Commit | Line | Data |
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c906108c | 1 | /* Select target systems and architectures at runtime for GDB. |
7998dfc3 | 2 | |
32d0add0 | 3 | Copyright (C) 1990-2015 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" |
c906108c | 46 | |
a14ed312 | 47 | static void target_info (char *, int); |
c906108c | 48 | |
f0f9ff95 TT |
49 | static void generic_tls_error (void) ATTRIBUTE_NORETURN; |
50 | ||
0a4f40a2 | 51 | static void default_terminal_info (struct target_ops *, const char *, int); |
c906108c | 52 | |
5009afc5 AS |
53 | static int default_watchpoint_addr_within_range (struct target_ops *, |
54 | CORE_ADDR, CORE_ADDR, int); | |
55 | ||
31568a15 TT |
56 | static int default_region_ok_for_hw_watchpoint (struct target_ops *, |
57 | CORE_ADDR, int); | |
e0d24f8d | 58 | |
a30bf1f1 | 59 | static void default_rcmd (struct target_ops *, const char *, struct ui_file *); |
a53f3625 | 60 | |
4229b31d TT |
61 | static ptid_t default_get_ada_task_ptid (struct target_ops *self, |
62 | long lwp, long tid); | |
63 | ||
098dba18 TT |
64 | static int default_follow_fork (struct target_ops *self, int follow_child, |
65 | int detach_fork); | |
66 | ||
8d657035 TT |
67 | static void default_mourn_inferior (struct target_ops *self); |
68 | ||
58a5184e TT |
69 | static int default_search_memory (struct target_ops *ops, |
70 | CORE_ADDR start_addr, | |
71 | ULONGEST search_space_len, | |
72 | const gdb_byte *pattern, | |
73 | ULONGEST pattern_len, | |
74 | CORE_ADDR *found_addrp); | |
75 | ||
936d2992 PA |
76 | static int default_verify_memory (struct target_ops *self, |
77 | const gdb_byte *data, | |
78 | CORE_ADDR memaddr, ULONGEST size); | |
79 | ||
8eaff7cd TT |
80 | static struct address_space *default_thread_address_space |
81 | (struct target_ops *self, ptid_t ptid); | |
82 | ||
c25c4a8b | 83 | static void tcomplain (void) ATTRIBUTE_NORETURN; |
c906108c | 84 | |
555bbdeb TT |
85 | static int return_zero (struct target_ops *); |
86 | ||
87 | static int return_zero_has_execution (struct target_ops *, ptid_t); | |
c906108c | 88 | |
a14ed312 | 89 | static void target_command (char *, int); |
c906108c | 90 | |
a14ed312 | 91 | static struct target_ops *find_default_run_target (char *); |
c906108c | 92 | |
c2250ad1 UW |
93 | static struct gdbarch *default_thread_architecture (struct target_ops *ops, |
94 | ptid_t ptid); | |
95 | ||
0b5a2719 TT |
96 | static int dummy_find_memory_regions (struct target_ops *self, |
97 | find_memory_region_ftype ignore1, | |
98 | void *ignore2); | |
99 | ||
16f796b1 TT |
100 | static char *dummy_make_corefile_notes (struct target_ops *self, |
101 | bfd *ignore1, int *ignore2); | |
102 | ||
770234d3 TT |
103 | static char *default_pid_to_str (struct target_ops *ops, ptid_t ptid); |
104 | ||
fe31bf5b TT |
105 | static enum exec_direction_kind default_execution_direction |
106 | (struct target_ops *self); | |
107 | ||
c0eca49f TT |
108 | static CORE_ADDR default_target_decr_pc_after_break (struct target_ops *ops, |
109 | struct gdbarch *gdbarch); | |
110 | ||
a7068b60 TT |
111 | static struct target_ops debug_target; |
112 | ||
1101cb7b TT |
113 | #include "target-delegates.c" |
114 | ||
a14ed312 | 115 | static void init_dummy_target (void); |
c906108c | 116 | |
3cecbbbe TT |
117 | static void update_current_target (void); |
118 | ||
89a1c21a SM |
119 | /* Vector of existing target structures. */ |
120 | typedef struct target_ops *target_ops_p; | |
121 | DEF_VEC_P (target_ops_p); | |
122 | static VEC (target_ops_p) *target_structs; | |
c906108c SS |
123 | |
124 | /* The initial current target, so that there is always a semi-valid | |
125 | current target. */ | |
126 | ||
127 | static struct target_ops dummy_target; | |
128 | ||
129 | /* Top of target stack. */ | |
130 | ||
258b763a | 131 | static struct target_ops *target_stack; |
c906108c SS |
132 | |
133 | /* The target structure we are currently using to talk to a process | |
134 | or file or whatever "inferior" we have. */ | |
135 | ||
136 | struct target_ops current_target; | |
137 | ||
138 | /* Command list for target. */ | |
139 | ||
140 | static struct cmd_list_element *targetlist = NULL; | |
141 | ||
cf7a04e8 DJ |
142 | /* Nonzero if we should trust readonly sections from the |
143 | executable when reading memory. */ | |
144 | ||
145 | static int trust_readonly = 0; | |
146 | ||
8defab1a DJ |
147 | /* Nonzero if we should show true memory content including |
148 | memory breakpoint inserted by gdb. */ | |
149 | ||
150 | static int show_memory_breakpoints = 0; | |
151 | ||
d914c394 SS |
152 | /* These globals control whether GDB attempts to perform these |
153 | operations; they are useful for targets that need to prevent | |
154 | inadvertant disruption, such as in non-stop mode. */ | |
155 | ||
156 | int may_write_registers = 1; | |
157 | ||
158 | int may_write_memory = 1; | |
159 | ||
160 | int may_insert_breakpoints = 1; | |
161 | ||
162 | int may_insert_tracepoints = 1; | |
163 | ||
164 | int may_insert_fast_tracepoints = 1; | |
165 | ||
166 | int may_stop = 1; | |
167 | ||
c906108c SS |
168 | /* Non-zero if we want to see trace of target level stuff. */ |
169 | ||
ccce17b0 | 170 | static unsigned int targetdebug = 0; |
3cecbbbe TT |
171 | |
172 | static void | |
173 | set_targetdebug (char *args, int from_tty, struct cmd_list_element *c) | |
174 | { | |
175 | update_current_target (); | |
176 | } | |
177 | ||
920d2a44 AC |
178 | static void |
179 | show_targetdebug (struct ui_file *file, int from_tty, | |
180 | struct cmd_list_element *c, const char *value) | |
181 | { | |
182 | fprintf_filtered (file, _("Target debugging is %s.\n"), value); | |
183 | } | |
c906108c | 184 | |
a14ed312 | 185 | static void setup_target_debug (void); |
c906108c | 186 | |
c906108c SS |
187 | /* The user just typed 'target' without the name of a target. */ |
188 | ||
c906108c | 189 | static void |
fba45db2 | 190 | target_command (char *arg, int from_tty) |
c906108c SS |
191 | { |
192 | fputs_filtered ("Argument required (target name). Try `help target'\n", | |
193 | gdb_stdout); | |
194 | } | |
195 | ||
c35b1492 PA |
196 | /* Default target_has_* methods for process_stratum targets. */ |
197 | ||
198 | int | |
199 | default_child_has_all_memory (struct target_ops *ops) | |
200 | { | |
201 | /* If no inferior selected, then we can't read memory here. */ | |
202 | if (ptid_equal (inferior_ptid, null_ptid)) | |
203 | return 0; | |
204 | ||
205 | return 1; | |
206 | } | |
207 | ||
208 | int | |
209 | default_child_has_memory (struct target_ops *ops) | |
210 | { | |
211 | /* If no inferior selected, then we can't read memory here. */ | |
212 | if (ptid_equal (inferior_ptid, null_ptid)) | |
213 | return 0; | |
214 | ||
215 | return 1; | |
216 | } | |
217 | ||
218 | int | |
219 | default_child_has_stack (struct target_ops *ops) | |
220 | { | |
221 | /* If no inferior selected, there's no stack. */ | |
222 | if (ptid_equal (inferior_ptid, null_ptid)) | |
223 | return 0; | |
224 | ||
225 | return 1; | |
226 | } | |
227 | ||
228 | int | |
229 | default_child_has_registers (struct target_ops *ops) | |
230 | { | |
231 | /* Can't read registers from no inferior. */ | |
232 | if (ptid_equal (inferior_ptid, null_ptid)) | |
233 | return 0; | |
234 | ||
235 | return 1; | |
236 | } | |
237 | ||
238 | int | |
aeaec162 | 239 | default_child_has_execution (struct target_ops *ops, ptid_t the_ptid) |
c35b1492 PA |
240 | { |
241 | /* If there's no thread selected, then we can't make it run through | |
242 | hoops. */ | |
aeaec162 | 243 | if (ptid_equal (the_ptid, null_ptid)) |
c35b1492 PA |
244 | return 0; |
245 | ||
246 | return 1; | |
247 | } | |
248 | ||
249 | ||
250 | int | |
251 | target_has_all_memory_1 (void) | |
252 | { | |
253 | struct target_ops *t; | |
254 | ||
255 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
256 | if (t->to_has_all_memory (t)) | |
257 | return 1; | |
258 | ||
259 | return 0; | |
260 | } | |
261 | ||
262 | int | |
263 | target_has_memory_1 (void) | |
264 | { | |
265 | struct target_ops *t; | |
266 | ||
267 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
268 | if (t->to_has_memory (t)) | |
269 | return 1; | |
270 | ||
271 | return 0; | |
272 | } | |
273 | ||
274 | int | |
275 | target_has_stack_1 (void) | |
276 | { | |
277 | struct target_ops *t; | |
278 | ||
279 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
280 | if (t->to_has_stack (t)) | |
281 | return 1; | |
282 | ||
283 | return 0; | |
284 | } | |
285 | ||
286 | int | |
287 | target_has_registers_1 (void) | |
288 | { | |
289 | struct target_ops *t; | |
290 | ||
291 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
292 | if (t->to_has_registers (t)) | |
293 | return 1; | |
294 | ||
295 | return 0; | |
296 | } | |
297 | ||
298 | int | |
aeaec162 | 299 | target_has_execution_1 (ptid_t the_ptid) |
c35b1492 PA |
300 | { |
301 | struct target_ops *t; | |
302 | ||
303 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
aeaec162 | 304 | if (t->to_has_execution (t, the_ptid)) |
c35b1492 PA |
305 | return 1; |
306 | ||
307 | return 0; | |
308 | } | |
309 | ||
aeaec162 TT |
310 | int |
311 | target_has_execution_current (void) | |
312 | { | |
313 | return target_has_execution_1 (inferior_ptid); | |
314 | } | |
315 | ||
c22a2b88 TT |
316 | /* Complete initialization of T. This ensures that various fields in |
317 | T are set, if needed by the target implementation. */ | |
c906108c SS |
318 | |
319 | void | |
c22a2b88 | 320 | complete_target_initialization (struct target_ops *t) |
c906108c | 321 | { |
0088c768 | 322 | /* Provide default values for all "must have" methods. */ |
0088c768 | 323 | |
c35b1492 | 324 | if (t->to_has_all_memory == NULL) |
555bbdeb | 325 | t->to_has_all_memory = return_zero; |
c35b1492 PA |
326 | |
327 | if (t->to_has_memory == NULL) | |
555bbdeb | 328 | t->to_has_memory = return_zero; |
c35b1492 PA |
329 | |
330 | if (t->to_has_stack == NULL) | |
555bbdeb | 331 | t->to_has_stack = return_zero; |
c35b1492 PA |
332 | |
333 | if (t->to_has_registers == NULL) | |
555bbdeb | 334 | t->to_has_registers = return_zero; |
c35b1492 PA |
335 | |
336 | if (t->to_has_execution == NULL) | |
555bbdeb | 337 | t->to_has_execution = return_zero_has_execution; |
1101cb7b | 338 | |
b3ccfe11 TT |
339 | /* These methods can be called on an unpushed target and so require |
340 | a default implementation if the target might plausibly be the | |
341 | default run target. */ | |
342 | gdb_assert (t->to_can_run == NULL || (t->to_can_async_p != NULL | |
343 | && t->to_supports_non_stop != NULL)); | |
344 | ||
1101cb7b | 345 | install_delegators (t); |
c22a2b88 TT |
346 | } |
347 | ||
8981c758 TT |
348 | /* This is used to implement the various target commands. */ |
349 | ||
350 | static void | |
351 | open_target (char *args, int from_tty, struct cmd_list_element *command) | |
352 | { | |
353 | struct target_ops *ops = get_cmd_context (command); | |
354 | ||
355 | if (targetdebug) | |
356 | fprintf_unfiltered (gdb_stdlog, "-> %s->to_open (...)\n", | |
357 | ops->to_shortname); | |
358 | ||
359 | ops->to_open (args, from_tty); | |
360 | ||
361 | if (targetdebug) | |
362 | fprintf_unfiltered (gdb_stdlog, "<- %s->to_open (%s, %d)\n", | |
363 | ops->to_shortname, args, from_tty); | |
364 | } | |
365 | ||
c22a2b88 TT |
366 | /* Add possible target architecture T to the list and add a new |
367 | command 'target T->to_shortname'. Set COMPLETER as the command's | |
368 | completer if not NULL. */ | |
369 | ||
370 | void | |
371 | add_target_with_completer (struct target_ops *t, | |
372 | completer_ftype *completer) | |
373 | { | |
374 | struct cmd_list_element *c; | |
375 | ||
376 | complete_target_initialization (t); | |
c35b1492 | 377 | |
89a1c21a | 378 | VEC_safe_push (target_ops_p, target_structs, t); |
c906108c SS |
379 | |
380 | if (targetlist == NULL) | |
1bedd215 AC |
381 | add_prefix_cmd ("target", class_run, target_command, _("\ |
382 | Connect to a target machine or process.\n\ | |
c906108c SS |
383 | The first argument is the type or protocol of the target machine.\n\ |
384 | Remaining arguments are interpreted by the target protocol. For more\n\ | |
385 | information on the arguments for a particular protocol, type\n\ | |
1bedd215 | 386 | `help target ' followed by the protocol name."), |
c906108c | 387 | &targetlist, "target ", 0, &cmdlist); |
8981c758 TT |
388 | c = add_cmd (t->to_shortname, no_class, NULL, t->to_doc, &targetlist); |
389 | set_cmd_sfunc (c, open_target); | |
390 | set_cmd_context (c, t); | |
9852c492 YQ |
391 | if (completer != NULL) |
392 | set_cmd_completer (c, completer); | |
393 | } | |
394 | ||
395 | /* Add a possible target architecture to the list. */ | |
396 | ||
397 | void | |
398 | add_target (struct target_ops *t) | |
399 | { | |
400 | add_target_with_completer (t, NULL); | |
c906108c SS |
401 | } |
402 | ||
b48d48eb MM |
403 | /* See target.h. */ |
404 | ||
405 | void | |
406 | add_deprecated_target_alias (struct target_ops *t, char *alias) | |
407 | { | |
408 | struct cmd_list_element *c; | |
409 | char *alt; | |
410 | ||
411 | /* If we use add_alias_cmd, here, we do not get the deprecated warning, | |
412 | see PR cli/15104. */ | |
8981c758 TT |
413 | c = add_cmd (alias, no_class, NULL, t->to_doc, &targetlist); |
414 | set_cmd_sfunc (c, open_target); | |
415 | set_cmd_context (c, t); | |
b48d48eb MM |
416 | alt = xstrprintf ("target %s", t->to_shortname); |
417 | deprecate_cmd (c, alt); | |
418 | } | |
419 | ||
c906108c SS |
420 | /* Stub functions */ |
421 | ||
7d85a9c0 JB |
422 | void |
423 | target_kill (void) | |
424 | { | |
423a4807 | 425 | current_target.to_kill (¤t_target); |
7d85a9c0 JB |
426 | } |
427 | ||
11cf8741 | 428 | void |
9cbe5fff | 429 | target_load (const char *arg, int from_tty) |
11cf8741 | 430 | { |
4e5d721f | 431 | target_dcache_invalidate (); |
71a9f134 | 432 | (*current_target.to_load) (¤t_target, arg, from_tty); |
11cf8741 JM |
433 | } |
434 | ||
5842f62a PA |
435 | /* Possible terminal states. */ |
436 | ||
437 | enum terminal_state | |
438 | { | |
439 | /* The inferior's terminal settings are in effect. */ | |
440 | terminal_is_inferior = 0, | |
441 | ||
442 | /* Some of our terminal settings are in effect, enough to get | |
443 | proper output. */ | |
444 | terminal_is_ours_for_output = 1, | |
445 | ||
446 | /* Our terminal settings are in effect, for output and input. */ | |
447 | terminal_is_ours = 2 | |
448 | }; | |
449 | ||
450 | static enum terminal_state terminal_state; | |
451 | ||
452 | /* See target.h. */ | |
453 | ||
454 | void | |
455 | target_terminal_init (void) | |
456 | { | |
457 | (*current_target.to_terminal_init) (¤t_target); | |
458 | ||
459 | terminal_state = terminal_is_ours; | |
460 | } | |
461 | ||
462 | /* See target.h. */ | |
463 | ||
6fdebc3d PA |
464 | int |
465 | target_terminal_is_inferior (void) | |
466 | { | |
467 | return (terminal_state == terminal_is_inferior); | |
468 | } | |
469 | ||
470 | /* See target.h. */ | |
471 | ||
d9d2d8b6 PA |
472 | void |
473 | target_terminal_inferior (void) | |
474 | { | |
475 | /* A background resume (``run&'') should leave GDB in control of the | |
c378eb4e | 476 | terminal. Use target_can_async_p, not target_is_async_p, since at |
ba7f6c64 VP |
477 | this point the target is not async yet. However, if sync_execution |
478 | is not set, we know it will become async prior to resume. */ | |
479 | if (target_can_async_p () && !sync_execution) | |
d9d2d8b6 PA |
480 | return; |
481 | ||
5842f62a PA |
482 | if (terminal_state == terminal_is_inferior) |
483 | return; | |
484 | ||
d9d2d8b6 PA |
485 | /* If GDB is resuming the inferior in the foreground, install |
486 | inferior's terminal modes. */ | |
d2f640d4 | 487 | (*current_target.to_terminal_inferior) (¤t_target); |
5842f62a PA |
488 | terminal_state = terminal_is_inferior; |
489 | } | |
490 | ||
491 | /* See target.h. */ | |
492 | ||
493 | void | |
494 | target_terminal_ours (void) | |
495 | { | |
496 | if (terminal_state == terminal_is_ours) | |
497 | return; | |
498 | ||
499 | (*current_target.to_terminal_ours) (¤t_target); | |
500 | terminal_state = terminal_is_ours; | |
501 | } | |
502 | ||
503 | /* See target.h. */ | |
504 | ||
505 | void | |
506 | target_terminal_ours_for_output (void) | |
507 | { | |
508 | if (terminal_state != terminal_is_inferior) | |
509 | return; | |
510 | (*current_target.to_terminal_ours_for_output) (¤t_target); | |
511 | terminal_state = terminal_is_ours_for_output; | |
d9d2d8b6 | 512 | } |
136d6dae | 513 | |
b0ed115f TT |
514 | /* See target.h. */ |
515 | ||
516 | int | |
517 | target_supports_terminal_ours (void) | |
518 | { | |
519 | struct target_ops *t; | |
520 | ||
521 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
522 | { | |
523 | if (t->to_terminal_ours != delegate_terminal_ours | |
524 | && t->to_terminal_ours != tdefault_terminal_ours) | |
525 | return 1; | |
526 | } | |
527 | ||
528 | return 0; | |
529 | } | |
530 | ||
1abf3a14 SM |
531 | /* Restore the terminal to its previous state (helper for |
532 | make_cleanup_restore_target_terminal). */ | |
533 | ||
534 | static void | |
535 | cleanup_restore_target_terminal (void *arg) | |
536 | { | |
537 | enum terminal_state *previous_state = arg; | |
538 | ||
539 | switch (*previous_state) | |
540 | { | |
541 | case terminal_is_ours: | |
542 | target_terminal_ours (); | |
543 | break; | |
544 | case terminal_is_ours_for_output: | |
545 | target_terminal_ours_for_output (); | |
546 | break; | |
547 | case terminal_is_inferior: | |
548 | target_terminal_inferior (); | |
549 | break; | |
550 | } | |
551 | } | |
552 | ||
553 | /* See target.h. */ | |
554 | ||
555 | struct cleanup * | |
556 | make_cleanup_restore_target_terminal (void) | |
557 | { | |
558 | enum terminal_state *ts = xmalloc (sizeof (*ts)); | |
559 | ||
560 | *ts = terminal_state; | |
561 | ||
562 | return make_cleanup_dtor (cleanup_restore_target_terminal, ts, xfree); | |
563 | } | |
564 | ||
c906108c | 565 | static void |
fba45db2 | 566 | tcomplain (void) |
c906108c | 567 | { |
8a3fe4f8 | 568 | error (_("You can't do that when your target is `%s'"), |
c906108c SS |
569 | current_target.to_shortname); |
570 | } | |
571 | ||
572 | void | |
fba45db2 | 573 | noprocess (void) |
c906108c | 574 | { |
8a3fe4f8 | 575 | error (_("You can't do that without a process to debug.")); |
c906108c SS |
576 | } |
577 | ||
c906108c | 578 | static void |
0a4f40a2 | 579 | default_terminal_info (struct target_ops *self, const char *args, int from_tty) |
c906108c | 580 | { |
a3f17187 | 581 | printf_unfiltered (_("No saved terminal information.\n")); |
c906108c SS |
582 | } |
583 | ||
0ef643c8 JB |
584 | /* A default implementation for the to_get_ada_task_ptid target method. |
585 | ||
586 | This function builds the PTID by using both LWP and TID as part of | |
587 | the PTID lwp and tid elements. The pid used is the pid of the | |
588 | inferior_ptid. */ | |
589 | ||
2c0b251b | 590 | static ptid_t |
1e6b91a4 | 591 | default_get_ada_task_ptid (struct target_ops *self, long lwp, long tid) |
0ef643c8 JB |
592 | { |
593 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid); | |
594 | } | |
595 | ||
32231432 | 596 | static enum exec_direction_kind |
4c612759 | 597 | default_execution_direction (struct target_ops *self) |
32231432 PA |
598 | { |
599 | if (!target_can_execute_reverse) | |
600 | return EXEC_FORWARD; | |
601 | else if (!target_can_async_p ()) | |
602 | return EXEC_FORWARD; | |
603 | else | |
604 | gdb_assert_not_reached ("\ | |
605 | to_execution_direction must be implemented for reverse async"); | |
606 | } | |
607 | ||
7998dfc3 AC |
608 | /* Go through the target stack from top to bottom, copying over zero |
609 | entries in current_target, then filling in still empty entries. In | |
610 | effect, we are doing class inheritance through the pushed target | |
611 | vectors. | |
612 | ||
613 | NOTE: cagney/2003-10-17: The problem with this inheritance, as it | |
614 | is currently implemented, is that it discards any knowledge of | |
615 | which target an inherited method originally belonged to. | |
616 | Consequently, new new target methods should instead explicitly and | |
617 | locally search the target stack for the target that can handle the | |
618 | request. */ | |
c906108c SS |
619 | |
620 | static void | |
7998dfc3 | 621 | update_current_target (void) |
c906108c | 622 | { |
7998dfc3 AC |
623 | struct target_ops *t; |
624 | ||
08d8bcd7 | 625 | /* First, reset current's contents. */ |
7998dfc3 AC |
626 | memset (¤t_target, 0, sizeof (current_target)); |
627 | ||
1101cb7b TT |
628 | /* Install the delegators. */ |
629 | install_delegators (¤t_target); | |
630 | ||
be4ddd36 TT |
631 | current_target.to_stratum = target_stack->to_stratum; |
632 | ||
7998dfc3 AC |
633 | #define INHERIT(FIELD, TARGET) \ |
634 | if (!current_target.FIELD) \ | |
635 | current_target.FIELD = (TARGET)->FIELD | |
636 | ||
be4ddd36 TT |
637 | /* Do not add any new INHERITs here. Instead, use the delegation |
638 | mechanism provided by make-target-delegates. */ | |
7998dfc3 AC |
639 | for (t = target_stack; t; t = t->beneath) |
640 | { | |
641 | INHERIT (to_shortname, t); | |
642 | INHERIT (to_longname, t); | |
dc177b7a | 643 | INHERIT (to_attach_no_wait, t); |
74174d2e | 644 | INHERIT (to_have_steppable_watchpoint, t); |
7998dfc3 | 645 | INHERIT (to_have_continuable_watchpoint, t); |
7998dfc3 | 646 | INHERIT (to_has_thread_control, t); |
7998dfc3 AC |
647 | } |
648 | #undef INHERIT | |
649 | ||
7998dfc3 AC |
650 | /* Finally, position the target-stack beneath the squashed |
651 | "current_target". That way code looking for a non-inherited | |
652 | target method can quickly and simply find it. */ | |
653 | current_target.beneath = target_stack; | |
b4b61fdb DJ |
654 | |
655 | if (targetdebug) | |
656 | setup_target_debug (); | |
c906108c SS |
657 | } |
658 | ||
659 | /* Push a new target type into the stack of the existing target accessors, | |
660 | possibly superseding some of the existing accessors. | |
661 | ||
c906108c SS |
662 | Rather than allow an empty stack, we always have the dummy target at |
663 | the bottom stratum, so we can call the function vectors without | |
664 | checking them. */ | |
665 | ||
b26a4dcb | 666 | void |
fba45db2 | 667 | push_target (struct target_ops *t) |
c906108c | 668 | { |
258b763a | 669 | struct target_ops **cur; |
c906108c SS |
670 | |
671 | /* Check magic number. If wrong, it probably means someone changed | |
672 | the struct definition, but not all the places that initialize one. */ | |
673 | if (t->to_magic != OPS_MAGIC) | |
674 | { | |
c5aa993b JM |
675 | fprintf_unfiltered (gdb_stderr, |
676 | "Magic number of %s target struct wrong\n", | |
677 | t->to_shortname); | |
3e43a32a MS |
678 | internal_error (__FILE__, __LINE__, |
679 | _("failed internal consistency check")); | |
c906108c SS |
680 | } |
681 | ||
258b763a AC |
682 | /* Find the proper stratum to install this target in. */ |
683 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
c906108c | 684 | { |
258b763a | 685 | if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum) |
c906108c SS |
686 | break; |
687 | } | |
688 | ||
258b763a | 689 | /* If there's already targets at this stratum, remove them. */ |
88c231eb | 690 | /* FIXME: cagney/2003-10-15: I think this should be popping all |
258b763a AC |
691 | targets to CUR, and not just those at this stratum level. */ |
692 | while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum) | |
693 | { | |
694 | /* There's already something at this stratum level. Close it, | |
695 | and un-hook it from the stack. */ | |
696 | struct target_ops *tmp = (*cur); | |
5d502164 | 697 | |
258b763a AC |
698 | (*cur) = (*cur)->beneath; |
699 | tmp->beneath = NULL; | |
460014f5 | 700 | target_close (tmp); |
258b763a | 701 | } |
c906108c SS |
702 | |
703 | /* We have removed all targets in our stratum, now add the new one. */ | |
258b763a AC |
704 | t->beneath = (*cur); |
705 | (*cur) = t; | |
c906108c SS |
706 | |
707 | update_current_target (); | |
c906108c SS |
708 | } |
709 | ||
2bc416ba | 710 | /* Remove a target_ops vector from the stack, wherever it may be. |
c906108c SS |
711 | Return how many times it was removed (0 or 1). */ |
712 | ||
713 | int | |
fba45db2 | 714 | unpush_target (struct target_ops *t) |
c906108c | 715 | { |
258b763a AC |
716 | struct target_ops **cur; |
717 | struct target_ops *tmp; | |
c906108c | 718 | |
c8d104ad PA |
719 | if (t->to_stratum == dummy_stratum) |
720 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 721 | _("Attempt to unpush the dummy target")); |
c8d104ad | 722 | |
c906108c | 723 | /* Look for the specified target. Note that we assume that a target |
c378eb4e | 724 | can only occur once in the target stack. */ |
c906108c | 725 | |
258b763a AC |
726 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) |
727 | { | |
728 | if ((*cur) == t) | |
729 | break; | |
730 | } | |
c906108c | 731 | |
305436e0 PA |
732 | /* If we don't find target_ops, quit. Only open targets should be |
733 | closed. */ | |
258b763a | 734 | if ((*cur) == NULL) |
305436e0 | 735 | return 0; |
5269965e | 736 | |
c378eb4e | 737 | /* Unchain the target. */ |
258b763a AC |
738 | tmp = (*cur); |
739 | (*cur) = (*cur)->beneath; | |
740 | tmp->beneath = NULL; | |
c906108c SS |
741 | |
742 | update_current_target (); | |
c906108c | 743 | |
305436e0 PA |
744 | /* Finally close the target. Note we do this after unchaining, so |
745 | any target method calls from within the target_close | |
746 | implementation don't end up in T anymore. */ | |
460014f5 | 747 | target_close (t); |
305436e0 | 748 | |
c906108c SS |
749 | return 1; |
750 | } | |
751 | ||
aa76d38d | 752 | void |
460014f5 | 753 | pop_all_targets_above (enum strata above_stratum) |
aa76d38d | 754 | { |
87ab71f0 | 755 | while ((int) (current_target.to_stratum) > (int) above_stratum) |
aa76d38d | 756 | { |
aa76d38d PA |
757 | if (!unpush_target (target_stack)) |
758 | { | |
759 | fprintf_unfiltered (gdb_stderr, | |
760 | "pop_all_targets couldn't find target %s\n", | |
b52323fa | 761 | target_stack->to_shortname); |
aa76d38d PA |
762 | internal_error (__FILE__, __LINE__, |
763 | _("failed internal consistency check")); | |
764 | break; | |
765 | } | |
766 | } | |
767 | } | |
768 | ||
87ab71f0 | 769 | void |
460014f5 | 770 | pop_all_targets (void) |
87ab71f0 | 771 | { |
460014f5 | 772 | pop_all_targets_above (dummy_stratum); |
87ab71f0 PA |
773 | } |
774 | ||
c0edd9ed JK |
775 | /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */ |
776 | ||
777 | int | |
778 | target_is_pushed (struct target_ops *t) | |
779 | { | |
84202f9c | 780 | struct target_ops *cur; |
c0edd9ed JK |
781 | |
782 | /* Check magic number. If wrong, it probably means someone changed | |
783 | the struct definition, but not all the places that initialize one. */ | |
784 | if (t->to_magic != OPS_MAGIC) | |
785 | { | |
786 | fprintf_unfiltered (gdb_stderr, | |
787 | "Magic number of %s target struct wrong\n", | |
788 | t->to_shortname); | |
3e43a32a MS |
789 | internal_error (__FILE__, __LINE__, |
790 | _("failed internal consistency check")); | |
c0edd9ed JK |
791 | } |
792 | ||
84202f9c TT |
793 | for (cur = target_stack; cur != NULL; cur = cur->beneath) |
794 | if (cur == t) | |
c0edd9ed JK |
795 | return 1; |
796 | ||
797 | return 0; | |
798 | } | |
799 | ||
f0f9ff95 TT |
800 | /* Default implementation of to_get_thread_local_address. */ |
801 | ||
802 | static void | |
803 | generic_tls_error (void) | |
804 | { | |
805 | throw_error (TLS_GENERIC_ERROR, | |
806 | _("Cannot find thread-local variables on this target")); | |
807 | } | |
808 | ||
72f5cf0e | 809 | /* Using the objfile specified in OBJFILE, find the address for the |
9e35dae4 DJ |
810 | current thread's thread-local storage with offset OFFSET. */ |
811 | CORE_ADDR | |
812 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) | |
813 | { | |
814 | volatile CORE_ADDR addr = 0; | |
f0f9ff95 | 815 | struct target_ops *target = ¤t_target; |
9e35dae4 | 816 | |
f0f9ff95 | 817 | if (gdbarch_fetch_tls_load_module_address_p (target_gdbarch ())) |
9e35dae4 DJ |
818 | { |
819 | ptid_t ptid = inferior_ptid; | |
820 | volatile struct gdb_exception ex; | |
821 | ||
822 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
823 | { | |
824 | CORE_ADDR lm_addr; | |
825 | ||
826 | /* Fetch the load module address for this objfile. */ | |
f5656ead | 827 | lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch (), |
9e35dae4 | 828 | objfile); |
9e35dae4 | 829 | |
3e43a32a MS |
830 | addr = target->to_get_thread_local_address (target, ptid, |
831 | lm_addr, offset); | |
9e35dae4 DJ |
832 | } |
833 | /* If an error occurred, print TLS related messages here. Otherwise, | |
834 | throw the error to some higher catcher. */ | |
835 | if (ex.reason < 0) | |
836 | { | |
837 | int objfile_is_library = (objfile->flags & OBJF_SHARED); | |
838 | ||
839 | switch (ex.error) | |
840 | { | |
841 | case TLS_NO_LIBRARY_SUPPORT_ERROR: | |
3e43a32a MS |
842 | error (_("Cannot find thread-local variables " |
843 | "in this thread library.")); | |
9e35dae4 DJ |
844 | break; |
845 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: | |
846 | if (objfile_is_library) | |
847 | error (_("Cannot find shared library `%s' in dynamic" | |
4262abfb | 848 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
849 | else |
850 | error (_("Cannot find executable file `%s' in dynamic" | |
4262abfb | 851 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
852 | break; |
853 | case TLS_NOT_ALLOCATED_YET_ERROR: | |
854 | if (objfile_is_library) | |
855 | error (_("The inferior has not yet allocated storage for" | |
856 | " thread-local variables in\n" | |
857 | "the shared library `%s'\n" | |
858 | "for %s"), | |
4262abfb | 859 | objfile_name (objfile), target_pid_to_str (ptid)); |
9e35dae4 DJ |
860 | else |
861 | error (_("The inferior has not yet allocated storage for" | |
862 | " thread-local variables in\n" | |
863 | "the executable `%s'\n" | |
864 | "for %s"), | |
4262abfb | 865 | objfile_name (objfile), target_pid_to_str (ptid)); |
9e35dae4 DJ |
866 | break; |
867 | case TLS_GENERIC_ERROR: | |
868 | if (objfile_is_library) | |
869 | error (_("Cannot find thread-local storage for %s, " | |
870 | "shared library %s:\n%s"), | |
871 | target_pid_to_str (ptid), | |
4262abfb | 872 | objfile_name (objfile), ex.message); |
9e35dae4 DJ |
873 | else |
874 | error (_("Cannot find thread-local storage for %s, " | |
875 | "executable file %s:\n%s"), | |
876 | target_pid_to_str (ptid), | |
4262abfb | 877 | objfile_name (objfile), ex.message); |
9e35dae4 DJ |
878 | break; |
879 | default: | |
880 | throw_exception (ex); | |
881 | break; | |
882 | } | |
883 | } | |
884 | } | |
885 | /* It wouldn't be wrong here to try a gdbarch method, too; finding | |
886 | TLS is an ABI-specific thing. But we don't do that yet. */ | |
887 | else | |
888 | error (_("Cannot find thread-local variables on this target")); | |
889 | ||
890 | return addr; | |
891 | } | |
892 | ||
6be7b56e | 893 | const char * |
01cb8804 | 894 | target_xfer_status_to_string (enum target_xfer_status status) |
6be7b56e PA |
895 | { |
896 | #define CASE(X) case X: return #X | |
01cb8804 | 897 | switch (status) |
6be7b56e PA |
898 | { |
899 | CASE(TARGET_XFER_E_IO); | |
bc113b4e | 900 | CASE(TARGET_XFER_UNAVAILABLE); |
6be7b56e PA |
901 | default: |
902 | return "<unknown>"; | |
903 | } | |
904 | #undef CASE | |
905 | }; | |
906 | ||
907 | ||
c906108c SS |
908 | #undef MIN |
909 | #define MIN(A, B) (((A) <= (B)) ? (A) : (B)) | |
910 | ||
911 | /* target_read_string -- read a null terminated string, up to LEN bytes, | |
912 | from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful. | |
913 | Set *STRING to a pointer to malloc'd memory containing the data; the caller | |
914 | is responsible for freeing it. Return the number of bytes successfully | |
915 | read. */ | |
916 | ||
917 | int | |
fba45db2 | 918 | target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop) |
c906108c | 919 | { |
c2e8b827 | 920 | int tlen, offset, i; |
1b0ba102 | 921 | gdb_byte buf[4]; |
c906108c SS |
922 | int errcode = 0; |
923 | char *buffer; | |
924 | int buffer_allocated; | |
925 | char *bufptr; | |
926 | unsigned int nbytes_read = 0; | |
927 | ||
6217bf3e MS |
928 | gdb_assert (string); |
929 | ||
c906108c SS |
930 | /* Small for testing. */ |
931 | buffer_allocated = 4; | |
932 | buffer = xmalloc (buffer_allocated); | |
933 | bufptr = buffer; | |
934 | ||
c906108c SS |
935 | while (len > 0) |
936 | { | |
937 | tlen = MIN (len, 4 - (memaddr & 3)); | |
938 | offset = memaddr & 3; | |
939 | ||
1b0ba102 | 940 | errcode = target_read_memory (memaddr & ~3, buf, sizeof buf); |
c906108c SS |
941 | if (errcode != 0) |
942 | { | |
943 | /* The transfer request might have crossed the boundary to an | |
c378eb4e | 944 | unallocated region of memory. Retry the transfer, requesting |
c906108c SS |
945 | a single byte. */ |
946 | tlen = 1; | |
947 | offset = 0; | |
b8eb5af0 | 948 | errcode = target_read_memory (memaddr, buf, 1); |
c906108c SS |
949 | if (errcode != 0) |
950 | goto done; | |
951 | } | |
952 | ||
953 | if (bufptr - buffer + tlen > buffer_allocated) | |
954 | { | |
955 | unsigned int bytes; | |
5d502164 | 956 | |
c906108c SS |
957 | bytes = bufptr - buffer; |
958 | buffer_allocated *= 2; | |
959 | buffer = xrealloc (buffer, buffer_allocated); | |
960 | bufptr = buffer + bytes; | |
961 | } | |
962 | ||
963 | for (i = 0; i < tlen; i++) | |
964 | { | |
965 | *bufptr++ = buf[i + offset]; | |
966 | if (buf[i + offset] == '\000') | |
967 | { | |
968 | nbytes_read += i + 1; | |
969 | goto done; | |
970 | } | |
971 | } | |
972 | ||
973 | memaddr += tlen; | |
974 | len -= tlen; | |
975 | nbytes_read += tlen; | |
976 | } | |
c5aa993b | 977 | done: |
6217bf3e | 978 | *string = buffer; |
c906108c SS |
979 | if (errnop != NULL) |
980 | *errnop = errcode; | |
c906108c SS |
981 | return nbytes_read; |
982 | } | |
983 | ||
07b82ea5 PA |
984 | struct target_section_table * |
985 | target_get_section_table (struct target_ops *target) | |
986 | { | |
7e35c012 | 987 | return (*target->to_get_section_table) (target); |
07b82ea5 PA |
988 | } |
989 | ||
8db32d44 | 990 | /* Find a section containing ADDR. */ |
07b82ea5 | 991 | |
0542c86d | 992 | struct target_section * |
8db32d44 AC |
993 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
994 | { | |
07b82ea5 | 995 | struct target_section_table *table = target_get_section_table (target); |
0542c86d | 996 | struct target_section *secp; |
07b82ea5 PA |
997 | |
998 | if (table == NULL) | |
999 | return NULL; | |
1000 | ||
1001 | for (secp = table->sections; secp < table->sections_end; secp++) | |
8db32d44 AC |
1002 | { |
1003 | if (addr >= secp->addr && addr < secp->endaddr) | |
1004 | return secp; | |
1005 | } | |
1006 | return NULL; | |
1007 | } | |
1008 | ||
0fec99e8 PA |
1009 | |
1010 | /* Helper for the memory xfer routines. Checks the attributes of the | |
1011 | memory region of MEMADDR against the read or write being attempted. | |
1012 | If the access is permitted returns true, otherwise returns false. | |
1013 | REGION_P is an optional output parameter. If not-NULL, it is | |
1014 | filled with a pointer to the memory region of MEMADDR. REG_LEN | |
1015 | returns LEN trimmed to the end of the region. This is how much the | |
1016 | caller can continue requesting, if the access is permitted. A | |
1017 | single xfer request must not straddle memory region boundaries. */ | |
1018 | ||
1019 | static int | |
1020 | memory_xfer_check_region (gdb_byte *readbuf, const gdb_byte *writebuf, | |
1021 | ULONGEST memaddr, ULONGEST len, ULONGEST *reg_len, | |
1022 | struct mem_region **region_p) | |
1023 | { | |
1024 | struct mem_region *region; | |
1025 | ||
1026 | region = lookup_mem_region (memaddr); | |
1027 | ||
1028 | if (region_p != NULL) | |
1029 | *region_p = region; | |
1030 | ||
1031 | switch (region->attrib.mode) | |
1032 | { | |
1033 | case MEM_RO: | |
1034 | if (writebuf != NULL) | |
1035 | return 0; | |
1036 | break; | |
1037 | ||
1038 | case MEM_WO: | |
1039 | if (readbuf != NULL) | |
1040 | return 0; | |
1041 | break; | |
1042 | ||
1043 | case MEM_FLASH: | |
1044 | /* We only support writing to flash during "load" for now. */ | |
1045 | if (writebuf != NULL) | |
1046 | error (_("Writing to flash memory forbidden in this context")); | |
1047 | break; | |
1048 | ||
1049 | case MEM_NONE: | |
1050 | return 0; | |
1051 | } | |
1052 | ||
1053 | /* region->hi == 0 means there's no upper bound. */ | |
1054 | if (memaddr + len < region->hi || region->hi == 0) | |
1055 | *reg_len = len; | |
1056 | else | |
1057 | *reg_len = region->hi - memaddr; | |
1058 | ||
1059 | return 1; | |
1060 | } | |
1061 | ||
9f713294 YQ |
1062 | /* Read memory from more than one valid target. A core file, for |
1063 | instance, could have some of memory but delegate other bits to | |
1064 | the target below it. So, we must manually try all targets. */ | |
1065 | ||
9b409511 | 1066 | static enum target_xfer_status |
17fde6d0 | 1067 | raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf, |
9b409511 YQ |
1068 | const gdb_byte *writebuf, ULONGEST memaddr, LONGEST len, |
1069 | ULONGEST *xfered_len) | |
9f713294 | 1070 | { |
9b409511 | 1071 | enum target_xfer_status res; |
9f713294 YQ |
1072 | |
1073 | do | |
1074 | { | |
1075 | res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 YQ |
1076 | readbuf, writebuf, memaddr, len, |
1077 | xfered_len); | |
1078 | if (res == TARGET_XFER_OK) | |
9f713294 YQ |
1079 | break; |
1080 | ||
633785ff | 1081 | /* Stop if the target reports that the memory is not available. */ |
bc113b4e | 1082 | if (res == TARGET_XFER_UNAVAILABLE) |
633785ff MM |
1083 | break; |
1084 | ||
9f713294 YQ |
1085 | /* We want to continue past core files to executables, but not |
1086 | past a running target's memory. */ | |
1087 | if (ops->to_has_all_memory (ops)) | |
1088 | break; | |
1089 | ||
1090 | ops = ops->beneath; | |
1091 | } | |
1092 | while (ops != NULL); | |
1093 | ||
0f26cec1 PA |
1094 | /* The cache works at the raw memory level. Make sure the cache |
1095 | gets updated with raw contents no matter what kind of memory | |
1096 | object was originally being written. Note we do write-through | |
1097 | first, so that if it fails, we don't write to the cache contents | |
1098 | that never made it to the target. */ | |
1099 | if (writebuf != NULL | |
1100 | && !ptid_equal (inferior_ptid, null_ptid) | |
1101 | && target_dcache_init_p () | |
1102 | && (stack_cache_enabled_p () || code_cache_enabled_p ())) | |
1103 | { | |
1104 | DCACHE *dcache = target_dcache_get (); | |
1105 | ||
1106 | /* Note that writing to an area of memory which wasn't present | |
1107 | in the cache doesn't cause it to be loaded in. */ | |
1108 | dcache_update (dcache, res, memaddr, writebuf, *xfered_len); | |
1109 | } | |
1110 | ||
9f713294 YQ |
1111 | return res; |
1112 | } | |
1113 | ||
7f79c47e DE |
1114 | /* Perform a partial memory transfer. |
1115 | For docs see target.h, to_xfer_partial. */ | |
cf7a04e8 | 1116 | |
9b409511 | 1117 | static enum target_xfer_status |
f0ba3972 | 1118 | memory_xfer_partial_1 (struct target_ops *ops, enum target_object object, |
17fde6d0 | 1119 | gdb_byte *readbuf, const gdb_byte *writebuf, ULONGEST memaddr, |
9b409511 | 1120 | ULONGEST len, ULONGEST *xfered_len) |
0779438d | 1121 | { |
9b409511 | 1122 | enum target_xfer_status res; |
0fec99e8 | 1123 | ULONGEST reg_len; |
cf7a04e8 | 1124 | struct mem_region *region; |
4e5d721f | 1125 | struct inferior *inf; |
cf7a04e8 | 1126 | |
07b82ea5 PA |
1127 | /* For accesses to unmapped overlay sections, read directly from |
1128 | files. Must do this first, as MEMADDR may need adjustment. */ | |
1129 | if (readbuf != NULL && overlay_debugging) | |
1130 | { | |
1131 | struct obj_section *section = find_pc_overlay (memaddr); | |
5d502164 | 1132 | |
07b82ea5 PA |
1133 | if (pc_in_unmapped_range (memaddr, section)) |
1134 | { | |
1135 | struct target_section_table *table | |
1136 | = target_get_section_table (ops); | |
1137 | const char *section_name = section->the_bfd_section->name; | |
5d502164 | 1138 | |
07b82ea5 PA |
1139 | memaddr = overlay_mapped_address (memaddr, section); |
1140 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 1141 | memaddr, len, xfered_len, |
07b82ea5 PA |
1142 | table->sections, |
1143 | table->sections_end, | |
1144 | section_name); | |
1145 | } | |
1146 | } | |
1147 | ||
1148 | /* Try the executable files, if "trust-readonly-sections" is set. */ | |
cf7a04e8 DJ |
1149 | if (readbuf != NULL && trust_readonly) |
1150 | { | |
0542c86d | 1151 | struct target_section *secp; |
07b82ea5 | 1152 | struct target_section_table *table; |
cf7a04e8 DJ |
1153 | |
1154 | secp = target_section_by_addr (ops, memaddr); | |
1155 | if (secp != NULL | |
2b2848e2 DE |
1156 | && (bfd_get_section_flags (secp->the_bfd_section->owner, |
1157 | secp->the_bfd_section) | |
cf7a04e8 | 1158 | & SEC_READONLY)) |
07b82ea5 PA |
1159 | { |
1160 | table = target_get_section_table (ops); | |
1161 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 1162 | memaddr, len, xfered_len, |
07b82ea5 PA |
1163 | table->sections, |
1164 | table->sections_end, | |
1165 | NULL); | |
1166 | } | |
98646950 UW |
1167 | } |
1168 | ||
cf7a04e8 | 1169 | /* Try GDB's internal data cache. */ |
cf7a04e8 | 1170 | |
0fec99e8 PA |
1171 | if (!memory_xfer_check_region (readbuf, writebuf, memaddr, len, ®_len, |
1172 | ®ion)) | |
1173 | return TARGET_XFER_E_IO; | |
cf7a04e8 | 1174 | |
6c95b8df | 1175 | if (!ptid_equal (inferior_ptid, null_ptid)) |
c9657e70 | 1176 | inf = find_inferior_ptid (inferior_ptid); |
6c95b8df PA |
1177 | else |
1178 | inf = NULL; | |
4e5d721f DE |
1179 | |
1180 | if (inf != NULL | |
0f26cec1 | 1181 | && readbuf != NULL |
2f4d8875 PA |
1182 | /* The dcache reads whole cache lines; that doesn't play well |
1183 | with reading from a trace buffer, because reading outside of | |
1184 | the collected memory range fails. */ | |
1185 | && get_traceframe_number () == -1 | |
4e5d721f | 1186 | && (region->attrib.cache |
29453a14 YQ |
1187 | || (stack_cache_enabled_p () && object == TARGET_OBJECT_STACK_MEMORY) |
1188 | || (code_cache_enabled_p () && object == TARGET_OBJECT_CODE_MEMORY))) | |
cf7a04e8 | 1189 | { |
2a2f9fe4 YQ |
1190 | DCACHE *dcache = target_dcache_get_or_init (); |
1191 | ||
0f26cec1 PA |
1192 | return dcache_read_memory_partial (ops, dcache, memaddr, readbuf, |
1193 | reg_len, xfered_len); | |
cf7a04e8 DJ |
1194 | } |
1195 | ||
1196 | /* If none of those methods found the memory we wanted, fall back | |
1197 | to a target partial transfer. Normally a single call to | |
1198 | to_xfer_partial is enough; if it doesn't recognize an object | |
1199 | it will call the to_xfer_partial of the next target down. | |
1200 | But for memory this won't do. Memory is the only target | |
9b409511 YQ |
1201 | object which can be read from more than one valid target. |
1202 | A core file, for instance, could have some of memory but | |
1203 | delegate other bits to the target below it. So, we must | |
1204 | manually try all targets. */ | |
1205 | ||
1206 | res = raw_memory_xfer_partial (ops, readbuf, writebuf, memaddr, reg_len, | |
1207 | xfered_len); | |
cf7a04e8 DJ |
1208 | |
1209 | /* If we still haven't got anything, return the last error. We | |
1210 | give up. */ | |
1211 | return res; | |
0779438d AC |
1212 | } |
1213 | ||
f0ba3972 PA |
1214 | /* Perform a partial memory transfer. For docs see target.h, |
1215 | to_xfer_partial. */ | |
1216 | ||
9b409511 | 1217 | static enum target_xfer_status |
f0ba3972 | 1218 | memory_xfer_partial (struct target_ops *ops, enum target_object object, |
9b409511 YQ |
1219 | gdb_byte *readbuf, const gdb_byte *writebuf, |
1220 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) | |
f0ba3972 | 1221 | { |
9b409511 | 1222 | enum target_xfer_status res; |
f0ba3972 PA |
1223 | |
1224 | /* Zero length requests are ok and require no work. */ | |
1225 | if (len == 0) | |
9b409511 | 1226 | return TARGET_XFER_EOF; |
f0ba3972 PA |
1227 | |
1228 | /* Fill in READBUF with breakpoint shadows, or WRITEBUF with | |
1229 | breakpoint insns, thus hiding out from higher layers whether | |
1230 | there are software breakpoints inserted in the code stream. */ | |
1231 | if (readbuf != NULL) | |
1232 | { | |
9b409511 YQ |
1233 | res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len, |
1234 | xfered_len); | |
f0ba3972 | 1235 | |
9b409511 | 1236 | if (res == TARGET_XFER_OK && !show_memory_breakpoints) |
c63528fc | 1237 | breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, *xfered_len); |
f0ba3972 PA |
1238 | } |
1239 | else | |
1240 | { | |
1241 | void *buf; | |
1242 | struct cleanup *old_chain; | |
1243 | ||
67c059c2 AB |
1244 | /* A large write request is likely to be partially satisfied |
1245 | by memory_xfer_partial_1. We will continually malloc | |
1246 | and free a copy of the entire write request for breakpoint | |
1247 | shadow handling even though we only end up writing a small | |
1248 | subset of it. Cap writes to 4KB to mitigate this. */ | |
1249 | len = min (4096, len); | |
1250 | ||
f0ba3972 PA |
1251 | buf = xmalloc (len); |
1252 | old_chain = make_cleanup (xfree, buf); | |
1253 | memcpy (buf, writebuf, len); | |
1254 | ||
1255 | breakpoint_xfer_memory (NULL, buf, writebuf, memaddr, len); | |
9b409511 YQ |
1256 | res = memory_xfer_partial_1 (ops, object, NULL, buf, memaddr, len, |
1257 | xfered_len); | |
f0ba3972 PA |
1258 | |
1259 | do_cleanups (old_chain); | |
1260 | } | |
1261 | ||
1262 | return res; | |
1263 | } | |
1264 | ||
8defab1a DJ |
1265 | static void |
1266 | restore_show_memory_breakpoints (void *arg) | |
1267 | { | |
1268 | show_memory_breakpoints = (uintptr_t) arg; | |
1269 | } | |
1270 | ||
1271 | struct cleanup * | |
1272 | make_show_memory_breakpoints_cleanup (int show) | |
1273 | { | |
1274 | int current = show_memory_breakpoints; | |
8defab1a | 1275 | |
5d502164 | 1276 | show_memory_breakpoints = show; |
8defab1a DJ |
1277 | return make_cleanup (restore_show_memory_breakpoints, |
1278 | (void *) (uintptr_t) current); | |
1279 | } | |
1280 | ||
7f79c47e DE |
1281 | /* For docs see target.h, to_xfer_partial. */ |
1282 | ||
9b409511 | 1283 | enum target_xfer_status |
27394598 AC |
1284 | target_xfer_partial (struct target_ops *ops, |
1285 | enum target_object object, const char *annex, | |
4ac248ca | 1286 | gdb_byte *readbuf, const gdb_byte *writebuf, |
9b409511 YQ |
1287 | ULONGEST offset, ULONGEST len, |
1288 | ULONGEST *xfered_len) | |
27394598 | 1289 | { |
9b409511 | 1290 | enum target_xfer_status retval; |
27394598 AC |
1291 | |
1292 | gdb_assert (ops->to_xfer_partial != NULL); | |
cf7a04e8 | 1293 | |
ce6d0892 YQ |
1294 | /* Transfer is done when LEN is zero. */ |
1295 | if (len == 0) | |
9b409511 | 1296 | return TARGET_XFER_EOF; |
ce6d0892 | 1297 | |
d914c394 SS |
1298 | if (writebuf && !may_write_memory) |
1299 | error (_("Writing to memory is not allowed (addr %s, len %s)"), | |
1300 | core_addr_to_string_nz (offset), plongest (len)); | |
1301 | ||
9b409511 YQ |
1302 | *xfered_len = 0; |
1303 | ||
cf7a04e8 DJ |
1304 | /* If this is a memory transfer, let the memory-specific code |
1305 | have a look at it instead. Memory transfers are more | |
1306 | complicated. */ | |
29453a14 YQ |
1307 | if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY |
1308 | || object == TARGET_OBJECT_CODE_MEMORY) | |
4e5d721f | 1309 | retval = memory_xfer_partial (ops, object, readbuf, |
9b409511 | 1310 | writebuf, offset, len, xfered_len); |
9f713294 | 1311 | else if (object == TARGET_OBJECT_RAW_MEMORY) |
cf7a04e8 | 1312 | { |
0fec99e8 PA |
1313 | /* Skip/avoid accessing the target if the memory region |
1314 | attributes block the access. Check this here instead of in | |
1315 | raw_memory_xfer_partial as otherwise we'd end up checking | |
1316 | this twice in the case of the memory_xfer_partial path is | |
1317 | taken; once before checking the dcache, and another in the | |
1318 | tail call to raw_memory_xfer_partial. */ | |
1319 | if (!memory_xfer_check_region (readbuf, writebuf, offset, len, &len, | |
1320 | NULL)) | |
1321 | return TARGET_XFER_E_IO; | |
1322 | ||
9f713294 | 1323 | /* Request the normal memory object from other layers. */ |
9b409511 YQ |
1324 | retval = raw_memory_xfer_partial (ops, readbuf, writebuf, offset, len, |
1325 | xfered_len); | |
cf7a04e8 | 1326 | } |
9f713294 YQ |
1327 | else |
1328 | retval = ops->to_xfer_partial (ops, object, annex, readbuf, | |
9b409511 | 1329 | writebuf, offset, len, xfered_len); |
cf7a04e8 | 1330 | |
27394598 AC |
1331 | if (targetdebug) |
1332 | { | |
1333 | const unsigned char *myaddr = NULL; | |
1334 | ||
1335 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a | 1336 | "%s:target_xfer_partial " |
9b409511 | 1337 | "(%d, %s, %s, %s, %s, %s) = %d, %s", |
27394598 AC |
1338 | ops->to_shortname, |
1339 | (int) object, | |
1340 | (annex ? annex : "(null)"), | |
53b71562 JB |
1341 | host_address_to_string (readbuf), |
1342 | host_address_to_string (writebuf), | |
0b1553bc | 1343 | core_addr_to_string_nz (offset), |
9b409511 YQ |
1344 | pulongest (len), retval, |
1345 | pulongest (*xfered_len)); | |
27394598 AC |
1346 | |
1347 | if (readbuf) | |
1348 | myaddr = readbuf; | |
1349 | if (writebuf) | |
1350 | myaddr = writebuf; | |
9b409511 | 1351 | if (retval == TARGET_XFER_OK && myaddr != NULL) |
27394598 AC |
1352 | { |
1353 | int i; | |
2bc416ba | 1354 | |
27394598 | 1355 | fputs_unfiltered (", bytes =", gdb_stdlog); |
9b409511 | 1356 | for (i = 0; i < *xfered_len; i++) |
27394598 | 1357 | { |
53b71562 | 1358 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1359 | { |
1360 | if (targetdebug < 2 && i > 0) | |
1361 | { | |
1362 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
1363 | break; | |
1364 | } | |
1365 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1366 | } | |
2bc416ba | 1367 | |
27394598 AC |
1368 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
1369 | } | |
1370 | } | |
2bc416ba | 1371 | |
27394598 AC |
1372 | fputc_unfiltered ('\n', gdb_stdlog); |
1373 | } | |
9b409511 YQ |
1374 | |
1375 | /* Check implementations of to_xfer_partial update *XFERED_LEN | |
1376 | properly. Do assertion after printing debug messages, so that we | |
1377 | can find more clues on assertion failure from debugging messages. */ | |
bc113b4e | 1378 | if (retval == TARGET_XFER_OK || retval == TARGET_XFER_UNAVAILABLE) |
9b409511 YQ |
1379 | gdb_assert (*xfered_len > 0); |
1380 | ||
27394598 AC |
1381 | return retval; |
1382 | } | |
1383 | ||
578d3588 PA |
1384 | /* Read LEN bytes of target memory at address MEMADDR, placing the |
1385 | results in GDB's memory at MYADDR. Returns either 0 for success or | |
9b409511 | 1386 | TARGET_XFER_E_IO if any error occurs. |
c906108c SS |
1387 | |
1388 | If an error occurs, no guarantee is made about the contents of the data at | |
1389 | MYADDR. In particular, the caller should not depend upon partial reads | |
1390 | filling the buffer with good data. There is no way for the caller to know | |
1391 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 | 1392 | deal with partial reads should call target_read (which will retry until |
c378eb4e | 1393 | it makes no progress, and then return how much was transferred). */ |
c906108c SS |
1394 | |
1395 | int | |
1b162304 | 1396 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
c906108c | 1397 | { |
c35b1492 PA |
1398 | /* Dispatch to the topmost target, not the flattened current_target. |
1399 | Memory accesses check target->to_has_(all_)memory, and the | |
1400 | flattened target doesn't inherit those. */ | |
1401 | if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1402 | myaddr, memaddr, len) == len) |
1403 | return 0; | |
0779438d | 1404 | else |
578d3588 | 1405 | return TARGET_XFER_E_IO; |
c906108c SS |
1406 | } |
1407 | ||
721ec300 GB |
1408 | /* See target/target.h. */ |
1409 | ||
1410 | int | |
1411 | target_read_uint32 (CORE_ADDR memaddr, uint32_t *result) | |
1412 | { | |
1413 | gdb_byte buf[4]; | |
1414 | int r; | |
1415 | ||
1416 | r = target_read_memory (memaddr, buf, sizeof buf); | |
1417 | if (r != 0) | |
1418 | return r; | |
1419 | *result = extract_unsigned_integer (buf, sizeof buf, | |
1420 | gdbarch_byte_order (target_gdbarch ())); | |
1421 | return 0; | |
1422 | } | |
1423 | ||
aee4bf85 PA |
1424 | /* Like target_read_memory, but specify explicitly that this is a read |
1425 | from the target's raw memory. That is, this read bypasses the | |
1426 | dcache, breakpoint shadowing, etc. */ | |
1427 | ||
1428 | int | |
1429 | target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1430 | { | |
1431 | /* See comment in target_read_memory about why the request starts at | |
1432 | current_target.beneath. */ | |
1433 | if (target_read (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, | |
1434 | myaddr, memaddr, len) == len) | |
1435 | return 0; | |
1436 | else | |
1437 | return TARGET_XFER_E_IO; | |
1438 | } | |
1439 | ||
4e5d721f DE |
1440 | /* Like target_read_memory, but specify explicitly that this is a read from |
1441 | the target's stack. This may trigger different cache behavior. */ | |
1442 | ||
1443 | int | |
45aa4659 | 1444 | target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
4e5d721f | 1445 | { |
aee4bf85 PA |
1446 | /* See comment in target_read_memory about why the request starts at |
1447 | current_target.beneath. */ | |
4e5d721f DE |
1448 | if (target_read (current_target.beneath, TARGET_OBJECT_STACK_MEMORY, NULL, |
1449 | myaddr, memaddr, len) == len) | |
1450 | return 0; | |
1451 | else | |
578d3588 | 1452 | return TARGET_XFER_E_IO; |
4e5d721f DE |
1453 | } |
1454 | ||
29453a14 YQ |
1455 | /* Like target_read_memory, but specify explicitly that this is a read from |
1456 | the target's code. This may trigger different cache behavior. */ | |
1457 | ||
1458 | int | |
1459 | target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1460 | { | |
aee4bf85 PA |
1461 | /* See comment in target_read_memory about why the request starts at |
1462 | current_target.beneath. */ | |
29453a14 YQ |
1463 | if (target_read (current_target.beneath, TARGET_OBJECT_CODE_MEMORY, NULL, |
1464 | myaddr, memaddr, len) == len) | |
1465 | return 0; | |
1466 | else | |
1467 | return TARGET_XFER_E_IO; | |
1468 | } | |
1469 | ||
7f79c47e | 1470 | /* Write LEN bytes from MYADDR to target memory at address MEMADDR. |
9b409511 | 1471 | Returns either 0 for success or TARGET_XFER_E_IO if any |
578d3588 PA |
1472 | error occurs. If an error occurs, no guarantee is made about how |
1473 | much data got written. Callers that can deal with partial writes | |
1474 | should call target_write. */ | |
7f79c47e | 1475 | |
c906108c | 1476 | int |
45aa4659 | 1477 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
c906108c | 1478 | { |
aee4bf85 PA |
1479 | /* See comment in target_read_memory about why the request starts at |
1480 | current_target.beneath. */ | |
c35b1492 | 1481 | if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, |
cf7a04e8 DJ |
1482 | myaddr, memaddr, len) == len) |
1483 | return 0; | |
0779438d | 1484 | else |
578d3588 | 1485 | return TARGET_XFER_E_IO; |
c906108c | 1486 | } |
c5aa993b | 1487 | |
f0ba3972 | 1488 | /* Write LEN bytes from MYADDR to target raw memory at address |
9b409511 | 1489 | MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO |
578d3588 PA |
1490 | if any error occurs. If an error occurs, no guarantee is made |
1491 | about how much data got written. Callers that can deal with | |
1492 | partial writes should call target_write. */ | |
f0ba3972 PA |
1493 | |
1494 | int | |
45aa4659 | 1495 | target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
f0ba3972 | 1496 | { |
aee4bf85 PA |
1497 | /* See comment in target_read_memory about why the request starts at |
1498 | current_target.beneath. */ | |
f0ba3972 PA |
1499 | if (target_write (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, |
1500 | myaddr, memaddr, len) == len) | |
1501 | return 0; | |
1502 | else | |
578d3588 | 1503 | return TARGET_XFER_E_IO; |
f0ba3972 PA |
1504 | } |
1505 | ||
fd79ecee DJ |
1506 | /* Fetch the target's memory map. */ |
1507 | ||
1508 | VEC(mem_region_s) * | |
1509 | target_memory_map (void) | |
1510 | { | |
1511 | VEC(mem_region_s) *result; | |
1512 | struct mem_region *last_one, *this_one; | |
1513 | int ix; | |
1514 | struct target_ops *t; | |
1515 | ||
6b2c5a57 | 1516 | result = current_target.to_memory_map (¤t_target); |
fd79ecee DJ |
1517 | if (result == NULL) |
1518 | return NULL; | |
1519 | ||
1520 | qsort (VEC_address (mem_region_s, result), | |
1521 | VEC_length (mem_region_s, result), | |
1522 | sizeof (struct mem_region), mem_region_cmp); | |
1523 | ||
1524 | /* Check that regions do not overlap. Simultaneously assign | |
1525 | a numbering for the "mem" commands to use to refer to | |
1526 | each region. */ | |
1527 | last_one = NULL; | |
1528 | for (ix = 0; VEC_iterate (mem_region_s, result, ix, this_one); ix++) | |
1529 | { | |
1530 | this_one->number = ix; | |
1531 | ||
1532 | if (last_one && last_one->hi > this_one->lo) | |
1533 | { | |
1534 | warning (_("Overlapping regions in memory map: ignoring")); | |
1535 | VEC_free (mem_region_s, result); | |
1536 | return NULL; | |
1537 | } | |
1538 | last_one = this_one; | |
1539 | } | |
1540 | ||
1541 | return result; | |
1542 | } | |
1543 | ||
a76d924d DJ |
1544 | void |
1545 | target_flash_erase (ULONGEST address, LONGEST length) | |
1546 | { | |
e8a6c6ac | 1547 | current_target.to_flash_erase (¤t_target, address, length); |
a76d924d DJ |
1548 | } |
1549 | ||
1550 | void | |
1551 | target_flash_done (void) | |
1552 | { | |
f6fb2925 | 1553 | current_target.to_flash_done (¤t_target); |
a76d924d DJ |
1554 | } |
1555 | ||
920d2a44 AC |
1556 | static void |
1557 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1558 | struct cmd_list_element *c, const char *value) | |
1559 | { | |
3e43a32a MS |
1560 | fprintf_filtered (file, |
1561 | _("Mode for reading from readonly sections is %s.\n"), | |
920d2a44 AC |
1562 | value); |
1563 | } | |
3a11626d | 1564 | |
7f79c47e | 1565 | /* Target vector read/write partial wrapper functions. */ |
0088c768 | 1566 | |
9b409511 | 1567 | static enum target_xfer_status |
1e3ff5ad AC |
1568 | target_read_partial (struct target_ops *ops, |
1569 | enum target_object object, | |
1b0ba102 | 1570 | const char *annex, gdb_byte *buf, |
9b409511 YQ |
1571 | ULONGEST offset, ULONGEST len, |
1572 | ULONGEST *xfered_len) | |
1e3ff5ad | 1573 | { |
9b409511 YQ |
1574 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len, |
1575 | xfered_len); | |
1e3ff5ad AC |
1576 | } |
1577 | ||
8a55ffb0 | 1578 | static enum target_xfer_status |
1e3ff5ad AC |
1579 | target_write_partial (struct target_ops *ops, |
1580 | enum target_object object, | |
1b0ba102 | 1581 | const char *annex, const gdb_byte *buf, |
9b409511 | 1582 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len) |
1e3ff5ad | 1583 | { |
9b409511 YQ |
1584 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len, |
1585 | xfered_len); | |
1e3ff5ad AC |
1586 | } |
1587 | ||
1588 | /* Wrappers to perform the full transfer. */ | |
7f79c47e DE |
1589 | |
1590 | /* For docs on target_read see target.h. */ | |
1591 | ||
1e3ff5ad AC |
1592 | LONGEST |
1593 | target_read (struct target_ops *ops, | |
1594 | enum target_object object, | |
1b0ba102 | 1595 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1596 | ULONGEST offset, LONGEST len) |
1597 | { | |
1598 | LONGEST xfered = 0; | |
5d502164 | 1599 | |
1e3ff5ad AC |
1600 | while (xfered < len) |
1601 | { | |
9b409511 YQ |
1602 | ULONGEST xfered_len; |
1603 | enum target_xfer_status status; | |
1604 | ||
1605 | status = target_read_partial (ops, object, annex, | |
1606 | (gdb_byte *) buf + xfered, | |
1607 | offset + xfered, len - xfered, | |
1608 | &xfered_len); | |
5d502164 | 1609 | |
1e3ff5ad | 1610 | /* Call an observer, notifying them of the xfer progress? */ |
9b409511 | 1611 | if (status == TARGET_XFER_EOF) |
13547ab6 | 1612 | return xfered; |
9b409511 YQ |
1613 | else if (status == TARGET_XFER_OK) |
1614 | { | |
1615 | xfered += xfered_len; | |
1616 | QUIT; | |
1617 | } | |
1618 | else | |
0088c768 | 1619 | return -1; |
9b409511 | 1620 | |
1e3ff5ad AC |
1621 | } |
1622 | return len; | |
1623 | } | |
1624 | ||
f1a507a1 JB |
1625 | /* Assuming that the entire [begin, end) range of memory cannot be |
1626 | read, try to read whatever subrange is possible to read. | |
1627 | ||
1628 | The function returns, in RESULT, either zero or one memory block. | |
1629 | If there's a readable subrange at the beginning, it is completely | |
1630 | read and returned. Any further readable subrange will not be read. | |
1631 | Otherwise, if there's a readable subrange at the end, it will be | |
1632 | completely read and returned. Any readable subranges before it | |
1633 | (obviously, not starting at the beginning), will be ignored. In | |
1634 | other cases -- either no readable subrange, or readable subrange(s) | |
1635 | that is neither at the beginning, or end, nothing is returned. | |
1636 | ||
1637 | The purpose of this function is to handle a read across a boundary | |
1638 | of accessible memory in a case when memory map is not available. | |
1639 | The above restrictions are fine for this case, but will give | |
1640 | incorrect results if the memory is 'patchy'. However, supporting | |
1641 | 'patchy' memory would require trying to read every single byte, | |
1642 | and it seems unacceptable solution. Explicit memory map is | |
1643 | recommended for this case -- and target_read_memory_robust will | |
1644 | take care of reading multiple ranges then. */ | |
8dedea02 VP |
1645 | |
1646 | static void | |
3e43a32a MS |
1647 | read_whatever_is_readable (struct target_ops *ops, |
1648 | ULONGEST begin, ULONGEST end, | |
8dedea02 | 1649 | VEC(memory_read_result_s) **result) |
d5086790 | 1650 | { |
f1a507a1 | 1651 | gdb_byte *buf = xmalloc (end - begin); |
8dedea02 VP |
1652 | ULONGEST current_begin = begin; |
1653 | ULONGEST current_end = end; | |
1654 | int forward; | |
1655 | memory_read_result_s r; | |
9b409511 | 1656 | ULONGEST xfered_len; |
8dedea02 VP |
1657 | |
1658 | /* If we previously failed to read 1 byte, nothing can be done here. */ | |
1659 | if (end - begin <= 1) | |
13b3fd9b MS |
1660 | { |
1661 | xfree (buf); | |
1662 | return; | |
1663 | } | |
8dedea02 VP |
1664 | |
1665 | /* Check that either first or the last byte is readable, and give up | |
c378eb4e | 1666 | if not. This heuristic is meant to permit reading accessible memory |
8dedea02 VP |
1667 | at the boundary of accessible region. */ |
1668 | if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 | 1669 | buf, begin, 1, &xfered_len) == TARGET_XFER_OK) |
8dedea02 VP |
1670 | { |
1671 | forward = 1; | |
1672 | ++current_begin; | |
1673 | } | |
1674 | else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 YQ |
1675 | buf + (end-begin) - 1, end - 1, 1, |
1676 | &xfered_len) == TARGET_XFER_OK) | |
8dedea02 VP |
1677 | { |
1678 | forward = 0; | |
1679 | --current_end; | |
1680 | } | |
1681 | else | |
1682 | { | |
13b3fd9b | 1683 | xfree (buf); |
8dedea02 VP |
1684 | return; |
1685 | } | |
1686 | ||
1687 | /* Loop invariant is that the [current_begin, current_end) was previously | |
1688 | found to be not readable as a whole. | |
1689 | ||
1690 | Note loop condition -- if the range has 1 byte, we can't divide the range | |
1691 | so there's no point trying further. */ | |
1692 | while (current_end - current_begin > 1) | |
1693 | { | |
1694 | ULONGEST first_half_begin, first_half_end; | |
1695 | ULONGEST second_half_begin, second_half_end; | |
1696 | LONGEST xfer; | |
8dedea02 | 1697 | ULONGEST middle = current_begin + (current_end - current_begin)/2; |
f1a507a1 | 1698 | |
8dedea02 VP |
1699 | if (forward) |
1700 | { | |
1701 | first_half_begin = current_begin; | |
1702 | first_half_end = middle; | |
1703 | second_half_begin = middle; | |
1704 | second_half_end = current_end; | |
1705 | } | |
1706 | else | |
1707 | { | |
1708 | first_half_begin = middle; | |
1709 | first_half_end = current_end; | |
1710 | second_half_begin = current_begin; | |
1711 | second_half_end = middle; | |
1712 | } | |
1713 | ||
1714 | xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
1715 | buf + (first_half_begin - begin), | |
1716 | first_half_begin, | |
1717 | first_half_end - first_half_begin); | |
1718 | ||
1719 | if (xfer == first_half_end - first_half_begin) | |
1720 | { | |
c378eb4e | 1721 | /* This half reads up fine. So, the error must be in the |
3e43a32a | 1722 | other half. */ |
8dedea02 VP |
1723 | current_begin = second_half_begin; |
1724 | current_end = second_half_end; | |
1725 | } | |
1726 | else | |
1727 | { | |
c378eb4e MS |
1728 | /* This half is not readable. Because we've tried one byte, we |
1729 | know some part of this half if actually redable. Go to the next | |
8dedea02 VP |
1730 | iteration to divide again and try to read. |
1731 | ||
1732 | We don't handle the other half, because this function only tries | |
1733 | to read a single readable subrange. */ | |
1734 | current_begin = first_half_begin; | |
1735 | current_end = first_half_end; | |
1736 | } | |
1737 | } | |
1738 | ||
1739 | if (forward) | |
1740 | { | |
1741 | /* The [begin, current_begin) range has been read. */ | |
1742 | r.begin = begin; | |
1743 | r.end = current_begin; | |
1744 | r.data = buf; | |
1745 | } | |
1746 | else | |
1747 | { | |
1748 | /* The [current_end, end) range has been read. */ | |
1749 | LONGEST rlen = end - current_end; | |
f1a507a1 | 1750 | |
8dedea02 VP |
1751 | r.data = xmalloc (rlen); |
1752 | memcpy (r.data, buf + current_end - begin, rlen); | |
1753 | r.begin = current_end; | |
1754 | r.end = end; | |
1755 | xfree (buf); | |
1756 | } | |
1757 | VEC_safe_push(memory_read_result_s, (*result), &r); | |
1758 | } | |
1759 | ||
1760 | void | |
1761 | free_memory_read_result_vector (void *x) | |
1762 | { | |
1763 | VEC(memory_read_result_s) *v = x; | |
1764 | memory_read_result_s *current; | |
1765 | int ix; | |
1766 | ||
1767 | for (ix = 0; VEC_iterate (memory_read_result_s, v, ix, current); ++ix) | |
1768 | { | |
1769 | xfree (current->data); | |
1770 | } | |
1771 | VEC_free (memory_read_result_s, v); | |
1772 | } | |
1773 | ||
1774 | VEC(memory_read_result_s) * | |
1775 | read_memory_robust (struct target_ops *ops, ULONGEST offset, LONGEST len) | |
1776 | { | |
1777 | VEC(memory_read_result_s) *result = 0; | |
1778 | ||
1779 | LONGEST xfered = 0; | |
d5086790 VP |
1780 | while (xfered < len) |
1781 | { | |
8dedea02 VP |
1782 | struct mem_region *region = lookup_mem_region (offset + xfered); |
1783 | LONGEST rlen; | |
5d502164 | 1784 | |
8dedea02 VP |
1785 | /* If there is no explicit region, a fake one should be created. */ |
1786 | gdb_assert (region); | |
1787 | ||
1788 | if (region->hi == 0) | |
1789 | rlen = len - xfered; | |
1790 | else | |
1791 | rlen = region->hi - offset; | |
1792 | ||
1793 | if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO) | |
d5086790 | 1794 | { |
c378eb4e | 1795 | /* Cannot read this region. Note that we can end up here only |
8dedea02 VP |
1796 | if the region is explicitly marked inaccessible, or |
1797 | 'inaccessible-by-default' is in effect. */ | |
1798 | xfered += rlen; | |
1799 | } | |
1800 | else | |
1801 | { | |
1802 | LONGEST to_read = min (len - xfered, rlen); | |
1803 | gdb_byte *buffer = (gdb_byte *)xmalloc (to_read); | |
1804 | ||
1805 | LONGEST xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
1806 | (gdb_byte *) buffer, | |
1807 | offset + xfered, to_read); | |
1808 | /* Call an observer, notifying them of the xfer progress? */ | |
d5086790 | 1809 | if (xfer <= 0) |
d5086790 | 1810 | { |
c378eb4e | 1811 | /* Got an error reading full chunk. See if maybe we can read |
8dedea02 VP |
1812 | some subrange. */ |
1813 | xfree (buffer); | |
3e43a32a MS |
1814 | read_whatever_is_readable (ops, offset + xfered, |
1815 | offset + xfered + to_read, &result); | |
8dedea02 | 1816 | xfered += to_read; |
d5086790 | 1817 | } |
8dedea02 VP |
1818 | else |
1819 | { | |
1820 | struct memory_read_result r; | |
1821 | r.data = buffer; | |
1822 | r.begin = offset + xfered; | |
1823 | r.end = r.begin + xfer; | |
1824 | VEC_safe_push (memory_read_result_s, result, &r); | |
1825 | xfered += xfer; | |
1826 | } | |
1827 | QUIT; | |
d5086790 | 1828 | } |
d5086790 | 1829 | } |
8dedea02 | 1830 | return result; |
d5086790 VP |
1831 | } |
1832 | ||
8dedea02 | 1833 | |
cf7a04e8 DJ |
1834 | /* An alternative to target_write with progress callbacks. */ |
1835 | ||
1e3ff5ad | 1836 | LONGEST |
cf7a04e8 DJ |
1837 | target_write_with_progress (struct target_ops *ops, |
1838 | enum target_object object, | |
1839 | const char *annex, const gdb_byte *buf, | |
1840 | ULONGEST offset, LONGEST len, | |
1841 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad AC |
1842 | { |
1843 | LONGEST xfered = 0; | |
a76d924d DJ |
1844 | |
1845 | /* Give the progress callback a chance to set up. */ | |
1846 | if (progress) | |
1847 | (*progress) (0, baton); | |
1848 | ||
1e3ff5ad AC |
1849 | while (xfered < len) |
1850 | { | |
9b409511 YQ |
1851 | ULONGEST xfered_len; |
1852 | enum target_xfer_status status; | |
1853 | ||
1854 | status = target_write_partial (ops, object, annex, | |
1855 | (gdb_byte *) buf + xfered, | |
1856 | offset + xfered, len - xfered, | |
1857 | &xfered_len); | |
cf7a04e8 | 1858 | |
5c328c05 YQ |
1859 | if (status != TARGET_XFER_OK) |
1860 | return status == TARGET_XFER_EOF ? xfered : -1; | |
cf7a04e8 DJ |
1861 | |
1862 | if (progress) | |
9b409511 | 1863 | (*progress) (xfered_len, baton); |
cf7a04e8 | 1864 | |
9b409511 | 1865 | xfered += xfered_len; |
1e3ff5ad AC |
1866 | QUIT; |
1867 | } | |
1868 | return len; | |
1869 | } | |
1870 | ||
7f79c47e DE |
1871 | /* For docs on target_write see target.h. */ |
1872 | ||
cf7a04e8 DJ |
1873 | LONGEST |
1874 | target_write (struct target_ops *ops, | |
1875 | enum target_object object, | |
1876 | const char *annex, const gdb_byte *buf, | |
1877 | ULONGEST offset, LONGEST len) | |
1878 | { | |
1879 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
1880 | NULL, NULL); | |
1881 | } | |
1882 | ||
159f81f3 DJ |
1883 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
1884 | the size of the transferred data. PADDING additional bytes are | |
1885 | available in *BUF_P. This is a helper function for | |
1886 | target_read_alloc; see the declaration of that function for more | |
1887 | information. */ | |
13547ab6 | 1888 | |
159f81f3 DJ |
1889 | static LONGEST |
1890 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, | |
1891 | const char *annex, gdb_byte **buf_p, int padding) | |
13547ab6 DJ |
1892 | { |
1893 | size_t buf_alloc, buf_pos; | |
1894 | gdb_byte *buf; | |
13547ab6 DJ |
1895 | |
1896 | /* This function does not have a length parameter; it reads the | |
1897 | entire OBJECT). Also, it doesn't support objects fetched partly | |
1898 | from one target and partly from another (in a different stratum, | |
1899 | e.g. a core file and an executable). Both reasons make it | |
1900 | unsuitable for reading memory. */ | |
1901 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
1902 | ||
1903 | /* Start by reading up to 4K at a time. The target will throttle | |
1904 | this number down if necessary. */ | |
1905 | buf_alloc = 4096; | |
1906 | buf = xmalloc (buf_alloc); | |
1907 | buf_pos = 0; | |
1908 | while (1) | |
1909 | { | |
9b409511 YQ |
1910 | ULONGEST xfered_len; |
1911 | enum target_xfer_status status; | |
1912 | ||
1913 | status = target_read_partial (ops, object, annex, &buf[buf_pos], | |
1914 | buf_pos, buf_alloc - buf_pos - padding, | |
1915 | &xfered_len); | |
1916 | ||
1917 | if (status == TARGET_XFER_EOF) | |
13547ab6 DJ |
1918 | { |
1919 | /* Read all there was. */ | |
1920 | if (buf_pos == 0) | |
1921 | xfree (buf); | |
1922 | else | |
1923 | *buf_p = buf; | |
1924 | return buf_pos; | |
1925 | } | |
9b409511 YQ |
1926 | else if (status != TARGET_XFER_OK) |
1927 | { | |
1928 | /* An error occurred. */ | |
1929 | xfree (buf); | |
1930 | return TARGET_XFER_E_IO; | |
1931 | } | |
13547ab6 | 1932 | |
9b409511 | 1933 | buf_pos += xfered_len; |
13547ab6 DJ |
1934 | |
1935 | /* If the buffer is filling up, expand it. */ | |
1936 | if (buf_alloc < buf_pos * 2) | |
1937 | { | |
1938 | buf_alloc *= 2; | |
1939 | buf = xrealloc (buf, buf_alloc); | |
1940 | } | |
1941 | ||
1942 | QUIT; | |
1943 | } | |
1944 | } | |
1945 | ||
159f81f3 DJ |
1946 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
1947 | the size of the transferred data. See the declaration in "target.h" | |
1948 | function for more information about the return value. */ | |
1949 | ||
1950 | LONGEST | |
1951 | target_read_alloc (struct target_ops *ops, enum target_object object, | |
1952 | const char *annex, gdb_byte **buf_p) | |
1953 | { | |
1954 | return target_read_alloc_1 (ops, object, annex, buf_p, 0); | |
1955 | } | |
1956 | ||
1957 | /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and | |
1958 | returned as a string, allocated using xmalloc. If an error occurs | |
1959 | or the transfer is unsupported, NULL is returned. Empty objects | |
1960 | are returned as allocated but empty strings. A warning is issued | |
1961 | if the result contains any embedded NUL bytes. */ | |
1962 | ||
1963 | char * | |
1964 | target_read_stralloc (struct target_ops *ops, enum target_object object, | |
1965 | const char *annex) | |
1966 | { | |
39086a0e PA |
1967 | gdb_byte *buffer; |
1968 | char *bufstr; | |
7313baad | 1969 | LONGEST i, transferred; |
159f81f3 | 1970 | |
39086a0e PA |
1971 | transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1); |
1972 | bufstr = (char *) buffer; | |
159f81f3 DJ |
1973 | |
1974 | if (transferred < 0) | |
1975 | return NULL; | |
1976 | ||
1977 | if (transferred == 0) | |
1978 | return xstrdup (""); | |
1979 | ||
39086a0e | 1980 | bufstr[transferred] = 0; |
7313baad UW |
1981 | |
1982 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
39086a0e PA |
1983 | for (i = strlen (bufstr); i < transferred; i++) |
1984 | if (bufstr[i] != 0) | |
7313baad UW |
1985 | { |
1986 | warning (_("target object %d, annex %s, " | |
1987 | "contained unexpected null characters"), | |
1988 | (int) object, annex ? annex : "(none)"); | |
1989 | break; | |
1990 | } | |
159f81f3 | 1991 | |
39086a0e | 1992 | return bufstr; |
159f81f3 DJ |
1993 | } |
1994 | ||
b6591e8b AC |
1995 | /* Memory transfer methods. */ |
1996 | ||
1997 | void | |
1b0ba102 | 1998 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
1999 | LONGEST len) |
2000 | { | |
07b82ea5 PA |
2001 | /* This method is used to read from an alternate, non-current |
2002 | target. This read must bypass the overlay support (as symbols | |
2003 | don't match this target), and GDB's internal cache (wrong cache | |
2004 | for this target). */ | |
2005 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) | |
b6591e8b | 2006 | != len) |
578d3588 | 2007 | memory_error (TARGET_XFER_E_IO, addr); |
b6591e8b AC |
2008 | } |
2009 | ||
2010 | ULONGEST | |
5d502164 MS |
2011 | get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr, |
2012 | int len, enum bfd_endian byte_order) | |
b6591e8b | 2013 | { |
f6519ebc | 2014 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
2015 | |
2016 | gdb_assert (len <= sizeof (buf)); | |
2017 | get_target_memory (ops, addr, buf, len); | |
e17a4113 | 2018 | return extract_unsigned_integer (buf, len, byte_order); |
b6591e8b AC |
2019 | } |
2020 | ||
3db08215 MM |
2021 | /* See target.h. */ |
2022 | ||
d914c394 SS |
2023 | int |
2024 | target_insert_breakpoint (struct gdbarch *gdbarch, | |
2025 | struct bp_target_info *bp_tgt) | |
2026 | { | |
2027 | if (!may_insert_breakpoints) | |
2028 | { | |
2029 | warning (_("May not insert breakpoints")); | |
2030 | return 1; | |
2031 | } | |
2032 | ||
6b84065d TT |
2033 | return current_target.to_insert_breakpoint (¤t_target, |
2034 | gdbarch, bp_tgt); | |
d914c394 SS |
2035 | } |
2036 | ||
3db08215 MM |
2037 | /* See target.h. */ |
2038 | ||
d914c394 | 2039 | int |
6b84065d TT |
2040 | target_remove_breakpoint (struct gdbarch *gdbarch, |
2041 | struct bp_target_info *bp_tgt) | |
d914c394 SS |
2042 | { |
2043 | /* This is kind of a weird case to handle, but the permission might | |
2044 | have been changed after breakpoints were inserted - in which case | |
2045 | we should just take the user literally and assume that any | |
2046 | breakpoints should be left in place. */ | |
2047 | if (!may_insert_breakpoints) | |
2048 | { | |
2049 | warning (_("May not remove breakpoints")); | |
2050 | return 1; | |
2051 | } | |
2052 | ||
6b84065d TT |
2053 | return current_target.to_remove_breakpoint (¤t_target, |
2054 | gdbarch, bp_tgt); | |
d914c394 SS |
2055 | } |
2056 | ||
c906108c | 2057 | static void |
fba45db2 | 2058 | target_info (char *args, int from_tty) |
c906108c SS |
2059 | { |
2060 | struct target_ops *t; | |
c906108c | 2061 | int has_all_mem = 0; |
c5aa993b | 2062 | |
c906108c | 2063 | if (symfile_objfile != NULL) |
4262abfb JK |
2064 | printf_unfiltered (_("Symbols from \"%s\".\n"), |
2065 | objfile_name (symfile_objfile)); | |
c906108c | 2066 | |
258b763a | 2067 | for (t = target_stack; t != NULL; t = t->beneath) |
c906108c | 2068 | { |
c35b1492 | 2069 | if (!(*t->to_has_memory) (t)) |
c906108c SS |
2070 | continue; |
2071 | ||
c5aa993b | 2072 | if ((int) (t->to_stratum) <= (int) dummy_stratum) |
c906108c SS |
2073 | continue; |
2074 | if (has_all_mem) | |
3e43a32a MS |
2075 | printf_unfiltered (_("\tWhile running this, " |
2076 | "GDB does not access memory from...\n")); | |
c5aa993b JM |
2077 | printf_unfiltered ("%s:\n", t->to_longname); |
2078 | (t->to_files_info) (t); | |
c35b1492 | 2079 | has_all_mem = (*t->to_has_all_memory) (t); |
c906108c SS |
2080 | } |
2081 | } | |
2082 | ||
fd79ecee DJ |
2083 | /* This function is called before any new inferior is created, e.g. |
2084 | by running a program, attaching, or connecting to a target. | |
2085 | It cleans up any state from previous invocations which might | |
2086 | change between runs. This is a subset of what target_preopen | |
2087 | resets (things which might change between targets). */ | |
2088 | ||
2089 | void | |
2090 | target_pre_inferior (int from_tty) | |
2091 | { | |
c378eb4e | 2092 | /* Clear out solib state. Otherwise the solib state of the previous |
b9db4ced | 2093 | inferior might have survived and is entirely wrong for the new |
c378eb4e | 2094 | target. This has been observed on GNU/Linux using glibc 2.3. How |
b9db4ced UW |
2095 | to reproduce: |
2096 | ||
2097 | bash$ ./foo& | |
2098 | [1] 4711 | |
2099 | bash$ ./foo& | |
2100 | [1] 4712 | |
2101 | bash$ gdb ./foo | |
2102 | [...] | |
2103 | (gdb) attach 4711 | |
2104 | (gdb) detach | |
2105 | (gdb) attach 4712 | |
2106 | Cannot access memory at address 0xdeadbeef | |
2107 | */ | |
b9db4ced | 2108 | |
50c71eaf PA |
2109 | /* In some OSs, the shared library list is the same/global/shared |
2110 | across inferiors. If code is shared between processes, so are | |
2111 | memory regions and features. */ | |
f5656ead | 2112 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
50c71eaf PA |
2113 | { |
2114 | no_shared_libraries (NULL, from_tty); | |
2115 | ||
2116 | invalidate_target_mem_regions (); | |
424163ea | 2117 | |
50c71eaf PA |
2118 | target_clear_description (); |
2119 | } | |
8ffcbaaf YQ |
2120 | |
2121 | agent_capability_invalidate (); | |
fd79ecee DJ |
2122 | } |
2123 | ||
b8fa0bfa PA |
2124 | /* Callback for iterate_over_inferiors. Gets rid of the given |
2125 | inferior. */ | |
2126 | ||
2127 | static int | |
2128 | dispose_inferior (struct inferior *inf, void *args) | |
2129 | { | |
2130 | struct thread_info *thread; | |
2131 | ||
2132 | thread = any_thread_of_process (inf->pid); | |
2133 | if (thread) | |
2134 | { | |
2135 | switch_to_thread (thread->ptid); | |
2136 | ||
2137 | /* Core inferiors actually should be detached, not killed. */ | |
2138 | if (target_has_execution) | |
2139 | target_kill (); | |
2140 | else | |
2141 | target_detach (NULL, 0); | |
2142 | } | |
2143 | ||
2144 | return 0; | |
2145 | } | |
2146 | ||
c906108c SS |
2147 | /* This is to be called by the open routine before it does |
2148 | anything. */ | |
2149 | ||
2150 | void | |
fba45db2 | 2151 | target_preopen (int from_tty) |
c906108c | 2152 | { |
c5aa993b | 2153 | dont_repeat (); |
c906108c | 2154 | |
b8fa0bfa | 2155 | if (have_inferiors ()) |
c5aa993b | 2156 | { |
adf40b2e | 2157 | if (!from_tty |
b8fa0bfa PA |
2158 | || !have_live_inferiors () |
2159 | || query (_("A program is being debugged already. Kill it? "))) | |
2160 | iterate_over_inferiors (dispose_inferior, NULL); | |
c906108c | 2161 | else |
8a3fe4f8 | 2162 | error (_("Program not killed.")); |
c906108c SS |
2163 | } |
2164 | ||
2165 | /* Calling target_kill may remove the target from the stack. But if | |
2166 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
2167 | /* Leave the exec target, though. The user may be switching from a |
2168 | live process to a core of the same program. */ | |
460014f5 | 2169 | pop_all_targets_above (file_stratum); |
fd79ecee DJ |
2170 | |
2171 | target_pre_inferior (from_tty); | |
c906108c SS |
2172 | } |
2173 | ||
2174 | /* Detach a target after doing deferred register stores. */ | |
2175 | ||
2176 | void | |
52554a0e | 2177 | target_detach (const char *args, int from_tty) |
c906108c | 2178 | { |
136d6dae VP |
2179 | struct target_ops* t; |
2180 | ||
f5656ead | 2181 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
2182 | /* Don't remove global breakpoints here. They're removed on |
2183 | disconnection from the target. */ | |
2184 | ; | |
2185 | else | |
2186 | /* If we're in breakpoints-always-inserted mode, have to remove | |
2187 | them before detaching. */ | |
dfd4cc63 | 2188 | remove_breakpoints_pid (ptid_get_pid (inferior_ptid)); |
74960c60 | 2189 | |
24291992 PA |
2190 | prepare_for_detach (); |
2191 | ||
09da0d0a | 2192 | current_target.to_detach (¤t_target, args, from_tty); |
c906108c SS |
2193 | } |
2194 | ||
6ad8ae5c | 2195 | void |
fee354ee | 2196 | target_disconnect (const char *args, int from_tty) |
6ad8ae5c | 2197 | { |
50c71eaf PA |
2198 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
2199 | are global across processes, we have to remove them before | |
2200 | disconnecting. */ | |
74960c60 VP |
2201 | remove_breakpoints (); |
2202 | ||
86a0854a | 2203 | current_target.to_disconnect (¤t_target, args, from_tty); |
6ad8ae5c DJ |
2204 | } |
2205 | ||
117de6a9 | 2206 | ptid_t |
47608cb1 | 2207 | target_wait (ptid_t ptid, struct target_waitstatus *status, int options) |
117de6a9 | 2208 | { |
a7068b60 | 2209 | return (current_target.to_wait) (¤t_target, ptid, status, options); |
117de6a9 PA |
2210 | } |
2211 | ||
2212 | char * | |
2213 | target_pid_to_str (ptid_t ptid) | |
2214 | { | |
770234d3 | 2215 | return (*current_target.to_pid_to_str) (¤t_target, ptid); |
117de6a9 PA |
2216 | } |
2217 | ||
4694da01 TT |
2218 | char * |
2219 | target_thread_name (struct thread_info *info) | |
2220 | { | |
825828fc | 2221 | return current_target.to_thread_name (¤t_target, info); |
4694da01 TT |
2222 | } |
2223 | ||
e1ac3328 | 2224 | void |
2ea28649 | 2225 | target_resume (ptid_t ptid, int step, enum gdb_signal signal) |
e1ac3328 | 2226 | { |
28439f5e PA |
2227 | struct target_ops *t; |
2228 | ||
4e5d721f | 2229 | target_dcache_invalidate (); |
28439f5e | 2230 | |
6b84065d | 2231 | current_target.to_resume (¤t_target, ptid, step, signal); |
28439f5e | 2232 | |
6b84065d | 2233 | registers_changed_ptid (ptid); |
251bde03 PA |
2234 | /* We only set the internal executing state here. The user/frontend |
2235 | running state is set at a higher level. */ | |
6b84065d | 2236 | set_executing (ptid, 1); |
6b84065d | 2237 | clear_inline_frame_state (ptid); |
e1ac3328 | 2238 | } |
2455069d UW |
2239 | |
2240 | void | |
2241 | target_pass_signals (int numsigs, unsigned char *pass_signals) | |
2242 | { | |
035cad7f | 2243 | (*current_target.to_pass_signals) (¤t_target, numsigs, pass_signals); |
2455069d UW |
2244 | } |
2245 | ||
9b224c5e PA |
2246 | void |
2247 | target_program_signals (int numsigs, unsigned char *program_signals) | |
2248 | { | |
7d4f8efa TT |
2249 | (*current_target.to_program_signals) (¤t_target, |
2250 | numsigs, program_signals); | |
9b224c5e PA |
2251 | } |
2252 | ||
098dba18 TT |
2253 | static int |
2254 | default_follow_fork (struct target_ops *self, int follow_child, | |
2255 | int detach_fork) | |
2256 | { | |
2257 | /* Some target returned a fork event, but did not know how to follow it. */ | |
2258 | internal_error (__FILE__, __LINE__, | |
2259 | _("could not find a target to follow fork")); | |
2260 | } | |
2261 | ||
ee057212 DJ |
2262 | /* Look through the list of possible targets for a target that can |
2263 | follow forks. */ | |
2264 | ||
2265 | int | |
07107ca6 | 2266 | target_follow_fork (int follow_child, int detach_fork) |
ee057212 | 2267 | { |
a7068b60 TT |
2268 | return current_target.to_follow_fork (¤t_target, |
2269 | follow_child, detach_fork); | |
ee057212 DJ |
2270 | } |
2271 | ||
8d657035 TT |
2272 | static void |
2273 | default_mourn_inferior (struct target_ops *self) | |
2274 | { | |
2275 | internal_error (__FILE__, __LINE__, | |
2276 | _("could not find a target to follow mourn inferior")); | |
2277 | } | |
2278 | ||
136d6dae VP |
2279 | void |
2280 | target_mourn_inferior (void) | |
2281 | { | |
8d657035 | 2282 | current_target.to_mourn_inferior (¤t_target); |
136d6dae | 2283 | |
8d657035 TT |
2284 | /* We no longer need to keep handles on any of the object files. |
2285 | Make sure to release them to avoid unnecessarily locking any | |
2286 | of them while we're not actually debugging. */ | |
2287 | bfd_cache_close_all (); | |
136d6dae VP |
2288 | } |
2289 | ||
424163ea DJ |
2290 | /* Look for a target which can describe architectural features, starting |
2291 | from TARGET. If we find one, return its description. */ | |
2292 | ||
2293 | const struct target_desc * | |
2294 | target_read_description (struct target_ops *target) | |
2295 | { | |
2117c711 | 2296 | return target->to_read_description (target); |
424163ea DJ |
2297 | } |
2298 | ||
58a5184e | 2299 | /* This implements a basic search of memory, reading target memory and |
08388c79 DE |
2300 | performing the search here (as opposed to performing the search in on the |
2301 | target side with, for example, gdbserver). */ | |
2302 | ||
2303 | int | |
2304 | simple_search_memory (struct target_ops *ops, | |
2305 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2306 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2307 | CORE_ADDR *found_addrp) | |
2308 | { | |
2309 | /* NOTE: also defined in find.c testcase. */ | |
2310 | #define SEARCH_CHUNK_SIZE 16000 | |
2311 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
2312 | /* Buffer to hold memory contents for searching. */ | |
2313 | gdb_byte *search_buf; | |
2314 | unsigned search_buf_size; | |
2315 | struct cleanup *old_cleanups; | |
2316 | ||
2317 | search_buf_size = chunk_size + pattern_len - 1; | |
2318 | ||
2319 | /* No point in trying to allocate a buffer larger than the search space. */ | |
2320 | if (search_space_len < search_buf_size) | |
2321 | search_buf_size = search_space_len; | |
2322 | ||
2323 | search_buf = malloc (search_buf_size); | |
2324 | if (search_buf == NULL) | |
5e1471f5 | 2325 | error (_("Unable to allocate memory to perform the search.")); |
08388c79 DE |
2326 | old_cleanups = make_cleanup (free_current_contents, &search_buf); |
2327 | ||
2328 | /* Prime the search buffer. */ | |
2329 | ||
2330 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2331 | search_buf, start_addr, search_buf_size) != search_buf_size) | |
2332 | { | |
b3dc46ff AB |
2333 | warning (_("Unable to access %s bytes of target " |
2334 | "memory at %s, halting search."), | |
2335 | pulongest (search_buf_size), hex_string (start_addr)); | |
08388c79 DE |
2336 | do_cleanups (old_cleanups); |
2337 | return -1; | |
2338 | } | |
2339 | ||
2340 | /* Perform the search. | |
2341 | ||
2342 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
2343 | When we've scanned N bytes we copy the trailing bytes to the start and | |
2344 | read in another N bytes. */ | |
2345 | ||
2346 | while (search_space_len >= pattern_len) | |
2347 | { | |
2348 | gdb_byte *found_ptr; | |
2349 | unsigned nr_search_bytes = min (search_space_len, search_buf_size); | |
2350 | ||
2351 | found_ptr = memmem (search_buf, nr_search_bytes, | |
2352 | pattern, pattern_len); | |
2353 | ||
2354 | if (found_ptr != NULL) | |
2355 | { | |
2356 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
5d502164 | 2357 | |
08388c79 DE |
2358 | *found_addrp = found_addr; |
2359 | do_cleanups (old_cleanups); | |
2360 | return 1; | |
2361 | } | |
2362 | ||
2363 | /* Not found in this chunk, skip to next chunk. */ | |
2364 | ||
2365 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
2366 | if (search_space_len >= chunk_size) | |
2367 | search_space_len -= chunk_size; | |
2368 | else | |
2369 | search_space_len = 0; | |
2370 | ||
2371 | if (search_space_len >= pattern_len) | |
2372 | { | |
2373 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 2374 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
2375 | int nr_to_read; |
2376 | ||
2377 | /* Copy the trailing part of the previous iteration to the front | |
2378 | of the buffer for the next iteration. */ | |
2379 | gdb_assert (keep_len == pattern_len - 1); | |
2380 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
2381 | ||
2382 | nr_to_read = min (search_space_len - keep_len, chunk_size); | |
2383 | ||
2384 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2385 | search_buf + keep_len, read_addr, | |
2386 | nr_to_read) != nr_to_read) | |
2387 | { | |
b3dc46ff | 2388 | warning (_("Unable to access %s bytes of target " |
9b20d036 | 2389 | "memory at %s, halting search."), |
b3dc46ff | 2390 | plongest (nr_to_read), |
08388c79 DE |
2391 | hex_string (read_addr)); |
2392 | do_cleanups (old_cleanups); | |
2393 | return -1; | |
2394 | } | |
2395 | ||
2396 | start_addr += chunk_size; | |
2397 | } | |
2398 | } | |
2399 | ||
2400 | /* Not found. */ | |
2401 | ||
2402 | do_cleanups (old_cleanups); | |
2403 | return 0; | |
2404 | } | |
2405 | ||
58a5184e TT |
2406 | /* Default implementation of memory-searching. */ |
2407 | ||
2408 | static int | |
2409 | default_search_memory (struct target_ops *self, | |
2410 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2411 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2412 | CORE_ADDR *found_addrp) | |
2413 | { | |
2414 | /* Start over from the top of the target stack. */ | |
2415 | return simple_search_memory (current_target.beneath, | |
2416 | start_addr, search_space_len, | |
2417 | pattern, pattern_len, found_addrp); | |
2418 | } | |
2419 | ||
08388c79 DE |
2420 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the |
2421 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2422 | ||
2423 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2424 | requiring halting of the search (e.g. memory read error). | |
2425 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2426 | ||
2427 | int | |
2428 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2429 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2430 | CORE_ADDR *found_addrp) | |
2431 | { | |
a7068b60 TT |
2432 | return current_target.to_search_memory (¤t_target, start_addr, |
2433 | search_space_len, | |
2434 | pattern, pattern_len, found_addrp); | |
08388c79 DE |
2435 | } |
2436 | ||
8edfe269 DJ |
2437 | /* Look through the currently pushed targets. If none of them will |
2438 | be able to restart the currently running process, issue an error | |
2439 | message. */ | |
2440 | ||
2441 | void | |
2442 | target_require_runnable (void) | |
2443 | { | |
2444 | struct target_ops *t; | |
2445 | ||
2446 | for (t = target_stack; t != NULL; t = t->beneath) | |
2447 | { | |
2448 | /* If this target knows how to create a new program, then | |
2449 | assume we will still be able to after killing the current | |
2450 | one. Either killing and mourning will not pop T, or else | |
2451 | find_default_run_target will find it again. */ | |
2452 | if (t->to_create_inferior != NULL) | |
2453 | return; | |
2454 | ||
548740d6 | 2455 | /* Do not worry about targets at certain strata that can not |
8edfe269 DJ |
2456 | create inferiors. Assume they will be pushed again if |
2457 | necessary, and continue to the process_stratum. */ | |
85e747d2 | 2458 | if (t->to_stratum == thread_stratum |
548740d6 | 2459 | || t->to_stratum == record_stratum |
85e747d2 | 2460 | || t->to_stratum == arch_stratum) |
8edfe269 DJ |
2461 | continue; |
2462 | ||
3e43a32a MS |
2463 | error (_("The \"%s\" target does not support \"run\". " |
2464 | "Try \"help target\" or \"continue\"."), | |
8edfe269 DJ |
2465 | t->to_shortname); |
2466 | } | |
2467 | ||
2468 | /* This function is only called if the target is running. In that | |
2469 | case there should have been a process_stratum target and it | |
c378eb4e | 2470 | should either know how to create inferiors, or not... */ |
9b20d036 | 2471 | internal_error (__FILE__, __LINE__, _("No targets found")); |
8edfe269 DJ |
2472 | } |
2473 | ||
6a3cb8e8 PA |
2474 | /* Whether GDB is allowed to fall back to the default run target for |
2475 | "run", "attach", etc. when no target is connected yet. */ | |
2476 | static int auto_connect_native_target = 1; | |
2477 | ||
2478 | static void | |
2479 | show_auto_connect_native_target (struct ui_file *file, int from_tty, | |
2480 | struct cmd_list_element *c, const char *value) | |
2481 | { | |
2482 | fprintf_filtered (file, | |
2483 | _("Whether GDB may automatically connect to the " | |
2484 | "native target is %s.\n"), | |
2485 | value); | |
2486 | } | |
2487 | ||
c906108c SS |
2488 | /* Look through the list of possible targets for a target that can |
2489 | execute a run or attach command without any other data. This is | |
2490 | used to locate the default process stratum. | |
2491 | ||
5f667f2d PA |
2492 | If DO_MESG is not NULL, the result is always valid (error() is |
2493 | called for errors); else, return NULL on error. */ | |
c906108c SS |
2494 | |
2495 | static struct target_ops * | |
fba45db2 | 2496 | find_default_run_target (char *do_mesg) |
c906108c | 2497 | { |
c906108c | 2498 | struct target_ops *runable = NULL; |
c906108c | 2499 | |
6a3cb8e8 | 2500 | if (auto_connect_native_target) |
c906108c | 2501 | { |
89a1c21a | 2502 | struct target_ops *t; |
6a3cb8e8 | 2503 | int count = 0; |
89a1c21a | 2504 | int i; |
6a3cb8e8 | 2505 | |
89a1c21a | 2506 | for (i = 0; VEC_iterate (target_ops_p, target_structs, i, t); ++i) |
c906108c | 2507 | { |
89a1c21a | 2508 | if (t->to_can_run != delegate_can_run && target_can_run (t)) |
6a3cb8e8 | 2509 | { |
89a1c21a | 2510 | runable = t; |
6a3cb8e8 PA |
2511 | ++count; |
2512 | } | |
c906108c | 2513 | } |
6a3cb8e8 PA |
2514 | |
2515 | if (count != 1) | |
2516 | runable = NULL; | |
c906108c SS |
2517 | } |
2518 | ||
6a3cb8e8 | 2519 | if (runable == NULL) |
5f667f2d PA |
2520 | { |
2521 | if (do_mesg) | |
2522 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
2523 | else | |
2524 | return NULL; | |
2525 | } | |
c906108c SS |
2526 | |
2527 | return runable; | |
2528 | } | |
2529 | ||
b3ccfe11 | 2530 | /* See target.h. */ |
c906108c | 2531 | |
b3ccfe11 TT |
2532 | struct target_ops * |
2533 | find_attach_target (void) | |
c906108c SS |
2534 | { |
2535 | struct target_ops *t; | |
2536 | ||
b3ccfe11 TT |
2537 | /* If a target on the current stack can attach, use it. */ |
2538 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2539 | { | |
2540 | if (t->to_attach != NULL) | |
2541 | break; | |
2542 | } | |
c906108c | 2543 | |
b3ccfe11 TT |
2544 | /* Otherwise, use the default run target for attaching. */ |
2545 | if (t == NULL) | |
2546 | t = find_default_run_target ("attach"); | |
b84876c2 | 2547 | |
b3ccfe11 | 2548 | return t; |
b84876c2 PA |
2549 | } |
2550 | ||
b3ccfe11 | 2551 | /* See target.h. */ |
b84876c2 | 2552 | |
b3ccfe11 TT |
2553 | struct target_ops * |
2554 | find_run_target (void) | |
9908b566 VP |
2555 | { |
2556 | struct target_ops *t; | |
2557 | ||
b3ccfe11 TT |
2558 | /* If a target on the current stack can attach, use it. */ |
2559 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2560 | { | |
2561 | if (t->to_create_inferior != NULL) | |
2562 | break; | |
2563 | } | |
5d502164 | 2564 | |
b3ccfe11 TT |
2565 | /* Otherwise, use the default run target. */ |
2566 | if (t == NULL) | |
2567 | t = find_default_run_target ("run"); | |
9908b566 | 2568 | |
b3ccfe11 | 2569 | return t; |
9908b566 VP |
2570 | } |
2571 | ||
145b16a9 UW |
2572 | /* Implement the "info proc" command. */ |
2573 | ||
451b7c33 | 2574 | int |
7bc112c1 | 2575 | target_info_proc (const char *args, enum info_proc_what what) |
145b16a9 UW |
2576 | { |
2577 | struct target_ops *t; | |
2578 | ||
2579 | /* If we're already connected to something that can get us OS | |
2580 | related data, use it. Otherwise, try using the native | |
2581 | target. */ | |
2582 | if (current_target.to_stratum >= process_stratum) | |
2583 | t = current_target.beneath; | |
2584 | else | |
2585 | t = find_default_run_target (NULL); | |
2586 | ||
2587 | for (; t != NULL; t = t->beneath) | |
2588 | { | |
2589 | if (t->to_info_proc != NULL) | |
2590 | { | |
2591 | t->to_info_proc (t, args, what); | |
2592 | ||
2593 | if (targetdebug) | |
2594 | fprintf_unfiltered (gdb_stdlog, | |
2595 | "target_info_proc (\"%s\", %d)\n", args, what); | |
2596 | ||
451b7c33 | 2597 | return 1; |
145b16a9 UW |
2598 | } |
2599 | } | |
2600 | ||
451b7c33 | 2601 | return 0; |
145b16a9 UW |
2602 | } |
2603 | ||
03583c20 | 2604 | static int |
2bfc0540 | 2605 | find_default_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
2606 | { |
2607 | struct target_ops *t; | |
2608 | ||
2609 | t = find_default_run_target (NULL); | |
2610 | if (t && t->to_supports_disable_randomization) | |
2bfc0540 | 2611 | return (t->to_supports_disable_randomization) (t); |
03583c20 UW |
2612 | return 0; |
2613 | } | |
2614 | ||
2615 | int | |
2616 | target_supports_disable_randomization (void) | |
2617 | { | |
2618 | struct target_ops *t; | |
2619 | ||
2620 | for (t = ¤t_target; t != NULL; t = t->beneath) | |
2621 | if (t->to_supports_disable_randomization) | |
2bfc0540 | 2622 | return t->to_supports_disable_randomization (t); |
03583c20 UW |
2623 | |
2624 | return 0; | |
2625 | } | |
9908b566 | 2626 | |
07e059b5 VP |
2627 | char * |
2628 | target_get_osdata (const char *type) | |
2629 | { | |
07e059b5 VP |
2630 | struct target_ops *t; |
2631 | ||
739ef7fb PA |
2632 | /* If we're already connected to something that can get us OS |
2633 | related data, use it. Otherwise, try using the native | |
2634 | target. */ | |
2635 | if (current_target.to_stratum >= process_stratum) | |
6d097e65 | 2636 | t = current_target.beneath; |
739ef7fb PA |
2637 | else |
2638 | t = find_default_run_target ("get OS data"); | |
07e059b5 VP |
2639 | |
2640 | if (!t) | |
2641 | return NULL; | |
2642 | ||
6d097e65 | 2643 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
2644 | } |
2645 | ||
8eaff7cd TT |
2646 | static struct address_space * |
2647 | default_thread_address_space (struct target_ops *self, ptid_t ptid) | |
6c95b8df PA |
2648 | { |
2649 | struct inferior *inf; | |
6c95b8df PA |
2650 | |
2651 | /* Fall-back to the "main" address space of the inferior. */ | |
c9657e70 | 2652 | inf = find_inferior_ptid (ptid); |
6c95b8df PA |
2653 | |
2654 | if (inf == NULL || inf->aspace == NULL) | |
3e43a32a | 2655 | internal_error (__FILE__, __LINE__, |
9b20d036 MS |
2656 | _("Can't determine the current " |
2657 | "address space of thread %s\n"), | |
6c95b8df PA |
2658 | target_pid_to_str (ptid)); |
2659 | ||
2660 | return inf->aspace; | |
2661 | } | |
2662 | ||
8eaff7cd TT |
2663 | /* Determine the current address space of thread PTID. */ |
2664 | ||
2665 | struct address_space * | |
2666 | target_thread_address_space (ptid_t ptid) | |
2667 | { | |
2668 | struct address_space *aspace; | |
2669 | ||
2670 | aspace = current_target.to_thread_address_space (¤t_target, ptid); | |
2671 | gdb_assert (aspace != NULL); | |
2672 | ||
8eaff7cd TT |
2673 | return aspace; |
2674 | } | |
2675 | ||
7313baad UW |
2676 | |
2677 | /* Target file operations. */ | |
2678 | ||
2679 | static struct target_ops * | |
2680 | default_fileio_target (void) | |
2681 | { | |
2682 | /* If we're already connected to something that can perform | |
2683 | file I/O, use it. Otherwise, try using the native target. */ | |
2684 | if (current_target.to_stratum >= process_stratum) | |
2685 | return current_target.beneath; | |
2686 | else | |
2687 | return find_default_run_target ("file I/O"); | |
2688 | } | |
2689 | ||
2690 | /* Open FILENAME on the target, using FLAGS and MODE. Return a | |
2691 | target file descriptor, or -1 if an error occurs (and set | |
2692 | *TARGET_ERRNO). */ | |
2693 | int | |
2694 | target_fileio_open (const char *filename, int flags, int mode, | |
2695 | int *target_errno) | |
2696 | { | |
2697 | struct target_ops *t; | |
2698 | ||
2699 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2700 | { | |
2701 | if (t->to_fileio_open != NULL) | |
2702 | { | |
cd897586 | 2703 | int fd = t->to_fileio_open (t, filename, flags, mode, target_errno); |
7313baad UW |
2704 | |
2705 | if (targetdebug) | |
2706 | fprintf_unfiltered (gdb_stdlog, | |
2707 | "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n", | |
2708 | filename, flags, mode, | |
2709 | fd, fd != -1 ? 0 : *target_errno); | |
2710 | return fd; | |
2711 | } | |
2712 | } | |
2713 | ||
2714 | *target_errno = FILEIO_ENOSYS; | |
2715 | return -1; | |
2716 | } | |
2717 | ||
2718 | /* Write up to LEN bytes from WRITE_BUF to FD on the target. | |
2719 | Return the number of bytes written, or -1 if an error occurs | |
2720 | (and set *TARGET_ERRNO). */ | |
2721 | int | |
2722 | target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
2723 | ULONGEST offset, int *target_errno) | |
2724 | { | |
2725 | struct target_ops *t; | |
2726 | ||
2727 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2728 | { | |
2729 | if (t->to_fileio_pwrite != NULL) | |
2730 | { | |
0d866f62 | 2731 | int ret = t->to_fileio_pwrite (t, fd, write_buf, len, offset, |
7313baad UW |
2732 | target_errno); |
2733 | ||
2734 | if (targetdebug) | |
2735 | fprintf_unfiltered (gdb_stdlog, | |
a71b5a38 | 2736 | "target_fileio_pwrite (%d,...,%d,%s) " |
7313baad | 2737 | "= %d (%d)\n", |
a71b5a38 | 2738 | fd, len, pulongest (offset), |
7313baad UW |
2739 | ret, ret != -1 ? 0 : *target_errno); |
2740 | return ret; | |
2741 | } | |
2742 | } | |
2743 | ||
2744 | *target_errno = FILEIO_ENOSYS; | |
2745 | return -1; | |
2746 | } | |
2747 | ||
2748 | /* Read up to LEN bytes FD on the target into READ_BUF. | |
2749 | Return the number of bytes read, or -1 if an error occurs | |
2750 | (and set *TARGET_ERRNO). */ | |
2751 | int | |
2752 | target_fileio_pread (int fd, gdb_byte *read_buf, int len, | |
2753 | ULONGEST offset, int *target_errno) | |
2754 | { | |
2755 | struct target_ops *t; | |
2756 | ||
2757 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2758 | { | |
2759 | if (t->to_fileio_pread != NULL) | |
2760 | { | |
a3be983c | 2761 | int ret = t->to_fileio_pread (t, fd, read_buf, len, offset, |
7313baad UW |
2762 | target_errno); |
2763 | ||
2764 | if (targetdebug) | |
2765 | fprintf_unfiltered (gdb_stdlog, | |
a71b5a38 | 2766 | "target_fileio_pread (%d,...,%d,%s) " |
7313baad | 2767 | "= %d (%d)\n", |
a71b5a38 | 2768 | fd, len, pulongest (offset), |
7313baad UW |
2769 | ret, ret != -1 ? 0 : *target_errno); |
2770 | return ret; | |
2771 | } | |
2772 | } | |
2773 | ||
2774 | *target_errno = FILEIO_ENOSYS; | |
2775 | return -1; | |
2776 | } | |
2777 | ||
2778 | /* Close FD on the target. Return 0, or -1 if an error occurs | |
2779 | (and set *TARGET_ERRNO). */ | |
2780 | int | |
2781 | target_fileio_close (int fd, int *target_errno) | |
2782 | { | |
2783 | struct target_ops *t; | |
2784 | ||
2785 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2786 | { | |
2787 | if (t->to_fileio_close != NULL) | |
2788 | { | |
df39ea25 | 2789 | int ret = t->to_fileio_close (t, fd, target_errno); |
7313baad UW |
2790 | |
2791 | if (targetdebug) | |
2792 | fprintf_unfiltered (gdb_stdlog, | |
2793 | "target_fileio_close (%d) = %d (%d)\n", | |
2794 | fd, ret, ret != -1 ? 0 : *target_errno); | |
2795 | return ret; | |
2796 | } | |
2797 | } | |
2798 | ||
2799 | *target_errno = FILEIO_ENOSYS; | |
2800 | return -1; | |
2801 | } | |
2802 | ||
2803 | /* Unlink FILENAME on the target. Return 0, or -1 if an error | |
2804 | occurs (and set *TARGET_ERRNO). */ | |
2805 | int | |
2806 | target_fileio_unlink (const char *filename, int *target_errno) | |
2807 | { | |
2808 | struct target_ops *t; | |
2809 | ||
2810 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2811 | { | |
2812 | if (t->to_fileio_unlink != NULL) | |
2813 | { | |
dbbca37d | 2814 | int ret = t->to_fileio_unlink (t, filename, target_errno); |
7313baad UW |
2815 | |
2816 | if (targetdebug) | |
2817 | fprintf_unfiltered (gdb_stdlog, | |
2818 | "target_fileio_unlink (%s) = %d (%d)\n", | |
2819 | filename, ret, ret != -1 ? 0 : *target_errno); | |
2820 | return ret; | |
2821 | } | |
2822 | } | |
2823 | ||
2824 | *target_errno = FILEIO_ENOSYS; | |
2825 | return -1; | |
2826 | } | |
2827 | ||
b9e7b9c3 UW |
2828 | /* Read value of symbolic link FILENAME on the target. Return a |
2829 | null-terminated string allocated via xmalloc, or NULL if an error | |
2830 | occurs (and set *TARGET_ERRNO). */ | |
2831 | char * | |
2832 | target_fileio_readlink (const char *filename, int *target_errno) | |
2833 | { | |
2834 | struct target_ops *t; | |
2835 | ||
2836 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2837 | { | |
2838 | if (t->to_fileio_readlink != NULL) | |
2839 | { | |
fab5aa7c | 2840 | char *ret = t->to_fileio_readlink (t, filename, target_errno); |
b9e7b9c3 UW |
2841 | |
2842 | if (targetdebug) | |
2843 | fprintf_unfiltered (gdb_stdlog, | |
2844 | "target_fileio_readlink (%s) = %s (%d)\n", | |
2845 | filename, ret? ret : "(nil)", | |
2846 | ret? 0 : *target_errno); | |
2847 | return ret; | |
2848 | } | |
2849 | } | |
2850 | ||
2851 | *target_errno = FILEIO_ENOSYS; | |
2852 | return NULL; | |
2853 | } | |
2854 | ||
7313baad UW |
2855 | static void |
2856 | target_fileio_close_cleanup (void *opaque) | |
2857 | { | |
2858 | int fd = *(int *) opaque; | |
2859 | int target_errno; | |
2860 | ||
2861 | target_fileio_close (fd, &target_errno); | |
2862 | } | |
2863 | ||
2864 | /* Read target file FILENAME. Store the result in *BUF_P and | |
2865 | return the size of the transferred data. PADDING additional bytes are | |
2866 | available in *BUF_P. This is a helper function for | |
2867 | target_fileio_read_alloc; see the declaration of that function for more | |
2868 | information. */ | |
2869 | ||
2870 | static LONGEST | |
2871 | target_fileio_read_alloc_1 (const char *filename, | |
2872 | gdb_byte **buf_p, int padding) | |
2873 | { | |
2874 | struct cleanup *close_cleanup; | |
2875 | size_t buf_alloc, buf_pos; | |
2876 | gdb_byte *buf; | |
2877 | LONGEST n; | |
2878 | int fd; | |
2879 | int target_errno; | |
2880 | ||
2881 | fd = target_fileio_open (filename, FILEIO_O_RDONLY, 0700, &target_errno); | |
2882 | if (fd == -1) | |
2883 | return -1; | |
2884 | ||
2885 | close_cleanup = make_cleanup (target_fileio_close_cleanup, &fd); | |
2886 | ||
2887 | /* Start by reading up to 4K at a time. The target will throttle | |
2888 | this number down if necessary. */ | |
2889 | buf_alloc = 4096; | |
2890 | buf = xmalloc (buf_alloc); | |
2891 | buf_pos = 0; | |
2892 | while (1) | |
2893 | { | |
2894 | n = target_fileio_pread (fd, &buf[buf_pos], | |
2895 | buf_alloc - buf_pos - padding, buf_pos, | |
2896 | &target_errno); | |
2897 | if (n < 0) | |
2898 | { | |
2899 | /* An error occurred. */ | |
2900 | do_cleanups (close_cleanup); | |
2901 | xfree (buf); | |
2902 | return -1; | |
2903 | } | |
2904 | else if (n == 0) | |
2905 | { | |
2906 | /* Read all there was. */ | |
2907 | do_cleanups (close_cleanup); | |
2908 | if (buf_pos == 0) | |
2909 | xfree (buf); | |
2910 | else | |
2911 | *buf_p = buf; | |
2912 | return buf_pos; | |
2913 | } | |
2914 | ||
2915 | buf_pos += n; | |
2916 | ||
2917 | /* If the buffer is filling up, expand it. */ | |
2918 | if (buf_alloc < buf_pos * 2) | |
2919 | { | |
2920 | buf_alloc *= 2; | |
2921 | buf = xrealloc (buf, buf_alloc); | |
2922 | } | |
2923 | ||
2924 | QUIT; | |
2925 | } | |
2926 | } | |
2927 | ||
2928 | /* Read target file FILENAME. Store the result in *BUF_P and return | |
2929 | the size of the transferred data. See the declaration in "target.h" | |
2930 | function for more information about the return value. */ | |
2931 | ||
2932 | LONGEST | |
2933 | target_fileio_read_alloc (const char *filename, gdb_byte **buf_p) | |
2934 | { | |
2935 | return target_fileio_read_alloc_1 (filename, buf_p, 0); | |
2936 | } | |
2937 | ||
2938 | /* Read target file FILENAME. The result is NUL-terminated and | |
2939 | returned as a string, allocated using xmalloc. If an error occurs | |
2940 | or the transfer is unsupported, NULL is returned. Empty objects | |
2941 | are returned as allocated but empty strings. A warning is issued | |
2942 | if the result contains any embedded NUL bytes. */ | |
2943 | ||
2944 | char * | |
2945 | target_fileio_read_stralloc (const char *filename) | |
2946 | { | |
39086a0e PA |
2947 | gdb_byte *buffer; |
2948 | char *bufstr; | |
7313baad UW |
2949 | LONGEST i, transferred; |
2950 | ||
39086a0e PA |
2951 | transferred = target_fileio_read_alloc_1 (filename, &buffer, 1); |
2952 | bufstr = (char *) buffer; | |
7313baad UW |
2953 | |
2954 | if (transferred < 0) | |
2955 | return NULL; | |
2956 | ||
2957 | if (transferred == 0) | |
2958 | return xstrdup (""); | |
2959 | ||
39086a0e | 2960 | bufstr[transferred] = 0; |
7313baad UW |
2961 | |
2962 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
39086a0e PA |
2963 | for (i = strlen (bufstr); i < transferred; i++) |
2964 | if (bufstr[i] != 0) | |
7313baad UW |
2965 | { |
2966 | warning (_("target file %s " | |
2967 | "contained unexpected null characters"), | |
2968 | filename); | |
2969 | break; | |
2970 | } | |
2971 | ||
39086a0e | 2972 | return bufstr; |
7313baad UW |
2973 | } |
2974 | ||
2975 | ||
e0d24f8d | 2976 | static int |
31568a15 TT |
2977 | default_region_ok_for_hw_watchpoint (struct target_ops *self, |
2978 | CORE_ADDR addr, int len) | |
e0d24f8d | 2979 | { |
f5656ead | 2980 | return (len <= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT); |
ccaa32c7 GS |
2981 | } |
2982 | ||
5009afc5 AS |
2983 | static int |
2984 | default_watchpoint_addr_within_range (struct target_ops *target, | |
2985 | CORE_ADDR addr, | |
2986 | CORE_ADDR start, int length) | |
2987 | { | |
2988 | return addr >= start && addr < start + length; | |
2989 | } | |
2990 | ||
c2250ad1 UW |
2991 | static struct gdbarch * |
2992 | default_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
2993 | { | |
f5656ead | 2994 | return target_gdbarch (); |
c2250ad1 UW |
2995 | } |
2996 | ||
c906108c | 2997 | static int |
555bbdeb TT |
2998 | return_zero (struct target_ops *ignore) |
2999 | { | |
3000 | return 0; | |
3001 | } | |
3002 | ||
3003 | static int | |
3004 | return_zero_has_execution (struct target_ops *ignore, ptid_t ignore2) | |
c906108c SS |
3005 | { |
3006 | return 0; | |
3007 | } | |
3008 | ||
ed9a39eb JM |
3009 | /* |
3010 | * Find the next target down the stack from the specified target. | |
3011 | */ | |
3012 | ||
3013 | struct target_ops * | |
fba45db2 | 3014 | find_target_beneath (struct target_ops *t) |
ed9a39eb | 3015 | { |
258b763a | 3016 | return t->beneath; |
ed9a39eb JM |
3017 | } |
3018 | ||
8b06beed TT |
3019 | /* See target.h. */ |
3020 | ||
3021 | struct target_ops * | |
3022 | find_target_at (enum strata stratum) | |
3023 | { | |
3024 | struct target_ops *t; | |
3025 | ||
3026 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3027 | if (t->to_stratum == stratum) | |
3028 | return t; | |
3029 | ||
3030 | return NULL; | |
3031 | } | |
3032 | ||
c906108c SS |
3033 | \f |
3034 | /* The inferior process has died. Long live the inferior! */ | |
3035 | ||
3036 | void | |
fba45db2 | 3037 | generic_mourn_inferior (void) |
c906108c | 3038 | { |
7f9f62ba | 3039 | ptid_t ptid; |
c906108c | 3040 | |
7f9f62ba | 3041 | ptid = inferior_ptid; |
39f77062 | 3042 | inferior_ptid = null_ptid; |
7f9f62ba | 3043 | |
f59f708a PA |
3044 | /* Mark breakpoints uninserted in case something tries to delete a |
3045 | breakpoint while we delete the inferior's threads (which would | |
3046 | fail, since the inferior is long gone). */ | |
3047 | mark_breakpoints_out (); | |
3048 | ||
7f9f62ba PA |
3049 | if (!ptid_equal (ptid, null_ptid)) |
3050 | { | |
3051 | int pid = ptid_get_pid (ptid); | |
6c95b8df | 3052 | exit_inferior (pid); |
7f9f62ba PA |
3053 | } |
3054 | ||
f59f708a PA |
3055 | /* Note this wipes step-resume breakpoints, so needs to be done |
3056 | after exit_inferior, which ends up referencing the step-resume | |
3057 | breakpoints through clear_thread_inferior_resources. */ | |
c906108c | 3058 | breakpoint_init_inferior (inf_exited); |
f59f708a | 3059 | |
c906108c SS |
3060 | registers_changed (); |
3061 | ||
c906108c SS |
3062 | reopen_exec_file (); |
3063 | reinit_frame_cache (); | |
3064 | ||
9a4105ab AC |
3065 | if (deprecated_detach_hook) |
3066 | deprecated_detach_hook (); | |
c906108c SS |
3067 | } |
3068 | \f | |
fd0a2a6f MK |
3069 | /* Convert a normal process ID to a string. Returns the string in a |
3070 | static buffer. */ | |
c906108c SS |
3071 | |
3072 | char * | |
39f77062 | 3073 | normal_pid_to_str (ptid_t ptid) |
c906108c | 3074 | { |
fd0a2a6f | 3075 | static char buf[32]; |
c906108c | 3076 | |
5fff8fc0 | 3077 | xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid)); |
c906108c SS |
3078 | return buf; |
3079 | } | |
3080 | ||
2c0b251b | 3081 | static char * |
770234d3 | 3082 | default_pid_to_str (struct target_ops *ops, ptid_t ptid) |
117de6a9 PA |
3083 | { |
3084 | return normal_pid_to_str (ptid); | |
3085 | } | |
3086 | ||
9b4eba8e HZ |
3087 | /* Error-catcher for target_find_memory_regions. */ |
3088 | static int | |
2e73927c TT |
3089 | dummy_find_memory_regions (struct target_ops *self, |
3090 | find_memory_region_ftype ignore1, void *ignore2) | |
be4d1333 | 3091 | { |
9b4eba8e | 3092 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3093 | return 0; |
3094 | } | |
3095 | ||
9b4eba8e HZ |
3096 | /* Error-catcher for target_make_corefile_notes. */ |
3097 | static char * | |
fc6691b2 TT |
3098 | dummy_make_corefile_notes (struct target_ops *self, |
3099 | bfd *ignore1, int *ignore2) | |
be4d1333 | 3100 | { |
9b4eba8e | 3101 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3102 | return NULL; |
3103 | } | |
3104 | ||
c906108c SS |
3105 | /* Set up the handful of non-empty slots needed by the dummy target |
3106 | vector. */ | |
3107 | ||
3108 | static void | |
fba45db2 | 3109 | init_dummy_target (void) |
c906108c SS |
3110 | { |
3111 | dummy_target.to_shortname = "None"; | |
3112 | dummy_target.to_longname = "None"; | |
3113 | dummy_target.to_doc = ""; | |
03583c20 UW |
3114 | dummy_target.to_supports_disable_randomization |
3115 | = find_default_supports_disable_randomization; | |
c906108c | 3116 | dummy_target.to_stratum = dummy_stratum; |
555bbdeb TT |
3117 | dummy_target.to_has_all_memory = return_zero; |
3118 | dummy_target.to_has_memory = return_zero; | |
3119 | dummy_target.to_has_stack = return_zero; | |
3120 | dummy_target.to_has_registers = return_zero; | |
3121 | dummy_target.to_has_execution = return_zero_has_execution; | |
c906108c | 3122 | dummy_target.to_magic = OPS_MAGIC; |
1101cb7b TT |
3123 | |
3124 | install_dummy_methods (&dummy_target); | |
c906108c | 3125 | } |
c906108c | 3126 | \f |
c906108c | 3127 | |
f1c07ab0 | 3128 | void |
460014f5 | 3129 | target_close (struct target_ops *targ) |
f1c07ab0 | 3130 | { |
7fdc1521 TT |
3131 | gdb_assert (!target_is_pushed (targ)); |
3132 | ||
f1c07ab0 | 3133 | if (targ->to_xclose != NULL) |
460014f5 | 3134 | targ->to_xclose (targ); |
f1c07ab0 | 3135 | else if (targ->to_close != NULL) |
de90e03d | 3136 | targ->to_close (targ); |
947b8855 PA |
3137 | |
3138 | if (targetdebug) | |
460014f5 | 3139 | fprintf_unfiltered (gdb_stdlog, "target_close ()\n"); |
f1c07ab0 AC |
3140 | } |
3141 | ||
28439f5e PA |
3142 | int |
3143 | target_thread_alive (ptid_t ptid) | |
c906108c | 3144 | { |
a7068b60 | 3145 | return current_target.to_thread_alive (¤t_target, ptid); |
28439f5e PA |
3146 | } |
3147 | ||
3148 | void | |
e8032dde | 3149 | target_update_thread_list (void) |
28439f5e | 3150 | { |
e8032dde | 3151 | current_target.to_update_thread_list (¤t_target); |
c906108c SS |
3152 | } |
3153 | ||
d914c394 SS |
3154 | void |
3155 | target_stop (ptid_t ptid) | |
3156 | { | |
3157 | if (!may_stop) | |
3158 | { | |
3159 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3160 | return; | |
3161 | } | |
3162 | ||
1eab8a48 | 3163 | (*current_target.to_stop) (¤t_target, ptid); |
d914c394 SS |
3164 | } |
3165 | ||
f8c1d06b GB |
3166 | /* See target/target.h. */ |
3167 | ||
3168 | void | |
03f4463b | 3169 | target_stop_and_wait (ptid_t ptid) |
f8c1d06b GB |
3170 | { |
3171 | struct target_waitstatus status; | |
3172 | int was_non_stop = non_stop; | |
3173 | ||
3174 | non_stop = 1; | |
3175 | target_stop (ptid); | |
3176 | ||
3177 | memset (&status, 0, sizeof (status)); | |
3178 | target_wait (ptid, &status, 0); | |
3179 | ||
3180 | non_stop = was_non_stop; | |
3181 | } | |
3182 | ||
3183 | /* See target/target.h. */ | |
3184 | ||
3185 | void | |
03f4463b | 3186 | target_continue_no_signal (ptid_t ptid) |
f8c1d06b GB |
3187 | { |
3188 | target_resume (ptid, 0, GDB_SIGNAL_0); | |
3189 | } | |
3190 | ||
09826ec5 PA |
3191 | /* Concatenate ELEM to LIST, a comma separate list, and return the |
3192 | result. The LIST incoming argument is released. */ | |
3193 | ||
3194 | static char * | |
3195 | str_comma_list_concat_elem (char *list, const char *elem) | |
3196 | { | |
3197 | if (list == NULL) | |
3198 | return xstrdup (elem); | |
3199 | else | |
3200 | return reconcat (list, list, ", ", elem, (char *) NULL); | |
3201 | } | |
3202 | ||
3203 | /* Helper for target_options_to_string. If OPT is present in | |
3204 | TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET. | |
3205 | Returns the new resulting string. OPT is removed from | |
3206 | TARGET_OPTIONS. */ | |
3207 | ||
3208 | static char * | |
3209 | do_option (int *target_options, char *ret, | |
3210 | int opt, char *opt_str) | |
3211 | { | |
3212 | if ((*target_options & opt) != 0) | |
3213 | { | |
3214 | ret = str_comma_list_concat_elem (ret, opt_str); | |
3215 | *target_options &= ~opt; | |
3216 | } | |
3217 | ||
3218 | return ret; | |
3219 | } | |
3220 | ||
3221 | char * | |
3222 | target_options_to_string (int target_options) | |
3223 | { | |
3224 | char *ret = NULL; | |
3225 | ||
3226 | #define DO_TARG_OPTION(OPT) \ | |
3227 | ret = do_option (&target_options, ret, OPT, #OPT) | |
3228 | ||
3229 | DO_TARG_OPTION (TARGET_WNOHANG); | |
3230 | ||
3231 | if (target_options != 0) | |
3232 | ret = str_comma_list_concat_elem (ret, "unknown???"); | |
3233 | ||
3234 | if (ret == NULL) | |
3235 | ret = xstrdup (""); | |
3236 | return ret; | |
3237 | } | |
3238 | ||
bf0c5130 | 3239 | static void |
56be3814 UW |
3240 | debug_print_register (const char * func, |
3241 | struct regcache *regcache, int regno) | |
bf0c5130 | 3242 | { |
f8d29908 | 3243 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
5d502164 | 3244 | |
bf0c5130 | 3245 | fprintf_unfiltered (gdb_stdlog, "%s ", func); |
f8d29908 | 3246 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) |
f8d29908 UW |
3247 | && gdbarch_register_name (gdbarch, regno) != NULL |
3248 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') | |
3249 | fprintf_unfiltered (gdb_stdlog, "(%s)", | |
3250 | gdbarch_register_name (gdbarch, regno)); | |
bf0c5130 AC |
3251 | else |
3252 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
0ff58721 | 3253 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) |
bf0c5130 | 3254 | { |
e17a4113 | 3255 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
f8d29908 | 3256 | int i, size = register_size (gdbarch, regno); |
e362b510 | 3257 | gdb_byte buf[MAX_REGISTER_SIZE]; |
5d502164 | 3258 | |
0ff58721 | 3259 | regcache_raw_collect (regcache, regno, buf); |
bf0c5130 | 3260 | fprintf_unfiltered (gdb_stdlog, " = "); |
81c4a259 | 3261 | for (i = 0; i < size; i++) |
bf0c5130 AC |
3262 | { |
3263 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
3264 | } | |
81c4a259 | 3265 | if (size <= sizeof (LONGEST)) |
bf0c5130 | 3266 | { |
e17a4113 | 3267 | ULONGEST val = extract_unsigned_integer (buf, size, byte_order); |
5d502164 | 3268 | |
0b1553bc UW |
3269 | fprintf_unfiltered (gdb_stdlog, " %s %s", |
3270 | core_addr_to_string_nz (val), plongest (val)); | |
bf0c5130 AC |
3271 | } |
3272 | } | |
3273 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
3274 | } | |
3275 | ||
28439f5e PA |
3276 | void |
3277 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 3278 | { |
ad5989bd TT |
3279 | current_target.to_fetch_registers (¤t_target, regcache, regno); |
3280 | if (targetdebug) | |
3281 | debug_print_register ("target_fetch_registers", regcache, regno); | |
c906108c SS |
3282 | } |
3283 | ||
28439f5e PA |
3284 | void |
3285 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 3286 | { |
28439f5e | 3287 | struct target_ops *t; |
5d502164 | 3288 | |
d914c394 SS |
3289 | if (!may_write_registers) |
3290 | error (_("Writing to registers is not allowed (regno %d)"), regno); | |
3291 | ||
6b84065d TT |
3292 | current_target.to_store_registers (¤t_target, regcache, regno); |
3293 | if (targetdebug) | |
28439f5e | 3294 | { |
6b84065d | 3295 | debug_print_register ("target_store_registers", regcache, regno); |
28439f5e | 3296 | } |
c906108c SS |
3297 | } |
3298 | ||
dc146f7c VP |
3299 | int |
3300 | target_core_of_thread (ptid_t ptid) | |
3301 | { | |
a7068b60 | 3302 | return current_target.to_core_of_thread (¤t_target, ptid); |
dc146f7c VP |
3303 | } |
3304 | ||
936d2992 PA |
3305 | int |
3306 | simple_verify_memory (struct target_ops *ops, | |
3307 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
3308 | { | |
3309 | LONGEST total_xfered = 0; | |
3310 | ||
3311 | while (total_xfered < size) | |
3312 | { | |
3313 | ULONGEST xfered_len; | |
3314 | enum target_xfer_status status; | |
3315 | gdb_byte buf[1024]; | |
3316 | ULONGEST howmuch = min (sizeof (buf), size - total_xfered); | |
3317 | ||
3318 | status = target_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
3319 | buf, NULL, lma + total_xfered, howmuch, | |
3320 | &xfered_len); | |
3321 | if (status == TARGET_XFER_OK | |
3322 | && memcmp (data + total_xfered, buf, xfered_len) == 0) | |
3323 | { | |
3324 | total_xfered += xfered_len; | |
3325 | QUIT; | |
3326 | } | |
3327 | else | |
3328 | return 0; | |
3329 | } | |
3330 | return 1; | |
3331 | } | |
3332 | ||
3333 | /* Default implementation of memory verification. */ | |
3334 | ||
3335 | static int | |
3336 | default_verify_memory (struct target_ops *self, | |
3337 | const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3338 | { | |
3339 | /* Start over from the top of the target stack. */ | |
3340 | return simple_verify_memory (current_target.beneath, | |
3341 | data, memaddr, size); | |
3342 | } | |
3343 | ||
4a5e7a5b PA |
3344 | int |
3345 | target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3346 | { | |
a7068b60 TT |
3347 | return current_target.to_verify_memory (¤t_target, |
3348 | data, memaddr, size); | |
4a5e7a5b PA |
3349 | } |
3350 | ||
9c06b0b4 TJB |
3351 | /* The documentation for this function is in its prototype declaration in |
3352 | target.h. */ | |
3353 | ||
3354 | int | |
3355 | target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
3356 | { | |
a7068b60 TT |
3357 | return current_target.to_insert_mask_watchpoint (¤t_target, |
3358 | addr, mask, rw); | |
9c06b0b4 TJB |
3359 | } |
3360 | ||
3361 | /* The documentation for this function is in its prototype declaration in | |
3362 | target.h. */ | |
3363 | ||
3364 | int | |
3365 | target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
3366 | { | |
a7068b60 TT |
3367 | return current_target.to_remove_mask_watchpoint (¤t_target, |
3368 | addr, mask, rw); | |
9c06b0b4 TJB |
3369 | } |
3370 | ||
3371 | /* The documentation for this function is in its prototype declaration | |
3372 | in target.h. */ | |
3373 | ||
3374 | int | |
3375 | target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask) | |
3376 | { | |
6c7e5e5c TT |
3377 | return current_target.to_masked_watch_num_registers (¤t_target, |
3378 | addr, mask); | |
9c06b0b4 TJB |
3379 | } |
3380 | ||
f1310107 TJB |
3381 | /* The documentation for this function is in its prototype declaration |
3382 | in target.h. */ | |
3383 | ||
3384 | int | |
3385 | target_ranged_break_num_registers (void) | |
3386 | { | |
a134316b | 3387 | return current_target.to_ranged_break_num_registers (¤t_target); |
f1310107 TJB |
3388 | } |
3389 | ||
02d27625 MM |
3390 | /* See target.h. */ |
3391 | ||
043c3577 MM |
3392 | int |
3393 | target_supports_btrace (enum btrace_format format) | |
3394 | { | |
3395 | return current_target.to_supports_btrace (¤t_target, format); | |
3396 | } | |
3397 | ||
3398 | /* See target.h. */ | |
3399 | ||
02d27625 MM |
3400 | struct btrace_target_info * |
3401 | target_enable_btrace (ptid_t ptid) | |
3402 | { | |
6dc7fcf4 | 3403 | return current_target.to_enable_btrace (¤t_target, ptid); |
02d27625 MM |
3404 | } |
3405 | ||
3406 | /* See target.h. */ | |
3407 | ||
3408 | void | |
3409 | target_disable_btrace (struct btrace_target_info *btinfo) | |
3410 | { | |
8dc292d3 | 3411 | current_target.to_disable_btrace (¤t_target, btinfo); |
02d27625 MM |
3412 | } |
3413 | ||
3414 | /* See target.h. */ | |
3415 | ||
3416 | void | |
3417 | target_teardown_btrace (struct btrace_target_info *btinfo) | |
3418 | { | |
9ace480d | 3419 | current_target.to_teardown_btrace (¤t_target, btinfo); |
02d27625 MM |
3420 | } |
3421 | ||
3422 | /* See target.h. */ | |
3423 | ||
969c39fb | 3424 | enum btrace_error |
734b0e4b | 3425 | target_read_btrace (struct btrace_data *btrace, |
969c39fb | 3426 | struct btrace_target_info *btinfo, |
02d27625 MM |
3427 | enum btrace_read_type type) |
3428 | { | |
eb5b20d4 | 3429 | return current_target.to_read_btrace (¤t_target, btrace, btinfo, type); |
02d27625 MM |
3430 | } |
3431 | ||
d02ed0bb MM |
3432 | /* See target.h. */ |
3433 | ||
7c1687a9 MM |
3434 | void |
3435 | target_stop_recording (void) | |
3436 | { | |
ee97f592 | 3437 | current_target.to_stop_recording (¤t_target); |
7c1687a9 MM |
3438 | } |
3439 | ||
3440 | /* See target.h. */ | |
3441 | ||
d02ed0bb | 3442 | void |
85e1311a | 3443 | target_save_record (const char *filename) |
d02ed0bb | 3444 | { |
f09e2107 | 3445 | current_target.to_save_record (¤t_target, filename); |
d02ed0bb MM |
3446 | } |
3447 | ||
3448 | /* See target.h. */ | |
3449 | ||
3450 | int | |
3451 | target_supports_delete_record (void) | |
3452 | { | |
3453 | struct target_ops *t; | |
3454 | ||
3455 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
b0ed115f TT |
3456 | if (t->to_delete_record != delegate_delete_record |
3457 | && t->to_delete_record != tdefault_delete_record) | |
d02ed0bb MM |
3458 | return 1; |
3459 | ||
3460 | return 0; | |
3461 | } | |
3462 | ||
3463 | /* See target.h. */ | |
3464 | ||
3465 | void | |
3466 | target_delete_record (void) | |
3467 | { | |
07366925 | 3468 | current_target.to_delete_record (¤t_target); |
d02ed0bb MM |
3469 | } |
3470 | ||
3471 | /* See target.h. */ | |
3472 | ||
3473 | int | |
3474 | target_record_is_replaying (void) | |
3475 | { | |
dd2e9d25 | 3476 | return current_target.to_record_is_replaying (¤t_target); |
d02ed0bb MM |
3477 | } |
3478 | ||
3479 | /* See target.h. */ | |
3480 | ||
3481 | void | |
3482 | target_goto_record_begin (void) | |
3483 | { | |
671e76cc | 3484 | current_target.to_goto_record_begin (¤t_target); |
d02ed0bb MM |
3485 | } |
3486 | ||
3487 | /* See target.h. */ | |
3488 | ||
3489 | void | |
3490 | target_goto_record_end (void) | |
3491 | { | |
e9179bb3 | 3492 | current_target.to_goto_record_end (¤t_target); |
d02ed0bb MM |
3493 | } |
3494 | ||
3495 | /* See target.h. */ | |
3496 | ||
3497 | void | |
3498 | target_goto_record (ULONGEST insn) | |
3499 | { | |
05969c84 | 3500 | current_target.to_goto_record (¤t_target, insn); |
d02ed0bb MM |
3501 | } |
3502 | ||
67c86d06 MM |
3503 | /* See target.h. */ |
3504 | ||
3505 | void | |
3506 | target_insn_history (int size, int flags) | |
3507 | { | |
3679abfa | 3508 | current_target.to_insn_history (¤t_target, size, flags); |
67c86d06 MM |
3509 | } |
3510 | ||
3511 | /* See target.h. */ | |
3512 | ||
3513 | void | |
3514 | target_insn_history_from (ULONGEST from, int size, int flags) | |
3515 | { | |
8444ab58 | 3516 | current_target.to_insn_history_from (¤t_target, from, size, flags); |
67c86d06 MM |
3517 | } |
3518 | ||
3519 | /* See target.h. */ | |
3520 | ||
3521 | void | |
3522 | target_insn_history_range (ULONGEST begin, ULONGEST end, int flags) | |
3523 | { | |
c29302cc | 3524 | current_target.to_insn_history_range (¤t_target, begin, end, flags); |
67c86d06 MM |
3525 | } |
3526 | ||
15984c13 MM |
3527 | /* See target.h. */ |
3528 | ||
3529 | void | |
3530 | target_call_history (int size, int flags) | |
3531 | { | |
170049d4 | 3532 | current_target.to_call_history (¤t_target, size, flags); |
15984c13 MM |
3533 | } |
3534 | ||
3535 | /* See target.h. */ | |
3536 | ||
3537 | void | |
3538 | target_call_history_from (ULONGEST begin, int size, int flags) | |
3539 | { | |
16fc27d6 | 3540 | current_target.to_call_history_from (¤t_target, begin, size, flags); |
15984c13 MM |
3541 | } |
3542 | ||
3543 | /* See target.h. */ | |
3544 | ||
3545 | void | |
3546 | target_call_history_range (ULONGEST begin, ULONGEST end, int flags) | |
3547 | { | |
115d9817 | 3548 | current_target.to_call_history_range (¤t_target, begin, end, flags); |
15984c13 MM |
3549 | } |
3550 | ||
ea001bdc MM |
3551 | /* See target.h. */ |
3552 | ||
3553 | const struct frame_unwind * | |
3554 | target_get_unwinder (void) | |
3555 | { | |
ac01945b | 3556 | return current_target.to_get_unwinder (¤t_target); |
ea001bdc MM |
3557 | } |
3558 | ||
3559 | /* See target.h. */ | |
3560 | ||
3561 | const struct frame_unwind * | |
3562 | target_get_tailcall_unwinder (void) | |
3563 | { | |
ac01945b | 3564 | return current_target.to_get_tailcall_unwinder (¤t_target); |
ea001bdc MM |
3565 | } |
3566 | ||
c0eca49f | 3567 | /* Default implementation of to_decr_pc_after_break. */ |
118e6252 | 3568 | |
c0eca49f TT |
3569 | static CORE_ADDR |
3570 | default_target_decr_pc_after_break (struct target_ops *ops, | |
118e6252 MM |
3571 | struct gdbarch *gdbarch) |
3572 | { | |
118e6252 MM |
3573 | return gdbarch_decr_pc_after_break (gdbarch); |
3574 | } | |
3575 | ||
3576 | /* See target.h. */ | |
3577 | ||
3578 | CORE_ADDR | |
3579 | target_decr_pc_after_break (struct gdbarch *gdbarch) | |
3580 | { | |
c0eca49f | 3581 | return current_target.to_decr_pc_after_break (¤t_target, gdbarch); |
118e6252 MM |
3582 | } |
3583 | ||
5fff78c4 MM |
3584 | /* See target.h. */ |
3585 | ||
3586 | void | |
3587 | target_prepare_to_generate_core (void) | |
3588 | { | |
3589 | current_target.to_prepare_to_generate_core (¤t_target); | |
3590 | } | |
3591 | ||
3592 | /* See target.h. */ | |
3593 | ||
3594 | void | |
3595 | target_done_generating_core (void) | |
3596 | { | |
3597 | current_target.to_done_generating_core (¤t_target); | |
3598 | } | |
3599 | ||
c906108c | 3600 | static void |
fba45db2 | 3601 | setup_target_debug (void) |
c906108c SS |
3602 | { |
3603 | memcpy (&debug_target, ¤t_target, sizeof debug_target); | |
3604 | ||
a7068b60 | 3605 | init_debug_target (¤t_target); |
c906108c | 3606 | } |
c906108c | 3607 | \f |
c5aa993b JM |
3608 | |
3609 | static char targ_desc[] = | |
3e43a32a MS |
3610 | "Names of targets and files being debugged.\nShows the entire \ |
3611 | stack of targets currently in use (including the exec-file,\n\ | |
c906108c SS |
3612 | core-file, and process, if any), as well as the symbol file name."; |
3613 | ||
a53f3625 | 3614 | static void |
a30bf1f1 TT |
3615 | default_rcmd (struct target_ops *self, const char *command, |
3616 | struct ui_file *output) | |
a53f3625 TT |
3617 | { |
3618 | error (_("\"monitor\" command not supported by this target.")); | |
3619 | } | |
3620 | ||
96baa820 JM |
3621 | static void |
3622 | do_monitor_command (char *cmd, | |
3623 | int from_tty) | |
3624 | { | |
96baa820 JM |
3625 | target_rcmd (cmd, gdb_stdtarg); |
3626 | } | |
3627 | ||
87680a14 JB |
3628 | /* Print the name of each layers of our target stack. */ |
3629 | ||
3630 | static void | |
3631 | maintenance_print_target_stack (char *cmd, int from_tty) | |
3632 | { | |
3633 | struct target_ops *t; | |
3634 | ||
3635 | printf_filtered (_("The current target stack is:\n")); | |
3636 | ||
3637 | for (t = target_stack; t != NULL; t = t->beneath) | |
3638 | { | |
3639 | printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname); | |
3640 | } | |
3641 | } | |
3642 | ||
329ea579 PA |
3643 | /* Controls if targets can report that they can/are async. This is |
3644 | just for maintainers to use when debugging gdb. */ | |
3645 | int target_async_permitted = 1; | |
c6ebd6cf VP |
3646 | |
3647 | /* The set command writes to this variable. If the inferior is | |
b5419e49 | 3648 | executing, target_async_permitted is *not* updated. */ |
329ea579 | 3649 | static int target_async_permitted_1 = 1; |
c6ebd6cf VP |
3650 | |
3651 | static void | |
329ea579 PA |
3652 | maint_set_target_async_command (char *args, int from_tty, |
3653 | struct cmd_list_element *c) | |
c6ebd6cf | 3654 | { |
c35b1492 | 3655 | if (have_live_inferiors ()) |
c6ebd6cf VP |
3656 | { |
3657 | target_async_permitted_1 = target_async_permitted; | |
3658 | error (_("Cannot change this setting while the inferior is running.")); | |
3659 | } | |
3660 | ||
3661 | target_async_permitted = target_async_permitted_1; | |
3662 | } | |
3663 | ||
3664 | static void | |
329ea579 PA |
3665 | maint_show_target_async_command (struct ui_file *file, int from_tty, |
3666 | struct cmd_list_element *c, | |
3667 | const char *value) | |
c6ebd6cf | 3668 | { |
3e43a32a MS |
3669 | fprintf_filtered (file, |
3670 | _("Controlling the inferior in " | |
3671 | "asynchronous mode is %s.\n"), value); | |
c6ebd6cf VP |
3672 | } |
3673 | ||
d914c394 SS |
3674 | /* Temporary copies of permission settings. */ |
3675 | ||
3676 | static int may_write_registers_1 = 1; | |
3677 | static int may_write_memory_1 = 1; | |
3678 | static int may_insert_breakpoints_1 = 1; | |
3679 | static int may_insert_tracepoints_1 = 1; | |
3680 | static int may_insert_fast_tracepoints_1 = 1; | |
3681 | static int may_stop_1 = 1; | |
3682 | ||
3683 | /* Make the user-set values match the real values again. */ | |
3684 | ||
3685 | void | |
3686 | update_target_permissions (void) | |
3687 | { | |
3688 | may_write_registers_1 = may_write_registers; | |
3689 | may_write_memory_1 = may_write_memory; | |
3690 | may_insert_breakpoints_1 = may_insert_breakpoints; | |
3691 | may_insert_tracepoints_1 = may_insert_tracepoints; | |
3692 | may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints; | |
3693 | may_stop_1 = may_stop; | |
3694 | } | |
3695 | ||
3696 | /* The one function handles (most of) the permission flags in the same | |
3697 | way. */ | |
3698 | ||
3699 | static void | |
3700 | set_target_permissions (char *args, int from_tty, | |
3701 | struct cmd_list_element *c) | |
3702 | { | |
3703 | if (target_has_execution) | |
3704 | { | |
3705 | update_target_permissions (); | |
3706 | error (_("Cannot change this setting while the inferior is running.")); | |
3707 | } | |
3708 | ||
3709 | /* Make the real values match the user-changed values. */ | |
3710 | may_write_registers = may_write_registers_1; | |
3711 | may_insert_breakpoints = may_insert_breakpoints_1; | |
3712 | may_insert_tracepoints = may_insert_tracepoints_1; | |
3713 | may_insert_fast_tracepoints = may_insert_fast_tracepoints_1; | |
3714 | may_stop = may_stop_1; | |
3715 | update_observer_mode (); | |
3716 | } | |
3717 | ||
3718 | /* Set memory write permission independently of observer mode. */ | |
3719 | ||
3720 | static void | |
3721 | set_write_memory_permission (char *args, int from_tty, | |
3722 | struct cmd_list_element *c) | |
3723 | { | |
3724 | /* Make the real values match the user-changed values. */ | |
3725 | may_write_memory = may_write_memory_1; | |
3726 | update_observer_mode (); | |
3727 | } | |
3728 | ||
3729 | ||
c906108c | 3730 | void |
fba45db2 | 3731 | initialize_targets (void) |
c906108c SS |
3732 | { |
3733 | init_dummy_target (); | |
3734 | push_target (&dummy_target); | |
3735 | ||
3736 | add_info ("target", target_info, targ_desc); | |
3737 | add_info ("files", target_info, targ_desc); | |
3738 | ||
ccce17b0 | 3739 | add_setshow_zuinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
85c07804 AC |
3740 | Set target debugging."), _("\ |
3741 | Show target debugging."), _("\ | |
333dabeb | 3742 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
3cecbbbe TT |
3743 | verbose."), |
3744 | set_targetdebug, | |
ccce17b0 YQ |
3745 | show_targetdebug, |
3746 | &setdebuglist, &showdebuglist); | |
3a11626d | 3747 | |
2bc416ba | 3748 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
3749 | &trust_readonly, _("\ |
3750 | Set mode for reading from readonly sections."), _("\ | |
3751 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
3752 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
3753 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 3754 | result in significant performance improvement for remote targets."), |
2c5b56ce | 3755 | NULL, |
920d2a44 | 3756 | show_trust_readonly, |
e707bbc2 | 3757 | &setlist, &showlist); |
96baa820 JM |
3758 | |
3759 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 3760 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 3761 | |
87680a14 JB |
3762 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
3763 | _("Print the name of each layer of the internal target stack."), | |
3764 | &maintenanceprintlist); | |
3765 | ||
c6ebd6cf VP |
3766 | add_setshow_boolean_cmd ("target-async", no_class, |
3767 | &target_async_permitted_1, _("\ | |
3768 | Set whether gdb controls the inferior in asynchronous mode."), _("\ | |
3769 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
3770 | Tells gdb whether to control the inferior in asynchronous mode."), | |
329ea579 PA |
3771 | maint_set_target_async_command, |
3772 | maint_show_target_async_command, | |
3773 | &maintenance_set_cmdlist, | |
3774 | &maintenance_show_cmdlist); | |
c6ebd6cf | 3775 | |
d914c394 SS |
3776 | add_setshow_boolean_cmd ("may-write-registers", class_support, |
3777 | &may_write_registers_1, _("\ | |
3778 | Set permission to write into registers."), _("\ | |
3779 | Show permission to write into registers."), _("\ | |
3780 | When this permission is on, GDB may write into the target's registers.\n\ | |
3781 | Otherwise, any sort of write attempt will result in an error."), | |
3782 | set_target_permissions, NULL, | |
3783 | &setlist, &showlist); | |
3784 | ||
3785 | add_setshow_boolean_cmd ("may-write-memory", class_support, | |
3786 | &may_write_memory_1, _("\ | |
3787 | Set permission to write into target memory."), _("\ | |
3788 | Show permission to write into target memory."), _("\ | |
3789 | When this permission is on, GDB may write into the target's memory.\n\ | |
3790 | Otherwise, any sort of write attempt will result in an error."), | |
3791 | set_write_memory_permission, NULL, | |
3792 | &setlist, &showlist); | |
3793 | ||
3794 | add_setshow_boolean_cmd ("may-insert-breakpoints", class_support, | |
3795 | &may_insert_breakpoints_1, _("\ | |
3796 | Set permission to insert breakpoints in the target."), _("\ | |
3797 | Show permission to insert breakpoints in the target."), _("\ | |
3798 | When this permission is on, GDB may insert breakpoints in the program.\n\ | |
3799 | Otherwise, any sort of insertion attempt will result in an error."), | |
3800 | set_target_permissions, NULL, | |
3801 | &setlist, &showlist); | |
3802 | ||
3803 | add_setshow_boolean_cmd ("may-insert-tracepoints", class_support, | |
3804 | &may_insert_tracepoints_1, _("\ | |
3805 | Set permission to insert tracepoints in the target."), _("\ | |
3806 | Show permission to insert tracepoints in the target."), _("\ | |
3807 | When this permission is on, GDB may insert tracepoints in the program.\n\ | |
3808 | Otherwise, any sort of insertion attempt will result in an error."), | |
3809 | set_target_permissions, NULL, | |
3810 | &setlist, &showlist); | |
3811 | ||
3812 | add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support, | |
3813 | &may_insert_fast_tracepoints_1, _("\ | |
3814 | Set permission to insert fast tracepoints in the target."), _("\ | |
3815 | Show permission to insert fast tracepoints in the target."), _("\ | |
3816 | When this permission is on, GDB may insert fast tracepoints.\n\ | |
3817 | Otherwise, any sort of insertion attempt will result in an error."), | |
3818 | set_target_permissions, NULL, | |
3819 | &setlist, &showlist); | |
3820 | ||
3821 | add_setshow_boolean_cmd ("may-interrupt", class_support, | |
3822 | &may_stop_1, _("\ | |
3823 | Set permission to interrupt or signal the target."), _("\ | |
3824 | Show permission to interrupt or signal the target."), _("\ | |
3825 | When this permission is on, GDB may interrupt/stop the target's execution.\n\ | |
3826 | Otherwise, any attempt to interrupt or stop will be ignored."), | |
3827 | set_target_permissions, NULL, | |
3828 | &setlist, &showlist); | |
6a3cb8e8 PA |
3829 | |
3830 | add_setshow_boolean_cmd ("auto-connect-native-target", class_support, | |
3831 | &auto_connect_native_target, _("\ | |
3832 | Set whether GDB may automatically connect to the native target."), _("\ | |
3833 | Show whether GDB may automatically connect to the native target."), _("\ | |
3834 | When on, and GDB is not connected to a target yet, GDB\n\ | |
3835 | attempts \"run\" and other commands with the native target."), | |
3836 | NULL, show_auto_connect_native_target, | |
3837 | &setlist, &showlist); | |
c906108c | 3838 | } |