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 | |
1b67eb02 AS |
69 | static void *return_null (void); |
70 | ||
a14ed312 | 71 | void target_ignore (void); |
c906108c | 72 | |
a14ed312 | 73 | static void target_command (char *, int); |
c906108c | 74 | |
a14ed312 | 75 | static struct target_ops *find_default_run_target (char *); |
c906108c | 76 | |
4ac248ca YQ |
77 | static target_xfer_partial_ftype default_xfer_partial; |
78 | ||
c2250ad1 UW |
79 | static struct gdbarch *default_thread_architecture (struct target_ops *ops, |
80 | ptid_t ptid); | |
81 | ||
0b5a2719 TT |
82 | static int dummy_find_memory_regions (struct target_ops *self, |
83 | find_memory_region_ftype ignore1, | |
84 | void *ignore2); | |
85 | ||
16f796b1 TT |
86 | static char *dummy_make_corefile_notes (struct target_ops *self, |
87 | bfd *ignore1, int *ignore2); | |
88 | ||
6b84065d TT |
89 | static int find_default_can_async_p (struct target_ops *ignore); |
90 | ||
91 | static int find_default_is_async_p (struct target_ops *ignore); | |
92 | ||
fe31bf5b TT |
93 | static enum exec_direction_kind default_execution_direction |
94 | (struct target_ops *self); | |
95 | ||
1101cb7b TT |
96 | #include "target-delegates.c" |
97 | ||
a14ed312 | 98 | static void init_dummy_target (void); |
c906108c | 99 | |
aa869812 AC |
100 | static struct target_ops debug_target; |
101 | ||
a14ed312 | 102 | static void debug_to_open (char *, int); |
c906108c | 103 | |
f32dbf8c MM |
104 | static void debug_to_prepare_to_store (struct target_ops *self, |
105 | struct regcache *); | |
c906108c | 106 | |
a14ed312 | 107 | static void debug_to_files_info (struct target_ops *); |
c906108c | 108 | |
3db08215 | 109 | static int debug_to_insert_breakpoint (struct target_ops *, struct gdbarch *, |
a6d9a66e | 110 | struct bp_target_info *); |
c906108c | 111 | |
3db08215 | 112 | static int debug_to_remove_breakpoint (struct target_ops *, struct gdbarch *, |
a6d9a66e | 113 | struct bp_target_info *); |
c906108c | 114 | |
5461485a TT |
115 | static int debug_to_can_use_hw_breakpoint (struct target_ops *self, |
116 | int, int, int); | |
ccaa32c7 | 117 | |
23a26771 TT |
118 | static int debug_to_insert_hw_breakpoint (struct target_ops *self, |
119 | struct gdbarch *, | |
a6d9a66e | 120 | struct bp_target_info *); |
ccaa32c7 | 121 | |
a64dc96c TT |
122 | static int debug_to_remove_hw_breakpoint (struct target_ops *self, |
123 | struct gdbarch *, | |
a6d9a66e | 124 | struct bp_target_info *); |
ccaa32c7 | 125 | |
7bb99c53 TT |
126 | static int debug_to_insert_watchpoint (struct target_ops *self, |
127 | CORE_ADDR, int, int, | |
0cf6dd15 | 128 | struct expression *); |
ccaa32c7 | 129 | |
11b5219a TT |
130 | static int debug_to_remove_watchpoint (struct target_ops *self, |
131 | CORE_ADDR, int, int, | |
0cf6dd15 | 132 | struct expression *); |
ccaa32c7 | 133 | |
4aa7a7f5 | 134 | static int debug_to_stopped_data_address (struct target_ops *, CORE_ADDR *); |
ccaa32c7 | 135 | |
5009afc5 AS |
136 | static int debug_to_watchpoint_addr_within_range (struct target_ops *, |
137 | CORE_ADDR, CORE_ADDR, int); | |
138 | ||
31568a15 TT |
139 | static int debug_to_region_ok_for_hw_watchpoint (struct target_ops *self, |
140 | CORE_ADDR, int); | |
e0d24f8d | 141 | |
c3a5ff89 TT |
142 | static int debug_to_can_accel_watchpoint_condition (struct target_ops *self, |
143 | CORE_ADDR, int, int, | |
0cf6dd15 TJB |
144 | struct expression *); |
145 | ||
c42bf286 | 146 | static void debug_to_terminal_init (struct target_ops *self); |
c906108c | 147 | |
d2f640d4 | 148 | static void debug_to_terminal_inferior (struct target_ops *self); |
c906108c | 149 | |
2e1e1a19 | 150 | static void debug_to_terminal_ours_for_output (struct target_ops *self); |
c906108c | 151 | |
ae3bd431 | 152 | static void debug_to_terminal_save_ours (struct target_ops *self); |
a790ad35 | 153 | |
e3594fd1 | 154 | static void debug_to_terminal_ours (struct target_ops *self); |
c906108c | 155 | |
71a9f134 | 156 | static void debug_to_load (struct target_ops *self, char *, int); |
c906108c | 157 | |
da82bd6b | 158 | static int debug_to_can_run (struct target_ops *self); |
c906108c | 159 | |
1eab8a48 | 160 | static void debug_to_stop (struct target_ops *self, ptid_t); |
c906108c | 161 | |
c906108c | 162 | /* Pointer to array of target architecture structures; the size of the |
2bc416ba | 163 | array; the current index into the array; the allocated size of the |
c906108c SS |
164 | array. */ |
165 | struct target_ops **target_structs; | |
166 | unsigned target_struct_size; | |
c906108c SS |
167 | unsigned target_struct_allocsize; |
168 | #define DEFAULT_ALLOCSIZE 10 | |
169 | ||
170 | /* The initial current target, so that there is always a semi-valid | |
171 | current target. */ | |
172 | ||
173 | static struct target_ops dummy_target; | |
174 | ||
175 | /* Top of target stack. */ | |
176 | ||
258b763a | 177 | static struct target_ops *target_stack; |
c906108c SS |
178 | |
179 | /* The target structure we are currently using to talk to a process | |
180 | or file or whatever "inferior" we have. */ | |
181 | ||
182 | struct target_ops current_target; | |
183 | ||
184 | /* Command list for target. */ | |
185 | ||
186 | static struct cmd_list_element *targetlist = NULL; | |
187 | ||
cf7a04e8 DJ |
188 | /* Nonzero if we should trust readonly sections from the |
189 | executable when reading memory. */ | |
190 | ||
191 | static int trust_readonly = 0; | |
192 | ||
8defab1a DJ |
193 | /* Nonzero if we should show true memory content including |
194 | memory breakpoint inserted by gdb. */ | |
195 | ||
196 | static int show_memory_breakpoints = 0; | |
197 | ||
d914c394 SS |
198 | /* These globals control whether GDB attempts to perform these |
199 | operations; they are useful for targets that need to prevent | |
200 | inadvertant disruption, such as in non-stop mode. */ | |
201 | ||
202 | int may_write_registers = 1; | |
203 | ||
204 | int may_write_memory = 1; | |
205 | ||
206 | int may_insert_breakpoints = 1; | |
207 | ||
208 | int may_insert_tracepoints = 1; | |
209 | ||
210 | int may_insert_fast_tracepoints = 1; | |
211 | ||
212 | int may_stop = 1; | |
213 | ||
c906108c SS |
214 | /* Non-zero if we want to see trace of target level stuff. */ |
215 | ||
ccce17b0 | 216 | static unsigned int targetdebug = 0; |
920d2a44 AC |
217 | static void |
218 | show_targetdebug (struct ui_file *file, int from_tty, | |
219 | struct cmd_list_element *c, const char *value) | |
220 | { | |
221 | fprintf_filtered (file, _("Target debugging is %s.\n"), value); | |
222 | } | |
c906108c | 223 | |
a14ed312 | 224 | static void setup_target_debug (void); |
c906108c | 225 | |
c906108c SS |
226 | /* The user just typed 'target' without the name of a target. */ |
227 | ||
c906108c | 228 | static void |
fba45db2 | 229 | target_command (char *arg, int from_tty) |
c906108c SS |
230 | { |
231 | fputs_filtered ("Argument required (target name). Try `help target'\n", | |
232 | gdb_stdout); | |
233 | } | |
234 | ||
c35b1492 PA |
235 | /* Default target_has_* methods for process_stratum targets. */ |
236 | ||
237 | int | |
238 | default_child_has_all_memory (struct target_ops *ops) | |
239 | { | |
240 | /* If no inferior selected, then we can't read memory here. */ | |
241 | if (ptid_equal (inferior_ptid, null_ptid)) | |
242 | return 0; | |
243 | ||
244 | return 1; | |
245 | } | |
246 | ||
247 | int | |
248 | default_child_has_memory (struct target_ops *ops) | |
249 | { | |
250 | /* If no inferior selected, then we can't read memory here. */ | |
251 | if (ptid_equal (inferior_ptid, null_ptid)) | |
252 | return 0; | |
253 | ||
254 | return 1; | |
255 | } | |
256 | ||
257 | int | |
258 | default_child_has_stack (struct target_ops *ops) | |
259 | { | |
260 | /* If no inferior selected, there's no stack. */ | |
261 | if (ptid_equal (inferior_ptid, null_ptid)) | |
262 | return 0; | |
263 | ||
264 | return 1; | |
265 | } | |
266 | ||
267 | int | |
268 | default_child_has_registers (struct target_ops *ops) | |
269 | { | |
270 | /* Can't read registers from no inferior. */ | |
271 | if (ptid_equal (inferior_ptid, null_ptid)) | |
272 | return 0; | |
273 | ||
274 | return 1; | |
275 | } | |
276 | ||
277 | int | |
aeaec162 | 278 | default_child_has_execution (struct target_ops *ops, ptid_t the_ptid) |
c35b1492 PA |
279 | { |
280 | /* If there's no thread selected, then we can't make it run through | |
281 | hoops. */ | |
aeaec162 | 282 | if (ptid_equal (the_ptid, null_ptid)) |
c35b1492 PA |
283 | return 0; |
284 | ||
285 | return 1; | |
286 | } | |
287 | ||
288 | ||
289 | int | |
290 | target_has_all_memory_1 (void) | |
291 | { | |
292 | struct target_ops *t; | |
293 | ||
294 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
295 | if (t->to_has_all_memory (t)) | |
296 | return 1; | |
297 | ||
298 | return 0; | |
299 | } | |
300 | ||
301 | int | |
302 | target_has_memory_1 (void) | |
303 | { | |
304 | struct target_ops *t; | |
305 | ||
306 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
307 | if (t->to_has_memory (t)) | |
308 | return 1; | |
309 | ||
310 | return 0; | |
311 | } | |
312 | ||
313 | int | |
314 | target_has_stack_1 (void) | |
315 | { | |
316 | struct target_ops *t; | |
317 | ||
318 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
319 | if (t->to_has_stack (t)) | |
320 | return 1; | |
321 | ||
322 | return 0; | |
323 | } | |
324 | ||
325 | int | |
326 | target_has_registers_1 (void) | |
327 | { | |
328 | struct target_ops *t; | |
329 | ||
330 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
331 | if (t->to_has_registers (t)) | |
332 | return 1; | |
333 | ||
334 | return 0; | |
335 | } | |
336 | ||
337 | int | |
aeaec162 | 338 | target_has_execution_1 (ptid_t the_ptid) |
c35b1492 PA |
339 | { |
340 | struct target_ops *t; | |
341 | ||
342 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
aeaec162 | 343 | if (t->to_has_execution (t, the_ptid)) |
c35b1492 PA |
344 | return 1; |
345 | ||
346 | return 0; | |
347 | } | |
348 | ||
aeaec162 TT |
349 | int |
350 | target_has_execution_current (void) | |
351 | { | |
352 | return target_has_execution_1 (inferior_ptid); | |
353 | } | |
354 | ||
c22a2b88 TT |
355 | /* Complete initialization of T. This ensures that various fields in |
356 | T are set, if needed by the target implementation. */ | |
c906108c SS |
357 | |
358 | void | |
c22a2b88 | 359 | complete_target_initialization (struct target_ops *t) |
c906108c | 360 | { |
0088c768 | 361 | /* Provide default values for all "must have" methods. */ |
0b603eba AC |
362 | if (t->to_xfer_partial == NULL) |
363 | t->to_xfer_partial = default_xfer_partial; | |
0088c768 | 364 | |
c35b1492 PA |
365 | if (t->to_has_all_memory == NULL) |
366 | t->to_has_all_memory = (int (*) (struct target_ops *)) return_zero; | |
367 | ||
368 | if (t->to_has_memory == NULL) | |
369 | t->to_has_memory = (int (*) (struct target_ops *)) return_zero; | |
370 | ||
371 | if (t->to_has_stack == NULL) | |
372 | t->to_has_stack = (int (*) (struct target_ops *)) return_zero; | |
373 | ||
374 | if (t->to_has_registers == NULL) | |
375 | t->to_has_registers = (int (*) (struct target_ops *)) return_zero; | |
376 | ||
377 | if (t->to_has_execution == NULL) | |
aeaec162 | 378 | t->to_has_execution = (int (*) (struct target_ops *, ptid_t)) return_zero; |
1101cb7b TT |
379 | |
380 | install_delegators (t); | |
c22a2b88 TT |
381 | } |
382 | ||
383 | /* Add possible target architecture T to the list and add a new | |
384 | command 'target T->to_shortname'. Set COMPLETER as the command's | |
385 | completer if not NULL. */ | |
386 | ||
387 | void | |
388 | add_target_with_completer (struct target_ops *t, | |
389 | completer_ftype *completer) | |
390 | { | |
391 | struct cmd_list_element *c; | |
392 | ||
393 | complete_target_initialization (t); | |
c35b1492 | 394 | |
c906108c SS |
395 | if (!target_structs) |
396 | { | |
397 | target_struct_allocsize = DEFAULT_ALLOCSIZE; | |
398 | target_structs = (struct target_ops **) xmalloc | |
399 | (target_struct_allocsize * sizeof (*target_structs)); | |
400 | } | |
401 | if (target_struct_size >= target_struct_allocsize) | |
402 | { | |
403 | target_struct_allocsize *= 2; | |
404 | target_structs = (struct target_ops **) | |
c5aa993b JM |
405 | xrealloc ((char *) target_structs, |
406 | target_struct_allocsize * sizeof (*target_structs)); | |
c906108c SS |
407 | } |
408 | target_structs[target_struct_size++] = t; | |
c906108c SS |
409 | |
410 | if (targetlist == NULL) | |
1bedd215 AC |
411 | add_prefix_cmd ("target", class_run, target_command, _("\ |
412 | Connect to a target machine or process.\n\ | |
c906108c SS |
413 | The first argument is the type or protocol of the target machine.\n\ |
414 | Remaining arguments are interpreted by the target protocol. For more\n\ | |
415 | information on the arguments for a particular protocol, type\n\ | |
1bedd215 | 416 | `help target ' followed by the protocol name."), |
c906108c | 417 | &targetlist, "target ", 0, &cmdlist); |
9852c492 YQ |
418 | c = add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc, |
419 | &targetlist); | |
420 | if (completer != NULL) | |
421 | set_cmd_completer (c, completer); | |
422 | } | |
423 | ||
424 | /* Add a possible target architecture to the list. */ | |
425 | ||
426 | void | |
427 | add_target (struct target_ops *t) | |
428 | { | |
429 | add_target_with_completer (t, NULL); | |
c906108c SS |
430 | } |
431 | ||
b48d48eb MM |
432 | /* See target.h. */ |
433 | ||
434 | void | |
435 | add_deprecated_target_alias (struct target_ops *t, char *alias) | |
436 | { | |
437 | struct cmd_list_element *c; | |
438 | char *alt; | |
439 | ||
440 | /* If we use add_alias_cmd, here, we do not get the deprecated warning, | |
441 | see PR cli/15104. */ | |
442 | c = add_cmd (alias, no_class, t->to_open, t->to_doc, &targetlist); | |
443 | alt = xstrprintf ("target %s", t->to_shortname); | |
444 | deprecate_cmd (c, alt); | |
445 | } | |
446 | ||
c906108c SS |
447 | /* Stub functions */ |
448 | ||
449 | void | |
fba45db2 | 450 | target_ignore (void) |
c906108c SS |
451 | { |
452 | } | |
453 | ||
7d85a9c0 JB |
454 | void |
455 | target_kill (void) | |
456 | { | |
457 | struct target_ops *t; | |
458 | ||
459 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
460 | if (t->to_kill != NULL) | |
461 | { | |
462 | if (targetdebug) | |
463 | fprintf_unfiltered (gdb_stdlog, "target_kill ()\n"); | |
464 | ||
465 | t->to_kill (t); | |
466 | return; | |
467 | } | |
468 | ||
469 | noprocess (); | |
470 | } | |
471 | ||
11cf8741 JM |
472 | void |
473 | target_load (char *arg, int from_tty) | |
474 | { | |
4e5d721f | 475 | target_dcache_invalidate (); |
71a9f134 | 476 | (*current_target.to_load) (¤t_target, arg, from_tty); |
11cf8741 JM |
477 | } |
478 | ||
947b8855 PA |
479 | void |
480 | target_create_inferior (char *exec_file, char *args, | |
481 | char **env, int from_tty) | |
136d6dae VP |
482 | { |
483 | struct target_ops *t; | |
5d502164 | 484 | |
136d6dae VP |
485 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
486 | { | |
487 | if (t->to_create_inferior != NULL) | |
488 | { | |
489 | t->to_create_inferior (t, exec_file, args, env, from_tty); | |
947b8855 PA |
490 | if (targetdebug) |
491 | fprintf_unfiltered (gdb_stdlog, | |
492 | "target_create_inferior (%s, %s, xxx, %d)\n", | |
493 | exec_file, args, from_tty); | |
136d6dae VP |
494 | return; |
495 | } | |
496 | } | |
497 | ||
498 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 499 | _("could not find a target to create inferior")); |
136d6dae VP |
500 | } |
501 | ||
d9d2d8b6 PA |
502 | void |
503 | target_terminal_inferior (void) | |
504 | { | |
505 | /* A background resume (``run&'') should leave GDB in control of the | |
c378eb4e | 506 | terminal. Use target_can_async_p, not target_is_async_p, since at |
ba7f6c64 VP |
507 | this point the target is not async yet. However, if sync_execution |
508 | is not set, we know it will become async prior to resume. */ | |
509 | if (target_can_async_p () && !sync_execution) | |
d9d2d8b6 PA |
510 | return; |
511 | ||
512 | /* If GDB is resuming the inferior in the foreground, install | |
513 | inferior's terminal modes. */ | |
d2f640d4 | 514 | (*current_target.to_terminal_inferior) (¤t_target); |
d9d2d8b6 | 515 | } |
136d6dae | 516 | |
c906108c | 517 | static int |
fba45db2 KB |
518 | nomemory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
519 | struct target_ops *t) | |
c906108c | 520 | { |
c378eb4e MS |
521 | errno = EIO; /* Can't read/write this location. */ |
522 | return 0; /* No bytes handled. */ | |
c906108c SS |
523 | } |
524 | ||
525 | static void | |
fba45db2 | 526 | tcomplain (void) |
c906108c | 527 | { |
8a3fe4f8 | 528 | error (_("You can't do that when your target is `%s'"), |
c906108c SS |
529 | current_target.to_shortname); |
530 | } | |
531 | ||
532 | void | |
fba45db2 | 533 | noprocess (void) |
c906108c | 534 | { |
8a3fe4f8 | 535 | error (_("You can't do that without a process to debug.")); |
c906108c SS |
536 | } |
537 | ||
c906108c | 538 | static void |
0a4f40a2 | 539 | default_terminal_info (struct target_ops *self, const char *args, int from_tty) |
c906108c | 540 | { |
a3f17187 | 541 | printf_unfiltered (_("No saved terminal information.\n")); |
c906108c SS |
542 | } |
543 | ||
0ef643c8 JB |
544 | /* A default implementation for the to_get_ada_task_ptid target method. |
545 | ||
546 | This function builds the PTID by using both LWP and TID as part of | |
547 | the PTID lwp and tid elements. The pid used is the pid of the | |
548 | inferior_ptid. */ | |
549 | ||
2c0b251b | 550 | static ptid_t |
1e6b91a4 | 551 | default_get_ada_task_ptid (struct target_ops *self, long lwp, long tid) |
0ef643c8 JB |
552 | { |
553 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid); | |
554 | } | |
555 | ||
32231432 | 556 | static enum exec_direction_kind |
4c612759 | 557 | default_execution_direction (struct target_ops *self) |
32231432 PA |
558 | { |
559 | if (!target_can_execute_reverse) | |
560 | return EXEC_FORWARD; | |
561 | else if (!target_can_async_p ()) | |
562 | return EXEC_FORWARD; | |
563 | else | |
564 | gdb_assert_not_reached ("\ | |
565 | to_execution_direction must be implemented for reverse async"); | |
566 | } | |
567 | ||
7998dfc3 AC |
568 | /* Go through the target stack from top to bottom, copying over zero |
569 | entries in current_target, then filling in still empty entries. In | |
570 | effect, we are doing class inheritance through the pushed target | |
571 | vectors. | |
572 | ||
573 | NOTE: cagney/2003-10-17: The problem with this inheritance, as it | |
574 | is currently implemented, is that it discards any knowledge of | |
575 | which target an inherited method originally belonged to. | |
576 | Consequently, new new target methods should instead explicitly and | |
577 | locally search the target stack for the target that can handle the | |
578 | request. */ | |
c906108c SS |
579 | |
580 | static void | |
7998dfc3 | 581 | update_current_target (void) |
c906108c | 582 | { |
7998dfc3 AC |
583 | struct target_ops *t; |
584 | ||
08d8bcd7 | 585 | /* First, reset current's contents. */ |
7998dfc3 AC |
586 | memset (¤t_target, 0, sizeof (current_target)); |
587 | ||
1101cb7b TT |
588 | /* Install the delegators. */ |
589 | install_delegators (¤t_target); | |
590 | ||
7998dfc3 AC |
591 | #define INHERIT(FIELD, TARGET) \ |
592 | if (!current_target.FIELD) \ | |
593 | current_target.FIELD = (TARGET)->FIELD | |
594 | ||
595 | for (t = target_stack; t; t = t->beneath) | |
596 | { | |
597 | INHERIT (to_shortname, t); | |
598 | INHERIT (to_longname, t); | |
599 | INHERIT (to_doc, t); | |
b52323fa UW |
600 | /* Do not inherit to_open. */ |
601 | /* Do not inherit to_close. */ | |
136d6dae | 602 | /* Do not inherit to_attach. */ |
bebd3233 | 603 | /* Do not inherit to_post_attach. */ |
dc177b7a | 604 | INHERIT (to_attach_no_wait, t); |
136d6dae | 605 | /* Do not inherit to_detach. */ |
597320e7 | 606 | /* Do not inherit to_disconnect. */ |
28439f5e | 607 | /* Do not inherit to_resume. */ |
117de6a9 | 608 | /* Do not inherit to_wait. */ |
28439f5e PA |
609 | /* Do not inherit to_fetch_registers. */ |
610 | /* Do not inherit to_store_registers. */ | |
6c628163 | 611 | /* Do not inherit to_prepare_to_store. */ |
c8e73a31 | 612 | INHERIT (deprecated_xfer_memory, t); |
f86e59b2 | 613 | /* Do not inherit to_files_info. */ |
3db08215 MM |
614 | /* Do not inherit to_insert_breakpoint. */ |
615 | /* Do not inherit to_remove_breakpoint. */ | |
52b51d06 | 616 | /* Do not inherit to_can_use_hw_breakpoint. */ |
61b371f9 | 617 | /* Do not inherit to_insert_hw_breakpoint. */ |
418dabac | 618 | /* Do not inherit to_remove_hw_breakpoint. */ |
f1310107 | 619 | /* Do not inherit to_ranged_break_num_registers. */ |
016facd4 | 620 | /* Do not inherit to_insert_watchpoint. */ |
61dd109f | 621 | /* Do not inherit to_remove_watchpoint. */ |
9c06b0b4 TJB |
622 | /* Do not inherit to_insert_mask_watchpoint. */ |
623 | /* Do not inherit to_remove_mask_watchpoint. */ | |
6b84065d | 624 | /* Do not inherit to_stopped_data_address. */ |
74174d2e | 625 | INHERIT (to_have_steppable_watchpoint, t); |
7998dfc3 | 626 | INHERIT (to_have_continuable_watchpoint, t); |
6b84065d | 627 | /* Do not inherit to_stopped_by_watchpoint. */ |
65f160a9 | 628 | /* Do not inherit to_watchpoint_addr_within_range. */ |
d03655e4 | 629 | /* Do not inherit to_region_ok_for_hw_watchpoint. */ |
77cdffe9 | 630 | /* Do not inherit to_can_accel_watchpoint_condition. */ |
9c06b0b4 | 631 | /* Do not inherit to_masked_watch_num_registers. */ |
0343661d | 632 | /* Do not inherit to_terminal_init. */ |
ddeaacc9 | 633 | /* Do not inherit to_terminal_inferior. */ |
74fcbef9 | 634 | /* Do not inherit to_terminal_ours_for_output. */ |
e4a733f1 | 635 | /* Do not inherit to_terminal_ours. */ |
c6ea8f79 | 636 | /* Do not inherit to_terminal_save_ours. */ |
e19e919f | 637 | /* Do not inherit to_terminal_info. */ |
7d85a9c0 | 638 | /* Do not inherit to_kill. */ |
7634da87 | 639 | /* Do not inherit to_load. */ |
136d6dae | 640 | /* Do no inherit to_create_inferior. */ |
340ba4bf | 641 | /* Do not inherit to_post_startup_inferior. */ |
5958ebeb | 642 | /* Do not inherit to_insert_fork_catchpoint. */ |
e1a21fb7 | 643 | /* Do not inherit to_remove_fork_catchpoint. */ |
7e18a8dc | 644 | /* Do not inherit to_insert_vfork_catchpoint. */ |
95c3375e | 645 | /* Do not inherit to_remove_vfork_catchpoint. */ |
ee057212 | 646 | /* Do not inherit to_follow_fork. */ |
62f64d7a | 647 | /* Do not inherit to_insert_exec_catchpoint. */ |
cda0f38c | 648 | /* Do not inherit to_remove_exec_catchpoint. */ |
6a9fa051 | 649 | /* Do not inherit to_set_syscall_catchpoint. */ |
0db88c1d | 650 | /* Do not inherit to_has_exited. */ |
82892036 | 651 | /* Do not inherit to_mourn_inferior. */ |
7998dfc3 | 652 | INHERIT (to_can_run, t); |
2455069d | 653 | /* Do not inherit to_pass_signals. */ |
9b224c5e | 654 | /* Do not inherit to_program_signals. */ |
28439f5e PA |
655 | /* Do not inherit to_thread_alive. */ |
656 | /* Do not inherit to_find_new_threads. */ | |
117de6a9 | 657 | /* Do not inherit to_pid_to_str. */ |
4a7e6dda | 658 | /* Do not inherit to_extra_thread_info. */ |
825828fc | 659 | /* Do not inherit to_thread_name. */ |
7998dfc3 | 660 | INHERIT (to_stop, t); |
4b8a223f | 661 | /* Do not inherit to_xfer_partial. */ |
a53f3625 | 662 | /* Do not inherit to_rcmd. */ |
830ca330 | 663 | /* Do not inherit to_pid_to_exec_file. */ |
d9cb0195 | 664 | /* Do not inherit to_log_command. */ |
7998dfc3 | 665 | INHERIT (to_stratum, t); |
c378eb4e MS |
666 | /* Do not inherit to_has_all_memory. */ |
667 | /* Do not inherit to_has_memory. */ | |
668 | /* Do not inherit to_has_stack. */ | |
669 | /* Do not inherit to_has_registers. */ | |
670 | /* Do not inherit to_has_execution. */ | |
7998dfc3 | 671 | INHERIT (to_has_thread_control, t); |
6b84065d TT |
672 | /* Do not inherit to_can_async_p. */ |
673 | /* Do not inherit to_is_async_p. */ | |
674 | /* Do not inherit to_async. */ | |
0b5a2719 | 675 | /* Do not inherit to_find_memory_regions. */ |
16f796b1 | 676 | /* Do not inherit to_make_corefile_notes. */ |
3dbafbbb | 677 | /* Do not inherit to_get_bookmark. */ |
9bb9d61d | 678 | /* Do not inherit to_goto_bookmark. */ |
117de6a9 | 679 | /* Do not inherit to_get_thread_local_address. */ |
53e1cfc7 | 680 | /* Do not inherit to_can_execute_reverse. */ |
fe31bf5b | 681 | /* Do not inherit to_execution_direction. */ |
43eba180 | 682 | /* Do not inherit to_thread_architecture. */ |
424163ea | 683 | /* Do not inherit to_read_description. */ |
4229b31d | 684 | /* Do not inherit to_get_ada_task_ptid. */ |
08388c79 | 685 | /* Do not inherit to_search_memory. */ |
a7304748 | 686 | /* Do not inherit to_supports_multi_process. */ |
aab1b22d | 687 | /* Do not inherit to_supports_enable_disable_tracepoint. */ |
9409d39e | 688 | /* Do not inherit to_supports_string_tracing. */ |
5536135b | 689 | /* Do not inherit to_trace_init. */ |
9a980a22 | 690 | /* Do not inherit to_download_tracepoint. */ |
719acc4a | 691 | /* Do not inherit to_can_download_tracepoint. */ |
94eb98b9 | 692 | /* Do not inherit to_download_trace_state_variable. */ |
151f70f1 | 693 | /* Do not inherit to_enable_tracepoint. */ |
05c41993 | 694 | /* Do not inherit to_disable_tracepoint. */ |
86dd181d | 695 | /* Do not inherit to_trace_set_readonly_regions. */ |
25da2e80 | 696 | /* Do not inherit to_trace_start. */ |
4072d4ff | 697 | /* Do not inherit to_get_trace_status. */ |
6fea14cd | 698 | /* Do not inherit to_get_tracepoint_status. */ |
e51c07ea | 699 | /* Do not inherit to_trace_stop. */ |
afc94e66 | 700 | /* Do not inherit to_trace_find. */ |
959bcd0b | 701 | /* Do not inherit to_get_trace_state_variable_value. */ |
a2e6c147 | 702 | /* Do not inherit to_save_trace_data. */ |
1e949b00 | 703 | /* Do not inherit to_upload_tracepoints. */ |
08120467 | 704 | /* Do not inherit to_upload_trace_state_variables. */ |
ace92e7d | 705 | /* Do not inherit to_get_raw_trace_data. */ |
9249843f | 706 | /* Do not inherit to_get_min_fast_tracepoint_insn_len. */ |
35b1e5cc | 707 | INHERIT (to_set_disconnected_tracing, t); |
4daf5ac0 | 708 | INHERIT (to_set_circular_trace_buffer, t); |
f6f899bf | 709 | INHERIT (to_set_trace_buffer_size, t); |
f196051f | 710 | INHERIT (to_set_trace_notes, t); |
711e434b | 711 | INHERIT (to_get_tib_address, t); |
d914c394 | 712 | INHERIT (to_set_permissions, t); |
0fb4aa4b PA |
713 | INHERIT (to_static_tracepoint_marker_at, t); |
714 | INHERIT (to_static_tracepoint_markers_by_strid, t); | |
b3b9301e | 715 | INHERIT (to_traceframe_info, t); |
d1feda86 YQ |
716 | INHERIT (to_use_agent, t); |
717 | INHERIT (to_can_use_agent, t); | |
ced63ec0 | 718 | INHERIT (to_augmented_libraries_svr4_read, t); |
7998dfc3 | 719 | INHERIT (to_magic, t); |
b775012e | 720 | INHERIT (to_supports_evaluation_of_breakpoint_conditions, t); |
d3ce09f5 | 721 | INHERIT (to_can_run_breakpoint_commands, t); |
fd79ecee | 722 | /* Do not inherit to_memory_map. */ |
a76d924d DJ |
723 | /* Do not inherit to_flash_erase. */ |
724 | /* Do not inherit to_flash_done. */ | |
7998dfc3 AC |
725 | } |
726 | #undef INHERIT | |
727 | ||
728 | /* Clean up a target struct so it no longer has any zero pointers in | |
0088c768 AC |
729 | it. Some entries are defaulted to a method that print an error, |
730 | others are hard-wired to a standard recursive default. */ | |
c906108c SS |
731 | |
732 | #define de_fault(field, value) \ | |
7998dfc3 AC |
733 | if (!current_target.field) \ |
734 | current_target.field = value | |
0d06e24b | 735 | |
2bc416ba DJ |
736 | de_fault (to_open, |
737 | (void (*) (char *, int)) | |
0d06e24b | 738 | tcomplain); |
2bc416ba | 739 | de_fault (to_close, |
de90e03d | 740 | (void (*) (struct target_ops *)) |
0d06e24b | 741 | target_ignore); |
2bc416ba | 742 | de_fault (deprecated_xfer_memory, |
3e43a32a MS |
743 | (int (*) (CORE_ADDR, gdb_byte *, int, int, |
744 | struct mem_attrib *, struct target_ops *)) | |
0d06e24b | 745 | nomemory); |
2bc416ba | 746 | de_fault (to_can_run, |
da82bd6b | 747 | (int (*) (struct target_ops *)) |
0d06e24b | 748 | return_zero); |
2bc416ba | 749 | de_fault (to_stop, |
1eab8a48 | 750 | (void (*) (struct target_ops *, ptid_t)) |
0d06e24b | 751 | target_ignore); |
424163ea | 752 | current_target.to_read_description = NULL; |
35b1e5cc | 753 | de_fault (to_set_disconnected_tracing, |
37b25738 | 754 | (void (*) (struct target_ops *, int)) |
4daf5ac0 SS |
755 | target_ignore); |
756 | de_fault (to_set_circular_trace_buffer, | |
736d5b1f | 757 | (void (*) (struct target_ops *, int)) |
4daf5ac0 | 758 | target_ignore); |
f6f899bf | 759 | de_fault (to_set_trace_buffer_size, |
4da384be | 760 | (void (*) (struct target_ops *, LONGEST)) |
f6f899bf | 761 | target_ignore); |
f196051f | 762 | de_fault (to_set_trace_notes, |
d9e68a2c TT |
763 | (int (*) (struct target_ops *, |
764 | const char *, const char *, const char *)) | |
f196051f | 765 | return_zero); |
711e434b | 766 | de_fault (to_get_tib_address, |
bd7ae0f5 | 767 | (int (*) (struct target_ops *, ptid_t, CORE_ADDR *)) |
711e434b | 768 | tcomplain); |
d914c394 | 769 | de_fault (to_set_permissions, |
c378d69d | 770 | (void (*) (struct target_ops *)) |
d914c394 | 771 | target_ignore); |
0fb4aa4b | 772 | de_fault (to_static_tracepoint_marker_at, |
61fc905d TT |
773 | (int (*) (struct target_ops *, |
774 | CORE_ADDR, struct static_tracepoint_marker *)) | |
0fb4aa4b PA |
775 | return_zero); |
776 | de_fault (to_static_tracepoint_markers_by_strid, | |
c686c57f TT |
777 | (VEC(static_tracepoint_marker_p) * (*) (struct target_ops *, |
778 | const char *)) | |
0fb4aa4b | 779 | tcomplain); |
b3b9301e | 780 | de_fault (to_traceframe_info, |
a893e81f | 781 | (struct traceframe_info * (*) (struct target_ops *)) |
1b67eb02 | 782 | return_null); |
b775012e | 783 | de_fault (to_supports_evaluation_of_breakpoint_conditions, |
efcc2da7 | 784 | (int (*) (struct target_ops *)) |
b775012e | 785 | return_zero); |
d3ce09f5 | 786 | de_fault (to_can_run_breakpoint_commands, |
78eff0ec | 787 | (int (*) (struct target_ops *)) |
d3ce09f5 | 788 | return_zero); |
d1feda86 | 789 | de_fault (to_use_agent, |
2c152180 | 790 | (int (*) (struct target_ops *, int)) |
d1feda86 YQ |
791 | tcomplain); |
792 | de_fault (to_can_use_agent, | |
fe38f897 | 793 | (int (*) (struct target_ops *)) |
d1feda86 | 794 | return_zero); |
ced63ec0 | 795 | de_fault (to_augmented_libraries_svr4_read, |
5436ff03 | 796 | (int (*) (struct target_ops *)) |
ced63ec0 | 797 | return_zero); |
32231432 | 798 | |
c906108c | 799 | #undef de_fault |
c906108c | 800 | |
7998dfc3 AC |
801 | /* Finally, position the target-stack beneath the squashed |
802 | "current_target". That way code looking for a non-inherited | |
803 | target method can quickly and simply find it. */ | |
804 | current_target.beneath = target_stack; | |
b4b61fdb DJ |
805 | |
806 | if (targetdebug) | |
807 | setup_target_debug (); | |
c906108c SS |
808 | } |
809 | ||
810 | /* Push a new target type into the stack of the existing target accessors, | |
811 | possibly superseding some of the existing accessors. | |
812 | ||
c906108c SS |
813 | Rather than allow an empty stack, we always have the dummy target at |
814 | the bottom stratum, so we can call the function vectors without | |
815 | checking them. */ | |
816 | ||
b26a4dcb | 817 | void |
fba45db2 | 818 | push_target (struct target_ops *t) |
c906108c | 819 | { |
258b763a | 820 | struct target_ops **cur; |
c906108c SS |
821 | |
822 | /* Check magic number. If wrong, it probably means someone changed | |
823 | the struct definition, but not all the places that initialize one. */ | |
824 | if (t->to_magic != OPS_MAGIC) | |
825 | { | |
c5aa993b JM |
826 | fprintf_unfiltered (gdb_stderr, |
827 | "Magic number of %s target struct wrong\n", | |
828 | t->to_shortname); | |
3e43a32a MS |
829 | internal_error (__FILE__, __LINE__, |
830 | _("failed internal consistency check")); | |
c906108c SS |
831 | } |
832 | ||
258b763a AC |
833 | /* Find the proper stratum to install this target in. */ |
834 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
c906108c | 835 | { |
258b763a | 836 | if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum) |
c906108c SS |
837 | break; |
838 | } | |
839 | ||
258b763a | 840 | /* If there's already targets at this stratum, remove them. */ |
88c231eb | 841 | /* FIXME: cagney/2003-10-15: I think this should be popping all |
258b763a AC |
842 | targets to CUR, and not just those at this stratum level. */ |
843 | while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum) | |
844 | { | |
845 | /* There's already something at this stratum level. Close it, | |
846 | and un-hook it from the stack. */ | |
847 | struct target_ops *tmp = (*cur); | |
5d502164 | 848 | |
258b763a AC |
849 | (*cur) = (*cur)->beneath; |
850 | tmp->beneath = NULL; | |
460014f5 | 851 | target_close (tmp); |
258b763a | 852 | } |
c906108c SS |
853 | |
854 | /* We have removed all targets in our stratum, now add the new one. */ | |
258b763a AC |
855 | t->beneath = (*cur); |
856 | (*cur) = t; | |
c906108c SS |
857 | |
858 | update_current_target (); | |
c906108c SS |
859 | } |
860 | ||
2bc416ba | 861 | /* Remove a target_ops vector from the stack, wherever it may be. |
c906108c SS |
862 | Return how many times it was removed (0 or 1). */ |
863 | ||
864 | int | |
fba45db2 | 865 | unpush_target (struct target_ops *t) |
c906108c | 866 | { |
258b763a AC |
867 | struct target_ops **cur; |
868 | struct target_ops *tmp; | |
c906108c | 869 | |
c8d104ad PA |
870 | if (t->to_stratum == dummy_stratum) |
871 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 872 | _("Attempt to unpush the dummy target")); |
c8d104ad | 873 | |
c906108c | 874 | /* Look for the specified target. Note that we assume that a target |
c378eb4e | 875 | can only occur once in the target stack. */ |
c906108c | 876 | |
258b763a AC |
877 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) |
878 | { | |
879 | if ((*cur) == t) | |
880 | break; | |
881 | } | |
c906108c | 882 | |
305436e0 PA |
883 | /* If we don't find target_ops, quit. Only open targets should be |
884 | closed. */ | |
258b763a | 885 | if ((*cur) == NULL) |
305436e0 | 886 | return 0; |
5269965e | 887 | |
c378eb4e | 888 | /* Unchain the target. */ |
258b763a AC |
889 | tmp = (*cur); |
890 | (*cur) = (*cur)->beneath; | |
891 | tmp->beneath = NULL; | |
c906108c SS |
892 | |
893 | update_current_target (); | |
c906108c | 894 | |
305436e0 PA |
895 | /* Finally close the target. Note we do this after unchaining, so |
896 | any target method calls from within the target_close | |
897 | implementation don't end up in T anymore. */ | |
460014f5 | 898 | target_close (t); |
305436e0 | 899 | |
c906108c SS |
900 | return 1; |
901 | } | |
902 | ||
aa76d38d | 903 | void |
460014f5 | 904 | pop_all_targets_above (enum strata above_stratum) |
aa76d38d | 905 | { |
87ab71f0 | 906 | while ((int) (current_target.to_stratum) > (int) above_stratum) |
aa76d38d | 907 | { |
aa76d38d PA |
908 | if (!unpush_target (target_stack)) |
909 | { | |
910 | fprintf_unfiltered (gdb_stderr, | |
911 | "pop_all_targets couldn't find target %s\n", | |
b52323fa | 912 | target_stack->to_shortname); |
aa76d38d PA |
913 | internal_error (__FILE__, __LINE__, |
914 | _("failed internal consistency check")); | |
915 | break; | |
916 | } | |
917 | } | |
918 | } | |
919 | ||
87ab71f0 | 920 | void |
460014f5 | 921 | pop_all_targets (void) |
87ab71f0 | 922 | { |
460014f5 | 923 | pop_all_targets_above (dummy_stratum); |
87ab71f0 PA |
924 | } |
925 | ||
c0edd9ed JK |
926 | /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */ |
927 | ||
928 | int | |
929 | target_is_pushed (struct target_ops *t) | |
930 | { | |
931 | struct target_ops **cur; | |
932 | ||
933 | /* Check magic number. If wrong, it probably means someone changed | |
934 | the struct definition, but not all the places that initialize one. */ | |
935 | if (t->to_magic != OPS_MAGIC) | |
936 | { | |
937 | fprintf_unfiltered (gdb_stderr, | |
938 | "Magic number of %s target struct wrong\n", | |
939 | t->to_shortname); | |
3e43a32a MS |
940 | internal_error (__FILE__, __LINE__, |
941 | _("failed internal consistency check")); | |
c0edd9ed JK |
942 | } |
943 | ||
944 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
945 | if (*cur == t) | |
946 | return 1; | |
947 | ||
948 | return 0; | |
949 | } | |
950 | ||
72f5cf0e | 951 | /* Using the objfile specified in OBJFILE, find the address for the |
9e35dae4 DJ |
952 | current thread's thread-local storage with offset OFFSET. */ |
953 | CORE_ADDR | |
954 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) | |
955 | { | |
956 | volatile CORE_ADDR addr = 0; | |
117de6a9 PA |
957 | struct target_ops *target; |
958 | ||
959 | for (target = current_target.beneath; | |
960 | target != NULL; | |
961 | target = target->beneath) | |
962 | { | |
963 | if (target->to_get_thread_local_address != NULL) | |
964 | break; | |
965 | } | |
9e35dae4 | 966 | |
117de6a9 | 967 | if (target != NULL |
f5656ead | 968 | && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ())) |
9e35dae4 DJ |
969 | { |
970 | ptid_t ptid = inferior_ptid; | |
971 | volatile struct gdb_exception ex; | |
972 | ||
973 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
974 | { | |
975 | CORE_ADDR lm_addr; | |
976 | ||
977 | /* Fetch the load module address for this objfile. */ | |
f5656ead | 978 | lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch (), |
9e35dae4 DJ |
979 | objfile); |
980 | /* If it's 0, throw the appropriate exception. */ | |
981 | if (lm_addr == 0) | |
982 | throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR, | |
983 | _("TLS load module not found")); | |
984 | ||
3e43a32a MS |
985 | addr = target->to_get_thread_local_address (target, ptid, |
986 | lm_addr, offset); | |
9e35dae4 DJ |
987 | } |
988 | /* If an error occurred, print TLS related messages here. Otherwise, | |
989 | throw the error to some higher catcher. */ | |
990 | if (ex.reason < 0) | |
991 | { | |
992 | int objfile_is_library = (objfile->flags & OBJF_SHARED); | |
993 | ||
994 | switch (ex.error) | |
995 | { | |
996 | case TLS_NO_LIBRARY_SUPPORT_ERROR: | |
3e43a32a MS |
997 | error (_("Cannot find thread-local variables " |
998 | "in this thread library.")); | |
9e35dae4 DJ |
999 | break; |
1000 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: | |
1001 | if (objfile_is_library) | |
1002 | error (_("Cannot find shared library `%s' in dynamic" | |
4262abfb | 1003 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
1004 | else |
1005 | error (_("Cannot find executable file `%s' in dynamic" | |
4262abfb | 1006 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
1007 | break; |
1008 | case TLS_NOT_ALLOCATED_YET_ERROR: | |
1009 | if (objfile_is_library) | |
1010 | error (_("The inferior has not yet allocated storage for" | |
1011 | " thread-local variables in\n" | |
1012 | "the shared library `%s'\n" | |
1013 | "for %s"), | |
4262abfb | 1014 | objfile_name (objfile), target_pid_to_str (ptid)); |
9e35dae4 DJ |
1015 | else |
1016 | error (_("The inferior has not yet allocated storage for" | |
1017 | " thread-local variables in\n" | |
1018 | "the executable `%s'\n" | |
1019 | "for %s"), | |
4262abfb | 1020 | objfile_name (objfile), target_pid_to_str (ptid)); |
9e35dae4 DJ |
1021 | break; |
1022 | case TLS_GENERIC_ERROR: | |
1023 | if (objfile_is_library) | |
1024 | error (_("Cannot find thread-local storage for %s, " | |
1025 | "shared library %s:\n%s"), | |
1026 | target_pid_to_str (ptid), | |
4262abfb | 1027 | objfile_name (objfile), ex.message); |
9e35dae4 DJ |
1028 | else |
1029 | error (_("Cannot find thread-local storage for %s, " | |
1030 | "executable file %s:\n%s"), | |
1031 | target_pid_to_str (ptid), | |
4262abfb | 1032 | objfile_name (objfile), ex.message); |
9e35dae4 DJ |
1033 | break; |
1034 | default: | |
1035 | throw_exception (ex); | |
1036 | break; | |
1037 | } | |
1038 | } | |
1039 | } | |
1040 | /* It wouldn't be wrong here to try a gdbarch method, too; finding | |
1041 | TLS is an ABI-specific thing. But we don't do that yet. */ | |
1042 | else | |
1043 | error (_("Cannot find thread-local variables on this target")); | |
1044 | ||
1045 | return addr; | |
1046 | } | |
1047 | ||
6be7b56e | 1048 | const char * |
9b409511 | 1049 | target_xfer_status_to_string (enum target_xfer_status err) |
6be7b56e PA |
1050 | { |
1051 | #define CASE(X) case X: return #X | |
1052 | switch (err) | |
1053 | { | |
1054 | CASE(TARGET_XFER_E_IO); | |
1055 | CASE(TARGET_XFER_E_UNAVAILABLE); | |
1056 | default: | |
1057 | return "<unknown>"; | |
1058 | } | |
1059 | #undef CASE | |
1060 | }; | |
1061 | ||
1062 | ||
c906108c SS |
1063 | #undef MIN |
1064 | #define MIN(A, B) (((A) <= (B)) ? (A) : (B)) | |
1065 | ||
1066 | /* target_read_string -- read a null terminated string, up to LEN bytes, | |
1067 | from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful. | |
1068 | Set *STRING to a pointer to malloc'd memory containing the data; the caller | |
1069 | is responsible for freeing it. Return the number of bytes successfully | |
1070 | read. */ | |
1071 | ||
1072 | int | |
fba45db2 | 1073 | target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop) |
c906108c | 1074 | { |
c2e8b827 | 1075 | int tlen, offset, i; |
1b0ba102 | 1076 | gdb_byte buf[4]; |
c906108c SS |
1077 | int errcode = 0; |
1078 | char *buffer; | |
1079 | int buffer_allocated; | |
1080 | char *bufptr; | |
1081 | unsigned int nbytes_read = 0; | |
1082 | ||
6217bf3e MS |
1083 | gdb_assert (string); |
1084 | ||
c906108c SS |
1085 | /* Small for testing. */ |
1086 | buffer_allocated = 4; | |
1087 | buffer = xmalloc (buffer_allocated); | |
1088 | bufptr = buffer; | |
1089 | ||
c906108c SS |
1090 | while (len > 0) |
1091 | { | |
1092 | tlen = MIN (len, 4 - (memaddr & 3)); | |
1093 | offset = memaddr & 3; | |
1094 | ||
1b0ba102 | 1095 | errcode = target_read_memory (memaddr & ~3, buf, sizeof buf); |
c906108c SS |
1096 | if (errcode != 0) |
1097 | { | |
1098 | /* The transfer request might have crossed the boundary to an | |
c378eb4e | 1099 | unallocated region of memory. Retry the transfer, requesting |
c906108c SS |
1100 | a single byte. */ |
1101 | tlen = 1; | |
1102 | offset = 0; | |
b8eb5af0 | 1103 | errcode = target_read_memory (memaddr, buf, 1); |
c906108c SS |
1104 | if (errcode != 0) |
1105 | goto done; | |
1106 | } | |
1107 | ||
1108 | if (bufptr - buffer + tlen > buffer_allocated) | |
1109 | { | |
1110 | unsigned int bytes; | |
5d502164 | 1111 | |
c906108c SS |
1112 | bytes = bufptr - buffer; |
1113 | buffer_allocated *= 2; | |
1114 | buffer = xrealloc (buffer, buffer_allocated); | |
1115 | bufptr = buffer + bytes; | |
1116 | } | |
1117 | ||
1118 | for (i = 0; i < tlen; i++) | |
1119 | { | |
1120 | *bufptr++ = buf[i + offset]; | |
1121 | if (buf[i + offset] == '\000') | |
1122 | { | |
1123 | nbytes_read += i + 1; | |
1124 | goto done; | |
1125 | } | |
1126 | } | |
1127 | ||
1128 | memaddr += tlen; | |
1129 | len -= tlen; | |
1130 | nbytes_read += tlen; | |
1131 | } | |
c5aa993b | 1132 | done: |
6217bf3e | 1133 | *string = buffer; |
c906108c SS |
1134 | if (errnop != NULL) |
1135 | *errnop = errcode; | |
c906108c SS |
1136 | return nbytes_read; |
1137 | } | |
1138 | ||
07b82ea5 PA |
1139 | struct target_section_table * |
1140 | target_get_section_table (struct target_ops *target) | |
1141 | { | |
1142 | struct target_ops *t; | |
1143 | ||
1144 | if (targetdebug) | |
1145 | fprintf_unfiltered (gdb_stdlog, "target_get_section_table ()\n"); | |
1146 | ||
1147 | for (t = target; t != NULL; t = t->beneath) | |
1148 | if (t->to_get_section_table != NULL) | |
1149 | return (*t->to_get_section_table) (t); | |
1150 | ||
1151 | return NULL; | |
1152 | } | |
1153 | ||
8db32d44 | 1154 | /* Find a section containing ADDR. */ |
07b82ea5 | 1155 | |
0542c86d | 1156 | struct target_section * |
8db32d44 AC |
1157 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
1158 | { | |
07b82ea5 | 1159 | struct target_section_table *table = target_get_section_table (target); |
0542c86d | 1160 | struct target_section *secp; |
07b82ea5 PA |
1161 | |
1162 | if (table == NULL) | |
1163 | return NULL; | |
1164 | ||
1165 | for (secp = table->sections; secp < table->sections_end; secp++) | |
8db32d44 AC |
1166 | { |
1167 | if (addr >= secp->addr && addr < secp->endaddr) | |
1168 | return secp; | |
1169 | } | |
1170 | return NULL; | |
1171 | } | |
1172 | ||
e6e4e701 PA |
1173 | /* Read memory from the live target, even if currently inspecting a |
1174 | traceframe. The return is the same as that of target_read. */ | |
1175 | ||
9b409511 | 1176 | static enum target_xfer_status |
e6e4e701 | 1177 | target_read_live_memory (enum target_object object, |
9b409511 YQ |
1178 | ULONGEST memaddr, gdb_byte *myaddr, ULONGEST len, |
1179 | ULONGEST *xfered_len) | |
e6e4e701 | 1180 | { |
9b409511 | 1181 | enum target_xfer_status ret; |
e6e4e701 PA |
1182 | struct cleanup *cleanup; |
1183 | ||
1184 | /* Switch momentarily out of tfind mode so to access live memory. | |
1185 | Note that this must not clear global state, such as the frame | |
1186 | cache, which must still remain valid for the previous traceframe. | |
1187 | We may be _building_ the frame cache at this point. */ | |
1188 | cleanup = make_cleanup_restore_traceframe_number (); | |
1189 | set_traceframe_number (-1); | |
1190 | ||
9b409511 YQ |
1191 | ret = target_xfer_partial (current_target.beneath, object, NULL, |
1192 | myaddr, NULL, memaddr, len, xfered_len); | |
e6e4e701 PA |
1193 | |
1194 | do_cleanups (cleanup); | |
1195 | return ret; | |
1196 | } | |
1197 | ||
1198 | /* Using the set of read-only target sections of OPS, read live | |
1199 | read-only memory. Note that the actual reads start from the | |
5657161f PA |
1200 | top-most target again. |
1201 | ||
1202 | For interface/parameters/return description see target.h, | |
1203 | to_xfer_partial. */ | |
e6e4e701 | 1204 | |
9b409511 | 1205 | static enum target_xfer_status |
e6e4e701 PA |
1206 | memory_xfer_live_readonly_partial (struct target_ops *ops, |
1207 | enum target_object object, | |
1208 | gdb_byte *readbuf, ULONGEST memaddr, | |
9b409511 | 1209 | ULONGEST len, ULONGEST *xfered_len) |
e6e4e701 PA |
1210 | { |
1211 | struct target_section *secp; | |
1212 | struct target_section_table *table; | |
1213 | ||
1214 | secp = target_section_by_addr (ops, memaddr); | |
1215 | if (secp != NULL | |
2b2848e2 DE |
1216 | && (bfd_get_section_flags (secp->the_bfd_section->owner, |
1217 | secp->the_bfd_section) | |
e6e4e701 PA |
1218 | & SEC_READONLY)) |
1219 | { | |
1220 | struct target_section *p; | |
1221 | ULONGEST memend = memaddr + len; | |
1222 | ||
1223 | table = target_get_section_table (ops); | |
1224 | ||
1225 | for (p = table->sections; p < table->sections_end; p++) | |
1226 | { | |
1227 | if (memaddr >= p->addr) | |
1228 | { | |
1229 | if (memend <= p->endaddr) | |
1230 | { | |
1231 | /* Entire transfer is within this section. */ | |
1232 | return target_read_live_memory (object, memaddr, | |
9b409511 | 1233 | readbuf, len, xfered_len); |
e6e4e701 PA |
1234 | } |
1235 | else if (memaddr >= p->endaddr) | |
1236 | { | |
1237 | /* This section ends before the transfer starts. */ | |
1238 | continue; | |
1239 | } | |
1240 | else | |
1241 | { | |
1242 | /* This section overlaps the transfer. Just do half. */ | |
1243 | len = p->endaddr - memaddr; | |
1244 | return target_read_live_memory (object, memaddr, | |
9b409511 | 1245 | readbuf, len, xfered_len); |
e6e4e701 PA |
1246 | } |
1247 | } | |
1248 | } | |
1249 | } | |
1250 | ||
9b409511 | 1251 | return TARGET_XFER_EOF; |
e6e4e701 PA |
1252 | } |
1253 | ||
9f713294 YQ |
1254 | /* Read memory from more than one valid target. A core file, for |
1255 | instance, could have some of memory but delegate other bits to | |
1256 | the target below it. So, we must manually try all targets. */ | |
1257 | ||
9b409511 | 1258 | static enum target_xfer_status |
17fde6d0 | 1259 | raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf, |
9b409511 YQ |
1260 | const gdb_byte *writebuf, ULONGEST memaddr, LONGEST len, |
1261 | ULONGEST *xfered_len) | |
9f713294 | 1262 | { |
9b409511 | 1263 | enum target_xfer_status res; |
9f713294 YQ |
1264 | |
1265 | do | |
1266 | { | |
1267 | res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 YQ |
1268 | readbuf, writebuf, memaddr, len, |
1269 | xfered_len); | |
1270 | if (res == TARGET_XFER_OK) | |
9f713294 YQ |
1271 | break; |
1272 | ||
633785ff MM |
1273 | /* Stop if the target reports that the memory is not available. */ |
1274 | if (res == TARGET_XFER_E_UNAVAILABLE) | |
1275 | break; | |
1276 | ||
9f713294 YQ |
1277 | /* We want to continue past core files to executables, but not |
1278 | past a running target's memory. */ | |
1279 | if (ops->to_has_all_memory (ops)) | |
1280 | break; | |
1281 | ||
1282 | ops = ops->beneath; | |
1283 | } | |
1284 | while (ops != NULL); | |
1285 | ||
1286 | return res; | |
1287 | } | |
1288 | ||
7f79c47e DE |
1289 | /* Perform a partial memory transfer. |
1290 | For docs see target.h, to_xfer_partial. */ | |
cf7a04e8 | 1291 | |
9b409511 | 1292 | static enum target_xfer_status |
f0ba3972 | 1293 | memory_xfer_partial_1 (struct target_ops *ops, enum target_object object, |
17fde6d0 | 1294 | gdb_byte *readbuf, const gdb_byte *writebuf, ULONGEST memaddr, |
9b409511 | 1295 | ULONGEST len, ULONGEST *xfered_len) |
0779438d | 1296 | { |
9b409511 | 1297 | enum target_xfer_status res; |
cf7a04e8 DJ |
1298 | int reg_len; |
1299 | struct mem_region *region; | |
4e5d721f | 1300 | struct inferior *inf; |
cf7a04e8 | 1301 | |
07b82ea5 PA |
1302 | /* For accesses to unmapped overlay sections, read directly from |
1303 | files. Must do this first, as MEMADDR may need adjustment. */ | |
1304 | if (readbuf != NULL && overlay_debugging) | |
1305 | { | |
1306 | struct obj_section *section = find_pc_overlay (memaddr); | |
5d502164 | 1307 | |
07b82ea5 PA |
1308 | if (pc_in_unmapped_range (memaddr, section)) |
1309 | { | |
1310 | struct target_section_table *table | |
1311 | = target_get_section_table (ops); | |
1312 | const char *section_name = section->the_bfd_section->name; | |
5d502164 | 1313 | |
07b82ea5 PA |
1314 | memaddr = overlay_mapped_address (memaddr, section); |
1315 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 1316 | memaddr, len, xfered_len, |
07b82ea5 PA |
1317 | table->sections, |
1318 | table->sections_end, | |
1319 | section_name); | |
1320 | } | |
1321 | } | |
1322 | ||
1323 | /* Try the executable files, if "trust-readonly-sections" is set. */ | |
cf7a04e8 DJ |
1324 | if (readbuf != NULL && trust_readonly) |
1325 | { | |
0542c86d | 1326 | struct target_section *secp; |
07b82ea5 | 1327 | struct target_section_table *table; |
cf7a04e8 DJ |
1328 | |
1329 | secp = target_section_by_addr (ops, memaddr); | |
1330 | if (secp != NULL | |
2b2848e2 DE |
1331 | && (bfd_get_section_flags (secp->the_bfd_section->owner, |
1332 | secp->the_bfd_section) | |
cf7a04e8 | 1333 | & SEC_READONLY)) |
07b82ea5 PA |
1334 | { |
1335 | table = target_get_section_table (ops); | |
1336 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 1337 | memaddr, len, xfered_len, |
07b82ea5 PA |
1338 | table->sections, |
1339 | table->sections_end, | |
1340 | NULL); | |
1341 | } | |
98646950 UW |
1342 | } |
1343 | ||
e6e4e701 PA |
1344 | /* If reading unavailable memory in the context of traceframes, and |
1345 | this address falls within a read-only section, fallback to | |
1346 | reading from live memory. */ | |
1347 | if (readbuf != NULL && get_traceframe_number () != -1) | |
1348 | { | |
1349 | VEC(mem_range_s) *available; | |
1350 | ||
1351 | /* If we fail to get the set of available memory, then the | |
1352 | target does not support querying traceframe info, and so we | |
1353 | attempt reading from the traceframe anyway (assuming the | |
1354 | target implements the old QTro packet then). */ | |
1355 | if (traceframe_available_memory (&available, memaddr, len)) | |
1356 | { | |
1357 | struct cleanup *old_chain; | |
1358 | ||
1359 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available); | |
1360 | ||
1361 | if (VEC_empty (mem_range_s, available) | |
1362 | || VEC_index (mem_range_s, available, 0)->start != memaddr) | |
1363 | { | |
1364 | /* Don't read into the traceframe's available | |
1365 | memory. */ | |
1366 | if (!VEC_empty (mem_range_s, available)) | |
1367 | { | |
1368 | LONGEST oldlen = len; | |
1369 | ||
1370 | len = VEC_index (mem_range_s, available, 0)->start - memaddr; | |
1371 | gdb_assert (len <= oldlen); | |
1372 | } | |
1373 | ||
1374 | do_cleanups (old_chain); | |
1375 | ||
1376 | /* This goes through the topmost target again. */ | |
1377 | res = memory_xfer_live_readonly_partial (ops, object, | |
9b409511 YQ |
1378 | readbuf, memaddr, |
1379 | len, xfered_len); | |
1380 | if (res == TARGET_XFER_OK) | |
1381 | return TARGET_XFER_OK; | |
1382 | else | |
1383 | { | |
1384 | /* No use trying further, we know some memory starting | |
1385 | at MEMADDR isn't available. */ | |
1386 | *xfered_len = len; | |
1387 | return TARGET_XFER_E_UNAVAILABLE; | |
1388 | } | |
e6e4e701 PA |
1389 | } |
1390 | ||
1391 | /* Don't try to read more than how much is available, in | |
1392 | case the target implements the deprecated QTro packet to | |
1393 | cater for older GDBs (the target's knowledge of read-only | |
1394 | sections may be outdated by now). */ | |
1395 | len = VEC_index (mem_range_s, available, 0)->length; | |
1396 | ||
1397 | do_cleanups (old_chain); | |
1398 | } | |
1399 | } | |
1400 | ||
cf7a04e8 DJ |
1401 | /* Try GDB's internal data cache. */ |
1402 | region = lookup_mem_region (memaddr); | |
4b5752d0 VP |
1403 | /* region->hi == 0 means there's no upper bound. */ |
1404 | if (memaddr + len < region->hi || region->hi == 0) | |
cf7a04e8 DJ |
1405 | reg_len = len; |
1406 | else | |
1407 | reg_len = region->hi - memaddr; | |
1408 | ||
1409 | switch (region->attrib.mode) | |
1410 | { | |
1411 | case MEM_RO: | |
1412 | if (writebuf != NULL) | |
2ed4b548 | 1413 | return TARGET_XFER_E_IO; |
cf7a04e8 DJ |
1414 | break; |
1415 | ||
1416 | case MEM_WO: | |
1417 | if (readbuf != NULL) | |
2ed4b548 | 1418 | return TARGET_XFER_E_IO; |
cf7a04e8 | 1419 | break; |
a76d924d DJ |
1420 | |
1421 | case MEM_FLASH: | |
1422 | /* We only support writing to flash during "load" for now. */ | |
1423 | if (writebuf != NULL) | |
1424 | error (_("Writing to flash memory forbidden in this context")); | |
1425 | break; | |
4b5752d0 VP |
1426 | |
1427 | case MEM_NONE: | |
2ed4b548 | 1428 | return TARGET_XFER_E_IO; |
cf7a04e8 DJ |
1429 | } |
1430 | ||
6c95b8df PA |
1431 | if (!ptid_equal (inferior_ptid, null_ptid)) |
1432 | inf = find_inferior_pid (ptid_get_pid (inferior_ptid)); | |
1433 | else | |
1434 | inf = NULL; | |
4e5d721f DE |
1435 | |
1436 | if (inf != NULL | |
2f4d8875 PA |
1437 | /* The dcache reads whole cache lines; that doesn't play well |
1438 | with reading from a trace buffer, because reading outside of | |
1439 | the collected memory range fails. */ | |
1440 | && get_traceframe_number () == -1 | |
4e5d721f | 1441 | && (region->attrib.cache |
29453a14 YQ |
1442 | || (stack_cache_enabled_p () && object == TARGET_OBJECT_STACK_MEMORY) |
1443 | || (code_cache_enabled_p () && object == TARGET_OBJECT_CODE_MEMORY))) | |
cf7a04e8 | 1444 | { |
2a2f9fe4 | 1445 | DCACHE *dcache = target_dcache_get_or_init (); |
9b409511 | 1446 | int l; |
2a2f9fe4 | 1447 | |
cf7a04e8 | 1448 | if (readbuf != NULL) |
9b409511 | 1449 | l = dcache_xfer_memory (ops, dcache, memaddr, readbuf, reg_len, 0); |
cf7a04e8 DJ |
1450 | else |
1451 | /* FIXME drow/2006-08-09: If we're going to preserve const | |
1452 | correctness dcache_xfer_memory should take readbuf and | |
1453 | writebuf. */ | |
9b409511 | 1454 | l = dcache_xfer_memory (ops, dcache, memaddr, (void *) writebuf, |
cf7a04e8 | 1455 | reg_len, 1); |
9b409511 YQ |
1456 | if (l <= 0) |
1457 | return TARGET_XFER_E_IO; | |
cf7a04e8 | 1458 | else |
9b409511 YQ |
1459 | { |
1460 | *xfered_len = (ULONGEST) l; | |
1461 | return TARGET_XFER_OK; | |
1462 | } | |
cf7a04e8 DJ |
1463 | } |
1464 | ||
1465 | /* If none of those methods found the memory we wanted, fall back | |
1466 | to a target partial transfer. Normally a single call to | |
1467 | to_xfer_partial is enough; if it doesn't recognize an object | |
1468 | it will call the to_xfer_partial of the next target down. | |
1469 | But for memory this won't do. Memory is the only target | |
9b409511 YQ |
1470 | object which can be read from more than one valid target. |
1471 | A core file, for instance, could have some of memory but | |
1472 | delegate other bits to the target below it. So, we must | |
1473 | manually try all targets. */ | |
1474 | ||
1475 | res = raw_memory_xfer_partial (ops, readbuf, writebuf, memaddr, reg_len, | |
1476 | xfered_len); | |
cf7a04e8 | 1477 | |
41dcd03f DE |
1478 | /* Make sure the cache gets updated no matter what - if we are writing |
1479 | to the stack. Even if this write is not tagged as such, we still need | |
1480 | to update the cache. */ | |
1481 | ||
9b409511 | 1482 | if (res == TARGET_XFER_OK |
41dcd03f DE |
1483 | && inf != NULL |
1484 | && writebuf != NULL | |
f2de9785 | 1485 | && target_dcache_init_p () |
41dcd03f | 1486 | && !region->attrib.cache |
29453a14 YQ |
1487 | && ((stack_cache_enabled_p () && object != TARGET_OBJECT_STACK_MEMORY) |
1488 | || (code_cache_enabled_p () && object != TARGET_OBJECT_CODE_MEMORY))) | |
41dcd03f | 1489 | { |
f2de9785 | 1490 | DCACHE *dcache = target_dcache_get (); |
2a2f9fe4 | 1491 | |
9b409511 | 1492 | dcache_update (dcache, memaddr, (void *) writebuf, reg_len); |
41dcd03f DE |
1493 | } |
1494 | ||
cf7a04e8 DJ |
1495 | /* If we still haven't got anything, return the last error. We |
1496 | give up. */ | |
1497 | return res; | |
0779438d AC |
1498 | } |
1499 | ||
f0ba3972 PA |
1500 | /* Perform a partial memory transfer. For docs see target.h, |
1501 | to_xfer_partial. */ | |
1502 | ||
9b409511 | 1503 | static enum target_xfer_status |
f0ba3972 | 1504 | memory_xfer_partial (struct target_ops *ops, enum target_object object, |
9b409511 YQ |
1505 | gdb_byte *readbuf, const gdb_byte *writebuf, |
1506 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) | |
f0ba3972 | 1507 | { |
9b409511 | 1508 | enum target_xfer_status res; |
f0ba3972 PA |
1509 | |
1510 | /* Zero length requests are ok and require no work. */ | |
1511 | if (len == 0) | |
9b409511 | 1512 | return TARGET_XFER_EOF; |
f0ba3972 PA |
1513 | |
1514 | /* Fill in READBUF with breakpoint shadows, or WRITEBUF with | |
1515 | breakpoint insns, thus hiding out from higher layers whether | |
1516 | there are software breakpoints inserted in the code stream. */ | |
1517 | if (readbuf != NULL) | |
1518 | { | |
9b409511 YQ |
1519 | res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len, |
1520 | xfered_len); | |
f0ba3972 | 1521 | |
9b409511 | 1522 | if (res == TARGET_XFER_OK && !show_memory_breakpoints) |
f0ba3972 PA |
1523 | breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, res); |
1524 | } | |
1525 | else | |
1526 | { | |
1527 | void *buf; | |
1528 | struct cleanup *old_chain; | |
1529 | ||
67c059c2 AB |
1530 | /* A large write request is likely to be partially satisfied |
1531 | by memory_xfer_partial_1. We will continually malloc | |
1532 | and free a copy of the entire write request for breakpoint | |
1533 | shadow handling even though we only end up writing a small | |
1534 | subset of it. Cap writes to 4KB to mitigate this. */ | |
1535 | len = min (4096, len); | |
1536 | ||
f0ba3972 PA |
1537 | buf = xmalloc (len); |
1538 | old_chain = make_cleanup (xfree, buf); | |
1539 | memcpy (buf, writebuf, len); | |
1540 | ||
1541 | breakpoint_xfer_memory (NULL, buf, writebuf, memaddr, len); | |
9b409511 YQ |
1542 | res = memory_xfer_partial_1 (ops, object, NULL, buf, memaddr, len, |
1543 | xfered_len); | |
f0ba3972 PA |
1544 | |
1545 | do_cleanups (old_chain); | |
1546 | } | |
1547 | ||
1548 | return res; | |
1549 | } | |
1550 | ||
8defab1a DJ |
1551 | static void |
1552 | restore_show_memory_breakpoints (void *arg) | |
1553 | { | |
1554 | show_memory_breakpoints = (uintptr_t) arg; | |
1555 | } | |
1556 | ||
1557 | struct cleanup * | |
1558 | make_show_memory_breakpoints_cleanup (int show) | |
1559 | { | |
1560 | int current = show_memory_breakpoints; | |
8defab1a | 1561 | |
5d502164 | 1562 | show_memory_breakpoints = show; |
8defab1a DJ |
1563 | return make_cleanup (restore_show_memory_breakpoints, |
1564 | (void *) (uintptr_t) current); | |
1565 | } | |
1566 | ||
7f79c47e DE |
1567 | /* For docs see target.h, to_xfer_partial. */ |
1568 | ||
9b409511 | 1569 | enum target_xfer_status |
27394598 AC |
1570 | target_xfer_partial (struct target_ops *ops, |
1571 | enum target_object object, const char *annex, | |
4ac248ca | 1572 | gdb_byte *readbuf, const gdb_byte *writebuf, |
9b409511 YQ |
1573 | ULONGEST offset, ULONGEST len, |
1574 | ULONGEST *xfered_len) | |
27394598 | 1575 | { |
9b409511 | 1576 | enum target_xfer_status retval; |
27394598 AC |
1577 | |
1578 | gdb_assert (ops->to_xfer_partial != NULL); | |
cf7a04e8 | 1579 | |
ce6d0892 YQ |
1580 | /* Transfer is done when LEN is zero. */ |
1581 | if (len == 0) | |
9b409511 | 1582 | return TARGET_XFER_EOF; |
ce6d0892 | 1583 | |
d914c394 SS |
1584 | if (writebuf && !may_write_memory) |
1585 | error (_("Writing to memory is not allowed (addr %s, len %s)"), | |
1586 | core_addr_to_string_nz (offset), plongest (len)); | |
1587 | ||
9b409511 YQ |
1588 | *xfered_len = 0; |
1589 | ||
cf7a04e8 DJ |
1590 | /* If this is a memory transfer, let the memory-specific code |
1591 | have a look at it instead. Memory transfers are more | |
1592 | complicated. */ | |
29453a14 YQ |
1593 | if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY |
1594 | || object == TARGET_OBJECT_CODE_MEMORY) | |
4e5d721f | 1595 | retval = memory_xfer_partial (ops, object, readbuf, |
9b409511 | 1596 | writebuf, offset, len, xfered_len); |
9f713294 | 1597 | else if (object == TARGET_OBJECT_RAW_MEMORY) |
cf7a04e8 | 1598 | { |
9f713294 | 1599 | /* Request the normal memory object from other layers. */ |
9b409511 YQ |
1600 | retval = raw_memory_xfer_partial (ops, readbuf, writebuf, offset, len, |
1601 | xfered_len); | |
cf7a04e8 | 1602 | } |
9f713294 YQ |
1603 | else |
1604 | retval = ops->to_xfer_partial (ops, object, annex, readbuf, | |
9b409511 | 1605 | writebuf, offset, len, xfered_len); |
cf7a04e8 | 1606 | |
27394598 AC |
1607 | if (targetdebug) |
1608 | { | |
1609 | const unsigned char *myaddr = NULL; | |
1610 | ||
1611 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a | 1612 | "%s:target_xfer_partial " |
9b409511 | 1613 | "(%d, %s, %s, %s, %s, %s) = %d, %s", |
27394598 AC |
1614 | ops->to_shortname, |
1615 | (int) object, | |
1616 | (annex ? annex : "(null)"), | |
53b71562 JB |
1617 | host_address_to_string (readbuf), |
1618 | host_address_to_string (writebuf), | |
0b1553bc | 1619 | core_addr_to_string_nz (offset), |
9b409511 YQ |
1620 | pulongest (len), retval, |
1621 | pulongest (*xfered_len)); | |
27394598 AC |
1622 | |
1623 | if (readbuf) | |
1624 | myaddr = readbuf; | |
1625 | if (writebuf) | |
1626 | myaddr = writebuf; | |
9b409511 | 1627 | if (retval == TARGET_XFER_OK && myaddr != NULL) |
27394598 AC |
1628 | { |
1629 | int i; | |
2bc416ba | 1630 | |
27394598 | 1631 | fputs_unfiltered (", bytes =", gdb_stdlog); |
9b409511 | 1632 | for (i = 0; i < *xfered_len; i++) |
27394598 | 1633 | { |
53b71562 | 1634 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1635 | { |
1636 | if (targetdebug < 2 && i > 0) | |
1637 | { | |
1638 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
1639 | break; | |
1640 | } | |
1641 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1642 | } | |
2bc416ba | 1643 | |
27394598 AC |
1644 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
1645 | } | |
1646 | } | |
2bc416ba | 1647 | |
27394598 AC |
1648 | fputc_unfiltered ('\n', gdb_stdlog); |
1649 | } | |
9b409511 YQ |
1650 | |
1651 | /* Check implementations of to_xfer_partial update *XFERED_LEN | |
1652 | properly. Do assertion after printing debug messages, so that we | |
1653 | can find more clues on assertion failure from debugging messages. */ | |
1654 | if (retval == TARGET_XFER_OK || retval == TARGET_XFER_E_UNAVAILABLE) | |
1655 | gdb_assert (*xfered_len > 0); | |
1656 | ||
27394598 AC |
1657 | return retval; |
1658 | } | |
1659 | ||
578d3588 PA |
1660 | /* Read LEN bytes of target memory at address MEMADDR, placing the |
1661 | results in GDB's memory at MYADDR. Returns either 0 for success or | |
9b409511 | 1662 | TARGET_XFER_E_IO if any error occurs. |
c906108c SS |
1663 | |
1664 | If an error occurs, no guarantee is made about the contents of the data at | |
1665 | MYADDR. In particular, the caller should not depend upon partial reads | |
1666 | filling the buffer with good data. There is no way for the caller to know | |
1667 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 | 1668 | deal with partial reads should call target_read (which will retry until |
c378eb4e | 1669 | it makes no progress, and then return how much was transferred). */ |
c906108c SS |
1670 | |
1671 | int | |
1b162304 | 1672 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
c906108c | 1673 | { |
c35b1492 PA |
1674 | /* Dispatch to the topmost target, not the flattened current_target. |
1675 | Memory accesses check target->to_has_(all_)memory, and the | |
1676 | flattened target doesn't inherit those. */ | |
1677 | if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1678 | myaddr, memaddr, len) == len) |
1679 | return 0; | |
0779438d | 1680 | else |
578d3588 | 1681 | return TARGET_XFER_E_IO; |
c906108c SS |
1682 | } |
1683 | ||
aee4bf85 PA |
1684 | /* Like target_read_memory, but specify explicitly that this is a read |
1685 | from the target's raw memory. That is, this read bypasses the | |
1686 | dcache, breakpoint shadowing, etc. */ | |
1687 | ||
1688 | int | |
1689 | target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1690 | { | |
1691 | /* See comment in target_read_memory about why the request starts at | |
1692 | current_target.beneath. */ | |
1693 | if (target_read (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, | |
1694 | myaddr, memaddr, len) == len) | |
1695 | return 0; | |
1696 | else | |
1697 | return TARGET_XFER_E_IO; | |
1698 | } | |
1699 | ||
4e5d721f DE |
1700 | /* Like target_read_memory, but specify explicitly that this is a read from |
1701 | the target's stack. This may trigger different cache behavior. */ | |
1702 | ||
1703 | int | |
45aa4659 | 1704 | target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
4e5d721f | 1705 | { |
aee4bf85 PA |
1706 | /* See comment in target_read_memory about why the request starts at |
1707 | current_target.beneath. */ | |
4e5d721f DE |
1708 | if (target_read (current_target.beneath, TARGET_OBJECT_STACK_MEMORY, NULL, |
1709 | myaddr, memaddr, len) == len) | |
1710 | return 0; | |
1711 | else | |
578d3588 | 1712 | return TARGET_XFER_E_IO; |
4e5d721f DE |
1713 | } |
1714 | ||
29453a14 YQ |
1715 | /* Like target_read_memory, but specify explicitly that this is a read from |
1716 | the target's code. This may trigger different cache behavior. */ | |
1717 | ||
1718 | int | |
1719 | target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1720 | { | |
aee4bf85 PA |
1721 | /* See comment in target_read_memory about why the request starts at |
1722 | current_target.beneath. */ | |
29453a14 YQ |
1723 | if (target_read (current_target.beneath, TARGET_OBJECT_CODE_MEMORY, NULL, |
1724 | myaddr, memaddr, len) == len) | |
1725 | return 0; | |
1726 | else | |
1727 | return TARGET_XFER_E_IO; | |
1728 | } | |
1729 | ||
7f79c47e | 1730 | /* Write LEN bytes from MYADDR to target memory at address MEMADDR. |
9b409511 | 1731 | Returns either 0 for success or TARGET_XFER_E_IO if any |
578d3588 PA |
1732 | error occurs. If an error occurs, no guarantee is made about how |
1733 | much data got written. Callers that can deal with partial writes | |
1734 | should call target_write. */ | |
7f79c47e | 1735 | |
c906108c | 1736 | int |
45aa4659 | 1737 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
c906108c | 1738 | { |
aee4bf85 PA |
1739 | /* See comment in target_read_memory about why the request starts at |
1740 | current_target.beneath. */ | |
c35b1492 | 1741 | if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, |
cf7a04e8 DJ |
1742 | myaddr, memaddr, len) == len) |
1743 | return 0; | |
0779438d | 1744 | else |
578d3588 | 1745 | return TARGET_XFER_E_IO; |
c906108c | 1746 | } |
c5aa993b | 1747 | |
f0ba3972 | 1748 | /* Write LEN bytes from MYADDR to target raw memory at address |
9b409511 | 1749 | MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO |
578d3588 PA |
1750 | if any error occurs. If an error occurs, no guarantee is made |
1751 | about how much data got written. Callers that can deal with | |
1752 | partial writes should call target_write. */ | |
f0ba3972 PA |
1753 | |
1754 | int | |
45aa4659 | 1755 | target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
f0ba3972 | 1756 | { |
aee4bf85 PA |
1757 | /* See comment in target_read_memory about why the request starts at |
1758 | current_target.beneath. */ | |
f0ba3972 PA |
1759 | if (target_write (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, |
1760 | myaddr, memaddr, len) == len) | |
1761 | return 0; | |
1762 | else | |
578d3588 | 1763 | return TARGET_XFER_E_IO; |
f0ba3972 PA |
1764 | } |
1765 | ||
fd79ecee DJ |
1766 | /* Fetch the target's memory map. */ |
1767 | ||
1768 | VEC(mem_region_s) * | |
1769 | target_memory_map (void) | |
1770 | { | |
1771 | VEC(mem_region_s) *result; | |
1772 | struct mem_region *last_one, *this_one; | |
1773 | int ix; | |
1774 | struct target_ops *t; | |
1775 | ||
1776 | if (targetdebug) | |
1777 | fprintf_unfiltered (gdb_stdlog, "target_memory_map ()\n"); | |
1778 | ||
1779 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1780 | if (t->to_memory_map != NULL) | |
1781 | break; | |
1782 | ||
1783 | if (t == NULL) | |
1784 | return NULL; | |
1785 | ||
1786 | result = t->to_memory_map (t); | |
1787 | if (result == NULL) | |
1788 | return NULL; | |
1789 | ||
1790 | qsort (VEC_address (mem_region_s, result), | |
1791 | VEC_length (mem_region_s, result), | |
1792 | sizeof (struct mem_region), mem_region_cmp); | |
1793 | ||
1794 | /* Check that regions do not overlap. Simultaneously assign | |
1795 | a numbering for the "mem" commands to use to refer to | |
1796 | each region. */ | |
1797 | last_one = NULL; | |
1798 | for (ix = 0; VEC_iterate (mem_region_s, result, ix, this_one); ix++) | |
1799 | { | |
1800 | this_one->number = ix; | |
1801 | ||
1802 | if (last_one && last_one->hi > this_one->lo) | |
1803 | { | |
1804 | warning (_("Overlapping regions in memory map: ignoring")); | |
1805 | VEC_free (mem_region_s, result); | |
1806 | return NULL; | |
1807 | } | |
1808 | last_one = this_one; | |
1809 | } | |
1810 | ||
1811 | return result; | |
1812 | } | |
1813 | ||
a76d924d DJ |
1814 | void |
1815 | target_flash_erase (ULONGEST address, LONGEST length) | |
1816 | { | |
1817 | struct target_ops *t; | |
1818 | ||
1819 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1820 | if (t->to_flash_erase != NULL) | |
5d502164 MS |
1821 | { |
1822 | if (targetdebug) | |
1823 | fprintf_unfiltered (gdb_stdlog, "target_flash_erase (%s, %s)\n", | |
1824 | hex_string (address), phex (length, 0)); | |
1825 | t->to_flash_erase (t, address, length); | |
1826 | return; | |
1827 | } | |
a76d924d DJ |
1828 | |
1829 | tcomplain (); | |
1830 | } | |
1831 | ||
1832 | void | |
1833 | target_flash_done (void) | |
1834 | { | |
1835 | struct target_ops *t; | |
1836 | ||
1837 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1838 | if (t->to_flash_done != NULL) | |
5d502164 MS |
1839 | { |
1840 | if (targetdebug) | |
1841 | fprintf_unfiltered (gdb_stdlog, "target_flash_done\n"); | |
1842 | t->to_flash_done (t); | |
1843 | return; | |
1844 | } | |
a76d924d DJ |
1845 | |
1846 | tcomplain (); | |
1847 | } | |
1848 | ||
920d2a44 AC |
1849 | static void |
1850 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1851 | struct cmd_list_element *c, const char *value) | |
1852 | { | |
3e43a32a MS |
1853 | fprintf_filtered (file, |
1854 | _("Mode for reading from readonly sections is %s.\n"), | |
920d2a44 AC |
1855 | value); |
1856 | } | |
3a11626d | 1857 | |
1e3ff5ad AC |
1858 | /* More generic transfers. */ |
1859 | ||
9b409511 | 1860 | static enum target_xfer_status |
8aa91c1e | 1861 | default_xfer_partial (struct target_ops *ops, enum target_object object, |
2bc416ba | 1862 | const char *annex, gdb_byte *readbuf, |
9b409511 YQ |
1863 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, |
1864 | ULONGEST *xfered_len) | |
0088c768 AC |
1865 | { |
1866 | if (object == TARGET_OBJECT_MEMORY | |
c8e73a31 AC |
1867 | && ops->deprecated_xfer_memory != NULL) |
1868 | /* If available, fall back to the target's | |
1869 | "deprecated_xfer_memory" method. */ | |
0088c768 | 1870 | { |
4b8a223f | 1871 | int xfered = -1; |
5d502164 | 1872 | |
0088c768 | 1873 | errno = 0; |
4b8a223f AC |
1874 | if (writebuf != NULL) |
1875 | { | |
1876 | void *buffer = xmalloc (len); | |
1877 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |
5d502164 | 1878 | |
4b8a223f | 1879 | memcpy (buffer, writebuf, len); |
c8e73a31 AC |
1880 | xfered = ops->deprecated_xfer_memory (offset, buffer, len, |
1881 | 1/*write*/, NULL, ops); | |
4b8a223f AC |
1882 | do_cleanups (cleanup); |
1883 | } | |
1884 | if (readbuf != NULL) | |
244e85c8 MS |
1885 | xfered = ops->deprecated_xfer_memory (offset, readbuf, len, |
1886 | 0/*read*/, NULL, ops); | |
0088c768 | 1887 | if (xfered > 0) |
9b409511 YQ |
1888 | { |
1889 | *xfered_len = (ULONGEST) xfered; | |
1890 | return TARGET_XFER_E_IO; | |
1891 | } | |
0088c768 | 1892 | else if (xfered == 0 && errno == 0) |
c8e73a31 AC |
1893 | /* "deprecated_xfer_memory" uses 0, cross checked against |
1894 | ERRNO as one indication of an error. */ | |
9b409511 | 1895 | return TARGET_XFER_EOF; |
0088c768 | 1896 | else |
9b409511 | 1897 | return TARGET_XFER_E_IO; |
0088c768 | 1898 | } |
0088c768 | 1899 | else |
6b84065d TT |
1900 | { |
1901 | gdb_assert (ops->beneath != NULL); | |
1902 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, | |
1903 | readbuf, writebuf, offset, len, | |
1904 | xfered_len); | |
1905 | } | |
0088c768 AC |
1906 | } |
1907 | ||
7f79c47e | 1908 | /* Target vector read/write partial wrapper functions. */ |
0088c768 | 1909 | |
9b409511 | 1910 | static enum target_xfer_status |
1e3ff5ad AC |
1911 | target_read_partial (struct target_ops *ops, |
1912 | enum target_object object, | |
1b0ba102 | 1913 | const char *annex, gdb_byte *buf, |
9b409511 YQ |
1914 | ULONGEST offset, ULONGEST len, |
1915 | ULONGEST *xfered_len) | |
1e3ff5ad | 1916 | { |
9b409511 YQ |
1917 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len, |
1918 | xfered_len); | |
1e3ff5ad AC |
1919 | } |
1920 | ||
8a55ffb0 | 1921 | static enum target_xfer_status |
1e3ff5ad AC |
1922 | target_write_partial (struct target_ops *ops, |
1923 | enum target_object object, | |
1b0ba102 | 1924 | const char *annex, const gdb_byte *buf, |
9b409511 | 1925 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len) |
1e3ff5ad | 1926 | { |
9b409511 YQ |
1927 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len, |
1928 | xfered_len); | |
1e3ff5ad AC |
1929 | } |
1930 | ||
1931 | /* Wrappers to perform the full transfer. */ | |
7f79c47e DE |
1932 | |
1933 | /* For docs on target_read see target.h. */ | |
1934 | ||
1e3ff5ad AC |
1935 | LONGEST |
1936 | target_read (struct target_ops *ops, | |
1937 | enum target_object object, | |
1b0ba102 | 1938 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1939 | ULONGEST offset, LONGEST len) |
1940 | { | |
1941 | LONGEST xfered = 0; | |
5d502164 | 1942 | |
1e3ff5ad AC |
1943 | while (xfered < len) |
1944 | { | |
9b409511 YQ |
1945 | ULONGEST xfered_len; |
1946 | enum target_xfer_status status; | |
1947 | ||
1948 | status = target_read_partial (ops, object, annex, | |
1949 | (gdb_byte *) buf + xfered, | |
1950 | offset + xfered, len - xfered, | |
1951 | &xfered_len); | |
5d502164 | 1952 | |
1e3ff5ad | 1953 | /* Call an observer, notifying them of the xfer progress? */ |
9b409511 | 1954 | if (status == TARGET_XFER_EOF) |
13547ab6 | 1955 | return xfered; |
9b409511 YQ |
1956 | else if (status == TARGET_XFER_OK) |
1957 | { | |
1958 | xfered += xfered_len; | |
1959 | QUIT; | |
1960 | } | |
1961 | else | |
0088c768 | 1962 | return -1; |
9b409511 | 1963 | |
1e3ff5ad AC |
1964 | } |
1965 | return len; | |
1966 | } | |
1967 | ||
f1a507a1 JB |
1968 | /* Assuming that the entire [begin, end) range of memory cannot be |
1969 | read, try to read whatever subrange is possible to read. | |
1970 | ||
1971 | The function returns, in RESULT, either zero or one memory block. | |
1972 | If there's a readable subrange at the beginning, it is completely | |
1973 | read and returned. Any further readable subrange will not be read. | |
1974 | Otherwise, if there's a readable subrange at the end, it will be | |
1975 | completely read and returned. Any readable subranges before it | |
1976 | (obviously, not starting at the beginning), will be ignored. In | |
1977 | other cases -- either no readable subrange, or readable subrange(s) | |
1978 | that is neither at the beginning, or end, nothing is returned. | |
1979 | ||
1980 | The purpose of this function is to handle a read across a boundary | |
1981 | of accessible memory in a case when memory map is not available. | |
1982 | The above restrictions are fine for this case, but will give | |
1983 | incorrect results if the memory is 'patchy'. However, supporting | |
1984 | 'patchy' memory would require trying to read every single byte, | |
1985 | and it seems unacceptable solution. Explicit memory map is | |
1986 | recommended for this case -- and target_read_memory_robust will | |
1987 | take care of reading multiple ranges then. */ | |
8dedea02 VP |
1988 | |
1989 | static void | |
3e43a32a MS |
1990 | read_whatever_is_readable (struct target_ops *ops, |
1991 | ULONGEST begin, ULONGEST end, | |
8dedea02 | 1992 | VEC(memory_read_result_s) **result) |
d5086790 | 1993 | { |
f1a507a1 | 1994 | gdb_byte *buf = xmalloc (end - begin); |
8dedea02 VP |
1995 | ULONGEST current_begin = begin; |
1996 | ULONGEST current_end = end; | |
1997 | int forward; | |
1998 | memory_read_result_s r; | |
9b409511 | 1999 | ULONGEST xfered_len; |
8dedea02 VP |
2000 | |
2001 | /* If we previously failed to read 1 byte, nothing can be done here. */ | |
2002 | if (end - begin <= 1) | |
13b3fd9b MS |
2003 | { |
2004 | xfree (buf); | |
2005 | return; | |
2006 | } | |
8dedea02 VP |
2007 | |
2008 | /* Check that either first or the last byte is readable, and give up | |
c378eb4e | 2009 | if not. This heuristic is meant to permit reading accessible memory |
8dedea02 VP |
2010 | at the boundary of accessible region. */ |
2011 | if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 | 2012 | buf, begin, 1, &xfered_len) == TARGET_XFER_OK) |
8dedea02 VP |
2013 | { |
2014 | forward = 1; | |
2015 | ++current_begin; | |
2016 | } | |
2017 | else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 YQ |
2018 | buf + (end-begin) - 1, end - 1, 1, |
2019 | &xfered_len) == TARGET_XFER_OK) | |
8dedea02 VP |
2020 | { |
2021 | forward = 0; | |
2022 | --current_end; | |
2023 | } | |
2024 | else | |
2025 | { | |
13b3fd9b | 2026 | xfree (buf); |
8dedea02 VP |
2027 | return; |
2028 | } | |
2029 | ||
2030 | /* Loop invariant is that the [current_begin, current_end) was previously | |
2031 | found to be not readable as a whole. | |
2032 | ||
2033 | Note loop condition -- if the range has 1 byte, we can't divide the range | |
2034 | so there's no point trying further. */ | |
2035 | while (current_end - current_begin > 1) | |
2036 | { | |
2037 | ULONGEST first_half_begin, first_half_end; | |
2038 | ULONGEST second_half_begin, second_half_end; | |
2039 | LONGEST xfer; | |
8dedea02 | 2040 | ULONGEST middle = current_begin + (current_end - current_begin)/2; |
f1a507a1 | 2041 | |
8dedea02 VP |
2042 | if (forward) |
2043 | { | |
2044 | first_half_begin = current_begin; | |
2045 | first_half_end = middle; | |
2046 | second_half_begin = middle; | |
2047 | second_half_end = current_end; | |
2048 | } | |
2049 | else | |
2050 | { | |
2051 | first_half_begin = middle; | |
2052 | first_half_end = current_end; | |
2053 | second_half_begin = current_begin; | |
2054 | second_half_end = middle; | |
2055 | } | |
2056 | ||
2057 | xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2058 | buf + (first_half_begin - begin), | |
2059 | first_half_begin, | |
2060 | first_half_end - first_half_begin); | |
2061 | ||
2062 | if (xfer == first_half_end - first_half_begin) | |
2063 | { | |
c378eb4e | 2064 | /* This half reads up fine. So, the error must be in the |
3e43a32a | 2065 | other half. */ |
8dedea02 VP |
2066 | current_begin = second_half_begin; |
2067 | current_end = second_half_end; | |
2068 | } | |
2069 | else | |
2070 | { | |
c378eb4e MS |
2071 | /* This half is not readable. Because we've tried one byte, we |
2072 | know some part of this half if actually redable. Go to the next | |
8dedea02 VP |
2073 | iteration to divide again and try to read. |
2074 | ||
2075 | We don't handle the other half, because this function only tries | |
2076 | to read a single readable subrange. */ | |
2077 | current_begin = first_half_begin; | |
2078 | current_end = first_half_end; | |
2079 | } | |
2080 | } | |
2081 | ||
2082 | if (forward) | |
2083 | { | |
2084 | /* The [begin, current_begin) range has been read. */ | |
2085 | r.begin = begin; | |
2086 | r.end = current_begin; | |
2087 | r.data = buf; | |
2088 | } | |
2089 | else | |
2090 | { | |
2091 | /* The [current_end, end) range has been read. */ | |
2092 | LONGEST rlen = end - current_end; | |
f1a507a1 | 2093 | |
8dedea02 VP |
2094 | r.data = xmalloc (rlen); |
2095 | memcpy (r.data, buf + current_end - begin, rlen); | |
2096 | r.begin = current_end; | |
2097 | r.end = end; | |
2098 | xfree (buf); | |
2099 | } | |
2100 | VEC_safe_push(memory_read_result_s, (*result), &r); | |
2101 | } | |
2102 | ||
2103 | void | |
2104 | free_memory_read_result_vector (void *x) | |
2105 | { | |
2106 | VEC(memory_read_result_s) *v = x; | |
2107 | memory_read_result_s *current; | |
2108 | int ix; | |
2109 | ||
2110 | for (ix = 0; VEC_iterate (memory_read_result_s, v, ix, current); ++ix) | |
2111 | { | |
2112 | xfree (current->data); | |
2113 | } | |
2114 | VEC_free (memory_read_result_s, v); | |
2115 | } | |
2116 | ||
2117 | VEC(memory_read_result_s) * | |
2118 | read_memory_robust (struct target_ops *ops, ULONGEST offset, LONGEST len) | |
2119 | { | |
2120 | VEC(memory_read_result_s) *result = 0; | |
2121 | ||
2122 | LONGEST xfered = 0; | |
d5086790 VP |
2123 | while (xfered < len) |
2124 | { | |
8dedea02 VP |
2125 | struct mem_region *region = lookup_mem_region (offset + xfered); |
2126 | LONGEST rlen; | |
5d502164 | 2127 | |
8dedea02 VP |
2128 | /* If there is no explicit region, a fake one should be created. */ |
2129 | gdb_assert (region); | |
2130 | ||
2131 | if (region->hi == 0) | |
2132 | rlen = len - xfered; | |
2133 | else | |
2134 | rlen = region->hi - offset; | |
2135 | ||
2136 | if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO) | |
d5086790 | 2137 | { |
c378eb4e | 2138 | /* Cannot read this region. Note that we can end up here only |
8dedea02 VP |
2139 | if the region is explicitly marked inaccessible, or |
2140 | 'inaccessible-by-default' is in effect. */ | |
2141 | xfered += rlen; | |
2142 | } | |
2143 | else | |
2144 | { | |
2145 | LONGEST to_read = min (len - xfered, rlen); | |
2146 | gdb_byte *buffer = (gdb_byte *)xmalloc (to_read); | |
2147 | ||
2148 | LONGEST xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2149 | (gdb_byte *) buffer, | |
2150 | offset + xfered, to_read); | |
2151 | /* Call an observer, notifying them of the xfer progress? */ | |
d5086790 | 2152 | if (xfer <= 0) |
d5086790 | 2153 | { |
c378eb4e | 2154 | /* Got an error reading full chunk. See if maybe we can read |
8dedea02 VP |
2155 | some subrange. */ |
2156 | xfree (buffer); | |
3e43a32a MS |
2157 | read_whatever_is_readable (ops, offset + xfered, |
2158 | offset + xfered + to_read, &result); | |
8dedea02 | 2159 | xfered += to_read; |
d5086790 | 2160 | } |
8dedea02 VP |
2161 | else |
2162 | { | |
2163 | struct memory_read_result r; | |
2164 | r.data = buffer; | |
2165 | r.begin = offset + xfered; | |
2166 | r.end = r.begin + xfer; | |
2167 | VEC_safe_push (memory_read_result_s, result, &r); | |
2168 | xfered += xfer; | |
2169 | } | |
2170 | QUIT; | |
d5086790 | 2171 | } |
d5086790 | 2172 | } |
8dedea02 | 2173 | return result; |
d5086790 VP |
2174 | } |
2175 | ||
8dedea02 | 2176 | |
cf7a04e8 DJ |
2177 | /* An alternative to target_write with progress callbacks. */ |
2178 | ||
1e3ff5ad | 2179 | LONGEST |
cf7a04e8 DJ |
2180 | target_write_with_progress (struct target_ops *ops, |
2181 | enum target_object object, | |
2182 | const char *annex, const gdb_byte *buf, | |
2183 | ULONGEST offset, LONGEST len, | |
2184 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad AC |
2185 | { |
2186 | LONGEST xfered = 0; | |
a76d924d DJ |
2187 | |
2188 | /* Give the progress callback a chance to set up. */ | |
2189 | if (progress) | |
2190 | (*progress) (0, baton); | |
2191 | ||
1e3ff5ad AC |
2192 | while (xfered < len) |
2193 | { | |
9b409511 YQ |
2194 | ULONGEST xfered_len; |
2195 | enum target_xfer_status status; | |
2196 | ||
2197 | status = target_write_partial (ops, object, annex, | |
2198 | (gdb_byte *) buf + xfered, | |
2199 | offset + xfered, len - xfered, | |
2200 | &xfered_len); | |
cf7a04e8 | 2201 | |
9b409511 | 2202 | if (status == TARGET_XFER_EOF) |
13547ab6 | 2203 | return xfered; |
9b409511 | 2204 | if (TARGET_XFER_STATUS_ERROR_P (status)) |
0088c768 | 2205 | return -1; |
cf7a04e8 | 2206 | |
9b409511 | 2207 | gdb_assert (status == TARGET_XFER_OK); |
cf7a04e8 | 2208 | if (progress) |
9b409511 | 2209 | (*progress) (xfered_len, baton); |
cf7a04e8 | 2210 | |
9b409511 | 2211 | xfered += xfered_len; |
1e3ff5ad AC |
2212 | QUIT; |
2213 | } | |
2214 | return len; | |
2215 | } | |
2216 | ||
7f79c47e DE |
2217 | /* For docs on target_write see target.h. */ |
2218 | ||
cf7a04e8 DJ |
2219 | LONGEST |
2220 | target_write (struct target_ops *ops, | |
2221 | enum target_object object, | |
2222 | const char *annex, const gdb_byte *buf, | |
2223 | ULONGEST offset, LONGEST len) | |
2224 | { | |
2225 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
2226 | NULL, NULL); | |
2227 | } | |
2228 | ||
159f81f3 DJ |
2229 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
2230 | the size of the transferred data. PADDING additional bytes are | |
2231 | available in *BUF_P. This is a helper function for | |
2232 | target_read_alloc; see the declaration of that function for more | |
2233 | information. */ | |
13547ab6 | 2234 | |
159f81f3 DJ |
2235 | static LONGEST |
2236 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, | |
2237 | const char *annex, gdb_byte **buf_p, int padding) | |
13547ab6 DJ |
2238 | { |
2239 | size_t buf_alloc, buf_pos; | |
2240 | gdb_byte *buf; | |
13547ab6 DJ |
2241 | |
2242 | /* This function does not have a length parameter; it reads the | |
2243 | entire OBJECT). Also, it doesn't support objects fetched partly | |
2244 | from one target and partly from another (in a different stratum, | |
2245 | e.g. a core file and an executable). Both reasons make it | |
2246 | unsuitable for reading memory. */ | |
2247 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
2248 | ||
2249 | /* Start by reading up to 4K at a time. The target will throttle | |
2250 | this number down if necessary. */ | |
2251 | buf_alloc = 4096; | |
2252 | buf = xmalloc (buf_alloc); | |
2253 | buf_pos = 0; | |
2254 | while (1) | |
2255 | { | |
9b409511 YQ |
2256 | ULONGEST xfered_len; |
2257 | enum target_xfer_status status; | |
2258 | ||
2259 | status = target_read_partial (ops, object, annex, &buf[buf_pos], | |
2260 | buf_pos, buf_alloc - buf_pos - padding, | |
2261 | &xfered_len); | |
2262 | ||
2263 | if (status == TARGET_XFER_EOF) | |
13547ab6 DJ |
2264 | { |
2265 | /* Read all there was. */ | |
2266 | if (buf_pos == 0) | |
2267 | xfree (buf); | |
2268 | else | |
2269 | *buf_p = buf; | |
2270 | return buf_pos; | |
2271 | } | |
9b409511 YQ |
2272 | else if (status != TARGET_XFER_OK) |
2273 | { | |
2274 | /* An error occurred. */ | |
2275 | xfree (buf); | |
2276 | return TARGET_XFER_E_IO; | |
2277 | } | |
13547ab6 | 2278 | |
9b409511 | 2279 | buf_pos += xfered_len; |
13547ab6 DJ |
2280 | |
2281 | /* If the buffer is filling up, expand it. */ | |
2282 | if (buf_alloc < buf_pos * 2) | |
2283 | { | |
2284 | buf_alloc *= 2; | |
2285 | buf = xrealloc (buf, buf_alloc); | |
2286 | } | |
2287 | ||
2288 | QUIT; | |
2289 | } | |
2290 | } | |
2291 | ||
159f81f3 DJ |
2292 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
2293 | the size of the transferred data. See the declaration in "target.h" | |
2294 | function for more information about the return value. */ | |
2295 | ||
2296 | LONGEST | |
2297 | target_read_alloc (struct target_ops *ops, enum target_object object, | |
2298 | const char *annex, gdb_byte **buf_p) | |
2299 | { | |
2300 | return target_read_alloc_1 (ops, object, annex, buf_p, 0); | |
2301 | } | |
2302 | ||
2303 | /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and | |
2304 | returned as a string, allocated using xmalloc. If an error occurs | |
2305 | or the transfer is unsupported, NULL is returned. Empty objects | |
2306 | are returned as allocated but empty strings. A warning is issued | |
2307 | if the result contains any embedded NUL bytes. */ | |
2308 | ||
2309 | char * | |
2310 | target_read_stralloc (struct target_ops *ops, enum target_object object, | |
2311 | const char *annex) | |
2312 | { | |
39086a0e PA |
2313 | gdb_byte *buffer; |
2314 | char *bufstr; | |
7313baad | 2315 | LONGEST i, transferred; |
159f81f3 | 2316 | |
39086a0e PA |
2317 | transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1); |
2318 | bufstr = (char *) buffer; | |
159f81f3 DJ |
2319 | |
2320 | if (transferred < 0) | |
2321 | return NULL; | |
2322 | ||
2323 | if (transferred == 0) | |
2324 | return xstrdup (""); | |
2325 | ||
39086a0e | 2326 | bufstr[transferred] = 0; |
7313baad UW |
2327 | |
2328 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
39086a0e PA |
2329 | for (i = strlen (bufstr); i < transferred; i++) |
2330 | if (bufstr[i] != 0) | |
7313baad UW |
2331 | { |
2332 | warning (_("target object %d, annex %s, " | |
2333 | "contained unexpected null characters"), | |
2334 | (int) object, annex ? annex : "(none)"); | |
2335 | break; | |
2336 | } | |
159f81f3 | 2337 | |
39086a0e | 2338 | return bufstr; |
159f81f3 DJ |
2339 | } |
2340 | ||
b6591e8b AC |
2341 | /* Memory transfer methods. */ |
2342 | ||
2343 | void | |
1b0ba102 | 2344 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
2345 | LONGEST len) |
2346 | { | |
07b82ea5 PA |
2347 | /* This method is used to read from an alternate, non-current |
2348 | target. This read must bypass the overlay support (as symbols | |
2349 | don't match this target), and GDB's internal cache (wrong cache | |
2350 | for this target). */ | |
2351 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) | |
b6591e8b | 2352 | != len) |
578d3588 | 2353 | memory_error (TARGET_XFER_E_IO, addr); |
b6591e8b AC |
2354 | } |
2355 | ||
2356 | ULONGEST | |
5d502164 MS |
2357 | get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr, |
2358 | int len, enum bfd_endian byte_order) | |
b6591e8b | 2359 | { |
f6519ebc | 2360 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
2361 | |
2362 | gdb_assert (len <= sizeof (buf)); | |
2363 | get_target_memory (ops, addr, buf, len); | |
e17a4113 | 2364 | return extract_unsigned_integer (buf, len, byte_order); |
b6591e8b AC |
2365 | } |
2366 | ||
3db08215 MM |
2367 | /* See target.h. */ |
2368 | ||
d914c394 SS |
2369 | int |
2370 | target_insert_breakpoint (struct gdbarch *gdbarch, | |
2371 | struct bp_target_info *bp_tgt) | |
2372 | { | |
2373 | if (!may_insert_breakpoints) | |
2374 | { | |
2375 | warning (_("May not insert breakpoints")); | |
2376 | return 1; | |
2377 | } | |
2378 | ||
6b84065d TT |
2379 | return current_target.to_insert_breakpoint (¤t_target, |
2380 | gdbarch, bp_tgt); | |
d914c394 SS |
2381 | } |
2382 | ||
3db08215 MM |
2383 | /* See target.h. */ |
2384 | ||
d914c394 | 2385 | int |
6b84065d TT |
2386 | target_remove_breakpoint (struct gdbarch *gdbarch, |
2387 | struct bp_target_info *bp_tgt) | |
d914c394 SS |
2388 | { |
2389 | /* This is kind of a weird case to handle, but the permission might | |
2390 | have been changed after breakpoints were inserted - in which case | |
2391 | we should just take the user literally and assume that any | |
2392 | breakpoints should be left in place. */ | |
2393 | if (!may_insert_breakpoints) | |
2394 | { | |
2395 | warning (_("May not remove breakpoints")); | |
2396 | return 1; | |
2397 | } | |
2398 | ||
6b84065d TT |
2399 | return current_target.to_remove_breakpoint (¤t_target, |
2400 | gdbarch, bp_tgt); | |
d914c394 SS |
2401 | } |
2402 | ||
c906108c | 2403 | static void |
fba45db2 | 2404 | target_info (char *args, int from_tty) |
c906108c SS |
2405 | { |
2406 | struct target_ops *t; | |
c906108c | 2407 | int has_all_mem = 0; |
c5aa993b | 2408 | |
c906108c | 2409 | if (symfile_objfile != NULL) |
4262abfb JK |
2410 | printf_unfiltered (_("Symbols from \"%s\".\n"), |
2411 | objfile_name (symfile_objfile)); | |
c906108c | 2412 | |
258b763a | 2413 | for (t = target_stack; t != NULL; t = t->beneath) |
c906108c | 2414 | { |
c35b1492 | 2415 | if (!(*t->to_has_memory) (t)) |
c906108c SS |
2416 | continue; |
2417 | ||
c5aa993b | 2418 | if ((int) (t->to_stratum) <= (int) dummy_stratum) |
c906108c SS |
2419 | continue; |
2420 | if (has_all_mem) | |
3e43a32a MS |
2421 | printf_unfiltered (_("\tWhile running this, " |
2422 | "GDB does not access memory from...\n")); | |
c5aa993b JM |
2423 | printf_unfiltered ("%s:\n", t->to_longname); |
2424 | (t->to_files_info) (t); | |
c35b1492 | 2425 | has_all_mem = (*t->to_has_all_memory) (t); |
c906108c SS |
2426 | } |
2427 | } | |
2428 | ||
fd79ecee DJ |
2429 | /* This function is called before any new inferior is created, e.g. |
2430 | by running a program, attaching, or connecting to a target. | |
2431 | It cleans up any state from previous invocations which might | |
2432 | change between runs. This is a subset of what target_preopen | |
2433 | resets (things which might change between targets). */ | |
2434 | ||
2435 | void | |
2436 | target_pre_inferior (int from_tty) | |
2437 | { | |
c378eb4e | 2438 | /* Clear out solib state. Otherwise the solib state of the previous |
b9db4ced | 2439 | inferior might have survived and is entirely wrong for the new |
c378eb4e | 2440 | target. This has been observed on GNU/Linux using glibc 2.3. How |
b9db4ced UW |
2441 | to reproduce: |
2442 | ||
2443 | bash$ ./foo& | |
2444 | [1] 4711 | |
2445 | bash$ ./foo& | |
2446 | [1] 4712 | |
2447 | bash$ gdb ./foo | |
2448 | [...] | |
2449 | (gdb) attach 4711 | |
2450 | (gdb) detach | |
2451 | (gdb) attach 4712 | |
2452 | Cannot access memory at address 0xdeadbeef | |
2453 | */ | |
b9db4ced | 2454 | |
50c71eaf PA |
2455 | /* In some OSs, the shared library list is the same/global/shared |
2456 | across inferiors. If code is shared between processes, so are | |
2457 | memory regions and features. */ | |
f5656ead | 2458 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
50c71eaf PA |
2459 | { |
2460 | no_shared_libraries (NULL, from_tty); | |
2461 | ||
2462 | invalidate_target_mem_regions (); | |
424163ea | 2463 | |
50c71eaf PA |
2464 | target_clear_description (); |
2465 | } | |
8ffcbaaf YQ |
2466 | |
2467 | agent_capability_invalidate (); | |
fd79ecee DJ |
2468 | } |
2469 | ||
b8fa0bfa PA |
2470 | /* Callback for iterate_over_inferiors. Gets rid of the given |
2471 | inferior. */ | |
2472 | ||
2473 | static int | |
2474 | dispose_inferior (struct inferior *inf, void *args) | |
2475 | { | |
2476 | struct thread_info *thread; | |
2477 | ||
2478 | thread = any_thread_of_process (inf->pid); | |
2479 | if (thread) | |
2480 | { | |
2481 | switch_to_thread (thread->ptid); | |
2482 | ||
2483 | /* Core inferiors actually should be detached, not killed. */ | |
2484 | if (target_has_execution) | |
2485 | target_kill (); | |
2486 | else | |
2487 | target_detach (NULL, 0); | |
2488 | } | |
2489 | ||
2490 | return 0; | |
2491 | } | |
2492 | ||
c906108c SS |
2493 | /* This is to be called by the open routine before it does |
2494 | anything. */ | |
2495 | ||
2496 | void | |
fba45db2 | 2497 | target_preopen (int from_tty) |
c906108c | 2498 | { |
c5aa993b | 2499 | dont_repeat (); |
c906108c | 2500 | |
b8fa0bfa | 2501 | if (have_inferiors ()) |
c5aa993b | 2502 | { |
adf40b2e | 2503 | if (!from_tty |
b8fa0bfa PA |
2504 | || !have_live_inferiors () |
2505 | || query (_("A program is being debugged already. Kill it? "))) | |
2506 | iterate_over_inferiors (dispose_inferior, NULL); | |
c906108c | 2507 | else |
8a3fe4f8 | 2508 | error (_("Program not killed.")); |
c906108c SS |
2509 | } |
2510 | ||
2511 | /* Calling target_kill may remove the target from the stack. But if | |
2512 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
2513 | /* Leave the exec target, though. The user may be switching from a |
2514 | live process to a core of the same program. */ | |
460014f5 | 2515 | pop_all_targets_above (file_stratum); |
fd79ecee DJ |
2516 | |
2517 | target_pre_inferior (from_tty); | |
c906108c SS |
2518 | } |
2519 | ||
2520 | /* Detach a target after doing deferred register stores. */ | |
2521 | ||
2522 | void | |
52554a0e | 2523 | target_detach (const char *args, int from_tty) |
c906108c | 2524 | { |
136d6dae VP |
2525 | struct target_ops* t; |
2526 | ||
f5656ead | 2527 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
2528 | /* Don't remove global breakpoints here. They're removed on |
2529 | disconnection from the target. */ | |
2530 | ; | |
2531 | else | |
2532 | /* If we're in breakpoints-always-inserted mode, have to remove | |
2533 | them before detaching. */ | |
dfd4cc63 | 2534 | remove_breakpoints_pid (ptid_get_pid (inferior_ptid)); |
74960c60 | 2535 | |
24291992 PA |
2536 | prepare_for_detach (); |
2537 | ||
09da0d0a TT |
2538 | current_target.to_detach (¤t_target, args, from_tty); |
2539 | if (targetdebug) | |
2540 | fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n", | |
2541 | args, from_tty); | |
c906108c SS |
2542 | } |
2543 | ||
6ad8ae5c DJ |
2544 | void |
2545 | target_disconnect (char *args, int from_tty) | |
2546 | { | |
597320e7 DJ |
2547 | struct target_ops *t; |
2548 | ||
50c71eaf PA |
2549 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
2550 | are global across processes, we have to remove them before | |
2551 | disconnecting. */ | |
74960c60 VP |
2552 | remove_breakpoints (); |
2553 | ||
597320e7 DJ |
2554 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2555 | if (t->to_disconnect != NULL) | |
2556 | { | |
2557 | if (targetdebug) | |
2558 | fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n", | |
2559 | args, from_tty); | |
2560 | t->to_disconnect (t, args, from_tty); | |
2561 | return; | |
2562 | } | |
2563 | ||
2564 | tcomplain (); | |
6ad8ae5c DJ |
2565 | } |
2566 | ||
117de6a9 | 2567 | ptid_t |
47608cb1 | 2568 | target_wait (ptid_t ptid, struct target_waitstatus *status, int options) |
117de6a9 PA |
2569 | { |
2570 | struct target_ops *t; | |
6b84065d TT |
2571 | ptid_t retval = (current_target.to_wait) (¤t_target, ptid, |
2572 | status, options); | |
117de6a9 | 2573 | |
6b84065d | 2574 | if (targetdebug) |
117de6a9 | 2575 | { |
6b84065d TT |
2576 | char *status_string; |
2577 | char *options_string; | |
117de6a9 | 2578 | |
6b84065d TT |
2579 | status_string = target_waitstatus_to_string (status); |
2580 | options_string = target_options_to_string (options); | |
2581 | fprintf_unfiltered (gdb_stdlog, | |
2582 | "target_wait (%d, status, options={%s})" | |
2583 | " = %d, %s\n", | |
2584 | ptid_get_pid (ptid), options_string, | |
2585 | ptid_get_pid (retval), status_string); | |
2586 | xfree (status_string); | |
2587 | xfree (options_string); | |
117de6a9 PA |
2588 | } |
2589 | ||
6b84065d | 2590 | return retval; |
117de6a9 PA |
2591 | } |
2592 | ||
2593 | char * | |
2594 | target_pid_to_str (ptid_t ptid) | |
2595 | { | |
2596 | struct target_ops *t; | |
2597 | ||
2598 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2599 | { | |
2600 | if (t->to_pid_to_str != NULL) | |
2601 | return (*t->to_pid_to_str) (t, ptid); | |
2602 | } | |
2603 | ||
2604 | return normal_pid_to_str (ptid); | |
2605 | } | |
2606 | ||
4694da01 TT |
2607 | char * |
2608 | target_thread_name (struct thread_info *info) | |
2609 | { | |
825828fc | 2610 | return current_target.to_thread_name (¤t_target, info); |
4694da01 TT |
2611 | } |
2612 | ||
e1ac3328 | 2613 | void |
2ea28649 | 2614 | target_resume (ptid_t ptid, int step, enum gdb_signal signal) |
e1ac3328 | 2615 | { |
28439f5e PA |
2616 | struct target_ops *t; |
2617 | ||
4e5d721f | 2618 | target_dcache_invalidate (); |
28439f5e | 2619 | |
6b84065d TT |
2620 | current_target.to_resume (¤t_target, ptid, step, signal); |
2621 | if (targetdebug) | |
2622 | fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n", | |
2623 | ptid_get_pid (ptid), | |
2624 | step ? "step" : "continue", | |
2625 | gdb_signal_to_name (signal)); | |
28439f5e | 2626 | |
6b84065d TT |
2627 | registers_changed_ptid (ptid); |
2628 | set_executing (ptid, 1); | |
2629 | set_running (ptid, 1); | |
2630 | clear_inline_frame_state (ptid); | |
e1ac3328 | 2631 | } |
2455069d UW |
2632 | |
2633 | void | |
2634 | target_pass_signals (int numsigs, unsigned char *pass_signals) | |
2635 | { | |
2636 | struct target_ops *t; | |
2637 | ||
2638 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2639 | { | |
2640 | if (t->to_pass_signals != NULL) | |
2641 | { | |
2642 | if (targetdebug) | |
2643 | { | |
2644 | int i; | |
2645 | ||
2646 | fprintf_unfiltered (gdb_stdlog, "target_pass_signals (%d, {", | |
2647 | numsigs); | |
2648 | ||
2649 | for (i = 0; i < numsigs; i++) | |
2650 | if (pass_signals[i]) | |
2651 | fprintf_unfiltered (gdb_stdlog, " %s", | |
2ea28649 | 2652 | gdb_signal_to_name (i)); |
2455069d UW |
2653 | |
2654 | fprintf_unfiltered (gdb_stdlog, " })\n"); | |
2655 | } | |
2656 | ||
94bedb42 | 2657 | (*t->to_pass_signals) (t, numsigs, pass_signals); |
2455069d UW |
2658 | return; |
2659 | } | |
2660 | } | |
2661 | } | |
2662 | ||
9b224c5e PA |
2663 | void |
2664 | target_program_signals (int numsigs, unsigned char *program_signals) | |
2665 | { | |
2666 | struct target_ops *t; | |
2667 | ||
2668 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2669 | { | |
2670 | if (t->to_program_signals != NULL) | |
2671 | { | |
2672 | if (targetdebug) | |
2673 | { | |
2674 | int i; | |
2675 | ||
2676 | fprintf_unfiltered (gdb_stdlog, "target_program_signals (%d, {", | |
2677 | numsigs); | |
2678 | ||
2679 | for (i = 0; i < numsigs; i++) | |
2680 | if (program_signals[i]) | |
2681 | fprintf_unfiltered (gdb_stdlog, " %s", | |
2ea28649 | 2682 | gdb_signal_to_name (i)); |
9b224c5e PA |
2683 | |
2684 | fprintf_unfiltered (gdb_stdlog, " })\n"); | |
2685 | } | |
2686 | ||
daf5e9b6 | 2687 | (*t->to_program_signals) (t, numsigs, program_signals); |
9b224c5e PA |
2688 | return; |
2689 | } | |
2690 | } | |
2691 | } | |
2692 | ||
ee057212 DJ |
2693 | /* Look through the list of possible targets for a target that can |
2694 | follow forks. */ | |
2695 | ||
2696 | int | |
07107ca6 | 2697 | target_follow_fork (int follow_child, int detach_fork) |
ee057212 DJ |
2698 | { |
2699 | struct target_ops *t; | |
2700 | ||
2701 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2702 | { | |
2703 | if (t->to_follow_fork != NULL) | |
2704 | { | |
07107ca6 | 2705 | int retval = t->to_follow_fork (t, follow_child, detach_fork); |
5d502164 | 2706 | |
ee057212 | 2707 | if (targetdebug) |
07107ca6 LM |
2708 | fprintf_unfiltered (gdb_stdlog, |
2709 | "target_follow_fork (%d, %d) = %d\n", | |
2710 | follow_child, detach_fork, retval); | |
ee057212 DJ |
2711 | return retval; |
2712 | } | |
2713 | } | |
2714 | ||
2715 | /* Some target returned a fork event, but did not know how to follow it. */ | |
2716 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 2717 | _("could not find a target to follow fork")); |
ee057212 DJ |
2718 | } |
2719 | ||
136d6dae VP |
2720 | void |
2721 | target_mourn_inferior (void) | |
2722 | { | |
2723 | struct target_ops *t; | |
5d502164 | 2724 | |
136d6dae VP |
2725 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2726 | { | |
2727 | if (t->to_mourn_inferior != NULL) | |
2728 | { | |
2729 | t->to_mourn_inferior (t); | |
947b8855 PA |
2730 | if (targetdebug) |
2731 | fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n"); | |
efbd6e75 JB |
2732 | |
2733 | /* We no longer need to keep handles on any of the object files. | |
2734 | Make sure to release them to avoid unnecessarily locking any | |
2735 | of them while we're not actually debugging. */ | |
2736 | bfd_cache_close_all (); | |
2737 | ||
136d6dae VP |
2738 | return; |
2739 | } | |
2740 | } | |
2741 | ||
2742 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 2743 | _("could not find a target to follow mourn inferior")); |
136d6dae VP |
2744 | } |
2745 | ||
424163ea DJ |
2746 | /* Look for a target which can describe architectural features, starting |
2747 | from TARGET. If we find one, return its description. */ | |
2748 | ||
2749 | const struct target_desc * | |
2750 | target_read_description (struct target_ops *target) | |
2751 | { | |
2752 | struct target_ops *t; | |
2753 | ||
2754 | for (t = target; t != NULL; t = t->beneath) | |
2755 | if (t->to_read_description != NULL) | |
2756 | { | |
2757 | const struct target_desc *tdesc; | |
2758 | ||
2759 | tdesc = t->to_read_description (t); | |
2760 | if (tdesc) | |
2761 | return tdesc; | |
2762 | } | |
2763 | ||
2764 | return NULL; | |
2765 | } | |
2766 | ||
08388c79 DE |
2767 | /* The default implementation of to_search_memory. |
2768 | This implements a basic search of memory, reading target memory and | |
2769 | performing the search here (as opposed to performing the search in on the | |
2770 | target side with, for example, gdbserver). */ | |
2771 | ||
2772 | int | |
2773 | simple_search_memory (struct target_ops *ops, | |
2774 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2775 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2776 | CORE_ADDR *found_addrp) | |
2777 | { | |
2778 | /* NOTE: also defined in find.c testcase. */ | |
2779 | #define SEARCH_CHUNK_SIZE 16000 | |
2780 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
2781 | /* Buffer to hold memory contents for searching. */ | |
2782 | gdb_byte *search_buf; | |
2783 | unsigned search_buf_size; | |
2784 | struct cleanup *old_cleanups; | |
2785 | ||
2786 | search_buf_size = chunk_size + pattern_len - 1; | |
2787 | ||
2788 | /* No point in trying to allocate a buffer larger than the search space. */ | |
2789 | if (search_space_len < search_buf_size) | |
2790 | search_buf_size = search_space_len; | |
2791 | ||
2792 | search_buf = malloc (search_buf_size); | |
2793 | if (search_buf == NULL) | |
5e1471f5 | 2794 | error (_("Unable to allocate memory to perform the search.")); |
08388c79 DE |
2795 | old_cleanups = make_cleanup (free_current_contents, &search_buf); |
2796 | ||
2797 | /* Prime the search buffer. */ | |
2798 | ||
2799 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2800 | search_buf, start_addr, search_buf_size) != search_buf_size) | |
2801 | { | |
b3dc46ff AB |
2802 | warning (_("Unable to access %s bytes of target " |
2803 | "memory at %s, halting search."), | |
2804 | pulongest (search_buf_size), hex_string (start_addr)); | |
08388c79 DE |
2805 | do_cleanups (old_cleanups); |
2806 | return -1; | |
2807 | } | |
2808 | ||
2809 | /* Perform the search. | |
2810 | ||
2811 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
2812 | When we've scanned N bytes we copy the trailing bytes to the start and | |
2813 | read in another N bytes. */ | |
2814 | ||
2815 | while (search_space_len >= pattern_len) | |
2816 | { | |
2817 | gdb_byte *found_ptr; | |
2818 | unsigned nr_search_bytes = min (search_space_len, search_buf_size); | |
2819 | ||
2820 | found_ptr = memmem (search_buf, nr_search_bytes, | |
2821 | pattern, pattern_len); | |
2822 | ||
2823 | if (found_ptr != NULL) | |
2824 | { | |
2825 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
5d502164 | 2826 | |
08388c79 DE |
2827 | *found_addrp = found_addr; |
2828 | do_cleanups (old_cleanups); | |
2829 | return 1; | |
2830 | } | |
2831 | ||
2832 | /* Not found in this chunk, skip to next chunk. */ | |
2833 | ||
2834 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
2835 | if (search_space_len >= chunk_size) | |
2836 | search_space_len -= chunk_size; | |
2837 | else | |
2838 | search_space_len = 0; | |
2839 | ||
2840 | if (search_space_len >= pattern_len) | |
2841 | { | |
2842 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 2843 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
2844 | int nr_to_read; |
2845 | ||
2846 | /* Copy the trailing part of the previous iteration to the front | |
2847 | of the buffer for the next iteration. */ | |
2848 | gdb_assert (keep_len == pattern_len - 1); | |
2849 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
2850 | ||
2851 | nr_to_read = min (search_space_len - keep_len, chunk_size); | |
2852 | ||
2853 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2854 | search_buf + keep_len, read_addr, | |
2855 | nr_to_read) != nr_to_read) | |
2856 | { | |
b3dc46ff | 2857 | warning (_("Unable to access %s bytes of target " |
9b20d036 | 2858 | "memory at %s, halting search."), |
b3dc46ff | 2859 | plongest (nr_to_read), |
08388c79 DE |
2860 | hex_string (read_addr)); |
2861 | do_cleanups (old_cleanups); | |
2862 | return -1; | |
2863 | } | |
2864 | ||
2865 | start_addr += chunk_size; | |
2866 | } | |
2867 | } | |
2868 | ||
2869 | /* Not found. */ | |
2870 | ||
2871 | do_cleanups (old_cleanups); | |
2872 | return 0; | |
2873 | } | |
2874 | ||
2875 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the | |
2876 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2877 | ||
2878 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2879 | requiring halting of the search (e.g. memory read error). | |
2880 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2881 | ||
2882 | int | |
2883 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2884 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2885 | CORE_ADDR *found_addrp) | |
2886 | { | |
2887 | struct target_ops *t; | |
2888 | int found; | |
2889 | ||
2890 | /* We don't use INHERIT to set current_target.to_search_memory, | |
2891 | so we have to scan the target stack and handle targetdebug | |
2892 | ourselves. */ | |
2893 | ||
2894 | if (targetdebug) | |
2895 | fprintf_unfiltered (gdb_stdlog, "target_search_memory (%s, ...)\n", | |
2896 | hex_string (start_addr)); | |
2897 | ||
2898 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2899 | if (t->to_search_memory != NULL) | |
2900 | break; | |
2901 | ||
2902 | if (t != NULL) | |
2903 | { | |
2904 | found = t->to_search_memory (t, start_addr, search_space_len, | |
2905 | pattern, pattern_len, found_addrp); | |
2906 | } | |
2907 | else | |
2908 | { | |
2909 | /* If a special version of to_search_memory isn't available, use the | |
2910 | simple version. */ | |
c35b1492 | 2911 | found = simple_search_memory (current_target.beneath, |
08388c79 DE |
2912 | start_addr, search_space_len, |
2913 | pattern, pattern_len, found_addrp); | |
2914 | } | |
2915 | ||
2916 | if (targetdebug) | |
2917 | fprintf_unfiltered (gdb_stdlog, " = %d\n", found); | |
2918 | ||
2919 | return found; | |
2920 | } | |
2921 | ||
8edfe269 DJ |
2922 | /* Look through the currently pushed targets. If none of them will |
2923 | be able to restart the currently running process, issue an error | |
2924 | message. */ | |
2925 | ||
2926 | void | |
2927 | target_require_runnable (void) | |
2928 | { | |
2929 | struct target_ops *t; | |
2930 | ||
2931 | for (t = target_stack; t != NULL; t = t->beneath) | |
2932 | { | |
2933 | /* If this target knows how to create a new program, then | |
2934 | assume we will still be able to after killing the current | |
2935 | one. Either killing and mourning will not pop T, or else | |
2936 | find_default_run_target will find it again. */ | |
2937 | if (t->to_create_inferior != NULL) | |
2938 | return; | |
2939 | ||
2940 | /* Do not worry about thread_stratum targets that can not | |
2941 | create inferiors. Assume they will be pushed again if | |
2942 | necessary, and continue to the process_stratum. */ | |
85e747d2 UW |
2943 | if (t->to_stratum == thread_stratum |
2944 | || t->to_stratum == arch_stratum) | |
8edfe269 DJ |
2945 | continue; |
2946 | ||
3e43a32a MS |
2947 | error (_("The \"%s\" target does not support \"run\". " |
2948 | "Try \"help target\" or \"continue\"."), | |
8edfe269 DJ |
2949 | t->to_shortname); |
2950 | } | |
2951 | ||
2952 | /* This function is only called if the target is running. In that | |
2953 | case there should have been a process_stratum target and it | |
c378eb4e | 2954 | should either know how to create inferiors, or not... */ |
9b20d036 | 2955 | internal_error (__FILE__, __LINE__, _("No targets found")); |
8edfe269 DJ |
2956 | } |
2957 | ||
c906108c SS |
2958 | /* Look through the list of possible targets for a target that can |
2959 | execute a run or attach command without any other data. This is | |
2960 | used to locate the default process stratum. | |
2961 | ||
5f667f2d PA |
2962 | If DO_MESG is not NULL, the result is always valid (error() is |
2963 | called for errors); else, return NULL on error. */ | |
c906108c SS |
2964 | |
2965 | static struct target_ops * | |
fba45db2 | 2966 | find_default_run_target (char *do_mesg) |
c906108c SS |
2967 | { |
2968 | struct target_ops **t; | |
2969 | struct target_ops *runable = NULL; | |
2970 | int count; | |
2971 | ||
2972 | count = 0; | |
2973 | ||
2974 | for (t = target_structs; t < target_structs + target_struct_size; | |
2975 | ++t) | |
2976 | { | |
c5aa993b | 2977 | if ((*t)->to_can_run && target_can_run (*t)) |
c906108c SS |
2978 | { |
2979 | runable = *t; | |
2980 | ++count; | |
2981 | } | |
2982 | } | |
2983 | ||
2984 | if (count != 1) | |
5f667f2d PA |
2985 | { |
2986 | if (do_mesg) | |
2987 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
2988 | else | |
2989 | return NULL; | |
2990 | } | |
c906108c SS |
2991 | |
2992 | return runable; | |
2993 | } | |
2994 | ||
2995 | void | |
136d6dae | 2996 | find_default_attach (struct target_ops *ops, char *args, int from_tty) |
c906108c SS |
2997 | { |
2998 | struct target_ops *t; | |
2999 | ||
c5aa993b | 3000 | t = find_default_run_target ("attach"); |
136d6dae | 3001 | (t->to_attach) (t, args, from_tty); |
c906108c SS |
3002 | return; |
3003 | } | |
3004 | ||
c906108c | 3005 | void |
136d6dae VP |
3006 | find_default_create_inferior (struct target_ops *ops, |
3007 | char *exec_file, char *allargs, char **env, | |
c27cda74 | 3008 | int from_tty) |
c906108c SS |
3009 | { |
3010 | struct target_ops *t; | |
3011 | ||
c5aa993b | 3012 | t = find_default_run_target ("run"); |
136d6dae | 3013 | (t->to_create_inferior) (t, exec_file, allargs, env, from_tty); |
c906108c SS |
3014 | return; |
3015 | } | |
3016 | ||
2c0b251b | 3017 | static int |
6a109b6b | 3018 | find_default_can_async_p (struct target_ops *ignore) |
b84876c2 PA |
3019 | { |
3020 | struct target_ops *t; | |
3021 | ||
5f667f2d PA |
3022 | /* This may be called before the target is pushed on the stack; |
3023 | look for the default process stratum. If there's none, gdb isn't | |
3024 | configured with a native debugger, and target remote isn't | |
3025 | connected yet. */ | |
3026 | t = find_default_run_target (NULL); | |
6b84065d | 3027 | if (t && t->to_can_async_p != delegate_can_async_p) |
6a109b6b | 3028 | return (t->to_can_async_p) (t); |
b84876c2 PA |
3029 | return 0; |
3030 | } | |
3031 | ||
2c0b251b | 3032 | static int |
6a109b6b | 3033 | find_default_is_async_p (struct target_ops *ignore) |
b84876c2 PA |
3034 | { |
3035 | struct target_ops *t; | |
3036 | ||
5f667f2d PA |
3037 | /* This may be called before the target is pushed on the stack; |
3038 | look for the default process stratum. If there's none, gdb isn't | |
3039 | configured with a native debugger, and target remote isn't | |
3040 | connected yet. */ | |
3041 | t = find_default_run_target (NULL); | |
6b84065d | 3042 | if (t && t->to_is_async_p != delegate_is_async_p) |
6a109b6b | 3043 | return (t->to_is_async_p) (t); |
b84876c2 PA |
3044 | return 0; |
3045 | } | |
3046 | ||
2c0b251b | 3047 | static int |
2a9a2795 | 3048 | find_default_supports_non_stop (struct target_ops *self) |
9908b566 VP |
3049 | { |
3050 | struct target_ops *t; | |
3051 | ||
3052 | t = find_default_run_target (NULL); | |
3053 | if (t && t->to_supports_non_stop) | |
2a9a2795 | 3054 | return (t->to_supports_non_stop) (t); |
9908b566 VP |
3055 | return 0; |
3056 | } | |
3057 | ||
3058 | int | |
2c0b251b | 3059 | target_supports_non_stop (void) |
9908b566 VP |
3060 | { |
3061 | struct target_ops *t; | |
5d502164 | 3062 | |
9908b566 VP |
3063 | for (t = ¤t_target; t != NULL; t = t->beneath) |
3064 | if (t->to_supports_non_stop) | |
2a9a2795 | 3065 | return t->to_supports_non_stop (t); |
9908b566 VP |
3066 | |
3067 | return 0; | |
3068 | } | |
3069 | ||
145b16a9 UW |
3070 | /* Implement the "info proc" command. */ |
3071 | ||
451b7c33 | 3072 | int |
145b16a9 UW |
3073 | target_info_proc (char *args, enum info_proc_what what) |
3074 | { | |
3075 | struct target_ops *t; | |
3076 | ||
3077 | /* If we're already connected to something that can get us OS | |
3078 | related data, use it. Otherwise, try using the native | |
3079 | target. */ | |
3080 | if (current_target.to_stratum >= process_stratum) | |
3081 | t = current_target.beneath; | |
3082 | else | |
3083 | t = find_default_run_target (NULL); | |
3084 | ||
3085 | for (; t != NULL; t = t->beneath) | |
3086 | { | |
3087 | if (t->to_info_proc != NULL) | |
3088 | { | |
3089 | t->to_info_proc (t, args, what); | |
3090 | ||
3091 | if (targetdebug) | |
3092 | fprintf_unfiltered (gdb_stdlog, | |
3093 | "target_info_proc (\"%s\", %d)\n", args, what); | |
3094 | ||
451b7c33 | 3095 | return 1; |
145b16a9 UW |
3096 | } |
3097 | } | |
3098 | ||
451b7c33 | 3099 | return 0; |
145b16a9 UW |
3100 | } |
3101 | ||
03583c20 | 3102 | static int |
2bfc0540 | 3103 | find_default_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
3104 | { |
3105 | struct target_ops *t; | |
3106 | ||
3107 | t = find_default_run_target (NULL); | |
3108 | if (t && t->to_supports_disable_randomization) | |
2bfc0540 | 3109 | return (t->to_supports_disable_randomization) (t); |
03583c20 UW |
3110 | return 0; |
3111 | } | |
3112 | ||
3113 | int | |
3114 | target_supports_disable_randomization (void) | |
3115 | { | |
3116 | struct target_ops *t; | |
3117 | ||
3118 | for (t = ¤t_target; t != NULL; t = t->beneath) | |
3119 | if (t->to_supports_disable_randomization) | |
2bfc0540 | 3120 | return t->to_supports_disable_randomization (t); |
03583c20 UW |
3121 | |
3122 | return 0; | |
3123 | } | |
9908b566 | 3124 | |
07e059b5 VP |
3125 | char * |
3126 | target_get_osdata (const char *type) | |
3127 | { | |
07e059b5 VP |
3128 | struct target_ops *t; |
3129 | ||
739ef7fb PA |
3130 | /* If we're already connected to something that can get us OS |
3131 | related data, use it. Otherwise, try using the native | |
3132 | target. */ | |
3133 | if (current_target.to_stratum >= process_stratum) | |
6d097e65 | 3134 | t = current_target.beneath; |
739ef7fb PA |
3135 | else |
3136 | t = find_default_run_target ("get OS data"); | |
07e059b5 VP |
3137 | |
3138 | if (!t) | |
3139 | return NULL; | |
3140 | ||
6d097e65 | 3141 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
3142 | } |
3143 | ||
6c95b8df PA |
3144 | /* Determine the current address space of thread PTID. */ |
3145 | ||
3146 | struct address_space * | |
3147 | target_thread_address_space (ptid_t ptid) | |
3148 | { | |
c0694254 | 3149 | struct address_space *aspace; |
6c95b8df | 3150 | struct inferior *inf; |
c0694254 PA |
3151 | struct target_ops *t; |
3152 | ||
3153 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3154 | { | |
3155 | if (t->to_thread_address_space != NULL) | |
3156 | { | |
3157 | aspace = t->to_thread_address_space (t, ptid); | |
3158 | gdb_assert (aspace); | |
6c95b8df | 3159 | |
c0694254 PA |
3160 | if (targetdebug) |
3161 | fprintf_unfiltered (gdb_stdlog, | |
3162 | "target_thread_address_space (%s) = %d\n", | |
3163 | target_pid_to_str (ptid), | |
3164 | address_space_num (aspace)); | |
3165 | return aspace; | |
3166 | } | |
3167 | } | |
6c95b8df PA |
3168 | |
3169 | /* Fall-back to the "main" address space of the inferior. */ | |
3170 | inf = find_inferior_pid (ptid_get_pid (ptid)); | |
3171 | ||
3172 | if (inf == NULL || inf->aspace == NULL) | |
3e43a32a | 3173 | internal_error (__FILE__, __LINE__, |
9b20d036 MS |
3174 | _("Can't determine the current " |
3175 | "address space of thread %s\n"), | |
6c95b8df PA |
3176 | target_pid_to_str (ptid)); |
3177 | ||
3178 | return inf->aspace; | |
3179 | } | |
3180 | ||
7313baad UW |
3181 | |
3182 | /* Target file operations. */ | |
3183 | ||
3184 | static struct target_ops * | |
3185 | default_fileio_target (void) | |
3186 | { | |
3187 | /* If we're already connected to something that can perform | |
3188 | file I/O, use it. Otherwise, try using the native target. */ | |
3189 | if (current_target.to_stratum >= process_stratum) | |
3190 | return current_target.beneath; | |
3191 | else | |
3192 | return find_default_run_target ("file I/O"); | |
3193 | } | |
3194 | ||
3195 | /* Open FILENAME on the target, using FLAGS and MODE. Return a | |
3196 | target file descriptor, or -1 if an error occurs (and set | |
3197 | *TARGET_ERRNO). */ | |
3198 | int | |
3199 | target_fileio_open (const char *filename, int flags, int mode, | |
3200 | int *target_errno) | |
3201 | { | |
3202 | struct target_ops *t; | |
3203 | ||
3204 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3205 | { | |
3206 | if (t->to_fileio_open != NULL) | |
3207 | { | |
cd897586 | 3208 | int fd = t->to_fileio_open (t, filename, flags, mode, target_errno); |
7313baad UW |
3209 | |
3210 | if (targetdebug) | |
3211 | fprintf_unfiltered (gdb_stdlog, | |
3212 | "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n", | |
3213 | filename, flags, mode, | |
3214 | fd, fd != -1 ? 0 : *target_errno); | |
3215 | return fd; | |
3216 | } | |
3217 | } | |
3218 | ||
3219 | *target_errno = FILEIO_ENOSYS; | |
3220 | return -1; | |
3221 | } | |
3222 | ||
3223 | /* Write up to LEN bytes from WRITE_BUF to FD on the target. | |
3224 | Return the number of bytes written, or -1 if an error occurs | |
3225 | (and set *TARGET_ERRNO). */ | |
3226 | int | |
3227 | target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
3228 | ULONGEST offset, int *target_errno) | |
3229 | { | |
3230 | struct target_ops *t; | |
3231 | ||
3232 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3233 | { | |
3234 | if (t->to_fileio_pwrite != NULL) | |
3235 | { | |
0d866f62 | 3236 | int ret = t->to_fileio_pwrite (t, fd, write_buf, len, offset, |
7313baad UW |
3237 | target_errno); |
3238 | ||
3239 | if (targetdebug) | |
3240 | fprintf_unfiltered (gdb_stdlog, | |
a71b5a38 | 3241 | "target_fileio_pwrite (%d,...,%d,%s) " |
7313baad | 3242 | "= %d (%d)\n", |
a71b5a38 | 3243 | fd, len, pulongest (offset), |
7313baad UW |
3244 | ret, ret != -1 ? 0 : *target_errno); |
3245 | return ret; | |
3246 | } | |
3247 | } | |
3248 | ||
3249 | *target_errno = FILEIO_ENOSYS; | |
3250 | return -1; | |
3251 | } | |
3252 | ||
3253 | /* Read up to LEN bytes FD on the target into READ_BUF. | |
3254 | Return the number of bytes read, or -1 if an error occurs | |
3255 | (and set *TARGET_ERRNO). */ | |
3256 | int | |
3257 | target_fileio_pread (int fd, gdb_byte *read_buf, int len, | |
3258 | ULONGEST offset, int *target_errno) | |
3259 | { | |
3260 | struct target_ops *t; | |
3261 | ||
3262 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3263 | { | |
3264 | if (t->to_fileio_pread != NULL) | |
3265 | { | |
a3be983c | 3266 | int ret = t->to_fileio_pread (t, fd, read_buf, len, offset, |
7313baad UW |
3267 | target_errno); |
3268 | ||
3269 | if (targetdebug) | |
3270 | fprintf_unfiltered (gdb_stdlog, | |
a71b5a38 | 3271 | "target_fileio_pread (%d,...,%d,%s) " |
7313baad | 3272 | "= %d (%d)\n", |
a71b5a38 | 3273 | fd, len, pulongest (offset), |
7313baad UW |
3274 | ret, ret != -1 ? 0 : *target_errno); |
3275 | return ret; | |
3276 | } | |
3277 | } | |
3278 | ||
3279 | *target_errno = FILEIO_ENOSYS; | |
3280 | return -1; | |
3281 | } | |
3282 | ||
3283 | /* Close FD on the target. Return 0, or -1 if an error occurs | |
3284 | (and set *TARGET_ERRNO). */ | |
3285 | int | |
3286 | target_fileio_close (int fd, int *target_errno) | |
3287 | { | |
3288 | struct target_ops *t; | |
3289 | ||
3290 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3291 | { | |
3292 | if (t->to_fileio_close != NULL) | |
3293 | { | |
df39ea25 | 3294 | int ret = t->to_fileio_close (t, fd, target_errno); |
7313baad UW |
3295 | |
3296 | if (targetdebug) | |
3297 | fprintf_unfiltered (gdb_stdlog, | |
3298 | "target_fileio_close (%d) = %d (%d)\n", | |
3299 | fd, ret, ret != -1 ? 0 : *target_errno); | |
3300 | return ret; | |
3301 | } | |
3302 | } | |
3303 | ||
3304 | *target_errno = FILEIO_ENOSYS; | |
3305 | return -1; | |
3306 | } | |
3307 | ||
3308 | /* Unlink FILENAME on the target. Return 0, or -1 if an error | |
3309 | occurs (and set *TARGET_ERRNO). */ | |
3310 | int | |
3311 | target_fileio_unlink (const char *filename, int *target_errno) | |
3312 | { | |
3313 | struct target_ops *t; | |
3314 | ||
3315 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3316 | { | |
3317 | if (t->to_fileio_unlink != NULL) | |
3318 | { | |
dbbca37d | 3319 | int ret = t->to_fileio_unlink (t, filename, target_errno); |
7313baad UW |
3320 | |
3321 | if (targetdebug) | |
3322 | fprintf_unfiltered (gdb_stdlog, | |
3323 | "target_fileio_unlink (%s) = %d (%d)\n", | |
3324 | filename, ret, ret != -1 ? 0 : *target_errno); | |
3325 | return ret; | |
3326 | } | |
3327 | } | |
3328 | ||
3329 | *target_errno = FILEIO_ENOSYS; | |
3330 | return -1; | |
3331 | } | |
3332 | ||
b9e7b9c3 UW |
3333 | /* Read value of symbolic link FILENAME on the target. Return a |
3334 | null-terminated string allocated via xmalloc, or NULL if an error | |
3335 | occurs (and set *TARGET_ERRNO). */ | |
3336 | char * | |
3337 | target_fileio_readlink (const char *filename, int *target_errno) | |
3338 | { | |
3339 | struct target_ops *t; | |
3340 | ||
3341 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3342 | { | |
3343 | if (t->to_fileio_readlink != NULL) | |
3344 | { | |
fab5aa7c | 3345 | char *ret = t->to_fileio_readlink (t, filename, target_errno); |
b9e7b9c3 UW |
3346 | |
3347 | if (targetdebug) | |
3348 | fprintf_unfiltered (gdb_stdlog, | |
3349 | "target_fileio_readlink (%s) = %s (%d)\n", | |
3350 | filename, ret? ret : "(nil)", | |
3351 | ret? 0 : *target_errno); | |
3352 | return ret; | |
3353 | } | |
3354 | } | |
3355 | ||
3356 | *target_errno = FILEIO_ENOSYS; | |
3357 | return NULL; | |
3358 | } | |
3359 | ||
7313baad UW |
3360 | static void |
3361 | target_fileio_close_cleanup (void *opaque) | |
3362 | { | |
3363 | int fd = *(int *) opaque; | |
3364 | int target_errno; | |
3365 | ||
3366 | target_fileio_close (fd, &target_errno); | |
3367 | } | |
3368 | ||
3369 | /* Read target file FILENAME. Store the result in *BUF_P and | |
3370 | return the size of the transferred data. PADDING additional bytes are | |
3371 | available in *BUF_P. This is a helper function for | |
3372 | target_fileio_read_alloc; see the declaration of that function for more | |
3373 | information. */ | |
3374 | ||
3375 | static LONGEST | |
3376 | target_fileio_read_alloc_1 (const char *filename, | |
3377 | gdb_byte **buf_p, int padding) | |
3378 | { | |
3379 | struct cleanup *close_cleanup; | |
3380 | size_t buf_alloc, buf_pos; | |
3381 | gdb_byte *buf; | |
3382 | LONGEST n; | |
3383 | int fd; | |
3384 | int target_errno; | |
3385 | ||
3386 | fd = target_fileio_open (filename, FILEIO_O_RDONLY, 0700, &target_errno); | |
3387 | if (fd == -1) | |
3388 | return -1; | |
3389 | ||
3390 | close_cleanup = make_cleanup (target_fileio_close_cleanup, &fd); | |
3391 | ||
3392 | /* Start by reading up to 4K at a time. The target will throttle | |
3393 | this number down if necessary. */ | |
3394 | buf_alloc = 4096; | |
3395 | buf = xmalloc (buf_alloc); | |
3396 | buf_pos = 0; | |
3397 | while (1) | |
3398 | { | |
3399 | n = target_fileio_pread (fd, &buf[buf_pos], | |
3400 | buf_alloc - buf_pos - padding, buf_pos, | |
3401 | &target_errno); | |
3402 | if (n < 0) | |
3403 | { | |
3404 | /* An error occurred. */ | |
3405 | do_cleanups (close_cleanup); | |
3406 | xfree (buf); | |
3407 | return -1; | |
3408 | } | |
3409 | else if (n == 0) | |
3410 | { | |
3411 | /* Read all there was. */ | |
3412 | do_cleanups (close_cleanup); | |
3413 | if (buf_pos == 0) | |
3414 | xfree (buf); | |
3415 | else | |
3416 | *buf_p = buf; | |
3417 | return buf_pos; | |
3418 | } | |
3419 | ||
3420 | buf_pos += n; | |
3421 | ||
3422 | /* If the buffer is filling up, expand it. */ | |
3423 | if (buf_alloc < buf_pos * 2) | |
3424 | { | |
3425 | buf_alloc *= 2; | |
3426 | buf = xrealloc (buf, buf_alloc); | |
3427 | } | |
3428 | ||
3429 | QUIT; | |
3430 | } | |
3431 | } | |
3432 | ||
3433 | /* Read target file FILENAME. Store the result in *BUF_P and return | |
3434 | the size of the transferred data. See the declaration in "target.h" | |
3435 | function for more information about the return value. */ | |
3436 | ||
3437 | LONGEST | |
3438 | target_fileio_read_alloc (const char *filename, gdb_byte **buf_p) | |
3439 | { | |
3440 | return target_fileio_read_alloc_1 (filename, buf_p, 0); | |
3441 | } | |
3442 | ||
3443 | /* Read target file FILENAME. The result is NUL-terminated and | |
3444 | returned as a string, allocated using xmalloc. If an error occurs | |
3445 | or the transfer is unsupported, NULL is returned. Empty objects | |
3446 | are returned as allocated but empty strings. A warning is issued | |
3447 | if the result contains any embedded NUL bytes. */ | |
3448 | ||
3449 | char * | |
3450 | target_fileio_read_stralloc (const char *filename) | |
3451 | { | |
39086a0e PA |
3452 | gdb_byte *buffer; |
3453 | char *bufstr; | |
7313baad UW |
3454 | LONGEST i, transferred; |
3455 | ||
39086a0e PA |
3456 | transferred = target_fileio_read_alloc_1 (filename, &buffer, 1); |
3457 | bufstr = (char *) buffer; | |
7313baad UW |
3458 | |
3459 | if (transferred < 0) | |
3460 | return NULL; | |
3461 | ||
3462 | if (transferred == 0) | |
3463 | return xstrdup (""); | |
3464 | ||
39086a0e | 3465 | bufstr[transferred] = 0; |
7313baad UW |
3466 | |
3467 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
39086a0e PA |
3468 | for (i = strlen (bufstr); i < transferred; i++) |
3469 | if (bufstr[i] != 0) | |
7313baad UW |
3470 | { |
3471 | warning (_("target file %s " | |
3472 | "contained unexpected null characters"), | |
3473 | filename); | |
3474 | break; | |
3475 | } | |
3476 | ||
39086a0e | 3477 | return bufstr; |
7313baad UW |
3478 | } |
3479 | ||
3480 | ||
e0d24f8d | 3481 | static int |
31568a15 TT |
3482 | default_region_ok_for_hw_watchpoint (struct target_ops *self, |
3483 | CORE_ADDR addr, int len) | |
e0d24f8d | 3484 | { |
f5656ead | 3485 | return (len <= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT); |
ccaa32c7 GS |
3486 | } |
3487 | ||
5009afc5 AS |
3488 | static int |
3489 | default_watchpoint_addr_within_range (struct target_ops *target, | |
3490 | CORE_ADDR addr, | |
3491 | CORE_ADDR start, int length) | |
3492 | { | |
3493 | return addr >= start && addr < start + length; | |
3494 | } | |
3495 | ||
c2250ad1 UW |
3496 | static struct gdbarch * |
3497 | default_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
3498 | { | |
f5656ead | 3499 | return target_gdbarch (); |
c2250ad1 UW |
3500 | } |
3501 | ||
c906108c | 3502 | static int |
fba45db2 | 3503 | return_zero (void) |
c906108c SS |
3504 | { |
3505 | return 0; | |
3506 | } | |
3507 | ||
1b67eb02 AS |
3508 | static void * |
3509 | return_null (void) | |
3510 | { | |
3511 | return 0; | |
3512 | } | |
3513 | ||
ed9a39eb JM |
3514 | /* |
3515 | * Find the next target down the stack from the specified target. | |
3516 | */ | |
3517 | ||
3518 | struct target_ops * | |
fba45db2 | 3519 | find_target_beneath (struct target_ops *t) |
ed9a39eb | 3520 | { |
258b763a | 3521 | return t->beneath; |
ed9a39eb JM |
3522 | } |
3523 | ||
8b06beed TT |
3524 | /* See target.h. */ |
3525 | ||
3526 | struct target_ops * | |
3527 | find_target_at (enum strata stratum) | |
3528 | { | |
3529 | struct target_ops *t; | |
3530 | ||
3531 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3532 | if (t->to_stratum == stratum) | |
3533 | return t; | |
3534 | ||
3535 | return NULL; | |
3536 | } | |
3537 | ||
c906108c SS |
3538 | \f |
3539 | /* The inferior process has died. Long live the inferior! */ | |
3540 | ||
3541 | void | |
fba45db2 | 3542 | generic_mourn_inferior (void) |
c906108c | 3543 | { |
7f9f62ba | 3544 | ptid_t ptid; |
c906108c | 3545 | |
7f9f62ba | 3546 | ptid = inferior_ptid; |
39f77062 | 3547 | inferior_ptid = null_ptid; |
7f9f62ba | 3548 | |
f59f708a PA |
3549 | /* Mark breakpoints uninserted in case something tries to delete a |
3550 | breakpoint while we delete the inferior's threads (which would | |
3551 | fail, since the inferior is long gone). */ | |
3552 | mark_breakpoints_out (); | |
3553 | ||
7f9f62ba PA |
3554 | if (!ptid_equal (ptid, null_ptid)) |
3555 | { | |
3556 | int pid = ptid_get_pid (ptid); | |
6c95b8df | 3557 | exit_inferior (pid); |
7f9f62ba PA |
3558 | } |
3559 | ||
f59f708a PA |
3560 | /* Note this wipes step-resume breakpoints, so needs to be done |
3561 | after exit_inferior, which ends up referencing the step-resume | |
3562 | breakpoints through clear_thread_inferior_resources. */ | |
c906108c | 3563 | breakpoint_init_inferior (inf_exited); |
f59f708a | 3564 | |
c906108c SS |
3565 | registers_changed (); |
3566 | ||
c906108c SS |
3567 | reopen_exec_file (); |
3568 | reinit_frame_cache (); | |
3569 | ||
9a4105ab AC |
3570 | if (deprecated_detach_hook) |
3571 | deprecated_detach_hook (); | |
c906108c SS |
3572 | } |
3573 | \f | |
fd0a2a6f MK |
3574 | /* Convert a normal process ID to a string. Returns the string in a |
3575 | static buffer. */ | |
c906108c SS |
3576 | |
3577 | char * | |
39f77062 | 3578 | normal_pid_to_str (ptid_t ptid) |
c906108c | 3579 | { |
fd0a2a6f | 3580 | static char buf[32]; |
c906108c | 3581 | |
5fff8fc0 | 3582 | xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid)); |
c906108c SS |
3583 | return buf; |
3584 | } | |
3585 | ||
2c0b251b | 3586 | static char * |
117de6a9 PA |
3587 | dummy_pid_to_str (struct target_ops *ops, ptid_t ptid) |
3588 | { | |
3589 | return normal_pid_to_str (ptid); | |
3590 | } | |
3591 | ||
9b4eba8e HZ |
3592 | /* Error-catcher for target_find_memory_regions. */ |
3593 | static int | |
2e73927c TT |
3594 | dummy_find_memory_regions (struct target_ops *self, |
3595 | find_memory_region_ftype ignore1, void *ignore2) | |
be4d1333 | 3596 | { |
9b4eba8e | 3597 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3598 | return 0; |
3599 | } | |
3600 | ||
9b4eba8e HZ |
3601 | /* Error-catcher for target_make_corefile_notes. */ |
3602 | static char * | |
fc6691b2 TT |
3603 | dummy_make_corefile_notes (struct target_ops *self, |
3604 | bfd *ignore1, int *ignore2) | |
be4d1333 | 3605 | { |
9b4eba8e | 3606 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3607 | return NULL; |
3608 | } | |
3609 | ||
c906108c SS |
3610 | /* Set up the handful of non-empty slots needed by the dummy target |
3611 | vector. */ | |
3612 | ||
3613 | static void | |
fba45db2 | 3614 | init_dummy_target (void) |
c906108c SS |
3615 | { |
3616 | dummy_target.to_shortname = "None"; | |
3617 | dummy_target.to_longname = "None"; | |
3618 | dummy_target.to_doc = ""; | |
c906108c | 3619 | dummy_target.to_create_inferior = find_default_create_inferior; |
9908b566 | 3620 | dummy_target.to_supports_non_stop = find_default_supports_non_stop; |
03583c20 UW |
3621 | dummy_target.to_supports_disable_randomization |
3622 | = find_default_supports_disable_randomization; | |
117de6a9 | 3623 | dummy_target.to_pid_to_str = dummy_pid_to_str; |
c906108c | 3624 | dummy_target.to_stratum = dummy_stratum; |
c35b1492 PA |
3625 | dummy_target.to_has_all_memory = (int (*) (struct target_ops *)) return_zero; |
3626 | dummy_target.to_has_memory = (int (*) (struct target_ops *)) return_zero; | |
3627 | dummy_target.to_has_stack = (int (*) (struct target_ops *)) return_zero; | |
3628 | dummy_target.to_has_registers = (int (*) (struct target_ops *)) return_zero; | |
aeaec162 TT |
3629 | dummy_target.to_has_execution |
3630 | = (int (*) (struct target_ops *, ptid_t)) return_zero; | |
c906108c | 3631 | dummy_target.to_magic = OPS_MAGIC; |
1101cb7b TT |
3632 | |
3633 | install_dummy_methods (&dummy_target); | |
c906108c | 3634 | } |
c906108c | 3635 | \f |
c906108c | 3636 | static void |
fba45db2 | 3637 | debug_to_open (char *args, int from_tty) |
c906108c SS |
3638 | { |
3639 | debug_target.to_open (args, from_tty); | |
3640 | ||
96baa820 | 3641 | fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty); |
c906108c SS |
3642 | } |
3643 | ||
f1c07ab0 | 3644 | void |
460014f5 | 3645 | target_close (struct target_ops *targ) |
f1c07ab0 | 3646 | { |
7fdc1521 TT |
3647 | gdb_assert (!target_is_pushed (targ)); |
3648 | ||
f1c07ab0 | 3649 | if (targ->to_xclose != NULL) |
460014f5 | 3650 | targ->to_xclose (targ); |
f1c07ab0 | 3651 | else if (targ->to_close != NULL) |
de90e03d | 3652 | targ->to_close (targ); |
947b8855 PA |
3653 | |
3654 | if (targetdebug) | |
460014f5 | 3655 | fprintf_unfiltered (gdb_stdlog, "target_close ()\n"); |
f1c07ab0 AC |
3656 | } |
3657 | ||
136d6dae VP |
3658 | void |
3659 | target_attach (char *args, int from_tty) | |
3660 | { | |
e9a29200 TT |
3661 | current_target.to_attach (¤t_target, args, from_tty); |
3662 | if (targetdebug) | |
3663 | fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n", | |
3664 | args, from_tty); | |
136d6dae VP |
3665 | } |
3666 | ||
28439f5e PA |
3667 | int |
3668 | target_thread_alive (ptid_t ptid) | |
c906108c | 3669 | { |
28439f5e | 3670 | struct target_ops *t; |
5d502164 | 3671 | |
28439f5e PA |
3672 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3673 | { | |
3674 | if (t->to_thread_alive != NULL) | |
3675 | { | |
3676 | int retval; | |
c906108c | 3677 | |
28439f5e PA |
3678 | retval = t->to_thread_alive (t, ptid); |
3679 | if (targetdebug) | |
3680 | fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n", | |
dfd4cc63 | 3681 | ptid_get_pid (ptid), retval); |
28439f5e PA |
3682 | |
3683 | return retval; | |
3684 | } | |
3685 | } | |
3686 | ||
3687 | return 0; | |
3688 | } | |
3689 | ||
3690 | void | |
3691 | target_find_new_threads (void) | |
3692 | { | |
3693 | struct target_ops *t; | |
5d502164 | 3694 | |
28439f5e PA |
3695 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3696 | { | |
3697 | if (t->to_find_new_threads != NULL) | |
3698 | { | |
3699 | t->to_find_new_threads (t); | |
3700 | if (targetdebug) | |
3701 | fprintf_unfiltered (gdb_stdlog, "target_find_new_threads ()\n"); | |
3702 | ||
3703 | return; | |
3704 | } | |
3705 | } | |
c906108c SS |
3706 | } |
3707 | ||
d914c394 SS |
3708 | void |
3709 | target_stop (ptid_t ptid) | |
3710 | { | |
3711 | if (!may_stop) | |
3712 | { | |
3713 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3714 | return; | |
3715 | } | |
3716 | ||
1eab8a48 | 3717 | (*current_target.to_stop) (¤t_target, ptid); |
d914c394 SS |
3718 | } |
3719 | ||
c906108c | 3720 | static void |
f045800c | 3721 | debug_to_post_attach (struct target_ops *self, int pid) |
c906108c | 3722 | { |
f045800c | 3723 | debug_target.to_post_attach (&debug_target, pid); |
c906108c | 3724 | |
28439f5e | 3725 | fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid); |
c906108c SS |
3726 | } |
3727 | ||
09826ec5 PA |
3728 | /* Concatenate ELEM to LIST, a comma separate list, and return the |
3729 | result. The LIST incoming argument is released. */ | |
3730 | ||
3731 | static char * | |
3732 | str_comma_list_concat_elem (char *list, const char *elem) | |
3733 | { | |
3734 | if (list == NULL) | |
3735 | return xstrdup (elem); | |
3736 | else | |
3737 | return reconcat (list, list, ", ", elem, (char *) NULL); | |
3738 | } | |
3739 | ||
3740 | /* Helper for target_options_to_string. If OPT is present in | |
3741 | TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET. | |
3742 | Returns the new resulting string. OPT is removed from | |
3743 | TARGET_OPTIONS. */ | |
3744 | ||
3745 | static char * | |
3746 | do_option (int *target_options, char *ret, | |
3747 | int opt, char *opt_str) | |
3748 | { | |
3749 | if ((*target_options & opt) != 0) | |
3750 | { | |
3751 | ret = str_comma_list_concat_elem (ret, opt_str); | |
3752 | *target_options &= ~opt; | |
3753 | } | |
3754 | ||
3755 | return ret; | |
3756 | } | |
3757 | ||
3758 | char * | |
3759 | target_options_to_string (int target_options) | |
3760 | { | |
3761 | char *ret = NULL; | |
3762 | ||
3763 | #define DO_TARG_OPTION(OPT) \ | |
3764 | ret = do_option (&target_options, ret, OPT, #OPT) | |
3765 | ||
3766 | DO_TARG_OPTION (TARGET_WNOHANG); | |
3767 | ||
3768 | if (target_options != 0) | |
3769 | ret = str_comma_list_concat_elem (ret, "unknown???"); | |
3770 | ||
3771 | if (ret == NULL) | |
3772 | ret = xstrdup (""); | |
3773 | return ret; | |
3774 | } | |
3775 | ||
bf0c5130 | 3776 | static void |
56be3814 UW |
3777 | debug_print_register (const char * func, |
3778 | struct regcache *regcache, int regno) | |
bf0c5130 | 3779 | { |
f8d29908 | 3780 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
5d502164 | 3781 | |
bf0c5130 | 3782 | fprintf_unfiltered (gdb_stdlog, "%s ", func); |
f8d29908 | 3783 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) |
f8d29908 UW |
3784 | && gdbarch_register_name (gdbarch, regno) != NULL |
3785 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') | |
3786 | fprintf_unfiltered (gdb_stdlog, "(%s)", | |
3787 | gdbarch_register_name (gdbarch, regno)); | |
bf0c5130 AC |
3788 | else |
3789 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
0ff58721 | 3790 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) |
bf0c5130 | 3791 | { |
e17a4113 | 3792 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
f8d29908 | 3793 | int i, size = register_size (gdbarch, regno); |
e362b510 | 3794 | gdb_byte buf[MAX_REGISTER_SIZE]; |
5d502164 | 3795 | |
0ff58721 | 3796 | regcache_raw_collect (regcache, regno, buf); |
bf0c5130 | 3797 | fprintf_unfiltered (gdb_stdlog, " = "); |
81c4a259 | 3798 | for (i = 0; i < size; i++) |
bf0c5130 AC |
3799 | { |
3800 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
3801 | } | |
81c4a259 | 3802 | if (size <= sizeof (LONGEST)) |
bf0c5130 | 3803 | { |
e17a4113 | 3804 | ULONGEST val = extract_unsigned_integer (buf, size, byte_order); |
5d502164 | 3805 | |
0b1553bc UW |
3806 | fprintf_unfiltered (gdb_stdlog, " %s %s", |
3807 | core_addr_to_string_nz (val), plongest (val)); | |
bf0c5130 AC |
3808 | } |
3809 | } | |
3810 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
3811 | } | |
3812 | ||
28439f5e PA |
3813 | void |
3814 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 3815 | { |
28439f5e | 3816 | struct target_ops *t; |
5d502164 | 3817 | |
28439f5e PA |
3818 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3819 | { | |
3820 | if (t->to_fetch_registers != NULL) | |
3821 | { | |
3822 | t->to_fetch_registers (t, regcache, regno); | |
3823 | if (targetdebug) | |
3824 | debug_print_register ("target_fetch_registers", regcache, regno); | |
3825 | return; | |
3826 | } | |
3827 | } | |
c906108c SS |
3828 | } |
3829 | ||
28439f5e PA |
3830 | void |
3831 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 3832 | { |
28439f5e | 3833 | struct target_ops *t; |
5d502164 | 3834 | |
d914c394 SS |
3835 | if (!may_write_registers) |
3836 | error (_("Writing to registers is not allowed (regno %d)"), regno); | |
3837 | ||
6b84065d TT |
3838 | current_target.to_store_registers (¤t_target, regcache, regno); |
3839 | if (targetdebug) | |
28439f5e | 3840 | { |
6b84065d | 3841 | debug_print_register ("target_store_registers", regcache, regno); |
28439f5e | 3842 | } |
c906108c SS |
3843 | } |
3844 | ||
dc146f7c VP |
3845 | int |
3846 | target_core_of_thread (ptid_t ptid) | |
3847 | { | |
3848 | struct target_ops *t; | |
3849 | ||
3850 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3851 | { | |
3852 | if (t->to_core_of_thread != NULL) | |
3853 | { | |
3854 | int retval = t->to_core_of_thread (t, ptid); | |
5d502164 | 3855 | |
dc146f7c | 3856 | if (targetdebug) |
3e43a32a MS |
3857 | fprintf_unfiltered (gdb_stdlog, |
3858 | "target_core_of_thread (%d) = %d\n", | |
dfd4cc63 | 3859 | ptid_get_pid (ptid), retval); |
dc146f7c VP |
3860 | return retval; |
3861 | } | |
3862 | } | |
3863 | ||
3864 | return -1; | |
3865 | } | |
3866 | ||
4a5e7a5b PA |
3867 | int |
3868 | target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3869 | { | |
3870 | struct target_ops *t; | |
3871 | ||
3872 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3873 | { | |
3874 | if (t->to_verify_memory != NULL) | |
3875 | { | |
3876 | int retval = t->to_verify_memory (t, data, memaddr, size); | |
5d502164 | 3877 | |
4a5e7a5b | 3878 | if (targetdebug) |
3e43a32a MS |
3879 | fprintf_unfiltered (gdb_stdlog, |
3880 | "target_verify_memory (%s, %s) = %d\n", | |
f5656ead | 3881 | paddress (target_gdbarch (), memaddr), |
4a5e7a5b PA |
3882 | pulongest (size), |
3883 | retval); | |
3884 | return retval; | |
3885 | } | |
3886 | } | |
3887 | ||
3888 | tcomplain (); | |
3889 | } | |
3890 | ||
9c06b0b4 TJB |
3891 | /* The documentation for this function is in its prototype declaration in |
3892 | target.h. */ | |
3893 | ||
3894 | int | |
3895 | target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
3896 | { | |
3897 | struct target_ops *t; | |
3898 | ||
3899 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3900 | if (t->to_insert_mask_watchpoint != NULL) | |
3901 | { | |
3902 | int ret; | |
3903 | ||
3904 | ret = t->to_insert_mask_watchpoint (t, addr, mask, rw); | |
3905 | ||
3906 | if (targetdebug) | |
3907 | fprintf_unfiltered (gdb_stdlog, "\ | |
3908 | target_insert_mask_watchpoint (%s, %s, %d) = %d\n", | |
3909 | core_addr_to_string (addr), | |
3910 | core_addr_to_string (mask), rw, ret); | |
3911 | ||
3912 | return ret; | |
3913 | } | |
3914 | ||
3915 | return 1; | |
3916 | } | |
3917 | ||
3918 | /* The documentation for this function is in its prototype declaration in | |
3919 | target.h. */ | |
3920 | ||
3921 | int | |
3922 | target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
3923 | { | |
3924 | struct target_ops *t; | |
3925 | ||
3926 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3927 | if (t->to_remove_mask_watchpoint != NULL) | |
3928 | { | |
3929 | int ret; | |
3930 | ||
3931 | ret = t->to_remove_mask_watchpoint (t, addr, mask, rw); | |
3932 | ||
3933 | if (targetdebug) | |
3934 | fprintf_unfiltered (gdb_stdlog, "\ | |
3935 | target_remove_mask_watchpoint (%s, %s, %d) = %d\n", | |
3936 | core_addr_to_string (addr), | |
3937 | core_addr_to_string (mask), rw, ret); | |
3938 | ||
3939 | return ret; | |
3940 | } | |
3941 | ||
3942 | return 1; | |
3943 | } | |
3944 | ||
3945 | /* The documentation for this function is in its prototype declaration | |
3946 | in target.h. */ | |
3947 | ||
3948 | int | |
3949 | target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask) | |
3950 | { | |
3951 | struct target_ops *t; | |
3952 | ||
3953 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3954 | if (t->to_masked_watch_num_registers != NULL) | |
3955 | return t->to_masked_watch_num_registers (t, addr, mask); | |
3956 | ||
3957 | return -1; | |
3958 | } | |
3959 | ||
f1310107 TJB |
3960 | /* The documentation for this function is in its prototype declaration |
3961 | in target.h. */ | |
3962 | ||
3963 | int | |
3964 | target_ranged_break_num_registers (void) | |
3965 | { | |
3966 | struct target_ops *t; | |
3967 | ||
3968 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3969 | if (t->to_ranged_break_num_registers != NULL) | |
3970 | return t->to_ranged_break_num_registers (t); | |
3971 | ||
3972 | return -1; | |
3973 | } | |
3974 | ||
02d27625 MM |
3975 | /* See target.h. */ |
3976 | ||
02d27625 MM |
3977 | struct btrace_target_info * |
3978 | target_enable_btrace (ptid_t ptid) | |
3979 | { | |
3980 | struct target_ops *t; | |
3981 | ||
3982 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3983 | if (t->to_enable_btrace != NULL) | |
e3c49f88 | 3984 | return t->to_enable_btrace (t, ptid); |
02d27625 MM |
3985 | |
3986 | tcomplain (); | |
3987 | return NULL; | |
3988 | } | |
3989 | ||
3990 | /* See target.h. */ | |
3991 | ||
3992 | void | |
3993 | target_disable_btrace (struct btrace_target_info *btinfo) | |
3994 | { | |
3995 | struct target_ops *t; | |
3996 | ||
3997 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3998 | if (t->to_disable_btrace != NULL) | |
d92f7ee3 | 3999 | { |
25e95349 | 4000 | t->to_disable_btrace (t, btinfo); |
d92f7ee3 SDJ |
4001 | return; |
4002 | } | |
02d27625 MM |
4003 | |
4004 | tcomplain (); | |
4005 | } | |
4006 | ||
4007 | /* See target.h. */ | |
4008 | ||
4009 | void | |
4010 | target_teardown_btrace (struct btrace_target_info *btinfo) | |
4011 | { | |
4012 | struct target_ops *t; | |
4013 | ||
4014 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4015 | if (t->to_teardown_btrace != NULL) | |
d92f7ee3 | 4016 | { |
1777056d | 4017 | t->to_teardown_btrace (t, btinfo); |
d92f7ee3 SDJ |
4018 | return; |
4019 | } | |
02d27625 MM |
4020 | |
4021 | tcomplain (); | |
4022 | } | |
4023 | ||
4024 | /* See target.h. */ | |
4025 | ||
969c39fb MM |
4026 | enum btrace_error |
4027 | target_read_btrace (VEC (btrace_block_s) **btrace, | |
4028 | struct btrace_target_info *btinfo, | |
02d27625 MM |
4029 | enum btrace_read_type type) |
4030 | { | |
4031 | struct target_ops *t; | |
4032 | ||
4033 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4034 | if (t->to_read_btrace != NULL) | |
39c49f83 | 4035 | return t->to_read_btrace (t, btrace, btinfo, type); |
02d27625 MM |
4036 | |
4037 | tcomplain (); | |
969c39fb | 4038 | return BTRACE_ERR_NOT_SUPPORTED; |
02d27625 MM |
4039 | } |
4040 | ||
d02ed0bb MM |
4041 | /* See target.h. */ |
4042 | ||
7c1687a9 MM |
4043 | void |
4044 | target_stop_recording (void) | |
4045 | { | |
4046 | struct target_ops *t; | |
4047 | ||
4048 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4049 | if (t->to_stop_recording != NULL) | |
4050 | { | |
c6cd7c02 | 4051 | t->to_stop_recording (t); |
7c1687a9 MM |
4052 | return; |
4053 | } | |
4054 | ||
4055 | /* This is optional. */ | |
4056 | } | |
4057 | ||
4058 | /* See target.h. */ | |
4059 | ||
d02ed0bb MM |
4060 | void |
4061 | target_info_record (void) | |
4062 | { | |
4063 | struct target_ops *t; | |
4064 | ||
4065 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4066 | if (t->to_info_record != NULL) | |
4067 | { | |
630d6a4a | 4068 | t->to_info_record (t); |
d02ed0bb MM |
4069 | return; |
4070 | } | |
4071 | ||
4072 | tcomplain (); | |
4073 | } | |
4074 | ||
4075 | /* See target.h. */ | |
4076 | ||
4077 | void | |
85e1311a | 4078 | target_save_record (const char *filename) |
d02ed0bb MM |
4079 | { |
4080 | struct target_ops *t; | |
4081 | ||
4082 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4083 | if (t->to_save_record != NULL) | |
4084 | { | |
1390f529 | 4085 | t->to_save_record (t, filename); |
d02ed0bb MM |
4086 | return; |
4087 | } | |
4088 | ||
4089 | tcomplain (); | |
4090 | } | |
4091 | ||
4092 | /* See target.h. */ | |
4093 | ||
4094 | int | |
4095 | target_supports_delete_record (void) | |
4096 | { | |
4097 | struct target_ops *t; | |
4098 | ||
4099 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4100 | if (t->to_delete_record != NULL) | |
4101 | return 1; | |
4102 | ||
4103 | return 0; | |
4104 | } | |
4105 | ||
4106 | /* See target.h. */ | |
4107 | ||
4108 | void | |
4109 | target_delete_record (void) | |
4110 | { | |
4111 | struct target_ops *t; | |
4112 | ||
4113 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4114 | if (t->to_delete_record != NULL) | |
4115 | { | |
d1b55219 | 4116 | t->to_delete_record (t); |
d02ed0bb MM |
4117 | return; |
4118 | } | |
4119 | ||
4120 | tcomplain (); | |
4121 | } | |
4122 | ||
4123 | /* See target.h. */ | |
4124 | ||
4125 | int | |
4126 | target_record_is_replaying (void) | |
4127 | { | |
4128 | struct target_ops *t; | |
4129 | ||
4130 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4131 | if (t->to_record_is_replaying != NULL) | |
1c63c994 | 4132 | return t->to_record_is_replaying (t); |
d02ed0bb MM |
4133 | |
4134 | return 0; | |
4135 | } | |
4136 | ||
4137 | /* See target.h. */ | |
4138 | ||
4139 | void | |
4140 | target_goto_record_begin (void) | |
4141 | { | |
4142 | struct target_ops *t; | |
4143 | ||
4144 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4145 | if (t->to_goto_record_begin != NULL) | |
4146 | { | |
08475817 | 4147 | t->to_goto_record_begin (t); |
d02ed0bb MM |
4148 | return; |
4149 | } | |
4150 | ||
4151 | tcomplain (); | |
4152 | } | |
4153 | ||
4154 | /* See target.h. */ | |
4155 | ||
4156 | void | |
4157 | target_goto_record_end (void) | |
4158 | { | |
4159 | struct target_ops *t; | |
4160 | ||
4161 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4162 | if (t->to_goto_record_end != NULL) | |
4163 | { | |
307a1b91 | 4164 | t->to_goto_record_end (t); |
d02ed0bb MM |
4165 | return; |
4166 | } | |
4167 | ||
4168 | tcomplain (); | |
4169 | } | |
4170 | ||
4171 | /* See target.h. */ | |
4172 | ||
4173 | void | |
4174 | target_goto_record (ULONGEST insn) | |
4175 | { | |
4176 | struct target_ops *t; | |
4177 | ||
4178 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4179 | if (t->to_goto_record != NULL) | |
4180 | { | |
606183ac | 4181 | t->to_goto_record (t, insn); |
d02ed0bb MM |
4182 | return; |
4183 | } | |
4184 | ||
4185 | tcomplain (); | |
4186 | } | |
4187 | ||
67c86d06 MM |
4188 | /* See target.h. */ |
4189 | ||
4190 | void | |
4191 | target_insn_history (int size, int flags) | |
4192 | { | |
4193 | struct target_ops *t; | |
4194 | ||
4195 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4196 | if (t->to_insn_history != NULL) | |
4197 | { | |
7a6c5609 | 4198 | t->to_insn_history (t, size, flags); |
67c86d06 MM |
4199 | return; |
4200 | } | |
4201 | ||
4202 | tcomplain (); | |
4203 | } | |
4204 | ||
4205 | /* See target.h. */ | |
4206 | ||
4207 | void | |
4208 | target_insn_history_from (ULONGEST from, int size, int flags) | |
4209 | { | |
4210 | struct target_ops *t; | |
4211 | ||
4212 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4213 | if (t->to_insn_history_from != NULL) | |
4214 | { | |
9abc3ff3 | 4215 | t->to_insn_history_from (t, from, size, flags); |
67c86d06 MM |
4216 | return; |
4217 | } | |
4218 | ||
4219 | tcomplain (); | |
4220 | } | |
4221 | ||
4222 | /* See target.h. */ | |
4223 | ||
4224 | void | |
4225 | target_insn_history_range (ULONGEST begin, ULONGEST end, int flags) | |
4226 | { | |
4227 | struct target_ops *t; | |
4228 | ||
4229 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4230 | if (t->to_insn_history_range != NULL) | |
4231 | { | |
4e99c6b7 | 4232 | t->to_insn_history_range (t, begin, end, flags); |
67c86d06 MM |
4233 | return; |
4234 | } | |
4235 | ||
4236 | tcomplain (); | |
4237 | } | |
4238 | ||
15984c13 MM |
4239 | /* See target.h. */ |
4240 | ||
4241 | void | |
4242 | target_call_history (int size, int flags) | |
4243 | { | |
4244 | struct target_ops *t; | |
4245 | ||
4246 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4247 | if (t->to_call_history != NULL) | |
4248 | { | |
5df2fcba | 4249 | t->to_call_history (t, size, flags); |
15984c13 MM |
4250 | return; |
4251 | } | |
4252 | ||
4253 | tcomplain (); | |
4254 | } | |
4255 | ||
4256 | /* See target.h. */ | |
4257 | ||
4258 | void | |
4259 | target_call_history_from (ULONGEST begin, int size, int flags) | |
4260 | { | |
4261 | struct target_ops *t; | |
4262 | ||
4263 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4264 | if (t->to_call_history_from != NULL) | |
4265 | { | |
ec0aea04 | 4266 | t->to_call_history_from (t, begin, size, flags); |
15984c13 MM |
4267 | return; |
4268 | } | |
4269 | ||
4270 | tcomplain (); | |
4271 | } | |
4272 | ||
4273 | /* See target.h. */ | |
4274 | ||
4275 | void | |
4276 | target_call_history_range (ULONGEST begin, ULONGEST end, int flags) | |
4277 | { | |
4278 | struct target_ops *t; | |
4279 | ||
4280 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4281 | if (t->to_call_history_range != NULL) | |
4282 | { | |
f0d960ea | 4283 | t->to_call_history_range (t, begin, end, flags); |
15984c13 MM |
4284 | return; |
4285 | } | |
4286 | ||
4287 | tcomplain (); | |
4288 | } | |
4289 | ||
c906108c | 4290 | static void |
f32dbf8c | 4291 | debug_to_prepare_to_store (struct target_ops *self, struct regcache *regcache) |
c906108c | 4292 | { |
f32dbf8c | 4293 | debug_target.to_prepare_to_store (&debug_target, regcache); |
c906108c | 4294 | |
96baa820 | 4295 | fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n"); |
c906108c SS |
4296 | } |
4297 | ||
ea001bdc MM |
4298 | /* See target.h. */ |
4299 | ||
4300 | const struct frame_unwind * | |
4301 | target_get_unwinder (void) | |
4302 | { | |
4303 | struct target_ops *t; | |
4304 | ||
4305 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4306 | if (t->to_get_unwinder != NULL) | |
4307 | return t->to_get_unwinder; | |
4308 | ||
4309 | return NULL; | |
4310 | } | |
4311 | ||
4312 | /* See target.h. */ | |
4313 | ||
4314 | const struct frame_unwind * | |
4315 | target_get_tailcall_unwinder (void) | |
4316 | { | |
4317 | struct target_ops *t; | |
4318 | ||
4319 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4320 | if (t->to_get_tailcall_unwinder != NULL) | |
4321 | return t->to_get_tailcall_unwinder; | |
4322 | ||
4323 | return NULL; | |
4324 | } | |
4325 | ||
118e6252 MM |
4326 | /* See target.h. */ |
4327 | ||
4328 | CORE_ADDR | |
4329 | forward_target_decr_pc_after_break (struct target_ops *ops, | |
4330 | struct gdbarch *gdbarch) | |
4331 | { | |
4332 | for (; ops != NULL; ops = ops->beneath) | |
4333 | if (ops->to_decr_pc_after_break != NULL) | |
4334 | return ops->to_decr_pc_after_break (ops, gdbarch); | |
4335 | ||
4336 | return gdbarch_decr_pc_after_break (gdbarch); | |
4337 | } | |
4338 | ||
4339 | /* See target.h. */ | |
4340 | ||
4341 | CORE_ADDR | |
4342 | target_decr_pc_after_break (struct gdbarch *gdbarch) | |
4343 | { | |
4344 | return forward_target_decr_pc_after_break (current_target.beneath, gdbarch); | |
4345 | } | |
4346 | ||
c906108c | 4347 | static int |
961cb7b5 | 4348 | deprecated_debug_xfer_memory (CORE_ADDR memaddr, bfd_byte *myaddr, int len, |
c8e73a31 AC |
4349 | int write, struct mem_attrib *attrib, |
4350 | struct target_ops *target) | |
c906108c SS |
4351 | { |
4352 | int retval; | |
4353 | ||
c8e73a31 AC |
4354 | retval = debug_target.deprecated_xfer_memory (memaddr, myaddr, len, write, |
4355 | attrib, target); | |
c906108c | 4356 | |
96baa820 | 4357 | fprintf_unfiltered (gdb_stdlog, |
53b71562 | 4358 | "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d", |
f5656ead | 4359 | paddress (target_gdbarch (), memaddr), len, |
5af949e3 | 4360 | write ? "write" : "read", retval); |
c906108c | 4361 | |
c906108c SS |
4362 | if (retval > 0) |
4363 | { | |
4364 | int i; | |
4365 | ||
96baa820 | 4366 | fputs_unfiltered (", bytes =", gdb_stdlog); |
c906108c SS |
4367 | for (i = 0; i < retval; i++) |
4368 | { | |
53b71562 | 4369 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
333dabeb DJ |
4370 | { |
4371 | if (targetdebug < 2 && i > 0) | |
4372 | { | |
4373 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
4374 | break; | |
4375 | } | |
4376 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
4377 | } | |
2bc416ba | 4378 | |
96baa820 | 4379 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
c906108c SS |
4380 | } |
4381 | } | |
4382 | ||
96baa820 | 4383 | fputc_unfiltered ('\n', gdb_stdlog); |
c906108c SS |
4384 | |
4385 | return retval; | |
4386 | } | |
4387 | ||
4388 | static void | |
fba45db2 | 4389 | debug_to_files_info (struct target_ops *target) |
c906108c SS |
4390 | { |
4391 | debug_target.to_files_info (target); | |
4392 | ||
96baa820 | 4393 | fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n"); |
c906108c SS |
4394 | } |
4395 | ||
4396 | static int | |
3db08215 | 4397 | debug_to_insert_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, |
a6d9a66e | 4398 | struct bp_target_info *bp_tgt) |
c906108c SS |
4399 | { |
4400 | int retval; | |
4401 | ||
6b84065d | 4402 | retval = debug_target.to_insert_breakpoint (&debug_target, gdbarch, bp_tgt); |
c906108c | 4403 | |
96baa820 | 4404 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
4405 | "target_insert_breakpoint (%s, xxx) = %ld\n", |
4406 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 4407 | (unsigned long) retval); |
c906108c SS |
4408 | return retval; |
4409 | } | |
4410 | ||
4411 | static int | |
3db08215 | 4412 | debug_to_remove_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, |
a6d9a66e | 4413 | struct bp_target_info *bp_tgt) |
c906108c SS |
4414 | { |
4415 | int retval; | |
4416 | ||
6b84065d | 4417 | retval = debug_target.to_remove_breakpoint (&debug_target, gdbarch, bp_tgt); |
c906108c | 4418 | |
96baa820 | 4419 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
4420 | "target_remove_breakpoint (%s, xxx) = %ld\n", |
4421 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 4422 | (unsigned long) retval); |
c906108c SS |
4423 | return retval; |
4424 | } | |
4425 | ||
ccaa32c7 | 4426 | static int |
5461485a TT |
4427 | debug_to_can_use_hw_breakpoint (struct target_ops *self, |
4428 | int type, int cnt, int from_tty) | |
ccaa32c7 GS |
4429 | { |
4430 | int retval; | |
4431 | ||
5461485a TT |
4432 | retval = debug_target.to_can_use_hw_breakpoint (&debug_target, |
4433 | type, cnt, from_tty); | |
ccaa32c7 GS |
4434 | |
4435 | fprintf_unfiltered (gdb_stdlog, | |
4436 | "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n", | |
4437 | (unsigned long) type, | |
4438 | (unsigned long) cnt, | |
4439 | (unsigned long) from_tty, | |
4440 | (unsigned long) retval); | |
4441 | return retval; | |
4442 | } | |
4443 | ||
e0d24f8d | 4444 | static int |
31568a15 TT |
4445 | debug_to_region_ok_for_hw_watchpoint (struct target_ops *self, |
4446 | CORE_ADDR addr, int len) | |
e0d24f8d WZ |
4447 | { |
4448 | CORE_ADDR retval; | |
4449 | ||
31568a15 TT |
4450 | retval = debug_target.to_region_ok_for_hw_watchpoint (&debug_target, |
4451 | addr, len); | |
e0d24f8d WZ |
4452 | |
4453 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4454 | "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n", |
4455 | core_addr_to_string (addr), (unsigned long) len, | |
4456 | core_addr_to_string (retval)); | |
e0d24f8d WZ |
4457 | return retval; |
4458 | } | |
4459 | ||
0cf6dd15 | 4460 | static int |
c3a5ff89 TT |
4461 | debug_to_can_accel_watchpoint_condition (struct target_ops *self, |
4462 | CORE_ADDR addr, int len, int rw, | |
0cf6dd15 TJB |
4463 | struct expression *cond) |
4464 | { | |
4465 | int retval; | |
4466 | ||
c3a5ff89 TT |
4467 | retval = debug_target.to_can_accel_watchpoint_condition (&debug_target, |
4468 | addr, len, | |
3e43a32a | 4469 | rw, cond); |
0cf6dd15 TJB |
4470 | |
4471 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
4472 | "target_can_accel_watchpoint_condition " |
4473 | "(%s, %d, %d, %s) = %ld\n", | |
bd91e7ae OS |
4474 | core_addr_to_string (addr), len, rw, |
4475 | host_address_to_string (cond), (unsigned long) retval); | |
0cf6dd15 TJB |
4476 | return retval; |
4477 | } | |
4478 | ||
ccaa32c7 | 4479 | static int |
6a109b6b | 4480 | debug_to_stopped_by_watchpoint (struct target_ops *ops) |
ccaa32c7 GS |
4481 | { |
4482 | int retval; | |
4483 | ||
6a109b6b | 4484 | retval = debug_target.to_stopped_by_watchpoint (&debug_target); |
ccaa32c7 GS |
4485 | |
4486 | fprintf_unfiltered (gdb_stdlog, | |
d92524f1 | 4487 | "target_stopped_by_watchpoint () = %ld\n", |
ccaa32c7 GS |
4488 | (unsigned long) retval); |
4489 | return retval; | |
4490 | } | |
4491 | ||
4aa7a7f5 JJ |
4492 | static int |
4493 | debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr) | |
ccaa32c7 | 4494 | { |
4aa7a7f5 | 4495 | int retval; |
ccaa32c7 | 4496 | |
4aa7a7f5 | 4497 | retval = debug_target.to_stopped_data_address (target, addr); |
ccaa32c7 GS |
4498 | |
4499 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4500 | "target_stopped_data_address ([%s]) = %ld\n", |
4501 | core_addr_to_string (*addr), | |
4aa7a7f5 | 4502 | (unsigned long)retval); |
ccaa32c7 GS |
4503 | return retval; |
4504 | } | |
4505 | ||
5009afc5 AS |
4506 | static int |
4507 | debug_to_watchpoint_addr_within_range (struct target_ops *target, | |
4508 | CORE_ADDR addr, | |
4509 | CORE_ADDR start, int length) | |
4510 | { | |
4511 | int retval; | |
4512 | ||
4513 | retval = debug_target.to_watchpoint_addr_within_range (target, addr, | |
4514 | start, length); | |
4515 | ||
4516 | fprintf_filtered (gdb_stdlog, | |
bd91e7ae OS |
4517 | "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n", |
4518 | core_addr_to_string (addr), core_addr_to_string (start), | |
4519 | length, retval); | |
5009afc5 AS |
4520 | return retval; |
4521 | } | |
4522 | ||
ccaa32c7 | 4523 | static int |
23a26771 TT |
4524 | debug_to_insert_hw_breakpoint (struct target_ops *self, |
4525 | struct gdbarch *gdbarch, | |
a6d9a66e | 4526 | struct bp_target_info *bp_tgt) |
ccaa32c7 GS |
4527 | { |
4528 | int retval; | |
4529 | ||
23a26771 TT |
4530 | retval = debug_target.to_insert_hw_breakpoint (&debug_target, |
4531 | gdbarch, bp_tgt); | |
ccaa32c7 GS |
4532 | |
4533 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4534 | "target_insert_hw_breakpoint (%s, xxx) = %ld\n", |
4535 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
4536 | (unsigned long) retval); |
4537 | return retval; | |
4538 | } | |
4539 | ||
4540 | static int | |
a64dc96c TT |
4541 | debug_to_remove_hw_breakpoint (struct target_ops *self, |
4542 | struct gdbarch *gdbarch, | |
a6d9a66e | 4543 | struct bp_target_info *bp_tgt) |
ccaa32c7 GS |
4544 | { |
4545 | int retval; | |
4546 | ||
a64dc96c TT |
4547 | retval = debug_target.to_remove_hw_breakpoint (&debug_target, |
4548 | gdbarch, bp_tgt); | |
ccaa32c7 GS |
4549 | |
4550 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4551 | "target_remove_hw_breakpoint (%s, xxx) = %ld\n", |
4552 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
4553 | (unsigned long) retval); |
4554 | return retval; | |
4555 | } | |
4556 | ||
4557 | static int | |
7bb99c53 TT |
4558 | debug_to_insert_watchpoint (struct target_ops *self, |
4559 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 4560 | struct expression *cond) |
ccaa32c7 GS |
4561 | { |
4562 | int retval; | |
4563 | ||
7bb99c53 TT |
4564 | retval = debug_target.to_insert_watchpoint (&debug_target, |
4565 | addr, len, type, cond); | |
ccaa32c7 GS |
4566 | |
4567 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4568 | "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n", |
4569 | core_addr_to_string (addr), len, type, | |
4570 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
4571 | return retval; |
4572 | } | |
4573 | ||
4574 | static int | |
11b5219a TT |
4575 | debug_to_remove_watchpoint (struct target_ops *self, |
4576 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 4577 | struct expression *cond) |
ccaa32c7 GS |
4578 | { |
4579 | int retval; | |
4580 | ||
11b5219a TT |
4581 | retval = debug_target.to_remove_watchpoint (&debug_target, |
4582 | addr, len, type, cond); | |
ccaa32c7 GS |
4583 | |
4584 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4585 | "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n", |
4586 | core_addr_to_string (addr), len, type, | |
4587 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
4588 | return retval; |
4589 | } | |
4590 | ||
c906108c | 4591 | static void |
c42bf286 | 4592 | debug_to_terminal_init (struct target_ops *self) |
c906108c | 4593 | { |
c42bf286 | 4594 | debug_target.to_terminal_init (&debug_target); |
c906108c | 4595 | |
96baa820 | 4596 | fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n"); |
c906108c SS |
4597 | } |
4598 | ||
4599 | static void | |
d2f640d4 | 4600 | debug_to_terminal_inferior (struct target_ops *self) |
c906108c | 4601 | { |
d2f640d4 | 4602 | debug_target.to_terminal_inferior (&debug_target); |
c906108c | 4603 | |
96baa820 | 4604 | fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n"); |
c906108c SS |
4605 | } |
4606 | ||
4607 | static void | |
2e1e1a19 | 4608 | debug_to_terminal_ours_for_output (struct target_ops *self) |
c906108c | 4609 | { |
2e1e1a19 | 4610 | debug_target.to_terminal_ours_for_output (&debug_target); |
c906108c | 4611 | |
96baa820 | 4612 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n"); |
c906108c SS |
4613 | } |
4614 | ||
4615 | static void | |
e3594fd1 | 4616 | debug_to_terminal_ours (struct target_ops *self) |
c906108c | 4617 | { |
e3594fd1 | 4618 | debug_target.to_terminal_ours (&debug_target); |
c906108c | 4619 | |
96baa820 | 4620 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n"); |
c906108c SS |
4621 | } |
4622 | ||
a790ad35 | 4623 | static void |
ae3bd431 | 4624 | debug_to_terminal_save_ours (struct target_ops *self) |
a790ad35 | 4625 | { |
ae3bd431 | 4626 | debug_target.to_terminal_save_ours (&debug_target); |
a790ad35 SC |
4627 | |
4628 | fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n"); | |
4629 | } | |
4630 | ||
c906108c | 4631 | static void |
0a4f40a2 TT |
4632 | debug_to_terminal_info (struct target_ops *self, |
4633 | const char *arg, int from_tty) | |
c906108c | 4634 | { |
0a4f40a2 | 4635 | debug_target.to_terminal_info (&debug_target, arg, from_tty); |
c906108c | 4636 | |
96baa820 | 4637 | fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg, |
c906108c SS |
4638 | from_tty); |
4639 | } | |
4640 | ||
c906108c | 4641 | static void |
71a9f134 | 4642 | debug_to_load (struct target_ops *self, char *args, int from_tty) |
c906108c | 4643 | { |
71a9f134 | 4644 | debug_target.to_load (&debug_target, args, from_tty); |
c906108c | 4645 | |
96baa820 | 4646 | fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty); |
c906108c SS |
4647 | } |
4648 | ||
c906108c | 4649 | static void |
2e97a79e | 4650 | debug_to_post_startup_inferior (struct target_ops *self, ptid_t ptid) |
c906108c | 4651 | { |
2e97a79e | 4652 | debug_target.to_post_startup_inferior (&debug_target, ptid); |
c906108c | 4653 | |
96baa820 | 4654 | fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n", |
dfd4cc63 | 4655 | ptid_get_pid (ptid)); |
c906108c SS |
4656 | } |
4657 | ||
77b06cd7 | 4658 | static int |
a863b201 | 4659 | debug_to_insert_fork_catchpoint (struct target_ops *self, int pid) |
c906108c | 4660 | { |
77b06cd7 TJB |
4661 | int retval; |
4662 | ||
a863b201 | 4663 | retval = debug_target.to_insert_fork_catchpoint (&debug_target, pid); |
77b06cd7 TJB |
4664 | |
4665 | fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d) = %d\n", | |
4666 | pid, retval); | |
c906108c | 4667 | |
77b06cd7 | 4668 | return retval; |
c906108c SS |
4669 | } |
4670 | ||
4671 | static int | |
973fc227 | 4672 | debug_to_remove_fork_catchpoint (struct target_ops *self, int pid) |
c906108c | 4673 | { |
c5aa993b | 4674 | int retval; |
c906108c | 4675 | |
973fc227 | 4676 | retval = debug_target.to_remove_fork_catchpoint (&debug_target, pid); |
c906108c | 4677 | |
96baa820 | 4678 | fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n", |
c5aa993b | 4679 | pid, retval); |
c906108c SS |
4680 | |
4681 | return retval; | |
4682 | } | |
4683 | ||
77b06cd7 | 4684 | static int |
3ecc7da0 | 4685 | debug_to_insert_vfork_catchpoint (struct target_ops *self, int pid) |
c906108c | 4686 | { |
77b06cd7 TJB |
4687 | int retval; |
4688 | ||
3ecc7da0 | 4689 | retval = debug_target.to_insert_vfork_catchpoint (&debug_target, pid); |
c906108c | 4690 | |
77b06cd7 TJB |
4691 | fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d) = %d\n", |
4692 | pid, retval); | |
4693 | ||
4694 | return retval; | |
c906108c SS |
4695 | } |
4696 | ||
4697 | static int | |
e98cf0cd | 4698 | debug_to_remove_vfork_catchpoint (struct target_ops *self, int pid) |
c906108c | 4699 | { |
c5aa993b | 4700 | int retval; |
c906108c | 4701 | |
e98cf0cd | 4702 | retval = debug_target.to_remove_vfork_catchpoint (&debug_target, pid); |
c906108c | 4703 | |
96baa820 | 4704 | fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n", |
c5aa993b | 4705 | pid, retval); |
c906108c SS |
4706 | |
4707 | return retval; | |
4708 | } | |
4709 | ||
77b06cd7 | 4710 | static int |
ba025e51 | 4711 | debug_to_insert_exec_catchpoint (struct target_ops *self, int pid) |
c906108c | 4712 | { |
77b06cd7 TJB |
4713 | int retval; |
4714 | ||
ba025e51 | 4715 | retval = debug_target.to_insert_exec_catchpoint (&debug_target, pid); |
c906108c | 4716 | |
77b06cd7 TJB |
4717 | fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d) = %d\n", |
4718 | pid, retval); | |
4719 | ||
4720 | return retval; | |
c906108c SS |
4721 | } |
4722 | ||
4723 | static int | |
758e29d2 | 4724 | debug_to_remove_exec_catchpoint (struct target_ops *self, int pid) |
c906108c | 4725 | { |
c5aa993b | 4726 | int retval; |
c906108c | 4727 | |
758e29d2 | 4728 | retval = debug_target.to_remove_exec_catchpoint (&debug_target, pid); |
c906108c | 4729 | |
96baa820 | 4730 | fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n", |
c5aa993b | 4731 | pid, retval); |
c906108c SS |
4732 | |
4733 | return retval; | |
4734 | } | |
4735 | ||
c906108c | 4736 | static int |
d796e1d6 TT |
4737 | debug_to_has_exited (struct target_ops *self, |
4738 | int pid, int wait_status, int *exit_status) | |
c906108c | 4739 | { |
c5aa993b | 4740 | int has_exited; |
c906108c | 4741 | |
d796e1d6 TT |
4742 | has_exited = debug_target.to_has_exited (&debug_target, |
4743 | pid, wait_status, exit_status); | |
c906108c | 4744 | |
96baa820 | 4745 | fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n", |
c5aa993b | 4746 | pid, wait_status, *exit_status, has_exited); |
c906108c SS |
4747 | |
4748 | return has_exited; | |
4749 | } | |
4750 | ||
c906108c | 4751 | static int |
da82bd6b | 4752 | debug_to_can_run (struct target_ops *self) |
c906108c SS |
4753 | { |
4754 | int retval; | |
4755 | ||
da82bd6b | 4756 | retval = debug_target.to_can_run (&debug_target); |
c906108c | 4757 | |
96baa820 | 4758 | fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval); |
c906108c SS |
4759 | |
4760 | return retval; | |
4761 | } | |
4762 | ||
c2250ad1 UW |
4763 | static struct gdbarch * |
4764 | debug_to_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
4765 | { | |
4766 | struct gdbarch *retval; | |
4767 | ||
4768 | retval = debug_target.to_thread_architecture (ops, ptid); | |
4769 | ||
3e43a32a MS |
4770 | fprintf_unfiltered (gdb_stdlog, |
4771 | "target_thread_architecture (%s) = %s [%s]\n", | |
4772 | target_pid_to_str (ptid), | |
4773 | host_address_to_string (retval), | |
c2250ad1 UW |
4774 | gdbarch_bfd_arch_info (retval)->printable_name); |
4775 | return retval; | |
4776 | } | |
4777 | ||
c906108c | 4778 | static void |
1eab8a48 | 4779 | debug_to_stop (struct target_ops *self, ptid_t ptid) |
c906108c | 4780 | { |
1eab8a48 | 4781 | debug_target.to_stop (&debug_target, ptid); |
c906108c | 4782 | |
94cc34af PA |
4783 | fprintf_unfiltered (gdb_stdlog, "target_stop (%s)\n", |
4784 | target_pid_to_str (ptid)); | |
c906108c SS |
4785 | } |
4786 | ||
96baa820 | 4787 | static void |
1aac633b | 4788 | debug_to_rcmd (struct target_ops *self, char *command, |
d9fcf2fb | 4789 | struct ui_file *outbuf) |
96baa820 | 4790 | { |
1aac633b | 4791 | debug_target.to_rcmd (&debug_target, command, outbuf); |
96baa820 JM |
4792 | fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command); |
4793 | } | |
4794 | ||
c906108c | 4795 | static char * |
8dd27370 | 4796 | debug_to_pid_to_exec_file (struct target_ops *self, int pid) |
c906108c | 4797 | { |
c5aa993b | 4798 | char *exec_file; |
c906108c | 4799 | |
8dd27370 | 4800 | exec_file = debug_target.to_pid_to_exec_file (&debug_target, pid); |
c906108c | 4801 | |
96baa820 | 4802 | fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n", |
c5aa993b | 4803 | pid, exec_file); |
c906108c SS |
4804 | |
4805 | return exec_file; | |
4806 | } | |
4807 | ||
c906108c | 4808 | static void |
fba45db2 | 4809 | setup_target_debug (void) |
c906108c SS |
4810 | { |
4811 | memcpy (&debug_target, ¤t_target, sizeof debug_target); | |
4812 | ||
4813 | current_target.to_open = debug_to_open; | |
c906108c | 4814 | current_target.to_post_attach = debug_to_post_attach; |
c906108c | 4815 | current_target.to_prepare_to_store = debug_to_prepare_to_store; |
c8e73a31 | 4816 | current_target.deprecated_xfer_memory = deprecated_debug_xfer_memory; |
c906108c SS |
4817 | current_target.to_files_info = debug_to_files_info; |
4818 | current_target.to_insert_breakpoint = debug_to_insert_breakpoint; | |
4819 | current_target.to_remove_breakpoint = debug_to_remove_breakpoint; | |
ccaa32c7 GS |
4820 | current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint; |
4821 | current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint; | |
4822 | current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint; | |
4823 | current_target.to_insert_watchpoint = debug_to_insert_watchpoint; | |
4824 | current_target.to_remove_watchpoint = debug_to_remove_watchpoint; | |
4825 | current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint; | |
4826 | current_target.to_stopped_data_address = debug_to_stopped_data_address; | |
3e43a32a MS |
4827 | current_target.to_watchpoint_addr_within_range |
4828 | = debug_to_watchpoint_addr_within_range; | |
4829 | current_target.to_region_ok_for_hw_watchpoint | |
4830 | = debug_to_region_ok_for_hw_watchpoint; | |
4831 | current_target.to_can_accel_watchpoint_condition | |
4832 | = debug_to_can_accel_watchpoint_condition; | |
c906108c SS |
4833 | current_target.to_terminal_init = debug_to_terminal_init; |
4834 | current_target.to_terminal_inferior = debug_to_terminal_inferior; | |
3e43a32a MS |
4835 | current_target.to_terminal_ours_for_output |
4836 | = debug_to_terminal_ours_for_output; | |
c906108c | 4837 | current_target.to_terminal_ours = debug_to_terminal_ours; |
a790ad35 | 4838 | current_target.to_terminal_save_ours = debug_to_terminal_save_ours; |
c906108c | 4839 | current_target.to_terminal_info = debug_to_terminal_info; |
c906108c | 4840 | current_target.to_load = debug_to_load; |
c906108c | 4841 | current_target.to_post_startup_inferior = debug_to_post_startup_inferior; |
c906108c SS |
4842 | current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint; |
4843 | current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint; | |
4844 | current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint; | |
4845 | current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint; | |
c906108c SS |
4846 | current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint; |
4847 | current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint; | |
c906108c | 4848 | current_target.to_has_exited = debug_to_has_exited; |
c906108c | 4849 | current_target.to_can_run = debug_to_can_run; |
c906108c | 4850 | current_target.to_stop = debug_to_stop; |
96baa820 | 4851 | current_target.to_rcmd = debug_to_rcmd; |
c906108c | 4852 | current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file; |
c2250ad1 | 4853 | current_target.to_thread_architecture = debug_to_thread_architecture; |
c906108c | 4854 | } |
c906108c | 4855 | \f |
c5aa993b JM |
4856 | |
4857 | static char targ_desc[] = | |
3e43a32a MS |
4858 | "Names of targets and files being debugged.\nShows the entire \ |
4859 | stack of targets currently in use (including the exec-file,\n\ | |
c906108c SS |
4860 | core-file, and process, if any), as well as the symbol file name."; |
4861 | ||
a53f3625 TT |
4862 | static void |
4863 | default_rcmd (struct target_ops *self, char *command, struct ui_file *output) | |
4864 | { | |
4865 | error (_("\"monitor\" command not supported by this target.")); | |
4866 | } | |
4867 | ||
96baa820 JM |
4868 | static void |
4869 | do_monitor_command (char *cmd, | |
4870 | int from_tty) | |
4871 | { | |
96baa820 JM |
4872 | target_rcmd (cmd, gdb_stdtarg); |
4873 | } | |
4874 | ||
87680a14 JB |
4875 | /* Print the name of each layers of our target stack. */ |
4876 | ||
4877 | static void | |
4878 | maintenance_print_target_stack (char *cmd, int from_tty) | |
4879 | { | |
4880 | struct target_ops *t; | |
4881 | ||
4882 | printf_filtered (_("The current target stack is:\n")); | |
4883 | ||
4884 | for (t = target_stack; t != NULL; t = t->beneath) | |
4885 | { | |
4886 | printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname); | |
4887 | } | |
4888 | } | |
4889 | ||
c6ebd6cf VP |
4890 | /* Controls if async mode is permitted. */ |
4891 | int target_async_permitted = 0; | |
4892 | ||
4893 | /* The set command writes to this variable. If the inferior is | |
b5419e49 | 4894 | executing, target_async_permitted is *not* updated. */ |
c6ebd6cf VP |
4895 | static int target_async_permitted_1 = 0; |
4896 | ||
4897 | static void | |
9401a810 PA |
4898 | set_target_async_command (char *args, int from_tty, |
4899 | struct cmd_list_element *c) | |
c6ebd6cf | 4900 | { |
c35b1492 | 4901 | if (have_live_inferiors ()) |
c6ebd6cf VP |
4902 | { |
4903 | target_async_permitted_1 = target_async_permitted; | |
4904 | error (_("Cannot change this setting while the inferior is running.")); | |
4905 | } | |
4906 | ||
4907 | target_async_permitted = target_async_permitted_1; | |
4908 | } | |
4909 | ||
4910 | static void | |
9401a810 PA |
4911 | show_target_async_command (struct ui_file *file, int from_tty, |
4912 | struct cmd_list_element *c, | |
4913 | const char *value) | |
c6ebd6cf | 4914 | { |
3e43a32a MS |
4915 | fprintf_filtered (file, |
4916 | _("Controlling the inferior in " | |
4917 | "asynchronous mode is %s.\n"), value); | |
c6ebd6cf VP |
4918 | } |
4919 | ||
d914c394 SS |
4920 | /* Temporary copies of permission settings. */ |
4921 | ||
4922 | static int may_write_registers_1 = 1; | |
4923 | static int may_write_memory_1 = 1; | |
4924 | static int may_insert_breakpoints_1 = 1; | |
4925 | static int may_insert_tracepoints_1 = 1; | |
4926 | static int may_insert_fast_tracepoints_1 = 1; | |
4927 | static int may_stop_1 = 1; | |
4928 | ||
4929 | /* Make the user-set values match the real values again. */ | |
4930 | ||
4931 | void | |
4932 | update_target_permissions (void) | |
4933 | { | |
4934 | may_write_registers_1 = may_write_registers; | |
4935 | may_write_memory_1 = may_write_memory; | |
4936 | may_insert_breakpoints_1 = may_insert_breakpoints; | |
4937 | may_insert_tracepoints_1 = may_insert_tracepoints; | |
4938 | may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints; | |
4939 | may_stop_1 = may_stop; | |
4940 | } | |
4941 | ||
4942 | /* The one function handles (most of) the permission flags in the same | |
4943 | way. */ | |
4944 | ||
4945 | static void | |
4946 | set_target_permissions (char *args, int from_tty, | |
4947 | struct cmd_list_element *c) | |
4948 | { | |
4949 | if (target_has_execution) | |
4950 | { | |
4951 | update_target_permissions (); | |
4952 | error (_("Cannot change this setting while the inferior is running.")); | |
4953 | } | |
4954 | ||
4955 | /* Make the real values match the user-changed values. */ | |
4956 | may_write_registers = may_write_registers_1; | |
4957 | may_insert_breakpoints = may_insert_breakpoints_1; | |
4958 | may_insert_tracepoints = may_insert_tracepoints_1; | |
4959 | may_insert_fast_tracepoints = may_insert_fast_tracepoints_1; | |
4960 | may_stop = may_stop_1; | |
4961 | update_observer_mode (); | |
4962 | } | |
4963 | ||
4964 | /* Set memory write permission independently of observer mode. */ | |
4965 | ||
4966 | static void | |
4967 | set_write_memory_permission (char *args, int from_tty, | |
4968 | struct cmd_list_element *c) | |
4969 | { | |
4970 | /* Make the real values match the user-changed values. */ | |
4971 | may_write_memory = may_write_memory_1; | |
4972 | update_observer_mode (); | |
4973 | } | |
4974 | ||
4975 | ||
c906108c | 4976 | void |
fba45db2 | 4977 | initialize_targets (void) |
c906108c SS |
4978 | { |
4979 | init_dummy_target (); | |
4980 | push_target (&dummy_target); | |
4981 | ||
4982 | add_info ("target", target_info, targ_desc); | |
4983 | add_info ("files", target_info, targ_desc); | |
4984 | ||
ccce17b0 | 4985 | add_setshow_zuinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
85c07804 AC |
4986 | Set target debugging."), _("\ |
4987 | Show target debugging."), _("\ | |
333dabeb DJ |
4988 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
4989 | verbose. Changes do not take effect until the next \"run\" or \"target\"\n\ | |
85c07804 | 4990 | command."), |
ccce17b0 YQ |
4991 | NULL, |
4992 | show_targetdebug, | |
4993 | &setdebuglist, &showdebuglist); | |
3a11626d | 4994 | |
2bc416ba | 4995 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
4996 | &trust_readonly, _("\ |
4997 | Set mode for reading from readonly sections."), _("\ | |
4998 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
4999 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
5000 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 5001 | result in significant performance improvement for remote targets."), |
2c5b56ce | 5002 | NULL, |
920d2a44 | 5003 | show_trust_readonly, |
e707bbc2 | 5004 | &setlist, &showlist); |
96baa820 JM |
5005 | |
5006 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 5007 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 5008 | |
87680a14 JB |
5009 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
5010 | _("Print the name of each layer of the internal target stack."), | |
5011 | &maintenanceprintlist); | |
5012 | ||
c6ebd6cf VP |
5013 | add_setshow_boolean_cmd ("target-async", no_class, |
5014 | &target_async_permitted_1, _("\ | |
5015 | Set whether gdb controls the inferior in asynchronous mode."), _("\ | |
5016 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
5017 | Tells gdb whether to control the inferior in asynchronous mode."), | |
9401a810 PA |
5018 | set_target_async_command, |
5019 | show_target_async_command, | |
c6ebd6cf VP |
5020 | &setlist, |
5021 | &showlist); | |
5022 | ||
d914c394 SS |
5023 | add_setshow_boolean_cmd ("may-write-registers", class_support, |
5024 | &may_write_registers_1, _("\ | |
5025 | Set permission to write into registers."), _("\ | |
5026 | Show permission to write into registers."), _("\ | |
5027 | When this permission is on, GDB may write into the target's registers.\n\ | |
5028 | Otherwise, any sort of write attempt will result in an error."), | |
5029 | set_target_permissions, NULL, | |
5030 | &setlist, &showlist); | |
5031 | ||
5032 | add_setshow_boolean_cmd ("may-write-memory", class_support, | |
5033 | &may_write_memory_1, _("\ | |
5034 | Set permission to write into target memory."), _("\ | |
5035 | Show permission to write into target memory."), _("\ | |
5036 | When this permission is on, GDB may write into the target's memory.\n\ | |
5037 | Otherwise, any sort of write attempt will result in an error."), | |
5038 | set_write_memory_permission, NULL, | |
5039 | &setlist, &showlist); | |
5040 | ||
5041 | add_setshow_boolean_cmd ("may-insert-breakpoints", class_support, | |
5042 | &may_insert_breakpoints_1, _("\ | |
5043 | Set permission to insert breakpoints in the target."), _("\ | |
5044 | Show permission to insert breakpoints in the target."), _("\ | |
5045 | When this permission is on, GDB may insert breakpoints in the program.\n\ | |
5046 | Otherwise, any sort of insertion attempt will result in an error."), | |
5047 | set_target_permissions, NULL, | |
5048 | &setlist, &showlist); | |
5049 | ||
5050 | add_setshow_boolean_cmd ("may-insert-tracepoints", class_support, | |
5051 | &may_insert_tracepoints_1, _("\ | |
5052 | Set permission to insert tracepoints in the target."), _("\ | |
5053 | Show permission to insert tracepoints in the target."), _("\ | |
5054 | When this permission is on, GDB may insert tracepoints in the program.\n\ | |
5055 | Otherwise, any sort of insertion attempt will result in an error."), | |
5056 | set_target_permissions, NULL, | |
5057 | &setlist, &showlist); | |
5058 | ||
5059 | add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support, | |
5060 | &may_insert_fast_tracepoints_1, _("\ | |
5061 | Set permission to insert fast tracepoints in the target."), _("\ | |
5062 | Show permission to insert fast tracepoints in the target."), _("\ | |
5063 | When this permission is on, GDB may insert fast tracepoints.\n\ | |
5064 | Otherwise, any sort of insertion attempt will result in an error."), | |
5065 | set_target_permissions, NULL, | |
5066 | &setlist, &showlist); | |
5067 | ||
5068 | add_setshow_boolean_cmd ("may-interrupt", class_support, | |
5069 | &may_stop_1, _("\ | |
5070 | Set permission to interrupt or signal the target."), _("\ | |
5071 | Show permission to interrupt or signal the target."), _("\ | |
5072 | When this permission is on, GDB may interrupt/stop the target's execution.\n\ | |
5073 | Otherwise, any attempt to interrupt or stop will be ignored."), | |
5074 | set_target_permissions, NULL, | |
5075 | &setlist, &showlist); | |
c906108c | 5076 | } |