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" |
8de71aab | 47 | #include "auxv.h" |
c906108c | 48 | |
a14ed312 | 49 | static void target_info (char *, int); |
c906108c | 50 | |
0a4f40a2 | 51 | static void default_terminal_info (struct target_ops *, const char *, int); |
c906108c | 52 | |
5009afc5 AS |
53 | static int default_watchpoint_addr_within_range (struct target_ops *, |
54 | CORE_ADDR, CORE_ADDR, int); | |
55 | ||
31568a15 TT |
56 | static int default_region_ok_for_hw_watchpoint (struct target_ops *, |
57 | CORE_ADDR, int); | |
e0d24f8d | 58 | |
a53f3625 TT |
59 | static void default_rcmd (struct target_ops *, char *, struct ui_file *); |
60 | ||
4229b31d TT |
61 | static ptid_t default_get_ada_task_ptid (struct target_ops *self, |
62 | long lwp, long tid); | |
63 | ||
098dba18 TT |
64 | static int default_follow_fork (struct target_ops *self, int follow_child, |
65 | int detach_fork); | |
66 | ||
8d657035 TT |
67 | static void default_mourn_inferior (struct target_ops *self); |
68 | ||
58a5184e TT |
69 | static int default_search_memory (struct target_ops *ops, |
70 | CORE_ADDR start_addr, | |
71 | ULONGEST search_space_len, | |
72 | const gdb_byte *pattern, | |
73 | ULONGEST pattern_len, | |
74 | CORE_ADDR *found_addrp); | |
75 | ||
c25c4a8b | 76 | static void tcomplain (void) ATTRIBUTE_NORETURN; |
c906108c | 77 | |
555bbdeb TT |
78 | static int return_zero (struct target_ops *); |
79 | ||
80 | static int return_zero_has_execution (struct target_ops *, ptid_t); | |
c906108c | 81 | |
a14ed312 | 82 | static void target_command (char *, int); |
c906108c | 83 | |
a14ed312 | 84 | static struct target_ops *find_default_run_target (char *); |
c906108c | 85 | |
c2250ad1 UW |
86 | static struct gdbarch *default_thread_architecture (struct target_ops *ops, |
87 | ptid_t ptid); | |
88 | ||
0b5a2719 TT |
89 | static int dummy_find_memory_regions (struct target_ops *self, |
90 | find_memory_region_ftype ignore1, | |
91 | void *ignore2); | |
92 | ||
16f796b1 TT |
93 | static char *dummy_make_corefile_notes (struct target_ops *self, |
94 | bfd *ignore1, int *ignore2); | |
95 | ||
770234d3 TT |
96 | static char *default_pid_to_str (struct target_ops *ops, ptid_t ptid); |
97 | ||
fe31bf5b TT |
98 | static enum exec_direction_kind default_execution_direction |
99 | (struct target_ops *self); | |
100 | ||
c0eca49f TT |
101 | static CORE_ADDR default_target_decr_pc_after_break (struct target_ops *ops, |
102 | struct gdbarch *gdbarch); | |
103 | ||
1101cb7b TT |
104 | #include "target-delegates.c" |
105 | ||
a14ed312 | 106 | static void init_dummy_target (void); |
c906108c | 107 | |
aa869812 AC |
108 | static struct target_ops debug_target; |
109 | ||
a14ed312 | 110 | static void debug_to_open (char *, int); |
c906108c | 111 | |
f32dbf8c MM |
112 | static void debug_to_prepare_to_store (struct target_ops *self, |
113 | struct regcache *); | |
c906108c | 114 | |
a14ed312 | 115 | static void debug_to_files_info (struct target_ops *); |
c906108c | 116 | |
3db08215 | 117 | static int debug_to_insert_breakpoint (struct target_ops *, struct gdbarch *, |
a6d9a66e | 118 | struct bp_target_info *); |
c906108c | 119 | |
3db08215 | 120 | static int debug_to_remove_breakpoint (struct target_ops *, struct gdbarch *, |
a6d9a66e | 121 | struct bp_target_info *); |
c906108c | 122 | |
5461485a TT |
123 | static int debug_to_can_use_hw_breakpoint (struct target_ops *self, |
124 | int, int, int); | |
ccaa32c7 | 125 | |
23a26771 TT |
126 | static int debug_to_insert_hw_breakpoint (struct target_ops *self, |
127 | struct gdbarch *, | |
a6d9a66e | 128 | struct bp_target_info *); |
ccaa32c7 | 129 | |
a64dc96c TT |
130 | static int debug_to_remove_hw_breakpoint (struct target_ops *self, |
131 | struct gdbarch *, | |
a6d9a66e | 132 | struct bp_target_info *); |
ccaa32c7 | 133 | |
7bb99c53 TT |
134 | static int debug_to_insert_watchpoint (struct target_ops *self, |
135 | CORE_ADDR, int, int, | |
0cf6dd15 | 136 | struct expression *); |
ccaa32c7 | 137 | |
11b5219a TT |
138 | static int debug_to_remove_watchpoint (struct target_ops *self, |
139 | CORE_ADDR, int, int, | |
0cf6dd15 | 140 | struct expression *); |
ccaa32c7 | 141 | |
4aa7a7f5 | 142 | static int debug_to_stopped_data_address (struct target_ops *, CORE_ADDR *); |
ccaa32c7 | 143 | |
5009afc5 AS |
144 | static int debug_to_watchpoint_addr_within_range (struct target_ops *, |
145 | CORE_ADDR, CORE_ADDR, int); | |
146 | ||
31568a15 TT |
147 | static int debug_to_region_ok_for_hw_watchpoint (struct target_ops *self, |
148 | CORE_ADDR, int); | |
e0d24f8d | 149 | |
c3a5ff89 TT |
150 | static int debug_to_can_accel_watchpoint_condition (struct target_ops *self, |
151 | CORE_ADDR, int, int, | |
0cf6dd15 TJB |
152 | struct expression *); |
153 | ||
c42bf286 | 154 | static void debug_to_terminal_init (struct target_ops *self); |
c906108c | 155 | |
d2f640d4 | 156 | static void debug_to_terminal_inferior (struct target_ops *self); |
c906108c | 157 | |
2e1e1a19 | 158 | static void debug_to_terminal_ours_for_output (struct target_ops *self); |
c906108c | 159 | |
ae3bd431 | 160 | static void debug_to_terminal_save_ours (struct target_ops *self); |
a790ad35 | 161 | |
e3594fd1 | 162 | static void debug_to_terminal_ours (struct target_ops *self); |
c906108c | 163 | |
71a9f134 | 164 | static void debug_to_load (struct target_ops *self, char *, int); |
c906108c | 165 | |
da82bd6b | 166 | static int debug_to_can_run (struct target_ops *self); |
c906108c | 167 | |
1eab8a48 | 168 | static void debug_to_stop (struct target_ops *self, ptid_t); |
c906108c | 169 | |
c906108c | 170 | /* Pointer to array of target architecture structures; the size of the |
2bc416ba | 171 | array; the current index into the array; the allocated size of the |
c906108c SS |
172 | array. */ |
173 | struct target_ops **target_structs; | |
174 | unsigned target_struct_size; | |
c906108c SS |
175 | unsigned target_struct_allocsize; |
176 | #define DEFAULT_ALLOCSIZE 10 | |
177 | ||
178 | /* The initial current target, so that there is always a semi-valid | |
179 | current target. */ | |
180 | ||
181 | static struct target_ops dummy_target; | |
182 | ||
183 | /* Top of target stack. */ | |
184 | ||
258b763a | 185 | static struct target_ops *target_stack; |
c906108c SS |
186 | |
187 | /* The target structure we are currently using to talk to a process | |
188 | or file or whatever "inferior" we have. */ | |
189 | ||
190 | struct target_ops current_target; | |
191 | ||
192 | /* Command list for target. */ | |
193 | ||
194 | static struct cmd_list_element *targetlist = NULL; | |
195 | ||
cf7a04e8 DJ |
196 | /* Nonzero if we should trust readonly sections from the |
197 | executable when reading memory. */ | |
198 | ||
199 | static int trust_readonly = 0; | |
200 | ||
8defab1a DJ |
201 | /* Nonzero if we should show true memory content including |
202 | memory breakpoint inserted by gdb. */ | |
203 | ||
204 | static int show_memory_breakpoints = 0; | |
205 | ||
d914c394 SS |
206 | /* These globals control whether GDB attempts to perform these |
207 | operations; they are useful for targets that need to prevent | |
208 | inadvertant disruption, such as in non-stop mode. */ | |
209 | ||
210 | int may_write_registers = 1; | |
211 | ||
212 | int may_write_memory = 1; | |
213 | ||
214 | int may_insert_breakpoints = 1; | |
215 | ||
216 | int may_insert_tracepoints = 1; | |
217 | ||
218 | int may_insert_fast_tracepoints = 1; | |
219 | ||
220 | int may_stop = 1; | |
221 | ||
c906108c SS |
222 | /* Non-zero if we want to see trace of target level stuff. */ |
223 | ||
ccce17b0 | 224 | static unsigned int targetdebug = 0; |
920d2a44 AC |
225 | static void |
226 | show_targetdebug (struct ui_file *file, int from_tty, | |
227 | struct cmd_list_element *c, const char *value) | |
228 | { | |
229 | fprintf_filtered (file, _("Target debugging is %s.\n"), value); | |
230 | } | |
c906108c | 231 | |
a14ed312 | 232 | static void setup_target_debug (void); |
c906108c | 233 | |
c906108c SS |
234 | /* The user just typed 'target' without the name of a target. */ |
235 | ||
c906108c | 236 | static void |
fba45db2 | 237 | target_command (char *arg, int from_tty) |
c906108c SS |
238 | { |
239 | fputs_filtered ("Argument required (target name). Try `help target'\n", | |
240 | gdb_stdout); | |
241 | } | |
242 | ||
c35b1492 PA |
243 | /* Default target_has_* methods for process_stratum targets. */ |
244 | ||
245 | int | |
246 | default_child_has_all_memory (struct target_ops *ops) | |
247 | { | |
248 | /* If no inferior selected, then we can't read memory here. */ | |
249 | if (ptid_equal (inferior_ptid, null_ptid)) | |
250 | return 0; | |
251 | ||
252 | return 1; | |
253 | } | |
254 | ||
255 | int | |
256 | default_child_has_memory (struct target_ops *ops) | |
257 | { | |
258 | /* If no inferior selected, then we can't read memory here. */ | |
259 | if (ptid_equal (inferior_ptid, null_ptid)) | |
260 | return 0; | |
261 | ||
262 | return 1; | |
263 | } | |
264 | ||
265 | int | |
266 | default_child_has_stack (struct target_ops *ops) | |
267 | { | |
268 | /* If no inferior selected, there's no stack. */ | |
269 | if (ptid_equal (inferior_ptid, null_ptid)) | |
270 | return 0; | |
271 | ||
272 | return 1; | |
273 | } | |
274 | ||
275 | int | |
276 | default_child_has_registers (struct target_ops *ops) | |
277 | { | |
278 | /* Can't read registers from no inferior. */ | |
279 | if (ptid_equal (inferior_ptid, null_ptid)) | |
280 | return 0; | |
281 | ||
282 | return 1; | |
283 | } | |
284 | ||
285 | int | |
aeaec162 | 286 | default_child_has_execution (struct target_ops *ops, ptid_t the_ptid) |
c35b1492 PA |
287 | { |
288 | /* If there's no thread selected, then we can't make it run through | |
289 | hoops. */ | |
aeaec162 | 290 | if (ptid_equal (the_ptid, null_ptid)) |
c35b1492 PA |
291 | return 0; |
292 | ||
293 | return 1; | |
294 | } | |
295 | ||
296 | ||
297 | int | |
298 | target_has_all_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_all_memory (t)) | |
304 | return 1; | |
305 | ||
306 | return 0; | |
307 | } | |
308 | ||
309 | int | |
310 | target_has_memory_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_memory (t)) | |
316 | return 1; | |
317 | ||
318 | return 0; | |
319 | } | |
320 | ||
321 | int | |
322 | target_has_stack_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_stack (t)) | |
328 | return 1; | |
329 | ||
330 | return 0; | |
331 | } | |
332 | ||
333 | int | |
334 | target_has_registers_1 (void) | |
335 | { | |
336 | struct target_ops *t; | |
337 | ||
338 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
339 | if (t->to_has_registers (t)) | |
340 | return 1; | |
341 | ||
342 | return 0; | |
343 | } | |
344 | ||
345 | int | |
aeaec162 | 346 | target_has_execution_1 (ptid_t the_ptid) |
c35b1492 PA |
347 | { |
348 | struct target_ops *t; | |
349 | ||
350 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
aeaec162 | 351 | if (t->to_has_execution (t, the_ptid)) |
c35b1492 PA |
352 | return 1; |
353 | ||
354 | return 0; | |
355 | } | |
356 | ||
aeaec162 TT |
357 | int |
358 | target_has_execution_current (void) | |
359 | { | |
360 | return target_has_execution_1 (inferior_ptid); | |
361 | } | |
362 | ||
c22a2b88 TT |
363 | /* Complete initialization of T. This ensures that various fields in |
364 | T are set, if needed by the target implementation. */ | |
c906108c SS |
365 | |
366 | void | |
c22a2b88 | 367 | complete_target_initialization (struct target_ops *t) |
c906108c | 368 | { |
0088c768 | 369 | /* Provide default values for all "must have" methods. */ |
0088c768 | 370 | |
c35b1492 | 371 | if (t->to_has_all_memory == NULL) |
555bbdeb | 372 | t->to_has_all_memory = return_zero; |
c35b1492 PA |
373 | |
374 | if (t->to_has_memory == NULL) | |
555bbdeb | 375 | t->to_has_memory = return_zero; |
c35b1492 PA |
376 | |
377 | if (t->to_has_stack == NULL) | |
555bbdeb | 378 | t->to_has_stack = return_zero; |
c35b1492 PA |
379 | |
380 | if (t->to_has_registers == NULL) | |
555bbdeb | 381 | t->to_has_registers = return_zero; |
c35b1492 PA |
382 | |
383 | if (t->to_has_execution == NULL) | |
555bbdeb | 384 | t->to_has_execution = return_zero_has_execution; |
1101cb7b | 385 | |
b3ccfe11 TT |
386 | /* These methods can be called on an unpushed target and so require |
387 | a default implementation if the target might plausibly be the | |
388 | default run target. */ | |
389 | gdb_assert (t->to_can_run == NULL || (t->to_can_async_p != NULL | |
390 | && t->to_supports_non_stop != NULL)); | |
391 | ||
1101cb7b | 392 | install_delegators (t); |
c22a2b88 TT |
393 | } |
394 | ||
395 | /* Add possible target architecture T to the list and add a new | |
396 | command 'target T->to_shortname'. Set COMPLETER as the command's | |
397 | completer if not NULL. */ | |
398 | ||
399 | void | |
400 | add_target_with_completer (struct target_ops *t, | |
401 | completer_ftype *completer) | |
402 | { | |
403 | struct cmd_list_element *c; | |
404 | ||
405 | complete_target_initialization (t); | |
c35b1492 | 406 | |
c906108c SS |
407 | if (!target_structs) |
408 | { | |
409 | target_struct_allocsize = DEFAULT_ALLOCSIZE; | |
410 | target_structs = (struct target_ops **) xmalloc | |
411 | (target_struct_allocsize * sizeof (*target_structs)); | |
412 | } | |
413 | if (target_struct_size >= target_struct_allocsize) | |
414 | { | |
415 | target_struct_allocsize *= 2; | |
416 | target_structs = (struct target_ops **) | |
c5aa993b JM |
417 | xrealloc ((char *) target_structs, |
418 | target_struct_allocsize * sizeof (*target_structs)); | |
c906108c SS |
419 | } |
420 | target_structs[target_struct_size++] = t; | |
c906108c SS |
421 | |
422 | if (targetlist == NULL) | |
1bedd215 AC |
423 | add_prefix_cmd ("target", class_run, target_command, _("\ |
424 | Connect to a target machine or process.\n\ | |
c906108c SS |
425 | The first argument is the type or protocol of the target machine.\n\ |
426 | Remaining arguments are interpreted by the target protocol. For more\n\ | |
427 | information on the arguments for a particular protocol, type\n\ | |
1bedd215 | 428 | `help target ' followed by the protocol name."), |
c906108c | 429 | &targetlist, "target ", 0, &cmdlist); |
9852c492 YQ |
430 | c = add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc, |
431 | &targetlist); | |
432 | if (completer != NULL) | |
433 | set_cmd_completer (c, completer); | |
434 | } | |
435 | ||
436 | /* Add a possible target architecture to the list. */ | |
437 | ||
438 | void | |
439 | add_target (struct target_ops *t) | |
440 | { | |
441 | add_target_with_completer (t, NULL); | |
c906108c SS |
442 | } |
443 | ||
b48d48eb MM |
444 | /* See target.h. */ |
445 | ||
446 | void | |
447 | add_deprecated_target_alias (struct target_ops *t, char *alias) | |
448 | { | |
449 | struct cmd_list_element *c; | |
450 | char *alt; | |
451 | ||
452 | /* If we use add_alias_cmd, here, we do not get the deprecated warning, | |
453 | see PR cli/15104. */ | |
454 | c = add_cmd (alias, no_class, t->to_open, t->to_doc, &targetlist); | |
455 | alt = xstrprintf ("target %s", t->to_shortname); | |
456 | deprecate_cmd (c, alt); | |
457 | } | |
458 | ||
c906108c SS |
459 | /* Stub functions */ |
460 | ||
7d85a9c0 JB |
461 | void |
462 | target_kill (void) | |
463 | { | |
423a4807 TT |
464 | if (targetdebug) |
465 | fprintf_unfiltered (gdb_stdlog, "target_kill ()\n"); | |
7d85a9c0 | 466 | |
423a4807 | 467 | current_target.to_kill (¤t_target); |
7d85a9c0 JB |
468 | } |
469 | ||
11cf8741 JM |
470 | void |
471 | target_load (char *arg, int from_tty) | |
472 | { | |
4e5d721f | 473 | target_dcache_invalidate (); |
71a9f134 | 474 | (*current_target.to_load) (¤t_target, arg, from_tty); |
11cf8741 JM |
475 | } |
476 | ||
d9d2d8b6 PA |
477 | void |
478 | target_terminal_inferior (void) | |
479 | { | |
480 | /* A background resume (``run&'') should leave GDB in control of the | |
c378eb4e | 481 | terminal. Use target_can_async_p, not target_is_async_p, since at |
ba7f6c64 VP |
482 | this point the target is not async yet. However, if sync_execution |
483 | is not set, we know it will become async prior to resume. */ | |
484 | if (target_can_async_p () && !sync_execution) | |
d9d2d8b6 PA |
485 | return; |
486 | ||
487 | /* If GDB is resuming the inferior in the foreground, install | |
488 | inferior's terminal modes. */ | |
d2f640d4 | 489 | (*current_target.to_terminal_inferior) (¤t_target); |
d9d2d8b6 | 490 | } |
136d6dae | 491 | |
c906108c | 492 | static void |
fba45db2 | 493 | tcomplain (void) |
c906108c | 494 | { |
8a3fe4f8 | 495 | error (_("You can't do that when your target is `%s'"), |
c906108c SS |
496 | current_target.to_shortname); |
497 | } | |
498 | ||
499 | void | |
fba45db2 | 500 | noprocess (void) |
c906108c | 501 | { |
8a3fe4f8 | 502 | error (_("You can't do that without a process to debug.")); |
c906108c SS |
503 | } |
504 | ||
c906108c | 505 | static void |
0a4f40a2 | 506 | default_terminal_info (struct target_ops *self, const char *args, int from_tty) |
c906108c | 507 | { |
a3f17187 | 508 | printf_unfiltered (_("No saved terminal information.\n")); |
c906108c SS |
509 | } |
510 | ||
0ef643c8 JB |
511 | /* A default implementation for the to_get_ada_task_ptid target method. |
512 | ||
513 | This function builds the PTID by using both LWP and TID as part of | |
514 | the PTID lwp and tid elements. The pid used is the pid of the | |
515 | inferior_ptid. */ | |
516 | ||
2c0b251b | 517 | static ptid_t |
1e6b91a4 | 518 | default_get_ada_task_ptid (struct target_ops *self, long lwp, long tid) |
0ef643c8 JB |
519 | { |
520 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid); | |
521 | } | |
522 | ||
32231432 | 523 | static enum exec_direction_kind |
4c612759 | 524 | default_execution_direction (struct target_ops *self) |
32231432 PA |
525 | { |
526 | if (!target_can_execute_reverse) | |
527 | return EXEC_FORWARD; | |
528 | else if (!target_can_async_p ()) | |
529 | return EXEC_FORWARD; | |
530 | else | |
531 | gdb_assert_not_reached ("\ | |
532 | to_execution_direction must be implemented for reverse async"); | |
533 | } | |
534 | ||
7998dfc3 AC |
535 | /* Go through the target stack from top to bottom, copying over zero |
536 | entries in current_target, then filling in still empty entries. In | |
537 | effect, we are doing class inheritance through the pushed target | |
538 | vectors. | |
539 | ||
540 | NOTE: cagney/2003-10-17: The problem with this inheritance, as it | |
541 | is currently implemented, is that it discards any knowledge of | |
542 | which target an inherited method originally belonged to. | |
543 | Consequently, new new target methods should instead explicitly and | |
544 | locally search the target stack for the target that can handle the | |
545 | request. */ | |
c906108c SS |
546 | |
547 | static void | |
7998dfc3 | 548 | update_current_target (void) |
c906108c | 549 | { |
7998dfc3 AC |
550 | struct target_ops *t; |
551 | ||
08d8bcd7 | 552 | /* First, reset current's contents. */ |
7998dfc3 AC |
553 | memset (¤t_target, 0, sizeof (current_target)); |
554 | ||
1101cb7b TT |
555 | /* Install the delegators. */ |
556 | install_delegators (¤t_target); | |
557 | ||
be4ddd36 TT |
558 | current_target.to_stratum = target_stack->to_stratum; |
559 | ||
7998dfc3 AC |
560 | #define INHERIT(FIELD, TARGET) \ |
561 | if (!current_target.FIELD) \ | |
562 | current_target.FIELD = (TARGET)->FIELD | |
563 | ||
be4ddd36 TT |
564 | /* Do not add any new INHERITs here. Instead, use the delegation |
565 | mechanism provided by make-target-delegates. */ | |
7998dfc3 AC |
566 | for (t = target_stack; t; t = t->beneath) |
567 | { | |
568 | INHERIT (to_shortname, t); | |
569 | INHERIT (to_longname, t); | |
dc177b7a | 570 | INHERIT (to_attach_no_wait, t); |
74174d2e | 571 | INHERIT (to_have_steppable_watchpoint, t); |
7998dfc3 | 572 | INHERIT (to_have_continuable_watchpoint, t); |
7998dfc3 | 573 | INHERIT (to_has_thread_control, t); |
7998dfc3 AC |
574 | } |
575 | #undef INHERIT | |
576 | ||
7998dfc3 AC |
577 | /* Finally, position the target-stack beneath the squashed |
578 | "current_target". That way code looking for a non-inherited | |
579 | target method can quickly and simply find it. */ | |
580 | current_target.beneath = target_stack; | |
b4b61fdb DJ |
581 | |
582 | if (targetdebug) | |
583 | setup_target_debug (); | |
c906108c SS |
584 | } |
585 | ||
586 | /* Push a new target type into the stack of the existing target accessors, | |
587 | possibly superseding some of the existing accessors. | |
588 | ||
c906108c SS |
589 | Rather than allow an empty stack, we always have the dummy target at |
590 | the bottom stratum, so we can call the function vectors without | |
591 | checking them. */ | |
592 | ||
b26a4dcb | 593 | void |
fba45db2 | 594 | push_target (struct target_ops *t) |
c906108c | 595 | { |
258b763a | 596 | struct target_ops **cur; |
c906108c SS |
597 | |
598 | /* Check magic number. If wrong, it probably means someone changed | |
599 | the struct definition, but not all the places that initialize one. */ | |
600 | if (t->to_magic != OPS_MAGIC) | |
601 | { | |
c5aa993b JM |
602 | fprintf_unfiltered (gdb_stderr, |
603 | "Magic number of %s target struct wrong\n", | |
604 | t->to_shortname); | |
3e43a32a MS |
605 | internal_error (__FILE__, __LINE__, |
606 | _("failed internal consistency check")); | |
c906108c SS |
607 | } |
608 | ||
258b763a AC |
609 | /* Find the proper stratum to install this target in. */ |
610 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
c906108c | 611 | { |
258b763a | 612 | if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum) |
c906108c SS |
613 | break; |
614 | } | |
615 | ||
258b763a | 616 | /* If there's already targets at this stratum, remove them. */ |
88c231eb | 617 | /* FIXME: cagney/2003-10-15: I think this should be popping all |
258b763a AC |
618 | targets to CUR, and not just those at this stratum level. */ |
619 | while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum) | |
620 | { | |
621 | /* There's already something at this stratum level. Close it, | |
622 | and un-hook it from the stack. */ | |
623 | struct target_ops *tmp = (*cur); | |
5d502164 | 624 | |
258b763a AC |
625 | (*cur) = (*cur)->beneath; |
626 | tmp->beneath = NULL; | |
460014f5 | 627 | target_close (tmp); |
258b763a | 628 | } |
c906108c SS |
629 | |
630 | /* We have removed all targets in our stratum, now add the new one. */ | |
258b763a AC |
631 | t->beneath = (*cur); |
632 | (*cur) = t; | |
c906108c SS |
633 | |
634 | update_current_target (); | |
c906108c SS |
635 | } |
636 | ||
2bc416ba | 637 | /* Remove a target_ops vector from the stack, wherever it may be. |
c906108c SS |
638 | Return how many times it was removed (0 or 1). */ |
639 | ||
640 | int | |
fba45db2 | 641 | unpush_target (struct target_ops *t) |
c906108c | 642 | { |
258b763a AC |
643 | struct target_ops **cur; |
644 | struct target_ops *tmp; | |
c906108c | 645 | |
c8d104ad PA |
646 | if (t->to_stratum == dummy_stratum) |
647 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 648 | _("Attempt to unpush the dummy target")); |
c8d104ad | 649 | |
c906108c | 650 | /* Look for the specified target. Note that we assume that a target |
c378eb4e | 651 | can only occur once in the target stack. */ |
c906108c | 652 | |
258b763a AC |
653 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) |
654 | { | |
655 | if ((*cur) == t) | |
656 | break; | |
657 | } | |
c906108c | 658 | |
305436e0 PA |
659 | /* If we don't find target_ops, quit. Only open targets should be |
660 | closed. */ | |
258b763a | 661 | if ((*cur) == NULL) |
305436e0 | 662 | return 0; |
5269965e | 663 | |
c378eb4e | 664 | /* Unchain the target. */ |
258b763a AC |
665 | tmp = (*cur); |
666 | (*cur) = (*cur)->beneath; | |
667 | tmp->beneath = NULL; | |
c906108c SS |
668 | |
669 | update_current_target (); | |
c906108c | 670 | |
305436e0 PA |
671 | /* Finally close the target. Note we do this after unchaining, so |
672 | any target method calls from within the target_close | |
673 | implementation don't end up in T anymore. */ | |
460014f5 | 674 | target_close (t); |
305436e0 | 675 | |
c906108c SS |
676 | return 1; |
677 | } | |
678 | ||
aa76d38d | 679 | void |
460014f5 | 680 | pop_all_targets_above (enum strata above_stratum) |
aa76d38d | 681 | { |
87ab71f0 | 682 | while ((int) (current_target.to_stratum) > (int) above_stratum) |
aa76d38d | 683 | { |
aa76d38d PA |
684 | if (!unpush_target (target_stack)) |
685 | { | |
686 | fprintf_unfiltered (gdb_stderr, | |
687 | "pop_all_targets couldn't find target %s\n", | |
b52323fa | 688 | target_stack->to_shortname); |
aa76d38d PA |
689 | internal_error (__FILE__, __LINE__, |
690 | _("failed internal consistency check")); | |
691 | break; | |
692 | } | |
693 | } | |
694 | } | |
695 | ||
87ab71f0 | 696 | void |
460014f5 | 697 | pop_all_targets (void) |
87ab71f0 | 698 | { |
460014f5 | 699 | pop_all_targets_above (dummy_stratum); |
87ab71f0 PA |
700 | } |
701 | ||
c0edd9ed JK |
702 | /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */ |
703 | ||
704 | int | |
705 | target_is_pushed (struct target_ops *t) | |
706 | { | |
707 | struct target_ops **cur; | |
708 | ||
709 | /* Check magic number. If wrong, it probably means someone changed | |
710 | the struct definition, but not all the places that initialize one. */ | |
711 | if (t->to_magic != OPS_MAGIC) | |
712 | { | |
713 | fprintf_unfiltered (gdb_stderr, | |
714 | "Magic number of %s target struct wrong\n", | |
715 | t->to_shortname); | |
3e43a32a MS |
716 | internal_error (__FILE__, __LINE__, |
717 | _("failed internal consistency check")); | |
c0edd9ed JK |
718 | } |
719 | ||
720 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
721 | if (*cur == t) | |
722 | return 1; | |
723 | ||
724 | return 0; | |
725 | } | |
726 | ||
72f5cf0e | 727 | /* Using the objfile specified in OBJFILE, find the address for the |
9e35dae4 DJ |
728 | current thread's thread-local storage with offset OFFSET. */ |
729 | CORE_ADDR | |
730 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) | |
731 | { | |
732 | volatile CORE_ADDR addr = 0; | |
117de6a9 PA |
733 | struct target_ops *target; |
734 | ||
735 | for (target = current_target.beneath; | |
736 | target != NULL; | |
737 | target = target->beneath) | |
738 | { | |
739 | if (target->to_get_thread_local_address != NULL) | |
740 | break; | |
741 | } | |
9e35dae4 | 742 | |
117de6a9 | 743 | if (target != NULL |
f5656ead | 744 | && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ())) |
9e35dae4 DJ |
745 | { |
746 | ptid_t ptid = inferior_ptid; | |
747 | volatile struct gdb_exception ex; | |
748 | ||
749 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
750 | { | |
751 | CORE_ADDR lm_addr; | |
752 | ||
753 | /* Fetch the load module address for this objfile. */ | |
f5656ead | 754 | lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch (), |
9e35dae4 DJ |
755 | objfile); |
756 | /* If it's 0, throw the appropriate exception. */ | |
757 | if (lm_addr == 0) | |
758 | throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR, | |
759 | _("TLS load module not found")); | |
760 | ||
3e43a32a MS |
761 | addr = target->to_get_thread_local_address (target, ptid, |
762 | lm_addr, offset); | |
9e35dae4 DJ |
763 | } |
764 | /* If an error occurred, print TLS related messages here. Otherwise, | |
765 | throw the error to some higher catcher. */ | |
766 | if (ex.reason < 0) | |
767 | { | |
768 | int objfile_is_library = (objfile->flags & OBJF_SHARED); | |
769 | ||
770 | switch (ex.error) | |
771 | { | |
772 | case TLS_NO_LIBRARY_SUPPORT_ERROR: | |
3e43a32a MS |
773 | error (_("Cannot find thread-local variables " |
774 | "in this thread library.")); | |
9e35dae4 DJ |
775 | break; |
776 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: | |
777 | if (objfile_is_library) | |
778 | error (_("Cannot find shared library `%s' in dynamic" | |
4262abfb | 779 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
780 | else |
781 | error (_("Cannot find executable file `%s' in dynamic" | |
4262abfb | 782 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
783 | break; |
784 | case TLS_NOT_ALLOCATED_YET_ERROR: | |
785 | if (objfile_is_library) | |
786 | error (_("The inferior has not yet allocated storage for" | |
787 | " thread-local variables in\n" | |
788 | "the shared library `%s'\n" | |
789 | "for %s"), | |
4262abfb | 790 | objfile_name (objfile), target_pid_to_str (ptid)); |
9e35dae4 DJ |
791 | else |
792 | error (_("The inferior has not yet allocated storage for" | |
793 | " thread-local variables in\n" | |
794 | "the executable `%s'\n" | |
795 | "for %s"), | |
4262abfb | 796 | objfile_name (objfile), target_pid_to_str (ptid)); |
9e35dae4 DJ |
797 | break; |
798 | case TLS_GENERIC_ERROR: | |
799 | if (objfile_is_library) | |
800 | error (_("Cannot find thread-local storage for %s, " | |
801 | "shared library %s:\n%s"), | |
802 | target_pid_to_str (ptid), | |
4262abfb | 803 | objfile_name (objfile), ex.message); |
9e35dae4 DJ |
804 | else |
805 | error (_("Cannot find thread-local storage for %s, " | |
806 | "executable file %s:\n%s"), | |
807 | target_pid_to_str (ptid), | |
4262abfb | 808 | objfile_name (objfile), ex.message); |
9e35dae4 DJ |
809 | break; |
810 | default: | |
811 | throw_exception (ex); | |
812 | break; | |
813 | } | |
814 | } | |
815 | } | |
816 | /* It wouldn't be wrong here to try a gdbarch method, too; finding | |
817 | TLS is an ABI-specific thing. But we don't do that yet. */ | |
818 | else | |
819 | error (_("Cannot find thread-local variables on this target")); | |
820 | ||
821 | return addr; | |
822 | } | |
823 | ||
6be7b56e | 824 | const char * |
01cb8804 | 825 | target_xfer_status_to_string (enum target_xfer_status status) |
6be7b56e PA |
826 | { |
827 | #define CASE(X) case X: return #X | |
01cb8804 | 828 | switch (status) |
6be7b56e PA |
829 | { |
830 | CASE(TARGET_XFER_E_IO); | |
bc113b4e | 831 | CASE(TARGET_XFER_UNAVAILABLE); |
6be7b56e PA |
832 | default: |
833 | return "<unknown>"; | |
834 | } | |
835 | #undef CASE | |
836 | }; | |
837 | ||
838 | ||
c906108c SS |
839 | #undef MIN |
840 | #define MIN(A, B) (((A) <= (B)) ? (A) : (B)) | |
841 | ||
842 | /* target_read_string -- read a null terminated string, up to LEN bytes, | |
843 | from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful. | |
844 | Set *STRING to a pointer to malloc'd memory containing the data; the caller | |
845 | is responsible for freeing it. Return the number of bytes successfully | |
846 | read. */ | |
847 | ||
848 | int | |
fba45db2 | 849 | target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop) |
c906108c | 850 | { |
c2e8b827 | 851 | int tlen, offset, i; |
1b0ba102 | 852 | gdb_byte buf[4]; |
c906108c SS |
853 | int errcode = 0; |
854 | char *buffer; | |
855 | int buffer_allocated; | |
856 | char *bufptr; | |
857 | unsigned int nbytes_read = 0; | |
858 | ||
6217bf3e MS |
859 | gdb_assert (string); |
860 | ||
c906108c SS |
861 | /* Small for testing. */ |
862 | buffer_allocated = 4; | |
863 | buffer = xmalloc (buffer_allocated); | |
864 | bufptr = buffer; | |
865 | ||
c906108c SS |
866 | while (len > 0) |
867 | { | |
868 | tlen = MIN (len, 4 - (memaddr & 3)); | |
869 | offset = memaddr & 3; | |
870 | ||
1b0ba102 | 871 | errcode = target_read_memory (memaddr & ~3, buf, sizeof buf); |
c906108c SS |
872 | if (errcode != 0) |
873 | { | |
874 | /* The transfer request might have crossed the boundary to an | |
c378eb4e | 875 | unallocated region of memory. Retry the transfer, requesting |
c906108c SS |
876 | a single byte. */ |
877 | tlen = 1; | |
878 | offset = 0; | |
b8eb5af0 | 879 | errcode = target_read_memory (memaddr, buf, 1); |
c906108c SS |
880 | if (errcode != 0) |
881 | goto done; | |
882 | } | |
883 | ||
884 | if (bufptr - buffer + tlen > buffer_allocated) | |
885 | { | |
886 | unsigned int bytes; | |
5d502164 | 887 | |
c906108c SS |
888 | bytes = bufptr - buffer; |
889 | buffer_allocated *= 2; | |
890 | buffer = xrealloc (buffer, buffer_allocated); | |
891 | bufptr = buffer + bytes; | |
892 | } | |
893 | ||
894 | for (i = 0; i < tlen; i++) | |
895 | { | |
896 | *bufptr++ = buf[i + offset]; | |
897 | if (buf[i + offset] == '\000') | |
898 | { | |
899 | nbytes_read += i + 1; | |
900 | goto done; | |
901 | } | |
902 | } | |
903 | ||
904 | memaddr += tlen; | |
905 | len -= tlen; | |
906 | nbytes_read += tlen; | |
907 | } | |
c5aa993b | 908 | done: |
6217bf3e | 909 | *string = buffer; |
c906108c SS |
910 | if (errnop != NULL) |
911 | *errnop = errcode; | |
c906108c SS |
912 | return nbytes_read; |
913 | } | |
914 | ||
07b82ea5 PA |
915 | struct target_section_table * |
916 | target_get_section_table (struct target_ops *target) | |
917 | { | |
07b82ea5 PA |
918 | if (targetdebug) |
919 | fprintf_unfiltered (gdb_stdlog, "target_get_section_table ()\n"); | |
920 | ||
7e35c012 | 921 | return (*target->to_get_section_table) (target); |
07b82ea5 PA |
922 | } |
923 | ||
8db32d44 | 924 | /* Find a section containing ADDR. */ |
07b82ea5 | 925 | |
0542c86d | 926 | struct target_section * |
8db32d44 AC |
927 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
928 | { | |
07b82ea5 | 929 | struct target_section_table *table = target_get_section_table (target); |
0542c86d | 930 | struct target_section *secp; |
07b82ea5 PA |
931 | |
932 | if (table == NULL) | |
933 | return NULL; | |
934 | ||
935 | for (secp = table->sections; secp < table->sections_end; secp++) | |
8db32d44 AC |
936 | { |
937 | if (addr >= secp->addr && addr < secp->endaddr) | |
938 | return secp; | |
939 | } | |
940 | return NULL; | |
941 | } | |
942 | ||
e6e4e701 PA |
943 | /* Read memory from the live target, even if currently inspecting a |
944 | traceframe. The return is the same as that of target_read. */ | |
945 | ||
9b409511 | 946 | static enum target_xfer_status |
e6e4e701 | 947 | target_read_live_memory (enum target_object object, |
9b409511 YQ |
948 | ULONGEST memaddr, gdb_byte *myaddr, ULONGEST len, |
949 | ULONGEST *xfered_len) | |
e6e4e701 | 950 | { |
9b409511 | 951 | enum target_xfer_status ret; |
e6e4e701 PA |
952 | struct cleanup *cleanup; |
953 | ||
954 | /* Switch momentarily out of tfind mode so to access live memory. | |
955 | Note that this must not clear global state, such as the frame | |
956 | cache, which must still remain valid for the previous traceframe. | |
957 | We may be _building_ the frame cache at this point. */ | |
958 | cleanup = make_cleanup_restore_traceframe_number (); | |
959 | set_traceframe_number (-1); | |
960 | ||
9b409511 YQ |
961 | ret = target_xfer_partial (current_target.beneath, object, NULL, |
962 | myaddr, NULL, memaddr, len, xfered_len); | |
e6e4e701 PA |
963 | |
964 | do_cleanups (cleanup); | |
965 | return ret; | |
966 | } | |
967 | ||
968 | /* Using the set of read-only target sections of OPS, read live | |
969 | read-only memory. Note that the actual reads start from the | |
5657161f PA |
970 | top-most target again. |
971 | ||
972 | For interface/parameters/return description see target.h, | |
973 | to_xfer_partial. */ | |
e6e4e701 | 974 | |
9b409511 | 975 | static enum target_xfer_status |
e6e4e701 PA |
976 | memory_xfer_live_readonly_partial (struct target_ops *ops, |
977 | enum target_object object, | |
978 | gdb_byte *readbuf, ULONGEST memaddr, | |
9b409511 | 979 | ULONGEST len, ULONGEST *xfered_len) |
e6e4e701 PA |
980 | { |
981 | struct target_section *secp; | |
982 | struct target_section_table *table; | |
983 | ||
984 | secp = target_section_by_addr (ops, memaddr); | |
985 | if (secp != NULL | |
2b2848e2 DE |
986 | && (bfd_get_section_flags (secp->the_bfd_section->owner, |
987 | secp->the_bfd_section) | |
e6e4e701 PA |
988 | & SEC_READONLY)) |
989 | { | |
990 | struct target_section *p; | |
991 | ULONGEST memend = memaddr + len; | |
992 | ||
993 | table = target_get_section_table (ops); | |
994 | ||
995 | for (p = table->sections; p < table->sections_end; p++) | |
996 | { | |
997 | if (memaddr >= p->addr) | |
998 | { | |
999 | if (memend <= p->endaddr) | |
1000 | { | |
1001 | /* Entire transfer is within this section. */ | |
1002 | return target_read_live_memory (object, memaddr, | |
9b409511 | 1003 | readbuf, len, xfered_len); |
e6e4e701 PA |
1004 | } |
1005 | else if (memaddr >= p->endaddr) | |
1006 | { | |
1007 | /* This section ends before the transfer starts. */ | |
1008 | continue; | |
1009 | } | |
1010 | else | |
1011 | { | |
1012 | /* This section overlaps the transfer. Just do half. */ | |
1013 | len = p->endaddr - memaddr; | |
1014 | return target_read_live_memory (object, memaddr, | |
9b409511 | 1015 | readbuf, len, xfered_len); |
e6e4e701 PA |
1016 | } |
1017 | } | |
1018 | } | |
1019 | } | |
1020 | ||
9b409511 | 1021 | return TARGET_XFER_EOF; |
e6e4e701 PA |
1022 | } |
1023 | ||
9f713294 YQ |
1024 | /* Read memory from more than one valid target. A core file, for |
1025 | instance, could have some of memory but delegate other bits to | |
1026 | the target below it. So, we must manually try all targets. */ | |
1027 | ||
9b409511 | 1028 | static enum target_xfer_status |
17fde6d0 | 1029 | raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf, |
9b409511 YQ |
1030 | const gdb_byte *writebuf, ULONGEST memaddr, LONGEST len, |
1031 | ULONGEST *xfered_len) | |
9f713294 | 1032 | { |
9b409511 | 1033 | enum target_xfer_status res; |
9f713294 YQ |
1034 | |
1035 | do | |
1036 | { | |
1037 | res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 YQ |
1038 | readbuf, writebuf, memaddr, len, |
1039 | xfered_len); | |
1040 | if (res == TARGET_XFER_OK) | |
9f713294 YQ |
1041 | break; |
1042 | ||
633785ff | 1043 | /* Stop if the target reports that the memory is not available. */ |
bc113b4e | 1044 | if (res == TARGET_XFER_UNAVAILABLE) |
633785ff MM |
1045 | break; |
1046 | ||
9f713294 YQ |
1047 | /* We want to continue past core files to executables, but not |
1048 | past a running target's memory. */ | |
1049 | if (ops->to_has_all_memory (ops)) | |
1050 | break; | |
1051 | ||
1052 | ops = ops->beneath; | |
1053 | } | |
1054 | while (ops != NULL); | |
1055 | ||
0f26cec1 PA |
1056 | /* The cache works at the raw memory level. Make sure the cache |
1057 | gets updated with raw contents no matter what kind of memory | |
1058 | object was originally being written. Note we do write-through | |
1059 | first, so that if it fails, we don't write to the cache contents | |
1060 | that never made it to the target. */ | |
1061 | if (writebuf != NULL | |
1062 | && !ptid_equal (inferior_ptid, null_ptid) | |
1063 | && target_dcache_init_p () | |
1064 | && (stack_cache_enabled_p () || code_cache_enabled_p ())) | |
1065 | { | |
1066 | DCACHE *dcache = target_dcache_get (); | |
1067 | ||
1068 | /* Note that writing to an area of memory which wasn't present | |
1069 | in the cache doesn't cause it to be loaded in. */ | |
1070 | dcache_update (dcache, res, memaddr, writebuf, *xfered_len); | |
1071 | } | |
1072 | ||
9f713294 YQ |
1073 | return res; |
1074 | } | |
1075 | ||
7f79c47e DE |
1076 | /* Perform a partial memory transfer. |
1077 | For docs see target.h, to_xfer_partial. */ | |
cf7a04e8 | 1078 | |
9b409511 | 1079 | static enum target_xfer_status |
f0ba3972 | 1080 | memory_xfer_partial_1 (struct target_ops *ops, enum target_object object, |
17fde6d0 | 1081 | gdb_byte *readbuf, const gdb_byte *writebuf, ULONGEST memaddr, |
9b409511 | 1082 | ULONGEST len, ULONGEST *xfered_len) |
0779438d | 1083 | { |
9b409511 | 1084 | enum target_xfer_status res; |
cf7a04e8 DJ |
1085 | int reg_len; |
1086 | struct mem_region *region; | |
4e5d721f | 1087 | struct inferior *inf; |
cf7a04e8 | 1088 | |
07b82ea5 PA |
1089 | /* For accesses to unmapped overlay sections, read directly from |
1090 | files. Must do this first, as MEMADDR may need adjustment. */ | |
1091 | if (readbuf != NULL && overlay_debugging) | |
1092 | { | |
1093 | struct obj_section *section = find_pc_overlay (memaddr); | |
5d502164 | 1094 | |
07b82ea5 PA |
1095 | if (pc_in_unmapped_range (memaddr, section)) |
1096 | { | |
1097 | struct target_section_table *table | |
1098 | = target_get_section_table (ops); | |
1099 | const char *section_name = section->the_bfd_section->name; | |
5d502164 | 1100 | |
07b82ea5 PA |
1101 | memaddr = overlay_mapped_address (memaddr, section); |
1102 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 1103 | memaddr, len, xfered_len, |
07b82ea5 PA |
1104 | table->sections, |
1105 | table->sections_end, | |
1106 | section_name); | |
1107 | } | |
1108 | } | |
1109 | ||
1110 | /* Try the executable files, if "trust-readonly-sections" is set. */ | |
cf7a04e8 DJ |
1111 | if (readbuf != NULL && trust_readonly) |
1112 | { | |
0542c86d | 1113 | struct target_section *secp; |
07b82ea5 | 1114 | struct target_section_table *table; |
cf7a04e8 DJ |
1115 | |
1116 | secp = target_section_by_addr (ops, memaddr); | |
1117 | if (secp != NULL | |
2b2848e2 DE |
1118 | && (bfd_get_section_flags (secp->the_bfd_section->owner, |
1119 | secp->the_bfd_section) | |
cf7a04e8 | 1120 | & SEC_READONLY)) |
07b82ea5 PA |
1121 | { |
1122 | table = target_get_section_table (ops); | |
1123 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 1124 | memaddr, len, xfered_len, |
07b82ea5 PA |
1125 | table->sections, |
1126 | table->sections_end, | |
1127 | NULL); | |
1128 | } | |
98646950 UW |
1129 | } |
1130 | ||
e6e4e701 PA |
1131 | /* If reading unavailable memory in the context of traceframes, and |
1132 | this address falls within a read-only section, fallback to | |
1133 | reading from live memory. */ | |
1134 | if (readbuf != NULL && get_traceframe_number () != -1) | |
1135 | { | |
1136 | VEC(mem_range_s) *available; | |
1137 | ||
1138 | /* If we fail to get the set of available memory, then the | |
1139 | target does not support querying traceframe info, and so we | |
1140 | attempt reading from the traceframe anyway (assuming the | |
1141 | target implements the old QTro packet then). */ | |
1142 | if (traceframe_available_memory (&available, memaddr, len)) | |
1143 | { | |
1144 | struct cleanup *old_chain; | |
1145 | ||
1146 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available); | |
1147 | ||
1148 | if (VEC_empty (mem_range_s, available) | |
1149 | || VEC_index (mem_range_s, available, 0)->start != memaddr) | |
1150 | { | |
1151 | /* Don't read into the traceframe's available | |
1152 | memory. */ | |
1153 | if (!VEC_empty (mem_range_s, available)) | |
1154 | { | |
1155 | LONGEST oldlen = len; | |
1156 | ||
1157 | len = VEC_index (mem_range_s, available, 0)->start - memaddr; | |
1158 | gdb_assert (len <= oldlen); | |
1159 | } | |
1160 | ||
1161 | do_cleanups (old_chain); | |
1162 | ||
1163 | /* This goes through the topmost target again. */ | |
1164 | res = memory_xfer_live_readonly_partial (ops, object, | |
9b409511 YQ |
1165 | readbuf, memaddr, |
1166 | len, xfered_len); | |
1167 | if (res == TARGET_XFER_OK) | |
1168 | return TARGET_XFER_OK; | |
1169 | else | |
1170 | { | |
1171 | /* No use trying further, we know some memory starting | |
1172 | at MEMADDR isn't available. */ | |
1173 | *xfered_len = len; | |
bc113b4e | 1174 | return TARGET_XFER_UNAVAILABLE; |
9b409511 | 1175 | } |
e6e4e701 PA |
1176 | } |
1177 | ||
1178 | /* Don't try to read more than how much is available, in | |
1179 | case the target implements the deprecated QTro packet to | |
1180 | cater for older GDBs (the target's knowledge of read-only | |
1181 | sections may be outdated by now). */ | |
1182 | len = VEC_index (mem_range_s, available, 0)->length; | |
1183 | ||
1184 | do_cleanups (old_chain); | |
1185 | } | |
1186 | } | |
1187 | ||
cf7a04e8 DJ |
1188 | /* Try GDB's internal data cache. */ |
1189 | region = lookup_mem_region (memaddr); | |
4b5752d0 VP |
1190 | /* region->hi == 0 means there's no upper bound. */ |
1191 | if (memaddr + len < region->hi || region->hi == 0) | |
cf7a04e8 DJ |
1192 | reg_len = len; |
1193 | else | |
1194 | reg_len = region->hi - memaddr; | |
1195 | ||
1196 | switch (region->attrib.mode) | |
1197 | { | |
1198 | case MEM_RO: | |
1199 | if (writebuf != NULL) | |
2ed4b548 | 1200 | return TARGET_XFER_E_IO; |
cf7a04e8 DJ |
1201 | break; |
1202 | ||
1203 | case MEM_WO: | |
1204 | if (readbuf != NULL) | |
2ed4b548 | 1205 | return TARGET_XFER_E_IO; |
cf7a04e8 | 1206 | break; |
a76d924d DJ |
1207 | |
1208 | case MEM_FLASH: | |
1209 | /* We only support writing to flash during "load" for now. */ | |
1210 | if (writebuf != NULL) | |
1211 | error (_("Writing to flash memory forbidden in this context")); | |
1212 | break; | |
4b5752d0 VP |
1213 | |
1214 | case MEM_NONE: | |
2ed4b548 | 1215 | return TARGET_XFER_E_IO; |
cf7a04e8 DJ |
1216 | } |
1217 | ||
6c95b8df PA |
1218 | if (!ptid_equal (inferior_ptid, null_ptid)) |
1219 | inf = find_inferior_pid (ptid_get_pid (inferior_ptid)); | |
1220 | else | |
1221 | inf = NULL; | |
4e5d721f DE |
1222 | |
1223 | if (inf != NULL | |
0f26cec1 | 1224 | && readbuf != NULL |
2f4d8875 PA |
1225 | /* The dcache reads whole cache lines; that doesn't play well |
1226 | with reading from a trace buffer, because reading outside of | |
1227 | the collected memory range fails. */ | |
1228 | && get_traceframe_number () == -1 | |
4e5d721f | 1229 | && (region->attrib.cache |
29453a14 YQ |
1230 | || (stack_cache_enabled_p () && object == TARGET_OBJECT_STACK_MEMORY) |
1231 | || (code_cache_enabled_p () && object == TARGET_OBJECT_CODE_MEMORY))) | |
cf7a04e8 | 1232 | { |
2a2f9fe4 YQ |
1233 | DCACHE *dcache = target_dcache_get_or_init (); |
1234 | ||
0f26cec1 PA |
1235 | return dcache_read_memory_partial (ops, dcache, memaddr, readbuf, |
1236 | reg_len, xfered_len); | |
cf7a04e8 DJ |
1237 | } |
1238 | ||
1239 | /* If none of those methods found the memory we wanted, fall back | |
1240 | to a target partial transfer. Normally a single call to | |
1241 | to_xfer_partial is enough; if it doesn't recognize an object | |
1242 | it will call the to_xfer_partial of the next target down. | |
1243 | But for memory this won't do. Memory is the only target | |
9b409511 YQ |
1244 | object which can be read from more than one valid target. |
1245 | A core file, for instance, could have some of memory but | |
1246 | delegate other bits to the target below it. So, we must | |
1247 | manually try all targets. */ | |
1248 | ||
1249 | res = raw_memory_xfer_partial (ops, readbuf, writebuf, memaddr, reg_len, | |
1250 | xfered_len); | |
cf7a04e8 DJ |
1251 | |
1252 | /* If we still haven't got anything, return the last error. We | |
1253 | give up. */ | |
1254 | return res; | |
0779438d AC |
1255 | } |
1256 | ||
f0ba3972 PA |
1257 | /* Perform a partial memory transfer. For docs see target.h, |
1258 | to_xfer_partial. */ | |
1259 | ||
9b409511 | 1260 | static enum target_xfer_status |
f0ba3972 | 1261 | memory_xfer_partial (struct target_ops *ops, enum target_object object, |
9b409511 YQ |
1262 | gdb_byte *readbuf, const gdb_byte *writebuf, |
1263 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) | |
f0ba3972 | 1264 | { |
9b409511 | 1265 | enum target_xfer_status res; |
f0ba3972 PA |
1266 | |
1267 | /* Zero length requests are ok and require no work. */ | |
1268 | if (len == 0) | |
9b409511 | 1269 | return TARGET_XFER_EOF; |
f0ba3972 PA |
1270 | |
1271 | /* Fill in READBUF with breakpoint shadows, or WRITEBUF with | |
1272 | breakpoint insns, thus hiding out from higher layers whether | |
1273 | there are software breakpoints inserted in the code stream. */ | |
1274 | if (readbuf != NULL) | |
1275 | { | |
9b409511 YQ |
1276 | res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len, |
1277 | xfered_len); | |
f0ba3972 | 1278 | |
9b409511 | 1279 | if (res == TARGET_XFER_OK && !show_memory_breakpoints) |
c63528fc | 1280 | breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, *xfered_len); |
f0ba3972 PA |
1281 | } |
1282 | else | |
1283 | { | |
1284 | void *buf; | |
1285 | struct cleanup *old_chain; | |
1286 | ||
67c059c2 AB |
1287 | /* A large write request is likely to be partially satisfied |
1288 | by memory_xfer_partial_1. We will continually malloc | |
1289 | and free a copy of the entire write request for breakpoint | |
1290 | shadow handling even though we only end up writing a small | |
1291 | subset of it. Cap writes to 4KB to mitigate this. */ | |
1292 | len = min (4096, len); | |
1293 | ||
f0ba3972 PA |
1294 | buf = xmalloc (len); |
1295 | old_chain = make_cleanup (xfree, buf); | |
1296 | memcpy (buf, writebuf, len); | |
1297 | ||
1298 | breakpoint_xfer_memory (NULL, buf, writebuf, memaddr, len); | |
9b409511 YQ |
1299 | res = memory_xfer_partial_1 (ops, object, NULL, buf, memaddr, len, |
1300 | xfered_len); | |
f0ba3972 PA |
1301 | |
1302 | do_cleanups (old_chain); | |
1303 | } | |
1304 | ||
1305 | return res; | |
1306 | } | |
1307 | ||
8defab1a DJ |
1308 | static void |
1309 | restore_show_memory_breakpoints (void *arg) | |
1310 | { | |
1311 | show_memory_breakpoints = (uintptr_t) arg; | |
1312 | } | |
1313 | ||
1314 | struct cleanup * | |
1315 | make_show_memory_breakpoints_cleanup (int show) | |
1316 | { | |
1317 | int current = show_memory_breakpoints; | |
8defab1a | 1318 | |
5d502164 | 1319 | show_memory_breakpoints = show; |
8defab1a DJ |
1320 | return make_cleanup (restore_show_memory_breakpoints, |
1321 | (void *) (uintptr_t) current); | |
1322 | } | |
1323 | ||
7f79c47e DE |
1324 | /* For docs see target.h, to_xfer_partial. */ |
1325 | ||
9b409511 | 1326 | enum target_xfer_status |
27394598 AC |
1327 | target_xfer_partial (struct target_ops *ops, |
1328 | enum target_object object, const char *annex, | |
4ac248ca | 1329 | gdb_byte *readbuf, const gdb_byte *writebuf, |
9b409511 YQ |
1330 | ULONGEST offset, ULONGEST len, |
1331 | ULONGEST *xfered_len) | |
27394598 | 1332 | { |
9b409511 | 1333 | enum target_xfer_status retval; |
27394598 AC |
1334 | |
1335 | gdb_assert (ops->to_xfer_partial != NULL); | |
cf7a04e8 | 1336 | |
ce6d0892 YQ |
1337 | /* Transfer is done when LEN is zero. */ |
1338 | if (len == 0) | |
9b409511 | 1339 | return TARGET_XFER_EOF; |
ce6d0892 | 1340 | |
d914c394 SS |
1341 | if (writebuf && !may_write_memory) |
1342 | error (_("Writing to memory is not allowed (addr %s, len %s)"), | |
1343 | core_addr_to_string_nz (offset), plongest (len)); | |
1344 | ||
9b409511 YQ |
1345 | *xfered_len = 0; |
1346 | ||
cf7a04e8 DJ |
1347 | /* If this is a memory transfer, let the memory-specific code |
1348 | have a look at it instead. Memory transfers are more | |
1349 | complicated. */ | |
29453a14 YQ |
1350 | if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY |
1351 | || object == TARGET_OBJECT_CODE_MEMORY) | |
4e5d721f | 1352 | retval = memory_xfer_partial (ops, object, readbuf, |
9b409511 | 1353 | writebuf, offset, len, xfered_len); |
9f713294 | 1354 | else if (object == TARGET_OBJECT_RAW_MEMORY) |
cf7a04e8 | 1355 | { |
9f713294 | 1356 | /* Request the normal memory object from other layers. */ |
9b409511 YQ |
1357 | retval = raw_memory_xfer_partial (ops, readbuf, writebuf, offset, len, |
1358 | xfered_len); | |
cf7a04e8 | 1359 | } |
9f713294 YQ |
1360 | else |
1361 | retval = ops->to_xfer_partial (ops, object, annex, readbuf, | |
9b409511 | 1362 | writebuf, offset, len, xfered_len); |
cf7a04e8 | 1363 | |
27394598 AC |
1364 | if (targetdebug) |
1365 | { | |
1366 | const unsigned char *myaddr = NULL; | |
1367 | ||
1368 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a | 1369 | "%s:target_xfer_partial " |
9b409511 | 1370 | "(%d, %s, %s, %s, %s, %s) = %d, %s", |
27394598 AC |
1371 | ops->to_shortname, |
1372 | (int) object, | |
1373 | (annex ? annex : "(null)"), | |
53b71562 JB |
1374 | host_address_to_string (readbuf), |
1375 | host_address_to_string (writebuf), | |
0b1553bc | 1376 | core_addr_to_string_nz (offset), |
9b409511 YQ |
1377 | pulongest (len), retval, |
1378 | pulongest (*xfered_len)); | |
27394598 AC |
1379 | |
1380 | if (readbuf) | |
1381 | myaddr = readbuf; | |
1382 | if (writebuf) | |
1383 | myaddr = writebuf; | |
9b409511 | 1384 | if (retval == TARGET_XFER_OK && myaddr != NULL) |
27394598 AC |
1385 | { |
1386 | int i; | |
2bc416ba | 1387 | |
27394598 | 1388 | fputs_unfiltered (", bytes =", gdb_stdlog); |
9b409511 | 1389 | for (i = 0; i < *xfered_len; i++) |
27394598 | 1390 | { |
53b71562 | 1391 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1392 | { |
1393 | if (targetdebug < 2 && i > 0) | |
1394 | { | |
1395 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
1396 | break; | |
1397 | } | |
1398 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1399 | } | |
2bc416ba | 1400 | |
27394598 AC |
1401 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
1402 | } | |
1403 | } | |
2bc416ba | 1404 | |
27394598 AC |
1405 | fputc_unfiltered ('\n', gdb_stdlog); |
1406 | } | |
9b409511 YQ |
1407 | |
1408 | /* Check implementations of to_xfer_partial update *XFERED_LEN | |
1409 | properly. Do assertion after printing debug messages, so that we | |
1410 | can find more clues on assertion failure from debugging messages. */ | |
bc113b4e | 1411 | if (retval == TARGET_XFER_OK || retval == TARGET_XFER_UNAVAILABLE) |
9b409511 YQ |
1412 | gdb_assert (*xfered_len > 0); |
1413 | ||
27394598 AC |
1414 | return retval; |
1415 | } | |
1416 | ||
578d3588 PA |
1417 | /* Read LEN bytes of target memory at address MEMADDR, placing the |
1418 | results in GDB's memory at MYADDR. Returns either 0 for success or | |
9b409511 | 1419 | TARGET_XFER_E_IO if any error occurs. |
c906108c SS |
1420 | |
1421 | If an error occurs, no guarantee is made about the contents of the data at | |
1422 | MYADDR. In particular, the caller should not depend upon partial reads | |
1423 | filling the buffer with good data. There is no way for the caller to know | |
1424 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 | 1425 | deal with partial reads should call target_read (which will retry until |
c378eb4e | 1426 | it makes no progress, and then return how much was transferred). */ |
c906108c SS |
1427 | |
1428 | int | |
1b162304 | 1429 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
c906108c | 1430 | { |
c35b1492 PA |
1431 | /* Dispatch to the topmost target, not the flattened current_target. |
1432 | Memory accesses check target->to_has_(all_)memory, and the | |
1433 | flattened target doesn't inherit those. */ | |
1434 | if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1435 | myaddr, memaddr, len) == len) |
1436 | return 0; | |
0779438d | 1437 | else |
578d3588 | 1438 | return TARGET_XFER_E_IO; |
c906108c SS |
1439 | } |
1440 | ||
aee4bf85 PA |
1441 | /* Like target_read_memory, but specify explicitly that this is a read |
1442 | from the target's raw memory. That is, this read bypasses the | |
1443 | dcache, breakpoint shadowing, etc. */ | |
1444 | ||
1445 | int | |
1446 | target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1447 | { | |
1448 | /* See comment in target_read_memory about why the request starts at | |
1449 | current_target.beneath. */ | |
1450 | if (target_read (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, | |
1451 | myaddr, memaddr, len) == len) | |
1452 | return 0; | |
1453 | else | |
1454 | return TARGET_XFER_E_IO; | |
1455 | } | |
1456 | ||
4e5d721f DE |
1457 | /* Like target_read_memory, but specify explicitly that this is a read from |
1458 | the target's stack. This may trigger different cache behavior. */ | |
1459 | ||
1460 | int | |
45aa4659 | 1461 | target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
4e5d721f | 1462 | { |
aee4bf85 PA |
1463 | /* See comment in target_read_memory about why the request starts at |
1464 | current_target.beneath. */ | |
4e5d721f DE |
1465 | if (target_read (current_target.beneath, TARGET_OBJECT_STACK_MEMORY, NULL, |
1466 | myaddr, memaddr, len) == len) | |
1467 | return 0; | |
1468 | else | |
578d3588 | 1469 | return TARGET_XFER_E_IO; |
4e5d721f DE |
1470 | } |
1471 | ||
29453a14 YQ |
1472 | /* Like target_read_memory, but specify explicitly that this is a read from |
1473 | the target's code. This may trigger different cache behavior. */ | |
1474 | ||
1475 | int | |
1476 | target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1477 | { | |
aee4bf85 PA |
1478 | /* See comment in target_read_memory about why the request starts at |
1479 | current_target.beneath. */ | |
29453a14 YQ |
1480 | if (target_read (current_target.beneath, TARGET_OBJECT_CODE_MEMORY, NULL, |
1481 | myaddr, memaddr, len) == len) | |
1482 | return 0; | |
1483 | else | |
1484 | return TARGET_XFER_E_IO; | |
1485 | } | |
1486 | ||
7f79c47e | 1487 | /* Write LEN bytes from MYADDR to target memory at address MEMADDR. |
9b409511 | 1488 | Returns either 0 for success or TARGET_XFER_E_IO if any |
578d3588 PA |
1489 | error occurs. If an error occurs, no guarantee is made about how |
1490 | much data got written. Callers that can deal with partial writes | |
1491 | should call target_write. */ | |
7f79c47e | 1492 | |
c906108c | 1493 | int |
45aa4659 | 1494 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
c906108c | 1495 | { |
aee4bf85 PA |
1496 | /* See comment in target_read_memory about why the request starts at |
1497 | current_target.beneath. */ | |
c35b1492 | 1498 | if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, |
cf7a04e8 DJ |
1499 | myaddr, memaddr, len) == len) |
1500 | return 0; | |
0779438d | 1501 | else |
578d3588 | 1502 | return TARGET_XFER_E_IO; |
c906108c | 1503 | } |
c5aa993b | 1504 | |
f0ba3972 | 1505 | /* Write LEN bytes from MYADDR to target raw memory at address |
9b409511 | 1506 | MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO |
578d3588 PA |
1507 | if any error occurs. If an error occurs, no guarantee is made |
1508 | about how much data got written. Callers that can deal with | |
1509 | partial writes should call target_write. */ | |
f0ba3972 PA |
1510 | |
1511 | int | |
45aa4659 | 1512 | target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
f0ba3972 | 1513 | { |
aee4bf85 PA |
1514 | /* See comment in target_read_memory about why the request starts at |
1515 | current_target.beneath. */ | |
f0ba3972 PA |
1516 | if (target_write (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, |
1517 | myaddr, memaddr, len) == len) | |
1518 | return 0; | |
1519 | else | |
578d3588 | 1520 | return TARGET_XFER_E_IO; |
f0ba3972 PA |
1521 | } |
1522 | ||
fd79ecee DJ |
1523 | /* Fetch the target's memory map. */ |
1524 | ||
1525 | VEC(mem_region_s) * | |
1526 | target_memory_map (void) | |
1527 | { | |
1528 | VEC(mem_region_s) *result; | |
1529 | struct mem_region *last_one, *this_one; | |
1530 | int ix; | |
1531 | struct target_ops *t; | |
1532 | ||
1533 | if (targetdebug) | |
1534 | fprintf_unfiltered (gdb_stdlog, "target_memory_map ()\n"); | |
1535 | ||
6b2c5a57 | 1536 | result = current_target.to_memory_map (¤t_target); |
fd79ecee DJ |
1537 | if (result == NULL) |
1538 | return NULL; | |
1539 | ||
1540 | qsort (VEC_address (mem_region_s, result), | |
1541 | VEC_length (mem_region_s, result), | |
1542 | sizeof (struct mem_region), mem_region_cmp); | |
1543 | ||
1544 | /* Check that regions do not overlap. Simultaneously assign | |
1545 | a numbering for the "mem" commands to use to refer to | |
1546 | each region. */ | |
1547 | last_one = NULL; | |
1548 | for (ix = 0; VEC_iterate (mem_region_s, result, ix, this_one); ix++) | |
1549 | { | |
1550 | this_one->number = ix; | |
1551 | ||
1552 | if (last_one && last_one->hi > this_one->lo) | |
1553 | { | |
1554 | warning (_("Overlapping regions in memory map: ignoring")); | |
1555 | VEC_free (mem_region_s, result); | |
1556 | return NULL; | |
1557 | } | |
1558 | last_one = this_one; | |
1559 | } | |
1560 | ||
1561 | return result; | |
1562 | } | |
1563 | ||
a76d924d DJ |
1564 | void |
1565 | target_flash_erase (ULONGEST address, LONGEST length) | |
1566 | { | |
e8a6c6ac TT |
1567 | if (targetdebug) |
1568 | fprintf_unfiltered (gdb_stdlog, "target_flash_erase (%s, %s)\n", | |
1569 | hex_string (address), phex (length, 0)); | |
1570 | current_target.to_flash_erase (¤t_target, address, length); | |
a76d924d DJ |
1571 | } |
1572 | ||
1573 | void | |
1574 | target_flash_done (void) | |
1575 | { | |
f6fb2925 TT |
1576 | if (targetdebug) |
1577 | fprintf_unfiltered (gdb_stdlog, "target_flash_done\n"); | |
1578 | current_target.to_flash_done (¤t_target); | |
a76d924d DJ |
1579 | } |
1580 | ||
920d2a44 AC |
1581 | static void |
1582 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1583 | struct cmd_list_element *c, const char *value) | |
1584 | { | |
3e43a32a MS |
1585 | fprintf_filtered (file, |
1586 | _("Mode for reading from readonly sections is %s.\n"), | |
920d2a44 AC |
1587 | value); |
1588 | } | |
3a11626d | 1589 | |
7f79c47e | 1590 | /* Target vector read/write partial wrapper functions. */ |
0088c768 | 1591 | |
9b409511 | 1592 | static enum target_xfer_status |
1e3ff5ad AC |
1593 | target_read_partial (struct target_ops *ops, |
1594 | enum target_object object, | |
1b0ba102 | 1595 | const char *annex, gdb_byte *buf, |
9b409511 YQ |
1596 | ULONGEST offset, ULONGEST len, |
1597 | ULONGEST *xfered_len) | |
1e3ff5ad | 1598 | { |
9b409511 YQ |
1599 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len, |
1600 | xfered_len); | |
1e3ff5ad AC |
1601 | } |
1602 | ||
8a55ffb0 | 1603 | static enum target_xfer_status |
1e3ff5ad AC |
1604 | target_write_partial (struct target_ops *ops, |
1605 | enum target_object object, | |
1b0ba102 | 1606 | const char *annex, const gdb_byte *buf, |
9b409511 | 1607 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len) |
1e3ff5ad | 1608 | { |
9b409511 YQ |
1609 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len, |
1610 | xfered_len); | |
1e3ff5ad AC |
1611 | } |
1612 | ||
1613 | /* Wrappers to perform the full transfer. */ | |
7f79c47e DE |
1614 | |
1615 | /* For docs on target_read see target.h. */ | |
1616 | ||
1e3ff5ad AC |
1617 | LONGEST |
1618 | target_read (struct target_ops *ops, | |
1619 | enum target_object object, | |
1b0ba102 | 1620 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1621 | ULONGEST offset, LONGEST len) |
1622 | { | |
1623 | LONGEST xfered = 0; | |
5d502164 | 1624 | |
1e3ff5ad AC |
1625 | while (xfered < len) |
1626 | { | |
9b409511 YQ |
1627 | ULONGEST xfered_len; |
1628 | enum target_xfer_status status; | |
1629 | ||
1630 | status = target_read_partial (ops, object, annex, | |
1631 | (gdb_byte *) buf + xfered, | |
1632 | offset + xfered, len - xfered, | |
1633 | &xfered_len); | |
5d502164 | 1634 | |
1e3ff5ad | 1635 | /* Call an observer, notifying them of the xfer progress? */ |
9b409511 | 1636 | if (status == TARGET_XFER_EOF) |
13547ab6 | 1637 | return xfered; |
9b409511 YQ |
1638 | else if (status == TARGET_XFER_OK) |
1639 | { | |
1640 | xfered += xfered_len; | |
1641 | QUIT; | |
1642 | } | |
1643 | else | |
0088c768 | 1644 | return -1; |
9b409511 | 1645 | |
1e3ff5ad AC |
1646 | } |
1647 | return len; | |
1648 | } | |
1649 | ||
f1a507a1 JB |
1650 | /* Assuming that the entire [begin, end) range of memory cannot be |
1651 | read, try to read whatever subrange is possible to read. | |
1652 | ||
1653 | The function returns, in RESULT, either zero or one memory block. | |
1654 | If there's a readable subrange at the beginning, it is completely | |
1655 | read and returned. Any further readable subrange will not be read. | |
1656 | Otherwise, if there's a readable subrange at the end, it will be | |
1657 | completely read and returned. Any readable subranges before it | |
1658 | (obviously, not starting at the beginning), will be ignored. In | |
1659 | other cases -- either no readable subrange, or readable subrange(s) | |
1660 | that is neither at the beginning, or end, nothing is returned. | |
1661 | ||
1662 | The purpose of this function is to handle a read across a boundary | |
1663 | of accessible memory in a case when memory map is not available. | |
1664 | The above restrictions are fine for this case, but will give | |
1665 | incorrect results if the memory is 'patchy'. However, supporting | |
1666 | 'patchy' memory would require trying to read every single byte, | |
1667 | and it seems unacceptable solution. Explicit memory map is | |
1668 | recommended for this case -- and target_read_memory_robust will | |
1669 | take care of reading multiple ranges then. */ | |
8dedea02 VP |
1670 | |
1671 | static void | |
3e43a32a MS |
1672 | read_whatever_is_readable (struct target_ops *ops, |
1673 | ULONGEST begin, ULONGEST end, | |
8dedea02 | 1674 | VEC(memory_read_result_s) **result) |
d5086790 | 1675 | { |
f1a507a1 | 1676 | gdb_byte *buf = xmalloc (end - begin); |
8dedea02 VP |
1677 | ULONGEST current_begin = begin; |
1678 | ULONGEST current_end = end; | |
1679 | int forward; | |
1680 | memory_read_result_s r; | |
9b409511 | 1681 | ULONGEST xfered_len; |
8dedea02 VP |
1682 | |
1683 | /* If we previously failed to read 1 byte, nothing can be done here. */ | |
1684 | if (end - begin <= 1) | |
13b3fd9b MS |
1685 | { |
1686 | xfree (buf); | |
1687 | return; | |
1688 | } | |
8dedea02 VP |
1689 | |
1690 | /* Check that either first or the last byte is readable, and give up | |
c378eb4e | 1691 | if not. This heuristic is meant to permit reading accessible memory |
8dedea02 VP |
1692 | at the boundary of accessible region. */ |
1693 | if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 | 1694 | buf, begin, 1, &xfered_len) == TARGET_XFER_OK) |
8dedea02 VP |
1695 | { |
1696 | forward = 1; | |
1697 | ++current_begin; | |
1698 | } | |
1699 | else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 YQ |
1700 | buf + (end-begin) - 1, end - 1, 1, |
1701 | &xfered_len) == TARGET_XFER_OK) | |
8dedea02 VP |
1702 | { |
1703 | forward = 0; | |
1704 | --current_end; | |
1705 | } | |
1706 | else | |
1707 | { | |
13b3fd9b | 1708 | xfree (buf); |
8dedea02 VP |
1709 | return; |
1710 | } | |
1711 | ||
1712 | /* Loop invariant is that the [current_begin, current_end) was previously | |
1713 | found to be not readable as a whole. | |
1714 | ||
1715 | Note loop condition -- if the range has 1 byte, we can't divide the range | |
1716 | so there's no point trying further. */ | |
1717 | while (current_end - current_begin > 1) | |
1718 | { | |
1719 | ULONGEST first_half_begin, first_half_end; | |
1720 | ULONGEST second_half_begin, second_half_end; | |
1721 | LONGEST xfer; | |
8dedea02 | 1722 | ULONGEST middle = current_begin + (current_end - current_begin)/2; |
f1a507a1 | 1723 | |
8dedea02 VP |
1724 | if (forward) |
1725 | { | |
1726 | first_half_begin = current_begin; | |
1727 | first_half_end = middle; | |
1728 | second_half_begin = middle; | |
1729 | second_half_end = current_end; | |
1730 | } | |
1731 | else | |
1732 | { | |
1733 | first_half_begin = middle; | |
1734 | first_half_end = current_end; | |
1735 | second_half_begin = current_begin; | |
1736 | second_half_end = middle; | |
1737 | } | |
1738 | ||
1739 | xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
1740 | buf + (first_half_begin - begin), | |
1741 | first_half_begin, | |
1742 | first_half_end - first_half_begin); | |
1743 | ||
1744 | if (xfer == first_half_end - first_half_begin) | |
1745 | { | |
c378eb4e | 1746 | /* This half reads up fine. So, the error must be in the |
3e43a32a | 1747 | other half. */ |
8dedea02 VP |
1748 | current_begin = second_half_begin; |
1749 | current_end = second_half_end; | |
1750 | } | |
1751 | else | |
1752 | { | |
c378eb4e MS |
1753 | /* This half is not readable. Because we've tried one byte, we |
1754 | know some part of this half if actually redable. Go to the next | |
8dedea02 VP |
1755 | iteration to divide again and try to read. |
1756 | ||
1757 | We don't handle the other half, because this function only tries | |
1758 | to read a single readable subrange. */ | |
1759 | current_begin = first_half_begin; | |
1760 | current_end = first_half_end; | |
1761 | } | |
1762 | } | |
1763 | ||
1764 | if (forward) | |
1765 | { | |
1766 | /* The [begin, current_begin) range has been read. */ | |
1767 | r.begin = begin; | |
1768 | r.end = current_begin; | |
1769 | r.data = buf; | |
1770 | } | |
1771 | else | |
1772 | { | |
1773 | /* The [current_end, end) range has been read. */ | |
1774 | LONGEST rlen = end - current_end; | |
f1a507a1 | 1775 | |
8dedea02 VP |
1776 | r.data = xmalloc (rlen); |
1777 | memcpy (r.data, buf + current_end - begin, rlen); | |
1778 | r.begin = current_end; | |
1779 | r.end = end; | |
1780 | xfree (buf); | |
1781 | } | |
1782 | VEC_safe_push(memory_read_result_s, (*result), &r); | |
1783 | } | |
1784 | ||
1785 | void | |
1786 | free_memory_read_result_vector (void *x) | |
1787 | { | |
1788 | VEC(memory_read_result_s) *v = x; | |
1789 | memory_read_result_s *current; | |
1790 | int ix; | |
1791 | ||
1792 | for (ix = 0; VEC_iterate (memory_read_result_s, v, ix, current); ++ix) | |
1793 | { | |
1794 | xfree (current->data); | |
1795 | } | |
1796 | VEC_free (memory_read_result_s, v); | |
1797 | } | |
1798 | ||
1799 | VEC(memory_read_result_s) * | |
1800 | read_memory_robust (struct target_ops *ops, ULONGEST offset, LONGEST len) | |
1801 | { | |
1802 | VEC(memory_read_result_s) *result = 0; | |
1803 | ||
1804 | LONGEST xfered = 0; | |
d5086790 VP |
1805 | while (xfered < len) |
1806 | { | |
8dedea02 VP |
1807 | struct mem_region *region = lookup_mem_region (offset + xfered); |
1808 | LONGEST rlen; | |
5d502164 | 1809 | |
8dedea02 VP |
1810 | /* If there is no explicit region, a fake one should be created. */ |
1811 | gdb_assert (region); | |
1812 | ||
1813 | if (region->hi == 0) | |
1814 | rlen = len - xfered; | |
1815 | else | |
1816 | rlen = region->hi - offset; | |
1817 | ||
1818 | if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO) | |
d5086790 | 1819 | { |
c378eb4e | 1820 | /* Cannot read this region. Note that we can end up here only |
8dedea02 VP |
1821 | if the region is explicitly marked inaccessible, or |
1822 | 'inaccessible-by-default' is in effect. */ | |
1823 | xfered += rlen; | |
1824 | } | |
1825 | else | |
1826 | { | |
1827 | LONGEST to_read = min (len - xfered, rlen); | |
1828 | gdb_byte *buffer = (gdb_byte *)xmalloc (to_read); | |
1829 | ||
1830 | LONGEST xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
1831 | (gdb_byte *) buffer, | |
1832 | offset + xfered, to_read); | |
1833 | /* Call an observer, notifying them of the xfer progress? */ | |
d5086790 | 1834 | if (xfer <= 0) |
d5086790 | 1835 | { |
c378eb4e | 1836 | /* Got an error reading full chunk. See if maybe we can read |
8dedea02 VP |
1837 | some subrange. */ |
1838 | xfree (buffer); | |
3e43a32a MS |
1839 | read_whatever_is_readable (ops, offset + xfered, |
1840 | offset + xfered + to_read, &result); | |
8dedea02 | 1841 | xfered += to_read; |
d5086790 | 1842 | } |
8dedea02 VP |
1843 | else |
1844 | { | |
1845 | struct memory_read_result r; | |
1846 | r.data = buffer; | |
1847 | r.begin = offset + xfered; | |
1848 | r.end = r.begin + xfer; | |
1849 | VEC_safe_push (memory_read_result_s, result, &r); | |
1850 | xfered += xfer; | |
1851 | } | |
1852 | QUIT; | |
d5086790 | 1853 | } |
d5086790 | 1854 | } |
8dedea02 | 1855 | return result; |
d5086790 VP |
1856 | } |
1857 | ||
8dedea02 | 1858 | |
cf7a04e8 DJ |
1859 | /* An alternative to target_write with progress callbacks. */ |
1860 | ||
1e3ff5ad | 1861 | LONGEST |
cf7a04e8 DJ |
1862 | target_write_with_progress (struct target_ops *ops, |
1863 | enum target_object object, | |
1864 | const char *annex, const gdb_byte *buf, | |
1865 | ULONGEST offset, LONGEST len, | |
1866 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad AC |
1867 | { |
1868 | LONGEST xfered = 0; | |
a76d924d DJ |
1869 | |
1870 | /* Give the progress callback a chance to set up. */ | |
1871 | if (progress) | |
1872 | (*progress) (0, baton); | |
1873 | ||
1e3ff5ad AC |
1874 | while (xfered < len) |
1875 | { | |
9b409511 YQ |
1876 | ULONGEST xfered_len; |
1877 | enum target_xfer_status status; | |
1878 | ||
1879 | status = target_write_partial (ops, object, annex, | |
1880 | (gdb_byte *) buf + xfered, | |
1881 | offset + xfered, len - xfered, | |
1882 | &xfered_len); | |
cf7a04e8 | 1883 | |
5c328c05 YQ |
1884 | if (status != TARGET_XFER_OK) |
1885 | return status == TARGET_XFER_EOF ? xfered : -1; | |
cf7a04e8 DJ |
1886 | |
1887 | if (progress) | |
9b409511 | 1888 | (*progress) (xfered_len, baton); |
cf7a04e8 | 1889 | |
9b409511 | 1890 | xfered += xfered_len; |
1e3ff5ad AC |
1891 | QUIT; |
1892 | } | |
1893 | return len; | |
1894 | } | |
1895 | ||
7f79c47e DE |
1896 | /* For docs on target_write see target.h. */ |
1897 | ||
cf7a04e8 DJ |
1898 | LONGEST |
1899 | target_write (struct target_ops *ops, | |
1900 | enum target_object object, | |
1901 | const char *annex, const gdb_byte *buf, | |
1902 | ULONGEST offset, LONGEST len) | |
1903 | { | |
1904 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
1905 | NULL, NULL); | |
1906 | } | |
1907 | ||
159f81f3 DJ |
1908 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
1909 | the size of the transferred data. PADDING additional bytes are | |
1910 | available in *BUF_P. This is a helper function for | |
1911 | target_read_alloc; see the declaration of that function for more | |
1912 | information. */ | |
13547ab6 | 1913 | |
159f81f3 DJ |
1914 | static LONGEST |
1915 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, | |
1916 | const char *annex, gdb_byte **buf_p, int padding) | |
13547ab6 DJ |
1917 | { |
1918 | size_t buf_alloc, buf_pos; | |
1919 | gdb_byte *buf; | |
13547ab6 DJ |
1920 | |
1921 | /* This function does not have a length parameter; it reads the | |
1922 | entire OBJECT). Also, it doesn't support objects fetched partly | |
1923 | from one target and partly from another (in a different stratum, | |
1924 | e.g. a core file and an executable). Both reasons make it | |
1925 | unsuitable for reading memory. */ | |
1926 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
1927 | ||
1928 | /* Start by reading up to 4K at a time. The target will throttle | |
1929 | this number down if necessary. */ | |
1930 | buf_alloc = 4096; | |
1931 | buf = xmalloc (buf_alloc); | |
1932 | buf_pos = 0; | |
1933 | while (1) | |
1934 | { | |
9b409511 YQ |
1935 | ULONGEST xfered_len; |
1936 | enum target_xfer_status status; | |
1937 | ||
1938 | status = target_read_partial (ops, object, annex, &buf[buf_pos], | |
1939 | buf_pos, buf_alloc - buf_pos - padding, | |
1940 | &xfered_len); | |
1941 | ||
1942 | if (status == TARGET_XFER_EOF) | |
13547ab6 DJ |
1943 | { |
1944 | /* Read all there was. */ | |
1945 | if (buf_pos == 0) | |
1946 | xfree (buf); | |
1947 | else | |
1948 | *buf_p = buf; | |
1949 | return buf_pos; | |
1950 | } | |
9b409511 YQ |
1951 | else if (status != TARGET_XFER_OK) |
1952 | { | |
1953 | /* An error occurred. */ | |
1954 | xfree (buf); | |
1955 | return TARGET_XFER_E_IO; | |
1956 | } | |
13547ab6 | 1957 | |
9b409511 | 1958 | buf_pos += xfered_len; |
13547ab6 DJ |
1959 | |
1960 | /* If the buffer is filling up, expand it. */ | |
1961 | if (buf_alloc < buf_pos * 2) | |
1962 | { | |
1963 | buf_alloc *= 2; | |
1964 | buf = xrealloc (buf, buf_alloc); | |
1965 | } | |
1966 | ||
1967 | QUIT; | |
1968 | } | |
1969 | } | |
1970 | ||
159f81f3 DJ |
1971 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
1972 | the size of the transferred data. See the declaration in "target.h" | |
1973 | function for more information about the return value. */ | |
1974 | ||
1975 | LONGEST | |
1976 | target_read_alloc (struct target_ops *ops, enum target_object object, | |
1977 | const char *annex, gdb_byte **buf_p) | |
1978 | { | |
1979 | return target_read_alloc_1 (ops, object, annex, buf_p, 0); | |
1980 | } | |
1981 | ||
1982 | /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and | |
1983 | returned as a string, allocated using xmalloc. If an error occurs | |
1984 | or the transfer is unsupported, NULL is returned. Empty objects | |
1985 | are returned as allocated but empty strings. A warning is issued | |
1986 | if the result contains any embedded NUL bytes. */ | |
1987 | ||
1988 | char * | |
1989 | target_read_stralloc (struct target_ops *ops, enum target_object object, | |
1990 | const char *annex) | |
1991 | { | |
39086a0e PA |
1992 | gdb_byte *buffer; |
1993 | char *bufstr; | |
7313baad | 1994 | LONGEST i, transferred; |
159f81f3 | 1995 | |
39086a0e PA |
1996 | transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1); |
1997 | bufstr = (char *) buffer; | |
159f81f3 DJ |
1998 | |
1999 | if (transferred < 0) | |
2000 | return NULL; | |
2001 | ||
2002 | if (transferred == 0) | |
2003 | return xstrdup (""); | |
2004 | ||
39086a0e | 2005 | bufstr[transferred] = 0; |
7313baad UW |
2006 | |
2007 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
39086a0e PA |
2008 | for (i = strlen (bufstr); i < transferred; i++) |
2009 | if (bufstr[i] != 0) | |
7313baad UW |
2010 | { |
2011 | warning (_("target object %d, annex %s, " | |
2012 | "contained unexpected null characters"), | |
2013 | (int) object, annex ? annex : "(none)"); | |
2014 | break; | |
2015 | } | |
159f81f3 | 2016 | |
39086a0e | 2017 | return bufstr; |
159f81f3 DJ |
2018 | } |
2019 | ||
b6591e8b AC |
2020 | /* Memory transfer methods. */ |
2021 | ||
2022 | void | |
1b0ba102 | 2023 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
2024 | LONGEST len) |
2025 | { | |
07b82ea5 PA |
2026 | /* This method is used to read from an alternate, non-current |
2027 | target. This read must bypass the overlay support (as symbols | |
2028 | don't match this target), and GDB's internal cache (wrong cache | |
2029 | for this target). */ | |
2030 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) | |
b6591e8b | 2031 | != len) |
578d3588 | 2032 | memory_error (TARGET_XFER_E_IO, addr); |
b6591e8b AC |
2033 | } |
2034 | ||
2035 | ULONGEST | |
5d502164 MS |
2036 | get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr, |
2037 | int len, enum bfd_endian byte_order) | |
b6591e8b | 2038 | { |
f6519ebc | 2039 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
2040 | |
2041 | gdb_assert (len <= sizeof (buf)); | |
2042 | get_target_memory (ops, addr, buf, len); | |
e17a4113 | 2043 | return extract_unsigned_integer (buf, len, byte_order); |
b6591e8b AC |
2044 | } |
2045 | ||
3db08215 MM |
2046 | /* See target.h. */ |
2047 | ||
d914c394 SS |
2048 | int |
2049 | target_insert_breakpoint (struct gdbarch *gdbarch, | |
2050 | struct bp_target_info *bp_tgt) | |
2051 | { | |
2052 | if (!may_insert_breakpoints) | |
2053 | { | |
2054 | warning (_("May not insert breakpoints")); | |
2055 | return 1; | |
2056 | } | |
2057 | ||
6b84065d TT |
2058 | return current_target.to_insert_breakpoint (¤t_target, |
2059 | gdbarch, bp_tgt); | |
d914c394 SS |
2060 | } |
2061 | ||
3db08215 MM |
2062 | /* See target.h. */ |
2063 | ||
d914c394 | 2064 | int |
6b84065d TT |
2065 | target_remove_breakpoint (struct gdbarch *gdbarch, |
2066 | struct bp_target_info *bp_tgt) | |
d914c394 SS |
2067 | { |
2068 | /* This is kind of a weird case to handle, but the permission might | |
2069 | have been changed after breakpoints were inserted - in which case | |
2070 | we should just take the user literally and assume that any | |
2071 | breakpoints should be left in place. */ | |
2072 | if (!may_insert_breakpoints) | |
2073 | { | |
2074 | warning (_("May not remove breakpoints")); | |
2075 | return 1; | |
2076 | } | |
2077 | ||
6b84065d TT |
2078 | return current_target.to_remove_breakpoint (¤t_target, |
2079 | gdbarch, bp_tgt); | |
d914c394 SS |
2080 | } |
2081 | ||
c906108c | 2082 | static void |
fba45db2 | 2083 | target_info (char *args, int from_tty) |
c906108c SS |
2084 | { |
2085 | struct target_ops *t; | |
c906108c | 2086 | int has_all_mem = 0; |
c5aa993b | 2087 | |
c906108c | 2088 | if (symfile_objfile != NULL) |
4262abfb JK |
2089 | printf_unfiltered (_("Symbols from \"%s\".\n"), |
2090 | objfile_name (symfile_objfile)); | |
c906108c | 2091 | |
258b763a | 2092 | for (t = target_stack; t != NULL; t = t->beneath) |
c906108c | 2093 | { |
c35b1492 | 2094 | if (!(*t->to_has_memory) (t)) |
c906108c SS |
2095 | continue; |
2096 | ||
c5aa993b | 2097 | if ((int) (t->to_stratum) <= (int) dummy_stratum) |
c906108c SS |
2098 | continue; |
2099 | if (has_all_mem) | |
3e43a32a MS |
2100 | printf_unfiltered (_("\tWhile running this, " |
2101 | "GDB does not access memory from...\n")); | |
c5aa993b JM |
2102 | printf_unfiltered ("%s:\n", t->to_longname); |
2103 | (t->to_files_info) (t); | |
c35b1492 | 2104 | has_all_mem = (*t->to_has_all_memory) (t); |
c906108c SS |
2105 | } |
2106 | } | |
2107 | ||
fd79ecee DJ |
2108 | /* This function is called before any new inferior is created, e.g. |
2109 | by running a program, attaching, or connecting to a target. | |
2110 | It cleans up any state from previous invocations which might | |
2111 | change between runs. This is a subset of what target_preopen | |
2112 | resets (things which might change between targets). */ | |
2113 | ||
2114 | void | |
2115 | target_pre_inferior (int from_tty) | |
2116 | { | |
c378eb4e | 2117 | /* Clear out solib state. Otherwise the solib state of the previous |
b9db4ced | 2118 | inferior might have survived and is entirely wrong for the new |
c378eb4e | 2119 | target. This has been observed on GNU/Linux using glibc 2.3. How |
b9db4ced UW |
2120 | to reproduce: |
2121 | ||
2122 | bash$ ./foo& | |
2123 | [1] 4711 | |
2124 | bash$ ./foo& | |
2125 | [1] 4712 | |
2126 | bash$ gdb ./foo | |
2127 | [...] | |
2128 | (gdb) attach 4711 | |
2129 | (gdb) detach | |
2130 | (gdb) attach 4712 | |
2131 | Cannot access memory at address 0xdeadbeef | |
2132 | */ | |
b9db4ced | 2133 | |
50c71eaf PA |
2134 | /* In some OSs, the shared library list is the same/global/shared |
2135 | across inferiors. If code is shared between processes, so are | |
2136 | memory regions and features. */ | |
f5656ead | 2137 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
50c71eaf PA |
2138 | { |
2139 | no_shared_libraries (NULL, from_tty); | |
2140 | ||
2141 | invalidate_target_mem_regions (); | |
424163ea | 2142 | |
50c71eaf PA |
2143 | target_clear_description (); |
2144 | } | |
8ffcbaaf YQ |
2145 | |
2146 | agent_capability_invalidate (); | |
fd79ecee DJ |
2147 | } |
2148 | ||
b8fa0bfa PA |
2149 | /* Callback for iterate_over_inferiors. Gets rid of the given |
2150 | inferior. */ | |
2151 | ||
2152 | static int | |
2153 | dispose_inferior (struct inferior *inf, void *args) | |
2154 | { | |
2155 | struct thread_info *thread; | |
2156 | ||
2157 | thread = any_thread_of_process (inf->pid); | |
2158 | if (thread) | |
2159 | { | |
2160 | switch_to_thread (thread->ptid); | |
2161 | ||
2162 | /* Core inferiors actually should be detached, not killed. */ | |
2163 | if (target_has_execution) | |
2164 | target_kill (); | |
2165 | else | |
2166 | target_detach (NULL, 0); | |
2167 | } | |
2168 | ||
2169 | return 0; | |
2170 | } | |
2171 | ||
c906108c SS |
2172 | /* This is to be called by the open routine before it does |
2173 | anything. */ | |
2174 | ||
2175 | void | |
fba45db2 | 2176 | target_preopen (int from_tty) |
c906108c | 2177 | { |
c5aa993b | 2178 | dont_repeat (); |
c906108c | 2179 | |
b8fa0bfa | 2180 | if (have_inferiors ()) |
c5aa993b | 2181 | { |
adf40b2e | 2182 | if (!from_tty |
b8fa0bfa PA |
2183 | || !have_live_inferiors () |
2184 | || query (_("A program is being debugged already. Kill it? "))) | |
2185 | iterate_over_inferiors (dispose_inferior, NULL); | |
c906108c | 2186 | else |
8a3fe4f8 | 2187 | error (_("Program not killed.")); |
c906108c SS |
2188 | } |
2189 | ||
2190 | /* Calling target_kill may remove the target from the stack. But if | |
2191 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
2192 | /* Leave the exec target, though. The user may be switching from a |
2193 | live process to a core of the same program. */ | |
460014f5 | 2194 | pop_all_targets_above (file_stratum); |
fd79ecee DJ |
2195 | |
2196 | target_pre_inferior (from_tty); | |
c906108c SS |
2197 | } |
2198 | ||
2199 | /* Detach a target after doing deferred register stores. */ | |
2200 | ||
2201 | void | |
52554a0e | 2202 | target_detach (const char *args, int from_tty) |
c906108c | 2203 | { |
136d6dae VP |
2204 | struct target_ops* t; |
2205 | ||
f5656ead | 2206 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
2207 | /* Don't remove global breakpoints here. They're removed on |
2208 | disconnection from the target. */ | |
2209 | ; | |
2210 | else | |
2211 | /* If we're in breakpoints-always-inserted mode, have to remove | |
2212 | them before detaching. */ | |
dfd4cc63 | 2213 | remove_breakpoints_pid (ptid_get_pid (inferior_ptid)); |
74960c60 | 2214 | |
24291992 PA |
2215 | prepare_for_detach (); |
2216 | ||
09da0d0a TT |
2217 | current_target.to_detach (¤t_target, args, from_tty); |
2218 | if (targetdebug) | |
2219 | fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n", | |
2220 | args, from_tty); | |
c906108c SS |
2221 | } |
2222 | ||
6ad8ae5c DJ |
2223 | void |
2224 | target_disconnect (char *args, int from_tty) | |
2225 | { | |
50c71eaf PA |
2226 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
2227 | are global across processes, we have to remove them before | |
2228 | disconnecting. */ | |
74960c60 VP |
2229 | remove_breakpoints (); |
2230 | ||
86a0854a TT |
2231 | if (targetdebug) |
2232 | fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n", | |
2233 | args, from_tty); | |
2234 | current_target.to_disconnect (¤t_target, args, from_tty); | |
6ad8ae5c DJ |
2235 | } |
2236 | ||
117de6a9 | 2237 | ptid_t |
47608cb1 | 2238 | target_wait (ptid_t ptid, struct target_waitstatus *status, int options) |
117de6a9 PA |
2239 | { |
2240 | struct target_ops *t; | |
6b84065d TT |
2241 | ptid_t retval = (current_target.to_wait) (¤t_target, ptid, |
2242 | status, options); | |
117de6a9 | 2243 | |
6b84065d | 2244 | if (targetdebug) |
117de6a9 | 2245 | { |
6b84065d TT |
2246 | char *status_string; |
2247 | char *options_string; | |
117de6a9 | 2248 | |
6b84065d TT |
2249 | status_string = target_waitstatus_to_string (status); |
2250 | options_string = target_options_to_string (options); | |
2251 | fprintf_unfiltered (gdb_stdlog, | |
2252 | "target_wait (%d, status, options={%s})" | |
2253 | " = %d, %s\n", | |
2254 | ptid_get_pid (ptid), options_string, | |
2255 | ptid_get_pid (retval), status_string); | |
2256 | xfree (status_string); | |
2257 | xfree (options_string); | |
117de6a9 PA |
2258 | } |
2259 | ||
6b84065d | 2260 | return retval; |
117de6a9 PA |
2261 | } |
2262 | ||
2263 | char * | |
2264 | target_pid_to_str (ptid_t ptid) | |
2265 | { | |
770234d3 | 2266 | return (*current_target.to_pid_to_str) (¤t_target, ptid); |
117de6a9 PA |
2267 | } |
2268 | ||
4694da01 TT |
2269 | char * |
2270 | target_thread_name (struct thread_info *info) | |
2271 | { | |
825828fc | 2272 | return current_target.to_thread_name (¤t_target, info); |
4694da01 TT |
2273 | } |
2274 | ||
e1ac3328 | 2275 | void |
2ea28649 | 2276 | target_resume (ptid_t ptid, int step, enum gdb_signal signal) |
e1ac3328 | 2277 | { |
28439f5e PA |
2278 | struct target_ops *t; |
2279 | ||
4e5d721f | 2280 | target_dcache_invalidate (); |
28439f5e | 2281 | |
6b84065d TT |
2282 | current_target.to_resume (¤t_target, ptid, step, signal); |
2283 | if (targetdebug) | |
2284 | fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n", | |
2285 | ptid_get_pid (ptid), | |
2286 | step ? "step" : "continue", | |
2287 | gdb_signal_to_name (signal)); | |
28439f5e | 2288 | |
6b84065d TT |
2289 | registers_changed_ptid (ptid); |
2290 | set_executing (ptid, 1); | |
2291 | set_running (ptid, 1); | |
2292 | clear_inline_frame_state (ptid); | |
e1ac3328 | 2293 | } |
2455069d UW |
2294 | |
2295 | void | |
2296 | target_pass_signals (int numsigs, unsigned char *pass_signals) | |
2297 | { | |
035cad7f | 2298 | if (targetdebug) |
2455069d | 2299 | { |
035cad7f | 2300 | int i; |
2455069d | 2301 | |
035cad7f TT |
2302 | fprintf_unfiltered (gdb_stdlog, "target_pass_signals (%d, {", |
2303 | numsigs); | |
2455069d | 2304 | |
035cad7f TT |
2305 | for (i = 0; i < numsigs; i++) |
2306 | if (pass_signals[i]) | |
2307 | fprintf_unfiltered (gdb_stdlog, " %s", | |
2308 | gdb_signal_to_name (i)); | |
2455069d | 2309 | |
035cad7f | 2310 | fprintf_unfiltered (gdb_stdlog, " })\n"); |
2455069d | 2311 | } |
035cad7f TT |
2312 | |
2313 | (*current_target.to_pass_signals) (¤t_target, numsigs, pass_signals); | |
2455069d UW |
2314 | } |
2315 | ||
9b224c5e PA |
2316 | void |
2317 | target_program_signals (int numsigs, unsigned char *program_signals) | |
2318 | { | |
7d4f8efa | 2319 | if (targetdebug) |
9b224c5e | 2320 | { |
7d4f8efa | 2321 | int i; |
9b224c5e | 2322 | |
7d4f8efa TT |
2323 | fprintf_unfiltered (gdb_stdlog, "target_program_signals (%d, {", |
2324 | numsigs); | |
9b224c5e | 2325 | |
7d4f8efa TT |
2326 | for (i = 0; i < numsigs; i++) |
2327 | if (program_signals[i]) | |
2328 | fprintf_unfiltered (gdb_stdlog, " %s", | |
2329 | gdb_signal_to_name (i)); | |
9b224c5e | 2330 | |
7d4f8efa | 2331 | fprintf_unfiltered (gdb_stdlog, " })\n"); |
9b224c5e | 2332 | } |
7d4f8efa TT |
2333 | |
2334 | (*current_target.to_program_signals) (¤t_target, | |
2335 | numsigs, program_signals); | |
9b224c5e PA |
2336 | } |
2337 | ||
098dba18 TT |
2338 | static int |
2339 | default_follow_fork (struct target_ops *self, int follow_child, | |
2340 | int detach_fork) | |
2341 | { | |
2342 | /* Some target returned a fork event, but did not know how to follow it. */ | |
2343 | internal_error (__FILE__, __LINE__, | |
2344 | _("could not find a target to follow fork")); | |
2345 | } | |
2346 | ||
ee057212 DJ |
2347 | /* Look through the list of possible targets for a target that can |
2348 | follow forks. */ | |
2349 | ||
2350 | int | |
07107ca6 | 2351 | target_follow_fork (int follow_child, int detach_fork) |
ee057212 | 2352 | { |
098dba18 TT |
2353 | int retval = current_target.to_follow_fork (¤t_target, |
2354 | follow_child, detach_fork); | |
ee057212 | 2355 | |
098dba18 TT |
2356 | if (targetdebug) |
2357 | fprintf_unfiltered (gdb_stdlog, | |
2358 | "target_follow_fork (%d, %d) = %d\n", | |
2359 | follow_child, detach_fork, retval); | |
2360 | return retval; | |
ee057212 DJ |
2361 | } |
2362 | ||
8d657035 TT |
2363 | static void |
2364 | default_mourn_inferior (struct target_ops *self) | |
2365 | { | |
2366 | internal_error (__FILE__, __LINE__, | |
2367 | _("could not find a target to follow mourn inferior")); | |
2368 | } | |
2369 | ||
136d6dae VP |
2370 | void |
2371 | target_mourn_inferior (void) | |
2372 | { | |
8d657035 TT |
2373 | current_target.to_mourn_inferior (¤t_target); |
2374 | if (targetdebug) | |
2375 | fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n"); | |
136d6dae | 2376 | |
8d657035 TT |
2377 | /* We no longer need to keep handles on any of the object files. |
2378 | Make sure to release them to avoid unnecessarily locking any | |
2379 | of them while we're not actually debugging. */ | |
2380 | bfd_cache_close_all (); | |
136d6dae VP |
2381 | } |
2382 | ||
424163ea DJ |
2383 | /* Look for a target which can describe architectural features, starting |
2384 | from TARGET. If we find one, return its description. */ | |
2385 | ||
2386 | const struct target_desc * | |
2387 | target_read_description (struct target_ops *target) | |
2388 | { | |
2117c711 | 2389 | return target->to_read_description (target); |
424163ea DJ |
2390 | } |
2391 | ||
58a5184e | 2392 | /* This implements a basic search of memory, reading target memory and |
08388c79 DE |
2393 | performing the search here (as opposed to performing the search in on the |
2394 | target side with, for example, gdbserver). */ | |
2395 | ||
2396 | int | |
2397 | simple_search_memory (struct target_ops *ops, | |
2398 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2399 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2400 | CORE_ADDR *found_addrp) | |
2401 | { | |
2402 | /* NOTE: also defined in find.c testcase. */ | |
2403 | #define SEARCH_CHUNK_SIZE 16000 | |
2404 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
2405 | /* Buffer to hold memory contents for searching. */ | |
2406 | gdb_byte *search_buf; | |
2407 | unsigned search_buf_size; | |
2408 | struct cleanup *old_cleanups; | |
2409 | ||
2410 | search_buf_size = chunk_size + pattern_len - 1; | |
2411 | ||
2412 | /* No point in trying to allocate a buffer larger than the search space. */ | |
2413 | if (search_space_len < search_buf_size) | |
2414 | search_buf_size = search_space_len; | |
2415 | ||
2416 | search_buf = malloc (search_buf_size); | |
2417 | if (search_buf == NULL) | |
5e1471f5 | 2418 | error (_("Unable to allocate memory to perform the search.")); |
08388c79 DE |
2419 | old_cleanups = make_cleanup (free_current_contents, &search_buf); |
2420 | ||
2421 | /* Prime the search buffer. */ | |
2422 | ||
2423 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2424 | search_buf, start_addr, search_buf_size) != search_buf_size) | |
2425 | { | |
b3dc46ff AB |
2426 | warning (_("Unable to access %s bytes of target " |
2427 | "memory at %s, halting search."), | |
2428 | pulongest (search_buf_size), hex_string (start_addr)); | |
08388c79 DE |
2429 | do_cleanups (old_cleanups); |
2430 | return -1; | |
2431 | } | |
2432 | ||
2433 | /* Perform the search. | |
2434 | ||
2435 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
2436 | When we've scanned N bytes we copy the trailing bytes to the start and | |
2437 | read in another N bytes. */ | |
2438 | ||
2439 | while (search_space_len >= pattern_len) | |
2440 | { | |
2441 | gdb_byte *found_ptr; | |
2442 | unsigned nr_search_bytes = min (search_space_len, search_buf_size); | |
2443 | ||
2444 | found_ptr = memmem (search_buf, nr_search_bytes, | |
2445 | pattern, pattern_len); | |
2446 | ||
2447 | if (found_ptr != NULL) | |
2448 | { | |
2449 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
5d502164 | 2450 | |
08388c79 DE |
2451 | *found_addrp = found_addr; |
2452 | do_cleanups (old_cleanups); | |
2453 | return 1; | |
2454 | } | |
2455 | ||
2456 | /* Not found in this chunk, skip to next chunk. */ | |
2457 | ||
2458 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
2459 | if (search_space_len >= chunk_size) | |
2460 | search_space_len -= chunk_size; | |
2461 | else | |
2462 | search_space_len = 0; | |
2463 | ||
2464 | if (search_space_len >= pattern_len) | |
2465 | { | |
2466 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 2467 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
2468 | int nr_to_read; |
2469 | ||
2470 | /* Copy the trailing part of the previous iteration to the front | |
2471 | of the buffer for the next iteration. */ | |
2472 | gdb_assert (keep_len == pattern_len - 1); | |
2473 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
2474 | ||
2475 | nr_to_read = min (search_space_len - keep_len, chunk_size); | |
2476 | ||
2477 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2478 | search_buf + keep_len, read_addr, | |
2479 | nr_to_read) != nr_to_read) | |
2480 | { | |
b3dc46ff | 2481 | warning (_("Unable to access %s bytes of target " |
9b20d036 | 2482 | "memory at %s, halting search."), |
b3dc46ff | 2483 | plongest (nr_to_read), |
08388c79 DE |
2484 | hex_string (read_addr)); |
2485 | do_cleanups (old_cleanups); | |
2486 | return -1; | |
2487 | } | |
2488 | ||
2489 | start_addr += chunk_size; | |
2490 | } | |
2491 | } | |
2492 | ||
2493 | /* Not found. */ | |
2494 | ||
2495 | do_cleanups (old_cleanups); | |
2496 | return 0; | |
2497 | } | |
2498 | ||
58a5184e TT |
2499 | /* Default implementation of memory-searching. */ |
2500 | ||
2501 | static int | |
2502 | default_search_memory (struct target_ops *self, | |
2503 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2504 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2505 | CORE_ADDR *found_addrp) | |
2506 | { | |
2507 | /* Start over from the top of the target stack. */ | |
2508 | return simple_search_memory (current_target.beneath, | |
2509 | start_addr, search_space_len, | |
2510 | pattern, pattern_len, found_addrp); | |
2511 | } | |
2512 | ||
08388c79 DE |
2513 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the |
2514 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2515 | ||
2516 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2517 | requiring halting of the search (e.g. memory read error). | |
2518 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2519 | ||
2520 | int | |
2521 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2522 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2523 | CORE_ADDR *found_addrp) | |
2524 | { | |
08388c79 DE |
2525 | int found; |
2526 | ||
08388c79 DE |
2527 | if (targetdebug) |
2528 | fprintf_unfiltered (gdb_stdlog, "target_search_memory (%s, ...)\n", | |
2529 | hex_string (start_addr)); | |
2530 | ||
58a5184e TT |
2531 | found = current_target.to_search_memory (¤t_target, start_addr, |
2532 | search_space_len, | |
2533 | pattern, pattern_len, found_addrp); | |
08388c79 DE |
2534 | |
2535 | if (targetdebug) | |
2536 | fprintf_unfiltered (gdb_stdlog, " = %d\n", found); | |
2537 | ||
2538 | return found; | |
2539 | } | |
2540 | ||
8edfe269 DJ |
2541 | /* Look through the currently pushed targets. If none of them will |
2542 | be able to restart the currently running process, issue an error | |
2543 | message. */ | |
2544 | ||
2545 | void | |
2546 | target_require_runnable (void) | |
2547 | { | |
2548 | struct target_ops *t; | |
2549 | ||
2550 | for (t = target_stack; t != NULL; t = t->beneath) | |
2551 | { | |
2552 | /* If this target knows how to create a new program, then | |
2553 | assume we will still be able to after killing the current | |
2554 | one. Either killing and mourning will not pop T, or else | |
2555 | find_default_run_target will find it again. */ | |
2556 | if (t->to_create_inferior != NULL) | |
2557 | return; | |
2558 | ||
2559 | /* Do not worry about thread_stratum targets that can not | |
2560 | create inferiors. Assume they will be pushed again if | |
2561 | necessary, and continue to the process_stratum. */ | |
85e747d2 UW |
2562 | if (t->to_stratum == thread_stratum |
2563 | || t->to_stratum == arch_stratum) | |
8edfe269 DJ |
2564 | continue; |
2565 | ||
3e43a32a MS |
2566 | error (_("The \"%s\" target does not support \"run\". " |
2567 | "Try \"help target\" or \"continue\"."), | |
8edfe269 DJ |
2568 | t->to_shortname); |
2569 | } | |
2570 | ||
2571 | /* This function is only called if the target is running. In that | |
2572 | case there should have been a process_stratum target and it | |
c378eb4e | 2573 | should either know how to create inferiors, or not... */ |
9b20d036 | 2574 | internal_error (__FILE__, __LINE__, _("No targets found")); |
8edfe269 DJ |
2575 | } |
2576 | ||
c906108c SS |
2577 | /* Look through the list of possible targets for a target that can |
2578 | execute a run or attach command without any other data. This is | |
2579 | used to locate the default process stratum. | |
2580 | ||
5f667f2d PA |
2581 | If DO_MESG is not NULL, the result is always valid (error() is |
2582 | called for errors); else, return NULL on error. */ | |
c906108c SS |
2583 | |
2584 | static struct target_ops * | |
fba45db2 | 2585 | find_default_run_target (char *do_mesg) |
c906108c SS |
2586 | { |
2587 | struct target_ops **t; | |
2588 | struct target_ops *runable = NULL; | |
2589 | int count; | |
2590 | ||
2591 | count = 0; | |
2592 | ||
2593 | for (t = target_structs; t < target_structs + target_struct_size; | |
2594 | ++t) | |
2595 | { | |
e88ef65c | 2596 | if ((*t)->to_can_run != delegate_can_run && target_can_run (*t)) |
c906108c SS |
2597 | { |
2598 | runable = *t; | |
2599 | ++count; | |
2600 | } | |
2601 | } | |
2602 | ||
2603 | if (count != 1) | |
5f667f2d PA |
2604 | { |
2605 | if (do_mesg) | |
2606 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
2607 | else | |
2608 | return NULL; | |
2609 | } | |
c906108c SS |
2610 | |
2611 | return runable; | |
2612 | } | |
2613 | ||
b3ccfe11 | 2614 | /* See target.h. */ |
c906108c | 2615 | |
b3ccfe11 TT |
2616 | struct target_ops * |
2617 | find_attach_target (void) | |
c906108c SS |
2618 | { |
2619 | struct target_ops *t; | |
2620 | ||
b3ccfe11 TT |
2621 | /* If a target on the current stack can attach, use it. */ |
2622 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2623 | { | |
2624 | if (t->to_attach != NULL) | |
2625 | break; | |
2626 | } | |
c906108c | 2627 | |
b3ccfe11 TT |
2628 | /* Otherwise, use the default run target for attaching. */ |
2629 | if (t == NULL) | |
2630 | t = find_default_run_target ("attach"); | |
b84876c2 | 2631 | |
b3ccfe11 | 2632 | return t; |
b84876c2 PA |
2633 | } |
2634 | ||
b3ccfe11 | 2635 | /* See target.h. */ |
b84876c2 | 2636 | |
b3ccfe11 TT |
2637 | struct target_ops * |
2638 | find_run_target (void) | |
9908b566 VP |
2639 | { |
2640 | struct target_ops *t; | |
2641 | ||
b3ccfe11 TT |
2642 | /* If a target on the current stack can attach, use it. */ |
2643 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2644 | { | |
2645 | if (t->to_create_inferior != NULL) | |
2646 | break; | |
2647 | } | |
5d502164 | 2648 | |
b3ccfe11 TT |
2649 | /* Otherwise, use the default run target. */ |
2650 | if (t == NULL) | |
2651 | t = find_default_run_target ("run"); | |
9908b566 | 2652 | |
b3ccfe11 | 2653 | return t; |
9908b566 VP |
2654 | } |
2655 | ||
145b16a9 UW |
2656 | /* Implement the "info proc" command. */ |
2657 | ||
451b7c33 | 2658 | int |
145b16a9 UW |
2659 | target_info_proc (char *args, enum info_proc_what what) |
2660 | { | |
2661 | struct target_ops *t; | |
2662 | ||
2663 | /* If we're already connected to something that can get us OS | |
2664 | related data, use it. Otherwise, try using the native | |
2665 | target. */ | |
2666 | if (current_target.to_stratum >= process_stratum) | |
2667 | t = current_target.beneath; | |
2668 | else | |
2669 | t = find_default_run_target (NULL); | |
2670 | ||
2671 | for (; t != NULL; t = t->beneath) | |
2672 | { | |
2673 | if (t->to_info_proc != NULL) | |
2674 | { | |
2675 | t->to_info_proc (t, args, what); | |
2676 | ||
2677 | if (targetdebug) | |
2678 | fprintf_unfiltered (gdb_stdlog, | |
2679 | "target_info_proc (\"%s\", %d)\n", args, what); | |
2680 | ||
451b7c33 | 2681 | return 1; |
145b16a9 UW |
2682 | } |
2683 | } | |
2684 | ||
451b7c33 | 2685 | return 0; |
145b16a9 UW |
2686 | } |
2687 | ||
03583c20 | 2688 | static int |
2bfc0540 | 2689 | find_default_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
2690 | { |
2691 | struct target_ops *t; | |
2692 | ||
2693 | t = find_default_run_target (NULL); | |
2694 | if (t && t->to_supports_disable_randomization) | |
2bfc0540 | 2695 | return (t->to_supports_disable_randomization) (t); |
03583c20 UW |
2696 | return 0; |
2697 | } | |
2698 | ||
2699 | int | |
2700 | target_supports_disable_randomization (void) | |
2701 | { | |
2702 | struct target_ops *t; | |
2703 | ||
2704 | for (t = ¤t_target; t != NULL; t = t->beneath) | |
2705 | if (t->to_supports_disable_randomization) | |
2bfc0540 | 2706 | return t->to_supports_disable_randomization (t); |
03583c20 UW |
2707 | |
2708 | return 0; | |
2709 | } | |
9908b566 | 2710 | |
07e059b5 VP |
2711 | char * |
2712 | target_get_osdata (const char *type) | |
2713 | { | |
07e059b5 VP |
2714 | struct target_ops *t; |
2715 | ||
739ef7fb PA |
2716 | /* If we're already connected to something that can get us OS |
2717 | related data, use it. Otherwise, try using the native | |
2718 | target. */ | |
2719 | if (current_target.to_stratum >= process_stratum) | |
6d097e65 | 2720 | t = current_target.beneath; |
739ef7fb PA |
2721 | else |
2722 | t = find_default_run_target ("get OS data"); | |
07e059b5 VP |
2723 | |
2724 | if (!t) | |
2725 | return NULL; | |
2726 | ||
6d097e65 | 2727 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
2728 | } |
2729 | ||
6c95b8df PA |
2730 | /* Determine the current address space of thread PTID. */ |
2731 | ||
2732 | struct address_space * | |
2733 | target_thread_address_space (ptid_t ptid) | |
2734 | { | |
c0694254 | 2735 | struct address_space *aspace; |
6c95b8df | 2736 | struct inferior *inf; |
c0694254 PA |
2737 | struct target_ops *t; |
2738 | ||
2739 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2740 | { | |
2741 | if (t->to_thread_address_space != NULL) | |
2742 | { | |
2743 | aspace = t->to_thread_address_space (t, ptid); | |
2744 | gdb_assert (aspace); | |
6c95b8df | 2745 | |
c0694254 PA |
2746 | if (targetdebug) |
2747 | fprintf_unfiltered (gdb_stdlog, | |
2748 | "target_thread_address_space (%s) = %d\n", | |
2749 | target_pid_to_str (ptid), | |
2750 | address_space_num (aspace)); | |
2751 | return aspace; | |
2752 | } | |
2753 | } | |
6c95b8df PA |
2754 | |
2755 | /* Fall-back to the "main" address space of the inferior. */ | |
2756 | inf = find_inferior_pid (ptid_get_pid (ptid)); | |
2757 | ||
2758 | if (inf == NULL || inf->aspace == NULL) | |
3e43a32a | 2759 | internal_error (__FILE__, __LINE__, |
9b20d036 MS |
2760 | _("Can't determine the current " |
2761 | "address space of thread %s\n"), | |
6c95b8df PA |
2762 | target_pid_to_str (ptid)); |
2763 | ||
2764 | return inf->aspace; | |
2765 | } | |
2766 | ||
7313baad UW |
2767 | |
2768 | /* Target file operations. */ | |
2769 | ||
2770 | static struct target_ops * | |
2771 | default_fileio_target (void) | |
2772 | { | |
2773 | /* If we're already connected to something that can perform | |
2774 | file I/O, use it. Otherwise, try using the native target. */ | |
2775 | if (current_target.to_stratum >= process_stratum) | |
2776 | return current_target.beneath; | |
2777 | else | |
2778 | return find_default_run_target ("file I/O"); | |
2779 | } | |
2780 | ||
2781 | /* Open FILENAME on the target, using FLAGS and MODE. Return a | |
2782 | target file descriptor, or -1 if an error occurs (and set | |
2783 | *TARGET_ERRNO). */ | |
2784 | int | |
2785 | target_fileio_open (const char *filename, int flags, int mode, | |
2786 | int *target_errno) | |
2787 | { | |
2788 | struct target_ops *t; | |
2789 | ||
2790 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2791 | { | |
2792 | if (t->to_fileio_open != NULL) | |
2793 | { | |
cd897586 | 2794 | int fd = t->to_fileio_open (t, filename, flags, mode, target_errno); |
7313baad UW |
2795 | |
2796 | if (targetdebug) | |
2797 | fprintf_unfiltered (gdb_stdlog, | |
2798 | "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n", | |
2799 | filename, flags, mode, | |
2800 | fd, fd != -1 ? 0 : *target_errno); | |
2801 | return fd; | |
2802 | } | |
2803 | } | |
2804 | ||
2805 | *target_errno = FILEIO_ENOSYS; | |
2806 | return -1; | |
2807 | } | |
2808 | ||
2809 | /* Write up to LEN bytes from WRITE_BUF to FD on the target. | |
2810 | Return the number of bytes written, or -1 if an error occurs | |
2811 | (and set *TARGET_ERRNO). */ | |
2812 | int | |
2813 | target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
2814 | ULONGEST offset, int *target_errno) | |
2815 | { | |
2816 | struct target_ops *t; | |
2817 | ||
2818 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2819 | { | |
2820 | if (t->to_fileio_pwrite != NULL) | |
2821 | { | |
0d866f62 | 2822 | int ret = t->to_fileio_pwrite (t, fd, write_buf, len, offset, |
7313baad UW |
2823 | target_errno); |
2824 | ||
2825 | if (targetdebug) | |
2826 | fprintf_unfiltered (gdb_stdlog, | |
a71b5a38 | 2827 | "target_fileio_pwrite (%d,...,%d,%s) " |
7313baad | 2828 | "= %d (%d)\n", |
a71b5a38 | 2829 | fd, len, pulongest (offset), |
7313baad UW |
2830 | ret, ret != -1 ? 0 : *target_errno); |
2831 | return ret; | |
2832 | } | |
2833 | } | |
2834 | ||
2835 | *target_errno = FILEIO_ENOSYS; | |
2836 | return -1; | |
2837 | } | |
2838 | ||
2839 | /* Read up to LEN bytes FD on the target into READ_BUF. | |
2840 | Return the number of bytes read, or -1 if an error occurs | |
2841 | (and set *TARGET_ERRNO). */ | |
2842 | int | |
2843 | target_fileio_pread (int fd, gdb_byte *read_buf, int len, | |
2844 | ULONGEST offset, int *target_errno) | |
2845 | { | |
2846 | struct target_ops *t; | |
2847 | ||
2848 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2849 | { | |
2850 | if (t->to_fileio_pread != NULL) | |
2851 | { | |
a3be983c | 2852 | int ret = t->to_fileio_pread (t, fd, read_buf, len, offset, |
7313baad UW |
2853 | target_errno); |
2854 | ||
2855 | if (targetdebug) | |
2856 | fprintf_unfiltered (gdb_stdlog, | |
a71b5a38 | 2857 | "target_fileio_pread (%d,...,%d,%s) " |
7313baad | 2858 | "= %d (%d)\n", |
a71b5a38 | 2859 | fd, len, pulongest (offset), |
7313baad UW |
2860 | ret, ret != -1 ? 0 : *target_errno); |
2861 | return ret; | |
2862 | } | |
2863 | } | |
2864 | ||
2865 | *target_errno = FILEIO_ENOSYS; | |
2866 | return -1; | |
2867 | } | |
2868 | ||
2869 | /* Close FD on the target. Return 0, or -1 if an error occurs | |
2870 | (and set *TARGET_ERRNO). */ | |
2871 | int | |
2872 | target_fileio_close (int fd, int *target_errno) | |
2873 | { | |
2874 | struct target_ops *t; | |
2875 | ||
2876 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2877 | { | |
2878 | if (t->to_fileio_close != NULL) | |
2879 | { | |
df39ea25 | 2880 | int ret = t->to_fileio_close (t, fd, target_errno); |
7313baad UW |
2881 | |
2882 | if (targetdebug) | |
2883 | fprintf_unfiltered (gdb_stdlog, | |
2884 | "target_fileio_close (%d) = %d (%d)\n", | |
2885 | fd, ret, ret != -1 ? 0 : *target_errno); | |
2886 | return ret; | |
2887 | } | |
2888 | } | |
2889 | ||
2890 | *target_errno = FILEIO_ENOSYS; | |
2891 | return -1; | |
2892 | } | |
2893 | ||
2894 | /* Unlink FILENAME on the target. Return 0, or -1 if an error | |
2895 | occurs (and set *TARGET_ERRNO). */ | |
2896 | int | |
2897 | target_fileio_unlink (const char *filename, int *target_errno) | |
2898 | { | |
2899 | struct target_ops *t; | |
2900 | ||
2901 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2902 | { | |
2903 | if (t->to_fileio_unlink != NULL) | |
2904 | { | |
dbbca37d | 2905 | int ret = t->to_fileio_unlink (t, filename, target_errno); |
7313baad UW |
2906 | |
2907 | if (targetdebug) | |
2908 | fprintf_unfiltered (gdb_stdlog, | |
2909 | "target_fileio_unlink (%s) = %d (%d)\n", | |
2910 | filename, ret, ret != -1 ? 0 : *target_errno); | |
2911 | return ret; | |
2912 | } | |
2913 | } | |
2914 | ||
2915 | *target_errno = FILEIO_ENOSYS; | |
2916 | return -1; | |
2917 | } | |
2918 | ||
b9e7b9c3 UW |
2919 | /* Read value of symbolic link FILENAME on the target. Return a |
2920 | null-terminated string allocated via xmalloc, or NULL if an error | |
2921 | occurs (and set *TARGET_ERRNO). */ | |
2922 | char * | |
2923 | target_fileio_readlink (const char *filename, int *target_errno) | |
2924 | { | |
2925 | struct target_ops *t; | |
2926 | ||
2927 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2928 | { | |
2929 | if (t->to_fileio_readlink != NULL) | |
2930 | { | |
fab5aa7c | 2931 | char *ret = t->to_fileio_readlink (t, filename, target_errno); |
b9e7b9c3 UW |
2932 | |
2933 | if (targetdebug) | |
2934 | fprintf_unfiltered (gdb_stdlog, | |
2935 | "target_fileio_readlink (%s) = %s (%d)\n", | |
2936 | filename, ret? ret : "(nil)", | |
2937 | ret? 0 : *target_errno); | |
2938 | return ret; | |
2939 | } | |
2940 | } | |
2941 | ||
2942 | *target_errno = FILEIO_ENOSYS; | |
2943 | return NULL; | |
2944 | } | |
2945 | ||
7313baad UW |
2946 | static void |
2947 | target_fileio_close_cleanup (void *opaque) | |
2948 | { | |
2949 | int fd = *(int *) opaque; | |
2950 | int target_errno; | |
2951 | ||
2952 | target_fileio_close (fd, &target_errno); | |
2953 | } | |
2954 | ||
2955 | /* Read target file FILENAME. Store the result in *BUF_P and | |
2956 | return the size of the transferred data. PADDING additional bytes are | |
2957 | available in *BUF_P. This is a helper function for | |
2958 | target_fileio_read_alloc; see the declaration of that function for more | |
2959 | information. */ | |
2960 | ||
2961 | static LONGEST | |
2962 | target_fileio_read_alloc_1 (const char *filename, | |
2963 | gdb_byte **buf_p, int padding) | |
2964 | { | |
2965 | struct cleanup *close_cleanup; | |
2966 | size_t buf_alloc, buf_pos; | |
2967 | gdb_byte *buf; | |
2968 | LONGEST n; | |
2969 | int fd; | |
2970 | int target_errno; | |
2971 | ||
2972 | fd = target_fileio_open (filename, FILEIO_O_RDONLY, 0700, &target_errno); | |
2973 | if (fd == -1) | |
2974 | return -1; | |
2975 | ||
2976 | close_cleanup = make_cleanup (target_fileio_close_cleanup, &fd); | |
2977 | ||
2978 | /* Start by reading up to 4K at a time. The target will throttle | |
2979 | this number down if necessary. */ | |
2980 | buf_alloc = 4096; | |
2981 | buf = xmalloc (buf_alloc); | |
2982 | buf_pos = 0; | |
2983 | while (1) | |
2984 | { | |
2985 | n = target_fileio_pread (fd, &buf[buf_pos], | |
2986 | buf_alloc - buf_pos - padding, buf_pos, | |
2987 | &target_errno); | |
2988 | if (n < 0) | |
2989 | { | |
2990 | /* An error occurred. */ | |
2991 | do_cleanups (close_cleanup); | |
2992 | xfree (buf); | |
2993 | return -1; | |
2994 | } | |
2995 | else if (n == 0) | |
2996 | { | |
2997 | /* Read all there was. */ | |
2998 | do_cleanups (close_cleanup); | |
2999 | if (buf_pos == 0) | |
3000 | xfree (buf); | |
3001 | else | |
3002 | *buf_p = buf; | |
3003 | return buf_pos; | |
3004 | } | |
3005 | ||
3006 | buf_pos += n; | |
3007 | ||
3008 | /* If the buffer is filling up, expand it. */ | |
3009 | if (buf_alloc < buf_pos * 2) | |
3010 | { | |
3011 | buf_alloc *= 2; | |
3012 | buf = xrealloc (buf, buf_alloc); | |
3013 | } | |
3014 | ||
3015 | QUIT; | |
3016 | } | |
3017 | } | |
3018 | ||
3019 | /* Read target file FILENAME. Store the result in *BUF_P and return | |
3020 | the size of the transferred data. See the declaration in "target.h" | |
3021 | function for more information about the return value. */ | |
3022 | ||
3023 | LONGEST | |
3024 | target_fileio_read_alloc (const char *filename, gdb_byte **buf_p) | |
3025 | { | |
3026 | return target_fileio_read_alloc_1 (filename, buf_p, 0); | |
3027 | } | |
3028 | ||
3029 | /* Read target file FILENAME. The result is NUL-terminated and | |
3030 | returned as a string, allocated using xmalloc. If an error occurs | |
3031 | or the transfer is unsupported, NULL is returned. Empty objects | |
3032 | are returned as allocated but empty strings. A warning is issued | |
3033 | if the result contains any embedded NUL bytes. */ | |
3034 | ||
3035 | char * | |
3036 | target_fileio_read_stralloc (const char *filename) | |
3037 | { | |
39086a0e PA |
3038 | gdb_byte *buffer; |
3039 | char *bufstr; | |
7313baad UW |
3040 | LONGEST i, transferred; |
3041 | ||
39086a0e PA |
3042 | transferred = target_fileio_read_alloc_1 (filename, &buffer, 1); |
3043 | bufstr = (char *) buffer; | |
7313baad UW |
3044 | |
3045 | if (transferred < 0) | |
3046 | return NULL; | |
3047 | ||
3048 | if (transferred == 0) | |
3049 | return xstrdup (""); | |
3050 | ||
39086a0e | 3051 | bufstr[transferred] = 0; |
7313baad UW |
3052 | |
3053 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
39086a0e PA |
3054 | for (i = strlen (bufstr); i < transferred; i++) |
3055 | if (bufstr[i] != 0) | |
7313baad UW |
3056 | { |
3057 | warning (_("target file %s " | |
3058 | "contained unexpected null characters"), | |
3059 | filename); | |
3060 | break; | |
3061 | } | |
3062 | ||
39086a0e | 3063 | return bufstr; |
7313baad UW |
3064 | } |
3065 | ||
3066 | ||
e0d24f8d | 3067 | static int |
31568a15 TT |
3068 | default_region_ok_for_hw_watchpoint (struct target_ops *self, |
3069 | CORE_ADDR addr, int len) | |
e0d24f8d | 3070 | { |
f5656ead | 3071 | return (len <= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT); |
ccaa32c7 GS |
3072 | } |
3073 | ||
5009afc5 AS |
3074 | static int |
3075 | default_watchpoint_addr_within_range (struct target_ops *target, | |
3076 | CORE_ADDR addr, | |
3077 | CORE_ADDR start, int length) | |
3078 | { | |
3079 | return addr >= start && addr < start + length; | |
3080 | } | |
3081 | ||
c2250ad1 UW |
3082 | static struct gdbarch * |
3083 | default_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
3084 | { | |
f5656ead | 3085 | return target_gdbarch (); |
c2250ad1 UW |
3086 | } |
3087 | ||
c906108c | 3088 | static int |
555bbdeb TT |
3089 | return_zero (struct target_ops *ignore) |
3090 | { | |
3091 | return 0; | |
3092 | } | |
3093 | ||
3094 | static int | |
3095 | return_zero_has_execution (struct target_ops *ignore, ptid_t ignore2) | |
c906108c SS |
3096 | { |
3097 | return 0; | |
3098 | } | |
3099 | ||
ed9a39eb JM |
3100 | /* |
3101 | * Find the next target down the stack from the specified target. | |
3102 | */ | |
3103 | ||
3104 | struct target_ops * | |
fba45db2 | 3105 | find_target_beneath (struct target_ops *t) |
ed9a39eb | 3106 | { |
258b763a | 3107 | return t->beneath; |
ed9a39eb JM |
3108 | } |
3109 | ||
8b06beed TT |
3110 | /* See target.h. */ |
3111 | ||
3112 | struct target_ops * | |
3113 | find_target_at (enum strata stratum) | |
3114 | { | |
3115 | struct target_ops *t; | |
3116 | ||
3117 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3118 | if (t->to_stratum == stratum) | |
3119 | return t; | |
3120 | ||
3121 | return NULL; | |
3122 | } | |
3123 | ||
c906108c SS |
3124 | \f |
3125 | /* The inferior process has died. Long live the inferior! */ | |
3126 | ||
3127 | void | |
fba45db2 | 3128 | generic_mourn_inferior (void) |
c906108c | 3129 | { |
7f9f62ba | 3130 | ptid_t ptid; |
c906108c | 3131 | |
7f9f62ba | 3132 | ptid = inferior_ptid; |
39f77062 | 3133 | inferior_ptid = null_ptid; |
7f9f62ba | 3134 | |
f59f708a PA |
3135 | /* Mark breakpoints uninserted in case something tries to delete a |
3136 | breakpoint while we delete the inferior's threads (which would | |
3137 | fail, since the inferior is long gone). */ | |
3138 | mark_breakpoints_out (); | |
3139 | ||
7f9f62ba PA |
3140 | if (!ptid_equal (ptid, null_ptid)) |
3141 | { | |
3142 | int pid = ptid_get_pid (ptid); | |
6c95b8df | 3143 | exit_inferior (pid); |
7f9f62ba PA |
3144 | } |
3145 | ||
f59f708a PA |
3146 | /* Note this wipes step-resume breakpoints, so needs to be done |
3147 | after exit_inferior, which ends up referencing the step-resume | |
3148 | breakpoints through clear_thread_inferior_resources. */ | |
c906108c | 3149 | breakpoint_init_inferior (inf_exited); |
f59f708a | 3150 | |
c906108c SS |
3151 | registers_changed (); |
3152 | ||
c906108c SS |
3153 | reopen_exec_file (); |
3154 | reinit_frame_cache (); | |
3155 | ||
9a4105ab AC |
3156 | if (deprecated_detach_hook) |
3157 | deprecated_detach_hook (); | |
c906108c SS |
3158 | } |
3159 | \f | |
fd0a2a6f MK |
3160 | /* Convert a normal process ID to a string. Returns the string in a |
3161 | static buffer. */ | |
c906108c SS |
3162 | |
3163 | char * | |
39f77062 | 3164 | normal_pid_to_str (ptid_t ptid) |
c906108c | 3165 | { |
fd0a2a6f | 3166 | static char buf[32]; |
c906108c | 3167 | |
5fff8fc0 | 3168 | xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid)); |
c906108c SS |
3169 | return buf; |
3170 | } | |
3171 | ||
2c0b251b | 3172 | static char * |
770234d3 | 3173 | default_pid_to_str (struct target_ops *ops, ptid_t ptid) |
117de6a9 PA |
3174 | { |
3175 | return normal_pid_to_str (ptid); | |
3176 | } | |
3177 | ||
9b4eba8e HZ |
3178 | /* Error-catcher for target_find_memory_regions. */ |
3179 | static int | |
2e73927c TT |
3180 | dummy_find_memory_regions (struct target_ops *self, |
3181 | find_memory_region_ftype ignore1, void *ignore2) | |
be4d1333 | 3182 | { |
9b4eba8e | 3183 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3184 | return 0; |
3185 | } | |
3186 | ||
9b4eba8e HZ |
3187 | /* Error-catcher for target_make_corefile_notes. */ |
3188 | static char * | |
fc6691b2 TT |
3189 | dummy_make_corefile_notes (struct target_ops *self, |
3190 | bfd *ignore1, int *ignore2) | |
be4d1333 | 3191 | { |
9b4eba8e | 3192 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3193 | return NULL; |
3194 | } | |
3195 | ||
c906108c SS |
3196 | /* Set up the handful of non-empty slots needed by the dummy target |
3197 | vector. */ | |
3198 | ||
3199 | static void | |
fba45db2 | 3200 | init_dummy_target (void) |
c906108c SS |
3201 | { |
3202 | dummy_target.to_shortname = "None"; | |
3203 | dummy_target.to_longname = "None"; | |
3204 | dummy_target.to_doc = ""; | |
03583c20 UW |
3205 | dummy_target.to_supports_disable_randomization |
3206 | = find_default_supports_disable_randomization; | |
c906108c | 3207 | dummy_target.to_stratum = dummy_stratum; |
555bbdeb TT |
3208 | dummy_target.to_has_all_memory = return_zero; |
3209 | dummy_target.to_has_memory = return_zero; | |
3210 | dummy_target.to_has_stack = return_zero; | |
3211 | dummy_target.to_has_registers = return_zero; | |
3212 | dummy_target.to_has_execution = return_zero_has_execution; | |
c906108c | 3213 | dummy_target.to_magic = OPS_MAGIC; |
1101cb7b TT |
3214 | |
3215 | install_dummy_methods (&dummy_target); | |
c906108c | 3216 | } |
c906108c | 3217 | \f |
c906108c | 3218 | static void |
fba45db2 | 3219 | debug_to_open (char *args, int from_tty) |
c906108c SS |
3220 | { |
3221 | debug_target.to_open (args, from_tty); | |
3222 | ||
96baa820 | 3223 | fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty); |
c906108c SS |
3224 | } |
3225 | ||
f1c07ab0 | 3226 | void |
460014f5 | 3227 | target_close (struct target_ops *targ) |
f1c07ab0 | 3228 | { |
7fdc1521 TT |
3229 | gdb_assert (!target_is_pushed (targ)); |
3230 | ||
f1c07ab0 | 3231 | if (targ->to_xclose != NULL) |
460014f5 | 3232 | targ->to_xclose (targ); |
f1c07ab0 | 3233 | else if (targ->to_close != NULL) |
de90e03d | 3234 | targ->to_close (targ); |
947b8855 PA |
3235 | |
3236 | if (targetdebug) | |
460014f5 | 3237 | fprintf_unfiltered (gdb_stdlog, "target_close ()\n"); |
f1c07ab0 AC |
3238 | } |
3239 | ||
28439f5e PA |
3240 | int |
3241 | target_thread_alive (ptid_t ptid) | |
c906108c | 3242 | { |
cbffc065 | 3243 | int retval; |
28439f5e | 3244 | |
cbffc065 TT |
3245 | retval = current_target.to_thread_alive (¤t_target, ptid); |
3246 | if (targetdebug) | |
3247 | fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n", | |
3248 | ptid_get_pid (ptid), retval); | |
28439f5e | 3249 | |
cbffc065 | 3250 | return retval; |
28439f5e PA |
3251 | } |
3252 | ||
3253 | void | |
3254 | target_find_new_threads (void) | |
3255 | { | |
09b0dc2b TT |
3256 | current_target.to_find_new_threads (¤t_target); |
3257 | if (targetdebug) | |
3258 | fprintf_unfiltered (gdb_stdlog, "target_find_new_threads ()\n"); | |
c906108c SS |
3259 | } |
3260 | ||
d914c394 SS |
3261 | void |
3262 | target_stop (ptid_t ptid) | |
3263 | { | |
3264 | if (!may_stop) | |
3265 | { | |
3266 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3267 | return; | |
3268 | } | |
3269 | ||
1eab8a48 | 3270 | (*current_target.to_stop) (¤t_target, ptid); |
d914c394 SS |
3271 | } |
3272 | ||
c906108c | 3273 | static void |
f045800c | 3274 | debug_to_post_attach (struct target_ops *self, int pid) |
c906108c | 3275 | { |
f045800c | 3276 | debug_target.to_post_attach (&debug_target, pid); |
c906108c | 3277 | |
28439f5e | 3278 | fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid); |
c906108c SS |
3279 | } |
3280 | ||
09826ec5 PA |
3281 | /* Concatenate ELEM to LIST, a comma separate list, and return the |
3282 | result. The LIST incoming argument is released. */ | |
3283 | ||
3284 | static char * | |
3285 | str_comma_list_concat_elem (char *list, const char *elem) | |
3286 | { | |
3287 | if (list == NULL) | |
3288 | return xstrdup (elem); | |
3289 | else | |
3290 | return reconcat (list, list, ", ", elem, (char *) NULL); | |
3291 | } | |
3292 | ||
3293 | /* Helper for target_options_to_string. If OPT is present in | |
3294 | TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET. | |
3295 | Returns the new resulting string. OPT is removed from | |
3296 | TARGET_OPTIONS. */ | |
3297 | ||
3298 | static char * | |
3299 | do_option (int *target_options, char *ret, | |
3300 | int opt, char *opt_str) | |
3301 | { | |
3302 | if ((*target_options & opt) != 0) | |
3303 | { | |
3304 | ret = str_comma_list_concat_elem (ret, opt_str); | |
3305 | *target_options &= ~opt; | |
3306 | } | |
3307 | ||
3308 | return ret; | |
3309 | } | |
3310 | ||
3311 | char * | |
3312 | target_options_to_string (int target_options) | |
3313 | { | |
3314 | char *ret = NULL; | |
3315 | ||
3316 | #define DO_TARG_OPTION(OPT) \ | |
3317 | ret = do_option (&target_options, ret, OPT, #OPT) | |
3318 | ||
3319 | DO_TARG_OPTION (TARGET_WNOHANG); | |
3320 | ||
3321 | if (target_options != 0) | |
3322 | ret = str_comma_list_concat_elem (ret, "unknown???"); | |
3323 | ||
3324 | if (ret == NULL) | |
3325 | ret = xstrdup (""); | |
3326 | return ret; | |
3327 | } | |
3328 | ||
bf0c5130 | 3329 | static void |
56be3814 UW |
3330 | debug_print_register (const char * func, |
3331 | struct regcache *regcache, int regno) | |
bf0c5130 | 3332 | { |
f8d29908 | 3333 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
5d502164 | 3334 | |
bf0c5130 | 3335 | fprintf_unfiltered (gdb_stdlog, "%s ", func); |
f8d29908 | 3336 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) |
f8d29908 UW |
3337 | && gdbarch_register_name (gdbarch, regno) != NULL |
3338 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') | |
3339 | fprintf_unfiltered (gdb_stdlog, "(%s)", | |
3340 | gdbarch_register_name (gdbarch, regno)); | |
bf0c5130 AC |
3341 | else |
3342 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
0ff58721 | 3343 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) |
bf0c5130 | 3344 | { |
e17a4113 | 3345 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
f8d29908 | 3346 | int i, size = register_size (gdbarch, regno); |
e362b510 | 3347 | gdb_byte buf[MAX_REGISTER_SIZE]; |
5d502164 | 3348 | |
0ff58721 | 3349 | regcache_raw_collect (regcache, regno, buf); |
bf0c5130 | 3350 | fprintf_unfiltered (gdb_stdlog, " = "); |
81c4a259 | 3351 | for (i = 0; i < size; i++) |
bf0c5130 AC |
3352 | { |
3353 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
3354 | } | |
81c4a259 | 3355 | if (size <= sizeof (LONGEST)) |
bf0c5130 | 3356 | { |
e17a4113 | 3357 | ULONGEST val = extract_unsigned_integer (buf, size, byte_order); |
5d502164 | 3358 | |
0b1553bc UW |
3359 | fprintf_unfiltered (gdb_stdlog, " %s %s", |
3360 | core_addr_to_string_nz (val), plongest (val)); | |
bf0c5130 AC |
3361 | } |
3362 | } | |
3363 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
3364 | } | |
3365 | ||
28439f5e PA |
3366 | void |
3367 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 3368 | { |
ad5989bd TT |
3369 | current_target.to_fetch_registers (¤t_target, regcache, regno); |
3370 | if (targetdebug) | |
3371 | debug_print_register ("target_fetch_registers", regcache, regno); | |
c906108c SS |
3372 | } |
3373 | ||
28439f5e PA |
3374 | void |
3375 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 3376 | { |
28439f5e | 3377 | struct target_ops *t; |
5d502164 | 3378 | |
d914c394 SS |
3379 | if (!may_write_registers) |
3380 | error (_("Writing to registers is not allowed (regno %d)"), regno); | |
3381 | ||
6b84065d TT |
3382 | current_target.to_store_registers (¤t_target, regcache, regno); |
3383 | if (targetdebug) | |
28439f5e | 3384 | { |
6b84065d | 3385 | debug_print_register ("target_store_registers", regcache, regno); |
28439f5e | 3386 | } |
c906108c SS |
3387 | } |
3388 | ||
dc146f7c VP |
3389 | int |
3390 | target_core_of_thread (ptid_t ptid) | |
3391 | { | |
9e538d0d | 3392 | int retval = current_target.to_core_of_thread (¤t_target, ptid); |
dc146f7c | 3393 | |
9e538d0d TT |
3394 | if (targetdebug) |
3395 | fprintf_unfiltered (gdb_stdlog, | |
3396 | "target_core_of_thread (%d) = %d\n", | |
3397 | ptid_get_pid (ptid), retval); | |
3398 | return retval; | |
dc146f7c VP |
3399 | } |
3400 | ||
4a5e7a5b PA |
3401 | int |
3402 | target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3403 | { | |
eb276a6b TT |
3404 | int retval = current_target.to_verify_memory (¤t_target, |
3405 | data, memaddr, size); | |
5d502164 | 3406 | |
eb276a6b TT |
3407 | if (targetdebug) |
3408 | fprintf_unfiltered (gdb_stdlog, | |
3409 | "target_verify_memory (%s, %s) = %d\n", | |
3410 | paddress (target_gdbarch (), memaddr), | |
3411 | pulongest (size), | |
3412 | retval); | |
3413 | return retval; | |
4a5e7a5b PA |
3414 | } |
3415 | ||
9c06b0b4 TJB |
3416 | /* The documentation for this function is in its prototype declaration in |
3417 | target.h. */ | |
3418 | ||
3419 | int | |
3420 | target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
3421 | { | |
cd4ae029 | 3422 | int ret; |
9c06b0b4 | 3423 | |
cd4ae029 TT |
3424 | ret = current_target.to_insert_mask_watchpoint (¤t_target, |
3425 | addr, mask, rw); | |
9c06b0b4 | 3426 | |
cd4ae029 TT |
3427 | if (targetdebug) |
3428 | fprintf_unfiltered (gdb_stdlog, "\ | |
9c06b0b4 | 3429 | target_insert_mask_watchpoint (%s, %s, %d) = %d\n", |
cd4ae029 TT |
3430 | core_addr_to_string (addr), |
3431 | core_addr_to_string (mask), rw, ret); | |
3432 | ||
3433 | return ret; | |
9c06b0b4 TJB |
3434 | } |
3435 | ||
3436 | /* The documentation for this function is in its prototype declaration in | |
3437 | target.h. */ | |
3438 | ||
3439 | int | |
3440 | target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
3441 | { | |
8b1c364c | 3442 | int ret; |
9c06b0b4 | 3443 | |
8b1c364c TT |
3444 | ret = current_target.to_remove_mask_watchpoint (¤t_target, |
3445 | addr, mask, rw); | |
9c06b0b4 | 3446 | |
8b1c364c TT |
3447 | if (targetdebug) |
3448 | fprintf_unfiltered (gdb_stdlog, "\ | |
9c06b0b4 | 3449 | target_remove_mask_watchpoint (%s, %s, %d) = %d\n", |
8b1c364c TT |
3450 | core_addr_to_string (addr), |
3451 | core_addr_to_string (mask), rw, ret); | |
9c06b0b4 | 3452 | |
8b1c364c | 3453 | return ret; |
9c06b0b4 TJB |
3454 | } |
3455 | ||
3456 | /* The documentation for this function is in its prototype declaration | |
3457 | in target.h. */ | |
3458 | ||
3459 | int | |
3460 | target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask) | |
3461 | { | |
6c7e5e5c TT |
3462 | return current_target.to_masked_watch_num_registers (¤t_target, |
3463 | addr, mask); | |
9c06b0b4 TJB |
3464 | } |
3465 | ||
f1310107 TJB |
3466 | /* The documentation for this function is in its prototype declaration |
3467 | in target.h. */ | |
3468 | ||
3469 | int | |
3470 | target_ranged_break_num_registers (void) | |
3471 | { | |
a134316b | 3472 | return current_target.to_ranged_break_num_registers (¤t_target); |
f1310107 TJB |
3473 | } |
3474 | ||
02d27625 MM |
3475 | /* See target.h. */ |
3476 | ||
02d27625 MM |
3477 | struct btrace_target_info * |
3478 | target_enable_btrace (ptid_t ptid) | |
3479 | { | |
6dc7fcf4 | 3480 | return current_target.to_enable_btrace (¤t_target, ptid); |
02d27625 MM |
3481 | } |
3482 | ||
3483 | /* See target.h. */ | |
3484 | ||
3485 | void | |
3486 | target_disable_btrace (struct btrace_target_info *btinfo) | |
3487 | { | |
8dc292d3 | 3488 | current_target.to_disable_btrace (¤t_target, btinfo); |
02d27625 MM |
3489 | } |
3490 | ||
3491 | /* See target.h. */ | |
3492 | ||
3493 | void | |
3494 | target_teardown_btrace (struct btrace_target_info *btinfo) | |
3495 | { | |
9ace480d | 3496 | current_target.to_teardown_btrace (¤t_target, btinfo); |
02d27625 MM |
3497 | } |
3498 | ||
3499 | /* See target.h. */ | |
3500 | ||
969c39fb MM |
3501 | enum btrace_error |
3502 | target_read_btrace (VEC (btrace_block_s) **btrace, | |
3503 | struct btrace_target_info *btinfo, | |
02d27625 MM |
3504 | enum btrace_read_type type) |
3505 | { | |
eb5b20d4 | 3506 | return current_target.to_read_btrace (¤t_target, btrace, btinfo, type); |
02d27625 MM |
3507 | } |
3508 | ||
d02ed0bb MM |
3509 | /* See target.h. */ |
3510 | ||
7c1687a9 MM |
3511 | void |
3512 | target_stop_recording (void) | |
3513 | { | |
ee97f592 | 3514 | current_target.to_stop_recording (¤t_target); |
7c1687a9 MM |
3515 | } |
3516 | ||
3517 | /* See target.h. */ | |
3518 | ||
d02ed0bb MM |
3519 | void |
3520 | target_info_record (void) | |
3521 | { | |
3522 | struct target_ops *t; | |
3523 | ||
3524 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3525 | if (t->to_info_record != NULL) | |
3526 | { | |
630d6a4a | 3527 | t->to_info_record (t); |
d02ed0bb MM |
3528 | return; |
3529 | } | |
3530 | ||
3531 | tcomplain (); | |
3532 | } | |
3533 | ||
3534 | /* See target.h. */ | |
3535 | ||
3536 | void | |
85e1311a | 3537 | target_save_record (const char *filename) |
d02ed0bb | 3538 | { |
f09e2107 | 3539 | current_target.to_save_record (¤t_target, filename); |
d02ed0bb MM |
3540 | } |
3541 | ||
3542 | /* See target.h. */ | |
3543 | ||
3544 | int | |
3545 | target_supports_delete_record (void) | |
3546 | { | |
3547 | struct target_ops *t; | |
3548 | ||
3549 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3550 | if (t->to_delete_record != NULL) | |
3551 | return 1; | |
3552 | ||
3553 | return 0; | |
3554 | } | |
3555 | ||
3556 | /* See target.h. */ | |
3557 | ||
3558 | void | |
3559 | target_delete_record (void) | |
3560 | { | |
07366925 | 3561 | current_target.to_delete_record (¤t_target); |
d02ed0bb MM |
3562 | } |
3563 | ||
3564 | /* See target.h. */ | |
3565 | ||
3566 | int | |
3567 | target_record_is_replaying (void) | |
3568 | { | |
dd2e9d25 | 3569 | return current_target.to_record_is_replaying (¤t_target); |
d02ed0bb MM |
3570 | } |
3571 | ||
3572 | /* See target.h. */ | |
3573 | ||
3574 | void | |
3575 | target_goto_record_begin (void) | |
3576 | { | |
671e76cc | 3577 | current_target.to_goto_record_begin (¤t_target); |
d02ed0bb MM |
3578 | } |
3579 | ||
3580 | /* See target.h. */ | |
3581 | ||
3582 | void | |
3583 | target_goto_record_end (void) | |
3584 | { | |
e9179bb3 | 3585 | current_target.to_goto_record_end (¤t_target); |
d02ed0bb MM |
3586 | } |
3587 | ||
3588 | /* See target.h. */ | |
3589 | ||
3590 | void | |
3591 | target_goto_record (ULONGEST insn) | |
3592 | { | |
05969c84 | 3593 | current_target.to_goto_record (¤t_target, insn); |
d02ed0bb MM |
3594 | } |
3595 | ||
67c86d06 MM |
3596 | /* See target.h. */ |
3597 | ||
3598 | void | |
3599 | target_insn_history (int size, int flags) | |
3600 | { | |
3679abfa | 3601 | current_target.to_insn_history (¤t_target, size, flags); |
67c86d06 MM |
3602 | } |
3603 | ||
3604 | /* See target.h. */ | |
3605 | ||
3606 | void | |
3607 | target_insn_history_from (ULONGEST from, int size, int flags) | |
3608 | { | |
8444ab58 | 3609 | current_target.to_insn_history_from (¤t_target, from, size, flags); |
67c86d06 MM |
3610 | } |
3611 | ||
3612 | /* See target.h. */ | |
3613 | ||
3614 | void | |
3615 | target_insn_history_range (ULONGEST begin, ULONGEST end, int flags) | |
3616 | { | |
c29302cc | 3617 | current_target.to_insn_history_range (¤t_target, begin, end, flags); |
67c86d06 MM |
3618 | } |
3619 | ||
15984c13 MM |
3620 | /* See target.h. */ |
3621 | ||
3622 | void | |
3623 | target_call_history (int size, int flags) | |
3624 | { | |
170049d4 | 3625 | current_target.to_call_history (¤t_target, size, flags); |
15984c13 MM |
3626 | } |
3627 | ||
3628 | /* See target.h. */ | |
3629 | ||
3630 | void | |
3631 | target_call_history_from (ULONGEST begin, int size, int flags) | |
3632 | { | |
16fc27d6 | 3633 | current_target.to_call_history_from (¤t_target, begin, size, flags); |
15984c13 MM |
3634 | } |
3635 | ||
3636 | /* See target.h. */ | |
3637 | ||
3638 | void | |
3639 | target_call_history_range (ULONGEST begin, ULONGEST end, int flags) | |
3640 | { | |
115d9817 | 3641 | current_target.to_call_history_range (¤t_target, begin, end, flags); |
15984c13 MM |
3642 | } |
3643 | ||
c906108c | 3644 | static void |
f32dbf8c | 3645 | debug_to_prepare_to_store (struct target_ops *self, struct regcache *regcache) |
c906108c | 3646 | { |
f32dbf8c | 3647 | debug_target.to_prepare_to_store (&debug_target, regcache); |
c906108c | 3648 | |
96baa820 | 3649 | fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n"); |
c906108c SS |
3650 | } |
3651 | ||
ea001bdc MM |
3652 | /* See target.h. */ |
3653 | ||
3654 | const struct frame_unwind * | |
3655 | target_get_unwinder (void) | |
3656 | { | |
ac01945b | 3657 | return current_target.to_get_unwinder (¤t_target); |
ea001bdc MM |
3658 | } |
3659 | ||
3660 | /* See target.h. */ | |
3661 | ||
3662 | const struct frame_unwind * | |
3663 | target_get_tailcall_unwinder (void) | |
3664 | { | |
ac01945b | 3665 | return current_target.to_get_tailcall_unwinder (¤t_target); |
ea001bdc MM |
3666 | } |
3667 | ||
c0eca49f | 3668 | /* Default implementation of to_decr_pc_after_break. */ |
118e6252 | 3669 | |
c0eca49f TT |
3670 | static CORE_ADDR |
3671 | default_target_decr_pc_after_break (struct target_ops *ops, | |
118e6252 MM |
3672 | struct gdbarch *gdbarch) |
3673 | { | |
118e6252 MM |
3674 | return gdbarch_decr_pc_after_break (gdbarch); |
3675 | } | |
3676 | ||
3677 | /* See target.h. */ | |
3678 | ||
3679 | CORE_ADDR | |
3680 | target_decr_pc_after_break (struct gdbarch *gdbarch) | |
3681 | { | |
c0eca49f | 3682 | return current_target.to_decr_pc_after_break (¤t_target, gdbarch); |
118e6252 MM |
3683 | } |
3684 | ||
c906108c | 3685 | static void |
fba45db2 | 3686 | debug_to_files_info (struct target_ops *target) |
c906108c SS |
3687 | { |
3688 | debug_target.to_files_info (target); | |
3689 | ||
96baa820 | 3690 | fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n"); |
c906108c SS |
3691 | } |
3692 | ||
3693 | static int | |
3db08215 | 3694 | debug_to_insert_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, |
a6d9a66e | 3695 | struct bp_target_info *bp_tgt) |
c906108c SS |
3696 | { |
3697 | int retval; | |
3698 | ||
6b84065d | 3699 | retval = debug_target.to_insert_breakpoint (&debug_target, gdbarch, bp_tgt); |
c906108c | 3700 | |
96baa820 | 3701 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
3702 | "target_insert_breakpoint (%s, xxx) = %ld\n", |
3703 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 3704 | (unsigned long) retval); |
c906108c SS |
3705 | return retval; |
3706 | } | |
3707 | ||
3708 | static int | |
3db08215 | 3709 | debug_to_remove_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, |
a6d9a66e | 3710 | struct bp_target_info *bp_tgt) |
c906108c SS |
3711 | { |
3712 | int retval; | |
3713 | ||
6b84065d | 3714 | retval = debug_target.to_remove_breakpoint (&debug_target, gdbarch, bp_tgt); |
c906108c | 3715 | |
96baa820 | 3716 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
3717 | "target_remove_breakpoint (%s, xxx) = %ld\n", |
3718 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 3719 | (unsigned long) retval); |
c906108c SS |
3720 | return retval; |
3721 | } | |
3722 | ||
ccaa32c7 | 3723 | static int |
5461485a TT |
3724 | debug_to_can_use_hw_breakpoint (struct target_ops *self, |
3725 | int type, int cnt, int from_tty) | |
ccaa32c7 GS |
3726 | { |
3727 | int retval; | |
3728 | ||
5461485a TT |
3729 | retval = debug_target.to_can_use_hw_breakpoint (&debug_target, |
3730 | type, cnt, from_tty); | |
ccaa32c7 GS |
3731 | |
3732 | fprintf_unfiltered (gdb_stdlog, | |
3733 | "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n", | |
3734 | (unsigned long) type, | |
3735 | (unsigned long) cnt, | |
3736 | (unsigned long) from_tty, | |
3737 | (unsigned long) retval); | |
3738 | return retval; | |
3739 | } | |
3740 | ||
e0d24f8d | 3741 | static int |
31568a15 TT |
3742 | debug_to_region_ok_for_hw_watchpoint (struct target_ops *self, |
3743 | CORE_ADDR addr, int len) | |
e0d24f8d WZ |
3744 | { |
3745 | CORE_ADDR retval; | |
3746 | ||
31568a15 TT |
3747 | retval = debug_target.to_region_ok_for_hw_watchpoint (&debug_target, |
3748 | addr, len); | |
e0d24f8d WZ |
3749 | |
3750 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3751 | "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n", |
3752 | core_addr_to_string (addr), (unsigned long) len, | |
3753 | core_addr_to_string (retval)); | |
e0d24f8d WZ |
3754 | return retval; |
3755 | } | |
3756 | ||
0cf6dd15 | 3757 | static int |
c3a5ff89 TT |
3758 | debug_to_can_accel_watchpoint_condition (struct target_ops *self, |
3759 | CORE_ADDR addr, int len, int rw, | |
0cf6dd15 TJB |
3760 | struct expression *cond) |
3761 | { | |
3762 | int retval; | |
3763 | ||
c3a5ff89 TT |
3764 | retval = debug_target.to_can_accel_watchpoint_condition (&debug_target, |
3765 | addr, len, | |
3e43a32a | 3766 | rw, cond); |
0cf6dd15 TJB |
3767 | |
3768 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
3769 | "target_can_accel_watchpoint_condition " |
3770 | "(%s, %d, %d, %s) = %ld\n", | |
bd91e7ae OS |
3771 | core_addr_to_string (addr), len, rw, |
3772 | host_address_to_string (cond), (unsigned long) retval); | |
0cf6dd15 TJB |
3773 | return retval; |
3774 | } | |
3775 | ||
ccaa32c7 | 3776 | static int |
6a109b6b | 3777 | debug_to_stopped_by_watchpoint (struct target_ops *ops) |
ccaa32c7 GS |
3778 | { |
3779 | int retval; | |
3780 | ||
6a109b6b | 3781 | retval = debug_target.to_stopped_by_watchpoint (&debug_target); |
ccaa32c7 GS |
3782 | |
3783 | fprintf_unfiltered (gdb_stdlog, | |
d92524f1 | 3784 | "target_stopped_by_watchpoint () = %ld\n", |
ccaa32c7 GS |
3785 | (unsigned long) retval); |
3786 | return retval; | |
3787 | } | |
3788 | ||
4aa7a7f5 JJ |
3789 | static int |
3790 | debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr) | |
ccaa32c7 | 3791 | { |
4aa7a7f5 | 3792 | int retval; |
ccaa32c7 | 3793 | |
4aa7a7f5 | 3794 | retval = debug_target.to_stopped_data_address (target, addr); |
ccaa32c7 GS |
3795 | |
3796 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3797 | "target_stopped_data_address ([%s]) = %ld\n", |
3798 | core_addr_to_string (*addr), | |
4aa7a7f5 | 3799 | (unsigned long)retval); |
ccaa32c7 GS |
3800 | return retval; |
3801 | } | |
3802 | ||
5009afc5 AS |
3803 | static int |
3804 | debug_to_watchpoint_addr_within_range (struct target_ops *target, | |
3805 | CORE_ADDR addr, | |
3806 | CORE_ADDR start, int length) | |
3807 | { | |
3808 | int retval; | |
3809 | ||
3810 | retval = debug_target.to_watchpoint_addr_within_range (target, addr, | |
3811 | start, length); | |
3812 | ||
3813 | fprintf_filtered (gdb_stdlog, | |
bd91e7ae OS |
3814 | "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n", |
3815 | core_addr_to_string (addr), core_addr_to_string (start), | |
3816 | length, retval); | |
5009afc5 AS |
3817 | return retval; |
3818 | } | |
3819 | ||
ccaa32c7 | 3820 | static int |
23a26771 TT |
3821 | debug_to_insert_hw_breakpoint (struct target_ops *self, |
3822 | struct gdbarch *gdbarch, | |
a6d9a66e | 3823 | struct bp_target_info *bp_tgt) |
ccaa32c7 GS |
3824 | { |
3825 | int retval; | |
3826 | ||
23a26771 TT |
3827 | retval = debug_target.to_insert_hw_breakpoint (&debug_target, |
3828 | gdbarch, bp_tgt); | |
ccaa32c7 GS |
3829 | |
3830 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3831 | "target_insert_hw_breakpoint (%s, xxx) = %ld\n", |
3832 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
3833 | (unsigned long) retval); |
3834 | return retval; | |
3835 | } | |
3836 | ||
3837 | static int | |
a64dc96c TT |
3838 | debug_to_remove_hw_breakpoint (struct target_ops *self, |
3839 | struct gdbarch *gdbarch, | |
a6d9a66e | 3840 | struct bp_target_info *bp_tgt) |
ccaa32c7 GS |
3841 | { |
3842 | int retval; | |
3843 | ||
a64dc96c TT |
3844 | retval = debug_target.to_remove_hw_breakpoint (&debug_target, |
3845 | gdbarch, bp_tgt); | |
ccaa32c7 GS |
3846 | |
3847 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3848 | "target_remove_hw_breakpoint (%s, xxx) = %ld\n", |
3849 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
3850 | (unsigned long) retval); |
3851 | return retval; | |
3852 | } | |
3853 | ||
3854 | static int | |
7bb99c53 TT |
3855 | debug_to_insert_watchpoint (struct target_ops *self, |
3856 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 3857 | struct expression *cond) |
ccaa32c7 GS |
3858 | { |
3859 | int retval; | |
3860 | ||
7bb99c53 TT |
3861 | retval = debug_target.to_insert_watchpoint (&debug_target, |
3862 | addr, len, type, cond); | |
ccaa32c7 GS |
3863 | |
3864 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3865 | "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n", |
3866 | core_addr_to_string (addr), len, type, | |
3867 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
3868 | return retval; |
3869 | } | |
3870 | ||
3871 | static int | |
11b5219a TT |
3872 | debug_to_remove_watchpoint (struct target_ops *self, |
3873 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 3874 | struct expression *cond) |
ccaa32c7 GS |
3875 | { |
3876 | int retval; | |
3877 | ||
11b5219a TT |
3878 | retval = debug_target.to_remove_watchpoint (&debug_target, |
3879 | addr, len, type, cond); | |
ccaa32c7 GS |
3880 | |
3881 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3882 | "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n", |
3883 | core_addr_to_string (addr), len, type, | |
3884 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
3885 | return retval; |
3886 | } | |
3887 | ||
c906108c | 3888 | static void |
c42bf286 | 3889 | debug_to_terminal_init (struct target_ops *self) |
c906108c | 3890 | { |
c42bf286 | 3891 | debug_target.to_terminal_init (&debug_target); |
c906108c | 3892 | |
96baa820 | 3893 | fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n"); |
c906108c SS |
3894 | } |
3895 | ||
3896 | static void | |
d2f640d4 | 3897 | debug_to_terminal_inferior (struct target_ops *self) |
c906108c | 3898 | { |
d2f640d4 | 3899 | debug_target.to_terminal_inferior (&debug_target); |
c906108c | 3900 | |
96baa820 | 3901 | fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n"); |
c906108c SS |
3902 | } |
3903 | ||
3904 | static void | |
2e1e1a19 | 3905 | debug_to_terminal_ours_for_output (struct target_ops *self) |
c906108c | 3906 | { |
2e1e1a19 | 3907 | debug_target.to_terminal_ours_for_output (&debug_target); |
c906108c | 3908 | |
96baa820 | 3909 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n"); |
c906108c SS |
3910 | } |
3911 | ||
3912 | static void | |
e3594fd1 | 3913 | debug_to_terminal_ours (struct target_ops *self) |
c906108c | 3914 | { |
e3594fd1 | 3915 | debug_target.to_terminal_ours (&debug_target); |
c906108c | 3916 | |
96baa820 | 3917 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n"); |
c906108c SS |
3918 | } |
3919 | ||
a790ad35 | 3920 | static void |
ae3bd431 | 3921 | debug_to_terminal_save_ours (struct target_ops *self) |
a790ad35 | 3922 | { |
ae3bd431 | 3923 | debug_target.to_terminal_save_ours (&debug_target); |
a790ad35 SC |
3924 | |
3925 | fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n"); | |
3926 | } | |
3927 | ||
c906108c | 3928 | static void |
0a4f40a2 TT |
3929 | debug_to_terminal_info (struct target_ops *self, |
3930 | const char *arg, int from_tty) | |
c906108c | 3931 | { |
0a4f40a2 | 3932 | debug_target.to_terminal_info (&debug_target, arg, from_tty); |
c906108c | 3933 | |
96baa820 | 3934 | fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg, |
c906108c SS |
3935 | from_tty); |
3936 | } | |
3937 | ||
c906108c | 3938 | static void |
71a9f134 | 3939 | debug_to_load (struct target_ops *self, char *args, int from_tty) |
c906108c | 3940 | { |
71a9f134 | 3941 | debug_target.to_load (&debug_target, args, from_tty); |
c906108c | 3942 | |
96baa820 | 3943 | fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty); |
c906108c SS |
3944 | } |
3945 | ||
c906108c | 3946 | static void |
2e97a79e | 3947 | debug_to_post_startup_inferior (struct target_ops *self, ptid_t ptid) |
c906108c | 3948 | { |
2e97a79e | 3949 | debug_target.to_post_startup_inferior (&debug_target, ptid); |
c906108c | 3950 | |
96baa820 | 3951 | fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n", |
dfd4cc63 | 3952 | ptid_get_pid (ptid)); |
c906108c SS |
3953 | } |
3954 | ||
77b06cd7 | 3955 | static int |
a863b201 | 3956 | debug_to_insert_fork_catchpoint (struct target_ops *self, int pid) |
c906108c | 3957 | { |
77b06cd7 TJB |
3958 | int retval; |
3959 | ||
a863b201 | 3960 | retval = debug_target.to_insert_fork_catchpoint (&debug_target, pid); |
77b06cd7 TJB |
3961 | |
3962 | fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d) = %d\n", | |
3963 | pid, retval); | |
c906108c | 3964 | |
77b06cd7 | 3965 | return retval; |
c906108c SS |
3966 | } |
3967 | ||
3968 | static int | |
973fc227 | 3969 | debug_to_remove_fork_catchpoint (struct target_ops *self, int pid) |
c906108c | 3970 | { |
c5aa993b | 3971 | int retval; |
c906108c | 3972 | |
973fc227 | 3973 | retval = debug_target.to_remove_fork_catchpoint (&debug_target, pid); |
c906108c | 3974 | |
96baa820 | 3975 | fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n", |
c5aa993b | 3976 | pid, retval); |
c906108c SS |
3977 | |
3978 | return retval; | |
3979 | } | |
3980 | ||
77b06cd7 | 3981 | static int |
3ecc7da0 | 3982 | debug_to_insert_vfork_catchpoint (struct target_ops *self, int pid) |
c906108c | 3983 | { |
77b06cd7 TJB |
3984 | int retval; |
3985 | ||
3ecc7da0 | 3986 | retval = debug_target.to_insert_vfork_catchpoint (&debug_target, pid); |
c906108c | 3987 | |
77b06cd7 TJB |
3988 | fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d) = %d\n", |
3989 | pid, retval); | |
3990 | ||
3991 | return retval; | |
c906108c SS |
3992 | } |
3993 | ||
3994 | static int | |
e98cf0cd | 3995 | debug_to_remove_vfork_catchpoint (struct target_ops *self, int pid) |
c906108c | 3996 | { |
c5aa993b | 3997 | int retval; |
c906108c | 3998 | |
e98cf0cd | 3999 | retval = debug_target.to_remove_vfork_catchpoint (&debug_target, pid); |
c906108c | 4000 | |
96baa820 | 4001 | fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n", |
c5aa993b | 4002 | pid, retval); |
c906108c SS |
4003 | |
4004 | return retval; | |
4005 | } | |
4006 | ||
77b06cd7 | 4007 | static int |
ba025e51 | 4008 | debug_to_insert_exec_catchpoint (struct target_ops *self, int pid) |
c906108c | 4009 | { |
77b06cd7 TJB |
4010 | int retval; |
4011 | ||
ba025e51 | 4012 | retval = debug_target.to_insert_exec_catchpoint (&debug_target, pid); |
c906108c | 4013 | |
77b06cd7 TJB |
4014 | fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d) = %d\n", |
4015 | pid, retval); | |
4016 | ||
4017 | return retval; | |
c906108c SS |
4018 | } |
4019 | ||
4020 | static int | |
758e29d2 | 4021 | debug_to_remove_exec_catchpoint (struct target_ops *self, int pid) |
c906108c | 4022 | { |
c5aa993b | 4023 | int retval; |
c906108c | 4024 | |
758e29d2 | 4025 | retval = debug_target.to_remove_exec_catchpoint (&debug_target, pid); |
c906108c | 4026 | |
96baa820 | 4027 | fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n", |
c5aa993b | 4028 | pid, retval); |
c906108c SS |
4029 | |
4030 | return retval; | |
4031 | } | |
4032 | ||
c906108c | 4033 | static int |
d796e1d6 TT |
4034 | debug_to_has_exited (struct target_ops *self, |
4035 | int pid, int wait_status, int *exit_status) | |
c906108c | 4036 | { |
c5aa993b | 4037 | int has_exited; |
c906108c | 4038 | |
d796e1d6 TT |
4039 | has_exited = debug_target.to_has_exited (&debug_target, |
4040 | pid, wait_status, exit_status); | |
c906108c | 4041 | |
96baa820 | 4042 | fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n", |
c5aa993b | 4043 | pid, wait_status, *exit_status, has_exited); |
c906108c SS |
4044 | |
4045 | return has_exited; | |
4046 | } | |
4047 | ||
c906108c | 4048 | static int |
da82bd6b | 4049 | debug_to_can_run (struct target_ops *self) |
c906108c SS |
4050 | { |
4051 | int retval; | |
4052 | ||
da82bd6b | 4053 | retval = debug_target.to_can_run (&debug_target); |
c906108c | 4054 | |
96baa820 | 4055 | fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval); |
c906108c SS |
4056 | |
4057 | return retval; | |
4058 | } | |
4059 | ||
c2250ad1 UW |
4060 | static struct gdbarch * |
4061 | debug_to_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
4062 | { | |
4063 | struct gdbarch *retval; | |
4064 | ||
4065 | retval = debug_target.to_thread_architecture (ops, ptid); | |
4066 | ||
3e43a32a MS |
4067 | fprintf_unfiltered (gdb_stdlog, |
4068 | "target_thread_architecture (%s) = %s [%s]\n", | |
4069 | target_pid_to_str (ptid), | |
4070 | host_address_to_string (retval), | |
c2250ad1 UW |
4071 | gdbarch_bfd_arch_info (retval)->printable_name); |
4072 | return retval; | |
4073 | } | |
4074 | ||
c906108c | 4075 | static void |
1eab8a48 | 4076 | debug_to_stop (struct target_ops *self, ptid_t ptid) |
c906108c | 4077 | { |
1eab8a48 | 4078 | debug_target.to_stop (&debug_target, ptid); |
c906108c | 4079 | |
94cc34af PA |
4080 | fprintf_unfiltered (gdb_stdlog, "target_stop (%s)\n", |
4081 | target_pid_to_str (ptid)); | |
c906108c SS |
4082 | } |
4083 | ||
96baa820 | 4084 | static void |
1aac633b | 4085 | debug_to_rcmd (struct target_ops *self, char *command, |
d9fcf2fb | 4086 | struct ui_file *outbuf) |
96baa820 | 4087 | { |
1aac633b | 4088 | debug_target.to_rcmd (&debug_target, command, outbuf); |
96baa820 JM |
4089 | fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command); |
4090 | } | |
4091 | ||
c906108c | 4092 | static char * |
8dd27370 | 4093 | debug_to_pid_to_exec_file (struct target_ops *self, int pid) |
c906108c | 4094 | { |
c5aa993b | 4095 | char *exec_file; |
c906108c | 4096 | |
8dd27370 | 4097 | exec_file = debug_target.to_pid_to_exec_file (&debug_target, pid); |
c906108c | 4098 | |
96baa820 | 4099 | fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n", |
c5aa993b | 4100 | pid, exec_file); |
c906108c SS |
4101 | |
4102 | return exec_file; | |
4103 | } | |
4104 | ||
c906108c | 4105 | static void |
fba45db2 | 4106 | setup_target_debug (void) |
c906108c SS |
4107 | { |
4108 | memcpy (&debug_target, ¤t_target, sizeof debug_target); | |
4109 | ||
4110 | current_target.to_open = debug_to_open; | |
c906108c | 4111 | current_target.to_post_attach = debug_to_post_attach; |
c906108c | 4112 | current_target.to_prepare_to_store = debug_to_prepare_to_store; |
c906108c SS |
4113 | current_target.to_files_info = debug_to_files_info; |
4114 | current_target.to_insert_breakpoint = debug_to_insert_breakpoint; | |
4115 | current_target.to_remove_breakpoint = debug_to_remove_breakpoint; | |
ccaa32c7 GS |
4116 | current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint; |
4117 | current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint; | |
4118 | current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint; | |
4119 | current_target.to_insert_watchpoint = debug_to_insert_watchpoint; | |
4120 | current_target.to_remove_watchpoint = debug_to_remove_watchpoint; | |
4121 | current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint; | |
4122 | current_target.to_stopped_data_address = debug_to_stopped_data_address; | |
3e43a32a MS |
4123 | current_target.to_watchpoint_addr_within_range |
4124 | = debug_to_watchpoint_addr_within_range; | |
4125 | current_target.to_region_ok_for_hw_watchpoint | |
4126 | = debug_to_region_ok_for_hw_watchpoint; | |
4127 | current_target.to_can_accel_watchpoint_condition | |
4128 | = debug_to_can_accel_watchpoint_condition; | |
c906108c SS |
4129 | current_target.to_terminal_init = debug_to_terminal_init; |
4130 | current_target.to_terminal_inferior = debug_to_terminal_inferior; | |
3e43a32a MS |
4131 | current_target.to_terminal_ours_for_output |
4132 | = debug_to_terminal_ours_for_output; | |
c906108c | 4133 | current_target.to_terminal_ours = debug_to_terminal_ours; |
a790ad35 | 4134 | current_target.to_terminal_save_ours = debug_to_terminal_save_ours; |
c906108c | 4135 | current_target.to_terminal_info = debug_to_terminal_info; |
c906108c | 4136 | current_target.to_load = debug_to_load; |
c906108c | 4137 | current_target.to_post_startup_inferior = debug_to_post_startup_inferior; |
c906108c SS |
4138 | current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint; |
4139 | current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint; | |
4140 | current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint; | |
4141 | current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint; | |
c906108c SS |
4142 | current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint; |
4143 | current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint; | |
c906108c | 4144 | current_target.to_has_exited = debug_to_has_exited; |
c906108c | 4145 | current_target.to_can_run = debug_to_can_run; |
c906108c | 4146 | current_target.to_stop = debug_to_stop; |
96baa820 | 4147 | current_target.to_rcmd = debug_to_rcmd; |
c906108c | 4148 | current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file; |
c2250ad1 | 4149 | current_target.to_thread_architecture = debug_to_thread_architecture; |
c906108c | 4150 | } |
c906108c | 4151 | \f |
c5aa993b JM |
4152 | |
4153 | static char targ_desc[] = | |
3e43a32a MS |
4154 | "Names of targets and files being debugged.\nShows the entire \ |
4155 | stack of targets currently in use (including the exec-file,\n\ | |
c906108c SS |
4156 | core-file, and process, if any), as well as the symbol file name."; |
4157 | ||
a53f3625 TT |
4158 | static void |
4159 | default_rcmd (struct target_ops *self, char *command, struct ui_file *output) | |
4160 | { | |
4161 | error (_("\"monitor\" command not supported by this target.")); | |
4162 | } | |
4163 | ||
96baa820 JM |
4164 | static void |
4165 | do_monitor_command (char *cmd, | |
4166 | int from_tty) | |
4167 | { | |
96baa820 JM |
4168 | target_rcmd (cmd, gdb_stdtarg); |
4169 | } | |
4170 | ||
87680a14 JB |
4171 | /* Print the name of each layers of our target stack. */ |
4172 | ||
4173 | static void | |
4174 | maintenance_print_target_stack (char *cmd, int from_tty) | |
4175 | { | |
4176 | struct target_ops *t; | |
4177 | ||
4178 | printf_filtered (_("The current target stack is:\n")); | |
4179 | ||
4180 | for (t = target_stack; t != NULL; t = t->beneath) | |
4181 | { | |
4182 | printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname); | |
4183 | } | |
4184 | } | |
4185 | ||
c6ebd6cf VP |
4186 | /* Controls if async mode is permitted. */ |
4187 | int target_async_permitted = 0; | |
4188 | ||
4189 | /* The set command writes to this variable. If the inferior is | |
b5419e49 | 4190 | executing, target_async_permitted is *not* updated. */ |
c6ebd6cf VP |
4191 | static int target_async_permitted_1 = 0; |
4192 | ||
4193 | static void | |
9401a810 PA |
4194 | set_target_async_command (char *args, int from_tty, |
4195 | struct cmd_list_element *c) | |
c6ebd6cf | 4196 | { |
c35b1492 | 4197 | if (have_live_inferiors ()) |
c6ebd6cf VP |
4198 | { |
4199 | target_async_permitted_1 = target_async_permitted; | |
4200 | error (_("Cannot change this setting while the inferior is running.")); | |
4201 | } | |
4202 | ||
4203 | target_async_permitted = target_async_permitted_1; | |
4204 | } | |
4205 | ||
4206 | static void | |
9401a810 PA |
4207 | show_target_async_command (struct ui_file *file, int from_tty, |
4208 | struct cmd_list_element *c, | |
4209 | const char *value) | |
c6ebd6cf | 4210 | { |
3e43a32a MS |
4211 | fprintf_filtered (file, |
4212 | _("Controlling the inferior in " | |
4213 | "asynchronous mode is %s.\n"), value); | |
c6ebd6cf VP |
4214 | } |
4215 | ||
d914c394 SS |
4216 | /* Temporary copies of permission settings. */ |
4217 | ||
4218 | static int may_write_registers_1 = 1; | |
4219 | static int may_write_memory_1 = 1; | |
4220 | static int may_insert_breakpoints_1 = 1; | |
4221 | static int may_insert_tracepoints_1 = 1; | |
4222 | static int may_insert_fast_tracepoints_1 = 1; | |
4223 | static int may_stop_1 = 1; | |
4224 | ||
4225 | /* Make the user-set values match the real values again. */ | |
4226 | ||
4227 | void | |
4228 | update_target_permissions (void) | |
4229 | { | |
4230 | may_write_registers_1 = may_write_registers; | |
4231 | may_write_memory_1 = may_write_memory; | |
4232 | may_insert_breakpoints_1 = may_insert_breakpoints; | |
4233 | may_insert_tracepoints_1 = may_insert_tracepoints; | |
4234 | may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints; | |
4235 | may_stop_1 = may_stop; | |
4236 | } | |
4237 | ||
4238 | /* The one function handles (most of) the permission flags in the same | |
4239 | way. */ | |
4240 | ||
4241 | static void | |
4242 | set_target_permissions (char *args, int from_tty, | |
4243 | struct cmd_list_element *c) | |
4244 | { | |
4245 | if (target_has_execution) | |
4246 | { | |
4247 | update_target_permissions (); | |
4248 | error (_("Cannot change this setting while the inferior is running.")); | |
4249 | } | |
4250 | ||
4251 | /* Make the real values match the user-changed values. */ | |
4252 | may_write_registers = may_write_registers_1; | |
4253 | may_insert_breakpoints = may_insert_breakpoints_1; | |
4254 | may_insert_tracepoints = may_insert_tracepoints_1; | |
4255 | may_insert_fast_tracepoints = may_insert_fast_tracepoints_1; | |
4256 | may_stop = may_stop_1; | |
4257 | update_observer_mode (); | |
4258 | } | |
4259 | ||
4260 | /* Set memory write permission independently of observer mode. */ | |
4261 | ||
4262 | static void | |
4263 | set_write_memory_permission (char *args, int from_tty, | |
4264 | struct cmd_list_element *c) | |
4265 | { | |
4266 | /* Make the real values match the user-changed values. */ | |
4267 | may_write_memory = may_write_memory_1; | |
4268 | update_observer_mode (); | |
4269 | } | |
4270 | ||
4271 | ||
c906108c | 4272 | void |
fba45db2 | 4273 | initialize_targets (void) |
c906108c SS |
4274 | { |
4275 | init_dummy_target (); | |
4276 | push_target (&dummy_target); | |
4277 | ||
4278 | add_info ("target", target_info, targ_desc); | |
4279 | add_info ("files", target_info, targ_desc); | |
4280 | ||
ccce17b0 | 4281 | add_setshow_zuinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
85c07804 AC |
4282 | Set target debugging."), _("\ |
4283 | Show target debugging."), _("\ | |
333dabeb DJ |
4284 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
4285 | verbose. Changes do not take effect until the next \"run\" or \"target\"\n\ | |
85c07804 | 4286 | command."), |
ccce17b0 YQ |
4287 | NULL, |
4288 | show_targetdebug, | |
4289 | &setdebuglist, &showdebuglist); | |
3a11626d | 4290 | |
2bc416ba | 4291 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
4292 | &trust_readonly, _("\ |
4293 | Set mode for reading from readonly sections."), _("\ | |
4294 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
4295 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
4296 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 4297 | result in significant performance improvement for remote targets."), |
2c5b56ce | 4298 | NULL, |
920d2a44 | 4299 | show_trust_readonly, |
e707bbc2 | 4300 | &setlist, &showlist); |
96baa820 JM |
4301 | |
4302 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 4303 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 4304 | |
87680a14 JB |
4305 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
4306 | _("Print the name of each layer of the internal target stack."), | |
4307 | &maintenanceprintlist); | |
4308 | ||
c6ebd6cf VP |
4309 | add_setshow_boolean_cmd ("target-async", no_class, |
4310 | &target_async_permitted_1, _("\ | |
4311 | Set whether gdb controls the inferior in asynchronous mode."), _("\ | |
4312 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
4313 | Tells gdb whether to control the inferior in asynchronous mode."), | |
9401a810 PA |
4314 | set_target_async_command, |
4315 | show_target_async_command, | |
c6ebd6cf VP |
4316 | &setlist, |
4317 | &showlist); | |
4318 | ||
d914c394 SS |
4319 | add_setshow_boolean_cmd ("may-write-registers", class_support, |
4320 | &may_write_registers_1, _("\ | |
4321 | Set permission to write into registers."), _("\ | |
4322 | Show permission to write into registers."), _("\ | |
4323 | When this permission is on, GDB may write into the target's registers.\n\ | |
4324 | Otherwise, any sort of write attempt will result in an error."), | |
4325 | set_target_permissions, NULL, | |
4326 | &setlist, &showlist); | |
4327 | ||
4328 | add_setshow_boolean_cmd ("may-write-memory", class_support, | |
4329 | &may_write_memory_1, _("\ | |
4330 | Set permission to write into target memory."), _("\ | |
4331 | Show permission to write into target memory."), _("\ | |
4332 | When this permission is on, GDB may write into the target's memory.\n\ | |
4333 | Otherwise, any sort of write attempt will result in an error."), | |
4334 | set_write_memory_permission, NULL, | |
4335 | &setlist, &showlist); | |
4336 | ||
4337 | add_setshow_boolean_cmd ("may-insert-breakpoints", class_support, | |
4338 | &may_insert_breakpoints_1, _("\ | |
4339 | Set permission to insert breakpoints in the target."), _("\ | |
4340 | Show permission to insert breakpoints in the target."), _("\ | |
4341 | When this permission is on, GDB may insert breakpoints in the program.\n\ | |
4342 | Otherwise, any sort of insertion attempt will result in an error."), | |
4343 | set_target_permissions, NULL, | |
4344 | &setlist, &showlist); | |
4345 | ||
4346 | add_setshow_boolean_cmd ("may-insert-tracepoints", class_support, | |
4347 | &may_insert_tracepoints_1, _("\ | |
4348 | Set permission to insert tracepoints in the target."), _("\ | |
4349 | Show permission to insert tracepoints in the target."), _("\ | |
4350 | When this permission is on, GDB may insert tracepoints in the program.\n\ | |
4351 | Otherwise, any sort of insertion attempt will result in an error."), | |
4352 | set_target_permissions, NULL, | |
4353 | &setlist, &showlist); | |
4354 | ||
4355 | add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support, | |
4356 | &may_insert_fast_tracepoints_1, _("\ | |
4357 | Set permission to insert fast tracepoints in the target."), _("\ | |
4358 | Show permission to insert fast tracepoints in the target."), _("\ | |
4359 | When this permission is on, GDB may insert fast tracepoints.\n\ | |
4360 | Otherwise, any sort of insertion attempt will result in an error."), | |
4361 | set_target_permissions, NULL, | |
4362 | &setlist, &showlist); | |
4363 | ||
4364 | add_setshow_boolean_cmd ("may-interrupt", class_support, | |
4365 | &may_stop_1, _("\ | |
4366 | Set permission to interrupt or signal the target."), _("\ | |
4367 | Show permission to interrupt or signal the target."), _("\ | |
4368 | When this permission is on, GDB may interrupt/stop the target's execution.\n\ | |
4369 | Otherwise, any attempt to interrupt or stop will be ignored."), | |
4370 | set_target_permissions, NULL, | |
4371 | &setlist, &showlist); | |
c906108c | 4372 | } |