Commit | Line | Data |
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c906108c | 1 | /* Select target systems and architectures at runtime for GDB. |
7998dfc3 | 2 | |
3666a048 | 3 | Copyright (C) 1990-2021 Free Software Foundation, Inc. |
7998dfc3 | 4 | |
c906108c SS |
5 | Contributed by Cygnus Support. |
6 | ||
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
c906108c | 23 | #include "target.h" |
68c765e2 | 24 | #include "target-dcache.h" |
c906108c SS |
25 | #include "gdbcmd.h" |
26 | #include "symtab.h" | |
27 | #include "inferior.h" | |
45741a9c | 28 | #include "infrun.h" |
c906108c SS |
29 | #include "bfd.h" |
30 | #include "symfile.h" | |
31 | #include "objfiles.h" | |
4930751a | 32 | #include "dcache.h" |
c906108c | 33 | #include <signal.h> |
4e052eda | 34 | #include "regcache.h" |
b6591e8b | 35 | #include "gdbcore.h" |
424163ea | 36 | #include "target-descriptions.h" |
e1ac3328 | 37 | #include "gdbthread.h" |
b9db4ced | 38 | #include "solib.h" |
07b82ea5 | 39 | #include "exec.h" |
edb3359d | 40 | #include "inline-frame.h" |
2f4d8875 | 41 | #include "tracepoint.h" |
7313baad | 42 | #include "gdb/fileio.h" |
268a13a5 | 43 | #include "gdbsupport/agent.h" |
8de71aab | 44 | #include "auxv.h" |
a7068b60 | 45 | #include "target-debug.h" |
41fd2b0f PA |
46 | #include "top.h" |
47 | #include "event-top.h" | |
325fac50 | 48 | #include <algorithm> |
268a13a5 | 49 | #include "gdbsupport/byte-vector.h" |
4a72de73 | 50 | #include "gdbsupport/search.h" |
e671cd59 | 51 | #include "terminal.h" |
d9f719f1 | 52 | #include <unordered_map> |
121b3efd | 53 | #include "target-connection.h" |
670e35fa | 54 | #include "valprint.h" |
c906108c | 55 | |
f0f9ff95 TT |
56 | static void generic_tls_error (void) ATTRIBUTE_NORETURN; |
57 | ||
0a4f40a2 | 58 | static void default_terminal_info (struct target_ops *, const char *, int); |
c906108c | 59 | |
5009afc5 AS |
60 | static int default_watchpoint_addr_within_range (struct target_ops *, |
61 | CORE_ADDR, CORE_ADDR, int); | |
62 | ||
31568a15 TT |
63 | static int default_region_ok_for_hw_watchpoint (struct target_ops *, |
64 | CORE_ADDR, int); | |
e0d24f8d | 65 | |
a30bf1f1 | 66 | static void default_rcmd (struct target_ops *, const char *, struct ui_file *); |
a53f3625 | 67 | |
4229b31d TT |
68 | static ptid_t default_get_ada_task_ptid (struct target_ops *self, |
69 | long lwp, long tid); | |
70 | ||
8d657035 TT |
71 | static void default_mourn_inferior (struct target_ops *self); |
72 | ||
58a5184e TT |
73 | static int default_search_memory (struct target_ops *ops, |
74 | CORE_ADDR start_addr, | |
75 | ULONGEST search_space_len, | |
76 | const gdb_byte *pattern, | |
77 | ULONGEST pattern_len, | |
78 | CORE_ADDR *found_addrp); | |
79 | ||
936d2992 PA |
80 | static int default_verify_memory (struct target_ops *self, |
81 | const gdb_byte *data, | |
82 | CORE_ADDR memaddr, ULONGEST size); | |
83 | ||
c25c4a8b | 84 | static void tcomplain (void) ATTRIBUTE_NORETURN; |
c906108c | 85 | |
a121b7c1 | 86 | static struct target_ops *find_default_run_target (const char *); |
c906108c | 87 | |
0b5a2719 TT |
88 | static int dummy_find_memory_regions (struct target_ops *self, |
89 | find_memory_region_ftype ignore1, | |
90 | void *ignore2); | |
91 | ||
24f5300a SM |
92 | static gdb::unique_xmalloc_ptr<char> dummy_make_corefile_notes |
93 | (struct target_ops *self, bfd *ignore1, int *ignore2); | |
16f796b1 | 94 | |
a068643d | 95 | static std::string default_pid_to_str (struct target_ops *ops, ptid_t ptid); |
770234d3 | 96 | |
fe31bf5b TT |
97 | static enum exec_direction_kind default_execution_direction |
98 | (struct target_ops *self); | |
99 | ||
d9f719f1 PA |
100 | /* Mapping between target_info objects (which have address identity) |
101 | and corresponding open/factory function/callback. Each add_target | |
102 | call adds one entry to this map, and registers a "target | |
103 | TARGET_NAME" command that when invoked calls the factory registered | |
104 | here. The target_info object is associated with the command via | |
105 | the command's context. */ | |
106 | static std::unordered_map<const target_info *, target_open_ftype *> | |
107 | target_factories; | |
c906108c | 108 | |
06b5b831 | 109 | /* The singleton debug target. */ |
c906108c | 110 | |
f6ac5f3d | 111 | static struct target_ops *the_debug_target; |
c906108c SS |
112 | |
113 | /* Top of target stack. */ | |
c906108c SS |
114 | /* The target structure we are currently using to talk to a process |
115 | or file or whatever "inferior" we have. */ | |
116 | ||
8b88a78e PA |
117 | target_ops * |
118 | current_top_target () | |
119 | { | |
5b6d1e4f | 120 | return current_inferior ()->top_target (); |
8b88a78e | 121 | } |
c906108c SS |
122 | |
123 | /* Command list for target. */ | |
124 | ||
125 | static struct cmd_list_element *targetlist = NULL; | |
126 | ||
491144b5 | 127 | /* True if we should trust readonly sections from the |
cf7a04e8 DJ |
128 | executable when reading memory. */ |
129 | ||
491144b5 | 130 | static bool trust_readonly = false; |
cf7a04e8 | 131 | |
8defab1a DJ |
132 | /* Nonzero if we should show true memory content including |
133 | memory breakpoint inserted by gdb. */ | |
134 | ||
135 | static int show_memory_breakpoints = 0; | |
136 | ||
d914c394 SS |
137 | /* These globals control whether GDB attempts to perform these |
138 | operations; they are useful for targets that need to prevent | |
30baf67b | 139 | inadvertent disruption, such as in non-stop mode. */ |
d914c394 | 140 | |
491144b5 | 141 | bool may_write_registers = true; |
d914c394 | 142 | |
491144b5 | 143 | bool may_write_memory = true; |
d914c394 | 144 | |
491144b5 | 145 | bool may_insert_breakpoints = true; |
d914c394 | 146 | |
491144b5 | 147 | bool may_insert_tracepoints = true; |
d914c394 | 148 | |
491144b5 | 149 | bool may_insert_fast_tracepoints = true; |
d914c394 | 150 | |
491144b5 | 151 | bool may_stop = true; |
d914c394 | 152 | |
c906108c SS |
153 | /* Non-zero if we want to see trace of target level stuff. */ |
154 | ||
ccce17b0 | 155 | static unsigned int targetdebug = 0; |
3cecbbbe TT |
156 | |
157 | static void | |
eb4c3f4a | 158 | set_targetdebug (const char *args, int from_tty, struct cmd_list_element *c) |
3cecbbbe | 159 | { |
f6ac5f3d | 160 | if (targetdebug) |
02980c56 | 161 | current_inferior ()->push_target (the_debug_target); |
f6ac5f3d | 162 | else |
fadf6add | 163 | current_inferior ()->unpush_target (the_debug_target); |
3cecbbbe TT |
164 | } |
165 | ||
920d2a44 AC |
166 | static void |
167 | show_targetdebug (struct ui_file *file, int from_tty, | |
168 | struct cmd_list_element *c, const char *value) | |
169 | { | |
170 | fprintf_filtered (file, _("Target debugging is %s.\n"), value); | |
171 | } | |
c906108c | 172 | |
c35b1492 | 173 | int |
a739972c | 174 | target_has_memory () |
c35b1492 | 175 | { |
b6a8c27b | 176 | for (target_ops *t = current_top_target (); t != NULL; t = t->beneath ()) |
f6ac5f3d | 177 | if (t->has_memory ()) |
c35b1492 PA |
178 | return 1; |
179 | ||
180 | return 0; | |
181 | } | |
182 | ||
183 | int | |
841de120 | 184 | target_has_stack () |
c35b1492 | 185 | { |
b6a8c27b | 186 | for (target_ops *t = current_top_target (); t != NULL; t = t->beneath ()) |
f6ac5f3d | 187 | if (t->has_stack ()) |
c35b1492 PA |
188 | return 1; |
189 | ||
190 | return 0; | |
191 | } | |
192 | ||
193 | int | |
9dccd06e | 194 | target_has_registers () |
c35b1492 | 195 | { |
b6a8c27b | 196 | for (target_ops *t = current_top_target (); t != NULL; t = t->beneath ()) |
f6ac5f3d | 197 | if (t->has_registers ()) |
c35b1492 PA |
198 | return 1; |
199 | ||
200 | return 0; | |
201 | } | |
202 | ||
5018ce90 | 203 | bool |
55f6301a | 204 | target_has_execution (inferior *inf) |
c35b1492 | 205 | { |
55f6301a TT |
206 | if (inf == nullptr) |
207 | inf = current_inferior (); | |
208 | ||
5b6d1e4f PA |
209 | for (target_ops *t = inf->top_target (); |
210 | t != nullptr; | |
211 | t = inf->find_target_beneath (t)) | |
5018ce90 PA |
212 | if (t->has_execution (inf)) |
213 | return true; | |
c35b1492 | 214 | |
5018ce90 | 215 | return false; |
c35b1492 PA |
216 | } |
217 | ||
d777bf0d SM |
218 | const char * |
219 | target_shortname () | |
220 | { | |
221 | return current_top_target ()->shortname (); | |
222 | } | |
223 | ||
224 | /* See target.h. */ | |
225 | ||
226 | bool | |
227 | target_attach_no_wait () | |
228 | { | |
229 | return current_top_target ()->attach_no_wait (); | |
230 | } | |
231 | ||
232 | /* See target.h. */ | |
233 | ||
234 | void | |
235 | target_post_attach (int pid) | |
236 | { | |
237 | return current_top_target ()->post_attach (pid); | |
238 | } | |
239 | ||
240 | /* See target.h. */ | |
241 | ||
242 | void | |
243 | target_prepare_to_store (regcache *regcache) | |
244 | { | |
245 | return current_top_target ()->prepare_to_store (regcache); | |
246 | } | |
247 | ||
248 | /* See target.h. */ | |
249 | ||
250 | bool | |
251 | target_supports_enable_disable_tracepoint () | |
252 | { | |
253 | return current_top_target ()->supports_enable_disable_tracepoint (); | |
254 | } | |
255 | ||
256 | bool | |
257 | target_supports_string_tracing () | |
258 | { | |
259 | return current_top_target ()->supports_string_tracing (); | |
260 | } | |
261 | ||
262 | /* See target.h. */ | |
263 | ||
264 | bool | |
265 | target_supports_evaluation_of_breakpoint_conditions () | |
266 | { | |
267 | return current_top_target ()->supports_evaluation_of_breakpoint_conditions (); | |
268 | } | |
269 | ||
270 | /* See target.h. */ | |
271 | ||
272 | bool | |
273 | target_supports_dumpcore () | |
274 | { | |
275 | return current_top_target ()->supports_dumpcore (); | |
276 | } | |
277 | ||
278 | /* See target.h. */ | |
279 | ||
280 | void | |
281 | target_dumpcore (const char *filename) | |
282 | { | |
283 | return current_top_target ()->dumpcore (filename); | |
284 | } | |
285 | ||
286 | /* See target.h. */ | |
287 | ||
288 | bool | |
289 | target_can_run_breakpoint_commands () | |
290 | { | |
291 | return current_top_target ()->can_run_breakpoint_commands (); | |
292 | } | |
293 | ||
294 | /* See target.h. */ | |
295 | ||
296 | void | |
297 | target_files_info () | |
298 | { | |
299 | return current_top_target ()->files_info (); | |
300 | } | |
301 | ||
302 | /* See target.h. */ | |
303 | ||
304 | void | |
305 | target_post_startup_inferior (ptid_t ptid) | |
306 | { | |
307 | return current_top_target ()->post_startup_inferior (ptid); | |
308 | } | |
309 | ||
310 | /* See target.h. */ | |
311 | ||
312 | int | |
313 | target_insert_fork_catchpoint (int pid) | |
314 | { | |
315 | return current_top_target ()->insert_fork_catchpoint (pid); | |
316 | } | |
317 | ||
318 | /* See target.h. */ | |
319 | ||
320 | int | |
321 | target_remove_fork_catchpoint (int pid) | |
322 | { | |
323 | return current_top_target ()->remove_fork_catchpoint (pid); | |
324 | } | |
325 | ||
326 | /* See target.h. */ | |
327 | ||
328 | int | |
329 | target_insert_vfork_catchpoint (int pid) | |
330 | { | |
331 | return current_top_target ()->insert_vfork_catchpoint (pid); | |
332 | } | |
333 | ||
334 | /* See target.h. */ | |
335 | ||
336 | int | |
337 | target_remove_vfork_catchpoint (int pid) | |
338 | { | |
339 | return current_top_target ()->remove_vfork_catchpoint (pid); | |
340 | } | |
341 | ||
342 | /* See target.h. */ | |
343 | ||
344 | int | |
345 | target_insert_exec_catchpoint (int pid) | |
346 | { | |
347 | return current_top_target ()->insert_exec_catchpoint (pid); | |
348 | } | |
349 | ||
350 | /* See target.h. */ | |
351 | ||
352 | int | |
353 | target_remove_exec_catchpoint (int pid) | |
354 | { | |
355 | return current_top_target ()->remove_exec_catchpoint (pid); | |
356 | } | |
357 | ||
358 | /* See target.h. */ | |
359 | ||
360 | int | |
361 | target_set_syscall_catchpoint (int pid, bool needed, int any_count, | |
362 | gdb::array_view<const int> syscall_counts) | |
363 | { | |
364 | return current_top_target ()->set_syscall_catchpoint (pid, needed, any_count, | |
365 | syscall_counts); | |
366 | } | |
367 | ||
368 | /* See target.h. */ | |
369 | ||
370 | void | |
371 | target_rcmd (const char *command, struct ui_file *outbuf) | |
372 | { | |
373 | return current_top_target ()->rcmd (command, outbuf); | |
374 | } | |
375 | ||
376 | /* See target.h. */ | |
377 | ||
378 | bool | |
379 | target_can_lock_scheduler () | |
380 | { | |
381 | return (current_top_target ()->get_thread_control_capabilities () | |
382 | & tc_schedlock) != 0; | |
383 | } | |
384 | ||
385 | /* See target.h. */ | |
386 | ||
387 | bool | |
388 | target_can_async_p () | |
389 | { | |
390 | return current_top_target ()->can_async_p (); | |
391 | } | |
392 | ||
393 | /* See target.h. */ | |
394 | ||
395 | bool | |
396 | target_is_async_p () | |
397 | { | |
398 | return current_top_target ()->is_async_p (); | |
399 | } | |
400 | ||
401 | exec_direction_kind | |
402 | target_execution_direction () | |
403 | { | |
404 | return current_top_target ()->execution_direction (); | |
405 | } | |
406 | ||
407 | /* See target.h. */ | |
408 | ||
409 | const char * | |
410 | target_extra_thread_info (thread_info *tp) | |
411 | { | |
412 | return current_top_target ()->extra_thread_info (tp); | |
413 | } | |
414 | ||
415 | /* See target.h. */ | |
416 | ||
417 | char * | |
418 | target_pid_to_exec_file (int pid) | |
419 | { | |
420 | return current_top_target ()->pid_to_exec_file (pid); | |
421 | } | |
422 | ||
423 | /* See target.h. */ | |
424 | ||
425 | gdbarch * | |
426 | target_thread_architecture (ptid_t ptid) | |
427 | { | |
428 | return current_top_target ()->thread_architecture (ptid); | |
429 | } | |
430 | ||
431 | /* See target.h. */ | |
432 | ||
433 | int | |
434 | target_find_memory_regions (find_memory_region_ftype func, void *data) | |
435 | { | |
436 | return current_top_target ()->find_memory_regions (func, data); | |
437 | } | |
438 | ||
439 | /* See target.h. */ | |
440 | ||
441 | gdb::unique_xmalloc_ptr<char> | |
442 | target_make_corefile_notes (bfd *bfd, int *size_p) | |
443 | { | |
444 | return current_top_target ()->make_corefile_notes (bfd, size_p); | |
445 | } | |
446 | ||
447 | gdb_byte * | |
448 | target_get_bookmark (const char *args, int from_tty) | |
449 | { | |
450 | return current_top_target ()->get_bookmark (args, from_tty); | |
451 | } | |
452 | ||
453 | void | |
454 | target_goto_bookmark (const gdb_byte *arg, int from_tty) | |
455 | { | |
456 | return current_top_target ()->goto_bookmark (arg, from_tty); | |
457 | } | |
458 | ||
459 | /* See target.h. */ | |
460 | ||
461 | bool | |
462 | target_stopped_by_watchpoint () | |
463 | { | |
464 | return current_top_target ()->stopped_by_watchpoint (); | |
465 | } | |
466 | ||
467 | /* See target.h. */ | |
468 | ||
469 | bool | |
470 | target_stopped_by_sw_breakpoint () | |
471 | { | |
472 | return current_top_target ()->stopped_by_sw_breakpoint (); | |
473 | } | |
474 | ||
475 | bool | |
476 | target_supports_stopped_by_sw_breakpoint () | |
477 | { | |
478 | return current_top_target ()->supports_stopped_by_sw_breakpoint (); | |
479 | } | |
480 | ||
481 | bool | |
482 | target_stopped_by_hw_breakpoint () | |
483 | { | |
484 | return current_top_target ()->stopped_by_hw_breakpoint (); | |
485 | } | |
486 | ||
487 | bool | |
488 | target_supports_stopped_by_hw_breakpoint () | |
489 | { | |
490 | return current_top_target ()->supports_stopped_by_hw_breakpoint (); | |
491 | } | |
492 | ||
493 | /* See target.h. */ | |
494 | ||
495 | bool | |
496 | target_have_steppable_watchpoint () | |
497 | { | |
498 | return current_top_target ()->have_steppable_watchpoint (); | |
499 | } | |
500 | ||
501 | /* See target.h. */ | |
502 | ||
503 | int | |
504 | target_can_use_hardware_watchpoint (bptype type, int cnt, int othertype) | |
505 | { | |
506 | return current_top_target ()->can_use_hw_breakpoint (type, cnt, othertype); | |
507 | } | |
508 | ||
509 | /* See target.h. */ | |
510 | ||
511 | int | |
512 | target_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
513 | { | |
514 | return current_top_target ()->region_ok_for_hw_watchpoint (addr, len); | |
515 | } | |
516 | ||
517 | ||
518 | int | |
519 | target_can_do_single_step () | |
520 | { | |
521 | return current_top_target ()->can_do_single_step (); | |
522 | } | |
523 | ||
524 | /* See target.h. */ | |
525 | ||
526 | int | |
527 | target_insert_watchpoint (CORE_ADDR addr, int len, target_hw_bp_type type, | |
528 | expression *cond) | |
529 | { | |
530 | return current_top_target ()->insert_watchpoint (addr, len, type, cond); | |
531 | } | |
532 | ||
533 | /* See target.h. */ | |
534 | ||
535 | int | |
536 | target_remove_watchpoint (CORE_ADDR addr, int len, target_hw_bp_type type, | |
537 | expression *cond) | |
538 | { | |
539 | return current_top_target ()->remove_watchpoint (addr, len, type, cond); | |
540 | } | |
541 | ||
542 | /* See target.h. */ | |
543 | ||
544 | int | |
545 | target_insert_hw_breakpoint (gdbarch *gdbarch, bp_target_info *bp_tgt) | |
546 | { | |
547 | return current_top_target ()->insert_hw_breakpoint (gdbarch, bp_tgt); | |
548 | } | |
549 | ||
550 | /* See target.h. */ | |
551 | ||
552 | int | |
553 | target_remove_hw_breakpoint (gdbarch *gdbarch, bp_target_info *bp_tgt) | |
554 | { | |
555 | return current_top_target ()->remove_hw_breakpoint (gdbarch, bp_tgt); | |
556 | } | |
557 | ||
558 | /* See target.h. */ | |
559 | ||
560 | bool | |
561 | target_can_accel_watchpoint_condition (CORE_ADDR addr, int len, int type, | |
562 | expression *cond) | |
563 | { | |
564 | return current_top_target ()->can_accel_watchpoint_condition (addr, len, type, cond); | |
565 | } | |
566 | ||
567 | /* See target.h. */ | |
568 | ||
569 | bool | |
570 | target_can_execute_reverse () | |
571 | { | |
572 | return current_top_target ()->can_execute_reverse (); | |
573 | } | |
574 | ||
575 | ptid_t | |
576 | target_get_ada_task_ptid (long lwp, long tid) | |
577 | { | |
578 | return current_top_target ()->get_ada_task_ptid (lwp, tid); | |
579 | } | |
580 | ||
581 | bool | |
582 | target_filesystem_is_local () | |
583 | { | |
584 | return current_top_target ()->filesystem_is_local (); | |
585 | } | |
586 | ||
587 | void | |
588 | target_trace_init () | |
589 | { | |
590 | return current_top_target ()->trace_init (); | |
591 | } | |
592 | ||
593 | void | |
594 | target_download_tracepoint (bp_location *location) | |
595 | { | |
596 | return current_top_target ()->download_tracepoint (location); | |
597 | } | |
598 | ||
599 | bool | |
600 | target_can_download_tracepoint () | |
601 | { | |
602 | return current_top_target ()->can_download_tracepoint (); | |
603 | } | |
604 | ||
605 | void | |
606 | target_download_trace_state_variable (const trace_state_variable &tsv) | |
607 | { | |
608 | return current_top_target ()->download_trace_state_variable (tsv); | |
609 | } | |
610 | ||
611 | void | |
612 | target_enable_tracepoint (bp_location *loc) | |
613 | { | |
614 | return current_top_target ()->enable_tracepoint (loc); | |
615 | } | |
616 | ||
617 | void | |
618 | target_disable_tracepoint (bp_location *loc) | |
619 | { | |
620 | return current_top_target ()->disable_tracepoint (loc); | |
621 | } | |
622 | ||
623 | void | |
624 | target_trace_start () | |
625 | { | |
626 | return current_top_target ()->trace_start (); | |
627 | } | |
628 | ||
629 | void | |
630 | target_trace_set_readonly_regions () | |
631 | { | |
632 | current_top_target ()->trace_set_readonly_regions (); | |
633 | } | |
634 | ||
635 | int | |
636 | target_get_trace_status (trace_status *ts) | |
637 | { | |
638 | return current_top_target ()->get_trace_status (ts); | |
639 | } | |
640 | ||
641 | void | |
642 | target_get_tracepoint_status (breakpoint *tp, uploaded_tp *utp) | |
643 | { | |
644 | return current_top_target ()->get_tracepoint_status (tp, utp); | |
645 | } | |
646 | ||
647 | void | |
648 | target_trace_stop () | |
649 | { | |
650 | return current_top_target ()->trace_stop (); | |
651 | } | |
652 | ||
653 | int | |
654 | target_trace_find (trace_find_type type, int num, | |
655 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) | |
656 | { | |
657 | return current_top_target ()->trace_find (type, num, addr1, addr2, tpp); | |
658 | } | |
659 | ||
660 | bool | |
661 | target_get_trace_state_variable_value (int tsv, LONGEST *val) | |
662 | { | |
663 | return current_top_target ()->get_trace_state_variable_value (tsv, val); | |
664 | } | |
665 | ||
666 | int | |
667 | target_save_trace_data (const char *filename) | |
668 | { | |
669 | return current_top_target ()->save_trace_data (filename); | |
670 | } | |
671 | ||
672 | int | |
673 | target_upload_tracepoints (uploaded_tp **utpp) | |
674 | { | |
675 | return current_top_target ()->upload_tracepoints (utpp); | |
676 | } | |
677 | ||
678 | int | |
679 | target_upload_trace_state_variables (uploaded_tsv **utsvp) | |
680 | { | |
681 | return current_top_target ()->upload_trace_state_variables (utsvp); | |
682 | } | |
683 | ||
684 | LONGEST | |
685 | target_get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
686 | { | |
687 | return current_top_target ()->get_raw_trace_data (buf, offset, len); | |
688 | } | |
689 | ||
690 | int | |
691 | target_get_min_fast_tracepoint_insn_len () | |
692 | { | |
693 | return current_top_target ()->get_min_fast_tracepoint_insn_len (); | |
694 | } | |
695 | ||
696 | void | |
697 | target_set_disconnected_tracing (int val) | |
698 | { | |
699 | return current_top_target ()->set_disconnected_tracing (val); | |
700 | } | |
701 | ||
702 | void | |
703 | target_set_circular_trace_buffer (int val) | |
704 | { | |
705 | return current_top_target ()->set_circular_trace_buffer (val); | |
706 | } | |
707 | ||
708 | void | |
709 | target_set_trace_buffer_size (LONGEST val) | |
710 | { | |
711 | return current_top_target ()->set_trace_buffer_size (val); | |
712 | } | |
713 | ||
714 | bool | |
715 | target_set_trace_notes (const char *user, const char *notes, | |
716 | const char *stopnotes) | |
717 | { | |
718 | return current_top_target ()->set_trace_notes (user, notes, stopnotes); | |
719 | } | |
720 | ||
721 | bool | |
722 | target_get_tib_address (ptid_t ptid, CORE_ADDR *addr) | |
723 | { | |
724 | return current_top_target ()->get_tib_address (ptid, addr); | |
725 | } | |
726 | ||
727 | void | |
728 | target_set_permissions () | |
729 | { | |
730 | return current_top_target ()->set_permissions (); | |
731 | } | |
732 | ||
733 | bool | |
734 | target_static_tracepoint_marker_at (CORE_ADDR addr, | |
735 | static_tracepoint_marker *marker) | |
736 | { | |
737 | return current_top_target ()->static_tracepoint_marker_at (addr, marker); | |
738 | } | |
739 | ||
740 | std::vector<static_tracepoint_marker> | |
741 | target_static_tracepoint_markers_by_strid (const char *marker_id) | |
742 | { | |
743 | return current_top_target ()->static_tracepoint_markers_by_strid (marker_id); | |
744 | } | |
745 | ||
746 | traceframe_info_up | |
747 | target_traceframe_info () | |
748 | { | |
749 | return current_top_target ()->traceframe_info (); | |
750 | } | |
751 | ||
752 | bool | |
753 | target_use_agent (bool use) | |
754 | { | |
755 | return current_top_target ()->use_agent (use); | |
756 | } | |
757 | ||
758 | bool | |
759 | target_can_use_agent () | |
760 | { | |
761 | return current_top_target ()->can_use_agent (); | |
762 | } | |
763 | ||
764 | bool | |
765 | target_augmented_libraries_svr4_read () | |
766 | { | |
767 | return current_top_target ()->augmented_libraries_svr4_read (); | |
768 | } | |
769 | ||
770 | bool | |
771 | target_supports_memory_tagging () | |
772 | { | |
773 | return current_top_target ()->supports_memory_tagging (); | |
774 | } | |
775 | ||
776 | bool | |
777 | target_fetch_memtags (CORE_ADDR address, size_t len, gdb::byte_vector &tags, | |
778 | int type) | |
779 | { | |
780 | return current_top_target ()->fetch_memtags (address, len, tags, type); | |
781 | } | |
782 | ||
783 | bool | |
784 | target_store_memtags (CORE_ADDR address, size_t len, | |
785 | const gdb::byte_vector &tags, int type) | |
786 | { | |
787 | return current_top_target ()->store_memtags (address, len, tags, type); | |
788 | } | |
789 | ||
790 | void | |
791 | target_log_command (const char *p) | |
792 | { | |
793 | return current_top_target ()->log_command (p); | |
794 | } | |
795 | ||
8981c758 TT |
796 | /* This is used to implement the various target commands. */ |
797 | ||
798 | static void | |
eb4c3f4a | 799 | open_target (const char *args, int from_tty, struct cmd_list_element *command) |
8981c758 | 800 | { |
d9f719f1 PA |
801 | auto *ti = static_cast<target_info *> (get_cmd_context (command)); |
802 | target_open_ftype *func = target_factories[ti]; | |
8981c758 TT |
803 | |
804 | if (targetdebug) | |
d9f719f1 PA |
805 | fprintf_unfiltered (gdb_stdlog, "-> %s->open (...)\n", |
806 | ti->shortname); | |
8981c758 | 807 | |
d9f719f1 | 808 | func (args, from_tty); |
8981c758 TT |
809 | |
810 | if (targetdebug) | |
d9f719f1 PA |
811 | fprintf_unfiltered (gdb_stdlog, "<- %s->open (%s, %d)\n", |
812 | ti->shortname, args, from_tty); | |
8981c758 TT |
813 | } |
814 | ||
d9f719f1 | 815 | /* See target.h. */ |
c22a2b88 TT |
816 | |
817 | void | |
d9f719f1 PA |
818 | add_target (const target_info &t, target_open_ftype *func, |
819 | completer_ftype *completer) | |
c22a2b88 TT |
820 | { |
821 | struct cmd_list_element *c; | |
822 | ||
d9f719f1 PA |
823 | auto &func_slot = target_factories[&t]; |
824 | if (func_slot != nullptr) | |
825 | internal_error (__FILE__, __LINE__, | |
826 | _("target already added (\"%s\")."), t.shortname); | |
827 | func_slot = func; | |
c906108c SS |
828 | |
829 | if (targetlist == NULL) | |
3b6acaee | 830 | add_basic_prefix_cmd ("target", class_run, _("\ |
1bedd215 | 831 | Connect to a target machine or process.\n\ |
c906108c SS |
832 | The first argument is the type or protocol of the target machine.\n\ |
833 | Remaining arguments are interpreted by the target protocol. For more\n\ | |
834 | information on the arguments for a particular protocol, type\n\ | |
1bedd215 | 835 | `help target ' followed by the protocol name."), |
3b6acaee | 836 | &targetlist, "target ", 0, &cmdlist); |
d9f719f1 PA |
837 | c = add_cmd (t.shortname, no_class, t.doc, &targetlist); |
838 | set_cmd_context (c, (void *) &t); | |
8981c758 | 839 | set_cmd_sfunc (c, open_target); |
9852c492 YQ |
840 | if (completer != NULL) |
841 | set_cmd_completer (c, completer); | |
842 | } | |
843 | ||
b48d48eb MM |
844 | /* See target.h. */ |
845 | ||
846 | void | |
d9f719f1 | 847 | add_deprecated_target_alias (const target_info &tinfo, const char *alias) |
b48d48eb MM |
848 | { |
849 | struct cmd_list_element *c; | |
850 | char *alt; | |
851 | ||
852 | /* If we use add_alias_cmd, here, we do not get the deprecated warning, | |
853 | see PR cli/15104. */ | |
d9f719f1 | 854 | c = add_cmd (alias, no_class, tinfo.doc, &targetlist); |
8981c758 | 855 | set_cmd_sfunc (c, open_target); |
d9f719f1 PA |
856 | set_cmd_context (c, (void *) &tinfo); |
857 | alt = xstrprintf ("target %s", tinfo.shortname); | |
b48d48eb MM |
858 | deprecate_cmd (c, alt); |
859 | } | |
860 | ||
c906108c SS |
861 | /* Stub functions */ |
862 | ||
7d85a9c0 JB |
863 | void |
864 | target_kill (void) | |
865 | { | |
8b88a78e | 866 | current_top_target ()->kill (); |
7d85a9c0 JB |
867 | } |
868 | ||
11cf8741 | 869 | void |
9cbe5fff | 870 | target_load (const char *arg, int from_tty) |
11cf8741 | 871 | { |
4e5d721f | 872 | target_dcache_invalidate (); |
8b88a78e | 873 | current_top_target ()->load (arg, from_tty); |
11cf8741 JM |
874 | } |
875 | ||
223ffa71 | 876 | /* Define it. */ |
5842f62a | 877 | |
e671cd59 PA |
878 | target_terminal_state target_terminal::m_terminal_state |
879 | = target_terminal_state::is_ours; | |
5842f62a | 880 | |
223ffa71 | 881 | /* See target/target.h. */ |
5842f62a PA |
882 | |
883 | void | |
223ffa71 | 884 | target_terminal::init (void) |
5842f62a | 885 | { |
8b88a78e | 886 | current_top_target ()->terminal_init (); |
5842f62a | 887 | |
e671cd59 | 888 | m_terminal_state = target_terminal_state::is_ours; |
5842f62a PA |
889 | } |
890 | ||
223ffa71 | 891 | /* See target/target.h. */ |
2f99e8fc | 892 | |
d9d2d8b6 | 893 | void |
223ffa71 | 894 | target_terminal::inferior (void) |
d9d2d8b6 | 895 | { |
41fd2b0f PA |
896 | struct ui *ui = current_ui; |
897 | ||
d9d2d8b6 | 898 | /* A background resume (``run&'') should leave GDB in control of the |
3b12939d PA |
899 | terminal. */ |
900 | if (ui->prompt_state != PROMPT_BLOCKED) | |
d9d2d8b6 PA |
901 | return; |
902 | ||
215d3118 PA |
903 | /* Since we always run the inferior in the main console (unless "set |
904 | inferior-tty" is in effect), when some UI other than the main one | |
223ffa71 TT |
905 | calls target_terminal::inferior, then we leave the main UI's |
906 | terminal settings as is. */ | |
215d3118 PA |
907 | if (ui != main_ui) |
908 | return; | |
909 | ||
d9d2d8b6 PA |
910 | /* If GDB is resuming the inferior in the foreground, install |
911 | inferior's terminal modes. */ | |
e671cd59 PA |
912 | |
913 | struct inferior *inf = current_inferior (); | |
914 | ||
915 | if (inf->terminal_state != target_terminal_state::is_inferior) | |
916 | { | |
8b88a78e | 917 | current_top_target ()->terminal_inferior (); |
e671cd59 PA |
918 | inf->terminal_state = target_terminal_state::is_inferior; |
919 | } | |
920 | ||
921 | m_terminal_state = target_terminal_state::is_inferior; | |
922 | ||
923 | /* If the user hit C-c before, pretend that it was hit right | |
924 | here. */ | |
925 | if (check_quit_flag ()) | |
926 | target_pass_ctrlc (); | |
927 | } | |
928 | ||
929 | /* See target/target.h. */ | |
930 | ||
931 | void | |
932 | target_terminal::restore_inferior (void) | |
933 | { | |
934 | struct ui *ui = current_ui; | |
935 | ||
936 | /* See target_terminal::inferior(). */ | |
937 | if (ui->prompt_state != PROMPT_BLOCKED || ui != main_ui) | |
938 | return; | |
939 | ||
940 | /* Restore the terminal settings of inferiors that were in the | |
941 | foreground but are now ours_for_output due to a temporary | |
942 | target_target::ours_for_output() call. */ | |
943 | ||
944 | { | |
945 | scoped_restore_current_inferior restore_inferior; | |
e671cd59 | 946 | |
84b68c77 | 947 | for (::inferior *inf : all_inferiors ()) |
e671cd59 PA |
948 | { |
949 | if (inf->terminal_state == target_terminal_state::is_ours_for_output) | |
950 | { | |
951 | set_current_inferior (inf); | |
8b88a78e | 952 | current_top_target ()->terminal_inferior (); |
e671cd59 PA |
953 | inf->terminal_state = target_terminal_state::is_inferior; |
954 | } | |
955 | } | |
956 | } | |
957 | ||
958 | m_terminal_state = target_terminal_state::is_inferior; | |
93692b58 PA |
959 | |
960 | /* If the user hit C-c before, pretend that it was hit right | |
961 | here. */ | |
962 | if (check_quit_flag ()) | |
963 | target_pass_ctrlc (); | |
5842f62a PA |
964 | } |
965 | ||
e671cd59 PA |
966 | /* Switch terminal state to DESIRED_STATE, either is_ours, or |
967 | is_ours_for_output. */ | |
968 | ||
969 | static void | |
970 | target_terminal_is_ours_kind (target_terminal_state desired_state) | |
971 | { | |
972 | scoped_restore_current_inferior restore_inferior; | |
e671cd59 PA |
973 | |
974 | /* Must do this in two passes. First, have all inferiors save the | |
975 | current terminal settings. Then, after all inferiors have add a | |
976 | chance to safely save the terminal settings, restore GDB's | |
977 | terminal settings. */ | |
978 | ||
08036331 | 979 | for (inferior *inf : all_inferiors ()) |
e671cd59 PA |
980 | { |
981 | if (inf->terminal_state == target_terminal_state::is_inferior) | |
982 | { | |
983 | set_current_inferior (inf); | |
8b88a78e | 984 | current_top_target ()->terminal_save_inferior (); |
e671cd59 PA |
985 | } |
986 | } | |
987 | ||
08036331 | 988 | for (inferior *inf : all_inferiors ()) |
e671cd59 PA |
989 | { |
990 | /* Note we don't check is_inferior here like above because we | |
991 | need to handle 'is_ours_for_output -> is_ours' too. Careful | |
992 | to never transition from 'is_ours' to 'is_ours_for_output', | |
993 | though. */ | |
994 | if (inf->terminal_state != target_terminal_state::is_ours | |
995 | && inf->terminal_state != desired_state) | |
996 | { | |
997 | set_current_inferior (inf); | |
998 | if (desired_state == target_terminal_state::is_ours) | |
8b88a78e | 999 | current_top_target ()->terminal_ours (); |
e671cd59 | 1000 | else if (desired_state == target_terminal_state::is_ours_for_output) |
8b88a78e | 1001 | current_top_target ()->terminal_ours_for_output (); |
e671cd59 PA |
1002 | else |
1003 | gdb_assert_not_reached ("unhandled desired state"); | |
1004 | inf->terminal_state = desired_state; | |
1005 | } | |
1006 | } | |
1007 | } | |
1008 | ||
223ffa71 | 1009 | /* See target/target.h. */ |
5842f62a PA |
1010 | |
1011 | void | |
223ffa71 | 1012 | target_terminal::ours () |
5842f62a | 1013 | { |
41fd2b0f PA |
1014 | struct ui *ui = current_ui; |
1015 | ||
223ffa71 | 1016 | /* See target_terminal::inferior. */ |
215d3118 PA |
1017 | if (ui != main_ui) |
1018 | return; | |
1019 | ||
e671cd59 | 1020 | if (m_terminal_state == target_terminal_state::is_ours) |
5842f62a PA |
1021 | return; |
1022 | ||
e671cd59 PA |
1023 | target_terminal_is_ours_kind (target_terminal_state::is_ours); |
1024 | m_terminal_state = target_terminal_state::is_ours; | |
5842f62a PA |
1025 | } |
1026 | ||
223ffa71 | 1027 | /* See target/target.h. */ |
5842f62a PA |
1028 | |
1029 | void | |
223ffa71 | 1030 | target_terminal::ours_for_output () |
5842f62a | 1031 | { |
215d3118 PA |
1032 | struct ui *ui = current_ui; |
1033 | ||
223ffa71 | 1034 | /* See target_terminal::inferior. */ |
215d3118 PA |
1035 | if (ui != main_ui) |
1036 | return; | |
1037 | ||
e671cd59 | 1038 | if (!target_terminal::is_inferior ()) |
5842f62a | 1039 | return; |
e671cd59 PA |
1040 | |
1041 | target_terminal_is_ours_kind (target_terminal_state::is_ours_for_output); | |
1042 | target_terminal::m_terminal_state = target_terminal_state::is_ours_for_output; | |
d9d2d8b6 | 1043 | } |
136d6dae | 1044 | |
223ffa71 TT |
1045 | /* See target/target.h. */ |
1046 | ||
1047 | void | |
1048 | target_terminal::info (const char *arg, int from_tty) | |
1049 | { | |
8b88a78e | 1050 | current_top_target ()->terminal_info (arg, from_tty); |
223ffa71 TT |
1051 | } |
1052 | ||
b0ed115f TT |
1053 | /* See target.h. */ |
1054 | ||
20f0d60d | 1055 | bool |
b0ed115f TT |
1056 | target_supports_terminal_ours (void) |
1057 | { | |
5b6d1e4f PA |
1058 | /* The current top target is the target at the top of the target |
1059 | stack of the current inferior. While normally there's always an | |
1060 | inferior, we must check for nullptr here because we can get here | |
1061 | very early during startup, before the initial inferior is first | |
1062 | created. */ | |
1063 | inferior *inf = current_inferior (); | |
20f0d60d | 1064 | |
5b6d1e4f | 1065 | if (inf == nullptr) |
20f0d60d | 1066 | return false; |
5b6d1e4f | 1067 | return inf->top_target ()->supports_terminal_ours (); |
b0ed115f TT |
1068 | } |
1069 | ||
c906108c | 1070 | static void |
fba45db2 | 1071 | tcomplain (void) |
c906108c | 1072 | { |
8a3fe4f8 | 1073 | error (_("You can't do that when your target is `%s'"), |
8b88a78e | 1074 | current_top_target ()->shortname ()); |
c906108c SS |
1075 | } |
1076 | ||
1077 | void | |
fba45db2 | 1078 | noprocess (void) |
c906108c | 1079 | { |
8a3fe4f8 | 1080 | error (_("You can't do that without a process to debug.")); |
c906108c SS |
1081 | } |
1082 | ||
c906108c | 1083 | static void |
0a4f40a2 | 1084 | default_terminal_info (struct target_ops *self, const char *args, int from_tty) |
c906108c | 1085 | { |
a3f17187 | 1086 | printf_unfiltered (_("No saved terminal information.\n")); |
c906108c SS |
1087 | } |
1088 | ||
0ef643c8 JB |
1089 | /* A default implementation for the to_get_ada_task_ptid target method. |
1090 | ||
1091 | This function builds the PTID by using both LWP and TID as part of | |
1092 | the PTID lwp and tid elements. The pid used is the pid of the | |
1093 | inferior_ptid. */ | |
1094 | ||
2c0b251b | 1095 | static ptid_t |
1e6b91a4 | 1096 | default_get_ada_task_ptid (struct target_ops *self, long lwp, long tid) |
0ef643c8 | 1097 | { |
e99b03dc | 1098 | return ptid_t (inferior_ptid.pid (), lwp, tid); |
0ef643c8 JB |
1099 | } |
1100 | ||
32231432 | 1101 | static enum exec_direction_kind |
4c612759 | 1102 | default_execution_direction (struct target_ops *self) |
32231432 | 1103 | { |
05374cfd | 1104 | if (!target_can_execute_reverse ()) |
32231432 PA |
1105 | return EXEC_FORWARD; |
1106 | else if (!target_can_async_p ()) | |
1107 | return EXEC_FORWARD; | |
1108 | else | |
1109 | gdb_assert_not_reached ("\ | |
1110 | to_execution_direction must be implemented for reverse async"); | |
1111 | } | |
1112 | ||
a1740ee1 | 1113 | /* See target.h. */ |
c906108c | 1114 | |
5b6d1e4f PA |
1115 | void |
1116 | decref_target (target_ops *t) | |
1117 | { | |
1118 | t->decref (); | |
1119 | if (t->refcount () == 0) | |
121b3efd PA |
1120 | { |
1121 | if (t->stratum () == process_stratum) | |
1122 | connection_list_remove (as_process_stratum_target (t)); | |
1123 | target_close (t); | |
1124 | } | |
5b6d1e4f PA |
1125 | } |
1126 | ||
1127 | /* See target.h. */ | |
1128 | ||
b26a4dcb | 1129 | void |
a1740ee1 | 1130 | target_stack::push (target_ops *t) |
c906108c | 1131 | { |
5b6d1e4f PA |
1132 | t->incref (); |
1133 | ||
66b4deae PA |
1134 | strata stratum = t->stratum (); |
1135 | ||
121b3efd PA |
1136 | if (stratum == process_stratum) |
1137 | connection_list_add (as_process_stratum_target (t)); | |
1138 | ||
5b6d1e4f PA |
1139 | /* If there's already a target at this stratum, remove it. */ |
1140 | ||
66b4deae | 1141 | if (m_stack[stratum] != NULL) |
494409bb | 1142 | unpush (m_stack[stratum]); |
c906108c | 1143 | |
a1740ee1 | 1144 | /* Now add the new one. */ |
66b4deae | 1145 | m_stack[stratum] = t; |
5d502164 | 1146 | |
66b4deae PA |
1147 | if (m_top < stratum) |
1148 | m_top = stratum; | |
a1740ee1 PA |
1149 | } |
1150 | ||
1151 | /* See target.h. */ | |
c906108c | 1152 | |
a1740ee1 PA |
1153 | bool |
1154 | target_stack::unpush (target_ops *t) | |
c906108c | 1155 | { |
1688cb29 TT |
1156 | gdb_assert (t != NULL); |
1157 | ||
66b4deae PA |
1158 | strata stratum = t->stratum (); |
1159 | ||
1160 | if (stratum == dummy_stratum) | |
c8d104ad | 1161 | internal_error (__FILE__, __LINE__, |
9b20d036 | 1162 | _("Attempt to unpush the dummy target")); |
c8d104ad | 1163 | |
a1740ee1 PA |
1164 | /* Look for the specified target. Note that a target can only occur |
1165 | once in the target stack. */ | |
c906108c | 1166 | |
66b4deae | 1167 | if (m_stack[stratum] != t) |
258b763a | 1168 | { |
a1740ee1 PA |
1169 | /* If T wasn't pushed, quit. Only open targets should be |
1170 | closed. */ | |
1171 | return false; | |
258b763a | 1172 | } |
c906108c | 1173 | |
c378eb4e | 1174 | /* Unchain the target. */ |
66b4deae | 1175 | m_stack[stratum] = NULL; |
a1740ee1 | 1176 | |
66b4deae PA |
1177 | if (m_top == stratum) |
1178 | m_top = t->beneath ()->stratum (); | |
c906108c | 1179 | |
5b6d1e4f PA |
1180 | /* Finally close the target, if there are no inferiors |
1181 | referencing this target still. Note we do this after unchaining, | |
1182 | so any target method calls from within the target_close | |
1183 | implementation don't end up in T anymore. Do leave the target | |
1184 | open if we have are other inferiors referencing this target | |
1185 | still. */ | |
1186 | decref_target (t); | |
305436e0 | 1187 | |
a1740ee1 | 1188 | return true; |
c906108c SS |
1189 | } |
1190 | ||
915ef8b1 PA |
1191 | /* Unpush TARGET and assert that it worked. */ |
1192 | ||
1193 | static void | |
1194 | unpush_target_and_assert (struct target_ops *target) | |
1195 | { | |
fadf6add | 1196 | if (!current_inferior ()->unpush_target (target)) |
915ef8b1 PA |
1197 | { |
1198 | fprintf_unfiltered (gdb_stderr, | |
1199 | "pop_all_targets couldn't find target %s\n", | |
f6ac5f3d | 1200 | target->shortname ()); |
915ef8b1 PA |
1201 | internal_error (__FILE__, __LINE__, |
1202 | _("failed internal consistency check")); | |
1203 | } | |
1204 | } | |
1205 | ||
aa76d38d | 1206 | void |
460014f5 | 1207 | pop_all_targets_above (enum strata above_stratum) |
aa76d38d | 1208 | { |
66b4deae | 1209 | while ((int) (current_top_target ()->stratum ()) > (int) above_stratum) |
8b88a78e | 1210 | unpush_target_and_assert (current_top_target ()); |
915ef8b1 PA |
1211 | } |
1212 | ||
1213 | /* See target.h. */ | |
1214 | ||
1215 | void | |
1216 | pop_all_targets_at_and_above (enum strata stratum) | |
1217 | { | |
66b4deae | 1218 | while ((int) (current_top_target ()->stratum ()) >= (int) stratum) |
8b88a78e | 1219 | unpush_target_and_assert (current_top_target ()); |
aa76d38d PA |
1220 | } |
1221 | ||
87ab71f0 | 1222 | void |
460014f5 | 1223 | pop_all_targets (void) |
87ab71f0 | 1224 | { |
460014f5 | 1225 | pop_all_targets_above (dummy_stratum); |
87ab71f0 PA |
1226 | } |
1227 | ||
fadf6add SM |
1228 | void |
1229 | target_unpusher::operator() (struct target_ops *ops) const | |
1230 | { | |
1231 | current_inferior ()->unpush_target (ops); | |
1232 | } | |
1233 | ||
f0f9ff95 TT |
1234 | /* Default implementation of to_get_thread_local_address. */ |
1235 | ||
1236 | static void | |
1237 | generic_tls_error (void) | |
1238 | { | |
1239 | throw_error (TLS_GENERIC_ERROR, | |
1240 | _("Cannot find thread-local variables on this target")); | |
1241 | } | |
1242 | ||
72f5cf0e | 1243 | /* Using the objfile specified in OBJFILE, find the address for the |
9e35dae4 DJ |
1244 | current thread's thread-local storage with offset OFFSET. */ |
1245 | CORE_ADDR | |
1246 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) | |
1247 | { | |
1248 | volatile CORE_ADDR addr = 0; | |
8b88a78e | 1249 | struct target_ops *target = current_top_target (); |
6e056c81 | 1250 | struct gdbarch *gdbarch = target_gdbarch (); |
9e35dae4 | 1251 | |
6e056c81 | 1252 | if (gdbarch_fetch_tls_load_module_address_p (gdbarch)) |
9e35dae4 DJ |
1253 | { |
1254 | ptid_t ptid = inferior_ptid; | |
9e35dae4 | 1255 | |
a70b8144 | 1256 | try |
9e35dae4 DJ |
1257 | { |
1258 | CORE_ADDR lm_addr; | |
1259 | ||
1260 | /* Fetch the load module address for this objfile. */ | |
6e056c81 | 1261 | lm_addr = gdbarch_fetch_tls_load_module_address (gdbarch, |
dda83cd7 | 1262 | objfile); |
9e35dae4 | 1263 | |
6e056c81 JB |
1264 | if (gdbarch_get_thread_local_address_p (gdbarch)) |
1265 | addr = gdbarch_get_thread_local_address (gdbarch, ptid, lm_addr, | |
1266 | offset); | |
1267 | else | |
1268 | addr = target->get_thread_local_address (ptid, lm_addr, offset); | |
9e35dae4 DJ |
1269 | } |
1270 | /* If an error occurred, print TLS related messages here. Otherwise, | |
dda83cd7 | 1271 | throw the error to some higher catcher. */ |
230d2906 | 1272 | catch (const gdb_exception &ex) |
9e35dae4 DJ |
1273 | { |
1274 | int objfile_is_library = (objfile->flags & OBJF_SHARED); | |
1275 | ||
1276 | switch (ex.error) | |
1277 | { | |
1278 | case TLS_NO_LIBRARY_SUPPORT_ERROR: | |
3e43a32a MS |
1279 | error (_("Cannot find thread-local variables " |
1280 | "in this thread library.")); | |
9e35dae4 DJ |
1281 | break; |
1282 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: | |
1283 | if (objfile_is_library) | |
1284 | error (_("Cannot find shared library `%s' in dynamic" | |
dda83cd7 | 1285 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
1286 | else |
1287 | error (_("Cannot find executable file `%s' in dynamic" | |
dda83cd7 | 1288 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
1289 | break; |
1290 | case TLS_NOT_ALLOCATED_YET_ERROR: | |
1291 | if (objfile_is_library) | |
1292 | error (_("The inferior has not yet allocated storage for" | |
dda83cd7 SM |
1293 | " thread-local variables in\n" |
1294 | "the shared library `%s'\n" | |
1295 | "for %s"), | |
a068643d TT |
1296 | objfile_name (objfile), |
1297 | target_pid_to_str (ptid).c_str ()); | |
9e35dae4 DJ |
1298 | else |
1299 | error (_("The inferior has not yet allocated storage for" | |
dda83cd7 SM |
1300 | " thread-local variables in\n" |
1301 | "the executable `%s'\n" | |
1302 | "for %s"), | |
a068643d TT |
1303 | objfile_name (objfile), |
1304 | target_pid_to_str (ptid).c_str ()); | |
9e35dae4 DJ |
1305 | break; |
1306 | case TLS_GENERIC_ERROR: | |
1307 | if (objfile_is_library) | |
1308 | error (_("Cannot find thread-local storage for %s, " | |
dda83cd7 | 1309 | "shared library %s:\n%s"), |
a068643d | 1310 | target_pid_to_str (ptid).c_str (), |
3d6e9d23 | 1311 | objfile_name (objfile), ex.what ()); |
9e35dae4 DJ |
1312 | else |
1313 | error (_("Cannot find thread-local storage for %s, " | |
dda83cd7 | 1314 | "executable file %s:\n%s"), |
a068643d | 1315 | target_pid_to_str (ptid).c_str (), |
3d6e9d23 | 1316 | objfile_name (objfile), ex.what ()); |
9e35dae4 DJ |
1317 | break; |
1318 | default: | |
eedc3f4f | 1319 | throw; |
9e35dae4 DJ |
1320 | break; |
1321 | } | |
1322 | } | |
1323 | } | |
9e35dae4 DJ |
1324 | else |
1325 | error (_("Cannot find thread-local variables on this target")); | |
1326 | ||
1327 | return addr; | |
1328 | } | |
1329 | ||
6be7b56e | 1330 | const char * |
01cb8804 | 1331 | target_xfer_status_to_string (enum target_xfer_status status) |
6be7b56e PA |
1332 | { |
1333 | #define CASE(X) case X: return #X | |
01cb8804 | 1334 | switch (status) |
6be7b56e PA |
1335 | { |
1336 | CASE(TARGET_XFER_E_IO); | |
bc113b4e | 1337 | CASE(TARGET_XFER_UNAVAILABLE); |
6be7b56e PA |
1338 | default: |
1339 | return "<unknown>"; | |
1340 | } | |
1341 | #undef CASE | |
1342 | }; | |
1343 | ||
1344 | ||
66920317 | 1345 | /* See target.h. */ |
c906108c | 1346 | |
66920317 TT |
1347 | gdb::unique_xmalloc_ptr<char> |
1348 | target_read_string (CORE_ADDR memaddr, int len, int *bytes_read) | |
c906108c | 1349 | { |
670e35fa | 1350 | gdb::unique_xmalloc_ptr<gdb_byte> buffer; |
5d502164 | 1351 | |
66920317 TT |
1352 | int ignore; |
1353 | if (bytes_read == nullptr) | |
1354 | bytes_read = &ignore; | |
1355 | ||
670e35fa TT |
1356 | /* Note that the endian-ness does not matter here. */ |
1357 | int errcode = read_string (memaddr, -1, 1, len, BFD_ENDIAN_LITTLE, | |
66920317 TT |
1358 | &buffer, bytes_read); |
1359 | if (errcode != 0) | |
1360 | return {}; | |
670e35fa | 1361 | |
66920317 | 1362 | return gdb::unique_xmalloc_ptr<char> ((char *) buffer.release ()); |
c906108c SS |
1363 | } |
1364 | ||
19cf757a | 1365 | const target_section_table * |
07b82ea5 PA |
1366 | target_get_section_table (struct target_ops *target) |
1367 | { | |
f6ac5f3d | 1368 | return target->get_section_table (); |
07b82ea5 PA |
1369 | } |
1370 | ||
8db32d44 | 1371 | /* Find a section containing ADDR. */ |
07b82ea5 | 1372 | |
19cf757a | 1373 | const struct target_section * |
8db32d44 AC |
1374 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
1375 | { | |
19cf757a | 1376 | const target_section_table *table = target_get_section_table (target); |
07b82ea5 PA |
1377 | |
1378 | if (table == NULL) | |
1379 | return NULL; | |
1380 | ||
19cf757a | 1381 | for (const target_section &secp : *table) |
8db32d44 | 1382 | { |
bb2a6777 TT |
1383 | if (addr >= secp.addr && addr < secp.endaddr) |
1384 | return &secp; | |
8db32d44 AC |
1385 | } |
1386 | return NULL; | |
1387 | } | |
1388 | ||
336aa7b7 AB |
1389 | /* See target.h. */ |
1390 | ||
1391 | const target_section_table * | |
1392 | default_get_section_table () | |
1393 | { | |
1394 | return ¤t_program_space->target_sections (); | |
1395 | } | |
0fec99e8 PA |
1396 | |
1397 | /* Helper for the memory xfer routines. Checks the attributes of the | |
1398 | memory region of MEMADDR against the read or write being attempted. | |
1399 | If the access is permitted returns true, otherwise returns false. | |
1400 | REGION_P is an optional output parameter. If not-NULL, it is | |
1401 | filled with a pointer to the memory region of MEMADDR. REG_LEN | |
1402 | returns LEN trimmed to the end of the region. This is how much the | |
1403 | caller can continue requesting, if the access is permitted. A | |
1404 | single xfer request must not straddle memory region boundaries. */ | |
1405 | ||
1406 | static int | |
1407 | memory_xfer_check_region (gdb_byte *readbuf, const gdb_byte *writebuf, | |
1408 | ULONGEST memaddr, ULONGEST len, ULONGEST *reg_len, | |
1409 | struct mem_region **region_p) | |
1410 | { | |
1411 | struct mem_region *region; | |
1412 | ||
1413 | region = lookup_mem_region (memaddr); | |
1414 | ||
1415 | if (region_p != NULL) | |
1416 | *region_p = region; | |
1417 | ||
1418 | switch (region->attrib.mode) | |
1419 | { | |
1420 | case MEM_RO: | |
1421 | if (writebuf != NULL) | |
1422 | return 0; | |
1423 | break; | |
1424 | ||
1425 | case MEM_WO: | |
1426 | if (readbuf != NULL) | |
1427 | return 0; | |
1428 | break; | |
1429 | ||
1430 | case MEM_FLASH: | |
1431 | /* We only support writing to flash during "load" for now. */ | |
1432 | if (writebuf != NULL) | |
1433 | error (_("Writing to flash memory forbidden in this context")); | |
1434 | break; | |
1435 | ||
1436 | case MEM_NONE: | |
1437 | return 0; | |
1438 | } | |
1439 | ||
1440 | /* region->hi == 0 means there's no upper bound. */ | |
1441 | if (memaddr + len < region->hi || region->hi == 0) | |
1442 | *reg_len = len; | |
1443 | else | |
1444 | *reg_len = region->hi - memaddr; | |
1445 | ||
1446 | return 1; | |
1447 | } | |
1448 | ||
9f713294 YQ |
1449 | /* Read memory from more than one valid target. A core file, for |
1450 | instance, could have some of memory but delegate other bits to | |
1451 | the target below it. So, we must manually try all targets. */ | |
1452 | ||
cc9f16aa | 1453 | enum target_xfer_status |
17fde6d0 | 1454 | raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf, |
9b409511 YQ |
1455 | const gdb_byte *writebuf, ULONGEST memaddr, LONGEST len, |
1456 | ULONGEST *xfered_len) | |
9f713294 | 1457 | { |
9b409511 | 1458 | enum target_xfer_status res; |
9f713294 YQ |
1459 | |
1460 | do | |
1461 | { | |
f6ac5f3d PA |
1462 | res = ops->xfer_partial (TARGET_OBJECT_MEMORY, NULL, |
1463 | readbuf, writebuf, memaddr, len, | |
1464 | xfered_len); | |
9b409511 | 1465 | if (res == TARGET_XFER_OK) |
9f713294 YQ |
1466 | break; |
1467 | ||
633785ff | 1468 | /* Stop if the target reports that the memory is not available. */ |
bc113b4e | 1469 | if (res == TARGET_XFER_UNAVAILABLE) |
633785ff MM |
1470 | break; |
1471 | ||
2735d421 | 1472 | /* Don't continue past targets which have all the memory. |
dda83cd7 | 1473 | At one time, this code was necessary to read data from |
2735d421 KB |
1474 | executables / shared libraries when data for the requested |
1475 | addresses weren't available in the core file. But now the | |
1476 | core target handles this case itself. */ | |
f6ac5f3d | 1477 | if (ops->has_all_memory ()) |
9f713294 YQ |
1478 | break; |
1479 | ||
b6a8c27b | 1480 | ops = ops->beneath (); |
9f713294 YQ |
1481 | } |
1482 | while (ops != NULL); | |
1483 | ||
0f26cec1 PA |
1484 | /* The cache works at the raw memory level. Make sure the cache |
1485 | gets updated with raw contents no matter what kind of memory | |
1486 | object was originally being written. Note we do write-through | |
1487 | first, so that if it fails, we don't write to the cache contents | |
1488 | that never made it to the target. */ | |
1489 | if (writebuf != NULL | |
d7e15655 | 1490 | && inferior_ptid != null_ptid |
0f26cec1 PA |
1491 | && target_dcache_init_p () |
1492 | && (stack_cache_enabled_p () || code_cache_enabled_p ())) | |
1493 | { | |
1494 | DCACHE *dcache = target_dcache_get (); | |
1495 | ||
1496 | /* Note that writing to an area of memory which wasn't present | |
1497 | in the cache doesn't cause it to be loaded in. */ | |
1498 | dcache_update (dcache, res, memaddr, writebuf, *xfered_len); | |
1499 | } | |
1500 | ||
9f713294 YQ |
1501 | return res; |
1502 | } | |
1503 | ||
7f79c47e DE |
1504 | /* Perform a partial memory transfer. |
1505 | For docs see target.h, to_xfer_partial. */ | |
cf7a04e8 | 1506 | |
9b409511 | 1507 | static enum target_xfer_status |
f0ba3972 | 1508 | memory_xfer_partial_1 (struct target_ops *ops, enum target_object object, |
17fde6d0 | 1509 | gdb_byte *readbuf, const gdb_byte *writebuf, ULONGEST memaddr, |
9b409511 | 1510 | ULONGEST len, ULONGEST *xfered_len) |
0779438d | 1511 | { |
9b409511 | 1512 | enum target_xfer_status res; |
0fec99e8 | 1513 | ULONGEST reg_len; |
cf7a04e8 | 1514 | struct mem_region *region; |
4e5d721f | 1515 | struct inferior *inf; |
cf7a04e8 | 1516 | |
07b82ea5 PA |
1517 | /* For accesses to unmapped overlay sections, read directly from |
1518 | files. Must do this first, as MEMADDR may need adjustment. */ | |
1519 | if (readbuf != NULL && overlay_debugging) | |
1520 | { | |
1521 | struct obj_section *section = find_pc_overlay (memaddr); | |
5d502164 | 1522 | |
07b82ea5 PA |
1523 | if (pc_in_unmapped_range (memaddr, section)) |
1524 | { | |
19cf757a | 1525 | const target_section_table *table = target_get_section_table (ops); |
07b82ea5 | 1526 | const char *section_name = section->the_bfd_section->name; |
5d502164 | 1527 | |
07b82ea5 | 1528 | memaddr = overlay_mapped_address (memaddr, section); |
e56cb451 KB |
1529 | |
1530 | auto match_cb = [=] (const struct target_section *s) | |
1531 | { | |
1532 | return (strcmp (section_name, s->the_bfd_section->name) == 0); | |
1533 | }; | |
1534 | ||
07b82ea5 | 1535 | return section_table_xfer_memory_partial (readbuf, writebuf, |
9b409511 | 1536 | memaddr, len, xfered_len, |
bb2a6777 | 1537 | *table, match_cb); |
07b82ea5 PA |
1538 | } |
1539 | } | |
1540 | ||
1541 | /* Try the executable files, if "trust-readonly-sections" is set. */ | |
cf7a04e8 DJ |
1542 | if (readbuf != NULL && trust_readonly) |
1543 | { | |
19cf757a AB |
1544 | const struct target_section *secp |
1545 | = target_section_by_addr (ops, memaddr); | |
cf7a04e8 | 1546 | if (secp != NULL |
fd361982 | 1547 | && (bfd_section_flags (secp->the_bfd_section) & SEC_READONLY)) |
07b82ea5 | 1548 | { |
19cf757a | 1549 | const target_section_table *table = target_get_section_table (ops); |
07b82ea5 | 1550 | return section_table_xfer_memory_partial (readbuf, writebuf, |
9b409511 | 1551 | memaddr, len, xfered_len, |
bb2a6777 | 1552 | *table); |
07b82ea5 | 1553 | } |
98646950 UW |
1554 | } |
1555 | ||
cf7a04e8 | 1556 | /* Try GDB's internal data cache. */ |
cf7a04e8 | 1557 | |
0fec99e8 PA |
1558 | if (!memory_xfer_check_region (readbuf, writebuf, memaddr, len, ®_len, |
1559 | ®ion)) | |
1560 | return TARGET_XFER_E_IO; | |
cf7a04e8 | 1561 | |
d7e15655 | 1562 | if (inferior_ptid != null_ptid) |
00431a78 | 1563 | inf = current_inferior (); |
6c95b8df PA |
1564 | else |
1565 | inf = NULL; | |
4e5d721f DE |
1566 | |
1567 | if (inf != NULL | |
0f26cec1 | 1568 | && readbuf != NULL |
2f4d8875 PA |
1569 | /* The dcache reads whole cache lines; that doesn't play well |
1570 | with reading from a trace buffer, because reading outside of | |
1571 | the collected memory range fails. */ | |
1572 | && get_traceframe_number () == -1 | |
4e5d721f | 1573 | && (region->attrib.cache |
29453a14 YQ |
1574 | || (stack_cache_enabled_p () && object == TARGET_OBJECT_STACK_MEMORY) |
1575 | || (code_cache_enabled_p () && object == TARGET_OBJECT_CODE_MEMORY))) | |
cf7a04e8 | 1576 | { |
2a2f9fe4 YQ |
1577 | DCACHE *dcache = target_dcache_get_or_init (); |
1578 | ||
0f26cec1 PA |
1579 | return dcache_read_memory_partial (ops, dcache, memaddr, readbuf, |
1580 | reg_len, xfered_len); | |
cf7a04e8 DJ |
1581 | } |
1582 | ||
1583 | /* If none of those methods found the memory we wanted, fall back | |
1584 | to a target partial transfer. Normally a single call to | |
1585 | to_xfer_partial is enough; if it doesn't recognize an object | |
1586 | it will call the to_xfer_partial of the next target down. | |
1587 | But for memory this won't do. Memory is the only target | |
9b409511 YQ |
1588 | object which can be read from more than one valid target. |
1589 | A core file, for instance, could have some of memory but | |
1590 | delegate other bits to the target below it. So, we must | |
1591 | manually try all targets. */ | |
1592 | ||
1593 | res = raw_memory_xfer_partial (ops, readbuf, writebuf, memaddr, reg_len, | |
1594 | xfered_len); | |
cf7a04e8 DJ |
1595 | |
1596 | /* If we still haven't got anything, return the last error. We | |
1597 | give up. */ | |
1598 | return res; | |
0779438d AC |
1599 | } |
1600 | ||
f0ba3972 PA |
1601 | /* Perform a partial memory transfer. For docs see target.h, |
1602 | to_xfer_partial. */ | |
1603 | ||
9b409511 | 1604 | static enum target_xfer_status |
f0ba3972 | 1605 | memory_xfer_partial (struct target_ops *ops, enum target_object object, |
9b409511 YQ |
1606 | gdb_byte *readbuf, const gdb_byte *writebuf, |
1607 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) | |
f0ba3972 | 1608 | { |
9b409511 | 1609 | enum target_xfer_status res; |
f0ba3972 PA |
1610 | |
1611 | /* Zero length requests are ok and require no work. */ | |
1612 | if (len == 0) | |
9b409511 | 1613 | return TARGET_XFER_EOF; |
f0ba3972 | 1614 | |
a738ea1d YQ |
1615 | memaddr = address_significant (target_gdbarch (), memaddr); |
1616 | ||
f0ba3972 PA |
1617 | /* Fill in READBUF with breakpoint shadows, or WRITEBUF with |
1618 | breakpoint insns, thus hiding out from higher layers whether | |
1619 | there are software breakpoints inserted in the code stream. */ | |
1620 | if (readbuf != NULL) | |
1621 | { | |
9b409511 YQ |
1622 | res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len, |
1623 | xfered_len); | |
f0ba3972 | 1624 | |
9b409511 | 1625 | if (res == TARGET_XFER_OK && !show_memory_breakpoints) |
c63528fc | 1626 | breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, *xfered_len); |
f0ba3972 PA |
1627 | } |
1628 | else | |
1629 | { | |
67c059c2 AB |
1630 | /* A large write request is likely to be partially satisfied |
1631 | by memory_xfer_partial_1. We will continually malloc | |
1632 | and free a copy of the entire write request for breakpoint | |
1633 | shadow handling even though we only end up writing a small | |
09c98b44 DB |
1634 | subset of it. Cap writes to a limit specified by the target |
1635 | to mitigate this. */ | |
f6ac5f3d | 1636 | len = std::min (ops->get_memory_xfer_limit (), len); |
67c059c2 | 1637 | |
26fcd5d7 TT |
1638 | gdb::byte_vector buf (writebuf, writebuf + len); |
1639 | breakpoint_xfer_memory (NULL, buf.data (), writebuf, memaddr, len); | |
1640 | res = memory_xfer_partial_1 (ops, object, NULL, buf.data (), memaddr, len, | |
9b409511 | 1641 | xfered_len); |
f0ba3972 PA |
1642 | } |
1643 | ||
1644 | return res; | |
1645 | } | |
1646 | ||
cb85b21b TT |
1647 | scoped_restore_tmpl<int> |
1648 | make_scoped_restore_show_memory_breakpoints (int show) | |
8defab1a | 1649 | { |
cb85b21b | 1650 | return make_scoped_restore (&show_memory_breakpoints, show); |
8defab1a DJ |
1651 | } |
1652 | ||
7f79c47e DE |
1653 | /* For docs see target.h, to_xfer_partial. */ |
1654 | ||
9b409511 | 1655 | enum target_xfer_status |
27394598 AC |
1656 | target_xfer_partial (struct target_ops *ops, |
1657 | enum target_object object, const char *annex, | |
4ac248ca | 1658 | gdb_byte *readbuf, const gdb_byte *writebuf, |
9b409511 YQ |
1659 | ULONGEST offset, ULONGEST len, |
1660 | ULONGEST *xfered_len) | |
27394598 | 1661 | { |
9b409511 | 1662 | enum target_xfer_status retval; |
27394598 | 1663 | |
ce6d0892 YQ |
1664 | /* Transfer is done when LEN is zero. */ |
1665 | if (len == 0) | |
9b409511 | 1666 | return TARGET_XFER_EOF; |
ce6d0892 | 1667 | |
d914c394 SS |
1668 | if (writebuf && !may_write_memory) |
1669 | error (_("Writing to memory is not allowed (addr %s, len %s)"), | |
1670 | core_addr_to_string_nz (offset), plongest (len)); | |
1671 | ||
9b409511 YQ |
1672 | *xfered_len = 0; |
1673 | ||
cf7a04e8 DJ |
1674 | /* If this is a memory transfer, let the memory-specific code |
1675 | have a look at it instead. Memory transfers are more | |
1676 | complicated. */ | |
29453a14 YQ |
1677 | if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY |
1678 | || object == TARGET_OBJECT_CODE_MEMORY) | |
4e5d721f | 1679 | retval = memory_xfer_partial (ops, object, readbuf, |
9b409511 | 1680 | writebuf, offset, len, xfered_len); |
9f713294 | 1681 | else if (object == TARGET_OBJECT_RAW_MEMORY) |
cf7a04e8 | 1682 | { |
0fec99e8 PA |
1683 | /* Skip/avoid accessing the target if the memory region |
1684 | attributes block the access. Check this here instead of in | |
1685 | raw_memory_xfer_partial as otherwise we'd end up checking | |
1686 | this twice in the case of the memory_xfer_partial path is | |
1687 | taken; once before checking the dcache, and another in the | |
1688 | tail call to raw_memory_xfer_partial. */ | |
1689 | if (!memory_xfer_check_region (readbuf, writebuf, offset, len, &len, | |
1690 | NULL)) | |
1691 | return TARGET_XFER_E_IO; | |
1692 | ||
9f713294 | 1693 | /* Request the normal memory object from other layers. */ |
9b409511 YQ |
1694 | retval = raw_memory_xfer_partial (ops, readbuf, writebuf, offset, len, |
1695 | xfered_len); | |
cf7a04e8 | 1696 | } |
9f713294 | 1697 | else |
f6ac5f3d PA |
1698 | retval = ops->xfer_partial (object, annex, readbuf, |
1699 | writebuf, offset, len, xfered_len); | |
cf7a04e8 | 1700 | |
27394598 AC |
1701 | if (targetdebug) |
1702 | { | |
1703 | const unsigned char *myaddr = NULL; | |
1704 | ||
1705 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a | 1706 | "%s:target_xfer_partial " |
9b409511 | 1707 | "(%d, %s, %s, %s, %s, %s) = %d, %s", |
f6ac5f3d | 1708 | ops->shortname (), |
27394598 AC |
1709 | (int) object, |
1710 | (annex ? annex : "(null)"), | |
53b71562 JB |
1711 | host_address_to_string (readbuf), |
1712 | host_address_to_string (writebuf), | |
0b1553bc | 1713 | core_addr_to_string_nz (offset), |
9b409511 YQ |
1714 | pulongest (len), retval, |
1715 | pulongest (*xfered_len)); | |
27394598 AC |
1716 | |
1717 | if (readbuf) | |
1718 | myaddr = readbuf; | |
1719 | if (writebuf) | |
1720 | myaddr = writebuf; | |
9b409511 | 1721 | if (retval == TARGET_XFER_OK && myaddr != NULL) |
27394598 AC |
1722 | { |
1723 | int i; | |
2bc416ba | 1724 | |
27394598 | 1725 | fputs_unfiltered (", bytes =", gdb_stdlog); |
9b409511 | 1726 | for (i = 0; i < *xfered_len; i++) |
27394598 | 1727 | { |
53b71562 | 1728 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1729 | { |
1730 | if (targetdebug < 2 && i > 0) | |
1731 | { | |
1732 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
1733 | break; | |
1734 | } | |
1735 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1736 | } | |
2bc416ba | 1737 | |
27394598 AC |
1738 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
1739 | } | |
1740 | } | |
2bc416ba | 1741 | |
27394598 AC |
1742 | fputc_unfiltered ('\n', gdb_stdlog); |
1743 | } | |
9b409511 YQ |
1744 | |
1745 | /* Check implementations of to_xfer_partial update *XFERED_LEN | |
1746 | properly. Do assertion after printing debug messages, so that we | |
1747 | can find more clues on assertion failure from debugging messages. */ | |
bc113b4e | 1748 | if (retval == TARGET_XFER_OK || retval == TARGET_XFER_UNAVAILABLE) |
9b409511 YQ |
1749 | gdb_assert (*xfered_len > 0); |
1750 | ||
27394598 AC |
1751 | return retval; |
1752 | } | |
1753 | ||
578d3588 PA |
1754 | /* Read LEN bytes of target memory at address MEMADDR, placing the |
1755 | results in GDB's memory at MYADDR. Returns either 0 for success or | |
d09f2c3f | 1756 | -1 if any error occurs. |
c906108c SS |
1757 | |
1758 | If an error occurs, no guarantee is made about the contents of the data at | |
1759 | MYADDR. In particular, the caller should not depend upon partial reads | |
1760 | filling the buffer with good data. There is no way for the caller to know | |
1761 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 | 1762 | deal with partial reads should call target_read (which will retry until |
c378eb4e | 1763 | it makes no progress, and then return how much was transferred). */ |
c906108c SS |
1764 | |
1765 | int | |
1b162304 | 1766 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
c906108c | 1767 | { |
8b88a78e | 1768 | if (target_read (current_top_target (), TARGET_OBJECT_MEMORY, NULL, |
cf7a04e8 DJ |
1769 | myaddr, memaddr, len) == len) |
1770 | return 0; | |
0779438d | 1771 | else |
d09f2c3f | 1772 | return -1; |
c906108c SS |
1773 | } |
1774 | ||
721ec300 GB |
1775 | /* See target/target.h. */ |
1776 | ||
1777 | int | |
1778 | target_read_uint32 (CORE_ADDR memaddr, uint32_t *result) | |
1779 | { | |
1780 | gdb_byte buf[4]; | |
1781 | int r; | |
1782 | ||
1783 | r = target_read_memory (memaddr, buf, sizeof buf); | |
1784 | if (r != 0) | |
1785 | return r; | |
1786 | *result = extract_unsigned_integer (buf, sizeof buf, | |
1787 | gdbarch_byte_order (target_gdbarch ())); | |
1788 | return 0; | |
1789 | } | |
1790 | ||
aee4bf85 PA |
1791 | /* Like target_read_memory, but specify explicitly that this is a read |
1792 | from the target's raw memory. That is, this read bypasses the | |
1793 | dcache, breakpoint shadowing, etc. */ | |
1794 | ||
1795 | int | |
1796 | target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1797 | { | |
8b88a78e | 1798 | if (target_read (current_top_target (), TARGET_OBJECT_RAW_MEMORY, NULL, |
aee4bf85 PA |
1799 | myaddr, memaddr, len) == len) |
1800 | return 0; | |
1801 | else | |
d09f2c3f | 1802 | return -1; |
aee4bf85 PA |
1803 | } |
1804 | ||
4e5d721f DE |
1805 | /* Like target_read_memory, but specify explicitly that this is a read from |
1806 | the target's stack. This may trigger different cache behavior. */ | |
1807 | ||
1808 | int | |
45aa4659 | 1809 | target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
4e5d721f | 1810 | { |
8b88a78e | 1811 | if (target_read (current_top_target (), 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 | { | |
8b88a78e | 1824 | if (target_read (current_top_target (), TARGET_OBJECT_CODE_MEMORY, NULL, |
29453a14 YQ |
1825 | myaddr, memaddr, len) == len) |
1826 | return 0; | |
1827 | else | |
d09f2c3f | 1828 | return -1; |
29453a14 YQ |
1829 | } |
1830 | ||
7f79c47e | 1831 | /* Write LEN bytes from MYADDR to target memory at address MEMADDR. |
d09f2c3f PA |
1832 | Returns either 0 for success or -1 if any error occurs. If an |
1833 | error occurs, no guarantee is made about how much data got written. | |
1834 | Callers that can deal with partial writes should call | |
1835 | target_write. */ | |
7f79c47e | 1836 | |
c906108c | 1837 | int |
45aa4659 | 1838 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
c906108c | 1839 | { |
8b88a78e | 1840 | if (target_write (current_top_target (), TARGET_OBJECT_MEMORY, NULL, |
cf7a04e8 DJ |
1841 | myaddr, memaddr, len) == len) |
1842 | return 0; | |
0779438d | 1843 | else |
d09f2c3f | 1844 | return -1; |
c906108c | 1845 | } |
c5aa993b | 1846 | |
f0ba3972 | 1847 | /* Write LEN bytes from MYADDR to target raw memory at address |
d09f2c3f PA |
1848 | MEMADDR. Returns either 0 for success or -1 if any error occurs. |
1849 | If an error occurs, no guarantee is made about how much data got | |
1850 | written. Callers that can deal with partial writes should call | |
1851 | target_write. */ | |
f0ba3972 PA |
1852 | |
1853 | int | |
45aa4659 | 1854 | target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
f0ba3972 | 1855 | { |
8b88a78e | 1856 | if (target_write (current_top_target (), TARGET_OBJECT_RAW_MEMORY, NULL, |
f0ba3972 PA |
1857 | myaddr, memaddr, len) == len) |
1858 | return 0; | |
1859 | else | |
d09f2c3f | 1860 | return -1; |
f0ba3972 PA |
1861 | } |
1862 | ||
fd79ecee DJ |
1863 | /* Fetch the target's memory map. */ |
1864 | ||
a664f67e | 1865 | std::vector<mem_region> |
fd79ecee DJ |
1866 | target_memory_map (void) |
1867 | { | |
8b88a78e | 1868 | std::vector<mem_region> result = current_top_target ()->memory_map (); |
a664f67e SM |
1869 | if (result.empty ()) |
1870 | return result; | |
fd79ecee | 1871 | |
a664f67e | 1872 | std::sort (result.begin (), result.end ()); |
fd79ecee DJ |
1873 | |
1874 | /* Check that regions do not overlap. Simultaneously assign | |
1875 | a numbering for the "mem" commands to use to refer to | |
1876 | each region. */ | |
a664f67e SM |
1877 | mem_region *last_one = NULL; |
1878 | for (size_t ix = 0; ix < result.size (); ix++) | |
fd79ecee | 1879 | { |
a664f67e | 1880 | mem_region *this_one = &result[ix]; |
fd79ecee DJ |
1881 | this_one->number = ix; |
1882 | ||
a664f67e | 1883 | if (last_one != NULL && last_one->hi > this_one->lo) |
fd79ecee DJ |
1884 | { |
1885 | warning (_("Overlapping regions in memory map: ignoring")); | |
a664f67e | 1886 | return std::vector<mem_region> (); |
fd79ecee | 1887 | } |
a664f67e | 1888 | |
fd79ecee DJ |
1889 | last_one = this_one; |
1890 | } | |
1891 | ||
1892 | return result; | |
1893 | } | |
1894 | ||
a76d924d DJ |
1895 | void |
1896 | target_flash_erase (ULONGEST address, LONGEST length) | |
1897 | { | |
8b88a78e | 1898 | current_top_target ()->flash_erase (address, length); |
a76d924d DJ |
1899 | } |
1900 | ||
1901 | void | |
1902 | target_flash_done (void) | |
1903 | { | |
8b88a78e | 1904 | current_top_target ()->flash_done (); |
a76d924d DJ |
1905 | } |
1906 | ||
920d2a44 AC |
1907 | static void |
1908 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1909 | struct cmd_list_element *c, const char *value) | |
1910 | { | |
3e43a32a MS |
1911 | fprintf_filtered (file, |
1912 | _("Mode for reading from readonly sections is %s.\n"), | |
920d2a44 AC |
1913 | value); |
1914 | } | |
3a11626d | 1915 | |
7f79c47e | 1916 | /* Target vector read/write partial wrapper functions. */ |
0088c768 | 1917 | |
9b409511 | 1918 | static enum target_xfer_status |
1e3ff5ad AC |
1919 | target_read_partial (struct target_ops *ops, |
1920 | enum target_object object, | |
1b0ba102 | 1921 | const char *annex, gdb_byte *buf, |
9b409511 YQ |
1922 | ULONGEST offset, ULONGEST len, |
1923 | ULONGEST *xfered_len) | |
1e3ff5ad | 1924 | { |
9b409511 YQ |
1925 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len, |
1926 | xfered_len); | |
1e3ff5ad AC |
1927 | } |
1928 | ||
8a55ffb0 | 1929 | static enum target_xfer_status |
1e3ff5ad AC |
1930 | target_write_partial (struct target_ops *ops, |
1931 | enum target_object object, | |
1b0ba102 | 1932 | const char *annex, const gdb_byte *buf, |
9b409511 | 1933 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len) |
1e3ff5ad | 1934 | { |
9b409511 YQ |
1935 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len, |
1936 | xfered_len); | |
1e3ff5ad AC |
1937 | } |
1938 | ||
1939 | /* Wrappers to perform the full transfer. */ | |
7f79c47e DE |
1940 | |
1941 | /* For docs on target_read see target.h. */ | |
1942 | ||
1e3ff5ad AC |
1943 | LONGEST |
1944 | target_read (struct target_ops *ops, | |
1945 | enum target_object object, | |
1b0ba102 | 1946 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1947 | ULONGEST offset, LONGEST len) |
1948 | { | |
279a6fed | 1949 | LONGEST xfered_total = 0; |
d309493c SM |
1950 | int unit_size = 1; |
1951 | ||
1952 | /* If we are reading from a memory object, find the length of an addressable | |
1953 | unit for that architecture. */ | |
1954 | if (object == TARGET_OBJECT_MEMORY | |
1955 | || object == TARGET_OBJECT_STACK_MEMORY | |
1956 | || object == TARGET_OBJECT_CODE_MEMORY | |
1957 | || object == TARGET_OBJECT_RAW_MEMORY) | |
1958 | unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); | |
5d502164 | 1959 | |
279a6fed | 1960 | while (xfered_total < len) |
1e3ff5ad | 1961 | { |
279a6fed | 1962 | ULONGEST xfered_partial; |
9b409511 YQ |
1963 | enum target_xfer_status status; |
1964 | ||
1965 | status = target_read_partial (ops, object, annex, | |
d309493c | 1966 | buf + xfered_total * unit_size, |
279a6fed SM |
1967 | offset + xfered_total, len - xfered_total, |
1968 | &xfered_partial); | |
5d502164 | 1969 | |
1e3ff5ad | 1970 | /* Call an observer, notifying them of the xfer progress? */ |
9b409511 | 1971 | if (status == TARGET_XFER_EOF) |
279a6fed | 1972 | return xfered_total; |
9b409511 YQ |
1973 | else if (status == TARGET_XFER_OK) |
1974 | { | |
279a6fed | 1975 | xfered_total += xfered_partial; |
9b409511 YQ |
1976 | QUIT; |
1977 | } | |
1978 | else | |
279a6fed | 1979 | return TARGET_XFER_E_IO; |
9b409511 | 1980 | |
1e3ff5ad AC |
1981 | } |
1982 | return len; | |
1983 | } | |
1984 | ||
f1a507a1 JB |
1985 | /* Assuming that the entire [begin, end) range of memory cannot be |
1986 | read, try to read whatever subrange is possible to read. | |
1987 | ||
1988 | The function returns, in RESULT, either zero or one memory block. | |
1989 | If there's a readable subrange at the beginning, it is completely | |
1990 | read and returned. Any further readable subrange will not be read. | |
1991 | Otherwise, if there's a readable subrange at the end, it will be | |
1992 | completely read and returned. Any readable subranges before it | |
1993 | (obviously, not starting at the beginning), will be ignored. In | |
1994 | other cases -- either no readable subrange, or readable subrange(s) | |
1995 | that is neither at the beginning, or end, nothing is returned. | |
1996 | ||
1997 | The purpose of this function is to handle a read across a boundary | |
1998 | of accessible memory in a case when memory map is not available. | |
1999 | The above restrictions are fine for this case, but will give | |
2000 | incorrect results if the memory is 'patchy'. However, supporting | |
2001 | 'patchy' memory would require trying to read every single byte, | |
2002 | and it seems unacceptable solution. Explicit memory map is | |
2003 | recommended for this case -- and target_read_memory_robust will | |
2004 | take care of reading multiple ranges then. */ | |
8dedea02 VP |
2005 | |
2006 | static void | |
3e43a32a | 2007 | read_whatever_is_readable (struct target_ops *ops, |
279a6fed | 2008 | const ULONGEST begin, const ULONGEST end, |
d309493c | 2009 | int unit_size, |
386c8614 | 2010 | std::vector<memory_read_result> *result) |
d5086790 | 2011 | { |
8dedea02 VP |
2012 | ULONGEST current_begin = begin; |
2013 | ULONGEST current_end = end; | |
2014 | int forward; | |
9b409511 | 2015 | ULONGEST xfered_len; |
8dedea02 VP |
2016 | |
2017 | /* If we previously failed to read 1 byte, nothing can be done here. */ | |
2018 | if (end - begin <= 1) | |
386c8614 TT |
2019 | return; |
2020 | ||
2021 | gdb::unique_xmalloc_ptr<gdb_byte> buf ((gdb_byte *) xmalloc (end - begin)); | |
8dedea02 VP |
2022 | |
2023 | /* Check that either first or the last byte is readable, and give up | |
c378eb4e | 2024 | if not. This heuristic is meant to permit reading accessible memory |
8dedea02 VP |
2025 | at the boundary of accessible region. */ |
2026 | if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
386c8614 | 2027 | buf.get (), begin, 1, &xfered_len) == TARGET_XFER_OK) |
8dedea02 VP |
2028 | { |
2029 | forward = 1; | |
2030 | ++current_begin; | |
2031 | } | |
2032 | else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
386c8614 | 2033 | buf.get () + (end - begin) - 1, end - 1, 1, |
9b409511 | 2034 | &xfered_len) == TARGET_XFER_OK) |
8dedea02 VP |
2035 | { |
2036 | forward = 0; | |
2037 | --current_end; | |
2038 | } | |
2039 | else | |
386c8614 | 2040 | return; |
8dedea02 VP |
2041 | |
2042 | /* Loop invariant is that the [current_begin, current_end) was previously | |
2043 | found to be not readable as a whole. | |
2044 | ||
2045 | Note loop condition -- if the range has 1 byte, we can't divide the range | |
2046 | so there's no point trying further. */ | |
2047 | while (current_end - current_begin > 1) | |
2048 | { | |
2049 | ULONGEST first_half_begin, first_half_end; | |
2050 | ULONGEST second_half_begin, second_half_end; | |
2051 | LONGEST xfer; | |
279a6fed | 2052 | ULONGEST middle = current_begin + (current_end - current_begin) / 2; |
f1a507a1 | 2053 | |
8dedea02 VP |
2054 | if (forward) |
2055 | { | |
2056 | first_half_begin = current_begin; | |
2057 | first_half_end = middle; | |
2058 | second_half_begin = middle; | |
2059 | second_half_end = current_end; | |
2060 | } | |
2061 | else | |
2062 | { | |
2063 | first_half_begin = middle; | |
2064 | first_half_end = current_end; | |
2065 | second_half_begin = current_begin; | |
2066 | second_half_end = middle; | |
2067 | } | |
2068 | ||
2069 | xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
386c8614 | 2070 | buf.get () + (first_half_begin - begin) * unit_size, |
8dedea02 VP |
2071 | first_half_begin, |
2072 | first_half_end - first_half_begin); | |
2073 | ||
2074 | if (xfer == first_half_end - first_half_begin) | |
2075 | { | |
c378eb4e | 2076 | /* This half reads up fine. So, the error must be in the |
3e43a32a | 2077 | other half. */ |
8dedea02 VP |
2078 | current_begin = second_half_begin; |
2079 | current_end = second_half_end; | |
2080 | } | |
2081 | else | |
2082 | { | |
c378eb4e | 2083 | /* This half is not readable. Because we've tried one byte, we |
279a6fed | 2084 | know some part of this half if actually readable. Go to the next |
8dedea02 VP |
2085 | iteration to divide again and try to read. |
2086 | ||
2087 | We don't handle the other half, because this function only tries | |
2088 | to read a single readable subrange. */ | |
2089 | current_begin = first_half_begin; | |
2090 | current_end = first_half_end; | |
2091 | } | |
2092 | } | |
2093 | ||
2094 | if (forward) | |
2095 | { | |
2096 | /* The [begin, current_begin) range has been read. */ | |
386c8614 | 2097 | result->emplace_back (begin, current_end, std::move (buf)); |
8dedea02 VP |
2098 | } |
2099 | else | |
2100 | { | |
2101 | /* The [current_end, end) range has been read. */ | |
279a6fed | 2102 | LONGEST region_len = end - current_end; |
f1a507a1 | 2103 | |
386c8614 TT |
2104 | gdb::unique_xmalloc_ptr<gdb_byte> data |
2105 | ((gdb_byte *) xmalloc (region_len * unit_size)); | |
2106 | memcpy (data.get (), buf.get () + (current_end - begin) * unit_size, | |
d309493c | 2107 | region_len * unit_size); |
386c8614 | 2108 | result->emplace_back (current_end, end, std::move (data)); |
8dedea02 | 2109 | } |
8dedea02 VP |
2110 | } |
2111 | ||
386c8614 | 2112 | std::vector<memory_read_result> |
279a6fed SM |
2113 | read_memory_robust (struct target_ops *ops, |
2114 | const ULONGEST offset, const LONGEST len) | |
8dedea02 | 2115 | { |
386c8614 | 2116 | std::vector<memory_read_result> result; |
d309493c | 2117 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
8dedea02 | 2118 | |
279a6fed SM |
2119 | LONGEST xfered_total = 0; |
2120 | while (xfered_total < len) | |
d5086790 | 2121 | { |
279a6fed SM |
2122 | struct mem_region *region = lookup_mem_region (offset + xfered_total); |
2123 | LONGEST region_len; | |
5d502164 | 2124 | |
8dedea02 VP |
2125 | /* If there is no explicit region, a fake one should be created. */ |
2126 | gdb_assert (region); | |
2127 | ||
2128 | if (region->hi == 0) | |
279a6fed | 2129 | region_len = len - xfered_total; |
8dedea02 | 2130 | else |
279a6fed | 2131 | region_len = region->hi - offset; |
8dedea02 VP |
2132 | |
2133 | if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO) | |
d5086790 | 2134 | { |
c378eb4e | 2135 | /* Cannot read this region. Note that we can end up here only |
8dedea02 VP |
2136 | if the region is explicitly marked inaccessible, or |
2137 | 'inaccessible-by-default' is in effect. */ | |
279a6fed | 2138 | xfered_total += region_len; |
8dedea02 VP |
2139 | } |
2140 | else | |
2141 | { | |
325fac50 | 2142 | LONGEST to_read = std::min (len - xfered_total, region_len); |
386c8614 TT |
2143 | gdb::unique_xmalloc_ptr<gdb_byte> buffer |
2144 | ((gdb_byte *) xmalloc (to_read * unit_size)); | |
8dedea02 | 2145 | |
279a6fed | 2146 | LONGEST xfered_partial = |
386c8614 | 2147 | target_read (ops, TARGET_OBJECT_MEMORY, NULL, buffer.get (), |
279a6fed | 2148 | offset + xfered_total, to_read); |
8dedea02 | 2149 | /* Call an observer, notifying them of the xfer progress? */ |
279a6fed | 2150 | if (xfered_partial <= 0) |
d5086790 | 2151 | { |
c378eb4e | 2152 | /* Got an error reading full chunk. See if maybe we can read |
8dedea02 | 2153 | some subrange. */ |
e084c964 DB |
2154 | read_whatever_is_readable (ops, offset + xfered_total, |
2155 | offset + xfered_total + to_read, | |
2156 | unit_size, &result); | |
279a6fed | 2157 | xfered_total += to_read; |
d5086790 | 2158 | } |
8dedea02 VP |
2159 | else |
2160 | { | |
386c8614 TT |
2161 | result.emplace_back (offset + xfered_total, |
2162 | offset + xfered_total + xfered_partial, | |
2163 | std::move (buffer)); | |
279a6fed | 2164 | xfered_total += xfered_partial; |
8dedea02 VP |
2165 | } |
2166 | QUIT; | |
d5086790 | 2167 | } |
d5086790 | 2168 | } |
9d78f827 | 2169 | |
8dedea02 | 2170 | return result; |
d5086790 VP |
2171 | } |
2172 | ||
8dedea02 | 2173 | |
cf7a04e8 DJ |
2174 | /* An alternative to target_write with progress callbacks. */ |
2175 | ||
1e3ff5ad | 2176 | LONGEST |
cf7a04e8 DJ |
2177 | target_write_with_progress (struct target_ops *ops, |
2178 | enum target_object object, | |
2179 | const char *annex, const gdb_byte *buf, | |
2180 | ULONGEST offset, LONGEST len, | |
2181 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad | 2182 | { |
279a6fed | 2183 | LONGEST xfered_total = 0; |
d309493c SM |
2184 | int unit_size = 1; |
2185 | ||
2186 | /* If we are writing to a memory object, find the length of an addressable | |
2187 | unit for that architecture. */ | |
2188 | if (object == TARGET_OBJECT_MEMORY | |
2189 | || object == TARGET_OBJECT_STACK_MEMORY | |
2190 | || object == TARGET_OBJECT_CODE_MEMORY | |
2191 | || object == TARGET_OBJECT_RAW_MEMORY) | |
2192 | unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); | |
a76d924d DJ |
2193 | |
2194 | /* Give the progress callback a chance to set up. */ | |
2195 | if (progress) | |
2196 | (*progress) (0, baton); | |
2197 | ||
279a6fed | 2198 | while (xfered_total < len) |
1e3ff5ad | 2199 | { |
279a6fed | 2200 | ULONGEST xfered_partial; |
9b409511 YQ |
2201 | enum target_xfer_status status; |
2202 | ||
2203 | status = target_write_partial (ops, object, annex, | |
d309493c | 2204 | buf + xfered_total * unit_size, |
279a6fed SM |
2205 | offset + xfered_total, len - xfered_total, |
2206 | &xfered_partial); | |
cf7a04e8 | 2207 | |
5c328c05 | 2208 | if (status != TARGET_XFER_OK) |
279a6fed | 2209 | return status == TARGET_XFER_EOF ? xfered_total : TARGET_XFER_E_IO; |
cf7a04e8 DJ |
2210 | |
2211 | if (progress) | |
279a6fed | 2212 | (*progress) (xfered_partial, baton); |
cf7a04e8 | 2213 | |
279a6fed | 2214 | xfered_total += xfered_partial; |
1e3ff5ad AC |
2215 | QUIT; |
2216 | } | |
2217 | return len; | |
2218 | } | |
2219 | ||
7f79c47e DE |
2220 | /* For docs on target_write see target.h. */ |
2221 | ||
cf7a04e8 DJ |
2222 | LONGEST |
2223 | target_write (struct target_ops *ops, | |
2224 | enum target_object object, | |
2225 | const char *annex, const gdb_byte *buf, | |
2226 | ULONGEST offset, LONGEST len) | |
2227 | { | |
2228 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
2229 | NULL, NULL); | |
2230 | } | |
2231 | ||
9018be22 SM |
2232 | /* Help for target_read_alloc and target_read_stralloc. See their comments |
2233 | for details. */ | |
13547ab6 | 2234 | |
9018be22 SM |
2235 | template <typename T> |
2236 | gdb::optional<gdb::def_vector<T>> | |
159f81f3 | 2237 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, |
9018be22 | 2238 | const char *annex) |
13547ab6 | 2239 | { |
9018be22 SM |
2240 | gdb::def_vector<T> buf; |
2241 | size_t buf_pos = 0; | |
2242 | const int chunk = 4096; | |
13547ab6 DJ |
2243 | |
2244 | /* This function does not have a length parameter; it reads the | |
2245 | entire OBJECT). Also, it doesn't support objects fetched partly | |
2246 | from one target and partly from another (in a different stratum, | |
2247 | e.g. a core file and an executable). Both reasons make it | |
2248 | unsuitable for reading memory. */ | |
2249 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
2250 | ||
2251 | /* Start by reading up to 4K at a time. The target will throttle | |
2252 | this number down if necessary. */ | |
13547ab6 DJ |
2253 | while (1) |
2254 | { | |
9b409511 YQ |
2255 | ULONGEST xfered_len; |
2256 | enum target_xfer_status status; | |
2257 | ||
9018be22 SM |
2258 | buf.resize (buf_pos + chunk); |
2259 | ||
2260 | status = target_read_partial (ops, object, annex, | |
2261 | (gdb_byte *) &buf[buf_pos], | |
2262 | buf_pos, chunk, | |
9b409511 YQ |
2263 | &xfered_len); |
2264 | ||
2265 | if (status == TARGET_XFER_EOF) | |
13547ab6 DJ |
2266 | { |
2267 | /* Read all there was. */ | |
9018be22 SM |
2268 | buf.resize (buf_pos); |
2269 | return buf; | |
13547ab6 | 2270 | } |
9b409511 YQ |
2271 | else if (status != TARGET_XFER_OK) |
2272 | { | |
2273 | /* An error occurred. */ | |
9018be22 | 2274 | return {}; |
9b409511 | 2275 | } |
13547ab6 | 2276 | |
9b409511 | 2277 | buf_pos += xfered_len; |
13547ab6 | 2278 | |
13547ab6 DJ |
2279 | QUIT; |
2280 | } | |
2281 | } | |
2282 | ||
9018be22 | 2283 | /* See target.h */ |
159f81f3 | 2284 | |
9018be22 | 2285 | gdb::optional<gdb::byte_vector> |
159f81f3 | 2286 | target_read_alloc (struct target_ops *ops, enum target_object object, |
9018be22 | 2287 | const char *annex) |
159f81f3 | 2288 | { |
9018be22 | 2289 | return target_read_alloc_1<gdb_byte> (ops, object, annex); |
159f81f3 DJ |
2290 | } |
2291 | ||
b7b030ad | 2292 | /* See target.h. */ |
159f81f3 | 2293 | |
9018be22 | 2294 | gdb::optional<gdb::char_vector> |
159f81f3 DJ |
2295 | target_read_stralloc (struct target_ops *ops, enum target_object object, |
2296 | const char *annex) | |
2297 | { | |
9018be22 SM |
2298 | gdb::optional<gdb::char_vector> buf |
2299 | = target_read_alloc_1<char> (ops, object, annex); | |
159f81f3 | 2300 | |
9018be22 SM |
2301 | if (!buf) |
2302 | return {}; | |
159f81f3 | 2303 | |
d00a27c5 | 2304 | if (buf->empty () || buf->back () != '\0') |
9018be22 | 2305 | buf->push_back ('\0'); |
7313baad UW |
2306 | |
2307 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
9018be22 SM |
2308 | for (auto it = std::find (buf->begin (), buf->end (), '\0'); |
2309 | it != buf->end (); it++) | |
2310 | if (*it != '\0') | |
7313baad UW |
2311 | { |
2312 | warning (_("target object %d, annex %s, " | |
2313 | "contained unexpected null characters"), | |
2314 | (int) object, annex ? annex : "(none)"); | |
2315 | break; | |
2316 | } | |
159f81f3 | 2317 | |
9018be22 | 2318 | return buf; |
159f81f3 DJ |
2319 | } |
2320 | ||
b6591e8b AC |
2321 | /* Memory transfer methods. */ |
2322 | ||
2323 | void | |
1b0ba102 | 2324 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
2325 | LONGEST len) |
2326 | { | |
07b82ea5 PA |
2327 | /* This method is used to read from an alternate, non-current |
2328 | target. This read must bypass the overlay support (as symbols | |
2329 | don't match this target), and GDB's internal cache (wrong cache | |
2330 | for this target). */ | |
2331 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) | |
b6591e8b | 2332 | != len) |
578d3588 | 2333 | memory_error (TARGET_XFER_E_IO, addr); |
b6591e8b AC |
2334 | } |
2335 | ||
2336 | ULONGEST | |
5d502164 MS |
2337 | get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr, |
2338 | int len, enum bfd_endian byte_order) | |
b6591e8b | 2339 | { |
f6519ebc | 2340 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
2341 | |
2342 | gdb_assert (len <= sizeof (buf)); | |
2343 | get_target_memory (ops, addr, buf, len); | |
e17a4113 | 2344 | return extract_unsigned_integer (buf, len, byte_order); |
b6591e8b AC |
2345 | } |
2346 | ||
3db08215 MM |
2347 | /* See target.h. */ |
2348 | ||
d914c394 SS |
2349 | int |
2350 | target_insert_breakpoint (struct gdbarch *gdbarch, | |
2351 | struct bp_target_info *bp_tgt) | |
2352 | { | |
2353 | if (!may_insert_breakpoints) | |
2354 | { | |
2355 | warning (_("May not insert breakpoints")); | |
2356 | return 1; | |
2357 | } | |
2358 | ||
8b88a78e | 2359 | return current_top_target ()->insert_breakpoint (gdbarch, bp_tgt); |
d914c394 SS |
2360 | } |
2361 | ||
3db08215 MM |
2362 | /* See target.h. */ |
2363 | ||
d914c394 | 2364 | int |
6b84065d | 2365 | target_remove_breakpoint (struct gdbarch *gdbarch, |
73971819 PA |
2366 | struct bp_target_info *bp_tgt, |
2367 | enum remove_bp_reason reason) | |
d914c394 SS |
2368 | { |
2369 | /* This is kind of a weird case to handle, but the permission might | |
2370 | have been changed after breakpoints were inserted - in which case | |
2371 | we should just take the user literally and assume that any | |
2372 | breakpoints should be left in place. */ | |
2373 | if (!may_insert_breakpoints) | |
2374 | { | |
2375 | warning (_("May not remove breakpoints")); | |
2376 | return 1; | |
2377 | } | |
2378 | ||
8b88a78e | 2379 | return current_top_target ()->remove_breakpoint (gdbarch, bp_tgt, reason); |
d914c394 SS |
2380 | } |
2381 | ||
c906108c | 2382 | static void |
1d12d88f | 2383 | info_target_command (const char *args, int from_tty) |
c906108c | 2384 | { |
c906108c | 2385 | int has_all_mem = 0; |
c5aa993b | 2386 | |
a42d7dd8 TT |
2387 | if (current_program_space->symfile_object_file != NULL) |
2388 | { | |
2389 | objfile *objf = current_program_space->symfile_object_file; | |
2390 | printf_unfiltered (_("Symbols from \"%s\".\n"), | |
2391 | objfile_name (objf)); | |
2392 | } | |
c906108c | 2393 | |
b6a8c27b | 2394 | for (target_ops *t = current_top_target (); t != NULL; t = t->beneath ()) |
c906108c | 2395 | { |
f6ac5f3d | 2396 | if (!t->has_memory ()) |
c906108c SS |
2397 | continue; |
2398 | ||
66b4deae | 2399 | if ((int) (t->stratum ()) <= (int) dummy_stratum) |
c906108c SS |
2400 | continue; |
2401 | if (has_all_mem) | |
3e43a32a MS |
2402 | printf_unfiltered (_("\tWhile running this, " |
2403 | "GDB does not access memory from...\n")); | |
f6ac5f3d PA |
2404 | printf_unfiltered ("%s:\n", t->longname ()); |
2405 | t->files_info (); | |
2406 | has_all_mem = t->has_all_memory (); | |
c906108c SS |
2407 | } |
2408 | } | |
2409 | ||
fd79ecee DJ |
2410 | /* This function is called before any new inferior is created, e.g. |
2411 | by running a program, attaching, or connecting to a target. | |
2412 | It cleans up any state from previous invocations which might | |
2413 | change between runs. This is a subset of what target_preopen | |
2414 | resets (things which might change between targets). */ | |
2415 | ||
2416 | void | |
2417 | target_pre_inferior (int from_tty) | |
2418 | { | |
c378eb4e | 2419 | /* Clear out solib state. Otherwise the solib state of the previous |
b9db4ced | 2420 | inferior might have survived and is entirely wrong for the new |
c378eb4e | 2421 | target. This has been observed on GNU/Linux using glibc 2.3. How |
b9db4ced UW |
2422 | to reproduce: |
2423 | ||
2424 | bash$ ./foo& | |
2425 | [1] 4711 | |
2426 | bash$ ./foo& | |
2427 | [1] 4712 | |
2428 | bash$ gdb ./foo | |
2429 | [...] | |
2430 | (gdb) attach 4711 | |
2431 | (gdb) detach | |
2432 | (gdb) attach 4712 | |
2433 | Cannot access memory at address 0xdeadbeef | |
2434 | */ | |
b9db4ced | 2435 | |
50c71eaf PA |
2436 | /* In some OSs, the shared library list is the same/global/shared |
2437 | across inferiors. If code is shared between processes, so are | |
2438 | memory regions and features. */ | |
f5656ead | 2439 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
50c71eaf PA |
2440 | { |
2441 | no_shared_libraries (NULL, from_tty); | |
2442 | ||
2443 | invalidate_target_mem_regions (); | |
424163ea | 2444 | |
50c71eaf PA |
2445 | target_clear_description (); |
2446 | } | |
8ffcbaaf | 2447 | |
e9756d52 PP |
2448 | /* attach_flag may be set if the previous process associated with |
2449 | the inferior was attached to. */ | |
2450 | current_inferior ()->attach_flag = 0; | |
2451 | ||
5d5658a1 PA |
2452 | current_inferior ()->highest_thread_num = 0; |
2453 | ||
8ffcbaaf | 2454 | agent_capability_invalidate (); |
fd79ecee DJ |
2455 | } |
2456 | ||
c906108c SS |
2457 | /* This is to be called by the open routine before it does |
2458 | anything. */ | |
2459 | ||
2460 | void | |
fba45db2 | 2461 | target_preopen (int from_tty) |
c906108c | 2462 | { |
c5aa993b | 2463 | dont_repeat (); |
c906108c | 2464 | |
5b6d1e4f | 2465 | if (current_inferior ()->pid != 0) |
c5aa993b | 2466 | { |
adf40b2e | 2467 | if (!from_tty |
55f6301a | 2468 | || !target_has_execution () |
b8fa0bfa | 2469 | || query (_("A program is being debugged already. Kill it? "))) |
5b6d1e4f PA |
2470 | { |
2471 | /* Core inferiors actually should be detached, not | |
2472 | killed. */ | |
55f6301a | 2473 | if (target_has_execution ()) |
5b6d1e4f PA |
2474 | target_kill (); |
2475 | else | |
2476 | target_detach (current_inferior (), 0); | |
2477 | } | |
c906108c | 2478 | else |
8a3fe4f8 | 2479 | error (_("Program not killed.")); |
c906108c SS |
2480 | } |
2481 | ||
2482 | /* Calling target_kill may remove the target from the stack. But if | |
2483 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
2484 | /* Leave the exec target, though. The user may be switching from a |
2485 | live process to a core of the same program. */ | |
460014f5 | 2486 | pop_all_targets_above (file_stratum); |
fd79ecee DJ |
2487 | |
2488 | target_pre_inferior (from_tty); | |
c906108c SS |
2489 | } |
2490 | ||
6bd6f3b6 | 2491 | /* See target.h. */ |
c906108c SS |
2492 | |
2493 | void | |
6e1e1966 | 2494 | target_detach (inferior *inf, int from_tty) |
c906108c | 2495 | { |
5783e150 PW |
2496 | /* After we have detached, we will clear the register cache for this inferior |
2497 | by calling registers_changed_ptid. We must save the pid_ptid before | |
2498 | detaching, as the target detach method will clear inf->pid. */ | |
2499 | ptid_t save_pid_ptid = ptid_t (inf->pid); | |
2500 | ||
6e1e1966 SM |
2501 | /* As long as some to_detach implementations rely on the current_inferior |
2502 | (either directly, or indirectly, like through target_gdbarch or by | |
2503 | reading memory), INF needs to be the current inferior. When that | |
2504 | requirement will become no longer true, then we can remove this | |
2505 | assertion. */ | |
2506 | gdb_assert (inf == current_inferior ()); | |
2507 | ||
24291992 PA |
2508 | prepare_for_detach (); |
2509 | ||
5b6d1e4f PA |
2510 | /* Hold a strong reference because detaching may unpush the |
2511 | target. */ | |
2512 | auto proc_target_ref = target_ops_ref::new_reference (inf->process_target ()); | |
2513 | ||
8b88a78e | 2514 | current_top_target ()->detach (inf, from_tty); |
799efbe8 | 2515 | |
5b6d1e4f PA |
2516 | process_stratum_target *proc_target |
2517 | = as_process_stratum_target (proc_target_ref.get ()); | |
2518 | ||
2519 | registers_changed_ptid (proc_target, save_pid_ptid); | |
799efbe8 PW |
2520 | |
2521 | /* We have to ensure we have no frame cache left. Normally, | |
5783e150 PW |
2522 | registers_changed_ptid (save_pid_ptid) calls reinit_frame_cache when |
2523 | inferior_ptid matches save_pid_ptid, but in our case, it does not | |
799efbe8 PW |
2524 | call it, as inferior_ptid has been reset. */ |
2525 | reinit_frame_cache (); | |
c906108c SS |
2526 | } |
2527 | ||
6ad8ae5c | 2528 | void |
fee354ee | 2529 | target_disconnect (const char *args, int from_tty) |
6ad8ae5c | 2530 | { |
50c71eaf PA |
2531 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
2532 | are global across processes, we have to remove them before | |
2533 | disconnecting. */ | |
74960c60 VP |
2534 | remove_breakpoints (); |
2535 | ||
8b88a78e | 2536 | current_top_target ()->disconnect (args, from_tty); |
6ad8ae5c DJ |
2537 | } |
2538 | ||
f2b9e3df SDJ |
2539 | /* See target/target.h. */ |
2540 | ||
117de6a9 | 2541 | ptid_t |
b60cea74 TT |
2542 | target_wait (ptid_t ptid, struct target_waitstatus *status, |
2543 | target_wait_flags options) | |
117de6a9 | 2544 | { |
d3a07122 SM |
2545 | target_ops *target = current_top_target (); |
2546 | ||
2547 | if (!target->can_async_p ()) | |
2548 | gdb_assert ((options & TARGET_WNOHANG) == 0); | |
2549 | ||
2550 | return target->wait (ptid, status, options); | |
117de6a9 PA |
2551 | } |
2552 | ||
0b333c5e PA |
2553 | /* See target.h. */ |
2554 | ||
2555 | ptid_t | |
2556 | default_target_wait (struct target_ops *ops, | |
2557 | ptid_t ptid, struct target_waitstatus *status, | |
b60cea74 | 2558 | target_wait_flags options) |
0b333c5e PA |
2559 | { |
2560 | status->kind = TARGET_WAITKIND_IGNORE; | |
2561 | return minus_one_ptid; | |
2562 | } | |
2563 | ||
a068643d | 2564 | std::string |
117de6a9 PA |
2565 | target_pid_to_str (ptid_t ptid) |
2566 | { | |
8b88a78e | 2567 | return current_top_target ()->pid_to_str (ptid); |
117de6a9 PA |
2568 | } |
2569 | ||
73ede765 | 2570 | const char * |
4694da01 TT |
2571 | target_thread_name (struct thread_info *info) |
2572 | { | |
5b6d1e4f PA |
2573 | gdb_assert (info->inf == current_inferior ()); |
2574 | ||
8b88a78e | 2575 | return current_top_target ()->thread_name (info); |
4694da01 TT |
2576 | } |
2577 | ||
e04ee09e KB |
2578 | struct thread_info * |
2579 | target_thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
2580 | int handle_len, | |
2581 | struct inferior *inf) | |
2582 | { | |
8b88a78e | 2583 | return current_top_target ()->thread_handle_to_thread_info (thread_handle, |
f6ac5f3d | 2584 | handle_len, inf); |
e04ee09e KB |
2585 | } |
2586 | ||
3d6c6204 KB |
2587 | /* See target.h. */ |
2588 | ||
2589 | gdb::byte_vector | |
2590 | target_thread_info_to_thread_handle (struct thread_info *tip) | |
2591 | { | |
2592 | return current_top_target ()->thread_info_to_thread_handle (tip); | |
2593 | } | |
2594 | ||
e1ac3328 | 2595 | void |
2ea28649 | 2596 | target_resume (ptid_t ptid, int step, enum gdb_signal signal) |
e1ac3328 | 2597 | { |
5b6d1e4f PA |
2598 | process_stratum_target *curr_target = current_inferior ()->process_target (); |
2599 | ||
4e5d721f | 2600 | target_dcache_invalidate (); |
28439f5e | 2601 | |
8b88a78e | 2602 | current_top_target ()->resume (ptid, step, signal); |
28439f5e | 2603 | |
5b6d1e4f | 2604 | registers_changed_ptid (curr_target, ptid); |
251bde03 | 2605 | /* We only set the internal executing state here. The user/frontend |
f2ffa92b PA |
2606 | running state is set at a higher level. This also clears the |
2607 | thread's stop_pc as side effect. */ | |
719546c4 | 2608 | set_executing (curr_target, ptid, true); |
5b6d1e4f | 2609 | clear_inline_frame_state (curr_target, ptid); |
e1ac3328 | 2610 | } |
2455069d | 2611 | |
85ad3aaf PA |
2612 | /* If true, target_commit_resume is a nop. */ |
2613 | static int defer_target_commit_resume; | |
2614 | ||
2615 | /* See target.h. */ | |
2616 | ||
2617 | void | |
2618 | target_commit_resume (void) | |
2619 | { | |
85ad3aaf PA |
2620 | if (defer_target_commit_resume) |
2621 | return; | |
2622 | ||
8b88a78e | 2623 | current_top_target ()->commit_resume (); |
85ad3aaf PA |
2624 | } |
2625 | ||
2626 | /* See target.h. */ | |
2627 | ||
a9bc57b9 TT |
2628 | scoped_restore_tmpl<int> |
2629 | make_scoped_defer_target_commit_resume () | |
85ad3aaf | 2630 | { |
a9bc57b9 | 2631 | return make_scoped_restore (&defer_target_commit_resume, 1); |
85ad3aaf PA |
2632 | } |
2633 | ||
2455069d | 2634 | void |
adc6a863 | 2635 | target_pass_signals (gdb::array_view<const unsigned char> pass_signals) |
2455069d | 2636 | { |
adc6a863 | 2637 | current_top_target ()->pass_signals (pass_signals); |
2455069d UW |
2638 | } |
2639 | ||
9b224c5e | 2640 | void |
adc6a863 | 2641 | target_program_signals (gdb::array_view<const unsigned char> program_signals) |
9b224c5e | 2642 | { |
adc6a863 | 2643 | current_top_target ()->program_signals (program_signals); |
9b224c5e PA |
2644 | } |
2645 | ||
5ab2fbf1 SM |
2646 | static bool |
2647 | default_follow_fork (struct target_ops *self, bool follow_child, | |
2648 | bool detach_fork) | |
098dba18 TT |
2649 | { |
2650 | /* Some target returned a fork event, but did not know how to follow it. */ | |
2651 | internal_error (__FILE__, __LINE__, | |
2652 | _("could not find a target to follow fork")); | |
2653 | } | |
2654 | ||
ee057212 DJ |
2655 | /* Look through the list of possible targets for a target that can |
2656 | follow forks. */ | |
2657 | ||
5ab2fbf1 SM |
2658 | bool |
2659 | target_follow_fork (bool follow_child, bool detach_fork) | |
ee057212 | 2660 | { |
8b88a78e | 2661 | return current_top_target ()->follow_fork (follow_child, detach_fork); |
ee057212 DJ |
2662 | } |
2663 | ||
94585166 DB |
2664 | /* Target wrapper for follow exec hook. */ |
2665 | ||
2666 | void | |
4ca51187 | 2667 | target_follow_exec (struct inferior *inf, const char *execd_pathname) |
94585166 | 2668 | { |
8b88a78e | 2669 | current_top_target ()->follow_exec (inf, execd_pathname); |
94585166 DB |
2670 | } |
2671 | ||
8d657035 TT |
2672 | static void |
2673 | default_mourn_inferior (struct target_ops *self) | |
2674 | { | |
2675 | internal_error (__FILE__, __LINE__, | |
2676 | _("could not find a target to follow mourn inferior")); | |
2677 | } | |
2678 | ||
136d6dae | 2679 | void |
bc1e6c81 | 2680 | target_mourn_inferior (ptid_t ptid) |
136d6dae | 2681 | { |
dffdd8b5 | 2682 | gdb_assert (ptid.pid () == inferior_ptid.pid ()); |
8b88a78e | 2683 | current_top_target ()->mourn_inferior (); |
136d6dae | 2684 | |
8d657035 TT |
2685 | /* We no longer need to keep handles on any of the object files. |
2686 | Make sure to release them to avoid unnecessarily locking any | |
2687 | of them while we're not actually debugging. */ | |
2688 | bfd_cache_close_all (); | |
136d6dae VP |
2689 | } |
2690 | ||
424163ea DJ |
2691 | /* Look for a target which can describe architectural features, starting |
2692 | from TARGET. If we find one, return its description. */ | |
2693 | ||
2694 | const struct target_desc * | |
2695 | target_read_description (struct target_ops *target) | |
2696 | { | |
f6ac5f3d | 2697 | return target->read_description (); |
424163ea DJ |
2698 | } |
2699 | ||
08388c79 | 2700 | |
58a5184e TT |
2701 | /* Default implementation of memory-searching. */ |
2702 | ||
2703 | static int | |
2704 | default_search_memory (struct target_ops *self, | |
2705 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2706 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2707 | CORE_ADDR *found_addrp) | |
2708 | { | |
4a72de73 TT |
2709 | auto read_memory = [=] (CORE_ADDR addr, gdb_byte *result, size_t len) |
2710 | { | |
2711 | return target_read (current_top_target (), TARGET_OBJECT_MEMORY, NULL, | |
2712 | result, addr, len) == len; | |
2713 | }; | |
2714 | ||
58a5184e | 2715 | /* Start over from the top of the target stack. */ |
4a72de73 | 2716 | return simple_search_memory (read_memory, start_addr, search_space_len, |
58a5184e TT |
2717 | pattern, pattern_len, found_addrp); |
2718 | } | |
2719 | ||
08388c79 DE |
2720 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the |
2721 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2722 | ||
2723 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2724 | requiring halting of the search (e.g. memory read error). | |
2725 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2726 | ||
2727 | int | |
2728 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2729 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2730 | CORE_ADDR *found_addrp) | |
2731 | { | |
8b88a78e | 2732 | return current_top_target ()->search_memory (start_addr, search_space_len, |
f6ac5f3d | 2733 | pattern, pattern_len, found_addrp); |
08388c79 DE |
2734 | } |
2735 | ||
8edfe269 DJ |
2736 | /* Look through the currently pushed targets. If none of them will |
2737 | be able to restart the currently running process, issue an error | |
2738 | message. */ | |
2739 | ||
2740 | void | |
2741 | target_require_runnable (void) | |
2742 | { | |
b6a8c27b | 2743 | for (target_ops *t = current_top_target (); t != NULL; t = t->beneath ()) |
8edfe269 DJ |
2744 | { |
2745 | /* If this target knows how to create a new program, then | |
2746 | assume we will still be able to after killing the current | |
2747 | one. Either killing and mourning will not pop T, or else | |
2748 | find_default_run_target will find it again. */ | |
f6ac5f3d | 2749 | if (t->can_create_inferior ()) |
8edfe269 DJ |
2750 | return; |
2751 | ||
548740d6 | 2752 | /* Do not worry about targets at certain strata that can not |
8edfe269 DJ |
2753 | create inferiors. Assume they will be pushed again if |
2754 | necessary, and continue to the process_stratum. */ | |
66b4deae | 2755 | if (t->stratum () > process_stratum) |
8edfe269 DJ |
2756 | continue; |
2757 | ||
3e43a32a MS |
2758 | error (_("The \"%s\" target does not support \"run\". " |
2759 | "Try \"help target\" or \"continue\"."), | |
f6ac5f3d | 2760 | t->shortname ()); |
8edfe269 DJ |
2761 | } |
2762 | ||
2763 | /* This function is only called if the target is running. In that | |
2764 | case there should have been a process_stratum target and it | |
c378eb4e | 2765 | should either know how to create inferiors, or not... */ |
9b20d036 | 2766 | internal_error (__FILE__, __LINE__, _("No targets found")); |
8edfe269 DJ |
2767 | } |
2768 | ||
6a3cb8e8 PA |
2769 | /* Whether GDB is allowed to fall back to the default run target for |
2770 | "run", "attach", etc. when no target is connected yet. */ | |
491144b5 | 2771 | static bool auto_connect_native_target = true; |
6a3cb8e8 PA |
2772 | |
2773 | static void | |
2774 | show_auto_connect_native_target (struct ui_file *file, int from_tty, | |
2775 | struct cmd_list_element *c, const char *value) | |
2776 | { | |
2777 | fprintf_filtered (file, | |
2778 | _("Whether GDB may automatically connect to the " | |
2779 | "native target is %s.\n"), | |
2780 | value); | |
2781 | } | |
2782 | ||
d9f719f1 PA |
2783 | /* A pointer to the target that can respond to "run" or "attach". |
2784 | Native targets are always singletons and instantiated early at GDB | |
2785 | startup. */ | |
2786 | static target_ops *the_native_target; | |
2787 | ||
2788 | /* See target.h. */ | |
2789 | ||
2790 | void | |
2791 | set_native_target (target_ops *target) | |
2792 | { | |
2793 | if (the_native_target != NULL) | |
2794 | internal_error (__FILE__, __LINE__, | |
2795 | _("native target already set (\"%s\")."), | |
2796 | the_native_target->longname ()); | |
2797 | ||
2798 | the_native_target = target; | |
2799 | } | |
2800 | ||
2801 | /* See target.h. */ | |
2802 | ||
2803 | target_ops * | |
2804 | get_native_target () | |
2805 | { | |
2806 | return the_native_target; | |
2807 | } | |
2808 | ||
c906108c SS |
2809 | /* Look through the list of possible targets for a target that can |
2810 | execute a run or attach command without any other data. This is | |
2811 | used to locate the default process stratum. | |
2812 | ||
5f667f2d PA |
2813 | If DO_MESG is not NULL, the result is always valid (error() is |
2814 | called for errors); else, return NULL on error. */ | |
c906108c SS |
2815 | |
2816 | static struct target_ops * | |
a121b7c1 | 2817 | find_default_run_target (const char *do_mesg) |
c906108c | 2818 | { |
d9f719f1 PA |
2819 | if (auto_connect_native_target && the_native_target != NULL) |
2820 | return the_native_target; | |
c906108c | 2821 | |
d9f719f1 PA |
2822 | if (do_mesg != NULL) |
2823 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
2824 | return NULL; | |
c906108c SS |
2825 | } |
2826 | ||
b3ccfe11 | 2827 | /* See target.h. */ |
c906108c | 2828 | |
b3ccfe11 TT |
2829 | struct target_ops * |
2830 | find_attach_target (void) | |
c906108c | 2831 | { |
b3ccfe11 | 2832 | /* If a target on the current stack can attach, use it. */ |
b6a8c27b | 2833 | for (target_ops *t = current_top_target (); t != NULL; t = t->beneath ()) |
b3ccfe11 | 2834 | { |
f6ac5f3d | 2835 | if (t->can_attach ()) |
d9f719f1 | 2836 | return t; |
b3ccfe11 | 2837 | } |
c906108c | 2838 | |
b3ccfe11 | 2839 | /* Otherwise, use the default run target for attaching. */ |
d9f719f1 | 2840 | return find_default_run_target ("attach"); |
b84876c2 PA |
2841 | } |
2842 | ||
b3ccfe11 | 2843 | /* See target.h. */ |
b84876c2 | 2844 | |
b3ccfe11 TT |
2845 | struct target_ops * |
2846 | find_run_target (void) | |
9908b566 | 2847 | { |
f6ac5f3d | 2848 | /* If a target on the current stack can run, use it. */ |
b6a8c27b | 2849 | for (target_ops *t = current_top_target (); t != NULL; t = t->beneath ()) |
b3ccfe11 | 2850 | { |
f6ac5f3d | 2851 | if (t->can_create_inferior ()) |
d9f719f1 | 2852 | return t; |
b3ccfe11 | 2853 | } |
5d502164 | 2854 | |
b3ccfe11 | 2855 | /* Otherwise, use the default run target. */ |
d9f719f1 | 2856 | return find_default_run_target ("run"); |
9908b566 VP |
2857 | } |
2858 | ||
f6ac5f3d PA |
2859 | bool |
2860 | target_ops::info_proc (const char *args, enum info_proc_what what) | |
2861 | { | |
2862 | return false; | |
2863 | } | |
2864 | ||
145b16a9 UW |
2865 | /* Implement the "info proc" command. */ |
2866 | ||
451b7c33 | 2867 | int |
7bc112c1 | 2868 | target_info_proc (const char *args, enum info_proc_what what) |
145b16a9 UW |
2869 | { |
2870 | struct target_ops *t; | |
2871 | ||
2872 | /* If we're already connected to something that can get us OS | |
2873 | related data, use it. Otherwise, try using the native | |
2874 | target. */ | |
f6ac5f3d PA |
2875 | t = find_target_at (process_stratum); |
2876 | if (t == NULL) | |
145b16a9 UW |
2877 | t = find_default_run_target (NULL); |
2878 | ||
b6a8c27b | 2879 | for (; t != NULL; t = t->beneath ()) |
145b16a9 | 2880 | { |
f6ac5f3d | 2881 | if (t->info_proc (args, what)) |
145b16a9 | 2882 | { |
145b16a9 UW |
2883 | if (targetdebug) |
2884 | fprintf_unfiltered (gdb_stdlog, | |
2885 | "target_info_proc (\"%s\", %d)\n", args, what); | |
2886 | ||
451b7c33 | 2887 | return 1; |
145b16a9 UW |
2888 | } |
2889 | } | |
2890 | ||
451b7c33 | 2891 | return 0; |
145b16a9 UW |
2892 | } |
2893 | ||
03583c20 | 2894 | static int |
2bfc0540 | 2895 | find_default_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
2896 | { |
2897 | struct target_ops *t; | |
2898 | ||
2899 | t = find_default_run_target (NULL); | |
f6ac5f3d PA |
2900 | if (t != NULL) |
2901 | return t->supports_disable_randomization (); | |
03583c20 UW |
2902 | return 0; |
2903 | } | |
2904 | ||
2905 | int | |
2906 | target_supports_disable_randomization (void) | |
2907 | { | |
8b88a78e | 2908 | return current_top_target ()->supports_disable_randomization (); |
03583c20 | 2909 | } |
9908b566 | 2910 | |
1fb77080 SDJ |
2911 | /* See target/target.h. */ |
2912 | ||
2913 | int | |
2914 | target_supports_multi_process (void) | |
2915 | { | |
8b88a78e | 2916 | return current_top_target ()->supports_multi_process (); |
1fb77080 SDJ |
2917 | } |
2918 | ||
b7b030ad TT |
2919 | /* See target.h. */ |
2920 | ||
9018be22 | 2921 | gdb::optional<gdb::char_vector> |
07e059b5 VP |
2922 | target_get_osdata (const char *type) |
2923 | { | |
07e059b5 VP |
2924 | struct target_ops *t; |
2925 | ||
739ef7fb PA |
2926 | /* If we're already connected to something that can get us OS |
2927 | related data, use it. Otherwise, try using the native | |
2928 | target. */ | |
f6ac5f3d PA |
2929 | t = find_target_at (process_stratum); |
2930 | if (t == NULL) | |
739ef7fb | 2931 | t = find_default_run_target ("get OS data"); |
07e059b5 VP |
2932 | |
2933 | if (!t) | |
9018be22 | 2934 | return {}; |
07e059b5 | 2935 | |
6d097e65 | 2936 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
2937 | } |
2938 | ||
8eaff7cd TT |
2939 | /* Determine the current address space of thread PTID. */ |
2940 | ||
2941 | struct address_space * | |
2942 | target_thread_address_space (ptid_t ptid) | |
2943 | { | |
2944 | struct address_space *aspace; | |
2945 | ||
8b88a78e | 2946 | aspace = current_top_target ()->thread_address_space (ptid); |
8eaff7cd TT |
2947 | gdb_assert (aspace != NULL); |
2948 | ||
8eaff7cd TT |
2949 | return aspace; |
2950 | } | |
2951 | ||
b6a8c27b PA |
2952 | /* See target.h. */ |
2953 | ||
2954 | target_ops * | |
2955 | target_ops::beneath () const | |
2956 | { | |
5b6d1e4f | 2957 | return current_inferior ()->find_target_beneath (this); |
b6a8c27b PA |
2958 | } |
2959 | ||
f6ac5f3d PA |
2960 | void |
2961 | target_ops::close () | |
2962 | { | |
2963 | } | |
2964 | ||
2965 | bool | |
2966 | target_ops::can_attach () | |
2967 | { | |
2968 | return 0; | |
2969 | } | |
2970 | ||
2971 | void | |
2972 | target_ops::attach (const char *, int) | |
2973 | { | |
2974 | gdb_assert_not_reached ("target_ops::attach called"); | |
2975 | } | |
2976 | ||
2977 | bool | |
2978 | target_ops::can_create_inferior () | |
2979 | { | |
2980 | return 0; | |
2981 | } | |
2982 | ||
2983 | void | |
2984 | target_ops::create_inferior (const char *, const std::string &, | |
2985 | char **, int) | |
2986 | { | |
2987 | gdb_assert_not_reached ("target_ops::create_inferior called"); | |
2988 | } | |
2989 | ||
57810aa7 | 2990 | bool |
f6ac5f3d PA |
2991 | target_ops::can_run () |
2992 | { | |
57810aa7 | 2993 | return false; |
f6ac5f3d PA |
2994 | } |
2995 | ||
2996 | int | |
2997 | target_can_run () | |
2998 | { | |
b6a8c27b | 2999 | for (target_ops *t = current_top_target (); t != NULL; t = t->beneath ()) |
f6ac5f3d PA |
3000 | { |
3001 | if (t->can_run ()) | |
3002 | return 1; | |
3003 | } | |
3004 | ||
3005 | return 0; | |
3006 | } | |
7313baad UW |
3007 | |
3008 | /* Target file operations. */ | |
3009 | ||
3010 | static struct target_ops * | |
3011 | default_fileio_target (void) | |
3012 | { | |
f6ac5f3d PA |
3013 | struct target_ops *t; |
3014 | ||
7313baad UW |
3015 | /* If we're already connected to something that can perform |
3016 | file I/O, use it. Otherwise, try using the native target. */ | |
f6ac5f3d PA |
3017 | t = find_target_at (process_stratum); |
3018 | if (t != NULL) | |
3019 | return t; | |
3020 | return find_default_run_target ("file I/O"); | |
7313baad UW |
3021 | } |
3022 | ||
1c4b552b GB |
3023 | /* File handle for target file operations. */ |
3024 | ||
5ff79300 | 3025 | struct fileio_fh_t |
1c4b552b | 3026 | { |
20db9c52 PA |
3027 | /* The target on which this file is open. NULL if the target is |
3028 | meanwhile closed while the handle is open. */ | |
5ff79300 | 3029 | target_ops *target; |
1c4b552b GB |
3030 | |
3031 | /* The file descriptor on the target. */ | |
5ff79300 | 3032 | int target_fd; |
1c4b552b | 3033 | |
5ff79300 PA |
3034 | /* Check whether this fileio_fh_t represents a closed file. */ |
3035 | bool is_closed () | |
3036 | { | |
3037 | return target_fd < 0; | |
3038 | } | |
3039 | }; | |
1c4b552b GB |
3040 | |
3041 | /* Vector of currently open file handles. The value returned by | |
3042 | target_fileio_open and passed as the FD argument to other | |
3043 | target_fileio_* functions is an index into this vector. This | |
3044 | vector's entries are never freed; instead, files are marked as | |
3045 | closed, and the handle becomes available for reuse. */ | |
5ff79300 | 3046 | static std::vector<fileio_fh_t> fileio_fhandles; |
1c4b552b GB |
3047 | |
3048 | /* Index into fileio_fhandles of the lowest handle that might be | |
3049 | closed. This permits handle reuse without searching the whole | |
3050 | list each time a new file is opened. */ | |
3051 | static int lowest_closed_fd; | |
3052 | ||
20db9c52 PA |
3053 | /* Invalidate the target associated with open handles that were open |
3054 | on target TARG, since we're about to close (and maybe destroy) the | |
3055 | target. The handles remain open from the client's perspective, but | |
3056 | trying to do anything with them other than closing them will fail | |
3057 | with EIO. */ | |
3058 | ||
3059 | static void | |
3060 | fileio_handles_invalidate_target (target_ops *targ) | |
3061 | { | |
3062 | for (fileio_fh_t &fh : fileio_fhandles) | |
3063 | if (fh.target == targ) | |
3064 | fh.target = NULL; | |
3065 | } | |
3066 | ||
1c4b552b GB |
3067 | /* Acquire a target fileio file descriptor. */ |
3068 | ||
3069 | static int | |
5ff79300 | 3070 | acquire_fileio_fd (target_ops *target, int target_fd) |
1c4b552b | 3071 | { |
1c4b552b | 3072 | /* Search for closed handles to reuse. */ |
5ff79300 PA |
3073 | for (; lowest_closed_fd < fileio_fhandles.size (); lowest_closed_fd++) |
3074 | { | |
3075 | fileio_fh_t &fh = fileio_fhandles[lowest_closed_fd]; | |
3076 | ||
3077 | if (fh.is_closed ()) | |
3078 | break; | |
3079 | } | |
1c4b552b GB |
3080 | |
3081 | /* Push a new handle if no closed handles were found. */ | |
5ff79300 PA |
3082 | if (lowest_closed_fd == fileio_fhandles.size ()) |
3083 | fileio_fhandles.push_back (fileio_fh_t {target, target_fd}); | |
3084 | else | |
3085 | fileio_fhandles[lowest_closed_fd] = {target, target_fd}; | |
1c4b552b | 3086 | |
5ff79300 PA |
3087 | /* Should no longer be marked closed. */ |
3088 | gdb_assert (!fileio_fhandles[lowest_closed_fd].is_closed ()); | |
1c4b552b GB |
3089 | |
3090 | /* Return its index, and start the next lookup at | |
3091 | the next index. */ | |
3092 | return lowest_closed_fd++; | |
3093 | } | |
3094 | ||
3095 | /* Release a target fileio file descriptor. */ | |
3096 | ||
3097 | static void | |
3098 | release_fileio_fd (int fd, fileio_fh_t *fh) | |
3099 | { | |
5ff79300 | 3100 | fh->target_fd = -1; |
325fac50 | 3101 | lowest_closed_fd = std::min (lowest_closed_fd, fd); |
1c4b552b GB |
3102 | } |
3103 | ||
3104 | /* Return a pointer to the fileio_fhandle_t corresponding to FD. */ | |
3105 | ||
5ff79300 PA |
3106 | static fileio_fh_t * |
3107 | fileio_fd_to_fh (int fd) | |
3108 | { | |
3109 | return &fileio_fhandles[fd]; | |
3110 | } | |
1c4b552b | 3111 | |
f6ac5f3d PA |
3112 | |
3113 | /* Default implementations of file i/o methods. We don't want these | |
3114 | to delegate automatically, because we need to know which target | |
3115 | supported the method, in order to call it directly from within | |
3116 | pread/pwrite, etc. */ | |
3117 | ||
3118 | int | |
3119 | target_ops::fileio_open (struct inferior *inf, const char *filename, | |
3120 | int flags, int mode, int warn_if_slow, | |
3121 | int *target_errno) | |
3122 | { | |
3123 | *target_errno = FILEIO_ENOSYS; | |
3124 | return -1; | |
3125 | } | |
3126 | ||
3127 | int | |
3128 | target_ops::fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
3129 | ULONGEST offset, int *target_errno) | |
3130 | { | |
3131 | *target_errno = FILEIO_ENOSYS; | |
3132 | return -1; | |
3133 | } | |
3134 | ||
3135 | int | |
3136 | target_ops::fileio_pread (int fd, gdb_byte *read_buf, int len, | |
3137 | ULONGEST offset, int *target_errno) | |
3138 | { | |
3139 | *target_errno = FILEIO_ENOSYS; | |
3140 | return -1; | |
3141 | } | |
3142 | ||
3143 | int | |
3144 | target_ops::fileio_fstat (int fd, struct stat *sb, int *target_errno) | |
3145 | { | |
3146 | *target_errno = FILEIO_ENOSYS; | |
3147 | return -1; | |
3148 | } | |
3149 | ||
3150 | int | |
3151 | target_ops::fileio_close (int fd, int *target_errno) | |
3152 | { | |
3153 | *target_errno = FILEIO_ENOSYS; | |
3154 | return -1; | |
3155 | } | |
3156 | ||
3157 | int | |
3158 | target_ops::fileio_unlink (struct inferior *inf, const char *filename, | |
3159 | int *target_errno) | |
3160 | { | |
3161 | *target_errno = FILEIO_ENOSYS; | |
3162 | return -1; | |
3163 | } | |
3164 | ||
3165 | gdb::optional<std::string> | |
3166 | target_ops::fileio_readlink (struct inferior *inf, const char *filename, | |
3167 | int *target_errno) | |
3168 | { | |
3169 | *target_errno = FILEIO_ENOSYS; | |
3170 | return {}; | |
3171 | } | |
3172 | ||
4111f652 | 3173 | /* See target.h. */ |
12e2a5fd | 3174 | |
4111f652 PA |
3175 | int |
3176 | target_fileio_open (struct inferior *inf, const char *filename, | |
3177 | int flags, int mode, bool warn_if_slow, int *target_errno) | |
7313baad | 3178 | { |
b6a8c27b | 3179 | for (target_ops *t = default_fileio_target (); t != NULL; t = t->beneath ()) |
7313baad | 3180 | { |
f6ac5f3d PA |
3181 | int fd = t->fileio_open (inf, filename, flags, mode, |
3182 | warn_if_slow, target_errno); | |
7313baad | 3183 | |
f6ac5f3d PA |
3184 | if (fd == -1 && *target_errno == FILEIO_ENOSYS) |
3185 | continue; | |
1c4b552b | 3186 | |
f6ac5f3d PA |
3187 | if (fd < 0) |
3188 | fd = -1; | |
3189 | else | |
3190 | fd = acquire_fileio_fd (t, fd); | |
3191 | ||
3192 | if (targetdebug) | |
3193 | fprintf_unfiltered (gdb_stdlog, | |
4313b8c0 | 3194 | "target_fileio_open (%d,%s,0x%x,0%o,%d)" |
07c138c8 GB |
3195 | " = %d (%d)\n", |
3196 | inf == NULL ? 0 : inf->num, | |
7313baad | 3197 | filename, flags, mode, |
4313b8c0 GB |
3198 | warn_if_slow, fd, |
3199 | fd != -1 ? 0 : *target_errno); | |
f6ac5f3d | 3200 | return fd; |
7313baad UW |
3201 | } |
3202 | ||
3203 | *target_errno = FILEIO_ENOSYS; | |
3204 | return -1; | |
3205 | } | |
3206 | ||
12e2a5fd GB |
3207 | /* See target.h. */ |
3208 | ||
7313baad UW |
3209 | int |
3210 | target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
3211 | ULONGEST offset, int *target_errno) | |
3212 | { | |
1c4b552b GB |
3213 | fileio_fh_t *fh = fileio_fd_to_fh (fd); |
3214 | int ret = -1; | |
7313baad | 3215 | |
5ff79300 | 3216 | if (fh->is_closed ()) |
1c4b552b | 3217 | *target_errno = EBADF; |
20db9c52 PA |
3218 | else if (fh->target == NULL) |
3219 | *target_errno = EIO; | |
1c4b552b | 3220 | else |
f6ac5f3d PA |
3221 | ret = fh->target->fileio_pwrite (fh->target_fd, write_buf, |
3222 | len, offset, target_errno); | |
7313baad | 3223 | |
1c4b552b GB |
3224 | if (targetdebug) |
3225 | fprintf_unfiltered (gdb_stdlog, | |
3226 | "target_fileio_pwrite (%d,...,%d,%s) " | |
3227 | "= %d (%d)\n", | |
3228 | fd, len, pulongest (offset), | |
3229 | ret, ret != -1 ? 0 : *target_errno); | |
3230 | return ret; | |
7313baad UW |
3231 | } |
3232 | ||
12e2a5fd GB |
3233 | /* See target.h. */ |
3234 | ||
7313baad UW |
3235 | int |
3236 | target_fileio_pread (int fd, gdb_byte *read_buf, int len, | |
3237 | ULONGEST offset, int *target_errno) | |
3238 | { | |
1c4b552b GB |
3239 | fileio_fh_t *fh = fileio_fd_to_fh (fd); |
3240 | int ret = -1; | |
7313baad | 3241 | |
5ff79300 | 3242 | if (fh->is_closed ()) |
1c4b552b | 3243 | *target_errno = EBADF; |
20db9c52 PA |
3244 | else if (fh->target == NULL) |
3245 | *target_errno = EIO; | |
1c4b552b | 3246 | else |
f6ac5f3d PA |
3247 | ret = fh->target->fileio_pread (fh->target_fd, read_buf, |
3248 | len, offset, target_errno); | |
7313baad | 3249 | |
1c4b552b GB |
3250 | if (targetdebug) |
3251 | fprintf_unfiltered (gdb_stdlog, | |
3252 | "target_fileio_pread (%d,...,%d,%s) " | |
3253 | "= %d (%d)\n", | |
3254 | fd, len, pulongest (offset), | |
3255 | ret, ret != -1 ? 0 : *target_errno); | |
9b15c1f0 GB |
3256 | return ret; |
3257 | } | |
3258 | ||
3259 | /* See target.h. */ | |
12e2a5fd | 3260 | |
9b15c1f0 GB |
3261 | int |
3262 | target_fileio_fstat (int fd, struct stat *sb, int *target_errno) | |
3263 | { | |
3264 | fileio_fh_t *fh = fileio_fd_to_fh (fd); | |
3265 | int ret = -1; | |
3266 | ||
5ff79300 | 3267 | if (fh->is_closed ()) |
9b15c1f0 | 3268 | *target_errno = EBADF; |
20db9c52 PA |
3269 | else if (fh->target == NULL) |
3270 | *target_errno = EIO; | |
9b15c1f0 | 3271 | else |
f6ac5f3d | 3272 | ret = fh->target->fileio_fstat (fh->target_fd, sb, target_errno); |
9b15c1f0 GB |
3273 | |
3274 | if (targetdebug) | |
3275 | fprintf_unfiltered (gdb_stdlog, | |
3276 | "target_fileio_fstat (%d) = %d (%d)\n", | |
3277 | fd, ret, ret != -1 ? 0 : *target_errno); | |
1c4b552b | 3278 | return ret; |
7313baad UW |
3279 | } |
3280 | ||
12e2a5fd GB |
3281 | /* See target.h. */ |
3282 | ||
7313baad UW |
3283 | int |
3284 | target_fileio_close (int fd, int *target_errno) | |
3285 | { | |
1c4b552b GB |
3286 | fileio_fh_t *fh = fileio_fd_to_fh (fd); |
3287 | int ret = -1; | |
7313baad | 3288 | |
5ff79300 | 3289 | if (fh->is_closed ()) |
1c4b552b GB |
3290 | *target_errno = EBADF; |
3291 | else | |
7313baad | 3292 | { |
20db9c52 | 3293 | if (fh->target != NULL) |
f6ac5f3d PA |
3294 | ret = fh->target->fileio_close (fh->target_fd, |
3295 | target_errno); | |
20db9c52 PA |
3296 | else |
3297 | ret = 0; | |
1c4b552b | 3298 | release_fileio_fd (fd, fh); |
7313baad UW |
3299 | } |
3300 | ||
1c4b552b GB |
3301 | if (targetdebug) |
3302 | fprintf_unfiltered (gdb_stdlog, | |
3303 | "target_fileio_close (%d) = %d (%d)\n", | |
3304 | fd, ret, ret != -1 ? 0 : *target_errno); | |
3305 | return ret; | |
7313baad UW |
3306 | } |
3307 | ||
12e2a5fd GB |
3308 | /* See target.h. */ |
3309 | ||
7313baad | 3310 | int |
07c138c8 GB |
3311 | target_fileio_unlink (struct inferior *inf, const char *filename, |
3312 | int *target_errno) | |
7313baad | 3313 | { |
b6a8c27b | 3314 | for (target_ops *t = default_fileio_target (); t != NULL; t = t->beneath ()) |
7313baad | 3315 | { |
f6ac5f3d | 3316 | int ret = t->fileio_unlink (inf, filename, target_errno); |
7313baad | 3317 | |
f6ac5f3d PA |
3318 | if (ret == -1 && *target_errno == FILEIO_ENOSYS) |
3319 | continue; | |
3320 | ||
3321 | if (targetdebug) | |
3322 | fprintf_unfiltered (gdb_stdlog, | |
3323 | "target_fileio_unlink (%d,%s)" | |
3324 | " = %d (%d)\n", | |
3325 | inf == NULL ? 0 : inf->num, filename, | |
3326 | ret, ret != -1 ? 0 : *target_errno); | |
3327 | return ret; | |
7313baad UW |
3328 | } |
3329 | ||
3330 | *target_errno = FILEIO_ENOSYS; | |
3331 | return -1; | |
3332 | } | |
3333 | ||
12e2a5fd GB |
3334 | /* See target.h. */ |
3335 | ||
e0d3522b | 3336 | gdb::optional<std::string> |
07c138c8 GB |
3337 | target_fileio_readlink (struct inferior *inf, const char *filename, |
3338 | int *target_errno) | |
b9e7b9c3 | 3339 | { |
b6a8c27b | 3340 | for (target_ops *t = default_fileio_target (); t != NULL; t = t->beneath ()) |
b9e7b9c3 | 3341 | { |
f6ac5f3d PA |
3342 | gdb::optional<std::string> ret |
3343 | = t->fileio_readlink (inf, filename, target_errno); | |
b9e7b9c3 | 3344 | |
f6ac5f3d PA |
3345 | if (!ret.has_value () && *target_errno == FILEIO_ENOSYS) |
3346 | continue; | |
3347 | ||
3348 | if (targetdebug) | |
3349 | fprintf_unfiltered (gdb_stdlog, | |
3350 | "target_fileio_readlink (%d,%s)" | |
3351 | " = %s (%d)\n", | |
3352 | inf == NULL ? 0 : inf->num, | |
3353 | filename, ret ? ret->c_str () : "(nil)", | |
3354 | ret ? 0 : *target_errno); | |
3355 | return ret; | |
b9e7b9c3 UW |
3356 | } |
3357 | ||
3358 | *target_errno = FILEIO_ENOSYS; | |
e0d3522b | 3359 | return {}; |
b9e7b9c3 UW |
3360 | } |
3361 | ||
770623f7 TT |
3362 | /* Like scoped_fd, but specific to target fileio. */ |
3363 | ||
3364 | class scoped_target_fd | |
7313baad | 3365 | { |
770623f7 TT |
3366 | public: |
3367 | explicit scoped_target_fd (int fd) noexcept | |
3368 | : m_fd (fd) | |
3369 | { | |
3370 | } | |
7313baad | 3371 | |
770623f7 TT |
3372 | ~scoped_target_fd () |
3373 | { | |
3374 | if (m_fd >= 0) | |
3375 | { | |
3376 | int target_errno; | |
3377 | ||
3378 | target_fileio_close (m_fd, &target_errno); | |
3379 | } | |
3380 | } | |
3381 | ||
3382 | DISABLE_COPY_AND_ASSIGN (scoped_target_fd); | |
3383 | ||
3384 | int get () const noexcept | |
3385 | { | |
3386 | return m_fd; | |
3387 | } | |
3388 | ||
3389 | private: | |
3390 | int m_fd; | |
3391 | }; | |
7313baad | 3392 | |
07c138c8 GB |
3393 | /* Read target file FILENAME, in the filesystem as seen by INF. If |
3394 | INF is NULL, use the filesystem seen by the debugger (GDB or, for | |
3395 | remote targets, the remote stub). Store the result in *BUF_P and | |
3396 | return the size of the transferred data. PADDING additional bytes | |
3397 | are available in *BUF_P. This is a helper function for | |
3398 | target_fileio_read_alloc; see the declaration of that function for | |
3399 | more information. */ | |
7313baad | 3400 | |
f7af1fcd JK |
3401 | static LONGEST |
3402 | target_fileio_read_alloc_1 (struct inferior *inf, const char *filename, | |
3403 | gdb_byte **buf_p, int padding) | |
3404 | { | |
db1ff28b JK |
3405 | size_t buf_alloc, buf_pos; |
3406 | gdb_byte *buf; | |
3407 | LONGEST n; | |
db1ff28b | 3408 | int target_errno; |
f7af1fcd | 3409 | |
770623f7 | 3410 | scoped_target_fd fd (target_fileio_open (inf, filename, FILEIO_O_RDONLY, |
4111f652 | 3411 | 0700, false, &target_errno)); |
770623f7 | 3412 | if (fd.get () == -1) |
f7af1fcd JK |
3413 | return -1; |
3414 | ||
db1ff28b JK |
3415 | /* Start by reading up to 4K at a time. The target will throttle |
3416 | this number down if necessary. */ | |
3417 | buf_alloc = 4096; | |
224c3ddb | 3418 | buf = (gdb_byte *) xmalloc (buf_alloc); |
db1ff28b JK |
3419 | buf_pos = 0; |
3420 | while (1) | |
3421 | { | |
770623f7 | 3422 | n = target_fileio_pread (fd.get (), &buf[buf_pos], |
db1ff28b JK |
3423 | buf_alloc - buf_pos - padding, buf_pos, |
3424 | &target_errno); | |
3425 | if (n < 0) | |
3426 | { | |
3427 | /* An error occurred. */ | |
db1ff28b JK |
3428 | xfree (buf); |
3429 | return -1; | |
3430 | } | |
3431 | else if (n == 0) | |
3432 | { | |
3433 | /* Read all there was. */ | |
db1ff28b JK |
3434 | if (buf_pos == 0) |
3435 | xfree (buf); | |
3436 | else | |
3437 | *buf_p = buf; | |
3438 | return buf_pos; | |
3439 | } | |
3440 | ||
3441 | buf_pos += n; | |
3442 | ||
3443 | /* If the buffer is filling up, expand it. */ | |
3444 | if (buf_alloc < buf_pos * 2) | |
3445 | { | |
3446 | buf_alloc *= 2; | |
224c3ddb | 3447 | buf = (gdb_byte *) xrealloc (buf, buf_alloc); |
db1ff28b JK |
3448 | } |
3449 | ||
3450 | QUIT; | |
3451 | } | |
f7af1fcd JK |
3452 | } |
3453 | ||
12e2a5fd | 3454 | /* See target.h. */ |
7313baad UW |
3455 | |
3456 | LONGEST | |
07c138c8 GB |
3457 | target_fileio_read_alloc (struct inferior *inf, const char *filename, |
3458 | gdb_byte **buf_p) | |
7313baad | 3459 | { |
07c138c8 | 3460 | return target_fileio_read_alloc_1 (inf, filename, buf_p, 0); |
7313baad UW |
3461 | } |
3462 | ||
db1ff28b | 3463 | /* See target.h. */ |
f7af1fcd | 3464 | |
87028b87 | 3465 | gdb::unique_xmalloc_ptr<char> |
f7af1fcd JK |
3466 | target_fileio_read_stralloc (struct inferior *inf, const char *filename) |
3467 | { | |
db1ff28b JK |
3468 | gdb_byte *buffer; |
3469 | char *bufstr; | |
3470 | LONGEST i, transferred; | |
3471 | ||
3472 | transferred = target_fileio_read_alloc_1 (inf, filename, &buffer, 1); | |
3473 | bufstr = (char *) buffer; | |
3474 | ||
3475 | if (transferred < 0) | |
87028b87 | 3476 | return gdb::unique_xmalloc_ptr<char> (nullptr); |
db1ff28b JK |
3477 | |
3478 | if (transferred == 0) | |
b02f78f9 | 3479 | return make_unique_xstrdup (""); |
db1ff28b JK |
3480 | |
3481 | bufstr[transferred] = 0; | |
3482 | ||
3483 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
3484 | for (i = strlen (bufstr); i < transferred; i++) | |
3485 | if (bufstr[i] != 0) | |
3486 | { | |
3487 | warning (_("target file %s " | |
3488 | "contained unexpected null characters"), | |
3489 | filename); | |
3490 | break; | |
3491 | } | |
3492 | ||
87028b87 | 3493 | return gdb::unique_xmalloc_ptr<char> (bufstr); |
f7af1fcd | 3494 | } |
7313baad | 3495 | |
db1ff28b | 3496 | |
e0d24f8d | 3497 | static int |
31568a15 TT |
3498 | default_region_ok_for_hw_watchpoint (struct target_ops *self, |
3499 | CORE_ADDR addr, int len) | |
e0d24f8d | 3500 | { |
f5656ead | 3501 | return (len <= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT); |
ccaa32c7 GS |
3502 | } |
3503 | ||
5009afc5 AS |
3504 | static int |
3505 | default_watchpoint_addr_within_range (struct target_ops *target, | |
3506 | CORE_ADDR addr, | |
3507 | CORE_ADDR start, int length) | |
3508 | { | |
3509 | return addr >= start && addr < start + length; | |
3510 | } | |
3511 | ||
8b06beed TT |
3512 | /* See target.h. */ |
3513 | ||
a1740ee1 PA |
3514 | target_ops * |
3515 | target_stack::find_beneath (const target_ops *t) const | |
8b06beed | 3516 | { |
a1740ee1 | 3517 | /* Look for a non-empty slot at stratum levels beneath T's. */ |
66b4deae | 3518 | for (int stratum = t->stratum () - 1; stratum >= 0; --stratum) |
a1740ee1 PA |
3519 | if (m_stack[stratum] != NULL) |
3520 | return m_stack[stratum]; | |
8b06beed TT |
3521 | |
3522 | return NULL; | |
3523 | } | |
3524 | ||
a1740ee1 PA |
3525 | /* See target.h. */ |
3526 | ||
3527 | struct target_ops * | |
3528 | find_target_at (enum strata stratum) | |
3529 | { | |
5b6d1e4f | 3530 | return current_inferior ()->target_at (stratum); |
a1740ee1 PA |
3531 | } |
3532 | ||
c906108c | 3533 | \f |
0f48b757 PA |
3534 | |
3535 | /* See target.h */ | |
3536 | ||
3537 | void | |
3538 | target_announce_detach (int from_tty) | |
3539 | { | |
3540 | pid_t pid; | |
a121b7c1 | 3541 | const char *exec_file; |
0f48b757 PA |
3542 | |
3543 | if (!from_tty) | |
3544 | return; | |
3545 | ||
3546 | exec_file = get_exec_file (0); | |
3547 | if (exec_file == NULL) | |
3548 | exec_file = ""; | |
3549 | ||
e99b03dc | 3550 | pid = inferior_ptid.pid (); |
0f48b757 | 3551 | printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file, |
a068643d | 3552 | target_pid_to_str (ptid_t (pid)).c_str ()); |
0f48b757 PA |
3553 | } |
3554 | ||
c906108c SS |
3555 | /* The inferior process has died. Long live the inferior! */ |
3556 | ||
3557 | void | |
fba45db2 | 3558 | generic_mourn_inferior (void) |
c906108c | 3559 | { |
00431a78 | 3560 | inferior *inf = current_inferior (); |
c906108c | 3561 | |
a0776b13 | 3562 | switch_to_no_thread (); |
7f9f62ba | 3563 | |
f59f708a PA |
3564 | /* Mark breakpoints uninserted in case something tries to delete a |
3565 | breakpoint while we delete the inferior's threads (which would | |
3566 | fail, since the inferior is long gone). */ | |
3567 | mark_breakpoints_out (); | |
3568 | ||
00431a78 PA |
3569 | if (inf->pid != 0) |
3570 | exit_inferior (inf); | |
7f9f62ba | 3571 | |
f59f708a PA |
3572 | /* Note this wipes step-resume breakpoints, so needs to be done |
3573 | after exit_inferior, which ends up referencing the step-resume | |
3574 | breakpoints through clear_thread_inferior_resources. */ | |
c906108c | 3575 | breakpoint_init_inferior (inf_exited); |
f59f708a | 3576 | |
c906108c SS |
3577 | registers_changed (); |
3578 | ||
c906108c SS |
3579 | reopen_exec_file (); |
3580 | reinit_frame_cache (); | |
3581 | ||
9a4105ab AC |
3582 | if (deprecated_detach_hook) |
3583 | deprecated_detach_hook (); | |
c906108c SS |
3584 | } |
3585 | \f | |
fd0a2a6f MK |
3586 | /* Convert a normal process ID to a string. Returns the string in a |
3587 | static buffer. */ | |
c906108c | 3588 | |
a068643d | 3589 | std::string |
39f77062 | 3590 | normal_pid_to_str (ptid_t ptid) |
c906108c | 3591 | { |
a068643d | 3592 | return string_printf ("process %d", ptid.pid ()); |
c906108c SS |
3593 | } |
3594 | ||
a068643d | 3595 | static std::string |
770234d3 | 3596 | default_pid_to_str (struct target_ops *ops, ptid_t ptid) |
117de6a9 PA |
3597 | { |
3598 | return normal_pid_to_str (ptid); | |
3599 | } | |
3600 | ||
9b4eba8e HZ |
3601 | /* Error-catcher for target_find_memory_regions. */ |
3602 | static int | |
2e73927c TT |
3603 | dummy_find_memory_regions (struct target_ops *self, |
3604 | find_memory_region_ftype ignore1, void *ignore2) | |
be4d1333 | 3605 | { |
9b4eba8e | 3606 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3607 | return 0; |
3608 | } | |
3609 | ||
9b4eba8e | 3610 | /* Error-catcher for target_make_corefile_notes. */ |
24f5300a | 3611 | static gdb::unique_xmalloc_ptr<char> |
fc6691b2 TT |
3612 | dummy_make_corefile_notes (struct target_ops *self, |
3613 | bfd *ignore1, int *ignore2) | |
be4d1333 | 3614 | { |
9b4eba8e | 3615 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3616 | return NULL; |
3617 | } | |
3618 | ||
f6ac5f3d PA |
3619 | #include "target-delegates.c" |
3620 | ||
06b5b831 TT |
3621 | /* The initial current target, so that there is always a semi-valid |
3622 | current target. */ | |
3623 | ||
3624 | static dummy_target the_dummy_target; | |
c906108c | 3625 | |
5b6d1e4f PA |
3626 | /* See target.h. */ |
3627 | ||
3628 | target_ops * | |
3629 | get_dummy_target () | |
3630 | { | |
3631 | return &the_dummy_target; | |
3632 | } | |
3633 | ||
d9f719f1 PA |
3634 | static const target_info dummy_target_info = { |
3635 | "None", | |
3636 | N_("None"), | |
3637 | "" | |
3638 | }; | |
3639 | ||
66b4deae PA |
3640 | strata |
3641 | dummy_target::stratum () const | |
f6ac5f3d | 3642 | { |
66b4deae | 3643 | return dummy_stratum; |
f6ac5f3d PA |
3644 | } |
3645 | ||
66b4deae PA |
3646 | strata |
3647 | debug_target::stratum () const | |
f6ac5f3d | 3648 | { |
66b4deae | 3649 | return debug_stratum; |
f6ac5f3d PA |
3650 | } |
3651 | ||
d9f719f1 PA |
3652 | const target_info & |
3653 | dummy_target::info () const | |
f6ac5f3d | 3654 | { |
d9f719f1 | 3655 | return dummy_target_info; |
f6ac5f3d PA |
3656 | } |
3657 | ||
d9f719f1 PA |
3658 | const target_info & |
3659 | debug_target::info () const | |
f6ac5f3d | 3660 | { |
b6a8c27b | 3661 | return beneath ()->info (); |
f6ac5f3d PA |
3662 | } |
3663 | ||
c906108c | 3664 | \f |
c906108c | 3665 | |
f1c07ab0 | 3666 | void |
460014f5 | 3667 | target_close (struct target_ops *targ) |
f1c07ab0 | 3668 | { |
c8fbd44a | 3669 | gdb_assert (!current_inferior ()->target_is_pushed (targ)); |
7fdc1521 | 3670 | |
20db9c52 PA |
3671 | fileio_handles_invalidate_target (targ); |
3672 | ||
f6ac5f3d | 3673 | targ->close (); |
947b8855 PA |
3674 | |
3675 | if (targetdebug) | |
460014f5 | 3676 | fprintf_unfiltered (gdb_stdlog, "target_close ()\n"); |
f1c07ab0 AC |
3677 | } |
3678 | ||
28439f5e PA |
3679 | int |
3680 | target_thread_alive (ptid_t ptid) | |
c906108c | 3681 | { |
8b88a78e | 3682 | return current_top_target ()->thread_alive (ptid); |
28439f5e PA |
3683 | } |
3684 | ||
3685 | void | |
e8032dde | 3686 | target_update_thread_list (void) |
28439f5e | 3687 | { |
8b88a78e | 3688 | current_top_target ()->update_thread_list (); |
c906108c SS |
3689 | } |
3690 | ||
d914c394 SS |
3691 | void |
3692 | target_stop (ptid_t ptid) | |
3693 | { | |
3694 | if (!may_stop) | |
3695 | { | |
3696 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3697 | return; | |
3698 | } | |
3699 | ||
8b88a78e | 3700 | current_top_target ()->stop (ptid); |
d914c394 SS |
3701 | } |
3702 | ||
bfedc46a | 3703 | void |
e671cd59 | 3704 | target_interrupt () |
bfedc46a PA |
3705 | { |
3706 | if (!may_stop) | |
3707 | { | |
3708 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3709 | return; | |
3710 | } | |
3711 | ||
8b88a78e | 3712 | current_top_target ()->interrupt (); |
bfedc46a PA |
3713 | } |
3714 | ||
abc56d60 PA |
3715 | /* See target.h. */ |
3716 | ||
93692b58 PA |
3717 | void |
3718 | target_pass_ctrlc (void) | |
3719 | { | |
5b6d1e4f PA |
3720 | /* Pass the Ctrl-C to the first target that has a thread |
3721 | running. */ | |
3722 | for (inferior *inf : all_inferiors ()) | |
3723 | { | |
3724 | target_ops *proc_target = inf->process_target (); | |
3725 | if (proc_target == NULL) | |
3726 | continue; | |
3727 | ||
43667cc6 | 3728 | for (thread_info *thr : inf->non_exited_threads ()) |
5b6d1e4f PA |
3729 | { |
3730 | /* A thread can be THREAD_STOPPED and executing, while | |
3731 | running an infcall. */ | |
3732 | if (thr->state == THREAD_RUNNING || thr->executing) | |
3733 | { | |
3734 | /* We can get here quite deep in target layers. Avoid | |
3735 | switching thread context or anything that would | |
3736 | communicate with the target (e.g., to fetch | |
3737 | registers), or flushing e.g., the frame cache. We | |
3738 | just switch inferior in order to be able to call | |
3739 | through the target_stack. */ | |
3740 | scoped_restore_current_inferior restore_inferior; | |
3741 | set_current_inferior (inf); | |
3742 | current_top_target ()->pass_ctrlc (); | |
3743 | return; | |
3744 | } | |
3745 | } | |
3746 | } | |
93692b58 PA |
3747 | } |
3748 | ||
3749 | /* See target.h. */ | |
3750 | ||
3751 | void | |
3752 | default_target_pass_ctrlc (struct target_ops *ops) | |
3753 | { | |
e671cd59 | 3754 | target_interrupt (); |
93692b58 PA |
3755 | } |
3756 | ||
f8c1d06b GB |
3757 | /* See target/target.h. */ |
3758 | ||
3759 | void | |
03f4463b | 3760 | target_stop_and_wait (ptid_t ptid) |
f8c1d06b GB |
3761 | { |
3762 | struct target_waitstatus status; | |
491144b5 | 3763 | bool was_non_stop = non_stop; |
f8c1d06b | 3764 | |
491144b5 | 3765 | non_stop = true; |
f8c1d06b GB |
3766 | target_stop (ptid); |
3767 | ||
3768 | memset (&status, 0, sizeof (status)); | |
3769 | target_wait (ptid, &status, 0); | |
3770 | ||
3771 | non_stop = was_non_stop; | |
3772 | } | |
3773 | ||
3774 | /* See target/target.h. */ | |
3775 | ||
3776 | void | |
03f4463b | 3777 | target_continue_no_signal (ptid_t ptid) |
f8c1d06b GB |
3778 | { |
3779 | target_resume (ptid, 0, GDB_SIGNAL_0); | |
3780 | } | |
3781 | ||
049a8570 SDJ |
3782 | /* See target/target.h. */ |
3783 | ||
3784 | void | |
3785 | target_continue (ptid_t ptid, enum gdb_signal signal) | |
3786 | { | |
3787 | target_resume (ptid, 0, signal); | |
3788 | } | |
3789 | ||
fdbac7d8 | 3790 | /* Concatenate ELEM to LIST, a comma-separated list. */ |
09826ec5 | 3791 | |
09ce46f2 SM |
3792 | static void |
3793 | str_comma_list_concat_elem (std::string *list, const char *elem) | |
09826ec5 | 3794 | { |
09ce46f2 SM |
3795 | if (!list->empty ()) |
3796 | list->append (", "); | |
3797 | ||
3798 | list->append (elem); | |
09826ec5 PA |
3799 | } |
3800 | ||
3801 | /* Helper for target_options_to_string. If OPT is present in | |
3802 | TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET. | |
09ce46f2 | 3803 | OPT is removed from TARGET_OPTIONS. */ |
09826ec5 | 3804 | |
09ce46f2 | 3805 | static void |
b60cea74 TT |
3806 | do_option (target_wait_flags *target_options, std::string *ret, |
3807 | target_wait_flag opt, const char *opt_str) | |
09826ec5 PA |
3808 | { |
3809 | if ((*target_options & opt) != 0) | |
3810 | { | |
09ce46f2 | 3811 | str_comma_list_concat_elem (ret, opt_str); |
09826ec5 PA |
3812 | *target_options &= ~opt; |
3813 | } | |
09826ec5 PA |
3814 | } |
3815 | ||
fdbac7d8 SM |
3816 | /* See target.h. */ |
3817 | ||
09ce46f2 | 3818 | std::string |
b60cea74 | 3819 | target_options_to_string (target_wait_flags target_options) |
09826ec5 | 3820 | { |
09ce46f2 | 3821 | std::string ret; |
09826ec5 PA |
3822 | |
3823 | #define DO_TARG_OPTION(OPT) \ | |
09ce46f2 | 3824 | do_option (&target_options, &ret, OPT, #OPT) |
09826ec5 PA |
3825 | |
3826 | DO_TARG_OPTION (TARGET_WNOHANG); | |
3827 | ||
3828 | if (target_options != 0) | |
09ce46f2 | 3829 | str_comma_list_concat_elem (&ret, "unknown???"); |
09826ec5 | 3830 | |
09826ec5 PA |
3831 | return ret; |
3832 | } | |
3833 | ||
28439f5e PA |
3834 | void |
3835 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 3836 | { |
8b88a78e | 3837 | current_top_target ()->fetch_registers (regcache, regno); |
ad5989bd | 3838 | if (targetdebug) |
ef79d9a3 | 3839 | regcache->debug_print_register ("target_fetch_registers", regno); |
c906108c SS |
3840 | } |
3841 | ||
28439f5e PA |
3842 | void |
3843 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 3844 | { |
d914c394 SS |
3845 | if (!may_write_registers) |
3846 | error (_("Writing to registers is not allowed (regno %d)"), regno); | |
3847 | ||
8b88a78e | 3848 | current_top_target ()->store_registers (regcache, regno); |
6b84065d | 3849 | if (targetdebug) |
28439f5e | 3850 | { |
ef79d9a3 | 3851 | regcache->debug_print_register ("target_store_registers", regno); |
28439f5e | 3852 | } |
c906108c SS |
3853 | } |
3854 | ||
dc146f7c VP |
3855 | int |
3856 | target_core_of_thread (ptid_t ptid) | |
3857 | { | |
8b88a78e | 3858 | return current_top_target ()->core_of_thread (ptid); |
dc146f7c VP |
3859 | } |
3860 | ||
936d2992 PA |
3861 | int |
3862 | simple_verify_memory (struct target_ops *ops, | |
3863 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
3864 | { | |
3865 | LONGEST total_xfered = 0; | |
3866 | ||
3867 | while (total_xfered < size) | |
3868 | { | |
3869 | ULONGEST xfered_len; | |
3870 | enum target_xfer_status status; | |
3871 | gdb_byte buf[1024]; | |
768adc05 | 3872 | ULONGEST howmuch = std::min<ULONGEST> (sizeof (buf), size - total_xfered); |
936d2992 PA |
3873 | |
3874 | status = target_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
3875 | buf, NULL, lma + total_xfered, howmuch, | |
3876 | &xfered_len); | |
3877 | if (status == TARGET_XFER_OK | |
3878 | && memcmp (data + total_xfered, buf, xfered_len) == 0) | |
3879 | { | |
3880 | total_xfered += xfered_len; | |
3881 | QUIT; | |
3882 | } | |
3883 | else | |
3884 | return 0; | |
3885 | } | |
3886 | return 1; | |
3887 | } | |
3888 | ||
3889 | /* Default implementation of memory verification. */ | |
3890 | ||
3891 | static int | |
3892 | default_verify_memory (struct target_ops *self, | |
3893 | const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3894 | { | |
3895 | /* Start over from the top of the target stack. */ | |
8b88a78e | 3896 | return simple_verify_memory (current_top_target (), |
936d2992 PA |
3897 | data, memaddr, size); |
3898 | } | |
3899 | ||
4a5e7a5b PA |
3900 | int |
3901 | target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3902 | { | |
8b88a78e | 3903 | return current_top_target ()->verify_memory (data, memaddr, size); |
4a5e7a5b PA |
3904 | } |
3905 | ||
9c06b0b4 TJB |
3906 | /* The documentation for this function is in its prototype declaration in |
3907 | target.h. */ | |
3908 | ||
3909 | int | |
f4b0a671 SM |
3910 | target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, |
3911 | enum target_hw_bp_type rw) | |
9c06b0b4 | 3912 | { |
8b88a78e | 3913 | return current_top_target ()->insert_mask_watchpoint (addr, mask, rw); |
9c06b0b4 TJB |
3914 | } |
3915 | ||
3916 | /* The documentation for this function is in its prototype declaration in | |
3917 | target.h. */ | |
3918 | ||
3919 | int | |
f4b0a671 SM |
3920 | target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, |
3921 | enum target_hw_bp_type rw) | |
9c06b0b4 | 3922 | { |
8b88a78e | 3923 | return current_top_target ()->remove_mask_watchpoint (addr, mask, rw); |
9c06b0b4 TJB |
3924 | } |
3925 | ||
3926 | /* The documentation for this function is in its prototype declaration | |
3927 | in target.h. */ | |
3928 | ||
3929 | int | |
3930 | target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask) | |
3931 | { | |
8b88a78e | 3932 | return current_top_target ()->masked_watch_num_registers (addr, mask); |
9c06b0b4 TJB |
3933 | } |
3934 | ||
f1310107 TJB |
3935 | /* The documentation for this function is in its prototype declaration |
3936 | in target.h. */ | |
3937 | ||
3938 | int | |
3939 | target_ranged_break_num_registers (void) | |
3940 | { | |
8b88a78e | 3941 | return current_top_target ()->ranged_break_num_registers (); |
f1310107 TJB |
3942 | } |
3943 | ||
02d27625 MM |
3944 | /* See target.h. */ |
3945 | ||
02d27625 | 3946 | struct btrace_target_info * |
f4abbc16 | 3947 | target_enable_btrace (ptid_t ptid, const struct btrace_config *conf) |
02d27625 | 3948 | { |
8b88a78e | 3949 | return current_top_target ()->enable_btrace (ptid, conf); |
02d27625 MM |
3950 | } |
3951 | ||
3952 | /* See target.h. */ | |
3953 | ||
3954 | void | |
3955 | target_disable_btrace (struct btrace_target_info *btinfo) | |
3956 | { | |
8b88a78e | 3957 | current_top_target ()->disable_btrace (btinfo); |
02d27625 MM |
3958 | } |
3959 | ||
3960 | /* See target.h. */ | |
3961 | ||
3962 | void | |
3963 | target_teardown_btrace (struct btrace_target_info *btinfo) | |
3964 | { | |
8b88a78e | 3965 | current_top_target ()->teardown_btrace (btinfo); |
02d27625 MM |
3966 | } |
3967 | ||
3968 | /* See target.h. */ | |
3969 | ||
969c39fb | 3970 | enum btrace_error |
734b0e4b | 3971 | target_read_btrace (struct btrace_data *btrace, |
969c39fb | 3972 | struct btrace_target_info *btinfo, |
02d27625 MM |
3973 | enum btrace_read_type type) |
3974 | { | |
8b88a78e | 3975 | return current_top_target ()->read_btrace (btrace, btinfo, type); |
02d27625 MM |
3976 | } |
3977 | ||
d02ed0bb MM |
3978 | /* See target.h. */ |
3979 | ||
f4abbc16 MM |
3980 | const struct btrace_config * |
3981 | target_btrace_conf (const struct btrace_target_info *btinfo) | |
3982 | { | |
8b88a78e | 3983 | return current_top_target ()->btrace_conf (btinfo); |
f4abbc16 MM |
3984 | } |
3985 | ||
3986 | /* See target.h. */ | |
3987 | ||
7c1687a9 MM |
3988 | void |
3989 | target_stop_recording (void) | |
3990 | { | |
8b88a78e | 3991 | current_top_target ()->stop_recording (); |
7c1687a9 MM |
3992 | } |
3993 | ||
3994 | /* See target.h. */ | |
3995 | ||
d02ed0bb | 3996 | void |
85e1311a | 3997 | target_save_record (const char *filename) |
d02ed0bb | 3998 | { |
8b88a78e | 3999 | current_top_target ()->save_record (filename); |
d02ed0bb MM |
4000 | } |
4001 | ||
4002 | /* See target.h. */ | |
4003 | ||
4004 | int | |
f6ac5f3d | 4005 | target_supports_delete_record () |
d02ed0bb | 4006 | { |
8b88a78e | 4007 | return current_top_target ()->supports_delete_record (); |
d02ed0bb MM |
4008 | } |
4009 | ||
4010 | /* See target.h. */ | |
4011 | ||
4012 | void | |
4013 | target_delete_record (void) | |
4014 | { | |
8b88a78e | 4015 | current_top_target ()->delete_record (); |
d02ed0bb MM |
4016 | } |
4017 | ||
4018 | /* See target.h. */ | |
4019 | ||
b158a20f TW |
4020 | enum record_method |
4021 | target_record_method (ptid_t ptid) | |
4022 | { | |
8b88a78e | 4023 | return current_top_target ()->record_method (ptid); |
b158a20f TW |
4024 | } |
4025 | ||
4026 | /* See target.h. */ | |
4027 | ||
d02ed0bb | 4028 | int |
a52eab48 | 4029 | target_record_is_replaying (ptid_t ptid) |
d02ed0bb | 4030 | { |
8b88a78e | 4031 | return current_top_target ()->record_is_replaying (ptid); |
d02ed0bb MM |
4032 | } |
4033 | ||
4034 | /* See target.h. */ | |
4035 | ||
7ff27e9b MM |
4036 | int |
4037 | target_record_will_replay (ptid_t ptid, int dir) | |
4038 | { | |
8b88a78e | 4039 | return current_top_target ()->record_will_replay (ptid, dir); |
7ff27e9b MM |
4040 | } |
4041 | ||
4042 | /* See target.h. */ | |
4043 | ||
797094dd MM |
4044 | void |
4045 | target_record_stop_replaying (void) | |
4046 | { | |
8b88a78e | 4047 | current_top_target ()->record_stop_replaying (); |
797094dd MM |
4048 | } |
4049 | ||
4050 | /* See target.h. */ | |
4051 | ||
d02ed0bb MM |
4052 | void |
4053 | target_goto_record_begin (void) | |
4054 | { | |
8b88a78e | 4055 | current_top_target ()->goto_record_begin (); |
d02ed0bb MM |
4056 | } |
4057 | ||
4058 | /* See target.h. */ | |
4059 | ||
4060 | void | |
4061 | target_goto_record_end (void) | |
4062 | { | |
8b88a78e | 4063 | current_top_target ()->goto_record_end (); |
d02ed0bb MM |
4064 | } |
4065 | ||
4066 | /* See target.h. */ | |
4067 | ||
4068 | void | |
4069 | target_goto_record (ULONGEST insn) | |
4070 | { | |
8b88a78e | 4071 | current_top_target ()->goto_record (insn); |
d02ed0bb MM |
4072 | } |
4073 | ||
67c86d06 MM |
4074 | /* See target.h. */ |
4075 | ||
4076 | void | |
9a24775b | 4077 | target_insn_history (int size, gdb_disassembly_flags flags) |
67c86d06 | 4078 | { |
8b88a78e | 4079 | current_top_target ()->insn_history (size, flags); |
67c86d06 MM |
4080 | } |
4081 | ||
4082 | /* See target.h. */ | |
4083 | ||
4084 | void | |
9a24775b PA |
4085 | target_insn_history_from (ULONGEST from, int size, |
4086 | gdb_disassembly_flags flags) | |
67c86d06 | 4087 | { |
8b88a78e | 4088 | current_top_target ()->insn_history_from (from, size, flags); |
67c86d06 MM |
4089 | } |
4090 | ||
4091 | /* See target.h. */ | |
4092 | ||
4093 | void | |
9a24775b PA |
4094 | target_insn_history_range (ULONGEST begin, ULONGEST end, |
4095 | gdb_disassembly_flags flags) | |
67c86d06 | 4096 | { |
8b88a78e | 4097 | current_top_target ()->insn_history_range (begin, end, flags); |
67c86d06 MM |
4098 | } |
4099 | ||
15984c13 MM |
4100 | /* See target.h. */ |
4101 | ||
4102 | void | |
0cb7c7b0 | 4103 | target_call_history (int size, record_print_flags flags) |
15984c13 | 4104 | { |
8b88a78e | 4105 | current_top_target ()->call_history (size, flags); |
15984c13 MM |
4106 | } |
4107 | ||
4108 | /* See target.h. */ | |
4109 | ||
4110 | void | |
0cb7c7b0 | 4111 | target_call_history_from (ULONGEST begin, int size, record_print_flags flags) |
15984c13 | 4112 | { |
8b88a78e | 4113 | current_top_target ()->call_history_from (begin, size, flags); |
15984c13 MM |
4114 | } |
4115 | ||
4116 | /* See target.h. */ | |
4117 | ||
4118 | void | |
0cb7c7b0 | 4119 | target_call_history_range (ULONGEST begin, ULONGEST end, record_print_flags flags) |
15984c13 | 4120 | { |
8b88a78e | 4121 | current_top_target ()->call_history_range (begin, end, flags); |
15984c13 MM |
4122 | } |
4123 | ||
ea001bdc MM |
4124 | /* See target.h. */ |
4125 | ||
4126 | const struct frame_unwind * | |
4127 | target_get_unwinder (void) | |
4128 | { | |
8b88a78e | 4129 | return current_top_target ()->get_unwinder (); |
ea001bdc MM |
4130 | } |
4131 | ||
4132 | /* See target.h. */ | |
4133 | ||
4134 | const struct frame_unwind * | |
4135 | target_get_tailcall_unwinder (void) | |
4136 | { | |
8b88a78e | 4137 | return current_top_target ()->get_tailcall_unwinder (); |
ea001bdc MM |
4138 | } |
4139 | ||
5fff78c4 MM |
4140 | /* See target.h. */ |
4141 | ||
4142 | void | |
4143 | target_prepare_to_generate_core (void) | |
4144 | { | |
8b88a78e | 4145 | current_top_target ()->prepare_to_generate_core (); |
5fff78c4 MM |
4146 | } |
4147 | ||
4148 | /* See target.h. */ | |
4149 | ||
4150 | void | |
4151 | target_done_generating_core (void) | |
4152 | { | |
8b88a78e | 4153 | current_top_target ()->done_generating_core (); |
5fff78c4 MM |
4154 | } |
4155 | ||
c906108c | 4156 | \f |
c5aa993b JM |
4157 | |
4158 | static char targ_desc[] = | |
3e43a32a MS |
4159 | "Names of targets and files being debugged.\nShows the entire \ |
4160 | stack of targets currently in use (including the exec-file,\n\ | |
c906108c SS |
4161 | core-file, and process, if any), as well as the symbol file name."; |
4162 | ||
a53f3625 | 4163 | static void |
a30bf1f1 TT |
4164 | default_rcmd (struct target_ops *self, const char *command, |
4165 | struct ui_file *output) | |
a53f3625 TT |
4166 | { |
4167 | error (_("\"monitor\" command not supported by this target.")); | |
4168 | } | |
4169 | ||
96baa820 | 4170 | static void |
0b39b52e | 4171 | do_monitor_command (const char *cmd, int from_tty) |
96baa820 | 4172 | { |
96baa820 JM |
4173 | target_rcmd (cmd, gdb_stdtarg); |
4174 | } | |
4175 | ||
78cbbba8 LM |
4176 | /* Erases all the memory regions marked as flash. CMD and FROM_TTY are |
4177 | ignored. */ | |
4178 | ||
4179 | void | |
0b39b52e | 4180 | flash_erase_command (const char *cmd, int from_tty) |
78cbbba8 LM |
4181 | { |
4182 | /* Used to communicate termination of flash operations to the target. */ | |
4183 | bool found_flash_region = false; | |
78cbbba8 LM |
4184 | struct gdbarch *gdbarch = target_gdbarch (); |
4185 | ||
a664f67e | 4186 | std::vector<mem_region> mem_regions = target_memory_map (); |
78cbbba8 LM |
4187 | |
4188 | /* Iterate over all memory regions. */ | |
a664f67e | 4189 | for (const mem_region &m : mem_regions) |
78cbbba8 | 4190 | { |
78cbbba8 | 4191 | /* Is this a flash memory region? */ |
a664f67e | 4192 | if (m.attrib.mode == MEM_FLASH) |
dda83cd7 SM |
4193 | { |
4194 | found_flash_region = true; | |
4195 | target_flash_erase (m.lo, m.hi - m.lo); | |
78cbbba8 | 4196 | |
76f9c9cf | 4197 | ui_out_emit_tuple tuple_emitter (current_uiout, "erased-regions"); |
78cbbba8 | 4198 | |
dda83cd7 SM |
4199 | current_uiout->message (_("Erasing flash memory region at address ")); |
4200 | current_uiout->field_core_addr ("address", gdbarch, m.lo); | |
4201 | current_uiout->message (", size = "); | |
4202 | current_uiout->field_string ("size", hex_string (m.hi - m.lo)); | |
4203 | current_uiout->message ("\n"); | |
4204 | } | |
78cbbba8 LM |
4205 | } |
4206 | ||
4207 | /* Did we do any flash operations? If so, we need to finalize them. */ | |
4208 | if (found_flash_region) | |
4209 | target_flash_done (); | |
4210 | else | |
4211 | current_uiout->message (_("No flash memory regions found.\n")); | |
4212 | } | |
4213 | ||
87680a14 JB |
4214 | /* Print the name of each layers of our target stack. */ |
4215 | ||
4216 | static void | |
d3cb6b99 | 4217 | maintenance_print_target_stack (const char *cmd, int from_tty) |
87680a14 | 4218 | { |
87680a14 JB |
4219 | printf_filtered (_("The current target stack is:\n")); |
4220 | ||
b6a8c27b | 4221 | for (target_ops *t = current_top_target (); t != NULL; t = t->beneath ()) |
87680a14 | 4222 | { |
66b4deae | 4223 | if (t->stratum () == debug_stratum) |
f6ac5f3d PA |
4224 | continue; |
4225 | printf_filtered (" - %s (%s)\n", t->shortname (), t->longname ()); | |
87680a14 JB |
4226 | } |
4227 | } | |
4228 | ||
372316f1 PA |
4229 | /* See target.h. */ |
4230 | ||
4231 | void | |
4232 | target_async (int enable) | |
4233 | { | |
4234 | infrun_async (enable); | |
8b88a78e | 4235 | current_top_target ()->async (enable); |
372316f1 PA |
4236 | } |
4237 | ||
65706a29 PA |
4238 | /* See target.h. */ |
4239 | ||
4240 | void | |
4241 | target_thread_events (int enable) | |
4242 | { | |
8b88a78e | 4243 | current_top_target ()->thread_events (enable); |
65706a29 PA |
4244 | } |
4245 | ||
329ea579 PA |
4246 | /* Controls if targets can report that they can/are async. This is |
4247 | just for maintainers to use when debugging gdb. */ | |
491144b5 | 4248 | bool target_async_permitted = true; |
c6ebd6cf VP |
4249 | |
4250 | /* The set command writes to this variable. If the inferior is | |
b5419e49 | 4251 | executing, target_async_permitted is *not* updated. */ |
491144b5 | 4252 | static bool target_async_permitted_1 = true; |
c6ebd6cf VP |
4253 | |
4254 | static void | |
eb4c3f4a | 4255 | maint_set_target_async_command (const char *args, int from_tty, |
329ea579 | 4256 | struct cmd_list_element *c) |
c6ebd6cf | 4257 | { |
c35b1492 | 4258 | if (have_live_inferiors ()) |
c6ebd6cf VP |
4259 | { |
4260 | target_async_permitted_1 = target_async_permitted; | |
4261 | error (_("Cannot change this setting while the inferior is running.")); | |
4262 | } | |
4263 | ||
4264 | target_async_permitted = target_async_permitted_1; | |
4265 | } | |
4266 | ||
4267 | static void | |
329ea579 PA |
4268 | maint_show_target_async_command (struct ui_file *file, int from_tty, |
4269 | struct cmd_list_element *c, | |
4270 | const char *value) | |
c6ebd6cf | 4271 | { |
3e43a32a MS |
4272 | fprintf_filtered (file, |
4273 | _("Controlling the inferior in " | |
4274 | "asynchronous mode is %s.\n"), value); | |
c6ebd6cf VP |
4275 | } |
4276 | ||
fbea99ea PA |
4277 | /* Return true if the target operates in non-stop mode even with "set |
4278 | non-stop off". */ | |
4279 | ||
4280 | static int | |
4281 | target_always_non_stop_p (void) | |
4282 | { | |
8b88a78e | 4283 | return current_top_target ()->always_non_stop_p (); |
fbea99ea PA |
4284 | } |
4285 | ||
4286 | /* See target.h. */ | |
4287 | ||
6ff267e1 SM |
4288 | bool |
4289 | target_is_non_stop_p () | |
fbea99ea PA |
4290 | { |
4291 | return (non_stop | |
4292 | || target_non_stop_enabled == AUTO_BOOLEAN_TRUE | |
4293 | || (target_non_stop_enabled == AUTO_BOOLEAN_AUTO | |
4294 | && target_always_non_stop_p ())); | |
4295 | } | |
4296 | ||
a0714d30 TBA |
4297 | /* See target.h. */ |
4298 | ||
4299 | bool | |
4300 | exists_non_stop_target () | |
4301 | { | |
4302 | if (target_is_non_stop_p ()) | |
4303 | return true; | |
4304 | ||
4305 | scoped_restore_current_thread restore_thread; | |
4306 | ||
4307 | for (inferior *inf : all_inferiors ()) | |
4308 | { | |
4309 | switch_to_inferior_no_thread (inf); | |
4310 | if (target_is_non_stop_p ()) | |
4311 | return true; | |
4312 | } | |
4313 | ||
4314 | return false; | |
4315 | } | |
4316 | ||
fbea99ea PA |
4317 | /* Controls if targets can report that they always run in non-stop |
4318 | mode. This is just for maintainers to use when debugging gdb. */ | |
4319 | enum auto_boolean target_non_stop_enabled = AUTO_BOOLEAN_AUTO; | |
4320 | ||
4321 | /* The set command writes to this variable. If the inferior is | |
4322 | executing, target_non_stop_enabled is *not* updated. */ | |
4323 | static enum auto_boolean target_non_stop_enabled_1 = AUTO_BOOLEAN_AUTO; | |
4324 | ||
4325 | /* Implementation of "maint set target-non-stop". */ | |
4326 | ||
4327 | static void | |
eb4c3f4a | 4328 | maint_set_target_non_stop_command (const char *args, int from_tty, |
fbea99ea PA |
4329 | struct cmd_list_element *c) |
4330 | { | |
4331 | if (have_live_inferiors ()) | |
4332 | { | |
4333 | target_non_stop_enabled_1 = target_non_stop_enabled; | |
4334 | error (_("Cannot change this setting while the inferior is running.")); | |
4335 | } | |
4336 | ||
4337 | target_non_stop_enabled = target_non_stop_enabled_1; | |
4338 | } | |
4339 | ||
4340 | /* Implementation of "maint show target-non-stop". */ | |
4341 | ||
4342 | static void | |
4343 | maint_show_target_non_stop_command (struct ui_file *file, int from_tty, | |
4344 | struct cmd_list_element *c, | |
4345 | const char *value) | |
4346 | { | |
4347 | if (target_non_stop_enabled == AUTO_BOOLEAN_AUTO) | |
4348 | fprintf_filtered (file, | |
4349 | _("Whether the target is always in non-stop mode " | |
4350 | "is %s (currently %s).\n"), value, | |
4351 | target_always_non_stop_p () ? "on" : "off"); | |
4352 | else | |
4353 | fprintf_filtered (file, | |
4354 | _("Whether the target is always in non-stop mode " | |
4355 | "is %s.\n"), value); | |
4356 | } | |
4357 | ||
d914c394 SS |
4358 | /* Temporary copies of permission settings. */ |
4359 | ||
491144b5 CB |
4360 | static bool may_write_registers_1 = true; |
4361 | static bool may_write_memory_1 = true; | |
4362 | static bool may_insert_breakpoints_1 = true; | |
4363 | static bool may_insert_tracepoints_1 = true; | |
4364 | static bool may_insert_fast_tracepoints_1 = true; | |
4365 | static bool may_stop_1 = true; | |
d914c394 SS |
4366 | |
4367 | /* Make the user-set values match the real values again. */ | |
4368 | ||
4369 | void | |
4370 | update_target_permissions (void) | |
4371 | { | |
4372 | may_write_registers_1 = may_write_registers; | |
4373 | may_write_memory_1 = may_write_memory; | |
4374 | may_insert_breakpoints_1 = may_insert_breakpoints; | |
4375 | may_insert_tracepoints_1 = may_insert_tracepoints; | |
4376 | may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints; | |
4377 | may_stop_1 = may_stop; | |
4378 | } | |
4379 | ||
4380 | /* The one function handles (most of) the permission flags in the same | |
4381 | way. */ | |
4382 | ||
4383 | static void | |
eb4c3f4a | 4384 | set_target_permissions (const char *args, int from_tty, |
d914c394 SS |
4385 | struct cmd_list_element *c) |
4386 | { | |
55f6301a | 4387 | if (target_has_execution ()) |
d914c394 SS |
4388 | { |
4389 | update_target_permissions (); | |
4390 | error (_("Cannot change this setting while the inferior is running.")); | |
4391 | } | |
4392 | ||
4393 | /* Make the real values match the user-changed values. */ | |
4394 | may_write_registers = may_write_registers_1; | |
4395 | may_insert_breakpoints = may_insert_breakpoints_1; | |
4396 | may_insert_tracepoints = may_insert_tracepoints_1; | |
4397 | may_insert_fast_tracepoints = may_insert_fast_tracepoints_1; | |
4398 | may_stop = may_stop_1; | |
4399 | update_observer_mode (); | |
4400 | } | |
4401 | ||
4402 | /* Set memory write permission independently of observer mode. */ | |
4403 | ||
4404 | static void | |
eb4c3f4a | 4405 | set_write_memory_permission (const char *args, int from_tty, |
d914c394 SS |
4406 | struct cmd_list_element *c) |
4407 | { | |
4408 | /* Make the real values match the user-changed values. */ | |
4409 | may_write_memory = may_write_memory_1; | |
4410 | update_observer_mode (); | |
4411 | } | |
4412 | ||
6c265988 SM |
4413 | void _initialize_target (); |
4414 | ||
c906108c | 4415 | void |
5b6d1e4f | 4416 | _initialize_target () |
c906108c | 4417 | { |
f6ac5f3d | 4418 | the_debug_target = new debug_target (); |
c906108c | 4419 | |
11db9430 SM |
4420 | add_info ("target", info_target_command, targ_desc); |
4421 | add_info ("files", info_target_command, targ_desc); | |
c906108c | 4422 | |
ccce17b0 | 4423 | add_setshow_zuinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
85c07804 AC |
4424 | Set target debugging."), _("\ |
4425 | Show target debugging."), _("\ | |
333dabeb | 4426 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
3cecbbbe TT |
4427 | verbose."), |
4428 | set_targetdebug, | |
ccce17b0 YQ |
4429 | show_targetdebug, |
4430 | &setdebuglist, &showdebuglist); | |
3a11626d | 4431 | |
2bc416ba | 4432 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
4433 | &trust_readonly, _("\ |
4434 | Set mode for reading from readonly sections."), _("\ | |
4435 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
4436 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
4437 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 4438 | result in significant performance improvement for remote targets."), |
2c5b56ce | 4439 | NULL, |
920d2a44 | 4440 | show_trust_readonly, |
e707bbc2 | 4441 | &setlist, &showlist); |
96baa820 JM |
4442 | |
4443 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 4444 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 4445 | |
87680a14 | 4446 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
dda83cd7 SM |
4447 | _("Print the name of each layer of the internal target stack."), |
4448 | &maintenanceprintlist); | |
87680a14 | 4449 | |
c6ebd6cf VP |
4450 | add_setshow_boolean_cmd ("target-async", no_class, |
4451 | &target_async_permitted_1, _("\ | |
4452 | Set whether gdb controls the inferior in asynchronous mode."), _("\ | |
4453 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
4454 | Tells gdb whether to control the inferior in asynchronous mode."), | |
329ea579 PA |
4455 | maint_set_target_async_command, |
4456 | maint_show_target_async_command, | |
4457 | &maintenance_set_cmdlist, | |
4458 | &maintenance_show_cmdlist); | |
c6ebd6cf | 4459 | |
fbea99ea PA |
4460 | add_setshow_auto_boolean_cmd ("target-non-stop", no_class, |
4461 | &target_non_stop_enabled_1, _("\ | |
4462 | Set whether gdb always controls the inferior in non-stop mode."), _("\ | |
4463 | Show whether gdb always controls the inferior in non-stop mode."), _("\ | |
4464 | Tells gdb whether to control the inferior in non-stop mode."), | |
4465 | maint_set_target_non_stop_command, | |
4466 | maint_show_target_non_stop_command, | |
4467 | &maintenance_set_cmdlist, | |
4468 | &maintenance_show_cmdlist); | |
4469 | ||
d914c394 SS |
4470 | add_setshow_boolean_cmd ("may-write-registers", class_support, |
4471 | &may_write_registers_1, _("\ | |
4472 | Set permission to write into registers."), _("\ | |
4473 | Show permission to write into registers."), _("\ | |
4474 | When this permission is on, GDB may write into the target's registers.\n\ | |
4475 | Otherwise, any sort of write attempt will result in an error."), | |
4476 | set_target_permissions, NULL, | |
4477 | &setlist, &showlist); | |
4478 | ||
4479 | add_setshow_boolean_cmd ("may-write-memory", class_support, | |
4480 | &may_write_memory_1, _("\ | |
4481 | Set permission to write into target memory."), _("\ | |
4482 | Show permission to write into target memory."), _("\ | |
4483 | When this permission is on, GDB may write into the target's memory.\n\ | |
4484 | Otherwise, any sort of write attempt will result in an error."), | |
4485 | set_write_memory_permission, NULL, | |
4486 | &setlist, &showlist); | |
4487 | ||
4488 | add_setshow_boolean_cmd ("may-insert-breakpoints", class_support, | |
4489 | &may_insert_breakpoints_1, _("\ | |
4490 | Set permission to insert breakpoints in the target."), _("\ | |
4491 | Show permission to insert breakpoints in the target."), _("\ | |
4492 | When this permission is on, GDB may insert breakpoints in the program.\n\ | |
4493 | Otherwise, any sort of insertion attempt will result in an error."), | |
4494 | set_target_permissions, NULL, | |
4495 | &setlist, &showlist); | |
4496 | ||
4497 | add_setshow_boolean_cmd ("may-insert-tracepoints", class_support, | |
4498 | &may_insert_tracepoints_1, _("\ | |
4499 | Set permission to insert tracepoints in the target."), _("\ | |
4500 | Show permission to insert tracepoints in the target."), _("\ | |
4501 | When this permission is on, GDB may insert tracepoints in the program.\n\ | |
4502 | Otherwise, any sort of insertion attempt will result in an error."), | |
4503 | set_target_permissions, NULL, | |
4504 | &setlist, &showlist); | |
4505 | ||
4506 | add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support, | |
4507 | &may_insert_fast_tracepoints_1, _("\ | |
4508 | Set permission to insert fast tracepoints in the target."), _("\ | |
4509 | Show permission to insert fast tracepoints in the target."), _("\ | |
4510 | When this permission is on, GDB may insert fast tracepoints.\n\ | |
4511 | Otherwise, any sort of insertion attempt will result in an error."), | |
4512 | set_target_permissions, NULL, | |
4513 | &setlist, &showlist); | |
4514 | ||
4515 | add_setshow_boolean_cmd ("may-interrupt", class_support, | |
4516 | &may_stop_1, _("\ | |
4517 | Set permission to interrupt or signal the target."), _("\ | |
4518 | Show permission to interrupt or signal the target."), _("\ | |
4519 | When this permission is on, GDB may interrupt/stop the target's execution.\n\ | |
4520 | Otherwise, any attempt to interrupt or stop will be ignored."), | |
4521 | set_target_permissions, NULL, | |
4522 | &setlist, &showlist); | |
6a3cb8e8 | 4523 | |
78cbbba8 | 4524 | add_com ("flash-erase", no_class, flash_erase_command, |
dda83cd7 | 4525 | _("Erase all flash memory regions.")); |
78cbbba8 | 4526 | |
6a3cb8e8 PA |
4527 | add_setshow_boolean_cmd ("auto-connect-native-target", class_support, |
4528 | &auto_connect_native_target, _("\ | |
4529 | Set whether GDB may automatically connect to the native target."), _("\ | |
4530 | Show whether GDB may automatically connect to the native target."), _("\ | |
4531 | When on, and GDB is not connected to a target yet, GDB\n\ | |
4532 | attempts \"run\" and other commands with the native target."), | |
4533 | NULL, show_auto_connect_native_target, | |
4534 | &setlist, &showlist); | |
c906108c | 4535 | } |