Commit | Line | Data |
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c906108c | 1 | /* Select target systems and architectures at runtime for GDB. |
7998dfc3 | 2 | |
e2882c85 | 3 | Copyright (C) 1990-2018 Free Software Foundation, Inc. |
7998dfc3 | 4 | |
c906108c SS |
5 | Contributed by Cygnus Support. |
6 | ||
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
c906108c | 23 | #include "target.h" |
68c765e2 | 24 | #include "target-dcache.h" |
c906108c SS |
25 | #include "gdbcmd.h" |
26 | #include "symtab.h" | |
27 | #include "inferior.h" | |
45741a9c | 28 | #include "infrun.h" |
c906108c SS |
29 | #include "bfd.h" |
30 | #include "symfile.h" | |
31 | #include "objfiles.h" | |
4930751a | 32 | #include "dcache.h" |
c906108c | 33 | #include <signal.h> |
4e052eda | 34 | #include "regcache.h" |
b6591e8b | 35 | #include "gdbcore.h" |
424163ea | 36 | #include "target-descriptions.h" |
e1ac3328 | 37 | #include "gdbthread.h" |
b9db4ced | 38 | #include "solib.h" |
07b82ea5 | 39 | #include "exec.h" |
edb3359d | 40 | #include "inline-frame.h" |
2f4d8875 | 41 | #include "tracepoint.h" |
7313baad | 42 | #include "gdb/fileio.h" |
8ffcbaaf | 43 | #include "agent.h" |
8de71aab | 44 | #include "auxv.h" |
a7068b60 | 45 | #include "target-debug.h" |
41fd2b0f PA |
46 | #include "top.h" |
47 | #include "event-top.h" | |
325fac50 | 48 | #include <algorithm> |
26fcd5d7 | 49 | #include "byte-vector.h" |
e671cd59 | 50 | #include "terminal.h" |
9018be22 | 51 | #include <algorithm> |
c906108c | 52 | |
f0f9ff95 TT |
53 | static void generic_tls_error (void) ATTRIBUTE_NORETURN; |
54 | ||
0a4f40a2 | 55 | static void default_terminal_info (struct target_ops *, const char *, int); |
c906108c | 56 | |
5009afc5 AS |
57 | static int default_watchpoint_addr_within_range (struct target_ops *, |
58 | CORE_ADDR, CORE_ADDR, int); | |
59 | ||
31568a15 TT |
60 | static int default_region_ok_for_hw_watchpoint (struct target_ops *, |
61 | CORE_ADDR, int); | |
e0d24f8d | 62 | |
a30bf1f1 | 63 | static void default_rcmd (struct target_ops *, const char *, struct ui_file *); |
a53f3625 | 64 | |
4229b31d TT |
65 | static ptid_t default_get_ada_task_ptid (struct target_ops *self, |
66 | long lwp, long tid); | |
67 | ||
098dba18 TT |
68 | static int default_follow_fork (struct target_ops *self, int follow_child, |
69 | int detach_fork); | |
70 | ||
8d657035 TT |
71 | static void default_mourn_inferior (struct target_ops *self); |
72 | ||
58a5184e TT |
73 | static int default_search_memory (struct target_ops *ops, |
74 | CORE_ADDR start_addr, | |
75 | ULONGEST search_space_len, | |
76 | const gdb_byte *pattern, | |
77 | ULONGEST pattern_len, | |
78 | CORE_ADDR *found_addrp); | |
79 | ||
936d2992 PA |
80 | static int default_verify_memory (struct target_ops *self, |
81 | const gdb_byte *data, | |
82 | CORE_ADDR memaddr, ULONGEST size); | |
83 | ||
8eaff7cd TT |
84 | static struct address_space *default_thread_address_space |
85 | (struct target_ops *self, ptid_t ptid); | |
86 | ||
c25c4a8b | 87 | static void tcomplain (void) ATTRIBUTE_NORETURN; |
c906108c | 88 | |
555bbdeb TT |
89 | static int return_zero (struct target_ops *); |
90 | ||
91 | static int return_zero_has_execution (struct target_ops *, ptid_t); | |
c906108c | 92 | |
a121b7c1 | 93 | static struct target_ops *find_default_run_target (const char *); |
c906108c | 94 | |
c2250ad1 UW |
95 | static struct gdbarch *default_thread_architecture (struct target_ops *ops, |
96 | ptid_t ptid); | |
97 | ||
0b5a2719 TT |
98 | static int dummy_find_memory_regions (struct target_ops *self, |
99 | find_memory_region_ftype ignore1, | |
100 | void *ignore2); | |
101 | ||
16f796b1 TT |
102 | static char *dummy_make_corefile_notes (struct target_ops *self, |
103 | bfd *ignore1, int *ignore2); | |
104 | ||
7a114964 | 105 | static const char *default_pid_to_str (struct target_ops *ops, ptid_t ptid); |
770234d3 | 106 | |
fe31bf5b TT |
107 | static enum exec_direction_kind default_execution_direction |
108 | (struct target_ops *self); | |
109 | ||
a7068b60 TT |
110 | static struct target_ops debug_target; |
111 | ||
1101cb7b TT |
112 | #include "target-delegates.c" |
113 | ||
a14ed312 | 114 | static void init_dummy_target (void); |
c906108c | 115 | |
3cecbbbe TT |
116 | static void update_current_target (void); |
117 | ||
89a1c21a SM |
118 | /* Vector of existing target structures. */ |
119 | typedef struct target_ops *target_ops_p; | |
120 | DEF_VEC_P (target_ops_p); | |
121 | static VEC (target_ops_p) *target_structs; | |
c906108c SS |
122 | |
123 | /* The initial current target, so that there is always a semi-valid | |
124 | current target. */ | |
125 | ||
126 | static struct target_ops dummy_target; | |
127 | ||
128 | /* Top of target stack. */ | |
129 | ||
258b763a | 130 | static struct target_ops *target_stack; |
c906108c SS |
131 | |
132 | /* The target structure we are currently using to talk to a process | |
133 | or file or whatever "inferior" we have. */ | |
134 | ||
135 | struct target_ops current_target; | |
136 | ||
137 | /* Command list for target. */ | |
138 | ||
139 | static struct cmd_list_element *targetlist = NULL; | |
140 | ||
cf7a04e8 DJ |
141 | /* Nonzero if we should trust readonly sections from the |
142 | executable when reading memory. */ | |
143 | ||
144 | static int trust_readonly = 0; | |
145 | ||
8defab1a DJ |
146 | /* Nonzero if we should show true memory content including |
147 | memory breakpoint inserted by gdb. */ | |
148 | ||
149 | static int show_memory_breakpoints = 0; | |
150 | ||
d914c394 SS |
151 | /* These globals control whether GDB attempts to perform these |
152 | operations; they are useful for targets that need to prevent | |
153 | inadvertant disruption, such as in non-stop mode. */ | |
154 | ||
155 | int may_write_registers = 1; | |
156 | ||
157 | int may_write_memory = 1; | |
158 | ||
159 | int may_insert_breakpoints = 1; | |
160 | ||
161 | int may_insert_tracepoints = 1; | |
162 | ||
163 | int may_insert_fast_tracepoints = 1; | |
164 | ||
165 | int may_stop = 1; | |
166 | ||
c906108c SS |
167 | /* Non-zero if we want to see trace of target level stuff. */ |
168 | ||
ccce17b0 | 169 | static unsigned int targetdebug = 0; |
3cecbbbe TT |
170 | |
171 | static void | |
eb4c3f4a | 172 | set_targetdebug (const char *args, int from_tty, struct cmd_list_element *c) |
3cecbbbe TT |
173 | { |
174 | update_current_target (); | |
175 | } | |
176 | ||
920d2a44 AC |
177 | static void |
178 | show_targetdebug (struct ui_file *file, int from_tty, | |
179 | struct cmd_list_element *c, const char *value) | |
180 | { | |
181 | fprintf_filtered (file, _("Target debugging is %s.\n"), value); | |
182 | } | |
c906108c | 183 | |
a14ed312 | 184 | static void setup_target_debug (void); |
c906108c | 185 | |
c906108c SS |
186 | /* The user just typed 'target' without the name of a target. */ |
187 | ||
c906108c | 188 | static void |
981a3fb3 | 189 | target_command (const char *arg, int from_tty) |
c906108c SS |
190 | { |
191 | fputs_filtered ("Argument required (target name). Try `help target'\n", | |
192 | gdb_stdout); | |
193 | } | |
194 | ||
c35b1492 PA |
195 | /* Default target_has_* methods for process_stratum targets. */ |
196 | ||
197 | int | |
198 | default_child_has_all_memory (struct target_ops *ops) | |
199 | { | |
200 | /* If no inferior selected, then we can't read memory here. */ | |
201 | if (ptid_equal (inferior_ptid, null_ptid)) | |
202 | return 0; | |
203 | ||
204 | return 1; | |
205 | } | |
206 | ||
207 | int | |
208 | default_child_has_memory (struct target_ops *ops) | |
209 | { | |
210 | /* If no inferior selected, then we can't read memory here. */ | |
211 | if (ptid_equal (inferior_ptid, null_ptid)) | |
212 | return 0; | |
213 | ||
214 | return 1; | |
215 | } | |
216 | ||
217 | int | |
218 | default_child_has_stack (struct target_ops *ops) | |
219 | { | |
220 | /* If no inferior selected, there's no stack. */ | |
221 | if (ptid_equal (inferior_ptid, null_ptid)) | |
222 | return 0; | |
223 | ||
224 | return 1; | |
225 | } | |
226 | ||
227 | int | |
228 | default_child_has_registers (struct target_ops *ops) | |
229 | { | |
230 | /* Can't read registers from no inferior. */ | |
231 | if (ptid_equal (inferior_ptid, null_ptid)) | |
232 | return 0; | |
233 | ||
234 | return 1; | |
235 | } | |
236 | ||
237 | int | |
aeaec162 | 238 | default_child_has_execution (struct target_ops *ops, ptid_t the_ptid) |
c35b1492 PA |
239 | { |
240 | /* If there's no thread selected, then we can't make it run through | |
241 | hoops. */ | |
aeaec162 | 242 | if (ptid_equal (the_ptid, null_ptid)) |
c35b1492 PA |
243 | return 0; |
244 | ||
245 | return 1; | |
246 | } | |
247 | ||
248 | ||
249 | int | |
250 | target_has_all_memory_1 (void) | |
251 | { | |
252 | struct target_ops *t; | |
253 | ||
254 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
255 | if (t->to_has_all_memory (t)) | |
256 | return 1; | |
257 | ||
258 | return 0; | |
259 | } | |
260 | ||
261 | int | |
262 | target_has_memory_1 (void) | |
263 | { | |
264 | struct target_ops *t; | |
265 | ||
266 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
267 | if (t->to_has_memory (t)) | |
268 | return 1; | |
269 | ||
270 | return 0; | |
271 | } | |
272 | ||
273 | int | |
274 | target_has_stack_1 (void) | |
275 | { | |
276 | struct target_ops *t; | |
277 | ||
278 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
279 | if (t->to_has_stack (t)) | |
280 | return 1; | |
281 | ||
282 | return 0; | |
283 | } | |
284 | ||
285 | int | |
286 | target_has_registers_1 (void) | |
287 | { | |
288 | struct target_ops *t; | |
289 | ||
290 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
291 | if (t->to_has_registers (t)) | |
292 | return 1; | |
293 | ||
294 | return 0; | |
295 | } | |
296 | ||
297 | int | |
aeaec162 | 298 | target_has_execution_1 (ptid_t the_ptid) |
c35b1492 PA |
299 | { |
300 | struct target_ops *t; | |
301 | ||
302 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
aeaec162 | 303 | if (t->to_has_execution (t, the_ptid)) |
c35b1492 PA |
304 | return 1; |
305 | ||
306 | return 0; | |
307 | } | |
308 | ||
aeaec162 TT |
309 | int |
310 | target_has_execution_current (void) | |
311 | { | |
312 | return target_has_execution_1 (inferior_ptid); | |
313 | } | |
314 | ||
c22a2b88 TT |
315 | /* Complete initialization of T. This ensures that various fields in |
316 | T are set, if needed by the target implementation. */ | |
c906108c SS |
317 | |
318 | void | |
c22a2b88 | 319 | complete_target_initialization (struct target_ops *t) |
c906108c | 320 | { |
0088c768 | 321 | /* Provide default values for all "must have" methods. */ |
0088c768 | 322 | |
c35b1492 | 323 | if (t->to_has_all_memory == NULL) |
555bbdeb | 324 | t->to_has_all_memory = return_zero; |
c35b1492 PA |
325 | |
326 | if (t->to_has_memory == NULL) | |
555bbdeb | 327 | t->to_has_memory = return_zero; |
c35b1492 PA |
328 | |
329 | if (t->to_has_stack == NULL) | |
555bbdeb | 330 | t->to_has_stack = return_zero; |
c35b1492 PA |
331 | |
332 | if (t->to_has_registers == NULL) | |
555bbdeb | 333 | t->to_has_registers = return_zero; |
c35b1492 PA |
334 | |
335 | if (t->to_has_execution == NULL) | |
555bbdeb | 336 | t->to_has_execution = return_zero_has_execution; |
1101cb7b | 337 | |
b3ccfe11 TT |
338 | /* These methods can be called on an unpushed target and so require |
339 | a default implementation if the target might plausibly be the | |
340 | default run target. */ | |
341 | gdb_assert (t->to_can_run == NULL || (t->to_can_async_p != NULL | |
342 | && t->to_supports_non_stop != NULL)); | |
343 | ||
1101cb7b | 344 | install_delegators (t); |
c22a2b88 TT |
345 | } |
346 | ||
8981c758 TT |
347 | /* This is used to implement the various target commands. */ |
348 | ||
349 | static void | |
eb4c3f4a | 350 | open_target (const char *args, int from_tty, struct cmd_list_element *command) |
8981c758 | 351 | { |
19ba03f4 | 352 | struct target_ops *ops = (struct target_ops *) get_cmd_context (command); |
8981c758 TT |
353 | |
354 | if (targetdebug) | |
355 | fprintf_unfiltered (gdb_stdlog, "-> %s->to_open (...)\n", | |
356 | ops->to_shortname); | |
357 | ||
358 | ops->to_open (args, from_tty); | |
359 | ||
360 | if (targetdebug) | |
361 | fprintf_unfiltered (gdb_stdlog, "<- %s->to_open (%s, %d)\n", | |
362 | ops->to_shortname, args, from_tty); | |
363 | } | |
364 | ||
c22a2b88 TT |
365 | /* Add possible target architecture T to the list and add a new |
366 | command 'target T->to_shortname'. Set COMPLETER as the command's | |
367 | completer if not NULL. */ | |
368 | ||
369 | void | |
370 | add_target_with_completer (struct target_ops *t, | |
371 | completer_ftype *completer) | |
372 | { | |
373 | struct cmd_list_element *c; | |
374 | ||
375 | complete_target_initialization (t); | |
c35b1492 | 376 | |
89a1c21a | 377 | VEC_safe_push (target_ops_p, target_structs, t); |
c906108c SS |
378 | |
379 | if (targetlist == NULL) | |
1bedd215 AC |
380 | add_prefix_cmd ("target", class_run, target_command, _("\ |
381 | Connect to a target machine or process.\n\ | |
c906108c SS |
382 | The first argument is the type or protocol of the target machine.\n\ |
383 | Remaining arguments are interpreted by the target protocol. For more\n\ | |
384 | information on the arguments for a particular protocol, type\n\ | |
1bedd215 | 385 | `help target ' followed by the protocol name."), |
c906108c | 386 | &targetlist, "target ", 0, &cmdlist); |
0450cc4c | 387 | c = add_cmd (t->to_shortname, no_class, t->to_doc, &targetlist); |
8981c758 TT |
388 | set_cmd_sfunc (c, open_target); |
389 | set_cmd_context (c, t); | |
9852c492 YQ |
390 | if (completer != NULL) |
391 | set_cmd_completer (c, completer); | |
392 | } | |
393 | ||
394 | /* Add a possible target architecture to the list. */ | |
395 | ||
396 | void | |
397 | add_target (struct target_ops *t) | |
398 | { | |
399 | add_target_with_completer (t, NULL); | |
c906108c SS |
400 | } |
401 | ||
b48d48eb MM |
402 | /* See target.h. */ |
403 | ||
404 | void | |
a121b7c1 | 405 | add_deprecated_target_alias (struct target_ops *t, const char *alias) |
b48d48eb MM |
406 | { |
407 | struct cmd_list_element *c; | |
408 | char *alt; | |
409 | ||
410 | /* If we use add_alias_cmd, here, we do not get the deprecated warning, | |
411 | see PR cli/15104. */ | |
0450cc4c | 412 | c = add_cmd (alias, no_class, t->to_doc, &targetlist); |
8981c758 TT |
413 | set_cmd_sfunc (c, open_target); |
414 | set_cmd_context (c, t); | |
b48d48eb MM |
415 | alt = xstrprintf ("target %s", t->to_shortname); |
416 | deprecate_cmd (c, alt); | |
417 | } | |
418 | ||
c906108c SS |
419 | /* Stub functions */ |
420 | ||
7d85a9c0 JB |
421 | void |
422 | target_kill (void) | |
423 | { | |
423a4807 | 424 | current_target.to_kill (¤t_target); |
7d85a9c0 JB |
425 | } |
426 | ||
11cf8741 | 427 | void |
9cbe5fff | 428 | target_load (const char *arg, int from_tty) |
11cf8741 | 429 | { |
4e5d721f | 430 | target_dcache_invalidate (); |
71a9f134 | 431 | (*current_target.to_load) (¤t_target, arg, from_tty); |
11cf8741 JM |
432 | } |
433 | ||
223ffa71 | 434 | /* Define it. */ |
5842f62a | 435 | |
e671cd59 PA |
436 | target_terminal_state target_terminal::m_terminal_state |
437 | = target_terminal_state::is_ours; | |
5842f62a | 438 | |
223ffa71 | 439 | /* See target/target.h. */ |
5842f62a PA |
440 | |
441 | void | |
223ffa71 | 442 | target_terminal::init (void) |
5842f62a PA |
443 | { |
444 | (*current_target.to_terminal_init) (¤t_target); | |
445 | ||
e671cd59 | 446 | m_terminal_state = target_terminal_state::is_ours; |
5842f62a PA |
447 | } |
448 | ||
223ffa71 | 449 | /* See target/target.h. */ |
2f99e8fc | 450 | |
d9d2d8b6 | 451 | void |
223ffa71 | 452 | target_terminal::inferior (void) |
d9d2d8b6 | 453 | { |
41fd2b0f PA |
454 | struct ui *ui = current_ui; |
455 | ||
d9d2d8b6 | 456 | /* A background resume (``run&'') should leave GDB in control of the |
3b12939d PA |
457 | terminal. */ |
458 | if (ui->prompt_state != PROMPT_BLOCKED) | |
d9d2d8b6 PA |
459 | return; |
460 | ||
215d3118 PA |
461 | /* Since we always run the inferior in the main console (unless "set |
462 | inferior-tty" is in effect), when some UI other than the main one | |
223ffa71 TT |
463 | calls target_terminal::inferior, then we leave the main UI's |
464 | terminal settings as is. */ | |
215d3118 PA |
465 | if (ui != main_ui) |
466 | return; | |
467 | ||
d9d2d8b6 PA |
468 | /* If GDB is resuming the inferior in the foreground, install |
469 | inferior's terminal modes. */ | |
e671cd59 PA |
470 | |
471 | struct inferior *inf = current_inferior (); | |
472 | ||
473 | if (inf->terminal_state != target_terminal_state::is_inferior) | |
474 | { | |
475 | (*current_target.to_terminal_inferior) (¤t_target); | |
476 | inf->terminal_state = target_terminal_state::is_inferior; | |
477 | } | |
478 | ||
479 | m_terminal_state = target_terminal_state::is_inferior; | |
480 | ||
481 | /* If the user hit C-c before, pretend that it was hit right | |
482 | here. */ | |
483 | if (check_quit_flag ()) | |
484 | target_pass_ctrlc (); | |
485 | } | |
486 | ||
487 | /* See target/target.h. */ | |
488 | ||
489 | void | |
490 | target_terminal::restore_inferior (void) | |
491 | { | |
492 | struct ui *ui = current_ui; | |
493 | ||
494 | /* See target_terminal::inferior(). */ | |
495 | if (ui->prompt_state != PROMPT_BLOCKED || ui != main_ui) | |
496 | return; | |
497 | ||
498 | /* Restore the terminal settings of inferiors that were in the | |
499 | foreground but are now ours_for_output due to a temporary | |
500 | target_target::ours_for_output() call. */ | |
501 | ||
502 | { | |
503 | scoped_restore_current_inferior restore_inferior; | |
504 | struct inferior *inf; | |
505 | ||
506 | ALL_INFERIORS (inf) | |
507 | { | |
508 | if (inf->terminal_state == target_terminal_state::is_ours_for_output) | |
509 | { | |
510 | set_current_inferior (inf); | |
511 | (*current_target.to_terminal_inferior) (¤t_target); | |
512 | inf->terminal_state = target_terminal_state::is_inferior; | |
513 | } | |
514 | } | |
515 | } | |
516 | ||
517 | m_terminal_state = target_terminal_state::is_inferior; | |
93692b58 PA |
518 | |
519 | /* If the user hit C-c before, pretend that it was hit right | |
520 | here. */ | |
521 | if (check_quit_flag ()) | |
522 | target_pass_ctrlc (); | |
5842f62a PA |
523 | } |
524 | ||
e671cd59 PA |
525 | /* Switch terminal state to DESIRED_STATE, either is_ours, or |
526 | is_ours_for_output. */ | |
527 | ||
528 | static void | |
529 | target_terminal_is_ours_kind (target_terminal_state desired_state) | |
530 | { | |
531 | scoped_restore_current_inferior restore_inferior; | |
532 | struct inferior *inf; | |
533 | ||
534 | /* Must do this in two passes. First, have all inferiors save the | |
535 | current terminal settings. Then, after all inferiors have add a | |
536 | chance to safely save the terminal settings, restore GDB's | |
537 | terminal settings. */ | |
538 | ||
539 | ALL_INFERIORS (inf) | |
540 | { | |
541 | if (inf->terminal_state == target_terminal_state::is_inferior) | |
542 | { | |
543 | set_current_inferior (inf); | |
544 | (*current_target.to_terminal_save_inferior) (¤t_target); | |
545 | } | |
546 | } | |
547 | ||
548 | ALL_INFERIORS (inf) | |
549 | { | |
550 | /* Note we don't check is_inferior here like above because we | |
551 | need to handle 'is_ours_for_output -> is_ours' too. Careful | |
552 | to never transition from 'is_ours' to 'is_ours_for_output', | |
553 | though. */ | |
554 | if (inf->terminal_state != target_terminal_state::is_ours | |
555 | && inf->terminal_state != desired_state) | |
556 | { | |
557 | set_current_inferior (inf); | |
558 | if (desired_state == target_terminal_state::is_ours) | |
559 | (*current_target.to_terminal_ours) (¤t_target); | |
560 | else if (desired_state == target_terminal_state::is_ours_for_output) | |
561 | (*current_target.to_terminal_ours_for_output) (¤t_target); | |
562 | else | |
563 | gdb_assert_not_reached ("unhandled desired state"); | |
564 | inf->terminal_state = desired_state; | |
565 | } | |
566 | } | |
567 | } | |
568 | ||
223ffa71 | 569 | /* See target/target.h. */ |
5842f62a PA |
570 | |
571 | void | |
223ffa71 | 572 | target_terminal::ours () |
5842f62a | 573 | { |
41fd2b0f PA |
574 | struct ui *ui = current_ui; |
575 | ||
223ffa71 | 576 | /* See target_terminal::inferior. */ |
215d3118 PA |
577 | if (ui != main_ui) |
578 | return; | |
579 | ||
e671cd59 | 580 | if (m_terminal_state == target_terminal_state::is_ours) |
5842f62a PA |
581 | return; |
582 | ||
e671cd59 PA |
583 | target_terminal_is_ours_kind (target_terminal_state::is_ours); |
584 | m_terminal_state = target_terminal_state::is_ours; | |
5842f62a PA |
585 | } |
586 | ||
223ffa71 | 587 | /* See target/target.h. */ |
5842f62a PA |
588 | |
589 | void | |
223ffa71 | 590 | target_terminal::ours_for_output () |
5842f62a | 591 | { |
215d3118 PA |
592 | struct ui *ui = current_ui; |
593 | ||
223ffa71 | 594 | /* See target_terminal::inferior. */ |
215d3118 PA |
595 | if (ui != main_ui) |
596 | return; | |
597 | ||
e671cd59 | 598 | if (!target_terminal::is_inferior ()) |
5842f62a | 599 | return; |
e671cd59 PA |
600 | |
601 | target_terminal_is_ours_kind (target_terminal_state::is_ours_for_output); | |
602 | target_terminal::m_terminal_state = target_terminal_state::is_ours_for_output; | |
d9d2d8b6 | 603 | } |
136d6dae | 604 | |
223ffa71 TT |
605 | /* See target/target.h. */ |
606 | ||
607 | void | |
608 | target_terminal::info (const char *arg, int from_tty) | |
609 | { | |
610 | (*current_target.to_terminal_info) (¤t_target, arg, from_tty); | |
611 | } | |
612 | ||
b0ed115f TT |
613 | /* See target.h. */ |
614 | ||
615 | int | |
616 | target_supports_terminal_ours (void) | |
617 | { | |
618 | struct target_ops *t; | |
619 | ||
620 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
621 | { | |
622 | if (t->to_terminal_ours != delegate_terminal_ours | |
623 | && t->to_terminal_ours != tdefault_terminal_ours) | |
624 | return 1; | |
625 | } | |
626 | ||
627 | return 0; | |
628 | } | |
629 | ||
c906108c | 630 | static void |
fba45db2 | 631 | tcomplain (void) |
c906108c | 632 | { |
8a3fe4f8 | 633 | error (_("You can't do that when your target is `%s'"), |
c906108c SS |
634 | current_target.to_shortname); |
635 | } | |
636 | ||
637 | void | |
fba45db2 | 638 | noprocess (void) |
c906108c | 639 | { |
8a3fe4f8 | 640 | error (_("You can't do that without a process to debug.")); |
c906108c SS |
641 | } |
642 | ||
c906108c | 643 | static void |
0a4f40a2 | 644 | default_terminal_info (struct target_ops *self, const char *args, int from_tty) |
c906108c | 645 | { |
a3f17187 | 646 | printf_unfiltered (_("No saved terminal information.\n")); |
c906108c SS |
647 | } |
648 | ||
0ef643c8 JB |
649 | /* A default implementation for the to_get_ada_task_ptid target method. |
650 | ||
651 | This function builds the PTID by using both LWP and TID as part of | |
652 | the PTID lwp and tid elements. The pid used is the pid of the | |
653 | inferior_ptid. */ | |
654 | ||
2c0b251b | 655 | static ptid_t |
1e6b91a4 | 656 | default_get_ada_task_ptid (struct target_ops *self, long lwp, long tid) |
0ef643c8 JB |
657 | { |
658 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid); | |
659 | } | |
660 | ||
32231432 | 661 | static enum exec_direction_kind |
4c612759 | 662 | default_execution_direction (struct target_ops *self) |
32231432 PA |
663 | { |
664 | if (!target_can_execute_reverse) | |
665 | return EXEC_FORWARD; | |
666 | else if (!target_can_async_p ()) | |
667 | return EXEC_FORWARD; | |
668 | else | |
669 | gdb_assert_not_reached ("\ | |
670 | to_execution_direction must be implemented for reverse async"); | |
671 | } | |
672 | ||
7998dfc3 AC |
673 | /* Go through the target stack from top to bottom, copying over zero |
674 | entries in current_target, then filling in still empty entries. In | |
675 | effect, we are doing class inheritance through the pushed target | |
676 | vectors. | |
677 | ||
678 | NOTE: cagney/2003-10-17: The problem with this inheritance, as it | |
679 | is currently implemented, is that it discards any knowledge of | |
680 | which target an inherited method originally belonged to. | |
681 | Consequently, new new target methods should instead explicitly and | |
682 | locally search the target stack for the target that can handle the | |
683 | request. */ | |
c906108c SS |
684 | |
685 | static void | |
7998dfc3 | 686 | update_current_target (void) |
c906108c | 687 | { |
7998dfc3 AC |
688 | struct target_ops *t; |
689 | ||
08d8bcd7 | 690 | /* First, reset current's contents. */ |
7998dfc3 AC |
691 | memset (¤t_target, 0, sizeof (current_target)); |
692 | ||
1101cb7b TT |
693 | /* Install the delegators. */ |
694 | install_delegators (¤t_target); | |
695 | ||
be4ddd36 TT |
696 | current_target.to_stratum = target_stack->to_stratum; |
697 | ||
7998dfc3 AC |
698 | #define INHERIT(FIELD, TARGET) \ |
699 | if (!current_target.FIELD) \ | |
700 | current_target.FIELD = (TARGET)->FIELD | |
701 | ||
be4ddd36 TT |
702 | /* Do not add any new INHERITs here. Instead, use the delegation |
703 | mechanism provided by make-target-delegates. */ | |
7998dfc3 AC |
704 | for (t = target_stack; t; t = t->beneath) |
705 | { | |
706 | INHERIT (to_shortname, t); | |
707 | INHERIT (to_longname, t); | |
dc177b7a | 708 | INHERIT (to_attach_no_wait, t); |
74174d2e | 709 | INHERIT (to_have_steppable_watchpoint, t); |
7998dfc3 | 710 | INHERIT (to_have_continuable_watchpoint, t); |
7998dfc3 | 711 | INHERIT (to_has_thread_control, t); |
7998dfc3 AC |
712 | } |
713 | #undef INHERIT | |
714 | ||
7998dfc3 AC |
715 | /* Finally, position the target-stack beneath the squashed |
716 | "current_target". That way code looking for a non-inherited | |
717 | target method can quickly and simply find it. */ | |
718 | current_target.beneath = target_stack; | |
b4b61fdb DJ |
719 | |
720 | if (targetdebug) | |
721 | setup_target_debug (); | |
c906108c SS |
722 | } |
723 | ||
724 | /* Push a new target type into the stack of the existing target accessors, | |
725 | possibly superseding some of the existing accessors. | |
726 | ||
c906108c SS |
727 | Rather than allow an empty stack, we always have the dummy target at |
728 | the bottom stratum, so we can call the function vectors without | |
729 | checking them. */ | |
730 | ||
b26a4dcb | 731 | void |
fba45db2 | 732 | push_target (struct target_ops *t) |
c906108c | 733 | { |
258b763a | 734 | struct target_ops **cur; |
c906108c SS |
735 | |
736 | /* Check magic number. If wrong, it probably means someone changed | |
737 | the struct definition, but not all the places that initialize one. */ | |
738 | if (t->to_magic != OPS_MAGIC) | |
739 | { | |
c5aa993b JM |
740 | fprintf_unfiltered (gdb_stderr, |
741 | "Magic number of %s target struct wrong\n", | |
742 | t->to_shortname); | |
3e43a32a MS |
743 | internal_error (__FILE__, __LINE__, |
744 | _("failed internal consistency check")); | |
c906108c SS |
745 | } |
746 | ||
258b763a AC |
747 | /* Find the proper stratum to install this target in. */ |
748 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
c906108c | 749 | { |
258b763a | 750 | if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum) |
c906108c SS |
751 | break; |
752 | } | |
753 | ||
258b763a | 754 | /* If there's already targets at this stratum, remove them. */ |
88c231eb | 755 | /* FIXME: cagney/2003-10-15: I think this should be popping all |
258b763a AC |
756 | targets to CUR, and not just those at this stratum level. */ |
757 | while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum) | |
758 | { | |
759 | /* There's already something at this stratum level. Close it, | |
760 | and un-hook it from the stack. */ | |
761 | struct target_ops *tmp = (*cur); | |
5d502164 | 762 | |
258b763a AC |
763 | (*cur) = (*cur)->beneath; |
764 | tmp->beneath = NULL; | |
460014f5 | 765 | target_close (tmp); |
258b763a | 766 | } |
c906108c SS |
767 | |
768 | /* We have removed all targets in our stratum, now add the new one. */ | |
258b763a AC |
769 | t->beneath = (*cur); |
770 | (*cur) = t; | |
c906108c SS |
771 | |
772 | update_current_target (); | |
c906108c SS |
773 | } |
774 | ||
2bc416ba | 775 | /* Remove a target_ops vector from the stack, wherever it may be. |
c906108c SS |
776 | Return how many times it was removed (0 or 1). */ |
777 | ||
778 | int | |
fba45db2 | 779 | unpush_target (struct target_ops *t) |
c906108c | 780 | { |
258b763a AC |
781 | struct target_ops **cur; |
782 | struct target_ops *tmp; | |
c906108c | 783 | |
c8d104ad PA |
784 | if (t->to_stratum == dummy_stratum) |
785 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 786 | _("Attempt to unpush the dummy target")); |
c8d104ad | 787 | |
c906108c | 788 | /* Look for the specified target. Note that we assume that a target |
c378eb4e | 789 | can only occur once in the target stack. */ |
c906108c | 790 | |
258b763a AC |
791 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) |
792 | { | |
793 | if ((*cur) == t) | |
794 | break; | |
795 | } | |
c906108c | 796 | |
305436e0 PA |
797 | /* If we don't find target_ops, quit. Only open targets should be |
798 | closed. */ | |
258b763a | 799 | if ((*cur) == NULL) |
305436e0 | 800 | return 0; |
5269965e | 801 | |
c378eb4e | 802 | /* Unchain the target. */ |
258b763a AC |
803 | tmp = (*cur); |
804 | (*cur) = (*cur)->beneath; | |
805 | tmp->beneath = NULL; | |
c906108c SS |
806 | |
807 | update_current_target (); | |
c906108c | 808 | |
305436e0 PA |
809 | /* Finally close the target. Note we do this after unchaining, so |
810 | any target method calls from within the target_close | |
811 | implementation don't end up in T anymore. */ | |
460014f5 | 812 | target_close (t); |
305436e0 | 813 | |
c906108c SS |
814 | return 1; |
815 | } | |
816 | ||
915ef8b1 PA |
817 | /* Unpush TARGET and assert that it worked. */ |
818 | ||
819 | static void | |
820 | unpush_target_and_assert (struct target_ops *target) | |
821 | { | |
822 | if (!unpush_target (target)) | |
823 | { | |
824 | fprintf_unfiltered (gdb_stderr, | |
825 | "pop_all_targets couldn't find target %s\n", | |
826 | target->to_shortname); | |
827 | internal_error (__FILE__, __LINE__, | |
828 | _("failed internal consistency check")); | |
829 | } | |
830 | } | |
831 | ||
aa76d38d | 832 | void |
460014f5 | 833 | pop_all_targets_above (enum strata above_stratum) |
aa76d38d | 834 | { |
87ab71f0 | 835 | while ((int) (current_target.to_stratum) > (int) above_stratum) |
915ef8b1 PA |
836 | unpush_target_and_assert (target_stack); |
837 | } | |
838 | ||
839 | /* See target.h. */ | |
840 | ||
841 | void | |
842 | pop_all_targets_at_and_above (enum strata stratum) | |
843 | { | |
844 | while ((int) (current_target.to_stratum) >= (int) stratum) | |
845 | unpush_target_and_assert (target_stack); | |
aa76d38d PA |
846 | } |
847 | ||
87ab71f0 | 848 | void |
460014f5 | 849 | pop_all_targets (void) |
87ab71f0 | 850 | { |
460014f5 | 851 | pop_all_targets_above (dummy_stratum); |
87ab71f0 PA |
852 | } |
853 | ||
c0edd9ed JK |
854 | /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */ |
855 | ||
856 | int | |
857 | target_is_pushed (struct target_ops *t) | |
858 | { | |
84202f9c | 859 | struct target_ops *cur; |
c0edd9ed JK |
860 | |
861 | /* Check magic number. If wrong, it probably means someone changed | |
862 | the struct definition, but not all the places that initialize one. */ | |
863 | if (t->to_magic != OPS_MAGIC) | |
864 | { | |
865 | fprintf_unfiltered (gdb_stderr, | |
866 | "Magic number of %s target struct wrong\n", | |
867 | t->to_shortname); | |
3e43a32a MS |
868 | internal_error (__FILE__, __LINE__, |
869 | _("failed internal consistency check")); | |
c0edd9ed JK |
870 | } |
871 | ||
84202f9c TT |
872 | for (cur = target_stack; cur != NULL; cur = cur->beneath) |
873 | if (cur == t) | |
c0edd9ed JK |
874 | return 1; |
875 | ||
876 | return 0; | |
877 | } | |
878 | ||
f0f9ff95 TT |
879 | /* Default implementation of to_get_thread_local_address. */ |
880 | ||
881 | static void | |
882 | generic_tls_error (void) | |
883 | { | |
884 | throw_error (TLS_GENERIC_ERROR, | |
885 | _("Cannot find thread-local variables on this target")); | |
886 | } | |
887 | ||
72f5cf0e | 888 | /* Using the objfile specified in OBJFILE, find the address for the |
9e35dae4 DJ |
889 | current thread's thread-local storage with offset OFFSET. */ |
890 | CORE_ADDR | |
891 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) | |
892 | { | |
893 | volatile CORE_ADDR addr = 0; | |
f0f9ff95 | 894 | struct target_ops *target = ¤t_target; |
9e35dae4 | 895 | |
f0f9ff95 | 896 | if (gdbarch_fetch_tls_load_module_address_p (target_gdbarch ())) |
9e35dae4 DJ |
897 | { |
898 | ptid_t ptid = inferior_ptid; | |
9e35dae4 | 899 | |
492d29ea | 900 | TRY |
9e35dae4 DJ |
901 | { |
902 | CORE_ADDR lm_addr; | |
903 | ||
904 | /* Fetch the load module address for this objfile. */ | |
f5656ead | 905 | lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch (), |
9e35dae4 | 906 | objfile); |
9e35dae4 | 907 | |
3e43a32a MS |
908 | addr = target->to_get_thread_local_address (target, ptid, |
909 | lm_addr, offset); | |
9e35dae4 DJ |
910 | } |
911 | /* If an error occurred, print TLS related messages here. Otherwise, | |
912 | throw the error to some higher catcher. */ | |
492d29ea | 913 | CATCH (ex, RETURN_MASK_ALL) |
9e35dae4 DJ |
914 | { |
915 | int objfile_is_library = (objfile->flags & OBJF_SHARED); | |
916 | ||
917 | switch (ex.error) | |
918 | { | |
919 | case TLS_NO_LIBRARY_SUPPORT_ERROR: | |
3e43a32a MS |
920 | error (_("Cannot find thread-local variables " |
921 | "in this thread library.")); | |
9e35dae4 DJ |
922 | break; |
923 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: | |
924 | if (objfile_is_library) | |
925 | error (_("Cannot find shared library `%s' in dynamic" | |
4262abfb | 926 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
927 | else |
928 | error (_("Cannot find executable file `%s' in dynamic" | |
4262abfb | 929 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
930 | break; |
931 | case TLS_NOT_ALLOCATED_YET_ERROR: | |
932 | if (objfile_is_library) | |
933 | error (_("The inferior has not yet allocated storage for" | |
934 | " thread-local variables in\n" | |
935 | "the shared library `%s'\n" | |
936 | "for %s"), | |
4262abfb | 937 | objfile_name (objfile), target_pid_to_str (ptid)); |
9e35dae4 DJ |
938 | else |
939 | error (_("The inferior has not yet allocated storage for" | |
940 | " thread-local variables in\n" | |
941 | "the executable `%s'\n" | |
942 | "for %s"), | |
4262abfb | 943 | objfile_name (objfile), target_pid_to_str (ptid)); |
9e35dae4 DJ |
944 | break; |
945 | case TLS_GENERIC_ERROR: | |
946 | if (objfile_is_library) | |
947 | error (_("Cannot find thread-local storage for %s, " | |
948 | "shared library %s:\n%s"), | |
949 | target_pid_to_str (ptid), | |
4262abfb | 950 | objfile_name (objfile), ex.message); |
9e35dae4 DJ |
951 | else |
952 | error (_("Cannot find thread-local storage for %s, " | |
953 | "executable file %s:\n%s"), | |
954 | target_pid_to_str (ptid), | |
4262abfb | 955 | objfile_name (objfile), ex.message); |
9e35dae4 DJ |
956 | break; |
957 | default: | |
958 | throw_exception (ex); | |
959 | break; | |
960 | } | |
961 | } | |
492d29ea | 962 | END_CATCH |
9e35dae4 DJ |
963 | } |
964 | /* It wouldn't be wrong here to try a gdbarch method, too; finding | |
965 | TLS is an ABI-specific thing. But we don't do that yet. */ | |
966 | else | |
967 | error (_("Cannot find thread-local variables on this target")); | |
968 | ||
969 | return addr; | |
970 | } | |
971 | ||
6be7b56e | 972 | const char * |
01cb8804 | 973 | target_xfer_status_to_string (enum target_xfer_status status) |
6be7b56e PA |
974 | { |
975 | #define CASE(X) case X: return #X | |
01cb8804 | 976 | switch (status) |
6be7b56e PA |
977 | { |
978 | CASE(TARGET_XFER_E_IO); | |
bc113b4e | 979 | CASE(TARGET_XFER_UNAVAILABLE); |
6be7b56e PA |
980 | default: |
981 | return "<unknown>"; | |
982 | } | |
983 | #undef CASE | |
984 | }; | |
985 | ||
986 | ||
c906108c SS |
987 | #undef MIN |
988 | #define MIN(A, B) (((A) <= (B)) ? (A) : (B)) | |
989 | ||
990 | /* target_read_string -- read a null terminated string, up to LEN bytes, | |
991 | from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful. | |
992 | Set *STRING to a pointer to malloc'd memory containing the data; the caller | |
993 | is responsible for freeing it. Return the number of bytes successfully | |
994 | read. */ | |
995 | ||
996 | int | |
e83e4e24 TT |
997 | target_read_string (CORE_ADDR memaddr, gdb::unique_xmalloc_ptr<char> *string, |
998 | int len, int *errnop) | |
c906108c | 999 | { |
c2e8b827 | 1000 | int tlen, offset, i; |
1b0ba102 | 1001 | gdb_byte buf[4]; |
c906108c SS |
1002 | int errcode = 0; |
1003 | char *buffer; | |
1004 | int buffer_allocated; | |
1005 | char *bufptr; | |
1006 | unsigned int nbytes_read = 0; | |
1007 | ||
6217bf3e MS |
1008 | gdb_assert (string); |
1009 | ||
c906108c SS |
1010 | /* Small for testing. */ |
1011 | buffer_allocated = 4; | |
224c3ddb | 1012 | buffer = (char *) xmalloc (buffer_allocated); |
c906108c SS |
1013 | bufptr = buffer; |
1014 | ||
c906108c SS |
1015 | while (len > 0) |
1016 | { | |
1017 | tlen = MIN (len, 4 - (memaddr & 3)); | |
1018 | offset = memaddr & 3; | |
1019 | ||
1b0ba102 | 1020 | errcode = target_read_memory (memaddr & ~3, buf, sizeof buf); |
c906108c SS |
1021 | if (errcode != 0) |
1022 | { | |
1023 | /* The transfer request might have crossed the boundary to an | |
c378eb4e | 1024 | unallocated region of memory. Retry the transfer, requesting |
c906108c SS |
1025 | a single byte. */ |
1026 | tlen = 1; | |
1027 | offset = 0; | |
b8eb5af0 | 1028 | errcode = target_read_memory (memaddr, buf, 1); |
c906108c SS |
1029 | if (errcode != 0) |
1030 | goto done; | |
1031 | } | |
1032 | ||
1033 | if (bufptr - buffer + tlen > buffer_allocated) | |
1034 | { | |
1035 | unsigned int bytes; | |
5d502164 | 1036 | |
c906108c SS |
1037 | bytes = bufptr - buffer; |
1038 | buffer_allocated *= 2; | |
224c3ddb | 1039 | buffer = (char *) xrealloc (buffer, buffer_allocated); |
c906108c SS |
1040 | bufptr = buffer + bytes; |
1041 | } | |
1042 | ||
1043 | for (i = 0; i < tlen; i++) | |
1044 | { | |
1045 | *bufptr++ = buf[i + offset]; | |
1046 | if (buf[i + offset] == '\000') | |
1047 | { | |
1048 | nbytes_read += i + 1; | |
1049 | goto done; | |
1050 | } | |
1051 | } | |
1052 | ||
1053 | memaddr += tlen; | |
1054 | len -= tlen; | |
1055 | nbytes_read += tlen; | |
1056 | } | |
c5aa993b | 1057 | done: |
e83e4e24 | 1058 | string->reset (buffer); |
c906108c SS |
1059 | if (errnop != NULL) |
1060 | *errnop = errcode; | |
c906108c SS |
1061 | return nbytes_read; |
1062 | } | |
1063 | ||
07b82ea5 PA |
1064 | struct target_section_table * |
1065 | target_get_section_table (struct target_ops *target) | |
1066 | { | |
7e35c012 | 1067 | return (*target->to_get_section_table) (target); |
07b82ea5 PA |
1068 | } |
1069 | ||
8db32d44 | 1070 | /* Find a section containing ADDR. */ |
07b82ea5 | 1071 | |
0542c86d | 1072 | struct target_section * |
8db32d44 AC |
1073 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
1074 | { | |
07b82ea5 | 1075 | struct target_section_table *table = target_get_section_table (target); |
0542c86d | 1076 | struct target_section *secp; |
07b82ea5 PA |
1077 | |
1078 | if (table == NULL) | |
1079 | return NULL; | |
1080 | ||
1081 | for (secp = table->sections; secp < table->sections_end; secp++) | |
8db32d44 AC |
1082 | { |
1083 | if (addr >= secp->addr && addr < secp->endaddr) | |
1084 | return secp; | |
1085 | } | |
1086 | return NULL; | |
1087 | } | |
1088 | ||
0fec99e8 PA |
1089 | |
1090 | /* Helper for the memory xfer routines. Checks the attributes of the | |
1091 | memory region of MEMADDR against the read or write being attempted. | |
1092 | If the access is permitted returns true, otherwise returns false. | |
1093 | REGION_P is an optional output parameter. If not-NULL, it is | |
1094 | filled with a pointer to the memory region of MEMADDR. REG_LEN | |
1095 | returns LEN trimmed to the end of the region. This is how much the | |
1096 | caller can continue requesting, if the access is permitted. A | |
1097 | single xfer request must not straddle memory region boundaries. */ | |
1098 | ||
1099 | static int | |
1100 | memory_xfer_check_region (gdb_byte *readbuf, const gdb_byte *writebuf, | |
1101 | ULONGEST memaddr, ULONGEST len, ULONGEST *reg_len, | |
1102 | struct mem_region **region_p) | |
1103 | { | |
1104 | struct mem_region *region; | |
1105 | ||
1106 | region = lookup_mem_region (memaddr); | |
1107 | ||
1108 | if (region_p != NULL) | |
1109 | *region_p = region; | |
1110 | ||
1111 | switch (region->attrib.mode) | |
1112 | { | |
1113 | case MEM_RO: | |
1114 | if (writebuf != NULL) | |
1115 | return 0; | |
1116 | break; | |
1117 | ||
1118 | case MEM_WO: | |
1119 | if (readbuf != NULL) | |
1120 | return 0; | |
1121 | break; | |
1122 | ||
1123 | case MEM_FLASH: | |
1124 | /* We only support writing to flash during "load" for now. */ | |
1125 | if (writebuf != NULL) | |
1126 | error (_("Writing to flash memory forbidden in this context")); | |
1127 | break; | |
1128 | ||
1129 | case MEM_NONE: | |
1130 | return 0; | |
1131 | } | |
1132 | ||
1133 | /* region->hi == 0 means there's no upper bound. */ | |
1134 | if (memaddr + len < region->hi || region->hi == 0) | |
1135 | *reg_len = len; | |
1136 | else | |
1137 | *reg_len = region->hi - memaddr; | |
1138 | ||
1139 | return 1; | |
1140 | } | |
1141 | ||
9f713294 YQ |
1142 | /* Read memory from more than one valid target. A core file, for |
1143 | instance, could have some of memory but delegate other bits to | |
1144 | the target below it. So, we must manually try all targets. */ | |
1145 | ||
cc9f16aa | 1146 | enum target_xfer_status |
17fde6d0 | 1147 | raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf, |
9b409511 YQ |
1148 | const gdb_byte *writebuf, ULONGEST memaddr, LONGEST len, |
1149 | ULONGEST *xfered_len) | |
9f713294 | 1150 | { |
9b409511 | 1151 | enum target_xfer_status res; |
9f713294 YQ |
1152 | |
1153 | do | |
1154 | { | |
1155 | res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 YQ |
1156 | readbuf, writebuf, memaddr, len, |
1157 | xfered_len); | |
1158 | if (res == TARGET_XFER_OK) | |
9f713294 YQ |
1159 | break; |
1160 | ||
633785ff | 1161 | /* Stop if the target reports that the memory is not available. */ |
bc113b4e | 1162 | if (res == TARGET_XFER_UNAVAILABLE) |
633785ff MM |
1163 | break; |
1164 | ||
9f713294 YQ |
1165 | /* We want to continue past core files to executables, but not |
1166 | past a running target's memory. */ | |
1167 | if (ops->to_has_all_memory (ops)) | |
1168 | break; | |
1169 | ||
1170 | ops = ops->beneath; | |
1171 | } | |
1172 | while (ops != NULL); | |
1173 | ||
0f26cec1 PA |
1174 | /* The cache works at the raw memory level. Make sure the cache |
1175 | gets updated with raw contents no matter what kind of memory | |
1176 | object was originally being written. Note we do write-through | |
1177 | first, so that if it fails, we don't write to the cache contents | |
1178 | that never made it to the target. */ | |
1179 | if (writebuf != NULL | |
1180 | && !ptid_equal (inferior_ptid, null_ptid) | |
1181 | && target_dcache_init_p () | |
1182 | && (stack_cache_enabled_p () || code_cache_enabled_p ())) | |
1183 | { | |
1184 | DCACHE *dcache = target_dcache_get (); | |
1185 | ||
1186 | /* Note that writing to an area of memory which wasn't present | |
1187 | in the cache doesn't cause it to be loaded in. */ | |
1188 | dcache_update (dcache, res, memaddr, writebuf, *xfered_len); | |
1189 | } | |
1190 | ||
9f713294 YQ |
1191 | return res; |
1192 | } | |
1193 | ||
7f79c47e DE |
1194 | /* Perform a partial memory transfer. |
1195 | For docs see target.h, to_xfer_partial. */ | |
cf7a04e8 | 1196 | |
9b409511 | 1197 | static enum target_xfer_status |
f0ba3972 | 1198 | memory_xfer_partial_1 (struct target_ops *ops, enum target_object object, |
17fde6d0 | 1199 | gdb_byte *readbuf, const gdb_byte *writebuf, ULONGEST memaddr, |
9b409511 | 1200 | ULONGEST len, ULONGEST *xfered_len) |
0779438d | 1201 | { |
9b409511 | 1202 | enum target_xfer_status res; |
0fec99e8 | 1203 | ULONGEST reg_len; |
cf7a04e8 | 1204 | struct mem_region *region; |
4e5d721f | 1205 | struct inferior *inf; |
cf7a04e8 | 1206 | |
07b82ea5 PA |
1207 | /* For accesses to unmapped overlay sections, read directly from |
1208 | files. Must do this first, as MEMADDR may need adjustment. */ | |
1209 | if (readbuf != NULL && overlay_debugging) | |
1210 | { | |
1211 | struct obj_section *section = find_pc_overlay (memaddr); | |
5d502164 | 1212 | |
07b82ea5 PA |
1213 | if (pc_in_unmapped_range (memaddr, section)) |
1214 | { | |
1215 | struct target_section_table *table | |
1216 | = target_get_section_table (ops); | |
1217 | const char *section_name = section->the_bfd_section->name; | |
5d502164 | 1218 | |
07b82ea5 PA |
1219 | memaddr = overlay_mapped_address (memaddr, section); |
1220 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 1221 | memaddr, len, xfered_len, |
07b82ea5 PA |
1222 | table->sections, |
1223 | table->sections_end, | |
1224 | section_name); | |
1225 | } | |
1226 | } | |
1227 | ||
1228 | /* Try the executable files, if "trust-readonly-sections" is set. */ | |
cf7a04e8 DJ |
1229 | if (readbuf != NULL && trust_readonly) |
1230 | { | |
0542c86d | 1231 | struct target_section *secp; |
07b82ea5 | 1232 | struct target_section_table *table; |
cf7a04e8 DJ |
1233 | |
1234 | secp = target_section_by_addr (ops, memaddr); | |
1235 | if (secp != NULL | |
2b2848e2 DE |
1236 | && (bfd_get_section_flags (secp->the_bfd_section->owner, |
1237 | secp->the_bfd_section) | |
cf7a04e8 | 1238 | & SEC_READONLY)) |
07b82ea5 PA |
1239 | { |
1240 | table = target_get_section_table (ops); | |
1241 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 1242 | memaddr, len, xfered_len, |
07b82ea5 PA |
1243 | table->sections, |
1244 | table->sections_end, | |
1245 | NULL); | |
1246 | } | |
98646950 UW |
1247 | } |
1248 | ||
cf7a04e8 | 1249 | /* Try GDB's internal data cache. */ |
cf7a04e8 | 1250 | |
0fec99e8 PA |
1251 | if (!memory_xfer_check_region (readbuf, writebuf, memaddr, len, ®_len, |
1252 | ®ion)) | |
1253 | return TARGET_XFER_E_IO; | |
cf7a04e8 | 1254 | |
6c95b8df | 1255 | if (!ptid_equal (inferior_ptid, null_ptid)) |
c9657e70 | 1256 | inf = find_inferior_ptid (inferior_ptid); |
6c95b8df PA |
1257 | else |
1258 | inf = NULL; | |
4e5d721f DE |
1259 | |
1260 | if (inf != NULL | |
0f26cec1 | 1261 | && readbuf != NULL |
2f4d8875 PA |
1262 | /* The dcache reads whole cache lines; that doesn't play well |
1263 | with reading from a trace buffer, because reading outside of | |
1264 | the collected memory range fails. */ | |
1265 | && get_traceframe_number () == -1 | |
4e5d721f | 1266 | && (region->attrib.cache |
29453a14 YQ |
1267 | || (stack_cache_enabled_p () && object == TARGET_OBJECT_STACK_MEMORY) |
1268 | || (code_cache_enabled_p () && object == TARGET_OBJECT_CODE_MEMORY))) | |
cf7a04e8 | 1269 | { |
2a2f9fe4 YQ |
1270 | DCACHE *dcache = target_dcache_get_or_init (); |
1271 | ||
0f26cec1 PA |
1272 | return dcache_read_memory_partial (ops, dcache, memaddr, readbuf, |
1273 | reg_len, xfered_len); | |
cf7a04e8 DJ |
1274 | } |
1275 | ||
1276 | /* If none of those methods found the memory we wanted, fall back | |
1277 | to a target partial transfer. Normally a single call to | |
1278 | to_xfer_partial is enough; if it doesn't recognize an object | |
1279 | it will call the to_xfer_partial of the next target down. | |
1280 | But for memory this won't do. Memory is the only target | |
9b409511 YQ |
1281 | object which can be read from more than one valid target. |
1282 | A core file, for instance, could have some of memory but | |
1283 | delegate other bits to the target below it. So, we must | |
1284 | manually try all targets. */ | |
1285 | ||
1286 | res = raw_memory_xfer_partial (ops, readbuf, writebuf, memaddr, reg_len, | |
1287 | xfered_len); | |
cf7a04e8 DJ |
1288 | |
1289 | /* If we still haven't got anything, return the last error. We | |
1290 | give up. */ | |
1291 | return res; | |
0779438d AC |
1292 | } |
1293 | ||
f0ba3972 PA |
1294 | /* Perform a partial memory transfer. For docs see target.h, |
1295 | to_xfer_partial. */ | |
1296 | ||
9b409511 | 1297 | static enum target_xfer_status |
f0ba3972 | 1298 | memory_xfer_partial (struct target_ops *ops, enum target_object object, |
9b409511 YQ |
1299 | gdb_byte *readbuf, const gdb_byte *writebuf, |
1300 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) | |
f0ba3972 | 1301 | { |
9b409511 | 1302 | enum target_xfer_status res; |
f0ba3972 PA |
1303 | |
1304 | /* Zero length requests are ok and require no work. */ | |
1305 | if (len == 0) | |
9b409511 | 1306 | return TARGET_XFER_EOF; |
f0ba3972 | 1307 | |
a738ea1d YQ |
1308 | memaddr = address_significant (target_gdbarch (), memaddr); |
1309 | ||
f0ba3972 PA |
1310 | /* Fill in READBUF with breakpoint shadows, or WRITEBUF with |
1311 | breakpoint insns, thus hiding out from higher layers whether | |
1312 | there are software breakpoints inserted in the code stream. */ | |
1313 | if (readbuf != NULL) | |
1314 | { | |
9b409511 YQ |
1315 | res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len, |
1316 | xfered_len); | |
f0ba3972 | 1317 | |
9b409511 | 1318 | if (res == TARGET_XFER_OK && !show_memory_breakpoints) |
c63528fc | 1319 | breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, *xfered_len); |
f0ba3972 PA |
1320 | } |
1321 | else | |
1322 | { | |
67c059c2 AB |
1323 | /* A large write request is likely to be partially satisfied |
1324 | by memory_xfer_partial_1. We will continually malloc | |
1325 | and free a copy of the entire write request for breakpoint | |
1326 | shadow handling even though we only end up writing a small | |
09c98b44 DB |
1327 | subset of it. Cap writes to a limit specified by the target |
1328 | to mitigate this. */ | |
325fac50 | 1329 | len = std::min (ops->to_get_memory_xfer_limit (ops), len); |
67c059c2 | 1330 | |
26fcd5d7 TT |
1331 | gdb::byte_vector buf (writebuf, writebuf + len); |
1332 | breakpoint_xfer_memory (NULL, buf.data (), writebuf, memaddr, len); | |
1333 | res = memory_xfer_partial_1 (ops, object, NULL, buf.data (), memaddr, len, | |
9b409511 | 1334 | xfered_len); |
f0ba3972 PA |
1335 | } |
1336 | ||
1337 | return res; | |
1338 | } | |
1339 | ||
cb85b21b TT |
1340 | scoped_restore_tmpl<int> |
1341 | make_scoped_restore_show_memory_breakpoints (int show) | |
8defab1a | 1342 | { |
cb85b21b | 1343 | return make_scoped_restore (&show_memory_breakpoints, show); |
8defab1a DJ |
1344 | } |
1345 | ||
7f79c47e DE |
1346 | /* For docs see target.h, to_xfer_partial. */ |
1347 | ||
9b409511 | 1348 | enum target_xfer_status |
27394598 AC |
1349 | target_xfer_partial (struct target_ops *ops, |
1350 | enum target_object object, const char *annex, | |
4ac248ca | 1351 | gdb_byte *readbuf, const gdb_byte *writebuf, |
9b409511 YQ |
1352 | ULONGEST offset, ULONGEST len, |
1353 | ULONGEST *xfered_len) | |
27394598 | 1354 | { |
9b409511 | 1355 | enum target_xfer_status retval; |
27394598 AC |
1356 | |
1357 | gdb_assert (ops->to_xfer_partial != NULL); | |
cf7a04e8 | 1358 | |
ce6d0892 YQ |
1359 | /* Transfer is done when LEN is zero. */ |
1360 | if (len == 0) | |
9b409511 | 1361 | return TARGET_XFER_EOF; |
ce6d0892 | 1362 | |
d914c394 SS |
1363 | if (writebuf && !may_write_memory) |
1364 | error (_("Writing to memory is not allowed (addr %s, len %s)"), | |
1365 | core_addr_to_string_nz (offset), plongest (len)); | |
1366 | ||
9b409511 YQ |
1367 | *xfered_len = 0; |
1368 | ||
cf7a04e8 DJ |
1369 | /* If this is a memory transfer, let the memory-specific code |
1370 | have a look at it instead. Memory transfers are more | |
1371 | complicated. */ | |
29453a14 YQ |
1372 | if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY |
1373 | || object == TARGET_OBJECT_CODE_MEMORY) | |
4e5d721f | 1374 | retval = memory_xfer_partial (ops, object, readbuf, |
9b409511 | 1375 | writebuf, offset, len, xfered_len); |
9f713294 | 1376 | else if (object == TARGET_OBJECT_RAW_MEMORY) |
cf7a04e8 | 1377 | { |
0fec99e8 PA |
1378 | /* Skip/avoid accessing the target if the memory region |
1379 | attributes block the access. Check this here instead of in | |
1380 | raw_memory_xfer_partial as otherwise we'd end up checking | |
1381 | this twice in the case of the memory_xfer_partial path is | |
1382 | taken; once before checking the dcache, and another in the | |
1383 | tail call to raw_memory_xfer_partial. */ | |
1384 | if (!memory_xfer_check_region (readbuf, writebuf, offset, len, &len, | |
1385 | NULL)) | |
1386 | return TARGET_XFER_E_IO; | |
1387 | ||
9f713294 | 1388 | /* Request the normal memory object from other layers. */ |
9b409511 YQ |
1389 | retval = raw_memory_xfer_partial (ops, readbuf, writebuf, offset, len, |
1390 | xfered_len); | |
cf7a04e8 | 1391 | } |
9f713294 YQ |
1392 | else |
1393 | retval = ops->to_xfer_partial (ops, object, annex, readbuf, | |
9b409511 | 1394 | writebuf, offset, len, xfered_len); |
cf7a04e8 | 1395 | |
27394598 AC |
1396 | if (targetdebug) |
1397 | { | |
1398 | const unsigned char *myaddr = NULL; | |
1399 | ||
1400 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a | 1401 | "%s:target_xfer_partial " |
9b409511 | 1402 | "(%d, %s, %s, %s, %s, %s) = %d, %s", |
27394598 AC |
1403 | ops->to_shortname, |
1404 | (int) object, | |
1405 | (annex ? annex : "(null)"), | |
53b71562 JB |
1406 | host_address_to_string (readbuf), |
1407 | host_address_to_string (writebuf), | |
0b1553bc | 1408 | core_addr_to_string_nz (offset), |
9b409511 YQ |
1409 | pulongest (len), retval, |
1410 | pulongest (*xfered_len)); | |
27394598 AC |
1411 | |
1412 | if (readbuf) | |
1413 | myaddr = readbuf; | |
1414 | if (writebuf) | |
1415 | myaddr = writebuf; | |
9b409511 | 1416 | if (retval == TARGET_XFER_OK && myaddr != NULL) |
27394598 AC |
1417 | { |
1418 | int i; | |
2bc416ba | 1419 | |
27394598 | 1420 | fputs_unfiltered (", bytes =", gdb_stdlog); |
9b409511 | 1421 | for (i = 0; i < *xfered_len; i++) |
27394598 | 1422 | { |
53b71562 | 1423 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1424 | { |
1425 | if (targetdebug < 2 && i > 0) | |
1426 | { | |
1427 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
1428 | break; | |
1429 | } | |
1430 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1431 | } | |
2bc416ba | 1432 | |
27394598 AC |
1433 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
1434 | } | |
1435 | } | |
2bc416ba | 1436 | |
27394598 AC |
1437 | fputc_unfiltered ('\n', gdb_stdlog); |
1438 | } | |
9b409511 YQ |
1439 | |
1440 | /* Check implementations of to_xfer_partial update *XFERED_LEN | |
1441 | properly. Do assertion after printing debug messages, so that we | |
1442 | can find more clues on assertion failure from debugging messages. */ | |
bc113b4e | 1443 | if (retval == TARGET_XFER_OK || retval == TARGET_XFER_UNAVAILABLE) |
9b409511 YQ |
1444 | gdb_assert (*xfered_len > 0); |
1445 | ||
27394598 AC |
1446 | return retval; |
1447 | } | |
1448 | ||
578d3588 PA |
1449 | /* Read LEN bytes of target memory at address MEMADDR, placing the |
1450 | results in GDB's memory at MYADDR. Returns either 0 for success or | |
d09f2c3f | 1451 | -1 if any error occurs. |
c906108c SS |
1452 | |
1453 | If an error occurs, no guarantee is made about the contents of the data at | |
1454 | MYADDR. In particular, the caller should not depend upon partial reads | |
1455 | filling the buffer with good data. There is no way for the caller to know | |
1456 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 | 1457 | deal with partial reads should call target_read (which will retry until |
c378eb4e | 1458 | it makes no progress, and then return how much was transferred). */ |
c906108c SS |
1459 | |
1460 | int | |
1b162304 | 1461 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
c906108c | 1462 | { |
c35b1492 PA |
1463 | /* Dispatch to the topmost target, not the flattened current_target. |
1464 | Memory accesses check target->to_has_(all_)memory, and the | |
1465 | flattened target doesn't inherit those. */ | |
1466 | if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1467 | myaddr, memaddr, len) == len) |
1468 | return 0; | |
0779438d | 1469 | else |
d09f2c3f | 1470 | return -1; |
c906108c SS |
1471 | } |
1472 | ||
721ec300 GB |
1473 | /* See target/target.h. */ |
1474 | ||
1475 | int | |
1476 | target_read_uint32 (CORE_ADDR memaddr, uint32_t *result) | |
1477 | { | |
1478 | gdb_byte buf[4]; | |
1479 | int r; | |
1480 | ||
1481 | r = target_read_memory (memaddr, buf, sizeof buf); | |
1482 | if (r != 0) | |
1483 | return r; | |
1484 | *result = extract_unsigned_integer (buf, sizeof buf, | |
1485 | gdbarch_byte_order (target_gdbarch ())); | |
1486 | return 0; | |
1487 | } | |
1488 | ||
aee4bf85 PA |
1489 | /* Like target_read_memory, but specify explicitly that this is a read |
1490 | from the target's raw memory. That is, this read bypasses the | |
1491 | dcache, breakpoint shadowing, etc. */ | |
1492 | ||
1493 | int | |
1494 | target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1495 | { | |
1496 | /* See comment in target_read_memory about why the request starts at | |
1497 | current_target.beneath. */ | |
1498 | if (target_read (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, | |
1499 | myaddr, memaddr, len) == len) | |
1500 | return 0; | |
1501 | else | |
d09f2c3f | 1502 | return -1; |
aee4bf85 PA |
1503 | } |
1504 | ||
4e5d721f DE |
1505 | /* Like target_read_memory, but specify explicitly that this is a read from |
1506 | the target's stack. This may trigger different cache behavior. */ | |
1507 | ||
1508 | int | |
45aa4659 | 1509 | target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
4e5d721f | 1510 | { |
aee4bf85 PA |
1511 | /* See comment in target_read_memory about why the request starts at |
1512 | current_target.beneath. */ | |
4e5d721f DE |
1513 | if (target_read (current_target.beneath, TARGET_OBJECT_STACK_MEMORY, NULL, |
1514 | myaddr, memaddr, len) == len) | |
1515 | return 0; | |
1516 | else | |
d09f2c3f | 1517 | return -1; |
4e5d721f DE |
1518 | } |
1519 | ||
29453a14 YQ |
1520 | /* Like target_read_memory, but specify explicitly that this is a read from |
1521 | the target's code. This may trigger different cache behavior. */ | |
1522 | ||
1523 | int | |
1524 | target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1525 | { | |
aee4bf85 PA |
1526 | /* See comment in target_read_memory about why the request starts at |
1527 | current_target.beneath. */ | |
29453a14 YQ |
1528 | if (target_read (current_target.beneath, TARGET_OBJECT_CODE_MEMORY, NULL, |
1529 | myaddr, memaddr, len) == len) | |
1530 | return 0; | |
1531 | else | |
d09f2c3f | 1532 | return -1; |
29453a14 YQ |
1533 | } |
1534 | ||
7f79c47e | 1535 | /* Write LEN bytes from MYADDR to target memory at address MEMADDR. |
d09f2c3f PA |
1536 | Returns either 0 for success or -1 if any error occurs. If an |
1537 | error occurs, no guarantee is made about how much data got written. | |
1538 | Callers that can deal with partial writes should call | |
1539 | target_write. */ | |
7f79c47e | 1540 | |
c906108c | 1541 | int |
45aa4659 | 1542 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
c906108c | 1543 | { |
aee4bf85 PA |
1544 | /* See comment in target_read_memory about why the request starts at |
1545 | current_target.beneath. */ | |
c35b1492 | 1546 | if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, |
cf7a04e8 DJ |
1547 | myaddr, memaddr, len) == len) |
1548 | return 0; | |
0779438d | 1549 | else |
d09f2c3f | 1550 | return -1; |
c906108c | 1551 | } |
c5aa993b | 1552 | |
f0ba3972 | 1553 | /* Write LEN bytes from MYADDR to target raw memory at address |
d09f2c3f PA |
1554 | MEMADDR. Returns either 0 for success or -1 if any error occurs. |
1555 | If an error occurs, no guarantee is made about how much data got | |
1556 | written. Callers that can deal with partial writes should call | |
1557 | target_write. */ | |
f0ba3972 PA |
1558 | |
1559 | int | |
45aa4659 | 1560 | target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
f0ba3972 | 1561 | { |
aee4bf85 PA |
1562 | /* See comment in target_read_memory about why the request starts at |
1563 | current_target.beneath. */ | |
f0ba3972 PA |
1564 | if (target_write (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, |
1565 | myaddr, memaddr, len) == len) | |
1566 | return 0; | |
1567 | else | |
d09f2c3f | 1568 | return -1; |
f0ba3972 PA |
1569 | } |
1570 | ||
fd79ecee DJ |
1571 | /* Fetch the target's memory map. */ |
1572 | ||
a664f67e | 1573 | std::vector<mem_region> |
fd79ecee DJ |
1574 | target_memory_map (void) |
1575 | { | |
a664f67e SM |
1576 | std::vector<mem_region> result |
1577 | = current_target.to_memory_map (¤t_target); | |
1578 | if (result.empty ()) | |
1579 | return result; | |
fd79ecee | 1580 | |
a664f67e | 1581 | std::sort (result.begin (), result.end ()); |
fd79ecee DJ |
1582 | |
1583 | /* Check that regions do not overlap. Simultaneously assign | |
1584 | a numbering for the "mem" commands to use to refer to | |
1585 | each region. */ | |
a664f67e SM |
1586 | mem_region *last_one = NULL; |
1587 | for (size_t ix = 0; ix < result.size (); ix++) | |
fd79ecee | 1588 | { |
a664f67e | 1589 | mem_region *this_one = &result[ix]; |
fd79ecee DJ |
1590 | this_one->number = ix; |
1591 | ||
a664f67e | 1592 | if (last_one != NULL && last_one->hi > this_one->lo) |
fd79ecee DJ |
1593 | { |
1594 | warning (_("Overlapping regions in memory map: ignoring")); | |
a664f67e | 1595 | return std::vector<mem_region> (); |
fd79ecee | 1596 | } |
a664f67e | 1597 | |
fd79ecee DJ |
1598 | last_one = this_one; |
1599 | } | |
1600 | ||
1601 | return result; | |
1602 | } | |
1603 | ||
a76d924d DJ |
1604 | void |
1605 | target_flash_erase (ULONGEST address, LONGEST length) | |
1606 | { | |
e8a6c6ac | 1607 | current_target.to_flash_erase (¤t_target, address, length); |
a76d924d DJ |
1608 | } |
1609 | ||
1610 | void | |
1611 | target_flash_done (void) | |
1612 | { | |
f6fb2925 | 1613 | current_target.to_flash_done (¤t_target); |
a76d924d DJ |
1614 | } |
1615 | ||
920d2a44 AC |
1616 | static void |
1617 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1618 | struct cmd_list_element *c, const char *value) | |
1619 | { | |
3e43a32a MS |
1620 | fprintf_filtered (file, |
1621 | _("Mode for reading from readonly sections is %s.\n"), | |
920d2a44 AC |
1622 | value); |
1623 | } | |
3a11626d | 1624 | |
7f79c47e | 1625 | /* Target vector read/write partial wrapper functions. */ |
0088c768 | 1626 | |
9b409511 | 1627 | static enum target_xfer_status |
1e3ff5ad AC |
1628 | target_read_partial (struct target_ops *ops, |
1629 | enum target_object object, | |
1b0ba102 | 1630 | const char *annex, gdb_byte *buf, |
9b409511 YQ |
1631 | ULONGEST offset, ULONGEST len, |
1632 | ULONGEST *xfered_len) | |
1e3ff5ad | 1633 | { |
9b409511 YQ |
1634 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len, |
1635 | xfered_len); | |
1e3ff5ad AC |
1636 | } |
1637 | ||
8a55ffb0 | 1638 | static enum target_xfer_status |
1e3ff5ad AC |
1639 | target_write_partial (struct target_ops *ops, |
1640 | enum target_object object, | |
1b0ba102 | 1641 | const char *annex, const gdb_byte *buf, |
9b409511 | 1642 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len) |
1e3ff5ad | 1643 | { |
9b409511 YQ |
1644 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len, |
1645 | xfered_len); | |
1e3ff5ad AC |
1646 | } |
1647 | ||
1648 | /* Wrappers to perform the full transfer. */ | |
7f79c47e DE |
1649 | |
1650 | /* For docs on target_read see target.h. */ | |
1651 | ||
1e3ff5ad AC |
1652 | LONGEST |
1653 | target_read (struct target_ops *ops, | |
1654 | enum target_object object, | |
1b0ba102 | 1655 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1656 | ULONGEST offset, LONGEST len) |
1657 | { | |
279a6fed | 1658 | LONGEST xfered_total = 0; |
d309493c SM |
1659 | int unit_size = 1; |
1660 | ||
1661 | /* If we are reading from a memory object, find the length of an addressable | |
1662 | unit for that architecture. */ | |
1663 | if (object == TARGET_OBJECT_MEMORY | |
1664 | || object == TARGET_OBJECT_STACK_MEMORY | |
1665 | || object == TARGET_OBJECT_CODE_MEMORY | |
1666 | || object == TARGET_OBJECT_RAW_MEMORY) | |
1667 | unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); | |
5d502164 | 1668 | |
279a6fed | 1669 | while (xfered_total < len) |
1e3ff5ad | 1670 | { |
279a6fed | 1671 | ULONGEST xfered_partial; |
9b409511 YQ |
1672 | enum target_xfer_status status; |
1673 | ||
1674 | status = target_read_partial (ops, object, annex, | |
d309493c | 1675 | buf + xfered_total * unit_size, |
279a6fed SM |
1676 | offset + xfered_total, len - xfered_total, |
1677 | &xfered_partial); | |
5d502164 | 1678 | |
1e3ff5ad | 1679 | /* Call an observer, notifying them of the xfer progress? */ |
9b409511 | 1680 | if (status == TARGET_XFER_EOF) |
279a6fed | 1681 | return xfered_total; |
9b409511 YQ |
1682 | else if (status == TARGET_XFER_OK) |
1683 | { | |
279a6fed | 1684 | xfered_total += xfered_partial; |
9b409511 YQ |
1685 | QUIT; |
1686 | } | |
1687 | else | |
279a6fed | 1688 | return TARGET_XFER_E_IO; |
9b409511 | 1689 | |
1e3ff5ad AC |
1690 | } |
1691 | return len; | |
1692 | } | |
1693 | ||
f1a507a1 JB |
1694 | /* Assuming that the entire [begin, end) range of memory cannot be |
1695 | read, try to read whatever subrange is possible to read. | |
1696 | ||
1697 | The function returns, in RESULT, either zero or one memory block. | |
1698 | If there's a readable subrange at the beginning, it is completely | |
1699 | read and returned. Any further readable subrange will not be read. | |
1700 | Otherwise, if there's a readable subrange at the end, it will be | |
1701 | completely read and returned. Any readable subranges before it | |
1702 | (obviously, not starting at the beginning), will be ignored. In | |
1703 | other cases -- either no readable subrange, or readable subrange(s) | |
1704 | that is neither at the beginning, or end, nothing is returned. | |
1705 | ||
1706 | The purpose of this function is to handle a read across a boundary | |
1707 | of accessible memory in a case when memory map is not available. | |
1708 | The above restrictions are fine for this case, but will give | |
1709 | incorrect results if the memory is 'patchy'. However, supporting | |
1710 | 'patchy' memory would require trying to read every single byte, | |
1711 | and it seems unacceptable solution. Explicit memory map is | |
1712 | recommended for this case -- and target_read_memory_robust will | |
1713 | take care of reading multiple ranges then. */ | |
8dedea02 VP |
1714 | |
1715 | static void | |
3e43a32a | 1716 | read_whatever_is_readable (struct target_ops *ops, |
279a6fed | 1717 | const ULONGEST begin, const ULONGEST end, |
d309493c | 1718 | int unit_size, |
386c8614 | 1719 | std::vector<memory_read_result> *result) |
d5086790 | 1720 | { |
8dedea02 VP |
1721 | ULONGEST current_begin = begin; |
1722 | ULONGEST current_end = end; | |
1723 | int forward; | |
9b409511 | 1724 | ULONGEST xfered_len; |
8dedea02 VP |
1725 | |
1726 | /* If we previously failed to read 1 byte, nothing can be done here. */ | |
1727 | if (end - begin <= 1) | |
386c8614 TT |
1728 | return; |
1729 | ||
1730 | gdb::unique_xmalloc_ptr<gdb_byte> buf ((gdb_byte *) xmalloc (end - begin)); | |
8dedea02 VP |
1731 | |
1732 | /* Check that either first or the last byte is readable, and give up | |
c378eb4e | 1733 | if not. This heuristic is meant to permit reading accessible memory |
8dedea02 VP |
1734 | at the boundary of accessible region. */ |
1735 | if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
386c8614 | 1736 | buf.get (), begin, 1, &xfered_len) == TARGET_XFER_OK) |
8dedea02 VP |
1737 | { |
1738 | forward = 1; | |
1739 | ++current_begin; | |
1740 | } | |
1741 | else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
386c8614 | 1742 | buf.get () + (end - begin) - 1, end - 1, 1, |
9b409511 | 1743 | &xfered_len) == TARGET_XFER_OK) |
8dedea02 VP |
1744 | { |
1745 | forward = 0; | |
1746 | --current_end; | |
1747 | } | |
1748 | else | |
386c8614 | 1749 | return; |
8dedea02 VP |
1750 | |
1751 | /* Loop invariant is that the [current_begin, current_end) was previously | |
1752 | found to be not readable as a whole. | |
1753 | ||
1754 | Note loop condition -- if the range has 1 byte, we can't divide the range | |
1755 | so there's no point trying further. */ | |
1756 | while (current_end - current_begin > 1) | |
1757 | { | |
1758 | ULONGEST first_half_begin, first_half_end; | |
1759 | ULONGEST second_half_begin, second_half_end; | |
1760 | LONGEST xfer; | |
279a6fed | 1761 | ULONGEST middle = current_begin + (current_end - current_begin) / 2; |
f1a507a1 | 1762 | |
8dedea02 VP |
1763 | if (forward) |
1764 | { | |
1765 | first_half_begin = current_begin; | |
1766 | first_half_end = middle; | |
1767 | second_half_begin = middle; | |
1768 | second_half_end = current_end; | |
1769 | } | |
1770 | else | |
1771 | { | |
1772 | first_half_begin = middle; | |
1773 | first_half_end = current_end; | |
1774 | second_half_begin = current_begin; | |
1775 | second_half_end = middle; | |
1776 | } | |
1777 | ||
1778 | xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
386c8614 | 1779 | buf.get () + (first_half_begin - begin) * unit_size, |
8dedea02 VP |
1780 | first_half_begin, |
1781 | first_half_end - first_half_begin); | |
1782 | ||
1783 | if (xfer == first_half_end - first_half_begin) | |
1784 | { | |
c378eb4e | 1785 | /* This half reads up fine. So, the error must be in the |
3e43a32a | 1786 | other half. */ |
8dedea02 VP |
1787 | current_begin = second_half_begin; |
1788 | current_end = second_half_end; | |
1789 | } | |
1790 | else | |
1791 | { | |
c378eb4e | 1792 | /* This half is not readable. Because we've tried one byte, we |
279a6fed | 1793 | know some part of this half if actually readable. Go to the next |
8dedea02 VP |
1794 | iteration to divide again and try to read. |
1795 | ||
1796 | We don't handle the other half, because this function only tries | |
1797 | to read a single readable subrange. */ | |
1798 | current_begin = first_half_begin; | |
1799 | current_end = first_half_end; | |
1800 | } | |
1801 | } | |
1802 | ||
1803 | if (forward) | |
1804 | { | |
1805 | /* The [begin, current_begin) range has been read. */ | |
386c8614 | 1806 | result->emplace_back (begin, current_end, std::move (buf)); |
8dedea02 VP |
1807 | } |
1808 | else | |
1809 | { | |
1810 | /* The [current_end, end) range has been read. */ | |
279a6fed | 1811 | LONGEST region_len = end - current_end; |
f1a507a1 | 1812 | |
386c8614 TT |
1813 | gdb::unique_xmalloc_ptr<gdb_byte> data |
1814 | ((gdb_byte *) xmalloc (region_len * unit_size)); | |
1815 | memcpy (data.get (), buf.get () + (current_end - begin) * unit_size, | |
d309493c | 1816 | region_len * unit_size); |
386c8614 | 1817 | result->emplace_back (current_end, end, std::move (data)); |
8dedea02 | 1818 | } |
8dedea02 VP |
1819 | } |
1820 | ||
386c8614 | 1821 | std::vector<memory_read_result> |
279a6fed SM |
1822 | read_memory_robust (struct target_ops *ops, |
1823 | const ULONGEST offset, const LONGEST len) | |
8dedea02 | 1824 | { |
386c8614 | 1825 | std::vector<memory_read_result> result; |
d309493c | 1826 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
8dedea02 | 1827 | |
279a6fed SM |
1828 | LONGEST xfered_total = 0; |
1829 | while (xfered_total < len) | |
d5086790 | 1830 | { |
279a6fed SM |
1831 | struct mem_region *region = lookup_mem_region (offset + xfered_total); |
1832 | LONGEST region_len; | |
5d502164 | 1833 | |
8dedea02 VP |
1834 | /* If there is no explicit region, a fake one should be created. */ |
1835 | gdb_assert (region); | |
1836 | ||
1837 | if (region->hi == 0) | |
279a6fed | 1838 | region_len = len - xfered_total; |
8dedea02 | 1839 | else |
279a6fed | 1840 | region_len = region->hi - offset; |
8dedea02 VP |
1841 | |
1842 | if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO) | |
d5086790 | 1843 | { |
c378eb4e | 1844 | /* Cannot read this region. Note that we can end up here only |
8dedea02 VP |
1845 | if the region is explicitly marked inaccessible, or |
1846 | 'inaccessible-by-default' is in effect. */ | |
279a6fed | 1847 | xfered_total += region_len; |
8dedea02 VP |
1848 | } |
1849 | else | |
1850 | { | |
325fac50 | 1851 | LONGEST to_read = std::min (len - xfered_total, region_len); |
386c8614 TT |
1852 | gdb::unique_xmalloc_ptr<gdb_byte> buffer |
1853 | ((gdb_byte *) xmalloc (to_read * unit_size)); | |
8dedea02 | 1854 | |
279a6fed | 1855 | LONGEST xfered_partial = |
386c8614 | 1856 | target_read (ops, TARGET_OBJECT_MEMORY, NULL, buffer.get (), |
279a6fed | 1857 | offset + xfered_total, to_read); |
8dedea02 | 1858 | /* Call an observer, notifying them of the xfer progress? */ |
279a6fed | 1859 | if (xfered_partial <= 0) |
d5086790 | 1860 | { |
c378eb4e | 1861 | /* Got an error reading full chunk. See if maybe we can read |
8dedea02 | 1862 | some subrange. */ |
e084c964 DB |
1863 | read_whatever_is_readable (ops, offset + xfered_total, |
1864 | offset + xfered_total + to_read, | |
1865 | unit_size, &result); | |
279a6fed | 1866 | xfered_total += to_read; |
d5086790 | 1867 | } |
8dedea02 VP |
1868 | else |
1869 | { | |
386c8614 TT |
1870 | result.emplace_back (offset + xfered_total, |
1871 | offset + xfered_total + xfered_partial, | |
1872 | std::move (buffer)); | |
279a6fed | 1873 | xfered_total += xfered_partial; |
8dedea02 VP |
1874 | } |
1875 | QUIT; | |
d5086790 | 1876 | } |
d5086790 | 1877 | } |
9d78f827 | 1878 | |
8dedea02 | 1879 | return result; |
d5086790 VP |
1880 | } |
1881 | ||
8dedea02 | 1882 | |
cf7a04e8 DJ |
1883 | /* An alternative to target_write with progress callbacks. */ |
1884 | ||
1e3ff5ad | 1885 | LONGEST |
cf7a04e8 DJ |
1886 | target_write_with_progress (struct target_ops *ops, |
1887 | enum target_object object, | |
1888 | const char *annex, const gdb_byte *buf, | |
1889 | ULONGEST offset, LONGEST len, | |
1890 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad | 1891 | { |
279a6fed | 1892 | LONGEST xfered_total = 0; |
d309493c SM |
1893 | int unit_size = 1; |
1894 | ||
1895 | /* If we are writing to a memory object, find the length of an addressable | |
1896 | unit for that architecture. */ | |
1897 | if (object == TARGET_OBJECT_MEMORY | |
1898 | || object == TARGET_OBJECT_STACK_MEMORY | |
1899 | || object == TARGET_OBJECT_CODE_MEMORY | |
1900 | || object == TARGET_OBJECT_RAW_MEMORY) | |
1901 | unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); | |
a76d924d DJ |
1902 | |
1903 | /* Give the progress callback a chance to set up. */ | |
1904 | if (progress) | |
1905 | (*progress) (0, baton); | |
1906 | ||
279a6fed | 1907 | while (xfered_total < len) |
1e3ff5ad | 1908 | { |
279a6fed | 1909 | ULONGEST xfered_partial; |
9b409511 YQ |
1910 | enum target_xfer_status status; |
1911 | ||
1912 | status = target_write_partial (ops, object, annex, | |
d309493c | 1913 | buf + xfered_total * unit_size, |
279a6fed SM |
1914 | offset + xfered_total, len - xfered_total, |
1915 | &xfered_partial); | |
cf7a04e8 | 1916 | |
5c328c05 | 1917 | if (status != TARGET_XFER_OK) |
279a6fed | 1918 | return status == TARGET_XFER_EOF ? xfered_total : TARGET_XFER_E_IO; |
cf7a04e8 DJ |
1919 | |
1920 | if (progress) | |
279a6fed | 1921 | (*progress) (xfered_partial, baton); |
cf7a04e8 | 1922 | |
279a6fed | 1923 | xfered_total += xfered_partial; |
1e3ff5ad AC |
1924 | QUIT; |
1925 | } | |
1926 | return len; | |
1927 | } | |
1928 | ||
7f79c47e DE |
1929 | /* For docs on target_write see target.h. */ |
1930 | ||
cf7a04e8 DJ |
1931 | LONGEST |
1932 | target_write (struct target_ops *ops, | |
1933 | enum target_object object, | |
1934 | const char *annex, const gdb_byte *buf, | |
1935 | ULONGEST offset, LONGEST len) | |
1936 | { | |
1937 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
1938 | NULL, NULL); | |
1939 | } | |
1940 | ||
9018be22 SM |
1941 | /* Help for target_read_alloc and target_read_stralloc. See their comments |
1942 | for details. */ | |
13547ab6 | 1943 | |
9018be22 SM |
1944 | template <typename T> |
1945 | gdb::optional<gdb::def_vector<T>> | |
159f81f3 | 1946 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, |
9018be22 | 1947 | const char *annex) |
13547ab6 | 1948 | { |
9018be22 SM |
1949 | gdb::def_vector<T> buf; |
1950 | size_t buf_pos = 0; | |
1951 | const int chunk = 4096; | |
13547ab6 DJ |
1952 | |
1953 | /* This function does not have a length parameter; it reads the | |
1954 | entire OBJECT). Also, it doesn't support objects fetched partly | |
1955 | from one target and partly from another (in a different stratum, | |
1956 | e.g. a core file and an executable). Both reasons make it | |
1957 | unsuitable for reading memory. */ | |
1958 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
1959 | ||
1960 | /* Start by reading up to 4K at a time. The target will throttle | |
1961 | this number down if necessary. */ | |
13547ab6 DJ |
1962 | while (1) |
1963 | { | |
9b409511 YQ |
1964 | ULONGEST xfered_len; |
1965 | enum target_xfer_status status; | |
1966 | ||
9018be22 SM |
1967 | buf.resize (buf_pos + chunk); |
1968 | ||
1969 | status = target_read_partial (ops, object, annex, | |
1970 | (gdb_byte *) &buf[buf_pos], | |
1971 | buf_pos, chunk, | |
9b409511 YQ |
1972 | &xfered_len); |
1973 | ||
1974 | if (status == TARGET_XFER_EOF) | |
13547ab6 DJ |
1975 | { |
1976 | /* Read all there was. */ | |
9018be22 SM |
1977 | buf.resize (buf_pos); |
1978 | return buf; | |
13547ab6 | 1979 | } |
9b409511 YQ |
1980 | else if (status != TARGET_XFER_OK) |
1981 | { | |
1982 | /* An error occurred. */ | |
9018be22 | 1983 | return {}; |
9b409511 | 1984 | } |
13547ab6 | 1985 | |
9b409511 | 1986 | buf_pos += xfered_len; |
13547ab6 | 1987 | |
13547ab6 DJ |
1988 | QUIT; |
1989 | } | |
1990 | } | |
1991 | ||
9018be22 | 1992 | /* See target.h */ |
159f81f3 | 1993 | |
9018be22 | 1994 | gdb::optional<gdb::byte_vector> |
159f81f3 | 1995 | target_read_alloc (struct target_ops *ops, enum target_object object, |
9018be22 | 1996 | const char *annex) |
159f81f3 | 1997 | { |
9018be22 | 1998 | return target_read_alloc_1<gdb_byte> (ops, object, annex); |
159f81f3 DJ |
1999 | } |
2000 | ||
b7b030ad | 2001 | /* See target.h. */ |
159f81f3 | 2002 | |
9018be22 | 2003 | gdb::optional<gdb::char_vector> |
159f81f3 DJ |
2004 | target_read_stralloc (struct target_ops *ops, enum target_object object, |
2005 | const char *annex) | |
2006 | { | |
9018be22 SM |
2007 | gdb::optional<gdb::char_vector> buf |
2008 | = target_read_alloc_1<char> (ops, object, annex); | |
159f81f3 | 2009 | |
9018be22 SM |
2010 | if (!buf) |
2011 | return {}; | |
159f81f3 | 2012 | |
9018be22 SM |
2013 | if (buf->back () != '\0') |
2014 | buf->push_back ('\0'); | |
7313baad UW |
2015 | |
2016 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
9018be22 SM |
2017 | for (auto it = std::find (buf->begin (), buf->end (), '\0'); |
2018 | it != buf->end (); it++) | |
2019 | if (*it != '\0') | |
7313baad UW |
2020 | { |
2021 | warning (_("target object %d, annex %s, " | |
2022 | "contained unexpected null characters"), | |
2023 | (int) object, annex ? annex : "(none)"); | |
2024 | break; | |
2025 | } | |
159f81f3 | 2026 | |
9018be22 | 2027 | return buf; |
159f81f3 DJ |
2028 | } |
2029 | ||
b6591e8b AC |
2030 | /* Memory transfer methods. */ |
2031 | ||
2032 | void | |
1b0ba102 | 2033 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
2034 | LONGEST len) |
2035 | { | |
07b82ea5 PA |
2036 | /* This method is used to read from an alternate, non-current |
2037 | target. This read must bypass the overlay support (as symbols | |
2038 | don't match this target), and GDB's internal cache (wrong cache | |
2039 | for this target). */ | |
2040 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) | |
b6591e8b | 2041 | != len) |
578d3588 | 2042 | memory_error (TARGET_XFER_E_IO, addr); |
b6591e8b AC |
2043 | } |
2044 | ||
2045 | ULONGEST | |
5d502164 MS |
2046 | get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr, |
2047 | int len, enum bfd_endian byte_order) | |
b6591e8b | 2048 | { |
f6519ebc | 2049 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
2050 | |
2051 | gdb_assert (len <= sizeof (buf)); | |
2052 | get_target_memory (ops, addr, buf, len); | |
e17a4113 | 2053 | return extract_unsigned_integer (buf, len, byte_order); |
b6591e8b AC |
2054 | } |
2055 | ||
3db08215 MM |
2056 | /* See target.h. */ |
2057 | ||
d914c394 SS |
2058 | int |
2059 | target_insert_breakpoint (struct gdbarch *gdbarch, | |
2060 | struct bp_target_info *bp_tgt) | |
2061 | { | |
2062 | if (!may_insert_breakpoints) | |
2063 | { | |
2064 | warning (_("May not insert breakpoints")); | |
2065 | return 1; | |
2066 | } | |
2067 | ||
6b84065d TT |
2068 | return current_target.to_insert_breakpoint (¤t_target, |
2069 | gdbarch, bp_tgt); | |
d914c394 SS |
2070 | } |
2071 | ||
3db08215 MM |
2072 | /* See target.h. */ |
2073 | ||
d914c394 | 2074 | int |
6b84065d | 2075 | target_remove_breakpoint (struct gdbarch *gdbarch, |
73971819 PA |
2076 | struct bp_target_info *bp_tgt, |
2077 | enum remove_bp_reason reason) | |
d914c394 SS |
2078 | { |
2079 | /* This is kind of a weird case to handle, but the permission might | |
2080 | have been changed after breakpoints were inserted - in which case | |
2081 | we should just take the user literally and assume that any | |
2082 | breakpoints should be left in place. */ | |
2083 | if (!may_insert_breakpoints) | |
2084 | { | |
2085 | warning (_("May not remove breakpoints")); | |
2086 | return 1; | |
2087 | } | |
2088 | ||
6b84065d | 2089 | return current_target.to_remove_breakpoint (¤t_target, |
73971819 | 2090 | gdbarch, bp_tgt, reason); |
d914c394 SS |
2091 | } |
2092 | ||
c906108c | 2093 | static void |
1d12d88f | 2094 | info_target_command (const char *args, int from_tty) |
c906108c SS |
2095 | { |
2096 | struct target_ops *t; | |
c906108c | 2097 | int has_all_mem = 0; |
c5aa993b | 2098 | |
c906108c | 2099 | if (symfile_objfile != NULL) |
4262abfb JK |
2100 | printf_unfiltered (_("Symbols from \"%s\".\n"), |
2101 | objfile_name (symfile_objfile)); | |
c906108c | 2102 | |
258b763a | 2103 | for (t = target_stack; t != NULL; t = t->beneath) |
c906108c | 2104 | { |
c35b1492 | 2105 | if (!(*t->to_has_memory) (t)) |
c906108c SS |
2106 | continue; |
2107 | ||
c5aa993b | 2108 | if ((int) (t->to_stratum) <= (int) dummy_stratum) |
c906108c SS |
2109 | continue; |
2110 | if (has_all_mem) | |
3e43a32a MS |
2111 | printf_unfiltered (_("\tWhile running this, " |
2112 | "GDB does not access memory from...\n")); | |
c5aa993b JM |
2113 | printf_unfiltered ("%s:\n", t->to_longname); |
2114 | (t->to_files_info) (t); | |
c35b1492 | 2115 | has_all_mem = (*t->to_has_all_memory) (t); |
c906108c SS |
2116 | } |
2117 | } | |
2118 | ||
fd79ecee DJ |
2119 | /* This function is called before any new inferior is created, e.g. |
2120 | by running a program, attaching, or connecting to a target. | |
2121 | It cleans up any state from previous invocations which might | |
2122 | change between runs. This is a subset of what target_preopen | |
2123 | resets (things which might change between targets). */ | |
2124 | ||
2125 | void | |
2126 | target_pre_inferior (int from_tty) | |
2127 | { | |
c378eb4e | 2128 | /* Clear out solib state. Otherwise the solib state of the previous |
b9db4ced | 2129 | inferior might have survived and is entirely wrong for the new |
c378eb4e | 2130 | target. This has been observed on GNU/Linux using glibc 2.3. How |
b9db4ced UW |
2131 | to reproduce: |
2132 | ||
2133 | bash$ ./foo& | |
2134 | [1] 4711 | |
2135 | bash$ ./foo& | |
2136 | [1] 4712 | |
2137 | bash$ gdb ./foo | |
2138 | [...] | |
2139 | (gdb) attach 4711 | |
2140 | (gdb) detach | |
2141 | (gdb) attach 4712 | |
2142 | Cannot access memory at address 0xdeadbeef | |
2143 | */ | |
b9db4ced | 2144 | |
50c71eaf PA |
2145 | /* In some OSs, the shared library list is the same/global/shared |
2146 | across inferiors. If code is shared between processes, so are | |
2147 | memory regions and features. */ | |
f5656ead | 2148 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
50c71eaf PA |
2149 | { |
2150 | no_shared_libraries (NULL, from_tty); | |
2151 | ||
2152 | invalidate_target_mem_regions (); | |
424163ea | 2153 | |
50c71eaf PA |
2154 | target_clear_description (); |
2155 | } | |
8ffcbaaf | 2156 | |
e9756d52 PP |
2157 | /* attach_flag may be set if the previous process associated with |
2158 | the inferior was attached to. */ | |
2159 | current_inferior ()->attach_flag = 0; | |
2160 | ||
5d5658a1 PA |
2161 | current_inferior ()->highest_thread_num = 0; |
2162 | ||
8ffcbaaf | 2163 | agent_capability_invalidate (); |
fd79ecee DJ |
2164 | } |
2165 | ||
b8fa0bfa PA |
2166 | /* Callback for iterate_over_inferiors. Gets rid of the given |
2167 | inferior. */ | |
2168 | ||
2169 | static int | |
2170 | dispose_inferior (struct inferior *inf, void *args) | |
2171 | { | |
2172 | struct thread_info *thread; | |
2173 | ||
2174 | thread = any_thread_of_process (inf->pid); | |
2175 | if (thread) | |
2176 | { | |
2177 | switch_to_thread (thread->ptid); | |
2178 | ||
2179 | /* Core inferiors actually should be detached, not killed. */ | |
2180 | if (target_has_execution) | |
2181 | target_kill (); | |
2182 | else | |
6e1e1966 | 2183 | target_detach (inf, 0); |
b8fa0bfa PA |
2184 | } |
2185 | ||
2186 | return 0; | |
2187 | } | |
2188 | ||
c906108c SS |
2189 | /* This is to be called by the open routine before it does |
2190 | anything. */ | |
2191 | ||
2192 | void | |
fba45db2 | 2193 | target_preopen (int from_tty) |
c906108c | 2194 | { |
c5aa993b | 2195 | dont_repeat (); |
c906108c | 2196 | |
b8fa0bfa | 2197 | if (have_inferiors ()) |
c5aa993b | 2198 | { |
adf40b2e | 2199 | if (!from_tty |
b8fa0bfa PA |
2200 | || !have_live_inferiors () |
2201 | || query (_("A program is being debugged already. Kill it? "))) | |
2202 | iterate_over_inferiors (dispose_inferior, NULL); | |
c906108c | 2203 | else |
8a3fe4f8 | 2204 | error (_("Program not killed.")); |
c906108c SS |
2205 | } |
2206 | ||
2207 | /* Calling target_kill may remove the target from the stack. But if | |
2208 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
2209 | /* Leave the exec target, though. The user may be switching from a |
2210 | live process to a core of the same program. */ | |
460014f5 | 2211 | pop_all_targets_above (file_stratum); |
fd79ecee DJ |
2212 | |
2213 | target_pre_inferior (from_tty); | |
c906108c SS |
2214 | } |
2215 | ||
6bd6f3b6 | 2216 | /* See target.h. */ |
c906108c SS |
2217 | |
2218 | void | |
6e1e1966 | 2219 | target_detach (inferior *inf, int from_tty) |
c906108c | 2220 | { |
6e1e1966 SM |
2221 | /* As long as some to_detach implementations rely on the current_inferior |
2222 | (either directly, or indirectly, like through target_gdbarch or by | |
2223 | reading memory), INF needs to be the current inferior. When that | |
2224 | requirement will become no longer true, then we can remove this | |
2225 | assertion. */ | |
2226 | gdb_assert (inf == current_inferior ()); | |
2227 | ||
f5656ead | 2228 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
2229 | /* Don't remove global breakpoints here. They're removed on |
2230 | disconnection from the target. */ | |
2231 | ; | |
2232 | else | |
2233 | /* If we're in breakpoints-always-inserted mode, have to remove | |
2234 | them before detaching. */ | |
dfd4cc63 | 2235 | remove_breakpoints_pid (ptid_get_pid (inferior_ptid)); |
74960c60 | 2236 | |
24291992 PA |
2237 | prepare_for_detach (); |
2238 | ||
6e1e1966 | 2239 | current_target.to_detach (¤t_target, inf, from_tty); |
c906108c SS |
2240 | } |
2241 | ||
6ad8ae5c | 2242 | void |
fee354ee | 2243 | target_disconnect (const char *args, int from_tty) |
6ad8ae5c | 2244 | { |
50c71eaf PA |
2245 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
2246 | are global across processes, we have to remove them before | |
2247 | disconnecting. */ | |
74960c60 VP |
2248 | remove_breakpoints (); |
2249 | ||
86a0854a | 2250 | current_target.to_disconnect (¤t_target, args, from_tty); |
6ad8ae5c DJ |
2251 | } |
2252 | ||
f2b9e3df SDJ |
2253 | /* See target/target.h. */ |
2254 | ||
117de6a9 | 2255 | ptid_t |
47608cb1 | 2256 | target_wait (ptid_t ptid, struct target_waitstatus *status, int options) |
117de6a9 | 2257 | { |
a7068b60 | 2258 | return (current_target.to_wait) (¤t_target, ptid, status, options); |
117de6a9 PA |
2259 | } |
2260 | ||
0b333c5e PA |
2261 | /* See target.h. */ |
2262 | ||
2263 | ptid_t | |
2264 | default_target_wait (struct target_ops *ops, | |
2265 | ptid_t ptid, struct target_waitstatus *status, | |
2266 | int options) | |
2267 | { | |
2268 | status->kind = TARGET_WAITKIND_IGNORE; | |
2269 | return minus_one_ptid; | |
2270 | } | |
2271 | ||
7a114964 | 2272 | const char * |
117de6a9 PA |
2273 | target_pid_to_str (ptid_t ptid) |
2274 | { | |
770234d3 | 2275 | return (*current_target.to_pid_to_str) (¤t_target, ptid); |
117de6a9 PA |
2276 | } |
2277 | ||
73ede765 | 2278 | const char * |
4694da01 TT |
2279 | target_thread_name (struct thread_info *info) |
2280 | { | |
825828fc | 2281 | return current_target.to_thread_name (¤t_target, info); |
4694da01 TT |
2282 | } |
2283 | ||
e04ee09e KB |
2284 | struct thread_info * |
2285 | target_thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
2286 | int handle_len, | |
2287 | struct inferior *inf) | |
2288 | { | |
2289 | return current_target.to_thread_handle_to_thread_info | |
2290 | (¤t_target, thread_handle, handle_len, inf); | |
2291 | } | |
2292 | ||
e1ac3328 | 2293 | void |
2ea28649 | 2294 | target_resume (ptid_t ptid, int step, enum gdb_signal signal) |
e1ac3328 | 2295 | { |
4e5d721f | 2296 | target_dcache_invalidate (); |
28439f5e | 2297 | |
6b84065d | 2298 | current_target.to_resume (¤t_target, ptid, step, signal); |
28439f5e | 2299 | |
6b84065d | 2300 | registers_changed_ptid (ptid); |
251bde03 PA |
2301 | /* We only set the internal executing state here. The user/frontend |
2302 | running state is set at a higher level. */ | |
6b84065d | 2303 | set_executing (ptid, 1); |
6b84065d | 2304 | clear_inline_frame_state (ptid); |
e1ac3328 | 2305 | } |
2455069d | 2306 | |
85ad3aaf PA |
2307 | /* If true, target_commit_resume is a nop. */ |
2308 | static int defer_target_commit_resume; | |
2309 | ||
2310 | /* See target.h. */ | |
2311 | ||
2312 | void | |
2313 | target_commit_resume (void) | |
2314 | { | |
85ad3aaf PA |
2315 | if (defer_target_commit_resume) |
2316 | return; | |
2317 | ||
2318 | current_target.to_commit_resume (¤t_target); | |
2319 | } | |
2320 | ||
2321 | /* See target.h. */ | |
2322 | ||
a9bc57b9 TT |
2323 | scoped_restore_tmpl<int> |
2324 | make_scoped_defer_target_commit_resume () | |
85ad3aaf | 2325 | { |
a9bc57b9 | 2326 | return make_scoped_restore (&defer_target_commit_resume, 1); |
85ad3aaf PA |
2327 | } |
2328 | ||
2455069d UW |
2329 | void |
2330 | target_pass_signals (int numsigs, unsigned char *pass_signals) | |
2331 | { | |
035cad7f | 2332 | (*current_target.to_pass_signals) (¤t_target, numsigs, pass_signals); |
2455069d UW |
2333 | } |
2334 | ||
9b224c5e PA |
2335 | void |
2336 | target_program_signals (int numsigs, unsigned char *program_signals) | |
2337 | { | |
7d4f8efa TT |
2338 | (*current_target.to_program_signals) (¤t_target, |
2339 | numsigs, program_signals); | |
9b224c5e PA |
2340 | } |
2341 | ||
098dba18 TT |
2342 | static int |
2343 | default_follow_fork (struct target_ops *self, int follow_child, | |
2344 | int detach_fork) | |
2345 | { | |
2346 | /* Some target returned a fork event, but did not know how to follow it. */ | |
2347 | internal_error (__FILE__, __LINE__, | |
2348 | _("could not find a target to follow fork")); | |
2349 | } | |
2350 | ||
ee057212 DJ |
2351 | /* Look through the list of possible targets for a target that can |
2352 | follow forks. */ | |
2353 | ||
2354 | int | |
07107ca6 | 2355 | target_follow_fork (int follow_child, int detach_fork) |
ee057212 | 2356 | { |
a7068b60 TT |
2357 | return current_target.to_follow_fork (¤t_target, |
2358 | follow_child, detach_fork); | |
ee057212 DJ |
2359 | } |
2360 | ||
94585166 DB |
2361 | /* Target wrapper for follow exec hook. */ |
2362 | ||
2363 | void | |
2364 | target_follow_exec (struct inferior *inf, char *execd_pathname) | |
2365 | { | |
2366 | current_target.to_follow_exec (¤t_target, inf, execd_pathname); | |
2367 | } | |
2368 | ||
8d657035 TT |
2369 | static void |
2370 | default_mourn_inferior (struct target_ops *self) | |
2371 | { | |
2372 | internal_error (__FILE__, __LINE__, | |
2373 | _("could not find a target to follow mourn inferior")); | |
2374 | } | |
2375 | ||
136d6dae | 2376 | void |
bc1e6c81 | 2377 | target_mourn_inferior (ptid_t ptid) |
136d6dae | 2378 | { |
bc1e6c81 | 2379 | gdb_assert (ptid_equal (ptid, inferior_ptid)); |
8d657035 | 2380 | current_target.to_mourn_inferior (¤t_target); |
136d6dae | 2381 | |
8d657035 TT |
2382 | /* We no longer need to keep handles on any of the object files. |
2383 | Make sure to release them to avoid unnecessarily locking any | |
2384 | of them while we're not actually debugging. */ | |
2385 | bfd_cache_close_all (); | |
136d6dae VP |
2386 | } |
2387 | ||
424163ea DJ |
2388 | /* Look for a target which can describe architectural features, starting |
2389 | from TARGET. If we find one, return its description. */ | |
2390 | ||
2391 | const struct target_desc * | |
2392 | target_read_description (struct target_ops *target) | |
2393 | { | |
2117c711 | 2394 | return target->to_read_description (target); |
424163ea DJ |
2395 | } |
2396 | ||
58a5184e | 2397 | /* This implements a basic search of memory, reading target memory and |
08388c79 DE |
2398 | performing the search here (as opposed to performing the search in on the |
2399 | target side with, for example, gdbserver). */ | |
2400 | ||
2401 | int | |
2402 | simple_search_memory (struct target_ops *ops, | |
2403 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2404 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2405 | CORE_ADDR *found_addrp) | |
2406 | { | |
2407 | /* NOTE: also defined in find.c testcase. */ | |
2408 | #define SEARCH_CHUNK_SIZE 16000 | |
2409 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
2410 | /* Buffer to hold memory contents for searching. */ | |
08388c79 | 2411 | unsigned search_buf_size; |
08388c79 DE |
2412 | |
2413 | search_buf_size = chunk_size + pattern_len - 1; | |
2414 | ||
2415 | /* No point in trying to allocate a buffer larger than the search space. */ | |
2416 | if (search_space_len < search_buf_size) | |
2417 | search_buf_size = search_space_len; | |
2418 | ||
26fcd5d7 | 2419 | gdb::byte_vector search_buf (search_buf_size); |
08388c79 DE |
2420 | |
2421 | /* Prime the search buffer. */ | |
2422 | ||
2423 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
26fcd5d7 TT |
2424 | search_buf.data (), start_addr, search_buf_size) |
2425 | != search_buf_size) | |
08388c79 | 2426 | { |
b3dc46ff AB |
2427 | warning (_("Unable to access %s bytes of target " |
2428 | "memory at %s, halting search."), | |
2429 | pulongest (search_buf_size), hex_string (start_addr)); | |
08388c79 DE |
2430 | return -1; |
2431 | } | |
2432 | ||
2433 | /* Perform the search. | |
2434 | ||
2435 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
2436 | When we've scanned N bytes we copy the trailing bytes to the start and | |
2437 | read in another N bytes. */ | |
2438 | ||
2439 | while (search_space_len >= pattern_len) | |
2440 | { | |
2441 | gdb_byte *found_ptr; | |
325fac50 PA |
2442 | unsigned nr_search_bytes |
2443 | = std::min (search_space_len, (ULONGEST) search_buf_size); | |
08388c79 | 2444 | |
26fcd5d7 | 2445 | found_ptr = (gdb_byte *) memmem (search_buf.data (), nr_search_bytes, |
d7f3ff3e | 2446 | pattern, pattern_len); |
08388c79 DE |
2447 | |
2448 | if (found_ptr != NULL) | |
2449 | { | |
26fcd5d7 | 2450 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf.data ()); |
5d502164 | 2451 | |
08388c79 | 2452 | *found_addrp = found_addr; |
08388c79 DE |
2453 | return 1; |
2454 | } | |
2455 | ||
2456 | /* Not found in this chunk, skip to next chunk. */ | |
2457 | ||
2458 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
2459 | if (search_space_len >= chunk_size) | |
2460 | search_space_len -= chunk_size; | |
2461 | else | |
2462 | search_space_len = 0; | |
2463 | ||
2464 | if (search_space_len >= pattern_len) | |
2465 | { | |
2466 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 2467 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
2468 | int nr_to_read; |
2469 | ||
2470 | /* Copy the trailing part of the previous iteration to the front | |
2471 | of the buffer for the next iteration. */ | |
2472 | gdb_assert (keep_len == pattern_len - 1); | |
26fcd5d7 | 2473 | memcpy (&search_buf[0], &search_buf[chunk_size], keep_len); |
08388c79 | 2474 | |
325fac50 PA |
2475 | nr_to_read = std::min (search_space_len - keep_len, |
2476 | (ULONGEST) chunk_size); | |
08388c79 DE |
2477 | |
2478 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
26fcd5d7 | 2479 | &search_buf[keep_len], read_addr, |
08388c79 DE |
2480 | nr_to_read) != nr_to_read) |
2481 | { | |
b3dc46ff | 2482 | warning (_("Unable to access %s bytes of target " |
9b20d036 | 2483 | "memory at %s, halting search."), |
b3dc46ff | 2484 | plongest (nr_to_read), |
08388c79 | 2485 | hex_string (read_addr)); |
08388c79 DE |
2486 | return -1; |
2487 | } | |
2488 | ||
2489 | start_addr += chunk_size; | |
2490 | } | |
2491 | } | |
2492 | ||
2493 | /* Not found. */ | |
2494 | ||
08388c79 DE |
2495 | return 0; |
2496 | } | |
2497 | ||
58a5184e TT |
2498 | /* Default implementation of memory-searching. */ |
2499 | ||
2500 | static int | |
2501 | default_search_memory (struct target_ops *self, | |
2502 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2503 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2504 | CORE_ADDR *found_addrp) | |
2505 | { | |
2506 | /* Start over from the top of the target stack. */ | |
2507 | return simple_search_memory (current_target.beneath, | |
2508 | start_addr, search_space_len, | |
2509 | pattern, pattern_len, found_addrp); | |
2510 | } | |
2511 | ||
08388c79 DE |
2512 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the |
2513 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2514 | ||
2515 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2516 | requiring halting of the search (e.g. memory read error). | |
2517 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2518 | ||
2519 | int | |
2520 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2521 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2522 | CORE_ADDR *found_addrp) | |
2523 | { | |
a7068b60 TT |
2524 | return current_target.to_search_memory (¤t_target, start_addr, |
2525 | search_space_len, | |
2526 | pattern, pattern_len, found_addrp); | |
08388c79 DE |
2527 | } |
2528 | ||
8edfe269 DJ |
2529 | /* Look through the currently pushed targets. If none of them will |
2530 | be able to restart the currently running process, issue an error | |
2531 | message. */ | |
2532 | ||
2533 | void | |
2534 | target_require_runnable (void) | |
2535 | { | |
2536 | struct target_ops *t; | |
2537 | ||
2538 | for (t = target_stack; t != NULL; t = t->beneath) | |
2539 | { | |
2540 | /* If this target knows how to create a new program, then | |
2541 | assume we will still be able to after killing the current | |
2542 | one. Either killing and mourning will not pop T, or else | |
2543 | find_default_run_target will find it again. */ | |
2544 | if (t->to_create_inferior != NULL) | |
2545 | return; | |
2546 | ||
548740d6 | 2547 | /* Do not worry about targets at certain strata that can not |
8edfe269 DJ |
2548 | create inferiors. Assume they will be pushed again if |
2549 | necessary, and continue to the process_stratum. */ | |
85e747d2 | 2550 | if (t->to_stratum == thread_stratum |
548740d6 | 2551 | || t->to_stratum == record_stratum |
85e747d2 | 2552 | || t->to_stratum == arch_stratum) |
8edfe269 DJ |
2553 | continue; |
2554 | ||
3e43a32a MS |
2555 | error (_("The \"%s\" target does not support \"run\". " |
2556 | "Try \"help target\" or \"continue\"."), | |
8edfe269 DJ |
2557 | t->to_shortname); |
2558 | } | |
2559 | ||
2560 | /* This function is only called if the target is running. In that | |
2561 | case there should have been a process_stratum target and it | |
c378eb4e | 2562 | should either know how to create inferiors, or not... */ |
9b20d036 | 2563 | internal_error (__FILE__, __LINE__, _("No targets found")); |
8edfe269 DJ |
2564 | } |
2565 | ||
6a3cb8e8 PA |
2566 | /* Whether GDB is allowed to fall back to the default run target for |
2567 | "run", "attach", etc. when no target is connected yet. */ | |
2568 | static int auto_connect_native_target = 1; | |
2569 | ||
2570 | static void | |
2571 | show_auto_connect_native_target (struct ui_file *file, int from_tty, | |
2572 | struct cmd_list_element *c, const char *value) | |
2573 | { | |
2574 | fprintf_filtered (file, | |
2575 | _("Whether GDB may automatically connect to the " | |
2576 | "native target is %s.\n"), | |
2577 | value); | |
2578 | } | |
2579 | ||
c906108c SS |
2580 | /* Look through the list of possible targets for a target that can |
2581 | execute a run or attach command without any other data. This is | |
2582 | used to locate the default process stratum. | |
2583 | ||
5f667f2d PA |
2584 | If DO_MESG is not NULL, the result is always valid (error() is |
2585 | called for errors); else, return NULL on error. */ | |
c906108c SS |
2586 | |
2587 | static struct target_ops * | |
a121b7c1 | 2588 | find_default_run_target (const char *do_mesg) |
c906108c | 2589 | { |
c906108c | 2590 | struct target_ops *runable = NULL; |
c906108c | 2591 | |
6a3cb8e8 | 2592 | if (auto_connect_native_target) |
c906108c | 2593 | { |
89a1c21a | 2594 | struct target_ops *t; |
6a3cb8e8 | 2595 | int count = 0; |
89a1c21a | 2596 | int i; |
6a3cb8e8 | 2597 | |
89a1c21a | 2598 | for (i = 0; VEC_iterate (target_ops_p, target_structs, i, t); ++i) |
c906108c | 2599 | { |
89a1c21a | 2600 | if (t->to_can_run != delegate_can_run && target_can_run (t)) |
6a3cb8e8 | 2601 | { |
89a1c21a | 2602 | runable = t; |
6a3cb8e8 PA |
2603 | ++count; |
2604 | } | |
c906108c | 2605 | } |
6a3cb8e8 PA |
2606 | |
2607 | if (count != 1) | |
2608 | runable = NULL; | |
c906108c SS |
2609 | } |
2610 | ||
6a3cb8e8 | 2611 | if (runable == NULL) |
5f667f2d PA |
2612 | { |
2613 | if (do_mesg) | |
2614 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
2615 | else | |
2616 | return NULL; | |
2617 | } | |
c906108c SS |
2618 | |
2619 | return runable; | |
2620 | } | |
2621 | ||
b3ccfe11 | 2622 | /* See target.h. */ |
c906108c | 2623 | |
b3ccfe11 TT |
2624 | struct target_ops * |
2625 | find_attach_target (void) | |
c906108c SS |
2626 | { |
2627 | struct target_ops *t; | |
2628 | ||
b3ccfe11 TT |
2629 | /* If a target on the current stack can attach, use it. */ |
2630 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2631 | { | |
2632 | if (t->to_attach != NULL) | |
2633 | break; | |
2634 | } | |
c906108c | 2635 | |
b3ccfe11 TT |
2636 | /* Otherwise, use the default run target for attaching. */ |
2637 | if (t == NULL) | |
2638 | t = find_default_run_target ("attach"); | |
b84876c2 | 2639 | |
b3ccfe11 | 2640 | return t; |
b84876c2 PA |
2641 | } |
2642 | ||
b3ccfe11 | 2643 | /* See target.h. */ |
b84876c2 | 2644 | |
b3ccfe11 TT |
2645 | struct target_ops * |
2646 | find_run_target (void) | |
9908b566 VP |
2647 | { |
2648 | struct target_ops *t; | |
2649 | ||
b3ccfe11 TT |
2650 | /* If a target on the current stack can attach, use it. */ |
2651 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2652 | { | |
2653 | if (t->to_create_inferior != NULL) | |
2654 | break; | |
2655 | } | |
5d502164 | 2656 | |
b3ccfe11 TT |
2657 | /* Otherwise, use the default run target. */ |
2658 | if (t == NULL) | |
2659 | t = find_default_run_target ("run"); | |
9908b566 | 2660 | |
b3ccfe11 | 2661 | return t; |
9908b566 VP |
2662 | } |
2663 | ||
145b16a9 UW |
2664 | /* Implement the "info proc" command. */ |
2665 | ||
451b7c33 | 2666 | int |
7bc112c1 | 2667 | target_info_proc (const char *args, enum info_proc_what what) |
145b16a9 UW |
2668 | { |
2669 | struct target_ops *t; | |
2670 | ||
2671 | /* If we're already connected to something that can get us OS | |
2672 | related data, use it. Otherwise, try using the native | |
2673 | target. */ | |
2674 | if (current_target.to_stratum >= process_stratum) | |
2675 | t = current_target.beneath; | |
2676 | else | |
2677 | t = find_default_run_target (NULL); | |
2678 | ||
2679 | for (; t != NULL; t = t->beneath) | |
2680 | { | |
2681 | if (t->to_info_proc != NULL) | |
2682 | { | |
2683 | t->to_info_proc (t, args, what); | |
2684 | ||
2685 | if (targetdebug) | |
2686 | fprintf_unfiltered (gdb_stdlog, | |
2687 | "target_info_proc (\"%s\", %d)\n", args, what); | |
2688 | ||
451b7c33 | 2689 | return 1; |
145b16a9 UW |
2690 | } |
2691 | } | |
2692 | ||
451b7c33 | 2693 | return 0; |
145b16a9 UW |
2694 | } |
2695 | ||
03583c20 | 2696 | static int |
2bfc0540 | 2697 | find_default_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
2698 | { |
2699 | struct target_ops *t; | |
2700 | ||
2701 | t = find_default_run_target (NULL); | |
2702 | if (t && t->to_supports_disable_randomization) | |
2bfc0540 | 2703 | return (t->to_supports_disable_randomization) (t); |
03583c20 UW |
2704 | return 0; |
2705 | } | |
2706 | ||
2707 | int | |
2708 | target_supports_disable_randomization (void) | |
2709 | { | |
2710 | struct target_ops *t; | |
2711 | ||
2712 | for (t = ¤t_target; t != NULL; t = t->beneath) | |
2713 | if (t->to_supports_disable_randomization) | |
2bfc0540 | 2714 | return t->to_supports_disable_randomization (t); |
03583c20 UW |
2715 | |
2716 | return 0; | |
2717 | } | |
9908b566 | 2718 | |
1fb77080 SDJ |
2719 | /* See target/target.h. */ |
2720 | ||
2721 | int | |
2722 | target_supports_multi_process (void) | |
2723 | { | |
2724 | return (*current_target.to_supports_multi_process) (¤t_target); | |
2725 | } | |
2726 | ||
b7b030ad TT |
2727 | /* See target.h. */ |
2728 | ||
9018be22 | 2729 | gdb::optional<gdb::char_vector> |
07e059b5 VP |
2730 | target_get_osdata (const char *type) |
2731 | { | |
07e059b5 VP |
2732 | struct target_ops *t; |
2733 | ||
739ef7fb PA |
2734 | /* If we're already connected to something that can get us OS |
2735 | related data, use it. Otherwise, try using the native | |
2736 | target. */ | |
2737 | if (current_target.to_stratum >= process_stratum) | |
6d097e65 | 2738 | t = current_target.beneath; |
739ef7fb PA |
2739 | else |
2740 | t = find_default_run_target ("get OS data"); | |
07e059b5 VP |
2741 | |
2742 | if (!t) | |
9018be22 | 2743 | return {}; |
07e059b5 | 2744 | |
6d097e65 | 2745 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
2746 | } |
2747 | ||
8eaff7cd TT |
2748 | static struct address_space * |
2749 | default_thread_address_space (struct target_ops *self, ptid_t ptid) | |
6c95b8df PA |
2750 | { |
2751 | struct inferior *inf; | |
6c95b8df PA |
2752 | |
2753 | /* Fall-back to the "main" address space of the inferior. */ | |
c9657e70 | 2754 | inf = find_inferior_ptid (ptid); |
6c95b8df PA |
2755 | |
2756 | if (inf == NULL || inf->aspace == NULL) | |
3e43a32a | 2757 | internal_error (__FILE__, __LINE__, |
9b20d036 MS |
2758 | _("Can't determine the current " |
2759 | "address space of thread %s\n"), | |
6c95b8df PA |
2760 | target_pid_to_str (ptid)); |
2761 | ||
2762 | return inf->aspace; | |
2763 | } | |
2764 | ||
8eaff7cd TT |
2765 | /* Determine the current address space of thread PTID. */ |
2766 | ||
2767 | struct address_space * | |
2768 | target_thread_address_space (ptid_t ptid) | |
2769 | { | |
2770 | struct address_space *aspace; | |
2771 | ||
2772 | aspace = current_target.to_thread_address_space (¤t_target, ptid); | |
2773 | gdb_assert (aspace != NULL); | |
2774 | ||
8eaff7cd TT |
2775 | return aspace; |
2776 | } | |
2777 | ||
7313baad UW |
2778 | |
2779 | /* Target file operations. */ | |
2780 | ||
2781 | static struct target_ops * | |
2782 | default_fileio_target (void) | |
2783 | { | |
2784 | /* If we're already connected to something that can perform | |
2785 | file I/O, use it. Otherwise, try using the native target. */ | |
2786 | if (current_target.to_stratum >= process_stratum) | |
2787 | return current_target.beneath; | |
2788 | else | |
2789 | return find_default_run_target ("file I/O"); | |
2790 | } | |
2791 | ||
1c4b552b GB |
2792 | /* File handle for target file operations. */ |
2793 | ||
5ff79300 | 2794 | struct fileio_fh_t |
1c4b552b | 2795 | { |
20db9c52 PA |
2796 | /* The target on which this file is open. NULL if the target is |
2797 | meanwhile closed while the handle is open. */ | |
5ff79300 | 2798 | target_ops *target; |
1c4b552b GB |
2799 | |
2800 | /* The file descriptor on the target. */ | |
5ff79300 | 2801 | int target_fd; |
1c4b552b | 2802 | |
5ff79300 PA |
2803 | /* Check whether this fileio_fh_t represents a closed file. */ |
2804 | bool is_closed () | |
2805 | { | |
2806 | return target_fd < 0; | |
2807 | } | |
2808 | }; | |
1c4b552b GB |
2809 | |
2810 | /* Vector of currently open file handles. The value returned by | |
2811 | target_fileio_open and passed as the FD argument to other | |
2812 | target_fileio_* functions is an index into this vector. This | |
2813 | vector's entries are never freed; instead, files are marked as | |
2814 | closed, and the handle becomes available for reuse. */ | |
5ff79300 | 2815 | static std::vector<fileio_fh_t> fileio_fhandles; |
1c4b552b GB |
2816 | |
2817 | /* Index into fileio_fhandles of the lowest handle that might be | |
2818 | closed. This permits handle reuse without searching the whole | |
2819 | list each time a new file is opened. */ | |
2820 | static int lowest_closed_fd; | |
2821 | ||
20db9c52 PA |
2822 | /* Invalidate the target associated with open handles that were open |
2823 | on target TARG, since we're about to close (and maybe destroy) the | |
2824 | target. The handles remain open from the client's perspective, but | |
2825 | trying to do anything with them other than closing them will fail | |
2826 | with EIO. */ | |
2827 | ||
2828 | static void | |
2829 | fileio_handles_invalidate_target (target_ops *targ) | |
2830 | { | |
2831 | for (fileio_fh_t &fh : fileio_fhandles) | |
2832 | if (fh.target == targ) | |
2833 | fh.target = NULL; | |
2834 | } | |
2835 | ||
1c4b552b GB |
2836 | /* Acquire a target fileio file descriptor. */ |
2837 | ||
2838 | static int | |
5ff79300 | 2839 | acquire_fileio_fd (target_ops *target, int target_fd) |
1c4b552b | 2840 | { |
1c4b552b | 2841 | /* Search for closed handles to reuse. */ |
5ff79300 PA |
2842 | for (; lowest_closed_fd < fileio_fhandles.size (); lowest_closed_fd++) |
2843 | { | |
2844 | fileio_fh_t &fh = fileio_fhandles[lowest_closed_fd]; | |
2845 | ||
2846 | if (fh.is_closed ()) | |
2847 | break; | |
2848 | } | |
1c4b552b GB |
2849 | |
2850 | /* Push a new handle if no closed handles were found. */ | |
5ff79300 PA |
2851 | if (lowest_closed_fd == fileio_fhandles.size ()) |
2852 | fileio_fhandles.push_back (fileio_fh_t {target, target_fd}); | |
2853 | else | |
2854 | fileio_fhandles[lowest_closed_fd] = {target, target_fd}; | |
1c4b552b | 2855 | |
5ff79300 PA |
2856 | /* Should no longer be marked closed. */ |
2857 | gdb_assert (!fileio_fhandles[lowest_closed_fd].is_closed ()); | |
1c4b552b GB |
2858 | |
2859 | /* Return its index, and start the next lookup at | |
2860 | the next index. */ | |
2861 | return lowest_closed_fd++; | |
2862 | } | |
2863 | ||
2864 | /* Release a target fileio file descriptor. */ | |
2865 | ||
2866 | static void | |
2867 | release_fileio_fd (int fd, fileio_fh_t *fh) | |
2868 | { | |
5ff79300 | 2869 | fh->target_fd = -1; |
325fac50 | 2870 | lowest_closed_fd = std::min (lowest_closed_fd, fd); |
1c4b552b GB |
2871 | } |
2872 | ||
2873 | /* Return a pointer to the fileio_fhandle_t corresponding to FD. */ | |
2874 | ||
5ff79300 PA |
2875 | static fileio_fh_t * |
2876 | fileio_fd_to_fh (int fd) | |
2877 | { | |
2878 | return &fileio_fhandles[fd]; | |
2879 | } | |
1c4b552b | 2880 | |
4313b8c0 GB |
2881 | /* Helper for target_fileio_open and |
2882 | target_fileio_open_warn_if_slow. */ | |
12e2a5fd | 2883 | |
4313b8c0 GB |
2884 | static int |
2885 | target_fileio_open_1 (struct inferior *inf, const char *filename, | |
2886 | int flags, int mode, int warn_if_slow, | |
2887 | int *target_errno) | |
7313baad UW |
2888 | { |
2889 | struct target_ops *t; | |
2890 | ||
2891 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2892 | { | |
2893 | if (t->to_fileio_open != NULL) | |
2894 | { | |
07c138c8 | 2895 | int fd = t->to_fileio_open (t, inf, filename, flags, mode, |
4313b8c0 | 2896 | warn_if_slow, target_errno); |
7313baad | 2897 | |
1c4b552b GB |
2898 | if (fd < 0) |
2899 | fd = -1; | |
2900 | else | |
2901 | fd = acquire_fileio_fd (t, fd); | |
2902 | ||
7313baad UW |
2903 | if (targetdebug) |
2904 | fprintf_unfiltered (gdb_stdlog, | |
4313b8c0 | 2905 | "target_fileio_open (%d,%s,0x%x,0%o,%d)" |
07c138c8 GB |
2906 | " = %d (%d)\n", |
2907 | inf == NULL ? 0 : inf->num, | |
7313baad | 2908 | filename, flags, mode, |
4313b8c0 GB |
2909 | warn_if_slow, fd, |
2910 | fd != -1 ? 0 : *target_errno); | |
7313baad UW |
2911 | return fd; |
2912 | } | |
2913 | } | |
2914 | ||
2915 | *target_errno = FILEIO_ENOSYS; | |
2916 | return -1; | |
2917 | } | |
2918 | ||
12e2a5fd GB |
2919 | /* See target.h. */ |
2920 | ||
4313b8c0 GB |
2921 | int |
2922 | target_fileio_open (struct inferior *inf, const char *filename, | |
2923 | int flags, int mode, int *target_errno) | |
2924 | { | |
2925 | return target_fileio_open_1 (inf, filename, flags, mode, 0, | |
2926 | target_errno); | |
2927 | } | |
2928 | ||
2929 | /* See target.h. */ | |
2930 | ||
2931 | int | |
2932 | target_fileio_open_warn_if_slow (struct inferior *inf, | |
2933 | const char *filename, | |
2934 | int flags, int mode, int *target_errno) | |
2935 | { | |
2936 | return target_fileio_open_1 (inf, filename, flags, mode, 1, | |
2937 | target_errno); | |
2938 | } | |
2939 | ||
2940 | /* See target.h. */ | |
2941 | ||
7313baad UW |
2942 | int |
2943 | target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
2944 | ULONGEST offset, int *target_errno) | |
2945 | { | |
1c4b552b GB |
2946 | fileio_fh_t *fh = fileio_fd_to_fh (fd); |
2947 | int ret = -1; | |
7313baad | 2948 | |
5ff79300 | 2949 | if (fh->is_closed ()) |
1c4b552b | 2950 | *target_errno = EBADF; |
20db9c52 PA |
2951 | else if (fh->target == NULL) |
2952 | *target_errno = EIO; | |
1c4b552b | 2953 | else |
5ff79300 PA |
2954 | ret = fh->target->to_fileio_pwrite (fh->target, fh->target_fd, write_buf, |
2955 | len, offset, target_errno); | |
7313baad | 2956 | |
1c4b552b GB |
2957 | if (targetdebug) |
2958 | fprintf_unfiltered (gdb_stdlog, | |
2959 | "target_fileio_pwrite (%d,...,%d,%s) " | |
2960 | "= %d (%d)\n", | |
2961 | fd, len, pulongest (offset), | |
2962 | ret, ret != -1 ? 0 : *target_errno); | |
2963 | return ret; | |
7313baad UW |
2964 | } |
2965 | ||
12e2a5fd GB |
2966 | /* See target.h. */ |
2967 | ||
7313baad UW |
2968 | int |
2969 | target_fileio_pread (int fd, gdb_byte *read_buf, int len, | |
2970 | ULONGEST offset, int *target_errno) | |
2971 | { | |
1c4b552b GB |
2972 | fileio_fh_t *fh = fileio_fd_to_fh (fd); |
2973 | int ret = -1; | |
7313baad | 2974 | |
5ff79300 | 2975 | if (fh->is_closed ()) |
1c4b552b | 2976 | *target_errno = EBADF; |
20db9c52 PA |
2977 | else if (fh->target == NULL) |
2978 | *target_errno = EIO; | |
1c4b552b | 2979 | else |
5ff79300 PA |
2980 | ret = fh->target->to_fileio_pread (fh->target, fh->target_fd, read_buf, |
2981 | len, offset, target_errno); | |
7313baad | 2982 | |
1c4b552b GB |
2983 | if (targetdebug) |
2984 | fprintf_unfiltered (gdb_stdlog, | |
2985 | "target_fileio_pread (%d,...,%d,%s) " | |
2986 | "= %d (%d)\n", | |
2987 | fd, len, pulongest (offset), | |
2988 | ret, ret != -1 ? 0 : *target_errno); | |
9b15c1f0 GB |
2989 | return ret; |
2990 | } | |
2991 | ||
2992 | /* See target.h. */ | |
12e2a5fd | 2993 | |
9b15c1f0 GB |
2994 | int |
2995 | target_fileio_fstat (int fd, struct stat *sb, int *target_errno) | |
2996 | { | |
2997 | fileio_fh_t *fh = fileio_fd_to_fh (fd); | |
2998 | int ret = -1; | |
2999 | ||
5ff79300 | 3000 | if (fh->is_closed ()) |
9b15c1f0 | 3001 | *target_errno = EBADF; |
20db9c52 PA |
3002 | else if (fh->target == NULL) |
3003 | *target_errno = EIO; | |
9b15c1f0 | 3004 | else |
5ff79300 PA |
3005 | ret = fh->target->to_fileio_fstat (fh->target, fh->target_fd, |
3006 | sb, target_errno); | |
9b15c1f0 GB |
3007 | |
3008 | if (targetdebug) | |
3009 | fprintf_unfiltered (gdb_stdlog, | |
3010 | "target_fileio_fstat (%d) = %d (%d)\n", | |
3011 | fd, ret, ret != -1 ? 0 : *target_errno); | |
1c4b552b | 3012 | return ret; |
7313baad UW |
3013 | } |
3014 | ||
12e2a5fd GB |
3015 | /* See target.h. */ |
3016 | ||
7313baad UW |
3017 | int |
3018 | target_fileio_close (int fd, int *target_errno) | |
3019 | { | |
1c4b552b GB |
3020 | fileio_fh_t *fh = fileio_fd_to_fh (fd); |
3021 | int ret = -1; | |
7313baad | 3022 | |
5ff79300 | 3023 | if (fh->is_closed ()) |
1c4b552b GB |
3024 | *target_errno = EBADF; |
3025 | else | |
7313baad | 3026 | { |
20db9c52 PA |
3027 | if (fh->target != NULL) |
3028 | ret = fh->target->to_fileio_close (fh->target, fh->target_fd, | |
3029 | target_errno); | |
3030 | else | |
3031 | ret = 0; | |
1c4b552b | 3032 | release_fileio_fd (fd, fh); |
7313baad UW |
3033 | } |
3034 | ||
1c4b552b GB |
3035 | if (targetdebug) |
3036 | fprintf_unfiltered (gdb_stdlog, | |
3037 | "target_fileio_close (%d) = %d (%d)\n", | |
3038 | fd, ret, ret != -1 ? 0 : *target_errno); | |
3039 | return ret; | |
7313baad UW |
3040 | } |
3041 | ||
12e2a5fd GB |
3042 | /* See target.h. */ |
3043 | ||
7313baad | 3044 | int |
07c138c8 GB |
3045 | target_fileio_unlink (struct inferior *inf, const char *filename, |
3046 | int *target_errno) | |
7313baad UW |
3047 | { |
3048 | struct target_ops *t; | |
3049 | ||
3050 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3051 | { | |
3052 | if (t->to_fileio_unlink != NULL) | |
3053 | { | |
07c138c8 GB |
3054 | int ret = t->to_fileio_unlink (t, inf, filename, |
3055 | target_errno); | |
7313baad UW |
3056 | |
3057 | if (targetdebug) | |
3058 | fprintf_unfiltered (gdb_stdlog, | |
07c138c8 GB |
3059 | "target_fileio_unlink (%d,%s)" |
3060 | " = %d (%d)\n", | |
3061 | inf == NULL ? 0 : inf->num, filename, | |
3062 | ret, ret != -1 ? 0 : *target_errno); | |
7313baad UW |
3063 | return ret; |
3064 | } | |
3065 | } | |
3066 | ||
3067 | *target_errno = FILEIO_ENOSYS; | |
3068 | return -1; | |
3069 | } | |
3070 | ||
12e2a5fd GB |
3071 | /* See target.h. */ |
3072 | ||
e0d3522b | 3073 | gdb::optional<std::string> |
07c138c8 GB |
3074 | target_fileio_readlink (struct inferior *inf, const char *filename, |
3075 | int *target_errno) | |
b9e7b9c3 UW |
3076 | { |
3077 | struct target_ops *t; | |
3078 | ||
3079 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3080 | { | |
3081 | if (t->to_fileio_readlink != NULL) | |
3082 | { | |
e0d3522b TT |
3083 | gdb::optional<std::string> ret |
3084 | = t->to_fileio_readlink (t, inf, filename, target_errno); | |
b9e7b9c3 UW |
3085 | |
3086 | if (targetdebug) | |
3087 | fprintf_unfiltered (gdb_stdlog, | |
07c138c8 GB |
3088 | "target_fileio_readlink (%d,%s)" |
3089 | " = %s (%d)\n", | |
3090 | inf == NULL ? 0 : inf->num, | |
e0d3522b TT |
3091 | filename, ret ? ret->c_str () : "(nil)", |
3092 | ret ? 0 : *target_errno); | |
b9e7b9c3 UW |
3093 | return ret; |
3094 | } | |
3095 | } | |
3096 | ||
3097 | *target_errno = FILEIO_ENOSYS; | |
e0d3522b | 3098 | return {}; |
b9e7b9c3 UW |
3099 | } |
3100 | ||
770623f7 TT |
3101 | /* Like scoped_fd, but specific to target fileio. */ |
3102 | ||
3103 | class scoped_target_fd | |
7313baad | 3104 | { |
770623f7 TT |
3105 | public: |
3106 | explicit scoped_target_fd (int fd) noexcept | |
3107 | : m_fd (fd) | |
3108 | { | |
3109 | } | |
7313baad | 3110 | |
770623f7 TT |
3111 | ~scoped_target_fd () |
3112 | { | |
3113 | if (m_fd >= 0) | |
3114 | { | |
3115 | int target_errno; | |
3116 | ||
3117 | target_fileio_close (m_fd, &target_errno); | |
3118 | } | |
3119 | } | |
3120 | ||
3121 | DISABLE_COPY_AND_ASSIGN (scoped_target_fd); | |
3122 | ||
3123 | int get () const noexcept | |
3124 | { | |
3125 | return m_fd; | |
3126 | } | |
3127 | ||
3128 | private: | |
3129 | int m_fd; | |
3130 | }; | |
7313baad | 3131 | |
07c138c8 GB |
3132 | /* Read target file FILENAME, in the filesystem as seen by INF. If |
3133 | INF is NULL, use the filesystem seen by the debugger (GDB or, for | |
3134 | remote targets, the remote stub). Store the result in *BUF_P and | |
3135 | return the size of the transferred data. PADDING additional bytes | |
3136 | are available in *BUF_P. This is a helper function for | |
3137 | target_fileio_read_alloc; see the declaration of that function for | |
3138 | more information. */ | |
7313baad | 3139 | |
f7af1fcd JK |
3140 | static LONGEST |
3141 | target_fileio_read_alloc_1 (struct inferior *inf, const char *filename, | |
3142 | gdb_byte **buf_p, int padding) | |
3143 | { | |
db1ff28b JK |
3144 | size_t buf_alloc, buf_pos; |
3145 | gdb_byte *buf; | |
3146 | LONGEST n; | |
db1ff28b | 3147 | int target_errno; |
f7af1fcd | 3148 | |
770623f7 TT |
3149 | scoped_target_fd fd (target_fileio_open (inf, filename, FILEIO_O_RDONLY, |
3150 | 0700, &target_errno)); | |
3151 | if (fd.get () == -1) | |
f7af1fcd JK |
3152 | return -1; |
3153 | ||
db1ff28b JK |
3154 | /* Start by reading up to 4K at a time. The target will throttle |
3155 | this number down if necessary. */ | |
3156 | buf_alloc = 4096; | |
224c3ddb | 3157 | buf = (gdb_byte *) xmalloc (buf_alloc); |
db1ff28b JK |
3158 | buf_pos = 0; |
3159 | while (1) | |
3160 | { | |
770623f7 | 3161 | n = target_fileio_pread (fd.get (), &buf[buf_pos], |
db1ff28b JK |
3162 | buf_alloc - buf_pos - padding, buf_pos, |
3163 | &target_errno); | |
3164 | if (n < 0) | |
3165 | { | |
3166 | /* An error occurred. */ | |
db1ff28b JK |
3167 | xfree (buf); |
3168 | return -1; | |
3169 | } | |
3170 | else if (n == 0) | |
3171 | { | |
3172 | /* Read all there was. */ | |
db1ff28b JK |
3173 | if (buf_pos == 0) |
3174 | xfree (buf); | |
3175 | else | |
3176 | *buf_p = buf; | |
3177 | return buf_pos; | |
3178 | } | |
3179 | ||
3180 | buf_pos += n; | |
3181 | ||
3182 | /* If the buffer is filling up, expand it. */ | |
3183 | if (buf_alloc < buf_pos * 2) | |
3184 | { | |
3185 | buf_alloc *= 2; | |
224c3ddb | 3186 | buf = (gdb_byte *) xrealloc (buf, buf_alloc); |
db1ff28b JK |
3187 | } |
3188 | ||
3189 | QUIT; | |
3190 | } | |
f7af1fcd JK |
3191 | } |
3192 | ||
12e2a5fd | 3193 | /* See target.h. */ |
7313baad UW |
3194 | |
3195 | LONGEST | |
07c138c8 GB |
3196 | target_fileio_read_alloc (struct inferior *inf, const char *filename, |
3197 | gdb_byte **buf_p) | |
7313baad | 3198 | { |
07c138c8 | 3199 | return target_fileio_read_alloc_1 (inf, filename, buf_p, 0); |
7313baad UW |
3200 | } |
3201 | ||
db1ff28b | 3202 | /* See target.h. */ |
f7af1fcd | 3203 | |
87028b87 | 3204 | gdb::unique_xmalloc_ptr<char> |
f7af1fcd JK |
3205 | target_fileio_read_stralloc (struct inferior *inf, const char *filename) |
3206 | { | |
db1ff28b JK |
3207 | gdb_byte *buffer; |
3208 | char *bufstr; | |
3209 | LONGEST i, transferred; | |
3210 | ||
3211 | transferred = target_fileio_read_alloc_1 (inf, filename, &buffer, 1); | |
3212 | bufstr = (char *) buffer; | |
3213 | ||
3214 | if (transferred < 0) | |
87028b87 | 3215 | return gdb::unique_xmalloc_ptr<char> (nullptr); |
db1ff28b JK |
3216 | |
3217 | if (transferred == 0) | |
87028b87 | 3218 | return gdb::unique_xmalloc_ptr<char> (xstrdup ("")); |
db1ff28b JK |
3219 | |
3220 | bufstr[transferred] = 0; | |
3221 | ||
3222 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
3223 | for (i = strlen (bufstr); i < transferred; i++) | |
3224 | if (bufstr[i] != 0) | |
3225 | { | |
3226 | warning (_("target file %s " | |
3227 | "contained unexpected null characters"), | |
3228 | filename); | |
3229 | break; | |
3230 | } | |
3231 | ||
87028b87 | 3232 | return gdb::unique_xmalloc_ptr<char> (bufstr); |
f7af1fcd | 3233 | } |
7313baad | 3234 | |
db1ff28b | 3235 | |
e0d24f8d | 3236 | static int |
31568a15 TT |
3237 | default_region_ok_for_hw_watchpoint (struct target_ops *self, |
3238 | CORE_ADDR addr, int len) | |
e0d24f8d | 3239 | { |
f5656ead | 3240 | return (len <= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT); |
ccaa32c7 GS |
3241 | } |
3242 | ||
5009afc5 AS |
3243 | static int |
3244 | default_watchpoint_addr_within_range (struct target_ops *target, | |
3245 | CORE_ADDR addr, | |
3246 | CORE_ADDR start, int length) | |
3247 | { | |
3248 | return addr >= start && addr < start + length; | |
3249 | } | |
3250 | ||
c2250ad1 UW |
3251 | static struct gdbarch * |
3252 | default_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
3253 | { | |
5cd63fda PA |
3254 | inferior *inf = find_inferior_ptid (ptid); |
3255 | gdb_assert (inf != NULL); | |
3256 | return inf->gdbarch; | |
c2250ad1 UW |
3257 | } |
3258 | ||
c906108c | 3259 | static int |
555bbdeb TT |
3260 | return_zero (struct target_ops *ignore) |
3261 | { | |
3262 | return 0; | |
3263 | } | |
3264 | ||
3265 | static int | |
3266 | return_zero_has_execution (struct target_ops *ignore, ptid_t ignore2) | |
c906108c SS |
3267 | { |
3268 | return 0; | |
3269 | } | |
3270 | ||
ed9a39eb JM |
3271 | /* |
3272 | * Find the next target down the stack from the specified target. | |
3273 | */ | |
3274 | ||
3275 | struct target_ops * | |
fba45db2 | 3276 | find_target_beneath (struct target_ops *t) |
ed9a39eb | 3277 | { |
258b763a | 3278 | return t->beneath; |
ed9a39eb JM |
3279 | } |
3280 | ||
8b06beed TT |
3281 | /* See target.h. */ |
3282 | ||
3283 | struct target_ops * | |
3284 | find_target_at (enum strata stratum) | |
3285 | { | |
3286 | struct target_ops *t; | |
3287 | ||
3288 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3289 | if (t->to_stratum == stratum) | |
3290 | return t; | |
3291 | ||
3292 | return NULL; | |
3293 | } | |
3294 | ||
c906108c | 3295 | \f |
0f48b757 PA |
3296 | |
3297 | /* See target.h */ | |
3298 | ||
3299 | void | |
3300 | target_announce_detach (int from_tty) | |
3301 | { | |
3302 | pid_t pid; | |
a121b7c1 | 3303 | const char *exec_file; |
0f48b757 PA |
3304 | |
3305 | if (!from_tty) | |
3306 | return; | |
3307 | ||
3308 | exec_file = get_exec_file (0); | |
3309 | if (exec_file == NULL) | |
3310 | exec_file = ""; | |
3311 | ||
3312 | pid = ptid_get_pid (inferior_ptid); | |
3313 | printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file, | |
3314 | target_pid_to_str (pid_to_ptid (pid))); | |
3315 | gdb_flush (gdb_stdout); | |
3316 | } | |
3317 | ||
c906108c SS |
3318 | /* The inferior process has died. Long live the inferior! */ |
3319 | ||
3320 | void | |
fba45db2 | 3321 | generic_mourn_inferior (void) |
c906108c | 3322 | { |
7f9f62ba | 3323 | ptid_t ptid; |
c906108c | 3324 | |
7f9f62ba | 3325 | ptid = inferior_ptid; |
39f77062 | 3326 | inferior_ptid = null_ptid; |
7f9f62ba | 3327 | |
f59f708a PA |
3328 | /* Mark breakpoints uninserted in case something tries to delete a |
3329 | breakpoint while we delete the inferior's threads (which would | |
3330 | fail, since the inferior is long gone). */ | |
3331 | mark_breakpoints_out (); | |
3332 | ||
7f9f62ba PA |
3333 | if (!ptid_equal (ptid, null_ptid)) |
3334 | { | |
3335 | int pid = ptid_get_pid (ptid); | |
6c95b8df | 3336 | exit_inferior (pid); |
7f9f62ba PA |
3337 | } |
3338 | ||
f59f708a PA |
3339 | /* Note this wipes step-resume breakpoints, so needs to be done |
3340 | after exit_inferior, which ends up referencing the step-resume | |
3341 | breakpoints through clear_thread_inferior_resources. */ | |
c906108c | 3342 | breakpoint_init_inferior (inf_exited); |
f59f708a | 3343 | |
c906108c SS |
3344 | registers_changed (); |
3345 | ||
c906108c SS |
3346 | reopen_exec_file (); |
3347 | reinit_frame_cache (); | |
3348 | ||
9a4105ab AC |
3349 | if (deprecated_detach_hook) |
3350 | deprecated_detach_hook (); | |
c906108c SS |
3351 | } |
3352 | \f | |
fd0a2a6f MK |
3353 | /* Convert a normal process ID to a string. Returns the string in a |
3354 | static buffer. */ | |
c906108c | 3355 | |
7a114964 | 3356 | const char * |
39f77062 | 3357 | normal_pid_to_str (ptid_t ptid) |
c906108c | 3358 | { |
fd0a2a6f | 3359 | static char buf[32]; |
c906108c | 3360 | |
5fff8fc0 | 3361 | xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid)); |
c906108c SS |
3362 | return buf; |
3363 | } | |
3364 | ||
7a114964 | 3365 | static const char * |
770234d3 | 3366 | default_pid_to_str (struct target_ops *ops, ptid_t ptid) |
117de6a9 PA |
3367 | { |
3368 | return normal_pid_to_str (ptid); | |
3369 | } | |
3370 | ||
9b4eba8e HZ |
3371 | /* Error-catcher for target_find_memory_regions. */ |
3372 | static int | |
2e73927c TT |
3373 | dummy_find_memory_regions (struct target_ops *self, |
3374 | find_memory_region_ftype ignore1, void *ignore2) | |
be4d1333 | 3375 | { |
9b4eba8e | 3376 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3377 | return 0; |
3378 | } | |
3379 | ||
9b4eba8e HZ |
3380 | /* Error-catcher for target_make_corefile_notes. */ |
3381 | static char * | |
fc6691b2 TT |
3382 | dummy_make_corefile_notes (struct target_ops *self, |
3383 | bfd *ignore1, int *ignore2) | |
be4d1333 | 3384 | { |
9b4eba8e | 3385 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3386 | return NULL; |
3387 | } | |
3388 | ||
c906108c SS |
3389 | /* Set up the handful of non-empty slots needed by the dummy target |
3390 | vector. */ | |
3391 | ||
3392 | static void | |
fba45db2 | 3393 | init_dummy_target (void) |
c906108c SS |
3394 | { |
3395 | dummy_target.to_shortname = "None"; | |
3396 | dummy_target.to_longname = "None"; | |
3397 | dummy_target.to_doc = ""; | |
03583c20 UW |
3398 | dummy_target.to_supports_disable_randomization |
3399 | = find_default_supports_disable_randomization; | |
c906108c | 3400 | dummy_target.to_stratum = dummy_stratum; |
555bbdeb TT |
3401 | dummy_target.to_has_all_memory = return_zero; |
3402 | dummy_target.to_has_memory = return_zero; | |
3403 | dummy_target.to_has_stack = return_zero; | |
3404 | dummy_target.to_has_registers = return_zero; | |
3405 | dummy_target.to_has_execution = return_zero_has_execution; | |
c906108c | 3406 | dummy_target.to_magic = OPS_MAGIC; |
1101cb7b TT |
3407 | |
3408 | install_dummy_methods (&dummy_target); | |
c906108c | 3409 | } |
c906108c | 3410 | \f |
c906108c | 3411 | |
f1c07ab0 | 3412 | void |
460014f5 | 3413 | target_close (struct target_ops *targ) |
f1c07ab0 | 3414 | { |
7fdc1521 TT |
3415 | gdb_assert (!target_is_pushed (targ)); |
3416 | ||
20db9c52 PA |
3417 | fileio_handles_invalidate_target (targ); |
3418 | ||
3fffc070 | 3419 | if (targ->to_close != NULL) |
de90e03d | 3420 | targ->to_close (targ); |
947b8855 PA |
3421 | |
3422 | if (targetdebug) | |
460014f5 | 3423 | fprintf_unfiltered (gdb_stdlog, "target_close ()\n"); |
f1c07ab0 AC |
3424 | } |
3425 | ||
28439f5e PA |
3426 | int |
3427 | target_thread_alive (ptid_t ptid) | |
c906108c | 3428 | { |
a7068b60 | 3429 | return current_target.to_thread_alive (¤t_target, ptid); |
28439f5e PA |
3430 | } |
3431 | ||
3432 | void | |
e8032dde | 3433 | target_update_thread_list (void) |
28439f5e | 3434 | { |
e8032dde | 3435 | current_target.to_update_thread_list (¤t_target); |
c906108c SS |
3436 | } |
3437 | ||
d914c394 SS |
3438 | void |
3439 | target_stop (ptid_t ptid) | |
3440 | { | |
3441 | if (!may_stop) | |
3442 | { | |
3443 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3444 | return; | |
3445 | } | |
3446 | ||
1eab8a48 | 3447 | (*current_target.to_stop) (¤t_target, ptid); |
d914c394 SS |
3448 | } |
3449 | ||
bfedc46a | 3450 | void |
e671cd59 | 3451 | target_interrupt () |
bfedc46a PA |
3452 | { |
3453 | if (!may_stop) | |
3454 | { | |
3455 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3456 | return; | |
3457 | } | |
3458 | ||
e671cd59 | 3459 | (*current_target.to_interrupt) (¤t_target); |
bfedc46a PA |
3460 | } |
3461 | ||
abc56d60 PA |
3462 | /* See target.h. */ |
3463 | ||
93692b58 PA |
3464 | void |
3465 | target_pass_ctrlc (void) | |
3466 | { | |
3467 | (*current_target.to_pass_ctrlc) (¤t_target); | |
3468 | } | |
3469 | ||
3470 | /* See target.h. */ | |
3471 | ||
3472 | void | |
3473 | default_target_pass_ctrlc (struct target_ops *ops) | |
3474 | { | |
e671cd59 | 3475 | target_interrupt (); |
93692b58 PA |
3476 | } |
3477 | ||
f8c1d06b GB |
3478 | /* See target/target.h. */ |
3479 | ||
3480 | void | |
03f4463b | 3481 | target_stop_and_wait (ptid_t ptid) |
f8c1d06b GB |
3482 | { |
3483 | struct target_waitstatus status; | |
3484 | int was_non_stop = non_stop; | |
3485 | ||
3486 | non_stop = 1; | |
3487 | target_stop (ptid); | |
3488 | ||
3489 | memset (&status, 0, sizeof (status)); | |
3490 | target_wait (ptid, &status, 0); | |
3491 | ||
3492 | non_stop = was_non_stop; | |
3493 | } | |
3494 | ||
3495 | /* See target/target.h. */ | |
3496 | ||
3497 | void | |
03f4463b | 3498 | target_continue_no_signal (ptid_t ptid) |
f8c1d06b GB |
3499 | { |
3500 | target_resume (ptid, 0, GDB_SIGNAL_0); | |
3501 | } | |
3502 | ||
049a8570 SDJ |
3503 | /* See target/target.h. */ |
3504 | ||
3505 | void | |
3506 | target_continue (ptid_t ptid, enum gdb_signal signal) | |
3507 | { | |
3508 | target_resume (ptid, 0, signal); | |
3509 | } | |
3510 | ||
09826ec5 PA |
3511 | /* Concatenate ELEM to LIST, a comma separate list, and return the |
3512 | result. The LIST incoming argument is released. */ | |
3513 | ||
3514 | static char * | |
3515 | str_comma_list_concat_elem (char *list, const char *elem) | |
3516 | { | |
3517 | if (list == NULL) | |
3518 | return xstrdup (elem); | |
3519 | else | |
3520 | return reconcat (list, list, ", ", elem, (char *) NULL); | |
3521 | } | |
3522 | ||
3523 | /* Helper for target_options_to_string. If OPT is present in | |
3524 | TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET. | |
3525 | Returns the new resulting string. OPT is removed from | |
3526 | TARGET_OPTIONS. */ | |
3527 | ||
3528 | static char * | |
3529 | do_option (int *target_options, char *ret, | |
a121b7c1 | 3530 | int opt, const char *opt_str) |
09826ec5 PA |
3531 | { |
3532 | if ((*target_options & opt) != 0) | |
3533 | { | |
3534 | ret = str_comma_list_concat_elem (ret, opt_str); | |
3535 | *target_options &= ~opt; | |
3536 | } | |
3537 | ||
3538 | return ret; | |
3539 | } | |
3540 | ||
3541 | char * | |
3542 | target_options_to_string (int target_options) | |
3543 | { | |
3544 | char *ret = NULL; | |
3545 | ||
3546 | #define DO_TARG_OPTION(OPT) \ | |
3547 | ret = do_option (&target_options, ret, OPT, #OPT) | |
3548 | ||
3549 | DO_TARG_OPTION (TARGET_WNOHANG); | |
3550 | ||
3551 | if (target_options != 0) | |
3552 | ret = str_comma_list_concat_elem (ret, "unknown???"); | |
3553 | ||
3554 | if (ret == NULL) | |
3555 | ret = xstrdup (""); | |
3556 | return ret; | |
3557 | } | |
3558 | ||
28439f5e PA |
3559 | void |
3560 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 3561 | { |
ad5989bd TT |
3562 | current_target.to_fetch_registers (¤t_target, regcache, regno); |
3563 | if (targetdebug) | |
ef79d9a3 | 3564 | regcache->debug_print_register ("target_fetch_registers", regno); |
c906108c SS |
3565 | } |
3566 | ||
28439f5e PA |
3567 | void |
3568 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 3569 | { |
d914c394 SS |
3570 | if (!may_write_registers) |
3571 | error (_("Writing to registers is not allowed (regno %d)"), regno); | |
3572 | ||
6b84065d TT |
3573 | current_target.to_store_registers (¤t_target, regcache, regno); |
3574 | if (targetdebug) | |
28439f5e | 3575 | { |
ef79d9a3 | 3576 | regcache->debug_print_register ("target_store_registers", regno); |
28439f5e | 3577 | } |
c906108c SS |
3578 | } |
3579 | ||
dc146f7c VP |
3580 | int |
3581 | target_core_of_thread (ptid_t ptid) | |
3582 | { | |
a7068b60 | 3583 | return current_target.to_core_of_thread (¤t_target, ptid); |
dc146f7c VP |
3584 | } |
3585 | ||
936d2992 PA |
3586 | int |
3587 | simple_verify_memory (struct target_ops *ops, | |
3588 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
3589 | { | |
3590 | LONGEST total_xfered = 0; | |
3591 | ||
3592 | while (total_xfered < size) | |
3593 | { | |
3594 | ULONGEST xfered_len; | |
3595 | enum target_xfer_status status; | |
3596 | gdb_byte buf[1024]; | |
768adc05 | 3597 | ULONGEST howmuch = std::min<ULONGEST> (sizeof (buf), size - total_xfered); |
936d2992 PA |
3598 | |
3599 | status = target_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
3600 | buf, NULL, lma + total_xfered, howmuch, | |
3601 | &xfered_len); | |
3602 | if (status == TARGET_XFER_OK | |
3603 | && memcmp (data + total_xfered, buf, xfered_len) == 0) | |
3604 | { | |
3605 | total_xfered += xfered_len; | |
3606 | QUIT; | |
3607 | } | |
3608 | else | |
3609 | return 0; | |
3610 | } | |
3611 | return 1; | |
3612 | } | |
3613 | ||
3614 | /* Default implementation of memory verification. */ | |
3615 | ||
3616 | static int | |
3617 | default_verify_memory (struct target_ops *self, | |
3618 | const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3619 | { | |
3620 | /* Start over from the top of the target stack. */ | |
3621 | return simple_verify_memory (current_target.beneath, | |
3622 | data, memaddr, size); | |
3623 | } | |
3624 | ||
4a5e7a5b PA |
3625 | int |
3626 | target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3627 | { | |
a7068b60 TT |
3628 | return current_target.to_verify_memory (¤t_target, |
3629 | data, memaddr, size); | |
4a5e7a5b PA |
3630 | } |
3631 | ||
9c06b0b4 TJB |
3632 | /* The documentation for this function is in its prototype declaration in |
3633 | target.h. */ | |
3634 | ||
3635 | int | |
f4b0a671 SM |
3636 | target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, |
3637 | enum target_hw_bp_type rw) | |
9c06b0b4 | 3638 | { |
a7068b60 TT |
3639 | return current_target.to_insert_mask_watchpoint (¤t_target, |
3640 | addr, mask, rw); | |
9c06b0b4 TJB |
3641 | } |
3642 | ||
3643 | /* The documentation for this function is in its prototype declaration in | |
3644 | target.h. */ | |
3645 | ||
3646 | int | |
f4b0a671 SM |
3647 | target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, |
3648 | enum target_hw_bp_type rw) | |
9c06b0b4 | 3649 | { |
a7068b60 TT |
3650 | return current_target.to_remove_mask_watchpoint (¤t_target, |
3651 | addr, mask, rw); | |
9c06b0b4 TJB |
3652 | } |
3653 | ||
3654 | /* The documentation for this function is in its prototype declaration | |
3655 | in target.h. */ | |
3656 | ||
3657 | int | |
3658 | target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask) | |
3659 | { | |
6c7e5e5c TT |
3660 | return current_target.to_masked_watch_num_registers (¤t_target, |
3661 | addr, mask); | |
9c06b0b4 TJB |
3662 | } |
3663 | ||
f1310107 TJB |
3664 | /* The documentation for this function is in its prototype declaration |
3665 | in target.h. */ | |
3666 | ||
3667 | int | |
3668 | target_ranged_break_num_registers (void) | |
3669 | { | |
a134316b | 3670 | return current_target.to_ranged_break_num_registers (¤t_target); |
f1310107 TJB |
3671 | } |
3672 | ||
02d27625 MM |
3673 | /* See target.h. */ |
3674 | ||
02d27625 | 3675 | struct btrace_target_info * |
f4abbc16 | 3676 | target_enable_btrace (ptid_t ptid, const struct btrace_config *conf) |
02d27625 | 3677 | { |
f4abbc16 | 3678 | return current_target.to_enable_btrace (¤t_target, ptid, conf); |
02d27625 MM |
3679 | } |
3680 | ||
3681 | /* See target.h. */ | |
3682 | ||
3683 | void | |
3684 | target_disable_btrace (struct btrace_target_info *btinfo) | |
3685 | { | |
8dc292d3 | 3686 | current_target.to_disable_btrace (¤t_target, btinfo); |
02d27625 MM |
3687 | } |
3688 | ||
3689 | /* See target.h. */ | |
3690 | ||
3691 | void | |
3692 | target_teardown_btrace (struct btrace_target_info *btinfo) | |
3693 | { | |
9ace480d | 3694 | current_target.to_teardown_btrace (¤t_target, btinfo); |
02d27625 MM |
3695 | } |
3696 | ||
3697 | /* See target.h. */ | |
3698 | ||
969c39fb | 3699 | enum btrace_error |
734b0e4b | 3700 | target_read_btrace (struct btrace_data *btrace, |
969c39fb | 3701 | struct btrace_target_info *btinfo, |
02d27625 MM |
3702 | enum btrace_read_type type) |
3703 | { | |
eb5b20d4 | 3704 | return current_target.to_read_btrace (¤t_target, btrace, btinfo, type); |
02d27625 MM |
3705 | } |
3706 | ||
d02ed0bb MM |
3707 | /* See target.h. */ |
3708 | ||
f4abbc16 MM |
3709 | const struct btrace_config * |
3710 | target_btrace_conf (const struct btrace_target_info *btinfo) | |
3711 | { | |
3712 | return current_target.to_btrace_conf (¤t_target, btinfo); | |
3713 | } | |
3714 | ||
3715 | /* See target.h. */ | |
3716 | ||
7c1687a9 MM |
3717 | void |
3718 | target_stop_recording (void) | |
3719 | { | |
ee97f592 | 3720 | current_target.to_stop_recording (¤t_target); |
7c1687a9 MM |
3721 | } |
3722 | ||
3723 | /* See target.h. */ | |
3724 | ||
d02ed0bb | 3725 | void |
85e1311a | 3726 | target_save_record (const char *filename) |
d02ed0bb | 3727 | { |
f09e2107 | 3728 | current_target.to_save_record (¤t_target, filename); |
d02ed0bb MM |
3729 | } |
3730 | ||
3731 | /* See target.h. */ | |
3732 | ||
3733 | int | |
3734 | target_supports_delete_record (void) | |
3735 | { | |
3736 | struct target_ops *t; | |
3737 | ||
3738 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
b0ed115f TT |
3739 | if (t->to_delete_record != delegate_delete_record |
3740 | && t->to_delete_record != tdefault_delete_record) | |
d02ed0bb MM |
3741 | return 1; |
3742 | ||
3743 | return 0; | |
3744 | } | |
3745 | ||
3746 | /* See target.h. */ | |
3747 | ||
3748 | void | |
3749 | target_delete_record (void) | |
3750 | { | |
07366925 | 3751 | current_target.to_delete_record (¤t_target); |
d02ed0bb MM |
3752 | } |
3753 | ||
3754 | /* See target.h. */ | |
3755 | ||
b158a20f TW |
3756 | enum record_method |
3757 | target_record_method (ptid_t ptid) | |
3758 | { | |
3759 | return current_target.to_record_method (¤t_target, ptid); | |
3760 | } | |
3761 | ||
3762 | /* See target.h. */ | |
3763 | ||
d02ed0bb | 3764 | int |
a52eab48 | 3765 | target_record_is_replaying (ptid_t ptid) |
d02ed0bb | 3766 | { |
a52eab48 | 3767 | return current_target.to_record_is_replaying (¤t_target, ptid); |
d02ed0bb MM |
3768 | } |
3769 | ||
3770 | /* See target.h. */ | |
3771 | ||
7ff27e9b MM |
3772 | int |
3773 | target_record_will_replay (ptid_t ptid, int dir) | |
3774 | { | |
3775 | return current_target.to_record_will_replay (¤t_target, ptid, dir); | |
3776 | } | |
3777 | ||
3778 | /* See target.h. */ | |
3779 | ||
797094dd MM |
3780 | void |
3781 | target_record_stop_replaying (void) | |
3782 | { | |
3783 | current_target.to_record_stop_replaying (¤t_target); | |
3784 | } | |
3785 | ||
3786 | /* See target.h. */ | |
3787 | ||
d02ed0bb MM |
3788 | void |
3789 | target_goto_record_begin (void) | |
3790 | { | |
671e76cc | 3791 | current_target.to_goto_record_begin (¤t_target); |
d02ed0bb MM |
3792 | } |
3793 | ||
3794 | /* See target.h. */ | |
3795 | ||
3796 | void | |
3797 | target_goto_record_end (void) | |
3798 | { | |
e9179bb3 | 3799 | current_target.to_goto_record_end (¤t_target); |
d02ed0bb MM |
3800 | } |
3801 | ||
3802 | /* See target.h. */ | |
3803 | ||
3804 | void | |
3805 | target_goto_record (ULONGEST insn) | |
3806 | { | |
05969c84 | 3807 | current_target.to_goto_record (¤t_target, insn); |
d02ed0bb MM |
3808 | } |
3809 | ||
67c86d06 MM |
3810 | /* See target.h. */ |
3811 | ||
3812 | void | |
9a24775b | 3813 | target_insn_history (int size, gdb_disassembly_flags flags) |
67c86d06 | 3814 | { |
3679abfa | 3815 | current_target.to_insn_history (¤t_target, size, flags); |
67c86d06 MM |
3816 | } |
3817 | ||
3818 | /* See target.h. */ | |
3819 | ||
3820 | void | |
9a24775b PA |
3821 | target_insn_history_from (ULONGEST from, int size, |
3822 | gdb_disassembly_flags flags) | |
67c86d06 | 3823 | { |
8444ab58 | 3824 | current_target.to_insn_history_from (¤t_target, from, size, flags); |
67c86d06 MM |
3825 | } |
3826 | ||
3827 | /* See target.h. */ | |
3828 | ||
3829 | void | |
9a24775b PA |
3830 | target_insn_history_range (ULONGEST begin, ULONGEST end, |
3831 | gdb_disassembly_flags flags) | |
67c86d06 | 3832 | { |
c29302cc | 3833 | current_target.to_insn_history_range (¤t_target, begin, end, flags); |
67c86d06 MM |
3834 | } |
3835 | ||
15984c13 MM |
3836 | /* See target.h. */ |
3837 | ||
3838 | void | |
0cb7c7b0 | 3839 | target_call_history (int size, record_print_flags flags) |
15984c13 | 3840 | { |
170049d4 | 3841 | current_target.to_call_history (¤t_target, size, flags); |
15984c13 MM |
3842 | } |
3843 | ||
3844 | /* See target.h. */ | |
3845 | ||
3846 | void | |
0cb7c7b0 | 3847 | target_call_history_from (ULONGEST begin, int size, record_print_flags flags) |
15984c13 | 3848 | { |
16fc27d6 | 3849 | current_target.to_call_history_from (¤t_target, begin, size, flags); |
15984c13 MM |
3850 | } |
3851 | ||
3852 | /* See target.h. */ | |
3853 | ||
3854 | void | |
0cb7c7b0 | 3855 | target_call_history_range (ULONGEST begin, ULONGEST end, record_print_flags flags) |
15984c13 | 3856 | { |
115d9817 | 3857 | current_target.to_call_history_range (¤t_target, begin, end, flags); |
15984c13 MM |
3858 | } |
3859 | ||
ea001bdc MM |
3860 | /* See target.h. */ |
3861 | ||
3862 | const struct frame_unwind * | |
3863 | target_get_unwinder (void) | |
3864 | { | |
ac01945b | 3865 | return current_target.to_get_unwinder (¤t_target); |
ea001bdc MM |
3866 | } |
3867 | ||
3868 | /* See target.h. */ | |
3869 | ||
3870 | const struct frame_unwind * | |
3871 | target_get_tailcall_unwinder (void) | |
3872 | { | |
ac01945b | 3873 | return current_target.to_get_tailcall_unwinder (¤t_target); |
ea001bdc MM |
3874 | } |
3875 | ||
5fff78c4 MM |
3876 | /* See target.h. */ |
3877 | ||
3878 | void | |
3879 | target_prepare_to_generate_core (void) | |
3880 | { | |
3881 | current_target.to_prepare_to_generate_core (¤t_target); | |
3882 | } | |
3883 | ||
3884 | /* See target.h. */ | |
3885 | ||
3886 | void | |
3887 | target_done_generating_core (void) | |
3888 | { | |
3889 | current_target.to_done_generating_core (¤t_target); | |
3890 | } | |
3891 | ||
c906108c | 3892 | static void |
fba45db2 | 3893 | setup_target_debug (void) |
c906108c SS |
3894 | { |
3895 | memcpy (&debug_target, ¤t_target, sizeof debug_target); | |
3896 | ||
a7068b60 | 3897 | init_debug_target (¤t_target); |
c906108c | 3898 | } |
c906108c | 3899 | \f |
c5aa993b JM |
3900 | |
3901 | static char targ_desc[] = | |
3e43a32a MS |
3902 | "Names of targets and files being debugged.\nShows the entire \ |
3903 | stack of targets currently in use (including the exec-file,\n\ | |
c906108c SS |
3904 | core-file, and process, if any), as well as the symbol file name."; |
3905 | ||
a53f3625 | 3906 | static void |
a30bf1f1 TT |
3907 | default_rcmd (struct target_ops *self, const char *command, |
3908 | struct ui_file *output) | |
a53f3625 TT |
3909 | { |
3910 | error (_("\"monitor\" command not supported by this target.")); | |
3911 | } | |
3912 | ||
96baa820 | 3913 | static void |
0b39b52e | 3914 | do_monitor_command (const char *cmd, int from_tty) |
96baa820 | 3915 | { |
96baa820 JM |
3916 | target_rcmd (cmd, gdb_stdtarg); |
3917 | } | |
3918 | ||
78cbbba8 LM |
3919 | /* Erases all the memory regions marked as flash. CMD and FROM_TTY are |
3920 | ignored. */ | |
3921 | ||
3922 | void | |
0b39b52e | 3923 | flash_erase_command (const char *cmd, int from_tty) |
78cbbba8 LM |
3924 | { |
3925 | /* Used to communicate termination of flash operations to the target. */ | |
3926 | bool found_flash_region = false; | |
78cbbba8 LM |
3927 | struct gdbarch *gdbarch = target_gdbarch (); |
3928 | ||
a664f67e | 3929 | std::vector<mem_region> mem_regions = target_memory_map (); |
78cbbba8 LM |
3930 | |
3931 | /* Iterate over all memory regions. */ | |
a664f67e | 3932 | for (const mem_region &m : mem_regions) |
78cbbba8 | 3933 | { |
78cbbba8 | 3934 | /* Is this a flash memory region? */ |
a664f67e | 3935 | if (m.attrib.mode == MEM_FLASH) |
78cbbba8 LM |
3936 | { |
3937 | found_flash_region = true; | |
a664f67e | 3938 | target_flash_erase (m.lo, m.hi - m.lo); |
78cbbba8 | 3939 | |
76f9c9cf | 3940 | ui_out_emit_tuple tuple_emitter (current_uiout, "erased-regions"); |
78cbbba8 LM |
3941 | |
3942 | current_uiout->message (_("Erasing flash memory region at address ")); | |
a664f67e | 3943 | current_uiout->field_fmt ("address", "%s", paddress (gdbarch, m.lo)); |
78cbbba8 | 3944 | current_uiout->message (", size = "); |
a664f67e | 3945 | current_uiout->field_fmt ("size", "%s", hex_string (m.hi - m.lo)); |
78cbbba8 | 3946 | current_uiout->message ("\n"); |
78cbbba8 LM |
3947 | } |
3948 | } | |
3949 | ||
3950 | /* Did we do any flash operations? If so, we need to finalize them. */ | |
3951 | if (found_flash_region) | |
3952 | target_flash_done (); | |
3953 | else | |
3954 | current_uiout->message (_("No flash memory regions found.\n")); | |
3955 | } | |
3956 | ||
87680a14 JB |
3957 | /* Print the name of each layers of our target stack. */ |
3958 | ||
3959 | static void | |
d3cb6b99 | 3960 | maintenance_print_target_stack (const char *cmd, int from_tty) |
87680a14 JB |
3961 | { |
3962 | struct target_ops *t; | |
3963 | ||
3964 | printf_filtered (_("The current target stack is:\n")); | |
3965 | ||
3966 | for (t = target_stack; t != NULL; t = t->beneath) | |
3967 | { | |
3968 | printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname); | |
3969 | } | |
3970 | } | |
3971 | ||
372316f1 PA |
3972 | /* See target.h. */ |
3973 | ||
3974 | void | |
3975 | target_async (int enable) | |
3976 | { | |
3977 | infrun_async (enable); | |
3978 | current_target.to_async (¤t_target, enable); | |
3979 | } | |
3980 | ||
65706a29 PA |
3981 | /* See target.h. */ |
3982 | ||
3983 | void | |
3984 | target_thread_events (int enable) | |
3985 | { | |
3986 | current_target.to_thread_events (¤t_target, enable); | |
3987 | } | |
3988 | ||
329ea579 PA |
3989 | /* Controls if targets can report that they can/are async. This is |
3990 | just for maintainers to use when debugging gdb. */ | |
3991 | int target_async_permitted = 1; | |
c6ebd6cf VP |
3992 | |
3993 | /* The set command writes to this variable. If the inferior is | |
b5419e49 | 3994 | executing, target_async_permitted is *not* updated. */ |
329ea579 | 3995 | static int target_async_permitted_1 = 1; |
c6ebd6cf VP |
3996 | |
3997 | static void | |
eb4c3f4a | 3998 | maint_set_target_async_command (const char *args, int from_tty, |
329ea579 | 3999 | struct cmd_list_element *c) |
c6ebd6cf | 4000 | { |
c35b1492 | 4001 | if (have_live_inferiors ()) |
c6ebd6cf VP |
4002 | { |
4003 | target_async_permitted_1 = target_async_permitted; | |
4004 | error (_("Cannot change this setting while the inferior is running.")); | |
4005 | } | |
4006 | ||
4007 | target_async_permitted = target_async_permitted_1; | |
4008 | } | |
4009 | ||
4010 | static void | |
329ea579 PA |
4011 | maint_show_target_async_command (struct ui_file *file, int from_tty, |
4012 | struct cmd_list_element *c, | |
4013 | const char *value) | |
c6ebd6cf | 4014 | { |
3e43a32a MS |
4015 | fprintf_filtered (file, |
4016 | _("Controlling the inferior in " | |
4017 | "asynchronous mode is %s.\n"), value); | |
c6ebd6cf VP |
4018 | } |
4019 | ||
fbea99ea PA |
4020 | /* Return true if the target operates in non-stop mode even with "set |
4021 | non-stop off". */ | |
4022 | ||
4023 | static int | |
4024 | target_always_non_stop_p (void) | |
4025 | { | |
4026 | return current_target.to_always_non_stop_p (¤t_target); | |
4027 | } | |
4028 | ||
4029 | /* See target.h. */ | |
4030 | ||
4031 | int | |
4032 | target_is_non_stop_p (void) | |
4033 | { | |
4034 | return (non_stop | |
4035 | || target_non_stop_enabled == AUTO_BOOLEAN_TRUE | |
4036 | || (target_non_stop_enabled == AUTO_BOOLEAN_AUTO | |
4037 | && target_always_non_stop_p ())); | |
4038 | } | |
4039 | ||
4040 | /* Controls if targets can report that they always run in non-stop | |
4041 | mode. This is just for maintainers to use when debugging gdb. */ | |
4042 | enum auto_boolean target_non_stop_enabled = AUTO_BOOLEAN_AUTO; | |
4043 | ||
4044 | /* The set command writes to this variable. If the inferior is | |
4045 | executing, target_non_stop_enabled is *not* updated. */ | |
4046 | static enum auto_boolean target_non_stop_enabled_1 = AUTO_BOOLEAN_AUTO; | |
4047 | ||
4048 | /* Implementation of "maint set target-non-stop". */ | |
4049 | ||
4050 | static void | |
eb4c3f4a | 4051 | maint_set_target_non_stop_command (const char *args, int from_tty, |
fbea99ea PA |
4052 | struct cmd_list_element *c) |
4053 | { | |
4054 | if (have_live_inferiors ()) | |
4055 | { | |
4056 | target_non_stop_enabled_1 = target_non_stop_enabled; | |
4057 | error (_("Cannot change this setting while the inferior is running.")); | |
4058 | } | |
4059 | ||
4060 | target_non_stop_enabled = target_non_stop_enabled_1; | |
4061 | } | |
4062 | ||
4063 | /* Implementation of "maint show target-non-stop". */ | |
4064 | ||
4065 | static void | |
4066 | maint_show_target_non_stop_command (struct ui_file *file, int from_tty, | |
4067 | struct cmd_list_element *c, | |
4068 | const char *value) | |
4069 | { | |
4070 | if (target_non_stop_enabled == AUTO_BOOLEAN_AUTO) | |
4071 | fprintf_filtered (file, | |
4072 | _("Whether the target is always in non-stop mode " | |
4073 | "is %s (currently %s).\n"), value, | |
4074 | target_always_non_stop_p () ? "on" : "off"); | |
4075 | else | |
4076 | fprintf_filtered (file, | |
4077 | _("Whether the target is always in non-stop mode " | |
4078 | "is %s.\n"), value); | |
4079 | } | |
4080 | ||
d914c394 SS |
4081 | /* Temporary copies of permission settings. */ |
4082 | ||
4083 | static int may_write_registers_1 = 1; | |
4084 | static int may_write_memory_1 = 1; | |
4085 | static int may_insert_breakpoints_1 = 1; | |
4086 | static int may_insert_tracepoints_1 = 1; | |
4087 | static int may_insert_fast_tracepoints_1 = 1; | |
4088 | static int may_stop_1 = 1; | |
4089 | ||
4090 | /* Make the user-set values match the real values again. */ | |
4091 | ||
4092 | void | |
4093 | update_target_permissions (void) | |
4094 | { | |
4095 | may_write_registers_1 = may_write_registers; | |
4096 | may_write_memory_1 = may_write_memory; | |
4097 | may_insert_breakpoints_1 = may_insert_breakpoints; | |
4098 | may_insert_tracepoints_1 = may_insert_tracepoints; | |
4099 | may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints; | |
4100 | may_stop_1 = may_stop; | |
4101 | } | |
4102 | ||
4103 | /* The one function handles (most of) the permission flags in the same | |
4104 | way. */ | |
4105 | ||
4106 | static void | |
eb4c3f4a | 4107 | set_target_permissions (const char *args, int from_tty, |
d914c394 SS |
4108 | struct cmd_list_element *c) |
4109 | { | |
4110 | if (target_has_execution) | |
4111 | { | |
4112 | update_target_permissions (); | |
4113 | error (_("Cannot change this setting while the inferior is running.")); | |
4114 | } | |
4115 | ||
4116 | /* Make the real values match the user-changed values. */ | |
4117 | may_write_registers = may_write_registers_1; | |
4118 | may_insert_breakpoints = may_insert_breakpoints_1; | |
4119 | may_insert_tracepoints = may_insert_tracepoints_1; | |
4120 | may_insert_fast_tracepoints = may_insert_fast_tracepoints_1; | |
4121 | may_stop = may_stop_1; | |
4122 | update_observer_mode (); | |
4123 | } | |
4124 | ||
4125 | /* Set memory write permission independently of observer mode. */ | |
4126 | ||
4127 | static void | |
eb4c3f4a | 4128 | set_write_memory_permission (const char *args, int from_tty, |
d914c394 SS |
4129 | struct cmd_list_element *c) |
4130 | { | |
4131 | /* Make the real values match the user-changed values. */ | |
4132 | may_write_memory = may_write_memory_1; | |
4133 | update_observer_mode (); | |
4134 | } | |
4135 | ||
1b30aaa5 YQ |
4136 | #if GDB_SELF_TEST |
4137 | namespace selftests { | |
4138 | ||
4139 | static int | |
4140 | test_target_has_registers (target_ops *self) | |
4141 | { | |
4142 | return 1; | |
4143 | } | |
4144 | ||
4145 | static int | |
4146 | test_target_has_stack (target_ops *self) | |
4147 | { | |
4148 | return 1; | |
4149 | } | |
4150 | ||
4151 | static int | |
4152 | test_target_has_memory (target_ops *self) | |
4153 | { | |
4154 | return 1; | |
4155 | } | |
4156 | ||
4157 | static void | |
4158 | test_target_prepare_to_store (target_ops *self, regcache *regs) | |
4159 | { | |
4160 | } | |
4161 | ||
4162 | static void | |
4163 | test_target_store_registers (target_ops *self, regcache *regs, int regno) | |
4164 | { | |
4165 | } | |
4166 | ||
4167 | test_target_ops::test_target_ops () | |
4168 | : target_ops {} | |
4169 | { | |
4170 | to_magic = OPS_MAGIC; | |
4171 | to_stratum = process_stratum; | |
4172 | to_has_memory = test_target_has_memory; | |
4173 | to_has_stack = test_target_has_stack; | |
4174 | to_has_registers = test_target_has_registers; | |
4175 | to_prepare_to_store = test_target_prepare_to_store; | |
4176 | to_store_registers = test_target_store_registers; | |
4177 | ||
4178 | complete_target_initialization (this); | |
4179 | } | |
4180 | ||
4181 | } // namespace selftests | |
4182 | #endif /* GDB_SELF_TEST */ | |
d914c394 | 4183 | |
c906108c | 4184 | void |
fba45db2 | 4185 | initialize_targets (void) |
c906108c SS |
4186 | { |
4187 | init_dummy_target (); | |
4188 | push_target (&dummy_target); | |
4189 | ||
11db9430 SM |
4190 | add_info ("target", info_target_command, targ_desc); |
4191 | add_info ("files", info_target_command, targ_desc); | |
c906108c | 4192 | |
ccce17b0 | 4193 | add_setshow_zuinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
85c07804 AC |
4194 | Set target debugging."), _("\ |
4195 | Show target debugging."), _("\ | |
333dabeb | 4196 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
3cecbbbe TT |
4197 | verbose."), |
4198 | set_targetdebug, | |
ccce17b0 YQ |
4199 | show_targetdebug, |
4200 | &setdebuglist, &showdebuglist); | |
3a11626d | 4201 | |
2bc416ba | 4202 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
4203 | &trust_readonly, _("\ |
4204 | Set mode for reading from readonly sections."), _("\ | |
4205 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
4206 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
4207 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 4208 | result in significant performance improvement for remote targets."), |
2c5b56ce | 4209 | NULL, |
920d2a44 | 4210 | show_trust_readonly, |
e707bbc2 | 4211 | &setlist, &showlist); |
96baa820 JM |
4212 | |
4213 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 4214 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 4215 | |
87680a14 JB |
4216 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
4217 | _("Print the name of each layer of the internal target stack."), | |
4218 | &maintenanceprintlist); | |
4219 | ||
c6ebd6cf VP |
4220 | add_setshow_boolean_cmd ("target-async", no_class, |
4221 | &target_async_permitted_1, _("\ | |
4222 | Set whether gdb controls the inferior in asynchronous mode."), _("\ | |
4223 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
4224 | Tells gdb whether to control the inferior in asynchronous mode."), | |
329ea579 PA |
4225 | maint_set_target_async_command, |
4226 | maint_show_target_async_command, | |
4227 | &maintenance_set_cmdlist, | |
4228 | &maintenance_show_cmdlist); | |
c6ebd6cf | 4229 | |
fbea99ea PA |
4230 | add_setshow_auto_boolean_cmd ("target-non-stop", no_class, |
4231 | &target_non_stop_enabled_1, _("\ | |
4232 | Set whether gdb always controls the inferior in non-stop mode."), _("\ | |
4233 | Show whether gdb always controls the inferior in non-stop mode."), _("\ | |
4234 | Tells gdb whether to control the inferior in non-stop mode."), | |
4235 | maint_set_target_non_stop_command, | |
4236 | maint_show_target_non_stop_command, | |
4237 | &maintenance_set_cmdlist, | |
4238 | &maintenance_show_cmdlist); | |
4239 | ||
d914c394 SS |
4240 | add_setshow_boolean_cmd ("may-write-registers", class_support, |
4241 | &may_write_registers_1, _("\ | |
4242 | Set permission to write into registers."), _("\ | |
4243 | Show permission to write into registers."), _("\ | |
4244 | When this permission is on, GDB may write into the target's registers.\n\ | |
4245 | Otherwise, any sort of write attempt will result in an error."), | |
4246 | set_target_permissions, NULL, | |
4247 | &setlist, &showlist); | |
4248 | ||
4249 | add_setshow_boolean_cmd ("may-write-memory", class_support, | |
4250 | &may_write_memory_1, _("\ | |
4251 | Set permission to write into target memory."), _("\ | |
4252 | Show permission to write into target memory."), _("\ | |
4253 | When this permission is on, GDB may write into the target's memory.\n\ | |
4254 | Otherwise, any sort of write attempt will result in an error."), | |
4255 | set_write_memory_permission, NULL, | |
4256 | &setlist, &showlist); | |
4257 | ||
4258 | add_setshow_boolean_cmd ("may-insert-breakpoints", class_support, | |
4259 | &may_insert_breakpoints_1, _("\ | |
4260 | Set permission to insert breakpoints in the target."), _("\ | |
4261 | Show permission to insert breakpoints in the target."), _("\ | |
4262 | When this permission is on, GDB may insert breakpoints in the program.\n\ | |
4263 | Otherwise, any sort of insertion attempt will result in an error."), | |
4264 | set_target_permissions, NULL, | |
4265 | &setlist, &showlist); | |
4266 | ||
4267 | add_setshow_boolean_cmd ("may-insert-tracepoints", class_support, | |
4268 | &may_insert_tracepoints_1, _("\ | |
4269 | Set permission to insert tracepoints in the target."), _("\ | |
4270 | Show permission to insert tracepoints in the target."), _("\ | |
4271 | When this permission is on, GDB may insert tracepoints in the program.\n\ | |
4272 | Otherwise, any sort of insertion attempt will result in an error."), | |
4273 | set_target_permissions, NULL, | |
4274 | &setlist, &showlist); | |
4275 | ||
4276 | add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support, | |
4277 | &may_insert_fast_tracepoints_1, _("\ | |
4278 | Set permission to insert fast tracepoints in the target."), _("\ | |
4279 | Show permission to insert fast tracepoints in the target."), _("\ | |
4280 | When this permission is on, GDB may insert fast tracepoints.\n\ | |
4281 | Otherwise, any sort of insertion attempt will result in an error."), | |
4282 | set_target_permissions, NULL, | |
4283 | &setlist, &showlist); | |
4284 | ||
4285 | add_setshow_boolean_cmd ("may-interrupt", class_support, | |
4286 | &may_stop_1, _("\ | |
4287 | Set permission to interrupt or signal the target."), _("\ | |
4288 | Show permission to interrupt or signal the target."), _("\ | |
4289 | When this permission is on, GDB may interrupt/stop the target's execution.\n\ | |
4290 | Otherwise, any attempt to interrupt or stop will be ignored."), | |
4291 | set_target_permissions, NULL, | |
4292 | &setlist, &showlist); | |
6a3cb8e8 | 4293 | |
78cbbba8 LM |
4294 | add_com ("flash-erase", no_class, flash_erase_command, |
4295 | _("Erase all flash memory regions.")); | |
4296 | ||
6a3cb8e8 PA |
4297 | add_setshow_boolean_cmd ("auto-connect-native-target", class_support, |
4298 | &auto_connect_native_target, _("\ | |
4299 | Set whether GDB may automatically connect to the native target."), _("\ | |
4300 | Show whether GDB may automatically connect to the native target."), _("\ | |
4301 | When on, and GDB is not connected to a target yet, GDB\n\ | |
4302 | attempts \"run\" and other commands with the native target."), | |
4303 | NULL, show_auto_connect_native_target, | |
4304 | &setlist, &showlist); | |
c906108c | 4305 | } |