Commit | Line | Data |
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c906108c | 1 | /* Select target systems and architectures at runtime for GDB. |
7998dfc3 | 2 | |
ecd75fc8 | 3 | Copyright (C) 1990-2014 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 | ||
d9d2d8b6 PA |
464 | void |
465 | target_terminal_inferior (void) | |
466 | { | |
467 | /* A background resume (``run&'') should leave GDB in control of the | |
c378eb4e | 468 | terminal. Use target_can_async_p, not target_is_async_p, since at |
ba7f6c64 VP |
469 | this point the target is not async yet. However, if sync_execution |
470 | is not set, we know it will become async prior to resume. */ | |
471 | if (target_can_async_p () && !sync_execution) | |
d9d2d8b6 PA |
472 | return; |
473 | ||
5842f62a PA |
474 | if (terminal_state == terminal_is_inferior) |
475 | return; | |
476 | ||
d9d2d8b6 PA |
477 | /* If GDB is resuming the inferior in the foreground, install |
478 | inferior's terminal modes. */ | |
d2f640d4 | 479 | (*current_target.to_terminal_inferior) (¤t_target); |
5842f62a PA |
480 | terminal_state = terminal_is_inferior; |
481 | } | |
482 | ||
483 | /* See target.h. */ | |
484 | ||
485 | void | |
486 | target_terminal_ours (void) | |
487 | { | |
488 | if (terminal_state == terminal_is_ours) | |
489 | return; | |
490 | ||
491 | (*current_target.to_terminal_ours) (¤t_target); | |
492 | terminal_state = terminal_is_ours; | |
493 | } | |
494 | ||
495 | /* See target.h. */ | |
496 | ||
497 | void | |
498 | target_terminal_ours_for_output (void) | |
499 | { | |
500 | if (terminal_state != terminal_is_inferior) | |
501 | return; | |
502 | (*current_target.to_terminal_ours_for_output) (¤t_target); | |
503 | terminal_state = terminal_is_ours_for_output; | |
d9d2d8b6 | 504 | } |
136d6dae | 505 | |
b0ed115f TT |
506 | /* See target.h. */ |
507 | ||
508 | int | |
509 | target_supports_terminal_ours (void) | |
510 | { | |
511 | struct target_ops *t; | |
512 | ||
513 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
514 | { | |
515 | if (t->to_terminal_ours != delegate_terminal_ours | |
516 | && t->to_terminal_ours != tdefault_terminal_ours) | |
517 | return 1; | |
518 | } | |
519 | ||
520 | return 0; | |
521 | } | |
522 | ||
c906108c | 523 | static void |
fba45db2 | 524 | tcomplain (void) |
c906108c | 525 | { |
8a3fe4f8 | 526 | error (_("You can't do that when your target is `%s'"), |
c906108c SS |
527 | current_target.to_shortname); |
528 | } | |
529 | ||
530 | void | |
fba45db2 | 531 | noprocess (void) |
c906108c | 532 | { |
8a3fe4f8 | 533 | error (_("You can't do that without a process to debug.")); |
c906108c SS |
534 | } |
535 | ||
c906108c | 536 | static void |
0a4f40a2 | 537 | default_terminal_info (struct target_ops *self, const char *args, int from_tty) |
c906108c | 538 | { |
a3f17187 | 539 | printf_unfiltered (_("No saved terminal information.\n")); |
c906108c SS |
540 | } |
541 | ||
0ef643c8 JB |
542 | /* A default implementation for the to_get_ada_task_ptid target method. |
543 | ||
544 | This function builds the PTID by using both LWP and TID as part of | |
545 | the PTID lwp and tid elements. The pid used is the pid of the | |
546 | inferior_ptid. */ | |
547 | ||
2c0b251b | 548 | static ptid_t |
1e6b91a4 | 549 | default_get_ada_task_ptid (struct target_ops *self, long lwp, long tid) |
0ef643c8 JB |
550 | { |
551 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid); | |
552 | } | |
553 | ||
32231432 | 554 | static enum exec_direction_kind |
4c612759 | 555 | default_execution_direction (struct target_ops *self) |
32231432 PA |
556 | { |
557 | if (!target_can_execute_reverse) | |
558 | return EXEC_FORWARD; | |
559 | else if (!target_can_async_p ()) | |
560 | return EXEC_FORWARD; | |
561 | else | |
562 | gdb_assert_not_reached ("\ | |
563 | to_execution_direction must be implemented for reverse async"); | |
564 | } | |
565 | ||
7998dfc3 AC |
566 | /* Go through the target stack from top to bottom, copying over zero |
567 | entries in current_target, then filling in still empty entries. In | |
568 | effect, we are doing class inheritance through the pushed target | |
569 | vectors. | |
570 | ||
571 | NOTE: cagney/2003-10-17: The problem with this inheritance, as it | |
572 | is currently implemented, is that it discards any knowledge of | |
573 | which target an inherited method originally belonged to. | |
574 | Consequently, new new target methods should instead explicitly and | |
575 | locally search the target stack for the target that can handle the | |
576 | request. */ | |
c906108c SS |
577 | |
578 | static void | |
7998dfc3 | 579 | update_current_target (void) |
c906108c | 580 | { |
7998dfc3 AC |
581 | struct target_ops *t; |
582 | ||
08d8bcd7 | 583 | /* First, reset current's contents. */ |
7998dfc3 AC |
584 | memset (¤t_target, 0, sizeof (current_target)); |
585 | ||
1101cb7b TT |
586 | /* Install the delegators. */ |
587 | install_delegators (¤t_target); | |
588 | ||
be4ddd36 TT |
589 | current_target.to_stratum = target_stack->to_stratum; |
590 | ||
7998dfc3 AC |
591 | #define INHERIT(FIELD, TARGET) \ |
592 | if (!current_target.FIELD) \ | |
593 | current_target.FIELD = (TARGET)->FIELD | |
594 | ||
be4ddd36 TT |
595 | /* Do not add any new INHERITs here. Instead, use the delegation |
596 | mechanism provided by make-target-delegates. */ | |
7998dfc3 AC |
597 | for (t = target_stack; t; t = t->beneath) |
598 | { | |
599 | INHERIT (to_shortname, t); | |
600 | INHERIT (to_longname, t); | |
dc177b7a | 601 | INHERIT (to_attach_no_wait, t); |
74174d2e | 602 | INHERIT (to_have_steppable_watchpoint, t); |
7998dfc3 | 603 | INHERIT (to_have_continuable_watchpoint, t); |
7998dfc3 | 604 | INHERIT (to_has_thread_control, t); |
7998dfc3 AC |
605 | } |
606 | #undef INHERIT | |
607 | ||
7998dfc3 AC |
608 | /* Finally, position the target-stack beneath the squashed |
609 | "current_target". That way code looking for a non-inherited | |
610 | target method can quickly and simply find it. */ | |
611 | current_target.beneath = target_stack; | |
b4b61fdb DJ |
612 | |
613 | if (targetdebug) | |
614 | setup_target_debug (); | |
c906108c SS |
615 | } |
616 | ||
617 | /* Push a new target type into the stack of the existing target accessors, | |
618 | possibly superseding some of the existing accessors. | |
619 | ||
c906108c SS |
620 | Rather than allow an empty stack, we always have the dummy target at |
621 | the bottom stratum, so we can call the function vectors without | |
622 | checking them. */ | |
623 | ||
b26a4dcb | 624 | void |
fba45db2 | 625 | push_target (struct target_ops *t) |
c906108c | 626 | { |
258b763a | 627 | struct target_ops **cur; |
c906108c SS |
628 | |
629 | /* Check magic number. If wrong, it probably means someone changed | |
630 | the struct definition, but not all the places that initialize one. */ | |
631 | if (t->to_magic != OPS_MAGIC) | |
632 | { | |
c5aa993b JM |
633 | fprintf_unfiltered (gdb_stderr, |
634 | "Magic number of %s target struct wrong\n", | |
635 | t->to_shortname); | |
3e43a32a MS |
636 | internal_error (__FILE__, __LINE__, |
637 | _("failed internal consistency check")); | |
c906108c SS |
638 | } |
639 | ||
258b763a AC |
640 | /* Find the proper stratum to install this target in. */ |
641 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
c906108c | 642 | { |
258b763a | 643 | if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum) |
c906108c SS |
644 | break; |
645 | } | |
646 | ||
258b763a | 647 | /* If there's already targets at this stratum, remove them. */ |
88c231eb | 648 | /* FIXME: cagney/2003-10-15: I think this should be popping all |
258b763a AC |
649 | targets to CUR, and not just those at this stratum level. */ |
650 | while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum) | |
651 | { | |
652 | /* There's already something at this stratum level. Close it, | |
653 | and un-hook it from the stack. */ | |
654 | struct target_ops *tmp = (*cur); | |
5d502164 | 655 | |
258b763a AC |
656 | (*cur) = (*cur)->beneath; |
657 | tmp->beneath = NULL; | |
460014f5 | 658 | target_close (tmp); |
258b763a | 659 | } |
c906108c SS |
660 | |
661 | /* We have removed all targets in our stratum, now add the new one. */ | |
258b763a AC |
662 | t->beneath = (*cur); |
663 | (*cur) = t; | |
c906108c SS |
664 | |
665 | update_current_target (); | |
c906108c SS |
666 | } |
667 | ||
2bc416ba | 668 | /* Remove a target_ops vector from the stack, wherever it may be. |
c906108c SS |
669 | Return how many times it was removed (0 or 1). */ |
670 | ||
671 | int | |
fba45db2 | 672 | unpush_target (struct target_ops *t) |
c906108c | 673 | { |
258b763a AC |
674 | struct target_ops **cur; |
675 | struct target_ops *tmp; | |
c906108c | 676 | |
c8d104ad PA |
677 | if (t->to_stratum == dummy_stratum) |
678 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 679 | _("Attempt to unpush the dummy target")); |
c8d104ad | 680 | |
c906108c | 681 | /* Look for the specified target. Note that we assume that a target |
c378eb4e | 682 | can only occur once in the target stack. */ |
c906108c | 683 | |
258b763a AC |
684 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) |
685 | { | |
686 | if ((*cur) == t) | |
687 | break; | |
688 | } | |
c906108c | 689 | |
305436e0 PA |
690 | /* If we don't find target_ops, quit. Only open targets should be |
691 | closed. */ | |
258b763a | 692 | if ((*cur) == NULL) |
305436e0 | 693 | return 0; |
5269965e | 694 | |
c378eb4e | 695 | /* Unchain the target. */ |
258b763a AC |
696 | tmp = (*cur); |
697 | (*cur) = (*cur)->beneath; | |
698 | tmp->beneath = NULL; | |
c906108c SS |
699 | |
700 | update_current_target (); | |
c906108c | 701 | |
305436e0 PA |
702 | /* Finally close the target. Note we do this after unchaining, so |
703 | any target method calls from within the target_close | |
704 | implementation don't end up in T anymore. */ | |
460014f5 | 705 | target_close (t); |
305436e0 | 706 | |
c906108c SS |
707 | return 1; |
708 | } | |
709 | ||
aa76d38d | 710 | void |
460014f5 | 711 | pop_all_targets_above (enum strata above_stratum) |
aa76d38d | 712 | { |
87ab71f0 | 713 | while ((int) (current_target.to_stratum) > (int) above_stratum) |
aa76d38d | 714 | { |
aa76d38d PA |
715 | if (!unpush_target (target_stack)) |
716 | { | |
717 | fprintf_unfiltered (gdb_stderr, | |
718 | "pop_all_targets couldn't find target %s\n", | |
b52323fa | 719 | target_stack->to_shortname); |
aa76d38d PA |
720 | internal_error (__FILE__, __LINE__, |
721 | _("failed internal consistency check")); | |
722 | break; | |
723 | } | |
724 | } | |
725 | } | |
726 | ||
87ab71f0 | 727 | void |
460014f5 | 728 | pop_all_targets (void) |
87ab71f0 | 729 | { |
460014f5 | 730 | pop_all_targets_above (dummy_stratum); |
87ab71f0 PA |
731 | } |
732 | ||
c0edd9ed JK |
733 | /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */ |
734 | ||
735 | int | |
736 | target_is_pushed (struct target_ops *t) | |
737 | { | |
84202f9c | 738 | struct target_ops *cur; |
c0edd9ed JK |
739 | |
740 | /* Check magic number. If wrong, it probably means someone changed | |
741 | the struct definition, but not all the places that initialize one. */ | |
742 | if (t->to_magic != OPS_MAGIC) | |
743 | { | |
744 | fprintf_unfiltered (gdb_stderr, | |
745 | "Magic number of %s target struct wrong\n", | |
746 | t->to_shortname); | |
3e43a32a MS |
747 | internal_error (__FILE__, __LINE__, |
748 | _("failed internal consistency check")); | |
c0edd9ed JK |
749 | } |
750 | ||
84202f9c TT |
751 | for (cur = target_stack; cur != NULL; cur = cur->beneath) |
752 | if (cur == t) | |
c0edd9ed JK |
753 | return 1; |
754 | ||
755 | return 0; | |
756 | } | |
757 | ||
f0f9ff95 TT |
758 | /* Default implementation of to_get_thread_local_address. */ |
759 | ||
760 | static void | |
761 | generic_tls_error (void) | |
762 | { | |
763 | throw_error (TLS_GENERIC_ERROR, | |
764 | _("Cannot find thread-local variables on this target")); | |
765 | } | |
766 | ||
72f5cf0e | 767 | /* Using the objfile specified in OBJFILE, find the address for the |
9e35dae4 DJ |
768 | current thread's thread-local storage with offset OFFSET. */ |
769 | CORE_ADDR | |
770 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) | |
771 | { | |
772 | volatile CORE_ADDR addr = 0; | |
f0f9ff95 | 773 | struct target_ops *target = ¤t_target; |
9e35dae4 | 774 | |
f0f9ff95 | 775 | if (gdbarch_fetch_tls_load_module_address_p (target_gdbarch ())) |
9e35dae4 DJ |
776 | { |
777 | ptid_t ptid = inferior_ptid; | |
778 | volatile struct gdb_exception ex; | |
779 | ||
780 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
781 | { | |
782 | CORE_ADDR lm_addr; | |
783 | ||
784 | /* Fetch the load module address for this objfile. */ | |
f5656ead | 785 | lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch (), |
9e35dae4 | 786 | objfile); |
9e35dae4 | 787 | |
3e43a32a MS |
788 | addr = target->to_get_thread_local_address (target, ptid, |
789 | lm_addr, offset); | |
9e35dae4 DJ |
790 | } |
791 | /* If an error occurred, print TLS related messages here. Otherwise, | |
792 | throw the error to some higher catcher. */ | |
793 | if (ex.reason < 0) | |
794 | { | |
795 | int objfile_is_library = (objfile->flags & OBJF_SHARED); | |
796 | ||
797 | switch (ex.error) | |
798 | { | |
799 | case TLS_NO_LIBRARY_SUPPORT_ERROR: | |
3e43a32a MS |
800 | error (_("Cannot find thread-local variables " |
801 | "in this thread library.")); | |
9e35dae4 DJ |
802 | break; |
803 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: | |
804 | if (objfile_is_library) | |
805 | error (_("Cannot find shared library `%s' in dynamic" | |
4262abfb | 806 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
807 | else |
808 | error (_("Cannot find executable file `%s' in dynamic" | |
4262abfb | 809 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
810 | break; |
811 | case TLS_NOT_ALLOCATED_YET_ERROR: | |
812 | if (objfile_is_library) | |
813 | error (_("The inferior has not yet allocated storage for" | |
814 | " thread-local variables in\n" | |
815 | "the shared library `%s'\n" | |
816 | "for %s"), | |
4262abfb | 817 | objfile_name (objfile), target_pid_to_str (ptid)); |
9e35dae4 DJ |
818 | else |
819 | error (_("The inferior has not yet allocated storage for" | |
820 | " thread-local variables in\n" | |
821 | "the executable `%s'\n" | |
822 | "for %s"), | |
4262abfb | 823 | objfile_name (objfile), target_pid_to_str (ptid)); |
9e35dae4 DJ |
824 | break; |
825 | case TLS_GENERIC_ERROR: | |
826 | if (objfile_is_library) | |
827 | error (_("Cannot find thread-local storage for %s, " | |
828 | "shared library %s:\n%s"), | |
829 | target_pid_to_str (ptid), | |
4262abfb | 830 | objfile_name (objfile), ex.message); |
9e35dae4 DJ |
831 | else |
832 | error (_("Cannot find thread-local storage for %s, " | |
833 | "executable file %s:\n%s"), | |
834 | target_pid_to_str (ptid), | |
4262abfb | 835 | objfile_name (objfile), ex.message); |
9e35dae4 DJ |
836 | break; |
837 | default: | |
838 | throw_exception (ex); | |
839 | break; | |
840 | } | |
841 | } | |
842 | } | |
843 | /* It wouldn't be wrong here to try a gdbarch method, too; finding | |
844 | TLS is an ABI-specific thing. But we don't do that yet. */ | |
845 | else | |
846 | error (_("Cannot find thread-local variables on this target")); | |
847 | ||
848 | return addr; | |
849 | } | |
850 | ||
6be7b56e | 851 | const char * |
01cb8804 | 852 | target_xfer_status_to_string (enum target_xfer_status status) |
6be7b56e PA |
853 | { |
854 | #define CASE(X) case X: return #X | |
01cb8804 | 855 | switch (status) |
6be7b56e PA |
856 | { |
857 | CASE(TARGET_XFER_E_IO); | |
bc113b4e | 858 | CASE(TARGET_XFER_UNAVAILABLE); |
6be7b56e PA |
859 | default: |
860 | return "<unknown>"; | |
861 | } | |
862 | #undef CASE | |
863 | }; | |
864 | ||
865 | ||
c906108c SS |
866 | #undef MIN |
867 | #define MIN(A, B) (((A) <= (B)) ? (A) : (B)) | |
868 | ||
869 | /* target_read_string -- read a null terminated string, up to LEN bytes, | |
870 | from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful. | |
871 | Set *STRING to a pointer to malloc'd memory containing the data; the caller | |
872 | is responsible for freeing it. Return the number of bytes successfully | |
873 | read. */ | |
874 | ||
875 | int | |
fba45db2 | 876 | target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop) |
c906108c | 877 | { |
c2e8b827 | 878 | int tlen, offset, i; |
1b0ba102 | 879 | gdb_byte buf[4]; |
c906108c SS |
880 | int errcode = 0; |
881 | char *buffer; | |
882 | int buffer_allocated; | |
883 | char *bufptr; | |
884 | unsigned int nbytes_read = 0; | |
885 | ||
6217bf3e MS |
886 | gdb_assert (string); |
887 | ||
c906108c SS |
888 | /* Small for testing. */ |
889 | buffer_allocated = 4; | |
890 | buffer = xmalloc (buffer_allocated); | |
891 | bufptr = buffer; | |
892 | ||
c906108c SS |
893 | while (len > 0) |
894 | { | |
895 | tlen = MIN (len, 4 - (memaddr & 3)); | |
896 | offset = memaddr & 3; | |
897 | ||
1b0ba102 | 898 | errcode = target_read_memory (memaddr & ~3, buf, sizeof buf); |
c906108c SS |
899 | if (errcode != 0) |
900 | { | |
901 | /* The transfer request might have crossed the boundary to an | |
c378eb4e | 902 | unallocated region of memory. Retry the transfer, requesting |
c906108c SS |
903 | a single byte. */ |
904 | tlen = 1; | |
905 | offset = 0; | |
b8eb5af0 | 906 | errcode = target_read_memory (memaddr, buf, 1); |
c906108c SS |
907 | if (errcode != 0) |
908 | goto done; | |
909 | } | |
910 | ||
911 | if (bufptr - buffer + tlen > buffer_allocated) | |
912 | { | |
913 | unsigned int bytes; | |
5d502164 | 914 | |
c906108c SS |
915 | bytes = bufptr - buffer; |
916 | buffer_allocated *= 2; | |
917 | buffer = xrealloc (buffer, buffer_allocated); | |
918 | bufptr = buffer + bytes; | |
919 | } | |
920 | ||
921 | for (i = 0; i < tlen; i++) | |
922 | { | |
923 | *bufptr++ = buf[i + offset]; | |
924 | if (buf[i + offset] == '\000') | |
925 | { | |
926 | nbytes_read += i + 1; | |
927 | goto done; | |
928 | } | |
929 | } | |
930 | ||
931 | memaddr += tlen; | |
932 | len -= tlen; | |
933 | nbytes_read += tlen; | |
934 | } | |
c5aa993b | 935 | done: |
6217bf3e | 936 | *string = buffer; |
c906108c SS |
937 | if (errnop != NULL) |
938 | *errnop = errcode; | |
c906108c SS |
939 | return nbytes_read; |
940 | } | |
941 | ||
07b82ea5 PA |
942 | struct target_section_table * |
943 | target_get_section_table (struct target_ops *target) | |
944 | { | |
7e35c012 | 945 | return (*target->to_get_section_table) (target); |
07b82ea5 PA |
946 | } |
947 | ||
8db32d44 | 948 | /* Find a section containing ADDR. */ |
07b82ea5 | 949 | |
0542c86d | 950 | struct target_section * |
8db32d44 AC |
951 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
952 | { | |
07b82ea5 | 953 | struct target_section_table *table = target_get_section_table (target); |
0542c86d | 954 | struct target_section *secp; |
07b82ea5 PA |
955 | |
956 | if (table == NULL) | |
957 | return NULL; | |
958 | ||
959 | for (secp = table->sections; secp < table->sections_end; secp++) | |
8db32d44 AC |
960 | { |
961 | if (addr >= secp->addr && addr < secp->endaddr) | |
962 | return secp; | |
963 | } | |
964 | return NULL; | |
965 | } | |
966 | ||
0fec99e8 PA |
967 | |
968 | /* Helper for the memory xfer routines. Checks the attributes of the | |
969 | memory region of MEMADDR against the read or write being attempted. | |
970 | If the access is permitted returns true, otherwise returns false. | |
971 | REGION_P is an optional output parameter. If not-NULL, it is | |
972 | filled with a pointer to the memory region of MEMADDR. REG_LEN | |
973 | returns LEN trimmed to the end of the region. This is how much the | |
974 | caller can continue requesting, if the access is permitted. A | |
975 | single xfer request must not straddle memory region boundaries. */ | |
976 | ||
977 | static int | |
978 | memory_xfer_check_region (gdb_byte *readbuf, const gdb_byte *writebuf, | |
979 | ULONGEST memaddr, ULONGEST len, ULONGEST *reg_len, | |
980 | struct mem_region **region_p) | |
981 | { | |
982 | struct mem_region *region; | |
983 | ||
984 | region = lookup_mem_region (memaddr); | |
985 | ||
986 | if (region_p != NULL) | |
987 | *region_p = region; | |
988 | ||
989 | switch (region->attrib.mode) | |
990 | { | |
991 | case MEM_RO: | |
992 | if (writebuf != NULL) | |
993 | return 0; | |
994 | break; | |
995 | ||
996 | case MEM_WO: | |
997 | if (readbuf != NULL) | |
998 | return 0; | |
999 | break; | |
1000 | ||
1001 | case MEM_FLASH: | |
1002 | /* We only support writing to flash during "load" for now. */ | |
1003 | if (writebuf != NULL) | |
1004 | error (_("Writing to flash memory forbidden in this context")); | |
1005 | break; | |
1006 | ||
1007 | case MEM_NONE: | |
1008 | return 0; | |
1009 | } | |
1010 | ||
1011 | /* region->hi == 0 means there's no upper bound. */ | |
1012 | if (memaddr + len < region->hi || region->hi == 0) | |
1013 | *reg_len = len; | |
1014 | else | |
1015 | *reg_len = region->hi - memaddr; | |
1016 | ||
1017 | return 1; | |
1018 | } | |
1019 | ||
9f713294 YQ |
1020 | /* Read memory from more than one valid target. A core file, for |
1021 | instance, could have some of memory but delegate other bits to | |
1022 | the target below it. So, we must manually try all targets. */ | |
1023 | ||
9b409511 | 1024 | static enum target_xfer_status |
17fde6d0 | 1025 | raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf, |
9b409511 YQ |
1026 | const gdb_byte *writebuf, ULONGEST memaddr, LONGEST len, |
1027 | ULONGEST *xfered_len) | |
9f713294 | 1028 | { |
9b409511 | 1029 | enum target_xfer_status res; |
9f713294 YQ |
1030 | |
1031 | do | |
1032 | { | |
1033 | res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 YQ |
1034 | readbuf, writebuf, memaddr, len, |
1035 | xfered_len); | |
1036 | if (res == TARGET_XFER_OK) | |
9f713294 YQ |
1037 | break; |
1038 | ||
633785ff | 1039 | /* Stop if the target reports that the memory is not available. */ |
bc113b4e | 1040 | if (res == TARGET_XFER_UNAVAILABLE) |
633785ff MM |
1041 | break; |
1042 | ||
9f713294 YQ |
1043 | /* We want to continue past core files to executables, but not |
1044 | past a running target's memory. */ | |
1045 | if (ops->to_has_all_memory (ops)) | |
1046 | break; | |
1047 | ||
1048 | ops = ops->beneath; | |
1049 | } | |
1050 | while (ops != NULL); | |
1051 | ||
0f26cec1 PA |
1052 | /* The cache works at the raw memory level. Make sure the cache |
1053 | gets updated with raw contents no matter what kind of memory | |
1054 | object was originally being written. Note we do write-through | |
1055 | first, so that if it fails, we don't write to the cache contents | |
1056 | that never made it to the target. */ | |
1057 | if (writebuf != NULL | |
1058 | && !ptid_equal (inferior_ptid, null_ptid) | |
1059 | && target_dcache_init_p () | |
1060 | && (stack_cache_enabled_p () || code_cache_enabled_p ())) | |
1061 | { | |
1062 | DCACHE *dcache = target_dcache_get (); | |
1063 | ||
1064 | /* Note that writing to an area of memory which wasn't present | |
1065 | in the cache doesn't cause it to be loaded in. */ | |
1066 | dcache_update (dcache, res, memaddr, writebuf, *xfered_len); | |
1067 | } | |
1068 | ||
9f713294 YQ |
1069 | return res; |
1070 | } | |
1071 | ||
7f79c47e DE |
1072 | /* Perform a partial memory transfer. |
1073 | For docs see target.h, to_xfer_partial. */ | |
cf7a04e8 | 1074 | |
9b409511 | 1075 | static enum target_xfer_status |
f0ba3972 | 1076 | memory_xfer_partial_1 (struct target_ops *ops, enum target_object object, |
17fde6d0 | 1077 | gdb_byte *readbuf, const gdb_byte *writebuf, ULONGEST memaddr, |
9b409511 | 1078 | ULONGEST len, ULONGEST *xfered_len) |
0779438d | 1079 | { |
9b409511 | 1080 | enum target_xfer_status res; |
0fec99e8 | 1081 | ULONGEST reg_len; |
cf7a04e8 | 1082 | struct mem_region *region; |
4e5d721f | 1083 | struct inferior *inf; |
cf7a04e8 | 1084 | |
07b82ea5 PA |
1085 | /* For accesses to unmapped overlay sections, read directly from |
1086 | files. Must do this first, as MEMADDR may need adjustment. */ | |
1087 | if (readbuf != NULL && overlay_debugging) | |
1088 | { | |
1089 | struct obj_section *section = find_pc_overlay (memaddr); | |
5d502164 | 1090 | |
07b82ea5 PA |
1091 | if (pc_in_unmapped_range (memaddr, section)) |
1092 | { | |
1093 | struct target_section_table *table | |
1094 | = target_get_section_table (ops); | |
1095 | const char *section_name = section->the_bfd_section->name; | |
5d502164 | 1096 | |
07b82ea5 PA |
1097 | memaddr = overlay_mapped_address (memaddr, section); |
1098 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 1099 | memaddr, len, xfered_len, |
07b82ea5 PA |
1100 | table->sections, |
1101 | table->sections_end, | |
1102 | section_name); | |
1103 | } | |
1104 | } | |
1105 | ||
1106 | /* Try the executable files, if "trust-readonly-sections" is set. */ | |
cf7a04e8 DJ |
1107 | if (readbuf != NULL && trust_readonly) |
1108 | { | |
0542c86d | 1109 | struct target_section *secp; |
07b82ea5 | 1110 | struct target_section_table *table; |
cf7a04e8 DJ |
1111 | |
1112 | secp = target_section_by_addr (ops, memaddr); | |
1113 | if (secp != NULL | |
2b2848e2 DE |
1114 | && (bfd_get_section_flags (secp->the_bfd_section->owner, |
1115 | secp->the_bfd_section) | |
cf7a04e8 | 1116 | & SEC_READONLY)) |
07b82ea5 PA |
1117 | { |
1118 | table = target_get_section_table (ops); | |
1119 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 1120 | memaddr, len, xfered_len, |
07b82ea5 PA |
1121 | table->sections, |
1122 | table->sections_end, | |
1123 | NULL); | |
1124 | } | |
98646950 UW |
1125 | } |
1126 | ||
cf7a04e8 | 1127 | /* Try GDB's internal data cache. */ |
cf7a04e8 | 1128 | |
0fec99e8 PA |
1129 | if (!memory_xfer_check_region (readbuf, writebuf, memaddr, len, ®_len, |
1130 | ®ion)) | |
1131 | return TARGET_XFER_E_IO; | |
cf7a04e8 | 1132 | |
6c95b8df PA |
1133 | if (!ptid_equal (inferior_ptid, null_ptid)) |
1134 | inf = find_inferior_pid (ptid_get_pid (inferior_ptid)); | |
1135 | else | |
1136 | inf = NULL; | |
4e5d721f DE |
1137 | |
1138 | if (inf != NULL | |
0f26cec1 | 1139 | && readbuf != NULL |
2f4d8875 PA |
1140 | /* The dcache reads whole cache lines; that doesn't play well |
1141 | with reading from a trace buffer, because reading outside of | |
1142 | the collected memory range fails. */ | |
1143 | && get_traceframe_number () == -1 | |
4e5d721f | 1144 | && (region->attrib.cache |
29453a14 YQ |
1145 | || (stack_cache_enabled_p () && object == TARGET_OBJECT_STACK_MEMORY) |
1146 | || (code_cache_enabled_p () && object == TARGET_OBJECT_CODE_MEMORY))) | |
cf7a04e8 | 1147 | { |
2a2f9fe4 YQ |
1148 | DCACHE *dcache = target_dcache_get_or_init (); |
1149 | ||
0f26cec1 PA |
1150 | return dcache_read_memory_partial (ops, dcache, memaddr, readbuf, |
1151 | reg_len, xfered_len); | |
cf7a04e8 DJ |
1152 | } |
1153 | ||
1154 | /* If none of those methods found the memory we wanted, fall back | |
1155 | to a target partial transfer. Normally a single call to | |
1156 | to_xfer_partial is enough; if it doesn't recognize an object | |
1157 | it will call the to_xfer_partial of the next target down. | |
1158 | But for memory this won't do. Memory is the only target | |
9b409511 YQ |
1159 | object which can be read from more than one valid target. |
1160 | A core file, for instance, could have some of memory but | |
1161 | delegate other bits to the target below it. So, we must | |
1162 | manually try all targets. */ | |
1163 | ||
1164 | res = raw_memory_xfer_partial (ops, readbuf, writebuf, memaddr, reg_len, | |
1165 | xfered_len); | |
cf7a04e8 DJ |
1166 | |
1167 | /* If we still haven't got anything, return the last error. We | |
1168 | give up. */ | |
1169 | return res; | |
0779438d AC |
1170 | } |
1171 | ||
f0ba3972 PA |
1172 | /* Perform a partial memory transfer. For docs see target.h, |
1173 | to_xfer_partial. */ | |
1174 | ||
9b409511 | 1175 | static enum target_xfer_status |
f0ba3972 | 1176 | memory_xfer_partial (struct target_ops *ops, enum target_object object, |
9b409511 YQ |
1177 | gdb_byte *readbuf, const gdb_byte *writebuf, |
1178 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) | |
f0ba3972 | 1179 | { |
9b409511 | 1180 | enum target_xfer_status res; |
f0ba3972 PA |
1181 | |
1182 | /* Zero length requests are ok and require no work. */ | |
1183 | if (len == 0) | |
9b409511 | 1184 | return TARGET_XFER_EOF; |
f0ba3972 PA |
1185 | |
1186 | /* Fill in READBUF with breakpoint shadows, or WRITEBUF with | |
1187 | breakpoint insns, thus hiding out from higher layers whether | |
1188 | there are software breakpoints inserted in the code stream. */ | |
1189 | if (readbuf != NULL) | |
1190 | { | |
9b409511 YQ |
1191 | res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len, |
1192 | xfered_len); | |
f0ba3972 | 1193 | |
9b409511 | 1194 | if (res == TARGET_XFER_OK && !show_memory_breakpoints) |
c63528fc | 1195 | breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, *xfered_len); |
f0ba3972 PA |
1196 | } |
1197 | else | |
1198 | { | |
1199 | void *buf; | |
1200 | struct cleanup *old_chain; | |
1201 | ||
67c059c2 AB |
1202 | /* A large write request is likely to be partially satisfied |
1203 | by memory_xfer_partial_1. We will continually malloc | |
1204 | and free a copy of the entire write request for breakpoint | |
1205 | shadow handling even though we only end up writing a small | |
1206 | subset of it. Cap writes to 4KB to mitigate this. */ | |
1207 | len = min (4096, len); | |
1208 | ||
f0ba3972 PA |
1209 | buf = xmalloc (len); |
1210 | old_chain = make_cleanup (xfree, buf); | |
1211 | memcpy (buf, writebuf, len); | |
1212 | ||
1213 | breakpoint_xfer_memory (NULL, buf, writebuf, memaddr, len); | |
9b409511 YQ |
1214 | res = memory_xfer_partial_1 (ops, object, NULL, buf, memaddr, len, |
1215 | xfered_len); | |
f0ba3972 PA |
1216 | |
1217 | do_cleanups (old_chain); | |
1218 | } | |
1219 | ||
1220 | return res; | |
1221 | } | |
1222 | ||
8defab1a DJ |
1223 | static void |
1224 | restore_show_memory_breakpoints (void *arg) | |
1225 | { | |
1226 | show_memory_breakpoints = (uintptr_t) arg; | |
1227 | } | |
1228 | ||
1229 | struct cleanup * | |
1230 | make_show_memory_breakpoints_cleanup (int show) | |
1231 | { | |
1232 | int current = show_memory_breakpoints; | |
8defab1a | 1233 | |
5d502164 | 1234 | show_memory_breakpoints = show; |
8defab1a DJ |
1235 | return make_cleanup (restore_show_memory_breakpoints, |
1236 | (void *) (uintptr_t) current); | |
1237 | } | |
1238 | ||
7f79c47e DE |
1239 | /* For docs see target.h, to_xfer_partial. */ |
1240 | ||
9b409511 | 1241 | enum target_xfer_status |
27394598 AC |
1242 | target_xfer_partial (struct target_ops *ops, |
1243 | enum target_object object, const char *annex, | |
4ac248ca | 1244 | gdb_byte *readbuf, const gdb_byte *writebuf, |
9b409511 YQ |
1245 | ULONGEST offset, ULONGEST len, |
1246 | ULONGEST *xfered_len) | |
27394598 | 1247 | { |
9b409511 | 1248 | enum target_xfer_status retval; |
27394598 AC |
1249 | |
1250 | gdb_assert (ops->to_xfer_partial != NULL); | |
cf7a04e8 | 1251 | |
ce6d0892 YQ |
1252 | /* Transfer is done when LEN is zero. */ |
1253 | if (len == 0) | |
9b409511 | 1254 | return TARGET_XFER_EOF; |
ce6d0892 | 1255 | |
d914c394 SS |
1256 | if (writebuf && !may_write_memory) |
1257 | error (_("Writing to memory is not allowed (addr %s, len %s)"), | |
1258 | core_addr_to_string_nz (offset), plongest (len)); | |
1259 | ||
9b409511 YQ |
1260 | *xfered_len = 0; |
1261 | ||
cf7a04e8 DJ |
1262 | /* If this is a memory transfer, let the memory-specific code |
1263 | have a look at it instead. Memory transfers are more | |
1264 | complicated. */ | |
29453a14 YQ |
1265 | if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY |
1266 | || object == TARGET_OBJECT_CODE_MEMORY) | |
4e5d721f | 1267 | retval = memory_xfer_partial (ops, object, readbuf, |
9b409511 | 1268 | writebuf, offset, len, xfered_len); |
9f713294 | 1269 | else if (object == TARGET_OBJECT_RAW_MEMORY) |
cf7a04e8 | 1270 | { |
0fec99e8 PA |
1271 | /* Skip/avoid accessing the target if the memory region |
1272 | attributes block the access. Check this here instead of in | |
1273 | raw_memory_xfer_partial as otherwise we'd end up checking | |
1274 | this twice in the case of the memory_xfer_partial path is | |
1275 | taken; once before checking the dcache, and another in the | |
1276 | tail call to raw_memory_xfer_partial. */ | |
1277 | if (!memory_xfer_check_region (readbuf, writebuf, offset, len, &len, | |
1278 | NULL)) | |
1279 | return TARGET_XFER_E_IO; | |
1280 | ||
9f713294 | 1281 | /* Request the normal memory object from other layers. */ |
9b409511 YQ |
1282 | retval = raw_memory_xfer_partial (ops, readbuf, writebuf, offset, len, |
1283 | xfered_len); | |
cf7a04e8 | 1284 | } |
9f713294 YQ |
1285 | else |
1286 | retval = ops->to_xfer_partial (ops, object, annex, readbuf, | |
9b409511 | 1287 | writebuf, offset, len, xfered_len); |
cf7a04e8 | 1288 | |
27394598 AC |
1289 | if (targetdebug) |
1290 | { | |
1291 | const unsigned char *myaddr = NULL; | |
1292 | ||
1293 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a | 1294 | "%s:target_xfer_partial " |
9b409511 | 1295 | "(%d, %s, %s, %s, %s, %s) = %d, %s", |
27394598 AC |
1296 | ops->to_shortname, |
1297 | (int) object, | |
1298 | (annex ? annex : "(null)"), | |
53b71562 JB |
1299 | host_address_to_string (readbuf), |
1300 | host_address_to_string (writebuf), | |
0b1553bc | 1301 | core_addr_to_string_nz (offset), |
9b409511 YQ |
1302 | pulongest (len), retval, |
1303 | pulongest (*xfered_len)); | |
27394598 AC |
1304 | |
1305 | if (readbuf) | |
1306 | myaddr = readbuf; | |
1307 | if (writebuf) | |
1308 | myaddr = writebuf; | |
9b409511 | 1309 | if (retval == TARGET_XFER_OK && myaddr != NULL) |
27394598 AC |
1310 | { |
1311 | int i; | |
2bc416ba | 1312 | |
27394598 | 1313 | fputs_unfiltered (", bytes =", gdb_stdlog); |
9b409511 | 1314 | for (i = 0; i < *xfered_len; i++) |
27394598 | 1315 | { |
53b71562 | 1316 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1317 | { |
1318 | if (targetdebug < 2 && i > 0) | |
1319 | { | |
1320 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
1321 | break; | |
1322 | } | |
1323 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1324 | } | |
2bc416ba | 1325 | |
27394598 AC |
1326 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
1327 | } | |
1328 | } | |
2bc416ba | 1329 | |
27394598 AC |
1330 | fputc_unfiltered ('\n', gdb_stdlog); |
1331 | } | |
9b409511 YQ |
1332 | |
1333 | /* Check implementations of to_xfer_partial update *XFERED_LEN | |
1334 | properly. Do assertion after printing debug messages, so that we | |
1335 | can find more clues on assertion failure from debugging messages. */ | |
bc113b4e | 1336 | if (retval == TARGET_XFER_OK || retval == TARGET_XFER_UNAVAILABLE) |
9b409511 YQ |
1337 | gdb_assert (*xfered_len > 0); |
1338 | ||
27394598 AC |
1339 | return retval; |
1340 | } | |
1341 | ||
578d3588 PA |
1342 | /* Read LEN bytes of target memory at address MEMADDR, placing the |
1343 | results in GDB's memory at MYADDR. Returns either 0 for success or | |
9b409511 | 1344 | TARGET_XFER_E_IO if any error occurs. |
c906108c SS |
1345 | |
1346 | If an error occurs, no guarantee is made about the contents of the data at | |
1347 | MYADDR. In particular, the caller should not depend upon partial reads | |
1348 | filling the buffer with good data. There is no way for the caller to know | |
1349 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 | 1350 | deal with partial reads should call target_read (which will retry until |
c378eb4e | 1351 | it makes no progress, and then return how much was transferred). */ |
c906108c SS |
1352 | |
1353 | int | |
1b162304 | 1354 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
c906108c | 1355 | { |
c35b1492 PA |
1356 | /* Dispatch to the topmost target, not the flattened current_target. |
1357 | Memory accesses check target->to_has_(all_)memory, and the | |
1358 | flattened target doesn't inherit those. */ | |
1359 | if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1360 | myaddr, memaddr, len) == len) |
1361 | return 0; | |
0779438d | 1362 | else |
578d3588 | 1363 | return TARGET_XFER_E_IO; |
c906108c SS |
1364 | } |
1365 | ||
721ec300 GB |
1366 | /* See target/target.h. */ |
1367 | ||
1368 | int | |
1369 | target_read_uint32 (CORE_ADDR memaddr, uint32_t *result) | |
1370 | { | |
1371 | gdb_byte buf[4]; | |
1372 | int r; | |
1373 | ||
1374 | r = target_read_memory (memaddr, buf, sizeof buf); | |
1375 | if (r != 0) | |
1376 | return r; | |
1377 | *result = extract_unsigned_integer (buf, sizeof buf, | |
1378 | gdbarch_byte_order (target_gdbarch ())); | |
1379 | return 0; | |
1380 | } | |
1381 | ||
aee4bf85 PA |
1382 | /* Like target_read_memory, but specify explicitly that this is a read |
1383 | from the target's raw memory. That is, this read bypasses the | |
1384 | dcache, breakpoint shadowing, etc. */ | |
1385 | ||
1386 | int | |
1387 | target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1388 | { | |
1389 | /* See comment in target_read_memory about why the request starts at | |
1390 | current_target.beneath. */ | |
1391 | if (target_read (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, | |
1392 | myaddr, memaddr, len) == len) | |
1393 | return 0; | |
1394 | else | |
1395 | return TARGET_XFER_E_IO; | |
1396 | } | |
1397 | ||
4e5d721f DE |
1398 | /* Like target_read_memory, but specify explicitly that this is a read from |
1399 | the target's stack. This may trigger different cache behavior. */ | |
1400 | ||
1401 | int | |
45aa4659 | 1402 | target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
4e5d721f | 1403 | { |
aee4bf85 PA |
1404 | /* See comment in target_read_memory about why the request starts at |
1405 | current_target.beneath. */ | |
4e5d721f DE |
1406 | if (target_read (current_target.beneath, TARGET_OBJECT_STACK_MEMORY, NULL, |
1407 | myaddr, memaddr, len) == len) | |
1408 | return 0; | |
1409 | else | |
578d3588 | 1410 | return TARGET_XFER_E_IO; |
4e5d721f DE |
1411 | } |
1412 | ||
29453a14 YQ |
1413 | /* Like target_read_memory, but specify explicitly that this is a read from |
1414 | the target's code. This may trigger different cache behavior. */ | |
1415 | ||
1416 | int | |
1417 | target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1418 | { | |
aee4bf85 PA |
1419 | /* See comment in target_read_memory about why the request starts at |
1420 | current_target.beneath. */ | |
29453a14 YQ |
1421 | if (target_read (current_target.beneath, TARGET_OBJECT_CODE_MEMORY, NULL, |
1422 | myaddr, memaddr, len) == len) | |
1423 | return 0; | |
1424 | else | |
1425 | return TARGET_XFER_E_IO; | |
1426 | } | |
1427 | ||
7f79c47e | 1428 | /* Write LEN bytes from MYADDR to target memory at address MEMADDR. |
9b409511 | 1429 | Returns either 0 for success or TARGET_XFER_E_IO if any |
578d3588 PA |
1430 | error occurs. If an error occurs, no guarantee is made about how |
1431 | much data got written. Callers that can deal with partial writes | |
1432 | should call target_write. */ | |
7f79c47e | 1433 | |
c906108c | 1434 | int |
45aa4659 | 1435 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
c906108c | 1436 | { |
aee4bf85 PA |
1437 | /* See comment in target_read_memory about why the request starts at |
1438 | current_target.beneath. */ | |
c35b1492 | 1439 | if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, |
cf7a04e8 DJ |
1440 | myaddr, memaddr, len) == len) |
1441 | return 0; | |
0779438d | 1442 | else |
578d3588 | 1443 | return TARGET_XFER_E_IO; |
c906108c | 1444 | } |
c5aa993b | 1445 | |
f0ba3972 | 1446 | /* Write LEN bytes from MYADDR to target raw memory at address |
9b409511 | 1447 | MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO |
578d3588 PA |
1448 | if any error occurs. If an error occurs, no guarantee is made |
1449 | about how much data got written. Callers that can deal with | |
1450 | partial writes should call target_write. */ | |
f0ba3972 PA |
1451 | |
1452 | int | |
45aa4659 | 1453 | target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
f0ba3972 | 1454 | { |
aee4bf85 PA |
1455 | /* See comment in target_read_memory about why the request starts at |
1456 | current_target.beneath. */ | |
f0ba3972 PA |
1457 | if (target_write (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, |
1458 | myaddr, memaddr, len) == len) | |
1459 | return 0; | |
1460 | else | |
578d3588 | 1461 | return TARGET_XFER_E_IO; |
f0ba3972 PA |
1462 | } |
1463 | ||
fd79ecee DJ |
1464 | /* Fetch the target's memory map. */ |
1465 | ||
1466 | VEC(mem_region_s) * | |
1467 | target_memory_map (void) | |
1468 | { | |
1469 | VEC(mem_region_s) *result; | |
1470 | struct mem_region *last_one, *this_one; | |
1471 | int ix; | |
1472 | struct target_ops *t; | |
1473 | ||
6b2c5a57 | 1474 | result = current_target.to_memory_map (¤t_target); |
fd79ecee DJ |
1475 | if (result == NULL) |
1476 | return NULL; | |
1477 | ||
1478 | qsort (VEC_address (mem_region_s, result), | |
1479 | VEC_length (mem_region_s, result), | |
1480 | sizeof (struct mem_region), mem_region_cmp); | |
1481 | ||
1482 | /* Check that regions do not overlap. Simultaneously assign | |
1483 | a numbering for the "mem" commands to use to refer to | |
1484 | each region. */ | |
1485 | last_one = NULL; | |
1486 | for (ix = 0; VEC_iterate (mem_region_s, result, ix, this_one); ix++) | |
1487 | { | |
1488 | this_one->number = ix; | |
1489 | ||
1490 | if (last_one && last_one->hi > this_one->lo) | |
1491 | { | |
1492 | warning (_("Overlapping regions in memory map: ignoring")); | |
1493 | VEC_free (mem_region_s, result); | |
1494 | return NULL; | |
1495 | } | |
1496 | last_one = this_one; | |
1497 | } | |
1498 | ||
1499 | return result; | |
1500 | } | |
1501 | ||
a76d924d DJ |
1502 | void |
1503 | target_flash_erase (ULONGEST address, LONGEST length) | |
1504 | { | |
e8a6c6ac | 1505 | current_target.to_flash_erase (¤t_target, address, length); |
a76d924d DJ |
1506 | } |
1507 | ||
1508 | void | |
1509 | target_flash_done (void) | |
1510 | { | |
f6fb2925 | 1511 | current_target.to_flash_done (¤t_target); |
a76d924d DJ |
1512 | } |
1513 | ||
920d2a44 AC |
1514 | static void |
1515 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1516 | struct cmd_list_element *c, const char *value) | |
1517 | { | |
3e43a32a MS |
1518 | fprintf_filtered (file, |
1519 | _("Mode for reading from readonly sections is %s.\n"), | |
920d2a44 AC |
1520 | value); |
1521 | } | |
3a11626d | 1522 | |
7f79c47e | 1523 | /* Target vector read/write partial wrapper functions. */ |
0088c768 | 1524 | |
9b409511 | 1525 | static enum target_xfer_status |
1e3ff5ad AC |
1526 | target_read_partial (struct target_ops *ops, |
1527 | enum target_object object, | |
1b0ba102 | 1528 | const char *annex, gdb_byte *buf, |
9b409511 YQ |
1529 | ULONGEST offset, ULONGEST len, |
1530 | ULONGEST *xfered_len) | |
1e3ff5ad | 1531 | { |
9b409511 YQ |
1532 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len, |
1533 | xfered_len); | |
1e3ff5ad AC |
1534 | } |
1535 | ||
8a55ffb0 | 1536 | static enum target_xfer_status |
1e3ff5ad AC |
1537 | target_write_partial (struct target_ops *ops, |
1538 | enum target_object object, | |
1b0ba102 | 1539 | const char *annex, const gdb_byte *buf, |
9b409511 | 1540 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len) |
1e3ff5ad | 1541 | { |
9b409511 YQ |
1542 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len, |
1543 | xfered_len); | |
1e3ff5ad AC |
1544 | } |
1545 | ||
1546 | /* Wrappers to perform the full transfer. */ | |
7f79c47e DE |
1547 | |
1548 | /* For docs on target_read see target.h. */ | |
1549 | ||
1e3ff5ad AC |
1550 | LONGEST |
1551 | target_read (struct target_ops *ops, | |
1552 | enum target_object object, | |
1b0ba102 | 1553 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1554 | ULONGEST offset, LONGEST len) |
1555 | { | |
1556 | LONGEST xfered = 0; | |
5d502164 | 1557 | |
1e3ff5ad AC |
1558 | while (xfered < len) |
1559 | { | |
9b409511 YQ |
1560 | ULONGEST xfered_len; |
1561 | enum target_xfer_status status; | |
1562 | ||
1563 | status = target_read_partial (ops, object, annex, | |
1564 | (gdb_byte *) buf + xfered, | |
1565 | offset + xfered, len - xfered, | |
1566 | &xfered_len); | |
5d502164 | 1567 | |
1e3ff5ad | 1568 | /* Call an observer, notifying them of the xfer progress? */ |
9b409511 | 1569 | if (status == TARGET_XFER_EOF) |
13547ab6 | 1570 | return xfered; |
9b409511 YQ |
1571 | else if (status == TARGET_XFER_OK) |
1572 | { | |
1573 | xfered += xfered_len; | |
1574 | QUIT; | |
1575 | } | |
1576 | else | |
0088c768 | 1577 | return -1; |
9b409511 | 1578 | |
1e3ff5ad AC |
1579 | } |
1580 | return len; | |
1581 | } | |
1582 | ||
f1a507a1 JB |
1583 | /* Assuming that the entire [begin, end) range of memory cannot be |
1584 | read, try to read whatever subrange is possible to read. | |
1585 | ||
1586 | The function returns, in RESULT, either zero or one memory block. | |
1587 | If there's a readable subrange at the beginning, it is completely | |
1588 | read and returned. Any further readable subrange will not be read. | |
1589 | Otherwise, if there's a readable subrange at the end, it will be | |
1590 | completely read and returned. Any readable subranges before it | |
1591 | (obviously, not starting at the beginning), will be ignored. In | |
1592 | other cases -- either no readable subrange, or readable subrange(s) | |
1593 | that is neither at the beginning, or end, nothing is returned. | |
1594 | ||
1595 | The purpose of this function is to handle a read across a boundary | |
1596 | of accessible memory in a case when memory map is not available. | |
1597 | The above restrictions are fine for this case, but will give | |
1598 | incorrect results if the memory is 'patchy'. However, supporting | |
1599 | 'patchy' memory would require trying to read every single byte, | |
1600 | and it seems unacceptable solution. Explicit memory map is | |
1601 | recommended for this case -- and target_read_memory_robust will | |
1602 | take care of reading multiple ranges then. */ | |
8dedea02 VP |
1603 | |
1604 | static void | |
3e43a32a MS |
1605 | read_whatever_is_readable (struct target_ops *ops, |
1606 | ULONGEST begin, ULONGEST end, | |
8dedea02 | 1607 | VEC(memory_read_result_s) **result) |
d5086790 | 1608 | { |
f1a507a1 | 1609 | gdb_byte *buf = xmalloc (end - begin); |
8dedea02 VP |
1610 | ULONGEST current_begin = begin; |
1611 | ULONGEST current_end = end; | |
1612 | int forward; | |
1613 | memory_read_result_s r; | |
9b409511 | 1614 | ULONGEST xfered_len; |
8dedea02 VP |
1615 | |
1616 | /* If we previously failed to read 1 byte, nothing can be done here. */ | |
1617 | if (end - begin <= 1) | |
13b3fd9b MS |
1618 | { |
1619 | xfree (buf); | |
1620 | return; | |
1621 | } | |
8dedea02 VP |
1622 | |
1623 | /* Check that either first or the last byte is readable, and give up | |
c378eb4e | 1624 | if not. This heuristic is meant to permit reading accessible memory |
8dedea02 VP |
1625 | at the boundary of accessible region. */ |
1626 | if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 | 1627 | buf, begin, 1, &xfered_len) == TARGET_XFER_OK) |
8dedea02 VP |
1628 | { |
1629 | forward = 1; | |
1630 | ++current_begin; | |
1631 | } | |
1632 | else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 YQ |
1633 | buf + (end-begin) - 1, end - 1, 1, |
1634 | &xfered_len) == TARGET_XFER_OK) | |
8dedea02 VP |
1635 | { |
1636 | forward = 0; | |
1637 | --current_end; | |
1638 | } | |
1639 | else | |
1640 | { | |
13b3fd9b | 1641 | xfree (buf); |
8dedea02 VP |
1642 | return; |
1643 | } | |
1644 | ||
1645 | /* Loop invariant is that the [current_begin, current_end) was previously | |
1646 | found to be not readable as a whole. | |
1647 | ||
1648 | Note loop condition -- if the range has 1 byte, we can't divide the range | |
1649 | so there's no point trying further. */ | |
1650 | while (current_end - current_begin > 1) | |
1651 | { | |
1652 | ULONGEST first_half_begin, first_half_end; | |
1653 | ULONGEST second_half_begin, second_half_end; | |
1654 | LONGEST xfer; | |
8dedea02 | 1655 | ULONGEST middle = current_begin + (current_end - current_begin)/2; |
f1a507a1 | 1656 | |
8dedea02 VP |
1657 | if (forward) |
1658 | { | |
1659 | first_half_begin = current_begin; | |
1660 | first_half_end = middle; | |
1661 | second_half_begin = middle; | |
1662 | second_half_end = current_end; | |
1663 | } | |
1664 | else | |
1665 | { | |
1666 | first_half_begin = middle; | |
1667 | first_half_end = current_end; | |
1668 | second_half_begin = current_begin; | |
1669 | second_half_end = middle; | |
1670 | } | |
1671 | ||
1672 | xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
1673 | buf + (first_half_begin - begin), | |
1674 | first_half_begin, | |
1675 | first_half_end - first_half_begin); | |
1676 | ||
1677 | if (xfer == first_half_end - first_half_begin) | |
1678 | { | |
c378eb4e | 1679 | /* This half reads up fine. So, the error must be in the |
3e43a32a | 1680 | other half. */ |
8dedea02 VP |
1681 | current_begin = second_half_begin; |
1682 | current_end = second_half_end; | |
1683 | } | |
1684 | else | |
1685 | { | |
c378eb4e MS |
1686 | /* This half is not readable. Because we've tried one byte, we |
1687 | know some part of this half if actually redable. Go to the next | |
8dedea02 VP |
1688 | iteration to divide again and try to read. |
1689 | ||
1690 | We don't handle the other half, because this function only tries | |
1691 | to read a single readable subrange. */ | |
1692 | current_begin = first_half_begin; | |
1693 | current_end = first_half_end; | |
1694 | } | |
1695 | } | |
1696 | ||
1697 | if (forward) | |
1698 | { | |
1699 | /* The [begin, current_begin) range has been read. */ | |
1700 | r.begin = begin; | |
1701 | r.end = current_begin; | |
1702 | r.data = buf; | |
1703 | } | |
1704 | else | |
1705 | { | |
1706 | /* The [current_end, end) range has been read. */ | |
1707 | LONGEST rlen = end - current_end; | |
f1a507a1 | 1708 | |
8dedea02 VP |
1709 | r.data = xmalloc (rlen); |
1710 | memcpy (r.data, buf + current_end - begin, rlen); | |
1711 | r.begin = current_end; | |
1712 | r.end = end; | |
1713 | xfree (buf); | |
1714 | } | |
1715 | VEC_safe_push(memory_read_result_s, (*result), &r); | |
1716 | } | |
1717 | ||
1718 | void | |
1719 | free_memory_read_result_vector (void *x) | |
1720 | { | |
1721 | VEC(memory_read_result_s) *v = x; | |
1722 | memory_read_result_s *current; | |
1723 | int ix; | |
1724 | ||
1725 | for (ix = 0; VEC_iterate (memory_read_result_s, v, ix, current); ++ix) | |
1726 | { | |
1727 | xfree (current->data); | |
1728 | } | |
1729 | VEC_free (memory_read_result_s, v); | |
1730 | } | |
1731 | ||
1732 | VEC(memory_read_result_s) * | |
1733 | read_memory_robust (struct target_ops *ops, ULONGEST offset, LONGEST len) | |
1734 | { | |
1735 | VEC(memory_read_result_s) *result = 0; | |
1736 | ||
1737 | LONGEST xfered = 0; | |
d5086790 VP |
1738 | while (xfered < len) |
1739 | { | |
8dedea02 VP |
1740 | struct mem_region *region = lookup_mem_region (offset + xfered); |
1741 | LONGEST rlen; | |
5d502164 | 1742 | |
8dedea02 VP |
1743 | /* If there is no explicit region, a fake one should be created. */ |
1744 | gdb_assert (region); | |
1745 | ||
1746 | if (region->hi == 0) | |
1747 | rlen = len - xfered; | |
1748 | else | |
1749 | rlen = region->hi - offset; | |
1750 | ||
1751 | if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO) | |
d5086790 | 1752 | { |
c378eb4e | 1753 | /* Cannot read this region. Note that we can end up here only |
8dedea02 VP |
1754 | if the region is explicitly marked inaccessible, or |
1755 | 'inaccessible-by-default' is in effect. */ | |
1756 | xfered += rlen; | |
1757 | } | |
1758 | else | |
1759 | { | |
1760 | LONGEST to_read = min (len - xfered, rlen); | |
1761 | gdb_byte *buffer = (gdb_byte *)xmalloc (to_read); | |
1762 | ||
1763 | LONGEST xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
1764 | (gdb_byte *) buffer, | |
1765 | offset + xfered, to_read); | |
1766 | /* Call an observer, notifying them of the xfer progress? */ | |
d5086790 | 1767 | if (xfer <= 0) |
d5086790 | 1768 | { |
c378eb4e | 1769 | /* Got an error reading full chunk. See if maybe we can read |
8dedea02 VP |
1770 | some subrange. */ |
1771 | xfree (buffer); | |
3e43a32a MS |
1772 | read_whatever_is_readable (ops, offset + xfered, |
1773 | offset + xfered + to_read, &result); | |
8dedea02 | 1774 | xfered += to_read; |
d5086790 | 1775 | } |
8dedea02 VP |
1776 | else |
1777 | { | |
1778 | struct memory_read_result r; | |
1779 | r.data = buffer; | |
1780 | r.begin = offset + xfered; | |
1781 | r.end = r.begin + xfer; | |
1782 | VEC_safe_push (memory_read_result_s, result, &r); | |
1783 | xfered += xfer; | |
1784 | } | |
1785 | QUIT; | |
d5086790 | 1786 | } |
d5086790 | 1787 | } |
8dedea02 | 1788 | return result; |
d5086790 VP |
1789 | } |
1790 | ||
8dedea02 | 1791 | |
cf7a04e8 DJ |
1792 | /* An alternative to target_write with progress callbacks. */ |
1793 | ||
1e3ff5ad | 1794 | LONGEST |
cf7a04e8 DJ |
1795 | target_write_with_progress (struct target_ops *ops, |
1796 | enum target_object object, | |
1797 | const char *annex, const gdb_byte *buf, | |
1798 | ULONGEST offset, LONGEST len, | |
1799 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad AC |
1800 | { |
1801 | LONGEST xfered = 0; | |
a76d924d DJ |
1802 | |
1803 | /* Give the progress callback a chance to set up. */ | |
1804 | if (progress) | |
1805 | (*progress) (0, baton); | |
1806 | ||
1e3ff5ad AC |
1807 | while (xfered < len) |
1808 | { | |
9b409511 YQ |
1809 | ULONGEST xfered_len; |
1810 | enum target_xfer_status status; | |
1811 | ||
1812 | status = target_write_partial (ops, object, annex, | |
1813 | (gdb_byte *) buf + xfered, | |
1814 | offset + xfered, len - xfered, | |
1815 | &xfered_len); | |
cf7a04e8 | 1816 | |
5c328c05 YQ |
1817 | if (status != TARGET_XFER_OK) |
1818 | return status == TARGET_XFER_EOF ? xfered : -1; | |
cf7a04e8 DJ |
1819 | |
1820 | if (progress) | |
9b409511 | 1821 | (*progress) (xfered_len, baton); |
cf7a04e8 | 1822 | |
9b409511 | 1823 | xfered += xfered_len; |
1e3ff5ad AC |
1824 | QUIT; |
1825 | } | |
1826 | return len; | |
1827 | } | |
1828 | ||
7f79c47e DE |
1829 | /* For docs on target_write see target.h. */ |
1830 | ||
cf7a04e8 DJ |
1831 | LONGEST |
1832 | target_write (struct target_ops *ops, | |
1833 | enum target_object object, | |
1834 | const char *annex, const gdb_byte *buf, | |
1835 | ULONGEST offset, LONGEST len) | |
1836 | { | |
1837 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
1838 | NULL, NULL); | |
1839 | } | |
1840 | ||
159f81f3 DJ |
1841 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
1842 | the size of the transferred data. PADDING additional bytes are | |
1843 | available in *BUF_P. This is a helper function for | |
1844 | target_read_alloc; see the declaration of that function for more | |
1845 | information. */ | |
13547ab6 | 1846 | |
159f81f3 DJ |
1847 | static LONGEST |
1848 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, | |
1849 | const char *annex, gdb_byte **buf_p, int padding) | |
13547ab6 DJ |
1850 | { |
1851 | size_t buf_alloc, buf_pos; | |
1852 | gdb_byte *buf; | |
13547ab6 DJ |
1853 | |
1854 | /* This function does not have a length parameter; it reads the | |
1855 | entire OBJECT). Also, it doesn't support objects fetched partly | |
1856 | from one target and partly from another (in a different stratum, | |
1857 | e.g. a core file and an executable). Both reasons make it | |
1858 | unsuitable for reading memory. */ | |
1859 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
1860 | ||
1861 | /* Start by reading up to 4K at a time. The target will throttle | |
1862 | this number down if necessary. */ | |
1863 | buf_alloc = 4096; | |
1864 | buf = xmalloc (buf_alloc); | |
1865 | buf_pos = 0; | |
1866 | while (1) | |
1867 | { | |
9b409511 YQ |
1868 | ULONGEST xfered_len; |
1869 | enum target_xfer_status status; | |
1870 | ||
1871 | status = target_read_partial (ops, object, annex, &buf[buf_pos], | |
1872 | buf_pos, buf_alloc - buf_pos - padding, | |
1873 | &xfered_len); | |
1874 | ||
1875 | if (status == TARGET_XFER_EOF) | |
13547ab6 DJ |
1876 | { |
1877 | /* Read all there was. */ | |
1878 | if (buf_pos == 0) | |
1879 | xfree (buf); | |
1880 | else | |
1881 | *buf_p = buf; | |
1882 | return buf_pos; | |
1883 | } | |
9b409511 YQ |
1884 | else if (status != TARGET_XFER_OK) |
1885 | { | |
1886 | /* An error occurred. */ | |
1887 | xfree (buf); | |
1888 | return TARGET_XFER_E_IO; | |
1889 | } | |
13547ab6 | 1890 | |
9b409511 | 1891 | buf_pos += xfered_len; |
13547ab6 DJ |
1892 | |
1893 | /* If the buffer is filling up, expand it. */ | |
1894 | if (buf_alloc < buf_pos * 2) | |
1895 | { | |
1896 | buf_alloc *= 2; | |
1897 | buf = xrealloc (buf, buf_alloc); | |
1898 | } | |
1899 | ||
1900 | QUIT; | |
1901 | } | |
1902 | } | |
1903 | ||
159f81f3 DJ |
1904 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
1905 | the size of the transferred data. See the declaration in "target.h" | |
1906 | function for more information about the return value. */ | |
1907 | ||
1908 | LONGEST | |
1909 | target_read_alloc (struct target_ops *ops, enum target_object object, | |
1910 | const char *annex, gdb_byte **buf_p) | |
1911 | { | |
1912 | return target_read_alloc_1 (ops, object, annex, buf_p, 0); | |
1913 | } | |
1914 | ||
1915 | /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and | |
1916 | returned as a string, allocated using xmalloc. If an error occurs | |
1917 | or the transfer is unsupported, NULL is returned. Empty objects | |
1918 | are returned as allocated but empty strings. A warning is issued | |
1919 | if the result contains any embedded NUL bytes. */ | |
1920 | ||
1921 | char * | |
1922 | target_read_stralloc (struct target_ops *ops, enum target_object object, | |
1923 | const char *annex) | |
1924 | { | |
39086a0e PA |
1925 | gdb_byte *buffer; |
1926 | char *bufstr; | |
7313baad | 1927 | LONGEST i, transferred; |
159f81f3 | 1928 | |
39086a0e PA |
1929 | transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1); |
1930 | bufstr = (char *) buffer; | |
159f81f3 DJ |
1931 | |
1932 | if (transferred < 0) | |
1933 | return NULL; | |
1934 | ||
1935 | if (transferred == 0) | |
1936 | return xstrdup (""); | |
1937 | ||
39086a0e | 1938 | bufstr[transferred] = 0; |
7313baad UW |
1939 | |
1940 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
39086a0e PA |
1941 | for (i = strlen (bufstr); i < transferred; i++) |
1942 | if (bufstr[i] != 0) | |
7313baad UW |
1943 | { |
1944 | warning (_("target object %d, annex %s, " | |
1945 | "contained unexpected null characters"), | |
1946 | (int) object, annex ? annex : "(none)"); | |
1947 | break; | |
1948 | } | |
159f81f3 | 1949 | |
39086a0e | 1950 | return bufstr; |
159f81f3 DJ |
1951 | } |
1952 | ||
b6591e8b AC |
1953 | /* Memory transfer methods. */ |
1954 | ||
1955 | void | |
1b0ba102 | 1956 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
1957 | LONGEST len) |
1958 | { | |
07b82ea5 PA |
1959 | /* This method is used to read from an alternate, non-current |
1960 | target. This read must bypass the overlay support (as symbols | |
1961 | don't match this target), and GDB's internal cache (wrong cache | |
1962 | for this target). */ | |
1963 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) | |
b6591e8b | 1964 | != len) |
578d3588 | 1965 | memory_error (TARGET_XFER_E_IO, addr); |
b6591e8b AC |
1966 | } |
1967 | ||
1968 | ULONGEST | |
5d502164 MS |
1969 | get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr, |
1970 | int len, enum bfd_endian byte_order) | |
b6591e8b | 1971 | { |
f6519ebc | 1972 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
1973 | |
1974 | gdb_assert (len <= sizeof (buf)); | |
1975 | get_target_memory (ops, addr, buf, len); | |
e17a4113 | 1976 | return extract_unsigned_integer (buf, len, byte_order); |
b6591e8b AC |
1977 | } |
1978 | ||
3db08215 MM |
1979 | /* See target.h. */ |
1980 | ||
d914c394 SS |
1981 | int |
1982 | target_insert_breakpoint (struct gdbarch *gdbarch, | |
1983 | struct bp_target_info *bp_tgt) | |
1984 | { | |
1985 | if (!may_insert_breakpoints) | |
1986 | { | |
1987 | warning (_("May not insert breakpoints")); | |
1988 | return 1; | |
1989 | } | |
1990 | ||
6b84065d TT |
1991 | return current_target.to_insert_breakpoint (¤t_target, |
1992 | gdbarch, bp_tgt); | |
d914c394 SS |
1993 | } |
1994 | ||
3db08215 MM |
1995 | /* See target.h. */ |
1996 | ||
d914c394 | 1997 | int |
6b84065d TT |
1998 | target_remove_breakpoint (struct gdbarch *gdbarch, |
1999 | struct bp_target_info *bp_tgt) | |
d914c394 SS |
2000 | { |
2001 | /* This is kind of a weird case to handle, but the permission might | |
2002 | have been changed after breakpoints were inserted - in which case | |
2003 | we should just take the user literally and assume that any | |
2004 | breakpoints should be left in place. */ | |
2005 | if (!may_insert_breakpoints) | |
2006 | { | |
2007 | warning (_("May not remove breakpoints")); | |
2008 | return 1; | |
2009 | } | |
2010 | ||
6b84065d TT |
2011 | return current_target.to_remove_breakpoint (¤t_target, |
2012 | gdbarch, bp_tgt); | |
d914c394 SS |
2013 | } |
2014 | ||
c906108c | 2015 | static void |
fba45db2 | 2016 | target_info (char *args, int from_tty) |
c906108c SS |
2017 | { |
2018 | struct target_ops *t; | |
c906108c | 2019 | int has_all_mem = 0; |
c5aa993b | 2020 | |
c906108c | 2021 | if (symfile_objfile != NULL) |
4262abfb JK |
2022 | printf_unfiltered (_("Symbols from \"%s\".\n"), |
2023 | objfile_name (symfile_objfile)); | |
c906108c | 2024 | |
258b763a | 2025 | for (t = target_stack; t != NULL; t = t->beneath) |
c906108c | 2026 | { |
c35b1492 | 2027 | if (!(*t->to_has_memory) (t)) |
c906108c SS |
2028 | continue; |
2029 | ||
c5aa993b | 2030 | if ((int) (t->to_stratum) <= (int) dummy_stratum) |
c906108c SS |
2031 | continue; |
2032 | if (has_all_mem) | |
3e43a32a MS |
2033 | printf_unfiltered (_("\tWhile running this, " |
2034 | "GDB does not access memory from...\n")); | |
c5aa993b JM |
2035 | printf_unfiltered ("%s:\n", t->to_longname); |
2036 | (t->to_files_info) (t); | |
c35b1492 | 2037 | has_all_mem = (*t->to_has_all_memory) (t); |
c906108c SS |
2038 | } |
2039 | } | |
2040 | ||
fd79ecee DJ |
2041 | /* This function is called before any new inferior is created, e.g. |
2042 | by running a program, attaching, or connecting to a target. | |
2043 | It cleans up any state from previous invocations which might | |
2044 | change between runs. This is a subset of what target_preopen | |
2045 | resets (things which might change between targets). */ | |
2046 | ||
2047 | void | |
2048 | target_pre_inferior (int from_tty) | |
2049 | { | |
c378eb4e | 2050 | /* Clear out solib state. Otherwise the solib state of the previous |
b9db4ced | 2051 | inferior might have survived and is entirely wrong for the new |
c378eb4e | 2052 | target. This has been observed on GNU/Linux using glibc 2.3. How |
b9db4ced UW |
2053 | to reproduce: |
2054 | ||
2055 | bash$ ./foo& | |
2056 | [1] 4711 | |
2057 | bash$ ./foo& | |
2058 | [1] 4712 | |
2059 | bash$ gdb ./foo | |
2060 | [...] | |
2061 | (gdb) attach 4711 | |
2062 | (gdb) detach | |
2063 | (gdb) attach 4712 | |
2064 | Cannot access memory at address 0xdeadbeef | |
2065 | */ | |
b9db4ced | 2066 | |
50c71eaf PA |
2067 | /* In some OSs, the shared library list is the same/global/shared |
2068 | across inferiors. If code is shared between processes, so are | |
2069 | memory regions and features. */ | |
f5656ead | 2070 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
50c71eaf PA |
2071 | { |
2072 | no_shared_libraries (NULL, from_tty); | |
2073 | ||
2074 | invalidate_target_mem_regions (); | |
424163ea | 2075 | |
50c71eaf PA |
2076 | target_clear_description (); |
2077 | } | |
8ffcbaaf YQ |
2078 | |
2079 | agent_capability_invalidate (); | |
fd79ecee DJ |
2080 | } |
2081 | ||
b8fa0bfa PA |
2082 | /* Callback for iterate_over_inferiors. Gets rid of the given |
2083 | inferior. */ | |
2084 | ||
2085 | static int | |
2086 | dispose_inferior (struct inferior *inf, void *args) | |
2087 | { | |
2088 | struct thread_info *thread; | |
2089 | ||
2090 | thread = any_thread_of_process (inf->pid); | |
2091 | if (thread) | |
2092 | { | |
2093 | switch_to_thread (thread->ptid); | |
2094 | ||
2095 | /* Core inferiors actually should be detached, not killed. */ | |
2096 | if (target_has_execution) | |
2097 | target_kill (); | |
2098 | else | |
2099 | target_detach (NULL, 0); | |
2100 | } | |
2101 | ||
2102 | return 0; | |
2103 | } | |
2104 | ||
c906108c SS |
2105 | /* This is to be called by the open routine before it does |
2106 | anything. */ | |
2107 | ||
2108 | void | |
fba45db2 | 2109 | target_preopen (int from_tty) |
c906108c | 2110 | { |
c5aa993b | 2111 | dont_repeat (); |
c906108c | 2112 | |
b8fa0bfa | 2113 | if (have_inferiors ()) |
c5aa993b | 2114 | { |
adf40b2e | 2115 | if (!from_tty |
b8fa0bfa PA |
2116 | || !have_live_inferiors () |
2117 | || query (_("A program is being debugged already. Kill it? "))) | |
2118 | iterate_over_inferiors (dispose_inferior, NULL); | |
c906108c | 2119 | else |
8a3fe4f8 | 2120 | error (_("Program not killed.")); |
c906108c SS |
2121 | } |
2122 | ||
2123 | /* Calling target_kill may remove the target from the stack. But if | |
2124 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
2125 | /* Leave the exec target, though. The user may be switching from a |
2126 | live process to a core of the same program. */ | |
460014f5 | 2127 | pop_all_targets_above (file_stratum); |
fd79ecee DJ |
2128 | |
2129 | target_pre_inferior (from_tty); | |
c906108c SS |
2130 | } |
2131 | ||
2132 | /* Detach a target after doing deferred register stores. */ | |
2133 | ||
2134 | void | |
52554a0e | 2135 | target_detach (const char *args, int from_tty) |
c906108c | 2136 | { |
136d6dae VP |
2137 | struct target_ops* t; |
2138 | ||
f5656ead | 2139 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
2140 | /* Don't remove global breakpoints here. They're removed on |
2141 | disconnection from the target. */ | |
2142 | ; | |
2143 | else | |
2144 | /* If we're in breakpoints-always-inserted mode, have to remove | |
2145 | them before detaching. */ | |
dfd4cc63 | 2146 | remove_breakpoints_pid (ptid_get_pid (inferior_ptid)); |
74960c60 | 2147 | |
24291992 PA |
2148 | prepare_for_detach (); |
2149 | ||
09da0d0a | 2150 | current_target.to_detach (¤t_target, args, from_tty); |
c906108c SS |
2151 | } |
2152 | ||
6ad8ae5c | 2153 | void |
fee354ee | 2154 | target_disconnect (const char *args, int from_tty) |
6ad8ae5c | 2155 | { |
50c71eaf PA |
2156 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
2157 | are global across processes, we have to remove them before | |
2158 | disconnecting. */ | |
74960c60 VP |
2159 | remove_breakpoints (); |
2160 | ||
86a0854a | 2161 | current_target.to_disconnect (¤t_target, args, from_tty); |
6ad8ae5c DJ |
2162 | } |
2163 | ||
117de6a9 | 2164 | ptid_t |
47608cb1 | 2165 | target_wait (ptid_t ptid, struct target_waitstatus *status, int options) |
117de6a9 | 2166 | { |
a7068b60 | 2167 | return (current_target.to_wait) (¤t_target, ptid, status, options); |
117de6a9 PA |
2168 | } |
2169 | ||
2170 | char * | |
2171 | target_pid_to_str (ptid_t ptid) | |
2172 | { | |
770234d3 | 2173 | return (*current_target.to_pid_to_str) (¤t_target, ptid); |
117de6a9 PA |
2174 | } |
2175 | ||
4694da01 TT |
2176 | char * |
2177 | target_thread_name (struct thread_info *info) | |
2178 | { | |
825828fc | 2179 | return current_target.to_thread_name (¤t_target, info); |
4694da01 TT |
2180 | } |
2181 | ||
e1ac3328 | 2182 | void |
2ea28649 | 2183 | target_resume (ptid_t ptid, int step, enum gdb_signal signal) |
e1ac3328 | 2184 | { |
28439f5e PA |
2185 | struct target_ops *t; |
2186 | ||
4e5d721f | 2187 | target_dcache_invalidate (); |
28439f5e | 2188 | |
6b84065d | 2189 | current_target.to_resume (¤t_target, ptid, step, signal); |
28439f5e | 2190 | |
6b84065d | 2191 | registers_changed_ptid (ptid); |
251bde03 PA |
2192 | /* We only set the internal executing state here. The user/frontend |
2193 | running state is set at a higher level. */ | |
6b84065d | 2194 | set_executing (ptid, 1); |
6b84065d | 2195 | clear_inline_frame_state (ptid); |
e1ac3328 | 2196 | } |
2455069d UW |
2197 | |
2198 | void | |
2199 | target_pass_signals (int numsigs, unsigned char *pass_signals) | |
2200 | { | |
035cad7f | 2201 | (*current_target.to_pass_signals) (¤t_target, numsigs, pass_signals); |
2455069d UW |
2202 | } |
2203 | ||
9b224c5e PA |
2204 | void |
2205 | target_program_signals (int numsigs, unsigned char *program_signals) | |
2206 | { | |
7d4f8efa TT |
2207 | (*current_target.to_program_signals) (¤t_target, |
2208 | numsigs, program_signals); | |
9b224c5e PA |
2209 | } |
2210 | ||
098dba18 TT |
2211 | static int |
2212 | default_follow_fork (struct target_ops *self, int follow_child, | |
2213 | int detach_fork) | |
2214 | { | |
2215 | /* Some target returned a fork event, but did not know how to follow it. */ | |
2216 | internal_error (__FILE__, __LINE__, | |
2217 | _("could not find a target to follow fork")); | |
2218 | } | |
2219 | ||
ee057212 DJ |
2220 | /* Look through the list of possible targets for a target that can |
2221 | follow forks. */ | |
2222 | ||
2223 | int | |
07107ca6 | 2224 | target_follow_fork (int follow_child, int detach_fork) |
ee057212 | 2225 | { |
a7068b60 TT |
2226 | return current_target.to_follow_fork (¤t_target, |
2227 | follow_child, detach_fork); | |
ee057212 DJ |
2228 | } |
2229 | ||
8d657035 TT |
2230 | static void |
2231 | default_mourn_inferior (struct target_ops *self) | |
2232 | { | |
2233 | internal_error (__FILE__, __LINE__, | |
2234 | _("could not find a target to follow mourn inferior")); | |
2235 | } | |
2236 | ||
136d6dae VP |
2237 | void |
2238 | target_mourn_inferior (void) | |
2239 | { | |
8d657035 | 2240 | current_target.to_mourn_inferior (¤t_target); |
136d6dae | 2241 | |
8d657035 TT |
2242 | /* We no longer need to keep handles on any of the object files. |
2243 | Make sure to release them to avoid unnecessarily locking any | |
2244 | of them while we're not actually debugging. */ | |
2245 | bfd_cache_close_all (); | |
136d6dae VP |
2246 | } |
2247 | ||
424163ea DJ |
2248 | /* Look for a target which can describe architectural features, starting |
2249 | from TARGET. If we find one, return its description. */ | |
2250 | ||
2251 | const struct target_desc * | |
2252 | target_read_description (struct target_ops *target) | |
2253 | { | |
2117c711 | 2254 | return target->to_read_description (target); |
424163ea DJ |
2255 | } |
2256 | ||
58a5184e | 2257 | /* This implements a basic search of memory, reading target memory and |
08388c79 DE |
2258 | performing the search here (as opposed to performing the search in on the |
2259 | target side with, for example, gdbserver). */ | |
2260 | ||
2261 | int | |
2262 | simple_search_memory (struct target_ops *ops, | |
2263 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2264 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2265 | CORE_ADDR *found_addrp) | |
2266 | { | |
2267 | /* NOTE: also defined in find.c testcase. */ | |
2268 | #define SEARCH_CHUNK_SIZE 16000 | |
2269 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
2270 | /* Buffer to hold memory contents for searching. */ | |
2271 | gdb_byte *search_buf; | |
2272 | unsigned search_buf_size; | |
2273 | struct cleanup *old_cleanups; | |
2274 | ||
2275 | search_buf_size = chunk_size + pattern_len - 1; | |
2276 | ||
2277 | /* No point in trying to allocate a buffer larger than the search space. */ | |
2278 | if (search_space_len < search_buf_size) | |
2279 | search_buf_size = search_space_len; | |
2280 | ||
2281 | search_buf = malloc (search_buf_size); | |
2282 | if (search_buf == NULL) | |
5e1471f5 | 2283 | error (_("Unable to allocate memory to perform the search.")); |
08388c79 DE |
2284 | old_cleanups = make_cleanup (free_current_contents, &search_buf); |
2285 | ||
2286 | /* Prime the search buffer. */ | |
2287 | ||
2288 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2289 | search_buf, start_addr, search_buf_size) != search_buf_size) | |
2290 | { | |
b3dc46ff AB |
2291 | warning (_("Unable to access %s bytes of target " |
2292 | "memory at %s, halting search."), | |
2293 | pulongest (search_buf_size), hex_string (start_addr)); | |
08388c79 DE |
2294 | do_cleanups (old_cleanups); |
2295 | return -1; | |
2296 | } | |
2297 | ||
2298 | /* Perform the search. | |
2299 | ||
2300 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
2301 | When we've scanned N bytes we copy the trailing bytes to the start and | |
2302 | read in another N bytes. */ | |
2303 | ||
2304 | while (search_space_len >= pattern_len) | |
2305 | { | |
2306 | gdb_byte *found_ptr; | |
2307 | unsigned nr_search_bytes = min (search_space_len, search_buf_size); | |
2308 | ||
2309 | found_ptr = memmem (search_buf, nr_search_bytes, | |
2310 | pattern, pattern_len); | |
2311 | ||
2312 | if (found_ptr != NULL) | |
2313 | { | |
2314 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
5d502164 | 2315 | |
08388c79 DE |
2316 | *found_addrp = found_addr; |
2317 | do_cleanups (old_cleanups); | |
2318 | return 1; | |
2319 | } | |
2320 | ||
2321 | /* Not found in this chunk, skip to next chunk. */ | |
2322 | ||
2323 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
2324 | if (search_space_len >= chunk_size) | |
2325 | search_space_len -= chunk_size; | |
2326 | else | |
2327 | search_space_len = 0; | |
2328 | ||
2329 | if (search_space_len >= pattern_len) | |
2330 | { | |
2331 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 2332 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
2333 | int nr_to_read; |
2334 | ||
2335 | /* Copy the trailing part of the previous iteration to the front | |
2336 | of the buffer for the next iteration. */ | |
2337 | gdb_assert (keep_len == pattern_len - 1); | |
2338 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
2339 | ||
2340 | nr_to_read = min (search_space_len - keep_len, chunk_size); | |
2341 | ||
2342 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2343 | search_buf + keep_len, read_addr, | |
2344 | nr_to_read) != nr_to_read) | |
2345 | { | |
b3dc46ff | 2346 | warning (_("Unable to access %s bytes of target " |
9b20d036 | 2347 | "memory at %s, halting search."), |
b3dc46ff | 2348 | plongest (nr_to_read), |
08388c79 DE |
2349 | hex_string (read_addr)); |
2350 | do_cleanups (old_cleanups); | |
2351 | return -1; | |
2352 | } | |
2353 | ||
2354 | start_addr += chunk_size; | |
2355 | } | |
2356 | } | |
2357 | ||
2358 | /* Not found. */ | |
2359 | ||
2360 | do_cleanups (old_cleanups); | |
2361 | return 0; | |
2362 | } | |
2363 | ||
58a5184e TT |
2364 | /* Default implementation of memory-searching. */ |
2365 | ||
2366 | static int | |
2367 | default_search_memory (struct target_ops *self, | |
2368 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2369 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2370 | CORE_ADDR *found_addrp) | |
2371 | { | |
2372 | /* Start over from the top of the target stack. */ | |
2373 | return simple_search_memory (current_target.beneath, | |
2374 | start_addr, search_space_len, | |
2375 | pattern, pattern_len, found_addrp); | |
2376 | } | |
2377 | ||
08388c79 DE |
2378 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the |
2379 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2380 | ||
2381 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2382 | requiring halting of the search (e.g. memory read error). | |
2383 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2384 | ||
2385 | int | |
2386 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2387 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2388 | CORE_ADDR *found_addrp) | |
2389 | { | |
a7068b60 TT |
2390 | return current_target.to_search_memory (¤t_target, start_addr, |
2391 | search_space_len, | |
2392 | pattern, pattern_len, found_addrp); | |
08388c79 DE |
2393 | } |
2394 | ||
8edfe269 DJ |
2395 | /* Look through the currently pushed targets. If none of them will |
2396 | be able to restart the currently running process, issue an error | |
2397 | message. */ | |
2398 | ||
2399 | void | |
2400 | target_require_runnable (void) | |
2401 | { | |
2402 | struct target_ops *t; | |
2403 | ||
2404 | for (t = target_stack; t != NULL; t = t->beneath) | |
2405 | { | |
2406 | /* If this target knows how to create a new program, then | |
2407 | assume we will still be able to after killing the current | |
2408 | one. Either killing and mourning will not pop T, or else | |
2409 | find_default_run_target will find it again. */ | |
2410 | if (t->to_create_inferior != NULL) | |
2411 | return; | |
2412 | ||
548740d6 | 2413 | /* Do not worry about targets at certain strata that can not |
8edfe269 DJ |
2414 | create inferiors. Assume they will be pushed again if |
2415 | necessary, and continue to the process_stratum. */ | |
85e747d2 | 2416 | if (t->to_stratum == thread_stratum |
548740d6 | 2417 | || t->to_stratum == record_stratum |
85e747d2 | 2418 | || t->to_stratum == arch_stratum) |
8edfe269 DJ |
2419 | continue; |
2420 | ||
3e43a32a MS |
2421 | error (_("The \"%s\" target does not support \"run\". " |
2422 | "Try \"help target\" or \"continue\"."), | |
8edfe269 DJ |
2423 | t->to_shortname); |
2424 | } | |
2425 | ||
2426 | /* This function is only called if the target is running. In that | |
2427 | case there should have been a process_stratum target and it | |
c378eb4e | 2428 | should either know how to create inferiors, or not... */ |
9b20d036 | 2429 | internal_error (__FILE__, __LINE__, _("No targets found")); |
8edfe269 DJ |
2430 | } |
2431 | ||
6a3cb8e8 PA |
2432 | /* Whether GDB is allowed to fall back to the default run target for |
2433 | "run", "attach", etc. when no target is connected yet. */ | |
2434 | static int auto_connect_native_target = 1; | |
2435 | ||
2436 | static void | |
2437 | show_auto_connect_native_target (struct ui_file *file, int from_tty, | |
2438 | struct cmd_list_element *c, const char *value) | |
2439 | { | |
2440 | fprintf_filtered (file, | |
2441 | _("Whether GDB may automatically connect to the " | |
2442 | "native target is %s.\n"), | |
2443 | value); | |
2444 | } | |
2445 | ||
c906108c SS |
2446 | /* Look through the list of possible targets for a target that can |
2447 | execute a run or attach command without any other data. This is | |
2448 | used to locate the default process stratum. | |
2449 | ||
5f667f2d PA |
2450 | If DO_MESG is not NULL, the result is always valid (error() is |
2451 | called for errors); else, return NULL on error. */ | |
c906108c SS |
2452 | |
2453 | static struct target_ops * | |
fba45db2 | 2454 | find_default_run_target (char *do_mesg) |
c906108c | 2455 | { |
c906108c | 2456 | struct target_ops *runable = NULL; |
c906108c | 2457 | |
6a3cb8e8 | 2458 | if (auto_connect_native_target) |
c906108c | 2459 | { |
89a1c21a | 2460 | struct target_ops *t; |
6a3cb8e8 | 2461 | int count = 0; |
89a1c21a | 2462 | int i; |
6a3cb8e8 | 2463 | |
89a1c21a | 2464 | for (i = 0; VEC_iterate (target_ops_p, target_structs, i, t); ++i) |
c906108c | 2465 | { |
89a1c21a | 2466 | if (t->to_can_run != delegate_can_run && target_can_run (t)) |
6a3cb8e8 | 2467 | { |
89a1c21a | 2468 | runable = t; |
6a3cb8e8 PA |
2469 | ++count; |
2470 | } | |
c906108c | 2471 | } |
6a3cb8e8 PA |
2472 | |
2473 | if (count != 1) | |
2474 | runable = NULL; | |
c906108c SS |
2475 | } |
2476 | ||
6a3cb8e8 | 2477 | if (runable == NULL) |
5f667f2d PA |
2478 | { |
2479 | if (do_mesg) | |
2480 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
2481 | else | |
2482 | return NULL; | |
2483 | } | |
c906108c SS |
2484 | |
2485 | return runable; | |
2486 | } | |
2487 | ||
b3ccfe11 | 2488 | /* See target.h. */ |
c906108c | 2489 | |
b3ccfe11 TT |
2490 | struct target_ops * |
2491 | find_attach_target (void) | |
c906108c SS |
2492 | { |
2493 | struct target_ops *t; | |
2494 | ||
b3ccfe11 TT |
2495 | /* If a target on the current stack can attach, use it. */ |
2496 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2497 | { | |
2498 | if (t->to_attach != NULL) | |
2499 | break; | |
2500 | } | |
c906108c | 2501 | |
b3ccfe11 TT |
2502 | /* Otherwise, use the default run target for attaching. */ |
2503 | if (t == NULL) | |
2504 | t = find_default_run_target ("attach"); | |
b84876c2 | 2505 | |
b3ccfe11 | 2506 | return t; |
b84876c2 PA |
2507 | } |
2508 | ||
b3ccfe11 | 2509 | /* See target.h. */ |
b84876c2 | 2510 | |
b3ccfe11 TT |
2511 | struct target_ops * |
2512 | find_run_target (void) | |
9908b566 VP |
2513 | { |
2514 | struct target_ops *t; | |
2515 | ||
b3ccfe11 TT |
2516 | /* If a target on the current stack can attach, use it. */ |
2517 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2518 | { | |
2519 | if (t->to_create_inferior != NULL) | |
2520 | break; | |
2521 | } | |
5d502164 | 2522 | |
b3ccfe11 TT |
2523 | /* Otherwise, use the default run target. */ |
2524 | if (t == NULL) | |
2525 | t = find_default_run_target ("run"); | |
9908b566 | 2526 | |
b3ccfe11 | 2527 | return t; |
9908b566 VP |
2528 | } |
2529 | ||
145b16a9 UW |
2530 | /* Implement the "info proc" command. */ |
2531 | ||
451b7c33 | 2532 | int |
7bc112c1 | 2533 | target_info_proc (const char *args, enum info_proc_what what) |
145b16a9 UW |
2534 | { |
2535 | struct target_ops *t; | |
2536 | ||
2537 | /* If we're already connected to something that can get us OS | |
2538 | related data, use it. Otherwise, try using the native | |
2539 | target. */ | |
2540 | if (current_target.to_stratum >= process_stratum) | |
2541 | t = current_target.beneath; | |
2542 | else | |
2543 | t = find_default_run_target (NULL); | |
2544 | ||
2545 | for (; t != NULL; t = t->beneath) | |
2546 | { | |
2547 | if (t->to_info_proc != NULL) | |
2548 | { | |
2549 | t->to_info_proc (t, args, what); | |
2550 | ||
2551 | if (targetdebug) | |
2552 | fprintf_unfiltered (gdb_stdlog, | |
2553 | "target_info_proc (\"%s\", %d)\n", args, what); | |
2554 | ||
451b7c33 | 2555 | return 1; |
145b16a9 UW |
2556 | } |
2557 | } | |
2558 | ||
451b7c33 | 2559 | return 0; |
145b16a9 UW |
2560 | } |
2561 | ||
03583c20 | 2562 | static int |
2bfc0540 | 2563 | find_default_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
2564 | { |
2565 | struct target_ops *t; | |
2566 | ||
2567 | t = find_default_run_target (NULL); | |
2568 | if (t && t->to_supports_disable_randomization) | |
2bfc0540 | 2569 | return (t->to_supports_disable_randomization) (t); |
03583c20 UW |
2570 | return 0; |
2571 | } | |
2572 | ||
2573 | int | |
2574 | target_supports_disable_randomization (void) | |
2575 | { | |
2576 | struct target_ops *t; | |
2577 | ||
2578 | for (t = ¤t_target; t != NULL; t = t->beneath) | |
2579 | if (t->to_supports_disable_randomization) | |
2bfc0540 | 2580 | return t->to_supports_disable_randomization (t); |
03583c20 UW |
2581 | |
2582 | return 0; | |
2583 | } | |
9908b566 | 2584 | |
07e059b5 VP |
2585 | char * |
2586 | target_get_osdata (const char *type) | |
2587 | { | |
07e059b5 VP |
2588 | struct target_ops *t; |
2589 | ||
739ef7fb PA |
2590 | /* If we're already connected to something that can get us OS |
2591 | related data, use it. Otherwise, try using the native | |
2592 | target. */ | |
2593 | if (current_target.to_stratum >= process_stratum) | |
6d097e65 | 2594 | t = current_target.beneath; |
739ef7fb PA |
2595 | else |
2596 | t = find_default_run_target ("get OS data"); | |
07e059b5 VP |
2597 | |
2598 | if (!t) | |
2599 | return NULL; | |
2600 | ||
6d097e65 | 2601 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
2602 | } |
2603 | ||
8eaff7cd TT |
2604 | static struct address_space * |
2605 | default_thread_address_space (struct target_ops *self, ptid_t ptid) | |
6c95b8df PA |
2606 | { |
2607 | struct inferior *inf; | |
6c95b8df PA |
2608 | |
2609 | /* Fall-back to the "main" address space of the inferior. */ | |
2610 | inf = find_inferior_pid (ptid_get_pid (ptid)); | |
2611 | ||
2612 | if (inf == NULL || inf->aspace == NULL) | |
3e43a32a | 2613 | internal_error (__FILE__, __LINE__, |
9b20d036 MS |
2614 | _("Can't determine the current " |
2615 | "address space of thread %s\n"), | |
6c95b8df PA |
2616 | target_pid_to_str (ptid)); |
2617 | ||
2618 | return inf->aspace; | |
2619 | } | |
2620 | ||
8eaff7cd TT |
2621 | /* Determine the current address space of thread PTID. */ |
2622 | ||
2623 | struct address_space * | |
2624 | target_thread_address_space (ptid_t ptid) | |
2625 | { | |
2626 | struct address_space *aspace; | |
2627 | ||
2628 | aspace = current_target.to_thread_address_space (¤t_target, ptid); | |
2629 | gdb_assert (aspace != NULL); | |
2630 | ||
8eaff7cd TT |
2631 | return aspace; |
2632 | } | |
2633 | ||
7313baad UW |
2634 | |
2635 | /* Target file operations. */ | |
2636 | ||
2637 | static struct target_ops * | |
2638 | default_fileio_target (void) | |
2639 | { | |
2640 | /* If we're already connected to something that can perform | |
2641 | file I/O, use it. Otherwise, try using the native target. */ | |
2642 | if (current_target.to_stratum >= process_stratum) | |
2643 | return current_target.beneath; | |
2644 | else | |
2645 | return find_default_run_target ("file I/O"); | |
2646 | } | |
2647 | ||
2648 | /* Open FILENAME on the target, using FLAGS and MODE. Return a | |
2649 | target file descriptor, or -1 if an error occurs (and set | |
2650 | *TARGET_ERRNO). */ | |
2651 | int | |
2652 | target_fileio_open (const char *filename, int flags, int mode, | |
2653 | int *target_errno) | |
2654 | { | |
2655 | struct target_ops *t; | |
2656 | ||
2657 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2658 | { | |
2659 | if (t->to_fileio_open != NULL) | |
2660 | { | |
cd897586 | 2661 | int fd = t->to_fileio_open (t, filename, flags, mode, target_errno); |
7313baad UW |
2662 | |
2663 | if (targetdebug) | |
2664 | fprintf_unfiltered (gdb_stdlog, | |
2665 | "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n", | |
2666 | filename, flags, mode, | |
2667 | fd, fd != -1 ? 0 : *target_errno); | |
2668 | return fd; | |
2669 | } | |
2670 | } | |
2671 | ||
2672 | *target_errno = FILEIO_ENOSYS; | |
2673 | return -1; | |
2674 | } | |
2675 | ||
2676 | /* Write up to LEN bytes from WRITE_BUF to FD on the target. | |
2677 | Return the number of bytes written, or -1 if an error occurs | |
2678 | (and set *TARGET_ERRNO). */ | |
2679 | int | |
2680 | target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
2681 | ULONGEST offset, int *target_errno) | |
2682 | { | |
2683 | struct target_ops *t; | |
2684 | ||
2685 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2686 | { | |
2687 | if (t->to_fileio_pwrite != NULL) | |
2688 | { | |
0d866f62 | 2689 | int ret = t->to_fileio_pwrite (t, fd, write_buf, len, offset, |
7313baad UW |
2690 | target_errno); |
2691 | ||
2692 | if (targetdebug) | |
2693 | fprintf_unfiltered (gdb_stdlog, | |
a71b5a38 | 2694 | "target_fileio_pwrite (%d,...,%d,%s) " |
7313baad | 2695 | "= %d (%d)\n", |
a71b5a38 | 2696 | fd, len, pulongest (offset), |
7313baad UW |
2697 | ret, ret != -1 ? 0 : *target_errno); |
2698 | return ret; | |
2699 | } | |
2700 | } | |
2701 | ||
2702 | *target_errno = FILEIO_ENOSYS; | |
2703 | return -1; | |
2704 | } | |
2705 | ||
2706 | /* Read up to LEN bytes FD on the target into READ_BUF. | |
2707 | Return the number of bytes read, or -1 if an error occurs | |
2708 | (and set *TARGET_ERRNO). */ | |
2709 | int | |
2710 | target_fileio_pread (int fd, gdb_byte *read_buf, int len, | |
2711 | ULONGEST offset, int *target_errno) | |
2712 | { | |
2713 | struct target_ops *t; | |
2714 | ||
2715 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2716 | { | |
2717 | if (t->to_fileio_pread != NULL) | |
2718 | { | |
a3be983c | 2719 | int ret = t->to_fileio_pread (t, fd, read_buf, len, offset, |
7313baad UW |
2720 | target_errno); |
2721 | ||
2722 | if (targetdebug) | |
2723 | fprintf_unfiltered (gdb_stdlog, | |
a71b5a38 | 2724 | "target_fileio_pread (%d,...,%d,%s) " |
7313baad | 2725 | "= %d (%d)\n", |
a71b5a38 | 2726 | fd, len, pulongest (offset), |
7313baad UW |
2727 | ret, ret != -1 ? 0 : *target_errno); |
2728 | return ret; | |
2729 | } | |
2730 | } | |
2731 | ||
2732 | *target_errno = FILEIO_ENOSYS; | |
2733 | return -1; | |
2734 | } | |
2735 | ||
2736 | /* Close FD on the target. Return 0, or -1 if an error occurs | |
2737 | (and set *TARGET_ERRNO). */ | |
2738 | int | |
2739 | target_fileio_close (int fd, int *target_errno) | |
2740 | { | |
2741 | struct target_ops *t; | |
2742 | ||
2743 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2744 | { | |
2745 | if (t->to_fileio_close != NULL) | |
2746 | { | |
df39ea25 | 2747 | int ret = t->to_fileio_close (t, fd, target_errno); |
7313baad UW |
2748 | |
2749 | if (targetdebug) | |
2750 | fprintf_unfiltered (gdb_stdlog, | |
2751 | "target_fileio_close (%d) = %d (%d)\n", | |
2752 | fd, ret, ret != -1 ? 0 : *target_errno); | |
2753 | return ret; | |
2754 | } | |
2755 | } | |
2756 | ||
2757 | *target_errno = FILEIO_ENOSYS; | |
2758 | return -1; | |
2759 | } | |
2760 | ||
2761 | /* Unlink FILENAME on the target. Return 0, or -1 if an error | |
2762 | occurs (and set *TARGET_ERRNO). */ | |
2763 | int | |
2764 | target_fileio_unlink (const char *filename, int *target_errno) | |
2765 | { | |
2766 | struct target_ops *t; | |
2767 | ||
2768 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2769 | { | |
2770 | if (t->to_fileio_unlink != NULL) | |
2771 | { | |
dbbca37d | 2772 | int ret = t->to_fileio_unlink (t, filename, target_errno); |
7313baad UW |
2773 | |
2774 | if (targetdebug) | |
2775 | fprintf_unfiltered (gdb_stdlog, | |
2776 | "target_fileio_unlink (%s) = %d (%d)\n", | |
2777 | filename, ret, ret != -1 ? 0 : *target_errno); | |
2778 | return ret; | |
2779 | } | |
2780 | } | |
2781 | ||
2782 | *target_errno = FILEIO_ENOSYS; | |
2783 | return -1; | |
2784 | } | |
2785 | ||
b9e7b9c3 UW |
2786 | /* Read value of symbolic link FILENAME on the target. Return a |
2787 | null-terminated string allocated via xmalloc, or NULL if an error | |
2788 | occurs (and set *TARGET_ERRNO). */ | |
2789 | char * | |
2790 | target_fileio_readlink (const char *filename, int *target_errno) | |
2791 | { | |
2792 | struct target_ops *t; | |
2793 | ||
2794 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2795 | { | |
2796 | if (t->to_fileio_readlink != NULL) | |
2797 | { | |
fab5aa7c | 2798 | char *ret = t->to_fileio_readlink (t, filename, target_errno); |
b9e7b9c3 UW |
2799 | |
2800 | if (targetdebug) | |
2801 | fprintf_unfiltered (gdb_stdlog, | |
2802 | "target_fileio_readlink (%s) = %s (%d)\n", | |
2803 | filename, ret? ret : "(nil)", | |
2804 | ret? 0 : *target_errno); | |
2805 | return ret; | |
2806 | } | |
2807 | } | |
2808 | ||
2809 | *target_errno = FILEIO_ENOSYS; | |
2810 | return NULL; | |
2811 | } | |
2812 | ||
7313baad UW |
2813 | static void |
2814 | target_fileio_close_cleanup (void *opaque) | |
2815 | { | |
2816 | int fd = *(int *) opaque; | |
2817 | int target_errno; | |
2818 | ||
2819 | target_fileio_close (fd, &target_errno); | |
2820 | } | |
2821 | ||
2822 | /* Read target file FILENAME. Store the result in *BUF_P and | |
2823 | return the size of the transferred data. PADDING additional bytes are | |
2824 | available in *BUF_P. This is a helper function for | |
2825 | target_fileio_read_alloc; see the declaration of that function for more | |
2826 | information. */ | |
2827 | ||
2828 | static LONGEST | |
2829 | target_fileio_read_alloc_1 (const char *filename, | |
2830 | gdb_byte **buf_p, int padding) | |
2831 | { | |
2832 | struct cleanup *close_cleanup; | |
2833 | size_t buf_alloc, buf_pos; | |
2834 | gdb_byte *buf; | |
2835 | LONGEST n; | |
2836 | int fd; | |
2837 | int target_errno; | |
2838 | ||
2839 | fd = target_fileio_open (filename, FILEIO_O_RDONLY, 0700, &target_errno); | |
2840 | if (fd == -1) | |
2841 | return -1; | |
2842 | ||
2843 | close_cleanup = make_cleanup (target_fileio_close_cleanup, &fd); | |
2844 | ||
2845 | /* Start by reading up to 4K at a time. The target will throttle | |
2846 | this number down if necessary. */ | |
2847 | buf_alloc = 4096; | |
2848 | buf = xmalloc (buf_alloc); | |
2849 | buf_pos = 0; | |
2850 | while (1) | |
2851 | { | |
2852 | n = target_fileio_pread (fd, &buf[buf_pos], | |
2853 | buf_alloc - buf_pos - padding, buf_pos, | |
2854 | &target_errno); | |
2855 | if (n < 0) | |
2856 | { | |
2857 | /* An error occurred. */ | |
2858 | do_cleanups (close_cleanup); | |
2859 | xfree (buf); | |
2860 | return -1; | |
2861 | } | |
2862 | else if (n == 0) | |
2863 | { | |
2864 | /* Read all there was. */ | |
2865 | do_cleanups (close_cleanup); | |
2866 | if (buf_pos == 0) | |
2867 | xfree (buf); | |
2868 | else | |
2869 | *buf_p = buf; | |
2870 | return buf_pos; | |
2871 | } | |
2872 | ||
2873 | buf_pos += n; | |
2874 | ||
2875 | /* If the buffer is filling up, expand it. */ | |
2876 | if (buf_alloc < buf_pos * 2) | |
2877 | { | |
2878 | buf_alloc *= 2; | |
2879 | buf = xrealloc (buf, buf_alloc); | |
2880 | } | |
2881 | ||
2882 | QUIT; | |
2883 | } | |
2884 | } | |
2885 | ||
2886 | /* Read target file FILENAME. Store the result in *BUF_P and return | |
2887 | the size of the transferred data. See the declaration in "target.h" | |
2888 | function for more information about the return value. */ | |
2889 | ||
2890 | LONGEST | |
2891 | target_fileio_read_alloc (const char *filename, gdb_byte **buf_p) | |
2892 | { | |
2893 | return target_fileio_read_alloc_1 (filename, buf_p, 0); | |
2894 | } | |
2895 | ||
2896 | /* Read target file FILENAME. The result is NUL-terminated and | |
2897 | returned as a string, allocated using xmalloc. If an error occurs | |
2898 | or the transfer is unsupported, NULL is returned. Empty objects | |
2899 | are returned as allocated but empty strings. A warning is issued | |
2900 | if the result contains any embedded NUL bytes. */ | |
2901 | ||
2902 | char * | |
2903 | target_fileio_read_stralloc (const char *filename) | |
2904 | { | |
39086a0e PA |
2905 | gdb_byte *buffer; |
2906 | char *bufstr; | |
7313baad UW |
2907 | LONGEST i, transferred; |
2908 | ||
39086a0e PA |
2909 | transferred = target_fileio_read_alloc_1 (filename, &buffer, 1); |
2910 | bufstr = (char *) buffer; | |
7313baad UW |
2911 | |
2912 | if (transferred < 0) | |
2913 | return NULL; | |
2914 | ||
2915 | if (transferred == 0) | |
2916 | return xstrdup (""); | |
2917 | ||
39086a0e | 2918 | bufstr[transferred] = 0; |
7313baad UW |
2919 | |
2920 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
39086a0e PA |
2921 | for (i = strlen (bufstr); i < transferred; i++) |
2922 | if (bufstr[i] != 0) | |
7313baad UW |
2923 | { |
2924 | warning (_("target file %s " | |
2925 | "contained unexpected null characters"), | |
2926 | filename); | |
2927 | break; | |
2928 | } | |
2929 | ||
39086a0e | 2930 | return bufstr; |
7313baad UW |
2931 | } |
2932 | ||
2933 | ||
e0d24f8d | 2934 | static int |
31568a15 TT |
2935 | default_region_ok_for_hw_watchpoint (struct target_ops *self, |
2936 | CORE_ADDR addr, int len) | |
e0d24f8d | 2937 | { |
f5656ead | 2938 | return (len <= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT); |
ccaa32c7 GS |
2939 | } |
2940 | ||
5009afc5 AS |
2941 | static int |
2942 | default_watchpoint_addr_within_range (struct target_ops *target, | |
2943 | CORE_ADDR addr, | |
2944 | CORE_ADDR start, int length) | |
2945 | { | |
2946 | return addr >= start && addr < start + length; | |
2947 | } | |
2948 | ||
c2250ad1 UW |
2949 | static struct gdbarch * |
2950 | default_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
2951 | { | |
f5656ead | 2952 | return target_gdbarch (); |
c2250ad1 UW |
2953 | } |
2954 | ||
c906108c | 2955 | static int |
555bbdeb TT |
2956 | return_zero (struct target_ops *ignore) |
2957 | { | |
2958 | return 0; | |
2959 | } | |
2960 | ||
2961 | static int | |
2962 | return_zero_has_execution (struct target_ops *ignore, ptid_t ignore2) | |
c906108c SS |
2963 | { |
2964 | return 0; | |
2965 | } | |
2966 | ||
ed9a39eb JM |
2967 | /* |
2968 | * Find the next target down the stack from the specified target. | |
2969 | */ | |
2970 | ||
2971 | struct target_ops * | |
fba45db2 | 2972 | find_target_beneath (struct target_ops *t) |
ed9a39eb | 2973 | { |
258b763a | 2974 | return t->beneath; |
ed9a39eb JM |
2975 | } |
2976 | ||
8b06beed TT |
2977 | /* See target.h. */ |
2978 | ||
2979 | struct target_ops * | |
2980 | find_target_at (enum strata stratum) | |
2981 | { | |
2982 | struct target_ops *t; | |
2983 | ||
2984 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2985 | if (t->to_stratum == stratum) | |
2986 | return t; | |
2987 | ||
2988 | return NULL; | |
2989 | } | |
2990 | ||
c906108c SS |
2991 | \f |
2992 | /* The inferior process has died. Long live the inferior! */ | |
2993 | ||
2994 | void | |
fba45db2 | 2995 | generic_mourn_inferior (void) |
c906108c | 2996 | { |
7f9f62ba | 2997 | ptid_t ptid; |
c906108c | 2998 | |
7f9f62ba | 2999 | ptid = inferior_ptid; |
39f77062 | 3000 | inferior_ptid = null_ptid; |
7f9f62ba | 3001 | |
f59f708a PA |
3002 | /* Mark breakpoints uninserted in case something tries to delete a |
3003 | breakpoint while we delete the inferior's threads (which would | |
3004 | fail, since the inferior is long gone). */ | |
3005 | mark_breakpoints_out (); | |
3006 | ||
7f9f62ba PA |
3007 | if (!ptid_equal (ptid, null_ptid)) |
3008 | { | |
3009 | int pid = ptid_get_pid (ptid); | |
6c95b8df | 3010 | exit_inferior (pid); |
7f9f62ba PA |
3011 | } |
3012 | ||
f59f708a PA |
3013 | /* Note this wipes step-resume breakpoints, so needs to be done |
3014 | after exit_inferior, which ends up referencing the step-resume | |
3015 | breakpoints through clear_thread_inferior_resources. */ | |
c906108c | 3016 | breakpoint_init_inferior (inf_exited); |
f59f708a | 3017 | |
c906108c SS |
3018 | registers_changed (); |
3019 | ||
c906108c SS |
3020 | reopen_exec_file (); |
3021 | reinit_frame_cache (); | |
3022 | ||
9a4105ab AC |
3023 | if (deprecated_detach_hook) |
3024 | deprecated_detach_hook (); | |
c906108c SS |
3025 | } |
3026 | \f | |
fd0a2a6f MK |
3027 | /* Convert a normal process ID to a string. Returns the string in a |
3028 | static buffer. */ | |
c906108c SS |
3029 | |
3030 | char * | |
39f77062 | 3031 | normal_pid_to_str (ptid_t ptid) |
c906108c | 3032 | { |
fd0a2a6f | 3033 | static char buf[32]; |
c906108c | 3034 | |
5fff8fc0 | 3035 | xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid)); |
c906108c SS |
3036 | return buf; |
3037 | } | |
3038 | ||
2c0b251b | 3039 | static char * |
770234d3 | 3040 | default_pid_to_str (struct target_ops *ops, ptid_t ptid) |
117de6a9 PA |
3041 | { |
3042 | return normal_pid_to_str (ptid); | |
3043 | } | |
3044 | ||
9b4eba8e HZ |
3045 | /* Error-catcher for target_find_memory_regions. */ |
3046 | static int | |
2e73927c TT |
3047 | dummy_find_memory_regions (struct target_ops *self, |
3048 | find_memory_region_ftype ignore1, void *ignore2) | |
be4d1333 | 3049 | { |
9b4eba8e | 3050 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3051 | return 0; |
3052 | } | |
3053 | ||
9b4eba8e HZ |
3054 | /* Error-catcher for target_make_corefile_notes. */ |
3055 | static char * | |
fc6691b2 TT |
3056 | dummy_make_corefile_notes (struct target_ops *self, |
3057 | bfd *ignore1, int *ignore2) | |
be4d1333 | 3058 | { |
9b4eba8e | 3059 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3060 | return NULL; |
3061 | } | |
3062 | ||
c906108c SS |
3063 | /* Set up the handful of non-empty slots needed by the dummy target |
3064 | vector. */ | |
3065 | ||
3066 | static void | |
fba45db2 | 3067 | init_dummy_target (void) |
c906108c SS |
3068 | { |
3069 | dummy_target.to_shortname = "None"; | |
3070 | dummy_target.to_longname = "None"; | |
3071 | dummy_target.to_doc = ""; | |
03583c20 UW |
3072 | dummy_target.to_supports_disable_randomization |
3073 | = find_default_supports_disable_randomization; | |
c906108c | 3074 | dummy_target.to_stratum = dummy_stratum; |
555bbdeb TT |
3075 | dummy_target.to_has_all_memory = return_zero; |
3076 | dummy_target.to_has_memory = return_zero; | |
3077 | dummy_target.to_has_stack = return_zero; | |
3078 | dummy_target.to_has_registers = return_zero; | |
3079 | dummy_target.to_has_execution = return_zero_has_execution; | |
c906108c | 3080 | dummy_target.to_magic = OPS_MAGIC; |
1101cb7b TT |
3081 | |
3082 | install_dummy_methods (&dummy_target); | |
c906108c | 3083 | } |
c906108c | 3084 | \f |
c906108c | 3085 | |
f1c07ab0 | 3086 | void |
460014f5 | 3087 | target_close (struct target_ops *targ) |
f1c07ab0 | 3088 | { |
7fdc1521 TT |
3089 | gdb_assert (!target_is_pushed (targ)); |
3090 | ||
f1c07ab0 | 3091 | if (targ->to_xclose != NULL) |
460014f5 | 3092 | targ->to_xclose (targ); |
f1c07ab0 | 3093 | else if (targ->to_close != NULL) |
de90e03d | 3094 | targ->to_close (targ); |
947b8855 PA |
3095 | |
3096 | if (targetdebug) | |
460014f5 | 3097 | fprintf_unfiltered (gdb_stdlog, "target_close ()\n"); |
f1c07ab0 AC |
3098 | } |
3099 | ||
28439f5e PA |
3100 | int |
3101 | target_thread_alive (ptid_t ptid) | |
c906108c | 3102 | { |
a7068b60 | 3103 | return current_target.to_thread_alive (¤t_target, ptid); |
28439f5e PA |
3104 | } |
3105 | ||
3106 | void | |
e8032dde | 3107 | target_update_thread_list (void) |
28439f5e | 3108 | { |
e8032dde | 3109 | current_target.to_update_thread_list (¤t_target); |
c906108c SS |
3110 | } |
3111 | ||
d914c394 SS |
3112 | void |
3113 | target_stop (ptid_t ptid) | |
3114 | { | |
3115 | if (!may_stop) | |
3116 | { | |
3117 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3118 | return; | |
3119 | } | |
3120 | ||
1eab8a48 | 3121 | (*current_target.to_stop) (¤t_target, ptid); |
d914c394 SS |
3122 | } |
3123 | ||
f8c1d06b GB |
3124 | /* See target/target.h. */ |
3125 | ||
3126 | void | |
03f4463b | 3127 | target_stop_and_wait (ptid_t ptid) |
f8c1d06b GB |
3128 | { |
3129 | struct target_waitstatus status; | |
3130 | int was_non_stop = non_stop; | |
3131 | ||
3132 | non_stop = 1; | |
3133 | target_stop (ptid); | |
3134 | ||
3135 | memset (&status, 0, sizeof (status)); | |
3136 | target_wait (ptid, &status, 0); | |
3137 | ||
3138 | non_stop = was_non_stop; | |
3139 | } | |
3140 | ||
3141 | /* See target/target.h. */ | |
3142 | ||
3143 | void | |
03f4463b | 3144 | target_continue_no_signal (ptid_t ptid) |
f8c1d06b GB |
3145 | { |
3146 | target_resume (ptid, 0, GDB_SIGNAL_0); | |
3147 | } | |
3148 | ||
09826ec5 PA |
3149 | /* Concatenate ELEM to LIST, a comma separate list, and return the |
3150 | result. The LIST incoming argument is released. */ | |
3151 | ||
3152 | static char * | |
3153 | str_comma_list_concat_elem (char *list, const char *elem) | |
3154 | { | |
3155 | if (list == NULL) | |
3156 | return xstrdup (elem); | |
3157 | else | |
3158 | return reconcat (list, list, ", ", elem, (char *) NULL); | |
3159 | } | |
3160 | ||
3161 | /* Helper for target_options_to_string. If OPT is present in | |
3162 | TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET. | |
3163 | Returns the new resulting string. OPT is removed from | |
3164 | TARGET_OPTIONS. */ | |
3165 | ||
3166 | static char * | |
3167 | do_option (int *target_options, char *ret, | |
3168 | int opt, char *opt_str) | |
3169 | { | |
3170 | if ((*target_options & opt) != 0) | |
3171 | { | |
3172 | ret = str_comma_list_concat_elem (ret, opt_str); | |
3173 | *target_options &= ~opt; | |
3174 | } | |
3175 | ||
3176 | return ret; | |
3177 | } | |
3178 | ||
3179 | char * | |
3180 | target_options_to_string (int target_options) | |
3181 | { | |
3182 | char *ret = NULL; | |
3183 | ||
3184 | #define DO_TARG_OPTION(OPT) \ | |
3185 | ret = do_option (&target_options, ret, OPT, #OPT) | |
3186 | ||
3187 | DO_TARG_OPTION (TARGET_WNOHANG); | |
3188 | ||
3189 | if (target_options != 0) | |
3190 | ret = str_comma_list_concat_elem (ret, "unknown???"); | |
3191 | ||
3192 | if (ret == NULL) | |
3193 | ret = xstrdup (""); | |
3194 | return ret; | |
3195 | } | |
3196 | ||
bf0c5130 | 3197 | static void |
56be3814 UW |
3198 | debug_print_register (const char * func, |
3199 | struct regcache *regcache, int regno) | |
bf0c5130 | 3200 | { |
f8d29908 | 3201 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
5d502164 | 3202 | |
bf0c5130 | 3203 | fprintf_unfiltered (gdb_stdlog, "%s ", func); |
f8d29908 | 3204 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) |
f8d29908 UW |
3205 | && gdbarch_register_name (gdbarch, regno) != NULL |
3206 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') | |
3207 | fprintf_unfiltered (gdb_stdlog, "(%s)", | |
3208 | gdbarch_register_name (gdbarch, regno)); | |
bf0c5130 AC |
3209 | else |
3210 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
0ff58721 | 3211 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) |
bf0c5130 | 3212 | { |
e17a4113 | 3213 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
f8d29908 | 3214 | int i, size = register_size (gdbarch, regno); |
e362b510 | 3215 | gdb_byte buf[MAX_REGISTER_SIZE]; |
5d502164 | 3216 | |
0ff58721 | 3217 | regcache_raw_collect (regcache, regno, buf); |
bf0c5130 | 3218 | fprintf_unfiltered (gdb_stdlog, " = "); |
81c4a259 | 3219 | for (i = 0; i < size; i++) |
bf0c5130 AC |
3220 | { |
3221 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
3222 | } | |
81c4a259 | 3223 | if (size <= sizeof (LONGEST)) |
bf0c5130 | 3224 | { |
e17a4113 | 3225 | ULONGEST val = extract_unsigned_integer (buf, size, byte_order); |
5d502164 | 3226 | |
0b1553bc UW |
3227 | fprintf_unfiltered (gdb_stdlog, " %s %s", |
3228 | core_addr_to_string_nz (val), plongest (val)); | |
bf0c5130 AC |
3229 | } |
3230 | } | |
3231 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
3232 | } | |
3233 | ||
28439f5e PA |
3234 | void |
3235 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 3236 | { |
ad5989bd TT |
3237 | current_target.to_fetch_registers (¤t_target, regcache, regno); |
3238 | if (targetdebug) | |
3239 | debug_print_register ("target_fetch_registers", regcache, regno); | |
c906108c SS |
3240 | } |
3241 | ||
28439f5e PA |
3242 | void |
3243 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 3244 | { |
28439f5e | 3245 | struct target_ops *t; |
5d502164 | 3246 | |
d914c394 SS |
3247 | if (!may_write_registers) |
3248 | error (_("Writing to registers is not allowed (regno %d)"), regno); | |
3249 | ||
6b84065d TT |
3250 | current_target.to_store_registers (¤t_target, regcache, regno); |
3251 | if (targetdebug) | |
28439f5e | 3252 | { |
6b84065d | 3253 | debug_print_register ("target_store_registers", regcache, regno); |
28439f5e | 3254 | } |
c906108c SS |
3255 | } |
3256 | ||
dc146f7c VP |
3257 | int |
3258 | target_core_of_thread (ptid_t ptid) | |
3259 | { | |
a7068b60 | 3260 | return current_target.to_core_of_thread (¤t_target, ptid); |
dc146f7c VP |
3261 | } |
3262 | ||
936d2992 PA |
3263 | int |
3264 | simple_verify_memory (struct target_ops *ops, | |
3265 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
3266 | { | |
3267 | LONGEST total_xfered = 0; | |
3268 | ||
3269 | while (total_xfered < size) | |
3270 | { | |
3271 | ULONGEST xfered_len; | |
3272 | enum target_xfer_status status; | |
3273 | gdb_byte buf[1024]; | |
3274 | ULONGEST howmuch = min (sizeof (buf), size - total_xfered); | |
3275 | ||
3276 | status = target_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
3277 | buf, NULL, lma + total_xfered, howmuch, | |
3278 | &xfered_len); | |
3279 | if (status == TARGET_XFER_OK | |
3280 | && memcmp (data + total_xfered, buf, xfered_len) == 0) | |
3281 | { | |
3282 | total_xfered += xfered_len; | |
3283 | QUIT; | |
3284 | } | |
3285 | else | |
3286 | return 0; | |
3287 | } | |
3288 | return 1; | |
3289 | } | |
3290 | ||
3291 | /* Default implementation of memory verification. */ | |
3292 | ||
3293 | static int | |
3294 | default_verify_memory (struct target_ops *self, | |
3295 | const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3296 | { | |
3297 | /* Start over from the top of the target stack. */ | |
3298 | return simple_verify_memory (current_target.beneath, | |
3299 | data, memaddr, size); | |
3300 | } | |
3301 | ||
4a5e7a5b PA |
3302 | int |
3303 | target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3304 | { | |
a7068b60 TT |
3305 | return current_target.to_verify_memory (¤t_target, |
3306 | data, memaddr, size); | |
4a5e7a5b PA |
3307 | } |
3308 | ||
9c06b0b4 TJB |
3309 | /* The documentation for this function is in its prototype declaration in |
3310 | target.h. */ | |
3311 | ||
3312 | int | |
3313 | target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
3314 | { | |
a7068b60 TT |
3315 | return current_target.to_insert_mask_watchpoint (¤t_target, |
3316 | addr, mask, rw); | |
9c06b0b4 TJB |
3317 | } |
3318 | ||
3319 | /* The documentation for this function is in its prototype declaration in | |
3320 | target.h. */ | |
3321 | ||
3322 | int | |
3323 | target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
3324 | { | |
a7068b60 TT |
3325 | return current_target.to_remove_mask_watchpoint (¤t_target, |
3326 | addr, mask, rw); | |
9c06b0b4 TJB |
3327 | } |
3328 | ||
3329 | /* The documentation for this function is in its prototype declaration | |
3330 | in target.h. */ | |
3331 | ||
3332 | int | |
3333 | target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask) | |
3334 | { | |
6c7e5e5c TT |
3335 | return current_target.to_masked_watch_num_registers (¤t_target, |
3336 | addr, mask); | |
9c06b0b4 TJB |
3337 | } |
3338 | ||
f1310107 TJB |
3339 | /* The documentation for this function is in its prototype declaration |
3340 | in target.h. */ | |
3341 | ||
3342 | int | |
3343 | target_ranged_break_num_registers (void) | |
3344 | { | |
a134316b | 3345 | return current_target.to_ranged_break_num_registers (¤t_target); |
f1310107 TJB |
3346 | } |
3347 | ||
02d27625 MM |
3348 | /* See target.h. */ |
3349 | ||
02d27625 MM |
3350 | struct btrace_target_info * |
3351 | target_enable_btrace (ptid_t ptid) | |
3352 | { | |
6dc7fcf4 | 3353 | return current_target.to_enable_btrace (¤t_target, ptid); |
02d27625 MM |
3354 | } |
3355 | ||
3356 | /* See target.h. */ | |
3357 | ||
3358 | void | |
3359 | target_disable_btrace (struct btrace_target_info *btinfo) | |
3360 | { | |
8dc292d3 | 3361 | current_target.to_disable_btrace (¤t_target, btinfo); |
02d27625 MM |
3362 | } |
3363 | ||
3364 | /* See target.h. */ | |
3365 | ||
3366 | void | |
3367 | target_teardown_btrace (struct btrace_target_info *btinfo) | |
3368 | { | |
9ace480d | 3369 | current_target.to_teardown_btrace (¤t_target, btinfo); |
02d27625 MM |
3370 | } |
3371 | ||
3372 | /* See target.h. */ | |
3373 | ||
969c39fb MM |
3374 | enum btrace_error |
3375 | target_read_btrace (VEC (btrace_block_s) **btrace, | |
3376 | struct btrace_target_info *btinfo, | |
02d27625 MM |
3377 | enum btrace_read_type type) |
3378 | { | |
eb5b20d4 | 3379 | return current_target.to_read_btrace (¤t_target, btrace, btinfo, type); |
02d27625 MM |
3380 | } |
3381 | ||
d02ed0bb MM |
3382 | /* See target.h. */ |
3383 | ||
7c1687a9 MM |
3384 | void |
3385 | target_stop_recording (void) | |
3386 | { | |
ee97f592 | 3387 | current_target.to_stop_recording (¤t_target); |
7c1687a9 MM |
3388 | } |
3389 | ||
3390 | /* See target.h. */ | |
3391 | ||
d02ed0bb | 3392 | void |
85e1311a | 3393 | target_save_record (const char *filename) |
d02ed0bb | 3394 | { |
f09e2107 | 3395 | current_target.to_save_record (¤t_target, filename); |
d02ed0bb MM |
3396 | } |
3397 | ||
3398 | /* See target.h. */ | |
3399 | ||
3400 | int | |
3401 | target_supports_delete_record (void) | |
3402 | { | |
3403 | struct target_ops *t; | |
3404 | ||
3405 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
b0ed115f TT |
3406 | if (t->to_delete_record != delegate_delete_record |
3407 | && t->to_delete_record != tdefault_delete_record) | |
d02ed0bb MM |
3408 | return 1; |
3409 | ||
3410 | return 0; | |
3411 | } | |
3412 | ||
3413 | /* See target.h. */ | |
3414 | ||
3415 | void | |
3416 | target_delete_record (void) | |
3417 | { | |
07366925 | 3418 | current_target.to_delete_record (¤t_target); |
d02ed0bb MM |
3419 | } |
3420 | ||
3421 | /* See target.h. */ | |
3422 | ||
3423 | int | |
3424 | target_record_is_replaying (void) | |
3425 | { | |
dd2e9d25 | 3426 | return current_target.to_record_is_replaying (¤t_target); |
d02ed0bb MM |
3427 | } |
3428 | ||
3429 | /* See target.h. */ | |
3430 | ||
3431 | void | |
3432 | target_goto_record_begin (void) | |
3433 | { | |
671e76cc | 3434 | current_target.to_goto_record_begin (¤t_target); |
d02ed0bb MM |
3435 | } |
3436 | ||
3437 | /* See target.h. */ | |
3438 | ||
3439 | void | |
3440 | target_goto_record_end (void) | |
3441 | { | |
e9179bb3 | 3442 | current_target.to_goto_record_end (¤t_target); |
d02ed0bb MM |
3443 | } |
3444 | ||
3445 | /* See target.h. */ | |
3446 | ||
3447 | void | |
3448 | target_goto_record (ULONGEST insn) | |
3449 | { | |
05969c84 | 3450 | current_target.to_goto_record (¤t_target, insn); |
d02ed0bb MM |
3451 | } |
3452 | ||
67c86d06 MM |
3453 | /* See target.h. */ |
3454 | ||
3455 | void | |
3456 | target_insn_history (int size, int flags) | |
3457 | { | |
3679abfa | 3458 | current_target.to_insn_history (¤t_target, size, flags); |
67c86d06 MM |
3459 | } |
3460 | ||
3461 | /* See target.h. */ | |
3462 | ||
3463 | void | |
3464 | target_insn_history_from (ULONGEST from, int size, int flags) | |
3465 | { | |
8444ab58 | 3466 | current_target.to_insn_history_from (¤t_target, from, size, flags); |
67c86d06 MM |
3467 | } |
3468 | ||
3469 | /* See target.h. */ | |
3470 | ||
3471 | void | |
3472 | target_insn_history_range (ULONGEST begin, ULONGEST end, int flags) | |
3473 | { | |
c29302cc | 3474 | current_target.to_insn_history_range (¤t_target, begin, end, flags); |
67c86d06 MM |
3475 | } |
3476 | ||
15984c13 MM |
3477 | /* See target.h. */ |
3478 | ||
3479 | void | |
3480 | target_call_history (int size, int flags) | |
3481 | { | |
170049d4 | 3482 | current_target.to_call_history (¤t_target, size, flags); |
15984c13 MM |
3483 | } |
3484 | ||
3485 | /* See target.h. */ | |
3486 | ||
3487 | void | |
3488 | target_call_history_from (ULONGEST begin, int size, int flags) | |
3489 | { | |
16fc27d6 | 3490 | current_target.to_call_history_from (¤t_target, begin, size, flags); |
15984c13 MM |
3491 | } |
3492 | ||
3493 | /* See target.h. */ | |
3494 | ||
3495 | void | |
3496 | target_call_history_range (ULONGEST begin, ULONGEST end, int flags) | |
3497 | { | |
115d9817 | 3498 | current_target.to_call_history_range (¤t_target, begin, end, flags); |
15984c13 MM |
3499 | } |
3500 | ||
ea001bdc MM |
3501 | /* See target.h. */ |
3502 | ||
3503 | const struct frame_unwind * | |
3504 | target_get_unwinder (void) | |
3505 | { | |
ac01945b | 3506 | return current_target.to_get_unwinder (¤t_target); |
ea001bdc MM |
3507 | } |
3508 | ||
3509 | /* See target.h. */ | |
3510 | ||
3511 | const struct frame_unwind * | |
3512 | target_get_tailcall_unwinder (void) | |
3513 | { | |
ac01945b | 3514 | return current_target.to_get_tailcall_unwinder (¤t_target); |
ea001bdc MM |
3515 | } |
3516 | ||
c0eca49f | 3517 | /* Default implementation of to_decr_pc_after_break. */ |
118e6252 | 3518 | |
c0eca49f TT |
3519 | static CORE_ADDR |
3520 | default_target_decr_pc_after_break (struct target_ops *ops, | |
118e6252 MM |
3521 | struct gdbarch *gdbarch) |
3522 | { | |
118e6252 MM |
3523 | return gdbarch_decr_pc_after_break (gdbarch); |
3524 | } | |
3525 | ||
3526 | /* See target.h. */ | |
3527 | ||
3528 | CORE_ADDR | |
3529 | target_decr_pc_after_break (struct gdbarch *gdbarch) | |
3530 | { | |
c0eca49f | 3531 | return current_target.to_decr_pc_after_break (¤t_target, gdbarch); |
118e6252 MM |
3532 | } |
3533 | ||
5fff78c4 MM |
3534 | /* See target.h. */ |
3535 | ||
3536 | void | |
3537 | target_prepare_to_generate_core (void) | |
3538 | { | |
3539 | current_target.to_prepare_to_generate_core (¤t_target); | |
3540 | } | |
3541 | ||
3542 | /* See target.h. */ | |
3543 | ||
3544 | void | |
3545 | target_done_generating_core (void) | |
3546 | { | |
3547 | current_target.to_done_generating_core (¤t_target); | |
3548 | } | |
3549 | ||
c906108c | 3550 | static void |
fba45db2 | 3551 | setup_target_debug (void) |
c906108c SS |
3552 | { |
3553 | memcpy (&debug_target, ¤t_target, sizeof debug_target); | |
3554 | ||
a7068b60 | 3555 | init_debug_target (¤t_target); |
c906108c | 3556 | } |
c906108c | 3557 | \f |
c5aa993b JM |
3558 | |
3559 | static char targ_desc[] = | |
3e43a32a MS |
3560 | "Names of targets and files being debugged.\nShows the entire \ |
3561 | stack of targets currently in use (including the exec-file,\n\ | |
c906108c SS |
3562 | core-file, and process, if any), as well as the symbol file name."; |
3563 | ||
a53f3625 | 3564 | static void |
a30bf1f1 TT |
3565 | default_rcmd (struct target_ops *self, const char *command, |
3566 | struct ui_file *output) | |
a53f3625 TT |
3567 | { |
3568 | error (_("\"monitor\" command not supported by this target.")); | |
3569 | } | |
3570 | ||
96baa820 JM |
3571 | static void |
3572 | do_monitor_command (char *cmd, | |
3573 | int from_tty) | |
3574 | { | |
96baa820 JM |
3575 | target_rcmd (cmd, gdb_stdtarg); |
3576 | } | |
3577 | ||
87680a14 JB |
3578 | /* Print the name of each layers of our target stack. */ |
3579 | ||
3580 | static void | |
3581 | maintenance_print_target_stack (char *cmd, int from_tty) | |
3582 | { | |
3583 | struct target_ops *t; | |
3584 | ||
3585 | printf_filtered (_("The current target stack is:\n")); | |
3586 | ||
3587 | for (t = target_stack; t != NULL; t = t->beneath) | |
3588 | { | |
3589 | printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname); | |
3590 | } | |
3591 | } | |
3592 | ||
329ea579 PA |
3593 | /* Controls if targets can report that they can/are async. This is |
3594 | just for maintainers to use when debugging gdb. */ | |
3595 | int target_async_permitted = 1; | |
c6ebd6cf VP |
3596 | |
3597 | /* The set command writes to this variable. If the inferior is | |
b5419e49 | 3598 | executing, target_async_permitted is *not* updated. */ |
329ea579 | 3599 | static int target_async_permitted_1 = 1; |
c6ebd6cf VP |
3600 | |
3601 | static void | |
329ea579 PA |
3602 | maint_set_target_async_command (char *args, int from_tty, |
3603 | struct cmd_list_element *c) | |
c6ebd6cf | 3604 | { |
c35b1492 | 3605 | if (have_live_inferiors ()) |
c6ebd6cf VP |
3606 | { |
3607 | target_async_permitted_1 = target_async_permitted; | |
3608 | error (_("Cannot change this setting while the inferior is running.")); | |
3609 | } | |
3610 | ||
3611 | target_async_permitted = target_async_permitted_1; | |
3612 | } | |
3613 | ||
3614 | static void | |
329ea579 PA |
3615 | maint_show_target_async_command (struct ui_file *file, int from_tty, |
3616 | struct cmd_list_element *c, | |
3617 | const char *value) | |
c6ebd6cf | 3618 | { |
3e43a32a MS |
3619 | fprintf_filtered (file, |
3620 | _("Controlling the inferior in " | |
3621 | "asynchronous mode is %s.\n"), value); | |
c6ebd6cf VP |
3622 | } |
3623 | ||
d914c394 SS |
3624 | /* Temporary copies of permission settings. */ |
3625 | ||
3626 | static int may_write_registers_1 = 1; | |
3627 | static int may_write_memory_1 = 1; | |
3628 | static int may_insert_breakpoints_1 = 1; | |
3629 | static int may_insert_tracepoints_1 = 1; | |
3630 | static int may_insert_fast_tracepoints_1 = 1; | |
3631 | static int may_stop_1 = 1; | |
3632 | ||
3633 | /* Make the user-set values match the real values again. */ | |
3634 | ||
3635 | void | |
3636 | update_target_permissions (void) | |
3637 | { | |
3638 | may_write_registers_1 = may_write_registers; | |
3639 | may_write_memory_1 = may_write_memory; | |
3640 | may_insert_breakpoints_1 = may_insert_breakpoints; | |
3641 | may_insert_tracepoints_1 = may_insert_tracepoints; | |
3642 | may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints; | |
3643 | may_stop_1 = may_stop; | |
3644 | } | |
3645 | ||
3646 | /* The one function handles (most of) the permission flags in the same | |
3647 | way. */ | |
3648 | ||
3649 | static void | |
3650 | set_target_permissions (char *args, int from_tty, | |
3651 | struct cmd_list_element *c) | |
3652 | { | |
3653 | if (target_has_execution) | |
3654 | { | |
3655 | update_target_permissions (); | |
3656 | error (_("Cannot change this setting while the inferior is running.")); | |
3657 | } | |
3658 | ||
3659 | /* Make the real values match the user-changed values. */ | |
3660 | may_write_registers = may_write_registers_1; | |
3661 | may_insert_breakpoints = may_insert_breakpoints_1; | |
3662 | may_insert_tracepoints = may_insert_tracepoints_1; | |
3663 | may_insert_fast_tracepoints = may_insert_fast_tracepoints_1; | |
3664 | may_stop = may_stop_1; | |
3665 | update_observer_mode (); | |
3666 | } | |
3667 | ||
3668 | /* Set memory write permission independently of observer mode. */ | |
3669 | ||
3670 | static void | |
3671 | set_write_memory_permission (char *args, int from_tty, | |
3672 | struct cmd_list_element *c) | |
3673 | { | |
3674 | /* Make the real values match the user-changed values. */ | |
3675 | may_write_memory = may_write_memory_1; | |
3676 | update_observer_mode (); | |
3677 | } | |
3678 | ||
3679 | ||
c906108c | 3680 | void |
fba45db2 | 3681 | initialize_targets (void) |
c906108c SS |
3682 | { |
3683 | init_dummy_target (); | |
3684 | push_target (&dummy_target); | |
3685 | ||
3686 | add_info ("target", target_info, targ_desc); | |
3687 | add_info ("files", target_info, targ_desc); | |
3688 | ||
ccce17b0 | 3689 | add_setshow_zuinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
85c07804 AC |
3690 | Set target debugging."), _("\ |
3691 | Show target debugging."), _("\ | |
333dabeb | 3692 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
3cecbbbe TT |
3693 | verbose."), |
3694 | set_targetdebug, | |
ccce17b0 YQ |
3695 | show_targetdebug, |
3696 | &setdebuglist, &showdebuglist); | |
3a11626d | 3697 | |
2bc416ba | 3698 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
3699 | &trust_readonly, _("\ |
3700 | Set mode for reading from readonly sections."), _("\ | |
3701 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
3702 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
3703 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 3704 | result in significant performance improvement for remote targets."), |
2c5b56ce | 3705 | NULL, |
920d2a44 | 3706 | show_trust_readonly, |
e707bbc2 | 3707 | &setlist, &showlist); |
96baa820 JM |
3708 | |
3709 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 3710 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 3711 | |
87680a14 JB |
3712 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
3713 | _("Print the name of each layer of the internal target stack."), | |
3714 | &maintenanceprintlist); | |
3715 | ||
c6ebd6cf VP |
3716 | add_setshow_boolean_cmd ("target-async", no_class, |
3717 | &target_async_permitted_1, _("\ | |
3718 | Set whether gdb controls the inferior in asynchronous mode."), _("\ | |
3719 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
3720 | Tells gdb whether to control the inferior in asynchronous mode."), | |
329ea579 PA |
3721 | maint_set_target_async_command, |
3722 | maint_show_target_async_command, | |
3723 | &maintenance_set_cmdlist, | |
3724 | &maintenance_show_cmdlist); | |
c6ebd6cf | 3725 | |
d914c394 SS |
3726 | add_setshow_boolean_cmd ("may-write-registers", class_support, |
3727 | &may_write_registers_1, _("\ | |
3728 | Set permission to write into registers."), _("\ | |
3729 | Show permission to write into registers."), _("\ | |
3730 | When this permission is on, GDB may write into the target's registers.\n\ | |
3731 | Otherwise, any sort of write attempt will result in an error."), | |
3732 | set_target_permissions, NULL, | |
3733 | &setlist, &showlist); | |
3734 | ||
3735 | add_setshow_boolean_cmd ("may-write-memory", class_support, | |
3736 | &may_write_memory_1, _("\ | |
3737 | Set permission to write into target memory."), _("\ | |
3738 | Show permission to write into target memory."), _("\ | |
3739 | When this permission is on, GDB may write into the target's memory.\n\ | |
3740 | Otherwise, any sort of write attempt will result in an error."), | |
3741 | set_write_memory_permission, NULL, | |
3742 | &setlist, &showlist); | |
3743 | ||
3744 | add_setshow_boolean_cmd ("may-insert-breakpoints", class_support, | |
3745 | &may_insert_breakpoints_1, _("\ | |
3746 | Set permission to insert breakpoints in the target."), _("\ | |
3747 | Show permission to insert breakpoints in the target."), _("\ | |
3748 | When this permission is on, GDB may insert breakpoints in the program.\n\ | |
3749 | Otherwise, any sort of insertion attempt will result in an error."), | |
3750 | set_target_permissions, NULL, | |
3751 | &setlist, &showlist); | |
3752 | ||
3753 | add_setshow_boolean_cmd ("may-insert-tracepoints", class_support, | |
3754 | &may_insert_tracepoints_1, _("\ | |
3755 | Set permission to insert tracepoints in the target."), _("\ | |
3756 | Show permission to insert tracepoints in the target."), _("\ | |
3757 | When this permission is on, GDB may insert tracepoints in the program.\n\ | |
3758 | Otherwise, any sort of insertion attempt will result in an error."), | |
3759 | set_target_permissions, NULL, | |
3760 | &setlist, &showlist); | |
3761 | ||
3762 | add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support, | |
3763 | &may_insert_fast_tracepoints_1, _("\ | |
3764 | Set permission to insert fast tracepoints in the target."), _("\ | |
3765 | Show permission to insert fast tracepoints in the target."), _("\ | |
3766 | When this permission is on, GDB may insert fast tracepoints.\n\ | |
3767 | Otherwise, any sort of insertion attempt will result in an error."), | |
3768 | set_target_permissions, NULL, | |
3769 | &setlist, &showlist); | |
3770 | ||
3771 | add_setshow_boolean_cmd ("may-interrupt", class_support, | |
3772 | &may_stop_1, _("\ | |
3773 | Set permission to interrupt or signal the target."), _("\ | |
3774 | Show permission to interrupt or signal the target."), _("\ | |
3775 | When this permission is on, GDB may interrupt/stop the target's execution.\n\ | |
3776 | Otherwise, any attempt to interrupt or stop will be ignored."), | |
3777 | set_target_permissions, NULL, | |
3778 | &setlist, &showlist); | |
6a3cb8e8 PA |
3779 | |
3780 | add_setshow_boolean_cmd ("auto-connect-native-target", class_support, | |
3781 | &auto_connect_native_target, _("\ | |
3782 | Set whether GDB may automatically connect to the native target."), _("\ | |
3783 | Show whether GDB may automatically connect to the native target."), _("\ | |
3784 | When on, and GDB is not connected to a target yet, GDB\n\ | |
3785 | attempts \"run\" and other commands with the native target."), | |
3786 | NULL, show_auto_connect_native_target, | |
3787 | &setlist, &showlist); | |
c906108c | 3788 | } |