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 | |
a14ed312 | 78 | static int nomemory (CORE_ADDR, char *, int, int, struct target_ops *); |
c906108c | 79 | |
a14ed312 | 80 | static int return_zero (void); |
c906108c | 81 | |
a14ed312 | 82 | void target_ignore (void); |
c906108c | 83 | |
a14ed312 | 84 | static void target_command (char *, int); |
c906108c | 85 | |
a14ed312 | 86 | static struct target_ops *find_default_run_target (char *); |
c906108c | 87 | |
4ac248ca YQ |
88 | static target_xfer_partial_ftype default_xfer_partial; |
89 | ||
c2250ad1 UW |
90 | static struct gdbarch *default_thread_architecture (struct target_ops *ops, |
91 | ptid_t ptid); | |
92 | ||
0b5a2719 TT |
93 | static int dummy_find_memory_regions (struct target_ops *self, |
94 | find_memory_region_ftype ignore1, | |
95 | void *ignore2); | |
96 | ||
16f796b1 TT |
97 | static char *dummy_make_corefile_notes (struct target_ops *self, |
98 | bfd *ignore1, int *ignore2); | |
99 | ||
770234d3 TT |
100 | static char *default_pid_to_str (struct target_ops *ops, ptid_t ptid); |
101 | ||
6b84065d TT |
102 | static int find_default_can_async_p (struct target_ops *ignore); |
103 | ||
104 | static int find_default_is_async_p (struct target_ops *ignore); | |
105 | ||
fe31bf5b TT |
106 | static enum exec_direction_kind default_execution_direction |
107 | (struct target_ops *self); | |
108 | ||
1101cb7b TT |
109 | #include "target-delegates.c" |
110 | ||
a14ed312 | 111 | static void init_dummy_target (void); |
c906108c | 112 | |
aa869812 AC |
113 | static struct target_ops debug_target; |
114 | ||
a14ed312 | 115 | static void debug_to_open (char *, int); |
c906108c | 116 | |
f32dbf8c MM |
117 | static void debug_to_prepare_to_store (struct target_ops *self, |
118 | struct regcache *); | |
c906108c | 119 | |
a14ed312 | 120 | static void debug_to_files_info (struct target_ops *); |
c906108c | 121 | |
3db08215 | 122 | static int debug_to_insert_breakpoint (struct target_ops *, struct gdbarch *, |
a6d9a66e | 123 | struct bp_target_info *); |
c906108c | 124 | |
3db08215 | 125 | static int debug_to_remove_breakpoint (struct target_ops *, struct gdbarch *, |
a6d9a66e | 126 | struct bp_target_info *); |
c906108c | 127 | |
5461485a TT |
128 | static int debug_to_can_use_hw_breakpoint (struct target_ops *self, |
129 | int, int, int); | |
ccaa32c7 | 130 | |
23a26771 TT |
131 | static int debug_to_insert_hw_breakpoint (struct target_ops *self, |
132 | struct gdbarch *, | |
a6d9a66e | 133 | struct bp_target_info *); |
ccaa32c7 | 134 | |
a64dc96c TT |
135 | static int debug_to_remove_hw_breakpoint (struct target_ops *self, |
136 | struct gdbarch *, | |
a6d9a66e | 137 | struct bp_target_info *); |
ccaa32c7 | 138 | |
7bb99c53 TT |
139 | static int debug_to_insert_watchpoint (struct target_ops *self, |
140 | CORE_ADDR, int, int, | |
0cf6dd15 | 141 | struct expression *); |
ccaa32c7 | 142 | |
11b5219a TT |
143 | static int debug_to_remove_watchpoint (struct target_ops *self, |
144 | CORE_ADDR, int, int, | |
0cf6dd15 | 145 | struct expression *); |
ccaa32c7 | 146 | |
4aa7a7f5 | 147 | static int debug_to_stopped_data_address (struct target_ops *, CORE_ADDR *); |
ccaa32c7 | 148 | |
5009afc5 AS |
149 | static int debug_to_watchpoint_addr_within_range (struct target_ops *, |
150 | CORE_ADDR, CORE_ADDR, int); | |
151 | ||
31568a15 TT |
152 | static int debug_to_region_ok_for_hw_watchpoint (struct target_ops *self, |
153 | CORE_ADDR, int); | |
e0d24f8d | 154 | |
c3a5ff89 TT |
155 | static int debug_to_can_accel_watchpoint_condition (struct target_ops *self, |
156 | CORE_ADDR, int, int, | |
0cf6dd15 TJB |
157 | struct expression *); |
158 | ||
c42bf286 | 159 | static void debug_to_terminal_init (struct target_ops *self); |
c906108c | 160 | |
d2f640d4 | 161 | static void debug_to_terminal_inferior (struct target_ops *self); |
c906108c | 162 | |
2e1e1a19 | 163 | static void debug_to_terminal_ours_for_output (struct target_ops *self); |
c906108c | 164 | |
ae3bd431 | 165 | static void debug_to_terminal_save_ours (struct target_ops *self); |
a790ad35 | 166 | |
e3594fd1 | 167 | static void debug_to_terminal_ours (struct target_ops *self); |
c906108c | 168 | |
71a9f134 | 169 | static void debug_to_load (struct target_ops *self, char *, int); |
c906108c | 170 | |
da82bd6b | 171 | static int debug_to_can_run (struct target_ops *self); |
c906108c | 172 | |
1eab8a48 | 173 | static void debug_to_stop (struct target_ops *self, ptid_t); |
c906108c | 174 | |
c906108c | 175 | /* Pointer to array of target architecture structures; the size of the |
2bc416ba | 176 | array; the current index into the array; the allocated size of the |
c906108c SS |
177 | array. */ |
178 | struct target_ops **target_structs; | |
179 | unsigned target_struct_size; | |
c906108c SS |
180 | unsigned target_struct_allocsize; |
181 | #define DEFAULT_ALLOCSIZE 10 | |
182 | ||
183 | /* The initial current target, so that there is always a semi-valid | |
184 | current target. */ | |
185 | ||
186 | static struct target_ops dummy_target; | |
187 | ||
188 | /* Top of target stack. */ | |
189 | ||
258b763a | 190 | static struct target_ops *target_stack; |
c906108c SS |
191 | |
192 | /* The target structure we are currently using to talk to a process | |
193 | or file or whatever "inferior" we have. */ | |
194 | ||
195 | struct target_ops current_target; | |
196 | ||
197 | /* Command list for target. */ | |
198 | ||
199 | static struct cmd_list_element *targetlist = NULL; | |
200 | ||
cf7a04e8 DJ |
201 | /* Nonzero if we should trust readonly sections from the |
202 | executable when reading memory. */ | |
203 | ||
204 | static int trust_readonly = 0; | |
205 | ||
8defab1a DJ |
206 | /* Nonzero if we should show true memory content including |
207 | memory breakpoint inserted by gdb. */ | |
208 | ||
209 | static int show_memory_breakpoints = 0; | |
210 | ||
d914c394 SS |
211 | /* These globals control whether GDB attempts to perform these |
212 | operations; they are useful for targets that need to prevent | |
213 | inadvertant disruption, such as in non-stop mode. */ | |
214 | ||
215 | int may_write_registers = 1; | |
216 | ||
217 | int may_write_memory = 1; | |
218 | ||
219 | int may_insert_breakpoints = 1; | |
220 | ||
221 | int may_insert_tracepoints = 1; | |
222 | ||
223 | int may_insert_fast_tracepoints = 1; | |
224 | ||
225 | int may_stop = 1; | |
226 | ||
c906108c SS |
227 | /* Non-zero if we want to see trace of target level stuff. */ |
228 | ||
ccce17b0 | 229 | static unsigned int targetdebug = 0; |
920d2a44 AC |
230 | static void |
231 | show_targetdebug (struct ui_file *file, int from_tty, | |
232 | struct cmd_list_element *c, const char *value) | |
233 | { | |
234 | fprintf_filtered (file, _("Target debugging is %s.\n"), value); | |
235 | } | |
c906108c | 236 | |
a14ed312 | 237 | static void setup_target_debug (void); |
c906108c | 238 | |
c906108c SS |
239 | /* The user just typed 'target' without the name of a target. */ |
240 | ||
c906108c | 241 | static void |
fba45db2 | 242 | target_command (char *arg, int from_tty) |
c906108c SS |
243 | { |
244 | fputs_filtered ("Argument required (target name). Try `help target'\n", | |
245 | gdb_stdout); | |
246 | } | |
247 | ||
c35b1492 PA |
248 | /* Default target_has_* methods for process_stratum targets. */ |
249 | ||
250 | int | |
251 | default_child_has_all_memory (struct target_ops *ops) | |
252 | { | |
253 | /* If no inferior selected, then we can't read memory here. */ | |
254 | if (ptid_equal (inferior_ptid, null_ptid)) | |
255 | return 0; | |
256 | ||
257 | return 1; | |
258 | } | |
259 | ||
260 | int | |
261 | default_child_has_memory (struct target_ops *ops) | |
262 | { | |
263 | /* If no inferior selected, then we can't read memory here. */ | |
264 | if (ptid_equal (inferior_ptid, null_ptid)) | |
265 | return 0; | |
266 | ||
267 | return 1; | |
268 | } | |
269 | ||
270 | int | |
271 | default_child_has_stack (struct target_ops *ops) | |
272 | { | |
273 | /* If no inferior selected, there's no stack. */ | |
274 | if (ptid_equal (inferior_ptid, null_ptid)) | |
275 | return 0; | |
276 | ||
277 | return 1; | |
278 | } | |
279 | ||
280 | int | |
281 | default_child_has_registers (struct target_ops *ops) | |
282 | { | |
283 | /* Can't read registers from no inferior. */ | |
284 | if (ptid_equal (inferior_ptid, null_ptid)) | |
285 | return 0; | |
286 | ||
287 | return 1; | |
288 | } | |
289 | ||
290 | int | |
aeaec162 | 291 | default_child_has_execution (struct target_ops *ops, ptid_t the_ptid) |
c35b1492 PA |
292 | { |
293 | /* If there's no thread selected, then we can't make it run through | |
294 | hoops. */ | |
aeaec162 | 295 | if (ptid_equal (the_ptid, null_ptid)) |
c35b1492 PA |
296 | return 0; |
297 | ||
298 | return 1; | |
299 | } | |
300 | ||
301 | ||
302 | int | |
303 | target_has_all_memory_1 (void) | |
304 | { | |
305 | struct target_ops *t; | |
306 | ||
307 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
308 | if (t->to_has_all_memory (t)) | |
309 | return 1; | |
310 | ||
311 | return 0; | |
312 | } | |
313 | ||
314 | int | |
315 | target_has_memory_1 (void) | |
316 | { | |
317 | struct target_ops *t; | |
318 | ||
319 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
320 | if (t->to_has_memory (t)) | |
321 | return 1; | |
322 | ||
323 | return 0; | |
324 | } | |
325 | ||
326 | int | |
327 | target_has_stack_1 (void) | |
328 | { | |
329 | struct target_ops *t; | |
330 | ||
331 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
332 | if (t->to_has_stack (t)) | |
333 | return 1; | |
334 | ||
335 | return 0; | |
336 | } | |
337 | ||
338 | int | |
339 | target_has_registers_1 (void) | |
340 | { | |
341 | struct target_ops *t; | |
342 | ||
343 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
344 | if (t->to_has_registers (t)) | |
345 | return 1; | |
346 | ||
347 | return 0; | |
348 | } | |
349 | ||
350 | int | |
aeaec162 | 351 | target_has_execution_1 (ptid_t the_ptid) |
c35b1492 PA |
352 | { |
353 | struct target_ops *t; | |
354 | ||
355 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
aeaec162 | 356 | if (t->to_has_execution (t, the_ptid)) |
c35b1492 PA |
357 | return 1; |
358 | ||
359 | return 0; | |
360 | } | |
361 | ||
aeaec162 TT |
362 | int |
363 | target_has_execution_current (void) | |
364 | { | |
365 | return target_has_execution_1 (inferior_ptid); | |
366 | } | |
367 | ||
c22a2b88 TT |
368 | /* Complete initialization of T. This ensures that various fields in |
369 | T are set, if needed by the target implementation. */ | |
c906108c SS |
370 | |
371 | void | |
c22a2b88 | 372 | complete_target_initialization (struct target_ops *t) |
c906108c | 373 | { |
0088c768 | 374 | /* Provide default values for all "must have" methods. */ |
0b603eba AC |
375 | if (t->to_xfer_partial == NULL) |
376 | t->to_xfer_partial = default_xfer_partial; | |
0088c768 | 377 | |
c35b1492 PA |
378 | if (t->to_has_all_memory == NULL) |
379 | t->to_has_all_memory = (int (*) (struct target_ops *)) return_zero; | |
380 | ||
381 | if (t->to_has_memory == NULL) | |
382 | t->to_has_memory = (int (*) (struct target_ops *)) return_zero; | |
383 | ||
384 | if (t->to_has_stack == NULL) | |
385 | t->to_has_stack = (int (*) (struct target_ops *)) return_zero; | |
386 | ||
387 | if (t->to_has_registers == NULL) | |
388 | t->to_has_registers = (int (*) (struct target_ops *)) return_zero; | |
389 | ||
390 | if (t->to_has_execution == NULL) | |
aeaec162 | 391 | t->to_has_execution = (int (*) (struct target_ops *, ptid_t)) return_zero; |
1101cb7b TT |
392 | |
393 | install_delegators (t); | |
c22a2b88 TT |
394 | } |
395 | ||
396 | /* Add possible target architecture T to the list and add a new | |
397 | command 'target T->to_shortname'. Set COMPLETER as the command's | |
398 | completer if not NULL. */ | |
399 | ||
400 | void | |
401 | add_target_with_completer (struct target_ops *t, | |
402 | completer_ftype *completer) | |
403 | { | |
404 | struct cmd_list_element *c; | |
405 | ||
406 | complete_target_initialization (t); | |
c35b1492 | 407 | |
c906108c SS |
408 | if (!target_structs) |
409 | { | |
410 | target_struct_allocsize = DEFAULT_ALLOCSIZE; | |
411 | target_structs = (struct target_ops **) xmalloc | |
412 | (target_struct_allocsize * sizeof (*target_structs)); | |
413 | } | |
414 | if (target_struct_size >= target_struct_allocsize) | |
415 | { | |
416 | target_struct_allocsize *= 2; | |
417 | target_structs = (struct target_ops **) | |
c5aa993b JM |
418 | xrealloc ((char *) target_structs, |
419 | target_struct_allocsize * sizeof (*target_structs)); | |
c906108c SS |
420 | } |
421 | target_structs[target_struct_size++] = t; | |
c906108c SS |
422 | |
423 | if (targetlist == NULL) | |
1bedd215 AC |
424 | add_prefix_cmd ("target", class_run, target_command, _("\ |
425 | Connect to a target machine or process.\n\ | |
c906108c SS |
426 | The first argument is the type or protocol of the target machine.\n\ |
427 | Remaining arguments are interpreted by the target protocol. For more\n\ | |
428 | information on the arguments for a particular protocol, type\n\ | |
1bedd215 | 429 | `help target ' followed by the protocol name."), |
c906108c | 430 | &targetlist, "target ", 0, &cmdlist); |
9852c492 YQ |
431 | c = add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc, |
432 | &targetlist); | |
433 | if (completer != NULL) | |
434 | set_cmd_completer (c, completer); | |
435 | } | |
436 | ||
437 | /* Add a possible target architecture to the list. */ | |
438 | ||
439 | void | |
440 | add_target (struct target_ops *t) | |
441 | { | |
442 | add_target_with_completer (t, NULL); | |
c906108c SS |
443 | } |
444 | ||
b48d48eb MM |
445 | /* See target.h. */ |
446 | ||
447 | void | |
448 | add_deprecated_target_alias (struct target_ops *t, char *alias) | |
449 | { | |
450 | struct cmd_list_element *c; | |
451 | char *alt; | |
452 | ||
453 | /* If we use add_alias_cmd, here, we do not get the deprecated warning, | |
454 | see PR cli/15104. */ | |
455 | c = add_cmd (alias, no_class, t->to_open, t->to_doc, &targetlist); | |
456 | alt = xstrprintf ("target %s", t->to_shortname); | |
457 | deprecate_cmd (c, alt); | |
458 | } | |
459 | ||
c906108c SS |
460 | /* Stub functions */ |
461 | ||
462 | void | |
fba45db2 | 463 | target_ignore (void) |
c906108c SS |
464 | { |
465 | } | |
466 | ||
7d85a9c0 JB |
467 | void |
468 | target_kill (void) | |
469 | { | |
423a4807 TT |
470 | if (targetdebug) |
471 | fprintf_unfiltered (gdb_stdlog, "target_kill ()\n"); | |
7d85a9c0 | 472 | |
423a4807 | 473 | current_target.to_kill (¤t_target); |
7d85a9c0 JB |
474 | } |
475 | ||
11cf8741 JM |
476 | void |
477 | target_load (char *arg, int from_tty) | |
478 | { | |
4e5d721f | 479 | target_dcache_invalidate (); |
71a9f134 | 480 | (*current_target.to_load) (¤t_target, arg, from_tty); |
11cf8741 JM |
481 | } |
482 | ||
947b8855 PA |
483 | void |
484 | target_create_inferior (char *exec_file, char *args, | |
485 | char **env, int from_tty) | |
136d6dae VP |
486 | { |
487 | struct target_ops *t; | |
5d502164 | 488 | |
136d6dae VP |
489 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
490 | { | |
491 | if (t->to_create_inferior != NULL) | |
492 | { | |
493 | t->to_create_inferior (t, exec_file, args, env, from_tty); | |
947b8855 PA |
494 | if (targetdebug) |
495 | fprintf_unfiltered (gdb_stdlog, | |
496 | "target_create_inferior (%s, %s, xxx, %d)\n", | |
497 | exec_file, args, from_tty); | |
136d6dae VP |
498 | return; |
499 | } | |
500 | } | |
501 | ||
502 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 503 | _("could not find a target to create inferior")); |
136d6dae VP |
504 | } |
505 | ||
d9d2d8b6 PA |
506 | void |
507 | target_terminal_inferior (void) | |
508 | { | |
509 | /* A background resume (``run&'') should leave GDB in control of the | |
c378eb4e | 510 | terminal. Use target_can_async_p, not target_is_async_p, since at |
ba7f6c64 VP |
511 | this point the target is not async yet. However, if sync_execution |
512 | is not set, we know it will become async prior to resume. */ | |
513 | if (target_can_async_p () && !sync_execution) | |
d9d2d8b6 PA |
514 | return; |
515 | ||
516 | /* If GDB is resuming the inferior in the foreground, install | |
517 | inferior's terminal modes. */ | |
d2f640d4 | 518 | (*current_target.to_terminal_inferior) (¤t_target); |
d9d2d8b6 | 519 | } |
136d6dae | 520 | |
c906108c | 521 | static int |
fba45db2 KB |
522 | nomemory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
523 | struct target_ops *t) | |
c906108c | 524 | { |
c378eb4e MS |
525 | errno = EIO; /* Can't read/write this location. */ |
526 | return 0; /* No bytes handled. */ | |
c906108c SS |
527 | } |
528 | ||
529 | static void | |
fba45db2 | 530 | tcomplain (void) |
c906108c | 531 | { |
8a3fe4f8 | 532 | error (_("You can't do that when your target is `%s'"), |
c906108c SS |
533 | current_target.to_shortname); |
534 | } | |
535 | ||
536 | void | |
fba45db2 | 537 | noprocess (void) |
c906108c | 538 | { |
8a3fe4f8 | 539 | error (_("You can't do that without a process to debug.")); |
c906108c SS |
540 | } |
541 | ||
c906108c | 542 | static void |
0a4f40a2 | 543 | default_terminal_info (struct target_ops *self, const char *args, int from_tty) |
c906108c | 544 | { |
a3f17187 | 545 | printf_unfiltered (_("No saved terminal information.\n")); |
c906108c SS |
546 | } |
547 | ||
0ef643c8 JB |
548 | /* A default implementation for the to_get_ada_task_ptid target method. |
549 | ||
550 | This function builds the PTID by using both LWP and TID as part of | |
551 | the PTID lwp and tid elements. The pid used is the pid of the | |
552 | inferior_ptid. */ | |
553 | ||
2c0b251b | 554 | static ptid_t |
1e6b91a4 | 555 | default_get_ada_task_ptid (struct target_ops *self, long lwp, long tid) |
0ef643c8 JB |
556 | { |
557 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid); | |
558 | } | |
559 | ||
32231432 | 560 | static enum exec_direction_kind |
4c612759 | 561 | default_execution_direction (struct target_ops *self) |
32231432 PA |
562 | { |
563 | if (!target_can_execute_reverse) | |
564 | return EXEC_FORWARD; | |
565 | else if (!target_can_async_p ()) | |
566 | return EXEC_FORWARD; | |
567 | else | |
568 | gdb_assert_not_reached ("\ | |
569 | to_execution_direction must be implemented for reverse async"); | |
570 | } | |
571 | ||
7998dfc3 AC |
572 | /* Go through the target stack from top to bottom, copying over zero |
573 | entries in current_target, then filling in still empty entries. In | |
574 | effect, we are doing class inheritance through the pushed target | |
575 | vectors. | |
576 | ||
577 | NOTE: cagney/2003-10-17: The problem with this inheritance, as it | |
578 | is currently implemented, is that it discards any knowledge of | |
579 | which target an inherited method originally belonged to. | |
580 | Consequently, new new target methods should instead explicitly and | |
581 | locally search the target stack for the target that can handle the | |
582 | request. */ | |
c906108c SS |
583 | |
584 | static void | |
7998dfc3 | 585 | update_current_target (void) |
c906108c | 586 | { |
7998dfc3 AC |
587 | struct target_ops *t; |
588 | ||
08d8bcd7 | 589 | /* First, reset current's contents. */ |
7998dfc3 AC |
590 | memset (¤t_target, 0, sizeof (current_target)); |
591 | ||
1101cb7b TT |
592 | /* Install the delegators. */ |
593 | install_delegators (¤t_target); | |
594 | ||
be4ddd36 TT |
595 | current_target.to_stratum = target_stack->to_stratum; |
596 | ||
7998dfc3 AC |
597 | #define INHERIT(FIELD, TARGET) \ |
598 | if (!current_target.FIELD) \ | |
599 | current_target.FIELD = (TARGET)->FIELD | |
600 | ||
be4ddd36 TT |
601 | /* Do not add any new INHERITs here. Instead, use the delegation |
602 | mechanism provided by make-target-delegates. */ | |
7998dfc3 AC |
603 | for (t = target_stack; t; t = t->beneath) |
604 | { | |
605 | INHERIT (to_shortname, t); | |
606 | INHERIT (to_longname, t); | |
607 | INHERIT (to_doc, t); | |
dc177b7a | 608 | INHERIT (to_attach_no_wait, t); |
c8e73a31 | 609 | INHERIT (deprecated_xfer_memory, t); |
74174d2e | 610 | INHERIT (to_have_steppable_watchpoint, t); |
7998dfc3 | 611 | INHERIT (to_have_continuable_watchpoint, t); |
7998dfc3 | 612 | INHERIT (to_has_thread_control, t); |
7998dfc3 AC |
613 | INHERIT (to_magic, t); |
614 | } | |
615 | #undef INHERIT | |
616 | ||
617 | /* Clean up a target struct so it no longer has any zero pointers in | |
be4ddd36 TT |
618 | it. Do not add any new de_faults here. Instead, use the |
619 | delegation mechanism provided by make-target-delegates. */ | |
c906108c SS |
620 | |
621 | #define de_fault(field, value) \ | |
7998dfc3 AC |
622 | if (!current_target.field) \ |
623 | current_target.field = value | |
0d06e24b | 624 | |
2bc416ba DJ |
625 | de_fault (to_open, |
626 | (void (*) (char *, int)) | |
0d06e24b | 627 | tcomplain); |
2bc416ba | 628 | de_fault (to_close, |
de90e03d | 629 | (void (*) (struct target_ops *)) |
0d06e24b | 630 | target_ignore); |
2bc416ba | 631 | de_fault (deprecated_xfer_memory, |
3e43a32a MS |
632 | (int (*) (CORE_ADDR, gdb_byte *, int, int, |
633 | struct mem_attrib *, struct target_ops *)) | |
0d06e24b | 634 | nomemory); |
32231432 | 635 | |
c906108c | 636 | #undef de_fault |
c906108c | 637 | |
7998dfc3 AC |
638 | /* Finally, position the target-stack beneath the squashed |
639 | "current_target". That way code looking for a non-inherited | |
640 | target method can quickly and simply find it. */ | |
641 | current_target.beneath = target_stack; | |
b4b61fdb DJ |
642 | |
643 | if (targetdebug) | |
644 | setup_target_debug (); | |
c906108c SS |
645 | } |
646 | ||
647 | /* Push a new target type into the stack of the existing target accessors, | |
648 | possibly superseding some of the existing accessors. | |
649 | ||
c906108c SS |
650 | Rather than allow an empty stack, we always have the dummy target at |
651 | the bottom stratum, so we can call the function vectors without | |
652 | checking them. */ | |
653 | ||
b26a4dcb | 654 | void |
fba45db2 | 655 | push_target (struct target_ops *t) |
c906108c | 656 | { |
258b763a | 657 | struct target_ops **cur; |
c906108c SS |
658 | |
659 | /* Check magic number. If wrong, it probably means someone changed | |
660 | the struct definition, but not all the places that initialize one. */ | |
661 | if (t->to_magic != OPS_MAGIC) | |
662 | { | |
c5aa993b JM |
663 | fprintf_unfiltered (gdb_stderr, |
664 | "Magic number of %s target struct wrong\n", | |
665 | t->to_shortname); | |
3e43a32a MS |
666 | internal_error (__FILE__, __LINE__, |
667 | _("failed internal consistency check")); | |
c906108c SS |
668 | } |
669 | ||
258b763a AC |
670 | /* Find the proper stratum to install this target in. */ |
671 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
c906108c | 672 | { |
258b763a | 673 | if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum) |
c906108c SS |
674 | break; |
675 | } | |
676 | ||
258b763a | 677 | /* If there's already targets at this stratum, remove them. */ |
88c231eb | 678 | /* FIXME: cagney/2003-10-15: I think this should be popping all |
258b763a AC |
679 | targets to CUR, and not just those at this stratum level. */ |
680 | while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum) | |
681 | { | |
682 | /* There's already something at this stratum level. Close it, | |
683 | and un-hook it from the stack. */ | |
684 | struct target_ops *tmp = (*cur); | |
5d502164 | 685 | |
258b763a AC |
686 | (*cur) = (*cur)->beneath; |
687 | tmp->beneath = NULL; | |
460014f5 | 688 | target_close (tmp); |
258b763a | 689 | } |
c906108c SS |
690 | |
691 | /* We have removed all targets in our stratum, now add the new one. */ | |
258b763a AC |
692 | t->beneath = (*cur); |
693 | (*cur) = t; | |
c906108c SS |
694 | |
695 | update_current_target (); | |
c906108c SS |
696 | } |
697 | ||
2bc416ba | 698 | /* Remove a target_ops vector from the stack, wherever it may be. |
c906108c SS |
699 | Return how many times it was removed (0 or 1). */ |
700 | ||
701 | int | |
fba45db2 | 702 | unpush_target (struct target_ops *t) |
c906108c | 703 | { |
258b763a AC |
704 | struct target_ops **cur; |
705 | struct target_ops *tmp; | |
c906108c | 706 | |
c8d104ad PA |
707 | if (t->to_stratum == dummy_stratum) |
708 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 709 | _("Attempt to unpush the dummy target")); |
c8d104ad | 710 | |
c906108c | 711 | /* Look for the specified target. Note that we assume that a target |
c378eb4e | 712 | can only occur once in the target stack. */ |
c906108c | 713 | |
258b763a AC |
714 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) |
715 | { | |
716 | if ((*cur) == t) | |
717 | break; | |
718 | } | |
c906108c | 719 | |
305436e0 PA |
720 | /* If we don't find target_ops, quit. Only open targets should be |
721 | closed. */ | |
258b763a | 722 | if ((*cur) == NULL) |
305436e0 | 723 | return 0; |
5269965e | 724 | |
c378eb4e | 725 | /* Unchain the target. */ |
258b763a AC |
726 | tmp = (*cur); |
727 | (*cur) = (*cur)->beneath; | |
728 | tmp->beneath = NULL; | |
c906108c SS |
729 | |
730 | update_current_target (); | |
c906108c | 731 | |
305436e0 PA |
732 | /* Finally close the target. Note we do this after unchaining, so |
733 | any target method calls from within the target_close | |
734 | implementation don't end up in T anymore. */ | |
460014f5 | 735 | target_close (t); |
305436e0 | 736 | |
c906108c SS |
737 | return 1; |
738 | } | |
739 | ||
aa76d38d | 740 | void |
460014f5 | 741 | pop_all_targets_above (enum strata above_stratum) |
aa76d38d | 742 | { |
87ab71f0 | 743 | while ((int) (current_target.to_stratum) > (int) above_stratum) |
aa76d38d | 744 | { |
aa76d38d PA |
745 | if (!unpush_target (target_stack)) |
746 | { | |
747 | fprintf_unfiltered (gdb_stderr, | |
748 | "pop_all_targets couldn't find target %s\n", | |
b52323fa | 749 | target_stack->to_shortname); |
aa76d38d PA |
750 | internal_error (__FILE__, __LINE__, |
751 | _("failed internal consistency check")); | |
752 | break; | |
753 | } | |
754 | } | |
755 | } | |
756 | ||
87ab71f0 | 757 | void |
460014f5 | 758 | pop_all_targets (void) |
87ab71f0 | 759 | { |
460014f5 | 760 | pop_all_targets_above (dummy_stratum); |
87ab71f0 PA |
761 | } |
762 | ||
c0edd9ed JK |
763 | /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */ |
764 | ||
765 | int | |
766 | target_is_pushed (struct target_ops *t) | |
767 | { | |
768 | struct target_ops **cur; | |
769 | ||
770 | /* Check magic number. If wrong, it probably means someone changed | |
771 | the struct definition, but not all the places that initialize one. */ | |
772 | if (t->to_magic != OPS_MAGIC) | |
773 | { | |
774 | fprintf_unfiltered (gdb_stderr, | |
775 | "Magic number of %s target struct wrong\n", | |
776 | t->to_shortname); | |
3e43a32a MS |
777 | internal_error (__FILE__, __LINE__, |
778 | _("failed internal consistency check")); | |
c0edd9ed JK |
779 | } |
780 | ||
781 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
782 | if (*cur == t) | |
783 | return 1; | |
784 | ||
785 | return 0; | |
786 | } | |
787 | ||
72f5cf0e | 788 | /* Using the objfile specified in OBJFILE, find the address for the |
9e35dae4 DJ |
789 | current thread's thread-local storage with offset OFFSET. */ |
790 | CORE_ADDR | |
791 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) | |
792 | { | |
793 | volatile CORE_ADDR addr = 0; | |
117de6a9 PA |
794 | struct target_ops *target; |
795 | ||
796 | for (target = current_target.beneath; | |
797 | target != NULL; | |
798 | target = target->beneath) | |
799 | { | |
800 | if (target->to_get_thread_local_address != NULL) | |
801 | break; | |
802 | } | |
9e35dae4 | 803 | |
117de6a9 | 804 | if (target != NULL |
f5656ead | 805 | && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ())) |
9e35dae4 DJ |
806 | { |
807 | ptid_t ptid = inferior_ptid; | |
808 | volatile struct gdb_exception ex; | |
809 | ||
810 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
811 | { | |
812 | CORE_ADDR lm_addr; | |
813 | ||
814 | /* Fetch the load module address for this objfile. */ | |
f5656ead | 815 | lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch (), |
9e35dae4 DJ |
816 | objfile); |
817 | /* If it's 0, throw the appropriate exception. */ | |
818 | if (lm_addr == 0) | |
819 | throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR, | |
820 | _("TLS load module not found")); | |
821 | ||
3e43a32a MS |
822 | addr = target->to_get_thread_local_address (target, ptid, |
823 | lm_addr, offset); | |
9e35dae4 DJ |
824 | } |
825 | /* If an error occurred, print TLS related messages here. Otherwise, | |
826 | throw the error to some higher catcher. */ | |
827 | if (ex.reason < 0) | |
828 | { | |
829 | int objfile_is_library = (objfile->flags & OBJF_SHARED); | |
830 | ||
831 | switch (ex.error) | |
832 | { | |
833 | case TLS_NO_LIBRARY_SUPPORT_ERROR: | |
3e43a32a MS |
834 | error (_("Cannot find thread-local variables " |
835 | "in this thread library.")); | |
9e35dae4 DJ |
836 | break; |
837 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: | |
838 | if (objfile_is_library) | |
839 | error (_("Cannot find shared library `%s' in dynamic" | |
4262abfb | 840 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
841 | else |
842 | error (_("Cannot find executable file `%s' in dynamic" | |
4262abfb | 843 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
844 | break; |
845 | case TLS_NOT_ALLOCATED_YET_ERROR: | |
846 | if (objfile_is_library) | |
847 | error (_("The inferior has not yet allocated storage for" | |
848 | " thread-local variables in\n" | |
849 | "the shared library `%s'\n" | |
850 | "for %s"), | |
4262abfb | 851 | objfile_name (objfile), target_pid_to_str (ptid)); |
9e35dae4 DJ |
852 | else |
853 | error (_("The inferior has not yet allocated storage for" | |
854 | " thread-local variables in\n" | |
855 | "the executable `%s'\n" | |
856 | "for %s"), | |
4262abfb | 857 | objfile_name (objfile), target_pid_to_str (ptid)); |
9e35dae4 DJ |
858 | break; |
859 | case TLS_GENERIC_ERROR: | |
860 | if (objfile_is_library) | |
861 | error (_("Cannot find thread-local storage for %s, " | |
862 | "shared library %s:\n%s"), | |
863 | target_pid_to_str (ptid), | |
4262abfb | 864 | objfile_name (objfile), ex.message); |
9e35dae4 DJ |
865 | else |
866 | error (_("Cannot find thread-local storage for %s, " | |
867 | "executable file %s:\n%s"), | |
868 | target_pid_to_str (ptid), | |
4262abfb | 869 | objfile_name (objfile), ex.message); |
9e35dae4 DJ |
870 | break; |
871 | default: | |
872 | throw_exception (ex); | |
873 | break; | |
874 | } | |
875 | } | |
876 | } | |
877 | /* It wouldn't be wrong here to try a gdbarch method, too; finding | |
878 | TLS is an ABI-specific thing. But we don't do that yet. */ | |
879 | else | |
880 | error (_("Cannot find thread-local variables on this target")); | |
881 | ||
882 | return addr; | |
883 | } | |
884 | ||
6be7b56e | 885 | const char * |
9b409511 | 886 | target_xfer_status_to_string (enum target_xfer_status err) |
6be7b56e PA |
887 | { |
888 | #define CASE(X) case X: return #X | |
889 | switch (err) | |
890 | { | |
891 | CASE(TARGET_XFER_E_IO); | |
892 | CASE(TARGET_XFER_E_UNAVAILABLE); | |
893 | default: | |
894 | return "<unknown>"; | |
895 | } | |
896 | #undef CASE | |
897 | }; | |
898 | ||
899 | ||
c906108c SS |
900 | #undef MIN |
901 | #define MIN(A, B) (((A) <= (B)) ? (A) : (B)) | |
902 | ||
903 | /* target_read_string -- read a null terminated string, up to LEN bytes, | |
904 | from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful. | |
905 | Set *STRING to a pointer to malloc'd memory containing the data; the caller | |
906 | is responsible for freeing it. Return the number of bytes successfully | |
907 | read. */ | |
908 | ||
909 | int | |
fba45db2 | 910 | target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop) |
c906108c | 911 | { |
c2e8b827 | 912 | int tlen, offset, i; |
1b0ba102 | 913 | gdb_byte buf[4]; |
c906108c SS |
914 | int errcode = 0; |
915 | char *buffer; | |
916 | int buffer_allocated; | |
917 | char *bufptr; | |
918 | unsigned int nbytes_read = 0; | |
919 | ||
6217bf3e MS |
920 | gdb_assert (string); |
921 | ||
c906108c SS |
922 | /* Small for testing. */ |
923 | buffer_allocated = 4; | |
924 | buffer = xmalloc (buffer_allocated); | |
925 | bufptr = buffer; | |
926 | ||
c906108c SS |
927 | while (len > 0) |
928 | { | |
929 | tlen = MIN (len, 4 - (memaddr & 3)); | |
930 | offset = memaddr & 3; | |
931 | ||
1b0ba102 | 932 | errcode = target_read_memory (memaddr & ~3, buf, sizeof buf); |
c906108c SS |
933 | if (errcode != 0) |
934 | { | |
935 | /* The transfer request might have crossed the boundary to an | |
c378eb4e | 936 | unallocated region of memory. Retry the transfer, requesting |
c906108c SS |
937 | a single byte. */ |
938 | tlen = 1; | |
939 | offset = 0; | |
b8eb5af0 | 940 | errcode = target_read_memory (memaddr, buf, 1); |
c906108c SS |
941 | if (errcode != 0) |
942 | goto done; | |
943 | } | |
944 | ||
945 | if (bufptr - buffer + tlen > buffer_allocated) | |
946 | { | |
947 | unsigned int bytes; | |
5d502164 | 948 | |
c906108c SS |
949 | bytes = bufptr - buffer; |
950 | buffer_allocated *= 2; | |
951 | buffer = xrealloc (buffer, buffer_allocated); | |
952 | bufptr = buffer + bytes; | |
953 | } | |
954 | ||
955 | for (i = 0; i < tlen; i++) | |
956 | { | |
957 | *bufptr++ = buf[i + offset]; | |
958 | if (buf[i + offset] == '\000') | |
959 | { | |
960 | nbytes_read += i + 1; | |
961 | goto done; | |
962 | } | |
963 | } | |
964 | ||
965 | memaddr += tlen; | |
966 | len -= tlen; | |
967 | nbytes_read += tlen; | |
968 | } | |
c5aa993b | 969 | done: |
6217bf3e | 970 | *string = buffer; |
c906108c SS |
971 | if (errnop != NULL) |
972 | *errnop = errcode; | |
c906108c SS |
973 | return nbytes_read; |
974 | } | |
975 | ||
07b82ea5 PA |
976 | struct target_section_table * |
977 | target_get_section_table (struct target_ops *target) | |
978 | { | |
07b82ea5 PA |
979 | if (targetdebug) |
980 | fprintf_unfiltered (gdb_stdlog, "target_get_section_table ()\n"); | |
981 | ||
7e35c012 | 982 | return (*target->to_get_section_table) (target); |
07b82ea5 PA |
983 | } |
984 | ||
8db32d44 | 985 | /* Find a section containing ADDR. */ |
07b82ea5 | 986 | |
0542c86d | 987 | struct target_section * |
8db32d44 AC |
988 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
989 | { | |
07b82ea5 | 990 | struct target_section_table *table = target_get_section_table (target); |
0542c86d | 991 | struct target_section *secp; |
07b82ea5 PA |
992 | |
993 | if (table == NULL) | |
994 | return NULL; | |
995 | ||
996 | for (secp = table->sections; secp < table->sections_end; secp++) | |
8db32d44 AC |
997 | { |
998 | if (addr >= secp->addr && addr < secp->endaddr) | |
999 | return secp; | |
1000 | } | |
1001 | return NULL; | |
1002 | } | |
1003 | ||
e6e4e701 PA |
1004 | /* Read memory from the live target, even if currently inspecting a |
1005 | traceframe. The return is the same as that of target_read. */ | |
1006 | ||
9b409511 | 1007 | static enum target_xfer_status |
e6e4e701 | 1008 | target_read_live_memory (enum target_object object, |
9b409511 YQ |
1009 | ULONGEST memaddr, gdb_byte *myaddr, ULONGEST len, |
1010 | ULONGEST *xfered_len) | |
e6e4e701 | 1011 | { |
9b409511 | 1012 | enum target_xfer_status ret; |
e6e4e701 PA |
1013 | struct cleanup *cleanup; |
1014 | ||
1015 | /* Switch momentarily out of tfind mode so to access live memory. | |
1016 | Note that this must not clear global state, such as the frame | |
1017 | cache, which must still remain valid for the previous traceframe. | |
1018 | We may be _building_ the frame cache at this point. */ | |
1019 | cleanup = make_cleanup_restore_traceframe_number (); | |
1020 | set_traceframe_number (-1); | |
1021 | ||
9b409511 YQ |
1022 | ret = target_xfer_partial (current_target.beneath, object, NULL, |
1023 | myaddr, NULL, memaddr, len, xfered_len); | |
e6e4e701 PA |
1024 | |
1025 | do_cleanups (cleanup); | |
1026 | return ret; | |
1027 | } | |
1028 | ||
1029 | /* Using the set of read-only target sections of OPS, read live | |
1030 | read-only memory. Note that the actual reads start from the | |
5657161f PA |
1031 | top-most target again. |
1032 | ||
1033 | For interface/parameters/return description see target.h, | |
1034 | to_xfer_partial. */ | |
e6e4e701 | 1035 | |
9b409511 | 1036 | static enum target_xfer_status |
e6e4e701 PA |
1037 | memory_xfer_live_readonly_partial (struct target_ops *ops, |
1038 | enum target_object object, | |
1039 | gdb_byte *readbuf, ULONGEST memaddr, | |
9b409511 | 1040 | ULONGEST len, ULONGEST *xfered_len) |
e6e4e701 PA |
1041 | { |
1042 | struct target_section *secp; | |
1043 | struct target_section_table *table; | |
1044 | ||
1045 | secp = target_section_by_addr (ops, memaddr); | |
1046 | if (secp != NULL | |
2b2848e2 DE |
1047 | && (bfd_get_section_flags (secp->the_bfd_section->owner, |
1048 | secp->the_bfd_section) | |
e6e4e701 PA |
1049 | & SEC_READONLY)) |
1050 | { | |
1051 | struct target_section *p; | |
1052 | ULONGEST memend = memaddr + len; | |
1053 | ||
1054 | table = target_get_section_table (ops); | |
1055 | ||
1056 | for (p = table->sections; p < table->sections_end; p++) | |
1057 | { | |
1058 | if (memaddr >= p->addr) | |
1059 | { | |
1060 | if (memend <= p->endaddr) | |
1061 | { | |
1062 | /* Entire transfer is within this section. */ | |
1063 | return target_read_live_memory (object, memaddr, | |
9b409511 | 1064 | readbuf, len, xfered_len); |
e6e4e701 PA |
1065 | } |
1066 | else if (memaddr >= p->endaddr) | |
1067 | { | |
1068 | /* This section ends before the transfer starts. */ | |
1069 | continue; | |
1070 | } | |
1071 | else | |
1072 | { | |
1073 | /* This section overlaps the transfer. Just do half. */ | |
1074 | len = p->endaddr - memaddr; | |
1075 | return target_read_live_memory (object, memaddr, | |
9b409511 | 1076 | readbuf, len, xfered_len); |
e6e4e701 PA |
1077 | } |
1078 | } | |
1079 | } | |
1080 | } | |
1081 | ||
9b409511 | 1082 | return TARGET_XFER_EOF; |
e6e4e701 PA |
1083 | } |
1084 | ||
9f713294 YQ |
1085 | /* Read memory from more than one valid target. A core file, for |
1086 | instance, could have some of memory but delegate other bits to | |
1087 | the target below it. So, we must manually try all targets. */ | |
1088 | ||
9b409511 | 1089 | static enum target_xfer_status |
17fde6d0 | 1090 | raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf, |
9b409511 YQ |
1091 | const gdb_byte *writebuf, ULONGEST memaddr, LONGEST len, |
1092 | ULONGEST *xfered_len) | |
9f713294 | 1093 | { |
9b409511 | 1094 | enum target_xfer_status res; |
9f713294 YQ |
1095 | |
1096 | do | |
1097 | { | |
1098 | res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 YQ |
1099 | readbuf, writebuf, memaddr, len, |
1100 | xfered_len); | |
1101 | if (res == TARGET_XFER_OK) | |
9f713294 YQ |
1102 | break; |
1103 | ||
633785ff MM |
1104 | /* Stop if the target reports that the memory is not available. */ |
1105 | if (res == TARGET_XFER_E_UNAVAILABLE) | |
1106 | break; | |
1107 | ||
9f713294 YQ |
1108 | /* We want to continue past core files to executables, but not |
1109 | past a running target's memory. */ | |
1110 | if (ops->to_has_all_memory (ops)) | |
1111 | break; | |
1112 | ||
1113 | ops = ops->beneath; | |
1114 | } | |
1115 | while (ops != NULL); | |
1116 | ||
1117 | return res; | |
1118 | } | |
1119 | ||
7f79c47e DE |
1120 | /* Perform a partial memory transfer. |
1121 | For docs see target.h, to_xfer_partial. */ | |
cf7a04e8 | 1122 | |
9b409511 | 1123 | static enum target_xfer_status |
f0ba3972 | 1124 | memory_xfer_partial_1 (struct target_ops *ops, enum target_object object, |
17fde6d0 | 1125 | gdb_byte *readbuf, const gdb_byte *writebuf, ULONGEST memaddr, |
9b409511 | 1126 | ULONGEST len, ULONGEST *xfered_len) |
0779438d | 1127 | { |
9b409511 | 1128 | enum target_xfer_status res; |
cf7a04e8 DJ |
1129 | int reg_len; |
1130 | struct mem_region *region; | |
4e5d721f | 1131 | struct inferior *inf; |
cf7a04e8 | 1132 | |
07b82ea5 PA |
1133 | /* For accesses to unmapped overlay sections, read directly from |
1134 | files. Must do this first, as MEMADDR may need adjustment. */ | |
1135 | if (readbuf != NULL && overlay_debugging) | |
1136 | { | |
1137 | struct obj_section *section = find_pc_overlay (memaddr); | |
5d502164 | 1138 | |
07b82ea5 PA |
1139 | if (pc_in_unmapped_range (memaddr, section)) |
1140 | { | |
1141 | struct target_section_table *table | |
1142 | = target_get_section_table (ops); | |
1143 | const char *section_name = section->the_bfd_section->name; | |
5d502164 | 1144 | |
07b82ea5 PA |
1145 | memaddr = overlay_mapped_address (memaddr, section); |
1146 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 1147 | memaddr, len, xfered_len, |
07b82ea5 PA |
1148 | table->sections, |
1149 | table->sections_end, | |
1150 | section_name); | |
1151 | } | |
1152 | } | |
1153 | ||
1154 | /* Try the executable files, if "trust-readonly-sections" is set. */ | |
cf7a04e8 DJ |
1155 | if (readbuf != NULL && trust_readonly) |
1156 | { | |
0542c86d | 1157 | struct target_section *secp; |
07b82ea5 | 1158 | struct target_section_table *table; |
cf7a04e8 DJ |
1159 | |
1160 | secp = target_section_by_addr (ops, memaddr); | |
1161 | if (secp != NULL | |
2b2848e2 DE |
1162 | && (bfd_get_section_flags (secp->the_bfd_section->owner, |
1163 | secp->the_bfd_section) | |
cf7a04e8 | 1164 | & SEC_READONLY)) |
07b82ea5 PA |
1165 | { |
1166 | table = target_get_section_table (ops); | |
1167 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 1168 | memaddr, len, xfered_len, |
07b82ea5 PA |
1169 | table->sections, |
1170 | table->sections_end, | |
1171 | NULL); | |
1172 | } | |
98646950 UW |
1173 | } |
1174 | ||
e6e4e701 PA |
1175 | /* If reading unavailable memory in the context of traceframes, and |
1176 | this address falls within a read-only section, fallback to | |
1177 | reading from live memory. */ | |
1178 | if (readbuf != NULL && get_traceframe_number () != -1) | |
1179 | { | |
1180 | VEC(mem_range_s) *available; | |
1181 | ||
1182 | /* If we fail to get the set of available memory, then the | |
1183 | target does not support querying traceframe info, and so we | |
1184 | attempt reading from the traceframe anyway (assuming the | |
1185 | target implements the old QTro packet then). */ | |
1186 | if (traceframe_available_memory (&available, memaddr, len)) | |
1187 | { | |
1188 | struct cleanup *old_chain; | |
1189 | ||
1190 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available); | |
1191 | ||
1192 | if (VEC_empty (mem_range_s, available) | |
1193 | || VEC_index (mem_range_s, available, 0)->start != memaddr) | |
1194 | { | |
1195 | /* Don't read into the traceframe's available | |
1196 | memory. */ | |
1197 | if (!VEC_empty (mem_range_s, available)) | |
1198 | { | |
1199 | LONGEST oldlen = len; | |
1200 | ||
1201 | len = VEC_index (mem_range_s, available, 0)->start - memaddr; | |
1202 | gdb_assert (len <= oldlen); | |
1203 | } | |
1204 | ||
1205 | do_cleanups (old_chain); | |
1206 | ||
1207 | /* This goes through the topmost target again. */ | |
1208 | res = memory_xfer_live_readonly_partial (ops, object, | |
9b409511 YQ |
1209 | readbuf, memaddr, |
1210 | len, xfered_len); | |
1211 | if (res == TARGET_XFER_OK) | |
1212 | return TARGET_XFER_OK; | |
1213 | else | |
1214 | { | |
1215 | /* No use trying further, we know some memory starting | |
1216 | at MEMADDR isn't available. */ | |
1217 | *xfered_len = len; | |
1218 | return TARGET_XFER_E_UNAVAILABLE; | |
1219 | } | |
e6e4e701 PA |
1220 | } |
1221 | ||
1222 | /* Don't try to read more than how much is available, in | |
1223 | case the target implements the deprecated QTro packet to | |
1224 | cater for older GDBs (the target's knowledge of read-only | |
1225 | sections may be outdated by now). */ | |
1226 | len = VEC_index (mem_range_s, available, 0)->length; | |
1227 | ||
1228 | do_cleanups (old_chain); | |
1229 | } | |
1230 | } | |
1231 | ||
cf7a04e8 DJ |
1232 | /* Try GDB's internal data cache. */ |
1233 | region = lookup_mem_region (memaddr); | |
4b5752d0 VP |
1234 | /* region->hi == 0 means there's no upper bound. */ |
1235 | if (memaddr + len < region->hi || region->hi == 0) | |
cf7a04e8 DJ |
1236 | reg_len = len; |
1237 | else | |
1238 | reg_len = region->hi - memaddr; | |
1239 | ||
1240 | switch (region->attrib.mode) | |
1241 | { | |
1242 | case MEM_RO: | |
1243 | if (writebuf != NULL) | |
2ed4b548 | 1244 | return TARGET_XFER_E_IO; |
cf7a04e8 DJ |
1245 | break; |
1246 | ||
1247 | case MEM_WO: | |
1248 | if (readbuf != NULL) | |
2ed4b548 | 1249 | return TARGET_XFER_E_IO; |
cf7a04e8 | 1250 | break; |
a76d924d DJ |
1251 | |
1252 | case MEM_FLASH: | |
1253 | /* We only support writing to flash during "load" for now. */ | |
1254 | if (writebuf != NULL) | |
1255 | error (_("Writing to flash memory forbidden in this context")); | |
1256 | break; | |
4b5752d0 VP |
1257 | |
1258 | case MEM_NONE: | |
2ed4b548 | 1259 | return TARGET_XFER_E_IO; |
cf7a04e8 DJ |
1260 | } |
1261 | ||
6c95b8df PA |
1262 | if (!ptid_equal (inferior_ptid, null_ptid)) |
1263 | inf = find_inferior_pid (ptid_get_pid (inferior_ptid)); | |
1264 | else | |
1265 | inf = NULL; | |
4e5d721f DE |
1266 | |
1267 | if (inf != NULL | |
2f4d8875 PA |
1268 | /* The dcache reads whole cache lines; that doesn't play well |
1269 | with reading from a trace buffer, because reading outside of | |
1270 | the collected memory range fails. */ | |
1271 | && get_traceframe_number () == -1 | |
4e5d721f | 1272 | && (region->attrib.cache |
29453a14 YQ |
1273 | || (stack_cache_enabled_p () && object == TARGET_OBJECT_STACK_MEMORY) |
1274 | || (code_cache_enabled_p () && object == TARGET_OBJECT_CODE_MEMORY))) | |
cf7a04e8 | 1275 | { |
2a2f9fe4 | 1276 | DCACHE *dcache = target_dcache_get_or_init (); |
9b409511 | 1277 | int l; |
2a2f9fe4 | 1278 | |
cf7a04e8 | 1279 | if (readbuf != NULL) |
9b409511 | 1280 | l = dcache_xfer_memory (ops, dcache, memaddr, readbuf, reg_len, 0); |
cf7a04e8 DJ |
1281 | else |
1282 | /* FIXME drow/2006-08-09: If we're going to preserve const | |
1283 | correctness dcache_xfer_memory should take readbuf and | |
1284 | writebuf. */ | |
9b409511 | 1285 | l = dcache_xfer_memory (ops, dcache, memaddr, (void *) writebuf, |
cf7a04e8 | 1286 | reg_len, 1); |
9b409511 YQ |
1287 | if (l <= 0) |
1288 | return TARGET_XFER_E_IO; | |
cf7a04e8 | 1289 | else |
9b409511 YQ |
1290 | { |
1291 | *xfered_len = (ULONGEST) l; | |
1292 | return TARGET_XFER_OK; | |
1293 | } | |
cf7a04e8 DJ |
1294 | } |
1295 | ||
1296 | /* If none of those methods found the memory we wanted, fall back | |
1297 | to a target partial transfer. Normally a single call to | |
1298 | to_xfer_partial is enough; if it doesn't recognize an object | |
1299 | it will call the to_xfer_partial of the next target down. | |
1300 | But for memory this won't do. Memory is the only target | |
9b409511 YQ |
1301 | object which can be read from more than one valid target. |
1302 | A core file, for instance, could have some of memory but | |
1303 | delegate other bits to the target below it. So, we must | |
1304 | manually try all targets. */ | |
1305 | ||
1306 | res = raw_memory_xfer_partial (ops, readbuf, writebuf, memaddr, reg_len, | |
1307 | xfered_len); | |
cf7a04e8 | 1308 | |
41dcd03f DE |
1309 | /* Make sure the cache gets updated no matter what - if we are writing |
1310 | to the stack. Even if this write is not tagged as such, we still need | |
1311 | to update the cache. */ | |
1312 | ||
9b409511 | 1313 | if (res == TARGET_XFER_OK |
41dcd03f DE |
1314 | && inf != NULL |
1315 | && writebuf != NULL | |
f2de9785 | 1316 | && target_dcache_init_p () |
41dcd03f | 1317 | && !region->attrib.cache |
29453a14 YQ |
1318 | && ((stack_cache_enabled_p () && object != TARGET_OBJECT_STACK_MEMORY) |
1319 | || (code_cache_enabled_p () && object != TARGET_OBJECT_CODE_MEMORY))) | |
41dcd03f | 1320 | { |
f2de9785 | 1321 | DCACHE *dcache = target_dcache_get (); |
2a2f9fe4 | 1322 | |
9b409511 | 1323 | dcache_update (dcache, memaddr, (void *) writebuf, reg_len); |
41dcd03f DE |
1324 | } |
1325 | ||
cf7a04e8 DJ |
1326 | /* If we still haven't got anything, return the last error. We |
1327 | give up. */ | |
1328 | return res; | |
0779438d AC |
1329 | } |
1330 | ||
f0ba3972 PA |
1331 | /* Perform a partial memory transfer. For docs see target.h, |
1332 | to_xfer_partial. */ | |
1333 | ||
9b409511 | 1334 | static enum target_xfer_status |
f0ba3972 | 1335 | memory_xfer_partial (struct target_ops *ops, enum target_object object, |
9b409511 YQ |
1336 | gdb_byte *readbuf, const gdb_byte *writebuf, |
1337 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) | |
f0ba3972 | 1338 | { |
9b409511 | 1339 | enum target_xfer_status res; |
f0ba3972 PA |
1340 | |
1341 | /* Zero length requests are ok and require no work. */ | |
1342 | if (len == 0) | |
9b409511 | 1343 | return TARGET_XFER_EOF; |
f0ba3972 PA |
1344 | |
1345 | /* Fill in READBUF with breakpoint shadows, or WRITEBUF with | |
1346 | breakpoint insns, thus hiding out from higher layers whether | |
1347 | there are software breakpoints inserted in the code stream. */ | |
1348 | if (readbuf != NULL) | |
1349 | { | |
9b409511 YQ |
1350 | res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len, |
1351 | xfered_len); | |
f0ba3972 | 1352 | |
9b409511 | 1353 | if (res == TARGET_XFER_OK && !show_memory_breakpoints) |
f0ba3972 PA |
1354 | breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, res); |
1355 | } | |
1356 | else | |
1357 | { | |
1358 | void *buf; | |
1359 | struct cleanup *old_chain; | |
1360 | ||
67c059c2 AB |
1361 | /* A large write request is likely to be partially satisfied |
1362 | by memory_xfer_partial_1. We will continually malloc | |
1363 | and free a copy of the entire write request for breakpoint | |
1364 | shadow handling even though we only end up writing a small | |
1365 | subset of it. Cap writes to 4KB to mitigate this. */ | |
1366 | len = min (4096, len); | |
1367 | ||
f0ba3972 PA |
1368 | buf = xmalloc (len); |
1369 | old_chain = make_cleanup (xfree, buf); | |
1370 | memcpy (buf, writebuf, len); | |
1371 | ||
1372 | breakpoint_xfer_memory (NULL, buf, writebuf, memaddr, len); | |
9b409511 YQ |
1373 | res = memory_xfer_partial_1 (ops, object, NULL, buf, memaddr, len, |
1374 | xfered_len); | |
f0ba3972 PA |
1375 | |
1376 | do_cleanups (old_chain); | |
1377 | } | |
1378 | ||
1379 | return res; | |
1380 | } | |
1381 | ||
8defab1a DJ |
1382 | static void |
1383 | restore_show_memory_breakpoints (void *arg) | |
1384 | { | |
1385 | show_memory_breakpoints = (uintptr_t) arg; | |
1386 | } | |
1387 | ||
1388 | struct cleanup * | |
1389 | make_show_memory_breakpoints_cleanup (int show) | |
1390 | { | |
1391 | int current = show_memory_breakpoints; | |
8defab1a | 1392 | |
5d502164 | 1393 | show_memory_breakpoints = show; |
8defab1a DJ |
1394 | return make_cleanup (restore_show_memory_breakpoints, |
1395 | (void *) (uintptr_t) current); | |
1396 | } | |
1397 | ||
7f79c47e DE |
1398 | /* For docs see target.h, to_xfer_partial. */ |
1399 | ||
9b409511 | 1400 | enum target_xfer_status |
27394598 AC |
1401 | target_xfer_partial (struct target_ops *ops, |
1402 | enum target_object object, const char *annex, | |
4ac248ca | 1403 | gdb_byte *readbuf, const gdb_byte *writebuf, |
9b409511 YQ |
1404 | ULONGEST offset, ULONGEST len, |
1405 | ULONGEST *xfered_len) | |
27394598 | 1406 | { |
9b409511 | 1407 | enum target_xfer_status retval; |
27394598 AC |
1408 | |
1409 | gdb_assert (ops->to_xfer_partial != NULL); | |
cf7a04e8 | 1410 | |
ce6d0892 YQ |
1411 | /* Transfer is done when LEN is zero. */ |
1412 | if (len == 0) | |
9b409511 | 1413 | return TARGET_XFER_EOF; |
ce6d0892 | 1414 | |
d914c394 SS |
1415 | if (writebuf && !may_write_memory) |
1416 | error (_("Writing to memory is not allowed (addr %s, len %s)"), | |
1417 | core_addr_to_string_nz (offset), plongest (len)); | |
1418 | ||
9b409511 YQ |
1419 | *xfered_len = 0; |
1420 | ||
cf7a04e8 DJ |
1421 | /* If this is a memory transfer, let the memory-specific code |
1422 | have a look at it instead. Memory transfers are more | |
1423 | complicated. */ | |
29453a14 YQ |
1424 | if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY |
1425 | || object == TARGET_OBJECT_CODE_MEMORY) | |
4e5d721f | 1426 | retval = memory_xfer_partial (ops, object, readbuf, |
9b409511 | 1427 | writebuf, offset, len, xfered_len); |
9f713294 | 1428 | else if (object == TARGET_OBJECT_RAW_MEMORY) |
cf7a04e8 | 1429 | { |
9f713294 | 1430 | /* Request the normal memory object from other layers. */ |
9b409511 YQ |
1431 | retval = raw_memory_xfer_partial (ops, readbuf, writebuf, offset, len, |
1432 | xfered_len); | |
cf7a04e8 | 1433 | } |
9f713294 YQ |
1434 | else |
1435 | retval = ops->to_xfer_partial (ops, object, annex, readbuf, | |
9b409511 | 1436 | writebuf, offset, len, xfered_len); |
cf7a04e8 | 1437 | |
27394598 AC |
1438 | if (targetdebug) |
1439 | { | |
1440 | const unsigned char *myaddr = NULL; | |
1441 | ||
1442 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a | 1443 | "%s:target_xfer_partial " |
9b409511 | 1444 | "(%d, %s, %s, %s, %s, %s) = %d, %s", |
27394598 AC |
1445 | ops->to_shortname, |
1446 | (int) object, | |
1447 | (annex ? annex : "(null)"), | |
53b71562 JB |
1448 | host_address_to_string (readbuf), |
1449 | host_address_to_string (writebuf), | |
0b1553bc | 1450 | core_addr_to_string_nz (offset), |
9b409511 YQ |
1451 | pulongest (len), retval, |
1452 | pulongest (*xfered_len)); | |
27394598 AC |
1453 | |
1454 | if (readbuf) | |
1455 | myaddr = readbuf; | |
1456 | if (writebuf) | |
1457 | myaddr = writebuf; | |
9b409511 | 1458 | if (retval == TARGET_XFER_OK && myaddr != NULL) |
27394598 AC |
1459 | { |
1460 | int i; | |
2bc416ba | 1461 | |
27394598 | 1462 | fputs_unfiltered (", bytes =", gdb_stdlog); |
9b409511 | 1463 | for (i = 0; i < *xfered_len; i++) |
27394598 | 1464 | { |
53b71562 | 1465 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1466 | { |
1467 | if (targetdebug < 2 && i > 0) | |
1468 | { | |
1469 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
1470 | break; | |
1471 | } | |
1472 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1473 | } | |
2bc416ba | 1474 | |
27394598 AC |
1475 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
1476 | } | |
1477 | } | |
2bc416ba | 1478 | |
27394598 AC |
1479 | fputc_unfiltered ('\n', gdb_stdlog); |
1480 | } | |
9b409511 YQ |
1481 | |
1482 | /* Check implementations of to_xfer_partial update *XFERED_LEN | |
1483 | properly. Do assertion after printing debug messages, so that we | |
1484 | can find more clues on assertion failure from debugging messages. */ | |
1485 | if (retval == TARGET_XFER_OK || retval == TARGET_XFER_E_UNAVAILABLE) | |
1486 | gdb_assert (*xfered_len > 0); | |
1487 | ||
27394598 AC |
1488 | return retval; |
1489 | } | |
1490 | ||
578d3588 PA |
1491 | /* Read LEN bytes of target memory at address MEMADDR, placing the |
1492 | results in GDB's memory at MYADDR. Returns either 0 for success or | |
9b409511 | 1493 | TARGET_XFER_E_IO if any error occurs. |
c906108c SS |
1494 | |
1495 | If an error occurs, no guarantee is made about the contents of the data at | |
1496 | MYADDR. In particular, the caller should not depend upon partial reads | |
1497 | filling the buffer with good data. There is no way for the caller to know | |
1498 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 | 1499 | deal with partial reads should call target_read (which will retry until |
c378eb4e | 1500 | it makes no progress, and then return how much was transferred). */ |
c906108c SS |
1501 | |
1502 | int | |
1b162304 | 1503 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
c906108c | 1504 | { |
c35b1492 PA |
1505 | /* Dispatch to the topmost target, not the flattened current_target. |
1506 | Memory accesses check target->to_has_(all_)memory, and the | |
1507 | flattened target doesn't inherit those. */ | |
1508 | if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1509 | myaddr, memaddr, len) == len) |
1510 | return 0; | |
0779438d | 1511 | else |
578d3588 | 1512 | return TARGET_XFER_E_IO; |
c906108c SS |
1513 | } |
1514 | ||
aee4bf85 PA |
1515 | /* Like target_read_memory, but specify explicitly that this is a read |
1516 | from the target's raw memory. That is, this read bypasses the | |
1517 | dcache, breakpoint shadowing, etc. */ | |
1518 | ||
1519 | int | |
1520 | target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1521 | { | |
1522 | /* See comment in target_read_memory about why the request starts at | |
1523 | current_target.beneath. */ | |
1524 | if (target_read (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, | |
1525 | myaddr, memaddr, len) == len) | |
1526 | return 0; | |
1527 | else | |
1528 | return TARGET_XFER_E_IO; | |
1529 | } | |
1530 | ||
4e5d721f DE |
1531 | /* Like target_read_memory, but specify explicitly that this is a read from |
1532 | the target's stack. This may trigger different cache behavior. */ | |
1533 | ||
1534 | int | |
45aa4659 | 1535 | target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
4e5d721f | 1536 | { |
aee4bf85 PA |
1537 | /* See comment in target_read_memory about why the request starts at |
1538 | current_target.beneath. */ | |
4e5d721f DE |
1539 | if (target_read (current_target.beneath, TARGET_OBJECT_STACK_MEMORY, NULL, |
1540 | myaddr, memaddr, len) == len) | |
1541 | return 0; | |
1542 | else | |
578d3588 | 1543 | return TARGET_XFER_E_IO; |
4e5d721f DE |
1544 | } |
1545 | ||
29453a14 YQ |
1546 | /* Like target_read_memory, but specify explicitly that this is a read from |
1547 | the target's code. This may trigger different cache behavior. */ | |
1548 | ||
1549 | int | |
1550 | target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1551 | { | |
aee4bf85 PA |
1552 | /* See comment in target_read_memory about why the request starts at |
1553 | current_target.beneath. */ | |
29453a14 YQ |
1554 | if (target_read (current_target.beneath, TARGET_OBJECT_CODE_MEMORY, NULL, |
1555 | myaddr, memaddr, len) == len) | |
1556 | return 0; | |
1557 | else | |
1558 | return TARGET_XFER_E_IO; | |
1559 | } | |
1560 | ||
7f79c47e | 1561 | /* Write LEN bytes from MYADDR to target memory at address MEMADDR. |
9b409511 | 1562 | Returns either 0 for success or TARGET_XFER_E_IO if any |
578d3588 PA |
1563 | error occurs. If an error occurs, no guarantee is made about how |
1564 | much data got written. Callers that can deal with partial writes | |
1565 | should call target_write. */ | |
7f79c47e | 1566 | |
c906108c | 1567 | int |
45aa4659 | 1568 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
c906108c | 1569 | { |
aee4bf85 PA |
1570 | /* See comment in target_read_memory about why the request starts at |
1571 | current_target.beneath. */ | |
c35b1492 | 1572 | if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, |
cf7a04e8 DJ |
1573 | myaddr, memaddr, len) == len) |
1574 | return 0; | |
0779438d | 1575 | else |
578d3588 | 1576 | return TARGET_XFER_E_IO; |
c906108c | 1577 | } |
c5aa993b | 1578 | |
f0ba3972 | 1579 | /* Write LEN bytes from MYADDR to target raw memory at address |
9b409511 | 1580 | MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO |
578d3588 PA |
1581 | if any error occurs. If an error occurs, no guarantee is made |
1582 | about how much data got written. Callers that can deal with | |
1583 | partial writes should call target_write. */ | |
f0ba3972 PA |
1584 | |
1585 | int | |
45aa4659 | 1586 | target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
f0ba3972 | 1587 | { |
aee4bf85 PA |
1588 | /* See comment in target_read_memory about why the request starts at |
1589 | current_target.beneath. */ | |
f0ba3972 PA |
1590 | if (target_write (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, |
1591 | myaddr, memaddr, len) == len) | |
1592 | return 0; | |
1593 | else | |
578d3588 | 1594 | return TARGET_XFER_E_IO; |
f0ba3972 PA |
1595 | } |
1596 | ||
fd79ecee DJ |
1597 | /* Fetch the target's memory map. */ |
1598 | ||
1599 | VEC(mem_region_s) * | |
1600 | target_memory_map (void) | |
1601 | { | |
1602 | VEC(mem_region_s) *result; | |
1603 | struct mem_region *last_one, *this_one; | |
1604 | int ix; | |
1605 | struct target_ops *t; | |
1606 | ||
1607 | if (targetdebug) | |
1608 | fprintf_unfiltered (gdb_stdlog, "target_memory_map ()\n"); | |
1609 | ||
6b2c5a57 | 1610 | result = current_target.to_memory_map (¤t_target); |
fd79ecee DJ |
1611 | if (result == NULL) |
1612 | return NULL; | |
1613 | ||
1614 | qsort (VEC_address (mem_region_s, result), | |
1615 | VEC_length (mem_region_s, result), | |
1616 | sizeof (struct mem_region), mem_region_cmp); | |
1617 | ||
1618 | /* Check that regions do not overlap. Simultaneously assign | |
1619 | a numbering for the "mem" commands to use to refer to | |
1620 | each region. */ | |
1621 | last_one = NULL; | |
1622 | for (ix = 0; VEC_iterate (mem_region_s, result, ix, this_one); ix++) | |
1623 | { | |
1624 | this_one->number = ix; | |
1625 | ||
1626 | if (last_one && last_one->hi > this_one->lo) | |
1627 | { | |
1628 | warning (_("Overlapping regions in memory map: ignoring")); | |
1629 | VEC_free (mem_region_s, result); | |
1630 | return NULL; | |
1631 | } | |
1632 | last_one = this_one; | |
1633 | } | |
1634 | ||
1635 | return result; | |
1636 | } | |
1637 | ||
a76d924d DJ |
1638 | void |
1639 | target_flash_erase (ULONGEST address, LONGEST length) | |
1640 | { | |
e8a6c6ac TT |
1641 | if (targetdebug) |
1642 | fprintf_unfiltered (gdb_stdlog, "target_flash_erase (%s, %s)\n", | |
1643 | hex_string (address), phex (length, 0)); | |
1644 | current_target.to_flash_erase (¤t_target, address, length); | |
a76d924d DJ |
1645 | } |
1646 | ||
1647 | void | |
1648 | target_flash_done (void) | |
1649 | { | |
f6fb2925 TT |
1650 | if (targetdebug) |
1651 | fprintf_unfiltered (gdb_stdlog, "target_flash_done\n"); | |
1652 | current_target.to_flash_done (¤t_target); | |
a76d924d DJ |
1653 | } |
1654 | ||
920d2a44 AC |
1655 | static void |
1656 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1657 | struct cmd_list_element *c, const char *value) | |
1658 | { | |
3e43a32a MS |
1659 | fprintf_filtered (file, |
1660 | _("Mode for reading from readonly sections is %s.\n"), | |
920d2a44 AC |
1661 | value); |
1662 | } | |
3a11626d | 1663 | |
1e3ff5ad AC |
1664 | /* More generic transfers. */ |
1665 | ||
9b409511 | 1666 | static enum target_xfer_status |
8aa91c1e | 1667 | default_xfer_partial (struct target_ops *ops, enum target_object object, |
2bc416ba | 1668 | const char *annex, gdb_byte *readbuf, |
9b409511 YQ |
1669 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, |
1670 | ULONGEST *xfered_len) | |
0088c768 AC |
1671 | { |
1672 | if (object == TARGET_OBJECT_MEMORY | |
c8e73a31 AC |
1673 | && ops->deprecated_xfer_memory != NULL) |
1674 | /* If available, fall back to the target's | |
1675 | "deprecated_xfer_memory" method. */ | |
0088c768 | 1676 | { |
4b8a223f | 1677 | int xfered = -1; |
5d502164 | 1678 | |
0088c768 | 1679 | errno = 0; |
4b8a223f AC |
1680 | if (writebuf != NULL) |
1681 | { | |
1682 | void *buffer = xmalloc (len); | |
1683 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |
5d502164 | 1684 | |
4b8a223f | 1685 | memcpy (buffer, writebuf, len); |
c8e73a31 AC |
1686 | xfered = ops->deprecated_xfer_memory (offset, buffer, len, |
1687 | 1/*write*/, NULL, ops); | |
4b8a223f AC |
1688 | do_cleanups (cleanup); |
1689 | } | |
1690 | if (readbuf != NULL) | |
244e85c8 MS |
1691 | xfered = ops->deprecated_xfer_memory (offset, readbuf, len, |
1692 | 0/*read*/, NULL, ops); | |
0088c768 | 1693 | if (xfered > 0) |
9b409511 YQ |
1694 | { |
1695 | *xfered_len = (ULONGEST) xfered; | |
1696 | return TARGET_XFER_E_IO; | |
1697 | } | |
0088c768 | 1698 | else if (xfered == 0 && errno == 0) |
c8e73a31 AC |
1699 | /* "deprecated_xfer_memory" uses 0, cross checked against |
1700 | ERRNO as one indication of an error. */ | |
9b409511 | 1701 | return TARGET_XFER_EOF; |
0088c768 | 1702 | else |
9b409511 | 1703 | return TARGET_XFER_E_IO; |
0088c768 | 1704 | } |
0088c768 | 1705 | else |
6b84065d TT |
1706 | { |
1707 | gdb_assert (ops->beneath != NULL); | |
1708 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, | |
1709 | readbuf, writebuf, offset, len, | |
1710 | xfered_len); | |
1711 | } | |
0088c768 AC |
1712 | } |
1713 | ||
7f79c47e | 1714 | /* Target vector read/write partial wrapper functions. */ |
0088c768 | 1715 | |
9b409511 | 1716 | static enum target_xfer_status |
1e3ff5ad AC |
1717 | target_read_partial (struct target_ops *ops, |
1718 | enum target_object object, | |
1b0ba102 | 1719 | const char *annex, gdb_byte *buf, |
9b409511 YQ |
1720 | ULONGEST offset, ULONGEST len, |
1721 | ULONGEST *xfered_len) | |
1e3ff5ad | 1722 | { |
9b409511 YQ |
1723 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len, |
1724 | xfered_len); | |
1e3ff5ad AC |
1725 | } |
1726 | ||
8a55ffb0 | 1727 | static enum target_xfer_status |
1e3ff5ad AC |
1728 | target_write_partial (struct target_ops *ops, |
1729 | enum target_object object, | |
1b0ba102 | 1730 | const char *annex, const gdb_byte *buf, |
9b409511 | 1731 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len) |
1e3ff5ad | 1732 | { |
9b409511 YQ |
1733 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len, |
1734 | xfered_len); | |
1e3ff5ad AC |
1735 | } |
1736 | ||
1737 | /* Wrappers to perform the full transfer. */ | |
7f79c47e DE |
1738 | |
1739 | /* For docs on target_read see target.h. */ | |
1740 | ||
1e3ff5ad AC |
1741 | LONGEST |
1742 | target_read (struct target_ops *ops, | |
1743 | enum target_object object, | |
1b0ba102 | 1744 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1745 | ULONGEST offset, LONGEST len) |
1746 | { | |
1747 | LONGEST xfered = 0; | |
5d502164 | 1748 | |
1e3ff5ad AC |
1749 | while (xfered < len) |
1750 | { | |
9b409511 YQ |
1751 | ULONGEST xfered_len; |
1752 | enum target_xfer_status status; | |
1753 | ||
1754 | status = target_read_partial (ops, object, annex, | |
1755 | (gdb_byte *) buf + xfered, | |
1756 | offset + xfered, len - xfered, | |
1757 | &xfered_len); | |
5d502164 | 1758 | |
1e3ff5ad | 1759 | /* Call an observer, notifying them of the xfer progress? */ |
9b409511 | 1760 | if (status == TARGET_XFER_EOF) |
13547ab6 | 1761 | return xfered; |
9b409511 YQ |
1762 | else if (status == TARGET_XFER_OK) |
1763 | { | |
1764 | xfered += xfered_len; | |
1765 | QUIT; | |
1766 | } | |
1767 | else | |
0088c768 | 1768 | return -1; |
9b409511 | 1769 | |
1e3ff5ad AC |
1770 | } |
1771 | return len; | |
1772 | } | |
1773 | ||
f1a507a1 JB |
1774 | /* Assuming that the entire [begin, end) range of memory cannot be |
1775 | read, try to read whatever subrange is possible to read. | |
1776 | ||
1777 | The function returns, in RESULT, either zero or one memory block. | |
1778 | If there's a readable subrange at the beginning, it is completely | |
1779 | read and returned. Any further readable subrange will not be read. | |
1780 | Otherwise, if there's a readable subrange at the end, it will be | |
1781 | completely read and returned. Any readable subranges before it | |
1782 | (obviously, not starting at the beginning), will be ignored. In | |
1783 | other cases -- either no readable subrange, or readable subrange(s) | |
1784 | that is neither at the beginning, or end, nothing is returned. | |
1785 | ||
1786 | The purpose of this function is to handle a read across a boundary | |
1787 | of accessible memory in a case when memory map is not available. | |
1788 | The above restrictions are fine for this case, but will give | |
1789 | incorrect results if the memory is 'patchy'. However, supporting | |
1790 | 'patchy' memory would require trying to read every single byte, | |
1791 | and it seems unacceptable solution. Explicit memory map is | |
1792 | recommended for this case -- and target_read_memory_robust will | |
1793 | take care of reading multiple ranges then. */ | |
8dedea02 VP |
1794 | |
1795 | static void | |
3e43a32a MS |
1796 | read_whatever_is_readable (struct target_ops *ops, |
1797 | ULONGEST begin, ULONGEST end, | |
8dedea02 | 1798 | VEC(memory_read_result_s) **result) |
d5086790 | 1799 | { |
f1a507a1 | 1800 | gdb_byte *buf = xmalloc (end - begin); |
8dedea02 VP |
1801 | ULONGEST current_begin = begin; |
1802 | ULONGEST current_end = end; | |
1803 | int forward; | |
1804 | memory_read_result_s r; | |
9b409511 | 1805 | ULONGEST xfered_len; |
8dedea02 VP |
1806 | |
1807 | /* If we previously failed to read 1 byte, nothing can be done here. */ | |
1808 | if (end - begin <= 1) | |
13b3fd9b MS |
1809 | { |
1810 | xfree (buf); | |
1811 | return; | |
1812 | } | |
8dedea02 VP |
1813 | |
1814 | /* Check that either first or the last byte is readable, and give up | |
c378eb4e | 1815 | if not. This heuristic is meant to permit reading accessible memory |
8dedea02 VP |
1816 | at the boundary of accessible region. */ |
1817 | if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 | 1818 | buf, begin, 1, &xfered_len) == TARGET_XFER_OK) |
8dedea02 VP |
1819 | { |
1820 | forward = 1; | |
1821 | ++current_begin; | |
1822 | } | |
1823 | else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 YQ |
1824 | buf + (end-begin) - 1, end - 1, 1, |
1825 | &xfered_len) == TARGET_XFER_OK) | |
8dedea02 VP |
1826 | { |
1827 | forward = 0; | |
1828 | --current_end; | |
1829 | } | |
1830 | else | |
1831 | { | |
13b3fd9b | 1832 | xfree (buf); |
8dedea02 VP |
1833 | return; |
1834 | } | |
1835 | ||
1836 | /* Loop invariant is that the [current_begin, current_end) was previously | |
1837 | found to be not readable as a whole. | |
1838 | ||
1839 | Note loop condition -- if the range has 1 byte, we can't divide the range | |
1840 | so there's no point trying further. */ | |
1841 | while (current_end - current_begin > 1) | |
1842 | { | |
1843 | ULONGEST first_half_begin, first_half_end; | |
1844 | ULONGEST second_half_begin, second_half_end; | |
1845 | LONGEST xfer; | |
8dedea02 | 1846 | ULONGEST middle = current_begin + (current_end - current_begin)/2; |
f1a507a1 | 1847 | |
8dedea02 VP |
1848 | if (forward) |
1849 | { | |
1850 | first_half_begin = current_begin; | |
1851 | first_half_end = middle; | |
1852 | second_half_begin = middle; | |
1853 | second_half_end = current_end; | |
1854 | } | |
1855 | else | |
1856 | { | |
1857 | first_half_begin = middle; | |
1858 | first_half_end = current_end; | |
1859 | second_half_begin = current_begin; | |
1860 | second_half_end = middle; | |
1861 | } | |
1862 | ||
1863 | xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
1864 | buf + (first_half_begin - begin), | |
1865 | first_half_begin, | |
1866 | first_half_end - first_half_begin); | |
1867 | ||
1868 | if (xfer == first_half_end - first_half_begin) | |
1869 | { | |
c378eb4e | 1870 | /* This half reads up fine. So, the error must be in the |
3e43a32a | 1871 | other half. */ |
8dedea02 VP |
1872 | current_begin = second_half_begin; |
1873 | current_end = second_half_end; | |
1874 | } | |
1875 | else | |
1876 | { | |
c378eb4e MS |
1877 | /* This half is not readable. Because we've tried one byte, we |
1878 | know some part of this half if actually redable. Go to the next | |
8dedea02 VP |
1879 | iteration to divide again and try to read. |
1880 | ||
1881 | We don't handle the other half, because this function only tries | |
1882 | to read a single readable subrange. */ | |
1883 | current_begin = first_half_begin; | |
1884 | current_end = first_half_end; | |
1885 | } | |
1886 | } | |
1887 | ||
1888 | if (forward) | |
1889 | { | |
1890 | /* The [begin, current_begin) range has been read. */ | |
1891 | r.begin = begin; | |
1892 | r.end = current_begin; | |
1893 | r.data = buf; | |
1894 | } | |
1895 | else | |
1896 | { | |
1897 | /* The [current_end, end) range has been read. */ | |
1898 | LONGEST rlen = end - current_end; | |
f1a507a1 | 1899 | |
8dedea02 VP |
1900 | r.data = xmalloc (rlen); |
1901 | memcpy (r.data, buf + current_end - begin, rlen); | |
1902 | r.begin = current_end; | |
1903 | r.end = end; | |
1904 | xfree (buf); | |
1905 | } | |
1906 | VEC_safe_push(memory_read_result_s, (*result), &r); | |
1907 | } | |
1908 | ||
1909 | void | |
1910 | free_memory_read_result_vector (void *x) | |
1911 | { | |
1912 | VEC(memory_read_result_s) *v = x; | |
1913 | memory_read_result_s *current; | |
1914 | int ix; | |
1915 | ||
1916 | for (ix = 0; VEC_iterate (memory_read_result_s, v, ix, current); ++ix) | |
1917 | { | |
1918 | xfree (current->data); | |
1919 | } | |
1920 | VEC_free (memory_read_result_s, v); | |
1921 | } | |
1922 | ||
1923 | VEC(memory_read_result_s) * | |
1924 | read_memory_robust (struct target_ops *ops, ULONGEST offset, LONGEST len) | |
1925 | { | |
1926 | VEC(memory_read_result_s) *result = 0; | |
1927 | ||
1928 | LONGEST xfered = 0; | |
d5086790 VP |
1929 | while (xfered < len) |
1930 | { | |
8dedea02 VP |
1931 | struct mem_region *region = lookup_mem_region (offset + xfered); |
1932 | LONGEST rlen; | |
5d502164 | 1933 | |
8dedea02 VP |
1934 | /* If there is no explicit region, a fake one should be created. */ |
1935 | gdb_assert (region); | |
1936 | ||
1937 | if (region->hi == 0) | |
1938 | rlen = len - xfered; | |
1939 | else | |
1940 | rlen = region->hi - offset; | |
1941 | ||
1942 | if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO) | |
d5086790 | 1943 | { |
c378eb4e | 1944 | /* Cannot read this region. Note that we can end up here only |
8dedea02 VP |
1945 | if the region is explicitly marked inaccessible, or |
1946 | 'inaccessible-by-default' is in effect. */ | |
1947 | xfered += rlen; | |
1948 | } | |
1949 | else | |
1950 | { | |
1951 | LONGEST to_read = min (len - xfered, rlen); | |
1952 | gdb_byte *buffer = (gdb_byte *)xmalloc (to_read); | |
1953 | ||
1954 | LONGEST xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
1955 | (gdb_byte *) buffer, | |
1956 | offset + xfered, to_read); | |
1957 | /* Call an observer, notifying them of the xfer progress? */ | |
d5086790 | 1958 | if (xfer <= 0) |
d5086790 | 1959 | { |
c378eb4e | 1960 | /* Got an error reading full chunk. See if maybe we can read |
8dedea02 VP |
1961 | some subrange. */ |
1962 | xfree (buffer); | |
3e43a32a MS |
1963 | read_whatever_is_readable (ops, offset + xfered, |
1964 | offset + xfered + to_read, &result); | |
8dedea02 | 1965 | xfered += to_read; |
d5086790 | 1966 | } |
8dedea02 VP |
1967 | else |
1968 | { | |
1969 | struct memory_read_result r; | |
1970 | r.data = buffer; | |
1971 | r.begin = offset + xfered; | |
1972 | r.end = r.begin + xfer; | |
1973 | VEC_safe_push (memory_read_result_s, result, &r); | |
1974 | xfered += xfer; | |
1975 | } | |
1976 | QUIT; | |
d5086790 | 1977 | } |
d5086790 | 1978 | } |
8dedea02 | 1979 | return result; |
d5086790 VP |
1980 | } |
1981 | ||
8dedea02 | 1982 | |
cf7a04e8 DJ |
1983 | /* An alternative to target_write with progress callbacks. */ |
1984 | ||
1e3ff5ad | 1985 | LONGEST |
cf7a04e8 DJ |
1986 | target_write_with_progress (struct target_ops *ops, |
1987 | enum target_object object, | |
1988 | const char *annex, const gdb_byte *buf, | |
1989 | ULONGEST offset, LONGEST len, | |
1990 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad AC |
1991 | { |
1992 | LONGEST xfered = 0; | |
a76d924d DJ |
1993 | |
1994 | /* Give the progress callback a chance to set up. */ | |
1995 | if (progress) | |
1996 | (*progress) (0, baton); | |
1997 | ||
1e3ff5ad AC |
1998 | while (xfered < len) |
1999 | { | |
9b409511 YQ |
2000 | ULONGEST xfered_len; |
2001 | enum target_xfer_status status; | |
2002 | ||
2003 | status = target_write_partial (ops, object, annex, | |
2004 | (gdb_byte *) buf + xfered, | |
2005 | offset + xfered, len - xfered, | |
2006 | &xfered_len); | |
cf7a04e8 | 2007 | |
9b409511 | 2008 | if (status == TARGET_XFER_EOF) |
13547ab6 | 2009 | return xfered; |
9b409511 | 2010 | if (TARGET_XFER_STATUS_ERROR_P (status)) |
0088c768 | 2011 | return -1; |
cf7a04e8 | 2012 | |
9b409511 | 2013 | gdb_assert (status == TARGET_XFER_OK); |
cf7a04e8 | 2014 | if (progress) |
9b409511 | 2015 | (*progress) (xfered_len, baton); |
cf7a04e8 | 2016 | |
9b409511 | 2017 | xfered += xfered_len; |
1e3ff5ad AC |
2018 | QUIT; |
2019 | } | |
2020 | return len; | |
2021 | } | |
2022 | ||
7f79c47e DE |
2023 | /* For docs on target_write see target.h. */ |
2024 | ||
cf7a04e8 DJ |
2025 | LONGEST |
2026 | target_write (struct target_ops *ops, | |
2027 | enum target_object object, | |
2028 | const char *annex, const gdb_byte *buf, | |
2029 | ULONGEST offset, LONGEST len) | |
2030 | { | |
2031 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
2032 | NULL, NULL); | |
2033 | } | |
2034 | ||
159f81f3 DJ |
2035 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
2036 | the size of the transferred data. PADDING additional bytes are | |
2037 | available in *BUF_P. This is a helper function for | |
2038 | target_read_alloc; see the declaration of that function for more | |
2039 | information. */ | |
13547ab6 | 2040 | |
159f81f3 DJ |
2041 | static LONGEST |
2042 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, | |
2043 | const char *annex, gdb_byte **buf_p, int padding) | |
13547ab6 DJ |
2044 | { |
2045 | size_t buf_alloc, buf_pos; | |
2046 | gdb_byte *buf; | |
13547ab6 DJ |
2047 | |
2048 | /* This function does not have a length parameter; it reads the | |
2049 | entire OBJECT). Also, it doesn't support objects fetched partly | |
2050 | from one target and partly from another (in a different stratum, | |
2051 | e.g. a core file and an executable). Both reasons make it | |
2052 | unsuitable for reading memory. */ | |
2053 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
2054 | ||
2055 | /* Start by reading up to 4K at a time. The target will throttle | |
2056 | this number down if necessary. */ | |
2057 | buf_alloc = 4096; | |
2058 | buf = xmalloc (buf_alloc); | |
2059 | buf_pos = 0; | |
2060 | while (1) | |
2061 | { | |
9b409511 YQ |
2062 | ULONGEST xfered_len; |
2063 | enum target_xfer_status status; | |
2064 | ||
2065 | status = target_read_partial (ops, object, annex, &buf[buf_pos], | |
2066 | buf_pos, buf_alloc - buf_pos - padding, | |
2067 | &xfered_len); | |
2068 | ||
2069 | if (status == TARGET_XFER_EOF) | |
13547ab6 DJ |
2070 | { |
2071 | /* Read all there was. */ | |
2072 | if (buf_pos == 0) | |
2073 | xfree (buf); | |
2074 | else | |
2075 | *buf_p = buf; | |
2076 | return buf_pos; | |
2077 | } | |
9b409511 YQ |
2078 | else if (status != TARGET_XFER_OK) |
2079 | { | |
2080 | /* An error occurred. */ | |
2081 | xfree (buf); | |
2082 | return TARGET_XFER_E_IO; | |
2083 | } | |
13547ab6 | 2084 | |
9b409511 | 2085 | buf_pos += xfered_len; |
13547ab6 DJ |
2086 | |
2087 | /* If the buffer is filling up, expand it. */ | |
2088 | if (buf_alloc < buf_pos * 2) | |
2089 | { | |
2090 | buf_alloc *= 2; | |
2091 | buf = xrealloc (buf, buf_alloc); | |
2092 | } | |
2093 | ||
2094 | QUIT; | |
2095 | } | |
2096 | } | |
2097 | ||
159f81f3 DJ |
2098 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
2099 | the size of the transferred data. See the declaration in "target.h" | |
2100 | function for more information about the return value. */ | |
2101 | ||
2102 | LONGEST | |
2103 | target_read_alloc (struct target_ops *ops, enum target_object object, | |
2104 | const char *annex, gdb_byte **buf_p) | |
2105 | { | |
2106 | return target_read_alloc_1 (ops, object, annex, buf_p, 0); | |
2107 | } | |
2108 | ||
2109 | /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and | |
2110 | returned as a string, allocated using xmalloc. If an error occurs | |
2111 | or the transfer is unsupported, NULL is returned. Empty objects | |
2112 | are returned as allocated but empty strings. A warning is issued | |
2113 | if the result contains any embedded NUL bytes. */ | |
2114 | ||
2115 | char * | |
2116 | target_read_stralloc (struct target_ops *ops, enum target_object object, | |
2117 | const char *annex) | |
2118 | { | |
39086a0e PA |
2119 | gdb_byte *buffer; |
2120 | char *bufstr; | |
7313baad | 2121 | LONGEST i, transferred; |
159f81f3 | 2122 | |
39086a0e PA |
2123 | transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1); |
2124 | bufstr = (char *) buffer; | |
159f81f3 DJ |
2125 | |
2126 | if (transferred < 0) | |
2127 | return NULL; | |
2128 | ||
2129 | if (transferred == 0) | |
2130 | return xstrdup (""); | |
2131 | ||
39086a0e | 2132 | bufstr[transferred] = 0; |
7313baad UW |
2133 | |
2134 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
39086a0e PA |
2135 | for (i = strlen (bufstr); i < transferred; i++) |
2136 | if (bufstr[i] != 0) | |
7313baad UW |
2137 | { |
2138 | warning (_("target object %d, annex %s, " | |
2139 | "contained unexpected null characters"), | |
2140 | (int) object, annex ? annex : "(none)"); | |
2141 | break; | |
2142 | } | |
159f81f3 | 2143 | |
39086a0e | 2144 | return bufstr; |
159f81f3 DJ |
2145 | } |
2146 | ||
b6591e8b AC |
2147 | /* Memory transfer methods. */ |
2148 | ||
2149 | void | |
1b0ba102 | 2150 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
2151 | LONGEST len) |
2152 | { | |
07b82ea5 PA |
2153 | /* This method is used to read from an alternate, non-current |
2154 | target. This read must bypass the overlay support (as symbols | |
2155 | don't match this target), and GDB's internal cache (wrong cache | |
2156 | for this target). */ | |
2157 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) | |
b6591e8b | 2158 | != len) |
578d3588 | 2159 | memory_error (TARGET_XFER_E_IO, addr); |
b6591e8b AC |
2160 | } |
2161 | ||
2162 | ULONGEST | |
5d502164 MS |
2163 | get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr, |
2164 | int len, enum bfd_endian byte_order) | |
b6591e8b | 2165 | { |
f6519ebc | 2166 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
2167 | |
2168 | gdb_assert (len <= sizeof (buf)); | |
2169 | get_target_memory (ops, addr, buf, len); | |
e17a4113 | 2170 | return extract_unsigned_integer (buf, len, byte_order); |
b6591e8b AC |
2171 | } |
2172 | ||
3db08215 MM |
2173 | /* See target.h. */ |
2174 | ||
d914c394 SS |
2175 | int |
2176 | target_insert_breakpoint (struct gdbarch *gdbarch, | |
2177 | struct bp_target_info *bp_tgt) | |
2178 | { | |
2179 | if (!may_insert_breakpoints) | |
2180 | { | |
2181 | warning (_("May not insert breakpoints")); | |
2182 | return 1; | |
2183 | } | |
2184 | ||
6b84065d TT |
2185 | return current_target.to_insert_breakpoint (¤t_target, |
2186 | gdbarch, bp_tgt); | |
d914c394 SS |
2187 | } |
2188 | ||
3db08215 MM |
2189 | /* See target.h. */ |
2190 | ||
d914c394 | 2191 | int |
6b84065d TT |
2192 | target_remove_breakpoint (struct gdbarch *gdbarch, |
2193 | struct bp_target_info *bp_tgt) | |
d914c394 SS |
2194 | { |
2195 | /* This is kind of a weird case to handle, but the permission might | |
2196 | have been changed after breakpoints were inserted - in which case | |
2197 | we should just take the user literally and assume that any | |
2198 | breakpoints should be left in place. */ | |
2199 | if (!may_insert_breakpoints) | |
2200 | { | |
2201 | warning (_("May not remove breakpoints")); | |
2202 | return 1; | |
2203 | } | |
2204 | ||
6b84065d TT |
2205 | return current_target.to_remove_breakpoint (¤t_target, |
2206 | gdbarch, bp_tgt); | |
d914c394 SS |
2207 | } |
2208 | ||
c906108c | 2209 | static void |
fba45db2 | 2210 | target_info (char *args, int from_tty) |
c906108c SS |
2211 | { |
2212 | struct target_ops *t; | |
c906108c | 2213 | int has_all_mem = 0; |
c5aa993b | 2214 | |
c906108c | 2215 | if (symfile_objfile != NULL) |
4262abfb JK |
2216 | printf_unfiltered (_("Symbols from \"%s\".\n"), |
2217 | objfile_name (symfile_objfile)); | |
c906108c | 2218 | |
258b763a | 2219 | for (t = target_stack; t != NULL; t = t->beneath) |
c906108c | 2220 | { |
c35b1492 | 2221 | if (!(*t->to_has_memory) (t)) |
c906108c SS |
2222 | continue; |
2223 | ||
c5aa993b | 2224 | if ((int) (t->to_stratum) <= (int) dummy_stratum) |
c906108c SS |
2225 | continue; |
2226 | if (has_all_mem) | |
3e43a32a MS |
2227 | printf_unfiltered (_("\tWhile running this, " |
2228 | "GDB does not access memory from...\n")); | |
c5aa993b JM |
2229 | printf_unfiltered ("%s:\n", t->to_longname); |
2230 | (t->to_files_info) (t); | |
c35b1492 | 2231 | has_all_mem = (*t->to_has_all_memory) (t); |
c906108c SS |
2232 | } |
2233 | } | |
2234 | ||
fd79ecee DJ |
2235 | /* This function is called before any new inferior is created, e.g. |
2236 | by running a program, attaching, or connecting to a target. | |
2237 | It cleans up any state from previous invocations which might | |
2238 | change between runs. This is a subset of what target_preopen | |
2239 | resets (things which might change between targets). */ | |
2240 | ||
2241 | void | |
2242 | target_pre_inferior (int from_tty) | |
2243 | { | |
c378eb4e | 2244 | /* Clear out solib state. Otherwise the solib state of the previous |
b9db4ced | 2245 | inferior might have survived and is entirely wrong for the new |
c378eb4e | 2246 | target. This has been observed on GNU/Linux using glibc 2.3. How |
b9db4ced UW |
2247 | to reproduce: |
2248 | ||
2249 | bash$ ./foo& | |
2250 | [1] 4711 | |
2251 | bash$ ./foo& | |
2252 | [1] 4712 | |
2253 | bash$ gdb ./foo | |
2254 | [...] | |
2255 | (gdb) attach 4711 | |
2256 | (gdb) detach | |
2257 | (gdb) attach 4712 | |
2258 | Cannot access memory at address 0xdeadbeef | |
2259 | */ | |
b9db4ced | 2260 | |
50c71eaf PA |
2261 | /* In some OSs, the shared library list is the same/global/shared |
2262 | across inferiors. If code is shared between processes, so are | |
2263 | memory regions and features. */ | |
f5656ead | 2264 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
50c71eaf PA |
2265 | { |
2266 | no_shared_libraries (NULL, from_tty); | |
2267 | ||
2268 | invalidate_target_mem_regions (); | |
424163ea | 2269 | |
50c71eaf PA |
2270 | target_clear_description (); |
2271 | } | |
8ffcbaaf YQ |
2272 | |
2273 | agent_capability_invalidate (); | |
fd79ecee DJ |
2274 | } |
2275 | ||
b8fa0bfa PA |
2276 | /* Callback for iterate_over_inferiors. Gets rid of the given |
2277 | inferior. */ | |
2278 | ||
2279 | static int | |
2280 | dispose_inferior (struct inferior *inf, void *args) | |
2281 | { | |
2282 | struct thread_info *thread; | |
2283 | ||
2284 | thread = any_thread_of_process (inf->pid); | |
2285 | if (thread) | |
2286 | { | |
2287 | switch_to_thread (thread->ptid); | |
2288 | ||
2289 | /* Core inferiors actually should be detached, not killed. */ | |
2290 | if (target_has_execution) | |
2291 | target_kill (); | |
2292 | else | |
2293 | target_detach (NULL, 0); | |
2294 | } | |
2295 | ||
2296 | return 0; | |
2297 | } | |
2298 | ||
c906108c SS |
2299 | /* This is to be called by the open routine before it does |
2300 | anything. */ | |
2301 | ||
2302 | void | |
fba45db2 | 2303 | target_preopen (int from_tty) |
c906108c | 2304 | { |
c5aa993b | 2305 | dont_repeat (); |
c906108c | 2306 | |
b8fa0bfa | 2307 | if (have_inferiors ()) |
c5aa993b | 2308 | { |
adf40b2e | 2309 | if (!from_tty |
b8fa0bfa PA |
2310 | || !have_live_inferiors () |
2311 | || query (_("A program is being debugged already. Kill it? "))) | |
2312 | iterate_over_inferiors (dispose_inferior, NULL); | |
c906108c | 2313 | else |
8a3fe4f8 | 2314 | error (_("Program not killed.")); |
c906108c SS |
2315 | } |
2316 | ||
2317 | /* Calling target_kill may remove the target from the stack. But if | |
2318 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
2319 | /* Leave the exec target, though. The user may be switching from a |
2320 | live process to a core of the same program. */ | |
460014f5 | 2321 | pop_all_targets_above (file_stratum); |
fd79ecee DJ |
2322 | |
2323 | target_pre_inferior (from_tty); | |
c906108c SS |
2324 | } |
2325 | ||
2326 | /* Detach a target after doing deferred register stores. */ | |
2327 | ||
2328 | void | |
52554a0e | 2329 | target_detach (const char *args, int from_tty) |
c906108c | 2330 | { |
136d6dae VP |
2331 | struct target_ops* t; |
2332 | ||
f5656ead | 2333 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
2334 | /* Don't remove global breakpoints here. They're removed on |
2335 | disconnection from the target. */ | |
2336 | ; | |
2337 | else | |
2338 | /* If we're in breakpoints-always-inserted mode, have to remove | |
2339 | them before detaching. */ | |
dfd4cc63 | 2340 | remove_breakpoints_pid (ptid_get_pid (inferior_ptid)); |
74960c60 | 2341 | |
24291992 PA |
2342 | prepare_for_detach (); |
2343 | ||
09da0d0a TT |
2344 | current_target.to_detach (¤t_target, args, from_tty); |
2345 | if (targetdebug) | |
2346 | fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n", | |
2347 | args, from_tty); | |
c906108c SS |
2348 | } |
2349 | ||
6ad8ae5c DJ |
2350 | void |
2351 | target_disconnect (char *args, int from_tty) | |
2352 | { | |
50c71eaf PA |
2353 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
2354 | are global across processes, we have to remove them before | |
2355 | disconnecting. */ | |
74960c60 VP |
2356 | remove_breakpoints (); |
2357 | ||
86a0854a TT |
2358 | if (targetdebug) |
2359 | fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n", | |
2360 | args, from_tty); | |
2361 | current_target.to_disconnect (¤t_target, args, from_tty); | |
6ad8ae5c DJ |
2362 | } |
2363 | ||
117de6a9 | 2364 | ptid_t |
47608cb1 | 2365 | target_wait (ptid_t ptid, struct target_waitstatus *status, int options) |
117de6a9 PA |
2366 | { |
2367 | struct target_ops *t; | |
6b84065d TT |
2368 | ptid_t retval = (current_target.to_wait) (¤t_target, ptid, |
2369 | status, options); | |
117de6a9 | 2370 | |
6b84065d | 2371 | if (targetdebug) |
117de6a9 | 2372 | { |
6b84065d TT |
2373 | char *status_string; |
2374 | char *options_string; | |
117de6a9 | 2375 | |
6b84065d TT |
2376 | status_string = target_waitstatus_to_string (status); |
2377 | options_string = target_options_to_string (options); | |
2378 | fprintf_unfiltered (gdb_stdlog, | |
2379 | "target_wait (%d, status, options={%s})" | |
2380 | " = %d, %s\n", | |
2381 | ptid_get_pid (ptid), options_string, | |
2382 | ptid_get_pid (retval), status_string); | |
2383 | xfree (status_string); | |
2384 | xfree (options_string); | |
117de6a9 PA |
2385 | } |
2386 | ||
6b84065d | 2387 | return retval; |
117de6a9 PA |
2388 | } |
2389 | ||
2390 | char * | |
2391 | target_pid_to_str (ptid_t ptid) | |
2392 | { | |
770234d3 | 2393 | return (*current_target.to_pid_to_str) (¤t_target, ptid); |
117de6a9 PA |
2394 | } |
2395 | ||
4694da01 TT |
2396 | char * |
2397 | target_thread_name (struct thread_info *info) | |
2398 | { | |
825828fc | 2399 | return current_target.to_thread_name (¤t_target, info); |
4694da01 TT |
2400 | } |
2401 | ||
e1ac3328 | 2402 | void |
2ea28649 | 2403 | target_resume (ptid_t ptid, int step, enum gdb_signal signal) |
e1ac3328 | 2404 | { |
28439f5e PA |
2405 | struct target_ops *t; |
2406 | ||
4e5d721f | 2407 | target_dcache_invalidate (); |
28439f5e | 2408 | |
6b84065d TT |
2409 | current_target.to_resume (¤t_target, ptid, step, signal); |
2410 | if (targetdebug) | |
2411 | fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n", | |
2412 | ptid_get_pid (ptid), | |
2413 | step ? "step" : "continue", | |
2414 | gdb_signal_to_name (signal)); | |
28439f5e | 2415 | |
6b84065d TT |
2416 | registers_changed_ptid (ptid); |
2417 | set_executing (ptid, 1); | |
2418 | set_running (ptid, 1); | |
2419 | clear_inline_frame_state (ptid); | |
e1ac3328 | 2420 | } |
2455069d UW |
2421 | |
2422 | void | |
2423 | target_pass_signals (int numsigs, unsigned char *pass_signals) | |
2424 | { | |
035cad7f | 2425 | if (targetdebug) |
2455069d | 2426 | { |
035cad7f | 2427 | int i; |
2455069d | 2428 | |
035cad7f TT |
2429 | fprintf_unfiltered (gdb_stdlog, "target_pass_signals (%d, {", |
2430 | numsigs); | |
2455069d | 2431 | |
035cad7f TT |
2432 | for (i = 0; i < numsigs; i++) |
2433 | if (pass_signals[i]) | |
2434 | fprintf_unfiltered (gdb_stdlog, " %s", | |
2435 | gdb_signal_to_name (i)); | |
2455069d | 2436 | |
035cad7f | 2437 | fprintf_unfiltered (gdb_stdlog, " })\n"); |
2455069d | 2438 | } |
035cad7f TT |
2439 | |
2440 | (*current_target.to_pass_signals) (¤t_target, numsigs, pass_signals); | |
2455069d UW |
2441 | } |
2442 | ||
9b224c5e PA |
2443 | void |
2444 | target_program_signals (int numsigs, unsigned char *program_signals) | |
2445 | { | |
7d4f8efa | 2446 | if (targetdebug) |
9b224c5e | 2447 | { |
7d4f8efa | 2448 | int i; |
9b224c5e | 2449 | |
7d4f8efa TT |
2450 | fprintf_unfiltered (gdb_stdlog, "target_program_signals (%d, {", |
2451 | numsigs); | |
9b224c5e | 2452 | |
7d4f8efa TT |
2453 | for (i = 0; i < numsigs; i++) |
2454 | if (program_signals[i]) | |
2455 | fprintf_unfiltered (gdb_stdlog, " %s", | |
2456 | gdb_signal_to_name (i)); | |
9b224c5e | 2457 | |
7d4f8efa | 2458 | fprintf_unfiltered (gdb_stdlog, " })\n"); |
9b224c5e | 2459 | } |
7d4f8efa TT |
2460 | |
2461 | (*current_target.to_program_signals) (¤t_target, | |
2462 | numsigs, program_signals); | |
9b224c5e PA |
2463 | } |
2464 | ||
098dba18 TT |
2465 | static int |
2466 | default_follow_fork (struct target_ops *self, int follow_child, | |
2467 | int detach_fork) | |
2468 | { | |
2469 | /* Some target returned a fork event, but did not know how to follow it. */ | |
2470 | internal_error (__FILE__, __LINE__, | |
2471 | _("could not find a target to follow fork")); | |
2472 | } | |
2473 | ||
ee057212 DJ |
2474 | /* Look through the list of possible targets for a target that can |
2475 | follow forks. */ | |
2476 | ||
2477 | int | |
07107ca6 | 2478 | target_follow_fork (int follow_child, int detach_fork) |
ee057212 | 2479 | { |
098dba18 TT |
2480 | int retval = current_target.to_follow_fork (¤t_target, |
2481 | follow_child, detach_fork); | |
ee057212 | 2482 | |
098dba18 TT |
2483 | if (targetdebug) |
2484 | fprintf_unfiltered (gdb_stdlog, | |
2485 | "target_follow_fork (%d, %d) = %d\n", | |
2486 | follow_child, detach_fork, retval); | |
2487 | return retval; | |
ee057212 DJ |
2488 | } |
2489 | ||
8d657035 TT |
2490 | static void |
2491 | default_mourn_inferior (struct target_ops *self) | |
2492 | { | |
2493 | internal_error (__FILE__, __LINE__, | |
2494 | _("could not find a target to follow mourn inferior")); | |
2495 | } | |
2496 | ||
136d6dae VP |
2497 | void |
2498 | target_mourn_inferior (void) | |
2499 | { | |
8d657035 TT |
2500 | current_target.to_mourn_inferior (¤t_target); |
2501 | if (targetdebug) | |
2502 | fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n"); | |
136d6dae | 2503 | |
8d657035 TT |
2504 | /* We no longer need to keep handles on any of the object files. |
2505 | Make sure to release them to avoid unnecessarily locking any | |
2506 | of them while we're not actually debugging. */ | |
2507 | bfd_cache_close_all (); | |
136d6dae VP |
2508 | } |
2509 | ||
424163ea DJ |
2510 | /* Look for a target which can describe architectural features, starting |
2511 | from TARGET. If we find one, return its description. */ | |
2512 | ||
2513 | const struct target_desc * | |
2514 | target_read_description (struct target_ops *target) | |
2515 | { | |
2117c711 | 2516 | return target->to_read_description (target); |
424163ea DJ |
2517 | } |
2518 | ||
58a5184e | 2519 | /* This implements a basic search of memory, reading target memory and |
08388c79 DE |
2520 | performing the search here (as opposed to performing the search in on the |
2521 | target side with, for example, gdbserver). */ | |
2522 | ||
2523 | int | |
2524 | simple_search_memory (struct target_ops *ops, | |
2525 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2526 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2527 | CORE_ADDR *found_addrp) | |
2528 | { | |
2529 | /* NOTE: also defined in find.c testcase. */ | |
2530 | #define SEARCH_CHUNK_SIZE 16000 | |
2531 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
2532 | /* Buffer to hold memory contents for searching. */ | |
2533 | gdb_byte *search_buf; | |
2534 | unsigned search_buf_size; | |
2535 | struct cleanup *old_cleanups; | |
2536 | ||
2537 | search_buf_size = chunk_size + pattern_len - 1; | |
2538 | ||
2539 | /* No point in trying to allocate a buffer larger than the search space. */ | |
2540 | if (search_space_len < search_buf_size) | |
2541 | search_buf_size = search_space_len; | |
2542 | ||
2543 | search_buf = malloc (search_buf_size); | |
2544 | if (search_buf == NULL) | |
5e1471f5 | 2545 | error (_("Unable to allocate memory to perform the search.")); |
08388c79 DE |
2546 | old_cleanups = make_cleanup (free_current_contents, &search_buf); |
2547 | ||
2548 | /* Prime the search buffer. */ | |
2549 | ||
2550 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2551 | search_buf, start_addr, search_buf_size) != search_buf_size) | |
2552 | { | |
b3dc46ff AB |
2553 | warning (_("Unable to access %s bytes of target " |
2554 | "memory at %s, halting search."), | |
2555 | pulongest (search_buf_size), hex_string (start_addr)); | |
08388c79 DE |
2556 | do_cleanups (old_cleanups); |
2557 | return -1; | |
2558 | } | |
2559 | ||
2560 | /* Perform the search. | |
2561 | ||
2562 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
2563 | When we've scanned N bytes we copy the trailing bytes to the start and | |
2564 | read in another N bytes. */ | |
2565 | ||
2566 | while (search_space_len >= pattern_len) | |
2567 | { | |
2568 | gdb_byte *found_ptr; | |
2569 | unsigned nr_search_bytes = min (search_space_len, search_buf_size); | |
2570 | ||
2571 | found_ptr = memmem (search_buf, nr_search_bytes, | |
2572 | pattern, pattern_len); | |
2573 | ||
2574 | if (found_ptr != NULL) | |
2575 | { | |
2576 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
5d502164 | 2577 | |
08388c79 DE |
2578 | *found_addrp = found_addr; |
2579 | do_cleanups (old_cleanups); | |
2580 | return 1; | |
2581 | } | |
2582 | ||
2583 | /* Not found in this chunk, skip to next chunk. */ | |
2584 | ||
2585 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
2586 | if (search_space_len >= chunk_size) | |
2587 | search_space_len -= chunk_size; | |
2588 | else | |
2589 | search_space_len = 0; | |
2590 | ||
2591 | if (search_space_len >= pattern_len) | |
2592 | { | |
2593 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 2594 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
2595 | int nr_to_read; |
2596 | ||
2597 | /* Copy the trailing part of the previous iteration to the front | |
2598 | of the buffer for the next iteration. */ | |
2599 | gdb_assert (keep_len == pattern_len - 1); | |
2600 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
2601 | ||
2602 | nr_to_read = min (search_space_len - keep_len, chunk_size); | |
2603 | ||
2604 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2605 | search_buf + keep_len, read_addr, | |
2606 | nr_to_read) != nr_to_read) | |
2607 | { | |
b3dc46ff | 2608 | warning (_("Unable to access %s bytes of target " |
9b20d036 | 2609 | "memory at %s, halting search."), |
b3dc46ff | 2610 | plongest (nr_to_read), |
08388c79 DE |
2611 | hex_string (read_addr)); |
2612 | do_cleanups (old_cleanups); | |
2613 | return -1; | |
2614 | } | |
2615 | ||
2616 | start_addr += chunk_size; | |
2617 | } | |
2618 | } | |
2619 | ||
2620 | /* Not found. */ | |
2621 | ||
2622 | do_cleanups (old_cleanups); | |
2623 | return 0; | |
2624 | } | |
2625 | ||
58a5184e TT |
2626 | /* Default implementation of memory-searching. */ |
2627 | ||
2628 | static int | |
2629 | default_search_memory (struct target_ops *self, | |
2630 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2631 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2632 | CORE_ADDR *found_addrp) | |
2633 | { | |
2634 | /* Start over from the top of the target stack. */ | |
2635 | return simple_search_memory (current_target.beneath, | |
2636 | start_addr, search_space_len, | |
2637 | pattern, pattern_len, found_addrp); | |
2638 | } | |
2639 | ||
08388c79 DE |
2640 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the |
2641 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2642 | ||
2643 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2644 | requiring halting of the search (e.g. memory read error). | |
2645 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2646 | ||
2647 | int | |
2648 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2649 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2650 | CORE_ADDR *found_addrp) | |
2651 | { | |
08388c79 DE |
2652 | int found; |
2653 | ||
08388c79 DE |
2654 | if (targetdebug) |
2655 | fprintf_unfiltered (gdb_stdlog, "target_search_memory (%s, ...)\n", | |
2656 | hex_string (start_addr)); | |
2657 | ||
58a5184e TT |
2658 | found = current_target.to_search_memory (¤t_target, start_addr, |
2659 | search_space_len, | |
2660 | pattern, pattern_len, found_addrp); | |
08388c79 DE |
2661 | |
2662 | if (targetdebug) | |
2663 | fprintf_unfiltered (gdb_stdlog, " = %d\n", found); | |
2664 | ||
2665 | return found; | |
2666 | } | |
2667 | ||
8edfe269 DJ |
2668 | /* Look through the currently pushed targets. If none of them will |
2669 | be able to restart the currently running process, issue an error | |
2670 | message. */ | |
2671 | ||
2672 | void | |
2673 | target_require_runnable (void) | |
2674 | { | |
2675 | struct target_ops *t; | |
2676 | ||
2677 | for (t = target_stack; t != NULL; t = t->beneath) | |
2678 | { | |
2679 | /* If this target knows how to create a new program, then | |
2680 | assume we will still be able to after killing the current | |
2681 | one. Either killing and mourning will not pop T, or else | |
2682 | find_default_run_target will find it again. */ | |
2683 | if (t->to_create_inferior != NULL) | |
2684 | return; | |
2685 | ||
2686 | /* Do not worry about thread_stratum targets that can not | |
2687 | create inferiors. Assume they will be pushed again if | |
2688 | necessary, and continue to the process_stratum. */ | |
85e747d2 UW |
2689 | if (t->to_stratum == thread_stratum |
2690 | || t->to_stratum == arch_stratum) | |
8edfe269 DJ |
2691 | continue; |
2692 | ||
3e43a32a MS |
2693 | error (_("The \"%s\" target does not support \"run\". " |
2694 | "Try \"help target\" or \"continue\"."), | |
8edfe269 DJ |
2695 | t->to_shortname); |
2696 | } | |
2697 | ||
2698 | /* This function is only called if the target is running. In that | |
2699 | case there should have been a process_stratum target and it | |
c378eb4e | 2700 | should either know how to create inferiors, or not... */ |
9b20d036 | 2701 | internal_error (__FILE__, __LINE__, _("No targets found")); |
8edfe269 DJ |
2702 | } |
2703 | ||
c906108c SS |
2704 | /* Look through the list of possible targets for a target that can |
2705 | execute a run or attach command without any other data. This is | |
2706 | used to locate the default process stratum. | |
2707 | ||
5f667f2d PA |
2708 | If DO_MESG is not NULL, the result is always valid (error() is |
2709 | called for errors); else, return NULL on error. */ | |
c906108c SS |
2710 | |
2711 | static struct target_ops * | |
fba45db2 | 2712 | find_default_run_target (char *do_mesg) |
c906108c SS |
2713 | { |
2714 | struct target_ops **t; | |
2715 | struct target_ops *runable = NULL; | |
2716 | int count; | |
2717 | ||
2718 | count = 0; | |
2719 | ||
2720 | for (t = target_structs; t < target_structs + target_struct_size; | |
2721 | ++t) | |
2722 | { | |
e88ef65c | 2723 | if ((*t)->to_can_run != delegate_can_run && target_can_run (*t)) |
c906108c SS |
2724 | { |
2725 | runable = *t; | |
2726 | ++count; | |
2727 | } | |
2728 | } | |
2729 | ||
2730 | if (count != 1) | |
5f667f2d PA |
2731 | { |
2732 | if (do_mesg) | |
2733 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
2734 | else | |
2735 | return NULL; | |
2736 | } | |
c906108c SS |
2737 | |
2738 | return runable; | |
2739 | } | |
2740 | ||
2741 | void | |
136d6dae | 2742 | find_default_attach (struct target_ops *ops, char *args, int from_tty) |
c906108c SS |
2743 | { |
2744 | struct target_ops *t; | |
2745 | ||
c5aa993b | 2746 | t = find_default_run_target ("attach"); |
136d6dae | 2747 | (t->to_attach) (t, args, from_tty); |
c906108c SS |
2748 | return; |
2749 | } | |
2750 | ||
c906108c | 2751 | void |
136d6dae VP |
2752 | find_default_create_inferior (struct target_ops *ops, |
2753 | char *exec_file, char *allargs, char **env, | |
c27cda74 | 2754 | int from_tty) |
c906108c SS |
2755 | { |
2756 | struct target_ops *t; | |
2757 | ||
c5aa993b | 2758 | t = find_default_run_target ("run"); |
136d6dae | 2759 | (t->to_create_inferior) (t, exec_file, allargs, env, from_tty); |
c906108c SS |
2760 | return; |
2761 | } | |
2762 | ||
2c0b251b | 2763 | static int |
6a109b6b | 2764 | find_default_can_async_p (struct target_ops *ignore) |
b84876c2 PA |
2765 | { |
2766 | struct target_ops *t; | |
2767 | ||
5f667f2d PA |
2768 | /* This may be called before the target is pushed on the stack; |
2769 | look for the default process stratum. If there's none, gdb isn't | |
2770 | configured with a native debugger, and target remote isn't | |
2771 | connected yet. */ | |
2772 | t = find_default_run_target (NULL); | |
6b84065d | 2773 | if (t && t->to_can_async_p != delegate_can_async_p) |
6a109b6b | 2774 | return (t->to_can_async_p) (t); |
b84876c2 PA |
2775 | return 0; |
2776 | } | |
2777 | ||
2c0b251b | 2778 | static int |
6a109b6b | 2779 | find_default_is_async_p (struct target_ops *ignore) |
b84876c2 PA |
2780 | { |
2781 | struct target_ops *t; | |
2782 | ||
5f667f2d PA |
2783 | /* This may be called before the target is pushed on the stack; |
2784 | look for the default process stratum. If there's none, gdb isn't | |
2785 | configured with a native debugger, and target remote isn't | |
2786 | connected yet. */ | |
2787 | t = find_default_run_target (NULL); | |
6b84065d | 2788 | if (t && t->to_is_async_p != delegate_is_async_p) |
6a109b6b | 2789 | return (t->to_is_async_p) (t); |
b84876c2 PA |
2790 | return 0; |
2791 | } | |
2792 | ||
2c0b251b | 2793 | static int |
2a9a2795 | 2794 | find_default_supports_non_stop (struct target_ops *self) |
9908b566 VP |
2795 | { |
2796 | struct target_ops *t; | |
2797 | ||
2798 | t = find_default_run_target (NULL); | |
2799 | if (t && t->to_supports_non_stop) | |
2a9a2795 | 2800 | return (t->to_supports_non_stop) (t); |
9908b566 VP |
2801 | return 0; |
2802 | } | |
2803 | ||
2804 | int | |
2c0b251b | 2805 | target_supports_non_stop (void) |
9908b566 VP |
2806 | { |
2807 | struct target_ops *t; | |
5d502164 | 2808 | |
9908b566 VP |
2809 | for (t = ¤t_target; t != NULL; t = t->beneath) |
2810 | if (t->to_supports_non_stop) | |
2a9a2795 | 2811 | return t->to_supports_non_stop (t); |
9908b566 VP |
2812 | |
2813 | return 0; | |
2814 | } | |
2815 | ||
145b16a9 UW |
2816 | /* Implement the "info proc" command. */ |
2817 | ||
451b7c33 | 2818 | int |
145b16a9 UW |
2819 | target_info_proc (char *args, enum info_proc_what what) |
2820 | { | |
2821 | struct target_ops *t; | |
2822 | ||
2823 | /* If we're already connected to something that can get us OS | |
2824 | related data, use it. Otherwise, try using the native | |
2825 | target. */ | |
2826 | if (current_target.to_stratum >= process_stratum) | |
2827 | t = current_target.beneath; | |
2828 | else | |
2829 | t = find_default_run_target (NULL); | |
2830 | ||
2831 | for (; t != NULL; t = t->beneath) | |
2832 | { | |
2833 | if (t->to_info_proc != NULL) | |
2834 | { | |
2835 | t->to_info_proc (t, args, what); | |
2836 | ||
2837 | if (targetdebug) | |
2838 | fprintf_unfiltered (gdb_stdlog, | |
2839 | "target_info_proc (\"%s\", %d)\n", args, what); | |
2840 | ||
451b7c33 | 2841 | return 1; |
145b16a9 UW |
2842 | } |
2843 | } | |
2844 | ||
451b7c33 | 2845 | return 0; |
145b16a9 UW |
2846 | } |
2847 | ||
03583c20 | 2848 | static int |
2bfc0540 | 2849 | find_default_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
2850 | { |
2851 | struct target_ops *t; | |
2852 | ||
2853 | t = find_default_run_target (NULL); | |
2854 | if (t && t->to_supports_disable_randomization) | |
2bfc0540 | 2855 | return (t->to_supports_disable_randomization) (t); |
03583c20 UW |
2856 | return 0; |
2857 | } | |
2858 | ||
2859 | int | |
2860 | target_supports_disable_randomization (void) | |
2861 | { | |
2862 | struct target_ops *t; | |
2863 | ||
2864 | for (t = ¤t_target; t != NULL; t = t->beneath) | |
2865 | if (t->to_supports_disable_randomization) | |
2bfc0540 | 2866 | return t->to_supports_disable_randomization (t); |
03583c20 UW |
2867 | |
2868 | return 0; | |
2869 | } | |
9908b566 | 2870 | |
07e059b5 VP |
2871 | char * |
2872 | target_get_osdata (const char *type) | |
2873 | { | |
07e059b5 VP |
2874 | struct target_ops *t; |
2875 | ||
739ef7fb PA |
2876 | /* If we're already connected to something that can get us OS |
2877 | related data, use it. Otherwise, try using the native | |
2878 | target. */ | |
2879 | if (current_target.to_stratum >= process_stratum) | |
6d097e65 | 2880 | t = current_target.beneath; |
739ef7fb PA |
2881 | else |
2882 | t = find_default_run_target ("get OS data"); | |
07e059b5 VP |
2883 | |
2884 | if (!t) | |
2885 | return NULL; | |
2886 | ||
6d097e65 | 2887 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
2888 | } |
2889 | ||
6c95b8df PA |
2890 | /* Determine the current address space of thread PTID. */ |
2891 | ||
2892 | struct address_space * | |
2893 | target_thread_address_space (ptid_t ptid) | |
2894 | { | |
c0694254 | 2895 | struct address_space *aspace; |
6c95b8df | 2896 | struct inferior *inf; |
c0694254 PA |
2897 | struct target_ops *t; |
2898 | ||
2899 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2900 | { | |
2901 | if (t->to_thread_address_space != NULL) | |
2902 | { | |
2903 | aspace = t->to_thread_address_space (t, ptid); | |
2904 | gdb_assert (aspace); | |
6c95b8df | 2905 | |
c0694254 PA |
2906 | if (targetdebug) |
2907 | fprintf_unfiltered (gdb_stdlog, | |
2908 | "target_thread_address_space (%s) = %d\n", | |
2909 | target_pid_to_str (ptid), | |
2910 | address_space_num (aspace)); | |
2911 | return aspace; | |
2912 | } | |
2913 | } | |
6c95b8df PA |
2914 | |
2915 | /* Fall-back to the "main" address space of the inferior. */ | |
2916 | inf = find_inferior_pid (ptid_get_pid (ptid)); | |
2917 | ||
2918 | if (inf == NULL || inf->aspace == NULL) | |
3e43a32a | 2919 | internal_error (__FILE__, __LINE__, |
9b20d036 MS |
2920 | _("Can't determine the current " |
2921 | "address space of thread %s\n"), | |
6c95b8df PA |
2922 | target_pid_to_str (ptid)); |
2923 | ||
2924 | return inf->aspace; | |
2925 | } | |
2926 | ||
7313baad UW |
2927 | |
2928 | /* Target file operations. */ | |
2929 | ||
2930 | static struct target_ops * | |
2931 | default_fileio_target (void) | |
2932 | { | |
2933 | /* If we're already connected to something that can perform | |
2934 | file I/O, use it. Otherwise, try using the native target. */ | |
2935 | if (current_target.to_stratum >= process_stratum) | |
2936 | return current_target.beneath; | |
2937 | else | |
2938 | return find_default_run_target ("file I/O"); | |
2939 | } | |
2940 | ||
2941 | /* Open FILENAME on the target, using FLAGS and MODE. Return a | |
2942 | target file descriptor, or -1 if an error occurs (and set | |
2943 | *TARGET_ERRNO). */ | |
2944 | int | |
2945 | target_fileio_open (const char *filename, int flags, int mode, | |
2946 | int *target_errno) | |
2947 | { | |
2948 | struct target_ops *t; | |
2949 | ||
2950 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2951 | { | |
2952 | if (t->to_fileio_open != NULL) | |
2953 | { | |
cd897586 | 2954 | int fd = t->to_fileio_open (t, filename, flags, mode, target_errno); |
7313baad UW |
2955 | |
2956 | if (targetdebug) | |
2957 | fprintf_unfiltered (gdb_stdlog, | |
2958 | "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n", | |
2959 | filename, flags, mode, | |
2960 | fd, fd != -1 ? 0 : *target_errno); | |
2961 | return fd; | |
2962 | } | |
2963 | } | |
2964 | ||
2965 | *target_errno = FILEIO_ENOSYS; | |
2966 | return -1; | |
2967 | } | |
2968 | ||
2969 | /* Write up to LEN bytes from WRITE_BUF to FD on the target. | |
2970 | Return the number of bytes written, or -1 if an error occurs | |
2971 | (and set *TARGET_ERRNO). */ | |
2972 | int | |
2973 | target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
2974 | ULONGEST offset, int *target_errno) | |
2975 | { | |
2976 | struct target_ops *t; | |
2977 | ||
2978 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2979 | { | |
2980 | if (t->to_fileio_pwrite != NULL) | |
2981 | { | |
0d866f62 | 2982 | int ret = t->to_fileio_pwrite (t, fd, write_buf, len, offset, |
7313baad UW |
2983 | target_errno); |
2984 | ||
2985 | if (targetdebug) | |
2986 | fprintf_unfiltered (gdb_stdlog, | |
a71b5a38 | 2987 | "target_fileio_pwrite (%d,...,%d,%s) " |
7313baad | 2988 | "= %d (%d)\n", |
a71b5a38 | 2989 | fd, len, pulongest (offset), |
7313baad UW |
2990 | ret, ret != -1 ? 0 : *target_errno); |
2991 | return ret; | |
2992 | } | |
2993 | } | |
2994 | ||
2995 | *target_errno = FILEIO_ENOSYS; | |
2996 | return -1; | |
2997 | } | |
2998 | ||
2999 | /* Read up to LEN bytes FD on the target into READ_BUF. | |
3000 | Return the number of bytes read, or -1 if an error occurs | |
3001 | (and set *TARGET_ERRNO). */ | |
3002 | int | |
3003 | target_fileio_pread (int fd, gdb_byte *read_buf, int len, | |
3004 | ULONGEST offset, int *target_errno) | |
3005 | { | |
3006 | struct target_ops *t; | |
3007 | ||
3008 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3009 | { | |
3010 | if (t->to_fileio_pread != NULL) | |
3011 | { | |
a3be983c | 3012 | int ret = t->to_fileio_pread (t, fd, read_buf, len, offset, |
7313baad UW |
3013 | target_errno); |
3014 | ||
3015 | if (targetdebug) | |
3016 | fprintf_unfiltered (gdb_stdlog, | |
a71b5a38 | 3017 | "target_fileio_pread (%d,...,%d,%s) " |
7313baad | 3018 | "= %d (%d)\n", |
a71b5a38 | 3019 | fd, len, pulongest (offset), |
7313baad UW |
3020 | ret, ret != -1 ? 0 : *target_errno); |
3021 | return ret; | |
3022 | } | |
3023 | } | |
3024 | ||
3025 | *target_errno = FILEIO_ENOSYS; | |
3026 | return -1; | |
3027 | } | |
3028 | ||
3029 | /* Close FD on the target. Return 0, or -1 if an error occurs | |
3030 | (and set *TARGET_ERRNO). */ | |
3031 | int | |
3032 | target_fileio_close (int fd, int *target_errno) | |
3033 | { | |
3034 | struct target_ops *t; | |
3035 | ||
3036 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3037 | { | |
3038 | if (t->to_fileio_close != NULL) | |
3039 | { | |
df39ea25 | 3040 | int ret = t->to_fileio_close (t, fd, target_errno); |
7313baad UW |
3041 | |
3042 | if (targetdebug) | |
3043 | fprintf_unfiltered (gdb_stdlog, | |
3044 | "target_fileio_close (%d) = %d (%d)\n", | |
3045 | fd, ret, ret != -1 ? 0 : *target_errno); | |
3046 | return ret; | |
3047 | } | |
3048 | } | |
3049 | ||
3050 | *target_errno = FILEIO_ENOSYS; | |
3051 | return -1; | |
3052 | } | |
3053 | ||
3054 | /* Unlink FILENAME on the target. Return 0, or -1 if an error | |
3055 | occurs (and set *TARGET_ERRNO). */ | |
3056 | int | |
3057 | target_fileio_unlink (const char *filename, int *target_errno) | |
3058 | { | |
3059 | struct target_ops *t; | |
3060 | ||
3061 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3062 | { | |
3063 | if (t->to_fileio_unlink != NULL) | |
3064 | { | |
dbbca37d | 3065 | int ret = t->to_fileio_unlink (t, filename, target_errno); |
7313baad UW |
3066 | |
3067 | if (targetdebug) | |
3068 | fprintf_unfiltered (gdb_stdlog, | |
3069 | "target_fileio_unlink (%s) = %d (%d)\n", | |
3070 | filename, ret, ret != -1 ? 0 : *target_errno); | |
3071 | return ret; | |
3072 | } | |
3073 | } | |
3074 | ||
3075 | *target_errno = FILEIO_ENOSYS; | |
3076 | return -1; | |
3077 | } | |
3078 | ||
b9e7b9c3 UW |
3079 | /* Read value of symbolic link FILENAME on the target. Return a |
3080 | null-terminated string allocated via xmalloc, or NULL if an error | |
3081 | occurs (and set *TARGET_ERRNO). */ | |
3082 | char * | |
3083 | target_fileio_readlink (const char *filename, int *target_errno) | |
3084 | { | |
3085 | struct target_ops *t; | |
3086 | ||
3087 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3088 | { | |
3089 | if (t->to_fileio_readlink != NULL) | |
3090 | { | |
fab5aa7c | 3091 | char *ret = t->to_fileio_readlink (t, filename, target_errno); |
b9e7b9c3 UW |
3092 | |
3093 | if (targetdebug) | |
3094 | fprintf_unfiltered (gdb_stdlog, | |
3095 | "target_fileio_readlink (%s) = %s (%d)\n", | |
3096 | filename, ret? ret : "(nil)", | |
3097 | ret? 0 : *target_errno); | |
3098 | return ret; | |
3099 | } | |
3100 | } | |
3101 | ||
3102 | *target_errno = FILEIO_ENOSYS; | |
3103 | return NULL; | |
3104 | } | |
3105 | ||
7313baad UW |
3106 | static void |
3107 | target_fileio_close_cleanup (void *opaque) | |
3108 | { | |
3109 | int fd = *(int *) opaque; | |
3110 | int target_errno; | |
3111 | ||
3112 | target_fileio_close (fd, &target_errno); | |
3113 | } | |
3114 | ||
3115 | /* Read target file FILENAME. Store the result in *BUF_P and | |
3116 | return the size of the transferred data. PADDING additional bytes are | |
3117 | available in *BUF_P. This is a helper function for | |
3118 | target_fileio_read_alloc; see the declaration of that function for more | |
3119 | information. */ | |
3120 | ||
3121 | static LONGEST | |
3122 | target_fileio_read_alloc_1 (const char *filename, | |
3123 | gdb_byte **buf_p, int padding) | |
3124 | { | |
3125 | struct cleanup *close_cleanup; | |
3126 | size_t buf_alloc, buf_pos; | |
3127 | gdb_byte *buf; | |
3128 | LONGEST n; | |
3129 | int fd; | |
3130 | int target_errno; | |
3131 | ||
3132 | fd = target_fileio_open (filename, FILEIO_O_RDONLY, 0700, &target_errno); | |
3133 | if (fd == -1) | |
3134 | return -1; | |
3135 | ||
3136 | close_cleanup = make_cleanup (target_fileio_close_cleanup, &fd); | |
3137 | ||
3138 | /* Start by reading up to 4K at a time. The target will throttle | |
3139 | this number down if necessary. */ | |
3140 | buf_alloc = 4096; | |
3141 | buf = xmalloc (buf_alloc); | |
3142 | buf_pos = 0; | |
3143 | while (1) | |
3144 | { | |
3145 | n = target_fileio_pread (fd, &buf[buf_pos], | |
3146 | buf_alloc - buf_pos - padding, buf_pos, | |
3147 | &target_errno); | |
3148 | if (n < 0) | |
3149 | { | |
3150 | /* An error occurred. */ | |
3151 | do_cleanups (close_cleanup); | |
3152 | xfree (buf); | |
3153 | return -1; | |
3154 | } | |
3155 | else if (n == 0) | |
3156 | { | |
3157 | /* Read all there was. */ | |
3158 | do_cleanups (close_cleanup); | |
3159 | if (buf_pos == 0) | |
3160 | xfree (buf); | |
3161 | else | |
3162 | *buf_p = buf; | |
3163 | return buf_pos; | |
3164 | } | |
3165 | ||
3166 | buf_pos += n; | |
3167 | ||
3168 | /* If the buffer is filling up, expand it. */ | |
3169 | if (buf_alloc < buf_pos * 2) | |
3170 | { | |
3171 | buf_alloc *= 2; | |
3172 | buf = xrealloc (buf, buf_alloc); | |
3173 | } | |
3174 | ||
3175 | QUIT; | |
3176 | } | |
3177 | } | |
3178 | ||
3179 | /* Read target file FILENAME. Store the result in *BUF_P and return | |
3180 | the size of the transferred data. See the declaration in "target.h" | |
3181 | function for more information about the return value. */ | |
3182 | ||
3183 | LONGEST | |
3184 | target_fileio_read_alloc (const char *filename, gdb_byte **buf_p) | |
3185 | { | |
3186 | return target_fileio_read_alloc_1 (filename, buf_p, 0); | |
3187 | } | |
3188 | ||
3189 | /* Read target file FILENAME. The result is NUL-terminated and | |
3190 | returned as a string, allocated using xmalloc. If an error occurs | |
3191 | or the transfer is unsupported, NULL is returned. Empty objects | |
3192 | are returned as allocated but empty strings. A warning is issued | |
3193 | if the result contains any embedded NUL bytes. */ | |
3194 | ||
3195 | char * | |
3196 | target_fileio_read_stralloc (const char *filename) | |
3197 | { | |
39086a0e PA |
3198 | gdb_byte *buffer; |
3199 | char *bufstr; | |
7313baad UW |
3200 | LONGEST i, transferred; |
3201 | ||
39086a0e PA |
3202 | transferred = target_fileio_read_alloc_1 (filename, &buffer, 1); |
3203 | bufstr = (char *) buffer; | |
7313baad UW |
3204 | |
3205 | if (transferred < 0) | |
3206 | return NULL; | |
3207 | ||
3208 | if (transferred == 0) | |
3209 | return xstrdup (""); | |
3210 | ||
39086a0e | 3211 | bufstr[transferred] = 0; |
7313baad UW |
3212 | |
3213 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
39086a0e PA |
3214 | for (i = strlen (bufstr); i < transferred; i++) |
3215 | if (bufstr[i] != 0) | |
7313baad UW |
3216 | { |
3217 | warning (_("target file %s " | |
3218 | "contained unexpected null characters"), | |
3219 | filename); | |
3220 | break; | |
3221 | } | |
3222 | ||
39086a0e | 3223 | return bufstr; |
7313baad UW |
3224 | } |
3225 | ||
3226 | ||
e0d24f8d | 3227 | static int |
31568a15 TT |
3228 | default_region_ok_for_hw_watchpoint (struct target_ops *self, |
3229 | CORE_ADDR addr, int len) | |
e0d24f8d | 3230 | { |
f5656ead | 3231 | return (len <= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT); |
ccaa32c7 GS |
3232 | } |
3233 | ||
5009afc5 AS |
3234 | static int |
3235 | default_watchpoint_addr_within_range (struct target_ops *target, | |
3236 | CORE_ADDR addr, | |
3237 | CORE_ADDR start, int length) | |
3238 | { | |
3239 | return addr >= start && addr < start + length; | |
3240 | } | |
3241 | ||
c2250ad1 UW |
3242 | static struct gdbarch * |
3243 | default_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
3244 | { | |
f5656ead | 3245 | return target_gdbarch (); |
c2250ad1 UW |
3246 | } |
3247 | ||
c906108c | 3248 | static int |
fba45db2 | 3249 | return_zero (void) |
c906108c SS |
3250 | { |
3251 | return 0; | |
3252 | } | |
3253 | ||
ed9a39eb JM |
3254 | /* |
3255 | * Find the next target down the stack from the specified target. | |
3256 | */ | |
3257 | ||
3258 | struct target_ops * | |
fba45db2 | 3259 | find_target_beneath (struct target_ops *t) |
ed9a39eb | 3260 | { |
258b763a | 3261 | return t->beneath; |
ed9a39eb JM |
3262 | } |
3263 | ||
8b06beed TT |
3264 | /* See target.h. */ |
3265 | ||
3266 | struct target_ops * | |
3267 | find_target_at (enum strata stratum) | |
3268 | { | |
3269 | struct target_ops *t; | |
3270 | ||
3271 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3272 | if (t->to_stratum == stratum) | |
3273 | return t; | |
3274 | ||
3275 | return NULL; | |
3276 | } | |
3277 | ||
c906108c SS |
3278 | \f |
3279 | /* The inferior process has died. Long live the inferior! */ | |
3280 | ||
3281 | void | |
fba45db2 | 3282 | generic_mourn_inferior (void) |
c906108c | 3283 | { |
7f9f62ba | 3284 | ptid_t ptid; |
c906108c | 3285 | |
7f9f62ba | 3286 | ptid = inferior_ptid; |
39f77062 | 3287 | inferior_ptid = null_ptid; |
7f9f62ba | 3288 | |
f59f708a PA |
3289 | /* Mark breakpoints uninserted in case something tries to delete a |
3290 | breakpoint while we delete the inferior's threads (which would | |
3291 | fail, since the inferior is long gone). */ | |
3292 | mark_breakpoints_out (); | |
3293 | ||
7f9f62ba PA |
3294 | if (!ptid_equal (ptid, null_ptid)) |
3295 | { | |
3296 | int pid = ptid_get_pid (ptid); | |
6c95b8df | 3297 | exit_inferior (pid); |
7f9f62ba PA |
3298 | } |
3299 | ||
f59f708a PA |
3300 | /* Note this wipes step-resume breakpoints, so needs to be done |
3301 | after exit_inferior, which ends up referencing the step-resume | |
3302 | breakpoints through clear_thread_inferior_resources. */ | |
c906108c | 3303 | breakpoint_init_inferior (inf_exited); |
f59f708a | 3304 | |
c906108c SS |
3305 | registers_changed (); |
3306 | ||
c906108c SS |
3307 | reopen_exec_file (); |
3308 | reinit_frame_cache (); | |
3309 | ||
9a4105ab AC |
3310 | if (deprecated_detach_hook) |
3311 | deprecated_detach_hook (); | |
c906108c SS |
3312 | } |
3313 | \f | |
fd0a2a6f MK |
3314 | /* Convert a normal process ID to a string. Returns the string in a |
3315 | static buffer. */ | |
c906108c SS |
3316 | |
3317 | char * | |
39f77062 | 3318 | normal_pid_to_str (ptid_t ptid) |
c906108c | 3319 | { |
fd0a2a6f | 3320 | static char buf[32]; |
c906108c | 3321 | |
5fff8fc0 | 3322 | xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid)); |
c906108c SS |
3323 | return buf; |
3324 | } | |
3325 | ||
2c0b251b | 3326 | static char * |
770234d3 | 3327 | default_pid_to_str (struct target_ops *ops, ptid_t ptid) |
117de6a9 PA |
3328 | { |
3329 | return normal_pid_to_str (ptid); | |
3330 | } | |
3331 | ||
9b4eba8e HZ |
3332 | /* Error-catcher for target_find_memory_regions. */ |
3333 | static int | |
2e73927c TT |
3334 | dummy_find_memory_regions (struct target_ops *self, |
3335 | find_memory_region_ftype ignore1, void *ignore2) | |
be4d1333 | 3336 | { |
9b4eba8e | 3337 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3338 | return 0; |
3339 | } | |
3340 | ||
9b4eba8e HZ |
3341 | /* Error-catcher for target_make_corefile_notes. */ |
3342 | static char * | |
fc6691b2 TT |
3343 | dummy_make_corefile_notes (struct target_ops *self, |
3344 | bfd *ignore1, int *ignore2) | |
be4d1333 | 3345 | { |
9b4eba8e | 3346 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3347 | return NULL; |
3348 | } | |
3349 | ||
c906108c SS |
3350 | /* Set up the handful of non-empty slots needed by the dummy target |
3351 | vector. */ | |
3352 | ||
3353 | static void | |
fba45db2 | 3354 | init_dummy_target (void) |
c906108c SS |
3355 | { |
3356 | dummy_target.to_shortname = "None"; | |
3357 | dummy_target.to_longname = "None"; | |
3358 | dummy_target.to_doc = ""; | |
c906108c | 3359 | dummy_target.to_create_inferior = find_default_create_inferior; |
9908b566 | 3360 | dummy_target.to_supports_non_stop = find_default_supports_non_stop; |
03583c20 UW |
3361 | dummy_target.to_supports_disable_randomization |
3362 | = find_default_supports_disable_randomization; | |
c906108c | 3363 | dummy_target.to_stratum = dummy_stratum; |
c35b1492 PA |
3364 | dummy_target.to_has_all_memory = (int (*) (struct target_ops *)) return_zero; |
3365 | dummy_target.to_has_memory = (int (*) (struct target_ops *)) return_zero; | |
3366 | dummy_target.to_has_stack = (int (*) (struct target_ops *)) return_zero; | |
3367 | dummy_target.to_has_registers = (int (*) (struct target_ops *)) return_zero; | |
aeaec162 TT |
3368 | dummy_target.to_has_execution |
3369 | = (int (*) (struct target_ops *, ptid_t)) return_zero; | |
c906108c | 3370 | dummy_target.to_magic = OPS_MAGIC; |
1101cb7b TT |
3371 | |
3372 | install_dummy_methods (&dummy_target); | |
c906108c | 3373 | } |
c906108c | 3374 | \f |
c906108c | 3375 | static void |
fba45db2 | 3376 | debug_to_open (char *args, int from_tty) |
c906108c SS |
3377 | { |
3378 | debug_target.to_open (args, from_tty); | |
3379 | ||
96baa820 | 3380 | fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty); |
c906108c SS |
3381 | } |
3382 | ||
f1c07ab0 | 3383 | void |
460014f5 | 3384 | target_close (struct target_ops *targ) |
f1c07ab0 | 3385 | { |
7fdc1521 TT |
3386 | gdb_assert (!target_is_pushed (targ)); |
3387 | ||
f1c07ab0 | 3388 | if (targ->to_xclose != NULL) |
460014f5 | 3389 | targ->to_xclose (targ); |
f1c07ab0 | 3390 | else if (targ->to_close != NULL) |
de90e03d | 3391 | targ->to_close (targ); |
947b8855 PA |
3392 | |
3393 | if (targetdebug) | |
460014f5 | 3394 | fprintf_unfiltered (gdb_stdlog, "target_close ()\n"); |
f1c07ab0 AC |
3395 | } |
3396 | ||
136d6dae VP |
3397 | void |
3398 | target_attach (char *args, int from_tty) | |
3399 | { | |
e9a29200 TT |
3400 | current_target.to_attach (¤t_target, args, from_tty); |
3401 | if (targetdebug) | |
3402 | fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n", | |
3403 | args, from_tty); | |
136d6dae VP |
3404 | } |
3405 | ||
28439f5e PA |
3406 | int |
3407 | target_thread_alive (ptid_t ptid) | |
c906108c | 3408 | { |
cbffc065 | 3409 | int retval; |
28439f5e | 3410 | |
cbffc065 TT |
3411 | retval = current_target.to_thread_alive (¤t_target, ptid); |
3412 | if (targetdebug) | |
3413 | fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n", | |
3414 | ptid_get_pid (ptid), retval); | |
28439f5e | 3415 | |
cbffc065 | 3416 | return retval; |
28439f5e PA |
3417 | } |
3418 | ||
3419 | void | |
3420 | target_find_new_threads (void) | |
3421 | { | |
09b0dc2b TT |
3422 | current_target.to_find_new_threads (¤t_target); |
3423 | if (targetdebug) | |
3424 | fprintf_unfiltered (gdb_stdlog, "target_find_new_threads ()\n"); | |
c906108c SS |
3425 | } |
3426 | ||
d914c394 SS |
3427 | void |
3428 | target_stop (ptid_t ptid) | |
3429 | { | |
3430 | if (!may_stop) | |
3431 | { | |
3432 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3433 | return; | |
3434 | } | |
3435 | ||
1eab8a48 | 3436 | (*current_target.to_stop) (¤t_target, ptid); |
d914c394 SS |
3437 | } |
3438 | ||
c906108c | 3439 | static void |
f045800c | 3440 | debug_to_post_attach (struct target_ops *self, int pid) |
c906108c | 3441 | { |
f045800c | 3442 | debug_target.to_post_attach (&debug_target, pid); |
c906108c | 3443 | |
28439f5e | 3444 | fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid); |
c906108c SS |
3445 | } |
3446 | ||
09826ec5 PA |
3447 | /* Concatenate ELEM to LIST, a comma separate list, and return the |
3448 | result. The LIST incoming argument is released. */ | |
3449 | ||
3450 | static char * | |
3451 | str_comma_list_concat_elem (char *list, const char *elem) | |
3452 | { | |
3453 | if (list == NULL) | |
3454 | return xstrdup (elem); | |
3455 | else | |
3456 | return reconcat (list, list, ", ", elem, (char *) NULL); | |
3457 | } | |
3458 | ||
3459 | /* Helper for target_options_to_string. If OPT is present in | |
3460 | TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET. | |
3461 | Returns the new resulting string. OPT is removed from | |
3462 | TARGET_OPTIONS. */ | |
3463 | ||
3464 | static char * | |
3465 | do_option (int *target_options, char *ret, | |
3466 | int opt, char *opt_str) | |
3467 | { | |
3468 | if ((*target_options & opt) != 0) | |
3469 | { | |
3470 | ret = str_comma_list_concat_elem (ret, opt_str); | |
3471 | *target_options &= ~opt; | |
3472 | } | |
3473 | ||
3474 | return ret; | |
3475 | } | |
3476 | ||
3477 | char * | |
3478 | target_options_to_string (int target_options) | |
3479 | { | |
3480 | char *ret = NULL; | |
3481 | ||
3482 | #define DO_TARG_OPTION(OPT) \ | |
3483 | ret = do_option (&target_options, ret, OPT, #OPT) | |
3484 | ||
3485 | DO_TARG_OPTION (TARGET_WNOHANG); | |
3486 | ||
3487 | if (target_options != 0) | |
3488 | ret = str_comma_list_concat_elem (ret, "unknown???"); | |
3489 | ||
3490 | if (ret == NULL) | |
3491 | ret = xstrdup (""); | |
3492 | return ret; | |
3493 | } | |
3494 | ||
bf0c5130 | 3495 | static void |
56be3814 UW |
3496 | debug_print_register (const char * func, |
3497 | struct regcache *regcache, int regno) | |
bf0c5130 | 3498 | { |
f8d29908 | 3499 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
5d502164 | 3500 | |
bf0c5130 | 3501 | fprintf_unfiltered (gdb_stdlog, "%s ", func); |
f8d29908 | 3502 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) |
f8d29908 UW |
3503 | && gdbarch_register_name (gdbarch, regno) != NULL |
3504 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') | |
3505 | fprintf_unfiltered (gdb_stdlog, "(%s)", | |
3506 | gdbarch_register_name (gdbarch, regno)); | |
bf0c5130 AC |
3507 | else |
3508 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
0ff58721 | 3509 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) |
bf0c5130 | 3510 | { |
e17a4113 | 3511 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
f8d29908 | 3512 | int i, size = register_size (gdbarch, regno); |
e362b510 | 3513 | gdb_byte buf[MAX_REGISTER_SIZE]; |
5d502164 | 3514 | |
0ff58721 | 3515 | regcache_raw_collect (regcache, regno, buf); |
bf0c5130 | 3516 | fprintf_unfiltered (gdb_stdlog, " = "); |
81c4a259 | 3517 | for (i = 0; i < size; i++) |
bf0c5130 AC |
3518 | { |
3519 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
3520 | } | |
81c4a259 | 3521 | if (size <= sizeof (LONGEST)) |
bf0c5130 | 3522 | { |
e17a4113 | 3523 | ULONGEST val = extract_unsigned_integer (buf, size, byte_order); |
5d502164 | 3524 | |
0b1553bc UW |
3525 | fprintf_unfiltered (gdb_stdlog, " %s %s", |
3526 | core_addr_to_string_nz (val), plongest (val)); | |
bf0c5130 AC |
3527 | } |
3528 | } | |
3529 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
3530 | } | |
3531 | ||
28439f5e PA |
3532 | void |
3533 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 3534 | { |
ad5989bd TT |
3535 | current_target.to_fetch_registers (¤t_target, regcache, regno); |
3536 | if (targetdebug) | |
3537 | debug_print_register ("target_fetch_registers", regcache, regno); | |
c906108c SS |
3538 | } |
3539 | ||
28439f5e PA |
3540 | void |
3541 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 3542 | { |
28439f5e | 3543 | struct target_ops *t; |
5d502164 | 3544 | |
d914c394 SS |
3545 | if (!may_write_registers) |
3546 | error (_("Writing to registers is not allowed (regno %d)"), regno); | |
3547 | ||
6b84065d TT |
3548 | current_target.to_store_registers (¤t_target, regcache, regno); |
3549 | if (targetdebug) | |
28439f5e | 3550 | { |
6b84065d | 3551 | debug_print_register ("target_store_registers", regcache, regno); |
28439f5e | 3552 | } |
c906108c SS |
3553 | } |
3554 | ||
dc146f7c VP |
3555 | int |
3556 | target_core_of_thread (ptid_t ptid) | |
3557 | { | |
9e538d0d | 3558 | int retval = current_target.to_core_of_thread (¤t_target, ptid); |
dc146f7c | 3559 | |
9e538d0d TT |
3560 | if (targetdebug) |
3561 | fprintf_unfiltered (gdb_stdlog, | |
3562 | "target_core_of_thread (%d) = %d\n", | |
3563 | ptid_get_pid (ptid), retval); | |
3564 | return retval; | |
dc146f7c VP |
3565 | } |
3566 | ||
4a5e7a5b PA |
3567 | int |
3568 | target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3569 | { | |
eb276a6b TT |
3570 | int retval = current_target.to_verify_memory (¤t_target, |
3571 | data, memaddr, size); | |
5d502164 | 3572 | |
eb276a6b TT |
3573 | if (targetdebug) |
3574 | fprintf_unfiltered (gdb_stdlog, | |
3575 | "target_verify_memory (%s, %s) = %d\n", | |
3576 | paddress (target_gdbarch (), memaddr), | |
3577 | pulongest (size), | |
3578 | retval); | |
3579 | return retval; | |
4a5e7a5b PA |
3580 | } |
3581 | ||
9c06b0b4 TJB |
3582 | /* The documentation for this function is in its prototype declaration in |
3583 | target.h. */ | |
3584 | ||
3585 | int | |
3586 | target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
3587 | { | |
cd4ae029 | 3588 | int ret; |
9c06b0b4 | 3589 | |
cd4ae029 TT |
3590 | ret = current_target.to_insert_mask_watchpoint (¤t_target, |
3591 | addr, mask, rw); | |
9c06b0b4 | 3592 | |
cd4ae029 TT |
3593 | if (targetdebug) |
3594 | fprintf_unfiltered (gdb_stdlog, "\ | |
9c06b0b4 | 3595 | target_insert_mask_watchpoint (%s, %s, %d) = %d\n", |
cd4ae029 TT |
3596 | core_addr_to_string (addr), |
3597 | core_addr_to_string (mask), rw, ret); | |
3598 | ||
3599 | return ret; | |
9c06b0b4 TJB |
3600 | } |
3601 | ||
3602 | /* The documentation for this function is in its prototype declaration in | |
3603 | target.h. */ | |
3604 | ||
3605 | int | |
3606 | target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
3607 | { | |
8b1c364c | 3608 | int ret; |
9c06b0b4 | 3609 | |
8b1c364c TT |
3610 | ret = current_target.to_remove_mask_watchpoint (¤t_target, |
3611 | addr, mask, rw); | |
9c06b0b4 | 3612 | |
8b1c364c TT |
3613 | if (targetdebug) |
3614 | fprintf_unfiltered (gdb_stdlog, "\ | |
9c06b0b4 | 3615 | target_remove_mask_watchpoint (%s, %s, %d) = %d\n", |
8b1c364c TT |
3616 | core_addr_to_string (addr), |
3617 | core_addr_to_string (mask), rw, ret); | |
9c06b0b4 | 3618 | |
8b1c364c | 3619 | return ret; |
9c06b0b4 TJB |
3620 | } |
3621 | ||
3622 | /* The documentation for this function is in its prototype declaration | |
3623 | in target.h. */ | |
3624 | ||
3625 | int | |
3626 | target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask) | |
3627 | { | |
6c7e5e5c TT |
3628 | return current_target.to_masked_watch_num_registers (¤t_target, |
3629 | addr, mask); | |
9c06b0b4 TJB |
3630 | } |
3631 | ||
f1310107 TJB |
3632 | /* The documentation for this function is in its prototype declaration |
3633 | in target.h. */ | |
3634 | ||
3635 | int | |
3636 | target_ranged_break_num_registers (void) | |
3637 | { | |
a134316b | 3638 | return current_target.to_ranged_break_num_registers (¤t_target); |
f1310107 TJB |
3639 | } |
3640 | ||
02d27625 MM |
3641 | /* See target.h. */ |
3642 | ||
02d27625 MM |
3643 | struct btrace_target_info * |
3644 | target_enable_btrace (ptid_t ptid) | |
3645 | { | |
6dc7fcf4 | 3646 | return current_target.to_enable_btrace (¤t_target, ptid); |
02d27625 MM |
3647 | } |
3648 | ||
3649 | /* See target.h. */ | |
3650 | ||
3651 | void | |
3652 | target_disable_btrace (struct btrace_target_info *btinfo) | |
3653 | { | |
8dc292d3 | 3654 | current_target.to_disable_btrace (¤t_target, btinfo); |
02d27625 MM |
3655 | } |
3656 | ||
3657 | /* See target.h. */ | |
3658 | ||
3659 | void | |
3660 | target_teardown_btrace (struct btrace_target_info *btinfo) | |
3661 | { | |
9ace480d | 3662 | current_target.to_teardown_btrace (¤t_target, btinfo); |
02d27625 MM |
3663 | } |
3664 | ||
3665 | /* See target.h. */ | |
3666 | ||
969c39fb MM |
3667 | enum btrace_error |
3668 | target_read_btrace (VEC (btrace_block_s) **btrace, | |
3669 | struct btrace_target_info *btinfo, | |
02d27625 MM |
3670 | enum btrace_read_type type) |
3671 | { | |
eb5b20d4 | 3672 | return current_target.to_read_btrace (¤t_target, btrace, btinfo, type); |
02d27625 MM |
3673 | } |
3674 | ||
d02ed0bb MM |
3675 | /* See target.h. */ |
3676 | ||
7c1687a9 MM |
3677 | void |
3678 | target_stop_recording (void) | |
3679 | { | |
ee97f592 | 3680 | current_target.to_stop_recording (¤t_target); |
7c1687a9 MM |
3681 | } |
3682 | ||
3683 | /* See target.h. */ | |
3684 | ||
d02ed0bb MM |
3685 | void |
3686 | target_info_record (void) | |
3687 | { | |
3688 | struct target_ops *t; | |
3689 | ||
3690 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3691 | if (t->to_info_record != NULL) | |
3692 | { | |
630d6a4a | 3693 | t->to_info_record (t); |
d02ed0bb MM |
3694 | return; |
3695 | } | |
3696 | ||
3697 | tcomplain (); | |
3698 | } | |
3699 | ||
3700 | /* See target.h. */ | |
3701 | ||
3702 | void | |
85e1311a | 3703 | target_save_record (const char *filename) |
d02ed0bb | 3704 | { |
f09e2107 | 3705 | current_target.to_save_record (¤t_target, filename); |
d02ed0bb MM |
3706 | } |
3707 | ||
3708 | /* See target.h. */ | |
3709 | ||
3710 | int | |
3711 | target_supports_delete_record (void) | |
3712 | { | |
3713 | struct target_ops *t; | |
3714 | ||
3715 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3716 | if (t->to_delete_record != NULL) | |
3717 | return 1; | |
3718 | ||
3719 | return 0; | |
3720 | } | |
3721 | ||
3722 | /* See target.h. */ | |
3723 | ||
3724 | void | |
3725 | target_delete_record (void) | |
3726 | { | |
07366925 | 3727 | current_target.to_delete_record (¤t_target); |
d02ed0bb MM |
3728 | } |
3729 | ||
3730 | /* See target.h. */ | |
3731 | ||
3732 | int | |
3733 | target_record_is_replaying (void) | |
3734 | { | |
dd2e9d25 | 3735 | return current_target.to_record_is_replaying (¤t_target); |
d02ed0bb MM |
3736 | } |
3737 | ||
3738 | /* See target.h. */ | |
3739 | ||
3740 | void | |
3741 | target_goto_record_begin (void) | |
3742 | { | |
671e76cc | 3743 | current_target.to_goto_record_begin (¤t_target); |
d02ed0bb MM |
3744 | } |
3745 | ||
3746 | /* See target.h. */ | |
3747 | ||
3748 | void | |
3749 | target_goto_record_end (void) | |
3750 | { | |
e9179bb3 | 3751 | current_target.to_goto_record_end (¤t_target); |
d02ed0bb MM |
3752 | } |
3753 | ||
3754 | /* See target.h. */ | |
3755 | ||
3756 | void | |
3757 | target_goto_record (ULONGEST insn) | |
3758 | { | |
05969c84 | 3759 | current_target.to_goto_record (¤t_target, insn); |
d02ed0bb MM |
3760 | } |
3761 | ||
67c86d06 MM |
3762 | /* See target.h. */ |
3763 | ||
3764 | void | |
3765 | target_insn_history (int size, int flags) | |
3766 | { | |
3679abfa | 3767 | current_target.to_insn_history (¤t_target, size, flags); |
67c86d06 MM |
3768 | } |
3769 | ||
3770 | /* See target.h. */ | |
3771 | ||
3772 | void | |
3773 | target_insn_history_from (ULONGEST from, int size, int flags) | |
3774 | { | |
8444ab58 | 3775 | current_target.to_insn_history_from (¤t_target, from, size, flags); |
67c86d06 MM |
3776 | } |
3777 | ||
3778 | /* See target.h. */ | |
3779 | ||
3780 | void | |
3781 | target_insn_history_range (ULONGEST begin, ULONGEST end, int flags) | |
3782 | { | |
c29302cc | 3783 | current_target.to_insn_history_range (¤t_target, begin, end, flags); |
67c86d06 MM |
3784 | } |
3785 | ||
15984c13 MM |
3786 | /* See target.h. */ |
3787 | ||
3788 | void | |
3789 | target_call_history (int size, int flags) | |
3790 | { | |
170049d4 | 3791 | current_target.to_call_history (¤t_target, size, flags); |
15984c13 MM |
3792 | } |
3793 | ||
3794 | /* See target.h. */ | |
3795 | ||
3796 | void | |
3797 | target_call_history_from (ULONGEST begin, int size, int flags) | |
3798 | { | |
16fc27d6 | 3799 | current_target.to_call_history_from (¤t_target, begin, size, flags); |
15984c13 MM |
3800 | } |
3801 | ||
3802 | /* See target.h. */ | |
3803 | ||
3804 | void | |
3805 | target_call_history_range (ULONGEST begin, ULONGEST end, int flags) | |
3806 | { | |
115d9817 | 3807 | current_target.to_call_history_range (¤t_target, begin, end, flags); |
15984c13 MM |
3808 | } |
3809 | ||
c906108c | 3810 | static void |
f32dbf8c | 3811 | debug_to_prepare_to_store (struct target_ops *self, struct regcache *regcache) |
c906108c | 3812 | { |
f32dbf8c | 3813 | debug_target.to_prepare_to_store (&debug_target, regcache); |
c906108c | 3814 | |
96baa820 | 3815 | fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n"); |
c906108c SS |
3816 | } |
3817 | ||
ea001bdc MM |
3818 | /* See target.h. */ |
3819 | ||
3820 | const struct frame_unwind * | |
3821 | target_get_unwinder (void) | |
3822 | { | |
3823 | struct target_ops *t; | |
3824 | ||
3825 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3826 | if (t->to_get_unwinder != NULL) | |
3827 | return t->to_get_unwinder; | |
3828 | ||
3829 | return NULL; | |
3830 | } | |
3831 | ||
3832 | /* See target.h. */ | |
3833 | ||
3834 | const struct frame_unwind * | |
3835 | target_get_tailcall_unwinder (void) | |
3836 | { | |
3837 | struct target_ops *t; | |
3838 | ||
3839 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3840 | if (t->to_get_tailcall_unwinder != NULL) | |
3841 | return t->to_get_tailcall_unwinder; | |
3842 | ||
3843 | return NULL; | |
3844 | } | |
3845 | ||
118e6252 MM |
3846 | /* See target.h. */ |
3847 | ||
3848 | CORE_ADDR | |
3849 | forward_target_decr_pc_after_break (struct target_ops *ops, | |
3850 | struct gdbarch *gdbarch) | |
3851 | { | |
3852 | for (; ops != NULL; ops = ops->beneath) | |
3853 | if (ops->to_decr_pc_after_break != NULL) | |
3854 | return ops->to_decr_pc_after_break (ops, gdbarch); | |
3855 | ||
3856 | return gdbarch_decr_pc_after_break (gdbarch); | |
3857 | } | |
3858 | ||
3859 | /* See target.h. */ | |
3860 | ||
3861 | CORE_ADDR | |
3862 | target_decr_pc_after_break (struct gdbarch *gdbarch) | |
3863 | { | |
3864 | return forward_target_decr_pc_after_break (current_target.beneath, gdbarch); | |
3865 | } | |
3866 | ||
c906108c | 3867 | static int |
961cb7b5 | 3868 | deprecated_debug_xfer_memory (CORE_ADDR memaddr, bfd_byte *myaddr, int len, |
c8e73a31 AC |
3869 | int write, struct mem_attrib *attrib, |
3870 | struct target_ops *target) | |
c906108c SS |
3871 | { |
3872 | int retval; | |
3873 | ||
c8e73a31 AC |
3874 | retval = debug_target.deprecated_xfer_memory (memaddr, myaddr, len, write, |
3875 | attrib, target); | |
c906108c | 3876 | |
96baa820 | 3877 | fprintf_unfiltered (gdb_stdlog, |
53b71562 | 3878 | "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d", |
f5656ead | 3879 | paddress (target_gdbarch (), memaddr), len, |
5af949e3 | 3880 | write ? "write" : "read", retval); |
c906108c | 3881 | |
c906108c SS |
3882 | if (retval > 0) |
3883 | { | |
3884 | int i; | |
3885 | ||
96baa820 | 3886 | fputs_unfiltered (", bytes =", gdb_stdlog); |
c906108c SS |
3887 | for (i = 0; i < retval; i++) |
3888 | { | |
53b71562 | 3889 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
333dabeb DJ |
3890 | { |
3891 | if (targetdebug < 2 && i > 0) | |
3892 | { | |
3893 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
3894 | break; | |
3895 | } | |
3896 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
3897 | } | |
2bc416ba | 3898 | |
96baa820 | 3899 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
c906108c SS |
3900 | } |
3901 | } | |
3902 | ||
96baa820 | 3903 | fputc_unfiltered ('\n', gdb_stdlog); |
c906108c SS |
3904 | |
3905 | return retval; | |
3906 | } | |
3907 | ||
3908 | static void | |
fba45db2 | 3909 | debug_to_files_info (struct target_ops *target) |
c906108c SS |
3910 | { |
3911 | debug_target.to_files_info (target); | |
3912 | ||
96baa820 | 3913 | fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n"); |
c906108c SS |
3914 | } |
3915 | ||
3916 | static int | |
3db08215 | 3917 | debug_to_insert_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, |
a6d9a66e | 3918 | struct bp_target_info *bp_tgt) |
c906108c SS |
3919 | { |
3920 | int retval; | |
3921 | ||
6b84065d | 3922 | retval = debug_target.to_insert_breakpoint (&debug_target, gdbarch, bp_tgt); |
c906108c | 3923 | |
96baa820 | 3924 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
3925 | "target_insert_breakpoint (%s, xxx) = %ld\n", |
3926 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 3927 | (unsigned long) retval); |
c906108c SS |
3928 | return retval; |
3929 | } | |
3930 | ||
3931 | static int | |
3db08215 | 3932 | debug_to_remove_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, |
a6d9a66e | 3933 | struct bp_target_info *bp_tgt) |
c906108c SS |
3934 | { |
3935 | int retval; | |
3936 | ||
6b84065d | 3937 | retval = debug_target.to_remove_breakpoint (&debug_target, gdbarch, bp_tgt); |
c906108c | 3938 | |
96baa820 | 3939 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
3940 | "target_remove_breakpoint (%s, xxx) = %ld\n", |
3941 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 3942 | (unsigned long) retval); |
c906108c SS |
3943 | return retval; |
3944 | } | |
3945 | ||
ccaa32c7 | 3946 | static int |
5461485a TT |
3947 | debug_to_can_use_hw_breakpoint (struct target_ops *self, |
3948 | int type, int cnt, int from_tty) | |
ccaa32c7 GS |
3949 | { |
3950 | int retval; | |
3951 | ||
5461485a TT |
3952 | retval = debug_target.to_can_use_hw_breakpoint (&debug_target, |
3953 | type, cnt, from_tty); | |
ccaa32c7 GS |
3954 | |
3955 | fprintf_unfiltered (gdb_stdlog, | |
3956 | "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n", | |
3957 | (unsigned long) type, | |
3958 | (unsigned long) cnt, | |
3959 | (unsigned long) from_tty, | |
3960 | (unsigned long) retval); | |
3961 | return retval; | |
3962 | } | |
3963 | ||
e0d24f8d | 3964 | static int |
31568a15 TT |
3965 | debug_to_region_ok_for_hw_watchpoint (struct target_ops *self, |
3966 | CORE_ADDR addr, int len) | |
e0d24f8d WZ |
3967 | { |
3968 | CORE_ADDR retval; | |
3969 | ||
31568a15 TT |
3970 | retval = debug_target.to_region_ok_for_hw_watchpoint (&debug_target, |
3971 | addr, len); | |
e0d24f8d WZ |
3972 | |
3973 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3974 | "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n", |
3975 | core_addr_to_string (addr), (unsigned long) len, | |
3976 | core_addr_to_string (retval)); | |
e0d24f8d WZ |
3977 | return retval; |
3978 | } | |
3979 | ||
0cf6dd15 | 3980 | static int |
c3a5ff89 TT |
3981 | debug_to_can_accel_watchpoint_condition (struct target_ops *self, |
3982 | CORE_ADDR addr, int len, int rw, | |
0cf6dd15 TJB |
3983 | struct expression *cond) |
3984 | { | |
3985 | int retval; | |
3986 | ||
c3a5ff89 TT |
3987 | retval = debug_target.to_can_accel_watchpoint_condition (&debug_target, |
3988 | addr, len, | |
3e43a32a | 3989 | rw, cond); |
0cf6dd15 TJB |
3990 | |
3991 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
3992 | "target_can_accel_watchpoint_condition " |
3993 | "(%s, %d, %d, %s) = %ld\n", | |
bd91e7ae OS |
3994 | core_addr_to_string (addr), len, rw, |
3995 | host_address_to_string (cond), (unsigned long) retval); | |
0cf6dd15 TJB |
3996 | return retval; |
3997 | } | |
3998 | ||
ccaa32c7 | 3999 | static int |
6a109b6b | 4000 | debug_to_stopped_by_watchpoint (struct target_ops *ops) |
ccaa32c7 GS |
4001 | { |
4002 | int retval; | |
4003 | ||
6a109b6b | 4004 | retval = debug_target.to_stopped_by_watchpoint (&debug_target); |
ccaa32c7 GS |
4005 | |
4006 | fprintf_unfiltered (gdb_stdlog, | |
d92524f1 | 4007 | "target_stopped_by_watchpoint () = %ld\n", |
ccaa32c7 GS |
4008 | (unsigned long) retval); |
4009 | return retval; | |
4010 | } | |
4011 | ||
4aa7a7f5 JJ |
4012 | static int |
4013 | debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr) | |
ccaa32c7 | 4014 | { |
4aa7a7f5 | 4015 | int retval; |
ccaa32c7 | 4016 | |
4aa7a7f5 | 4017 | retval = debug_target.to_stopped_data_address (target, addr); |
ccaa32c7 GS |
4018 | |
4019 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4020 | "target_stopped_data_address ([%s]) = %ld\n", |
4021 | core_addr_to_string (*addr), | |
4aa7a7f5 | 4022 | (unsigned long)retval); |
ccaa32c7 GS |
4023 | return retval; |
4024 | } | |
4025 | ||
5009afc5 AS |
4026 | static int |
4027 | debug_to_watchpoint_addr_within_range (struct target_ops *target, | |
4028 | CORE_ADDR addr, | |
4029 | CORE_ADDR start, int length) | |
4030 | { | |
4031 | int retval; | |
4032 | ||
4033 | retval = debug_target.to_watchpoint_addr_within_range (target, addr, | |
4034 | start, length); | |
4035 | ||
4036 | fprintf_filtered (gdb_stdlog, | |
bd91e7ae OS |
4037 | "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n", |
4038 | core_addr_to_string (addr), core_addr_to_string (start), | |
4039 | length, retval); | |
5009afc5 AS |
4040 | return retval; |
4041 | } | |
4042 | ||
ccaa32c7 | 4043 | static int |
23a26771 TT |
4044 | debug_to_insert_hw_breakpoint (struct target_ops *self, |
4045 | struct gdbarch *gdbarch, | |
a6d9a66e | 4046 | struct bp_target_info *bp_tgt) |
ccaa32c7 GS |
4047 | { |
4048 | int retval; | |
4049 | ||
23a26771 TT |
4050 | retval = debug_target.to_insert_hw_breakpoint (&debug_target, |
4051 | gdbarch, bp_tgt); | |
ccaa32c7 GS |
4052 | |
4053 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4054 | "target_insert_hw_breakpoint (%s, xxx) = %ld\n", |
4055 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
4056 | (unsigned long) retval); |
4057 | return retval; | |
4058 | } | |
4059 | ||
4060 | static int | |
a64dc96c TT |
4061 | debug_to_remove_hw_breakpoint (struct target_ops *self, |
4062 | struct gdbarch *gdbarch, | |
a6d9a66e | 4063 | struct bp_target_info *bp_tgt) |
ccaa32c7 GS |
4064 | { |
4065 | int retval; | |
4066 | ||
a64dc96c TT |
4067 | retval = debug_target.to_remove_hw_breakpoint (&debug_target, |
4068 | gdbarch, bp_tgt); | |
ccaa32c7 GS |
4069 | |
4070 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4071 | "target_remove_hw_breakpoint (%s, xxx) = %ld\n", |
4072 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
4073 | (unsigned long) retval); |
4074 | return retval; | |
4075 | } | |
4076 | ||
4077 | static int | |
7bb99c53 TT |
4078 | debug_to_insert_watchpoint (struct target_ops *self, |
4079 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 4080 | struct expression *cond) |
ccaa32c7 GS |
4081 | { |
4082 | int retval; | |
4083 | ||
7bb99c53 TT |
4084 | retval = debug_target.to_insert_watchpoint (&debug_target, |
4085 | addr, len, type, cond); | |
ccaa32c7 GS |
4086 | |
4087 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4088 | "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n", |
4089 | core_addr_to_string (addr), len, type, | |
4090 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
4091 | return retval; |
4092 | } | |
4093 | ||
4094 | static int | |
11b5219a TT |
4095 | debug_to_remove_watchpoint (struct target_ops *self, |
4096 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 4097 | struct expression *cond) |
ccaa32c7 GS |
4098 | { |
4099 | int retval; | |
4100 | ||
11b5219a TT |
4101 | retval = debug_target.to_remove_watchpoint (&debug_target, |
4102 | addr, len, type, cond); | |
ccaa32c7 GS |
4103 | |
4104 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4105 | "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n", |
4106 | core_addr_to_string (addr), len, type, | |
4107 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
4108 | return retval; |
4109 | } | |
4110 | ||
c906108c | 4111 | static void |
c42bf286 | 4112 | debug_to_terminal_init (struct target_ops *self) |
c906108c | 4113 | { |
c42bf286 | 4114 | debug_target.to_terminal_init (&debug_target); |
c906108c | 4115 | |
96baa820 | 4116 | fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n"); |
c906108c SS |
4117 | } |
4118 | ||
4119 | static void | |
d2f640d4 | 4120 | debug_to_terminal_inferior (struct target_ops *self) |
c906108c | 4121 | { |
d2f640d4 | 4122 | debug_target.to_terminal_inferior (&debug_target); |
c906108c | 4123 | |
96baa820 | 4124 | fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n"); |
c906108c SS |
4125 | } |
4126 | ||
4127 | static void | |
2e1e1a19 | 4128 | debug_to_terminal_ours_for_output (struct target_ops *self) |
c906108c | 4129 | { |
2e1e1a19 | 4130 | debug_target.to_terminal_ours_for_output (&debug_target); |
c906108c | 4131 | |
96baa820 | 4132 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n"); |
c906108c SS |
4133 | } |
4134 | ||
4135 | static void | |
e3594fd1 | 4136 | debug_to_terminal_ours (struct target_ops *self) |
c906108c | 4137 | { |
e3594fd1 | 4138 | debug_target.to_terminal_ours (&debug_target); |
c906108c | 4139 | |
96baa820 | 4140 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n"); |
c906108c SS |
4141 | } |
4142 | ||
a790ad35 | 4143 | static void |
ae3bd431 | 4144 | debug_to_terminal_save_ours (struct target_ops *self) |
a790ad35 | 4145 | { |
ae3bd431 | 4146 | debug_target.to_terminal_save_ours (&debug_target); |
a790ad35 SC |
4147 | |
4148 | fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n"); | |
4149 | } | |
4150 | ||
c906108c | 4151 | static void |
0a4f40a2 TT |
4152 | debug_to_terminal_info (struct target_ops *self, |
4153 | const char *arg, int from_tty) | |
c906108c | 4154 | { |
0a4f40a2 | 4155 | debug_target.to_terminal_info (&debug_target, arg, from_tty); |
c906108c | 4156 | |
96baa820 | 4157 | fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg, |
c906108c SS |
4158 | from_tty); |
4159 | } | |
4160 | ||
c906108c | 4161 | static void |
71a9f134 | 4162 | debug_to_load (struct target_ops *self, char *args, int from_tty) |
c906108c | 4163 | { |
71a9f134 | 4164 | debug_target.to_load (&debug_target, args, from_tty); |
c906108c | 4165 | |
96baa820 | 4166 | fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty); |
c906108c SS |
4167 | } |
4168 | ||
c906108c | 4169 | static void |
2e97a79e | 4170 | debug_to_post_startup_inferior (struct target_ops *self, ptid_t ptid) |
c906108c | 4171 | { |
2e97a79e | 4172 | debug_target.to_post_startup_inferior (&debug_target, ptid); |
c906108c | 4173 | |
96baa820 | 4174 | fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n", |
dfd4cc63 | 4175 | ptid_get_pid (ptid)); |
c906108c SS |
4176 | } |
4177 | ||
77b06cd7 | 4178 | static int |
a863b201 | 4179 | debug_to_insert_fork_catchpoint (struct target_ops *self, int pid) |
c906108c | 4180 | { |
77b06cd7 TJB |
4181 | int retval; |
4182 | ||
a863b201 | 4183 | retval = debug_target.to_insert_fork_catchpoint (&debug_target, pid); |
77b06cd7 TJB |
4184 | |
4185 | fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d) = %d\n", | |
4186 | pid, retval); | |
c906108c | 4187 | |
77b06cd7 | 4188 | return retval; |
c906108c SS |
4189 | } |
4190 | ||
4191 | static int | |
973fc227 | 4192 | debug_to_remove_fork_catchpoint (struct target_ops *self, int pid) |
c906108c | 4193 | { |
c5aa993b | 4194 | int retval; |
c906108c | 4195 | |
973fc227 | 4196 | retval = debug_target.to_remove_fork_catchpoint (&debug_target, pid); |
c906108c | 4197 | |
96baa820 | 4198 | fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n", |
c5aa993b | 4199 | pid, retval); |
c906108c SS |
4200 | |
4201 | return retval; | |
4202 | } | |
4203 | ||
77b06cd7 | 4204 | static int |
3ecc7da0 | 4205 | debug_to_insert_vfork_catchpoint (struct target_ops *self, int pid) |
c906108c | 4206 | { |
77b06cd7 TJB |
4207 | int retval; |
4208 | ||
3ecc7da0 | 4209 | retval = debug_target.to_insert_vfork_catchpoint (&debug_target, pid); |
c906108c | 4210 | |
77b06cd7 TJB |
4211 | fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d) = %d\n", |
4212 | pid, retval); | |
4213 | ||
4214 | return retval; | |
c906108c SS |
4215 | } |
4216 | ||
4217 | static int | |
e98cf0cd | 4218 | debug_to_remove_vfork_catchpoint (struct target_ops *self, int pid) |
c906108c | 4219 | { |
c5aa993b | 4220 | int retval; |
c906108c | 4221 | |
e98cf0cd | 4222 | retval = debug_target.to_remove_vfork_catchpoint (&debug_target, pid); |
c906108c | 4223 | |
96baa820 | 4224 | fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n", |
c5aa993b | 4225 | pid, retval); |
c906108c SS |
4226 | |
4227 | return retval; | |
4228 | } | |
4229 | ||
77b06cd7 | 4230 | static int |
ba025e51 | 4231 | debug_to_insert_exec_catchpoint (struct target_ops *self, int pid) |
c906108c | 4232 | { |
77b06cd7 TJB |
4233 | int retval; |
4234 | ||
ba025e51 | 4235 | retval = debug_target.to_insert_exec_catchpoint (&debug_target, pid); |
c906108c | 4236 | |
77b06cd7 TJB |
4237 | fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d) = %d\n", |
4238 | pid, retval); | |
4239 | ||
4240 | return retval; | |
c906108c SS |
4241 | } |
4242 | ||
4243 | static int | |
758e29d2 | 4244 | debug_to_remove_exec_catchpoint (struct target_ops *self, int pid) |
c906108c | 4245 | { |
c5aa993b | 4246 | int retval; |
c906108c | 4247 | |
758e29d2 | 4248 | retval = debug_target.to_remove_exec_catchpoint (&debug_target, pid); |
c906108c | 4249 | |
96baa820 | 4250 | fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n", |
c5aa993b | 4251 | pid, retval); |
c906108c SS |
4252 | |
4253 | return retval; | |
4254 | } | |
4255 | ||
c906108c | 4256 | static int |
d796e1d6 TT |
4257 | debug_to_has_exited (struct target_ops *self, |
4258 | int pid, int wait_status, int *exit_status) | |
c906108c | 4259 | { |
c5aa993b | 4260 | int has_exited; |
c906108c | 4261 | |
d796e1d6 TT |
4262 | has_exited = debug_target.to_has_exited (&debug_target, |
4263 | pid, wait_status, exit_status); | |
c906108c | 4264 | |
96baa820 | 4265 | fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n", |
c5aa993b | 4266 | pid, wait_status, *exit_status, has_exited); |
c906108c SS |
4267 | |
4268 | return has_exited; | |
4269 | } | |
4270 | ||
c906108c | 4271 | static int |
da82bd6b | 4272 | debug_to_can_run (struct target_ops *self) |
c906108c SS |
4273 | { |
4274 | int retval; | |
4275 | ||
da82bd6b | 4276 | retval = debug_target.to_can_run (&debug_target); |
c906108c | 4277 | |
96baa820 | 4278 | fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval); |
c906108c SS |
4279 | |
4280 | return retval; | |
4281 | } | |
4282 | ||
c2250ad1 UW |
4283 | static struct gdbarch * |
4284 | debug_to_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
4285 | { | |
4286 | struct gdbarch *retval; | |
4287 | ||
4288 | retval = debug_target.to_thread_architecture (ops, ptid); | |
4289 | ||
3e43a32a MS |
4290 | fprintf_unfiltered (gdb_stdlog, |
4291 | "target_thread_architecture (%s) = %s [%s]\n", | |
4292 | target_pid_to_str (ptid), | |
4293 | host_address_to_string (retval), | |
c2250ad1 UW |
4294 | gdbarch_bfd_arch_info (retval)->printable_name); |
4295 | return retval; | |
4296 | } | |
4297 | ||
c906108c | 4298 | static void |
1eab8a48 | 4299 | debug_to_stop (struct target_ops *self, ptid_t ptid) |
c906108c | 4300 | { |
1eab8a48 | 4301 | debug_target.to_stop (&debug_target, ptid); |
c906108c | 4302 | |
94cc34af PA |
4303 | fprintf_unfiltered (gdb_stdlog, "target_stop (%s)\n", |
4304 | target_pid_to_str (ptid)); | |
c906108c SS |
4305 | } |
4306 | ||
96baa820 | 4307 | static void |
1aac633b | 4308 | debug_to_rcmd (struct target_ops *self, char *command, |
d9fcf2fb | 4309 | struct ui_file *outbuf) |
96baa820 | 4310 | { |
1aac633b | 4311 | debug_target.to_rcmd (&debug_target, command, outbuf); |
96baa820 JM |
4312 | fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command); |
4313 | } | |
4314 | ||
c906108c | 4315 | static char * |
8dd27370 | 4316 | debug_to_pid_to_exec_file (struct target_ops *self, int pid) |
c906108c | 4317 | { |
c5aa993b | 4318 | char *exec_file; |
c906108c | 4319 | |
8dd27370 | 4320 | exec_file = debug_target.to_pid_to_exec_file (&debug_target, pid); |
c906108c | 4321 | |
96baa820 | 4322 | fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n", |
c5aa993b | 4323 | pid, exec_file); |
c906108c SS |
4324 | |
4325 | return exec_file; | |
4326 | } | |
4327 | ||
c906108c | 4328 | static void |
fba45db2 | 4329 | setup_target_debug (void) |
c906108c SS |
4330 | { |
4331 | memcpy (&debug_target, ¤t_target, sizeof debug_target); | |
4332 | ||
4333 | current_target.to_open = debug_to_open; | |
c906108c | 4334 | current_target.to_post_attach = debug_to_post_attach; |
c906108c | 4335 | current_target.to_prepare_to_store = debug_to_prepare_to_store; |
c8e73a31 | 4336 | current_target.deprecated_xfer_memory = deprecated_debug_xfer_memory; |
c906108c SS |
4337 | current_target.to_files_info = debug_to_files_info; |
4338 | current_target.to_insert_breakpoint = debug_to_insert_breakpoint; | |
4339 | current_target.to_remove_breakpoint = debug_to_remove_breakpoint; | |
ccaa32c7 GS |
4340 | current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint; |
4341 | current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint; | |
4342 | current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint; | |
4343 | current_target.to_insert_watchpoint = debug_to_insert_watchpoint; | |
4344 | current_target.to_remove_watchpoint = debug_to_remove_watchpoint; | |
4345 | current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint; | |
4346 | current_target.to_stopped_data_address = debug_to_stopped_data_address; | |
3e43a32a MS |
4347 | current_target.to_watchpoint_addr_within_range |
4348 | = debug_to_watchpoint_addr_within_range; | |
4349 | current_target.to_region_ok_for_hw_watchpoint | |
4350 | = debug_to_region_ok_for_hw_watchpoint; | |
4351 | current_target.to_can_accel_watchpoint_condition | |
4352 | = debug_to_can_accel_watchpoint_condition; | |
c906108c SS |
4353 | current_target.to_terminal_init = debug_to_terminal_init; |
4354 | current_target.to_terminal_inferior = debug_to_terminal_inferior; | |
3e43a32a MS |
4355 | current_target.to_terminal_ours_for_output |
4356 | = debug_to_terminal_ours_for_output; | |
c906108c | 4357 | current_target.to_terminal_ours = debug_to_terminal_ours; |
a790ad35 | 4358 | current_target.to_terminal_save_ours = debug_to_terminal_save_ours; |
c906108c | 4359 | current_target.to_terminal_info = debug_to_terminal_info; |
c906108c | 4360 | current_target.to_load = debug_to_load; |
c906108c | 4361 | current_target.to_post_startup_inferior = debug_to_post_startup_inferior; |
c906108c SS |
4362 | current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint; |
4363 | current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint; | |
4364 | current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint; | |
4365 | current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint; | |
c906108c SS |
4366 | current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint; |
4367 | current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint; | |
c906108c | 4368 | current_target.to_has_exited = debug_to_has_exited; |
c906108c | 4369 | current_target.to_can_run = debug_to_can_run; |
c906108c | 4370 | current_target.to_stop = debug_to_stop; |
96baa820 | 4371 | current_target.to_rcmd = debug_to_rcmd; |
c906108c | 4372 | current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file; |
c2250ad1 | 4373 | current_target.to_thread_architecture = debug_to_thread_architecture; |
c906108c | 4374 | } |
c906108c | 4375 | \f |
c5aa993b JM |
4376 | |
4377 | static char targ_desc[] = | |
3e43a32a MS |
4378 | "Names of targets and files being debugged.\nShows the entire \ |
4379 | stack of targets currently in use (including the exec-file,\n\ | |
c906108c SS |
4380 | core-file, and process, if any), as well as the symbol file name."; |
4381 | ||
a53f3625 TT |
4382 | static void |
4383 | default_rcmd (struct target_ops *self, char *command, struct ui_file *output) | |
4384 | { | |
4385 | error (_("\"monitor\" command not supported by this target.")); | |
4386 | } | |
4387 | ||
96baa820 JM |
4388 | static void |
4389 | do_monitor_command (char *cmd, | |
4390 | int from_tty) | |
4391 | { | |
96baa820 JM |
4392 | target_rcmd (cmd, gdb_stdtarg); |
4393 | } | |
4394 | ||
87680a14 JB |
4395 | /* Print the name of each layers of our target stack. */ |
4396 | ||
4397 | static void | |
4398 | maintenance_print_target_stack (char *cmd, int from_tty) | |
4399 | { | |
4400 | struct target_ops *t; | |
4401 | ||
4402 | printf_filtered (_("The current target stack is:\n")); | |
4403 | ||
4404 | for (t = target_stack; t != NULL; t = t->beneath) | |
4405 | { | |
4406 | printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname); | |
4407 | } | |
4408 | } | |
4409 | ||
c6ebd6cf VP |
4410 | /* Controls if async mode is permitted. */ |
4411 | int target_async_permitted = 0; | |
4412 | ||
4413 | /* The set command writes to this variable. If the inferior is | |
b5419e49 | 4414 | executing, target_async_permitted is *not* updated. */ |
c6ebd6cf VP |
4415 | static int target_async_permitted_1 = 0; |
4416 | ||
4417 | static void | |
9401a810 PA |
4418 | set_target_async_command (char *args, int from_tty, |
4419 | struct cmd_list_element *c) | |
c6ebd6cf | 4420 | { |
c35b1492 | 4421 | if (have_live_inferiors ()) |
c6ebd6cf VP |
4422 | { |
4423 | target_async_permitted_1 = target_async_permitted; | |
4424 | error (_("Cannot change this setting while the inferior is running.")); | |
4425 | } | |
4426 | ||
4427 | target_async_permitted = target_async_permitted_1; | |
4428 | } | |
4429 | ||
4430 | static void | |
9401a810 PA |
4431 | show_target_async_command (struct ui_file *file, int from_tty, |
4432 | struct cmd_list_element *c, | |
4433 | const char *value) | |
c6ebd6cf | 4434 | { |
3e43a32a MS |
4435 | fprintf_filtered (file, |
4436 | _("Controlling the inferior in " | |
4437 | "asynchronous mode is %s.\n"), value); | |
c6ebd6cf VP |
4438 | } |
4439 | ||
d914c394 SS |
4440 | /* Temporary copies of permission settings. */ |
4441 | ||
4442 | static int may_write_registers_1 = 1; | |
4443 | static int may_write_memory_1 = 1; | |
4444 | static int may_insert_breakpoints_1 = 1; | |
4445 | static int may_insert_tracepoints_1 = 1; | |
4446 | static int may_insert_fast_tracepoints_1 = 1; | |
4447 | static int may_stop_1 = 1; | |
4448 | ||
4449 | /* Make the user-set values match the real values again. */ | |
4450 | ||
4451 | void | |
4452 | update_target_permissions (void) | |
4453 | { | |
4454 | may_write_registers_1 = may_write_registers; | |
4455 | may_write_memory_1 = may_write_memory; | |
4456 | may_insert_breakpoints_1 = may_insert_breakpoints; | |
4457 | may_insert_tracepoints_1 = may_insert_tracepoints; | |
4458 | may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints; | |
4459 | may_stop_1 = may_stop; | |
4460 | } | |
4461 | ||
4462 | /* The one function handles (most of) the permission flags in the same | |
4463 | way. */ | |
4464 | ||
4465 | static void | |
4466 | set_target_permissions (char *args, int from_tty, | |
4467 | struct cmd_list_element *c) | |
4468 | { | |
4469 | if (target_has_execution) | |
4470 | { | |
4471 | update_target_permissions (); | |
4472 | error (_("Cannot change this setting while the inferior is running.")); | |
4473 | } | |
4474 | ||
4475 | /* Make the real values match the user-changed values. */ | |
4476 | may_write_registers = may_write_registers_1; | |
4477 | may_insert_breakpoints = may_insert_breakpoints_1; | |
4478 | may_insert_tracepoints = may_insert_tracepoints_1; | |
4479 | may_insert_fast_tracepoints = may_insert_fast_tracepoints_1; | |
4480 | may_stop = may_stop_1; | |
4481 | update_observer_mode (); | |
4482 | } | |
4483 | ||
4484 | /* Set memory write permission independently of observer mode. */ | |
4485 | ||
4486 | static void | |
4487 | set_write_memory_permission (char *args, int from_tty, | |
4488 | struct cmd_list_element *c) | |
4489 | { | |
4490 | /* Make the real values match the user-changed values. */ | |
4491 | may_write_memory = may_write_memory_1; | |
4492 | update_observer_mode (); | |
4493 | } | |
4494 | ||
4495 | ||
c906108c | 4496 | void |
fba45db2 | 4497 | initialize_targets (void) |
c906108c SS |
4498 | { |
4499 | init_dummy_target (); | |
4500 | push_target (&dummy_target); | |
4501 | ||
4502 | add_info ("target", target_info, targ_desc); | |
4503 | add_info ("files", target_info, targ_desc); | |
4504 | ||
ccce17b0 | 4505 | add_setshow_zuinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
85c07804 AC |
4506 | Set target debugging."), _("\ |
4507 | Show target debugging."), _("\ | |
333dabeb DJ |
4508 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
4509 | verbose. Changes do not take effect until the next \"run\" or \"target\"\n\ | |
85c07804 | 4510 | command."), |
ccce17b0 YQ |
4511 | NULL, |
4512 | show_targetdebug, | |
4513 | &setdebuglist, &showdebuglist); | |
3a11626d | 4514 | |
2bc416ba | 4515 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
4516 | &trust_readonly, _("\ |
4517 | Set mode for reading from readonly sections."), _("\ | |
4518 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
4519 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
4520 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 4521 | result in significant performance improvement for remote targets."), |
2c5b56ce | 4522 | NULL, |
920d2a44 | 4523 | show_trust_readonly, |
e707bbc2 | 4524 | &setlist, &showlist); |
96baa820 JM |
4525 | |
4526 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 4527 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 4528 | |
87680a14 JB |
4529 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
4530 | _("Print the name of each layer of the internal target stack."), | |
4531 | &maintenanceprintlist); | |
4532 | ||
c6ebd6cf VP |
4533 | add_setshow_boolean_cmd ("target-async", no_class, |
4534 | &target_async_permitted_1, _("\ | |
4535 | Set whether gdb controls the inferior in asynchronous mode."), _("\ | |
4536 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
4537 | Tells gdb whether to control the inferior in asynchronous mode."), | |
9401a810 PA |
4538 | set_target_async_command, |
4539 | show_target_async_command, | |
c6ebd6cf VP |
4540 | &setlist, |
4541 | &showlist); | |
4542 | ||
d914c394 SS |
4543 | add_setshow_boolean_cmd ("may-write-registers", class_support, |
4544 | &may_write_registers_1, _("\ | |
4545 | Set permission to write into registers."), _("\ | |
4546 | Show permission to write into registers."), _("\ | |
4547 | When this permission is on, GDB may write into the target's registers.\n\ | |
4548 | Otherwise, any sort of write attempt will result in an error."), | |
4549 | set_target_permissions, NULL, | |
4550 | &setlist, &showlist); | |
4551 | ||
4552 | add_setshow_boolean_cmd ("may-write-memory", class_support, | |
4553 | &may_write_memory_1, _("\ | |
4554 | Set permission to write into target memory."), _("\ | |
4555 | Show permission to write into target memory."), _("\ | |
4556 | When this permission is on, GDB may write into the target's memory.\n\ | |
4557 | Otherwise, any sort of write attempt will result in an error."), | |
4558 | set_write_memory_permission, NULL, | |
4559 | &setlist, &showlist); | |
4560 | ||
4561 | add_setshow_boolean_cmd ("may-insert-breakpoints", class_support, | |
4562 | &may_insert_breakpoints_1, _("\ | |
4563 | Set permission to insert breakpoints in the target."), _("\ | |
4564 | Show permission to insert breakpoints in the target."), _("\ | |
4565 | When this permission is on, GDB may insert breakpoints in the program.\n\ | |
4566 | Otherwise, any sort of insertion attempt will result in an error."), | |
4567 | set_target_permissions, NULL, | |
4568 | &setlist, &showlist); | |
4569 | ||
4570 | add_setshow_boolean_cmd ("may-insert-tracepoints", class_support, | |
4571 | &may_insert_tracepoints_1, _("\ | |
4572 | Set permission to insert tracepoints in the target."), _("\ | |
4573 | Show permission to insert tracepoints in the target."), _("\ | |
4574 | When this permission is on, GDB may insert tracepoints in the program.\n\ | |
4575 | Otherwise, any sort of insertion attempt will result in an error."), | |
4576 | set_target_permissions, NULL, | |
4577 | &setlist, &showlist); | |
4578 | ||
4579 | add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support, | |
4580 | &may_insert_fast_tracepoints_1, _("\ | |
4581 | Set permission to insert fast tracepoints in the target."), _("\ | |
4582 | Show permission to insert fast tracepoints in the target."), _("\ | |
4583 | When this permission is on, GDB may insert fast tracepoints.\n\ | |
4584 | Otherwise, any sort of insertion attempt will result in an error."), | |
4585 | set_target_permissions, NULL, | |
4586 | &setlist, &showlist); | |
4587 | ||
4588 | add_setshow_boolean_cmd ("may-interrupt", class_support, | |
4589 | &may_stop_1, _("\ | |
4590 | Set permission to interrupt or signal the target."), _("\ | |
4591 | Show permission to interrupt or signal the target."), _("\ | |
4592 | When this permission is on, GDB may interrupt/stop the target's execution.\n\ | |
4593 | Otherwise, any attempt to interrupt or stop will be ignored."), | |
4594 | set_target_permissions, NULL, | |
4595 | &setlist, &showlist); | |
c906108c | 4596 | } |