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 | ||
c25c4a8b | 60 | static void tcomplain (void) ATTRIBUTE_NORETURN; |
c906108c | 61 | |
a14ed312 | 62 | static int nomemory (CORE_ADDR, char *, int, int, struct target_ops *); |
c906108c | 63 | |
a14ed312 | 64 | static int return_zero (void); |
c906108c | 65 | |
ccaa32c7 GS |
66 | static int return_minus_one (void); |
67 | ||
1b67eb02 AS |
68 | static void *return_null (void); |
69 | ||
a14ed312 | 70 | void target_ignore (void); |
c906108c | 71 | |
a14ed312 | 72 | static void target_command (char *, int); |
c906108c | 73 | |
a14ed312 | 74 | static struct target_ops *find_default_run_target (char *); |
c906108c | 75 | |
4ac248ca YQ |
76 | static target_xfer_partial_ftype default_xfer_partial; |
77 | ||
c2250ad1 UW |
78 | static struct gdbarch *default_thread_architecture (struct target_ops *ops, |
79 | ptid_t ptid); | |
80 | ||
0b5a2719 TT |
81 | static int dummy_find_memory_regions (struct target_ops *self, |
82 | find_memory_region_ftype ignore1, | |
83 | void *ignore2); | |
84 | ||
16f796b1 TT |
85 | static char *dummy_make_corefile_notes (struct target_ops *self, |
86 | bfd *ignore1, int *ignore2); | |
87 | ||
6b84065d TT |
88 | static int find_default_can_async_p (struct target_ops *ignore); |
89 | ||
90 | static int find_default_is_async_p (struct target_ops *ignore); | |
91 | ||
fe31bf5b TT |
92 | static enum exec_direction_kind default_execution_direction |
93 | (struct target_ops *self); | |
94 | ||
1101cb7b TT |
95 | #include "target-delegates.c" |
96 | ||
a14ed312 | 97 | static void init_dummy_target (void); |
c906108c | 98 | |
aa869812 AC |
99 | static struct target_ops debug_target; |
100 | ||
a14ed312 | 101 | static void debug_to_open (char *, int); |
c906108c | 102 | |
f32dbf8c MM |
103 | static void debug_to_prepare_to_store (struct target_ops *self, |
104 | struct regcache *); | |
c906108c | 105 | |
a14ed312 | 106 | static void debug_to_files_info (struct target_ops *); |
c906108c | 107 | |
3db08215 | 108 | static int debug_to_insert_breakpoint (struct target_ops *, struct gdbarch *, |
a6d9a66e | 109 | struct bp_target_info *); |
c906108c | 110 | |
3db08215 | 111 | static int debug_to_remove_breakpoint (struct target_ops *, struct gdbarch *, |
a6d9a66e | 112 | struct bp_target_info *); |
c906108c | 113 | |
5461485a TT |
114 | static int debug_to_can_use_hw_breakpoint (struct target_ops *self, |
115 | int, int, int); | |
ccaa32c7 | 116 | |
23a26771 TT |
117 | static int debug_to_insert_hw_breakpoint (struct target_ops *self, |
118 | struct gdbarch *, | |
a6d9a66e | 119 | struct bp_target_info *); |
ccaa32c7 | 120 | |
a64dc96c TT |
121 | static int debug_to_remove_hw_breakpoint (struct target_ops *self, |
122 | struct gdbarch *, | |
a6d9a66e | 123 | struct bp_target_info *); |
ccaa32c7 | 124 | |
7bb99c53 TT |
125 | static int debug_to_insert_watchpoint (struct target_ops *self, |
126 | CORE_ADDR, int, int, | |
0cf6dd15 | 127 | struct expression *); |
ccaa32c7 | 128 | |
11b5219a TT |
129 | static int debug_to_remove_watchpoint (struct target_ops *self, |
130 | CORE_ADDR, int, int, | |
0cf6dd15 | 131 | struct expression *); |
ccaa32c7 | 132 | |
4aa7a7f5 | 133 | static int debug_to_stopped_data_address (struct target_ops *, CORE_ADDR *); |
ccaa32c7 | 134 | |
5009afc5 AS |
135 | static int debug_to_watchpoint_addr_within_range (struct target_ops *, |
136 | CORE_ADDR, CORE_ADDR, int); | |
137 | ||
31568a15 TT |
138 | static int debug_to_region_ok_for_hw_watchpoint (struct target_ops *self, |
139 | CORE_ADDR, int); | |
e0d24f8d | 140 | |
c3a5ff89 TT |
141 | static int debug_to_can_accel_watchpoint_condition (struct target_ops *self, |
142 | CORE_ADDR, int, int, | |
0cf6dd15 TJB |
143 | struct expression *); |
144 | ||
c42bf286 | 145 | static void debug_to_terminal_init (struct target_ops *self); |
c906108c | 146 | |
d2f640d4 | 147 | static void debug_to_terminal_inferior (struct target_ops *self); |
c906108c | 148 | |
2e1e1a19 | 149 | static void debug_to_terminal_ours_for_output (struct target_ops *self); |
c906108c | 150 | |
ae3bd431 | 151 | static void debug_to_terminal_save_ours (struct target_ops *self); |
a790ad35 | 152 | |
e3594fd1 | 153 | static void debug_to_terminal_ours (struct target_ops *self); |
c906108c | 154 | |
71a9f134 | 155 | static void debug_to_load (struct target_ops *self, char *, int); |
c906108c | 156 | |
da82bd6b | 157 | static int debug_to_can_run (struct target_ops *self); |
c906108c | 158 | |
1eab8a48 | 159 | static void debug_to_stop (struct target_ops *self, ptid_t); |
c906108c | 160 | |
c906108c | 161 | /* Pointer to array of target architecture structures; the size of the |
2bc416ba | 162 | array; the current index into the array; the allocated size of the |
c906108c SS |
163 | array. */ |
164 | struct target_ops **target_structs; | |
165 | unsigned target_struct_size; | |
c906108c SS |
166 | unsigned target_struct_allocsize; |
167 | #define DEFAULT_ALLOCSIZE 10 | |
168 | ||
169 | /* The initial current target, so that there is always a semi-valid | |
170 | current target. */ | |
171 | ||
172 | static struct target_ops dummy_target; | |
173 | ||
174 | /* Top of target stack. */ | |
175 | ||
258b763a | 176 | static struct target_ops *target_stack; |
c906108c SS |
177 | |
178 | /* The target structure we are currently using to talk to a process | |
179 | or file or whatever "inferior" we have. */ | |
180 | ||
181 | struct target_ops current_target; | |
182 | ||
183 | /* Command list for target. */ | |
184 | ||
185 | static struct cmd_list_element *targetlist = NULL; | |
186 | ||
cf7a04e8 DJ |
187 | /* Nonzero if we should trust readonly sections from the |
188 | executable when reading memory. */ | |
189 | ||
190 | static int trust_readonly = 0; | |
191 | ||
8defab1a DJ |
192 | /* Nonzero if we should show true memory content including |
193 | memory breakpoint inserted by gdb. */ | |
194 | ||
195 | static int show_memory_breakpoints = 0; | |
196 | ||
d914c394 SS |
197 | /* These globals control whether GDB attempts to perform these |
198 | operations; they are useful for targets that need to prevent | |
199 | inadvertant disruption, such as in non-stop mode. */ | |
200 | ||
201 | int may_write_registers = 1; | |
202 | ||
203 | int may_write_memory = 1; | |
204 | ||
205 | int may_insert_breakpoints = 1; | |
206 | ||
207 | int may_insert_tracepoints = 1; | |
208 | ||
209 | int may_insert_fast_tracepoints = 1; | |
210 | ||
211 | int may_stop = 1; | |
212 | ||
c906108c SS |
213 | /* Non-zero if we want to see trace of target level stuff. */ |
214 | ||
ccce17b0 | 215 | static unsigned int targetdebug = 0; |
920d2a44 AC |
216 | static void |
217 | show_targetdebug (struct ui_file *file, int from_tty, | |
218 | struct cmd_list_element *c, const char *value) | |
219 | { | |
220 | fprintf_filtered (file, _("Target debugging is %s.\n"), value); | |
221 | } | |
c906108c | 222 | |
a14ed312 | 223 | static void setup_target_debug (void); |
c906108c | 224 | |
c906108c SS |
225 | /* The user just typed 'target' without the name of a target. */ |
226 | ||
c906108c | 227 | static void |
fba45db2 | 228 | target_command (char *arg, int from_tty) |
c906108c SS |
229 | { |
230 | fputs_filtered ("Argument required (target name). Try `help target'\n", | |
231 | gdb_stdout); | |
232 | } | |
233 | ||
c35b1492 PA |
234 | /* Default target_has_* methods for process_stratum targets. */ |
235 | ||
236 | int | |
237 | default_child_has_all_memory (struct target_ops *ops) | |
238 | { | |
239 | /* If no inferior selected, then we can't read memory here. */ | |
240 | if (ptid_equal (inferior_ptid, null_ptid)) | |
241 | return 0; | |
242 | ||
243 | return 1; | |
244 | } | |
245 | ||
246 | int | |
247 | default_child_has_memory (struct target_ops *ops) | |
248 | { | |
249 | /* If no inferior selected, then we can't read memory here. */ | |
250 | if (ptid_equal (inferior_ptid, null_ptid)) | |
251 | return 0; | |
252 | ||
253 | return 1; | |
254 | } | |
255 | ||
256 | int | |
257 | default_child_has_stack (struct target_ops *ops) | |
258 | { | |
259 | /* If no inferior selected, there's no stack. */ | |
260 | if (ptid_equal (inferior_ptid, null_ptid)) | |
261 | return 0; | |
262 | ||
263 | return 1; | |
264 | } | |
265 | ||
266 | int | |
267 | default_child_has_registers (struct target_ops *ops) | |
268 | { | |
269 | /* Can't read registers from no inferior. */ | |
270 | if (ptid_equal (inferior_ptid, null_ptid)) | |
271 | return 0; | |
272 | ||
273 | return 1; | |
274 | } | |
275 | ||
276 | int | |
aeaec162 | 277 | default_child_has_execution (struct target_ops *ops, ptid_t the_ptid) |
c35b1492 PA |
278 | { |
279 | /* If there's no thread selected, then we can't make it run through | |
280 | hoops. */ | |
aeaec162 | 281 | if (ptid_equal (the_ptid, null_ptid)) |
c35b1492 PA |
282 | return 0; |
283 | ||
284 | return 1; | |
285 | } | |
286 | ||
287 | ||
288 | int | |
289 | target_has_all_memory_1 (void) | |
290 | { | |
291 | struct target_ops *t; | |
292 | ||
293 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
294 | if (t->to_has_all_memory (t)) | |
295 | return 1; | |
296 | ||
297 | return 0; | |
298 | } | |
299 | ||
300 | int | |
301 | target_has_memory_1 (void) | |
302 | { | |
303 | struct target_ops *t; | |
304 | ||
305 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
306 | if (t->to_has_memory (t)) | |
307 | return 1; | |
308 | ||
309 | return 0; | |
310 | } | |
311 | ||
312 | int | |
313 | target_has_stack_1 (void) | |
314 | { | |
315 | struct target_ops *t; | |
316 | ||
317 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
318 | if (t->to_has_stack (t)) | |
319 | return 1; | |
320 | ||
321 | return 0; | |
322 | } | |
323 | ||
324 | int | |
325 | target_has_registers_1 (void) | |
326 | { | |
327 | struct target_ops *t; | |
328 | ||
329 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
330 | if (t->to_has_registers (t)) | |
331 | return 1; | |
332 | ||
333 | return 0; | |
334 | } | |
335 | ||
336 | int | |
aeaec162 | 337 | target_has_execution_1 (ptid_t the_ptid) |
c35b1492 PA |
338 | { |
339 | struct target_ops *t; | |
340 | ||
341 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
aeaec162 | 342 | if (t->to_has_execution (t, the_ptid)) |
c35b1492 PA |
343 | return 1; |
344 | ||
345 | return 0; | |
346 | } | |
347 | ||
aeaec162 TT |
348 | int |
349 | target_has_execution_current (void) | |
350 | { | |
351 | return target_has_execution_1 (inferior_ptid); | |
352 | } | |
353 | ||
c22a2b88 TT |
354 | /* Complete initialization of T. This ensures that various fields in |
355 | T are set, if needed by the target implementation. */ | |
c906108c SS |
356 | |
357 | void | |
c22a2b88 | 358 | complete_target_initialization (struct target_ops *t) |
c906108c | 359 | { |
0088c768 | 360 | /* Provide default values for all "must have" methods. */ |
0b603eba AC |
361 | if (t->to_xfer_partial == NULL) |
362 | t->to_xfer_partial = default_xfer_partial; | |
0088c768 | 363 | |
c35b1492 PA |
364 | if (t->to_has_all_memory == NULL) |
365 | t->to_has_all_memory = (int (*) (struct target_ops *)) return_zero; | |
366 | ||
367 | if (t->to_has_memory == NULL) | |
368 | t->to_has_memory = (int (*) (struct target_ops *)) return_zero; | |
369 | ||
370 | if (t->to_has_stack == NULL) | |
371 | t->to_has_stack = (int (*) (struct target_ops *)) return_zero; | |
372 | ||
373 | if (t->to_has_registers == NULL) | |
374 | t->to_has_registers = (int (*) (struct target_ops *)) return_zero; | |
375 | ||
376 | if (t->to_has_execution == NULL) | |
aeaec162 | 377 | t->to_has_execution = (int (*) (struct target_ops *, ptid_t)) return_zero; |
1101cb7b TT |
378 | |
379 | install_delegators (t); | |
c22a2b88 TT |
380 | } |
381 | ||
382 | /* Add possible target architecture T to the list and add a new | |
383 | command 'target T->to_shortname'. Set COMPLETER as the command's | |
384 | completer if not NULL. */ | |
385 | ||
386 | void | |
387 | add_target_with_completer (struct target_ops *t, | |
388 | completer_ftype *completer) | |
389 | { | |
390 | struct cmd_list_element *c; | |
391 | ||
392 | complete_target_initialization (t); | |
c35b1492 | 393 | |
c906108c SS |
394 | if (!target_structs) |
395 | { | |
396 | target_struct_allocsize = DEFAULT_ALLOCSIZE; | |
397 | target_structs = (struct target_ops **) xmalloc | |
398 | (target_struct_allocsize * sizeof (*target_structs)); | |
399 | } | |
400 | if (target_struct_size >= target_struct_allocsize) | |
401 | { | |
402 | target_struct_allocsize *= 2; | |
403 | target_structs = (struct target_ops **) | |
c5aa993b JM |
404 | xrealloc ((char *) target_structs, |
405 | target_struct_allocsize * sizeof (*target_structs)); | |
c906108c SS |
406 | } |
407 | target_structs[target_struct_size++] = t; | |
c906108c SS |
408 | |
409 | if (targetlist == NULL) | |
1bedd215 AC |
410 | add_prefix_cmd ("target", class_run, target_command, _("\ |
411 | Connect to a target machine or process.\n\ | |
c906108c SS |
412 | The first argument is the type or protocol of the target machine.\n\ |
413 | Remaining arguments are interpreted by the target protocol. For more\n\ | |
414 | information on the arguments for a particular protocol, type\n\ | |
1bedd215 | 415 | `help target ' followed by the protocol name."), |
c906108c | 416 | &targetlist, "target ", 0, &cmdlist); |
9852c492 YQ |
417 | c = add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc, |
418 | &targetlist); | |
419 | if (completer != NULL) | |
420 | set_cmd_completer (c, completer); | |
421 | } | |
422 | ||
423 | /* Add a possible target architecture to the list. */ | |
424 | ||
425 | void | |
426 | add_target (struct target_ops *t) | |
427 | { | |
428 | add_target_with_completer (t, NULL); | |
c906108c SS |
429 | } |
430 | ||
b48d48eb MM |
431 | /* See target.h. */ |
432 | ||
433 | void | |
434 | add_deprecated_target_alias (struct target_ops *t, char *alias) | |
435 | { | |
436 | struct cmd_list_element *c; | |
437 | char *alt; | |
438 | ||
439 | /* If we use add_alias_cmd, here, we do not get the deprecated warning, | |
440 | see PR cli/15104. */ | |
441 | c = add_cmd (alias, no_class, t->to_open, t->to_doc, &targetlist); | |
442 | alt = xstrprintf ("target %s", t->to_shortname); | |
443 | deprecate_cmd (c, alt); | |
444 | } | |
445 | ||
c906108c SS |
446 | /* Stub functions */ |
447 | ||
448 | void | |
fba45db2 | 449 | target_ignore (void) |
c906108c SS |
450 | { |
451 | } | |
452 | ||
7d85a9c0 JB |
453 | void |
454 | target_kill (void) | |
455 | { | |
456 | struct target_ops *t; | |
457 | ||
458 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
459 | if (t->to_kill != NULL) | |
460 | { | |
461 | if (targetdebug) | |
462 | fprintf_unfiltered (gdb_stdlog, "target_kill ()\n"); | |
463 | ||
464 | t->to_kill (t); | |
465 | return; | |
466 | } | |
467 | ||
468 | noprocess (); | |
469 | } | |
470 | ||
11cf8741 JM |
471 | void |
472 | target_load (char *arg, int from_tty) | |
473 | { | |
4e5d721f | 474 | target_dcache_invalidate (); |
71a9f134 | 475 | (*current_target.to_load) (¤t_target, arg, from_tty); |
11cf8741 JM |
476 | } |
477 | ||
947b8855 PA |
478 | void |
479 | target_create_inferior (char *exec_file, char *args, | |
480 | char **env, int from_tty) | |
136d6dae VP |
481 | { |
482 | struct target_ops *t; | |
5d502164 | 483 | |
136d6dae VP |
484 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
485 | { | |
486 | if (t->to_create_inferior != NULL) | |
487 | { | |
488 | t->to_create_inferior (t, exec_file, args, env, from_tty); | |
947b8855 PA |
489 | if (targetdebug) |
490 | fprintf_unfiltered (gdb_stdlog, | |
491 | "target_create_inferior (%s, %s, xxx, %d)\n", | |
492 | exec_file, args, from_tty); | |
136d6dae VP |
493 | return; |
494 | } | |
495 | } | |
496 | ||
497 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 498 | _("could not find a target to create inferior")); |
136d6dae VP |
499 | } |
500 | ||
d9d2d8b6 PA |
501 | void |
502 | target_terminal_inferior (void) | |
503 | { | |
504 | /* A background resume (``run&'') should leave GDB in control of the | |
c378eb4e | 505 | terminal. Use target_can_async_p, not target_is_async_p, since at |
ba7f6c64 VP |
506 | this point the target is not async yet. However, if sync_execution |
507 | is not set, we know it will become async prior to resume. */ | |
508 | if (target_can_async_p () && !sync_execution) | |
d9d2d8b6 PA |
509 | return; |
510 | ||
511 | /* If GDB is resuming the inferior in the foreground, install | |
512 | inferior's terminal modes. */ | |
d2f640d4 | 513 | (*current_target.to_terminal_inferior) (¤t_target); |
d9d2d8b6 | 514 | } |
136d6dae | 515 | |
c906108c | 516 | static int |
fba45db2 KB |
517 | nomemory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
518 | struct target_ops *t) | |
c906108c | 519 | { |
c378eb4e MS |
520 | errno = EIO; /* Can't read/write this location. */ |
521 | return 0; /* No bytes handled. */ | |
c906108c SS |
522 | } |
523 | ||
524 | static void | |
fba45db2 | 525 | tcomplain (void) |
c906108c | 526 | { |
8a3fe4f8 | 527 | error (_("You can't do that when your target is `%s'"), |
c906108c SS |
528 | current_target.to_shortname); |
529 | } | |
530 | ||
531 | void | |
fba45db2 | 532 | noprocess (void) |
c906108c | 533 | { |
8a3fe4f8 | 534 | error (_("You can't do that without a process to debug.")); |
c906108c SS |
535 | } |
536 | ||
c906108c | 537 | static void |
0a4f40a2 | 538 | default_terminal_info (struct target_ops *self, const char *args, int from_tty) |
c906108c | 539 | { |
a3f17187 | 540 | printf_unfiltered (_("No saved terminal information.\n")); |
c906108c SS |
541 | } |
542 | ||
0ef643c8 JB |
543 | /* A default implementation for the to_get_ada_task_ptid target method. |
544 | ||
545 | This function builds the PTID by using both LWP and TID as part of | |
546 | the PTID lwp and tid elements. The pid used is the pid of the | |
547 | inferior_ptid. */ | |
548 | ||
2c0b251b | 549 | static ptid_t |
1e6b91a4 | 550 | default_get_ada_task_ptid (struct target_ops *self, long lwp, long tid) |
0ef643c8 JB |
551 | { |
552 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid); | |
553 | } | |
554 | ||
32231432 | 555 | static enum exec_direction_kind |
4c612759 | 556 | default_execution_direction (struct target_ops *self) |
32231432 PA |
557 | { |
558 | if (!target_can_execute_reverse) | |
559 | return EXEC_FORWARD; | |
560 | else if (!target_can_async_p ()) | |
561 | return EXEC_FORWARD; | |
562 | else | |
563 | gdb_assert_not_reached ("\ | |
564 | to_execution_direction must be implemented for reverse async"); | |
565 | } | |
566 | ||
7998dfc3 AC |
567 | /* Go through the target stack from top to bottom, copying over zero |
568 | entries in current_target, then filling in still empty entries. In | |
569 | effect, we are doing class inheritance through the pushed target | |
570 | vectors. | |
571 | ||
572 | NOTE: cagney/2003-10-17: The problem with this inheritance, as it | |
573 | is currently implemented, is that it discards any knowledge of | |
574 | which target an inherited method originally belonged to. | |
575 | Consequently, new new target methods should instead explicitly and | |
576 | locally search the target stack for the target that can handle the | |
577 | request. */ | |
c906108c SS |
578 | |
579 | static void | |
7998dfc3 | 580 | update_current_target (void) |
c906108c | 581 | { |
7998dfc3 AC |
582 | struct target_ops *t; |
583 | ||
08d8bcd7 | 584 | /* First, reset current's contents. */ |
7998dfc3 AC |
585 | memset (¤t_target, 0, sizeof (current_target)); |
586 | ||
1101cb7b TT |
587 | /* Install the delegators. */ |
588 | install_delegators (¤t_target); | |
589 | ||
7998dfc3 AC |
590 | #define INHERIT(FIELD, TARGET) \ |
591 | if (!current_target.FIELD) \ | |
592 | current_target.FIELD = (TARGET)->FIELD | |
593 | ||
594 | for (t = target_stack; t; t = t->beneath) | |
595 | { | |
596 | INHERIT (to_shortname, t); | |
597 | INHERIT (to_longname, t); | |
598 | INHERIT (to_doc, t); | |
b52323fa UW |
599 | /* Do not inherit to_open. */ |
600 | /* Do not inherit to_close. */ | |
136d6dae | 601 | /* Do not inherit to_attach. */ |
bebd3233 | 602 | /* Do not inherit to_post_attach. */ |
dc177b7a | 603 | INHERIT (to_attach_no_wait, t); |
136d6dae | 604 | /* Do not inherit to_detach. */ |
597320e7 | 605 | /* Do not inherit to_disconnect. */ |
28439f5e | 606 | /* Do not inherit to_resume. */ |
117de6a9 | 607 | /* Do not inherit to_wait. */ |
28439f5e PA |
608 | /* Do not inherit to_fetch_registers. */ |
609 | /* Do not inherit to_store_registers. */ | |
6c628163 | 610 | /* Do not inherit to_prepare_to_store. */ |
c8e73a31 | 611 | INHERIT (deprecated_xfer_memory, t); |
f86e59b2 | 612 | /* Do not inherit to_files_info. */ |
3db08215 MM |
613 | /* Do not inherit to_insert_breakpoint. */ |
614 | /* Do not inherit to_remove_breakpoint. */ | |
52b51d06 | 615 | /* Do not inherit to_can_use_hw_breakpoint. */ |
61b371f9 | 616 | /* Do not inherit to_insert_hw_breakpoint. */ |
418dabac | 617 | /* Do not inherit to_remove_hw_breakpoint. */ |
f1310107 | 618 | /* Do not inherit to_ranged_break_num_registers. */ |
016facd4 | 619 | /* Do not inherit to_insert_watchpoint. */ |
61dd109f | 620 | /* Do not inherit to_remove_watchpoint. */ |
9c06b0b4 TJB |
621 | /* Do not inherit to_insert_mask_watchpoint. */ |
622 | /* Do not inherit to_remove_mask_watchpoint. */ | |
6b84065d | 623 | /* Do not inherit to_stopped_data_address. */ |
74174d2e | 624 | INHERIT (to_have_steppable_watchpoint, t); |
7998dfc3 | 625 | INHERIT (to_have_continuable_watchpoint, t); |
6b84065d | 626 | /* Do not inherit to_stopped_by_watchpoint. */ |
65f160a9 | 627 | /* Do not inherit to_watchpoint_addr_within_range. */ |
d03655e4 | 628 | /* Do not inherit to_region_ok_for_hw_watchpoint. */ |
77cdffe9 | 629 | /* Do not inherit to_can_accel_watchpoint_condition. */ |
9c06b0b4 | 630 | /* Do not inherit to_masked_watch_num_registers. */ |
0343661d | 631 | /* Do not inherit to_terminal_init. */ |
ddeaacc9 | 632 | /* Do not inherit to_terminal_inferior. */ |
74fcbef9 | 633 | /* Do not inherit to_terminal_ours_for_output. */ |
e4a733f1 | 634 | /* Do not inherit to_terminal_ours. */ |
c6ea8f79 | 635 | /* Do not inherit to_terminal_save_ours. */ |
e19e919f | 636 | /* Do not inherit to_terminal_info. */ |
7d85a9c0 | 637 | /* Do not inherit to_kill. */ |
7634da87 | 638 | /* Do not inherit to_load. */ |
136d6dae | 639 | /* Do no inherit to_create_inferior. */ |
340ba4bf | 640 | /* Do not inherit to_post_startup_inferior. */ |
5958ebeb | 641 | /* Do not inherit to_insert_fork_catchpoint. */ |
e1a21fb7 | 642 | /* Do not inherit to_remove_fork_catchpoint. */ |
7e18a8dc | 643 | /* Do not inherit to_insert_vfork_catchpoint. */ |
95c3375e | 644 | /* Do not inherit to_remove_vfork_catchpoint. */ |
ee057212 | 645 | /* Do not inherit to_follow_fork. */ |
62f64d7a | 646 | /* Do not inherit to_insert_exec_catchpoint. */ |
cda0f38c | 647 | /* Do not inherit to_remove_exec_catchpoint. */ |
6a9fa051 | 648 | /* Do not inherit to_set_syscall_catchpoint. */ |
0db88c1d | 649 | /* Do not inherit to_has_exited. */ |
82892036 | 650 | /* Do not inherit to_mourn_inferior. */ |
7998dfc3 | 651 | INHERIT (to_can_run, t); |
2455069d | 652 | /* Do not inherit to_pass_signals. */ |
9b224c5e | 653 | /* Do not inherit to_program_signals. */ |
28439f5e PA |
654 | /* Do not inherit to_thread_alive. */ |
655 | /* Do not inherit to_find_new_threads. */ | |
117de6a9 | 656 | /* Do not inherit to_pid_to_str. */ |
4a7e6dda | 657 | /* Do not inherit to_extra_thread_info. */ |
825828fc | 658 | /* Do not inherit to_thread_name. */ |
7998dfc3 | 659 | INHERIT (to_stop, t); |
4b8a223f | 660 | /* Do not inherit to_xfer_partial. */ |
a53f3625 | 661 | /* Do not inherit to_rcmd. */ |
830ca330 | 662 | /* Do not inherit to_pid_to_exec_file. */ |
d9cb0195 | 663 | /* Do not inherit to_log_command. */ |
7998dfc3 | 664 | INHERIT (to_stratum, t); |
c378eb4e MS |
665 | /* Do not inherit to_has_all_memory. */ |
666 | /* Do not inherit to_has_memory. */ | |
667 | /* Do not inherit to_has_stack. */ | |
668 | /* Do not inherit to_has_registers. */ | |
669 | /* Do not inherit to_has_execution. */ | |
7998dfc3 | 670 | INHERIT (to_has_thread_control, t); |
6b84065d TT |
671 | /* Do not inherit to_can_async_p. */ |
672 | /* Do not inherit to_is_async_p. */ | |
673 | /* Do not inherit to_async. */ | |
0b5a2719 | 674 | /* Do not inherit to_find_memory_regions. */ |
16f796b1 | 675 | /* Do not inherit to_make_corefile_notes. */ |
3dbafbbb | 676 | /* Do not inherit to_get_bookmark. */ |
9bb9d61d | 677 | /* Do not inherit to_goto_bookmark. */ |
117de6a9 | 678 | /* Do not inherit to_get_thread_local_address. */ |
53e1cfc7 | 679 | /* Do not inherit to_can_execute_reverse. */ |
fe31bf5b | 680 | /* Do not inherit to_execution_direction. */ |
c2250ad1 | 681 | INHERIT (to_thread_architecture, t); |
424163ea | 682 | /* Do not inherit to_read_description. */ |
0ef643c8 | 683 | INHERIT (to_get_ada_task_ptid, t); |
08388c79 | 684 | /* Do not inherit to_search_memory. */ |
8a305172 | 685 | INHERIT (to_supports_multi_process, t); |
d248b706 | 686 | INHERIT (to_supports_enable_disable_tracepoint, t); |
3065dfb6 | 687 | INHERIT (to_supports_string_tracing, t); |
35b1e5cc SS |
688 | INHERIT (to_trace_init, t); |
689 | INHERIT (to_download_tracepoint, t); | |
1e4d1764 | 690 | INHERIT (to_can_download_tracepoint, t); |
35b1e5cc | 691 | INHERIT (to_download_trace_state_variable, t); |
d248b706 KY |
692 | INHERIT (to_enable_tracepoint, t); |
693 | INHERIT (to_disable_tracepoint, t); | |
35b1e5cc SS |
694 | INHERIT (to_trace_set_readonly_regions, t); |
695 | INHERIT (to_trace_start, t); | |
696 | INHERIT (to_get_trace_status, t); | |
f196051f | 697 | INHERIT (to_get_tracepoint_status, t); |
35b1e5cc SS |
698 | INHERIT (to_trace_stop, t); |
699 | INHERIT (to_trace_find, t); | |
700 | INHERIT (to_get_trace_state_variable_value, t); | |
00bf0b85 SS |
701 | INHERIT (to_save_trace_data, t); |
702 | INHERIT (to_upload_tracepoints, t); | |
703 | INHERIT (to_upload_trace_state_variables, t); | |
704 | INHERIT (to_get_raw_trace_data, t); | |
405f8e94 | 705 | INHERIT (to_get_min_fast_tracepoint_insn_len, t); |
35b1e5cc | 706 | INHERIT (to_set_disconnected_tracing, t); |
4daf5ac0 | 707 | INHERIT (to_set_circular_trace_buffer, t); |
f6f899bf | 708 | INHERIT (to_set_trace_buffer_size, t); |
f196051f | 709 | INHERIT (to_set_trace_notes, t); |
711e434b | 710 | INHERIT (to_get_tib_address, t); |
d914c394 | 711 | INHERIT (to_set_permissions, t); |
0fb4aa4b PA |
712 | INHERIT (to_static_tracepoint_marker_at, t); |
713 | INHERIT (to_static_tracepoint_markers_by_strid, t); | |
b3b9301e | 714 | INHERIT (to_traceframe_info, t); |
d1feda86 YQ |
715 | INHERIT (to_use_agent, t); |
716 | INHERIT (to_can_use_agent, t); | |
ced63ec0 | 717 | INHERIT (to_augmented_libraries_svr4_read, t); |
7998dfc3 | 718 | INHERIT (to_magic, t); |
b775012e | 719 | INHERIT (to_supports_evaluation_of_breakpoint_conditions, t); |
d3ce09f5 | 720 | INHERIT (to_can_run_breakpoint_commands, t); |
fd79ecee | 721 | /* Do not inherit to_memory_map. */ |
a76d924d DJ |
722 | /* Do not inherit to_flash_erase. */ |
723 | /* Do not inherit to_flash_done. */ | |
7998dfc3 AC |
724 | } |
725 | #undef INHERIT | |
726 | ||
727 | /* Clean up a target struct so it no longer has any zero pointers in | |
0088c768 AC |
728 | it. Some entries are defaulted to a method that print an error, |
729 | others are hard-wired to a standard recursive default. */ | |
c906108c SS |
730 | |
731 | #define de_fault(field, value) \ | |
7998dfc3 AC |
732 | if (!current_target.field) \ |
733 | current_target.field = value | |
0d06e24b | 734 | |
2bc416ba DJ |
735 | de_fault (to_open, |
736 | (void (*) (char *, int)) | |
0d06e24b | 737 | tcomplain); |
2bc416ba | 738 | de_fault (to_close, |
de90e03d | 739 | (void (*) (struct target_ops *)) |
0d06e24b | 740 | target_ignore); |
2bc416ba | 741 | de_fault (deprecated_xfer_memory, |
3e43a32a MS |
742 | (int (*) (CORE_ADDR, gdb_byte *, int, int, |
743 | struct mem_attrib *, struct target_ops *)) | |
0d06e24b | 744 | nomemory); |
2bc416ba | 745 | de_fault (to_can_run, |
da82bd6b | 746 | (int (*) (struct target_ops *)) |
0d06e24b | 747 | return_zero); |
2bc416ba | 748 | de_fault (to_stop, |
1eab8a48 | 749 | (void (*) (struct target_ops *, ptid_t)) |
0d06e24b | 750 | target_ignore); |
c2250ad1 UW |
751 | de_fault (to_thread_architecture, |
752 | default_thread_architecture); | |
424163ea | 753 | current_target.to_read_description = NULL; |
0ef643c8 | 754 | de_fault (to_get_ada_task_ptid, |
1e6b91a4 | 755 | (ptid_t (*) (struct target_ops *, long, long)) |
0ef643c8 | 756 | default_get_ada_task_ptid); |
8a305172 | 757 | de_fault (to_supports_multi_process, |
86ce2668 | 758 | (int (*) (struct target_ops *)) |
8a305172 | 759 | return_zero); |
d248b706 | 760 | de_fault (to_supports_enable_disable_tracepoint, |
7d178d6a | 761 | (int (*) (struct target_ops *)) |
d248b706 | 762 | return_zero); |
3065dfb6 | 763 | de_fault (to_supports_string_tracing, |
6de37a3a | 764 | (int (*) (struct target_ops *)) |
3065dfb6 | 765 | return_zero); |
35b1e5cc | 766 | de_fault (to_trace_init, |
ecae04e1 | 767 | (void (*) (struct target_ops *)) |
35b1e5cc SS |
768 | tcomplain); |
769 | de_fault (to_download_tracepoint, | |
548f7808 | 770 | (void (*) (struct target_ops *, struct bp_location *)) |
35b1e5cc | 771 | tcomplain); |
1e4d1764 | 772 | de_fault (to_can_download_tracepoint, |
a52a8357 | 773 | (int (*) (struct target_ops *)) |
1e4d1764 | 774 | return_zero); |
35b1e5cc | 775 | de_fault (to_download_trace_state_variable, |
559d2b81 | 776 | (void (*) (struct target_ops *, struct trace_state_variable *)) |
35b1e5cc | 777 | tcomplain); |
d248b706 | 778 | de_fault (to_enable_tracepoint, |
46670d57 | 779 | (void (*) (struct target_ops *, struct bp_location *)) |
d248b706 KY |
780 | tcomplain); |
781 | de_fault (to_disable_tracepoint, | |
780b049c | 782 | (void (*) (struct target_ops *, struct bp_location *)) |
d248b706 | 783 | tcomplain); |
35b1e5cc | 784 | de_fault (to_trace_set_readonly_regions, |
583f9a86 | 785 | (void (*) (struct target_ops *)) |
35b1e5cc SS |
786 | tcomplain); |
787 | de_fault (to_trace_start, | |
e2d1aae3 | 788 | (void (*) (struct target_ops *)) |
35b1e5cc SS |
789 | tcomplain); |
790 | de_fault (to_get_trace_status, | |
8bd200f1 | 791 | (int (*) (struct target_ops *, struct trace_status *)) |
35b1e5cc | 792 | return_minus_one); |
f196051f | 793 | de_fault (to_get_tracepoint_status, |
db90e85c TT |
794 | (void (*) (struct target_ops *, struct breakpoint *, |
795 | struct uploaded_tp *)) | |
f196051f | 796 | tcomplain); |
35b1e5cc | 797 | de_fault (to_trace_stop, |
74499f1b | 798 | (void (*) (struct target_ops *)) |
35b1e5cc SS |
799 | tcomplain); |
800 | de_fault (to_trace_find, | |
bd4c6793 TT |
801 | (int (*) (struct target_ops *, |
802 | enum trace_find_type, int, CORE_ADDR, CORE_ADDR, int *)) | |
4136fdd2 | 803 | return_minus_one); |
35b1e5cc | 804 | de_fault (to_get_trace_state_variable_value, |
4011015b | 805 | (int (*) (struct target_ops *, int, LONGEST *)) |
35b1e5cc | 806 | return_zero); |
00bf0b85 | 807 | de_fault (to_save_trace_data, |
dc3decaf | 808 | (int (*) (struct target_ops *, const char *)) |
00bf0b85 SS |
809 | tcomplain); |
810 | de_fault (to_upload_tracepoints, | |
ab6617cc | 811 | (int (*) (struct target_ops *, struct uploaded_tp **)) |
00bf0b85 SS |
812 | return_zero); |
813 | de_fault (to_upload_trace_state_variables, | |
181e3713 | 814 | (int (*) (struct target_ops *, struct uploaded_tsv **)) |
00bf0b85 SS |
815 | return_zero); |
816 | de_fault (to_get_raw_trace_data, | |
88ee6f45 | 817 | (LONGEST (*) (struct target_ops *, gdb_byte *, ULONGEST, LONGEST)) |
00bf0b85 | 818 | tcomplain); |
405f8e94 | 819 | de_fault (to_get_min_fast_tracepoint_insn_len, |
0e67620a | 820 | (int (*) (struct target_ops *)) |
405f8e94 | 821 | return_minus_one); |
35b1e5cc | 822 | de_fault (to_set_disconnected_tracing, |
37b25738 | 823 | (void (*) (struct target_ops *, int)) |
4daf5ac0 SS |
824 | target_ignore); |
825 | de_fault (to_set_circular_trace_buffer, | |
736d5b1f | 826 | (void (*) (struct target_ops *, int)) |
4daf5ac0 | 827 | target_ignore); |
f6f899bf | 828 | de_fault (to_set_trace_buffer_size, |
4da384be | 829 | (void (*) (struct target_ops *, LONGEST)) |
f6f899bf | 830 | target_ignore); |
f196051f | 831 | de_fault (to_set_trace_notes, |
d9e68a2c TT |
832 | (int (*) (struct target_ops *, |
833 | const char *, const char *, const char *)) | |
f196051f | 834 | return_zero); |
711e434b | 835 | de_fault (to_get_tib_address, |
bd7ae0f5 | 836 | (int (*) (struct target_ops *, ptid_t, CORE_ADDR *)) |
711e434b | 837 | tcomplain); |
d914c394 | 838 | de_fault (to_set_permissions, |
c378d69d | 839 | (void (*) (struct target_ops *)) |
d914c394 | 840 | target_ignore); |
0fb4aa4b | 841 | de_fault (to_static_tracepoint_marker_at, |
61fc905d TT |
842 | (int (*) (struct target_ops *, |
843 | CORE_ADDR, struct static_tracepoint_marker *)) | |
0fb4aa4b PA |
844 | return_zero); |
845 | de_fault (to_static_tracepoint_markers_by_strid, | |
c686c57f TT |
846 | (VEC(static_tracepoint_marker_p) * (*) (struct target_ops *, |
847 | const char *)) | |
0fb4aa4b | 848 | tcomplain); |
b3b9301e | 849 | de_fault (to_traceframe_info, |
a893e81f | 850 | (struct traceframe_info * (*) (struct target_ops *)) |
1b67eb02 | 851 | return_null); |
b775012e | 852 | de_fault (to_supports_evaluation_of_breakpoint_conditions, |
efcc2da7 | 853 | (int (*) (struct target_ops *)) |
b775012e | 854 | return_zero); |
d3ce09f5 | 855 | de_fault (to_can_run_breakpoint_commands, |
78eff0ec | 856 | (int (*) (struct target_ops *)) |
d3ce09f5 | 857 | return_zero); |
d1feda86 | 858 | de_fault (to_use_agent, |
2c152180 | 859 | (int (*) (struct target_ops *, int)) |
d1feda86 YQ |
860 | tcomplain); |
861 | de_fault (to_can_use_agent, | |
fe38f897 | 862 | (int (*) (struct target_ops *)) |
d1feda86 | 863 | return_zero); |
ced63ec0 | 864 | de_fault (to_augmented_libraries_svr4_read, |
5436ff03 | 865 | (int (*) (struct target_ops *)) |
ced63ec0 | 866 | return_zero); |
32231432 | 867 | |
c906108c | 868 | #undef de_fault |
c906108c | 869 | |
7998dfc3 AC |
870 | /* Finally, position the target-stack beneath the squashed |
871 | "current_target". That way code looking for a non-inherited | |
872 | target method can quickly and simply find it. */ | |
873 | current_target.beneath = target_stack; | |
b4b61fdb DJ |
874 | |
875 | if (targetdebug) | |
876 | setup_target_debug (); | |
c906108c SS |
877 | } |
878 | ||
879 | /* Push a new target type into the stack of the existing target accessors, | |
880 | possibly superseding some of the existing accessors. | |
881 | ||
c906108c SS |
882 | Rather than allow an empty stack, we always have the dummy target at |
883 | the bottom stratum, so we can call the function vectors without | |
884 | checking them. */ | |
885 | ||
b26a4dcb | 886 | void |
fba45db2 | 887 | push_target (struct target_ops *t) |
c906108c | 888 | { |
258b763a | 889 | struct target_ops **cur; |
c906108c SS |
890 | |
891 | /* Check magic number. If wrong, it probably means someone changed | |
892 | the struct definition, but not all the places that initialize one. */ | |
893 | if (t->to_magic != OPS_MAGIC) | |
894 | { | |
c5aa993b JM |
895 | fprintf_unfiltered (gdb_stderr, |
896 | "Magic number of %s target struct wrong\n", | |
897 | t->to_shortname); | |
3e43a32a MS |
898 | internal_error (__FILE__, __LINE__, |
899 | _("failed internal consistency check")); | |
c906108c SS |
900 | } |
901 | ||
258b763a AC |
902 | /* Find the proper stratum to install this target in. */ |
903 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
c906108c | 904 | { |
258b763a | 905 | if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum) |
c906108c SS |
906 | break; |
907 | } | |
908 | ||
258b763a | 909 | /* If there's already targets at this stratum, remove them. */ |
88c231eb | 910 | /* FIXME: cagney/2003-10-15: I think this should be popping all |
258b763a AC |
911 | targets to CUR, and not just those at this stratum level. */ |
912 | while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum) | |
913 | { | |
914 | /* There's already something at this stratum level. Close it, | |
915 | and un-hook it from the stack. */ | |
916 | struct target_ops *tmp = (*cur); | |
5d502164 | 917 | |
258b763a AC |
918 | (*cur) = (*cur)->beneath; |
919 | tmp->beneath = NULL; | |
460014f5 | 920 | target_close (tmp); |
258b763a | 921 | } |
c906108c SS |
922 | |
923 | /* We have removed all targets in our stratum, now add the new one. */ | |
258b763a AC |
924 | t->beneath = (*cur); |
925 | (*cur) = t; | |
c906108c SS |
926 | |
927 | update_current_target (); | |
c906108c SS |
928 | } |
929 | ||
2bc416ba | 930 | /* Remove a target_ops vector from the stack, wherever it may be. |
c906108c SS |
931 | Return how many times it was removed (0 or 1). */ |
932 | ||
933 | int | |
fba45db2 | 934 | unpush_target (struct target_ops *t) |
c906108c | 935 | { |
258b763a AC |
936 | struct target_ops **cur; |
937 | struct target_ops *tmp; | |
c906108c | 938 | |
c8d104ad PA |
939 | if (t->to_stratum == dummy_stratum) |
940 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 941 | _("Attempt to unpush the dummy target")); |
c8d104ad | 942 | |
c906108c | 943 | /* Look for the specified target. Note that we assume that a target |
c378eb4e | 944 | can only occur once in the target stack. */ |
c906108c | 945 | |
258b763a AC |
946 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) |
947 | { | |
948 | if ((*cur) == t) | |
949 | break; | |
950 | } | |
c906108c | 951 | |
305436e0 PA |
952 | /* If we don't find target_ops, quit. Only open targets should be |
953 | closed. */ | |
258b763a | 954 | if ((*cur) == NULL) |
305436e0 | 955 | return 0; |
5269965e | 956 | |
c378eb4e | 957 | /* Unchain the target. */ |
258b763a AC |
958 | tmp = (*cur); |
959 | (*cur) = (*cur)->beneath; | |
960 | tmp->beneath = NULL; | |
c906108c SS |
961 | |
962 | update_current_target (); | |
c906108c | 963 | |
305436e0 PA |
964 | /* Finally close the target. Note we do this after unchaining, so |
965 | any target method calls from within the target_close | |
966 | implementation don't end up in T anymore. */ | |
460014f5 | 967 | target_close (t); |
305436e0 | 968 | |
c906108c SS |
969 | return 1; |
970 | } | |
971 | ||
aa76d38d | 972 | void |
460014f5 | 973 | pop_all_targets_above (enum strata above_stratum) |
aa76d38d | 974 | { |
87ab71f0 | 975 | while ((int) (current_target.to_stratum) > (int) above_stratum) |
aa76d38d | 976 | { |
aa76d38d PA |
977 | if (!unpush_target (target_stack)) |
978 | { | |
979 | fprintf_unfiltered (gdb_stderr, | |
980 | "pop_all_targets couldn't find target %s\n", | |
b52323fa | 981 | target_stack->to_shortname); |
aa76d38d PA |
982 | internal_error (__FILE__, __LINE__, |
983 | _("failed internal consistency check")); | |
984 | break; | |
985 | } | |
986 | } | |
987 | } | |
988 | ||
87ab71f0 | 989 | void |
460014f5 | 990 | pop_all_targets (void) |
87ab71f0 | 991 | { |
460014f5 | 992 | pop_all_targets_above (dummy_stratum); |
87ab71f0 PA |
993 | } |
994 | ||
c0edd9ed JK |
995 | /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */ |
996 | ||
997 | int | |
998 | target_is_pushed (struct target_ops *t) | |
999 | { | |
1000 | struct target_ops **cur; | |
1001 | ||
1002 | /* Check magic number. If wrong, it probably means someone changed | |
1003 | the struct definition, but not all the places that initialize one. */ | |
1004 | if (t->to_magic != OPS_MAGIC) | |
1005 | { | |
1006 | fprintf_unfiltered (gdb_stderr, | |
1007 | "Magic number of %s target struct wrong\n", | |
1008 | t->to_shortname); | |
3e43a32a MS |
1009 | internal_error (__FILE__, __LINE__, |
1010 | _("failed internal consistency check")); | |
c0edd9ed JK |
1011 | } |
1012 | ||
1013 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
1014 | if (*cur == t) | |
1015 | return 1; | |
1016 | ||
1017 | return 0; | |
1018 | } | |
1019 | ||
72f5cf0e | 1020 | /* Using the objfile specified in OBJFILE, find the address for the |
9e35dae4 DJ |
1021 | current thread's thread-local storage with offset OFFSET. */ |
1022 | CORE_ADDR | |
1023 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) | |
1024 | { | |
1025 | volatile CORE_ADDR addr = 0; | |
117de6a9 PA |
1026 | struct target_ops *target; |
1027 | ||
1028 | for (target = current_target.beneath; | |
1029 | target != NULL; | |
1030 | target = target->beneath) | |
1031 | { | |
1032 | if (target->to_get_thread_local_address != NULL) | |
1033 | break; | |
1034 | } | |
9e35dae4 | 1035 | |
117de6a9 | 1036 | if (target != NULL |
f5656ead | 1037 | && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ())) |
9e35dae4 DJ |
1038 | { |
1039 | ptid_t ptid = inferior_ptid; | |
1040 | volatile struct gdb_exception ex; | |
1041 | ||
1042 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
1043 | { | |
1044 | CORE_ADDR lm_addr; | |
1045 | ||
1046 | /* Fetch the load module address for this objfile. */ | |
f5656ead | 1047 | lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch (), |
9e35dae4 DJ |
1048 | objfile); |
1049 | /* If it's 0, throw the appropriate exception. */ | |
1050 | if (lm_addr == 0) | |
1051 | throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR, | |
1052 | _("TLS load module not found")); | |
1053 | ||
3e43a32a MS |
1054 | addr = target->to_get_thread_local_address (target, ptid, |
1055 | lm_addr, offset); | |
9e35dae4 DJ |
1056 | } |
1057 | /* If an error occurred, print TLS related messages here. Otherwise, | |
1058 | throw the error to some higher catcher. */ | |
1059 | if (ex.reason < 0) | |
1060 | { | |
1061 | int objfile_is_library = (objfile->flags & OBJF_SHARED); | |
1062 | ||
1063 | switch (ex.error) | |
1064 | { | |
1065 | case TLS_NO_LIBRARY_SUPPORT_ERROR: | |
3e43a32a MS |
1066 | error (_("Cannot find thread-local variables " |
1067 | "in this thread library.")); | |
9e35dae4 DJ |
1068 | break; |
1069 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: | |
1070 | if (objfile_is_library) | |
1071 | error (_("Cannot find shared library `%s' in dynamic" | |
4262abfb | 1072 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
1073 | else |
1074 | error (_("Cannot find executable file `%s' in dynamic" | |
4262abfb | 1075 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
1076 | break; |
1077 | case TLS_NOT_ALLOCATED_YET_ERROR: | |
1078 | if (objfile_is_library) | |
1079 | error (_("The inferior has not yet allocated storage for" | |
1080 | " thread-local variables in\n" | |
1081 | "the shared library `%s'\n" | |
1082 | "for %s"), | |
4262abfb | 1083 | objfile_name (objfile), target_pid_to_str (ptid)); |
9e35dae4 DJ |
1084 | else |
1085 | error (_("The inferior has not yet allocated storage for" | |
1086 | " thread-local variables in\n" | |
1087 | "the executable `%s'\n" | |
1088 | "for %s"), | |
4262abfb | 1089 | objfile_name (objfile), target_pid_to_str (ptid)); |
9e35dae4 DJ |
1090 | break; |
1091 | case TLS_GENERIC_ERROR: | |
1092 | if (objfile_is_library) | |
1093 | error (_("Cannot find thread-local storage for %s, " | |
1094 | "shared library %s:\n%s"), | |
1095 | target_pid_to_str (ptid), | |
4262abfb | 1096 | objfile_name (objfile), ex.message); |
9e35dae4 DJ |
1097 | else |
1098 | error (_("Cannot find thread-local storage for %s, " | |
1099 | "executable file %s:\n%s"), | |
1100 | target_pid_to_str (ptid), | |
4262abfb | 1101 | objfile_name (objfile), ex.message); |
9e35dae4 DJ |
1102 | break; |
1103 | default: | |
1104 | throw_exception (ex); | |
1105 | break; | |
1106 | } | |
1107 | } | |
1108 | } | |
1109 | /* It wouldn't be wrong here to try a gdbarch method, too; finding | |
1110 | TLS is an ABI-specific thing. But we don't do that yet. */ | |
1111 | else | |
1112 | error (_("Cannot find thread-local variables on this target")); | |
1113 | ||
1114 | return addr; | |
1115 | } | |
1116 | ||
6be7b56e | 1117 | const char * |
9b409511 | 1118 | target_xfer_status_to_string (enum target_xfer_status err) |
6be7b56e PA |
1119 | { |
1120 | #define CASE(X) case X: return #X | |
1121 | switch (err) | |
1122 | { | |
1123 | CASE(TARGET_XFER_E_IO); | |
1124 | CASE(TARGET_XFER_E_UNAVAILABLE); | |
1125 | default: | |
1126 | return "<unknown>"; | |
1127 | } | |
1128 | #undef CASE | |
1129 | }; | |
1130 | ||
1131 | ||
c906108c SS |
1132 | #undef MIN |
1133 | #define MIN(A, B) (((A) <= (B)) ? (A) : (B)) | |
1134 | ||
1135 | /* target_read_string -- read a null terminated string, up to LEN bytes, | |
1136 | from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful. | |
1137 | Set *STRING to a pointer to malloc'd memory containing the data; the caller | |
1138 | is responsible for freeing it. Return the number of bytes successfully | |
1139 | read. */ | |
1140 | ||
1141 | int | |
fba45db2 | 1142 | target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop) |
c906108c | 1143 | { |
c2e8b827 | 1144 | int tlen, offset, i; |
1b0ba102 | 1145 | gdb_byte buf[4]; |
c906108c SS |
1146 | int errcode = 0; |
1147 | char *buffer; | |
1148 | int buffer_allocated; | |
1149 | char *bufptr; | |
1150 | unsigned int nbytes_read = 0; | |
1151 | ||
6217bf3e MS |
1152 | gdb_assert (string); |
1153 | ||
c906108c SS |
1154 | /* Small for testing. */ |
1155 | buffer_allocated = 4; | |
1156 | buffer = xmalloc (buffer_allocated); | |
1157 | bufptr = buffer; | |
1158 | ||
c906108c SS |
1159 | while (len > 0) |
1160 | { | |
1161 | tlen = MIN (len, 4 - (memaddr & 3)); | |
1162 | offset = memaddr & 3; | |
1163 | ||
1b0ba102 | 1164 | errcode = target_read_memory (memaddr & ~3, buf, sizeof buf); |
c906108c SS |
1165 | if (errcode != 0) |
1166 | { | |
1167 | /* The transfer request might have crossed the boundary to an | |
c378eb4e | 1168 | unallocated region of memory. Retry the transfer, requesting |
c906108c SS |
1169 | a single byte. */ |
1170 | tlen = 1; | |
1171 | offset = 0; | |
b8eb5af0 | 1172 | errcode = target_read_memory (memaddr, buf, 1); |
c906108c SS |
1173 | if (errcode != 0) |
1174 | goto done; | |
1175 | } | |
1176 | ||
1177 | if (bufptr - buffer + tlen > buffer_allocated) | |
1178 | { | |
1179 | unsigned int bytes; | |
5d502164 | 1180 | |
c906108c SS |
1181 | bytes = bufptr - buffer; |
1182 | buffer_allocated *= 2; | |
1183 | buffer = xrealloc (buffer, buffer_allocated); | |
1184 | bufptr = buffer + bytes; | |
1185 | } | |
1186 | ||
1187 | for (i = 0; i < tlen; i++) | |
1188 | { | |
1189 | *bufptr++ = buf[i + offset]; | |
1190 | if (buf[i + offset] == '\000') | |
1191 | { | |
1192 | nbytes_read += i + 1; | |
1193 | goto done; | |
1194 | } | |
1195 | } | |
1196 | ||
1197 | memaddr += tlen; | |
1198 | len -= tlen; | |
1199 | nbytes_read += tlen; | |
1200 | } | |
c5aa993b | 1201 | done: |
6217bf3e | 1202 | *string = buffer; |
c906108c SS |
1203 | if (errnop != NULL) |
1204 | *errnop = errcode; | |
c906108c SS |
1205 | return nbytes_read; |
1206 | } | |
1207 | ||
07b82ea5 PA |
1208 | struct target_section_table * |
1209 | target_get_section_table (struct target_ops *target) | |
1210 | { | |
1211 | struct target_ops *t; | |
1212 | ||
1213 | if (targetdebug) | |
1214 | fprintf_unfiltered (gdb_stdlog, "target_get_section_table ()\n"); | |
1215 | ||
1216 | for (t = target; t != NULL; t = t->beneath) | |
1217 | if (t->to_get_section_table != NULL) | |
1218 | return (*t->to_get_section_table) (t); | |
1219 | ||
1220 | return NULL; | |
1221 | } | |
1222 | ||
8db32d44 | 1223 | /* Find a section containing ADDR. */ |
07b82ea5 | 1224 | |
0542c86d | 1225 | struct target_section * |
8db32d44 AC |
1226 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
1227 | { | |
07b82ea5 | 1228 | struct target_section_table *table = target_get_section_table (target); |
0542c86d | 1229 | struct target_section *secp; |
07b82ea5 PA |
1230 | |
1231 | if (table == NULL) | |
1232 | return NULL; | |
1233 | ||
1234 | for (secp = table->sections; secp < table->sections_end; secp++) | |
8db32d44 AC |
1235 | { |
1236 | if (addr >= secp->addr && addr < secp->endaddr) | |
1237 | return secp; | |
1238 | } | |
1239 | return NULL; | |
1240 | } | |
1241 | ||
e6e4e701 PA |
1242 | /* Read memory from the live target, even if currently inspecting a |
1243 | traceframe. The return is the same as that of target_read. */ | |
1244 | ||
9b409511 | 1245 | static enum target_xfer_status |
e6e4e701 | 1246 | target_read_live_memory (enum target_object object, |
9b409511 YQ |
1247 | ULONGEST memaddr, gdb_byte *myaddr, ULONGEST len, |
1248 | ULONGEST *xfered_len) | |
e6e4e701 | 1249 | { |
9b409511 | 1250 | enum target_xfer_status ret; |
e6e4e701 PA |
1251 | struct cleanup *cleanup; |
1252 | ||
1253 | /* Switch momentarily out of tfind mode so to access live memory. | |
1254 | Note that this must not clear global state, such as the frame | |
1255 | cache, which must still remain valid for the previous traceframe. | |
1256 | We may be _building_ the frame cache at this point. */ | |
1257 | cleanup = make_cleanup_restore_traceframe_number (); | |
1258 | set_traceframe_number (-1); | |
1259 | ||
9b409511 YQ |
1260 | ret = target_xfer_partial (current_target.beneath, object, NULL, |
1261 | myaddr, NULL, memaddr, len, xfered_len); | |
e6e4e701 PA |
1262 | |
1263 | do_cleanups (cleanup); | |
1264 | return ret; | |
1265 | } | |
1266 | ||
1267 | /* Using the set of read-only target sections of OPS, read live | |
1268 | read-only memory. Note that the actual reads start from the | |
5657161f PA |
1269 | top-most target again. |
1270 | ||
1271 | For interface/parameters/return description see target.h, | |
1272 | to_xfer_partial. */ | |
e6e4e701 | 1273 | |
9b409511 | 1274 | static enum target_xfer_status |
e6e4e701 PA |
1275 | memory_xfer_live_readonly_partial (struct target_ops *ops, |
1276 | enum target_object object, | |
1277 | gdb_byte *readbuf, ULONGEST memaddr, | |
9b409511 | 1278 | ULONGEST len, ULONGEST *xfered_len) |
e6e4e701 PA |
1279 | { |
1280 | struct target_section *secp; | |
1281 | struct target_section_table *table; | |
1282 | ||
1283 | secp = target_section_by_addr (ops, memaddr); | |
1284 | if (secp != NULL | |
2b2848e2 DE |
1285 | && (bfd_get_section_flags (secp->the_bfd_section->owner, |
1286 | secp->the_bfd_section) | |
e6e4e701 PA |
1287 | & SEC_READONLY)) |
1288 | { | |
1289 | struct target_section *p; | |
1290 | ULONGEST memend = memaddr + len; | |
1291 | ||
1292 | table = target_get_section_table (ops); | |
1293 | ||
1294 | for (p = table->sections; p < table->sections_end; p++) | |
1295 | { | |
1296 | if (memaddr >= p->addr) | |
1297 | { | |
1298 | if (memend <= p->endaddr) | |
1299 | { | |
1300 | /* Entire transfer is within this section. */ | |
1301 | return target_read_live_memory (object, memaddr, | |
9b409511 | 1302 | readbuf, len, xfered_len); |
e6e4e701 PA |
1303 | } |
1304 | else if (memaddr >= p->endaddr) | |
1305 | { | |
1306 | /* This section ends before the transfer starts. */ | |
1307 | continue; | |
1308 | } | |
1309 | else | |
1310 | { | |
1311 | /* This section overlaps the transfer. Just do half. */ | |
1312 | len = p->endaddr - memaddr; | |
1313 | return target_read_live_memory (object, memaddr, | |
9b409511 | 1314 | readbuf, len, xfered_len); |
e6e4e701 PA |
1315 | } |
1316 | } | |
1317 | } | |
1318 | } | |
1319 | ||
9b409511 | 1320 | return TARGET_XFER_EOF; |
e6e4e701 PA |
1321 | } |
1322 | ||
9f713294 YQ |
1323 | /* Read memory from more than one valid target. A core file, for |
1324 | instance, could have some of memory but delegate other bits to | |
1325 | the target below it. So, we must manually try all targets. */ | |
1326 | ||
9b409511 | 1327 | static enum target_xfer_status |
17fde6d0 | 1328 | raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf, |
9b409511 YQ |
1329 | const gdb_byte *writebuf, ULONGEST memaddr, LONGEST len, |
1330 | ULONGEST *xfered_len) | |
9f713294 | 1331 | { |
9b409511 | 1332 | enum target_xfer_status res; |
9f713294 YQ |
1333 | |
1334 | do | |
1335 | { | |
1336 | res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 YQ |
1337 | readbuf, writebuf, memaddr, len, |
1338 | xfered_len); | |
1339 | if (res == TARGET_XFER_OK) | |
9f713294 YQ |
1340 | break; |
1341 | ||
633785ff MM |
1342 | /* Stop if the target reports that the memory is not available. */ |
1343 | if (res == TARGET_XFER_E_UNAVAILABLE) | |
1344 | break; | |
1345 | ||
9f713294 YQ |
1346 | /* We want to continue past core files to executables, but not |
1347 | past a running target's memory. */ | |
1348 | if (ops->to_has_all_memory (ops)) | |
1349 | break; | |
1350 | ||
1351 | ops = ops->beneath; | |
1352 | } | |
1353 | while (ops != NULL); | |
1354 | ||
1355 | return res; | |
1356 | } | |
1357 | ||
7f79c47e DE |
1358 | /* Perform a partial memory transfer. |
1359 | For docs see target.h, to_xfer_partial. */ | |
cf7a04e8 | 1360 | |
9b409511 | 1361 | static enum target_xfer_status |
f0ba3972 | 1362 | memory_xfer_partial_1 (struct target_ops *ops, enum target_object object, |
17fde6d0 | 1363 | gdb_byte *readbuf, const gdb_byte *writebuf, ULONGEST memaddr, |
9b409511 | 1364 | ULONGEST len, ULONGEST *xfered_len) |
0779438d | 1365 | { |
9b409511 | 1366 | enum target_xfer_status res; |
cf7a04e8 DJ |
1367 | int reg_len; |
1368 | struct mem_region *region; | |
4e5d721f | 1369 | struct inferior *inf; |
cf7a04e8 | 1370 | |
07b82ea5 PA |
1371 | /* For accesses to unmapped overlay sections, read directly from |
1372 | files. Must do this first, as MEMADDR may need adjustment. */ | |
1373 | if (readbuf != NULL && overlay_debugging) | |
1374 | { | |
1375 | struct obj_section *section = find_pc_overlay (memaddr); | |
5d502164 | 1376 | |
07b82ea5 PA |
1377 | if (pc_in_unmapped_range (memaddr, section)) |
1378 | { | |
1379 | struct target_section_table *table | |
1380 | = target_get_section_table (ops); | |
1381 | const char *section_name = section->the_bfd_section->name; | |
5d502164 | 1382 | |
07b82ea5 PA |
1383 | memaddr = overlay_mapped_address (memaddr, section); |
1384 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 1385 | memaddr, len, xfered_len, |
07b82ea5 PA |
1386 | table->sections, |
1387 | table->sections_end, | |
1388 | section_name); | |
1389 | } | |
1390 | } | |
1391 | ||
1392 | /* Try the executable files, if "trust-readonly-sections" is set. */ | |
cf7a04e8 DJ |
1393 | if (readbuf != NULL && trust_readonly) |
1394 | { | |
0542c86d | 1395 | struct target_section *secp; |
07b82ea5 | 1396 | struct target_section_table *table; |
cf7a04e8 DJ |
1397 | |
1398 | secp = target_section_by_addr (ops, memaddr); | |
1399 | if (secp != NULL | |
2b2848e2 DE |
1400 | && (bfd_get_section_flags (secp->the_bfd_section->owner, |
1401 | secp->the_bfd_section) | |
cf7a04e8 | 1402 | & SEC_READONLY)) |
07b82ea5 PA |
1403 | { |
1404 | table = target_get_section_table (ops); | |
1405 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 1406 | memaddr, len, xfered_len, |
07b82ea5 PA |
1407 | table->sections, |
1408 | table->sections_end, | |
1409 | NULL); | |
1410 | } | |
98646950 UW |
1411 | } |
1412 | ||
e6e4e701 PA |
1413 | /* If reading unavailable memory in the context of traceframes, and |
1414 | this address falls within a read-only section, fallback to | |
1415 | reading from live memory. */ | |
1416 | if (readbuf != NULL && get_traceframe_number () != -1) | |
1417 | { | |
1418 | VEC(mem_range_s) *available; | |
1419 | ||
1420 | /* If we fail to get the set of available memory, then the | |
1421 | target does not support querying traceframe info, and so we | |
1422 | attempt reading from the traceframe anyway (assuming the | |
1423 | target implements the old QTro packet then). */ | |
1424 | if (traceframe_available_memory (&available, memaddr, len)) | |
1425 | { | |
1426 | struct cleanup *old_chain; | |
1427 | ||
1428 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available); | |
1429 | ||
1430 | if (VEC_empty (mem_range_s, available) | |
1431 | || VEC_index (mem_range_s, available, 0)->start != memaddr) | |
1432 | { | |
1433 | /* Don't read into the traceframe's available | |
1434 | memory. */ | |
1435 | if (!VEC_empty (mem_range_s, available)) | |
1436 | { | |
1437 | LONGEST oldlen = len; | |
1438 | ||
1439 | len = VEC_index (mem_range_s, available, 0)->start - memaddr; | |
1440 | gdb_assert (len <= oldlen); | |
1441 | } | |
1442 | ||
1443 | do_cleanups (old_chain); | |
1444 | ||
1445 | /* This goes through the topmost target again. */ | |
1446 | res = memory_xfer_live_readonly_partial (ops, object, | |
9b409511 YQ |
1447 | readbuf, memaddr, |
1448 | len, xfered_len); | |
1449 | if (res == TARGET_XFER_OK) | |
1450 | return TARGET_XFER_OK; | |
1451 | else | |
1452 | { | |
1453 | /* No use trying further, we know some memory starting | |
1454 | at MEMADDR isn't available. */ | |
1455 | *xfered_len = len; | |
1456 | return TARGET_XFER_E_UNAVAILABLE; | |
1457 | } | |
e6e4e701 PA |
1458 | } |
1459 | ||
1460 | /* Don't try to read more than how much is available, in | |
1461 | case the target implements the deprecated QTro packet to | |
1462 | cater for older GDBs (the target's knowledge of read-only | |
1463 | sections may be outdated by now). */ | |
1464 | len = VEC_index (mem_range_s, available, 0)->length; | |
1465 | ||
1466 | do_cleanups (old_chain); | |
1467 | } | |
1468 | } | |
1469 | ||
cf7a04e8 DJ |
1470 | /* Try GDB's internal data cache. */ |
1471 | region = lookup_mem_region (memaddr); | |
4b5752d0 VP |
1472 | /* region->hi == 0 means there's no upper bound. */ |
1473 | if (memaddr + len < region->hi || region->hi == 0) | |
cf7a04e8 DJ |
1474 | reg_len = len; |
1475 | else | |
1476 | reg_len = region->hi - memaddr; | |
1477 | ||
1478 | switch (region->attrib.mode) | |
1479 | { | |
1480 | case MEM_RO: | |
1481 | if (writebuf != NULL) | |
2ed4b548 | 1482 | return TARGET_XFER_E_IO; |
cf7a04e8 DJ |
1483 | break; |
1484 | ||
1485 | case MEM_WO: | |
1486 | if (readbuf != NULL) | |
2ed4b548 | 1487 | return TARGET_XFER_E_IO; |
cf7a04e8 | 1488 | break; |
a76d924d DJ |
1489 | |
1490 | case MEM_FLASH: | |
1491 | /* We only support writing to flash during "load" for now. */ | |
1492 | if (writebuf != NULL) | |
1493 | error (_("Writing to flash memory forbidden in this context")); | |
1494 | break; | |
4b5752d0 VP |
1495 | |
1496 | case MEM_NONE: | |
2ed4b548 | 1497 | return TARGET_XFER_E_IO; |
cf7a04e8 DJ |
1498 | } |
1499 | ||
6c95b8df PA |
1500 | if (!ptid_equal (inferior_ptid, null_ptid)) |
1501 | inf = find_inferior_pid (ptid_get_pid (inferior_ptid)); | |
1502 | else | |
1503 | inf = NULL; | |
4e5d721f DE |
1504 | |
1505 | if (inf != NULL | |
2f4d8875 PA |
1506 | /* The dcache reads whole cache lines; that doesn't play well |
1507 | with reading from a trace buffer, because reading outside of | |
1508 | the collected memory range fails. */ | |
1509 | && get_traceframe_number () == -1 | |
4e5d721f | 1510 | && (region->attrib.cache |
29453a14 YQ |
1511 | || (stack_cache_enabled_p () && object == TARGET_OBJECT_STACK_MEMORY) |
1512 | || (code_cache_enabled_p () && object == TARGET_OBJECT_CODE_MEMORY))) | |
cf7a04e8 | 1513 | { |
2a2f9fe4 | 1514 | DCACHE *dcache = target_dcache_get_or_init (); |
9b409511 | 1515 | int l; |
2a2f9fe4 | 1516 | |
cf7a04e8 | 1517 | if (readbuf != NULL) |
9b409511 | 1518 | l = dcache_xfer_memory (ops, dcache, memaddr, readbuf, reg_len, 0); |
cf7a04e8 DJ |
1519 | else |
1520 | /* FIXME drow/2006-08-09: If we're going to preserve const | |
1521 | correctness dcache_xfer_memory should take readbuf and | |
1522 | writebuf. */ | |
9b409511 | 1523 | l = dcache_xfer_memory (ops, dcache, memaddr, (void *) writebuf, |
cf7a04e8 | 1524 | reg_len, 1); |
9b409511 YQ |
1525 | if (l <= 0) |
1526 | return TARGET_XFER_E_IO; | |
cf7a04e8 | 1527 | else |
9b409511 YQ |
1528 | { |
1529 | *xfered_len = (ULONGEST) l; | |
1530 | return TARGET_XFER_OK; | |
1531 | } | |
cf7a04e8 DJ |
1532 | } |
1533 | ||
1534 | /* If none of those methods found the memory we wanted, fall back | |
1535 | to a target partial transfer. Normally a single call to | |
1536 | to_xfer_partial is enough; if it doesn't recognize an object | |
1537 | it will call the to_xfer_partial of the next target down. | |
1538 | But for memory this won't do. Memory is the only target | |
9b409511 YQ |
1539 | object which can be read from more than one valid target. |
1540 | A core file, for instance, could have some of memory but | |
1541 | delegate other bits to the target below it. So, we must | |
1542 | manually try all targets. */ | |
1543 | ||
1544 | res = raw_memory_xfer_partial (ops, readbuf, writebuf, memaddr, reg_len, | |
1545 | xfered_len); | |
cf7a04e8 | 1546 | |
41dcd03f DE |
1547 | /* Make sure the cache gets updated no matter what - if we are writing |
1548 | to the stack. Even if this write is not tagged as such, we still need | |
1549 | to update the cache. */ | |
1550 | ||
9b409511 | 1551 | if (res == TARGET_XFER_OK |
41dcd03f DE |
1552 | && inf != NULL |
1553 | && writebuf != NULL | |
f2de9785 | 1554 | && target_dcache_init_p () |
41dcd03f | 1555 | && !region->attrib.cache |
29453a14 YQ |
1556 | && ((stack_cache_enabled_p () && object != TARGET_OBJECT_STACK_MEMORY) |
1557 | || (code_cache_enabled_p () && object != TARGET_OBJECT_CODE_MEMORY))) | |
41dcd03f | 1558 | { |
f2de9785 | 1559 | DCACHE *dcache = target_dcache_get (); |
2a2f9fe4 | 1560 | |
9b409511 | 1561 | dcache_update (dcache, memaddr, (void *) writebuf, reg_len); |
41dcd03f DE |
1562 | } |
1563 | ||
cf7a04e8 DJ |
1564 | /* If we still haven't got anything, return the last error. We |
1565 | give up. */ | |
1566 | return res; | |
0779438d AC |
1567 | } |
1568 | ||
f0ba3972 PA |
1569 | /* Perform a partial memory transfer. For docs see target.h, |
1570 | to_xfer_partial. */ | |
1571 | ||
9b409511 | 1572 | static enum target_xfer_status |
f0ba3972 | 1573 | memory_xfer_partial (struct target_ops *ops, enum target_object object, |
9b409511 YQ |
1574 | gdb_byte *readbuf, const gdb_byte *writebuf, |
1575 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) | |
f0ba3972 | 1576 | { |
9b409511 | 1577 | enum target_xfer_status res; |
f0ba3972 PA |
1578 | |
1579 | /* Zero length requests are ok and require no work. */ | |
1580 | if (len == 0) | |
9b409511 | 1581 | return TARGET_XFER_EOF; |
f0ba3972 PA |
1582 | |
1583 | /* Fill in READBUF with breakpoint shadows, or WRITEBUF with | |
1584 | breakpoint insns, thus hiding out from higher layers whether | |
1585 | there are software breakpoints inserted in the code stream. */ | |
1586 | if (readbuf != NULL) | |
1587 | { | |
9b409511 YQ |
1588 | res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len, |
1589 | xfered_len); | |
f0ba3972 | 1590 | |
9b409511 | 1591 | if (res == TARGET_XFER_OK && !show_memory_breakpoints) |
f0ba3972 PA |
1592 | breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, res); |
1593 | } | |
1594 | else | |
1595 | { | |
1596 | void *buf; | |
1597 | struct cleanup *old_chain; | |
1598 | ||
67c059c2 AB |
1599 | /* A large write request is likely to be partially satisfied |
1600 | by memory_xfer_partial_1. We will continually malloc | |
1601 | and free a copy of the entire write request for breakpoint | |
1602 | shadow handling even though we only end up writing a small | |
1603 | subset of it. Cap writes to 4KB to mitigate this. */ | |
1604 | len = min (4096, len); | |
1605 | ||
f0ba3972 PA |
1606 | buf = xmalloc (len); |
1607 | old_chain = make_cleanup (xfree, buf); | |
1608 | memcpy (buf, writebuf, len); | |
1609 | ||
1610 | breakpoint_xfer_memory (NULL, buf, writebuf, memaddr, len); | |
9b409511 YQ |
1611 | res = memory_xfer_partial_1 (ops, object, NULL, buf, memaddr, len, |
1612 | xfered_len); | |
f0ba3972 PA |
1613 | |
1614 | do_cleanups (old_chain); | |
1615 | } | |
1616 | ||
1617 | return res; | |
1618 | } | |
1619 | ||
8defab1a DJ |
1620 | static void |
1621 | restore_show_memory_breakpoints (void *arg) | |
1622 | { | |
1623 | show_memory_breakpoints = (uintptr_t) arg; | |
1624 | } | |
1625 | ||
1626 | struct cleanup * | |
1627 | make_show_memory_breakpoints_cleanup (int show) | |
1628 | { | |
1629 | int current = show_memory_breakpoints; | |
8defab1a | 1630 | |
5d502164 | 1631 | show_memory_breakpoints = show; |
8defab1a DJ |
1632 | return make_cleanup (restore_show_memory_breakpoints, |
1633 | (void *) (uintptr_t) current); | |
1634 | } | |
1635 | ||
7f79c47e DE |
1636 | /* For docs see target.h, to_xfer_partial. */ |
1637 | ||
9b409511 | 1638 | enum target_xfer_status |
27394598 AC |
1639 | target_xfer_partial (struct target_ops *ops, |
1640 | enum target_object object, const char *annex, | |
4ac248ca | 1641 | gdb_byte *readbuf, const gdb_byte *writebuf, |
9b409511 YQ |
1642 | ULONGEST offset, ULONGEST len, |
1643 | ULONGEST *xfered_len) | |
27394598 | 1644 | { |
9b409511 | 1645 | enum target_xfer_status retval; |
27394598 AC |
1646 | |
1647 | gdb_assert (ops->to_xfer_partial != NULL); | |
cf7a04e8 | 1648 | |
ce6d0892 YQ |
1649 | /* Transfer is done when LEN is zero. */ |
1650 | if (len == 0) | |
9b409511 | 1651 | return TARGET_XFER_EOF; |
ce6d0892 | 1652 | |
d914c394 SS |
1653 | if (writebuf && !may_write_memory) |
1654 | error (_("Writing to memory is not allowed (addr %s, len %s)"), | |
1655 | core_addr_to_string_nz (offset), plongest (len)); | |
1656 | ||
9b409511 YQ |
1657 | *xfered_len = 0; |
1658 | ||
cf7a04e8 DJ |
1659 | /* If this is a memory transfer, let the memory-specific code |
1660 | have a look at it instead. Memory transfers are more | |
1661 | complicated. */ | |
29453a14 YQ |
1662 | if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY |
1663 | || object == TARGET_OBJECT_CODE_MEMORY) | |
4e5d721f | 1664 | retval = memory_xfer_partial (ops, object, readbuf, |
9b409511 | 1665 | writebuf, offset, len, xfered_len); |
9f713294 | 1666 | else if (object == TARGET_OBJECT_RAW_MEMORY) |
cf7a04e8 | 1667 | { |
9f713294 | 1668 | /* Request the normal memory object from other layers. */ |
9b409511 YQ |
1669 | retval = raw_memory_xfer_partial (ops, readbuf, writebuf, offset, len, |
1670 | xfered_len); | |
cf7a04e8 | 1671 | } |
9f713294 YQ |
1672 | else |
1673 | retval = ops->to_xfer_partial (ops, object, annex, readbuf, | |
9b409511 | 1674 | writebuf, offset, len, xfered_len); |
cf7a04e8 | 1675 | |
27394598 AC |
1676 | if (targetdebug) |
1677 | { | |
1678 | const unsigned char *myaddr = NULL; | |
1679 | ||
1680 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a | 1681 | "%s:target_xfer_partial " |
9b409511 | 1682 | "(%d, %s, %s, %s, %s, %s) = %d, %s", |
27394598 AC |
1683 | ops->to_shortname, |
1684 | (int) object, | |
1685 | (annex ? annex : "(null)"), | |
53b71562 JB |
1686 | host_address_to_string (readbuf), |
1687 | host_address_to_string (writebuf), | |
0b1553bc | 1688 | core_addr_to_string_nz (offset), |
9b409511 YQ |
1689 | pulongest (len), retval, |
1690 | pulongest (*xfered_len)); | |
27394598 AC |
1691 | |
1692 | if (readbuf) | |
1693 | myaddr = readbuf; | |
1694 | if (writebuf) | |
1695 | myaddr = writebuf; | |
9b409511 | 1696 | if (retval == TARGET_XFER_OK && myaddr != NULL) |
27394598 AC |
1697 | { |
1698 | int i; | |
2bc416ba | 1699 | |
27394598 | 1700 | fputs_unfiltered (", bytes =", gdb_stdlog); |
9b409511 | 1701 | for (i = 0; i < *xfered_len; i++) |
27394598 | 1702 | { |
53b71562 | 1703 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1704 | { |
1705 | if (targetdebug < 2 && i > 0) | |
1706 | { | |
1707 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
1708 | break; | |
1709 | } | |
1710 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1711 | } | |
2bc416ba | 1712 | |
27394598 AC |
1713 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
1714 | } | |
1715 | } | |
2bc416ba | 1716 | |
27394598 AC |
1717 | fputc_unfiltered ('\n', gdb_stdlog); |
1718 | } | |
9b409511 YQ |
1719 | |
1720 | /* Check implementations of to_xfer_partial update *XFERED_LEN | |
1721 | properly. Do assertion after printing debug messages, so that we | |
1722 | can find more clues on assertion failure from debugging messages. */ | |
1723 | if (retval == TARGET_XFER_OK || retval == TARGET_XFER_E_UNAVAILABLE) | |
1724 | gdb_assert (*xfered_len > 0); | |
1725 | ||
27394598 AC |
1726 | return retval; |
1727 | } | |
1728 | ||
578d3588 PA |
1729 | /* Read LEN bytes of target memory at address MEMADDR, placing the |
1730 | results in GDB's memory at MYADDR. Returns either 0 for success or | |
9b409511 | 1731 | TARGET_XFER_E_IO if any error occurs. |
c906108c SS |
1732 | |
1733 | If an error occurs, no guarantee is made about the contents of the data at | |
1734 | MYADDR. In particular, the caller should not depend upon partial reads | |
1735 | filling the buffer with good data. There is no way for the caller to know | |
1736 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 | 1737 | deal with partial reads should call target_read (which will retry until |
c378eb4e | 1738 | it makes no progress, and then return how much was transferred). */ |
c906108c SS |
1739 | |
1740 | int | |
1b162304 | 1741 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
c906108c | 1742 | { |
c35b1492 PA |
1743 | /* Dispatch to the topmost target, not the flattened current_target. |
1744 | Memory accesses check target->to_has_(all_)memory, and the | |
1745 | flattened target doesn't inherit those. */ | |
1746 | if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1747 | myaddr, memaddr, len) == len) |
1748 | return 0; | |
0779438d | 1749 | else |
578d3588 | 1750 | return TARGET_XFER_E_IO; |
c906108c SS |
1751 | } |
1752 | ||
aee4bf85 PA |
1753 | /* Like target_read_memory, but specify explicitly that this is a read |
1754 | from the target's raw memory. That is, this read bypasses the | |
1755 | dcache, breakpoint shadowing, etc. */ | |
1756 | ||
1757 | int | |
1758 | target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1759 | { | |
1760 | /* See comment in target_read_memory about why the request starts at | |
1761 | current_target.beneath. */ | |
1762 | if (target_read (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, | |
1763 | myaddr, memaddr, len) == len) | |
1764 | return 0; | |
1765 | else | |
1766 | return TARGET_XFER_E_IO; | |
1767 | } | |
1768 | ||
4e5d721f DE |
1769 | /* Like target_read_memory, but specify explicitly that this is a read from |
1770 | the target's stack. This may trigger different cache behavior. */ | |
1771 | ||
1772 | int | |
45aa4659 | 1773 | target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
4e5d721f | 1774 | { |
aee4bf85 PA |
1775 | /* See comment in target_read_memory about why the request starts at |
1776 | current_target.beneath. */ | |
4e5d721f DE |
1777 | if (target_read (current_target.beneath, TARGET_OBJECT_STACK_MEMORY, NULL, |
1778 | myaddr, memaddr, len) == len) | |
1779 | return 0; | |
1780 | else | |
578d3588 | 1781 | return TARGET_XFER_E_IO; |
4e5d721f DE |
1782 | } |
1783 | ||
29453a14 YQ |
1784 | /* Like target_read_memory, but specify explicitly that this is a read from |
1785 | the target's code. This may trigger different cache behavior. */ | |
1786 | ||
1787 | int | |
1788 | target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1789 | { | |
aee4bf85 PA |
1790 | /* See comment in target_read_memory about why the request starts at |
1791 | current_target.beneath. */ | |
29453a14 YQ |
1792 | if (target_read (current_target.beneath, TARGET_OBJECT_CODE_MEMORY, NULL, |
1793 | myaddr, memaddr, len) == len) | |
1794 | return 0; | |
1795 | else | |
1796 | return TARGET_XFER_E_IO; | |
1797 | } | |
1798 | ||
7f79c47e | 1799 | /* Write LEN bytes from MYADDR to target memory at address MEMADDR. |
9b409511 | 1800 | Returns either 0 for success or TARGET_XFER_E_IO if any |
578d3588 PA |
1801 | error occurs. If an error occurs, no guarantee is made about how |
1802 | much data got written. Callers that can deal with partial writes | |
1803 | should call target_write. */ | |
7f79c47e | 1804 | |
c906108c | 1805 | int |
45aa4659 | 1806 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
c906108c | 1807 | { |
aee4bf85 PA |
1808 | /* See comment in target_read_memory about why the request starts at |
1809 | current_target.beneath. */ | |
c35b1492 | 1810 | if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, |
cf7a04e8 DJ |
1811 | myaddr, memaddr, len) == len) |
1812 | return 0; | |
0779438d | 1813 | else |
578d3588 | 1814 | return TARGET_XFER_E_IO; |
c906108c | 1815 | } |
c5aa993b | 1816 | |
f0ba3972 | 1817 | /* Write LEN bytes from MYADDR to target raw memory at address |
9b409511 | 1818 | MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO |
578d3588 PA |
1819 | if any error occurs. If an error occurs, no guarantee is made |
1820 | about how much data got written. Callers that can deal with | |
1821 | partial writes should call target_write. */ | |
f0ba3972 PA |
1822 | |
1823 | int | |
45aa4659 | 1824 | target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
f0ba3972 | 1825 | { |
aee4bf85 PA |
1826 | /* See comment in target_read_memory about why the request starts at |
1827 | current_target.beneath. */ | |
f0ba3972 PA |
1828 | if (target_write (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, |
1829 | myaddr, memaddr, len) == len) | |
1830 | return 0; | |
1831 | else | |
578d3588 | 1832 | return TARGET_XFER_E_IO; |
f0ba3972 PA |
1833 | } |
1834 | ||
fd79ecee DJ |
1835 | /* Fetch the target's memory map. */ |
1836 | ||
1837 | VEC(mem_region_s) * | |
1838 | target_memory_map (void) | |
1839 | { | |
1840 | VEC(mem_region_s) *result; | |
1841 | struct mem_region *last_one, *this_one; | |
1842 | int ix; | |
1843 | struct target_ops *t; | |
1844 | ||
1845 | if (targetdebug) | |
1846 | fprintf_unfiltered (gdb_stdlog, "target_memory_map ()\n"); | |
1847 | ||
1848 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1849 | if (t->to_memory_map != NULL) | |
1850 | break; | |
1851 | ||
1852 | if (t == NULL) | |
1853 | return NULL; | |
1854 | ||
1855 | result = t->to_memory_map (t); | |
1856 | if (result == NULL) | |
1857 | return NULL; | |
1858 | ||
1859 | qsort (VEC_address (mem_region_s, result), | |
1860 | VEC_length (mem_region_s, result), | |
1861 | sizeof (struct mem_region), mem_region_cmp); | |
1862 | ||
1863 | /* Check that regions do not overlap. Simultaneously assign | |
1864 | a numbering for the "mem" commands to use to refer to | |
1865 | each region. */ | |
1866 | last_one = NULL; | |
1867 | for (ix = 0; VEC_iterate (mem_region_s, result, ix, this_one); ix++) | |
1868 | { | |
1869 | this_one->number = ix; | |
1870 | ||
1871 | if (last_one && last_one->hi > this_one->lo) | |
1872 | { | |
1873 | warning (_("Overlapping regions in memory map: ignoring")); | |
1874 | VEC_free (mem_region_s, result); | |
1875 | return NULL; | |
1876 | } | |
1877 | last_one = this_one; | |
1878 | } | |
1879 | ||
1880 | return result; | |
1881 | } | |
1882 | ||
a76d924d DJ |
1883 | void |
1884 | target_flash_erase (ULONGEST address, LONGEST length) | |
1885 | { | |
1886 | struct target_ops *t; | |
1887 | ||
1888 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1889 | if (t->to_flash_erase != NULL) | |
5d502164 MS |
1890 | { |
1891 | if (targetdebug) | |
1892 | fprintf_unfiltered (gdb_stdlog, "target_flash_erase (%s, %s)\n", | |
1893 | hex_string (address), phex (length, 0)); | |
1894 | t->to_flash_erase (t, address, length); | |
1895 | return; | |
1896 | } | |
a76d924d DJ |
1897 | |
1898 | tcomplain (); | |
1899 | } | |
1900 | ||
1901 | void | |
1902 | target_flash_done (void) | |
1903 | { | |
1904 | struct target_ops *t; | |
1905 | ||
1906 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1907 | if (t->to_flash_done != NULL) | |
5d502164 MS |
1908 | { |
1909 | if (targetdebug) | |
1910 | fprintf_unfiltered (gdb_stdlog, "target_flash_done\n"); | |
1911 | t->to_flash_done (t); | |
1912 | return; | |
1913 | } | |
a76d924d DJ |
1914 | |
1915 | tcomplain (); | |
1916 | } | |
1917 | ||
920d2a44 AC |
1918 | static void |
1919 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1920 | struct cmd_list_element *c, const char *value) | |
1921 | { | |
3e43a32a MS |
1922 | fprintf_filtered (file, |
1923 | _("Mode for reading from readonly sections is %s.\n"), | |
920d2a44 AC |
1924 | value); |
1925 | } | |
3a11626d | 1926 | |
1e3ff5ad AC |
1927 | /* More generic transfers. */ |
1928 | ||
9b409511 | 1929 | static enum target_xfer_status |
8aa91c1e | 1930 | default_xfer_partial (struct target_ops *ops, enum target_object object, |
2bc416ba | 1931 | const char *annex, gdb_byte *readbuf, |
9b409511 YQ |
1932 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, |
1933 | ULONGEST *xfered_len) | |
0088c768 AC |
1934 | { |
1935 | if (object == TARGET_OBJECT_MEMORY | |
c8e73a31 AC |
1936 | && ops->deprecated_xfer_memory != NULL) |
1937 | /* If available, fall back to the target's | |
1938 | "deprecated_xfer_memory" method. */ | |
0088c768 | 1939 | { |
4b8a223f | 1940 | int xfered = -1; |
5d502164 | 1941 | |
0088c768 | 1942 | errno = 0; |
4b8a223f AC |
1943 | if (writebuf != NULL) |
1944 | { | |
1945 | void *buffer = xmalloc (len); | |
1946 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |
5d502164 | 1947 | |
4b8a223f | 1948 | memcpy (buffer, writebuf, len); |
c8e73a31 AC |
1949 | xfered = ops->deprecated_xfer_memory (offset, buffer, len, |
1950 | 1/*write*/, NULL, ops); | |
4b8a223f AC |
1951 | do_cleanups (cleanup); |
1952 | } | |
1953 | if (readbuf != NULL) | |
244e85c8 MS |
1954 | xfered = ops->deprecated_xfer_memory (offset, readbuf, len, |
1955 | 0/*read*/, NULL, ops); | |
0088c768 | 1956 | if (xfered > 0) |
9b409511 YQ |
1957 | { |
1958 | *xfered_len = (ULONGEST) xfered; | |
1959 | return TARGET_XFER_E_IO; | |
1960 | } | |
0088c768 | 1961 | else if (xfered == 0 && errno == 0) |
c8e73a31 AC |
1962 | /* "deprecated_xfer_memory" uses 0, cross checked against |
1963 | ERRNO as one indication of an error. */ | |
9b409511 | 1964 | return TARGET_XFER_EOF; |
0088c768 | 1965 | else |
9b409511 | 1966 | return TARGET_XFER_E_IO; |
0088c768 | 1967 | } |
0088c768 | 1968 | else |
6b84065d TT |
1969 | { |
1970 | gdb_assert (ops->beneath != NULL); | |
1971 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, | |
1972 | readbuf, writebuf, offset, len, | |
1973 | xfered_len); | |
1974 | } | |
0088c768 AC |
1975 | } |
1976 | ||
7f79c47e | 1977 | /* Target vector read/write partial wrapper functions. */ |
0088c768 | 1978 | |
9b409511 | 1979 | static enum target_xfer_status |
1e3ff5ad AC |
1980 | target_read_partial (struct target_ops *ops, |
1981 | enum target_object object, | |
1b0ba102 | 1982 | const char *annex, gdb_byte *buf, |
9b409511 YQ |
1983 | ULONGEST offset, ULONGEST len, |
1984 | ULONGEST *xfered_len) | |
1e3ff5ad | 1985 | { |
9b409511 YQ |
1986 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len, |
1987 | xfered_len); | |
1e3ff5ad AC |
1988 | } |
1989 | ||
8a55ffb0 | 1990 | static enum target_xfer_status |
1e3ff5ad AC |
1991 | target_write_partial (struct target_ops *ops, |
1992 | enum target_object object, | |
1b0ba102 | 1993 | const char *annex, const gdb_byte *buf, |
9b409511 | 1994 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len) |
1e3ff5ad | 1995 | { |
9b409511 YQ |
1996 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len, |
1997 | xfered_len); | |
1e3ff5ad AC |
1998 | } |
1999 | ||
2000 | /* Wrappers to perform the full transfer. */ | |
7f79c47e DE |
2001 | |
2002 | /* For docs on target_read see target.h. */ | |
2003 | ||
1e3ff5ad AC |
2004 | LONGEST |
2005 | target_read (struct target_ops *ops, | |
2006 | enum target_object object, | |
1b0ba102 | 2007 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
2008 | ULONGEST offset, LONGEST len) |
2009 | { | |
2010 | LONGEST xfered = 0; | |
5d502164 | 2011 | |
1e3ff5ad AC |
2012 | while (xfered < len) |
2013 | { | |
9b409511 YQ |
2014 | ULONGEST xfered_len; |
2015 | enum target_xfer_status status; | |
2016 | ||
2017 | status = target_read_partial (ops, object, annex, | |
2018 | (gdb_byte *) buf + xfered, | |
2019 | offset + xfered, len - xfered, | |
2020 | &xfered_len); | |
5d502164 | 2021 | |
1e3ff5ad | 2022 | /* Call an observer, notifying them of the xfer progress? */ |
9b409511 | 2023 | if (status == TARGET_XFER_EOF) |
13547ab6 | 2024 | return xfered; |
9b409511 YQ |
2025 | else if (status == TARGET_XFER_OK) |
2026 | { | |
2027 | xfered += xfered_len; | |
2028 | QUIT; | |
2029 | } | |
2030 | else | |
0088c768 | 2031 | return -1; |
9b409511 | 2032 | |
1e3ff5ad AC |
2033 | } |
2034 | return len; | |
2035 | } | |
2036 | ||
f1a507a1 JB |
2037 | /* Assuming that the entire [begin, end) range of memory cannot be |
2038 | read, try to read whatever subrange is possible to read. | |
2039 | ||
2040 | The function returns, in RESULT, either zero or one memory block. | |
2041 | If there's a readable subrange at the beginning, it is completely | |
2042 | read and returned. Any further readable subrange will not be read. | |
2043 | Otherwise, if there's a readable subrange at the end, it will be | |
2044 | completely read and returned. Any readable subranges before it | |
2045 | (obviously, not starting at the beginning), will be ignored. In | |
2046 | other cases -- either no readable subrange, or readable subrange(s) | |
2047 | that is neither at the beginning, or end, nothing is returned. | |
2048 | ||
2049 | The purpose of this function is to handle a read across a boundary | |
2050 | of accessible memory in a case when memory map is not available. | |
2051 | The above restrictions are fine for this case, but will give | |
2052 | incorrect results if the memory is 'patchy'. However, supporting | |
2053 | 'patchy' memory would require trying to read every single byte, | |
2054 | and it seems unacceptable solution. Explicit memory map is | |
2055 | recommended for this case -- and target_read_memory_robust will | |
2056 | take care of reading multiple ranges then. */ | |
8dedea02 VP |
2057 | |
2058 | static void | |
3e43a32a MS |
2059 | read_whatever_is_readable (struct target_ops *ops, |
2060 | ULONGEST begin, ULONGEST end, | |
8dedea02 | 2061 | VEC(memory_read_result_s) **result) |
d5086790 | 2062 | { |
f1a507a1 | 2063 | gdb_byte *buf = xmalloc (end - begin); |
8dedea02 VP |
2064 | ULONGEST current_begin = begin; |
2065 | ULONGEST current_end = end; | |
2066 | int forward; | |
2067 | memory_read_result_s r; | |
9b409511 | 2068 | ULONGEST xfered_len; |
8dedea02 VP |
2069 | |
2070 | /* If we previously failed to read 1 byte, nothing can be done here. */ | |
2071 | if (end - begin <= 1) | |
13b3fd9b MS |
2072 | { |
2073 | xfree (buf); | |
2074 | return; | |
2075 | } | |
8dedea02 VP |
2076 | |
2077 | /* Check that either first or the last byte is readable, and give up | |
c378eb4e | 2078 | if not. This heuristic is meant to permit reading accessible memory |
8dedea02 VP |
2079 | at the boundary of accessible region. */ |
2080 | if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 | 2081 | buf, begin, 1, &xfered_len) == TARGET_XFER_OK) |
8dedea02 VP |
2082 | { |
2083 | forward = 1; | |
2084 | ++current_begin; | |
2085 | } | |
2086 | else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 YQ |
2087 | buf + (end-begin) - 1, end - 1, 1, |
2088 | &xfered_len) == TARGET_XFER_OK) | |
8dedea02 VP |
2089 | { |
2090 | forward = 0; | |
2091 | --current_end; | |
2092 | } | |
2093 | else | |
2094 | { | |
13b3fd9b | 2095 | xfree (buf); |
8dedea02 VP |
2096 | return; |
2097 | } | |
2098 | ||
2099 | /* Loop invariant is that the [current_begin, current_end) was previously | |
2100 | found to be not readable as a whole. | |
2101 | ||
2102 | Note loop condition -- if the range has 1 byte, we can't divide the range | |
2103 | so there's no point trying further. */ | |
2104 | while (current_end - current_begin > 1) | |
2105 | { | |
2106 | ULONGEST first_half_begin, first_half_end; | |
2107 | ULONGEST second_half_begin, second_half_end; | |
2108 | LONGEST xfer; | |
8dedea02 | 2109 | ULONGEST middle = current_begin + (current_end - current_begin)/2; |
f1a507a1 | 2110 | |
8dedea02 VP |
2111 | if (forward) |
2112 | { | |
2113 | first_half_begin = current_begin; | |
2114 | first_half_end = middle; | |
2115 | second_half_begin = middle; | |
2116 | second_half_end = current_end; | |
2117 | } | |
2118 | else | |
2119 | { | |
2120 | first_half_begin = middle; | |
2121 | first_half_end = current_end; | |
2122 | second_half_begin = current_begin; | |
2123 | second_half_end = middle; | |
2124 | } | |
2125 | ||
2126 | xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2127 | buf + (first_half_begin - begin), | |
2128 | first_half_begin, | |
2129 | first_half_end - first_half_begin); | |
2130 | ||
2131 | if (xfer == first_half_end - first_half_begin) | |
2132 | { | |
c378eb4e | 2133 | /* This half reads up fine. So, the error must be in the |
3e43a32a | 2134 | other half. */ |
8dedea02 VP |
2135 | current_begin = second_half_begin; |
2136 | current_end = second_half_end; | |
2137 | } | |
2138 | else | |
2139 | { | |
c378eb4e MS |
2140 | /* This half is not readable. Because we've tried one byte, we |
2141 | know some part of this half if actually redable. Go to the next | |
8dedea02 VP |
2142 | iteration to divide again and try to read. |
2143 | ||
2144 | We don't handle the other half, because this function only tries | |
2145 | to read a single readable subrange. */ | |
2146 | current_begin = first_half_begin; | |
2147 | current_end = first_half_end; | |
2148 | } | |
2149 | } | |
2150 | ||
2151 | if (forward) | |
2152 | { | |
2153 | /* The [begin, current_begin) range has been read. */ | |
2154 | r.begin = begin; | |
2155 | r.end = current_begin; | |
2156 | r.data = buf; | |
2157 | } | |
2158 | else | |
2159 | { | |
2160 | /* The [current_end, end) range has been read. */ | |
2161 | LONGEST rlen = end - current_end; | |
f1a507a1 | 2162 | |
8dedea02 VP |
2163 | r.data = xmalloc (rlen); |
2164 | memcpy (r.data, buf + current_end - begin, rlen); | |
2165 | r.begin = current_end; | |
2166 | r.end = end; | |
2167 | xfree (buf); | |
2168 | } | |
2169 | VEC_safe_push(memory_read_result_s, (*result), &r); | |
2170 | } | |
2171 | ||
2172 | void | |
2173 | free_memory_read_result_vector (void *x) | |
2174 | { | |
2175 | VEC(memory_read_result_s) *v = x; | |
2176 | memory_read_result_s *current; | |
2177 | int ix; | |
2178 | ||
2179 | for (ix = 0; VEC_iterate (memory_read_result_s, v, ix, current); ++ix) | |
2180 | { | |
2181 | xfree (current->data); | |
2182 | } | |
2183 | VEC_free (memory_read_result_s, v); | |
2184 | } | |
2185 | ||
2186 | VEC(memory_read_result_s) * | |
2187 | read_memory_robust (struct target_ops *ops, ULONGEST offset, LONGEST len) | |
2188 | { | |
2189 | VEC(memory_read_result_s) *result = 0; | |
2190 | ||
2191 | LONGEST xfered = 0; | |
d5086790 VP |
2192 | while (xfered < len) |
2193 | { | |
8dedea02 VP |
2194 | struct mem_region *region = lookup_mem_region (offset + xfered); |
2195 | LONGEST rlen; | |
5d502164 | 2196 | |
8dedea02 VP |
2197 | /* If there is no explicit region, a fake one should be created. */ |
2198 | gdb_assert (region); | |
2199 | ||
2200 | if (region->hi == 0) | |
2201 | rlen = len - xfered; | |
2202 | else | |
2203 | rlen = region->hi - offset; | |
2204 | ||
2205 | if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO) | |
d5086790 | 2206 | { |
c378eb4e | 2207 | /* Cannot read this region. Note that we can end up here only |
8dedea02 VP |
2208 | if the region is explicitly marked inaccessible, or |
2209 | 'inaccessible-by-default' is in effect. */ | |
2210 | xfered += rlen; | |
2211 | } | |
2212 | else | |
2213 | { | |
2214 | LONGEST to_read = min (len - xfered, rlen); | |
2215 | gdb_byte *buffer = (gdb_byte *)xmalloc (to_read); | |
2216 | ||
2217 | LONGEST xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2218 | (gdb_byte *) buffer, | |
2219 | offset + xfered, to_read); | |
2220 | /* Call an observer, notifying them of the xfer progress? */ | |
d5086790 | 2221 | if (xfer <= 0) |
d5086790 | 2222 | { |
c378eb4e | 2223 | /* Got an error reading full chunk. See if maybe we can read |
8dedea02 VP |
2224 | some subrange. */ |
2225 | xfree (buffer); | |
3e43a32a MS |
2226 | read_whatever_is_readable (ops, offset + xfered, |
2227 | offset + xfered + to_read, &result); | |
8dedea02 | 2228 | xfered += to_read; |
d5086790 | 2229 | } |
8dedea02 VP |
2230 | else |
2231 | { | |
2232 | struct memory_read_result r; | |
2233 | r.data = buffer; | |
2234 | r.begin = offset + xfered; | |
2235 | r.end = r.begin + xfer; | |
2236 | VEC_safe_push (memory_read_result_s, result, &r); | |
2237 | xfered += xfer; | |
2238 | } | |
2239 | QUIT; | |
d5086790 | 2240 | } |
d5086790 | 2241 | } |
8dedea02 | 2242 | return result; |
d5086790 VP |
2243 | } |
2244 | ||
8dedea02 | 2245 | |
cf7a04e8 DJ |
2246 | /* An alternative to target_write with progress callbacks. */ |
2247 | ||
1e3ff5ad | 2248 | LONGEST |
cf7a04e8 DJ |
2249 | target_write_with_progress (struct target_ops *ops, |
2250 | enum target_object object, | |
2251 | const char *annex, const gdb_byte *buf, | |
2252 | ULONGEST offset, LONGEST len, | |
2253 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad AC |
2254 | { |
2255 | LONGEST xfered = 0; | |
a76d924d DJ |
2256 | |
2257 | /* Give the progress callback a chance to set up. */ | |
2258 | if (progress) | |
2259 | (*progress) (0, baton); | |
2260 | ||
1e3ff5ad AC |
2261 | while (xfered < len) |
2262 | { | |
9b409511 YQ |
2263 | ULONGEST xfered_len; |
2264 | enum target_xfer_status status; | |
2265 | ||
2266 | status = target_write_partial (ops, object, annex, | |
2267 | (gdb_byte *) buf + xfered, | |
2268 | offset + xfered, len - xfered, | |
2269 | &xfered_len); | |
cf7a04e8 | 2270 | |
9b409511 | 2271 | if (status == TARGET_XFER_EOF) |
13547ab6 | 2272 | return xfered; |
9b409511 | 2273 | if (TARGET_XFER_STATUS_ERROR_P (status)) |
0088c768 | 2274 | return -1; |
cf7a04e8 | 2275 | |
9b409511 | 2276 | gdb_assert (status == TARGET_XFER_OK); |
cf7a04e8 | 2277 | if (progress) |
9b409511 | 2278 | (*progress) (xfered_len, baton); |
cf7a04e8 | 2279 | |
9b409511 | 2280 | xfered += xfered_len; |
1e3ff5ad AC |
2281 | QUIT; |
2282 | } | |
2283 | return len; | |
2284 | } | |
2285 | ||
7f79c47e DE |
2286 | /* For docs on target_write see target.h. */ |
2287 | ||
cf7a04e8 DJ |
2288 | LONGEST |
2289 | target_write (struct target_ops *ops, | |
2290 | enum target_object object, | |
2291 | const char *annex, const gdb_byte *buf, | |
2292 | ULONGEST offset, LONGEST len) | |
2293 | { | |
2294 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
2295 | NULL, NULL); | |
2296 | } | |
2297 | ||
159f81f3 DJ |
2298 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
2299 | the size of the transferred data. PADDING additional bytes are | |
2300 | available in *BUF_P. This is a helper function for | |
2301 | target_read_alloc; see the declaration of that function for more | |
2302 | information. */ | |
13547ab6 | 2303 | |
159f81f3 DJ |
2304 | static LONGEST |
2305 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, | |
2306 | const char *annex, gdb_byte **buf_p, int padding) | |
13547ab6 DJ |
2307 | { |
2308 | size_t buf_alloc, buf_pos; | |
2309 | gdb_byte *buf; | |
13547ab6 DJ |
2310 | |
2311 | /* This function does not have a length parameter; it reads the | |
2312 | entire OBJECT). Also, it doesn't support objects fetched partly | |
2313 | from one target and partly from another (in a different stratum, | |
2314 | e.g. a core file and an executable). Both reasons make it | |
2315 | unsuitable for reading memory. */ | |
2316 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
2317 | ||
2318 | /* Start by reading up to 4K at a time. The target will throttle | |
2319 | this number down if necessary. */ | |
2320 | buf_alloc = 4096; | |
2321 | buf = xmalloc (buf_alloc); | |
2322 | buf_pos = 0; | |
2323 | while (1) | |
2324 | { | |
9b409511 YQ |
2325 | ULONGEST xfered_len; |
2326 | enum target_xfer_status status; | |
2327 | ||
2328 | status = target_read_partial (ops, object, annex, &buf[buf_pos], | |
2329 | buf_pos, buf_alloc - buf_pos - padding, | |
2330 | &xfered_len); | |
2331 | ||
2332 | if (status == TARGET_XFER_EOF) | |
13547ab6 DJ |
2333 | { |
2334 | /* Read all there was. */ | |
2335 | if (buf_pos == 0) | |
2336 | xfree (buf); | |
2337 | else | |
2338 | *buf_p = buf; | |
2339 | return buf_pos; | |
2340 | } | |
9b409511 YQ |
2341 | else if (status != TARGET_XFER_OK) |
2342 | { | |
2343 | /* An error occurred. */ | |
2344 | xfree (buf); | |
2345 | return TARGET_XFER_E_IO; | |
2346 | } | |
13547ab6 | 2347 | |
9b409511 | 2348 | buf_pos += xfered_len; |
13547ab6 DJ |
2349 | |
2350 | /* If the buffer is filling up, expand it. */ | |
2351 | if (buf_alloc < buf_pos * 2) | |
2352 | { | |
2353 | buf_alloc *= 2; | |
2354 | buf = xrealloc (buf, buf_alloc); | |
2355 | } | |
2356 | ||
2357 | QUIT; | |
2358 | } | |
2359 | } | |
2360 | ||
159f81f3 DJ |
2361 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
2362 | the size of the transferred data. See the declaration in "target.h" | |
2363 | function for more information about the return value. */ | |
2364 | ||
2365 | LONGEST | |
2366 | target_read_alloc (struct target_ops *ops, enum target_object object, | |
2367 | const char *annex, gdb_byte **buf_p) | |
2368 | { | |
2369 | return target_read_alloc_1 (ops, object, annex, buf_p, 0); | |
2370 | } | |
2371 | ||
2372 | /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and | |
2373 | returned as a string, allocated using xmalloc. If an error occurs | |
2374 | or the transfer is unsupported, NULL is returned. Empty objects | |
2375 | are returned as allocated but empty strings. A warning is issued | |
2376 | if the result contains any embedded NUL bytes. */ | |
2377 | ||
2378 | char * | |
2379 | target_read_stralloc (struct target_ops *ops, enum target_object object, | |
2380 | const char *annex) | |
2381 | { | |
39086a0e PA |
2382 | gdb_byte *buffer; |
2383 | char *bufstr; | |
7313baad | 2384 | LONGEST i, transferred; |
159f81f3 | 2385 | |
39086a0e PA |
2386 | transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1); |
2387 | bufstr = (char *) buffer; | |
159f81f3 DJ |
2388 | |
2389 | if (transferred < 0) | |
2390 | return NULL; | |
2391 | ||
2392 | if (transferred == 0) | |
2393 | return xstrdup (""); | |
2394 | ||
39086a0e | 2395 | bufstr[transferred] = 0; |
7313baad UW |
2396 | |
2397 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
39086a0e PA |
2398 | for (i = strlen (bufstr); i < transferred; i++) |
2399 | if (bufstr[i] != 0) | |
7313baad UW |
2400 | { |
2401 | warning (_("target object %d, annex %s, " | |
2402 | "contained unexpected null characters"), | |
2403 | (int) object, annex ? annex : "(none)"); | |
2404 | break; | |
2405 | } | |
159f81f3 | 2406 | |
39086a0e | 2407 | return bufstr; |
159f81f3 DJ |
2408 | } |
2409 | ||
b6591e8b AC |
2410 | /* Memory transfer methods. */ |
2411 | ||
2412 | void | |
1b0ba102 | 2413 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
2414 | LONGEST len) |
2415 | { | |
07b82ea5 PA |
2416 | /* This method is used to read from an alternate, non-current |
2417 | target. This read must bypass the overlay support (as symbols | |
2418 | don't match this target), and GDB's internal cache (wrong cache | |
2419 | for this target). */ | |
2420 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) | |
b6591e8b | 2421 | != len) |
578d3588 | 2422 | memory_error (TARGET_XFER_E_IO, addr); |
b6591e8b AC |
2423 | } |
2424 | ||
2425 | ULONGEST | |
5d502164 MS |
2426 | get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr, |
2427 | int len, enum bfd_endian byte_order) | |
b6591e8b | 2428 | { |
f6519ebc | 2429 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
2430 | |
2431 | gdb_assert (len <= sizeof (buf)); | |
2432 | get_target_memory (ops, addr, buf, len); | |
e17a4113 | 2433 | return extract_unsigned_integer (buf, len, byte_order); |
b6591e8b AC |
2434 | } |
2435 | ||
3db08215 MM |
2436 | /* See target.h. */ |
2437 | ||
d914c394 SS |
2438 | int |
2439 | target_insert_breakpoint (struct gdbarch *gdbarch, | |
2440 | struct bp_target_info *bp_tgt) | |
2441 | { | |
2442 | if (!may_insert_breakpoints) | |
2443 | { | |
2444 | warning (_("May not insert breakpoints")); | |
2445 | return 1; | |
2446 | } | |
2447 | ||
6b84065d TT |
2448 | return current_target.to_insert_breakpoint (¤t_target, |
2449 | gdbarch, bp_tgt); | |
d914c394 SS |
2450 | } |
2451 | ||
3db08215 MM |
2452 | /* See target.h. */ |
2453 | ||
d914c394 | 2454 | int |
6b84065d TT |
2455 | target_remove_breakpoint (struct gdbarch *gdbarch, |
2456 | struct bp_target_info *bp_tgt) | |
d914c394 SS |
2457 | { |
2458 | /* This is kind of a weird case to handle, but the permission might | |
2459 | have been changed after breakpoints were inserted - in which case | |
2460 | we should just take the user literally and assume that any | |
2461 | breakpoints should be left in place. */ | |
2462 | if (!may_insert_breakpoints) | |
2463 | { | |
2464 | warning (_("May not remove breakpoints")); | |
2465 | return 1; | |
2466 | } | |
2467 | ||
6b84065d TT |
2468 | return current_target.to_remove_breakpoint (¤t_target, |
2469 | gdbarch, bp_tgt); | |
d914c394 SS |
2470 | } |
2471 | ||
c906108c | 2472 | static void |
fba45db2 | 2473 | target_info (char *args, int from_tty) |
c906108c SS |
2474 | { |
2475 | struct target_ops *t; | |
c906108c | 2476 | int has_all_mem = 0; |
c5aa993b | 2477 | |
c906108c | 2478 | if (symfile_objfile != NULL) |
4262abfb JK |
2479 | printf_unfiltered (_("Symbols from \"%s\".\n"), |
2480 | objfile_name (symfile_objfile)); | |
c906108c | 2481 | |
258b763a | 2482 | for (t = target_stack; t != NULL; t = t->beneath) |
c906108c | 2483 | { |
c35b1492 | 2484 | if (!(*t->to_has_memory) (t)) |
c906108c SS |
2485 | continue; |
2486 | ||
c5aa993b | 2487 | if ((int) (t->to_stratum) <= (int) dummy_stratum) |
c906108c SS |
2488 | continue; |
2489 | if (has_all_mem) | |
3e43a32a MS |
2490 | printf_unfiltered (_("\tWhile running this, " |
2491 | "GDB does not access memory from...\n")); | |
c5aa993b JM |
2492 | printf_unfiltered ("%s:\n", t->to_longname); |
2493 | (t->to_files_info) (t); | |
c35b1492 | 2494 | has_all_mem = (*t->to_has_all_memory) (t); |
c906108c SS |
2495 | } |
2496 | } | |
2497 | ||
fd79ecee DJ |
2498 | /* This function is called before any new inferior is created, e.g. |
2499 | by running a program, attaching, or connecting to a target. | |
2500 | It cleans up any state from previous invocations which might | |
2501 | change between runs. This is a subset of what target_preopen | |
2502 | resets (things which might change between targets). */ | |
2503 | ||
2504 | void | |
2505 | target_pre_inferior (int from_tty) | |
2506 | { | |
c378eb4e | 2507 | /* Clear out solib state. Otherwise the solib state of the previous |
b9db4ced | 2508 | inferior might have survived and is entirely wrong for the new |
c378eb4e | 2509 | target. This has been observed on GNU/Linux using glibc 2.3. How |
b9db4ced UW |
2510 | to reproduce: |
2511 | ||
2512 | bash$ ./foo& | |
2513 | [1] 4711 | |
2514 | bash$ ./foo& | |
2515 | [1] 4712 | |
2516 | bash$ gdb ./foo | |
2517 | [...] | |
2518 | (gdb) attach 4711 | |
2519 | (gdb) detach | |
2520 | (gdb) attach 4712 | |
2521 | Cannot access memory at address 0xdeadbeef | |
2522 | */ | |
b9db4ced | 2523 | |
50c71eaf PA |
2524 | /* In some OSs, the shared library list is the same/global/shared |
2525 | across inferiors. If code is shared between processes, so are | |
2526 | memory regions and features. */ | |
f5656ead | 2527 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
50c71eaf PA |
2528 | { |
2529 | no_shared_libraries (NULL, from_tty); | |
2530 | ||
2531 | invalidate_target_mem_regions (); | |
424163ea | 2532 | |
50c71eaf PA |
2533 | target_clear_description (); |
2534 | } | |
8ffcbaaf YQ |
2535 | |
2536 | agent_capability_invalidate (); | |
fd79ecee DJ |
2537 | } |
2538 | ||
b8fa0bfa PA |
2539 | /* Callback for iterate_over_inferiors. Gets rid of the given |
2540 | inferior. */ | |
2541 | ||
2542 | static int | |
2543 | dispose_inferior (struct inferior *inf, void *args) | |
2544 | { | |
2545 | struct thread_info *thread; | |
2546 | ||
2547 | thread = any_thread_of_process (inf->pid); | |
2548 | if (thread) | |
2549 | { | |
2550 | switch_to_thread (thread->ptid); | |
2551 | ||
2552 | /* Core inferiors actually should be detached, not killed. */ | |
2553 | if (target_has_execution) | |
2554 | target_kill (); | |
2555 | else | |
2556 | target_detach (NULL, 0); | |
2557 | } | |
2558 | ||
2559 | return 0; | |
2560 | } | |
2561 | ||
c906108c SS |
2562 | /* This is to be called by the open routine before it does |
2563 | anything. */ | |
2564 | ||
2565 | void | |
fba45db2 | 2566 | target_preopen (int from_tty) |
c906108c | 2567 | { |
c5aa993b | 2568 | dont_repeat (); |
c906108c | 2569 | |
b8fa0bfa | 2570 | if (have_inferiors ()) |
c5aa993b | 2571 | { |
adf40b2e | 2572 | if (!from_tty |
b8fa0bfa PA |
2573 | || !have_live_inferiors () |
2574 | || query (_("A program is being debugged already. Kill it? "))) | |
2575 | iterate_over_inferiors (dispose_inferior, NULL); | |
c906108c | 2576 | else |
8a3fe4f8 | 2577 | error (_("Program not killed.")); |
c906108c SS |
2578 | } |
2579 | ||
2580 | /* Calling target_kill may remove the target from the stack. But if | |
2581 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
2582 | /* Leave the exec target, though. The user may be switching from a |
2583 | live process to a core of the same program. */ | |
460014f5 | 2584 | pop_all_targets_above (file_stratum); |
fd79ecee DJ |
2585 | |
2586 | target_pre_inferior (from_tty); | |
c906108c SS |
2587 | } |
2588 | ||
2589 | /* Detach a target after doing deferred register stores. */ | |
2590 | ||
2591 | void | |
52554a0e | 2592 | target_detach (const char *args, int from_tty) |
c906108c | 2593 | { |
136d6dae VP |
2594 | struct target_ops* t; |
2595 | ||
f5656ead | 2596 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
2597 | /* Don't remove global breakpoints here. They're removed on |
2598 | disconnection from the target. */ | |
2599 | ; | |
2600 | else | |
2601 | /* If we're in breakpoints-always-inserted mode, have to remove | |
2602 | them before detaching. */ | |
dfd4cc63 | 2603 | remove_breakpoints_pid (ptid_get_pid (inferior_ptid)); |
74960c60 | 2604 | |
24291992 PA |
2605 | prepare_for_detach (); |
2606 | ||
09da0d0a TT |
2607 | current_target.to_detach (¤t_target, args, from_tty); |
2608 | if (targetdebug) | |
2609 | fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n", | |
2610 | args, from_tty); | |
c906108c SS |
2611 | } |
2612 | ||
6ad8ae5c DJ |
2613 | void |
2614 | target_disconnect (char *args, int from_tty) | |
2615 | { | |
597320e7 DJ |
2616 | struct target_ops *t; |
2617 | ||
50c71eaf PA |
2618 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
2619 | are global across processes, we have to remove them before | |
2620 | disconnecting. */ | |
74960c60 VP |
2621 | remove_breakpoints (); |
2622 | ||
597320e7 DJ |
2623 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2624 | if (t->to_disconnect != NULL) | |
2625 | { | |
2626 | if (targetdebug) | |
2627 | fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n", | |
2628 | args, from_tty); | |
2629 | t->to_disconnect (t, args, from_tty); | |
2630 | return; | |
2631 | } | |
2632 | ||
2633 | tcomplain (); | |
6ad8ae5c DJ |
2634 | } |
2635 | ||
117de6a9 | 2636 | ptid_t |
47608cb1 | 2637 | target_wait (ptid_t ptid, struct target_waitstatus *status, int options) |
117de6a9 PA |
2638 | { |
2639 | struct target_ops *t; | |
6b84065d TT |
2640 | ptid_t retval = (current_target.to_wait) (¤t_target, ptid, |
2641 | status, options); | |
117de6a9 | 2642 | |
6b84065d | 2643 | if (targetdebug) |
117de6a9 | 2644 | { |
6b84065d TT |
2645 | char *status_string; |
2646 | char *options_string; | |
117de6a9 | 2647 | |
6b84065d TT |
2648 | status_string = target_waitstatus_to_string (status); |
2649 | options_string = target_options_to_string (options); | |
2650 | fprintf_unfiltered (gdb_stdlog, | |
2651 | "target_wait (%d, status, options={%s})" | |
2652 | " = %d, %s\n", | |
2653 | ptid_get_pid (ptid), options_string, | |
2654 | ptid_get_pid (retval), status_string); | |
2655 | xfree (status_string); | |
2656 | xfree (options_string); | |
117de6a9 PA |
2657 | } |
2658 | ||
6b84065d | 2659 | return retval; |
117de6a9 PA |
2660 | } |
2661 | ||
2662 | char * | |
2663 | target_pid_to_str (ptid_t ptid) | |
2664 | { | |
2665 | struct target_ops *t; | |
2666 | ||
2667 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2668 | { | |
2669 | if (t->to_pid_to_str != NULL) | |
2670 | return (*t->to_pid_to_str) (t, ptid); | |
2671 | } | |
2672 | ||
2673 | return normal_pid_to_str (ptid); | |
2674 | } | |
2675 | ||
4694da01 TT |
2676 | char * |
2677 | target_thread_name (struct thread_info *info) | |
2678 | { | |
825828fc | 2679 | return current_target.to_thread_name (¤t_target, info); |
4694da01 TT |
2680 | } |
2681 | ||
e1ac3328 | 2682 | void |
2ea28649 | 2683 | target_resume (ptid_t ptid, int step, enum gdb_signal signal) |
e1ac3328 | 2684 | { |
28439f5e PA |
2685 | struct target_ops *t; |
2686 | ||
4e5d721f | 2687 | target_dcache_invalidate (); |
28439f5e | 2688 | |
6b84065d TT |
2689 | current_target.to_resume (¤t_target, ptid, step, signal); |
2690 | if (targetdebug) | |
2691 | fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n", | |
2692 | ptid_get_pid (ptid), | |
2693 | step ? "step" : "continue", | |
2694 | gdb_signal_to_name (signal)); | |
28439f5e | 2695 | |
6b84065d TT |
2696 | registers_changed_ptid (ptid); |
2697 | set_executing (ptid, 1); | |
2698 | set_running (ptid, 1); | |
2699 | clear_inline_frame_state (ptid); | |
e1ac3328 | 2700 | } |
2455069d UW |
2701 | |
2702 | void | |
2703 | target_pass_signals (int numsigs, unsigned char *pass_signals) | |
2704 | { | |
2705 | struct target_ops *t; | |
2706 | ||
2707 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2708 | { | |
2709 | if (t->to_pass_signals != NULL) | |
2710 | { | |
2711 | if (targetdebug) | |
2712 | { | |
2713 | int i; | |
2714 | ||
2715 | fprintf_unfiltered (gdb_stdlog, "target_pass_signals (%d, {", | |
2716 | numsigs); | |
2717 | ||
2718 | for (i = 0; i < numsigs; i++) | |
2719 | if (pass_signals[i]) | |
2720 | fprintf_unfiltered (gdb_stdlog, " %s", | |
2ea28649 | 2721 | gdb_signal_to_name (i)); |
2455069d UW |
2722 | |
2723 | fprintf_unfiltered (gdb_stdlog, " })\n"); | |
2724 | } | |
2725 | ||
94bedb42 | 2726 | (*t->to_pass_signals) (t, numsigs, pass_signals); |
2455069d UW |
2727 | return; |
2728 | } | |
2729 | } | |
2730 | } | |
2731 | ||
9b224c5e PA |
2732 | void |
2733 | target_program_signals (int numsigs, unsigned char *program_signals) | |
2734 | { | |
2735 | struct target_ops *t; | |
2736 | ||
2737 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2738 | { | |
2739 | if (t->to_program_signals != NULL) | |
2740 | { | |
2741 | if (targetdebug) | |
2742 | { | |
2743 | int i; | |
2744 | ||
2745 | fprintf_unfiltered (gdb_stdlog, "target_program_signals (%d, {", | |
2746 | numsigs); | |
2747 | ||
2748 | for (i = 0; i < numsigs; i++) | |
2749 | if (program_signals[i]) | |
2750 | fprintf_unfiltered (gdb_stdlog, " %s", | |
2ea28649 | 2751 | gdb_signal_to_name (i)); |
9b224c5e PA |
2752 | |
2753 | fprintf_unfiltered (gdb_stdlog, " })\n"); | |
2754 | } | |
2755 | ||
daf5e9b6 | 2756 | (*t->to_program_signals) (t, numsigs, program_signals); |
9b224c5e PA |
2757 | return; |
2758 | } | |
2759 | } | |
2760 | } | |
2761 | ||
ee057212 DJ |
2762 | /* Look through the list of possible targets for a target that can |
2763 | follow forks. */ | |
2764 | ||
2765 | int | |
07107ca6 | 2766 | target_follow_fork (int follow_child, int detach_fork) |
ee057212 DJ |
2767 | { |
2768 | struct target_ops *t; | |
2769 | ||
2770 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2771 | { | |
2772 | if (t->to_follow_fork != NULL) | |
2773 | { | |
07107ca6 | 2774 | int retval = t->to_follow_fork (t, follow_child, detach_fork); |
5d502164 | 2775 | |
ee057212 | 2776 | if (targetdebug) |
07107ca6 LM |
2777 | fprintf_unfiltered (gdb_stdlog, |
2778 | "target_follow_fork (%d, %d) = %d\n", | |
2779 | follow_child, detach_fork, retval); | |
ee057212 DJ |
2780 | return retval; |
2781 | } | |
2782 | } | |
2783 | ||
2784 | /* Some target returned a fork event, but did not know how to follow it. */ | |
2785 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 2786 | _("could not find a target to follow fork")); |
ee057212 DJ |
2787 | } |
2788 | ||
136d6dae VP |
2789 | void |
2790 | target_mourn_inferior (void) | |
2791 | { | |
2792 | struct target_ops *t; | |
5d502164 | 2793 | |
136d6dae VP |
2794 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2795 | { | |
2796 | if (t->to_mourn_inferior != NULL) | |
2797 | { | |
2798 | t->to_mourn_inferior (t); | |
947b8855 PA |
2799 | if (targetdebug) |
2800 | fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n"); | |
efbd6e75 JB |
2801 | |
2802 | /* We no longer need to keep handles on any of the object files. | |
2803 | Make sure to release them to avoid unnecessarily locking any | |
2804 | of them while we're not actually debugging. */ | |
2805 | bfd_cache_close_all (); | |
2806 | ||
136d6dae VP |
2807 | return; |
2808 | } | |
2809 | } | |
2810 | ||
2811 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 2812 | _("could not find a target to follow mourn inferior")); |
136d6dae VP |
2813 | } |
2814 | ||
424163ea DJ |
2815 | /* Look for a target which can describe architectural features, starting |
2816 | from TARGET. If we find one, return its description. */ | |
2817 | ||
2818 | const struct target_desc * | |
2819 | target_read_description (struct target_ops *target) | |
2820 | { | |
2821 | struct target_ops *t; | |
2822 | ||
2823 | for (t = target; t != NULL; t = t->beneath) | |
2824 | if (t->to_read_description != NULL) | |
2825 | { | |
2826 | const struct target_desc *tdesc; | |
2827 | ||
2828 | tdesc = t->to_read_description (t); | |
2829 | if (tdesc) | |
2830 | return tdesc; | |
2831 | } | |
2832 | ||
2833 | return NULL; | |
2834 | } | |
2835 | ||
08388c79 DE |
2836 | /* The default implementation of to_search_memory. |
2837 | This implements a basic search of memory, reading target memory and | |
2838 | performing the search here (as opposed to performing the search in on the | |
2839 | target side with, for example, gdbserver). */ | |
2840 | ||
2841 | int | |
2842 | simple_search_memory (struct target_ops *ops, | |
2843 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2844 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2845 | CORE_ADDR *found_addrp) | |
2846 | { | |
2847 | /* NOTE: also defined in find.c testcase. */ | |
2848 | #define SEARCH_CHUNK_SIZE 16000 | |
2849 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
2850 | /* Buffer to hold memory contents for searching. */ | |
2851 | gdb_byte *search_buf; | |
2852 | unsigned search_buf_size; | |
2853 | struct cleanup *old_cleanups; | |
2854 | ||
2855 | search_buf_size = chunk_size + pattern_len - 1; | |
2856 | ||
2857 | /* No point in trying to allocate a buffer larger than the search space. */ | |
2858 | if (search_space_len < search_buf_size) | |
2859 | search_buf_size = search_space_len; | |
2860 | ||
2861 | search_buf = malloc (search_buf_size); | |
2862 | if (search_buf == NULL) | |
5e1471f5 | 2863 | error (_("Unable to allocate memory to perform the search.")); |
08388c79 DE |
2864 | old_cleanups = make_cleanup (free_current_contents, &search_buf); |
2865 | ||
2866 | /* Prime the search buffer. */ | |
2867 | ||
2868 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2869 | search_buf, start_addr, search_buf_size) != search_buf_size) | |
2870 | { | |
b3dc46ff AB |
2871 | warning (_("Unable to access %s bytes of target " |
2872 | "memory at %s, halting search."), | |
2873 | pulongest (search_buf_size), hex_string (start_addr)); | |
08388c79 DE |
2874 | do_cleanups (old_cleanups); |
2875 | return -1; | |
2876 | } | |
2877 | ||
2878 | /* Perform the search. | |
2879 | ||
2880 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
2881 | When we've scanned N bytes we copy the trailing bytes to the start and | |
2882 | read in another N bytes. */ | |
2883 | ||
2884 | while (search_space_len >= pattern_len) | |
2885 | { | |
2886 | gdb_byte *found_ptr; | |
2887 | unsigned nr_search_bytes = min (search_space_len, search_buf_size); | |
2888 | ||
2889 | found_ptr = memmem (search_buf, nr_search_bytes, | |
2890 | pattern, pattern_len); | |
2891 | ||
2892 | if (found_ptr != NULL) | |
2893 | { | |
2894 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
5d502164 | 2895 | |
08388c79 DE |
2896 | *found_addrp = found_addr; |
2897 | do_cleanups (old_cleanups); | |
2898 | return 1; | |
2899 | } | |
2900 | ||
2901 | /* Not found in this chunk, skip to next chunk. */ | |
2902 | ||
2903 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
2904 | if (search_space_len >= chunk_size) | |
2905 | search_space_len -= chunk_size; | |
2906 | else | |
2907 | search_space_len = 0; | |
2908 | ||
2909 | if (search_space_len >= pattern_len) | |
2910 | { | |
2911 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 2912 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
2913 | int nr_to_read; |
2914 | ||
2915 | /* Copy the trailing part of the previous iteration to the front | |
2916 | of the buffer for the next iteration. */ | |
2917 | gdb_assert (keep_len == pattern_len - 1); | |
2918 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
2919 | ||
2920 | nr_to_read = min (search_space_len - keep_len, chunk_size); | |
2921 | ||
2922 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2923 | search_buf + keep_len, read_addr, | |
2924 | nr_to_read) != nr_to_read) | |
2925 | { | |
b3dc46ff | 2926 | warning (_("Unable to access %s bytes of target " |
9b20d036 | 2927 | "memory at %s, halting search."), |
b3dc46ff | 2928 | plongest (nr_to_read), |
08388c79 DE |
2929 | hex_string (read_addr)); |
2930 | do_cleanups (old_cleanups); | |
2931 | return -1; | |
2932 | } | |
2933 | ||
2934 | start_addr += chunk_size; | |
2935 | } | |
2936 | } | |
2937 | ||
2938 | /* Not found. */ | |
2939 | ||
2940 | do_cleanups (old_cleanups); | |
2941 | return 0; | |
2942 | } | |
2943 | ||
2944 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the | |
2945 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2946 | ||
2947 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2948 | requiring halting of the search (e.g. memory read error). | |
2949 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2950 | ||
2951 | int | |
2952 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2953 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2954 | CORE_ADDR *found_addrp) | |
2955 | { | |
2956 | struct target_ops *t; | |
2957 | int found; | |
2958 | ||
2959 | /* We don't use INHERIT to set current_target.to_search_memory, | |
2960 | so we have to scan the target stack and handle targetdebug | |
2961 | ourselves. */ | |
2962 | ||
2963 | if (targetdebug) | |
2964 | fprintf_unfiltered (gdb_stdlog, "target_search_memory (%s, ...)\n", | |
2965 | hex_string (start_addr)); | |
2966 | ||
2967 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2968 | if (t->to_search_memory != NULL) | |
2969 | break; | |
2970 | ||
2971 | if (t != NULL) | |
2972 | { | |
2973 | found = t->to_search_memory (t, start_addr, search_space_len, | |
2974 | pattern, pattern_len, found_addrp); | |
2975 | } | |
2976 | else | |
2977 | { | |
2978 | /* If a special version of to_search_memory isn't available, use the | |
2979 | simple version. */ | |
c35b1492 | 2980 | found = simple_search_memory (current_target.beneath, |
08388c79 DE |
2981 | start_addr, search_space_len, |
2982 | pattern, pattern_len, found_addrp); | |
2983 | } | |
2984 | ||
2985 | if (targetdebug) | |
2986 | fprintf_unfiltered (gdb_stdlog, " = %d\n", found); | |
2987 | ||
2988 | return found; | |
2989 | } | |
2990 | ||
8edfe269 DJ |
2991 | /* Look through the currently pushed targets. If none of them will |
2992 | be able to restart the currently running process, issue an error | |
2993 | message. */ | |
2994 | ||
2995 | void | |
2996 | target_require_runnable (void) | |
2997 | { | |
2998 | struct target_ops *t; | |
2999 | ||
3000 | for (t = target_stack; t != NULL; t = t->beneath) | |
3001 | { | |
3002 | /* If this target knows how to create a new program, then | |
3003 | assume we will still be able to after killing the current | |
3004 | one. Either killing and mourning will not pop T, or else | |
3005 | find_default_run_target will find it again. */ | |
3006 | if (t->to_create_inferior != NULL) | |
3007 | return; | |
3008 | ||
3009 | /* Do not worry about thread_stratum targets that can not | |
3010 | create inferiors. Assume they will be pushed again if | |
3011 | necessary, and continue to the process_stratum. */ | |
85e747d2 UW |
3012 | if (t->to_stratum == thread_stratum |
3013 | || t->to_stratum == arch_stratum) | |
8edfe269 DJ |
3014 | continue; |
3015 | ||
3e43a32a MS |
3016 | error (_("The \"%s\" target does not support \"run\". " |
3017 | "Try \"help target\" or \"continue\"."), | |
8edfe269 DJ |
3018 | t->to_shortname); |
3019 | } | |
3020 | ||
3021 | /* This function is only called if the target is running. In that | |
3022 | case there should have been a process_stratum target and it | |
c378eb4e | 3023 | should either know how to create inferiors, or not... */ |
9b20d036 | 3024 | internal_error (__FILE__, __LINE__, _("No targets found")); |
8edfe269 DJ |
3025 | } |
3026 | ||
c906108c SS |
3027 | /* Look through the list of possible targets for a target that can |
3028 | execute a run or attach command without any other data. This is | |
3029 | used to locate the default process stratum. | |
3030 | ||
5f667f2d PA |
3031 | If DO_MESG is not NULL, the result is always valid (error() is |
3032 | called for errors); else, return NULL on error. */ | |
c906108c SS |
3033 | |
3034 | static struct target_ops * | |
fba45db2 | 3035 | find_default_run_target (char *do_mesg) |
c906108c SS |
3036 | { |
3037 | struct target_ops **t; | |
3038 | struct target_ops *runable = NULL; | |
3039 | int count; | |
3040 | ||
3041 | count = 0; | |
3042 | ||
3043 | for (t = target_structs; t < target_structs + target_struct_size; | |
3044 | ++t) | |
3045 | { | |
c5aa993b | 3046 | if ((*t)->to_can_run && target_can_run (*t)) |
c906108c SS |
3047 | { |
3048 | runable = *t; | |
3049 | ++count; | |
3050 | } | |
3051 | } | |
3052 | ||
3053 | if (count != 1) | |
5f667f2d PA |
3054 | { |
3055 | if (do_mesg) | |
3056 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
3057 | else | |
3058 | return NULL; | |
3059 | } | |
c906108c SS |
3060 | |
3061 | return runable; | |
3062 | } | |
3063 | ||
3064 | void | |
136d6dae | 3065 | find_default_attach (struct target_ops *ops, char *args, int from_tty) |
c906108c SS |
3066 | { |
3067 | struct target_ops *t; | |
3068 | ||
c5aa993b | 3069 | t = find_default_run_target ("attach"); |
136d6dae | 3070 | (t->to_attach) (t, args, from_tty); |
c906108c SS |
3071 | return; |
3072 | } | |
3073 | ||
c906108c | 3074 | void |
136d6dae VP |
3075 | find_default_create_inferior (struct target_ops *ops, |
3076 | char *exec_file, char *allargs, char **env, | |
c27cda74 | 3077 | int from_tty) |
c906108c SS |
3078 | { |
3079 | struct target_ops *t; | |
3080 | ||
c5aa993b | 3081 | t = find_default_run_target ("run"); |
136d6dae | 3082 | (t->to_create_inferior) (t, exec_file, allargs, env, from_tty); |
c906108c SS |
3083 | return; |
3084 | } | |
3085 | ||
2c0b251b | 3086 | static int |
6a109b6b | 3087 | find_default_can_async_p (struct target_ops *ignore) |
b84876c2 PA |
3088 | { |
3089 | struct target_ops *t; | |
3090 | ||
5f667f2d PA |
3091 | /* This may be called before the target is pushed on the stack; |
3092 | look for the default process stratum. If there's none, gdb isn't | |
3093 | configured with a native debugger, and target remote isn't | |
3094 | connected yet. */ | |
3095 | t = find_default_run_target (NULL); | |
6b84065d | 3096 | if (t && t->to_can_async_p != delegate_can_async_p) |
6a109b6b | 3097 | return (t->to_can_async_p) (t); |
b84876c2 PA |
3098 | return 0; |
3099 | } | |
3100 | ||
2c0b251b | 3101 | static int |
6a109b6b | 3102 | find_default_is_async_p (struct target_ops *ignore) |
b84876c2 PA |
3103 | { |
3104 | struct target_ops *t; | |
3105 | ||
5f667f2d PA |
3106 | /* This may be called before the target is pushed on the stack; |
3107 | look for the default process stratum. If there's none, gdb isn't | |
3108 | configured with a native debugger, and target remote isn't | |
3109 | connected yet. */ | |
3110 | t = find_default_run_target (NULL); | |
6b84065d | 3111 | if (t && t->to_is_async_p != delegate_is_async_p) |
6a109b6b | 3112 | return (t->to_is_async_p) (t); |
b84876c2 PA |
3113 | return 0; |
3114 | } | |
3115 | ||
2c0b251b | 3116 | static int |
2a9a2795 | 3117 | find_default_supports_non_stop (struct target_ops *self) |
9908b566 VP |
3118 | { |
3119 | struct target_ops *t; | |
3120 | ||
3121 | t = find_default_run_target (NULL); | |
3122 | if (t && t->to_supports_non_stop) | |
2a9a2795 | 3123 | return (t->to_supports_non_stop) (t); |
9908b566 VP |
3124 | return 0; |
3125 | } | |
3126 | ||
3127 | int | |
2c0b251b | 3128 | target_supports_non_stop (void) |
9908b566 VP |
3129 | { |
3130 | struct target_ops *t; | |
5d502164 | 3131 | |
9908b566 VP |
3132 | for (t = ¤t_target; t != NULL; t = t->beneath) |
3133 | if (t->to_supports_non_stop) | |
2a9a2795 | 3134 | return t->to_supports_non_stop (t); |
9908b566 VP |
3135 | |
3136 | return 0; | |
3137 | } | |
3138 | ||
145b16a9 UW |
3139 | /* Implement the "info proc" command. */ |
3140 | ||
451b7c33 | 3141 | int |
145b16a9 UW |
3142 | target_info_proc (char *args, enum info_proc_what what) |
3143 | { | |
3144 | struct target_ops *t; | |
3145 | ||
3146 | /* If we're already connected to something that can get us OS | |
3147 | related data, use it. Otherwise, try using the native | |
3148 | target. */ | |
3149 | if (current_target.to_stratum >= process_stratum) | |
3150 | t = current_target.beneath; | |
3151 | else | |
3152 | t = find_default_run_target (NULL); | |
3153 | ||
3154 | for (; t != NULL; t = t->beneath) | |
3155 | { | |
3156 | if (t->to_info_proc != NULL) | |
3157 | { | |
3158 | t->to_info_proc (t, args, what); | |
3159 | ||
3160 | if (targetdebug) | |
3161 | fprintf_unfiltered (gdb_stdlog, | |
3162 | "target_info_proc (\"%s\", %d)\n", args, what); | |
3163 | ||
451b7c33 | 3164 | return 1; |
145b16a9 UW |
3165 | } |
3166 | } | |
3167 | ||
451b7c33 | 3168 | return 0; |
145b16a9 UW |
3169 | } |
3170 | ||
03583c20 | 3171 | static int |
2bfc0540 | 3172 | find_default_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
3173 | { |
3174 | struct target_ops *t; | |
3175 | ||
3176 | t = find_default_run_target (NULL); | |
3177 | if (t && t->to_supports_disable_randomization) | |
2bfc0540 | 3178 | return (t->to_supports_disable_randomization) (t); |
03583c20 UW |
3179 | return 0; |
3180 | } | |
3181 | ||
3182 | int | |
3183 | target_supports_disable_randomization (void) | |
3184 | { | |
3185 | struct target_ops *t; | |
3186 | ||
3187 | for (t = ¤t_target; t != NULL; t = t->beneath) | |
3188 | if (t->to_supports_disable_randomization) | |
2bfc0540 | 3189 | return t->to_supports_disable_randomization (t); |
03583c20 UW |
3190 | |
3191 | return 0; | |
3192 | } | |
9908b566 | 3193 | |
07e059b5 VP |
3194 | char * |
3195 | target_get_osdata (const char *type) | |
3196 | { | |
07e059b5 VP |
3197 | struct target_ops *t; |
3198 | ||
739ef7fb PA |
3199 | /* If we're already connected to something that can get us OS |
3200 | related data, use it. Otherwise, try using the native | |
3201 | target. */ | |
3202 | if (current_target.to_stratum >= process_stratum) | |
6d097e65 | 3203 | t = current_target.beneath; |
739ef7fb PA |
3204 | else |
3205 | t = find_default_run_target ("get OS data"); | |
07e059b5 VP |
3206 | |
3207 | if (!t) | |
3208 | return NULL; | |
3209 | ||
6d097e65 | 3210 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
3211 | } |
3212 | ||
6c95b8df PA |
3213 | /* Determine the current address space of thread PTID. */ |
3214 | ||
3215 | struct address_space * | |
3216 | target_thread_address_space (ptid_t ptid) | |
3217 | { | |
c0694254 | 3218 | struct address_space *aspace; |
6c95b8df | 3219 | struct inferior *inf; |
c0694254 PA |
3220 | struct target_ops *t; |
3221 | ||
3222 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3223 | { | |
3224 | if (t->to_thread_address_space != NULL) | |
3225 | { | |
3226 | aspace = t->to_thread_address_space (t, ptid); | |
3227 | gdb_assert (aspace); | |
6c95b8df | 3228 | |
c0694254 PA |
3229 | if (targetdebug) |
3230 | fprintf_unfiltered (gdb_stdlog, | |
3231 | "target_thread_address_space (%s) = %d\n", | |
3232 | target_pid_to_str (ptid), | |
3233 | address_space_num (aspace)); | |
3234 | return aspace; | |
3235 | } | |
3236 | } | |
6c95b8df PA |
3237 | |
3238 | /* Fall-back to the "main" address space of the inferior. */ | |
3239 | inf = find_inferior_pid (ptid_get_pid (ptid)); | |
3240 | ||
3241 | if (inf == NULL || inf->aspace == NULL) | |
3e43a32a | 3242 | internal_error (__FILE__, __LINE__, |
9b20d036 MS |
3243 | _("Can't determine the current " |
3244 | "address space of thread %s\n"), | |
6c95b8df PA |
3245 | target_pid_to_str (ptid)); |
3246 | ||
3247 | return inf->aspace; | |
3248 | } | |
3249 | ||
7313baad UW |
3250 | |
3251 | /* Target file operations. */ | |
3252 | ||
3253 | static struct target_ops * | |
3254 | default_fileio_target (void) | |
3255 | { | |
3256 | /* If we're already connected to something that can perform | |
3257 | file I/O, use it. Otherwise, try using the native target. */ | |
3258 | if (current_target.to_stratum >= process_stratum) | |
3259 | return current_target.beneath; | |
3260 | else | |
3261 | return find_default_run_target ("file I/O"); | |
3262 | } | |
3263 | ||
3264 | /* Open FILENAME on the target, using FLAGS and MODE. Return a | |
3265 | target file descriptor, or -1 if an error occurs (and set | |
3266 | *TARGET_ERRNO). */ | |
3267 | int | |
3268 | target_fileio_open (const char *filename, int flags, int mode, | |
3269 | int *target_errno) | |
3270 | { | |
3271 | struct target_ops *t; | |
3272 | ||
3273 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3274 | { | |
3275 | if (t->to_fileio_open != NULL) | |
3276 | { | |
cd897586 | 3277 | int fd = t->to_fileio_open (t, filename, flags, mode, target_errno); |
7313baad UW |
3278 | |
3279 | if (targetdebug) | |
3280 | fprintf_unfiltered (gdb_stdlog, | |
3281 | "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n", | |
3282 | filename, flags, mode, | |
3283 | fd, fd != -1 ? 0 : *target_errno); | |
3284 | return fd; | |
3285 | } | |
3286 | } | |
3287 | ||
3288 | *target_errno = FILEIO_ENOSYS; | |
3289 | return -1; | |
3290 | } | |
3291 | ||
3292 | /* Write up to LEN bytes from WRITE_BUF to FD on the target. | |
3293 | Return the number of bytes written, or -1 if an error occurs | |
3294 | (and set *TARGET_ERRNO). */ | |
3295 | int | |
3296 | target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
3297 | ULONGEST offset, int *target_errno) | |
3298 | { | |
3299 | struct target_ops *t; | |
3300 | ||
3301 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3302 | { | |
3303 | if (t->to_fileio_pwrite != NULL) | |
3304 | { | |
0d866f62 | 3305 | int ret = t->to_fileio_pwrite (t, fd, write_buf, len, offset, |
7313baad UW |
3306 | target_errno); |
3307 | ||
3308 | if (targetdebug) | |
3309 | fprintf_unfiltered (gdb_stdlog, | |
a71b5a38 | 3310 | "target_fileio_pwrite (%d,...,%d,%s) " |
7313baad | 3311 | "= %d (%d)\n", |
a71b5a38 | 3312 | fd, len, pulongest (offset), |
7313baad UW |
3313 | ret, ret != -1 ? 0 : *target_errno); |
3314 | return ret; | |
3315 | } | |
3316 | } | |
3317 | ||
3318 | *target_errno = FILEIO_ENOSYS; | |
3319 | return -1; | |
3320 | } | |
3321 | ||
3322 | /* Read up to LEN bytes FD on the target into READ_BUF. | |
3323 | Return the number of bytes read, or -1 if an error occurs | |
3324 | (and set *TARGET_ERRNO). */ | |
3325 | int | |
3326 | target_fileio_pread (int fd, gdb_byte *read_buf, int len, | |
3327 | ULONGEST offset, int *target_errno) | |
3328 | { | |
3329 | struct target_ops *t; | |
3330 | ||
3331 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3332 | { | |
3333 | if (t->to_fileio_pread != NULL) | |
3334 | { | |
a3be983c | 3335 | int ret = t->to_fileio_pread (t, fd, read_buf, len, offset, |
7313baad UW |
3336 | target_errno); |
3337 | ||
3338 | if (targetdebug) | |
3339 | fprintf_unfiltered (gdb_stdlog, | |
a71b5a38 | 3340 | "target_fileio_pread (%d,...,%d,%s) " |
7313baad | 3341 | "= %d (%d)\n", |
a71b5a38 | 3342 | fd, len, pulongest (offset), |
7313baad UW |
3343 | ret, ret != -1 ? 0 : *target_errno); |
3344 | return ret; | |
3345 | } | |
3346 | } | |
3347 | ||
3348 | *target_errno = FILEIO_ENOSYS; | |
3349 | return -1; | |
3350 | } | |
3351 | ||
3352 | /* Close FD on the target. Return 0, or -1 if an error occurs | |
3353 | (and set *TARGET_ERRNO). */ | |
3354 | int | |
3355 | target_fileio_close (int fd, int *target_errno) | |
3356 | { | |
3357 | struct target_ops *t; | |
3358 | ||
3359 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3360 | { | |
3361 | if (t->to_fileio_close != NULL) | |
3362 | { | |
df39ea25 | 3363 | int ret = t->to_fileio_close (t, fd, target_errno); |
7313baad UW |
3364 | |
3365 | if (targetdebug) | |
3366 | fprintf_unfiltered (gdb_stdlog, | |
3367 | "target_fileio_close (%d) = %d (%d)\n", | |
3368 | fd, ret, ret != -1 ? 0 : *target_errno); | |
3369 | return ret; | |
3370 | } | |
3371 | } | |
3372 | ||
3373 | *target_errno = FILEIO_ENOSYS; | |
3374 | return -1; | |
3375 | } | |
3376 | ||
3377 | /* Unlink FILENAME on the target. Return 0, or -1 if an error | |
3378 | occurs (and set *TARGET_ERRNO). */ | |
3379 | int | |
3380 | target_fileio_unlink (const char *filename, int *target_errno) | |
3381 | { | |
3382 | struct target_ops *t; | |
3383 | ||
3384 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3385 | { | |
3386 | if (t->to_fileio_unlink != NULL) | |
3387 | { | |
dbbca37d | 3388 | int ret = t->to_fileio_unlink (t, filename, target_errno); |
7313baad UW |
3389 | |
3390 | if (targetdebug) | |
3391 | fprintf_unfiltered (gdb_stdlog, | |
3392 | "target_fileio_unlink (%s) = %d (%d)\n", | |
3393 | filename, ret, ret != -1 ? 0 : *target_errno); | |
3394 | return ret; | |
3395 | } | |
3396 | } | |
3397 | ||
3398 | *target_errno = FILEIO_ENOSYS; | |
3399 | return -1; | |
3400 | } | |
3401 | ||
b9e7b9c3 UW |
3402 | /* Read value of symbolic link FILENAME on the target. Return a |
3403 | null-terminated string allocated via xmalloc, or NULL if an error | |
3404 | occurs (and set *TARGET_ERRNO). */ | |
3405 | char * | |
3406 | target_fileio_readlink (const char *filename, int *target_errno) | |
3407 | { | |
3408 | struct target_ops *t; | |
3409 | ||
3410 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3411 | { | |
3412 | if (t->to_fileio_readlink != NULL) | |
3413 | { | |
fab5aa7c | 3414 | char *ret = t->to_fileio_readlink (t, filename, target_errno); |
b9e7b9c3 UW |
3415 | |
3416 | if (targetdebug) | |
3417 | fprintf_unfiltered (gdb_stdlog, | |
3418 | "target_fileio_readlink (%s) = %s (%d)\n", | |
3419 | filename, ret? ret : "(nil)", | |
3420 | ret? 0 : *target_errno); | |
3421 | return ret; | |
3422 | } | |
3423 | } | |
3424 | ||
3425 | *target_errno = FILEIO_ENOSYS; | |
3426 | return NULL; | |
3427 | } | |
3428 | ||
7313baad UW |
3429 | static void |
3430 | target_fileio_close_cleanup (void *opaque) | |
3431 | { | |
3432 | int fd = *(int *) opaque; | |
3433 | int target_errno; | |
3434 | ||
3435 | target_fileio_close (fd, &target_errno); | |
3436 | } | |
3437 | ||
3438 | /* Read target file FILENAME. Store the result in *BUF_P and | |
3439 | return the size of the transferred data. PADDING additional bytes are | |
3440 | available in *BUF_P. This is a helper function for | |
3441 | target_fileio_read_alloc; see the declaration of that function for more | |
3442 | information. */ | |
3443 | ||
3444 | static LONGEST | |
3445 | target_fileio_read_alloc_1 (const char *filename, | |
3446 | gdb_byte **buf_p, int padding) | |
3447 | { | |
3448 | struct cleanup *close_cleanup; | |
3449 | size_t buf_alloc, buf_pos; | |
3450 | gdb_byte *buf; | |
3451 | LONGEST n; | |
3452 | int fd; | |
3453 | int target_errno; | |
3454 | ||
3455 | fd = target_fileio_open (filename, FILEIO_O_RDONLY, 0700, &target_errno); | |
3456 | if (fd == -1) | |
3457 | return -1; | |
3458 | ||
3459 | close_cleanup = make_cleanup (target_fileio_close_cleanup, &fd); | |
3460 | ||
3461 | /* Start by reading up to 4K at a time. The target will throttle | |
3462 | this number down if necessary. */ | |
3463 | buf_alloc = 4096; | |
3464 | buf = xmalloc (buf_alloc); | |
3465 | buf_pos = 0; | |
3466 | while (1) | |
3467 | { | |
3468 | n = target_fileio_pread (fd, &buf[buf_pos], | |
3469 | buf_alloc - buf_pos - padding, buf_pos, | |
3470 | &target_errno); | |
3471 | if (n < 0) | |
3472 | { | |
3473 | /* An error occurred. */ | |
3474 | do_cleanups (close_cleanup); | |
3475 | xfree (buf); | |
3476 | return -1; | |
3477 | } | |
3478 | else if (n == 0) | |
3479 | { | |
3480 | /* Read all there was. */ | |
3481 | do_cleanups (close_cleanup); | |
3482 | if (buf_pos == 0) | |
3483 | xfree (buf); | |
3484 | else | |
3485 | *buf_p = buf; | |
3486 | return buf_pos; | |
3487 | } | |
3488 | ||
3489 | buf_pos += n; | |
3490 | ||
3491 | /* If the buffer is filling up, expand it. */ | |
3492 | if (buf_alloc < buf_pos * 2) | |
3493 | { | |
3494 | buf_alloc *= 2; | |
3495 | buf = xrealloc (buf, buf_alloc); | |
3496 | } | |
3497 | ||
3498 | QUIT; | |
3499 | } | |
3500 | } | |
3501 | ||
3502 | /* Read target file FILENAME. Store the result in *BUF_P and return | |
3503 | the size of the transferred data. See the declaration in "target.h" | |
3504 | function for more information about the return value. */ | |
3505 | ||
3506 | LONGEST | |
3507 | target_fileio_read_alloc (const char *filename, gdb_byte **buf_p) | |
3508 | { | |
3509 | return target_fileio_read_alloc_1 (filename, buf_p, 0); | |
3510 | } | |
3511 | ||
3512 | /* Read target file FILENAME. The result is NUL-terminated and | |
3513 | returned as a string, allocated using xmalloc. If an error occurs | |
3514 | or the transfer is unsupported, NULL is returned. Empty objects | |
3515 | are returned as allocated but empty strings. A warning is issued | |
3516 | if the result contains any embedded NUL bytes. */ | |
3517 | ||
3518 | char * | |
3519 | target_fileio_read_stralloc (const char *filename) | |
3520 | { | |
39086a0e PA |
3521 | gdb_byte *buffer; |
3522 | char *bufstr; | |
7313baad UW |
3523 | LONGEST i, transferred; |
3524 | ||
39086a0e PA |
3525 | transferred = target_fileio_read_alloc_1 (filename, &buffer, 1); |
3526 | bufstr = (char *) buffer; | |
7313baad UW |
3527 | |
3528 | if (transferred < 0) | |
3529 | return NULL; | |
3530 | ||
3531 | if (transferred == 0) | |
3532 | return xstrdup (""); | |
3533 | ||
39086a0e | 3534 | bufstr[transferred] = 0; |
7313baad UW |
3535 | |
3536 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
39086a0e PA |
3537 | for (i = strlen (bufstr); i < transferred; i++) |
3538 | if (bufstr[i] != 0) | |
7313baad UW |
3539 | { |
3540 | warning (_("target file %s " | |
3541 | "contained unexpected null characters"), | |
3542 | filename); | |
3543 | break; | |
3544 | } | |
3545 | ||
39086a0e | 3546 | return bufstr; |
7313baad UW |
3547 | } |
3548 | ||
3549 | ||
e0d24f8d | 3550 | static int |
31568a15 TT |
3551 | default_region_ok_for_hw_watchpoint (struct target_ops *self, |
3552 | CORE_ADDR addr, int len) | |
e0d24f8d | 3553 | { |
f5656ead | 3554 | return (len <= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT); |
ccaa32c7 GS |
3555 | } |
3556 | ||
5009afc5 AS |
3557 | static int |
3558 | default_watchpoint_addr_within_range (struct target_ops *target, | |
3559 | CORE_ADDR addr, | |
3560 | CORE_ADDR start, int length) | |
3561 | { | |
3562 | return addr >= start && addr < start + length; | |
3563 | } | |
3564 | ||
c2250ad1 UW |
3565 | static struct gdbarch * |
3566 | default_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
3567 | { | |
f5656ead | 3568 | return target_gdbarch (); |
c2250ad1 UW |
3569 | } |
3570 | ||
c906108c | 3571 | static int |
fba45db2 | 3572 | return_zero (void) |
c906108c SS |
3573 | { |
3574 | return 0; | |
3575 | } | |
3576 | ||
ccaa32c7 GS |
3577 | static int |
3578 | return_minus_one (void) | |
3579 | { | |
3580 | return -1; | |
3581 | } | |
3582 | ||
1b67eb02 AS |
3583 | static void * |
3584 | return_null (void) | |
3585 | { | |
3586 | return 0; | |
3587 | } | |
3588 | ||
ed9a39eb JM |
3589 | /* |
3590 | * Find the next target down the stack from the specified target. | |
3591 | */ | |
3592 | ||
3593 | struct target_ops * | |
fba45db2 | 3594 | find_target_beneath (struct target_ops *t) |
ed9a39eb | 3595 | { |
258b763a | 3596 | return t->beneath; |
ed9a39eb JM |
3597 | } |
3598 | ||
8b06beed TT |
3599 | /* See target.h. */ |
3600 | ||
3601 | struct target_ops * | |
3602 | find_target_at (enum strata stratum) | |
3603 | { | |
3604 | struct target_ops *t; | |
3605 | ||
3606 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3607 | if (t->to_stratum == stratum) | |
3608 | return t; | |
3609 | ||
3610 | return NULL; | |
3611 | } | |
3612 | ||
c906108c SS |
3613 | \f |
3614 | /* The inferior process has died. Long live the inferior! */ | |
3615 | ||
3616 | void | |
fba45db2 | 3617 | generic_mourn_inferior (void) |
c906108c | 3618 | { |
7f9f62ba | 3619 | ptid_t ptid; |
c906108c | 3620 | |
7f9f62ba | 3621 | ptid = inferior_ptid; |
39f77062 | 3622 | inferior_ptid = null_ptid; |
7f9f62ba | 3623 | |
f59f708a PA |
3624 | /* Mark breakpoints uninserted in case something tries to delete a |
3625 | breakpoint while we delete the inferior's threads (which would | |
3626 | fail, since the inferior is long gone). */ | |
3627 | mark_breakpoints_out (); | |
3628 | ||
7f9f62ba PA |
3629 | if (!ptid_equal (ptid, null_ptid)) |
3630 | { | |
3631 | int pid = ptid_get_pid (ptid); | |
6c95b8df | 3632 | exit_inferior (pid); |
7f9f62ba PA |
3633 | } |
3634 | ||
f59f708a PA |
3635 | /* Note this wipes step-resume breakpoints, so needs to be done |
3636 | after exit_inferior, which ends up referencing the step-resume | |
3637 | breakpoints through clear_thread_inferior_resources. */ | |
c906108c | 3638 | breakpoint_init_inferior (inf_exited); |
f59f708a | 3639 | |
c906108c SS |
3640 | registers_changed (); |
3641 | ||
c906108c SS |
3642 | reopen_exec_file (); |
3643 | reinit_frame_cache (); | |
3644 | ||
9a4105ab AC |
3645 | if (deprecated_detach_hook) |
3646 | deprecated_detach_hook (); | |
c906108c SS |
3647 | } |
3648 | \f | |
fd0a2a6f MK |
3649 | /* Convert a normal process ID to a string. Returns the string in a |
3650 | static buffer. */ | |
c906108c SS |
3651 | |
3652 | char * | |
39f77062 | 3653 | normal_pid_to_str (ptid_t ptid) |
c906108c | 3654 | { |
fd0a2a6f | 3655 | static char buf[32]; |
c906108c | 3656 | |
5fff8fc0 | 3657 | xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid)); |
c906108c SS |
3658 | return buf; |
3659 | } | |
3660 | ||
2c0b251b | 3661 | static char * |
117de6a9 PA |
3662 | dummy_pid_to_str (struct target_ops *ops, ptid_t ptid) |
3663 | { | |
3664 | return normal_pid_to_str (ptid); | |
3665 | } | |
3666 | ||
9b4eba8e HZ |
3667 | /* Error-catcher for target_find_memory_regions. */ |
3668 | static int | |
2e73927c TT |
3669 | dummy_find_memory_regions (struct target_ops *self, |
3670 | find_memory_region_ftype ignore1, void *ignore2) | |
be4d1333 | 3671 | { |
9b4eba8e | 3672 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3673 | return 0; |
3674 | } | |
3675 | ||
9b4eba8e HZ |
3676 | /* Error-catcher for target_make_corefile_notes. */ |
3677 | static char * | |
fc6691b2 TT |
3678 | dummy_make_corefile_notes (struct target_ops *self, |
3679 | bfd *ignore1, int *ignore2) | |
be4d1333 | 3680 | { |
9b4eba8e | 3681 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3682 | return NULL; |
3683 | } | |
3684 | ||
c906108c SS |
3685 | /* Set up the handful of non-empty slots needed by the dummy target |
3686 | vector. */ | |
3687 | ||
3688 | static void | |
fba45db2 | 3689 | init_dummy_target (void) |
c906108c SS |
3690 | { |
3691 | dummy_target.to_shortname = "None"; | |
3692 | dummy_target.to_longname = "None"; | |
3693 | dummy_target.to_doc = ""; | |
c906108c | 3694 | dummy_target.to_create_inferior = find_default_create_inferior; |
9908b566 | 3695 | dummy_target.to_supports_non_stop = find_default_supports_non_stop; |
03583c20 UW |
3696 | dummy_target.to_supports_disable_randomization |
3697 | = find_default_supports_disable_randomization; | |
117de6a9 | 3698 | dummy_target.to_pid_to_str = dummy_pid_to_str; |
c906108c | 3699 | dummy_target.to_stratum = dummy_stratum; |
c35b1492 PA |
3700 | dummy_target.to_has_all_memory = (int (*) (struct target_ops *)) return_zero; |
3701 | dummy_target.to_has_memory = (int (*) (struct target_ops *)) return_zero; | |
3702 | dummy_target.to_has_stack = (int (*) (struct target_ops *)) return_zero; | |
3703 | dummy_target.to_has_registers = (int (*) (struct target_ops *)) return_zero; | |
aeaec162 TT |
3704 | dummy_target.to_has_execution |
3705 | = (int (*) (struct target_ops *, ptid_t)) return_zero; | |
c906108c | 3706 | dummy_target.to_magic = OPS_MAGIC; |
1101cb7b TT |
3707 | |
3708 | install_dummy_methods (&dummy_target); | |
c906108c | 3709 | } |
c906108c | 3710 | \f |
c906108c | 3711 | static void |
fba45db2 | 3712 | debug_to_open (char *args, int from_tty) |
c906108c SS |
3713 | { |
3714 | debug_target.to_open (args, from_tty); | |
3715 | ||
96baa820 | 3716 | fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty); |
c906108c SS |
3717 | } |
3718 | ||
f1c07ab0 | 3719 | void |
460014f5 | 3720 | target_close (struct target_ops *targ) |
f1c07ab0 | 3721 | { |
7fdc1521 TT |
3722 | gdb_assert (!target_is_pushed (targ)); |
3723 | ||
f1c07ab0 | 3724 | if (targ->to_xclose != NULL) |
460014f5 | 3725 | targ->to_xclose (targ); |
f1c07ab0 | 3726 | else if (targ->to_close != NULL) |
de90e03d | 3727 | targ->to_close (targ); |
947b8855 PA |
3728 | |
3729 | if (targetdebug) | |
460014f5 | 3730 | fprintf_unfiltered (gdb_stdlog, "target_close ()\n"); |
f1c07ab0 AC |
3731 | } |
3732 | ||
136d6dae VP |
3733 | void |
3734 | target_attach (char *args, int from_tty) | |
3735 | { | |
e9a29200 TT |
3736 | current_target.to_attach (¤t_target, args, from_tty); |
3737 | if (targetdebug) | |
3738 | fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n", | |
3739 | args, from_tty); | |
136d6dae VP |
3740 | } |
3741 | ||
28439f5e PA |
3742 | int |
3743 | target_thread_alive (ptid_t ptid) | |
c906108c | 3744 | { |
28439f5e | 3745 | struct target_ops *t; |
5d502164 | 3746 | |
28439f5e PA |
3747 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3748 | { | |
3749 | if (t->to_thread_alive != NULL) | |
3750 | { | |
3751 | int retval; | |
c906108c | 3752 | |
28439f5e PA |
3753 | retval = t->to_thread_alive (t, ptid); |
3754 | if (targetdebug) | |
3755 | fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n", | |
dfd4cc63 | 3756 | ptid_get_pid (ptid), retval); |
28439f5e PA |
3757 | |
3758 | return retval; | |
3759 | } | |
3760 | } | |
3761 | ||
3762 | return 0; | |
3763 | } | |
3764 | ||
3765 | void | |
3766 | target_find_new_threads (void) | |
3767 | { | |
3768 | struct target_ops *t; | |
5d502164 | 3769 | |
28439f5e PA |
3770 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3771 | { | |
3772 | if (t->to_find_new_threads != NULL) | |
3773 | { | |
3774 | t->to_find_new_threads (t); | |
3775 | if (targetdebug) | |
3776 | fprintf_unfiltered (gdb_stdlog, "target_find_new_threads ()\n"); | |
3777 | ||
3778 | return; | |
3779 | } | |
3780 | } | |
c906108c SS |
3781 | } |
3782 | ||
d914c394 SS |
3783 | void |
3784 | target_stop (ptid_t ptid) | |
3785 | { | |
3786 | if (!may_stop) | |
3787 | { | |
3788 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3789 | return; | |
3790 | } | |
3791 | ||
1eab8a48 | 3792 | (*current_target.to_stop) (¤t_target, ptid); |
d914c394 SS |
3793 | } |
3794 | ||
c906108c | 3795 | static void |
f045800c | 3796 | debug_to_post_attach (struct target_ops *self, int pid) |
c906108c | 3797 | { |
f045800c | 3798 | debug_target.to_post_attach (&debug_target, pid); |
c906108c | 3799 | |
28439f5e | 3800 | fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid); |
c906108c SS |
3801 | } |
3802 | ||
09826ec5 PA |
3803 | /* Concatenate ELEM to LIST, a comma separate list, and return the |
3804 | result. The LIST incoming argument is released. */ | |
3805 | ||
3806 | static char * | |
3807 | str_comma_list_concat_elem (char *list, const char *elem) | |
3808 | { | |
3809 | if (list == NULL) | |
3810 | return xstrdup (elem); | |
3811 | else | |
3812 | return reconcat (list, list, ", ", elem, (char *) NULL); | |
3813 | } | |
3814 | ||
3815 | /* Helper for target_options_to_string. If OPT is present in | |
3816 | TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET. | |
3817 | Returns the new resulting string. OPT is removed from | |
3818 | TARGET_OPTIONS. */ | |
3819 | ||
3820 | static char * | |
3821 | do_option (int *target_options, char *ret, | |
3822 | int opt, char *opt_str) | |
3823 | { | |
3824 | if ((*target_options & opt) != 0) | |
3825 | { | |
3826 | ret = str_comma_list_concat_elem (ret, opt_str); | |
3827 | *target_options &= ~opt; | |
3828 | } | |
3829 | ||
3830 | return ret; | |
3831 | } | |
3832 | ||
3833 | char * | |
3834 | target_options_to_string (int target_options) | |
3835 | { | |
3836 | char *ret = NULL; | |
3837 | ||
3838 | #define DO_TARG_OPTION(OPT) \ | |
3839 | ret = do_option (&target_options, ret, OPT, #OPT) | |
3840 | ||
3841 | DO_TARG_OPTION (TARGET_WNOHANG); | |
3842 | ||
3843 | if (target_options != 0) | |
3844 | ret = str_comma_list_concat_elem (ret, "unknown???"); | |
3845 | ||
3846 | if (ret == NULL) | |
3847 | ret = xstrdup (""); | |
3848 | return ret; | |
3849 | } | |
3850 | ||
bf0c5130 | 3851 | static void |
56be3814 UW |
3852 | debug_print_register (const char * func, |
3853 | struct regcache *regcache, int regno) | |
bf0c5130 | 3854 | { |
f8d29908 | 3855 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
5d502164 | 3856 | |
bf0c5130 | 3857 | fprintf_unfiltered (gdb_stdlog, "%s ", func); |
f8d29908 | 3858 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) |
f8d29908 UW |
3859 | && gdbarch_register_name (gdbarch, regno) != NULL |
3860 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') | |
3861 | fprintf_unfiltered (gdb_stdlog, "(%s)", | |
3862 | gdbarch_register_name (gdbarch, regno)); | |
bf0c5130 AC |
3863 | else |
3864 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
0ff58721 | 3865 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) |
bf0c5130 | 3866 | { |
e17a4113 | 3867 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
f8d29908 | 3868 | int i, size = register_size (gdbarch, regno); |
e362b510 | 3869 | gdb_byte buf[MAX_REGISTER_SIZE]; |
5d502164 | 3870 | |
0ff58721 | 3871 | regcache_raw_collect (regcache, regno, buf); |
bf0c5130 | 3872 | fprintf_unfiltered (gdb_stdlog, " = "); |
81c4a259 | 3873 | for (i = 0; i < size; i++) |
bf0c5130 AC |
3874 | { |
3875 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
3876 | } | |
81c4a259 | 3877 | if (size <= sizeof (LONGEST)) |
bf0c5130 | 3878 | { |
e17a4113 | 3879 | ULONGEST val = extract_unsigned_integer (buf, size, byte_order); |
5d502164 | 3880 | |
0b1553bc UW |
3881 | fprintf_unfiltered (gdb_stdlog, " %s %s", |
3882 | core_addr_to_string_nz (val), plongest (val)); | |
bf0c5130 AC |
3883 | } |
3884 | } | |
3885 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
3886 | } | |
3887 | ||
28439f5e PA |
3888 | void |
3889 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 3890 | { |
28439f5e | 3891 | struct target_ops *t; |
5d502164 | 3892 | |
28439f5e PA |
3893 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3894 | { | |
3895 | if (t->to_fetch_registers != NULL) | |
3896 | { | |
3897 | t->to_fetch_registers (t, regcache, regno); | |
3898 | if (targetdebug) | |
3899 | debug_print_register ("target_fetch_registers", regcache, regno); | |
3900 | return; | |
3901 | } | |
3902 | } | |
c906108c SS |
3903 | } |
3904 | ||
28439f5e PA |
3905 | void |
3906 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 3907 | { |
28439f5e | 3908 | struct target_ops *t; |
5d502164 | 3909 | |
d914c394 SS |
3910 | if (!may_write_registers) |
3911 | error (_("Writing to registers is not allowed (regno %d)"), regno); | |
3912 | ||
6b84065d TT |
3913 | current_target.to_store_registers (¤t_target, regcache, regno); |
3914 | if (targetdebug) | |
28439f5e | 3915 | { |
6b84065d | 3916 | debug_print_register ("target_store_registers", regcache, regno); |
28439f5e | 3917 | } |
c906108c SS |
3918 | } |
3919 | ||
dc146f7c VP |
3920 | int |
3921 | target_core_of_thread (ptid_t ptid) | |
3922 | { | |
3923 | struct target_ops *t; | |
3924 | ||
3925 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3926 | { | |
3927 | if (t->to_core_of_thread != NULL) | |
3928 | { | |
3929 | int retval = t->to_core_of_thread (t, ptid); | |
5d502164 | 3930 | |
dc146f7c | 3931 | if (targetdebug) |
3e43a32a MS |
3932 | fprintf_unfiltered (gdb_stdlog, |
3933 | "target_core_of_thread (%d) = %d\n", | |
dfd4cc63 | 3934 | ptid_get_pid (ptid), retval); |
dc146f7c VP |
3935 | return retval; |
3936 | } | |
3937 | } | |
3938 | ||
3939 | return -1; | |
3940 | } | |
3941 | ||
4a5e7a5b PA |
3942 | int |
3943 | target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3944 | { | |
3945 | struct target_ops *t; | |
3946 | ||
3947 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3948 | { | |
3949 | if (t->to_verify_memory != NULL) | |
3950 | { | |
3951 | int retval = t->to_verify_memory (t, data, memaddr, size); | |
5d502164 | 3952 | |
4a5e7a5b | 3953 | if (targetdebug) |
3e43a32a MS |
3954 | fprintf_unfiltered (gdb_stdlog, |
3955 | "target_verify_memory (%s, %s) = %d\n", | |
f5656ead | 3956 | paddress (target_gdbarch (), memaddr), |
4a5e7a5b PA |
3957 | pulongest (size), |
3958 | retval); | |
3959 | return retval; | |
3960 | } | |
3961 | } | |
3962 | ||
3963 | tcomplain (); | |
3964 | } | |
3965 | ||
9c06b0b4 TJB |
3966 | /* The documentation for this function is in its prototype declaration in |
3967 | target.h. */ | |
3968 | ||
3969 | int | |
3970 | target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
3971 | { | |
3972 | struct target_ops *t; | |
3973 | ||
3974 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3975 | if (t->to_insert_mask_watchpoint != NULL) | |
3976 | { | |
3977 | int ret; | |
3978 | ||
3979 | ret = t->to_insert_mask_watchpoint (t, addr, mask, rw); | |
3980 | ||
3981 | if (targetdebug) | |
3982 | fprintf_unfiltered (gdb_stdlog, "\ | |
3983 | target_insert_mask_watchpoint (%s, %s, %d) = %d\n", | |
3984 | core_addr_to_string (addr), | |
3985 | core_addr_to_string (mask), rw, ret); | |
3986 | ||
3987 | return ret; | |
3988 | } | |
3989 | ||
3990 | return 1; | |
3991 | } | |
3992 | ||
3993 | /* The documentation for this function is in its prototype declaration in | |
3994 | target.h. */ | |
3995 | ||
3996 | int | |
3997 | target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
3998 | { | |
3999 | struct target_ops *t; | |
4000 | ||
4001 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4002 | if (t->to_remove_mask_watchpoint != NULL) | |
4003 | { | |
4004 | int ret; | |
4005 | ||
4006 | ret = t->to_remove_mask_watchpoint (t, addr, mask, rw); | |
4007 | ||
4008 | if (targetdebug) | |
4009 | fprintf_unfiltered (gdb_stdlog, "\ | |
4010 | target_remove_mask_watchpoint (%s, %s, %d) = %d\n", | |
4011 | core_addr_to_string (addr), | |
4012 | core_addr_to_string (mask), rw, ret); | |
4013 | ||
4014 | return ret; | |
4015 | } | |
4016 | ||
4017 | return 1; | |
4018 | } | |
4019 | ||
4020 | /* The documentation for this function is in its prototype declaration | |
4021 | in target.h. */ | |
4022 | ||
4023 | int | |
4024 | target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask) | |
4025 | { | |
4026 | struct target_ops *t; | |
4027 | ||
4028 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4029 | if (t->to_masked_watch_num_registers != NULL) | |
4030 | return t->to_masked_watch_num_registers (t, addr, mask); | |
4031 | ||
4032 | return -1; | |
4033 | } | |
4034 | ||
f1310107 TJB |
4035 | /* The documentation for this function is in its prototype declaration |
4036 | in target.h. */ | |
4037 | ||
4038 | int | |
4039 | target_ranged_break_num_registers (void) | |
4040 | { | |
4041 | struct target_ops *t; | |
4042 | ||
4043 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4044 | if (t->to_ranged_break_num_registers != NULL) | |
4045 | return t->to_ranged_break_num_registers (t); | |
4046 | ||
4047 | return -1; | |
4048 | } | |
4049 | ||
02d27625 MM |
4050 | /* See target.h. */ |
4051 | ||
02d27625 MM |
4052 | struct btrace_target_info * |
4053 | target_enable_btrace (ptid_t ptid) | |
4054 | { | |
4055 | struct target_ops *t; | |
4056 | ||
4057 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4058 | if (t->to_enable_btrace != NULL) | |
e3c49f88 | 4059 | return t->to_enable_btrace (t, ptid); |
02d27625 MM |
4060 | |
4061 | tcomplain (); | |
4062 | return NULL; | |
4063 | } | |
4064 | ||
4065 | /* See target.h. */ | |
4066 | ||
4067 | void | |
4068 | target_disable_btrace (struct btrace_target_info *btinfo) | |
4069 | { | |
4070 | struct target_ops *t; | |
4071 | ||
4072 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4073 | if (t->to_disable_btrace != NULL) | |
d92f7ee3 | 4074 | { |
25e95349 | 4075 | t->to_disable_btrace (t, btinfo); |
d92f7ee3 SDJ |
4076 | return; |
4077 | } | |
02d27625 MM |
4078 | |
4079 | tcomplain (); | |
4080 | } | |
4081 | ||
4082 | /* See target.h. */ | |
4083 | ||
4084 | void | |
4085 | target_teardown_btrace (struct btrace_target_info *btinfo) | |
4086 | { | |
4087 | struct target_ops *t; | |
4088 | ||
4089 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4090 | if (t->to_teardown_btrace != NULL) | |
d92f7ee3 | 4091 | { |
1777056d | 4092 | t->to_teardown_btrace (t, btinfo); |
d92f7ee3 SDJ |
4093 | return; |
4094 | } | |
02d27625 MM |
4095 | |
4096 | tcomplain (); | |
4097 | } | |
4098 | ||
4099 | /* See target.h. */ | |
4100 | ||
969c39fb MM |
4101 | enum btrace_error |
4102 | target_read_btrace (VEC (btrace_block_s) **btrace, | |
4103 | struct btrace_target_info *btinfo, | |
02d27625 MM |
4104 | enum btrace_read_type type) |
4105 | { | |
4106 | struct target_ops *t; | |
4107 | ||
4108 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4109 | if (t->to_read_btrace != NULL) | |
39c49f83 | 4110 | return t->to_read_btrace (t, btrace, btinfo, type); |
02d27625 MM |
4111 | |
4112 | tcomplain (); | |
969c39fb | 4113 | return BTRACE_ERR_NOT_SUPPORTED; |
02d27625 MM |
4114 | } |
4115 | ||
d02ed0bb MM |
4116 | /* See target.h. */ |
4117 | ||
7c1687a9 MM |
4118 | void |
4119 | target_stop_recording (void) | |
4120 | { | |
4121 | struct target_ops *t; | |
4122 | ||
4123 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4124 | if (t->to_stop_recording != NULL) | |
4125 | { | |
c6cd7c02 | 4126 | t->to_stop_recording (t); |
7c1687a9 MM |
4127 | return; |
4128 | } | |
4129 | ||
4130 | /* This is optional. */ | |
4131 | } | |
4132 | ||
4133 | /* See target.h. */ | |
4134 | ||
d02ed0bb MM |
4135 | void |
4136 | target_info_record (void) | |
4137 | { | |
4138 | struct target_ops *t; | |
4139 | ||
4140 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4141 | if (t->to_info_record != NULL) | |
4142 | { | |
630d6a4a | 4143 | t->to_info_record (t); |
d02ed0bb MM |
4144 | return; |
4145 | } | |
4146 | ||
4147 | tcomplain (); | |
4148 | } | |
4149 | ||
4150 | /* See target.h. */ | |
4151 | ||
4152 | void | |
85e1311a | 4153 | target_save_record (const char *filename) |
d02ed0bb MM |
4154 | { |
4155 | struct target_ops *t; | |
4156 | ||
4157 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4158 | if (t->to_save_record != NULL) | |
4159 | { | |
1390f529 | 4160 | t->to_save_record (t, filename); |
d02ed0bb MM |
4161 | return; |
4162 | } | |
4163 | ||
4164 | tcomplain (); | |
4165 | } | |
4166 | ||
4167 | /* See target.h. */ | |
4168 | ||
4169 | int | |
4170 | target_supports_delete_record (void) | |
4171 | { | |
4172 | struct target_ops *t; | |
4173 | ||
4174 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4175 | if (t->to_delete_record != NULL) | |
4176 | return 1; | |
4177 | ||
4178 | return 0; | |
4179 | } | |
4180 | ||
4181 | /* See target.h. */ | |
4182 | ||
4183 | void | |
4184 | target_delete_record (void) | |
4185 | { | |
4186 | struct target_ops *t; | |
4187 | ||
4188 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4189 | if (t->to_delete_record != NULL) | |
4190 | { | |
d1b55219 | 4191 | t->to_delete_record (t); |
d02ed0bb MM |
4192 | return; |
4193 | } | |
4194 | ||
4195 | tcomplain (); | |
4196 | } | |
4197 | ||
4198 | /* See target.h. */ | |
4199 | ||
4200 | int | |
4201 | target_record_is_replaying (void) | |
4202 | { | |
4203 | struct target_ops *t; | |
4204 | ||
4205 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4206 | if (t->to_record_is_replaying != NULL) | |
1c63c994 | 4207 | return t->to_record_is_replaying (t); |
d02ed0bb MM |
4208 | |
4209 | return 0; | |
4210 | } | |
4211 | ||
4212 | /* See target.h. */ | |
4213 | ||
4214 | void | |
4215 | target_goto_record_begin (void) | |
4216 | { | |
4217 | struct target_ops *t; | |
4218 | ||
4219 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4220 | if (t->to_goto_record_begin != NULL) | |
4221 | { | |
08475817 | 4222 | t->to_goto_record_begin (t); |
d02ed0bb MM |
4223 | return; |
4224 | } | |
4225 | ||
4226 | tcomplain (); | |
4227 | } | |
4228 | ||
4229 | /* See target.h. */ | |
4230 | ||
4231 | void | |
4232 | target_goto_record_end (void) | |
4233 | { | |
4234 | struct target_ops *t; | |
4235 | ||
4236 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4237 | if (t->to_goto_record_end != NULL) | |
4238 | { | |
307a1b91 | 4239 | t->to_goto_record_end (t); |
d02ed0bb MM |
4240 | return; |
4241 | } | |
4242 | ||
4243 | tcomplain (); | |
4244 | } | |
4245 | ||
4246 | /* See target.h. */ | |
4247 | ||
4248 | void | |
4249 | target_goto_record (ULONGEST insn) | |
4250 | { | |
4251 | struct target_ops *t; | |
4252 | ||
4253 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4254 | if (t->to_goto_record != NULL) | |
4255 | { | |
606183ac | 4256 | t->to_goto_record (t, insn); |
d02ed0bb MM |
4257 | return; |
4258 | } | |
4259 | ||
4260 | tcomplain (); | |
4261 | } | |
4262 | ||
67c86d06 MM |
4263 | /* See target.h. */ |
4264 | ||
4265 | void | |
4266 | target_insn_history (int size, int flags) | |
4267 | { | |
4268 | struct target_ops *t; | |
4269 | ||
4270 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4271 | if (t->to_insn_history != NULL) | |
4272 | { | |
7a6c5609 | 4273 | t->to_insn_history (t, size, flags); |
67c86d06 MM |
4274 | return; |
4275 | } | |
4276 | ||
4277 | tcomplain (); | |
4278 | } | |
4279 | ||
4280 | /* See target.h. */ | |
4281 | ||
4282 | void | |
4283 | target_insn_history_from (ULONGEST from, int size, int flags) | |
4284 | { | |
4285 | struct target_ops *t; | |
4286 | ||
4287 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4288 | if (t->to_insn_history_from != NULL) | |
4289 | { | |
9abc3ff3 | 4290 | t->to_insn_history_from (t, from, size, flags); |
67c86d06 MM |
4291 | return; |
4292 | } | |
4293 | ||
4294 | tcomplain (); | |
4295 | } | |
4296 | ||
4297 | /* See target.h. */ | |
4298 | ||
4299 | void | |
4300 | target_insn_history_range (ULONGEST begin, ULONGEST end, int flags) | |
4301 | { | |
4302 | struct target_ops *t; | |
4303 | ||
4304 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4305 | if (t->to_insn_history_range != NULL) | |
4306 | { | |
4e99c6b7 | 4307 | t->to_insn_history_range (t, begin, end, flags); |
67c86d06 MM |
4308 | return; |
4309 | } | |
4310 | ||
4311 | tcomplain (); | |
4312 | } | |
4313 | ||
15984c13 MM |
4314 | /* See target.h. */ |
4315 | ||
4316 | void | |
4317 | target_call_history (int size, int flags) | |
4318 | { | |
4319 | struct target_ops *t; | |
4320 | ||
4321 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4322 | if (t->to_call_history != NULL) | |
4323 | { | |
5df2fcba | 4324 | t->to_call_history (t, size, flags); |
15984c13 MM |
4325 | return; |
4326 | } | |
4327 | ||
4328 | tcomplain (); | |
4329 | } | |
4330 | ||
4331 | /* See target.h. */ | |
4332 | ||
4333 | void | |
4334 | target_call_history_from (ULONGEST begin, int size, int flags) | |
4335 | { | |
4336 | struct target_ops *t; | |
4337 | ||
4338 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4339 | if (t->to_call_history_from != NULL) | |
4340 | { | |
ec0aea04 | 4341 | t->to_call_history_from (t, begin, size, flags); |
15984c13 MM |
4342 | return; |
4343 | } | |
4344 | ||
4345 | tcomplain (); | |
4346 | } | |
4347 | ||
4348 | /* See target.h. */ | |
4349 | ||
4350 | void | |
4351 | target_call_history_range (ULONGEST begin, ULONGEST end, int flags) | |
4352 | { | |
4353 | struct target_ops *t; | |
4354 | ||
4355 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4356 | if (t->to_call_history_range != NULL) | |
4357 | { | |
f0d960ea | 4358 | t->to_call_history_range (t, begin, end, flags); |
15984c13 MM |
4359 | return; |
4360 | } | |
4361 | ||
4362 | tcomplain (); | |
4363 | } | |
4364 | ||
c906108c | 4365 | static void |
f32dbf8c | 4366 | debug_to_prepare_to_store (struct target_ops *self, struct regcache *regcache) |
c906108c | 4367 | { |
f32dbf8c | 4368 | debug_target.to_prepare_to_store (&debug_target, regcache); |
c906108c | 4369 | |
96baa820 | 4370 | fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n"); |
c906108c SS |
4371 | } |
4372 | ||
ea001bdc MM |
4373 | /* See target.h. */ |
4374 | ||
4375 | const struct frame_unwind * | |
4376 | target_get_unwinder (void) | |
4377 | { | |
4378 | struct target_ops *t; | |
4379 | ||
4380 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4381 | if (t->to_get_unwinder != NULL) | |
4382 | return t->to_get_unwinder; | |
4383 | ||
4384 | return NULL; | |
4385 | } | |
4386 | ||
4387 | /* See target.h. */ | |
4388 | ||
4389 | const struct frame_unwind * | |
4390 | target_get_tailcall_unwinder (void) | |
4391 | { | |
4392 | struct target_ops *t; | |
4393 | ||
4394 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4395 | if (t->to_get_tailcall_unwinder != NULL) | |
4396 | return t->to_get_tailcall_unwinder; | |
4397 | ||
4398 | return NULL; | |
4399 | } | |
4400 | ||
118e6252 MM |
4401 | /* See target.h. */ |
4402 | ||
4403 | CORE_ADDR | |
4404 | forward_target_decr_pc_after_break (struct target_ops *ops, | |
4405 | struct gdbarch *gdbarch) | |
4406 | { | |
4407 | for (; ops != NULL; ops = ops->beneath) | |
4408 | if (ops->to_decr_pc_after_break != NULL) | |
4409 | return ops->to_decr_pc_after_break (ops, gdbarch); | |
4410 | ||
4411 | return gdbarch_decr_pc_after_break (gdbarch); | |
4412 | } | |
4413 | ||
4414 | /* See target.h. */ | |
4415 | ||
4416 | CORE_ADDR | |
4417 | target_decr_pc_after_break (struct gdbarch *gdbarch) | |
4418 | { | |
4419 | return forward_target_decr_pc_after_break (current_target.beneath, gdbarch); | |
4420 | } | |
4421 | ||
c906108c | 4422 | static int |
961cb7b5 | 4423 | deprecated_debug_xfer_memory (CORE_ADDR memaddr, bfd_byte *myaddr, int len, |
c8e73a31 AC |
4424 | int write, struct mem_attrib *attrib, |
4425 | struct target_ops *target) | |
c906108c SS |
4426 | { |
4427 | int retval; | |
4428 | ||
c8e73a31 AC |
4429 | retval = debug_target.deprecated_xfer_memory (memaddr, myaddr, len, write, |
4430 | attrib, target); | |
c906108c | 4431 | |
96baa820 | 4432 | fprintf_unfiltered (gdb_stdlog, |
53b71562 | 4433 | "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d", |
f5656ead | 4434 | paddress (target_gdbarch (), memaddr), len, |
5af949e3 | 4435 | write ? "write" : "read", retval); |
c906108c | 4436 | |
c906108c SS |
4437 | if (retval > 0) |
4438 | { | |
4439 | int i; | |
4440 | ||
96baa820 | 4441 | fputs_unfiltered (", bytes =", gdb_stdlog); |
c906108c SS |
4442 | for (i = 0; i < retval; i++) |
4443 | { | |
53b71562 | 4444 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
333dabeb DJ |
4445 | { |
4446 | if (targetdebug < 2 && i > 0) | |
4447 | { | |
4448 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
4449 | break; | |
4450 | } | |
4451 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
4452 | } | |
2bc416ba | 4453 | |
96baa820 | 4454 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
c906108c SS |
4455 | } |
4456 | } | |
4457 | ||
96baa820 | 4458 | fputc_unfiltered ('\n', gdb_stdlog); |
c906108c SS |
4459 | |
4460 | return retval; | |
4461 | } | |
4462 | ||
4463 | static void | |
fba45db2 | 4464 | debug_to_files_info (struct target_ops *target) |
c906108c SS |
4465 | { |
4466 | debug_target.to_files_info (target); | |
4467 | ||
96baa820 | 4468 | fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n"); |
c906108c SS |
4469 | } |
4470 | ||
4471 | static int | |
3db08215 | 4472 | debug_to_insert_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, |
a6d9a66e | 4473 | struct bp_target_info *bp_tgt) |
c906108c SS |
4474 | { |
4475 | int retval; | |
4476 | ||
6b84065d | 4477 | retval = debug_target.to_insert_breakpoint (&debug_target, gdbarch, bp_tgt); |
c906108c | 4478 | |
96baa820 | 4479 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
4480 | "target_insert_breakpoint (%s, xxx) = %ld\n", |
4481 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 4482 | (unsigned long) retval); |
c906108c SS |
4483 | return retval; |
4484 | } | |
4485 | ||
4486 | static int | |
3db08215 | 4487 | debug_to_remove_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, |
a6d9a66e | 4488 | struct bp_target_info *bp_tgt) |
c906108c SS |
4489 | { |
4490 | int retval; | |
4491 | ||
6b84065d | 4492 | retval = debug_target.to_remove_breakpoint (&debug_target, gdbarch, bp_tgt); |
c906108c | 4493 | |
96baa820 | 4494 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
4495 | "target_remove_breakpoint (%s, xxx) = %ld\n", |
4496 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 4497 | (unsigned long) retval); |
c906108c SS |
4498 | return retval; |
4499 | } | |
4500 | ||
ccaa32c7 | 4501 | static int |
5461485a TT |
4502 | debug_to_can_use_hw_breakpoint (struct target_ops *self, |
4503 | int type, int cnt, int from_tty) | |
ccaa32c7 GS |
4504 | { |
4505 | int retval; | |
4506 | ||
5461485a TT |
4507 | retval = debug_target.to_can_use_hw_breakpoint (&debug_target, |
4508 | type, cnt, from_tty); | |
ccaa32c7 GS |
4509 | |
4510 | fprintf_unfiltered (gdb_stdlog, | |
4511 | "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n", | |
4512 | (unsigned long) type, | |
4513 | (unsigned long) cnt, | |
4514 | (unsigned long) from_tty, | |
4515 | (unsigned long) retval); | |
4516 | return retval; | |
4517 | } | |
4518 | ||
e0d24f8d | 4519 | static int |
31568a15 TT |
4520 | debug_to_region_ok_for_hw_watchpoint (struct target_ops *self, |
4521 | CORE_ADDR addr, int len) | |
e0d24f8d WZ |
4522 | { |
4523 | CORE_ADDR retval; | |
4524 | ||
31568a15 TT |
4525 | retval = debug_target.to_region_ok_for_hw_watchpoint (&debug_target, |
4526 | addr, len); | |
e0d24f8d WZ |
4527 | |
4528 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4529 | "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n", |
4530 | core_addr_to_string (addr), (unsigned long) len, | |
4531 | core_addr_to_string (retval)); | |
e0d24f8d WZ |
4532 | return retval; |
4533 | } | |
4534 | ||
0cf6dd15 | 4535 | static int |
c3a5ff89 TT |
4536 | debug_to_can_accel_watchpoint_condition (struct target_ops *self, |
4537 | CORE_ADDR addr, int len, int rw, | |
0cf6dd15 TJB |
4538 | struct expression *cond) |
4539 | { | |
4540 | int retval; | |
4541 | ||
c3a5ff89 TT |
4542 | retval = debug_target.to_can_accel_watchpoint_condition (&debug_target, |
4543 | addr, len, | |
3e43a32a | 4544 | rw, cond); |
0cf6dd15 TJB |
4545 | |
4546 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
4547 | "target_can_accel_watchpoint_condition " |
4548 | "(%s, %d, %d, %s) = %ld\n", | |
bd91e7ae OS |
4549 | core_addr_to_string (addr), len, rw, |
4550 | host_address_to_string (cond), (unsigned long) retval); | |
0cf6dd15 TJB |
4551 | return retval; |
4552 | } | |
4553 | ||
ccaa32c7 | 4554 | static int |
6a109b6b | 4555 | debug_to_stopped_by_watchpoint (struct target_ops *ops) |
ccaa32c7 GS |
4556 | { |
4557 | int retval; | |
4558 | ||
6a109b6b | 4559 | retval = debug_target.to_stopped_by_watchpoint (&debug_target); |
ccaa32c7 GS |
4560 | |
4561 | fprintf_unfiltered (gdb_stdlog, | |
d92524f1 | 4562 | "target_stopped_by_watchpoint () = %ld\n", |
ccaa32c7 GS |
4563 | (unsigned long) retval); |
4564 | return retval; | |
4565 | } | |
4566 | ||
4aa7a7f5 JJ |
4567 | static int |
4568 | debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr) | |
ccaa32c7 | 4569 | { |
4aa7a7f5 | 4570 | int retval; |
ccaa32c7 | 4571 | |
4aa7a7f5 | 4572 | retval = debug_target.to_stopped_data_address (target, addr); |
ccaa32c7 GS |
4573 | |
4574 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4575 | "target_stopped_data_address ([%s]) = %ld\n", |
4576 | core_addr_to_string (*addr), | |
4aa7a7f5 | 4577 | (unsigned long)retval); |
ccaa32c7 GS |
4578 | return retval; |
4579 | } | |
4580 | ||
5009afc5 AS |
4581 | static int |
4582 | debug_to_watchpoint_addr_within_range (struct target_ops *target, | |
4583 | CORE_ADDR addr, | |
4584 | CORE_ADDR start, int length) | |
4585 | { | |
4586 | int retval; | |
4587 | ||
4588 | retval = debug_target.to_watchpoint_addr_within_range (target, addr, | |
4589 | start, length); | |
4590 | ||
4591 | fprintf_filtered (gdb_stdlog, | |
bd91e7ae OS |
4592 | "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n", |
4593 | core_addr_to_string (addr), core_addr_to_string (start), | |
4594 | length, retval); | |
5009afc5 AS |
4595 | return retval; |
4596 | } | |
4597 | ||
ccaa32c7 | 4598 | static int |
23a26771 TT |
4599 | debug_to_insert_hw_breakpoint (struct target_ops *self, |
4600 | struct gdbarch *gdbarch, | |
a6d9a66e | 4601 | struct bp_target_info *bp_tgt) |
ccaa32c7 GS |
4602 | { |
4603 | int retval; | |
4604 | ||
23a26771 TT |
4605 | retval = debug_target.to_insert_hw_breakpoint (&debug_target, |
4606 | gdbarch, bp_tgt); | |
ccaa32c7 GS |
4607 | |
4608 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4609 | "target_insert_hw_breakpoint (%s, xxx) = %ld\n", |
4610 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
4611 | (unsigned long) retval); |
4612 | return retval; | |
4613 | } | |
4614 | ||
4615 | static int | |
a64dc96c TT |
4616 | debug_to_remove_hw_breakpoint (struct target_ops *self, |
4617 | struct gdbarch *gdbarch, | |
a6d9a66e | 4618 | struct bp_target_info *bp_tgt) |
ccaa32c7 GS |
4619 | { |
4620 | int retval; | |
4621 | ||
a64dc96c TT |
4622 | retval = debug_target.to_remove_hw_breakpoint (&debug_target, |
4623 | gdbarch, bp_tgt); | |
ccaa32c7 GS |
4624 | |
4625 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4626 | "target_remove_hw_breakpoint (%s, xxx) = %ld\n", |
4627 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
4628 | (unsigned long) retval); |
4629 | return retval; | |
4630 | } | |
4631 | ||
4632 | static int | |
7bb99c53 TT |
4633 | debug_to_insert_watchpoint (struct target_ops *self, |
4634 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 4635 | struct expression *cond) |
ccaa32c7 GS |
4636 | { |
4637 | int retval; | |
4638 | ||
7bb99c53 TT |
4639 | retval = debug_target.to_insert_watchpoint (&debug_target, |
4640 | addr, len, type, cond); | |
ccaa32c7 GS |
4641 | |
4642 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4643 | "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n", |
4644 | core_addr_to_string (addr), len, type, | |
4645 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
4646 | return retval; |
4647 | } | |
4648 | ||
4649 | static int | |
11b5219a TT |
4650 | debug_to_remove_watchpoint (struct target_ops *self, |
4651 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 4652 | struct expression *cond) |
ccaa32c7 GS |
4653 | { |
4654 | int retval; | |
4655 | ||
11b5219a TT |
4656 | retval = debug_target.to_remove_watchpoint (&debug_target, |
4657 | addr, len, type, cond); | |
ccaa32c7 GS |
4658 | |
4659 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4660 | "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n", |
4661 | core_addr_to_string (addr), len, type, | |
4662 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
4663 | return retval; |
4664 | } | |
4665 | ||
c906108c | 4666 | static void |
c42bf286 | 4667 | debug_to_terminal_init (struct target_ops *self) |
c906108c | 4668 | { |
c42bf286 | 4669 | debug_target.to_terminal_init (&debug_target); |
c906108c | 4670 | |
96baa820 | 4671 | fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n"); |
c906108c SS |
4672 | } |
4673 | ||
4674 | static void | |
d2f640d4 | 4675 | debug_to_terminal_inferior (struct target_ops *self) |
c906108c | 4676 | { |
d2f640d4 | 4677 | debug_target.to_terminal_inferior (&debug_target); |
c906108c | 4678 | |
96baa820 | 4679 | fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n"); |
c906108c SS |
4680 | } |
4681 | ||
4682 | static void | |
2e1e1a19 | 4683 | debug_to_terminal_ours_for_output (struct target_ops *self) |
c906108c | 4684 | { |
2e1e1a19 | 4685 | debug_target.to_terminal_ours_for_output (&debug_target); |
c906108c | 4686 | |
96baa820 | 4687 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n"); |
c906108c SS |
4688 | } |
4689 | ||
4690 | static void | |
e3594fd1 | 4691 | debug_to_terminal_ours (struct target_ops *self) |
c906108c | 4692 | { |
e3594fd1 | 4693 | debug_target.to_terminal_ours (&debug_target); |
c906108c | 4694 | |
96baa820 | 4695 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n"); |
c906108c SS |
4696 | } |
4697 | ||
a790ad35 | 4698 | static void |
ae3bd431 | 4699 | debug_to_terminal_save_ours (struct target_ops *self) |
a790ad35 | 4700 | { |
ae3bd431 | 4701 | debug_target.to_terminal_save_ours (&debug_target); |
a790ad35 SC |
4702 | |
4703 | fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n"); | |
4704 | } | |
4705 | ||
c906108c | 4706 | static void |
0a4f40a2 TT |
4707 | debug_to_terminal_info (struct target_ops *self, |
4708 | const char *arg, int from_tty) | |
c906108c | 4709 | { |
0a4f40a2 | 4710 | debug_target.to_terminal_info (&debug_target, arg, from_tty); |
c906108c | 4711 | |
96baa820 | 4712 | fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg, |
c906108c SS |
4713 | from_tty); |
4714 | } | |
4715 | ||
c906108c | 4716 | static void |
71a9f134 | 4717 | debug_to_load (struct target_ops *self, char *args, int from_tty) |
c906108c | 4718 | { |
71a9f134 | 4719 | debug_target.to_load (&debug_target, args, from_tty); |
c906108c | 4720 | |
96baa820 | 4721 | fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty); |
c906108c SS |
4722 | } |
4723 | ||
c906108c | 4724 | static void |
2e97a79e | 4725 | debug_to_post_startup_inferior (struct target_ops *self, ptid_t ptid) |
c906108c | 4726 | { |
2e97a79e | 4727 | debug_target.to_post_startup_inferior (&debug_target, ptid); |
c906108c | 4728 | |
96baa820 | 4729 | fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n", |
dfd4cc63 | 4730 | ptid_get_pid (ptid)); |
c906108c SS |
4731 | } |
4732 | ||
77b06cd7 | 4733 | static int |
a863b201 | 4734 | debug_to_insert_fork_catchpoint (struct target_ops *self, int pid) |
c906108c | 4735 | { |
77b06cd7 TJB |
4736 | int retval; |
4737 | ||
a863b201 | 4738 | retval = debug_target.to_insert_fork_catchpoint (&debug_target, pid); |
77b06cd7 TJB |
4739 | |
4740 | fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d) = %d\n", | |
4741 | pid, retval); | |
c906108c | 4742 | |
77b06cd7 | 4743 | return retval; |
c906108c SS |
4744 | } |
4745 | ||
4746 | static int | |
973fc227 | 4747 | debug_to_remove_fork_catchpoint (struct target_ops *self, int pid) |
c906108c | 4748 | { |
c5aa993b | 4749 | int retval; |
c906108c | 4750 | |
973fc227 | 4751 | retval = debug_target.to_remove_fork_catchpoint (&debug_target, pid); |
c906108c | 4752 | |
96baa820 | 4753 | fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n", |
c5aa993b | 4754 | pid, retval); |
c906108c SS |
4755 | |
4756 | return retval; | |
4757 | } | |
4758 | ||
77b06cd7 | 4759 | static int |
3ecc7da0 | 4760 | debug_to_insert_vfork_catchpoint (struct target_ops *self, int pid) |
c906108c | 4761 | { |
77b06cd7 TJB |
4762 | int retval; |
4763 | ||
3ecc7da0 | 4764 | retval = debug_target.to_insert_vfork_catchpoint (&debug_target, pid); |
c906108c | 4765 | |
77b06cd7 TJB |
4766 | fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d) = %d\n", |
4767 | pid, retval); | |
4768 | ||
4769 | return retval; | |
c906108c SS |
4770 | } |
4771 | ||
4772 | static int | |
e98cf0cd | 4773 | debug_to_remove_vfork_catchpoint (struct target_ops *self, int pid) |
c906108c | 4774 | { |
c5aa993b | 4775 | int retval; |
c906108c | 4776 | |
e98cf0cd | 4777 | retval = debug_target.to_remove_vfork_catchpoint (&debug_target, pid); |
c906108c | 4778 | |
96baa820 | 4779 | fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n", |
c5aa993b | 4780 | pid, retval); |
c906108c SS |
4781 | |
4782 | return retval; | |
4783 | } | |
4784 | ||
77b06cd7 | 4785 | static int |
ba025e51 | 4786 | debug_to_insert_exec_catchpoint (struct target_ops *self, int pid) |
c906108c | 4787 | { |
77b06cd7 TJB |
4788 | int retval; |
4789 | ||
ba025e51 | 4790 | retval = debug_target.to_insert_exec_catchpoint (&debug_target, pid); |
c906108c | 4791 | |
77b06cd7 TJB |
4792 | fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d) = %d\n", |
4793 | pid, retval); | |
4794 | ||
4795 | return retval; | |
c906108c SS |
4796 | } |
4797 | ||
4798 | static int | |
758e29d2 | 4799 | debug_to_remove_exec_catchpoint (struct target_ops *self, int pid) |
c906108c | 4800 | { |
c5aa993b | 4801 | int retval; |
c906108c | 4802 | |
758e29d2 | 4803 | retval = debug_target.to_remove_exec_catchpoint (&debug_target, pid); |
c906108c | 4804 | |
96baa820 | 4805 | fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n", |
c5aa993b | 4806 | pid, retval); |
c906108c SS |
4807 | |
4808 | return retval; | |
4809 | } | |
4810 | ||
c906108c | 4811 | static int |
d796e1d6 TT |
4812 | debug_to_has_exited (struct target_ops *self, |
4813 | int pid, int wait_status, int *exit_status) | |
c906108c | 4814 | { |
c5aa993b | 4815 | int has_exited; |
c906108c | 4816 | |
d796e1d6 TT |
4817 | has_exited = debug_target.to_has_exited (&debug_target, |
4818 | pid, wait_status, exit_status); | |
c906108c | 4819 | |
96baa820 | 4820 | fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n", |
c5aa993b | 4821 | pid, wait_status, *exit_status, has_exited); |
c906108c SS |
4822 | |
4823 | return has_exited; | |
4824 | } | |
4825 | ||
c906108c | 4826 | static int |
da82bd6b | 4827 | debug_to_can_run (struct target_ops *self) |
c906108c SS |
4828 | { |
4829 | int retval; | |
4830 | ||
da82bd6b | 4831 | retval = debug_target.to_can_run (&debug_target); |
c906108c | 4832 | |
96baa820 | 4833 | fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval); |
c906108c SS |
4834 | |
4835 | return retval; | |
4836 | } | |
4837 | ||
c2250ad1 UW |
4838 | static struct gdbarch * |
4839 | debug_to_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
4840 | { | |
4841 | struct gdbarch *retval; | |
4842 | ||
4843 | retval = debug_target.to_thread_architecture (ops, ptid); | |
4844 | ||
3e43a32a MS |
4845 | fprintf_unfiltered (gdb_stdlog, |
4846 | "target_thread_architecture (%s) = %s [%s]\n", | |
4847 | target_pid_to_str (ptid), | |
4848 | host_address_to_string (retval), | |
c2250ad1 UW |
4849 | gdbarch_bfd_arch_info (retval)->printable_name); |
4850 | return retval; | |
4851 | } | |
4852 | ||
c906108c | 4853 | static void |
1eab8a48 | 4854 | debug_to_stop (struct target_ops *self, ptid_t ptid) |
c906108c | 4855 | { |
1eab8a48 | 4856 | debug_target.to_stop (&debug_target, ptid); |
c906108c | 4857 | |
94cc34af PA |
4858 | fprintf_unfiltered (gdb_stdlog, "target_stop (%s)\n", |
4859 | target_pid_to_str (ptid)); | |
c906108c SS |
4860 | } |
4861 | ||
96baa820 | 4862 | static void |
1aac633b | 4863 | debug_to_rcmd (struct target_ops *self, char *command, |
d9fcf2fb | 4864 | struct ui_file *outbuf) |
96baa820 | 4865 | { |
1aac633b | 4866 | debug_target.to_rcmd (&debug_target, command, outbuf); |
96baa820 JM |
4867 | fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command); |
4868 | } | |
4869 | ||
c906108c | 4870 | static char * |
8dd27370 | 4871 | debug_to_pid_to_exec_file (struct target_ops *self, int pid) |
c906108c | 4872 | { |
c5aa993b | 4873 | char *exec_file; |
c906108c | 4874 | |
8dd27370 | 4875 | exec_file = debug_target.to_pid_to_exec_file (&debug_target, pid); |
c906108c | 4876 | |
96baa820 | 4877 | fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n", |
c5aa993b | 4878 | pid, exec_file); |
c906108c SS |
4879 | |
4880 | return exec_file; | |
4881 | } | |
4882 | ||
c906108c | 4883 | static void |
fba45db2 | 4884 | setup_target_debug (void) |
c906108c SS |
4885 | { |
4886 | memcpy (&debug_target, ¤t_target, sizeof debug_target); | |
4887 | ||
4888 | current_target.to_open = debug_to_open; | |
c906108c | 4889 | current_target.to_post_attach = debug_to_post_attach; |
c906108c | 4890 | current_target.to_prepare_to_store = debug_to_prepare_to_store; |
c8e73a31 | 4891 | current_target.deprecated_xfer_memory = deprecated_debug_xfer_memory; |
c906108c SS |
4892 | current_target.to_files_info = debug_to_files_info; |
4893 | current_target.to_insert_breakpoint = debug_to_insert_breakpoint; | |
4894 | current_target.to_remove_breakpoint = debug_to_remove_breakpoint; | |
ccaa32c7 GS |
4895 | current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint; |
4896 | current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint; | |
4897 | current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint; | |
4898 | current_target.to_insert_watchpoint = debug_to_insert_watchpoint; | |
4899 | current_target.to_remove_watchpoint = debug_to_remove_watchpoint; | |
4900 | current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint; | |
4901 | current_target.to_stopped_data_address = debug_to_stopped_data_address; | |
3e43a32a MS |
4902 | current_target.to_watchpoint_addr_within_range |
4903 | = debug_to_watchpoint_addr_within_range; | |
4904 | current_target.to_region_ok_for_hw_watchpoint | |
4905 | = debug_to_region_ok_for_hw_watchpoint; | |
4906 | current_target.to_can_accel_watchpoint_condition | |
4907 | = debug_to_can_accel_watchpoint_condition; | |
c906108c SS |
4908 | current_target.to_terminal_init = debug_to_terminal_init; |
4909 | current_target.to_terminal_inferior = debug_to_terminal_inferior; | |
3e43a32a MS |
4910 | current_target.to_terminal_ours_for_output |
4911 | = debug_to_terminal_ours_for_output; | |
c906108c | 4912 | current_target.to_terminal_ours = debug_to_terminal_ours; |
a790ad35 | 4913 | current_target.to_terminal_save_ours = debug_to_terminal_save_ours; |
c906108c | 4914 | current_target.to_terminal_info = debug_to_terminal_info; |
c906108c | 4915 | current_target.to_load = debug_to_load; |
c906108c | 4916 | current_target.to_post_startup_inferior = debug_to_post_startup_inferior; |
c906108c SS |
4917 | current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint; |
4918 | current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint; | |
4919 | current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint; | |
4920 | current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint; | |
c906108c SS |
4921 | current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint; |
4922 | current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint; | |
c906108c | 4923 | current_target.to_has_exited = debug_to_has_exited; |
c906108c | 4924 | current_target.to_can_run = debug_to_can_run; |
c906108c | 4925 | current_target.to_stop = debug_to_stop; |
96baa820 | 4926 | current_target.to_rcmd = debug_to_rcmd; |
c906108c | 4927 | current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file; |
c2250ad1 | 4928 | current_target.to_thread_architecture = debug_to_thread_architecture; |
c906108c | 4929 | } |
c906108c | 4930 | \f |
c5aa993b JM |
4931 | |
4932 | static char targ_desc[] = | |
3e43a32a MS |
4933 | "Names of targets and files being debugged.\nShows the entire \ |
4934 | stack of targets currently in use (including the exec-file,\n\ | |
c906108c SS |
4935 | core-file, and process, if any), as well as the symbol file name."; |
4936 | ||
a53f3625 TT |
4937 | static void |
4938 | default_rcmd (struct target_ops *self, char *command, struct ui_file *output) | |
4939 | { | |
4940 | error (_("\"monitor\" command not supported by this target.")); | |
4941 | } | |
4942 | ||
96baa820 JM |
4943 | static void |
4944 | do_monitor_command (char *cmd, | |
4945 | int from_tty) | |
4946 | { | |
96baa820 JM |
4947 | target_rcmd (cmd, gdb_stdtarg); |
4948 | } | |
4949 | ||
87680a14 JB |
4950 | /* Print the name of each layers of our target stack. */ |
4951 | ||
4952 | static void | |
4953 | maintenance_print_target_stack (char *cmd, int from_tty) | |
4954 | { | |
4955 | struct target_ops *t; | |
4956 | ||
4957 | printf_filtered (_("The current target stack is:\n")); | |
4958 | ||
4959 | for (t = target_stack; t != NULL; t = t->beneath) | |
4960 | { | |
4961 | printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname); | |
4962 | } | |
4963 | } | |
4964 | ||
c6ebd6cf VP |
4965 | /* Controls if async mode is permitted. */ |
4966 | int target_async_permitted = 0; | |
4967 | ||
4968 | /* The set command writes to this variable. If the inferior is | |
b5419e49 | 4969 | executing, target_async_permitted is *not* updated. */ |
c6ebd6cf VP |
4970 | static int target_async_permitted_1 = 0; |
4971 | ||
4972 | static void | |
9401a810 PA |
4973 | set_target_async_command (char *args, int from_tty, |
4974 | struct cmd_list_element *c) | |
c6ebd6cf | 4975 | { |
c35b1492 | 4976 | if (have_live_inferiors ()) |
c6ebd6cf VP |
4977 | { |
4978 | target_async_permitted_1 = target_async_permitted; | |
4979 | error (_("Cannot change this setting while the inferior is running.")); | |
4980 | } | |
4981 | ||
4982 | target_async_permitted = target_async_permitted_1; | |
4983 | } | |
4984 | ||
4985 | static void | |
9401a810 PA |
4986 | show_target_async_command (struct ui_file *file, int from_tty, |
4987 | struct cmd_list_element *c, | |
4988 | const char *value) | |
c6ebd6cf | 4989 | { |
3e43a32a MS |
4990 | fprintf_filtered (file, |
4991 | _("Controlling the inferior in " | |
4992 | "asynchronous mode is %s.\n"), value); | |
c6ebd6cf VP |
4993 | } |
4994 | ||
d914c394 SS |
4995 | /* Temporary copies of permission settings. */ |
4996 | ||
4997 | static int may_write_registers_1 = 1; | |
4998 | static int may_write_memory_1 = 1; | |
4999 | static int may_insert_breakpoints_1 = 1; | |
5000 | static int may_insert_tracepoints_1 = 1; | |
5001 | static int may_insert_fast_tracepoints_1 = 1; | |
5002 | static int may_stop_1 = 1; | |
5003 | ||
5004 | /* Make the user-set values match the real values again. */ | |
5005 | ||
5006 | void | |
5007 | update_target_permissions (void) | |
5008 | { | |
5009 | may_write_registers_1 = may_write_registers; | |
5010 | may_write_memory_1 = may_write_memory; | |
5011 | may_insert_breakpoints_1 = may_insert_breakpoints; | |
5012 | may_insert_tracepoints_1 = may_insert_tracepoints; | |
5013 | may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints; | |
5014 | may_stop_1 = may_stop; | |
5015 | } | |
5016 | ||
5017 | /* The one function handles (most of) the permission flags in the same | |
5018 | way. */ | |
5019 | ||
5020 | static void | |
5021 | set_target_permissions (char *args, int from_tty, | |
5022 | struct cmd_list_element *c) | |
5023 | { | |
5024 | if (target_has_execution) | |
5025 | { | |
5026 | update_target_permissions (); | |
5027 | error (_("Cannot change this setting while the inferior is running.")); | |
5028 | } | |
5029 | ||
5030 | /* Make the real values match the user-changed values. */ | |
5031 | may_write_registers = may_write_registers_1; | |
5032 | may_insert_breakpoints = may_insert_breakpoints_1; | |
5033 | may_insert_tracepoints = may_insert_tracepoints_1; | |
5034 | may_insert_fast_tracepoints = may_insert_fast_tracepoints_1; | |
5035 | may_stop = may_stop_1; | |
5036 | update_observer_mode (); | |
5037 | } | |
5038 | ||
5039 | /* Set memory write permission independently of observer mode. */ | |
5040 | ||
5041 | static void | |
5042 | set_write_memory_permission (char *args, int from_tty, | |
5043 | struct cmd_list_element *c) | |
5044 | { | |
5045 | /* Make the real values match the user-changed values. */ | |
5046 | may_write_memory = may_write_memory_1; | |
5047 | update_observer_mode (); | |
5048 | } | |
5049 | ||
5050 | ||
c906108c | 5051 | void |
fba45db2 | 5052 | initialize_targets (void) |
c906108c SS |
5053 | { |
5054 | init_dummy_target (); | |
5055 | push_target (&dummy_target); | |
5056 | ||
5057 | add_info ("target", target_info, targ_desc); | |
5058 | add_info ("files", target_info, targ_desc); | |
5059 | ||
ccce17b0 | 5060 | add_setshow_zuinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
85c07804 AC |
5061 | Set target debugging."), _("\ |
5062 | Show target debugging."), _("\ | |
333dabeb DJ |
5063 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
5064 | verbose. Changes do not take effect until the next \"run\" or \"target\"\n\ | |
85c07804 | 5065 | command."), |
ccce17b0 YQ |
5066 | NULL, |
5067 | show_targetdebug, | |
5068 | &setdebuglist, &showdebuglist); | |
3a11626d | 5069 | |
2bc416ba | 5070 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
5071 | &trust_readonly, _("\ |
5072 | Set mode for reading from readonly sections."), _("\ | |
5073 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
5074 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
5075 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 5076 | result in significant performance improvement for remote targets."), |
2c5b56ce | 5077 | NULL, |
920d2a44 | 5078 | show_trust_readonly, |
e707bbc2 | 5079 | &setlist, &showlist); |
96baa820 JM |
5080 | |
5081 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 5082 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 5083 | |
87680a14 JB |
5084 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
5085 | _("Print the name of each layer of the internal target stack."), | |
5086 | &maintenanceprintlist); | |
5087 | ||
c6ebd6cf VP |
5088 | add_setshow_boolean_cmd ("target-async", no_class, |
5089 | &target_async_permitted_1, _("\ | |
5090 | Set whether gdb controls the inferior in asynchronous mode."), _("\ | |
5091 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
5092 | Tells gdb whether to control the inferior in asynchronous mode."), | |
9401a810 PA |
5093 | set_target_async_command, |
5094 | show_target_async_command, | |
c6ebd6cf VP |
5095 | &setlist, |
5096 | &showlist); | |
5097 | ||
d914c394 SS |
5098 | add_setshow_boolean_cmd ("may-write-registers", class_support, |
5099 | &may_write_registers_1, _("\ | |
5100 | Set permission to write into registers."), _("\ | |
5101 | Show permission to write into registers."), _("\ | |
5102 | When this permission is on, GDB may write into the target's registers.\n\ | |
5103 | Otherwise, any sort of write attempt will result in an error."), | |
5104 | set_target_permissions, NULL, | |
5105 | &setlist, &showlist); | |
5106 | ||
5107 | add_setshow_boolean_cmd ("may-write-memory", class_support, | |
5108 | &may_write_memory_1, _("\ | |
5109 | Set permission to write into target memory."), _("\ | |
5110 | Show permission to write into target memory."), _("\ | |
5111 | When this permission is on, GDB may write into the target's memory.\n\ | |
5112 | Otherwise, any sort of write attempt will result in an error."), | |
5113 | set_write_memory_permission, NULL, | |
5114 | &setlist, &showlist); | |
5115 | ||
5116 | add_setshow_boolean_cmd ("may-insert-breakpoints", class_support, | |
5117 | &may_insert_breakpoints_1, _("\ | |
5118 | Set permission to insert breakpoints in the target."), _("\ | |
5119 | Show permission to insert breakpoints in the target."), _("\ | |
5120 | When this permission is on, GDB may insert breakpoints in the program.\n\ | |
5121 | Otherwise, any sort of insertion attempt will result in an error."), | |
5122 | set_target_permissions, NULL, | |
5123 | &setlist, &showlist); | |
5124 | ||
5125 | add_setshow_boolean_cmd ("may-insert-tracepoints", class_support, | |
5126 | &may_insert_tracepoints_1, _("\ | |
5127 | Set permission to insert tracepoints in the target."), _("\ | |
5128 | Show permission to insert tracepoints in the target."), _("\ | |
5129 | When this permission is on, GDB may insert tracepoints in the program.\n\ | |
5130 | Otherwise, any sort of insertion attempt will result in an error."), | |
5131 | set_target_permissions, NULL, | |
5132 | &setlist, &showlist); | |
5133 | ||
5134 | add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support, | |
5135 | &may_insert_fast_tracepoints_1, _("\ | |
5136 | Set permission to insert fast tracepoints in the target."), _("\ | |
5137 | Show permission to insert fast tracepoints in the target."), _("\ | |
5138 | When this permission is on, GDB may insert fast tracepoints.\n\ | |
5139 | Otherwise, any sort of insertion attempt will result in an error."), | |
5140 | set_target_permissions, NULL, | |
5141 | &setlist, &showlist); | |
5142 | ||
5143 | add_setshow_boolean_cmd ("may-interrupt", class_support, | |
5144 | &may_stop_1, _("\ | |
5145 | Set permission to interrupt or signal the target."), _("\ | |
5146 | Show permission to interrupt or signal the target."), _("\ | |
5147 | When this permission is on, GDB may interrupt/stop the target's execution.\n\ | |
5148 | Otherwise, any attempt to interrupt or stop will be ignored."), | |
5149 | set_target_permissions, NULL, | |
5150 | &setlist, &showlist); | |
c906108c | 5151 | } |