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 | |
a14ed312 | 69 | void target_ignore (void); |
c906108c | 70 | |
a14ed312 | 71 | static void target_command (char *, int); |
c906108c | 72 | |
a14ed312 | 73 | static struct target_ops *find_default_run_target (char *); |
c906108c | 74 | |
4ac248ca YQ |
75 | static target_xfer_partial_ftype default_xfer_partial; |
76 | ||
c2250ad1 UW |
77 | static struct gdbarch *default_thread_architecture (struct target_ops *ops, |
78 | ptid_t ptid); | |
79 | ||
0b5a2719 TT |
80 | static int dummy_find_memory_regions (struct target_ops *self, |
81 | find_memory_region_ftype ignore1, | |
82 | void *ignore2); | |
83 | ||
16f796b1 TT |
84 | static char *dummy_make_corefile_notes (struct target_ops *self, |
85 | bfd *ignore1, int *ignore2); | |
86 | ||
6b84065d TT |
87 | static int find_default_can_async_p (struct target_ops *ignore); |
88 | ||
89 | static int find_default_is_async_p (struct target_ops *ignore); | |
90 | ||
fe31bf5b TT |
91 | static enum exec_direction_kind default_execution_direction |
92 | (struct target_ops *self); | |
93 | ||
1101cb7b TT |
94 | #include "target-delegates.c" |
95 | ||
a14ed312 | 96 | static void init_dummy_target (void); |
c906108c | 97 | |
aa869812 AC |
98 | static struct target_ops debug_target; |
99 | ||
a14ed312 | 100 | static void debug_to_open (char *, int); |
c906108c | 101 | |
f32dbf8c MM |
102 | static void debug_to_prepare_to_store (struct target_ops *self, |
103 | struct regcache *); | |
c906108c | 104 | |
a14ed312 | 105 | static void debug_to_files_info (struct target_ops *); |
c906108c | 106 | |
3db08215 | 107 | static int debug_to_insert_breakpoint (struct target_ops *, struct gdbarch *, |
a6d9a66e | 108 | struct bp_target_info *); |
c906108c | 109 | |
3db08215 | 110 | static int debug_to_remove_breakpoint (struct target_ops *, struct gdbarch *, |
a6d9a66e | 111 | struct bp_target_info *); |
c906108c | 112 | |
5461485a TT |
113 | static int debug_to_can_use_hw_breakpoint (struct target_ops *self, |
114 | int, int, int); | |
ccaa32c7 | 115 | |
23a26771 TT |
116 | static int debug_to_insert_hw_breakpoint (struct target_ops *self, |
117 | struct gdbarch *, | |
a6d9a66e | 118 | struct bp_target_info *); |
ccaa32c7 | 119 | |
a64dc96c TT |
120 | static int debug_to_remove_hw_breakpoint (struct target_ops *self, |
121 | struct gdbarch *, | |
a6d9a66e | 122 | struct bp_target_info *); |
ccaa32c7 | 123 | |
7bb99c53 TT |
124 | static int debug_to_insert_watchpoint (struct target_ops *self, |
125 | CORE_ADDR, int, int, | |
0cf6dd15 | 126 | struct expression *); |
ccaa32c7 | 127 | |
11b5219a TT |
128 | static int debug_to_remove_watchpoint (struct target_ops *self, |
129 | CORE_ADDR, int, int, | |
0cf6dd15 | 130 | struct expression *); |
ccaa32c7 | 131 | |
4aa7a7f5 | 132 | static int debug_to_stopped_data_address (struct target_ops *, CORE_ADDR *); |
ccaa32c7 | 133 | |
5009afc5 AS |
134 | static int debug_to_watchpoint_addr_within_range (struct target_ops *, |
135 | CORE_ADDR, CORE_ADDR, int); | |
136 | ||
31568a15 TT |
137 | static int debug_to_region_ok_for_hw_watchpoint (struct target_ops *self, |
138 | CORE_ADDR, int); | |
e0d24f8d | 139 | |
c3a5ff89 TT |
140 | static int debug_to_can_accel_watchpoint_condition (struct target_ops *self, |
141 | CORE_ADDR, int, int, | |
0cf6dd15 TJB |
142 | struct expression *); |
143 | ||
c42bf286 | 144 | static void debug_to_terminal_init (struct target_ops *self); |
c906108c | 145 | |
d2f640d4 | 146 | static void debug_to_terminal_inferior (struct target_ops *self); |
c906108c | 147 | |
2e1e1a19 | 148 | static void debug_to_terminal_ours_for_output (struct target_ops *self); |
c906108c | 149 | |
ae3bd431 | 150 | static void debug_to_terminal_save_ours (struct target_ops *self); |
a790ad35 | 151 | |
e3594fd1 | 152 | static void debug_to_terminal_ours (struct target_ops *self); |
c906108c | 153 | |
71a9f134 | 154 | static void debug_to_load (struct target_ops *self, char *, int); |
c906108c | 155 | |
da82bd6b | 156 | static int debug_to_can_run (struct target_ops *self); |
c906108c | 157 | |
1eab8a48 | 158 | static void debug_to_stop (struct target_ops *self, ptid_t); |
c906108c | 159 | |
c906108c | 160 | /* Pointer to array of target architecture structures; the size of the |
2bc416ba | 161 | array; the current index into the array; the allocated size of the |
c906108c SS |
162 | array. */ |
163 | struct target_ops **target_structs; | |
164 | unsigned target_struct_size; | |
c906108c SS |
165 | unsigned target_struct_allocsize; |
166 | #define DEFAULT_ALLOCSIZE 10 | |
167 | ||
168 | /* The initial current target, so that there is always a semi-valid | |
169 | current target. */ | |
170 | ||
171 | static struct target_ops dummy_target; | |
172 | ||
173 | /* Top of target stack. */ | |
174 | ||
258b763a | 175 | static struct target_ops *target_stack; |
c906108c SS |
176 | |
177 | /* The target structure we are currently using to talk to a process | |
178 | or file or whatever "inferior" we have. */ | |
179 | ||
180 | struct target_ops current_target; | |
181 | ||
182 | /* Command list for target. */ | |
183 | ||
184 | static struct cmd_list_element *targetlist = NULL; | |
185 | ||
cf7a04e8 DJ |
186 | /* Nonzero if we should trust readonly sections from the |
187 | executable when reading memory. */ | |
188 | ||
189 | static int trust_readonly = 0; | |
190 | ||
8defab1a DJ |
191 | /* Nonzero if we should show true memory content including |
192 | memory breakpoint inserted by gdb. */ | |
193 | ||
194 | static int show_memory_breakpoints = 0; | |
195 | ||
d914c394 SS |
196 | /* These globals control whether GDB attempts to perform these |
197 | operations; they are useful for targets that need to prevent | |
198 | inadvertant disruption, such as in non-stop mode. */ | |
199 | ||
200 | int may_write_registers = 1; | |
201 | ||
202 | int may_write_memory = 1; | |
203 | ||
204 | int may_insert_breakpoints = 1; | |
205 | ||
206 | int may_insert_tracepoints = 1; | |
207 | ||
208 | int may_insert_fast_tracepoints = 1; | |
209 | ||
210 | int may_stop = 1; | |
211 | ||
c906108c SS |
212 | /* Non-zero if we want to see trace of target level stuff. */ |
213 | ||
ccce17b0 | 214 | static unsigned int targetdebug = 0; |
920d2a44 AC |
215 | static void |
216 | show_targetdebug (struct ui_file *file, int from_tty, | |
217 | struct cmd_list_element *c, const char *value) | |
218 | { | |
219 | fprintf_filtered (file, _("Target debugging is %s.\n"), value); | |
220 | } | |
c906108c | 221 | |
a14ed312 | 222 | static void setup_target_debug (void); |
c906108c | 223 | |
c906108c SS |
224 | /* The user just typed 'target' without the name of a target. */ |
225 | ||
c906108c | 226 | static void |
fba45db2 | 227 | target_command (char *arg, int from_tty) |
c906108c SS |
228 | { |
229 | fputs_filtered ("Argument required (target name). Try `help target'\n", | |
230 | gdb_stdout); | |
231 | } | |
232 | ||
c35b1492 PA |
233 | /* Default target_has_* methods for process_stratum targets. */ |
234 | ||
235 | int | |
236 | default_child_has_all_memory (struct target_ops *ops) | |
237 | { | |
238 | /* If no inferior selected, then we can't read memory here. */ | |
239 | if (ptid_equal (inferior_ptid, null_ptid)) | |
240 | return 0; | |
241 | ||
242 | return 1; | |
243 | } | |
244 | ||
245 | int | |
246 | default_child_has_memory (struct target_ops *ops) | |
247 | { | |
248 | /* If no inferior selected, then we can't read memory here. */ | |
249 | if (ptid_equal (inferior_ptid, null_ptid)) | |
250 | return 0; | |
251 | ||
252 | return 1; | |
253 | } | |
254 | ||
255 | int | |
256 | default_child_has_stack (struct target_ops *ops) | |
257 | { | |
258 | /* If no inferior selected, there's no stack. */ | |
259 | if (ptid_equal (inferior_ptid, null_ptid)) | |
260 | return 0; | |
261 | ||
262 | return 1; | |
263 | } | |
264 | ||
265 | int | |
266 | default_child_has_registers (struct target_ops *ops) | |
267 | { | |
268 | /* Can't read registers from no inferior. */ | |
269 | if (ptid_equal (inferior_ptid, null_ptid)) | |
270 | return 0; | |
271 | ||
272 | return 1; | |
273 | } | |
274 | ||
275 | int | |
aeaec162 | 276 | default_child_has_execution (struct target_ops *ops, ptid_t the_ptid) |
c35b1492 PA |
277 | { |
278 | /* If there's no thread selected, then we can't make it run through | |
279 | hoops. */ | |
aeaec162 | 280 | if (ptid_equal (the_ptid, null_ptid)) |
c35b1492 PA |
281 | return 0; |
282 | ||
283 | return 1; | |
284 | } | |
285 | ||
286 | ||
287 | int | |
288 | target_has_all_memory_1 (void) | |
289 | { | |
290 | struct target_ops *t; | |
291 | ||
292 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
293 | if (t->to_has_all_memory (t)) | |
294 | return 1; | |
295 | ||
296 | return 0; | |
297 | } | |
298 | ||
299 | int | |
300 | target_has_memory_1 (void) | |
301 | { | |
302 | struct target_ops *t; | |
303 | ||
304 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
305 | if (t->to_has_memory (t)) | |
306 | return 1; | |
307 | ||
308 | return 0; | |
309 | } | |
310 | ||
311 | int | |
312 | target_has_stack_1 (void) | |
313 | { | |
314 | struct target_ops *t; | |
315 | ||
316 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
317 | if (t->to_has_stack (t)) | |
318 | return 1; | |
319 | ||
320 | return 0; | |
321 | } | |
322 | ||
323 | int | |
324 | target_has_registers_1 (void) | |
325 | { | |
326 | struct target_ops *t; | |
327 | ||
328 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
329 | if (t->to_has_registers (t)) | |
330 | return 1; | |
331 | ||
332 | return 0; | |
333 | } | |
334 | ||
335 | int | |
aeaec162 | 336 | target_has_execution_1 (ptid_t the_ptid) |
c35b1492 PA |
337 | { |
338 | struct target_ops *t; | |
339 | ||
340 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
aeaec162 | 341 | if (t->to_has_execution (t, the_ptid)) |
c35b1492 PA |
342 | return 1; |
343 | ||
344 | return 0; | |
345 | } | |
346 | ||
aeaec162 TT |
347 | int |
348 | target_has_execution_current (void) | |
349 | { | |
350 | return target_has_execution_1 (inferior_ptid); | |
351 | } | |
352 | ||
c22a2b88 TT |
353 | /* Complete initialization of T. This ensures that various fields in |
354 | T are set, if needed by the target implementation. */ | |
c906108c SS |
355 | |
356 | void | |
c22a2b88 | 357 | complete_target_initialization (struct target_ops *t) |
c906108c | 358 | { |
0088c768 | 359 | /* Provide default values for all "must have" methods. */ |
0b603eba AC |
360 | if (t->to_xfer_partial == NULL) |
361 | t->to_xfer_partial = default_xfer_partial; | |
0088c768 | 362 | |
c35b1492 PA |
363 | if (t->to_has_all_memory == NULL) |
364 | t->to_has_all_memory = (int (*) (struct target_ops *)) return_zero; | |
365 | ||
366 | if (t->to_has_memory == NULL) | |
367 | t->to_has_memory = (int (*) (struct target_ops *)) return_zero; | |
368 | ||
369 | if (t->to_has_stack == NULL) | |
370 | t->to_has_stack = (int (*) (struct target_ops *)) return_zero; | |
371 | ||
372 | if (t->to_has_registers == NULL) | |
373 | t->to_has_registers = (int (*) (struct target_ops *)) return_zero; | |
374 | ||
375 | if (t->to_has_execution == NULL) | |
aeaec162 | 376 | t->to_has_execution = (int (*) (struct target_ops *, ptid_t)) return_zero; |
1101cb7b TT |
377 | |
378 | install_delegators (t); | |
c22a2b88 TT |
379 | } |
380 | ||
381 | /* Add possible target architecture T to the list and add a new | |
382 | command 'target T->to_shortname'. Set COMPLETER as the command's | |
383 | completer if not NULL. */ | |
384 | ||
385 | void | |
386 | add_target_with_completer (struct target_ops *t, | |
387 | completer_ftype *completer) | |
388 | { | |
389 | struct cmd_list_element *c; | |
390 | ||
391 | complete_target_initialization (t); | |
c35b1492 | 392 | |
c906108c SS |
393 | if (!target_structs) |
394 | { | |
395 | target_struct_allocsize = DEFAULT_ALLOCSIZE; | |
396 | target_structs = (struct target_ops **) xmalloc | |
397 | (target_struct_allocsize * sizeof (*target_structs)); | |
398 | } | |
399 | if (target_struct_size >= target_struct_allocsize) | |
400 | { | |
401 | target_struct_allocsize *= 2; | |
402 | target_structs = (struct target_ops **) | |
c5aa993b JM |
403 | xrealloc ((char *) target_structs, |
404 | target_struct_allocsize * sizeof (*target_structs)); | |
c906108c SS |
405 | } |
406 | target_structs[target_struct_size++] = t; | |
c906108c SS |
407 | |
408 | if (targetlist == NULL) | |
1bedd215 AC |
409 | add_prefix_cmd ("target", class_run, target_command, _("\ |
410 | Connect to a target machine or process.\n\ | |
c906108c SS |
411 | The first argument is the type or protocol of the target machine.\n\ |
412 | Remaining arguments are interpreted by the target protocol. For more\n\ | |
413 | information on the arguments for a particular protocol, type\n\ | |
1bedd215 | 414 | `help target ' followed by the protocol name."), |
c906108c | 415 | &targetlist, "target ", 0, &cmdlist); |
9852c492 YQ |
416 | c = add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc, |
417 | &targetlist); | |
418 | if (completer != NULL) | |
419 | set_cmd_completer (c, completer); | |
420 | } | |
421 | ||
422 | /* Add a possible target architecture to the list. */ | |
423 | ||
424 | void | |
425 | add_target (struct target_ops *t) | |
426 | { | |
427 | add_target_with_completer (t, NULL); | |
c906108c SS |
428 | } |
429 | ||
b48d48eb MM |
430 | /* See target.h. */ |
431 | ||
432 | void | |
433 | add_deprecated_target_alias (struct target_ops *t, char *alias) | |
434 | { | |
435 | struct cmd_list_element *c; | |
436 | char *alt; | |
437 | ||
438 | /* If we use add_alias_cmd, here, we do not get the deprecated warning, | |
439 | see PR cli/15104. */ | |
440 | c = add_cmd (alias, no_class, t->to_open, t->to_doc, &targetlist); | |
441 | alt = xstrprintf ("target %s", t->to_shortname); | |
442 | deprecate_cmd (c, alt); | |
443 | } | |
444 | ||
c906108c SS |
445 | /* Stub functions */ |
446 | ||
447 | void | |
fba45db2 | 448 | target_ignore (void) |
c906108c SS |
449 | { |
450 | } | |
451 | ||
7d85a9c0 JB |
452 | void |
453 | target_kill (void) | |
454 | { | |
455 | struct target_ops *t; | |
456 | ||
457 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
458 | if (t->to_kill != NULL) | |
459 | { | |
460 | if (targetdebug) | |
461 | fprintf_unfiltered (gdb_stdlog, "target_kill ()\n"); | |
462 | ||
463 | t->to_kill (t); | |
464 | return; | |
465 | } | |
466 | ||
467 | noprocess (); | |
468 | } | |
469 | ||
11cf8741 JM |
470 | void |
471 | target_load (char *arg, int from_tty) | |
472 | { | |
4e5d721f | 473 | target_dcache_invalidate (); |
71a9f134 | 474 | (*current_target.to_load) (¤t_target, arg, from_tty); |
11cf8741 JM |
475 | } |
476 | ||
947b8855 PA |
477 | void |
478 | target_create_inferior (char *exec_file, char *args, | |
479 | char **env, int from_tty) | |
136d6dae VP |
480 | { |
481 | struct target_ops *t; | |
5d502164 | 482 | |
136d6dae VP |
483 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
484 | { | |
485 | if (t->to_create_inferior != NULL) | |
486 | { | |
487 | t->to_create_inferior (t, exec_file, args, env, from_tty); | |
947b8855 PA |
488 | if (targetdebug) |
489 | fprintf_unfiltered (gdb_stdlog, | |
490 | "target_create_inferior (%s, %s, xxx, %d)\n", | |
491 | exec_file, args, from_tty); | |
136d6dae VP |
492 | return; |
493 | } | |
494 | } | |
495 | ||
496 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 497 | _("could not find a target to create inferior")); |
136d6dae VP |
498 | } |
499 | ||
d9d2d8b6 PA |
500 | void |
501 | target_terminal_inferior (void) | |
502 | { | |
503 | /* A background resume (``run&'') should leave GDB in control of the | |
c378eb4e | 504 | terminal. Use target_can_async_p, not target_is_async_p, since at |
ba7f6c64 VP |
505 | this point the target is not async yet. However, if sync_execution |
506 | is not set, we know it will become async prior to resume. */ | |
507 | if (target_can_async_p () && !sync_execution) | |
d9d2d8b6 PA |
508 | return; |
509 | ||
510 | /* If GDB is resuming the inferior in the foreground, install | |
511 | inferior's terminal modes. */ | |
d2f640d4 | 512 | (*current_target.to_terminal_inferior) (¤t_target); |
d9d2d8b6 | 513 | } |
136d6dae | 514 | |
c906108c | 515 | static int |
fba45db2 KB |
516 | nomemory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
517 | struct target_ops *t) | |
c906108c | 518 | { |
c378eb4e MS |
519 | errno = EIO; /* Can't read/write this location. */ |
520 | return 0; /* No bytes handled. */ | |
c906108c SS |
521 | } |
522 | ||
523 | static void | |
fba45db2 | 524 | tcomplain (void) |
c906108c | 525 | { |
8a3fe4f8 | 526 | error (_("You can't do that when your target is `%s'"), |
c906108c SS |
527 | current_target.to_shortname); |
528 | } | |
529 | ||
530 | void | |
fba45db2 | 531 | noprocess (void) |
c906108c | 532 | { |
8a3fe4f8 | 533 | error (_("You can't do that without a process to debug.")); |
c906108c SS |
534 | } |
535 | ||
c906108c | 536 | static void |
0a4f40a2 | 537 | default_terminal_info (struct target_ops *self, const char *args, int from_tty) |
c906108c | 538 | { |
a3f17187 | 539 | printf_unfiltered (_("No saved terminal information.\n")); |
c906108c SS |
540 | } |
541 | ||
0ef643c8 JB |
542 | /* A default implementation for the to_get_ada_task_ptid target method. |
543 | ||
544 | This function builds the PTID by using both LWP and TID as part of | |
545 | the PTID lwp and tid elements. The pid used is the pid of the | |
546 | inferior_ptid. */ | |
547 | ||
2c0b251b | 548 | static ptid_t |
1e6b91a4 | 549 | default_get_ada_task_ptid (struct target_ops *self, long lwp, long tid) |
0ef643c8 JB |
550 | { |
551 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid); | |
552 | } | |
553 | ||
32231432 | 554 | static enum exec_direction_kind |
4c612759 | 555 | default_execution_direction (struct target_ops *self) |
32231432 PA |
556 | { |
557 | if (!target_can_execute_reverse) | |
558 | return EXEC_FORWARD; | |
559 | else if (!target_can_async_p ()) | |
560 | return EXEC_FORWARD; | |
561 | else | |
562 | gdb_assert_not_reached ("\ | |
563 | to_execution_direction must be implemented for reverse async"); | |
564 | } | |
565 | ||
7998dfc3 AC |
566 | /* Go through the target stack from top to bottom, copying over zero |
567 | entries in current_target, then filling in still empty entries. In | |
568 | effect, we are doing class inheritance through the pushed target | |
569 | vectors. | |
570 | ||
571 | NOTE: cagney/2003-10-17: The problem with this inheritance, as it | |
572 | is currently implemented, is that it discards any knowledge of | |
573 | which target an inherited method originally belonged to. | |
574 | Consequently, new new target methods should instead explicitly and | |
575 | locally search the target stack for the target that can handle the | |
576 | request. */ | |
c906108c SS |
577 | |
578 | static void | |
7998dfc3 | 579 | update_current_target (void) |
c906108c | 580 | { |
7998dfc3 AC |
581 | struct target_ops *t; |
582 | ||
08d8bcd7 | 583 | /* First, reset current's contents. */ |
7998dfc3 AC |
584 | memset (¤t_target, 0, sizeof (current_target)); |
585 | ||
1101cb7b TT |
586 | /* Install the delegators. */ |
587 | install_delegators (¤t_target); | |
588 | ||
7998dfc3 AC |
589 | #define INHERIT(FIELD, TARGET) \ |
590 | if (!current_target.FIELD) \ | |
591 | current_target.FIELD = (TARGET)->FIELD | |
592 | ||
593 | for (t = target_stack; t; t = t->beneath) | |
594 | { | |
595 | INHERIT (to_shortname, t); | |
596 | INHERIT (to_longname, t); | |
597 | INHERIT (to_doc, t); | |
b52323fa UW |
598 | /* Do not inherit to_open. */ |
599 | /* Do not inherit to_close. */ | |
136d6dae | 600 | /* Do not inherit to_attach. */ |
bebd3233 | 601 | /* Do not inherit to_post_attach. */ |
dc177b7a | 602 | INHERIT (to_attach_no_wait, t); |
136d6dae | 603 | /* Do not inherit to_detach. */ |
597320e7 | 604 | /* Do not inherit to_disconnect. */ |
28439f5e | 605 | /* Do not inherit to_resume. */ |
117de6a9 | 606 | /* Do not inherit to_wait. */ |
28439f5e PA |
607 | /* Do not inherit to_fetch_registers. */ |
608 | /* Do not inherit to_store_registers. */ | |
6c628163 | 609 | /* Do not inherit to_prepare_to_store. */ |
c8e73a31 | 610 | INHERIT (deprecated_xfer_memory, t); |
f86e59b2 | 611 | /* Do not inherit to_files_info. */ |
3db08215 MM |
612 | /* Do not inherit to_insert_breakpoint. */ |
613 | /* Do not inherit to_remove_breakpoint. */ | |
52b51d06 | 614 | /* Do not inherit to_can_use_hw_breakpoint. */ |
61b371f9 | 615 | /* Do not inherit to_insert_hw_breakpoint. */ |
418dabac | 616 | /* Do not inherit to_remove_hw_breakpoint. */ |
f1310107 | 617 | /* Do not inherit to_ranged_break_num_registers. */ |
016facd4 | 618 | /* Do not inherit to_insert_watchpoint. */ |
61dd109f | 619 | /* Do not inherit to_remove_watchpoint. */ |
9c06b0b4 TJB |
620 | /* Do not inherit to_insert_mask_watchpoint. */ |
621 | /* Do not inherit to_remove_mask_watchpoint. */ | |
6b84065d | 622 | /* Do not inherit to_stopped_data_address. */ |
74174d2e | 623 | INHERIT (to_have_steppable_watchpoint, t); |
7998dfc3 | 624 | INHERIT (to_have_continuable_watchpoint, t); |
6b84065d | 625 | /* Do not inherit to_stopped_by_watchpoint. */ |
65f160a9 | 626 | /* Do not inherit to_watchpoint_addr_within_range. */ |
d03655e4 | 627 | /* Do not inherit to_region_ok_for_hw_watchpoint. */ |
77cdffe9 | 628 | /* Do not inherit to_can_accel_watchpoint_condition. */ |
9c06b0b4 | 629 | /* Do not inherit to_masked_watch_num_registers. */ |
0343661d | 630 | /* Do not inherit to_terminal_init. */ |
ddeaacc9 | 631 | /* Do not inherit to_terminal_inferior. */ |
74fcbef9 | 632 | /* Do not inherit to_terminal_ours_for_output. */ |
e4a733f1 | 633 | /* Do not inherit to_terminal_ours. */ |
c6ea8f79 | 634 | /* Do not inherit to_terminal_save_ours. */ |
e19e919f | 635 | /* Do not inherit to_terminal_info. */ |
7d85a9c0 | 636 | /* Do not inherit to_kill. */ |
7634da87 | 637 | /* Do not inherit to_load. */ |
136d6dae | 638 | /* Do no inherit to_create_inferior. */ |
340ba4bf | 639 | /* Do not inherit to_post_startup_inferior. */ |
5958ebeb | 640 | /* Do not inherit to_insert_fork_catchpoint. */ |
e1a21fb7 | 641 | /* Do not inherit to_remove_fork_catchpoint. */ |
7e18a8dc | 642 | /* Do not inherit to_insert_vfork_catchpoint. */ |
95c3375e | 643 | /* Do not inherit to_remove_vfork_catchpoint. */ |
ee057212 | 644 | /* Do not inherit to_follow_fork. */ |
62f64d7a | 645 | /* Do not inherit to_insert_exec_catchpoint. */ |
cda0f38c | 646 | /* Do not inherit to_remove_exec_catchpoint. */ |
6a9fa051 | 647 | /* Do not inherit to_set_syscall_catchpoint. */ |
0db88c1d | 648 | /* Do not inherit to_has_exited. */ |
82892036 | 649 | /* Do not inherit to_mourn_inferior. */ |
7998dfc3 | 650 | INHERIT (to_can_run, t); |
2455069d | 651 | /* Do not inherit to_pass_signals. */ |
9b224c5e | 652 | /* Do not inherit to_program_signals. */ |
28439f5e PA |
653 | /* Do not inherit to_thread_alive. */ |
654 | /* Do not inherit to_find_new_threads. */ | |
117de6a9 | 655 | /* Do not inherit to_pid_to_str. */ |
4a7e6dda | 656 | /* Do not inherit to_extra_thread_info. */ |
825828fc | 657 | /* Do not inherit to_thread_name. */ |
7998dfc3 | 658 | INHERIT (to_stop, t); |
4b8a223f | 659 | /* Do not inherit to_xfer_partial. */ |
a53f3625 | 660 | /* Do not inherit to_rcmd. */ |
830ca330 | 661 | /* Do not inherit to_pid_to_exec_file. */ |
d9cb0195 | 662 | /* Do not inherit to_log_command. */ |
7998dfc3 | 663 | INHERIT (to_stratum, t); |
c378eb4e MS |
664 | /* Do not inherit to_has_all_memory. */ |
665 | /* Do not inherit to_has_memory. */ | |
666 | /* Do not inherit to_has_stack. */ | |
667 | /* Do not inherit to_has_registers. */ | |
668 | /* Do not inherit to_has_execution. */ | |
7998dfc3 | 669 | INHERIT (to_has_thread_control, t); |
6b84065d TT |
670 | /* Do not inherit to_can_async_p. */ |
671 | /* Do not inherit to_is_async_p. */ | |
672 | /* Do not inherit to_async. */ | |
0b5a2719 | 673 | /* Do not inherit to_find_memory_regions. */ |
16f796b1 | 674 | /* Do not inherit to_make_corefile_notes. */ |
3dbafbbb | 675 | /* Do not inherit to_get_bookmark. */ |
9bb9d61d | 676 | /* Do not inherit to_goto_bookmark. */ |
117de6a9 | 677 | /* Do not inherit to_get_thread_local_address. */ |
53e1cfc7 | 678 | /* Do not inherit to_can_execute_reverse. */ |
fe31bf5b | 679 | /* Do not inherit to_execution_direction. */ |
43eba180 | 680 | /* Do not inherit to_thread_architecture. */ |
424163ea | 681 | /* Do not inherit to_read_description. */ |
4229b31d | 682 | /* Do not inherit to_get_ada_task_ptid. */ |
08388c79 | 683 | /* Do not inherit to_search_memory. */ |
a7304748 | 684 | /* Do not inherit to_supports_multi_process. */ |
aab1b22d | 685 | /* Do not inherit to_supports_enable_disable_tracepoint. */ |
9409d39e | 686 | /* Do not inherit to_supports_string_tracing. */ |
5536135b | 687 | /* Do not inherit to_trace_init. */ |
9a980a22 | 688 | /* Do not inherit to_download_tracepoint. */ |
719acc4a | 689 | /* Do not inherit to_can_download_tracepoint. */ |
94eb98b9 | 690 | /* Do not inherit to_download_trace_state_variable. */ |
151f70f1 | 691 | /* Do not inherit to_enable_tracepoint. */ |
05c41993 | 692 | /* Do not inherit to_disable_tracepoint. */ |
86dd181d | 693 | /* Do not inherit to_trace_set_readonly_regions. */ |
25da2e80 | 694 | /* Do not inherit to_trace_start. */ |
4072d4ff | 695 | /* Do not inherit to_get_trace_status. */ |
6fea14cd | 696 | /* Do not inherit to_get_tracepoint_status. */ |
e51c07ea | 697 | /* Do not inherit to_trace_stop. */ |
afc94e66 | 698 | /* Do not inherit to_trace_find. */ |
959bcd0b | 699 | /* Do not inherit to_get_trace_state_variable_value. */ |
a2e6c147 | 700 | /* Do not inherit to_save_trace_data. */ |
1e949b00 | 701 | /* Do not inherit to_upload_tracepoints. */ |
08120467 | 702 | /* Do not inherit to_upload_trace_state_variables. */ |
ace92e7d | 703 | /* Do not inherit to_get_raw_trace_data. */ |
9249843f | 704 | /* Do not inherit to_get_min_fast_tracepoint_insn_len. */ |
0bcfeddf | 705 | /* Do not inherit to_set_disconnected_tracing. */ |
8d526939 | 706 | /* Do not inherit to_set_circular_trace_buffer. */ |
91df8d1d | 707 | /* Do not inherit to_set_trace_buffer_size. */ |
8586ccaa | 708 | /* Do not inherit to_set_trace_notes. */ |
22bcceee | 709 | /* Do not inherit to_get_tib_address. */ |
dcd6917f | 710 | /* Do not inherit to_set_permissions. */ |
4c3e4425 | 711 | /* Do not inherit to_static_tracepoint_marker_at. */ |
d6522a22 | 712 | /* Do not inherit to_static_tracepoint_markers_by_strid. */ |
92155eeb | 713 | /* Do not inherit to_traceframe_info. */ |
d9db5b21 | 714 | /* Do not inherit to_use_agent. */ |
9a7d8b48 | 715 | /* Do not inherit to_can_use_agent. */ |
0de91722 | 716 | /* Do not inherit to_augmented_libraries_svr4_read. */ |
7998dfc3 | 717 | INHERIT (to_magic, t); |
b775012e | 718 | INHERIT (to_supports_evaluation_of_breakpoint_conditions, t); |
d3ce09f5 | 719 | INHERIT (to_can_run_breakpoint_commands, t); |
fd79ecee | 720 | /* Do not inherit to_memory_map. */ |
a76d924d DJ |
721 | /* Do not inherit to_flash_erase. */ |
722 | /* Do not inherit to_flash_done. */ | |
7998dfc3 AC |
723 | } |
724 | #undef INHERIT | |
725 | ||
726 | /* Clean up a target struct so it no longer has any zero pointers in | |
0088c768 AC |
727 | it. Some entries are defaulted to a method that print an error, |
728 | others are hard-wired to a standard recursive default. */ | |
c906108c SS |
729 | |
730 | #define de_fault(field, value) \ | |
7998dfc3 AC |
731 | if (!current_target.field) \ |
732 | current_target.field = value | |
0d06e24b | 733 | |
2bc416ba DJ |
734 | de_fault (to_open, |
735 | (void (*) (char *, int)) | |
0d06e24b | 736 | tcomplain); |
2bc416ba | 737 | de_fault (to_close, |
de90e03d | 738 | (void (*) (struct target_ops *)) |
0d06e24b | 739 | target_ignore); |
2bc416ba | 740 | de_fault (deprecated_xfer_memory, |
3e43a32a MS |
741 | (int (*) (CORE_ADDR, gdb_byte *, int, int, |
742 | struct mem_attrib *, struct target_ops *)) | |
0d06e24b | 743 | nomemory); |
2bc416ba | 744 | de_fault (to_can_run, |
da82bd6b | 745 | (int (*) (struct target_ops *)) |
0d06e24b | 746 | return_zero); |
2bc416ba | 747 | de_fault (to_stop, |
1eab8a48 | 748 | (void (*) (struct target_ops *, ptid_t)) |
0d06e24b | 749 | target_ignore); |
424163ea | 750 | current_target.to_read_description = NULL; |
b775012e | 751 | de_fault (to_supports_evaluation_of_breakpoint_conditions, |
efcc2da7 | 752 | (int (*) (struct target_ops *)) |
b775012e | 753 | return_zero); |
d3ce09f5 | 754 | de_fault (to_can_run_breakpoint_commands, |
78eff0ec | 755 | (int (*) (struct target_ops *)) |
d3ce09f5 | 756 | return_zero); |
32231432 | 757 | |
c906108c | 758 | #undef de_fault |
c906108c | 759 | |
7998dfc3 AC |
760 | /* Finally, position the target-stack beneath the squashed |
761 | "current_target". That way code looking for a non-inherited | |
762 | target method can quickly and simply find it. */ | |
763 | current_target.beneath = target_stack; | |
b4b61fdb DJ |
764 | |
765 | if (targetdebug) | |
766 | setup_target_debug (); | |
c906108c SS |
767 | } |
768 | ||
769 | /* Push a new target type into the stack of the existing target accessors, | |
770 | possibly superseding some of the existing accessors. | |
771 | ||
c906108c SS |
772 | Rather than allow an empty stack, we always have the dummy target at |
773 | the bottom stratum, so we can call the function vectors without | |
774 | checking them. */ | |
775 | ||
b26a4dcb | 776 | void |
fba45db2 | 777 | push_target (struct target_ops *t) |
c906108c | 778 | { |
258b763a | 779 | struct target_ops **cur; |
c906108c SS |
780 | |
781 | /* Check magic number. If wrong, it probably means someone changed | |
782 | the struct definition, but not all the places that initialize one. */ | |
783 | if (t->to_magic != OPS_MAGIC) | |
784 | { | |
c5aa993b JM |
785 | fprintf_unfiltered (gdb_stderr, |
786 | "Magic number of %s target struct wrong\n", | |
787 | t->to_shortname); | |
3e43a32a MS |
788 | internal_error (__FILE__, __LINE__, |
789 | _("failed internal consistency check")); | |
c906108c SS |
790 | } |
791 | ||
258b763a AC |
792 | /* Find the proper stratum to install this target in. */ |
793 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
c906108c | 794 | { |
258b763a | 795 | if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum) |
c906108c SS |
796 | break; |
797 | } | |
798 | ||
258b763a | 799 | /* If there's already targets at this stratum, remove them. */ |
88c231eb | 800 | /* FIXME: cagney/2003-10-15: I think this should be popping all |
258b763a AC |
801 | targets to CUR, and not just those at this stratum level. */ |
802 | while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum) | |
803 | { | |
804 | /* There's already something at this stratum level. Close it, | |
805 | and un-hook it from the stack. */ | |
806 | struct target_ops *tmp = (*cur); | |
5d502164 | 807 | |
258b763a AC |
808 | (*cur) = (*cur)->beneath; |
809 | tmp->beneath = NULL; | |
460014f5 | 810 | target_close (tmp); |
258b763a | 811 | } |
c906108c SS |
812 | |
813 | /* We have removed all targets in our stratum, now add the new one. */ | |
258b763a AC |
814 | t->beneath = (*cur); |
815 | (*cur) = t; | |
c906108c SS |
816 | |
817 | update_current_target (); | |
c906108c SS |
818 | } |
819 | ||
2bc416ba | 820 | /* Remove a target_ops vector from the stack, wherever it may be. |
c906108c SS |
821 | Return how many times it was removed (0 or 1). */ |
822 | ||
823 | int | |
fba45db2 | 824 | unpush_target (struct target_ops *t) |
c906108c | 825 | { |
258b763a AC |
826 | struct target_ops **cur; |
827 | struct target_ops *tmp; | |
c906108c | 828 | |
c8d104ad PA |
829 | if (t->to_stratum == dummy_stratum) |
830 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 831 | _("Attempt to unpush the dummy target")); |
c8d104ad | 832 | |
c906108c | 833 | /* Look for the specified target. Note that we assume that a target |
c378eb4e | 834 | can only occur once in the target stack. */ |
c906108c | 835 | |
258b763a AC |
836 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) |
837 | { | |
838 | if ((*cur) == t) | |
839 | break; | |
840 | } | |
c906108c | 841 | |
305436e0 PA |
842 | /* If we don't find target_ops, quit. Only open targets should be |
843 | closed. */ | |
258b763a | 844 | if ((*cur) == NULL) |
305436e0 | 845 | return 0; |
5269965e | 846 | |
c378eb4e | 847 | /* Unchain the target. */ |
258b763a AC |
848 | tmp = (*cur); |
849 | (*cur) = (*cur)->beneath; | |
850 | tmp->beneath = NULL; | |
c906108c SS |
851 | |
852 | update_current_target (); | |
c906108c | 853 | |
305436e0 PA |
854 | /* Finally close the target. Note we do this after unchaining, so |
855 | any target method calls from within the target_close | |
856 | implementation don't end up in T anymore. */ | |
460014f5 | 857 | target_close (t); |
305436e0 | 858 | |
c906108c SS |
859 | return 1; |
860 | } | |
861 | ||
aa76d38d | 862 | void |
460014f5 | 863 | pop_all_targets_above (enum strata above_stratum) |
aa76d38d | 864 | { |
87ab71f0 | 865 | while ((int) (current_target.to_stratum) > (int) above_stratum) |
aa76d38d | 866 | { |
aa76d38d PA |
867 | if (!unpush_target (target_stack)) |
868 | { | |
869 | fprintf_unfiltered (gdb_stderr, | |
870 | "pop_all_targets couldn't find target %s\n", | |
b52323fa | 871 | target_stack->to_shortname); |
aa76d38d PA |
872 | internal_error (__FILE__, __LINE__, |
873 | _("failed internal consistency check")); | |
874 | break; | |
875 | } | |
876 | } | |
877 | } | |
878 | ||
87ab71f0 | 879 | void |
460014f5 | 880 | pop_all_targets (void) |
87ab71f0 | 881 | { |
460014f5 | 882 | pop_all_targets_above (dummy_stratum); |
87ab71f0 PA |
883 | } |
884 | ||
c0edd9ed JK |
885 | /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */ |
886 | ||
887 | int | |
888 | target_is_pushed (struct target_ops *t) | |
889 | { | |
890 | struct target_ops **cur; | |
891 | ||
892 | /* Check magic number. If wrong, it probably means someone changed | |
893 | the struct definition, but not all the places that initialize one. */ | |
894 | if (t->to_magic != OPS_MAGIC) | |
895 | { | |
896 | fprintf_unfiltered (gdb_stderr, | |
897 | "Magic number of %s target struct wrong\n", | |
898 | t->to_shortname); | |
3e43a32a MS |
899 | internal_error (__FILE__, __LINE__, |
900 | _("failed internal consistency check")); | |
c0edd9ed JK |
901 | } |
902 | ||
903 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
904 | if (*cur == t) | |
905 | return 1; | |
906 | ||
907 | return 0; | |
908 | } | |
909 | ||
72f5cf0e | 910 | /* Using the objfile specified in OBJFILE, find the address for the |
9e35dae4 DJ |
911 | current thread's thread-local storage with offset OFFSET. */ |
912 | CORE_ADDR | |
913 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) | |
914 | { | |
915 | volatile CORE_ADDR addr = 0; | |
117de6a9 PA |
916 | struct target_ops *target; |
917 | ||
918 | for (target = current_target.beneath; | |
919 | target != NULL; | |
920 | target = target->beneath) | |
921 | { | |
922 | if (target->to_get_thread_local_address != NULL) | |
923 | break; | |
924 | } | |
9e35dae4 | 925 | |
117de6a9 | 926 | if (target != NULL |
f5656ead | 927 | && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ())) |
9e35dae4 DJ |
928 | { |
929 | ptid_t ptid = inferior_ptid; | |
930 | volatile struct gdb_exception ex; | |
931 | ||
932 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
933 | { | |
934 | CORE_ADDR lm_addr; | |
935 | ||
936 | /* Fetch the load module address for this objfile. */ | |
f5656ead | 937 | lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch (), |
9e35dae4 DJ |
938 | objfile); |
939 | /* If it's 0, throw the appropriate exception. */ | |
940 | if (lm_addr == 0) | |
941 | throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR, | |
942 | _("TLS load module not found")); | |
943 | ||
3e43a32a MS |
944 | addr = target->to_get_thread_local_address (target, ptid, |
945 | lm_addr, offset); | |
9e35dae4 DJ |
946 | } |
947 | /* If an error occurred, print TLS related messages here. Otherwise, | |
948 | throw the error to some higher catcher. */ | |
949 | if (ex.reason < 0) | |
950 | { | |
951 | int objfile_is_library = (objfile->flags & OBJF_SHARED); | |
952 | ||
953 | switch (ex.error) | |
954 | { | |
955 | case TLS_NO_LIBRARY_SUPPORT_ERROR: | |
3e43a32a MS |
956 | error (_("Cannot find thread-local variables " |
957 | "in this thread library.")); | |
9e35dae4 DJ |
958 | break; |
959 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: | |
960 | if (objfile_is_library) | |
961 | error (_("Cannot find shared library `%s' in dynamic" | |
4262abfb | 962 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
963 | else |
964 | error (_("Cannot find executable file `%s' in dynamic" | |
4262abfb | 965 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
966 | break; |
967 | case TLS_NOT_ALLOCATED_YET_ERROR: | |
968 | if (objfile_is_library) | |
969 | error (_("The inferior has not yet allocated storage for" | |
970 | " thread-local variables in\n" | |
971 | "the shared library `%s'\n" | |
972 | "for %s"), | |
4262abfb | 973 | objfile_name (objfile), target_pid_to_str (ptid)); |
9e35dae4 DJ |
974 | else |
975 | error (_("The inferior has not yet allocated storage for" | |
976 | " thread-local variables in\n" | |
977 | "the executable `%s'\n" | |
978 | "for %s"), | |
4262abfb | 979 | objfile_name (objfile), target_pid_to_str (ptid)); |
9e35dae4 DJ |
980 | break; |
981 | case TLS_GENERIC_ERROR: | |
982 | if (objfile_is_library) | |
983 | error (_("Cannot find thread-local storage for %s, " | |
984 | "shared library %s:\n%s"), | |
985 | target_pid_to_str (ptid), | |
4262abfb | 986 | objfile_name (objfile), ex.message); |
9e35dae4 DJ |
987 | else |
988 | error (_("Cannot find thread-local storage for %s, " | |
989 | "executable file %s:\n%s"), | |
990 | target_pid_to_str (ptid), | |
4262abfb | 991 | objfile_name (objfile), ex.message); |
9e35dae4 DJ |
992 | break; |
993 | default: | |
994 | throw_exception (ex); | |
995 | break; | |
996 | } | |
997 | } | |
998 | } | |
999 | /* It wouldn't be wrong here to try a gdbarch method, too; finding | |
1000 | TLS is an ABI-specific thing. But we don't do that yet. */ | |
1001 | else | |
1002 | error (_("Cannot find thread-local variables on this target")); | |
1003 | ||
1004 | return addr; | |
1005 | } | |
1006 | ||
6be7b56e | 1007 | const char * |
9b409511 | 1008 | target_xfer_status_to_string (enum target_xfer_status err) |
6be7b56e PA |
1009 | { |
1010 | #define CASE(X) case X: return #X | |
1011 | switch (err) | |
1012 | { | |
1013 | CASE(TARGET_XFER_E_IO); | |
1014 | CASE(TARGET_XFER_E_UNAVAILABLE); | |
1015 | default: | |
1016 | return "<unknown>"; | |
1017 | } | |
1018 | #undef CASE | |
1019 | }; | |
1020 | ||
1021 | ||
c906108c SS |
1022 | #undef MIN |
1023 | #define MIN(A, B) (((A) <= (B)) ? (A) : (B)) | |
1024 | ||
1025 | /* target_read_string -- read a null terminated string, up to LEN bytes, | |
1026 | from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful. | |
1027 | Set *STRING to a pointer to malloc'd memory containing the data; the caller | |
1028 | is responsible for freeing it. Return the number of bytes successfully | |
1029 | read. */ | |
1030 | ||
1031 | int | |
fba45db2 | 1032 | target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop) |
c906108c | 1033 | { |
c2e8b827 | 1034 | int tlen, offset, i; |
1b0ba102 | 1035 | gdb_byte buf[4]; |
c906108c SS |
1036 | int errcode = 0; |
1037 | char *buffer; | |
1038 | int buffer_allocated; | |
1039 | char *bufptr; | |
1040 | unsigned int nbytes_read = 0; | |
1041 | ||
6217bf3e MS |
1042 | gdb_assert (string); |
1043 | ||
c906108c SS |
1044 | /* Small for testing. */ |
1045 | buffer_allocated = 4; | |
1046 | buffer = xmalloc (buffer_allocated); | |
1047 | bufptr = buffer; | |
1048 | ||
c906108c SS |
1049 | while (len > 0) |
1050 | { | |
1051 | tlen = MIN (len, 4 - (memaddr & 3)); | |
1052 | offset = memaddr & 3; | |
1053 | ||
1b0ba102 | 1054 | errcode = target_read_memory (memaddr & ~3, buf, sizeof buf); |
c906108c SS |
1055 | if (errcode != 0) |
1056 | { | |
1057 | /* The transfer request might have crossed the boundary to an | |
c378eb4e | 1058 | unallocated region of memory. Retry the transfer, requesting |
c906108c SS |
1059 | a single byte. */ |
1060 | tlen = 1; | |
1061 | offset = 0; | |
b8eb5af0 | 1062 | errcode = target_read_memory (memaddr, buf, 1); |
c906108c SS |
1063 | if (errcode != 0) |
1064 | goto done; | |
1065 | } | |
1066 | ||
1067 | if (bufptr - buffer + tlen > buffer_allocated) | |
1068 | { | |
1069 | unsigned int bytes; | |
5d502164 | 1070 | |
c906108c SS |
1071 | bytes = bufptr - buffer; |
1072 | buffer_allocated *= 2; | |
1073 | buffer = xrealloc (buffer, buffer_allocated); | |
1074 | bufptr = buffer + bytes; | |
1075 | } | |
1076 | ||
1077 | for (i = 0; i < tlen; i++) | |
1078 | { | |
1079 | *bufptr++ = buf[i + offset]; | |
1080 | if (buf[i + offset] == '\000') | |
1081 | { | |
1082 | nbytes_read += i + 1; | |
1083 | goto done; | |
1084 | } | |
1085 | } | |
1086 | ||
1087 | memaddr += tlen; | |
1088 | len -= tlen; | |
1089 | nbytes_read += tlen; | |
1090 | } | |
c5aa993b | 1091 | done: |
6217bf3e | 1092 | *string = buffer; |
c906108c SS |
1093 | if (errnop != NULL) |
1094 | *errnop = errcode; | |
c906108c SS |
1095 | return nbytes_read; |
1096 | } | |
1097 | ||
07b82ea5 PA |
1098 | struct target_section_table * |
1099 | target_get_section_table (struct target_ops *target) | |
1100 | { | |
1101 | struct target_ops *t; | |
1102 | ||
1103 | if (targetdebug) | |
1104 | fprintf_unfiltered (gdb_stdlog, "target_get_section_table ()\n"); | |
1105 | ||
1106 | for (t = target; t != NULL; t = t->beneath) | |
1107 | if (t->to_get_section_table != NULL) | |
1108 | return (*t->to_get_section_table) (t); | |
1109 | ||
1110 | return NULL; | |
1111 | } | |
1112 | ||
8db32d44 | 1113 | /* Find a section containing ADDR. */ |
07b82ea5 | 1114 | |
0542c86d | 1115 | struct target_section * |
8db32d44 AC |
1116 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
1117 | { | |
07b82ea5 | 1118 | struct target_section_table *table = target_get_section_table (target); |
0542c86d | 1119 | struct target_section *secp; |
07b82ea5 PA |
1120 | |
1121 | if (table == NULL) | |
1122 | return NULL; | |
1123 | ||
1124 | for (secp = table->sections; secp < table->sections_end; secp++) | |
8db32d44 AC |
1125 | { |
1126 | if (addr >= secp->addr && addr < secp->endaddr) | |
1127 | return secp; | |
1128 | } | |
1129 | return NULL; | |
1130 | } | |
1131 | ||
e6e4e701 PA |
1132 | /* Read memory from the live target, even if currently inspecting a |
1133 | traceframe. The return is the same as that of target_read. */ | |
1134 | ||
9b409511 | 1135 | static enum target_xfer_status |
e6e4e701 | 1136 | target_read_live_memory (enum target_object object, |
9b409511 YQ |
1137 | ULONGEST memaddr, gdb_byte *myaddr, ULONGEST len, |
1138 | ULONGEST *xfered_len) | |
e6e4e701 | 1139 | { |
9b409511 | 1140 | enum target_xfer_status ret; |
e6e4e701 PA |
1141 | struct cleanup *cleanup; |
1142 | ||
1143 | /* Switch momentarily out of tfind mode so to access live memory. | |
1144 | Note that this must not clear global state, such as the frame | |
1145 | cache, which must still remain valid for the previous traceframe. | |
1146 | We may be _building_ the frame cache at this point. */ | |
1147 | cleanup = make_cleanup_restore_traceframe_number (); | |
1148 | set_traceframe_number (-1); | |
1149 | ||
9b409511 YQ |
1150 | ret = target_xfer_partial (current_target.beneath, object, NULL, |
1151 | myaddr, NULL, memaddr, len, xfered_len); | |
e6e4e701 PA |
1152 | |
1153 | do_cleanups (cleanup); | |
1154 | return ret; | |
1155 | } | |
1156 | ||
1157 | /* Using the set of read-only target sections of OPS, read live | |
1158 | read-only memory. Note that the actual reads start from the | |
5657161f PA |
1159 | top-most target again. |
1160 | ||
1161 | For interface/parameters/return description see target.h, | |
1162 | to_xfer_partial. */ | |
e6e4e701 | 1163 | |
9b409511 | 1164 | static enum target_xfer_status |
e6e4e701 PA |
1165 | memory_xfer_live_readonly_partial (struct target_ops *ops, |
1166 | enum target_object object, | |
1167 | gdb_byte *readbuf, ULONGEST memaddr, | |
9b409511 | 1168 | ULONGEST len, ULONGEST *xfered_len) |
e6e4e701 PA |
1169 | { |
1170 | struct target_section *secp; | |
1171 | struct target_section_table *table; | |
1172 | ||
1173 | secp = target_section_by_addr (ops, memaddr); | |
1174 | if (secp != NULL | |
2b2848e2 DE |
1175 | && (bfd_get_section_flags (secp->the_bfd_section->owner, |
1176 | secp->the_bfd_section) | |
e6e4e701 PA |
1177 | & SEC_READONLY)) |
1178 | { | |
1179 | struct target_section *p; | |
1180 | ULONGEST memend = memaddr + len; | |
1181 | ||
1182 | table = target_get_section_table (ops); | |
1183 | ||
1184 | for (p = table->sections; p < table->sections_end; p++) | |
1185 | { | |
1186 | if (memaddr >= p->addr) | |
1187 | { | |
1188 | if (memend <= p->endaddr) | |
1189 | { | |
1190 | /* Entire transfer is within this section. */ | |
1191 | return target_read_live_memory (object, memaddr, | |
9b409511 | 1192 | readbuf, len, xfered_len); |
e6e4e701 PA |
1193 | } |
1194 | else if (memaddr >= p->endaddr) | |
1195 | { | |
1196 | /* This section ends before the transfer starts. */ | |
1197 | continue; | |
1198 | } | |
1199 | else | |
1200 | { | |
1201 | /* This section overlaps the transfer. Just do half. */ | |
1202 | len = p->endaddr - memaddr; | |
1203 | return target_read_live_memory (object, memaddr, | |
9b409511 | 1204 | readbuf, len, xfered_len); |
e6e4e701 PA |
1205 | } |
1206 | } | |
1207 | } | |
1208 | } | |
1209 | ||
9b409511 | 1210 | return TARGET_XFER_EOF; |
e6e4e701 PA |
1211 | } |
1212 | ||
9f713294 YQ |
1213 | /* Read memory from more than one valid target. A core file, for |
1214 | instance, could have some of memory but delegate other bits to | |
1215 | the target below it. So, we must manually try all targets. */ | |
1216 | ||
9b409511 | 1217 | static enum target_xfer_status |
17fde6d0 | 1218 | raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf, |
9b409511 YQ |
1219 | const gdb_byte *writebuf, ULONGEST memaddr, LONGEST len, |
1220 | ULONGEST *xfered_len) | |
9f713294 | 1221 | { |
9b409511 | 1222 | enum target_xfer_status res; |
9f713294 YQ |
1223 | |
1224 | do | |
1225 | { | |
1226 | res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 YQ |
1227 | readbuf, writebuf, memaddr, len, |
1228 | xfered_len); | |
1229 | if (res == TARGET_XFER_OK) | |
9f713294 YQ |
1230 | break; |
1231 | ||
633785ff MM |
1232 | /* Stop if the target reports that the memory is not available. */ |
1233 | if (res == TARGET_XFER_E_UNAVAILABLE) | |
1234 | break; | |
1235 | ||
9f713294 YQ |
1236 | /* We want to continue past core files to executables, but not |
1237 | past a running target's memory. */ | |
1238 | if (ops->to_has_all_memory (ops)) | |
1239 | break; | |
1240 | ||
1241 | ops = ops->beneath; | |
1242 | } | |
1243 | while (ops != NULL); | |
1244 | ||
1245 | return res; | |
1246 | } | |
1247 | ||
7f79c47e DE |
1248 | /* Perform a partial memory transfer. |
1249 | For docs see target.h, to_xfer_partial. */ | |
cf7a04e8 | 1250 | |
9b409511 | 1251 | static enum target_xfer_status |
f0ba3972 | 1252 | memory_xfer_partial_1 (struct target_ops *ops, enum target_object object, |
17fde6d0 | 1253 | gdb_byte *readbuf, const gdb_byte *writebuf, ULONGEST memaddr, |
9b409511 | 1254 | ULONGEST len, ULONGEST *xfered_len) |
0779438d | 1255 | { |
9b409511 | 1256 | enum target_xfer_status res; |
cf7a04e8 DJ |
1257 | int reg_len; |
1258 | struct mem_region *region; | |
4e5d721f | 1259 | struct inferior *inf; |
cf7a04e8 | 1260 | |
07b82ea5 PA |
1261 | /* For accesses to unmapped overlay sections, read directly from |
1262 | files. Must do this first, as MEMADDR may need adjustment. */ | |
1263 | if (readbuf != NULL && overlay_debugging) | |
1264 | { | |
1265 | struct obj_section *section = find_pc_overlay (memaddr); | |
5d502164 | 1266 | |
07b82ea5 PA |
1267 | if (pc_in_unmapped_range (memaddr, section)) |
1268 | { | |
1269 | struct target_section_table *table | |
1270 | = target_get_section_table (ops); | |
1271 | const char *section_name = section->the_bfd_section->name; | |
5d502164 | 1272 | |
07b82ea5 PA |
1273 | memaddr = overlay_mapped_address (memaddr, section); |
1274 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 1275 | memaddr, len, xfered_len, |
07b82ea5 PA |
1276 | table->sections, |
1277 | table->sections_end, | |
1278 | section_name); | |
1279 | } | |
1280 | } | |
1281 | ||
1282 | /* Try the executable files, if "trust-readonly-sections" is set. */ | |
cf7a04e8 DJ |
1283 | if (readbuf != NULL && trust_readonly) |
1284 | { | |
0542c86d | 1285 | struct target_section *secp; |
07b82ea5 | 1286 | struct target_section_table *table; |
cf7a04e8 DJ |
1287 | |
1288 | secp = target_section_by_addr (ops, memaddr); | |
1289 | if (secp != NULL | |
2b2848e2 DE |
1290 | && (bfd_get_section_flags (secp->the_bfd_section->owner, |
1291 | secp->the_bfd_section) | |
cf7a04e8 | 1292 | & SEC_READONLY)) |
07b82ea5 PA |
1293 | { |
1294 | table = target_get_section_table (ops); | |
1295 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 1296 | memaddr, len, xfered_len, |
07b82ea5 PA |
1297 | table->sections, |
1298 | table->sections_end, | |
1299 | NULL); | |
1300 | } | |
98646950 UW |
1301 | } |
1302 | ||
e6e4e701 PA |
1303 | /* If reading unavailable memory in the context of traceframes, and |
1304 | this address falls within a read-only section, fallback to | |
1305 | reading from live memory. */ | |
1306 | if (readbuf != NULL && get_traceframe_number () != -1) | |
1307 | { | |
1308 | VEC(mem_range_s) *available; | |
1309 | ||
1310 | /* If we fail to get the set of available memory, then the | |
1311 | target does not support querying traceframe info, and so we | |
1312 | attempt reading from the traceframe anyway (assuming the | |
1313 | target implements the old QTro packet then). */ | |
1314 | if (traceframe_available_memory (&available, memaddr, len)) | |
1315 | { | |
1316 | struct cleanup *old_chain; | |
1317 | ||
1318 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available); | |
1319 | ||
1320 | if (VEC_empty (mem_range_s, available) | |
1321 | || VEC_index (mem_range_s, available, 0)->start != memaddr) | |
1322 | { | |
1323 | /* Don't read into the traceframe's available | |
1324 | memory. */ | |
1325 | if (!VEC_empty (mem_range_s, available)) | |
1326 | { | |
1327 | LONGEST oldlen = len; | |
1328 | ||
1329 | len = VEC_index (mem_range_s, available, 0)->start - memaddr; | |
1330 | gdb_assert (len <= oldlen); | |
1331 | } | |
1332 | ||
1333 | do_cleanups (old_chain); | |
1334 | ||
1335 | /* This goes through the topmost target again. */ | |
1336 | res = memory_xfer_live_readonly_partial (ops, object, | |
9b409511 YQ |
1337 | readbuf, memaddr, |
1338 | len, xfered_len); | |
1339 | if (res == TARGET_XFER_OK) | |
1340 | return TARGET_XFER_OK; | |
1341 | else | |
1342 | { | |
1343 | /* No use trying further, we know some memory starting | |
1344 | at MEMADDR isn't available. */ | |
1345 | *xfered_len = len; | |
1346 | return TARGET_XFER_E_UNAVAILABLE; | |
1347 | } | |
e6e4e701 PA |
1348 | } |
1349 | ||
1350 | /* Don't try to read more than how much is available, in | |
1351 | case the target implements the deprecated QTro packet to | |
1352 | cater for older GDBs (the target's knowledge of read-only | |
1353 | sections may be outdated by now). */ | |
1354 | len = VEC_index (mem_range_s, available, 0)->length; | |
1355 | ||
1356 | do_cleanups (old_chain); | |
1357 | } | |
1358 | } | |
1359 | ||
cf7a04e8 DJ |
1360 | /* Try GDB's internal data cache. */ |
1361 | region = lookup_mem_region (memaddr); | |
4b5752d0 VP |
1362 | /* region->hi == 0 means there's no upper bound. */ |
1363 | if (memaddr + len < region->hi || region->hi == 0) | |
cf7a04e8 DJ |
1364 | reg_len = len; |
1365 | else | |
1366 | reg_len = region->hi - memaddr; | |
1367 | ||
1368 | switch (region->attrib.mode) | |
1369 | { | |
1370 | case MEM_RO: | |
1371 | if (writebuf != NULL) | |
2ed4b548 | 1372 | return TARGET_XFER_E_IO; |
cf7a04e8 DJ |
1373 | break; |
1374 | ||
1375 | case MEM_WO: | |
1376 | if (readbuf != NULL) | |
2ed4b548 | 1377 | return TARGET_XFER_E_IO; |
cf7a04e8 | 1378 | break; |
a76d924d DJ |
1379 | |
1380 | case MEM_FLASH: | |
1381 | /* We only support writing to flash during "load" for now. */ | |
1382 | if (writebuf != NULL) | |
1383 | error (_("Writing to flash memory forbidden in this context")); | |
1384 | break; | |
4b5752d0 VP |
1385 | |
1386 | case MEM_NONE: | |
2ed4b548 | 1387 | return TARGET_XFER_E_IO; |
cf7a04e8 DJ |
1388 | } |
1389 | ||
6c95b8df PA |
1390 | if (!ptid_equal (inferior_ptid, null_ptid)) |
1391 | inf = find_inferior_pid (ptid_get_pid (inferior_ptid)); | |
1392 | else | |
1393 | inf = NULL; | |
4e5d721f DE |
1394 | |
1395 | if (inf != NULL | |
2f4d8875 PA |
1396 | /* The dcache reads whole cache lines; that doesn't play well |
1397 | with reading from a trace buffer, because reading outside of | |
1398 | the collected memory range fails. */ | |
1399 | && get_traceframe_number () == -1 | |
4e5d721f | 1400 | && (region->attrib.cache |
29453a14 YQ |
1401 | || (stack_cache_enabled_p () && object == TARGET_OBJECT_STACK_MEMORY) |
1402 | || (code_cache_enabled_p () && object == TARGET_OBJECT_CODE_MEMORY))) | |
cf7a04e8 | 1403 | { |
2a2f9fe4 | 1404 | DCACHE *dcache = target_dcache_get_or_init (); |
9b409511 | 1405 | int l; |
2a2f9fe4 | 1406 | |
cf7a04e8 | 1407 | if (readbuf != NULL) |
9b409511 | 1408 | l = dcache_xfer_memory (ops, dcache, memaddr, readbuf, reg_len, 0); |
cf7a04e8 DJ |
1409 | else |
1410 | /* FIXME drow/2006-08-09: If we're going to preserve const | |
1411 | correctness dcache_xfer_memory should take readbuf and | |
1412 | writebuf. */ | |
9b409511 | 1413 | l = dcache_xfer_memory (ops, dcache, memaddr, (void *) writebuf, |
cf7a04e8 | 1414 | reg_len, 1); |
9b409511 YQ |
1415 | if (l <= 0) |
1416 | return TARGET_XFER_E_IO; | |
cf7a04e8 | 1417 | else |
9b409511 YQ |
1418 | { |
1419 | *xfered_len = (ULONGEST) l; | |
1420 | return TARGET_XFER_OK; | |
1421 | } | |
cf7a04e8 DJ |
1422 | } |
1423 | ||
1424 | /* If none of those methods found the memory we wanted, fall back | |
1425 | to a target partial transfer. Normally a single call to | |
1426 | to_xfer_partial is enough; if it doesn't recognize an object | |
1427 | it will call the to_xfer_partial of the next target down. | |
1428 | But for memory this won't do. Memory is the only target | |
9b409511 YQ |
1429 | object which can be read from more than one valid target. |
1430 | A core file, for instance, could have some of memory but | |
1431 | delegate other bits to the target below it. So, we must | |
1432 | manually try all targets. */ | |
1433 | ||
1434 | res = raw_memory_xfer_partial (ops, readbuf, writebuf, memaddr, reg_len, | |
1435 | xfered_len); | |
cf7a04e8 | 1436 | |
41dcd03f DE |
1437 | /* Make sure the cache gets updated no matter what - if we are writing |
1438 | to the stack. Even if this write is not tagged as such, we still need | |
1439 | to update the cache. */ | |
1440 | ||
9b409511 | 1441 | if (res == TARGET_XFER_OK |
41dcd03f DE |
1442 | && inf != NULL |
1443 | && writebuf != NULL | |
f2de9785 | 1444 | && target_dcache_init_p () |
41dcd03f | 1445 | && !region->attrib.cache |
29453a14 YQ |
1446 | && ((stack_cache_enabled_p () && object != TARGET_OBJECT_STACK_MEMORY) |
1447 | || (code_cache_enabled_p () && object != TARGET_OBJECT_CODE_MEMORY))) | |
41dcd03f | 1448 | { |
f2de9785 | 1449 | DCACHE *dcache = target_dcache_get (); |
2a2f9fe4 | 1450 | |
9b409511 | 1451 | dcache_update (dcache, memaddr, (void *) writebuf, reg_len); |
41dcd03f DE |
1452 | } |
1453 | ||
cf7a04e8 DJ |
1454 | /* If we still haven't got anything, return the last error. We |
1455 | give up. */ | |
1456 | return res; | |
0779438d AC |
1457 | } |
1458 | ||
f0ba3972 PA |
1459 | /* Perform a partial memory transfer. For docs see target.h, |
1460 | to_xfer_partial. */ | |
1461 | ||
9b409511 | 1462 | static enum target_xfer_status |
f0ba3972 | 1463 | memory_xfer_partial (struct target_ops *ops, enum target_object object, |
9b409511 YQ |
1464 | gdb_byte *readbuf, const gdb_byte *writebuf, |
1465 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) | |
f0ba3972 | 1466 | { |
9b409511 | 1467 | enum target_xfer_status res; |
f0ba3972 PA |
1468 | |
1469 | /* Zero length requests are ok and require no work. */ | |
1470 | if (len == 0) | |
9b409511 | 1471 | return TARGET_XFER_EOF; |
f0ba3972 PA |
1472 | |
1473 | /* Fill in READBUF with breakpoint shadows, or WRITEBUF with | |
1474 | breakpoint insns, thus hiding out from higher layers whether | |
1475 | there are software breakpoints inserted in the code stream. */ | |
1476 | if (readbuf != NULL) | |
1477 | { | |
9b409511 YQ |
1478 | res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len, |
1479 | xfered_len); | |
f0ba3972 | 1480 | |
9b409511 | 1481 | if (res == TARGET_XFER_OK && !show_memory_breakpoints) |
f0ba3972 PA |
1482 | breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, res); |
1483 | } | |
1484 | else | |
1485 | { | |
1486 | void *buf; | |
1487 | struct cleanup *old_chain; | |
1488 | ||
67c059c2 AB |
1489 | /* A large write request is likely to be partially satisfied |
1490 | by memory_xfer_partial_1. We will continually malloc | |
1491 | and free a copy of the entire write request for breakpoint | |
1492 | shadow handling even though we only end up writing a small | |
1493 | subset of it. Cap writes to 4KB to mitigate this. */ | |
1494 | len = min (4096, len); | |
1495 | ||
f0ba3972 PA |
1496 | buf = xmalloc (len); |
1497 | old_chain = make_cleanup (xfree, buf); | |
1498 | memcpy (buf, writebuf, len); | |
1499 | ||
1500 | breakpoint_xfer_memory (NULL, buf, writebuf, memaddr, len); | |
9b409511 YQ |
1501 | res = memory_xfer_partial_1 (ops, object, NULL, buf, memaddr, len, |
1502 | xfered_len); | |
f0ba3972 PA |
1503 | |
1504 | do_cleanups (old_chain); | |
1505 | } | |
1506 | ||
1507 | return res; | |
1508 | } | |
1509 | ||
8defab1a DJ |
1510 | static void |
1511 | restore_show_memory_breakpoints (void *arg) | |
1512 | { | |
1513 | show_memory_breakpoints = (uintptr_t) arg; | |
1514 | } | |
1515 | ||
1516 | struct cleanup * | |
1517 | make_show_memory_breakpoints_cleanup (int show) | |
1518 | { | |
1519 | int current = show_memory_breakpoints; | |
8defab1a | 1520 | |
5d502164 | 1521 | show_memory_breakpoints = show; |
8defab1a DJ |
1522 | return make_cleanup (restore_show_memory_breakpoints, |
1523 | (void *) (uintptr_t) current); | |
1524 | } | |
1525 | ||
7f79c47e DE |
1526 | /* For docs see target.h, to_xfer_partial. */ |
1527 | ||
9b409511 | 1528 | enum target_xfer_status |
27394598 AC |
1529 | target_xfer_partial (struct target_ops *ops, |
1530 | enum target_object object, const char *annex, | |
4ac248ca | 1531 | gdb_byte *readbuf, const gdb_byte *writebuf, |
9b409511 YQ |
1532 | ULONGEST offset, ULONGEST len, |
1533 | ULONGEST *xfered_len) | |
27394598 | 1534 | { |
9b409511 | 1535 | enum target_xfer_status retval; |
27394598 AC |
1536 | |
1537 | gdb_assert (ops->to_xfer_partial != NULL); | |
cf7a04e8 | 1538 | |
ce6d0892 YQ |
1539 | /* Transfer is done when LEN is zero. */ |
1540 | if (len == 0) | |
9b409511 | 1541 | return TARGET_XFER_EOF; |
ce6d0892 | 1542 | |
d914c394 SS |
1543 | if (writebuf && !may_write_memory) |
1544 | error (_("Writing to memory is not allowed (addr %s, len %s)"), | |
1545 | core_addr_to_string_nz (offset), plongest (len)); | |
1546 | ||
9b409511 YQ |
1547 | *xfered_len = 0; |
1548 | ||
cf7a04e8 DJ |
1549 | /* If this is a memory transfer, let the memory-specific code |
1550 | have a look at it instead. Memory transfers are more | |
1551 | complicated. */ | |
29453a14 YQ |
1552 | if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY |
1553 | || object == TARGET_OBJECT_CODE_MEMORY) | |
4e5d721f | 1554 | retval = memory_xfer_partial (ops, object, readbuf, |
9b409511 | 1555 | writebuf, offset, len, xfered_len); |
9f713294 | 1556 | else if (object == TARGET_OBJECT_RAW_MEMORY) |
cf7a04e8 | 1557 | { |
9f713294 | 1558 | /* Request the normal memory object from other layers. */ |
9b409511 YQ |
1559 | retval = raw_memory_xfer_partial (ops, readbuf, writebuf, offset, len, |
1560 | xfered_len); | |
cf7a04e8 | 1561 | } |
9f713294 YQ |
1562 | else |
1563 | retval = ops->to_xfer_partial (ops, object, annex, readbuf, | |
9b409511 | 1564 | writebuf, offset, len, xfered_len); |
cf7a04e8 | 1565 | |
27394598 AC |
1566 | if (targetdebug) |
1567 | { | |
1568 | const unsigned char *myaddr = NULL; | |
1569 | ||
1570 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a | 1571 | "%s:target_xfer_partial " |
9b409511 | 1572 | "(%d, %s, %s, %s, %s, %s) = %d, %s", |
27394598 AC |
1573 | ops->to_shortname, |
1574 | (int) object, | |
1575 | (annex ? annex : "(null)"), | |
53b71562 JB |
1576 | host_address_to_string (readbuf), |
1577 | host_address_to_string (writebuf), | |
0b1553bc | 1578 | core_addr_to_string_nz (offset), |
9b409511 YQ |
1579 | pulongest (len), retval, |
1580 | pulongest (*xfered_len)); | |
27394598 AC |
1581 | |
1582 | if (readbuf) | |
1583 | myaddr = readbuf; | |
1584 | if (writebuf) | |
1585 | myaddr = writebuf; | |
9b409511 | 1586 | if (retval == TARGET_XFER_OK && myaddr != NULL) |
27394598 AC |
1587 | { |
1588 | int i; | |
2bc416ba | 1589 | |
27394598 | 1590 | fputs_unfiltered (", bytes =", gdb_stdlog); |
9b409511 | 1591 | for (i = 0; i < *xfered_len; i++) |
27394598 | 1592 | { |
53b71562 | 1593 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1594 | { |
1595 | if (targetdebug < 2 && i > 0) | |
1596 | { | |
1597 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
1598 | break; | |
1599 | } | |
1600 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1601 | } | |
2bc416ba | 1602 | |
27394598 AC |
1603 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
1604 | } | |
1605 | } | |
2bc416ba | 1606 | |
27394598 AC |
1607 | fputc_unfiltered ('\n', gdb_stdlog); |
1608 | } | |
9b409511 YQ |
1609 | |
1610 | /* Check implementations of to_xfer_partial update *XFERED_LEN | |
1611 | properly. Do assertion after printing debug messages, so that we | |
1612 | can find more clues on assertion failure from debugging messages. */ | |
1613 | if (retval == TARGET_XFER_OK || retval == TARGET_XFER_E_UNAVAILABLE) | |
1614 | gdb_assert (*xfered_len > 0); | |
1615 | ||
27394598 AC |
1616 | return retval; |
1617 | } | |
1618 | ||
578d3588 PA |
1619 | /* Read LEN bytes of target memory at address MEMADDR, placing the |
1620 | results in GDB's memory at MYADDR. Returns either 0 for success or | |
9b409511 | 1621 | TARGET_XFER_E_IO if any error occurs. |
c906108c SS |
1622 | |
1623 | If an error occurs, no guarantee is made about the contents of the data at | |
1624 | MYADDR. In particular, the caller should not depend upon partial reads | |
1625 | filling the buffer with good data. There is no way for the caller to know | |
1626 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 | 1627 | deal with partial reads should call target_read (which will retry until |
c378eb4e | 1628 | it makes no progress, and then return how much was transferred). */ |
c906108c SS |
1629 | |
1630 | int | |
1b162304 | 1631 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
c906108c | 1632 | { |
c35b1492 PA |
1633 | /* Dispatch to the topmost target, not the flattened current_target. |
1634 | Memory accesses check target->to_has_(all_)memory, and the | |
1635 | flattened target doesn't inherit those. */ | |
1636 | if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1637 | myaddr, memaddr, len) == len) |
1638 | return 0; | |
0779438d | 1639 | else |
578d3588 | 1640 | return TARGET_XFER_E_IO; |
c906108c SS |
1641 | } |
1642 | ||
aee4bf85 PA |
1643 | /* Like target_read_memory, but specify explicitly that this is a read |
1644 | from the target's raw memory. That is, this read bypasses the | |
1645 | dcache, breakpoint shadowing, etc. */ | |
1646 | ||
1647 | int | |
1648 | target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1649 | { | |
1650 | /* See comment in target_read_memory about why the request starts at | |
1651 | current_target.beneath. */ | |
1652 | if (target_read (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, | |
1653 | myaddr, memaddr, len) == len) | |
1654 | return 0; | |
1655 | else | |
1656 | return TARGET_XFER_E_IO; | |
1657 | } | |
1658 | ||
4e5d721f DE |
1659 | /* Like target_read_memory, but specify explicitly that this is a read from |
1660 | the target's stack. This may trigger different cache behavior. */ | |
1661 | ||
1662 | int | |
45aa4659 | 1663 | target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
4e5d721f | 1664 | { |
aee4bf85 PA |
1665 | /* See comment in target_read_memory about why the request starts at |
1666 | current_target.beneath. */ | |
4e5d721f DE |
1667 | if (target_read (current_target.beneath, TARGET_OBJECT_STACK_MEMORY, NULL, |
1668 | myaddr, memaddr, len) == len) | |
1669 | return 0; | |
1670 | else | |
578d3588 | 1671 | return TARGET_XFER_E_IO; |
4e5d721f DE |
1672 | } |
1673 | ||
29453a14 YQ |
1674 | /* Like target_read_memory, but specify explicitly that this is a read from |
1675 | the target's code. This may trigger different cache behavior. */ | |
1676 | ||
1677 | int | |
1678 | target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1679 | { | |
aee4bf85 PA |
1680 | /* See comment in target_read_memory about why the request starts at |
1681 | current_target.beneath. */ | |
29453a14 YQ |
1682 | if (target_read (current_target.beneath, TARGET_OBJECT_CODE_MEMORY, NULL, |
1683 | myaddr, memaddr, len) == len) | |
1684 | return 0; | |
1685 | else | |
1686 | return TARGET_XFER_E_IO; | |
1687 | } | |
1688 | ||
7f79c47e | 1689 | /* Write LEN bytes from MYADDR to target memory at address MEMADDR. |
9b409511 | 1690 | Returns either 0 for success or TARGET_XFER_E_IO if any |
578d3588 PA |
1691 | error occurs. If an error occurs, no guarantee is made about how |
1692 | much data got written. Callers that can deal with partial writes | |
1693 | should call target_write. */ | |
7f79c47e | 1694 | |
c906108c | 1695 | int |
45aa4659 | 1696 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
c906108c | 1697 | { |
aee4bf85 PA |
1698 | /* See comment in target_read_memory about why the request starts at |
1699 | current_target.beneath. */ | |
c35b1492 | 1700 | if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, |
cf7a04e8 DJ |
1701 | myaddr, memaddr, len) == len) |
1702 | return 0; | |
0779438d | 1703 | else |
578d3588 | 1704 | return TARGET_XFER_E_IO; |
c906108c | 1705 | } |
c5aa993b | 1706 | |
f0ba3972 | 1707 | /* Write LEN bytes from MYADDR to target raw memory at address |
9b409511 | 1708 | MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO |
578d3588 PA |
1709 | if any error occurs. If an error occurs, no guarantee is made |
1710 | about how much data got written. Callers that can deal with | |
1711 | partial writes should call target_write. */ | |
f0ba3972 PA |
1712 | |
1713 | int | |
45aa4659 | 1714 | target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
f0ba3972 | 1715 | { |
aee4bf85 PA |
1716 | /* See comment in target_read_memory about why the request starts at |
1717 | current_target.beneath. */ | |
f0ba3972 PA |
1718 | if (target_write (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, |
1719 | myaddr, memaddr, len) == len) | |
1720 | return 0; | |
1721 | else | |
578d3588 | 1722 | return TARGET_XFER_E_IO; |
f0ba3972 PA |
1723 | } |
1724 | ||
fd79ecee DJ |
1725 | /* Fetch the target's memory map. */ |
1726 | ||
1727 | VEC(mem_region_s) * | |
1728 | target_memory_map (void) | |
1729 | { | |
1730 | VEC(mem_region_s) *result; | |
1731 | struct mem_region *last_one, *this_one; | |
1732 | int ix; | |
1733 | struct target_ops *t; | |
1734 | ||
1735 | if (targetdebug) | |
1736 | fprintf_unfiltered (gdb_stdlog, "target_memory_map ()\n"); | |
1737 | ||
1738 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1739 | if (t->to_memory_map != NULL) | |
1740 | break; | |
1741 | ||
1742 | if (t == NULL) | |
1743 | return NULL; | |
1744 | ||
1745 | result = t->to_memory_map (t); | |
1746 | if (result == NULL) | |
1747 | return NULL; | |
1748 | ||
1749 | qsort (VEC_address (mem_region_s, result), | |
1750 | VEC_length (mem_region_s, result), | |
1751 | sizeof (struct mem_region), mem_region_cmp); | |
1752 | ||
1753 | /* Check that regions do not overlap. Simultaneously assign | |
1754 | a numbering for the "mem" commands to use to refer to | |
1755 | each region. */ | |
1756 | last_one = NULL; | |
1757 | for (ix = 0; VEC_iterate (mem_region_s, result, ix, this_one); ix++) | |
1758 | { | |
1759 | this_one->number = ix; | |
1760 | ||
1761 | if (last_one && last_one->hi > this_one->lo) | |
1762 | { | |
1763 | warning (_("Overlapping regions in memory map: ignoring")); | |
1764 | VEC_free (mem_region_s, result); | |
1765 | return NULL; | |
1766 | } | |
1767 | last_one = this_one; | |
1768 | } | |
1769 | ||
1770 | return result; | |
1771 | } | |
1772 | ||
a76d924d DJ |
1773 | void |
1774 | target_flash_erase (ULONGEST address, LONGEST length) | |
1775 | { | |
1776 | struct target_ops *t; | |
1777 | ||
1778 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1779 | if (t->to_flash_erase != NULL) | |
5d502164 MS |
1780 | { |
1781 | if (targetdebug) | |
1782 | fprintf_unfiltered (gdb_stdlog, "target_flash_erase (%s, %s)\n", | |
1783 | hex_string (address), phex (length, 0)); | |
1784 | t->to_flash_erase (t, address, length); | |
1785 | return; | |
1786 | } | |
a76d924d DJ |
1787 | |
1788 | tcomplain (); | |
1789 | } | |
1790 | ||
1791 | void | |
1792 | target_flash_done (void) | |
1793 | { | |
1794 | struct target_ops *t; | |
1795 | ||
1796 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1797 | if (t->to_flash_done != NULL) | |
5d502164 MS |
1798 | { |
1799 | if (targetdebug) | |
1800 | fprintf_unfiltered (gdb_stdlog, "target_flash_done\n"); | |
1801 | t->to_flash_done (t); | |
1802 | return; | |
1803 | } | |
a76d924d DJ |
1804 | |
1805 | tcomplain (); | |
1806 | } | |
1807 | ||
920d2a44 AC |
1808 | static void |
1809 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1810 | struct cmd_list_element *c, const char *value) | |
1811 | { | |
3e43a32a MS |
1812 | fprintf_filtered (file, |
1813 | _("Mode for reading from readonly sections is %s.\n"), | |
920d2a44 AC |
1814 | value); |
1815 | } | |
3a11626d | 1816 | |
1e3ff5ad AC |
1817 | /* More generic transfers. */ |
1818 | ||
9b409511 | 1819 | static enum target_xfer_status |
8aa91c1e | 1820 | default_xfer_partial (struct target_ops *ops, enum target_object object, |
2bc416ba | 1821 | const char *annex, gdb_byte *readbuf, |
9b409511 YQ |
1822 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, |
1823 | ULONGEST *xfered_len) | |
0088c768 AC |
1824 | { |
1825 | if (object == TARGET_OBJECT_MEMORY | |
c8e73a31 AC |
1826 | && ops->deprecated_xfer_memory != NULL) |
1827 | /* If available, fall back to the target's | |
1828 | "deprecated_xfer_memory" method. */ | |
0088c768 | 1829 | { |
4b8a223f | 1830 | int xfered = -1; |
5d502164 | 1831 | |
0088c768 | 1832 | errno = 0; |
4b8a223f AC |
1833 | if (writebuf != NULL) |
1834 | { | |
1835 | void *buffer = xmalloc (len); | |
1836 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |
5d502164 | 1837 | |
4b8a223f | 1838 | memcpy (buffer, writebuf, len); |
c8e73a31 AC |
1839 | xfered = ops->deprecated_xfer_memory (offset, buffer, len, |
1840 | 1/*write*/, NULL, ops); | |
4b8a223f AC |
1841 | do_cleanups (cleanup); |
1842 | } | |
1843 | if (readbuf != NULL) | |
244e85c8 MS |
1844 | xfered = ops->deprecated_xfer_memory (offset, readbuf, len, |
1845 | 0/*read*/, NULL, ops); | |
0088c768 | 1846 | if (xfered > 0) |
9b409511 YQ |
1847 | { |
1848 | *xfered_len = (ULONGEST) xfered; | |
1849 | return TARGET_XFER_E_IO; | |
1850 | } | |
0088c768 | 1851 | else if (xfered == 0 && errno == 0) |
c8e73a31 AC |
1852 | /* "deprecated_xfer_memory" uses 0, cross checked against |
1853 | ERRNO as one indication of an error. */ | |
9b409511 | 1854 | return TARGET_XFER_EOF; |
0088c768 | 1855 | else |
9b409511 | 1856 | return TARGET_XFER_E_IO; |
0088c768 | 1857 | } |
0088c768 | 1858 | else |
6b84065d TT |
1859 | { |
1860 | gdb_assert (ops->beneath != NULL); | |
1861 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, | |
1862 | readbuf, writebuf, offset, len, | |
1863 | xfered_len); | |
1864 | } | |
0088c768 AC |
1865 | } |
1866 | ||
7f79c47e | 1867 | /* Target vector read/write partial wrapper functions. */ |
0088c768 | 1868 | |
9b409511 | 1869 | static enum target_xfer_status |
1e3ff5ad AC |
1870 | target_read_partial (struct target_ops *ops, |
1871 | enum target_object object, | |
1b0ba102 | 1872 | const char *annex, gdb_byte *buf, |
9b409511 YQ |
1873 | ULONGEST offset, ULONGEST len, |
1874 | ULONGEST *xfered_len) | |
1e3ff5ad | 1875 | { |
9b409511 YQ |
1876 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len, |
1877 | xfered_len); | |
1e3ff5ad AC |
1878 | } |
1879 | ||
8a55ffb0 | 1880 | static enum target_xfer_status |
1e3ff5ad AC |
1881 | target_write_partial (struct target_ops *ops, |
1882 | enum target_object object, | |
1b0ba102 | 1883 | const char *annex, const gdb_byte *buf, |
9b409511 | 1884 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len) |
1e3ff5ad | 1885 | { |
9b409511 YQ |
1886 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len, |
1887 | xfered_len); | |
1e3ff5ad AC |
1888 | } |
1889 | ||
1890 | /* Wrappers to perform the full transfer. */ | |
7f79c47e DE |
1891 | |
1892 | /* For docs on target_read see target.h. */ | |
1893 | ||
1e3ff5ad AC |
1894 | LONGEST |
1895 | target_read (struct target_ops *ops, | |
1896 | enum target_object object, | |
1b0ba102 | 1897 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1898 | ULONGEST offset, LONGEST len) |
1899 | { | |
1900 | LONGEST xfered = 0; | |
5d502164 | 1901 | |
1e3ff5ad AC |
1902 | while (xfered < len) |
1903 | { | |
9b409511 YQ |
1904 | ULONGEST xfered_len; |
1905 | enum target_xfer_status status; | |
1906 | ||
1907 | status = target_read_partial (ops, object, annex, | |
1908 | (gdb_byte *) buf + xfered, | |
1909 | offset + xfered, len - xfered, | |
1910 | &xfered_len); | |
5d502164 | 1911 | |
1e3ff5ad | 1912 | /* Call an observer, notifying them of the xfer progress? */ |
9b409511 | 1913 | if (status == TARGET_XFER_EOF) |
13547ab6 | 1914 | return xfered; |
9b409511 YQ |
1915 | else if (status == TARGET_XFER_OK) |
1916 | { | |
1917 | xfered += xfered_len; | |
1918 | QUIT; | |
1919 | } | |
1920 | else | |
0088c768 | 1921 | return -1; |
9b409511 | 1922 | |
1e3ff5ad AC |
1923 | } |
1924 | return len; | |
1925 | } | |
1926 | ||
f1a507a1 JB |
1927 | /* Assuming that the entire [begin, end) range of memory cannot be |
1928 | read, try to read whatever subrange is possible to read. | |
1929 | ||
1930 | The function returns, in RESULT, either zero or one memory block. | |
1931 | If there's a readable subrange at the beginning, it is completely | |
1932 | read and returned. Any further readable subrange will not be read. | |
1933 | Otherwise, if there's a readable subrange at the end, it will be | |
1934 | completely read and returned. Any readable subranges before it | |
1935 | (obviously, not starting at the beginning), will be ignored. In | |
1936 | other cases -- either no readable subrange, or readable subrange(s) | |
1937 | that is neither at the beginning, or end, nothing is returned. | |
1938 | ||
1939 | The purpose of this function is to handle a read across a boundary | |
1940 | of accessible memory in a case when memory map is not available. | |
1941 | The above restrictions are fine for this case, but will give | |
1942 | incorrect results if the memory is 'patchy'. However, supporting | |
1943 | 'patchy' memory would require trying to read every single byte, | |
1944 | and it seems unacceptable solution. Explicit memory map is | |
1945 | recommended for this case -- and target_read_memory_robust will | |
1946 | take care of reading multiple ranges then. */ | |
8dedea02 VP |
1947 | |
1948 | static void | |
3e43a32a MS |
1949 | read_whatever_is_readable (struct target_ops *ops, |
1950 | ULONGEST begin, ULONGEST end, | |
8dedea02 | 1951 | VEC(memory_read_result_s) **result) |
d5086790 | 1952 | { |
f1a507a1 | 1953 | gdb_byte *buf = xmalloc (end - begin); |
8dedea02 VP |
1954 | ULONGEST current_begin = begin; |
1955 | ULONGEST current_end = end; | |
1956 | int forward; | |
1957 | memory_read_result_s r; | |
9b409511 | 1958 | ULONGEST xfered_len; |
8dedea02 VP |
1959 | |
1960 | /* If we previously failed to read 1 byte, nothing can be done here. */ | |
1961 | if (end - begin <= 1) | |
13b3fd9b MS |
1962 | { |
1963 | xfree (buf); | |
1964 | return; | |
1965 | } | |
8dedea02 VP |
1966 | |
1967 | /* Check that either first or the last byte is readable, and give up | |
c378eb4e | 1968 | if not. This heuristic is meant to permit reading accessible memory |
8dedea02 VP |
1969 | at the boundary of accessible region. */ |
1970 | if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 | 1971 | buf, begin, 1, &xfered_len) == TARGET_XFER_OK) |
8dedea02 VP |
1972 | { |
1973 | forward = 1; | |
1974 | ++current_begin; | |
1975 | } | |
1976 | else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 YQ |
1977 | buf + (end-begin) - 1, end - 1, 1, |
1978 | &xfered_len) == TARGET_XFER_OK) | |
8dedea02 VP |
1979 | { |
1980 | forward = 0; | |
1981 | --current_end; | |
1982 | } | |
1983 | else | |
1984 | { | |
13b3fd9b | 1985 | xfree (buf); |
8dedea02 VP |
1986 | return; |
1987 | } | |
1988 | ||
1989 | /* Loop invariant is that the [current_begin, current_end) was previously | |
1990 | found to be not readable as a whole. | |
1991 | ||
1992 | Note loop condition -- if the range has 1 byte, we can't divide the range | |
1993 | so there's no point trying further. */ | |
1994 | while (current_end - current_begin > 1) | |
1995 | { | |
1996 | ULONGEST first_half_begin, first_half_end; | |
1997 | ULONGEST second_half_begin, second_half_end; | |
1998 | LONGEST xfer; | |
8dedea02 | 1999 | ULONGEST middle = current_begin + (current_end - current_begin)/2; |
f1a507a1 | 2000 | |
8dedea02 VP |
2001 | if (forward) |
2002 | { | |
2003 | first_half_begin = current_begin; | |
2004 | first_half_end = middle; | |
2005 | second_half_begin = middle; | |
2006 | second_half_end = current_end; | |
2007 | } | |
2008 | else | |
2009 | { | |
2010 | first_half_begin = middle; | |
2011 | first_half_end = current_end; | |
2012 | second_half_begin = current_begin; | |
2013 | second_half_end = middle; | |
2014 | } | |
2015 | ||
2016 | xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2017 | buf + (first_half_begin - begin), | |
2018 | first_half_begin, | |
2019 | first_half_end - first_half_begin); | |
2020 | ||
2021 | if (xfer == first_half_end - first_half_begin) | |
2022 | { | |
c378eb4e | 2023 | /* This half reads up fine. So, the error must be in the |
3e43a32a | 2024 | other half. */ |
8dedea02 VP |
2025 | current_begin = second_half_begin; |
2026 | current_end = second_half_end; | |
2027 | } | |
2028 | else | |
2029 | { | |
c378eb4e MS |
2030 | /* This half is not readable. Because we've tried one byte, we |
2031 | know some part of this half if actually redable. Go to the next | |
8dedea02 VP |
2032 | iteration to divide again and try to read. |
2033 | ||
2034 | We don't handle the other half, because this function only tries | |
2035 | to read a single readable subrange. */ | |
2036 | current_begin = first_half_begin; | |
2037 | current_end = first_half_end; | |
2038 | } | |
2039 | } | |
2040 | ||
2041 | if (forward) | |
2042 | { | |
2043 | /* The [begin, current_begin) range has been read. */ | |
2044 | r.begin = begin; | |
2045 | r.end = current_begin; | |
2046 | r.data = buf; | |
2047 | } | |
2048 | else | |
2049 | { | |
2050 | /* The [current_end, end) range has been read. */ | |
2051 | LONGEST rlen = end - current_end; | |
f1a507a1 | 2052 | |
8dedea02 VP |
2053 | r.data = xmalloc (rlen); |
2054 | memcpy (r.data, buf + current_end - begin, rlen); | |
2055 | r.begin = current_end; | |
2056 | r.end = end; | |
2057 | xfree (buf); | |
2058 | } | |
2059 | VEC_safe_push(memory_read_result_s, (*result), &r); | |
2060 | } | |
2061 | ||
2062 | void | |
2063 | free_memory_read_result_vector (void *x) | |
2064 | { | |
2065 | VEC(memory_read_result_s) *v = x; | |
2066 | memory_read_result_s *current; | |
2067 | int ix; | |
2068 | ||
2069 | for (ix = 0; VEC_iterate (memory_read_result_s, v, ix, current); ++ix) | |
2070 | { | |
2071 | xfree (current->data); | |
2072 | } | |
2073 | VEC_free (memory_read_result_s, v); | |
2074 | } | |
2075 | ||
2076 | VEC(memory_read_result_s) * | |
2077 | read_memory_robust (struct target_ops *ops, ULONGEST offset, LONGEST len) | |
2078 | { | |
2079 | VEC(memory_read_result_s) *result = 0; | |
2080 | ||
2081 | LONGEST xfered = 0; | |
d5086790 VP |
2082 | while (xfered < len) |
2083 | { | |
8dedea02 VP |
2084 | struct mem_region *region = lookup_mem_region (offset + xfered); |
2085 | LONGEST rlen; | |
5d502164 | 2086 | |
8dedea02 VP |
2087 | /* If there is no explicit region, a fake one should be created. */ |
2088 | gdb_assert (region); | |
2089 | ||
2090 | if (region->hi == 0) | |
2091 | rlen = len - xfered; | |
2092 | else | |
2093 | rlen = region->hi - offset; | |
2094 | ||
2095 | if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO) | |
d5086790 | 2096 | { |
c378eb4e | 2097 | /* Cannot read this region. Note that we can end up here only |
8dedea02 VP |
2098 | if the region is explicitly marked inaccessible, or |
2099 | 'inaccessible-by-default' is in effect. */ | |
2100 | xfered += rlen; | |
2101 | } | |
2102 | else | |
2103 | { | |
2104 | LONGEST to_read = min (len - xfered, rlen); | |
2105 | gdb_byte *buffer = (gdb_byte *)xmalloc (to_read); | |
2106 | ||
2107 | LONGEST xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2108 | (gdb_byte *) buffer, | |
2109 | offset + xfered, to_read); | |
2110 | /* Call an observer, notifying them of the xfer progress? */ | |
d5086790 | 2111 | if (xfer <= 0) |
d5086790 | 2112 | { |
c378eb4e | 2113 | /* Got an error reading full chunk. See if maybe we can read |
8dedea02 VP |
2114 | some subrange. */ |
2115 | xfree (buffer); | |
3e43a32a MS |
2116 | read_whatever_is_readable (ops, offset + xfered, |
2117 | offset + xfered + to_read, &result); | |
8dedea02 | 2118 | xfered += to_read; |
d5086790 | 2119 | } |
8dedea02 VP |
2120 | else |
2121 | { | |
2122 | struct memory_read_result r; | |
2123 | r.data = buffer; | |
2124 | r.begin = offset + xfered; | |
2125 | r.end = r.begin + xfer; | |
2126 | VEC_safe_push (memory_read_result_s, result, &r); | |
2127 | xfered += xfer; | |
2128 | } | |
2129 | QUIT; | |
d5086790 | 2130 | } |
d5086790 | 2131 | } |
8dedea02 | 2132 | return result; |
d5086790 VP |
2133 | } |
2134 | ||
8dedea02 | 2135 | |
cf7a04e8 DJ |
2136 | /* An alternative to target_write with progress callbacks. */ |
2137 | ||
1e3ff5ad | 2138 | LONGEST |
cf7a04e8 DJ |
2139 | target_write_with_progress (struct target_ops *ops, |
2140 | enum target_object object, | |
2141 | const char *annex, const gdb_byte *buf, | |
2142 | ULONGEST offset, LONGEST len, | |
2143 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad AC |
2144 | { |
2145 | LONGEST xfered = 0; | |
a76d924d DJ |
2146 | |
2147 | /* Give the progress callback a chance to set up. */ | |
2148 | if (progress) | |
2149 | (*progress) (0, baton); | |
2150 | ||
1e3ff5ad AC |
2151 | while (xfered < len) |
2152 | { | |
9b409511 YQ |
2153 | ULONGEST xfered_len; |
2154 | enum target_xfer_status status; | |
2155 | ||
2156 | status = target_write_partial (ops, object, annex, | |
2157 | (gdb_byte *) buf + xfered, | |
2158 | offset + xfered, len - xfered, | |
2159 | &xfered_len); | |
cf7a04e8 | 2160 | |
9b409511 | 2161 | if (status == TARGET_XFER_EOF) |
13547ab6 | 2162 | return xfered; |
9b409511 | 2163 | if (TARGET_XFER_STATUS_ERROR_P (status)) |
0088c768 | 2164 | return -1; |
cf7a04e8 | 2165 | |
9b409511 | 2166 | gdb_assert (status == TARGET_XFER_OK); |
cf7a04e8 | 2167 | if (progress) |
9b409511 | 2168 | (*progress) (xfered_len, baton); |
cf7a04e8 | 2169 | |
9b409511 | 2170 | xfered += xfered_len; |
1e3ff5ad AC |
2171 | QUIT; |
2172 | } | |
2173 | return len; | |
2174 | } | |
2175 | ||
7f79c47e DE |
2176 | /* For docs on target_write see target.h. */ |
2177 | ||
cf7a04e8 DJ |
2178 | LONGEST |
2179 | target_write (struct target_ops *ops, | |
2180 | enum target_object object, | |
2181 | const char *annex, const gdb_byte *buf, | |
2182 | ULONGEST offset, LONGEST len) | |
2183 | { | |
2184 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
2185 | NULL, NULL); | |
2186 | } | |
2187 | ||
159f81f3 DJ |
2188 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
2189 | the size of the transferred data. PADDING additional bytes are | |
2190 | available in *BUF_P. This is a helper function for | |
2191 | target_read_alloc; see the declaration of that function for more | |
2192 | information. */ | |
13547ab6 | 2193 | |
159f81f3 DJ |
2194 | static LONGEST |
2195 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, | |
2196 | const char *annex, gdb_byte **buf_p, int padding) | |
13547ab6 DJ |
2197 | { |
2198 | size_t buf_alloc, buf_pos; | |
2199 | gdb_byte *buf; | |
13547ab6 DJ |
2200 | |
2201 | /* This function does not have a length parameter; it reads the | |
2202 | entire OBJECT). Also, it doesn't support objects fetched partly | |
2203 | from one target and partly from another (in a different stratum, | |
2204 | e.g. a core file and an executable). Both reasons make it | |
2205 | unsuitable for reading memory. */ | |
2206 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
2207 | ||
2208 | /* Start by reading up to 4K at a time. The target will throttle | |
2209 | this number down if necessary. */ | |
2210 | buf_alloc = 4096; | |
2211 | buf = xmalloc (buf_alloc); | |
2212 | buf_pos = 0; | |
2213 | while (1) | |
2214 | { | |
9b409511 YQ |
2215 | ULONGEST xfered_len; |
2216 | enum target_xfer_status status; | |
2217 | ||
2218 | status = target_read_partial (ops, object, annex, &buf[buf_pos], | |
2219 | buf_pos, buf_alloc - buf_pos - padding, | |
2220 | &xfered_len); | |
2221 | ||
2222 | if (status == TARGET_XFER_EOF) | |
13547ab6 DJ |
2223 | { |
2224 | /* Read all there was. */ | |
2225 | if (buf_pos == 0) | |
2226 | xfree (buf); | |
2227 | else | |
2228 | *buf_p = buf; | |
2229 | return buf_pos; | |
2230 | } | |
9b409511 YQ |
2231 | else if (status != TARGET_XFER_OK) |
2232 | { | |
2233 | /* An error occurred. */ | |
2234 | xfree (buf); | |
2235 | return TARGET_XFER_E_IO; | |
2236 | } | |
13547ab6 | 2237 | |
9b409511 | 2238 | buf_pos += xfered_len; |
13547ab6 DJ |
2239 | |
2240 | /* If the buffer is filling up, expand it. */ | |
2241 | if (buf_alloc < buf_pos * 2) | |
2242 | { | |
2243 | buf_alloc *= 2; | |
2244 | buf = xrealloc (buf, buf_alloc); | |
2245 | } | |
2246 | ||
2247 | QUIT; | |
2248 | } | |
2249 | } | |
2250 | ||
159f81f3 DJ |
2251 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
2252 | the size of the transferred data. See the declaration in "target.h" | |
2253 | function for more information about the return value. */ | |
2254 | ||
2255 | LONGEST | |
2256 | target_read_alloc (struct target_ops *ops, enum target_object object, | |
2257 | const char *annex, gdb_byte **buf_p) | |
2258 | { | |
2259 | return target_read_alloc_1 (ops, object, annex, buf_p, 0); | |
2260 | } | |
2261 | ||
2262 | /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and | |
2263 | returned as a string, allocated using xmalloc. If an error occurs | |
2264 | or the transfer is unsupported, NULL is returned. Empty objects | |
2265 | are returned as allocated but empty strings. A warning is issued | |
2266 | if the result contains any embedded NUL bytes. */ | |
2267 | ||
2268 | char * | |
2269 | target_read_stralloc (struct target_ops *ops, enum target_object object, | |
2270 | const char *annex) | |
2271 | { | |
39086a0e PA |
2272 | gdb_byte *buffer; |
2273 | char *bufstr; | |
7313baad | 2274 | LONGEST i, transferred; |
159f81f3 | 2275 | |
39086a0e PA |
2276 | transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1); |
2277 | bufstr = (char *) buffer; | |
159f81f3 DJ |
2278 | |
2279 | if (transferred < 0) | |
2280 | return NULL; | |
2281 | ||
2282 | if (transferred == 0) | |
2283 | return xstrdup (""); | |
2284 | ||
39086a0e | 2285 | bufstr[transferred] = 0; |
7313baad UW |
2286 | |
2287 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
39086a0e PA |
2288 | for (i = strlen (bufstr); i < transferred; i++) |
2289 | if (bufstr[i] != 0) | |
7313baad UW |
2290 | { |
2291 | warning (_("target object %d, annex %s, " | |
2292 | "contained unexpected null characters"), | |
2293 | (int) object, annex ? annex : "(none)"); | |
2294 | break; | |
2295 | } | |
159f81f3 | 2296 | |
39086a0e | 2297 | return bufstr; |
159f81f3 DJ |
2298 | } |
2299 | ||
b6591e8b AC |
2300 | /* Memory transfer methods. */ |
2301 | ||
2302 | void | |
1b0ba102 | 2303 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
2304 | LONGEST len) |
2305 | { | |
07b82ea5 PA |
2306 | /* This method is used to read from an alternate, non-current |
2307 | target. This read must bypass the overlay support (as symbols | |
2308 | don't match this target), and GDB's internal cache (wrong cache | |
2309 | for this target). */ | |
2310 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) | |
b6591e8b | 2311 | != len) |
578d3588 | 2312 | memory_error (TARGET_XFER_E_IO, addr); |
b6591e8b AC |
2313 | } |
2314 | ||
2315 | ULONGEST | |
5d502164 MS |
2316 | get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr, |
2317 | int len, enum bfd_endian byte_order) | |
b6591e8b | 2318 | { |
f6519ebc | 2319 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
2320 | |
2321 | gdb_assert (len <= sizeof (buf)); | |
2322 | get_target_memory (ops, addr, buf, len); | |
e17a4113 | 2323 | return extract_unsigned_integer (buf, len, byte_order); |
b6591e8b AC |
2324 | } |
2325 | ||
3db08215 MM |
2326 | /* See target.h. */ |
2327 | ||
d914c394 SS |
2328 | int |
2329 | target_insert_breakpoint (struct gdbarch *gdbarch, | |
2330 | struct bp_target_info *bp_tgt) | |
2331 | { | |
2332 | if (!may_insert_breakpoints) | |
2333 | { | |
2334 | warning (_("May not insert breakpoints")); | |
2335 | return 1; | |
2336 | } | |
2337 | ||
6b84065d TT |
2338 | return current_target.to_insert_breakpoint (¤t_target, |
2339 | gdbarch, bp_tgt); | |
d914c394 SS |
2340 | } |
2341 | ||
3db08215 MM |
2342 | /* See target.h. */ |
2343 | ||
d914c394 | 2344 | int |
6b84065d TT |
2345 | target_remove_breakpoint (struct gdbarch *gdbarch, |
2346 | struct bp_target_info *bp_tgt) | |
d914c394 SS |
2347 | { |
2348 | /* This is kind of a weird case to handle, but the permission might | |
2349 | have been changed after breakpoints were inserted - in which case | |
2350 | we should just take the user literally and assume that any | |
2351 | breakpoints should be left in place. */ | |
2352 | if (!may_insert_breakpoints) | |
2353 | { | |
2354 | warning (_("May not remove breakpoints")); | |
2355 | return 1; | |
2356 | } | |
2357 | ||
6b84065d TT |
2358 | return current_target.to_remove_breakpoint (¤t_target, |
2359 | gdbarch, bp_tgt); | |
d914c394 SS |
2360 | } |
2361 | ||
c906108c | 2362 | static void |
fba45db2 | 2363 | target_info (char *args, int from_tty) |
c906108c SS |
2364 | { |
2365 | struct target_ops *t; | |
c906108c | 2366 | int has_all_mem = 0; |
c5aa993b | 2367 | |
c906108c | 2368 | if (symfile_objfile != NULL) |
4262abfb JK |
2369 | printf_unfiltered (_("Symbols from \"%s\".\n"), |
2370 | objfile_name (symfile_objfile)); | |
c906108c | 2371 | |
258b763a | 2372 | for (t = target_stack; t != NULL; t = t->beneath) |
c906108c | 2373 | { |
c35b1492 | 2374 | if (!(*t->to_has_memory) (t)) |
c906108c SS |
2375 | continue; |
2376 | ||
c5aa993b | 2377 | if ((int) (t->to_stratum) <= (int) dummy_stratum) |
c906108c SS |
2378 | continue; |
2379 | if (has_all_mem) | |
3e43a32a MS |
2380 | printf_unfiltered (_("\tWhile running this, " |
2381 | "GDB does not access memory from...\n")); | |
c5aa993b JM |
2382 | printf_unfiltered ("%s:\n", t->to_longname); |
2383 | (t->to_files_info) (t); | |
c35b1492 | 2384 | has_all_mem = (*t->to_has_all_memory) (t); |
c906108c SS |
2385 | } |
2386 | } | |
2387 | ||
fd79ecee DJ |
2388 | /* This function is called before any new inferior is created, e.g. |
2389 | by running a program, attaching, or connecting to a target. | |
2390 | It cleans up any state from previous invocations which might | |
2391 | change between runs. This is a subset of what target_preopen | |
2392 | resets (things which might change between targets). */ | |
2393 | ||
2394 | void | |
2395 | target_pre_inferior (int from_tty) | |
2396 | { | |
c378eb4e | 2397 | /* Clear out solib state. Otherwise the solib state of the previous |
b9db4ced | 2398 | inferior might have survived and is entirely wrong for the new |
c378eb4e | 2399 | target. This has been observed on GNU/Linux using glibc 2.3. How |
b9db4ced UW |
2400 | to reproduce: |
2401 | ||
2402 | bash$ ./foo& | |
2403 | [1] 4711 | |
2404 | bash$ ./foo& | |
2405 | [1] 4712 | |
2406 | bash$ gdb ./foo | |
2407 | [...] | |
2408 | (gdb) attach 4711 | |
2409 | (gdb) detach | |
2410 | (gdb) attach 4712 | |
2411 | Cannot access memory at address 0xdeadbeef | |
2412 | */ | |
b9db4ced | 2413 | |
50c71eaf PA |
2414 | /* In some OSs, the shared library list is the same/global/shared |
2415 | across inferiors. If code is shared between processes, so are | |
2416 | memory regions and features. */ | |
f5656ead | 2417 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
50c71eaf PA |
2418 | { |
2419 | no_shared_libraries (NULL, from_tty); | |
2420 | ||
2421 | invalidate_target_mem_regions (); | |
424163ea | 2422 | |
50c71eaf PA |
2423 | target_clear_description (); |
2424 | } | |
8ffcbaaf YQ |
2425 | |
2426 | agent_capability_invalidate (); | |
fd79ecee DJ |
2427 | } |
2428 | ||
b8fa0bfa PA |
2429 | /* Callback for iterate_over_inferiors. Gets rid of the given |
2430 | inferior. */ | |
2431 | ||
2432 | static int | |
2433 | dispose_inferior (struct inferior *inf, void *args) | |
2434 | { | |
2435 | struct thread_info *thread; | |
2436 | ||
2437 | thread = any_thread_of_process (inf->pid); | |
2438 | if (thread) | |
2439 | { | |
2440 | switch_to_thread (thread->ptid); | |
2441 | ||
2442 | /* Core inferiors actually should be detached, not killed. */ | |
2443 | if (target_has_execution) | |
2444 | target_kill (); | |
2445 | else | |
2446 | target_detach (NULL, 0); | |
2447 | } | |
2448 | ||
2449 | return 0; | |
2450 | } | |
2451 | ||
c906108c SS |
2452 | /* This is to be called by the open routine before it does |
2453 | anything. */ | |
2454 | ||
2455 | void | |
fba45db2 | 2456 | target_preopen (int from_tty) |
c906108c | 2457 | { |
c5aa993b | 2458 | dont_repeat (); |
c906108c | 2459 | |
b8fa0bfa | 2460 | if (have_inferiors ()) |
c5aa993b | 2461 | { |
adf40b2e | 2462 | if (!from_tty |
b8fa0bfa PA |
2463 | || !have_live_inferiors () |
2464 | || query (_("A program is being debugged already. Kill it? "))) | |
2465 | iterate_over_inferiors (dispose_inferior, NULL); | |
c906108c | 2466 | else |
8a3fe4f8 | 2467 | error (_("Program not killed.")); |
c906108c SS |
2468 | } |
2469 | ||
2470 | /* Calling target_kill may remove the target from the stack. But if | |
2471 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
2472 | /* Leave the exec target, though. The user may be switching from a |
2473 | live process to a core of the same program. */ | |
460014f5 | 2474 | pop_all_targets_above (file_stratum); |
fd79ecee DJ |
2475 | |
2476 | target_pre_inferior (from_tty); | |
c906108c SS |
2477 | } |
2478 | ||
2479 | /* Detach a target after doing deferred register stores. */ | |
2480 | ||
2481 | void | |
52554a0e | 2482 | target_detach (const char *args, int from_tty) |
c906108c | 2483 | { |
136d6dae VP |
2484 | struct target_ops* t; |
2485 | ||
f5656ead | 2486 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
2487 | /* Don't remove global breakpoints here. They're removed on |
2488 | disconnection from the target. */ | |
2489 | ; | |
2490 | else | |
2491 | /* If we're in breakpoints-always-inserted mode, have to remove | |
2492 | them before detaching. */ | |
dfd4cc63 | 2493 | remove_breakpoints_pid (ptid_get_pid (inferior_ptid)); |
74960c60 | 2494 | |
24291992 PA |
2495 | prepare_for_detach (); |
2496 | ||
09da0d0a TT |
2497 | current_target.to_detach (¤t_target, args, from_tty); |
2498 | if (targetdebug) | |
2499 | fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n", | |
2500 | args, from_tty); | |
c906108c SS |
2501 | } |
2502 | ||
6ad8ae5c DJ |
2503 | void |
2504 | target_disconnect (char *args, int from_tty) | |
2505 | { | |
597320e7 DJ |
2506 | struct target_ops *t; |
2507 | ||
50c71eaf PA |
2508 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
2509 | are global across processes, we have to remove them before | |
2510 | disconnecting. */ | |
74960c60 VP |
2511 | remove_breakpoints (); |
2512 | ||
597320e7 DJ |
2513 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2514 | if (t->to_disconnect != NULL) | |
2515 | { | |
2516 | if (targetdebug) | |
2517 | fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n", | |
2518 | args, from_tty); | |
2519 | t->to_disconnect (t, args, from_tty); | |
2520 | return; | |
2521 | } | |
2522 | ||
2523 | tcomplain (); | |
6ad8ae5c DJ |
2524 | } |
2525 | ||
117de6a9 | 2526 | ptid_t |
47608cb1 | 2527 | target_wait (ptid_t ptid, struct target_waitstatus *status, int options) |
117de6a9 PA |
2528 | { |
2529 | struct target_ops *t; | |
6b84065d TT |
2530 | ptid_t retval = (current_target.to_wait) (¤t_target, ptid, |
2531 | status, options); | |
117de6a9 | 2532 | |
6b84065d | 2533 | if (targetdebug) |
117de6a9 | 2534 | { |
6b84065d TT |
2535 | char *status_string; |
2536 | char *options_string; | |
117de6a9 | 2537 | |
6b84065d TT |
2538 | status_string = target_waitstatus_to_string (status); |
2539 | options_string = target_options_to_string (options); | |
2540 | fprintf_unfiltered (gdb_stdlog, | |
2541 | "target_wait (%d, status, options={%s})" | |
2542 | " = %d, %s\n", | |
2543 | ptid_get_pid (ptid), options_string, | |
2544 | ptid_get_pid (retval), status_string); | |
2545 | xfree (status_string); | |
2546 | xfree (options_string); | |
117de6a9 PA |
2547 | } |
2548 | ||
6b84065d | 2549 | return retval; |
117de6a9 PA |
2550 | } |
2551 | ||
2552 | char * | |
2553 | target_pid_to_str (ptid_t ptid) | |
2554 | { | |
2555 | struct target_ops *t; | |
2556 | ||
2557 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2558 | { | |
2559 | if (t->to_pid_to_str != NULL) | |
2560 | return (*t->to_pid_to_str) (t, ptid); | |
2561 | } | |
2562 | ||
2563 | return normal_pid_to_str (ptid); | |
2564 | } | |
2565 | ||
4694da01 TT |
2566 | char * |
2567 | target_thread_name (struct thread_info *info) | |
2568 | { | |
825828fc | 2569 | return current_target.to_thread_name (¤t_target, info); |
4694da01 TT |
2570 | } |
2571 | ||
e1ac3328 | 2572 | void |
2ea28649 | 2573 | target_resume (ptid_t ptid, int step, enum gdb_signal signal) |
e1ac3328 | 2574 | { |
28439f5e PA |
2575 | struct target_ops *t; |
2576 | ||
4e5d721f | 2577 | target_dcache_invalidate (); |
28439f5e | 2578 | |
6b84065d TT |
2579 | current_target.to_resume (¤t_target, ptid, step, signal); |
2580 | if (targetdebug) | |
2581 | fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n", | |
2582 | ptid_get_pid (ptid), | |
2583 | step ? "step" : "continue", | |
2584 | gdb_signal_to_name (signal)); | |
28439f5e | 2585 | |
6b84065d TT |
2586 | registers_changed_ptid (ptid); |
2587 | set_executing (ptid, 1); | |
2588 | set_running (ptid, 1); | |
2589 | clear_inline_frame_state (ptid); | |
e1ac3328 | 2590 | } |
2455069d UW |
2591 | |
2592 | void | |
2593 | target_pass_signals (int numsigs, unsigned char *pass_signals) | |
2594 | { | |
2595 | struct target_ops *t; | |
2596 | ||
2597 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2598 | { | |
2599 | if (t->to_pass_signals != NULL) | |
2600 | { | |
2601 | if (targetdebug) | |
2602 | { | |
2603 | int i; | |
2604 | ||
2605 | fprintf_unfiltered (gdb_stdlog, "target_pass_signals (%d, {", | |
2606 | numsigs); | |
2607 | ||
2608 | for (i = 0; i < numsigs; i++) | |
2609 | if (pass_signals[i]) | |
2610 | fprintf_unfiltered (gdb_stdlog, " %s", | |
2ea28649 | 2611 | gdb_signal_to_name (i)); |
2455069d UW |
2612 | |
2613 | fprintf_unfiltered (gdb_stdlog, " })\n"); | |
2614 | } | |
2615 | ||
94bedb42 | 2616 | (*t->to_pass_signals) (t, numsigs, pass_signals); |
2455069d UW |
2617 | return; |
2618 | } | |
2619 | } | |
2620 | } | |
2621 | ||
9b224c5e PA |
2622 | void |
2623 | target_program_signals (int numsigs, unsigned char *program_signals) | |
2624 | { | |
2625 | struct target_ops *t; | |
2626 | ||
2627 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2628 | { | |
2629 | if (t->to_program_signals != NULL) | |
2630 | { | |
2631 | if (targetdebug) | |
2632 | { | |
2633 | int i; | |
2634 | ||
2635 | fprintf_unfiltered (gdb_stdlog, "target_program_signals (%d, {", | |
2636 | numsigs); | |
2637 | ||
2638 | for (i = 0; i < numsigs; i++) | |
2639 | if (program_signals[i]) | |
2640 | fprintf_unfiltered (gdb_stdlog, " %s", | |
2ea28649 | 2641 | gdb_signal_to_name (i)); |
9b224c5e PA |
2642 | |
2643 | fprintf_unfiltered (gdb_stdlog, " })\n"); | |
2644 | } | |
2645 | ||
daf5e9b6 | 2646 | (*t->to_program_signals) (t, numsigs, program_signals); |
9b224c5e PA |
2647 | return; |
2648 | } | |
2649 | } | |
2650 | } | |
2651 | ||
ee057212 DJ |
2652 | /* Look through the list of possible targets for a target that can |
2653 | follow forks. */ | |
2654 | ||
2655 | int | |
07107ca6 | 2656 | target_follow_fork (int follow_child, int detach_fork) |
ee057212 DJ |
2657 | { |
2658 | struct target_ops *t; | |
2659 | ||
2660 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2661 | { | |
2662 | if (t->to_follow_fork != NULL) | |
2663 | { | |
07107ca6 | 2664 | int retval = t->to_follow_fork (t, follow_child, detach_fork); |
5d502164 | 2665 | |
ee057212 | 2666 | if (targetdebug) |
07107ca6 LM |
2667 | fprintf_unfiltered (gdb_stdlog, |
2668 | "target_follow_fork (%d, %d) = %d\n", | |
2669 | follow_child, detach_fork, retval); | |
ee057212 DJ |
2670 | return retval; |
2671 | } | |
2672 | } | |
2673 | ||
2674 | /* Some target returned a fork event, but did not know how to follow it. */ | |
2675 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 2676 | _("could not find a target to follow fork")); |
ee057212 DJ |
2677 | } |
2678 | ||
136d6dae VP |
2679 | void |
2680 | target_mourn_inferior (void) | |
2681 | { | |
2682 | struct target_ops *t; | |
5d502164 | 2683 | |
136d6dae VP |
2684 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2685 | { | |
2686 | if (t->to_mourn_inferior != NULL) | |
2687 | { | |
2688 | t->to_mourn_inferior (t); | |
947b8855 PA |
2689 | if (targetdebug) |
2690 | fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n"); | |
efbd6e75 JB |
2691 | |
2692 | /* We no longer need to keep handles on any of the object files. | |
2693 | Make sure to release them to avoid unnecessarily locking any | |
2694 | of them while we're not actually debugging. */ | |
2695 | bfd_cache_close_all (); | |
2696 | ||
136d6dae VP |
2697 | return; |
2698 | } | |
2699 | } | |
2700 | ||
2701 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 2702 | _("could not find a target to follow mourn inferior")); |
136d6dae VP |
2703 | } |
2704 | ||
424163ea DJ |
2705 | /* Look for a target which can describe architectural features, starting |
2706 | from TARGET. If we find one, return its description. */ | |
2707 | ||
2708 | const struct target_desc * | |
2709 | target_read_description (struct target_ops *target) | |
2710 | { | |
2711 | struct target_ops *t; | |
2712 | ||
2713 | for (t = target; t != NULL; t = t->beneath) | |
2714 | if (t->to_read_description != NULL) | |
2715 | { | |
2716 | const struct target_desc *tdesc; | |
2717 | ||
2718 | tdesc = t->to_read_description (t); | |
2719 | if (tdesc) | |
2720 | return tdesc; | |
2721 | } | |
2722 | ||
2723 | return NULL; | |
2724 | } | |
2725 | ||
08388c79 DE |
2726 | /* The default implementation of to_search_memory. |
2727 | This implements a basic search of memory, reading target memory and | |
2728 | performing the search here (as opposed to performing the search in on the | |
2729 | target side with, for example, gdbserver). */ | |
2730 | ||
2731 | int | |
2732 | simple_search_memory (struct target_ops *ops, | |
2733 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2734 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2735 | CORE_ADDR *found_addrp) | |
2736 | { | |
2737 | /* NOTE: also defined in find.c testcase. */ | |
2738 | #define SEARCH_CHUNK_SIZE 16000 | |
2739 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
2740 | /* Buffer to hold memory contents for searching. */ | |
2741 | gdb_byte *search_buf; | |
2742 | unsigned search_buf_size; | |
2743 | struct cleanup *old_cleanups; | |
2744 | ||
2745 | search_buf_size = chunk_size + pattern_len - 1; | |
2746 | ||
2747 | /* No point in trying to allocate a buffer larger than the search space. */ | |
2748 | if (search_space_len < search_buf_size) | |
2749 | search_buf_size = search_space_len; | |
2750 | ||
2751 | search_buf = malloc (search_buf_size); | |
2752 | if (search_buf == NULL) | |
5e1471f5 | 2753 | error (_("Unable to allocate memory to perform the search.")); |
08388c79 DE |
2754 | old_cleanups = make_cleanup (free_current_contents, &search_buf); |
2755 | ||
2756 | /* Prime the search buffer. */ | |
2757 | ||
2758 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2759 | search_buf, start_addr, search_buf_size) != search_buf_size) | |
2760 | { | |
b3dc46ff AB |
2761 | warning (_("Unable to access %s bytes of target " |
2762 | "memory at %s, halting search."), | |
2763 | pulongest (search_buf_size), hex_string (start_addr)); | |
08388c79 DE |
2764 | do_cleanups (old_cleanups); |
2765 | return -1; | |
2766 | } | |
2767 | ||
2768 | /* Perform the search. | |
2769 | ||
2770 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
2771 | When we've scanned N bytes we copy the trailing bytes to the start and | |
2772 | read in another N bytes. */ | |
2773 | ||
2774 | while (search_space_len >= pattern_len) | |
2775 | { | |
2776 | gdb_byte *found_ptr; | |
2777 | unsigned nr_search_bytes = min (search_space_len, search_buf_size); | |
2778 | ||
2779 | found_ptr = memmem (search_buf, nr_search_bytes, | |
2780 | pattern, pattern_len); | |
2781 | ||
2782 | if (found_ptr != NULL) | |
2783 | { | |
2784 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
5d502164 | 2785 | |
08388c79 DE |
2786 | *found_addrp = found_addr; |
2787 | do_cleanups (old_cleanups); | |
2788 | return 1; | |
2789 | } | |
2790 | ||
2791 | /* Not found in this chunk, skip to next chunk. */ | |
2792 | ||
2793 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
2794 | if (search_space_len >= chunk_size) | |
2795 | search_space_len -= chunk_size; | |
2796 | else | |
2797 | search_space_len = 0; | |
2798 | ||
2799 | if (search_space_len >= pattern_len) | |
2800 | { | |
2801 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 2802 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
2803 | int nr_to_read; |
2804 | ||
2805 | /* Copy the trailing part of the previous iteration to the front | |
2806 | of the buffer for the next iteration. */ | |
2807 | gdb_assert (keep_len == pattern_len - 1); | |
2808 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
2809 | ||
2810 | nr_to_read = min (search_space_len - keep_len, chunk_size); | |
2811 | ||
2812 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2813 | search_buf + keep_len, read_addr, | |
2814 | nr_to_read) != nr_to_read) | |
2815 | { | |
b3dc46ff | 2816 | warning (_("Unable to access %s bytes of target " |
9b20d036 | 2817 | "memory at %s, halting search."), |
b3dc46ff | 2818 | plongest (nr_to_read), |
08388c79 DE |
2819 | hex_string (read_addr)); |
2820 | do_cleanups (old_cleanups); | |
2821 | return -1; | |
2822 | } | |
2823 | ||
2824 | start_addr += chunk_size; | |
2825 | } | |
2826 | } | |
2827 | ||
2828 | /* Not found. */ | |
2829 | ||
2830 | do_cleanups (old_cleanups); | |
2831 | return 0; | |
2832 | } | |
2833 | ||
2834 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the | |
2835 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2836 | ||
2837 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2838 | requiring halting of the search (e.g. memory read error). | |
2839 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2840 | ||
2841 | int | |
2842 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2843 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2844 | CORE_ADDR *found_addrp) | |
2845 | { | |
2846 | struct target_ops *t; | |
2847 | int found; | |
2848 | ||
2849 | /* We don't use INHERIT to set current_target.to_search_memory, | |
2850 | so we have to scan the target stack and handle targetdebug | |
2851 | ourselves. */ | |
2852 | ||
2853 | if (targetdebug) | |
2854 | fprintf_unfiltered (gdb_stdlog, "target_search_memory (%s, ...)\n", | |
2855 | hex_string (start_addr)); | |
2856 | ||
2857 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2858 | if (t->to_search_memory != NULL) | |
2859 | break; | |
2860 | ||
2861 | if (t != NULL) | |
2862 | { | |
2863 | found = t->to_search_memory (t, start_addr, search_space_len, | |
2864 | pattern, pattern_len, found_addrp); | |
2865 | } | |
2866 | else | |
2867 | { | |
2868 | /* If a special version of to_search_memory isn't available, use the | |
2869 | simple version. */ | |
c35b1492 | 2870 | found = simple_search_memory (current_target.beneath, |
08388c79 DE |
2871 | start_addr, search_space_len, |
2872 | pattern, pattern_len, found_addrp); | |
2873 | } | |
2874 | ||
2875 | if (targetdebug) | |
2876 | fprintf_unfiltered (gdb_stdlog, " = %d\n", found); | |
2877 | ||
2878 | return found; | |
2879 | } | |
2880 | ||
8edfe269 DJ |
2881 | /* Look through the currently pushed targets. If none of them will |
2882 | be able to restart the currently running process, issue an error | |
2883 | message. */ | |
2884 | ||
2885 | void | |
2886 | target_require_runnable (void) | |
2887 | { | |
2888 | struct target_ops *t; | |
2889 | ||
2890 | for (t = target_stack; t != NULL; t = t->beneath) | |
2891 | { | |
2892 | /* If this target knows how to create a new program, then | |
2893 | assume we will still be able to after killing the current | |
2894 | one. Either killing and mourning will not pop T, or else | |
2895 | find_default_run_target will find it again. */ | |
2896 | if (t->to_create_inferior != NULL) | |
2897 | return; | |
2898 | ||
2899 | /* Do not worry about thread_stratum targets that can not | |
2900 | create inferiors. Assume they will be pushed again if | |
2901 | necessary, and continue to the process_stratum. */ | |
85e747d2 UW |
2902 | if (t->to_stratum == thread_stratum |
2903 | || t->to_stratum == arch_stratum) | |
8edfe269 DJ |
2904 | continue; |
2905 | ||
3e43a32a MS |
2906 | error (_("The \"%s\" target does not support \"run\". " |
2907 | "Try \"help target\" or \"continue\"."), | |
8edfe269 DJ |
2908 | t->to_shortname); |
2909 | } | |
2910 | ||
2911 | /* This function is only called if the target is running. In that | |
2912 | case there should have been a process_stratum target and it | |
c378eb4e | 2913 | should either know how to create inferiors, or not... */ |
9b20d036 | 2914 | internal_error (__FILE__, __LINE__, _("No targets found")); |
8edfe269 DJ |
2915 | } |
2916 | ||
c906108c SS |
2917 | /* Look through the list of possible targets for a target that can |
2918 | execute a run or attach command without any other data. This is | |
2919 | used to locate the default process stratum. | |
2920 | ||
5f667f2d PA |
2921 | If DO_MESG is not NULL, the result is always valid (error() is |
2922 | called for errors); else, return NULL on error. */ | |
c906108c SS |
2923 | |
2924 | static struct target_ops * | |
fba45db2 | 2925 | find_default_run_target (char *do_mesg) |
c906108c SS |
2926 | { |
2927 | struct target_ops **t; | |
2928 | struct target_ops *runable = NULL; | |
2929 | int count; | |
2930 | ||
2931 | count = 0; | |
2932 | ||
2933 | for (t = target_structs; t < target_structs + target_struct_size; | |
2934 | ++t) | |
2935 | { | |
c5aa993b | 2936 | if ((*t)->to_can_run && target_can_run (*t)) |
c906108c SS |
2937 | { |
2938 | runable = *t; | |
2939 | ++count; | |
2940 | } | |
2941 | } | |
2942 | ||
2943 | if (count != 1) | |
5f667f2d PA |
2944 | { |
2945 | if (do_mesg) | |
2946 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
2947 | else | |
2948 | return NULL; | |
2949 | } | |
c906108c SS |
2950 | |
2951 | return runable; | |
2952 | } | |
2953 | ||
2954 | void | |
136d6dae | 2955 | find_default_attach (struct target_ops *ops, char *args, int from_tty) |
c906108c SS |
2956 | { |
2957 | struct target_ops *t; | |
2958 | ||
c5aa993b | 2959 | t = find_default_run_target ("attach"); |
136d6dae | 2960 | (t->to_attach) (t, args, from_tty); |
c906108c SS |
2961 | return; |
2962 | } | |
2963 | ||
c906108c | 2964 | void |
136d6dae VP |
2965 | find_default_create_inferior (struct target_ops *ops, |
2966 | char *exec_file, char *allargs, char **env, | |
c27cda74 | 2967 | int from_tty) |
c906108c SS |
2968 | { |
2969 | struct target_ops *t; | |
2970 | ||
c5aa993b | 2971 | t = find_default_run_target ("run"); |
136d6dae | 2972 | (t->to_create_inferior) (t, exec_file, allargs, env, from_tty); |
c906108c SS |
2973 | return; |
2974 | } | |
2975 | ||
2c0b251b | 2976 | static int |
6a109b6b | 2977 | find_default_can_async_p (struct target_ops *ignore) |
b84876c2 PA |
2978 | { |
2979 | struct target_ops *t; | |
2980 | ||
5f667f2d PA |
2981 | /* This may be called before the target is pushed on the stack; |
2982 | look for the default process stratum. If there's none, gdb isn't | |
2983 | configured with a native debugger, and target remote isn't | |
2984 | connected yet. */ | |
2985 | t = find_default_run_target (NULL); | |
6b84065d | 2986 | if (t && t->to_can_async_p != delegate_can_async_p) |
6a109b6b | 2987 | return (t->to_can_async_p) (t); |
b84876c2 PA |
2988 | return 0; |
2989 | } | |
2990 | ||
2c0b251b | 2991 | static int |
6a109b6b | 2992 | find_default_is_async_p (struct target_ops *ignore) |
b84876c2 PA |
2993 | { |
2994 | struct target_ops *t; | |
2995 | ||
5f667f2d PA |
2996 | /* This may be called before the target is pushed on the stack; |
2997 | look for the default process stratum. If there's none, gdb isn't | |
2998 | configured with a native debugger, and target remote isn't | |
2999 | connected yet. */ | |
3000 | t = find_default_run_target (NULL); | |
6b84065d | 3001 | if (t && t->to_is_async_p != delegate_is_async_p) |
6a109b6b | 3002 | return (t->to_is_async_p) (t); |
b84876c2 PA |
3003 | return 0; |
3004 | } | |
3005 | ||
2c0b251b | 3006 | static int |
2a9a2795 | 3007 | find_default_supports_non_stop (struct target_ops *self) |
9908b566 VP |
3008 | { |
3009 | struct target_ops *t; | |
3010 | ||
3011 | t = find_default_run_target (NULL); | |
3012 | if (t && t->to_supports_non_stop) | |
2a9a2795 | 3013 | return (t->to_supports_non_stop) (t); |
9908b566 VP |
3014 | return 0; |
3015 | } | |
3016 | ||
3017 | int | |
2c0b251b | 3018 | target_supports_non_stop (void) |
9908b566 VP |
3019 | { |
3020 | struct target_ops *t; | |
5d502164 | 3021 | |
9908b566 VP |
3022 | for (t = ¤t_target; t != NULL; t = t->beneath) |
3023 | if (t->to_supports_non_stop) | |
2a9a2795 | 3024 | return t->to_supports_non_stop (t); |
9908b566 VP |
3025 | |
3026 | return 0; | |
3027 | } | |
3028 | ||
145b16a9 UW |
3029 | /* Implement the "info proc" command. */ |
3030 | ||
451b7c33 | 3031 | int |
145b16a9 UW |
3032 | target_info_proc (char *args, enum info_proc_what what) |
3033 | { | |
3034 | struct target_ops *t; | |
3035 | ||
3036 | /* If we're already connected to something that can get us OS | |
3037 | related data, use it. Otherwise, try using the native | |
3038 | target. */ | |
3039 | if (current_target.to_stratum >= process_stratum) | |
3040 | t = current_target.beneath; | |
3041 | else | |
3042 | t = find_default_run_target (NULL); | |
3043 | ||
3044 | for (; t != NULL; t = t->beneath) | |
3045 | { | |
3046 | if (t->to_info_proc != NULL) | |
3047 | { | |
3048 | t->to_info_proc (t, args, what); | |
3049 | ||
3050 | if (targetdebug) | |
3051 | fprintf_unfiltered (gdb_stdlog, | |
3052 | "target_info_proc (\"%s\", %d)\n", args, what); | |
3053 | ||
451b7c33 | 3054 | return 1; |
145b16a9 UW |
3055 | } |
3056 | } | |
3057 | ||
451b7c33 | 3058 | return 0; |
145b16a9 UW |
3059 | } |
3060 | ||
03583c20 | 3061 | static int |
2bfc0540 | 3062 | find_default_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
3063 | { |
3064 | struct target_ops *t; | |
3065 | ||
3066 | t = find_default_run_target (NULL); | |
3067 | if (t && t->to_supports_disable_randomization) | |
2bfc0540 | 3068 | return (t->to_supports_disable_randomization) (t); |
03583c20 UW |
3069 | return 0; |
3070 | } | |
3071 | ||
3072 | int | |
3073 | target_supports_disable_randomization (void) | |
3074 | { | |
3075 | struct target_ops *t; | |
3076 | ||
3077 | for (t = ¤t_target; t != NULL; t = t->beneath) | |
3078 | if (t->to_supports_disable_randomization) | |
2bfc0540 | 3079 | return t->to_supports_disable_randomization (t); |
03583c20 UW |
3080 | |
3081 | return 0; | |
3082 | } | |
9908b566 | 3083 | |
07e059b5 VP |
3084 | char * |
3085 | target_get_osdata (const char *type) | |
3086 | { | |
07e059b5 VP |
3087 | struct target_ops *t; |
3088 | ||
739ef7fb PA |
3089 | /* If we're already connected to something that can get us OS |
3090 | related data, use it. Otherwise, try using the native | |
3091 | target. */ | |
3092 | if (current_target.to_stratum >= process_stratum) | |
6d097e65 | 3093 | t = current_target.beneath; |
739ef7fb PA |
3094 | else |
3095 | t = find_default_run_target ("get OS data"); | |
07e059b5 VP |
3096 | |
3097 | if (!t) | |
3098 | return NULL; | |
3099 | ||
6d097e65 | 3100 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
3101 | } |
3102 | ||
6c95b8df PA |
3103 | /* Determine the current address space of thread PTID. */ |
3104 | ||
3105 | struct address_space * | |
3106 | target_thread_address_space (ptid_t ptid) | |
3107 | { | |
c0694254 | 3108 | struct address_space *aspace; |
6c95b8df | 3109 | struct inferior *inf; |
c0694254 PA |
3110 | struct target_ops *t; |
3111 | ||
3112 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3113 | { | |
3114 | if (t->to_thread_address_space != NULL) | |
3115 | { | |
3116 | aspace = t->to_thread_address_space (t, ptid); | |
3117 | gdb_assert (aspace); | |
6c95b8df | 3118 | |
c0694254 PA |
3119 | if (targetdebug) |
3120 | fprintf_unfiltered (gdb_stdlog, | |
3121 | "target_thread_address_space (%s) = %d\n", | |
3122 | target_pid_to_str (ptid), | |
3123 | address_space_num (aspace)); | |
3124 | return aspace; | |
3125 | } | |
3126 | } | |
6c95b8df PA |
3127 | |
3128 | /* Fall-back to the "main" address space of the inferior. */ | |
3129 | inf = find_inferior_pid (ptid_get_pid (ptid)); | |
3130 | ||
3131 | if (inf == NULL || inf->aspace == NULL) | |
3e43a32a | 3132 | internal_error (__FILE__, __LINE__, |
9b20d036 MS |
3133 | _("Can't determine the current " |
3134 | "address space of thread %s\n"), | |
6c95b8df PA |
3135 | target_pid_to_str (ptid)); |
3136 | ||
3137 | return inf->aspace; | |
3138 | } | |
3139 | ||
7313baad UW |
3140 | |
3141 | /* Target file operations. */ | |
3142 | ||
3143 | static struct target_ops * | |
3144 | default_fileio_target (void) | |
3145 | { | |
3146 | /* If we're already connected to something that can perform | |
3147 | file I/O, use it. Otherwise, try using the native target. */ | |
3148 | if (current_target.to_stratum >= process_stratum) | |
3149 | return current_target.beneath; | |
3150 | else | |
3151 | return find_default_run_target ("file I/O"); | |
3152 | } | |
3153 | ||
3154 | /* Open FILENAME on the target, using FLAGS and MODE. Return a | |
3155 | target file descriptor, or -1 if an error occurs (and set | |
3156 | *TARGET_ERRNO). */ | |
3157 | int | |
3158 | target_fileio_open (const char *filename, int flags, int mode, | |
3159 | int *target_errno) | |
3160 | { | |
3161 | struct target_ops *t; | |
3162 | ||
3163 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3164 | { | |
3165 | if (t->to_fileio_open != NULL) | |
3166 | { | |
cd897586 | 3167 | int fd = t->to_fileio_open (t, filename, flags, mode, target_errno); |
7313baad UW |
3168 | |
3169 | if (targetdebug) | |
3170 | fprintf_unfiltered (gdb_stdlog, | |
3171 | "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n", | |
3172 | filename, flags, mode, | |
3173 | fd, fd != -1 ? 0 : *target_errno); | |
3174 | return fd; | |
3175 | } | |
3176 | } | |
3177 | ||
3178 | *target_errno = FILEIO_ENOSYS; | |
3179 | return -1; | |
3180 | } | |
3181 | ||
3182 | /* Write up to LEN bytes from WRITE_BUF to FD on the target. | |
3183 | Return the number of bytes written, or -1 if an error occurs | |
3184 | (and set *TARGET_ERRNO). */ | |
3185 | int | |
3186 | target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
3187 | ULONGEST offset, int *target_errno) | |
3188 | { | |
3189 | struct target_ops *t; | |
3190 | ||
3191 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3192 | { | |
3193 | if (t->to_fileio_pwrite != NULL) | |
3194 | { | |
0d866f62 | 3195 | int ret = t->to_fileio_pwrite (t, fd, write_buf, len, offset, |
7313baad UW |
3196 | target_errno); |
3197 | ||
3198 | if (targetdebug) | |
3199 | fprintf_unfiltered (gdb_stdlog, | |
a71b5a38 | 3200 | "target_fileio_pwrite (%d,...,%d,%s) " |
7313baad | 3201 | "= %d (%d)\n", |
a71b5a38 | 3202 | fd, len, pulongest (offset), |
7313baad UW |
3203 | ret, ret != -1 ? 0 : *target_errno); |
3204 | return ret; | |
3205 | } | |
3206 | } | |
3207 | ||
3208 | *target_errno = FILEIO_ENOSYS; | |
3209 | return -1; | |
3210 | } | |
3211 | ||
3212 | /* Read up to LEN bytes FD on the target into READ_BUF. | |
3213 | Return the number of bytes read, or -1 if an error occurs | |
3214 | (and set *TARGET_ERRNO). */ | |
3215 | int | |
3216 | target_fileio_pread (int fd, gdb_byte *read_buf, int len, | |
3217 | ULONGEST offset, int *target_errno) | |
3218 | { | |
3219 | struct target_ops *t; | |
3220 | ||
3221 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3222 | { | |
3223 | if (t->to_fileio_pread != NULL) | |
3224 | { | |
a3be983c | 3225 | int ret = t->to_fileio_pread (t, fd, read_buf, len, offset, |
7313baad UW |
3226 | target_errno); |
3227 | ||
3228 | if (targetdebug) | |
3229 | fprintf_unfiltered (gdb_stdlog, | |
a71b5a38 | 3230 | "target_fileio_pread (%d,...,%d,%s) " |
7313baad | 3231 | "= %d (%d)\n", |
a71b5a38 | 3232 | fd, len, pulongest (offset), |
7313baad UW |
3233 | ret, ret != -1 ? 0 : *target_errno); |
3234 | return ret; | |
3235 | } | |
3236 | } | |
3237 | ||
3238 | *target_errno = FILEIO_ENOSYS; | |
3239 | return -1; | |
3240 | } | |
3241 | ||
3242 | /* Close FD on the target. Return 0, or -1 if an error occurs | |
3243 | (and set *TARGET_ERRNO). */ | |
3244 | int | |
3245 | target_fileio_close (int fd, int *target_errno) | |
3246 | { | |
3247 | struct target_ops *t; | |
3248 | ||
3249 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3250 | { | |
3251 | if (t->to_fileio_close != NULL) | |
3252 | { | |
df39ea25 | 3253 | int ret = t->to_fileio_close (t, fd, target_errno); |
7313baad UW |
3254 | |
3255 | if (targetdebug) | |
3256 | fprintf_unfiltered (gdb_stdlog, | |
3257 | "target_fileio_close (%d) = %d (%d)\n", | |
3258 | fd, ret, ret != -1 ? 0 : *target_errno); | |
3259 | return ret; | |
3260 | } | |
3261 | } | |
3262 | ||
3263 | *target_errno = FILEIO_ENOSYS; | |
3264 | return -1; | |
3265 | } | |
3266 | ||
3267 | /* Unlink FILENAME on the target. Return 0, or -1 if an error | |
3268 | occurs (and set *TARGET_ERRNO). */ | |
3269 | int | |
3270 | target_fileio_unlink (const char *filename, int *target_errno) | |
3271 | { | |
3272 | struct target_ops *t; | |
3273 | ||
3274 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3275 | { | |
3276 | if (t->to_fileio_unlink != NULL) | |
3277 | { | |
dbbca37d | 3278 | int ret = t->to_fileio_unlink (t, filename, target_errno); |
7313baad UW |
3279 | |
3280 | if (targetdebug) | |
3281 | fprintf_unfiltered (gdb_stdlog, | |
3282 | "target_fileio_unlink (%s) = %d (%d)\n", | |
3283 | filename, ret, ret != -1 ? 0 : *target_errno); | |
3284 | return ret; | |
3285 | } | |
3286 | } | |
3287 | ||
3288 | *target_errno = FILEIO_ENOSYS; | |
3289 | return -1; | |
3290 | } | |
3291 | ||
b9e7b9c3 UW |
3292 | /* Read value of symbolic link FILENAME on the target. Return a |
3293 | null-terminated string allocated via xmalloc, or NULL if an error | |
3294 | occurs (and set *TARGET_ERRNO). */ | |
3295 | char * | |
3296 | target_fileio_readlink (const char *filename, int *target_errno) | |
3297 | { | |
3298 | struct target_ops *t; | |
3299 | ||
3300 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3301 | { | |
3302 | if (t->to_fileio_readlink != NULL) | |
3303 | { | |
fab5aa7c | 3304 | char *ret = t->to_fileio_readlink (t, filename, target_errno); |
b9e7b9c3 UW |
3305 | |
3306 | if (targetdebug) | |
3307 | fprintf_unfiltered (gdb_stdlog, | |
3308 | "target_fileio_readlink (%s) = %s (%d)\n", | |
3309 | filename, ret? ret : "(nil)", | |
3310 | ret? 0 : *target_errno); | |
3311 | return ret; | |
3312 | } | |
3313 | } | |
3314 | ||
3315 | *target_errno = FILEIO_ENOSYS; | |
3316 | return NULL; | |
3317 | } | |
3318 | ||
7313baad UW |
3319 | static void |
3320 | target_fileio_close_cleanup (void *opaque) | |
3321 | { | |
3322 | int fd = *(int *) opaque; | |
3323 | int target_errno; | |
3324 | ||
3325 | target_fileio_close (fd, &target_errno); | |
3326 | } | |
3327 | ||
3328 | /* Read target file FILENAME. Store the result in *BUF_P and | |
3329 | return the size of the transferred data. PADDING additional bytes are | |
3330 | available in *BUF_P. This is a helper function for | |
3331 | target_fileio_read_alloc; see the declaration of that function for more | |
3332 | information. */ | |
3333 | ||
3334 | static LONGEST | |
3335 | target_fileio_read_alloc_1 (const char *filename, | |
3336 | gdb_byte **buf_p, int padding) | |
3337 | { | |
3338 | struct cleanup *close_cleanup; | |
3339 | size_t buf_alloc, buf_pos; | |
3340 | gdb_byte *buf; | |
3341 | LONGEST n; | |
3342 | int fd; | |
3343 | int target_errno; | |
3344 | ||
3345 | fd = target_fileio_open (filename, FILEIO_O_RDONLY, 0700, &target_errno); | |
3346 | if (fd == -1) | |
3347 | return -1; | |
3348 | ||
3349 | close_cleanup = make_cleanup (target_fileio_close_cleanup, &fd); | |
3350 | ||
3351 | /* Start by reading up to 4K at a time. The target will throttle | |
3352 | this number down if necessary. */ | |
3353 | buf_alloc = 4096; | |
3354 | buf = xmalloc (buf_alloc); | |
3355 | buf_pos = 0; | |
3356 | while (1) | |
3357 | { | |
3358 | n = target_fileio_pread (fd, &buf[buf_pos], | |
3359 | buf_alloc - buf_pos - padding, buf_pos, | |
3360 | &target_errno); | |
3361 | if (n < 0) | |
3362 | { | |
3363 | /* An error occurred. */ | |
3364 | do_cleanups (close_cleanup); | |
3365 | xfree (buf); | |
3366 | return -1; | |
3367 | } | |
3368 | else if (n == 0) | |
3369 | { | |
3370 | /* Read all there was. */ | |
3371 | do_cleanups (close_cleanup); | |
3372 | if (buf_pos == 0) | |
3373 | xfree (buf); | |
3374 | else | |
3375 | *buf_p = buf; | |
3376 | return buf_pos; | |
3377 | } | |
3378 | ||
3379 | buf_pos += n; | |
3380 | ||
3381 | /* If the buffer is filling up, expand it. */ | |
3382 | if (buf_alloc < buf_pos * 2) | |
3383 | { | |
3384 | buf_alloc *= 2; | |
3385 | buf = xrealloc (buf, buf_alloc); | |
3386 | } | |
3387 | ||
3388 | QUIT; | |
3389 | } | |
3390 | } | |
3391 | ||
3392 | /* Read target file FILENAME. Store the result in *BUF_P and return | |
3393 | the size of the transferred data. See the declaration in "target.h" | |
3394 | function for more information about the return value. */ | |
3395 | ||
3396 | LONGEST | |
3397 | target_fileio_read_alloc (const char *filename, gdb_byte **buf_p) | |
3398 | { | |
3399 | return target_fileio_read_alloc_1 (filename, buf_p, 0); | |
3400 | } | |
3401 | ||
3402 | /* Read target file FILENAME. The result is NUL-terminated and | |
3403 | returned as a string, allocated using xmalloc. If an error occurs | |
3404 | or the transfer is unsupported, NULL is returned. Empty objects | |
3405 | are returned as allocated but empty strings. A warning is issued | |
3406 | if the result contains any embedded NUL bytes. */ | |
3407 | ||
3408 | char * | |
3409 | target_fileio_read_stralloc (const char *filename) | |
3410 | { | |
39086a0e PA |
3411 | gdb_byte *buffer; |
3412 | char *bufstr; | |
7313baad UW |
3413 | LONGEST i, transferred; |
3414 | ||
39086a0e PA |
3415 | transferred = target_fileio_read_alloc_1 (filename, &buffer, 1); |
3416 | bufstr = (char *) buffer; | |
7313baad UW |
3417 | |
3418 | if (transferred < 0) | |
3419 | return NULL; | |
3420 | ||
3421 | if (transferred == 0) | |
3422 | return xstrdup (""); | |
3423 | ||
39086a0e | 3424 | bufstr[transferred] = 0; |
7313baad UW |
3425 | |
3426 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
39086a0e PA |
3427 | for (i = strlen (bufstr); i < transferred; i++) |
3428 | if (bufstr[i] != 0) | |
7313baad UW |
3429 | { |
3430 | warning (_("target file %s " | |
3431 | "contained unexpected null characters"), | |
3432 | filename); | |
3433 | break; | |
3434 | } | |
3435 | ||
39086a0e | 3436 | return bufstr; |
7313baad UW |
3437 | } |
3438 | ||
3439 | ||
e0d24f8d | 3440 | static int |
31568a15 TT |
3441 | default_region_ok_for_hw_watchpoint (struct target_ops *self, |
3442 | CORE_ADDR addr, int len) | |
e0d24f8d | 3443 | { |
f5656ead | 3444 | return (len <= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT); |
ccaa32c7 GS |
3445 | } |
3446 | ||
5009afc5 AS |
3447 | static int |
3448 | default_watchpoint_addr_within_range (struct target_ops *target, | |
3449 | CORE_ADDR addr, | |
3450 | CORE_ADDR start, int length) | |
3451 | { | |
3452 | return addr >= start && addr < start + length; | |
3453 | } | |
3454 | ||
c2250ad1 UW |
3455 | static struct gdbarch * |
3456 | default_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
3457 | { | |
f5656ead | 3458 | return target_gdbarch (); |
c2250ad1 UW |
3459 | } |
3460 | ||
c906108c | 3461 | static int |
fba45db2 | 3462 | return_zero (void) |
c906108c SS |
3463 | { |
3464 | return 0; | |
3465 | } | |
3466 | ||
ed9a39eb JM |
3467 | /* |
3468 | * Find the next target down the stack from the specified target. | |
3469 | */ | |
3470 | ||
3471 | struct target_ops * | |
fba45db2 | 3472 | find_target_beneath (struct target_ops *t) |
ed9a39eb | 3473 | { |
258b763a | 3474 | return t->beneath; |
ed9a39eb JM |
3475 | } |
3476 | ||
8b06beed TT |
3477 | /* See target.h. */ |
3478 | ||
3479 | struct target_ops * | |
3480 | find_target_at (enum strata stratum) | |
3481 | { | |
3482 | struct target_ops *t; | |
3483 | ||
3484 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3485 | if (t->to_stratum == stratum) | |
3486 | return t; | |
3487 | ||
3488 | return NULL; | |
3489 | } | |
3490 | ||
c906108c SS |
3491 | \f |
3492 | /* The inferior process has died. Long live the inferior! */ | |
3493 | ||
3494 | void | |
fba45db2 | 3495 | generic_mourn_inferior (void) |
c906108c | 3496 | { |
7f9f62ba | 3497 | ptid_t ptid; |
c906108c | 3498 | |
7f9f62ba | 3499 | ptid = inferior_ptid; |
39f77062 | 3500 | inferior_ptid = null_ptid; |
7f9f62ba | 3501 | |
f59f708a PA |
3502 | /* Mark breakpoints uninserted in case something tries to delete a |
3503 | breakpoint while we delete the inferior's threads (which would | |
3504 | fail, since the inferior is long gone). */ | |
3505 | mark_breakpoints_out (); | |
3506 | ||
7f9f62ba PA |
3507 | if (!ptid_equal (ptid, null_ptid)) |
3508 | { | |
3509 | int pid = ptid_get_pid (ptid); | |
6c95b8df | 3510 | exit_inferior (pid); |
7f9f62ba PA |
3511 | } |
3512 | ||
f59f708a PA |
3513 | /* Note this wipes step-resume breakpoints, so needs to be done |
3514 | after exit_inferior, which ends up referencing the step-resume | |
3515 | breakpoints through clear_thread_inferior_resources. */ | |
c906108c | 3516 | breakpoint_init_inferior (inf_exited); |
f59f708a | 3517 | |
c906108c SS |
3518 | registers_changed (); |
3519 | ||
c906108c SS |
3520 | reopen_exec_file (); |
3521 | reinit_frame_cache (); | |
3522 | ||
9a4105ab AC |
3523 | if (deprecated_detach_hook) |
3524 | deprecated_detach_hook (); | |
c906108c SS |
3525 | } |
3526 | \f | |
fd0a2a6f MK |
3527 | /* Convert a normal process ID to a string. Returns the string in a |
3528 | static buffer. */ | |
c906108c SS |
3529 | |
3530 | char * | |
39f77062 | 3531 | normal_pid_to_str (ptid_t ptid) |
c906108c | 3532 | { |
fd0a2a6f | 3533 | static char buf[32]; |
c906108c | 3534 | |
5fff8fc0 | 3535 | xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid)); |
c906108c SS |
3536 | return buf; |
3537 | } | |
3538 | ||
2c0b251b | 3539 | static char * |
117de6a9 PA |
3540 | dummy_pid_to_str (struct target_ops *ops, ptid_t ptid) |
3541 | { | |
3542 | return normal_pid_to_str (ptid); | |
3543 | } | |
3544 | ||
9b4eba8e HZ |
3545 | /* Error-catcher for target_find_memory_regions. */ |
3546 | static int | |
2e73927c TT |
3547 | dummy_find_memory_regions (struct target_ops *self, |
3548 | find_memory_region_ftype ignore1, void *ignore2) | |
be4d1333 | 3549 | { |
9b4eba8e | 3550 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3551 | return 0; |
3552 | } | |
3553 | ||
9b4eba8e HZ |
3554 | /* Error-catcher for target_make_corefile_notes. */ |
3555 | static char * | |
fc6691b2 TT |
3556 | dummy_make_corefile_notes (struct target_ops *self, |
3557 | bfd *ignore1, int *ignore2) | |
be4d1333 | 3558 | { |
9b4eba8e | 3559 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3560 | return NULL; |
3561 | } | |
3562 | ||
c906108c SS |
3563 | /* Set up the handful of non-empty slots needed by the dummy target |
3564 | vector. */ | |
3565 | ||
3566 | static void | |
fba45db2 | 3567 | init_dummy_target (void) |
c906108c SS |
3568 | { |
3569 | dummy_target.to_shortname = "None"; | |
3570 | dummy_target.to_longname = "None"; | |
3571 | dummy_target.to_doc = ""; | |
c906108c | 3572 | dummy_target.to_create_inferior = find_default_create_inferior; |
9908b566 | 3573 | dummy_target.to_supports_non_stop = find_default_supports_non_stop; |
03583c20 UW |
3574 | dummy_target.to_supports_disable_randomization |
3575 | = find_default_supports_disable_randomization; | |
117de6a9 | 3576 | dummy_target.to_pid_to_str = dummy_pid_to_str; |
c906108c | 3577 | dummy_target.to_stratum = dummy_stratum; |
c35b1492 PA |
3578 | dummy_target.to_has_all_memory = (int (*) (struct target_ops *)) return_zero; |
3579 | dummy_target.to_has_memory = (int (*) (struct target_ops *)) return_zero; | |
3580 | dummy_target.to_has_stack = (int (*) (struct target_ops *)) return_zero; | |
3581 | dummy_target.to_has_registers = (int (*) (struct target_ops *)) return_zero; | |
aeaec162 TT |
3582 | dummy_target.to_has_execution |
3583 | = (int (*) (struct target_ops *, ptid_t)) return_zero; | |
c906108c | 3584 | dummy_target.to_magic = OPS_MAGIC; |
1101cb7b TT |
3585 | |
3586 | install_dummy_methods (&dummy_target); | |
c906108c | 3587 | } |
c906108c | 3588 | \f |
c906108c | 3589 | static void |
fba45db2 | 3590 | debug_to_open (char *args, int from_tty) |
c906108c SS |
3591 | { |
3592 | debug_target.to_open (args, from_tty); | |
3593 | ||
96baa820 | 3594 | fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty); |
c906108c SS |
3595 | } |
3596 | ||
f1c07ab0 | 3597 | void |
460014f5 | 3598 | target_close (struct target_ops *targ) |
f1c07ab0 | 3599 | { |
7fdc1521 TT |
3600 | gdb_assert (!target_is_pushed (targ)); |
3601 | ||
f1c07ab0 | 3602 | if (targ->to_xclose != NULL) |
460014f5 | 3603 | targ->to_xclose (targ); |
f1c07ab0 | 3604 | else if (targ->to_close != NULL) |
de90e03d | 3605 | targ->to_close (targ); |
947b8855 PA |
3606 | |
3607 | if (targetdebug) | |
460014f5 | 3608 | fprintf_unfiltered (gdb_stdlog, "target_close ()\n"); |
f1c07ab0 AC |
3609 | } |
3610 | ||
136d6dae VP |
3611 | void |
3612 | target_attach (char *args, int from_tty) | |
3613 | { | |
e9a29200 TT |
3614 | current_target.to_attach (¤t_target, args, from_tty); |
3615 | if (targetdebug) | |
3616 | fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n", | |
3617 | args, from_tty); | |
136d6dae VP |
3618 | } |
3619 | ||
28439f5e PA |
3620 | int |
3621 | target_thread_alive (ptid_t ptid) | |
c906108c | 3622 | { |
28439f5e | 3623 | struct target_ops *t; |
5d502164 | 3624 | |
28439f5e PA |
3625 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3626 | { | |
3627 | if (t->to_thread_alive != NULL) | |
3628 | { | |
3629 | int retval; | |
c906108c | 3630 | |
28439f5e PA |
3631 | retval = t->to_thread_alive (t, ptid); |
3632 | if (targetdebug) | |
3633 | fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n", | |
dfd4cc63 | 3634 | ptid_get_pid (ptid), retval); |
28439f5e PA |
3635 | |
3636 | return retval; | |
3637 | } | |
3638 | } | |
3639 | ||
3640 | return 0; | |
3641 | } | |
3642 | ||
3643 | void | |
3644 | target_find_new_threads (void) | |
3645 | { | |
3646 | struct target_ops *t; | |
5d502164 | 3647 | |
28439f5e PA |
3648 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3649 | { | |
3650 | if (t->to_find_new_threads != NULL) | |
3651 | { | |
3652 | t->to_find_new_threads (t); | |
3653 | if (targetdebug) | |
3654 | fprintf_unfiltered (gdb_stdlog, "target_find_new_threads ()\n"); | |
3655 | ||
3656 | return; | |
3657 | } | |
3658 | } | |
c906108c SS |
3659 | } |
3660 | ||
d914c394 SS |
3661 | void |
3662 | target_stop (ptid_t ptid) | |
3663 | { | |
3664 | if (!may_stop) | |
3665 | { | |
3666 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3667 | return; | |
3668 | } | |
3669 | ||
1eab8a48 | 3670 | (*current_target.to_stop) (¤t_target, ptid); |
d914c394 SS |
3671 | } |
3672 | ||
c906108c | 3673 | static void |
f045800c | 3674 | debug_to_post_attach (struct target_ops *self, int pid) |
c906108c | 3675 | { |
f045800c | 3676 | debug_target.to_post_attach (&debug_target, pid); |
c906108c | 3677 | |
28439f5e | 3678 | fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid); |
c906108c SS |
3679 | } |
3680 | ||
09826ec5 PA |
3681 | /* Concatenate ELEM to LIST, a comma separate list, and return the |
3682 | result. The LIST incoming argument is released. */ | |
3683 | ||
3684 | static char * | |
3685 | str_comma_list_concat_elem (char *list, const char *elem) | |
3686 | { | |
3687 | if (list == NULL) | |
3688 | return xstrdup (elem); | |
3689 | else | |
3690 | return reconcat (list, list, ", ", elem, (char *) NULL); | |
3691 | } | |
3692 | ||
3693 | /* Helper for target_options_to_string. If OPT is present in | |
3694 | TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET. | |
3695 | Returns the new resulting string. OPT is removed from | |
3696 | TARGET_OPTIONS. */ | |
3697 | ||
3698 | static char * | |
3699 | do_option (int *target_options, char *ret, | |
3700 | int opt, char *opt_str) | |
3701 | { | |
3702 | if ((*target_options & opt) != 0) | |
3703 | { | |
3704 | ret = str_comma_list_concat_elem (ret, opt_str); | |
3705 | *target_options &= ~opt; | |
3706 | } | |
3707 | ||
3708 | return ret; | |
3709 | } | |
3710 | ||
3711 | char * | |
3712 | target_options_to_string (int target_options) | |
3713 | { | |
3714 | char *ret = NULL; | |
3715 | ||
3716 | #define DO_TARG_OPTION(OPT) \ | |
3717 | ret = do_option (&target_options, ret, OPT, #OPT) | |
3718 | ||
3719 | DO_TARG_OPTION (TARGET_WNOHANG); | |
3720 | ||
3721 | if (target_options != 0) | |
3722 | ret = str_comma_list_concat_elem (ret, "unknown???"); | |
3723 | ||
3724 | if (ret == NULL) | |
3725 | ret = xstrdup (""); | |
3726 | return ret; | |
3727 | } | |
3728 | ||
bf0c5130 | 3729 | static void |
56be3814 UW |
3730 | debug_print_register (const char * func, |
3731 | struct regcache *regcache, int regno) | |
bf0c5130 | 3732 | { |
f8d29908 | 3733 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
5d502164 | 3734 | |
bf0c5130 | 3735 | fprintf_unfiltered (gdb_stdlog, "%s ", func); |
f8d29908 | 3736 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) |
f8d29908 UW |
3737 | && gdbarch_register_name (gdbarch, regno) != NULL |
3738 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') | |
3739 | fprintf_unfiltered (gdb_stdlog, "(%s)", | |
3740 | gdbarch_register_name (gdbarch, regno)); | |
bf0c5130 AC |
3741 | else |
3742 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
0ff58721 | 3743 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) |
bf0c5130 | 3744 | { |
e17a4113 | 3745 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
f8d29908 | 3746 | int i, size = register_size (gdbarch, regno); |
e362b510 | 3747 | gdb_byte buf[MAX_REGISTER_SIZE]; |
5d502164 | 3748 | |
0ff58721 | 3749 | regcache_raw_collect (regcache, regno, buf); |
bf0c5130 | 3750 | fprintf_unfiltered (gdb_stdlog, " = "); |
81c4a259 | 3751 | for (i = 0; i < size; i++) |
bf0c5130 AC |
3752 | { |
3753 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
3754 | } | |
81c4a259 | 3755 | if (size <= sizeof (LONGEST)) |
bf0c5130 | 3756 | { |
e17a4113 | 3757 | ULONGEST val = extract_unsigned_integer (buf, size, byte_order); |
5d502164 | 3758 | |
0b1553bc UW |
3759 | fprintf_unfiltered (gdb_stdlog, " %s %s", |
3760 | core_addr_to_string_nz (val), plongest (val)); | |
bf0c5130 AC |
3761 | } |
3762 | } | |
3763 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
3764 | } | |
3765 | ||
28439f5e PA |
3766 | void |
3767 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 3768 | { |
28439f5e | 3769 | struct target_ops *t; |
5d502164 | 3770 | |
28439f5e PA |
3771 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3772 | { | |
3773 | if (t->to_fetch_registers != NULL) | |
3774 | { | |
3775 | t->to_fetch_registers (t, regcache, regno); | |
3776 | if (targetdebug) | |
3777 | debug_print_register ("target_fetch_registers", regcache, regno); | |
3778 | return; | |
3779 | } | |
3780 | } | |
c906108c SS |
3781 | } |
3782 | ||
28439f5e PA |
3783 | void |
3784 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 3785 | { |
28439f5e | 3786 | struct target_ops *t; |
5d502164 | 3787 | |
d914c394 SS |
3788 | if (!may_write_registers) |
3789 | error (_("Writing to registers is not allowed (regno %d)"), regno); | |
3790 | ||
6b84065d TT |
3791 | current_target.to_store_registers (¤t_target, regcache, regno); |
3792 | if (targetdebug) | |
28439f5e | 3793 | { |
6b84065d | 3794 | debug_print_register ("target_store_registers", regcache, regno); |
28439f5e | 3795 | } |
c906108c SS |
3796 | } |
3797 | ||
dc146f7c VP |
3798 | int |
3799 | target_core_of_thread (ptid_t ptid) | |
3800 | { | |
3801 | struct target_ops *t; | |
3802 | ||
3803 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3804 | { | |
3805 | if (t->to_core_of_thread != NULL) | |
3806 | { | |
3807 | int retval = t->to_core_of_thread (t, ptid); | |
5d502164 | 3808 | |
dc146f7c | 3809 | if (targetdebug) |
3e43a32a MS |
3810 | fprintf_unfiltered (gdb_stdlog, |
3811 | "target_core_of_thread (%d) = %d\n", | |
dfd4cc63 | 3812 | ptid_get_pid (ptid), retval); |
dc146f7c VP |
3813 | return retval; |
3814 | } | |
3815 | } | |
3816 | ||
3817 | return -1; | |
3818 | } | |
3819 | ||
4a5e7a5b PA |
3820 | int |
3821 | target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3822 | { | |
3823 | struct target_ops *t; | |
3824 | ||
3825 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3826 | { | |
3827 | if (t->to_verify_memory != NULL) | |
3828 | { | |
3829 | int retval = t->to_verify_memory (t, data, memaddr, size); | |
5d502164 | 3830 | |
4a5e7a5b | 3831 | if (targetdebug) |
3e43a32a MS |
3832 | fprintf_unfiltered (gdb_stdlog, |
3833 | "target_verify_memory (%s, %s) = %d\n", | |
f5656ead | 3834 | paddress (target_gdbarch (), memaddr), |
4a5e7a5b PA |
3835 | pulongest (size), |
3836 | retval); | |
3837 | return retval; | |
3838 | } | |
3839 | } | |
3840 | ||
3841 | tcomplain (); | |
3842 | } | |
3843 | ||
9c06b0b4 TJB |
3844 | /* The documentation for this function is in its prototype declaration in |
3845 | target.h. */ | |
3846 | ||
3847 | int | |
3848 | target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
3849 | { | |
3850 | struct target_ops *t; | |
3851 | ||
3852 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3853 | if (t->to_insert_mask_watchpoint != NULL) | |
3854 | { | |
3855 | int ret; | |
3856 | ||
3857 | ret = t->to_insert_mask_watchpoint (t, addr, mask, rw); | |
3858 | ||
3859 | if (targetdebug) | |
3860 | fprintf_unfiltered (gdb_stdlog, "\ | |
3861 | target_insert_mask_watchpoint (%s, %s, %d) = %d\n", | |
3862 | core_addr_to_string (addr), | |
3863 | core_addr_to_string (mask), rw, ret); | |
3864 | ||
3865 | return ret; | |
3866 | } | |
3867 | ||
3868 | return 1; | |
3869 | } | |
3870 | ||
3871 | /* The documentation for this function is in its prototype declaration in | |
3872 | target.h. */ | |
3873 | ||
3874 | int | |
3875 | target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
3876 | { | |
3877 | struct target_ops *t; | |
3878 | ||
3879 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3880 | if (t->to_remove_mask_watchpoint != NULL) | |
3881 | { | |
3882 | int ret; | |
3883 | ||
3884 | ret = t->to_remove_mask_watchpoint (t, addr, mask, rw); | |
3885 | ||
3886 | if (targetdebug) | |
3887 | fprintf_unfiltered (gdb_stdlog, "\ | |
3888 | target_remove_mask_watchpoint (%s, %s, %d) = %d\n", | |
3889 | core_addr_to_string (addr), | |
3890 | core_addr_to_string (mask), rw, ret); | |
3891 | ||
3892 | return ret; | |
3893 | } | |
3894 | ||
3895 | return 1; | |
3896 | } | |
3897 | ||
3898 | /* The documentation for this function is in its prototype declaration | |
3899 | in target.h. */ | |
3900 | ||
3901 | int | |
3902 | target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask) | |
3903 | { | |
3904 | struct target_ops *t; | |
3905 | ||
3906 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3907 | if (t->to_masked_watch_num_registers != NULL) | |
3908 | return t->to_masked_watch_num_registers (t, addr, mask); | |
3909 | ||
3910 | return -1; | |
3911 | } | |
3912 | ||
f1310107 TJB |
3913 | /* The documentation for this function is in its prototype declaration |
3914 | in target.h. */ | |
3915 | ||
3916 | int | |
3917 | target_ranged_break_num_registers (void) | |
3918 | { | |
3919 | struct target_ops *t; | |
3920 | ||
3921 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3922 | if (t->to_ranged_break_num_registers != NULL) | |
3923 | return t->to_ranged_break_num_registers (t); | |
3924 | ||
3925 | return -1; | |
3926 | } | |
3927 | ||
02d27625 MM |
3928 | /* See target.h. */ |
3929 | ||
02d27625 MM |
3930 | struct btrace_target_info * |
3931 | target_enable_btrace (ptid_t ptid) | |
3932 | { | |
3933 | struct target_ops *t; | |
3934 | ||
3935 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3936 | if (t->to_enable_btrace != NULL) | |
e3c49f88 | 3937 | return t->to_enable_btrace (t, ptid); |
02d27625 MM |
3938 | |
3939 | tcomplain (); | |
3940 | return NULL; | |
3941 | } | |
3942 | ||
3943 | /* See target.h. */ | |
3944 | ||
3945 | void | |
3946 | target_disable_btrace (struct btrace_target_info *btinfo) | |
3947 | { | |
3948 | struct target_ops *t; | |
3949 | ||
3950 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3951 | if (t->to_disable_btrace != NULL) | |
d92f7ee3 | 3952 | { |
25e95349 | 3953 | t->to_disable_btrace (t, btinfo); |
d92f7ee3 SDJ |
3954 | return; |
3955 | } | |
02d27625 MM |
3956 | |
3957 | tcomplain (); | |
3958 | } | |
3959 | ||
3960 | /* See target.h. */ | |
3961 | ||
3962 | void | |
3963 | target_teardown_btrace (struct btrace_target_info *btinfo) | |
3964 | { | |
3965 | struct target_ops *t; | |
3966 | ||
3967 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3968 | if (t->to_teardown_btrace != NULL) | |
d92f7ee3 | 3969 | { |
1777056d | 3970 | t->to_teardown_btrace (t, btinfo); |
d92f7ee3 SDJ |
3971 | return; |
3972 | } | |
02d27625 MM |
3973 | |
3974 | tcomplain (); | |
3975 | } | |
3976 | ||
3977 | /* See target.h. */ | |
3978 | ||
969c39fb MM |
3979 | enum btrace_error |
3980 | target_read_btrace (VEC (btrace_block_s) **btrace, | |
3981 | struct btrace_target_info *btinfo, | |
02d27625 MM |
3982 | enum btrace_read_type type) |
3983 | { | |
3984 | struct target_ops *t; | |
3985 | ||
3986 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3987 | if (t->to_read_btrace != NULL) | |
39c49f83 | 3988 | return t->to_read_btrace (t, btrace, btinfo, type); |
02d27625 MM |
3989 | |
3990 | tcomplain (); | |
969c39fb | 3991 | return BTRACE_ERR_NOT_SUPPORTED; |
02d27625 MM |
3992 | } |
3993 | ||
d02ed0bb MM |
3994 | /* See target.h. */ |
3995 | ||
7c1687a9 MM |
3996 | void |
3997 | target_stop_recording (void) | |
3998 | { | |
3999 | struct target_ops *t; | |
4000 | ||
4001 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4002 | if (t->to_stop_recording != NULL) | |
4003 | { | |
c6cd7c02 | 4004 | t->to_stop_recording (t); |
7c1687a9 MM |
4005 | return; |
4006 | } | |
4007 | ||
4008 | /* This is optional. */ | |
4009 | } | |
4010 | ||
4011 | /* See target.h. */ | |
4012 | ||
d02ed0bb MM |
4013 | void |
4014 | target_info_record (void) | |
4015 | { | |
4016 | struct target_ops *t; | |
4017 | ||
4018 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4019 | if (t->to_info_record != NULL) | |
4020 | { | |
630d6a4a | 4021 | t->to_info_record (t); |
d02ed0bb MM |
4022 | return; |
4023 | } | |
4024 | ||
4025 | tcomplain (); | |
4026 | } | |
4027 | ||
4028 | /* See target.h. */ | |
4029 | ||
4030 | void | |
85e1311a | 4031 | target_save_record (const char *filename) |
d02ed0bb MM |
4032 | { |
4033 | struct target_ops *t; | |
4034 | ||
4035 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4036 | if (t->to_save_record != NULL) | |
4037 | { | |
1390f529 | 4038 | t->to_save_record (t, filename); |
d02ed0bb MM |
4039 | return; |
4040 | } | |
4041 | ||
4042 | tcomplain (); | |
4043 | } | |
4044 | ||
4045 | /* See target.h. */ | |
4046 | ||
4047 | int | |
4048 | target_supports_delete_record (void) | |
4049 | { | |
4050 | struct target_ops *t; | |
4051 | ||
4052 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4053 | if (t->to_delete_record != NULL) | |
4054 | return 1; | |
4055 | ||
4056 | return 0; | |
4057 | } | |
4058 | ||
4059 | /* See target.h. */ | |
4060 | ||
4061 | void | |
4062 | target_delete_record (void) | |
4063 | { | |
4064 | struct target_ops *t; | |
4065 | ||
4066 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4067 | if (t->to_delete_record != NULL) | |
4068 | { | |
d1b55219 | 4069 | t->to_delete_record (t); |
d02ed0bb MM |
4070 | return; |
4071 | } | |
4072 | ||
4073 | tcomplain (); | |
4074 | } | |
4075 | ||
4076 | /* See target.h. */ | |
4077 | ||
4078 | int | |
4079 | target_record_is_replaying (void) | |
4080 | { | |
4081 | struct target_ops *t; | |
4082 | ||
4083 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4084 | if (t->to_record_is_replaying != NULL) | |
1c63c994 | 4085 | return t->to_record_is_replaying (t); |
d02ed0bb MM |
4086 | |
4087 | return 0; | |
4088 | } | |
4089 | ||
4090 | /* See target.h. */ | |
4091 | ||
4092 | void | |
4093 | target_goto_record_begin (void) | |
4094 | { | |
4095 | struct target_ops *t; | |
4096 | ||
4097 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4098 | if (t->to_goto_record_begin != NULL) | |
4099 | { | |
08475817 | 4100 | t->to_goto_record_begin (t); |
d02ed0bb MM |
4101 | return; |
4102 | } | |
4103 | ||
4104 | tcomplain (); | |
4105 | } | |
4106 | ||
4107 | /* See target.h. */ | |
4108 | ||
4109 | void | |
4110 | target_goto_record_end (void) | |
4111 | { | |
4112 | struct target_ops *t; | |
4113 | ||
4114 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4115 | if (t->to_goto_record_end != NULL) | |
4116 | { | |
307a1b91 | 4117 | t->to_goto_record_end (t); |
d02ed0bb MM |
4118 | return; |
4119 | } | |
4120 | ||
4121 | tcomplain (); | |
4122 | } | |
4123 | ||
4124 | /* See target.h. */ | |
4125 | ||
4126 | void | |
4127 | target_goto_record (ULONGEST insn) | |
4128 | { | |
4129 | struct target_ops *t; | |
4130 | ||
4131 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4132 | if (t->to_goto_record != NULL) | |
4133 | { | |
606183ac | 4134 | t->to_goto_record (t, insn); |
d02ed0bb MM |
4135 | return; |
4136 | } | |
4137 | ||
4138 | tcomplain (); | |
4139 | } | |
4140 | ||
67c86d06 MM |
4141 | /* See target.h. */ |
4142 | ||
4143 | void | |
4144 | target_insn_history (int size, int flags) | |
4145 | { | |
4146 | struct target_ops *t; | |
4147 | ||
4148 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4149 | if (t->to_insn_history != NULL) | |
4150 | { | |
7a6c5609 | 4151 | t->to_insn_history (t, size, flags); |
67c86d06 MM |
4152 | return; |
4153 | } | |
4154 | ||
4155 | tcomplain (); | |
4156 | } | |
4157 | ||
4158 | /* See target.h. */ | |
4159 | ||
4160 | void | |
4161 | target_insn_history_from (ULONGEST from, int size, int flags) | |
4162 | { | |
4163 | struct target_ops *t; | |
4164 | ||
4165 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4166 | if (t->to_insn_history_from != NULL) | |
4167 | { | |
9abc3ff3 | 4168 | t->to_insn_history_from (t, from, size, flags); |
67c86d06 MM |
4169 | return; |
4170 | } | |
4171 | ||
4172 | tcomplain (); | |
4173 | } | |
4174 | ||
4175 | /* See target.h. */ | |
4176 | ||
4177 | void | |
4178 | target_insn_history_range (ULONGEST begin, ULONGEST end, int flags) | |
4179 | { | |
4180 | struct target_ops *t; | |
4181 | ||
4182 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4183 | if (t->to_insn_history_range != NULL) | |
4184 | { | |
4e99c6b7 | 4185 | t->to_insn_history_range (t, begin, end, flags); |
67c86d06 MM |
4186 | return; |
4187 | } | |
4188 | ||
4189 | tcomplain (); | |
4190 | } | |
4191 | ||
15984c13 MM |
4192 | /* See target.h. */ |
4193 | ||
4194 | void | |
4195 | target_call_history (int size, int flags) | |
4196 | { | |
4197 | struct target_ops *t; | |
4198 | ||
4199 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4200 | if (t->to_call_history != NULL) | |
4201 | { | |
5df2fcba | 4202 | t->to_call_history (t, size, flags); |
15984c13 MM |
4203 | return; |
4204 | } | |
4205 | ||
4206 | tcomplain (); | |
4207 | } | |
4208 | ||
4209 | /* See target.h. */ | |
4210 | ||
4211 | void | |
4212 | target_call_history_from (ULONGEST begin, int size, int flags) | |
4213 | { | |
4214 | struct target_ops *t; | |
4215 | ||
4216 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4217 | if (t->to_call_history_from != NULL) | |
4218 | { | |
ec0aea04 | 4219 | t->to_call_history_from (t, begin, size, flags); |
15984c13 MM |
4220 | return; |
4221 | } | |
4222 | ||
4223 | tcomplain (); | |
4224 | } | |
4225 | ||
4226 | /* See target.h. */ | |
4227 | ||
4228 | void | |
4229 | target_call_history_range (ULONGEST begin, ULONGEST end, int flags) | |
4230 | { | |
4231 | struct target_ops *t; | |
4232 | ||
4233 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4234 | if (t->to_call_history_range != NULL) | |
4235 | { | |
f0d960ea | 4236 | t->to_call_history_range (t, begin, end, flags); |
15984c13 MM |
4237 | return; |
4238 | } | |
4239 | ||
4240 | tcomplain (); | |
4241 | } | |
4242 | ||
c906108c | 4243 | static void |
f32dbf8c | 4244 | debug_to_prepare_to_store (struct target_ops *self, struct regcache *regcache) |
c906108c | 4245 | { |
f32dbf8c | 4246 | debug_target.to_prepare_to_store (&debug_target, regcache); |
c906108c | 4247 | |
96baa820 | 4248 | fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n"); |
c906108c SS |
4249 | } |
4250 | ||
ea001bdc MM |
4251 | /* See target.h. */ |
4252 | ||
4253 | const struct frame_unwind * | |
4254 | target_get_unwinder (void) | |
4255 | { | |
4256 | struct target_ops *t; | |
4257 | ||
4258 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4259 | if (t->to_get_unwinder != NULL) | |
4260 | return t->to_get_unwinder; | |
4261 | ||
4262 | return NULL; | |
4263 | } | |
4264 | ||
4265 | /* See target.h. */ | |
4266 | ||
4267 | const struct frame_unwind * | |
4268 | target_get_tailcall_unwinder (void) | |
4269 | { | |
4270 | struct target_ops *t; | |
4271 | ||
4272 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4273 | if (t->to_get_tailcall_unwinder != NULL) | |
4274 | return t->to_get_tailcall_unwinder; | |
4275 | ||
4276 | return NULL; | |
4277 | } | |
4278 | ||
118e6252 MM |
4279 | /* See target.h. */ |
4280 | ||
4281 | CORE_ADDR | |
4282 | forward_target_decr_pc_after_break (struct target_ops *ops, | |
4283 | struct gdbarch *gdbarch) | |
4284 | { | |
4285 | for (; ops != NULL; ops = ops->beneath) | |
4286 | if (ops->to_decr_pc_after_break != NULL) | |
4287 | return ops->to_decr_pc_after_break (ops, gdbarch); | |
4288 | ||
4289 | return gdbarch_decr_pc_after_break (gdbarch); | |
4290 | } | |
4291 | ||
4292 | /* See target.h. */ | |
4293 | ||
4294 | CORE_ADDR | |
4295 | target_decr_pc_after_break (struct gdbarch *gdbarch) | |
4296 | { | |
4297 | return forward_target_decr_pc_after_break (current_target.beneath, gdbarch); | |
4298 | } | |
4299 | ||
c906108c | 4300 | static int |
961cb7b5 | 4301 | deprecated_debug_xfer_memory (CORE_ADDR memaddr, bfd_byte *myaddr, int len, |
c8e73a31 AC |
4302 | int write, struct mem_attrib *attrib, |
4303 | struct target_ops *target) | |
c906108c SS |
4304 | { |
4305 | int retval; | |
4306 | ||
c8e73a31 AC |
4307 | retval = debug_target.deprecated_xfer_memory (memaddr, myaddr, len, write, |
4308 | attrib, target); | |
c906108c | 4309 | |
96baa820 | 4310 | fprintf_unfiltered (gdb_stdlog, |
53b71562 | 4311 | "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d", |
f5656ead | 4312 | paddress (target_gdbarch (), memaddr), len, |
5af949e3 | 4313 | write ? "write" : "read", retval); |
c906108c | 4314 | |
c906108c SS |
4315 | if (retval > 0) |
4316 | { | |
4317 | int i; | |
4318 | ||
96baa820 | 4319 | fputs_unfiltered (", bytes =", gdb_stdlog); |
c906108c SS |
4320 | for (i = 0; i < retval; i++) |
4321 | { | |
53b71562 | 4322 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
333dabeb DJ |
4323 | { |
4324 | if (targetdebug < 2 && i > 0) | |
4325 | { | |
4326 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
4327 | break; | |
4328 | } | |
4329 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
4330 | } | |
2bc416ba | 4331 | |
96baa820 | 4332 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
c906108c SS |
4333 | } |
4334 | } | |
4335 | ||
96baa820 | 4336 | fputc_unfiltered ('\n', gdb_stdlog); |
c906108c SS |
4337 | |
4338 | return retval; | |
4339 | } | |
4340 | ||
4341 | static void | |
fba45db2 | 4342 | debug_to_files_info (struct target_ops *target) |
c906108c SS |
4343 | { |
4344 | debug_target.to_files_info (target); | |
4345 | ||
96baa820 | 4346 | fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n"); |
c906108c SS |
4347 | } |
4348 | ||
4349 | static int | |
3db08215 | 4350 | debug_to_insert_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, |
a6d9a66e | 4351 | struct bp_target_info *bp_tgt) |
c906108c SS |
4352 | { |
4353 | int retval; | |
4354 | ||
6b84065d | 4355 | retval = debug_target.to_insert_breakpoint (&debug_target, gdbarch, bp_tgt); |
c906108c | 4356 | |
96baa820 | 4357 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
4358 | "target_insert_breakpoint (%s, xxx) = %ld\n", |
4359 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 4360 | (unsigned long) retval); |
c906108c SS |
4361 | return retval; |
4362 | } | |
4363 | ||
4364 | static int | |
3db08215 | 4365 | debug_to_remove_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, |
a6d9a66e | 4366 | struct bp_target_info *bp_tgt) |
c906108c SS |
4367 | { |
4368 | int retval; | |
4369 | ||
6b84065d | 4370 | retval = debug_target.to_remove_breakpoint (&debug_target, gdbarch, bp_tgt); |
c906108c | 4371 | |
96baa820 | 4372 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
4373 | "target_remove_breakpoint (%s, xxx) = %ld\n", |
4374 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 4375 | (unsigned long) retval); |
c906108c SS |
4376 | return retval; |
4377 | } | |
4378 | ||
ccaa32c7 | 4379 | static int |
5461485a TT |
4380 | debug_to_can_use_hw_breakpoint (struct target_ops *self, |
4381 | int type, int cnt, int from_tty) | |
ccaa32c7 GS |
4382 | { |
4383 | int retval; | |
4384 | ||
5461485a TT |
4385 | retval = debug_target.to_can_use_hw_breakpoint (&debug_target, |
4386 | type, cnt, from_tty); | |
ccaa32c7 GS |
4387 | |
4388 | fprintf_unfiltered (gdb_stdlog, | |
4389 | "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n", | |
4390 | (unsigned long) type, | |
4391 | (unsigned long) cnt, | |
4392 | (unsigned long) from_tty, | |
4393 | (unsigned long) retval); | |
4394 | return retval; | |
4395 | } | |
4396 | ||
e0d24f8d | 4397 | static int |
31568a15 TT |
4398 | debug_to_region_ok_for_hw_watchpoint (struct target_ops *self, |
4399 | CORE_ADDR addr, int len) | |
e0d24f8d WZ |
4400 | { |
4401 | CORE_ADDR retval; | |
4402 | ||
31568a15 TT |
4403 | retval = debug_target.to_region_ok_for_hw_watchpoint (&debug_target, |
4404 | addr, len); | |
e0d24f8d WZ |
4405 | |
4406 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4407 | "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n", |
4408 | core_addr_to_string (addr), (unsigned long) len, | |
4409 | core_addr_to_string (retval)); | |
e0d24f8d WZ |
4410 | return retval; |
4411 | } | |
4412 | ||
0cf6dd15 | 4413 | static int |
c3a5ff89 TT |
4414 | debug_to_can_accel_watchpoint_condition (struct target_ops *self, |
4415 | CORE_ADDR addr, int len, int rw, | |
0cf6dd15 TJB |
4416 | struct expression *cond) |
4417 | { | |
4418 | int retval; | |
4419 | ||
c3a5ff89 TT |
4420 | retval = debug_target.to_can_accel_watchpoint_condition (&debug_target, |
4421 | addr, len, | |
3e43a32a | 4422 | rw, cond); |
0cf6dd15 TJB |
4423 | |
4424 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
4425 | "target_can_accel_watchpoint_condition " |
4426 | "(%s, %d, %d, %s) = %ld\n", | |
bd91e7ae OS |
4427 | core_addr_to_string (addr), len, rw, |
4428 | host_address_to_string (cond), (unsigned long) retval); | |
0cf6dd15 TJB |
4429 | return retval; |
4430 | } | |
4431 | ||
ccaa32c7 | 4432 | static int |
6a109b6b | 4433 | debug_to_stopped_by_watchpoint (struct target_ops *ops) |
ccaa32c7 GS |
4434 | { |
4435 | int retval; | |
4436 | ||
6a109b6b | 4437 | retval = debug_target.to_stopped_by_watchpoint (&debug_target); |
ccaa32c7 GS |
4438 | |
4439 | fprintf_unfiltered (gdb_stdlog, | |
d92524f1 | 4440 | "target_stopped_by_watchpoint () = %ld\n", |
ccaa32c7 GS |
4441 | (unsigned long) retval); |
4442 | return retval; | |
4443 | } | |
4444 | ||
4aa7a7f5 JJ |
4445 | static int |
4446 | debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr) | |
ccaa32c7 | 4447 | { |
4aa7a7f5 | 4448 | int retval; |
ccaa32c7 | 4449 | |
4aa7a7f5 | 4450 | retval = debug_target.to_stopped_data_address (target, addr); |
ccaa32c7 GS |
4451 | |
4452 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4453 | "target_stopped_data_address ([%s]) = %ld\n", |
4454 | core_addr_to_string (*addr), | |
4aa7a7f5 | 4455 | (unsigned long)retval); |
ccaa32c7 GS |
4456 | return retval; |
4457 | } | |
4458 | ||
5009afc5 AS |
4459 | static int |
4460 | debug_to_watchpoint_addr_within_range (struct target_ops *target, | |
4461 | CORE_ADDR addr, | |
4462 | CORE_ADDR start, int length) | |
4463 | { | |
4464 | int retval; | |
4465 | ||
4466 | retval = debug_target.to_watchpoint_addr_within_range (target, addr, | |
4467 | start, length); | |
4468 | ||
4469 | fprintf_filtered (gdb_stdlog, | |
bd91e7ae OS |
4470 | "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n", |
4471 | core_addr_to_string (addr), core_addr_to_string (start), | |
4472 | length, retval); | |
5009afc5 AS |
4473 | return retval; |
4474 | } | |
4475 | ||
ccaa32c7 | 4476 | static int |
23a26771 TT |
4477 | debug_to_insert_hw_breakpoint (struct target_ops *self, |
4478 | struct gdbarch *gdbarch, | |
a6d9a66e | 4479 | struct bp_target_info *bp_tgt) |
ccaa32c7 GS |
4480 | { |
4481 | int retval; | |
4482 | ||
23a26771 TT |
4483 | retval = debug_target.to_insert_hw_breakpoint (&debug_target, |
4484 | gdbarch, bp_tgt); | |
ccaa32c7 GS |
4485 | |
4486 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4487 | "target_insert_hw_breakpoint (%s, xxx) = %ld\n", |
4488 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
4489 | (unsigned long) retval); |
4490 | return retval; | |
4491 | } | |
4492 | ||
4493 | static int | |
a64dc96c TT |
4494 | debug_to_remove_hw_breakpoint (struct target_ops *self, |
4495 | struct gdbarch *gdbarch, | |
a6d9a66e | 4496 | struct bp_target_info *bp_tgt) |
ccaa32c7 GS |
4497 | { |
4498 | int retval; | |
4499 | ||
a64dc96c TT |
4500 | retval = debug_target.to_remove_hw_breakpoint (&debug_target, |
4501 | gdbarch, bp_tgt); | |
ccaa32c7 GS |
4502 | |
4503 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4504 | "target_remove_hw_breakpoint (%s, xxx) = %ld\n", |
4505 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
4506 | (unsigned long) retval); |
4507 | return retval; | |
4508 | } | |
4509 | ||
4510 | static int | |
7bb99c53 TT |
4511 | debug_to_insert_watchpoint (struct target_ops *self, |
4512 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 4513 | struct expression *cond) |
ccaa32c7 GS |
4514 | { |
4515 | int retval; | |
4516 | ||
7bb99c53 TT |
4517 | retval = debug_target.to_insert_watchpoint (&debug_target, |
4518 | addr, len, type, cond); | |
ccaa32c7 GS |
4519 | |
4520 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4521 | "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n", |
4522 | core_addr_to_string (addr), len, type, | |
4523 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
4524 | return retval; |
4525 | } | |
4526 | ||
4527 | static int | |
11b5219a TT |
4528 | debug_to_remove_watchpoint (struct target_ops *self, |
4529 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 4530 | struct expression *cond) |
ccaa32c7 GS |
4531 | { |
4532 | int retval; | |
4533 | ||
11b5219a TT |
4534 | retval = debug_target.to_remove_watchpoint (&debug_target, |
4535 | addr, len, type, cond); | |
ccaa32c7 GS |
4536 | |
4537 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4538 | "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n", |
4539 | core_addr_to_string (addr), len, type, | |
4540 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
4541 | return retval; |
4542 | } | |
4543 | ||
c906108c | 4544 | static void |
c42bf286 | 4545 | debug_to_terminal_init (struct target_ops *self) |
c906108c | 4546 | { |
c42bf286 | 4547 | debug_target.to_terminal_init (&debug_target); |
c906108c | 4548 | |
96baa820 | 4549 | fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n"); |
c906108c SS |
4550 | } |
4551 | ||
4552 | static void | |
d2f640d4 | 4553 | debug_to_terminal_inferior (struct target_ops *self) |
c906108c | 4554 | { |
d2f640d4 | 4555 | debug_target.to_terminal_inferior (&debug_target); |
c906108c | 4556 | |
96baa820 | 4557 | fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n"); |
c906108c SS |
4558 | } |
4559 | ||
4560 | static void | |
2e1e1a19 | 4561 | debug_to_terminal_ours_for_output (struct target_ops *self) |
c906108c | 4562 | { |
2e1e1a19 | 4563 | debug_target.to_terminal_ours_for_output (&debug_target); |
c906108c | 4564 | |
96baa820 | 4565 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n"); |
c906108c SS |
4566 | } |
4567 | ||
4568 | static void | |
e3594fd1 | 4569 | debug_to_terminal_ours (struct target_ops *self) |
c906108c | 4570 | { |
e3594fd1 | 4571 | debug_target.to_terminal_ours (&debug_target); |
c906108c | 4572 | |
96baa820 | 4573 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n"); |
c906108c SS |
4574 | } |
4575 | ||
a790ad35 | 4576 | static void |
ae3bd431 | 4577 | debug_to_terminal_save_ours (struct target_ops *self) |
a790ad35 | 4578 | { |
ae3bd431 | 4579 | debug_target.to_terminal_save_ours (&debug_target); |
a790ad35 SC |
4580 | |
4581 | fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n"); | |
4582 | } | |
4583 | ||
c906108c | 4584 | static void |
0a4f40a2 TT |
4585 | debug_to_terminal_info (struct target_ops *self, |
4586 | const char *arg, int from_tty) | |
c906108c | 4587 | { |
0a4f40a2 | 4588 | debug_target.to_terminal_info (&debug_target, arg, from_tty); |
c906108c | 4589 | |
96baa820 | 4590 | fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg, |
c906108c SS |
4591 | from_tty); |
4592 | } | |
4593 | ||
c906108c | 4594 | static void |
71a9f134 | 4595 | debug_to_load (struct target_ops *self, char *args, int from_tty) |
c906108c | 4596 | { |
71a9f134 | 4597 | debug_target.to_load (&debug_target, args, from_tty); |
c906108c | 4598 | |
96baa820 | 4599 | fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty); |
c906108c SS |
4600 | } |
4601 | ||
c906108c | 4602 | static void |
2e97a79e | 4603 | debug_to_post_startup_inferior (struct target_ops *self, ptid_t ptid) |
c906108c | 4604 | { |
2e97a79e | 4605 | debug_target.to_post_startup_inferior (&debug_target, ptid); |
c906108c | 4606 | |
96baa820 | 4607 | fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n", |
dfd4cc63 | 4608 | ptid_get_pid (ptid)); |
c906108c SS |
4609 | } |
4610 | ||
77b06cd7 | 4611 | static int |
a863b201 | 4612 | debug_to_insert_fork_catchpoint (struct target_ops *self, int pid) |
c906108c | 4613 | { |
77b06cd7 TJB |
4614 | int retval; |
4615 | ||
a863b201 | 4616 | retval = debug_target.to_insert_fork_catchpoint (&debug_target, pid); |
77b06cd7 TJB |
4617 | |
4618 | fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d) = %d\n", | |
4619 | pid, retval); | |
c906108c | 4620 | |
77b06cd7 | 4621 | return retval; |
c906108c SS |
4622 | } |
4623 | ||
4624 | static int | |
973fc227 | 4625 | debug_to_remove_fork_catchpoint (struct target_ops *self, int pid) |
c906108c | 4626 | { |
c5aa993b | 4627 | int retval; |
c906108c | 4628 | |
973fc227 | 4629 | retval = debug_target.to_remove_fork_catchpoint (&debug_target, pid); |
c906108c | 4630 | |
96baa820 | 4631 | fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n", |
c5aa993b | 4632 | pid, retval); |
c906108c SS |
4633 | |
4634 | return retval; | |
4635 | } | |
4636 | ||
77b06cd7 | 4637 | static int |
3ecc7da0 | 4638 | debug_to_insert_vfork_catchpoint (struct target_ops *self, int pid) |
c906108c | 4639 | { |
77b06cd7 TJB |
4640 | int retval; |
4641 | ||
3ecc7da0 | 4642 | retval = debug_target.to_insert_vfork_catchpoint (&debug_target, pid); |
c906108c | 4643 | |
77b06cd7 TJB |
4644 | fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d) = %d\n", |
4645 | pid, retval); | |
4646 | ||
4647 | return retval; | |
c906108c SS |
4648 | } |
4649 | ||
4650 | static int | |
e98cf0cd | 4651 | debug_to_remove_vfork_catchpoint (struct target_ops *self, int pid) |
c906108c | 4652 | { |
c5aa993b | 4653 | int retval; |
c906108c | 4654 | |
e98cf0cd | 4655 | retval = debug_target.to_remove_vfork_catchpoint (&debug_target, pid); |
c906108c | 4656 | |
96baa820 | 4657 | fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n", |
c5aa993b | 4658 | pid, retval); |
c906108c SS |
4659 | |
4660 | return retval; | |
4661 | } | |
4662 | ||
77b06cd7 | 4663 | static int |
ba025e51 | 4664 | debug_to_insert_exec_catchpoint (struct target_ops *self, int pid) |
c906108c | 4665 | { |
77b06cd7 TJB |
4666 | int retval; |
4667 | ||
ba025e51 | 4668 | retval = debug_target.to_insert_exec_catchpoint (&debug_target, pid); |
c906108c | 4669 | |
77b06cd7 TJB |
4670 | fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d) = %d\n", |
4671 | pid, retval); | |
4672 | ||
4673 | return retval; | |
c906108c SS |
4674 | } |
4675 | ||
4676 | static int | |
758e29d2 | 4677 | debug_to_remove_exec_catchpoint (struct target_ops *self, int pid) |
c906108c | 4678 | { |
c5aa993b | 4679 | int retval; |
c906108c | 4680 | |
758e29d2 | 4681 | retval = debug_target.to_remove_exec_catchpoint (&debug_target, pid); |
c906108c | 4682 | |
96baa820 | 4683 | fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n", |
c5aa993b | 4684 | pid, retval); |
c906108c SS |
4685 | |
4686 | return retval; | |
4687 | } | |
4688 | ||
c906108c | 4689 | static int |
d796e1d6 TT |
4690 | debug_to_has_exited (struct target_ops *self, |
4691 | int pid, int wait_status, int *exit_status) | |
c906108c | 4692 | { |
c5aa993b | 4693 | int has_exited; |
c906108c | 4694 | |
d796e1d6 TT |
4695 | has_exited = debug_target.to_has_exited (&debug_target, |
4696 | pid, wait_status, exit_status); | |
c906108c | 4697 | |
96baa820 | 4698 | fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n", |
c5aa993b | 4699 | pid, wait_status, *exit_status, has_exited); |
c906108c SS |
4700 | |
4701 | return has_exited; | |
4702 | } | |
4703 | ||
c906108c | 4704 | static int |
da82bd6b | 4705 | debug_to_can_run (struct target_ops *self) |
c906108c SS |
4706 | { |
4707 | int retval; | |
4708 | ||
da82bd6b | 4709 | retval = debug_target.to_can_run (&debug_target); |
c906108c | 4710 | |
96baa820 | 4711 | fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval); |
c906108c SS |
4712 | |
4713 | return retval; | |
4714 | } | |
4715 | ||
c2250ad1 UW |
4716 | static struct gdbarch * |
4717 | debug_to_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
4718 | { | |
4719 | struct gdbarch *retval; | |
4720 | ||
4721 | retval = debug_target.to_thread_architecture (ops, ptid); | |
4722 | ||
3e43a32a MS |
4723 | fprintf_unfiltered (gdb_stdlog, |
4724 | "target_thread_architecture (%s) = %s [%s]\n", | |
4725 | target_pid_to_str (ptid), | |
4726 | host_address_to_string (retval), | |
c2250ad1 UW |
4727 | gdbarch_bfd_arch_info (retval)->printable_name); |
4728 | return retval; | |
4729 | } | |
4730 | ||
c906108c | 4731 | static void |
1eab8a48 | 4732 | debug_to_stop (struct target_ops *self, ptid_t ptid) |
c906108c | 4733 | { |
1eab8a48 | 4734 | debug_target.to_stop (&debug_target, ptid); |
c906108c | 4735 | |
94cc34af PA |
4736 | fprintf_unfiltered (gdb_stdlog, "target_stop (%s)\n", |
4737 | target_pid_to_str (ptid)); | |
c906108c SS |
4738 | } |
4739 | ||
96baa820 | 4740 | static void |
1aac633b | 4741 | debug_to_rcmd (struct target_ops *self, char *command, |
d9fcf2fb | 4742 | struct ui_file *outbuf) |
96baa820 | 4743 | { |
1aac633b | 4744 | debug_target.to_rcmd (&debug_target, command, outbuf); |
96baa820 JM |
4745 | fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command); |
4746 | } | |
4747 | ||
c906108c | 4748 | static char * |
8dd27370 | 4749 | debug_to_pid_to_exec_file (struct target_ops *self, int pid) |
c906108c | 4750 | { |
c5aa993b | 4751 | char *exec_file; |
c906108c | 4752 | |
8dd27370 | 4753 | exec_file = debug_target.to_pid_to_exec_file (&debug_target, pid); |
c906108c | 4754 | |
96baa820 | 4755 | fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n", |
c5aa993b | 4756 | pid, exec_file); |
c906108c SS |
4757 | |
4758 | return exec_file; | |
4759 | } | |
4760 | ||
c906108c | 4761 | static void |
fba45db2 | 4762 | setup_target_debug (void) |
c906108c SS |
4763 | { |
4764 | memcpy (&debug_target, ¤t_target, sizeof debug_target); | |
4765 | ||
4766 | current_target.to_open = debug_to_open; | |
c906108c | 4767 | current_target.to_post_attach = debug_to_post_attach; |
c906108c | 4768 | current_target.to_prepare_to_store = debug_to_prepare_to_store; |
c8e73a31 | 4769 | current_target.deprecated_xfer_memory = deprecated_debug_xfer_memory; |
c906108c SS |
4770 | current_target.to_files_info = debug_to_files_info; |
4771 | current_target.to_insert_breakpoint = debug_to_insert_breakpoint; | |
4772 | current_target.to_remove_breakpoint = debug_to_remove_breakpoint; | |
ccaa32c7 GS |
4773 | current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint; |
4774 | current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint; | |
4775 | current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint; | |
4776 | current_target.to_insert_watchpoint = debug_to_insert_watchpoint; | |
4777 | current_target.to_remove_watchpoint = debug_to_remove_watchpoint; | |
4778 | current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint; | |
4779 | current_target.to_stopped_data_address = debug_to_stopped_data_address; | |
3e43a32a MS |
4780 | current_target.to_watchpoint_addr_within_range |
4781 | = debug_to_watchpoint_addr_within_range; | |
4782 | current_target.to_region_ok_for_hw_watchpoint | |
4783 | = debug_to_region_ok_for_hw_watchpoint; | |
4784 | current_target.to_can_accel_watchpoint_condition | |
4785 | = debug_to_can_accel_watchpoint_condition; | |
c906108c SS |
4786 | current_target.to_terminal_init = debug_to_terminal_init; |
4787 | current_target.to_terminal_inferior = debug_to_terminal_inferior; | |
3e43a32a MS |
4788 | current_target.to_terminal_ours_for_output |
4789 | = debug_to_terminal_ours_for_output; | |
c906108c | 4790 | current_target.to_terminal_ours = debug_to_terminal_ours; |
a790ad35 | 4791 | current_target.to_terminal_save_ours = debug_to_terminal_save_ours; |
c906108c | 4792 | current_target.to_terminal_info = debug_to_terminal_info; |
c906108c | 4793 | current_target.to_load = debug_to_load; |
c906108c | 4794 | current_target.to_post_startup_inferior = debug_to_post_startup_inferior; |
c906108c SS |
4795 | current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint; |
4796 | current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint; | |
4797 | current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint; | |
4798 | current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint; | |
c906108c SS |
4799 | current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint; |
4800 | current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint; | |
c906108c | 4801 | current_target.to_has_exited = debug_to_has_exited; |
c906108c | 4802 | current_target.to_can_run = debug_to_can_run; |
c906108c | 4803 | current_target.to_stop = debug_to_stop; |
96baa820 | 4804 | current_target.to_rcmd = debug_to_rcmd; |
c906108c | 4805 | current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file; |
c2250ad1 | 4806 | current_target.to_thread_architecture = debug_to_thread_architecture; |
c906108c | 4807 | } |
c906108c | 4808 | \f |
c5aa993b JM |
4809 | |
4810 | static char targ_desc[] = | |
3e43a32a MS |
4811 | "Names of targets and files being debugged.\nShows the entire \ |
4812 | stack of targets currently in use (including the exec-file,\n\ | |
c906108c SS |
4813 | core-file, and process, if any), as well as the symbol file name."; |
4814 | ||
a53f3625 TT |
4815 | static void |
4816 | default_rcmd (struct target_ops *self, char *command, struct ui_file *output) | |
4817 | { | |
4818 | error (_("\"monitor\" command not supported by this target.")); | |
4819 | } | |
4820 | ||
96baa820 JM |
4821 | static void |
4822 | do_monitor_command (char *cmd, | |
4823 | int from_tty) | |
4824 | { | |
96baa820 JM |
4825 | target_rcmd (cmd, gdb_stdtarg); |
4826 | } | |
4827 | ||
87680a14 JB |
4828 | /* Print the name of each layers of our target stack. */ |
4829 | ||
4830 | static void | |
4831 | maintenance_print_target_stack (char *cmd, int from_tty) | |
4832 | { | |
4833 | struct target_ops *t; | |
4834 | ||
4835 | printf_filtered (_("The current target stack is:\n")); | |
4836 | ||
4837 | for (t = target_stack; t != NULL; t = t->beneath) | |
4838 | { | |
4839 | printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname); | |
4840 | } | |
4841 | } | |
4842 | ||
c6ebd6cf VP |
4843 | /* Controls if async mode is permitted. */ |
4844 | int target_async_permitted = 0; | |
4845 | ||
4846 | /* The set command writes to this variable. If the inferior is | |
b5419e49 | 4847 | executing, target_async_permitted is *not* updated. */ |
c6ebd6cf VP |
4848 | static int target_async_permitted_1 = 0; |
4849 | ||
4850 | static void | |
9401a810 PA |
4851 | set_target_async_command (char *args, int from_tty, |
4852 | struct cmd_list_element *c) | |
c6ebd6cf | 4853 | { |
c35b1492 | 4854 | if (have_live_inferiors ()) |
c6ebd6cf VP |
4855 | { |
4856 | target_async_permitted_1 = target_async_permitted; | |
4857 | error (_("Cannot change this setting while the inferior is running.")); | |
4858 | } | |
4859 | ||
4860 | target_async_permitted = target_async_permitted_1; | |
4861 | } | |
4862 | ||
4863 | static void | |
9401a810 PA |
4864 | show_target_async_command (struct ui_file *file, int from_tty, |
4865 | struct cmd_list_element *c, | |
4866 | const char *value) | |
c6ebd6cf | 4867 | { |
3e43a32a MS |
4868 | fprintf_filtered (file, |
4869 | _("Controlling the inferior in " | |
4870 | "asynchronous mode is %s.\n"), value); | |
c6ebd6cf VP |
4871 | } |
4872 | ||
d914c394 SS |
4873 | /* Temporary copies of permission settings. */ |
4874 | ||
4875 | static int may_write_registers_1 = 1; | |
4876 | static int may_write_memory_1 = 1; | |
4877 | static int may_insert_breakpoints_1 = 1; | |
4878 | static int may_insert_tracepoints_1 = 1; | |
4879 | static int may_insert_fast_tracepoints_1 = 1; | |
4880 | static int may_stop_1 = 1; | |
4881 | ||
4882 | /* Make the user-set values match the real values again. */ | |
4883 | ||
4884 | void | |
4885 | update_target_permissions (void) | |
4886 | { | |
4887 | may_write_registers_1 = may_write_registers; | |
4888 | may_write_memory_1 = may_write_memory; | |
4889 | may_insert_breakpoints_1 = may_insert_breakpoints; | |
4890 | may_insert_tracepoints_1 = may_insert_tracepoints; | |
4891 | may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints; | |
4892 | may_stop_1 = may_stop; | |
4893 | } | |
4894 | ||
4895 | /* The one function handles (most of) the permission flags in the same | |
4896 | way. */ | |
4897 | ||
4898 | static void | |
4899 | set_target_permissions (char *args, int from_tty, | |
4900 | struct cmd_list_element *c) | |
4901 | { | |
4902 | if (target_has_execution) | |
4903 | { | |
4904 | update_target_permissions (); | |
4905 | error (_("Cannot change this setting while the inferior is running.")); | |
4906 | } | |
4907 | ||
4908 | /* Make the real values match the user-changed values. */ | |
4909 | may_write_registers = may_write_registers_1; | |
4910 | may_insert_breakpoints = may_insert_breakpoints_1; | |
4911 | may_insert_tracepoints = may_insert_tracepoints_1; | |
4912 | may_insert_fast_tracepoints = may_insert_fast_tracepoints_1; | |
4913 | may_stop = may_stop_1; | |
4914 | update_observer_mode (); | |
4915 | } | |
4916 | ||
4917 | /* Set memory write permission independently of observer mode. */ | |
4918 | ||
4919 | static void | |
4920 | set_write_memory_permission (char *args, int from_tty, | |
4921 | struct cmd_list_element *c) | |
4922 | { | |
4923 | /* Make the real values match the user-changed values. */ | |
4924 | may_write_memory = may_write_memory_1; | |
4925 | update_observer_mode (); | |
4926 | } | |
4927 | ||
4928 | ||
c906108c | 4929 | void |
fba45db2 | 4930 | initialize_targets (void) |
c906108c SS |
4931 | { |
4932 | init_dummy_target (); | |
4933 | push_target (&dummy_target); | |
4934 | ||
4935 | add_info ("target", target_info, targ_desc); | |
4936 | add_info ("files", target_info, targ_desc); | |
4937 | ||
ccce17b0 | 4938 | add_setshow_zuinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
85c07804 AC |
4939 | Set target debugging."), _("\ |
4940 | Show target debugging."), _("\ | |
333dabeb DJ |
4941 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
4942 | verbose. Changes do not take effect until the next \"run\" or \"target\"\n\ | |
85c07804 | 4943 | command."), |
ccce17b0 YQ |
4944 | NULL, |
4945 | show_targetdebug, | |
4946 | &setdebuglist, &showdebuglist); | |
3a11626d | 4947 | |
2bc416ba | 4948 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
4949 | &trust_readonly, _("\ |
4950 | Set mode for reading from readonly sections."), _("\ | |
4951 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
4952 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
4953 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 4954 | result in significant performance improvement for remote targets."), |
2c5b56ce | 4955 | NULL, |
920d2a44 | 4956 | show_trust_readonly, |
e707bbc2 | 4957 | &setlist, &showlist); |
96baa820 JM |
4958 | |
4959 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 4960 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 4961 | |
87680a14 JB |
4962 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
4963 | _("Print the name of each layer of the internal target stack."), | |
4964 | &maintenanceprintlist); | |
4965 | ||
c6ebd6cf VP |
4966 | add_setshow_boolean_cmd ("target-async", no_class, |
4967 | &target_async_permitted_1, _("\ | |
4968 | Set whether gdb controls the inferior in asynchronous mode."), _("\ | |
4969 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
4970 | Tells gdb whether to control the inferior in asynchronous mode."), | |
9401a810 PA |
4971 | set_target_async_command, |
4972 | show_target_async_command, | |
c6ebd6cf VP |
4973 | &setlist, |
4974 | &showlist); | |
4975 | ||
d914c394 SS |
4976 | add_setshow_boolean_cmd ("may-write-registers", class_support, |
4977 | &may_write_registers_1, _("\ | |
4978 | Set permission to write into registers."), _("\ | |
4979 | Show permission to write into registers."), _("\ | |
4980 | When this permission is on, GDB may write into the target's registers.\n\ | |
4981 | Otherwise, any sort of write attempt will result in an error."), | |
4982 | set_target_permissions, NULL, | |
4983 | &setlist, &showlist); | |
4984 | ||
4985 | add_setshow_boolean_cmd ("may-write-memory", class_support, | |
4986 | &may_write_memory_1, _("\ | |
4987 | Set permission to write into target memory."), _("\ | |
4988 | Show permission to write into target memory."), _("\ | |
4989 | When this permission is on, GDB may write into the target's memory.\n\ | |
4990 | Otherwise, any sort of write attempt will result in an error."), | |
4991 | set_write_memory_permission, NULL, | |
4992 | &setlist, &showlist); | |
4993 | ||
4994 | add_setshow_boolean_cmd ("may-insert-breakpoints", class_support, | |
4995 | &may_insert_breakpoints_1, _("\ | |
4996 | Set permission to insert breakpoints in the target."), _("\ | |
4997 | Show permission to insert breakpoints in the target."), _("\ | |
4998 | When this permission is on, GDB may insert breakpoints in the program.\n\ | |
4999 | Otherwise, any sort of insertion attempt will result in an error."), | |
5000 | set_target_permissions, NULL, | |
5001 | &setlist, &showlist); | |
5002 | ||
5003 | add_setshow_boolean_cmd ("may-insert-tracepoints", class_support, | |
5004 | &may_insert_tracepoints_1, _("\ | |
5005 | Set permission to insert tracepoints in the target."), _("\ | |
5006 | Show permission to insert tracepoints in the target."), _("\ | |
5007 | When this permission is on, GDB may insert tracepoints in the program.\n\ | |
5008 | Otherwise, any sort of insertion attempt will result in an error."), | |
5009 | set_target_permissions, NULL, | |
5010 | &setlist, &showlist); | |
5011 | ||
5012 | add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support, | |
5013 | &may_insert_fast_tracepoints_1, _("\ | |
5014 | Set permission to insert fast tracepoints in the target."), _("\ | |
5015 | Show permission to insert fast tracepoints in the target."), _("\ | |
5016 | When this permission is on, GDB may insert fast tracepoints.\n\ | |
5017 | Otherwise, any sort of insertion attempt will result in an error."), | |
5018 | set_target_permissions, NULL, | |
5019 | &setlist, &showlist); | |
5020 | ||
5021 | add_setshow_boolean_cmd ("may-interrupt", class_support, | |
5022 | &may_stop_1, _("\ | |
5023 | Set permission to interrupt or signal the target."), _("\ | |
5024 | Show permission to interrupt or signal the target."), _("\ | |
5025 | When this permission is on, GDB may interrupt/stop the target's execution.\n\ | |
5026 | Otherwise, any attempt to interrupt or stop will be ignored."), | |
5027 | set_target_permissions, NULL, | |
5028 | &setlist, &showlist); | |
c906108c | 5029 | } |