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" | |
23 | #include <errno.h> | |
0e9f083f | 24 | #include <string.h> |
c906108c | 25 | #include "target.h" |
68c765e2 | 26 | #include "target-dcache.h" |
c906108c SS |
27 | #include "gdbcmd.h" |
28 | #include "symtab.h" | |
29 | #include "inferior.h" | |
30 | #include "bfd.h" | |
31 | #include "symfile.h" | |
32 | #include "objfiles.h" | |
4930751a | 33 | #include "dcache.h" |
c906108c | 34 | #include <signal.h> |
4e052eda | 35 | #include "regcache.h" |
0088c768 | 36 | #include "gdb_assert.h" |
b6591e8b | 37 | #include "gdbcore.h" |
9e35dae4 | 38 | #include "exceptions.h" |
424163ea | 39 | #include "target-descriptions.h" |
e1ac3328 | 40 | #include "gdbthread.h" |
b9db4ced | 41 | #include "solib.h" |
07b82ea5 | 42 | #include "exec.h" |
edb3359d | 43 | #include "inline-frame.h" |
2f4d8875 | 44 | #include "tracepoint.h" |
7313baad | 45 | #include "gdb/fileio.h" |
8ffcbaaf | 46 | #include "agent.h" |
c906108c | 47 | |
a14ed312 | 48 | static void target_info (char *, int); |
c906108c | 49 | |
0a4f40a2 | 50 | static void default_terminal_info (struct target_ops *, const char *, int); |
c906108c | 51 | |
5009afc5 AS |
52 | static int default_watchpoint_addr_within_range (struct target_ops *, |
53 | CORE_ADDR, CORE_ADDR, int); | |
54 | ||
31568a15 TT |
55 | static int default_region_ok_for_hw_watchpoint (struct target_ops *, |
56 | CORE_ADDR, int); | |
e0d24f8d | 57 | |
a53f3625 TT |
58 | static void default_rcmd (struct target_ops *, char *, struct ui_file *); |
59 | ||
4229b31d TT |
60 | static ptid_t default_get_ada_task_ptid (struct target_ops *self, |
61 | long lwp, long tid); | |
62 | ||
c25c4a8b | 63 | static void tcomplain (void) ATTRIBUTE_NORETURN; |
c906108c | 64 | |
a14ed312 | 65 | static int nomemory (CORE_ADDR, char *, int, int, struct target_ops *); |
c906108c | 66 | |
a14ed312 | 67 | static int return_zero (void); |
c906108c | 68 | |
ccaa32c7 GS |
69 | static int return_minus_one (void); |
70 | ||
1b67eb02 AS |
71 | static void *return_null (void); |
72 | ||
a14ed312 | 73 | void target_ignore (void); |
c906108c | 74 | |
a14ed312 | 75 | static void target_command (char *, int); |
c906108c | 76 | |
a14ed312 | 77 | static struct target_ops *find_default_run_target (char *); |
c906108c | 78 | |
4ac248ca YQ |
79 | static target_xfer_partial_ftype default_xfer_partial; |
80 | ||
c2250ad1 UW |
81 | static struct gdbarch *default_thread_architecture (struct target_ops *ops, |
82 | ptid_t ptid); | |
83 | ||
0b5a2719 TT |
84 | static int dummy_find_memory_regions (struct target_ops *self, |
85 | find_memory_region_ftype ignore1, | |
86 | void *ignore2); | |
87 | ||
16f796b1 TT |
88 | static char *dummy_make_corefile_notes (struct target_ops *self, |
89 | bfd *ignore1, int *ignore2); | |
90 | ||
6b84065d TT |
91 | static int find_default_can_async_p (struct target_ops *ignore); |
92 | ||
93 | static int find_default_is_async_p (struct target_ops *ignore); | |
94 | ||
fe31bf5b TT |
95 | static enum exec_direction_kind default_execution_direction |
96 | (struct target_ops *self); | |
97 | ||
1101cb7b TT |
98 | #include "target-delegates.c" |
99 | ||
a14ed312 | 100 | static void init_dummy_target (void); |
c906108c | 101 | |
aa869812 AC |
102 | static struct target_ops debug_target; |
103 | ||
a14ed312 | 104 | static void debug_to_open (char *, int); |
c906108c | 105 | |
f32dbf8c MM |
106 | static void debug_to_prepare_to_store (struct target_ops *self, |
107 | struct regcache *); | |
c906108c | 108 | |
a14ed312 | 109 | static void debug_to_files_info (struct target_ops *); |
c906108c | 110 | |
3db08215 | 111 | static int debug_to_insert_breakpoint (struct target_ops *, struct gdbarch *, |
a6d9a66e | 112 | struct bp_target_info *); |
c906108c | 113 | |
3db08215 | 114 | static int debug_to_remove_breakpoint (struct target_ops *, struct gdbarch *, |
a6d9a66e | 115 | struct bp_target_info *); |
c906108c | 116 | |
5461485a TT |
117 | static int debug_to_can_use_hw_breakpoint (struct target_ops *self, |
118 | int, int, int); | |
ccaa32c7 | 119 | |
23a26771 TT |
120 | static int debug_to_insert_hw_breakpoint (struct target_ops *self, |
121 | struct gdbarch *, | |
a6d9a66e | 122 | struct bp_target_info *); |
ccaa32c7 | 123 | |
a64dc96c TT |
124 | static int debug_to_remove_hw_breakpoint (struct target_ops *self, |
125 | struct gdbarch *, | |
a6d9a66e | 126 | struct bp_target_info *); |
ccaa32c7 | 127 | |
7bb99c53 TT |
128 | static int debug_to_insert_watchpoint (struct target_ops *self, |
129 | CORE_ADDR, int, int, | |
0cf6dd15 | 130 | struct expression *); |
ccaa32c7 | 131 | |
11b5219a TT |
132 | static int debug_to_remove_watchpoint (struct target_ops *self, |
133 | CORE_ADDR, int, int, | |
0cf6dd15 | 134 | struct expression *); |
ccaa32c7 | 135 | |
4aa7a7f5 | 136 | static int debug_to_stopped_data_address (struct target_ops *, CORE_ADDR *); |
ccaa32c7 | 137 | |
5009afc5 AS |
138 | static int debug_to_watchpoint_addr_within_range (struct target_ops *, |
139 | CORE_ADDR, CORE_ADDR, int); | |
140 | ||
31568a15 TT |
141 | static int debug_to_region_ok_for_hw_watchpoint (struct target_ops *self, |
142 | CORE_ADDR, int); | |
e0d24f8d | 143 | |
c3a5ff89 TT |
144 | static int debug_to_can_accel_watchpoint_condition (struct target_ops *self, |
145 | CORE_ADDR, int, int, | |
0cf6dd15 TJB |
146 | struct expression *); |
147 | ||
c42bf286 | 148 | static void debug_to_terminal_init (struct target_ops *self); |
c906108c | 149 | |
d2f640d4 | 150 | static void debug_to_terminal_inferior (struct target_ops *self); |
c906108c | 151 | |
2e1e1a19 | 152 | static void debug_to_terminal_ours_for_output (struct target_ops *self); |
c906108c | 153 | |
ae3bd431 | 154 | static void debug_to_terminal_save_ours (struct target_ops *self); |
a790ad35 | 155 | |
e3594fd1 | 156 | static void debug_to_terminal_ours (struct target_ops *self); |
c906108c | 157 | |
71a9f134 | 158 | static void debug_to_load (struct target_ops *self, char *, int); |
c906108c | 159 | |
da82bd6b | 160 | static int debug_to_can_run (struct target_ops *self); |
c906108c | 161 | |
1eab8a48 | 162 | static void debug_to_stop (struct target_ops *self, ptid_t); |
c906108c | 163 | |
c906108c | 164 | /* Pointer to array of target architecture structures; the size of the |
2bc416ba | 165 | array; the current index into the array; the allocated size of the |
c906108c SS |
166 | array. */ |
167 | struct target_ops **target_structs; | |
168 | unsigned target_struct_size; | |
c906108c SS |
169 | unsigned target_struct_allocsize; |
170 | #define DEFAULT_ALLOCSIZE 10 | |
171 | ||
172 | /* The initial current target, so that there is always a semi-valid | |
173 | current target. */ | |
174 | ||
175 | static struct target_ops dummy_target; | |
176 | ||
177 | /* Top of target stack. */ | |
178 | ||
258b763a | 179 | static struct target_ops *target_stack; |
c906108c SS |
180 | |
181 | /* The target structure we are currently using to talk to a process | |
182 | or file or whatever "inferior" we have. */ | |
183 | ||
184 | struct target_ops current_target; | |
185 | ||
186 | /* Command list for target. */ | |
187 | ||
188 | static struct cmd_list_element *targetlist = NULL; | |
189 | ||
cf7a04e8 DJ |
190 | /* Nonzero if we should trust readonly sections from the |
191 | executable when reading memory. */ | |
192 | ||
193 | static int trust_readonly = 0; | |
194 | ||
8defab1a DJ |
195 | /* Nonzero if we should show true memory content including |
196 | memory breakpoint inserted by gdb. */ | |
197 | ||
198 | static int show_memory_breakpoints = 0; | |
199 | ||
d914c394 SS |
200 | /* These globals control whether GDB attempts to perform these |
201 | operations; they are useful for targets that need to prevent | |
202 | inadvertant disruption, such as in non-stop mode. */ | |
203 | ||
204 | int may_write_registers = 1; | |
205 | ||
206 | int may_write_memory = 1; | |
207 | ||
208 | int may_insert_breakpoints = 1; | |
209 | ||
210 | int may_insert_tracepoints = 1; | |
211 | ||
212 | int may_insert_fast_tracepoints = 1; | |
213 | ||
214 | int may_stop = 1; | |
215 | ||
c906108c SS |
216 | /* Non-zero if we want to see trace of target level stuff. */ |
217 | ||
ccce17b0 | 218 | static unsigned int targetdebug = 0; |
920d2a44 AC |
219 | static void |
220 | show_targetdebug (struct ui_file *file, int from_tty, | |
221 | struct cmd_list_element *c, const char *value) | |
222 | { | |
223 | fprintf_filtered (file, _("Target debugging is %s.\n"), value); | |
224 | } | |
c906108c | 225 | |
a14ed312 | 226 | static void setup_target_debug (void); |
c906108c | 227 | |
c906108c SS |
228 | /* The user just typed 'target' without the name of a target. */ |
229 | ||
c906108c | 230 | static void |
fba45db2 | 231 | target_command (char *arg, int from_tty) |
c906108c SS |
232 | { |
233 | fputs_filtered ("Argument required (target name). Try `help target'\n", | |
234 | gdb_stdout); | |
235 | } | |
236 | ||
c35b1492 PA |
237 | /* Default target_has_* methods for process_stratum targets. */ |
238 | ||
239 | int | |
240 | default_child_has_all_memory (struct target_ops *ops) | |
241 | { | |
242 | /* If no inferior selected, then we can't read memory here. */ | |
243 | if (ptid_equal (inferior_ptid, null_ptid)) | |
244 | return 0; | |
245 | ||
246 | return 1; | |
247 | } | |
248 | ||
249 | int | |
250 | default_child_has_memory (struct target_ops *ops) | |
251 | { | |
252 | /* If no inferior selected, then we can't read memory here. */ | |
253 | if (ptid_equal (inferior_ptid, null_ptid)) | |
254 | return 0; | |
255 | ||
256 | return 1; | |
257 | } | |
258 | ||
259 | int | |
260 | default_child_has_stack (struct target_ops *ops) | |
261 | { | |
262 | /* If no inferior selected, there's no stack. */ | |
263 | if (ptid_equal (inferior_ptid, null_ptid)) | |
264 | return 0; | |
265 | ||
266 | return 1; | |
267 | } | |
268 | ||
269 | int | |
270 | default_child_has_registers (struct target_ops *ops) | |
271 | { | |
272 | /* Can't read registers from no inferior. */ | |
273 | if (ptid_equal (inferior_ptid, null_ptid)) | |
274 | return 0; | |
275 | ||
276 | return 1; | |
277 | } | |
278 | ||
279 | int | |
aeaec162 | 280 | default_child_has_execution (struct target_ops *ops, ptid_t the_ptid) |
c35b1492 PA |
281 | { |
282 | /* If there's no thread selected, then we can't make it run through | |
283 | hoops. */ | |
aeaec162 | 284 | if (ptid_equal (the_ptid, null_ptid)) |
c35b1492 PA |
285 | return 0; |
286 | ||
287 | return 1; | |
288 | } | |
289 | ||
290 | ||
291 | int | |
292 | target_has_all_memory_1 (void) | |
293 | { | |
294 | struct target_ops *t; | |
295 | ||
296 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
297 | if (t->to_has_all_memory (t)) | |
298 | return 1; | |
299 | ||
300 | return 0; | |
301 | } | |
302 | ||
303 | int | |
304 | target_has_memory_1 (void) | |
305 | { | |
306 | struct target_ops *t; | |
307 | ||
308 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
309 | if (t->to_has_memory (t)) | |
310 | return 1; | |
311 | ||
312 | return 0; | |
313 | } | |
314 | ||
315 | int | |
316 | target_has_stack_1 (void) | |
317 | { | |
318 | struct target_ops *t; | |
319 | ||
320 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
321 | if (t->to_has_stack (t)) | |
322 | return 1; | |
323 | ||
324 | return 0; | |
325 | } | |
326 | ||
327 | int | |
328 | target_has_registers_1 (void) | |
329 | { | |
330 | struct target_ops *t; | |
331 | ||
332 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
333 | if (t->to_has_registers (t)) | |
334 | return 1; | |
335 | ||
336 | return 0; | |
337 | } | |
338 | ||
339 | int | |
aeaec162 | 340 | target_has_execution_1 (ptid_t the_ptid) |
c35b1492 PA |
341 | { |
342 | struct target_ops *t; | |
343 | ||
344 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
aeaec162 | 345 | if (t->to_has_execution (t, the_ptid)) |
c35b1492 PA |
346 | return 1; |
347 | ||
348 | return 0; | |
349 | } | |
350 | ||
aeaec162 TT |
351 | int |
352 | target_has_execution_current (void) | |
353 | { | |
354 | return target_has_execution_1 (inferior_ptid); | |
355 | } | |
356 | ||
c22a2b88 TT |
357 | /* Complete initialization of T. This ensures that various fields in |
358 | T are set, if needed by the target implementation. */ | |
c906108c SS |
359 | |
360 | void | |
c22a2b88 | 361 | complete_target_initialization (struct target_ops *t) |
c906108c | 362 | { |
0088c768 | 363 | /* Provide default values for all "must have" methods. */ |
0b603eba AC |
364 | if (t->to_xfer_partial == NULL) |
365 | t->to_xfer_partial = default_xfer_partial; | |
0088c768 | 366 | |
c35b1492 PA |
367 | if (t->to_has_all_memory == NULL) |
368 | t->to_has_all_memory = (int (*) (struct target_ops *)) return_zero; | |
369 | ||
370 | if (t->to_has_memory == NULL) | |
371 | t->to_has_memory = (int (*) (struct target_ops *)) return_zero; | |
372 | ||
373 | if (t->to_has_stack == NULL) | |
374 | t->to_has_stack = (int (*) (struct target_ops *)) return_zero; | |
375 | ||
376 | if (t->to_has_registers == NULL) | |
377 | t->to_has_registers = (int (*) (struct target_ops *)) return_zero; | |
378 | ||
379 | if (t->to_has_execution == NULL) | |
aeaec162 | 380 | t->to_has_execution = (int (*) (struct target_ops *, ptid_t)) return_zero; |
1101cb7b TT |
381 | |
382 | install_delegators (t); | |
c22a2b88 TT |
383 | } |
384 | ||
385 | /* Add possible target architecture T to the list and add a new | |
386 | command 'target T->to_shortname'. Set COMPLETER as the command's | |
387 | completer if not NULL. */ | |
388 | ||
389 | void | |
390 | add_target_with_completer (struct target_ops *t, | |
391 | completer_ftype *completer) | |
392 | { | |
393 | struct cmd_list_element *c; | |
394 | ||
395 | complete_target_initialization (t); | |
c35b1492 | 396 | |
c906108c SS |
397 | if (!target_structs) |
398 | { | |
399 | target_struct_allocsize = DEFAULT_ALLOCSIZE; | |
400 | target_structs = (struct target_ops **) xmalloc | |
401 | (target_struct_allocsize * sizeof (*target_structs)); | |
402 | } | |
403 | if (target_struct_size >= target_struct_allocsize) | |
404 | { | |
405 | target_struct_allocsize *= 2; | |
406 | target_structs = (struct target_ops **) | |
c5aa993b JM |
407 | xrealloc ((char *) target_structs, |
408 | target_struct_allocsize * sizeof (*target_structs)); | |
c906108c SS |
409 | } |
410 | target_structs[target_struct_size++] = t; | |
c906108c SS |
411 | |
412 | if (targetlist == NULL) | |
1bedd215 AC |
413 | add_prefix_cmd ("target", class_run, target_command, _("\ |
414 | Connect to a target machine or process.\n\ | |
c906108c SS |
415 | The first argument is the type or protocol of the target machine.\n\ |
416 | Remaining arguments are interpreted by the target protocol. For more\n\ | |
417 | information on the arguments for a particular protocol, type\n\ | |
1bedd215 | 418 | `help target ' followed by the protocol name."), |
c906108c | 419 | &targetlist, "target ", 0, &cmdlist); |
9852c492 YQ |
420 | c = add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc, |
421 | &targetlist); | |
422 | if (completer != NULL) | |
423 | set_cmd_completer (c, completer); | |
424 | } | |
425 | ||
426 | /* Add a possible target architecture to the list. */ | |
427 | ||
428 | void | |
429 | add_target (struct target_ops *t) | |
430 | { | |
431 | add_target_with_completer (t, NULL); | |
c906108c SS |
432 | } |
433 | ||
b48d48eb MM |
434 | /* See target.h. */ |
435 | ||
436 | void | |
437 | add_deprecated_target_alias (struct target_ops *t, char *alias) | |
438 | { | |
439 | struct cmd_list_element *c; | |
440 | char *alt; | |
441 | ||
442 | /* If we use add_alias_cmd, here, we do not get the deprecated warning, | |
443 | see PR cli/15104. */ | |
444 | c = add_cmd (alias, no_class, t->to_open, t->to_doc, &targetlist); | |
445 | alt = xstrprintf ("target %s", t->to_shortname); | |
446 | deprecate_cmd (c, alt); | |
447 | } | |
448 | ||
c906108c SS |
449 | /* Stub functions */ |
450 | ||
451 | void | |
fba45db2 | 452 | target_ignore (void) |
c906108c SS |
453 | { |
454 | } | |
455 | ||
7d85a9c0 JB |
456 | void |
457 | target_kill (void) | |
458 | { | |
459 | struct target_ops *t; | |
460 | ||
461 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
462 | if (t->to_kill != NULL) | |
463 | { | |
464 | if (targetdebug) | |
465 | fprintf_unfiltered (gdb_stdlog, "target_kill ()\n"); | |
466 | ||
467 | t->to_kill (t); | |
468 | return; | |
469 | } | |
470 | ||
471 | noprocess (); | |
472 | } | |
473 | ||
11cf8741 JM |
474 | void |
475 | target_load (char *arg, int from_tty) | |
476 | { | |
4e5d721f | 477 | target_dcache_invalidate (); |
71a9f134 | 478 | (*current_target.to_load) (¤t_target, arg, from_tty); |
11cf8741 JM |
479 | } |
480 | ||
947b8855 PA |
481 | void |
482 | target_create_inferior (char *exec_file, char *args, | |
483 | char **env, int from_tty) | |
136d6dae VP |
484 | { |
485 | struct target_ops *t; | |
5d502164 | 486 | |
136d6dae VP |
487 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
488 | { | |
489 | if (t->to_create_inferior != NULL) | |
490 | { | |
491 | t->to_create_inferior (t, exec_file, args, env, from_tty); | |
947b8855 PA |
492 | if (targetdebug) |
493 | fprintf_unfiltered (gdb_stdlog, | |
494 | "target_create_inferior (%s, %s, xxx, %d)\n", | |
495 | exec_file, args, from_tty); | |
136d6dae VP |
496 | return; |
497 | } | |
498 | } | |
499 | ||
500 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 501 | _("could not find a target to create inferior")); |
136d6dae VP |
502 | } |
503 | ||
d9d2d8b6 PA |
504 | void |
505 | target_terminal_inferior (void) | |
506 | { | |
507 | /* A background resume (``run&'') should leave GDB in control of the | |
c378eb4e | 508 | terminal. Use target_can_async_p, not target_is_async_p, since at |
ba7f6c64 VP |
509 | this point the target is not async yet. However, if sync_execution |
510 | is not set, we know it will become async prior to resume. */ | |
511 | if (target_can_async_p () && !sync_execution) | |
d9d2d8b6 PA |
512 | return; |
513 | ||
514 | /* If GDB is resuming the inferior in the foreground, install | |
515 | inferior's terminal modes. */ | |
d2f640d4 | 516 | (*current_target.to_terminal_inferior) (¤t_target); |
d9d2d8b6 | 517 | } |
136d6dae | 518 | |
c906108c | 519 | static int |
fba45db2 KB |
520 | nomemory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
521 | struct target_ops *t) | |
c906108c | 522 | { |
c378eb4e MS |
523 | errno = EIO; /* Can't read/write this location. */ |
524 | return 0; /* No bytes handled. */ | |
c906108c SS |
525 | } |
526 | ||
527 | static void | |
fba45db2 | 528 | tcomplain (void) |
c906108c | 529 | { |
8a3fe4f8 | 530 | error (_("You can't do that when your target is `%s'"), |
c906108c SS |
531 | current_target.to_shortname); |
532 | } | |
533 | ||
534 | void | |
fba45db2 | 535 | noprocess (void) |
c906108c | 536 | { |
8a3fe4f8 | 537 | error (_("You can't do that without a process to debug.")); |
c906108c SS |
538 | } |
539 | ||
c906108c | 540 | static void |
0a4f40a2 | 541 | default_terminal_info (struct target_ops *self, const char *args, int from_tty) |
c906108c | 542 | { |
a3f17187 | 543 | printf_unfiltered (_("No saved terminal information.\n")); |
c906108c SS |
544 | } |
545 | ||
0ef643c8 JB |
546 | /* A default implementation for the to_get_ada_task_ptid target method. |
547 | ||
548 | This function builds the PTID by using both LWP and TID as part of | |
549 | the PTID lwp and tid elements. The pid used is the pid of the | |
550 | inferior_ptid. */ | |
551 | ||
2c0b251b | 552 | static ptid_t |
1e6b91a4 | 553 | default_get_ada_task_ptid (struct target_ops *self, long lwp, long tid) |
0ef643c8 JB |
554 | { |
555 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid); | |
556 | } | |
557 | ||
32231432 | 558 | static enum exec_direction_kind |
4c612759 | 559 | default_execution_direction (struct target_ops *self) |
32231432 PA |
560 | { |
561 | if (!target_can_execute_reverse) | |
562 | return EXEC_FORWARD; | |
563 | else if (!target_can_async_p ()) | |
564 | return EXEC_FORWARD; | |
565 | else | |
566 | gdb_assert_not_reached ("\ | |
567 | to_execution_direction must be implemented for reverse async"); | |
568 | } | |
569 | ||
7998dfc3 AC |
570 | /* Go through the target stack from top to bottom, copying over zero |
571 | entries in current_target, then filling in still empty entries. In | |
572 | effect, we are doing class inheritance through the pushed target | |
573 | vectors. | |
574 | ||
575 | NOTE: cagney/2003-10-17: The problem with this inheritance, as it | |
576 | is currently implemented, is that it discards any knowledge of | |
577 | which target an inherited method originally belonged to. | |
578 | Consequently, new new target methods should instead explicitly and | |
579 | locally search the target stack for the target that can handle the | |
580 | request. */ | |
c906108c SS |
581 | |
582 | static void | |
7998dfc3 | 583 | update_current_target (void) |
c906108c | 584 | { |
7998dfc3 AC |
585 | struct target_ops *t; |
586 | ||
08d8bcd7 | 587 | /* First, reset current's contents. */ |
7998dfc3 AC |
588 | memset (¤t_target, 0, sizeof (current_target)); |
589 | ||
1101cb7b TT |
590 | /* Install the delegators. */ |
591 | install_delegators (¤t_target); | |
592 | ||
7998dfc3 AC |
593 | #define INHERIT(FIELD, TARGET) \ |
594 | if (!current_target.FIELD) \ | |
595 | current_target.FIELD = (TARGET)->FIELD | |
596 | ||
597 | for (t = target_stack; t; t = t->beneath) | |
598 | { | |
599 | INHERIT (to_shortname, t); | |
600 | INHERIT (to_longname, t); | |
601 | INHERIT (to_doc, t); | |
b52323fa UW |
602 | /* Do not inherit to_open. */ |
603 | /* Do not inherit to_close. */ | |
136d6dae | 604 | /* Do not inherit to_attach. */ |
bebd3233 | 605 | /* Do not inherit to_post_attach. */ |
dc177b7a | 606 | INHERIT (to_attach_no_wait, t); |
136d6dae | 607 | /* Do not inherit to_detach. */ |
597320e7 | 608 | /* Do not inherit to_disconnect. */ |
28439f5e | 609 | /* Do not inherit to_resume. */ |
117de6a9 | 610 | /* Do not inherit to_wait. */ |
28439f5e PA |
611 | /* Do not inherit to_fetch_registers. */ |
612 | /* Do not inherit to_store_registers. */ | |
6c628163 | 613 | /* Do not inherit to_prepare_to_store. */ |
c8e73a31 | 614 | INHERIT (deprecated_xfer_memory, t); |
f86e59b2 | 615 | /* Do not inherit to_files_info. */ |
3db08215 MM |
616 | /* Do not inherit to_insert_breakpoint. */ |
617 | /* Do not inherit to_remove_breakpoint. */ | |
52b51d06 | 618 | /* Do not inherit to_can_use_hw_breakpoint. */ |
61b371f9 | 619 | /* Do not inherit to_insert_hw_breakpoint. */ |
418dabac | 620 | /* Do not inherit to_remove_hw_breakpoint. */ |
f1310107 | 621 | /* Do not inherit to_ranged_break_num_registers. */ |
016facd4 | 622 | /* Do not inherit to_insert_watchpoint. */ |
61dd109f | 623 | /* Do not inherit to_remove_watchpoint. */ |
9c06b0b4 TJB |
624 | /* Do not inherit to_insert_mask_watchpoint. */ |
625 | /* Do not inherit to_remove_mask_watchpoint. */ | |
6b84065d | 626 | /* Do not inherit to_stopped_data_address. */ |
74174d2e | 627 | INHERIT (to_have_steppable_watchpoint, t); |
7998dfc3 | 628 | INHERIT (to_have_continuable_watchpoint, t); |
6b84065d | 629 | /* Do not inherit to_stopped_by_watchpoint. */ |
65f160a9 | 630 | /* Do not inherit to_watchpoint_addr_within_range. */ |
d03655e4 | 631 | /* Do not inherit to_region_ok_for_hw_watchpoint. */ |
77cdffe9 | 632 | /* Do not inherit to_can_accel_watchpoint_condition. */ |
9c06b0b4 | 633 | /* Do not inherit to_masked_watch_num_registers. */ |
0343661d | 634 | /* Do not inherit to_terminal_init. */ |
ddeaacc9 | 635 | /* Do not inherit to_terminal_inferior. */ |
74fcbef9 | 636 | /* Do not inherit to_terminal_ours_for_output. */ |
e4a733f1 | 637 | /* Do not inherit to_terminal_ours. */ |
c6ea8f79 | 638 | /* Do not inherit to_terminal_save_ours. */ |
e19e919f | 639 | /* Do not inherit to_terminal_info. */ |
7d85a9c0 | 640 | /* Do not inherit to_kill. */ |
7634da87 | 641 | /* Do not inherit to_load. */ |
136d6dae | 642 | /* Do no inherit to_create_inferior. */ |
340ba4bf | 643 | /* Do not inherit to_post_startup_inferior. */ |
5958ebeb | 644 | /* Do not inherit to_insert_fork_catchpoint. */ |
e1a21fb7 | 645 | /* Do not inherit to_remove_fork_catchpoint. */ |
7e18a8dc | 646 | /* Do not inherit to_insert_vfork_catchpoint. */ |
95c3375e | 647 | /* Do not inherit to_remove_vfork_catchpoint. */ |
ee057212 | 648 | /* Do not inherit to_follow_fork. */ |
62f64d7a | 649 | /* Do not inherit to_insert_exec_catchpoint. */ |
cda0f38c | 650 | /* Do not inherit to_remove_exec_catchpoint. */ |
6a9fa051 | 651 | /* Do not inherit to_set_syscall_catchpoint. */ |
0db88c1d | 652 | /* Do not inherit to_has_exited. */ |
82892036 | 653 | /* Do not inherit to_mourn_inferior. */ |
7998dfc3 | 654 | INHERIT (to_can_run, t); |
2455069d | 655 | /* Do not inherit to_pass_signals. */ |
9b224c5e | 656 | /* Do not inherit to_program_signals. */ |
28439f5e PA |
657 | /* Do not inherit to_thread_alive. */ |
658 | /* Do not inherit to_find_new_threads. */ | |
117de6a9 | 659 | /* Do not inherit to_pid_to_str. */ |
4a7e6dda | 660 | /* Do not inherit to_extra_thread_info. */ |
825828fc | 661 | /* Do not inherit to_thread_name. */ |
7998dfc3 | 662 | INHERIT (to_stop, t); |
4b8a223f | 663 | /* Do not inherit to_xfer_partial. */ |
a53f3625 | 664 | /* Do not inherit to_rcmd. */ |
830ca330 | 665 | /* Do not inherit to_pid_to_exec_file. */ |
d9cb0195 | 666 | /* Do not inherit to_log_command. */ |
7998dfc3 | 667 | INHERIT (to_stratum, t); |
c378eb4e MS |
668 | /* Do not inherit to_has_all_memory. */ |
669 | /* Do not inherit to_has_memory. */ | |
670 | /* Do not inherit to_has_stack. */ | |
671 | /* Do not inherit to_has_registers. */ | |
672 | /* Do not inherit to_has_execution. */ | |
7998dfc3 | 673 | INHERIT (to_has_thread_control, t); |
6b84065d TT |
674 | /* Do not inherit to_can_async_p. */ |
675 | /* Do not inherit to_is_async_p. */ | |
676 | /* Do not inherit to_async. */ | |
0b5a2719 | 677 | /* Do not inherit to_find_memory_regions. */ |
16f796b1 | 678 | /* Do not inherit to_make_corefile_notes. */ |
3dbafbbb | 679 | /* Do not inherit to_get_bookmark. */ |
9bb9d61d | 680 | /* Do not inherit to_goto_bookmark. */ |
117de6a9 | 681 | /* Do not inherit to_get_thread_local_address. */ |
53e1cfc7 | 682 | /* Do not inherit to_can_execute_reverse. */ |
fe31bf5b | 683 | /* Do not inherit to_execution_direction. */ |
43eba180 | 684 | /* Do not inherit to_thread_architecture. */ |
424163ea | 685 | /* Do not inherit to_read_description. */ |
4229b31d | 686 | /* Do not inherit to_get_ada_task_ptid. */ |
08388c79 | 687 | /* Do not inherit to_search_memory. */ |
a7304748 | 688 | /* Do not inherit to_supports_multi_process. */ |
aab1b22d | 689 | /* Do not inherit to_supports_enable_disable_tracepoint. */ |
9409d39e | 690 | /* Do not inherit to_supports_string_tracing. */ |
5536135b | 691 | /* Do not inherit to_trace_init. */ |
9a980a22 | 692 | /* Do not inherit to_download_tracepoint. */ |
719acc4a | 693 | /* Do not inherit to_can_download_tracepoint. */ |
94eb98b9 | 694 | /* Do not inherit to_download_trace_state_variable. */ |
151f70f1 | 695 | /* Do not inherit to_enable_tracepoint. */ |
05c41993 | 696 | /* Do not inherit to_disable_tracepoint. */ |
86dd181d | 697 | /* Do not inherit to_trace_set_readonly_regions. */ |
25da2e80 | 698 | /* Do not inherit to_trace_start. */ |
4072d4ff | 699 | /* Do not inherit to_get_trace_status. */ |
f196051f | 700 | INHERIT (to_get_tracepoint_status, t); |
35b1e5cc SS |
701 | INHERIT (to_trace_stop, t); |
702 | INHERIT (to_trace_find, t); | |
703 | INHERIT (to_get_trace_state_variable_value, t); | |
00bf0b85 SS |
704 | INHERIT (to_save_trace_data, t); |
705 | INHERIT (to_upload_tracepoints, t); | |
706 | INHERIT (to_upload_trace_state_variables, t); | |
707 | INHERIT (to_get_raw_trace_data, t); | |
405f8e94 | 708 | INHERIT (to_get_min_fast_tracepoint_insn_len, t); |
35b1e5cc | 709 | INHERIT (to_set_disconnected_tracing, t); |
4daf5ac0 | 710 | INHERIT (to_set_circular_trace_buffer, t); |
f6f899bf | 711 | INHERIT (to_set_trace_buffer_size, t); |
f196051f | 712 | INHERIT (to_set_trace_notes, t); |
711e434b | 713 | INHERIT (to_get_tib_address, t); |
d914c394 | 714 | INHERIT (to_set_permissions, t); |
0fb4aa4b PA |
715 | INHERIT (to_static_tracepoint_marker_at, t); |
716 | INHERIT (to_static_tracepoint_markers_by_strid, t); | |
b3b9301e | 717 | INHERIT (to_traceframe_info, t); |
d1feda86 YQ |
718 | INHERIT (to_use_agent, t); |
719 | INHERIT (to_can_use_agent, t); | |
ced63ec0 | 720 | INHERIT (to_augmented_libraries_svr4_read, t); |
7998dfc3 | 721 | INHERIT (to_magic, t); |
b775012e | 722 | INHERIT (to_supports_evaluation_of_breakpoint_conditions, t); |
d3ce09f5 | 723 | INHERIT (to_can_run_breakpoint_commands, t); |
fd79ecee | 724 | /* Do not inherit to_memory_map. */ |
a76d924d DJ |
725 | /* Do not inherit to_flash_erase. */ |
726 | /* Do not inherit to_flash_done. */ | |
7998dfc3 AC |
727 | } |
728 | #undef INHERIT | |
729 | ||
730 | /* Clean up a target struct so it no longer has any zero pointers in | |
0088c768 AC |
731 | it. Some entries are defaulted to a method that print an error, |
732 | others are hard-wired to a standard recursive default. */ | |
c906108c SS |
733 | |
734 | #define de_fault(field, value) \ | |
7998dfc3 AC |
735 | if (!current_target.field) \ |
736 | current_target.field = value | |
0d06e24b | 737 | |
2bc416ba DJ |
738 | de_fault (to_open, |
739 | (void (*) (char *, int)) | |
0d06e24b | 740 | tcomplain); |
2bc416ba | 741 | de_fault (to_close, |
de90e03d | 742 | (void (*) (struct target_ops *)) |
0d06e24b | 743 | target_ignore); |
2bc416ba | 744 | de_fault (deprecated_xfer_memory, |
3e43a32a MS |
745 | (int (*) (CORE_ADDR, gdb_byte *, int, int, |
746 | struct mem_attrib *, struct target_ops *)) | |
0d06e24b | 747 | nomemory); |
2bc416ba | 748 | de_fault (to_can_run, |
da82bd6b | 749 | (int (*) (struct target_ops *)) |
0d06e24b | 750 | return_zero); |
2bc416ba | 751 | de_fault (to_stop, |
1eab8a48 | 752 | (void (*) (struct target_ops *, ptid_t)) |
0d06e24b | 753 | target_ignore); |
424163ea | 754 | current_target.to_read_description = NULL; |
f196051f | 755 | de_fault (to_get_tracepoint_status, |
db90e85c TT |
756 | (void (*) (struct target_ops *, struct breakpoint *, |
757 | struct uploaded_tp *)) | |
f196051f | 758 | tcomplain); |
35b1e5cc | 759 | de_fault (to_trace_stop, |
74499f1b | 760 | (void (*) (struct target_ops *)) |
35b1e5cc SS |
761 | tcomplain); |
762 | de_fault (to_trace_find, | |
bd4c6793 TT |
763 | (int (*) (struct target_ops *, |
764 | enum trace_find_type, int, CORE_ADDR, CORE_ADDR, int *)) | |
4136fdd2 | 765 | return_minus_one); |
35b1e5cc | 766 | de_fault (to_get_trace_state_variable_value, |
4011015b | 767 | (int (*) (struct target_ops *, int, LONGEST *)) |
35b1e5cc | 768 | return_zero); |
00bf0b85 | 769 | de_fault (to_save_trace_data, |
dc3decaf | 770 | (int (*) (struct target_ops *, const char *)) |
00bf0b85 SS |
771 | tcomplain); |
772 | de_fault (to_upload_tracepoints, | |
ab6617cc | 773 | (int (*) (struct target_ops *, struct uploaded_tp **)) |
00bf0b85 SS |
774 | return_zero); |
775 | de_fault (to_upload_trace_state_variables, | |
181e3713 | 776 | (int (*) (struct target_ops *, struct uploaded_tsv **)) |
00bf0b85 SS |
777 | return_zero); |
778 | de_fault (to_get_raw_trace_data, | |
88ee6f45 | 779 | (LONGEST (*) (struct target_ops *, gdb_byte *, ULONGEST, LONGEST)) |
00bf0b85 | 780 | tcomplain); |
405f8e94 | 781 | de_fault (to_get_min_fast_tracepoint_insn_len, |
0e67620a | 782 | (int (*) (struct target_ops *)) |
405f8e94 | 783 | return_minus_one); |
35b1e5cc | 784 | de_fault (to_set_disconnected_tracing, |
37b25738 | 785 | (void (*) (struct target_ops *, int)) |
4daf5ac0 SS |
786 | target_ignore); |
787 | de_fault (to_set_circular_trace_buffer, | |
736d5b1f | 788 | (void (*) (struct target_ops *, int)) |
4daf5ac0 | 789 | target_ignore); |
f6f899bf | 790 | de_fault (to_set_trace_buffer_size, |
4da384be | 791 | (void (*) (struct target_ops *, LONGEST)) |
f6f899bf | 792 | target_ignore); |
f196051f | 793 | de_fault (to_set_trace_notes, |
d9e68a2c TT |
794 | (int (*) (struct target_ops *, |
795 | const char *, const char *, const char *)) | |
f196051f | 796 | return_zero); |
711e434b | 797 | de_fault (to_get_tib_address, |
bd7ae0f5 | 798 | (int (*) (struct target_ops *, ptid_t, CORE_ADDR *)) |
711e434b | 799 | tcomplain); |
d914c394 | 800 | de_fault (to_set_permissions, |
c378d69d | 801 | (void (*) (struct target_ops *)) |
d914c394 | 802 | target_ignore); |
0fb4aa4b | 803 | de_fault (to_static_tracepoint_marker_at, |
61fc905d TT |
804 | (int (*) (struct target_ops *, |
805 | CORE_ADDR, struct static_tracepoint_marker *)) | |
0fb4aa4b PA |
806 | return_zero); |
807 | de_fault (to_static_tracepoint_markers_by_strid, | |
c686c57f TT |
808 | (VEC(static_tracepoint_marker_p) * (*) (struct target_ops *, |
809 | const char *)) | |
0fb4aa4b | 810 | tcomplain); |
b3b9301e | 811 | de_fault (to_traceframe_info, |
a893e81f | 812 | (struct traceframe_info * (*) (struct target_ops *)) |
1b67eb02 | 813 | return_null); |
b775012e | 814 | de_fault (to_supports_evaluation_of_breakpoint_conditions, |
efcc2da7 | 815 | (int (*) (struct target_ops *)) |
b775012e | 816 | return_zero); |
d3ce09f5 | 817 | de_fault (to_can_run_breakpoint_commands, |
78eff0ec | 818 | (int (*) (struct target_ops *)) |
d3ce09f5 | 819 | return_zero); |
d1feda86 | 820 | de_fault (to_use_agent, |
2c152180 | 821 | (int (*) (struct target_ops *, int)) |
d1feda86 YQ |
822 | tcomplain); |
823 | de_fault (to_can_use_agent, | |
fe38f897 | 824 | (int (*) (struct target_ops *)) |
d1feda86 | 825 | return_zero); |
ced63ec0 | 826 | de_fault (to_augmented_libraries_svr4_read, |
5436ff03 | 827 | (int (*) (struct target_ops *)) |
ced63ec0 | 828 | return_zero); |
32231432 | 829 | |
c906108c | 830 | #undef de_fault |
c906108c | 831 | |
7998dfc3 AC |
832 | /* Finally, position the target-stack beneath the squashed |
833 | "current_target". That way code looking for a non-inherited | |
834 | target method can quickly and simply find it. */ | |
835 | current_target.beneath = target_stack; | |
b4b61fdb DJ |
836 | |
837 | if (targetdebug) | |
838 | setup_target_debug (); | |
c906108c SS |
839 | } |
840 | ||
841 | /* Push a new target type into the stack of the existing target accessors, | |
842 | possibly superseding some of the existing accessors. | |
843 | ||
c906108c SS |
844 | Rather than allow an empty stack, we always have the dummy target at |
845 | the bottom stratum, so we can call the function vectors without | |
846 | checking them. */ | |
847 | ||
b26a4dcb | 848 | void |
fba45db2 | 849 | push_target (struct target_ops *t) |
c906108c | 850 | { |
258b763a | 851 | struct target_ops **cur; |
c906108c SS |
852 | |
853 | /* Check magic number. If wrong, it probably means someone changed | |
854 | the struct definition, but not all the places that initialize one. */ | |
855 | if (t->to_magic != OPS_MAGIC) | |
856 | { | |
c5aa993b JM |
857 | fprintf_unfiltered (gdb_stderr, |
858 | "Magic number of %s target struct wrong\n", | |
859 | t->to_shortname); | |
3e43a32a MS |
860 | internal_error (__FILE__, __LINE__, |
861 | _("failed internal consistency check")); | |
c906108c SS |
862 | } |
863 | ||
258b763a AC |
864 | /* Find the proper stratum to install this target in. */ |
865 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
c906108c | 866 | { |
258b763a | 867 | if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum) |
c906108c SS |
868 | break; |
869 | } | |
870 | ||
258b763a | 871 | /* If there's already targets at this stratum, remove them. */ |
88c231eb | 872 | /* FIXME: cagney/2003-10-15: I think this should be popping all |
258b763a AC |
873 | targets to CUR, and not just those at this stratum level. */ |
874 | while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum) | |
875 | { | |
876 | /* There's already something at this stratum level. Close it, | |
877 | and un-hook it from the stack. */ | |
878 | struct target_ops *tmp = (*cur); | |
5d502164 | 879 | |
258b763a AC |
880 | (*cur) = (*cur)->beneath; |
881 | tmp->beneath = NULL; | |
460014f5 | 882 | target_close (tmp); |
258b763a | 883 | } |
c906108c SS |
884 | |
885 | /* We have removed all targets in our stratum, now add the new one. */ | |
258b763a AC |
886 | t->beneath = (*cur); |
887 | (*cur) = t; | |
c906108c SS |
888 | |
889 | update_current_target (); | |
c906108c SS |
890 | } |
891 | ||
2bc416ba | 892 | /* Remove a target_ops vector from the stack, wherever it may be. |
c906108c SS |
893 | Return how many times it was removed (0 or 1). */ |
894 | ||
895 | int | |
fba45db2 | 896 | unpush_target (struct target_ops *t) |
c906108c | 897 | { |
258b763a AC |
898 | struct target_ops **cur; |
899 | struct target_ops *tmp; | |
c906108c | 900 | |
c8d104ad PA |
901 | if (t->to_stratum == dummy_stratum) |
902 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 903 | _("Attempt to unpush the dummy target")); |
c8d104ad | 904 | |
c906108c | 905 | /* Look for the specified target. Note that we assume that a target |
c378eb4e | 906 | can only occur once in the target stack. */ |
c906108c | 907 | |
258b763a AC |
908 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) |
909 | { | |
910 | if ((*cur) == t) | |
911 | break; | |
912 | } | |
c906108c | 913 | |
305436e0 PA |
914 | /* If we don't find target_ops, quit. Only open targets should be |
915 | closed. */ | |
258b763a | 916 | if ((*cur) == NULL) |
305436e0 | 917 | return 0; |
5269965e | 918 | |
c378eb4e | 919 | /* Unchain the target. */ |
258b763a AC |
920 | tmp = (*cur); |
921 | (*cur) = (*cur)->beneath; | |
922 | tmp->beneath = NULL; | |
c906108c SS |
923 | |
924 | update_current_target (); | |
c906108c | 925 | |
305436e0 PA |
926 | /* Finally close the target. Note we do this after unchaining, so |
927 | any target method calls from within the target_close | |
928 | implementation don't end up in T anymore. */ | |
460014f5 | 929 | target_close (t); |
305436e0 | 930 | |
c906108c SS |
931 | return 1; |
932 | } | |
933 | ||
aa76d38d | 934 | void |
460014f5 | 935 | pop_all_targets_above (enum strata above_stratum) |
aa76d38d | 936 | { |
87ab71f0 | 937 | while ((int) (current_target.to_stratum) > (int) above_stratum) |
aa76d38d | 938 | { |
aa76d38d PA |
939 | if (!unpush_target (target_stack)) |
940 | { | |
941 | fprintf_unfiltered (gdb_stderr, | |
942 | "pop_all_targets couldn't find target %s\n", | |
b52323fa | 943 | target_stack->to_shortname); |
aa76d38d PA |
944 | internal_error (__FILE__, __LINE__, |
945 | _("failed internal consistency check")); | |
946 | break; | |
947 | } | |
948 | } | |
949 | } | |
950 | ||
87ab71f0 | 951 | void |
460014f5 | 952 | pop_all_targets (void) |
87ab71f0 | 953 | { |
460014f5 | 954 | pop_all_targets_above (dummy_stratum); |
87ab71f0 PA |
955 | } |
956 | ||
c0edd9ed JK |
957 | /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */ |
958 | ||
959 | int | |
960 | target_is_pushed (struct target_ops *t) | |
961 | { | |
962 | struct target_ops **cur; | |
963 | ||
964 | /* Check magic number. If wrong, it probably means someone changed | |
965 | the struct definition, but not all the places that initialize one. */ | |
966 | if (t->to_magic != OPS_MAGIC) | |
967 | { | |
968 | fprintf_unfiltered (gdb_stderr, | |
969 | "Magic number of %s target struct wrong\n", | |
970 | t->to_shortname); | |
3e43a32a MS |
971 | internal_error (__FILE__, __LINE__, |
972 | _("failed internal consistency check")); | |
c0edd9ed JK |
973 | } |
974 | ||
975 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
976 | if (*cur == t) | |
977 | return 1; | |
978 | ||
979 | return 0; | |
980 | } | |
981 | ||
72f5cf0e | 982 | /* Using the objfile specified in OBJFILE, find the address for the |
9e35dae4 DJ |
983 | current thread's thread-local storage with offset OFFSET. */ |
984 | CORE_ADDR | |
985 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) | |
986 | { | |
987 | volatile CORE_ADDR addr = 0; | |
117de6a9 PA |
988 | struct target_ops *target; |
989 | ||
990 | for (target = current_target.beneath; | |
991 | target != NULL; | |
992 | target = target->beneath) | |
993 | { | |
994 | if (target->to_get_thread_local_address != NULL) | |
995 | break; | |
996 | } | |
9e35dae4 | 997 | |
117de6a9 | 998 | if (target != NULL |
f5656ead | 999 | && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ())) |
9e35dae4 DJ |
1000 | { |
1001 | ptid_t ptid = inferior_ptid; | |
1002 | volatile struct gdb_exception ex; | |
1003 | ||
1004 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
1005 | { | |
1006 | CORE_ADDR lm_addr; | |
1007 | ||
1008 | /* Fetch the load module address for this objfile. */ | |
f5656ead | 1009 | lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch (), |
9e35dae4 DJ |
1010 | objfile); |
1011 | /* If it's 0, throw the appropriate exception. */ | |
1012 | if (lm_addr == 0) | |
1013 | throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR, | |
1014 | _("TLS load module not found")); | |
1015 | ||
3e43a32a MS |
1016 | addr = target->to_get_thread_local_address (target, ptid, |
1017 | lm_addr, offset); | |
9e35dae4 DJ |
1018 | } |
1019 | /* If an error occurred, print TLS related messages here. Otherwise, | |
1020 | throw the error to some higher catcher. */ | |
1021 | if (ex.reason < 0) | |
1022 | { | |
1023 | int objfile_is_library = (objfile->flags & OBJF_SHARED); | |
1024 | ||
1025 | switch (ex.error) | |
1026 | { | |
1027 | case TLS_NO_LIBRARY_SUPPORT_ERROR: | |
3e43a32a MS |
1028 | error (_("Cannot find thread-local variables " |
1029 | "in this thread library.")); | |
9e35dae4 DJ |
1030 | break; |
1031 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: | |
1032 | if (objfile_is_library) | |
1033 | error (_("Cannot find shared library `%s' in dynamic" | |
4262abfb | 1034 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
1035 | else |
1036 | error (_("Cannot find executable file `%s' in dynamic" | |
4262abfb | 1037 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
1038 | break; |
1039 | case TLS_NOT_ALLOCATED_YET_ERROR: | |
1040 | if (objfile_is_library) | |
1041 | error (_("The inferior has not yet allocated storage for" | |
1042 | " thread-local variables in\n" | |
1043 | "the shared library `%s'\n" | |
1044 | "for %s"), | |
4262abfb | 1045 | objfile_name (objfile), target_pid_to_str (ptid)); |
9e35dae4 DJ |
1046 | else |
1047 | error (_("The inferior has not yet allocated storage for" | |
1048 | " thread-local variables in\n" | |
1049 | "the executable `%s'\n" | |
1050 | "for %s"), | |
4262abfb | 1051 | objfile_name (objfile), target_pid_to_str (ptid)); |
9e35dae4 DJ |
1052 | break; |
1053 | case TLS_GENERIC_ERROR: | |
1054 | if (objfile_is_library) | |
1055 | error (_("Cannot find thread-local storage for %s, " | |
1056 | "shared library %s:\n%s"), | |
1057 | target_pid_to_str (ptid), | |
4262abfb | 1058 | objfile_name (objfile), ex.message); |
9e35dae4 DJ |
1059 | else |
1060 | error (_("Cannot find thread-local storage for %s, " | |
1061 | "executable file %s:\n%s"), | |
1062 | target_pid_to_str (ptid), | |
4262abfb | 1063 | objfile_name (objfile), ex.message); |
9e35dae4 DJ |
1064 | break; |
1065 | default: | |
1066 | throw_exception (ex); | |
1067 | break; | |
1068 | } | |
1069 | } | |
1070 | } | |
1071 | /* It wouldn't be wrong here to try a gdbarch method, too; finding | |
1072 | TLS is an ABI-specific thing. But we don't do that yet. */ | |
1073 | else | |
1074 | error (_("Cannot find thread-local variables on this target")); | |
1075 | ||
1076 | return addr; | |
1077 | } | |
1078 | ||
6be7b56e | 1079 | const char * |
9b409511 | 1080 | target_xfer_status_to_string (enum target_xfer_status err) |
6be7b56e PA |
1081 | { |
1082 | #define CASE(X) case X: return #X | |
1083 | switch (err) | |
1084 | { | |
1085 | CASE(TARGET_XFER_E_IO); | |
1086 | CASE(TARGET_XFER_E_UNAVAILABLE); | |
1087 | default: | |
1088 | return "<unknown>"; | |
1089 | } | |
1090 | #undef CASE | |
1091 | }; | |
1092 | ||
1093 | ||
c906108c SS |
1094 | #undef MIN |
1095 | #define MIN(A, B) (((A) <= (B)) ? (A) : (B)) | |
1096 | ||
1097 | /* target_read_string -- read a null terminated string, up to LEN bytes, | |
1098 | from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful. | |
1099 | Set *STRING to a pointer to malloc'd memory containing the data; the caller | |
1100 | is responsible for freeing it. Return the number of bytes successfully | |
1101 | read. */ | |
1102 | ||
1103 | int | |
fba45db2 | 1104 | target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop) |
c906108c | 1105 | { |
c2e8b827 | 1106 | int tlen, offset, i; |
1b0ba102 | 1107 | gdb_byte buf[4]; |
c906108c SS |
1108 | int errcode = 0; |
1109 | char *buffer; | |
1110 | int buffer_allocated; | |
1111 | char *bufptr; | |
1112 | unsigned int nbytes_read = 0; | |
1113 | ||
6217bf3e MS |
1114 | gdb_assert (string); |
1115 | ||
c906108c SS |
1116 | /* Small for testing. */ |
1117 | buffer_allocated = 4; | |
1118 | buffer = xmalloc (buffer_allocated); | |
1119 | bufptr = buffer; | |
1120 | ||
c906108c SS |
1121 | while (len > 0) |
1122 | { | |
1123 | tlen = MIN (len, 4 - (memaddr & 3)); | |
1124 | offset = memaddr & 3; | |
1125 | ||
1b0ba102 | 1126 | errcode = target_read_memory (memaddr & ~3, buf, sizeof buf); |
c906108c SS |
1127 | if (errcode != 0) |
1128 | { | |
1129 | /* The transfer request might have crossed the boundary to an | |
c378eb4e | 1130 | unallocated region of memory. Retry the transfer, requesting |
c906108c SS |
1131 | a single byte. */ |
1132 | tlen = 1; | |
1133 | offset = 0; | |
b8eb5af0 | 1134 | errcode = target_read_memory (memaddr, buf, 1); |
c906108c SS |
1135 | if (errcode != 0) |
1136 | goto done; | |
1137 | } | |
1138 | ||
1139 | if (bufptr - buffer + tlen > buffer_allocated) | |
1140 | { | |
1141 | unsigned int bytes; | |
5d502164 | 1142 | |
c906108c SS |
1143 | bytes = bufptr - buffer; |
1144 | buffer_allocated *= 2; | |
1145 | buffer = xrealloc (buffer, buffer_allocated); | |
1146 | bufptr = buffer + bytes; | |
1147 | } | |
1148 | ||
1149 | for (i = 0; i < tlen; i++) | |
1150 | { | |
1151 | *bufptr++ = buf[i + offset]; | |
1152 | if (buf[i + offset] == '\000') | |
1153 | { | |
1154 | nbytes_read += i + 1; | |
1155 | goto done; | |
1156 | } | |
1157 | } | |
1158 | ||
1159 | memaddr += tlen; | |
1160 | len -= tlen; | |
1161 | nbytes_read += tlen; | |
1162 | } | |
c5aa993b | 1163 | done: |
6217bf3e | 1164 | *string = buffer; |
c906108c SS |
1165 | if (errnop != NULL) |
1166 | *errnop = errcode; | |
c906108c SS |
1167 | return nbytes_read; |
1168 | } | |
1169 | ||
07b82ea5 PA |
1170 | struct target_section_table * |
1171 | target_get_section_table (struct target_ops *target) | |
1172 | { | |
1173 | struct target_ops *t; | |
1174 | ||
1175 | if (targetdebug) | |
1176 | fprintf_unfiltered (gdb_stdlog, "target_get_section_table ()\n"); | |
1177 | ||
1178 | for (t = target; t != NULL; t = t->beneath) | |
1179 | if (t->to_get_section_table != NULL) | |
1180 | return (*t->to_get_section_table) (t); | |
1181 | ||
1182 | return NULL; | |
1183 | } | |
1184 | ||
8db32d44 | 1185 | /* Find a section containing ADDR. */ |
07b82ea5 | 1186 | |
0542c86d | 1187 | struct target_section * |
8db32d44 AC |
1188 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
1189 | { | |
07b82ea5 | 1190 | struct target_section_table *table = target_get_section_table (target); |
0542c86d | 1191 | struct target_section *secp; |
07b82ea5 PA |
1192 | |
1193 | if (table == NULL) | |
1194 | return NULL; | |
1195 | ||
1196 | for (secp = table->sections; secp < table->sections_end; secp++) | |
8db32d44 AC |
1197 | { |
1198 | if (addr >= secp->addr && addr < secp->endaddr) | |
1199 | return secp; | |
1200 | } | |
1201 | return NULL; | |
1202 | } | |
1203 | ||
e6e4e701 PA |
1204 | /* Read memory from the live target, even if currently inspecting a |
1205 | traceframe. The return is the same as that of target_read. */ | |
1206 | ||
9b409511 | 1207 | static enum target_xfer_status |
e6e4e701 | 1208 | target_read_live_memory (enum target_object object, |
9b409511 YQ |
1209 | ULONGEST memaddr, gdb_byte *myaddr, ULONGEST len, |
1210 | ULONGEST *xfered_len) | |
e6e4e701 | 1211 | { |
9b409511 | 1212 | enum target_xfer_status ret; |
e6e4e701 PA |
1213 | struct cleanup *cleanup; |
1214 | ||
1215 | /* Switch momentarily out of tfind mode so to access live memory. | |
1216 | Note that this must not clear global state, such as the frame | |
1217 | cache, which must still remain valid for the previous traceframe. | |
1218 | We may be _building_ the frame cache at this point. */ | |
1219 | cleanup = make_cleanup_restore_traceframe_number (); | |
1220 | set_traceframe_number (-1); | |
1221 | ||
9b409511 YQ |
1222 | ret = target_xfer_partial (current_target.beneath, object, NULL, |
1223 | myaddr, NULL, memaddr, len, xfered_len); | |
e6e4e701 PA |
1224 | |
1225 | do_cleanups (cleanup); | |
1226 | return ret; | |
1227 | } | |
1228 | ||
1229 | /* Using the set of read-only target sections of OPS, read live | |
1230 | read-only memory. Note that the actual reads start from the | |
5657161f PA |
1231 | top-most target again. |
1232 | ||
1233 | For interface/parameters/return description see target.h, | |
1234 | to_xfer_partial. */ | |
e6e4e701 | 1235 | |
9b409511 | 1236 | static enum target_xfer_status |
e6e4e701 PA |
1237 | memory_xfer_live_readonly_partial (struct target_ops *ops, |
1238 | enum target_object object, | |
1239 | gdb_byte *readbuf, ULONGEST memaddr, | |
9b409511 | 1240 | ULONGEST len, ULONGEST *xfered_len) |
e6e4e701 PA |
1241 | { |
1242 | struct target_section *secp; | |
1243 | struct target_section_table *table; | |
1244 | ||
1245 | secp = target_section_by_addr (ops, memaddr); | |
1246 | if (secp != NULL | |
2b2848e2 DE |
1247 | && (bfd_get_section_flags (secp->the_bfd_section->owner, |
1248 | secp->the_bfd_section) | |
e6e4e701 PA |
1249 | & SEC_READONLY)) |
1250 | { | |
1251 | struct target_section *p; | |
1252 | ULONGEST memend = memaddr + len; | |
1253 | ||
1254 | table = target_get_section_table (ops); | |
1255 | ||
1256 | for (p = table->sections; p < table->sections_end; p++) | |
1257 | { | |
1258 | if (memaddr >= p->addr) | |
1259 | { | |
1260 | if (memend <= p->endaddr) | |
1261 | { | |
1262 | /* Entire transfer is within this section. */ | |
1263 | return target_read_live_memory (object, memaddr, | |
9b409511 | 1264 | readbuf, len, xfered_len); |
e6e4e701 PA |
1265 | } |
1266 | else if (memaddr >= p->endaddr) | |
1267 | { | |
1268 | /* This section ends before the transfer starts. */ | |
1269 | continue; | |
1270 | } | |
1271 | else | |
1272 | { | |
1273 | /* This section overlaps the transfer. Just do half. */ | |
1274 | len = p->endaddr - memaddr; | |
1275 | return target_read_live_memory (object, memaddr, | |
9b409511 | 1276 | readbuf, len, xfered_len); |
e6e4e701 PA |
1277 | } |
1278 | } | |
1279 | } | |
1280 | } | |
1281 | ||
9b409511 | 1282 | return TARGET_XFER_EOF; |
e6e4e701 PA |
1283 | } |
1284 | ||
9f713294 YQ |
1285 | /* Read memory from more than one valid target. A core file, for |
1286 | instance, could have some of memory but delegate other bits to | |
1287 | the target below it. So, we must manually try all targets. */ | |
1288 | ||
9b409511 | 1289 | static enum target_xfer_status |
17fde6d0 | 1290 | raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf, |
9b409511 YQ |
1291 | const gdb_byte *writebuf, ULONGEST memaddr, LONGEST len, |
1292 | ULONGEST *xfered_len) | |
9f713294 | 1293 | { |
9b409511 | 1294 | enum target_xfer_status res; |
9f713294 YQ |
1295 | |
1296 | do | |
1297 | { | |
1298 | res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 YQ |
1299 | readbuf, writebuf, memaddr, len, |
1300 | xfered_len); | |
1301 | if (res == TARGET_XFER_OK) | |
9f713294 YQ |
1302 | break; |
1303 | ||
633785ff MM |
1304 | /* Stop if the target reports that the memory is not available. */ |
1305 | if (res == TARGET_XFER_E_UNAVAILABLE) | |
1306 | break; | |
1307 | ||
9f713294 YQ |
1308 | /* We want to continue past core files to executables, but not |
1309 | past a running target's memory. */ | |
1310 | if (ops->to_has_all_memory (ops)) | |
1311 | break; | |
1312 | ||
1313 | ops = ops->beneath; | |
1314 | } | |
1315 | while (ops != NULL); | |
1316 | ||
1317 | return res; | |
1318 | } | |
1319 | ||
7f79c47e DE |
1320 | /* Perform a partial memory transfer. |
1321 | For docs see target.h, to_xfer_partial. */ | |
cf7a04e8 | 1322 | |
9b409511 | 1323 | static enum target_xfer_status |
f0ba3972 | 1324 | memory_xfer_partial_1 (struct target_ops *ops, enum target_object object, |
17fde6d0 | 1325 | gdb_byte *readbuf, const gdb_byte *writebuf, ULONGEST memaddr, |
9b409511 | 1326 | ULONGEST len, ULONGEST *xfered_len) |
0779438d | 1327 | { |
9b409511 | 1328 | enum target_xfer_status res; |
cf7a04e8 DJ |
1329 | int reg_len; |
1330 | struct mem_region *region; | |
4e5d721f | 1331 | struct inferior *inf; |
cf7a04e8 | 1332 | |
07b82ea5 PA |
1333 | /* For accesses to unmapped overlay sections, read directly from |
1334 | files. Must do this first, as MEMADDR may need adjustment. */ | |
1335 | if (readbuf != NULL && overlay_debugging) | |
1336 | { | |
1337 | struct obj_section *section = find_pc_overlay (memaddr); | |
5d502164 | 1338 | |
07b82ea5 PA |
1339 | if (pc_in_unmapped_range (memaddr, section)) |
1340 | { | |
1341 | struct target_section_table *table | |
1342 | = target_get_section_table (ops); | |
1343 | const char *section_name = section->the_bfd_section->name; | |
5d502164 | 1344 | |
07b82ea5 PA |
1345 | memaddr = overlay_mapped_address (memaddr, section); |
1346 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 1347 | memaddr, len, xfered_len, |
07b82ea5 PA |
1348 | table->sections, |
1349 | table->sections_end, | |
1350 | section_name); | |
1351 | } | |
1352 | } | |
1353 | ||
1354 | /* Try the executable files, if "trust-readonly-sections" is set. */ | |
cf7a04e8 DJ |
1355 | if (readbuf != NULL && trust_readonly) |
1356 | { | |
0542c86d | 1357 | struct target_section *secp; |
07b82ea5 | 1358 | struct target_section_table *table; |
cf7a04e8 DJ |
1359 | |
1360 | secp = target_section_by_addr (ops, memaddr); | |
1361 | if (secp != NULL | |
2b2848e2 DE |
1362 | && (bfd_get_section_flags (secp->the_bfd_section->owner, |
1363 | secp->the_bfd_section) | |
cf7a04e8 | 1364 | & SEC_READONLY)) |
07b82ea5 PA |
1365 | { |
1366 | table = target_get_section_table (ops); | |
1367 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 1368 | memaddr, len, xfered_len, |
07b82ea5 PA |
1369 | table->sections, |
1370 | table->sections_end, | |
1371 | NULL); | |
1372 | } | |
98646950 UW |
1373 | } |
1374 | ||
e6e4e701 PA |
1375 | /* If reading unavailable memory in the context of traceframes, and |
1376 | this address falls within a read-only section, fallback to | |
1377 | reading from live memory. */ | |
1378 | if (readbuf != NULL && get_traceframe_number () != -1) | |
1379 | { | |
1380 | VEC(mem_range_s) *available; | |
1381 | ||
1382 | /* If we fail to get the set of available memory, then the | |
1383 | target does not support querying traceframe info, and so we | |
1384 | attempt reading from the traceframe anyway (assuming the | |
1385 | target implements the old QTro packet then). */ | |
1386 | if (traceframe_available_memory (&available, memaddr, len)) | |
1387 | { | |
1388 | struct cleanup *old_chain; | |
1389 | ||
1390 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available); | |
1391 | ||
1392 | if (VEC_empty (mem_range_s, available) | |
1393 | || VEC_index (mem_range_s, available, 0)->start != memaddr) | |
1394 | { | |
1395 | /* Don't read into the traceframe's available | |
1396 | memory. */ | |
1397 | if (!VEC_empty (mem_range_s, available)) | |
1398 | { | |
1399 | LONGEST oldlen = len; | |
1400 | ||
1401 | len = VEC_index (mem_range_s, available, 0)->start - memaddr; | |
1402 | gdb_assert (len <= oldlen); | |
1403 | } | |
1404 | ||
1405 | do_cleanups (old_chain); | |
1406 | ||
1407 | /* This goes through the topmost target again. */ | |
1408 | res = memory_xfer_live_readonly_partial (ops, object, | |
9b409511 YQ |
1409 | readbuf, memaddr, |
1410 | len, xfered_len); | |
1411 | if (res == TARGET_XFER_OK) | |
1412 | return TARGET_XFER_OK; | |
1413 | else | |
1414 | { | |
1415 | /* No use trying further, we know some memory starting | |
1416 | at MEMADDR isn't available. */ | |
1417 | *xfered_len = len; | |
1418 | return TARGET_XFER_E_UNAVAILABLE; | |
1419 | } | |
e6e4e701 PA |
1420 | } |
1421 | ||
1422 | /* Don't try to read more than how much is available, in | |
1423 | case the target implements the deprecated QTro packet to | |
1424 | cater for older GDBs (the target's knowledge of read-only | |
1425 | sections may be outdated by now). */ | |
1426 | len = VEC_index (mem_range_s, available, 0)->length; | |
1427 | ||
1428 | do_cleanups (old_chain); | |
1429 | } | |
1430 | } | |
1431 | ||
cf7a04e8 DJ |
1432 | /* Try GDB's internal data cache. */ |
1433 | region = lookup_mem_region (memaddr); | |
4b5752d0 VP |
1434 | /* region->hi == 0 means there's no upper bound. */ |
1435 | if (memaddr + len < region->hi || region->hi == 0) | |
cf7a04e8 DJ |
1436 | reg_len = len; |
1437 | else | |
1438 | reg_len = region->hi - memaddr; | |
1439 | ||
1440 | switch (region->attrib.mode) | |
1441 | { | |
1442 | case MEM_RO: | |
1443 | if (writebuf != NULL) | |
2ed4b548 | 1444 | return TARGET_XFER_E_IO; |
cf7a04e8 DJ |
1445 | break; |
1446 | ||
1447 | case MEM_WO: | |
1448 | if (readbuf != NULL) | |
2ed4b548 | 1449 | return TARGET_XFER_E_IO; |
cf7a04e8 | 1450 | break; |
a76d924d DJ |
1451 | |
1452 | case MEM_FLASH: | |
1453 | /* We only support writing to flash during "load" for now. */ | |
1454 | if (writebuf != NULL) | |
1455 | error (_("Writing to flash memory forbidden in this context")); | |
1456 | break; | |
4b5752d0 VP |
1457 | |
1458 | case MEM_NONE: | |
2ed4b548 | 1459 | return TARGET_XFER_E_IO; |
cf7a04e8 DJ |
1460 | } |
1461 | ||
6c95b8df PA |
1462 | if (!ptid_equal (inferior_ptid, null_ptid)) |
1463 | inf = find_inferior_pid (ptid_get_pid (inferior_ptid)); | |
1464 | else | |
1465 | inf = NULL; | |
4e5d721f DE |
1466 | |
1467 | if (inf != NULL | |
2f4d8875 PA |
1468 | /* The dcache reads whole cache lines; that doesn't play well |
1469 | with reading from a trace buffer, because reading outside of | |
1470 | the collected memory range fails. */ | |
1471 | && get_traceframe_number () == -1 | |
4e5d721f | 1472 | && (region->attrib.cache |
29453a14 YQ |
1473 | || (stack_cache_enabled_p () && object == TARGET_OBJECT_STACK_MEMORY) |
1474 | || (code_cache_enabled_p () && object == TARGET_OBJECT_CODE_MEMORY))) | |
cf7a04e8 | 1475 | { |
2a2f9fe4 | 1476 | DCACHE *dcache = target_dcache_get_or_init (); |
9b409511 | 1477 | int l; |
2a2f9fe4 | 1478 | |
cf7a04e8 | 1479 | if (readbuf != NULL) |
9b409511 | 1480 | l = dcache_xfer_memory (ops, dcache, memaddr, readbuf, reg_len, 0); |
cf7a04e8 DJ |
1481 | else |
1482 | /* FIXME drow/2006-08-09: If we're going to preserve const | |
1483 | correctness dcache_xfer_memory should take readbuf and | |
1484 | writebuf. */ | |
9b409511 | 1485 | l = dcache_xfer_memory (ops, dcache, memaddr, (void *) writebuf, |
cf7a04e8 | 1486 | reg_len, 1); |
9b409511 YQ |
1487 | if (l <= 0) |
1488 | return TARGET_XFER_E_IO; | |
cf7a04e8 | 1489 | else |
9b409511 YQ |
1490 | { |
1491 | *xfered_len = (ULONGEST) l; | |
1492 | return TARGET_XFER_OK; | |
1493 | } | |
cf7a04e8 DJ |
1494 | } |
1495 | ||
1496 | /* If none of those methods found the memory we wanted, fall back | |
1497 | to a target partial transfer. Normally a single call to | |
1498 | to_xfer_partial is enough; if it doesn't recognize an object | |
1499 | it will call the to_xfer_partial of the next target down. | |
1500 | But for memory this won't do. Memory is the only target | |
9b409511 YQ |
1501 | object which can be read from more than one valid target. |
1502 | A core file, for instance, could have some of memory but | |
1503 | delegate other bits to the target below it. So, we must | |
1504 | manually try all targets. */ | |
1505 | ||
1506 | res = raw_memory_xfer_partial (ops, readbuf, writebuf, memaddr, reg_len, | |
1507 | xfered_len); | |
cf7a04e8 | 1508 | |
41dcd03f DE |
1509 | /* Make sure the cache gets updated no matter what - if we are writing |
1510 | to the stack. Even if this write is not tagged as such, we still need | |
1511 | to update the cache. */ | |
1512 | ||
9b409511 | 1513 | if (res == TARGET_XFER_OK |
41dcd03f DE |
1514 | && inf != NULL |
1515 | && writebuf != NULL | |
f2de9785 | 1516 | && target_dcache_init_p () |
41dcd03f | 1517 | && !region->attrib.cache |
29453a14 YQ |
1518 | && ((stack_cache_enabled_p () && object != TARGET_OBJECT_STACK_MEMORY) |
1519 | || (code_cache_enabled_p () && object != TARGET_OBJECT_CODE_MEMORY))) | |
41dcd03f | 1520 | { |
f2de9785 | 1521 | DCACHE *dcache = target_dcache_get (); |
2a2f9fe4 | 1522 | |
9b409511 | 1523 | dcache_update (dcache, memaddr, (void *) writebuf, reg_len); |
41dcd03f DE |
1524 | } |
1525 | ||
cf7a04e8 DJ |
1526 | /* If we still haven't got anything, return the last error. We |
1527 | give up. */ | |
1528 | return res; | |
0779438d AC |
1529 | } |
1530 | ||
f0ba3972 PA |
1531 | /* Perform a partial memory transfer. For docs see target.h, |
1532 | to_xfer_partial. */ | |
1533 | ||
9b409511 | 1534 | static enum target_xfer_status |
f0ba3972 | 1535 | memory_xfer_partial (struct target_ops *ops, enum target_object object, |
9b409511 YQ |
1536 | gdb_byte *readbuf, const gdb_byte *writebuf, |
1537 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) | |
f0ba3972 | 1538 | { |
9b409511 | 1539 | enum target_xfer_status res; |
f0ba3972 PA |
1540 | |
1541 | /* Zero length requests are ok and require no work. */ | |
1542 | if (len == 0) | |
9b409511 | 1543 | return TARGET_XFER_EOF; |
f0ba3972 PA |
1544 | |
1545 | /* Fill in READBUF with breakpoint shadows, or WRITEBUF with | |
1546 | breakpoint insns, thus hiding out from higher layers whether | |
1547 | there are software breakpoints inserted in the code stream. */ | |
1548 | if (readbuf != NULL) | |
1549 | { | |
9b409511 YQ |
1550 | res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len, |
1551 | xfered_len); | |
f0ba3972 | 1552 | |
9b409511 | 1553 | if (res == TARGET_XFER_OK && !show_memory_breakpoints) |
f0ba3972 PA |
1554 | breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, res); |
1555 | } | |
1556 | else | |
1557 | { | |
1558 | void *buf; | |
1559 | struct cleanup *old_chain; | |
1560 | ||
67c059c2 AB |
1561 | /* A large write request is likely to be partially satisfied |
1562 | by memory_xfer_partial_1. We will continually malloc | |
1563 | and free a copy of the entire write request for breakpoint | |
1564 | shadow handling even though we only end up writing a small | |
1565 | subset of it. Cap writes to 4KB to mitigate this. */ | |
1566 | len = min (4096, len); | |
1567 | ||
f0ba3972 PA |
1568 | buf = xmalloc (len); |
1569 | old_chain = make_cleanup (xfree, buf); | |
1570 | memcpy (buf, writebuf, len); | |
1571 | ||
1572 | breakpoint_xfer_memory (NULL, buf, writebuf, memaddr, len); | |
9b409511 YQ |
1573 | res = memory_xfer_partial_1 (ops, object, NULL, buf, memaddr, len, |
1574 | xfered_len); | |
f0ba3972 PA |
1575 | |
1576 | do_cleanups (old_chain); | |
1577 | } | |
1578 | ||
1579 | return res; | |
1580 | } | |
1581 | ||
8defab1a DJ |
1582 | static void |
1583 | restore_show_memory_breakpoints (void *arg) | |
1584 | { | |
1585 | show_memory_breakpoints = (uintptr_t) arg; | |
1586 | } | |
1587 | ||
1588 | struct cleanup * | |
1589 | make_show_memory_breakpoints_cleanup (int show) | |
1590 | { | |
1591 | int current = show_memory_breakpoints; | |
8defab1a | 1592 | |
5d502164 | 1593 | show_memory_breakpoints = show; |
8defab1a DJ |
1594 | return make_cleanup (restore_show_memory_breakpoints, |
1595 | (void *) (uintptr_t) current); | |
1596 | } | |
1597 | ||
7f79c47e DE |
1598 | /* For docs see target.h, to_xfer_partial. */ |
1599 | ||
9b409511 | 1600 | enum target_xfer_status |
27394598 AC |
1601 | target_xfer_partial (struct target_ops *ops, |
1602 | enum target_object object, const char *annex, | |
4ac248ca | 1603 | gdb_byte *readbuf, const gdb_byte *writebuf, |
9b409511 YQ |
1604 | ULONGEST offset, ULONGEST len, |
1605 | ULONGEST *xfered_len) | |
27394598 | 1606 | { |
9b409511 | 1607 | enum target_xfer_status retval; |
27394598 AC |
1608 | |
1609 | gdb_assert (ops->to_xfer_partial != NULL); | |
cf7a04e8 | 1610 | |
ce6d0892 YQ |
1611 | /* Transfer is done when LEN is zero. */ |
1612 | if (len == 0) | |
9b409511 | 1613 | return TARGET_XFER_EOF; |
ce6d0892 | 1614 | |
d914c394 SS |
1615 | if (writebuf && !may_write_memory) |
1616 | error (_("Writing to memory is not allowed (addr %s, len %s)"), | |
1617 | core_addr_to_string_nz (offset), plongest (len)); | |
1618 | ||
9b409511 YQ |
1619 | *xfered_len = 0; |
1620 | ||
cf7a04e8 DJ |
1621 | /* If this is a memory transfer, let the memory-specific code |
1622 | have a look at it instead. Memory transfers are more | |
1623 | complicated. */ | |
29453a14 YQ |
1624 | if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY |
1625 | || object == TARGET_OBJECT_CODE_MEMORY) | |
4e5d721f | 1626 | retval = memory_xfer_partial (ops, object, readbuf, |
9b409511 | 1627 | writebuf, offset, len, xfered_len); |
9f713294 | 1628 | else if (object == TARGET_OBJECT_RAW_MEMORY) |
cf7a04e8 | 1629 | { |
9f713294 | 1630 | /* Request the normal memory object from other layers. */ |
9b409511 YQ |
1631 | retval = raw_memory_xfer_partial (ops, readbuf, writebuf, offset, len, |
1632 | xfered_len); | |
cf7a04e8 | 1633 | } |
9f713294 YQ |
1634 | else |
1635 | retval = ops->to_xfer_partial (ops, object, annex, readbuf, | |
9b409511 | 1636 | writebuf, offset, len, xfered_len); |
cf7a04e8 | 1637 | |
27394598 AC |
1638 | if (targetdebug) |
1639 | { | |
1640 | const unsigned char *myaddr = NULL; | |
1641 | ||
1642 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a | 1643 | "%s:target_xfer_partial " |
9b409511 | 1644 | "(%d, %s, %s, %s, %s, %s) = %d, %s", |
27394598 AC |
1645 | ops->to_shortname, |
1646 | (int) object, | |
1647 | (annex ? annex : "(null)"), | |
53b71562 JB |
1648 | host_address_to_string (readbuf), |
1649 | host_address_to_string (writebuf), | |
0b1553bc | 1650 | core_addr_to_string_nz (offset), |
9b409511 YQ |
1651 | pulongest (len), retval, |
1652 | pulongest (*xfered_len)); | |
27394598 AC |
1653 | |
1654 | if (readbuf) | |
1655 | myaddr = readbuf; | |
1656 | if (writebuf) | |
1657 | myaddr = writebuf; | |
9b409511 | 1658 | if (retval == TARGET_XFER_OK && myaddr != NULL) |
27394598 AC |
1659 | { |
1660 | int i; | |
2bc416ba | 1661 | |
27394598 | 1662 | fputs_unfiltered (", bytes =", gdb_stdlog); |
9b409511 | 1663 | for (i = 0; i < *xfered_len; i++) |
27394598 | 1664 | { |
53b71562 | 1665 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1666 | { |
1667 | if (targetdebug < 2 && i > 0) | |
1668 | { | |
1669 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
1670 | break; | |
1671 | } | |
1672 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1673 | } | |
2bc416ba | 1674 | |
27394598 AC |
1675 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
1676 | } | |
1677 | } | |
2bc416ba | 1678 | |
27394598 AC |
1679 | fputc_unfiltered ('\n', gdb_stdlog); |
1680 | } | |
9b409511 YQ |
1681 | |
1682 | /* Check implementations of to_xfer_partial update *XFERED_LEN | |
1683 | properly. Do assertion after printing debug messages, so that we | |
1684 | can find more clues on assertion failure from debugging messages. */ | |
1685 | if (retval == TARGET_XFER_OK || retval == TARGET_XFER_E_UNAVAILABLE) | |
1686 | gdb_assert (*xfered_len > 0); | |
1687 | ||
27394598 AC |
1688 | return retval; |
1689 | } | |
1690 | ||
578d3588 PA |
1691 | /* Read LEN bytes of target memory at address MEMADDR, placing the |
1692 | results in GDB's memory at MYADDR. Returns either 0 for success or | |
9b409511 | 1693 | TARGET_XFER_E_IO if any error occurs. |
c906108c SS |
1694 | |
1695 | If an error occurs, no guarantee is made about the contents of the data at | |
1696 | MYADDR. In particular, the caller should not depend upon partial reads | |
1697 | filling the buffer with good data. There is no way for the caller to know | |
1698 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 | 1699 | deal with partial reads should call target_read (which will retry until |
c378eb4e | 1700 | it makes no progress, and then return how much was transferred). */ |
c906108c SS |
1701 | |
1702 | int | |
1b162304 | 1703 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
c906108c | 1704 | { |
c35b1492 PA |
1705 | /* Dispatch to the topmost target, not the flattened current_target. |
1706 | Memory accesses check target->to_has_(all_)memory, and the | |
1707 | flattened target doesn't inherit those. */ | |
1708 | if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1709 | myaddr, memaddr, len) == len) |
1710 | return 0; | |
0779438d | 1711 | else |
578d3588 | 1712 | return TARGET_XFER_E_IO; |
c906108c SS |
1713 | } |
1714 | ||
aee4bf85 PA |
1715 | /* Like target_read_memory, but specify explicitly that this is a read |
1716 | from the target's raw memory. That is, this read bypasses the | |
1717 | dcache, breakpoint shadowing, etc. */ | |
1718 | ||
1719 | int | |
1720 | target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1721 | { | |
1722 | /* See comment in target_read_memory about why the request starts at | |
1723 | current_target.beneath. */ | |
1724 | if (target_read (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, | |
1725 | myaddr, memaddr, len) == len) | |
1726 | return 0; | |
1727 | else | |
1728 | return TARGET_XFER_E_IO; | |
1729 | } | |
1730 | ||
4e5d721f DE |
1731 | /* Like target_read_memory, but specify explicitly that this is a read from |
1732 | the target's stack. This may trigger different cache behavior. */ | |
1733 | ||
1734 | int | |
45aa4659 | 1735 | target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
4e5d721f | 1736 | { |
aee4bf85 PA |
1737 | /* See comment in target_read_memory about why the request starts at |
1738 | current_target.beneath. */ | |
4e5d721f DE |
1739 | if (target_read (current_target.beneath, TARGET_OBJECT_STACK_MEMORY, NULL, |
1740 | myaddr, memaddr, len) == len) | |
1741 | return 0; | |
1742 | else | |
578d3588 | 1743 | return TARGET_XFER_E_IO; |
4e5d721f DE |
1744 | } |
1745 | ||
29453a14 YQ |
1746 | /* Like target_read_memory, but specify explicitly that this is a read from |
1747 | the target's code. This may trigger different cache behavior. */ | |
1748 | ||
1749 | int | |
1750 | target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1751 | { | |
aee4bf85 PA |
1752 | /* See comment in target_read_memory about why the request starts at |
1753 | current_target.beneath. */ | |
29453a14 YQ |
1754 | if (target_read (current_target.beneath, TARGET_OBJECT_CODE_MEMORY, NULL, |
1755 | myaddr, memaddr, len) == len) | |
1756 | return 0; | |
1757 | else | |
1758 | return TARGET_XFER_E_IO; | |
1759 | } | |
1760 | ||
7f79c47e | 1761 | /* Write LEN bytes from MYADDR to target memory at address MEMADDR. |
9b409511 | 1762 | Returns either 0 for success or TARGET_XFER_E_IO if any |
578d3588 PA |
1763 | error occurs. If an error occurs, no guarantee is made about how |
1764 | much data got written. Callers that can deal with partial writes | |
1765 | should call target_write. */ | |
7f79c47e | 1766 | |
c906108c | 1767 | int |
45aa4659 | 1768 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
c906108c | 1769 | { |
aee4bf85 PA |
1770 | /* See comment in target_read_memory about why the request starts at |
1771 | current_target.beneath. */ | |
c35b1492 | 1772 | if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, |
cf7a04e8 DJ |
1773 | myaddr, memaddr, len) == len) |
1774 | return 0; | |
0779438d | 1775 | else |
578d3588 | 1776 | return TARGET_XFER_E_IO; |
c906108c | 1777 | } |
c5aa993b | 1778 | |
f0ba3972 | 1779 | /* Write LEN bytes from MYADDR to target raw memory at address |
9b409511 | 1780 | MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO |
578d3588 PA |
1781 | if any error occurs. If an error occurs, no guarantee is made |
1782 | about how much data got written. Callers that can deal with | |
1783 | partial writes should call target_write. */ | |
f0ba3972 PA |
1784 | |
1785 | int | |
45aa4659 | 1786 | target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
f0ba3972 | 1787 | { |
aee4bf85 PA |
1788 | /* See comment in target_read_memory about why the request starts at |
1789 | current_target.beneath. */ | |
f0ba3972 PA |
1790 | if (target_write (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, |
1791 | myaddr, memaddr, len) == len) | |
1792 | return 0; | |
1793 | else | |
578d3588 | 1794 | return TARGET_XFER_E_IO; |
f0ba3972 PA |
1795 | } |
1796 | ||
fd79ecee DJ |
1797 | /* Fetch the target's memory map. */ |
1798 | ||
1799 | VEC(mem_region_s) * | |
1800 | target_memory_map (void) | |
1801 | { | |
1802 | VEC(mem_region_s) *result; | |
1803 | struct mem_region *last_one, *this_one; | |
1804 | int ix; | |
1805 | struct target_ops *t; | |
1806 | ||
1807 | if (targetdebug) | |
1808 | fprintf_unfiltered (gdb_stdlog, "target_memory_map ()\n"); | |
1809 | ||
1810 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1811 | if (t->to_memory_map != NULL) | |
1812 | break; | |
1813 | ||
1814 | if (t == NULL) | |
1815 | return NULL; | |
1816 | ||
1817 | result = t->to_memory_map (t); | |
1818 | if (result == NULL) | |
1819 | return NULL; | |
1820 | ||
1821 | qsort (VEC_address (mem_region_s, result), | |
1822 | VEC_length (mem_region_s, result), | |
1823 | sizeof (struct mem_region), mem_region_cmp); | |
1824 | ||
1825 | /* Check that regions do not overlap. Simultaneously assign | |
1826 | a numbering for the "mem" commands to use to refer to | |
1827 | each region. */ | |
1828 | last_one = NULL; | |
1829 | for (ix = 0; VEC_iterate (mem_region_s, result, ix, this_one); ix++) | |
1830 | { | |
1831 | this_one->number = ix; | |
1832 | ||
1833 | if (last_one && last_one->hi > this_one->lo) | |
1834 | { | |
1835 | warning (_("Overlapping regions in memory map: ignoring")); | |
1836 | VEC_free (mem_region_s, result); | |
1837 | return NULL; | |
1838 | } | |
1839 | last_one = this_one; | |
1840 | } | |
1841 | ||
1842 | return result; | |
1843 | } | |
1844 | ||
a76d924d DJ |
1845 | void |
1846 | target_flash_erase (ULONGEST address, LONGEST length) | |
1847 | { | |
1848 | struct target_ops *t; | |
1849 | ||
1850 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1851 | if (t->to_flash_erase != NULL) | |
5d502164 MS |
1852 | { |
1853 | if (targetdebug) | |
1854 | fprintf_unfiltered (gdb_stdlog, "target_flash_erase (%s, %s)\n", | |
1855 | hex_string (address), phex (length, 0)); | |
1856 | t->to_flash_erase (t, address, length); | |
1857 | return; | |
1858 | } | |
a76d924d DJ |
1859 | |
1860 | tcomplain (); | |
1861 | } | |
1862 | ||
1863 | void | |
1864 | target_flash_done (void) | |
1865 | { | |
1866 | struct target_ops *t; | |
1867 | ||
1868 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1869 | if (t->to_flash_done != NULL) | |
5d502164 MS |
1870 | { |
1871 | if (targetdebug) | |
1872 | fprintf_unfiltered (gdb_stdlog, "target_flash_done\n"); | |
1873 | t->to_flash_done (t); | |
1874 | return; | |
1875 | } | |
a76d924d DJ |
1876 | |
1877 | tcomplain (); | |
1878 | } | |
1879 | ||
920d2a44 AC |
1880 | static void |
1881 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1882 | struct cmd_list_element *c, const char *value) | |
1883 | { | |
3e43a32a MS |
1884 | fprintf_filtered (file, |
1885 | _("Mode for reading from readonly sections is %s.\n"), | |
920d2a44 AC |
1886 | value); |
1887 | } | |
3a11626d | 1888 | |
1e3ff5ad AC |
1889 | /* More generic transfers. */ |
1890 | ||
9b409511 | 1891 | static enum target_xfer_status |
8aa91c1e | 1892 | default_xfer_partial (struct target_ops *ops, enum target_object object, |
2bc416ba | 1893 | const char *annex, gdb_byte *readbuf, |
9b409511 YQ |
1894 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, |
1895 | ULONGEST *xfered_len) | |
0088c768 AC |
1896 | { |
1897 | if (object == TARGET_OBJECT_MEMORY | |
c8e73a31 AC |
1898 | && ops->deprecated_xfer_memory != NULL) |
1899 | /* If available, fall back to the target's | |
1900 | "deprecated_xfer_memory" method. */ | |
0088c768 | 1901 | { |
4b8a223f | 1902 | int xfered = -1; |
5d502164 | 1903 | |
0088c768 | 1904 | errno = 0; |
4b8a223f AC |
1905 | if (writebuf != NULL) |
1906 | { | |
1907 | void *buffer = xmalloc (len); | |
1908 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |
5d502164 | 1909 | |
4b8a223f | 1910 | memcpy (buffer, writebuf, len); |
c8e73a31 AC |
1911 | xfered = ops->deprecated_xfer_memory (offset, buffer, len, |
1912 | 1/*write*/, NULL, ops); | |
4b8a223f AC |
1913 | do_cleanups (cleanup); |
1914 | } | |
1915 | if (readbuf != NULL) | |
244e85c8 MS |
1916 | xfered = ops->deprecated_xfer_memory (offset, readbuf, len, |
1917 | 0/*read*/, NULL, ops); | |
0088c768 | 1918 | if (xfered > 0) |
9b409511 YQ |
1919 | { |
1920 | *xfered_len = (ULONGEST) xfered; | |
1921 | return TARGET_XFER_E_IO; | |
1922 | } | |
0088c768 | 1923 | else if (xfered == 0 && errno == 0) |
c8e73a31 AC |
1924 | /* "deprecated_xfer_memory" uses 0, cross checked against |
1925 | ERRNO as one indication of an error. */ | |
9b409511 | 1926 | return TARGET_XFER_EOF; |
0088c768 | 1927 | else |
9b409511 | 1928 | return TARGET_XFER_E_IO; |
0088c768 | 1929 | } |
0088c768 | 1930 | else |
6b84065d TT |
1931 | { |
1932 | gdb_assert (ops->beneath != NULL); | |
1933 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, | |
1934 | readbuf, writebuf, offset, len, | |
1935 | xfered_len); | |
1936 | } | |
0088c768 AC |
1937 | } |
1938 | ||
7f79c47e | 1939 | /* Target vector read/write partial wrapper functions. */ |
0088c768 | 1940 | |
9b409511 | 1941 | static enum target_xfer_status |
1e3ff5ad AC |
1942 | target_read_partial (struct target_ops *ops, |
1943 | enum target_object object, | |
1b0ba102 | 1944 | const char *annex, gdb_byte *buf, |
9b409511 YQ |
1945 | ULONGEST offset, ULONGEST len, |
1946 | ULONGEST *xfered_len) | |
1e3ff5ad | 1947 | { |
9b409511 YQ |
1948 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len, |
1949 | xfered_len); | |
1e3ff5ad AC |
1950 | } |
1951 | ||
8a55ffb0 | 1952 | static enum target_xfer_status |
1e3ff5ad AC |
1953 | target_write_partial (struct target_ops *ops, |
1954 | enum target_object object, | |
1b0ba102 | 1955 | const char *annex, const gdb_byte *buf, |
9b409511 | 1956 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len) |
1e3ff5ad | 1957 | { |
9b409511 YQ |
1958 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len, |
1959 | xfered_len); | |
1e3ff5ad AC |
1960 | } |
1961 | ||
1962 | /* Wrappers to perform the full transfer. */ | |
7f79c47e DE |
1963 | |
1964 | /* For docs on target_read see target.h. */ | |
1965 | ||
1e3ff5ad AC |
1966 | LONGEST |
1967 | target_read (struct target_ops *ops, | |
1968 | enum target_object object, | |
1b0ba102 | 1969 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1970 | ULONGEST offset, LONGEST len) |
1971 | { | |
1972 | LONGEST xfered = 0; | |
5d502164 | 1973 | |
1e3ff5ad AC |
1974 | while (xfered < len) |
1975 | { | |
9b409511 YQ |
1976 | ULONGEST xfered_len; |
1977 | enum target_xfer_status status; | |
1978 | ||
1979 | status = target_read_partial (ops, object, annex, | |
1980 | (gdb_byte *) buf + xfered, | |
1981 | offset + xfered, len - xfered, | |
1982 | &xfered_len); | |
5d502164 | 1983 | |
1e3ff5ad | 1984 | /* Call an observer, notifying them of the xfer progress? */ |
9b409511 | 1985 | if (status == TARGET_XFER_EOF) |
13547ab6 | 1986 | return xfered; |
9b409511 YQ |
1987 | else if (status == TARGET_XFER_OK) |
1988 | { | |
1989 | xfered += xfered_len; | |
1990 | QUIT; | |
1991 | } | |
1992 | else | |
0088c768 | 1993 | return -1; |
9b409511 | 1994 | |
1e3ff5ad AC |
1995 | } |
1996 | return len; | |
1997 | } | |
1998 | ||
f1a507a1 JB |
1999 | /* Assuming that the entire [begin, end) range of memory cannot be |
2000 | read, try to read whatever subrange is possible to read. | |
2001 | ||
2002 | The function returns, in RESULT, either zero or one memory block. | |
2003 | If there's a readable subrange at the beginning, it is completely | |
2004 | read and returned. Any further readable subrange will not be read. | |
2005 | Otherwise, if there's a readable subrange at the end, it will be | |
2006 | completely read and returned. Any readable subranges before it | |
2007 | (obviously, not starting at the beginning), will be ignored. In | |
2008 | other cases -- either no readable subrange, or readable subrange(s) | |
2009 | that is neither at the beginning, or end, nothing is returned. | |
2010 | ||
2011 | The purpose of this function is to handle a read across a boundary | |
2012 | of accessible memory in a case when memory map is not available. | |
2013 | The above restrictions are fine for this case, but will give | |
2014 | incorrect results if the memory is 'patchy'. However, supporting | |
2015 | 'patchy' memory would require trying to read every single byte, | |
2016 | and it seems unacceptable solution. Explicit memory map is | |
2017 | recommended for this case -- and target_read_memory_robust will | |
2018 | take care of reading multiple ranges then. */ | |
8dedea02 VP |
2019 | |
2020 | static void | |
3e43a32a MS |
2021 | read_whatever_is_readable (struct target_ops *ops, |
2022 | ULONGEST begin, ULONGEST end, | |
8dedea02 | 2023 | VEC(memory_read_result_s) **result) |
d5086790 | 2024 | { |
f1a507a1 | 2025 | gdb_byte *buf = xmalloc (end - begin); |
8dedea02 VP |
2026 | ULONGEST current_begin = begin; |
2027 | ULONGEST current_end = end; | |
2028 | int forward; | |
2029 | memory_read_result_s r; | |
9b409511 | 2030 | ULONGEST xfered_len; |
8dedea02 VP |
2031 | |
2032 | /* If we previously failed to read 1 byte, nothing can be done here. */ | |
2033 | if (end - begin <= 1) | |
13b3fd9b MS |
2034 | { |
2035 | xfree (buf); | |
2036 | return; | |
2037 | } | |
8dedea02 VP |
2038 | |
2039 | /* Check that either first or the last byte is readable, and give up | |
c378eb4e | 2040 | if not. This heuristic is meant to permit reading accessible memory |
8dedea02 VP |
2041 | at the boundary of accessible region. */ |
2042 | if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 | 2043 | buf, begin, 1, &xfered_len) == TARGET_XFER_OK) |
8dedea02 VP |
2044 | { |
2045 | forward = 1; | |
2046 | ++current_begin; | |
2047 | } | |
2048 | else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 YQ |
2049 | buf + (end-begin) - 1, end - 1, 1, |
2050 | &xfered_len) == TARGET_XFER_OK) | |
8dedea02 VP |
2051 | { |
2052 | forward = 0; | |
2053 | --current_end; | |
2054 | } | |
2055 | else | |
2056 | { | |
13b3fd9b | 2057 | xfree (buf); |
8dedea02 VP |
2058 | return; |
2059 | } | |
2060 | ||
2061 | /* Loop invariant is that the [current_begin, current_end) was previously | |
2062 | found to be not readable as a whole. | |
2063 | ||
2064 | Note loop condition -- if the range has 1 byte, we can't divide the range | |
2065 | so there's no point trying further. */ | |
2066 | while (current_end - current_begin > 1) | |
2067 | { | |
2068 | ULONGEST first_half_begin, first_half_end; | |
2069 | ULONGEST second_half_begin, second_half_end; | |
2070 | LONGEST xfer; | |
8dedea02 | 2071 | ULONGEST middle = current_begin + (current_end - current_begin)/2; |
f1a507a1 | 2072 | |
8dedea02 VP |
2073 | if (forward) |
2074 | { | |
2075 | first_half_begin = current_begin; | |
2076 | first_half_end = middle; | |
2077 | second_half_begin = middle; | |
2078 | second_half_end = current_end; | |
2079 | } | |
2080 | else | |
2081 | { | |
2082 | first_half_begin = middle; | |
2083 | first_half_end = current_end; | |
2084 | second_half_begin = current_begin; | |
2085 | second_half_end = middle; | |
2086 | } | |
2087 | ||
2088 | xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2089 | buf + (first_half_begin - begin), | |
2090 | first_half_begin, | |
2091 | first_half_end - first_half_begin); | |
2092 | ||
2093 | if (xfer == first_half_end - first_half_begin) | |
2094 | { | |
c378eb4e | 2095 | /* This half reads up fine. So, the error must be in the |
3e43a32a | 2096 | other half. */ |
8dedea02 VP |
2097 | current_begin = second_half_begin; |
2098 | current_end = second_half_end; | |
2099 | } | |
2100 | else | |
2101 | { | |
c378eb4e MS |
2102 | /* This half is not readable. Because we've tried one byte, we |
2103 | know some part of this half if actually redable. Go to the next | |
8dedea02 VP |
2104 | iteration to divide again and try to read. |
2105 | ||
2106 | We don't handle the other half, because this function only tries | |
2107 | to read a single readable subrange. */ | |
2108 | current_begin = first_half_begin; | |
2109 | current_end = first_half_end; | |
2110 | } | |
2111 | } | |
2112 | ||
2113 | if (forward) | |
2114 | { | |
2115 | /* The [begin, current_begin) range has been read. */ | |
2116 | r.begin = begin; | |
2117 | r.end = current_begin; | |
2118 | r.data = buf; | |
2119 | } | |
2120 | else | |
2121 | { | |
2122 | /* The [current_end, end) range has been read. */ | |
2123 | LONGEST rlen = end - current_end; | |
f1a507a1 | 2124 | |
8dedea02 VP |
2125 | r.data = xmalloc (rlen); |
2126 | memcpy (r.data, buf + current_end - begin, rlen); | |
2127 | r.begin = current_end; | |
2128 | r.end = end; | |
2129 | xfree (buf); | |
2130 | } | |
2131 | VEC_safe_push(memory_read_result_s, (*result), &r); | |
2132 | } | |
2133 | ||
2134 | void | |
2135 | free_memory_read_result_vector (void *x) | |
2136 | { | |
2137 | VEC(memory_read_result_s) *v = x; | |
2138 | memory_read_result_s *current; | |
2139 | int ix; | |
2140 | ||
2141 | for (ix = 0; VEC_iterate (memory_read_result_s, v, ix, current); ++ix) | |
2142 | { | |
2143 | xfree (current->data); | |
2144 | } | |
2145 | VEC_free (memory_read_result_s, v); | |
2146 | } | |
2147 | ||
2148 | VEC(memory_read_result_s) * | |
2149 | read_memory_robust (struct target_ops *ops, ULONGEST offset, LONGEST len) | |
2150 | { | |
2151 | VEC(memory_read_result_s) *result = 0; | |
2152 | ||
2153 | LONGEST xfered = 0; | |
d5086790 VP |
2154 | while (xfered < len) |
2155 | { | |
8dedea02 VP |
2156 | struct mem_region *region = lookup_mem_region (offset + xfered); |
2157 | LONGEST rlen; | |
5d502164 | 2158 | |
8dedea02 VP |
2159 | /* If there is no explicit region, a fake one should be created. */ |
2160 | gdb_assert (region); | |
2161 | ||
2162 | if (region->hi == 0) | |
2163 | rlen = len - xfered; | |
2164 | else | |
2165 | rlen = region->hi - offset; | |
2166 | ||
2167 | if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO) | |
d5086790 | 2168 | { |
c378eb4e | 2169 | /* Cannot read this region. Note that we can end up here only |
8dedea02 VP |
2170 | if the region is explicitly marked inaccessible, or |
2171 | 'inaccessible-by-default' is in effect. */ | |
2172 | xfered += rlen; | |
2173 | } | |
2174 | else | |
2175 | { | |
2176 | LONGEST to_read = min (len - xfered, rlen); | |
2177 | gdb_byte *buffer = (gdb_byte *)xmalloc (to_read); | |
2178 | ||
2179 | LONGEST xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2180 | (gdb_byte *) buffer, | |
2181 | offset + xfered, to_read); | |
2182 | /* Call an observer, notifying them of the xfer progress? */ | |
d5086790 | 2183 | if (xfer <= 0) |
d5086790 | 2184 | { |
c378eb4e | 2185 | /* Got an error reading full chunk. See if maybe we can read |
8dedea02 VP |
2186 | some subrange. */ |
2187 | xfree (buffer); | |
3e43a32a MS |
2188 | read_whatever_is_readable (ops, offset + xfered, |
2189 | offset + xfered + to_read, &result); | |
8dedea02 | 2190 | xfered += to_read; |
d5086790 | 2191 | } |
8dedea02 VP |
2192 | else |
2193 | { | |
2194 | struct memory_read_result r; | |
2195 | r.data = buffer; | |
2196 | r.begin = offset + xfered; | |
2197 | r.end = r.begin + xfer; | |
2198 | VEC_safe_push (memory_read_result_s, result, &r); | |
2199 | xfered += xfer; | |
2200 | } | |
2201 | QUIT; | |
d5086790 | 2202 | } |
d5086790 | 2203 | } |
8dedea02 | 2204 | return result; |
d5086790 VP |
2205 | } |
2206 | ||
8dedea02 | 2207 | |
cf7a04e8 DJ |
2208 | /* An alternative to target_write with progress callbacks. */ |
2209 | ||
1e3ff5ad | 2210 | LONGEST |
cf7a04e8 DJ |
2211 | target_write_with_progress (struct target_ops *ops, |
2212 | enum target_object object, | |
2213 | const char *annex, const gdb_byte *buf, | |
2214 | ULONGEST offset, LONGEST len, | |
2215 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad AC |
2216 | { |
2217 | LONGEST xfered = 0; | |
a76d924d DJ |
2218 | |
2219 | /* Give the progress callback a chance to set up. */ | |
2220 | if (progress) | |
2221 | (*progress) (0, baton); | |
2222 | ||
1e3ff5ad AC |
2223 | while (xfered < len) |
2224 | { | |
9b409511 YQ |
2225 | ULONGEST xfered_len; |
2226 | enum target_xfer_status status; | |
2227 | ||
2228 | status = target_write_partial (ops, object, annex, | |
2229 | (gdb_byte *) buf + xfered, | |
2230 | offset + xfered, len - xfered, | |
2231 | &xfered_len); | |
cf7a04e8 | 2232 | |
9b409511 | 2233 | if (status == TARGET_XFER_EOF) |
13547ab6 | 2234 | return xfered; |
9b409511 | 2235 | if (TARGET_XFER_STATUS_ERROR_P (status)) |
0088c768 | 2236 | return -1; |
cf7a04e8 | 2237 | |
9b409511 | 2238 | gdb_assert (status == TARGET_XFER_OK); |
cf7a04e8 | 2239 | if (progress) |
9b409511 | 2240 | (*progress) (xfered_len, baton); |
cf7a04e8 | 2241 | |
9b409511 | 2242 | xfered += xfered_len; |
1e3ff5ad AC |
2243 | QUIT; |
2244 | } | |
2245 | return len; | |
2246 | } | |
2247 | ||
7f79c47e DE |
2248 | /* For docs on target_write see target.h. */ |
2249 | ||
cf7a04e8 DJ |
2250 | LONGEST |
2251 | target_write (struct target_ops *ops, | |
2252 | enum target_object object, | |
2253 | const char *annex, const gdb_byte *buf, | |
2254 | ULONGEST offset, LONGEST len) | |
2255 | { | |
2256 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
2257 | NULL, NULL); | |
2258 | } | |
2259 | ||
159f81f3 DJ |
2260 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
2261 | the size of the transferred data. PADDING additional bytes are | |
2262 | available in *BUF_P. This is a helper function for | |
2263 | target_read_alloc; see the declaration of that function for more | |
2264 | information. */ | |
13547ab6 | 2265 | |
159f81f3 DJ |
2266 | static LONGEST |
2267 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, | |
2268 | const char *annex, gdb_byte **buf_p, int padding) | |
13547ab6 DJ |
2269 | { |
2270 | size_t buf_alloc, buf_pos; | |
2271 | gdb_byte *buf; | |
13547ab6 DJ |
2272 | |
2273 | /* This function does not have a length parameter; it reads the | |
2274 | entire OBJECT). Also, it doesn't support objects fetched partly | |
2275 | from one target and partly from another (in a different stratum, | |
2276 | e.g. a core file and an executable). Both reasons make it | |
2277 | unsuitable for reading memory. */ | |
2278 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
2279 | ||
2280 | /* Start by reading up to 4K at a time. The target will throttle | |
2281 | this number down if necessary. */ | |
2282 | buf_alloc = 4096; | |
2283 | buf = xmalloc (buf_alloc); | |
2284 | buf_pos = 0; | |
2285 | while (1) | |
2286 | { | |
9b409511 YQ |
2287 | ULONGEST xfered_len; |
2288 | enum target_xfer_status status; | |
2289 | ||
2290 | status = target_read_partial (ops, object, annex, &buf[buf_pos], | |
2291 | buf_pos, buf_alloc - buf_pos - padding, | |
2292 | &xfered_len); | |
2293 | ||
2294 | if (status == TARGET_XFER_EOF) | |
13547ab6 DJ |
2295 | { |
2296 | /* Read all there was. */ | |
2297 | if (buf_pos == 0) | |
2298 | xfree (buf); | |
2299 | else | |
2300 | *buf_p = buf; | |
2301 | return buf_pos; | |
2302 | } | |
9b409511 YQ |
2303 | else if (status != TARGET_XFER_OK) |
2304 | { | |
2305 | /* An error occurred. */ | |
2306 | xfree (buf); | |
2307 | return TARGET_XFER_E_IO; | |
2308 | } | |
13547ab6 | 2309 | |
9b409511 | 2310 | buf_pos += xfered_len; |
13547ab6 DJ |
2311 | |
2312 | /* If the buffer is filling up, expand it. */ | |
2313 | if (buf_alloc < buf_pos * 2) | |
2314 | { | |
2315 | buf_alloc *= 2; | |
2316 | buf = xrealloc (buf, buf_alloc); | |
2317 | } | |
2318 | ||
2319 | QUIT; | |
2320 | } | |
2321 | } | |
2322 | ||
159f81f3 DJ |
2323 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
2324 | the size of the transferred data. See the declaration in "target.h" | |
2325 | function for more information about the return value. */ | |
2326 | ||
2327 | LONGEST | |
2328 | target_read_alloc (struct target_ops *ops, enum target_object object, | |
2329 | const char *annex, gdb_byte **buf_p) | |
2330 | { | |
2331 | return target_read_alloc_1 (ops, object, annex, buf_p, 0); | |
2332 | } | |
2333 | ||
2334 | /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and | |
2335 | returned as a string, allocated using xmalloc. If an error occurs | |
2336 | or the transfer is unsupported, NULL is returned. Empty objects | |
2337 | are returned as allocated but empty strings. A warning is issued | |
2338 | if the result contains any embedded NUL bytes. */ | |
2339 | ||
2340 | char * | |
2341 | target_read_stralloc (struct target_ops *ops, enum target_object object, | |
2342 | const char *annex) | |
2343 | { | |
39086a0e PA |
2344 | gdb_byte *buffer; |
2345 | char *bufstr; | |
7313baad | 2346 | LONGEST i, transferred; |
159f81f3 | 2347 | |
39086a0e PA |
2348 | transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1); |
2349 | bufstr = (char *) buffer; | |
159f81f3 DJ |
2350 | |
2351 | if (transferred < 0) | |
2352 | return NULL; | |
2353 | ||
2354 | if (transferred == 0) | |
2355 | return xstrdup (""); | |
2356 | ||
39086a0e | 2357 | bufstr[transferred] = 0; |
7313baad UW |
2358 | |
2359 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
39086a0e PA |
2360 | for (i = strlen (bufstr); i < transferred; i++) |
2361 | if (bufstr[i] != 0) | |
7313baad UW |
2362 | { |
2363 | warning (_("target object %d, annex %s, " | |
2364 | "contained unexpected null characters"), | |
2365 | (int) object, annex ? annex : "(none)"); | |
2366 | break; | |
2367 | } | |
159f81f3 | 2368 | |
39086a0e | 2369 | return bufstr; |
159f81f3 DJ |
2370 | } |
2371 | ||
b6591e8b AC |
2372 | /* Memory transfer methods. */ |
2373 | ||
2374 | void | |
1b0ba102 | 2375 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
2376 | LONGEST len) |
2377 | { | |
07b82ea5 PA |
2378 | /* This method is used to read from an alternate, non-current |
2379 | target. This read must bypass the overlay support (as symbols | |
2380 | don't match this target), and GDB's internal cache (wrong cache | |
2381 | for this target). */ | |
2382 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) | |
b6591e8b | 2383 | != len) |
578d3588 | 2384 | memory_error (TARGET_XFER_E_IO, addr); |
b6591e8b AC |
2385 | } |
2386 | ||
2387 | ULONGEST | |
5d502164 MS |
2388 | get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr, |
2389 | int len, enum bfd_endian byte_order) | |
b6591e8b | 2390 | { |
f6519ebc | 2391 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
2392 | |
2393 | gdb_assert (len <= sizeof (buf)); | |
2394 | get_target_memory (ops, addr, buf, len); | |
e17a4113 | 2395 | return extract_unsigned_integer (buf, len, byte_order); |
b6591e8b AC |
2396 | } |
2397 | ||
3db08215 MM |
2398 | /* See target.h. */ |
2399 | ||
d914c394 SS |
2400 | int |
2401 | target_insert_breakpoint (struct gdbarch *gdbarch, | |
2402 | struct bp_target_info *bp_tgt) | |
2403 | { | |
2404 | if (!may_insert_breakpoints) | |
2405 | { | |
2406 | warning (_("May not insert breakpoints")); | |
2407 | return 1; | |
2408 | } | |
2409 | ||
6b84065d TT |
2410 | return current_target.to_insert_breakpoint (¤t_target, |
2411 | gdbarch, bp_tgt); | |
d914c394 SS |
2412 | } |
2413 | ||
3db08215 MM |
2414 | /* See target.h. */ |
2415 | ||
d914c394 | 2416 | int |
6b84065d TT |
2417 | target_remove_breakpoint (struct gdbarch *gdbarch, |
2418 | struct bp_target_info *bp_tgt) | |
d914c394 SS |
2419 | { |
2420 | /* This is kind of a weird case to handle, but the permission might | |
2421 | have been changed after breakpoints were inserted - in which case | |
2422 | we should just take the user literally and assume that any | |
2423 | breakpoints should be left in place. */ | |
2424 | if (!may_insert_breakpoints) | |
2425 | { | |
2426 | warning (_("May not remove breakpoints")); | |
2427 | return 1; | |
2428 | } | |
2429 | ||
6b84065d TT |
2430 | return current_target.to_remove_breakpoint (¤t_target, |
2431 | gdbarch, bp_tgt); | |
d914c394 SS |
2432 | } |
2433 | ||
c906108c | 2434 | static void |
fba45db2 | 2435 | target_info (char *args, int from_tty) |
c906108c SS |
2436 | { |
2437 | struct target_ops *t; | |
c906108c | 2438 | int has_all_mem = 0; |
c5aa993b | 2439 | |
c906108c | 2440 | if (symfile_objfile != NULL) |
4262abfb JK |
2441 | printf_unfiltered (_("Symbols from \"%s\".\n"), |
2442 | objfile_name (symfile_objfile)); | |
c906108c | 2443 | |
258b763a | 2444 | for (t = target_stack; t != NULL; t = t->beneath) |
c906108c | 2445 | { |
c35b1492 | 2446 | if (!(*t->to_has_memory) (t)) |
c906108c SS |
2447 | continue; |
2448 | ||
c5aa993b | 2449 | if ((int) (t->to_stratum) <= (int) dummy_stratum) |
c906108c SS |
2450 | continue; |
2451 | if (has_all_mem) | |
3e43a32a MS |
2452 | printf_unfiltered (_("\tWhile running this, " |
2453 | "GDB does not access memory from...\n")); | |
c5aa993b JM |
2454 | printf_unfiltered ("%s:\n", t->to_longname); |
2455 | (t->to_files_info) (t); | |
c35b1492 | 2456 | has_all_mem = (*t->to_has_all_memory) (t); |
c906108c SS |
2457 | } |
2458 | } | |
2459 | ||
fd79ecee DJ |
2460 | /* This function is called before any new inferior is created, e.g. |
2461 | by running a program, attaching, or connecting to a target. | |
2462 | It cleans up any state from previous invocations which might | |
2463 | change between runs. This is a subset of what target_preopen | |
2464 | resets (things which might change between targets). */ | |
2465 | ||
2466 | void | |
2467 | target_pre_inferior (int from_tty) | |
2468 | { | |
c378eb4e | 2469 | /* Clear out solib state. Otherwise the solib state of the previous |
b9db4ced | 2470 | inferior might have survived and is entirely wrong for the new |
c378eb4e | 2471 | target. This has been observed on GNU/Linux using glibc 2.3. How |
b9db4ced UW |
2472 | to reproduce: |
2473 | ||
2474 | bash$ ./foo& | |
2475 | [1] 4711 | |
2476 | bash$ ./foo& | |
2477 | [1] 4712 | |
2478 | bash$ gdb ./foo | |
2479 | [...] | |
2480 | (gdb) attach 4711 | |
2481 | (gdb) detach | |
2482 | (gdb) attach 4712 | |
2483 | Cannot access memory at address 0xdeadbeef | |
2484 | */ | |
b9db4ced | 2485 | |
50c71eaf PA |
2486 | /* In some OSs, the shared library list is the same/global/shared |
2487 | across inferiors. If code is shared between processes, so are | |
2488 | memory regions and features. */ | |
f5656ead | 2489 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
50c71eaf PA |
2490 | { |
2491 | no_shared_libraries (NULL, from_tty); | |
2492 | ||
2493 | invalidate_target_mem_regions (); | |
424163ea | 2494 | |
50c71eaf PA |
2495 | target_clear_description (); |
2496 | } | |
8ffcbaaf YQ |
2497 | |
2498 | agent_capability_invalidate (); | |
fd79ecee DJ |
2499 | } |
2500 | ||
b8fa0bfa PA |
2501 | /* Callback for iterate_over_inferiors. Gets rid of the given |
2502 | inferior. */ | |
2503 | ||
2504 | static int | |
2505 | dispose_inferior (struct inferior *inf, void *args) | |
2506 | { | |
2507 | struct thread_info *thread; | |
2508 | ||
2509 | thread = any_thread_of_process (inf->pid); | |
2510 | if (thread) | |
2511 | { | |
2512 | switch_to_thread (thread->ptid); | |
2513 | ||
2514 | /* Core inferiors actually should be detached, not killed. */ | |
2515 | if (target_has_execution) | |
2516 | target_kill (); | |
2517 | else | |
2518 | target_detach (NULL, 0); | |
2519 | } | |
2520 | ||
2521 | return 0; | |
2522 | } | |
2523 | ||
c906108c SS |
2524 | /* This is to be called by the open routine before it does |
2525 | anything. */ | |
2526 | ||
2527 | void | |
fba45db2 | 2528 | target_preopen (int from_tty) |
c906108c | 2529 | { |
c5aa993b | 2530 | dont_repeat (); |
c906108c | 2531 | |
b8fa0bfa | 2532 | if (have_inferiors ()) |
c5aa993b | 2533 | { |
adf40b2e | 2534 | if (!from_tty |
b8fa0bfa PA |
2535 | || !have_live_inferiors () |
2536 | || query (_("A program is being debugged already. Kill it? "))) | |
2537 | iterate_over_inferiors (dispose_inferior, NULL); | |
c906108c | 2538 | else |
8a3fe4f8 | 2539 | error (_("Program not killed.")); |
c906108c SS |
2540 | } |
2541 | ||
2542 | /* Calling target_kill may remove the target from the stack. But if | |
2543 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
2544 | /* Leave the exec target, though. The user may be switching from a |
2545 | live process to a core of the same program. */ | |
460014f5 | 2546 | pop_all_targets_above (file_stratum); |
fd79ecee DJ |
2547 | |
2548 | target_pre_inferior (from_tty); | |
c906108c SS |
2549 | } |
2550 | ||
2551 | /* Detach a target after doing deferred register stores. */ | |
2552 | ||
2553 | void | |
52554a0e | 2554 | target_detach (const char *args, int from_tty) |
c906108c | 2555 | { |
136d6dae VP |
2556 | struct target_ops* t; |
2557 | ||
f5656ead | 2558 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
2559 | /* Don't remove global breakpoints here. They're removed on |
2560 | disconnection from the target. */ | |
2561 | ; | |
2562 | else | |
2563 | /* If we're in breakpoints-always-inserted mode, have to remove | |
2564 | them before detaching. */ | |
dfd4cc63 | 2565 | remove_breakpoints_pid (ptid_get_pid (inferior_ptid)); |
74960c60 | 2566 | |
24291992 PA |
2567 | prepare_for_detach (); |
2568 | ||
09da0d0a TT |
2569 | current_target.to_detach (¤t_target, args, from_tty); |
2570 | if (targetdebug) | |
2571 | fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n", | |
2572 | args, from_tty); | |
c906108c SS |
2573 | } |
2574 | ||
6ad8ae5c DJ |
2575 | void |
2576 | target_disconnect (char *args, int from_tty) | |
2577 | { | |
597320e7 DJ |
2578 | struct target_ops *t; |
2579 | ||
50c71eaf PA |
2580 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
2581 | are global across processes, we have to remove them before | |
2582 | disconnecting. */ | |
74960c60 VP |
2583 | remove_breakpoints (); |
2584 | ||
597320e7 DJ |
2585 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2586 | if (t->to_disconnect != NULL) | |
2587 | { | |
2588 | if (targetdebug) | |
2589 | fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n", | |
2590 | args, from_tty); | |
2591 | t->to_disconnect (t, args, from_tty); | |
2592 | return; | |
2593 | } | |
2594 | ||
2595 | tcomplain (); | |
6ad8ae5c DJ |
2596 | } |
2597 | ||
117de6a9 | 2598 | ptid_t |
47608cb1 | 2599 | target_wait (ptid_t ptid, struct target_waitstatus *status, int options) |
117de6a9 PA |
2600 | { |
2601 | struct target_ops *t; | |
6b84065d TT |
2602 | ptid_t retval = (current_target.to_wait) (¤t_target, ptid, |
2603 | status, options); | |
117de6a9 | 2604 | |
6b84065d | 2605 | if (targetdebug) |
117de6a9 | 2606 | { |
6b84065d TT |
2607 | char *status_string; |
2608 | char *options_string; | |
117de6a9 | 2609 | |
6b84065d TT |
2610 | status_string = target_waitstatus_to_string (status); |
2611 | options_string = target_options_to_string (options); | |
2612 | fprintf_unfiltered (gdb_stdlog, | |
2613 | "target_wait (%d, status, options={%s})" | |
2614 | " = %d, %s\n", | |
2615 | ptid_get_pid (ptid), options_string, | |
2616 | ptid_get_pid (retval), status_string); | |
2617 | xfree (status_string); | |
2618 | xfree (options_string); | |
117de6a9 PA |
2619 | } |
2620 | ||
6b84065d | 2621 | return retval; |
117de6a9 PA |
2622 | } |
2623 | ||
2624 | char * | |
2625 | target_pid_to_str (ptid_t ptid) | |
2626 | { | |
2627 | struct target_ops *t; | |
2628 | ||
2629 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2630 | { | |
2631 | if (t->to_pid_to_str != NULL) | |
2632 | return (*t->to_pid_to_str) (t, ptid); | |
2633 | } | |
2634 | ||
2635 | return normal_pid_to_str (ptid); | |
2636 | } | |
2637 | ||
4694da01 TT |
2638 | char * |
2639 | target_thread_name (struct thread_info *info) | |
2640 | { | |
825828fc | 2641 | return current_target.to_thread_name (¤t_target, info); |
4694da01 TT |
2642 | } |
2643 | ||
e1ac3328 | 2644 | void |
2ea28649 | 2645 | target_resume (ptid_t ptid, int step, enum gdb_signal signal) |
e1ac3328 | 2646 | { |
28439f5e PA |
2647 | struct target_ops *t; |
2648 | ||
4e5d721f | 2649 | target_dcache_invalidate (); |
28439f5e | 2650 | |
6b84065d TT |
2651 | current_target.to_resume (¤t_target, ptid, step, signal); |
2652 | if (targetdebug) | |
2653 | fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n", | |
2654 | ptid_get_pid (ptid), | |
2655 | step ? "step" : "continue", | |
2656 | gdb_signal_to_name (signal)); | |
28439f5e | 2657 | |
6b84065d TT |
2658 | registers_changed_ptid (ptid); |
2659 | set_executing (ptid, 1); | |
2660 | set_running (ptid, 1); | |
2661 | clear_inline_frame_state (ptid); | |
e1ac3328 | 2662 | } |
2455069d UW |
2663 | |
2664 | void | |
2665 | target_pass_signals (int numsigs, unsigned char *pass_signals) | |
2666 | { | |
2667 | struct target_ops *t; | |
2668 | ||
2669 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2670 | { | |
2671 | if (t->to_pass_signals != NULL) | |
2672 | { | |
2673 | if (targetdebug) | |
2674 | { | |
2675 | int i; | |
2676 | ||
2677 | fprintf_unfiltered (gdb_stdlog, "target_pass_signals (%d, {", | |
2678 | numsigs); | |
2679 | ||
2680 | for (i = 0; i < numsigs; i++) | |
2681 | if (pass_signals[i]) | |
2682 | fprintf_unfiltered (gdb_stdlog, " %s", | |
2ea28649 | 2683 | gdb_signal_to_name (i)); |
2455069d UW |
2684 | |
2685 | fprintf_unfiltered (gdb_stdlog, " })\n"); | |
2686 | } | |
2687 | ||
94bedb42 | 2688 | (*t->to_pass_signals) (t, numsigs, pass_signals); |
2455069d UW |
2689 | return; |
2690 | } | |
2691 | } | |
2692 | } | |
2693 | ||
9b224c5e PA |
2694 | void |
2695 | target_program_signals (int numsigs, unsigned char *program_signals) | |
2696 | { | |
2697 | struct target_ops *t; | |
2698 | ||
2699 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2700 | { | |
2701 | if (t->to_program_signals != NULL) | |
2702 | { | |
2703 | if (targetdebug) | |
2704 | { | |
2705 | int i; | |
2706 | ||
2707 | fprintf_unfiltered (gdb_stdlog, "target_program_signals (%d, {", | |
2708 | numsigs); | |
2709 | ||
2710 | for (i = 0; i < numsigs; i++) | |
2711 | if (program_signals[i]) | |
2712 | fprintf_unfiltered (gdb_stdlog, " %s", | |
2ea28649 | 2713 | gdb_signal_to_name (i)); |
9b224c5e PA |
2714 | |
2715 | fprintf_unfiltered (gdb_stdlog, " })\n"); | |
2716 | } | |
2717 | ||
daf5e9b6 | 2718 | (*t->to_program_signals) (t, numsigs, program_signals); |
9b224c5e PA |
2719 | return; |
2720 | } | |
2721 | } | |
2722 | } | |
2723 | ||
ee057212 DJ |
2724 | /* Look through the list of possible targets for a target that can |
2725 | follow forks. */ | |
2726 | ||
2727 | int | |
07107ca6 | 2728 | target_follow_fork (int follow_child, int detach_fork) |
ee057212 DJ |
2729 | { |
2730 | struct target_ops *t; | |
2731 | ||
2732 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2733 | { | |
2734 | if (t->to_follow_fork != NULL) | |
2735 | { | |
07107ca6 | 2736 | int retval = t->to_follow_fork (t, follow_child, detach_fork); |
5d502164 | 2737 | |
ee057212 | 2738 | if (targetdebug) |
07107ca6 LM |
2739 | fprintf_unfiltered (gdb_stdlog, |
2740 | "target_follow_fork (%d, %d) = %d\n", | |
2741 | follow_child, detach_fork, retval); | |
ee057212 DJ |
2742 | return retval; |
2743 | } | |
2744 | } | |
2745 | ||
2746 | /* Some target returned a fork event, but did not know how to follow it. */ | |
2747 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 2748 | _("could not find a target to follow fork")); |
ee057212 DJ |
2749 | } |
2750 | ||
136d6dae VP |
2751 | void |
2752 | target_mourn_inferior (void) | |
2753 | { | |
2754 | struct target_ops *t; | |
5d502164 | 2755 | |
136d6dae VP |
2756 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2757 | { | |
2758 | if (t->to_mourn_inferior != NULL) | |
2759 | { | |
2760 | t->to_mourn_inferior (t); | |
947b8855 PA |
2761 | if (targetdebug) |
2762 | fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n"); | |
efbd6e75 JB |
2763 | |
2764 | /* We no longer need to keep handles on any of the object files. | |
2765 | Make sure to release them to avoid unnecessarily locking any | |
2766 | of them while we're not actually debugging. */ | |
2767 | bfd_cache_close_all (); | |
2768 | ||
136d6dae VP |
2769 | return; |
2770 | } | |
2771 | } | |
2772 | ||
2773 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 2774 | _("could not find a target to follow mourn inferior")); |
136d6dae VP |
2775 | } |
2776 | ||
424163ea DJ |
2777 | /* Look for a target which can describe architectural features, starting |
2778 | from TARGET. If we find one, return its description. */ | |
2779 | ||
2780 | const struct target_desc * | |
2781 | target_read_description (struct target_ops *target) | |
2782 | { | |
2783 | struct target_ops *t; | |
2784 | ||
2785 | for (t = target; t != NULL; t = t->beneath) | |
2786 | if (t->to_read_description != NULL) | |
2787 | { | |
2788 | const struct target_desc *tdesc; | |
2789 | ||
2790 | tdesc = t->to_read_description (t); | |
2791 | if (tdesc) | |
2792 | return tdesc; | |
2793 | } | |
2794 | ||
2795 | return NULL; | |
2796 | } | |
2797 | ||
08388c79 DE |
2798 | /* The default implementation of to_search_memory. |
2799 | This implements a basic search of memory, reading target memory and | |
2800 | performing the search here (as opposed to performing the search in on the | |
2801 | target side with, for example, gdbserver). */ | |
2802 | ||
2803 | int | |
2804 | simple_search_memory (struct target_ops *ops, | |
2805 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2806 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2807 | CORE_ADDR *found_addrp) | |
2808 | { | |
2809 | /* NOTE: also defined in find.c testcase. */ | |
2810 | #define SEARCH_CHUNK_SIZE 16000 | |
2811 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
2812 | /* Buffer to hold memory contents for searching. */ | |
2813 | gdb_byte *search_buf; | |
2814 | unsigned search_buf_size; | |
2815 | struct cleanup *old_cleanups; | |
2816 | ||
2817 | search_buf_size = chunk_size + pattern_len - 1; | |
2818 | ||
2819 | /* No point in trying to allocate a buffer larger than the search space. */ | |
2820 | if (search_space_len < search_buf_size) | |
2821 | search_buf_size = search_space_len; | |
2822 | ||
2823 | search_buf = malloc (search_buf_size); | |
2824 | if (search_buf == NULL) | |
5e1471f5 | 2825 | error (_("Unable to allocate memory to perform the search.")); |
08388c79 DE |
2826 | old_cleanups = make_cleanup (free_current_contents, &search_buf); |
2827 | ||
2828 | /* Prime the search buffer. */ | |
2829 | ||
2830 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2831 | search_buf, start_addr, search_buf_size) != search_buf_size) | |
2832 | { | |
b3dc46ff AB |
2833 | warning (_("Unable to access %s bytes of target " |
2834 | "memory at %s, halting search."), | |
2835 | pulongest (search_buf_size), hex_string (start_addr)); | |
08388c79 DE |
2836 | do_cleanups (old_cleanups); |
2837 | return -1; | |
2838 | } | |
2839 | ||
2840 | /* Perform the search. | |
2841 | ||
2842 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
2843 | When we've scanned N bytes we copy the trailing bytes to the start and | |
2844 | read in another N bytes. */ | |
2845 | ||
2846 | while (search_space_len >= pattern_len) | |
2847 | { | |
2848 | gdb_byte *found_ptr; | |
2849 | unsigned nr_search_bytes = min (search_space_len, search_buf_size); | |
2850 | ||
2851 | found_ptr = memmem (search_buf, nr_search_bytes, | |
2852 | pattern, pattern_len); | |
2853 | ||
2854 | if (found_ptr != NULL) | |
2855 | { | |
2856 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
5d502164 | 2857 | |
08388c79 DE |
2858 | *found_addrp = found_addr; |
2859 | do_cleanups (old_cleanups); | |
2860 | return 1; | |
2861 | } | |
2862 | ||
2863 | /* Not found in this chunk, skip to next chunk. */ | |
2864 | ||
2865 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
2866 | if (search_space_len >= chunk_size) | |
2867 | search_space_len -= chunk_size; | |
2868 | else | |
2869 | search_space_len = 0; | |
2870 | ||
2871 | if (search_space_len >= pattern_len) | |
2872 | { | |
2873 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 2874 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
2875 | int nr_to_read; |
2876 | ||
2877 | /* Copy the trailing part of the previous iteration to the front | |
2878 | of the buffer for the next iteration. */ | |
2879 | gdb_assert (keep_len == pattern_len - 1); | |
2880 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
2881 | ||
2882 | nr_to_read = min (search_space_len - keep_len, chunk_size); | |
2883 | ||
2884 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2885 | search_buf + keep_len, read_addr, | |
2886 | nr_to_read) != nr_to_read) | |
2887 | { | |
b3dc46ff | 2888 | warning (_("Unable to access %s bytes of target " |
9b20d036 | 2889 | "memory at %s, halting search."), |
b3dc46ff | 2890 | plongest (nr_to_read), |
08388c79 DE |
2891 | hex_string (read_addr)); |
2892 | do_cleanups (old_cleanups); | |
2893 | return -1; | |
2894 | } | |
2895 | ||
2896 | start_addr += chunk_size; | |
2897 | } | |
2898 | } | |
2899 | ||
2900 | /* Not found. */ | |
2901 | ||
2902 | do_cleanups (old_cleanups); | |
2903 | return 0; | |
2904 | } | |
2905 | ||
2906 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the | |
2907 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2908 | ||
2909 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2910 | requiring halting of the search (e.g. memory read error). | |
2911 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2912 | ||
2913 | int | |
2914 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2915 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2916 | CORE_ADDR *found_addrp) | |
2917 | { | |
2918 | struct target_ops *t; | |
2919 | int found; | |
2920 | ||
2921 | /* We don't use INHERIT to set current_target.to_search_memory, | |
2922 | so we have to scan the target stack and handle targetdebug | |
2923 | ourselves. */ | |
2924 | ||
2925 | if (targetdebug) | |
2926 | fprintf_unfiltered (gdb_stdlog, "target_search_memory (%s, ...)\n", | |
2927 | hex_string (start_addr)); | |
2928 | ||
2929 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2930 | if (t->to_search_memory != NULL) | |
2931 | break; | |
2932 | ||
2933 | if (t != NULL) | |
2934 | { | |
2935 | found = t->to_search_memory (t, start_addr, search_space_len, | |
2936 | pattern, pattern_len, found_addrp); | |
2937 | } | |
2938 | else | |
2939 | { | |
2940 | /* If a special version of to_search_memory isn't available, use the | |
2941 | simple version. */ | |
c35b1492 | 2942 | found = simple_search_memory (current_target.beneath, |
08388c79 DE |
2943 | start_addr, search_space_len, |
2944 | pattern, pattern_len, found_addrp); | |
2945 | } | |
2946 | ||
2947 | if (targetdebug) | |
2948 | fprintf_unfiltered (gdb_stdlog, " = %d\n", found); | |
2949 | ||
2950 | return found; | |
2951 | } | |
2952 | ||
8edfe269 DJ |
2953 | /* Look through the currently pushed targets. If none of them will |
2954 | be able to restart the currently running process, issue an error | |
2955 | message. */ | |
2956 | ||
2957 | void | |
2958 | target_require_runnable (void) | |
2959 | { | |
2960 | struct target_ops *t; | |
2961 | ||
2962 | for (t = target_stack; t != NULL; t = t->beneath) | |
2963 | { | |
2964 | /* If this target knows how to create a new program, then | |
2965 | assume we will still be able to after killing the current | |
2966 | one. Either killing and mourning will not pop T, or else | |
2967 | find_default_run_target will find it again. */ | |
2968 | if (t->to_create_inferior != NULL) | |
2969 | return; | |
2970 | ||
2971 | /* Do not worry about thread_stratum targets that can not | |
2972 | create inferiors. Assume they will be pushed again if | |
2973 | necessary, and continue to the process_stratum. */ | |
85e747d2 UW |
2974 | if (t->to_stratum == thread_stratum |
2975 | || t->to_stratum == arch_stratum) | |
8edfe269 DJ |
2976 | continue; |
2977 | ||
3e43a32a MS |
2978 | error (_("The \"%s\" target does not support \"run\". " |
2979 | "Try \"help target\" or \"continue\"."), | |
8edfe269 DJ |
2980 | t->to_shortname); |
2981 | } | |
2982 | ||
2983 | /* This function is only called if the target is running. In that | |
2984 | case there should have been a process_stratum target and it | |
c378eb4e | 2985 | should either know how to create inferiors, or not... */ |
9b20d036 | 2986 | internal_error (__FILE__, __LINE__, _("No targets found")); |
8edfe269 DJ |
2987 | } |
2988 | ||
c906108c SS |
2989 | /* Look through the list of possible targets for a target that can |
2990 | execute a run or attach command without any other data. This is | |
2991 | used to locate the default process stratum. | |
2992 | ||
5f667f2d PA |
2993 | If DO_MESG is not NULL, the result is always valid (error() is |
2994 | called for errors); else, return NULL on error. */ | |
c906108c SS |
2995 | |
2996 | static struct target_ops * | |
fba45db2 | 2997 | find_default_run_target (char *do_mesg) |
c906108c SS |
2998 | { |
2999 | struct target_ops **t; | |
3000 | struct target_ops *runable = NULL; | |
3001 | int count; | |
3002 | ||
3003 | count = 0; | |
3004 | ||
3005 | for (t = target_structs; t < target_structs + target_struct_size; | |
3006 | ++t) | |
3007 | { | |
c5aa993b | 3008 | if ((*t)->to_can_run && target_can_run (*t)) |
c906108c SS |
3009 | { |
3010 | runable = *t; | |
3011 | ++count; | |
3012 | } | |
3013 | } | |
3014 | ||
3015 | if (count != 1) | |
5f667f2d PA |
3016 | { |
3017 | if (do_mesg) | |
3018 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
3019 | else | |
3020 | return NULL; | |
3021 | } | |
c906108c SS |
3022 | |
3023 | return runable; | |
3024 | } | |
3025 | ||
3026 | void | |
136d6dae | 3027 | find_default_attach (struct target_ops *ops, char *args, int from_tty) |
c906108c SS |
3028 | { |
3029 | struct target_ops *t; | |
3030 | ||
c5aa993b | 3031 | t = find_default_run_target ("attach"); |
136d6dae | 3032 | (t->to_attach) (t, args, from_tty); |
c906108c SS |
3033 | return; |
3034 | } | |
3035 | ||
c906108c | 3036 | void |
136d6dae VP |
3037 | find_default_create_inferior (struct target_ops *ops, |
3038 | char *exec_file, char *allargs, char **env, | |
c27cda74 | 3039 | int from_tty) |
c906108c SS |
3040 | { |
3041 | struct target_ops *t; | |
3042 | ||
c5aa993b | 3043 | t = find_default_run_target ("run"); |
136d6dae | 3044 | (t->to_create_inferior) (t, exec_file, allargs, env, from_tty); |
c906108c SS |
3045 | return; |
3046 | } | |
3047 | ||
2c0b251b | 3048 | static int |
6a109b6b | 3049 | find_default_can_async_p (struct target_ops *ignore) |
b84876c2 PA |
3050 | { |
3051 | struct target_ops *t; | |
3052 | ||
5f667f2d PA |
3053 | /* This may be called before the target is pushed on the stack; |
3054 | look for the default process stratum. If there's none, gdb isn't | |
3055 | configured with a native debugger, and target remote isn't | |
3056 | connected yet. */ | |
3057 | t = find_default_run_target (NULL); | |
6b84065d | 3058 | if (t && t->to_can_async_p != delegate_can_async_p) |
6a109b6b | 3059 | return (t->to_can_async_p) (t); |
b84876c2 PA |
3060 | return 0; |
3061 | } | |
3062 | ||
2c0b251b | 3063 | static int |
6a109b6b | 3064 | find_default_is_async_p (struct target_ops *ignore) |
b84876c2 PA |
3065 | { |
3066 | struct target_ops *t; | |
3067 | ||
5f667f2d PA |
3068 | /* This may be called before the target is pushed on the stack; |
3069 | look for the default process stratum. If there's none, gdb isn't | |
3070 | configured with a native debugger, and target remote isn't | |
3071 | connected yet. */ | |
3072 | t = find_default_run_target (NULL); | |
6b84065d | 3073 | if (t && t->to_is_async_p != delegate_is_async_p) |
6a109b6b | 3074 | return (t->to_is_async_p) (t); |
b84876c2 PA |
3075 | return 0; |
3076 | } | |
3077 | ||
2c0b251b | 3078 | static int |
2a9a2795 | 3079 | find_default_supports_non_stop (struct target_ops *self) |
9908b566 VP |
3080 | { |
3081 | struct target_ops *t; | |
3082 | ||
3083 | t = find_default_run_target (NULL); | |
3084 | if (t && t->to_supports_non_stop) | |
2a9a2795 | 3085 | return (t->to_supports_non_stop) (t); |
9908b566 VP |
3086 | return 0; |
3087 | } | |
3088 | ||
3089 | int | |
2c0b251b | 3090 | target_supports_non_stop (void) |
9908b566 VP |
3091 | { |
3092 | struct target_ops *t; | |
5d502164 | 3093 | |
9908b566 VP |
3094 | for (t = ¤t_target; t != NULL; t = t->beneath) |
3095 | if (t->to_supports_non_stop) | |
2a9a2795 | 3096 | return t->to_supports_non_stop (t); |
9908b566 VP |
3097 | |
3098 | return 0; | |
3099 | } | |
3100 | ||
145b16a9 UW |
3101 | /* Implement the "info proc" command. */ |
3102 | ||
451b7c33 | 3103 | int |
145b16a9 UW |
3104 | target_info_proc (char *args, enum info_proc_what what) |
3105 | { | |
3106 | struct target_ops *t; | |
3107 | ||
3108 | /* If we're already connected to something that can get us OS | |
3109 | related data, use it. Otherwise, try using the native | |
3110 | target. */ | |
3111 | if (current_target.to_stratum >= process_stratum) | |
3112 | t = current_target.beneath; | |
3113 | else | |
3114 | t = find_default_run_target (NULL); | |
3115 | ||
3116 | for (; t != NULL; t = t->beneath) | |
3117 | { | |
3118 | if (t->to_info_proc != NULL) | |
3119 | { | |
3120 | t->to_info_proc (t, args, what); | |
3121 | ||
3122 | if (targetdebug) | |
3123 | fprintf_unfiltered (gdb_stdlog, | |
3124 | "target_info_proc (\"%s\", %d)\n", args, what); | |
3125 | ||
451b7c33 | 3126 | return 1; |
145b16a9 UW |
3127 | } |
3128 | } | |
3129 | ||
451b7c33 | 3130 | return 0; |
145b16a9 UW |
3131 | } |
3132 | ||
03583c20 | 3133 | static int |
2bfc0540 | 3134 | find_default_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
3135 | { |
3136 | struct target_ops *t; | |
3137 | ||
3138 | t = find_default_run_target (NULL); | |
3139 | if (t && t->to_supports_disable_randomization) | |
2bfc0540 | 3140 | return (t->to_supports_disable_randomization) (t); |
03583c20 UW |
3141 | return 0; |
3142 | } | |
3143 | ||
3144 | int | |
3145 | target_supports_disable_randomization (void) | |
3146 | { | |
3147 | struct target_ops *t; | |
3148 | ||
3149 | for (t = ¤t_target; t != NULL; t = t->beneath) | |
3150 | if (t->to_supports_disable_randomization) | |
2bfc0540 | 3151 | return t->to_supports_disable_randomization (t); |
03583c20 UW |
3152 | |
3153 | return 0; | |
3154 | } | |
9908b566 | 3155 | |
07e059b5 VP |
3156 | char * |
3157 | target_get_osdata (const char *type) | |
3158 | { | |
07e059b5 VP |
3159 | struct target_ops *t; |
3160 | ||
739ef7fb PA |
3161 | /* If we're already connected to something that can get us OS |
3162 | related data, use it. Otherwise, try using the native | |
3163 | target. */ | |
3164 | if (current_target.to_stratum >= process_stratum) | |
6d097e65 | 3165 | t = current_target.beneath; |
739ef7fb PA |
3166 | else |
3167 | t = find_default_run_target ("get OS data"); | |
07e059b5 VP |
3168 | |
3169 | if (!t) | |
3170 | return NULL; | |
3171 | ||
6d097e65 | 3172 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
3173 | } |
3174 | ||
6c95b8df PA |
3175 | /* Determine the current address space of thread PTID. */ |
3176 | ||
3177 | struct address_space * | |
3178 | target_thread_address_space (ptid_t ptid) | |
3179 | { | |
c0694254 | 3180 | struct address_space *aspace; |
6c95b8df | 3181 | struct inferior *inf; |
c0694254 PA |
3182 | struct target_ops *t; |
3183 | ||
3184 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3185 | { | |
3186 | if (t->to_thread_address_space != NULL) | |
3187 | { | |
3188 | aspace = t->to_thread_address_space (t, ptid); | |
3189 | gdb_assert (aspace); | |
6c95b8df | 3190 | |
c0694254 PA |
3191 | if (targetdebug) |
3192 | fprintf_unfiltered (gdb_stdlog, | |
3193 | "target_thread_address_space (%s) = %d\n", | |
3194 | target_pid_to_str (ptid), | |
3195 | address_space_num (aspace)); | |
3196 | return aspace; | |
3197 | } | |
3198 | } | |
6c95b8df PA |
3199 | |
3200 | /* Fall-back to the "main" address space of the inferior. */ | |
3201 | inf = find_inferior_pid (ptid_get_pid (ptid)); | |
3202 | ||
3203 | if (inf == NULL || inf->aspace == NULL) | |
3e43a32a | 3204 | internal_error (__FILE__, __LINE__, |
9b20d036 MS |
3205 | _("Can't determine the current " |
3206 | "address space of thread %s\n"), | |
6c95b8df PA |
3207 | target_pid_to_str (ptid)); |
3208 | ||
3209 | return inf->aspace; | |
3210 | } | |
3211 | ||
7313baad UW |
3212 | |
3213 | /* Target file operations. */ | |
3214 | ||
3215 | static struct target_ops * | |
3216 | default_fileio_target (void) | |
3217 | { | |
3218 | /* If we're already connected to something that can perform | |
3219 | file I/O, use it. Otherwise, try using the native target. */ | |
3220 | if (current_target.to_stratum >= process_stratum) | |
3221 | return current_target.beneath; | |
3222 | else | |
3223 | return find_default_run_target ("file I/O"); | |
3224 | } | |
3225 | ||
3226 | /* Open FILENAME on the target, using FLAGS and MODE. Return a | |
3227 | target file descriptor, or -1 if an error occurs (and set | |
3228 | *TARGET_ERRNO). */ | |
3229 | int | |
3230 | target_fileio_open (const char *filename, int flags, int mode, | |
3231 | int *target_errno) | |
3232 | { | |
3233 | struct target_ops *t; | |
3234 | ||
3235 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3236 | { | |
3237 | if (t->to_fileio_open != NULL) | |
3238 | { | |
cd897586 | 3239 | int fd = t->to_fileio_open (t, filename, flags, mode, target_errno); |
7313baad UW |
3240 | |
3241 | if (targetdebug) | |
3242 | fprintf_unfiltered (gdb_stdlog, | |
3243 | "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n", | |
3244 | filename, flags, mode, | |
3245 | fd, fd != -1 ? 0 : *target_errno); | |
3246 | return fd; | |
3247 | } | |
3248 | } | |
3249 | ||
3250 | *target_errno = FILEIO_ENOSYS; | |
3251 | return -1; | |
3252 | } | |
3253 | ||
3254 | /* Write up to LEN bytes from WRITE_BUF to FD on the target. | |
3255 | Return the number of bytes written, or -1 if an error occurs | |
3256 | (and set *TARGET_ERRNO). */ | |
3257 | int | |
3258 | target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
3259 | ULONGEST offset, int *target_errno) | |
3260 | { | |
3261 | struct target_ops *t; | |
3262 | ||
3263 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3264 | { | |
3265 | if (t->to_fileio_pwrite != NULL) | |
3266 | { | |
0d866f62 | 3267 | int ret = t->to_fileio_pwrite (t, fd, write_buf, len, offset, |
7313baad UW |
3268 | target_errno); |
3269 | ||
3270 | if (targetdebug) | |
3271 | fprintf_unfiltered (gdb_stdlog, | |
a71b5a38 | 3272 | "target_fileio_pwrite (%d,...,%d,%s) " |
7313baad | 3273 | "= %d (%d)\n", |
a71b5a38 | 3274 | fd, len, pulongest (offset), |
7313baad UW |
3275 | ret, ret != -1 ? 0 : *target_errno); |
3276 | return ret; | |
3277 | } | |
3278 | } | |
3279 | ||
3280 | *target_errno = FILEIO_ENOSYS; | |
3281 | return -1; | |
3282 | } | |
3283 | ||
3284 | /* Read up to LEN bytes FD on the target into READ_BUF. | |
3285 | Return the number of bytes read, or -1 if an error occurs | |
3286 | (and set *TARGET_ERRNO). */ | |
3287 | int | |
3288 | target_fileio_pread (int fd, gdb_byte *read_buf, int len, | |
3289 | ULONGEST offset, int *target_errno) | |
3290 | { | |
3291 | struct target_ops *t; | |
3292 | ||
3293 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3294 | { | |
3295 | if (t->to_fileio_pread != NULL) | |
3296 | { | |
a3be983c | 3297 | int ret = t->to_fileio_pread (t, fd, read_buf, len, offset, |
7313baad UW |
3298 | target_errno); |
3299 | ||
3300 | if (targetdebug) | |
3301 | fprintf_unfiltered (gdb_stdlog, | |
a71b5a38 | 3302 | "target_fileio_pread (%d,...,%d,%s) " |
7313baad | 3303 | "= %d (%d)\n", |
a71b5a38 | 3304 | fd, len, pulongest (offset), |
7313baad UW |
3305 | ret, ret != -1 ? 0 : *target_errno); |
3306 | return ret; | |
3307 | } | |
3308 | } | |
3309 | ||
3310 | *target_errno = FILEIO_ENOSYS; | |
3311 | return -1; | |
3312 | } | |
3313 | ||
3314 | /* Close FD on the target. Return 0, or -1 if an error occurs | |
3315 | (and set *TARGET_ERRNO). */ | |
3316 | int | |
3317 | target_fileio_close (int fd, int *target_errno) | |
3318 | { | |
3319 | struct target_ops *t; | |
3320 | ||
3321 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3322 | { | |
3323 | if (t->to_fileio_close != NULL) | |
3324 | { | |
df39ea25 | 3325 | int ret = t->to_fileio_close (t, fd, target_errno); |
7313baad UW |
3326 | |
3327 | if (targetdebug) | |
3328 | fprintf_unfiltered (gdb_stdlog, | |
3329 | "target_fileio_close (%d) = %d (%d)\n", | |
3330 | fd, ret, ret != -1 ? 0 : *target_errno); | |
3331 | return ret; | |
3332 | } | |
3333 | } | |
3334 | ||
3335 | *target_errno = FILEIO_ENOSYS; | |
3336 | return -1; | |
3337 | } | |
3338 | ||
3339 | /* Unlink FILENAME on the target. Return 0, or -1 if an error | |
3340 | occurs (and set *TARGET_ERRNO). */ | |
3341 | int | |
3342 | target_fileio_unlink (const char *filename, int *target_errno) | |
3343 | { | |
3344 | struct target_ops *t; | |
3345 | ||
3346 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3347 | { | |
3348 | if (t->to_fileio_unlink != NULL) | |
3349 | { | |
dbbca37d | 3350 | int ret = t->to_fileio_unlink (t, filename, target_errno); |
7313baad UW |
3351 | |
3352 | if (targetdebug) | |
3353 | fprintf_unfiltered (gdb_stdlog, | |
3354 | "target_fileio_unlink (%s) = %d (%d)\n", | |
3355 | filename, ret, ret != -1 ? 0 : *target_errno); | |
3356 | return ret; | |
3357 | } | |
3358 | } | |
3359 | ||
3360 | *target_errno = FILEIO_ENOSYS; | |
3361 | return -1; | |
3362 | } | |
3363 | ||
b9e7b9c3 UW |
3364 | /* Read value of symbolic link FILENAME on the target. Return a |
3365 | null-terminated string allocated via xmalloc, or NULL if an error | |
3366 | occurs (and set *TARGET_ERRNO). */ | |
3367 | char * | |
3368 | target_fileio_readlink (const char *filename, int *target_errno) | |
3369 | { | |
3370 | struct target_ops *t; | |
3371 | ||
3372 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3373 | { | |
3374 | if (t->to_fileio_readlink != NULL) | |
3375 | { | |
fab5aa7c | 3376 | char *ret = t->to_fileio_readlink (t, filename, target_errno); |
b9e7b9c3 UW |
3377 | |
3378 | if (targetdebug) | |
3379 | fprintf_unfiltered (gdb_stdlog, | |
3380 | "target_fileio_readlink (%s) = %s (%d)\n", | |
3381 | filename, ret? ret : "(nil)", | |
3382 | ret? 0 : *target_errno); | |
3383 | return ret; | |
3384 | } | |
3385 | } | |
3386 | ||
3387 | *target_errno = FILEIO_ENOSYS; | |
3388 | return NULL; | |
3389 | } | |
3390 | ||
7313baad UW |
3391 | static void |
3392 | target_fileio_close_cleanup (void *opaque) | |
3393 | { | |
3394 | int fd = *(int *) opaque; | |
3395 | int target_errno; | |
3396 | ||
3397 | target_fileio_close (fd, &target_errno); | |
3398 | } | |
3399 | ||
3400 | /* Read target file FILENAME. Store the result in *BUF_P and | |
3401 | return the size of the transferred data. PADDING additional bytes are | |
3402 | available in *BUF_P. This is a helper function for | |
3403 | target_fileio_read_alloc; see the declaration of that function for more | |
3404 | information. */ | |
3405 | ||
3406 | static LONGEST | |
3407 | target_fileio_read_alloc_1 (const char *filename, | |
3408 | gdb_byte **buf_p, int padding) | |
3409 | { | |
3410 | struct cleanup *close_cleanup; | |
3411 | size_t buf_alloc, buf_pos; | |
3412 | gdb_byte *buf; | |
3413 | LONGEST n; | |
3414 | int fd; | |
3415 | int target_errno; | |
3416 | ||
3417 | fd = target_fileio_open (filename, FILEIO_O_RDONLY, 0700, &target_errno); | |
3418 | if (fd == -1) | |
3419 | return -1; | |
3420 | ||
3421 | close_cleanup = make_cleanup (target_fileio_close_cleanup, &fd); | |
3422 | ||
3423 | /* Start by reading up to 4K at a time. The target will throttle | |
3424 | this number down if necessary. */ | |
3425 | buf_alloc = 4096; | |
3426 | buf = xmalloc (buf_alloc); | |
3427 | buf_pos = 0; | |
3428 | while (1) | |
3429 | { | |
3430 | n = target_fileio_pread (fd, &buf[buf_pos], | |
3431 | buf_alloc - buf_pos - padding, buf_pos, | |
3432 | &target_errno); | |
3433 | if (n < 0) | |
3434 | { | |
3435 | /* An error occurred. */ | |
3436 | do_cleanups (close_cleanup); | |
3437 | xfree (buf); | |
3438 | return -1; | |
3439 | } | |
3440 | else if (n == 0) | |
3441 | { | |
3442 | /* Read all there was. */ | |
3443 | do_cleanups (close_cleanup); | |
3444 | if (buf_pos == 0) | |
3445 | xfree (buf); | |
3446 | else | |
3447 | *buf_p = buf; | |
3448 | return buf_pos; | |
3449 | } | |
3450 | ||
3451 | buf_pos += n; | |
3452 | ||
3453 | /* If the buffer is filling up, expand it. */ | |
3454 | if (buf_alloc < buf_pos * 2) | |
3455 | { | |
3456 | buf_alloc *= 2; | |
3457 | buf = xrealloc (buf, buf_alloc); | |
3458 | } | |
3459 | ||
3460 | QUIT; | |
3461 | } | |
3462 | } | |
3463 | ||
3464 | /* Read target file FILENAME. Store the result in *BUF_P and return | |
3465 | the size of the transferred data. See the declaration in "target.h" | |
3466 | function for more information about the return value. */ | |
3467 | ||
3468 | LONGEST | |
3469 | target_fileio_read_alloc (const char *filename, gdb_byte **buf_p) | |
3470 | { | |
3471 | return target_fileio_read_alloc_1 (filename, buf_p, 0); | |
3472 | } | |
3473 | ||
3474 | /* Read target file FILENAME. The result is NUL-terminated and | |
3475 | returned as a string, allocated using xmalloc. If an error occurs | |
3476 | or the transfer is unsupported, NULL is returned. Empty objects | |
3477 | are returned as allocated but empty strings. A warning is issued | |
3478 | if the result contains any embedded NUL bytes. */ | |
3479 | ||
3480 | char * | |
3481 | target_fileio_read_stralloc (const char *filename) | |
3482 | { | |
39086a0e PA |
3483 | gdb_byte *buffer; |
3484 | char *bufstr; | |
7313baad UW |
3485 | LONGEST i, transferred; |
3486 | ||
39086a0e PA |
3487 | transferred = target_fileio_read_alloc_1 (filename, &buffer, 1); |
3488 | bufstr = (char *) buffer; | |
7313baad UW |
3489 | |
3490 | if (transferred < 0) | |
3491 | return NULL; | |
3492 | ||
3493 | if (transferred == 0) | |
3494 | return xstrdup (""); | |
3495 | ||
39086a0e | 3496 | bufstr[transferred] = 0; |
7313baad UW |
3497 | |
3498 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
39086a0e PA |
3499 | for (i = strlen (bufstr); i < transferred; i++) |
3500 | if (bufstr[i] != 0) | |
7313baad UW |
3501 | { |
3502 | warning (_("target file %s " | |
3503 | "contained unexpected null characters"), | |
3504 | filename); | |
3505 | break; | |
3506 | } | |
3507 | ||
39086a0e | 3508 | return bufstr; |
7313baad UW |
3509 | } |
3510 | ||
3511 | ||
e0d24f8d | 3512 | static int |
31568a15 TT |
3513 | default_region_ok_for_hw_watchpoint (struct target_ops *self, |
3514 | CORE_ADDR addr, int len) | |
e0d24f8d | 3515 | { |
f5656ead | 3516 | return (len <= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT); |
ccaa32c7 GS |
3517 | } |
3518 | ||
5009afc5 AS |
3519 | static int |
3520 | default_watchpoint_addr_within_range (struct target_ops *target, | |
3521 | CORE_ADDR addr, | |
3522 | CORE_ADDR start, int length) | |
3523 | { | |
3524 | return addr >= start && addr < start + length; | |
3525 | } | |
3526 | ||
c2250ad1 UW |
3527 | static struct gdbarch * |
3528 | default_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
3529 | { | |
f5656ead | 3530 | return target_gdbarch (); |
c2250ad1 UW |
3531 | } |
3532 | ||
c906108c | 3533 | static int |
fba45db2 | 3534 | return_zero (void) |
c906108c SS |
3535 | { |
3536 | return 0; | |
3537 | } | |
3538 | ||
ccaa32c7 GS |
3539 | static int |
3540 | return_minus_one (void) | |
3541 | { | |
3542 | return -1; | |
3543 | } | |
3544 | ||
1b67eb02 AS |
3545 | static void * |
3546 | return_null (void) | |
3547 | { | |
3548 | return 0; | |
3549 | } | |
3550 | ||
ed9a39eb JM |
3551 | /* |
3552 | * Find the next target down the stack from the specified target. | |
3553 | */ | |
3554 | ||
3555 | struct target_ops * | |
fba45db2 | 3556 | find_target_beneath (struct target_ops *t) |
ed9a39eb | 3557 | { |
258b763a | 3558 | return t->beneath; |
ed9a39eb JM |
3559 | } |
3560 | ||
8b06beed TT |
3561 | /* See target.h. */ |
3562 | ||
3563 | struct target_ops * | |
3564 | find_target_at (enum strata stratum) | |
3565 | { | |
3566 | struct target_ops *t; | |
3567 | ||
3568 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3569 | if (t->to_stratum == stratum) | |
3570 | return t; | |
3571 | ||
3572 | return NULL; | |
3573 | } | |
3574 | ||
c906108c SS |
3575 | \f |
3576 | /* The inferior process has died. Long live the inferior! */ | |
3577 | ||
3578 | void | |
fba45db2 | 3579 | generic_mourn_inferior (void) |
c906108c | 3580 | { |
7f9f62ba | 3581 | ptid_t ptid; |
c906108c | 3582 | |
7f9f62ba | 3583 | ptid = inferior_ptid; |
39f77062 | 3584 | inferior_ptid = null_ptid; |
7f9f62ba | 3585 | |
f59f708a PA |
3586 | /* Mark breakpoints uninserted in case something tries to delete a |
3587 | breakpoint while we delete the inferior's threads (which would | |
3588 | fail, since the inferior is long gone). */ | |
3589 | mark_breakpoints_out (); | |
3590 | ||
7f9f62ba PA |
3591 | if (!ptid_equal (ptid, null_ptid)) |
3592 | { | |
3593 | int pid = ptid_get_pid (ptid); | |
6c95b8df | 3594 | exit_inferior (pid); |
7f9f62ba PA |
3595 | } |
3596 | ||
f59f708a PA |
3597 | /* Note this wipes step-resume breakpoints, so needs to be done |
3598 | after exit_inferior, which ends up referencing the step-resume | |
3599 | breakpoints through clear_thread_inferior_resources. */ | |
c906108c | 3600 | breakpoint_init_inferior (inf_exited); |
f59f708a | 3601 | |
c906108c SS |
3602 | registers_changed (); |
3603 | ||
c906108c SS |
3604 | reopen_exec_file (); |
3605 | reinit_frame_cache (); | |
3606 | ||
9a4105ab AC |
3607 | if (deprecated_detach_hook) |
3608 | deprecated_detach_hook (); | |
c906108c SS |
3609 | } |
3610 | \f | |
fd0a2a6f MK |
3611 | /* Convert a normal process ID to a string. Returns the string in a |
3612 | static buffer. */ | |
c906108c SS |
3613 | |
3614 | char * | |
39f77062 | 3615 | normal_pid_to_str (ptid_t ptid) |
c906108c | 3616 | { |
fd0a2a6f | 3617 | static char buf[32]; |
c906108c | 3618 | |
5fff8fc0 | 3619 | xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid)); |
c906108c SS |
3620 | return buf; |
3621 | } | |
3622 | ||
2c0b251b | 3623 | static char * |
117de6a9 PA |
3624 | dummy_pid_to_str (struct target_ops *ops, ptid_t ptid) |
3625 | { | |
3626 | return normal_pid_to_str (ptid); | |
3627 | } | |
3628 | ||
9b4eba8e HZ |
3629 | /* Error-catcher for target_find_memory_regions. */ |
3630 | static int | |
2e73927c TT |
3631 | dummy_find_memory_regions (struct target_ops *self, |
3632 | find_memory_region_ftype ignore1, void *ignore2) | |
be4d1333 | 3633 | { |
9b4eba8e | 3634 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3635 | return 0; |
3636 | } | |
3637 | ||
9b4eba8e HZ |
3638 | /* Error-catcher for target_make_corefile_notes. */ |
3639 | static char * | |
fc6691b2 TT |
3640 | dummy_make_corefile_notes (struct target_ops *self, |
3641 | bfd *ignore1, int *ignore2) | |
be4d1333 | 3642 | { |
9b4eba8e | 3643 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3644 | return NULL; |
3645 | } | |
3646 | ||
c906108c SS |
3647 | /* Set up the handful of non-empty slots needed by the dummy target |
3648 | vector. */ | |
3649 | ||
3650 | static void | |
fba45db2 | 3651 | init_dummy_target (void) |
c906108c SS |
3652 | { |
3653 | dummy_target.to_shortname = "None"; | |
3654 | dummy_target.to_longname = "None"; | |
3655 | dummy_target.to_doc = ""; | |
c906108c | 3656 | dummy_target.to_create_inferior = find_default_create_inferior; |
9908b566 | 3657 | dummy_target.to_supports_non_stop = find_default_supports_non_stop; |
03583c20 UW |
3658 | dummy_target.to_supports_disable_randomization |
3659 | = find_default_supports_disable_randomization; | |
117de6a9 | 3660 | dummy_target.to_pid_to_str = dummy_pid_to_str; |
c906108c | 3661 | dummy_target.to_stratum = dummy_stratum; |
c35b1492 PA |
3662 | dummy_target.to_has_all_memory = (int (*) (struct target_ops *)) return_zero; |
3663 | dummy_target.to_has_memory = (int (*) (struct target_ops *)) return_zero; | |
3664 | dummy_target.to_has_stack = (int (*) (struct target_ops *)) return_zero; | |
3665 | dummy_target.to_has_registers = (int (*) (struct target_ops *)) return_zero; | |
aeaec162 TT |
3666 | dummy_target.to_has_execution |
3667 | = (int (*) (struct target_ops *, ptid_t)) return_zero; | |
c906108c | 3668 | dummy_target.to_magic = OPS_MAGIC; |
1101cb7b TT |
3669 | |
3670 | install_dummy_methods (&dummy_target); | |
c906108c | 3671 | } |
c906108c | 3672 | \f |
c906108c | 3673 | static void |
fba45db2 | 3674 | debug_to_open (char *args, int from_tty) |
c906108c SS |
3675 | { |
3676 | debug_target.to_open (args, from_tty); | |
3677 | ||
96baa820 | 3678 | fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty); |
c906108c SS |
3679 | } |
3680 | ||
f1c07ab0 | 3681 | void |
460014f5 | 3682 | target_close (struct target_ops *targ) |
f1c07ab0 | 3683 | { |
7fdc1521 TT |
3684 | gdb_assert (!target_is_pushed (targ)); |
3685 | ||
f1c07ab0 | 3686 | if (targ->to_xclose != NULL) |
460014f5 | 3687 | targ->to_xclose (targ); |
f1c07ab0 | 3688 | else if (targ->to_close != NULL) |
de90e03d | 3689 | targ->to_close (targ); |
947b8855 PA |
3690 | |
3691 | if (targetdebug) | |
460014f5 | 3692 | fprintf_unfiltered (gdb_stdlog, "target_close ()\n"); |
f1c07ab0 AC |
3693 | } |
3694 | ||
136d6dae VP |
3695 | void |
3696 | target_attach (char *args, int from_tty) | |
3697 | { | |
e9a29200 TT |
3698 | current_target.to_attach (¤t_target, args, from_tty); |
3699 | if (targetdebug) | |
3700 | fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n", | |
3701 | args, from_tty); | |
136d6dae VP |
3702 | } |
3703 | ||
28439f5e PA |
3704 | int |
3705 | target_thread_alive (ptid_t ptid) | |
c906108c | 3706 | { |
28439f5e | 3707 | struct target_ops *t; |
5d502164 | 3708 | |
28439f5e PA |
3709 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3710 | { | |
3711 | if (t->to_thread_alive != NULL) | |
3712 | { | |
3713 | int retval; | |
c906108c | 3714 | |
28439f5e PA |
3715 | retval = t->to_thread_alive (t, ptid); |
3716 | if (targetdebug) | |
3717 | fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n", | |
dfd4cc63 | 3718 | ptid_get_pid (ptid), retval); |
28439f5e PA |
3719 | |
3720 | return retval; | |
3721 | } | |
3722 | } | |
3723 | ||
3724 | return 0; | |
3725 | } | |
3726 | ||
3727 | void | |
3728 | target_find_new_threads (void) | |
3729 | { | |
3730 | struct target_ops *t; | |
5d502164 | 3731 | |
28439f5e PA |
3732 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3733 | { | |
3734 | if (t->to_find_new_threads != NULL) | |
3735 | { | |
3736 | t->to_find_new_threads (t); | |
3737 | if (targetdebug) | |
3738 | fprintf_unfiltered (gdb_stdlog, "target_find_new_threads ()\n"); | |
3739 | ||
3740 | return; | |
3741 | } | |
3742 | } | |
c906108c SS |
3743 | } |
3744 | ||
d914c394 SS |
3745 | void |
3746 | target_stop (ptid_t ptid) | |
3747 | { | |
3748 | if (!may_stop) | |
3749 | { | |
3750 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3751 | return; | |
3752 | } | |
3753 | ||
1eab8a48 | 3754 | (*current_target.to_stop) (¤t_target, ptid); |
d914c394 SS |
3755 | } |
3756 | ||
c906108c | 3757 | static void |
f045800c | 3758 | debug_to_post_attach (struct target_ops *self, int pid) |
c906108c | 3759 | { |
f045800c | 3760 | debug_target.to_post_attach (&debug_target, pid); |
c906108c | 3761 | |
28439f5e | 3762 | fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid); |
c906108c SS |
3763 | } |
3764 | ||
09826ec5 PA |
3765 | /* Concatenate ELEM to LIST, a comma separate list, and return the |
3766 | result. The LIST incoming argument is released. */ | |
3767 | ||
3768 | static char * | |
3769 | str_comma_list_concat_elem (char *list, const char *elem) | |
3770 | { | |
3771 | if (list == NULL) | |
3772 | return xstrdup (elem); | |
3773 | else | |
3774 | return reconcat (list, list, ", ", elem, (char *) NULL); | |
3775 | } | |
3776 | ||
3777 | /* Helper for target_options_to_string. If OPT is present in | |
3778 | TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET. | |
3779 | Returns the new resulting string. OPT is removed from | |
3780 | TARGET_OPTIONS. */ | |
3781 | ||
3782 | static char * | |
3783 | do_option (int *target_options, char *ret, | |
3784 | int opt, char *opt_str) | |
3785 | { | |
3786 | if ((*target_options & opt) != 0) | |
3787 | { | |
3788 | ret = str_comma_list_concat_elem (ret, opt_str); | |
3789 | *target_options &= ~opt; | |
3790 | } | |
3791 | ||
3792 | return ret; | |
3793 | } | |
3794 | ||
3795 | char * | |
3796 | target_options_to_string (int target_options) | |
3797 | { | |
3798 | char *ret = NULL; | |
3799 | ||
3800 | #define DO_TARG_OPTION(OPT) \ | |
3801 | ret = do_option (&target_options, ret, OPT, #OPT) | |
3802 | ||
3803 | DO_TARG_OPTION (TARGET_WNOHANG); | |
3804 | ||
3805 | if (target_options != 0) | |
3806 | ret = str_comma_list_concat_elem (ret, "unknown???"); | |
3807 | ||
3808 | if (ret == NULL) | |
3809 | ret = xstrdup (""); | |
3810 | return ret; | |
3811 | } | |
3812 | ||
bf0c5130 | 3813 | static void |
56be3814 UW |
3814 | debug_print_register (const char * func, |
3815 | struct regcache *regcache, int regno) | |
bf0c5130 | 3816 | { |
f8d29908 | 3817 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
5d502164 | 3818 | |
bf0c5130 | 3819 | fprintf_unfiltered (gdb_stdlog, "%s ", func); |
f8d29908 | 3820 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) |
f8d29908 UW |
3821 | && gdbarch_register_name (gdbarch, regno) != NULL |
3822 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') | |
3823 | fprintf_unfiltered (gdb_stdlog, "(%s)", | |
3824 | gdbarch_register_name (gdbarch, regno)); | |
bf0c5130 AC |
3825 | else |
3826 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
0ff58721 | 3827 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) |
bf0c5130 | 3828 | { |
e17a4113 | 3829 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
f8d29908 | 3830 | int i, size = register_size (gdbarch, regno); |
e362b510 | 3831 | gdb_byte buf[MAX_REGISTER_SIZE]; |
5d502164 | 3832 | |
0ff58721 | 3833 | regcache_raw_collect (regcache, regno, buf); |
bf0c5130 | 3834 | fprintf_unfiltered (gdb_stdlog, " = "); |
81c4a259 | 3835 | for (i = 0; i < size; i++) |
bf0c5130 AC |
3836 | { |
3837 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
3838 | } | |
81c4a259 | 3839 | if (size <= sizeof (LONGEST)) |
bf0c5130 | 3840 | { |
e17a4113 | 3841 | ULONGEST val = extract_unsigned_integer (buf, size, byte_order); |
5d502164 | 3842 | |
0b1553bc UW |
3843 | fprintf_unfiltered (gdb_stdlog, " %s %s", |
3844 | core_addr_to_string_nz (val), plongest (val)); | |
bf0c5130 AC |
3845 | } |
3846 | } | |
3847 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
3848 | } | |
3849 | ||
28439f5e PA |
3850 | void |
3851 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 3852 | { |
28439f5e | 3853 | struct target_ops *t; |
5d502164 | 3854 | |
28439f5e PA |
3855 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3856 | { | |
3857 | if (t->to_fetch_registers != NULL) | |
3858 | { | |
3859 | t->to_fetch_registers (t, regcache, regno); | |
3860 | if (targetdebug) | |
3861 | debug_print_register ("target_fetch_registers", regcache, regno); | |
3862 | return; | |
3863 | } | |
3864 | } | |
c906108c SS |
3865 | } |
3866 | ||
28439f5e PA |
3867 | void |
3868 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 3869 | { |
28439f5e | 3870 | struct target_ops *t; |
5d502164 | 3871 | |
d914c394 SS |
3872 | if (!may_write_registers) |
3873 | error (_("Writing to registers is not allowed (regno %d)"), regno); | |
3874 | ||
6b84065d TT |
3875 | current_target.to_store_registers (¤t_target, regcache, regno); |
3876 | if (targetdebug) | |
28439f5e | 3877 | { |
6b84065d | 3878 | debug_print_register ("target_store_registers", regcache, regno); |
28439f5e | 3879 | } |
c906108c SS |
3880 | } |
3881 | ||
dc146f7c VP |
3882 | int |
3883 | target_core_of_thread (ptid_t ptid) | |
3884 | { | |
3885 | struct target_ops *t; | |
3886 | ||
3887 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3888 | { | |
3889 | if (t->to_core_of_thread != NULL) | |
3890 | { | |
3891 | int retval = t->to_core_of_thread (t, ptid); | |
5d502164 | 3892 | |
dc146f7c | 3893 | if (targetdebug) |
3e43a32a MS |
3894 | fprintf_unfiltered (gdb_stdlog, |
3895 | "target_core_of_thread (%d) = %d\n", | |
dfd4cc63 | 3896 | ptid_get_pid (ptid), retval); |
dc146f7c VP |
3897 | return retval; |
3898 | } | |
3899 | } | |
3900 | ||
3901 | return -1; | |
3902 | } | |
3903 | ||
4a5e7a5b PA |
3904 | int |
3905 | target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3906 | { | |
3907 | struct target_ops *t; | |
3908 | ||
3909 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3910 | { | |
3911 | if (t->to_verify_memory != NULL) | |
3912 | { | |
3913 | int retval = t->to_verify_memory (t, data, memaddr, size); | |
5d502164 | 3914 | |
4a5e7a5b | 3915 | if (targetdebug) |
3e43a32a MS |
3916 | fprintf_unfiltered (gdb_stdlog, |
3917 | "target_verify_memory (%s, %s) = %d\n", | |
f5656ead | 3918 | paddress (target_gdbarch (), memaddr), |
4a5e7a5b PA |
3919 | pulongest (size), |
3920 | retval); | |
3921 | return retval; | |
3922 | } | |
3923 | } | |
3924 | ||
3925 | tcomplain (); | |
3926 | } | |
3927 | ||
9c06b0b4 TJB |
3928 | /* The documentation for this function is in its prototype declaration in |
3929 | target.h. */ | |
3930 | ||
3931 | int | |
3932 | target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
3933 | { | |
3934 | struct target_ops *t; | |
3935 | ||
3936 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3937 | if (t->to_insert_mask_watchpoint != NULL) | |
3938 | { | |
3939 | int ret; | |
3940 | ||
3941 | ret = t->to_insert_mask_watchpoint (t, addr, mask, rw); | |
3942 | ||
3943 | if (targetdebug) | |
3944 | fprintf_unfiltered (gdb_stdlog, "\ | |
3945 | target_insert_mask_watchpoint (%s, %s, %d) = %d\n", | |
3946 | core_addr_to_string (addr), | |
3947 | core_addr_to_string (mask), rw, ret); | |
3948 | ||
3949 | return ret; | |
3950 | } | |
3951 | ||
3952 | return 1; | |
3953 | } | |
3954 | ||
3955 | /* The documentation for this function is in its prototype declaration in | |
3956 | target.h. */ | |
3957 | ||
3958 | int | |
3959 | target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
3960 | { | |
3961 | struct target_ops *t; | |
3962 | ||
3963 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3964 | if (t->to_remove_mask_watchpoint != NULL) | |
3965 | { | |
3966 | int ret; | |
3967 | ||
3968 | ret = t->to_remove_mask_watchpoint (t, addr, mask, rw); | |
3969 | ||
3970 | if (targetdebug) | |
3971 | fprintf_unfiltered (gdb_stdlog, "\ | |
3972 | target_remove_mask_watchpoint (%s, %s, %d) = %d\n", | |
3973 | core_addr_to_string (addr), | |
3974 | core_addr_to_string (mask), rw, ret); | |
3975 | ||
3976 | return ret; | |
3977 | } | |
3978 | ||
3979 | return 1; | |
3980 | } | |
3981 | ||
3982 | /* The documentation for this function is in its prototype declaration | |
3983 | in target.h. */ | |
3984 | ||
3985 | int | |
3986 | target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask) | |
3987 | { | |
3988 | struct target_ops *t; | |
3989 | ||
3990 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3991 | if (t->to_masked_watch_num_registers != NULL) | |
3992 | return t->to_masked_watch_num_registers (t, addr, mask); | |
3993 | ||
3994 | return -1; | |
3995 | } | |
3996 | ||
f1310107 TJB |
3997 | /* The documentation for this function is in its prototype declaration |
3998 | in target.h. */ | |
3999 | ||
4000 | int | |
4001 | target_ranged_break_num_registers (void) | |
4002 | { | |
4003 | struct target_ops *t; | |
4004 | ||
4005 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4006 | if (t->to_ranged_break_num_registers != NULL) | |
4007 | return t->to_ranged_break_num_registers (t); | |
4008 | ||
4009 | return -1; | |
4010 | } | |
4011 | ||
02d27625 MM |
4012 | /* See target.h. */ |
4013 | ||
02d27625 MM |
4014 | struct btrace_target_info * |
4015 | target_enable_btrace (ptid_t ptid) | |
4016 | { | |
4017 | struct target_ops *t; | |
4018 | ||
4019 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4020 | if (t->to_enable_btrace != NULL) | |
e3c49f88 | 4021 | return t->to_enable_btrace (t, ptid); |
02d27625 MM |
4022 | |
4023 | tcomplain (); | |
4024 | return NULL; | |
4025 | } | |
4026 | ||
4027 | /* See target.h. */ | |
4028 | ||
4029 | void | |
4030 | target_disable_btrace (struct btrace_target_info *btinfo) | |
4031 | { | |
4032 | struct target_ops *t; | |
4033 | ||
4034 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4035 | if (t->to_disable_btrace != NULL) | |
d92f7ee3 | 4036 | { |
25e95349 | 4037 | t->to_disable_btrace (t, btinfo); |
d92f7ee3 SDJ |
4038 | return; |
4039 | } | |
02d27625 MM |
4040 | |
4041 | tcomplain (); | |
4042 | } | |
4043 | ||
4044 | /* See target.h. */ | |
4045 | ||
4046 | void | |
4047 | target_teardown_btrace (struct btrace_target_info *btinfo) | |
4048 | { | |
4049 | struct target_ops *t; | |
4050 | ||
4051 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4052 | if (t->to_teardown_btrace != NULL) | |
d92f7ee3 | 4053 | { |
1777056d | 4054 | t->to_teardown_btrace (t, btinfo); |
d92f7ee3 SDJ |
4055 | return; |
4056 | } | |
02d27625 MM |
4057 | |
4058 | tcomplain (); | |
4059 | } | |
4060 | ||
4061 | /* See target.h. */ | |
4062 | ||
969c39fb MM |
4063 | enum btrace_error |
4064 | target_read_btrace (VEC (btrace_block_s) **btrace, | |
4065 | struct btrace_target_info *btinfo, | |
02d27625 MM |
4066 | enum btrace_read_type type) |
4067 | { | |
4068 | struct target_ops *t; | |
4069 | ||
4070 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4071 | if (t->to_read_btrace != NULL) | |
39c49f83 | 4072 | return t->to_read_btrace (t, btrace, btinfo, type); |
02d27625 MM |
4073 | |
4074 | tcomplain (); | |
969c39fb | 4075 | return BTRACE_ERR_NOT_SUPPORTED; |
02d27625 MM |
4076 | } |
4077 | ||
d02ed0bb MM |
4078 | /* See target.h. */ |
4079 | ||
7c1687a9 MM |
4080 | void |
4081 | target_stop_recording (void) | |
4082 | { | |
4083 | struct target_ops *t; | |
4084 | ||
4085 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4086 | if (t->to_stop_recording != NULL) | |
4087 | { | |
c6cd7c02 | 4088 | t->to_stop_recording (t); |
7c1687a9 MM |
4089 | return; |
4090 | } | |
4091 | ||
4092 | /* This is optional. */ | |
4093 | } | |
4094 | ||
4095 | /* See target.h. */ | |
4096 | ||
d02ed0bb MM |
4097 | void |
4098 | target_info_record (void) | |
4099 | { | |
4100 | struct target_ops *t; | |
4101 | ||
4102 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4103 | if (t->to_info_record != NULL) | |
4104 | { | |
630d6a4a | 4105 | t->to_info_record (t); |
d02ed0bb MM |
4106 | return; |
4107 | } | |
4108 | ||
4109 | tcomplain (); | |
4110 | } | |
4111 | ||
4112 | /* See target.h. */ | |
4113 | ||
4114 | void | |
85e1311a | 4115 | target_save_record (const char *filename) |
d02ed0bb MM |
4116 | { |
4117 | struct target_ops *t; | |
4118 | ||
4119 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4120 | if (t->to_save_record != NULL) | |
4121 | { | |
1390f529 | 4122 | t->to_save_record (t, filename); |
d02ed0bb MM |
4123 | return; |
4124 | } | |
4125 | ||
4126 | tcomplain (); | |
4127 | } | |
4128 | ||
4129 | /* See target.h. */ | |
4130 | ||
4131 | int | |
4132 | target_supports_delete_record (void) | |
4133 | { | |
4134 | struct target_ops *t; | |
4135 | ||
4136 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4137 | if (t->to_delete_record != NULL) | |
4138 | return 1; | |
4139 | ||
4140 | return 0; | |
4141 | } | |
4142 | ||
4143 | /* See target.h. */ | |
4144 | ||
4145 | void | |
4146 | target_delete_record (void) | |
4147 | { | |
4148 | struct target_ops *t; | |
4149 | ||
4150 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4151 | if (t->to_delete_record != NULL) | |
4152 | { | |
d1b55219 | 4153 | t->to_delete_record (t); |
d02ed0bb MM |
4154 | return; |
4155 | } | |
4156 | ||
4157 | tcomplain (); | |
4158 | } | |
4159 | ||
4160 | /* See target.h. */ | |
4161 | ||
4162 | int | |
4163 | target_record_is_replaying (void) | |
4164 | { | |
4165 | struct target_ops *t; | |
4166 | ||
4167 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4168 | if (t->to_record_is_replaying != NULL) | |
1c63c994 | 4169 | return t->to_record_is_replaying (t); |
d02ed0bb MM |
4170 | |
4171 | return 0; | |
4172 | } | |
4173 | ||
4174 | /* See target.h. */ | |
4175 | ||
4176 | void | |
4177 | target_goto_record_begin (void) | |
4178 | { | |
4179 | struct target_ops *t; | |
4180 | ||
4181 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4182 | if (t->to_goto_record_begin != NULL) | |
4183 | { | |
08475817 | 4184 | t->to_goto_record_begin (t); |
d02ed0bb MM |
4185 | return; |
4186 | } | |
4187 | ||
4188 | tcomplain (); | |
4189 | } | |
4190 | ||
4191 | /* See target.h. */ | |
4192 | ||
4193 | void | |
4194 | target_goto_record_end (void) | |
4195 | { | |
4196 | struct target_ops *t; | |
4197 | ||
4198 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4199 | if (t->to_goto_record_end != NULL) | |
4200 | { | |
307a1b91 | 4201 | t->to_goto_record_end (t); |
d02ed0bb MM |
4202 | return; |
4203 | } | |
4204 | ||
4205 | tcomplain (); | |
4206 | } | |
4207 | ||
4208 | /* See target.h. */ | |
4209 | ||
4210 | void | |
4211 | target_goto_record (ULONGEST insn) | |
4212 | { | |
4213 | struct target_ops *t; | |
4214 | ||
4215 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4216 | if (t->to_goto_record != NULL) | |
4217 | { | |
606183ac | 4218 | t->to_goto_record (t, insn); |
d02ed0bb MM |
4219 | return; |
4220 | } | |
4221 | ||
4222 | tcomplain (); | |
4223 | } | |
4224 | ||
67c86d06 MM |
4225 | /* See target.h. */ |
4226 | ||
4227 | void | |
4228 | target_insn_history (int size, int flags) | |
4229 | { | |
4230 | struct target_ops *t; | |
4231 | ||
4232 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4233 | if (t->to_insn_history != NULL) | |
4234 | { | |
7a6c5609 | 4235 | t->to_insn_history (t, size, flags); |
67c86d06 MM |
4236 | return; |
4237 | } | |
4238 | ||
4239 | tcomplain (); | |
4240 | } | |
4241 | ||
4242 | /* See target.h. */ | |
4243 | ||
4244 | void | |
4245 | target_insn_history_from (ULONGEST from, int size, int flags) | |
4246 | { | |
4247 | struct target_ops *t; | |
4248 | ||
4249 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4250 | if (t->to_insn_history_from != NULL) | |
4251 | { | |
9abc3ff3 | 4252 | t->to_insn_history_from (t, from, size, flags); |
67c86d06 MM |
4253 | return; |
4254 | } | |
4255 | ||
4256 | tcomplain (); | |
4257 | } | |
4258 | ||
4259 | /* See target.h. */ | |
4260 | ||
4261 | void | |
4262 | target_insn_history_range (ULONGEST begin, ULONGEST end, int flags) | |
4263 | { | |
4264 | struct target_ops *t; | |
4265 | ||
4266 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4267 | if (t->to_insn_history_range != NULL) | |
4268 | { | |
4e99c6b7 | 4269 | t->to_insn_history_range (t, begin, end, flags); |
67c86d06 MM |
4270 | return; |
4271 | } | |
4272 | ||
4273 | tcomplain (); | |
4274 | } | |
4275 | ||
15984c13 MM |
4276 | /* See target.h. */ |
4277 | ||
4278 | void | |
4279 | target_call_history (int size, int flags) | |
4280 | { | |
4281 | struct target_ops *t; | |
4282 | ||
4283 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4284 | if (t->to_call_history != NULL) | |
4285 | { | |
5df2fcba | 4286 | t->to_call_history (t, size, flags); |
15984c13 MM |
4287 | return; |
4288 | } | |
4289 | ||
4290 | tcomplain (); | |
4291 | } | |
4292 | ||
4293 | /* See target.h. */ | |
4294 | ||
4295 | void | |
4296 | target_call_history_from (ULONGEST begin, int size, int flags) | |
4297 | { | |
4298 | struct target_ops *t; | |
4299 | ||
4300 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4301 | if (t->to_call_history_from != NULL) | |
4302 | { | |
ec0aea04 | 4303 | t->to_call_history_from (t, begin, size, flags); |
15984c13 MM |
4304 | return; |
4305 | } | |
4306 | ||
4307 | tcomplain (); | |
4308 | } | |
4309 | ||
4310 | /* See target.h. */ | |
4311 | ||
4312 | void | |
4313 | target_call_history_range (ULONGEST begin, ULONGEST end, int flags) | |
4314 | { | |
4315 | struct target_ops *t; | |
4316 | ||
4317 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4318 | if (t->to_call_history_range != NULL) | |
4319 | { | |
f0d960ea | 4320 | t->to_call_history_range (t, begin, end, flags); |
15984c13 MM |
4321 | return; |
4322 | } | |
4323 | ||
4324 | tcomplain (); | |
4325 | } | |
4326 | ||
c906108c | 4327 | static void |
f32dbf8c | 4328 | debug_to_prepare_to_store (struct target_ops *self, struct regcache *regcache) |
c906108c | 4329 | { |
f32dbf8c | 4330 | debug_target.to_prepare_to_store (&debug_target, regcache); |
c906108c | 4331 | |
96baa820 | 4332 | fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n"); |
c906108c SS |
4333 | } |
4334 | ||
ea001bdc MM |
4335 | /* See target.h. */ |
4336 | ||
4337 | const struct frame_unwind * | |
4338 | target_get_unwinder (void) | |
4339 | { | |
4340 | struct target_ops *t; | |
4341 | ||
4342 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4343 | if (t->to_get_unwinder != NULL) | |
4344 | return t->to_get_unwinder; | |
4345 | ||
4346 | return NULL; | |
4347 | } | |
4348 | ||
4349 | /* See target.h. */ | |
4350 | ||
4351 | const struct frame_unwind * | |
4352 | target_get_tailcall_unwinder (void) | |
4353 | { | |
4354 | struct target_ops *t; | |
4355 | ||
4356 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4357 | if (t->to_get_tailcall_unwinder != NULL) | |
4358 | return t->to_get_tailcall_unwinder; | |
4359 | ||
4360 | return NULL; | |
4361 | } | |
4362 | ||
118e6252 MM |
4363 | /* See target.h. */ |
4364 | ||
4365 | CORE_ADDR | |
4366 | forward_target_decr_pc_after_break (struct target_ops *ops, | |
4367 | struct gdbarch *gdbarch) | |
4368 | { | |
4369 | for (; ops != NULL; ops = ops->beneath) | |
4370 | if (ops->to_decr_pc_after_break != NULL) | |
4371 | return ops->to_decr_pc_after_break (ops, gdbarch); | |
4372 | ||
4373 | return gdbarch_decr_pc_after_break (gdbarch); | |
4374 | } | |
4375 | ||
4376 | /* See target.h. */ | |
4377 | ||
4378 | CORE_ADDR | |
4379 | target_decr_pc_after_break (struct gdbarch *gdbarch) | |
4380 | { | |
4381 | return forward_target_decr_pc_after_break (current_target.beneath, gdbarch); | |
4382 | } | |
4383 | ||
c906108c | 4384 | static int |
961cb7b5 | 4385 | deprecated_debug_xfer_memory (CORE_ADDR memaddr, bfd_byte *myaddr, int len, |
c8e73a31 AC |
4386 | int write, struct mem_attrib *attrib, |
4387 | struct target_ops *target) | |
c906108c SS |
4388 | { |
4389 | int retval; | |
4390 | ||
c8e73a31 AC |
4391 | retval = debug_target.deprecated_xfer_memory (memaddr, myaddr, len, write, |
4392 | attrib, target); | |
c906108c | 4393 | |
96baa820 | 4394 | fprintf_unfiltered (gdb_stdlog, |
53b71562 | 4395 | "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d", |
f5656ead | 4396 | paddress (target_gdbarch (), memaddr), len, |
5af949e3 | 4397 | write ? "write" : "read", retval); |
c906108c | 4398 | |
c906108c SS |
4399 | if (retval > 0) |
4400 | { | |
4401 | int i; | |
4402 | ||
96baa820 | 4403 | fputs_unfiltered (", bytes =", gdb_stdlog); |
c906108c SS |
4404 | for (i = 0; i < retval; i++) |
4405 | { | |
53b71562 | 4406 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
333dabeb DJ |
4407 | { |
4408 | if (targetdebug < 2 && i > 0) | |
4409 | { | |
4410 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
4411 | break; | |
4412 | } | |
4413 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
4414 | } | |
2bc416ba | 4415 | |
96baa820 | 4416 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
c906108c SS |
4417 | } |
4418 | } | |
4419 | ||
96baa820 | 4420 | fputc_unfiltered ('\n', gdb_stdlog); |
c906108c SS |
4421 | |
4422 | return retval; | |
4423 | } | |
4424 | ||
4425 | static void | |
fba45db2 | 4426 | debug_to_files_info (struct target_ops *target) |
c906108c SS |
4427 | { |
4428 | debug_target.to_files_info (target); | |
4429 | ||
96baa820 | 4430 | fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n"); |
c906108c SS |
4431 | } |
4432 | ||
4433 | static int | |
3db08215 | 4434 | debug_to_insert_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, |
a6d9a66e | 4435 | struct bp_target_info *bp_tgt) |
c906108c SS |
4436 | { |
4437 | int retval; | |
4438 | ||
6b84065d | 4439 | retval = debug_target.to_insert_breakpoint (&debug_target, gdbarch, bp_tgt); |
c906108c | 4440 | |
96baa820 | 4441 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
4442 | "target_insert_breakpoint (%s, xxx) = %ld\n", |
4443 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 4444 | (unsigned long) retval); |
c906108c SS |
4445 | return retval; |
4446 | } | |
4447 | ||
4448 | static int | |
3db08215 | 4449 | debug_to_remove_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, |
a6d9a66e | 4450 | struct bp_target_info *bp_tgt) |
c906108c SS |
4451 | { |
4452 | int retval; | |
4453 | ||
6b84065d | 4454 | retval = debug_target.to_remove_breakpoint (&debug_target, gdbarch, bp_tgt); |
c906108c | 4455 | |
96baa820 | 4456 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
4457 | "target_remove_breakpoint (%s, xxx) = %ld\n", |
4458 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 4459 | (unsigned long) retval); |
c906108c SS |
4460 | return retval; |
4461 | } | |
4462 | ||
ccaa32c7 | 4463 | static int |
5461485a TT |
4464 | debug_to_can_use_hw_breakpoint (struct target_ops *self, |
4465 | int type, int cnt, int from_tty) | |
ccaa32c7 GS |
4466 | { |
4467 | int retval; | |
4468 | ||
5461485a TT |
4469 | retval = debug_target.to_can_use_hw_breakpoint (&debug_target, |
4470 | type, cnt, from_tty); | |
ccaa32c7 GS |
4471 | |
4472 | fprintf_unfiltered (gdb_stdlog, | |
4473 | "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n", | |
4474 | (unsigned long) type, | |
4475 | (unsigned long) cnt, | |
4476 | (unsigned long) from_tty, | |
4477 | (unsigned long) retval); | |
4478 | return retval; | |
4479 | } | |
4480 | ||
e0d24f8d | 4481 | static int |
31568a15 TT |
4482 | debug_to_region_ok_for_hw_watchpoint (struct target_ops *self, |
4483 | CORE_ADDR addr, int len) | |
e0d24f8d WZ |
4484 | { |
4485 | CORE_ADDR retval; | |
4486 | ||
31568a15 TT |
4487 | retval = debug_target.to_region_ok_for_hw_watchpoint (&debug_target, |
4488 | addr, len); | |
e0d24f8d WZ |
4489 | |
4490 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4491 | "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n", |
4492 | core_addr_to_string (addr), (unsigned long) len, | |
4493 | core_addr_to_string (retval)); | |
e0d24f8d WZ |
4494 | return retval; |
4495 | } | |
4496 | ||
0cf6dd15 | 4497 | static int |
c3a5ff89 TT |
4498 | debug_to_can_accel_watchpoint_condition (struct target_ops *self, |
4499 | CORE_ADDR addr, int len, int rw, | |
0cf6dd15 TJB |
4500 | struct expression *cond) |
4501 | { | |
4502 | int retval; | |
4503 | ||
c3a5ff89 TT |
4504 | retval = debug_target.to_can_accel_watchpoint_condition (&debug_target, |
4505 | addr, len, | |
3e43a32a | 4506 | rw, cond); |
0cf6dd15 TJB |
4507 | |
4508 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
4509 | "target_can_accel_watchpoint_condition " |
4510 | "(%s, %d, %d, %s) = %ld\n", | |
bd91e7ae OS |
4511 | core_addr_to_string (addr), len, rw, |
4512 | host_address_to_string (cond), (unsigned long) retval); | |
0cf6dd15 TJB |
4513 | return retval; |
4514 | } | |
4515 | ||
ccaa32c7 | 4516 | static int |
6a109b6b | 4517 | debug_to_stopped_by_watchpoint (struct target_ops *ops) |
ccaa32c7 GS |
4518 | { |
4519 | int retval; | |
4520 | ||
6a109b6b | 4521 | retval = debug_target.to_stopped_by_watchpoint (&debug_target); |
ccaa32c7 GS |
4522 | |
4523 | fprintf_unfiltered (gdb_stdlog, | |
d92524f1 | 4524 | "target_stopped_by_watchpoint () = %ld\n", |
ccaa32c7 GS |
4525 | (unsigned long) retval); |
4526 | return retval; | |
4527 | } | |
4528 | ||
4aa7a7f5 JJ |
4529 | static int |
4530 | debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr) | |
ccaa32c7 | 4531 | { |
4aa7a7f5 | 4532 | int retval; |
ccaa32c7 | 4533 | |
4aa7a7f5 | 4534 | retval = debug_target.to_stopped_data_address (target, addr); |
ccaa32c7 GS |
4535 | |
4536 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4537 | "target_stopped_data_address ([%s]) = %ld\n", |
4538 | core_addr_to_string (*addr), | |
4aa7a7f5 | 4539 | (unsigned long)retval); |
ccaa32c7 GS |
4540 | return retval; |
4541 | } | |
4542 | ||
5009afc5 AS |
4543 | static int |
4544 | debug_to_watchpoint_addr_within_range (struct target_ops *target, | |
4545 | CORE_ADDR addr, | |
4546 | CORE_ADDR start, int length) | |
4547 | { | |
4548 | int retval; | |
4549 | ||
4550 | retval = debug_target.to_watchpoint_addr_within_range (target, addr, | |
4551 | start, length); | |
4552 | ||
4553 | fprintf_filtered (gdb_stdlog, | |
bd91e7ae OS |
4554 | "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n", |
4555 | core_addr_to_string (addr), core_addr_to_string (start), | |
4556 | length, retval); | |
5009afc5 AS |
4557 | return retval; |
4558 | } | |
4559 | ||
ccaa32c7 | 4560 | static int |
23a26771 TT |
4561 | debug_to_insert_hw_breakpoint (struct target_ops *self, |
4562 | struct gdbarch *gdbarch, | |
a6d9a66e | 4563 | struct bp_target_info *bp_tgt) |
ccaa32c7 GS |
4564 | { |
4565 | int retval; | |
4566 | ||
23a26771 TT |
4567 | retval = debug_target.to_insert_hw_breakpoint (&debug_target, |
4568 | gdbarch, bp_tgt); | |
ccaa32c7 GS |
4569 | |
4570 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4571 | "target_insert_hw_breakpoint (%s, xxx) = %ld\n", |
4572 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
4573 | (unsigned long) retval); |
4574 | return retval; | |
4575 | } | |
4576 | ||
4577 | static int | |
a64dc96c TT |
4578 | debug_to_remove_hw_breakpoint (struct target_ops *self, |
4579 | struct gdbarch *gdbarch, | |
a6d9a66e | 4580 | struct bp_target_info *bp_tgt) |
ccaa32c7 GS |
4581 | { |
4582 | int retval; | |
4583 | ||
a64dc96c TT |
4584 | retval = debug_target.to_remove_hw_breakpoint (&debug_target, |
4585 | gdbarch, bp_tgt); | |
ccaa32c7 GS |
4586 | |
4587 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4588 | "target_remove_hw_breakpoint (%s, xxx) = %ld\n", |
4589 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
4590 | (unsigned long) retval); |
4591 | return retval; | |
4592 | } | |
4593 | ||
4594 | static int | |
7bb99c53 TT |
4595 | debug_to_insert_watchpoint (struct target_ops *self, |
4596 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 4597 | struct expression *cond) |
ccaa32c7 GS |
4598 | { |
4599 | int retval; | |
4600 | ||
7bb99c53 TT |
4601 | retval = debug_target.to_insert_watchpoint (&debug_target, |
4602 | addr, len, type, cond); | |
ccaa32c7 GS |
4603 | |
4604 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4605 | "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n", |
4606 | core_addr_to_string (addr), len, type, | |
4607 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
4608 | return retval; |
4609 | } | |
4610 | ||
4611 | static int | |
11b5219a TT |
4612 | debug_to_remove_watchpoint (struct target_ops *self, |
4613 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 4614 | struct expression *cond) |
ccaa32c7 GS |
4615 | { |
4616 | int retval; | |
4617 | ||
11b5219a TT |
4618 | retval = debug_target.to_remove_watchpoint (&debug_target, |
4619 | addr, len, type, cond); | |
ccaa32c7 GS |
4620 | |
4621 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4622 | "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n", |
4623 | core_addr_to_string (addr), len, type, | |
4624 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
4625 | return retval; |
4626 | } | |
4627 | ||
c906108c | 4628 | static void |
c42bf286 | 4629 | debug_to_terminal_init (struct target_ops *self) |
c906108c | 4630 | { |
c42bf286 | 4631 | debug_target.to_terminal_init (&debug_target); |
c906108c | 4632 | |
96baa820 | 4633 | fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n"); |
c906108c SS |
4634 | } |
4635 | ||
4636 | static void | |
d2f640d4 | 4637 | debug_to_terminal_inferior (struct target_ops *self) |
c906108c | 4638 | { |
d2f640d4 | 4639 | debug_target.to_terminal_inferior (&debug_target); |
c906108c | 4640 | |
96baa820 | 4641 | fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n"); |
c906108c SS |
4642 | } |
4643 | ||
4644 | static void | |
2e1e1a19 | 4645 | debug_to_terminal_ours_for_output (struct target_ops *self) |
c906108c | 4646 | { |
2e1e1a19 | 4647 | debug_target.to_terminal_ours_for_output (&debug_target); |
c906108c | 4648 | |
96baa820 | 4649 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n"); |
c906108c SS |
4650 | } |
4651 | ||
4652 | static void | |
e3594fd1 | 4653 | debug_to_terminal_ours (struct target_ops *self) |
c906108c | 4654 | { |
e3594fd1 | 4655 | debug_target.to_terminal_ours (&debug_target); |
c906108c | 4656 | |
96baa820 | 4657 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n"); |
c906108c SS |
4658 | } |
4659 | ||
a790ad35 | 4660 | static void |
ae3bd431 | 4661 | debug_to_terminal_save_ours (struct target_ops *self) |
a790ad35 | 4662 | { |
ae3bd431 | 4663 | debug_target.to_terminal_save_ours (&debug_target); |
a790ad35 SC |
4664 | |
4665 | fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n"); | |
4666 | } | |
4667 | ||
c906108c | 4668 | static void |
0a4f40a2 TT |
4669 | debug_to_terminal_info (struct target_ops *self, |
4670 | const char *arg, int from_tty) | |
c906108c | 4671 | { |
0a4f40a2 | 4672 | debug_target.to_terminal_info (&debug_target, arg, from_tty); |
c906108c | 4673 | |
96baa820 | 4674 | fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg, |
c906108c SS |
4675 | from_tty); |
4676 | } | |
4677 | ||
c906108c | 4678 | static void |
71a9f134 | 4679 | debug_to_load (struct target_ops *self, char *args, int from_tty) |
c906108c | 4680 | { |
71a9f134 | 4681 | debug_target.to_load (&debug_target, args, from_tty); |
c906108c | 4682 | |
96baa820 | 4683 | fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty); |
c906108c SS |
4684 | } |
4685 | ||
c906108c | 4686 | static void |
2e97a79e | 4687 | debug_to_post_startup_inferior (struct target_ops *self, ptid_t ptid) |
c906108c | 4688 | { |
2e97a79e | 4689 | debug_target.to_post_startup_inferior (&debug_target, ptid); |
c906108c | 4690 | |
96baa820 | 4691 | fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n", |
dfd4cc63 | 4692 | ptid_get_pid (ptid)); |
c906108c SS |
4693 | } |
4694 | ||
77b06cd7 | 4695 | static int |
a863b201 | 4696 | debug_to_insert_fork_catchpoint (struct target_ops *self, int pid) |
c906108c | 4697 | { |
77b06cd7 TJB |
4698 | int retval; |
4699 | ||
a863b201 | 4700 | retval = debug_target.to_insert_fork_catchpoint (&debug_target, pid); |
77b06cd7 TJB |
4701 | |
4702 | fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d) = %d\n", | |
4703 | pid, retval); | |
c906108c | 4704 | |
77b06cd7 | 4705 | return retval; |
c906108c SS |
4706 | } |
4707 | ||
4708 | static int | |
973fc227 | 4709 | debug_to_remove_fork_catchpoint (struct target_ops *self, int pid) |
c906108c | 4710 | { |
c5aa993b | 4711 | int retval; |
c906108c | 4712 | |
973fc227 | 4713 | retval = debug_target.to_remove_fork_catchpoint (&debug_target, pid); |
c906108c | 4714 | |
96baa820 | 4715 | fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n", |
c5aa993b | 4716 | pid, retval); |
c906108c SS |
4717 | |
4718 | return retval; | |
4719 | } | |
4720 | ||
77b06cd7 | 4721 | static int |
3ecc7da0 | 4722 | debug_to_insert_vfork_catchpoint (struct target_ops *self, int pid) |
c906108c | 4723 | { |
77b06cd7 TJB |
4724 | int retval; |
4725 | ||
3ecc7da0 | 4726 | retval = debug_target.to_insert_vfork_catchpoint (&debug_target, pid); |
c906108c | 4727 | |
77b06cd7 TJB |
4728 | fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d) = %d\n", |
4729 | pid, retval); | |
4730 | ||
4731 | return retval; | |
c906108c SS |
4732 | } |
4733 | ||
4734 | static int | |
e98cf0cd | 4735 | debug_to_remove_vfork_catchpoint (struct target_ops *self, int pid) |
c906108c | 4736 | { |
c5aa993b | 4737 | int retval; |
c906108c | 4738 | |
e98cf0cd | 4739 | retval = debug_target.to_remove_vfork_catchpoint (&debug_target, pid); |
c906108c | 4740 | |
96baa820 | 4741 | fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n", |
c5aa993b | 4742 | pid, retval); |
c906108c SS |
4743 | |
4744 | return retval; | |
4745 | } | |
4746 | ||
77b06cd7 | 4747 | static int |
ba025e51 | 4748 | debug_to_insert_exec_catchpoint (struct target_ops *self, int pid) |
c906108c | 4749 | { |
77b06cd7 TJB |
4750 | int retval; |
4751 | ||
ba025e51 | 4752 | retval = debug_target.to_insert_exec_catchpoint (&debug_target, pid); |
c906108c | 4753 | |
77b06cd7 TJB |
4754 | fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d) = %d\n", |
4755 | pid, retval); | |
4756 | ||
4757 | return retval; | |
c906108c SS |
4758 | } |
4759 | ||
4760 | static int | |
758e29d2 | 4761 | debug_to_remove_exec_catchpoint (struct target_ops *self, int pid) |
c906108c | 4762 | { |
c5aa993b | 4763 | int retval; |
c906108c | 4764 | |
758e29d2 | 4765 | retval = debug_target.to_remove_exec_catchpoint (&debug_target, pid); |
c906108c | 4766 | |
96baa820 | 4767 | fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n", |
c5aa993b | 4768 | pid, retval); |
c906108c SS |
4769 | |
4770 | return retval; | |
4771 | } | |
4772 | ||
c906108c | 4773 | static int |
d796e1d6 TT |
4774 | debug_to_has_exited (struct target_ops *self, |
4775 | int pid, int wait_status, int *exit_status) | |
c906108c | 4776 | { |
c5aa993b | 4777 | int has_exited; |
c906108c | 4778 | |
d796e1d6 TT |
4779 | has_exited = debug_target.to_has_exited (&debug_target, |
4780 | pid, wait_status, exit_status); | |
c906108c | 4781 | |
96baa820 | 4782 | fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n", |
c5aa993b | 4783 | pid, wait_status, *exit_status, has_exited); |
c906108c SS |
4784 | |
4785 | return has_exited; | |
4786 | } | |
4787 | ||
c906108c | 4788 | static int |
da82bd6b | 4789 | debug_to_can_run (struct target_ops *self) |
c906108c SS |
4790 | { |
4791 | int retval; | |
4792 | ||
da82bd6b | 4793 | retval = debug_target.to_can_run (&debug_target); |
c906108c | 4794 | |
96baa820 | 4795 | fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval); |
c906108c SS |
4796 | |
4797 | return retval; | |
4798 | } | |
4799 | ||
c2250ad1 UW |
4800 | static struct gdbarch * |
4801 | debug_to_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
4802 | { | |
4803 | struct gdbarch *retval; | |
4804 | ||
4805 | retval = debug_target.to_thread_architecture (ops, ptid); | |
4806 | ||
3e43a32a MS |
4807 | fprintf_unfiltered (gdb_stdlog, |
4808 | "target_thread_architecture (%s) = %s [%s]\n", | |
4809 | target_pid_to_str (ptid), | |
4810 | host_address_to_string (retval), | |
c2250ad1 UW |
4811 | gdbarch_bfd_arch_info (retval)->printable_name); |
4812 | return retval; | |
4813 | } | |
4814 | ||
c906108c | 4815 | static void |
1eab8a48 | 4816 | debug_to_stop (struct target_ops *self, ptid_t ptid) |
c906108c | 4817 | { |
1eab8a48 | 4818 | debug_target.to_stop (&debug_target, ptid); |
c906108c | 4819 | |
94cc34af PA |
4820 | fprintf_unfiltered (gdb_stdlog, "target_stop (%s)\n", |
4821 | target_pid_to_str (ptid)); | |
c906108c SS |
4822 | } |
4823 | ||
96baa820 | 4824 | static void |
1aac633b | 4825 | debug_to_rcmd (struct target_ops *self, char *command, |
d9fcf2fb | 4826 | struct ui_file *outbuf) |
96baa820 | 4827 | { |
1aac633b | 4828 | debug_target.to_rcmd (&debug_target, command, outbuf); |
96baa820 JM |
4829 | fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command); |
4830 | } | |
4831 | ||
c906108c | 4832 | static char * |
8dd27370 | 4833 | debug_to_pid_to_exec_file (struct target_ops *self, int pid) |
c906108c | 4834 | { |
c5aa993b | 4835 | char *exec_file; |
c906108c | 4836 | |
8dd27370 | 4837 | exec_file = debug_target.to_pid_to_exec_file (&debug_target, pid); |
c906108c | 4838 | |
96baa820 | 4839 | fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n", |
c5aa993b | 4840 | pid, exec_file); |
c906108c SS |
4841 | |
4842 | return exec_file; | |
4843 | } | |
4844 | ||
c906108c | 4845 | static void |
fba45db2 | 4846 | setup_target_debug (void) |
c906108c SS |
4847 | { |
4848 | memcpy (&debug_target, ¤t_target, sizeof debug_target); | |
4849 | ||
4850 | current_target.to_open = debug_to_open; | |
c906108c | 4851 | current_target.to_post_attach = debug_to_post_attach; |
c906108c | 4852 | current_target.to_prepare_to_store = debug_to_prepare_to_store; |
c8e73a31 | 4853 | current_target.deprecated_xfer_memory = deprecated_debug_xfer_memory; |
c906108c SS |
4854 | current_target.to_files_info = debug_to_files_info; |
4855 | current_target.to_insert_breakpoint = debug_to_insert_breakpoint; | |
4856 | current_target.to_remove_breakpoint = debug_to_remove_breakpoint; | |
ccaa32c7 GS |
4857 | current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint; |
4858 | current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint; | |
4859 | current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint; | |
4860 | current_target.to_insert_watchpoint = debug_to_insert_watchpoint; | |
4861 | current_target.to_remove_watchpoint = debug_to_remove_watchpoint; | |
4862 | current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint; | |
4863 | current_target.to_stopped_data_address = debug_to_stopped_data_address; | |
3e43a32a MS |
4864 | current_target.to_watchpoint_addr_within_range |
4865 | = debug_to_watchpoint_addr_within_range; | |
4866 | current_target.to_region_ok_for_hw_watchpoint | |
4867 | = debug_to_region_ok_for_hw_watchpoint; | |
4868 | current_target.to_can_accel_watchpoint_condition | |
4869 | = debug_to_can_accel_watchpoint_condition; | |
c906108c SS |
4870 | current_target.to_terminal_init = debug_to_terminal_init; |
4871 | current_target.to_terminal_inferior = debug_to_terminal_inferior; | |
3e43a32a MS |
4872 | current_target.to_terminal_ours_for_output |
4873 | = debug_to_terminal_ours_for_output; | |
c906108c | 4874 | current_target.to_terminal_ours = debug_to_terminal_ours; |
a790ad35 | 4875 | current_target.to_terminal_save_ours = debug_to_terminal_save_ours; |
c906108c | 4876 | current_target.to_terminal_info = debug_to_terminal_info; |
c906108c | 4877 | current_target.to_load = debug_to_load; |
c906108c | 4878 | current_target.to_post_startup_inferior = debug_to_post_startup_inferior; |
c906108c SS |
4879 | current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint; |
4880 | current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint; | |
4881 | current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint; | |
4882 | current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint; | |
c906108c SS |
4883 | current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint; |
4884 | current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint; | |
c906108c | 4885 | current_target.to_has_exited = debug_to_has_exited; |
c906108c | 4886 | current_target.to_can_run = debug_to_can_run; |
c906108c | 4887 | current_target.to_stop = debug_to_stop; |
96baa820 | 4888 | current_target.to_rcmd = debug_to_rcmd; |
c906108c | 4889 | current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file; |
c2250ad1 | 4890 | current_target.to_thread_architecture = debug_to_thread_architecture; |
c906108c | 4891 | } |
c906108c | 4892 | \f |
c5aa993b JM |
4893 | |
4894 | static char targ_desc[] = | |
3e43a32a MS |
4895 | "Names of targets and files being debugged.\nShows the entire \ |
4896 | stack of targets currently in use (including the exec-file,\n\ | |
c906108c SS |
4897 | core-file, and process, if any), as well as the symbol file name."; |
4898 | ||
a53f3625 TT |
4899 | static void |
4900 | default_rcmd (struct target_ops *self, char *command, struct ui_file *output) | |
4901 | { | |
4902 | error (_("\"monitor\" command not supported by this target.")); | |
4903 | } | |
4904 | ||
96baa820 JM |
4905 | static void |
4906 | do_monitor_command (char *cmd, | |
4907 | int from_tty) | |
4908 | { | |
96baa820 JM |
4909 | target_rcmd (cmd, gdb_stdtarg); |
4910 | } | |
4911 | ||
87680a14 JB |
4912 | /* Print the name of each layers of our target stack. */ |
4913 | ||
4914 | static void | |
4915 | maintenance_print_target_stack (char *cmd, int from_tty) | |
4916 | { | |
4917 | struct target_ops *t; | |
4918 | ||
4919 | printf_filtered (_("The current target stack is:\n")); | |
4920 | ||
4921 | for (t = target_stack; t != NULL; t = t->beneath) | |
4922 | { | |
4923 | printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname); | |
4924 | } | |
4925 | } | |
4926 | ||
c6ebd6cf VP |
4927 | /* Controls if async mode is permitted. */ |
4928 | int target_async_permitted = 0; | |
4929 | ||
4930 | /* The set command writes to this variable. If the inferior is | |
b5419e49 | 4931 | executing, target_async_permitted is *not* updated. */ |
c6ebd6cf VP |
4932 | static int target_async_permitted_1 = 0; |
4933 | ||
4934 | static void | |
9401a810 PA |
4935 | set_target_async_command (char *args, int from_tty, |
4936 | struct cmd_list_element *c) | |
c6ebd6cf | 4937 | { |
c35b1492 | 4938 | if (have_live_inferiors ()) |
c6ebd6cf VP |
4939 | { |
4940 | target_async_permitted_1 = target_async_permitted; | |
4941 | error (_("Cannot change this setting while the inferior is running.")); | |
4942 | } | |
4943 | ||
4944 | target_async_permitted = target_async_permitted_1; | |
4945 | } | |
4946 | ||
4947 | static void | |
9401a810 PA |
4948 | show_target_async_command (struct ui_file *file, int from_tty, |
4949 | struct cmd_list_element *c, | |
4950 | const char *value) | |
c6ebd6cf | 4951 | { |
3e43a32a MS |
4952 | fprintf_filtered (file, |
4953 | _("Controlling the inferior in " | |
4954 | "asynchronous mode is %s.\n"), value); | |
c6ebd6cf VP |
4955 | } |
4956 | ||
d914c394 SS |
4957 | /* Temporary copies of permission settings. */ |
4958 | ||
4959 | static int may_write_registers_1 = 1; | |
4960 | static int may_write_memory_1 = 1; | |
4961 | static int may_insert_breakpoints_1 = 1; | |
4962 | static int may_insert_tracepoints_1 = 1; | |
4963 | static int may_insert_fast_tracepoints_1 = 1; | |
4964 | static int may_stop_1 = 1; | |
4965 | ||
4966 | /* Make the user-set values match the real values again. */ | |
4967 | ||
4968 | void | |
4969 | update_target_permissions (void) | |
4970 | { | |
4971 | may_write_registers_1 = may_write_registers; | |
4972 | may_write_memory_1 = may_write_memory; | |
4973 | may_insert_breakpoints_1 = may_insert_breakpoints; | |
4974 | may_insert_tracepoints_1 = may_insert_tracepoints; | |
4975 | may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints; | |
4976 | may_stop_1 = may_stop; | |
4977 | } | |
4978 | ||
4979 | /* The one function handles (most of) the permission flags in the same | |
4980 | way. */ | |
4981 | ||
4982 | static void | |
4983 | set_target_permissions (char *args, int from_tty, | |
4984 | struct cmd_list_element *c) | |
4985 | { | |
4986 | if (target_has_execution) | |
4987 | { | |
4988 | update_target_permissions (); | |
4989 | error (_("Cannot change this setting while the inferior is running.")); | |
4990 | } | |
4991 | ||
4992 | /* Make the real values match the user-changed values. */ | |
4993 | may_write_registers = may_write_registers_1; | |
4994 | may_insert_breakpoints = may_insert_breakpoints_1; | |
4995 | may_insert_tracepoints = may_insert_tracepoints_1; | |
4996 | may_insert_fast_tracepoints = may_insert_fast_tracepoints_1; | |
4997 | may_stop = may_stop_1; | |
4998 | update_observer_mode (); | |
4999 | } | |
5000 | ||
5001 | /* Set memory write permission independently of observer mode. */ | |
5002 | ||
5003 | static void | |
5004 | set_write_memory_permission (char *args, int from_tty, | |
5005 | struct cmd_list_element *c) | |
5006 | { | |
5007 | /* Make the real values match the user-changed values. */ | |
5008 | may_write_memory = may_write_memory_1; | |
5009 | update_observer_mode (); | |
5010 | } | |
5011 | ||
5012 | ||
c906108c | 5013 | void |
fba45db2 | 5014 | initialize_targets (void) |
c906108c SS |
5015 | { |
5016 | init_dummy_target (); | |
5017 | push_target (&dummy_target); | |
5018 | ||
5019 | add_info ("target", target_info, targ_desc); | |
5020 | add_info ("files", target_info, targ_desc); | |
5021 | ||
ccce17b0 | 5022 | add_setshow_zuinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
85c07804 AC |
5023 | Set target debugging."), _("\ |
5024 | Show target debugging."), _("\ | |
333dabeb DJ |
5025 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
5026 | verbose. Changes do not take effect until the next \"run\" or \"target\"\n\ | |
85c07804 | 5027 | command."), |
ccce17b0 YQ |
5028 | NULL, |
5029 | show_targetdebug, | |
5030 | &setdebuglist, &showdebuglist); | |
3a11626d | 5031 | |
2bc416ba | 5032 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
5033 | &trust_readonly, _("\ |
5034 | Set mode for reading from readonly sections."), _("\ | |
5035 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
5036 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
5037 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 5038 | result in significant performance improvement for remote targets."), |
2c5b56ce | 5039 | NULL, |
920d2a44 | 5040 | show_trust_readonly, |
e707bbc2 | 5041 | &setlist, &showlist); |
96baa820 JM |
5042 | |
5043 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 5044 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 5045 | |
87680a14 JB |
5046 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
5047 | _("Print the name of each layer of the internal target stack."), | |
5048 | &maintenanceprintlist); | |
5049 | ||
c6ebd6cf VP |
5050 | add_setshow_boolean_cmd ("target-async", no_class, |
5051 | &target_async_permitted_1, _("\ | |
5052 | Set whether gdb controls the inferior in asynchronous mode."), _("\ | |
5053 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
5054 | Tells gdb whether to control the inferior in asynchronous mode."), | |
9401a810 PA |
5055 | set_target_async_command, |
5056 | show_target_async_command, | |
c6ebd6cf VP |
5057 | &setlist, |
5058 | &showlist); | |
5059 | ||
d914c394 SS |
5060 | add_setshow_boolean_cmd ("may-write-registers", class_support, |
5061 | &may_write_registers_1, _("\ | |
5062 | Set permission to write into registers."), _("\ | |
5063 | Show permission to write into registers."), _("\ | |
5064 | When this permission is on, GDB may write into the target's registers.\n\ | |
5065 | Otherwise, any sort of write attempt will result in an error."), | |
5066 | set_target_permissions, NULL, | |
5067 | &setlist, &showlist); | |
5068 | ||
5069 | add_setshow_boolean_cmd ("may-write-memory", class_support, | |
5070 | &may_write_memory_1, _("\ | |
5071 | Set permission to write into target memory."), _("\ | |
5072 | Show permission to write into target memory."), _("\ | |
5073 | When this permission is on, GDB may write into the target's memory.\n\ | |
5074 | Otherwise, any sort of write attempt will result in an error."), | |
5075 | set_write_memory_permission, NULL, | |
5076 | &setlist, &showlist); | |
5077 | ||
5078 | add_setshow_boolean_cmd ("may-insert-breakpoints", class_support, | |
5079 | &may_insert_breakpoints_1, _("\ | |
5080 | Set permission to insert breakpoints in the target."), _("\ | |
5081 | Show permission to insert breakpoints in the target."), _("\ | |
5082 | When this permission is on, GDB may insert breakpoints in the program.\n\ | |
5083 | Otherwise, any sort of insertion attempt will result in an error."), | |
5084 | set_target_permissions, NULL, | |
5085 | &setlist, &showlist); | |
5086 | ||
5087 | add_setshow_boolean_cmd ("may-insert-tracepoints", class_support, | |
5088 | &may_insert_tracepoints_1, _("\ | |
5089 | Set permission to insert tracepoints in the target."), _("\ | |
5090 | Show permission to insert tracepoints in the target."), _("\ | |
5091 | When this permission is on, GDB may insert tracepoints in the program.\n\ | |
5092 | Otherwise, any sort of insertion attempt will result in an error."), | |
5093 | set_target_permissions, NULL, | |
5094 | &setlist, &showlist); | |
5095 | ||
5096 | add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support, | |
5097 | &may_insert_fast_tracepoints_1, _("\ | |
5098 | Set permission to insert fast tracepoints in the target."), _("\ | |
5099 | Show permission to insert fast tracepoints in the target."), _("\ | |
5100 | When this permission is on, GDB may insert fast tracepoints.\n\ | |
5101 | Otherwise, any sort of insertion attempt will result in an error."), | |
5102 | set_target_permissions, NULL, | |
5103 | &setlist, &showlist); | |
5104 | ||
5105 | add_setshow_boolean_cmd ("may-interrupt", class_support, | |
5106 | &may_stop_1, _("\ | |
5107 | Set permission to interrupt or signal the target."), _("\ | |
5108 | Show permission to interrupt or signal the target."), _("\ | |
5109 | When this permission is on, GDB may interrupt/stop the target's execution.\n\ | |
5110 | Otherwise, any attempt to interrupt or stop will be ignored."), | |
5111 | set_target_permissions, NULL, | |
5112 | &setlist, &showlist); | |
c906108c | 5113 | } |