 | 834 | auto *ti = static_cast<target_info *> (command->context ()); |
d9f719f1 | 835 | target_open_ftype *func = target_factories[ti]; |
8981c758 | 836 | |
cb5dfff8 | 837 | target_debug_printf_nofunc ("-> %s->open (...)", ti->shortname); |
d9f719f1 | 838 | func (args, from_tty); |
cb5dfff8 | 839 | target_debug_printf_nofunc ("<- %s->open (%s, %d)", ti->shortname, args, from_tty); |
8981c758 TT |
840 | } |
841 | ||
d9f719f1 | 842 | /* See target.h. */ |
c22a2b88 TT |
843 | |
844 | void | |
d9f719f1 PA |
845 | add_target (const target_info &t, target_open_ftype *func, |
846 | completer_ftype *completer) | |
c22a2b88 TT |
847 | { |
848 | struct cmd_list_element *c; | |
849 | ||
d9f719f1 PA |
850 | auto &func_slot = target_factories[&t]; |
851 | if (func_slot != nullptr) | |
f34652de | 852 | internal_error (_("target already added (\"%s\")."), t.shortname); |
d9f719f1 | 853 | func_slot = func; |
c906108c SS |
854 | |
855 | if (targetlist == NULL) | |
3b6acaee | 856 | add_basic_prefix_cmd ("target", class_run, _("\ |
1bedd215 | 857 | Connect to a target machine or process.\n\ |
c906108c SS |
858 | The first argument is the type or protocol of the target machine.\n\ |
859 | Remaining arguments are interpreted by the target protocol. For more\n\ | |
860 | information on the arguments for a particular protocol, type\n\ | |
1bedd215 | 861 | `help target ' followed by the protocol name."), |
2f822da5 | 862 | &targetlist, 0, &cmdlist); |
d9f719f1 | 863 | c = add_cmd (t.shortname, no_class, t.doc, &targetlist); |
0f8e2034 | 864 | c->set_context ((void *) &t); |
5538b03c | 865 | c->func = open_target; |
9852c492 YQ |
866 | if (completer != NULL) |
867 | set_cmd_completer (c, completer); | |
868 | } | |
869 | ||
b48d48eb MM |
870 | /* See target.h. */ |
871 | ||
872 | void | |
d9f719f1 | 873 | add_deprecated_target_alias (const target_info &tinfo, const char *alias) |
b48d48eb MM |
874 | { |
875 | struct cmd_list_element *c; | |
b48d48eb MM |
876 | |
877 | /* If we use add_alias_cmd, here, we do not get the deprecated warning, | |
878 | see PR cli/15104. */ | |
d9f719f1 | 879 | c = add_cmd (alias, no_class, tinfo.doc, &targetlist); |
5538b03c | 880 | c->func = open_target; |
0f8e2034 | 881 | c->set_context ((void *) &tinfo); |
8579fd13 AB |
882 | gdb::unique_xmalloc_ptr<char> alt |
883 | = xstrprintf ("target %s", tinfo.shortname); | |
884 | deprecate_cmd (c, alt.release ()); | |
b48d48eb MM |
885 | } |
886 | ||
c906108c SS |
887 | /* Stub functions */ |
888 | ||
7d85a9c0 JB |
889 | void |
890 | target_kill (void) | |
891 | { | |
ed14d866 SM |
892 | |
893 | /* If the commit_resume_state of the to-be-killed-inferior's process stratum | |
894 | is true, and this inferior is the last live inferior with resumed threads | |
895 | of that target, then we want to leave commit_resume_state to false, as the | |
896 | target won't have any resumed threads anymore. We achieve this with | |
897 | this scoped_disable_commit_resumed. On construction, it will set the flag | |
898 | to false. On destruction, it will only set it to true if there are resumed | |
899 | threads left. */ | |
900 | scoped_disable_commit_resumed disable ("killing"); | |
328d42d8 | 901 | current_inferior ()->top_target ()->kill (); |
7d85a9c0 JB |
902 | } |
903 | ||
11cf8741 | 904 | void |
9cbe5fff | 905 | target_load (const char *arg, int from_tty) |
11cf8741 | 906 | { |
41336620 | 907 | target_dcache_invalidate (current_program_space->aspace); |
328d42d8 | 908 | current_inferior ()->top_target ()->load (arg, from_tty); |
11cf8741 JM |
909 | } |
910 | ||
223ffa71 | 911 | /* Define it. */ |
5842f62a | 912 | |
e671cd59 PA |
913 | target_terminal_state target_terminal::m_terminal_state |
914 | = target_terminal_state::is_ours; | |
5842f62a | 915 | |
223ffa71 | 916 | /* See target/target.h. */ |
5842f62a PA |
917 | |
918 | void | |
223ffa71 | 919 | target_terminal::init (void) |
5842f62a | 920 | { |
328d42d8 | 921 | current_inferior ()->top_target ()->terminal_init (); |
5842f62a | 922 | |
e671cd59 | 923 | m_terminal_state = target_terminal_state::is_ours; |
5842f62a PA |
924 | } |
925 | ||
223ffa71 | 926 | /* See target/target.h. */ |
2f99e8fc | 927 | |
d9d2d8b6 | 928 | void |
223ffa71 | 929 | target_terminal::inferior (void) |
d9d2d8b6 | 930 | { |
41fd2b0f PA |
931 | struct ui *ui = current_ui; |
932 | ||
d9d2d8b6 | 933 | /* A background resume (``run&'') should leave GDB in control of the |
3b12939d PA |
934 | terminal. */ |
935 | if (ui->prompt_state != PROMPT_BLOCKED) | |
d9d2d8b6 PA |
936 | return; |
937 | ||
215d3118 PA |
938 | /* Since we always run the inferior in the main console (unless "set |
939 | inferior-tty" is in effect), when some UI other than the main one | |
223ffa71 TT |
940 | calls target_terminal::inferior, then we leave the main UI's |
941 | terminal settings as is. */ | |
215d3118 PA |
942 | if (ui != main_ui) |
943 | return; | |
944 | ||
d9d2d8b6 PA |
945 | /* If GDB is resuming the inferior in the foreground, install |
946 | inferior's terminal modes. */ | |
e671cd59 PA |
947 | |
948 | struct inferior *inf = current_inferior (); | |
949 | ||
950 | if (inf->terminal_state != target_terminal_state::is_inferior) | |
951 | { | |
328d42d8 | 952 | current_inferior ()->top_target ()->terminal_inferior (); |
e671cd59 PA |
953 | inf->terminal_state = target_terminal_state::is_inferior; |
954 | } | |
955 | ||
956 | m_terminal_state = target_terminal_state::is_inferior; | |
957 | ||
958 | /* If the user hit C-c before, pretend that it was hit right | |
959 | here. */ | |
960 | if (check_quit_flag ()) | |
961 | target_pass_ctrlc (); | |
962 | } | |
963 | ||
964 | /* See target/target.h. */ | |
965 | ||
966 | void | |
967 | target_terminal::restore_inferior (void) | |
968 | { | |
969 | struct ui *ui = current_ui; | |
970 | ||
971 | /* See target_terminal::inferior(). */ | |
972 | if (ui->prompt_state != PROMPT_BLOCKED || ui != main_ui) | |
973 | return; | |
974 | ||
975 | /* Restore the terminal settings of inferiors that were in the | |
976 | foreground but are now ours_for_output due to a temporary | |
977 | target_target::ours_for_output() call. */ | |
978 | ||
979 | { | |
980 | scoped_restore_current_inferior restore_inferior; | |
e671cd59 | 981 | |
84b68c77 | 982 | for (::inferior *inf : all_inferiors ()) |
e671cd59 PA |
983 | { |
984 | if (inf->terminal_state == target_terminal_state::is_ours_for_output) | |
985 | { | |
986 | set_current_inferior (inf); | |
328d42d8 | 987 | current_inferior ()->top_target ()->terminal_inferior (); |
e671cd59 PA |
988 | inf->terminal_state = target_terminal_state::is_inferior; |
989 | } | |
990 | } | |
991 | } | |
992 | ||
993 | m_terminal_state = target_terminal_state::is_inferior; | |
93692b58 PA |
994 | |
995 | /* If the user hit C-c before, pretend that it was hit right | |
996 | here. */ | |
997 | if (check_quit_flag ()) | |
998 | target_pass_ctrlc (); | |
5842f62a PA |
999 | } |
1000 | ||
e671cd59 PA |
1001 | /* Switch terminal state to DESIRED_STATE, either is_ours, or |
1002 | is_ours_for_output. */ | |
1003 | ||
1004 | static void | |
1005 | target_terminal_is_ours_kind (target_terminal_state desired_state) | |
1006 | { | |
1007 | scoped_restore_current_inferior restore_inferior; | |
e671cd59 PA |
1008 | |
1009 | /* Must do this in two passes. First, have all inferiors save the | |
1010 | current terminal settings. Then, after all inferiors have add a | |
1011 | chance to safely save the terminal settings, restore GDB's | |
1012 | terminal settings. */ | |
1013 | ||
08036331 | 1014 | for (inferior *inf : all_inferiors ()) |
e671cd59 PA |
1015 | { |
1016 | if (inf->terminal_state == target_terminal_state::is_inferior) | |
1017 | { | |
1018 | set_current_inferior (inf); | |
328d42d8 | 1019 | current_inferior ()->top_target ()->terminal_save_inferior (); |
e671cd59 PA |
1020 | } |
1021 | } | |
1022 | ||
08036331 | 1023 | for (inferior *inf : all_inferiors ()) |
e671cd59 PA |
1024 | { |
1025 | /* Note we don't check is_inferior here like above because we | |
1026 | need to handle 'is_ours_for_output -> is_ours' too. Careful | |
1027 | to never transition from 'is_ours' to 'is_ours_for_output', | |
1028 | though. */ | |
1029 | if (inf->terminal_state != target_terminal_state::is_ours | |
1030 | && inf->terminal_state != desired_state) | |
1031 | { | |
1032 | set_current_inferior (inf); | |
1033 | if (desired_state == target_terminal_state::is_ours) | |
328d42d8 | 1034 | current_inferior ()->top_target ()->terminal_ours (); |
e671cd59 | 1035 | else if (desired_state == target_terminal_state::is_ours_for_output) |
328d42d8 | 1036 | current_inferior ()->top_target ()->terminal_ours_for_output (); |
e671cd59 PA |
1037 | else |
1038 | gdb_assert_not_reached ("unhandled desired state"); | |
1039 | inf->terminal_state = desired_state; | |
1040 | } | |
1041 | } | |
1042 | } | |
1043 | ||
223ffa71 | 1044 | /* See target/target.h. */ |
5842f62a PA |
1045 | |
1046 | void | |
223ffa71 | 1047 | target_terminal::ours () |
5842f62a | 1048 | { |
41fd2b0f PA |
1049 | struct ui *ui = current_ui; |
1050 | ||
223ffa71 | 1051 | /* See target_terminal::inferior. */ |
215d3118 PA |
1052 | if (ui != main_ui) |
1053 | return; | |
1054 | ||
e671cd59 | 1055 | if (m_terminal_state == target_terminal_state::is_ours) |
5842f62a PA |
1056 | return; |
1057 | ||
e671cd59 PA |
1058 | target_terminal_is_ours_kind (target_terminal_state::is_ours); |
1059 | m_terminal_state = target_terminal_state::is_ours; | |
5842f62a PA |
1060 | } |
1061 | ||
223ffa71 | 1062 | /* See target/target.h. */ |
5842f62a PA |
1063 | |
1064 | void | |
223ffa71 | 1065 | target_terminal::ours_for_output () |
5842f62a | 1066 | { |
215d3118 PA |
1067 | struct ui *ui = current_ui; |
1068 | ||
223ffa71 | 1069 | /* See target_terminal::inferior. */ |
215d3118 PA |
1070 | if (ui != main_ui) |
1071 | return; | |
1072 | ||
e671cd59 | 1073 | if (!target_terminal::is_inferior ()) |
5842f62a | 1074 | return; |
e671cd59 PA |
1075 | |
1076 | target_terminal_is_ours_kind (target_terminal_state::is_ours_for_output); | |
1077 | target_terminal::m_terminal_state = target_terminal_state::is_ours_for_output; | |
d9d2d8b6 | 1078 | } |
136d6dae | 1079 | |
223ffa71 TT |
1080 | /* See target/target.h. */ |
1081 | ||
1082 | void | |
1083 | target_terminal::info (const char *arg, int from_tty) | |
1084 | { | |
328d42d8 | 1085 | current_inferior ()->top_target ()->terminal_info (arg, from_tty); |
223ffa71 TT |
1086 | } |
1087 | ||
b0ed115f TT |
1088 | /* See target.h. */ |
1089 | ||
20f0d60d | 1090 | bool |
b0ed115f TT |
1091 | target_supports_terminal_ours (void) |
1092 | { | |
5b6d1e4f PA |
1093 | /* The current top target is the target at the top of the target |
1094 | stack of the current inferior. While normally there's always an | |
1095 | inferior, we must check for nullptr here because we can get here | |
1096 | very early during startup, before the initial inferior is first | |
1097 | created. */ | |
1098 | inferior *inf = current_inferior (); | |
20f0d60d | 1099 | |
5b6d1e4f | 1100 | if (inf == nullptr) |
20f0d60d | 1101 | return false; |
5b6d1e4f | 1102 | return inf->top_target ()->supports_terminal_ours (); |
b0ed115f TT |
1103 | } |
1104 | ||
c906108c | 1105 | static void |
fba45db2 | 1106 | tcomplain (void) |
c906108c | 1107 | { |
8a3fe4f8 | 1108 | error (_("You can't do that when your target is `%s'"), |
328d42d8 | 1109 | current_inferior ()->top_target ()->shortname ()); |
c906108c SS |
1110 | } |
1111 | ||
1112 | void | |
fba45db2 | 1113 | noprocess (void) |
c906108c | 1114 | { |
8a3fe4f8 | 1115 | error (_("You can't do that without a process to debug.")); |
c906108c SS |
1116 | } |
1117 | ||
c906108c | 1118 | static void |
0a4f40a2 | 1119 | default_terminal_info (struct target_ops *self, const char *args, int from_tty) |
c906108c | 1120 | { |
6cb06a8c | 1121 | gdb_printf (_("No saved terminal information.\n")); |
c906108c SS |
1122 | } |
1123 | ||
0ef643c8 JB |
1124 | /* A default implementation for the to_get_ada_task_ptid target method. |
1125 | ||
1126 | This function builds the PTID by using both LWP and TID as part of | |
1127 | the PTID lwp and tid elements. The pid used is the pid of the | |
1128 | inferior_ptid. */ | |
1129 | ||
2c0b251b | 1130 | static ptid_t |
c80e29db | 1131 | default_get_ada_task_ptid (struct target_ops *self, long lwp, ULONGEST tid) |
0ef643c8 | 1132 | { |
e99b03dc | 1133 | return ptid_t (inferior_ptid.pid (), lwp, tid); |
0ef643c8 JB |
1134 | } |
1135 | ||
32231432 | 1136 | static enum exec_direction_kind |
4c612759 | 1137 | default_execution_direction (struct target_ops *self) |
32231432 | 1138 | { |
05374cfd | 1139 | if (!target_can_execute_reverse ()) |
32231432 PA |
1140 | return EXEC_FORWARD; |
1141 | else if (!target_can_async_p ()) | |
1142 | return EXEC_FORWARD; | |
1143 | else | |
1144 | gdb_assert_not_reached ("\ | |
1145 | to_execution_direction must be implemented for reverse async"); | |
1146 | } | |
1147 | ||
a1740ee1 | 1148 | /* See target.h. */ |
c906108c | 1149 | |
5b6d1e4f | 1150 | void |
9678f8fe | 1151 | target_ops_ref_policy::decref (target_ops *t) |
5b6d1e4f PA |
1152 | { |
1153 | t->decref (); | |
1154 | if (t->refcount () == 0) | |
121b3efd PA |
1155 | { |
1156 | if (t->stratum () == process_stratum) | |
1157 | connection_list_remove (as_process_stratum_target (t)); | |
57685738 TT |
1158 | |
1159 | for (inferior *inf : all_inferiors ()) | |
1160 | gdb_assert (!inf->target_is_pushed (t)); | |
1161 | ||
1162 | fileio_handles_invalidate_target (t); | |
1163 | ||
1164 | t->close (); | |
1165 | ||
cb5dfff8 | 1166 | target_debug_printf_nofunc ("closing target"); |
121b3efd | 1167 | } |
5b6d1e4f PA |
1168 | } |
1169 | ||
1170 | /* See target.h. */ | |
1171 | ||
b26a4dcb | 1172 | void |
a1740ee1 | 1173 | target_stack::push (target_ops *t) |
c906108c | 1174 | { |
91e3d1d1 AB |
1175 | /* We must create a new reference first. It is possible that T is |
1176 | already pushed on this target stack, in which case we will first | |
1177 | unpush it below, before re-pushing it. If we don't increment the | |
1178 | reference count now, then when we unpush it, we might end up deleting | |
1179 | T, which is not good. */ | |
1180 | auto ref = target_ops_ref::new_reference (t); | |
5b6d1e4f | 1181 | |
66b4deae PA |
1182 | strata stratum = t->stratum (); |
1183 | ||
5b6d1e4f PA |
1184 | /* If there's already a target at this stratum, remove it. */ |
1185 | ||
91e3d1d1 AB |
1186 | if (m_stack[stratum].get () != nullptr) |
1187 | unpush (m_stack[stratum].get ()); | |
c906108c | 1188 | |
a1740ee1 | 1189 | /* Now add the new one. */ |
91e3d1d1 | 1190 | m_stack[stratum] = std::move (ref); |
5d502164 | 1191 | |
66b4deae PA |
1192 | if (m_top < stratum) |
1193 | m_top = stratum; | |
91e3d1d1 AB |
1194 | |
1195 | if (stratum == process_stratum) | |
1196 | connection_list_add (as_process_stratum_target (t)); | |
a1740ee1 PA |
1197 | } |
1198 | ||
1199 | /* See target.h. */ | |
c906108c | 1200 | |
a1740ee1 PA |
1201 | bool |
1202 | target_stack::unpush (target_ops *t) | |
c906108c | 1203 | { |
1688cb29 TT |
1204 | gdb_assert (t != NULL); |
1205 | ||
66b4deae PA |
1206 | strata stratum = t->stratum (); |
1207 | ||
1208 | if (stratum == dummy_stratum) | |
f34652de | 1209 | internal_error (_("Attempt to unpush the dummy target")); |
c8d104ad | 1210 | |
a1740ee1 PA |
1211 | /* Look for the specified target. Note that a target can only occur |
1212 | once in the target stack. */ | |
c906108c | 1213 | |
66b4deae | 1214 | if (m_stack[stratum] != t) |
258b763a | 1215 | { |
a1740ee1 PA |
1216 | /* If T wasn't pushed, quit. Only open targets should be |
1217 | closed. */ | |
1218 | return false; | |
258b763a | 1219 | } |
c906108c | 1220 | |
66b4deae | 1221 | if (m_top == stratum) |
bedc4734 | 1222 | m_top = this->find_beneath (t)->stratum (); |
c906108c | 1223 | |
91e3d1d1 AB |
1224 | /* Move the target reference off the target stack, this sets the pointer |
1225 | held in m_stack to nullptr, and places the reference in ref. When | |
1226 | ref goes out of scope its reference count will be decremented, which | |
1227 | might cause the target to close. | |
1228 | ||
1229 | We have to do it this way, and not just set the value in m_stack to | |
1230 | nullptr directly, because doing so would decrement the reference | |
1231 | count first, which might close the target, and closing the target | |
1232 | does a check that the target is not on any inferiors target_stack. */ | |
1233 | auto ref = std::move (m_stack[stratum]); | |
305436e0 | 1234 | |
a1740ee1 | 1235 | return true; |
c906108c SS |
1236 | } |
1237 | ||
fadf6add SM |
1238 | void |
1239 | target_unpusher::operator() (struct target_ops *ops) const | |
1240 | { | |
1241 | current_inferior ()->unpush_target (ops); | |
1242 | } | |
1243 | ||
f0f9ff95 TT |
1244 | /* Default implementation of to_get_thread_local_address. */ |
1245 | ||
1246 | static void | |
1247 | generic_tls_error (void) | |
1248 | { | |
1249 | throw_error (TLS_GENERIC_ERROR, | |
1250 | _("Cannot find thread-local variables on this target")); | |
1251 | } | |
1252 | ||
72f5cf0e | 1253 | /* Using the objfile specified in OBJFILE, find the address for the |
9e35dae4 DJ |
1254 | current thread's thread-local storage with offset OFFSET. */ |
1255 | CORE_ADDR | |
1256 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) | |
1257 | { | |
1258 | volatile CORE_ADDR addr = 0; | |
328d42d8 | 1259 | struct target_ops *target = current_inferior ()->top_target (); |
99d9c3b9 | 1260 | gdbarch *gdbarch = current_inferior ()->arch (); |
9e35dae4 | 1261 | |
4cc98c36 JB |
1262 | /* If OBJFILE is a separate debug object file, look for the |
1263 | original object file. */ | |
1264 | if (objfile->separate_debug_objfile_backlink != NULL) | |
1265 | objfile = objfile->separate_debug_objfile_backlink; | |
1266 | ||
6e056c81 | 1267 | if (gdbarch_fetch_tls_load_module_address_p (gdbarch)) |
9e35dae4 DJ |
1268 | { |
1269 | ptid_t ptid = inferior_ptid; | |
9e35dae4 | 1270 | |
a70b8144 | 1271 | try |
9e35dae4 DJ |
1272 | { |
1273 | CORE_ADDR lm_addr; | |
1274 | ||
1275 | /* Fetch the load module address for this objfile. */ | |
6e056c81 | 1276 | lm_addr = gdbarch_fetch_tls_load_module_address (gdbarch, |
dda83cd7 | 1277 | objfile); |
9e35dae4 | 1278 | |
6e056c81 JB |
1279 | if (gdbarch_get_thread_local_address_p (gdbarch)) |
1280 | addr = gdbarch_get_thread_local_address (gdbarch, ptid, lm_addr, | |
1281 | offset); | |
1282 | else | |
1283 | addr = target->get_thread_local_address (ptid, lm_addr, offset); | |
9e35dae4 DJ |
1284 | } |
1285 | /* If an error occurred, print TLS related messages here. Otherwise, | |
dda83cd7 | 1286 | throw the error to some higher catcher. */ |
230d2906 | 1287 | catch (const gdb_exception &ex) |
9e35dae4 DJ |
1288 | { |
1289 | int objfile_is_library = (objfile->flags & OBJF_SHARED); | |
1290 | ||
1291 | switch (ex.error) | |
1292 | { | |
1293 | case TLS_NO_LIBRARY_SUPPORT_ERROR: | |
3e43a32a MS |
1294 | error (_("Cannot find thread-local variables " |
1295 | "in this thread library.")); | |
9e35dae4 DJ |
1296 | break; |
1297 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: | |
1298 | if (objfile_is_library) | |
1299 | error (_("Cannot find shared library `%s' in dynamic" | |
dda83cd7 | 1300 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
1301 | else |
1302 | error (_("Cannot find executable file `%s' in dynamic" | |
dda83cd7 | 1303 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
1304 | break; |
1305 | case TLS_NOT_ALLOCATED_YET_ERROR: | |
1306 | if (objfile_is_library) | |
1307 | error (_("The inferior has not yet allocated storage for" | |
dda83cd7 SM |
1308 | " thread-local variables in\n" |
1309 | "the shared library `%s'\n" | |
1310 | "for %s"), | |
a068643d TT |
1311 | objfile_name (objfile), |
1312 | target_pid_to_str (ptid).c_str ()); | |
9e35dae4 DJ |
1313 | else |
1314 | error (_("The inferior has not yet allocated storage for" | |
dda83cd7 SM |
1315 | " thread-local variables in\n" |
1316 | "the executable `%s'\n" | |
1317 | "for %s"), | |
a068643d TT |
1318 | objfile_name (objfile), |
1319 | target_pid_to_str (ptid).c_str ()); | |
9e35dae4 DJ |
1320 | break; |
1321 | case TLS_GENERIC_ERROR: | |
1322 | if (objfile_is_library) | |
1323 | error (_("Cannot find thread-local storage for %s, " | |
dda83cd7 | 1324 | "shared library %s:\n%s"), |
a068643d | 1325 | target_pid_to_str (ptid).c_str (), |
3d6e9d23 | 1326 | objfile_name (objfile), ex.what ()); |
9e35dae4 DJ |
1327 | else |
1328 | error (_("Cannot find thread-local storage for %s, " | |
dda83cd7 | 1329 | "executable file %s:\n%s"), |
a068643d | 1330 | target_pid_to_str (ptid).c_str (), |
3d6e9d23 | 1331 | objfile_name (objfile), ex.what ()); |
9e35dae4 DJ |
1332 | break; |
1333 | default: | |
eedc3f4f | 1334 | throw; |
9e35dae4 DJ |
1335 | break; |
1336 | } | |
1337 | } | |
1338 | } | |
9e35dae4 DJ |
1339 | else |
1340 | error (_("Cannot find thread-local variables on this target")); | |
1341 | ||
1342 | return addr; | |
1343 | } | |
1344 | ||
6be7b56e | 1345 | const char * |
01cb8804 | 1346 | target_xfer_status_to_string (enum target_xfer_status status) |
6be7b56e PA |
1347 | { |
1348 | #define CASE(X) case X: return #X | |
01cb8804 | 1349 | switch (status) |
6be7b56e PA |
1350 | { |
1351 | CASE(TARGET_XFER_E_IO); | |
bc113b4e | 1352 | CASE(TARGET_XFER_UNAVAILABLE); |
6be7b56e PA |
1353 | default: |
1354 | return "<unknown>"; | |
1355 | } | |
1356 | #undef CASE | |
1357 | }; | |
1358 | ||
1359 | ||
25b5a04e | 1360 | const std::vector<target_section> * |
07b82ea5 PA |
1361 | target_get_section_table (struct target_ops *target) |
1362 | { | |
f6ac5f3d | 1363 | return target->get_section_table (); |
07b82ea5 PA |
1364 | } |
1365 | ||
8db32d44 | 1366 | /* Find a section containing ADDR. */ |
07b82ea5 | 1367 | |
19cf757a | 1368 | const struct target_section * |
8db32d44 AC |
1369 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
1370 | { | |
25b5a04e | 1371 | const std::vector<target_section> *table = target_get_section_table (target); |
07b82ea5 PA |
1372 | |
1373 | if (table == NULL) | |
1374 | return NULL; | |
1375 | ||
19cf757a | 1376 | for (const target_section &secp : *table) |
8db32d44 | 1377 | { |
bb2a6777 TT |
1378 | if (addr >= secp.addr && addr < secp.endaddr) |
1379 | return &secp; | |
8db32d44 AC |
1380 | } |
1381 | return NULL; | |
1382 | } | |
1383 | ||
336aa7b7 AB |
1384 | /* See target.h. */ |
1385 | ||
25b5a04e | 1386 | const std::vector<target_section> * |
336aa7b7 AB |
1387 | default_get_section_table () |
1388 | { | |
1389 | return ¤t_program_space->target_sections (); | |
1390 | } | |
0fec99e8 PA |
1391 | |
1392 | /* Helper for the memory xfer routines. Checks the attributes of the | |
1393 | memory region of MEMADDR against the read or write being attempted. | |
1394 | If the access is permitted returns true, otherwise returns false. | |
1395 | REGION_P is an optional output parameter. If not-NULL, it is | |
1396 | filled with a pointer to the memory region of MEMADDR. REG_LEN | |
1397 | returns LEN trimmed to the end of the region. This is how much the | |
1398 | caller can continue requesting, if the access is permitted. A | |
1399 | single xfer request must not straddle memory region boundaries. */ | |
1400 | ||
1401 | static int | |
1402 | memory_xfer_check_region (gdb_byte *readbuf, const gdb_byte *writebuf, | |
1403 | ULONGEST memaddr, ULONGEST len, ULONGEST *reg_len, | |
1404 | struct mem_region **region_p) | |
1405 | { | |
1406 | struct mem_region *region; | |
1407 | ||
1408 | region = lookup_mem_region (memaddr); | |
1409 | ||
1410 | if (region_p != NULL) | |
1411 | *region_p = region; | |
1412 | ||
1413 | switch (region->attrib.mode) | |
1414 | { | |
1415 | case MEM_RO: | |
1416 | if (writebuf != NULL) | |
1417 | return 0; | |
1418 | break; | |
1419 | ||
1420 | case MEM_WO: | |
1421 | if (readbuf != NULL) | |
1422 | return 0; | |
1423 | break; | |
1424 | ||
1425 | case MEM_FLASH: | |
1426 | /* We only support writing to flash during "load" for now. */ | |
1427 | if (writebuf != NULL) | |
1428 | error (_("Writing to flash memory forbidden in this context")); | |
1429 | break; | |
1430 | ||
1431 | case MEM_NONE: | |
1432 | return 0; | |
1433 | } | |
1434 | ||
1435 | /* region->hi == 0 means there's no upper bound. */ | |
1436 | if (memaddr + len < region->hi || region->hi == 0) | |
1437 | *reg_len = len; | |
1438 | else | |
1439 | *reg_len = region->hi - memaddr; | |
1440 | ||
1441 | return 1; | |
1442 | } | |
1443 | ||
9f713294 YQ |
1444 | /* Read memory from more than one valid target. A core file, for |
1445 | instance, could have some of memory but delegate other bits to | |
1446 | the target below it. So, we must manually try all targets. */ | |
1447 | ||
cc9f16aa | 1448 | enum target_xfer_status |
17fde6d0 | 1449 | raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf, |
9b409511 YQ |
1450 | const gdb_byte *writebuf, ULONGEST memaddr, LONGEST len, |
1451 | ULONGEST *xfered_len) | |
9f713294 | 1452 | { |
9b409511 | 1453 | enum target_xfer_status res; |
9f713294 YQ |
1454 | |
1455 | do | |
1456 | { | |
f6ac5f3d PA |
1457 | res = ops->xfer_partial (TARGET_OBJECT_MEMORY, NULL, |
1458 | readbuf, writebuf, memaddr, len, | |
1459 | xfered_len); | |
9b409511 | 1460 | if (res == TARGET_XFER_OK) |
9f713294 YQ |
1461 | break; |
1462 | ||
633785ff | 1463 | /* Stop if the target reports that the memory is not available. */ |
bc113b4e | 1464 | if (res == TARGET_XFER_UNAVAILABLE) |
633785ff MM |
1465 | break; |
1466 | ||
2735d421 | 1467 | /* Don't continue past targets which have all the memory. |
dda83cd7 | 1468 | At one time, this code was necessary to read data from |
2735d421 KB |
1469 | executables / shared libraries when data for the requested |
1470 | addresses weren't available in the core file. But now the | |
1471 | core target handles this case itself. */ | |
f6ac5f3d | 1472 | if (ops->has_all_memory ()) |
9f713294 YQ |
1473 | break; |
1474 | ||
b6a8c27b | 1475 | ops = ops->beneath (); |
9f713294 YQ |
1476 | } |
1477 | while (ops != NULL); | |
1478 | ||
0f26cec1 PA |
1479 | /* The cache works at the raw memory level. Make sure the cache |
1480 | gets updated with raw contents no matter what kind of memory | |
1481 | object was originally being written. Note we do write-through | |
1482 | first, so that if it fails, we don't write to the cache contents | |
1483 | that never made it to the target. */ | |
1484 | if (writebuf != NULL | |
d7e15655 | 1485 | && inferior_ptid != null_ptid |
41336620 | 1486 | && target_dcache_init_p (current_program_space->aspace) |
0f26cec1 PA |
1487 | && (stack_cache_enabled_p () || code_cache_enabled_p ())) |
1488 | { | |
41336620 | 1489 | DCACHE *dcache = target_dcache_get (current_program_space->aspace); |
0f26cec1 PA |
1490 | |
1491 | /* Note that writing to an area of memory which wasn't present | |
1492 | in the cache doesn't cause it to be loaded in. */ | |
1493 | dcache_update (dcache, res, memaddr, writebuf, *xfered_len); | |
1494 | } | |
1495 | ||
9f713294 YQ |
1496 | return res; |
1497 | } | |
1498 | ||
7f79c47e DE |
1499 | /* Perform a partial memory transfer. |
1500 | For docs see target.h, to_xfer_partial. */ | |
cf7a04e8 | 1501 | |
9b409511 | 1502 | static enum target_xfer_status |
f0ba3972 | 1503 | memory_xfer_partial_1 (struct target_ops *ops, enum target_object object, |
17fde6d0 | 1504 | gdb_byte *readbuf, const gdb_byte *writebuf, ULONGEST memaddr, |
9b409511 | 1505 | ULONGEST len, ULONGEST *xfered_len) |
0779438d | 1506 | { |
9b409511 | 1507 | enum target_xfer_status res; |
0fec99e8 | 1508 | ULONGEST reg_len; |
cf7a04e8 | 1509 | struct mem_region *region; |
4e5d721f | 1510 | struct inferior *inf; |
cf7a04e8 | 1511 | |
07b82ea5 PA |
1512 | /* For accesses to unmapped overlay sections, read directly from |
1513 | files. Must do this first, as MEMADDR may need adjustment. */ | |
1514 | if (readbuf != NULL && overlay_debugging) | |
1515 | { | |
1516 | struct obj_section *section = find_pc_overlay (memaddr); | |
5d502164 | 1517 | |
07b82ea5 PA |
1518 | if (pc_in_unmapped_range (memaddr, section)) |
1519 | { | |
25b5a04e | 1520 | const std::vector<target_section> *table = target_get_section_table (ops); |
07b82ea5 | 1521 | const char *section_name = section->the_bfd_section->name; |
5d502164 | 1522 | |
07b82ea5 | 1523 | memaddr = overlay_mapped_address (memaddr, section); |
e56cb451 KB |
1524 | |
1525 | auto match_cb = [=] (const struct target_section *s) | |
1526 | { | |
1527 | return (strcmp (section_name, s->the_bfd_section->name) == 0); | |
1528 | }; | |
1529 | ||
07b82ea5 | 1530 | return section_table_xfer_memory_partial (readbuf, writebuf, |
9b409511 | 1531 | memaddr, len, xfered_len, |
bb2a6777 | 1532 | *table, match_cb); |
07b82ea5 PA |
1533 | } |
1534 | } | |
1535 | ||
1536 | /* Try the executable files, if "trust-readonly-sections" is set. */ | |
cf7a04e8 DJ |
1537 | if (readbuf != NULL && trust_readonly) |
1538 | { | |
19cf757a AB |
1539 | const struct target_section *secp |
1540 | = target_section_by_addr (ops, memaddr); | |
cf7a04e8 | 1541 | if (secp != NULL |
fd361982 | 1542 | && (bfd_section_flags (secp->the_bfd_section) & SEC_READONLY)) |
07b82ea5 | 1543 | { |
25b5a04e | 1544 | const std::vector<target_section> *table = target_get_section_table (ops); |
07b82ea5 | 1545 | return section_table_xfer_memory_partial (readbuf, writebuf, |
9b409511 | 1546 | memaddr, len, xfered_len, |
bb2a6777 | 1547 | *table); |
07b82ea5 | 1548 | } |
98646950 UW |
1549 | } |
1550 | ||
cf7a04e8 | 1551 | /* Try GDB's internal data cache. */ |
cf7a04e8 | 1552 | |
0fec99e8 PA |
1553 | if (!memory_xfer_check_region (readbuf, writebuf, memaddr, len, ®_len, |
1554 | ®ion)) | |
1555 | return TARGET_XFER_E_IO; | |
cf7a04e8 | 1556 | |
d7e15655 | 1557 | if (inferior_ptid != null_ptid) |
00431a78 | 1558 | inf = current_inferior (); |
6c95b8df PA |
1559 | else |
1560 | inf = NULL; | |
4e5d721f DE |
1561 | |
1562 | if (inf != NULL | |
0f26cec1 | 1563 | && readbuf != NULL |
2f4d8875 PA |
1564 | /* The dcache reads whole cache lines; that doesn't play well |
1565 | with reading from a trace buffer, because reading outside of | |
1566 | the collected memory range fails. */ | |
1567 | && get_traceframe_number () == -1 | |
4e5d721f | 1568 | && (region->attrib.cache |
29453a14 YQ |
1569 | || (stack_cache_enabled_p () && object == TARGET_OBJECT_STACK_MEMORY) |
1570 | || (code_cache_enabled_p () && object == TARGET_OBJECT_CODE_MEMORY))) | |
cf7a04e8 | 1571 | { |
41336620 SM |
1572 | DCACHE *dcache |
1573 | = target_dcache_get_or_init (current_program_space->aspace); | |
2a2f9fe4 | 1574 | |
0f26cec1 PA |
1575 | return dcache_read_memory_partial (ops, dcache, memaddr, readbuf, |
1576 | reg_len, xfered_len); | |
cf7a04e8 DJ |
1577 | } |
1578 | ||
1579 | /* If none of those methods found the memory we wanted, fall back | |
1580 | to a target partial transfer. Normally a single call to | |
1581 | to_xfer_partial is enough; if it doesn't recognize an object | |
1582 | it will call the to_xfer_partial of the next target down. | |
1583 | But for memory this won't do. Memory is the only target | |
9b409511 YQ |
1584 | object which can be read from more than one valid target. |
1585 | A core file, for instance, could have some of memory but | |
1586 | delegate other bits to the target below it. So, we must | |
1587 | manually try all targets. */ | |
1588 | ||
1589 | res = raw_memory_xfer_partial (ops, readbuf, writebuf, memaddr, reg_len, | |
1590 | xfered_len); | |
cf7a04e8 DJ |
1591 | |
1592 | /* If we still haven't got anything, return the last error. We | |
1593 | give up. */ | |
1594 | return res; | |
0779438d AC |
1595 | } |
1596 | ||
f0ba3972 PA |
1597 | /* Perform a partial memory transfer. For docs see target.h, |
1598 | to_xfer_partial. */ | |
1599 | ||
9b409511 | 1600 | static enum target_xfer_status |
f0ba3972 | 1601 | memory_xfer_partial (struct target_ops *ops, enum target_object object, |
9b409511 YQ |
1602 | gdb_byte *readbuf, const gdb_byte *writebuf, |
1603 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) | |
f0ba3972 | 1604 | { |
9b409511 | 1605 | enum target_xfer_status res; |
f0ba3972 PA |
1606 | |
1607 | /* Zero length requests are ok and require no work. */ | |
1608 | if (len == 0) | |
9b409511 | 1609 | return TARGET_XFER_EOF; |
f0ba3972 | 1610 | |
99d9c3b9 SM |
1611 | memaddr = gdbarch_remove_non_address_bits (current_inferior ()->arch (), |
1612 | memaddr); | |
a738ea1d | 1613 | |
f0ba3972 PA |
1614 | /* Fill in READBUF with breakpoint shadows, or WRITEBUF with |
1615 | breakpoint insns, thus hiding out from higher layers whether | |
1616 | there are software breakpoints inserted in the code stream. */ | |
1617 | if (readbuf != NULL) | |
1618 | { | |
9b409511 YQ |
1619 | res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len, |
1620 | xfered_len); | |
f0ba3972 | 1621 | |
9b409511 | 1622 | if (res == TARGET_XFER_OK && !show_memory_breakpoints) |
c63528fc | 1623 | breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, *xfered_len); |
f0ba3972 PA |
1624 | } |
1625 | else | |
1626 | { | |
67c059c2 AB |
1627 | /* A large write request is likely to be partially satisfied |
1628 | by memory_xfer_partial_1. We will continually malloc | |
1629 | and free a copy of the entire write request for breakpoint | |
1630 | shadow handling even though we only end up writing a small | |
09c98b44 DB |
1631 | subset of it. Cap writes to a limit specified by the target |
1632 | to mitigate this. */ | |
f6ac5f3d | 1633 | len = std::min (ops->get_memory_xfer_limit (), len); |
67c059c2 | 1634 | |
26fcd5d7 TT |
1635 | gdb::byte_vector buf (writebuf, writebuf + len); |
1636 | breakpoint_xfer_memory (NULL, buf.data (), writebuf, memaddr, len); | |
1637 | res = memory_xfer_partial_1 (ops, object, NULL, buf.data (), memaddr, len, | |
9b409511 | 1638 | xfered_len); |
f0ba3972 PA |
1639 | } |
1640 | ||
1641 | return res; | |
1642 | } | |
1643 | ||
cb85b21b TT |
1644 | scoped_restore_tmpl<int> |
1645 | make_scoped_restore_show_memory_breakpoints (int show) | |
8defab1a | 1646 | { |
cb85b21b | 1647 | return make_scoped_restore (&show_memory_breakpoints, show); |
8defab1a DJ |
1648 | } |
1649 | ||
7f79c47e DE |
1650 | /* For docs see target.h, to_xfer_partial. */ |
1651 | ||
9b409511 | 1652 | enum target_xfer_status |
27394598 AC |
1653 | target_xfer_partial (struct target_ops *ops, |
1654 | enum target_object object, const char *annex, | |
4ac248ca | 1655 | gdb_byte *readbuf, const gdb_byte *writebuf, |
9b409511 YQ |
1656 | ULONGEST offset, ULONGEST len, |
1657 | ULONGEST *xfered_len) | |
27394598 | 1658 | { |
9b409511 | 1659 | enum target_xfer_status retval; |
27394598 | 1660 | |
ce6d0892 YQ |
1661 | /* Transfer is done when LEN is zero. */ |
1662 | if (len == 0) | |
9b409511 | 1663 | return TARGET_XFER_EOF; |
ce6d0892 | 1664 | |
d914c394 SS |
1665 | if (writebuf && !may_write_memory) |
1666 | error (_("Writing to memory is not allowed (addr %s, len %s)"), | |
1667 | core_addr_to_string_nz (offset), plongest (len)); | |
1668 | ||
9b409511 YQ |
1669 | *xfered_len = 0; |
1670 | ||
cf7a04e8 DJ |
1671 | /* If this is a memory transfer, let the memory-specific code |
1672 | have a look at it instead. Memory transfers are more | |
1673 | complicated. */ | |
29453a14 YQ |
1674 | if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY |
1675 | || object == TARGET_OBJECT_CODE_MEMORY) | |
4e5d721f | 1676 | retval = memory_xfer_partial (ops, object, readbuf, |
9b409511 | 1677 | writebuf, offset, len, xfered_len); |
9f713294 | 1678 | else if (object == TARGET_OBJECT_RAW_MEMORY) |
cf7a04e8 | 1679 | { |
0fec99e8 PA |
1680 | /* Skip/avoid accessing the target if the memory region |
1681 | attributes block the access. Check this here instead of in | |
1682 | raw_memory_xfer_partial as otherwise we'd end up checking | |
1683 | this twice in the case of the memory_xfer_partial path is | |
1684 | taken; once before checking the dcache, and another in the | |
1685 | tail call to raw_memory_xfer_partial. */ | |
1686 | if (!memory_xfer_check_region (readbuf, writebuf, offset, len, &len, | |
1687 | NULL)) | |
1688 | return TARGET_XFER_E_IO; | |
1689 | ||
9f713294 | 1690 | /* Request the normal memory object from other layers. */ |
9b409511 YQ |
1691 | retval = raw_memory_xfer_partial (ops, readbuf, writebuf, offset, len, |
1692 | xfered_len); | |
cf7a04e8 | 1693 | } |
9f713294 | 1694 | else |
f6ac5f3d PA |
1695 | retval = ops->xfer_partial (object, annex, readbuf, |
1696 | writebuf, offset, len, xfered_len); | |
cf7a04e8 | 1697 | |
27394598 AC |
1698 | if (targetdebug) |
1699 | { | |
1700 | const unsigned char *myaddr = NULL; | |
cb5dfff8 SM |
1701 | std::string s |
1702 | = string_printf ("%s:target_xfer_partial " | |
1703 | "(%d, %s, %s, %s, %s, %s) = %d, %s", | |
1704 | ops->shortname (), (int) object, | |
1705 | (annex ? annex : "(null)"), | |
1706 | host_address_to_string (readbuf), | |
1707 | host_address_to_string (writebuf), | |
1708 | core_addr_to_string_nz (offset), pulongest (len), | |
1709 | retval, pulongest (*xfered_len)); | |
27394598 AC |
1710 | |
1711 | if (readbuf) | |
1712 | myaddr = readbuf; | |
1713 | if (writebuf) | |
1714 | myaddr = writebuf; | |
9b409511 | 1715 | if (retval == TARGET_XFER_OK && myaddr != NULL) |
27394598 AC |
1716 | { |
1717 | int i; | |
2bc416ba | 1718 | |
cb5dfff8 | 1719 | string_appendf (s, ", bytes ="); |
9b409511 | 1720 | for (i = 0; i < *xfered_len; i++) |
27394598 | 1721 | { |
53b71562 | 1722 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1723 | { |
1724 | if (targetdebug < 2 && i > 0) | |
1725 | { | |
cb5dfff8 | 1726 | string_appendf (s, " ..."); |
27394598 AC |
1727 | break; |
1728 | } | |
cb5dfff8 SM |
1729 | |
1730 | target_debug_printf_nofunc ("%s", s.c_str ()); | |
1731 | s.clear(); | |
27394598 | 1732 | } |
2bc416ba | 1733 | |
cb5dfff8 | 1734 | string_appendf (s, " %02x", myaddr[i] & 0xff); |
27394598 AC |
1735 | } |
1736 | } | |
2bc416ba | 1737 | |
cb5dfff8 | 1738 | target_debug_printf_nofunc ("%s", s.c_str ()); |
27394598 | 1739 | } |
9b409511 YQ |
1740 | |
1741 | /* Check implementations of to_xfer_partial update *XFERED_LEN | |
1742 | properly. Do assertion after printing debug messages, so that we | |
1743 | can find more clues on assertion failure from debugging messages. */ | |
bc113b4e | 1744 | if (retval == TARGET_XFER_OK || retval == TARGET_XFER_UNAVAILABLE) |
9b409511 YQ |
1745 | gdb_assert (*xfered_len > 0); |
1746 | ||
27394598 AC |
1747 | return retval; |
1748 | } | |
1749 | ||
578d3588 PA |
1750 | /* Read LEN bytes of target memory at address MEMADDR, placing the |
1751 | results in GDB's memory at MYADDR. Returns either 0 for success or | |
d09f2c3f | 1752 | -1 if any error occurs. |
c906108c SS |
1753 | |
1754 | If an error occurs, no guarantee is made about the contents of the data at | |
1755 | MYADDR. In particular, the caller should not depend upon partial reads | |
1756 | filling the buffer with good data. There is no way for the caller to know | |
1757 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 | 1758 | deal with partial reads should call target_read (which will retry until |
c378eb4e | 1759 | it makes no progress, and then return how much was transferred). */ |
c906108c SS |
1760 | |
1761 | int | |
1b162304 | 1762 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
c906108c | 1763 | { |
328d42d8 SM |
1764 | if (target_read (current_inferior ()->top_target (), |
1765 | TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1766 | myaddr, memaddr, len) == len) |
1767 | return 0; | |
0779438d | 1768 | else |
d09f2c3f | 1769 | return -1; |
c906108c SS |
1770 | } |
1771 | ||
721ec300 GB |
1772 | /* See target/target.h. */ |
1773 | ||
1774 | int | |
1775 | target_read_uint32 (CORE_ADDR memaddr, uint32_t *result) | |
1776 | { | |
1777 | gdb_byte buf[4]; | |
1778 | int r; | |
1779 | ||
1780 | r = target_read_memory (memaddr, buf, sizeof buf); | |
1781 | if (r != 0) | |
1782 | return r; | |
99d9c3b9 SM |
1783 | *result = extract_unsigned_integer |
1784 | (buf, sizeof buf, | |
1785 | gdbarch_byte_order (current_inferior ()->arch ())); | |
721ec300 GB |
1786 | return 0; |
1787 | } | |
1788 | ||
aee4bf85 PA |
1789 | /* Like target_read_memory, but specify explicitly that this is a read |
1790 | from the target's raw memory. That is, this read bypasses the | |
1791 | dcache, breakpoint shadowing, etc. */ | |
1792 | ||
1793 | int | |
1794 | target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1795 | { | |
328d42d8 SM |
1796 | if (target_read (current_inferior ()->top_target (), |
1797 | TARGET_OBJECT_RAW_MEMORY, NULL, | |
aee4bf85 PA |
1798 | myaddr, memaddr, len) == len) |
1799 | return 0; | |
1800 | else | |
d09f2c3f | 1801 | return -1; |
aee4bf85 PA |
1802 | } |
1803 | ||
4e5d721f DE |
1804 | /* Like target_read_memory, but specify explicitly that this is a read from |
1805 | the target's stack. This may trigger different cache behavior. */ | |
1806 | ||
1807 | int | |
45aa4659 | 1808 | target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
4e5d721f | 1809 | { |
328d42d8 SM |
1810 | if (target_read (current_inferior ()->top_target (), |
1811 | TARGET_OBJECT_STACK_MEMORY, NULL, | |
4e5d721f DE |
1812 | myaddr, memaddr, len) == len) |
1813 | return 0; | |
1814 | else | |
d09f2c3f | 1815 | return -1; |
4e5d721f DE |
1816 | } |
1817 | ||
29453a14 YQ |
1818 | /* Like target_read_memory, but specify explicitly that this is a read from |
1819 | the target's code. This may trigger different cache behavior. */ | |
1820 | ||
1821 | int | |
1822 | target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1823 | { | |
328d42d8 SM |
1824 | if (target_read (current_inferior ()->top_target (), |
1825 | TARGET_OBJECT_CODE_MEMORY, NULL, | |
29453a14 YQ |
1826 | myaddr, memaddr, len) == len) |
1827 | return 0; | |
1828 | else | |
d09f2c3f | 1829 | return -1; |
29453a14 YQ |
1830 | } |
1831 | ||
7f79c47e | 1832 | /* Write LEN bytes from MYADDR to target memory at address MEMADDR. |
d09f2c3f PA |
1833 | Returns either 0 for success or -1 if any error occurs. If an |
1834 | error occurs, no guarantee is made about how much data got written. | |
1835 | Callers that can deal with partial writes should call | |
1836 | target_write. */ | |
7f79c47e | 1837 | |
c906108c | 1838 | int |
45aa4659 | 1839 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
c906108c | 1840 | { |
328d42d8 SM |
1841 | if (target_write (current_inferior ()->top_target (), |
1842 | TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1843 | myaddr, memaddr, len) == len) |
1844 | return 0; | |
0779438d | 1845 | else |
d09f2c3f | 1846 | return -1; |
c906108c | 1847 | } |
c5aa993b | 1848 | |
f0ba3972 | 1849 | /* Write LEN bytes from MYADDR to target raw memory at address |
d09f2c3f PA |
1850 | MEMADDR. Returns either 0 for success or -1 if any error occurs. |
1851 | If an error occurs, no guarantee is made about how much data got | |
1852 | written. Callers that can deal with partial writes should call | |
1853 | target_write. */ | |
f0ba3972 PA |
1854 | |
1855 | int | |
45aa4659 | 1856 | target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
f0ba3972 | 1857 | { |
328d42d8 SM |
1858 | if (target_write (current_inferior ()->top_target (), |
1859 | TARGET_OBJECT_RAW_MEMORY, NULL, | |
f0ba3972 PA |
1860 | myaddr, memaddr, len) == len) |
1861 | return 0; | |
1862 | else | |
d09f2c3f | 1863 | return -1; |
f0ba3972 PA |
1864 | } |
1865 | ||
fd79ecee DJ |
1866 | /* Fetch the target's memory map. */ |
1867 | ||
a664f67e | 1868 | std::vector<mem_region> |
fd79ecee DJ |
1869 | target_memory_map (void) |
1870 | { | |
328d42d8 SM |
1871 | target_ops *target = current_inferior ()->top_target (); |
1872 | std::vector<mem_region> result = target->memory_map (); | |
a664f67e SM |
1873 | if (result.empty ()) |
1874 | return result; | |
fd79ecee | 1875 | |
a664f67e | 1876 | std::sort (result.begin (), result.end ()); |
fd79ecee DJ |
1877 | |
1878 | /* Check that regions do not overlap. Simultaneously assign | |
1879 | a numbering for the "mem" commands to use to refer to | |
1880 | each region. */ | |
a664f67e SM |
1881 | mem_region *last_one = NULL; |
1882 | for (size_t ix = 0; ix < result.size (); ix++) | |
fd79ecee | 1883 | { |
a664f67e | 1884 | mem_region *this_one = &result[ix]; |
fd79ecee DJ |
1885 | this_one->number = ix; |
1886 | ||
a664f67e | 1887 | if (last_one != NULL && last_one->hi > this_one->lo) |
fd79ecee DJ |
1888 | { |
1889 | warning (_("Overlapping regions in memory map: ignoring")); | |
a664f67e | 1890 | return std::vector<mem_region> (); |
fd79ecee | 1891 | } |
a664f67e | 1892 | |
fd79ecee DJ |
1893 | last_one = this_one; |
1894 | } | |
1895 | ||
1896 | return result; | |
1897 | } | |
1898 | ||
a76d924d DJ |
1899 | void |
1900 | target_flash_erase (ULONGEST address, LONGEST length) | |
1901 | { | |
328d42d8 | 1902 | current_inferior ()->top_target ()->flash_erase (address, length); |
a76d924d DJ |
1903 | } |
1904 | ||
1905 | void | |
1906 | target_flash_done (void) | |
1907 | { | |
328d42d8 | 1908 | current_inferior ()->top_target ()->flash_done (); |
a76d924d DJ |
1909 | } |
1910 | ||
920d2a44 AC |
1911 | static void |
1912 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1913 | struct cmd_list_element *c, const char *value) | |
1914 | { | |
6cb06a8c TT |
1915 | gdb_printf (file, |
1916 | _("Mode for reading from readonly sections is %s.\n"), | |
1917 | value); | |
920d2a44 | 1918 | } |
3a11626d | 1919 | |
7f79c47e | 1920 | /* Target vector read/write partial wrapper functions. */ |
0088c768 | 1921 | |
9b409511 | 1922 | static enum target_xfer_status |
1e3ff5ad AC |
1923 | target_read_partial (struct target_ops *ops, |
1924 | enum target_object object, | |
1b0ba102 | 1925 | const char *annex, gdb_byte *buf, |
9b409511 YQ |
1926 | ULONGEST offset, ULONGEST len, |
1927 | ULONGEST *xfered_len) | |
1e3ff5ad | 1928 | { |
9b409511 YQ |
1929 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len, |
1930 | xfered_len); | |
1e3ff5ad AC |
1931 | } |
1932 | ||
8a55ffb0 | 1933 | static enum target_xfer_status |
1e3ff5ad AC |
1934 | target_write_partial (struct target_ops *ops, |
1935 | enum target_object object, | |
1b0ba102 | 1936 | const char *annex, const gdb_byte *buf, |
9b409511 | 1937 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len) |
1e3ff5ad | 1938 | { |
9b409511 YQ |
1939 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len, |
1940 | xfered_len); | |
1e3ff5ad AC |
1941 | } |
1942 | ||
1943 | /* Wrappers to perform the full transfer. */ | |
7f79c47e DE |
1944 | |
1945 | /* For docs on target_read see target.h. */ | |
1946 | ||
1e3ff5ad AC |
1947 | LONGEST |
1948 | target_read (struct target_ops *ops, | |
1949 | enum target_object object, | |
1b0ba102 | 1950 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1951 | ULONGEST offset, LONGEST len) |
1952 | { | |
279a6fed | 1953 | LONGEST xfered_total = 0; |
d309493c SM |
1954 | int unit_size = 1; |
1955 | ||
1956 | /* If we are reading from a memory object, find the length of an addressable | |
1957 | unit for that architecture. */ | |
1958 | if (object == TARGET_OBJECT_MEMORY | |
1959 | || object == TARGET_OBJECT_STACK_MEMORY | |
1960 | || object == TARGET_OBJECT_CODE_MEMORY | |
1961 | || object == TARGET_OBJECT_RAW_MEMORY) | |
99d9c3b9 SM |
1962 | unit_size = gdbarch_addressable_memory_unit_size |
1963 | (current_inferior ()->arch ()); | |
5d502164 | 1964 | |
279a6fed | 1965 | while (xfered_total < len) |
1e3ff5ad | 1966 | { |
279a6fed | 1967 | ULONGEST xfered_partial; |
9b409511 YQ |
1968 | enum target_xfer_status status; |
1969 | ||
1970 | status = target_read_partial (ops, object, annex, | |
d309493c | 1971 | buf + xfered_total * unit_size, |
279a6fed SM |
1972 | offset + xfered_total, len - xfered_total, |
1973 | &xfered_partial); | |
5d502164 | 1974 | |
1e3ff5ad | 1975 | /* Call an observer, notifying them of the xfer progress? */ |
9b409511 | 1976 | if (status == TARGET_XFER_EOF) |
279a6fed | 1977 | return xfered_total; |
9b409511 YQ |
1978 | else if (status == TARGET_XFER_OK) |
1979 | { | |
279a6fed | 1980 | xfered_total += xfered_partial; |
9b409511 YQ |
1981 | QUIT; |
1982 | } | |
1983 | else | |
279a6fed | 1984 | return TARGET_XFER_E_IO; |
9b409511 | 1985 | |
1e3ff5ad AC |
1986 | } |
1987 | return len; | |
1988 | } | |
1989 | ||
f1a507a1 JB |
1990 | /* Assuming that the entire [begin, end) range of memory cannot be |
1991 | read, try to read whatever subrange is possible to read. | |
1992 | ||
1993 | The function returns, in RESULT, either zero or one memory block. | |
1994 | If there's a readable subrange at the beginning, it is completely | |
1995 | read and returned. Any further readable subrange will not be read. | |
1996 | Otherwise, if there's a readable subrange at the end, it will be | |
1997 | completely read and returned. Any readable subranges before it | |
1998 | (obviously, not starting at the beginning), will be ignored. In | |
1999 | other cases -- either no readable subrange, or readable subrange(s) | |
2000 | that is neither at the beginning, or end, nothing is returned. | |
2001 | ||
2002 | The purpose of this function is to handle a read across a boundary | |
2003 | of accessible memory in a case when memory map is not available. | |
2004 | The above restrictions are fine for this case, but will give | |
2005 | incorrect results if the memory is 'patchy'. However, supporting | |
2006 | 'patchy' memory would require trying to read every single byte, | |
2007 | and it seems unacceptable solution. Explicit memory map is | |
2008 | recommended for this case -- and target_read_memory_robust will | |
2009 | take care of reading multiple ranges then. */ | |
8dedea02 VP |
2010 | |
2011 | static void | |
3e43a32a | 2012 | read_whatever_is_readable (struct target_ops *ops, |
279a6fed | 2013 | const ULONGEST begin, const ULONGEST end, |
d309493c | 2014 | int unit_size, |
386c8614 | 2015 | std::vector<memory_read_result> *result) |
d5086790 | 2016 | { |
8dedea02 VP |
2017 | ULONGEST current_begin = begin; |
2018 | ULONGEST current_end = end; | |
2019 | int forward; | |
9b409511 | 2020 | ULONGEST xfered_len; |
8dedea02 VP |
2021 | |
2022 | /* If we previously failed to read 1 byte, nothing can be done here. */ | |
2023 | if (end - begin <= 1) | |
386c8614 TT |
2024 | return; |
2025 | ||
2026 | gdb::unique_xmalloc_ptr<gdb_byte> buf ((gdb_byte *) xmalloc (end - begin)); | |
8dedea02 VP |
2027 | |
2028 | /* Check that either first or the last byte is readable, and give up | |
c378eb4e | 2029 | if not. This heuristic is meant to permit reading accessible memory |
8dedea02 VP |
2030 | at the boundary of accessible region. */ |
2031 | if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
386c8614 | 2032 | buf.get (), begin, 1, &xfered_len) == TARGET_XFER_OK) |
8dedea02 VP |
2033 | { |
2034 | forward = 1; | |
2035 | ++current_begin; | |
2036 | } | |
2037 | else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
386c8614 | 2038 | buf.get () + (end - begin) - 1, end - 1, 1, |
9b409511 | 2039 | &xfered_len) == TARGET_XFER_OK) |
8dedea02 VP |
2040 | { |
2041 | forward = 0; | |
2042 | --current_end; | |
2043 | } | |
2044 | else | |
386c8614 | 2045 | return; |
8dedea02 VP |
2046 | |
2047 | /* Loop invariant is that the [current_begin, current_end) was previously | |
2048 | found to be not readable as a whole. | |
2049 | ||
2050 | Note loop condition -- if the range has 1 byte, we can't divide the range | |
2051 | so there's no point trying further. */ | |
2052 | while (current_end - current_begin > 1) | |
2053 | { | |
2054 | ULONGEST first_half_begin, first_half_end; | |
2055 | ULONGEST second_half_begin, second_half_end; | |
2056 | LONGEST xfer; | |
279a6fed | 2057 | ULONGEST middle = current_begin + (current_end - current_begin) / 2; |
f1a507a1 | 2058 | |
8dedea02 VP |
2059 | if (forward) |
2060 | { | |
2061 | first_half_begin = current_begin; | |
2062 | first_half_end = middle; | |
2063 | second_half_begin = middle; | |
2064 | second_half_end = current_end; | |
2065 | } | |
2066 | else | |
2067 | { | |
2068 | first_half_begin = middle; | |
2069 | first_half_end = current_end; | |
2070 | second_half_begin = current_begin; | |
2071 | second_half_end = middle; | |
2072 | } | |
2073 | ||
2074 | xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
386c8614 | 2075 | buf.get () + (first_half_begin - begin) * unit_size, |
8dedea02 VP |
2076 | first_half_begin, |
2077 | first_half_end - first_half_begin); | |
2078 | ||
2079 | if (xfer == first_half_end - first_half_begin) | |
2080 | { | |
c378eb4e | 2081 | /* This half reads up fine. So, the error must be in the |
3e43a32a | 2082 | other half. */ |
8dedea02 VP |
2083 | current_begin = second_half_begin; |
2084 | current_end = second_half_end; | |
2085 | } | |
2086 | else | |
2087 | { | |
c378eb4e | 2088 | /* This half is not readable. Because we've tried one byte, we |
279a6fed | 2089 | know some part of this half if actually readable. Go to the next |
8dedea02 VP |
2090 | iteration to divide again and try to read. |
2091 | ||
2092 | We don't handle the other half, because this function only tries | |
2093 | to read a single readable subrange. */ | |
2094 | current_begin = first_half_begin; | |
2095 | current_end = first_half_end; | |
2096 | } | |
2097 | } | |
2098 | ||
2099 | if (forward) | |
2100 | { | |
2101 | /* The [begin, current_begin) range has been read. */ | |
386c8614 | 2102 | result->emplace_back (begin, current_end, std::move (buf)); |
8dedea02 VP |
2103 | } |
2104 | else | |
2105 | { | |
2106 | /* The [current_end, end) range has been read. */ | |
279a6fed | 2107 | LONGEST region_len = end - current_end; |
f1a507a1 | 2108 | |
386c8614 TT |
2109 | gdb::unique_xmalloc_ptr<gdb_byte> data |
2110 | ((gdb_byte *) xmalloc (region_len * unit_size)); | |
2111 | memcpy (data.get (), buf.get () + (current_end - begin) * unit_size, | |
d309493c | 2112 | region_len * unit_size); |
386c8614 | 2113 | result->emplace_back (current_end, end, std::move (data)); |
8dedea02 | 2114 | } |
8dedea02 VP |
2115 | } |
2116 | ||
386c8614 | 2117 | std::vector<memory_read_result> |
279a6fed SM |
2118 | read_memory_robust (struct target_ops *ops, |
2119 | const ULONGEST offset, const LONGEST len) | |
8dedea02 | 2120 | { |
386c8614 | 2121 | std::vector<memory_read_result> result; |
99d9c3b9 SM |
2122 | int unit_size |
2123 | = gdbarch_addressable_memory_unit_size (current_inferior ()->arch ()); | |
8dedea02 | 2124 | |
279a6fed SM |
2125 | LONGEST xfered_total = 0; |
2126 | while (xfered_total < len) | |
d5086790 | 2127 | { |
279a6fed SM |
2128 | struct mem_region *region = lookup_mem_region (offset + xfered_total); |
2129 | LONGEST region_len; | |
5d502164 | 2130 | |
8dedea02 VP |
2131 | /* If there is no explicit region, a fake one should be created. */ |
2132 | gdb_assert (region); | |
2133 | ||
2134 | if (region->hi == 0) | |
279a6fed | 2135 | region_len = len - xfered_total; |
8dedea02 | 2136 | else |
279a6fed | 2137 | region_len = region->hi - offset; |
8dedea02 VP |
2138 | |
2139 | if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO) | |
d5086790 | 2140 | { |
c378eb4e | 2141 | /* Cannot read this region. Note that we can end up here only |
8dedea02 VP |
2142 | if the region is explicitly marked inaccessible, or |
2143 | 'inaccessible-by-default' is in effect. */ | |
279a6fed | 2144 | xfered_total += region_len; |
8dedea02 VP |
2145 | } |
2146 | else | |
2147 | { | |
325fac50 | 2148 | LONGEST to_read = std::min (len - xfered_total, region_len); |
386c8614 TT |
2149 | gdb::unique_xmalloc_ptr<gdb_byte> buffer |
2150 | ((gdb_byte *) xmalloc (to_read * unit_size)); | |
8dedea02 | 2151 | |
279a6fed | 2152 | LONGEST xfered_partial = |
386c8614 | 2153 | target_read (ops, TARGET_OBJECT_MEMORY, NULL, buffer.get (), |
279a6fed | 2154 | offset + xfered_total, to_read); |
8dedea02 | 2155 | /* Call an observer, notifying them of the xfer progress? */ |
279a6fed | 2156 | if (xfered_partial <= 0) |
d5086790 | 2157 | { |
c378eb4e | 2158 | /* Got an error reading full chunk. See if maybe we can read |
8dedea02 | 2159 | some subrange. */ |
e084c964 DB |
2160 | read_whatever_is_readable (ops, offset + xfered_total, |
2161 | offset + xfered_total + to_read, | |
2162 | unit_size, &result); | |
279a6fed | 2163 | xfered_total += to_read; |
d5086790 | 2164 | } |
8dedea02 VP |
2165 | else |
2166 | { | |
386c8614 TT |
2167 | result.emplace_back (offset + xfered_total, |
2168 | offset + xfered_total + xfered_partial, | |
2169 | std::move (buffer)); | |
279a6fed | 2170 | xfered_total += xfered_partial; |
8dedea02 VP |
2171 | } |
2172 | QUIT; | |
d5086790 | 2173 | } |
d5086790 | 2174 | } |
9d78f827 | 2175 | |
8dedea02 | 2176 | return result; |
d5086790 VP |
2177 | } |
2178 | ||
8dedea02 | 2179 | |
cf7a04e8 DJ |
2180 | /* An alternative to target_write with progress callbacks. */ |
2181 | ||
1e3ff5ad | 2182 | LONGEST |
cf7a04e8 DJ |
2183 | target_write_with_progress (struct target_ops *ops, |
2184 | enum target_object object, | |
2185 | const char *annex, const gdb_byte *buf, | |
2186 | ULONGEST offset, LONGEST len, | |
2187 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad | 2188 | { |
279a6fed | 2189 | LONGEST xfered_total = 0; |
d309493c SM |
2190 | int unit_size = 1; |
2191 | ||
2192 | /* If we are writing to a memory object, find the length of an addressable | |
2193 | unit for that architecture. */ | |
2194 | if (object == TARGET_OBJECT_MEMORY | |
2195 | || object == TARGET_OBJECT_STACK_MEMORY | |
2196 | || object == TARGET_OBJECT_CODE_MEMORY | |
2197 | || object == TARGET_OBJECT_RAW_MEMORY) | |
99d9c3b9 SM |
2198 | unit_size = gdbarch_addressable_memory_unit_size |
2199 | (current_inferior ()->arch ()); | |
a76d924d DJ |
2200 | |
2201 | /* Give the progress callback a chance to set up. */ | |
2202 | if (progress) | |
2203 | (*progress) (0, baton); | |
2204 | ||
279a6fed | 2205 | while (xfered_total < len) |
1e3ff5ad | 2206 | { |
279a6fed | 2207 | ULONGEST xfered_partial; |
9b409511 YQ |
2208 | enum target_xfer_status status; |
2209 | ||
2210 | status = target_write_partial (ops, object, annex, | |
d309493c | 2211 | buf + xfered_total * unit_size, |
279a6fed SM |
2212 | offset + xfered_total, len - xfered_total, |
2213 | &xfered_partial); | |
cf7a04e8 | 2214 | |
5c328c05 | 2215 | if (status != TARGET_XFER_OK) |
279a6fed | 2216 | return status == TARGET_XFER_EOF ? xfered_total : TARGET_XFER_E_IO; |
cf7a04e8 DJ |
2217 | |
2218 | if (progress) | |
279a6fed | 2219 | (*progress) (xfered_partial, baton); |
cf7a04e8 | 2220 | |
279a6fed | 2221 | xfered_total += xfered_partial; |
1e3ff5ad AC |
2222 | QUIT; |
2223 | } | |
2224 | return len; | |
2225 | } | |
2226 | ||
7f79c47e DE |
2227 | /* For docs on target_write see target.h. */ |
2228 | ||
cf7a04e8 DJ |
2229 | LONGEST |
2230 | target_write (struct target_ops *ops, | |
2231 | enum target_object object, | |
2232 | const char *annex, const gdb_byte *buf, | |
2233 | ULONGEST offset, LONGEST len) | |
2234 | { | |
2235 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
2236 | NULL, NULL); | |
2237 | } | |
2238 | ||
9018be22 SM |
2239 | /* Help for target_read_alloc and target_read_stralloc. See their comments |
2240 | for details. */ | |
13547ab6 | 2241 | |
9018be22 | 2242 | template <typename T> |
6b09f134 | 2243 | std::optional<gdb::def_vector<T>> |
159f81f3 | 2244 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, |
9018be22 | 2245 | const char *annex) |
13547ab6 | 2246 | { |
9018be22 SM |
2247 | gdb::def_vector<T> buf; |
2248 | size_t buf_pos = 0; | |
2249 | const int chunk = 4096; | |
13547ab6 DJ |
2250 | |
2251 | /* This function does not have a length parameter; it reads the | |
2252 | entire OBJECT). Also, it doesn't support objects fetched partly | |
2253 | from one target and partly from another (in a different stratum, | |
2254 | e.g. a core file and an executable). Both reasons make it | |
2255 | unsuitable for reading memory. */ | |
2256 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
2257 | ||
2258 | /* Start by reading up to 4K at a time. The target will throttle | |
2259 | this number down if necessary. */ | |
13547ab6 DJ |
2260 | while (1) |
2261 | { | |
9b409511 YQ |
2262 | ULONGEST xfered_len; |
2263 | enum target_xfer_status status; | |
2264 | ||
9018be22 SM |
2265 | buf.resize (buf_pos + chunk); |
2266 | ||
2267 | status = target_read_partial (ops, object, annex, | |
2268 | (gdb_byte *) &buf[buf_pos], | |
2269 | buf_pos, chunk, | |
9b409511 YQ |
2270 | &xfered_len); |
2271 | ||
2272 | if (status == TARGET_XFER_EOF) | |
13547ab6 DJ |
2273 | { |
2274 | /* Read all there was. */ | |
9018be22 SM |
2275 | buf.resize (buf_pos); |
2276 | return buf; | |
13547ab6 | 2277 | } |
9b409511 YQ |
2278 | else if (status != TARGET_XFER_OK) |
2279 | { | |
2280 | /* An error occurred. */ | |
9018be22 | 2281 | return {}; |
9b409511 | 2282 | } |
13547ab6 | 2283 | |
9b409511 | 2284 | buf_pos += xfered_len; |
13547ab6 | 2285 | |
13547ab6 DJ |
2286 | QUIT; |
2287 | } | |
2288 | } | |
2289 | ||
9018be22 | 2290 | /* See target.h */ |
159f81f3 | 2291 | |
6b09f134 | 2292 | std::optional<gdb::byte_vector> |
159f81f3 | 2293 | target_read_alloc (struct target_ops *ops, enum target_object object, |
9018be22 | 2294 | const char *annex) |
159f81f3 | 2295 | { |
9018be22 | 2296 | return target_read_alloc_1<gdb_byte> (ops, object, annex); |
159f81f3 DJ |
2297 | } |
2298 | ||
b7b030ad | 2299 | /* See target.h. */ |
159f81f3 | 2300 | |
6b09f134 | 2301 | std::optional<gdb::char_vector> |
159f81f3 DJ |
2302 | target_read_stralloc (struct target_ops *ops, enum target_object object, |
2303 | const char *annex) | |
2304 | { | |
6b09f134 | 2305 | std::optional<gdb::char_vector> buf |
9018be22 | 2306 | = target_read_alloc_1<char> (ops, object, annex); |
159f81f3 | 2307 | |
9018be22 SM |
2308 | if (!buf) |
2309 | return {}; | |
159f81f3 | 2310 | |
d00a27c5 | 2311 | if (buf->empty () || buf->back () != '\0') |
9018be22 | 2312 | buf->push_back ('\0'); |
7313baad UW |
2313 | |
2314 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
9018be22 SM |
2315 | for (auto it = std::find (buf->begin (), buf->end (), '\0'); |
2316 | it != buf->end (); it++) | |
2317 | if (*it != '\0') | |
7313baad UW |
2318 | { |
2319 | warning (_("target object %d, annex %s, " | |
2320 | "contained unexpected null characters"), | |
2321 | (int) object, annex ? annex : "(none)"); | |
2322 | break; | |
2323 | } | |
159f81f3 | 2324 | |
9018be22 | 2325 | return buf; |
159f81f3 DJ |
2326 | } |
2327 | ||
b6591e8b AC |
2328 | /* Memory transfer methods. */ |
2329 | ||
2330 | void | |
1b0ba102 | 2331 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
2332 | LONGEST len) |
2333 | { | |
07b82ea5 PA |
2334 | /* This method is used to read from an alternate, non-current |
2335 | target. This read must bypass the overlay support (as symbols | |
2336 | don't match this target), and GDB's internal cache (wrong cache | |
2337 | for this target). */ | |
2338 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) | |
b6591e8b | 2339 | != len) |
578d3588 | 2340 | memory_error (TARGET_XFER_E_IO, addr); |
b6591e8b AC |
2341 | } |
2342 | ||
2343 | ULONGEST | |
5d502164 MS |
2344 | get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr, |
2345 | int len, enum bfd_endian byte_order) | |
b6591e8b | 2346 | { |
f6519ebc | 2347 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
2348 | |
2349 | gdb_assert (len <= sizeof (buf)); | |
2350 | get_target_memory (ops, addr, buf, len); | |
e17a4113 | 2351 | return extract_unsigned_integer (buf, len, byte_order); |
b6591e8b AC |
2352 | } |
2353 | ||
3db08215 MM |
2354 | /* See target.h. */ |
2355 | ||
d914c394 SS |
2356 | int |
2357 | target_insert_breakpoint (struct gdbarch *gdbarch, | |
2358 | struct bp_target_info *bp_tgt) | |
2359 | { | |
2360 | if (!may_insert_breakpoints) | |
2361 | { | |
2362 | warning (_("May not insert breakpoints")); | |
2363 | return 1; | |
2364 | } | |
2365 | ||
328d42d8 SM |
2366 | target_ops *target = current_inferior ()->top_target (); |
2367 | ||
2368 | return target->insert_breakpoint (gdbarch, bp_tgt); | |
d914c394 SS |
2369 | } |
2370 | ||
3db08215 MM |
2371 | /* See target.h. */ |
2372 | ||
d914c394 | 2373 | int |
6b84065d | 2374 | target_remove_breakpoint (struct gdbarch *gdbarch, |
73971819 PA |
2375 | struct bp_target_info *bp_tgt, |
2376 | enum remove_bp_reason reason) | |
d914c394 SS |
2377 | { |
2378 | /* This is kind of a weird case to handle, but the permission might | |
2379 | have been changed after breakpoints were inserted - in which case | |
2380 | we should just take the user literally and assume that any | |
2381 | breakpoints should be left in place. */ | |
2382 | if (!may_insert_breakpoints) | |
2383 | { | |
2384 | warning (_("May not remove breakpoints")); | |
2385 | return 1; | |
2386 | } | |
2387 | ||
328d42d8 SM |
2388 | target_ops *target = current_inferior ()->top_target (); |
2389 | ||
2390 | return target->remove_breakpoint (gdbarch, bp_tgt, reason); | |
d914c394 SS |
2391 | } |
2392 | ||
c906108c | 2393 | static void |
1d12d88f | 2394 | info_target_command (const char *args, int from_tty) |
c906108c | 2395 | { |
c906108c | 2396 | int has_all_mem = 0; |
c5aa993b | 2397 | |
a42d7dd8 TT |
2398 | if (current_program_space->symfile_object_file != NULL) |
2399 | { | |
2400 | objfile *objf = current_program_space->symfile_object_file; | |
5260dcf0 AB |
2401 | gdb_printf (_("Symbols from \"%ps\".\n"), |
2402 | styled_string (file_name_style.style (), | |
2403 | objfile_name (objf))); | |
a42d7dd8 | 2404 | } |
c906108c | 2405 | |
328d42d8 SM |
2406 | for (target_ops *t = current_inferior ()->top_target (); |
2407 | t != NULL; | |
2408 | t = t->beneath ()) | |
c906108c | 2409 | { |
f6ac5f3d | 2410 | if (!t->has_memory ()) |
c906108c SS |
2411 | continue; |
2412 | ||
66b4deae | 2413 | if ((int) (t->stratum ()) <= (int) dummy_stratum) |
c906108c SS |
2414 | continue; |
2415 | if (has_all_mem) | |
6cb06a8c TT |
2416 | gdb_printf (_("\tWhile running this, " |
2417 | "GDB does not access memory from...\n")); | |
2418 | gdb_printf ("%s:\n", t->longname ()); | |
f6ac5f3d PA |
2419 | t->files_info (); |
2420 | has_all_mem = t->has_all_memory (); | |
c906108c SS |
2421 | } |
2422 | } | |
2423 | ||
fd79ecee DJ |
2424 | /* This function is called before any new inferior is created, e.g. |
2425 | by running a program, attaching, or connecting to a target. | |
2426 | It cleans up any state from previous invocations which might | |
2427 | change between runs. This is a subset of what target_preopen | |
2428 | resets (things which might change between targets). */ | |
2429 | ||
2430 | void | |
2431 | target_pre_inferior (int from_tty) | |
2432 | { | |
c378eb4e | 2433 | /* Clear out solib state. Otherwise the solib state of the previous |
b9db4ced | 2434 | inferior might have survived and is entirely wrong for the new |
c378eb4e | 2435 | target. This has been observed on GNU/Linux using glibc 2.3. How |
b9db4ced UW |
2436 | to reproduce: |
2437 | ||
2438 | bash$ ./foo& | |
2439 | [1] 4711 | |
2440 | bash$ ./foo& | |
2441 | [1] 4712 | |
2442 | bash$ gdb ./foo | |
2443 | [...] | |
2444 | (gdb) attach 4711 | |
2445 | (gdb) detach | |
2446 | (gdb) attach 4712 | |
2447 | Cannot access memory at address 0xdeadbeef | |
2448 | */ | |
b9db4ced | 2449 | |
50c71eaf PA |
2450 | /* In some OSs, the shared library list is the same/global/shared |
2451 | across inferiors. If code is shared between processes, so are | |
2452 | memory regions and features. */ | |
99d9c3b9 | 2453 | if (!gdbarch_has_global_solist (current_inferior ()->arch ())) |
50c71eaf PA |
2454 | { |
2455 | no_shared_libraries (NULL, from_tty); | |
2456 | ||
2457 | invalidate_target_mem_regions (); | |
424163ea | 2458 | |
50c71eaf PA |
2459 | target_clear_description (); |
2460 | } | |
8ffcbaaf | 2461 | |
e9756d52 PP |
2462 | /* attach_flag may be set if the previous process associated with |
2463 | the inferior was attached to. */ | |
30220b46 | 2464 | current_inferior ()->attach_flag = false; |
e9756d52 | 2465 | |
5d5658a1 PA |
2466 | current_inferior ()->highest_thread_num = 0; |
2467 | ||
a81871f7 PA |
2468 | update_previous_thread (); |
2469 | ||
8ffcbaaf | 2470 | agent_capability_invalidate (); |
fd79ecee DJ |
2471 | } |
2472 | ||
c906108c SS |
2473 | /* This is to be called by the open routine before it does |
2474 | anything. */ | |
2475 | ||
2476 | void | |
fba45db2 | 2477 | target_preopen (int from_tty) |
c906108c | 2478 | { |
c5aa993b | 2479 | dont_repeat (); |
c906108c | 2480 | |
5b6d1e4f | 2481 | if (current_inferior ()->pid != 0) |
c5aa993b | 2482 | { |
adf40b2e | 2483 | if (!from_tty |
55f6301a | 2484 | || !target_has_execution () |
b8fa0bfa | 2485 | || query (_("A program is being debugged already. Kill it? "))) |
5b6d1e4f PA |
2486 | { |
2487 | /* Core inferiors actually should be detached, not | |
2488 | killed. */ | |
55f6301a | 2489 | if (target_has_execution ()) |
5b6d1e4f PA |
2490 | target_kill (); |
2491 | else | |
2492 | target_detach (current_inferior (), 0); | |
2493 | } | |
c906108c | 2494 | else |
8a3fe4f8 | 2495 | error (_("Program not killed.")); |
c906108c SS |
2496 | } |
2497 | ||
a81871f7 PA |
2498 | /* Release reference to old previous thread. */ |
2499 | update_previous_thread (); | |
2500 | ||
c906108c SS |
2501 | /* Calling target_kill may remove the target from the stack. But if |
2502 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
2503 | /* Leave the exec target, though. The user may be switching from a |
2504 | live process to a core of the same program. */ | |
c8181f70 | 2505 | current_inferior ()->pop_all_targets_above (file_stratum); |
fd79ecee DJ |
2506 | |
2507 | target_pre_inferior (from_tty); | |
c906108c SS |
2508 | } |
2509 | ||
6bd6f3b6 | 2510 | /* See target.h. */ |
c906108c SS |
2511 | |
2512 | void | |
6e1e1966 | 2513 | target_detach (inferior *inf, int from_tty) |
c906108c | 2514 | { |
ddff2a2d AB |
2515 | /* Thread's don't need to be resumed until the end of this function. */ |
2516 | scoped_disable_commit_resumed disable_commit_resumed ("detaching"); | |
2517 | ||
5783e150 PW |
2518 | /* After we have detached, we will clear the register cache for this inferior |
2519 | by calling registers_changed_ptid. We must save the pid_ptid before | |
2520 | detaching, as the target detach method will clear inf->pid. */ | |
2521 | ptid_t save_pid_ptid = ptid_t (inf->pid); | |
2522 | ||
6e1e1966 | 2523 | /* As long as some to_detach implementations rely on the current_inferior |
99d9c3b9 SM |
2524 | (either directly, or indirectly, like through reading memory), INF needs |
2525 | to be the current inferior. When that requirement will become no longer | |
2526 | true, then we can remove this assertion. */ | |
6e1e1966 SM |
2527 | gdb_assert (inf == current_inferior ()); |
2528 | ||
24291992 PA |
2529 | prepare_for_detach (); |
2530 | ||
9056c917 SM |
2531 | gdb::observers::inferior_pre_detach.notify (inf); |
2532 | ||
5b6d1e4f PA |
2533 | /* Hold a strong reference because detaching may unpush the |
2534 | target. */ | |
2535 | auto proc_target_ref = target_ops_ref::new_reference (inf->process_target ()); | |
2536 | ||
328d42d8 | 2537 | current_inferior ()->top_target ()->detach (inf, from_tty); |
799efbe8 | 2538 | |
5b6d1e4f PA |
2539 | process_stratum_target *proc_target |
2540 | = as_process_stratum_target (proc_target_ref.get ()); | |
2541 | ||
2542 | registers_changed_ptid (proc_target, save_pid_ptid); | |
799efbe8 PW |
2543 | |
2544 | /* We have to ensure we have no frame cache left. Normally, | |
5783e150 PW |
2545 | registers_changed_ptid (save_pid_ptid) calls reinit_frame_cache when |
2546 | inferior_ptid matches save_pid_ptid, but in our case, it does not | |
799efbe8 PW |
2547 | call it, as inferior_ptid has been reset. */ |
2548 | reinit_frame_cache (); | |
ddff2a2d AB |
2549 | |
2550 | disable_commit_resumed.reset_and_commit (); | |
c906108c SS |
2551 | } |
2552 | ||
6ad8ae5c | 2553 | void |
fee354ee | 2554 | target_disconnect (const char *args, int from_tty) |
6ad8ae5c | 2555 | { |
50c71eaf PA |
2556 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
2557 | are global across processes, we have to remove them before | |
2558 | disconnecting. */ | |
74960c60 VP |
2559 | remove_breakpoints (); |
2560 | ||
328d42d8 | 2561 | current_inferior ()->top_target ()->disconnect (args, from_tty); |
6ad8ae5c DJ |
2562 | } |
2563 | ||
f2b9e3df SDJ |
2564 | /* See target/target.h. */ |
2565 | ||
117de6a9 | 2566 | ptid_t |
b60cea74 TT |
2567 | target_wait (ptid_t ptid, struct target_waitstatus *status, |
2568 | target_wait_flags options) | |
117de6a9 | 2569 | { |
328d42d8 | 2570 | target_ops *target = current_inferior ()->top_target (); |
1192f124 SM |
2571 | process_stratum_target *proc_target = current_inferior ()->process_target (); |
2572 | ||
2573 | gdb_assert (!proc_target->commit_resumed_state); | |
d3a07122 | 2574 | |
0c1e6e26 | 2575 | if (!target_can_async_p (target)) |
d3a07122 SM |
2576 | gdb_assert ((options & TARGET_WNOHANG) == 0); |
2577 | ||
fb85cece PM |
2578 | try |
2579 | { | |
2580 | gdb::observers::target_pre_wait.notify (ptid); | |
2581 | ptid_t event_ptid = target->wait (ptid, status, options); | |
2582 | gdb::observers::target_post_wait.notify (event_ptid); | |
2583 | return event_ptid; | |
2584 | } | |
2585 | catch (...) | |
2586 | { | |
2587 | gdb::observers::target_post_wait.notify (null_ptid); | |
2588 | throw; | |
2589 | } | |
117de6a9 PA |
2590 | } |
2591 | ||
0b333c5e PA |
2592 | /* See target.h. */ |
2593 | ||
2594 | ptid_t | |
2595 | default_target_wait (struct target_ops *ops, | |
2596 | ptid_t ptid, struct target_waitstatus *status, | |
b60cea74 | 2597 | target_wait_flags options) |
0b333c5e | 2598 | { |
183be222 | 2599 | status->set_ignore (); |
0b333c5e PA |
2600 | return minus_one_ptid; |
2601 | } | |
2602 | ||
a068643d | 2603 | std::string |
117de6a9 PA |
2604 | target_pid_to_str (ptid_t ptid) |
2605 | { | |
328d42d8 | 2606 | return current_inferior ()->top_target ()->pid_to_str (ptid); |
117de6a9 PA |
2607 | } |
2608 | ||
73ede765 | 2609 | const char * |
4694da01 TT |
2610 | target_thread_name (struct thread_info *info) |
2611 | { | |
5b6d1e4f PA |
2612 | gdb_assert (info->inf == current_inferior ()); |
2613 | ||
328d42d8 | 2614 | return current_inferior ()->top_target ()->thread_name (info); |
4694da01 TT |
2615 | } |
2616 | ||
e04ee09e KB |
2617 | struct thread_info * |
2618 | target_thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
2619 | int handle_len, | |
2620 | struct inferior *inf) | |
2621 | { | |
328d42d8 SM |
2622 | target_ops *target = current_inferior ()->top_target (); |
2623 | ||
2624 | return target->thread_handle_to_thread_info (thread_handle, handle_len, inf); | |
e04ee09e KB |
2625 | } |
2626 | ||
3d6c6204 KB |
2627 | /* See target.h. */ |
2628 | ||
1f08d324 | 2629 | gdb::array_view<const gdb_byte> |
3d6c6204 KB |
2630 | target_thread_info_to_thread_handle (struct thread_info *tip) |
2631 | { | |
328d42d8 SM |
2632 | target_ops *target = current_inferior ()->top_target (); |
2633 | ||
2634 | return target->thread_info_to_thread_handle (tip); | |
3d6c6204 KB |
2635 | } |
2636 | ||
e1ac3328 | 2637 | void |
d51926f0 | 2638 | target_resume (ptid_t scope_ptid, int step, enum gdb_signal signal) |
e1ac3328 | 2639 | { |
5b6d1e4f | 2640 | process_stratum_target *curr_target = current_inferior ()->process_target (); |
1192f124 | 2641 | gdb_assert (!curr_target->commit_resumed_state); |
5b6d1e4f | 2642 | |
d51926f0 PA |
2643 | gdb_assert (inferior_ptid != null_ptid); |
2644 | gdb_assert (inferior_ptid.matches (scope_ptid)); | |
2645 | ||
41336620 | 2646 | target_dcache_invalidate (current_program_space->aspace); |
28439f5e | 2647 | |
d51926f0 | 2648 | current_inferior ()->top_target ()->resume (scope_ptid, step, signal); |
28439f5e | 2649 | |
d51926f0 | 2650 | registers_changed_ptid (curr_target, scope_ptid); |
251bde03 | 2651 | /* We only set the internal executing state here. The user/frontend |
f2ffa92b PA |
2652 | running state is set at a higher level. This also clears the |
2653 | thread's stop_pc as side effect. */ | |
d51926f0 PA |
2654 | set_executing (curr_target, scope_ptid, true); |
2655 | clear_inline_frame_state (curr_target, scope_ptid); | |
38ba82db JB |
2656 | |
2657 | if (target_can_async_p ()) | |
4a570176 | 2658 | target_async (true); |
e1ac3328 | 2659 | } |
2455069d | 2660 | |
85ad3aaf PA |
2661 | /* See target.h. */ |
2662 | ||
2663 | void | |
1192f124 | 2664 | target_commit_resumed () |
85ad3aaf | 2665 | { |
1192f124 SM |
2666 | gdb_assert (current_inferior ()->process_target ()->commit_resumed_state); |
2667 | current_inferior ()->top_target ()->commit_resumed (); | |
85ad3aaf PA |
2668 | } |
2669 | ||
b4b1a226 SM |
2670 | /* See target.h. */ |
2671 | ||
2672 | bool | |
2673 | target_has_pending_events () | |
2674 | { | |
2675 | return current_inferior ()->top_target ()->has_pending_events (); | |
2676 | } | |
2677 | ||
2455069d | 2678 | void |
adc6a863 | 2679 | target_pass_signals (gdb::array_view<const unsigned char> pass_signals) |
2455069d | 2680 | { |
328d42d8 | 2681 | current_inferior ()->top_target ()->pass_signals (pass_signals); |
2455069d UW |
2682 | } |
2683 | ||
9b224c5e | 2684 | void |
adc6a863 | 2685 | target_program_signals (gdb::array_view<const unsigned char> program_signals) |
9b224c5e | 2686 | { |
328d42d8 | 2687 | current_inferior ()->top_target ()->program_signals (program_signals); |
9b224c5e PA |
2688 | } |
2689 | ||
e97007b6 | 2690 | static void |
82d1f134 SM |
2691 | default_follow_fork (struct target_ops *self, inferior *child_inf, |
2692 | ptid_t child_ptid, target_waitkind fork_kind, | |
2693 | bool follow_child, bool detach_fork) | |
098dba18 TT |
2694 | { |
2695 | /* Some target returned a fork event, but did not know how to follow it. */ | |
f34652de | 2696 | internal_error (_("could not find a target to follow fork")); |
098dba18 TT |
2697 | } |
2698 | ||
0d36baa9 PA |
2699 | static void |
2700 | default_follow_clone (struct target_ops *self, ptid_t child_ptid) | |
2701 | { | |
2702 | /* Some target returned a clone event, but did not know how to follow it. */ | |
2703 | internal_error (_("could not find a target to follow clone")); | |
2704 | } | |
2705 | ||
e97007b6 | 2706 | /* See target.h. */ |
ee057212 | 2707 | |
e97007b6 | 2708 | void |
82d1f134 SM |
2709 | target_follow_fork (inferior *child_inf, ptid_t child_ptid, |
2710 | target_waitkind fork_kind, bool follow_child, | |
2711 | bool detach_fork) | |
ee057212 | 2712 | { |
328d42d8 SM |
2713 | target_ops *target = current_inferior ()->top_target (); |
2714 | ||
82d1f134 SM |
2715 | /* Check consistency between CHILD_INF, CHILD_PTID, FOLLOW_CHILD and |
2716 | DETACH_FORK. */ | |
2717 | if (child_inf != nullptr) | |
2718 | { | |
2719 | gdb_assert (follow_child || !detach_fork); | |
2720 | gdb_assert (child_inf->pid == child_ptid.pid ()); | |
2721 | } | |
2722 | else | |
2723 | gdb_assert (!follow_child && detach_fork); | |
2724 | ||
2725 | return target->follow_fork (child_inf, child_ptid, fork_kind, follow_child, | |
2726 | detach_fork); | |
ee057212 DJ |
2727 | } |
2728 | ||
294c36eb | 2729 | /* See target.h. */ |
94585166 DB |
2730 | |
2731 | void | |
294c36eb SM |
2732 | target_follow_exec (inferior *follow_inf, ptid_t ptid, |
2733 | const char *execd_pathname) | |
94585166 | 2734 | { |
294c36eb SM |
2735 | current_inferior ()->top_target ()->follow_exec (follow_inf, ptid, |
2736 | execd_pathname); | |
94585166 DB |
2737 | } |
2738 | ||
8d657035 TT |
2739 | static void |
2740 | default_mourn_inferior (struct target_ops *self) | |
2741 | { | |
f34652de | 2742 | internal_error (_("could not find a target to follow mourn inferior")); |
8d657035 TT |
2743 | } |
2744 | ||
136d6dae | 2745 | void |
bc1e6c81 | 2746 | target_mourn_inferior (ptid_t ptid) |
136d6dae | 2747 | { |
dffdd8b5 | 2748 | gdb_assert (ptid.pid () == inferior_ptid.pid ()); |
328d42d8 | 2749 | current_inferior ()->top_target ()->mourn_inferior (); |
136d6dae VP |
2750 | } |
2751 | ||
424163ea DJ |
2752 | /* Look for a target which can describe architectural features, starting |
2753 | from TARGET. If we find one, return its description. */ | |
2754 | ||
2755 | const struct target_desc * | |
2756 | target_read_description (struct target_ops *target) | |
2757 | { | |
f6ac5f3d | 2758 | return target->read_description (); |
424163ea DJ |
2759 | } |
2760 | ||
08388c79 | 2761 | |
58a5184e TT |
2762 | /* Default implementation of memory-searching. */ |
2763 | ||
2764 | static int | |
2765 | default_search_memory (struct target_ops *self, | |
2766 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2767 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2768 | CORE_ADDR *found_addrp) | |
2769 | { | |
4a72de73 TT |
2770 | auto read_memory = [=] (CORE_ADDR addr, gdb_byte *result, size_t len) |
2771 | { | |
328d42d8 SM |
2772 | return target_read (current_inferior ()->top_target (), |
2773 | TARGET_OBJECT_MEMORY, NULL, | |
4a72de73 TT |
2774 | result, addr, len) == len; |
2775 | }; | |
2776 | ||
58a5184e | 2777 | /* Start over from the top of the target stack. */ |
4a72de73 | 2778 | return simple_search_memory (read_memory, start_addr, search_space_len, |
58a5184e TT |
2779 | pattern, pattern_len, found_addrp); |
2780 | } | |
2781 | ||
08388c79 DE |
2782 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the |
2783 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2784 | ||
2785 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2786 | requiring halting of the search (e.g. memory read error). | |
2787 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2788 | ||
2789 | int | |
2790 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2791 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2792 | CORE_ADDR *found_addrp) | |
2793 | { | |
328d42d8 SM |
2794 | target_ops *target = current_inferior ()->top_target (); |
2795 | ||
2796 | return target->search_memory (start_addr, search_space_len, pattern, | |
2797 | pattern_len, found_addrp); | |
08388c79 DE |
2798 | } |
2799 | ||
8edfe269 DJ |
2800 | /* Look through the currently pushed targets. If none of them will |
2801 | be able to restart the currently running process, issue an error | |
2802 | message. */ | |
2803 | ||
2804 | void | |
2805 | target_require_runnable (void) | |
2806 | { | |
328d42d8 SM |
2807 | for (target_ops *t = current_inferior ()->top_target (); |
2808 | t != NULL; | |
2809 | t = t->beneath ()) | |
8edfe269 DJ |
2810 | { |
2811 | /* If this target knows how to create a new program, then | |
2812 | assume we will still be able to after killing the current | |
2813 | one. Either killing and mourning will not pop T, or else | |
2814 | find_default_run_target will find it again. */ | |
f6ac5f3d | 2815 | if (t->can_create_inferior ()) |
8edfe269 DJ |
2816 | return; |
2817 | ||
548740d6 | 2818 | /* Do not worry about targets at certain strata that can not |
8edfe269 DJ |
2819 | create inferiors. Assume they will be pushed again if |
2820 | necessary, and continue to the process_stratum. */ | |
66b4deae | 2821 | if (t->stratum () > process_stratum) |
8edfe269 DJ |
2822 | continue; |
2823 | ||
3e43a32a MS |
2824 | error (_("The \"%s\" target does not support \"run\". " |
2825 | "Try \"help target\" or \"continue\"."), | |
f6ac5f3d | 2826 | t->shortname ()); |
8edfe269 DJ |
2827 | } |
2828 | ||
2829 | /* This function is only called if the target is running. In that | |
2830 | case there should have been a process_stratum target and it | |
c378eb4e | 2831 | should either know how to create inferiors, or not... */ |
f34652de | 2832 | internal_error (_("No targets found")); |
8edfe269 DJ |
2833 | } |
2834 | ||
6a3cb8e8 PA |
2835 | /* Whether GDB is allowed to fall back to the default run target for |
2836 | "run", "attach", etc. when no target is connected yet. */ | |
491144b5 | 2837 | static bool auto_connect_native_target = true; |
6a3cb8e8 PA |
2838 | |
2839 | static void | |
2840 | show_auto_connect_native_target (struct ui_file *file, int from_tty, | |
2841 | struct cmd_list_element *c, const char *value) | |
2842 | { | |
6cb06a8c TT |
2843 | gdb_printf (file, |
2844 | _("Whether GDB may automatically connect to the " | |
2845 | "native target is %s.\n"), | |
2846 | value); | |
6a3cb8e8 PA |
2847 | } |
2848 | ||
d9f719f1 PA |
2849 | /* A pointer to the target that can respond to "run" or "attach". |
2850 | Native targets are always singletons and instantiated early at GDB | |
2851 | startup. */ | |
2852 | static target_ops *the_native_target; | |
2853 | ||
2854 | /* See target.h. */ | |
2855 | ||
2856 | void | |
2857 | set_native_target (target_ops *target) | |
2858 | { | |
2859 | if (the_native_target != NULL) | |
f34652de | 2860 | internal_error (_("native target already set (\"%s\")."), |
d9f719f1 PA |
2861 | the_native_target->longname ()); |
2862 | ||
2863 | the_native_target = target; | |
2864 | } | |
2865 | ||
2866 | /* See target.h. */ | |
2867 | ||
2868 | target_ops * | |
2869 | get_native_target () | |
2870 | { | |
2871 | return the_native_target; | |
2872 | } | |
2873 | ||
c906108c SS |
2874 | /* Look through the list of possible targets for a target that can |
2875 | execute a run or attach command without any other data. This is | |
2876 | used to locate the default process stratum. | |
2877 | ||
5f667f2d PA |
2878 | If DO_MESG is not NULL, the result is always valid (error() is |
2879 | called for errors); else, return NULL on error. */ | |
c906108c SS |
2880 | |
2881 | static struct target_ops * | |
a121b7c1 | 2882 | find_default_run_target (const char *do_mesg) |
c906108c | 2883 | { |
d9f719f1 PA |
2884 | if (auto_connect_native_target && the_native_target != NULL) |
2885 | return the_native_target; | |
c906108c | 2886 | |
d9f719f1 PA |
2887 | if (do_mesg != NULL) |
2888 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
2889 | return NULL; | |
c906108c SS |
2890 | } |
2891 | ||
b3ccfe11 | 2892 | /* See target.h. */ |
c906108c | 2893 | |
b3ccfe11 TT |
2894 | struct target_ops * |
2895 | find_attach_target (void) | |
c906108c | 2896 | { |
b3ccfe11 | 2897 | /* If a target on the current stack can attach, use it. */ |
328d42d8 SM |
2898 | for (target_ops *t = current_inferior ()->top_target (); |
2899 | t != NULL; | |
2900 | t = t->beneath ()) | |
b3ccfe11 | 2901 | { |
f6ac5f3d | 2902 | if (t->can_attach ()) |
d9f719f1 | 2903 | return t; |
b3ccfe11 | 2904 | } |
c906108c | 2905 | |
b3ccfe11 | 2906 | /* Otherwise, use the default run target for attaching. */ |
d9f719f1 | 2907 | return find_default_run_target ("attach"); |
b84876c2 PA |
2908 | } |
2909 | ||
b3ccfe11 | 2910 | /* See target.h. */ |
b84876c2 | 2911 | |
b3ccfe11 TT |
2912 | struct target_ops * |
2913 | find_run_target (void) | |
9908b566 | 2914 | { |
f6ac5f3d | 2915 | /* If a target on the current stack can run, use it. */ |
328d42d8 SM |
2916 | for (target_ops *t = current_inferior ()->top_target (); |
2917 | t != NULL; | |
2918 | t = t->beneath ()) | |
b3ccfe11 | 2919 | { |
f6ac5f3d | 2920 | if (t->can_create_inferior ()) |
d9f719f1 | 2921 | return t; |
b3ccfe11 | 2922 | } |
5d502164 | 2923 | |
b3ccfe11 | 2924 | /* Otherwise, use the default run target. */ |
d9f719f1 | 2925 | return find_default_run_target ("run"); |
9908b566 VP |
2926 | } |
2927 | ||
f6ac5f3d PA |
2928 | bool |
2929 | target_ops::info_proc (const char *args, enum info_proc_what what) | |
2930 | { | |
2931 | return false; | |
2932 | } | |
2933 | ||
145b16a9 UW |
2934 | /* Implement the "info proc" command. */ |
2935 | ||
451b7c33 | 2936 | int |
7bc112c1 | 2937 | target_info_proc (const char *args, enum info_proc_what what) |
145b16a9 UW |
2938 | { |
2939 | struct target_ops *t; | |
2940 | ||
2941 | /* If we're already connected to something that can get us OS | |
2942 | related data, use it. Otherwise, try using the native | |
2943 | target. */ | |
f6ac5f3d PA |
2944 | t = find_target_at (process_stratum); |
2945 | if (t == NULL) | |
145b16a9 UW |
2946 | t = find_default_run_target (NULL); |
2947 | ||
b6a8c27b | 2948 | for (; t != NULL; t = t->beneath ()) |
145b16a9 | 2949 | { |
f6ac5f3d | 2950 | if (t->info_proc (args, what)) |
145b16a9 | 2951 | { |
cb5dfff8 | 2952 | target_debug_printf_nofunc ("target_info_proc (\"%s\", %d)", args, what); |
451b7c33 | 2953 | return 1; |
145b16a9 UW |
2954 | } |
2955 | } | |
2956 | ||
451b7c33 | 2957 | return 0; |
145b16a9 UW |
2958 | } |
2959 | ||
03583c20 | 2960 | static int |
2bfc0540 | 2961 | find_default_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
2962 | { |
2963 | struct target_ops *t; | |
2964 | ||
2965 | t = find_default_run_target (NULL); | |
f6ac5f3d PA |
2966 | if (t != NULL) |
2967 | return t->supports_disable_randomization (); | |
03583c20 UW |
2968 | return 0; |
2969 | } | |
2970 | ||
2971 | int | |
2972 | target_supports_disable_randomization (void) | |
2973 | { | |
328d42d8 | 2974 | return current_inferior ()->top_target ()->supports_disable_randomization (); |
03583c20 | 2975 | } |
9908b566 | 2976 | |
1fb77080 SDJ |
2977 | /* See target/target.h. */ |
2978 | ||
2979 | int | |
2980 | target_supports_multi_process (void) | |
2981 | { | |
328d42d8 | 2982 | return current_inferior ()->top_target ()->supports_multi_process (); |
1fb77080 SDJ |
2983 | } |
2984 | ||
b7b030ad TT |
2985 | /* See target.h. */ |
2986 | ||
6b09f134 | 2987 | std::optional<gdb::char_vector> |
07e059b5 VP |
2988 | target_get_osdata (const char *type) |
2989 | { | |
07e059b5 VP |
2990 | struct target_ops *t; |
2991 | ||
739ef7fb PA |
2992 | /* If we're already connected to something that can get us OS |
2993 | related data, use it. Otherwise, try using the native | |
2994 | target. */ | |
f6ac5f3d PA |
2995 | t = find_target_at (process_stratum); |
2996 | if (t == NULL) | |
739ef7fb | 2997 | t = find_default_run_target ("get OS data"); |
07e059b5 VP |
2998 | |
2999 | if (!t) | |
9018be22 | 3000 | return {}; |
07e059b5 | 3001 | |
6d097e65 | 3002 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
3003 | } |
3004 | ||
b6a8c27b PA |
3005 | /* See target.h. */ |
3006 | ||
3007 | target_ops * | |
3008 | target_ops::beneath () const | |
3009 | { | |
5b6d1e4f | 3010 | return current_inferior ()->find_target_beneath (this); |
b6a8c27b PA |
3011 | } |
3012 | ||
f6ac5f3d PA |
3013 | void |
3014 | target_ops::close () | |
3015 | { | |
3016 | } | |
3017 | ||
3018 | bool | |
3019 | target_ops::can_attach () | |
3020 | { | |
3021 | return 0; | |
3022 | } | |
3023 | ||
3024 | void | |
3025 | target_ops::attach (const char *, int) | |
3026 | { | |
3027 | gdb_assert_not_reached ("target_ops::attach called"); | |
3028 | } | |
3029 | ||
3030 | bool | |
3031 | target_ops::can_create_inferior () | |
3032 | { | |
3033 | return 0; | |
3034 | } | |
3035 | ||
3036 | void | |
3037 | target_ops::create_inferior (const char *, const std::string &, | |
3038 | char **, int) | |
3039 | { | |
3040 | gdb_assert_not_reached ("target_ops::create_inferior called"); | |
3041 | } | |
3042 | ||
57810aa7 | 3043 | bool |
f6ac5f3d PA |
3044 | target_ops::can_run () |
3045 | { | |
57810aa7 | 3046 | return false; |
f6ac5f3d PA |
3047 | } |
3048 | ||
3049 | int | |
3050 | target_can_run () | |
3051 | { | |
328d42d8 SM |
3052 | for (target_ops *t = current_inferior ()->top_target (); |
3053 | t != NULL; | |
3054 | t = t->beneath ()) | |
f6ac5f3d PA |
3055 | { |
3056 | if (t->can_run ()) | |
3057 | return 1; | |
3058 | } | |
3059 | ||
3060 | return 0; | |
3061 | } | |
7313baad UW |
3062 | |
3063 | /* Target file operations. */ | |
3064 | ||
3065 | static struct target_ops * | |
3066 | default_fileio_target (void) | |
3067 | { | |
f6ac5f3d PA |
3068 | struct target_ops *t; |
3069 | ||
7313baad UW |
3070 | /* If we're already connected to something that can perform |
3071 | file I/O, use it. Otherwise, try using the native target. */ | |
f6ac5f3d PA |
3072 | t = find_target_at (process_stratum); |
3073 | if (t != NULL) | |
3074 | return t; | |
3075 | return find_default_run_target ("file I/O"); | |
7313baad UW |
3076 | } |
3077 | ||
1c4b552b GB |
3078 | /* File handle for target file operations. */ |
3079 | ||
5ff79300 | 3080 | struct fileio_fh_t |
1c4b552b | 3081 | { |
20db9c52 PA |
3082 | /* The target on which this file is open. NULL if the target is |
3083 | meanwhile closed while the handle is open. */ | |
5ff79300 | 3084 | target_ops *target; |
1c4b552b GB |
3085 | |
3086 | /* The file descriptor on the target. */ | |
5ff79300 | 3087 | int target_fd; |
1c4b552b | 3088 | |
5ff79300 PA |
3089 | /* Check whether this fileio_fh_t represents a closed file. */ |
3090 | bool is_closed () | |
3091 | { | |
3092 | return target_fd < 0; | |
3093 | } | |
3094 | }; | |
1c4b552b GB |
3095 | |
3096 | /* Vector of currently open file handles. The value returned by | |
3097 | target_fileio_open and passed as the FD argument to other | |
3098 | target_fileio_* functions is an index into this vector. This | |
3099 | vector's entries are never freed; instead, files are marked as | |
3100 | closed, and the handle becomes available for reuse. */ | |
5ff79300 | 3101 | static std::vector<fileio_fh_t> fileio_fhandles; |
1c4b552b GB |
3102 | |
3103 | /* Index into fileio_fhandles of the lowest handle that might be | |
3104 | closed. This permits handle reuse without searching the whole | |
3105 | list each time a new file is opened. */ | |
3106 | static int lowest_closed_fd; | |
3107 | ||
d7cb0ef3 | 3108 | /* See target.h. */ |
20db9c52 | 3109 | |
d7cb0ef3 | 3110 | void |
20db9c52 PA |
3111 | fileio_handles_invalidate_target (target_ops *targ) |
3112 | { | |
3113 | for (fileio_fh_t &fh : fileio_fhandles) | |
3114 | if (fh.target == targ) | |
3115 | fh.target = NULL; | |
3116 | } | |
3117 | ||
1c4b552b GB |
3118 | /* Acquire a target fileio file descriptor. */ |
3119 | ||
3120 | static int | |
5ff79300 | 3121 | acquire_fileio_fd (target_ops *target, int target_fd) |
1c4b552b | 3122 | { |
1c4b552b | 3123 | /* Search for closed handles to reuse. */ |
5ff79300 PA |
3124 | for (; lowest_closed_fd < fileio_fhandles.size (); lowest_closed_fd++) |
3125 | { | |
3126 | fileio_fh_t &fh = fileio_fhandles[lowest_closed_fd]; | |
3127 | ||
3128 | if (fh.is_closed ()) | |
3129 | break; | |
3130 | } | |
1c4b552b GB |
3131 | |
3132 | /* Push a new handle if no closed handles were found. */ | |
5ff79300 PA |
3133 | if (lowest_closed_fd == fileio_fhandles.size ()) |
3134 | fileio_fhandles.push_back (fileio_fh_t {target, target_fd}); | |
3135 | else | |
3136 | fileio_fhandles[lowest_closed_fd] = {target, target_fd}; | |
1c4b552b | 3137 | |
5ff79300 PA |
3138 | /* Should no longer be marked closed. */ |
3139 | gdb_assert (!fileio_fhandles[lowest_closed_fd].is_closed ()); | |
1c4b552b GB |
3140 | |
3141 | /* Return its index, and start the next lookup at | |
3142 | the next index. */ | |
3143 | return lowest_closed_fd++; | |
3144 | } | |
3145 | ||
3146 | /* Release a target fileio file descriptor. */ | |
3147 | ||
3148 | static void | |
3149 | release_fileio_fd (int fd, fileio_fh_t *fh) | |
3150 | { | |
5ff79300 | 3151 | fh->target_fd = -1; |
325fac50 | 3152 | lowest_closed_fd = std::min (lowest_closed_fd, fd); |
1c4b552b GB |
3153 | } |
3154 | ||
3155 | /* Return a pointer to the fileio_fhandle_t corresponding to FD. */ | |
3156 | ||
5ff79300 PA |
3157 | static fileio_fh_t * |
3158 | fileio_fd_to_fh (int fd) | |
3159 | { | |
3160 | return &fileio_fhandles[fd]; | |
3161 | } | |
1c4b552b | 3162 | |
f6ac5f3d PA |
3163 | |
3164 | /* Default implementations of file i/o methods. We don't want these | |
3165 | to delegate automatically, because we need to know which target | |
3166 | supported the method, in order to call it directly from within | |
3167 | pread/pwrite, etc. */ | |
3168 | ||
3169 | int | |
3170 | target_ops::fileio_open (struct inferior *inf, const char *filename, | |
3171 | int flags, int mode, int warn_if_slow, | |
b872057a | 3172 | fileio_error *target_errno) |
f6ac5f3d PA |
3173 | { |
3174 | *target_errno = FILEIO_ENOSYS; | |
3175 | return -1; | |
3176 | } | |
3177 | ||
3178 | int | |
3179 | target_ops::fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
b872057a | 3180 | ULONGEST offset, fileio_error *target_errno) |
f6ac5f3d PA |
3181 | { |
3182 | *target_errno = FILEIO_ENOSYS; | |
3183 | return -1; | |
3184 | } | |
3185 | ||
3186 | int | |
3187 | target_ops::fileio_pread (int fd, gdb_byte *read_buf, int len, | |
b872057a | 3188 | ULONGEST offset, fileio_error *target_errno) |
f6ac5f3d PA |
3189 | { |
3190 | *target_errno = FILEIO_ENOSYS; | |
3191 | return -1; | |
3192 | } | |
3193 | ||
3194 | int | |
b872057a | 3195 | target_ops::fileio_fstat (int fd, struct stat *sb, fileio_error *target_errno) |
f6ac5f3d PA |
3196 | { |
3197 | *target_errno = FILEIO_ENOSYS; | |
3198 | return -1; | |
3199 | } | |
3200 | ||
3201 | int | |
b872057a | 3202 | target_ops::fileio_close (int fd, fileio_error *target_errno) |
f6ac5f3d PA |
3203 | { |
3204 | *target_errno = FILEIO_ENOSYS; | |
3205 | return -1; | |
3206 | } | |
3207 | ||
3208 | int | |
3209 | target_ops::fileio_unlink (struct inferior *inf, const char *filename, | |
b872057a | 3210 | fileio_error *target_errno) |
f6ac5f3d PA |
3211 | { |
3212 | *target_errno = FILEIO_ENOSYS; | |
3213 | return -1; | |
3214 | } | |
3215 | ||
6b09f134 | 3216 | std::optional<std::string> |
f6ac5f3d | 3217 | target_ops::fileio_readlink (struct inferior *inf, const char *filename, |
b872057a | 3218 | fileio_error *target_errno) |
f6ac5f3d PA |
3219 | { |
3220 | *target_errno = FILEIO_ENOSYS; | |
3221 | return {}; | |
3222 | } | |
3223 | ||
4111f652 | 3224 | /* See target.h. */ |
12e2a5fd | 3225 | |
4111f652 PA |
3226 | int |
3227 | target_fileio_open (struct inferior *inf, const char *filename, | |
b872057a | 3228 | int flags, int mode, bool warn_if_slow, fileio_error *target_errno) |
7313baad | 3229 | { |
b6a8c27b | 3230 | for (target_ops *t = default_fileio_target (); t != NULL; t = t->beneath ()) |
7313baad | 3231 | { |
f6ac5f3d PA |
3232 | int fd = t->fileio_open (inf, filename, flags, mode, |
3233 | warn_if_slow, target_errno); | |
7313baad | 3234 | |
f6ac5f3d PA |
3235 | if (fd == -1 && *target_errno == FILEIO_ENOSYS) |
3236 | continue; | |
1c4b552b | 3237 | |
f6ac5f3d PA |
3238 | if (fd < 0) |
3239 | fd = -1; | |
3240 | else | |
3241 | fd = acquire_fileio_fd (t, fd); | |
3242 | ||
cb5dfff8 SM |
3243 | target_debug_printf_nofunc ("target_fileio_open (%d,%s,0x%x,0%o,%d) = %d (%d)", |
3244 | inf == NULL ? 0 : inf->num, filename, flags, mode, | |
3245 | warn_if_slow, fd, fd != -1 ? 0 : *target_errno); | |
f6ac5f3d | 3246 | return fd; |
7313baad UW |
3247 | } |
3248 | ||
3249 | *target_errno = FILEIO_ENOSYS; | |
3250 | return -1; | |
3251 | } | |
3252 | ||
12e2a5fd GB |
3253 | /* See target.h. */ |
3254 | ||
7313baad UW |
3255 | int |
3256 | target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
b872057a | 3257 | ULONGEST offset, fileio_error *target_errno) |
7313baad | 3258 | { |
1c4b552b GB |
3259 | fileio_fh_t *fh = fileio_fd_to_fh (fd); |
3260 | int ret = -1; | |
7313baad | 3261 | |
5ff79300 | 3262 | if (fh->is_closed ()) |
b872057a | 3263 | *target_errno = FILEIO_EBADF; |
20db9c52 | 3264 | else if (fh->target == NULL) |
b872057a | 3265 | *target_errno = FILEIO_EIO; |
1c4b552b | 3266 | else |
f6ac5f3d PA |
3267 | ret = fh->target->fileio_pwrite (fh->target_fd, write_buf, |
3268 | len, offset, target_errno); | |
7313baad | 3269 | |
cb5dfff8 SM |
3270 | target_debug_printf_nofunc ("target_fileio_pwrite (%d,...,%d,%s) = %d (%d)", fd, |
3271 | len, pulongest (offset), ret, | |
3272 | ret != -1 ? 0 : *target_errno); | |
1c4b552b | 3273 | return ret; |
7313baad UW |
3274 | } |
3275 | ||
12e2a5fd GB |
3276 | /* See target.h. */ |
3277 | ||
7313baad UW |
3278 | int |
3279 | target_fileio_pread (int fd, gdb_byte *read_buf, int len, | |
b872057a | 3280 | ULONGEST offset, fileio_error *target_errno) |
7313baad | 3281 | { |
1c4b552b GB |
3282 | fileio_fh_t *fh = fileio_fd_to_fh (fd); |
3283 | int ret = -1; | |
7313baad | 3284 | |
5ff79300 | 3285 | if (fh->is_closed ()) |
b872057a | 3286 | *target_errno = FILEIO_EBADF; |
20db9c52 | 3287 | else if (fh->target == NULL) |
b872057a | 3288 | *target_errno = FILEIO_EIO; |
1c4b552b | 3289 | else |
f6ac5f3d PA |
3290 | ret = fh->target->fileio_pread (fh->target_fd, read_buf, |
3291 | len, offset, target_errno); | |
7313baad | 3292 | |
cb5dfff8 SM |
3293 | target_debug_printf_nofunc ("target_fileio_pread (%d,...,%d,%s) = %d (%d)", fd, len, |
3294 | pulongest (offset), ret, ret != -1 ? 0 : *target_errno); | |
9b15c1f0 GB |
3295 | return ret; |
3296 | } | |
3297 | ||
3298 | /* See target.h. */ | |
12e2a5fd | 3299 | |
9b15c1f0 | 3300 | int |
b872057a | 3301 | target_fileio_fstat (int fd, struct stat *sb, fileio_error *target_errno) |
9b15c1f0 GB |
3302 | { |
3303 | fileio_fh_t *fh = fileio_fd_to_fh (fd); | |
3304 | int ret = -1; | |
3305 | ||
5ff79300 | 3306 | if (fh->is_closed ()) |
b872057a | 3307 | *target_errno = FILEIO_EBADF; |
20db9c52 | 3308 | else if (fh->target == NULL) |
b872057a | 3309 | *target_errno = FILEIO_EIO; |
9b15c1f0 | 3310 | else |
f6ac5f3d | 3311 | ret = fh->target->fileio_fstat (fh->target_fd, sb, target_errno); |
9b15c1f0 | 3312 | |
cb5dfff8 SM |
3313 | target_debug_printf_nofunc ("target_fileio_fstat (%d) = %d (%d)", fd, ret, |
3314 | ret != -1 ? 0 : *target_errno); | |
1c4b552b | 3315 | return ret; |
7313baad UW |
3316 | } |
3317 | ||
12e2a5fd GB |
3318 | /* See target.h. */ |
3319 | ||
7313baad | 3320 | int |
b872057a | 3321 | target_fileio_close (int fd, 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; |
1c4b552b | 3328 | else |
7313baad | 3329 | { |
20db9c52 | 3330 | if (fh->target != NULL) |
f6ac5f3d PA |
3331 | ret = fh->target->fileio_close (fh->target_fd, |
3332 | target_errno); | |
20db9c52 PA |
3333 | else |
3334 | ret = 0; | |
1c4b552b | 3335 | release_fileio_fd (fd, fh); |
7313baad UW |
3336 | } |
3337 | ||
cb5dfff8 SM |
3338 | target_debug_printf_nofunc ("target_fileio_close (%d) = %d (%d)", fd, ret, |
3339 | ret != -1 ? 0 : *target_errno); | |
1c4b552b | 3340 | return ret; |
7313baad UW |
3341 | } |
3342 | ||
12e2a5fd GB |
3343 | /* See target.h. */ |
3344 | ||
7313baad | 3345 | int |
07c138c8 | 3346 | target_fileio_unlink (struct inferior *inf, const char *filename, |
b872057a | 3347 | fileio_error *target_errno) |
7313baad | 3348 | { |
b6a8c27b | 3349 | for (target_ops *t = default_fileio_target (); t != NULL; t = t->beneath ()) |
7313baad | 3350 | { |
f6ac5f3d | 3351 | int ret = t->fileio_unlink (inf, filename, target_errno); |
7313baad | 3352 | |
f6ac5f3d PA |
3353 | if (ret == -1 && *target_errno == FILEIO_ENOSYS) |
3354 | continue; | |
3355 | ||
cb5dfff8 SM |
3356 | target_debug_printf_nofunc ("target_fileio_unlink (%d,%s) = %d (%d)", |
3357 | inf == NULL ? 0 : inf->num, filename, ret, | |
3358 | ret != -1 ? 0 : *target_errno); | |
f6ac5f3d | 3359 | return ret; |
7313baad UW |
3360 | } |
3361 | ||
3362 | *target_errno = FILEIO_ENOSYS; | |
3363 | return -1; | |
3364 | } | |
3365 | ||
12e2a5fd GB |
3366 | /* See target.h. */ |
3367 | ||
6b09f134 | 3368 | std::optional<std::string> |
07c138c8 | 3369 | target_fileio_readlink (struct inferior *inf, const char *filename, |
b872057a | 3370 | fileio_error *target_errno) |
b9e7b9c3 | 3371 | { |
b6a8c27b | 3372 | for (target_ops *t = default_fileio_target (); t != NULL; t = t->beneath ()) |
b9e7b9c3 | 3373 | { |
6b09f134 | 3374 | std::optional<std::string> ret |
f6ac5f3d | 3375 | = t->fileio_readlink (inf, filename, target_errno); |
b9e7b9c3 | 3376 | |
f6ac5f3d PA |
3377 | if (!ret.has_value () && *target_errno == FILEIO_ENOSYS) |
3378 | continue; | |
3379 | ||
cb5dfff8 SM |
3380 | target_debug_printf_nofunc ("target_fileio_readlink (%d,%s) = %s (%d)", |
3381 | inf == NULL ? 0 : inf->num, filename, | |
3382 | ret ? ret->c_str () : "(nil)", | |
3383 | ret ? 0 : *target_errno); | |
f6ac5f3d | 3384 | return ret; |
b9e7b9c3 UW |
3385 | } |
3386 | ||
3387 | *target_errno = FILEIO_ENOSYS; | |
e0d3522b | 3388 | return {}; |
b9e7b9c3 UW |
3389 | } |
3390 | ||
770623f7 TT |
3391 | /* Like scoped_fd, but specific to target fileio. */ |
3392 | ||
3393 | class scoped_target_fd | |
7313baad | 3394 | { |
770623f7 TT |
3395 | public: |
3396 | explicit scoped_target_fd (int fd) noexcept | |
3397 | : m_fd (fd) | |
3398 | { | |
3399 | } | |
7313baad | 3400 | |
770623f7 TT |
3401 | ~scoped_target_fd () |
3402 | { | |
3403 | if (m_fd >= 0) | |
3404 | { | |
b872057a | 3405 | fileio_error target_errno; |
770623f7 TT |
3406 | |
3407 | target_fileio_close (m_fd, &target_errno); | |
3408 | } | |
3409 | } | |
3410 | ||
3411 | DISABLE_COPY_AND_ASSIGN (scoped_target_fd); | |
3412 | ||
3413 | int get () const noexcept | |
3414 | { | |
3415 | return m_fd; | |
3416 | } | |
3417 | ||
3418 | private: | |
3419 | int m_fd; | |
3420 | }; | |
7313baad | 3421 | |
07c138c8 GB |
3422 | /* Read target file FILENAME, in the filesystem as seen by INF. If |
3423 | INF is NULL, use the filesystem seen by the debugger (GDB or, for | |
3424 | remote targets, the remote stub). Store the result in *BUF_P and | |
3425 | return the size of the transferred data. PADDING additional bytes | |
3426 | are available in *BUF_P. This is a helper function for | |
3427 | target_fileio_read_alloc; see the declaration of that function for | |
3428 | more information. */ | |
7313baad | 3429 | |
f7af1fcd JK |
3430 | static LONGEST |
3431 | target_fileio_read_alloc_1 (struct inferior *inf, const char *filename, | |
3432 | gdb_byte **buf_p, int padding) | |
3433 | { | |
db1ff28b JK |
3434 | size_t buf_alloc, buf_pos; |
3435 | gdb_byte *buf; | |
3436 | LONGEST n; | |
b872057a | 3437 | fileio_error target_errno; |
f7af1fcd | 3438 | |
770623f7 | 3439 | scoped_target_fd fd (target_fileio_open (inf, filename, FILEIO_O_RDONLY, |
4111f652 | 3440 | 0700, false, &target_errno)); |
770623f7 | 3441 | if (fd.get () == -1) |
f7af1fcd JK |
3442 | return -1; |
3443 | ||
db1ff28b JK |
3444 | /* Start by reading up to 4K at a time. The target will throttle |
3445 | this number down if necessary. */ | |
3446 | buf_alloc = 4096; | |
224c3ddb | 3447 | buf = (gdb_byte *) xmalloc (buf_alloc); |
db1ff28b JK |
3448 | buf_pos = 0; |
3449 | while (1) | |
3450 | { | |
770623f7 | 3451 | n = target_fileio_pread (fd.get (), &buf[buf_pos], |
db1ff28b JK |
3452 | buf_alloc - buf_pos - padding, buf_pos, |
3453 | &target_errno); | |
3454 | if (n < 0) | |
3455 | { | |
3456 | /* An error occurred. */ | |
db1ff28b JK |
3457 | xfree (buf); |
3458 | return -1; | |
3459 | } | |
3460 | else if (n == 0) | |
3461 | { | |
3462 | /* Read all there was. */ | |
db1ff28b JK |
3463 | if (buf_pos == 0) |
3464 | xfree (buf); | |
3465 | else | |
3466 | *buf_p = buf; | |
3467 | return buf_pos; | |
3468 | } | |
3469 | ||
3470 | buf_pos += n; | |
3471 | ||
3472 | /* If the buffer is filling up, expand it. */ | |
3473 | if (buf_alloc < buf_pos * 2) | |
3474 | { | |
3475 | buf_alloc *= 2; | |
224c3ddb | 3476 | buf = (gdb_byte *) xrealloc (buf, buf_alloc); |
db1ff28b JK |
3477 | } |
3478 | ||
3479 | QUIT; | |
3480 | } | |
f7af1fcd JK |
3481 | } |
3482 | ||
12e2a5fd | 3483 | /* See target.h. */ |
7313baad UW |
3484 | |
3485 | LONGEST | |
07c138c8 GB |
3486 | target_fileio_read_alloc (struct inferior *inf, const char *filename, |
3487 | gdb_byte **buf_p) | |
7313baad | 3488 | { |
07c138c8 | 3489 | return target_fileio_read_alloc_1 (inf, filename, buf_p, 0); |
7313baad UW |
3490 | } |
3491 | ||
db1ff28b | 3492 | /* See target.h. */ |
f7af1fcd | 3493 | |
87028b87 | 3494 | gdb::unique_xmalloc_ptr<char> |
f7af1fcd JK |
3495 | target_fileio_read_stralloc (struct inferior *inf, const char *filename) |
3496 | { | |
db1ff28b JK |
3497 | gdb_byte *buffer; |
3498 | char *bufstr; | |
3499 | LONGEST i, transferred; | |
3500 | ||
3501 | transferred = target_fileio_read_alloc_1 (inf, filename, &buffer, 1); | |
3502 | bufstr = (char *) buffer; | |
3503 | ||
3504 | if (transferred < 0) | |
87028b87 | 3505 | return gdb::unique_xmalloc_ptr<char> (nullptr); |
db1ff28b JK |
3506 | |
3507 | if (transferred == 0) | |
b02f78f9 | 3508 | return make_unique_xstrdup (""); |
db1ff28b JK |
3509 | |
3510 | bufstr[transferred] = 0; | |
3511 | ||
3512 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
3513 | for (i = strlen (bufstr); i < transferred; i++) | |
3514 | if (bufstr[i] != 0) | |
3515 | { | |
3516 | warning (_("target file %s " | |
3517 | "contained unexpected null characters"), | |
3518 | filename); | |
3519 | break; | |
3520 | } | |
3521 | ||
87028b87 | 3522 | return gdb::unique_xmalloc_ptr<char> (bufstr); |
f7af1fcd | 3523 | } |
7313baad | 3524 | |
db1ff28b | 3525 | |
e0d24f8d | 3526 | static int |
31568a15 TT |
3527 | default_region_ok_for_hw_watchpoint (struct target_ops *self, |
3528 | CORE_ADDR addr, int len) | |
e0d24f8d | 3529 | { |
99d9c3b9 SM |
3530 | gdbarch *arch = current_inferior ()->arch (); |
3531 | return (len <= gdbarch_ptr_bit (arch) / TARGET_CHAR_BIT); | |
ccaa32c7 GS |
3532 | } |
3533 | ||
5009afc5 AS |
3534 | static int |
3535 | default_watchpoint_addr_within_range (struct target_ops *target, | |
3536 | CORE_ADDR addr, | |
3537 | CORE_ADDR start, int length) | |
3538 | { | |
3539 | return addr >= start && addr < start + length; | |
3540 | } | |
3541 | ||
8b06beed TT |
3542 | /* See target.h. */ |
3543 | ||
a1740ee1 PA |
3544 | target_ops * |
3545 | target_stack::find_beneath (const target_ops *t) const | |
8b06beed | 3546 | { |
a1740ee1 | 3547 | /* Look for a non-empty slot at stratum levels beneath T's. */ |
66b4deae | 3548 | for (int stratum = t->stratum () - 1; stratum >= 0; --stratum) |
91e3d1d1 AB |
3549 | if (m_stack[stratum].get () != NULL) |
3550 | return m_stack[stratum].get (); | |
8b06beed TT |
3551 | |
3552 | return NULL; | |
3553 | } | |
3554 | ||
a1740ee1 PA |
3555 | /* See target.h. */ |
3556 | ||
3557 | struct target_ops * | |
3558 | find_target_at (enum strata stratum) | |
3559 | { | |
5b6d1e4f | 3560 | return current_inferior ()->target_at (stratum); |
a1740ee1 PA |
3561 | } |
3562 | ||
c906108c | 3563 | \f |
0f48b757 PA |
3564 | |
3565 | /* See target.h */ | |
3566 | ||
3567 | void | |
3568 | target_announce_detach (int from_tty) | |
3569 | { | |
3570 | pid_t pid; | |
a121b7c1 | 3571 | const char *exec_file; |
0f48b757 PA |
3572 | |
3573 | if (!from_tty) | |
3574 | return; | |
3575 | ||
e99b03dc | 3576 | pid = inferior_ptid.pid (); |
0a70e1a8 | 3577 | exec_file = current_program_space->exec_filename (); |
41e321a8 | 3578 | if (exec_file == nullptr) |
6cb06a8c TT |
3579 | gdb_printf ("Detaching from pid %s\n", |
3580 | target_pid_to_str (ptid_t (pid)).c_str ()); | |
41e321a8 | 3581 | else |
5260dcf0 AB |
3582 | gdb_printf (_("Detaching from program: %ps, %s\n"), |
3583 | styled_string (file_name_style.style (), exec_file), | |
6cb06a8c | 3584 | target_pid_to_str (ptid_t (pid)).c_str ()); |
bc521517 TT |
3585 | } |
3586 | ||
3587 | /* See target.h */ | |
3588 | ||
3589 | void | |
3590 | target_announce_attach (int from_tty, int pid) | |
3591 | { | |
3592 | if (!from_tty) | |
3593 | return; | |
3594 | ||
0a70e1a8 | 3595 | const char *exec_file = current_program_space->exec_filename (); |
bc521517 | 3596 | |
249f1cf8 | 3597 | if (exec_file != nullptr) |
5260dcf0 AB |
3598 | gdb_printf ("Attaching to program: %ps, %s\n", |
3599 | styled_string (file_name_style.style (), exec_file), | |
6cb06a8c | 3600 | target_pid_to_str (ptid_t (pid)).c_str ()); |
bc521517 | 3601 | else |
6cb06a8c TT |
3602 | gdb_printf ("Attaching to %s\n", |
3603 | target_pid_to_str (ptid_t (pid)).c_str ()); | |
0f48b757 PA |
3604 | } |
3605 | ||
c906108c SS |
3606 | /* The inferior process has died. Long live the inferior! */ |
3607 | ||
3608 | void | |
fba45db2 | 3609 | generic_mourn_inferior (void) |
c906108c | 3610 | { |
00431a78 | 3611 | inferior *inf = current_inferior (); |
c906108c | 3612 | |
a0776b13 | 3613 | switch_to_no_thread (); |
7f9f62ba | 3614 | |
f59f708a PA |
3615 | /* Mark breakpoints uninserted in case something tries to delete a |
3616 | breakpoint while we delete the inferior's threads (which would | |
3617 | fail, since the inferior is long gone). */ | |
c72348e3 | 3618 | mark_breakpoints_out (inf->pspace); |
f59f708a | 3619 | |
00431a78 PA |
3620 | if (inf->pid != 0) |
3621 | exit_inferior (inf); | |
7f9f62ba | 3622 | |
f59f708a PA |
3623 | /* Note this wipes step-resume breakpoints, so needs to be done |
3624 | after exit_inferior, which ends up referencing the step-resume | |
3625 | breakpoints through clear_thread_inferior_resources. */ | |
f5928702 | 3626 | breakpoint_init_inferior (inf, inf_exited); |
f59f708a | 3627 | |
c906108c SS |
3628 | registers_changed (); |
3629 | ||
c906108c SS |
3630 | reopen_exec_file (); |
3631 | reinit_frame_cache (); | |
3632 | ||
9a4105ab AC |
3633 | if (deprecated_detach_hook) |
3634 | deprecated_detach_hook (); | |
c906108c SS |
3635 | } |
3636 | \f | |
fd0a2a6f MK |
3637 | /* Convert a normal process ID to a string. Returns the string in a |
3638 | static buffer. */ | |
c906108c | 3639 | |
a068643d | 3640 | std::string |
39f77062 | 3641 | normal_pid_to_str (ptid_t ptid) |
c906108c | 3642 | { |
a068643d | 3643 | return string_printf ("process %d", ptid.pid ()); |
c906108c SS |
3644 | } |
3645 | ||
a068643d | 3646 | static std::string |
770234d3 | 3647 | default_pid_to_str (struct target_ops *ops, ptid_t ptid) |
117de6a9 PA |
3648 | { |
3649 | return normal_pid_to_str (ptid); | |
3650 | } | |
3651 | ||
9b4eba8e HZ |
3652 | /* Error-catcher for target_find_memory_regions. */ |
3653 | static int | |
2e73927c TT |
3654 | dummy_find_memory_regions (struct target_ops *self, |
3655 | find_memory_region_ftype ignore1, void *ignore2) | |
be4d1333 | 3656 | { |
9b4eba8e | 3657 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3658 | return 0; |
3659 | } | |
3660 | ||
9b4eba8e | 3661 | /* Error-catcher for target_make_corefile_notes. */ |
24f5300a | 3662 | static gdb::unique_xmalloc_ptr<char> |
fc6691b2 TT |
3663 | dummy_make_corefile_notes (struct target_ops *self, |
3664 | bfd *ignore1, int *ignore2) | |
be4d1333 | 3665 | { |
9b4eba8e | 3666 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3667 | return NULL; |
3668 | } | |
3669 | ||
f6ac5f3d PA |
3670 | #include "target-delegates.c" |
3671 | ||
06b5b831 TT |
3672 | /* The initial current target, so that there is always a semi-valid |
3673 | current target. */ | |
3674 | ||
3675 | static dummy_target the_dummy_target; | |
c906108c | 3676 | |
5b6d1e4f PA |
3677 | /* See target.h. */ |
3678 | ||
3679 | target_ops * | |
3680 | get_dummy_target () | |
3681 | { | |
3682 | return &the_dummy_target; | |
3683 | } | |
3684 | ||
d9f719f1 PA |
3685 | static const target_info dummy_target_info = { |
3686 | "None", | |
3687 | N_("None"), | |
3688 | "" | |
3689 | }; | |
3690 | ||
66b4deae PA |
3691 | strata |
3692 | dummy_target::stratum () const | |
f6ac5f3d | 3693 | { |
66b4deae | 3694 | return dummy_stratum; |
f6ac5f3d PA |
3695 | } |
3696 | ||
66b4deae PA |
3697 | strata |
3698 | debug_target::stratum () const | |
f6ac5f3d | 3699 | { |
66b4deae | 3700 | return debug_stratum; |
f6ac5f3d PA |
3701 | } |
3702 | ||
d9f719f1 PA |
3703 | const target_info & |
3704 | dummy_target::info () const | |
f6ac5f3d | 3705 | { |
d9f719f1 | 3706 | return dummy_target_info; |
f6ac5f3d PA |
3707 | } |
3708 | ||
d9f719f1 PA |
3709 | const target_info & |
3710 | debug_target::info () const | |
f6ac5f3d | 3711 | { |
b6a8c27b | 3712 | return beneath ()->info (); |
f6ac5f3d PA |
3713 | } |
3714 | ||
c906108c | 3715 | \f |
c906108c | 3716 | |
28439f5e PA |
3717 | int |
3718 | target_thread_alive (ptid_t ptid) | |
c906108c | 3719 | { |
328d42d8 | 3720 | return current_inferior ()->top_target ()->thread_alive (ptid); |
28439f5e PA |
3721 | } |
3722 | ||
3723 | void | |
e8032dde | 3724 | target_update_thread_list (void) |
28439f5e | 3725 | { |
328d42d8 | 3726 | current_inferior ()->top_target ()->update_thread_list (); |
c906108c SS |
3727 | } |
3728 | ||
d914c394 SS |
3729 | void |
3730 | target_stop (ptid_t ptid) | |
3731 | { | |
1192f124 SM |
3732 | process_stratum_target *proc_target = current_inferior ()->process_target (); |
3733 | ||
3734 | gdb_assert (!proc_target->commit_resumed_state); | |
3735 | ||
d914c394 SS |
3736 | if (!may_stop) |
3737 | { | |
3738 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3739 | return; | |
3740 | } | |
3741 | ||
328d42d8 | 3742 | current_inferior ()->top_target ()->stop (ptid); |
d914c394 SS |
3743 | } |
3744 | ||
bfedc46a | 3745 | void |
e671cd59 | 3746 | target_interrupt () |
bfedc46a PA |
3747 | { |
3748 | if (!may_stop) | |
3749 | { | |
3750 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3751 | return; | |
3752 | } | |
3753 | ||
328d42d8 | 3754 | current_inferior ()->top_target ()->interrupt (); |
bfedc46a PA |
3755 | } |
3756 | ||
abc56d60 PA |
3757 | /* See target.h. */ |
3758 | ||
93692b58 PA |
3759 | void |
3760 | target_pass_ctrlc (void) | |
3761 | { | |
5b6d1e4f PA |
3762 | /* Pass the Ctrl-C to the first target that has a thread |
3763 | running. */ | |
3764 | for (inferior *inf : all_inferiors ()) | |
3765 | { | |
3766 | target_ops *proc_target = inf->process_target (); | |
3767 | if (proc_target == NULL) | |
3768 | continue; | |
3769 | ||
43667cc6 | 3770 | for (thread_info *thr : inf->non_exited_threads ()) |
5b6d1e4f PA |
3771 | { |
3772 | /* A thread can be THREAD_STOPPED and executing, while | |
3773 | running an infcall. */ | |
611841bb | 3774 | if (thr->state == THREAD_RUNNING || thr->executing ()) |
5b6d1e4f PA |
3775 | { |
3776 | /* We can get here quite deep in target layers. Avoid | |
3777 | switching thread context or anything that would | |
3778 | communicate with the target (e.g., to fetch | |
3779 | registers), or flushing e.g., the frame cache. We | |
3780 | just switch inferior in order to be able to call | |
3781 | through the target_stack. */ | |
3782 | scoped_restore_current_inferior restore_inferior; | |
3783 | set_current_inferior (inf); | |
328d42d8 | 3784 | current_inferior ()->top_target ()->pass_ctrlc (); |
5b6d1e4f PA |
3785 | return; |
3786 | } | |
3787 | } | |
3788 | } | |
93692b58 PA |
3789 | } |
3790 | ||
3791 | /* See target.h. */ | |
3792 | ||
3793 | void | |
3794 | default_target_pass_ctrlc (struct target_ops *ops) | |
3795 | { | |
e671cd59 | 3796 | target_interrupt (); |
93692b58 PA |
3797 | } |
3798 | ||
f8c1d06b GB |
3799 | /* See target/target.h. */ |
3800 | ||
3801 | void | |
03f4463b | 3802 | target_stop_and_wait (ptid_t ptid) |
f8c1d06b GB |
3803 | { |
3804 | struct target_waitstatus status; | |
491144b5 | 3805 | bool was_non_stop = non_stop; |
f8c1d06b | 3806 | |
491144b5 | 3807 | non_stop = true; |
f8c1d06b GB |
3808 | target_stop (ptid); |
3809 | ||
f8c1d06b GB |
3810 | target_wait (ptid, &status, 0); |
3811 | ||
3812 | non_stop = was_non_stop; | |
3813 | } | |
3814 | ||
3815 | /* See target/target.h. */ | |
3816 | ||
3817 | void | |
03f4463b | 3818 | target_continue_no_signal (ptid_t ptid) |
f8c1d06b GB |
3819 | { |
3820 | target_resume (ptid, 0, GDB_SIGNAL_0); | |
3821 | } | |
3822 | ||
049a8570 SDJ |
3823 | /* See target/target.h. */ |
3824 | ||
3825 | void | |
3826 | target_continue (ptid_t ptid, enum gdb_signal signal) | |
3827 | { | |
3828 | target_resume (ptid, 0, signal); | |
3829 | } | |
3830 | ||
fdbac7d8 | 3831 | /* Concatenate ELEM to LIST, a comma-separated list. */ |
09826ec5 | 3832 | |
09ce46f2 SM |
3833 | static void |
3834 | str_comma_list_concat_elem (std::string *list, const char *elem) | |
09826ec5 | 3835 | { |
09ce46f2 SM |
3836 | if (!list->empty ()) |
3837 | list->append (", "); | |
3838 | ||
3839 | list->append (elem); | |
09826ec5 PA |
3840 | } |
3841 | ||
3842 | /* Helper for target_options_to_string. If OPT is present in | |
3843 | TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET. | |
09ce46f2 | 3844 | OPT is removed from TARGET_OPTIONS. */ |
09826ec5 | 3845 | |
09ce46f2 | 3846 | static void |
b60cea74 TT |
3847 | do_option (target_wait_flags *target_options, std::string *ret, |
3848 | target_wait_flag opt, const char *opt_str) | |
09826ec5 PA |
3849 | { |
3850 | if ((*target_options & opt) != 0) | |
3851 | { | |
09ce46f2 | 3852 | str_comma_list_concat_elem (ret, opt_str); |
09826ec5 PA |
3853 | *target_options &= ~opt; |
3854 | } | |
09826ec5 PA |
3855 | } |
3856 | ||
fdbac7d8 SM |
3857 | /* See target.h. */ |
3858 | ||
09ce46f2 | 3859 | std::string |
b60cea74 | 3860 | target_options_to_string (target_wait_flags target_options) |
09826ec5 | 3861 | { |
09ce46f2 | 3862 | std::string ret; |
09826ec5 PA |
3863 | |
3864 | #define DO_TARG_OPTION(OPT) \ | |
09ce46f2 | 3865 | do_option (&target_options, &ret, OPT, #OPT) |
09826ec5 PA |
3866 | |
3867 | DO_TARG_OPTION (TARGET_WNOHANG); | |
3868 | ||
3869 | if (target_options != 0) | |
09ce46f2 | 3870 | str_comma_list_concat_elem (&ret, "unknown???"); |
09826ec5 | 3871 | |
09826ec5 PA |
3872 | return ret; |
3873 | } | |
3874 | ||
28439f5e PA |
3875 | void |
3876 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 3877 | { |
328d42d8 | 3878 | current_inferior ()->top_target ()->fetch_registers (regcache, regno); |
cb5dfff8 | 3879 | target_debug_printf ("%s", regcache->register_debug_string (regno).c_str ()); |
c906108c SS |
3880 | } |
3881 | ||
28439f5e PA |
3882 | void |
3883 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 3884 | { |
d914c394 SS |
3885 | if (!may_write_registers) |
3886 | error (_("Writing to registers is not allowed (regno %d)"), regno); | |
3887 | ||
328d42d8 | 3888 | current_inferior ()->top_target ()->store_registers (regcache, regno); |
cb5dfff8 | 3889 | target_debug_printf ("%s", regcache->register_debug_string (regno).c_str ()); |
c906108c SS |
3890 | } |
3891 | ||
dc146f7c VP |
3892 | int |
3893 | target_core_of_thread (ptid_t ptid) | |
3894 | { | |
328d42d8 | 3895 | return current_inferior ()->top_target ()->core_of_thread (ptid); |
dc146f7c VP |
3896 | } |
3897 | ||
936d2992 PA |
3898 | int |
3899 | simple_verify_memory (struct target_ops *ops, | |
3900 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
3901 | { | |
3902 | LONGEST total_xfered = 0; | |
3903 | ||
3904 | while (total_xfered < size) | |
3905 | { | |
3906 | ULONGEST xfered_len; | |
3907 | enum target_xfer_status status; | |
3908 | gdb_byte buf[1024]; | |
768adc05 | 3909 | ULONGEST howmuch = std::min<ULONGEST> (sizeof (buf), size - total_xfered); |
936d2992 PA |
3910 | |
3911 | status = target_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
3912 | buf, NULL, lma + total_xfered, howmuch, | |
3913 | &xfered_len); | |
3914 | if (status == TARGET_XFER_OK | |
3915 | && memcmp (data + total_xfered, buf, xfered_len) == 0) | |
3916 | { | |
3917 | total_xfered += xfered_len; | |
3918 | QUIT; | |
3919 | } | |
3920 | else | |
3921 | return 0; | |
3922 | } | |
3923 | return 1; | |
3924 | } | |
3925 | ||
3926 | /* Default implementation of memory verification. */ | |
3927 | ||
3928 | static int | |
3929 | default_verify_memory (struct target_ops *self, | |
3930 | const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3931 | { | |
3932 | /* Start over from the top of the target stack. */ | |
328d42d8 | 3933 | return simple_verify_memory (current_inferior ()->top_target (), |
936d2992 PA |
3934 | data, memaddr, size); |
3935 | } | |
3936 | ||
4a5e7a5b PA |
3937 | int |
3938 | target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3939 | { | |
328d42d8 SM |
3940 | target_ops *target = current_inferior ()->top_target (); |
3941 | ||
3942 | return target->verify_memory (data, memaddr, size); | |
4a5e7a5b PA |
3943 | } |
3944 | ||
9c06b0b4 TJB |
3945 | /* The documentation for this function is in its prototype declaration in |
3946 | target.h. */ | |
3947 | ||
3948 | int | |
f4b0a671 SM |
3949 | target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, |
3950 | enum target_hw_bp_type rw) | |
9c06b0b4 | 3951 | { |
328d42d8 SM |
3952 | target_ops *target = current_inferior ()->top_target (); |
3953 | ||
3954 | return target->insert_mask_watchpoint (addr, mask, rw); | |
9c06b0b4 TJB |
3955 | } |
3956 | ||
3957 | /* The documentation for this function is in its prototype declaration in | |
3958 | target.h. */ | |
3959 | ||
3960 | int | |
f4b0a671 SM |
3961 | target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, |
3962 | enum target_hw_bp_type rw) | |
9c06b0b4 | 3963 | { |
328d42d8 SM |
3964 | target_ops *target = current_inferior ()->top_target (); |
3965 | ||
3966 | return target->remove_mask_watchpoint (addr, mask, rw); | |
9c06b0b4 TJB |
3967 | } |
3968 | ||
3969 | /* The documentation for this function is in its prototype declaration | |
3970 | in target.h. */ | |
3971 | ||
3972 | int | |
3973 | target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask) | |
3974 | { | |
328d42d8 SM |
3975 | target_ops *target = current_inferior ()->top_target (); |
3976 | ||
3977 | return target->masked_watch_num_registers (addr, mask); | |
9c06b0b4 TJB |
3978 | } |
3979 | ||
f1310107 TJB |
3980 | /* The documentation for this function is in its prototype declaration |
3981 | in target.h. */ | |
3982 | ||
3983 | int | |
3984 | target_ranged_break_num_registers (void) | |
3985 | { | |
328d42d8 | 3986 | return current_inferior ()->top_target ()->ranged_break_num_registers (); |
f1310107 TJB |
3987 | } |
3988 | ||
02d27625 MM |
3989 | /* See target.h. */ |
3990 | ||
02d27625 | 3991 | struct btrace_target_info * |
696c0d5e | 3992 | target_enable_btrace (thread_info *tp, const struct btrace_config *conf) |
02d27625 | 3993 | { |
696c0d5e | 3994 | return current_inferior ()->top_target ()->enable_btrace (tp, conf); |
02d27625 MM |
3995 | } |
3996 | ||
3997 | /* See target.h. */ | |
3998 | ||
3999 | void | |
4000 | target_disable_btrace (struct btrace_target_info *btinfo) | |
4001 | { | |
328d42d8 | 4002 | current_inferior ()->top_target ()->disable_btrace (btinfo); |
02d27625 MM |
4003 | } |
4004 | ||
4005 | /* See target.h. */ | |
4006 | ||
4007 | void | |
4008 | target_teardown_btrace (struct btrace_target_info *btinfo) | |
4009 | { | |
328d42d8 | 4010 | current_inferior ()->top_target ()->teardown_btrace (btinfo); |
02d27625 MM |
4011 | } |
4012 | ||
4013 | /* See target.h. */ | |
4014 | ||
969c39fb | 4015 | enum btrace_error |
734b0e4b | 4016 | target_read_btrace (struct btrace_data *btrace, |
969c39fb | 4017 | struct btrace_target_info *btinfo, |
02d27625 MM |
4018 | enum btrace_read_type type) |
4019 | { | |
328d42d8 SM |
4020 | target_ops *target = current_inferior ()->top_target (); |
4021 | ||
4022 | return target->read_btrace (btrace, btinfo, type); | |
02d27625 MM |
4023 | } |
4024 | ||
d02ed0bb MM |
4025 | /* See target.h. */ |
4026 | ||
f4abbc16 MM |
4027 | const struct btrace_config * |
4028 | target_btrace_conf (const struct btrace_target_info *btinfo) | |
4029 | { | |
328d42d8 | 4030 | return current_inferior ()->top_target ()->btrace_conf (btinfo); |
f4abbc16 MM |
4031 | } |
4032 | ||
4033 | /* See target.h. */ | |
4034 | ||
7c1687a9 MM |
4035 | void |
4036 | target_stop_recording (void) | |
4037 | { | |
328d42d8 | 4038 | current_inferior ()->top_target ()->stop_recording (); |
7c1687a9 MM |
4039 | } |
4040 | ||
4041 | /* See target.h. */ | |
4042 | ||
d02ed0bb | 4043 | void |
85e1311a | 4044 | target_save_record (const char *filename) |
d02ed0bb | 4045 | { |
328d42d8 | 4046 | current_inferior ()->top_target ()->save_record (filename); |
d02ed0bb MM |
4047 | } |
4048 | ||
4049 | /* See target.h. */ | |
4050 | ||
4051 | int | |
f6ac5f3d | 4052 | target_supports_delete_record () |
d02ed0bb | 4053 | { |
328d42d8 | 4054 | return current_inferior ()->top_target ()->supports_delete_record (); |
d02ed0bb MM |
4055 | } |
4056 | ||
4057 | /* See target.h. */ | |
4058 | ||
4059 | void | |
4060 | target_delete_record (void) | |
4061 | { | |
328d42d8 | 4062 | current_inferior ()->top_target ()->delete_record (); |
d02ed0bb MM |
4063 | } |
4064 | ||
4065 | /* See target.h. */ | |
4066 | ||
b158a20f TW |
4067 | enum record_method |
4068 | target_record_method (ptid_t ptid) | |
4069 | { | |
328d42d8 | 4070 | return current_inferior ()->top_target ()->record_method (ptid); |
b158a20f TW |
4071 | } |
4072 | ||
4073 | /* See target.h. */ | |
4074 | ||
d02ed0bb | 4075 | int |
a52eab48 | 4076 | target_record_is_replaying (ptid_t ptid) |
d02ed0bb | 4077 | { |
328d42d8 | 4078 | return current_inferior ()->top_target ()->record_is_replaying (ptid); |
d02ed0bb MM |
4079 | } |
4080 | ||
4081 | /* See target.h. */ | |
4082 | ||
7ff27e9b MM |
4083 | int |
4084 | target_record_will_replay (ptid_t ptid, int dir) | |
4085 | { | |
328d42d8 | 4086 | return current_inferior ()->top_target ()->record_will_replay (ptid, dir); |
7ff27e9b MM |
4087 | } |
4088 | ||
4089 | /* See target.h. */ | |
4090 | ||
797094dd MM |
4091 | void |
4092 | target_record_stop_replaying (void) | |
4093 | { | |
328d42d8 | 4094 | current_inferior ()->top_target ()->record_stop_replaying (); |
797094dd MM |
4095 | } |
4096 | ||
4097 | /* See target.h. */ | |
4098 | ||
d02ed0bb MM |
4099 | void |
4100 | target_goto_record_begin (void) | |
4101 | { | |
328d42d8 | 4102 | current_inferior ()->top_target ()->goto_record_begin (); |
d02ed0bb MM |
4103 | } |
4104 | ||
4105 | /* See target.h. */ | |
4106 | ||
4107 | void | |
4108 | target_goto_record_end (void) | |
4109 | { | |
328d42d8 | 4110 | current_inferior ()->top_target ()->goto_record_end (); |
d02ed0bb MM |
4111 | } |
4112 | ||
4113 | /* See target.h. */ | |
4114 | ||
4115 | void | |
4116 | target_goto_record (ULONGEST insn) | |
4117 | { | |
328d42d8 | 4118 | current_inferior ()->top_target ()->goto_record (insn); |
d02ed0bb MM |
4119 | } |
4120 | ||
67c86d06 MM |
4121 | /* See target.h. */ |
4122 | ||
4123 | void | |
9a24775b | 4124 | target_insn_history (int size, gdb_disassembly_flags flags) |
67c86d06 | 4125 | { |
328d42d8 | 4126 | current_inferior ()->top_target ()->insn_history (size, flags); |
67c86d06 MM |
4127 | } |
4128 | ||
4129 | /* See target.h. */ | |
4130 | ||
4131 | void | |
9a24775b PA |
4132 | target_insn_history_from (ULONGEST from, int size, |
4133 | gdb_disassembly_flags flags) | |
67c86d06 | 4134 | { |
328d42d8 | 4135 | current_inferior ()->top_target ()->insn_history_from (from, size, flags); |
67c86d06 MM |
4136 | } |
4137 | ||
4138 | /* See target.h. */ | |
4139 | ||
4140 | void | |
9a24775b PA |
4141 | target_insn_history_range (ULONGEST begin, ULONGEST end, |
4142 | gdb_disassembly_flags flags) | |
67c86d06 | 4143 | { |
328d42d8 | 4144 | current_inferior ()->top_target ()->insn_history_range (begin, end, flags); |
67c86d06 MM |
4145 | } |
4146 | ||
15984c13 MM |
4147 | /* See target.h. */ |
4148 | ||
4149 | void | |
0cb7c7b0 | 4150 | target_call_history (int size, record_print_flags flags) |
15984c13 | 4151 | { |
328d42d8 | 4152 | current_inferior ()->top_target ()->call_history (size, flags); |
15984c13 MM |
4153 | } |
4154 | ||
4155 | /* See target.h. */ | |
4156 | ||
4157 | void | |
0cb7c7b0 | 4158 | target_call_history_from (ULONGEST begin, int size, record_print_flags flags) |
15984c13 | 4159 | { |
328d42d8 | 4160 | current_inferior ()->top_target ()->call_history_from (begin, size, flags); |
15984c13 MM |
4161 | } |
4162 | ||
4163 | /* See target.h. */ | |
4164 | ||
4165 | void | |
0cb7c7b0 | 4166 | target_call_history_range (ULONGEST begin, ULONGEST end, record_print_flags flags) |
15984c13 | 4167 | { |
328d42d8 | 4168 | current_inferior ()->top_target ()->call_history_range (begin, end, flags); |
15984c13 MM |
4169 | } |
4170 | ||
ea001bdc MM |
4171 | /* See target.h. */ |
4172 | ||
4173 | const struct frame_unwind * | |
4174 | target_get_unwinder (void) | |
4175 | { | |
328d42d8 | 4176 | return current_inferior ()->top_target ()->get_unwinder (); |
ea001bdc MM |
4177 | } |
4178 | ||
4179 | /* See target.h. */ | |
4180 | ||
4181 | const struct frame_unwind * | |
4182 | target_get_tailcall_unwinder (void) | |
4183 | { | |
328d42d8 | 4184 | return current_inferior ()->top_target ()->get_tailcall_unwinder (); |
ea001bdc MM |
4185 | } |
4186 | ||
5fff78c4 MM |
4187 | /* See target.h. */ |
4188 | ||
4189 | void | |
4190 | target_prepare_to_generate_core (void) | |
4191 | { | |
328d42d8 | 4192 | current_inferior ()->top_target ()->prepare_to_generate_core (); |
5fff78c4 MM |
4193 | } |
4194 | ||
4195 | /* See target.h. */ | |
4196 | ||
4197 | void | |
4198 | target_done_generating_core (void) | |
4199 | { | |
328d42d8 | 4200 | current_inferior ()->top_target ()->done_generating_core (); |
5fff78c4 MM |
4201 | } |
4202 | ||
c906108c | 4203 | \f |
c5aa993b JM |
4204 | |
4205 | static char targ_desc[] = | |
3e43a32a MS |
4206 | "Names of targets and files being debugged.\nShows the entire \ |
4207 | stack of targets currently in use (including the exec-file,\n\ | |
c906108c SS |
4208 | core-file, and process, if any), as well as the symbol file name."; |
4209 | ||
a53f3625 | 4210 | static void |
a30bf1f1 TT |
4211 | default_rcmd (struct target_ops *self, const char *command, |
4212 | struct ui_file *output) | |
a53f3625 TT |
4213 | { |
4214 | error (_("\"monitor\" command not supported by this target.")); | |
4215 | } | |
4216 | ||
96baa820 | 4217 | static void |
0b39b52e | 4218 | do_monitor_command (const char *cmd, int from_tty) |
96baa820 | 4219 | { |
96baa820 JM |
4220 | target_rcmd (cmd, gdb_stdtarg); |
4221 | } | |
4222 | ||
78cbbba8 LM |
4223 | /* Erases all the memory regions marked as flash. CMD and FROM_TTY are |
4224 | ignored. */ | |
4225 | ||
4226 | void | |
0b39b52e | 4227 | flash_erase_command (const char *cmd, int from_tty) |
78cbbba8 LM |
4228 | { |
4229 | /* Used to communicate termination of flash operations to the target. */ | |
4230 | bool found_flash_region = false; | |
99d9c3b9 | 4231 | gdbarch *gdbarch = current_inferior ()->arch (); |
78cbbba8 | 4232 | |
a664f67e | 4233 | std::vector<mem_region> mem_regions = target_memory_map (); |
78cbbba8 LM |
4234 | |
4235 | /* Iterate over all memory regions. */ | |
a664f67e | 4236 | for (const mem_region &m : mem_regions) |
78cbbba8 | 4237 | { |
78cbbba8 | 4238 | /* Is this a flash memory region? */ |
a664f67e | 4239 | if (m.attrib.mode == MEM_FLASH) |
dda83cd7 SM |
4240 | { |
4241 | found_flash_region = true; | |
4242 | target_flash_erase (m.lo, m.hi - m.lo); | |
78cbbba8 | 4243 | |
76f9c9cf | 4244 | ui_out_emit_tuple tuple_emitter (current_uiout, "erased-regions"); |
78cbbba8 | 4245 | |
dda83cd7 SM |
4246 | current_uiout->message (_("Erasing flash memory region at address ")); |
4247 | current_uiout->field_core_addr ("address", gdbarch, m.lo); | |
4248 | current_uiout->message (", size = "); | |
4249 | current_uiout->field_string ("size", hex_string (m.hi - m.lo)); | |
4250 | current_uiout->message ("\n"); | |
4251 | } | |
78cbbba8 LM |
4252 | } |
4253 | ||
4254 | /* Did we do any flash operations? If so, we need to finalize them. */ | |
4255 | if (found_flash_region) | |
4256 | target_flash_done (); | |
4257 | else | |
4258 | current_uiout->message (_("No flash memory regions found.\n")); | |
4259 | } | |
4260 | ||
87680a14 JB |
4261 | /* Print the name of each layers of our target stack. */ |
4262 | ||
4263 | static void | |
d3cb6b99 | 4264 | maintenance_print_target_stack (const char *cmd, int from_tty) |
87680a14 | 4265 | { |
6cb06a8c | 4266 | gdb_printf (_("The current target stack is:\n")); |
87680a14 | 4267 | |
328d42d8 SM |
4268 | for (target_ops *t = current_inferior ()->top_target (); |
4269 | t != NULL; | |
4270 | t = t->beneath ()) | |
87680a14 | 4271 | { |
66b4deae | 4272 | if (t->stratum () == debug_stratum) |
f6ac5f3d | 4273 | continue; |
6cb06a8c | 4274 | gdb_printf (" - %s (%s)\n", t->shortname (), t->longname ()); |
87680a14 JB |
4275 | } |
4276 | } | |
4277 | ||
372316f1 PA |
4278 | /* See target.h. */ |
4279 | ||
4280 | void | |
4a570176 | 4281 | target_async (bool enable) |
372316f1 | 4282 | { |
bf94662b AB |
4283 | /* If we are trying to enable async mode then it must be the case that |
4284 | async mode is possible for this target. */ | |
4285 | gdb_assert (!enable || target_can_async_p ()); | |
372316f1 | 4286 | infrun_async (enable); |
328d42d8 | 4287 | current_inferior ()->top_target ()->async (enable); |
372316f1 PA |
4288 | } |
4289 | ||
65706a29 PA |
4290 | /* See target.h. */ |
4291 | ||
4292 | void | |
2db17c87 | 4293 | target_thread_events (bool enable) |
65706a29 | 4294 | { |
328d42d8 | 4295 | current_inferior ()->top_target ()->thread_events (enable); |
65706a29 PA |
4296 | } |
4297 | ||
65c459ab PA |
4298 | /* See target.h. */ |
4299 | ||
4300 | bool | |
4301 | target_supports_set_thread_options (gdb_thread_options options) | |
4302 | { | |
4303 | inferior *inf = current_inferior (); | |
4304 | return inf->top_target ()->supports_set_thread_options (options); | |
4305 | } | |
4306 | ||
329ea579 PA |
4307 | /* Controls if targets can report that they can/are async. This is |
4308 | just for maintainers to use when debugging gdb. */ | |
491144b5 | 4309 | bool target_async_permitted = true; |
c6ebd6cf | 4310 | |
c6ebd6cf | 4311 | static void |
fdf1350d | 4312 | set_maint_target_async (bool permitted) |
c6ebd6cf | 4313 | { |
c35b1492 | 4314 | if (have_live_inferiors ()) |
fdf1350d | 4315 | error (_("Cannot change this setting while the inferior is running.")); |
c6ebd6cf | 4316 | |
fdf1350d SM |
4317 | target_async_permitted = permitted; |
4318 | } | |
4319 | ||
4320 | static bool | |
4321 | get_maint_target_async () | |
4322 | { | |
4323 | return target_async_permitted; | |
c6ebd6cf VP |
4324 | } |
4325 | ||
4326 | static void | |
fdf1350d SM |
4327 | show_maint_target_async (ui_file *file, int from_tty, |
4328 | cmd_list_element *c, const char *value) | |
c6ebd6cf | 4329 | { |
6cb06a8c TT |
4330 | gdb_printf (file, |
4331 | _("Controlling the inferior in " | |
4332 | "asynchronous mode is %s.\n"), value); | |
c6ebd6cf VP |
4333 | } |
4334 | ||
fbea99ea PA |
4335 | /* Return true if the target operates in non-stop mode even with "set |
4336 | non-stop off". */ | |
4337 | ||
4338 | static int | |
4339 | target_always_non_stop_p (void) | |
4340 | { | |
328d42d8 | 4341 | return current_inferior ()->top_target ()->always_non_stop_p (); |
fbea99ea PA |
4342 | } |
4343 | ||
4344 | /* See target.h. */ | |
4345 | ||
6ff267e1 SM |
4346 | bool |
4347 | target_is_non_stop_p () | |
fbea99ea | 4348 | { |
e5b9b39f PA |
4349 | return ((non_stop |
4350 | || target_non_stop_enabled == AUTO_BOOLEAN_TRUE | |
4351 | || (target_non_stop_enabled == AUTO_BOOLEAN_AUTO | |
4352 | && target_always_non_stop_p ())) | |
4353 | && target_can_async_p ()); | |
fbea99ea PA |
4354 | } |
4355 | ||
a0714d30 TBA |
4356 | /* See target.h. */ |
4357 | ||
4358 | bool | |
4359 | exists_non_stop_target () | |
4360 | { | |
4361 | if (target_is_non_stop_p ()) | |
4362 | return true; | |
4363 | ||
4364 | scoped_restore_current_thread restore_thread; | |
4365 | ||
4366 | for (inferior *inf : all_inferiors ()) | |
4367 | { | |
4368 | switch_to_inferior_no_thread (inf); | |
4369 | if (target_is_non_stop_p ()) | |
4370 | return true; | |
4371 | } | |
4372 | ||
4373 | return false; | |
4374 | } | |
4375 | ||
fbea99ea PA |
4376 | /* Controls if targets can report that they always run in non-stop |
4377 | mode. This is just for maintainers to use when debugging gdb. */ | |
4378 | enum auto_boolean target_non_stop_enabled = AUTO_BOOLEAN_AUTO; | |
4379 | ||
fdf1350d | 4380 | /* Set callback for maint target-non-stop setting. */ |
fbea99ea PA |
4381 | |
4382 | static void | |
fdf1350d | 4383 | set_maint_target_non_stop (auto_boolean enabled) |
fbea99ea PA |
4384 | { |
4385 | if (have_live_inferiors ()) | |
fdf1350d | 4386 | error (_("Cannot change this setting while the inferior is running.")); |
fbea99ea | 4387 | |
fdf1350d | 4388 | target_non_stop_enabled = enabled; |
fbea99ea PA |
4389 | } |
4390 | ||
fdf1350d SM |
4391 | /* Get callback for maint target-non-stop setting. */ |
4392 | ||
4393 | static auto_boolean | |
4394 | get_maint_target_non_stop () | |
4395 | { | |
4396 | return target_non_stop_enabled; | |
4397 | } | |
fbea99ea PA |
4398 | |
4399 | static void | |
fdf1350d SM |
4400 | show_maint_target_non_stop (ui_file *file, int from_tty, |
4401 | cmd_list_element *c, const char *value) | |
fbea99ea PA |
4402 | { |
4403 | if (target_non_stop_enabled == AUTO_BOOLEAN_AUTO) | |
6cb06a8c TT |
4404 | gdb_printf (file, |
4405 | _("Whether the target is always in non-stop mode " | |
4406 | "is %s (currently %s).\n"), value, | |
4407 | target_always_non_stop_p () ? "on" : "off"); | |
fbea99ea | 4408 | else |
6cb06a8c TT |
4409 | gdb_printf (file, |
4410 | _("Whether the target is always in non-stop mode " | |
4411 | "is %s.\n"), value); | |
fbea99ea PA |
4412 | } |
4413 | ||
d914c394 SS |
4414 | /* Temporary copies of permission settings. */ |
4415 | ||
491144b5 CB |
4416 | static bool may_write_registers_1 = true; |
4417 | static bool may_write_memory_1 = true; | |
4418 | static bool may_insert_breakpoints_1 = true; | |
4419 | static bool may_insert_tracepoints_1 = true; | |
4420 | static bool may_insert_fast_tracepoints_1 = true; | |
4421 | static bool may_stop_1 = true; | |
d914c394 SS |
4422 | |
4423 | /* Make the user-set values match the real values again. */ | |
4424 | ||
4425 | void | |
4426 | update_target_permissions (void) | |
4427 | { | |
4428 | may_write_registers_1 = may_write_registers; | |
4429 | may_write_memory_1 = may_write_memory; | |
4430 | may_insert_breakpoints_1 = may_insert_breakpoints; | |
4431 | may_insert_tracepoints_1 = may_insert_tracepoints; | |
4432 | may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints; | |
4433 | may_stop_1 = may_stop; | |
4434 | } | |
4435 | ||
4436 | /* The one function handles (most of) the permission flags in the same | |
4437 | way. */ | |
4438 | ||
4439 | static void | |
eb4c3f4a | 4440 | set_target_permissions (const char *args, int from_tty, |
d914c394 SS |
4441 | struct cmd_list_element *c) |
4442 | { | |
55f6301a | 4443 | if (target_has_execution ()) |
d914c394 SS |
4444 | { |
4445 | update_target_permissions (); | |
4446 | error (_("Cannot change this setting while the inferior is running.")); | |
4447 | } | |
4448 | ||
4449 | /* Make the real values match the user-changed values. */ | |
d914c394 SS |
4450 | may_insert_breakpoints = may_insert_breakpoints_1; |
4451 | may_insert_tracepoints = may_insert_tracepoints_1; | |
4452 | may_insert_fast_tracepoints = may_insert_fast_tracepoints_1; | |
4453 | may_stop = may_stop_1; | |
4454 | update_observer_mode (); | |
4455 | } | |
4456 | ||
d8a001f5 | 4457 | /* Set some permissions independently of observer mode. */ |
d914c394 SS |
4458 | |
4459 | static void | |
d8a001f5 TT |
4460 | set_write_memory_registers_permission (const char *args, int from_tty, |
4461 | struct cmd_list_element *c) | |
d914c394 SS |
4462 | { |
4463 | /* Make the real values match the user-changed values. */ | |
4464 | may_write_memory = may_write_memory_1; | |
d8a001f5 | 4465 | may_write_registers = may_write_registers_1; |
d914c394 SS |
4466 | update_observer_mode (); |
4467 | } | |
4468 | ||
6c265988 SM |
4469 | void _initialize_target (); |
4470 | ||
c906108c | 4471 | void |
5b6d1e4f | 4472 | _initialize_target () |
c906108c | 4473 | { |
f6ac5f3d | 4474 | the_debug_target = new debug_target (); |
c906108c | 4475 | |
11db9430 SM |
4476 | add_info ("target", info_target_command, targ_desc); |
4477 | add_info ("files", info_target_command, targ_desc); | |
c906108c | 4478 | |
ccce17b0 | 4479 | add_setshow_zuinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
85c07804 AC |
4480 | Set target debugging."), _("\ |
4481 | Show target debugging."), _("\ | |
333dabeb | 4482 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
3cecbbbe TT |
4483 | verbose."), |
4484 | set_targetdebug, | |
ccce17b0 YQ |
4485 | show_targetdebug, |
4486 | &setdebuglist, &showdebuglist); | |
3a11626d | 4487 | |
2bc416ba | 4488 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
4489 | &trust_readonly, _("\ |
4490 | Set mode for reading from readonly sections."), _("\ | |
4491 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
4492 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
4493 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 4494 | result in significant performance improvement for remote targets."), |
2c5b56ce | 4495 | NULL, |
920d2a44 | 4496 | show_trust_readonly, |
e707bbc2 | 4497 | &setlist, &showlist); |
96baa820 JM |
4498 | |
4499 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 4500 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 4501 | |
87680a14 | 4502 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
dda83cd7 SM |
4503 | _("Print the name of each layer of the internal target stack."), |
4504 | &maintenanceprintlist); | |
87680a14 | 4505 | |
c6ebd6cf | 4506 | add_setshow_boolean_cmd ("target-async", no_class, |
fdf1350d | 4507 | _("\ |
c6ebd6cf VP |
4508 | Set whether gdb controls the inferior in asynchronous mode."), _("\ |
4509 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
4510 | Tells gdb whether to control the inferior in asynchronous mode."), | |
fdf1350d SM |
4511 | set_maint_target_async, |
4512 | get_maint_target_async, | |
4513 | show_maint_target_async, | |
329ea579 PA |
4514 | &maintenance_set_cmdlist, |
4515 | &maintenance_show_cmdlist); | |
c6ebd6cf | 4516 | |
fbea99ea | 4517 | add_setshow_auto_boolean_cmd ("target-non-stop", no_class, |
fdf1350d | 4518 | _("\ |
fbea99ea PA |
4519 | Set whether gdb always controls the inferior in non-stop mode."), _("\ |
4520 | Show whether gdb always controls the inferior in non-stop mode."), _("\ | |
4521 | Tells gdb whether to control the inferior in non-stop mode."), | |
fdf1350d SM |
4522 | set_maint_target_non_stop, |
4523 | get_maint_target_non_stop, | |
4524 | show_maint_target_non_stop, | |
fbea99ea PA |
4525 | &maintenance_set_cmdlist, |
4526 | &maintenance_show_cmdlist); | |
4527 | ||
d914c394 SS |
4528 | add_setshow_boolean_cmd ("may-write-registers", class_support, |
4529 | &may_write_registers_1, _("\ | |
4530 | Set permission to write into registers."), _("\ | |
4531 | Show permission to write into registers."), _("\ | |
4532 | When this permission is on, GDB may write into the target's registers.\n\ | |
4533 | Otherwise, any sort of write attempt will result in an error."), | |
d8a001f5 | 4534 | set_write_memory_registers_permission, NULL, |
d914c394 SS |
4535 | &setlist, &showlist); |
4536 | ||
4537 | add_setshow_boolean_cmd ("may-write-memory", class_support, | |
4538 | &may_write_memory_1, _("\ | |
4539 | Set permission to write into target memory."), _("\ | |
4540 | Show permission to write into target memory."), _("\ | |
4541 | When this permission is on, GDB may write into the target's memory.\n\ | |
4542 | Otherwise, any sort of write attempt will result in an error."), | |
d8a001f5 | 4543 | set_write_memory_registers_permission, NULL, |
d914c394 SS |
4544 | &setlist, &showlist); |
4545 | ||
4546 | add_setshow_boolean_cmd ("may-insert-breakpoints", class_support, | |
4547 | &may_insert_breakpoints_1, _("\ | |
4548 | Set permission to insert breakpoints in the target."), _("\ | |
4549 | Show permission to insert breakpoints in the target."), _("\ | |
4550 | When this permission is on, GDB may insert breakpoints in the program.\n\ | |
4551 | Otherwise, any sort of insertion attempt will result in an error."), | |
4552 | set_target_permissions, NULL, | |
4553 | &setlist, &showlist); | |
4554 | ||
4555 | add_setshow_boolean_cmd ("may-insert-tracepoints", class_support, | |
4556 | &may_insert_tracepoints_1, _("\ | |
4557 | Set permission to insert tracepoints in the target."), _("\ | |
4558 | Show permission to insert tracepoints in the target."), _("\ | |
4559 | When this permission is on, GDB may insert tracepoints in the program.\n\ | |
4560 | Otherwise, any sort of insertion attempt will result in an error."), | |
4561 | set_target_permissions, NULL, | |
4562 | &setlist, &showlist); | |
4563 | ||
4564 | add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support, | |
4565 | &may_insert_fast_tracepoints_1, _("\ | |
4566 | Set permission to insert fast tracepoints in the target."), _("\ | |
4567 | Show permission to insert fast tracepoints in the target."), _("\ | |
4568 | When this permission is on, GDB may insert fast tracepoints.\n\ | |
4569 | Otherwise, any sort of insertion attempt will result in an error."), | |
4570 | set_target_permissions, NULL, | |
4571 | &setlist, &showlist); | |
4572 | ||
4573 | add_setshow_boolean_cmd ("may-interrupt", class_support, | |
4574 | &may_stop_1, _("\ | |
4575 | Set permission to interrupt or signal the target."), _("\ | |
4576 | Show permission to interrupt or signal the target."), _("\ | |
4577 | When this permission is on, GDB may interrupt/stop the target's execution.\n\ | |
4578 | Otherwise, any attempt to interrupt or stop will be ignored."), | |
4579 | set_target_permissions, NULL, | |
4580 | &setlist, &showlist); | |
6a3cb8e8 | 4581 | |
78cbbba8 | 4582 | add_com ("flash-erase", no_class, flash_erase_command, |
dda83cd7 | 4583 | _("Erase all flash memory regions.")); |
78cbbba8 | 4584 | |
6a3cb8e8 PA |
4585 | add_setshow_boolean_cmd ("auto-connect-native-target", class_support, |
4586 | &auto_connect_native_target, _("\ | |
4587 | Set whether GDB may automatically connect to the native target."), _("\ | |
4588 | Show whether GDB may automatically connect to the native target."), _("\ | |
4589 | When on, and GDB is not connected to a target yet, GDB\n\ | |
4590 | attempts \"run\" and other commands with the native target."), | |
4591 | NULL, show_auto_connect_native_target, | |
4592 | &setlist, &showlist); | |
c906108c | 4593 | } |