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" |
c906108c | 51 | |
f0f9ff95 TT |
52 | static void generic_tls_error (void) ATTRIBUTE_NORETURN; |
53 | ||
0a4f40a2 | 54 | static void default_terminal_info (struct target_ops *, const char *, int); |
c906108c | 55 | |
5009afc5 AS |
56 | static int default_watchpoint_addr_within_range (struct target_ops *, |
57 | CORE_ADDR, CORE_ADDR, int); | |
58 | ||
31568a15 TT |
59 | static int default_region_ok_for_hw_watchpoint (struct target_ops *, |
60 | CORE_ADDR, int); | |
e0d24f8d | 61 | |
a30bf1f1 | 62 | static void default_rcmd (struct target_ops *, const char *, struct ui_file *); |
a53f3625 | 63 | |
4229b31d TT |
64 | static ptid_t default_get_ada_task_ptid (struct target_ops *self, |
65 | long lwp, long tid); | |
66 | ||
098dba18 TT |
67 | static int default_follow_fork (struct target_ops *self, int follow_child, |
68 | int detach_fork); | |
69 | ||
8d657035 TT |
70 | static void default_mourn_inferior (struct target_ops *self); |
71 | ||
58a5184e TT |
72 | static int default_search_memory (struct target_ops *ops, |
73 | CORE_ADDR start_addr, | |
74 | ULONGEST search_space_len, | |
75 | const gdb_byte *pattern, | |
76 | ULONGEST pattern_len, | |
77 | CORE_ADDR *found_addrp); | |
78 | ||
936d2992 PA |
79 | static int default_verify_memory (struct target_ops *self, |
80 | const gdb_byte *data, | |
81 | CORE_ADDR memaddr, ULONGEST size); | |
82 | ||
8eaff7cd TT |
83 | static struct address_space *default_thread_address_space |
84 | (struct target_ops *self, ptid_t ptid); | |
85 | ||
c25c4a8b | 86 | static void tcomplain (void) ATTRIBUTE_NORETURN; |
c906108c | 87 | |
555bbdeb TT |
88 | static int return_zero (struct target_ops *); |
89 | ||
90 | static int return_zero_has_execution (struct target_ops *, ptid_t); | |
c906108c | 91 | |
a121b7c1 | 92 | static struct target_ops *find_default_run_target (const char *); |
c906108c | 93 | |
c2250ad1 UW |
94 | static struct gdbarch *default_thread_architecture (struct target_ops *ops, |
95 | ptid_t ptid); | |
96 | ||
0b5a2719 TT |
97 | static int dummy_find_memory_regions (struct target_ops *self, |
98 | find_memory_region_ftype ignore1, | |
99 | void *ignore2); | |
100 | ||
16f796b1 TT |
101 | static char *dummy_make_corefile_notes (struct target_ops *self, |
102 | bfd *ignore1, int *ignore2); | |
103 | ||
7a114964 | 104 | static const char *default_pid_to_str (struct target_ops *ops, ptid_t ptid); |
770234d3 | 105 | |
fe31bf5b TT |
106 | static enum exec_direction_kind default_execution_direction |
107 | (struct target_ops *self); | |
108 | ||
a7068b60 TT |
109 | static struct target_ops debug_target; |
110 | ||
1101cb7b TT |
111 | #include "target-delegates.c" |
112 | ||
a14ed312 | 113 | static void init_dummy_target (void); |
c906108c | 114 | |
3cecbbbe TT |
115 | static void update_current_target (void); |
116 | ||
89a1c21a SM |
117 | /* Vector of existing target structures. */ |
118 | typedef struct target_ops *target_ops_p; | |
119 | DEF_VEC_P (target_ops_p); | |
120 | static VEC (target_ops_p) *target_structs; | |
c906108c SS |
121 | |
122 | /* The initial current target, so that there is always a semi-valid | |
123 | current target. */ | |
124 | ||
125 | static struct target_ops dummy_target; | |
126 | ||
127 | /* Top of target stack. */ | |
128 | ||
258b763a | 129 | static struct target_ops *target_stack; |
c906108c SS |
130 | |
131 | /* The target structure we are currently using to talk to a process | |
132 | or file or whatever "inferior" we have. */ | |
133 | ||
134 | struct target_ops current_target; | |
135 | ||
136 | /* Command list for target. */ | |
137 | ||
138 | static struct cmd_list_element *targetlist = NULL; | |
139 | ||
cf7a04e8 DJ |
140 | /* Nonzero if we should trust readonly sections from the |
141 | executable when reading memory. */ | |
142 | ||
143 | static int trust_readonly = 0; | |
144 | ||
8defab1a DJ |
145 | /* Nonzero if we should show true memory content including |
146 | memory breakpoint inserted by gdb. */ | |
147 | ||
148 | static int show_memory_breakpoints = 0; | |
149 | ||
d914c394 SS |
150 | /* These globals control whether GDB attempts to perform these |
151 | operations; they are useful for targets that need to prevent | |
152 | inadvertant disruption, such as in non-stop mode. */ | |
153 | ||
154 | int may_write_registers = 1; | |
155 | ||
156 | int may_write_memory = 1; | |
157 | ||
158 | int may_insert_breakpoints = 1; | |
159 | ||
160 | int may_insert_tracepoints = 1; | |
161 | ||
162 | int may_insert_fast_tracepoints = 1; | |
163 | ||
164 | int may_stop = 1; | |
165 | ||
c906108c SS |
166 | /* Non-zero if we want to see trace of target level stuff. */ |
167 | ||
ccce17b0 | 168 | static unsigned int targetdebug = 0; |
3cecbbbe TT |
169 | |
170 | static void | |
eb4c3f4a | 171 | set_targetdebug (const char *args, int from_tty, struct cmd_list_element *c) |
3cecbbbe TT |
172 | { |
173 | update_current_target (); | |
174 | } | |
175 | ||
920d2a44 AC |
176 | static void |
177 | show_targetdebug (struct ui_file *file, int from_tty, | |
178 | struct cmd_list_element *c, const char *value) | |
179 | { | |
180 | fprintf_filtered (file, _("Target debugging is %s.\n"), value); | |
181 | } | |
c906108c | 182 | |
a14ed312 | 183 | static void setup_target_debug (void); |
c906108c | 184 | |
c906108c SS |
185 | /* The user just typed 'target' without the name of a target. */ |
186 | ||
c906108c | 187 | static void |
981a3fb3 | 188 | target_command (const char *arg, int from_tty) |
c906108c SS |
189 | { |
190 | fputs_filtered ("Argument required (target name). Try `help target'\n", | |
191 | gdb_stdout); | |
192 | } | |
193 | ||
c35b1492 PA |
194 | /* Default target_has_* methods for process_stratum targets. */ |
195 | ||
196 | int | |
197 | default_child_has_all_memory (struct target_ops *ops) | |
198 | { | |
199 | /* If no inferior selected, then we can't read memory here. */ | |
200 | if (ptid_equal (inferior_ptid, null_ptid)) | |
201 | return 0; | |
202 | ||
203 | return 1; | |
204 | } | |
205 | ||
206 | int | |
207 | default_child_has_memory (struct target_ops *ops) | |
208 | { | |
209 | /* If no inferior selected, then we can't read memory here. */ | |
210 | if (ptid_equal (inferior_ptid, null_ptid)) | |
211 | return 0; | |
212 | ||
213 | return 1; | |
214 | } | |
215 | ||
216 | int | |
217 | default_child_has_stack (struct target_ops *ops) | |
218 | { | |
219 | /* If no inferior selected, there's no stack. */ | |
220 | if (ptid_equal (inferior_ptid, null_ptid)) | |
221 | return 0; | |
222 | ||
223 | return 1; | |
224 | } | |
225 | ||
226 | int | |
227 | default_child_has_registers (struct target_ops *ops) | |
228 | { | |
229 | /* Can't read registers from no inferior. */ | |
230 | if (ptid_equal (inferior_ptid, null_ptid)) | |
231 | return 0; | |
232 | ||
233 | return 1; | |
234 | } | |
235 | ||
236 | int | |
aeaec162 | 237 | default_child_has_execution (struct target_ops *ops, ptid_t the_ptid) |
c35b1492 PA |
238 | { |
239 | /* If there's no thread selected, then we can't make it run through | |
240 | hoops. */ | |
aeaec162 | 241 | if (ptid_equal (the_ptid, null_ptid)) |
c35b1492 PA |
242 | return 0; |
243 | ||
244 | return 1; | |
245 | } | |
246 | ||
247 | ||
248 | int | |
249 | target_has_all_memory_1 (void) | |
250 | { | |
251 | struct target_ops *t; | |
252 | ||
253 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
254 | if (t->to_has_all_memory (t)) | |
255 | return 1; | |
256 | ||
257 | return 0; | |
258 | } | |
259 | ||
260 | int | |
261 | target_has_memory_1 (void) | |
262 | { | |
263 | struct target_ops *t; | |
264 | ||
265 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
266 | if (t->to_has_memory (t)) | |
267 | return 1; | |
268 | ||
269 | return 0; | |
270 | } | |
271 | ||
272 | int | |
273 | target_has_stack_1 (void) | |
274 | { | |
275 | struct target_ops *t; | |
276 | ||
277 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
278 | if (t->to_has_stack (t)) | |
279 | return 1; | |
280 | ||
281 | return 0; | |
282 | } | |
283 | ||
284 | int | |
285 | target_has_registers_1 (void) | |
286 | { | |
287 | struct target_ops *t; | |
288 | ||
289 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
290 | if (t->to_has_registers (t)) | |
291 | return 1; | |
292 | ||
293 | return 0; | |
294 | } | |
295 | ||
296 | int | |
aeaec162 | 297 | target_has_execution_1 (ptid_t the_ptid) |
c35b1492 PA |
298 | { |
299 | struct target_ops *t; | |
300 | ||
301 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
aeaec162 | 302 | if (t->to_has_execution (t, the_ptid)) |
c35b1492 PA |
303 | return 1; |
304 | ||
305 | return 0; | |
306 | } | |
307 | ||
aeaec162 TT |
308 | int |
309 | target_has_execution_current (void) | |
310 | { | |
311 | return target_has_execution_1 (inferior_ptid); | |
312 | } | |
313 | ||
c22a2b88 TT |
314 | /* Complete initialization of T. This ensures that various fields in |
315 | T are set, if needed by the target implementation. */ | |
c906108c SS |
316 | |
317 | void | |
c22a2b88 | 318 | complete_target_initialization (struct target_ops *t) |
c906108c | 319 | { |
0088c768 | 320 | /* Provide default values for all "must have" methods. */ |
0088c768 | 321 | |
c35b1492 | 322 | if (t->to_has_all_memory == NULL) |
555bbdeb | 323 | t->to_has_all_memory = return_zero; |
c35b1492 PA |
324 | |
325 | if (t->to_has_memory == NULL) | |
555bbdeb | 326 | t->to_has_memory = return_zero; |
c35b1492 PA |
327 | |
328 | if (t->to_has_stack == NULL) | |
555bbdeb | 329 | t->to_has_stack = return_zero; |
c35b1492 PA |
330 | |
331 | if (t->to_has_registers == NULL) | |
555bbdeb | 332 | t->to_has_registers = return_zero; |
c35b1492 PA |
333 | |
334 | if (t->to_has_execution == NULL) | |
555bbdeb | 335 | t->to_has_execution = return_zero_has_execution; |
1101cb7b | 336 | |
b3ccfe11 TT |
337 | /* These methods can be called on an unpushed target and so require |
338 | a default implementation if the target might plausibly be the | |
339 | default run target. */ | |
340 | gdb_assert (t->to_can_run == NULL || (t->to_can_async_p != NULL | |
341 | && t->to_supports_non_stop != NULL)); | |
342 | ||
1101cb7b | 343 | install_delegators (t); |
c22a2b88 TT |
344 | } |
345 | ||
8981c758 TT |
346 | /* This is used to implement the various target commands. */ |
347 | ||
348 | static void | |
eb4c3f4a | 349 | open_target (const char *args, int from_tty, struct cmd_list_element *command) |
8981c758 | 350 | { |
19ba03f4 | 351 | struct target_ops *ops = (struct target_ops *) get_cmd_context (command); |
8981c758 TT |
352 | |
353 | if (targetdebug) | |
354 | fprintf_unfiltered (gdb_stdlog, "-> %s->to_open (...)\n", | |
355 | ops->to_shortname); | |
356 | ||
357 | ops->to_open (args, from_tty); | |
358 | ||
359 | if (targetdebug) | |
360 | fprintf_unfiltered (gdb_stdlog, "<- %s->to_open (%s, %d)\n", | |
361 | ops->to_shortname, args, from_tty); | |
362 | } | |
363 | ||
c22a2b88 TT |
364 | /* Add possible target architecture T to the list and add a new |
365 | command 'target T->to_shortname'. Set COMPLETER as the command's | |
366 | completer if not NULL. */ | |
367 | ||
368 | void | |
369 | add_target_with_completer (struct target_ops *t, | |
370 | completer_ftype *completer) | |
371 | { | |
372 | struct cmd_list_element *c; | |
373 | ||
374 | complete_target_initialization (t); | |
c35b1492 | 375 | |
89a1c21a | 376 | VEC_safe_push (target_ops_p, target_structs, t); |
c906108c SS |
377 | |
378 | if (targetlist == NULL) | |
1bedd215 AC |
379 | add_prefix_cmd ("target", class_run, target_command, _("\ |
380 | Connect to a target machine or process.\n\ | |
c906108c SS |
381 | The first argument is the type or protocol of the target machine.\n\ |
382 | Remaining arguments are interpreted by the target protocol. For more\n\ | |
383 | information on the arguments for a particular protocol, type\n\ | |
1bedd215 | 384 | `help target ' followed by the protocol name."), |
c906108c | 385 | &targetlist, "target ", 0, &cmdlist); |
0450cc4c | 386 | c = add_cmd (t->to_shortname, no_class, t->to_doc, &targetlist); |
8981c758 TT |
387 | set_cmd_sfunc (c, open_target); |
388 | set_cmd_context (c, t); | |
9852c492 YQ |
389 | if (completer != NULL) |
390 | set_cmd_completer (c, completer); | |
391 | } | |
392 | ||
393 | /* Add a possible target architecture to the list. */ | |
394 | ||
395 | void | |
396 | add_target (struct target_ops *t) | |
397 | { | |
398 | add_target_with_completer (t, NULL); | |
c906108c SS |
399 | } |
400 | ||
b48d48eb MM |
401 | /* See target.h. */ |
402 | ||
403 | void | |
a121b7c1 | 404 | add_deprecated_target_alias (struct target_ops *t, const char *alias) |
b48d48eb MM |
405 | { |
406 | struct cmd_list_element *c; | |
407 | char *alt; | |
408 | ||
409 | /* If we use add_alias_cmd, here, we do not get the deprecated warning, | |
410 | see PR cli/15104. */ | |
0450cc4c | 411 | c = add_cmd (alias, no_class, t->to_doc, &targetlist); |
8981c758 TT |
412 | set_cmd_sfunc (c, open_target); |
413 | set_cmd_context (c, t); | |
b48d48eb MM |
414 | alt = xstrprintf ("target %s", t->to_shortname); |
415 | deprecate_cmd (c, alt); | |
416 | } | |
417 | ||
c906108c SS |
418 | /* Stub functions */ |
419 | ||
7d85a9c0 JB |
420 | void |
421 | target_kill (void) | |
422 | { | |
423a4807 | 423 | current_target.to_kill (¤t_target); |
7d85a9c0 JB |
424 | } |
425 | ||
11cf8741 | 426 | void |
9cbe5fff | 427 | target_load (const char *arg, int from_tty) |
11cf8741 | 428 | { |
4e5d721f | 429 | target_dcache_invalidate (); |
71a9f134 | 430 | (*current_target.to_load) (¤t_target, arg, from_tty); |
11cf8741 JM |
431 | } |
432 | ||
223ffa71 | 433 | /* Define it. */ |
5842f62a | 434 | |
e671cd59 PA |
435 | target_terminal_state target_terminal::m_terminal_state |
436 | = target_terminal_state::is_ours; | |
5842f62a | 437 | |
223ffa71 | 438 | /* See target/target.h. */ |
5842f62a PA |
439 | |
440 | void | |
223ffa71 | 441 | target_terminal::init (void) |
5842f62a PA |
442 | { |
443 | (*current_target.to_terminal_init) (¤t_target); | |
444 | ||
e671cd59 | 445 | m_terminal_state = target_terminal_state::is_ours; |
5842f62a PA |
446 | } |
447 | ||
223ffa71 | 448 | /* See target/target.h. */ |
2f99e8fc | 449 | |
d9d2d8b6 | 450 | void |
223ffa71 | 451 | target_terminal::inferior (void) |
d9d2d8b6 | 452 | { |
41fd2b0f PA |
453 | struct ui *ui = current_ui; |
454 | ||
d9d2d8b6 | 455 | /* A background resume (``run&'') should leave GDB in control of the |
3b12939d PA |
456 | terminal. */ |
457 | if (ui->prompt_state != PROMPT_BLOCKED) | |
d9d2d8b6 PA |
458 | return; |
459 | ||
215d3118 PA |
460 | /* Since we always run the inferior in the main console (unless "set |
461 | inferior-tty" is in effect), when some UI other than the main one | |
223ffa71 TT |
462 | calls target_terminal::inferior, then we leave the main UI's |
463 | terminal settings as is. */ | |
215d3118 PA |
464 | if (ui != main_ui) |
465 | return; | |
466 | ||
d9d2d8b6 PA |
467 | /* If GDB is resuming the inferior in the foreground, install |
468 | inferior's terminal modes. */ | |
e671cd59 PA |
469 | |
470 | struct inferior *inf = current_inferior (); | |
471 | ||
472 | if (inf->terminal_state != target_terminal_state::is_inferior) | |
473 | { | |
474 | (*current_target.to_terminal_inferior) (¤t_target); | |
475 | inf->terminal_state = target_terminal_state::is_inferior; | |
476 | } | |
477 | ||
478 | m_terminal_state = target_terminal_state::is_inferior; | |
479 | ||
480 | /* If the user hit C-c before, pretend that it was hit right | |
481 | here. */ | |
482 | if (check_quit_flag ()) | |
483 | target_pass_ctrlc (); | |
484 | } | |
485 | ||
486 | /* See target/target.h. */ | |
487 | ||
488 | void | |
489 | target_terminal::restore_inferior (void) | |
490 | { | |
491 | struct ui *ui = current_ui; | |
492 | ||
493 | /* See target_terminal::inferior(). */ | |
494 | if (ui->prompt_state != PROMPT_BLOCKED || ui != main_ui) | |
495 | return; | |
496 | ||
497 | /* Restore the terminal settings of inferiors that were in the | |
498 | foreground but are now ours_for_output due to a temporary | |
499 | target_target::ours_for_output() call. */ | |
500 | ||
501 | { | |
502 | scoped_restore_current_inferior restore_inferior; | |
503 | struct inferior *inf; | |
504 | ||
505 | ALL_INFERIORS (inf) | |
506 | { | |
507 | if (inf->terminal_state == target_terminal_state::is_ours_for_output) | |
508 | { | |
509 | set_current_inferior (inf); | |
510 | (*current_target.to_terminal_inferior) (¤t_target); | |
511 | inf->terminal_state = target_terminal_state::is_inferior; | |
512 | } | |
513 | } | |
514 | } | |
515 | ||
516 | m_terminal_state = target_terminal_state::is_inferior; | |
93692b58 PA |
517 | |
518 | /* If the user hit C-c before, pretend that it was hit right | |
519 | here. */ | |
520 | if (check_quit_flag ()) | |
521 | target_pass_ctrlc (); | |
5842f62a PA |
522 | } |
523 | ||
e671cd59 PA |
524 | /* Switch terminal state to DESIRED_STATE, either is_ours, or |
525 | is_ours_for_output. */ | |
526 | ||
527 | static void | |
528 | target_terminal_is_ours_kind (target_terminal_state desired_state) | |
529 | { | |
530 | scoped_restore_current_inferior restore_inferior; | |
531 | struct inferior *inf; | |
532 | ||
533 | /* Must do this in two passes. First, have all inferiors save the | |
534 | current terminal settings. Then, after all inferiors have add a | |
535 | chance to safely save the terminal settings, restore GDB's | |
536 | terminal settings. */ | |
537 | ||
538 | ALL_INFERIORS (inf) | |
539 | { | |
540 | if (inf->terminal_state == target_terminal_state::is_inferior) | |
541 | { | |
542 | set_current_inferior (inf); | |
543 | (*current_target.to_terminal_save_inferior) (¤t_target); | |
544 | } | |
545 | } | |
546 | ||
547 | ALL_INFERIORS (inf) | |
548 | { | |
549 | /* Note we don't check is_inferior here like above because we | |
550 | need to handle 'is_ours_for_output -> is_ours' too. Careful | |
551 | to never transition from 'is_ours' to 'is_ours_for_output', | |
552 | though. */ | |
553 | if (inf->terminal_state != target_terminal_state::is_ours | |
554 | && inf->terminal_state != desired_state) | |
555 | { | |
556 | set_current_inferior (inf); | |
557 | if (desired_state == target_terminal_state::is_ours) | |
558 | (*current_target.to_terminal_ours) (¤t_target); | |
559 | else if (desired_state == target_terminal_state::is_ours_for_output) | |
560 | (*current_target.to_terminal_ours_for_output) (¤t_target); | |
561 | else | |
562 | gdb_assert_not_reached ("unhandled desired state"); | |
563 | inf->terminal_state = desired_state; | |
564 | } | |
565 | } | |
566 | } | |
567 | ||
223ffa71 | 568 | /* See target/target.h. */ |
5842f62a PA |
569 | |
570 | void | |
223ffa71 | 571 | target_terminal::ours () |
5842f62a | 572 | { |
41fd2b0f PA |
573 | struct ui *ui = current_ui; |
574 | ||
223ffa71 | 575 | /* See target_terminal::inferior. */ |
215d3118 PA |
576 | if (ui != main_ui) |
577 | return; | |
578 | ||
e671cd59 | 579 | if (m_terminal_state == target_terminal_state::is_ours) |
5842f62a PA |
580 | return; |
581 | ||
e671cd59 PA |
582 | target_terminal_is_ours_kind (target_terminal_state::is_ours); |
583 | m_terminal_state = target_terminal_state::is_ours; | |
5842f62a PA |
584 | } |
585 | ||
223ffa71 | 586 | /* See target/target.h. */ |
5842f62a PA |
587 | |
588 | void | |
223ffa71 | 589 | target_terminal::ours_for_output () |
5842f62a | 590 | { |
215d3118 PA |
591 | struct ui *ui = current_ui; |
592 | ||
223ffa71 | 593 | /* See target_terminal::inferior. */ |
215d3118 PA |
594 | if (ui != main_ui) |
595 | return; | |
596 | ||
e671cd59 | 597 | if (!target_terminal::is_inferior ()) |
5842f62a | 598 | return; |
e671cd59 PA |
599 | |
600 | target_terminal_is_ours_kind (target_terminal_state::is_ours_for_output); | |
601 | target_terminal::m_terminal_state = target_terminal_state::is_ours_for_output; | |
d9d2d8b6 | 602 | } |
136d6dae | 603 | |
223ffa71 TT |
604 | /* See target/target.h. */ |
605 | ||
606 | void | |
607 | target_terminal::info (const char *arg, int from_tty) | |
608 | { | |
609 | (*current_target.to_terminal_info) (¤t_target, arg, from_tty); | |
610 | } | |
611 | ||
b0ed115f TT |
612 | /* See target.h. */ |
613 | ||
614 | int | |
615 | target_supports_terminal_ours (void) | |
616 | { | |
617 | struct target_ops *t; | |
618 | ||
619 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
620 | { | |
621 | if (t->to_terminal_ours != delegate_terminal_ours | |
622 | && t->to_terminal_ours != tdefault_terminal_ours) | |
623 | return 1; | |
624 | } | |
625 | ||
626 | return 0; | |
627 | } | |
628 | ||
c906108c | 629 | static void |
fba45db2 | 630 | tcomplain (void) |
c906108c | 631 | { |
8a3fe4f8 | 632 | error (_("You can't do that when your target is `%s'"), |
c906108c SS |
633 | current_target.to_shortname); |
634 | } | |
635 | ||
636 | void | |
fba45db2 | 637 | noprocess (void) |
c906108c | 638 | { |
8a3fe4f8 | 639 | error (_("You can't do that without a process to debug.")); |
c906108c SS |
640 | } |
641 | ||
c906108c | 642 | static void |
0a4f40a2 | 643 | default_terminal_info (struct target_ops *self, const char *args, int from_tty) |
c906108c | 644 | { |
a3f17187 | 645 | printf_unfiltered (_("No saved terminal information.\n")); |
c906108c SS |
646 | } |
647 | ||
0ef643c8 JB |
648 | /* A default implementation for the to_get_ada_task_ptid target method. |
649 | ||
650 | This function builds the PTID by using both LWP and TID as part of | |
651 | the PTID lwp and tid elements. The pid used is the pid of the | |
652 | inferior_ptid. */ | |
653 | ||
2c0b251b | 654 | static ptid_t |
1e6b91a4 | 655 | default_get_ada_task_ptid (struct target_ops *self, long lwp, long tid) |
0ef643c8 JB |
656 | { |
657 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid); | |
658 | } | |
659 | ||
32231432 | 660 | static enum exec_direction_kind |
4c612759 | 661 | default_execution_direction (struct target_ops *self) |
32231432 PA |
662 | { |
663 | if (!target_can_execute_reverse) | |
664 | return EXEC_FORWARD; | |
665 | else if (!target_can_async_p ()) | |
666 | return EXEC_FORWARD; | |
667 | else | |
668 | gdb_assert_not_reached ("\ | |
669 | to_execution_direction must be implemented for reverse async"); | |
670 | } | |
671 | ||
7998dfc3 AC |
672 | /* Go through the target stack from top to bottom, copying over zero |
673 | entries in current_target, then filling in still empty entries. In | |
674 | effect, we are doing class inheritance through the pushed target | |
675 | vectors. | |
676 | ||
677 | NOTE: cagney/2003-10-17: The problem with this inheritance, as it | |
678 | is currently implemented, is that it discards any knowledge of | |
679 | which target an inherited method originally belonged to. | |
680 | Consequently, new new target methods should instead explicitly and | |
681 | locally search the target stack for the target that can handle the | |
682 | request. */ | |
c906108c SS |
683 | |
684 | static void | |
7998dfc3 | 685 | update_current_target (void) |
c906108c | 686 | { |
7998dfc3 AC |
687 | struct target_ops *t; |
688 | ||
08d8bcd7 | 689 | /* First, reset current's contents. */ |
7998dfc3 AC |
690 | memset (¤t_target, 0, sizeof (current_target)); |
691 | ||
1101cb7b TT |
692 | /* Install the delegators. */ |
693 | install_delegators (¤t_target); | |
694 | ||
be4ddd36 TT |
695 | current_target.to_stratum = target_stack->to_stratum; |
696 | ||
7998dfc3 AC |
697 | #define INHERIT(FIELD, TARGET) \ |
698 | if (!current_target.FIELD) \ | |
699 | current_target.FIELD = (TARGET)->FIELD | |
700 | ||
be4ddd36 TT |
701 | /* Do not add any new INHERITs here. Instead, use the delegation |
702 | mechanism provided by make-target-delegates. */ | |
7998dfc3 AC |
703 | for (t = target_stack; t; t = t->beneath) |
704 | { | |
705 | INHERIT (to_shortname, t); | |
706 | INHERIT (to_longname, t); | |
dc177b7a | 707 | INHERIT (to_attach_no_wait, t); |
74174d2e | 708 | INHERIT (to_have_steppable_watchpoint, t); |
7998dfc3 | 709 | INHERIT (to_have_continuable_watchpoint, t); |
7998dfc3 | 710 | INHERIT (to_has_thread_control, t); |
7998dfc3 AC |
711 | } |
712 | #undef INHERIT | |
713 | ||
7998dfc3 AC |
714 | /* Finally, position the target-stack beneath the squashed |
715 | "current_target". That way code looking for a non-inherited | |
716 | target method can quickly and simply find it. */ | |
717 | current_target.beneath = target_stack; | |
b4b61fdb DJ |
718 | |
719 | if (targetdebug) | |
720 | setup_target_debug (); | |
c906108c SS |
721 | } |
722 | ||
723 | /* Push a new target type into the stack of the existing target accessors, | |
724 | possibly superseding some of the existing accessors. | |
725 | ||
c906108c SS |
726 | Rather than allow an empty stack, we always have the dummy target at |
727 | the bottom stratum, so we can call the function vectors without | |
728 | checking them. */ | |
729 | ||
b26a4dcb | 730 | void |
fba45db2 | 731 | push_target (struct target_ops *t) |
c906108c | 732 | { |
258b763a | 733 | struct target_ops **cur; |
c906108c SS |
734 | |
735 | /* Check magic number. If wrong, it probably means someone changed | |
736 | the struct definition, but not all the places that initialize one. */ | |
737 | if (t->to_magic != OPS_MAGIC) | |
738 | { | |
c5aa993b JM |
739 | fprintf_unfiltered (gdb_stderr, |
740 | "Magic number of %s target struct wrong\n", | |
741 | t->to_shortname); | |
3e43a32a MS |
742 | internal_error (__FILE__, __LINE__, |
743 | _("failed internal consistency check")); | |
c906108c SS |
744 | } |
745 | ||
258b763a AC |
746 | /* Find the proper stratum to install this target in. */ |
747 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
c906108c | 748 | { |
258b763a | 749 | if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum) |
c906108c SS |
750 | break; |
751 | } | |
752 | ||
258b763a | 753 | /* If there's already targets at this stratum, remove them. */ |
88c231eb | 754 | /* FIXME: cagney/2003-10-15: I think this should be popping all |
258b763a AC |
755 | targets to CUR, and not just those at this stratum level. */ |
756 | while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum) | |
757 | { | |
758 | /* There's already something at this stratum level. Close it, | |
759 | and un-hook it from the stack. */ | |
760 | struct target_ops *tmp = (*cur); | |
5d502164 | 761 | |
258b763a AC |
762 | (*cur) = (*cur)->beneath; |
763 | tmp->beneath = NULL; | |
460014f5 | 764 | target_close (tmp); |
258b763a | 765 | } |
c906108c SS |
766 | |
767 | /* We have removed all targets in our stratum, now add the new one. */ | |
258b763a AC |
768 | t->beneath = (*cur); |
769 | (*cur) = t; | |
c906108c SS |
770 | |
771 | update_current_target (); | |
c906108c SS |
772 | } |
773 | ||
2bc416ba | 774 | /* Remove a target_ops vector from the stack, wherever it may be. |
c906108c SS |
775 | Return how many times it was removed (0 or 1). */ |
776 | ||
777 | int | |
fba45db2 | 778 | unpush_target (struct target_ops *t) |
c906108c | 779 | { |
258b763a AC |
780 | struct target_ops **cur; |
781 | struct target_ops *tmp; | |
c906108c | 782 | |
c8d104ad PA |
783 | if (t->to_stratum == dummy_stratum) |
784 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 785 | _("Attempt to unpush the dummy target")); |
c8d104ad | 786 | |
c906108c | 787 | /* Look for the specified target. Note that we assume that a target |
c378eb4e | 788 | can only occur once in the target stack. */ |
c906108c | 789 | |
258b763a AC |
790 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) |
791 | { | |
792 | if ((*cur) == t) | |
793 | break; | |
794 | } | |
c906108c | 795 | |
305436e0 PA |
796 | /* If we don't find target_ops, quit. Only open targets should be |
797 | closed. */ | |
258b763a | 798 | if ((*cur) == NULL) |
305436e0 | 799 | return 0; |
5269965e | 800 | |
c378eb4e | 801 | /* Unchain the target. */ |
258b763a AC |
802 | tmp = (*cur); |
803 | (*cur) = (*cur)->beneath; | |
804 | tmp->beneath = NULL; | |
c906108c SS |
805 | |
806 | update_current_target (); | |
c906108c | 807 | |
305436e0 PA |
808 | /* Finally close the target. Note we do this after unchaining, so |
809 | any target method calls from within the target_close | |
810 | implementation don't end up in T anymore. */ | |
460014f5 | 811 | target_close (t); |
305436e0 | 812 | |
c906108c SS |
813 | return 1; |
814 | } | |
815 | ||
915ef8b1 PA |
816 | /* Unpush TARGET and assert that it worked. */ |
817 | ||
818 | static void | |
819 | unpush_target_and_assert (struct target_ops *target) | |
820 | { | |
821 | if (!unpush_target (target)) | |
822 | { | |
823 | fprintf_unfiltered (gdb_stderr, | |
824 | "pop_all_targets couldn't find target %s\n", | |
825 | target->to_shortname); | |
826 | internal_error (__FILE__, __LINE__, | |
827 | _("failed internal consistency check")); | |
828 | } | |
829 | } | |
830 | ||
aa76d38d | 831 | void |
460014f5 | 832 | pop_all_targets_above (enum strata above_stratum) |
aa76d38d | 833 | { |
87ab71f0 | 834 | while ((int) (current_target.to_stratum) > (int) above_stratum) |
915ef8b1 PA |
835 | unpush_target_and_assert (target_stack); |
836 | } | |
837 | ||
838 | /* See target.h. */ | |
839 | ||
840 | void | |
841 | pop_all_targets_at_and_above (enum strata stratum) | |
842 | { | |
843 | while ((int) (current_target.to_stratum) >= (int) stratum) | |
844 | unpush_target_and_assert (target_stack); | |
aa76d38d PA |
845 | } |
846 | ||
87ab71f0 | 847 | void |
460014f5 | 848 | pop_all_targets (void) |
87ab71f0 | 849 | { |
460014f5 | 850 | pop_all_targets_above (dummy_stratum); |
87ab71f0 PA |
851 | } |
852 | ||
c0edd9ed JK |
853 | /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */ |
854 | ||
855 | int | |
856 | target_is_pushed (struct target_ops *t) | |
857 | { | |
84202f9c | 858 | struct target_ops *cur; |
c0edd9ed JK |
859 | |
860 | /* Check magic number. If wrong, it probably means someone changed | |
861 | the struct definition, but not all the places that initialize one. */ | |
862 | if (t->to_magic != OPS_MAGIC) | |
863 | { | |
864 | fprintf_unfiltered (gdb_stderr, | |
865 | "Magic number of %s target struct wrong\n", | |
866 | t->to_shortname); | |
3e43a32a MS |
867 | internal_error (__FILE__, __LINE__, |
868 | _("failed internal consistency check")); | |
c0edd9ed JK |
869 | } |
870 | ||
84202f9c TT |
871 | for (cur = target_stack; cur != NULL; cur = cur->beneath) |
872 | if (cur == t) | |
c0edd9ed JK |
873 | return 1; |
874 | ||
875 | return 0; | |
876 | } | |
877 | ||
f0f9ff95 TT |
878 | /* Default implementation of to_get_thread_local_address. */ |
879 | ||
880 | static void | |
881 | generic_tls_error (void) | |
882 | { | |
883 | throw_error (TLS_GENERIC_ERROR, | |
884 | _("Cannot find thread-local variables on this target")); | |
885 | } | |
886 | ||
72f5cf0e | 887 | /* Using the objfile specified in OBJFILE, find the address for the |
9e35dae4 DJ |
888 | current thread's thread-local storage with offset OFFSET. */ |
889 | CORE_ADDR | |
890 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) | |
891 | { | |
892 | volatile CORE_ADDR addr = 0; | |
f0f9ff95 | 893 | struct target_ops *target = ¤t_target; |
9e35dae4 | 894 | |
f0f9ff95 | 895 | if (gdbarch_fetch_tls_load_module_address_p (target_gdbarch ())) |
9e35dae4 DJ |
896 | { |
897 | ptid_t ptid = inferior_ptid; | |
9e35dae4 | 898 | |
492d29ea | 899 | TRY |
9e35dae4 DJ |
900 | { |
901 | CORE_ADDR lm_addr; | |
902 | ||
903 | /* Fetch the load module address for this objfile. */ | |
f5656ead | 904 | lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch (), |
9e35dae4 | 905 | objfile); |
9e35dae4 | 906 | |
3e43a32a MS |
907 | addr = target->to_get_thread_local_address (target, ptid, |
908 | lm_addr, offset); | |
9e35dae4 DJ |
909 | } |
910 | /* If an error occurred, print TLS related messages here. Otherwise, | |
911 | throw the error to some higher catcher. */ | |
492d29ea | 912 | CATCH (ex, RETURN_MASK_ALL) |
9e35dae4 DJ |
913 | { |
914 | int objfile_is_library = (objfile->flags & OBJF_SHARED); | |
915 | ||
916 | switch (ex.error) | |
917 | { | |
918 | case TLS_NO_LIBRARY_SUPPORT_ERROR: | |
3e43a32a MS |
919 | error (_("Cannot find thread-local variables " |
920 | "in this thread library.")); | |
9e35dae4 DJ |
921 | break; |
922 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: | |
923 | if (objfile_is_library) | |
924 | error (_("Cannot find shared library `%s' in dynamic" | |
4262abfb | 925 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
926 | else |
927 | error (_("Cannot find executable file `%s' in dynamic" | |
4262abfb | 928 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
929 | break; |
930 | case TLS_NOT_ALLOCATED_YET_ERROR: | |
931 | if (objfile_is_library) | |
932 | error (_("The inferior has not yet allocated storage for" | |
933 | " thread-local variables in\n" | |
934 | "the shared library `%s'\n" | |
935 | "for %s"), | |
4262abfb | 936 | objfile_name (objfile), target_pid_to_str (ptid)); |
9e35dae4 DJ |
937 | else |
938 | error (_("The inferior has not yet allocated storage for" | |
939 | " thread-local variables in\n" | |
940 | "the executable `%s'\n" | |
941 | "for %s"), | |
4262abfb | 942 | objfile_name (objfile), target_pid_to_str (ptid)); |
9e35dae4 DJ |
943 | break; |
944 | case TLS_GENERIC_ERROR: | |
945 | if (objfile_is_library) | |
946 | error (_("Cannot find thread-local storage for %s, " | |
947 | "shared library %s:\n%s"), | |
948 | target_pid_to_str (ptid), | |
4262abfb | 949 | objfile_name (objfile), ex.message); |
9e35dae4 DJ |
950 | else |
951 | error (_("Cannot find thread-local storage for %s, " | |
952 | "executable file %s:\n%s"), | |
953 | target_pid_to_str (ptid), | |
4262abfb | 954 | objfile_name (objfile), ex.message); |
9e35dae4 DJ |
955 | break; |
956 | default: | |
957 | throw_exception (ex); | |
958 | break; | |
959 | } | |
960 | } | |
492d29ea | 961 | END_CATCH |
9e35dae4 DJ |
962 | } |
963 | /* It wouldn't be wrong here to try a gdbarch method, too; finding | |
964 | TLS is an ABI-specific thing. But we don't do that yet. */ | |
965 | else | |
966 | error (_("Cannot find thread-local variables on this target")); | |
967 | ||
968 | return addr; | |
969 | } | |
970 | ||
6be7b56e | 971 | const char * |
01cb8804 | 972 | target_xfer_status_to_string (enum target_xfer_status status) |
6be7b56e PA |
973 | { |
974 | #define CASE(X) case X: return #X | |
01cb8804 | 975 | switch (status) |
6be7b56e PA |
976 | { |
977 | CASE(TARGET_XFER_E_IO); | |
bc113b4e | 978 | CASE(TARGET_XFER_UNAVAILABLE); |
6be7b56e PA |
979 | default: |
980 | return "<unknown>"; | |
981 | } | |
982 | #undef CASE | |
983 | }; | |
984 | ||
985 | ||
c906108c SS |
986 | #undef MIN |
987 | #define MIN(A, B) (((A) <= (B)) ? (A) : (B)) | |
988 | ||
989 | /* target_read_string -- read a null terminated string, up to LEN bytes, | |
990 | from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful. | |
991 | Set *STRING to a pointer to malloc'd memory containing the data; the caller | |
992 | is responsible for freeing it. Return the number of bytes successfully | |
993 | read. */ | |
994 | ||
995 | int | |
fba45db2 | 996 | target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop) |
c906108c | 997 | { |
c2e8b827 | 998 | int tlen, offset, i; |
1b0ba102 | 999 | gdb_byte buf[4]; |
c906108c SS |
1000 | int errcode = 0; |
1001 | char *buffer; | |
1002 | int buffer_allocated; | |
1003 | char *bufptr; | |
1004 | unsigned int nbytes_read = 0; | |
1005 | ||
6217bf3e MS |
1006 | gdb_assert (string); |
1007 | ||
c906108c SS |
1008 | /* Small for testing. */ |
1009 | buffer_allocated = 4; | |
224c3ddb | 1010 | buffer = (char *) xmalloc (buffer_allocated); |
c906108c SS |
1011 | bufptr = buffer; |
1012 | ||
c906108c SS |
1013 | while (len > 0) |
1014 | { | |
1015 | tlen = MIN (len, 4 - (memaddr & 3)); | |
1016 | offset = memaddr & 3; | |
1017 | ||
1b0ba102 | 1018 | errcode = target_read_memory (memaddr & ~3, buf, sizeof buf); |
c906108c SS |
1019 | if (errcode != 0) |
1020 | { | |
1021 | /* The transfer request might have crossed the boundary to an | |
c378eb4e | 1022 | unallocated region of memory. Retry the transfer, requesting |
c906108c SS |
1023 | a single byte. */ |
1024 | tlen = 1; | |
1025 | offset = 0; | |
b8eb5af0 | 1026 | errcode = target_read_memory (memaddr, buf, 1); |
c906108c SS |
1027 | if (errcode != 0) |
1028 | goto done; | |
1029 | } | |
1030 | ||
1031 | if (bufptr - buffer + tlen > buffer_allocated) | |
1032 | { | |
1033 | unsigned int bytes; | |
5d502164 | 1034 | |
c906108c SS |
1035 | bytes = bufptr - buffer; |
1036 | buffer_allocated *= 2; | |
224c3ddb | 1037 | buffer = (char *) xrealloc (buffer, buffer_allocated); |
c906108c SS |
1038 | bufptr = buffer + bytes; |
1039 | } | |
1040 | ||
1041 | for (i = 0; i < tlen; i++) | |
1042 | { | |
1043 | *bufptr++ = buf[i + offset]; | |
1044 | if (buf[i + offset] == '\000') | |
1045 | { | |
1046 | nbytes_read += i + 1; | |
1047 | goto done; | |
1048 | } | |
1049 | } | |
1050 | ||
1051 | memaddr += tlen; | |
1052 | len -= tlen; | |
1053 | nbytes_read += tlen; | |
1054 | } | |
c5aa993b | 1055 | done: |
6217bf3e | 1056 | *string = buffer; |
c906108c SS |
1057 | if (errnop != NULL) |
1058 | *errnop = errcode; | |
c906108c SS |
1059 | return nbytes_read; |
1060 | } | |
1061 | ||
07b82ea5 PA |
1062 | struct target_section_table * |
1063 | target_get_section_table (struct target_ops *target) | |
1064 | { | |
7e35c012 | 1065 | return (*target->to_get_section_table) (target); |
07b82ea5 PA |
1066 | } |
1067 | ||
8db32d44 | 1068 | /* Find a section containing ADDR. */ |
07b82ea5 | 1069 | |
0542c86d | 1070 | struct target_section * |
8db32d44 AC |
1071 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
1072 | { | |
07b82ea5 | 1073 | struct target_section_table *table = target_get_section_table (target); |
0542c86d | 1074 | struct target_section *secp; |
07b82ea5 PA |
1075 | |
1076 | if (table == NULL) | |
1077 | return NULL; | |
1078 | ||
1079 | for (secp = table->sections; secp < table->sections_end; secp++) | |
8db32d44 AC |
1080 | { |
1081 | if (addr >= secp->addr && addr < secp->endaddr) | |
1082 | return secp; | |
1083 | } | |
1084 | return NULL; | |
1085 | } | |
1086 | ||
0fec99e8 PA |
1087 | |
1088 | /* Helper for the memory xfer routines. Checks the attributes of the | |
1089 | memory region of MEMADDR against the read or write being attempted. | |
1090 | If the access is permitted returns true, otherwise returns false. | |
1091 | REGION_P is an optional output parameter. If not-NULL, it is | |
1092 | filled with a pointer to the memory region of MEMADDR. REG_LEN | |
1093 | returns LEN trimmed to the end of the region. This is how much the | |
1094 | caller can continue requesting, if the access is permitted. A | |
1095 | single xfer request must not straddle memory region boundaries. */ | |
1096 | ||
1097 | static int | |
1098 | memory_xfer_check_region (gdb_byte *readbuf, const gdb_byte *writebuf, | |
1099 | ULONGEST memaddr, ULONGEST len, ULONGEST *reg_len, | |
1100 | struct mem_region **region_p) | |
1101 | { | |
1102 | struct mem_region *region; | |
1103 | ||
1104 | region = lookup_mem_region (memaddr); | |
1105 | ||
1106 | if (region_p != NULL) | |
1107 | *region_p = region; | |
1108 | ||
1109 | switch (region->attrib.mode) | |
1110 | { | |
1111 | case MEM_RO: | |
1112 | if (writebuf != NULL) | |
1113 | return 0; | |
1114 | break; | |
1115 | ||
1116 | case MEM_WO: | |
1117 | if (readbuf != NULL) | |
1118 | return 0; | |
1119 | break; | |
1120 | ||
1121 | case MEM_FLASH: | |
1122 | /* We only support writing to flash during "load" for now. */ | |
1123 | if (writebuf != NULL) | |
1124 | error (_("Writing to flash memory forbidden in this context")); | |
1125 | break; | |
1126 | ||
1127 | case MEM_NONE: | |
1128 | return 0; | |
1129 | } | |
1130 | ||
1131 | /* region->hi == 0 means there's no upper bound. */ | |
1132 | if (memaddr + len < region->hi || region->hi == 0) | |
1133 | *reg_len = len; | |
1134 | else | |
1135 | *reg_len = region->hi - memaddr; | |
1136 | ||
1137 | return 1; | |
1138 | } | |
1139 | ||
9f713294 YQ |
1140 | /* Read memory from more than one valid target. A core file, for |
1141 | instance, could have some of memory but delegate other bits to | |
1142 | the target below it. So, we must manually try all targets. */ | |
1143 | ||
cc9f16aa | 1144 | enum target_xfer_status |
17fde6d0 | 1145 | raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf, |
9b409511 YQ |
1146 | const gdb_byte *writebuf, ULONGEST memaddr, LONGEST len, |
1147 | ULONGEST *xfered_len) | |
9f713294 | 1148 | { |
9b409511 | 1149 | enum target_xfer_status res; |
9f713294 YQ |
1150 | |
1151 | do | |
1152 | { | |
1153 | res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 YQ |
1154 | readbuf, writebuf, memaddr, len, |
1155 | xfered_len); | |
1156 | if (res == TARGET_XFER_OK) | |
9f713294 YQ |
1157 | break; |
1158 | ||
633785ff | 1159 | /* Stop if the target reports that the memory is not available. */ |
bc113b4e | 1160 | if (res == TARGET_XFER_UNAVAILABLE) |
633785ff MM |
1161 | break; |
1162 | ||
9f713294 YQ |
1163 | /* We want to continue past core files to executables, but not |
1164 | past a running target's memory. */ | |
1165 | if (ops->to_has_all_memory (ops)) | |
1166 | break; | |
1167 | ||
1168 | ops = ops->beneath; | |
1169 | } | |
1170 | while (ops != NULL); | |
1171 | ||
0f26cec1 PA |
1172 | /* The cache works at the raw memory level. Make sure the cache |
1173 | gets updated with raw contents no matter what kind of memory | |
1174 | object was originally being written. Note we do write-through | |
1175 | first, so that if it fails, we don't write to the cache contents | |
1176 | that never made it to the target. */ | |
1177 | if (writebuf != NULL | |
1178 | && !ptid_equal (inferior_ptid, null_ptid) | |
1179 | && target_dcache_init_p () | |
1180 | && (stack_cache_enabled_p () || code_cache_enabled_p ())) | |
1181 | { | |
1182 | DCACHE *dcache = target_dcache_get (); | |
1183 | ||
1184 | /* Note that writing to an area of memory which wasn't present | |
1185 | in the cache doesn't cause it to be loaded in. */ | |
1186 | dcache_update (dcache, res, memaddr, writebuf, *xfered_len); | |
1187 | } | |
1188 | ||
9f713294 YQ |
1189 | return res; |
1190 | } | |
1191 | ||
7f79c47e DE |
1192 | /* Perform a partial memory transfer. |
1193 | For docs see target.h, to_xfer_partial. */ | |
cf7a04e8 | 1194 | |
9b409511 | 1195 | static enum target_xfer_status |
f0ba3972 | 1196 | memory_xfer_partial_1 (struct target_ops *ops, enum target_object object, |
17fde6d0 | 1197 | gdb_byte *readbuf, const gdb_byte *writebuf, ULONGEST memaddr, |
9b409511 | 1198 | ULONGEST len, ULONGEST *xfered_len) |
0779438d | 1199 | { |
9b409511 | 1200 | enum target_xfer_status res; |
0fec99e8 | 1201 | ULONGEST reg_len; |
cf7a04e8 | 1202 | struct mem_region *region; |
4e5d721f | 1203 | struct inferior *inf; |
cf7a04e8 | 1204 | |
07b82ea5 PA |
1205 | /* For accesses to unmapped overlay sections, read directly from |
1206 | files. Must do this first, as MEMADDR may need adjustment. */ | |
1207 | if (readbuf != NULL && overlay_debugging) | |
1208 | { | |
1209 | struct obj_section *section = find_pc_overlay (memaddr); | |
5d502164 | 1210 | |
07b82ea5 PA |
1211 | if (pc_in_unmapped_range (memaddr, section)) |
1212 | { | |
1213 | struct target_section_table *table | |
1214 | = target_get_section_table (ops); | |
1215 | const char *section_name = section->the_bfd_section->name; | |
5d502164 | 1216 | |
07b82ea5 PA |
1217 | memaddr = overlay_mapped_address (memaddr, section); |
1218 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 1219 | memaddr, len, xfered_len, |
07b82ea5 PA |
1220 | table->sections, |
1221 | table->sections_end, | |
1222 | section_name); | |
1223 | } | |
1224 | } | |
1225 | ||
1226 | /* Try the executable files, if "trust-readonly-sections" is set. */ | |
cf7a04e8 DJ |
1227 | if (readbuf != NULL && trust_readonly) |
1228 | { | |
0542c86d | 1229 | struct target_section *secp; |
07b82ea5 | 1230 | struct target_section_table *table; |
cf7a04e8 DJ |
1231 | |
1232 | secp = target_section_by_addr (ops, memaddr); | |
1233 | if (secp != NULL | |
2b2848e2 DE |
1234 | && (bfd_get_section_flags (secp->the_bfd_section->owner, |
1235 | secp->the_bfd_section) | |
cf7a04e8 | 1236 | & SEC_READONLY)) |
07b82ea5 PA |
1237 | { |
1238 | table = target_get_section_table (ops); | |
1239 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 1240 | memaddr, len, xfered_len, |
07b82ea5 PA |
1241 | table->sections, |
1242 | table->sections_end, | |
1243 | NULL); | |
1244 | } | |
98646950 UW |
1245 | } |
1246 | ||
cf7a04e8 | 1247 | /* Try GDB's internal data cache. */ |
cf7a04e8 | 1248 | |
0fec99e8 PA |
1249 | if (!memory_xfer_check_region (readbuf, writebuf, memaddr, len, ®_len, |
1250 | ®ion)) | |
1251 | return TARGET_XFER_E_IO; | |
cf7a04e8 | 1252 | |
6c95b8df | 1253 | if (!ptid_equal (inferior_ptid, null_ptid)) |
c9657e70 | 1254 | inf = find_inferior_ptid (inferior_ptid); |
6c95b8df PA |
1255 | else |
1256 | inf = NULL; | |
4e5d721f DE |
1257 | |
1258 | if (inf != NULL | |
0f26cec1 | 1259 | && readbuf != NULL |
2f4d8875 PA |
1260 | /* The dcache reads whole cache lines; that doesn't play well |
1261 | with reading from a trace buffer, because reading outside of | |
1262 | the collected memory range fails. */ | |
1263 | && get_traceframe_number () == -1 | |
4e5d721f | 1264 | && (region->attrib.cache |
29453a14 YQ |
1265 | || (stack_cache_enabled_p () && object == TARGET_OBJECT_STACK_MEMORY) |
1266 | || (code_cache_enabled_p () && object == TARGET_OBJECT_CODE_MEMORY))) | |
cf7a04e8 | 1267 | { |
2a2f9fe4 YQ |
1268 | DCACHE *dcache = target_dcache_get_or_init (); |
1269 | ||
0f26cec1 PA |
1270 | return dcache_read_memory_partial (ops, dcache, memaddr, readbuf, |
1271 | reg_len, xfered_len); | |
cf7a04e8 DJ |
1272 | } |
1273 | ||
1274 | /* If none of those methods found the memory we wanted, fall back | |
1275 | to a target partial transfer. Normally a single call to | |
1276 | to_xfer_partial is enough; if it doesn't recognize an object | |
1277 | it will call the to_xfer_partial of the next target down. | |
1278 | But for memory this won't do. Memory is the only target | |
9b409511 YQ |
1279 | object which can be read from more than one valid target. |
1280 | A core file, for instance, could have some of memory but | |
1281 | delegate other bits to the target below it. So, we must | |
1282 | manually try all targets. */ | |
1283 | ||
1284 | res = raw_memory_xfer_partial (ops, readbuf, writebuf, memaddr, reg_len, | |
1285 | xfered_len); | |
cf7a04e8 DJ |
1286 | |
1287 | /* If we still haven't got anything, return the last error. We | |
1288 | give up. */ | |
1289 | return res; | |
0779438d AC |
1290 | } |
1291 | ||
f0ba3972 PA |
1292 | /* Perform a partial memory transfer. For docs see target.h, |
1293 | to_xfer_partial. */ | |
1294 | ||
9b409511 | 1295 | static enum target_xfer_status |
f0ba3972 | 1296 | memory_xfer_partial (struct target_ops *ops, enum target_object object, |
9b409511 YQ |
1297 | gdb_byte *readbuf, const gdb_byte *writebuf, |
1298 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) | |
f0ba3972 | 1299 | { |
9b409511 | 1300 | enum target_xfer_status res; |
f0ba3972 PA |
1301 | |
1302 | /* Zero length requests are ok and require no work. */ | |
1303 | if (len == 0) | |
9b409511 | 1304 | return TARGET_XFER_EOF; |
f0ba3972 | 1305 | |
a738ea1d YQ |
1306 | memaddr = address_significant (target_gdbarch (), memaddr); |
1307 | ||
f0ba3972 PA |
1308 | /* Fill in READBUF with breakpoint shadows, or WRITEBUF with |
1309 | breakpoint insns, thus hiding out from higher layers whether | |
1310 | there are software breakpoints inserted in the code stream. */ | |
1311 | if (readbuf != NULL) | |
1312 | { | |
9b409511 YQ |
1313 | res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len, |
1314 | xfered_len); | |
f0ba3972 | 1315 | |
9b409511 | 1316 | if (res == TARGET_XFER_OK && !show_memory_breakpoints) |
c63528fc | 1317 | breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, *xfered_len); |
f0ba3972 PA |
1318 | } |
1319 | else | |
1320 | { | |
67c059c2 AB |
1321 | /* A large write request is likely to be partially satisfied |
1322 | by memory_xfer_partial_1. We will continually malloc | |
1323 | and free a copy of the entire write request for breakpoint | |
1324 | shadow handling even though we only end up writing a small | |
09c98b44 DB |
1325 | subset of it. Cap writes to a limit specified by the target |
1326 | to mitigate this. */ | |
325fac50 | 1327 | len = std::min (ops->to_get_memory_xfer_limit (ops), len); |
67c059c2 | 1328 | |
26fcd5d7 TT |
1329 | gdb::byte_vector buf (writebuf, writebuf + len); |
1330 | breakpoint_xfer_memory (NULL, buf.data (), writebuf, memaddr, len); | |
1331 | res = memory_xfer_partial_1 (ops, object, NULL, buf.data (), memaddr, len, | |
9b409511 | 1332 | xfered_len); |
f0ba3972 PA |
1333 | } |
1334 | ||
1335 | return res; | |
1336 | } | |
1337 | ||
cb85b21b TT |
1338 | scoped_restore_tmpl<int> |
1339 | make_scoped_restore_show_memory_breakpoints (int show) | |
8defab1a | 1340 | { |
cb85b21b | 1341 | return make_scoped_restore (&show_memory_breakpoints, show); |
8defab1a DJ |
1342 | } |
1343 | ||
7f79c47e DE |
1344 | /* For docs see target.h, to_xfer_partial. */ |
1345 | ||
9b409511 | 1346 | enum target_xfer_status |
27394598 AC |
1347 | target_xfer_partial (struct target_ops *ops, |
1348 | enum target_object object, const char *annex, | |
4ac248ca | 1349 | gdb_byte *readbuf, const gdb_byte *writebuf, |
9b409511 YQ |
1350 | ULONGEST offset, ULONGEST len, |
1351 | ULONGEST *xfered_len) | |
27394598 | 1352 | { |
9b409511 | 1353 | enum target_xfer_status retval; |
27394598 AC |
1354 | |
1355 | gdb_assert (ops->to_xfer_partial != NULL); | |
cf7a04e8 | 1356 | |
ce6d0892 YQ |
1357 | /* Transfer is done when LEN is zero. */ |
1358 | if (len == 0) | |
9b409511 | 1359 | return TARGET_XFER_EOF; |
ce6d0892 | 1360 | |
d914c394 SS |
1361 | if (writebuf && !may_write_memory) |
1362 | error (_("Writing to memory is not allowed (addr %s, len %s)"), | |
1363 | core_addr_to_string_nz (offset), plongest (len)); | |
1364 | ||
9b409511 YQ |
1365 | *xfered_len = 0; |
1366 | ||
cf7a04e8 DJ |
1367 | /* If this is a memory transfer, let the memory-specific code |
1368 | have a look at it instead. Memory transfers are more | |
1369 | complicated. */ | |
29453a14 YQ |
1370 | if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY |
1371 | || object == TARGET_OBJECT_CODE_MEMORY) | |
4e5d721f | 1372 | retval = memory_xfer_partial (ops, object, readbuf, |
9b409511 | 1373 | writebuf, offset, len, xfered_len); |
9f713294 | 1374 | else if (object == TARGET_OBJECT_RAW_MEMORY) |
cf7a04e8 | 1375 | { |
0fec99e8 PA |
1376 | /* Skip/avoid accessing the target if the memory region |
1377 | attributes block the access. Check this here instead of in | |
1378 | raw_memory_xfer_partial as otherwise we'd end up checking | |
1379 | this twice in the case of the memory_xfer_partial path is | |
1380 | taken; once before checking the dcache, and another in the | |
1381 | tail call to raw_memory_xfer_partial. */ | |
1382 | if (!memory_xfer_check_region (readbuf, writebuf, offset, len, &len, | |
1383 | NULL)) | |
1384 | return TARGET_XFER_E_IO; | |
1385 | ||
9f713294 | 1386 | /* Request the normal memory object from other layers. */ |
9b409511 YQ |
1387 | retval = raw_memory_xfer_partial (ops, readbuf, writebuf, offset, len, |
1388 | xfered_len); | |
cf7a04e8 | 1389 | } |
9f713294 YQ |
1390 | else |
1391 | retval = ops->to_xfer_partial (ops, object, annex, readbuf, | |
9b409511 | 1392 | writebuf, offset, len, xfered_len); |
cf7a04e8 | 1393 | |
27394598 AC |
1394 | if (targetdebug) |
1395 | { | |
1396 | const unsigned char *myaddr = NULL; | |
1397 | ||
1398 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a | 1399 | "%s:target_xfer_partial " |
9b409511 | 1400 | "(%d, %s, %s, %s, %s, %s) = %d, %s", |
27394598 AC |
1401 | ops->to_shortname, |
1402 | (int) object, | |
1403 | (annex ? annex : "(null)"), | |
53b71562 JB |
1404 | host_address_to_string (readbuf), |
1405 | host_address_to_string (writebuf), | |
0b1553bc | 1406 | core_addr_to_string_nz (offset), |
9b409511 YQ |
1407 | pulongest (len), retval, |
1408 | pulongest (*xfered_len)); | |
27394598 AC |
1409 | |
1410 | if (readbuf) | |
1411 | myaddr = readbuf; | |
1412 | if (writebuf) | |
1413 | myaddr = writebuf; | |
9b409511 | 1414 | if (retval == TARGET_XFER_OK && myaddr != NULL) |
27394598 AC |
1415 | { |
1416 | int i; | |
2bc416ba | 1417 | |
27394598 | 1418 | fputs_unfiltered (", bytes =", gdb_stdlog); |
9b409511 | 1419 | for (i = 0; i < *xfered_len; i++) |
27394598 | 1420 | { |
53b71562 | 1421 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1422 | { |
1423 | if (targetdebug < 2 && i > 0) | |
1424 | { | |
1425 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
1426 | break; | |
1427 | } | |
1428 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1429 | } | |
2bc416ba | 1430 | |
27394598 AC |
1431 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
1432 | } | |
1433 | } | |
2bc416ba | 1434 | |
27394598 AC |
1435 | fputc_unfiltered ('\n', gdb_stdlog); |
1436 | } | |
9b409511 YQ |
1437 | |
1438 | /* Check implementations of to_xfer_partial update *XFERED_LEN | |
1439 | properly. Do assertion after printing debug messages, so that we | |
1440 | can find more clues on assertion failure from debugging messages. */ | |
bc113b4e | 1441 | if (retval == TARGET_XFER_OK || retval == TARGET_XFER_UNAVAILABLE) |
9b409511 YQ |
1442 | gdb_assert (*xfered_len > 0); |
1443 | ||
27394598 AC |
1444 | return retval; |
1445 | } | |
1446 | ||
578d3588 PA |
1447 | /* Read LEN bytes of target memory at address MEMADDR, placing the |
1448 | results in GDB's memory at MYADDR. Returns either 0 for success or | |
d09f2c3f | 1449 | -1 if any error occurs. |
c906108c SS |
1450 | |
1451 | If an error occurs, no guarantee is made about the contents of the data at | |
1452 | MYADDR. In particular, the caller should not depend upon partial reads | |
1453 | filling the buffer with good data. There is no way for the caller to know | |
1454 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 | 1455 | deal with partial reads should call target_read (which will retry until |
c378eb4e | 1456 | it makes no progress, and then return how much was transferred). */ |
c906108c SS |
1457 | |
1458 | int | |
1b162304 | 1459 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
c906108c | 1460 | { |
c35b1492 PA |
1461 | /* Dispatch to the topmost target, not the flattened current_target. |
1462 | Memory accesses check target->to_has_(all_)memory, and the | |
1463 | flattened target doesn't inherit those. */ | |
1464 | if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1465 | myaddr, memaddr, len) == len) |
1466 | return 0; | |
0779438d | 1467 | else |
d09f2c3f | 1468 | return -1; |
c906108c SS |
1469 | } |
1470 | ||
721ec300 GB |
1471 | /* See target/target.h. */ |
1472 | ||
1473 | int | |
1474 | target_read_uint32 (CORE_ADDR memaddr, uint32_t *result) | |
1475 | { | |
1476 | gdb_byte buf[4]; | |
1477 | int r; | |
1478 | ||
1479 | r = target_read_memory (memaddr, buf, sizeof buf); | |
1480 | if (r != 0) | |
1481 | return r; | |
1482 | *result = extract_unsigned_integer (buf, sizeof buf, | |
1483 | gdbarch_byte_order (target_gdbarch ())); | |
1484 | return 0; | |
1485 | } | |
1486 | ||
aee4bf85 PA |
1487 | /* Like target_read_memory, but specify explicitly that this is a read |
1488 | from the target's raw memory. That is, this read bypasses the | |
1489 | dcache, breakpoint shadowing, etc. */ | |
1490 | ||
1491 | int | |
1492 | target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1493 | { | |
1494 | /* See comment in target_read_memory about why the request starts at | |
1495 | current_target.beneath. */ | |
1496 | if (target_read (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, | |
1497 | myaddr, memaddr, len) == len) | |
1498 | return 0; | |
1499 | else | |
d09f2c3f | 1500 | return -1; |
aee4bf85 PA |
1501 | } |
1502 | ||
4e5d721f DE |
1503 | /* Like target_read_memory, but specify explicitly that this is a read from |
1504 | the target's stack. This may trigger different cache behavior. */ | |
1505 | ||
1506 | int | |
45aa4659 | 1507 | target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
4e5d721f | 1508 | { |
aee4bf85 PA |
1509 | /* See comment in target_read_memory about why the request starts at |
1510 | current_target.beneath. */ | |
4e5d721f DE |
1511 | if (target_read (current_target.beneath, TARGET_OBJECT_STACK_MEMORY, NULL, |
1512 | myaddr, memaddr, len) == len) | |
1513 | return 0; | |
1514 | else | |
d09f2c3f | 1515 | return -1; |
4e5d721f DE |
1516 | } |
1517 | ||
29453a14 YQ |
1518 | /* Like target_read_memory, but specify explicitly that this is a read from |
1519 | the target's code. This may trigger different cache behavior. */ | |
1520 | ||
1521 | int | |
1522 | target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1523 | { | |
aee4bf85 PA |
1524 | /* See comment in target_read_memory about why the request starts at |
1525 | current_target.beneath. */ | |
29453a14 YQ |
1526 | if (target_read (current_target.beneath, TARGET_OBJECT_CODE_MEMORY, NULL, |
1527 | myaddr, memaddr, len) == len) | |
1528 | return 0; | |
1529 | else | |
d09f2c3f | 1530 | return -1; |
29453a14 YQ |
1531 | } |
1532 | ||
7f79c47e | 1533 | /* Write LEN bytes from MYADDR to target memory at address MEMADDR. |
d09f2c3f PA |
1534 | Returns either 0 for success or -1 if any error occurs. If an |
1535 | error occurs, no guarantee is made about how much data got written. | |
1536 | Callers that can deal with partial writes should call | |
1537 | target_write. */ | |
7f79c47e | 1538 | |
c906108c | 1539 | int |
45aa4659 | 1540 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
c906108c | 1541 | { |
aee4bf85 PA |
1542 | /* See comment in target_read_memory about why the request starts at |
1543 | current_target.beneath. */ | |
c35b1492 | 1544 | if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, |
cf7a04e8 DJ |
1545 | myaddr, memaddr, len) == len) |
1546 | return 0; | |
0779438d | 1547 | else |
d09f2c3f | 1548 | return -1; |
c906108c | 1549 | } |
c5aa993b | 1550 | |
f0ba3972 | 1551 | /* Write LEN bytes from MYADDR to target raw memory at address |
d09f2c3f PA |
1552 | MEMADDR. Returns either 0 for success or -1 if any error occurs. |
1553 | If an error occurs, no guarantee is made about how much data got | |
1554 | written. Callers that can deal with partial writes should call | |
1555 | target_write. */ | |
f0ba3972 PA |
1556 | |
1557 | int | |
45aa4659 | 1558 | target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
f0ba3972 | 1559 | { |
aee4bf85 PA |
1560 | /* See comment in target_read_memory about why the request starts at |
1561 | current_target.beneath. */ | |
f0ba3972 PA |
1562 | if (target_write (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, |
1563 | myaddr, memaddr, len) == len) | |
1564 | return 0; | |
1565 | else | |
d09f2c3f | 1566 | return -1; |
f0ba3972 PA |
1567 | } |
1568 | ||
fd79ecee DJ |
1569 | /* Fetch the target's memory map. */ |
1570 | ||
a664f67e | 1571 | std::vector<mem_region> |
fd79ecee DJ |
1572 | target_memory_map (void) |
1573 | { | |
a664f67e SM |
1574 | std::vector<mem_region> result |
1575 | = current_target.to_memory_map (¤t_target); | |
1576 | if (result.empty ()) | |
1577 | return result; | |
fd79ecee | 1578 | |
a664f67e | 1579 | std::sort (result.begin (), result.end ()); |
fd79ecee DJ |
1580 | |
1581 | /* Check that regions do not overlap. Simultaneously assign | |
1582 | a numbering for the "mem" commands to use to refer to | |
1583 | each region. */ | |
a664f67e SM |
1584 | mem_region *last_one = NULL; |
1585 | for (size_t ix = 0; ix < result.size (); ix++) | |
fd79ecee | 1586 | { |
a664f67e | 1587 | mem_region *this_one = &result[ix]; |
fd79ecee DJ |
1588 | this_one->number = ix; |
1589 | ||
a664f67e | 1590 | if (last_one != NULL && last_one->hi > this_one->lo) |
fd79ecee DJ |
1591 | { |
1592 | warning (_("Overlapping regions in memory map: ignoring")); | |
a664f67e | 1593 | return std::vector<mem_region> (); |
fd79ecee | 1594 | } |
a664f67e | 1595 | |
fd79ecee DJ |
1596 | last_one = this_one; |
1597 | } | |
1598 | ||
1599 | return result; | |
1600 | } | |
1601 | ||
a76d924d DJ |
1602 | void |
1603 | target_flash_erase (ULONGEST address, LONGEST length) | |
1604 | { | |
e8a6c6ac | 1605 | current_target.to_flash_erase (¤t_target, address, length); |
a76d924d DJ |
1606 | } |
1607 | ||
1608 | void | |
1609 | target_flash_done (void) | |
1610 | { | |
f6fb2925 | 1611 | current_target.to_flash_done (¤t_target); |
a76d924d DJ |
1612 | } |
1613 | ||
920d2a44 AC |
1614 | static void |
1615 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1616 | struct cmd_list_element *c, const char *value) | |
1617 | { | |
3e43a32a MS |
1618 | fprintf_filtered (file, |
1619 | _("Mode for reading from readonly sections is %s.\n"), | |
920d2a44 AC |
1620 | value); |
1621 | } | |
3a11626d | 1622 | |
7f79c47e | 1623 | /* Target vector read/write partial wrapper functions. */ |
0088c768 | 1624 | |
9b409511 | 1625 | static enum target_xfer_status |
1e3ff5ad AC |
1626 | target_read_partial (struct target_ops *ops, |
1627 | enum target_object object, | |
1b0ba102 | 1628 | const char *annex, gdb_byte *buf, |
9b409511 YQ |
1629 | ULONGEST offset, ULONGEST len, |
1630 | ULONGEST *xfered_len) | |
1e3ff5ad | 1631 | { |
9b409511 YQ |
1632 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len, |
1633 | xfered_len); | |
1e3ff5ad AC |
1634 | } |
1635 | ||
8a55ffb0 | 1636 | static enum target_xfer_status |
1e3ff5ad AC |
1637 | target_write_partial (struct target_ops *ops, |
1638 | enum target_object object, | |
1b0ba102 | 1639 | const char *annex, const gdb_byte *buf, |
9b409511 | 1640 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len) |
1e3ff5ad | 1641 | { |
9b409511 YQ |
1642 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len, |
1643 | xfered_len); | |
1e3ff5ad AC |
1644 | } |
1645 | ||
1646 | /* Wrappers to perform the full transfer. */ | |
7f79c47e DE |
1647 | |
1648 | /* For docs on target_read see target.h. */ | |
1649 | ||
1e3ff5ad AC |
1650 | LONGEST |
1651 | target_read (struct target_ops *ops, | |
1652 | enum target_object object, | |
1b0ba102 | 1653 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1654 | ULONGEST offset, LONGEST len) |
1655 | { | |
279a6fed | 1656 | LONGEST xfered_total = 0; |
d309493c SM |
1657 | int unit_size = 1; |
1658 | ||
1659 | /* If we are reading from a memory object, find the length of an addressable | |
1660 | unit for that architecture. */ | |
1661 | if (object == TARGET_OBJECT_MEMORY | |
1662 | || object == TARGET_OBJECT_STACK_MEMORY | |
1663 | || object == TARGET_OBJECT_CODE_MEMORY | |
1664 | || object == TARGET_OBJECT_RAW_MEMORY) | |
1665 | unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); | |
5d502164 | 1666 | |
279a6fed | 1667 | while (xfered_total < len) |
1e3ff5ad | 1668 | { |
279a6fed | 1669 | ULONGEST xfered_partial; |
9b409511 YQ |
1670 | enum target_xfer_status status; |
1671 | ||
1672 | status = target_read_partial (ops, object, annex, | |
d309493c | 1673 | buf + xfered_total * unit_size, |
279a6fed SM |
1674 | offset + xfered_total, len - xfered_total, |
1675 | &xfered_partial); | |
5d502164 | 1676 | |
1e3ff5ad | 1677 | /* Call an observer, notifying them of the xfer progress? */ |
9b409511 | 1678 | if (status == TARGET_XFER_EOF) |
279a6fed | 1679 | return xfered_total; |
9b409511 YQ |
1680 | else if (status == TARGET_XFER_OK) |
1681 | { | |
279a6fed | 1682 | xfered_total += xfered_partial; |
9b409511 YQ |
1683 | QUIT; |
1684 | } | |
1685 | else | |
279a6fed | 1686 | return TARGET_XFER_E_IO; |
9b409511 | 1687 | |
1e3ff5ad AC |
1688 | } |
1689 | return len; | |
1690 | } | |
1691 | ||
f1a507a1 JB |
1692 | /* Assuming that the entire [begin, end) range of memory cannot be |
1693 | read, try to read whatever subrange is possible to read. | |
1694 | ||
1695 | The function returns, in RESULT, either zero or one memory block. | |
1696 | If there's a readable subrange at the beginning, it is completely | |
1697 | read and returned. Any further readable subrange will not be read. | |
1698 | Otherwise, if there's a readable subrange at the end, it will be | |
1699 | completely read and returned. Any readable subranges before it | |
1700 | (obviously, not starting at the beginning), will be ignored. In | |
1701 | other cases -- either no readable subrange, or readable subrange(s) | |
1702 | that is neither at the beginning, or end, nothing is returned. | |
1703 | ||
1704 | The purpose of this function is to handle a read across a boundary | |
1705 | of accessible memory in a case when memory map is not available. | |
1706 | The above restrictions are fine for this case, but will give | |
1707 | incorrect results if the memory is 'patchy'. However, supporting | |
1708 | 'patchy' memory would require trying to read every single byte, | |
1709 | and it seems unacceptable solution. Explicit memory map is | |
1710 | recommended for this case -- and target_read_memory_robust will | |
1711 | take care of reading multiple ranges then. */ | |
8dedea02 VP |
1712 | |
1713 | static void | |
3e43a32a | 1714 | read_whatever_is_readable (struct target_ops *ops, |
279a6fed | 1715 | const ULONGEST begin, const ULONGEST end, |
d309493c | 1716 | int unit_size, |
386c8614 | 1717 | std::vector<memory_read_result> *result) |
d5086790 | 1718 | { |
8dedea02 VP |
1719 | ULONGEST current_begin = begin; |
1720 | ULONGEST current_end = end; | |
1721 | int forward; | |
9b409511 | 1722 | ULONGEST xfered_len; |
8dedea02 VP |
1723 | |
1724 | /* If we previously failed to read 1 byte, nothing can be done here. */ | |
1725 | if (end - begin <= 1) | |
386c8614 TT |
1726 | return; |
1727 | ||
1728 | gdb::unique_xmalloc_ptr<gdb_byte> buf ((gdb_byte *) xmalloc (end - begin)); | |
8dedea02 VP |
1729 | |
1730 | /* Check that either first or the last byte is readable, and give up | |
c378eb4e | 1731 | if not. This heuristic is meant to permit reading accessible memory |
8dedea02 VP |
1732 | at the boundary of accessible region. */ |
1733 | if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
386c8614 | 1734 | buf.get (), begin, 1, &xfered_len) == TARGET_XFER_OK) |
8dedea02 VP |
1735 | { |
1736 | forward = 1; | |
1737 | ++current_begin; | |
1738 | } | |
1739 | else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
386c8614 | 1740 | buf.get () + (end - begin) - 1, end - 1, 1, |
9b409511 | 1741 | &xfered_len) == TARGET_XFER_OK) |
8dedea02 VP |
1742 | { |
1743 | forward = 0; | |
1744 | --current_end; | |
1745 | } | |
1746 | else | |
386c8614 | 1747 | return; |
8dedea02 VP |
1748 | |
1749 | /* Loop invariant is that the [current_begin, current_end) was previously | |
1750 | found to be not readable as a whole. | |
1751 | ||
1752 | Note loop condition -- if the range has 1 byte, we can't divide the range | |
1753 | so there's no point trying further. */ | |
1754 | while (current_end - current_begin > 1) | |
1755 | { | |
1756 | ULONGEST first_half_begin, first_half_end; | |
1757 | ULONGEST second_half_begin, second_half_end; | |
1758 | LONGEST xfer; | |
279a6fed | 1759 | ULONGEST middle = current_begin + (current_end - current_begin) / 2; |
f1a507a1 | 1760 | |
8dedea02 VP |
1761 | if (forward) |
1762 | { | |
1763 | first_half_begin = current_begin; | |
1764 | first_half_end = middle; | |
1765 | second_half_begin = middle; | |
1766 | second_half_end = current_end; | |
1767 | } | |
1768 | else | |
1769 | { | |
1770 | first_half_begin = middle; | |
1771 | first_half_end = current_end; | |
1772 | second_half_begin = current_begin; | |
1773 | second_half_end = middle; | |
1774 | } | |
1775 | ||
1776 | xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
386c8614 | 1777 | buf.get () + (first_half_begin - begin) * unit_size, |
8dedea02 VP |
1778 | first_half_begin, |
1779 | first_half_end - first_half_begin); | |
1780 | ||
1781 | if (xfer == first_half_end - first_half_begin) | |
1782 | { | |
c378eb4e | 1783 | /* This half reads up fine. So, the error must be in the |
3e43a32a | 1784 | other half. */ |
8dedea02 VP |
1785 | current_begin = second_half_begin; |
1786 | current_end = second_half_end; | |
1787 | } | |
1788 | else | |
1789 | { | |
c378eb4e | 1790 | /* This half is not readable. Because we've tried one byte, we |
279a6fed | 1791 | know some part of this half if actually readable. Go to the next |
8dedea02 VP |
1792 | iteration to divide again and try to read. |
1793 | ||
1794 | We don't handle the other half, because this function only tries | |
1795 | to read a single readable subrange. */ | |
1796 | current_begin = first_half_begin; | |
1797 | current_end = first_half_end; | |
1798 | } | |
1799 | } | |
1800 | ||
1801 | if (forward) | |
1802 | { | |
1803 | /* The [begin, current_begin) range has been read. */ | |
386c8614 | 1804 | result->emplace_back (begin, current_end, std::move (buf)); |
8dedea02 VP |
1805 | } |
1806 | else | |
1807 | { | |
1808 | /* The [current_end, end) range has been read. */ | |
279a6fed | 1809 | LONGEST region_len = end - current_end; |
f1a507a1 | 1810 | |
386c8614 TT |
1811 | gdb::unique_xmalloc_ptr<gdb_byte> data |
1812 | ((gdb_byte *) xmalloc (region_len * unit_size)); | |
1813 | memcpy (data.get (), buf.get () + (current_end - begin) * unit_size, | |
d309493c | 1814 | region_len * unit_size); |
386c8614 | 1815 | result->emplace_back (current_end, end, std::move (data)); |
8dedea02 | 1816 | } |
8dedea02 VP |
1817 | } |
1818 | ||
386c8614 | 1819 | std::vector<memory_read_result> |
279a6fed SM |
1820 | read_memory_robust (struct target_ops *ops, |
1821 | const ULONGEST offset, const LONGEST len) | |
8dedea02 | 1822 | { |
386c8614 | 1823 | std::vector<memory_read_result> result; |
d309493c | 1824 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
8dedea02 | 1825 | |
279a6fed SM |
1826 | LONGEST xfered_total = 0; |
1827 | while (xfered_total < len) | |
d5086790 | 1828 | { |
279a6fed SM |
1829 | struct mem_region *region = lookup_mem_region (offset + xfered_total); |
1830 | LONGEST region_len; | |
5d502164 | 1831 | |
8dedea02 VP |
1832 | /* If there is no explicit region, a fake one should be created. */ |
1833 | gdb_assert (region); | |
1834 | ||
1835 | if (region->hi == 0) | |
279a6fed | 1836 | region_len = len - xfered_total; |
8dedea02 | 1837 | else |
279a6fed | 1838 | region_len = region->hi - offset; |
8dedea02 VP |
1839 | |
1840 | if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO) | |
d5086790 | 1841 | { |
c378eb4e | 1842 | /* Cannot read this region. Note that we can end up here only |
8dedea02 VP |
1843 | if the region is explicitly marked inaccessible, or |
1844 | 'inaccessible-by-default' is in effect. */ | |
279a6fed | 1845 | xfered_total += region_len; |
8dedea02 VP |
1846 | } |
1847 | else | |
1848 | { | |
325fac50 | 1849 | LONGEST to_read = std::min (len - xfered_total, region_len); |
386c8614 TT |
1850 | gdb::unique_xmalloc_ptr<gdb_byte> buffer |
1851 | ((gdb_byte *) xmalloc (to_read * unit_size)); | |
8dedea02 | 1852 | |
279a6fed | 1853 | LONGEST xfered_partial = |
386c8614 | 1854 | target_read (ops, TARGET_OBJECT_MEMORY, NULL, buffer.get (), |
279a6fed | 1855 | offset + xfered_total, to_read); |
8dedea02 | 1856 | /* Call an observer, notifying them of the xfer progress? */ |
279a6fed | 1857 | if (xfered_partial <= 0) |
d5086790 | 1858 | { |
c378eb4e | 1859 | /* Got an error reading full chunk. See if maybe we can read |
8dedea02 | 1860 | some subrange. */ |
e084c964 DB |
1861 | read_whatever_is_readable (ops, offset + xfered_total, |
1862 | offset + xfered_total + to_read, | |
1863 | unit_size, &result); | |
279a6fed | 1864 | xfered_total += to_read; |
d5086790 | 1865 | } |
8dedea02 VP |
1866 | else |
1867 | { | |
386c8614 TT |
1868 | result.emplace_back (offset + xfered_total, |
1869 | offset + xfered_total + xfered_partial, | |
1870 | std::move (buffer)); | |
279a6fed | 1871 | xfered_total += xfered_partial; |
8dedea02 VP |
1872 | } |
1873 | QUIT; | |
d5086790 | 1874 | } |
d5086790 | 1875 | } |
9d78f827 | 1876 | |
8dedea02 | 1877 | return result; |
d5086790 VP |
1878 | } |
1879 | ||
8dedea02 | 1880 | |
cf7a04e8 DJ |
1881 | /* An alternative to target_write with progress callbacks. */ |
1882 | ||
1e3ff5ad | 1883 | LONGEST |
cf7a04e8 DJ |
1884 | target_write_with_progress (struct target_ops *ops, |
1885 | enum target_object object, | |
1886 | const char *annex, const gdb_byte *buf, | |
1887 | ULONGEST offset, LONGEST len, | |
1888 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad | 1889 | { |
279a6fed | 1890 | LONGEST xfered_total = 0; |
d309493c SM |
1891 | int unit_size = 1; |
1892 | ||
1893 | /* If we are writing to a memory object, find the length of an addressable | |
1894 | unit for that architecture. */ | |
1895 | if (object == TARGET_OBJECT_MEMORY | |
1896 | || object == TARGET_OBJECT_STACK_MEMORY | |
1897 | || object == TARGET_OBJECT_CODE_MEMORY | |
1898 | || object == TARGET_OBJECT_RAW_MEMORY) | |
1899 | unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); | |
a76d924d DJ |
1900 | |
1901 | /* Give the progress callback a chance to set up. */ | |
1902 | if (progress) | |
1903 | (*progress) (0, baton); | |
1904 | ||
279a6fed | 1905 | while (xfered_total < len) |
1e3ff5ad | 1906 | { |
279a6fed | 1907 | ULONGEST xfered_partial; |
9b409511 YQ |
1908 | enum target_xfer_status status; |
1909 | ||
1910 | status = target_write_partial (ops, object, annex, | |
d309493c | 1911 | buf + xfered_total * unit_size, |
279a6fed SM |
1912 | offset + xfered_total, len - xfered_total, |
1913 | &xfered_partial); | |
cf7a04e8 | 1914 | |
5c328c05 | 1915 | if (status != TARGET_XFER_OK) |
279a6fed | 1916 | return status == TARGET_XFER_EOF ? xfered_total : TARGET_XFER_E_IO; |
cf7a04e8 DJ |
1917 | |
1918 | if (progress) | |
279a6fed | 1919 | (*progress) (xfered_partial, baton); |
cf7a04e8 | 1920 | |
279a6fed | 1921 | xfered_total += xfered_partial; |
1e3ff5ad AC |
1922 | QUIT; |
1923 | } | |
1924 | return len; | |
1925 | } | |
1926 | ||
7f79c47e DE |
1927 | /* For docs on target_write see target.h. */ |
1928 | ||
cf7a04e8 DJ |
1929 | LONGEST |
1930 | target_write (struct target_ops *ops, | |
1931 | enum target_object object, | |
1932 | const char *annex, const gdb_byte *buf, | |
1933 | ULONGEST offset, LONGEST len) | |
1934 | { | |
1935 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
1936 | NULL, NULL); | |
1937 | } | |
1938 | ||
159f81f3 DJ |
1939 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
1940 | the size of the transferred data. PADDING additional bytes are | |
1941 | available in *BUF_P. This is a helper function for | |
1942 | target_read_alloc; see the declaration of that function for more | |
1943 | information. */ | |
13547ab6 | 1944 | |
159f81f3 DJ |
1945 | static LONGEST |
1946 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, | |
1947 | const char *annex, gdb_byte **buf_p, int padding) | |
13547ab6 DJ |
1948 | { |
1949 | size_t buf_alloc, buf_pos; | |
1950 | gdb_byte *buf; | |
13547ab6 DJ |
1951 | |
1952 | /* This function does not have a length parameter; it reads the | |
1953 | entire OBJECT). Also, it doesn't support objects fetched partly | |
1954 | from one target and partly from another (in a different stratum, | |
1955 | e.g. a core file and an executable). Both reasons make it | |
1956 | unsuitable for reading memory. */ | |
1957 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
1958 | ||
1959 | /* Start by reading up to 4K at a time. The target will throttle | |
1960 | this number down if necessary. */ | |
1961 | buf_alloc = 4096; | |
224c3ddb | 1962 | buf = (gdb_byte *) xmalloc (buf_alloc); |
13547ab6 DJ |
1963 | buf_pos = 0; |
1964 | while (1) | |
1965 | { | |
9b409511 YQ |
1966 | ULONGEST xfered_len; |
1967 | enum target_xfer_status status; | |
1968 | ||
1969 | status = target_read_partial (ops, object, annex, &buf[buf_pos], | |
1970 | buf_pos, buf_alloc - buf_pos - padding, | |
1971 | &xfered_len); | |
1972 | ||
1973 | if (status == TARGET_XFER_EOF) | |
13547ab6 DJ |
1974 | { |
1975 | /* Read all there was. */ | |
1976 | if (buf_pos == 0) | |
1977 | xfree (buf); | |
1978 | else | |
1979 | *buf_p = buf; | |
1980 | return buf_pos; | |
1981 | } | |
9b409511 YQ |
1982 | else if (status != TARGET_XFER_OK) |
1983 | { | |
1984 | /* An error occurred. */ | |
1985 | xfree (buf); | |
1986 | return TARGET_XFER_E_IO; | |
1987 | } | |
13547ab6 | 1988 | |
9b409511 | 1989 | buf_pos += xfered_len; |
13547ab6 DJ |
1990 | |
1991 | /* If the buffer is filling up, expand it. */ | |
1992 | if (buf_alloc < buf_pos * 2) | |
1993 | { | |
1994 | buf_alloc *= 2; | |
224c3ddb | 1995 | buf = (gdb_byte *) xrealloc (buf, buf_alloc); |
13547ab6 DJ |
1996 | } |
1997 | ||
1998 | QUIT; | |
1999 | } | |
2000 | } | |
2001 | ||
159f81f3 DJ |
2002 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
2003 | the size of the transferred data. See the declaration in "target.h" | |
2004 | function for more information about the return value. */ | |
2005 | ||
2006 | LONGEST | |
2007 | target_read_alloc (struct target_ops *ops, enum target_object object, | |
2008 | const char *annex, gdb_byte **buf_p) | |
2009 | { | |
2010 | return target_read_alloc_1 (ops, object, annex, buf_p, 0); | |
2011 | } | |
2012 | ||
b7b030ad | 2013 | /* See target.h. */ |
159f81f3 | 2014 | |
b7b030ad | 2015 | gdb::unique_xmalloc_ptr<char> |
159f81f3 DJ |
2016 | target_read_stralloc (struct target_ops *ops, enum target_object object, |
2017 | const char *annex) | |
2018 | { | |
39086a0e PA |
2019 | gdb_byte *buffer; |
2020 | char *bufstr; | |
7313baad | 2021 | LONGEST i, transferred; |
159f81f3 | 2022 | |
39086a0e PA |
2023 | transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1); |
2024 | bufstr = (char *) buffer; | |
159f81f3 DJ |
2025 | |
2026 | if (transferred < 0) | |
2027 | return NULL; | |
2028 | ||
2029 | if (transferred == 0) | |
b7b030ad | 2030 | return gdb::unique_xmalloc_ptr<char> (xstrdup ("")); |
159f81f3 | 2031 | |
39086a0e | 2032 | bufstr[transferred] = 0; |
7313baad UW |
2033 | |
2034 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
39086a0e PA |
2035 | for (i = strlen (bufstr); i < transferred; i++) |
2036 | if (bufstr[i] != 0) | |
7313baad UW |
2037 | { |
2038 | warning (_("target object %d, annex %s, " | |
2039 | "contained unexpected null characters"), | |
2040 | (int) object, annex ? annex : "(none)"); | |
2041 | break; | |
2042 | } | |
159f81f3 | 2043 | |
b7b030ad | 2044 | return gdb::unique_xmalloc_ptr<char> (bufstr); |
159f81f3 DJ |
2045 | } |
2046 | ||
b6591e8b AC |
2047 | /* Memory transfer methods. */ |
2048 | ||
2049 | void | |
1b0ba102 | 2050 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
2051 | LONGEST len) |
2052 | { | |
07b82ea5 PA |
2053 | /* This method is used to read from an alternate, non-current |
2054 | target. This read must bypass the overlay support (as symbols | |
2055 | don't match this target), and GDB's internal cache (wrong cache | |
2056 | for this target). */ | |
2057 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) | |
b6591e8b | 2058 | != len) |
578d3588 | 2059 | memory_error (TARGET_XFER_E_IO, addr); |
b6591e8b AC |
2060 | } |
2061 | ||
2062 | ULONGEST | |
5d502164 MS |
2063 | get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr, |
2064 | int len, enum bfd_endian byte_order) | |
b6591e8b | 2065 | { |
f6519ebc | 2066 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
2067 | |
2068 | gdb_assert (len <= sizeof (buf)); | |
2069 | get_target_memory (ops, addr, buf, len); | |
e17a4113 | 2070 | return extract_unsigned_integer (buf, len, byte_order); |
b6591e8b AC |
2071 | } |
2072 | ||
3db08215 MM |
2073 | /* See target.h. */ |
2074 | ||
d914c394 SS |
2075 | int |
2076 | target_insert_breakpoint (struct gdbarch *gdbarch, | |
2077 | struct bp_target_info *bp_tgt) | |
2078 | { | |
2079 | if (!may_insert_breakpoints) | |
2080 | { | |
2081 | warning (_("May not insert breakpoints")); | |
2082 | return 1; | |
2083 | } | |
2084 | ||
6b84065d TT |
2085 | return current_target.to_insert_breakpoint (¤t_target, |
2086 | gdbarch, bp_tgt); | |
d914c394 SS |
2087 | } |
2088 | ||
3db08215 MM |
2089 | /* See target.h. */ |
2090 | ||
d914c394 | 2091 | int |
6b84065d | 2092 | target_remove_breakpoint (struct gdbarch *gdbarch, |
73971819 PA |
2093 | struct bp_target_info *bp_tgt, |
2094 | enum remove_bp_reason reason) | |
d914c394 SS |
2095 | { |
2096 | /* This is kind of a weird case to handle, but the permission might | |
2097 | have been changed after breakpoints were inserted - in which case | |
2098 | we should just take the user literally and assume that any | |
2099 | breakpoints should be left in place. */ | |
2100 | if (!may_insert_breakpoints) | |
2101 | { | |
2102 | warning (_("May not remove breakpoints")); | |
2103 | return 1; | |
2104 | } | |
2105 | ||
6b84065d | 2106 | return current_target.to_remove_breakpoint (¤t_target, |
73971819 | 2107 | gdbarch, bp_tgt, reason); |
d914c394 SS |
2108 | } |
2109 | ||
c906108c | 2110 | static void |
1d12d88f | 2111 | info_target_command (const char *args, int from_tty) |
c906108c SS |
2112 | { |
2113 | struct target_ops *t; | |
c906108c | 2114 | int has_all_mem = 0; |
c5aa993b | 2115 | |
c906108c | 2116 | if (symfile_objfile != NULL) |
4262abfb JK |
2117 | printf_unfiltered (_("Symbols from \"%s\".\n"), |
2118 | objfile_name (symfile_objfile)); | |
c906108c | 2119 | |
258b763a | 2120 | for (t = target_stack; t != NULL; t = t->beneath) |
c906108c | 2121 | { |
c35b1492 | 2122 | if (!(*t->to_has_memory) (t)) |
c906108c SS |
2123 | continue; |
2124 | ||
c5aa993b | 2125 | if ((int) (t->to_stratum) <= (int) dummy_stratum) |
c906108c SS |
2126 | continue; |
2127 | if (has_all_mem) | |
3e43a32a MS |
2128 | printf_unfiltered (_("\tWhile running this, " |
2129 | "GDB does not access memory from...\n")); | |
c5aa993b JM |
2130 | printf_unfiltered ("%s:\n", t->to_longname); |
2131 | (t->to_files_info) (t); | |
c35b1492 | 2132 | has_all_mem = (*t->to_has_all_memory) (t); |
c906108c SS |
2133 | } |
2134 | } | |
2135 | ||
fd79ecee DJ |
2136 | /* This function is called before any new inferior is created, e.g. |
2137 | by running a program, attaching, or connecting to a target. | |
2138 | It cleans up any state from previous invocations which might | |
2139 | change between runs. This is a subset of what target_preopen | |
2140 | resets (things which might change between targets). */ | |
2141 | ||
2142 | void | |
2143 | target_pre_inferior (int from_tty) | |
2144 | { | |
c378eb4e | 2145 | /* Clear out solib state. Otherwise the solib state of the previous |
b9db4ced | 2146 | inferior might have survived and is entirely wrong for the new |
c378eb4e | 2147 | target. This has been observed on GNU/Linux using glibc 2.3. How |
b9db4ced UW |
2148 | to reproduce: |
2149 | ||
2150 | bash$ ./foo& | |
2151 | [1] 4711 | |
2152 | bash$ ./foo& | |
2153 | [1] 4712 | |
2154 | bash$ gdb ./foo | |
2155 | [...] | |
2156 | (gdb) attach 4711 | |
2157 | (gdb) detach | |
2158 | (gdb) attach 4712 | |
2159 | Cannot access memory at address 0xdeadbeef | |
2160 | */ | |
b9db4ced | 2161 | |
50c71eaf PA |
2162 | /* In some OSs, the shared library list is the same/global/shared |
2163 | across inferiors. If code is shared between processes, so are | |
2164 | memory regions and features. */ | |
f5656ead | 2165 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
50c71eaf PA |
2166 | { |
2167 | no_shared_libraries (NULL, from_tty); | |
2168 | ||
2169 | invalidate_target_mem_regions (); | |
424163ea | 2170 | |
50c71eaf PA |
2171 | target_clear_description (); |
2172 | } | |
8ffcbaaf | 2173 | |
e9756d52 PP |
2174 | /* attach_flag may be set if the previous process associated with |
2175 | the inferior was attached to. */ | |
2176 | current_inferior ()->attach_flag = 0; | |
2177 | ||
5d5658a1 PA |
2178 | current_inferior ()->highest_thread_num = 0; |
2179 | ||
8ffcbaaf | 2180 | agent_capability_invalidate (); |
fd79ecee DJ |
2181 | } |
2182 | ||
b8fa0bfa PA |
2183 | /* Callback for iterate_over_inferiors. Gets rid of the given |
2184 | inferior. */ | |
2185 | ||
2186 | static int | |
2187 | dispose_inferior (struct inferior *inf, void *args) | |
2188 | { | |
2189 | struct thread_info *thread; | |
2190 | ||
2191 | thread = any_thread_of_process (inf->pid); | |
2192 | if (thread) | |
2193 | { | |
2194 | switch_to_thread (thread->ptid); | |
2195 | ||
2196 | /* Core inferiors actually should be detached, not killed. */ | |
2197 | if (target_has_execution) | |
2198 | target_kill (); | |
2199 | else | |
6e1e1966 | 2200 | target_detach (inf, 0); |
b8fa0bfa PA |
2201 | } |
2202 | ||
2203 | return 0; | |
2204 | } | |
2205 | ||
c906108c SS |
2206 | /* This is to be called by the open routine before it does |
2207 | anything. */ | |
2208 | ||
2209 | void | |
fba45db2 | 2210 | target_preopen (int from_tty) |
c906108c | 2211 | { |
c5aa993b | 2212 | dont_repeat (); |
c906108c | 2213 | |
b8fa0bfa | 2214 | if (have_inferiors ()) |
c5aa993b | 2215 | { |
adf40b2e | 2216 | if (!from_tty |
b8fa0bfa PA |
2217 | || !have_live_inferiors () |
2218 | || query (_("A program is being debugged already. Kill it? "))) | |
2219 | iterate_over_inferiors (dispose_inferior, NULL); | |
c906108c | 2220 | else |
8a3fe4f8 | 2221 | error (_("Program not killed.")); |
c906108c SS |
2222 | } |
2223 | ||
2224 | /* Calling target_kill may remove the target from the stack. But if | |
2225 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
2226 | /* Leave the exec target, though. The user may be switching from a |
2227 | live process to a core of the same program. */ | |
460014f5 | 2228 | pop_all_targets_above (file_stratum); |
fd79ecee DJ |
2229 | |
2230 | target_pre_inferior (from_tty); | |
c906108c SS |
2231 | } |
2232 | ||
6bd6f3b6 | 2233 | /* See target.h. */ |
c906108c SS |
2234 | |
2235 | void | |
6e1e1966 | 2236 | target_detach (inferior *inf, int from_tty) |
c906108c | 2237 | { |
6e1e1966 SM |
2238 | /* As long as some to_detach implementations rely on the current_inferior |
2239 | (either directly, or indirectly, like through target_gdbarch or by | |
2240 | reading memory), INF needs to be the current inferior. When that | |
2241 | requirement will become no longer true, then we can remove this | |
2242 | assertion. */ | |
2243 | gdb_assert (inf == current_inferior ()); | |
2244 | ||
f5656ead | 2245 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
2246 | /* Don't remove global breakpoints here. They're removed on |
2247 | disconnection from the target. */ | |
2248 | ; | |
2249 | else | |
2250 | /* If we're in breakpoints-always-inserted mode, have to remove | |
2251 | them before detaching. */ | |
dfd4cc63 | 2252 | remove_breakpoints_pid (ptid_get_pid (inferior_ptid)); |
74960c60 | 2253 | |
24291992 PA |
2254 | prepare_for_detach (); |
2255 | ||
6e1e1966 | 2256 | current_target.to_detach (¤t_target, inf, from_tty); |
c906108c SS |
2257 | } |
2258 | ||
6ad8ae5c | 2259 | void |
fee354ee | 2260 | target_disconnect (const char *args, int from_tty) |
6ad8ae5c | 2261 | { |
50c71eaf PA |
2262 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
2263 | are global across processes, we have to remove them before | |
2264 | disconnecting. */ | |
74960c60 VP |
2265 | remove_breakpoints (); |
2266 | ||
86a0854a | 2267 | current_target.to_disconnect (¤t_target, args, from_tty); |
6ad8ae5c DJ |
2268 | } |
2269 | ||
f2b9e3df SDJ |
2270 | /* See target/target.h. */ |
2271 | ||
117de6a9 | 2272 | ptid_t |
47608cb1 | 2273 | target_wait (ptid_t ptid, struct target_waitstatus *status, int options) |
117de6a9 | 2274 | { |
a7068b60 | 2275 | return (current_target.to_wait) (¤t_target, ptid, status, options); |
117de6a9 PA |
2276 | } |
2277 | ||
0b333c5e PA |
2278 | /* See target.h. */ |
2279 | ||
2280 | ptid_t | |
2281 | default_target_wait (struct target_ops *ops, | |
2282 | ptid_t ptid, struct target_waitstatus *status, | |
2283 | int options) | |
2284 | { | |
2285 | status->kind = TARGET_WAITKIND_IGNORE; | |
2286 | return minus_one_ptid; | |
2287 | } | |
2288 | ||
7a114964 | 2289 | const char * |
117de6a9 PA |
2290 | target_pid_to_str (ptid_t ptid) |
2291 | { | |
770234d3 | 2292 | return (*current_target.to_pid_to_str) (¤t_target, ptid); |
117de6a9 PA |
2293 | } |
2294 | ||
73ede765 | 2295 | const char * |
4694da01 TT |
2296 | target_thread_name (struct thread_info *info) |
2297 | { | |
825828fc | 2298 | return current_target.to_thread_name (¤t_target, info); |
4694da01 TT |
2299 | } |
2300 | ||
e04ee09e KB |
2301 | struct thread_info * |
2302 | target_thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
2303 | int handle_len, | |
2304 | struct inferior *inf) | |
2305 | { | |
2306 | return current_target.to_thread_handle_to_thread_info | |
2307 | (¤t_target, thread_handle, handle_len, inf); | |
2308 | } | |
2309 | ||
e1ac3328 | 2310 | void |
2ea28649 | 2311 | target_resume (ptid_t ptid, int step, enum gdb_signal signal) |
e1ac3328 | 2312 | { |
4e5d721f | 2313 | target_dcache_invalidate (); |
28439f5e | 2314 | |
6b84065d | 2315 | current_target.to_resume (¤t_target, ptid, step, signal); |
28439f5e | 2316 | |
6b84065d | 2317 | registers_changed_ptid (ptid); |
251bde03 PA |
2318 | /* We only set the internal executing state here. The user/frontend |
2319 | running state is set at a higher level. */ | |
6b84065d | 2320 | set_executing (ptid, 1); |
6b84065d | 2321 | clear_inline_frame_state (ptid); |
e1ac3328 | 2322 | } |
2455069d | 2323 | |
85ad3aaf PA |
2324 | /* If true, target_commit_resume is a nop. */ |
2325 | static int defer_target_commit_resume; | |
2326 | ||
2327 | /* See target.h. */ | |
2328 | ||
2329 | void | |
2330 | target_commit_resume (void) | |
2331 | { | |
85ad3aaf PA |
2332 | if (defer_target_commit_resume) |
2333 | return; | |
2334 | ||
2335 | current_target.to_commit_resume (¤t_target); | |
2336 | } | |
2337 | ||
2338 | /* See target.h. */ | |
2339 | ||
a9bc57b9 TT |
2340 | scoped_restore_tmpl<int> |
2341 | make_scoped_defer_target_commit_resume () | |
85ad3aaf | 2342 | { |
a9bc57b9 | 2343 | return make_scoped_restore (&defer_target_commit_resume, 1); |
85ad3aaf PA |
2344 | } |
2345 | ||
2455069d UW |
2346 | void |
2347 | target_pass_signals (int numsigs, unsigned char *pass_signals) | |
2348 | { | |
035cad7f | 2349 | (*current_target.to_pass_signals) (¤t_target, numsigs, pass_signals); |
2455069d UW |
2350 | } |
2351 | ||
9b224c5e PA |
2352 | void |
2353 | target_program_signals (int numsigs, unsigned char *program_signals) | |
2354 | { | |
7d4f8efa TT |
2355 | (*current_target.to_program_signals) (¤t_target, |
2356 | numsigs, program_signals); | |
9b224c5e PA |
2357 | } |
2358 | ||
098dba18 TT |
2359 | static int |
2360 | default_follow_fork (struct target_ops *self, int follow_child, | |
2361 | int detach_fork) | |
2362 | { | |
2363 | /* Some target returned a fork event, but did not know how to follow it. */ | |
2364 | internal_error (__FILE__, __LINE__, | |
2365 | _("could not find a target to follow fork")); | |
2366 | } | |
2367 | ||
ee057212 DJ |
2368 | /* Look through the list of possible targets for a target that can |
2369 | follow forks. */ | |
2370 | ||
2371 | int | |
07107ca6 | 2372 | target_follow_fork (int follow_child, int detach_fork) |
ee057212 | 2373 | { |
a7068b60 TT |
2374 | return current_target.to_follow_fork (¤t_target, |
2375 | follow_child, detach_fork); | |
ee057212 DJ |
2376 | } |
2377 | ||
94585166 DB |
2378 | /* Target wrapper for follow exec hook. */ |
2379 | ||
2380 | void | |
2381 | target_follow_exec (struct inferior *inf, char *execd_pathname) | |
2382 | { | |
2383 | current_target.to_follow_exec (¤t_target, inf, execd_pathname); | |
2384 | } | |
2385 | ||
8d657035 TT |
2386 | static void |
2387 | default_mourn_inferior (struct target_ops *self) | |
2388 | { | |
2389 | internal_error (__FILE__, __LINE__, | |
2390 | _("could not find a target to follow mourn inferior")); | |
2391 | } | |
2392 | ||
136d6dae | 2393 | void |
bc1e6c81 | 2394 | target_mourn_inferior (ptid_t ptid) |
136d6dae | 2395 | { |
bc1e6c81 | 2396 | gdb_assert (ptid_equal (ptid, inferior_ptid)); |
8d657035 | 2397 | current_target.to_mourn_inferior (¤t_target); |
136d6dae | 2398 | |
8d657035 TT |
2399 | /* We no longer need to keep handles on any of the object files. |
2400 | Make sure to release them to avoid unnecessarily locking any | |
2401 | of them while we're not actually debugging. */ | |
2402 | bfd_cache_close_all (); | |
136d6dae VP |
2403 | } |
2404 | ||
424163ea DJ |
2405 | /* Look for a target which can describe architectural features, starting |
2406 | from TARGET. If we find one, return its description. */ | |
2407 | ||
2408 | const struct target_desc * | |
2409 | target_read_description (struct target_ops *target) | |
2410 | { | |
2117c711 | 2411 | return target->to_read_description (target); |
424163ea DJ |
2412 | } |
2413 | ||
58a5184e | 2414 | /* This implements a basic search of memory, reading target memory and |
08388c79 DE |
2415 | performing the search here (as opposed to performing the search in on the |
2416 | target side with, for example, gdbserver). */ | |
2417 | ||
2418 | int | |
2419 | simple_search_memory (struct target_ops *ops, | |
2420 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2421 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2422 | CORE_ADDR *found_addrp) | |
2423 | { | |
2424 | /* NOTE: also defined in find.c testcase. */ | |
2425 | #define SEARCH_CHUNK_SIZE 16000 | |
2426 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
2427 | /* Buffer to hold memory contents for searching. */ | |
08388c79 | 2428 | unsigned search_buf_size; |
08388c79 DE |
2429 | |
2430 | search_buf_size = chunk_size + pattern_len - 1; | |
2431 | ||
2432 | /* No point in trying to allocate a buffer larger than the search space. */ | |
2433 | if (search_space_len < search_buf_size) | |
2434 | search_buf_size = search_space_len; | |
2435 | ||
26fcd5d7 | 2436 | gdb::byte_vector search_buf (search_buf_size); |
08388c79 DE |
2437 | |
2438 | /* Prime the search buffer. */ | |
2439 | ||
2440 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
26fcd5d7 TT |
2441 | search_buf.data (), start_addr, search_buf_size) |
2442 | != search_buf_size) | |
08388c79 | 2443 | { |
b3dc46ff AB |
2444 | warning (_("Unable to access %s bytes of target " |
2445 | "memory at %s, halting search."), | |
2446 | pulongest (search_buf_size), hex_string (start_addr)); | |
08388c79 DE |
2447 | return -1; |
2448 | } | |
2449 | ||
2450 | /* Perform the search. | |
2451 | ||
2452 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
2453 | When we've scanned N bytes we copy the trailing bytes to the start and | |
2454 | read in another N bytes. */ | |
2455 | ||
2456 | while (search_space_len >= pattern_len) | |
2457 | { | |
2458 | gdb_byte *found_ptr; | |
325fac50 PA |
2459 | unsigned nr_search_bytes |
2460 | = std::min (search_space_len, (ULONGEST) search_buf_size); | |
08388c79 | 2461 | |
26fcd5d7 | 2462 | found_ptr = (gdb_byte *) memmem (search_buf.data (), nr_search_bytes, |
d7f3ff3e | 2463 | pattern, pattern_len); |
08388c79 DE |
2464 | |
2465 | if (found_ptr != NULL) | |
2466 | { | |
26fcd5d7 | 2467 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf.data ()); |
5d502164 | 2468 | |
08388c79 | 2469 | *found_addrp = found_addr; |
08388c79 DE |
2470 | return 1; |
2471 | } | |
2472 | ||
2473 | /* Not found in this chunk, skip to next chunk. */ | |
2474 | ||
2475 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
2476 | if (search_space_len >= chunk_size) | |
2477 | search_space_len -= chunk_size; | |
2478 | else | |
2479 | search_space_len = 0; | |
2480 | ||
2481 | if (search_space_len >= pattern_len) | |
2482 | { | |
2483 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 2484 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
2485 | int nr_to_read; |
2486 | ||
2487 | /* Copy the trailing part of the previous iteration to the front | |
2488 | of the buffer for the next iteration. */ | |
2489 | gdb_assert (keep_len == pattern_len - 1); | |
26fcd5d7 | 2490 | memcpy (&search_buf[0], &search_buf[chunk_size], keep_len); |
08388c79 | 2491 | |
325fac50 PA |
2492 | nr_to_read = std::min (search_space_len - keep_len, |
2493 | (ULONGEST) chunk_size); | |
08388c79 DE |
2494 | |
2495 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
26fcd5d7 | 2496 | &search_buf[keep_len], read_addr, |
08388c79 DE |
2497 | nr_to_read) != nr_to_read) |
2498 | { | |
b3dc46ff | 2499 | warning (_("Unable to access %s bytes of target " |
9b20d036 | 2500 | "memory at %s, halting search."), |
b3dc46ff | 2501 | plongest (nr_to_read), |
08388c79 | 2502 | hex_string (read_addr)); |
08388c79 DE |
2503 | return -1; |
2504 | } | |
2505 | ||
2506 | start_addr += chunk_size; | |
2507 | } | |
2508 | } | |
2509 | ||
2510 | /* Not found. */ | |
2511 | ||
08388c79 DE |
2512 | return 0; |
2513 | } | |
2514 | ||
58a5184e TT |
2515 | /* Default implementation of memory-searching. */ |
2516 | ||
2517 | static int | |
2518 | default_search_memory (struct target_ops *self, | |
2519 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2520 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2521 | CORE_ADDR *found_addrp) | |
2522 | { | |
2523 | /* Start over from the top of the target stack. */ | |
2524 | return simple_search_memory (current_target.beneath, | |
2525 | start_addr, search_space_len, | |
2526 | pattern, pattern_len, found_addrp); | |
2527 | } | |
2528 | ||
08388c79 DE |
2529 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the |
2530 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2531 | ||
2532 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2533 | requiring halting of the search (e.g. memory read error). | |
2534 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2535 | ||
2536 | int | |
2537 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2538 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2539 | CORE_ADDR *found_addrp) | |
2540 | { | |
a7068b60 TT |
2541 | return current_target.to_search_memory (¤t_target, start_addr, |
2542 | search_space_len, | |
2543 | pattern, pattern_len, found_addrp); | |
08388c79 DE |
2544 | } |
2545 | ||
8edfe269 DJ |
2546 | /* Look through the currently pushed targets. If none of them will |
2547 | be able to restart the currently running process, issue an error | |
2548 | message. */ | |
2549 | ||
2550 | void | |
2551 | target_require_runnable (void) | |
2552 | { | |
2553 | struct target_ops *t; | |
2554 | ||
2555 | for (t = target_stack; t != NULL; t = t->beneath) | |
2556 | { | |
2557 | /* If this target knows how to create a new program, then | |
2558 | assume we will still be able to after killing the current | |
2559 | one. Either killing and mourning will not pop T, or else | |
2560 | find_default_run_target will find it again. */ | |
2561 | if (t->to_create_inferior != NULL) | |
2562 | return; | |
2563 | ||
548740d6 | 2564 | /* Do not worry about targets at certain strata that can not |
8edfe269 DJ |
2565 | create inferiors. Assume they will be pushed again if |
2566 | necessary, and continue to the process_stratum. */ | |
85e747d2 | 2567 | if (t->to_stratum == thread_stratum |
548740d6 | 2568 | || t->to_stratum == record_stratum |
85e747d2 | 2569 | || t->to_stratum == arch_stratum) |
8edfe269 DJ |
2570 | continue; |
2571 | ||
3e43a32a MS |
2572 | error (_("The \"%s\" target does not support \"run\". " |
2573 | "Try \"help target\" or \"continue\"."), | |
8edfe269 DJ |
2574 | t->to_shortname); |
2575 | } | |
2576 | ||
2577 | /* This function is only called if the target is running. In that | |
2578 | case there should have been a process_stratum target and it | |
c378eb4e | 2579 | should either know how to create inferiors, or not... */ |
9b20d036 | 2580 | internal_error (__FILE__, __LINE__, _("No targets found")); |
8edfe269 DJ |
2581 | } |
2582 | ||
6a3cb8e8 PA |
2583 | /* Whether GDB is allowed to fall back to the default run target for |
2584 | "run", "attach", etc. when no target is connected yet. */ | |
2585 | static int auto_connect_native_target = 1; | |
2586 | ||
2587 | static void | |
2588 | show_auto_connect_native_target (struct ui_file *file, int from_tty, | |
2589 | struct cmd_list_element *c, const char *value) | |
2590 | { | |
2591 | fprintf_filtered (file, | |
2592 | _("Whether GDB may automatically connect to the " | |
2593 | "native target is %s.\n"), | |
2594 | value); | |
2595 | } | |
2596 | ||
c906108c SS |
2597 | /* Look through the list of possible targets for a target that can |
2598 | execute a run or attach command without any other data. This is | |
2599 | used to locate the default process stratum. | |
2600 | ||
5f667f2d PA |
2601 | If DO_MESG is not NULL, the result is always valid (error() is |
2602 | called for errors); else, return NULL on error. */ | |
c906108c SS |
2603 | |
2604 | static struct target_ops * | |
a121b7c1 | 2605 | find_default_run_target (const char *do_mesg) |
c906108c | 2606 | { |
c906108c | 2607 | struct target_ops *runable = NULL; |
c906108c | 2608 | |
6a3cb8e8 | 2609 | if (auto_connect_native_target) |
c906108c | 2610 | { |
89a1c21a | 2611 | struct target_ops *t; |
6a3cb8e8 | 2612 | int count = 0; |
89a1c21a | 2613 | int i; |
6a3cb8e8 | 2614 | |
89a1c21a | 2615 | for (i = 0; VEC_iterate (target_ops_p, target_structs, i, t); ++i) |
c906108c | 2616 | { |
89a1c21a | 2617 | if (t->to_can_run != delegate_can_run && target_can_run (t)) |
6a3cb8e8 | 2618 | { |
89a1c21a | 2619 | runable = t; |
6a3cb8e8 PA |
2620 | ++count; |
2621 | } | |
c906108c | 2622 | } |
6a3cb8e8 PA |
2623 | |
2624 | if (count != 1) | |
2625 | runable = NULL; | |
c906108c SS |
2626 | } |
2627 | ||
6a3cb8e8 | 2628 | if (runable == NULL) |
5f667f2d PA |
2629 | { |
2630 | if (do_mesg) | |
2631 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
2632 | else | |
2633 | return NULL; | |
2634 | } | |
c906108c SS |
2635 | |
2636 | return runable; | |
2637 | } | |
2638 | ||
b3ccfe11 | 2639 | /* See target.h. */ |
c906108c | 2640 | |
b3ccfe11 TT |
2641 | struct target_ops * |
2642 | find_attach_target (void) | |
c906108c SS |
2643 | { |
2644 | struct target_ops *t; | |
2645 | ||
b3ccfe11 TT |
2646 | /* If a target on the current stack can attach, use it. */ |
2647 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2648 | { | |
2649 | if (t->to_attach != NULL) | |
2650 | break; | |
2651 | } | |
c906108c | 2652 | |
b3ccfe11 TT |
2653 | /* Otherwise, use the default run target for attaching. */ |
2654 | if (t == NULL) | |
2655 | t = find_default_run_target ("attach"); | |
b84876c2 | 2656 | |
b3ccfe11 | 2657 | return t; |
b84876c2 PA |
2658 | } |
2659 | ||
b3ccfe11 | 2660 | /* See target.h. */ |
b84876c2 | 2661 | |
b3ccfe11 TT |
2662 | struct target_ops * |
2663 | find_run_target (void) | |
9908b566 VP |
2664 | { |
2665 | struct target_ops *t; | |
2666 | ||
b3ccfe11 TT |
2667 | /* If a target on the current stack can attach, use it. */ |
2668 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2669 | { | |
2670 | if (t->to_create_inferior != NULL) | |
2671 | break; | |
2672 | } | |
5d502164 | 2673 | |
b3ccfe11 TT |
2674 | /* Otherwise, use the default run target. */ |
2675 | if (t == NULL) | |
2676 | t = find_default_run_target ("run"); | |
9908b566 | 2677 | |
b3ccfe11 | 2678 | return t; |
9908b566 VP |
2679 | } |
2680 | ||
145b16a9 UW |
2681 | /* Implement the "info proc" command. */ |
2682 | ||
451b7c33 | 2683 | int |
7bc112c1 | 2684 | target_info_proc (const char *args, enum info_proc_what what) |
145b16a9 UW |
2685 | { |
2686 | struct target_ops *t; | |
2687 | ||
2688 | /* If we're already connected to something that can get us OS | |
2689 | related data, use it. Otherwise, try using the native | |
2690 | target. */ | |
2691 | if (current_target.to_stratum >= process_stratum) | |
2692 | t = current_target.beneath; | |
2693 | else | |
2694 | t = find_default_run_target (NULL); | |
2695 | ||
2696 | for (; t != NULL; t = t->beneath) | |
2697 | { | |
2698 | if (t->to_info_proc != NULL) | |
2699 | { | |
2700 | t->to_info_proc (t, args, what); | |
2701 | ||
2702 | if (targetdebug) | |
2703 | fprintf_unfiltered (gdb_stdlog, | |
2704 | "target_info_proc (\"%s\", %d)\n", args, what); | |
2705 | ||
451b7c33 | 2706 | return 1; |
145b16a9 UW |
2707 | } |
2708 | } | |
2709 | ||
451b7c33 | 2710 | return 0; |
145b16a9 UW |
2711 | } |
2712 | ||
03583c20 | 2713 | static int |
2bfc0540 | 2714 | find_default_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
2715 | { |
2716 | struct target_ops *t; | |
2717 | ||
2718 | t = find_default_run_target (NULL); | |
2719 | if (t && t->to_supports_disable_randomization) | |
2bfc0540 | 2720 | return (t->to_supports_disable_randomization) (t); |
03583c20 UW |
2721 | return 0; |
2722 | } | |
2723 | ||
2724 | int | |
2725 | target_supports_disable_randomization (void) | |
2726 | { | |
2727 | struct target_ops *t; | |
2728 | ||
2729 | for (t = ¤t_target; t != NULL; t = t->beneath) | |
2730 | if (t->to_supports_disable_randomization) | |
2bfc0540 | 2731 | return t->to_supports_disable_randomization (t); |
03583c20 UW |
2732 | |
2733 | return 0; | |
2734 | } | |
9908b566 | 2735 | |
1fb77080 SDJ |
2736 | /* See target/target.h. */ |
2737 | ||
2738 | int | |
2739 | target_supports_multi_process (void) | |
2740 | { | |
2741 | return (*current_target.to_supports_multi_process) (¤t_target); | |
2742 | } | |
2743 | ||
b7b030ad TT |
2744 | /* See target.h. */ |
2745 | ||
2746 | gdb::unique_xmalloc_ptr<char> | |
07e059b5 VP |
2747 | target_get_osdata (const char *type) |
2748 | { | |
07e059b5 VP |
2749 | struct target_ops *t; |
2750 | ||
739ef7fb PA |
2751 | /* If we're already connected to something that can get us OS |
2752 | related data, use it. Otherwise, try using the native | |
2753 | target. */ | |
2754 | if (current_target.to_stratum >= process_stratum) | |
6d097e65 | 2755 | t = current_target.beneath; |
739ef7fb PA |
2756 | else |
2757 | t = find_default_run_target ("get OS data"); | |
07e059b5 VP |
2758 | |
2759 | if (!t) | |
2760 | return NULL; | |
2761 | ||
6d097e65 | 2762 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
2763 | } |
2764 | ||
8eaff7cd TT |
2765 | static struct address_space * |
2766 | default_thread_address_space (struct target_ops *self, ptid_t ptid) | |
6c95b8df PA |
2767 | { |
2768 | struct inferior *inf; | |
6c95b8df PA |
2769 | |
2770 | /* Fall-back to the "main" address space of the inferior. */ | |
c9657e70 | 2771 | inf = find_inferior_ptid (ptid); |
6c95b8df PA |
2772 | |
2773 | if (inf == NULL || inf->aspace == NULL) | |
3e43a32a | 2774 | internal_error (__FILE__, __LINE__, |
9b20d036 MS |
2775 | _("Can't determine the current " |
2776 | "address space of thread %s\n"), | |
6c95b8df PA |
2777 | target_pid_to_str (ptid)); |
2778 | ||
2779 | return inf->aspace; | |
2780 | } | |
2781 | ||
8eaff7cd TT |
2782 | /* Determine the current address space of thread PTID. */ |
2783 | ||
2784 | struct address_space * | |
2785 | target_thread_address_space (ptid_t ptid) | |
2786 | { | |
2787 | struct address_space *aspace; | |
2788 | ||
2789 | aspace = current_target.to_thread_address_space (¤t_target, ptid); | |
2790 | gdb_assert (aspace != NULL); | |
2791 | ||
8eaff7cd TT |
2792 | return aspace; |
2793 | } | |
2794 | ||
7313baad UW |
2795 | |
2796 | /* Target file operations. */ | |
2797 | ||
2798 | static struct target_ops * | |
2799 | default_fileio_target (void) | |
2800 | { | |
2801 | /* If we're already connected to something that can perform | |
2802 | file I/O, use it. Otherwise, try using the native target. */ | |
2803 | if (current_target.to_stratum >= process_stratum) | |
2804 | return current_target.beneath; | |
2805 | else | |
2806 | return find_default_run_target ("file I/O"); | |
2807 | } | |
2808 | ||
1c4b552b GB |
2809 | /* File handle for target file operations. */ |
2810 | ||
2811 | typedef struct | |
2812 | { | |
2813 | /* The target on which this file is open. */ | |
2814 | struct target_ops *t; | |
2815 | ||
2816 | /* The file descriptor on the target. */ | |
2817 | int fd; | |
2818 | } fileio_fh_t; | |
2819 | ||
2820 | DEF_VEC_O (fileio_fh_t); | |
2821 | ||
2822 | /* Vector of currently open file handles. The value returned by | |
2823 | target_fileio_open and passed as the FD argument to other | |
2824 | target_fileio_* functions is an index into this vector. This | |
2825 | vector's entries are never freed; instead, files are marked as | |
2826 | closed, and the handle becomes available for reuse. */ | |
2827 | static VEC (fileio_fh_t) *fileio_fhandles; | |
2828 | ||
2829 | /* Macro to check whether a fileio_fh_t represents a closed file. */ | |
2830 | #define is_closed_fileio_fh(fd) ((fd) < 0) | |
2831 | ||
2832 | /* Index into fileio_fhandles of the lowest handle that might be | |
2833 | closed. This permits handle reuse without searching the whole | |
2834 | list each time a new file is opened. */ | |
2835 | static int lowest_closed_fd; | |
2836 | ||
2837 | /* Acquire a target fileio file descriptor. */ | |
2838 | ||
2839 | static int | |
2840 | acquire_fileio_fd (struct target_ops *t, int fd) | |
2841 | { | |
870f88f7 | 2842 | fileio_fh_t *fh; |
1c4b552b GB |
2843 | |
2844 | gdb_assert (!is_closed_fileio_fh (fd)); | |
2845 | ||
2846 | /* Search for closed handles to reuse. */ | |
2847 | for (; | |
2848 | VEC_iterate (fileio_fh_t, fileio_fhandles, | |
2849 | lowest_closed_fd, fh); | |
2850 | lowest_closed_fd++) | |
2851 | if (is_closed_fileio_fh (fh->fd)) | |
2852 | break; | |
2853 | ||
2854 | /* Push a new handle if no closed handles were found. */ | |
2855 | if (lowest_closed_fd == VEC_length (fileio_fh_t, fileio_fhandles)) | |
2856 | fh = VEC_safe_push (fileio_fh_t, fileio_fhandles, NULL); | |
2857 | ||
2858 | /* Fill in the handle. */ | |
2859 | fh->t = t; | |
2860 | fh->fd = fd; | |
2861 | ||
2862 | /* Return its index, and start the next lookup at | |
2863 | the next index. */ | |
2864 | return lowest_closed_fd++; | |
2865 | } | |
2866 | ||
2867 | /* Release a target fileio file descriptor. */ | |
2868 | ||
2869 | static void | |
2870 | release_fileio_fd (int fd, fileio_fh_t *fh) | |
2871 | { | |
2872 | fh->fd = -1; | |
325fac50 | 2873 | lowest_closed_fd = std::min (lowest_closed_fd, fd); |
1c4b552b GB |
2874 | } |
2875 | ||
2876 | /* Return a pointer to the fileio_fhandle_t corresponding to FD. */ | |
2877 | ||
2878 | #define fileio_fd_to_fh(fd) \ | |
2879 | VEC_index (fileio_fh_t, fileio_fhandles, (fd)) | |
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 | |
1c4b552b GB |
2949 | if (is_closed_fileio_fh (fh->fd)) |
2950 | *target_errno = EBADF; | |
2951 | else | |
2952 | ret = fh->t->to_fileio_pwrite (fh->t, fh->fd, write_buf, | |
2953 | len, offset, target_errno); | |
7313baad | 2954 | |
1c4b552b GB |
2955 | if (targetdebug) |
2956 | fprintf_unfiltered (gdb_stdlog, | |
2957 | "target_fileio_pwrite (%d,...,%d,%s) " | |
2958 | "= %d (%d)\n", | |
2959 | fd, len, pulongest (offset), | |
2960 | ret, ret != -1 ? 0 : *target_errno); | |
2961 | return ret; | |
7313baad UW |
2962 | } |
2963 | ||
12e2a5fd GB |
2964 | /* See target.h. */ |
2965 | ||
7313baad UW |
2966 | int |
2967 | target_fileio_pread (int fd, gdb_byte *read_buf, int len, | |
2968 | ULONGEST offset, int *target_errno) | |
2969 | { | |
1c4b552b GB |
2970 | fileio_fh_t *fh = fileio_fd_to_fh (fd); |
2971 | int ret = -1; | |
7313baad | 2972 | |
1c4b552b GB |
2973 | if (is_closed_fileio_fh (fh->fd)) |
2974 | *target_errno = EBADF; | |
2975 | else | |
2976 | ret = fh->t->to_fileio_pread (fh->t, fh->fd, read_buf, | |
2977 | len, offset, target_errno); | |
7313baad | 2978 | |
1c4b552b GB |
2979 | if (targetdebug) |
2980 | fprintf_unfiltered (gdb_stdlog, | |
2981 | "target_fileio_pread (%d,...,%d,%s) " | |
2982 | "= %d (%d)\n", | |
2983 | fd, len, pulongest (offset), | |
2984 | ret, ret != -1 ? 0 : *target_errno); | |
9b15c1f0 GB |
2985 | return ret; |
2986 | } | |
2987 | ||
2988 | /* See target.h. */ | |
12e2a5fd | 2989 | |
9b15c1f0 GB |
2990 | int |
2991 | target_fileio_fstat (int fd, struct stat *sb, int *target_errno) | |
2992 | { | |
2993 | fileio_fh_t *fh = fileio_fd_to_fh (fd); | |
2994 | int ret = -1; | |
2995 | ||
2996 | if (is_closed_fileio_fh (fh->fd)) | |
2997 | *target_errno = EBADF; | |
2998 | else | |
2999 | ret = fh->t->to_fileio_fstat (fh->t, fh->fd, sb, target_errno); | |
3000 | ||
3001 | if (targetdebug) | |
3002 | fprintf_unfiltered (gdb_stdlog, | |
3003 | "target_fileio_fstat (%d) = %d (%d)\n", | |
3004 | fd, ret, ret != -1 ? 0 : *target_errno); | |
1c4b552b | 3005 | return ret; |
7313baad UW |
3006 | } |
3007 | ||
12e2a5fd GB |
3008 | /* See target.h. */ |
3009 | ||
7313baad UW |
3010 | int |
3011 | target_fileio_close (int fd, int *target_errno) | |
3012 | { | |
1c4b552b GB |
3013 | fileio_fh_t *fh = fileio_fd_to_fh (fd); |
3014 | int ret = -1; | |
7313baad | 3015 | |
1c4b552b GB |
3016 | if (is_closed_fileio_fh (fh->fd)) |
3017 | *target_errno = EBADF; | |
3018 | else | |
7313baad | 3019 | { |
1c4b552b GB |
3020 | ret = fh->t->to_fileio_close (fh->t, fh->fd, target_errno); |
3021 | release_fileio_fd (fd, fh); | |
7313baad UW |
3022 | } |
3023 | ||
1c4b552b GB |
3024 | if (targetdebug) |
3025 | fprintf_unfiltered (gdb_stdlog, | |
3026 | "target_fileio_close (%d) = %d (%d)\n", | |
3027 | fd, ret, ret != -1 ? 0 : *target_errno); | |
3028 | return ret; | |
7313baad UW |
3029 | } |
3030 | ||
12e2a5fd GB |
3031 | /* See target.h. */ |
3032 | ||
7313baad | 3033 | int |
07c138c8 GB |
3034 | target_fileio_unlink (struct inferior *inf, const char *filename, |
3035 | int *target_errno) | |
7313baad UW |
3036 | { |
3037 | struct target_ops *t; | |
3038 | ||
3039 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3040 | { | |
3041 | if (t->to_fileio_unlink != NULL) | |
3042 | { | |
07c138c8 GB |
3043 | int ret = t->to_fileio_unlink (t, inf, filename, |
3044 | target_errno); | |
7313baad UW |
3045 | |
3046 | if (targetdebug) | |
3047 | fprintf_unfiltered (gdb_stdlog, | |
07c138c8 GB |
3048 | "target_fileio_unlink (%d,%s)" |
3049 | " = %d (%d)\n", | |
3050 | inf == NULL ? 0 : inf->num, filename, | |
3051 | ret, ret != -1 ? 0 : *target_errno); | |
7313baad UW |
3052 | return ret; |
3053 | } | |
3054 | } | |
3055 | ||
3056 | *target_errno = FILEIO_ENOSYS; | |
3057 | return -1; | |
3058 | } | |
3059 | ||
12e2a5fd GB |
3060 | /* See target.h. */ |
3061 | ||
e0d3522b | 3062 | gdb::optional<std::string> |
07c138c8 GB |
3063 | target_fileio_readlink (struct inferior *inf, const char *filename, |
3064 | int *target_errno) | |
b9e7b9c3 UW |
3065 | { |
3066 | struct target_ops *t; | |
3067 | ||
3068 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3069 | { | |
3070 | if (t->to_fileio_readlink != NULL) | |
3071 | { | |
e0d3522b TT |
3072 | gdb::optional<std::string> ret |
3073 | = t->to_fileio_readlink (t, inf, filename, target_errno); | |
b9e7b9c3 UW |
3074 | |
3075 | if (targetdebug) | |
3076 | fprintf_unfiltered (gdb_stdlog, | |
07c138c8 GB |
3077 | "target_fileio_readlink (%d,%s)" |
3078 | " = %s (%d)\n", | |
3079 | inf == NULL ? 0 : inf->num, | |
e0d3522b TT |
3080 | filename, ret ? ret->c_str () : "(nil)", |
3081 | ret ? 0 : *target_errno); | |
b9e7b9c3 UW |
3082 | return ret; |
3083 | } | |
3084 | } | |
3085 | ||
3086 | *target_errno = FILEIO_ENOSYS; | |
e0d3522b | 3087 | return {}; |
b9e7b9c3 UW |
3088 | } |
3089 | ||
7313baad UW |
3090 | static void |
3091 | target_fileio_close_cleanup (void *opaque) | |
3092 | { | |
3093 | int fd = *(int *) opaque; | |
3094 | int target_errno; | |
3095 | ||
3096 | target_fileio_close (fd, &target_errno); | |
3097 | } | |
3098 | ||
07c138c8 GB |
3099 | /* Read target file FILENAME, in the filesystem as seen by INF. If |
3100 | INF is NULL, use the filesystem seen by the debugger (GDB or, for | |
3101 | remote targets, the remote stub). Store the result in *BUF_P and | |
3102 | return the size of the transferred data. PADDING additional bytes | |
3103 | are available in *BUF_P. This is a helper function for | |
3104 | target_fileio_read_alloc; see the declaration of that function for | |
3105 | more information. */ | |
7313baad | 3106 | |
f7af1fcd JK |
3107 | static LONGEST |
3108 | target_fileio_read_alloc_1 (struct inferior *inf, const char *filename, | |
3109 | gdb_byte **buf_p, int padding) | |
3110 | { | |
3111 | struct cleanup *close_cleanup; | |
db1ff28b JK |
3112 | size_t buf_alloc, buf_pos; |
3113 | gdb_byte *buf; | |
3114 | LONGEST n; | |
3115 | int fd; | |
3116 | int target_errno; | |
f7af1fcd | 3117 | |
db1ff28b JK |
3118 | fd = target_fileio_open (inf, filename, FILEIO_O_RDONLY, 0700, |
3119 | &target_errno); | |
f7af1fcd JK |
3120 | if (fd == -1) |
3121 | return -1; | |
3122 | ||
3123 | close_cleanup = make_cleanup (target_fileio_close_cleanup, &fd); | |
db1ff28b JK |
3124 | |
3125 | /* Start by reading up to 4K at a time. The target will throttle | |
3126 | this number down if necessary. */ | |
3127 | buf_alloc = 4096; | |
224c3ddb | 3128 | buf = (gdb_byte *) xmalloc (buf_alloc); |
db1ff28b JK |
3129 | buf_pos = 0; |
3130 | while (1) | |
3131 | { | |
3132 | n = target_fileio_pread (fd, &buf[buf_pos], | |
3133 | buf_alloc - buf_pos - padding, buf_pos, | |
3134 | &target_errno); | |
3135 | if (n < 0) | |
3136 | { | |
3137 | /* An error occurred. */ | |
3138 | do_cleanups (close_cleanup); | |
3139 | xfree (buf); | |
3140 | return -1; | |
3141 | } | |
3142 | else if (n == 0) | |
3143 | { | |
3144 | /* Read all there was. */ | |
3145 | do_cleanups (close_cleanup); | |
3146 | if (buf_pos == 0) | |
3147 | xfree (buf); | |
3148 | else | |
3149 | *buf_p = buf; | |
3150 | return buf_pos; | |
3151 | } | |
3152 | ||
3153 | buf_pos += n; | |
3154 | ||
3155 | /* If the buffer is filling up, expand it. */ | |
3156 | if (buf_alloc < buf_pos * 2) | |
3157 | { | |
3158 | buf_alloc *= 2; | |
224c3ddb | 3159 | buf = (gdb_byte *) xrealloc (buf, buf_alloc); |
db1ff28b JK |
3160 | } |
3161 | ||
3162 | QUIT; | |
3163 | } | |
f7af1fcd JK |
3164 | } |
3165 | ||
12e2a5fd | 3166 | /* See target.h. */ |
7313baad UW |
3167 | |
3168 | LONGEST | |
07c138c8 GB |
3169 | target_fileio_read_alloc (struct inferior *inf, const char *filename, |
3170 | gdb_byte **buf_p) | |
7313baad | 3171 | { |
07c138c8 | 3172 | return target_fileio_read_alloc_1 (inf, filename, buf_p, 0); |
7313baad UW |
3173 | } |
3174 | ||
db1ff28b | 3175 | /* See target.h. */ |
f7af1fcd | 3176 | |
87028b87 | 3177 | gdb::unique_xmalloc_ptr<char> |
f7af1fcd JK |
3178 | target_fileio_read_stralloc (struct inferior *inf, const char *filename) |
3179 | { | |
db1ff28b JK |
3180 | gdb_byte *buffer; |
3181 | char *bufstr; | |
3182 | LONGEST i, transferred; | |
3183 | ||
3184 | transferred = target_fileio_read_alloc_1 (inf, filename, &buffer, 1); | |
3185 | bufstr = (char *) buffer; | |
3186 | ||
3187 | if (transferred < 0) | |
87028b87 | 3188 | return gdb::unique_xmalloc_ptr<char> (nullptr); |
db1ff28b JK |
3189 | |
3190 | if (transferred == 0) | |
87028b87 | 3191 | return gdb::unique_xmalloc_ptr<char> (xstrdup ("")); |
db1ff28b JK |
3192 | |
3193 | bufstr[transferred] = 0; | |
3194 | ||
3195 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
3196 | for (i = strlen (bufstr); i < transferred; i++) | |
3197 | if (bufstr[i] != 0) | |
3198 | { | |
3199 | warning (_("target file %s " | |
3200 | "contained unexpected null characters"), | |
3201 | filename); | |
3202 | break; | |
3203 | } | |
3204 | ||
87028b87 | 3205 | return gdb::unique_xmalloc_ptr<char> (bufstr); |
f7af1fcd | 3206 | } |
7313baad | 3207 | |
db1ff28b | 3208 | |
e0d24f8d | 3209 | static int |
31568a15 TT |
3210 | default_region_ok_for_hw_watchpoint (struct target_ops *self, |
3211 | CORE_ADDR addr, int len) | |
e0d24f8d | 3212 | { |
f5656ead | 3213 | return (len <= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT); |
ccaa32c7 GS |
3214 | } |
3215 | ||
5009afc5 AS |
3216 | static int |
3217 | default_watchpoint_addr_within_range (struct target_ops *target, | |
3218 | CORE_ADDR addr, | |
3219 | CORE_ADDR start, int length) | |
3220 | { | |
3221 | return addr >= start && addr < start + length; | |
3222 | } | |
3223 | ||
c2250ad1 UW |
3224 | static struct gdbarch * |
3225 | default_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
3226 | { | |
5cd63fda PA |
3227 | inferior *inf = find_inferior_ptid (ptid); |
3228 | gdb_assert (inf != NULL); | |
3229 | return inf->gdbarch; | |
c2250ad1 UW |
3230 | } |
3231 | ||
c906108c | 3232 | static int |
555bbdeb TT |
3233 | return_zero (struct target_ops *ignore) |
3234 | { | |
3235 | return 0; | |
3236 | } | |
3237 | ||
3238 | static int | |
3239 | return_zero_has_execution (struct target_ops *ignore, ptid_t ignore2) | |
c906108c SS |
3240 | { |
3241 | return 0; | |
3242 | } | |
3243 | ||
ed9a39eb JM |
3244 | /* |
3245 | * Find the next target down the stack from the specified target. | |
3246 | */ | |
3247 | ||
3248 | struct target_ops * | |
fba45db2 | 3249 | find_target_beneath (struct target_ops *t) |
ed9a39eb | 3250 | { |
258b763a | 3251 | return t->beneath; |
ed9a39eb JM |
3252 | } |
3253 | ||
8b06beed TT |
3254 | /* See target.h. */ |
3255 | ||
3256 | struct target_ops * | |
3257 | find_target_at (enum strata stratum) | |
3258 | { | |
3259 | struct target_ops *t; | |
3260 | ||
3261 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3262 | if (t->to_stratum == stratum) | |
3263 | return t; | |
3264 | ||
3265 | return NULL; | |
3266 | } | |
3267 | ||
c906108c | 3268 | \f |
0f48b757 PA |
3269 | |
3270 | /* See target.h */ | |
3271 | ||
3272 | void | |
3273 | target_announce_detach (int from_tty) | |
3274 | { | |
3275 | pid_t pid; | |
a121b7c1 | 3276 | const char *exec_file; |
0f48b757 PA |
3277 | |
3278 | if (!from_tty) | |
3279 | return; | |
3280 | ||
3281 | exec_file = get_exec_file (0); | |
3282 | if (exec_file == NULL) | |
3283 | exec_file = ""; | |
3284 | ||
3285 | pid = ptid_get_pid (inferior_ptid); | |
3286 | printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file, | |
3287 | target_pid_to_str (pid_to_ptid (pid))); | |
3288 | gdb_flush (gdb_stdout); | |
3289 | } | |
3290 | ||
c906108c SS |
3291 | /* The inferior process has died. Long live the inferior! */ |
3292 | ||
3293 | void | |
fba45db2 | 3294 | generic_mourn_inferior (void) |
c906108c | 3295 | { |
7f9f62ba | 3296 | ptid_t ptid; |
c906108c | 3297 | |
7f9f62ba | 3298 | ptid = inferior_ptid; |
39f77062 | 3299 | inferior_ptid = null_ptid; |
7f9f62ba | 3300 | |
f59f708a PA |
3301 | /* Mark breakpoints uninserted in case something tries to delete a |
3302 | breakpoint while we delete the inferior's threads (which would | |
3303 | fail, since the inferior is long gone). */ | |
3304 | mark_breakpoints_out (); | |
3305 | ||
7f9f62ba PA |
3306 | if (!ptid_equal (ptid, null_ptid)) |
3307 | { | |
3308 | int pid = ptid_get_pid (ptid); | |
6c95b8df | 3309 | exit_inferior (pid); |
7f9f62ba PA |
3310 | } |
3311 | ||
f59f708a PA |
3312 | /* Note this wipes step-resume breakpoints, so needs to be done |
3313 | after exit_inferior, which ends up referencing the step-resume | |
3314 | breakpoints through clear_thread_inferior_resources. */ | |
c906108c | 3315 | breakpoint_init_inferior (inf_exited); |
f59f708a | 3316 | |
c906108c SS |
3317 | registers_changed (); |
3318 | ||
c906108c SS |
3319 | reopen_exec_file (); |
3320 | reinit_frame_cache (); | |
3321 | ||
9a4105ab AC |
3322 | if (deprecated_detach_hook) |
3323 | deprecated_detach_hook (); | |
c906108c SS |
3324 | } |
3325 | \f | |
fd0a2a6f MK |
3326 | /* Convert a normal process ID to a string. Returns the string in a |
3327 | static buffer. */ | |
c906108c | 3328 | |
7a114964 | 3329 | const char * |
39f77062 | 3330 | normal_pid_to_str (ptid_t ptid) |
c906108c | 3331 | { |
fd0a2a6f | 3332 | static char buf[32]; |
c906108c | 3333 | |
5fff8fc0 | 3334 | xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid)); |
c906108c SS |
3335 | return buf; |
3336 | } | |
3337 | ||
7a114964 | 3338 | static const char * |
770234d3 | 3339 | default_pid_to_str (struct target_ops *ops, ptid_t ptid) |
117de6a9 PA |
3340 | { |
3341 | return normal_pid_to_str (ptid); | |
3342 | } | |
3343 | ||
9b4eba8e HZ |
3344 | /* Error-catcher for target_find_memory_regions. */ |
3345 | static int | |
2e73927c TT |
3346 | dummy_find_memory_regions (struct target_ops *self, |
3347 | find_memory_region_ftype ignore1, void *ignore2) | |
be4d1333 | 3348 | { |
9b4eba8e | 3349 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3350 | return 0; |
3351 | } | |
3352 | ||
9b4eba8e HZ |
3353 | /* Error-catcher for target_make_corefile_notes. */ |
3354 | static char * | |
fc6691b2 TT |
3355 | dummy_make_corefile_notes (struct target_ops *self, |
3356 | bfd *ignore1, int *ignore2) | |
be4d1333 | 3357 | { |
9b4eba8e | 3358 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3359 | return NULL; |
3360 | } | |
3361 | ||
c906108c SS |
3362 | /* Set up the handful of non-empty slots needed by the dummy target |
3363 | vector. */ | |
3364 | ||
3365 | static void | |
fba45db2 | 3366 | init_dummy_target (void) |
c906108c SS |
3367 | { |
3368 | dummy_target.to_shortname = "None"; | |
3369 | dummy_target.to_longname = "None"; | |
3370 | dummy_target.to_doc = ""; | |
03583c20 UW |
3371 | dummy_target.to_supports_disable_randomization |
3372 | = find_default_supports_disable_randomization; | |
c906108c | 3373 | dummy_target.to_stratum = dummy_stratum; |
555bbdeb TT |
3374 | dummy_target.to_has_all_memory = return_zero; |
3375 | dummy_target.to_has_memory = return_zero; | |
3376 | dummy_target.to_has_stack = return_zero; | |
3377 | dummy_target.to_has_registers = return_zero; | |
3378 | dummy_target.to_has_execution = return_zero_has_execution; | |
c906108c | 3379 | dummy_target.to_magic = OPS_MAGIC; |
1101cb7b TT |
3380 | |
3381 | install_dummy_methods (&dummy_target); | |
c906108c | 3382 | } |
c906108c | 3383 | \f |
c906108c | 3384 | |
f1c07ab0 | 3385 | void |
460014f5 | 3386 | target_close (struct target_ops *targ) |
f1c07ab0 | 3387 | { |
7fdc1521 TT |
3388 | gdb_assert (!target_is_pushed (targ)); |
3389 | ||
f1c07ab0 | 3390 | if (targ->to_xclose != NULL) |
460014f5 | 3391 | targ->to_xclose (targ); |
f1c07ab0 | 3392 | else if (targ->to_close != NULL) |
de90e03d | 3393 | targ->to_close (targ); |
947b8855 PA |
3394 | |
3395 | if (targetdebug) | |
460014f5 | 3396 | fprintf_unfiltered (gdb_stdlog, "target_close ()\n"); |
f1c07ab0 AC |
3397 | } |
3398 | ||
28439f5e PA |
3399 | int |
3400 | target_thread_alive (ptid_t ptid) | |
c906108c | 3401 | { |
a7068b60 | 3402 | return current_target.to_thread_alive (¤t_target, ptid); |
28439f5e PA |
3403 | } |
3404 | ||
3405 | void | |
e8032dde | 3406 | target_update_thread_list (void) |
28439f5e | 3407 | { |
e8032dde | 3408 | current_target.to_update_thread_list (¤t_target); |
c906108c SS |
3409 | } |
3410 | ||
d914c394 SS |
3411 | void |
3412 | target_stop (ptid_t ptid) | |
3413 | { | |
3414 | if (!may_stop) | |
3415 | { | |
3416 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3417 | return; | |
3418 | } | |
3419 | ||
1eab8a48 | 3420 | (*current_target.to_stop) (¤t_target, ptid); |
d914c394 SS |
3421 | } |
3422 | ||
bfedc46a | 3423 | void |
e671cd59 | 3424 | target_interrupt () |
bfedc46a PA |
3425 | { |
3426 | if (!may_stop) | |
3427 | { | |
3428 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3429 | return; | |
3430 | } | |
3431 | ||
e671cd59 | 3432 | (*current_target.to_interrupt) (¤t_target); |
bfedc46a PA |
3433 | } |
3434 | ||
abc56d60 PA |
3435 | /* See target.h. */ |
3436 | ||
93692b58 PA |
3437 | void |
3438 | target_pass_ctrlc (void) | |
3439 | { | |
3440 | (*current_target.to_pass_ctrlc) (¤t_target); | |
3441 | } | |
3442 | ||
3443 | /* See target.h. */ | |
3444 | ||
3445 | void | |
3446 | default_target_pass_ctrlc (struct target_ops *ops) | |
3447 | { | |
e671cd59 | 3448 | target_interrupt (); |
93692b58 PA |
3449 | } |
3450 | ||
f8c1d06b GB |
3451 | /* See target/target.h. */ |
3452 | ||
3453 | void | |
03f4463b | 3454 | target_stop_and_wait (ptid_t ptid) |
f8c1d06b GB |
3455 | { |
3456 | struct target_waitstatus status; | |
3457 | int was_non_stop = non_stop; | |
3458 | ||
3459 | non_stop = 1; | |
3460 | target_stop (ptid); | |
3461 | ||
3462 | memset (&status, 0, sizeof (status)); | |
3463 | target_wait (ptid, &status, 0); | |
3464 | ||
3465 | non_stop = was_non_stop; | |
3466 | } | |
3467 | ||
3468 | /* See target/target.h. */ | |
3469 | ||
3470 | void | |
03f4463b | 3471 | target_continue_no_signal (ptid_t ptid) |
f8c1d06b GB |
3472 | { |
3473 | target_resume (ptid, 0, GDB_SIGNAL_0); | |
3474 | } | |
3475 | ||
049a8570 SDJ |
3476 | /* See target/target.h. */ |
3477 | ||
3478 | void | |
3479 | target_continue (ptid_t ptid, enum gdb_signal signal) | |
3480 | { | |
3481 | target_resume (ptid, 0, signal); | |
3482 | } | |
3483 | ||
09826ec5 PA |
3484 | /* Concatenate ELEM to LIST, a comma separate list, and return the |
3485 | result. The LIST incoming argument is released. */ | |
3486 | ||
3487 | static char * | |
3488 | str_comma_list_concat_elem (char *list, const char *elem) | |
3489 | { | |
3490 | if (list == NULL) | |
3491 | return xstrdup (elem); | |
3492 | else | |
3493 | return reconcat (list, list, ", ", elem, (char *) NULL); | |
3494 | } | |
3495 | ||
3496 | /* Helper for target_options_to_string. If OPT is present in | |
3497 | TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET. | |
3498 | Returns the new resulting string. OPT is removed from | |
3499 | TARGET_OPTIONS. */ | |
3500 | ||
3501 | static char * | |
3502 | do_option (int *target_options, char *ret, | |
a121b7c1 | 3503 | int opt, const char *opt_str) |
09826ec5 PA |
3504 | { |
3505 | if ((*target_options & opt) != 0) | |
3506 | { | |
3507 | ret = str_comma_list_concat_elem (ret, opt_str); | |
3508 | *target_options &= ~opt; | |
3509 | } | |
3510 | ||
3511 | return ret; | |
3512 | } | |
3513 | ||
3514 | char * | |
3515 | target_options_to_string (int target_options) | |
3516 | { | |
3517 | char *ret = NULL; | |
3518 | ||
3519 | #define DO_TARG_OPTION(OPT) \ | |
3520 | ret = do_option (&target_options, ret, OPT, #OPT) | |
3521 | ||
3522 | DO_TARG_OPTION (TARGET_WNOHANG); | |
3523 | ||
3524 | if (target_options != 0) | |
3525 | ret = str_comma_list_concat_elem (ret, "unknown???"); | |
3526 | ||
3527 | if (ret == NULL) | |
3528 | ret = xstrdup (""); | |
3529 | return ret; | |
3530 | } | |
3531 | ||
28439f5e PA |
3532 | void |
3533 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 3534 | { |
ad5989bd TT |
3535 | current_target.to_fetch_registers (¤t_target, regcache, regno); |
3536 | if (targetdebug) | |
ef79d9a3 | 3537 | regcache->debug_print_register ("target_fetch_registers", regno); |
c906108c SS |
3538 | } |
3539 | ||
28439f5e PA |
3540 | void |
3541 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 3542 | { |
d914c394 SS |
3543 | if (!may_write_registers) |
3544 | error (_("Writing to registers is not allowed (regno %d)"), regno); | |
3545 | ||
6b84065d TT |
3546 | current_target.to_store_registers (¤t_target, regcache, regno); |
3547 | if (targetdebug) | |
28439f5e | 3548 | { |
ef79d9a3 | 3549 | regcache->debug_print_register ("target_store_registers", regno); |
28439f5e | 3550 | } |
c906108c SS |
3551 | } |
3552 | ||
dc146f7c VP |
3553 | int |
3554 | target_core_of_thread (ptid_t ptid) | |
3555 | { | |
a7068b60 | 3556 | return current_target.to_core_of_thread (¤t_target, ptid); |
dc146f7c VP |
3557 | } |
3558 | ||
936d2992 PA |
3559 | int |
3560 | simple_verify_memory (struct target_ops *ops, | |
3561 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
3562 | { | |
3563 | LONGEST total_xfered = 0; | |
3564 | ||
3565 | while (total_xfered < size) | |
3566 | { | |
3567 | ULONGEST xfered_len; | |
3568 | enum target_xfer_status status; | |
3569 | gdb_byte buf[1024]; | |
768adc05 | 3570 | ULONGEST howmuch = std::min<ULONGEST> (sizeof (buf), size - total_xfered); |
936d2992 PA |
3571 | |
3572 | status = target_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
3573 | buf, NULL, lma + total_xfered, howmuch, | |
3574 | &xfered_len); | |
3575 | if (status == TARGET_XFER_OK | |
3576 | && memcmp (data + total_xfered, buf, xfered_len) == 0) | |
3577 | { | |
3578 | total_xfered += xfered_len; | |
3579 | QUIT; | |
3580 | } | |
3581 | else | |
3582 | return 0; | |
3583 | } | |
3584 | return 1; | |
3585 | } | |
3586 | ||
3587 | /* Default implementation of memory verification. */ | |
3588 | ||
3589 | static int | |
3590 | default_verify_memory (struct target_ops *self, | |
3591 | const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3592 | { | |
3593 | /* Start over from the top of the target stack. */ | |
3594 | return simple_verify_memory (current_target.beneath, | |
3595 | data, memaddr, size); | |
3596 | } | |
3597 | ||
4a5e7a5b PA |
3598 | int |
3599 | target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3600 | { | |
a7068b60 TT |
3601 | return current_target.to_verify_memory (¤t_target, |
3602 | data, memaddr, size); | |
4a5e7a5b PA |
3603 | } |
3604 | ||
9c06b0b4 TJB |
3605 | /* The documentation for this function is in its prototype declaration in |
3606 | target.h. */ | |
3607 | ||
3608 | int | |
f4b0a671 SM |
3609 | target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, |
3610 | enum target_hw_bp_type rw) | |
9c06b0b4 | 3611 | { |
a7068b60 TT |
3612 | return current_target.to_insert_mask_watchpoint (¤t_target, |
3613 | addr, mask, rw); | |
9c06b0b4 TJB |
3614 | } |
3615 | ||
3616 | /* The documentation for this function is in its prototype declaration in | |
3617 | target.h. */ | |
3618 | ||
3619 | int | |
f4b0a671 SM |
3620 | target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, |
3621 | enum target_hw_bp_type rw) | |
9c06b0b4 | 3622 | { |
a7068b60 TT |
3623 | return current_target.to_remove_mask_watchpoint (¤t_target, |
3624 | addr, mask, rw); | |
9c06b0b4 TJB |
3625 | } |
3626 | ||
3627 | /* The documentation for this function is in its prototype declaration | |
3628 | in target.h. */ | |
3629 | ||
3630 | int | |
3631 | target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask) | |
3632 | { | |
6c7e5e5c TT |
3633 | return current_target.to_masked_watch_num_registers (¤t_target, |
3634 | addr, mask); | |
9c06b0b4 TJB |
3635 | } |
3636 | ||
f1310107 TJB |
3637 | /* The documentation for this function is in its prototype declaration |
3638 | in target.h. */ | |
3639 | ||
3640 | int | |
3641 | target_ranged_break_num_registers (void) | |
3642 | { | |
a134316b | 3643 | return current_target.to_ranged_break_num_registers (¤t_target); |
f1310107 TJB |
3644 | } |
3645 | ||
02d27625 MM |
3646 | /* See target.h. */ |
3647 | ||
02d27625 | 3648 | struct btrace_target_info * |
f4abbc16 | 3649 | target_enable_btrace (ptid_t ptid, const struct btrace_config *conf) |
02d27625 | 3650 | { |
f4abbc16 | 3651 | return current_target.to_enable_btrace (¤t_target, ptid, conf); |
02d27625 MM |
3652 | } |
3653 | ||
3654 | /* See target.h. */ | |
3655 | ||
3656 | void | |
3657 | target_disable_btrace (struct btrace_target_info *btinfo) | |
3658 | { | |
8dc292d3 | 3659 | current_target.to_disable_btrace (¤t_target, btinfo); |
02d27625 MM |
3660 | } |
3661 | ||
3662 | /* See target.h. */ | |
3663 | ||
3664 | void | |
3665 | target_teardown_btrace (struct btrace_target_info *btinfo) | |
3666 | { | |
9ace480d | 3667 | current_target.to_teardown_btrace (¤t_target, btinfo); |
02d27625 MM |
3668 | } |
3669 | ||
3670 | /* See target.h. */ | |
3671 | ||
969c39fb | 3672 | enum btrace_error |
734b0e4b | 3673 | target_read_btrace (struct btrace_data *btrace, |
969c39fb | 3674 | struct btrace_target_info *btinfo, |
02d27625 MM |
3675 | enum btrace_read_type type) |
3676 | { | |
eb5b20d4 | 3677 | return current_target.to_read_btrace (¤t_target, btrace, btinfo, type); |
02d27625 MM |
3678 | } |
3679 | ||
d02ed0bb MM |
3680 | /* See target.h. */ |
3681 | ||
f4abbc16 MM |
3682 | const struct btrace_config * |
3683 | target_btrace_conf (const struct btrace_target_info *btinfo) | |
3684 | { | |
3685 | return current_target.to_btrace_conf (¤t_target, btinfo); | |
3686 | } | |
3687 | ||
3688 | /* See target.h. */ | |
3689 | ||
7c1687a9 MM |
3690 | void |
3691 | target_stop_recording (void) | |
3692 | { | |
ee97f592 | 3693 | current_target.to_stop_recording (¤t_target); |
7c1687a9 MM |
3694 | } |
3695 | ||
3696 | /* See target.h. */ | |
3697 | ||
d02ed0bb | 3698 | void |
85e1311a | 3699 | target_save_record (const char *filename) |
d02ed0bb | 3700 | { |
f09e2107 | 3701 | current_target.to_save_record (¤t_target, filename); |
d02ed0bb MM |
3702 | } |
3703 | ||
3704 | /* See target.h. */ | |
3705 | ||
3706 | int | |
3707 | target_supports_delete_record (void) | |
3708 | { | |
3709 | struct target_ops *t; | |
3710 | ||
3711 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
b0ed115f TT |
3712 | if (t->to_delete_record != delegate_delete_record |
3713 | && t->to_delete_record != tdefault_delete_record) | |
d02ed0bb MM |
3714 | return 1; |
3715 | ||
3716 | return 0; | |
3717 | } | |
3718 | ||
3719 | /* See target.h. */ | |
3720 | ||
3721 | void | |
3722 | target_delete_record (void) | |
3723 | { | |
07366925 | 3724 | current_target.to_delete_record (¤t_target); |
d02ed0bb MM |
3725 | } |
3726 | ||
3727 | /* See target.h. */ | |
3728 | ||
b158a20f TW |
3729 | enum record_method |
3730 | target_record_method (ptid_t ptid) | |
3731 | { | |
3732 | return current_target.to_record_method (¤t_target, ptid); | |
3733 | } | |
3734 | ||
3735 | /* See target.h. */ | |
3736 | ||
d02ed0bb | 3737 | int |
a52eab48 | 3738 | target_record_is_replaying (ptid_t ptid) |
d02ed0bb | 3739 | { |
a52eab48 | 3740 | return current_target.to_record_is_replaying (¤t_target, ptid); |
d02ed0bb MM |
3741 | } |
3742 | ||
3743 | /* See target.h. */ | |
3744 | ||
7ff27e9b MM |
3745 | int |
3746 | target_record_will_replay (ptid_t ptid, int dir) | |
3747 | { | |
3748 | return current_target.to_record_will_replay (¤t_target, ptid, dir); | |
3749 | } | |
3750 | ||
3751 | /* See target.h. */ | |
3752 | ||
797094dd MM |
3753 | void |
3754 | target_record_stop_replaying (void) | |
3755 | { | |
3756 | current_target.to_record_stop_replaying (¤t_target); | |
3757 | } | |
3758 | ||
3759 | /* See target.h. */ | |
3760 | ||
d02ed0bb MM |
3761 | void |
3762 | target_goto_record_begin (void) | |
3763 | { | |
671e76cc | 3764 | current_target.to_goto_record_begin (¤t_target); |
d02ed0bb MM |
3765 | } |
3766 | ||
3767 | /* See target.h. */ | |
3768 | ||
3769 | void | |
3770 | target_goto_record_end (void) | |
3771 | { | |
e9179bb3 | 3772 | current_target.to_goto_record_end (¤t_target); |
d02ed0bb MM |
3773 | } |
3774 | ||
3775 | /* See target.h. */ | |
3776 | ||
3777 | void | |
3778 | target_goto_record (ULONGEST insn) | |
3779 | { | |
05969c84 | 3780 | current_target.to_goto_record (¤t_target, insn); |
d02ed0bb MM |
3781 | } |
3782 | ||
67c86d06 MM |
3783 | /* See target.h. */ |
3784 | ||
3785 | void | |
9a24775b | 3786 | target_insn_history (int size, gdb_disassembly_flags flags) |
67c86d06 | 3787 | { |
3679abfa | 3788 | current_target.to_insn_history (¤t_target, size, flags); |
67c86d06 MM |
3789 | } |
3790 | ||
3791 | /* See target.h. */ | |
3792 | ||
3793 | void | |
9a24775b PA |
3794 | target_insn_history_from (ULONGEST from, int size, |
3795 | gdb_disassembly_flags flags) | |
67c86d06 | 3796 | { |
8444ab58 | 3797 | current_target.to_insn_history_from (¤t_target, from, size, flags); |
67c86d06 MM |
3798 | } |
3799 | ||
3800 | /* See target.h. */ | |
3801 | ||
3802 | void | |
9a24775b PA |
3803 | target_insn_history_range (ULONGEST begin, ULONGEST end, |
3804 | gdb_disassembly_flags flags) | |
67c86d06 | 3805 | { |
c29302cc | 3806 | current_target.to_insn_history_range (¤t_target, begin, end, flags); |
67c86d06 MM |
3807 | } |
3808 | ||
15984c13 MM |
3809 | /* See target.h. */ |
3810 | ||
3811 | void | |
0cb7c7b0 | 3812 | target_call_history (int size, record_print_flags flags) |
15984c13 | 3813 | { |
170049d4 | 3814 | current_target.to_call_history (¤t_target, size, flags); |
15984c13 MM |
3815 | } |
3816 | ||
3817 | /* See target.h. */ | |
3818 | ||
3819 | void | |
0cb7c7b0 | 3820 | target_call_history_from (ULONGEST begin, int size, record_print_flags flags) |
15984c13 | 3821 | { |
16fc27d6 | 3822 | current_target.to_call_history_from (¤t_target, begin, size, flags); |
15984c13 MM |
3823 | } |
3824 | ||
3825 | /* See target.h. */ | |
3826 | ||
3827 | void | |
0cb7c7b0 | 3828 | target_call_history_range (ULONGEST begin, ULONGEST end, record_print_flags flags) |
15984c13 | 3829 | { |
115d9817 | 3830 | current_target.to_call_history_range (¤t_target, begin, end, flags); |
15984c13 MM |
3831 | } |
3832 | ||
ea001bdc MM |
3833 | /* See target.h. */ |
3834 | ||
3835 | const struct frame_unwind * | |
3836 | target_get_unwinder (void) | |
3837 | { | |
ac01945b | 3838 | return current_target.to_get_unwinder (¤t_target); |
ea001bdc MM |
3839 | } |
3840 | ||
3841 | /* See target.h. */ | |
3842 | ||
3843 | const struct frame_unwind * | |
3844 | target_get_tailcall_unwinder (void) | |
3845 | { | |
ac01945b | 3846 | return current_target.to_get_tailcall_unwinder (¤t_target); |
ea001bdc MM |
3847 | } |
3848 | ||
5fff78c4 MM |
3849 | /* See target.h. */ |
3850 | ||
3851 | void | |
3852 | target_prepare_to_generate_core (void) | |
3853 | { | |
3854 | current_target.to_prepare_to_generate_core (¤t_target); | |
3855 | } | |
3856 | ||
3857 | /* See target.h. */ | |
3858 | ||
3859 | void | |
3860 | target_done_generating_core (void) | |
3861 | { | |
3862 | current_target.to_done_generating_core (¤t_target); | |
3863 | } | |
3864 | ||
c906108c | 3865 | static void |
fba45db2 | 3866 | setup_target_debug (void) |
c906108c SS |
3867 | { |
3868 | memcpy (&debug_target, ¤t_target, sizeof debug_target); | |
3869 | ||
a7068b60 | 3870 | init_debug_target (¤t_target); |
c906108c | 3871 | } |
c906108c | 3872 | \f |
c5aa993b JM |
3873 | |
3874 | static char targ_desc[] = | |
3e43a32a MS |
3875 | "Names of targets and files being debugged.\nShows the entire \ |
3876 | stack of targets currently in use (including the exec-file,\n\ | |
c906108c SS |
3877 | core-file, and process, if any), as well as the symbol file name."; |
3878 | ||
a53f3625 | 3879 | static void |
a30bf1f1 TT |
3880 | default_rcmd (struct target_ops *self, const char *command, |
3881 | struct ui_file *output) | |
a53f3625 TT |
3882 | { |
3883 | error (_("\"monitor\" command not supported by this target.")); | |
3884 | } | |
3885 | ||
96baa820 | 3886 | static void |
0b39b52e | 3887 | do_monitor_command (const char *cmd, int from_tty) |
96baa820 | 3888 | { |
96baa820 JM |
3889 | target_rcmd (cmd, gdb_stdtarg); |
3890 | } | |
3891 | ||
78cbbba8 LM |
3892 | /* Erases all the memory regions marked as flash. CMD and FROM_TTY are |
3893 | ignored. */ | |
3894 | ||
3895 | void | |
0b39b52e | 3896 | flash_erase_command (const char *cmd, int from_tty) |
78cbbba8 LM |
3897 | { |
3898 | /* Used to communicate termination of flash operations to the target. */ | |
3899 | bool found_flash_region = false; | |
78cbbba8 LM |
3900 | struct gdbarch *gdbarch = target_gdbarch (); |
3901 | ||
a664f67e | 3902 | std::vector<mem_region> mem_regions = target_memory_map (); |
78cbbba8 LM |
3903 | |
3904 | /* Iterate over all memory regions. */ | |
a664f67e | 3905 | for (const mem_region &m : mem_regions) |
78cbbba8 | 3906 | { |
78cbbba8 | 3907 | /* Is this a flash memory region? */ |
a664f67e | 3908 | if (m.attrib.mode == MEM_FLASH) |
78cbbba8 LM |
3909 | { |
3910 | found_flash_region = true; | |
a664f67e | 3911 | target_flash_erase (m.lo, m.hi - m.lo); |
78cbbba8 | 3912 | |
76f9c9cf | 3913 | ui_out_emit_tuple tuple_emitter (current_uiout, "erased-regions"); |
78cbbba8 LM |
3914 | |
3915 | current_uiout->message (_("Erasing flash memory region at address ")); | |
a664f67e | 3916 | current_uiout->field_fmt ("address", "%s", paddress (gdbarch, m.lo)); |
78cbbba8 | 3917 | current_uiout->message (", size = "); |
a664f67e | 3918 | current_uiout->field_fmt ("size", "%s", hex_string (m.hi - m.lo)); |
78cbbba8 | 3919 | current_uiout->message ("\n"); |
78cbbba8 LM |
3920 | } |
3921 | } | |
3922 | ||
3923 | /* Did we do any flash operations? If so, we need to finalize them. */ | |
3924 | if (found_flash_region) | |
3925 | target_flash_done (); | |
3926 | else | |
3927 | current_uiout->message (_("No flash memory regions found.\n")); | |
3928 | } | |
3929 | ||
87680a14 JB |
3930 | /* Print the name of each layers of our target stack. */ |
3931 | ||
3932 | static void | |
d3cb6b99 | 3933 | maintenance_print_target_stack (const char *cmd, int from_tty) |
87680a14 JB |
3934 | { |
3935 | struct target_ops *t; | |
3936 | ||
3937 | printf_filtered (_("The current target stack is:\n")); | |
3938 | ||
3939 | for (t = target_stack; t != NULL; t = t->beneath) | |
3940 | { | |
3941 | printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname); | |
3942 | } | |
3943 | } | |
3944 | ||
372316f1 PA |
3945 | /* See target.h. */ |
3946 | ||
3947 | void | |
3948 | target_async (int enable) | |
3949 | { | |
3950 | infrun_async (enable); | |
3951 | current_target.to_async (¤t_target, enable); | |
3952 | } | |
3953 | ||
65706a29 PA |
3954 | /* See target.h. */ |
3955 | ||
3956 | void | |
3957 | target_thread_events (int enable) | |
3958 | { | |
3959 | current_target.to_thread_events (¤t_target, enable); | |
3960 | } | |
3961 | ||
329ea579 PA |
3962 | /* Controls if targets can report that they can/are async. This is |
3963 | just for maintainers to use when debugging gdb. */ | |
3964 | int target_async_permitted = 1; | |
c6ebd6cf VP |
3965 | |
3966 | /* The set command writes to this variable. If the inferior is | |
b5419e49 | 3967 | executing, target_async_permitted is *not* updated. */ |
329ea579 | 3968 | static int target_async_permitted_1 = 1; |
c6ebd6cf VP |
3969 | |
3970 | static void | |
eb4c3f4a | 3971 | maint_set_target_async_command (const char *args, int from_tty, |
329ea579 | 3972 | struct cmd_list_element *c) |
c6ebd6cf | 3973 | { |
c35b1492 | 3974 | if (have_live_inferiors ()) |
c6ebd6cf VP |
3975 | { |
3976 | target_async_permitted_1 = target_async_permitted; | |
3977 | error (_("Cannot change this setting while the inferior is running.")); | |
3978 | } | |
3979 | ||
3980 | target_async_permitted = target_async_permitted_1; | |
3981 | } | |
3982 | ||
3983 | static void | |
329ea579 PA |
3984 | maint_show_target_async_command (struct ui_file *file, int from_tty, |
3985 | struct cmd_list_element *c, | |
3986 | const char *value) | |
c6ebd6cf | 3987 | { |
3e43a32a MS |
3988 | fprintf_filtered (file, |
3989 | _("Controlling the inferior in " | |
3990 | "asynchronous mode is %s.\n"), value); | |
c6ebd6cf VP |
3991 | } |
3992 | ||
fbea99ea PA |
3993 | /* Return true if the target operates in non-stop mode even with "set |
3994 | non-stop off". */ | |
3995 | ||
3996 | static int | |
3997 | target_always_non_stop_p (void) | |
3998 | { | |
3999 | return current_target.to_always_non_stop_p (¤t_target); | |
4000 | } | |
4001 | ||
4002 | /* See target.h. */ | |
4003 | ||
4004 | int | |
4005 | target_is_non_stop_p (void) | |
4006 | { | |
4007 | return (non_stop | |
4008 | || target_non_stop_enabled == AUTO_BOOLEAN_TRUE | |
4009 | || (target_non_stop_enabled == AUTO_BOOLEAN_AUTO | |
4010 | && target_always_non_stop_p ())); | |
4011 | } | |
4012 | ||
4013 | /* Controls if targets can report that they always run in non-stop | |
4014 | mode. This is just for maintainers to use when debugging gdb. */ | |
4015 | enum auto_boolean target_non_stop_enabled = AUTO_BOOLEAN_AUTO; | |
4016 | ||
4017 | /* The set command writes to this variable. If the inferior is | |
4018 | executing, target_non_stop_enabled is *not* updated. */ | |
4019 | static enum auto_boolean target_non_stop_enabled_1 = AUTO_BOOLEAN_AUTO; | |
4020 | ||
4021 | /* Implementation of "maint set target-non-stop". */ | |
4022 | ||
4023 | static void | |
eb4c3f4a | 4024 | maint_set_target_non_stop_command (const char *args, int from_tty, |
fbea99ea PA |
4025 | struct cmd_list_element *c) |
4026 | { | |
4027 | if (have_live_inferiors ()) | |
4028 | { | |
4029 | target_non_stop_enabled_1 = target_non_stop_enabled; | |
4030 | error (_("Cannot change this setting while the inferior is running.")); | |
4031 | } | |
4032 | ||
4033 | target_non_stop_enabled = target_non_stop_enabled_1; | |
4034 | } | |
4035 | ||
4036 | /* Implementation of "maint show target-non-stop". */ | |
4037 | ||
4038 | static void | |
4039 | maint_show_target_non_stop_command (struct ui_file *file, int from_tty, | |
4040 | struct cmd_list_element *c, | |
4041 | const char *value) | |
4042 | { | |
4043 | if (target_non_stop_enabled == AUTO_BOOLEAN_AUTO) | |
4044 | fprintf_filtered (file, | |
4045 | _("Whether the target is always in non-stop mode " | |
4046 | "is %s (currently %s).\n"), value, | |
4047 | target_always_non_stop_p () ? "on" : "off"); | |
4048 | else | |
4049 | fprintf_filtered (file, | |
4050 | _("Whether the target is always in non-stop mode " | |
4051 | "is %s.\n"), value); | |
4052 | } | |
4053 | ||
d914c394 SS |
4054 | /* Temporary copies of permission settings. */ |
4055 | ||
4056 | static int may_write_registers_1 = 1; | |
4057 | static int may_write_memory_1 = 1; | |
4058 | static int may_insert_breakpoints_1 = 1; | |
4059 | static int may_insert_tracepoints_1 = 1; | |
4060 | static int may_insert_fast_tracepoints_1 = 1; | |
4061 | static int may_stop_1 = 1; | |
4062 | ||
4063 | /* Make the user-set values match the real values again. */ | |
4064 | ||
4065 | void | |
4066 | update_target_permissions (void) | |
4067 | { | |
4068 | may_write_registers_1 = may_write_registers; | |
4069 | may_write_memory_1 = may_write_memory; | |
4070 | may_insert_breakpoints_1 = may_insert_breakpoints; | |
4071 | may_insert_tracepoints_1 = may_insert_tracepoints; | |
4072 | may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints; | |
4073 | may_stop_1 = may_stop; | |
4074 | } | |
4075 | ||
4076 | /* The one function handles (most of) the permission flags in the same | |
4077 | way. */ | |
4078 | ||
4079 | static void | |
eb4c3f4a | 4080 | set_target_permissions (const char *args, int from_tty, |
d914c394 SS |
4081 | struct cmd_list_element *c) |
4082 | { | |
4083 | if (target_has_execution) | |
4084 | { | |
4085 | update_target_permissions (); | |
4086 | error (_("Cannot change this setting while the inferior is running.")); | |
4087 | } | |
4088 | ||
4089 | /* Make the real values match the user-changed values. */ | |
4090 | may_write_registers = may_write_registers_1; | |
4091 | may_insert_breakpoints = may_insert_breakpoints_1; | |
4092 | may_insert_tracepoints = may_insert_tracepoints_1; | |
4093 | may_insert_fast_tracepoints = may_insert_fast_tracepoints_1; | |
4094 | may_stop = may_stop_1; | |
4095 | update_observer_mode (); | |
4096 | } | |
4097 | ||
4098 | /* Set memory write permission independently of observer mode. */ | |
4099 | ||
4100 | static void | |
eb4c3f4a | 4101 | set_write_memory_permission (const char *args, int from_tty, |
d914c394 SS |
4102 | struct cmd_list_element *c) |
4103 | { | |
4104 | /* Make the real values match the user-changed values. */ | |
4105 | may_write_memory = may_write_memory_1; | |
4106 | update_observer_mode (); | |
4107 | } | |
4108 | ||
1b30aaa5 YQ |
4109 | #if GDB_SELF_TEST |
4110 | namespace selftests { | |
4111 | ||
4112 | static int | |
4113 | test_target_has_registers (target_ops *self) | |
4114 | { | |
4115 | return 1; | |
4116 | } | |
4117 | ||
4118 | static int | |
4119 | test_target_has_stack (target_ops *self) | |
4120 | { | |
4121 | return 1; | |
4122 | } | |
4123 | ||
4124 | static int | |
4125 | test_target_has_memory (target_ops *self) | |
4126 | { | |
4127 | return 1; | |
4128 | } | |
4129 | ||
4130 | static void | |
4131 | test_target_prepare_to_store (target_ops *self, regcache *regs) | |
4132 | { | |
4133 | } | |
4134 | ||
4135 | static void | |
4136 | test_target_store_registers (target_ops *self, regcache *regs, int regno) | |
4137 | { | |
4138 | } | |
4139 | ||
4140 | test_target_ops::test_target_ops () | |
4141 | : target_ops {} | |
4142 | { | |
4143 | to_magic = OPS_MAGIC; | |
4144 | to_stratum = process_stratum; | |
4145 | to_has_memory = test_target_has_memory; | |
4146 | to_has_stack = test_target_has_stack; | |
4147 | to_has_registers = test_target_has_registers; | |
4148 | to_prepare_to_store = test_target_prepare_to_store; | |
4149 | to_store_registers = test_target_store_registers; | |
4150 | ||
4151 | complete_target_initialization (this); | |
4152 | } | |
4153 | ||
4154 | } // namespace selftests | |
4155 | #endif /* GDB_SELF_TEST */ | |
d914c394 | 4156 | |
c906108c | 4157 | void |
fba45db2 | 4158 | initialize_targets (void) |
c906108c SS |
4159 | { |
4160 | init_dummy_target (); | |
4161 | push_target (&dummy_target); | |
4162 | ||
11db9430 SM |
4163 | add_info ("target", info_target_command, targ_desc); |
4164 | add_info ("files", info_target_command, targ_desc); | |
c906108c | 4165 | |
ccce17b0 | 4166 | add_setshow_zuinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
85c07804 AC |
4167 | Set target debugging."), _("\ |
4168 | Show target debugging."), _("\ | |
333dabeb | 4169 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
3cecbbbe TT |
4170 | verbose."), |
4171 | set_targetdebug, | |
ccce17b0 YQ |
4172 | show_targetdebug, |
4173 | &setdebuglist, &showdebuglist); | |
3a11626d | 4174 | |
2bc416ba | 4175 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
4176 | &trust_readonly, _("\ |
4177 | Set mode for reading from readonly sections."), _("\ | |
4178 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
4179 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
4180 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 4181 | result in significant performance improvement for remote targets."), |
2c5b56ce | 4182 | NULL, |
920d2a44 | 4183 | show_trust_readonly, |
e707bbc2 | 4184 | &setlist, &showlist); |
96baa820 JM |
4185 | |
4186 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 4187 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 4188 | |
87680a14 JB |
4189 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
4190 | _("Print the name of each layer of the internal target stack."), | |
4191 | &maintenanceprintlist); | |
4192 | ||
c6ebd6cf VP |
4193 | add_setshow_boolean_cmd ("target-async", no_class, |
4194 | &target_async_permitted_1, _("\ | |
4195 | Set whether gdb controls the inferior in asynchronous mode."), _("\ | |
4196 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
4197 | Tells gdb whether to control the inferior in asynchronous mode."), | |
329ea579 PA |
4198 | maint_set_target_async_command, |
4199 | maint_show_target_async_command, | |
4200 | &maintenance_set_cmdlist, | |
4201 | &maintenance_show_cmdlist); | |
c6ebd6cf | 4202 | |
fbea99ea PA |
4203 | add_setshow_auto_boolean_cmd ("target-non-stop", no_class, |
4204 | &target_non_stop_enabled_1, _("\ | |
4205 | Set whether gdb always controls the inferior in non-stop mode."), _("\ | |
4206 | Show whether gdb always controls the inferior in non-stop mode."), _("\ | |
4207 | Tells gdb whether to control the inferior in non-stop mode."), | |
4208 | maint_set_target_non_stop_command, | |
4209 | maint_show_target_non_stop_command, | |
4210 | &maintenance_set_cmdlist, | |
4211 | &maintenance_show_cmdlist); | |
4212 | ||
d914c394 SS |
4213 | add_setshow_boolean_cmd ("may-write-registers", class_support, |
4214 | &may_write_registers_1, _("\ | |
4215 | Set permission to write into registers."), _("\ | |
4216 | Show permission to write into registers."), _("\ | |
4217 | When this permission is on, GDB may write into the target's registers.\n\ | |
4218 | Otherwise, any sort of write attempt will result in an error."), | |
4219 | set_target_permissions, NULL, | |
4220 | &setlist, &showlist); | |
4221 | ||
4222 | add_setshow_boolean_cmd ("may-write-memory", class_support, | |
4223 | &may_write_memory_1, _("\ | |
4224 | Set permission to write into target memory."), _("\ | |
4225 | Show permission to write into target memory."), _("\ | |
4226 | When this permission is on, GDB may write into the target's memory.\n\ | |
4227 | Otherwise, any sort of write attempt will result in an error."), | |
4228 | set_write_memory_permission, NULL, | |
4229 | &setlist, &showlist); | |
4230 | ||
4231 | add_setshow_boolean_cmd ("may-insert-breakpoints", class_support, | |
4232 | &may_insert_breakpoints_1, _("\ | |
4233 | Set permission to insert breakpoints in the target."), _("\ | |
4234 | Show permission to insert breakpoints in the target."), _("\ | |
4235 | When this permission is on, GDB may insert breakpoints in the program.\n\ | |
4236 | Otherwise, any sort of insertion attempt will result in an error."), | |
4237 | set_target_permissions, NULL, | |
4238 | &setlist, &showlist); | |
4239 | ||
4240 | add_setshow_boolean_cmd ("may-insert-tracepoints", class_support, | |
4241 | &may_insert_tracepoints_1, _("\ | |
4242 | Set permission to insert tracepoints in the target."), _("\ | |
4243 | Show permission to insert tracepoints in the target."), _("\ | |
4244 | When this permission is on, GDB may insert tracepoints in the program.\n\ | |
4245 | Otherwise, any sort of insertion attempt will result in an error."), | |
4246 | set_target_permissions, NULL, | |
4247 | &setlist, &showlist); | |
4248 | ||
4249 | add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support, | |
4250 | &may_insert_fast_tracepoints_1, _("\ | |
4251 | Set permission to insert fast tracepoints in the target."), _("\ | |
4252 | Show permission to insert fast tracepoints in the target."), _("\ | |
4253 | When this permission is on, GDB may insert fast tracepoints.\n\ | |
4254 | Otherwise, any sort of insertion attempt will result in an error."), | |
4255 | set_target_permissions, NULL, | |
4256 | &setlist, &showlist); | |
4257 | ||
4258 | add_setshow_boolean_cmd ("may-interrupt", class_support, | |
4259 | &may_stop_1, _("\ | |
4260 | Set permission to interrupt or signal the target."), _("\ | |
4261 | Show permission to interrupt or signal the target."), _("\ | |
4262 | When this permission is on, GDB may interrupt/stop the target's execution.\n\ | |
4263 | Otherwise, any attempt to interrupt or stop will be ignored."), | |
4264 | set_target_permissions, NULL, | |
4265 | &setlist, &showlist); | |
6a3cb8e8 | 4266 | |
78cbbba8 LM |
4267 | add_com ("flash-erase", no_class, flash_erase_command, |
4268 | _("Erase all flash memory regions.")); | |
4269 | ||
6a3cb8e8 PA |
4270 | add_setshow_boolean_cmd ("auto-connect-native-target", class_support, |
4271 | &auto_connect_native_target, _("\ | |
4272 | Set whether GDB may automatically connect to the native target."), _("\ | |
4273 | Show whether GDB may automatically connect to the native target."), _("\ | |
4274 | When on, and GDB is not connected to a target yet, GDB\n\ | |
4275 | attempts \"run\" and other commands with the native target."), | |
4276 | NULL, show_auto_connect_native_target, | |
4277 | &setlist, &showlist); | |
c906108c | 4278 | } |