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. */ |
6fea14cd | 700 | /* Do not inherit to_get_tracepoint_status. */ |
e51c07ea | 701 | /* Do not inherit to_trace_stop. */ |
afc94e66 | 702 | /* Do not inherit to_trace_find. */ |
959bcd0b | 703 | /* Do not inherit to_get_trace_state_variable_value. */ |
a2e6c147 | 704 | /* Do not inherit to_save_trace_data. */ |
1e949b00 | 705 | /* Do not inherit to_upload_tracepoints. */ |
08120467 | 706 | /* Do not inherit to_upload_trace_state_variables. */ |
ace92e7d | 707 | /* Do not inherit to_get_raw_trace_data. */ |
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; |
405f8e94 | 755 | de_fault (to_get_min_fast_tracepoint_insn_len, |
0e67620a | 756 | (int (*) (struct target_ops *)) |
405f8e94 | 757 | return_minus_one); |
35b1e5cc | 758 | de_fault (to_set_disconnected_tracing, |
37b25738 | 759 | (void (*) (struct target_ops *, int)) |
4daf5ac0 SS |
760 | target_ignore); |
761 | de_fault (to_set_circular_trace_buffer, | |
736d5b1f | 762 | (void (*) (struct target_ops *, int)) |
4daf5ac0 | 763 | target_ignore); |
f6f899bf | 764 | de_fault (to_set_trace_buffer_size, |
4da384be | 765 | (void (*) (struct target_ops *, LONGEST)) |
f6f899bf | 766 | target_ignore); |
f196051f | 767 | de_fault (to_set_trace_notes, |
d9e68a2c TT |
768 | (int (*) (struct target_ops *, |
769 | const char *, const char *, const char *)) | |
f196051f | 770 | return_zero); |
711e434b | 771 | de_fault (to_get_tib_address, |
bd7ae0f5 | 772 | (int (*) (struct target_ops *, ptid_t, CORE_ADDR *)) |
711e434b | 773 | tcomplain); |
d914c394 | 774 | de_fault (to_set_permissions, |
c378d69d | 775 | (void (*) (struct target_ops *)) |
d914c394 | 776 | target_ignore); |
0fb4aa4b | 777 | de_fault (to_static_tracepoint_marker_at, |
61fc905d TT |
778 | (int (*) (struct target_ops *, |
779 | CORE_ADDR, struct static_tracepoint_marker *)) | |
0fb4aa4b PA |
780 | return_zero); |
781 | de_fault (to_static_tracepoint_markers_by_strid, | |
c686c57f TT |
782 | (VEC(static_tracepoint_marker_p) * (*) (struct target_ops *, |
783 | const char *)) | |
0fb4aa4b | 784 | tcomplain); |
b3b9301e | 785 | de_fault (to_traceframe_info, |
a893e81f | 786 | (struct traceframe_info * (*) (struct target_ops *)) |
1b67eb02 | 787 | return_null); |
b775012e | 788 | de_fault (to_supports_evaluation_of_breakpoint_conditions, |
efcc2da7 | 789 | (int (*) (struct target_ops *)) |
b775012e | 790 | return_zero); |
d3ce09f5 | 791 | de_fault (to_can_run_breakpoint_commands, |
78eff0ec | 792 | (int (*) (struct target_ops *)) |
d3ce09f5 | 793 | return_zero); |
d1feda86 | 794 | de_fault (to_use_agent, |
2c152180 | 795 | (int (*) (struct target_ops *, int)) |
d1feda86 YQ |
796 | tcomplain); |
797 | de_fault (to_can_use_agent, | |
fe38f897 | 798 | (int (*) (struct target_ops *)) |
d1feda86 | 799 | return_zero); |
ced63ec0 | 800 | de_fault (to_augmented_libraries_svr4_read, |
5436ff03 | 801 | (int (*) (struct target_ops *)) |
ced63ec0 | 802 | return_zero); |
32231432 | 803 | |
c906108c | 804 | #undef de_fault |
c906108c | 805 | |
7998dfc3 AC |
806 | /* Finally, position the target-stack beneath the squashed |
807 | "current_target". That way code looking for a non-inherited | |
808 | target method can quickly and simply find it. */ | |
809 | current_target.beneath = target_stack; | |
b4b61fdb DJ |
810 | |
811 | if (targetdebug) | |
812 | setup_target_debug (); | |
c906108c SS |
813 | } |
814 | ||
815 | /* Push a new target type into the stack of the existing target accessors, | |
816 | possibly superseding some of the existing accessors. | |
817 | ||
c906108c SS |
818 | Rather than allow an empty stack, we always have the dummy target at |
819 | the bottom stratum, so we can call the function vectors without | |
820 | checking them. */ | |
821 | ||
b26a4dcb | 822 | void |
fba45db2 | 823 | push_target (struct target_ops *t) |
c906108c | 824 | { |
258b763a | 825 | struct target_ops **cur; |
c906108c SS |
826 | |
827 | /* Check magic number. If wrong, it probably means someone changed | |
828 | the struct definition, but not all the places that initialize one. */ | |
829 | if (t->to_magic != OPS_MAGIC) | |
830 | { | |
c5aa993b JM |
831 | fprintf_unfiltered (gdb_stderr, |
832 | "Magic number of %s target struct wrong\n", | |
833 | t->to_shortname); | |
3e43a32a MS |
834 | internal_error (__FILE__, __LINE__, |
835 | _("failed internal consistency check")); | |
c906108c SS |
836 | } |
837 | ||
258b763a AC |
838 | /* Find the proper stratum to install this target in. */ |
839 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
c906108c | 840 | { |
258b763a | 841 | if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum) |
c906108c SS |
842 | break; |
843 | } | |
844 | ||
258b763a | 845 | /* If there's already targets at this stratum, remove them. */ |
88c231eb | 846 | /* FIXME: cagney/2003-10-15: I think this should be popping all |
258b763a AC |
847 | targets to CUR, and not just those at this stratum level. */ |
848 | while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum) | |
849 | { | |
850 | /* There's already something at this stratum level. Close it, | |
851 | and un-hook it from the stack. */ | |
852 | struct target_ops *tmp = (*cur); | |
5d502164 | 853 | |
258b763a AC |
854 | (*cur) = (*cur)->beneath; |
855 | tmp->beneath = NULL; | |
460014f5 | 856 | target_close (tmp); |
258b763a | 857 | } |
c906108c SS |
858 | |
859 | /* We have removed all targets in our stratum, now add the new one. */ | |
258b763a AC |
860 | t->beneath = (*cur); |
861 | (*cur) = t; | |
c906108c SS |
862 | |
863 | update_current_target (); | |
c906108c SS |
864 | } |
865 | ||
2bc416ba | 866 | /* Remove a target_ops vector from the stack, wherever it may be. |
c906108c SS |
867 | Return how many times it was removed (0 or 1). */ |
868 | ||
869 | int | |
fba45db2 | 870 | unpush_target (struct target_ops *t) |
c906108c | 871 | { |
258b763a AC |
872 | struct target_ops **cur; |
873 | struct target_ops *tmp; | |
c906108c | 874 | |
c8d104ad PA |
875 | if (t->to_stratum == dummy_stratum) |
876 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 877 | _("Attempt to unpush the dummy target")); |
c8d104ad | 878 | |
c906108c | 879 | /* Look for the specified target. Note that we assume that a target |
c378eb4e | 880 | can only occur once in the target stack. */ |
c906108c | 881 | |
258b763a AC |
882 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) |
883 | { | |
884 | if ((*cur) == t) | |
885 | break; | |
886 | } | |
c906108c | 887 | |
305436e0 PA |
888 | /* If we don't find target_ops, quit. Only open targets should be |
889 | closed. */ | |
258b763a | 890 | if ((*cur) == NULL) |
305436e0 | 891 | return 0; |
5269965e | 892 | |
c378eb4e | 893 | /* Unchain the target. */ |
258b763a AC |
894 | tmp = (*cur); |
895 | (*cur) = (*cur)->beneath; | |
896 | tmp->beneath = NULL; | |
c906108c SS |
897 | |
898 | update_current_target (); | |
c906108c | 899 | |
305436e0 PA |
900 | /* Finally close the target. Note we do this after unchaining, so |
901 | any target method calls from within the target_close | |
902 | implementation don't end up in T anymore. */ | |
460014f5 | 903 | target_close (t); |
305436e0 | 904 | |
c906108c SS |
905 | return 1; |
906 | } | |
907 | ||
aa76d38d | 908 | void |
460014f5 | 909 | pop_all_targets_above (enum strata above_stratum) |
aa76d38d | 910 | { |
87ab71f0 | 911 | while ((int) (current_target.to_stratum) > (int) above_stratum) |
aa76d38d | 912 | { |
aa76d38d PA |
913 | if (!unpush_target (target_stack)) |
914 | { | |
915 | fprintf_unfiltered (gdb_stderr, | |
916 | "pop_all_targets couldn't find target %s\n", | |
b52323fa | 917 | target_stack->to_shortname); |
aa76d38d PA |
918 | internal_error (__FILE__, __LINE__, |
919 | _("failed internal consistency check")); | |
920 | break; | |
921 | } | |
922 | } | |
923 | } | |
924 | ||
87ab71f0 | 925 | void |
460014f5 | 926 | pop_all_targets (void) |
87ab71f0 | 927 | { |
460014f5 | 928 | pop_all_targets_above (dummy_stratum); |
87ab71f0 PA |
929 | } |
930 | ||
c0edd9ed JK |
931 | /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */ |
932 | ||
933 | int | |
934 | target_is_pushed (struct target_ops *t) | |
935 | { | |
936 | struct target_ops **cur; | |
937 | ||
938 | /* Check magic number. If wrong, it probably means someone changed | |
939 | the struct definition, but not all the places that initialize one. */ | |
940 | if (t->to_magic != OPS_MAGIC) | |
941 | { | |
942 | fprintf_unfiltered (gdb_stderr, | |
943 | "Magic number of %s target struct wrong\n", | |
944 | t->to_shortname); | |
3e43a32a MS |
945 | internal_error (__FILE__, __LINE__, |
946 | _("failed internal consistency check")); | |
c0edd9ed JK |
947 | } |
948 | ||
949 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
950 | if (*cur == t) | |
951 | return 1; | |
952 | ||
953 | return 0; | |
954 | } | |
955 | ||
72f5cf0e | 956 | /* Using the objfile specified in OBJFILE, find the address for the |
9e35dae4 DJ |
957 | current thread's thread-local storage with offset OFFSET. */ |
958 | CORE_ADDR | |
959 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) | |
960 | { | |
961 | volatile CORE_ADDR addr = 0; | |
117de6a9 PA |
962 | struct target_ops *target; |
963 | ||
964 | for (target = current_target.beneath; | |
965 | target != NULL; | |
966 | target = target->beneath) | |
967 | { | |
968 | if (target->to_get_thread_local_address != NULL) | |
969 | break; | |
970 | } | |
9e35dae4 | 971 | |
117de6a9 | 972 | if (target != NULL |
f5656ead | 973 | && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ())) |
9e35dae4 DJ |
974 | { |
975 | ptid_t ptid = inferior_ptid; | |
976 | volatile struct gdb_exception ex; | |
977 | ||
978 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
979 | { | |
980 | CORE_ADDR lm_addr; | |
981 | ||
982 | /* Fetch the load module address for this objfile. */ | |
f5656ead | 983 | lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch (), |
9e35dae4 DJ |
984 | objfile); |
985 | /* If it's 0, throw the appropriate exception. */ | |
986 | if (lm_addr == 0) | |
987 | throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR, | |
988 | _("TLS load module not found")); | |
989 | ||
3e43a32a MS |
990 | addr = target->to_get_thread_local_address (target, ptid, |
991 | lm_addr, offset); | |
9e35dae4 DJ |
992 | } |
993 | /* If an error occurred, print TLS related messages here. Otherwise, | |
994 | throw the error to some higher catcher. */ | |
995 | if (ex.reason < 0) | |
996 | { | |
997 | int objfile_is_library = (objfile->flags & OBJF_SHARED); | |
998 | ||
999 | switch (ex.error) | |
1000 | { | |
1001 | case TLS_NO_LIBRARY_SUPPORT_ERROR: | |
3e43a32a MS |
1002 | error (_("Cannot find thread-local variables " |
1003 | "in this thread library.")); | |
9e35dae4 DJ |
1004 | break; |
1005 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: | |
1006 | if (objfile_is_library) | |
1007 | error (_("Cannot find shared library `%s' in dynamic" | |
4262abfb | 1008 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
1009 | else |
1010 | error (_("Cannot find executable file `%s' in dynamic" | |
4262abfb | 1011 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
1012 | break; |
1013 | case TLS_NOT_ALLOCATED_YET_ERROR: | |
1014 | if (objfile_is_library) | |
1015 | error (_("The inferior has not yet allocated storage for" | |
1016 | " thread-local variables in\n" | |
1017 | "the shared library `%s'\n" | |
1018 | "for %s"), | |
4262abfb | 1019 | objfile_name (objfile), target_pid_to_str (ptid)); |
9e35dae4 DJ |
1020 | else |
1021 | error (_("The inferior has not yet allocated storage for" | |
1022 | " thread-local variables in\n" | |
1023 | "the executable `%s'\n" | |
1024 | "for %s"), | |
4262abfb | 1025 | objfile_name (objfile), target_pid_to_str (ptid)); |
9e35dae4 DJ |
1026 | break; |
1027 | case TLS_GENERIC_ERROR: | |
1028 | if (objfile_is_library) | |
1029 | error (_("Cannot find thread-local storage for %s, " | |
1030 | "shared library %s:\n%s"), | |
1031 | target_pid_to_str (ptid), | |
4262abfb | 1032 | objfile_name (objfile), ex.message); |
9e35dae4 DJ |
1033 | else |
1034 | error (_("Cannot find thread-local storage for %s, " | |
1035 | "executable file %s:\n%s"), | |
1036 | target_pid_to_str (ptid), | |
4262abfb | 1037 | objfile_name (objfile), ex.message); |
9e35dae4 DJ |
1038 | break; |
1039 | default: | |
1040 | throw_exception (ex); | |
1041 | break; | |
1042 | } | |
1043 | } | |
1044 | } | |
1045 | /* It wouldn't be wrong here to try a gdbarch method, too; finding | |
1046 | TLS is an ABI-specific thing. But we don't do that yet. */ | |
1047 | else | |
1048 | error (_("Cannot find thread-local variables on this target")); | |
1049 | ||
1050 | return addr; | |
1051 | } | |
1052 | ||
6be7b56e | 1053 | const char * |
9b409511 | 1054 | target_xfer_status_to_string (enum target_xfer_status err) |
6be7b56e PA |
1055 | { |
1056 | #define CASE(X) case X: return #X | |
1057 | switch (err) | |
1058 | { | |
1059 | CASE(TARGET_XFER_E_IO); | |
1060 | CASE(TARGET_XFER_E_UNAVAILABLE); | |
1061 | default: | |
1062 | return "<unknown>"; | |
1063 | } | |
1064 | #undef CASE | |
1065 | }; | |
1066 | ||
1067 | ||
c906108c SS |
1068 | #undef MIN |
1069 | #define MIN(A, B) (((A) <= (B)) ? (A) : (B)) | |
1070 | ||
1071 | /* target_read_string -- read a null terminated string, up to LEN bytes, | |
1072 | from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful. | |
1073 | Set *STRING to a pointer to malloc'd memory containing the data; the caller | |
1074 | is responsible for freeing it. Return the number of bytes successfully | |
1075 | read. */ | |
1076 | ||
1077 | int | |
fba45db2 | 1078 | target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop) |
c906108c | 1079 | { |
c2e8b827 | 1080 | int tlen, offset, i; |
1b0ba102 | 1081 | gdb_byte buf[4]; |
c906108c SS |
1082 | int errcode = 0; |
1083 | char *buffer; | |
1084 | int buffer_allocated; | |
1085 | char *bufptr; | |
1086 | unsigned int nbytes_read = 0; | |
1087 | ||
6217bf3e MS |
1088 | gdb_assert (string); |
1089 | ||
c906108c SS |
1090 | /* Small for testing. */ |
1091 | buffer_allocated = 4; | |
1092 | buffer = xmalloc (buffer_allocated); | |
1093 | bufptr = buffer; | |
1094 | ||
c906108c SS |
1095 | while (len > 0) |
1096 | { | |
1097 | tlen = MIN (len, 4 - (memaddr & 3)); | |
1098 | offset = memaddr & 3; | |
1099 | ||
1b0ba102 | 1100 | errcode = target_read_memory (memaddr & ~3, buf, sizeof buf); |
c906108c SS |
1101 | if (errcode != 0) |
1102 | { | |
1103 | /* The transfer request might have crossed the boundary to an | |
c378eb4e | 1104 | unallocated region of memory. Retry the transfer, requesting |
c906108c SS |
1105 | a single byte. */ |
1106 | tlen = 1; | |
1107 | offset = 0; | |
b8eb5af0 | 1108 | errcode = target_read_memory (memaddr, buf, 1); |
c906108c SS |
1109 | if (errcode != 0) |
1110 | goto done; | |
1111 | } | |
1112 | ||
1113 | if (bufptr - buffer + tlen > buffer_allocated) | |
1114 | { | |
1115 | unsigned int bytes; | |
5d502164 | 1116 | |
c906108c SS |
1117 | bytes = bufptr - buffer; |
1118 | buffer_allocated *= 2; | |
1119 | buffer = xrealloc (buffer, buffer_allocated); | |
1120 | bufptr = buffer + bytes; | |
1121 | } | |
1122 | ||
1123 | for (i = 0; i < tlen; i++) | |
1124 | { | |
1125 | *bufptr++ = buf[i + offset]; | |
1126 | if (buf[i + offset] == '\000') | |
1127 | { | |
1128 | nbytes_read += i + 1; | |
1129 | goto done; | |
1130 | } | |
1131 | } | |
1132 | ||
1133 | memaddr += tlen; | |
1134 | len -= tlen; | |
1135 | nbytes_read += tlen; | |
1136 | } | |
c5aa993b | 1137 | done: |
6217bf3e | 1138 | *string = buffer; |
c906108c SS |
1139 | if (errnop != NULL) |
1140 | *errnop = errcode; | |
c906108c SS |
1141 | return nbytes_read; |
1142 | } | |
1143 | ||
07b82ea5 PA |
1144 | struct target_section_table * |
1145 | target_get_section_table (struct target_ops *target) | |
1146 | { | |
1147 | struct target_ops *t; | |
1148 | ||
1149 | if (targetdebug) | |
1150 | fprintf_unfiltered (gdb_stdlog, "target_get_section_table ()\n"); | |
1151 | ||
1152 | for (t = target; t != NULL; t = t->beneath) | |
1153 | if (t->to_get_section_table != NULL) | |
1154 | return (*t->to_get_section_table) (t); | |
1155 | ||
1156 | return NULL; | |
1157 | } | |
1158 | ||
8db32d44 | 1159 | /* Find a section containing ADDR. */ |
07b82ea5 | 1160 | |
0542c86d | 1161 | struct target_section * |
8db32d44 AC |
1162 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
1163 | { | |
07b82ea5 | 1164 | struct target_section_table *table = target_get_section_table (target); |
0542c86d | 1165 | struct target_section *secp; |
07b82ea5 PA |
1166 | |
1167 | if (table == NULL) | |
1168 | return NULL; | |
1169 | ||
1170 | for (secp = table->sections; secp < table->sections_end; secp++) | |
8db32d44 AC |
1171 | { |
1172 | if (addr >= secp->addr && addr < secp->endaddr) | |
1173 | return secp; | |
1174 | } | |
1175 | return NULL; | |
1176 | } | |
1177 | ||
e6e4e701 PA |
1178 | /* Read memory from the live target, even if currently inspecting a |
1179 | traceframe. The return is the same as that of target_read. */ | |
1180 | ||
9b409511 | 1181 | static enum target_xfer_status |
e6e4e701 | 1182 | target_read_live_memory (enum target_object object, |
9b409511 YQ |
1183 | ULONGEST memaddr, gdb_byte *myaddr, ULONGEST len, |
1184 | ULONGEST *xfered_len) | |
e6e4e701 | 1185 | { |
9b409511 | 1186 | enum target_xfer_status ret; |
e6e4e701 PA |
1187 | struct cleanup *cleanup; |
1188 | ||
1189 | /* Switch momentarily out of tfind mode so to access live memory. | |
1190 | Note that this must not clear global state, such as the frame | |
1191 | cache, which must still remain valid for the previous traceframe. | |
1192 | We may be _building_ the frame cache at this point. */ | |
1193 | cleanup = make_cleanup_restore_traceframe_number (); | |
1194 | set_traceframe_number (-1); | |
1195 | ||
9b409511 YQ |
1196 | ret = target_xfer_partial (current_target.beneath, object, NULL, |
1197 | myaddr, NULL, memaddr, len, xfered_len); | |
e6e4e701 PA |
1198 | |
1199 | do_cleanups (cleanup); | |
1200 | return ret; | |
1201 | } | |
1202 | ||
1203 | /* Using the set of read-only target sections of OPS, read live | |
1204 | read-only memory. Note that the actual reads start from the | |
5657161f PA |
1205 | top-most target again. |
1206 | ||
1207 | For interface/parameters/return description see target.h, | |
1208 | to_xfer_partial. */ | |
e6e4e701 | 1209 | |
9b409511 | 1210 | static enum target_xfer_status |
e6e4e701 PA |
1211 | memory_xfer_live_readonly_partial (struct target_ops *ops, |
1212 | enum target_object object, | |
1213 | gdb_byte *readbuf, ULONGEST memaddr, | |
9b409511 | 1214 | ULONGEST len, ULONGEST *xfered_len) |
e6e4e701 PA |
1215 | { |
1216 | struct target_section *secp; | |
1217 | struct target_section_table *table; | |
1218 | ||
1219 | secp = target_section_by_addr (ops, memaddr); | |
1220 | if (secp != NULL | |
2b2848e2 DE |
1221 | && (bfd_get_section_flags (secp->the_bfd_section->owner, |
1222 | secp->the_bfd_section) | |
e6e4e701 PA |
1223 | & SEC_READONLY)) |
1224 | { | |
1225 | struct target_section *p; | |
1226 | ULONGEST memend = memaddr + len; | |
1227 | ||
1228 | table = target_get_section_table (ops); | |
1229 | ||
1230 | for (p = table->sections; p < table->sections_end; p++) | |
1231 | { | |
1232 | if (memaddr >= p->addr) | |
1233 | { | |
1234 | if (memend <= p->endaddr) | |
1235 | { | |
1236 | /* Entire transfer is within this section. */ | |
1237 | return target_read_live_memory (object, memaddr, | |
9b409511 | 1238 | readbuf, len, xfered_len); |
e6e4e701 PA |
1239 | } |
1240 | else if (memaddr >= p->endaddr) | |
1241 | { | |
1242 | /* This section ends before the transfer starts. */ | |
1243 | continue; | |
1244 | } | |
1245 | else | |
1246 | { | |
1247 | /* This section overlaps the transfer. Just do half. */ | |
1248 | len = p->endaddr - memaddr; | |
1249 | return target_read_live_memory (object, memaddr, | |
9b409511 | 1250 | readbuf, len, xfered_len); |
e6e4e701 PA |
1251 | } |
1252 | } | |
1253 | } | |
1254 | } | |
1255 | ||
9b409511 | 1256 | return TARGET_XFER_EOF; |
e6e4e701 PA |
1257 | } |
1258 | ||
9f713294 YQ |
1259 | /* Read memory from more than one valid target. A core file, for |
1260 | instance, could have some of memory but delegate other bits to | |
1261 | the target below it. So, we must manually try all targets. */ | |
1262 | ||
9b409511 | 1263 | static enum target_xfer_status |
17fde6d0 | 1264 | raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf, |
9b409511 YQ |
1265 | const gdb_byte *writebuf, ULONGEST memaddr, LONGEST len, |
1266 | ULONGEST *xfered_len) | |
9f713294 | 1267 | { |
9b409511 | 1268 | enum target_xfer_status res; |
9f713294 YQ |
1269 | |
1270 | do | |
1271 | { | |
1272 | res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 YQ |
1273 | readbuf, writebuf, memaddr, len, |
1274 | xfered_len); | |
1275 | if (res == TARGET_XFER_OK) | |
9f713294 YQ |
1276 | break; |
1277 | ||
633785ff MM |
1278 | /* Stop if the target reports that the memory is not available. */ |
1279 | if (res == TARGET_XFER_E_UNAVAILABLE) | |
1280 | break; | |
1281 | ||
9f713294 YQ |
1282 | /* We want to continue past core files to executables, but not |
1283 | past a running target's memory. */ | |
1284 | if (ops->to_has_all_memory (ops)) | |
1285 | break; | |
1286 | ||
1287 | ops = ops->beneath; | |
1288 | } | |
1289 | while (ops != NULL); | |
1290 | ||
1291 | return res; | |
1292 | } | |
1293 | ||
7f79c47e DE |
1294 | /* Perform a partial memory transfer. |
1295 | For docs see target.h, to_xfer_partial. */ | |
cf7a04e8 | 1296 | |
9b409511 | 1297 | static enum target_xfer_status |
f0ba3972 | 1298 | memory_xfer_partial_1 (struct target_ops *ops, enum target_object object, |
17fde6d0 | 1299 | gdb_byte *readbuf, const gdb_byte *writebuf, ULONGEST memaddr, |
9b409511 | 1300 | ULONGEST len, ULONGEST *xfered_len) |
0779438d | 1301 | { |
9b409511 | 1302 | enum target_xfer_status res; |
cf7a04e8 DJ |
1303 | int reg_len; |
1304 | struct mem_region *region; | |
4e5d721f | 1305 | struct inferior *inf; |
cf7a04e8 | 1306 | |
07b82ea5 PA |
1307 | /* For accesses to unmapped overlay sections, read directly from |
1308 | files. Must do this first, as MEMADDR may need adjustment. */ | |
1309 | if (readbuf != NULL && overlay_debugging) | |
1310 | { | |
1311 | struct obj_section *section = find_pc_overlay (memaddr); | |
5d502164 | 1312 | |
07b82ea5 PA |
1313 | if (pc_in_unmapped_range (memaddr, section)) |
1314 | { | |
1315 | struct target_section_table *table | |
1316 | = target_get_section_table (ops); | |
1317 | const char *section_name = section->the_bfd_section->name; | |
5d502164 | 1318 | |
07b82ea5 PA |
1319 | memaddr = overlay_mapped_address (memaddr, section); |
1320 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 1321 | memaddr, len, xfered_len, |
07b82ea5 PA |
1322 | table->sections, |
1323 | table->sections_end, | |
1324 | section_name); | |
1325 | } | |
1326 | } | |
1327 | ||
1328 | /* Try the executable files, if "trust-readonly-sections" is set. */ | |
cf7a04e8 DJ |
1329 | if (readbuf != NULL && trust_readonly) |
1330 | { | |
0542c86d | 1331 | struct target_section *secp; |
07b82ea5 | 1332 | struct target_section_table *table; |
cf7a04e8 DJ |
1333 | |
1334 | secp = target_section_by_addr (ops, memaddr); | |
1335 | if (secp != NULL | |
2b2848e2 DE |
1336 | && (bfd_get_section_flags (secp->the_bfd_section->owner, |
1337 | secp->the_bfd_section) | |
cf7a04e8 | 1338 | & SEC_READONLY)) |
07b82ea5 PA |
1339 | { |
1340 | table = target_get_section_table (ops); | |
1341 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 1342 | memaddr, len, xfered_len, |
07b82ea5 PA |
1343 | table->sections, |
1344 | table->sections_end, | |
1345 | NULL); | |
1346 | } | |
98646950 UW |
1347 | } |
1348 | ||
e6e4e701 PA |
1349 | /* If reading unavailable memory in the context of traceframes, and |
1350 | this address falls within a read-only section, fallback to | |
1351 | reading from live memory. */ | |
1352 | if (readbuf != NULL && get_traceframe_number () != -1) | |
1353 | { | |
1354 | VEC(mem_range_s) *available; | |
1355 | ||
1356 | /* If we fail to get the set of available memory, then the | |
1357 | target does not support querying traceframe info, and so we | |
1358 | attempt reading from the traceframe anyway (assuming the | |
1359 | target implements the old QTro packet then). */ | |
1360 | if (traceframe_available_memory (&available, memaddr, len)) | |
1361 | { | |
1362 | struct cleanup *old_chain; | |
1363 | ||
1364 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available); | |
1365 | ||
1366 | if (VEC_empty (mem_range_s, available) | |
1367 | || VEC_index (mem_range_s, available, 0)->start != memaddr) | |
1368 | { | |
1369 | /* Don't read into the traceframe's available | |
1370 | memory. */ | |
1371 | if (!VEC_empty (mem_range_s, available)) | |
1372 | { | |
1373 | LONGEST oldlen = len; | |
1374 | ||
1375 | len = VEC_index (mem_range_s, available, 0)->start - memaddr; | |
1376 | gdb_assert (len <= oldlen); | |
1377 | } | |
1378 | ||
1379 | do_cleanups (old_chain); | |
1380 | ||
1381 | /* This goes through the topmost target again. */ | |
1382 | res = memory_xfer_live_readonly_partial (ops, object, | |
9b409511 YQ |
1383 | readbuf, memaddr, |
1384 | len, xfered_len); | |
1385 | if (res == TARGET_XFER_OK) | |
1386 | return TARGET_XFER_OK; | |
1387 | else | |
1388 | { | |
1389 | /* No use trying further, we know some memory starting | |
1390 | at MEMADDR isn't available. */ | |
1391 | *xfered_len = len; | |
1392 | return TARGET_XFER_E_UNAVAILABLE; | |
1393 | } | |
e6e4e701 PA |
1394 | } |
1395 | ||
1396 | /* Don't try to read more than how much is available, in | |
1397 | case the target implements the deprecated QTro packet to | |
1398 | cater for older GDBs (the target's knowledge of read-only | |
1399 | sections may be outdated by now). */ | |
1400 | len = VEC_index (mem_range_s, available, 0)->length; | |
1401 | ||
1402 | do_cleanups (old_chain); | |
1403 | } | |
1404 | } | |
1405 | ||
cf7a04e8 DJ |
1406 | /* Try GDB's internal data cache. */ |
1407 | region = lookup_mem_region (memaddr); | |
4b5752d0 VP |
1408 | /* region->hi == 0 means there's no upper bound. */ |
1409 | if (memaddr + len < region->hi || region->hi == 0) | |
cf7a04e8 DJ |
1410 | reg_len = len; |
1411 | else | |
1412 | reg_len = region->hi - memaddr; | |
1413 | ||
1414 | switch (region->attrib.mode) | |
1415 | { | |
1416 | case MEM_RO: | |
1417 | if (writebuf != NULL) | |
2ed4b548 | 1418 | return TARGET_XFER_E_IO; |
cf7a04e8 DJ |
1419 | break; |
1420 | ||
1421 | case MEM_WO: | |
1422 | if (readbuf != NULL) | |
2ed4b548 | 1423 | return TARGET_XFER_E_IO; |
cf7a04e8 | 1424 | break; |
a76d924d DJ |
1425 | |
1426 | case MEM_FLASH: | |
1427 | /* We only support writing to flash during "load" for now. */ | |
1428 | if (writebuf != NULL) | |
1429 | error (_("Writing to flash memory forbidden in this context")); | |
1430 | break; | |
4b5752d0 VP |
1431 | |
1432 | case MEM_NONE: | |
2ed4b548 | 1433 | return TARGET_XFER_E_IO; |
cf7a04e8 DJ |
1434 | } |
1435 | ||
6c95b8df PA |
1436 | if (!ptid_equal (inferior_ptid, null_ptid)) |
1437 | inf = find_inferior_pid (ptid_get_pid (inferior_ptid)); | |
1438 | else | |
1439 | inf = NULL; | |
4e5d721f DE |
1440 | |
1441 | if (inf != NULL | |
2f4d8875 PA |
1442 | /* The dcache reads whole cache lines; that doesn't play well |
1443 | with reading from a trace buffer, because reading outside of | |
1444 | the collected memory range fails. */ | |
1445 | && get_traceframe_number () == -1 | |
4e5d721f | 1446 | && (region->attrib.cache |
29453a14 YQ |
1447 | || (stack_cache_enabled_p () && object == TARGET_OBJECT_STACK_MEMORY) |
1448 | || (code_cache_enabled_p () && object == TARGET_OBJECT_CODE_MEMORY))) | |
cf7a04e8 | 1449 | { |
2a2f9fe4 | 1450 | DCACHE *dcache = target_dcache_get_or_init (); |
9b409511 | 1451 | int l; |
2a2f9fe4 | 1452 | |
cf7a04e8 | 1453 | if (readbuf != NULL) |
9b409511 | 1454 | l = dcache_xfer_memory (ops, dcache, memaddr, readbuf, reg_len, 0); |
cf7a04e8 DJ |
1455 | else |
1456 | /* FIXME drow/2006-08-09: If we're going to preserve const | |
1457 | correctness dcache_xfer_memory should take readbuf and | |
1458 | writebuf. */ | |
9b409511 | 1459 | l = dcache_xfer_memory (ops, dcache, memaddr, (void *) writebuf, |
cf7a04e8 | 1460 | reg_len, 1); |
9b409511 YQ |
1461 | if (l <= 0) |
1462 | return TARGET_XFER_E_IO; | |
cf7a04e8 | 1463 | else |
9b409511 YQ |
1464 | { |
1465 | *xfered_len = (ULONGEST) l; | |
1466 | return TARGET_XFER_OK; | |
1467 | } | |
cf7a04e8 DJ |
1468 | } |
1469 | ||
1470 | /* If none of those methods found the memory we wanted, fall back | |
1471 | to a target partial transfer. Normally a single call to | |
1472 | to_xfer_partial is enough; if it doesn't recognize an object | |
1473 | it will call the to_xfer_partial of the next target down. | |
1474 | But for memory this won't do. Memory is the only target | |
9b409511 YQ |
1475 | object which can be read from more than one valid target. |
1476 | A core file, for instance, could have some of memory but | |
1477 | delegate other bits to the target below it. So, we must | |
1478 | manually try all targets. */ | |
1479 | ||
1480 | res = raw_memory_xfer_partial (ops, readbuf, writebuf, memaddr, reg_len, | |
1481 | xfered_len); | |
cf7a04e8 | 1482 | |
41dcd03f DE |
1483 | /* Make sure the cache gets updated no matter what - if we are writing |
1484 | to the stack. Even if this write is not tagged as such, we still need | |
1485 | to update the cache. */ | |
1486 | ||
9b409511 | 1487 | if (res == TARGET_XFER_OK |
41dcd03f DE |
1488 | && inf != NULL |
1489 | && writebuf != NULL | |
f2de9785 | 1490 | && target_dcache_init_p () |
41dcd03f | 1491 | && !region->attrib.cache |
29453a14 YQ |
1492 | && ((stack_cache_enabled_p () && object != TARGET_OBJECT_STACK_MEMORY) |
1493 | || (code_cache_enabled_p () && object != TARGET_OBJECT_CODE_MEMORY))) | |
41dcd03f | 1494 | { |
f2de9785 | 1495 | DCACHE *dcache = target_dcache_get (); |
2a2f9fe4 | 1496 | |
9b409511 | 1497 | dcache_update (dcache, memaddr, (void *) writebuf, reg_len); |
41dcd03f DE |
1498 | } |
1499 | ||
cf7a04e8 DJ |
1500 | /* If we still haven't got anything, return the last error. We |
1501 | give up. */ | |
1502 | return res; | |
0779438d AC |
1503 | } |
1504 | ||
f0ba3972 PA |
1505 | /* Perform a partial memory transfer. For docs see target.h, |
1506 | to_xfer_partial. */ | |
1507 | ||
9b409511 | 1508 | static enum target_xfer_status |
f0ba3972 | 1509 | memory_xfer_partial (struct target_ops *ops, enum target_object object, |
9b409511 YQ |
1510 | gdb_byte *readbuf, const gdb_byte *writebuf, |
1511 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) | |
f0ba3972 | 1512 | { |
9b409511 | 1513 | enum target_xfer_status res; |
f0ba3972 PA |
1514 | |
1515 | /* Zero length requests are ok and require no work. */ | |
1516 | if (len == 0) | |
9b409511 | 1517 | return TARGET_XFER_EOF; |
f0ba3972 PA |
1518 | |
1519 | /* Fill in READBUF with breakpoint shadows, or WRITEBUF with | |
1520 | breakpoint insns, thus hiding out from higher layers whether | |
1521 | there are software breakpoints inserted in the code stream. */ | |
1522 | if (readbuf != NULL) | |
1523 | { | |
9b409511 YQ |
1524 | res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len, |
1525 | xfered_len); | |
f0ba3972 | 1526 | |
9b409511 | 1527 | if (res == TARGET_XFER_OK && !show_memory_breakpoints) |
f0ba3972 PA |
1528 | breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, res); |
1529 | } | |
1530 | else | |
1531 | { | |
1532 | void *buf; | |
1533 | struct cleanup *old_chain; | |
1534 | ||
67c059c2 AB |
1535 | /* A large write request is likely to be partially satisfied |
1536 | by memory_xfer_partial_1. We will continually malloc | |
1537 | and free a copy of the entire write request for breakpoint | |
1538 | shadow handling even though we only end up writing a small | |
1539 | subset of it. Cap writes to 4KB to mitigate this. */ | |
1540 | len = min (4096, len); | |
1541 | ||
f0ba3972 PA |
1542 | buf = xmalloc (len); |
1543 | old_chain = make_cleanup (xfree, buf); | |
1544 | memcpy (buf, writebuf, len); | |
1545 | ||
1546 | breakpoint_xfer_memory (NULL, buf, writebuf, memaddr, len); | |
9b409511 YQ |
1547 | res = memory_xfer_partial_1 (ops, object, NULL, buf, memaddr, len, |
1548 | xfered_len); | |
f0ba3972 PA |
1549 | |
1550 | do_cleanups (old_chain); | |
1551 | } | |
1552 | ||
1553 | return res; | |
1554 | } | |
1555 | ||
8defab1a DJ |
1556 | static void |
1557 | restore_show_memory_breakpoints (void *arg) | |
1558 | { | |
1559 | show_memory_breakpoints = (uintptr_t) arg; | |
1560 | } | |
1561 | ||
1562 | struct cleanup * | |
1563 | make_show_memory_breakpoints_cleanup (int show) | |
1564 | { | |
1565 | int current = show_memory_breakpoints; | |
8defab1a | 1566 | |
5d502164 | 1567 | show_memory_breakpoints = show; |
8defab1a DJ |
1568 | return make_cleanup (restore_show_memory_breakpoints, |
1569 | (void *) (uintptr_t) current); | |
1570 | } | |
1571 | ||
7f79c47e DE |
1572 | /* For docs see target.h, to_xfer_partial. */ |
1573 | ||
9b409511 | 1574 | enum target_xfer_status |
27394598 AC |
1575 | target_xfer_partial (struct target_ops *ops, |
1576 | enum target_object object, const char *annex, | |
4ac248ca | 1577 | gdb_byte *readbuf, const gdb_byte *writebuf, |
9b409511 YQ |
1578 | ULONGEST offset, ULONGEST len, |
1579 | ULONGEST *xfered_len) | |
27394598 | 1580 | { |
9b409511 | 1581 | enum target_xfer_status retval; |
27394598 AC |
1582 | |
1583 | gdb_assert (ops->to_xfer_partial != NULL); | |
cf7a04e8 | 1584 | |
ce6d0892 YQ |
1585 | /* Transfer is done when LEN is zero. */ |
1586 | if (len == 0) | |
9b409511 | 1587 | return TARGET_XFER_EOF; |
ce6d0892 | 1588 | |
d914c394 SS |
1589 | if (writebuf && !may_write_memory) |
1590 | error (_("Writing to memory is not allowed (addr %s, len %s)"), | |
1591 | core_addr_to_string_nz (offset), plongest (len)); | |
1592 | ||
9b409511 YQ |
1593 | *xfered_len = 0; |
1594 | ||
cf7a04e8 DJ |
1595 | /* If this is a memory transfer, let the memory-specific code |
1596 | have a look at it instead. Memory transfers are more | |
1597 | complicated. */ | |
29453a14 YQ |
1598 | if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY |
1599 | || object == TARGET_OBJECT_CODE_MEMORY) | |
4e5d721f | 1600 | retval = memory_xfer_partial (ops, object, readbuf, |
9b409511 | 1601 | writebuf, offset, len, xfered_len); |
9f713294 | 1602 | else if (object == TARGET_OBJECT_RAW_MEMORY) |
cf7a04e8 | 1603 | { |
9f713294 | 1604 | /* Request the normal memory object from other layers. */ |
9b409511 YQ |
1605 | retval = raw_memory_xfer_partial (ops, readbuf, writebuf, offset, len, |
1606 | xfered_len); | |
cf7a04e8 | 1607 | } |
9f713294 YQ |
1608 | else |
1609 | retval = ops->to_xfer_partial (ops, object, annex, readbuf, | |
9b409511 | 1610 | writebuf, offset, len, xfered_len); |
cf7a04e8 | 1611 | |
27394598 AC |
1612 | if (targetdebug) |
1613 | { | |
1614 | const unsigned char *myaddr = NULL; | |
1615 | ||
1616 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a | 1617 | "%s:target_xfer_partial " |
9b409511 | 1618 | "(%d, %s, %s, %s, %s, %s) = %d, %s", |
27394598 AC |
1619 | ops->to_shortname, |
1620 | (int) object, | |
1621 | (annex ? annex : "(null)"), | |
53b71562 JB |
1622 | host_address_to_string (readbuf), |
1623 | host_address_to_string (writebuf), | |
0b1553bc | 1624 | core_addr_to_string_nz (offset), |
9b409511 YQ |
1625 | pulongest (len), retval, |
1626 | pulongest (*xfered_len)); | |
27394598 AC |
1627 | |
1628 | if (readbuf) | |
1629 | myaddr = readbuf; | |
1630 | if (writebuf) | |
1631 | myaddr = writebuf; | |
9b409511 | 1632 | if (retval == TARGET_XFER_OK && myaddr != NULL) |
27394598 AC |
1633 | { |
1634 | int i; | |
2bc416ba | 1635 | |
27394598 | 1636 | fputs_unfiltered (", bytes =", gdb_stdlog); |
9b409511 | 1637 | for (i = 0; i < *xfered_len; i++) |
27394598 | 1638 | { |
53b71562 | 1639 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1640 | { |
1641 | if (targetdebug < 2 && i > 0) | |
1642 | { | |
1643 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
1644 | break; | |
1645 | } | |
1646 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1647 | } | |
2bc416ba | 1648 | |
27394598 AC |
1649 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
1650 | } | |
1651 | } | |
2bc416ba | 1652 | |
27394598 AC |
1653 | fputc_unfiltered ('\n', gdb_stdlog); |
1654 | } | |
9b409511 YQ |
1655 | |
1656 | /* Check implementations of to_xfer_partial update *XFERED_LEN | |
1657 | properly. Do assertion after printing debug messages, so that we | |
1658 | can find more clues on assertion failure from debugging messages. */ | |
1659 | if (retval == TARGET_XFER_OK || retval == TARGET_XFER_E_UNAVAILABLE) | |
1660 | gdb_assert (*xfered_len > 0); | |
1661 | ||
27394598 AC |
1662 | return retval; |
1663 | } | |
1664 | ||
578d3588 PA |
1665 | /* Read LEN bytes of target memory at address MEMADDR, placing the |
1666 | results in GDB's memory at MYADDR. Returns either 0 for success or | |
9b409511 | 1667 | TARGET_XFER_E_IO if any error occurs. |
c906108c SS |
1668 | |
1669 | If an error occurs, no guarantee is made about the contents of the data at | |
1670 | MYADDR. In particular, the caller should not depend upon partial reads | |
1671 | filling the buffer with good data. There is no way for the caller to know | |
1672 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 | 1673 | deal with partial reads should call target_read (which will retry until |
c378eb4e | 1674 | it makes no progress, and then return how much was transferred). */ |
c906108c SS |
1675 | |
1676 | int | |
1b162304 | 1677 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
c906108c | 1678 | { |
c35b1492 PA |
1679 | /* Dispatch to the topmost target, not the flattened current_target. |
1680 | Memory accesses check target->to_has_(all_)memory, and the | |
1681 | flattened target doesn't inherit those. */ | |
1682 | if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1683 | myaddr, memaddr, len) == len) |
1684 | return 0; | |
0779438d | 1685 | else |
578d3588 | 1686 | return TARGET_XFER_E_IO; |
c906108c SS |
1687 | } |
1688 | ||
aee4bf85 PA |
1689 | /* Like target_read_memory, but specify explicitly that this is a read |
1690 | from the target's raw memory. That is, this read bypasses the | |
1691 | dcache, breakpoint shadowing, etc. */ | |
1692 | ||
1693 | int | |
1694 | target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1695 | { | |
1696 | /* See comment in target_read_memory about why the request starts at | |
1697 | current_target.beneath. */ | |
1698 | if (target_read (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, | |
1699 | myaddr, memaddr, len) == len) | |
1700 | return 0; | |
1701 | else | |
1702 | return TARGET_XFER_E_IO; | |
1703 | } | |
1704 | ||
4e5d721f DE |
1705 | /* Like target_read_memory, but specify explicitly that this is a read from |
1706 | the target's stack. This may trigger different cache behavior. */ | |
1707 | ||
1708 | int | |
45aa4659 | 1709 | target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
4e5d721f | 1710 | { |
aee4bf85 PA |
1711 | /* See comment in target_read_memory about why the request starts at |
1712 | current_target.beneath. */ | |
4e5d721f DE |
1713 | if (target_read (current_target.beneath, TARGET_OBJECT_STACK_MEMORY, NULL, |
1714 | myaddr, memaddr, len) == len) | |
1715 | return 0; | |
1716 | else | |
578d3588 | 1717 | return TARGET_XFER_E_IO; |
4e5d721f DE |
1718 | } |
1719 | ||
29453a14 YQ |
1720 | /* Like target_read_memory, but specify explicitly that this is a read from |
1721 | the target's code. This may trigger different cache behavior. */ | |
1722 | ||
1723 | int | |
1724 | target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1725 | { | |
aee4bf85 PA |
1726 | /* See comment in target_read_memory about why the request starts at |
1727 | current_target.beneath. */ | |
29453a14 YQ |
1728 | if (target_read (current_target.beneath, TARGET_OBJECT_CODE_MEMORY, NULL, |
1729 | myaddr, memaddr, len) == len) | |
1730 | return 0; | |
1731 | else | |
1732 | return TARGET_XFER_E_IO; | |
1733 | } | |
1734 | ||
7f79c47e | 1735 | /* Write LEN bytes from MYADDR to target memory at address MEMADDR. |
9b409511 | 1736 | Returns either 0 for success or TARGET_XFER_E_IO if any |
578d3588 PA |
1737 | error occurs. If an error occurs, no guarantee is made about how |
1738 | much data got written. Callers that can deal with partial writes | |
1739 | should call target_write. */ | |
7f79c47e | 1740 | |
c906108c | 1741 | int |
45aa4659 | 1742 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
c906108c | 1743 | { |
aee4bf85 PA |
1744 | /* See comment in target_read_memory about why the request starts at |
1745 | current_target.beneath. */ | |
c35b1492 | 1746 | if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, |
cf7a04e8 DJ |
1747 | myaddr, memaddr, len) == len) |
1748 | return 0; | |
0779438d | 1749 | else |
578d3588 | 1750 | return TARGET_XFER_E_IO; |
c906108c | 1751 | } |
c5aa993b | 1752 | |
f0ba3972 | 1753 | /* Write LEN bytes from MYADDR to target raw memory at address |
9b409511 | 1754 | MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO |
578d3588 PA |
1755 | if any error occurs. If an error occurs, no guarantee is made |
1756 | about how much data got written. Callers that can deal with | |
1757 | partial writes should call target_write. */ | |
f0ba3972 PA |
1758 | |
1759 | int | |
45aa4659 | 1760 | target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
f0ba3972 | 1761 | { |
aee4bf85 PA |
1762 | /* See comment in target_read_memory about why the request starts at |
1763 | current_target.beneath. */ | |
f0ba3972 PA |
1764 | if (target_write (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, |
1765 | myaddr, memaddr, len) == len) | |
1766 | return 0; | |
1767 | else | |
578d3588 | 1768 | return TARGET_XFER_E_IO; |
f0ba3972 PA |
1769 | } |
1770 | ||
fd79ecee DJ |
1771 | /* Fetch the target's memory map. */ |
1772 | ||
1773 | VEC(mem_region_s) * | |
1774 | target_memory_map (void) | |
1775 | { | |
1776 | VEC(mem_region_s) *result; | |
1777 | struct mem_region *last_one, *this_one; | |
1778 | int ix; | |
1779 | struct target_ops *t; | |
1780 | ||
1781 | if (targetdebug) | |
1782 | fprintf_unfiltered (gdb_stdlog, "target_memory_map ()\n"); | |
1783 | ||
1784 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1785 | if (t->to_memory_map != NULL) | |
1786 | break; | |
1787 | ||
1788 | if (t == NULL) | |
1789 | return NULL; | |
1790 | ||
1791 | result = t->to_memory_map (t); | |
1792 | if (result == NULL) | |
1793 | return NULL; | |
1794 | ||
1795 | qsort (VEC_address (mem_region_s, result), | |
1796 | VEC_length (mem_region_s, result), | |
1797 | sizeof (struct mem_region), mem_region_cmp); | |
1798 | ||
1799 | /* Check that regions do not overlap. Simultaneously assign | |
1800 | a numbering for the "mem" commands to use to refer to | |
1801 | each region. */ | |
1802 | last_one = NULL; | |
1803 | for (ix = 0; VEC_iterate (mem_region_s, result, ix, this_one); ix++) | |
1804 | { | |
1805 | this_one->number = ix; | |
1806 | ||
1807 | if (last_one && last_one->hi > this_one->lo) | |
1808 | { | |
1809 | warning (_("Overlapping regions in memory map: ignoring")); | |
1810 | VEC_free (mem_region_s, result); | |
1811 | return NULL; | |
1812 | } | |
1813 | last_one = this_one; | |
1814 | } | |
1815 | ||
1816 | return result; | |
1817 | } | |
1818 | ||
a76d924d DJ |
1819 | void |
1820 | target_flash_erase (ULONGEST address, LONGEST length) | |
1821 | { | |
1822 | struct target_ops *t; | |
1823 | ||
1824 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1825 | if (t->to_flash_erase != NULL) | |
5d502164 MS |
1826 | { |
1827 | if (targetdebug) | |
1828 | fprintf_unfiltered (gdb_stdlog, "target_flash_erase (%s, %s)\n", | |
1829 | hex_string (address), phex (length, 0)); | |
1830 | t->to_flash_erase (t, address, length); | |
1831 | return; | |
1832 | } | |
a76d924d DJ |
1833 | |
1834 | tcomplain (); | |
1835 | } | |
1836 | ||
1837 | void | |
1838 | target_flash_done (void) | |
1839 | { | |
1840 | struct target_ops *t; | |
1841 | ||
1842 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1843 | if (t->to_flash_done != NULL) | |
5d502164 MS |
1844 | { |
1845 | if (targetdebug) | |
1846 | fprintf_unfiltered (gdb_stdlog, "target_flash_done\n"); | |
1847 | t->to_flash_done (t); | |
1848 | return; | |
1849 | } | |
a76d924d DJ |
1850 | |
1851 | tcomplain (); | |
1852 | } | |
1853 | ||
920d2a44 AC |
1854 | static void |
1855 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1856 | struct cmd_list_element *c, const char *value) | |
1857 | { | |
3e43a32a MS |
1858 | fprintf_filtered (file, |
1859 | _("Mode for reading from readonly sections is %s.\n"), | |
920d2a44 AC |
1860 | value); |
1861 | } | |
3a11626d | 1862 | |
1e3ff5ad AC |
1863 | /* More generic transfers. */ |
1864 | ||
9b409511 | 1865 | static enum target_xfer_status |
8aa91c1e | 1866 | default_xfer_partial (struct target_ops *ops, enum target_object object, |
2bc416ba | 1867 | const char *annex, gdb_byte *readbuf, |
9b409511 YQ |
1868 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, |
1869 | ULONGEST *xfered_len) | |
0088c768 AC |
1870 | { |
1871 | if (object == TARGET_OBJECT_MEMORY | |
c8e73a31 AC |
1872 | && ops->deprecated_xfer_memory != NULL) |
1873 | /* If available, fall back to the target's | |
1874 | "deprecated_xfer_memory" method. */ | |
0088c768 | 1875 | { |
4b8a223f | 1876 | int xfered = -1; |
5d502164 | 1877 | |
0088c768 | 1878 | errno = 0; |
4b8a223f AC |
1879 | if (writebuf != NULL) |
1880 | { | |
1881 | void *buffer = xmalloc (len); | |
1882 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |
5d502164 | 1883 | |
4b8a223f | 1884 | memcpy (buffer, writebuf, len); |
c8e73a31 AC |
1885 | xfered = ops->deprecated_xfer_memory (offset, buffer, len, |
1886 | 1/*write*/, NULL, ops); | |
4b8a223f AC |
1887 | do_cleanups (cleanup); |
1888 | } | |
1889 | if (readbuf != NULL) | |
244e85c8 MS |
1890 | xfered = ops->deprecated_xfer_memory (offset, readbuf, len, |
1891 | 0/*read*/, NULL, ops); | |
0088c768 | 1892 | if (xfered > 0) |
9b409511 YQ |
1893 | { |
1894 | *xfered_len = (ULONGEST) xfered; | |
1895 | return TARGET_XFER_E_IO; | |
1896 | } | |
0088c768 | 1897 | else if (xfered == 0 && errno == 0) |
c8e73a31 AC |
1898 | /* "deprecated_xfer_memory" uses 0, cross checked against |
1899 | ERRNO as one indication of an error. */ | |
9b409511 | 1900 | return TARGET_XFER_EOF; |
0088c768 | 1901 | else |
9b409511 | 1902 | return TARGET_XFER_E_IO; |
0088c768 | 1903 | } |
0088c768 | 1904 | else |
6b84065d TT |
1905 | { |
1906 | gdb_assert (ops->beneath != NULL); | |
1907 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, | |
1908 | readbuf, writebuf, offset, len, | |
1909 | xfered_len); | |
1910 | } | |
0088c768 AC |
1911 | } |
1912 | ||
7f79c47e | 1913 | /* Target vector read/write partial wrapper functions. */ |
0088c768 | 1914 | |
9b409511 | 1915 | static enum target_xfer_status |
1e3ff5ad AC |
1916 | target_read_partial (struct target_ops *ops, |
1917 | enum target_object object, | |
1b0ba102 | 1918 | const char *annex, gdb_byte *buf, |
9b409511 YQ |
1919 | ULONGEST offset, ULONGEST len, |
1920 | ULONGEST *xfered_len) | |
1e3ff5ad | 1921 | { |
9b409511 YQ |
1922 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len, |
1923 | xfered_len); | |
1e3ff5ad AC |
1924 | } |
1925 | ||
8a55ffb0 | 1926 | static enum target_xfer_status |
1e3ff5ad AC |
1927 | target_write_partial (struct target_ops *ops, |
1928 | enum target_object object, | |
1b0ba102 | 1929 | const char *annex, const gdb_byte *buf, |
9b409511 | 1930 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len) |
1e3ff5ad | 1931 | { |
9b409511 YQ |
1932 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len, |
1933 | xfered_len); | |
1e3ff5ad AC |
1934 | } |
1935 | ||
1936 | /* Wrappers to perform the full transfer. */ | |
7f79c47e DE |
1937 | |
1938 | /* For docs on target_read see target.h. */ | |
1939 | ||
1e3ff5ad AC |
1940 | LONGEST |
1941 | target_read (struct target_ops *ops, | |
1942 | enum target_object object, | |
1b0ba102 | 1943 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1944 | ULONGEST offset, LONGEST len) |
1945 | { | |
1946 | LONGEST xfered = 0; | |
5d502164 | 1947 | |
1e3ff5ad AC |
1948 | while (xfered < len) |
1949 | { | |
9b409511 YQ |
1950 | ULONGEST xfered_len; |
1951 | enum target_xfer_status status; | |
1952 | ||
1953 | status = target_read_partial (ops, object, annex, | |
1954 | (gdb_byte *) buf + xfered, | |
1955 | offset + xfered, len - xfered, | |
1956 | &xfered_len); | |
5d502164 | 1957 | |
1e3ff5ad | 1958 | /* Call an observer, notifying them of the xfer progress? */ |
9b409511 | 1959 | if (status == TARGET_XFER_EOF) |
13547ab6 | 1960 | return xfered; |
9b409511 YQ |
1961 | else if (status == TARGET_XFER_OK) |
1962 | { | |
1963 | xfered += xfered_len; | |
1964 | QUIT; | |
1965 | } | |
1966 | else | |
0088c768 | 1967 | return -1; |
9b409511 | 1968 | |
1e3ff5ad AC |
1969 | } |
1970 | return len; | |
1971 | } | |
1972 | ||
f1a507a1 JB |
1973 | /* Assuming that the entire [begin, end) range of memory cannot be |
1974 | read, try to read whatever subrange is possible to read. | |
1975 | ||
1976 | The function returns, in RESULT, either zero or one memory block. | |
1977 | If there's a readable subrange at the beginning, it is completely | |
1978 | read and returned. Any further readable subrange will not be read. | |
1979 | Otherwise, if there's a readable subrange at the end, it will be | |
1980 | completely read and returned. Any readable subranges before it | |
1981 | (obviously, not starting at the beginning), will be ignored. In | |
1982 | other cases -- either no readable subrange, or readable subrange(s) | |
1983 | that is neither at the beginning, or end, nothing is returned. | |
1984 | ||
1985 | The purpose of this function is to handle a read across a boundary | |
1986 | of accessible memory in a case when memory map is not available. | |
1987 | The above restrictions are fine for this case, but will give | |
1988 | incorrect results if the memory is 'patchy'. However, supporting | |
1989 | 'patchy' memory would require trying to read every single byte, | |
1990 | and it seems unacceptable solution. Explicit memory map is | |
1991 | recommended for this case -- and target_read_memory_robust will | |
1992 | take care of reading multiple ranges then. */ | |
8dedea02 VP |
1993 | |
1994 | static void | |
3e43a32a MS |
1995 | read_whatever_is_readable (struct target_ops *ops, |
1996 | ULONGEST begin, ULONGEST end, | |
8dedea02 | 1997 | VEC(memory_read_result_s) **result) |
d5086790 | 1998 | { |
f1a507a1 | 1999 | gdb_byte *buf = xmalloc (end - begin); |
8dedea02 VP |
2000 | ULONGEST current_begin = begin; |
2001 | ULONGEST current_end = end; | |
2002 | int forward; | |
2003 | memory_read_result_s r; | |
9b409511 | 2004 | ULONGEST xfered_len; |
8dedea02 VP |
2005 | |
2006 | /* If we previously failed to read 1 byte, nothing can be done here. */ | |
2007 | if (end - begin <= 1) | |
13b3fd9b MS |
2008 | { |
2009 | xfree (buf); | |
2010 | return; | |
2011 | } | |
8dedea02 VP |
2012 | |
2013 | /* Check that either first or the last byte is readable, and give up | |
c378eb4e | 2014 | if not. This heuristic is meant to permit reading accessible memory |
8dedea02 VP |
2015 | at the boundary of accessible region. */ |
2016 | if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 | 2017 | buf, begin, 1, &xfered_len) == TARGET_XFER_OK) |
8dedea02 VP |
2018 | { |
2019 | forward = 1; | |
2020 | ++current_begin; | |
2021 | } | |
2022 | else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 YQ |
2023 | buf + (end-begin) - 1, end - 1, 1, |
2024 | &xfered_len) == TARGET_XFER_OK) | |
8dedea02 VP |
2025 | { |
2026 | forward = 0; | |
2027 | --current_end; | |
2028 | } | |
2029 | else | |
2030 | { | |
13b3fd9b | 2031 | xfree (buf); |
8dedea02 VP |
2032 | return; |
2033 | } | |
2034 | ||
2035 | /* Loop invariant is that the [current_begin, current_end) was previously | |
2036 | found to be not readable as a whole. | |
2037 | ||
2038 | Note loop condition -- if the range has 1 byte, we can't divide the range | |
2039 | so there's no point trying further. */ | |
2040 | while (current_end - current_begin > 1) | |
2041 | { | |
2042 | ULONGEST first_half_begin, first_half_end; | |
2043 | ULONGEST second_half_begin, second_half_end; | |
2044 | LONGEST xfer; | |
8dedea02 | 2045 | ULONGEST middle = current_begin + (current_end - current_begin)/2; |
f1a507a1 | 2046 | |
8dedea02 VP |
2047 | if (forward) |
2048 | { | |
2049 | first_half_begin = current_begin; | |
2050 | first_half_end = middle; | |
2051 | second_half_begin = middle; | |
2052 | second_half_end = current_end; | |
2053 | } | |
2054 | else | |
2055 | { | |
2056 | first_half_begin = middle; | |
2057 | first_half_end = current_end; | |
2058 | second_half_begin = current_begin; | |
2059 | second_half_end = middle; | |
2060 | } | |
2061 | ||
2062 | xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2063 | buf + (first_half_begin - begin), | |
2064 | first_half_begin, | |
2065 | first_half_end - first_half_begin); | |
2066 | ||
2067 | if (xfer == first_half_end - first_half_begin) | |
2068 | { | |
c378eb4e | 2069 | /* This half reads up fine. So, the error must be in the |
3e43a32a | 2070 | other half. */ |
8dedea02 VP |
2071 | current_begin = second_half_begin; |
2072 | current_end = second_half_end; | |
2073 | } | |
2074 | else | |
2075 | { | |
c378eb4e MS |
2076 | /* This half is not readable. Because we've tried one byte, we |
2077 | know some part of this half if actually redable. Go to the next | |
8dedea02 VP |
2078 | iteration to divide again and try to read. |
2079 | ||
2080 | We don't handle the other half, because this function only tries | |
2081 | to read a single readable subrange. */ | |
2082 | current_begin = first_half_begin; | |
2083 | current_end = first_half_end; | |
2084 | } | |
2085 | } | |
2086 | ||
2087 | if (forward) | |
2088 | { | |
2089 | /* The [begin, current_begin) range has been read. */ | |
2090 | r.begin = begin; | |
2091 | r.end = current_begin; | |
2092 | r.data = buf; | |
2093 | } | |
2094 | else | |
2095 | { | |
2096 | /* The [current_end, end) range has been read. */ | |
2097 | LONGEST rlen = end - current_end; | |
f1a507a1 | 2098 | |
8dedea02 VP |
2099 | r.data = xmalloc (rlen); |
2100 | memcpy (r.data, buf + current_end - begin, rlen); | |
2101 | r.begin = current_end; | |
2102 | r.end = end; | |
2103 | xfree (buf); | |
2104 | } | |
2105 | VEC_safe_push(memory_read_result_s, (*result), &r); | |
2106 | } | |
2107 | ||
2108 | void | |
2109 | free_memory_read_result_vector (void *x) | |
2110 | { | |
2111 | VEC(memory_read_result_s) *v = x; | |
2112 | memory_read_result_s *current; | |
2113 | int ix; | |
2114 | ||
2115 | for (ix = 0; VEC_iterate (memory_read_result_s, v, ix, current); ++ix) | |
2116 | { | |
2117 | xfree (current->data); | |
2118 | } | |
2119 | VEC_free (memory_read_result_s, v); | |
2120 | } | |
2121 | ||
2122 | VEC(memory_read_result_s) * | |
2123 | read_memory_robust (struct target_ops *ops, ULONGEST offset, LONGEST len) | |
2124 | { | |
2125 | VEC(memory_read_result_s) *result = 0; | |
2126 | ||
2127 | LONGEST xfered = 0; | |
d5086790 VP |
2128 | while (xfered < len) |
2129 | { | |
8dedea02 VP |
2130 | struct mem_region *region = lookup_mem_region (offset + xfered); |
2131 | LONGEST rlen; | |
5d502164 | 2132 | |
8dedea02 VP |
2133 | /* If there is no explicit region, a fake one should be created. */ |
2134 | gdb_assert (region); | |
2135 | ||
2136 | if (region->hi == 0) | |
2137 | rlen = len - xfered; | |
2138 | else | |
2139 | rlen = region->hi - offset; | |
2140 | ||
2141 | if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO) | |
d5086790 | 2142 | { |
c378eb4e | 2143 | /* Cannot read this region. Note that we can end up here only |
8dedea02 VP |
2144 | if the region is explicitly marked inaccessible, or |
2145 | 'inaccessible-by-default' is in effect. */ | |
2146 | xfered += rlen; | |
2147 | } | |
2148 | else | |
2149 | { | |
2150 | LONGEST to_read = min (len - xfered, rlen); | |
2151 | gdb_byte *buffer = (gdb_byte *)xmalloc (to_read); | |
2152 | ||
2153 | LONGEST xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2154 | (gdb_byte *) buffer, | |
2155 | offset + xfered, to_read); | |
2156 | /* Call an observer, notifying them of the xfer progress? */ | |
d5086790 | 2157 | if (xfer <= 0) |
d5086790 | 2158 | { |
c378eb4e | 2159 | /* Got an error reading full chunk. See if maybe we can read |
8dedea02 VP |
2160 | some subrange. */ |
2161 | xfree (buffer); | |
3e43a32a MS |
2162 | read_whatever_is_readable (ops, offset + xfered, |
2163 | offset + xfered + to_read, &result); | |
8dedea02 | 2164 | xfered += to_read; |
d5086790 | 2165 | } |
8dedea02 VP |
2166 | else |
2167 | { | |
2168 | struct memory_read_result r; | |
2169 | r.data = buffer; | |
2170 | r.begin = offset + xfered; | |
2171 | r.end = r.begin + xfer; | |
2172 | VEC_safe_push (memory_read_result_s, result, &r); | |
2173 | xfered += xfer; | |
2174 | } | |
2175 | QUIT; | |
d5086790 | 2176 | } |
d5086790 | 2177 | } |
8dedea02 | 2178 | return result; |
d5086790 VP |
2179 | } |
2180 | ||
8dedea02 | 2181 | |
cf7a04e8 DJ |
2182 | /* An alternative to target_write with progress callbacks. */ |
2183 | ||
1e3ff5ad | 2184 | LONGEST |
cf7a04e8 DJ |
2185 | target_write_with_progress (struct target_ops *ops, |
2186 | enum target_object object, | |
2187 | const char *annex, const gdb_byte *buf, | |
2188 | ULONGEST offset, LONGEST len, | |
2189 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad AC |
2190 | { |
2191 | LONGEST xfered = 0; | |
a76d924d DJ |
2192 | |
2193 | /* Give the progress callback a chance to set up. */ | |
2194 | if (progress) | |
2195 | (*progress) (0, baton); | |
2196 | ||
1e3ff5ad AC |
2197 | while (xfered < len) |
2198 | { | |
9b409511 YQ |
2199 | ULONGEST xfered_len; |
2200 | enum target_xfer_status status; | |
2201 | ||
2202 | status = target_write_partial (ops, object, annex, | |
2203 | (gdb_byte *) buf + xfered, | |
2204 | offset + xfered, len - xfered, | |
2205 | &xfered_len); | |
cf7a04e8 | 2206 | |
9b409511 | 2207 | if (status == TARGET_XFER_EOF) |
13547ab6 | 2208 | return xfered; |
9b409511 | 2209 | if (TARGET_XFER_STATUS_ERROR_P (status)) |
0088c768 | 2210 | return -1; |
cf7a04e8 | 2211 | |
9b409511 | 2212 | gdb_assert (status == TARGET_XFER_OK); |
cf7a04e8 | 2213 | if (progress) |
9b409511 | 2214 | (*progress) (xfered_len, baton); |
cf7a04e8 | 2215 | |
9b409511 | 2216 | xfered += xfered_len; |
1e3ff5ad AC |
2217 | QUIT; |
2218 | } | |
2219 | return len; | |
2220 | } | |
2221 | ||
7f79c47e DE |
2222 | /* For docs on target_write see target.h. */ |
2223 | ||
cf7a04e8 DJ |
2224 | LONGEST |
2225 | target_write (struct target_ops *ops, | |
2226 | enum target_object object, | |
2227 | const char *annex, const gdb_byte *buf, | |
2228 | ULONGEST offset, LONGEST len) | |
2229 | { | |
2230 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
2231 | NULL, NULL); | |
2232 | } | |
2233 | ||
159f81f3 DJ |
2234 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
2235 | the size of the transferred data. PADDING additional bytes are | |
2236 | available in *BUF_P. This is a helper function for | |
2237 | target_read_alloc; see the declaration of that function for more | |
2238 | information. */ | |
13547ab6 | 2239 | |
159f81f3 DJ |
2240 | static LONGEST |
2241 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, | |
2242 | const char *annex, gdb_byte **buf_p, int padding) | |
13547ab6 DJ |
2243 | { |
2244 | size_t buf_alloc, buf_pos; | |
2245 | gdb_byte *buf; | |
13547ab6 DJ |
2246 | |
2247 | /* This function does not have a length parameter; it reads the | |
2248 | entire OBJECT). Also, it doesn't support objects fetched partly | |
2249 | from one target and partly from another (in a different stratum, | |
2250 | e.g. a core file and an executable). Both reasons make it | |
2251 | unsuitable for reading memory. */ | |
2252 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
2253 | ||
2254 | /* Start by reading up to 4K at a time. The target will throttle | |
2255 | this number down if necessary. */ | |
2256 | buf_alloc = 4096; | |
2257 | buf = xmalloc (buf_alloc); | |
2258 | buf_pos = 0; | |
2259 | while (1) | |
2260 | { | |
9b409511 YQ |
2261 | ULONGEST xfered_len; |
2262 | enum target_xfer_status status; | |
2263 | ||
2264 | status = target_read_partial (ops, object, annex, &buf[buf_pos], | |
2265 | buf_pos, buf_alloc - buf_pos - padding, | |
2266 | &xfered_len); | |
2267 | ||
2268 | if (status == TARGET_XFER_EOF) | |
13547ab6 DJ |
2269 | { |
2270 | /* Read all there was. */ | |
2271 | if (buf_pos == 0) | |
2272 | xfree (buf); | |
2273 | else | |
2274 | *buf_p = buf; | |
2275 | return buf_pos; | |
2276 | } | |
9b409511 YQ |
2277 | else if (status != TARGET_XFER_OK) |
2278 | { | |
2279 | /* An error occurred. */ | |
2280 | xfree (buf); | |
2281 | return TARGET_XFER_E_IO; | |
2282 | } | |
13547ab6 | 2283 | |
9b409511 | 2284 | buf_pos += xfered_len; |
13547ab6 DJ |
2285 | |
2286 | /* If the buffer is filling up, expand it. */ | |
2287 | if (buf_alloc < buf_pos * 2) | |
2288 | { | |
2289 | buf_alloc *= 2; | |
2290 | buf = xrealloc (buf, buf_alloc); | |
2291 | } | |
2292 | ||
2293 | QUIT; | |
2294 | } | |
2295 | } | |
2296 | ||
159f81f3 DJ |
2297 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
2298 | the size of the transferred data. See the declaration in "target.h" | |
2299 | function for more information about the return value. */ | |
2300 | ||
2301 | LONGEST | |
2302 | target_read_alloc (struct target_ops *ops, enum target_object object, | |
2303 | const char *annex, gdb_byte **buf_p) | |
2304 | { | |
2305 | return target_read_alloc_1 (ops, object, annex, buf_p, 0); | |
2306 | } | |
2307 | ||
2308 | /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and | |
2309 | returned as a string, allocated using xmalloc. If an error occurs | |
2310 | or the transfer is unsupported, NULL is returned. Empty objects | |
2311 | are returned as allocated but empty strings. A warning is issued | |
2312 | if the result contains any embedded NUL bytes. */ | |
2313 | ||
2314 | char * | |
2315 | target_read_stralloc (struct target_ops *ops, enum target_object object, | |
2316 | const char *annex) | |
2317 | { | |
39086a0e PA |
2318 | gdb_byte *buffer; |
2319 | char *bufstr; | |
7313baad | 2320 | LONGEST i, transferred; |
159f81f3 | 2321 | |
39086a0e PA |
2322 | transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1); |
2323 | bufstr = (char *) buffer; | |
159f81f3 DJ |
2324 | |
2325 | if (transferred < 0) | |
2326 | return NULL; | |
2327 | ||
2328 | if (transferred == 0) | |
2329 | return xstrdup (""); | |
2330 | ||
39086a0e | 2331 | bufstr[transferred] = 0; |
7313baad UW |
2332 | |
2333 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
39086a0e PA |
2334 | for (i = strlen (bufstr); i < transferred; i++) |
2335 | if (bufstr[i] != 0) | |
7313baad UW |
2336 | { |
2337 | warning (_("target object %d, annex %s, " | |
2338 | "contained unexpected null characters"), | |
2339 | (int) object, annex ? annex : "(none)"); | |
2340 | break; | |
2341 | } | |
159f81f3 | 2342 | |
39086a0e | 2343 | return bufstr; |
159f81f3 DJ |
2344 | } |
2345 | ||
b6591e8b AC |
2346 | /* Memory transfer methods. */ |
2347 | ||
2348 | void | |
1b0ba102 | 2349 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
2350 | LONGEST len) |
2351 | { | |
07b82ea5 PA |
2352 | /* This method is used to read from an alternate, non-current |
2353 | target. This read must bypass the overlay support (as symbols | |
2354 | don't match this target), and GDB's internal cache (wrong cache | |
2355 | for this target). */ | |
2356 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) | |
b6591e8b | 2357 | != len) |
578d3588 | 2358 | memory_error (TARGET_XFER_E_IO, addr); |
b6591e8b AC |
2359 | } |
2360 | ||
2361 | ULONGEST | |
5d502164 MS |
2362 | get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr, |
2363 | int len, enum bfd_endian byte_order) | |
b6591e8b | 2364 | { |
f6519ebc | 2365 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
2366 | |
2367 | gdb_assert (len <= sizeof (buf)); | |
2368 | get_target_memory (ops, addr, buf, len); | |
e17a4113 | 2369 | return extract_unsigned_integer (buf, len, byte_order); |
b6591e8b AC |
2370 | } |
2371 | ||
3db08215 MM |
2372 | /* See target.h. */ |
2373 | ||
d914c394 SS |
2374 | int |
2375 | target_insert_breakpoint (struct gdbarch *gdbarch, | |
2376 | struct bp_target_info *bp_tgt) | |
2377 | { | |
2378 | if (!may_insert_breakpoints) | |
2379 | { | |
2380 | warning (_("May not insert breakpoints")); | |
2381 | return 1; | |
2382 | } | |
2383 | ||
6b84065d TT |
2384 | return current_target.to_insert_breakpoint (¤t_target, |
2385 | gdbarch, bp_tgt); | |
d914c394 SS |
2386 | } |
2387 | ||
3db08215 MM |
2388 | /* See target.h. */ |
2389 | ||
d914c394 | 2390 | int |
6b84065d TT |
2391 | target_remove_breakpoint (struct gdbarch *gdbarch, |
2392 | struct bp_target_info *bp_tgt) | |
d914c394 SS |
2393 | { |
2394 | /* This is kind of a weird case to handle, but the permission might | |
2395 | have been changed after breakpoints were inserted - in which case | |
2396 | we should just take the user literally and assume that any | |
2397 | breakpoints should be left in place. */ | |
2398 | if (!may_insert_breakpoints) | |
2399 | { | |
2400 | warning (_("May not remove breakpoints")); | |
2401 | return 1; | |
2402 | } | |
2403 | ||
6b84065d TT |
2404 | return current_target.to_remove_breakpoint (¤t_target, |
2405 | gdbarch, bp_tgt); | |
d914c394 SS |
2406 | } |
2407 | ||
c906108c | 2408 | static void |
fba45db2 | 2409 | target_info (char *args, int from_tty) |
c906108c SS |
2410 | { |
2411 | struct target_ops *t; | |
c906108c | 2412 | int has_all_mem = 0; |
c5aa993b | 2413 | |
c906108c | 2414 | if (symfile_objfile != NULL) |
4262abfb JK |
2415 | printf_unfiltered (_("Symbols from \"%s\".\n"), |
2416 | objfile_name (symfile_objfile)); | |
c906108c | 2417 | |
258b763a | 2418 | for (t = target_stack; t != NULL; t = t->beneath) |
c906108c | 2419 | { |
c35b1492 | 2420 | if (!(*t->to_has_memory) (t)) |
c906108c SS |
2421 | continue; |
2422 | ||
c5aa993b | 2423 | if ((int) (t->to_stratum) <= (int) dummy_stratum) |
c906108c SS |
2424 | continue; |
2425 | if (has_all_mem) | |
3e43a32a MS |
2426 | printf_unfiltered (_("\tWhile running this, " |
2427 | "GDB does not access memory from...\n")); | |
c5aa993b JM |
2428 | printf_unfiltered ("%s:\n", t->to_longname); |
2429 | (t->to_files_info) (t); | |
c35b1492 | 2430 | has_all_mem = (*t->to_has_all_memory) (t); |
c906108c SS |
2431 | } |
2432 | } | |
2433 | ||
fd79ecee DJ |
2434 | /* This function is called before any new inferior is created, e.g. |
2435 | by running a program, attaching, or connecting to a target. | |
2436 | It cleans up any state from previous invocations which might | |
2437 | change between runs. This is a subset of what target_preopen | |
2438 | resets (things which might change between targets). */ | |
2439 | ||
2440 | void | |
2441 | target_pre_inferior (int from_tty) | |
2442 | { | |
c378eb4e | 2443 | /* Clear out solib state. Otherwise the solib state of the previous |
b9db4ced | 2444 | inferior might have survived and is entirely wrong for the new |
c378eb4e | 2445 | target. This has been observed on GNU/Linux using glibc 2.3. How |
b9db4ced UW |
2446 | to reproduce: |
2447 | ||
2448 | bash$ ./foo& | |
2449 | [1] 4711 | |
2450 | bash$ ./foo& | |
2451 | [1] 4712 | |
2452 | bash$ gdb ./foo | |
2453 | [...] | |
2454 | (gdb) attach 4711 | |
2455 | (gdb) detach | |
2456 | (gdb) attach 4712 | |
2457 | Cannot access memory at address 0xdeadbeef | |
2458 | */ | |
b9db4ced | 2459 | |
50c71eaf PA |
2460 | /* In some OSs, the shared library list is the same/global/shared |
2461 | across inferiors. If code is shared between processes, so are | |
2462 | memory regions and features. */ | |
f5656ead | 2463 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
50c71eaf PA |
2464 | { |
2465 | no_shared_libraries (NULL, from_tty); | |
2466 | ||
2467 | invalidate_target_mem_regions (); | |
424163ea | 2468 | |
50c71eaf PA |
2469 | target_clear_description (); |
2470 | } | |
8ffcbaaf YQ |
2471 | |
2472 | agent_capability_invalidate (); | |
fd79ecee DJ |
2473 | } |
2474 | ||
b8fa0bfa PA |
2475 | /* Callback for iterate_over_inferiors. Gets rid of the given |
2476 | inferior. */ | |
2477 | ||
2478 | static int | |
2479 | dispose_inferior (struct inferior *inf, void *args) | |
2480 | { | |
2481 | struct thread_info *thread; | |
2482 | ||
2483 | thread = any_thread_of_process (inf->pid); | |
2484 | if (thread) | |
2485 | { | |
2486 | switch_to_thread (thread->ptid); | |
2487 | ||
2488 | /* Core inferiors actually should be detached, not killed. */ | |
2489 | if (target_has_execution) | |
2490 | target_kill (); | |
2491 | else | |
2492 | target_detach (NULL, 0); | |
2493 | } | |
2494 | ||
2495 | return 0; | |
2496 | } | |
2497 | ||
c906108c SS |
2498 | /* This is to be called by the open routine before it does |
2499 | anything. */ | |
2500 | ||
2501 | void | |
fba45db2 | 2502 | target_preopen (int from_tty) |
c906108c | 2503 | { |
c5aa993b | 2504 | dont_repeat (); |
c906108c | 2505 | |
b8fa0bfa | 2506 | if (have_inferiors ()) |
c5aa993b | 2507 | { |
adf40b2e | 2508 | if (!from_tty |
b8fa0bfa PA |
2509 | || !have_live_inferiors () |
2510 | || query (_("A program is being debugged already. Kill it? "))) | |
2511 | iterate_over_inferiors (dispose_inferior, NULL); | |
c906108c | 2512 | else |
8a3fe4f8 | 2513 | error (_("Program not killed.")); |
c906108c SS |
2514 | } |
2515 | ||
2516 | /* Calling target_kill may remove the target from the stack. But if | |
2517 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
2518 | /* Leave the exec target, though. The user may be switching from a |
2519 | live process to a core of the same program. */ | |
460014f5 | 2520 | pop_all_targets_above (file_stratum); |
fd79ecee DJ |
2521 | |
2522 | target_pre_inferior (from_tty); | |
c906108c SS |
2523 | } |
2524 | ||
2525 | /* Detach a target after doing deferred register stores. */ | |
2526 | ||
2527 | void | |
52554a0e | 2528 | target_detach (const char *args, int from_tty) |
c906108c | 2529 | { |
136d6dae VP |
2530 | struct target_ops* t; |
2531 | ||
f5656ead | 2532 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
2533 | /* Don't remove global breakpoints here. They're removed on |
2534 | disconnection from the target. */ | |
2535 | ; | |
2536 | else | |
2537 | /* If we're in breakpoints-always-inserted mode, have to remove | |
2538 | them before detaching. */ | |
dfd4cc63 | 2539 | remove_breakpoints_pid (ptid_get_pid (inferior_ptid)); |
74960c60 | 2540 | |
24291992 PA |
2541 | prepare_for_detach (); |
2542 | ||
09da0d0a TT |
2543 | current_target.to_detach (¤t_target, args, from_tty); |
2544 | if (targetdebug) | |
2545 | fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n", | |
2546 | args, from_tty); | |
c906108c SS |
2547 | } |
2548 | ||
6ad8ae5c DJ |
2549 | void |
2550 | target_disconnect (char *args, int from_tty) | |
2551 | { | |
597320e7 DJ |
2552 | struct target_ops *t; |
2553 | ||
50c71eaf PA |
2554 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
2555 | are global across processes, we have to remove them before | |
2556 | disconnecting. */ | |
74960c60 VP |
2557 | remove_breakpoints (); |
2558 | ||
597320e7 DJ |
2559 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2560 | if (t->to_disconnect != NULL) | |
2561 | { | |
2562 | if (targetdebug) | |
2563 | fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n", | |
2564 | args, from_tty); | |
2565 | t->to_disconnect (t, args, from_tty); | |
2566 | return; | |
2567 | } | |
2568 | ||
2569 | tcomplain (); | |
6ad8ae5c DJ |
2570 | } |
2571 | ||
117de6a9 | 2572 | ptid_t |
47608cb1 | 2573 | target_wait (ptid_t ptid, struct target_waitstatus *status, int options) |
117de6a9 PA |
2574 | { |
2575 | struct target_ops *t; | |
6b84065d TT |
2576 | ptid_t retval = (current_target.to_wait) (¤t_target, ptid, |
2577 | status, options); | |
117de6a9 | 2578 | |
6b84065d | 2579 | if (targetdebug) |
117de6a9 | 2580 | { |
6b84065d TT |
2581 | char *status_string; |
2582 | char *options_string; | |
117de6a9 | 2583 | |
6b84065d TT |
2584 | status_string = target_waitstatus_to_string (status); |
2585 | options_string = target_options_to_string (options); | |
2586 | fprintf_unfiltered (gdb_stdlog, | |
2587 | "target_wait (%d, status, options={%s})" | |
2588 | " = %d, %s\n", | |
2589 | ptid_get_pid (ptid), options_string, | |
2590 | ptid_get_pid (retval), status_string); | |
2591 | xfree (status_string); | |
2592 | xfree (options_string); | |
117de6a9 PA |
2593 | } |
2594 | ||
6b84065d | 2595 | return retval; |
117de6a9 PA |
2596 | } |
2597 | ||
2598 | char * | |
2599 | target_pid_to_str (ptid_t ptid) | |
2600 | { | |
2601 | struct target_ops *t; | |
2602 | ||
2603 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2604 | { | |
2605 | if (t->to_pid_to_str != NULL) | |
2606 | return (*t->to_pid_to_str) (t, ptid); | |
2607 | } | |
2608 | ||
2609 | return normal_pid_to_str (ptid); | |
2610 | } | |
2611 | ||
4694da01 TT |
2612 | char * |
2613 | target_thread_name (struct thread_info *info) | |
2614 | { | |
825828fc | 2615 | return current_target.to_thread_name (¤t_target, info); |
4694da01 TT |
2616 | } |
2617 | ||
e1ac3328 | 2618 | void |
2ea28649 | 2619 | target_resume (ptid_t ptid, int step, enum gdb_signal signal) |
e1ac3328 | 2620 | { |
28439f5e PA |
2621 | struct target_ops *t; |
2622 | ||
4e5d721f | 2623 | target_dcache_invalidate (); |
28439f5e | 2624 | |
6b84065d TT |
2625 | current_target.to_resume (¤t_target, ptid, step, signal); |
2626 | if (targetdebug) | |
2627 | fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n", | |
2628 | ptid_get_pid (ptid), | |
2629 | step ? "step" : "continue", | |
2630 | gdb_signal_to_name (signal)); | |
28439f5e | 2631 | |
6b84065d TT |
2632 | registers_changed_ptid (ptid); |
2633 | set_executing (ptid, 1); | |
2634 | set_running (ptid, 1); | |
2635 | clear_inline_frame_state (ptid); | |
e1ac3328 | 2636 | } |
2455069d UW |
2637 | |
2638 | void | |
2639 | target_pass_signals (int numsigs, unsigned char *pass_signals) | |
2640 | { | |
2641 | struct target_ops *t; | |
2642 | ||
2643 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2644 | { | |
2645 | if (t->to_pass_signals != NULL) | |
2646 | { | |
2647 | if (targetdebug) | |
2648 | { | |
2649 | int i; | |
2650 | ||
2651 | fprintf_unfiltered (gdb_stdlog, "target_pass_signals (%d, {", | |
2652 | numsigs); | |
2653 | ||
2654 | for (i = 0; i < numsigs; i++) | |
2655 | if (pass_signals[i]) | |
2656 | fprintf_unfiltered (gdb_stdlog, " %s", | |
2ea28649 | 2657 | gdb_signal_to_name (i)); |
2455069d UW |
2658 | |
2659 | fprintf_unfiltered (gdb_stdlog, " })\n"); | |
2660 | } | |
2661 | ||
94bedb42 | 2662 | (*t->to_pass_signals) (t, numsigs, pass_signals); |
2455069d UW |
2663 | return; |
2664 | } | |
2665 | } | |
2666 | } | |
2667 | ||
9b224c5e PA |
2668 | void |
2669 | target_program_signals (int numsigs, unsigned char *program_signals) | |
2670 | { | |
2671 | struct target_ops *t; | |
2672 | ||
2673 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2674 | { | |
2675 | if (t->to_program_signals != NULL) | |
2676 | { | |
2677 | if (targetdebug) | |
2678 | { | |
2679 | int i; | |
2680 | ||
2681 | fprintf_unfiltered (gdb_stdlog, "target_program_signals (%d, {", | |
2682 | numsigs); | |
2683 | ||
2684 | for (i = 0; i < numsigs; i++) | |
2685 | if (program_signals[i]) | |
2686 | fprintf_unfiltered (gdb_stdlog, " %s", | |
2ea28649 | 2687 | gdb_signal_to_name (i)); |
9b224c5e PA |
2688 | |
2689 | fprintf_unfiltered (gdb_stdlog, " })\n"); | |
2690 | } | |
2691 | ||
daf5e9b6 | 2692 | (*t->to_program_signals) (t, numsigs, program_signals); |
9b224c5e PA |
2693 | return; |
2694 | } | |
2695 | } | |
2696 | } | |
2697 | ||
ee057212 DJ |
2698 | /* Look through the list of possible targets for a target that can |
2699 | follow forks. */ | |
2700 | ||
2701 | int | |
07107ca6 | 2702 | target_follow_fork (int follow_child, int detach_fork) |
ee057212 DJ |
2703 | { |
2704 | struct target_ops *t; | |
2705 | ||
2706 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2707 | { | |
2708 | if (t->to_follow_fork != NULL) | |
2709 | { | |
07107ca6 | 2710 | int retval = t->to_follow_fork (t, follow_child, detach_fork); |
5d502164 | 2711 | |
ee057212 | 2712 | if (targetdebug) |
07107ca6 LM |
2713 | fprintf_unfiltered (gdb_stdlog, |
2714 | "target_follow_fork (%d, %d) = %d\n", | |
2715 | follow_child, detach_fork, retval); | |
ee057212 DJ |
2716 | return retval; |
2717 | } | |
2718 | } | |
2719 | ||
2720 | /* Some target returned a fork event, but did not know how to follow it. */ | |
2721 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 2722 | _("could not find a target to follow fork")); |
ee057212 DJ |
2723 | } |
2724 | ||
136d6dae VP |
2725 | void |
2726 | target_mourn_inferior (void) | |
2727 | { | |
2728 | struct target_ops *t; | |
5d502164 | 2729 | |
136d6dae VP |
2730 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2731 | { | |
2732 | if (t->to_mourn_inferior != NULL) | |
2733 | { | |
2734 | t->to_mourn_inferior (t); | |
947b8855 PA |
2735 | if (targetdebug) |
2736 | fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n"); | |
efbd6e75 JB |
2737 | |
2738 | /* We no longer need to keep handles on any of the object files. | |
2739 | Make sure to release them to avoid unnecessarily locking any | |
2740 | of them while we're not actually debugging. */ | |
2741 | bfd_cache_close_all (); | |
2742 | ||
136d6dae VP |
2743 | return; |
2744 | } | |
2745 | } | |
2746 | ||
2747 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 2748 | _("could not find a target to follow mourn inferior")); |
136d6dae VP |
2749 | } |
2750 | ||
424163ea DJ |
2751 | /* Look for a target which can describe architectural features, starting |
2752 | from TARGET. If we find one, return its description. */ | |
2753 | ||
2754 | const struct target_desc * | |
2755 | target_read_description (struct target_ops *target) | |
2756 | { | |
2757 | struct target_ops *t; | |
2758 | ||
2759 | for (t = target; t != NULL; t = t->beneath) | |
2760 | if (t->to_read_description != NULL) | |
2761 | { | |
2762 | const struct target_desc *tdesc; | |
2763 | ||
2764 | tdesc = t->to_read_description (t); | |
2765 | if (tdesc) | |
2766 | return tdesc; | |
2767 | } | |
2768 | ||
2769 | return NULL; | |
2770 | } | |
2771 | ||
08388c79 DE |
2772 | /* The default implementation of to_search_memory. |
2773 | This implements a basic search of memory, reading target memory and | |
2774 | performing the search here (as opposed to performing the search in on the | |
2775 | target side with, for example, gdbserver). */ | |
2776 | ||
2777 | int | |
2778 | simple_search_memory (struct target_ops *ops, | |
2779 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2780 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2781 | CORE_ADDR *found_addrp) | |
2782 | { | |
2783 | /* NOTE: also defined in find.c testcase. */ | |
2784 | #define SEARCH_CHUNK_SIZE 16000 | |
2785 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
2786 | /* Buffer to hold memory contents for searching. */ | |
2787 | gdb_byte *search_buf; | |
2788 | unsigned search_buf_size; | |
2789 | struct cleanup *old_cleanups; | |
2790 | ||
2791 | search_buf_size = chunk_size + pattern_len - 1; | |
2792 | ||
2793 | /* No point in trying to allocate a buffer larger than the search space. */ | |
2794 | if (search_space_len < search_buf_size) | |
2795 | search_buf_size = search_space_len; | |
2796 | ||
2797 | search_buf = malloc (search_buf_size); | |
2798 | if (search_buf == NULL) | |
5e1471f5 | 2799 | error (_("Unable to allocate memory to perform the search.")); |
08388c79 DE |
2800 | old_cleanups = make_cleanup (free_current_contents, &search_buf); |
2801 | ||
2802 | /* Prime the search buffer. */ | |
2803 | ||
2804 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2805 | search_buf, start_addr, search_buf_size) != search_buf_size) | |
2806 | { | |
b3dc46ff AB |
2807 | warning (_("Unable to access %s bytes of target " |
2808 | "memory at %s, halting search."), | |
2809 | pulongest (search_buf_size), hex_string (start_addr)); | |
08388c79 DE |
2810 | do_cleanups (old_cleanups); |
2811 | return -1; | |
2812 | } | |
2813 | ||
2814 | /* Perform the search. | |
2815 | ||
2816 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
2817 | When we've scanned N bytes we copy the trailing bytes to the start and | |
2818 | read in another N bytes. */ | |
2819 | ||
2820 | while (search_space_len >= pattern_len) | |
2821 | { | |
2822 | gdb_byte *found_ptr; | |
2823 | unsigned nr_search_bytes = min (search_space_len, search_buf_size); | |
2824 | ||
2825 | found_ptr = memmem (search_buf, nr_search_bytes, | |
2826 | pattern, pattern_len); | |
2827 | ||
2828 | if (found_ptr != NULL) | |
2829 | { | |
2830 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
5d502164 | 2831 | |
08388c79 DE |
2832 | *found_addrp = found_addr; |
2833 | do_cleanups (old_cleanups); | |
2834 | return 1; | |
2835 | } | |
2836 | ||
2837 | /* Not found in this chunk, skip to next chunk. */ | |
2838 | ||
2839 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
2840 | if (search_space_len >= chunk_size) | |
2841 | search_space_len -= chunk_size; | |
2842 | else | |
2843 | search_space_len = 0; | |
2844 | ||
2845 | if (search_space_len >= pattern_len) | |
2846 | { | |
2847 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 2848 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
2849 | int nr_to_read; |
2850 | ||
2851 | /* Copy the trailing part of the previous iteration to the front | |
2852 | of the buffer for the next iteration. */ | |
2853 | gdb_assert (keep_len == pattern_len - 1); | |
2854 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
2855 | ||
2856 | nr_to_read = min (search_space_len - keep_len, chunk_size); | |
2857 | ||
2858 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2859 | search_buf + keep_len, read_addr, | |
2860 | nr_to_read) != nr_to_read) | |
2861 | { | |
b3dc46ff | 2862 | warning (_("Unable to access %s bytes of target " |
9b20d036 | 2863 | "memory at %s, halting search."), |
b3dc46ff | 2864 | plongest (nr_to_read), |
08388c79 DE |
2865 | hex_string (read_addr)); |
2866 | do_cleanups (old_cleanups); | |
2867 | return -1; | |
2868 | } | |
2869 | ||
2870 | start_addr += chunk_size; | |
2871 | } | |
2872 | } | |
2873 | ||
2874 | /* Not found. */ | |
2875 | ||
2876 | do_cleanups (old_cleanups); | |
2877 | return 0; | |
2878 | } | |
2879 | ||
2880 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the | |
2881 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2882 | ||
2883 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2884 | requiring halting of the search (e.g. memory read error). | |
2885 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2886 | ||
2887 | int | |
2888 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2889 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2890 | CORE_ADDR *found_addrp) | |
2891 | { | |
2892 | struct target_ops *t; | |
2893 | int found; | |
2894 | ||
2895 | /* We don't use INHERIT to set current_target.to_search_memory, | |
2896 | so we have to scan the target stack and handle targetdebug | |
2897 | ourselves. */ | |
2898 | ||
2899 | if (targetdebug) | |
2900 | fprintf_unfiltered (gdb_stdlog, "target_search_memory (%s, ...)\n", | |
2901 | hex_string (start_addr)); | |
2902 | ||
2903 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2904 | if (t->to_search_memory != NULL) | |
2905 | break; | |
2906 | ||
2907 | if (t != NULL) | |
2908 | { | |
2909 | found = t->to_search_memory (t, start_addr, search_space_len, | |
2910 | pattern, pattern_len, found_addrp); | |
2911 | } | |
2912 | else | |
2913 | { | |
2914 | /* If a special version of to_search_memory isn't available, use the | |
2915 | simple version. */ | |
c35b1492 | 2916 | found = simple_search_memory (current_target.beneath, |
08388c79 DE |
2917 | start_addr, search_space_len, |
2918 | pattern, pattern_len, found_addrp); | |
2919 | } | |
2920 | ||
2921 | if (targetdebug) | |
2922 | fprintf_unfiltered (gdb_stdlog, " = %d\n", found); | |
2923 | ||
2924 | return found; | |
2925 | } | |
2926 | ||
8edfe269 DJ |
2927 | /* Look through the currently pushed targets. If none of them will |
2928 | be able to restart the currently running process, issue an error | |
2929 | message. */ | |
2930 | ||
2931 | void | |
2932 | target_require_runnable (void) | |
2933 | { | |
2934 | struct target_ops *t; | |
2935 | ||
2936 | for (t = target_stack; t != NULL; t = t->beneath) | |
2937 | { | |
2938 | /* If this target knows how to create a new program, then | |
2939 | assume we will still be able to after killing the current | |
2940 | one. Either killing and mourning will not pop T, or else | |
2941 | find_default_run_target will find it again. */ | |
2942 | if (t->to_create_inferior != NULL) | |
2943 | return; | |
2944 | ||
2945 | /* Do not worry about thread_stratum targets that can not | |
2946 | create inferiors. Assume they will be pushed again if | |
2947 | necessary, and continue to the process_stratum. */ | |
85e747d2 UW |
2948 | if (t->to_stratum == thread_stratum |
2949 | || t->to_stratum == arch_stratum) | |
8edfe269 DJ |
2950 | continue; |
2951 | ||
3e43a32a MS |
2952 | error (_("The \"%s\" target does not support \"run\". " |
2953 | "Try \"help target\" or \"continue\"."), | |
8edfe269 DJ |
2954 | t->to_shortname); |
2955 | } | |
2956 | ||
2957 | /* This function is only called if the target is running. In that | |
2958 | case there should have been a process_stratum target and it | |
c378eb4e | 2959 | should either know how to create inferiors, or not... */ |
9b20d036 | 2960 | internal_error (__FILE__, __LINE__, _("No targets found")); |
8edfe269 DJ |
2961 | } |
2962 | ||
c906108c SS |
2963 | /* Look through the list of possible targets for a target that can |
2964 | execute a run or attach command without any other data. This is | |
2965 | used to locate the default process stratum. | |
2966 | ||
5f667f2d PA |
2967 | If DO_MESG is not NULL, the result is always valid (error() is |
2968 | called for errors); else, return NULL on error. */ | |
c906108c SS |
2969 | |
2970 | static struct target_ops * | |
fba45db2 | 2971 | find_default_run_target (char *do_mesg) |
c906108c SS |
2972 | { |
2973 | struct target_ops **t; | |
2974 | struct target_ops *runable = NULL; | |
2975 | int count; | |
2976 | ||
2977 | count = 0; | |
2978 | ||
2979 | for (t = target_structs; t < target_structs + target_struct_size; | |
2980 | ++t) | |
2981 | { | |
c5aa993b | 2982 | if ((*t)->to_can_run && target_can_run (*t)) |
c906108c SS |
2983 | { |
2984 | runable = *t; | |
2985 | ++count; | |
2986 | } | |
2987 | } | |
2988 | ||
2989 | if (count != 1) | |
5f667f2d PA |
2990 | { |
2991 | if (do_mesg) | |
2992 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
2993 | else | |
2994 | return NULL; | |
2995 | } | |
c906108c SS |
2996 | |
2997 | return runable; | |
2998 | } | |
2999 | ||
3000 | void | |
136d6dae | 3001 | find_default_attach (struct target_ops *ops, char *args, int from_tty) |
c906108c SS |
3002 | { |
3003 | struct target_ops *t; | |
3004 | ||
c5aa993b | 3005 | t = find_default_run_target ("attach"); |
136d6dae | 3006 | (t->to_attach) (t, args, from_tty); |
c906108c SS |
3007 | return; |
3008 | } | |
3009 | ||
c906108c | 3010 | void |
136d6dae VP |
3011 | find_default_create_inferior (struct target_ops *ops, |
3012 | char *exec_file, char *allargs, char **env, | |
c27cda74 | 3013 | int from_tty) |
c906108c SS |
3014 | { |
3015 | struct target_ops *t; | |
3016 | ||
c5aa993b | 3017 | t = find_default_run_target ("run"); |
136d6dae | 3018 | (t->to_create_inferior) (t, exec_file, allargs, env, from_tty); |
c906108c SS |
3019 | return; |
3020 | } | |
3021 | ||
2c0b251b | 3022 | static int |
6a109b6b | 3023 | find_default_can_async_p (struct target_ops *ignore) |
b84876c2 PA |
3024 | { |
3025 | struct target_ops *t; | |
3026 | ||
5f667f2d PA |
3027 | /* This may be called before the target is pushed on the stack; |
3028 | look for the default process stratum. If there's none, gdb isn't | |
3029 | configured with a native debugger, and target remote isn't | |
3030 | connected yet. */ | |
3031 | t = find_default_run_target (NULL); | |
6b84065d | 3032 | if (t && t->to_can_async_p != delegate_can_async_p) |
6a109b6b | 3033 | return (t->to_can_async_p) (t); |
b84876c2 PA |
3034 | return 0; |
3035 | } | |
3036 | ||
2c0b251b | 3037 | static int |
6a109b6b | 3038 | find_default_is_async_p (struct target_ops *ignore) |
b84876c2 PA |
3039 | { |
3040 | struct target_ops *t; | |
3041 | ||
5f667f2d PA |
3042 | /* This may be called before the target is pushed on the stack; |
3043 | look for the default process stratum. If there's none, gdb isn't | |
3044 | configured with a native debugger, and target remote isn't | |
3045 | connected yet. */ | |
3046 | t = find_default_run_target (NULL); | |
6b84065d | 3047 | if (t && t->to_is_async_p != delegate_is_async_p) |
6a109b6b | 3048 | return (t->to_is_async_p) (t); |
b84876c2 PA |
3049 | return 0; |
3050 | } | |
3051 | ||
2c0b251b | 3052 | static int |
2a9a2795 | 3053 | find_default_supports_non_stop (struct target_ops *self) |
9908b566 VP |
3054 | { |
3055 | struct target_ops *t; | |
3056 | ||
3057 | t = find_default_run_target (NULL); | |
3058 | if (t && t->to_supports_non_stop) | |
2a9a2795 | 3059 | return (t->to_supports_non_stop) (t); |
9908b566 VP |
3060 | return 0; |
3061 | } | |
3062 | ||
3063 | int | |
2c0b251b | 3064 | target_supports_non_stop (void) |
9908b566 VP |
3065 | { |
3066 | struct target_ops *t; | |
5d502164 | 3067 | |
9908b566 VP |
3068 | for (t = ¤t_target; t != NULL; t = t->beneath) |
3069 | if (t->to_supports_non_stop) | |
2a9a2795 | 3070 | return t->to_supports_non_stop (t); |
9908b566 VP |
3071 | |
3072 | return 0; | |
3073 | } | |
3074 | ||
145b16a9 UW |
3075 | /* Implement the "info proc" command. */ |
3076 | ||
451b7c33 | 3077 | int |
145b16a9 UW |
3078 | target_info_proc (char *args, enum info_proc_what what) |
3079 | { | |
3080 | struct target_ops *t; | |
3081 | ||
3082 | /* If we're already connected to something that can get us OS | |
3083 | related data, use it. Otherwise, try using the native | |
3084 | target. */ | |
3085 | if (current_target.to_stratum >= process_stratum) | |
3086 | t = current_target.beneath; | |
3087 | else | |
3088 | t = find_default_run_target (NULL); | |
3089 | ||
3090 | for (; t != NULL; t = t->beneath) | |
3091 | { | |
3092 | if (t->to_info_proc != NULL) | |
3093 | { | |
3094 | t->to_info_proc (t, args, what); | |
3095 | ||
3096 | if (targetdebug) | |
3097 | fprintf_unfiltered (gdb_stdlog, | |
3098 | "target_info_proc (\"%s\", %d)\n", args, what); | |
3099 | ||
451b7c33 | 3100 | return 1; |
145b16a9 UW |
3101 | } |
3102 | } | |
3103 | ||
451b7c33 | 3104 | return 0; |
145b16a9 UW |
3105 | } |
3106 | ||
03583c20 | 3107 | static int |
2bfc0540 | 3108 | find_default_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
3109 | { |
3110 | struct target_ops *t; | |
3111 | ||
3112 | t = find_default_run_target (NULL); | |
3113 | if (t && t->to_supports_disable_randomization) | |
2bfc0540 | 3114 | return (t->to_supports_disable_randomization) (t); |
03583c20 UW |
3115 | return 0; |
3116 | } | |
3117 | ||
3118 | int | |
3119 | target_supports_disable_randomization (void) | |
3120 | { | |
3121 | struct target_ops *t; | |
3122 | ||
3123 | for (t = ¤t_target; t != NULL; t = t->beneath) | |
3124 | if (t->to_supports_disable_randomization) | |
2bfc0540 | 3125 | return t->to_supports_disable_randomization (t); |
03583c20 UW |
3126 | |
3127 | return 0; | |
3128 | } | |
9908b566 | 3129 | |
07e059b5 VP |
3130 | char * |
3131 | target_get_osdata (const char *type) | |
3132 | { | |
07e059b5 VP |
3133 | struct target_ops *t; |
3134 | ||
739ef7fb PA |
3135 | /* If we're already connected to something that can get us OS |
3136 | related data, use it. Otherwise, try using the native | |
3137 | target. */ | |
3138 | if (current_target.to_stratum >= process_stratum) | |
6d097e65 | 3139 | t = current_target.beneath; |
739ef7fb PA |
3140 | else |
3141 | t = find_default_run_target ("get OS data"); | |
07e059b5 VP |
3142 | |
3143 | if (!t) | |
3144 | return NULL; | |
3145 | ||
6d097e65 | 3146 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
3147 | } |
3148 | ||
6c95b8df PA |
3149 | /* Determine the current address space of thread PTID. */ |
3150 | ||
3151 | struct address_space * | |
3152 | target_thread_address_space (ptid_t ptid) | |
3153 | { | |
c0694254 | 3154 | struct address_space *aspace; |
6c95b8df | 3155 | struct inferior *inf; |
c0694254 PA |
3156 | struct target_ops *t; |
3157 | ||
3158 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3159 | { | |
3160 | if (t->to_thread_address_space != NULL) | |
3161 | { | |
3162 | aspace = t->to_thread_address_space (t, ptid); | |
3163 | gdb_assert (aspace); | |
6c95b8df | 3164 | |
c0694254 PA |
3165 | if (targetdebug) |
3166 | fprintf_unfiltered (gdb_stdlog, | |
3167 | "target_thread_address_space (%s) = %d\n", | |
3168 | target_pid_to_str (ptid), | |
3169 | address_space_num (aspace)); | |
3170 | return aspace; | |
3171 | } | |
3172 | } | |
6c95b8df PA |
3173 | |
3174 | /* Fall-back to the "main" address space of the inferior. */ | |
3175 | inf = find_inferior_pid (ptid_get_pid (ptid)); | |
3176 | ||
3177 | if (inf == NULL || inf->aspace == NULL) | |
3e43a32a | 3178 | internal_error (__FILE__, __LINE__, |
9b20d036 MS |
3179 | _("Can't determine the current " |
3180 | "address space of thread %s\n"), | |
6c95b8df PA |
3181 | target_pid_to_str (ptid)); |
3182 | ||
3183 | return inf->aspace; | |
3184 | } | |
3185 | ||
7313baad UW |
3186 | |
3187 | /* Target file operations. */ | |
3188 | ||
3189 | static struct target_ops * | |
3190 | default_fileio_target (void) | |
3191 | { | |
3192 | /* If we're already connected to something that can perform | |
3193 | file I/O, use it. Otherwise, try using the native target. */ | |
3194 | if (current_target.to_stratum >= process_stratum) | |
3195 | return current_target.beneath; | |
3196 | else | |
3197 | return find_default_run_target ("file I/O"); | |
3198 | } | |
3199 | ||
3200 | /* Open FILENAME on the target, using FLAGS and MODE. Return a | |
3201 | target file descriptor, or -1 if an error occurs (and set | |
3202 | *TARGET_ERRNO). */ | |
3203 | int | |
3204 | target_fileio_open (const char *filename, int flags, int mode, | |
3205 | int *target_errno) | |
3206 | { | |
3207 | struct target_ops *t; | |
3208 | ||
3209 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3210 | { | |
3211 | if (t->to_fileio_open != NULL) | |
3212 | { | |
cd897586 | 3213 | int fd = t->to_fileio_open (t, filename, flags, mode, target_errno); |
7313baad UW |
3214 | |
3215 | if (targetdebug) | |
3216 | fprintf_unfiltered (gdb_stdlog, | |
3217 | "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n", | |
3218 | filename, flags, mode, | |
3219 | fd, fd != -1 ? 0 : *target_errno); | |
3220 | return fd; | |
3221 | } | |
3222 | } | |
3223 | ||
3224 | *target_errno = FILEIO_ENOSYS; | |
3225 | return -1; | |
3226 | } | |
3227 | ||
3228 | /* Write up to LEN bytes from WRITE_BUF to FD on the target. | |
3229 | Return the number of bytes written, or -1 if an error occurs | |
3230 | (and set *TARGET_ERRNO). */ | |
3231 | int | |
3232 | target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
3233 | ULONGEST offset, int *target_errno) | |
3234 | { | |
3235 | struct target_ops *t; | |
3236 | ||
3237 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3238 | { | |
3239 | if (t->to_fileio_pwrite != NULL) | |
3240 | { | |
0d866f62 | 3241 | int ret = t->to_fileio_pwrite (t, fd, write_buf, len, offset, |
7313baad UW |
3242 | target_errno); |
3243 | ||
3244 | if (targetdebug) | |
3245 | fprintf_unfiltered (gdb_stdlog, | |
a71b5a38 | 3246 | "target_fileio_pwrite (%d,...,%d,%s) " |
7313baad | 3247 | "= %d (%d)\n", |
a71b5a38 | 3248 | fd, len, pulongest (offset), |
7313baad UW |
3249 | ret, ret != -1 ? 0 : *target_errno); |
3250 | return ret; | |
3251 | } | |
3252 | } | |
3253 | ||
3254 | *target_errno = FILEIO_ENOSYS; | |
3255 | return -1; | |
3256 | } | |
3257 | ||
3258 | /* Read up to LEN bytes FD on the target into READ_BUF. | |
3259 | Return the number of bytes read, or -1 if an error occurs | |
3260 | (and set *TARGET_ERRNO). */ | |
3261 | int | |
3262 | target_fileio_pread (int fd, gdb_byte *read_buf, int len, | |
3263 | ULONGEST offset, int *target_errno) | |
3264 | { | |
3265 | struct target_ops *t; | |
3266 | ||
3267 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3268 | { | |
3269 | if (t->to_fileio_pread != NULL) | |
3270 | { | |
a3be983c | 3271 | int ret = t->to_fileio_pread (t, fd, read_buf, len, offset, |
7313baad UW |
3272 | target_errno); |
3273 | ||
3274 | if (targetdebug) | |
3275 | fprintf_unfiltered (gdb_stdlog, | |
a71b5a38 | 3276 | "target_fileio_pread (%d,...,%d,%s) " |
7313baad | 3277 | "= %d (%d)\n", |
a71b5a38 | 3278 | fd, len, pulongest (offset), |
7313baad UW |
3279 | ret, ret != -1 ? 0 : *target_errno); |
3280 | return ret; | |
3281 | } | |
3282 | } | |
3283 | ||
3284 | *target_errno = FILEIO_ENOSYS; | |
3285 | return -1; | |
3286 | } | |
3287 | ||
3288 | /* Close FD on the target. Return 0, or -1 if an error occurs | |
3289 | (and set *TARGET_ERRNO). */ | |
3290 | int | |
3291 | target_fileio_close (int fd, int *target_errno) | |
3292 | { | |
3293 | struct target_ops *t; | |
3294 | ||
3295 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3296 | { | |
3297 | if (t->to_fileio_close != NULL) | |
3298 | { | |
df39ea25 | 3299 | int ret = t->to_fileio_close (t, fd, target_errno); |
7313baad UW |
3300 | |
3301 | if (targetdebug) | |
3302 | fprintf_unfiltered (gdb_stdlog, | |
3303 | "target_fileio_close (%d) = %d (%d)\n", | |
3304 | fd, ret, ret != -1 ? 0 : *target_errno); | |
3305 | return ret; | |
3306 | } | |
3307 | } | |
3308 | ||
3309 | *target_errno = FILEIO_ENOSYS; | |
3310 | return -1; | |
3311 | } | |
3312 | ||
3313 | /* Unlink FILENAME on the target. Return 0, or -1 if an error | |
3314 | occurs (and set *TARGET_ERRNO). */ | |
3315 | int | |
3316 | target_fileio_unlink (const char *filename, int *target_errno) | |
3317 | { | |
3318 | struct target_ops *t; | |
3319 | ||
3320 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3321 | { | |
3322 | if (t->to_fileio_unlink != NULL) | |
3323 | { | |
dbbca37d | 3324 | int ret = t->to_fileio_unlink (t, filename, target_errno); |
7313baad UW |
3325 | |
3326 | if (targetdebug) | |
3327 | fprintf_unfiltered (gdb_stdlog, | |
3328 | "target_fileio_unlink (%s) = %d (%d)\n", | |
3329 | filename, ret, ret != -1 ? 0 : *target_errno); | |
3330 | return ret; | |
3331 | } | |
3332 | } | |
3333 | ||
3334 | *target_errno = FILEIO_ENOSYS; | |
3335 | return -1; | |
3336 | } | |
3337 | ||
b9e7b9c3 UW |
3338 | /* Read value of symbolic link FILENAME on the target. Return a |
3339 | null-terminated string allocated via xmalloc, or NULL if an error | |
3340 | occurs (and set *TARGET_ERRNO). */ | |
3341 | char * | |
3342 | target_fileio_readlink (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_readlink != NULL) | |
3349 | { | |
fab5aa7c | 3350 | char *ret = t->to_fileio_readlink (t, filename, target_errno); |
b9e7b9c3 UW |
3351 | |
3352 | if (targetdebug) | |
3353 | fprintf_unfiltered (gdb_stdlog, | |
3354 | "target_fileio_readlink (%s) = %s (%d)\n", | |
3355 | filename, ret? ret : "(nil)", | |
3356 | ret? 0 : *target_errno); | |
3357 | return ret; | |
3358 | } | |
3359 | } | |
3360 | ||
3361 | *target_errno = FILEIO_ENOSYS; | |
3362 | return NULL; | |
3363 | } | |
3364 | ||
7313baad UW |
3365 | static void |
3366 | target_fileio_close_cleanup (void *opaque) | |
3367 | { | |
3368 | int fd = *(int *) opaque; | |
3369 | int target_errno; | |
3370 | ||
3371 | target_fileio_close (fd, &target_errno); | |
3372 | } | |
3373 | ||
3374 | /* Read target file FILENAME. Store the result in *BUF_P and | |
3375 | return the size of the transferred data. PADDING additional bytes are | |
3376 | available in *BUF_P. This is a helper function for | |
3377 | target_fileio_read_alloc; see the declaration of that function for more | |
3378 | information. */ | |
3379 | ||
3380 | static LONGEST | |
3381 | target_fileio_read_alloc_1 (const char *filename, | |
3382 | gdb_byte **buf_p, int padding) | |
3383 | { | |
3384 | struct cleanup *close_cleanup; | |
3385 | size_t buf_alloc, buf_pos; | |
3386 | gdb_byte *buf; | |
3387 | LONGEST n; | |
3388 | int fd; | |
3389 | int target_errno; | |
3390 | ||
3391 | fd = target_fileio_open (filename, FILEIO_O_RDONLY, 0700, &target_errno); | |
3392 | if (fd == -1) | |
3393 | return -1; | |
3394 | ||
3395 | close_cleanup = make_cleanup (target_fileio_close_cleanup, &fd); | |
3396 | ||
3397 | /* Start by reading up to 4K at a time. The target will throttle | |
3398 | this number down if necessary. */ | |
3399 | buf_alloc = 4096; | |
3400 | buf = xmalloc (buf_alloc); | |
3401 | buf_pos = 0; | |
3402 | while (1) | |
3403 | { | |
3404 | n = target_fileio_pread (fd, &buf[buf_pos], | |
3405 | buf_alloc - buf_pos - padding, buf_pos, | |
3406 | &target_errno); | |
3407 | if (n < 0) | |
3408 | { | |
3409 | /* An error occurred. */ | |
3410 | do_cleanups (close_cleanup); | |
3411 | xfree (buf); | |
3412 | return -1; | |
3413 | } | |
3414 | else if (n == 0) | |
3415 | { | |
3416 | /* Read all there was. */ | |
3417 | do_cleanups (close_cleanup); | |
3418 | if (buf_pos == 0) | |
3419 | xfree (buf); | |
3420 | else | |
3421 | *buf_p = buf; | |
3422 | return buf_pos; | |
3423 | } | |
3424 | ||
3425 | buf_pos += n; | |
3426 | ||
3427 | /* If the buffer is filling up, expand it. */ | |
3428 | if (buf_alloc < buf_pos * 2) | |
3429 | { | |
3430 | buf_alloc *= 2; | |
3431 | buf = xrealloc (buf, buf_alloc); | |
3432 | } | |
3433 | ||
3434 | QUIT; | |
3435 | } | |
3436 | } | |
3437 | ||
3438 | /* Read target file FILENAME. Store the result in *BUF_P and return | |
3439 | the size of the transferred data. See the declaration in "target.h" | |
3440 | function for more information about the return value. */ | |
3441 | ||
3442 | LONGEST | |
3443 | target_fileio_read_alloc (const char *filename, gdb_byte **buf_p) | |
3444 | { | |
3445 | return target_fileio_read_alloc_1 (filename, buf_p, 0); | |
3446 | } | |
3447 | ||
3448 | /* Read target file FILENAME. The result is NUL-terminated and | |
3449 | returned as a string, allocated using xmalloc. If an error occurs | |
3450 | or the transfer is unsupported, NULL is returned. Empty objects | |
3451 | are returned as allocated but empty strings. A warning is issued | |
3452 | if the result contains any embedded NUL bytes. */ | |
3453 | ||
3454 | char * | |
3455 | target_fileio_read_stralloc (const char *filename) | |
3456 | { | |
39086a0e PA |
3457 | gdb_byte *buffer; |
3458 | char *bufstr; | |
7313baad UW |
3459 | LONGEST i, transferred; |
3460 | ||
39086a0e PA |
3461 | transferred = target_fileio_read_alloc_1 (filename, &buffer, 1); |
3462 | bufstr = (char *) buffer; | |
7313baad UW |
3463 | |
3464 | if (transferred < 0) | |
3465 | return NULL; | |
3466 | ||
3467 | if (transferred == 0) | |
3468 | return xstrdup (""); | |
3469 | ||
39086a0e | 3470 | bufstr[transferred] = 0; |
7313baad UW |
3471 | |
3472 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
39086a0e PA |
3473 | for (i = strlen (bufstr); i < transferred; i++) |
3474 | if (bufstr[i] != 0) | |
7313baad UW |
3475 | { |
3476 | warning (_("target file %s " | |
3477 | "contained unexpected null characters"), | |
3478 | filename); | |
3479 | break; | |
3480 | } | |
3481 | ||
39086a0e | 3482 | return bufstr; |
7313baad UW |
3483 | } |
3484 | ||
3485 | ||
e0d24f8d | 3486 | static int |
31568a15 TT |
3487 | default_region_ok_for_hw_watchpoint (struct target_ops *self, |
3488 | CORE_ADDR addr, int len) | |
e0d24f8d | 3489 | { |
f5656ead | 3490 | return (len <= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT); |
ccaa32c7 GS |
3491 | } |
3492 | ||
5009afc5 AS |
3493 | static int |
3494 | default_watchpoint_addr_within_range (struct target_ops *target, | |
3495 | CORE_ADDR addr, | |
3496 | CORE_ADDR start, int length) | |
3497 | { | |
3498 | return addr >= start && addr < start + length; | |
3499 | } | |
3500 | ||
c2250ad1 UW |
3501 | static struct gdbarch * |
3502 | default_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
3503 | { | |
f5656ead | 3504 | return target_gdbarch (); |
c2250ad1 UW |
3505 | } |
3506 | ||
c906108c | 3507 | static int |
fba45db2 | 3508 | return_zero (void) |
c906108c SS |
3509 | { |
3510 | return 0; | |
3511 | } | |
3512 | ||
ccaa32c7 GS |
3513 | static int |
3514 | return_minus_one (void) | |
3515 | { | |
3516 | return -1; | |
3517 | } | |
3518 | ||
1b67eb02 AS |
3519 | static void * |
3520 | return_null (void) | |
3521 | { | |
3522 | return 0; | |
3523 | } | |
3524 | ||
ed9a39eb JM |
3525 | /* |
3526 | * Find the next target down the stack from the specified target. | |
3527 | */ | |
3528 | ||
3529 | struct target_ops * | |
fba45db2 | 3530 | find_target_beneath (struct target_ops *t) |
ed9a39eb | 3531 | { |
258b763a | 3532 | return t->beneath; |
ed9a39eb JM |
3533 | } |
3534 | ||
8b06beed TT |
3535 | /* See target.h. */ |
3536 | ||
3537 | struct target_ops * | |
3538 | find_target_at (enum strata stratum) | |
3539 | { | |
3540 | struct target_ops *t; | |
3541 | ||
3542 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3543 | if (t->to_stratum == stratum) | |
3544 | return t; | |
3545 | ||
3546 | return NULL; | |
3547 | } | |
3548 | ||
c906108c SS |
3549 | \f |
3550 | /* The inferior process has died. Long live the inferior! */ | |
3551 | ||
3552 | void | |
fba45db2 | 3553 | generic_mourn_inferior (void) |
c906108c | 3554 | { |
7f9f62ba | 3555 | ptid_t ptid; |
c906108c | 3556 | |
7f9f62ba | 3557 | ptid = inferior_ptid; |
39f77062 | 3558 | inferior_ptid = null_ptid; |
7f9f62ba | 3559 | |
f59f708a PA |
3560 | /* Mark breakpoints uninserted in case something tries to delete a |
3561 | breakpoint while we delete the inferior's threads (which would | |
3562 | fail, since the inferior is long gone). */ | |
3563 | mark_breakpoints_out (); | |
3564 | ||
7f9f62ba PA |
3565 | if (!ptid_equal (ptid, null_ptid)) |
3566 | { | |
3567 | int pid = ptid_get_pid (ptid); | |
6c95b8df | 3568 | exit_inferior (pid); |
7f9f62ba PA |
3569 | } |
3570 | ||
f59f708a PA |
3571 | /* Note this wipes step-resume breakpoints, so needs to be done |
3572 | after exit_inferior, which ends up referencing the step-resume | |
3573 | breakpoints through clear_thread_inferior_resources. */ | |
c906108c | 3574 | breakpoint_init_inferior (inf_exited); |
f59f708a | 3575 | |
c906108c SS |
3576 | registers_changed (); |
3577 | ||
c906108c SS |
3578 | reopen_exec_file (); |
3579 | reinit_frame_cache (); | |
3580 | ||
9a4105ab AC |
3581 | if (deprecated_detach_hook) |
3582 | deprecated_detach_hook (); | |
c906108c SS |
3583 | } |
3584 | \f | |
fd0a2a6f MK |
3585 | /* Convert a normal process ID to a string. Returns the string in a |
3586 | static buffer. */ | |
c906108c SS |
3587 | |
3588 | char * | |
39f77062 | 3589 | normal_pid_to_str (ptid_t ptid) |
c906108c | 3590 | { |
fd0a2a6f | 3591 | static char buf[32]; |
c906108c | 3592 | |
5fff8fc0 | 3593 | xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid)); |
c906108c SS |
3594 | return buf; |
3595 | } | |
3596 | ||
2c0b251b | 3597 | static char * |
117de6a9 PA |
3598 | dummy_pid_to_str (struct target_ops *ops, ptid_t ptid) |
3599 | { | |
3600 | return normal_pid_to_str (ptid); | |
3601 | } | |
3602 | ||
9b4eba8e HZ |
3603 | /* Error-catcher for target_find_memory_regions. */ |
3604 | static int | |
2e73927c TT |
3605 | dummy_find_memory_regions (struct target_ops *self, |
3606 | find_memory_region_ftype ignore1, void *ignore2) | |
be4d1333 | 3607 | { |
9b4eba8e | 3608 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3609 | return 0; |
3610 | } | |
3611 | ||
9b4eba8e HZ |
3612 | /* Error-catcher for target_make_corefile_notes. */ |
3613 | static char * | |
fc6691b2 TT |
3614 | dummy_make_corefile_notes (struct target_ops *self, |
3615 | bfd *ignore1, int *ignore2) | |
be4d1333 | 3616 | { |
9b4eba8e | 3617 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3618 | return NULL; |
3619 | } | |
3620 | ||
c906108c SS |
3621 | /* Set up the handful of non-empty slots needed by the dummy target |
3622 | vector. */ | |
3623 | ||
3624 | static void | |
fba45db2 | 3625 | init_dummy_target (void) |
c906108c SS |
3626 | { |
3627 | dummy_target.to_shortname = "None"; | |
3628 | dummy_target.to_longname = "None"; | |
3629 | dummy_target.to_doc = ""; | |
c906108c | 3630 | dummy_target.to_create_inferior = find_default_create_inferior; |
9908b566 | 3631 | dummy_target.to_supports_non_stop = find_default_supports_non_stop; |
03583c20 UW |
3632 | dummy_target.to_supports_disable_randomization |
3633 | = find_default_supports_disable_randomization; | |
117de6a9 | 3634 | dummy_target.to_pid_to_str = dummy_pid_to_str; |
c906108c | 3635 | dummy_target.to_stratum = dummy_stratum; |
c35b1492 PA |
3636 | dummy_target.to_has_all_memory = (int (*) (struct target_ops *)) return_zero; |
3637 | dummy_target.to_has_memory = (int (*) (struct target_ops *)) return_zero; | |
3638 | dummy_target.to_has_stack = (int (*) (struct target_ops *)) return_zero; | |
3639 | dummy_target.to_has_registers = (int (*) (struct target_ops *)) return_zero; | |
aeaec162 TT |
3640 | dummy_target.to_has_execution |
3641 | = (int (*) (struct target_ops *, ptid_t)) return_zero; | |
c906108c | 3642 | dummy_target.to_magic = OPS_MAGIC; |
1101cb7b TT |
3643 | |
3644 | install_dummy_methods (&dummy_target); | |
c906108c | 3645 | } |
c906108c | 3646 | \f |
c906108c | 3647 | static void |
fba45db2 | 3648 | debug_to_open (char *args, int from_tty) |
c906108c SS |
3649 | { |
3650 | debug_target.to_open (args, from_tty); | |
3651 | ||
96baa820 | 3652 | fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty); |
c906108c SS |
3653 | } |
3654 | ||
f1c07ab0 | 3655 | void |
460014f5 | 3656 | target_close (struct target_ops *targ) |
f1c07ab0 | 3657 | { |
7fdc1521 TT |
3658 | gdb_assert (!target_is_pushed (targ)); |
3659 | ||
f1c07ab0 | 3660 | if (targ->to_xclose != NULL) |
460014f5 | 3661 | targ->to_xclose (targ); |
f1c07ab0 | 3662 | else if (targ->to_close != NULL) |
de90e03d | 3663 | targ->to_close (targ); |
947b8855 PA |
3664 | |
3665 | if (targetdebug) | |
460014f5 | 3666 | fprintf_unfiltered (gdb_stdlog, "target_close ()\n"); |
f1c07ab0 AC |
3667 | } |
3668 | ||
136d6dae VP |
3669 | void |
3670 | target_attach (char *args, int from_tty) | |
3671 | { | |
e9a29200 TT |
3672 | current_target.to_attach (¤t_target, args, from_tty); |
3673 | if (targetdebug) | |
3674 | fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n", | |
3675 | args, from_tty); | |
136d6dae VP |
3676 | } |
3677 | ||
28439f5e PA |
3678 | int |
3679 | target_thread_alive (ptid_t ptid) | |
c906108c | 3680 | { |
28439f5e | 3681 | struct target_ops *t; |
5d502164 | 3682 | |
28439f5e PA |
3683 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3684 | { | |
3685 | if (t->to_thread_alive != NULL) | |
3686 | { | |
3687 | int retval; | |
c906108c | 3688 | |
28439f5e PA |
3689 | retval = t->to_thread_alive (t, ptid); |
3690 | if (targetdebug) | |
3691 | fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n", | |
dfd4cc63 | 3692 | ptid_get_pid (ptid), retval); |
28439f5e PA |
3693 | |
3694 | return retval; | |
3695 | } | |
3696 | } | |
3697 | ||
3698 | return 0; | |
3699 | } | |
3700 | ||
3701 | void | |
3702 | target_find_new_threads (void) | |
3703 | { | |
3704 | struct target_ops *t; | |
5d502164 | 3705 | |
28439f5e PA |
3706 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3707 | { | |
3708 | if (t->to_find_new_threads != NULL) | |
3709 | { | |
3710 | t->to_find_new_threads (t); | |
3711 | if (targetdebug) | |
3712 | fprintf_unfiltered (gdb_stdlog, "target_find_new_threads ()\n"); | |
3713 | ||
3714 | return; | |
3715 | } | |
3716 | } | |
c906108c SS |
3717 | } |
3718 | ||
d914c394 SS |
3719 | void |
3720 | target_stop (ptid_t ptid) | |
3721 | { | |
3722 | if (!may_stop) | |
3723 | { | |
3724 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3725 | return; | |
3726 | } | |
3727 | ||
1eab8a48 | 3728 | (*current_target.to_stop) (¤t_target, ptid); |
d914c394 SS |
3729 | } |
3730 | ||
c906108c | 3731 | static void |
f045800c | 3732 | debug_to_post_attach (struct target_ops *self, int pid) |
c906108c | 3733 | { |
f045800c | 3734 | debug_target.to_post_attach (&debug_target, pid); |
c906108c | 3735 | |
28439f5e | 3736 | fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid); |
c906108c SS |
3737 | } |
3738 | ||
09826ec5 PA |
3739 | /* Concatenate ELEM to LIST, a comma separate list, and return the |
3740 | result. The LIST incoming argument is released. */ | |
3741 | ||
3742 | static char * | |
3743 | str_comma_list_concat_elem (char *list, const char *elem) | |
3744 | { | |
3745 | if (list == NULL) | |
3746 | return xstrdup (elem); | |
3747 | else | |
3748 | return reconcat (list, list, ", ", elem, (char *) NULL); | |
3749 | } | |
3750 | ||
3751 | /* Helper for target_options_to_string. If OPT is present in | |
3752 | TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET. | |
3753 | Returns the new resulting string. OPT is removed from | |
3754 | TARGET_OPTIONS. */ | |
3755 | ||
3756 | static char * | |
3757 | do_option (int *target_options, char *ret, | |
3758 | int opt, char *opt_str) | |
3759 | { | |
3760 | if ((*target_options & opt) != 0) | |
3761 | { | |
3762 | ret = str_comma_list_concat_elem (ret, opt_str); | |
3763 | *target_options &= ~opt; | |
3764 | } | |
3765 | ||
3766 | return ret; | |
3767 | } | |
3768 | ||
3769 | char * | |
3770 | target_options_to_string (int target_options) | |
3771 | { | |
3772 | char *ret = NULL; | |
3773 | ||
3774 | #define DO_TARG_OPTION(OPT) \ | |
3775 | ret = do_option (&target_options, ret, OPT, #OPT) | |
3776 | ||
3777 | DO_TARG_OPTION (TARGET_WNOHANG); | |
3778 | ||
3779 | if (target_options != 0) | |
3780 | ret = str_comma_list_concat_elem (ret, "unknown???"); | |
3781 | ||
3782 | if (ret == NULL) | |
3783 | ret = xstrdup (""); | |
3784 | return ret; | |
3785 | } | |
3786 | ||
bf0c5130 | 3787 | static void |
56be3814 UW |
3788 | debug_print_register (const char * func, |
3789 | struct regcache *regcache, int regno) | |
bf0c5130 | 3790 | { |
f8d29908 | 3791 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
5d502164 | 3792 | |
bf0c5130 | 3793 | fprintf_unfiltered (gdb_stdlog, "%s ", func); |
f8d29908 | 3794 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) |
f8d29908 UW |
3795 | && gdbarch_register_name (gdbarch, regno) != NULL |
3796 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') | |
3797 | fprintf_unfiltered (gdb_stdlog, "(%s)", | |
3798 | gdbarch_register_name (gdbarch, regno)); | |
bf0c5130 AC |
3799 | else |
3800 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
0ff58721 | 3801 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) |
bf0c5130 | 3802 | { |
e17a4113 | 3803 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
f8d29908 | 3804 | int i, size = register_size (gdbarch, regno); |
e362b510 | 3805 | gdb_byte buf[MAX_REGISTER_SIZE]; |
5d502164 | 3806 | |
0ff58721 | 3807 | regcache_raw_collect (regcache, regno, buf); |
bf0c5130 | 3808 | fprintf_unfiltered (gdb_stdlog, " = "); |
81c4a259 | 3809 | for (i = 0; i < size; i++) |
bf0c5130 AC |
3810 | { |
3811 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
3812 | } | |
81c4a259 | 3813 | if (size <= sizeof (LONGEST)) |
bf0c5130 | 3814 | { |
e17a4113 | 3815 | ULONGEST val = extract_unsigned_integer (buf, size, byte_order); |
5d502164 | 3816 | |
0b1553bc UW |
3817 | fprintf_unfiltered (gdb_stdlog, " %s %s", |
3818 | core_addr_to_string_nz (val), plongest (val)); | |
bf0c5130 AC |
3819 | } |
3820 | } | |
3821 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
3822 | } | |
3823 | ||
28439f5e PA |
3824 | void |
3825 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 3826 | { |
28439f5e | 3827 | struct target_ops *t; |
5d502164 | 3828 | |
28439f5e PA |
3829 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3830 | { | |
3831 | if (t->to_fetch_registers != NULL) | |
3832 | { | |
3833 | t->to_fetch_registers (t, regcache, regno); | |
3834 | if (targetdebug) | |
3835 | debug_print_register ("target_fetch_registers", regcache, regno); | |
3836 | return; | |
3837 | } | |
3838 | } | |
c906108c SS |
3839 | } |
3840 | ||
28439f5e PA |
3841 | void |
3842 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 3843 | { |
28439f5e | 3844 | struct target_ops *t; |
5d502164 | 3845 | |
d914c394 SS |
3846 | if (!may_write_registers) |
3847 | error (_("Writing to registers is not allowed (regno %d)"), regno); | |
3848 | ||
6b84065d TT |
3849 | current_target.to_store_registers (¤t_target, regcache, regno); |
3850 | if (targetdebug) | |
28439f5e | 3851 | { |
6b84065d | 3852 | debug_print_register ("target_store_registers", regcache, regno); |
28439f5e | 3853 | } |
c906108c SS |
3854 | } |
3855 | ||
dc146f7c VP |
3856 | int |
3857 | target_core_of_thread (ptid_t ptid) | |
3858 | { | |
3859 | struct target_ops *t; | |
3860 | ||
3861 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3862 | { | |
3863 | if (t->to_core_of_thread != NULL) | |
3864 | { | |
3865 | int retval = t->to_core_of_thread (t, ptid); | |
5d502164 | 3866 | |
dc146f7c | 3867 | if (targetdebug) |
3e43a32a MS |
3868 | fprintf_unfiltered (gdb_stdlog, |
3869 | "target_core_of_thread (%d) = %d\n", | |
dfd4cc63 | 3870 | ptid_get_pid (ptid), retval); |
dc146f7c VP |
3871 | return retval; |
3872 | } | |
3873 | } | |
3874 | ||
3875 | return -1; | |
3876 | } | |
3877 | ||
4a5e7a5b PA |
3878 | int |
3879 | target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3880 | { | |
3881 | struct target_ops *t; | |
3882 | ||
3883 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3884 | { | |
3885 | if (t->to_verify_memory != NULL) | |
3886 | { | |
3887 | int retval = t->to_verify_memory (t, data, memaddr, size); | |
5d502164 | 3888 | |
4a5e7a5b | 3889 | if (targetdebug) |
3e43a32a MS |
3890 | fprintf_unfiltered (gdb_stdlog, |
3891 | "target_verify_memory (%s, %s) = %d\n", | |
f5656ead | 3892 | paddress (target_gdbarch (), memaddr), |
4a5e7a5b PA |
3893 | pulongest (size), |
3894 | retval); | |
3895 | return retval; | |
3896 | } | |
3897 | } | |
3898 | ||
3899 | tcomplain (); | |
3900 | } | |
3901 | ||
9c06b0b4 TJB |
3902 | /* The documentation for this function is in its prototype declaration in |
3903 | target.h. */ | |
3904 | ||
3905 | int | |
3906 | target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
3907 | { | |
3908 | struct target_ops *t; | |
3909 | ||
3910 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3911 | if (t->to_insert_mask_watchpoint != NULL) | |
3912 | { | |
3913 | int ret; | |
3914 | ||
3915 | ret = t->to_insert_mask_watchpoint (t, addr, mask, rw); | |
3916 | ||
3917 | if (targetdebug) | |
3918 | fprintf_unfiltered (gdb_stdlog, "\ | |
3919 | target_insert_mask_watchpoint (%s, %s, %d) = %d\n", | |
3920 | core_addr_to_string (addr), | |
3921 | core_addr_to_string (mask), rw, ret); | |
3922 | ||
3923 | return ret; | |
3924 | } | |
3925 | ||
3926 | return 1; | |
3927 | } | |
3928 | ||
3929 | /* The documentation for this function is in its prototype declaration in | |
3930 | target.h. */ | |
3931 | ||
3932 | int | |
3933 | target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
3934 | { | |
3935 | struct target_ops *t; | |
3936 | ||
3937 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3938 | if (t->to_remove_mask_watchpoint != NULL) | |
3939 | { | |
3940 | int ret; | |
3941 | ||
3942 | ret = t->to_remove_mask_watchpoint (t, addr, mask, rw); | |
3943 | ||
3944 | if (targetdebug) | |
3945 | fprintf_unfiltered (gdb_stdlog, "\ | |
3946 | target_remove_mask_watchpoint (%s, %s, %d) = %d\n", | |
3947 | core_addr_to_string (addr), | |
3948 | core_addr_to_string (mask), rw, ret); | |
3949 | ||
3950 | return ret; | |
3951 | } | |
3952 | ||
3953 | return 1; | |
3954 | } | |
3955 | ||
3956 | /* The documentation for this function is in its prototype declaration | |
3957 | in target.h. */ | |
3958 | ||
3959 | int | |
3960 | target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask) | |
3961 | { | |
3962 | struct target_ops *t; | |
3963 | ||
3964 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3965 | if (t->to_masked_watch_num_registers != NULL) | |
3966 | return t->to_masked_watch_num_registers (t, addr, mask); | |
3967 | ||
3968 | return -1; | |
3969 | } | |
3970 | ||
f1310107 TJB |
3971 | /* The documentation for this function is in its prototype declaration |
3972 | in target.h. */ | |
3973 | ||
3974 | int | |
3975 | target_ranged_break_num_registers (void) | |
3976 | { | |
3977 | struct target_ops *t; | |
3978 | ||
3979 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3980 | if (t->to_ranged_break_num_registers != NULL) | |
3981 | return t->to_ranged_break_num_registers (t); | |
3982 | ||
3983 | return -1; | |
3984 | } | |
3985 | ||
02d27625 MM |
3986 | /* See target.h. */ |
3987 | ||
02d27625 MM |
3988 | struct btrace_target_info * |
3989 | target_enable_btrace (ptid_t ptid) | |
3990 | { | |
3991 | struct target_ops *t; | |
3992 | ||
3993 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3994 | if (t->to_enable_btrace != NULL) | |
e3c49f88 | 3995 | return t->to_enable_btrace (t, ptid); |
02d27625 MM |
3996 | |
3997 | tcomplain (); | |
3998 | return NULL; | |
3999 | } | |
4000 | ||
4001 | /* See target.h. */ | |
4002 | ||
4003 | void | |
4004 | target_disable_btrace (struct btrace_target_info *btinfo) | |
4005 | { | |
4006 | struct target_ops *t; | |
4007 | ||
4008 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4009 | if (t->to_disable_btrace != NULL) | |
d92f7ee3 | 4010 | { |
25e95349 | 4011 | t->to_disable_btrace (t, btinfo); |
d92f7ee3 SDJ |
4012 | return; |
4013 | } | |
02d27625 MM |
4014 | |
4015 | tcomplain (); | |
4016 | } | |
4017 | ||
4018 | /* See target.h. */ | |
4019 | ||
4020 | void | |
4021 | target_teardown_btrace (struct btrace_target_info *btinfo) | |
4022 | { | |
4023 | struct target_ops *t; | |
4024 | ||
4025 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4026 | if (t->to_teardown_btrace != NULL) | |
d92f7ee3 | 4027 | { |
1777056d | 4028 | t->to_teardown_btrace (t, btinfo); |
d92f7ee3 SDJ |
4029 | return; |
4030 | } | |
02d27625 MM |
4031 | |
4032 | tcomplain (); | |
4033 | } | |
4034 | ||
4035 | /* See target.h. */ | |
4036 | ||
969c39fb MM |
4037 | enum btrace_error |
4038 | target_read_btrace (VEC (btrace_block_s) **btrace, | |
4039 | struct btrace_target_info *btinfo, | |
02d27625 MM |
4040 | enum btrace_read_type type) |
4041 | { | |
4042 | struct target_ops *t; | |
4043 | ||
4044 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4045 | if (t->to_read_btrace != NULL) | |
39c49f83 | 4046 | return t->to_read_btrace (t, btrace, btinfo, type); |
02d27625 MM |
4047 | |
4048 | tcomplain (); | |
969c39fb | 4049 | return BTRACE_ERR_NOT_SUPPORTED; |
02d27625 MM |
4050 | } |
4051 | ||
d02ed0bb MM |
4052 | /* See target.h. */ |
4053 | ||
7c1687a9 MM |
4054 | void |
4055 | target_stop_recording (void) | |
4056 | { | |
4057 | struct target_ops *t; | |
4058 | ||
4059 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4060 | if (t->to_stop_recording != NULL) | |
4061 | { | |
c6cd7c02 | 4062 | t->to_stop_recording (t); |
7c1687a9 MM |
4063 | return; |
4064 | } | |
4065 | ||
4066 | /* This is optional. */ | |
4067 | } | |
4068 | ||
4069 | /* See target.h. */ | |
4070 | ||
d02ed0bb MM |
4071 | void |
4072 | target_info_record (void) | |
4073 | { | |
4074 | struct target_ops *t; | |
4075 | ||
4076 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4077 | if (t->to_info_record != NULL) | |
4078 | { | |
630d6a4a | 4079 | t->to_info_record (t); |
d02ed0bb MM |
4080 | return; |
4081 | } | |
4082 | ||
4083 | tcomplain (); | |
4084 | } | |
4085 | ||
4086 | /* See target.h. */ | |
4087 | ||
4088 | void | |
85e1311a | 4089 | target_save_record (const char *filename) |
d02ed0bb MM |
4090 | { |
4091 | struct target_ops *t; | |
4092 | ||
4093 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4094 | if (t->to_save_record != NULL) | |
4095 | { | |
1390f529 | 4096 | t->to_save_record (t, filename); |
d02ed0bb MM |
4097 | return; |
4098 | } | |
4099 | ||
4100 | tcomplain (); | |
4101 | } | |
4102 | ||
4103 | /* See target.h. */ | |
4104 | ||
4105 | int | |
4106 | target_supports_delete_record (void) | |
4107 | { | |
4108 | struct target_ops *t; | |
4109 | ||
4110 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4111 | if (t->to_delete_record != NULL) | |
4112 | return 1; | |
4113 | ||
4114 | return 0; | |
4115 | } | |
4116 | ||
4117 | /* See target.h. */ | |
4118 | ||
4119 | void | |
4120 | target_delete_record (void) | |
4121 | { | |
4122 | struct target_ops *t; | |
4123 | ||
4124 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4125 | if (t->to_delete_record != NULL) | |
4126 | { | |
d1b55219 | 4127 | t->to_delete_record (t); |
d02ed0bb MM |
4128 | return; |
4129 | } | |
4130 | ||
4131 | tcomplain (); | |
4132 | } | |
4133 | ||
4134 | /* See target.h. */ | |
4135 | ||
4136 | int | |
4137 | target_record_is_replaying (void) | |
4138 | { | |
4139 | struct target_ops *t; | |
4140 | ||
4141 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4142 | if (t->to_record_is_replaying != NULL) | |
1c63c994 | 4143 | return t->to_record_is_replaying (t); |
d02ed0bb MM |
4144 | |
4145 | return 0; | |
4146 | } | |
4147 | ||
4148 | /* See target.h. */ | |
4149 | ||
4150 | void | |
4151 | target_goto_record_begin (void) | |
4152 | { | |
4153 | struct target_ops *t; | |
4154 | ||
4155 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4156 | if (t->to_goto_record_begin != NULL) | |
4157 | { | |
08475817 | 4158 | t->to_goto_record_begin (t); |
d02ed0bb MM |
4159 | return; |
4160 | } | |
4161 | ||
4162 | tcomplain (); | |
4163 | } | |
4164 | ||
4165 | /* See target.h. */ | |
4166 | ||
4167 | void | |
4168 | target_goto_record_end (void) | |
4169 | { | |
4170 | struct target_ops *t; | |
4171 | ||
4172 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4173 | if (t->to_goto_record_end != NULL) | |
4174 | { | |
307a1b91 | 4175 | t->to_goto_record_end (t); |
d02ed0bb MM |
4176 | return; |
4177 | } | |
4178 | ||
4179 | tcomplain (); | |
4180 | } | |
4181 | ||
4182 | /* See target.h. */ | |
4183 | ||
4184 | void | |
4185 | target_goto_record (ULONGEST insn) | |
4186 | { | |
4187 | struct target_ops *t; | |
4188 | ||
4189 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4190 | if (t->to_goto_record != NULL) | |
4191 | { | |
606183ac | 4192 | t->to_goto_record (t, insn); |
d02ed0bb MM |
4193 | return; |
4194 | } | |
4195 | ||
4196 | tcomplain (); | |
4197 | } | |
4198 | ||
67c86d06 MM |
4199 | /* See target.h. */ |
4200 | ||
4201 | void | |
4202 | target_insn_history (int size, int flags) | |
4203 | { | |
4204 | struct target_ops *t; | |
4205 | ||
4206 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4207 | if (t->to_insn_history != NULL) | |
4208 | { | |
7a6c5609 | 4209 | t->to_insn_history (t, size, flags); |
67c86d06 MM |
4210 | return; |
4211 | } | |
4212 | ||
4213 | tcomplain (); | |
4214 | } | |
4215 | ||
4216 | /* See target.h. */ | |
4217 | ||
4218 | void | |
4219 | target_insn_history_from (ULONGEST from, int size, int flags) | |
4220 | { | |
4221 | struct target_ops *t; | |
4222 | ||
4223 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4224 | if (t->to_insn_history_from != NULL) | |
4225 | { | |
9abc3ff3 | 4226 | t->to_insn_history_from (t, from, size, flags); |
67c86d06 MM |
4227 | return; |
4228 | } | |
4229 | ||
4230 | tcomplain (); | |
4231 | } | |
4232 | ||
4233 | /* See target.h. */ | |
4234 | ||
4235 | void | |
4236 | target_insn_history_range (ULONGEST begin, ULONGEST end, int flags) | |
4237 | { | |
4238 | struct target_ops *t; | |
4239 | ||
4240 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4241 | if (t->to_insn_history_range != NULL) | |
4242 | { | |
4e99c6b7 | 4243 | t->to_insn_history_range (t, begin, end, flags); |
67c86d06 MM |
4244 | return; |
4245 | } | |
4246 | ||
4247 | tcomplain (); | |
4248 | } | |
4249 | ||
15984c13 MM |
4250 | /* See target.h. */ |
4251 | ||
4252 | void | |
4253 | target_call_history (int size, int flags) | |
4254 | { | |
4255 | struct target_ops *t; | |
4256 | ||
4257 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4258 | if (t->to_call_history != NULL) | |
4259 | { | |
5df2fcba | 4260 | t->to_call_history (t, size, flags); |
15984c13 MM |
4261 | return; |
4262 | } | |
4263 | ||
4264 | tcomplain (); | |
4265 | } | |
4266 | ||
4267 | /* See target.h. */ | |
4268 | ||
4269 | void | |
4270 | target_call_history_from (ULONGEST begin, int size, int flags) | |
4271 | { | |
4272 | struct target_ops *t; | |
4273 | ||
4274 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4275 | if (t->to_call_history_from != NULL) | |
4276 | { | |
ec0aea04 | 4277 | t->to_call_history_from (t, begin, size, flags); |
15984c13 MM |
4278 | return; |
4279 | } | |
4280 | ||
4281 | tcomplain (); | |
4282 | } | |
4283 | ||
4284 | /* See target.h. */ | |
4285 | ||
4286 | void | |
4287 | target_call_history_range (ULONGEST begin, ULONGEST end, int flags) | |
4288 | { | |
4289 | struct target_ops *t; | |
4290 | ||
4291 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4292 | if (t->to_call_history_range != NULL) | |
4293 | { | |
f0d960ea | 4294 | t->to_call_history_range (t, begin, end, flags); |
15984c13 MM |
4295 | return; |
4296 | } | |
4297 | ||
4298 | tcomplain (); | |
4299 | } | |
4300 | ||
c906108c | 4301 | static void |
f32dbf8c | 4302 | debug_to_prepare_to_store (struct target_ops *self, struct regcache *regcache) |
c906108c | 4303 | { |
f32dbf8c | 4304 | debug_target.to_prepare_to_store (&debug_target, regcache); |
c906108c | 4305 | |
96baa820 | 4306 | fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n"); |
c906108c SS |
4307 | } |
4308 | ||
ea001bdc MM |
4309 | /* See target.h. */ |
4310 | ||
4311 | const struct frame_unwind * | |
4312 | target_get_unwinder (void) | |
4313 | { | |
4314 | struct target_ops *t; | |
4315 | ||
4316 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4317 | if (t->to_get_unwinder != NULL) | |
4318 | return t->to_get_unwinder; | |
4319 | ||
4320 | return NULL; | |
4321 | } | |
4322 | ||
4323 | /* See target.h. */ | |
4324 | ||
4325 | const struct frame_unwind * | |
4326 | target_get_tailcall_unwinder (void) | |
4327 | { | |
4328 | struct target_ops *t; | |
4329 | ||
4330 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4331 | if (t->to_get_tailcall_unwinder != NULL) | |
4332 | return t->to_get_tailcall_unwinder; | |
4333 | ||
4334 | return NULL; | |
4335 | } | |
4336 | ||
118e6252 MM |
4337 | /* See target.h. */ |
4338 | ||
4339 | CORE_ADDR | |
4340 | forward_target_decr_pc_after_break (struct target_ops *ops, | |
4341 | struct gdbarch *gdbarch) | |
4342 | { | |
4343 | for (; ops != NULL; ops = ops->beneath) | |
4344 | if (ops->to_decr_pc_after_break != NULL) | |
4345 | return ops->to_decr_pc_after_break (ops, gdbarch); | |
4346 | ||
4347 | return gdbarch_decr_pc_after_break (gdbarch); | |
4348 | } | |
4349 | ||
4350 | /* See target.h. */ | |
4351 | ||
4352 | CORE_ADDR | |
4353 | target_decr_pc_after_break (struct gdbarch *gdbarch) | |
4354 | { | |
4355 | return forward_target_decr_pc_after_break (current_target.beneath, gdbarch); | |
4356 | } | |
4357 | ||
c906108c | 4358 | static int |
961cb7b5 | 4359 | deprecated_debug_xfer_memory (CORE_ADDR memaddr, bfd_byte *myaddr, int len, |
c8e73a31 AC |
4360 | int write, struct mem_attrib *attrib, |
4361 | struct target_ops *target) | |
c906108c SS |
4362 | { |
4363 | int retval; | |
4364 | ||
c8e73a31 AC |
4365 | retval = debug_target.deprecated_xfer_memory (memaddr, myaddr, len, write, |
4366 | attrib, target); | |
c906108c | 4367 | |
96baa820 | 4368 | fprintf_unfiltered (gdb_stdlog, |
53b71562 | 4369 | "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d", |
f5656ead | 4370 | paddress (target_gdbarch (), memaddr), len, |
5af949e3 | 4371 | write ? "write" : "read", retval); |
c906108c | 4372 | |
c906108c SS |
4373 | if (retval > 0) |
4374 | { | |
4375 | int i; | |
4376 | ||
96baa820 | 4377 | fputs_unfiltered (", bytes =", gdb_stdlog); |
c906108c SS |
4378 | for (i = 0; i < retval; i++) |
4379 | { | |
53b71562 | 4380 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
333dabeb DJ |
4381 | { |
4382 | if (targetdebug < 2 && i > 0) | |
4383 | { | |
4384 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
4385 | break; | |
4386 | } | |
4387 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
4388 | } | |
2bc416ba | 4389 | |
96baa820 | 4390 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
c906108c SS |
4391 | } |
4392 | } | |
4393 | ||
96baa820 | 4394 | fputc_unfiltered ('\n', gdb_stdlog); |
c906108c SS |
4395 | |
4396 | return retval; | |
4397 | } | |
4398 | ||
4399 | static void | |
fba45db2 | 4400 | debug_to_files_info (struct target_ops *target) |
c906108c SS |
4401 | { |
4402 | debug_target.to_files_info (target); | |
4403 | ||
96baa820 | 4404 | fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n"); |
c906108c SS |
4405 | } |
4406 | ||
4407 | static int | |
3db08215 | 4408 | debug_to_insert_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, |
a6d9a66e | 4409 | struct bp_target_info *bp_tgt) |
c906108c SS |
4410 | { |
4411 | int retval; | |
4412 | ||
6b84065d | 4413 | retval = debug_target.to_insert_breakpoint (&debug_target, gdbarch, bp_tgt); |
c906108c | 4414 | |
96baa820 | 4415 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
4416 | "target_insert_breakpoint (%s, xxx) = %ld\n", |
4417 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 4418 | (unsigned long) retval); |
c906108c SS |
4419 | return retval; |
4420 | } | |
4421 | ||
4422 | static int | |
3db08215 | 4423 | debug_to_remove_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, |
a6d9a66e | 4424 | struct bp_target_info *bp_tgt) |
c906108c SS |
4425 | { |
4426 | int retval; | |
4427 | ||
6b84065d | 4428 | retval = debug_target.to_remove_breakpoint (&debug_target, gdbarch, bp_tgt); |
c906108c | 4429 | |
96baa820 | 4430 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
4431 | "target_remove_breakpoint (%s, xxx) = %ld\n", |
4432 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 4433 | (unsigned long) retval); |
c906108c SS |
4434 | return retval; |
4435 | } | |
4436 | ||
ccaa32c7 | 4437 | static int |
5461485a TT |
4438 | debug_to_can_use_hw_breakpoint (struct target_ops *self, |
4439 | int type, int cnt, int from_tty) | |
ccaa32c7 GS |
4440 | { |
4441 | int retval; | |
4442 | ||
5461485a TT |
4443 | retval = debug_target.to_can_use_hw_breakpoint (&debug_target, |
4444 | type, cnt, from_tty); | |
ccaa32c7 GS |
4445 | |
4446 | fprintf_unfiltered (gdb_stdlog, | |
4447 | "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n", | |
4448 | (unsigned long) type, | |
4449 | (unsigned long) cnt, | |
4450 | (unsigned long) from_tty, | |
4451 | (unsigned long) retval); | |
4452 | return retval; | |
4453 | } | |
4454 | ||
e0d24f8d | 4455 | static int |
31568a15 TT |
4456 | debug_to_region_ok_for_hw_watchpoint (struct target_ops *self, |
4457 | CORE_ADDR addr, int len) | |
e0d24f8d WZ |
4458 | { |
4459 | CORE_ADDR retval; | |
4460 | ||
31568a15 TT |
4461 | retval = debug_target.to_region_ok_for_hw_watchpoint (&debug_target, |
4462 | addr, len); | |
e0d24f8d WZ |
4463 | |
4464 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4465 | "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n", |
4466 | core_addr_to_string (addr), (unsigned long) len, | |
4467 | core_addr_to_string (retval)); | |
e0d24f8d WZ |
4468 | return retval; |
4469 | } | |
4470 | ||
0cf6dd15 | 4471 | static int |
c3a5ff89 TT |
4472 | debug_to_can_accel_watchpoint_condition (struct target_ops *self, |
4473 | CORE_ADDR addr, int len, int rw, | |
0cf6dd15 TJB |
4474 | struct expression *cond) |
4475 | { | |
4476 | int retval; | |
4477 | ||
c3a5ff89 TT |
4478 | retval = debug_target.to_can_accel_watchpoint_condition (&debug_target, |
4479 | addr, len, | |
3e43a32a | 4480 | rw, cond); |
0cf6dd15 TJB |
4481 | |
4482 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
4483 | "target_can_accel_watchpoint_condition " |
4484 | "(%s, %d, %d, %s) = %ld\n", | |
bd91e7ae OS |
4485 | core_addr_to_string (addr), len, rw, |
4486 | host_address_to_string (cond), (unsigned long) retval); | |
0cf6dd15 TJB |
4487 | return retval; |
4488 | } | |
4489 | ||
ccaa32c7 | 4490 | static int |
6a109b6b | 4491 | debug_to_stopped_by_watchpoint (struct target_ops *ops) |
ccaa32c7 GS |
4492 | { |
4493 | int retval; | |
4494 | ||
6a109b6b | 4495 | retval = debug_target.to_stopped_by_watchpoint (&debug_target); |
ccaa32c7 GS |
4496 | |
4497 | fprintf_unfiltered (gdb_stdlog, | |
d92524f1 | 4498 | "target_stopped_by_watchpoint () = %ld\n", |
ccaa32c7 GS |
4499 | (unsigned long) retval); |
4500 | return retval; | |
4501 | } | |
4502 | ||
4aa7a7f5 JJ |
4503 | static int |
4504 | debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr) | |
ccaa32c7 | 4505 | { |
4aa7a7f5 | 4506 | int retval; |
ccaa32c7 | 4507 | |
4aa7a7f5 | 4508 | retval = debug_target.to_stopped_data_address (target, addr); |
ccaa32c7 GS |
4509 | |
4510 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4511 | "target_stopped_data_address ([%s]) = %ld\n", |
4512 | core_addr_to_string (*addr), | |
4aa7a7f5 | 4513 | (unsigned long)retval); |
ccaa32c7 GS |
4514 | return retval; |
4515 | } | |
4516 | ||
5009afc5 AS |
4517 | static int |
4518 | debug_to_watchpoint_addr_within_range (struct target_ops *target, | |
4519 | CORE_ADDR addr, | |
4520 | CORE_ADDR start, int length) | |
4521 | { | |
4522 | int retval; | |
4523 | ||
4524 | retval = debug_target.to_watchpoint_addr_within_range (target, addr, | |
4525 | start, length); | |
4526 | ||
4527 | fprintf_filtered (gdb_stdlog, | |
bd91e7ae OS |
4528 | "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n", |
4529 | core_addr_to_string (addr), core_addr_to_string (start), | |
4530 | length, retval); | |
5009afc5 AS |
4531 | return retval; |
4532 | } | |
4533 | ||
ccaa32c7 | 4534 | static int |
23a26771 TT |
4535 | debug_to_insert_hw_breakpoint (struct target_ops *self, |
4536 | struct gdbarch *gdbarch, | |
a6d9a66e | 4537 | struct bp_target_info *bp_tgt) |
ccaa32c7 GS |
4538 | { |
4539 | int retval; | |
4540 | ||
23a26771 TT |
4541 | retval = debug_target.to_insert_hw_breakpoint (&debug_target, |
4542 | gdbarch, bp_tgt); | |
ccaa32c7 GS |
4543 | |
4544 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4545 | "target_insert_hw_breakpoint (%s, xxx) = %ld\n", |
4546 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
4547 | (unsigned long) retval); |
4548 | return retval; | |
4549 | } | |
4550 | ||
4551 | static int | |
a64dc96c TT |
4552 | debug_to_remove_hw_breakpoint (struct target_ops *self, |
4553 | struct gdbarch *gdbarch, | |
a6d9a66e | 4554 | struct bp_target_info *bp_tgt) |
ccaa32c7 GS |
4555 | { |
4556 | int retval; | |
4557 | ||
a64dc96c TT |
4558 | retval = debug_target.to_remove_hw_breakpoint (&debug_target, |
4559 | gdbarch, bp_tgt); | |
ccaa32c7 GS |
4560 | |
4561 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4562 | "target_remove_hw_breakpoint (%s, xxx) = %ld\n", |
4563 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
4564 | (unsigned long) retval); |
4565 | return retval; | |
4566 | } | |
4567 | ||
4568 | static int | |
7bb99c53 TT |
4569 | debug_to_insert_watchpoint (struct target_ops *self, |
4570 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 4571 | struct expression *cond) |
ccaa32c7 GS |
4572 | { |
4573 | int retval; | |
4574 | ||
7bb99c53 TT |
4575 | retval = debug_target.to_insert_watchpoint (&debug_target, |
4576 | addr, len, type, cond); | |
ccaa32c7 GS |
4577 | |
4578 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4579 | "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n", |
4580 | core_addr_to_string (addr), len, type, | |
4581 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
4582 | return retval; |
4583 | } | |
4584 | ||
4585 | static int | |
11b5219a TT |
4586 | debug_to_remove_watchpoint (struct target_ops *self, |
4587 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 4588 | struct expression *cond) |
ccaa32c7 GS |
4589 | { |
4590 | int retval; | |
4591 | ||
11b5219a TT |
4592 | retval = debug_target.to_remove_watchpoint (&debug_target, |
4593 | addr, len, type, cond); | |
ccaa32c7 GS |
4594 | |
4595 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4596 | "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n", |
4597 | core_addr_to_string (addr), len, type, | |
4598 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
4599 | return retval; |
4600 | } | |
4601 | ||
c906108c | 4602 | static void |
c42bf286 | 4603 | debug_to_terminal_init (struct target_ops *self) |
c906108c | 4604 | { |
c42bf286 | 4605 | debug_target.to_terminal_init (&debug_target); |
c906108c | 4606 | |
96baa820 | 4607 | fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n"); |
c906108c SS |
4608 | } |
4609 | ||
4610 | static void | |
d2f640d4 | 4611 | debug_to_terminal_inferior (struct target_ops *self) |
c906108c | 4612 | { |
d2f640d4 | 4613 | debug_target.to_terminal_inferior (&debug_target); |
c906108c | 4614 | |
96baa820 | 4615 | fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n"); |
c906108c SS |
4616 | } |
4617 | ||
4618 | static void | |
2e1e1a19 | 4619 | debug_to_terminal_ours_for_output (struct target_ops *self) |
c906108c | 4620 | { |
2e1e1a19 | 4621 | debug_target.to_terminal_ours_for_output (&debug_target); |
c906108c | 4622 | |
96baa820 | 4623 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n"); |
c906108c SS |
4624 | } |
4625 | ||
4626 | static void | |
e3594fd1 | 4627 | debug_to_terminal_ours (struct target_ops *self) |
c906108c | 4628 | { |
e3594fd1 | 4629 | debug_target.to_terminal_ours (&debug_target); |
c906108c | 4630 | |
96baa820 | 4631 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n"); |
c906108c SS |
4632 | } |
4633 | ||
a790ad35 | 4634 | static void |
ae3bd431 | 4635 | debug_to_terminal_save_ours (struct target_ops *self) |
a790ad35 | 4636 | { |
ae3bd431 | 4637 | debug_target.to_terminal_save_ours (&debug_target); |
a790ad35 SC |
4638 | |
4639 | fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n"); | |
4640 | } | |
4641 | ||
c906108c | 4642 | static void |
0a4f40a2 TT |
4643 | debug_to_terminal_info (struct target_ops *self, |
4644 | const char *arg, int from_tty) | |
c906108c | 4645 | { |
0a4f40a2 | 4646 | debug_target.to_terminal_info (&debug_target, arg, from_tty); |
c906108c | 4647 | |
96baa820 | 4648 | fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg, |
c906108c SS |
4649 | from_tty); |
4650 | } | |
4651 | ||
c906108c | 4652 | static void |
71a9f134 | 4653 | debug_to_load (struct target_ops *self, char *args, int from_tty) |
c906108c | 4654 | { |
71a9f134 | 4655 | debug_target.to_load (&debug_target, args, from_tty); |
c906108c | 4656 | |
96baa820 | 4657 | fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty); |
c906108c SS |
4658 | } |
4659 | ||
c906108c | 4660 | static void |
2e97a79e | 4661 | debug_to_post_startup_inferior (struct target_ops *self, ptid_t ptid) |
c906108c | 4662 | { |
2e97a79e | 4663 | debug_target.to_post_startup_inferior (&debug_target, ptid); |
c906108c | 4664 | |
96baa820 | 4665 | fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n", |
dfd4cc63 | 4666 | ptid_get_pid (ptid)); |
c906108c SS |
4667 | } |
4668 | ||
77b06cd7 | 4669 | static int |
a863b201 | 4670 | debug_to_insert_fork_catchpoint (struct target_ops *self, int pid) |
c906108c | 4671 | { |
77b06cd7 TJB |
4672 | int retval; |
4673 | ||
a863b201 | 4674 | retval = debug_target.to_insert_fork_catchpoint (&debug_target, pid); |
77b06cd7 TJB |
4675 | |
4676 | fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d) = %d\n", | |
4677 | pid, retval); | |
c906108c | 4678 | |
77b06cd7 | 4679 | return retval; |
c906108c SS |
4680 | } |
4681 | ||
4682 | static int | |
973fc227 | 4683 | debug_to_remove_fork_catchpoint (struct target_ops *self, int pid) |
c906108c | 4684 | { |
c5aa993b | 4685 | int retval; |
c906108c | 4686 | |
973fc227 | 4687 | retval = debug_target.to_remove_fork_catchpoint (&debug_target, pid); |
c906108c | 4688 | |
96baa820 | 4689 | fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n", |
c5aa993b | 4690 | pid, retval); |
c906108c SS |
4691 | |
4692 | return retval; | |
4693 | } | |
4694 | ||
77b06cd7 | 4695 | static int |
3ecc7da0 | 4696 | debug_to_insert_vfork_catchpoint (struct target_ops *self, int pid) |
c906108c | 4697 | { |
77b06cd7 TJB |
4698 | int retval; |
4699 | ||
3ecc7da0 | 4700 | retval = debug_target.to_insert_vfork_catchpoint (&debug_target, pid); |
c906108c | 4701 | |
77b06cd7 TJB |
4702 | fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d) = %d\n", |
4703 | pid, retval); | |
4704 | ||
4705 | return retval; | |
c906108c SS |
4706 | } |
4707 | ||
4708 | static int | |
e98cf0cd | 4709 | debug_to_remove_vfork_catchpoint (struct target_ops *self, int pid) |
c906108c | 4710 | { |
c5aa993b | 4711 | int retval; |
c906108c | 4712 | |
e98cf0cd | 4713 | retval = debug_target.to_remove_vfork_catchpoint (&debug_target, pid); |
c906108c | 4714 | |
96baa820 | 4715 | fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n", |
c5aa993b | 4716 | pid, retval); |
c906108c SS |
4717 | |
4718 | return retval; | |
4719 | } | |
4720 | ||
77b06cd7 | 4721 | static int |
ba025e51 | 4722 | debug_to_insert_exec_catchpoint (struct target_ops *self, int pid) |
c906108c | 4723 | { |
77b06cd7 TJB |
4724 | int retval; |
4725 | ||
ba025e51 | 4726 | retval = debug_target.to_insert_exec_catchpoint (&debug_target, pid); |
c906108c | 4727 | |
77b06cd7 TJB |
4728 | fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d) = %d\n", |
4729 | pid, retval); | |
4730 | ||
4731 | return retval; | |
c906108c SS |
4732 | } |
4733 | ||
4734 | static int | |
758e29d2 | 4735 | debug_to_remove_exec_catchpoint (struct target_ops *self, int pid) |
c906108c | 4736 | { |
c5aa993b | 4737 | int retval; |
c906108c | 4738 | |
758e29d2 | 4739 | retval = debug_target.to_remove_exec_catchpoint (&debug_target, pid); |
c906108c | 4740 | |
96baa820 | 4741 | fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n", |
c5aa993b | 4742 | pid, retval); |
c906108c SS |
4743 | |
4744 | return retval; | |
4745 | } | |
4746 | ||
c906108c | 4747 | static int |
d796e1d6 TT |
4748 | debug_to_has_exited (struct target_ops *self, |
4749 | int pid, int wait_status, int *exit_status) | |
c906108c | 4750 | { |
c5aa993b | 4751 | int has_exited; |
c906108c | 4752 | |
d796e1d6 TT |
4753 | has_exited = debug_target.to_has_exited (&debug_target, |
4754 | pid, wait_status, exit_status); | |
c906108c | 4755 | |
96baa820 | 4756 | fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n", |
c5aa993b | 4757 | pid, wait_status, *exit_status, has_exited); |
c906108c SS |
4758 | |
4759 | return has_exited; | |
4760 | } | |
4761 | ||
c906108c | 4762 | static int |
da82bd6b | 4763 | debug_to_can_run (struct target_ops *self) |
c906108c SS |
4764 | { |
4765 | int retval; | |
4766 | ||
da82bd6b | 4767 | retval = debug_target.to_can_run (&debug_target); |
c906108c | 4768 | |
96baa820 | 4769 | fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval); |
c906108c SS |
4770 | |
4771 | return retval; | |
4772 | } | |
4773 | ||
c2250ad1 UW |
4774 | static struct gdbarch * |
4775 | debug_to_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
4776 | { | |
4777 | struct gdbarch *retval; | |
4778 | ||
4779 | retval = debug_target.to_thread_architecture (ops, ptid); | |
4780 | ||
3e43a32a MS |
4781 | fprintf_unfiltered (gdb_stdlog, |
4782 | "target_thread_architecture (%s) = %s [%s]\n", | |
4783 | target_pid_to_str (ptid), | |
4784 | host_address_to_string (retval), | |
c2250ad1 UW |
4785 | gdbarch_bfd_arch_info (retval)->printable_name); |
4786 | return retval; | |
4787 | } | |
4788 | ||
c906108c | 4789 | static void |
1eab8a48 | 4790 | debug_to_stop (struct target_ops *self, ptid_t ptid) |
c906108c | 4791 | { |
1eab8a48 | 4792 | debug_target.to_stop (&debug_target, ptid); |
c906108c | 4793 | |
94cc34af PA |
4794 | fprintf_unfiltered (gdb_stdlog, "target_stop (%s)\n", |
4795 | target_pid_to_str (ptid)); | |
c906108c SS |
4796 | } |
4797 | ||
96baa820 | 4798 | static void |
1aac633b | 4799 | debug_to_rcmd (struct target_ops *self, char *command, |
d9fcf2fb | 4800 | struct ui_file *outbuf) |
96baa820 | 4801 | { |
1aac633b | 4802 | debug_target.to_rcmd (&debug_target, command, outbuf); |
96baa820 JM |
4803 | fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command); |
4804 | } | |
4805 | ||
c906108c | 4806 | static char * |
8dd27370 | 4807 | debug_to_pid_to_exec_file (struct target_ops *self, int pid) |
c906108c | 4808 | { |
c5aa993b | 4809 | char *exec_file; |
c906108c | 4810 | |
8dd27370 | 4811 | exec_file = debug_target.to_pid_to_exec_file (&debug_target, pid); |
c906108c | 4812 | |
96baa820 | 4813 | fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n", |
c5aa993b | 4814 | pid, exec_file); |
c906108c SS |
4815 | |
4816 | return exec_file; | |
4817 | } | |
4818 | ||
c906108c | 4819 | static void |
fba45db2 | 4820 | setup_target_debug (void) |
c906108c SS |
4821 | { |
4822 | memcpy (&debug_target, ¤t_target, sizeof debug_target); | |
4823 | ||
4824 | current_target.to_open = debug_to_open; | |
c906108c | 4825 | current_target.to_post_attach = debug_to_post_attach; |
c906108c | 4826 | current_target.to_prepare_to_store = debug_to_prepare_to_store; |
c8e73a31 | 4827 | current_target.deprecated_xfer_memory = deprecated_debug_xfer_memory; |
c906108c SS |
4828 | current_target.to_files_info = debug_to_files_info; |
4829 | current_target.to_insert_breakpoint = debug_to_insert_breakpoint; | |
4830 | current_target.to_remove_breakpoint = debug_to_remove_breakpoint; | |
ccaa32c7 GS |
4831 | current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint; |
4832 | current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint; | |
4833 | current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint; | |
4834 | current_target.to_insert_watchpoint = debug_to_insert_watchpoint; | |
4835 | current_target.to_remove_watchpoint = debug_to_remove_watchpoint; | |
4836 | current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint; | |
4837 | current_target.to_stopped_data_address = debug_to_stopped_data_address; | |
3e43a32a MS |
4838 | current_target.to_watchpoint_addr_within_range |
4839 | = debug_to_watchpoint_addr_within_range; | |
4840 | current_target.to_region_ok_for_hw_watchpoint | |
4841 | = debug_to_region_ok_for_hw_watchpoint; | |
4842 | current_target.to_can_accel_watchpoint_condition | |
4843 | = debug_to_can_accel_watchpoint_condition; | |
c906108c SS |
4844 | current_target.to_terminal_init = debug_to_terminal_init; |
4845 | current_target.to_terminal_inferior = debug_to_terminal_inferior; | |
3e43a32a MS |
4846 | current_target.to_terminal_ours_for_output |
4847 | = debug_to_terminal_ours_for_output; | |
c906108c | 4848 | current_target.to_terminal_ours = debug_to_terminal_ours; |
a790ad35 | 4849 | current_target.to_terminal_save_ours = debug_to_terminal_save_ours; |
c906108c | 4850 | current_target.to_terminal_info = debug_to_terminal_info; |
c906108c | 4851 | current_target.to_load = debug_to_load; |
c906108c | 4852 | current_target.to_post_startup_inferior = debug_to_post_startup_inferior; |
c906108c SS |
4853 | current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint; |
4854 | current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint; | |
4855 | current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint; | |
4856 | current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint; | |
c906108c SS |
4857 | current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint; |
4858 | current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint; | |
c906108c | 4859 | current_target.to_has_exited = debug_to_has_exited; |
c906108c | 4860 | current_target.to_can_run = debug_to_can_run; |
c906108c | 4861 | current_target.to_stop = debug_to_stop; |
96baa820 | 4862 | current_target.to_rcmd = debug_to_rcmd; |
c906108c | 4863 | current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file; |
c2250ad1 | 4864 | current_target.to_thread_architecture = debug_to_thread_architecture; |
c906108c | 4865 | } |
c906108c | 4866 | \f |
c5aa993b JM |
4867 | |
4868 | static char targ_desc[] = | |
3e43a32a MS |
4869 | "Names of targets and files being debugged.\nShows the entire \ |
4870 | stack of targets currently in use (including the exec-file,\n\ | |
c906108c SS |
4871 | core-file, and process, if any), as well as the symbol file name."; |
4872 | ||
a53f3625 TT |
4873 | static void |
4874 | default_rcmd (struct target_ops *self, char *command, struct ui_file *output) | |
4875 | { | |
4876 | error (_("\"monitor\" command not supported by this target.")); | |
4877 | } | |
4878 | ||
96baa820 JM |
4879 | static void |
4880 | do_monitor_command (char *cmd, | |
4881 | int from_tty) | |
4882 | { | |
96baa820 JM |
4883 | target_rcmd (cmd, gdb_stdtarg); |
4884 | } | |
4885 | ||
87680a14 JB |
4886 | /* Print the name of each layers of our target stack. */ |
4887 | ||
4888 | static void | |
4889 | maintenance_print_target_stack (char *cmd, int from_tty) | |
4890 | { | |
4891 | struct target_ops *t; | |
4892 | ||
4893 | printf_filtered (_("The current target stack is:\n")); | |
4894 | ||
4895 | for (t = target_stack; t != NULL; t = t->beneath) | |
4896 | { | |
4897 | printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname); | |
4898 | } | |
4899 | } | |
4900 | ||
c6ebd6cf VP |
4901 | /* Controls if async mode is permitted. */ |
4902 | int target_async_permitted = 0; | |
4903 | ||
4904 | /* The set command writes to this variable. If the inferior is | |
b5419e49 | 4905 | executing, target_async_permitted is *not* updated. */ |
c6ebd6cf VP |
4906 | static int target_async_permitted_1 = 0; |
4907 | ||
4908 | static void | |
9401a810 PA |
4909 | set_target_async_command (char *args, int from_tty, |
4910 | struct cmd_list_element *c) | |
c6ebd6cf | 4911 | { |
c35b1492 | 4912 | if (have_live_inferiors ()) |
c6ebd6cf VP |
4913 | { |
4914 | target_async_permitted_1 = target_async_permitted; | |
4915 | error (_("Cannot change this setting while the inferior is running.")); | |
4916 | } | |
4917 | ||
4918 | target_async_permitted = target_async_permitted_1; | |
4919 | } | |
4920 | ||
4921 | static void | |
9401a810 PA |
4922 | show_target_async_command (struct ui_file *file, int from_tty, |
4923 | struct cmd_list_element *c, | |
4924 | const char *value) | |
c6ebd6cf | 4925 | { |
3e43a32a MS |
4926 | fprintf_filtered (file, |
4927 | _("Controlling the inferior in " | |
4928 | "asynchronous mode is %s.\n"), value); | |
c6ebd6cf VP |
4929 | } |
4930 | ||
d914c394 SS |
4931 | /* Temporary copies of permission settings. */ |
4932 | ||
4933 | static int may_write_registers_1 = 1; | |
4934 | static int may_write_memory_1 = 1; | |
4935 | static int may_insert_breakpoints_1 = 1; | |
4936 | static int may_insert_tracepoints_1 = 1; | |
4937 | static int may_insert_fast_tracepoints_1 = 1; | |
4938 | static int may_stop_1 = 1; | |
4939 | ||
4940 | /* Make the user-set values match the real values again. */ | |
4941 | ||
4942 | void | |
4943 | update_target_permissions (void) | |
4944 | { | |
4945 | may_write_registers_1 = may_write_registers; | |
4946 | may_write_memory_1 = may_write_memory; | |
4947 | may_insert_breakpoints_1 = may_insert_breakpoints; | |
4948 | may_insert_tracepoints_1 = may_insert_tracepoints; | |
4949 | may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints; | |
4950 | may_stop_1 = may_stop; | |
4951 | } | |
4952 | ||
4953 | /* The one function handles (most of) the permission flags in the same | |
4954 | way. */ | |
4955 | ||
4956 | static void | |
4957 | set_target_permissions (char *args, int from_tty, | |
4958 | struct cmd_list_element *c) | |
4959 | { | |
4960 | if (target_has_execution) | |
4961 | { | |
4962 | update_target_permissions (); | |
4963 | error (_("Cannot change this setting while the inferior is running.")); | |
4964 | } | |
4965 | ||
4966 | /* Make the real values match the user-changed values. */ | |
4967 | may_write_registers = may_write_registers_1; | |
4968 | may_insert_breakpoints = may_insert_breakpoints_1; | |
4969 | may_insert_tracepoints = may_insert_tracepoints_1; | |
4970 | may_insert_fast_tracepoints = may_insert_fast_tracepoints_1; | |
4971 | may_stop = may_stop_1; | |
4972 | update_observer_mode (); | |
4973 | } | |
4974 | ||
4975 | /* Set memory write permission independently of observer mode. */ | |
4976 | ||
4977 | static void | |
4978 | set_write_memory_permission (char *args, int from_tty, | |
4979 | struct cmd_list_element *c) | |
4980 | { | |
4981 | /* Make the real values match the user-changed values. */ | |
4982 | may_write_memory = may_write_memory_1; | |
4983 | update_observer_mode (); | |
4984 | } | |
4985 | ||
4986 | ||
c906108c | 4987 | void |
fba45db2 | 4988 | initialize_targets (void) |
c906108c SS |
4989 | { |
4990 | init_dummy_target (); | |
4991 | push_target (&dummy_target); | |
4992 | ||
4993 | add_info ("target", target_info, targ_desc); | |
4994 | add_info ("files", target_info, targ_desc); | |
4995 | ||
ccce17b0 | 4996 | add_setshow_zuinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
85c07804 AC |
4997 | Set target debugging."), _("\ |
4998 | Show target debugging."), _("\ | |
333dabeb DJ |
4999 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
5000 | verbose. Changes do not take effect until the next \"run\" or \"target\"\n\ | |
85c07804 | 5001 | command."), |
ccce17b0 YQ |
5002 | NULL, |
5003 | show_targetdebug, | |
5004 | &setdebuglist, &showdebuglist); | |
3a11626d | 5005 | |
2bc416ba | 5006 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
5007 | &trust_readonly, _("\ |
5008 | Set mode for reading from readonly sections."), _("\ | |
5009 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
5010 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
5011 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 5012 | result in significant performance improvement for remote targets."), |
2c5b56ce | 5013 | NULL, |
920d2a44 | 5014 | show_trust_readonly, |
e707bbc2 | 5015 | &setlist, &showlist); |
96baa820 JM |
5016 | |
5017 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 5018 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 5019 | |
87680a14 JB |
5020 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
5021 | _("Print the name of each layer of the internal target stack."), | |
5022 | &maintenanceprintlist); | |
5023 | ||
c6ebd6cf VP |
5024 | add_setshow_boolean_cmd ("target-async", no_class, |
5025 | &target_async_permitted_1, _("\ | |
5026 | Set whether gdb controls the inferior in asynchronous mode."), _("\ | |
5027 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
5028 | Tells gdb whether to control the inferior in asynchronous mode."), | |
9401a810 PA |
5029 | set_target_async_command, |
5030 | show_target_async_command, | |
c6ebd6cf VP |
5031 | &setlist, |
5032 | &showlist); | |
5033 | ||
d914c394 SS |
5034 | add_setshow_boolean_cmd ("may-write-registers", class_support, |
5035 | &may_write_registers_1, _("\ | |
5036 | Set permission to write into registers."), _("\ | |
5037 | Show permission to write into registers."), _("\ | |
5038 | When this permission is on, GDB may write into the target's registers.\n\ | |
5039 | Otherwise, any sort of write attempt will result in an error."), | |
5040 | set_target_permissions, NULL, | |
5041 | &setlist, &showlist); | |
5042 | ||
5043 | add_setshow_boolean_cmd ("may-write-memory", class_support, | |
5044 | &may_write_memory_1, _("\ | |
5045 | Set permission to write into target memory."), _("\ | |
5046 | Show permission to write into target memory."), _("\ | |
5047 | When this permission is on, GDB may write into the target's memory.\n\ | |
5048 | Otherwise, any sort of write attempt will result in an error."), | |
5049 | set_write_memory_permission, NULL, | |
5050 | &setlist, &showlist); | |
5051 | ||
5052 | add_setshow_boolean_cmd ("may-insert-breakpoints", class_support, | |
5053 | &may_insert_breakpoints_1, _("\ | |
5054 | Set permission to insert breakpoints in the target."), _("\ | |
5055 | Show permission to insert breakpoints in the target."), _("\ | |
5056 | When this permission is on, GDB may insert breakpoints in the program.\n\ | |
5057 | Otherwise, any sort of insertion attempt will result in an error."), | |
5058 | set_target_permissions, NULL, | |
5059 | &setlist, &showlist); | |
5060 | ||
5061 | add_setshow_boolean_cmd ("may-insert-tracepoints", class_support, | |
5062 | &may_insert_tracepoints_1, _("\ | |
5063 | Set permission to insert tracepoints in the target."), _("\ | |
5064 | Show permission to insert tracepoints in the target."), _("\ | |
5065 | When this permission is on, GDB may insert tracepoints in the program.\n\ | |
5066 | Otherwise, any sort of insertion attempt will result in an error."), | |
5067 | set_target_permissions, NULL, | |
5068 | &setlist, &showlist); | |
5069 | ||
5070 | add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support, | |
5071 | &may_insert_fast_tracepoints_1, _("\ | |
5072 | Set permission to insert fast tracepoints in the target."), _("\ | |
5073 | Show permission to insert fast tracepoints in the target."), _("\ | |
5074 | When this permission is on, GDB may insert fast tracepoints.\n\ | |
5075 | Otherwise, any sort of insertion attempt will result in an error."), | |
5076 | set_target_permissions, NULL, | |
5077 | &setlist, &showlist); | |
5078 | ||
5079 | add_setshow_boolean_cmd ("may-interrupt", class_support, | |
5080 | &may_stop_1, _("\ | |
5081 | Set permission to interrupt or signal the target."), _("\ | |
5082 | Show permission to interrupt or signal the target."), _("\ | |
5083 | When this permission is on, GDB may interrupt/stop the target's execution.\n\ | |
5084 | Otherwise, any attempt to interrupt or stop will be ignored."), | |
5085 | set_target_permissions, NULL, | |
5086 | &setlist, &showlist); | |
c906108c | 5087 | } |