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" | |
45741a9c | 30 | #include "infrun.h" |
c906108c SS |
31 | #include "bfd.h" |
32 | #include "symfile.h" | |
33 | #include "objfiles.h" | |
4930751a | 34 | #include "dcache.h" |
c906108c | 35 | #include <signal.h> |
4e052eda | 36 | #include "regcache.h" |
0088c768 | 37 | #include "gdb_assert.h" |
b6591e8b | 38 | #include "gdbcore.h" |
9e35dae4 | 39 | #include "exceptions.h" |
424163ea | 40 | #include "target-descriptions.h" |
e1ac3328 | 41 | #include "gdbthread.h" |
b9db4ced | 42 | #include "solib.h" |
07b82ea5 | 43 | #include "exec.h" |
edb3359d | 44 | #include "inline-frame.h" |
2f4d8875 | 45 | #include "tracepoint.h" |
7313baad | 46 | #include "gdb/fileio.h" |
8ffcbaaf | 47 | #include "agent.h" |
8de71aab | 48 | #include "auxv.h" |
c906108c | 49 | |
a14ed312 | 50 | static void target_info (char *, int); |
c906108c | 51 | |
f0f9ff95 TT |
52 | static void generic_tls_error (void) ATTRIBUTE_NORETURN; |
53 | ||
0a4f40a2 | 54 | static void default_terminal_info (struct target_ops *, const char *, int); |
c906108c | 55 | |
5009afc5 AS |
56 | static int default_watchpoint_addr_within_range (struct target_ops *, |
57 | CORE_ADDR, CORE_ADDR, int); | |
58 | ||
31568a15 TT |
59 | static int default_region_ok_for_hw_watchpoint (struct target_ops *, |
60 | CORE_ADDR, int); | |
e0d24f8d | 61 | |
a30bf1f1 | 62 | static void default_rcmd (struct target_ops *, const char *, struct ui_file *); |
a53f3625 | 63 | |
4229b31d TT |
64 | static ptid_t default_get_ada_task_ptid (struct target_ops *self, |
65 | long lwp, long tid); | |
66 | ||
098dba18 TT |
67 | static int default_follow_fork (struct target_ops *self, int follow_child, |
68 | int detach_fork); | |
69 | ||
8d657035 TT |
70 | static void default_mourn_inferior (struct target_ops *self); |
71 | ||
58a5184e TT |
72 | static int default_search_memory (struct target_ops *ops, |
73 | CORE_ADDR start_addr, | |
74 | ULONGEST search_space_len, | |
75 | const gdb_byte *pattern, | |
76 | ULONGEST pattern_len, | |
77 | CORE_ADDR *found_addrp); | |
78 | ||
936d2992 PA |
79 | static int default_verify_memory (struct target_ops *self, |
80 | const gdb_byte *data, | |
81 | CORE_ADDR memaddr, ULONGEST size); | |
82 | ||
8eaff7cd TT |
83 | static struct address_space *default_thread_address_space |
84 | (struct target_ops *self, ptid_t ptid); | |
85 | ||
c25c4a8b | 86 | static void tcomplain (void) ATTRIBUTE_NORETURN; |
c906108c | 87 | |
555bbdeb TT |
88 | static int return_zero (struct target_ops *); |
89 | ||
90 | static int return_zero_has_execution (struct target_ops *, ptid_t); | |
c906108c | 91 | |
a14ed312 | 92 | static void target_command (char *, int); |
c906108c | 93 | |
a14ed312 | 94 | static struct target_ops *find_default_run_target (char *); |
c906108c | 95 | |
c2250ad1 UW |
96 | static struct gdbarch *default_thread_architecture (struct target_ops *ops, |
97 | ptid_t ptid); | |
98 | ||
0b5a2719 TT |
99 | static int dummy_find_memory_regions (struct target_ops *self, |
100 | find_memory_region_ftype ignore1, | |
101 | void *ignore2); | |
102 | ||
16f796b1 TT |
103 | static char *dummy_make_corefile_notes (struct target_ops *self, |
104 | bfd *ignore1, int *ignore2); | |
105 | ||
770234d3 TT |
106 | static char *default_pid_to_str (struct target_ops *ops, ptid_t ptid); |
107 | ||
fe31bf5b TT |
108 | static enum exec_direction_kind default_execution_direction |
109 | (struct target_ops *self); | |
110 | ||
c0eca49f TT |
111 | static CORE_ADDR default_target_decr_pc_after_break (struct target_ops *ops, |
112 | struct gdbarch *gdbarch); | |
113 | ||
1101cb7b TT |
114 | #include "target-delegates.c" |
115 | ||
a14ed312 | 116 | static void init_dummy_target (void); |
c906108c | 117 | |
aa869812 AC |
118 | static struct target_ops debug_target; |
119 | ||
a14ed312 | 120 | static void debug_to_open (char *, int); |
c906108c | 121 | |
f32dbf8c MM |
122 | static void debug_to_prepare_to_store (struct target_ops *self, |
123 | struct regcache *); | |
c906108c | 124 | |
a14ed312 | 125 | static void debug_to_files_info (struct target_ops *); |
c906108c | 126 | |
3db08215 | 127 | static int debug_to_insert_breakpoint (struct target_ops *, struct gdbarch *, |
a6d9a66e | 128 | struct bp_target_info *); |
c906108c | 129 | |
3db08215 | 130 | static int debug_to_remove_breakpoint (struct target_ops *, struct gdbarch *, |
a6d9a66e | 131 | struct bp_target_info *); |
c906108c | 132 | |
5461485a TT |
133 | static int debug_to_can_use_hw_breakpoint (struct target_ops *self, |
134 | int, int, int); | |
ccaa32c7 | 135 | |
23a26771 TT |
136 | static int debug_to_insert_hw_breakpoint (struct target_ops *self, |
137 | struct gdbarch *, | |
a6d9a66e | 138 | struct bp_target_info *); |
ccaa32c7 | 139 | |
a64dc96c TT |
140 | static int debug_to_remove_hw_breakpoint (struct target_ops *self, |
141 | struct gdbarch *, | |
a6d9a66e | 142 | struct bp_target_info *); |
ccaa32c7 | 143 | |
7bb99c53 TT |
144 | static int debug_to_insert_watchpoint (struct target_ops *self, |
145 | CORE_ADDR, int, int, | |
0cf6dd15 | 146 | struct expression *); |
ccaa32c7 | 147 | |
11b5219a TT |
148 | static int debug_to_remove_watchpoint (struct target_ops *self, |
149 | CORE_ADDR, int, int, | |
0cf6dd15 | 150 | struct expression *); |
ccaa32c7 | 151 | |
4aa7a7f5 | 152 | static int debug_to_stopped_data_address (struct target_ops *, CORE_ADDR *); |
ccaa32c7 | 153 | |
5009afc5 AS |
154 | static int debug_to_watchpoint_addr_within_range (struct target_ops *, |
155 | CORE_ADDR, CORE_ADDR, int); | |
156 | ||
31568a15 TT |
157 | static int debug_to_region_ok_for_hw_watchpoint (struct target_ops *self, |
158 | CORE_ADDR, int); | |
e0d24f8d | 159 | |
c3a5ff89 TT |
160 | static int debug_to_can_accel_watchpoint_condition (struct target_ops *self, |
161 | CORE_ADDR, int, int, | |
0cf6dd15 TJB |
162 | struct expression *); |
163 | ||
c42bf286 | 164 | static void debug_to_terminal_init (struct target_ops *self); |
c906108c | 165 | |
d2f640d4 | 166 | static void debug_to_terminal_inferior (struct target_ops *self); |
c906108c | 167 | |
2e1e1a19 | 168 | static void debug_to_terminal_ours_for_output (struct target_ops *self); |
c906108c | 169 | |
ae3bd431 | 170 | static void debug_to_terminal_save_ours (struct target_ops *self); |
a790ad35 | 171 | |
e3594fd1 | 172 | static void debug_to_terminal_ours (struct target_ops *self); |
c906108c | 173 | |
9cbe5fff | 174 | static void debug_to_load (struct target_ops *self, const char *, int); |
c906108c | 175 | |
da82bd6b | 176 | static int debug_to_can_run (struct target_ops *self); |
c906108c | 177 | |
1eab8a48 | 178 | static void debug_to_stop (struct target_ops *self, ptid_t); |
c906108c | 179 | |
c906108c | 180 | /* Pointer to array of target architecture structures; the size of the |
2bc416ba | 181 | array; the current index into the array; the allocated size of the |
c906108c SS |
182 | array. */ |
183 | struct target_ops **target_structs; | |
184 | unsigned target_struct_size; | |
c906108c SS |
185 | unsigned target_struct_allocsize; |
186 | #define DEFAULT_ALLOCSIZE 10 | |
187 | ||
188 | /* The initial current target, so that there is always a semi-valid | |
189 | current target. */ | |
190 | ||
191 | static struct target_ops dummy_target; | |
192 | ||
193 | /* Top of target stack. */ | |
194 | ||
258b763a | 195 | static struct target_ops *target_stack; |
c906108c SS |
196 | |
197 | /* The target structure we are currently using to talk to a process | |
198 | or file or whatever "inferior" we have. */ | |
199 | ||
200 | struct target_ops current_target; | |
201 | ||
202 | /* Command list for target. */ | |
203 | ||
204 | static struct cmd_list_element *targetlist = NULL; | |
205 | ||
cf7a04e8 DJ |
206 | /* Nonzero if we should trust readonly sections from the |
207 | executable when reading memory. */ | |
208 | ||
209 | static int trust_readonly = 0; | |
210 | ||
8defab1a DJ |
211 | /* Nonzero if we should show true memory content including |
212 | memory breakpoint inserted by gdb. */ | |
213 | ||
214 | static int show_memory_breakpoints = 0; | |
215 | ||
d914c394 SS |
216 | /* These globals control whether GDB attempts to perform these |
217 | operations; they are useful for targets that need to prevent | |
218 | inadvertant disruption, such as in non-stop mode. */ | |
219 | ||
220 | int may_write_registers = 1; | |
221 | ||
222 | int may_write_memory = 1; | |
223 | ||
224 | int may_insert_breakpoints = 1; | |
225 | ||
226 | int may_insert_tracepoints = 1; | |
227 | ||
228 | int may_insert_fast_tracepoints = 1; | |
229 | ||
230 | int may_stop = 1; | |
231 | ||
c906108c SS |
232 | /* Non-zero if we want to see trace of target level stuff. */ |
233 | ||
ccce17b0 | 234 | static unsigned int targetdebug = 0; |
920d2a44 AC |
235 | static void |
236 | show_targetdebug (struct ui_file *file, int from_tty, | |
237 | struct cmd_list_element *c, const char *value) | |
238 | { | |
239 | fprintf_filtered (file, _("Target debugging is %s.\n"), value); | |
240 | } | |
c906108c | 241 | |
a14ed312 | 242 | static void setup_target_debug (void); |
c906108c | 243 | |
c906108c SS |
244 | /* The user just typed 'target' without the name of a target. */ |
245 | ||
c906108c | 246 | static void |
fba45db2 | 247 | target_command (char *arg, int from_tty) |
c906108c SS |
248 | { |
249 | fputs_filtered ("Argument required (target name). Try `help target'\n", | |
250 | gdb_stdout); | |
251 | } | |
252 | ||
c35b1492 PA |
253 | /* Default target_has_* methods for process_stratum targets. */ |
254 | ||
255 | int | |
256 | default_child_has_all_memory (struct target_ops *ops) | |
257 | { | |
258 | /* If no inferior selected, then we can't read memory here. */ | |
259 | if (ptid_equal (inferior_ptid, null_ptid)) | |
260 | return 0; | |
261 | ||
262 | return 1; | |
263 | } | |
264 | ||
265 | int | |
266 | default_child_has_memory (struct target_ops *ops) | |
267 | { | |
268 | /* If no inferior selected, then we can't read memory here. */ | |
269 | if (ptid_equal (inferior_ptid, null_ptid)) | |
270 | return 0; | |
271 | ||
272 | return 1; | |
273 | } | |
274 | ||
275 | int | |
276 | default_child_has_stack (struct target_ops *ops) | |
277 | { | |
278 | /* If no inferior selected, there's no stack. */ | |
279 | if (ptid_equal (inferior_ptid, null_ptid)) | |
280 | return 0; | |
281 | ||
282 | return 1; | |
283 | } | |
284 | ||
285 | int | |
286 | default_child_has_registers (struct target_ops *ops) | |
287 | { | |
288 | /* Can't read registers from no inferior. */ | |
289 | if (ptid_equal (inferior_ptid, null_ptid)) | |
290 | return 0; | |
291 | ||
292 | return 1; | |
293 | } | |
294 | ||
295 | int | |
aeaec162 | 296 | default_child_has_execution (struct target_ops *ops, ptid_t the_ptid) |
c35b1492 PA |
297 | { |
298 | /* If there's no thread selected, then we can't make it run through | |
299 | hoops. */ | |
aeaec162 | 300 | if (ptid_equal (the_ptid, null_ptid)) |
c35b1492 PA |
301 | return 0; |
302 | ||
303 | return 1; | |
304 | } | |
305 | ||
306 | ||
307 | int | |
308 | target_has_all_memory_1 (void) | |
309 | { | |
310 | struct target_ops *t; | |
311 | ||
312 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
313 | if (t->to_has_all_memory (t)) | |
314 | return 1; | |
315 | ||
316 | return 0; | |
317 | } | |
318 | ||
319 | int | |
320 | target_has_memory_1 (void) | |
321 | { | |
322 | struct target_ops *t; | |
323 | ||
324 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
325 | if (t->to_has_memory (t)) | |
326 | return 1; | |
327 | ||
328 | return 0; | |
329 | } | |
330 | ||
331 | int | |
332 | target_has_stack_1 (void) | |
333 | { | |
334 | struct target_ops *t; | |
335 | ||
336 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
337 | if (t->to_has_stack (t)) | |
338 | return 1; | |
339 | ||
340 | return 0; | |
341 | } | |
342 | ||
343 | int | |
344 | target_has_registers_1 (void) | |
345 | { | |
346 | struct target_ops *t; | |
347 | ||
348 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
349 | if (t->to_has_registers (t)) | |
350 | return 1; | |
351 | ||
352 | return 0; | |
353 | } | |
354 | ||
355 | int | |
aeaec162 | 356 | target_has_execution_1 (ptid_t the_ptid) |
c35b1492 PA |
357 | { |
358 | struct target_ops *t; | |
359 | ||
360 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
aeaec162 | 361 | if (t->to_has_execution (t, the_ptid)) |
c35b1492 PA |
362 | return 1; |
363 | ||
364 | return 0; | |
365 | } | |
366 | ||
aeaec162 TT |
367 | int |
368 | target_has_execution_current (void) | |
369 | { | |
370 | return target_has_execution_1 (inferior_ptid); | |
371 | } | |
372 | ||
c22a2b88 TT |
373 | /* Complete initialization of T. This ensures that various fields in |
374 | T are set, if needed by the target implementation. */ | |
c906108c SS |
375 | |
376 | void | |
c22a2b88 | 377 | complete_target_initialization (struct target_ops *t) |
c906108c | 378 | { |
0088c768 | 379 | /* Provide default values for all "must have" methods. */ |
0088c768 | 380 | |
c35b1492 | 381 | if (t->to_has_all_memory == NULL) |
555bbdeb | 382 | t->to_has_all_memory = return_zero; |
c35b1492 PA |
383 | |
384 | if (t->to_has_memory == NULL) | |
555bbdeb | 385 | t->to_has_memory = return_zero; |
c35b1492 PA |
386 | |
387 | if (t->to_has_stack == NULL) | |
555bbdeb | 388 | t->to_has_stack = return_zero; |
c35b1492 PA |
389 | |
390 | if (t->to_has_registers == NULL) | |
555bbdeb | 391 | t->to_has_registers = return_zero; |
c35b1492 PA |
392 | |
393 | if (t->to_has_execution == NULL) | |
555bbdeb | 394 | t->to_has_execution = return_zero_has_execution; |
1101cb7b | 395 | |
b3ccfe11 TT |
396 | /* These methods can be called on an unpushed target and so require |
397 | a default implementation if the target might plausibly be the | |
398 | default run target. */ | |
399 | gdb_assert (t->to_can_run == NULL || (t->to_can_async_p != NULL | |
400 | && t->to_supports_non_stop != NULL)); | |
401 | ||
1101cb7b | 402 | install_delegators (t); |
c22a2b88 TT |
403 | } |
404 | ||
405 | /* Add possible target architecture T to the list and add a new | |
406 | command 'target T->to_shortname'. Set COMPLETER as the command's | |
407 | completer if not NULL. */ | |
408 | ||
409 | void | |
410 | add_target_with_completer (struct target_ops *t, | |
411 | completer_ftype *completer) | |
412 | { | |
413 | struct cmd_list_element *c; | |
414 | ||
415 | complete_target_initialization (t); | |
c35b1492 | 416 | |
c906108c SS |
417 | if (!target_structs) |
418 | { | |
419 | target_struct_allocsize = DEFAULT_ALLOCSIZE; | |
420 | target_structs = (struct target_ops **) xmalloc | |
421 | (target_struct_allocsize * sizeof (*target_structs)); | |
422 | } | |
423 | if (target_struct_size >= target_struct_allocsize) | |
424 | { | |
425 | target_struct_allocsize *= 2; | |
426 | target_structs = (struct target_ops **) | |
c5aa993b JM |
427 | xrealloc ((char *) target_structs, |
428 | target_struct_allocsize * sizeof (*target_structs)); | |
c906108c SS |
429 | } |
430 | target_structs[target_struct_size++] = t; | |
c906108c SS |
431 | |
432 | if (targetlist == NULL) | |
1bedd215 AC |
433 | add_prefix_cmd ("target", class_run, target_command, _("\ |
434 | Connect to a target machine or process.\n\ | |
c906108c SS |
435 | The first argument is the type or protocol of the target machine.\n\ |
436 | Remaining arguments are interpreted by the target protocol. For more\n\ | |
437 | information on the arguments for a particular protocol, type\n\ | |
1bedd215 | 438 | `help target ' followed by the protocol name."), |
c906108c | 439 | &targetlist, "target ", 0, &cmdlist); |
9852c492 YQ |
440 | c = add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc, |
441 | &targetlist); | |
442 | if (completer != NULL) | |
443 | set_cmd_completer (c, completer); | |
444 | } | |
445 | ||
446 | /* Add a possible target architecture to the list. */ | |
447 | ||
448 | void | |
449 | add_target (struct target_ops *t) | |
450 | { | |
451 | add_target_with_completer (t, NULL); | |
c906108c SS |
452 | } |
453 | ||
b48d48eb MM |
454 | /* See target.h. */ |
455 | ||
456 | void | |
457 | add_deprecated_target_alias (struct target_ops *t, char *alias) | |
458 | { | |
459 | struct cmd_list_element *c; | |
460 | char *alt; | |
461 | ||
462 | /* If we use add_alias_cmd, here, we do not get the deprecated warning, | |
463 | see PR cli/15104. */ | |
464 | c = add_cmd (alias, no_class, t->to_open, t->to_doc, &targetlist); | |
465 | alt = xstrprintf ("target %s", t->to_shortname); | |
466 | deprecate_cmd (c, alt); | |
467 | } | |
468 | ||
c906108c SS |
469 | /* Stub functions */ |
470 | ||
7d85a9c0 JB |
471 | void |
472 | target_kill (void) | |
473 | { | |
423a4807 TT |
474 | if (targetdebug) |
475 | fprintf_unfiltered (gdb_stdlog, "target_kill ()\n"); | |
7d85a9c0 | 476 | |
423a4807 | 477 | current_target.to_kill (¤t_target); |
7d85a9c0 JB |
478 | } |
479 | ||
11cf8741 | 480 | void |
9cbe5fff | 481 | target_load (const char *arg, int from_tty) |
11cf8741 | 482 | { |
4e5d721f | 483 | target_dcache_invalidate (); |
71a9f134 | 484 | (*current_target.to_load) (¤t_target, arg, from_tty); |
11cf8741 JM |
485 | } |
486 | ||
d9d2d8b6 PA |
487 | void |
488 | target_terminal_inferior (void) | |
489 | { | |
490 | /* A background resume (``run&'') should leave GDB in control of the | |
c378eb4e | 491 | terminal. Use target_can_async_p, not target_is_async_p, since at |
ba7f6c64 VP |
492 | this point the target is not async yet. However, if sync_execution |
493 | is not set, we know it will become async prior to resume. */ | |
494 | if (target_can_async_p () && !sync_execution) | |
d9d2d8b6 PA |
495 | return; |
496 | ||
497 | /* If GDB is resuming the inferior in the foreground, install | |
498 | inferior's terminal modes. */ | |
d2f640d4 | 499 | (*current_target.to_terminal_inferior) (¤t_target); |
d9d2d8b6 | 500 | } |
136d6dae | 501 | |
b0ed115f TT |
502 | /* See target.h. */ |
503 | ||
504 | int | |
505 | target_supports_terminal_ours (void) | |
506 | { | |
507 | struct target_ops *t; | |
508 | ||
509 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
510 | { | |
511 | if (t->to_terminal_ours != delegate_terminal_ours | |
512 | && t->to_terminal_ours != tdefault_terminal_ours) | |
513 | return 1; | |
514 | } | |
515 | ||
516 | return 0; | |
517 | } | |
518 | ||
c906108c | 519 | static void |
fba45db2 | 520 | tcomplain (void) |
c906108c | 521 | { |
8a3fe4f8 | 522 | error (_("You can't do that when your target is `%s'"), |
c906108c SS |
523 | current_target.to_shortname); |
524 | } | |
525 | ||
526 | void | |
fba45db2 | 527 | noprocess (void) |
c906108c | 528 | { |
8a3fe4f8 | 529 | error (_("You can't do that without a process to debug.")); |
c906108c SS |
530 | } |
531 | ||
c906108c | 532 | static void |
0a4f40a2 | 533 | default_terminal_info (struct target_ops *self, const char *args, int from_tty) |
c906108c | 534 | { |
a3f17187 | 535 | printf_unfiltered (_("No saved terminal information.\n")); |
c906108c SS |
536 | } |
537 | ||
0ef643c8 JB |
538 | /* A default implementation for the to_get_ada_task_ptid target method. |
539 | ||
540 | This function builds the PTID by using both LWP and TID as part of | |
541 | the PTID lwp and tid elements. The pid used is the pid of the | |
542 | inferior_ptid. */ | |
543 | ||
2c0b251b | 544 | static ptid_t |
1e6b91a4 | 545 | default_get_ada_task_ptid (struct target_ops *self, long lwp, long tid) |
0ef643c8 JB |
546 | { |
547 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid); | |
548 | } | |
549 | ||
32231432 | 550 | static enum exec_direction_kind |
4c612759 | 551 | default_execution_direction (struct target_ops *self) |
32231432 PA |
552 | { |
553 | if (!target_can_execute_reverse) | |
554 | return EXEC_FORWARD; | |
555 | else if (!target_can_async_p ()) | |
556 | return EXEC_FORWARD; | |
557 | else | |
558 | gdb_assert_not_reached ("\ | |
559 | to_execution_direction must be implemented for reverse async"); | |
560 | } | |
561 | ||
7998dfc3 AC |
562 | /* Go through the target stack from top to bottom, copying over zero |
563 | entries in current_target, then filling in still empty entries. In | |
564 | effect, we are doing class inheritance through the pushed target | |
565 | vectors. | |
566 | ||
567 | NOTE: cagney/2003-10-17: The problem with this inheritance, as it | |
568 | is currently implemented, is that it discards any knowledge of | |
569 | which target an inherited method originally belonged to. | |
570 | Consequently, new new target methods should instead explicitly and | |
571 | locally search the target stack for the target that can handle the | |
572 | request. */ | |
c906108c SS |
573 | |
574 | static void | |
7998dfc3 | 575 | update_current_target (void) |
c906108c | 576 | { |
7998dfc3 AC |
577 | struct target_ops *t; |
578 | ||
08d8bcd7 | 579 | /* First, reset current's contents. */ |
7998dfc3 AC |
580 | memset (¤t_target, 0, sizeof (current_target)); |
581 | ||
1101cb7b TT |
582 | /* Install the delegators. */ |
583 | install_delegators (¤t_target); | |
584 | ||
be4ddd36 TT |
585 | current_target.to_stratum = target_stack->to_stratum; |
586 | ||
7998dfc3 AC |
587 | #define INHERIT(FIELD, TARGET) \ |
588 | if (!current_target.FIELD) \ | |
589 | current_target.FIELD = (TARGET)->FIELD | |
590 | ||
be4ddd36 TT |
591 | /* Do not add any new INHERITs here. Instead, use the delegation |
592 | mechanism provided by make-target-delegates. */ | |
7998dfc3 AC |
593 | for (t = target_stack; t; t = t->beneath) |
594 | { | |
595 | INHERIT (to_shortname, t); | |
596 | INHERIT (to_longname, t); | |
dc177b7a | 597 | INHERIT (to_attach_no_wait, t); |
74174d2e | 598 | INHERIT (to_have_steppable_watchpoint, t); |
7998dfc3 | 599 | INHERIT (to_have_continuable_watchpoint, t); |
7998dfc3 | 600 | INHERIT (to_has_thread_control, t); |
7998dfc3 AC |
601 | } |
602 | #undef INHERIT | |
603 | ||
7998dfc3 AC |
604 | /* Finally, position the target-stack beneath the squashed |
605 | "current_target". That way code looking for a non-inherited | |
606 | target method can quickly and simply find it. */ | |
607 | current_target.beneath = target_stack; | |
b4b61fdb DJ |
608 | |
609 | if (targetdebug) | |
610 | setup_target_debug (); | |
c906108c SS |
611 | } |
612 | ||
613 | /* Push a new target type into the stack of the existing target accessors, | |
614 | possibly superseding some of the existing accessors. | |
615 | ||
c906108c SS |
616 | Rather than allow an empty stack, we always have the dummy target at |
617 | the bottom stratum, so we can call the function vectors without | |
618 | checking them. */ | |
619 | ||
b26a4dcb | 620 | void |
fba45db2 | 621 | push_target (struct target_ops *t) |
c906108c | 622 | { |
258b763a | 623 | struct target_ops **cur; |
c906108c SS |
624 | |
625 | /* Check magic number. If wrong, it probably means someone changed | |
626 | the struct definition, but not all the places that initialize one. */ | |
627 | if (t->to_magic != OPS_MAGIC) | |
628 | { | |
c5aa993b JM |
629 | fprintf_unfiltered (gdb_stderr, |
630 | "Magic number of %s target struct wrong\n", | |
631 | t->to_shortname); | |
3e43a32a MS |
632 | internal_error (__FILE__, __LINE__, |
633 | _("failed internal consistency check")); | |
c906108c SS |
634 | } |
635 | ||
258b763a AC |
636 | /* Find the proper stratum to install this target in. */ |
637 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
c906108c | 638 | { |
258b763a | 639 | if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum) |
c906108c SS |
640 | break; |
641 | } | |
642 | ||
258b763a | 643 | /* If there's already targets at this stratum, remove them. */ |
88c231eb | 644 | /* FIXME: cagney/2003-10-15: I think this should be popping all |
258b763a AC |
645 | targets to CUR, and not just those at this stratum level. */ |
646 | while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum) | |
647 | { | |
648 | /* There's already something at this stratum level. Close it, | |
649 | and un-hook it from the stack. */ | |
650 | struct target_ops *tmp = (*cur); | |
5d502164 | 651 | |
258b763a AC |
652 | (*cur) = (*cur)->beneath; |
653 | tmp->beneath = NULL; | |
460014f5 | 654 | target_close (tmp); |
258b763a | 655 | } |
c906108c SS |
656 | |
657 | /* We have removed all targets in our stratum, now add the new one. */ | |
258b763a AC |
658 | t->beneath = (*cur); |
659 | (*cur) = t; | |
c906108c SS |
660 | |
661 | update_current_target (); | |
c906108c SS |
662 | } |
663 | ||
2bc416ba | 664 | /* Remove a target_ops vector from the stack, wherever it may be. |
c906108c SS |
665 | Return how many times it was removed (0 or 1). */ |
666 | ||
667 | int | |
fba45db2 | 668 | unpush_target (struct target_ops *t) |
c906108c | 669 | { |
258b763a AC |
670 | struct target_ops **cur; |
671 | struct target_ops *tmp; | |
c906108c | 672 | |
c8d104ad PA |
673 | if (t->to_stratum == dummy_stratum) |
674 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 675 | _("Attempt to unpush the dummy target")); |
c8d104ad | 676 | |
c906108c | 677 | /* Look for the specified target. Note that we assume that a target |
c378eb4e | 678 | can only occur once in the target stack. */ |
c906108c | 679 | |
258b763a AC |
680 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) |
681 | { | |
682 | if ((*cur) == t) | |
683 | break; | |
684 | } | |
c906108c | 685 | |
305436e0 PA |
686 | /* If we don't find target_ops, quit. Only open targets should be |
687 | closed. */ | |
258b763a | 688 | if ((*cur) == NULL) |
305436e0 | 689 | return 0; |
5269965e | 690 | |
c378eb4e | 691 | /* Unchain the target. */ |
258b763a AC |
692 | tmp = (*cur); |
693 | (*cur) = (*cur)->beneath; | |
694 | tmp->beneath = NULL; | |
c906108c SS |
695 | |
696 | update_current_target (); | |
c906108c | 697 | |
305436e0 PA |
698 | /* Finally close the target. Note we do this after unchaining, so |
699 | any target method calls from within the target_close | |
700 | implementation don't end up in T anymore. */ | |
460014f5 | 701 | target_close (t); |
305436e0 | 702 | |
c906108c SS |
703 | return 1; |
704 | } | |
705 | ||
aa76d38d | 706 | void |
460014f5 | 707 | pop_all_targets_above (enum strata above_stratum) |
aa76d38d | 708 | { |
87ab71f0 | 709 | while ((int) (current_target.to_stratum) > (int) above_stratum) |
aa76d38d | 710 | { |
aa76d38d PA |
711 | if (!unpush_target (target_stack)) |
712 | { | |
713 | fprintf_unfiltered (gdb_stderr, | |
714 | "pop_all_targets couldn't find target %s\n", | |
b52323fa | 715 | target_stack->to_shortname); |
aa76d38d PA |
716 | internal_error (__FILE__, __LINE__, |
717 | _("failed internal consistency check")); | |
718 | break; | |
719 | } | |
720 | } | |
721 | } | |
722 | ||
87ab71f0 | 723 | void |
460014f5 | 724 | pop_all_targets (void) |
87ab71f0 | 725 | { |
460014f5 | 726 | pop_all_targets_above (dummy_stratum); |
87ab71f0 PA |
727 | } |
728 | ||
c0edd9ed JK |
729 | /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */ |
730 | ||
731 | int | |
732 | target_is_pushed (struct target_ops *t) | |
733 | { | |
734 | struct target_ops **cur; | |
735 | ||
736 | /* Check magic number. If wrong, it probably means someone changed | |
737 | the struct definition, but not all the places that initialize one. */ | |
738 | if (t->to_magic != OPS_MAGIC) | |
739 | { | |
740 | fprintf_unfiltered (gdb_stderr, | |
741 | "Magic number of %s target struct wrong\n", | |
742 | t->to_shortname); | |
3e43a32a MS |
743 | internal_error (__FILE__, __LINE__, |
744 | _("failed internal consistency check")); | |
c0edd9ed JK |
745 | } |
746 | ||
747 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
748 | if (*cur == t) | |
749 | return 1; | |
750 | ||
751 | return 0; | |
752 | } | |
753 | ||
f0f9ff95 TT |
754 | /* Default implementation of to_get_thread_local_address. */ |
755 | ||
756 | static void | |
757 | generic_tls_error (void) | |
758 | { | |
759 | throw_error (TLS_GENERIC_ERROR, | |
760 | _("Cannot find thread-local variables on this target")); | |
761 | } | |
762 | ||
72f5cf0e | 763 | /* Using the objfile specified in OBJFILE, find the address for the |
9e35dae4 DJ |
764 | current thread's thread-local storage with offset OFFSET. */ |
765 | CORE_ADDR | |
766 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) | |
767 | { | |
768 | volatile CORE_ADDR addr = 0; | |
f0f9ff95 | 769 | struct target_ops *target = ¤t_target; |
9e35dae4 | 770 | |
f0f9ff95 | 771 | if (gdbarch_fetch_tls_load_module_address_p (target_gdbarch ())) |
9e35dae4 DJ |
772 | { |
773 | ptid_t ptid = inferior_ptid; | |
774 | volatile struct gdb_exception ex; | |
775 | ||
776 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
777 | { | |
778 | CORE_ADDR lm_addr; | |
779 | ||
780 | /* Fetch the load module address for this objfile. */ | |
f5656ead | 781 | lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch (), |
9e35dae4 | 782 | objfile); |
9e35dae4 | 783 | |
3e43a32a MS |
784 | addr = target->to_get_thread_local_address (target, ptid, |
785 | lm_addr, offset); | |
9e35dae4 DJ |
786 | } |
787 | /* If an error occurred, print TLS related messages here. Otherwise, | |
788 | throw the error to some higher catcher. */ | |
789 | if (ex.reason < 0) | |
790 | { | |
791 | int objfile_is_library = (objfile->flags & OBJF_SHARED); | |
792 | ||
793 | switch (ex.error) | |
794 | { | |
795 | case TLS_NO_LIBRARY_SUPPORT_ERROR: | |
3e43a32a MS |
796 | error (_("Cannot find thread-local variables " |
797 | "in this thread library.")); | |
9e35dae4 DJ |
798 | break; |
799 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: | |
800 | if (objfile_is_library) | |
801 | error (_("Cannot find shared library `%s' in dynamic" | |
4262abfb | 802 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
803 | else |
804 | error (_("Cannot find executable file `%s' in dynamic" | |
4262abfb | 805 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
806 | break; |
807 | case TLS_NOT_ALLOCATED_YET_ERROR: | |
808 | if (objfile_is_library) | |
809 | error (_("The inferior has not yet allocated storage for" | |
810 | " thread-local variables in\n" | |
811 | "the shared library `%s'\n" | |
812 | "for %s"), | |
4262abfb | 813 | objfile_name (objfile), target_pid_to_str (ptid)); |
9e35dae4 DJ |
814 | else |
815 | error (_("The inferior has not yet allocated storage for" | |
816 | " thread-local variables in\n" | |
817 | "the executable `%s'\n" | |
818 | "for %s"), | |
4262abfb | 819 | objfile_name (objfile), target_pid_to_str (ptid)); |
9e35dae4 DJ |
820 | break; |
821 | case TLS_GENERIC_ERROR: | |
822 | if (objfile_is_library) | |
823 | error (_("Cannot find thread-local storage for %s, " | |
824 | "shared library %s:\n%s"), | |
825 | target_pid_to_str (ptid), | |
4262abfb | 826 | objfile_name (objfile), ex.message); |
9e35dae4 DJ |
827 | else |
828 | error (_("Cannot find thread-local storage for %s, " | |
829 | "executable file %s:\n%s"), | |
830 | target_pid_to_str (ptid), | |
4262abfb | 831 | objfile_name (objfile), ex.message); |
9e35dae4 DJ |
832 | break; |
833 | default: | |
834 | throw_exception (ex); | |
835 | break; | |
836 | } | |
837 | } | |
838 | } | |
839 | /* It wouldn't be wrong here to try a gdbarch method, too; finding | |
840 | TLS is an ABI-specific thing. But we don't do that yet. */ | |
841 | else | |
842 | error (_("Cannot find thread-local variables on this target")); | |
843 | ||
844 | return addr; | |
845 | } | |
846 | ||
6be7b56e | 847 | const char * |
01cb8804 | 848 | target_xfer_status_to_string (enum target_xfer_status status) |
6be7b56e PA |
849 | { |
850 | #define CASE(X) case X: return #X | |
01cb8804 | 851 | switch (status) |
6be7b56e PA |
852 | { |
853 | CASE(TARGET_XFER_E_IO); | |
bc113b4e | 854 | CASE(TARGET_XFER_UNAVAILABLE); |
6be7b56e PA |
855 | default: |
856 | return "<unknown>"; | |
857 | } | |
858 | #undef CASE | |
859 | }; | |
860 | ||
861 | ||
c906108c SS |
862 | #undef MIN |
863 | #define MIN(A, B) (((A) <= (B)) ? (A) : (B)) | |
864 | ||
865 | /* target_read_string -- read a null terminated string, up to LEN bytes, | |
866 | from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful. | |
867 | Set *STRING to a pointer to malloc'd memory containing the data; the caller | |
868 | is responsible for freeing it. Return the number of bytes successfully | |
869 | read. */ | |
870 | ||
871 | int | |
fba45db2 | 872 | target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop) |
c906108c | 873 | { |
c2e8b827 | 874 | int tlen, offset, i; |
1b0ba102 | 875 | gdb_byte buf[4]; |
c906108c SS |
876 | int errcode = 0; |
877 | char *buffer; | |
878 | int buffer_allocated; | |
879 | char *bufptr; | |
880 | unsigned int nbytes_read = 0; | |
881 | ||
6217bf3e MS |
882 | gdb_assert (string); |
883 | ||
c906108c SS |
884 | /* Small for testing. */ |
885 | buffer_allocated = 4; | |
886 | buffer = xmalloc (buffer_allocated); | |
887 | bufptr = buffer; | |
888 | ||
c906108c SS |
889 | while (len > 0) |
890 | { | |
891 | tlen = MIN (len, 4 - (memaddr & 3)); | |
892 | offset = memaddr & 3; | |
893 | ||
1b0ba102 | 894 | errcode = target_read_memory (memaddr & ~3, buf, sizeof buf); |
c906108c SS |
895 | if (errcode != 0) |
896 | { | |
897 | /* The transfer request might have crossed the boundary to an | |
c378eb4e | 898 | unallocated region of memory. Retry the transfer, requesting |
c906108c SS |
899 | a single byte. */ |
900 | tlen = 1; | |
901 | offset = 0; | |
b8eb5af0 | 902 | errcode = target_read_memory (memaddr, buf, 1); |
c906108c SS |
903 | if (errcode != 0) |
904 | goto done; | |
905 | } | |
906 | ||
907 | if (bufptr - buffer + tlen > buffer_allocated) | |
908 | { | |
909 | unsigned int bytes; | |
5d502164 | 910 | |
c906108c SS |
911 | bytes = bufptr - buffer; |
912 | buffer_allocated *= 2; | |
913 | buffer = xrealloc (buffer, buffer_allocated); | |
914 | bufptr = buffer + bytes; | |
915 | } | |
916 | ||
917 | for (i = 0; i < tlen; i++) | |
918 | { | |
919 | *bufptr++ = buf[i + offset]; | |
920 | if (buf[i + offset] == '\000') | |
921 | { | |
922 | nbytes_read += i + 1; | |
923 | goto done; | |
924 | } | |
925 | } | |
926 | ||
927 | memaddr += tlen; | |
928 | len -= tlen; | |
929 | nbytes_read += tlen; | |
930 | } | |
c5aa993b | 931 | done: |
6217bf3e | 932 | *string = buffer; |
c906108c SS |
933 | if (errnop != NULL) |
934 | *errnop = errcode; | |
c906108c SS |
935 | return nbytes_read; |
936 | } | |
937 | ||
07b82ea5 PA |
938 | struct target_section_table * |
939 | target_get_section_table (struct target_ops *target) | |
940 | { | |
07b82ea5 PA |
941 | if (targetdebug) |
942 | fprintf_unfiltered (gdb_stdlog, "target_get_section_table ()\n"); | |
943 | ||
7e35c012 | 944 | return (*target->to_get_section_table) (target); |
07b82ea5 PA |
945 | } |
946 | ||
8db32d44 | 947 | /* Find a section containing ADDR. */ |
07b82ea5 | 948 | |
0542c86d | 949 | struct target_section * |
8db32d44 AC |
950 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
951 | { | |
07b82ea5 | 952 | struct target_section_table *table = target_get_section_table (target); |
0542c86d | 953 | struct target_section *secp; |
07b82ea5 PA |
954 | |
955 | if (table == NULL) | |
956 | return NULL; | |
957 | ||
958 | for (secp = table->sections; secp < table->sections_end; secp++) | |
8db32d44 AC |
959 | { |
960 | if (addr >= secp->addr && addr < secp->endaddr) | |
961 | return secp; | |
962 | } | |
963 | return NULL; | |
964 | } | |
965 | ||
9f713294 YQ |
966 | /* Read memory from more than one valid target. A core file, for |
967 | instance, could have some of memory but delegate other bits to | |
968 | the target below it. So, we must manually try all targets. */ | |
969 | ||
9b409511 | 970 | static enum target_xfer_status |
17fde6d0 | 971 | raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf, |
9b409511 YQ |
972 | const gdb_byte *writebuf, ULONGEST memaddr, LONGEST len, |
973 | ULONGEST *xfered_len) | |
9f713294 | 974 | { |
9b409511 | 975 | enum target_xfer_status res; |
9f713294 YQ |
976 | |
977 | do | |
978 | { | |
979 | res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 YQ |
980 | readbuf, writebuf, memaddr, len, |
981 | xfered_len); | |
982 | if (res == TARGET_XFER_OK) | |
9f713294 YQ |
983 | break; |
984 | ||
633785ff | 985 | /* Stop if the target reports that the memory is not available. */ |
bc113b4e | 986 | if (res == TARGET_XFER_UNAVAILABLE) |
633785ff MM |
987 | break; |
988 | ||
9f713294 YQ |
989 | /* We want to continue past core files to executables, but not |
990 | past a running target's memory. */ | |
991 | if (ops->to_has_all_memory (ops)) | |
992 | break; | |
993 | ||
994 | ops = ops->beneath; | |
995 | } | |
996 | while (ops != NULL); | |
997 | ||
0f26cec1 PA |
998 | /* The cache works at the raw memory level. Make sure the cache |
999 | gets updated with raw contents no matter what kind of memory | |
1000 | object was originally being written. Note we do write-through | |
1001 | first, so that if it fails, we don't write to the cache contents | |
1002 | that never made it to the target. */ | |
1003 | if (writebuf != NULL | |
1004 | && !ptid_equal (inferior_ptid, null_ptid) | |
1005 | && target_dcache_init_p () | |
1006 | && (stack_cache_enabled_p () || code_cache_enabled_p ())) | |
1007 | { | |
1008 | DCACHE *dcache = target_dcache_get (); | |
1009 | ||
1010 | /* Note that writing to an area of memory which wasn't present | |
1011 | in the cache doesn't cause it to be loaded in. */ | |
1012 | dcache_update (dcache, res, memaddr, writebuf, *xfered_len); | |
1013 | } | |
1014 | ||
9f713294 YQ |
1015 | return res; |
1016 | } | |
1017 | ||
7f79c47e DE |
1018 | /* Perform a partial memory transfer. |
1019 | For docs see target.h, to_xfer_partial. */ | |
cf7a04e8 | 1020 | |
9b409511 | 1021 | static enum target_xfer_status |
f0ba3972 | 1022 | memory_xfer_partial_1 (struct target_ops *ops, enum target_object object, |
17fde6d0 | 1023 | gdb_byte *readbuf, const gdb_byte *writebuf, ULONGEST memaddr, |
9b409511 | 1024 | ULONGEST len, ULONGEST *xfered_len) |
0779438d | 1025 | { |
9b409511 | 1026 | enum target_xfer_status res; |
cf7a04e8 DJ |
1027 | int reg_len; |
1028 | struct mem_region *region; | |
4e5d721f | 1029 | struct inferior *inf; |
cf7a04e8 | 1030 | |
07b82ea5 PA |
1031 | /* For accesses to unmapped overlay sections, read directly from |
1032 | files. Must do this first, as MEMADDR may need adjustment. */ | |
1033 | if (readbuf != NULL && overlay_debugging) | |
1034 | { | |
1035 | struct obj_section *section = find_pc_overlay (memaddr); | |
5d502164 | 1036 | |
07b82ea5 PA |
1037 | if (pc_in_unmapped_range (memaddr, section)) |
1038 | { | |
1039 | struct target_section_table *table | |
1040 | = target_get_section_table (ops); | |
1041 | const char *section_name = section->the_bfd_section->name; | |
5d502164 | 1042 | |
07b82ea5 PA |
1043 | memaddr = overlay_mapped_address (memaddr, section); |
1044 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 1045 | memaddr, len, xfered_len, |
07b82ea5 PA |
1046 | table->sections, |
1047 | table->sections_end, | |
1048 | section_name); | |
1049 | } | |
1050 | } | |
1051 | ||
1052 | /* Try the executable files, if "trust-readonly-sections" is set. */ | |
cf7a04e8 DJ |
1053 | if (readbuf != NULL && trust_readonly) |
1054 | { | |
0542c86d | 1055 | struct target_section *secp; |
07b82ea5 | 1056 | struct target_section_table *table; |
cf7a04e8 DJ |
1057 | |
1058 | secp = target_section_by_addr (ops, memaddr); | |
1059 | if (secp != NULL | |
2b2848e2 DE |
1060 | && (bfd_get_section_flags (secp->the_bfd_section->owner, |
1061 | secp->the_bfd_section) | |
cf7a04e8 | 1062 | & SEC_READONLY)) |
07b82ea5 PA |
1063 | { |
1064 | table = target_get_section_table (ops); | |
1065 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 1066 | memaddr, len, xfered_len, |
07b82ea5 PA |
1067 | table->sections, |
1068 | table->sections_end, | |
1069 | NULL); | |
1070 | } | |
98646950 UW |
1071 | } |
1072 | ||
cf7a04e8 DJ |
1073 | /* Try GDB's internal data cache. */ |
1074 | region = lookup_mem_region (memaddr); | |
4b5752d0 VP |
1075 | /* region->hi == 0 means there's no upper bound. */ |
1076 | if (memaddr + len < region->hi || region->hi == 0) | |
cf7a04e8 DJ |
1077 | reg_len = len; |
1078 | else | |
1079 | reg_len = region->hi - memaddr; | |
1080 | ||
1081 | switch (region->attrib.mode) | |
1082 | { | |
1083 | case MEM_RO: | |
1084 | if (writebuf != NULL) | |
2ed4b548 | 1085 | return TARGET_XFER_E_IO; |
cf7a04e8 DJ |
1086 | break; |
1087 | ||
1088 | case MEM_WO: | |
1089 | if (readbuf != NULL) | |
2ed4b548 | 1090 | return TARGET_XFER_E_IO; |
cf7a04e8 | 1091 | break; |
a76d924d DJ |
1092 | |
1093 | case MEM_FLASH: | |
1094 | /* We only support writing to flash during "load" for now. */ | |
1095 | if (writebuf != NULL) | |
1096 | error (_("Writing to flash memory forbidden in this context")); | |
1097 | break; | |
4b5752d0 VP |
1098 | |
1099 | case MEM_NONE: | |
2ed4b548 | 1100 | return TARGET_XFER_E_IO; |
cf7a04e8 DJ |
1101 | } |
1102 | ||
6c95b8df PA |
1103 | if (!ptid_equal (inferior_ptid, null_ptid)) |
1104 | inf = find_inferior_pid (ptid_get_pid (inferior_ptid)); | |
1105 | else | |
1106 | inf = NULL; | |
4e5d721f DE |
1107 | |
1108 | if (inf != NULL | |
0f26cec1 | 1109 | && readbuf != NULL |
2f4d8875 PA |
1110 | /* The dcache reads whole cache lines; that doesn't play well |
1111 | with reading from a trace buffer, because reading outside of | |
1112 | the collected memory range fails. */ | |
1113 | && get_traceframe_number () == -1 | |
4e5d721f | 1114 | && (region->attrib.cache |
29453a14 YQ |
1115 | || (stack_cache_enabled_p () && object == TARGET_OBJECT_STACK_MEMORY) |
1116 | || (code_cache_enabled_p () && object == TARGET_OBJECT_CODE_MEMORY))) | |
cf7a04e8 | 1117 | { |
2a2f9fe4 YQ |
1118 | DCACHE *dcache = target_dcache_get_or_init (); |
1119 | ||
0f26cec1 PA |
1120 | return dcache_read_memory_partial (ops, dcache, memaddr, readbuf, |
1121 | reg_len, xfered_len); | |
cf7a04e8 DJ |
1122 | } |
1123 | ||
1124 | /* If none of those methods found the memory we wanted, fall back | |
1125 | to a target partial transfer. Normally a single call to | |
1126 | to_xfer_partial is enough; if it doesn't recognize an object | |
1127 | it will call the to_xfer_partial of the next target down. | |
1128 | But for memory this won't do. Memory is the only target | |
9b409511 YQ |
1129 | object which can be read from more than one valid target. |
1130 | A core file, for instance, could have some of memory but | |
1131 | delegate other bits to the target below it. So, we must | |
1132 | manually try all targets. */ | |
1133 | ||
1134 | res = raw_memory_xfer_partial (ops, readbuf, writebuf, memaddr, reg_len, | |
1135 | xfered_len); | |
cf7a04e8 DJ |
1136 | |
1137 | /* If we still haven't got anything, return the last error. We | |
1138 | give up. */ | |
1139 | return res; | |
0779438d AC |
1140 | } |
1141 | ||
f0ba3972 PA |
1142 | /* Perform a partial memory transfer. For docs see target.h, |
1143 | to_xfer_partial. */ | |
1144 | ||
9b409511 | 1145 | static enum target_xfer_status |
f0ba3972 | 1146 | memory_xfer_partial (struct target_ops *ops, enum target_object object, |
9b409511 YQ |
1147 | gdb_byte *readbuf, const gdb_byte *writebuf, |
1148 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) | |
f0ba3972 | 1149 | { |
9b409511 | 1150 | enum target_xfer_status res; |
f0ba3972 PA |
1151 | |
1152 | /* Zero length requests are ok and require no work. */ | |
1153 | if (len == 0) | |
9b409511 | 1154 | return TARGET_XFER_EOF; |
f0ba3972 PA |
1155 | |
1156 | /* Fill in READBUF with breakpoint shadows, or WRITEBUF with | |
1157 | breakpoint insns, thus hiding out from higher layers whether | |
1158 | there are software breakpoints inserted in the code stream. */ | |
1159 | if (readbuf != NULL) | |
1160 | { | |
9b409511 YQ |
1161 | res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len, |
1162 | xfered_len); | |
f0ba3972 | 1163 | |
9b409511 | 1164 | if (res == TARGET_XFER_OK && !show_memory_breakpoints) |
c63528fc | 1165 | breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, *xfered_len); |
f0ba3972 PA |
1166 | } |
1167 | else | |
1168 | { | |
1169 | void *buf; | |
1170 | struct cleanup *old_chain; | |
1171 | ||
67c059c2 AB |
1172 | /* A large write request is likely to be partially satisfied |
1173 | by memory_xfer_partial_1. We will continually malloc | |
1174 | and free a copy of the entire write request for breakpoint | |
1175 | shadow handling even though we only end up writing a small | |
1176 | subset of it. Cap writes to 4KB to mitigate this. */ | |
1177 | len = min (4096, len); | |
1178 | ||
f0ba3972 PA |
1179 | buf = xmalloc (len); |
1180 | old_chain = make_cleanup (xfree, buf); | |
1181 | memcpy (buf, writebuf, len); | |
1182 | ||
1183 | breakpoint_xfer_memory (NULL, buf, writebuf, memaddr, len); | |
9b409511 YQ |
1184 | res = memory_xfer_partial_1 (ops, object, NULL, buf, memaddr, len, |
1185 | xfered_len); | |
f0ba3972 PA |
1186 | |
1187 | do_cleanups (old_chain); | |
1188 | } | |
1189 | ||
1190 | return res; | |
1191 | } | |
1192 | ||
8defab1a DJ |
1193 | static void |
1194 | restore_show_memory_breakpoints (void *arg) | |
1195 | { | |
1196 | show_memory_breakpoints = (uintptr_t) arg; | |
1197 | } | |
1198 | ||
1199 | struct cleanup * | |
1200 | make_show_memory_breakpoints_cleanup (int show) | |
1201 | { | |
1202 | int current = show_memory_breakpoints; | |
8defab1a | 1203 | |
5d502164 | 1204 | show_memory_breakpoints = show; |
8defab1a DJ |
1205 | return make_cleanup (restore_show_memory_breakpoints, |
1206 | (void *) (uintptr_t) current); | |
1207 | } | |
1208 | ||
7f79c47e DE |
1209 | /* For docs see target.h, to_xfer_partial. */ |
1210 | ||
9b409511 | 1211 | enum target_xfer_status |
27394598 AC |
1212 | target_xfer_partial (struct target_ops *ops, |
1213 | enum target_object object, const char *annex, | |
4ac248ca | 1214 | gdb_byte *readbuf, const gdb_byte *writebuf, |
9b409511 YQ |
1215 | ULONGEST offset, ULONGEST len, |
1216 | ULONGEST *xfered_len) | |
27394598 | 1217 | { |
9b409511 | 1218 | enum target_xfer_status retval; |
27394598 AC |
1219 | |
1220 | gdb_assert (ops->to_xfer_partial != NULL); | |
cf7a04e8 | 1221 | |
ce6d0892 YQ |
1222 | /* Transfer is done when LEN is zero. */ |
1223 | if (len == 0) | |
9b409511 | 1224 | return TARGET_XFER_EOF; |
ce6d0892 | 1225 | |
d914c394 SS |
1226 | if (writebuf && !may_write_memory) |
1227 | error (_("Writing to memory is not allowed (addr %s, len %s)"), | |
1228 | core_addr_to_string_nz (offset), plongest (len)); | |
1229 | ||
9b409511 YQ |
1230 | *xfered_len = 0; |
1231 | ||
cf7a04e8 DJ |
1232 | /* If this is a memory transfer, let the memory-specific code |
1233 | have a look at it instead. Memory transfers are more | |
1234 | complicated. */ | |
29453a14 YQ |
1235 | if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY |
1236 | || object == TARGET_OBJECT_CODE_MEMORY) | |
4e5d721f | 1237 | retval = memory_xfer_partial (ops, object, readbuf, |
9b409511 | 1238 | writebuf, offset, len, xfered_len); |
9f713294 | 1239 | else if (object == TARGET_OBJECT_RAW_MEMORY) |
cf7a04e8 | 1240 | { |
9f713294 | 1241 | /* Request the normal memory object from other layers. */ |
9b409511 YQ |
1242 | retval = raw_memory_xfer_partial (ops, readbuf, writebuf, offset, len, |
1243 | xfered_len); | |
cf7a04e8 | 1244 | } |
9f713294 YQ |
1245 | else |
1246 | retval = ops->to_xfer_partial (ops, object, annex, readbuf, | |
9b409511 | 1247 | writebuf, offset, len, xfered_len); |
cf7a04e8 | 1248 | |
27394598 AC |
1249 | if (targetdebug) |
1250 | { | |
1251 | const unsigned char *myaddr = NULL; | |
1252 | ||
1253 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a | 1254 | "%s:target_xfer_partial " |
9b409511 | 1255 | "(%d, %s, %s, %s, %s, %s) = %d, %s", |
27394598 AC |
1256 | ops->to_shortname, |
1257 | (int) object, | |
1258 | (annex ? annex : "(null)"), | |
53b71562 JB |
1259 | host_address_to_string (readbuf), |
1260 | host_address_to_string (writebuf), | |
0b1553bc | 1261 | core_addr_to_string_nz (offset), |
9b409511 YQ |
1262 | pulongest (len), retval, |
1263 | pulongest (*xfered_len)); | |
27394598 AC |
1264 | |
1265 | if (readbuf) | |
1266 | myaddr = readbuf; | |
1267 | if (writebuf) | |
1268 | myaddr = writebuf; | |
9b409511 | 1269 | if (retval == TARGET_XFER_OK && myaddr != NULL) |
27394598 AC |
1270 | { |
1271 | int i; | |
2bc416ba | 1272 | |
27394598 | 1273 | fputs_unfiltered (", bytes =", gdb_stdlog); |
9b409511 | 1274 | for (i = 0; i < *xfered_len; i++) |
27394598 | 1275 | { |
53b71562 | 1276 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1277 | { |
1278 | if (targetdebug < 2 && i > 0) | |
1279 | { | |
1280 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
1281 | break; | |
1282 | } | |
1283 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1284 | } | |
2bc416ba | 1285 | |
27394598 AC |
1286 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
1287 | } | |
1288 | } | |
2bc416ba | 1289 | |
27394598 AC |
1290 | fputc_unfiltered ('\n', gdb_stdlog); |
1291 | } | |
9b409511 YQ |
1292 | |
1293 | /* Check implementations of to_xfer_partial update *XFERED_LEN | |
1294 | properly. Do assertion after printing debug messages, so that we | |
1295 | can find more clues on assertion failure from debugging messages. */ | |
bc113b4e | 1296 | if (retval == TARGET_XFER_OK || retval == TARGET_XFER_UNAVAILABLE) |
9b409511 YQ |
1297 | gdb_assert (*xfered_len > 0); |
1298 | ||
27394598 AC |
1299 | return retval; |
1300 | } | |
1301 | ||
578d3588 PA |
1302 | /* Read LEN bytes of target memory at address MEMADDR, placing the |
1303 | results in GDB's memory at MYADDR. Returns either 0 for success or | |
9b409511 | 1304 | TARGET_XFER_E_IO if any error occurs. |
c906108c SS |
1305 | |
1306 | If an error occurs, no guarantee is made about the contents of the data at | |
1307 | MYADDR. In particular, the caller should not depend upon partial reads | |
1308 | filling the buffer with good data. There is no way for the caller to know | |
1309 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 | 1310 | deal with partial reads should call target_read (which will retry until |
c378eb4e | 1311 | it makes no progress, and then return how much was transferred). */ |
c906108c SS |
1312 | |
1313 | int | |
1b162304 | 1314 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
c906108c | 1315 | { |
c35b1492 PA |
1316 | /* Dispatch to the topmost target, not the flattened current_target. |
1317 | Memory accesses check target->to_has_(all_)memory, and the | |
1318 | flattened target doesn't inherit those. */ | |
1319 | if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1320 | myaddr, memaddr, len) == len) |
1321 | return 0; | |
0779438d | 1322 | else |
578d3588 | 1323 | return TARGET_XFER_E_IO; |
c906108c SS |
1324 | } |
1325 | ||
aee4bf85 PA |
1326 | /* Like target_read_memory, but specify explicitly that this is a read |
1327 | from the target's raw memory. That is, this read bypasses the | |
1328 | dcache, breakpoint shadowing, etc. */ | |
1329 | ||
1330 | int | |
1331 | target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1332 | { | |
1333 | /* See comment in target_read_memory about why the request starts at | |
1334 | current_target.beneath. */ | |
1335 | if (target_read (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, | |
1336 | myaddr, memaddr, len) == len) | |
1337 | return 0; | |
1338 | else | |
1339 | return TARGET_XFER_E_IO; | |
1340 | } | |
1341 | ||
4e5d721f DE |
1342 | /* Like target_read_memory, but specify explicitly that this is a read from |
1343 | the target's stack. This may trigger different cache behavior. */ | |
1344 | ||
1345 | int | |
45aa4659 | 1346 | target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
4e5d721f | 1347 | { |
aee4bf85 PA |
1348 | /* See comment in target_read_memory about why the request starts at |
1349 | current_target.beneath. */ | |
4e5d721f DE |
1350 | if (target_read (current_target.beneath, TARGET_OBJECT_STACK_MEMORY, NULL, |
1351 | myaddr, memaddr, len) == len) | |
1352 | return 0; | |
1353 | else | |
578d3588 | 1354 | return TARGET_XFER_E_IO; |
4e5d721f DE |
1355 | } |
1356 | ||
29453a14 YQ |
1357 | /* Like target_read_memory, but specify explicitly that this is a read from |
1358 | the target's code. This may trigger different cache behavior. */ | |
1359 | ||
1360 | int | |
1361 | target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1362 | { | |
aee4bf85 PA |
1363 | /* See comment in target_read_memory about why the request starts at |
1364 | current_target.beneath. */ | |
29453a14 YQ |
1365 | if (target_read (current_target.beneath, TARGET_OBJECT_CODE_MEMORY, NULL, |
1366 | myaddr, memaddr, len) == len) | |
1367 | return 0; | |
1368 | else | |
1369 | return TARGET_XFER_E_IO; | |
1370 | } | |
1371 | ||
7f79c47e | 1372 | /* Write LEN bytes from MYADDR to target memory at address MEMADDR. |
9b409511 | 1373 | Returns either 0 for success or TARGET_XFER_E_IO if any |
578d3588 PA |
1374 | error occurs. If an error occurs, no guarantee is made about how |
1375 | much data got written. Callers that can deal with partial writes | |
1376 | should call target_write. */ | |
7f79c47e | 1377 | |
c906108c | 1378 | int |
45aa4659 | 1379 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
c906108c | 1380 | { |
aee4bf85 PA |
1381 | /* See comment in target_read_memory about why the request starts at |
1382 | current_target.beneath. */ | |
c35b1492 | 1383 | if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, |
cf7a04e8 DJ |
1384 | myaddr, memaddr, len) == len) |
1385 | return 0; | |
0779438d | 1386 | else |
578d3588 | 1387 | return TARGET_XFER_E_IO; |
c906108c | 1388 | } |
c5aa993b | 1389 | |
f0ba3972 | 1390 | /* Write LEN bytes from MYADDR to target raw memory at address |
9b409511 | 1391 | MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO |
578d3588 PA |
1392 | if any error occurs. If an error occurs, no guarantee is made |
1393 | about how much data got written. Callers that can deal with | |
1394 | partial writes should call target_write. */ | |
f0ba3972 PA |
1395 | |
1396 | int | |
45aa4659 | 1397 | target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
f0ba3972 | 1398 | { |
aee4bf85 PA |
1399 | /* See comment in target_read_memory about why the request starts at |
1400 | current_target.beneath. */ | |
f0ba3972 PA |
1401 | if (target_write (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, |
1402 | myaddr, memaddr, len) == len) | |
1403 | return 0; | |
1404 | else | |
578d3588 | 1405 | return TARGET_XFER_E_IO; |
f0ba3972 PA |
1406 | } |
1407 | ||
fd79ecee DJ |
1408 | /* Fetch the target's memory map. */ |
1409 | ||
1410 | VEC(mem_region_s) * | |
1411 | target_memory_map (void) | |
1412 | { | |
1413 | VEC(mem_region_s) *result; | |
1414 | struct mem_region *last_one, *this_one; | |
1415 | int ix; | |
1416 | struct target_ops *t; | |
1417 | ||
1418 | if (targetdebug) | |
1419 | fprintf_unfiltered (gdb_stdlog, "target_memory_map ()\n"); | |
1420 | ||
6b2c5a57 | 1421 | result = current_target.to_memory_map (¤t_target); |
fd79ecee DJ |
1422 | if (result == NULL) |
1423 | return NULL; | |
1424 | ||
1425 | qsort (VEC_address (mem_region_s, result), | |
1426 | VEC_length (mem_region_s, result), | |
1427 | sizeof (struct mem_region), mem_region_cmp); | |
1428 | ||
1429 | /* Check that regions do not overlap. Simultaneously assign | |
1430 | a numbering for the "mem" commands to use to refer to | |
1431 | each region. */ | |
1432 | last_one = NULL; | |
1433 | for (ix = 0; VEC_iterate (mem_region_s, result, ix, this_one); ix++) | |
1434 | { | |
1435 | this_one->number = ix; | |
1436 | ||
1437 | if (last_one && last_one->hi > this_one->lo) | |
1438 | { | |
1439 | warning (_("Overlapping regions in memory map: ignoring")); | |
1440 | VEC_free (mem_region_s, result); | |
1441 | return NULL; | |
1442 | } | |
1443 | last_one = this_one; | |
1444 | } | |
1445 | ||
1446 | return result; | |
1447 | } | |
1448 | ||
a76d924d DJ |
1449 | void |
1450 | target_flash_erase (ULONGEST address, LONGEST length) | |
1451 | { | |
e8a6c6ac TT |
1452 | if (targetdebug) |
1453 | fprintf_unfiltered (gdb_stdlog, "target_flash_erase (%s, %s)\n", | |
1454 | hex_string (address), phex (length, 0)); | |
1455 | current_target.to_flash_erase (¤t_target, address, length); | |
a76d924d DJ |
1456 | } |
1457 | ||
1458 | void | |
1459 | target_flash_done (void) | |
1460 | { | |
f6fb2925 TT |
1461 | if (targetdebug) |
1462 | fprintf_unfiltered (gdb_stdlog, "target_flash_done\n"); | |
1463 | current_target.to_flash_done (¤t_target); | |
a76d924d DJ |
1464 | } |
1465 | ||
920d2a44 AC |
1466 | static void |
1467 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1468 | struct cmd_list_element *c, const char *value) | |
1469 | { | |
3e43a32a MS |
1470 | fprintf_filtered (file, |
1471 | _("Mode for reading from readonly sections is %s.\n"), | |
920d2a44 AC |
1472 | value); |
1473 | } | |
3a11626d | 1474 | |
7f79c47e | 1475 | /* Target vector read/write partial wrapper functions. */ |
0088c768 | 1476 | |
9b409511 | 1477 | static enum target_xfer_status |
1e3ff5ad AC |
1478 | target_read_partial (struct target_ops *ops, |
1479 | enum target_object object, | |
1b0ba102 | 1480 | const char *annex, gdb_byte *buf, |
9b409511 YQ |
1481 | ULONGEST offset, ULONGEST len, |
1482 | ULONGEST *xfered_len) | |
1e3ff5ad | 1483 | { |
9b409511 YQ |
1484 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len, |
1485 | xfered_len); | |
1e3ff5ad AC |
1486 | } |
1487 | ||
8a55ffb0 | 1488 | static enum target_xfer_status |
1e3ff5ad AC |
1489 | target_write_partial (struct target_ops *ops, |
1490 | enum target_object object, | |
1b0ba102 | 1491 | const char *annex, const gdb_byte *buf, |
9b409511 | 1492 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len) |
1e3ff5ad | 1493 | { |
9b409511 YQ |
1494 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len, |
1495 | xfered_len); | |
1e3ff5ad AC |
1496 | } |
1497 | ||
1498 | /* Wrappers to perform the full transfer. */ | |
7f79c47e DE |
1499 | |
1500 | /* For docs on target_read see target.h. */ | |
1501 | ||
1e3ff5ad AC |
1502 | LONGEST |
1503 | target_read (struct target_ops *ops, | |
1504 | enum target_object object, | |
1b0ba102 | 1505 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1506 | ULONGEST offset, LONGEST len) |
1507 | { | |
1508 | LONGEST xfered = 0; | |
5d502164 | 1509 | |
1e3ff5ad AC |
1510 | while (xfered < len) |
1511 | { | |
9b409511 YQ |
1512 | ULONGEST xfered_len; |
1513 | enum target_xfer_status status; | |
1514 | ||
1515 | status = target_read_partial (ops, object, annex, | |
1516 | (gdb_byte *) buf + xfered, | |
1517 | offset + xfered, len - xfered, | |
1518 | &xfered_len); | |
5d502164 | 1519 | |
1e3ff5ad | 1520 | /* Call an observer, notifying them of the xfer progress? */ |
9b409511 | 1521 | if (status == TARGET_XFER_EOF) |
13547ab6 | 1522 | return xfered; |
9b409511 YQ |
1523 | else if (status == TARGET_XFER_OK) |
1524 | { | |
1525 | xfered += xfered_len; | |
1526 | QUIT; | |
1527 | } | |
1528 | else | |
0088c768 | 1529 | return -1; |
9b409511 | 1530 | |
1e3ff5ad AC |
1531 | } |
1532 | return len; | |
1533 | } | |
1534 | ||
f1a507a1 JB |
1535 | /* Assuming that the entire [begin, end) range of memory cannot be |
1536 | read, try to read whatever subrange is possible to read. | |
1537 | ||
1538 | The function returns, in RESULT, either zero or one memory block. | |
1539 | If there's a readable subrange at the beginning, it is completely | |
1540 | read and returned. Any further readable subrange will not be read. | |
1541 | Otherwise, if there's a readable subrange at the end, it will be | |
1542 | completely read and returned. Any readable subranges before it | |
1543 | (obviously, not starting at the beginning), will be ignored. In | |
1544 | other cases -- either no readable subrange, or readable subrange(s) | |
1545 | that is neither at the beginning, or end, nothing is returned. | |
1546 | ||
1547 | The purpose of this function is to handle a read across a boundary | |
1548 | of accessible memory in a case when memory map is not available. | |
1549 | The above restrictions are fine for this case, but will give | |
1550 | incorrect results if the memory is 'patchy'. However, supporting | |
1551 | 'patchy' memory would require trying to read every single byte, | |
1552 | and it seems unacceptable solution. Explicit memory map is | |
1553 | recommended for this case -- and target_read_memory_robust will | |
1554 | take care of reading multiple ranges then. */ | |
8dedea02 VP |
1555 | |
1556 | static void | |
3e43a32a MS |
1557 | read_whatever_is_readable (struct target_ops *ops, |
1558 | ULONGEST begin, ULONGEST end, | |
8dedea02 | 1559 | VEC(memory_read_result_s) **result) |
d5086790 | 1560 | { |
f1a507a1 | 1561 | gdb_byte *buf = xmalloc (end - begin); |
8dedea02 VP |
1562 | ULONGEST current_begin = begin; |
1563 | ULONGEST current_end = end; | |
1564 | int forward; | |
1565 | memory_read_result_s r; | |
9b409511 | 1566 | ULONGEST xfered_len; |
8dedea02 VP |
1567 | |
1568 | /* If we previously failed to read 1 byte, nothing can be done here. */ | |
1569 | if (end - begin <= 1) | |
13b3fd9b MS |
1570 | { |
1571 | xfree (buf); | |
1572 | return; | |
1573 | } | |
8dedea02 VP |
1574 | |
1575 | /* Check that either first or the last byte is readable, and give up | |
c378eb4e | 1576 | if not. This heuristic is meant to permit reading accessible memory |
8dedea02 VP |
1577 | at the boundary of accessible region. */ |
1578 | if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 | 1579 | buf, begin, 1, &xfered_len) == TARGET_XFER_OK) |
8dedea02 VP |
1580 | { |
1581 | forward = 1; | |
1582 | ++current_begin; | |
1583 | } | |
1584 | else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 YQ |
1585 | buf + (end-begin) - 1, end - 1, 1, |
1586 | &xfered_len) == TARGET_XFER_OK) | |
8dedea02 VP |
1587 | { |
1588 | forward = 0; | |
1589 | --current_end; | |
1590 | } | |
1591 | else | |
1592 | { | |
13b3fd9b | 1593 | xfree (buf); |
8dedea02 VP |
1594 | return; |
1595 | } | |
1596 | ||
1597 | /* Loop invariant is that the [current_begin, current_end) was previously | |
1598 | found to be not readable as a whole. | |
1599 | ||
1600 | Note loop condition -- if the range has 1 byte, we can't divide the range | |
1601 | so there's no point trying further. */ | |
1602 | while (current_end - current_begin > 1) | |
1603 | { | |
1604 | ULONGEST first_half_begin, first_half_end; | |
1605 | ULONGEST second_half_begin, second_half_end; | |
1606 | LONGEST xfer; | |
8dedea02 | 1607 | ULONGEST middle = current_begin + (current_end - current_begin)/2; |
f1a507a1 | 1608 | |
8dedea02 VP |
1609 | if (forward) |
1610 | { | |
1611 | first_half_begin = current_begin; | |
1612 | first_half_end = middle; | |
1613 | second_half_begin = middle; | |
1614 | second_half_end = current_end; | |
1615 | } | |
1616 | else | |
1617 | { | |
1618 | first_half_begin = middle; | |
1619 | first_half_end = current_end; | |
1620 | second_half_begin = current_begin; | |
1621 | second_half_end = middle; | |
1622 | } | |
1623 | ||
1624 | xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
1625 | buf + (first_half_begin - begin), | |
1626 | first_half_begin, | |
1627 | first_half_end - first_half_begin); | |
1628 | ||
1629 | if (xfer == first_half_end - first_half_begin) | |
1630 | { | |
c378eb4e | 1631 | /* This half reads up fine. So, the error must be in the |
3e43a32a | 1632 | other half. */ |
8dedea02 VP |
1633 | current_begin = second_half_begin; |
1634 | current_end = second_half_end; | |
1635 | } | |
1636 | else | |
1637 | { | |
c378eb4e MS |
1638 | /* This half is not readable. Because we've tried one byte, we |
1639 | know some part of this half if actually redable. Go to the next | |
8dedea02 VP |
1640 | iteration to divide again and try to read. |
1641 | ||
1642 | We don't handle the other half, because this function only tries | |
1643 | to read a single readable subrange. */ | |
1644 | current_begin = first_half_begin; | |
1645 | current_end = first_half_end; | |
1646 | } | |
1647 | } | |
1648 | ||
1649 | if (forward) | |
1650 | { | |
1651 | /* The [begin, current_begin) range has been read. */ | |
1652 | r.begin = begin; | |
1653 | r.end = current_begin; | |
1654 | r.data = buf; | |
1655 | } | |
1656 | else | |
1657 | { | |
1658 | /* The [current_end, end) range has been read. */ | |
1659 | LONGEST rlen = end - current_end; | |
f1a507a1 | 1660 | |
8dedea02 VP |
1661 | r.data = xmalloc (rlen); |
1662 | memcpy (r.data, buf + current_end - begin, rlen); | |
1663 | r.begin = current_end; | |
1664 | r.end = end; | |
1665 | xfree (buf); | |
1666 | } | |
1667 | VEC_safe_push(memory_read_result_s, (*result), &r); | |
1668 | } | |
1669 | ||
1670 | void | |
1671 | free_memory_read_result_vector (void *x) | |
1672 | { | |
1673 | VEC(memory_read_result_s) *v = x; | |
1674 | memory_read_result_s *current; | |
1675 | int ix; | |
1676 | ||
1677 | for (ix = 0; VEC_iterate (memory_read_result_s, v, ix, current); ++ix) | |
1678 | { | |
1679 | xfree (current->data); | |
1680 | } | |
1681 | VEC_free (memory_read_result_s, v); | |
1682 | } | |
1683 | ||
1684 | VEC(memory_read_result_s) * | |
1685 | read_memory_robust (struct target_ops *ops, ULONGEST offset, LONGEST len) | |
1686 | { | |
1687 | VEC(memory_read_result_s) *result = 0; | |
1688 | ||
1689 | LONGEST xfered = 0; | |
d5086790 VP |
1690 | while (xfered < len) |
1691 | { | |
8dedea02 VP |
1692 | struct mem_region *region = lookup_mem_region (offset + xfered); |
1693 | LONGEST rlen; | |
5d502164 | 1694 | |
8dedea02 VP |
1695 | /* If there is no explicit region, a fake one should be created. */ |
1696 | gdb_assert (region); | |
1697 | ||
1698 | if (region->hi == 0) | |
1699 | rlen = len - xfered; | |
1700 | else | |
1701 | rlen = region->hi - offset; | |
1702 | ||
1703 | if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO) | |
d5086790 | 1704 | { |
c378eb4e | 1705 | /* Cannot read this region. Note that we can end up here only |
8dedea02 VP |
1706 | if the region is explicitly marked inaccessible, or |
1707 | 'inaccessible-by-default' is in effect. */ | |
1708 | xfered += rlen; | |
1709 | } | |
1710 | else | |
1711 | { | |
1712 | LONGEST to_read = min (len - xfered, rlen); | |
1713 | gdb_byte *buffer = (gdb_byte *)xmalloc (to_read); | |
1714 | ||
1715 | LONGEST xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
1716 | (gdb_byte *) buffer, | |
1717 | offset + xfered, to_read); | |
1718 | /* Call an observer, notifying them of the xfer progress? */ | |
d5086790 | 1719 | if (xfer <= 0) |
d5086790 | 1720 | { |
c378eb4e | 1721 | /* Got an error reading full chunk. See if maybe we can read |
8dedea02 VP |
1722 | some subrange. */ |
1723 | xfree (buffer); | |
3e43a32a MS |
1724 | read_whatever_is_readable (ops, offset + xfered, |
1725 | offset + xfered + to_read, &result); | |
8dedea02 | 1726 | xfered += to_read; |
d5086790 | 1727 | } |
8dedea02 VP |
1728 | else |
1729 | { | |
1730 | struct memory_read_result r; | |
1731 | r.data = buffer; | |
1732 | r.begin = offset + xfered; | |
1733 | r.end = r.begin + xfer; | |
1734 | VEC_safe_push (memory_read_result_s, result, &r); | |
1735 | xfered += xfer; | |
1736 | } | |
1737 | QUIT; | |
d5086790 | 1738 | } |
d5086790 | 1739 | } |
8dedea02 | 1740 | return result; |
d5086790 VP |
1741 | } |
1742 | ||
8dedea02 | 1743 | |
cf7a04e8 DJ |
1744 | /* An alternative to target_write with progress callbacks. */ |
1745 | ||
1e3ff5ad | 1746 | LONGEST |
cf7a04e8 DJ |
1747 | target_write_with_progress (struct target_ops *ops, |
1748 | enum target_object object, | |
1749 | const char *annex, const gdb_byte *buf, | |
1750 | ULONGEST offset, LONGEST len, | |
1751 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad AC |
1752 | { |
1753 | LONGEST xfered = 0; | |
a76d924d DJ |
1754 | |
1755 | /* Give the progress callback a chance to set up. */ | |
1756 | if (progress) | |
1757 | (*progress) (0, baton); | |
1758 | ||
1e3ff5ad AC |
1759 | while (xfered < len) |
1760 | { | |
9b409511 YQ |
1761 | ULONGEST xfered_len; |
1762 | enum target_xfer_status status; | |
1763 | ||
1764 | status = target_write_partial (ops, object, annex, | |
1765 | (gdb_byte *) buf + xfered, | |
1766 | offset + xfered, len - xfered, | |
1767 | &xfered_len); | |
cf7a04e8 | 1768 | |
5c328c05 YQ |
1769 | if (status != TARGET_XFER_OK) |
1770 | return status == TARGET_XFER_EOF ? xfered : -1; | |
cf7a04e8 DJ |
1771 | |
1772 | if (progress) | |
9b409511 | 1773 | (*progress) (xfered_len, baton); |
cf7a04e8 | 1774 | |
9b409511 | 1775 | xfered += xfered_len; |
1e3ff5ad AC |
1776 | QUIT; |
1777 | } | |
1778 | return len; | |
1779 | } | |
1780 | ||
7f79c47e DE |
1781 | /* For docs on target_write see target.h. */ |
1782 | ||
cf7a04e8 DJ |
1783 | LONGEST |
1784 | target_write (struct target_ops *ops, | |
1785 | enum target_object object, | |
1786 | const char *annex, const gdb_byte *buf, | |
1787 | ULONGEST offset, LONGEST len) | |
1788 | { | |
1789 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
1790 | NULL, NULL); | |
1791 | } | |
1792 | ||
159f81f3 DJ |
1793 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
1794 | the size of the transferred data. PADDING additional bytes are | |
1795 | available in *BUF_P. This is a helper function for | |
1796 | target_read_alloc; see the declaration of that function for more | |
1797 | information. */ | |
13547ab6 | 1798 | |
159f81f3 DJ |
1799 | static LONGEST |
1800 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, | |
1801 | const char *annex, gdb_byte **buf_p, int padding) | |
13547ab6 DJ |
1802 | { |
1803 | size_t buf_alloc, buf_pos; | |
1804 | gdb_byte *buf; | |
13547ab6 DJ |
1805 | |
1806 | /* This function does not have a length parameter; it reads the | |
1807 | entire OBJECT). Also, it doesn't support objects fetched partly | |
1808 | from one target and partly from another (in a different stratum, | |
1809 | e.g. a core file and an executable). Both reasons make it | |
1810 | unsuitable for reading memory. */ | |
1811 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
1812 | ||
1813 | /* Start by reading up to 4K at a time. The target will throttle | |
1814 | this number down if necessary. */ | |
1815 | buf_alloc = 4096; | |
1816 | buf = xmalloc (buf_alloc); | |
1817 | buf_pos = 0; | |
1818 | while (1) | |
1819 | { | |
9b409511 YQ |
1820 | ULONGEST xfered_len; |
1821 | enum target_xfer_status status; | |
1822 | ||
1823 | status = target_read_partial (ops, object, annex, &buf[buf_pos], | |
1824 | buf_pos, buf_alloc - buf_pos - padding, | |
1825 | &xfered_len); | |
1826 | ||
1827 | if (status == TARGET_XFER_EOF) | |
13547ab6 DJ |
1828 | { |
1829 | /* Read all there was. */ | |
1830 | if (buf_pos == 0) | |
1831 | xfree (buf); | |
1832 | else | |
1833 | *buf_p = buf; | |
1834 | return buf_pos; | |
1835 | } | |
9b409511 YQ |
1836 | else if (status != TARGET_XFER_OK) |
1837 | { | |
1838 | /* An error occurred. */ | |
1839 | xfree (buf); | |
1840 | return TARGET_XFER_E_IO; | |
1841 | } | |
13547ab6 | 1842 | |
9b409511 | 1843 | buf_pos += xfered_len; |
13547ab6 DJ |
1844 | |
1845 | /* If the buffer is filling up, expand it. */ | |
1846 | if (buf_alloc < buf_pos * 2) | |
1847 | { | |
1848 | buf_alloc *= 2; | |
1849 | buf = xrealloc (buf, buf_alloc); | |
1850 | } | |
1851 | ||
1852 | QUIT; | |
1853 | } | |
1854 | } | |
1855 | ||
159f81f3 DJ |
1856 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
1857 | the size of the transferred data. See the declaration in "target.h" | |
1858 | function for more information about the return value. */ | |
1859 | ||
1860 | LONGEST | |
1861 | target_read_alloc (struct target_ops *ops, enum target_object object, | |
1862 | const char *annex, gdb_byte **buf_p) | |
1863 | { | |
1864 | return target_read_alloc_1 (ops, object, annex, buf_p, 0); | |
1865 | } | |
1866 | ||
1867 | /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and | |
1868 | returned as a string, allocated using xmalloc. If an error occurs | |
1869 | or the transfer is unsupported, NULL is returned. Empty objects | |
1870 | are returned as allocated but empty strings. A warning is issued | |
1871 | if the result contains any embedded NUL bytes. */ | |
1872 | ||
1873 | char * | |
1874 | target_read_stralloc (struct target_ops *ops, enum target_object object, | |
1875 | const char *annex) | |
1876 | { | |
39086a0e PA |
1877 | gdb_byte *buffer; |
1878 | char *bufstr; | |
7313baad | 1879 | LONGEST i, transferred; |
159f81f3 | 1880 | |
39086a0e PA |
1881 | transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1); |
1882 | bufstr = (char *) buffer; | |
159f81f3 DJ |
1883 | |
1884 | if (transferred < 0) | |
1885 | return NULL; | |
1886 | ||
1887 | if (transferred == 0) | |
1888 | return xstrdup (""); | |
1889 | ||
39086a0e | 1890 | bufstr[transferred] = 0; |
7313baad UW |
1891 | |
1892 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
39086a0e PA |
1893 | for (i = strlen (bufstr); i < transferred; i++) |
1894 | if (bufstr[i] != 0) | |
7313baad UW |
1895 | { |
1896 | warning (_("target object %d, annex %s, " | |
1897 | "contained unexpected null characters"), | |
1898 | (int) object, annex ? annex : "(none)"); | |
1899 | break; | |
1900 | } | |
159f81f3 | 1901 | |
39086a0e | 1902 | return bufstr; |
159f81f3 DJ |
1903 | } |
1904 | ||
b6591e8b AC |
1905 | /* Memory transfer methods. */ |
1906 | ||
1907 | void | |
1b0ba102 | 1908 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
1909 | LONGEST len) |
1910 | { | |
07b82ea5 PA |
1911 | /* This method is used to read from an alternate, non-current |
1912 | target. This read must bypass the overlay support (as symbols | |
1913 | don't match this target), and GDB's internal cache (wrong cache | |
1914 | for this target). */ | |
1915 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) | |
b6591e8b | 1916 | != len) |
578d3588 | 1917 | memory_error (TARGET_XFER_E_IO, addr); |
b6591e8b AC |
1918 | } |
1919 | ||
1920 | ULONGEST | |
5d502164 MS |
1921 | get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr, |
1922 | int len, enum bfd_endian byte_order) | |
b6591e8b | 1923 | { |
f6519ebc | 1924 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
1925 | |
1926 | gdb_assert (len <= sizeof (buf)); | |
1927 | get_target_memory (ops, addr, buf, len); | |
e17a4113 | 1928 | return extract_unsigned_integer (buf, len, byte_order); |
b6591e8b AC |
1929 | } |
1930 | ||
3db08215 MM |
1931 | /* See target.h. */ |
1932 | ||
d914c394 SS |
1933 | int |
1934 | target_insert_breakpoint (struct gdbarch *gdbarch, | |
1935 | struct bp_target_info *bp_tgt) | |
1936 | { | |
1937 | if (!may_insert_breakpoints) | |
1938 | { | |
1939 | warning (_("May not insert breakpoints")); | |
1940 | return 1; | |
1941 | } | |
1942 | ||
6b84065d TT |
1943 | return current_target.to_insert_breakpoint (¤t_target, |
1944 | gdbarch, bp_tgt); | |
d914c394 SS |
1945 | } |
1946 | ||
3db08215 MM |
1947 | /* See target.h. */ |
1948 | ||
d914c394 | 1949 | int |
6b84065d TT |
1950 | target_remove_breakpoint (struct gdbarch *gdbarch, |
1951 | struct bp_target_info *bp_tgt) | |
d914c394 SS |
1952 | { |
1953 | /* This is kind of a weird case to handle, but the permission might | |
1954 | have been changed after breakpoints were inserted - in which case | |
1955 | we should just take the user literally and assume that any | |
1956 | breakpoints should be left in place. */ | |
1957 | if (!may_insert_breakpoints) | |
1958 | { | |
1959 | warning (_("May not remove breakpoints")); | |
1960 | return 1; | |
1961 | } | |
1962 | ||
6b84065d TT |
1963 | return current_target.to_remove_breakpoint (¤t_target, |
1964 | gdbarch, bp_tgt); | |
d914c394 SS |
1965 | } |
1966 | ||
c906108c | 1967 | static void |
fba45db2 | 1968 | target_info (char *args, int from_tty) |
c906108c SS |
1969 | { |
1970 | struct target_ops *t; | |
c906108c | 1971 | int has_all_mem = 0; |
c5aa993b | 1972 | |
c906108c | 1973 | if (symfile_objfile != NULL) |
4262abfb JK |
1974 | printf_unfiltered (_("Symbols from \"%s\".\n"), |
1975 | objfile_name (symfile_objfile)); | |
c906108c | 1976 | |
258b763a | 1977 | for (t = target_stack; t != NULL; t = t->beneath) |
c906108c | 1978 | { |
c35b1492 | 1979 | if (!(*t->to_has_memory) (t)) |
c906108c SS |
1980 | continue; |
1981 | ||
c5aa993b | 1982 | if ((int) (t->to_stratum) <= (int) dummy_stratum) |
c906108c SS |
1983 | continue; |
1984 | if (has_all_mem) | |
3e43a32a MS |
1985 | printf_unfiltered (_("\tWhile running this, " |
1986 | "GDB does not access memory from...\n")); | |
c5aa993b JM |
1987 | printf_unfiltered ("%s:\n", t->to_longname); |
1988 | (t->to_files_info) (t); | |
c35b1492 | 1989 | has_all_mem = (*t->to_has_all_memory) (t); |
c906108c SS |
1990 | } |
1991 | } | |
1992 | ||
fd79ecee DJ |
1993 | /* This function is called before any new inferior is created, e.g. |
1994 | by running a program, attaching, or connecting to a target. | |
1995 | It cleans up any state from previous invocations which might | |
1996 | change between runs. This is a subset of what target_preopen | |
1997 | resets (things which might change between targets). */ | |
1998 | ||
1999 | void | |
2000 | target_pre_inferior (int from_tty) | |
2001 | { | |
c378eb4e | 2002 | /* Clear out solib state. Otherwise the solib state of the previous |
b9db4ced | 2003 | inferior might have survived and is entirely wrong for the new |
c378eb4e | 2004 | target. This has been observed on GNU/Linux using glibc 2.3. How |
b9db4ced UW |
2005 | to reproduce: |
2006 | ||
2007 | bash$ ./foo& | |
2008 | [1] 4711 | |
2009 | bash$ ./foo& | |
2010 | [1] 4712 | |
2011 | bash$ gdb ./foo | |
2012 | [...] | |
2013 | (gdb) attach 4711 | |
2014 | (gdb) detach | |
2015 | (gdb) attach 4712 | |
2016 | Cannot access memory at address 0xdeadbeef | |
2017 | */ | |
b9db4ced | 2018 | |
50c71eaf PA |
2019 | /* In some OSs, the shared library list is the same/global/shared |
2020 | across inferiors. If code is shared between processes, so are | |
2021 | memory regions and features. */ | |
f5656ead | 2022 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
50c71eaf PA |
2023 | { |
2024 | no_shared_libraries (NULL, from_tty); | |
2025 | ||
2026 | invalidate_target_mem_regions (); | |
424163ea | 2027 | |
50c71eaf PA |
2028 | target_clear_description (); |
2029 | } | |
8ffcbaaf YQ |
2030 | |
2031 | agent_capability_invalidate (); | |
fd79ecee DJ |
2032 | } |
2033 | ||
b8fa0bfa PA |
2034 | /* Callback for iterate_over_inferiors. Gets rid of the given |
2035 | inferior. */ | |
2036 | ||
2037 | static int | |
2038 | dispose_inferior (struct inferior *inf, void *args) | |
2039 | { | |
2040 | struct thread_info *thread; | |
2041 | ||
2042 | thread = any_thread_of_process (inf->pid); | |
2043 | if (thread) | |
2044 | { | |
2045 | switch_to_thread (thread->ptid); | |
2046 | ||
2047 | /* Core inferiors actually should be detached, not killed. */ | |
2048 | if (target_has_execution) | |
2049 | target_kill (); | |
2050 | else | |
2051 | target_detach (NULL, 0); | |
2052 | } | |
2053 | ||
2054 | return 0; | |
2055 | } | |
2056 | ||
c906108c SS |
2057 | /* This is to be called by the open routine before it does |
2058 | anything. */ | |
2059 | ||
2060 | void | |
fba45db2 | 2061 | target_preopen (int from_tty) |
c906108c | 2062 | { |
c5aa993b | 2063 | dont_repeat (); |
c906108c | 2064 | |
b8fa0bfa | 2065 | if (have_inferiors ()) |
c5aa993b | 2066 | { |
adf40b2e | 2067 | if (!from_tty |
b8fa0bfa PA |
2068 | || !have_live_inferiors () |
2069 | || query (_("A program is being debugged already. Kill it? "))) | |
2070 | iterate_over_inferiors (dispose_inferior, NULL); | |
c906108c | 2071 | else |
8a3fe4f8 | 2072 | error (_("Program not killed.")); |
c906108c SS |
2073 | } |
2074 | ||
2075 | /* Calling target_kill may remove the target from the stack. But if | |
2076 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
2077 | /* Leave the exec target, though. The user may be switching from a |
2078 | live process to a core of the same program. */ | |
460014f5 | 2079 | pop_all_targets_above (file_stratum); |
fd79ecee DJ |
2080 | |
2081 | target_pre_inferior (from_tty); | |
c906108c SS |
2082 | } |
2083 | ||
2084 | /* Detach a target after doing deferred register stores. */ | |
2085 | ||
2086 | void | |
52554a0e | 2087 | target_detach (const char *args, int from_tty) |
c906108c | 2088 | { |
136d6dae VP |
2089 | struct target_ops* t; |
2090 | ||
f5656ead | 2091 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
2092 | /* Don't remove global breakpoints here. They're removed on |
2093 | disconnection from the target. */ | |
2094 | ; | |
2095 | else | |
2096 | /* If we're in breakpoints-always-inserted mode, have to remove | |
2097 | them before detaching. */ | |
dfd4cc63 | 2098 | remove_breakpoints_pid (ptid_get_pid (inferior_ptid)); |
74960c60 | 2099 | |
24291992 PA |
2100 | prepare_for_detach (); |
2101 | ||
09da0d0a TT |
2102 | current_target.to_detach (¤t_target, args, from_tty); |
2103 | if (targetdebug) | |
2104 | fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n", | |
2105 | args, from_tty); | |
c906108c SS |
2106 | } |
2107 | ||
6ad8ae5c | 2108 | void |
fee354ee | 2109 | target_disconnect (const char *args, int from_tty) |
6ad8ae5c | 2110 | { |
50c71eaf PA |
2111 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
2112 | are global across processes, we have to remove them before | |
2113 | disconnecting. */ | |
74960c60 VP |
2114 | remove_breakpoints (); |
2115 | ||
86a0854a TT |
2116 | if (targetdebug) |
2117 | fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n", | |
2118 | args, from_tty); | |
2119 | current_target.to_disconnect (¤t_target, args, from_tty); | |
6ad8ae5c DJ |
2120 | } |
2121 | ||
117de6a9 | 2122 | ptid_t |
47608cb1 | 2123 | target_wait (ptid_t ptid, struct target_waitstatus *status, int options) |
117de6a9 PA |
2124 | { |
2125 | struct target_ops *t; | |
6b84065d TT |
2126 | ptid_t retval = (current_target.to_wait) (¤t_target, ptid, |
2127 | status, options); | |
117de6a9 | 2128 | |
6b84065d | 2129 | if (targetdebug) |
117de6a9 | 2130 | { |
6b84065d TT |
2131 | char *status_string; |
2132 | char *options_string; | |
117de6a9 | 2133 | |
6b84065d TT |
2134 | status_string = target_waitstatus_to_string (status); |
2135 | options_string = target_options_to_string (options); | |
2136 | fprintf_unfiltered (gdb_stdlog, | |
2137 | "target_wait (%d, status, options={%s})" | |
2138 | " = %d, %s\n", | |
2139 | ptid_get_pid (ptid), options_string, | |
2140 | ptid_get_pid (retval), status_string); | |
2141 | xfree (status_string); | |
2142 | xfree (options_string); | |
117de6a9 PA |
2143 | } |
2144 | ||
6b84065d | 2145 | return retval; |
117de6a9 PA |
2146 | } |
2147 | ||
2148 | char * | |
2149 | target_pid_to_str (ptid_t ptid) | |
2150 | { | |
770234d3 | 2151 | return (*current_target.to_pid_to_str) (¤t_target, ptid); |
117de6a9 PA |
2152 | } |
2153 | ||
4694da01 TT |
2154 | char * |
2155 | target_thread_name (struct thread_info *info) | |
2156 | { | |
825828fc | 2157 | return current_target.to_thread_name (¤t_target, info); |
4694da01 TT |
2158 | } |
2159 | ||
e1ac3328 | 2160 | void |
2ea28649 | 2161 | target_resume (ptid_t ptid, int step, enum gdb_signal signal) |
e1ac3328 | 2162 | { |
28439f5e PA |
2163 | struct target_ops *t; |
2164 | ||
4e5d721f | 2165 | target_dcache_invalidate (); |
28439f5e | 2166 | |
6b84065d TT |
2167 | current_target.to_resume (¤t_target, ptid, step, signal); |
2168 | if (targetdebug) | |
2169 | fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n", | |
2170 | ptid_get_pid (ptid), | |
2171 | step ? "step" : "continue", | |
2172 | gdb_signal_to_name (signal)); | |
28439f5e | 2173 | |
6b84065d | 2174 | registers_changed_ptid (ptid); |
251bde03 PA |
2175 | /* We only set the internal executing state here. The user/frontend |
2176 | running state is set at a higher level. */ | |
6b84065d | 2177 | set_executing (ptid, 1); |
6b84065d | 2178 | clear_inline_frame_state (ptid); |
e1ac3328 | 2179 | } |
2455069d UW |
2180 | |
2181 | void | |
2182 | target_pass_signals (int numsigs, unsigned char *pass_signals) | |
2183 | { | |
035cad7f | 2184 | if (targetdebug) |
2455069d | 2185 | { |
035cad7f | 2186 | int i; |
2455069d | 2187 | |
035cad7f TT |
2188 | fprintf_unfiltered (gdb_stdlog, "target_pass_signals (%d, {", |
2189 | numsigs); | |
2455069d | 2190 | |
035cad7f TT |
2191 | for (i = 0; i < numsigs; i++) |
2192 | if (pass_signals[i]) | |
2193 | fprintf_unfiltered (gdb_stdlog, " %s", | |
2194 | gdb_signal_to_name (i)); | |
2455069d | 2195 | |
035cad7f | 2196 | fprintf_unfiltered (gdb_stdlog, " })\n"); |
2455069d | 2197 | } |
035cad7f TT |
2198 | |
2199 | (*current_target.to_pass_signals) (¤t_target, numsigs, pass_signals); | |
2455069d UW |
2200 | } |
2201 | ||
9b224c5e PA |
2202 | void |
2203 | target_program_signals (int numsigs, unsigned char *program_signals) | |
2204 | { | |
7d4f8efa | 2205 | if (targetdebug) |
9b224c5e | 2206 | { |
7d4f8efa | 2207 | int i; |
9b224c5e | 2208 | |
7d4f8efa TT |
2209 | fprintf_unfiltered (gdb_stdlog, "target_program_signals (%d, {", |
2210 | numsigs); | |
9b224c5e | 2211 | |
7d4f8efa TT |
2212 | for (i = 0; i < numsigs; i++) |
2213 | if (program_signals[i]) | |
2214 | fprintf_unfiltered (gdb_stdlog, " %s", | |
2215 | gdb_signal_to_name (i)); | |
9b224c5e | 2216 | |
7d4f8efa | 2217 | fprintf_unfiltered (gdb_stdlog, " })\n"); |
9b224c5e | 2218 | } |
7d4f8efa TT |
2219 | |
2220 | (*current_target.to_program_signals) (¤t_target, | |
2221 | numsigs, program_signals); | |
9b224c5e PA |
2222 | } |
2223 | ||
098dba18 TT |
2224 | static int |
2225 | default_follow_fork (struct target_ops *self, int follow_child, | |
2226 | int detach_fork) | |
2227 | { | |
2228 | /* Some target returned a fork event, but did not know how to follow it. */ | |
2229 | internal_error (__FILE__, __LINE__, | |
2230 | _("could not find a target to follow fork")); | |
2231 | } | |
2232 | ||
ee057212 DJ |
2233 | /* Look through the list of possible targets for a target that can |
2234 | follow forks. */ | |
2235 | ||
2236 | int | |
07107ca6 | 2237 | target_follow_fork (int follow_child, int detach_fork) |
ee057212 | 2238 | { |
098dba18 TT |
2239 | int retval = current_target.to_follow_fork (¤t_target, |
2240 | follow_child, detach_fork); | |
ee057212 | 2241 | |
098dba18 TT |
2242 | if (targetdebug) |
2243 | fprintf_unfiltered (gdb_stdlog, | |
2244 | "target_follow_fork (%d, %d) = %d\n", | |
2245 | follow_child, detach_fork, retval); | |
2246 | return retval; | |
ee057212 DJ |
2247 | } |
2248 | ||
8d657035 TT |
2249 | static void |
2250 | default_mourn_inferior (struct target_ops *self) | |
2251 | { | |
2252 | internal_error (__FILE__, __LINE__, | |
2253 | _("could not find a target to follow mourn inferior")); | |
2254 | } | |
2255 | ||
136d6dae VP |
2256 | void |
2257 | target_mourn_inferior (void) | |
2258 | { | |
8d657035 TT |
2259 | current_target.to_mourn_inferior (¤t_target); |
2260 | if (targetdebug) | |
2261 | fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n"); | |
136d6dae | 2262 | |
8d657035 TT |
2263 | /* We no longer need to keep handles on any of the object files. |
2264 | Make sure to release them to avoid unnecessarily locking any | |
2265 | of them while we're not actually debugging. */ | |
2266 | bfd_cache_close_all (); | |
136d6dae VP |
2267 | } |
2268 | ||
424163ea DJ |
2269 | /* Look for a target which can describe architectural features, starting |
2270 | from TARGET. If we find one, return its description. */ | |
2271 | ||
2272 | const struct target_desc * | |
2273 | target_read_description (struct target_ops *target) | |
2274 | { | |
2117c711 | 2275 | return target->to_read_description (target); |
424163ea DJ |
2276 | } |
2277 | ||
58a5184e | 2278 | /* This implements a basic search of memory, reading target memory and |
08388c79 DE |
2279 | performing the search here (as opposed to performing the search in on the |
2280 | target side with, for example, gdbserver). */ | |
2281 | ||
2282 | int | |
2283 | simple_search_memory (struct target_ops *ops, | |
2284 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2285 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2286 | CORE_ADDR *found_addrp) | |
2287 | { | |
2288 | /* NOTE: also defined in find.c testcase. */ | |
2289 | #define SEARCH_CHUNK_SIZE 16000 | |
2290 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
2291 | /* Buffer to hold memory contents for searching. */ | |
2292 | gdb_byte *search_buf; | |
2293 | unsigned search_buf_size; | |
2294 | struct cleanup *old_cleanups; | |
2295 | ||
2296 | search_buf_size = chunk_size + pattern_len - 1; | |
2297 | ||
2298 | /* No point in trying to allocate a buffer larger than the search space. */ | |
2299 | if (search_space_len < search_buf_size) | |
2300 | search_buf_size = search_space_len; | |
2301 | ||
2302 | search_buf = malloc (search_buf_size); | |
2303 | if (search_buf == NULL) | |
5e1471f5 | 2304 | error (_("Unable to allocate memory to perform the search.")); |
08388c79 DE |
2305 | old_cleanups = make_cleanup (free_current_contents, &search_buf); |
2306 | ||
2307 | /* Prime the search buffer. */ | |
2308 | ||
2309 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2310 | search_buf, start_addr, search_buf_size) != search_buf_size) | |
2311 | { | |
b3dc46ff AB |
2312 | warning (_("Unable to access %s bytes of target " |
2313 | "memory at %s, halting search."), | |
2314 | pulongest (search_buf_size), hex_string (start_addr)); | |
08388c79 DE |
2315 | do_cleanups (old_cleanups); |
2316 | return -1; | |
2317 | } | |
2318 | ||
2319 | /* Perform the search. | |
2320 | ||
2321 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
2322 | When we've scanned N bytes we copy the trailing bytes to the start and | |
2323 | read in another N bytes. */ | |
2324 | ||
2325 | while (search_space_len >= pattern_len) | |
2326 | { | |
2327 | gdb_byte *found_ptr; | |
2328 | unsigned nr_search_bytes = min (search_space_len, search_buf_size); | |
2329 | ||
2330 | found_ptr = memmem (search_buf, nr_search_bytes, | |
2331 | pattern, pattern_len); | |
2332 | ||
2333 | if (found_ptr != NULL) | |
2334 | { | |
2335 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
5d502164 | 2336 | |
08388c79 DE |
2337 | *found_addrp = found_addr; |
2338 | do_cleanups (old_cleanups); | |
2339 | return 1; | |
2340 | } | |
2341 | ||
2342 | /* Not found in this chunk, skip to next chunk. */ | |
2343 | ||
2344 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
2345 | if (search_space_len >= chunk_size) | |
2346 | search_space_len -= chunk_size; | |
2347 | else | |
2348 | search_space_len = 0; | |
2349 | ||
2350 | if (search_space_len >= pattern_len) | |
2351 | { | |
2352 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 2353 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
2354 | int nr_to_read; |
2355 | ||
2356 | /* Copy the trailing part of the previous iteration to the front | |
2357 | of the buffer for the next iteration. */ | |
2358 | gdb_assert (keep_len == pattern_len - 1); | |
2359 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
2360 | ||
2361 | nr_to_read = min (search_space_len - keep_len, chunk_size); | |
2362 | ||
2363 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2364 | search_buf + keep_len, read_addr, | |
2365 | nr_to_read) != nr_to_read) | |
2366 | { | |
b3dc46ff | 2367 | warning (_("Unable to access %s bytes of target " |
9b20d036 | 2368 | "memory at %s, halting search."), |
b3dc46ff | 2369 | plongest (nr_to_read), |
08388c79 DE |
2370 | hex_string (read_addr)); |
2371 | do_cleanups (old_cleanups); | |
2372 | return -1; | |
2373 | } | |
2374 | ||
2375 | start_addr += chunk_size; | |
2376 | } | |
2377 | } | |
2378 | ||
2379 | /* Not found. */ | |
2380 | ||
2381 | do_cleanups (old_cleanups); | |
2382 | return 0; | |
2383 | } | |
2384 | ||
58a5184e TT |
2385 | /* Default implementation of memory-searching. */ |
2386 | ||
2387 | static int | |
2388 | default_search_memory (struct target_ops *self, | |
2389 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2390 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2391 | CORE_ADDR *found_addrp) | |
2392 | { | |
2393 | /* Start over from the top of the target stack. */ | |
2394 | return simple_search_memory (current_target.beneath, | |
2395 | start_addr, search_space_len, | |
2396 | pattern, pattern_len, found_addrp); | |
2397 | } | |
2398 | ||
08388c79 DE |
2399 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the |
2400 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2401 | ||
2402 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2403 | requiring halting of the search (e.g. memory read error). | |
2404 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2405 | ||
2406 | int | |
2407 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2408 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2409 | CORE_ADDR *found_addrp) | |
2410 | { | |
08388c79 DE |
2411 | int found; |
2412 | ||
08388c79 DE |
2413 | if (targetdebug) |
2414 | fprintf_unfiltered (gdb_stdlog, "target_search_memory (%s, ...)\n", | |
2415 | hex_string (start_addr)); | |
2416 | ||
58a5184e TT |
2417 | found = current_target.to_search_memory (¤t_target, start_addr, |
2418 | search_space_len, | |
2419 | pattern, pattern_len, found_addrp); | |
08388c79 DE |
2420 | |
2421 | if (targetdebug) | |
2422 | fprintf_unfiltered (gdb_stdlog, " = %d\n", found); | |
2423 | ||
2424 | return found; | |
2425 | } | |
2426 | ||
8edfe269 DJ |
2427 | /* Look through the currently pushed targets. If none of them will |
2428 | be able to restart the currently running process, issue an error | |
2429 | message. */ | |
2430 | ||
2431 | void | |
2432 | target_require_runnable (void) | |
2433 | { | |
2434 | struct target_ops *t; | |
2435 | ||
2436 | for (t = target_stack; t != NULL; t = t->beneath) | |
2437 | { | |
2438 | /* If this target knows how to create a new program, then | |
2439 | assume we will still be able to after killing the current | |
2440 | one. Either killing and mourning will not pop T, or else | |
2441 | find_default_run_target will find it again. */ | |
2442 | if (t->to_create_inferior != NULL) | |
2443 | return; | |
2444 | ||
548740d6 | 2445 | /* Do not worry about targets at certain strata that can not |
8edfe269 DJ |
2446 | create inferiors. Assume they will be pushed again if |
2447 | necessary, and continue to the process_stratum. */ | |
85e747d2 | 2448 | if (t->to_stratum == thread_stratum |
548740d6 | 2449 | || t->to_stratum == record_stratum |
85e747d2 | 2450 | || t->to_stratum == arch_stratum) |
8edfe269 DJ |
2451 | continue; |
2452 | ||
3e43a32a MS |
2453 | error (_("The \"%s\" target does not support \"run\". " |
2454 | "Try \"help target\" or \"continue\"."), | |
8edfe269 DJ |
2455 | t->to_shortname); |
2456 | } | |
2457 | ||
2458 | /* This function is only called if the target is running. In that | |
2459 | case there should have been a process_stratum target and it | |
c378eb4e | 2460 | should either know how to create inferiors, or not... */ |
9b20d036 | 2461 | internal_error (__FILE__, __LINE__, _("No targets found")); |
8edfe269 DJ |
2462 | } |
2463 | ||
6a3cb8e8 PA |
2464 | /* Whether GDB is allowed to fall back to the default run target for |
2465 | "run", "attach", etc. when no target is connected yet. */ | |
2466 | static int auto_connect_native_target = 1; | |
2467 | ||
2468 | static void | |
2469 | show_auto_connect_native_target (struct ui_file *file, int from_tty, | |
2470 | struct cmd_list_element *c, const char *value) | |
2471 | { | |
2472 | fprintf_filtered (file, | |
2473 | _("Whether GDB may automatically connect to the " | |
2474 | "native target is %s.\n"), | |
2475 | value); | |
2476 | } | |
2477 | ||
c906108c SS |
2478 | /* Look through the list of possible targets for a target that can |
2479 | execute a run or attach command without any other data. This is | |
2480 | used to locate the default process stratum. | |
2481 | ||
5f667f2d PA |
2482 | If DO_MESG is not NULL, the result is always valid (error() is |
2483 | called for errors); else, return NULL on error. */ | |
c906108c SS |
2484 | |
2485 | static struct target_ops * | |
fba45db2 | 2486 | find_default_run_target (char *do_mesg) |
c906108c | 2487 | { |
c906108c | 2488 | struct target_ops *runable = NULL; |
c906108c | 2489 | |
6a3cb8e8 | 2490 | if (auto_connect_native_target) |
c906108c | 2491 | { |
6a3cb8e8 PA |
2492 | struct target_ops **t; |
2493 | int count = 0; | |
2494 | ||
2495 | for (t = target_structs; t < target_structs + target_struct_size; | |
2496 | ++t) | |
c906108c | 2497 | { |
6a3cb8e8 PA |
2498 | if ((*t)->to_can_run != delegate_can_run && target_can_run (*t)) |
2499 | { | |
2500 | runable = *t; | |
2501 | ++count; | |
2502 | } | |
c906108c | 2503 | } |
6a3cb8e8 PA |
2504 | |
2505 | if (count != 1) | |
2506 | runable = NULL; | |
c906108c SS |
2507 | } |
2508 | ||
6a3cb8e8 | 2509 | if (runable == NULL) |
5f667f2d PA |
2510 | { |
2511 | if (do_mesg) | |
2512 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
2513 | else | |
2514 | return NULL; | |
2515 | } | |
c906108c SS |
2516 | |
2517 | return runable; | |
2518 | } | |
2519 | ||
b3ccfe11 | 2520 | /* See target.h. */ |
c906108c | 2521 | |
b3ccfe11 TT |
2522 | struct target_ops * |
2523 | find_attach_target (void) | |
c906108c SS |
2524 | { |
2525 | struct target_ops *t; | |
2526 | ||
b3ccfe11 TT |
2527 | /* If a target on the current stack can attach, use it. */ |
2528 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2529 | { | |
2530 | if (t->to_attach != NULL) | |
2531 | break; | |
2532 | } | |
c906108c | 2533 | |
b3ccfe11 TT |
2534 | /* Otherwise, use the default run target for attaching. */ |
2535 | if (t == NULL) | |
2536 | t = find_default_run_target ("attach"); | |
b84876c2 | 2537 | |
b3ccfe11 | 2538 | return t; |
b84876c2 PA |
2539 | } |
2540 | ||
b3ccfe11 | 2541 | /* See target.h. */ |
b84876c2 | 2542 | |
b3ccfe11 TT |
2543 | struct target_ops * |
2544 | find_run_target (void) | |
9908b566 VP |
2545 | { |
2546 | struct target_ops *t; | |
2547 | ||
b3ccfe11 TT |
2548 | /* If a target on the current stack can attach, use it. */ |
2549 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2550 | { | |
2551 | if (t->to_create_inferior != NULL) | |
2552 | break; | |
2553 | } | |
5d502164 | 2554 | |
b3ccfe11 TT |
2555 | /* Otherwise, use the default run target. */ |
2556 | if (t == NULL) | |
2557 | t = find_default_run_target ("run"); | |
9908b566 | 2558 | |
b3ccfe11 | 2559 | return t; |
9908b566 VP |
2560 | } |
2561 | ||
145b16a9 UW |
2562 | /* Implement the "info proc" command. */ |
2563 | ||
451b7c33 | 2564 | int |
7bc112c1 | 2565 | target_info_proc (const char *args, enum info_proc_what what) |
145b16a9 UW |
2566 | { |
2567 | struct target_ops *t; | |
2568 | ||
2569 | /* If we're already connected to something that can get us OS | |
2570 | related data, use it. Otherwise, try using the native | |
2571 | target. */ | |
2572 | if (current_target.to_stratum >= process_stratum) | |
2573 | t = current_target.beneath; | |
2574 | else | |
2575 | t = find_default_run_target (NULL); | |
2576 | ||
2577 | for (; t != NULL; t = t->beneath) | |
2578 | { | |
2579 | if (t->to_info_proc != NULL) | |
2580 | { | |
2581 | t->to_info_proc (t, args, what); | |
2582 | ||
2583 | if (targetdebug) | |
2584 | fprintf_unfiltered (gdb_stdlog, | |
2585 | "target_info_proc (\"%s\", %d)\n", args, what); | |
2586 | ||
451b7c33 | 2587 | return 1; |
145b16a9 UW |
2588 | } |
2589 | } | |
2590 | ||
451b7c33 | 2591 | return 0; |
145b16a9 UW |
2592 | } |
2593 | ||
03583c20 | 2594 | static int |
2bfc0540 | 2595 | find_default_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
2596 | { |
2597 | struct target_ops *t; | |
2598 | ||
2599 | t = find_default_run_target (NULL); | |
2600 | if (t && t->to_supports_disable_randomization) | |
2bfc0540 | 2601 | return (t->to_supports_disable_randomization) (t); |
03583c20 UW |
2602 | return 0; |
2603 | } | |
2604 | ||
2605 | int | |
2606 | target_supports_disable_randomization (void) | |
2607 | { | |
2608 | struct target_ops *t; | |
2609 | ||
2610 | for (t = ¤t_target; t != NULL; t = t->beneath) | |
2611 | if (t->to_supports_disable_randomization) | |
2bfc0540 | 2612 | return t->to_supports_disable_randomization (t); |
03583c20 UW |
2613 | |
2614 | return 0; | |
2615 | } | |
9908b566 | 2616 | |
07e059b5 VP |
2617 | char * |
2618 | target_get_osdata (const char *type) | |
2619 | { | |
07e059b5 VP |
2620 | struct target_ops *t; |
2621 | ||
739ef7fb PA |
2622 | /* If we're already connected to something that can get us OS |
2623 | related data, use it. Otherwise, try using the native | |
2624 | target. */ | |
2625 | if (current_target.to_stratum >= process_stratum) | |
6d097e65 | 2626 | t = current_target.beneath; |
739ef7fb PA |
2627 | else |
2628 | t = find_default_run_target ("get OS data"); | |
07e059b5 VP |
2629 | |
2630 | if (!t) | |
2631 | return NULL; | |
2632 | ||
6d097e65 | 2633 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
2634 | } |
2635 | ||
8eaff7cd TT |
2636 | static struct address_space * |
2637 | default_thread_address_space (struct target_ops *self, ptid_t ptid) | |
6c95b8df PA |
2638 | { |
2639 | struct inferior *inf; | |
6c95b8df PA |
2640 | |
2641 | /* Fall-back to the "main" address space of the inferior. */ | |
2642 | inf = find_inferior_pid (ptid_get_pid (ptid)); | |
2643 | ||
2644 | if (inf == NULL || inf->aspace == NULL) | |
3e43a32a | 2645 | internal_error (__FILE__, __LINE__, |
9b20d036 MS |
2646 | _("Can't determine the current " |
2647 | "address space of thread %s\n"), | |
6c95b8df PA |
2648 | target_pid_to_str (ptid)); |
2649 | ||
2650 | return inf->aspace; | |
2651 | } | |
2652 | ||
8eaff7cd TT |
2653 | /* Determine the current address space of thread PTID. */ |
2654 | ||
2655 | struct address_space * | |
2656 | target_thread_address_space (ptid_t ptid) | |
2657 | { | |
2658 | struct address_space *aspace; | |
2659 | ||
2660 | aspace = current_target.to_thread_address_space (¤t_target, ptid); | |
2661 | gdb_assert (aspace != NULL); | |
2662 | ||
2663 | if (targetdebug) | |
2664 | fprintf_unfiltered (gdb_stdlog, | |
2665 | "target_thread_address_space (%s) = %d\n", | |
2666 | target_pid_to_str (ptid), | |
2667 | address_space_num (aspace)); | |
2668 | ||
2669 | return aspace; | |
2670 | } | |
2671 | ||
7313baad UW |
2672 | |
2673 | /* Target file operations. */ | |
2674 | ||
2675 | static struct target_ops * | |
2676 | default_fileio_target (void) | |
2677 | { | |
2678 | /* If we're already connected to something that can perform | |
2679 | file I/O, use it. Otherwise, try using the native target. */ | |
2680 | if (current_target.to_stratum >= process_stratum) | |
2681 | return current_target.beneath; | |
2682 | else | |
2683 | return find_default_run_target ("file I/O"); | |
2684 | } | |
2685 | ||
2686 | /* Open FILENAME on the target, using FLAGS and MODE. Return a | |
2687 | target file descriptor, or -1 if an error occurs (and set | |
2688 | *TARGET_ERRNO). */ | |
2689 | int | |
2690 | target_fileio_open (const char *filename, int flags, int mode, | |
2691 | int *target_errno) | |
2692 | { | |
2693 | struct target_ops *t; | |
2694 | ||
2695 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2696 | { | |
2697 | if (t->to_fileio_open != NULL) | |
2698 | { | |
cd897586 | 2699 | int fd = t->to_fileio_open (t, filename, flags, mode, target_errno); |
7313baad UW |
2700 | |
2701 | if (targetdebug) | |
2702 | fprintf_unfiltered (gdb_stdlog, | |
2703 | "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n", | |
2704 | filename, flags, mode, | |
2705 | fd, fd != -1 ? 0 : *target_errno); | |
2706 | return fd; | |
2707 | } | |
2708 | } | |
2709 | ||
2710 | *target_errno = FILEIO_ENOSYS; | |
2711 | return -1; | |
2712 | } | |
2713 | ||
2714 | /* Write up to LEN bytes from WRITE_BUF to FD on the target. | |
2715 | Return the number of bytes written, or -1 if an error occurs | |
2716 | (and set *TARGET_ERRNO). */ | |
2717 | int | |
2718 | target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
2719 | ULONGEST offset, int *target_errno) | |
2720 | { | |
2721 | struct target_ops *t; | |
2722 | ||
2723 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2724 | { | |
2725 | if (t->to_fileio_pwrite != NULL) | |
2726 | { | |
0d866f62 | 2727 | int ret = t->to_fileio_pwrite (t, fd, write_buf, len, offset, |
7313baad UW |
2728 | target_errno); |
2729 | ||
2730 | if (targetdebug) | |
2731 | fprintf_unfiltered (gdb_stdlog, | |
a71b5a38 | 2732 | "target_fileio_pwrite (%d,...,%d,%s) " |
7313baad | 2733 | "= %d (%d)\n", |
a71b5a38 | 2734 | fd, len, pulongest (offset), |
7313baad UW |
2735 | ret, ret != -1 ? 0 : *target_errno); |
2736 | return ret; | |
2737 | } | |
2738 | } | |
2739 | ||
2740 | *target_errno = FILEIO_ENOSYS; | |
2741 | return -1; | |
2742 | } | |
2743 | ||
2744 | /* Read up to LEN bytes FD on the target into READ_BUF. | |
2745 | Return the number of bytes read, or -1 if an error occurs | |
2746 | (and set *TARGET_ERRNO). */ | |
2747 | int | |
2748 | target_fileio_pread (int fd, gdb_byte *read_buf, int len, | |
2749 | ULONGEST offset, int *target_errno) | |
2750 | { | |
2751 | struct target_ops *t; | |
2752 | ||
2753 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2754 | { | |
2755 | if (t->to_fileio_pread != NULL) | |
2756 | { | |
a3be983c | 2757 | int ret = t->to_fileio_pread (t, fd, read_buf, len, offset, |
7313baad UW |
2758 | target_errno); |
2759 | ||
2760 | if (targetdebug) | |
2761 | fprintf_unfiltered (gdb_stdlog, | |
a71b5a38 | 2762 | "target_fileio_pread (%d,...,%d,%s) " |
7313baad | 2763 | "= %d (%d)\n", |
a71b5a38 | 2764 | fd, len, pulongest (offset), |
7313baad UW |
2765 | ret, ret != -1 ? 0 : *target_errno); |
2766 | return ret; | |
2767 | } | |
2768 | } | |
2769 | ||
2770 | *target_errno = FILEIO_ENOSYS; | |
2771 | return -1; | |
2772 | } | |
2773 | ||
2774 | /* Close FD on the target. Return 0, or -1 if an error occurs | |
2775 | (and set *TARGET_ERRNO). */ | |
2776 | int | |
2777 | target_fileio_close (int fd, int *target_errno) | |
2778 | { | |
2779 | struct target_ops *t; | |
2780 | ||
2781 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2782 | { | |
2783 | if (t->to_fileio_close != NULL) | |
2784 | { | |
df39ea25 | 2785 | int ret = t->to_fileio_close (t, fd, target_errno); |
7313baad UW |
2786 | |
2787 | if (targetdebug) | |
2788 | fprintf_unfiltered (gdb_stdlog, | |
2789 | "target_fileio_close (%d) = %d (%d)\n", | |
2790 | fd, ret, ret != -1 ? 0 : *target_errno); | |
2791 | return ret; | |
2792 | } | |
2793 | } | |
2794 | ||
2795 | *target_errno = FILEIO_ENOSYS; | |
2796 | return -1; | |
2797 | } | |
2798 | ||
2799 | /* Unlink FILENAME on the target. Return 0, or -1 if an error | |
2800 | occurs (and set *TARGET_ERRNO). */ | |
2801 | int | |
2802 | target_fileio_unlink (const char *filename, int *target_errno) | |
2803 | { | |
2804 | struct target_ops *t; | |
2805 | ||
2806 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2807 | { | |
2808 | if (t->to_fileio_unlink != NULL) | |
2809 | { | |
dbbca37d | 2810 | int ret = t->to_fileio_unlink (t, filename, target_errno); |
7313baad UW |
2811 | |
2812 | if (targetdebug) | |
2813 | fprintf_unfiltered (gdb_stdlog, | |
2814 | "target_fileio_unlink (%s) = %d (%d)\n", | |
2815 | filename, ret, ret != -1 ? 0 : *target_errno); | |
2816 | return ret; | |
2817 | } | |
2818 | } | |
2819 | ||
2820 | *target_errno = FILEIO_ENOSYS; | |
2821 | return -1; | |
2822 | } | |
2823 | ||
b9e7b9c3 UW |
2824 | /* Read value of symbolic link FILENAME on the target. Return a |
2825 | null-terminated string allocated via xmalloc, or NULL if an error | |
2826 | occurs (and set *TARGET_ERRNO). */ | |
2827 | char * | |
2828 | target_fileio_readlink (const char *filename, int *target_errno) | |
2829 | { | |
2830 | struct target_ops *t; | |
2831 | ||
2832 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2833 | { | |
2834 | if (t->to_fileio_readlink != NULL) | |
2835 | { | |
fab5aa7c | 2836 | char *ret = t->to_fileio_readlink (t, filename, target_errno); |
b9e7b9c3 UW |
2837 | |
2838 | if (targetdebug) | |
2839 | fprintf_unfiltered (gdb_stdlog, | |
2840 | "target_fileio_readlink (%s) = %s (%d)\n", | |
2841 | filename, ret? ret : "(nil)", | |
2842 | ret? 0 : *target_errno); | |
2843 | return ret; | |
2844 | } | |
2845 | } | |
2846 | ||
2847 | *target_errno = FILEIO_ENOSYS; | |
2848 | return NULL; | |
2849 | } | |
2850 | ||
7313baad UW |
2851 | static void |
2852 | target_fileio_close_cleanup (void *opaque) | |
2853 | { | |
2854 | int fd = *(int *) opaque; | |
2855 | int target_errno; | |
2856 | ||
2857 | target_fileio_close (fd, &target_errno); | |
2858 | } | |
2859 | ||
2860 | /* Read target file FILENAME. Store the result in *BUF_P and | |
2861 | return the size of the transferred data. PADDING additional bytes are | |
2862 | available in *BUF_P. This is a helper function for | |
2863 | target_fileio_read_alloc; see the declaration of that function for more | |
2864 | information. */ | |
2865 | ||
2866 | static LONGEST | |
2867 | target_fileio_read_alloc_1 (const char *filename, | |
2868 | gdb_byte **buf_p, int padding) | |
2869 | { | |
2870 | struct cleanup *close_cleanup; | |
2871 | size_t buf_alloc, buf_pos; | |
2872 | gdb_byte *buf; | |
2873 | LONGEST n; | |
2874 | int fd; | |
2875 | int target_errno; | |
2876 | ||
2877 | fd = target_fileio_open (filename, FILEIO_O_RDONLY, 0700, &target_errno); | |
2878 | if (fd == -1) | |
2879 | return -1; | |
2880 | ||
2881 | close_cleanup = make_cleanup (target_fileio_close_cleanup, &fd); | |
2882 | ||
2883 | /* Start by reading up to 4K at a time. The target will throttle | |
2884 | this number down if necessary. */ | |
2885 | buf_alloc = 4096; | |
2886 | buf = xmalloc (buf_alloc); | |
2887 | buf_pos = 0; | |
2888 | while (1) | |
2889 | { | |
2890 | n = target_fileio_pread (fd, &buf[buf_pos], | |
2891 | buf_alloc - buf_pos - padding, buf_pos, | |
2892 | &target_errno); | |
2893 | if (n < 0) | |
2894 | { | |
2895 | /* An error occurred. */ | |
2896 | do_cleanups (close_cleanup); | |
2897 | xfree (buf); | |
2898 | return -1; | |
2899 | } | |
2900 | else if (n == 0) | |
2901 | { | |
2902 | /* Read all there was. */ | |
2903 | do_cleanups (close_cleanup); | |
2904 | if (buf_pos == 0) | |
2905 | xfree (buf); | |
2906 | else | |
2907 | *buf_p = buf; | |
2908 | return buf_pos; | |
2909 | } | |
2910 | ||
2911 | buf_pos += n; | |
2912 | ||
2913 | /* If the buffer is filling up, expand it. */ | |
2914 | if (buf_alloc < buf_pos * 2) | |
2915 | { | |
2916 | buf_alloc *= 2; | |
2917 | buf = xrealloc (buf, buf_alloc); | |
2918 | } | |
2919 | ||
2920 | QUIT; | |
2921 | } | |
2922 | } | |
2923 | ||
2924 | /* Read target file FILENAME. Store the result in *BUF_P and return | |
2925 | the size of the transferred data. See the declaration in "target.h" | |
2926 | function for more information about the return value. */ | |
2927 | ||
2928 | LONGEST | |
2929 | target_fileio_read_alloc (const char *filename, gdb_byte **buf_p) | |
2930 | { | |
2931 | return target_fileio_read_alloc_1 (filename, buf_p, 0); | |
2932 | } | |
2933 | ||
2934 | /* Read target file FILENAME. The result is NUL-terminated and | |
2935 | returned as a string, allocated using xmalloc. If an error occurs | |
2936 | or the transfer is unsupported, NULL is returned. Empty objects | |
2937 | are returned as allocated but empty strings. A warning is issued | |
2938 | if the result contains any embedded NUL bytes. */ | |
2939 | ||
2940 | char * | |
2941 | target_fileio_read_stralloc (const char *filename) | |
2942 | { | |
39086a0e PA |
2943 | gdb_byte *buffer; |
2944 | char *bufstr; | |
7313baad UW |
2945 | LONGEST i, transferred; |
2946 | ||
39086a0e PA |
2947 | transferred = target_fileio_read_alloc_1 (filename, &buffer, 1); |
2948 | bufstr = (char *) buffer; | |
7313baad UW |
2949 | |
2950 | if (transferred < 0) | |
2951 | return NULL; | |
2952 | ||
2953 | if (transferred == 0) | |
2954 | return xstrdup (""); | |
2955 | ||
39086a0e | 2956 | bufstr[transferred] = 0; |
7313baad UW |
2957 | |
2958 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
39086a0e PA |
2959 | for (i = strlen (bufstr); i < transferred; i++) |
2960 | if (bufstr[i] != 0) | |
7313baad UW |
2961 | { |
2962 | warning (_("target file %s " | |
2963 | "contained unexpected null characters"), | |
2964 | filename); | |
2965 | break; | |
2966 | } | |
2967 | ||
39086a0e | 2968 | return bufstr; |
7313baad UW |
2969 | } |
2970 | ||
2971 | ||
e0d24f8d | 2972 | static int |
31568a15 TT |
2973 | default_region_ok_for_hw_watchpoint (struct target_ops *self, |
2974 | CORE_ADDR addr, int len) | |
e0d24f8d | 2975 | { |
f5656ead | 2976 | return (len <= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT); |
ccaa32c7 GS |
2977 | } |
2978 | ||
5009afc5 AS |
2979 | static int |
2980 | default_watchpoint_addr_within_range (struct target_ops *target, | |
2981 | CORE_ADDR addr, | |
2982 | CORE_ADDR start, int length) | |
2983 | { | |
2984 | return addr >= start && addr < start + length; | |
2985 | } | |
2986 | ||
c2250ad1 UW |
2987 | static struct gdbarch * |
2988 | default_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
2989 | { | |
f5656ead | 2990 | return target_gdbarch (); |
c2250ad1 UW |
2991 | } |
2992 | ||
c906108c | 2993 | static int |
555bbdeb TT |
2994 | return_zero (struct target_ops *ignore) |
2995 | { | |
2996 | return 0; | |
2997 | } | |
2998 | ||
2999 | static int | |
3000 | return_zero_has_execution (struct target_ops *ignore, ptid_t ignore2) | |
c906108c SS |
3001 | { |
3002 | return 0; | |
3003 | } | |
3004 | ||
ed9a39eb JM |
3005 | /* |
3006 | * Find the next target down the stack from the specified target. | |
3007 | */ | |
3008 | ||
3009 | struct target_ops * | |
fba45db2 | 3010 | find_target_beneath (struct target_ops *t) |
ed9a39eb | 3011 | { |
258b763a | 3012 | return t->beneath; |
ed9a39eb JM |
3013 | } |
3014 | ||
8b06beed TT |
3015 | /* See target.h. */ |
3016 | ||
3017 | struct target_ops * | |
3018 | find_target_at (enum strata stratum) | |
3019 | { | |
3020 | struct target_ops *t; | |
3021 | ||
3022 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3023 | if (t->to_stratum == stratum) | |
3024 | return t; | |
3025 | ||
3026 | return NULL; | |
3027 | } | |
3028 | ||
c906108c SS |
3029 | \f |
3030 | /* The inferior process has died. Long live the inferior! */ | |
3031 | ||
3032 | void | |
fba45db2 | 3033 | generic_mourn_inferior (void) |
c906108c | 3034 | { |
7f9f62ba | 3035 | ptid_t ptid; |
c906108c | 3036 | |
7f9f62ba | 3037 | ptid = inferior_ptid; |
39f77062 | 3038 | inferior_ptid = null_ptid; |
7f9f62ba | 3039 | |
f59f708a PA |
3040 | /* Mark breakpoints uninserted in case something tries to delete a |
3041 | breakpoint while we delete the inferior's threads (which would | |
3042 | fail, since the inferior is long gone). */ | |
3043 | mark_breakpoints_out (); | |
3044 | ||
7f9f62ba PA |
3045 | if (!ptid_equal (ptid, null_ptid)) |
3046 | { | |
3047 | int pid = ptid_get_pid (ptid); | |
6c95b8df | 3048 | exit_inferior (pid); |
7f9f62ba PA |
3049 | } |
3050 | ||
f59f708a PA |
3051 | /* Note this wipes step-resume breakpoints, so needs to be done |
3052 | after exit_inferior, which ends up referencing the step-resume | |
3053 | breakpoints through clear_thread_inferior_resources. */ | |
c906108c | 3054 | breakpoint_init_inferior (inf_exited); |
f59f708a | 3055 | |
c906108c SS |
3056 | registers_changed (); |
3057 | ||
c906108c SS |
3058 | reopen_exec_file (); |
3059 | reinit_frame_cache (); | |
3060 | ||
9a4105ab AC |
3061 | if (deprecated_detach_hook) |
3062 | deprecated_detach_hook (); | |
c906108c SS |
3063 | } |
3064 | \f | |
fd0a2a6f MK |
3065 | /* Convert a normal process ID to a string. Returns the string in a |
3066 | static buffer. */ | |
c906108c SS |
3067 | |
3068 | char * | |
39f77062 | 3069 | normal_pid_to_str (ptid_t ptid) |
c906108c | 3070 | { |
fd0a2a6f | 3071 | static char buf[32]; |
c906108c | 3072 | |
5fff8fc0 | 3073 | xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid)); |
c906108c SS |
3074 | return buf; |
3075 | } | |
3076 | ||
2c0b251b | 3077 | static char * |
770234d3 | 3078 | default_pid_to_str (struct target_ops *ops, ptid_t ptid) |
117de6a9 PA |
3079 | { |
3080 | return normal_pid_to_str (ptid); | |
3081 | } | |
3082 | ||
9b4eba8e HZ |
3083 | /* Error-catcher for target_find_memory_regions. */ |
3084 | static int | |
2e73927c TT |
3085 | dummy_find_memory_regions (struct target_ops *self, |
3086 | find_memory_region_ftype ignore1, void *ignore2) | |
be4d1333 | 3087 | { |
9b4eba8e | 3088 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3089 | return 0; |
3090 | } | |
3091 | ||
9b4eba8e HZ |
3092 | /* Error-catcher for target_make_corefile_notes. */ |
3093 | static char * | |
fc6691b2 TT |
3094 | dummy_make_corefile_notes (struct target_ops *self, |
3095 | bfd *ignore1, int *ignore2) | |
be4d1333 | 3096 | { |
9b4eba8e | 3097 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3098 | return NULL; |
3099 | } | |
3100 | ||
c906108c SS |
3101 | /* Set up the handful of non-empty slots needed by the dummy target |
3102 | vector. */ | |
3103 | ||
3104 | static void | |
fba45db2 | 3105 | init_dummy_target (void) |
c906108c SS |
3106 | { |
3107 | dummy_target.to_shortname = "None"; | |
3108 | dummy_target.to_longname = "None"; | |
3109 | dummy_target.to_doc = ""; | |
03583c20 UW |
3110 | dummy_target.to_supports_disable_randomization |
3111 | = find_default_supports_disable_randomization; | |
c906108c | 3112 | dummy_target.to_stratum = dummy_stratum; |
555bbdeb TT |
3113 | dummy_target.to_has_all_memory = return_zero; |
3114 | dummy_target.to_has_memory = return_zero; | |
3115 | dummy_target.to_has_stack = return_zero; | |
3116 | dummy_target.to_has_registers = return_zero; | |
3117 | dummy_target.to_has_execution = return_zero_has_execution; | |
c906108c | 3118 | dummy_target.to_magic = OPS_MAGIC; |
1101cb7b TT |
3119 | |
3120 | install_dummy_methods (&dummy_target); | |
c906108c | 3121 | } |
c906108c | 3122 | \f |
c906108c | 3123 | static void |
fba45db2 | 3124 | debug_to_open (char *args, int from_tty) |
c906108c SS |
3125 | { |
3126 | debug_target.to_open (args, from_tty); | |
3127 | ||
96baa820 | 3128 | fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty); |
c906108c SS |
3129 | } |
3130 | ||
f1c07ab0 | 3131 | void |
460014f5 | 3132 | target_close (struct target_ops *targ) |
f1c07ab0 | 3133 | { |
7fdc1521 TT |
3134 | gdb_assert (!target_is_pushed (targ)); |
3135 | ||
f1c07ab0 | 3136 | if (targ->to_xclose != NULL) |
460014f5 | 3137 | targ->to_xclose (targ); |
f1c07ab0 | 3138 | else if (targ->to_close != NULL) |
de90e03d | 3139 | targ->to_close (targ); |
947b8855 PA |
3140 | |
3141 | if (targetdebug) | |
460014f5 | 3142 | fprintf_unfiltered (gdb_stdlog, "target_close ()\n"); |
f1c07ab0 AC |
3143 | } |
3144 | ||
28439f5e PA |
3145 | int |
3146 | target_thread_alive (ptid_t ptid) | |
c906108c | 3147 | { |
cbffc065 | 3148 | int retval; |
28439f5e | 3149 | |
cbffc065 TT |
3150 | retval = current_target.to_thread_alive (¤t_target, ptid); |
3151 | if (targetdebug) | |
3152 | fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n", | |
3153 | ptid_get_pid (ptid), retval); | |
28439f5e | 3154 | |
cbffc065 | 3155 | return retval; |
28439f5e PA |
3156 | } |
3157 | ||
3158 | void | |
3159 | target_find_new_threads (void) | |
3160 | { | |
09b0dc2b TT |
3161 | current_target.to_find_new_threads (¤t_target); |
3162 | if (targetdebug) | |
3163 | fprintf_unfiltered (gdb_stdlog, "target_find_new_threads ()\n"); | |
c906108c SS |
3164 | } |
3165 | ||
d914c394 SS |
3166 | void |
3167 | target_stop (ptid_t ptid) | |
3168 | { | |
3169 | if (!may_stop) | |
3170 | { | |
3171 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3172 | return; | |
3173 | } | |
3174 | ||
1eab8a48 | 3175 | (*current_target.to_stop) (¤t_target, ptid); |
d914c394 SS |
3176 | } |
3177 | ||
c906108c | 3178 | static void |
f045800c | 3179 | debug_to_post_attach (struct target_ops *self, int pid) |
c906108c | 3180 | { |
f045800c | 3181 | debug_target.to_post_attach (&debug_target, pid); |
c906108c | 3182 | |
28439f5e | 3183 | fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid); |
c906108c SS |
3184 | } |
3185 | ||
09826ec5 PA |
3186 | /* Concatenate ELEM to LIST, a comma separate list, and return the |
3187 | result. The LIST incoming argument is released. */ | |
3188 | ||
3189 | static char * | |
3190 | str_comma_list_concat_elem (char *list, const char *elem) | |
3191 | { | |
3192 | if (list == NULL) | |
3193 | return xstrdup (elem); | |
3194 | else | |
3195 | return reconcat (list, list, ", ", elem, (char *) NULL); | |
3196 | } | |
3197 | ||
3198 | /* Helper for target_options_to_string. If OPT is present in | |
3199 | TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET. | |
3200 | Returns the new resulting string. OPT is removed from | |
3201 | TARGET_OPTIONS. */ | |
3202 | ||
3203 | static char * | |
3204 | do_option (int *target_options, char *ret, | |
3205 | int opt, char *opt_str) | |
3206 | { | |
3207 | if ((*target_options & opt) != 0) | |
3208 | { | |
3209 | ret = str_comma_list_concat_elem (ret, opt_str); | |
3210 | *target_options &= ~opt; | |
3211 | } | |
3212 | ||
3213 | return ret; | |
3214 | } | |
3215 | ||
3216 | char * | |
3217 | target_options_to_string (int target_options) | |
3218 | { | |
3219 | char *ret = NULL; | |
3220 | ||
3221 | #define DO_TARG_OPTION(OPT) \ | |
3222 | ret = do_option (&target_options, ret, OPT, #OPT) | |
3223 | ||
3224 | DO_TARG_OPTION (TARGET_WNOHANG); | |
3225 | ||
3226 | if (target_options != 0) | |
3227 | ret = str_comma_list_concat_elem (ret, "unknown???"); | |
3228 | ||
3229 | if (ret == NULL) | |
3230 | ret = xstrdup (""); | |
3231 | return ret; | |
3232 | } | |
3233 | ||
bf0c5130 | 3234 | static void |
56be3814 UW |
3235 | debug_print_register (const char * func, |
3236 | struct regcache *regcache, int regno) | |
bf0c5130 | 3237 | { |
f8d29908 | 3238 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
5d502164 | 3239 | |
bf0c5130 | 3240 | fprintf_unfiltered (gdb_stdlog, "%s ", func); |
f8d29908 | 3241 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) |
f8d29908 UW |
3242 | && gdbarch_register_name (gdbarch, regno) != NULL |
3243 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') | |
3244 | fprintf_unfiltered (gdb_stdlog, "(%s)", | |
3245 | gdbarch_register_name (gdbarch, regno)); | |
bf0c5130 AC |
3246 | else |
3247 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
0ff58721 | 3248 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) |
bf0c5130 | 3249 | { |
e17a4113 | 3250 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
f8d29908 | 3251 | int i, size = register_size (gdbarch, regno); |
e362b510 | 3252 | gdb_byte buf[MAX_REGISTER_SIZE]; |
5d502164 | 3253 | |
0ff58721 | 3254 | regcache_raw_collect (regcache, regno, buf); |
bf0c5130 | 3255 | fprintf_unfiltered (gdb_stdlog, " = "); |
81c4a259 | 3256 | for (i = 0; i < size; i++) |
bf0c5130 AC |
3257 | { |
3258 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
3259 | } | |
81c4a259 | 3260 | if (size <= sizeof (LONGEST)) |
bf0c5130 | 3261 | { |
e17a4113 | 3262 | ULONGEST val = extract_unsigned_integer (buf, size, byte_order); |
5d502164 | 3263 | |
0b1553bc UW |
3264 | fprintf_unfiltered (gdb_stdlog, " %s %s", |
3265 | core_addr_to_string_nz (val), plongest (val)); | |
bf0c5130 AC |
3266 | } |
3267 | } | |
3268 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
3269 | } | |
3270 | ||
28439f5e PA |
3271 | void |
3272 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 3273 | { |
ad5989bd TT |
3274 | current_target.to_fetch_registers (¤t_target, regcache, regno); |
3275 | if (targetdebug) | |
3276 | debug_print_register ("target_fetch_registers", regcache, regno); | |
c906108c SS |
3277 | } |
3278 | ||
28439f5e PA |
3279 | void |
3280 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 3281 | { |
28439f5e | 3282 | struct target_ops *t; |
5d502164 | 3283 | |
d914c394 SS |
3284 | if (!may_write_registers) |
3285 | error (_("Writing to registers is not allowed (regno %d)"), regno); | |
3286 | ||
6b84065d TT |
3287 | current_target.to_store_registers (¤t_target, regcache, regno); |
3288 | if (targetdebug) | |
28439f5e | 3289 | { |
6b84065d | 3290 | debug_print_register ("target_store_registers", regcache, regno); |
28439f5e | 3291 | } |
c906108c SS |
3292 | } |
3293 | ||
dc146f7c VP |
3294 | int |
3295 | target_core_of_thread (ptid_t ptid) | |
3296 | { | |
9e538d0d | 3297 | int retval = current_target.to_core_of_thread (¤t_target, ptid); |
dc146f7c | 3298 | |
9e538d0d TT |
3299 | if (targetdebug) |
3300 | fprintf_unfiltered (gdb_stdlog, | |
3301 | "target_core_of_thread (%d) = %d\n", | |
3302 | ptid_get_pid (ptid), retval); | |
3303 | return retval; | |
dc146f7c VP |
3304 | } |
3305 | ||
936d2992 PA |
3306 | int |
3307 | simple_verify_memory (struct target_ops *ops, | |
3308 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
3309 | { | |
3310 | LONGEST total_xfered = 0; | |
3311 | ||
3312 | while (total_xfered < size) | |
3313 | { | |
3314 | ULONGEST xfered_len; | |
3315 | enum target_xfer_status status; | |
3316 | gdb_byte buf[1024]; | |
3317 | ULONGEST howmuch = min (sizeof (buf), size - total_xfered); | |
3318 | ||
3319 | status = target_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
3320 | buf, NULL, lma + total_xfered, howmuch, | |
3321 | &xfered_len); | |
3322 | if (status == TARGET_XFER_OK | |
3323 | && memcmp (data + total_xfered, buf, xfered_len) == 0) | |
3324 | { | |
3325 | total_xfered += xfered_len; | |
3326 | QUIT; | |
3327 | } | |
3328 | else | |
3329 | return 0; | |
3330 | } | |
3331 | return 1; | |
3332 | } | |
3333 | ||
3334 | /* Default implementation of memory verification. */ | |
3335 | ||
3336 | static int | |
3337 | default_verify_memory (struct target_ops *self, | |
3338 | const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3339 | { | |
3340 | /* Start over from the top of the target stack. */ | |
3341 | return simple_verify_memory (current_target.beneath, | |
3342 | data, memaddr, size); | |
3343 | } | |
3344 | ||
4a5e7a5b PA |
3345 | int |
3346 | target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3347 | { | |
eb276a6b TT |
3348 | int retval = current_target.to_verify_memory (¤t_target, |
3349 | data, memaddr, size); | |
5d502164 | 3350 | |
eb276a6b TT |
3351 | if (targetdebug) |
3352 | fprintf_unfiltered (gdb_stdlog, | |
3353 | "target_verify_memory (%s, %s) = %d\n", | |
3354 | paddress (target_gdbarch (), memaddr), | |
3355 | pulongest (size), | |
3356 | retval); | |
3357 | return retval; | |
4a5e7a5b PA |
3358 | } |
3359 | ||
9c06b0b4 TJB |
3360 | /* The documentation for this function is in its prototype declaration in |
3361 | target.h. */ | |
3362 | ||
3363 | int | |
3364 | target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
3365 | { | |
cd4ae029 | 3366 | int ret; |
9c06b0b4 | 3367 | |
cd4ae029 TT |
3368 | ret = current_target.to_insert_mask_watchpoint (¤t_target, |
3369 | addr, mask, rw); | |
9c06b0b4 | 3370 | |
cd4ae029 TT |
3371 | if (targetdebug) |
3372 | fprintf_unfiltered (gdb_stdlog, "\ | |
9c06b0b4 | 3373 | target_insert_mask_watchpoint (%s, %s, %d) = %d\n", |
cd4ae029 TT |
3374 | core_addr_to_string (addr), |
3375 | core_addr_to_string (mask), rw, ret); | |
3376 | ||
3377 | return ret; | |
9c06b0b4 TJB |
3378 | } |
3379 | ||
3380 | /* The documentation for this function is in its prototype declaration in | |
3381 | target.h. */ | |
3382 | ||
3383 | int | |
3384 | target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
3385 | { | |
8b1c364c | 3386 | int ret; |
9c06b0b4 | 3387 | |
8b1c364c TT |
3388 | ret = current_target.to_remove_mask_watchpoint (¤t_target, |
3389 | addr, mask, rw); | |
9c06b0b4 | 3390 | |
8b1c364c TT |
3391 | if (targetdebug) |
3392 | fprintf_unfiltered (gdb_stdlog, "\ | |
9c06b0b4 | 3393 | target_remove_mask_watchpoint (%s, %s, %d) = %d\n", |
8b1c364c TT |
3394 | core_addr_to_string (addr), |
3395 | core_addr_to_string (mask), rw, ret); | |
9c06b0b4 | 3396 | |
8b1c364c | 3397 | return ret; |
9c06b0b4 TJB |
3398 | } |
3399 | ||
3400 | /* The documentation for this function is in its prototype declaration | |
3401 | in target.h. */ | |
3402 | ||
3403 | int | |
3404 | target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask) | |
3405 | { | |
6c7e5e5c TT |
3406 | return current_target.to_masked_watch_num_registers (¤t_target, |
3407 | addr, mask); | |
9c06b0b4 TJB |
3408 | } |
3409 | ||
f1310107 TJB |
3410 | /* The documentation for this function is in its prototype declaration |
3411 | in target.h. */ | |
3412 | ||
3413 | int | |
3414 | target_ranged_break_num_registers (void) | |
3415 | { | |
a134316b | 3416 | return current_target.to_ranged_break_num_registers (¤t_target); |
f1310107 TJB |
3417 | } |
3418 | ||
02d27625 MM |
3419 | /* See target.h. */ |
3420 | ||
02d27625 MM |
3421 | struct btrace_target_info * |
3422 | target_enable_btrace (ptid_t ptid) | |
3423 | { | |
6dc7fcf4 | 3424 | return current_target.to_enable_btrace (¤t_target, ptid); |
02d27625 MM |
3425 | } |
3426 | ||
3427 | /* See target.h. */ | |
3428 | ||
3429 | void | |
3430 | target_disable_btrace (struct btrace_target_info *btinfo) | |
3431 | { | |
8dc292d3 | 3432 | current_target.to_disable_btrace (¤t_target, btinfo); |
02d27625 MM |
3433 | } |
3434 | ||
3435 | /* See target.h. */ | |
3436 | ||
3437 | void | |
3438 | target_teardown_btrace (struct btrace_target_info *btinfo) | |
3439 | { | |
9ace480d | 3440 | current_target.to_teardown_btrace (¤t_target, btinfo); |
02d27625 MM |
3441 | } |
3442 | ||
3443 | /* See target.h. */ | |
3444 | ||
969c39fb MM |
3445 | enum btrace_error |
3446 | target_read_btrace (VEC (btrace_block_s) **btrace, | |
3447 | struct btrace_target_info *btinfo, | |
02d27625 MM |
3448 | enum btrace_read_type type) |
3449 | { | |
eb5b20d4 | 3450 | return current_target.to_read_btrace (¤t_target, btrace, btinfo, type); |
02d27625 MM |
3451 | } |
3452 | ||
d02ed0bb MM |
3453 | /* See target.h. */ |
3454 | ||
7c1687a9 MM |
3455 | void |
3456 | target_stop_recording (void) | |
3457 | { | |
ee97f592 | 3458 | current_target.to_stop_recording (¤t_target); |
7c1687a9 MM |
3459 | } |
3460 | ||
3461 | /* See target.h. */ | |
3462 | ||
d02ed0bb | 3463 | void |
85e1311a | 3464 | target_save_record (const char *filename) |
d02ed0bb | 3465 | { |
f09e2107 | 3466 | current_target.to_save_record (¤t_target, filename); |
d02ed0bb MM |
3467 | } |
3468 | ||
3469 | /* See target.h. */ | |
3470 | ||
3471 | int | |
3472 | target_supports_delete_record (void) | |
3473 | { | |
3474 | struct target_ops *t; | |
3475 | ||
3476 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
b0ed115f TT |
3477 | if (t->to_delete_record != delegate_delete_record |
3478 | && t->to_delete_record != tdefault_delete_record) | |
d02ed0bb MM |
3479 | return 1; |
3480 | ||
3481 | return 0; | |
3482 | } | |
3483 | ||
3484 | /* See target.h. */ | |
3485 | ||
3486 | void | |
3487 | target_delete_record (void) | |
3488 | { | |
07366925 | 3489 | current_target.to_delete_record (¤t_target); |
d02ed0bb MM |
3490 | } |
3491 | ||
3492 | /* See target.h. */ | |
3493 | ||
3494 | int | |
3495 | target_record_is_replaying (void) | |
3496 | { | |
dd2e9d25 | 3497 | return current_target.to_record_is_replaying (¤t_target); |
d02ed0bb MM |
3498 | } |
3499 | ||
3500 | /* See target.h. */ | |
3501 | ||
3502 | void | |
3503 | target_goto_record_begin (void) | |
3504 | { | |
671e76cc | 3505 | current_target.to_goto_record_begin (¤t_target); |
d02ed0bb MM |
3506 | } |
3507 | ||
3508 | /* See target.h. */ | |
3509 | ||
3510 | void | |
3511 | target_goto_record_end (void) | |
3512 | { | |
e9179bb3 | 3513 | current_target.to_goto_record_end (¤t_target); |
d02ed0bb MM |
3514 | } |
3515 | ||
3516 | /* See target.h. */ | |
3517 | ||
3518 | void | |
3519 | target_goto_record (ULONGEST insn) | |
3520 | { | |
05969c84 | 3521 | current_target.to_goto_record (¤t_target, insn); |
d02ed0bb MM |
3522 | } |
3523 | ||
67c86d06 MM |
3524 | /* See target.h. */ |
3525 | ||
3526 | void | |
3527 | target_insn_history (int size, int flags) | |
3528 | { | |
3679abfa | 3529 | current_target.to_insn_history (¤t_target, size, flags); |
67c86d06 MM |
3530 | } |
3531 | ||
3532 | /* See target.h. */ | |
3533 | ||
3534 | void | |
3535 | target_insn_history_from (ULONGEST from, int size, int flags) | |
3536 | { | |
8444ab58 | 3537 | current_target.to_insn_history_from (¤t_target, from, size, flags); |
67c86d06 MM |
3538 | } |
3539 | ||
3540 | /* See target.h. */ | |
3541 | ||
3542 | void | |
3543 | target_insn_history_range (ULONGEST begin, ULONGEST end, int flags) | |
3544 | { | |
c29302cc | 3545 | current_target.to_insn_history_range (¤t_target, begin, end, flags); |
67c86d06 MM |
3546 | } |
3547 | ||
15984c13 MM |
3548 | /* See target.h. */ |
3549 | ||
3550 | void | |
3551 | target_call_history (int size, int flags) | |
3552 | { | |
170049d4 | 3553 | current_target.to_call_history (¤t_target, size, flags); |
15984c13 MM |
3554 | } |
3555 | ||
3556 | /* See target.h. */ | |
3557 | ||
3558 | void | |
3559 | target_call_history_from (ULONGEST begin, int size, int flags) | |
3560 | { | |
16fc27d6 | 3561 | current_target.to_call_history_from (¤t_target, begin, size, flags); |
15984c13 MM |
3562 | } |
3563 | ||
3564 | /* See target.h. */ | |
3565 | ||
3566 | void | |
3567 | target_call_history_range (ULONGEST begin, ULONGEST end, int flags) | |
3568 | { | |
115d9817 | 3569 | current_target.to_call_history_range (¤t_target, begin, end, flags); |
15984c13 MM |
3570 | } |
3571 | ||
c906108c | 3572 | static void |
f32dbf8c | 3573 | debug_to_prepare_to_store (struct target_ops *self, struct regcache *regcache) |
c906108c | 3574 | { |
f32dbf8c | 3575 | debug_target.to_prepare_to_store (&debug_target, regcache); |
c906108c | 3576 | |
96baa820 | 3577 | fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n"); |
c906108c SS |
3578 | } |
3579 | ||
ea001bdc MM |
3580 | /* See target.h. */ |
3581 | ||
3582 | const struct frame_unwind * | |
3583 | target_get_unwinder (void) | |
3584 | { | |
ac01945b | 3585 | return current_target.to_get_unwinder (¤t_target); |
ea001bdc MM |
3586 | } |
3587 | ||
3588 | /* See target.h. */ | |
3589 | ||
3590 | const struct frame_unwind * | |
3591 | target_get_tailcall_unwinder (void) | |
3592 | { | |
ac01945b | 3593 | return current_target.to_get_tailcall_unwinder (¤t_target); |
ea001bdc MM |
3594 | } |
3595 | ||
c0eca49f | 3596 | /* Default implementation of to_decr_pc_after_break. */ |
118e6252 | 3597 | |
c0eca49f TT |
3598 | static CORE_ADDR |
3599 | default_target_decr_pc_after_break (struct target_ops *ops, | |
118e6252 MM |
3600 | struct gdbarch *gdbarch) |
3601 | { | |
118e6252 MM |
3602 | return gdbarch_decr_pc_after_break (gdbarch); |
3603 | } | |
3604 | ||
3605 | /* See target.h. */ | |
3606 | ||
3607 | CORE_ADDR | |
3608 | target_decr_pc_after_break (struct gdbarch *gdbarch) | |
3609 | { | |
c0eca49f | 3610 | return current_target.to_decr_pc_after_break (¤t_target, gdbarch); |
118e6252 MM |
3611 | } |
3612 | ||
5fff78c4 MM |
3613 | /* See target.h. */ |
3614 | ||
3615 | void | |
3616 | target_prepare_to_generate_core (void) | |
3617 | { | |
3618 | current_target.to_prepare_to_generate_core (¤t_target); | |
3619 | } | |
3620 | ||
3621 | /* See target.h. */ | |
3622 | ||
3623 | void | |
3624 | target_done_generating_core (void) | |
3625 | { | |
3626 | current_target.to_done_generating_core (¤t_target); | |
3627 | } | |
3628 | ||
c906108c | 3629 | static void |
fba45db2 | 3630 | debug_to_files_info (struct target_ops *target) |
c906108c SS |
3631 | { |
3632 | debug_target.to_files_info (target); | |
3633 | ||
96baa820 | 3634 | fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n"); |
c906108c SS |
3635 | } |
3636 | ||
3637 | static int | |
3db08215 | 3638 | debug_to_insert_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, |
a6d9a66e | 3639 | struct bp_target_info *bp_tgt) |
c906108c SS |
3640 | { |
3641 | int retval; | |
3642 | ||
6b84065d | 3643 | retval = debug_target.to_insert_breakpoint (&debug_target, gdbarch, bp_tgt); |
c906108c | 3644 | |
96baa820 | 3645 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
3646 | "target_insert_breakpoint (%s, xxx) = %ld\n", |
3647 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 3648 | (unsigned long) retval); |
c906108c SS |
3649 | return retval; |
3650 | } | |
3651 | ||
3652 | static int | |
3db08215 | 3653 | debug_to_remove_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, |
a6d9a66e | 3654 | struct bp_target_info *bp_tgt) |
c906108c SS |
3655 | { |
3656 | int retval; | |
3657 | ||
6b84065d | 3658 | retval = debug_target.to_remove_breakpoint (&debug_target, gdbarch, bp_tgt); |
c906108c | 3659 | |
96baa820 | 3660 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
3661 | "target_remove_breakpoint (%s, xxx) = %ld\n", |
3662 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 3663 | (unsigned long) retval); |
c906108c SS |
3664 | return retval; |
3665 | } | |
3666 | ||
ccaa32c7 | 3667 | static int |
5461485a TT |
3668 | debug_to_can_use_hw_breakpoint (struct target_ops *self, |
3669 | int type, int cnt, int from_tty) | |
ccaa32c7 GS |
3670 | { |
3671 | int retval; | |
3672 | ||
5461485a TT |
3673 | retval = debug_target.to_can_use_hw_breakpoint (&debug_target, |
3674 | type, cnt, from_tty); | |
ccaa32c7 GS |
3675 | |
3676 | fprintf_unfiltered (gdb_stdlog, | |
3677 | "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n", | |
3678 | (unsigned long) type, | |
3679 | (unsigned long) cnt, | |
3680 | (unsigned long) from_tty, | |
3681 | (unsigned long) retval); | |
3682 | return retval; | |
3683 | } | |
3684 | ||
e0d24f8d | 3685 | static int |
31568a15 TT |
3686 | debug_to_region_ok_for_hw_watchpoint (struct target_ops *self, |
3687 | CORE_ADDR addr, int len) | |
e0d24f8d WZ |
3688 | { |
3689 | CORE_ADDR retval; | |
3690 | ||
31568a15 TT |
3691 | retval = debug_target.to_region_ok_for_hw_watchpoint (&debug_target, |
3692 | addr, len); | |
e0d24f8d WZ |
3693 | |
3694 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3695 | "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n", |
3696 | core_addr_to_string (addr), (unsigned long) len, | |
3697 | core_addr_to_string (retval)); | |
e0d24f8d WZ |
3698 | return retval; |
3699 | } | |
3700 | ||
0cf6dd15 | 3701 | static int |
c3a5ff89 TT |
3702 | debug_to_can_accel_watchpoint_condition (struct target_ops *self, |
3703 | CORE_ADDR addr, int len, int rw, | |
0cf6dd15 TJB |
3704 | struct expression *cond) |
3705 | { | |
3706 | int retval; | |
3707 | ||
c3a5ff89 TT |
3708 | retval = debug_target.to_can_accel_watchpoint_condition (&debug_target, |
3709 | addr, len, | |
3e43a32a | 3710 | rw, cond); |
0cf6dd15 TJB |
3711 | |
3712 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
3713 | "target_can_accel_watchpoint_condition " |
3714 | "(%s, %d, %d, %s) = %ld\n", | |
bd91e7ae OS |
3715 | core_addr_to_string (addr), len, rw, |
3716 | host_address_to_string (cond), (unsigned long) retval); | |
0cf6dd15 TJB |
3717 | return retval; |
3718 | } | |
3719 | ||
ccaa32c7 | 3720 | static int |
6a109b6b | 3721 | debug_to_stopped_by_watchpoint (struct target_ops *ops) |
ccaa32c7 GS |
3722 | { |
3723 | int retval; | |
3724 | ||
6a109b6b | 3725 | retval = debug_target.to_stopped_by_watchpoint (&debug_target); |
ccaa32c7 GS |
3726 | |
3727 | fprintf_unfiltered (gdb_stdlog, | |
d92524f1 | 3728 | "target_stopped_by_watchpoint () = %ld\n", |
ccaa32c7 GS |
3729 | (unsigned long) retval); |
3730 | return retval; | |
3731 | } | |
3732 | ||
4aa7a7f5 JJ |
3733 | static int |
3734 | debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr) | |
ccaa32c7 | 3735 | { |
4aa7a7f5 | 3736 | int retval; |
ccaa32c7 | 3737 | |
4aa7a7f5 | 3738 | retval = debug_target.to_stopped_data_address (target, addr); |
ccaa32c7 GS |
3739 | |
3740 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3741 | "target_stopped_data_address ([%s]) = %ld\n", |
3742 | core_addr_to_string (*addr), | |
4aa7a7f5 | 3743 | (unsigned long)retval); |
ccaa32c7 GS |
3744 | return retval; |
3745 | } | |
3746 | ||
5009afc5 AS |
3747 | static int |
3748 | debug_to_watchpoint_addr_within_range (struct target_ops *target, | |
3749 | CORE_ADDR addr, | |
3750 | CORE_ADDR start, int length) | |
3751 | { | |
3752 | int retval; | |
3753 | ||
3754 | retval = debug_target.to_watchpoint_addr_within_range (target, addr, | |
3755 | start, length); | |
3756 | ||
3757 | fprintf_filtered (gdb_stdlog, | |
bd91e7ae OS |
3758 | "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n", |
3759 | core_addr_to_string (addr), core_addr_to_string (start), | |
3760 | length, retval); | |
5009afc5 AS |
3761 | return retval; |
3762 | } | |
3763 | ||
ccaa32c7 | 3764 | static int |
23a26771 TT |
3765 | debug_to_insert_hw_breakpoint (struct target_ops *self, |
3766 | struct gdbarch *gdbarch, | |
a6d9a66e | 3767 | struct bp_target_info *bp_tgt) |
ccaa32c7 GS |
3768 | { |
3769 | int retval; | |
3770 | ||
23a26771 TT |
3771 | retval = debug_target.to_insert_hw_breakpoint (&debug_target, |
3772 | gdbarch, bp_tgt); | |
ccaa32c7 GS |
3773 | |
3774 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3775 | "target_insert_hw_breakpoint (%s, xxx) = %ld\n", |
3776 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
3777 | (unsigned long) retval); |
3778 | return retval; | |
3779 | } | |
3780 | ||
3781 | static int | |
a64dc96c TT |
3782 | debug_to_remove_hw_breakpoint (struct target_ops *self, |
3783 | struct gdbarch *gdbarch, | |
a6d9a66e | 3784 | struct bp_target_info *bp_tgt) |
ccaa32c7 GS |
3785 | { |
3786 | int retval; | |
3787 | ||
a64dc96c TT |
3788 | retval = debug_target.to_remove_hw_breakpoint (&debug_target, |
3789 | gdbarch, bp_tgt); | |
ccaa32c7 GS |
3790 | |
3791 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3792 | "target_remove_hw_breakpoint (%s, xxx) = %ld\n", |
3793 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
3794 | (unsigned long) retval); |
3795 | return retval; | |
3796 | } | |
3797 | ||
3798 | static int | |
7bb99c53 TT |
3799 | debug_to_insert_watchpoint (struct target_ops *self, |
3800 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 3801 | struct expression *cond) |
ccaa32c7 GS |
3802 | { |
3803 | int retval; | |
3804 | ||
7bb99c53 TT |
3805 | retval = debug_target.to_insert_watchpoint (&debug_target, |
3806 | addr, len, type, cond); | |
ccaa32c7 GS |
3807 | |
3808 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3809 | "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n", |
3810 | core_addr_to_string (addr), len, type, | |
3811 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
3812 | return retval; |
3813 | } | |
3814 | ||
3815 | static int | |
11b5219a TT |
3816 | debug_to_remove_watchpoint (struct target_ops *self, |
3817 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 3818 | struct expression *cond) |
ccaa32c7 GS |
3819 | { |
3820 | int retval; | |
3821 | ||
11b5219a TT |
3822 | retval = debug_target.to_remove_watchpoint (&debug_target, |
3823 | addr, len, type, cond); | |
ccaa32c7 GS |
3824 | |
3825 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3826 | "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n", |
3827 | core_addr_to_string (addr), len, type, | |
3828 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
3829 | return retval; |
3830 | } | |
3831 | ||
c906108c | 3832 | static void |
c42bf286 | 3833 | debug_to_terminal_init (struct target_ops *self) |
c906108c | 3834 | { |
c42bf286 | 3835 | debug_target.to_terminal_init (&debug_target); |
c906108c | 3836 | |
96baa820 | 3837 | fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n"); |
c906108c SS |
3838 | } |
3839 | ||
3840 | static void | |
d2f640d4 | 3841 | debug_to_terminal_inferior (struct target_ops *self) |
c906108c | 3842 | { |
d2f640d4 | 3843 | debug_target.to_terminal_inferior (&debug_target); |
c906108c | 3844 | |
96baa820 | 3845 | fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n"); |
c906108c SS |
3846 | } |
3847 | ||
3848 | static void | |
2e1e1a19 | 3849 | debug_to_terminal_ours_for_output (struct target_ops *self) |
c906108c | 3850 | { |
2e1e1a19 | 3851 | debug_target.to_terminal_ours_for_output (&debug_target); |
c906108c | 3852 | |
96baa820 | 3853 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n"); |
c906108c SS |
3854 | } |
3855 | ||
3856 | static void | |
e3594fd1 | 3857 | debug_to_terminal_ours (struct target_ops *self) |
c906108c | 3858 | { |
e3594fd1 | 3859 | debug_target.to_terminal_ours (&debug_target); |
c906108c | 3860 | |
96baa820 | 3861 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n"); |
c906108c SS |
3862 | } |
3863 | ||
a790ad35 | 3864 | static void |
ae3bd431 | 3865 | debug_to_terminal_save_ours (struct target_ops *self) |
a790ad35 | 3866 | { |
ae3bd431 | 3867 | debug_target.to_terminal_save_ours (&debug_target); |
a790ad35 SC |
3868 | |
3869 | fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n"); | |
3870 | } | |
3871 | ||
c906108c | 3872 | static void |
0a4f40a2 TT |
3873 | debug_to_terminal_info (struct target_ops *self, |
3874 | const char *arg, int from_tty) | |
c906108c | 3875 | { |
0a4f40a2 | 3876 | debug_target.to_terminal_info (&debug_target, arg, from_tty); |
c906108c | 3877 | |
96baa820 | 3878 | fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg, |
c906108c SS |
3879 | from_tty); |
3880 | } | |
3881 | ||
c906108c | 3882 | static void |
9cbe5fff | 3883 | debug_to_load (struct target_ops *self, const char *args, int from_tty) |
c906108c | 3884 | { |
71a9f134 | 3885 | debug_target.to_load (&debug_target, args, from_tty); |
c906108c | 3886 | |
96baa820 | 3887 | fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty); |
c906108c SS |
3888 | } |
3889 | ||
c906108c | 3890 | static void |
2e97a79e | 3891 | debug_to_post_startup_inferior (struct target_ops *self, ptid_t ptid) |
c906108c | 3892 | { |
2e97a79e | 3893 | debug_target.to_post_startup_inferior (&debug_target, ptid); |
c906108c | 3894 | |
96baa820 | 3895 | fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n", |
dfd4cc63 | 3896 | ptid_get_pid (ptid)); |
c906108c SS |
3897 | } |
3898 | ||
77b06cd7 | 3899 | static int |
a863b201 | 3900 | debug_to_insert_fork_catchpoint (struct target_ops *self, int pid) |
c906108c | 3901 | { |
77b06cd7 TJB |
3902 | int retval; |
3903 | ||
a863b201 | 3904 | retval = debug_target.to_insert_fork_catchpoint (&debug_target, pid); |
77b06cd7 TJB |
3905 | |
3906 | fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d) = %d\n", | |
3907 | pid, retval); | |
c906108c | 3908 | |
77b06cd7 | 3909 | return retval; |
c906108c SS |
3910 | } |
3911 | ||
3912 | static int | |
973fc227 | 3913 | debug_to_remove_fork_catchpoint (struct target_ops *self, int pid) |
c906108c | 3914 | { |
c5aa993b | 3915 | int retval; |
c906108c | 3916 | |
973fc227 | 3917 | retval = debug_target.to_remove_fork_catchpoint (&debug_target, pid); |
c906108c | 3918 | |
96baa820 | 3919 | fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n", |
c5aa993b | 3920 | pid, retval); |
c906108c SS |
3921 | |
3922 | return retval; | |
3923 | } | |
3924 | ||
77b06cd7 | 3925 | static int |
3ecc7da0 | 3926 | debug_to_insert_vfork_catchpoint (struct target_ops *self, int pid) |
c906108c | 3927 | { |
77b06cd7 TJB |
3928 | int retval; |
3929 | ||
3ecc7da0 | 3930 | retval = debug_target.to_insert_vfork_catchpoint (&debug_target, pid); |
c906108c | 3931 | |
77b06cd7 TJB |
3932 | fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d) = %d\n", |
3933 | pid, retval); | |
3934 | ||
3935 | return retval; | |
c906108c SS |
3936 | } |
3937 | ||
3938 | static int | |
e98cf0cd | 3939 | debug_to_remove_vfork_catchpoint (struct target_ops *self, int pid) |
c906108c | 3940 | { |
c5aa993b | 3941 | int retval; |
c906108c | 3942 | |
e98cf0cd | 3943 | retval = debug_target.to_remove_vfork_catchpoint (&debug_target, pid); |
c906108c | 3944 | |
96baa820 | 3945 | fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n", |
c5aa993b | 3946 | pid, retval); |
c906108c SS |
3947 | |
3948 | return retval; | |
3949 | } | |
3950 | ||
77b06cd7 | 3951 | static int |
ba025e51 | 3952 | debug_to_insert_exec_catchpoint (struct target_ops *self, int pid) |
c906108c | 3953 | { |
77b06cd7 TJB |
3954 | int retval; |
3955 | ||
ba025e51 | 3956 | retval = debug_target.to_insert_exec_catchpoint (&debug_target, pid); |
c906108c | 3957 | |
77b06cd7 TJB |
3958 | fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d) = %d\n", |
3959 | pid, retval); | |
3960 | ||
3961 | return retval; | |
c906108c SS |
3962 | } |
3963 | ||
3964 | static int | |
758e29d2 | 3965 | debug_to_remove_exec_catchpoint (struct target_ops *self, int pid) |
c906108c | 3966 | { |
c5aa993b | 3967 | int retval; |
c906108c | 3968 | |
758e29d2 | 3969 | retval = debug_target.to_remove_exec_catchpoint (&debug_target, pid); |
c906108c | 3970 | |
96baa820 | 3971 | fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n", |
c5aa993b | 3972 | pid, retval); |
c906108c SS |
3973 | |
3974 | return retval; | |
3975 | } | |
3976 | ||
c906108c | 3977 | static int |
d796e1d6 TT |
3978 | debug_to_has_exited (struct target_ops *self, |
3979 | int pid, int wait_status, int *exit_status) | |
c906108c | 3980 | { |
c5aa993b | 3981 | int has_exited; |
c906108c | 3982 | |
d796e1d6 TT |
3983 | has_exited = debug_target.to_has_exited (&debug_target, |
3984 | pid, wait_status, exit_status); | |
c906108c | 3985 | |
96baa820 | 3986 | fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n", |
c5aa993b | 3987 | pid, wait_status, *exit_status, has_exited); |
c906108c SS |
3988 | |
3989 | return has_exited; | |
3990 | } | |
3991 | ||
c906108c | 3992 | static int |
da82bd6b | 3993 | debug_to_can_run (struct target_ops *self) |
c906108c SS |
3994 | { |
3995 | int retval; | |
3996 | ||
da82bd6b | 3997 | retval = debug_target.to_can_run (&debug_target); |
c906108c | 3998 | |
96baa820 | 3999 | fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval); |
c906108c SS |
4000 | |
4001 | return retval; | |
4002 | } | |
4003 | ||
c2250ad1 UW |
4004 | static struct gdbarch * |
4005 | debug_to_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
4006 | { | |
4007 | struct gdbarch *retval; | |
4008 | ||
4009 | retval = debug_target.to_thread_architecture (ops, ptid); | |
4010 | ||
3e43a32a MS |
4011 | fprintf_unfiltered (gdb_stdlog, |
4012 | "target_thread_architecture (%s) = %s [%s]\n", | |
4013 | target_pid_to_str (ptid), | |
4014 | host_address_to_string (retval), | |
c2250ad1 UW |
4015 | gdbarch_bfd_arch_info (retval)->printable_name); |
4016 | return retval; | |
4017 | } | |
4018 | ||
c906108c | 4019 | static void |
1eab8a48 | 4020 | debug_to_stop (struct target_ops *self, ptid_t ptid) |
c906108c | 4021 | { |
1eab8a48 | 4022 | debug_target.to_stop (&debug_target, ptid); |
c906108c | 4023 | |
94cc34af PA |
4024 | fprintf_unfiltered (gdb_stdlog, "target_stop (%s)\n", |
4025 | target_pid_to_str (ptid)); | |
c906108c SS |
4026 | } |
4027 | ||
96baa820 | 4028 | static void |
a30bf1f1 | 4029 | debug_to_rcmd (struct target_ops *self, const char *command, |
d9fcf2fb | 4030 | struct ui_file *outbuf) |
96baa820 | 4031 | { |
1aac633b | 4032 | debug_target.to_rcmd (&debug_target, command, outbuf); |
96baa820 JM |
4033 | fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command); |
4034 | } | |
4035 | ||
c906108c | 4036 | static char * |
8dd27370 | 4037 | debug_to_pid_to_exec_file (struct target_ops *self, int pid) |
c906108c | 4038 | { |
c5aa993b | 4039 | char *exec_file; |
c906108c | 4040 | |
8dd27370 | 4041 | exec_file = debug_target.to_pid_to_exec_file (&debug_target, pid); |
c906108c | 4042 | |
96baa820 | 4043 | fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n", |
c5aa993b | 4044 | pid, exec_file); |
c906108c SS |
4045 | |
4046 | return exec_file; | |
4047 | } | |
4048 | ||
c906108c | 4049 | static void |
fba45db2 | 4050 | setup_target_debug (void) |
c906108c SS |
4051 | { |
4052 | memcpy (&debug_target, ¤t_target, sizeof debug_target); | |
4053 | ||
4054 | current_target.to_open = debug_to_open; | |
c906108c | 4055 | current_target.to_post_attach = debug_to_post_attach; |
c906108c | 4056 | current_target.to_prepare_to_store = debug_to_prepare_to_store; |
c906108c SS |
4057 | current_target.to_files_info = debug_to_files_info; |
4058 | current_target.to_insert_breakpoint = debug_to_insert_breakpoint; | |
4059 | current_target.to_remove_breakpoint = debug_to_remove_breakpoint; | |
ccaa32c7 GS |
4060 | current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint; |
4061 | current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint; | |
4062 | current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint; | |
4063 | current_target.to_insert_watchpoint = debug_to_insert_watchpoint; | |
4064 | current_target.to_remove_watchpoint = debug_to_remove_watchpoint; | |
4065 | current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint; | |
4066 | current_target.to_stopped_data_address = debug_to_stopped_data_address; | |
3e43a32a MS |
4067 | current_target.to_watchpoint_addr_within_range |
4068 | = debug_to_watchpoint_addr_within_range; | |
4069 | current_target.to_region_ok_for_hw_watchpoint | |
4070 | = debug_to_region_ok_for_hw_watchpoint; | |
4071 | current_target.to_can_accel_watchpoint_condition | |
4072 | = debug_to_can_accel_watchpoint_condition; | |
c906108c SS |
4073 | current_target.to_terminal_init = debug_to_terminal_init; |
4074 | current_target.to_terminal_inferior = debug_to_terminal_inferior; | |
3e43a32a MS |
4075 | current_target.to_terminal_ours_for_output |
4076 | = debug_to_terminal_ours_for_output; | |
c906108c | 4077 | current_target.to_terminal_ours = debug_to_terminal_ours; |
a790ad35 | 4078 | current_target.to_terminal_save_ours = debug_to_terminal_save_ours; |
c906108c | 4079 | current_target.to_terminal_info = debug_to_terminal_info; |
c906108c | 4080 | current_target.to_load = debug_to_load; |
c906108c | 4081 | current_target.to_post_startup_inferior = debug_to_post_startup_inferior; |
c906108c SS |
4082 | current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint; |
4083 | current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint; | |
4084 | current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint; | |
4085 | current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint; | |
c906108c SS |
4086 | current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint; |
4087 | current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint; | |
c906108c | 4088 | current_target.to_has_exited = debug_to_has_exited; |
c906108c | 4089 | current_target.to_can_run = debug_to_can_run; |
c906108c | 4090 | current_target.to_stop = debug_to_stop; |
96baa820 | 4091 | current_target.to_rcmd = debug_to_rcmd; |
c906108c | 4092 | current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file; |
c2250ad1 | 4093 | current_target.to_thread_architecture = debug_to_thread_architecture; |
c906108c | 4094 | } |
c906108c | 4095 | \f |
c5aa993b JM |
4096 | |
4097 | static char targ_desc[] = | |
3e43a32a MS |
4098 | "Names of targets and files being debugged.\nShows the entire \ |
4099 | stack of targets currently in use (including the exec-file,\n\ | |
c906108c SS |
4100 | core-file, and process, if any), as well as the symbol file name."; |
4101 | ||
a53f3625 | 4102 | static void |
a30bf1f1 TT |
4103 | default_rcmd (struct target_ops *self, const char *command, |
4104 | struct ui_file *output) | |
a53f3625 TT |
4105 | { |
4106 | error (_("\"monitor\" command not supported by this target.")); | |
4107 | } | |
4108 | ||
96baa820 JM |
4109 | static void |
4110 | do_monitor_command (char *cmd, | |
4111 | int from_tty) | |
4112 | { | |
96baa820 JM |
4113 | target_rcmd (cmd, gdb_stdtarg); |
4114 | } | |
4115 | ||
87680a14 JB |
4116 | /* Print the name of each layers of our target stack. */ |
4117 | ||
4118 | static void | |
4119 | maintenance_print_target_stack (char *cmd, int from_tty) | |
4120 | { | |
4121 | struct target_ops *t; | |
4122 | ||
4123 | printf_filtered (_("The current target stack is:\n")); | |
4124 | ||
4125 | for (t = target_stack; t != NULL; t = t->beneath) | |
4126 | { | |
4127 | printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname); | |
4128 | } | |
4129 | } | |
4130 | ||
329ea579 PA |
4131 | /* Controls if targets can report that they can/are async. This is |
4132 | just for maintainers to use when debugging gdb. */ | |
4133 | int target_async_permitted = 1; | |
c6ebd6cf VP |
4134 | |
4135 | /* The set command writes to this variable. If the inferior is | |
b5419e49 | 4136 | executing, target_async_permitted is *not* updated. */ |
329ea579 | 4137 | static int target_async_permitted_1 = 1; |
c6ebd6cf VP |
4138 | |
4139 | static void | |
329ea579 PA |
4140 | maint_set_target_async_command (char *args, int from_tty, |
4141 | struct cmd_list_element *c) | |
c6ebd6cf | 4142 | { |
c35b1492 | 4143 | if (have_live_inferiors ()) |
c6ebd6cf VP |
4144 | { |
4145 | target_async_permitted_1 = target_async_permitted; | |
4146 | error (_("Cannot change this setting while the inferior is running.")); | |
4147 | } | |
4148 | ||
4149 | target_async_permitted = target_async_permitted_1; | |
4150 | } | |
4151 | ||
4152 | static void | |
329ea579 PA |
4153 | maint_show_target_async_command (struct ui_file *file, int from_tty, |
4154 | struct cmd_list_element *c, | |
4155 | const char *value) | |
c6ebd6cf | 4156 | { |
3e43a32a MS |
4157 | fprintf_filtered (file, |
4158 | _("Controlling the inferior in " | |
4159 | "asynchronous mode is %s.\n"), value); | |
c6ebd6cf VP |
4160 | } |
4161 | ||
d914c394 SS |
4162 | /* Temporary copies of permission settings. */ |
4163 | ||
4164 | static int may_write_registers_1 = 1; | |
4165 | static int may_write_memory_1 = 1; | |
4166 | static int may_insert_breakpoints_1 = 1; | |
4167 | static int may_insert_tracepoints_1 = 1; | |
4168 | static int may_insert_fast_tracepoints_1 = 1; | |
4169 | static int may_stop_1 = 1; | |
4170 | ||
4171 | /* Make the user-set values match the real values again. */ | |
4172 | ||
4173 | void | |
4174 | update_target_permissions (void) | |
4175 | { | |
4176 | may_write_registers_1 = may_write_registers; | |
4177 | may_write_memory_1 = may_write_memory; | |
4178 | may_insert_breakpoints_1 = may_insert_breakpoints; | |
4179 | may_insert_tracepoints_1 = may_insert_tracepoints; | |
4180 | may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints; | |
4181 | may_stop_1 = may_stop; | |
4182 | } | |
4183 | ||
4184 | /* The one function handles (most of) the permission flags in the same | |
4185 | way. */ | |
4186 | ||
4187 | static void | |
4188 | set_target_permissions (char *args, int from_tty, | |
4189 | struct cmd_list_element *c) | |
4190 | { | |
4191 | if (target_has_execution) | |
4192 | { | |
4193 | update_target_permissions (); | |
4194 | error (_("Cannot change this setting while the inferior is running.")); | |
4195 | } | |
4196 | ||
4197 | /* Make the real values match the user-changed values. */ | |
4198 | may_write_registers = may_write_registers_1; | |
4199 | may_insert_breakpoints = may_insert_breakpoints_1; | |
4200 | may_insert_tracepoints = may_insert_tracepoints_1; | |
4201 | may_insert_fast_tracepoints = may_insert_fast_tracepoints_1; | |
4202 | may_stop = may_stop_1; | |
4203 | update_observer_mode (); | |
4204 | } | |
4205 | ||
4206 | /* Set memory write permission independently of observer mode. */ | |
4207 | ||
4208 | static void | |
4209 | set_write_memory_permission (char *args, int from_tty, | |
4210 | struct cmd_list_element *c) | |
4211 | { | |
4212 | /* Make the real values match the user-changed values. */ | |
4213 | may_write_memory = may_write_memory_1; | |
4214 | update_observer_mode (); | |
4215 | } | |
4216 | ||
4217 | ||
c906108c | 4218 | void |
fba45db2 | 4219 | initialize_targets (void) |
c906108c SS |
4220 | { |
4221 | init_dummy_target (); | |
4222 | push_target (&dummy_target); | |
4223 | ||
4224 | add_info ("target", target_info, targ_desc); | |
4225 | add_info ("files", target_info, targ_desc); | |
4226 | ||
ccce17b0 | 4227 | add_setshow_zuinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
85c07804 AC |
4228 | Set target debugging."), _("\ |
4229 | Show target debugging."), _("\ | |
333dabeb DJ |
4230 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
4231 | verbose. Changes do not take effect until the next \"run\" or \"target\"\n\ | |
85c07804 | 4232 | command."), |
ccce17b0 YQ |
4233 | NULL, |
4234 | show_targetdebug, | |
4235 | &setdebuglist, &showdebuglist); | |
3a11626d | 4236 | |
2bc416ba | 4237 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
4238 | &trust_readonly, _("\ |
4239 | Set mode for reading from readonly sections."), _("\ | |
4240 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
4241 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
4242 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 4243 | result in significant performance improvement for remote targets."), |
2c5b56ce | 4244 | NULL, |
920d2a44 | 4245 | show_trust_readonly, |
e707bbc2 | 4246 | &setlist, &showlist); |
96baa820 JM |
4247 | |
4248 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 4249 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 4250 | |
87680a14 JB |
4251 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
4252 | _("Print the name of each layer of the internal target stack."), | |
4253 | &maintenanceprintlist); | |
4254 | ||
c6ebd6cf VP |
4255 | add_setshow_boolean_cmd ("target-async", no_class, |
4256 | &target_async_permitted_1, _("\ | |
4257 | Set whether gdb controls the inferior in asynchronous mode."), _("\ | |
4258 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
4259 | Tells gdb whether to control the inferior in asynchronous mode."), | |
329ea579 PA |
4260 | maint_set_target_async_command, |
4261 | maint_show_target_async_command, | |
4262 | &maintenance_set_cmdlist, | |
4263 | &maintenance_show_cmdlist); | |
c6ebd6cf | 4264 | |
d914c394 SS |
4265 | add_setshow_boolean_cmd ("may-write-registers", class_support, |
4266 | &may_write_registers_1, _("\ | |
4267 | Set permission to write into registers."), _("\ | |
4268 | Show permission to write into registers."), _("\ | |
4269 | When this permission is on, GDB may write into the target's registers.\n\ | |
4270 | Otherwise, any sort of write attempt will result in an error."), | |
4271 | set_target_permissions, NULL, | |
4272 | &setlist, &showlist); | |
4273 | ||
4274 | add_setshow_boolean_cmd ("may-write-memory", class_support, | |
4275 | &may_write_memory_1, _("\ | |
4276 | Set permission to write into target memory."), _("\ | |
4277 | Show permission to write into target memory."), _("\ | |
4278 | When this permission is on, GDB may write into the target's memory.\n\ | |
4279 | Otherwise, any sort of write attempt will result in an error."), | |
4280 | set_write_memory_permission, NULL, | |
4281 | &setlist, &showlist); | |
4282 | ||
4283 | add_setshow_boolean_cmd ("may-insert-breakpoints", class_support, | |
4284 | &may_insert_breakpoints_1, _("\ | |
4285 | Set permission to insert breakpoints in the target."), _("\ | |
4286 | Show permission to insert breakpoints in the target."), _("\ | |
4287 | When this permission is on, GDB may insert breakpoints in the program.\n\ | |
4288 | Otherwise, any sort of insertion attempt will result in an error."), | |
4289 | set_target_permissions, NULL, | |
4290 | &setlist, &showlist); | |
4291 | ||
4292 | add_setshow_boolean_cmd ("may-insert-tracepoints", class_support, | |
4293 | &may_insert_tracepoints_1, _("\ | |
4294 | Set permission to insert tracepoints in the target."), _("\ | |
4295 | Show permission to insert tracepoints in the target."), _("\ | |
4296 | When this permission is on, GDB may insert tracepoints in the program.\n\ | |
4297 | Otherwise, any sort of insertion attempt will result in an error."), | |
4298 | set_target_permissions, NULL, | |
4299 | &setlist, &showlist); | |
4300 | ||
4301 | add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support, | |
4302 | &may_insert_fast_tracepoints_1, _("\ | |
4303 | Set permission to insert fast tracepoints in the target."), _("\ | |
4304 | Show permission to insert fast tracepoints in the target."), _("\ | |
4305 | When this permission is on, GDB may insert fast tracepoints.\n\ | |
4306 | Otherwise, any sort of insertion attempt will result in an error."), | |
4307 | set_target_permissions, NULL, | |
4308 | &setlist, &showlist); | |
4309 | ||
4310 | add_setshow_boolean_cmd ("may-interrupt", class_support, | |
4311 | &may_stop_1, _("\ | |
4312 | Set permission to interrupt or signal the target."), _("\ | |
4313 | Show permission to interrupt or signal the target."), _("\ | |
4314 | When this permission is on, GDB may interrupt/stop the target's execution.\n\ | |
4315 | Otherwise, any attempt to interrupt or stop will be ignored."), | |
4316 | set_target_permissions, NULL, | |
4317 | &setlist, &showlist); | |
6a3cb8e8 PA |
4318 | |
4319 | add_setshow_boolean_cmd ("auto-connect-native-target", class_support, | |
4320 | &auto_connect_native_target, _("\ | |
4321 | Set whether GDB may automatically connect to the native target."), _("\ | |
4322 | Show whether GDB may automatically connect to the native target."), _("\ | |
4323 | When on, and GDB is not connected to a target yet, GDB\n\ | |
4324 | attempts \"run\" and other commands with the native target."), | |
4325 | NULL, show_auto_connect_native_target, | |
4326 | &setlist, &showlist); | |
c906108c | 4327 | } |