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 | |
e83e4e24 TT |
996 | target_read_string (CORE_ADDR memaddr, gdb::unique_xmalloc_ptr<char> *string, |
997 | int len, int *errnop) | |
c906108c | 998 | { |
c2e8b827 | 999 | int tlen, offset, i; |
1b0ba102 | 1000 | gdb_byte buf[4]; |
c906108c SS |
1001 | int errcode = 0; |
1002 | char *buffer; | |
1003 | int buffer_allocated; | |
1004 | char *bufptr; | |
1005 | unsigned int nbytes_read = 0; | |
1006 | ||
6217bf3e MS |
1007 | gdb_assert (string); |
1008 | ||
c906108c SS |
1009 | /* Small for testing. */ |
1010 | buffer_allocated = 4; | |
224c3ddb | 1011 | buffer = (char *) xmalloc (buffer_allocated); |
c906108c SS |
1012 | bufptr = buffer; |
1013 | ||
c906108c SS |
1014 | while (len > 0) |
1015 | { | |
1016 | tlen = MIN (len, 4 - (memaddr & 3)); | |
1017 | offset = memaddr & 3; | |
1018 | ||
1b0ba102 | 1019 | errcode = target_read_memory (memaddr & ~3, buf, sizeof buf); |
c906108c SS |
1020 | if (errcode != 0) |
1021 | { | |
1022 | /* The transfer request might have crossed the boundary to an | |
c378eb4e | 1023 | unallocated region of memory. Retry the transfer, requesting |
c906108c SS |
1024 | a single byte. */ |
1025 | tlen = 1; | |
1026 | offset = 0; | |
b8eb5af0 | 1027 | errcode = target_read_memory (memaddr, buf, 1); |
c906108c SS |
1028 | if (errcode != 0) |
1029 | goto done; | |
1030 | } | |
1031 | ||
1032 | if (bufptr - buffer + tlen > buffer_allocated) | |
1033 | { | |
1034 | unsigned int bytes; | |
5d502164 | 1035 | |
c906108c SS |
1036 | bytes = bufptr - buffer; |
1037 | buffer_allocated *= 2; | |
224c3ddb | 1038 | buffer = (char *) xrealloc (buffer, buffer_allocated); |
c906108c SS |
1039 | bufptr = buffer + bytes; |
1040 | } | |
1041 | ||
1042 | for (i = 0; i < tlen; i++) | |
1043 | { | |
1044 | *bufptr++ = buf[i + offset]; | |
1045 | if (buf[i + offset] == '\000') | |
1046 | { | |
1047 | nbytes_read += i + 1; | |
1048 | goto done; | |
1049 | } | |
1050 | } | |
1051 | ||
1052 | memaddr += tlen; | |
1053 | len -= tlen; | |
1054 | nbytes_read += tlen; | |
1055 | } | |
c5aa993b | 1056 | done: |
e83e4e24 | 1057 | string->reset (buffer); |
c906108c SS |
1058 | if (errnop != NULL) |
1059 | *errnop = errcode; | |
c906108c SS |
1060 | return nbytes_read; |
1061 | } | |
1062 | ||
07b82ea5 PA |
1063 | struct target_section_table * |
1064 | target_get_section_table (struct target_ops *target) | |
1065 | { | |
7e35c012 | 1066 | return (*target->to_get_section_table) (target); |
07b82ea5 PA |
1067 | } |
1068 | ||
8db32d44 | 1069 | /* Find a section containing ADDR. */ |
07b82ea5 | 1070 | |
0542c86d | 1071 | struct target_section * |
8db32d44 AC |
1072 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
1073 | { | |
07b82ea5 | 1074 | struct target_section_table *table = target_get_section_table (target); |
0542c86d | 1075 | struct target_section *secp; |
07b82ea5 PA |
1076 | |
1077 | if (table == NULL) | |
1078 | return NULL; | |
1079 | ||
1080 | for (secp = table->sections; secp < table->sections_end; secp++) | |
8db32d44 AC |
1081 | { |
1082 | if (addr >= secp->addr && addr < secp->endaddr) | |
1083 | return secp; | |
1084 | } | |
1085 | return NULL; | |
1086 | } | |
1087 | ||
0fec99e8 PA |
1088 | |
1089 | /* Helper for the memory xfer routines. Checks the attributes of the | |
1090 | memory region of MEMADDR against the read or write being attempted. | |
1091 | If the access is permitted returns true, otherwise returns false. | |
1092 | REGION_P is an optional output parameter. If not-NULL, it is | |
1093 | filled with a pointer to the memory region of MEMADDR. REG_LEN | |
1094 | returns LEN trimmed to the end of the region. This is how much the | |
1095 | caller can continue requesting, if the access is permitted. A | |
1096 | single xfer request must not straddle memory region boundaries. */ | |
1097 | ||
1098 | static int | |
1099 | memory_xfer_check_region (gdb_byte *readbuf, const gdb_byte *writebuf, | |
1100 | ULONGEST memaddr, ULONGEST len, ULONGEST *reg_len, | |
1101 | struct mem_region **region_p) | |
1102 | { | |
1103 | struct mem_region *region; | |
1104 | ||
1105 | region = lookup_mem_region (memaddr); | |
1106 | ||
1107 | if (region_p != NULL) | |
1108 | *region_p = region; | |
1109 | ||
1110 | switch (region->attrib.mode) | |
1111 | { | |
1112 | case MEM_RO: | |
1113 | if (writebuf != NULL) | |
1114 | return 0; | |
1115 | break; | |
1116 | ||
1117 | case MEM_WO: | |
1118 | if (readbuf != NULL) | |
1119 | return 0; | |
1120 | break; | |
1121 | ||
1122 | case MEM_FLASH: | |
1123 | /* We only support writing to flash during "load" for now. */ | |
1124 | if (writebuf != NULL) | |
1125 | error (_("Writing to flash memory forbidden in this context")); | |
1126 | break; | |
1127 | ||
1128 | case MEM_NONE: | |
1129 | return 0; | |
1130 | } | |
1131 | ||
1132 | /* region->hi == 0 means there's no upper bound. */ | |
1133 | if (memaddr + len < region->hi || region->hi == 0) | |
1134 | *reg_len = len; | |
1135 | else | |
1136 | *reg_len = region->hi - memaddr; | |
1137 | ||
1138 | return 1; | |
1139 | } | |
1140 | ||
9f713294 YQ |
1141 | /* Read memory from more than one valid target. A core file, for |
1142 | instance, could have some of memory but delegate other bits to | |
1143 | the target below it. So, we must manually try all targets. */ | |
1144 | ||
cc9f16aa | 1145 | enum target_xfer_status |
17fde6d0 | 1146 | raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf, |
9b409511 YQ |
1147 | const gdb_byte *writebuf, ULONGEST memaddr, LONGEST len, |
1148 | ULONGEST *xfered_len) | |
9f713294 | 1149 | { |
9b409511 | 1150 | enum target_xfer_status res; |
9f713294 YQ |
1151 | |
1152 | do | |
1153 | { | |
1154 | res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 YQ |
1155 | readbuf, writebuf, memaddr, len, |
1156 | xfered_len); | |
1157 | if (res == TARGET_XFER_OK) | |
9f713294 YQ |
1158 | break; |
1159 | ||
633785ff | 1160 | /* Stop if the target reports that the memory is not available. */ |
bc113b4e | 1161 | if (res == TARGET_XFER_UNAVAILABLE) |
633785ff MM |
1162 | break; |
1163 | ||
9f713294 YQ |
1164 | /* We want to continue past core files to executables, but not |
1165 | past a running target's memory. */ | |
1166 | if (ops->to_has_all_memory (ops)) | |
1167 | break; | |
1168 | ||
1169 | ops = ops->beneath; | |
1170 | } | |
1171 | while (ops != NULL); | |
1172 | ||
0f26cec1 PA |
1173 | /* The cache works at the raw memory level. Make sure the cache |
1174 | gets updated with raw contents no matter what kind of memory | |
1175 | object was originally being written. Note we do write-through | |
1176 | first, so that if it fails, we don't write to the cache contents | |
1177 | that never made it to the target. */ | |
1178 | if (writebuf != NULL | |
1179 | && !ptid_equal (inferior_ptid, null_ptid) | |
1180 | && target_dcache_init_p () | |
1181 | && (stack_cache_enabled_p () || code_cache_enabled_p ())) | |
1182 | { | |
1183 | DCACHE *dcache = target_dcache_get (); | |
1184 | ||
1185 | /* Note that writing to an area of memory which wasn't present | |
1186 | in the cache doesn't cause it to be loaded in. */ | |
1187 | dcache_update (dcache, res, memaddr, writebuf, *xfered_len); | |
1188 | } | |
1189 | ||
9f713294 YQ |
1190 | return res; |
1191 | } | |
1192 | ||
7f79c47e DE |
1193 | /* Perform a partial memory transfer. |
1194 | For docs see target.h, to_xfer_partial. */ | |
cf7a04e8 | 1195 | |
9b409511 | 1196 | static enum target_xfer_status |
f0ba3972 | 1197 | memory_xfer_partial_1 (struct target_ops *ops, enum target_object object, |
17fde6d0 | 1198 | gdb_byte *readbuf, const gdb_byte *writebuf, ULONGEST memaddr, |
9b409511 | 1199 | ULONGEST len, ULONGEST *xfered_len) |
0779438d | 1200 | { |
9b409511 | 1201 | enum target_xfer_status res; |
0fec99e8 | 1202 | ULONGEST reg_len; |
cf7a04e8 | 1203 | struct mem_region *region; |
4e5d721f | 1204 | struct inferior *inf; |
cf7a04e8 | 1205 | |
07b82ea5 PA |
1206 | /* For accesses to unmapped overlay sections, read directly from |
1207 | files. Must do this first, as MEMADDR may need adjustment. */ | |
1208 | if (readbuf != NULL && overlay_debugging) | |
1209 | { | |
1210 | struct obj_section *section = find_pc_overlay (memaddr); | |
5d502164 | 1211 | |
07b82ea5 PA |
1212 | if (pc_in_unmapped_range (memaddr, section)) |
1213 | { | |
1214 | struct target_section_table *table | |
1215 | = target_get_section_table (ops); | |
1216 | const char *section_name = section->the_bfd_section->name; | |
5d502164 | 1217 | |
07b82ea5 PA |
1218 | memaddr = overlay_mapped_address (memaddr, section); |
1219 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 1220 | memaddr, len, xfered_len, |
07b82ea5 PA |
1221 | table->sections, |
1222 | table->sections_end, | |
1223 | section_name); | |
1224 | } | |
1225 | } | |
1226 | ||
1227 | /* Try the executable files, if "trust-readonly-sections" is set. */ | |
cf7a04e8 DJ |
1228 | if (readbuf != NULL && trust_readonly) |
1229 | { | |
0542c86d | 1230 | struct target_section *secp; |
07b82ea5 | 1231 | struct target_section_table *table; |
cf7a04e8 DJ |
1232 | |
1233 | secp = target_section_by_addr (ops, memaddr); | |
1234 | if (secp != NULL | |
2b2848e2 DE |
1235 | && (bfd_get_section_flags (secp->the_bfd_section->owner, |
1236 | secp->the_bfd_section) | |
cf7a04e8 | 1237 | & SEC_READONLY)) |
07b82ea5 PA |
1238 | { |
1239 | table = target_get_section_table (ops); | |
1240 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 1241 | memaddr, len, xfered_len, |
07b82ea5 PA |
1242 | table->sections, |
1243 | table->sections_end, | |
1244 | NULL); | |
1245 | } | |
98646950 UW |
1246 | } |
1247 | ||
cf7a04e8 | 1248 | /* Try GDB's internal data cache. */ |
cf7a04e8 | 1249 | |
0fec99e8 PA |
1250 | if (!memory_xfer_check_region (readbuf, writebuf, memaddr, len, ®_len, |
1251 | ®ion)) | |
1252 | return TARGET_XFER_E_IO; | |
cf7a04e8 | 1253 | |
6c95b8df | 1254 | if (!ptid_equal (inferior_ptid, null_ptid)) |
c9657e70 | 1255 | inf = find_inferior_ptid (inferior_ptid); |
6c95b8df PA |
1256 | else |
1257 | inf = NULL; | |
4e5d721f DE |
1258 | |
1259 | if (inf != NULL | |
0f26cec1 | 1260 | && readbuf != NULL |
2f4d8875 PA |
1261 | /* The dcache reads whole cache lines; that doesn't play well |
1262 | with reading from a trace buffer, because reading outside of | |
1263 | the collected memory range fails. */ | |
1264 | && get_traceframe_number () == -1 | |
4e5d721f | 1265 | && (region->attrib.cache |
29453a14 YQ |
1266 | || (stack_cache_enabled_p () && object == TARGET_OBJECT_STACK_MEMORY) |
1267 | || (code_cache_enabled_p () && object == TARGET_OBJECT_CODE_MEMORY))) | |
cf7a04e8 | 1268 | { |
2a2f9fe4 YQ |
1269 | DCACHE *dcache = target_dcache_get_or_init (); |
1270 | ||
0f26cec1 PA |
1271 | return dcache_read_memory_partial (ops, dcache, memaddr, readbuf, |
1272 | reg_len, xfered_len); | |
cf7a04e8 DJ |
1273 | } |
1274 | ||
1275 | /* If none of those methods found the memory we wanted, fall back | |
1276 | to a target partial transfer. Normally a single call to | |
1277 | to_xfer_partial is enough; if it doesn't recognize an object | |
1278 | it will call the to_xfer_partial of the next target down. | |
1279 | But for memory this won't do. Memory is the only target | |
9b409511 YQ |
1280 | object which can be read from more than one valid target. |
1281 | A core file, for instance, could have some of memory but | |
1282 | delegate other bits to the target below it. So, we must | |
1283 | manually try all targets. */ | |
1284 | ||
1285 | res = raw_memory_xfer_partial (ops, readbuf, writebuf, memaddr, reg_len, | |
1286 | xfered_len); | |
cf7a04e8 DJ |
1287 | |
1288 | /* If we still haven't got anything, return the last error. We | |
1289 | give up. */ | |
1290 | return res; | |
0779438d AC |
1291 | } |
1292 | ||
f0ba3972 PA |
1293 | /* Perform a partial memory transfer. For docs see target.h, |
1294 | to_xfer_partial. */ | |
1295 | ||
9b409511 | 1296 | static enum target_xfer_status |
f0ba3972 | 1297 | memory_xfer_partial (struct target_ops *ops, enum target_object object, |
9b409511 YQ |
1298 | gdb_byte *readbuf, const gdb_byte *writebuf, |
1299 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) | |
f0ba3972 | 1300 | { |
9b409511 | 1301 | enum target_xfer_status res; |
f0ba3972 PA |
1302 | |
1303 | /* Zero length requests are ok and require no work. */ | |
1304 | if (len == 0) | |
9b409511 | 1305 | return TARGET_XFER_EOF; |
f0ba3972 | 1306 | |
a738ea1d YQ |
1307 | memaddr = address_significant (target_gdbarch (), memaddr); |
1308 | ||
f0ba3972 PA |
1309 | /* Fill in READBUF with breakpoint shadows, or WRITEBUF with |
1310 | breakpoint insns, thus hiding out from higher layers whether | |
1311 | there are software breakpoints inserted in the code stream. */ | |
1312 | if (readbuf != NULL) | |
1313 | { | |
9b409511 YQ |
1314 | res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len, |
1315 | xfered_len); | |
f0ba3972 | 1316 | |
9b409511 | 1317 | if (res == TARGET_XFER_OK && !show_memory_breakpoints) |
c63528fc | 1318 | breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, *xfered_len); |
f0ba3972 PA |
1319 | } |
1320 | else | |
1321 | { | |
67c059c2 AB |
1322 | /* A large write request is likely to be partially satisfied |
1323 | by memory_xfer_partial_1. We will continually malloc | |
1324 | and free a copy of the entire write request for breakpoint | |
1325 | shadow handling even though we only end up writing a small | |
09c98b44 DB |
1326 | subset of it. Cap writes to a limit specified by the target |
1327 | to mitigate this. */ | |
325fac50 | 1328 | len = std::min (ops->to_get_memory_xfer_limit (ops), len); |
67c059c2 | 1329 | |
26fcd5d7 TT |
1330 | gdb::byte_vector buf (writebuf, writebuf + len); |
1331 | breakpoint_xfer_memory (NULL, buf.data (), writebuf, memaddr, len); | |
1332 | res = memory_xfer_partial_1 (ops, object, NULL, buf.data (), memaddr, len, | |
9b409511 | 1333 | xfered_len); |
f0ba3972 PA |
1334 | } |
1335 | ||
1336 | return res; | |
1337 | } | |
1338 | ||
cb85b21b TT |
1339 | scoped_restore_tmpl<int> |
1340 | make_scoped_restore_show_memory_breakpoints (int show) | |
8defab1a | 1341 | { |
cb85b21b | 1342 | return make_scoped_restore (&show_memory_breakpoints, show); |
8defab1a DJ |
1343 | } |
1344 | ||
7f79c47e DE |
1345 | /* For docs see target.h, to_xfer_partial. */ |
1346 | ||
9b409511 | 1347 | enum target_xfer_status |
27394598 AC |
1348 | target_xfer_partial (struct target_ops *ops, |
1349 | enum target_object object, const char *annex, | |
4ac248ca | 1350 | gdb_byte *readbuf, const gdb_byte *writebuf, |
9b409511 YQ |
1351 | ULONGEST offset, ULONGEST len, |
1352 | ULONGEST *xfered_len) | |
27394598 | 1353 | { |
9b409511 | 1354 | enum target_xfer_status retval; |
27394598 AC |
1355 | |
1356 | gdb_assert (ops->to_xfer_partial != NULL); | |
cf7a04e8 | 1357 | |
ce6d0892 YQ |
1358 | /* Transfer is done when LEN is zero. */ |
1359 | if (len == 0) | |
9b409511 | 1360 | return TARGET_XFER_EOF; |
ce6d0892 | 1361 | |
d914c394 SS |
1362 | if (writebuf && !may_write_memory) |
1363 | error (_("Writing to memory is not allowed (addr %s, len %s)"), | |
1364 | core_addr_to_string_nz (offset), plongest (len)); | |
1365 | ||
9b409511 YQ |
1366 | *xfered_len = 0; |
1367 | ||
cf7a04e8 DJ |
1368 | /* If this is a memory transfer, let the memory-specific code |
1369 | have a look at it instead. Memory transfers are more | |
1370 | complicated. */ | |
29453a14 YQ |
1371 | if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY |
1372 | || object == TARGET_OBJECT_CODE_MEMORY) | |
4e5d721f | 1373 | retval = memory_xfer_partial (ops, object, readbuf, |
9b409511 | 1374 | writebuf, offset, len, xfered_len); |
9f713294 | 1375 | else if (object == TARGET_OBJECT_RAW_MEMORY) |
cf7a04e8 | 1376 | { |
0fec99e8 PA |
1377 | /* Skip/avoid accessing the target if the memory region |
1378 | attributes block the access. Check this here instead of in | |
1379 | raw_memory_xfer_partial as otherwise we'd end up checking | |
1380 | this twice in the case of the memory_xfer_partial path is | |
1381 | taken; once before checking the dcache, and another in the | |
1382 | tail call to raw_memory_xfer_partial. */ | |
1383 | if (!memory_xfer_check_region (readbuf, writebuf, offset, len, &len, | |
1384 | NULL)) | |
1385 | return TARGET_XFER_E_IO; | |
1386 | ||
9f713294 | 1387 | /* Request the normal memory object from other layers. */ |
9b409511 YQ |
1388 | retval = raw_memory_xfer_partial (ops, readbuf, writebuf, offset, len, |
1389 | xfered_len); | |
cf7a04e8 | 1390 | } |
9f713294 YQ |
1391 | else |
1392 | retval = ops->to_xfer_partial (ops, object, annex, readbuf, | |
9b409511 | 1393 | writebuf, offset, len, xfered_len); |
cf7a04e8 | 1394 | |
27394598 AC |
1395 | if (targetdebug) |
1396 | { | |
1397 | const unsigned char *myaddr = NULL; | |
1398 | ||
1399 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a | 1400 | "%s:target_xfer_partial " |
9b409511 | 1401 | "(%d, %s, %s, %s, %s, %s) = %d, %s", |
27394598 AC |
1402 | ops->to_shortname, |
1403 | (int) object, | |
1404 | (annex ? annex : "(null)"), | |
53b71562 JB |
1405 | host_address_to_string (readbuf), |
1406 | host_address_to_string (writebuf), | |
0b1553bc | 1407 | core_addr_to_string_nz (offset), |
9b409511 YQ |
1408 | pulongest (len), retval, |
1409 | pulongest (*xfered_len)); | |
27394598 AC |
1410 | |
1411 | if (readbuf) | |
1412 | myaddr = readbuf; | |
1413 | if (writebuf) | |
1414 | myaddr = writebuf; | |
9b409511 | 1415 | if (retval == TARGET_XFER_OK && myaddr != NULL) |
27394598 AC |
1416 | { |
1417 | int i; | |
2bc416ba | 1418 | |
27394598 | 1419 | fputs_unfiltered (", bytes =", gdb_stdlog); |
9b409511 | 1420 | for (i = 0; i < *xfered_len; i++) |
27394598 | 1421 | { |
53b71562 | 1422 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1423 | { |
1424 | if (targetdebug < 2 && i > 0) | |
1425 | { | |
1426 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
1427 | break; | |
1428 | } | |
1429 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1430 | } | |
2bc416ba | 1431 | |
27394598 AC |
1432 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
1433 | } | |
1434 | } | |
2bc416ba | 1435 | |
27394598 AC |
1436 | fputc_unfiltered ('\n', gdb_stdlog); |
1437 | } | |
9b409511 YQ |
1438 | |
1439 | /* Check implementations of to_xfer_partial update *XFERED_LEN | |
1440 | properly. Do assertion after printing debug messages, so that we | |
1441 | can find more clues on assertion failure from debugging messages. */ | |
bc113b4e | 1442 | if (retval == TARGET_XFER_OK || retval == TARGET_XFER_UNAVAILABLE) |
9b409511 YQ |
1443 | gdb_assert (*xfered_len > 0); |
1444 | ||
27394598 AC |
1445 | return retval; |
1446 | } | |
1447 | ||
578d3588 PA |
1448 | /* Read LEN bytes of target memory at address MEMADDR, placing the |
1449 | results in GDB's memory at MYADDR. Returns either 0 for success or | |
d09f2c3f | 1450 | -1 if any error occurs. |
c906108c SS |
1451 | |
1452 | If an error occurs, no guarantee is made about the contents of the data at | |
1453 | MYADDR. In particular, the caller should not depend upon partial reads | |
1454 | filling the buffer with good data. There is no way for the caller to know | |
1455 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 | 1456 | deal with partial reads should call target_read (which will retry until |
c378eb4e | 1457 | it makes no progress, and then return how much was transferred). */ |
c906108c SS |
1458 | |
1459 | int | |
1b162304 | 1460 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
c906108c | 1461 | { |
c35b1492 PA |
1462 | /* Dispatch to the topmost target, not the flattened current_target. |
1463 | Memory accesses check target->to_has_(all_)memory, and the | |
1464 | flattened target doesn't inherit those. */ | |
1465 | if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1466 | myaddr, memaddr, len) == len) |
1467 | return 0; | |
0779438d | 1468 | else |
d09f2c3f | 1469 | return -1; |
c906108c SS |
1470 | } |
1471 | ||
721ec300 GB |
1472 | /* See target/target.h. */ |
1473 | ||
1474 | int | |
1475 | target_read_uint32 (CORE_ADDR memaddr, uint32_t *result) | |
1476 | { | |
1477 | gdb_byte buf[4]; | |
1478 | int r; | |
1479 | ||
1480 | r = target_read_memory (memaddr, buf, sizeof buf); | |
1481 | if (r != 0) | |
1482 | return r; | |
1483 | *result = extract_unsigned_integer (buf, sizeof buf, | |
1484 | gdbarch_byte_order (target_gdbarch ())); | |
1485 | return 0; | |
1486 | } | |
1487 | ||
aee4bf85 PA |
1488 | /* Like target_read_memory, but specify explicitly that this is a read |
1489 | from the target's raw memory. That is, this read bypasses the | |
1490 | dcache, breakpoint shadowing, etc. */ | |
1491 | ||
1492 | int | |
1493 | target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1494 | { | |
1495 | /* See comment in target_read_memory about why the request starts at | |
1496 | current_target.beneath. */ | |
1497 | if (target_read (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, | |
1498 | myaddr, memaddr, len) == len) | |
1499 | return 0; | |
1500 | else | |
d09f2c3f | 1501 | return -1; |
aee4bf85 PA |
1502 | } |
1503 | ||
4e5d721f DE |
1504 | /* Like target_read_memory, but specify explicitly that this is a read from |
1505 | the target's stack. This may trigger different cache behavior. */ | |
1506 | ||
1507 | int | |
45aa4659 | 1508 | target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
4e5d721f | 1509 | { |
aee4bf85 PA |
1510 | /* See comment in target_read_memory about why the request starts at |
1511 | current_target.beneath. */ | |
4e5d721f DE |
1512 | if (target_read (current_target.beneath, TARGET_OBJECT_STACK_MEMORY, NULL, |
1513 | myaddr, memaddr, len) == len) | |
1514 | return 0; | |
1515 | else | |
d09f2c3f | 1516 | return -1; |
4e5d721f DE |
1517 | } |
1518 | ||
29453a14 YQ |
1519 | /* Like target_read_memory, but specify explicitly that this is a read from |
1520 | the target's code. This may trigger different cache behavior. */ | |
1521 | ||
1522 | int | |
1523 | target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1524 | { | |
aee4bf85 PA |
1525 | /* See comment in target_read_memory about why the request starts at |
1526 | current_target.beneath. */ | |
29453a14 YQ |
1527 | if (target_read (current_target.beneath, TARGET_OBJECT_CODE_MEMORY, NULL, |
1528 | myaddr, memaddr, len) == len) | |
1529 | return 0; | |
1530 | else | |
d09f2c3f | 1531 | return -1; |
29453a14 YQ |
1532 | } |
1533 | ||
7f79c47e | 1534 | /* Write LEN bytes from MYADDR to target memory at address MEMADDR. |
d09f2c3f PA |
1535 | Returns either 0 for success or -1 if any error occurs. If an |
1536 | error occurs, no guarantee is made about how much data got written. | |
1537 | Callers that can deal with partial writes should call | |
1538 | target_write. */ | |
7f79c47e | 1539 | |
c906108c | 1540 | int |
45aa4659 | 1541 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
c906108c | 1542 | { |
aee4bf85 PA |
1543 | /* See comment in target_read_memory about why the request starts at |
1544 | current_target.beneath. */ | |
c35b1492 | 1545 | if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, |
cf7a04e8 DJ |
1546 | myaddr, memaddr, len) == len) |
1547 | return 0; | |
0779438d | 1548 | else |
d09f2c3f | 1549 | return -1; |
c906108c | 1550 | } |
c5aa993b | 1551 | |
f0ba3972 | 1552 | /* Write LEN bytes from MYADDR to target raw memory at address |
d09f2c3f PA |
1553 | MEMADDR. Returns either 0 for success or -1 if any error occurs. |
1554 | If an error occurs, no guarantee is made about how much data got | |
1555 | written. Callers that can deal with partial writes should call | |
1556 | target_write. */ | |
f0ba3972 PA |
1557 | |
1558 | int | |
45aa4659 | 1559 | target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
f0ba3972 | 1560 | { |
aee4bf85 PA |
1561 | /* See comment in target_read_memory about why the request starts at |
1562 | current_target.beneath. */ | |
f0ba3972 PA |
1563 | if (target_write (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, |
1564 | myaddr, memaddr, len) == len) | |
1565 | return 0; | |
1566 | else | |
d09f2c3f | 1567 | return -1; |
f0ba3972 PA |
1568 | } |
1569 | ||
fd79ecee DJ |
1570 | /* Fetch the target's memory map. */ |
1571 | ||
a664f67e | 1572 | std::vector<mem_region> |
fd79ecee DJ |
1573 | target_memory_map (void) |
1574 | { | |
a664f67e SM |
1575 | std::vector<mem_region> result |
1576 | = current_target.to_memory_map (¤t_target); | |
1577 | if (result.empty ()) | |
1578 | return result; | |
fd79ecee | 1579 | |
a664f67e | 1580 | std::sort (result.begin (), result.end ()); |
fd79ecee DJ |
1581 | |
1582 | /* Check that regions do not overlap. Simultaneously assign | |
1583 | a numbering for the "mem" commands to use to refer to | |
1584 | each region. */ | |
a664f67e SM |
1585 | mem_region *last_one = NULL; |
1586 | for (size_t ix = 0; ix < result.size (); ix++) | |
fd79ecee | 1587 | { |
a664f67e | 1588 | mem_region *this_one = &result[ix]; |
fd79ecee DJ |
1589 | this_one->number = ix; |
1590 | ||
a664f67e | 1591 | if (last_one != NULL && last_one->hi > this_one->lo) |
fd79ecee DJ |
1592 | { |
1593 | warning (_("Overlapping regions in memory map: ignoring")); | |
a664f67e | 1594 | return std::vector<mem_region> (); |
fd79ecee | 1595 | } |
a664f67e | 1596 | |
fd79ecee DJ |
1597 | last_one = this_one; |
1598 | } | |
1599 | ||
1600 | return result; | |
1601 | } | |
1602 | ||
a76d924d DJ |
1603 | void |
1604 | target_flash_erase (ULONGEST address, LONGEST length) | |
1605 | { | |
e8a6c6ac | 1606 | current_target.to_flash_erase (¤t_target, address, length); |
a76d924d DJ |
1607 | } |
1608 | ||
1609 | void | |
1610 | target_flash_done (void) | |
1611 | { | |
f6fb2925 | 1612 | current_target.to_flash_done (¤t_target); |
a76d924d DJ |
1613 | } |
1614 | ||
920d2a44 AC |
1615 | static void |
1616 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1617 | struct cmd_list_element *c, const char *value) | |
1618 | { | |
3e43a32a MS |
1619 | fprintf_filtered (file, |
1620 | _("Mode for reading from readonly sections is %s.\n"), | |
920d2a44 AC |
1621 | value); |
1622 | } | |
3a11626d | 1623 | |
7f79c47e | 1624 | /* Target vector read/write partial wrapper functions. */ |
0088c768 | 1625 | |
9b409511 | 1626 | static enum target_xfer_status |
1e3ff5ad AC |
1627 | target_read_partial (struct target_ops *ops, |
1628 | enum target_object object, | |
1b0ba102 | 1629 | const char *annex, gdb_byte *buf, |
9b409511 YQ |
1630 | ULONGEST offset, ULONGEST len, |
1631 | ULONGEST *xfered_len) | |
1e3ff5ad | 1632 | { |
9b409511 YQ |
1633 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len, |
1634 | xfered_len); | |
1e3ff5ad AC |
1635 | } |
1636 | ||
8a55ffb0 | 1637 | static enum target_xfer_status |
1e3ff5ad AC |
1638 | target_write_partial (struct target_ops *ops, |
1639 | enum target_object object, | |
1b0ba102 | 1640 | const char *annex, const gdb_byte *buf, |
9b409511 | 1641 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len) |
1e3ff5ad | 1642 | { |
9b409511 YQ |
1643 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len, |
1644 | xfered_len); | |
1e3ff5ad AC |
1645 | } |
1646 | ||
1647 | /* Wrappers to perform the full transfer. */ | |
7f79c47e DE |
1648 | |
1649 | /* For docs on target_read see target.h. */ | |
1650 | ||
1e3ff5ad AC |
1651 | LONGEST |
1652 | target_read (struct target_ops *ops, | |
1653 | enum target_object object, | |
1b0ba102 | 1654 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1655 | ULONGEST offset, LONGEST len) |
1656 | { | |
279a6fed | 1657 | LONGEST xfered_total = 0; |
d309493c SM |
1658 | int unit_size = 1; |
1659 | ||
1660 | /* If we are reading from a memory object, find the length of an addressable | |
1661 | unit for that architecture. */ | |
1662 | if (object == TARGET_OBJECT_MEMORY | |
1663 | || object == TARGET_OBJECT_STACK_MEMORY | |
1664 | || object == TARGET_OBJECT_CODE_MEMORY | |
1665 | || object == TARGET_OBJECT_RAW_MEMORY) | |
1666 | unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); | |
5d502164 | 1667 | |
279a6fed | 1668 | while (xfered_total < len) |
1e3ff5ad | 1669 | { |
279a6fed | 1670 | ULONGEST xfered_partial; |
9b409511 YQ |
1671 | enum target_xfer_status status; |
1672 | ||
1673 | status = target_read_partial (ops, object, annex, | |
d309493c | 1674 | buf + xfered_total * unit_size, |
279a6fed SM |
1675 | offset + xfered_total, len - xfered_total, |
1676 | &xfered_partial); | |
5d502164 | 1677 | |
1e3ff5ad | 1678 | /* Call an observer, notifying them of the xfer progress? */ |
9b409511 | 1679 | if (status == TARGET_XFER_EOF) |
279a6fed | 1680 | return xfered_total; |
9b409511 YQ |
1681 | else if (status == TARGET_XFER_OK) |
1682 | { | |
279a6fed | 1683 | xfered_total += xfered_partial; |
9b409511 YQ |
1684 | QUIT; |
1685 | } | |
1686 | else | |
279a6fed | 1687 | return TARGET_XFER_E_IO; |
9b409511 | 1688 | |
1e3ff5ad AC |
1689 | } |
1690 | return len; | |
1691 | } | |
1692 | ||
f1a507a1 JB |
1693 | /* Assuming that the entire [begin, end) range of memory cannot be |
1694 | read, try to read whatever subrange is possible to read. | |
1695 | ||
1696 | The function returns, in RESULT, either zero or one memory block. | |
1697 | If there's a readable subrange at the beginning, it is completely | |
1698 | read and returned. Any further readable subrange will not be read. | |
1699 | Otherwise, if there's a readable subrange at the end, it will be | |
1700 | completely read and returned. Any readable subranges before it | |
1701 | (obviously, not starting at the beginning), will be ignored. In | |
1702 | other cases -- either no readable subrange, or readable subrange(s) | |
1703 | that is neither at the beginning, or end, nothing is returned. | |
1704 | ||
1705 | The purpose of this function is to handle a read across a boundary | |
1706 | of accessible memory in a case when memory map is not available. | |
1707 | The above restrictions are fine for this case, but will give | |
1708 | incorrect results if the memory is 'patchy'. However, supporting | |
1709 | 'patchy' memory would require trying to read every single byte, | |
1710 | and it seems unacceptable solution. Explicit memory map is | |
1711 | recommended for this case -- and target_read_memory_robust will | |
1712 | take care of reading multiple ranges then. */ | |
8dedea02 VP |
1713 | |
1714 | static void | |
3e43a32a | 1715 | read_whatever_is_readable (struct target_ops *ops, |
279a6fed | 1716 | const ULONGEST begin, const ULONGEST end, |
d309493c | 1717 | int unit_size, |
386c8614 | 1718 | std::vector<memory_read_result> *result) |
d5086790 | 1719 | { |
8dedea02 VP |
1720 | ULONGEST current_begin = begin; |
1721 | ULONGEST current_end = end; | |
1722 | int forward; | |
9b409511 | 1723 | ULONGEST xfered_len; |
8dedea02 VP |
1724 | |
1725 | /* If we previously failed to read 1 byte, nothing can be done here. */ | |
1726 | if (end - begin <= 1) | |
386c8614 TT |
1727 | return; |
1728 | ||
1729 | gdb::unique_xmalloc_ptr<gdb_byte> buf ((gdb_byte *) xmalloc (end - begin)); | |
8dedea02 VP |
1730 | |
1731 | /* Check that either first or the last byte is readable, and give up | |
c378eb4e | 1732 | if not. This heuristic is meant to permit reading accessible memory |
8dedea02 VP |
1733 | at the boundary of accessible region. */ |
1734 | if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
386c8614 | 1735 | buf.get (), begin, 1, &xfered_len) == TARGET_XFER_OK) |
8dedea02 VP |
1736 | { |
1737 | forward = 1; | |
1738 | ++current_begin; | |
1739 | } | |
1740 | else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
386c8614 | 1741 | buf.get () + (end - begin) - 1, end - 1, 1, |
9b409511 | 1742 | &xfered_len) == TARGET_XFER_OK) |
8dedea02 VP |
1743 | { |
1744 | forward = 0; | |
1745 | --current_end; | |
1746 | } | |
1747 | else | |
386c8614 | 1748 | return; |
8dedea02 VP |
1749 | |
1750 | /* Loop invariant is that the [current_begin, current_end) was previously | |
1751 | found to be not readable as a whole. | |
1752 | ||
1753 | Note loop condition -- if the range has 1 byte, we can't divide the range | |
1754 | so there's no point trying further. */ | |
1755 | while (current_end - current_begin > 1) | |
1756 | { | |
1757 | ULONGEST first_half_begin, first_half_end; | |
1758 | ULONGEST second_half_begin, second_half_end; | |
1759 | LONGEST xfer; | |
279a6fed | 1760 | ULONGEST middle = current_begin + (current_end - current_begin) / 2; |
f1a507a1 | 1761 | |
8dedea02 VP |
1762 | if (forward) |
1763 | { | |
1764 | first_half_begin = current_begin; | |
1765 | first_half_end = middle; | |
1766 | second_half_begin = middle; | |
1767 | second_half_end = current_end; | |
1768 | } | |
1769 | else | |
1770 | { | |
1771 | first_half_begin = middle; | |
1772 | first_half_end = current_end; | |
1773 | second_half_begin = current_begin; | |
1774 | second_half_end = middle; | |
1775 | } | |
1776 | ||
1777 | xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
386c8614 | 1778 | buf.get () + (first_half_begin - begin) * unit_size, |
8dedea02 VP |
1779 | first_half_begin, |
1780 | first_half_end - first_half_begin); | |
1781 | ||
1782 | if (xfer == first_half_end - first_half_begin) | |
1783 | { | |
c378eb4e | 1784 | /* This half reads up fine. So, the error must be in the |
3e43a32a | 1785 | other half. */ |
8dedea02 VP |
1786 | current_begin = second_half_begin; |
1787 | current_end = second_half_end; | |
1788 | } | |
1789 | else | |
1790 | { | |
c378eb4e | 1791 | /* This half is not readable. Because we've tried one byte, we |
279a6fed | 1792 | know some part of this half if actually readable. Go to the next |
8dedea02 VP |
1793 | iteration to divide again and try to read. |
1794 | ||
1795 | We don't handle the other half, because this function only tries | |
1796 | to read a single readable subrange. */ | |
1797 | current_begin = first_half_begin; | |
1798 | current_end = first_half_end; | |
1799 | } | |
1800 | } | |
1801 | ||
1802 | if (forward) | |
1803 | { | |
1804 | /* The [begin, current_begin) range has been read. */ | |
386c8614 | 1805 | result->emplace_back (begin, current_end, std::move (buf)); |
8dedea02 VP |
1806 | } |
1807 | else | |
1808 | { | |
1809 | /* The [current_end, end) range has been read. */ | |
279a6fed | 1810 | LONGEST region_len = end - current_end; |
f1a507a1 | 1811 | |
386c8614 TT |
1812 | gdb::unique_xmalloc_ptr<gdb_byte> data |
1813 | ((gdb_byte *) xmalloc (region_len * unit_size)); | |
1814 | memcpy (data.get (), buf.get () + (current_end - begin) * unit_size, | |
d309493c | 1815 | region_len * unit_size); |
386c8614 | 1816 | result->emplace_back (current_end, end, std::move (data)); |
8dedea02 | 1817 | } |
8dedea02 VP |
1818 | } |
1819 | ||
386c8614 | 1820 | std::vector<memory_read_result> |
279a6fed SM |
1821 | read_memory_robust (struct target_ops *ops, |
1822 | const ULONGEST offset, const LONGEST len) | |
8dedea02 | 1823 | { |
386c8614 | 1824 | std::vector<memory_read_result> result; |
d309493c | 1825 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
8dedea02 | 1826 | |
279a6fed SM |
1827 | LONGEST xfered_total = 0; |
1828 | while (xfered_total < len) | |
d5086790 | 1829 | { |
279a6fed SM |
1830 | struct mem_region *region = lookup_mem_region (offset + xfered_total); |
1831 | LONGEST region_len; | |
5d502164 | 1832 | |
8dedea02 VP |
1833 | /* If there is no explicit region, a fake one should be created. */ |
1834 | gdb_assert (region); | |
1835 | ||
1836 | if (region->hi == 0) | |
279a6fed | 1837 | region_len = len - xfered_total; |
8dedea02 | 1838 | else |
279a6fed | 1839 | region_len = region->hi - offset; |
8dedea02 VP |
1840 | |
1841 | if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO) | |
d5086790 | 1842 | { |
c378eb4e | 1843 | /* Cannot read this region. Note that we can end up here only |
8dedea02 VP |
1844 | if the region is explicitly marked inaccessible, or |
1845 | 'inaccessible-by-default' is in effect. */ | |
279a6fed | 1846 | xfered_total += region_len; |
8dedea02 VP |
1847 | } |
1848 | else | |
1849 | { | |
325fac50 | 1850 | LONGEST to_read = std::min (len - xfered_total, region_len); |
386c8614 TT |
1851 | gdb::unique_xmalloc_ptr<gdb_byte> buffer |
1852 | ((gdb_byte *) xmalloc (to_read * unit_size)); | |
8dedea02 | 1853 | |
279a6fed | 1854 | LONGEST xfered_partial = |
386c8614 | 1855 | target_read (ops, TARGET_OBJECT_MEMORY, NULL, buffer.get (), |
279a6fed | 1856 | offset + xfered_total, to_read); |
8dedea02 | 1857 | /* Call an observer, notifying them of the xfer progress? */ |
279a6fed | 1858 | if (xfered_partial <= 0) |
d5086790 | 1859 | { |
c378eb4e | 1860 | /* Got an error reading full chunk. See if maybe we can read |
8dedea02 | 1861 | some subrange. */ |
e084c964 DB |
1862 | read_whatever_is_readable (ops, offset + xfered_total, |
1863 | offset + xfered_total + to_read, | |
1864 | unit_size, &result); | |
279a6fed | 1865 | xfered_total += to_read; |
d5086790 | 1866 | } |
8dedea02 VP |
1867 | else |
1868 | { | |
386c8614 TT |
1869 | result.emplace_back (offset + xfered_total, |
1870 | offset + xfered_total + xfered_partial, | |
1871 | std::move (buffer)); | |
279a6fed | 1872 | xfered_total += xfered_partial; |
8dedea02 VP |
1873 | } |
1874 | QUIT; | |
d5086790 | 1875 | } |
d5086790 | 1876 | } |
9d78f827 | 1877 | |
8dedea02 | 1878 | return result; |
d5086790 VP |
1879 | } |
1880 | ||
8dedea02 | 1881 | |
cf7a04e8 DJ |
1882 | /* An alternative to target_write with progress callbacks. */ |
1883 | ||
1e3ff5ad | 1884 | LONGEST |
cf7a04e8 DJ |
1885 | target_write_with_progress (struct target_ops *ops, |
1886 | enum target_object object, | |
1887 | const char *annex, const gdb_byte *buf, | |
1888 | ULONGEST offset, LONGEST len, | |
1889 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad | 1890 | { |
279a6fed | 1891 | LONGEST xfered_total = 0; |
d309493c SM |
1892 | int unit_size = 1; |
1893 | ||
1894 | /* If we are writing to a memory object, find the length of an addressable | |
1895 | unit for that architecture. */ | |
1896 | if (object == TARGET_OBJECT_MEMORY | |
1897 | || object == TARGET_OBJECT_STACK_MEMORY | |
1898 | || object == TARGET_OBJECT_CODE_MEMORY | |
1899 | || object == TARGET_OBJECT_RAW_MEMORY) | |
1900 | unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); | |
a76d924d DJ |
1901 | |
1902 | /* Give the progress callback a chance to set up. */ | |
1903 | if (progress) | |
1904 | (*progress) (0, baton); | |
1905 | ||
279a6fed | 1906 | while (xfered_total < len) |
1e3ff5ad | 1907 | { |
279a6fed | 1908 | ULONGEST xfered_partial; |
9b409511 YQ |
1909 | enum target_xfer_status status; |
1910 | ||
1911 | status = target_write_partial (ops, object, annex, | |
d309493c | 1912 | buf + xfered_total * unit_size, |
279a6fed SM |
1913 | offset + xfered_total, len - xfered_total, |
1914 | &xfered_partial); | |
cf7a04e8 | 1915 | |
5c328c05 | 1916 | if (status != TARGET_XFER_OK) |
279a6fed | 1917 | return status == TARGET_XFER_EOF ? xfered_total : TARGET_XFER_E_IO; |
cf7a04e8 DJ |
1918 | |
1919 | if (progress) | |
279a6fed | 1920 | (*progress) (xfered_partial, baton); |
cf7a04e8 | 1921 | |
279a6fed | 1922 | xfered_total += xfered_partial; |
1e3ff5ad AC |
1923 | QUIT; |
1924 | } | |
1925 | return len; | |
1926 | } | |
1927 | ||
7f79c47e DE |
1928 | /* For docs on target_write see target.h. */ |
1929 | ||
cf7a04e8 DJ |
1930 | LONGEST |
1931 | target_write (struct target_ops *ops, | |
1932 | enum target_object object, | |
1933 | const char *annex, const gdb_byte *buf, | |
1934 | ULONGEST offset, LONGEST len) | |
1935 | { | |
1936 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
1937 | NULL, NULL); | |
1938 | } | |
1939 | ||
159f81f3 DJ |
1940 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
1941 | the size of the transferred data. PADDING additional bytes are | |
1942 | available in *BUF_P. This is a helper function for | |
1943 | target_read_alloc; see the declaration of that function for more | |
1944 | information. */ | |
13547ab6 | 1945 | |
159f81f3 DJ |
1946 | static LONGEST |
1947 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, | |
1948 | const char *annex, gdb_byte **buf_p, int padding) | |
13547ab6 DJ |
1949 | { |
1950 | size_t buf_alloc, buf_pos; | |
1951 | gdb_byte *buf; | |
13547ab6 DJ |
1952 | |
1953 | /* This function does not have a length parameter; it reads the | |
1954 | entire OBJECT). Also, it doesn't support objects fetched partly | |
1955 | from one target and partly from another (in a different stratum, | |
1956 | e.g. a core file and an executable). Both reasons make it | |
1957 | unsuitable for reading memory. */ | |
1958 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
1959 | ||
1960 | /* Start by reading up to 4K at a time. The target will throttle | |
1961 | this number down if necessary. */ | |
1962 | buf_alloc = 4096; | |
224c3ddb | 1963 | buf = (gdb_byte *) xmalloc (buf_alloc); |
13547ab6 DJ |
1964 | buf_pos = 0; |
1965 | while (1) | |
1966 | { | |
9b409511 YQ |
1967 | ULONGEST xfered_len; |
1968 | enum target_xfer_status status; | |
1969 | ||
1970 | status = target_read_partial (ops, object, annex, &buf[buf_pos], | |
1971 | buf_pos, buf_alloc - buf_pos - padding, | |
1972 | &xfered_len); | |
1973 | ||
1974 | if (status == TARGET_XFER_EOF) | |
13547ab6 DJ |
1975 | { |
1976 | /* Read all there was. */ | |
1977 | if (buf_pos == 0) | |
1978 | xfree (buf); | |
1979 | else | |
1980 | *buf_p = buf; | |
1981 | return buf_pos; | |
1982 | } | |
9b409511 YQ |
1983 | else if (status != TARGET_XFER_OK) |
1984 | { | |
1985 | /* An error occurred. */ | |
1986 | xfree (buf); | |
1987 | return TARGET_XFER_E_IO; | |
1988 | } | |
13547ab6 | 1989 | |
9b409511 | 1990 | buf_pos += xfered_len; |
13547ab6 DJ |
1991 | |
1992 | /* If the buffer is filling up, expand it. */ | |
1993 | if (buf_alloc < buf_pos * 2) | |
1994 | { | |
1995 | buf_alloc *= 2; | |
224c3ddb | 1996 | buf = (gdb_byte *) xrealloc (buf, buf_alloc); |
13547ab6 DJ |
1997 | } |
1998 | ||
1999 | QUIT; | |
2000 | } | |
2001 | } | |
2002 | ||
159f81f3 DJ |
2003 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
2004 | the size of the transferred data. See the declaration in "target.h" | |
2005 | function for more information about the return value. */ | |
2006 | ||
2007 | LONGEST | |
2008 | target_read_alloc (struct target_ops *ops, enum target_object object, | |
2009 | const char *annex, gdb_byte **buf_p) | |
2010 | { | |
2011 | return target_read_alloc_1 (ops, object, annex, buf_p, 0); | |
2012 | } | |
2013 | ||
b7b030ad | 2014 | /* See target.h. */ |
159f81f3 | 2015 | |
b7b030ad | 2016 | gdb::unique_xmalloc_ptr<char> |
159f81f3 DJ |
2017 | target_read_stralloc (struct target_ops *ops, enum target_object object, |
2018 | const char *annex) | |
2019 | { | |
39086a0e PA |
2020 | gdb_byte *buffer; |
2021 | char *bufstr; | |
7313baad | 2022 | LONGEST i, transferred; |
159f81f3 | 2023 | |
39086a0e PA |
2024 | transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1); |
2025 | bufstr = (char *) buffer; | |
159f81f3 DJ |
2026 | |
2027 | if (transferred < 0) | |
2028 | return NULL; | |
2029 | ||
2030 | if (transferred == 0) | |
b7b030ad | 2031 | return gdb::unique_xmalloc_ptr<char> (xstrdup ("")); |
159f81f3 | 2032 | |
39086a0e | 2033 | bufstr[transferred] = 0; |
7313baad UW |
2034 | |
2035 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
39086a0e PA |
2036 | for (i = strlen (bufstr); i < transferred; i++) |
2037 | if (bufstr[i] != 0) | |
7313baad UW |
2038 | { |
2039 | warning (_("target object %d, annex %s, " | |
2040 | "contained unexpected null characters"), | |
2041 | (int) object, annex ? annex : "(none)"); | |
2042 | break; | |
2043 | } | |
159f81f3 | 2044 | |
b7b030ad | 2045 | return gdb::unique_xmalloc_ptr<char> (bufstr); |
159f81f3 DJ |
2046 | } |
2047 | ||
b6591e8b AC |
2048 | /* Memory transfer methods. */ |
2049 | ||
2050 | void | |
1b0ba102 | 2051 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
2052 | LONGEST len) |
2053 | { | |
07b82ea5 PA |
2054 | /* This method is used to read from an alternate, non-current |
2055 | target. This read must bypass the overlay support (as symbols | |
2056 | don't match this target), and GDB's internal cache (wrong cache | |
2057 | for this target). */ | |
2058 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) | |
b6591e8b | 2059 | != len) |
578d3588 | 2060 | memory_error (TARGET_XFER_E_IO, addr); |
b6591e8b AC |
2061 | } |
2062 | ||
2063 | ULONGEST | |
5d502164 MS |
2064 | get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr, |
2065 | int len, enum bfd_endian byte_order) | |
b6591e8b | 2066 | { |
f6519ebc | 2067 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
2068 | |
2069 | gdb_assert (len <= sizeof (buf)); | |
2070 | get_target_memory (ops, addr, buf, len); | |
e17a4113 | 2071 | return extract_unsigned_integer (buf, len, byte_order); |
b6591e8b AC |
2072 | } |
2073 | ||
3db08215 MM |
2074 | /* See target.h. */ |
2075 | ||
d914c394 SS |
2076 | int |
2077 | target_insert_breakpoint (struct gdbarch *gdbarch, | |
2078 | struct bp_target_info *bp_tgt) | |
2079 | { | |
2080 | if (!may_insert_breakpoints) | |
2081 | { | |
2082 | warning (_("May not insert breakpoints")); | |
2083 | return 1; | |
2084 | } | |
2085 | ||
6b84065d TT |
2086 | return current_target.to_insert_breakpoint (¤t_target, |
2087 | gdbarch, bp_tgt); | |
d914c394 SS |
2088 | } |
2089 | ||
3db08215 MM |
2090 | /* See target.h. */ |
2091 | ||
d914c394 | 2092 | int |
6b84065d | 2093 | target_remove_breakpoint (struct gdbarch *gdbarch, |
73971819 PA |
2094 | struct bp_target_info *bp_tgt, |
2095 | enum remove_bp_reason reason) | |
d914c394 SS |
2096 | { |
2097 | /* This is kind of a weird case to handle, but the permission might | |
2098 | have been changed after breakpoints were inserted - in which case | |
2099 | we should just take the user literally and assume that any | |
2100 | breakpoints should be left in place. */ | |
2101 | if (!may_insert_breakpoints) | |
2102 | { | |
2103 | warning (_("May not remove breakpoints")); | |
2104 | return 1; | |
2105 | } | |
2106 | ||
6b84065d | 2107 | return current_target.to_remove_breakpoint (¤t_target, |
73971819 | 2108 | gdbarch, bp_tgt, reason); |
d914c394 SS |
2109 | } |
2110 | ||
c906108c | 2111 | static void |
1d12d88f | 2112 | info_target_command (const char *args, int from_tty) |
c906108c SS |
2113 | { |
2114 | struct target_ops *t; | |
c906108c | 2115 | int has_all_mem = 0; |
c5aa993b | 2116 | |
c906108c | 2117 | if (symfile_objfile != NULL) |
4262abfb JK |
2118 | printf_unfiltered (_("Symbols from \"%s\".\n"), |
2119 | objfile_name (symfile_objfile)); | |
c906108c | 2120 | |
258b763a | 2121 | for (t = target_stack; t != NULL; t = t->beneath) |
c906108c | 2122 | { |
c35b1492 | 2123 | if (!(*t->to_has_memory) (t)) |
c906108c SS |
2124 | continue; |
2125 | ||
c5aa993b | 2126 | if ((int) (t->to_stratum) <= (int) dummy_stratum) |
c906108c SS |
2127 | continue; |
2128 | if (has_all_mem) | |
3e43a32a MS |
2129 | printf_unfiltered (_("\tWhile running this, " |
2130 | "GDB does not access memory from...\n")); | |
c5aa993b JM |
2131 | printf_unfiltered ("%s:\n", t->to_longname); |
2132 | (t->to_files_info) (t); | |
c35b1492 | 2133 | has_all_mem = (*t->to_has_all_memory) (t); |
c906108c SS |
2134 | } |
2135 | } | |
2136 | ||
fd79ecee DJ |
2137 | /* This function is called before any new inferior is created, e.g. |
2138 | by running a program, attaching, or connecting to a target. | |
2139 | It cleans up any state from previous invocations which might | |
2140 | change between runs. This is a subset of what target_preopen | |
2141 | resets (things which might change between targets). */ | |
2142 | ||
2143 | void | |
2144 | target_pre_inferior (int from_tty) | |
2145 | { | |
c378eb4e | 2146 | /* Clear out solib state. Otherwise the solib state of the previous |
b9db4ced | 2147 | inferior might have survived and is entirely wrong for the new |
c378eb4e | 2148 | target. This has been observed on GNU/Linux using glibc 2.3. How |
b9db4ced UW |
2149 | to reproduce: |
2150 | ||
2151 | bash$ ./foo& | |
2152 | [1] 4711 | |
2153 | bash$ ./foo& | |
2154 | [1] 4712 | |
2155 | bash$ gdb ./foo | |
2156 | [...] | |
2157 | (gdb) attach 4711 | |
2158 | (gdb) detach | |
2159 | (gdb) attach 4712 | |
2160 | Cannot access memory at address 0xdeadbeef | |
2161 | */ | |
b9db4ced | 2162 | |
50c71eaf PA |
2163 | /* In some OSs, the shared library list is the same/global/shared |
2164 | across inferiors. If code is shared between processes, so are | |
2165 | memory regions and features. */ | |
f5656ead | 2166 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
50c71eaf PA |
2167 | { |
2168 | no_shared_libraries (NULL, from_tty); | |
2169 | ||
2170 | invalidate_target_mem_regions (); | |
424163ea | 2171 | |
50c71eaf PA |
2172 | target_clear_description (); |
2173 | } | |
8ffcbaaf | 2174 | |
e9756d52 PP |
2175 | /* attach_flag may be set if the previous process associated with |
2176 | the inferior was attached to. */ | |
2177 | current_inferior ()->attach_flag = 0; | |
2178 | ||
5d5658a1 PA |
2179 | current_inferior ()->highest_thread_num = 0; |
2180 | ||
8ffcbaaf | 2181 | agent_capability_invalidate (); |
fd79ecee DJ |
2182 | } |
2183 | ||
b8fa0bfa PA |
2184 | /* Callback for iterate_over_inferiors. Gets rid of the given |
2185 | inferior. */ | |
2186 | ||
2187 | static int | |
2188 | dispose_inferior (struct inferior *inf, void *args) | |
2189 | { | |
2190 | struct thread_info *thread; | |
2191 | ||
2192 | thread = any_thread_of_process (inf->pid); | |
2193 | if (thread) | |
2194 | { | |
2195 | switch_to_thread (thread->ptid); | |
2196 | ||
2197 | /* Core inferiors actually should be detached, not killed. */ | |
2198 | if (target_has_execution) | |
2199 | target_kill (); | |
2200 | else | |
6e1e1966 | 2201 | target_detach (inf, 0); |
b8fa0bfa PA |
2202 | } |
2203 | ||
2204 | return 0; | |
2205 | } | |
2206 | ||
c906108c SS |
2207 | /* This is to be called by the open routine before it does |
2208 | anything. */ | |
2209 | ||
2210 | void | |
fba45db2 | 2211 | target_preopen (int from_tty) |
c906108c | 2212 | { |
c5aa993b | 2213 | dont_repeat (); |
c906108c | 2214 | |
b8fa0bfa | 2215 | if (have_inferiors ()) |
c5aa993b | 2216 | { |
adf40b2e | 2217 | if (!from_tty |
b8fa0bfa PA |
2218 | || !have_live_inferiors () |
2219 | || query (_("A program is being debugged already. Kill it? "))) | |
2220 | iterate_over_inferiors (dispose_inferior, NULL); | |
c906108c | 2221 | else |
8a3fe4f8 | 2222 | error (_("Program not killed.")); |
c906108c SS |
2223 | } |
2224 | ||
2225 | /* Calling target_kill may remove the target from the stack. But if | |
2226 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
2227 | /* Leave the exec target, though. The user may be switching from a |
2228 | live process to a core of the same program. */ | |
460014f5 | 2229 | pop_all_targets_above (file_stratum); |
fd79ecee DJ |
2230 | |
2231 | target_pre_inferior (from_tty); | |
c906108c SS |
2232 | } |
2233 | ||
6bd6f3b6 | 2234 | /* See target.h. */ |
c906108c SS |
2235 | |
2236 | void | |
6e1e1966 | 2237 | target_detach (inferior *inf, int from_tty) |
c906108c | 2238 | { |
6e1e1966 SM |
2239 | /* As long as some to_detach implementations rely on the current_inferior |
2240 | (either directly, or indirectly, like through target_gdbarch or by | |
2241 | reading memory), INF needs to be the current inferior. When that | |
2242 | requirement will become no longer true, then we can remove this | |
2243 | assertion. */ | |
2244 | gdb_assert (inf == current_inferior ()); | |
2245 | ||
f5656ead | 2246 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
2247 | /* Don't remove global breakpoints here. They're removed on |
2248 | disconnection from the target. */ | |
2249 | ; | |
2250 | else | |
2251 | /* If we're in breakpoints-always-inserted mode, have to remove | |
2252 | them before detaching. */ | |
dfd4cc63 | 2253 | remove_breakpoints_pid (ptid_get_pid (inferior_ptid)); |
74960c60 | 2254 | |
24291992 PA |
2255 | prepare_for_detach (); |
2256 | ||
6e1e1966 | 2257 | current_target.to_detach (¤t_target, inf, from_tty); |
c906108c SS |
2258 | } |
2259 | ||
6ad8ae5c | 2260 | void |
fee354ee | 2261 | target_disconnect (const char *args, int from_tty) |
6ad8ae5c | 2262 | { |
50c71eaf PA |
2263 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
2264 | are global across processes, we have to remove them before | |
2265 | disconnecting. */ | |
74960c60 VP |
2266 | remove_breakpoints (); |
2267 | ||
86a0854a | 2268 | current_target.to_disconnect (¤t_target, args, from_tty); |
6ad8ae5c DJ |
2269 | } |
2270 | ||
f2b9e3df SDJ |
2271 | /* See target/target.h. */ |
2272 | ||
117de6a9 | 2273 | ptid_t |
47608cb1 | 2274 | target_wait (ptid_t ptid, struct target_waitstatus *status, int options) |
117de6a9 | 2275 | { |
a7068b60 | 2276 | return (current_target.to_wait) (¤t_target, ptid, status, options); |
117de6a9 PA |
2277 | } |
2278 | ||
0b333c5e PA |
2279 | /* See target.h. */ |
2280 | ||
2281 | ptid_t | |
2282 | default_target_wait (struct target_ops *ops, | |
2283 | ptid_t ptid, struct target_waitstatus *status, | |
2284 | int options) | |
2285 | { | |
2286 | status->kind = TARGET_WAITKIND_IGNORE; | |
2287 | return minus_one_ptid; | |
2288 | } | |
2289 | ||
7a114964 | 2290 | const char * |
117de6a9 PA |
2291 | target_pid_to_str (ptid_t ptid) |
2292 | { | |
770234d3 | 2293 | return (*current_target.to_pid_to_str) (¤t_target, ptid); |
117de6a9 PA |
2294 | } |
2295 | ||
73ede765 | 2296 | const char * |
4694da01 TT |
2297 | target_thread_name (struct thread_info *info) |
2298 | { | |
825828fc | 2299 | return current_target.to_thread_name (¤t_target, info); |
4694da01 TT |
2300 | } |
2301 | ||
e04ee09e KB |
2302 | struct thread_info * |
2303 | target_thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
2304 | int handle_len, | |
2305 | struct inferior *inf) | |
2306 | { | |
2307 | return current_target.to_thread_handle_to_thread_info | |
2308 | (¤t_target, thread_handle, handle_len, inf); | |
2309 | } | |
2310 | ||
e1ac3328 | 2311 | void |
2ea28649 | 2312 | target_resume (ptid_t ptid, int step, enum gdb_signal signal) |
e1ac3328 | 2313 | { |
4e5d721f | 2314 | target_dcache_invalidate (); |
28439f5e | 2315 | |
6b84065d | 2316 | current_target.to_resume (¤t_target, ptid, step, signal); |
28439f5e | 2317 | |
6b84065d | 2318 | registers_changed_ptid (ptid); |
251bde03 PA |
2319 | /* We only set the internal executing state here. The user/frontend |
2320 | running state is set at a higher level. */ | |
6b84065d | 2321 | set_executing (ptid, 1); |
6b84065d | 2322 | clear_inline_frame_state (ptid); |
e1ac3328 | 2323 | } |
2455069d | 2324 | |
85ad3aaf PA |
2325 | /* If true, target_commit_resume is a nop. */ |
2326 | static int defer_target_commit_resume; | |
2327 | ||
2328 | /* See target.h. */ | |
2329 | ||
2330 | void | |
2331 | target_commit_resume (void) | |
2332 | { | |
85ad3aaf PA |
2333 | if (defer_target_commit_resume) |
2334 | return; | |
2335 | ||
2336 | current_target.to_commit_resume (¤t_target); | |
2337 | } | |
2338 | ||
2339 | /* See target.h. */ | |
2340 | ||
a9bc57b9 TT |
2341 | scoped_restore_tmpl<int> |
2342 | make_scoped_defer_target_commit_resume () | |
85ad3aaf | 2343 | { |
a9bc57b9 | 2344 | return make_scoped_restore (&defer_target_commit_resume, 1); |
85ad3aaf PA |
2345 | } |
2346 | ||
2455069d UW |
2347 | void |
2348 | target_pass_signals (int numsigs, unsigned char *pass_signals) | |
2349 | { | |
035cad7f | 2350 | (*current_target.to_pass_signals) (¤t_target, numsigs, pass_signals); |
2455069d UW |
2351 | } |
2352 | ||
9b224c5e PA |
2353 | void |
2354 | target_program_signals (int numsigs, unsigned char *program_signals) | |
2355 | { | |
7d4f8efa TT |
2356 | (*current_target.to_program_signals) (¤t_target, |
2357 | numsigs, program_signals); | |
9b224c5e PA |
2358 | } |
2359 | ||
098dba18 TT |
2360 | static int |
2361 | default_follow_fork (struct target_ops *self, int follow_child, | |
2362 | int detach_fork) | |
2363 | { | |
2364 | /* Some target returned a fork event, but did not know how to follow it. */ | |
2365 | internal_error (__FILE__, __LINE__, | |
2366 | _("could not find a target to follow fork")); | |
2367 | } | |
2368 | ||
ee057212 DJ |
2369 | /* Look through the list of possible targets for a target that can |
2370 | follow forks. */ | |
2371 | ||
2372 | int | |
07107ca6 | 2373 | target_follow_fork (int follow_child, int detach_fork) |
ee057212 | 2374 | { |
a7068b60 TT |
2375 | return current_target.to_follow_fork (¤t_target, |
2376 | follow_child, detach_fork); | |
ee057212 DJ |
2377 | } |
2378 | ||
94585166 DB |
2379 | /* Target wrapper for follow exec hook. */ |
2380 | ||
2381 | void | |
2382 | target_follow_exec (struct inferior *inf, char *execd_pathname) | |
2383 | { | |
2384 | current_target.to_follow_exec (¤t_target, inf, execd_pathname); | |
2385 | } | |
2386 | ||
8d657035 TT |
2387 | static void |
2388 | default_mourn_inferior (struct target_ops *self) | |
2389 | { | |
2390 | internal_error (__FILE__, __LINE__, | |
2391 | _("could not find a target to follow mourn inferior")); | |
2392 | } | |
2393 | ||
136d6dae | 2394 | void |
bc1e6c81 | 2395 | target_mourn_inferior (ptid_t ptid) |
136d6dae | 2396 | { |
bc1e6c81 | 2397 | gdb_assert (ptid_equal (ptid, inferior_ptid)); |
8d657035 | 2398 | current_target.to_mourn_inferior (¤t_target); |
136d6dae | 2399 | |
8d657035 TT |
2400 | /* We no longer need to keep handles on any of the object files. |
2401 | Make sure to release them to avoid unnecessarily locking any | |
2402 | of them while we're not actually debugging. */ | |
2403 | bfd_cache_close_all (); | |
136d6dae VP |
2404 | } |
2405 | ||
424163ea DJ |
2406 | /* Look for a target which can describe architectural features, starting |
2407 | from TARGET. If we find one, return its description. */ | |
2408 | ||
2409 | const struct target_desc * | |
2410 | target_read_description (struct target_ops *target) | |
2411 | { | |
2117c711 | 2412 | return target->to_read_description (target); |
424163ea DJ |
2413 | } |
2414 | ||
58a5184e | 2415 | /* This implements a basic search of memory, reading target memory and |
08388c79 DE |
2416 | performing the search here (as opposed to performing the search in on the |
2417 | target side with, for example, gdbserver). */ | |
2418 | ||
2419 | int | |
2420 | simple_search_memory (struct target_ops *ops, | |
2421 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2422 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2423 | CORE_ADDR *found_addrp) | |
2424 | { | |
2425 | /* NOTE: also defined in find.c testcase. */ | |
2426 | #define SEARCH_CHUNK_SIZE 16000 | |
2427 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
2428 | /* Buffer to hold memory contents for searching. */ | |
08388c79 | 2429 | unsigned search_buf_size; |
08388c79 DE |
2430 | |
2431 | search_buf_size = chunk_size + pattern_len - 1; | |
2432 | ||
2433 | /* No point in trying to allocate a buffer larger than the search space. */ | |
2434 | if (search_space_len < search_buf_size) | |
2435 | search_buf_size = search_space_len; | |
2436 | ||
26fcd5d7 | 2437 | gdb::byte_vector search_buf (search_buf_size); |
08388c79 DE |
2438 | |
2439 | /* Prime the search buffer. */ | |
2440 | ||
2441 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
26fcd5d7 TT |
2442 | search_buf.data (), start_addr, search_buf_size) |
2443 | != search_buf_size) | |
08388c79 | 2444 | { |
b3dc46ff AB |
2445 | warning (_("Unable to access %s bytes of target " |
2446 | "memory at %s, halting search."), | |
2447 | pulongest (search_buf_size), hex_string (start_addr)); | |
08388c79 DE |
2448 | return -1; |
2449 | } | |
2450 | ||
2451 | /* Perform the search. | |
2452 | ||
2453 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
2454 | When we've scanned N bytes we copy the trailing bytes to the start and | |
2455 | read in another N bytes. */ | |
2456 | ||
2457 | while (search_space_len >= pattern_len) | |
2458 | { | |
2459 | gdb_byte *found_ptr; | |
325fac50 PA |
2460 | unsigned nr_search_bytes |
2461 | = std::min (search_space_len, (ULONGEST) search_buf_size); | |
08388c79 | 2462 | |
26fcd5d7 | 2463 | found_ptr = (gdb_byte *) memmem (search_buf.data (), nr_search_bytes, |
d7f3ff3e | 2464 | pattern, pattern_len); |
08388c79 DE |
2465 | |
2466 | if (found_ptr != NULL) | |
2467 | { | |
26fcd5d7 | 2468 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf.data ()); |
5d502164 | 2469 | |
08388c79 | 2470 | *found_addrp = found_addr; |
08388c79 DE |
2471 | return 1; |
2472 | } | |
2473 | ||
2474 | /* Not found in this chunk, skip to next chunk. */ | |
2475 | ||
2476 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
2477 | if (search_space_len >= chunk_size) | |
2478 | search_space_len -= chunk_size; | |
2479 | else | |
2480 | search_space_len = 0; | |
2481 | ||
2482 | if (search_space_len >= pattern_len) | |
2483 | { | |
2484 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 2485 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
2486 | int nr_to_read; |
2487 | ||
2488 | /* Copy the trailing part of the previous iteration to the front | |
2489 | of the buffer for the next iteration. */ | |
2490 | gdb_assert (keep_len == pattern_len - 1); | |
26fcd5d7 | 2491 | memcpy (&search_buf[0], &search_buf[chunk_size], keep_len); |
08388c79 | 2492 | |
325fac50 PA |
2493 | nr_to_read = std::min (search_space_len - keep_len, |
2494 | (ULONGEST) chunk_size); | |
08388c79 DE |
2495 | |
2496 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
26fcd5d7 | 2497 | &search_buf[keep_len], read_addr, |
08388c79 DE |
2498 | nr_to_read) != nr_to_read) |
2499 | { | |
b3dc46ff | 2500 | warning (_("Unable to access %s bytes of target " |
9b20d036 | 2501 | "memory at %s, halting search."), |
b3dc46ff | 2502 | plongest (nr_to_read), |
08388c79 | 2503 | hex_string (read_addr)); |
08388c79 DE |
2504 | return -1; |
2505 | } | |
2506 | ||
2507 | start_addr += chunk_size; | |
2508 | } | |
2509 | } | |
2510 | ||
2511 | /* Not found. */ | |
2512 | ||
08388c79 DE |
2513 | return 0; |
2514 | } | |
2515 | ||
58a5184e TT |
2516 | /* Default implementation of memory-searching. */ |
2517 | ||
2518 | static int | |
2519 | default_search_memory (struct target_ops *self, | |
2520 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2521 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2522 | CORE_ADDR *found_addrp) | |
2523 | { | |
2524 | /* Start over from the top of the target stack. */ | |
2525 | return simple_search_memory (current_target.beneath, | |
2526 | start_addr, search_space_len, | |
2527 | pattern, pattern_len, found_addrp); | |
2528 | } | |
2529 | ||
08388c79 DE |
2530 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the |
2531 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2532 | ||
2533 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2534 | requiring halting of the search (e.g. memory read error). | |
2535 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2536 | ||
2537 | int | |
2538 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2539 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2540 | CORE_ADDR *found_addrp) | |
2541 | { | |
a7068b60 TT |
2542 | return current_target.to_search_memory (¤t_target, start_addr, |
2543 | search_space_len, | |
2544 | pattern, pattern_len, found_addrp); | |
08388c79 DE |
2545 | } |
2546 | ||
8edfe269 DJ |
2547 | /* Look through the currently pushed targets. If none of them will |
2548 | be able to restart the currently running process, issue an error | |
2549 | message. */ | |
2550 | ||
2551 | void | |
2552 | target_require_runnable (void) | |
2553 | { | |
2554 | struct target_ops *t; | |
2555 | ||
2556 | for (t = target_stack; t != NULL; t = t->beneath) | |
2557 | { | |
2558 | /* If this target knows how to create a new program, then | |
2559 | assume we will still be able to after killing the current | |
2560 | one. Either killing and mourning will not pop T, or else | |
2561 | find_default_run_target will find it again. */ | |
2562 | if (t->to_create_inferior != NULL) | |
2563 | return; | |
2564 | ||
548740d6 | 2565 | /* Do not worry about targets at certain strata that can not |
8edfe269 DJ |
2566 | create inferiors. Assume they will be pushed again if |
2567 | necessary, and continue to the process_stratum. */ | |
85e747d2 | 2568 | if (t->to_stratum == thread_stratum |
548740d6 | 2569 | || t->to_stratum == record_stratum |
85e747d2 | 2570 | || t->to_stratum == arch_stratum) |
8edfe269 DJ |
2571 | continue; |
2572 | ||
3e43a32a MS |
2573 | error (_("The \"%s\" target does not support \"run\". " |
2574 | "Try \"help target\" or \"continue\"."), | |
8edfe269 DJ |
2575 | t->to_shortname); |
2576 | } | |
2577 | ||
2578 | /* This function is only called if the target is running. In that | |
2579 | case there should have been a process_stratum target and it | |
c378eb4e | 2580 | should either know how to create inferiors, or not... */ |
9b20d036 | 2581 | internal_error (__FILE__, __LINE__, _("No targets found")); |
8edfe269 DJ |
2582 | } |
2583 | ||
6a3cb8e8 PA |
2584 | /* Whether GDB is allowed to fall back to the default run target for |
2585 | "run", "attach", etc. when no target is connected yet. */ | |
2586 | static int auto_connect_native_target = 1; | |
2587 | ||
2588 | static void | |
2589 | show_auto_connect_native_target (struct ui_file *file, int from_tty, | |
2590 | struct cmd_list_element *c, const char *value) | |
2591 | { | |
2592 | fprintf_filtered (file, | |
2593 | _("Whether GDB may automatically connect to the " | |
2594 | "native target is %s.\n"), | |
2595 | value); | |
2596 | } | |
2597 | ||
c906108c SS |
2598 | /* Look through the list of possible targets for a target that can |
2599 | execute a run or attach command without any other data. This is | |
2600 | used to locate the default process stratum. | |
2601 | ||
5f667f2d PA |
2602 | If DO_MESG is not NULL, the result is always valid (error() is |
2603 | called for errors); else, return NULL on error. */ | |
c906108c SS |
2604 | |
2605 | static struct target_ops * | |
a121b7c1 | 2606 | find_default_run_target (const char *do_mesg) |
c906108c | 2607 | { |
c906108c | 2608 | struct target_ops *runable = NULL; |
c906108c | 2609 | |
6a3cb8e8 | 2610 | if (auto_connect_native_target) |
c906108c | 2611 | { |
89a1c21a | 2612 | struct target_ops *t; |
6a3cb8e8 | 2613 | int count = 0; |
89a1c21a | 2614 | int i; |
6a3cb8e8 | 2615 | |
89a1c21a | 2616 | for (i = 0; VEC_iterate (target_ops_p, target_structs, i, t); ++i) |
c906108c | 2617 | { |
89a1c21a | 2618 | if (t->to_can_run != delegate_can_run && target_can_run (t)) |
6a3cb8e8 | 2619 | { |
89a1c21a | 2620 | runable = t; |
6a3cb8e8 PA |
2621 | ++count; |
2622 | } | |
c906108c | 2623 | } |
6a3cb8e8 PA |
2624 | |
2625 | if (count != 1) | |
2626 | runable = NULL; | |
c906108c SS |
2627 | } |
2628 | ||
6a3cb8e8 | 2629 | if (runable == NULL) |
5f667f2d PA |
2630 | { |
2631 | if (do_mesg) | |
2632 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
2633 | else | |
2634 | return NULL; | |
2635 | } | |
c906108c SS |
2636 | |
2637 | return runable; | |
2638 | } | |
2639 | ||
b3ccfe11 | 2640 | /* See target.h. */ |
c906108c | 2641 | |
b3ccfe11 TT |
2642 | struct target_ops * |
2643 | find_attach_target (void) | |
c906108c SS |
2644 | { |
2645 | struct target_ops *t; | |
2646 | ||
b3ccfe11 TT |
2647 | /* If a target on the current stack can attach, use it. */ |
2648 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2649 | { | |
2650 | if (t->to_attach != NULL) | |
2651 | break; | |
2652 | } | |
c906108c | 2653 | |
b3ccfe11 TT |
2654 | /* Otherwise, use the default run target for attaching. */ |
2655 | if (t == NULL) | |
2656 | t = find_default_run_target ("attach"); | |
b84876c2 | 2657 | |
b3ccfe11 | 2658 | return t; |
b84876c2 PA |
2659 | } |
2660 | ||
b3ccfe11 | 2661 | /* See target.h. */ |
b84876c2 | 2662 | |
b3ccfe11 TT |
2663 | struct target_ops * |
2664 | find_run_target (void) | |
9908b566 VP |
2665 | { |
2666 | struct target_ops *t; | |
2667 | ||
b3ccfe11 TT |
2668 | /* If a target on the current stack can attach, use it. */ |
2669 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2670 | { | |
2671 | if (t->to_create_inferior != NULL) | |
2672 | break; | |
2673 | } | |
5d502164 | 2674 | |
b3ccfe11 TT |
2675 | /* Otherwise, use the default run target. */ |
2676 | if (t == NULL) | |
2677 | t = find_default_run_target ("run"); | |
9908b566 | 2678 | |
b3ccfe11 | 2679 | return t; |
9908b566 VP |
2680 | } |
2681 | ||
145b16a9 UW |
2682 | /* Implement the "info proc" command. */ |
2683 | ||
451b7c33 | 2684 | int |
7bc112c1 | 2685 | target_info_proc (const char *args, enum info_proc_what what) |
145b16a9 UW |
2686 | { |
2687 | struct target_ops *t; | |
2688 | ||
2689 | /* If we're already connected to something that can get us OS | |
2690 | related data, use it. Otherwise, try using the native | |
2691 | target. */ | |
2692 | if (current_target.to_stratum >= process_stratum) | |
2693 | t = current_target.beneath; | |
2694 | else | |
2695 | t = find_default_run_target (NULL); | |
2696 | ||
2697 | for (; t != NULL; t = t->beneath) | |
2698 | { | |
2699 | if (t->to_info_proc != NULL) | |
2700 | { | |
2701 | t->to_info_proc (t, args, what); | |
2702 | ||
2703 | if (targetdebug) | |
2704 | fprintf_unfiltered (gdb_stdlog, | |
2705 | "target_info_proc (\"%s\", %d)\n", args, what); | |
2706 | ||
451b7c33 | 2707 | return 1; |
145b16a9 UW |
2708 | } |
2709 | } | |
2710 | ||
451b7c33 | 2711 | return 0; |
145b16a9 UW |
2712 | } |
2713 | ||
03583c20 | 2714 | static int |
2bfc0540 | 2715 | find_default_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
2716 | { |
2717 | struct target_ops *t; | |
2718 | ||
2719 | t = find_default_run_target (NULL); | |
2720 | if (t && t->to_supports_disable_randomization) | |
2bfc0540 | 2721 | return (t->to_supports_disable_randomization) (t); |
03583c20 UW |
2722 | return 0; |
2723 | } | |
2724 | ||
2725 | int | |
2726 | target_supports_disable_randomization (void) | |
2727 | { | |
2728 | struct target_ops *t; | |
2729 | ||
2730 | for (t = ¤t_target; t != NULL; t = t->beneath) | |
2731 | if (t->to_supports_disable_randomization) | |
2bfc0540 | 2732 | return t->to_supports_disable_randomization (t); |
03583c20 UW |
2733 | |
2734 | return 0; | |
2735 | } | |
9908b566 | 2736 | |
1fb77080 SDJ |
2737 | /* See target/target.h. */ |
2738 | ||
2739 | int | |
2740 | target_supports_multi_process (void) | |
2741 | { | |
2742 | return (*current_target.to_supports_multi_process) (¤t_target); | |
2743 | } | |
2744 | ||
b7b030ad TT |
2745 | /* See target.h. */ |
2746 | ||
2747 | gdb::unique_xmalloc_ptr<char> | |
07e059b5 VP |
2748 | target_get_osdata (const char *type) |
2749 | { | |
07e059b5 VP |
2750 | struct target_ops *t; |
2751 | ||
739ef7fb PA |
2752 | /* If we're already connected to something that can get us OS |
2753 | related data, use it. Otherwise, try using the native | |
2754 | target. */ | |
2755 | if (current_target.to_stratum >= process_stratum) | |
6d097e65 | 2756 | t = current_target.beneath; |
739ef7fb PA |
2757 | else |
2758 | t = find_default_run_target ("get OS data"); | |
07e059b5 VP |
2759 | |
2760 | if (!t) | |
2761 | return NULL; | |
2762 | ||
6d097e65 | 2763 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
2764 | } |
2765 | ||
8eaff7cd TT |
2766 | static struct address_space * |
2767 | default_thread_address_space (struct target_ops *self, ptid_t ptid) | |
6c95b8df PA |
2768 | { |
2769 | struct inferior *inf; | |
6c95b8df PA |
2770 | |
2771 | /* Fall-back to the "main" address space of the inferior. */ | |
c9657e70 | 2772 | inf = find_inferior_ptid (ptid); |
6c95b8df PA |
2773 | |
2774 | if (inf == NULL || inf->aspace == NULL) | |
3e43a32a | 2775 | internal_error (__FILE__, __LINE__, |
9b20d036 MS |
2776 | _("Can't determine the current " |
2777 | "address space of thread %s\n"), | |
6c95b8df PA |
2778 | target_pid_to_str (ptid)); |
2779 | ||
2780 | return inf->aspace; | |
2781 | } | |
2782 | ||
8eaff7cd TT |
2783 | /* Determine the current address space of thread PTID. */ |
2784 | ||
2785 | struct address_space * | |
2786 | target_thread_address_space (ptid_t ptid) | |
2787 | { | |
2788 | struct address_space *aspace; | |
2789 | ||
2790 | aspace = current_target.to_thread_address_space (¤t_target, ptid); | |
2791 | gdb_assert (aspace != NULL); | |
2792 | ||
8eaff7cd TT |
2793 | return aspace; |
2794 | } | |
2795 | ||
7313baad UW |
2796 | |
2797 | /* Target file operations. */ | |
2798 | ||
2799 | static struct target_ops * | |
2800 | default_fileio_target (void) | |
2801 | { | |
2802 | /* If we're already connected to something that can perform | |
2803 | file I/O, use it. Otherwise, try using the native target. */ | |
2804 | if (current_target.to_stratum >= process_stratum) | |
2805 | return current_target.beneath; | |
2806 | else | |
2807 | return find_default_run_target ("file I/O"); | |
2808 | } | |
2809 | ||
1c4b552b GB |
2810 | /* File handle for target file operations. */ |
2811 | ||
2812 | typedef struct | |
2813 | { | |
2814 | /* The target on which this file is open. */ | |
2815 | struct target_ops *t; | |
2816 | ||
2817 | /* The file descriptor on the target. */ | |
2818 | int fd; | |
2819 | } fileio_fh_t; | |
2820 | ||
2821 | DEF_VEC_O (fileio_fh_t); | |
2822 | ||
2823 | /* Vector of currently open file handles. The value returned by | |
2824 | target_fileio_open and passed as the FD argument to other | |
2825 | target_fileio_* functions is an index into this vector. This | |
2826 | vector's entries are never freed; instead, files are marked as | |
2827 | closed, and the handle becomes available for reuse. */ | |
2828 | static VEC (fileio_fh_t) *fileio_fhandles; | |
2829 | ||
2830 | /* Macro to check whether a fileio_fh_t represents a closed file. */ | |
2831 | #define is_closed_fileio_fh(fd) ((fd) < 0) | |
2832 | ||
2833 | /* Index into fileio_fhandles of the lowest handle that might be | |
2834 | closed. This permits handle reuse without searching the whole | |
2835 | list each time a new file is opened. */ | |
2836 | static int lowest_closed_fd; | |
2837 | ||
2838 | /* Acquire a target fileio file descriptor. */ | |
2839 | ||
2840 | static int | |
2841 | acquire_fileio_fd (struct target_ops *t, int fd) | |
2842 | { | |
870f88f7 | 2843 | fileio_fh_t *fh; |
1c4b552b GB |
2844 | |
2845 | gdb_assert (!is_closed_fileio_fh (fd)); | |
2846 | ||
2847 | /* Search for closed handles to reuse. */ | |
2848 | for (; | |
2849 | VEC_iterate (fileio_fh_t, fileio_fhandles, | |
2850 | lowest_closed_fd, fh); | |
2851 | lowest_closed_fd++) | |
2852 | if (is_closed_fileio_fh (fh->fd)) | |
2853 | break; | |
2854 | ||
2855 | /* Push a new handle if no closed handles were found. */ | |
2856 | if (lowest_closed_fd == VEC_length (fileio_fh_t, fileio_fhandles)) | |
2857 | fh = VEC_safe_push (fileio_fh_t, fileio_fhandles, NULL); | |
2858 | ||
2859 | /* Fill in the handle. */ | |
2860 | fh->t = t; | |
2861 | fh->fd = fd; | |
2862 | ||
2863 | /* Return its index, and start the next lookup at | |
2864 | the next index. */ | |
2865 | return lowest_closed_fd++; | |
2866 | } | |
2867 | ||
2868 | /* Release a target fileio file descriptor. */ | |
2869 | ||
2870 | static void | |
2871 | release_fileio_fd (int fd, fileio_fh_t *fh) | |
2872 | { | |
2873 | fh->fd = -1; | |
325fac50 | 2874 | lowest_closed_fd = std::min (lowest_closed_fd, fd); |
1c4b552b GB |
2875 | } |
2876 | ||
2877 | /* Return a pointer to the fileio_fhandle_t corresponding to FD. */ | |
2878 | ||
2879 | #define fileio_fd_to_fh(fd) \ | |
2880 | VEC_index (fileio_fh_t, fileio_fhandles, (fd)) | |
2881 | ||
4313b8c0 GB |
2882 | /* Helper for target_fileio_open and |
2883 | target_fileio_open_warn_if_slow. */ | |
12e2a5fd | 2884 | |
4313b8c0 GB |
2885 | static int |
2886 | target_fileio_open_1 (struct inferior *inf, const char *filename, | |
2887 | int flags, int mode, int warn_if_slow, | |
2888 | int *target_errno) | |
7313baad UW |
2889 | { |
2890 | struct target_ops *t; | |
2891 | ||
2892 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2893 | { | |
2894 | if (t->to_fileio_open != NULL) | |
2895 | { | |
07c138c8 | 2896 | int fd = t->to_fileio_open (t, inf, filename, flags, mode, |
4313b8c0 | 2897 | warn_if_slow, target_errno); |
7313baad | 2898 | |
1c4b552b GB |
2899 | if (fd < 0) |
2900 | fd = -1; | |
2901 | else | |
2902 | fd = acquire_fileio_fd (t, fd); | |
2903 | ||
7313baad UW |
2904 | if (targetdebug) |
2905 | fprintf_unfiltered (gdb_stdlog, | |
4313b8c0 | 2906 | "target_fileio_open (%d,%s,0x%x,0%o,%d)" |
07c138c8 GB |
2907 | " = %d (%d)\n", |
2908 | inf == NULL ? 0 : inf->num, | |
7313baad | 2909 | filename, flags, mode, |
4313b8c0 GB |
2910 | warn_if_slow, fd, |
2911 | fd != -1 ? 0 : *target_errno); | |
7313baad UW |
2912 | return fd; |
2913 | } | |
2914 | } | |
2915 | ||
2916 | *target_errno = FILEIO_ENOSYS; | |
2917 | return -1; | |
2918 | } | |
2919 | ||
12e2a5fd GB |
2920 | /* See target.h. */ |
2921 | ||
4313b8c0 GB |
2922 | int |
2923 | target_fileio_open (struct inferior *inf, const char *filename, | |
2924 | int flags, int mode, int *target_errno) | |
2925 | { | |
2926 | return target_fileio_open_1 (inf, filename, flags, mode, 0, | |
2927 | target_errno); | |
2928 | } | |
2929 | ||
2930 | /* See target.h. */ | |
2931 | ||
2932 | int | |
2933 | target_fileio_open_warn_if_slow (struct inferior *inf, | |
2934 | const char *filename, | |
2935 | int flags, int mode, int *target_errno) | |
2936 | { | |
2937 | return target_fileio_open_1 (inf, filename, flags, mode, 1, | |
2938 | target_errno); | |
2939 | } | |
2940 | ||
2941 | /* See target.h. */ | |
2942 | ||
7313baad UW |
2943 | int |
2944 | target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
2945 | ULONGEST offset, int *target_errno) | |
2946 | { | |
1c4b552b GB |
2947 | fileio_fh_t *fh = fileio_fd_to_fh (fd); |
2948 | int ret = -1; | |
7313baad | 2949 | |
1c4b552b GB |
2950 | if (is_closed_fileio_fh (fh->fd)) |
2951 | *target_errno = EBADF; | |
2952 | else | |
2953 | ret = fh->t->to_fileio_pwrite (fh->t, fh->fd, write_buf, | |
2954 | len, offset, target_errno); | |
7313baad | 2955 | |
1c4b552b GB |
2956 | if (targetdebug) |
2957 | fprintf_unfiltered (gdb_stdlog, | |
2958 | "target_fileio_pwrite (%d,...,%d,%s) " | |
2959 | "= %d (%d)\n", | |
2960 | fd, len, pulongest (offset), | |
2961 | ret, ret != -1 ? 0 : *target_errno); | |
2962 | return ret; | |
7313baad UW |
2963 | } |
2964 | ||
12e2a5fd GB |
2965 | /* See target.h. */ |
2966 | ||
7313baad UW |
2967 | int |
2968 | target_fileio_pread (int fd, gdb_byte *read_buf, int len, | |
2969 | ULONGEST offset, int *target_errno) | |
2970 | { | |
1c4b552b GB |
2971 | fileio_fh_t *fh = fileio_fd_to_fh (fd); |
2972 | int ret = -1; | |
7313baad | 2973 | |
1c4b552b GB |
2974 | if (is_closed_fileio_fh (fh->fd)) |
2975 | *target_errno = EBADF; | |
2976 | else | |
2977 | ret = fh->t->to_fileio_pread (fh->t, fh->fd, read_buf, | |
2978 | len, offset, target_errno); | |
7313baad | 2979 | |
1c4b552b GB |
2980 | if (targetdebug) |
2981 | fprintf_unfiltered (gdb_stdlog, | |
2982 | "target_fileio_pread (%d,...,%d,%s) " | |
2983 | "= %d (%d)\n", | |
2984 | fd, len, pulongest (offset), | |
2985 | ret, ret != -1 ? 0 : *target_errno); | |
9b15c1f0 GB |
2986 | return ret; |
2987 | } | |
2988 | ||
2989 | /* See target.h. */ | |
12e2a5fd | 2990 | |
9b15c1f0 GB |
2991 | int |
2992 | target_fileio_fstat (int fd, struct stat *sb, int *target_errno) | |
2993 | { | |
2994 | fileio_fh_t *fh = fileio_fd_to_fh (fd); | |
2995 | int ret = -1; | |
2996 | ||
2997 | if (is_closed_fileio_fh (fh->fd)) | |
2998 | *target_errno = EBADF; | |
2999 | else | |
3000 | ret = fh->t->to_fileio_fstat (fh->t, fh->fd, sb, target_errno); | |
3001 | ||
3002 | if (targetdebug) | |
3003 | fprintf_unfiltered (gdb_stdlog, | |
3004 | "target_fileio_fstat (%d) = %d (%d)\n", | |
3005 | fd, ret, ret != -1 ? 0 : *target_errno); | |
1c4b552b | 3006 | return ret; |
7313baad UW |
3007 | } |
3008 | ||
12e2a5fd GB |
3009 | /* See target.h. */ |
3010 | ||
7313baad UW |
3011 | int |
3012 | target_fileio_close (int fd, int *target_errno) | |
3013 | { | |
1c4b552b GB |
3014 | fileio_fh_t *fh = fileio_fd_to_fh (fd); |
3015 | int ret = -1; | |
7313baad | 3016 | |
1c4b552b GB |
3017 | if (is_closed_fileio_fh (fh->fd)) |
3018 | *target_errno = EBADF; | |
3019 | else | |
7313baad | 3020 | { |
1c4b552b GB |
3021 | ret = fh->t->to_fileio_close (fh->t, fh->fd, target_errno); |
3022 | release_fileio_fd (fd, fh); | |
7313baad UW |
3023 | } |
3024 | ||
1c4b552b GB |
3025 | if (targetdebug) |
3026 | fprintf_unfiltered (gdb_stdlog, | |
3027 | "target_fileio_close (%d) = %d (%d)\n", | |
3028 | fd, ret, ret != -1 ? 0 : *target_errno); | |
3029 | return ret; | |
7313baad UW |
3030 | } |
3031 | ||
12e2a5fd GB |
3032 | /* See target.h. */ |
3033 | ||
7313baad | 3034 | int |
07c138c8 GB |
3035 | target_fileio_unlink (struct inferior *inf, const char *filename, |
3036 | int *target_errno) | |
7313baad UW |
3037 | { |
3038 | struct target_ops *t; | |
3039 | ||
3040 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3041 | { | |
3042 | if (t->to_fileio_unlink != NULL) | |
3043 | { | |
07c138c8 GB |
3044 | int ret = t->to_fileio_unlink (t, inf, filename, |
3045 | target_errno); | |
7313baad UW |
3046 | |
3047 | if (targetdebug) | |
3048 | fprintf_unfiltered (gdb_stdlog, | |
07c138c8 GB |
3049 | "target_fileio_unlink (%d,%s)" |
3050 | " = %d (%d)\n", | |
3051 | inf == NULL ? 0 : inf->num, filename, | |
3052 | ret, ret != -1 ? 0 : *target_errno); | |
7313baad UW |
3053 | return ret; |
3054 | } | |
3055 | } | |
3056 | ||
3057 | *target_errno = FILEIO_ENOSYS; | |
3058 | return -1; | |
3059 | } | |
3060 | ||
12e2a5fd GB |
3061 | /* See target.h. */ |
3062 | ||
e0d3522b | 3063 | gdb::optional<std::string> |
07c138c8 GB |
3064 | target_fileio_readlink (struct inferior *inf, const char *filename, |
3065 | int *target_errno) | |
b9e7b9c3 UW |
3066 | { |
3067 | struct target_ops *t; | |
3068 | ||
3069 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3070 | { | |
3071 | if (t->to_fileio_readlink != NULL) | |
3072 | { | |
e0d3522b TT |
3073 | gdb::optional<std::string> ret |
3074 | = t->to_fileio_readlink (t, inf, filename, target_errno); | |
b9e7b9c3 UW |
3075 | |
3076 | if (targetdebug) | |
3077 | fprintf_unfiltered (gdb_stdlog, | |
07c138c8 GB |
3078 | "target_fileio_readlink (%d,%s)" |
3079 | " = %s (%d)\n", | |
3080 | inf == NULL ? 0 : inf->num, | |
e0d3522b TT |
3081 | filename, ret ? ret->c_str () : "(nil)", |
3082 | ret ? 0 : *target_errno); | |
b9e7b9c3 UW |
3083 | return ret; |
3084 | } | |
3085 | } | |
3086 | ||
3087 | *target_errno = FILEIO_ENOSYS; | |
e0d3522b | 3088 | return {}; |
b9e7b9c3 UW |
3089 | } |
3090 | ||
770623f7 TT |
3091 | /* Like scoped_fd, but specific to target fileio. */ |
3092 | ||
3093 | class scoped_target_fd | |
7313baad | 3094 | { |
770623f7 TT |
3095 | public: |
3096 | explicit scoped_target_fd (int fd) noexcept | |
3097 | : m_fd (fd) | |
3098 | { | |
3099 | } | |
7313baad | 3100 | |
770623f7 TT |
3101 | ~scoped_target_fd () |
3102 | { | |
3103 | if (m_fd >= 0) | |
3104 | { | |
3105 | int target_errno; | |
3106 | ||
3107 | target_fileio_close (m_fd, &target_errno); | |
3108 | } | |
3109 | } | |
3110 | ||
3111 | DISABLE_COPY_AND_ASSIGN (scoped_target_fd); | |
3112 | ||
3113 | int get () const noexcept | |
3114 | { | |
3115 | return m_fd; | |
3116 | } | |
3117 | ||
3118 | private: | |
3119 | int m_fd; | |
3120 | }; | |
7313baad | 3121 | |
07c138c8 GB |
3122 | /* Read target file FILENAME, in the filesystem as seen by INF. If |
3123 | INF is NULL, use the filesystem seen by the debugger (GDB or, for | |
3124 | remote targets, the remote stub). Store the result in *BUF_P and | |
3125 | return the size of the transferred data. PADDING additional bytes | |
3126 | are available in *BUF_P. This is a helper function for | |
3127 | target_fileio_read_alloc; see the declaration of that function for | |
3128 | more information. */ | |
7313baad | 3129 | |
f7af1fcd JK |
3130 | static LONGEST |
3131 | target_fileio_read_alloc_1 (struct inferior *inf, const char *filename, | |
3132 | gdb_byte **buf_p, int padding) | |
3133 | { | |
db1ff28b JK |
3134 | size_t buf_alloc, buf_pos; |
3135 | gdb_byte *buf; | |
3136 | LONGEST n; | |
db1ff28b | 3137 | int target_errno; |
f7af1fcd | 3138 | |
770623f7 TT |
3139 | scoped_target_fd fd (target_fileio_open (inf, filename, FILEIO_O_RDONLY, |
3140 | 0700, &target_errno)); | |
3141 | if (fd.get () == -1) | |
f7af1fcd JK |
3142 | return -1; |
3143 | ||
db1ff28b JK |
3144 | /* Start by reading up to 4K at a time. The target will throttle |
3145 | this number down if necessary. */ | |
3146 | buf_alloc = 4096; | |
224c3ddb | 3147 | buf = (gdb_byte *) xmalloc (buf_alloc); |
db1ff28b JK |
3148 | buf_pos = 0; |
3149 | while (1) | |
3150 | { | |
770623f7 | 3151 | n = target_fileio_pread (fd.get (), &buf[buf_pos], |
db1ff28b JK |
3152 | buf_alloc - buf_pos - padding, buf_pos, |
3153 | &target_errno); | |
3154 | if (n < 0) | |
3155 | { | |
3156 | /* An error occurred. */ | |
db1ff28b JK |
3157 | xfree (buf); |
3158 | return -1; | |
3159 | } | |
3160 | else if (n == 0) | |
3161 | { | |
3162 | /* Read all there was. */ | |
db1ff28b JK |
3163 | if (buf_pos == 0) |
3164 | xfree (buf); | |
3165 | else | |
3166 | *buf_p = buf; | |
3167 | return buf_pos; | |
3168 | } | |
3169 | ||
3170 | buf_pos += n; | |
3171 | ||
3172 | /* If the buffer is filling up, expand it. */ | |
3173 | if (buf_alloc < buf_pos * 2) | |
3174 | { | |
3175 | buf_alloc *= 2; | |
224c3ddb | 3176 | buf = (gdb_byte *) xrealloc (buf, buf_alloc); |
db1ff28b JK |
3177 | } |
3178 | ||
3179 | QUIT; | |
3180 | } | |
f7af1fcd JK |
3181 | } |
3182 | ||
12e2a5fd | 3183 | /* See target.h. */ |
7313baad UW |
3184 | |
3185 | LONGEST | |
07c138c8 GB |
3186 | target_fileio_read_alloc (struct inferior *inf, const char *filename, |
3187 | gdb_byte **buf_p) | |
7313baad | 3188 | { |
07c138c8 | 3189 | return target_fileio_read_alloc_1 (inf, filename, buf_p, 0); |
7313baad UW |
3190 | } |
3191 | ||
db1ff28b | 3192 | /* See target.h. */ |
f7af1fcd | 3193 | |
87028b87 | 3194 | gdb::unique_xmalloc_ptr<char> |
f7af1fcd JK |
3195 | target_fileio_read_stralloc (struct inferior *inf, const char *filename) |
3196 | { | |
db1ff28b JK |
3197 | gdb_byte *buffer; |
3198 | char *bufstr; | |
3199 | LONGEST i, transferred; | |
3200 | ||
3201 | transferred = target_fileio_read_alloc_1 (inf, filename, &buffer, 1); | |
3202 | bufstr = (char *) buffer; | |
3203 | ||
3204 | if (transferred < 0) | |
87028b87 | 3205 | return gdb::unique_xmalloc_ptr<char> (nullptr); |
db1ff28b JK |
3206 | |
3207 | if (transferred == 0) | |
87028b87 | 3208 | return gdb::unique_xmalloc_ptr<char> (xstrdup ("")); |
db1ff28b JK |
3209 | |
3210 | bufstr[transferred] = 0; | |
3211 | ||
3212 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
3213 | for (i = strlen (bufstr); i < transferred; i++) | |
3214 | if (bufstr[i] != 0) | |
3215 | { | |
3216 | warning (_("target file %s " | |
3217 | "contained unexpected null characters"), | |
3218 | filename); | |
3219 | break; | |
3220 | } | |
3221 | ||
87028b87 | 3222 | return gdb::unique_xmalloc_ptr<char> (bufstr); |
f7af1fcd | 3223 | } |
7313baad | 3224 | |
db1ff28b | 3225 | |
e0d24f8d | 3226 | static int |
31568a15 TT |
3227 | default_region_ok_for_hw_watchpoint (struct target_ops *self, |
3228 | CORE_ADDR addr, int len) | |
e0d24f8d | 3229 | { |
f5656ead | 3230 | return (len <= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT); |
ccaa32c7 GS |
3231 | } |
3232 | ||
5009afc5 AS |
3233 | static int |
3234 | default_watchpoint_addr_within_range (struct target_ops *target, | |
3235 | CORE_ADDR addr, | |
3236 | CORE_ADDR start, int length) | |
3237 | { | |
3238 | return addr >= start && addr < start + length; | |
3239 | } | |
3240 | ||
c2250ad1 UW |
3241 | static struct gdbarch * |
3242 | default_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
3243 | { | |
5cd63fda PA |
3244 | inferior *inf = find_inferior_ptid (ptid); |
3245 | gdb_assert (inf != NULL); | |
3246 | return inf->gdbarch; | |
c2250ad1 UW |
3247 | } |
3248 | ||
c906108c | 3249 | static int |
555bbdeb TT |
3250 | return_zero (struct target_ops *ignore) |
3251 | { | |
3252 | return 0; | |
3253 | } | |
3254 | ||
3255 | static int | |
3256 | return_zero_has_execution (struct target_ops *ignore, ptid_t ignore2) | |
c906108c SS |
3257 | { |
3258 | return 0; | |
3259 | } | |
3260 | ||
ed9a39eb JM |
3261 | /* |
3262 | * Find the next target down the stack from the specified target. | |
3263 | */ | |
3264 | ||
3265 | struct target_ops * | |
fba45db2 | 3266 | find_target_beneath (struct target_ops *t) |
ed9a39eb | 3267 | { |
258b763a | 3268 | return t->beneath; |
ed9a39eb JM |
3269 | } |
3270 | ||
8b06beed TT |
3271 | /* See target.h. */ |
3272 | ||
3273 | struct target_ops * | |
3274 | find_target_at (enum strata stratum) | |
3275 | { | |
3276 | struct target_ops *t; | |
3277 | ||
3278 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3279 | if (t->to_stratum == stratum) | |
3280 | return t; | |
3281 | ||
3282 | return NULL; | |
3283 | } | |
3284 | ||
c906108c | 3285 | \f |
0f48b757 PA |
3286 | |
3287 | /* See target.h */ | |
3288 | ||
3289 | void | |
3290 | target_announce_detach (int from_tty) | |
3291 | { | |
3292 | pid_t pid; | |
a121b7c1 | 3293 | const char *exec_file; |
0f48b757 PA |
3294 | |
3295 | if (!from_tty) | |
3296 | return; | |
3297 | ||
3298 | exec_file = get_exec_file (0); | |
3299 | if (exec_file == NULL) | |
3300 | exec_file = ""; | |
3301 | ||
3302 | pid = ptid_get_pid (inferior_ptid); | |
3303 | printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file, | |
3304 | target_pid_to_str (pid_to_ptid (pid))); | |
3305 | gdb_flush (gdb_stdout); | |
3306 | } | |
3307 | ||
c906108c SS |
3308 | /* The inferior process has died. Long live the inferior! */ |
3309 | ||
3310 | void | |
fba45db2 | 3311 | generic_mourn_inferior (void) |
c906108c | 3312 | { |
7f9f62ba | 3313 | ptid_t ptid; |
c906108c | 3314 | |
7f9f62ba | 3315 | ptid = inferior_ptid; |
39f77062 | 3316 | inferior_ptid = null_ptid; |
7f9f62ba | 3317 | |
f59f708a PA |
3318 | /* Mark breakpoints uninserted in case something tries to delete a |
3319 | breakpoint while we delete the inferior's threads (which would | |
3320 | fail, since the inferior is long gone). */ | |
3321 | mark_breakpoints_out (); | |
3322 | ||
7f9f62ba PA |
3323 | if (!ptid_equal (ptid, null_ptid)) |
3324 | { | |
3325 | int pid = ptid_get_pid (ptid); | |
6c95b8df | 3326 | exit_inferior (pid); |
7f9f62ba PA |
3327 | } |
3328 | ||
f59f708a PA |
3329 | /* Note this wipes step-resume breakpoints, so needs to be done |
3330 | after exit_inferior, which ends up referencing the step-resume | |
3331 | breakpoints through clear_thread_inferior_resources. */ | |
c906108c | 3332 | breakpoint_init_inferior (inf_exited); |
f59f708a | 3333 | |
c906108c SS |
3334 | registers_changed (); |
3335 | ||
c906108c SS |
3336 | reopen_exec_file (); |
3337 | reinit_frame_cache (); | |
3338 | ||
9a4105ab AC |
3339 | if (deprecated_detach_hook) |
3340 | deprecated_detach_hook (); | |
c906108c SS |
3341 | } |
3342 | \f | |
fd0a2a6f MK |
3343 | /* Convert a normal process ID to a string. Returns the string in a |
3344 | static buffer. */ | |
c906108c | 3345 | |
7a114964 | 3346 | const char * |
39f77062 | 3347 | normal_pid_to_str (ptid_t ptid) |
c906108c | 3348 | { |
fd0a2a6f | 3349 | static char buf[32]; |
c906108c | 3350 | |
5fff8fc0 | 3351 | xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid)); |
c906108c SS |
3352 | return buf; |
3353 | } | |
3354 | ||
7a114964 | 3355 | static const char * |
770234d3 | 3356 | default_pid_to_str (struct target_ops *ops, ptid_t ptid) |
117de6a9 PA |
3357 | { |
3358 | return normal_pid_to_str (ptid); | |
3359 | } | |
3360 | ||
9b4eba8e HZ |
3361 | /* Error-catcher for target_find_memory_regions. */ |
3362 | static int | |
2e73927c TT |
3363 | dummy_find_memory_regions (struct target_ops *self, |
3364 | find_memory_region_ftype ignore1, void *ignore2) | |
be4d1333 | 3365 | { |
9b4eba8e | 3366 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3367 | return 0; |
3368 | } | |
3369 | ||
9b4eba8e HZ |
3370 | /* Error-catcher for target_make_corefile_notes. */ |
3371 | static char * | |
fc6691b2 TT |
3372 | dummy_make_corefile_notes (struct target_ops *self, |
3373 | bfd *ignore1, int *ignore2) | |
be4d1333 | 3374 | { |
9b4eba8e | 3375 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3376 | return NULL; |
3377 | } | |
3378 | ||
c906108c SS |
3379 | /* Set up the handful of non-empty slots needed by the dummy target |
3380 | vector. */ | |
3381 | ||
3382 | static void | |
fba45db2 | 3383 | init_dummy_target (void) |
c906108c SS |
3384 | { |
3385 | dummy_target.to_shortname = "None"; | |
3386 | dummy_target.to_longname = "None"; | |
3387 | dummy_target.to_doc = ""; | |
03583c20 UW |
3388 | dummy_target.to_supports_disable_randomization |
3389 | = find_default_supports_disable_randomization; | |
c906108c | 3390 | dummy_target.to_stratum = dummy_stratum; |
555bbdeb TT |
3391 | dummy_target.to_has_all_memory = return_zero; |
3392 | dummy_target.to_has_memory = return_zero; | |
3393 | dummy_target.to_has_stack = return_zero; | |
3394 | dummy_target.to_has_registers = return_zero; | |
3395 | dummy_target.to_has_execution = return_zero_has_execution; | |
c906108c | 3396 | dummy_target.to_magic = OPS_MAGIC; |
1101cb7b TT |
3397 | |
3398 | install_dummy_methods (&dummy_target); | |
c906108c | 3399 | } |
c906108c | 3400 | \f |
c906108c | 3401 | |
f1c07ab0 | 3402 | void |
460014f5 | 3403 | target_close (struct target_ops *targ) |
f1c07ab0 | 3404 | { |
7fdc1521 TT |
3405 | gdb_assert (!target_is_pushed (targ)); |
3406 | ||
f1c07ab0 | 3407 | if (targ->to_xclose != NULL) |
460014f5 | 3408 | targ->to_xclose (targ); |
f1c07ab0 | 3409 | else if (targ->to_close != NULL) |
de90e03d | 3410 | targ->to_close (targ); |
947b8855 PA |
3411 | |
3412 | if (targetdebug) | |
460014f5 | 3413 | fprintf_unfiltered (gdb_stdlog, "target_close ()\n"); |
f1c07ab0 AC |
3414 | } |
3415 | ||
28439f5e PA |
3416 | int |
3417 | target_thread_alive (ptid_t ptid) | |
c906108c | 3418 | { |
a7068b60 | 3419 | return current_target.to_thread_alive (¤t_target, ptid); |
28439f5e PA |
3420 | } |
3421 | ||
3422 | void | |
e8032dde | 3423 | target_update_thread_list (void) |
28439f5e | 3424 | { |
e8032dde | 3425 | current_target.to_update_thread_list (¤t_target); |
c906108c SS |
3426 | } |
3427 | ||
d914c394 SS |
3428 | void |
3429 | target_stop (ptid_t ptid) | |
3430 | { | |
3431 | if (!may_stop) | |
3432 | { | |
3433 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3434 | return; | |
3435 | } | |
3436 | ||
1eab8a48 | 3437 | (*current_target.to_stop) (¤t_target, ptid); |
d914c394 SS |
3438 | } |
3439 | ||
bfedc46a | 3440 | void |
e671cd59 | 3441 | target_interrupt () |
bfedc46a PA |
3442 | { |
3443 | if (!may_stop) | |
3444 | { | |
3445 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3446 | return; | |
3447 | } | |
3448 | ||
e671cd59 | 3449 | (*current_target.to_interrupt) (¤t_target); |
bfedc46a PA |
3450 | } |
3451 | ||
abc56d60 PA |
3452 | /* See target.h. */ |
3453 | ||
93692b58 PA |
3454 | void |
3455 | target_pass_ctrlc (void) | |
3456 | { | |
3457 | (*current_target.to_pass_ctrlc) (¤t_target); | |
3458 | } | |
3459 | ||
3460 | /* See target.h. */ | |
3461 | ||
3462 | void | |
3463 | default_target_pass_ctrlc (struct target_ops *ops) | |
3464 | { | |
e671cd59 | 3465 | target_interrupt (); |
93692b58 PA |
3466 | } |
3467 | ||
f8c1d06b GB |
3468 | /* See target/target.h. */ |
3469 | ||
3470 | void | |
03f4463b | 3471 | target_stop_and_wait (ptid_t ptid) |
f8c1d06b GB |
3472 | { |
3473 | struct target_waitstatus status; | |
3474 | int was_non_stop = non_stop; | |
3475 | ||
3476 | non_stop = 1; | |
3477 | target_stop (ptid); | |
3478 | ||
3479 | memset (&status, 0, sizeof (status)); | |
3480 | target_wait (ptid, &status, 0); | |
3481 | ||
3482 | non_stop = was_non_stop; | |
3483 | } | |
3484 | ||
3485 | /* See target/target.h. */ | |
3486 | ||
3487 | void | |
03f4463b | 3488 | target_continue_no_signal (ptid_t ptid) |
f8c1d06b GB |
3489 | { |
3490 | target_resume (ptid, 0, GDB_SIGNAL_0); | |
3491 | } | |
3492 | ||
049a8570 SDJ |
3493 | /* See target/target.h. */ |
3494 | ||
3495 | void | |
3496 | target_continue (ptid_t ptid, enum gdb_signal signal) | |
3497 | { | |
3498 | target_resume (ptid, 0, signal); | |
3499 | } | |
3500 | ||
09826ec5 PA |
3501 | /* Concatenate ELEM to LIST, a comma separate list, and return the |
3502 | result. The LIST incoming argument is released. */ | |
3503 | ||
3504 | static char * | |
3505 | str_comma_list_concat_elem (char *list, const char *elem) | |
3506 | { | |
3507 | if (list == NULL) | |
3508 | return xstrdup (elem); | |
3509 | else | |
3510 | return reconcat (list, list, ", ", elem, (char *) NULL); | |
3511 | } | |
3512 | ||
3513 | /* Helper for target_options_to_string. If OPT is present in | |
3514 | TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET. | |
3515 | Returns the new resulting string. OPT is removed from | |
3516 | TARGET_OPTIONS. */ | |
3517 | ||
3518 | static char * | |
3519 | do_option (int *target_options, char *ret, | |
a121b7c1 | 3520 | int opt, const char *opt_str) |
09826ec5 PA |
3521 | { |
3522 | if ((*target_options & opt) != 0) | |
3523 | { | |
3524 | ret = str_comma_list_concat_elem (ret, opt_str); | |
3525 | *target_options &= ~opt; | |
3526 | } | |
3527 | ||
3528 | return ret; | |
3529 | } | |
3530 | ||
3531 | char * | |
3532 | target_options_to_string (int target_options) | |
3533 | { | |
3534 | char *ret = NULL; | |
3535 | ||
3536 | #define DO_TARG_OPTION(OPT) \ | |
3537 | ret = do_option (&target_options, ret, OPT, #OPT) | |
3538 | ||
3539 | DO_TARG_OPTION (TARGET_WNOHANG); | |
3540 | ||
3541 | if (target_options != 0) | |
3542 | ret = str_comma_list_concat_elem (ret, "unknown???"); | |
3543 | ||
3544 | if (ret == NULL) | |
3545 | ret = xstrdup (""); | |
3546 | return ret; | |
3547 | } | |
3548 | ||
28439f5e PA |
3549 | void |
3550 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 3551 | { |
ad5989bd TT |
3552 | current_target.to_fetch_registers (¤t_target, regcache, regno); |
3553 | if (targetdebug) | |
ef79d9a3 | 3554 | regcache->debug_print_register ("target_fetch_registers", regno); |
c906108c SS |
3555 | } |
3556 | ||
28439f5e PA |
3557 | void |
3558 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 3559 | { |
d914c394 SS |
3560 | if (!may_write_registers) |
3561 | error (_("Writing to registers is not allowed (regno %d)"), regno); | |
3562 | ||
6b84065d TT |
3563 | current_target.to_store_registers (¤t_target, regcache, regno); |
3564 | if (targetdebug) | |
28439f5e | 3565 | { |
ef79d9a3 | 3566 | regcache->debug_print_register ("target_store_registers", regno); |
28439f5e | 3567 | } |
c906108c SS |
3568 | } |
3569 | ||
dc146f7c VP |
3570 | int |
3571 | target_core_of_thread (ptid_t ptid) | |
3572 | { | |
a7068b60 | 3573 | return current_target.to_core_of_thread (¤t_target, ptid); |
dc146f7c VP |
3574 | } |
3575 | ||
936d2992 PA |
3576 | int |
3577 | simple_verify_memory (struct target_ops *ops, | |
3578 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
3579 | { | |
3580 | LONGEST total_xfered = 0; | |
3581 | ||
3582 | while (total_xfered < size) | |
3583 | { | |
3584 | ULONGEST xfered_len; | |
3585 | enum target_xfer_status status; | |
3586 | gdb_byte buf[1024]; | |
768adc05 | 3587 | ULONGEST howmuch = std::min<ULONGEST> (sizeof (buf), size - total_xfered); |
936d2992 PA |
3588 | |
3589 | status = target_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
3590 | buf, NULL, lma + total_xfered, howmuch, | |
3591 | &xfered_len); | |
3592 | if (status == TARGET_XFER_OK | |
3593 | && memcmp (data + total_xfered, buf, xfered_len) == 0) | |
3594 | { | |
3595 | total_xfered += xfered_len; | |
3596 | QUIT; | |
3597 | } | |
3598 | else | |
3599 | return 0; | |
3600 | } | |
3601 | return 1; | |
3602 | } | |
3603 | ||
3604 | /* Default implementation of memory verification. */ | |
3605 | ||
3606 | static int | |
3607 | default_verify_memory (struct target_ops *self, | |
3608 | const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3609 | { | |
3610 | /* Start over from the top of the target stack. */ | |
3611 | return simple_verify_memory (current_target.beneath, | |
3612 | data, memaddr, size); | |
3613 | } | |
3614 | ||
4a5e7a5b PA |
3615 | int |
3616 | target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3617 | { | |
a7068b60 TT |
3618 | return current_target.to_verify_memory (¤t_target, |
3619 | data, memaddr, size); | |
4a5e7a5b PA |
3620 | } |
3621 | ||
9c06b0b4 TJB |
3622 | /* The documentation for this function is in its prototype declaration in |
3623 | target.h. */ | |
3624 | ||
3625 | int | |
f4b0a671 SM |
3626 | target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, |
3627 | enum target_hw_bp_type rw) | |
9c06b0b4 | 3628 | { |
a7068b60 TT |
3629 | return current_target.to_insert_mask_watchpoint (¤t_target, |
3630 | addr, mask, rw); | |
9c06b0b4 TJB |
3631 | } |
3632 | ||
3633 | /* The documentation for this function is in its prototype declaration in | |
3634 | target.h. */ | |
3635 | ||
3636 | int | |
f4b0a671 SM |
3637 | target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, |
3638 | enum target_hw_bp_type rw) | |
9c06b0b4 | 3639 | { |
a7068b60 TT |
3640 | return current_target.to_remove_mask_watchpoint (¤t_target, |
3641 | addr, mask, rw); | |
9c06b0b4 TJB |
3642 | } |
3643 | ||
3644 | /* The documentation for this function is in its prototype declaration | |
3645 | in target.h. */ | |
3646 | ||
3647 | int | |
3648 | target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask) | |
3649 | { | |
6c7e5e5c TT |
3650 | return current_target.to_masked_watch_num_registers (¤t_target, |
3651 | addr, mask); | |
9c06b0b4 TJB |
3652 | } |
3653 | ||
f1310107 TJB |
3654 | /* The documentation for this function is in its prototype declaration |
3655 | in target.h. */ | |
3656 | ||
3657 | int | |
3658 | target_ranged_break_num_registers (void) | |
3659 | { | |
a134316b | 3660 | return current_target.to_ranged_break_num_registers (¤t_target); |
f1310107 TJB |
3661 | } |
3662 | ||
02d27625 MM |
3663 | /* See target.h. */ |
3664 | ||
02d27625 | 3665 | struct btrace_target_info * |
f4abbc16 | 3666 | target_enable_btrace (ptid_t ptid, const struct btrace_config *conf) |
02d27625 | 3667 | { |
f4abbc16 | 3668 | return current_target.to_enable_btrace (¤t_target, ptid, conf); |
02d27625 MM |
3669 | } |
3670 | ||
3671 | /* See target.h. */ | |
3672 | ||
3673 | void | |
3674 | target_disable_btrace (struct btrace_target_info *btinfo) | |
3675 | { | |
8dc292d3 | 3676 | current_target.to_disable_btrace (¤t_target, btinfo); |
02d27625 MM |
3677 | } |
3678 | ||
3679 | /* See target.h. */ | |
3680 | ||
3681 | void | |
3682 | target_teardown_btrace (struct btrace_target_info *btinfo) | |
3683 | { | |
9ace480d | 3684 | current_target.to_teardown_btrace (¤t_target, btinfo); |
02d27625 MM |
3685 | } |
3686 | ||
3687 | /* See target.h. */ | |
3688 | ||
969c39fb | 3689 | enum btrace_error |
734b0e4b | 3690 | target_read_btrace (struct btrace_data *btrace, |
969c39fb | 3691 | struct btrace_target_info *btinfo, |
02d27625 MM |
3692 | enum btrace_read_type type) |
3693 | { | |
eb5b20d4 | 3694 | return current_target.to_read_btrace (¤t_target, btrace, btinfo, type); |
02d27625 MM |
3695 | } |
3696 | ||
d02ed0bb MM |
3697 | /* See target.h. */ |
3698 | ||
f4abbc16 MM |
3699 | const struct btrace_config * |
3700 | target_btrace_conf (const struct btrace_target_info *btinfo) | |
3701 | { | |
3702 | return current_target.to_btrace_conf (¤t_target, btinfo); | |
3703 | } | |
3704 | ||
3705 | /* See target.h. */ | |
3706 | ||
7c1687a9 MM |
3707 | void |
3708 | target_stop_recording (void) | |
3709 | { | |
ee97f592 | 3710 | current_target.to_stop_recording (¤t_target); |
7c1687a9 MM |
3711 | } |
3712 | ||
3713 | /* See target.h. */ | |
3714 | ||
d02ed0bb | 3715 | void |
85e1311a | 3716 | target_save_record (const char *filename) |
d02ed0bb | 3717 | { |
f09e2107 | 3718 | current_target.to_save_record (¤t_target, filename); |
d02ed0bb MM |
3719 | } |
3720 | ||
3721 | /* See target.h. */ | |
3722 | ||
3723 | int | |
3724 | target_supports_delete_record (void) | |
3725 | { | |
3726 | struct target_ops *t; | |
3727 | ||
3728 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
b0ed115f TT |
3729 | if (t->to_delete_record != delegate_delete_record |
3730 | && t->to_delete_record != tdefault_delete_record) | |
d02ed0bb MM |
3731 | return 1; |
3732 | ||
3733 | return 0; | |
3734 | } | |
3735 | ||
3736 | /* See target.h. */ | |
3737 | ||
3738 | void | |
3739 | target_delete_record (void) | |
3740 | { | |
07366925 | 3741 | current_target.to_delete_record (¤t_target); |
d02ed0bb MM |
3742 | } |
3743 | ||
3744 | /* See target.h. */ | |
3745 | ||
b158a20f TW |
3746 | enum record_method |
3747 | target_record_method (ptid_t ptid) | |
3748 | { | |
3749 | return current_target.to_record_method (¤t_target, ptid); | |
3750 | } | |
3751 | ||
3752 | /* See target.h. */ | |
3753 | ||
d02ed0bb | 3754 | int |
a52eab48 | 3755 | target_record_is_replaying (ptid_t ptid) |
d02ed0bb | 3756 | { |
a52eab48 | 3757 | return current_target.to_record_is_replaying (¤t_target, ptid); |
d02ed0bb MM |
3758 | } |
3759 | ||
3760 | /* See target.h. */ | |
3761 | ||
7ff27e9b MM |
3762 | int |
3763 | target_record_will_replay (ptid_t ptid, int dir) | |
3764 | { | |
3765 | return current_target.to_record_will_replay (¤t_target, ptid, dir); | |
3766 | } | |
3767 | ||
3768 | /* See target.h. */ | |
3769 | ||
797094dd MM |
3770 | void |
3771 | target_record_stop_replaying (void) | |
3772 | { | |
3773 | current_target.to_record_stop_replaying (¤t_target); | |
3774 | } | |
3775 | ||
3776 | /* See target.h. */ | |
3777 | ||
d02ed0bb MM |
3778 | void |
3779 | target_goto_record_begin (void) | |
3780 | { | |
671e76cc | 3781 | current_target.to_goto_record_begin (¤t_target); |
d02ed0bb MM |
3782 | } |
3783 | ||
3784 | /* See target.h. */ | |
3785 | ||
3786 | void | |
3787 | target_goto_record_end (void) | |
3788 | { | |
e9179bb3 | 3789 | current_target.to_goto_record_end (¤t_target); |
d02ed0bb MM |
3790 | } |
3791 | ||
3792 | /* See target.h. */ | |
3793 | ||
3794 | void | |
3795 | target_goto_record (ULONGEST insn) | |
3796 | { | |
05969c84 | 3797 | current_target.to_goto_record (¤t_target, insn); |
d02ed0bb MM |
3798 | } |
3799 | ||
67c86d06 MM |
3800 | /* See target.h. */ |
3801 | ||
3802 | void | |
9a24775b | 3803 | target_insn_history (int size, gdb_disassembly_flags flags) |
67c86d06 | 3804 | { |
3679abfa | 3805 | current_target.to_insn_history (¤t_target, size, flags); |
67c86d06 MM |
3806 | } |
3807 | ||
3808 | /* See target.h. */ | |
3809 | ||
3810 | void | |
9a24775b PA |
3811 | target_insn_history_from (ULONGEST from, int size, |
3812 | gdb_disassembly_flags flags) | |
67c86d06 | 3813 | { |
8444ab58 | 3814 | current_target.to_insn_history_from (¤t_target, from, size, flags); |
67c86d06 MM |
3815 | } |
3816 | ||
3817 | /* See target.h. */ | |
3818 | ||
3819 | void | |
9a24775b PA |
3820 | target_insn_history_range (ULONGEST begin, ULONGEST end, |
3821 | gdb_disassembly_flags flags) | |
67c86d06 | 3822 | { |
c29302cc | 3823 | current_target.to_insn_history_range (¤t_target, begin, end, flags); |
67c86d06 MM |
3824 | } |
3825 | ||
15984c13 MM |
3826 | /* See target.h. */ |
3827 | ||
3828 | void | |
0cb7c7b0 | 3829 | target_call_history (int size, record_print_flags flags) |
15984c13 | 3830 | { |
170049d4 | 3831 | current_target.to_call_history (¤t_target, size, flags); |
15984c13 MM |
3832 | } |
3833 | ||
3834 | /* See target.h. */ | |
3835 | ||
3836 | void | |
0cb7c7b0 | 3837 | target_call_history_from (ULONGEST begin, int size, record_print_flags flags) |
15984c13 | 3838 | { |
16fc27d6 | 3839 | current_target.to_call_history_from (¤t_target, begin, size, flags); |
15984c13 MM |
3840 | } |
3841 | ||
3842 | /* See target.h. */ | |
3843 | ||
3844 | void | |
0cb7c7b0 | 3845 | target_call_history_range (ULONGEST begin, ULONGEST end, record_print_flags flags) |
15984c13 | 3846 | { |
115d9817 | 3847 | current_target.to_call_history_range (¤t_target, begin, end, flags); |
15984c13 MM |
3848 | } |
3849 | ||
ea001bdc MM |
3850 | /* See target.h. */ |
3851 | ||
3852 | const struct frame_unwind * | |
3853 | target_get_unwinder (void) | |
3854 | { | |
ac01945b | 3855 | return current_target.to_get_unwinder (¤t_target); |
ea001bdc MM |
3856 | } |
3857 | ||
3858 | /* See target.h. */ | |
3859 | ||
3860 | const struct frame_unwind * | |
3861 | target_get_tailcall_unwinder (void) | |
3862 | { | |
ac01945b | 3863 | return current_target.to_get_tailcall_unwinder (¤t_target); |
ea001bdc MM |
3864 | } |
3865 | ||
5fff78c4 MM |
3866 | /* See target.h. */ |
3867 | ||
3868 | void | |
3869 | target_prepare_to_generate_core (void) | |
3870 | { | |
3871 | current_target.to_prepare_to_generate_core (¤t_target); | |
3872 | } | |
3873 | ||
3874 | /* See target.h. */ | |
3875 | ||
3876 | void | |
3877 | target_done_generating_core (void) | |
3878 | { | |
3879 | current_target.to_done_generating_core (¤t_target); | |
3880 | } | |
3881 | ||
c906108c | 3882 | static void |
fba45db2 | 3883 | setup_target_debug (void) |
c906108c SS |
3884 | { |
3885 | memcpy (&debug_target, ¤t_target, sizeof debug_target); | |
3886 | ||
a7068b60 | 3887 | init_debug_target (¤t_target); |
c906108c | 3888 | } |
c906108c | 3889 | \f |
c5aa993b JM |
3890 | |
3891 | static char targ_desc[] = | |
3e43a32a MS |
3892 | "Names of targets and files being debugged.\nShows the entire \ |
3893 | stack of targets currently in use (including the exec-file,\n\ | |
c906108c SS |
3894 | core-file, and process, if any), as well as the symbol file name."; |
3895 | ||
a53f3625 | 3896 | static void |
a30bf1f1 TT |
3897 | default_rcmd (struct target_ops *self, const char *command, |
3898 | struct ui_file *output) | |
a53f3625 TT |
3899 | { |
3900 | error (_("\"monitor\" command not supported by this target.")); | |
3901 | } | |
3902 | ||
96baa820 | 3903 | static void |
0b39b52e | 3904 | do_monitor_command (const char *cmd, int from_tty) |
96baa820 | 3905 | { |
96baa820 JM |
3906 | target_rcmd (cmd, gdb_stdtarg); |
3907 | } | |
3908 | ||
78cbbba8 LM |
3909 | /* Erases all the memory regions marked as flash. CMD and FROM_TTY are |
3910 | ignored. */ | |
3911 | ||
3912 | void | |
0b39b52e | 3913 | flash_erase_command (const char *cmd, int from_tty) |
78cbbba8 LM |
3914 | { |
3915 | /* Used to communicate termination of flash operations to the target. */ | |
3916 | bool found_flash_region = false; | |
78cbbba8 LM |
3917 | struct gdbarch *gdbarch = target_gdbarch (); |
3918 | ||
a664f67e | 3919 | std::vector<mem_region> mem_regions = target_memory_map (); |
78cbbba8 LM |
3920 | |
3921 | /* Iterate over all memory regions. */ | |
a664f67e | 3922 | for (const mem_region &m : mem_regions) |
78cbbba8 | 3923 | { |
78cbbba8 | 3924 | /* Is this a flash memory region? */ |
a664f67e | 3925 | if (m.attrib.mode == MEM_FLASH) |
78cbbba8 LM |
3926 | { |
3927 | found_flash_region = true; | |
a664f67e | 3928 | target_flash_erase (m.lo, m.hi - m.lo); |
78cbbba8 | 3929 | |
76f9c9cf | 3930 | ui_out_emit_tuple tuple_emitter (current_uiout, "erased-regions"); |
78cbbba8 LM |
3931 | |
3932 | current_uiout->message (_("Erasing flash memory region at address ")); | |
a664f67e | 3933 | current_uiout->field_fmt ("address", "%s", paddress (gdbarch, m.lo)); |
78cbbba8 | 3934 | current_uiout->message (", size = "); |
a664f67e | 3935 | current_uiout->field_fmt ("size", "%s", hex_string (m.hi - m.lo)); |
78cbbba8 | 3936 | current_uiout->message ("\n"); |
78cbbba8 LM |
3937 | } |
3938 | } | |
3939 | ||
3940 | /* Did we do any flash operations? If so, we need to finalize them. */ | |
3941 | if (found_flash_region) | |
3942 | target_flash_done (); | |
3943 | else | |
3944 | current_uiout->message (_("No flash memory regions found.\n")); | |
3945 | } | |
3946 | ||
87680a14 JB |
3947 | /* Print the name of each layers of our target stack. */ |
3948 | ||
3949 | static void | |
d3cb6b99 | 3950 | maintenance_print_target_stack (const char *cmd, int from_tty) |
87680a14 JB |
3951 | { |
3952 | struct target_ops *t; | |
3953 | ||
3954 | printf_filtered (_("The current target stack is:\n")); | |
3955 | ||
3956 | for (t = target_stack; t != NULL; t = t->beneath) | |
3957 | { | |
3958 | printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname); | |
3959 | } | |
3960 | } | |
3961 | ||
372316f1 PA |
3962 | /* See target.h. */ |
3963 | ||
3964 | void | |
3965 | target_async (int enable) | |
3966 | { | |
3967 | infrun_async (enable); | |
3968 | current_target.to_async (¤t_target, enable); | |
3969 | } | |
3970 | ||
65706a29 PA |
3971 | /* See target.h. */ |
3972 | ||
3973 | void | |
3974 | target_thread_events (int enable) | |
3975 | { | |
3976 | current_target.to_thread_events (¤t_target, enable); | |
3977 | } | |
3978 | ||
329ea579 PA |
3979 | /* Controls if targets can report that they can/are async. This is |
3980 | just for maintainers to use when debugging gdb. */ | |
3981 | int target_async_permitted = 1; | |
c6ebd6cf VP |
3982 | |
3983 | /* The set command writes to this variable. If the inferior is | |
b5419e49 | 3984 | executing, target_async_permitted is *not* updated. */ |
329ea579 | 3985 | static int target_async_permitted_1 = 1; |
c6ebd6cf VP |
3986 | |
3987 | static void | |
eb4c3f4a | 3988 | maint_set_target_async_command (const char *args, int from_tty, |
329ea579 | 3989 | struct cmd_list_element *c) |
c6ebd6cf | 3990 | { |
c35b1492 | 3991 | if (have_live_inferiors ()) |
c6ebd6cf VP |
3992 | { |
3993 | target_async_permitted_1 = target_async_permitted; | |
3994 | error (_("Cannot change this setting while the inferior is running.")); | |
3995 | } | |
3996 | ||
3997 | target_async_permitted = target_async_permitted_1; | |
3998 | } | |
3999 | ||
4000 | static void | |
329ea579 PA |
4001 | maint_show_target_async_command (struct ui_file *file, int from_tty, |
4002 | struct cmd_list_element *c, | |
4003 | const char *value) | |
c6ebd6cf | 4004 | { |
3e43a32a MS |
4005 | fprintf_filtered (file, |
4006 | _("Controlling the inferior in " | |
4007 | "asynchronous mode is %s.\n"), value); | |
c6ebd6cf VP |
4008 | } |
4009 | ||
fbea99ea PA |
4010 | /* Return true if the target operates in non-stop mode even with "set |
4011 | non-stop off". */ | |
4012 | ||
4013 | static int | |
4014 | target_always_non_stop_p (void) | |
4015 | { | |
4016 | return current_target.to_always_non_stop_p (¤t_target); | |
4017 | } | |
4018 | ||
4019 | /* See target.h. */ | |
4020 | ||
4021 | int | |
4022 | target_is_non_stop_p (void) | |
4023 | { | |
4024 | return (non_stop | |
4025 | || target_non_stop_enabled == AUTO_BOOLEAN_TRUE | |
4026 | || (target_non_stop_enabled == AUTO_BOOLEAN_AUTO | |
4027 | && target_always_non_stop_p ())); | |
4028 | } | |
4029 | ||
4030 | /* Controls if targets can report that they always run in non-stop | |
4031 | mode. This is just for maintainers to use when debugging gdb. */ | |
4032 | enum auto_boolean target_non_stop_enabled = AUTO_BOOLEAN_AUTO; | |
4033 | ||
4034 | /* The set command writes to this variable. If the inferior is | |
4035 | executing, target_non_stop_enabled is *not* updated. */ | |
4036 | static enum auto_boolean target_non_stop_enabled_1 = AUTO_BOOLEAN_AUTO; | |
4037 | ||
4038 | /* Implementation of "maint set target-non-stop". */ | |
4039 | ||
4040 | static void | |
eb4c3f4a | 4041 | maint_set_target_non_stop_command (const char *args, int from_tty, |
fbea99ea PA |
4042 | struct cmd_list_element *c) |
4043 | { | |
4044 | if (have_live_inferiors ()) | |
4045 | { | |
4046 | target_non_stop_enabled_1 = target_non_stop_enabled; | |
4047 | error (_("Cannot change this setting while the inferior is running.")); | |
4048 | } | |
4049 | ||
4050 | target_non_stop_enabled = target_non_stop_enabled_1; | |
4051 | } | |
4052 | ||
4053 | /* Implementation of "maint show target-non-stop". */ | |
4054 | ||
4055 | static void | |
4056 | maint_show_target_non_stop_command (struct ui_file *file, int from_tty, | |
4057 | struct cmd_list_element *c, | |
4058 | const char *value) | |
4059 | { | |
4060 | if (target_non_stop_enabled == AUTO_BOOLEAN_AUTO) | |
4061 | fprintf_filtered (file, | |
4062 | _("Whether the target is always in non-stop mode " | |
4063 | "is %s (currently %s).\n"), value, | |
4064 | target_always_non_stop_p () ? "on" : "off"); | |
4065 | else | |
4066 | fprintf_filtered (file, | |
4067 | _("Whether the target is always in non-stop mode " | |
4068 | "is %s.\n"), value); | |
4069 | } | |
4070 | ||
d914c394 SS |
4071 | /* Temporary copies of permission settings. */ |
4072 | ||
4073 | static int may_write_registers_1 = 1; | |
4074 | static int may_write_memory_1 = 1; | |
4075 | static int may_insert_breakpoints_1 = 1; | |
4076 | static int may_insert_tracepoints_1 = 1; | |
4077 | static int may_insert_fast_tracepoints_1 = 1; | |
4078 | static int may_stop_1 = 1; | |
4079 | ||
4080 | /* Make the user-set values match the real values again. */ | |
4081 | ||
4082 | void | |
4083 | update_target_permissions (void) | |
4084 | { | |
4085 | may_write_registers_1 = may_write_registers; | |
4086 | may_write_memory_1 = may_write_memory; | |
4087 | may_insert_breakpoints_1 = may_insert_breakpoints; | |
4088 | may_insert_tracepoints_1 = may_insert_tracepoints; | |
4089 | may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints; | |
4090 | may_stop_1 = may_stop; | |
4091 | } | |
4092 | ||
4093 | /* The one function handles (most of) the permission flags in the same | |
4094 | way. */ | |
4095 | ||
4096 | static void | |
eb4c3f4a | 4097 | set_target_permissions (const char *args, int from_tty, |
d914c394 SS |
4098 | struct cmd_list_element *c) |
4099 | { | |
4100 | if (target_has_execution) | |
4101 | { | |
4102 | update_target_permissions (); | |
4103 | error (_("Cannot change this setting while the inferior is running.")); | |
4104 | } | |
4105 | ||
4106 | /* Make the real values match the user-changed values. */ | |
4107 | may_write_registers = may_write_registers_1; | |
4108 | may_insert_breakpoints = may_insert_breakpoints_1; | |
4109 | may_insert_tracepoints = may_insert_tracepoints_1; | |
4110 | may_insert_fast_tracepoints = may_insert_fast_tracepoints_1; | |
4111 | may_stop = may_stop_1; | |
4112 | update_observer_mode (); | |
4113 | } | |
4114 | ||
4115 | /* Set memory write permission independently of observer mode. */ | |
4116 | ||
4117 | static void | |
eb4c3f4a | 4118 | set_write_memory_permission (const char *args, int from_tty, |
d914c394 SS |
4119 | struct cmd_list_element *c) |
4120 | { | |
4121 | /* Make the real values match the user-changed values. */ | |
4122 | may_write_memory = may_write_memory_1; | |
4123 | update_observer_mode (); | |
4124 | } | |
4125 | ||
1b30aaa5 YQ |
4126 | #if GDB_SELF_TEST |
4127 | namespace selftests { | |
4128 | ||
4129 | static int | |
4130 | test_target_has_registers (target_ops *self) | |
4131 | { | |
4132 | return 1; | |
4133 | } | |
4134 | ||
4135 | static int | |
4136 | test_target_has_stack (target_ops *self) | |
4137 | { | |
4138 | return 1; | |
4139 | } | |
4140 | ||
4141 | static int | |
4142 | test_target_has_memory (target_ops *self) | |
4143 | { | |
4144 | return 1; | |
4145 | } | |
4146 | ||
4147 | static void | |
4148 | test_target_prepare_to_store (target_ops *self, regcache *regs) | |
4149 | { | |
4150 | } | |
4151 | ||
4152 | static void | |
4153 | test_target_store_registers (target_ops *self, regcache *regs, int regno) | |
4154 | { | |
4155 | } | |
4156 | ||
4157 | test_target_ops::test_target_ops () | |
4158 | : target_ops {} | |
4159 | { | |
4160 | to_magic = OPS_MAGIC; | |
4161 | to_stratum = process_stratum; | |
4162 | to_has_memory = test_target_has_memory; | |
4163 | to_has_stack = test_target_has_stack; | |
4164 | to_has_registers = test_target_has_registers; | |
4165 | to_prepare_to_store = test_target_prepare_to_store; | |
4166 | to_store_registers = test_target_store_registers; | |
4167 | ||
4168 | complete_target_initialization (this); | |
4169 | } | |
4170 | ||
4171 | } // namespace selftests | |
4172 | #endif /* GDB_SELF_TEST */ | |
d914c394 | 4173 | |
c906108c | 4174 | void |
fba45db2 | 4175 | initialize_targets (void) |
c906108c SS |
4176 | { |
4177 | init_dummy_target (); | |
4178 | push_target (&dummy_target); | |
4179 | ||
11db9430 SM |
4180 | add_info ("target", info_target_command, targ_desc); |
4181 | add_info ("files", info_target_command, targ_desc); | |
c906108c | 4182 | |
ccce17b0 | 4183 | add_setshow_zuinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
85c07804 AC |
4184 | Set target debugging."), _("\ |
4185 | Show target debugging."), _("\ | |
333dabeb | 4186 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
3cecbbbe TT |
4187 | verbose."), |
4188 | set_targetdebug, | |
ccce17b0 YQ |
4189 | show_targetdebug, |
4190 | &setdebuglist, &showdebuglist); | |
3a11626d | 4191 | |
2bc416ba | 4192 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
4193 | &trust_readonly, _("\ |
4194 | Set mode for reading from readonly sections."), _("\ | |
4195 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
4196 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
4197 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 4198 | result in significant performance improvement for remote targets."), |
2c5b56ce | 4199 | NULL, |
920d2a44 | 4200 | show_trust_readonly, |
e707bbc2 | 4201 | &setlist, &showlist); |
96baa820 JM |
4202 | |
4203 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 4204 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 4205 | |
87680a14 JB |
4206 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
4207 | _("Print the name of each layer of the internal target stack."), | |
4208 | &maintenanceprintlist); | |
4209 | ||
c6ebd6cf VP |
4210 | add_setshow_boolean_cmd ("target-async", no_class, |
4211 | &target_async_permitted_1, _("\ | |
4212 | Set whether gdb controls the inferior in asynchronous mode."), _("\ | |
4213 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
4214 | Tells gdb whether to control the inferior in asynchronous mode."), | |
329ea579 PA |
4215 | maint_set_target_async_command, |
4216 | maint_show_target_async_command, | |
4217 | &maintenance_set_cmdlist, | |
4218 | &maintenance_show_cmdlist); | |
c6ebd6cf | 4219 | |
fbea99ea PA |
4220 | add_setshow_auto_boolean_cmd ("target-non-stop", no_class, |
4221 | &target_non_stop_enabled_1, _("\ | |
4222 | Set whether gdb always controls the inferior in non-stop mode."), _("\ | |
4223 | Show whether gdb always controls the inferior in non-stop mode."), _("\ | |
4224 | Tells gdb whether to control the inferior in non-stop mode."), | |
4225 | maint_set_target_non_stop_command, | |
4226 | maint_show_target_non_stop_command, | |
4227 | &maintenance_set_cmdlist, | |
4228 | &maintenance_show_cmdlist); | |
4229 | ||
d914c394 SS |
4230 | add_setshow_boolean_cmd ("may-write-registers", class_support, |
4231 | &may_write_registers_1, _("\ | |
4232 | Set permission to write into registers."), _("\ | |
4233 | Show permission to write into registers."), _("\ | |
4234 | When this permission is on, GDB may write into the target's registers.\n\ | |
4235 | Otherwise, any sort of write attempt will result in an error."), | |
4236 | set_target_permissions, NULL, | |
4237 | &setlist, &showlist); | |
4238 | ||
4239 | add_setshow_boolean_cmd ("may-write-memory", class_support, | |
4240 | &may_write_memory_1, _("\ | |
4241 | Set permission to write into target memory."), _("\ | |
4242 | Show permission to write into target memory."), _("\ | |
4243 | When this permission is on, GDB may write into the target's memory.\n\ | |
4244 | Otherwise, any sort of write attempt will result in an error."), | |
4245 | set_write_memory_permission, NULL, | |
4246 | &setlist, &showlist); | |
4247 | ||
4248 | add_setshow_boolean_cmd ("may-insert-breakpoints", class_support, | |
4249 | &may_insert_breakpoints_1, _("\ | |
4250 | Set permission to insert breakpoints in the target."), _("\ | |
4251 | Show permission to insert breakpoints in the target."), _("\ | |
4252 | When this permission is on, GDB may insert breakpoints in the program.\n\ | |
4253 | Otherwise, any sort of insertion attempt will result in an error."), | |
4254 | set_target_permissions, NULL, | |
4255 | &setlist, &showlist); | |
4256 | ||
4257 | add_setshow_boolean_cmd ("may-insert-tracepoints", class_support, | |
4258 | &may_insert_tracepoints_1, _("\ | |
4259 | Set permission to insert tracepoints in the target."), _("\ | |
4260 | Show permission to insert tracepoints in the target."), _("\ | |
4261 | When this permission is on, GDB may insert tracepoints in the program.\n\ | |
4262 | Otherwise, any sort of insertion attempt will result in an error."), | |
4263 | set_target_permissions, NULL, | |
4264 | &setlist, &showlist); | |
4265 | ||
4266 | add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support, | |
4267 | &may_insert_fast_tracepoints_1, _("\ | |
4268 | Set permission to insert fast tracepoints in the target."), _("\ | |
4269 | Show permission to insert fast tracepoints in the target."), _("\ | |
4270 | When this permission is on, GDB may insert fast tracepoints.\n\ | |
4271 | Otherwise, any sort of insertion attempt will result in an error."), | |
4272 | set_target_permissions, NULL, | |
4273 | &setlist, &showlist); | |
4274 | ||
4275 | add_setshow_boolean_cmd ("may-interrupt", class_support, | |
4276 | &may_stop_1, _("\ | |
4277 | Set permission to interrupt or signal the target."), _("\ | |
4278 | Show permission to interrupt or signal the target."), _("\ | |
4279 | When this permission is on, GDB may interrupt/stop the target's execution.\n\ | |
4280 | Otherwise, any attempt to interrupt or stop will be ignored."), | |
4281 | set_target_permissions, NULL, | |
4282 | &setlist, &showlist); | |
6a3cb8e8 | 4283 | |
78cbbba8 LM |
4284 | add_com ("flash-erase", no_class, flash_erase_command, |
4285 | _("Erase all flash memory regions.")); | |
4286 | ||
6a3cb8e8 PA |
4287 | add_setshow_boolean_cmd ("auto-connect-native-target", class_support, |
4288 | &auto_connect_native_target, _("\ | |
4289 | Set whether GDB may automatically connect to the native target."), _("\ | |
4290 | Show whether GDB may automatically connect to the native target."), _("\ | |
4291 | When on, and GDB is not connected to a target yet, GDB\n\ | |
4292 | attempts \"run\" and other commands with the native target."), | |
4293 | NULL, show_auto_connect_native_target, | |
4294 | &setlist, &showlist); | |
c906108c | 4295 | } |