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