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