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