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c906108c | 1 | /* Select target systems and architectures at runtime for GDB. |
7998dfc3 | 2 | |
213516ef | 3 | Copyright (C) 1990-2023 Free Software Foundation, Inc. |
7998dfc3 | 4 | |
c906108c SS |
5 | Contributed by Cygnus Support. |
6 | ||
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
c906108c | 23 | #include "target.h" |
68c765e2 | 24 | #include "target-dcache.h" |
c906108c SS |
25 | #include "gdbcmd.h" |
26 | #include "symtab.h" | |
27 | #include "inferior.h" | |
45741a9c | 28 | #include "infrun.h" |
fb85cece | 29 | #include "observable.h" |
c906108c SS |
30 | #include "bfd.h" |
31 | #include "symfile.h" | |
32 | #include "objfiles.h" | |
4930751a | 33 | #include "dcache.h" |
c906108c | 34 | #include <signal.h> |
4e052eda | 35 | #include "regcache.h" |
b6591e8b | 36 | #include "gdbcore.h" |
424163ea | 37 | #include "target-descriptions.h" |
e1ac3328 | 38 | #include "gdbthread.h" |
b9db4ced | 39 | #include "solib.h" |
07b82ea5 | 40 | #include "exec.h" |
edb3359d | 41 | #include "inline-frame.h" |
2f4d8875 | 42 | #include "tracepoint.h" |
198f946f | 43 | #include "gdbsupport/fileio.h" |
268a13a5 | 44 | #include "gdbsupport/agent.h" |
8de71aab | 45 | #include "auxv.h" |
a7068b60 | 46 | #include "target-debug.h" |
41fd2b0f PA |
47 | #include "top.h" |
48 | #include "event-top.h" | |
325fac50 | 49 | #include <algorithm> |
268a13a5 | 50 | #include "gdbsupport/byte-vector.h" |
4a72de73 | 51 | #include "gdbsupport/search.h" |
e671cd59 | 52 | #include "terminal.h" |
d9f719f1 | 53 | #include <unordered_map> |
121b3efd | 54 | #include "target-connection.h" |
670e35fa | 55 | #include "valprint.h" |
0f8e2034 | 56 | #include "cli/cli-decode.h" |
c906108c | 57 | |
f0f9ff95 TT |
58 | static void generic_tls_error (void) ATTRIBUTE_NORETURN; |
59 | ||
0a4f40a2 | 60 | static void default_terminal_info (struct target_ops *, const char *, int); |
c906108c | 61 | |
5009afc5 AS |
62 | static int default_watchpoint_addr_within_range (struct target_ops *, |
63 | CORE_ADDR, CORE_ADDR, int); | |
64 | ||
31568a15 TT |
65 | static int default_region_ok_for_hw_watchpoint (struct target_ops *, |
66 | CORE_ADDR, int); | |
e0d24f8d | 67 | |
a30bf1f1 | 68 | static void default_rcmd (struct target_ops *, const char *, struct ui_file *); |
a53f3625 | 69 | |
4229b31d | 70 | static ptid_t default_get_ada_task_ptid (struct target_ops *self, |
c80e29db | 71 | long lwp, ULONGEST tid); |
4229b31d | 72 | |
8d657035 TT |
73 | static void default_mourn_inferior (struct target_ops *self); |
74 | ||
58a5184e TT |
75 | static int default_search_memory (struct target_ops *ops, |
76 | CORE_ADDR start_addr, | |
77 | ULONGEST search_space_len, | |
78 | const gdb_byte *pattern, | |
79 | ULONGEST pattern_len, | |
80 | CORE_ADDR *found_addrp); | |
81 | ||
936d2992 PA |
82 | static int default_verify_memory (struct target_ops *self, |
83 | const gdb_byte *data, | |
84 | CORE_ADDR memaddr, ULONGEST size); | |
85 | ||
c25c4a8b | 86 | static void tcomplain (void) ATTRIBUTE_NORETURN; |
c906108c | 87 | |
a121b7c1 | 88 | static struct target_ops *find_default_run_target (const char *); |
c906108c | 89 | |
0b5a2719 TT |
90 | static int dummy_find_memory_regions (struct target_ops *self, |
91 | find_memory_region_ftype ignore1, | |
92 | void *ignore2); | |
93 | ||
24f5300a SM |
94 | static gdb::unique_xmalloc_ptr<char> dummy_make_corefile_notes |
95 | (struct target_ops *self, bfd *ignore1, int *ignore2); | |
16f796b1 | 96 | |
a068643d | 97 | static std::string default_pid_to_str (struct target_ops *ops, ptid_t ptid); |
770234d3 | 98 | |
fe31bf5b TT |
99 | static enum exec_direction_kind default_execution_direction |
100 | (struct target_ops *self); | |
101 | ||
d9f719f1 PA |
102 | /* Mapping between target_info objects (which have address identity) |
103 | and corresponding open/factory function/callback. Each add_target | |
104 | call adds one entry to this map, and registers a "target | |
105 | TARGET_NAME" command that when invoked calls the factory registered | |
106 | here. The target_info object is associated with the command via | |
107 | the command's context. */ | |
108 | static std::unordered_map<const target_info *, target_open_ftype *> | |
109 | target_factories; | |
c906108c | 110 | |
06b5b831 | 111 | /* The singleton debug target. */ |
c906108c | 112 | |
f6ac5f3d | 113 | static struct target_ops *the_debug_target; |
c906108c | 114 | |
c906108c SS |
115 | /* Command list for target. */ |
116 | ||
117 | static struct cmd_list_element *targetlist = NULL; | |
118 | ||
491144b5 | 119 | /* True if we should trust readonly sections from the |
cf7a04e8 DJ |
120 | executable when reading memory. */ |
121 | ||
491144b5 | 122 | static bool trust_readonly = false; |
cf7a04e8 | 123 | |
8defab1a DJ |
124 | /* Nonzero if we should show true memory content including |
125 | memory breakpoint inserted by gdb. */ | |
126 | ||
127 | static int show_memory_breakpoints = 0; | |
128 | ||
d914c394 SS |
129 | /* These globals control whether GDB attempts to perform these |
130 | operations; they are useful for targets that need to prevent | |
30baf67b | 131 | inadvertent disruption, such as in non-stop mode. */ |
d914c394 | 132 | |
491144b5 | 133 | bool may_write_registers = true; |
d914c394 | 134 | |
491144b5 | 135 | bool may_write_memory = true; |
d914c394 | 136 | |
491144b5 | 137 | bool may_insert_breakpoints = true; |
d914c394 | 138 | |
491144b5 | 139 | bool may_insert_tracepoints = true; |
d914c394 | 140 | |
491144b5 | 141 | bool may_insert_fast_tracepoints = true; |
d914c394 | 142 | |
491144b5 | 143 | bool may_stop = true; |
d914c394 | 144 | |
c906108c SS |
145 | /* Non-zero if we want to see trace of target level stuff. */ |
146 | ||
ccce17b0 | 147 | static unsigned int targetdebug = 0; |
3cecbbbe TT |
148 | |
149 | static void | |
eb4c3f4a | 150 | set_targetdebug (const char *args, int from_tty, struct cmd_list_element *c) |
3cecbbbe | 151 | { |
f6ac5f3d | 152 | if (targetdebug) |
02980c56 | 153 | current_inferior ()->push_target (the_debug_target); |
f6ac5f3d | 154 | else |
fadf6add | 155 | current_inferior ()->unpush_target (the_debug_target); |
3cecbbbe TT |
156 | } |
157 | ||
920d2a44 AC |
158 | static void |
159 | show_targetdebug (struct ui_file *file, int from_tty, | |
160 | struct cmd_list_element *c, const char *value) | |
161 | { | |
6cb06a8c | 162 | gdb_printf (file, _("Target debugging is %s.\n"), value); |
920d2a44 | 163 | } |
c906108c | 164 | |
c35b1492 | 165 | int |
a739972c | 166 | target_has_memory () |
c35b1492 | 167 | { |
328d42d8 SM |
168 | for (target_ops *t = current_inferior ()->top_target (); |
169 | t != NULL; | |
170 | t = t->beneath ()) | |
f6ac5f3d | 171 | if (t->has_memory ()) |
c35b1492 PA |
172 | return 1; |
173 | ||
174 | return 0; | |
175 | } | |
176 | ||
177 | int | |
841de120 | 178 | target_has_stack () |
c35b1492 | 179 | { |
328d42d8 SM |
180 | for (target_ops *t = current_inferior ()->top_target (); |
181 | t != NULL; | |
182 | t = t->beneath ()) | |
f6ac5f3d | 183 | if (t->has_stack ()) |
c35b1492 PA |
184 | return 1; |
185 | ||
186 | return 0; | |
187 | } | |
188 | ||
189 | int | |
9dccd06e | 190 | target_has_registers () |
c35b1492 | 191 | { |
328d42d8 SM |
192 | for (target_ops *t = current_inferior ()->top_target (); |
193 | t != NULL; | |
194 | t = t->beneath ()) | |
f6ac5f3d | 195 | if (t->has_registers ()) |
c35b1492 PA |
196 | return 1; |
197 | ||
198 | return 0; | |
199 | } | |
200 | ||
5018ce90 | 201 | bool |
55f6301a | 202 | target_has_execution (inferior *inf) |
c35b1492 | 203 | { |
55f6301a TT |
204 | if (inf == nullptr) |
205 | inf = current_inferior (); | |
206 | ||
5b6d1e4f PA |
207 | for (target_ops *t = inf->top_target (); |
208 | t != nullptr; | |
209 | t = inf->find_target_beneath (t)) | |
5018ce90 PA |
210 | if (t->has_execution (inf)) |
211 | return true; | |
c35b1492 | 212 | |
5018ce90 | 213 | return false; |
c35b1492 PA |
214 | } |
215 | ||
d777bf0d SM |
216 | const char * |
217 | target_shortname () | |
218 | { | |
328d42d8 | 219 | return current_inferior ()->top_target ()->shortname (); |
d777bf0d SM |
220 | } |
221 | ||
222 | /* See target.h. */ | |
223 | ||
224 | bool | |
225 | target_attach_no_wait () | |
226 | { | |
328d42d8 | 227 | return current_inferior ()->top_target ()->attach_no_wait (); |
d777bf0d SM |
228 | } |
229 | ||
230 | /* See target.h. */ | |
231 | ||
232 | void | |
233 | target_post_attach (int pid) | |
234 | { | |
328d42d8 | 235 | return current_inferior ()->top_target ()->post_attach (pid); |
d777bf0d SM |
236 | } |
237 | ||
238 | /* See target.h. */ | |
239 | ||
240 | void | |
241 | target_prepare_to_store (regcache *regcache) | |
242 | { | |
328d42d8 | 243 | return current_inferior ()->top_target ()->prepare_to_store (regcache); |
d777bf0d SM |
244 | } |
245 | ||
246 | /* See target.h. */ | |
247 | ||
248 | bool | |
249 | target_supports_enable_disable_tracepoint () | |
250 | { | |
328d42d8 SM |
251 | target_ops *target = current_inferior ()->top_target (); |
252 | ||
253 | return target->supports_enable_disable_tracepoint (); | |
d777bf0d SM |
254 | } |
255 | ||
256 | bool | |
257 | target_supports_string_tracing () | |
258 | { | |
328d42d8 | 259 | return current_inferior ()->top_target ()->supports_string_tracing (); |
d777bf0d SM |
260 | } |
261 | ||
262 | /* See target.h. */ | |
263 | ||
264 | bool | |
265 | target_supports_evaluation_of_breakpoint_conditions () | |
266 | { | |
328d42d8 SM |
267 | target_ops *target = current_inferior ()->top_target (); |
268 | ||
269 | return target->supports_evaluation_of_breakpoint_conditions (); | |
d777bf0d SM |
270 | } |
271 | ||
272 | /* See target.h. */ | |
273 | ||
274 | bool | |
275 | target_supports_dumpcore () | |
276 | { | |
328d42d8 | 277 | return current_inferior ()->top_target ()->supports_dumpcore (); |
d777bf0d SM |
278 | } |
279 | ||
280 | /* See target.h. */ | |
281 | ||
282 | void | |
283 | target_dumpcore (const char *filename) | |
284 | { | |
328d42d8 | 285 | return current_inferior ()->top_target ()->dumpcore (filename); |
d777bf0d SM |
286 | } |
287 | ||
288 | /* See target.h. */ | |
289 | ||
290 | bool | |
291 | target_can_run_breakpoint_commands () | |
292 | { | |
328d42d8 | 293 | return current_inferior ()->top_target ()->can_run_breakpoint_commands (); |
d777bf0d SM |
294 | } |
295 | ||
296 | /* See target.h. */ | |
297 | ||
298 | void | |
299 | target_files_info () | |
300 | { | |
328d42d8 | 301 | return current_inferior ()->top_target ()->files_info (); |
d777bf0d SM |
302 | } |
303 | ||
304 | /* See target.h. */ | |
d777bf0d SM |
305 | |
306 | int | |
307 | target_insert_fork_catchpoint (int pid) | |
308 | { | |
328d42d8 | 309 | return current_inferior ()->top_target ()->insert_fork_catchpoint (pid); |
d777bf0d SM |
310 | } |
311 | ||
312 | /* See target.h. */ | |
313 | ||
314 | int | |
315 | target_remove_fork_catchpoint (int pid) | |
316 | { | |
328d42d8 | 317 | return current_inferior ()->top_target ()->remove_fork_catchpoint (pid); |
d777bf0d SM |
318 | } |
319 | ||
320 | /* See target.h. */ | |
321 | ||
322 | int | |
323 | target_insert_vfork_catchpoint (int pid) | |
324 | { | |
328d42d8 | 325 | return current_inferior ()->top_target ()->insert_vfork_catchpoint (pid); |
d777bf0d SM |
326 | } |
327 | ||
328 | /* See target.h. */ | |
329 | ||
330 | int | |
331 | target_remove_vfork_catchpoint (int pid) | |
332 | { | |
328d42d8 | 333 | return current_inferior ()->top_target ()->remove_vfork_catchpoint (pid); |
d777bf0d SM |
334 | } |
335 | ||
336 | /* See target.h. */ | |
337 | ||
338 | int | |
339 | target_insert_exec_catchpoint (int pid) | |
340 | { | |
328d42d8 | 341 | return current_inferior ()->top_target ()->insert_exec_catchpoint (pid); |
d777bf0d SM |
342 | } |
343 | ||
344 | /* See target.h. */ | |
345 | ||
346 | int | |
347 | target_remove_exec_catchpoint (int pid) | |
348 | { | |
328d42d8 | 349 | return current_inferior ()->top_target ()->remove_exec_catchpoint (pid); |
d777bf0d SM |
350 | } |
351 | ||
352 | /* See target.h. */ | |
353 | ||
354 | int | |
355 | target_set_syscall_catchpoint (int pid, bool needed, int any_count, | |
356 | gdb::array_view<const int> syscall_counts) | |
357 | { | |
328d42d8 SM |
358 | target_ops *target = current_inferior ()->top_target (); |
359 | ||
360 | return target->set_syscall_catchpoint (pid, needed, any_count, | |
361 | syscall_counts); | |
d777bf0d SM |
362 | } |
363 | ||
364 | /* See target.h. */ | |
365 | ||
366 | void | |
367 | target_rcmd (const char *command, struct ui_file *outbuf) | |
368 | { | |
328d42d8 | 369 | return current_inferior ()->top_target ()->rcmd (command, outbuf); |
d777bf0d SM |
370 | } |
371 | ||
372 | /* See target.h. */ | |
373 | ||
374 | bool | |
375 | target_can_lock_scheduler () | |
376 | { | |
328d42d8 SM |
377 | target_ops *target = current_inferior ()->top_target (); |
378 | ||
379 | return (target->get_thread_control_capabilities ()& tc_schedlock) != 0; | |
d777bf0d SM |
380 | } |
381 | ||
382 | /* See target.h. */ | |
383 | ||
384 | bool | |
385 | target_can_async_p () | |
386 | { | |
0c1e6e26 AB |
387 | return target_can_async_p (current_inferior ()->top_target ()); |
388 | } | |
389 | ||
390 | /* See target.h. */ | |
391 | ||
392 | bool | |
393 | target_can_async_p (struct target_ops *target) | |
394 | { | |
fce6cd34 AB |
395 | if (!target_async_permitted) |
396 | return false; | |
0c1e6e26 | 397 | return target->can_async_p (); |
d777bf0d SM |
398 | } |
399 | ||
400 | /* See target.h. */ | |
401 | ||
402 | bool | |
403 | target_is_async_p () | |
404 | { | |
bf94662b AB |
405 | bool result = current_inferior ()->top_target ()->is_async_p (); |
406 | gdb_assert (target_async_permitted || !result); | |
407 | return result; | |
d777bf0d SM |
408 | } |
409 | ||
410 | exec_direction_kind | |
411 | target_execution_direction () | |
412 | { | |
328d42d8 | 413 | return current_inferior ()->top_target ()->execution_direction (); |
d777bf0d SM |
414 | } |
415 | ||
416 | /* See target.h. */ | |
417 | ||
418 | const char * | |
419 | target_extra_thread_info (thread_info *tp) | |
420 | { | |
328d42d8 | 421 | return current_inferior ()->top_target ()->extra_thread_info (tp); |
d777bf0d SM |
422 | } |
423 | ||
424 | /* See target.h. */ | |
425 | ||
0e90c441 | 426 | const char * |
d777bf0d SM |
427 | target_pid_to_exec_file (int pid) |
428 | { | |
328d42d8 | 429 | return current_inferior ()->top_target ()->pid_to_exec_file (pid); |
d777bf0d SM |
430 | } |
431 | ||
432 | /* See target.h. */ | |
433 | ||
434 | gdbarch * | |
435 | target_thread_architecture (ptid_t ptid) | |
436 | { | |
328d42d8 | 437 | return current_inferior ()->top_target ()->thread_architecture (ptid); |
d777bf0d SM |
438 | } |
439 | ||
440 | /* See target.h. */ | |
441 | ||
442 | int | |
443 | target_find_memory_regions (find_memory_region_ftype func, void *data) | |
444 | { | |
328d42d8 | 445 | return current_inferior ()->top_target ()->find_memory_regions (func, data); |
d777bf0d SM |
446 | } |
447 | ||
448 | /* See target.h. */ | |
449 | ||
450 | gdb::unique_xmalloc_ptr<char> | |
451 | target_make_corefile_notes (bfd *bfd, int *size_p) | |
452 | { | |
328d42d8 | 453 | return current_inferior ()->top_target ()->make_corefile_notes (bfd, size_p); |
d777bf0d SM |
454 | } |
455 | ||
456 | gdb_byte * | |
457 | target_get_bookmark (const char *args, int from_tty) | |
458 | { | |
328d42d8 | 459 | return current_inferior ()->top_target ()->get_bookmark (args, from_tty); |
d777bf0d SM |
460 | } |
461 | ||
462 | void | |
463 | target_goto_bookmark (const gdb_byte *arg, int from_tty) | |
464 | { | |
328d42d8 | 465 | return current_inferior ()->top_target ()->goto_bookmark (arg, from_tty); |
d777bf0d SM |
466 | } |
467 | ||
468 | /* See target.h. */ | |
469 | ||
470 | bool | |
471 | target_stopped_by_watchpoint () | |
472 | { | |
328d42d8 | 473 | return current_inferior ()->top_target ()->stopped_by_watchpoint (); |
d777bf0d SM |
474 | } |
475 | ||
476 | /* See target.h. */ | |
477 | ||
478 | bool | |
479 | target_stopped_by_sw_breakpoint () | |
480 | { | |
328d42d8 | 481 | return current_inferior ()->top_target ()->stopped_by_sw_breakpoint (); |
d777bf0d SM |
482 | } |
483 | ||
484 | bool | |
485 | target_supports_stopped_by_sw_breakpoint () | |
486 | { | |
328d42d8 SM |
487 | target_ops *target = current_inferior ()->top_target (); |
488 | ||
489 | return target->supports_stopped_by_sw_breakpoint (); | |
d777bf0d SM |
490 | } |
491 | ||
492 | bool | |
493 | target_stopped_by_hw_breakpoint () | |
494 | { | |
328d42d8 | 495 | return current_inferior ()->top_target ()->stopped_by_hw_breakpoint (); |
d777bf0d SM |
496 | } |
497 | ||
498 | bool | |
499 | target_supports_stopped_by_hw_breakpoint () | |
500 | { | |
328d42d8 SM |
501 | target_ops *target = current_inferior ()->top_target (); |
502 | ||
503 | return target->supports_stopped_by_hw_breakpoint (); | |
d777bf0d SM |
504 | } |
505 | ||
506 | /* See target.h. */ | |
507 | ||
508 | bool | |
509 | target_have_steppable_watchpoint () | |
510 | { | |
328d42d8 | 511 | return current_inferior ()->top_target ()->have_steppable_watchpoint (); |
d777bf0d SM |
512 | } |
513 | ||
514 | /* See target.h. */ | |
515 | ||
516 | int | |
517 | target_can_use_hardware_watchpoint (bptype type, int cnt, int othertype) | |
518 | { | |
328d42d8 SM |
519 | target_ops *target = current_inferior ()->top_target (); |
520 | ||
521 | return target->can_use_hw_breakpoint (type, cnt, othertype); | |
d777bf0d SM |
522 | } |
523 | ||
524 | /* See target.h. */ | |
525 | ||
526 | int | |
527 | target_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
528 | { | |
328d42d8 SM |
529 | target_ops *target = current_inferior ()->top_target (); |
530 | ||
531 | return target->region_ok_for_hw_watchpoint (addr, len); | |
d777bf0d SM |
532 | } |
533 | ||
534 | ||
535 | int | |
536 | target_can_do_single_step () | |
537 | { | |
328d42d8 | 538 | return current_inferior ()->top_target ()->can_do_single_step (); |
d777bf0d SM |
539 | } |
540 | ||
541 | /* See target.h. */ | |
542 | ||
543 | int | |
544 | target_insert_watchpoint (CORE_ADDR addr, int len, target_hw_bp_type type, | |
545 | expression *cond) | |
546 | { | |
328d42d8 SM |
547 | target_ops *target = current_inferior ()->top_target (); |
548 | ||
549 | return target->insert_watchpoint (addr, len, type, cond); | |
d777bf0d SM |
550 | } |
551 | ||
552 | /* See target.h. */ | |
553 | ||
554 | int | |
555 | target_remove_watchpoint (CORE_ADDR addr, int len, target_hw_bp_type type, | |
556 | expression *cond) | |
557 | { | |
328d42d8 SM |
558 | target_ops *target = current_inferior ()->top_target (); |
559 | ||
560 | return target->remove_watchpoint (addr, len, type, cond); | |
d777bf0d SM |
561 | } |
562 | ||
563 | /* See target.h. */ | |
564 | ||
565 | int | |
566 | target_insert_hw_breakpoint (gdbarch *gdbarch, bp_target_info *bp_tgt) | |
567 | { | |
328d42d8 SM |
568 | target_ops *target = current_inferior ()->top_target (); |
569 | ||
570 | return target->insert_hw_breakpoint (gdbarch, bp_tgt); | |
d777bf0d SM |
571 | } |
572 | ||
573 | /* See target.h. */ | |
574 | ||
575 | int | |
576 | target_remove_hw_breakpoint (gdbarch *gdbarch, bp_target_info *bp_tgt) | |
577 | { | |
328d42d8 SM |
578 | target_ops *target = current_inferior ()->top_target (); |
579 | ||
580 | return target->remove_hw_breakpoint (gdbarch, bp_tgt); | |
d777bf0d SM |
581 | } |
582 | ||
583 | /* See target.h. */ | |
584 | ||
585 | bool | |
586 | target_can_accel_watchpoint_condition (CORE_ADDR addr, int len, int type, | |
587 | expression *cond) | |
588 | { | |
328d42d8 SM |
589 | target_ops *target = current_inferior ()->top_target (); |
590 | ||
591 | return target->can_accel_watchpoint_condition (addr, len, type, cond); | |
d777bf0d SM |
592 | } |
593 | ||
594 | /* See target.h. */ | |
595 | ||
596 | bool | |
597 | target_can_execute_reverse () | |
598 | { | |
328d42d8 | 599 | return current_inferior ()->top_target ()->can_execute_reverse (); |
d777bf0d SM |
600 | } |
601 | ||
602 | ptid_t | |
c80e29db | 603 | target_get_ada_task_ptid (long lwp, ULONGEST tid) |
d777bf0d | 604 | { |
328d42d8 | 605 | return current_inferior ()->top_target ()->get_ada_task_ptid (lwp, tid); |
d777bf0d SM |
606 | } |
607 | ||
608 | bool | |
609 | target_filesystem_is_local () | |
610 | { | |
328d42d8 | 611 | return current_inferior ()->top_target ()->filesystem_is_local (); |
d777bf0d SM |
612 | } |
613 | ||
614 | void | |
615 | target_trace_init () | |
616 | { | |
328d42d8 | 617 | return current_inferior ()->top_target ()->trace_init (); |
d777bf0d SM |
618 | } |
619 | ||
620 | void | |
621 | target_download_tracepoint (bp_location *location) | |
622 | { | |
328d42d8 | 623 | return current_inferior ()->top_target ()->download_tracepoint (location); |
d777bf0d SM |
624 | } |
625 | ||
626 | bool | |
627 | target_can_download_tracepoint () | |
628 | { | |
328d42d8 | 629 | return current_inferior ()->top_target ()->can_download_tracepoint (); |
d777bf0d SM |
630 | } |
631 | ||
632 | void | |
633 | target_download_trace_state_variable (const trace_state_variable &tsv) | |
634 | { | |
328d42d8 SM |
635 | target_ops *target = current_inferior ()->top_target (); |
636 | ||
637 | return target->download_trace_state_variable (tsv); | |
d777bf0d SM |
638 | } |
639 | ||
640 | void | |
641 | target_enable_tracepoint (bp_location *loc) | |
642 | { | |
328d42d8 | 643 | return current_inferior ()->top_target ()->enable_tracepoint (loc); |
d777bf0d SM |
644 | } |
645 | ||
646 | void | |
647 | target_disable_tracepoint (bp_location *loc) | |
648 | { | |
328d42d8 | 649 | return current_inferior ()->top_target ()->disable_tracepoint (loc); |
d777bf0d SM |
650 | } |
651 | ||
652 | void | |
653 | target_trace_start () | |
654 | { | |
328d42d8 | 655 | return current_inferior ()->top_target ()->trace_start (); |
d777bf0d SM |
656 | } |
657 | ||
658 | void | |
659 | target_trace_set_readonly_regions () | |
660 | { | |
328d42d8 | 661 | return current_inferior ()->top_target ()->trace_set_readonly_regions (); |
d777bf0d SM |
662 | } |
663 | ||
664 | int | |
665 | target_get_trace_status (trace_status *ts) | |
666 | { | |
328d42d8 | 667 | return current_inferior ()->top_target ()->get_trace_status (ts); |
d777bf0d SM |
668 | } |
669 | ||
670 | void | |
671 | target_get_tracepoint_status (breakpoint *tp, uploaded_tp *utp) | |
672 | { | |
328d42d8 | 673 | return current_inferior ()->top_target ()->get_tracepoint_status (tp, utp); |
d777bf0d SM |
674 | } |
675 | ||
676 | void | |
677 | target_trace_stop () | |
678 | { | |
328d42d8 | 679 | return current_inferior ()->top_target ()->trace_stop (); |
d777bf0d SM |
680 | } |
681 | ||
682 | int | |
683 | target_trace_find (trace_find_type type, int num, | |
684 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) | |
685 | { | |
328d42d8 SM |
686 | target_ops *target = current_inferior ()->top_target (); |
687 | ||
688 | return target->trace_find (type, num, addr1, addr2, tpp); | |
d777bf0d SM |
689 | } |
690 | ||
691 | bool | |
692 | target_get_trace_state_variable_value (int tsv, LONGEST *val) | |
693 | { | |
328d42d8 SM |
694 | target_ops *target = current_inferior ()->top_target (); |
695 | ||
696 | return target->get_trace_state_variable_value (tsv, val); | |
d777bf0d SM |
697 | } |
698 | ||
699 | int | |
700 | target_save_trace_data (const char *filename) | |
701 | { | |
328d42d8 | 702 | return current_inferior ()->top_target ()->save_trace_data (filename); |
d777bf0d SM |
703 | } |
704 | ||
705 | int | |
706 | target_upload_tracepoints (uploaded_tp **utpp) | |
707 | { | |
328d42d8 | 708 | return current_inferior ()->top_target ()->upload_tracepoints (utpp); |
d777bf0d SM |
709 | } |
710 | ||
711 | int | |
712 | target_upload_trace_state_variables (uploaded_tsv **utsvp) | |
713 | { | |
328d42d8 SM |
714 | target_ops *target = current_inferior ()->top_target (); |
715 | ||
716 | return target->upload_trace_state_variables (utsvp); | |
d777bf0d SM |
717 | } |
718 | ||
719 | LONGEST | |
720 | target_get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
721 | { | |
328d42d8 SM |
722 | target_ops *target = current_inferior ()->top_target (); |
723 | ||
724 | return target->get_raw_trace_data (buf, offset, len); | |
d777bf0d SM |
725 | } |
726 | ||
727 | int | |
728 | target_get_min_fast_tracepoint_insn_len () | |
729 | { | |
328d42d8 SM |
730 | target_ops *target = current_inferior ()->top_target (); |
731 | ||
732 | return target->get_min_fast_tracepoint_insn_len (); | |
d777bf0d SM |
733 | } |
734 | ||
735 | void | |
736 | target_set_disconnected_tracing (int val) | |
737 | { | |
328d42d8 | 738 | return current_inferior ()->top_target ()->set_disconnected_tracing (val); |
d777bf0d SM |
739 | } |
740 | ||
741 | void | |
742 | target_set_circular_trace_buffer (int val) | |
743 | { | |
328d42d8 | 744 | return current_inferior ()->top_target ()->set_circular_trace_buffer (val); |
d777bf0d SM |
745 | } |
746 | ||
747 | void | |
748 | target_set_trace_buffer_size (LONGEST val) | |
749 | { | |
328d42d8 | 750 | return current_inferior ()->top_target ()->set_trace_buffer_size (val); |
d777bf0d SM |
751 | } |
752 | ||
753 | bool | |
754 | target_set_trace_notes (const char *user, const char *notes, | |
755 | const char *stopnotes) | |
756 | { | |
328d42d8 SM |
757 | target_ops *target = current_inferior ()->top_target (); |
758 | ||
759 | return target->set_trace_notes (user, notes, stopnotes); | |
d777bf0d SM |
760 | } |
761 | ||
762 | bool | |
763 | target_get_tib_address (ptid_t ptid, CORE_ADDR *addr) | |
764 | { | |
328d42d8 | 765 | return current_inferior ()->top_target ()->get_tib_address (ptid, addr); |
d777bf0d SM |
766 | } |
767 | ||
768 | void | |
769 | target_set_permissions () | |
770 | { | |
328d42d8 | 771 | return current_inferior ()->top_target ()->set_permissions (); |
d777bf0d SM |
772 | } |
773 | ||
774 | bool | |
775 | target_static_tracepoint_marker_at (CORE_ADDR addr, | |
776 | static_tracepoint_marker *marker) | |
777 | { | |
328d42d8 SM |
778 | target_ops *target = current_inferior ()->top_target (); |
779 | ||
780 | return target->static_tracepoint_marker_at (addr, marker); | |
d777bf0d SM |
781 | } |
782 | ||
783 | std::vector<static_tracepoint_marker> | |
784 | target_static_tracepoint_markers_by_strid (const char *marker_id) | |
785 | { | |
328d42d8 SM |
786 | target_ops *target = current_inferior ()->top_target (); |
787 | ||
788 | return target->static_tracepoint_markers_by_strid (marker_id); | |
d777bf0d SM |
789 | } |
790 | ||
791 | traceframe_info_up | |
792 | target_traceframe_info () | |
793 | { | |
328d42d8 | 794 | return current_inferior ()->top_target ()->traceframe_info (); |
d777bf0d SM |
795 | } |
796 | ||
797 | bool | |
798 | target_use_agent (bool use) | |
799 | { | |
328d42d8 | 800 | return current_inferior ()->top_target ()->use_agent (use); |
d777bf0d SM |
801 | } |
802 | ||
803 | bool | |
804 | target_can_use_agent () | |
805 | { | |
328d42d8 | 806 | return current_inferior ()->top_target ()->can_use_agent (); |
d777bf0d SM |
807 | } |
808 | ||
809 | bool | |
810 | target_augmented_libraries_svr4_read () | |
811 | { | |
328d42d8 | 812 | return current_inferior ()->top_target ()->augmented_libraries_svr4_read (); |
d777bf0d SM |
813 | } |
814 | ||
815 | bool | |
816 | target_supports_memory_tagging () | |
817 | { | |
328d42d8 | 818 | return current_inferior ()->top_target ()->supports_memory_tagging (); |
d777bf0d SM |
819 | } |
820 | ||
821 | bool | |
822 | target_fetch_memtags (CORE_ADDR address, size_t len, gdb::byte_vector &tags, | |
823 | int type) | |
824 | { | |
328d42d8 | 825 | return current_inferior ()->top_target ()->fetch_memtags (address, len, tags, type); |
d777bf0d SM |
826 | } |
827 | ||
828 | bool | |
829 | target_store_memtags (CORE_ADDR address, size_t len, | |
830 | const gdb::byte_vector &tags, int type) | |
831 | { | |
328d42d8 | 832 | return current_inferior ()->top_target ()->store_memtags (address, len, tags, type); |
d777bf0d SM |
833 | } |
834 | ||
835 | void | |
836 | target_log_command (const char *p) | |
837 | { | |
328d42d8 | 838 | return current_inferior ()->top_target ()->log_command (p); |
d777bf0d SM |
839 | } |
840 | ||
8981c758 TT |
841 | /* This is used to implement the various target commands. */ |
842 | ||
843 | static void | |
eb4c3f4a | 844 | open_target (const char *args, int from_tty, struct cmd_list_element *command) |
8981c758 | 845 | { |
0f8e2034 | 846 | auto *ti = static_cast<target_info *> (command->context ()); |
d9f719f1 | 847 | target_open_ftype *func = target_factories[ti]; |
8981c758 TT |
848 | |
849 | if (targetdebug) | |
6cb06a8c TT |
850 | gdb_printf (gdb_stdlog, "-> %s->open (...)\n", |
851 | ti->shortname); | |
8981c758 | 852 | |
d9f719f1 | 853 | func (args, from_tty); |
8981c758 TT |
854 | |
855 | if (targetdebug) | |
6cb06a8c TT |
856 | gdb_printf (gdb_stdlog, "<- %s->open (%s, %d)\n", |
857 | ti->shortname, args, from_tty); | |
8981c758 TT |
858 | } |
859 | ||
d9f719f1 | 860 | /* See target.h. */ |
c22a2b88 TT |
861 | |
862 | void | |
d9f719f1 PA |
863 | add_target (const target_info &t, target_open_ftype *func, |
864 | completer_ftype *completer) | |
c22a2b88 TT |
865 | { |
866 | struct cmd_list_element *c; | |
867 | ||
d9f719f1 PA |
868 | auto &func_slot = target_factories[&t]; |
869 | if (func_slot != nullptr) | |
f34652de | 870 | internal_error (_("target already added (\"%s\")."), t.shortname); |
d9f719f1 | 871 | func_slot = func; |
c906108c SS |
872 | |
873 | if (targetlist == NULL) | |
3b6acaee | 874 | add_basic_prefix_cmd ("target", class_run, _("\ |
1bedd215 | 875 | Connect to a target machine or process.\n\ |
c906108c SS |
876 | The first argument is the type or protocol of the target machine.\n\ |
877 | Remaining arguments are interpreted by the target protocol. For more\n\ | |
878 | information on the arguments for a particular protocol, type\n\ | |
1bedd215 | 879 | `help target ' followed by the protocol name."), |
2f822da5 | 880 | &targetlist, 0, &cmdlist); |
d9f719f1 | 881 | c = add_cmd (t.shortname, no_class, t.doc, &targetlist); |
0f8e2034 | 882 | c->set_context ((void *) &t); |
5538b03c | 883 | c->func = open_target; |
9852c492 YQ |
884 | if (completer != NULL) |
885 | set_cmd_completer (c, completer); | |
886 | } | |
887 | ||
b48d48eb MM |
888 | /* See target.h. */ |
889 | ||
890 | void | |
d9f719f1 | 891 | add_deprecated_target_alias (const target_info &tinfo, const char *alias) |
b48d48eb MM |
892 | { |
893 | struct cmd_list_element *c; | |
b48d48eb MM |
894 | |
895 | /* If we use add_alias_cmd, here, we do not get the deprecated warning, | |
896 | see PR cli/15104. */ | |
d9f719f1 | 897 | c = add_cmd (alias, no_class, tinfo.doc, &targetlist); |
5538b03c | 898 | c->func = open_target; |
0f8e2034 | 899 | c->set_context ((void *) &tinfo); |
8579fd13 AB |
900 | gdb::unique_xmalloc_ptr<char> alt |
901 | = xstrprintf ("target %s", tinfo.shortname); | |
902 | deprecate_cmd (c, alt.release ()); | |
b48d48eb MM |
903 | } |
904 | ||
c906108c SS |
905 | /* Stub functions */ |
906 | ||
7d85a9c0 JB |
907 | void |
908 | target_kill (void) | |
909 | { | |
ed14d866 SM |
910 | |
911 | /* If the commit_resume_state of the to-be-killed-inferior's process stratum | |
912 | is true, and this inferior is the last live inferior with resumed threads | |
913 | of that target, then we want to leave commit_resume_state to false, as the | |
914 | target won't have any resumed threads anymore. We achieve this with | |
915 | this scoped_disable_commit_resumed. On construction, it will set the flag | |
916 | to false. On destruction, it will only set it to true if there are resumed | |
917 | threads left. */ | |
918 | scoped_disable_commit_resumed disable ("killing"); | |
328d42d8 | 919 | current_inferior ()->top_target ()->kill (); |
7d85a9c0 JB |
920 | } |
921 | ||
11cf8741 | 922 | void |
9cbe5fff | 923 | target_load (const char *arg, int from_tty) |
11cf8741 | 924 | { |
4e5d721f | 925 | target_dcache_invalidate (); |
328d42d8 | 926 | current_inferior ()->top_target ()->load (arg, from_tty); |
11cf8741 JM |
927 | } |
928 | ||
223ffa71 | 929 | /* Define it. */ |
5842f62a | 930 | |
e671cd59 PA |
931 | target_terminal_state target_terminal::m_terminal_state |
932 | = target_terminal_state::is_ours; | |
5842f62a | 933 | |
223ffa71 | 934 | /* See target/target.h. */ |
5842f62a PA |
935 | |
936 | void | |
223ffa71 | 937 | target_terminal::init (void) |
5842f62a | 938 | { |
328d42d8 | 939 | current_inferior ()->top_target ()->terminal_init (); |
5842f62a | 940 | |
e671cd59 | 941 | m_terminal_state = target_terminal_state::is_ours; |
5842f62a PA |
942 | } |
943 | ||
223ffa71 | 944 | /* See target/target.h. */ |
2f99e8fc | 945 | |
d9d2d8b6 | 946 | void |
223ffa71 | 947 | target_terminal::inferior (void) |
d9d2d8b6 | 948 | { |
41fd2b0f PA |
949 | struct ui *ui = current_ui; |
950 | ||
d9d2d8b6 | 951 | /* A background resume (``run&'') should leave GDB in control of the |
3b12939d PA |
952 | terminal. */ |
953 | if (ui->prompt_state != PROMPT_BLOCKED) | |
d9d2d8b6 PA |
954 | return; |
955 | ||
215d3118 PA |
956 | /* Since we always run the inferior in the main console (unless "set |
957 | inferior-tty" is in effect), when some UI other than the main one | |
223ffa71 TT |
958 | calls target_terminal::inferior, then we leave the main UI's |
959 | terminal settings as is. */ | |
215d3118 PA |
960 | if (ui != main_ui) |
961 | return; | |
962 | ||
d9d2d8b6 PA |
963 | /* If GDB is resuming the inferior in the foreground, install |
964 | inferior's terminal modes. */ | |
e671cd59 PA |
965 | |
966 | struct inferior *inf = current_inferior (); | |
967 | ||
968 | if (inf->terminal_state != target_terminal_state::is_inferior) | |
969 | { | |
328d42d8 | 970 | current_inferior ()->top_target ()->terminal_inferior (); |
e671cd59 PA |
971 | inf->terminal_state = target_terminal_state::is_inferior; |
972 | } | |
973 | ||
974 | m_terminal_state = target_terminal_state::is_inferior; | |
975 | ||
976 | /* If the user hit C-c before, pretend that it was hit right | |
977 | here. */ | |
978 | if (check_quit_flag ()) | |
979 | target_pass_ctrlc (); | |
980 | } | |
981 | ||
982 | /* See target/target.h. */ | |
983 | ||
984 | void | |
985 | target_terminal::restore_inferior (void) | |
986 | { | |
987 | struct ui *ui = current_ui; | |
988 | ||
989 | /* See target_terminal::inferior(). */ | |
990 | if (ui->prompt_state != PROMPT_BLOCKED || ui != main_ui) | |
991 | return; | |
992 | ||
993 | /* Restore the terminal settings of inferiors that were in the | |
994 | foreground but are now ours_for_output due to a temporary | |
995 | target_target::ours_for_output() call. */ | |
996 | ||
997 | { | |
998 | scoped_restore_current_inferior restore_inferior; | |
e671cd59 | 999 | |
84b68c77 | 1000 | for (::inferior *inf : all_inferiors ()) |
e671cd59 PA |
1001 | { |
1002 | if (inf->terminal_state == target_terminal_state::is_ours_for_output) | |
1003 | { | |
1004 | set_current_inferior (inf); | |
328d42d8 | 1005 | current_inferior ()->top_target ()->terminal_inferior (); |
e671cd59 PA |
1006 | inf->terminal_state = target_terminal_state::is_inferior; |
1007 | } | |
1008 | } | |
1009 | } | |
1010 | ||
1011 | m_terminal_state = target_terminal_state::is_inferior; | |
93692b58 PA |
1012 | |
1013 | /* If the user hit C-c before, pretend that it was hit right | |
1014 | here. */ | |
1015 | if (check_quit_flag ()) | |
1016 | target_pass_ctrlc (); | |
5842f62a PA |
1017 | } |
1018 | ||
e671cd59 PA |
1019 | /* Switch terminal state to DESIRED_STATE, either is_ours, or |
1020 | is_ours_for_output. */ | |
1021 | ||
1022 | static void | |
1023 | target_terminal_is_ours_kind (target_terminal_state desired_state) | |
1024 | { | |
1025 | scoped_restore_current_inferior restore_inferior; | |
e671cd59 PA |
1026 | |
1027 | /* Must do this in two passes. First, have all inferiors save the | |
1028 | current terminal settings. Then, after all inferiors have add a | |
1029 | chance to safely save the terminal settings, restore GDB's | |
1030 | terminal settings. */ | |
1031 | ||
08036331 | 1032 | for (inferior *inf : all_inferiors ()) |
e671cd59 PA |
1033 | { |
1034 | if (inf->terminal_state == target_terminal_state::is_inferior) | |
1035 | { | |
1036 | set_current_inferior (inf); | |
328d42d8 | 1037 | current_inferior ()->top_target ()->terminal_save_inferior (); |
e671cd59 PA |
1038 | } |
1039 | } | |
1040 | ||
08036331 | 1041 | for (inferior *inf : all_inferiors ()) |
e671cd59 PA |
1042 | { |
1043 | /* Note we don't check is_inferior here like above because we | |
1044 | need to handle 'is_ours_for_output -> is_ours' too. Careful | |
1045 | to never transition from 'is_ours' to 'is_ours_for_output', | |
1046 | though. */ | |
1047 | if (inf->terminal_state != target_terminal_state::is_ours | |
1048 | && inf->terminal_state != desired_state) | |
1049 | { | |
1050 | set_current_inferior (inf); | |
1051 | if (desired_state == target_terminal_state::is_ours) | |
328d42d8 | 1052 | current_inferior ()->top_target ()->terminal_ours (); |
e671cd59 | 1053 | else if (desired_state == target_terminal_state::is_ours_for_output) |
328d42d8 | 1054 | current_inferior ()->top_target ()->terminal_ours_for_output (); |
e671cd59 PA |
1055 | else |
1056 | gdb_assert_not_reached ("unhandled desired state"); | |
1057 | inf->terminal_state = desired_state; | |
1058 | } | |
1059 | } | |
1060 | } | |
1061 | ||
223ffa71 | 1062 | /* See target/target.h. */ |
5842f62a PA |
1063 | |
1064 | void | |
223ffa71 | 1065 | target_terminal::ours () |
5842f62a | 1066 | { |
41fd2b0f PA |
1067 | struct ui *ui = current_ui; |
1068 | ||
223ffa71 | 1069 | /* See target_terminal::inferior. */ |
215d3118 PA |
1070 | if (ui != main_ui) |
1071 | return; | |
1072 | ||
e671cd59 | 1073 | if (m_terminal_state == target_terminal_state::is_ours) |
5842f62a PA |
1074 | return; |
1075 | ||
e671cd59 PA |
1076 | target_terminal_is_ours_kind (target_terminal_state::is_ours); |
1077 | m_terminal_state = target_terminal_state::is_ours; | |
5842f62a PA |
1078 | } |
1079 | ||
223ffa71 | 1080 | /* See target/target.h. */ |
5842f62a PA |
1081 | |
1082 | void | |
223ffa71 | 1083 | target_terminal::ours_for_output () |
5842f62a | 1084 | { |
215d3118 PA |
1085 | struct ui *ui = current_ui; |
1086 | ||
223ffa71 | 1087 | /* See target_terminal::inferior. */ |
215d3118 PA |
1088 | if (ui != main_ui) |
1089 | return; | |
1090 | ||
e671cd59 | 1091 | if (!target_terminal::is_inferior ()) |
5842f62a | 1092 | return; |
e671cd59 PA |
1093 | |
1094 | target_terminal_is_ours_kind (target_terminal_state::is_ours_for_output); | |
1095 | target_terminal::m_terminal_state = target_terminal_state::is_ours_for_output; | |
d9d2d8b6 | 1096 | } |
136d6dae | 1097 | |
223ffa71 TT |
1098 | /* See target/target.h. */ |
1099 | ||
1100 | void | |
1101 | target_terminal::info (const char *arg, int from_tty) | |
1102 | { | |
328d42d8 | 1103 | current_inferior ()->top_target ()->terminal_info (arg, from_tty); |
223ffa71 TT |
1104 | } |
1105 | ||
b0ed115f TT |
1106 | /* See target.h. */ |
1107 | ||
20f0d60d | 1108 | bool |
b0ed115f TT |
1109 | target_supports_terminal_ours (void) |
1110 | { | |
5b6d1e4f PA |
1111 | /* The current top target is the target at the top of the target |
1112 | stack of the current inferior. While normally there's always an | |
1113 | inferior, we must check for nullptr here because we can get here | |
1114 | very early during startup, before the initial inferior is first | |
1115 | created. */ | |
1116 | inferior *inf = current_inferior (); | |
20f0d60d | 1117 | |
5b6d1e4f | 1118 | if (inf == nullptr) |
20f0d60d | 1119 | return false; |
5b6d1e4f | 1120 | return inf->top_target ()->supports_terminal_ours (); |
b0ed115f TT |
1121 | } |
1122 | ||
c906108c | 1123 | static void |
fba45db2 | 1124 | tcomplain (void) |
c906108c | 1125 | { |
8a3fe4f8 | 1126 | error (_("You can't do that when your target is `%s'"), |
328d42d8 | 1127 | current_inferior ()->top_target ()->shortname ()); |
c906108c SS |
1128 | } |
1129 | ||
1130 | void | |
fba45db2 | 1131 | noprocess (void) |
c906108c | 1132 | { |
8a3fe4f8 | 1133 | error (_("You can't do that without a process to debug.")); |
c906108c SS |
1134 | } |
1135 | ||
c906108c | 1136 | static void |
0a4f40a2 | 1137 | default_terminal_info (struct target_ops *self, const char *args, int from_tty) |
c906108c | 1138 | { |
6cb06a8c | 1139 | gdb_printf (_("No saved terminal information.\n")); |
c906108c SS |
1140 | } |
1141 | ||
0ef643c8 JB |
1142 | /* A default implementation for the to_get_ada_task_ptid target method. |
1143 | ||
1144 | This function builds the PTID by using both LWP and TID as part of | |
1145 | the PTID lwp and tid elements. The pid used is the pid of the | |
1146 | inferior_ptid. */ | |
1147 | ||
2c0b251b | 1148 | static ptid_t |
c80e29db | 1149 | default_get_ada_task_ptid (struct target_ops *self, long lwp, ULONGEST tid) |
0ef643c8 | 1150 | { |
e99b03dc | 1151 | return ptid_t (inferior_ptid.pid (), lwp, tid); |
0ef643c8 JB |
1152 | } |
1153 | ||
32231432 | 1154 | static enum exec_direction_kind |
4c612759 | 1155 | default_execution_direction (struct target_ops *self) |
32231432 | 1156 | { |
05374cfd | 1157 | if (!target_can_execute_reverse ()) |
32231432 PA |
1158 | return EXEC_FORWARD; |
1159 | else if (!target_can_async_p ()) | |
1160 | return EXEC_FORWARD; | |
1161 | else | |
1162 | gdb_assert_not_reached ("\ | |
1163 | to_execution_direction must be implemented for reverse async"); | |
1164 | } | |
1165 | ||
a1740ee1 | 1166 | /* See target.h. */ |
c906108c | 1167 | |
5b6d1e4f | 1168 | void |
9678f8fe | 1169 | target_ops_ref_policy::decref (target_ops *t) |
5b6d1e4f PA |
1170 | { |
1171 | t->decref (); | |
1172 | if (t->refcount () == 0) | |
121b3efd PA |
1173 | { |
1174 | if (t->stratum () == process_stratum) | |
1175 | connection_list_remove (as_process_stratum_target (t)); | |
1176 | target_close (t); | |
1177 | } | |
5b6d1e4f PA |
1178 | } |
1179 | ||
1180 | /* See target.h. */ | |
1181 | ||
b26a4dcb | 1182 | void |
a1740ee1 | 1183 | target_stack::push (target_ops *t) |
c906108c | 1184 | { |
91e3d1d1 AB |
1185 | /* We must create a new reference first. It is possible that T is |
1186 | already pushed on this target stack, in which case we will first | |
1187 | unpush it below, before re-pushing it. If we don't increment the | |
1188 | reference count now, then when we unpush it, we might end up deleting | |
1189 | T, which is not good. */ | |
1190 | auto ref = target_ops_ref::new_reference (t); | |
5b6d1e4f | 1191 | |
66b4deae PA |
1192 | strata stratum = t->stratum (); |
1193 | ||
5b6d1e4f PA |
1194 | /* If there's already a target at this stratum, remove it. */ |
1195 | ||
91e3d1d1 AB |
1196 | if (m_stack[stratum].get () != nullptr) |
1197 | unpush (m_stack[stratum].get ()); | |
c906108c | 1198 | |
a1740ee1 | 1199 | /* Now add the new one. */ |
91e3d1d1 | 1200 | m_stack[stratum] = std::move (ref); |
5d502164 | 1201 | |
66b4deae PA |
1202 | if (m_top < stratum) |
1203 | m_top = stratum; | |
91e3d1d1 AB |
1204 | |
1205 | if (stratum == process_stratum) | |
1206 | connection_list_add (as_process_stratum_target (t)); | |
a1740ee1 PA |
1207 | } |
1208 | ||
1209 | /* See target.h. */ | |
c906108c | 1210 | |
a1740ee1 PA |
1211 | bool |
1212 | target_stack::unpush (target_ops *t) | |
c906108c | 1213 | { |
1688cb29 TT |
1214 | gdb_assert (t != NULL); |
1215 | ||
66b4deae PA |
1216 | strata stratum = t->stratum (); |
1217 | ||
1218 | if (stratum == dummy_stratum) | |
f34652de | 1219 | internal_error (_("Attempt to unpush the dummy target")); |
c8d104ad | 1220 | |
a1740ee1 PA |
1221 | /* Look for the specified target. Note that a target can only occur |
1222 | once in the target stack. */ | |
c906108c | 1223 | |
66b4deae | 1224 | if (m_stack[stratum] != t) |
258b763a | 1225 | { |
a1740ee1 PA |
1226 | /* If T wasn't pushed, quit. Only open targets should be |
1227 | closed. */ | |
1228 | return false; | |
258b763a | 1229 | } |
c906108c | 1230 | |
66b4deae | 1231 | if (m_top == stratum) |
bedc4734 | 1232 | m_top = this->find_beneath (t)->stratum (); |
c906108c | 1233 | |
91e3d1d1 AB |
1234 | /* Move the target reference off the target stack, this sets the pointer |
1235 | held in m_stack to nullptr, and places the reference in ref. When | |
1236 | ref goes out of scope its reference count will be decremented, which | |
1237 | might cause the target to close. | |
1238 | ||
1239 | We have to do it this way, and not just set the value in m_stack to | |
1240 | nullptr directly, because doing so would decrement the reference | |
1241 | count first, which might close the target, and closing the target | |
1242 | does a check that the target is not on any inferiors target_stack. */ | |
1243 | auto ref = std::move (m_stack[stratum]); | |
305436e0 | 1244 | |
a1740ee1 | 1245 | return true; |
c906108c SS |
1246 | } |
1247 | ||
fadf6add SM |
1248 | void |
1249 | target_unpusher::operator() (struct target_ops *ops) const | |
1250 | { | |
1251 | current_inferior ()->unpush_target (ops); | |
1252 | } | |
1253 | ||
f0f9ff95 TT |
1254 | /* Default implementation of to_get_thread_local_address. */ |
1255 | ||
1256 | static void | |
1257 | generic_tls_error (void) | |
1258 | { | |
1259 | throw_error (TLS_GENERIC_ERROR, | |
1260 | _("Cannot find thread-local variables on this target")); | |
1261 | } | |
1262 | ||
72f5cf0e | 1263 | /* Using the objfile specified in OBJFILE, find the address for the |
9e35dae4 DJ |
1264 | current thread's thread-local storage with offset OFFSET. */ |
1265 | CORE_ADDR | |
1266 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) | |
1267 | { | |
1268 | volatile CORE_ADDR addr = 0; | |
328d42d8 | 1269 | struct target_ops *target = current_inferior ()->top_target (); |
6e056c81 | 1270 | struct gdbarch *gdbarch = target_gdbarch (); |
9e35dae4 | 1271 | |
4cc98c36 JB |
1272 | /* If OBJFILE is a separate debug object file, look for the |
1273 | original object file. */ | |
1274 | if (objfile->separate_debug_objfile_backlink != NULL) | |
1275 | objfile = objfile->separate_debug_objfile_backlink; | |
1276 | ||
6e056c81 | 1277 | if (gdbarch_fetch_tls_load_module_address_p (gdbarch)) |
9e35dae4 DJ |
1278 | { |
1279 | ptid_t ptid = inferior_ptid; | |
9e35dae4 | 1280 | |
a70b8144 | 1281 | try |
9e35dae4 DJ |
1282 | { |
1283 | CORE_ADDR lm_addr; | |
1284 | ||
1285 | /* Fetch the load module address for this objfile. */ | |
6e056c81 | 1286 | lm_addr = gdbarch_fetch_tls_load_module_address (gdbarch, |
dda83cd7 | 1287 | objfile); |
9e35dae4 | 1288 | |
6e056c81 JB |
1289 | if (gdbarch_get_thread_local_address_p (gdbarch)) |
1290 | addr = gdbarch_get_thread_local_address (gdbarch, ptid, lm_addr, | |
1291 | offset); | |
1292 | else | |
1293 | addr = target->get_thread_local_address (ptid, lm_addr, offset); | |
9e35dae4 DJ |
1294 | } |
1295 | /* If an error occurred, print TLS related messages here. Otherwise, | |
dda83cd7 | 1296 | throw the error to some higher catcher. */ |
230d2906 | 1297 | catch (const gdb_exception &ex) |
9e35dae4 DJ |
1298 | { |
1299 | int objfile_is_library = (objfile->flags & OBJF_SHARED); | |
1300 | ||
1301 | switch (ex.error) | |
1302 | { | |
1303 | case TLS_NO_LIBRARY_SUPPORT_ERROR: | |
3e43a32a MS |
1304 | error (_("Cannot find thread-local variables " |
1305 | "in this thread library.")); | |
9e35dae4 DJ |
1306 | break; |
1307 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: | |
1308 | if (objfile_is_library) | |
1309 | error (_("Cannot find shared library `%s' in dynamic" | |
dda83cd7 | 1310 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
1311 | else |
1312 | error (_("Cannot find executable file `%s' in dynamic" | |
dda83cd7 | 1313 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
1314 | break; |
1315 | case TLS_NOT_ALLOCATED_YET_ERROR: | |
1316 | if (objfile_is_library) | |
1317 | error (_("The inferior has not yet allocated storage for" | |
dda83cd7 SM |
1318 | " thread-local variables in\n" |
1319 | "the shared library `%s'\n" | |
1320 | "for %s"), | |
a068643d TT |
1321 | objfile_name (objfile), |
1322 | target_pid_to_str (ptid).c_str ()); | |
9e35dae4 DJ |
1323 | else |
1324 | error (_("The inferior has not yet allocated storage for" | |
dda83cd7 SM |
1325 | " thread-local variables in\n" |
1326 | "the executable `%s'\n" | |
1327 | "for %s"), | |
a068643d TT |
1328 | objfile_name (objfile), |
1329 | target_pid_to_str (ptid).c_str ()); | |
9e35dae4 DJ |
1330 | break; |
1331 | case TLS_GENERIC_ERROR: | |
1332 | if (objfile_is_library) | |
1333 | error (_("Cannot find thread-local storage for %s, " | |
dda83cd7 | 1334 | "shared library %s:\n%s"), |
a068643d | 1335 | target_pid_to_str (ptid).c_str (), |
3d6e9d23 | 1336 | objfile_name (objfile), ex.what ()); |
9e35dae4 DJ |
1337 | else |
1338 | error (_("Cannot find thread-local storage for %s, " | |
dda83cd7 | 1339 | "executable file %s:\n%s"), |
a068643d | 1340 | target_pid_to_str (ptid).c_str (), |
3d6e9d23 | 1341 | objfile_name (objfile), ex.what ()); |
9e35dae4 DJ |
1342 | break; |
1343 | default: | |
eedc3f4f | 1344 | throw; |
9e35dae4 DJ |
1345 | break; |
1346 | } | |
1347 | } | |
1348 | } | |
9e35dae4 DJ |
1349 | else |
1350 | error (_("Cannot find thread-local variables on this target")); | |
1351 | ||
1352 | return addr; | |
1353 | } | |
1354 | ||
6be7b56e | 1355 | const char * |
01cb8804 | 1356 | target_xfer_status_to_string (enum target_xfer_status status) |
6be7b56e PA |
1357 | { |
1358 | #define CASE(X) case X: return #X | |
01cb8804 | 1359 | switch (status) |
6be7b56e PA |
1360 | { |
1361 | CASE(TARGET_XFER_E_IO); | |
bc113b4e | 1362 | CASE(TARGET_XFER_UNAVAILABLE); |
6be7b56e PA |
1363 | default: |
1364 | return "<unknown>"; | |
1365 | } | |
1366 | #undef CASE | |
1367 | }; | |
1368 | ||
1369 | ||
19cf757a | 1370 | const target_section_table * |
07b82ea5 PA |
1371 | target_get_section_table (struct target_ops *target) |
1372 | { | |
f6ac5f3d | 1373 | return target->get_section_table (); |
07b82ea5 PA |
1374 | } |
1375 | ||
8db32d44 | 1376 | /* Find a section containing ADDR. */ |
07b82ea5 | 1377 | |
19cf757a | 1378 | const struct target_section * |
8db32d44 AC |
1379 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
1380 | { | |
19cf757a | 1381 | const target_section_table *table = target_get_section_table (target); |
07b82ea5 PA |
1382 | |
1383 | if (table == NULL) | |
1384 | return NULL; | |
1385 | ||
19cf757a | 1386 | for (const target_section &secp : *table) |
8db32d44 | 1387 | { |
bb2a6777 TT |
1388 | if (addr >= secp.addr && addr < secp.endaddr) |
1389 | return &secp; | |
8db32d44 AC |
1390 | } |
1391 | return NULL; | |
1392 | } | |
1393 | ||
336aa7b7 AB |
1394 | /* See target.h. */ |
1395 | ||
1396 | const target_section_table * | |
1397 | default_get_section_table () | |
1398 | { | |
1399 | return ¤t_program_space->target_sections (); | |
1400 | } | |
0fec99e8 PA |
1401 | |
1402 | /* Helper for the memory xfer routines. Checks the attributes of the | |
1403 | memory region of MEMADDR against the read or write being attempted. | |
1404 | If the access is permitted returns true, otherwise returns false. | |
1405 | REGION_P is an optional output parameter. If not-NULL, it is | |
1406 | filled with a pointer to the memory region of MEMADDR. REG_LEN | |
1407 | returns LEN trimmed to the end of the region. This is how much the | |
1408 | caller can continue requesting, if the access is permitted. A | |
1409 | single xfer request must not straddle memory region boundaries. */ | |
1410 | ||
1411 | static int | |
1412 | memory_xfer_check_region (gdb_byte *readbuf, const gdb_byte *writebuf, | |
1413 | ULONGEST memaddr, ULONGEST len, ULONGEST *reg_len, | |
1414 | struct mem_region **region_p) | |
1415 | { | |
1416 | struct mem_region *region; | |
1417 | ||
1418 | region = lookup_mem_region (memaddr); | |
1419 | ||
1420 | if (region_p != NULL) | |
1421 | *region_p = region; | |
1422 | ||
1423 | switch (region->attrib.mode) | |
1424 | { | |
1425 | case MEM_RO: | |
1426 | if (writebuf != NULL) | |
1427 | return 0; | |
1428 | break; | |
1429 | ||
1430 | case MEM_WO: | |
1431 | if (readbuf != NULL) | |
1432 | return 0; | |
1433 | break; | |
1434 | ||
1435 | case MEM_FLASH: | |
1436 | /* We only support writing to flash during "load" for now. */ | |
1437 | if (writebuf != NULL) | |
1438 | error (_("Writing to flash memory forbidden in this context")); | |
1439 | break; | |
1440 | ||
1441 | case MEM_NONE: | |
1442 | return 0; | |
1443 | } | |
1444 | ||
1445 | /* region->hi == 0 means there's no upper bound. */ | |
1446 | if (memaddr + len < region->hi || region->hi == 0) | |
1447 | *reg_len = len; | |
1448 | else | |
1449 | *reg_len = region->hi - memaddr; | |
1450 | ||
1451 | return 1; | |
1452 | } | |
1453 | ||
9f713294 YQ |
1454 | /* Read memory from more than one valid target. A core file, for |
1455 | instance, could have some of memory but delegate other bits to | |
1456 | the target below it. So, we must manually try all targets. */ | |
1457 | ||
cc9f16aa | 1458 | enum target_xfer_status |
17fde6d0 | 1459 | raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf, |
9b409511 YQ |
1460 | const gdb_byte *writebuf, ULONGEST memaddr, LONGEST len, |
1461 | ULONGEST *xfered_len) | |
9f713294 | 1462 | { |
9b409511 | 1463 | enum target_xfer_status res; |
9f713294 YQ |
1464 | |
1465 | do | |
1466 | { | |
f6ac5f3d PA |
1467 | res = ops->xfer_partial (TARGET_OBJECT_MEMORY, NULL, |
1468 | readbuf, writebuf, memaddr, len, | |
1469 | xfered_len); | |
9b409511 | 1470 | if (res == TARGET_XFER_OK) |
9f713294 YQ |
1471 | break; |
1472 | ||
633785ff | 1473 | /* Stop if the target reports that the memory is not available. */ |
bc113b4e | 1474 | if (res == TARGET_XFER_UNAVAILABLE) |
633785ff MM |
1475 | break; |
1476 | ||
2735d421 | 1477 | /* Don't continue past targets which have all the memory. |
dda83cd7 | 1478 | At one time, this code was necessary to read data from |
2735d421 KB |
1479 | executables / shared libraries when data for the requested |
1480 | addresses weren't available in the core file. But now the | |
1481 | core target handles this case itself. */ | |
f6ac5f3d | 1482 | if (ops->has_all_memory ()) |
9f713294 YQ |
1483 | break; |
1484 | ||
b6a8c27b | 1485 | ops = ops->beneath (); |
9f713294 YQ |
1486 | } |
1487 | while (ops != NULL); | |
1488 | ||
0f26cec1 PA |
1489 | /* The cache works at the raw memory level. Make sure the cache |
1490 | gets updated with raw contents no matter what kind of memory | |
1491 | object was originally being written. Note we do write-through | |
1492 | first, so that if it fails, we don't write to the cache contents | |
1493 | that never made it to the target. */ | |
1494 | if (writebuf != NULL | |
d7e15655 | 1495 | && inferior_ptid != null_ptid |
0f26cec1 PA |
1496 | && target_dcache_init_p () |
1497 | && (stack_cache_enabled_p () || code_cache_enabled_p ())) | |
1498 | { | |
1499 | DCACHE *dcache = target_dcache_get (); | |
1500 | ||
1501 | /* Note that writing to an area of memory which wasn't present | |
1502 | in the cache doesn't cause it to be loaded in. */ | |
1503 | dcache_update (dcache, res, memaddr, writebuf, *xfered_len); | |
1504 | } | |
1505 | ||
9f713294 YQ |
1506 | return res; |
1507 | } | |
1508 | ||
7f79c47e DE |
1509 | /* Perform a partial memory transfer. |
1510 | For docs see target.h, to_xfer_partial. */ | |
cf7a04e8 | 1511 | |
9b409511 | 1512 | static enum target_xfer_status |
f0ba3972 | 1513 | memory_xfer_partial_1 (struct target_ops *ops, enum target_object object, |
17fde6d0 | 1514 | gdb_byte *readbuf, const gdb_byte *writebuf, ULONGEST memaddr, |
9b409511 | 1515 | ULONGEST len, ULONGEST *xfered_len) |
0779438d | 1516 | { |
9b409511 | 1517 | enum target_xfer_status res; |
0fec99e8 | 1518 | ULONGEST reg_len; |
cf7a04e8 | 1519 | struct mem_region *region; |
4e5d721f | 1520 | struct inferior *inf; |
cf7a04e8 | 1521 | |
07b82ea5 PA |
1522 | /* For accesses to unmapped overlay sections, read directly from |
1523 | files. Must do this first, as MEMADDR may need adjustment. */ | |
1524 | if (readbuf != NULL && overlay_debugging) | |
1525 | { | |
1526 | struct obj_section *section = find_pc_overlay (memaddr); | |
5d502164 | 1527 | |
07b82ea5 PA |
1528 | if (pc_in_unmapped_range (memaddr, section)) |
1529 | { | |
19cf757a | 1530 | const target_section_table *table = target_get_section_table (ops); |
07b82ea5 | 1531 | const char *section_name = section->the_bfd_section->name; |
5d502164 | 1532 | |
07b82ea5 | 1533 | memaddr = overlay_mapped_address (memaddr, section); |
e56cb451 KB |
1534 | |
1535 | auto match_cb = [=] (const struct target_section *s) | |
1536 | { | |
1537 | return (strcmp (section_name, s->the_bfd_section->name) == 0); | |
1538 | }; | |
1539 | ||
07b82ea5 | 1540 | return section_table_xfer_memory_partial (readbuf, writebuf, |
9b409511 | 1541 | memaddr, len, xfered_len, |
bb2a6777 | 1542 | *table, match_cb); |
07b82ea5 PA |
1543 | } |
1544 | } | |
1545 | ||
1546 | /* Try the executable files, if "trust-readonly-sections" is set. */ | |
cf7a04e8 DJ |
1547 | if (readbuf != NULL && trust_readonly) |
1548 | { | |
19cf757a AB |
1549 | const struct target_section *secp |
1550 | = target_section_by_addr (ops, memaddr); | |
cf7a04e8 | 1551 | if (secp != NULL |
fd361982 | 1552 | && (bfd_section_flags (secp->the_bfd_section) & SEC_READONLY)) |
07b82ea5 | 1553 | { |
19cf757a | 1554 | const target_section_table *table = target_get_section_table (ops); |
07b82ea5 | 1555 | return section_table_xfer_memory_partial (readbuf, writebuf, |
9b409511 | 1556 | memaddr, len, xfered_len, |
bb2a6777 | 1557 | *table); |
07b82ea5 | 1558 | } |
98646950 UW |
1559 | } |
1560 | ||
cf7a04e8 | 1561 | /* Try GDB's internal data cache. */ |
cf7a04e8 | 1562 | |
0fec99e8 PA |
1563 | if (!memory_xfer_check_region (readbuf, writebuf, memaddr, len, ®_len, |
1564 | ®ion)) | |
1565 | return TARGET_XFER_E_IO; | |
cf7a04e8 | 1566 | |
d7e15655 | 1567 | if (inferior_ptid != null_ptid) |
00431a78 | 1568 | inf = current_inferior (); |
6c95b8df PA |
1569 | else |
1570 | inf = NULL; | |
4e5d721f DE |
1571 | |
1572 | if (inf != NULL | |
0f26cec1 | 1573 | && readbuf != NULL |
2f4d8875 PA |
1574 | /* The dcache reads whole cache lines; that doesn't play well |
1575 | with reading from a trace buffer, because reading outside of | |
1576 | the collected memory range fails. */ | |
1577 | && get_traceframe_number () == -1 | |
4e5d721f | 1578 | && (region->attrib.cache |
29453a14 YQ |
1579 | || (stack_cache_enabled_p () && object == TARGET_OBJECT_STACK_MEMORY) |
1580 | || (code_cache_enabled_p () && object == TARGET_OBJECT_CODE_MEMORY))) | |
cf7a04e8 | 1581 | { |
2a2f9fe4 YQ |
1582 | DCACHE *dcache = target_dcache_get_or_init (); |
1583 | ||
0f26cec1 PA |
1584 | return dcache_read_memory_partial (ops, dcache, memaddr, readbuf, |
1585 | reg_len, xfered_len); | |
cf7a04e8 DJ |
1586 | } |
1587 | ||
1588 | /* If none of those methods found the memory we wanted, fall back | |
1589 | to a target partial transfer. Normally a single call to | |
1590 | to_xfer_partial is enough; if it doesn't recognize an object | |
1591 | it will call the to_xfer_partial of the next target down. | |
1592 | But for memory this won't do. Memory is the only target | |
9b409511 YQ |
1593 | object which can be read from more than one valid target. |
1594 | A core file, for instance, could have some of memory but | |
1595 | delegate other bits to the target below it. So, we must | |
1596 | manually try all targets. */ | |
1597 | ||
1598 | res = raw_memory_xfer_partial (ops, readbuf, writebuf, memaddr, reg_len, | |
1599 | xfered_len); | |
cf7a04e8 DJ |
1600 | |
1601 | /* If we still haven't got anything, return the last error. We | |
1602 | give up. */ | |
1603 | return res; | |
0779438d AC |
1604 | } |
1605 | ||
f0ba3972 PA |
1606 | /* Perform a partial memory transfer. For docs see target.h, |
1607 | to_xfer_partial. */ | |
1608 | ||
9b409511 | 1609 | static enum target_xfer_status |
f0ba3972 | 1610 | memory_xfer_partial (struct target_ops *ops, enum target_object object, |
9b409511 YQ |
1611 | gdb_byte *readbuf, const gdb_byte *writebuf, |
1612 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) | |
f0ba3972 | 1613 | { |
9b409511 | 1614 | enum target_xfer_status res; |
f0ba3972 PA |
1615 | |
1616 | /* Zero length requests are ok and require no work. */ | |
1617 | if (len == 0) | |
9b409511 | 1618 | return TARGET_XFER_EOF; |
f0ba3972 | 1619 | |
d88cb738 | 1620 | memaddr = gdbarch_remove_non_address_bits (target_gdbarch (), memaddr); |
a738ea1d | 1621 | |
f0ba3972 PA |
1622 | /* Fill in READBUF with breakpoint shadows, or WRITEBUF with |
1623 | breakpoint insns, thus hiding out from higher layers whether | |
1624 | there are software breakpoints inserted in the code stream. */ | |
1625 | if (readbuf != NULL) | |
1626 | { | |
9b409511 YQ |
1627 | res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len, |
1628 | xfered_len); | |
f0ba3972 | 1629 | |
9b409511 | 1630 | if (res == TARGET_XFER_OK && !show_memory_breakpoints) |
c63528fc | 1631 | breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, *xfered_len); |
f0ba3972 PA |
1632 | } |
1633 | else | |
1634 | { | |
67c059c2 AB |
1635 | /* A large write request is likely to be partially satisfied |
1636 | by memory_xfer_partial_1. We will continually malloc | |
1637 | and free a copy of the entire write request for breakpoint | |
1638 | shadow handling even though we only end up writing a small | |
09c98b44 DB |
1639 | subset of it. Cap writes to a limit specified by the target |
1640 | to mitigate this. */ | |
f6ac5f3d | 1641 | len = std::min (ops->get_memory_xfer_limit (), len); |
67c059c2 | 1642 | |
26fcd5d7 TT |
1643 | gdb::byte_vector buf (writebuf, writebuf + len); |
1644 | breakpoint_xfer_memory (NULL, buf.data (), writebuf, memaddr, len); | |
1645 | res = memory_xfer_partial_1 (ops, object, NULL, buf.data (), memaddr, len, | |
9b409511 | 1646 | xfered_len); |
f0ba3972 PA |
1647 | } |
1648 | ||
1649 | return res; | |
1650 | } | |
1651 | ||
cb85b21b TT |
1652 | scoped_restore_tmpl<int> |
1653 | make_scoped_restore_show_memory_breakpoints (int show) | |
8defab1a | 1654 | { |
cb85b21b | 1655 | return make_scoped_restore (&show_memory_breakpoints, show); |
8defab1a DJ |
1656 | } |
1657 | ||
7f79c47e DE |
1658 | /* For docs see target.h, to_xfer_partial. */ |
1659 | ||
9b409511 | 1660 | enum target_xfer_status |
27394598 AC |
1661 | target_xfer_partial (struct target_ops *ops, |
1662 | enum target_object object, const char *annex, | |
4ac248ca | 1663 | gdb_byte *readbuf, const gdb_byte *writebuf, |
9b409511 YQ |
1664 | ULONGEST offset, ULONGEST len, |
1665 | ULONGEST *xfered_len) | |
27394598 | 1666 | { |
9b409511 | 1667 | enum target_xfer_status retval; |
27394598 | 1668 | |
ce6d0892 YQ |
1669 | /* Transfer is done when LEN is zero. */ |
1670 | if (len == 0) | |
9b409511 | 1671 | return TARGET_XFER_EOF; |
ce6d0892 | 1672 | |
d914c394 SS |
1673 | if (writebuf && !may_write_memory) |
1674 | error (_("Writing to memory is not allowed (addr %s, len %s)"), | |
1675 | core_addr_to_string_nz (offset), plongest (len)); | |
1676 | ||
9b409511 YQ |
1677 | *xfered_len = 0; |
1678 | ||
cf7a04e8 DJ |
1679 | /* If this is a memory transfer, let the memory-specific code |
1680 | have a look at it instead. Memory transfers are more | |
1681 | complicated. */ | |
29453a14 YQ |
1682 | if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY |
1683 | || object == TARGET_OBJECT_CODE_MEMORY) | |
4e5d721f | 1684 | retval = memory_xfer_partial (ops, object, readbuf, |
9b409511 | 1685 | writebuf, offset, len, xfered_len); |
9f713294 | 1686 | else if (object == TARGET_OBJECT_RAW_MEMORY) |
cf7a04e8 | 1687 | { |
0fec99e8 PA |
1688 | /* Skip/avoid accessing the target if the memory region |
1689 | attributes block the access. Check this here instead of in | |
1690 | raw_memory_xfer_partial as otherwise we'd end up checking | |
1691 | this twice in the case of the memory_xfer_partial path is | |
1692 | taken; once before checking the dcache, and another in the | |
1693 | tail call to raw_memory_xfer_partial. */ | |
1694 | if (!memory_xfer_check_region (readbuf, writebuf, offset, len, &len, | |
1695 | NULL)) | |
1696 | return TARGET_XFER_E_IO; | |
1697 | ||
9f713294 | 1698 | /* Request the normal memory object from other layers. */ |
9b409511 YQ |
1699 | retval = raw_memory_xfer_partial (ops, readbuf, writebuf, offset, len, |
1700 | xfered_len); | |
cf7a04e8 | 1701 | } |
9f713294 | 1702 | else |
f6ac5f3d PA |
1703 | retval = ops->xfer_partial (object, annex, readbuf, |
1704 | writebuf, offset, len, xfered_len); | |
cf7a04e8 | 1705 | |
27394598 AC |
1706 | if (targetdebug) |
1707 | { | |
1708 | const unsigned char *myaddr = NULL; | |
1709 | ||
6cb06a8c TT |
1710 | gdb_printf (gdb_stdlog, |
1711 | "%s:target_xfer_partial " | |
1712 | "(%d, %s, %s, %s, %s, %s) = %d, %s", | |
1713 | ops->shortname (), | |
1714 | (int) object, | |
1715 | (annex ? annex : "(null)"), | |
1716 | host_address_to_string (readbuf), | |
1717 | host_address_to_string (writebuf), | |
1718 | core_addr_to_string_nz (offset), | |
1719 | pulongest (len), retval, | |
1720 | pulongest (*xfered_len)); | |
27394598 AC |
1721 | |
1722 | if (readbuf) | |
1723 | myaddr = readbuf; | |
1724 | if (writebuf) | |
1725 | myaddr = writebuf; | |
9b409511 | 1726 | if (retval == TARGET_XFER_OK && myaddr != NULL) |
27394598 AC |
1727 | { |
1728 | int i; | |
2bc416ba | 1729 | |
0426ad51 | 1730 | gdb_puts (", bytes =", gdb_stdlog); |
9b409511 | 1731 | for (i = 0; i < *xfered_len; i++) |
27394598 | 1732 | { |
53b71562 | 1733 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1734 | { |
1735 | if (targetdebug < 2 && i > 0) | |
1736 | { | |
6cb06a8c | 1737 | gdb_printf (gdb_stdlog, " ..."); |
27394598 AC |
1738 | break; |
1739 | } | |
6cb06a8c | 1740 | gdb_printf (gdb_stdlog, "\n"); |
27394598 | 1741 | } |
2bc416ba | 1742 | |
6cb06a8c | 1743 | gdb_printf (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
27394598 AC |
1744 | } |
1745 | } | |
2bc416ba | 1746 | |
a11ac3b3 | 1747 | gdb_putc ('\n', gdb_stdlog); |
27394598 | 1748 | } |
9b409511 YQ |
1749 | |
1750 | /* Check implementations of to_xfer_partial update *XFERED_LEN | |
1751 | properly. Do assertion after printing debug messages, so that we | |
1752 | can find more clues on assertion failure from debugging messages. */ | |
bc113b4e | 1753 | if (retval == TARGET_XFER_OK || retval == TARGET_XFER_UNAVAILABLE) |
9b409511 YQ |
1754 | gdb_assert (*xfered_len > 0); |
1755 | ||
27394598 AC |
1756 | return retval; |
1757 | } | |
1758 | ||
578d3588 PA |
1759 | /* Read LEN bytes of target memory at address MEMADDR, placing the |
1760 | results in GDB's memory at MYADDR. Returns either 0 for success or | |
d09f2c3f | 1761 | -1 if any error occurs. |
c906108c SS |
1762 | |
1763 | If an error occurs, no guarantee is made about the contents of the data at | |
1764 | MYADDR. In particular, the caller should not depend upon partial reads | |
1765 | filling the buffer with good data. There is no way for the caller to know | |
1766 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 | 1767 | deal with partial reads should call target_read (which will retry until |
c378eb4e | 1768 | it makes no progress, and then return how much was transferred). */ |
c906108c SS |
1769 | |
1770 | int | |
1b162304 | 1771 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
c906108c | 1772 | { |
328d42d8 SM |
1773 | if (target_read (current_inferior ()->top_target (), |
1774 | TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1775 | myaddr, memaddr, len) == len) |
1776 | return 0; | |
0779438d | 1777 | else |
d09f2c3f | 1778 | return -1; |
c906108c SS |
1779 | } |
1780 | ||
721ec300 GB |
1781 | /* See target/target.h. */ |
1782 | ||
1783 | int | |
1784 | target_read_uint32 (CORE_ADDR memaddr, uint32_t *result) | |
1785 | { | |
1786 | gdb_byte buf[4]; | |
1787 | int r; | |
1788 | ||
1789 | r = target_read_memory (memaddr, buf, sizeof buf); | |
1790 | if (r != 0) | |
1791 | return r; | |
1792 | *result = extract_unsigned_integer (buf, sizeof buf, | |
1793 | gdbarch_byte_order (target_gdbarch ())); | |
1794 | return 0; | |
1795 | } | |
1796 | ||
aee4bf85 PA |
1797 | /* Like target_read_memory, but specify explicitly that this is a read |
1798 | from the target's raw memory. That is, this read bypasses the | |
1799 | dcache, breakpoint shadowing, etc. */ | |
1800 | ||
1801 | int | |
1802 | target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1803 | { | |
328d42d8 SM |
1804 | if (target_read (current_inferior ()->top_target (), |
1805 | TARGET_OBJECT_RAW_MEMORY, NULL, | |
aee4bf85 PA |
1806 | myaddr, memaddr, len) == len) |
1807 | return 0; | |
1808 | else | |
d09f2c3f | 1809 | return -1; |
aee4bf85 PA |
1810 | } |
1811 | ||
4e5d721f DE |
1812 | /* Like target_read_memory, but specify explicitly that this is a read from |
1813 | the target's stack. This may trigger different cache behavior. */ | |
1814 | ||
1815 | int | |
45aa4659 | 1816 | target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
4e5d721f | 1817 | { |
328d42d8 SM |
1818 | if (target_read (current_inferior ()->top_target (), |
1819 | TARGET_OBJECT_STACK_MEMORY, NULL, | |
4e5d721f DE |
1820 | myaddr, memaddr, len) == len) |
1821 | return 0; | |
1822 | else | |
d09f2c3f | 1823 | return -1; |
4e5d721f DE |
1824 | } |
1825 | ||
29453a14 YQ |
1826 | /* Like target_read_memory, but specify explicitly that this is a read from |
1827 | the target's code. This may trigger different cache behavior. */ | |
1828 | ||
1829 | int | |
1830 | target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1831 | { | |
328d42d8 SM |
1832 | if (target_read (current_inferior ()->top_target (), |
1833 | TARGET_OBJECT_CODE_MEMORY, NULL, | |
29453a14 YQ |
1834 | myaddr, memaddr, len) == len) |
1835 | return 0; | |
1836 | else | |
d09f2c3f | 1837 | return -1; |
29453a14 YQ |
1838 | } |
1839 | ||
7f79c47e | 1840 | /* Write LEN bytes from MYADDR to target memory at address MEMADDR. |
d09f2c3f PA |
1841 | Returns either 0 for success or -1 if any error occurs. If an |
1842 | error occurs, no guarantee is made about how much data got written. | |
1843 | Callers that can deal with partial writes should call | |
1844 | target_write. */ | |
7f79c47e | 1845 | |
c906108c | 1846 | int |
45aa4659 | 1847 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
c906108c | 1848 | { |
328d42d8 SM |
1849 | if (target_write (current_inferior ()->top_target (), |
1850 | TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1851 | myaddr, memaddr, len) == len) |
1852 | return 0; | |
0779438d | 1853 | else |
d09f2c3f | 1854 | return -1; |
c906108c | 1855 | } |
c5aa993b | 1856 | |
f0ba3972 | 1857 | /* Write LEN bytes from MYADDR to target raw memory at address |
d09f2c3f PA |
1858 | MEMADDR. Returns either 0 for success or -1 if any error occurs. |
1859 | If an error occurs, no guarantee is made about how much data got | |
1860 | written. Callers that can deal with partial writes should call | |
1861 | target_write. */ | |
f0ba3972 PA |
1862 | |
1863 | int | |
45aa4659 | 1864 | target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
f0ba3972 | 1865 | { |
328d42d8 SM |
1866 | if (target_write (current_inferior ()->top_target (), |
1867 | TARGET_OBJECT_RAW_MEMORY, NULL, | |
f0ba3972 PA |
1868 | myaddr, memaddr, len) == len) |
1869 | return 0; | |
1870 | else | |
d09f2c3f | 1871 | return -1; |
f0ba3972 PA |
1872 | } |
1873 | ||
fd79ecee DJ |
1874 | /* Fetch the target's memory map. */ |
1875 | ||
a664f67e | 1876 | std::vector<mem_region> |
fd79ecee DJ |
1877 | target_memory_map (void) |
1878 | { | |
328d42d8 SM |
1879 | target_ops *target = current_inferior ()->top_target (); |
1880 | std::vector<mem_region> result = target->memory_map (); | |
a664f67e SM |
1881 | if (result.empty ()) |
1882 | return result; | |
fd79ecee | 1883 | |
a664f67e | 1884 | std::sort (result.begin (), result.end ()); |
fd79ecee DJ |
1885 | |
1886 | /* Check that regions do not overlap. Simultaneously assign | |
1887 | a numbering for the "mem" commands to use to refer to | |
1888 | each region. */ | |
a664f67e SM |
1889 | mem_region *last_one = NULL; |
1890 | for (size_t ix = 0; ix < result.size (); ix++) | |
fd79ecee | 1891 | { |
a664f67e | 1892 | mem_region *this_one = &result[ix]; |
fd79ecee DJ |
1893 | this_one->number = ix; |
1894 | ||
a664f67e | 1895 | if (last_one != NULL && last_one->hi > this_one->lo) |
fd79ecee DJ |
1896 | { |
1897 | warning (_("Overlapping regions in memory map: ignoring")); | |
a664f67e | 1898 | return std::vector<mem_region> (); |
fd79ecee | 1899 | } |
a664f67e | 1900 | |
fd79ecee DJ |
1901 | last_one = this_one; |
1902 | } | |
1903 | ||
1904 | return result; | |
1905 | } | |
1906 | ||
a76d924d DJ |
1907 | void |
1908 | target_flash_erase (ULONGEST address, LONGEST length) | |
1909 | { | |
328d42d8 | 1910 | current_inferior ()->top_target ()->flash_erase (address, length); |
a76d924d DJ |
1911 | } |
1912 | ||
1913 | void | |
1914 | target_flash_done (void) | |
1915 | { | |
328d42d8 | 1916 | current_inferior ()->top_target ()->flash_done (); |
a76d924d DJ |
1917 | } |
1918 | ||
920d2a44 AC |
1919 | static void |
1920 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1921 | struct cmd_list_element *c, const char *value) | |
1922 | { | |
6cb06a8c TT |
1923 | gdb_printf (file, |
1924 | _("Mode for reading from readonly sections is %s.\n"), | |
1925 | value); | |
920d2a44 | 1926 | } |
3a11626d | 1927 | |
7f79c47e | 1928 | /* Target vector read/write partial wrapper functions. */ |
0088c768 | 1929 | |
9b409511 | 1930 | static enum target_xfer_status |
1e3ff5ad AC |
1931 | target_read_partial (struct target_ops *ops, |
1932 | enum target_object object, | |
1b0ba102 | 1933 | const char *annex, gdb_byte *buf, |
9b409511 YQ |
1934 | ULONGEST offset, ULONGEST len, |
1935 | ULONGEST *xfered_len) | |
1e3ff5ad | 1936 | { |
9b409511 YQ |
1937 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len, |
1938 | xfered_len); | |
1e3ff5ad AC |
1939 | } |
1940 | ||
8a55ffb0 | 1941 | static enum target_xfer_status |
1e3ff5ad AC |
1942 | target_write_partial (struct target_ops *ops, |
1943 | enum target_object object, | |
1b0ba102 | 1944 | const char *annex, const gdb_byte *buf, |
9b409511 | 1945 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len) |
1e3ff5ad | 1946 | { |
9b409511 YQ |
1947 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len, |
1948 | xfered_len); | |
1e3ff5ad AC |
1949 | } |
1950 | ||
1951 | /* Wrappers to perform the full transfer. */ | |
7f79c47e DE |
1952 | |
1953 | /* For docs on target_read see target.h. */ | |
1954 | ||
1e3ff5ad AC |
1955 | LONGEST |
1956 | target_read (struct target_ops *ops, | |
1957 | enum target_object object, | |
1b0ba102 | 1958 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1959 | ULONGEST offset, LONGEST len) |
1960 | { | |
279a6fed | 1961 | LONGEST xfered_total = 0; |
d309493c SM |
1962 | int unit_size = 1; |
1963 | ||
1964 | /* If we are reading from a memory object, find the length of an addressable | |
1965 | unit for that architecture. */ | |
1966 | if (object == TARGET_OBJECT_MEMORY | |
1967 | || object == TARGET_OBJECT_STACK_MEMORY | |
1968 | || object == TARGET_OBJECT_CODE_MEMORY | |
1969 | || object == TARGET_OBJECT_RAW_MEMORY) | |
1970 | unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); | |
5d502164 | 1971 | |
279a6fed | 1972 | while (xfered_total < len) |
1e3ff5ad | 1973 | { |
279a6fed | 1974 | ULONGEST xfered_partial; |
9b409511 YQ |
1975 | enum target_xfer_status status; |
1976 | ||
1977 | status = target_read_partial (ops, object, annex, | |
d309493c | 1978 | buf + xfered_total * unit_size, |
279a6fed SM |
1979 | offset + xfered_total, len - xfered_total, |
1980 | &xfered_partial); | |
5d502164 | 1981 | |
1e3ff5ad | 1982 | /* Call an observer, notifying them of the xfer progress? */ |
9b409511 | 1983 | if (status == TARGET_XFER_EOF) |
279a6fed | 1984 | return xfered_total; |
9b409511 YQ |
1985 | else if (status == TARGET_XFER_OK) |
1986 | { | |
279a6fed | 1987 | xfered_total += xfered_partial; |
9b409511 YQ |
1988 | QUIT; |
1989 | } | |
1990 | else | |
279a6fed | 1991 | return TARGET_XFER_E_IO; |
9b409511 | 1992 | |
1e3ff5ad AC |
1993 | } |
1994 | return len; | |
1995 | } | |
1996 | ||
f1a507a1 JB |
1997 | /* Assuming that the entire [begin, end) range of memory cannot be |
1998 | read, try to read whatever subrange is possible to read. | |
1999 | ||
2000 | The function returns, in RESULT, either zero or one memory block. | |
2001 | If there's a readable subrange at the beginning, it is completely | |
2002 | read and returned. Any further readable subrange will not be read. | |
2003 | Otherwise, if there's a readable subrange at the end, it will be | |
2004 | completely read and returned. Any readable subranges before it | |
2005 | (obviously, not starting at the beginning), will be ignored. In | |
2006 | other cases -- either no readable subrange, or readable subrange(s) | |
2007 | that is neither at the beginning, or end, nothing is returned. | |
2008 | ||
2009 | The purpose of this function is to handle a read across a boundary | |
2010 | of accessible memory in a case when memory map is not available. | |
2011 | The above restrictions are fine for this case, but will give | |
2012 | incorrect results if the memory is 'patchy'. However, supporting | |
2013 | 'patchy' memory would require trying to read every single byte, | |
2014 | and it seems unacceptable solution. Explicit memory map is | |
2015 | recommended for this case -- and target_read_memory_robust will | |
2016 | take care of reading multiple ranges then. */ | |
8dedea02 VP |
2017 | |
2018 | static void | |
3e43a32a | 2019 | read_whatever_is_readable (struct target_ops *ops, |
279a6fed | 2020 | const ULONGEST begin, const ULONGEST end, |
d309493c | 2021 | int unit_size, |
386c8614 | 2022 | std::vector<memory_read_result> *result) |
d5086790 | 2023 | { |
8dedea02 VP |
2024 | ULONGEST current_begin = begin; |
2025 | ULONGEST current_end = end; | |
2026 | int forward; | |
9b409511 | 2027 | ULONGEST xfered_len; |
8dedea02 VP |
2028 | |
2029 | /* If we previously failed to read 1 byte, nothing can be done here. */ | |
2030 | if (end - begin <= 1) | |
386c8614 TT |
2031 | return; |
2032 | ||
2033 | gdb::unique_xmalloc_ptr<gdb_byte> buf ((gdb_byte *) xmalloc (end - begin)); | |
8dedea02 VP |
2034 | |
2035 | /* Check that either first or the last byte is readable, and give up | |
c378eb4e | 2036 | if not. This heuristic is meant to permit reading accessible memory |
8dedea02 VP |
2037 | at the boundary of accessible region. */ |
2038 | if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
386c8614 | 2039 | buf.get (), begin, 1, &xfered_len) == TARGET_XFER_OK) |
8dedea02 VP |
2040 | { |
2041 | forward = 1; | |
2042 | ++current_begin; | |
2043 | } | |
2044 | else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
386c8614 | 2045 | buf.get () + (end - begin) - 1, end - 1, 1, |
9b409511 | 2046 | &xfered_len) == TARGET_XFER_OK) |
8dedea02 VP |
2047 | { |
2048 | forward = 0; | |
2049 | --current_end; | |
2050 | } | |
2051 | else | |
386c8614 | 2052 | return; |
8dedea02 VP |
2053 | |
2054 | /* Loop invariant is that the [current_begin, current_end) was previously | |
2055 | found to be not readable as a whole. | |
2056 | ||
2057 | Note loop condition -- if the range has 1 byte, we can't divide the range | |
2058 | so there's no point trying further. */ | |
2059 | while (current_end - current_begin > 1) | |
2060 | { | |
2061 | ULONGEST first_half_begin, first_half_end; | |
2062 | ULONGEST second_half_begin, second_half_end; | |
2063 | LONGEST xfer; | |
279a6fed | 2064 | ULONGEST middle = current_begin + (current_end - current_begin) / 2; |
f1a507a1 | 2065 | |
8dedea02 VP |
2066 | if (forward) |
2067 | { | |
2068 | first_half_begin = current_begin; | |
2069 | first_half_end = middle; | |
2070 | second_half_begin = middle; | |
2071 | second_half_end = current_end; | |
2072 | } | |
2073 | else | |
2074 | { | |
2075 | first_half_begin = middle; | |
2076 | first_half_end = current_end; | |
2077 | second_half_begin = current_begin; | |
2078 | second_half_end = middle; | |
2079 | } | |
2080 | ||
2081 | xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
386c8614 | 2082 | buf.get () + (first_half_begin - begin) * unit_size, |
8dedea02 VP |
2083 | first_half_begin, |
2084 | first_half_end - first_half_begin); | |
2085 | ||
2086 | if (xfer == first_half_end - first_half_begin) | |
2087 | { | |
c378eb4e | 2088 | /* This half reads up fine. So, the error must be in the |
3e43a32a | 2089 | other half. */ |
8dedea02 VP |
2090 | current_begin = second_half_begin; |
2091 | current_end = second_half_end; | |
2092 | } | |
2093 | else | |
2094 | { | |
c378eb4e | 2095 | /* This half is not readable. Because we've tried one byte, we |
279a6fed | 2096 | know some part of this half if actually readable. Go to the next |
8dedea02 VP |
2097 | iteration to divide again and try to read. |
2098 | ||
2099 | We don't handle the other half, because this function only tries | |
2100 | to read a single readable subrange. */ | |
2101 | current_begin = first_half_begin; | |
2102 | current_end = first_half_end; | |
2103 | } | |
2104 | } | |
2105 | ||
2106 | if (forward) | |
2107 | { | |
2108 | /* The [begin, current_begin) range has been read. */ | |
386c8614 | 2109 | result->emplace_back (begin, current_end, std::move (buf)); |
8dedea02 VP |
2110 | } |
2111 | else | |
2112 | { | |
2113 | /* The [current_end, end) range has been read. */ | |
279a6fed | 2114 | LONGEST region_len = end - current_end; |
f1a507a1 | 2115 | |
386c8614 TT |
2116 | gdb::unique_xmalloc_ptr<gdb_byte> data |
2117 | ((gdb_byte *) xmalloc (region_len * unit_size)); | |
2118 | memcpy (data.get (), buf.get () + (current_end - begin) * unit_size, | |
d309493c | 2119 | region_len * unit_size); |
386c8614 | 2120 | result->emplace_back (current_end, end, std::move (data)); |
8dedea02 | 2121 | } |
8dedea02 VP |
2122 | } |
2123 | ||
386c8614 | 2124 | std::vector<memory_read_result> |
279a6fed SM |
2125 | read_memory_robust (struct target_ops *ops, |
2126 | const ULONGEST offset, const LONGEST len) | |
8dedea02 | 2127 | { |
386c8614 | 2128 | std::vector<memory_read_result> result; |
d309493c | 2129 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
8dedea02 | 2130 | |
279a6fed SM |
2131 | LONGEST xfered_total = 0; |
2132 | while (xfered_total < len) | |
d5086790 | 2133 | { |
279a6fed SM |
2134 | struct mem_region *region = lookup_mem_region (offset + xfered_total); |
2135 | LONGEST region_len; | |
5d502164 | 2136 | |
8dedea02 VP |
2137 | /* If there is no explicit region, a fake one should be created. */ |
2138 | gdb_assert (region); | |
2139 | ||
2140 | if (region->hi == 0) | |
279a6fed | 2141 | region_len = len - xfered_total; |
8dedea02 | 2142 | else |
279a6fed | 2143 | region_len = region->hi - offset; |
8dedea02 VP |
2144 | |
2145 | if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO) | |
d5086790 | 2146 | { |
c378eb4e | 2147 | /* Cannot read this region. Note that we can end up here only |
8dedea02 VP |
2148 | if the region is explicitly marked inaccessible, or |
2149 | 'inaccessible-by-default' is in effect. */ | |
279a6fed | 2150 | xfered_total += region_len; |
8dedea02 VP |
2151 | } |
2152 | else | |
2153 | { | |
325fac50 | 2154 | LONGEST to_read = std::min (len - xfered_total, region_len); |
386c8614 TT |
2155 | gdb::unique_xmalloc_ptr<gdb_byte> buffer |
2156 | ((gdb_byte *) xmalloc (to_read * unit_size)); | |
8dedea02 | 2157 | |
279a6fed | 2158 | LONGEST xfered_partial = |
386c8614 | 2159 | target_read (ops, TARGET_OBJECT_MEMORY, NULL, buffer.get (), |
279a6fed | 2160 | offset + xfered_total, to_read); |
8dedea02 | 2161 | /* Call an observer, notifying them of the xfer progress? */ |
279a6fed | 2162 | if (xfered_partial <= 0) |
d5086790 | 2163 | { |
c378eb4e | 2164 | /* Got an error reading full chunk. See if maybe we can read |
8dedea02 | 2165 | some subrange. */ |
e084c964 DB |
2166 | read_whatever_is_readable (ops, offset + xfered_total, |
2167 | offset + xfered_total + to_read, | |
2168 | unit_size, &result); | |
279a6fed | 2169 | xfered_total += to_read; |
d5086790 | 2170 | } |
8dedea02 VP |
2171 | else |
2172 | { | |
386c8614 TT |
2173 | result.emplace_back (offset + xfered_total, |
2174 | offset + xfered_total + xfered_partial, | |
2175 | std::move (buffer)); | |
279a6fed | 2176 | xfered_total += xfered_partial; |
8dedea02 VP |
2177 | } |
2178 | QUIT; | |
d5086790 | 2179 | } |
d5086790 | 2180 | } |
9d78f827 | 2181 | |
8dedea02 | 2182 | return result; |
d5086790 VP |
2183 | } |
2184 | ||
8dedea02 | 2185 | |
cf7a04e8 DJ |
2186 | /* An alternative to target_write with progress callbacks. */ |
2187 | ||
1e3ff5ad | 2188 | LONGEST |
cf7a04e8 DJ |
2189 | target_write_with_progress (struct target_ops *ops, |
2190 | enum target_object object, | |
2191 | const char *annex, const gdb_byte *buf, | |
2192 | ULONGEST offset, LONGEST len, | |
2193 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad | 2194 | { |
279a6fed | 2195 | LONGEST xfered_total = 0; |
d309493c SM |
2196 | int unit_size = 1; |
2197 | ||
2198 | /* If we are writing to a memory object, find the length of an addressable | |
2199 | unit for that architecture. */ | |
2200 | if (object == TARGET_OBJECT_MEMORY | |
2201 | || object == TARGET_OBJECT_STACK_MEMORY | |
2202 | || object == TARGET_OBJECT_CODE_MEMORY | |
2203 | || object == TARGET_OBJECT_RAW_MEMORY) | |
2204 | unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); | |
a76d924d DJ |
2205 | |
2206 | /* Give the progress callback a chance to set up. */ | |
2207 | if (progress) | |
2208 | (*progress) (0, baton); | |
2209 | ||
279a6fed | 2210 | while (xfered_total < len) |
1e3ff5ad | 2211 | { |
279a6fed | 2212 | ULONGEST xfered_partial; |
9b409511 YQ |
2213 | enum target_xfer_status status; |
2214 | ||
2215 | status = target_write_partial (ops, object, annex, | |
d309493c | 2216 | buf + xfered_total * unit_size, |
279a6fed SM |
2217 | offset + xfered_total, len - xfered_total, |
2218 | &xfered_partial); | |
cf7a04e8 | 2219 | |
5c328c05 | 2220 | if (status != TARGET_XFER_OK) |
279a6fed | 2221 | return status == TARGET_XFER_EOF ? xfered_total : TARGET_XFER_E_IO; |
cf7a04e8 DJ |
2222 | |
2223 | if (progress) | |
279a6fed | 2224 | (*progress) (xfered_partial, baton); |
cf7a04e8 | 2225 | |
279a6fed | 2226 | xfered_total += xfered_partial; |
1e3ff5ad AC |
2227 | QUIT; |
2228 | } | |
2229 | return len; | |
2230 | } | |
2231 | ||
7f79c47e DE |
2232 | /* For docs on target_write see target.h. */ |
2233 | ||
cf7a04e8 DJ |
2234 | LONGEST |
2235 | target_write (struct target_ops *ops, | |
2236 | enum target_object object, | |
2237 | const char *annex, const gdb_byte *buf, | |
2238 | ULONGEST offset, LONGEST len) | |
2239 | { | |
2240 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
2241 | NULL, NULL); | |
2242 | } | |
2243 | ||
9018be22 SM |
2244 | /* Help for target_read_alloc and target_read_stralloc. See their comments |
2245 | for details. */ | |
13547ab6 | 2246 | |
9018be22 SM |
2247 | template <typename T> |
2248 | gdb::optional<gdb::def_vector<T>> | |
159f81f3 | 2249 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, |
9018be22 | 2250 | const char *annex) |
13547ab6 | 2251 | { |
9018be22 SM |
2252 | gdb::def_vector<T> buf; |
2253 | size_t buf_pos = 0; | |
2254 | const int chunk = 4096; | |
13547ab6 DJ |
2255 | |
2256 | /* This function does not have a length parameter; it reads the | |
2257 | entire OBJECT). Also, it doesn't support objects fetched partly | |
2258 | from one target and partly from another (in a different stratum, | |
2259 | e.g. a core file and an executable). Both reasons make it | |
2260 | unsuitable for reading memory. */ | |
2261 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
2262 | ||
2263 | /* Start by reading up to 4K at a time. The target will throttle | |
2264 | this number down if necessary. */ | |
13547ab6 DJ |
2265 | while (1) |
2266 | { | |
9b409511 YQ |
2267 | ULONGEST xfered_len; |
2268 | enum target_xfer_status status; | |
2269 | ||
9018be22 SM |
2270 | buf.resize (buf_pos + chunk); |
2271 | ||
2272 | status = target_read_partial (ops, object, annex, | |
2273 | (gdb_byte *) &buf[buf_pos], | |
2274 | buf_pos, chunk, | |
9b409511 YQ |
2275 | &xfered_len); |
2276 | ||
2277 | if (status == TARGET_XFER_EOF) | |
13547ab6 DJ |
2278 | { |
2279 | /* Read all there was. */ | |
9018be22 SM |
2280 | buf.resize (buf_pos); |
2281 | return buf; | |
13547ab6 | 2282 | } |
9b409511 YQ |
2283 | else if (status != TARGET_XFER_OK) |
2284 | { | |
2285 | /* An error occurred. */ | |
9018be22 | 2286 | return {}; |
9b409511 | 2287 | } |
13547ab6 | 2288 | |
9b409511 | 2289 | buf_pos += xfered_len; |
13547ab6 | 2290 | |
13547ab6 DJ |
2291 | QUIT; |
2292 | } | |
2293 | } | |
2294 | ||
9018be22 | 2295 | /* See target.h */ |
159f81f3 | 2296 | |
9018be22 | 2297 | gdb::optional<gdb::byte_vector> |
159f81f3 | 2298 | target_read_alloc (struct target_ops *ops, enum target_object object, |
9018be22 | 2299 | const char *annex) |
159f81f3 | 2300 | { |
9018be22 | 2301 | return target_read_alloc_1<gdb_byte> (ops, object, annex); |
159f81f3 DJ |
2302 | } |
2303 | ||
b7b030ad | 2304 | /* See target.h. */ |
159f81f3 | 2305 | |
9018be22 | 2306 | gdb::optional<gdb::char_vector> |
159f81f3 DJ |
2307 | target_read_stralloc (struct target_ops *ops, enum target_object object, |
2308 | const char *annex) | |
2309 | { | |
9018be22 SM |
2310 | gdb::optional<gdb::char_vector> buf |
2311 | = target_read_alloc_1<char> (ops, object, annex); | |
159f81f3 | 2312 | |
9018be22 SM |
2313 | if (!buf) |
2314 | return {}; | |
159f81f3 | 2315 | |
d00a27c5 | 2316 | if (buf->empty () || buf->back () != '\0') |
9018be22 | 2317 | buf->push_back ('\0'); |
7313baad UW |
2318 | |
2319 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
9018be22 SM |
2320 | for (auto it = std::find (buf->begin (), buf->end (), '\0'); |
2321 | it != buf->end (); it++) | |
2322 | if (*it != '\0') | |
7313baad UW |
2323 | { |
2324 | warning (_("target object %d, annex %s, " | |
2325 | "contained unexpected null characters"), | |
2326 | (int) object, annex ? annex : "(none)"); | |
2327 | break; | |
2328 | } | |
159f81f3 | 2329 | |
9018be22 | 2330 | return buf; |
159f81f3 DJ |
2331 | } |
2332 | ||
b6591e8b AC |
2333 | /* Memory transfer methods. */ |
2334 | ||
2335 | void | |
1b0ba102 | 2336 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
2337 | LONGEST len) |
2338 | { | |
07b82ea5 PA |
2339 | /* This method is used to read from an alternate, non-current |
2340 | target. This read must bypass the overlay support (as symbols | |
2341 | don't match this target), and GDB's internal cache (wrong cache | |
2342 | for this target). */ | |
2343 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) | |
b6591e8b | 2344 | != len) |
578d3588 | 2345 | memory_error (TARGET_XFER_E_IO, addr); |
b6591e8b AC |
2346 | } |
2347 | ||
2348 | ULONGEST | |
5d502164 MS |
2349 | get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr, |
2350 | int len, enum bfd_endian byte_order) | |
b6591e8b | 2351 | { |
f6519ebc | 2352 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
2353 | |
2354 | gdb_assert (len <= sizeof (buf)); | |
2355 | get_target_memory (ops, addr, buf, len); | |
e17a4113 | 2356 | return extract_unsigned_integer (buf, len, byte_order); |
b6591e8b AC |
2357 | } |
2358 | ||
3db08215 MM |
2359 | /* See target.h. */ |
2360 | ||
d914c394 SS |
2361 | int |
2362 | target_insert_breakpoint (struct gdbarch *gdbarch, | |
2363 | struct bp_target_info *bp_tgt) | |
2364 | { | |
2365 | if (!may_insert_breakpoints) | |
2366 | { | |
2367 | warning (_("May not insert breakpoints")); | |
2368 | return 1; | |
2369 | } | |
2370 | ||
328d42d8 SM |
2371 | target_ops *target = current_inferior ()->top_target (); |
2372 | ||
2373 | return target->insert_breakpoint (gdbarch, bp_tgt); | |
d914c394 SS |
2374 | } |
2375 | ||
3db08215 MM |
2376 | /* See target.h. */ |
2377 | ||
d914c394 | 2378 | int |
6b84065d | 2379 | target_remove_breakpoint (struct gdbarch *gdbarch, |
73971819 PA |
2380 | struct bp_target_info *bp_tgt, |
2381 | enum remove_bp_reason reason) | |
d914c394 SS |
2382 | { |
2383 | /* This is kind of a weird case to handle, but the permission might | |
2384 | have been changed after breakpoints were inserted - in which case | |
2385 | we should just take the user literally and assume that any | |
2386 | breakpoints should be left in place. */ | |
2387 | if (!may_insert_breakpoints) | |
2388 | { | |
2389 | warning (_("May not remove breakpoints")); | |
2390 | return 1; | |
2391 | } | |
2392 | ||
328d42d8 SM |
2393 | target_ops *target = current_inferior ()->top_target (); |
2394 | ||
2395 | return target->remove_breakpoint (gdbarch, bp_tgt, reason); | |
d914c394 SS |
2396 | } |
2397 | ||
c906108c | 2398 | static void |
1d12d88f | 2399 | info_target_command (const char *args, int from_tty) |
c906108c | 2400 | { |
c906108c | 2401 | int has_all_mem = 0; |
c5aa993b | 2402 | |
a42d7dd8 TT |
2403 | if (current_program_space->symfile_object_file != NULL) |
2404 | { | |
2405 | objfile *objf = current_program_space->symfile_object_file; | |
6cb06a8c TT |
2406 | gdb_printf (_("Symbols from \"%s\".\n"), |
2407 | objfile_name (objf)); | |
a42d7dd8 | 2408 | } |
c906108c | 2409 | |
328d42d8 SM |
2410 | for (target_ops *t = current_inferior ()->top_target (); |
2411 | t != NULL; | |
2412 | t = t->beneath ()) | |
c906108c | 2413 | { |
f6ac5f3d | 2414 | if (!t->has_memory ()) |
c906108c SS |
2415 | continue; |
2416 | ||
66b4deae | 2417 | if ((int) (t->stratum ()) <= (int) dummy_stratum) |
c906108c SS |
2418 | continue; |
2419 | if (has_all_mem) | |
6cb06a8c TT |
2420 | gdb_printf (_("\tWhile running this, " |
2421 | "GDB does not access memory from...\n")); | |
2422 | gdb_printf ("%s:\n", t->longname ()); | |
f6ac5f3d PA |
2423 | t->files_info (); |
2424 | has_all_mem = t->has_all_memory (); | |
c906108c SS |
2425 | } |
2426 | } | |
2427 | ||
fd79ecee DJ |
2428 | /* This function is called before any new inferior is created, e.g. |
2429 | by running a program, attaching, or connecting to a target. | |
2430 | It cleans up any state from previous invocations which might | |
2431 | change between runs. This is a subset of what target_preopen | |
2432 | resets (things which might change between targets). */ | |
2433 | ||
2434 | void | |
2435 | target_pre_inferior (int from_tty) | |
2436 | { | |
c378eb4e | 2437 | /* Clear out solib state. Otherwise the solib state of the previous |
b9db4ced | 2438 | inferior might have survived and is entirely wrong for the new |
c378eb4e | 2439 | target. This has been observed on GNU/Linux using glibc 2.3. How |
b9db4ced UW |
2440 | to reproduce: |
2441 | ||
2442 | bash$ ./foo& | |
2443 | [1] 4711 | |
2444 | bash$ ./foo& | |
2445 | [1] 4712 | |
2446 | bash$ gdb ./foo | |
2447 | [...] | |
2448 | (gdb) attach 4711 | |
2449 | (gdb) detach | |
2450 | (gdb) attach 4712 | |
2451 | Cannot access memory at address 0xdeadbeef | |
2452 | */ | |
b9db4ced | 2453 | |
50c71eaf PA |
2454 | /* In some OSs, the shared library list is the same/global/shared |
2455 | across inferiors. If code is shared between processes, so are | |
2456 | memory regions and features. */ | |
f5656ead | 2457 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
50c71eaf PA |
2458 | { |
2459 | no_shared_libraries (NULL, from_tty); | |
2460 | ||
2461 | invalidate_target_mem_regions (); | |
424163ea | 2462 | |
50c71eaf PA |
2463 | target_clear_description (); |
2464 | } | |
8ffcbaaf | 2465 | |
e9756d52 PP |
2466 | /* attach_flag may be set if the previous process associated with |
2467 | the inferior was attached to. */ | |
30220b46 | 2468 | current_inferior ()->attach_flag = false; |
e9756d52 | 2469 | |
5d5658a1 PA |
2470 | current_inferior ()->highest_thread_num = 0; |
2471 | ||
8ffcbaaf | 2472 | agent_capability_invalidate (); |
fd79ecee DJ |
2473 | } |
2474 | ||
c906108c SS |
2475 | /* This is to be called by the open routine before it does |
2476 | anything. */ | |
2477 | ||
2478 | void | |
fba45db2 | 2479 | target_preopen (int from_tty) |
c906108c | 2480 | { |
c5aa993b | 2481 | dont_repeat (); |
c906108c | 2482 | |
5b6d1e4f | 2483 | if (current_inferior ()->pid != 0) |
c5aa993b | 2484 | { |
adf40b2e | 2485 | if (!from_tty |
55f6301a | 2486 | || !target_has_execution () |
b8fa0bfa | 2487 | || query (_("A program is being debugged already. Kill it? "))) |
5b6d1e4f PA |
2488 | { |
2489 | /* Core inferiors actually should be detached, not | |
2490 | killed. */ | |
55f6301a | 2491 | if (target_has_execution ()) |
5b6d1e4f PA |
2492 | target_kill (); |
2493 | else | |
2494 | target_detach (current_inferior (), 0); | |
2495 | } | |
c906108c | 2496 | else |
8a3fe4f8 | 2497 | error (_("Program not killed.")); |
c906108c SS |
2498 | } |
2499 | ||
2500 | /* Calling target_kill may remove the target from the stack. But if | |
2501 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
2502 | /* Leave the exec target, though. The user may be switching from a |
2503 | live process to a core of the same program. */ | |
c8181f70 | 2504 | current_inferior ()->pop_all_targets_above (file_stratum); |
fd79ecee DJ |
2505 | |
2506 | target_pre_inferior (from_tty); | |
c906108c SS |
2507 | } |
2508 | ||
6bd6f3b6 | 2509 | /* See target.h. */ |
c906108c SS |
2510 | |
2511 | void | |
6e1e1966 | 2512 | target_detach (inferior *inf, int from_tty) |
c906108c | 2513 | { |
ddff2a2d AB |
2514 | /* Thread's don't need to be resumed until the end of this function. */ |
2515 | scoped_disable_commit_resumed disable_commit_resumed ("detaching"); | |
2516 | ||
5783e150 PW |
2517 | /* After we have detached, we will clear the register cache for this inferior |
2518 | by calling registers_changed_ptid. We must save the pid_ptid before | |
2519 | detaching, as the target detach method will clear inf->pid. */ | |
2520 | ptid_t save_pid_ptid = ptid_t (inf->pid); | |
2521 | ||
6e1e1966 SM |
2522 | /* As long as some to_detach implementations rely on the current_inferior |
2523 | (either directly, or indirectly, like through target_gdbarch or by | |
2524 | reading memory), INF needs to be the current inferior. When that | |
2525 | requirement will become no longer true, then we can remove this | |
2526 | assertion. */ | |
2527 | gdb_assert (inf == current_inferior ()); | |
2528 | ||
24291992 PA |
2529 | prepare_for_detach (); |
2530 | ||
5b6d1e4f PA |
2531 | /* Hold a strong reference because detaching may unpush the |
2532 | target. */ | |
2533 | auto proc_target_ref = target_ops_ref::new_reference (inf->process_target ()); | |
2534 | ||
328d42d8 | 2535 | current_inferior ()->top_target ()->detach (inf, from_tty); |
799efbe8 | 2536 | |
5b6d1e4f PA |
2537 | process_stratum_target *proc_target |
2538 | = as_process_stratum_target (proc_target_ref.get ()); | |
2539 | ||
2540 | registers_changed_ptid (proc_target, save_pid_ptid); | |
799efbe8 PW |
2541 | |
2542 | /* We have to ensure we have no frame cache left. Normally, | |
5783e150 PW |
2543 | registers_changed_ptid (save_pid_ptid) calls reinit_frame_cache when |
2544 | inferior_ptid matches save_pid_ptid, but in our case, it does not | |
799efbe8 PW |
2545 | call it, as inferior_ptid has been reset. */ |
2546 | reinit_frame_cache (); | |
ddff2a2d AB |
2547 | |
2548 | disable_commit_resumed.reset_and_commit (); | |
c906108c SS |
2549 | } |
2550 | ||
6ad8ae5c | 2551 | void |
fee354ee | 2552 | target_disconnect (const char *args, int from_tty) |
6ad8ae5c | 2553 | { |
50c71eaf PA |
2554 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
2555 | are global across processes, we have to remove them before | |
2556 | disconnecting. */ | |
74960c60 VP |
2557 | remove_breakpoints (); |
2558 | ||
328d42d8 | 2559 | current_inferior ()->top_target ()->disconnect (args, from_tty); |
6ad8ae5c DJ |
2560 | } |
2561 | ||
f2b9e3df SDJ |
2562 | /* See target/target.h. */ |
2563 | ||
117de6a9 | 2564 | ptid_t |
b60cea74 TT |
2565 | target_wait (ptid_t ptid, struct target_waitstatus *status, |
2566 | target_wait_flags options) | |
117de6a9 | 2567 | { |
328d42d8 | 2568 | target_ops *target = current_inferior ()->top_target (); |
1192f124 SM |
2569 | process_stratum_target *proc_target = current_inferior ()->process_target (); |
2570 | ||
2571 | gdb_assert (!proc_target->commit_resumed_state); | |
d3a07122 | 2572 | |
0c1e6e26 | 2573 | if (!target_can_async_p (target)) |
d3a07122 SM |
2574 | gdb_assert ((options & TARGET_WNOHANG) == 0); |
2575 | ||
fb85cece PM |
2576 | try |
2577 | { | |
2578 | gdb::observers::target_pre_wait.notify (ptid); | |
2579 | ptid_t event_ptid = target->wait (ptid, status, options); | |
2580 | gdb::observers::target_post_wait.notify (event_ptid); | |
2581 | return event_ptid; | |
2582 | } | |
2583 | catch (...) | |
2584 | { | |
2585 | gdb::observers::target_post_wait.notify (null_ptid); | |
2586 | throw; | |
2587 | } | |
117de6a9 PA |
2588 | } |
2589 | ||
0b333c5e PA |
2590 | /* See target.h. */ |
2591 | ||
2592 | ptid_t | |
2593 | default_target_wait (struct target_ops *ops, | |
2594 | ptid_t ptid, struct target_waitstatus *status, | |
b60cea74 | 2595 | target_wait_flags options) |
0b333c5e | 2596 | { |
183be222 | 2597 | status->set_ignore (); |
0b333c5e PA |
2598 | return minus_one_ptid; |
2599 | } | |
2600 | ||
a068643d | 2601 | std::string |
117de6a9 PA |
2602 | target_pid_to_str (ptid_t ptid) |
2603 | { | |
328d42d8 | 2604 | return current_inferior ()->top_target ()->pid_to_str (ptid); |
117de6a9 PA |
2605 | } |
2606 | ||
73ede765 | 2607 | const char * |
4694da01 TT |
2608 | target_thread_name (struct thread_info *info) |
2609 | { | |
5b6d1e4f PA |
2610 | gdb_assert (info->inf == current_inferior ()); |
2611 | ||
328d42d8 | 2612 | return current_inferior ()->top_target ()->thread_name (info); |
4694da01 TT |
2613 | } |
2614 | ||
e04ee09e KB |
2615 | struct thread_info * |
2616 | target_thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
2617 | int handle_len, | |
2618 | struct inferior *inf) | |
2619 | { | |
328d42d8 SM |
2620 | target_ops *target = current_inferior ()->top_target (); |
2621 | ||
2622 | return target->thread_handle_to_thread_info (thread_handle, handle_len, inf); | |
e04ee09e KB |
2623 | } |
2624 | ||
3d6c6204 KB |
2625 | /* See target.h. */ |
2626 | ||
2627 | gdb::byte_vector | |
2628 | target_thread_info_to_thread_handle (struct thread_info *tip) | |
2629 | { | |
328d42d8 SM |
2630 | target_ops *target = current_inferior ()->top_target (); |
2631 | ||
2632 | return target->thread_info_to_thread_handle (tip); | |
3d6c6204 KB |
2633 | } |
2634 | ||
e1ac3328 | 2635 | void |
d51926f0 | 2636 | target_resume (ptid_t scope_ptid, int step, enum gdb_signal signal) |
e1ac3328 | 2637 | { |
5b6d1e4f | 2638 | process_stratum_target *curr_target = current_inferior ()->process_target (); |
1192f124 | 2639 | gdb_assert (!curr_target->commit_resumed_state); |
5b6d1e4f | 2640 | |
d51926f0 PA |
2641 | gdb_assert (inferior_ptid != null_ptid); |
2642 | gdb_assert (inferior_ptid.matches (scope_ptid)); | |
2643 | ||
4e5d721f | 2644 | target_dcache_invalidate (); |
28439f5e | 2645 | |
d51926f0 | 2646 | current_inferior ()->top_target ()->resume (scope_ptid, step, signal); |
28439f5e | 2647 | |
d51926f0 | 2648 | registers_changed_ptid (curr_target, scope_ptid); |
251bde03 | 2649 | /* We only set the internal executing state here. The user/frontend |
f2ffa92b PA |
2650 | running state is set at a higher level. This also clears the |
2651 | thread's stop_pc as side effect. */ | |
d51926f0 PA |
2652 | set_executing (curr_target, scope_ptid, true); |
2653 | clear_inline_frame_state (curr_target, scope_ptid); | |
38ba82db JB |
2654 | |
2655 | if (target_can_async_p ()) | |
4a570176 | 2656 | target_async (true); |
e1ac3328 | 2657 | } |
2455069d | 2658 | |
85ad3aaf PA |
2659 | /* See target.h. */ |
2660 | ||
2661 | void | |
1192f124 | 2662 | target_commit_resumed () |
85ad3aaf | 2663 | { |
1192f124 SM |
2664 | gdb_assert (current_inferior ()->process_target ()->commit_resumed_state); |
2665 | current_inferior ()->top_target ()->commit_resumed (); | |
85ad3aaf PA |
2666 | } |
2667 | ||
b4b1a226 SM |
2668 | /* See target.h. */ |
2669 | ||
2670 | bool | |
2671 | target_has_pending_events () | |
2672 | { | |
2673 | return current_inferior ()->top_target ()->has_pending_events (); | |
2674 | } | |
2675 | ||
2455069d | 2676 | void |
adc6a863 | 2677 | target_pass_signals (gdb::array_view<const unsigned char> pass_signals) |
2455069d | 2678 | { |
328d42d8 | 2679 | current_inferior ()->top_target ()->pass_signals (pass_signals); |
2455069d UW |
2680 | } |
2681 | ||
9b224c5e | 2682 | void |
adc6a863 | 2683 | target_program_signals (gdb::array_view<const unsigned char> program_signals) |
9b224c5e | 2684 | { |
328d42d8 | 2685 | current_inferior ()->top_target ()->program_signals (program_signals); |
9b224c5e PA |
2686 | } |
2687 | ||
e97007b6 | 2688 | static void |
82d1f134 SM |
2689 | default_follow_fork (struct target_ops *self, inferior *child_inf, |
2690 | ptid_t child_ptid, target_waitkind fork_kind, | |
2691 | bool follow_child, bool detach_fork) | |
098dba18 TT |
2692 | { |
2693 | /* Some target returned a fork event, but did not know how to follow it. */ | |
f34652de | 2694 | internal_error (_("could not find a target to follow fork")); |
098dba18 TT |
2695 | } |
2696 | ||
e97007b6 | 2697 | /* See target.h. */ |
ee057212 | 2698 | |
e97007b6 | 2699 | void |
82d1f134 SM |
2700 | target_follow_fork (inferior *child_inf, ptid_t child_ptid, |
2701 | target_waitkind fork_kind, bool follow_child, | |
2702 | bool detach_fork) | |
ee057212 | 2703 | { |
328d42d8 SM |
2704 | target_ops *target = current_inferior ()->top_target (); |
2705 | ||
82d1f134 SM |
2706 | /* Check consistency between CHILD_INF, CHILD_PTID, FOLLOW_CHILD and |
2707 | DETACH_FORK. */ | |
2708 | if (child_inf != nullptr) | |
2709 | { | |
2710 | gdb_assert (follow_child || !detach_fork); | |
2711 | gdb_assert (child_inf->pid == child_ptid.pid ()); | |
2712 | } | |
2713 | else | |
2714 | gdb_assert (!follow_child && detach_fork); | |
2715 | ||
2716 | return target->follow_fork (child_inf, child_ptid, fork_kind, follow_child, | |
2717 | detach_fork); | |
ee057212 DJ |
2718 | } |
2719 | ||
294c36eb | 2720 | /* See target.h. */ |
94585166 DB |
2721 | |
2722 | void | |
294c36eb SM |
2723 | target_follow_exec (inferior *follow_inf, ptid_t ptid, |
2724 | const char *execd_pathname) | |
94585166 | 2725 | { |
294c36eb SM |
2726 | current_inferior ()->top_target ()->follow_exec (follow_inf, ptid, |
2727 | execd_pathname); | |
94585166 DB |
2728 | } |
2729 | ||
8d657035 TT |
2730 | static void |
2731 | default_mourn_inferior (struct target_ops *self) | |
2732 | { | |
f34652de | 2733 | internal_error (_("could not find a target to follow mourn inferior")); |
8d657035 TT |
2734 | } |
2735 | ||
136d6dae | 2736 | void |
bc1e6c81 | 2737 | target_mourn_inferior (ptid_t ptid) |
136d6dae | 2738 | { |
dffdd8b5 | 2739 | gdb_assert (ptid.pid () == inferior_ptid.pid ()); |
328d42d8 | 2740 | current_inferior ()->top_target ()->mourn_inferior (); |
136d6dae | 2741 | |
8d657035 TT |
2742 | /* We no longer need to keep handles on any of the object files. |
2743 | Make sure to release them to avoid unnecessarily locking any | |
2744 | of them while we're not actually debugging. */ | |
2745 | bfd_cache_close_all (); | |
136d6dae VP |
2746 | } |
2747 | ||
424163ea DJ |
2748 | /* Look for a target which can describe architectural features, starting |
2749 | from TARGET. If we find one, return its description. */ | |
2750 | ||
2751 | const struct target_desc * | |
2752 | target_read_description (struct target_ops *target) | |
2753 | { | |
f6ac5f3d | 2754 | return target->read_description (); |
424163ea DJ |
2755 | } |
2756 | ||
08388c79 | 2757 | |
58a5184e TT |
2758 | /* Default implementation of memory-searching. */ |
2759 | ||
2760 | static int | |
2761 | default_search_memory (struct target_ops *self, | |
2762 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2763 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2764 | CORE_ADDR *found_addrp) | |
2765 | { | |
4a72de73 TT |
2766 | auto read_memory = [=] (CORE_ADDR addr, gdb_byte *result, size_t len) |
2767 | { | |
328d42d8 SM |
2768 | return target_read (current_inferior ()->top_target (), |
2769 | TARGET_OBJECT_MEMORY, NULL, | |
4a72de73 TT |
2770 | result, addr, len) == len; |
2771 | }; | |
2772 | ||
58a5184e | 2773 | /* Start over from the top of the target stack. */ |
4a72de73 | 2774 | return simple_search_memory (read_memory, start_addr, search_space_len, |
58a5184e TT |
2775 | pattern, pattern_len, found_addrp); |
2776 | } | |
2777 | ||
08388c79 DE |
2778 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the |
2779 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2780 | ||
2781 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2782 | requiring halting of the search (e.g. memory read error). | |
2783 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2784 | ||
2785 | int | |
2786 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2787 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2788 | CORE_ADDR *found_addrp) | |
2789 | { | |
328d42d8 SM |
2790 | target_ops *target = current_inferior ()->top_target (); |
2791 | ||
2792 | return target->search_memory (start_addr, search_space_len, pattern, | |
2793 | pattern_len, found_addrp); | |
08388c79 DE |
2794 | } |
2795 | ||
8edfe269 DJ |
2796 | /* Look through the currently pushed targets. If none of them will |
2797 | be able to restart the currently running process, issue an error | |
2798 | message. */ | |
2799 | ||
2800 | void | |
2801 | target_require_runnable (void) | |
2802 | { | |
328d42d8 SM |
2803 | for (target_ops *t = current_inferior ()->top_target (); |
2804 | t != NULL; | |
2805 | t = t->beneath ()) | |
8edfe269 DJ |
2806 | { |
2807 | /* If this target knows how to create a new program, then | |
2808 | assume we will still be able to after killing the current | |
2809 | one. Either killing and mourning will not pop T, or else | |
2810 | find_default_run_target will find it again. */ | |
f6ac5f3d | 2811 | if (t->can_create_inferior ()) |
8edfe269 DJ |
2812 | return; |
2813 | ||
548740d6 | 2814 | /* Do not worry about targets at certain strata that can not |
8edfe269 DJ |
2815 | create inferiors. Assume they will be pushed again if |
2816 | necessary, and continue to the process_stratum. */ | |
66b4deae | 2817 | if (t->stratum () > process_stratum) |
8edfe269 DJ |
2818 | continue; |
2819 | ||
3e43a32a MS |
2820 | error (_("The \"%s\" target does not support \"run\". " |
2821 | "Try \"help target\" or \"continue\"."), | |
f6ac5f3d | 2822 | t->shortname ()); |
8edfe269 DJ |
2823 | } |
2824 | ||
2825 | /* This function is only called if the target is running. In that | |
2826 | case there should have been a process_stratum target and it | |
c378eb4e | 2827 | should either know how to create inferiors, or not... */ |
f34652de | 2828 | internal_error (_("No targets found")); |
8edfe269 DJ |
2829 | } |
2830 | ||
6a3cb8e8 PA |
2831 | /* Whether GDB is allowed to fall back to the default run target for |
2832 | "run", "attach", etc. when no target is connected yet. */ | |
491144b5 | 2833 | static bool auto_connect_native_target = true; |
6a3cb8e8 PA |
2834 | |
2835 | static void | |
2836 | show_auto_connect_native_target (struct ui_file *file, int from_tty, | |
2837 | struct cmd_list_element *c, const char *value) | |
2838 | { | |
6cb06a8c TT |
2839 | gdb_printf (file, |
2840 | _("Whether GDB may automatically connect to the " | |
2841 | "native target is %s.\n"), | |
2842 | value); | |
6a3cb8e8 PA |
2843 | } |
2844 | ||
d9f719f1 PA |
2845 | /* A pointer to the target that can respond to "run" or "attach". |
2846 | Native targets are always singletons and instantiated early at GDB | |
2847 | startup. */ | |
2848 | static target_ops *the_native_target; | |
2849 | ||
2850 | /* See target.h. */ | |
2851 | ||
2852 | void | |
2853 | set_native_target (target_ops *target) | |
2854 | { | |
2855 | if (the_native_target != NULL) | |
f34652de | 2856 | internal_error (_("native target already set (\"%s\")."), |
d9f719f1 PA |
2857 | the_native_target->longname ()); |
2858 | ||
2859 | the_native_target = target; | |
2860 | } | |
2861 | ||
2862 | /* See target.h. */ | |
2863 | ||
2864 | target_ops * | |
2865 | get_native_target () | |
2866 | { | |
2867 | return the_native_target; | |
2868 | } | |
2869 | ||
c906108c SS |
2870 | /* Look through the list of possible targets for a target that can |
2871 | execute a run or attach command without any other data. This is | |
2872 | used to locate the default process stratum. | |
2873 | ||
5f667f2d PA |
2874 | If DO_MESG is not NULL, the result is always valid (error() is |
2875 | called for errors); else, return NULL on error. */ | |
c906108c SS |
2876 | |
2877 | static struct target_ops * | |
a121b7c1 | 2878 | find_default_run_target (const char *do_mesg) |
c906108c | 2879 | { |
d9f719f1 PA |
2880 | if (auto_connect_native_target && the_native_target != NULL) |
2881 | return the_native_target; | |
c906108c | 2882 | |
d9f719f1 PA |
2883 | if (do_mesg != NULL) |
2884 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
2885 | return NULL; | |
c906108c SS |
2886 | } |
2887 | ||
b3ccfe11 | 2888 | /* See target.h. */ |
c906108c | 2889 | |
b3ccfe11 TT |
2890 | struct target_ops * |
2891 | find_attach_target (void) | |
c906108c | 2892 | { |
b3ccfe11 | 2893 | /* If a target on the current stack can attach, use it. */ |
328d42d8 SM |
2894 | for (target_ops *t = current_inferior ()->top_target (); |
2895 | t != NULL; | |
2896 | t = t->beneath ()) | |
b3ccfe11 | 2897 | { |
f6ac5f3d | 2898 | if (t->can_attach ()) |
d9f719f1 | 2899 | return t; |
b3ccfe11 | 2900 | } |
c906108c | 2901 | |
b3ccfe11 | 2902 | /* Otherwise, use the default run target for attaching. */ |
d9f719f1 | 2903 | return find_default_run_target ("attach"); |
b84876c2 PA |
2904 | } |
2905 | ||
b3ccfe11 | 2906 | /* See target.h. */ |
b84876c2 | 2907 | |
b3ccfe11 TT |
2908 | struct target_ops * |
2909 | find_run_target (void) | |
9908b566 | 2910 | { |
f6ac5f3d | 2911 | /* If a target on the current stack can run, use it. */ |
328d42d8 SM |
2912 | for (target_ops *t = current_inferior ()->top_target (); |
2913 | t != NULL; | |
2914 | t = t->beneath ()) | |
b3ccfe11 | 2915 | { |
f6ac5f3d | 2916 | if (t->can_create_inferior ()) |
d9f719f1 | 2917 | return t; |
b3ccfe11 | 2918 | } |
5d502164 | 2919 | |
b3ccfe11 | 2920 | /* Otherwise, use the default run target. */ |
d9f719f1 | 2921 | return find_default_run_target ("run"); |
9908b566 VP |
2922 | } |
2923 | ||
f6ac5f3d PA |
2924 | bool |
2925 | target_ops::info_proc (const char *args, enum info_proc_what what) | |
2926 | { | |
2927 | return false; | |
2928 | } | |
2929 | ||
145b16a9 UW |
2930 | /* Implement the "info proc" command. */ |
2931 | ||
451b7c33 | 2932 | int |
7bc112c1 | 2933 | target_info_proc (const char *args, enum info_proc_what what) |
145b16a9 UW |
2934 | { |
2935 | struct target_ops *t; | |
2936 | ||
2937 | /* If we're already connected to something that can get us OS | |
2938 | related data, use it. Otherwise, try using the native | |
2939 | target. */ | |
f6ac5f3d PA |
2940 | t = find_target_at (process_stratum); |
2941 | if (t == NULL) | |
145b16a9 UW |
2942 | t = find_default_run_target (NULL); |
2943 | ||
b6a8c27b | 2944 | for (; t != NULL; t = t->beneath ()) |
145b16a9 | 2945 | { |
f6ac5f3d | 2946 | if (t->info_proc (args, what)) |
145b16a9 | 2947 | { |
145b16a9 | 2948 | if (targetdebug) |
6cb06a8c TT |
2949 | gdb_printf (gdb_stdlog, |
2950 | "target_info_proc (\"%s\", %d)\n", args, what); | |
145b16a9 | 2951 | |
451b7c33 | 2952 | return 1; |
145b16a9 UW |
2953 | } |
2954 | } | |
2955 | ||
451b7c33 | 2956 | return 0; |
145b16a9 UW |
2957 | } |
2958 | ||
03583c20 | 2959 | static int |
2bfc0540 | 2960 | find_default_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
2961 | { |
2962 | struct target_ops *t; | |
2963 | ||
2964 | t = find_default_run_target (NULL); | |
f6ac5f3d PA |
2965 | if (t != NULL) |
2966 | return t->supports_disable_randomization (); | |
03583c20 UW |
2967 | return 0; |
2968 | } | |
2969 | ||
2970 | int | |
2971 | target_supports_disable_randomization (void) | |
2972 | { | |
328d42d8 | 2973 | return current_inferior ()->top_target ()->supports_disable_randomization (); |
03583c20 | 2974 | } |
9908b566 | 2975 | |
1fb77080 SDJ |
2976 | /* See target/target.h. */ |
2977 | ||
2978 | int | |
2979 | target_supports_multi_process (void) | |
2980 | { | |
328d42d8 | 2981 | return current_inferior ()->top_target ()->supports_multi_process (); |
1fb77080 SDJ |
2982 | } |
2983 | ||
b7b030ad TT |
2984 | /* See target.h. */ |
2985 | ||
9018be22 | 2986 | gdb::optional<gdb::char_vector> |
07e059b5 VP |
2987 | target_get_osdata (const char *type) |
2988 | { | |
07e059b5 VP |
2989 | struct target_ops *t; |
2990 | ||
739ef7fb PA |
2991 | /* If we're already connected to something that can get us OS |
2992 | related data, use it. Otherwise, try using the native | |
2993 | target. */ | |
f6ac5f3d PA |
2994 | t = find_target_at (process_stratum); |
2995 | if (t == NULL) | |
739ef7fb | 2996 | t = find_default_run_target ("get OS data"); |
07e059b5 VP |
2997 | |
2998 | if (!t) | |
9018be22 | 2999 | return {}; |
07e059b5 | 3000 | |
6d097e65 | 3001 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
3002 | } |
3003 | ||
8eaff7cd TT |
3004 | /* Determine the current address space of thread PTID. */ |
3005 | ||
3006 | struct address_space * | |
3007 | target_thread_address_space (ptid_t ptid) | |
3008 | { | |
3009 | struct address_space *aspace; | |
3010 | ||
328d42d8 | 3011 | aspace = current_inferior ()->top_target ()->thread_address_space (ptid); |
8eaff7cd TT |
3012 | gdb_assert (aspace != NULL); |
3013 | ||
8eaff7cd TT |
3014 | return aspace; |
3015 | } | |
3016 | ||
b6a8c27b PA |
3017 | /* See target.h. */ |
3018 | ||
3019 | target_ops * | |
3020 | target_ops::beneath () const | |
3021 | { | |
5b6d1e4f | 3022 | return current_inferior ()->find_target_beneath (this); |
b6a8c27b PA |
3023 | } |
3024 | ||
f6ac5f3d PA |
3025 | void |
3026 | target_ops::close () | |
3027 | { | |
3028 | } | |
3029 | ||
3030 | bool | |
3031 | target_ops::can_attach () | |
3032 | { | |
3033 | return 0; | |
3034 | } | |
3035 | ||
3036 | void | |
3037 | target_ops::attach (const char *, int) | |
3038 | { | |
3039 | gdb_assert_not_reached ("target_ops::attach called"); | |
3040 | } | |
3041 | ||
3042 | bool | |
3043 | target_ops::can_create_inferior () | |
3044 | { | |
3045 | return 0; | |
3046 | } | |
3047 | ||
3048 | void | |
3049 | target_ops::create_inferior (const char *, const std::string &, | |
3050 | char **, int) | |
3051 | { | |
3052 | gdb_assert_not_reached ("target_ops::create_inferior called"); | |
3053 | } | |
3054 | ||
57810aa7 | 3055 | bool |
f6ac5f3d PA |
3056 | target_ops::can_run () |
3057 | { | |
57810aa7 | 3058 | return false; |
f6ac5f3d PA |
3059 | } |
3060 | ||
3061 | int | |
3062 | target_can_run () | |
3063 | { | |
328d42d8 SM |
3064 | for (target_ops *t = current_inferior ()->top_target (); |
3065 | t != NULL; | |
3066 | t = t->beneath ()) | |
f6ac5f3d PA |
3067 | { |
3068 | if (t->can_run ()) | |
3069 | return 1; | |
3070 | } | |
3071 | ||
3072 | return 0; | |
3073 | } | |
7313baad UW |
3074 | |
3075 | /* Target file operations. */ | |
3076 | ||
3077 | static struct target_ops * | |
3078 | default_fileio_target (void) | |
3079 | { | |
f6ac5f3d PA |
3080 | struct target_ops *t; |
3081 | ||
7313baad UW |
3082 | /* If we're already connected to something that can perform |
3083 | file I/O, use it. Otherwise, try using the native target. */ | |
f6ac5f3d PA |
3084 | t = find_target_at (process_stratum); |
3085 | if (t != NULL) | |
3086 | return t; | |
3087 | return find_default_run_target ("file I/O"); | |
7313baad UW |
3088 | } |
3089 | ||
1c4b552b GB |
3090 | /* File handle for target file operations. */ |
3091 | ||
5ff79300 | 3092 | struct fileio_fh_t |
1c4b552b | 3093 | { |
20db9c52 PA |
3094 | /* The target on which this file is open. NULL if the target is |
3095 | meanwhile closed while the handle is open. */ | |
5ff79300 | 3096 | target_ops *target; |
1c4b552b GB |
3097 | |
3098 | /* The file descriptor on the target. */ | |
5ff79300 | 3099 | int target_fd; |
1c4b552b | 3100 | |
5ff79300 PA |
3101 | /* Check whether this fileio_fh_t represents a closed file. */ |
3102 | bool is_closed () | |
3103 | { | |
3104 | return target_fd < 0; | |
3105 | } | |
3106 | }; | |
1c4b552b GB |
3107 | |
3108 | /* Vector of currently open file handles. The value returned by | |
3109 | target_fileio_open and passed as the FD argument to other | |
3110 | target_fileio_* functions is an index into this vector. This | |
3111 | vector's entries are never freed; instead, files are marked as | |
3112 | closed, and the handle becomes available for reuse. */ | |
5ff79300 | 3113 | static std::vector<fileio_fh_t> fileio_fhandles; |
1c4b552b GB |
3114 | |
3115 | /* Index into fileio_fhandles of the lowest handle that might be | |
3116 | closed. This permits handle reuse without searching the whole | |
3117 | list each time a new file is opened. */ | |
3118 | static int lowest_closed_fd; | |
3119 | ||
d7cb0ef3 | 3120 | /* See target.h. */ |
20db9c52 | 3121 | |
d7cb0ef3 | 3122 | void |
20db9c52 PA |
3123 | fileio_handles_invalidate_target (target_ops *targ) |
3124 | { | |
3125 | for (fileio_fh_t &fh : fileio_fhandles) | |
3126 | if (fh.target == targ) | |
3127 | fh.target = NULL; | |
3128 | } | |
3129 | ||
1c4b552b GB |
3130 | /* Acquire a target fileio file descriptor. */ |
3131 | ||
3132 | static int | |
5ff79300 | 3133 | acquire_fileio_fd (target_ops *target, int target_fd) |
1c4b552b | 3134 | { |
1c4b552b | 3135 | /* Search for closed handles to reuse. */ |
5ff79300 PA |
3136 | for (; lowest_closed_fd < fileio_fhandles.size (); lowest_closed_fd++) |
3137 | { | |
3138 | fileio_fh_t &fh = fileio_fhandles[lowest_closed_fd]; | |
3139 | ||
3140 | if (fh.is_closed ()) | |
3141 | break; | |
3142 | } | |
1c4b552b GB |
3143 | |
3144 | /* Push a new handle if no closed handles were found. */ | |
5ff79300 PA |
3145 | if (lowest_closed_fd == fileio_fhandles.size ()) |
3146 | fileio_fhandles.push_back (fileio_fh_t {target, target_fd}); | |
3147 | else | |
3148 | fileio_fhandles[lowest_closed_fd] = {target, target_fd}; | |
1c4b552b | 3149 | |
5ff79300 PA |
3150 | /* Should no longer be marked closed. */ |
3151 | gdb_assert (!fileio_fhandles[lowest_closed_fd].is_closed ()); | |
1c4b552b GB |
3152 | |
3153 | /* Return its index, and start the next lookup at | |
3154 | the next index. */ | |
3155 | return lowest_closed_fd++; | |
3156 | } | |
3157 | ||
3158 | /* Release a target fileio file descriptor. */ | |
3159 | ||
3160 | static void | |
3161 | release_fileio_fd (int fd, fileio_fh_t *fh) | |
3162 | { | |
5ff79300 | 3163 | fh->target_fd = -1; |
325fac50 | 3164 | lowest_closed_fd = std::min (lowest_closed_fd, fd); |
1c4b552b GB |
3165 | } |
3166 | ||
3167 | /* Return a pointer to the fileio_fhandle_t corresponding to FD. */ | |
3168 | ||
5ff79300 PA |
3169 | static fileio_fh_t * |
3170 | fileio_fd_to_fh (int fd) | |
3171 | { | |
3172 | return &fileio_fhandles[fd]; | |
3173 | } | |
1c4b552b | 3174 | |
f6ac5f3d PA |
3175 | |
3176 | /* Default implementations of file i/o methods. We don't want these | |
3177 | to delegate automatically, because we need to know which target | |
3178 | supported the method, in order to call it directly from within | |
3179 | pread/pwrite, etc. */ | |
3180 | ||
3181 | int | |
3182 | target_ops::fileio_open (struct inferior *inf, const char *filename, | |
3183 | int flags, int mode, int warn_if_slow, | |
b872057a | 3184 | fileio_error *target_errno) |
f6ac5f3d PA |
3185 | { |
3186 | *target_errno = FILEIO_ENOSYS; | |
3187 | return -1; | |
3188 | } | |
3189 | ||
3190 | int | |
3191 | target_ops::fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
b872057a | 3192 | ULONGEST offset, fileio_error *target_errno) |
f6ac5f3d PA |
3193 | { |
3194 | *target_errno = FILEIO_ENOSYS; | |
3195 | return -1; | |
3196 | } | |
3197 | ||
3198 | int | |
3199 | target_ops::fileio_pread (int fd, gdb_byte *read_buf, int len, | |
b872057a | 3200 | ULONGEST offset, fileio_error *target_errno) |
f6ac5f3d PA |
3201 | { |
3202 | *target_errno = FILEIO_ENOSYS; | |
3203 | return -1; | |
3204 | } | |
3205 | ||
3206 | int | |
b872057a | 3207 | target_ops::fileio_fstat (int fd, struct stat *sb, fileio_error *target_errno) |
f6ac5f3d PA |
3208 | { |
3209 | *target_errno = FILEIO_ENOSYS; | |
3210 | return -1; | |
3211 | } | |
3212 | ||
3213 | int | |
b872057a | 3214 | target_ops::fileio_close (int fd, fileio_error *target_errno) |
f6ac5f3d PA |
3215 | { |
3216 | *target_errno = FILEIO_ENOSYS; | |
3217 | return -1; | |
3218 | } | |
3219 | ||
3220 | int | |
3221 | target_ops::fileio_unlink (struct inferior *inf, const char *filename, | |
b872057a | 3222 | fileio_error *target_errno) |
f6ac5f3d PA |
3223 | { |
3224 | *target_errno = FILEIO_ENOSYS; | |
3225 | return -1; | |
3226 | } | |
3227 | ||
3228 | gdb::optional<std::string> | |
3229 | target_ops::fileio_readlink (struct inferior *inf, const char *filename, | |
b872057a | 3230 | fileio_error *target_errno) |
f6ac5f3d PA |
3231 | { |
3232 | *target_errno = FILEIO_ENOSYS; | |
3233 | return {}; | |
3234 | } | |
3235 | ||
4111f652 | 3236 | /* See target.h. */ |
12e2a5fd | 3237 | |
4111f652 PA |
3238 | int |
3239 | target_fileio_open (struct inferior *inf, const char *filename, | |
b872057a | 3240 | int flags, int mode, bool warn_if_slow, fileio_error *target_errno) |
7313baad | 3241 | { |
b6a8c27b | 3242 | for (target_ops *t = default_fileio_target (); t != NULL; t = t->beneath ()) |
7313baad | 3243 | { |
f6ac5f3d PA |
3244 | int fd = t->fileio_open (inf, filename, flags, mode, |
3245 | warn_if_slow, target_errno); | |
7313baad | 3246 | |
f6ac5f3d PA |
3247 | if (fd == -1 && *target_errno == FILEIO_ENOSYS) |
3248 | continue; | |
1c4b552b | 3249 | |
f6ac5f3d PA |
3250 | if (fd < 0) |
3251 | fd = -1; | |
3252 | else | |
3253 | fd = acquire_fileio_fd (t, fd); | |
3254 | ||
3255 | if (targetdebug) | |
6cb06a8c TT |
3256 | gdb_printf (gdb_stdlog, |
3257 | "target_fileio_open (%d,%s,0x%x,0%o,%d)" | |
3258 | " = %d (%d)\n", | |
3259 | inf == NULL ? 0 : inf->num, | |
3260 | filename, flags, mode, | |
3261 | warn_if_slow, fd, | |
3262 | fd != -1 ? 0 : *target_errno); | |
f6ac5f3d | 3263 | return fd; |
7313baad UW |
3264 | } |
3265 | ||
3266 | *target_errno = FILEIO_ENOSYS; | |
3267 | return -1; | |
3268 | } | |
3269 | ||
12e2a5fd GB |
3270 | /* See target.h. */ |
3271 | ||
7313baad UW |
3272 | int |
3273 | target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
b872057a | 3274 | ULONGEST offset, fileio_error *target_errno) |
7313baad | 3275 | { |
1c4b552b GB |
3276 | fileio_fh_t *fh = fileio_fd_to_fh (fd); |
3277 | int ret = -1; | |
7313baad | 3278 | |
5ff79300 | 3279 | if (fh->is_closed ()) |
b872057a | 3280 | *target_errno = FILEIO_EBADF; |
20db9c52 | 3281 | else if (fh->target == NULL) |
b872057a | 3282 | *target_errno = FILEIO_EIO; |
1c4b552b | 3283 | else |
f6ac5f3d PA |
3284 | ret = fh->target->fileio_pwrite (fh->target_fd, write_buf, |
3285 | len, offset, target_errno); | |
7313baad | 3286 | |
1c4b552b | 3287 | if (targetdebug) |
6cb06a8c TT |
3288 | gdb_printf (gdb_stdlog, |
3289 | "target_fileio_pwrite (%d,...,%d,%s) " | |
3290 | "= %d (%d)\n", | |
3291 | fd, len, pulongest (offset), | |
3292 | ret, ret != -1 ? 0 : *target_errno); | |
1c4b552b | 3293 | return ret; |
7313baad UW |
3294 | } |
3295 | ||
12e2a5fd GB |
3296 | /* See target.h. */ |
3297 | ||
7313baad UW |
3298 | int |
3299 | target_fileio_pread (int fd, gdb_byte *read_buf, int len, | |
b872057a | 3300 | ULONGEST offset, fileio_error *target_errno) |
7313baad | 3301 | { |
1c4b552b GB |
3302 | fileio_fh_t *fh = fileio_fd_to_fh (fd); |
3303 | int ret = -1; | |
7313baad | 3304 | |
5ff79300 | 3305 | if (fh->is_closed ()) |
b872057a | 3306 | *target_errno = FILEIO_EBADF; |
20db9c52 | 3307 | else if (fh->target == NULL) |
b872057a | 3308 | *target_errno = FILEIO_EIO; |
1c4b552b | 3309 | else |
f6ac5f3d PA |
3310 | ret = fh->target->fileio_pread (fh->target_fd, read_buf, |
3311 | len, offset, target_errno); | |
7313baad | 3312 | |
1c4b552b | 3313 | if (targetdebug) |
6cb06a8c TT |
3314 | gdb_printf (gdb_stdlog, |
3315 | "target_fileio_pread (%d,...,%d,%s) " | |
3316 | "= %d (%d)\n", | |
3317 | fd, len, pulongest (offset), | |
3318 | ret, ret != -1 ? 0 : *target_errno); | |
9b15c1f0 GB |
3319 | return ret; |
3320 | } | |
3321 | ||
3322 | /* See target.h. */ | |
12e2a5fd | 3323 | |
9b15c1f0 | 3324 | int |
b872057a | 3325 | target_fileio_fstat (int fd, struct stat *sb, fileio_error *target_errno) |
9b15c1f0 GB |
3326 | { |
3327 | fileio_fh_t *fh = fileio_fd_to_fh (fd); | |
3328 | int ret = -1; | |
3329 | ||
5ff79300 | 3330 | if (fh->is_closed ()) |
b872057a | 3331 | *target_errno = FILEIO_EBADF; |
20db9c52 | 3332 | else if (fh->target == NULL) |
b872057a | 3333 | *target_errno = FILEIO_EIO; |
9b15c1f0 | 3334 | else |
f6ac5f3d | 3335 | ret = fh->target->fileio_fstat (fh->target_fd, sb, target_errno); |
9b15c1f0 GB |
3336 | |
3337 | if (targetdebug) | |
6cb06a8c TT |
3338 | gdb_printf (gdb_stdlog, |
3339 | "target_fileio_fstat (%d) = %d (%d)\n", | |
3340 | fd, ret, ret != -1 ? 0 : *target_errno); | |
1c4b552b | 3341 | return ret; |
7313baad UW |
3342 | } |
3343 | ||
12e2a5fd GB |
3344 | /* See target.h. */ |
3345 | ||
7313baad | 3346 | int |
b872057a | 3347 | target_fileio_close (int fd, fileio_error *target_errno) |
7313baad | 3348 | { |
1c4b552b GB |
3349 | fileio_fh_t *fh = fileio_fd_to_fh (fd); |
3350 | int ret = -1; | |
7313baad | 3351 | |
5ff79300 | 3352 | if (fh->is_closed ()) |
b872057a | 3353 | *target_errno = FILEIO_EBADF; |
1c4b552b | 3354 | else |
7313baad | 3355 | { |
20db9c52 | 3356 | if (fh->target != NULL) |
f6ac5f3d PA |
3357 | ret = fh->target->fileio_close (fh->target_fd, |
3358 | target_errno); | |
20db9c52 PA |
3359 | else |
3360 | ret = 0; | |
1c4b552b | 3361 | release_fileio_fd (fd, fh); |
7313baad UW |
3362 | } |
3363 | ||
1c4b552b | 3364 | if (targetdebug) |
6cb06a8c TT |
3365 | gdb_printf (gdb_stdlog, |
3366 | "target_fileio_close (%d) = %d (%d)\n", | |
3367 | fd, ret, ret != -1 ? 0 : *target_errno); | |
1c4b552b | 3368 | return ret; |
7313baad UW |
3369 | } |
3370 | ||
12e2a5fd GB |
3371 | /* See target.h. */ |
3372 | ||
7313baad | 3373 | int |
07c138c8 | 3374 | target_fileio_unlink (struct inferior *inf, const char *filename, |
b872057a | 3375 | fileio_error *target_errno) |
7313baad | 3376 | { |
b6a8c27b | 3377 | for (target_ops *t = default_fileio_target (); t != NULL; t = t->beneath ()) |
7313baad | 3378 | { |
f6ac5f3d | 3379 | int ret = t->fileio_unlink (inf, filename, target_errno); |
7313baad | 3380 | |
f6ac5f3d PA |
3381 | if (ret == -1 && *target_errno == FILEIO_ENOSYS) |
3382 | continue; | |
3383 | ||
3384 | if (targetdebug) | |
6cb06a8c TT |
3385 | gdb_printf (gdb_stdlog, |
3386 | "target_fileio_unlink (%d,%s)" | |
3387 | " = %d (%d)\n", | |
3388 | inf == NULL ? 0 : inf->num, filename, | |
3389 | ret, ret != -1 ? 0 : *target_errno); | |
f6ac5f3d | 3390 | return ret; |
7313baad UW |
3391 | } |
3392 | ||
3393 | *target_errno = FILEIO_ENOSYS; | |
3394 | return -1; | |
3395 | } | |
3396 | ||
12e2a5fd GB |
3397 | /* See target.h. */ |
3398 | ||
e0d3522b | 3399 | gdb::optional<std::string> |
07c138c8 | 3400 | target_fileio_readlink (struct inferior *inf, const char *filename, |
b872057a | 3401 | fileio_error *target_errno) |
b9e7b9c3 | 3402 | { |
b6a8c27b | 3403 | for (target_ops *t = default_fileio_target (); t != NULL; t = t->beneath ()) |
b9e7b9c3 | 3404 | { |
f6ac5f3d PA |
3405 | gdb::optional<std::string> ret |
3406 | = t->fileio_readlink (inf, filename, target_errno); | |
b9e7b9c3 | 3407 | |
f6ac5f3d PA |
3408 | if (!ret.has_value () && *target_errno == FILEIO_ENOSYS) |
3409 | continue; | |
3410 | ||
3411 | if (targetdebug) | |
6cb06a8c TT |
3412 | gdb_printf (gdb_stdlog, |
3413 | "target_fileio_readlink (%d,%s)" | |
3414 | " = %s (%d)\n", | |
3415 | inf == NULL ? 0 : inf->num, | |
3416 | filename, ret ? ret->c_str () : "(nil)", | |
3417 | ret ? 0 : *target_errno); | |
f6ac5f3d | 3418 | return ret; |
b9e7b9c3 UW |
3419 | } |
3420 | ||
3421 | *target_errno = FILEIO_ENOSYS; | |
e0d3522b | 3422 | return {}; |
b9e7b9c3 UW |
3423 | } |
3424 | ||
770623f7 TT |
3425 | /* Like scoped_fd, but specific to target fileio. */ |
3426 | ||
3427 | class scoped_target_fd | |
7313baad | 3428 | { |
770623f7 TT |
3429 | public: |
3430 | explicit scoped_target_fd (int fd) noexcept | |
3431 | : m_fd (fd) | |
3432 | { | |
3433 | } | |
7313baad | 3434 | |
770623f7 TT |
3435 | ~scoped_target_fd () |
3436 | { | |
3437 | if (m_fd >= 0) | |
3438 | { | |
b872057a | 3439 | fileio_error target_errno; |
770623f7 TT |
3440 | |
3441 | target_fileio_close (m_fd, &target_errno); | |
3442 | } | |
3443 | } | |
3444 | ||
3445 | DISABLE_COPY_AND_ASSIGN (scoped_target_fd); | |
3446 | ||
3447 | int get () const noexcept | |
3448 | { | |
3449 | return m_fd; | |
3450 | } | |
3451 | ||
3452 | private: | |
3453 | int m_fd; | |
3454 | }; | |
7313baad | 3455 | |
07c138c8 GB |
3456 | /* Read target file FILENAME, in the filesystem as seen by INF. If |
3457 | INF is NULL, use the filesystem seen by the debugger (GDB or, for | |
3458 | remote targets, the remote stub). Store the result in *BUF_P and | |
3459 | return the size of the transferred data. PADDING additional bytes | |
3460 | are available in *BUF_P. This is a helper function for | |
3461 | target_fileio_read_alloc; see the declaration of that function for | |
3462 | more information. */ | |
7313baad | 3463 | |
f7af1fcd JK |
3464 | static LONGEST |
3465 | target_fileio_read_alloc_1 (struct inferior *inf, const char *filename, | |
3466 | gdb_byte **buf_p, int padding) | |
3467 | { | |
db1ff28b JK |
3468 | size_t buf_alloc, buf_pos; |
3469 | gdb_byte *buf; | |
3470 | LONGEST n; | |
b872057a | 3471 | fileio_error target_errno; |
f7af1fcd | 3472 | |
770623f7 | 3473 | scoped_target_fd fd (target_fileio_open (inf, filename, FILEIO_O_RDONLY, |
4111f652 | 3474 | 0700, false, &target_errno)); |
770623f7 | 3475 | if (fd.get () == -1) |
f7af1fcd JK |
3476 | return -1; |
3477 | ||
db1ff28b JK |
3478 | /* Start by reading up to 4K at a time. The target will throttle |
3479 | this number down if necessary. */ | |
3480 | buf_alloc = 4096; | |
224c3ddb | 3481 | buf = (gdb_byte *) xmalloc (buf_alloc); |
db1ff28b JK |
3482 | buf_pos = 0; |
3483 | while (1) | |
3484 | { | |
770623f7 | 3485 | n = target_fileio_pread (fd.get (), &buf[buf_pos], |
db1ff28b JK |
3486 | buf_alloc - buf_pos - padding, buf_pos, |
3487 | &target_errno); | |
3488 | if (n < 0) | |
3489 | { | |
3490 | /* An error occurred. */ | |
db1ff28b JK |
3491 | xfree (buf); |
3492 | return -1; | |
3493 | } | |
3494 | else if (n == 0) | |
3495 | { | |
3496 | /* Read all there was. */ | |
db1ff28b JK |
3497 | if (buf_pos == 0) |
3498 | xfree (buf); | |
3499 | else | |
3500 | *buf_p = buf; | |
3501 | return buf_pos; | |
3502 | } | |
3503 | ||
3504 | buf_pos += n; | |
3505 | ||
3506 | /* If the buffer is filling up, expand it. */ | |
3507 | if (buf_alloc < buf_pos * 2) | |
3508 | { | |
3509 | buf_alloc *= 2; | |
224c3ddb | 3510 | buf = (gdb_byte *) xrealloc (buf, buf_alloc); |
db1ff28b JK |
3511 | } |
3512 | ||
3513 | QUIT; | |
3514 | } | |
f7af1fcd JK |
3515 | } |
3516 | ||
12e2a5fd | 3517 | /* See target.h. */ |
7313baad UW |
3518 | |
3519 | LONGEST | |
07c138c8 GB |
3520 | target_fileio_read_alloc (struct inferior *inf, const char *filename, |
3521 | gdb_byte **buf_p) | |
7313baad | 3522 | { |
07c138c8 | 3523 | return target_fileio_read_alloc_1 (inf, filename, buf_p, 0); |
7313baad UW |
3524 | } |
3525 | ||
db1ff28b | 3526 | /* See target.h. */ |
f7af1fcd | 3527 | |
87028b87 | 3528 | gdb::unique_xmalloc_ptr<char> |
f7af1fcd JK |
3529 | target_fileio_read_stralloc (struct inferior *inf, const char *filename) |
3530 | { | |
db1ff28b JK |
3531 | gdb_byte *buffer; |
3532 | char *bufstr; | |
3533 | LONGEST i, transferred; | |
3534 | ||
3535 | transferred = target_fileio_read_alloc_1 (inf, filename, &buffer, 1); | |
3536 | bufstr = (char *) buffer; | |
3537 | ||
3538 | if (transferred < 0) | |
87028b87 | 3539 | return gdb::unique_xmalloc_ptr<char> (nullptr); |
db1ff28b JK |
3540 | |
3541 | if (transferred == 0) | |
b02f78f9 | 3542 | return make_unique_xstrdup (""); |
db1ff28b JK |
3543 | |
3544 | bufstr[transferred] = 0; | |
3545 | ||
3546 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
3547 | for (i = strlen (bufstr); i < transferred; i++) | |
3548 | if (bufstr[i] != 0) | |
3549 | { | |
3550 | warning (_("target file %s " | |
3551 | "contained unexpected null characters"), | |
3552 | filename); | |
3553 | break; | |
3554 | } | |
3555 | ||
87028b87 | 3556 | return gdb::unique_xmalloc_ptr<char> (bufstr); |
f7af1fcd | 3557 | } |
7313baad | 3558 | |
db1ff28b | 3559 | |
e0d24f8d | 3560 | static int |
31568a15 TT |
3561 | default_region_ok_for_hw_watchpoint (struct target_ops *self, |
3562 | CORE_ADDR addr, int len) | |
e0d24f8d | 3563 | { |
f5656ead | 3564 | return (len <= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT); |
ccaa32c7 GS |
3565 | } |
3566 | ||
5009afc5 AS |
3567 | static int |
3568 | default_watchpoint_addr_within_range (struct target_ops *target, | |
3569 | CORE_ADDR addr, | |
3570 | CORE_ADDR start, int length) | |
3571 | { | |
3572 | return addr >= start && addr < start + length; | |
3573 | } | |
3574 | ||
8b06beed TT |
3575 | /* See target.h. */ |
3576 | ||
a1740ee1 PA |
3577 | target_ops * |
3578 | target_stack::find_beneath (const target_ops *t) const | |
8b06beed | 3579 | { |
a1740ee1 | 3580 | /* Look for a non-empty slot at stratum levels beneath T's. */ |
66b4deae | 3581 | for (int stratum = t->stratum () - 1; stratum >= 0; --stratum) |
91e3d1d1 AB |
3582 | if (m_stack[stratum].get () != NULL) |
3583 | return m_stack[stratum].get (); | |
8b06beed TT |
3584 | |
3585 | return NULL; | |
3586 | } | |
3587 | ||
a1740ee1 PA |
3588 | /* See target.h. */ |
3589 | ||
3590 | struct target_ops * | |
3591 | find_target_at (enum strata stratum) | |
3592 | { | |
5b6d1e4f | 3593 | return current_inferior ()->target_at (stratum); |
a1740ee1 PA |
3594 | } |
3595 | ||
c906108c | 3596 | \f |
0f48b757 PA |
3597 | |
3598 | /* See target.h */ | |
3599 | ||
3600 | void | |
3601 | target_announce_detach (int from_tty) | |
3602 | { | |
3603 | pid_t pid; | |
a121b7c1 | 3604 | const char *exec_file; |
0f48b757 PA |
3605 | |
3606 | if (!from_tty) | |
3607 | return; | |
3608 | ||
e99b03dc | 3609 | pid = inferior_ptid.pid (); |
41e321a8 TT |
3610 | exec_file = get_exec_file (0); |
3611 | if (exec_file == nullptr) | |
6cb06a8c TT |
3612 | gdb_printf ("Detaching from pid %s\n", |
3613 | target_pid_to_str (ptid_t (pid)).c_str ()); | |
41e321a8 | 3614 | else |
6cb06a8c TT |
3615 | gdb_printf (_("Detaching from program: %s, %s\n"), exec_file, |
3616 | target_pid_to_str (ptid_t (pid)).c_str ()); | |
bc521517 TT |
3617 | } |
3618 | ||
3619 | /* See target.h */ | |
3620 | ||
3621 | void | |
3622 | target_announce_attach (int from_tty, int pid) | |
3623 | { | |
3624 | if (!from_tty) | |
3625 | return; | |
3626 | ||
3627 | const char *exec_file = get_exec_file (0); | |
3628 | ||
249f1cf8 | 3629 | if (exec_file != nullptr) |
6cb06a8c TT |
3630 | gdb_printf ("Attaching to program: %s, %s\n", exec_file, |
3631 | target_pid_to_str (ptid_t (pid)).c_str ()); | |
bc521517 | 3632 | else |
6cb06a8c TT |
3633 | gdb_printf ("Attaching to %s\n", |
3634 | target_pid_to_str (ptid_t (pid)).c_str ()); | |
0f48b757 PA |
3635 | } |
3636 | ||
c906108c SS |
3637 | /* The inferior process has died. Long live the inferior! */ |
3638 | ||
3639 | void | |
fba45db2 | 3640 | generic_mourn_inferior (void) |
c906108c | 3641 | { |
00431a78 | 3642 | inferior *inf = current_inferior (); |
c906108c | 3643 | |
a0776b13 | 3644 | switch_to_no_thread (); |
7f9f62ba | 3645 | |
f59f708a PA |
3646 | /* Mark breakpoints uninserted in case something tries to delete a |
3647 | breakpoint while we delete the inferior's threads (which would | |
3648 | fail, since the inferior is long gone). */ | |
3649 | mark_breakpoints_out (); | |
3650 | ||
00431a78 PA |
3651 | if (inf->pid != 0) |
3652 | exit_inferior (inf); | |
7f9f62ba | 3653 | |
f59f708a PA |
3654 | /* Note this wipes step-resume breakpoints, so needs to be done |
3655 | after exit_inferior, which ends up referencing the step-resume | |
3656 | breakpoints through clear_thread_inferior_resources. */ | |
c906108c | 3657 | breakpoint_init_inferior (inf_exited); |
f59f708a | 3658 | |
c906108c SS |
3659 | registers_changed (); |
3660 | ||
c906108c SS |
3661 | reopen_exec_file (); |
3662 | reinit_frame_cache (); | |
3663 | ||
9a4105ab AC |
3664 | if (deprecated_detach_hook) |
3665 | deprecated_detach_hook (); | |
c906108c SS |
3666 | } |
3667 | \f | |
fd0a2a6f MK |
3668 | /* Convert a normal process ID to a string. Returns the string in a |
3669 | static buffer. */ | |
c906108c | 3670 | |
a068643d | 3671 | std::string |
39f77062 | 3672 | normal_pid_to_str (ptid_t ptid) |
c906108c | 3673 | { |
a068643d | 3674 | return string_printf ("process %d", ptid.pid ()); |
c906108c SS |
3675 | } |
3676 | ||
a068643d | 3677 | static std::string |
770234d3 | 3678 | default_pid_to_str (struct target_ops *ops, ptid_t ptid) |
117de6a9 PA |
3679 | { |
3680 | return normal_pid_to_str (ptid); | |
3681 | } | |
3682 | ||
9b4eba8e HZ |
3683 | /* Error-catcher for target_find_memory_regions. */ |
3684 | static int | |
2e73927c TT |
3685 | dummy_find_memory_regions (struct target_ops *self, |
3686 | find_memory_region_ftype ignore1, void *ignore2) | |
be4d1333 | 3687 | { |
9b4eba8e | 3688 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3689 | return 0; |
3690 | } | |
3691 | ||
9b4eba8e | 3692 | /* Error-catcher for target_make_corefile_notes. */ |
24f5300a | 3693 | static gdb::unique_xmalloc_ptr<char> |
fc6691b2 TT |
3694 | dummy_make_corefile_notes (struct target_ops *self, |
3695 | bfd *ignore1, int *ignore2) | |
be4d1333 | 3696 | { |
9b4eba8e | 3697 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3698 | return NULL; |
3699 | } | |
3700 | ||
f6ac5f3d PA |
3701 | #include "target-delegates.c" |
3702 | ||
06b5b831 TT |
3703 | /* The initial current target, so that there is always a semi-valid |
3704 | current target. */ | |
3705 | ||
3706 | static dummy_target the_dummy_target; | |
c906108c | 3707 | |
5b6d1e4f PA |
3708 | /* See target.h. */ |
3709 | ||
3710 | target_ops * | |
3711 | get_dummy_target () | |
3712 | { | |
3713 | return &the_dummy_target; | |
3714 | } | |
3715 | ||
d9f719f1 PA |
3716 | static const target_info dummy_target_info = { |
3717 | "None", | |
3718 | N_("None"), | |
3719 | "" | |
3720 | }; | |
3721 | ||
66b4deae PA |
3722 | strata |
3723 | dummy_target::stratum () const | |
f6ac5f3d | 3724 | { |
66b4deae | 3725 | return dummy_stratum; |
f6ac5f3d PA |
3726 | } |
3727 | ||
66b4deae PA |
3728 | strata |
3729 | debug_target::stratum () const | |
f6ac5f3d | 3730 | { |
66b4deae | 3731 | return debug_stratum; |
f6ac5f3d PA |
3732 | } |
3733 | ||
d9f719f1 PA |
3734 | const target_info & |
3735 | dummy_target::info () const | |
f6ac5f3d | 3736 | { |
d9f719f1 | 3737 | return dummy_target_info; |
f6ac5f3d PA |
3738 | } |
3739 | ||
d9f719f1 PA |
3740 | const target_info & |
3741 | debug_target::info () const | |
f6ac5f3d | 3742 | { |
b6a8c27b | 3743 | return beneath ()->info (); |
f6ac5f3d PA |
3744 | } |
3745 | ||
c906108c | 3746 | \f |
c906108c | 3747 | |
f1c07ab0 | 3748 | void |
460014f5 | 3749 | target_close (struct target_ops *targ) |
f1c07ab0 | 3750 | { |
27f0a431 SM |
3751 | for (inferior *inf : all_inferiors ()) |
3752 | gdb_assert (!inf->target_is_pushed (targ)); | |
7fdc1521 | 3753 | |
20db9c52 PA |
3754 | fileio_handles_invalidate_target (targ); |
3755 | ||
f6ac5f3d | 3756 | targ->close (); |
947b8855 PA |
3757 | |
3758 | if (targetdebug) | |
6cb06a8c | 3759 | gdb_printf (gdb_stdlog, "target_close ()\n"); |
f1c07ab0 AC |
3760 | } |
3761 | ||
28439f5e PA |
3762 | int |
3763 | target_thread_alive (ptid_t ptid) | |
c906108c | 3764 | { |
328d42d8 | 3765 | return current_inferior ()->top_target ()->thread_alive (ptid); |
28439f5e PA |
3766 | } |
3767 | ||
3768 | void | |
e8032dde | 3769 | target_update_thread_list (void) |
28439f5e | 3770 | { |
328d42d8 | 3771 | current_inferior ()->top_target ()->update_thread_list (); |
c906108c SS |
3772 | } |
3773 | ||
d914c394 SS |
3774 | void |
3775 | target_stop (ptid_t ptid) | |
3776 | { | |
1192f124 SM |
3777 | process_stratum_target *proc_target = current_inferior ()->process_target (); |
3778 | ||
3779 | gdb_assert (!proc_target->commit_resumed_state); | |
3780 | ||
d914c394 SS |
3781 | if (!may_stop) |
3782 | { | |
3783 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3784 | return; | |
3785 | } | |
3786 | ||
328d42d8 | 3787 | current_inferior ()->top_target ()->stop (ptid); |
d914c394 SS |
3788 | } |
3789 | ||
bfedc46a | 3790 | void |
e671cd59 | 3791 | target_interrupt () |
bfedc46a PA |
3792 | { |
3793 | if (!may_stop) | |
3794 | { | |
3795 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3796 | return; | |
3797 | } | |
3798 | ||
328d42d8 | 3799 | current_inferior ()->top_target ()->interrupt (); |
bfedc46a PA |
3800 | } |
3801 | ||
abc56d60 PA |
3802 | /* See target.h. */ |
3803 | ||
93692b58 PA |
3804 | void |
3805 | target_pass_ctrlc (void) | |
3806 | { | |
5b6d1e4f PA |
3807 | /* Pass the Ctrl-C to the first target that has a thread |
3808 | running. */ | |
3809 | for (inferior *inf : all_inferiors ()) | |
3810 | { | |
3811 | target_ops *proc_target = inf->process_target (); | |
3812 | if (proc_target == NULL) | |
3813 | continue; | |
3814 | ||
43667cc6 | 3815 | for (thread_info *thr : inf->non_exited_threads ()) |
5b6d1e4f PA |
3816 | { |
3817 | /* A thread can be THREAD_STOPPED and executing, while | |
3818 | running an infcall. */ | |
611841bb | 3819 | if (thr->state == THREAD_RUNNING || thr->executing ()) |
5b6d1e4f PA |
3820 | { |
3821 | /* We can get here quite deep in target layers. Avoid | |
3822 | switching thread context or anything that would | |
3823 | communicate with the target (e.g., to fetch | |
3824 | registers), or flushing e.g., the frame cache. We | |
3825 | just switch inferior in order to be able to call | |
3826 | through the target_stack. */ | |
3827 | scoped_restore_current_inferior restore_inferior; | |
3828 | set_current_inferior (inf); | |
328d42d8 | 3829 | current_inferior ()->top_target ()->pass_ctrlc (); |
5b6d1e4f PA |
3830 | return; |
3831 | } | |
3832 | } | |
3833 | } | |
93692b58 PA |
3834 | } |
3835 | ||
3836 | /* See target.h. */ | |
3837 | ||
3838 | void | |
3839 | default_target_pass_ctrlc (struct target_ops *ops) | |
3840 | { | |
e671cd59 | 3841 | target_interrupt (); |
93692b58 PA |
3842 | } |
3843 | ||
f8c1d06b GB |
3844 | /* See target/target.h. */ |
3845 | ||
3846 | void | |
03f4463b | 3847 | target_stop_and_wait (ptid_t ptid) |
f8c1d06b GB |
3848 | { |
3849 | struct target_waitstatus status; | |
491144b5 | 3850 | bool was_non_stop = non_stop; |
f8c1d06b | 3851 | |
491144b5 | 3852 | non_stop = true; |
f8c1d06b GB |
3853 | target_stop (ptid); |
3854 | ||
f8c1d06b GB |
3855 | target_wait (ptid, &status, 0); |
3856 | ||
3857 | non_stop = was_non_stop; | |
3858 | } | |
3859 | ||
3860 | /* See target/target.h. */ | |
3861 | ||
3862 | void | |
03f4463b | 3863 | target_continue_no_signal (ptid_t ptid) |
f8c1d06b GB |
3864 | { |
3865 | target_resume (ptid, 0, GDB_SIGNAL_0); | |
3866 | } | |
3867 | ||
049a8570 SDJ |
3868 | /* See target/target.h. */ |
3869 | ||
3870 | void | |
3871 | target_continue (ptid_t ptid, enum gdb_signal signal) | |
3872 | { | |
3873 | target_resume (ptid, 0, signal); | |
3874 | } | |
3875 | ||
fdbac7d8 | 3876 | /* Concatenate ELEM to LIST, a comma-separated list. */ |
09826ec5 | 3877 | |
09ce46f2 SM |
3878 | static void |
3879 | str_comma_list_concat_elem (std::string *list, const char *elem) | |
09826ec5 | 3880 | { |
09ce46f2 SM |
3881 | if (!list->empty ()) |
3882 | list->append (", "); | |
3883 | ||
3884 | list->append (elem); | |
09826ec5 PA |
3885 | } |
3886 | ||
3887 | /* Helper for target_options_to_string. If OPT is present in | |
3888 | TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET. | |
09ce46f2 | 3889 | OPT is removed from TARGET_OPTIONS. */ |
09826ec5 | 3890 | |
09ce46f2 | 3891 | static void |
b60cea74 TT |
3892 | do_option (target_wait_flags *target_options, std::string *ret, |
3893 | target_wait_flag opt, const char *opt_str) | |
09826ec5 PA |
3894 | { |
3895 | if ((*target_options & opt) != 0) | |
3896 | { | |
09ce46f2 | 3897 | str_comma_list_concat_elem (ret, opt_str); |
09826ec5 PA |
3898 | *target_options &= ~opt; |
3899 | } | |
09826ec5 PA |
3900 | } |
3901 | ||
fdbac7d8 SM |
3902 | /* See target.h. */ |
3903 | ||
09ce46f2 | 3904 | std::string |
b60cea74 | 3905 | target_options_to_string (target_wait_flags target_options) |
09826ec5 | 3906 | { |
09ce46f2 | 3907 | std::string ret; |
09826ec5 PA |
3908 | |
3909 | #define DO_TARG_OPTION(OPT) \ | |
09ce46f2 | 3910 | do_option (&target_options, &ret, OPT, #OPT) |
09826ec5 PA |
3911 | |
3912 | DO_TARG_OPTION (TARGET_WNOHANG); | |
3913 | ||
3914 | if (target_options != 0) | |
09ce46f2 | 3915 | str_comma_list_concat_elem (&ret, "unknown???"); |
09826ec5 | 3916 | |
09826ec5 PA |
3917 | return ret; |
3918 | } | |
3919 | ||
28439f5e PA |
3920 | void |
3921 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 3922 | { |
328d42d8 | 3923 | current_inferior ()->top_target ()->fetch_registers (regcache, regno); |
ad5989bd | 3924 | if (targetdebug) |
ef79d9a3 | 3925 | regcache->debug_print_register ("target_fetch_registers", regno); |
c906108c SS |
3926 | } |
3927 | ||
28439f5e PA |
3928 | void |
3929 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 3930 | { |
d914c394 SS |
3931 | if (!may_write_registers) |
3932 | error (_("Writing to registers is not allowed (regno %d)"), regno); | |
3933 | ||
328d42d8 | 3934 | current_inferior ()->top_target ()->store_registers (regcache, regno); |
6b84065d | 3935 | if (targetdebug) |
28439f5e | 3936 | { |
ef79d9a3 | 3937 | regcache->debug_print_register ("target_store_registers", regno); |
28439f5e | 3938 | } |
c906108c SS |
3939 | } |
3940 | ||
dc146f7c VP |
3941 | int |
3942 | target_core_of_thread (ptid_t ptid) | |
3943 | { | |
328d42d8 | 3944 | return current_inferior ()->top_target ()->core_of_thread (ptid); |
dc146f7c VP |
3945 | } |
3946 | ||
936d2992 PA |
3947 | int |
3948 | simple_verify_memory (struct target_ops *ops, | |
3949 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
3950 | { | |
3951 | LONGEST total_xfered = 0; | |
3952 | ||
3953 | while (total_xfered < size) | |
3954 | { | |
3955 | ULONGEST xfered_len; | |
3956 | enum target_xfer_status status; | |
3957 | gdb_byte buf[1024]; | |
768adc05 | 3958 | ULONGEST howmuch = std::min<ULONGEST> (sizeof (buf), size - total_xfered); |
936d2992 PA |
3959 | |
3960 | status = target_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
3961 | buf, NULL, lma + total_xfered, howmuch, | |
3962 | &xfered_len); | |
3963 | if (status == TARGET_XFER_OK | |
3964 | && memcmp (data + total_xfered, buf, xfered_len) == 0) | |
3965 | { | |
3966 | total_xfered += xfered_len; | |
3967 | QUIT; | |
3968 | } | |
3969 | else | |
3970 | return 0; | |
3971 | } | |
3972 | return 1; | |
3973 | } | |
3974 | ||
3975 | /* Default implementation of memory verification. */ | |
3976 | ||
3977 | static int | |
3978 | default_verify_memory (struct target_ops *self, | |
3979 | const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3980 | { | |
3981 | /* Start over from the top of the target stack. */ | |
328d42d8 | 3982 | return simple_verify_memory (current_inferior ()->top_target (), |
936d2992 PA |
3983 | data, memaddr, size); |
3984 | } | |
3985 | ||
4a5e7a5b PA |
3986 | int |
3987 | target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3988 | { | |
328d42d8 SM |
3989 | target_ops *target = current_inferior ()->top_target (); |
3990 | ||
3991 | return target->verify_memory (data, memaddr, size); | |
4a5e7a5b PA |
3992 | } |
3993 | ||
9c06b0b4 TJB |
3994 | /* The documentation for this function is in its prototype declaration in |
3995 | target.h. */ | |
3996 | ||
3997 | int | |
f4b0a671 SM |
3998 | target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, |
3999 | enum target_hw_bp_type rw) | |
9c06b0b4 | 4000 | { |
328d42d8 SM |
4001 | target_ops *target = current_inferior ()->top_target (); |
4002 | ||
4003 | return target->insert_mask_watchpoint (addr, mask, rw); | |
9c06b0b4 TJB |
4004 | } |
4005 | ||
4006 | /* The documentation for this function is in its prototype declaration in | |
4007 | target.h. */ | |
4008 | ||
4009 | int | |
f4b0a671 SM |
4010 | target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, |
4011 | enum target_hw_bp_type rw) | |
9c06b0b4 | 4012 | { |
328d42d8 SM |
4013 | target_ops *target = current_inferior ()->top_target (); |
4014 | ||
4015 | return target->remove_mask_watchpoint (addr, mask, rw); | |
9c06b0b4 TJB |
4016 | } |
4017 | ||
4018 | /* The documentation for this function is in its prototype declaration | |
4019 | in target.h. */ | |
4020 | ||
4021 | int | |
4022 | target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask) | |
4023 | { | |
328d42d8 SM |
4024 | target_ops *target = current_inferior ()->top_target (); |
4025 | ||
4026 | return target->masked_watch_num_registers (addr, mask); | |
9c06b0b4 TJB |
4027 | } |
4028 | ||
f1310107 TJB |
4029 | /* The documentation for this function is in its prototype declaration |
4030 | in target.h. */ | |
4031 | ||
4032 | int | |
4033 | target_ranged_break_num_registers (void) | |
4034 | { | |
328d42d8 | 4035 | return current_inferior ()->top_target ()->ranged_break_num_registers (); |
f1310107 TJB |
4036 | } |
4037 | ||
02d27625 MM |
4038 | /* See target.h. */ |
4039 | ||
02d27625 | 4040 | struct btrace_target_info * |
696c0d5e | 4041 | target_enable_btrace (thread_info *tp, const struct btrace_config *conf) |
02d27625 | 4042 | { |
696c0d5e | 4043 | return current_inferior ()->top_target ()->enable_btrace (tp, conf); |
02d27625 MM |
4044 | } |
4045 | ||
4046 | /* See target.h. */ | |
4047 | ||
4048 | void | |
4049 | target_disable_btrace (struct btrace_target_info *btinfo) | |
4050 | { | |
328d42d8 | 4051 | current_inferior ()->top_target ()->disable_btrace (btinfo); |
02d27625 MM |
4052 | } |
4053 | ||
4054 | /* See target.h. */ | |
4055 | ||
4056 | void | |
4057 | target_teardown_btrace (struct btrace_target_info *btinfo) | |
4058 | { | |
328d42d8 | 4059 | current_inferior ()->top_target ()->teardown_btrace (btinfo); |
02d27625 MM |
4060 | } |
4061 | ||
4062 | /* See target.h. */ | |
4063 | ||
969c39fb | 4064 | enum btrace_error |
734b0e4b | 4065 | target_read_btrace (struct btrace_data *btrace, |
969c39fb | 4066 | struct btrace_target_info *btinfo, |
02d27625 MM |
4067 | enum btrace_read_type type) |
4068 | { | |
328d42d8 SM |
4069 | target_ops *target = current_inferior ()->top_target (); |
4070 | ||
4071 | return target->read_btrace (btrace, btinfo, type); | |
02d27625 MM |
4072 | } |
4073 | ||
d02ed0bb MM |
4074 | /* See target.h. */ |
4075 | ||
f4abbc16 MM |
4076 | const struct btrace_config * |
4077 | target_btrace_conf (const struct btrace_target_info *btinfo) | |
4078 | { | |
328d42d8 | 4079 | return current_inferior ()->top_target ()->btrace_conf (btinfo); |
f4abbc16 MM |
4080 | } |
4081 | ||
4082 | /* See target.h. */ | |
4083 | ||
7c1687a9 MM |
4084 | void |
4085 | target_stop_recording (void) | |
4086 | { | |
328d42d8 | 4087 | current_inferior ()->top_target ()->stop_recording (); |
7c1687a9 MM |
4088 | } |
4089 | ||
4090 | /* See target.h. */ | |
4091 | ||
d02ed0bb | 4092 | void |
85e1311a | 4093 | target_save_record (const char *filename) |
d02ed0bb | 4094 | { |
328d42d8 | 4095 | current_inferior ()->top_target ()->save_record (filename); |
d02ed0bb MM |
4096 | } |
4097 | ||
4098 | /* See target.h. */ | |
4099 | ||
4100 | int | |
f6ac5f3d | 4101 | target_supports_delete_record () |
d02ed0bb | 4102 | { |
328d42d8 | 4103 | return current_inferior ()->top_target ()->supports_delete_record (); |
d02ed0bb MM |
4104 | } |
4105 | ||
4106 | /* See target.h. */ | |
4107 | ||
4108 | void | |
4109 | target_delete_record (void) | |
4110 | { | |
328d42d8 | 4111 | current_inferior ()->top_target ()->delete_record (); |
d02ed0bb MM |
4112 | } |
4113 | ||
4114 | /* See target.h. */ | |
4115 | ||
b158a20f TW |
4116 | enum record_method |
4117 | target_record_method (ptid_t ptid) | |
4118 | { | |
328d42d8 | 4119 | return current_inferior ()->top_target ()->record_method (ptid); |
b158a20f TW |
4120 | } |
4121 | ||
4122 | /* See target.h. */ | |
4123 | ||
d02ed0bb | 4124 | int |
a52eab48 | 4125 | target_record_is_replaying (ptid_t ptid) |
d02ed0bb | 4126 | { |
328d42d8 | 4127 | return current_inferior ()->top_target ()->record_is_replaying (ptid); |
d02ed0bb MM |
4128 | } |
4129 | ||
4130 | /* See target.h. */ | |
4131 | ||
7ff27e9b MM |
4132 | int |
4133 | target_record_will_replay (ptid_t ptid, int dir) | |
4134 | { | |
328d42d8 | 4135 | return current_inferior ()->top_target ()->record_will_replay (ptid, dir); |
7ff27e9b MM |
4136 | } |
4137 | ||
4138 | /* See target.h. */ | |
4139 | ||
797094dd MM |
4140 | void |
4141 | target_record_stop_replaying (void) | |
4142 | { | |
328d42d8 | 4143 | current_inferior ()->top_target ()->record_stop_replaying (); |
797094dd MM |
4144 | } |
4145 | ||
4146 | /* See target.h. */ | |
4147 | ||
d02ed0bb MM |
4148 | void |
4149 | target_goto_record_begin (void) | |
4150 | { | |
328d42d8 | 4151 | current_inferior ()->top_target ()->goto_record_begin (); |
d02ed0bb MM |
4152 | } |
4153 | ||
4154 | /* See target.h. */ | |
4155 | ||
4156 | void | |
4157 | target_goto_record_end (void) | |
4158 | { | |
328d42d8 | 4159 | current_inferior ()->top_target ()->goto_record_end (); |
d02ed0bb MM |
4160 | } |
4161 | ||
4162 | /* See target.h. */ | |
4163 | ||
4164 | void | |
4165 | target_goto_record (ULONGEST insn) | |
4166 | { | |
328d42d8 | 4167 | current_inferior ()->top_target ()->goto_record (insn); |
d02ed0bb MM |
4168 | } |
4169 | ||
67c86d06 MM |
4170 | /* See target.h. */ |
4171 | ||
4172 | void | |
9a24775b | 4173 | target_insn_history (int size, gdb_disassembly_flags flags) |
67c86d06 | 4174 | { |
328d42d8 | 4175 | current_inferior ()->top_target ()->insn_history (size, flags); |
67c86d06 MM |
4176 | } |
4177 | ||
4178 | /* See target.h. */ | |
4179 | ||
4180 | void | |
9a24775b PA |
4181 | target_insn_history_from (ULONGEST from, int size, |
4182 | gdb_disassembly_flags flags) | |
67c86d06 | 4183 | { |
328d42d8 | 4184 | current_inferior ()->top_target ()->insn_history_from (from, size, flags); |
67c86d06 MM |
4185 | } |
4186 | ||
4187 | /* See target.h. */ | |
4188 | ||
4189 | void | |
9a24775b PA |
4190 | target_insn_history_range (ULONGEST begin, ULONGEST end, |
4191 | gdb_disassembly_flags flags) | |
67c86d06 | 4192 | { |
328d42d8 | 4193 | current_inferior ()->top_target ()->insn_history_range (begin, end, flags); |
67c86d06 MM |
4194 | } |
4195 | ||
15984c13 MM |
4196 | /* See target.h. */ |
4197 | ||
4198 | void | |
0cb7c7b0 | 4199 | target_call_history (int size, record_print_flags flags) |
15984c13 | 4200 | { |
328d42d8 | 4201 | current_inferior ()->top_target ()->call_history (size, flags); |
15984c13 MM |
4202 | } |
4203 | ||
4204 | /* See target.h. */ | |
4205 | ||
4206 | void | |
0cb7c7b0 | 4207 | target_call_history_from (ULONGEST begin, int size, record_print_flags flags) |
15984c13 | 4208 | { |
328d42d8 | 4209 | current_inferior ()->top_target ()->call_history_from (begin, size, flags); |
15984c13 MM |
4210 | } |
4211 | ||
4212 | /* See target.h. */ | |
4213 | ||
4214 | void | |
0cb7c7b0 | 4215 | target_call_history_range (ULONGEST begin, ULONGEST end, record_print_flags flags) |
15984c13 | 4216 | { |
328d42d8 | 4217 | current_inferior ()->top_target ()->call_history_range (begin, end, flags); |
15984c13 MM |
4218 | } |
4219 | ||
ea001bdc MM |
4220 | /* See target.h. */ |
4221 | ||
4222 | const struct frame_unwind * | |
4223 | target_get_unwinder (void) | |
4224 | { | |
328d42d8 | 4225 | return current_inferior ()->top_target ()->get_unwinder (); |
ea001bdc MM |
4226 | } |
4227 | ||
4228 | /* See target.h. */ | |
4229 | ||
4230 | const struct frame_unwind * | |
4231 | target_get_tailcall_unwinder (void) | |
4232 | { | |
328d42d8 | 4233 | return current_inferior ()->top_target ()->get_tailcall_unwinder (); |
ea001bdc MM |
4234 | } |
4235 | ||
5fff78c4 MM |
4236 | /* See target.h. */ |
4237 | ||
4238 | void | |
4239 | target_prepare_to_generate_core (void) | |
4240 | { | |
328d42d8 | 4241 | current_inferior ()->top_target ()->prepare_to_generate_core (); |
5fff78c4 MM |
4242 | } |
4243 | ||
4244 | /* See target.h. */ | |
4245 | ||
4246 | void | |
4247 | target_done_generating_core (void) | |
4248 | { | |
328d42d8 | 4249 | current_inferior ()->top_target ()->done_generating_core (); |
5fff78c4 MM |
4250 | } |
4251 | ||
c906108c | 4252 | \f |
c5aa993b JM |
4253 | |
4254 | static char targ_desc[] = | |
3e43a32a MS |
4255 | "Names of targets and files being debugged.\nShows the entire \ |
4256 | stack of targets currently in use (including the exec-file,\n\ | |
c906108c SS |
4257 | core-file, and process, if any), as well as the symbol file name."; |
4258 | ||
a53f3625 | 4259 | static void |
a30bf1f1 TT |
4260 | default_rcmd (struct target_ops *self, const char *command, |
4261 | struct ui_file *output) | |
a53f3625 TT |
4262 | { |
4263 | error (_("\"monitor\" command not supported by this target.")); | |
4264 | } | |
4265 | ||
96baa820 | 4266 | static void |
0b39b52e | 4267 | do_monitor_command (const char *cmd, int from_tty) |
96baa820 | 4268 | { |
96baa820 JM |
4269 | target_rcmd (cmd, gdb_stdtarg); |
4270 | } | |
4271 | ||
78cbbba8 LM |
4272 | /* Erases all the memory regions marked as flash. CMD and FROM_TTY are |
4273 | ignored. */ | |
4274 | ||
4275 | void | |
0b39b52e | 4276 | flash_erase_command (const char *cmd, int from_tty) |
78cbbba8 LM |
4277 | { |
4278 | /* Used to communicate termination of flash operations to the target. */ | |
4279 | bool found_flash_region = false; | |
78cbbba8 LM |
4280 | struct gdbarch *gdbarch = target_gdbarch (); |
4281 | ||
a664f67e | 4282 | std::vector<mem_region> mem_regions = target_memory_map (); |
78cbbba8 LM |
4283 | |
4284 | /* Iterate over all memory regions. */ | |
a664f67e | 4285 | for (const mem_region &m : mem_regions) |
78cbbba8 | 4286 | { |
78cbbba8 | 4287 | /* Is this a flash memory region? */ |
a664f67e | 4288 | if (m.attrib.mode == MEM_FLASH) |
dda83cd7 SM |
4289 | { |
4290 | found_flash_region = true; | |
4291 | target_flash_erase (m.lo, m.hi - m.lo); | |
78cbbba8 | 4292 | |
76f9c9cf | 4293 | ui_out_emit_tuple tuple_emitter (current_uiout, "erased-regions"); |
78cbbba8 | 4294 | |
dda83cd7 SM |
4295 | current_uiout->message (_("Erasing flash memory region at address ")); |
4296 | current_uiout->field_core_addr ("address", gdbarch, m.lo); | |
4297 | current_uiout->message (", size = "); | |
4298 | current_uiout->field_string ("size", hex_string (m.hi - m.lo)); | |
4299 | current_uiout->message ("\n"); | |
4300 | } | |
78cbbba8 LM |
4301 | } |
4302 | ||
4303 | /* Did we do any flash operations? If so, we need to finalize them. */ | |
4304 | if (found_flash_region) | |
4305 | target_flash_done (); | |
4306 | else | |
4307 | current_uiout->message (_("No flash memory regions found.\n")); | |
4308 | } | |
4309 | ||
87680a14 JB |
4310 | /* Print the name of each layers of our target stack. */ |
4311 | ||
4312 | static void | |
d3cb6b99 | 4313 | maintenance_print_target_stack (const char *cmd, int from_tty) |
87680a14 | 4314 | { |
6cb06a8c | 4315 | gdb_printf (_("The current target stack is:\n")); |
87680a14 | 4316 | |
328d42d8 SM |
4317 | for (target_ops *t = current_inferior ()->top_target (); |
4318 | t != NULL; | |
4319 | t = t->beneath ()) | |
87680a14 | 4320 | { |
66b4deae | 4321 | if (t->stratum () == debug_stratum) |
f6ac5f3d | 4322 | continue; |
6cb06a8c | 4323 | gdb_printf (" - %s (%s)\n", t->shortname (), t->longname ()); |
87680a14 JB |
4324 | } |
4325 | } | |
4326 | ||
372316f1 PA |
4327 | /* See target.h. */ |
4328 | ||
4329 | void | |
4a570176 | 4330 | target_async (bool enable) |
372316f1 | 4331 | { |
bf94662b AB |
4332 | /* If we are trying to enable async mode then it must be the case that |
4333 | async mode is possible for this target. */ | |
4334 | gdb_assert (!enable || target_can_async_p ()); | |
372316f1 | 4335 | infrun_async (enable); |
328d42d8 | 4336 | current_inferior ()->top_target ()->async (enable); |
372316f1 PA |
4337 | } |
4338 | ||
65706a29 PA |
4339 | /* See target.h. */ |
4340 | ||
4341 | void | |
4342 | target_thread_events (int enable) | |
4343 | { | |
328d42d8 | 4344 | current_inferior ()->top_target ()->thread_events (enable); |
65706a29 PA |
4345 | } |
4346 | ||
329ea579 PA |
4347 | /* Controls if targets can report that they can/are async. This is |
4348 | just for maintainers to use when debugging gdb. */ | |
491144b5 | 4349 | bool target_async_permitted = true; |
c6ebd6cf | 4350 | |
c6ebd6cf | 4351 | static void |
fdf1350d | 4352 | set_maint_target_async (bool permitted) |
c6ebd6cf | 4353 | { |
c35b1492 | 4354 | if (have_live_inferiors ()) |
fdf1350d | 4355 | error (_("Cannot change this setting while the inferior is running.")); |
c6ebd6cf | 4356 | |
fdf1350d SM |
4357 | target_async_permitted = permitted; |
4358 | } | |
4359 | ||
4360 | static bool | |
4361 | get_maint_target_async () | |
4362 | { | |
4363 | return target_async_permitted; | |
c6ebd6cf VP |
4364 | } |
4365 | ||
4366 | static void | |
fdf1350d SM |
4367 | show_maint_target_async (ui_file *file, int from_tty, |
4368 | cmd_list_element *c, const char *value) | |
c6ebd6cf | 4369 | { |
6cb06a8c TT |
4370 | gdb_printf (file, |
4371 | _("Controlling the inferior in " | |
4372 | "asynchronous mode is %s.\n"), value); | |
c6ebd6cf VP |
4373 | } |
4374 | ||
fbea99ea PA |
4375 | /* Return true if the target operates in non-stop mode even with "set |
4376 | non-stop off". */ | |
4377 | ||
4378 | static int | |
4379 | target_always_non_stop_p (void) | |
4380 | { | |
328d42d8 | 4381 | return current_inferior ()->top_target ()->always_non_stop_p (); |
fbea99ea PA |
4382 | } |
4383 | ||
4384 | /* See target.h. */ | |
4385 | ||
6ff267e1 SM |
4386 | bool |
4387 | target_is_non_stop_p () | |
fbea99ea | 4388 | { |
e5b9b39f PA |
4389 | return ((non_stop |
4390 | || target_non_stop_enabled == AUTO_BOOLEAN_TRUE | |
4391 | || (target_non_stop_enabled == AUTO_BOOLEAN_AUTO | |
4392 | && target_always_non_stop_p ())) | |
4393 | && target_can_async_p ()); | |
fbea99ea PA |
4394 | } |
4395 | ||
a0714d30 TBA |
4396 | /* See target.h. */ |
4397 | ||
4398 | bool | |
4399 | exists_non_stop_target () | |
4400 | { | |
4401 | if (target_is_non_stop_p ()) | |
4402 | return true; | |
4403 | ||
4404 | scoped_restore_current_thread restore_thread; | |
4405 | ||
4406 | for (inferior *inf : all_inferiors ()) | |
4407 | { | |
4408 | switch_to_inferior_no_thread (inf); | |
4409 | if (target_is_non_stop_p ()) | |
4410 | return true; | |
4411 | } | |
4412 | ||
4413 | return false; | |
4414 | } | |
4415 | ||
fbea99ea PA |
4416 | /* Controls if targets can report that they always run in non-stop |
4417 | mode. This is just for maintainers to use when debugging gdb. */ | |
4418 | enum auto_boolean target_non_stop_enabled = AUTO_BOOLEAN_AUTO; | |
4419 | ||
fdf1350d | 4420 | /* Set callback for maint target-non-stop setting. */ |
fbea99ea PA |
4421 | |
4422 | static void | |
fdf1350d | 4423 | set_maint_target_non_stop (auto_boolean enabled) |
fbea99ea PA |
4424 | { |
4425 | if (have_live_inferiors ()) | |
fdf1350d | 4426 | error (_("Cannot change this setting while the inferior is running.")); |
fbea99ea | 4427 | |
fdf1350d | 4428 | target_non_stop_enabled = enabled; |
fbea99ea PA |
4429 | } |
4430 | ||
fdf1350d SM |
4431 | /* Get callback for maint target-non-stop setting. */ |
4432 | ||
4433 | static auto_boolean | |
4434 | get_maint_target_non_stop () | |
4435 | { | |
4436 | return target_non_stop_enabled; | |
4437 | } | |
fbea99ea PA |
4438 | |
4439 | static void | |
fdf1350d SM |
4440 | show_maint_target_non_stop (ui_file *file, int from_tty, |
4441 | cmd_list_element *c, const char *value) | |
fbea99ea PA |
4442 | { |
4443 | if (target_non_stop_enabled == AUTO_BOOLEAN_AUTO) | |
6cb06a8c TT |
4444 | gdb_printf (file, |
4445 | _("Whether the target is always in non-stop mode " | |
4446 | "is %s (currently %s).\n"), value, | |
4447 | target_always_non_stop_p () ? "on" : "off"); | |
fbea99ea | 4448 | else |
6cb06a8c TT |
4449 | gdb_printf (file, |
4450 | _("Whether the target is always in non-stop mode " | |
4451 | "is %s.\n"), value); | |
fbea99ea PA |
4452 | } |
4453 | ||
d914c394 SS |
4454 | /* Temporary copies of permission settings. */ |
4455 | ||
491144b5 CB |
4456 | static bool may_write_registers_1 = true; |
4457 | static bool may_write_memory_1 = true; | |
4458 | static bool may_insert_breakpoints_1 = true; | |
4459 | static bool may_insert_tracepoints_1 = true; | |
4460 | static bool may_insert_fast_tracepoints_1 = true; | |
4461 | static bool may_stop_1 = true; | |
d914c394 SS |
4462 | |
4463 | /* Make the user-set values match the real values again. */ | |
4464 | ||
4465 | void | |
4466 | update_target_permissions (void) | |
4467 | { | |
4468 | may_write_registers_1 = may_write_registers; | |
4469 | may_write_memory_1 = may_write_memory; | |
4470 | may_insert_breakpoints_1 = may_insert_breakpoints; | |
4471 | may_insert_tracepoints_1 = may_insert_tracepoints; | |
4472 | may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints; | |
4473 | may_stop_1 = may_stop; | |
4474 | } | |
4475 | ||
4476 | /* The one function handles (most of) the permission flags in the same | |
4477 | way. */ | |
4478 | ||
4479 | static void | |
eb4c3f4a | 4480 | set_target_permissions (const char *args, int from_tty, |
d914c394 SS |
4481 | struct cmd_list_element *c) |
4482 | { | |
55f6301a | 4483 | if (target_has_execution ()) |
d914c394 SS |
4484 | { |
4485 | update_target_permissions (); | |
4486 | error (_("Cannot change this setting while the inferior is running.")); | |
4487 | } | |
4488 | ||
4489 | /* Make the real values match the user-changed values. */ | |
4490 | may_write_registers = may_write_registers_1; | |
4491 | may_insert_breakpoints = may_insert_breakpoints_1; | |
4492 | may_insert_tracepoints = may_insert_tracepoints_1; | |
4493 | may_insert_fast_tracepoints = may_insert_fast_tracepoints_1; | |
4494 | may_stop = may_stop_1; | |
4495 | update_observer_mode (); | |
4496 | } | |
4497 | ||
4498 | /* Set memory write permission independently of observer mode. */ | |
4499 | ||
4500 | static void | |
eb4c3f4a | 4501 | set_write_memory_permission (const char *args, int from_tty, |
d914c394 SS |
4502 | struct cmd_list_element *c) |
4503 | { | |
4504 | /* Make the real values match the user-changed values. */ | |
4505 | may_write_memory = may_write_memory_1; | |
4506 | update_observer_mode (); | |
4507 | } | |
4508 | ||
6c265988 SM |
4509 | void _initialize_target (); |
4510 | ||
c906108c | 4511 | void |
5b6d1e4f | 4512 | _initialize_target () |
c906108c | 4513 | { |
f6ac5f3d | 4514 | the_debug_target = new debug_target (); |
c906108c | 4515 | |
11db9430 SM |
4516 | add_info ("target", info_target_command, targ_desc); |
4517 | add_info ("files", info_target_command, targ_desc); | |
c906108c | 4518 | |
ccce17b0 | 4519 | add_setshow_zuinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
85c07804 AC |
4520 | Set target debugging."), _("\ |
4521 | Show target debugging."), _("\ | |
333dabeb | 4522 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
3cecbbbe TT |
4523 | verbose."), |
4524 | set_targetdebug, | |
ccce17b0 YQ |
4525 | show_targetdebug, |
4526 | &setdebuglist, &showdebuglist); | |
3a11626d | 4527 | |
2bc416ba | 4528 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
4529 | &trust_readonly, _("\ |
4530 | Set mode for reading from readonly sections."), _("\ | |
4531 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
4532 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
4533 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 4534 | result in significant performance improvement for remote targets."), |
2c5b56ce | 4535 | NULL, |
920d2a44 | 4536 | show_trust_readonly, |
e707bbc2 | 4537 | &setlist, &showlist); |
96baa820 JM |
4538 | |
4539 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 4540 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 4541 | |
87680a14 | 4542 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
dda83cd7 SM |
4543 | _("Print the name of each layer of the internal target stack."), |
4544 | &maintenanceprintlist); | |
87680a14 | 4545 | |
c6ebd6cf | 4546 | add_setshow_boolean_cmd ("target-async", no_class, |
fdf1350d | 4547 | _("\ |
c6ebd6cf VP |
4548 | Set whether gdb controls the inferior in asynchronous mode."), _("\ |
4549 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
4550 | Tells gdb whether to control the inferior in asynchronous mode."), | |
fdf1350d SM |
4551 | set_maint_target_async, |
4552 | get_maint_target_async, | |
4553 | show_maint_target_async, | |
329ea579 PA |
4554 | &maintenance_set_cmdlist, |
4555 | &maintenance_show_cmdlist); | |
c6ebd6cf | 4556 | |
fbea99ea | 4557 | add_setshow_auto_boolean_cmd ("target-non-stop", no_class, |
fdf1350d | 4558 | _("\ |
fbea99ea PA |
4559 | Set whether gdb always controls the inferior in non-stop mode."), _("\ |
4560 | Show whether gdb always controls the inferior in non-stop mode."), _("\ | |
4561 | Tells gdb whether to control the inferior in non-stop mode."), | |
fdf1350d SM |
4562 | set_maint_target_non_stop, |
4563 | get_maint_target_non_stop, | |
4564 | show_maint_target_non_stop, | |
fbea99ea PA |
4565 | &maintenance_set_cmdlist, |
4566 | &maintenance_show_cmdlist); | |
4567 | ||
d914c394 SS |
4568 | add_setshow_boolean_cmd ("may-write-registers", class_support, |
4569 | &may_write_registers_1, _("\ | |
4570 | Set permission to write into registers."), _("\ | |
4571 | Show permission to write into registers."), _("\ | |
4572 | When this permission is on, GDB may write into the target's registers.\n\ | |
4573 | Otherwise, any sort of write attempt will result in an error."), | |
4574 | set_target_permissions, NULL, | |
4575 | &setlist, &showlist); | |
4576 | ||
4577 | add_setshow_boolean_cmd ("may-write-memory", class_support, | |
4578 | &may_write_memory_1, _("\ | |
4579 | Set permission to write into target memory."), _("\ | |
4580 | Show permission to write into target memory."), _("\ | |
4581 | When this permission is on, GDB may write into the target's memory.\n\ | |
4582 | Otherwise, any sort of write attempt will result in an error."), | |
4583 | set_write_memory_permission, NULL, | |
4584 | &setlist, &showlist); | |
4585 | ||
4586 | add_setshow_boolean_cmd ("may-insert-breakpoints", class_support, | |
4587 | &may_insert_breakpoints_1, _("\ | |
4588 | Set permission to insert breakpoints in the target."), _("\ | |
4589 | Show permission to insert breakpoints in the target."), _("\ | |
4590 | When this permission is on, GDB may insert breakpoints in the program.\n\ | |
4591 | Otherwise, any sort of insertion attempt will result in an error."), | |
4592 | set_target_permissions, NULL, | |
4593 | &setlist, &showlist); | |
4594 | ||
4595 | add_setshow_boolean_cmd ("may-insert-tracepoints", class_support, | |
4596 | &may_insert_tracepoints_1, _("\ | |
4597 | Set permission to insert tracepoints in the target."), _("\ | |
4598 | Show permission to insert tracepoints in the target."), _("\ | |
4599 | When this permission is on, GDB may insert tracepoints in the program.\n\ | |
4600 | Otherwise, any sort of insertion attempt will result in an error."), | |
4601 | set_target_permissions, NULL, | |
4602 | &setlist, &showlist); | |
4603 | ||
4604 | add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support, | |
4605 | &may_insert_fast_tracepoints_1, _("\ | |
4606 | Set permission to insert fast tracepoints in the target."), _("\ | |
4607 | Show permission to insert fast tracepoints in the target."), _("\ | |
4608 | When this permission is on, GDB may insert fast tracepoints.\n\ | |
4609 | Otherwise, any sort of insertion attempt will result in an error."), | |
4610 | set_target_permissions, NULL, | |
4611 | &setlist, &showlist); | |
4612 | ||
4613 | add_setshow_boolean_cmd ("may-interrupt", class_support, | |
4614 | &may_stop_1, _("\ | |
4615 | Set permission to interrupt or signal the target."), _("\ | |
4616 | Show permission to interrupt or signal the target."), _("\ | |
4617 | When this permission is on, GDB may interrupt/stop the target's execution.\n\ | |
4618 | Otherwise, any attempt to interrupt or stop will be ignored."), | |
4619 | set_target_permissions, NULL, | |
4620 | &setlist, &showlist); | |
6a3cb8e8 | 4621 | |
78cbbba8 | 4622 | add_com ("flash-erase", no_class, flash_erase_command, |
dda83cd7 | 4623 | _("Erase all flash memory regions.")); |
78cbbba8 | 4624 | |
6a3cb8e8 PA |
4625 | add_setshow_boolean_cmd ("auto-connect-native-target", class_support, |
4626 | &auto_connect_native_target, _("\ | |
4627 | Set whether GDB may automatically connect to the native target."), _("\ | |
4628 | Show whether GDB may automatically connect to the native target."), _("\ | |
4629 | When on, and GDB is not connected to a target yet, GDB\n\ | |
4630 | attempts \"run\" and other commands with the native target."), | |
4631 | NULL, show_auto_connect_native_target, | |
4632 | &setlist, &showlist); | |
c906108c | 4633 | } |