Commit | Line | Data |
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c906108c | 1 | /* Select target systems and architectures at runtime for GDB. |
7998dfc3 | 2 | |
ecd75fc8 | 3 | Copyright (C) 1990-2014 Free Software Foundation, Inc. |
7998dfc3 | 4 | |
c906108c SS |
5 | Contributed by Cygnus Support. |
6 | ||
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
23 | #include <errno.h> | |
0e9f083f | 24 | #include <string.h> |
c906108c | 25 | #include "target.h" |
68c765e2 | 26 | #include "target-dcache.h" |
c906108c SS |
27 | #include "gdbcmd.h" |
28 | #include "symtab.h" | |
29 | #include "inferior.h" | |
30 | #include "bfd.h" | |
31 | #include "symfile.h" | |
32 | #include "objfiles.h" | |
4930751a | 33 | #include "dcache.h" |
c906108c | 34 | #include <signal.h> |
4e052eda | 35 | #include "regcache.h" |
0088c768 | 36 | #include "gdb_assert.h" |
b6591e8b | 37 | #include "gdbcore.h" |
9e35dae4 | 38 | #include "exceptions.h" |
424163ea | 39 | #include "target-descriptions.h" |
e1ac3328 | 40 | #include "gdbthread.h" |
b9db4ced | 41 | #include "solib.h" |
07b82ea5 | 42 | #include "exec.h" |
edb3359d | 43 | #include "inline-frame.h" |
2f4d8875 | 44 | #include "tracepoint.h" |
7313baad | 45 | #include "gdb/fileio.h" |
8ffcbaaf | 46 | #include "agent.h" |
8de71aab | 47 | #include "auxv.h" |
c906108c | 48 | |
a14ed312 | 49 | static void target_info (char *, int); |
c906108c | 50 | |
0a4f40a2 | 51 | static void default_terminal_info (struct target_ops *, const char *, int); |
c906108c | 52 | |
5009afc5 AS |
53 | static int default_watchpoint_addr_within_range (struct target_ops *, |
54 | CORE_ADDR, CORE_ADDR, int); | |
55 | ||
31568a15 TT |
56 | static int default_region_ok_for_hw_watchpoint (struct target_ops *, |
57 | CORE_ADDR, int); | |
e0d24f8d | 58 | |
a53f3625 TT |
59 | static void default_rcmd (struct target_ops *, char *, struct ui_file *); |
60 | ||
4229b31d TT |
61 | static ptid_t default_get_ada_task_ptid (struct target_ops *self, |
62 | long lwp, long tid); | |
63 | ||
098dba18 TT |
64 | static int default_follow_fork (struct target_ops *self, int follow_child, |
65 | int detach_fork); | |
66 | ||
8d657035 TT |
67 | static void default_mourn_inferior (struct target_ops *self); |
68 | ||
58a5184e TT |
69 | static int default_search_memory (struct target_ops *ops, |
70 | CORE_ADDR start_addr, | |
71 | ULONGEST search_space_len, | |
72 | const gdb_byte *pattern, | |
73 | ULONGEST pattern_len, | |
74 | CORE_ADDR *found_addrp); | |
75 | ||
c25c4a8b | 76 | static void tcomplain (void) ATTRIBUTE_NORETURN; |
c906108c | 77 | |
555bbdeb TT |
78 | static int return_zero (struct target_ops *); |
79 | ||
80 | static int return_zero_has_execution (struct target_ops *, ptid_t); | |
c906108c | 81 | |
a14ed312 | 82 | static void target_command (char *, int); |
c906108c | 83 | |
a14ed312 | 84 | static struct target_ops *find_default_run_target (char *); |
c906108c | 85 | |
c2250ad1 UW |
86 | static struct gdbarch *default_thread_architecture (struct target_ops *ops, |
87 | ptid_t ptid); | |
88 | ||
0b5a2719 TT |
89 | static int dummy_find_memory_regions (struct target_ops *self, |
90 | find_memory_region_ftype ignore1, | |
91 | void *ignore2); | |
92 | ||
16f796b1 TT |
93 | static char *dummy_make_corefile_notes (struct target_ops *self, |
94 | bfd *ignore1, int *ignore2); | |
95 | ||
770234d3 TT |
96 | static char *default_pid_to_str (struct target_ops *ops, ptid_t ptid); |
97 | ||
6b84065d TT |
98 | static int find_default_can_async_p (struct target_ops *ignore); |
99 | ||
100 | static int find_default_is_async_p (struct target_ops *ignore); | |
101 | ||
fe31bf5b TT |
102 | static enum exec_direction_kind default_execution_direction |
103 | (struct target_ops *self); | |
104 | ||
c0eca49f TT |
105 | static CORE_ADDR default_target_decr_pc_after_break (struct target_ops *ops, |
106 | struct gdbarch *gdbarch); | |
107 | ||
1101cb7b TT |
108 | #include "target-delegates.c" |
109 | ||
a14ed312 | 110 | static void init_dummy_target (void); |
c906108c | 111 | |
aa869812 AC |
112 | static struct target_ops debug_target; |
113 | ||
a14ed312 | 114 | static void debug_to_open (char *, int); |
c906108c | 115 | |
f32dbf8c MM |
116 | static void debug_to_prepare_to_store (struct target_ops *self, |
117 | struct regcache *); | |
c906108c | 118 | |
a14ed312 | 119 | static void debug_to_files_info (struct target_ops *); |
c906108c | 120 | |
3db08215 | 121 | static int debug_to_insert_breakpoint (struct target_ops *, struct gdbarch *, |
a6d9a66e | 122 | struct bp_target_info *); |
c906108c | 123 | |
3db08215 | 124 | static int debug_to_remove_breakpoint (struct target_ops *, struct gdbarch *, |
a6d9a66e | 125 | struct bp_target_info *); |
c906108c | 126 | |
5461485a TT |
127 | static int debug_to_can_use_hw_breakpoint (struct target_ops *self, |
128 | int, int, int); | |
ccaa32c7 | 129 | |
23a26771 TT |
130 | static int debug_to_insert_hw_breakpoint (struct target_ops *self, |
131 | struct gdbarch *, | |
a6d9a66e | 132 | struct bp_target_info *); |
ccaa32c7 | 133 | |
a64dc96c TT |
134 | static int debug_to_remove_hw_breakpoint (struct target_ops *self, |
135 | struct gdbarch *, | |
a6d9a66e | 136 | struct bp_target_info *); |
ccaa32c7 | 137 | |
7bb99c53 TT |
138 | static int debug_to_insert_watchpoint (struct target_ops *self, |
139 | CORE_ADDR, int, int, | |
0cf6dd15 | 140 | struct expression *); |
ccaa32c7 | 141 | |
11b5219a TT |
142 | static int debug_to_remove_watchpoint (struct target_ops *self, |
143 | CORE_ADDR, int, int, | |
0cf6dd15 | 144 | struct expression *); |
ccaa32c7 | 145 | |
4aa7a7f5 | 146 | static int debug_to_stopped_data_address (struct target_ops *, CORE_ADDR *); |
ccaa32c7 | 147 | |
5009afc5 AS |
148 | static int debug_to_watchpoint_addr_within_range (struct target_ops *, |
149 | CORE_ADDR, CORE_ADDR, int); | |
150 | ||
31568a15 TT |
151 | static int debug_to_region_ok_for_hw_watchpoint (struct target_ops *self, |
152 | CORE_ADDR, int); | |
e0d24f8d | 153 | |
c3a5ff89 TT |
154 | static int debug_to_can_accel_watchpoint_condition (struct target_ops *self, |
155 | CORE_ADDR, int, int, | |
0cf6dd15 TJB |
156 | struct expression *); |
157 | ||
c42bf286 | 158 | static void debug_to_terminal_init (struct target_ops *self); |
c906108c | 159 | |
d2f640d4 | 160 | static void debug_to_terminal_inferior (struct target_ops *self); |
c906108c | 161 | |
2e1e1a19 | 162 | static void debug_to_terminal_ours_for_output (struct target_ops *self); |
c906108c | 163 | |
ae3bd431 | 164 | static void debug_to_terminal_save_ours (struct target_ops *self); |
a790ad35 | 165 | |
e3594fd1 | 166 | static void debug_to_terminal_ours (struct target_ops *self); |
c906108c | 167 | |
71a9f134 | 168 | static void debug_to_load (struct target_ops *self, char *, int); |
c906108c | 169 | |
da82bd6b | 170 | static int debug_to_can_run (struct target_ops *self); |
c906108c | 171 | |
1eab8a48 | 172 | static void debug_to_stop (struct target_ops *self, ptid_t); |
c906108c | 173 | |
c906108c | 174 | /* Pointer to array of target architecture structures; the size of the |
2bc416ba | 175 | array; the current index into the array; the allocated size of the |
c906108c SS |
176 | array. */ |
177 | struct target_ops **target_structs; | |
178 | unsigned target_struct_size; | |
c906108c SS |
179 | unsigned target_struct_allocsize; |
180 | #define DEFAULT_ALLOCSIZE 10 | |
181 | ||
182 | /* The initial current target, so that there is always a semi-valid | |
183 | current target. */ | |
184 | ||
185 | static struct target_ops dummy_target; | |
186 | ||
187 | /* Top of target stack. */ | |
188 | ||
258b763a | 189 | static struct target_ops *target_stack; |
c906108c SS |
190 | |
191 | /* The target structure we are currently using to talk to a process | |
192 | or file or whatever "inferior" we have. */ | |
193 | ||
194 | struct target_ops current_target; | |
195 | ||
196 | /* Command list for target. */ | |
197 | ||
198 | static struct cmd_list_element *targetlist = NULL; | |
199 | ||
cf7a04e8 DJ |
200 | /* Nonzero if we should trust readonly sections from the |
201 | executable when reading memory. */ | |
202 | ||
203 | static int trust_readonly = 0; | |
204 | ||
8defab1a DJ |
205 | /* Nonzero if we should show true memory content including |
206 | memory breakpoint inserted by gdb. */ | |
207 | ||
208 | static int show_memory_breakpoints = 0; | |
209 | ||
d914c394 SS |
210 | /* These globals control whether GDB attempts to perform these |
211 | operations; they are useful for targets that need to prevent | |
212 | inadvertant disruption, such as in non-stop mode. */ | |
213 | ||
214 | int may_write_registers = 1; | |
215 | ||
216 | int may_write_memory = 1; | |
217 | ||
218 | int may_insert_breakpoints = 1; | |
219 | ||
220 | int may_insert_tracepoints = 1; | |
221 | ||
222 | int may_insert_fast_tracepoints = 1; | |
223 | ||
224 | int may_stop = 1; | |
225 | ||
c906108c SS |
226 | /* Non-zero if we want to see trace of target level stuff. */ |
227 | ||
ccce17b0 | 228 | static unsigned int targetdebug = 0; |
920d2a44 AC |
229 | static void |
230 | show_targetdebug (struct ui_file *file, int from_tty, | |
231 | struct cmd_list_element *c, const char *value) | |
232 | { | |
233 | fprintf_filtered (file, _("Target debugging is %s.\n"), value); | |
234 | } | |
c906108c | 235 | |
a14ed312 | 236 | static void setup_target_debug (void); |
c906108c | 237 | |
c906108c SS |
238 | /* The user just typed 'target' without the name of a target. */ |
239 | ||
c906108c | 240 | static void |
fba45db2 | 241 | target_command (char *arg, int from_tty) |
c906108c SS |
242 | { |
243 | fputs_filtered ("Argument required (target name). Try `help target'\n", | |
244 | gdb_stdout); | |
245 | } | |
246 | ||
c35b1492 PA |
247 | /* Default target_has_* methods for process_stratum targets. */ |
248 | ||
249 | int | |
250 | default_child_has_all_memory (struct target_ops *ops) | |
251 | { | |
252 | /* If no inferior selected, then we can't read memory here. */ | |
253 | if (ptid_equal (inferior_ptid, null_ptid)) | |
254 | return 0; | |
255 | ||
256 | return 1; | |
257 | } | |
258 | ||
259 | int | |
260 | default_child_has_memory (struct target_ops *ops) | |
261 | { | |
262 | /* If no inferior selected, then we can't read memory here. */ | |
263 | if (ptid_equal (inferior_ptid, null_ptid)) | |
264 | return 0; | |
265 | ||
266 | return 1; | |
267 | } | |
268 | ||
269 | int | |
270 | default_child_has_stack (struct target_ops *ops) | |
271 | { | |
272 | /* If no inferior selected, there's no stack. */ | |
273 | if (ptid_equal (inferior_ptid, null_ptid)) | |
274 | return 0; | |
275 | ||
276 | return 1; | |
277 | } | |
278 | ||
279 | int | |
280 | default_child_has_registers (struct target_ops *ops) | |
281 | { | |
282 | /* Can't read registers from no inferior. */ | |
283 | if (ptid_equal (inferior_ptid, null_ptid)) | |
284 | return 0; | |
285 | ||
286 | return 1; | |
287 | } | |
288 | ||
289 | int | |
aeaec162 | 290 | default_child_has_execution (struct target_ops *ops, ptid_t the_ptid) |
c35b1492 PA |
291 | { |
292 | /* If there's no thread selected, then we can't make it run through | |
293 | hoops. */ | |
aeaec162 | 294 | if (ptid_equal (the_ptid, null_ptid)) |
c35b1492 PA |
295 | return 0; |
296 | ||
297 | return 1; | |
298 | } | |
299 | ||
300 | ||
301 | int | |
302 | target_has_all_memory_1 (void) | |
303 | { | |
304 | struct target_ops *t; | |
305 | ||
306 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
307 | if (t->to_has_all_memory (t)) | |
308 | return 1; | |
309 | ||
310 | return 0; | |
311 | } | |
312 | ||
313 | int | |
314 | target_has_memory_1 (void) | |
315 | { | |
316 | struct target_ops *t; | |
317 | ||
318 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
319 | if (t->to_has_memory (t)) | |
320 | return 1; | |
321 | ||
322 | return 0; | |
323 | } | |
324 | ||
325 | int | |
326 | target_has_stack_1 (void) | |
327 | { | |
328 | struct target_ops *t; | |
329 | ||
330 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
331 | if (t->to_has_stack (t)) | |
332 | return 1; | |
333 | ||
334 | return 0; | |
335 | } | |
336 | ||
337 | int | |
338 | target_has_registers_1 (void) | |
339 | { | |
340 | struct target_ops *t; | |
341 | ||
342 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
343 | if (t->to_has_registers (t)) | |
344 | return 1; | |
345 | ||
346 | return 0; | |
347 | } | |
348 | ||
349 | int | |
aeaec162 | 350 | target_has_execution_1 (ptid_t the_ptid) |
c35b1492 PA |
351 | { |
352 | struct target_ops *t; | |
353 | ||
354 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
aeaec162 | 355 | if (t->to_has_execution (t, the_ptid)) |
c35b1492 PA |
356 | return 1; |
357 | ||
358 | return 0; | |
359 | } | |
360 | ||
aeaec162 TT |
361 | int |
362 | target_has_execution_current (void) | |
363 | { | |
364 | return target_has_execution_1 (inferior_ptid); | |
365 | } | |
366 | ||
c22a2b88 TT |
367 | /* Complete initialization of T. This ensures that various fields in |
368 | T are set, if needed by the target implementation. */ | |
c906108c SS |
369 | |
370 | void | |
c22a2b88 | 371 | complete_target_initialization (struct target_ops *t) |
c906108c | 372 | { |
0088c768 | 373 | /* Provide default values for all "must have" methods. */ |
0088c768 | 374 | |
c35b1492 | 375 | if (t->to_has_all_memory == NULL) |
555bbdeb | 376 | t->to_has_all_memory = return_zero; |
c35b1492 PA |
377 | |
378 | if (t->to_has_memory == NULL) | |
555bbdeb | 379 | t->to_has_memory = return_zero; |
c35b1492 PA |
380 | |
381 | if (t->to_has_stack == NULL) | |
555bbdeb | 382 | t->to_has_stack = return_zero; |
c35b1492 PA |
383 | |
384 | if (t->to_has_registers == NULL) | |
555bbdeb | 385 | t->to_has_registers = return_zero; |
c35b1492 PA |
386 | |
387 | if (t->to_has_execution == NULL) | |
555bbdeb | 388 | t->to_has_execution = return_zero_has_execution; |
1101cb7b TT |
389 | |
390 | install_delegators (t); | |
c22a2b88 TT |
391 | } |
392 | ||
393 | /* Add possible target architecture T to the list and add a new | |
394 | command 'target T->to_shortname'. Set COMPLETER as the command's | |
395 | completer if not NULL. */ | |
396 | ||
397 | void | |
398 | add_target_with_completer (struct target_ops *t, | |
399 | completer_ftype *completer) | |
400 | { | |
401 | struct cmd_list_element *c; | |
402 | ||
403 | complete_target_initialization (t); | |
c35b1492 | 404 | |
c906108c SS |
405 | if (!target_structs) |
406 | { | |
407 | target_struct_allocsize = DEFAULT_ALLOCSIZE; | |
408 | target_structs = (struct target_ops **) xmalloc | |
409 | (target_struct_allocsize * sizeof (*target_structs)); | |
410 | } | |
411 | if (target_struct_size >= target_struct_allocsize) | |
412 | { | |
413 | target_struct_allocsize *= 2; | |
414 | target_structs = (struct target_ops **) | |
c5aa993b JM |
415 | xrealloc ((char *) target_structs, |
416 | target_struct_allocsize * sizeof (*target_structs)); | |
c906108c SS |
417 | } |
418 | target_structs[target_struct_size++] = t; | |
c906108c SS |
419 | |
420 | if (targetlist == NULL) | |
1bedd215 AC |
421 | add_prefix_cmd ("target", class_run, target_command, _("\ |
422 | Connect to a target machine or process.\n\ | |
c906108c SS |
423 | The first argument is the type or protocol of the target machine.\n\ |
424 | Remaining arguments are interpreted by the target protocol. For more\n\ | |
425 | information on the arguments for a particular protocol, type\n\ | |
1bedd215 | 426 | `help target ' followed by the protocol name."), |
c906108c | 427 | &targetlist, "target ", 0, &cmdlist); |
9852c492 YQ |
428 | c = add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc, |
429 | &targetlist); | |
430 | if (completer != NULL) | |
431 | set_cmd_completer (c, completer); | |
432 | } | |
433 | ||
434 | /* Add a possible target architecture to the list. */ | |
435 | ||
436 | void | |
437 | add_target (struct target_ops *t) | |
438 | { | |
439 | add_target_with_completer (t, NULL); | |
c906108c SS |
440 | } |
441 | ||
b48d48eb MM |
442 | /* See target.h. */ |
443 | ||
444 | void | |
445 | add_deprecated_target_alias (struct target_ops *t, char *alias) | |
446 | { | |
447 | struct cmd_list_element *c; | |
448 | char *alt; | |
449 | ||
450 | /* If we use add_alias_cmd, here, we do not get the deprecated warning, | |
451 | see PR cli/15104. */ | |
452 | c = add_cmd (alias, no_class, t->to_open, t->to_doc, &targetlist); | |
453 | alt = xstrprintf ("target %s", t->to_shortname); | |
454 | deprecate_cmd (c, alt); | |
455 | } | |
456 | ||
c906108c SS |
457 | /* Stub functions */ |
458 | ||
7d85a9c0 JB |
459 | void |
460 | target_kill (void) | |
461 | { | |
423a4807 TT |
462 | if (targetdebug) |
463 | fprintf_unfiltered (gdb_stdlog, "target_kill ()\n"); | |
7d85a9c0 | 464 | |
423a4807 | 465 | current_target.to_kill (¤t_target); |
7d85a9c0 JB |
466 | } |
467 | ||
11cf8741 JM |
468 | void |
469 | target_load (char *arg, int from_tty) | |
470 | { | |
4e5d721f | 471 | target_dcache_invalidate (); |
71a9f134 | 472 | (*current_target.to_load) (¤t_target, arg, from_tty); |
11cf8741 JM |
473 | } |
474 | ||
947b8855 PA |
475 | void |
476 | target_create_inferior (char *exec_file, char *args, | |
477 | char **env, int from_tty) | |
136d6dae VP |
478 | { |
479 | struct target_ops *t; | |
5d502164 | 480 | |
136d6dae VP |
481 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
482 | { | |
483 | if (t->to_create_inferior != NULL) | |
484 | { | |
485 | t->to_create_inferior (t, exec_file, args, env, from_tty); | |
947b8855 PA |
486 | if (targetdebug) |
487 | fprintf_unfiltered (gdb_stdlog, | |
488 | "target_create_inferior (%s, %s, xxx, %d)\n", | |
489 | exec_file, args, from_tty); | |
136d6dae VP |
490 | return; |
491 | } | |
492 | } | |
493 | ||
494 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 495 | _("could not find a target to create inferior")); |
136d6dae VP |
496 | } |
497 | ||
d9d2d8b6 PA |
498 | void |
499 | target_terminal_inferior (void) | |
500 | { | |
501 | /* A background resume (``run&'') should leave GDB in control of the | |
c378eb4e | 502 | terminal. Use target_can_async_p, not target_is_async_p, since at |
ba7f6c64 VP |
503 | this point the target is not async yet. However, if sync_execution |
504 | is not set, we know it will become async prior to resume. */ | |
505 | if (target_can_async_p () && !sync_execution) | |
d9d2d8b6 PA |
506 | return; |
507 | ||
508 | /* If GDB is resuming the inferior in the foreground, install | |
509 | inferior's terminal modes. */ | |
d2f640d4 | 510 | (*current_target.to_terminal_inferior) (¤t_target); |
d9d2d8b6 | 511 | } |
136d6dae | 512 | |
c906108c | 513 | static void |
fba45db2 | 514 | tcomplain (void) |
c906108c | 515 | { |
8a3fe4f8 | 516 | error (_("You can't do that when your target is `%s'"), |
c906108c SS |
517 | current_target.to_shortname); |
518 | } | |
519 | ||
520 | void | |
fba45db2 | 521 | noprocess (void) |
c906108c | 522 | { |
8a3fe4f8 | 523 | error (_("You can't do that without a process to debug.")); |
c906108c SS |
524 | } |
525 | ||
c906108c | 526 | static void |
0a4f40a2 | 527 | default_terminal_info (struct target_ops *self, const char *args, int from_tty) |
c906108c | 528 | { |
a3f17187 | 529 | printf_unfiltered (_("No saved terminal information.\n")); |
c906108c SS |
530 | } |
531 | ||
0ef643c8 JB |
532 | /* A default implementation for the to_get_ada_task_ptid target method. |
533 | ||
534 | This function builds the PTID by using both LWP and TID as part of | |
535 | the PTID lwp and tid elements. The pid used is the pid of the | |
536 | inferior_ptid. */ | |
537 | ||
2c0b251b | 538 | static ptid_t |
1e6b91a4 | 539 | default_get_ada_task_ptid (struct target_ops *self, long lwp, long tid) |
0ef643c8 JB |
540 | { |
541 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid); | |
542 | } | |
543 | ||
32231432 | 544 | static enum exec_direction_kind |
4c612759 | 545 | default_execution_direction (struct target_ops *self) |
32231432 PA |
546 | { |
547 | if (!target_can_execute_reverse) | |
548 | return EXEC_FORWARD; | |
549 | else if (!target_can_async_p ()) | |
550 | return EXEC_FORWARD; | |
551 | else | |
552 | gdb_assert_not_reached ("\ | |
553 | to_execution_direction must be implemented for reverse async"); | |
554 | } | |
555 | ||
7998dfc3 AC |
556 | /* Go through the target stack from top to bottom, copying over zero |
557 | entries in current_target, then filling in still empty entries. In | |
558 | effect, we are doing class inheritance through the pushed target | |
559 | vectors. | |
560 | ||
561 | NOTE: cagney/2003-10-17: The problem with this inheritance, as it | |
562 | is currently implemented, is that it discards any knowledge of | |
563 | which target an inherited method originally belonged to. | |
564 | Consequently, new new target methods should instead explicitly and | |
565 | locally search the target stack for the target that can handle the | |
566 | request. */ | |
c906108c SS |
567 | |
568 | static void | |
7998dfc3 | 569 | update_current_target (void) |
c906108c | 570 | { |
7998dfc3 AC |
571 | struct target_ops *t; |
572 | ||
08d8bcd7 | 573 | /* First, reset current's contents. */ |
7998dfc3 AC |
574 | memset (¤t_target, 0, sizeof (current_target)); |
575 | ||
1101cb7b TT |
576 | /* Install the delegators. */ |
577 | install_delegators (¤t_target); | |
578 | ||
be4ddd36 TT |
579 | current_target.to_stratum = target_stack->to_stratum; |
580 | ||
7998dfc3 AC |
581 | #define INHERIT(FIELD, TARGET) \ |
582 | if (!current_target.FIELD) \ | |
583 | current_target.FIELD = (TARGET)->FIELD | |
584 | ||
be4ddd36 TT |
585 | /* Do not add any new INHERITs here. Instead, use the delegation |
586 | mechanism provided by make-target-delegates. */ | |
7998dfc3 AC |
587 | for (t = target_stack; t; t = t->beneath) |
588 | { | |
589 | INHERIT (to_shortname, t); | |
590 | INHERIT (to_longname, t); | |
dc177b7a | 591 | INHERIT (to_attach_no_wait, t); |
74174d2e | 592 | INHERIT (to_have_steppable_watchpoint, t); |
7998dfc3 | 593 | INHERIT (to_have_continuable_watchpoint, t); |
7998dfc3 | 594 | INHERIT (to_has_thread_control, t); |
7998dfc3 AC |
595 | } |
596 | #undef INHERIT | |
597 | ||
7998dfc3 AC |
598 | /* Finally, position the target-stack beneath the squashed |
599 | "current_target". That way code looking for a non-inherited | |
600 | target method can quickly and simply find it. */ | |
601 | current_target.beneath = target_stack; | |
b4b61fdb DJ |
602 | |
603 | if (targetdebug) | |
604 | setup_target_debug (); | |
c906108c SS |
605 | } |
606 | ||
607 | /* Push a new target type into the stack of the existing target accessors, | |
608 | possibly superseding some of the existing accessors. | |
609 | ||
c906108c SS |
610 | Rather than allow an empty stack, we always have the dummy target at |
611 | the bottom stratum, so we can call the function vectors without | |
612 | checking them. */ | |
613 | ||
b26a4dcb | 614 | void |
fba45db2 | 615 | push_target (struct target_ops *t) |
c906108c | 616 | { |
258b763a | 617 | struct target_ops **cur; |
c906108c SS |
618 | |
619 | /* Check magic number. If wrong, it probably means someone changed | |
620 | the struct definition, but not all the places that initialize one. */ | |
621 | if (t->to_magic != OPS_MAGIC) | |
622 | { | |
c5aa993b JM |
623 | fprintf_unfiltered (gdb_stderr, |
624 | "Magic number of %s target struct wrong\n", | |
625 | t->to_shortname); | |
3e43a32a MS |
626 | internal_error (__FILE__, __LINE__, |
627 | _("failed internal consistency check")); | |
c906108c SS |
628 | } |
629 | ||
258b763a AC |
630 | /* Find the proper stratum to install this target in. */ |
631 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
c906108c | 632 | { |
258b763a | 633 | if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum) |
c906108c SS |
634 | break; |
635 | } | |
636 | ||
258b763a | 637 | /* If there's already targets at this stratum, remove them. */ |
88c231eb | 638 | /* FIXME: cagney/2003-10-15: I think this should be popping all |
258b763a AC |
639 | targets to CUR, and not just those at this stratum level. */ |
640 | while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum) | |
641 | { | |
642 | /* There's already something at this stratum level. Close it, | |
643 | and un-hook it from the stack. */ | |
644 | struct target_ops *tmp = (*cur); | |
5d502164 | 645 | |
258b763a AC |
646 | (*cur) = (*cur)->beneath; |
647 | tmp->beneath = NULL; | |
460014f5 | 648 | target_close (tmp); |
258b763a | 649 | } |
c906108c SS |
650 | |
651 | /* We have removed all targets in our stratum, now add the new one. */ | |
258b763a AC |
652 | t->beneath = (*cur); |
653 | (*cur) = t; | |
c906108c SS |
654 | |
655 | update_current_target (); | |
c906108c SS |
656 | } |
657 | ||
2bc416ba | 658 | /* Remove a target_ops vector from the stack, wherever it may be. |
c906108c SS |
659 | Return how many times it was removed (0 or 1). */ |
660 | ||
661 | int | |
fba45db2 | 662 | unpush_target (struct target_ops *t) |
c906108c | 663 | { |
258b763a AC |
664 | struct target_ops **cur; |
665 | struct target_ops *tmp; | |
c906108c | 666 | |
c8d104ad PA |
667 | if (t->to_stratum == dummy_stratum) |
668 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 669 | _("Attempt to unpush the dummy target")); |
c8d104ad | 670 | |
c906108c | 671 | /* Look for the specified target. Note that we assume that a target |
c378eb4e | 672 | can only occur once in the target stack. */ |
c906108c | 673 | |
258b763a AC |
674 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) |
675 | { | |
676 | if ((*cur) == t) | |
677 | break; | |
678 | } | |
c906108c | 679 | |
305436e0 PA |
680 | /* If we don't find target_ops, quit. Only open targets should be |
681 | closed. */ | |
258b763a | 682 | if ((*cur) == NULL) |
305436e0 | 683 | return 0; |
5269965e | 684 | |
c378eb4e | 685 | /* Unchain the target. */ |
258b763a AC |
686 | tmp = (*cur); |
687 | (*cur) = (*cur)->beneath; | |
688 | tmp->beneath = NULL; | |
c906108c SS |
689 | |
690 | update_current_target (); | |
c906108c | 691 | |
305436e0 PA |
692 | /* Finally close the target. Note we do this after unchaining, so |
693 | any target method calls from within the target_close | |
694 | implementation don't end up in T anymore. */ | |
460014f5 | 695 | target_close (t); |
305436e0 | 696 | |
c906108c SS |
697 | return 1; |
698 | } | |
699 | ||
aa76d38d | 700 | void |
460014f5 | 701 | pop_all_targets_above (enum strata above_stratum) |
aa76d38d | 702 | { |
87ab71f0 | 703 | while ((int) (current_target.to_stratum) > (int) above_stratum) |
aa76d38d | 704 | { |
aa76d38d PA |
705 | if (!unpush_target (target_stack)) |
706 | { | |
707 | fprintf_unfiltered (gdb_stderr, | |
708 | "pop_all_targets couldn't find target %s\n", | |
b52323fa | 709 | target_stack->to_shortname); |
aa76d38d PA |
710 | internal_error (__FILE__, __LINE__, |
711 | _("failed internal consistency check")); | |
712 | break; | |
713 | } | |
714 | } | |
715 | } | |
716 | ||
87ab71f0 | 717 | void |
460014f5 | 718 | pop_all_targets (void) |
87ab71f0 | 719 | { |
460014f5 | 720 | pop_all_targets_above (dummy_stratum); |
87ab71f0 PA |
721 | } |
722 | ||
c0edd9ed JK |
723 | /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */ |
724 | ||
725 | int | |
726 | target_is_pushed (struct target_ops *t) | |
727 | { | |
728 | struct target_ops **cur; | |
729 | ||
730 | /* Check magic number. If wrong, it probably means someone changed | |
731 | the struct definition, but not all the places that initialize one. */ | |
732 | if (t->to_magic != OPS_MAGIC) | |
733 | { | |
734 | fprintf_unfiltered (gdb_stderr, | |
735 | "Magic number of %s target struct wrong\n", | |
736 | t->to_shortname); | |
3e43a32a MS |
737 | internal_error (__FILE__, __LINE__, |
738 | _("failed internal consistency check")); | |
c0edd9ed JK |
739 | } |
740 | ||
741 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
742 | if (*cur == t) | |
743 | return 1; | |
744 | ||
745 | return 0; | |
746 | } | |
747 | ||
72f5cf0e | 748 | /* Using the objfile specified in OBJFILE, find the address for the |
9e35dae4 DJ |
749 | current thread's thread-local storage with offset OFFSET. */ |
750 | CORE_ADDR | |
751 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) | |
752 | { | |
753 | volatile CORE_ADDR addr = 0; | |
117de6a9 PA |
754 | struct target_ops *target; |
755 | ||
756 | for (target = current_target.beneath; | |
757 | target != NULL; | |
758 | target = target->beneath) | |
759 | { | |
760 | if (target->to_get_thread_local_address != NULL) | |
761 | break; | |
762 | } | |
9e35dae4 | 763 | |
117de6a9 | 764 | if (target != NULL |
f5656ead | 765 | && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ())) |
9e35dae4 DJ |
766 | { |
767 | ptid_t ptid = inferior_ptid; | |
768 | volatile struct gdb_exception ex; | |
769 | ||
770 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
771 | { | |
772 | CORE_ADDR lm_addr; | |
773 | ||
774 | /* Fetch the load module address for this objfile. */ | |
f5656ead | 775 | lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch (), |
9e35dae4 DJ |
776 | objfile); |
777 | /* If it's 0, throw the appropriate exception. */ | |
778 | if (lm_addr == 0) | |
779 | throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR, | |
780 | _("TLS load module not found")); | |
781 | ||
3e43a32a MS |
782 | addr = target->to_get_thread_local_address (target, ptid, |
783 | lm_addr, offset); | |
9e35dae4 DJ |
784 | } |
785 | /* If an error occurred, print TLS related messages here. Otherwise, | |
786 | throw the error to some higher catcher. */ | |
787 | if (ex.reason < 0) | |
788 | { | |
789 | int objfile_is_library = (objfile->flags & OBJF_SHARED); | |
790 | ||
791 | switch (ex.error) | |
792 | { | |
793 | case TLS_NO_LIBRARY_SUPPORT_ERROR: | |
3e43a32a MS |
794 | error (_("Cannot find thread-local variables " |
795 | "in this thread library.")); | |
9e35dae4 DJ |
796 | break; |
797 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: | |
798 | if (objfile_is_library) | |
799 | error (_("Cannot find shared library `%s' in dynamic" | |
4262abfb | 800 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
801 | else |
802 | error (_("Cannot find executable file `%s' in dynamic" | |
4262abfb | 803 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
804 | break; |
805 | case TLS_NOT_ALLOCATED_YET_ERROR: | |
806 | if (objfile_is_library) | |
807 | error (_("The inferior has not yet allocated storage for" | |
808 | " thread-local variables in\n" | |
809 | "the shared library `%s'\n" | |
810 | "for %s"), | |
4262abfb | 811 | objfile_name (objfile), target_pid_to_str (ptid)); |
9e35dae4 DJ |
812 | else |
813 | error (_("The inferior has not yet allocated storage for" | |
814 | " thread-local variables in\n" | |
815 | "the executable `%s'\n" | |
816 | "for %s"), | |
4262abfb | 817 | objfile_name (objfile), target_pid_to_str (ptid)); |
9e35dae4 DJ |
818 | break; |
819 | case TLS_GENERIC_ERROR: | |
820 | if (objfile_is_library) | |
821 | error (_("Cannot find thread-local storage for %s, " | |
822 | "shared library %s:\n%s"), | |
823 | target_pid_to_str (ptid), | |
4262abfb | 824 | objfile_name (objfile), ex.message); |
9e35dae4 DJ |
825 | else |
826 | error (_("Cannot find thread-local storage for %s, " | |
827 | "executable file %s:\n%s"), | |
828 | target_pid_to_str (ptid), | |
4262abfb | 829 | objfile_name (objfile), ex.message); |
9e35dae4 DJ |
830 | break; |
831 | default: | |
832 | throw_exception (ex); | |
833 | break; | |
834 | } | |
835 | } | |
836 | } | |
837 | /* It wouldn't be wrong here to try a gdbarch method, too; finding | |
838 | TLS is an ABI-specific thing. But we don't do that yet. */ | |
839 | else | |
840 | error (_("Cannot find thread-local variables on this target")); | |
841 | ||
842 | return addr; | |
843 | } | |
844 | ||
6be7b56e | 845 | const char * |
01cb8804 | 846 | target_xfer_status_to_string (enum target_xfer_status status) |
6be7b56e PA |
847 | { |
848 | #define CASE(X) case X: return #X | |
01cb8804 | 849 | switch (status) |
6be7b56e PA |
850 | { |
851 | CASE(TARGET_XFER_E_IO); | |
bc113b4e | 852 | CASE(TARGET_XFER_UNAVAILABLE); |
6be7b56e PA |
853 | default: |
854 | return "<unknown>"; | |
855 | } | |
856 | #undef CASE | |
857 | }; | |
858 | ||
859 | ||
c906108c SS |
860 | #undef MIN |
861 | #define MIN(A, B) (((A) <= (B)) ? (A) : (B)) | |
862 | ||
863 | /* target_read_string -- read a null terminated string, up to LEN bytes, | |
864 | from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful. | |
865 | Set *STRING to a pointer to malloc'd memory containing the data; the caller | |
866 | is responsible for freeing it. Return the number of bytes successfully | |
867 | read. */ | |
868 | ||
869 | int | |
fba45db2 | 870 | target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop) |
c906108c | 871 | { |
c2e8b827 | 872 | int tlen, offset, i; |
1b0ba102 | 873 | gdb_byte buf[4]; |
c906108c SS |
874 | int errcode = 0; |
875 | char *buffer; | |
876 | int buffer_allocated; | |
877 | char *bufptr; | |
878 | unsigned int nbytes_read = 0; | |
879 | ||
6217bf3e MS |
880 | gdb_assert (string); |
881 | ||
c906108c SS |
882 | /* Small for testing. */ |
883 | buffer_allocated = 4; | |
884 | buffer = xmalloc (buffer_allocated); | |
885 | bufptr = buffer; | |
886 | ||
c906108c SS |
887 | while (len > 0) |
888 | { | |
889 | tlen = MIN (len, 4 - (memaddr & 3)); | |
890 | offset = memaddr & 3; | |
891 | ||
1b0ba102 | 892 | errcode = target_read_memory (memaddr & ~3, buf, sizeof buf); |
c906108c SS |
893 | if (errcode != 0) |
894 | { | |
895 | /* The transfer request might have crossed the boundary to an | |
c378eb4e | 896 | unallocated region of memory. Retry the transfer, requesting |
c906108c SS |
897 | a single byte. */ |
898 | tlen = 1; | |
899 | offset = 0; | |
b8eb5af0 | 900 | errcode = target_read_memory (memaddr, buf, 1); |
c906108c SS |
901 | if (errcode != 0) |
902 | goto done; | |
903 | } | |
904 | ||
905 | if (bufptr - buffer + tlen > buffer_allocated) | |
906 | { | |
907 | unsigned int bytes; | |
5d502164 | 908 | |
c906108c SS |
909 | bytes = bufptr - buffer; |
910 | buffer_allocated *= 2; | |
911 | buffer = xrealloc (buffer, buffer_allocated); | |
912 | bufptr = buffer + bytes; | |
913 | } | |
914 | ||
915 | for (i = 0; i < tlen; i++) | |
916 | { | |
917 | *bufptr++ = buf[i + offset]; | |
918 | if (buf[i + offset] == '\000') | |
919 | { | |
920 | nbytes_read += i + 1; | |
921 | goto done; | |
922 | } | |
923 | } | |
924 | ||
925 | memaddr += tlen; | |
926 | len -= tlen; | |
927 | nbytes_read += tlen; | |
928 | } | |
c5aa993b | 929 | done: |
6217bf3e | 930 | *string = buffer; |
c906108c SS |
931 | if (errnop != NULL) |
932 | *errnop = errcode; | |
c906108c SS |
933 | return nbytes_read; |
934 | } | |
935 | ||
07b82ea5 PA |
936 | struct target_section_table * |
937 | target_get_section_table (struct target_ops *target) | |
938 | { | |
07b82ea5 PA |
939 | if (targetdebug) |
940 | fprintf_unfiltered (gdb_stdlog, "target_get_section_table ()\n"); | |
941 | ||
7e35c012 | 942 | return (*target->to_get_section_table) (target); |
07b82ea5 PA |
943 | } |
944 | ||
8db32d44 | 945 | /* Find a section containing ADDR. */ |
07b82ea5 | 946 | |
0542c86d | 947 | struct target_section * |
8db32d44 AC |
948 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
949 | { | |
07b82ea5 | 950 | struct target_section_table *table = target_get_section_table (target); |
0542c86d | 951 | struct target_section *secp; |
07b82ea5 PA |
952 | |
953 | if (table == NULL) | |
954 | return NULL; | |
955 | ||
956 | for (secp = table->sections; secp < table->sections_end; secp++) | |
8db32d44 AC |
957 | { |
958 | if (addr >= secp->addr && addr < secp->endaddr) | |
959 | return secp; | |
960 | } | |
961 | return NULL; | |
962 | } | |
963 | ||
e6e4e701 PA |
964 | /* Read memory from the live target, even if currently inspecting a |
965 | traceframe. The return is the same as that of target_read. */ | |
966 | ||
9b409511 | 967 | static enum target_xfer_status |
e6e4e701 | 968 | target_read_live_memory (enum target_object object, |
9b409511 YQ |
969 | ULONGEST memaddr, gdb_byte *myaddr, ULONGEST len, |
970 | ULONGEST *xfered_len) | |
e6e4e701 | 971 | { |
9b409511 | 972 | enum target_xfer_status ret; |
e6e4e701 PA |
973 | struct cleanup *cleanup; |
974 | ||
975 | /* Switch momentarily out of tfind mode so to access live memory. | |
976 | Note that this must not clear global state, such as the frame | |
977 | cache, which must still remain valid for the previous traceframe. | |
978 | We may be _building_ the frame cache at this point. */ | |
979 | cleanup = make_cleanup_restore_traceframe_number (); | |
980 | set_traceframe_number (-1); | |
981 | ||
9b409511 YQ |
982 | ret = target_xfer_partial (current_target.beneath, object, NULL, |
983 | myaddr, NULL, memaddr, len, xfered_len); | |
e6e4e701 PA |
984 | |
985 | do_cleanups (cleanup); | |
986 | return ret; | |
987 | } | |
988 | ||
989 | /* Using the set of read-only target sections of OPS, read live | |
990 | read-only memory. Note that the actual reads start from the | |
5657161f PA |
991 | top-most target again. |
992 | ||
993 | For interface/parameters/return description see target.h, | |
994 | to_xfer_partial. */ | |
e6e4e701 | 995 | |
9b409511 | 996 | static enum target_xfer_status |
e6e4e701 PA |
997 | memory_xfer_live_readonly_partial (struct target_ops *ops, |
998 | enum target_object object, | |
999 | gdb_byte *readbuf, ULONGEST memaddr, | |
9b409511 | 1000 | ULONGEST len, ULONGEST *xfered_len) |
e6e4e701 PA |
1001 | { |
1002 | struct target_section *secp; | |
1003 | struct target_section_table *table; | |
1004 | ||
1005 | secp = target_section_by_addr (ops, memaddr); | |
1006 | if (secp != NULL | |
2b2848e2 DE |
1007 | && (bfd_get_section_flags (secp->the_bfd_section->owner, |
1008 | secp->the_bfd_section) | |
e6e4e701 PA |
1009 | & SEC_READONLY)) |
1010 | { | |
1011 | struct target_section *p; | |
1012 | ULONGEST memend = memaddr + len; | |
1013 | ||
1014 | table = target_get_section_table (ops); | |
1015 | ||
1016 | for (p = table->sections; p < table->sections_end; p++) | |
1017 | { | |
1018 | if (memaddr >= p->addr) | |
1019 | { | |
1020 | if (memend <= p->endaddr) | |
1021 | { | |
1022 | /* Entire transfer is within this section. */ | |
1023 | return target_read_live_memory (object, memaddr, | |
9b409511 | 1024 | readbuf, len, xfered_len); |
e6e4e701 PA |
1025 | } |
1026 | else if (memaddr >= p->endaddr) | |
1027 | { | |
1028 | /* This section ends before the transfer starts. */ | |
1029 | continue; | |
1030 | } | |
1031 | else | |
1032 | { | |
1033 | /* This section overlaps the transfer. Just do half. */ | |
1034 | len = p->endaddr - memaddr; | |
1035 | return target_read_live_memory (object, memaddr, | |
9b409511 | 1036 | readbuf, len, xfered_len); |
e6e4e701 PA |
1037 | } |
1038 | } | |
1039 | } | |
1040 | } | |
1041 | ||
9b409511 | 1042 | return TARGET_XFER_EOF; |
e6e4e701 PA |
1043 | } |
1044 | ||
9f713294 YQ |
1045 | /* Read memory from more than one valid target. A core file, for |
1046 | instance, could have some of memory but delegate other bits to | |
1047 | the target below it. So, we must manually try all targets. */ | |
1048 | ||
9b409511 | 1049 | static enum target_xfer_status |
17fde6d0 | 1050 | raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf, |
9b409511 YQ |
1051 | const gdb_byte *writebuf, ULONGEST memaddr, LONGEST len, |
1052 | ULONGEST *xfered_len) | |
9f713294 | 1053 | { |
9b409511 | 1054 | enum target_xfer_status res; |
9f713294 YQ |
1055 | |
1056 | do | |
1057 | { | |
1058 | res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 YQ |
1059 | readbuf, writebuf, memaddr, len, |
1060 | xfered_len); | |
1061 | if (res == TARGET_XFER_OK) | |
9f713294 YQ |
1062 | break; |
1063 | ||
633785ff | 1064 | /* Stop if the target reports that the memory is not available. */ |
bc113b4e | 1065 | if (res == TARGET_XFER_UNAVAILABLE) |
633785ff MM |
1066 | break; |
1067 | ||
9f713294 YQ |
1068 | /* We want to continue past core files to executables, but not |
1069 | past a running target's memory. */ | |
1070 | if (ops->to_has_all_memory (ops)) | |
1071 | break; | |
1072 | ||
1073 | ops = ops->beneath; | |
1074 | } | |
1075 | while (ops != NULL); | |
1076 | ||
1077 | return res; | |
1078 | } | |
1079 | ||
7f79c47e DE |
1080 | /* Perform a partial memory transfer. |
1081 | For docs see target.h, to_xfer_partial. */ | |
cf7a04e8 | 1082 | |
9b409511 | 1083 | static enum target_xfer_status |
f0ba3972 | 1084 | memory_xfer_partial_1 (struct target_ops *ops, enum target_object object, |
17fde6d0 | 1085 | gdb_byte *readbuf, const gdb_byte *writebuf, ULONGEST memaddr, |
9b409511 | 1086 | ULONGEST len, ULONGEST *xfered_len) |
0779438d | 1087 | { |
9b409511 | 1088 | enum target_xfer_status res; |
cf7a04e8 DJ |
1089 | int reg_len; |
1090 | struct mem_region *region; | |
4e5d721f | 1091 | struct inferior *inf; |
cf7a04e8 | 1092 | |
07b82ea5 PA |
1093 | /* For accesses to unmapped overlay sections, read directly from |
1094 | files. Must do this first, as MEMADDR may need adjustment. */ | |
1095 | if (readbuf != NULL && overlay_debugging) | |
1096 | { | |
1097 | struct obj_section *section = find_pc_overlay (memaddr); | |
5d502164 | 1098 | |
07b82ea5 PA |
1099 | if (pc_in_unmapped_range (memaddr, section)) |
1100 | { | |
1101 | struct target_section_table *table | |
1102 | = target_get_section_table (ops); | |
1103 | const char *section_name = section->the_bfd_section->name; | |
5d502164 | 1104 | |
07b82ea5 PA |
1105 | memaddr = overlay_mapped_address (memaddr, section); |
1106 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 1107 | memaddr, len, xfered_len, |
07b82ea5 PA |
1108 | table->sections, |
1109 | table->sections_end, | |
1110 | section_name); | |
1111 | } | |
1112 | } | |
1113 | ||
1114 | /* Try the executable files, if "trust-readonly-sections" is set. */ | |
cf7a04e8 DJ |
1115 | if (readbuf != NULL && trust_readonly) |
1116 | { | |
0542c86d | 1117 | struct target_section *secp; |
07b82ea5 | 1118 | struct target_section_table *table; |
cf7a04e8 DJ |
1119 | |
1120 | secp = target_section_by_addr (ops, memaddr); | |
1121 | if (secp != NULL | |
2b2848e2 DE |
1122 | && (bfd_get_section_flags (secp->the_bfd_section->owner, |
1123 | secp->the_bfd_section) | |
cf7a04e8 | 1124 | & SEC_READONLY)) |
07b82ea5 PA |
1125 | { |
1126 | table = target_get_section_table (ops); | |
1127 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 1128 | memaddr, len, xfered_len, |
07b82ea5 PA |
1129 | table->sections, |
1130 | table->sections_end, | |
1131 | NULL); | |
1132 | } | |
98646950 UW |
1133 | } |
1134 | ||
e6e4e701 PA |
1135 | /* If reading unavailable memory in the context of traceframes, and |
1136 | this address falls within a read-only section, fallback to | |
1137 | reading from live memory. */ | |
1138 | if (readbuf != NULL && get_traceframe_number () != -1) | |
1139 | { | |
1140 | VEC(mem_range_s) *available; | |
1141 | ||
1142 | /* If we fail to get the set of available memory, then the | |
1143 | target does not support querying traceframe info, and so we | |
1144 | attempt reading from the traceframe anyway (assuming the | |
1145 | target implements the old QTro packet then). */ | |
1146 | if (traceframe_available_memory (&available, memaddr, len)) | |
1147 | { | |
1148 | struct cleanup *old_chain; | |
1149 | ||
1150 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available); | |
1151 | ||
1152 | if (VEC_empty (mem_range_s, available) | |
1153 | || VEC_index (mem_range_s, available, 0)->start != memaddr) | |
1154 | { | |
1155 | /* Don't read into the traceframe's available | |
1156 | memory. */ | |
1157 | if (!VEC_empty (mem_range_s, available)) | |
1158 | { | |
1159 | LONGEST oldlen = len; | |
1160 | ||
1161 | len = VEC_index (mem_range_s, available, 0)->start - memaddr; | |
1162 | gdb_assert (len <= oldlen); | |
1163 | } | |
1164 | ||
1165 | do_cleanups (old_chain); | |
1166 | ||
1167 | /* This goes through the topmost target again. */ | |
1168 | res = memory_xfer_live_readonly_partial (ops, object, | |
9b409511 YQ |
1169 | readbuf, memaddr, |
1170 | len, xfered_len); | |
1171 | if (res == TARGET_XFER_OK) | |
1172 | return TARGET_XFER_OK; | |
1173 | else | |
1174 | { | |
1175 | /* No use trying further, we know some memory starting | |
1176 | at MEMADDR isn't available. */ | |
1177 | *xfered_len = len; | |
bc113b4e | 1178 | return TARGET_XFER_UNAVAILABLE; |
9b409511 | 1179 | } |
e6e4e701 PA |
1180 | } |
1181 | ||
1182 | /* Don't try to read more than how much is available, in | |
1183 | case the target implements the deprecated QTro packet to | |
1184 | cater for older GDBs (the target's knowledge of read-only | |
1185 | sections may be outdated by now). */ | |
1186 | len = VEC_index (mem_range_s, available, 0)->length; | |
1187 | ||
1188 | do_cleanups (old_chain); | |
1189 | } | |
1190 | } | |
1191 | ||
cf7a04e8 DJ |
1192 | /* Try GDB's internal data cache. */ |
1193 | region = lookup_mem_region (memaddr); | |
4b5752d0 VP |
1194 | /* region->hi == 0 means there's no upper bound. */ |
1195 | if (memaddr + len < region->hi || region->hi == 0) | |
cf7a04e8 DJ |
1196 | reg_len = len; |
1197 | else | |
1198 | reg_len = region->hi - memaddr; | |
1199 | ||
1200 | switch (region->attrib.mode) | |
1201 | { | |
1202 | case MEM_RO: | |
1203 | if (writebuf != NULL) | |
2ed4b548 | 1204 | return TARGET_XFER_E_IO; |
cf7a04e8 DJ |
1205 | break; |
1206 | ||
1207 | case MEM_WO: | |
1208 | if (readbuf != NULL) | |
2ed4b548 | 1209 | return TARGET_XFER_E_IO; |
cf7a04e8 | 1210 | break; |
a76d924d DJ |
1211 | |
1212 | case MEM_FLASH: | |
1213 | /* We only support writing to flash during "load" for now. */ | |
1214 | if (writebuf != NULL) | |
1215 | error (_("Writing to flash memory forbidden in this context")); | |
1216 | break; | |
4b5752d0 VP |
1217 | |
1218 | case MEM_NONE: | |
2ed4b548 | 1219 | return TARGET_XFER_E_IO; |
cf7a04e8 DJ |
1220 | } |
1221 | ||
6c95b8df PA |
1222 | if (!ptid_equal (inferior_ptid, null_ptid)) |
1223 | inf = find_inferior_pid (ptid_get_pid (inferior_ptid)); | |
1224 | else | |
1225 | inf = NULL; | |
4e5d721f DE |
1226 | |
1227 | if (inf != NULL | |
2f4d8875 PA |
1228 | /* The dcache reads whole cache lines; that doesn't play well |
1229 | with reading from a trace buffer, because reading outside of | |
1230 | the collected memory range fails. */ | |
1231 | && get_traceframe_number () == -1 | |
4e5d721f | 1232 | && (region->attrib.cache |
29453a14 YQ |
1233 | || (stack_cache_enabled_p () && object == TARGET_OBJECT_STACK_MEMORY) |
1234 | || (code_cache_enabled_p () && object == TARGET_OBJECT_CODE_MEMORY))) | |
cf7a04e8 | 1235 | { |
2a2f9fe4 | 1236 | DCACHE *dcache = target_dcache_get_or_init (); |
9b409511 | 1237 | int l; |
2a2f9fe4 | 1238 | |
cf7a04e8 | 1239 | if (readbuf != NULL) |
9b409511 | 1240 | l = dcache_xfer_memory (ops, dcache, memaddr, readbuf, reg_len, 0); |
cf7a04e8 DJ |
1241 | else |
1242 | /* FIXME drow/2006-08-09: If we're going to preserve const | |
1243 | correctness dcache_xfer_memory should take readbuf and | |
1244 | writebuf. */ | |
9b409511 | 1245 | l = dcache_xfer_memory (ops, dcache, memaddr, (void *) writebuf, |
cf7a04e8 | 1246 | reg_len, 1); |
9b409511 YQ |
1247 | if (l <= 0) |
1248 | return TARGET_XFER_E_IO; | |
cf7a04e8 | 1249 | else |
9b409511 YQ |
1250 | { |
1251 | *xfered_len = (ULONGEST) l; | |
1252 | return TARGET_XFER_OK; | |
1253 | } | |
cf7a04e8 DJ |
1254 | } |
1255 | ||
1256 | /* If none of those methods found the memory we wanted, fall back | |
1257 | to a target partial transfer. Normally a single call to | |
1258 | to_xfer_partial is enough; if it doesn't recognize an object | |
1259 | it will call the to_xfer_partial of the next target down. | |
1260 | But for memory this won't do. Memory is the only target | |
9b409511 YQ |
1261 | object which can be read from more than one valid target. |
1262 | A core file, for instance, could have some of memory but | |
1263 | delegate other bits to the target below it. So, we must | |
1264 | manually try all targets. */ | |
1265 | ||
1266 | res = raw_memory_xfer_partial (ops, readbuf, writebuf, memaddr, reg_len, | |
1267 | xfered_len); | |
cf7a04e8 | 1268 | |
41dcd03f DE |
1269 | /* Make sure the cache gets updated no matter what - if we are writing |
1270 | to the stack. Even if this write is not tagged as such, we still need | |
1271 | to update the cache. */ | |
1272 | ||
9b409511 | 1273 | if (res == TARGET_XFER_OK |
41dcd03f DE |
1274 | && inf != NULL |
1275 | && writebuf != NULL | |
f2de9785 | 1276 | && target_dcache_init_p () |
41dcd03f | 1277 | && !region->attrib.cache |
29453a14 YQ |
1278 | && ((stack_cache_enabled_p () && object != TARGET_OBJECT_STACK_MEMORY) |
1279 | || (code_cache_enabled_p () && object != TARGET_OBJECT_CODE_MEMORY))) | |
41dcd03f | 1280 | { |
f2de9785 | 1281 | DCACHE *dcache = target_dcache_get (); |
2a2f9fe4 | 1282 | |
9b409511 | 1283 | dcache_update (dcache, memaddr, (void *) writebuf, reg_len); |
41dcd03f DE |
1284 | } |
1285 | ||
cf7a04e8 DJ |
1286 | /* If we still haven't got anything, return the last error. We |
1287 | give up. */ | |
1288 | return res; | |
0779438d AC |
1289 | } |
1290 | ||
f0ba3972 PA |
1291 | /* Perform a partial memory transfer. For docs see target.h, |
1292 | to_xfer_partial. */ | |
1293 | ||
9b409511 | 1294 | static enum target_xfer_status |
f0ba3972 | 1295 | memory_xfer_partial (struct target_ops *ops, enum target_object object, |
9b409511 YQ |
1296 | gdb_byte *readbuf, const gdb_byte *writebuf, |
1297 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) | |
f0ba3972 | 1298 | { |
9b409511 | 1299 | enum target_xfer_status res; |
f0ba3972 PA |
1300 | |
1301 | /* Zero length requests are ok and require no work. */ | |
1302 | if (len == 0) | |
9b409511 | 1303 | return TARGET_XFER_EOF; |
f0ba3972 PA |
1304 | |
1305 | /* Fill in READBUF with breakpoint shadows, or WRITEBUF with | |
1306 | breakpoint insns, thus hiding out from higher layers whether | |
1307 | there are software breakpoints inserted in the code stream. */ | |
1308 | if (readbuf != NULL) | |
1309 | { | |
9b409511 YQ |
1310 | res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len, |
1311 | xfered_len); | |
f0ba3972 | 1312 | |
9b409511 | 1313 | if (res == TARGET_XFER_OK && !show_memory_breakpoints) |
c63528fc | 1314 | breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, *xfered_len); |
f0ba3972 PA |
1315 | } |
1316 | else | |
1317 | { | |
1318 | void *buf; | |
1319 | struct cleanup *old_chain; | |
1320 | ||
67c059c2 AB |
1321 | /* A large write request is likely to be partially satisfied |
1322 | by memory_xfer_partial_1. We will continually malloc | |
1323 | and free a copy of the entire write request for breakpoint | |
1324 | shadow handling even though we only end up writing a small | |
1325 | subset of it. Cap writes to 4KB to mitigate this. */ | |
1326 | len = min (4096, len); | |
1327 | ||
f0ba3972 PA |
1328 | buf = xmalloc (len); |
1329 | old_chain = make_cleanup (xfree, buf); | |
1330 | memcpy (buf, writebuf, len); | |
1331 | ||
1332 | breakpoint_xfer_memory (NULL, buf, writebuf, memaddr, len); | |
9b409511 YQ |
1333 | res = memory_xfer_partial_1 (ops, object, NULL, buf, memaddr, len, |
1334 | xfered_len); | |
f0ba3972 PA |
1335 | |
1336 | do_cleanups (old_chain); | |
1337 | } | |
1338 | ||
1339 | return res; | |
1340 | } | |
1341 | ||
8defab1a DJ |
1342 | static void |
1343 | restore_show_memory_breakpoints (void *arg) | |
1344 | { | |
1345 | show_memory_breakpoints = (uintptr_t) arg; | |
1346 | } | |
1347 | ||
1348 | struct cleanup * | |
1349 | make_show_memory_breakpoints_cleanup (int show) | |
1350 | { | |
1351 | int current = show_memory_breakpoints; | |
8defab1a | 1352 | |
5d502164 | 1353 | show_memory_breakpoints = show; |
8defab1a DJ |
1354 | return make_cleanup (restore_show_memory_breakpoints, |
1355 | (void *) (uintptr_t) current); | |
1356 | } | |
1357 | ||
7f79c47e DE |
1358 | /* For docs see target.h, to_xfer_partial. */ |
1359 | ||
9b409511 | 1360 | enum target_xfer_status |
27394598 AC |
1361 | target_xfer_partial (struct target_ops *ops, |
1362 | enum target_object object, const char *annex, | |
4ac248ca | 1363 | gdb_byte *readbuf, const gdb_byte *writebuf, |
9b409511 YQ |
1364 | ULONGEST offset, ULONGEST len, |
1365 | ULONGEST *xfered_len) | |
27394598 | 1366 | { |
9b409511 | 1367 | enum target_xfer_status retval; |
27394598 AC |
1368 | |
1369 | gdb_assert (ops->to_xfer_partial != NULL); | |
cf7a04e8 | 1370 | |
ce6d0892 YQ |
1371 | /* Transfer is done when LEN is zero. */ |
1372 | if (len == 0) | |
9b409511 | 1373 | return TARGET_XFER_EOF; |
ce6d0892 | 1374 | |
d914c394 SS |
1375 | if (writebuf && !may_write_memory) |
1376 | error (_("Writing to memory is not allowed (addr %s, len %s)"), | |
1377 | core_addr_to_string_nz (offset), plongest (len)); | |
1378 | ||
9b409511 YQ |
1379 | *xfered_len = 0; |
1380 | ||
cf7a04e8 DJ |
1381 | /* If this is a memory transfer, let the memory-specific code |
1382 | have a look at it instead. Memory transfers are more | |
1383 | complicated. */ | |
29453a14 YQ |
1384 | if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY |
1385 | || object == TARGET_OBJECT_CODE_MEMORY) | |
4e5d721f | 1386 | retval = memory_xfer_partial (ops, object, readbuf, |
9b409511 | 1387 | writebuf, offset, len, xfered_len); |
9f713294 | 1388 | else if (object == TARGET_OBJECT_RAW_MEMORY) |
cf7a04e8 | 1389 | { |
9f713294 | 1390 | /* Request the normal memory object from other layers. */ |
9b409511 YQ |
1391 | retval = raw_memory_xfer_partial (ops, readbuf, writebuf, offset, len, |
1392 | xfered_len); | |
cf7a04e8 | 1393 | } |
9f713294 YQ |
1394 | else |
1395 | retval = ops->to_xfer_partial (ops, object, annex, readbuf, | |
9b409511 | 1396 | writebuf, offset, len, xfered_len); |
cf7a04e8 | 1397 | |
27394598 AC |
1398 | if (targetdebug) |
1399 | { | |
1400 | const unsigned char *myaddr = NULL; | |
1401 | ||
1402 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a | 1403 | "%s:target_xfer_partial " |
9b409511 | 1404 | "(%d, %s, %s, %s, %s, %s) = %d, %s", |
27394598 AC |
1405 | ops->to_shortname, |
1406 | (int) object, | |
1407 | (annex ? annex : "(null)"), | |
53b71562 JB |
1408 | host_address_to_string (readbuf), |
1409 | host_address_to_string (writebuf), | |
0b1553bc | 1410 | core_addr_to_string_nz (offset), |
9b409511 YQ |
1411 | pulongest (len), retval, |
1412 | pulongest (*xfered_len)); | |
27394598 AC |
1413 | |
1414 | if (readbuf) | |
1415 | myaddr = readbuf; | |
1416 | if (writebuf) | |
1417 | myaddr = writebuf; | |
9b409511 | 1418 | if (retval == TARGET_XFER_OK && myaddr != NULL) |
27394598 AC |
1419 | { |
1420 | int i; | |
2bc416ba | 1421 | |
27394598 | 1422 | fputs_unfiltered (", bytes =", gdb_stdlog); |
9b409511 | 1423 | for (i = 0; i < *xfered_len; i++) |
27394598 | 1424 | { |
53b71562 | 1425 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1426 | { |
1427 | if (targetdebug < 2 && i > 0) | |
1428 | { | |
1429 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
1430 | break; | |
1431 | } | |
1432 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1433 | } | |
2bc416ba | 1434 | |
27394598 AC |
1435 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
1436 | } | |
1437 | } | |
2bc416ba | 1438 | |
27394598 AC |
1439 | fputc_unfiltered ('\n', gdb_stdlog); |
1440 | } | |
9b409511 YQ |
1441 | |
1442 | /* Check implementations of to_xfer_partial update *XFERED_LEN | |
1443 | properly. Do assertion after printing debug messages, so that we | |
1444 | can find more clues on assertion failure from debugging messages. */ | |
bc113b4e | 1445 | if (retval == TARGET_XFER_OK || retval == TARGET_XFER_UNAVAILABLE) |
9b409511 YQ |
1446 | gdb_assert (*xfered_len > 0); |
1447 | ||
27394598 AC |
1448 | return retval; |
1449 | } | |
1450 | ||
578d3588 PA |
1451 | /* Read LEN bytes of target memory at address MEMADDR, placing the |
1452 | results in GDB's memory at MYADDR. Returns either 0 for success or | |
9b409511 | 1453 | TARGET_XFER_E_IO if any error occurs. |
c906108c SS |
1454 | |
1455 | If an error occurs, no guarantee is made about the contents of the data at | |
1456 | MYADDR. In particular, the caller should not depend upon partial reads | |
1457 | filling the buffer with good data. There is no way for the caller to know | |
1458 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 | 1459 | deal with partial reads should call target_read (which will retry until |
c378eb4e | 1460 | it makes no progress, and then return how much was transferred). */ |
c906108c SS |
1461 | |
1462 | int | |
1b162304 | 1463 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
c906108c | 1464 | { |
c35b1492 PA |
1465 | /* Dispatch to the topmost target, not the flattened current_target. |
1466 | Memory accesses check target->to_has_(all_)memory, and the | |
1467 | flattened target doesn't inherit those. */ | |
1468 | if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1469 | myaddr, memaddr, len) == len) |
1470 | return 0; | |
0779438d | 1471 | else |
578d3588 | 1472 | return TARGET_XFER_E_IO; |
c906108c SS |
1473 | } |
1474 | ||
aee4bf85 PA |
1475 | /* Like target_read_memory, but specify explicitly that this is a read |
1476 | from the target's raw memory. That is, this read bypasses the | |
1477 | dcache, breakpoint shadowing, etc. */ | |
1478 | ||
1479 | int | |
1480 | target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1481 | { | |
1482 | /* See comment in target_read_memory about why the request starts at | |
1483 | current_target.beneath. */ | |
1484 | if (target_read (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, | |
1485 | myaddr, memaddr, len) == len) | |
1486 | return 0; | |
1487 | else | |
1488 | return TARGET_XFER_E_IO; | |
1489 | } | |
1490 | ||
4e5d721f DE |
1491 | /* Like target_read_memory, but specify explicitly that this is a read from |
1492 | the target's stack. This may trigger different cache behavior. */ | |
1493 | ||
1494 | int | |
45aa4659 | 1495 | target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
4e5d721f | 1496 | { |
aee4bf85 PA |
1497 | /* See comment in target_read_memory about why the request starts at |
1498 | current_target.beneath. */ | |
4e5d721f DE |
1499 | if (target_read (current_target.beneath, TARGET_OBJECT_STACK_MEMORY, NULL, |
1500 | myaddr, memaddr, len) == len) | |
1501 | return 0; | |
1502 | else | |
578d3588 | 1503 | return TARGET_XFER_E_IO; |
4e5d721f DE |
1504 | } |
1505 | ||
29453a14 YQ |
1506 | /* Like target_read_memory, but specify explicitly that this is a read from |
1507 | the target's code. This may trigger different cache behavior. */ | |
1508 | ||
1509 | int | |
1510 | target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1511 | { | |
aee4bf85 PA |
1512 | /* See comment in target_read_memory about why the request starts at |
1513 | current_target.beneath. */ | |
29453a14 YQ |
1514 | if (target_read (current_target.beneath, TARGET_OBJECT_CODE_MEMORY, NULL, |
1515 | myaddr, memaddr, len) == len) | |
1516 | return 0; | |
1517 | else | |
1518 | return TARGET_XFER_E_IO; | |
1519 | } | |
1520 | ||
7f79c47e | 1521 | /* Write LEN bytes from MYADDR to target memory at address MEMADDR. |
9b409511 | 1522 | Returns either 0 for success or TARGET_XFER_E_IO if any |
578d3588 PA |
1523 | error occurs. If an error occurs, no guarantee is made about how |
1524 | much data got written. Callers that can deal with partial writes | |
1525 | should call target_write. */ | |
7f79c47e | 1526 | |
c906108c | 1527 | int |
45aa4659 | 1528 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
c906108c | 1529 | { |
aee4bf85 PA |
1530 | /* See comment in target_read_memory about why the request starts at |
1531 | current_target.beneath. */ | |
c35b1492 | 1532 | if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, |
cf7a04e8 DJ |
1533 | myaddr, memaddr, len) == len) |
1534 | return 0; | |
0779438d | 1535 | else |
578d3588 | 1536 | return TARGET_XFER_E_IO; |
c906108c | 1537 | } |
c5aa993b | 1538 | |
f0ba3972 | 1539 | /* Write LEN bytes from MYADDR to target raw memory at address |
9b409511 | 1540 | MEMADDR. Returns either 0 for success or TARGET_XFER_E_IO |
578d3588 PA |
1541 | if any error occurs. If an error occurs, no guarantee is made |
1542 | about how much data got written. Callers that can deal with | |
1543 | partial writes should call target_write. */ | |
f0ba3972 PA |
1544 | |
1545 | int | |
45aa4659 | 1546 | target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
f0ba3972 | 1547 | { |
aee4bf85 PA |
1548 | /* See comment in target_read_memory about why the request starts at |
1549 | current_target.beneath. */ | |
f0ba3972 PA |
1550 | if (target_write (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, |
1551 | myaddr, memaddr, len) == len) | |
1552 | return 0; | |
1553 | else | |
578d3588 | 1554 | return TARGET_XFER_E_IO; |
f0ba3972 PA |
1555 | } |
1556 | ||
fd79ecee DJ |
1557 | /* Fetch the target's memory map. */ |
1558 | ||
1559 | VEC(mem_region_s) * | |
1560 | target_memory_map (void) | |
1561 | { | |
1562 | VEC(mem_region_s) *result; | |
1563 | struct mem_region *last_one, *this_one; | |
1564 | int ix; | |
1565 | struct target_ops *t; | |
1566 | ||
1567 | if (targetdebug) | |
1568 | fprintf_unfiltered (gdb_stdlog, "target_memory_map ()\n"); | |
1569 | ||
6b2c5a57 | 1570 | result = current_target.to_memory_map (¤t_target); |
fd79ecee DJ |
1571 | if (result == NULL) |
1572 | return NULL; | |
1573 | ||
1574 | qsort (VEC_address (mem_region_s, result), | |
1575 | VEC_length (mem_region_s, result), | |
1576 | sizeof (struct mem_region), mem_region_cmp); | |
1577 | ||
1578 | /* Check that regions do not overlap. Simultaneously assign | |
1579 | a numbering for the "mem" commands to use to refer to | |
1580 | each region. */ | |
1581 | last_one = NULL; | |
1582 | for (ix = 0; VEC_iterate (mem_region_s, result, ix, this_one); ix++) | |
1583 | { | |
1584 | this_one->number = ix; | |
1585 | ||
1586 | if (last_one && last_one->hi > this_one->lo) | |
1587 | { | |
1588 | warning (_("Overlapping regions in memory map: ignoring")); | |
1589 | VEC_free (mem_region_s, result); | |
1590 | return NULL; | |
1591 | } | |
1592 | last_one = this_one; | |
1593 | } | |
1594 | ||
1595 | return result; | |
1596 | } | |
1597 | ||
a76d924d DJ |
1598 | void |
1599 | target_flash_erase (ULONGEST address, LONGEST length) | |
1600 | { | |
e8a6c6ac TT |
1601 | if (targetdebug) |
1602 | fprintf_unfiltered (gdb_stdlog, "target_flash_erase (%s, %s)\n", | |
1603 | hex_string (address), phex (length, 0)); | |
1604 | current_target.to_flash_erase (¤t_target, address, length); | |
a76d924d DJ |
1605 | } |
1606 | ||
1607 | void | |
1608 | target_flash_done (void) | |
1609 | { | |
f6fb2925 TT |
1610 | if (targetdebug) |
1611 | fprintf_unfiltered (gdb_stdlog, "target_flash_done\n"); | |
1612 | current_target.to_flash_done (¤t_target); | |
a76d924d DJ |
1613 | } |
1614 | ||
920d2a44 AC |
1615 | static void |
1616 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1617 | struct cmd_list_element *c, const char *value) | |
1618 | { | |
3e43a32a MS |
1619 | fprintf_filtered (file, |
1620 | _("Mode for reading from readonly sections is %s.\n"), | |
920d2a44 AC |
1621 | value); |
1622 | } | |
3a11626d | 1623 | |
7f79c47e | 1624 | /* Target vector read/write partial wrapper functions. */ |
0088c768 | 1625 | |
9b409511 | 1626 | static enum target_xfer_status |
1e3ff5ad AC |
1627 | target_read_partial (struct target_ops *ops, |
1628 | enum target_object object, | |
1b0ba102 | 1629 | const char *annex, gdb_byte *buf, |
9b409511 YQ |
1630 | ULONGEST offset, ULONGEST len, |
1631 | ULONGEST *xfered_len) | |
1e3ff5ad | 1632 | { |
9b409511 YQ |
1633 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len, |
1634 | xfered_len); | |
1e3ff5ad AC |
1635 | } |
1636 | ||
8a55ffb0 | 1637 | static enum target_xfer_status |
1e3ff5ad AC |
1638 | target_write_partial (struct target_ops *ops, |
1639 | enum target_object object, | |
1b0ba102 | 1640 | const char *annex, const gdb_byte *buf, |
9b409511 | 1641 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len) |
1e3ff5ad | 1642 | { |
9b409511 YQ |
1643 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len, |
1644 | xfered_len); | |
1e3ff5ad AC |
1645 | } |
1646 | ||
1647 | /* Wrappers to perform the full transfer. */ | |
7f79c47e DE |
1648 | |
1649 | /* For docs on target_read see target.h. */ | |
1650 | ||
1e3ff5ad AC |
1651 | LONGEST |
1652 | target_read (struct target_ops *ops, | |
1653 | enum target_object object, | |
1b0ba102 | 1654 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1655 | ULONGEST offset, LONGEST len) |
1656 | { | |
1657 | LONGEST xfered = 0; | |
5d502164 | 1658 | |
1e3ff5ad AC |
1659 | while (xfered < len) |
1660 | { | |
9b409511 YQ |
1661 | ULONGEST xfered_len; |
1662 | enum target_xfer_status status; | |
1663 | ||
1664 | status = target_read_partial (ops, object, annex, | |
1665 | (gdb_byte *) buf + xfered, | |
1666 | offset + xfered, len - xfered, | |
1667 | &xfered_len); | |
5d502164 | 1668 | |
1e3ff5ad | 1669 | /* Call an observer, notifying them of the xfer progress? */ |
9b409511 | 1670 | if (status == TARGET_XFER_EOF) |
13547ab6 | 1671 | return xfered; |
9b409511 YQ |
1672 | else if (status == TARGET_XFER_OK) |
1673 | { | |
1674 | xfered += xfered_len; | |
1675 | QUIT; | |
1676 | } | |
1677 | else | |
0088c768 | 1678 | return -1; |
9b409511 | 1679 | |
1e3ff5ad AC |
1680 | } |
1681 | return len; | |
1682 | } | |
1683 | ||
f1a507a1 JB |
1684 | /* Assuming that the entire [begin, end) range of memory cannot be |
1685 | read, try to read whatever subrange is possible to read. | |
1686 | ||
1687 | The function returns, in RESULT, either zero or one memory block. | |
1688 | If there's a readable subrange at the beginning, it is completely | |
1689 | read and returned. Any further readable subrange will not be read. | |
1690 | Otherwise, if there's a readable subrange at the end, it will be | |
1691 | completely read and returned. Any readable subranges before it | |
1692 | (obviously, not starting at the beginning), will be ignored. In | |
1693 | other cases -- either no readable subrange, or readable subrange(s) | |
1694 | that is neither at the beginning, or end, nothing is returned. | |
1695 | ||
1696 | The purpose of this function is to handle a read across a boundary | |
1697 | of accessible memory in a case when memory map is not available. | |
1698 | The above restrictions are fine for this case, but will give | |
1699 | incorrect results if the memory is 'patchy'. However, supporting | |
1700 | 'patchy' memory would require trying to read every single byte, | |
1701 | and it seems unacceptable solution. Explicit memory map is | |
1702 | recommended for this case -- and target_read_memory_robust will | |
1703 | take care of reading multiple ranges then. */ | |
8dedea02 VP |
1704 | |
1705 | static void | |
3e43a32a MS |
1706 | read_whatever_is_readable (struct target_ops *ops, |
1707 | ULONGEST begin, ULONGEST end, | |
8dedea02 | 1708 | VEC(memory_read_result_s) **result) |
d5086790 | 1709 | { |
f1a507a1 | 1710 | gdb_byte *buf = xmalloc (end - begin); |
8dedea02 VP |
1711 | ULONGEST current_begin = begin; |
1712 | ULONGEST current_end = end; | |
1713 | int forward; | |
1714 | memory_read_result_s r; | |
9b409511 | 1715 | ULONGEST xfered_len; |
8dedea02 VP |
1716 | |
1717 | /* If we previously failed to read 1 byte, nothing can be done here. */ | |
1718 | if (end - begin <= 1) | |
13b3fd9b MS |
1719 | { |
1720 | xfree (buf); | |
1721 | return; | |
1722 | } | |
8dedea02 VP |
1723 | |
1724 | /* Check that either first or the last byte is readable, and give up | |
c378eb4e | 1725 | if not. This heuristic is meant to permit reading accessible memory |
8dedea02 VP |
1726 | at the boundary of accessible region. */ |
1727 | if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 | 1728 | buf, begin, 1, &xfered_len) == TARGET_XFER_OK) |
8dedea02 VP |
1729 | { |
1730 | forward = 1; | |
1731 | ++current_begin; | |
1732 | } | |
1733 | else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
9b409511 YQ |
1734 | buf + (end-begin) - 1, end - 1, 1, |
1735 | &xfered_len) == TARGET_XFER_OK) | |
8dedea02 VP |
1736 | { |
1737 | forward = 0; | |
1738 | --current_end; | |
1739 | } | |
1740 | else | |
1741 | { | |
13b3fd9b | 1742 | xfree (buf); |
8dedea02 VP |
1743 | return; |
1744 | } | |
1745 | ||
1746 | /* Loop invariant is that the [current_begin, current_end) was previously | |
1747 | found to be not readable as a whole. | |
1748 | ||
1749 | Note loop condition -- if the range has 1 byte, we can't divide the range | |
1750 | so there's no point trying further. */ | |
1751 | while (current_end - current_begin > 1) | |
1752 | { | |
1753 | ULONGEST first_half_begin, first_half_end; | |
1754 | ULONGEST second_half_begin, second_half_end; | |
1755 | LONGEST xfer; | |
8dedea02 | 1756 | ULONGEST middle = current_begin + (current_end - current_begin)/2; |
f1a507a1 | 1757 | |
8dedea02 VP |
1758 | if (forward) |
1759 | { | |
1760 | first_half_begin = current_begin; | |
1761 | first_half_end = middle; | |
1762 | second_half_begin = middle; | |
1763 | second_half_end = current_end; | |
1764 | } | |
1765 | else | |
1766 | { | |
1767 | first_half_begin = middle; | |
1768 | first_half_end = current_end; | |
1769 | second_half_begin = current_begin; | |
1770 | second_half_end = middle; | |
1771 | } | |
1772 | ||
1773 | xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
1774 | buf + (first_half_begin - begin), | |
1775 | first_half_begin, | |
1776 | first_half_end - first_half_begin); | |
1777 | ||
1778 | if (xfer == first_half_end - first_half_begin) | |
1779 | { | |
c378eb4e | 1780 | /* This half reads up fine. So, the error must be in the |
3e43a32a | 1781 | other half. */ |
8dedea02 VP |
1782 | current_begin = second_half_begin; |
1783 | current_end = second_half_end; | |
1784 | } | |
1785 | else | |
1786 | { | |
c378eb4e MS |
1787 | /* This half is not readable. Because we've tried one byte, we |
1788 | know some part of this half if actually redable. Go to the next | |
8dedea02 VP |
1789 | iteration to divide again and try to read. |
1790 | ||
1791 | We don't handle the other half, because this function only tries | |
1792 | to read a single readable subrange. */ | |
1793 | current_begin = first_half_begin; | |
1794 | current_end = first_half_end; | |
1795 | } | |
1796 | } | |
1797 | ||
1798 | if (forward) | |
1799 | { | |
1800 | /* The [begin, current_begin) range has been read. */ | |
1801 | r.begin = begin; | |
1802 | r.end = current_begin; | |
1803 | r.data = buf; | |
1804 | } | |
1805 | else | |
1806 | { | |
1807 | /* The [current_end, end) range has been read. */ | |
1808 | LONGEST rlen = end - current_end; | |
f1a507a1 | 1809 | |
8dedea02 VP |
1810 | r.data = xmalloc (rlen); |
1811 | memcpy (r.data, buf + current_end - begin, rlen); | |
1812 | r.begin = current_end; | |
1813 | r.end = end; | |
1814 | xfree (buf); | |
1815 | } | |
1816 | VEC_safe_push(memory_read_result_s, (*result), &r); | |
1817 | } | |
1818 | ||
1819 | void | |
1820 | free_memory_read_result_vector (void *x) | |
1821 | { | |
1822 | VEC(memory_read_result_s) *v = x; | |
1823 | memory_read_result_s *current; | |
1824 | int ix; | |
1825 | ||
1826 | for (ix = 0; VEC_iterate (memory_read_result_s, v, ix, current); ++ix) | |
1827 | { | |
1828 | xfree (current->data); | |
1829 | } | |
1830 | VEC_free (memory_read_result_s, v); | |
1831 | } | |
1832 | ||
1833 | VEC(memory_read_result_s) * | |
1834 | read_memory_robust (struct target_ops *ops, ULONGEST offset, LONGEST len) | |
1835 | { | |
1836 | VEC(memory_read_result_s) *result = 0; | |
1837 | ||
1838 | LONGEST xfered = 0; | |
d5086790 VP |
1839 | while (xfered < len) |
1840 | { | |
8dedea02 VP |
1841 | struct mem_region *region = lookup_mem_region (offset + xfered); |
1842 | LONGEST rlen; | |
5d502164 | 1843 | |
8dedea02 VP |
1844 | /* If there is no explicit region, a fake one should be created. */ |
1845 | gdb_assert (region); | |
1846 | ||
1847 | if (region->hi == 0) | |
1848 | rlen = len - xfered; | |
1849 | else | |
1850 | rlen = region->hi - offset; | |
1851 | ||
1852 | if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO) | |
d5086790 | 1853 | { |
c378eb4e | 1854 | /* Cannot read this region. Note that we can end up here only |
8dedea02 VP |
1855 | if the region is explicitly marked inaccessible, or |
1856 | 'inaccessible-by-default' is in effect. */ | |
1857 | xfered += rlen; | |
1858 | } | |
1859 | else | |
1860 | { | |
1861 | LONGEST to_read = min (len - xfered, rlen); | |
1862 | gdb_byte *buffer = (gdb_byte *)xmalloc (to_read); | |
1863 | ||
1864 | LONGEST xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
1865 | (gdb_byte *) buffer, | |
1866 | offset + xfered, to_read); | |
1867 | /* Call an observer, notifying them of the xfer progress? */ | |
d5086790 | 1868 | if (xfer <= 0) |
d5086790 | 1869 | { |
c378eb4e | 1870 | /* Got an error reading full chunk. See if maybe we can read |
8dedea02 VP |
1871 | some subrange. */ |
1872 | xfree (buffer); | |
3e43a32a MS |
1873 | read_whatever_is_readable (ops, offset + xfered, |
1874 | offset + xfered + to_read, &result); | |
8dedea02 | 1875 | xfered += to_read; |
d5086790 | 1876 | } |
8dedea02 VP |
1877 | else |
1878 | { | |
1879 | struct memory_read_result r; | |
1880 | r.data = buffer; | |
1881 | r.begin = offset + xfered; | |
1882 | r.end = r.begin + xfer; | |
1883 | VEC_safe_push (memory_read_result_s, result, &r); | |
1884 | xfered += xfer; | |
1885 | } | |
1886 | QUIT; | |
d5086790 | 1887 | } |
d5086790 | 1888 | } |
8dedea02 | 1889 | return result; |
d5086790 VP |
1890 | } |
1891 | ||
8dedea02 | 1892 | |
cf7a04e8 DJ |
1893 | /* An alternative to target_write with progress callbacks. */ |
1894 | ||
1e3ff5ad | 1895 | LONGEST |
cf7a04e8 DJ |
1896 | target_write_with_progress (struct target_ops *ops, |
1897 | enum target_object object, | |
1898 | const char *annex, const gdb_byte *buf, | |
1899 | ULONGEST offset, LONGEST len, | |
1900 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad AC |
1901 | { |
1902 | LONGEST xfered = 0; | |
a76d924d DJ |
1903 | |
1904 | /* Give the progress callback a chance to set up. */ | |
1905 | if (progress) | |
1906 | (*progress) (0, baton); | |
1907 | ||
1e3ff5ad AC |
1908 | while (xfered < len) |
1909 | { | |
9b409511 YQ |
1910 | ULONGEST xfered_len; |
1911 | enum target_xfer_status status; | |
1912 | ||
1913 | status = target_write_partial (ops, object, annex, | |
1914 | (gdb_byte *) buf + xfered, | |
1915 | offset + xfered, len - xfered, | |
1916 | &xfered_len); | |
cf7a04e8 | 1917 | |
5c328c05 YQ |
1918 | if (status != TARGET_XFER_OK) |
1919 | return status == TARGET_XFER_EOF ? xfered : -1; | |
cf7a04e8 DJ |
1920 | |
1921 | if (progress) | |
9b409511 | 1922 | (*progress) (xfered_len, baton); |
cf7a04e8 | 1923 | |
9b409511 | 1924 | xfered += xfered_len; |
1e3ff5ad AC |
1925 | QUIT; |
1926 | } | |
1927 | return len; | |
1928 | } | |
1929 | ||
7f79c47e DE |
1930 | /* For docs on target_write see target.h. */ |
1931 | ||
cf7a04e8 DJ |
1932 | LONGEST |
1933 | target_write (struct target_ops *ops, | |
1934 | enum target_object object, | |
1935 | const char *annex, const gdb_byte *buf, | |
1936 | ULONGEST offset, LONGEST len) | |
1937 | { | |
1938 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
1939 | NULL, NULL); | |
1940 | } | |
1941 | ||
159f81f3 DJ |
1942 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
1943 | the size of the transferred data. PADDING additional bytes are | |
1944 | available in *BUF_P. This is a helper function for | |
1945 | target_read_alloc; see the declaration of that function for more | |
1946 | information. */ | |
13547ab6 | 1947 | |
159f81f3 DJ |
1948 | static LONGEST |
1949 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, | |
1950 | const char *annex, gdb_byte **buf_p, int padding) | |
13547ab6 DJ |
1951 | { |
1952 | size_t buf_alloc, buf_pos; | |
1953 | gdb_byte *buf; | |
13547ab6 DJ |
1954 | |
1955 | /* This function does not have a length parameter; it reads the | |
1956 | entire OBJECT). Also, it doesn't support objects fetched partly | |
1957 | from one target and partly from another (in a different stratum, | |
1958 | e.g. a core file and an executable). Both reasons make it | |
1959 | unsuitable for reading memory. */ | |
1960 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
1961 | ||
1962 | /* Start by reading up to 4K at a time. The target will throttle | |
1963 | this number down if necessary. */ | |
1964 | buf_alloc = 4096; | |
1965 | buf = xmalloc (buf_alloc); | |
1966 | buf_pos = 0; | |
1967 | while (1) | |
1968 | { | |
9b409511 YQ |
1969 | ULONGEST xfered_len; |
1970 | enum target_xfer_status status; | |
1971 | ||
1972 | status = target_read_partial (ops, object, annex, &buf[buf_pos], | |
1973 | buf_pos, buf_alloc - buf_pos - padding, | |
1974 | &xfered_len); | |
1975 | ||
1976 | if (status == TARGET_XFER_EOF) | |
13547ab6 DJ |
1977 | { |
1978 | /* Read all there was. */ | |
1979 | if (buf_pos == 0) | |
1980 | xfree (buf); | |
1981 | else | |
1982 | *buf_p = buf; | |
1983 | return buf_pos; | |
1984 | } | |
9b409511 YQ |
1985 | else if (status != TARGET_XFER_OK) |
1986 | { | |
1987 | /* An error occurred. */ | |
1988 | xfree (buf); | |
1989 | return TARGET_XFER_E_IO; | |
1990 | } | |
13547ab6 | 1991 | |
9b409511 | 1992 | buf_pos += xfered_len; |
13547ab6 DJ |
1993 | |
1994 | /* If the buffer is filling up, expand it. */ | |
1995 | if (buf_alloc < buf_pos * 2) | |
1996 | { | |
1997 | buf_alloc *= 2; | |
1998 | buf = xrealloc (buf, buf_alloc); | |
1999 | } | |
2000 | ||
2001 | QUIT; | |
2002 | } | |
2003 | } | |
2004 | ||
159f81f3 DJ |
2005 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
2006 | the size of the transferred data. See the declaration in "target.h" | |
2007 | function for more information about the return value. */ | |
2008 | ||
2009 | LONGEST | |
2010 | target_read_alloc (struct target_ops *ops, enum target_object object, | |
2011 | const char *annex, gdb_byte **buf_p) | |
2012 | { | |
2013 | return target_read_alloc_1 (ops, object, annex, buf_p, 0); | |
2014 | } | |
2015 | ||
2016 | /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and | |
2017 | returned as a string, allocated using xmalloc. If an error occurs | |
2018 | or the transfer is unsupported, NULL is returned. Empty objects | |
2019 | are returned as allocated but empty strings. A warning is issued | |
2020 | if the result contains any embedded NUL bytes. */ | |
2021 | ||
2022 | char * | |
2023 | target_read_stralloc (struct target_ops *ops, enum target_object object, | |
2024 | const char *annex) | |
2025 | { | |
39086a0e PA |
2026 | gdb_byte *buffer; |
2027 | char *bufstr; | |
7313baad | 2028 | LONGEST i, transferred; |
159f81f3 | 2029 | |
39086a0e PA |
2030 | transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1); |
2031 | bufstr = (char *) buffer; | |
159f81f3 DJ |
2032 | |
2033 | if (transferred < 0) | |
2034 | return NULL; | |
2035 | ||
2036 | if (transferred == 0) | |
2037 | return xstrdup (""); | |
2038 | ||
39086a0e | 2039 | bufstr[transferred] = 0; |
7313baad UW |
2040 | |
2041 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
39086a0e PA |
2042 | for (i = strlen (bufstr); i < transferred; i++) |
2043 | if (bufstr[i] != 0) | |
7313baad UW |
2044 | { |
2045 | warning (_("target object %d, annex %s, " | |
2046 | "contained unexpected null characters"), | |
2047 | (int) object, annex ? annex : "(none)"); | |
2048 | break; | |
2049 | } | |
159f81f3 | 2050 | |
39086a0e | 2051 | return bufstr; |
159f81f3 DJ |
2052 | } |
2053 | ||
b6591e8b AC |
2054 | /* Memory transfer methods. */ |
2055 | ||
2056 | void | |
1b0ba102 | 2057 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
2058 | LONGEST len) |
2059 | { | |
07b82ea5 PA |
2060 | /* This method is used to read from an alternate, non-current |
2061 | target. This read must bypass the overlay support (as symbols | |
2062 | don't match this target), and GDB's internal cache (wrong cache | |
2063 | for this target). */ | |
2064 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) | |
b6591e8b | 2065 | != len) |
578d3588 | 2066 | memory_error (TARGET_XFER_E_IO, addr); |
b6591e8b AC |
2067 | } |
2068 | ||
2069 | ULONGEST | |
5d502164 MS |
2070 | get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr, |
2071 | int len, enum bfd_endian byte_order) | |
b6591e8b | 2072 | { |
f6519ebc | 2073 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
2074 | |
2075 | gdb_assert (len <= sizeof (buf)); | |
2076 | get_target_memory (ops, addr, buf, len); | |
e17a4113 | 2077 | return extract_unsigned_integer (buf, len, byte_order); |
b6591e8b AC |
2078 | } |
2079 | ||
3db08215 MM |
2080 | /* See target.h. */ |
2081 | ||
d914c394 SS |
2082 | int |
2083 | target_insert_breakpoint (struct gdbarch *gdbarch, | |
2084 | struct bp_target_info *bp_tgt) | |
2085 | { | |
2086 | if (!may_insert_breakpoints) | |
2087 | { | |
2088 | warning (_("May not insert breakpoints")); | |
2089 | return 1; | |
2090 | } | |
2091 | ||
6b84065d TT |
2092 | return current_target.to_insert_breakpoint (¤t_target, |
2093 | gdbarch, bp_tgt); | |
d914c394 SS |
2094 | } |
2095 | ||
3db08215 MM |
2096 | /* See target.h. */ |
2097 | ||
d914c394 | 2098 | int |
6b84065d TT |
2099 | target_remove_breakpoint (struct gdbarch *gdbarch, |
2100 | struct bp_target_info *bp_tgt) | |
d914c394 SS |
2101 | { |
2102 | /* This is kind of a weird case to handle, but the permission might | |
2103 | have been changed after breakpoints were inserted - in which case | |
2104 | we should just take the user literally and assume that any | |
2105 | breakpoints should be left in place. */ | |
2106 | if (!may_insert_breakpoints) | |
2107 | { | |
2108 | warning (_("May not remove breakpoints")); | |
2109 | return 1; | |
2110 | } | |
2111 | ||
6b84065d TT |
2112 | return current_target.to_remove_breakpoint (¤t_target, |
2113 | gdbarch, bp_tgt); | |
d914c394 SS |
2114 | } |
2115 | ||
c906108c | 2116 | static void |
fba45db2 | 2117 | target_info (char *args, int from_tty) |
c906108c SS |
2118 | { |
2119 | struct target_ops *t; | |
c906108c | 2120 | int has_all_mem = 0; |
c5aa993b | 2121 | |
c906108c | 2122 | if (symfile_objfile != NULL) |
4262abfb JK |
2123 | printf_unfiltered (_("Symbols from \"%s\".\n"), |
2124 | objfile_name (symfile_objfile)); | |
c906108c | 2125 | |
258b763a | 2126 | for (t = target_stack; t != NULL; t = t->beneath) |
c906108c | 2127 | { |
c35b1492 | 2128 | if (!(*t->to_has_memory) (t)) |
c906108c SS |
2129 | continue; |
2130 | ||
c5aa993b | 2131 | if ((int) (t->to_stratum) <= (int) dummy_stratum) |
c906108c SS |
2132 | continue; |
2133 | if (has_all_mem) | |
3e43a32a MS |
2134 | printf_unfiltered (_("\tWhile running this, " |
2135 | "GDB does not access memory from...\n")); | |
c5aa993b JM |
2136 | printf_unfiltered ("%s:\n", t->to_longname); |
2137 | (t->to_files_info) (t); | |
c35b1492 | 2138 | has_all_mem = (*t->to_has_all_memory) (t); |
c906108c SS |
2139 | } |
2140 | } | |
2141 | ||
fd79ecee DJ |
2142 | /* This function is called before any new inferior is created, e.g. |
2143 | by running a program, attaching, or connecting to a target. | |
2144 | It cleans up any state from previous invocations which might | |
2145 | change between runs. This is a subset of what target_preopen | |
2146 | resets (things which might change between targets). */ | |
2147 | ||
2148 | void | |
2149 | target_pre_inferior (int from_tty) | |
2150 | { | |
c378eb4e | 2151 | /* Clear out solib state. Otherwise the solib state of the previous |
b9db4ced | 2152 | inferior might have survived and is entirely wrong for the new |
c378eb4e | 2153 | target. This has been observed on GNU/Linux using glibc 2.3. How |
b9db4ced UW |
2154 | to reproduce: |
2155 | ||
2156 | bash$ ./foo& | |
2157 | [1] 4711 | |
2158 | bash$ ./foo& | |
2159 | [1] 4712 | |
2160 | bash$ gdb ./foo | |
2161 | [...] | |
2162 | (gdb) attach 4711 | |
2163 | (gdb) detach | |
2164 | (gdb) attach 4712 | |
2165 | Cannot access memory at address 0xdeadbeef | |
2166 | */ | |
b9db4ced | 2167 | |
50c71eaf PA |
2168 | /* In some OSs, the shared library list is the same/global/shared |
2169 | across inferiors. If code is shared between processes, so are | |
2170 | memory regions and features. */ | |
f5656ead | 2171 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
50c71eaf PA |
2172 | { |
2173 | no_shared_libraries (NULL, from_tty); | |
2174 | ||
2175 | invalidate_target_mem_regions (); | |
424163ea | 2176 | |
50c71eaf PA |
2177 | target_clear_description (); |
2178 | } | |
8ffcbaaf YQ |
2179 | |
2180 | agent_capability_invalidate (); | |
fd79ecee DJ |
2181 | } |
2182 | ||
b8fa0bfa PA |
2183 | /* Callback for iterate_over_inferiors. Gets rid of the given |
2184 | inferior. */ | |
2185 | ||
2186 | static int | |
2187 | dispose_inferior (struct inferior *inf, void *args) | |
2188 | { | |
2189 | struct thread_info *thread; | |
2190 | ||
2191 | thread = any_thread_of_process (inf->pid); | |
2192 | if (thread) | |
2193 | { | |
2194 | switch_to_thread (thread->ptid); | |
2195 | ||
2196 | /* Core inferiors actually should be detached, not killed. */ | |
2197 | if (target_has_execution) | |
2198 | target_kill (); | |
2199 | else | |
2200 | target_detach (NULL, 0); | |
2201 | } | |
2202 | ||
2203 | return 0; | |
2204 | } | |
2205 | ||
c906108c SS |
2206 | /* This is to be called by the open routine before it does |
2207 | anything. */ | |
2208 | ||
2209 | void | |
fba45db2 | 2210 | target_preopen (int from_tty) |
c906108c | 2211 | { |
c5aa993b | 2212 | dont_repeat (); |
c906108c | 2213 | |
b8fa0bfa | 2214 | if (have_inferiors ()) |
c5aa993b | 2215 | { |
adf40b2e | 2216 | if (!from_tty |
b8fa0bfa PA |
2217 | || !have_live_inferiors () |
2218 | || query (_("A program is being debugged already. Kill it? "))) | |
2219 | iterate_over_inferiors (dispose_inferior, NULL); | |
c906108c | 2220 | else |
8a3fe4f8 | 2221 | error (_("Program not killed.")); |
c906108c SS |
2222 | } |
2223 | ||
2224 | /* Calling target_kill may remove the target from the stack. But if | |
2225 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
2226 | /* Leave the exec target, though. The user may be switching from a |
2227 | live process to a core of the same program. */ | |
460014f5 | 2228 | pop_all_targets_above (file_stratum); |
fd79ecee DJ |
2229 | |
2230 | target_pre_inferior (from_tty); | |
c906108c SS |
2231 | } |
2232 | ||
2233 | /* Detach a target after doing deferred register stores. */ | |
2234 | ||
2235 | void | |
52554a0e | 2236 | target_detach (const char *args, int from_tty) |
c906108c | 2237 | { |
136d6dae VP |
2238 | struct target_ops* t; |
2239 | ||
f5656ead | 2240 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
2241 | /* Don't remove global breakpoints here. They're removed on |
2242 | disconnection from the target. */ | |
2243 | ; | |
2244 | else | |
2245 | /* If we're in breakpoints-always-inserted mode, have to remove | |
2246 | them before detaching. */ | |
dfd4cc63 | 2247 | remove_breakpoints_pid (ptid_get_pid (inferior_ptid)); |
74960c60 | 2248 | |
24291992 PA |
2249 | prepare_for_detach (); |
2250 | ||
09da0d0a TT |
2251 | current_target.to_detach (¤t_target, args, from_tty); |
2252 | if (targetdebug) | |
2253 | fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n", | |
2254 | args, from_tty); | |
c906108c SS |
2255 | } |
2256 | ||
6ad8ae5c DJ |
2257 | void |
2258 | target_disconnect (char *args, int from_tty) | |
2259 | { | |
50c71eaf PA |
2260 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
2261 | are global across processes, we have to remove them before | |
2262 | disconnecting. */ | |
74960c60 VP |
2263 | remove_breakpoints (); |
2264 | ||
86a0854a TT |
2265 | if (targetdebug) |
2266 | fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n", | |
2267 | args, from_tty); | |
2268 | current_target.to_disconnect (¤t_target, args, from_tty); | |
6ad8ae5c DJ |
2269 | } |
2270 | ||
117de6a9 | 2271 | ptid_t |
47608cb1 | 2272 | target_wait (ptid_t ptid, struct target_waitstatus *status, int options) |
117de6a9 PA |
2273 | { |
2274 | struct target_ops *t; | |
6b84065d TT |
2275 | ptid_t retval = (current_target.to_wait) (¤t_target, ptid, |
2276 | status, options); | |
117de6a9 | 2277 | |
6b84065d | 2278 | if (targetdebug) |
117de6a9 | 2279 | { |
6b84065d TT |
2280 | char *status_string; |
2281 | char *options_string; | |
117de6a9 | 2282 | |
6b84065d TT |
2283 | status_string = target_waitstatus_to_string (status); |
2284 | options_string = target_options_to_string (options); | |
2285 | fprintf_unfiltered (gdb_stdlog, | |
2286 | "target_wait (%d, status, options={%s})" | |
2287 | " = %d, %s\n", | |
2288 | ptid_get_pid (ptid), options_string, | |
2289 | ptid_get_pid (retval), status_string); | |
2290 | xfree (status_string); | |
2291 | xfree (options_string); | |
117de6a9 PA |
2292 | } |
2293 | ||
6b84065d | 2294 | return retval; |
117de6a9 PA |
2295 | } |
2296 | ||
2297 | char * | |
2298 | target_pid_to_str (ptid_t ptid) | |
2299 | { | |
770234d3 | 2300 | return (*current_target.to_pid_to_str) (¤t_target, ptid); |
117de6a9 PA |
2301 | } |
2302 | ||
4694da01 TT |
2303 | char * |
2304 | target_thread_name (struct thread_info *info) | |
2305 | { | |
825828fc | 2306 | return current_target.to_thread_name (¤t_target, info); |
4694da01 TT |
2307 | } |
2308 | ||
e1ac3328 | 2309 | void |
2ea28649 | 2310 | target_resume (ptid_t ptid, int step, enum gdb_signal signal) |
e1ac3328 | 2311 | { |
28439f5e PA |
2312 | struct target_ops *t; |
2313 | ||
4e5d721f | 2314 | target_dcache_invalidate (); |
28439f5e | 2315 | |
6b84065d TT |
2316 | current_target.to_resume (¤t_target, ptid, step, signal); |
2317 | if (targetdebug) | |
2318 | fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n", | |
2319 | ptid_get_pid (ptid), | |
2320 | step ? "step" : "continue", | |
2321 | gdb_signal_to_name (signal)); | |
28439f5e | 2322 | |
6b84065d TT |
2323 | registers_changed_ptid (ptid); |
2324 | set_executing (ptid, 1); | |
2325 | set_running (ptid, 1); | |
2326 | clear_inline_frame_state (ptid); | |
e1ac3328 | 2327 | } |
2455069d UW |
2328 | |
2329 | void | |
2330 | target_pass_signals (int numsigs, unsigned char *pass_signals) | |
2331 | { | |
035cad7f | 2332 | if (targetdebug) |
2455069d | 2333 | { |
035cad7f | 2334 | int i; |
2455069d | 2335 | |
035cad7f TT |
2336 | fprintf_unfiltered (gdb_stdlog, "target_pass_signals (%d, {", |
2337 | numsigs); | |
2455069d | 2338 | |
035cad7f TT |
2339 | for (i = 0; i < numsigs; i++) |
2340 | if (pass_signals[i]) | |
2341 | fprintf_unfiltered (gdb_stdlog, " %s", | |
2342 | gdb_signal_to_name (i)); | |
2455069d | 2343 | |
035cad7f | 2344 | fprintf_unfiltered (gdb_stdlog, " })\n"); |
2455069d | 2345 | } |
035cad7f TT |
2346 | |
2347 | (*current_target.to_pass_signals) (¤t_target, numsigs, pass_signals); | |
2455069d UW |
2348 | } |
2349 | ||
9b224c5e PA |
2350 | void |
2351 | target_program_signals (int numsigs, unsigned char *program_signals) | |
2352 | { | |
7d4f8efa | 2353 | if (targetdebug) |
9b224c5e | 2354 | { |
7d4f8efa | 2355 | int i; |
9b224c5e | 2356 | |
7d4f8efa TT |
2357 | fprintf_unfiltered (gdb_stdlog, "target_program_signals (%d, {", |
2358 | numsigs); | |
9b224c5e | 2359 | |
7d4f8efa TT |
2360 | for (i = 0; i < numsigs; i++) |
2361 | if (program_signals[i]) | |
2362 | fprintf_unfiltered (gdb_stdlog, " %s", | |
2363 | gdb_signal_to_name (i)); | |
9b224c5e | 2364 | |
7d4f8efa | 2365 | fprintf_unfiltered (gdb_stdlog, " })\n"); |
9b224c5e | 2366 | } |
7d4f8efa TT |
2367 | |
2368 | (*current_target.to_program_signals) (¤t_target, | |
2369 | numsigs, program_signals); | |
9b224c5e PA |
2370 | } |
2371 | ||
098dba18 TT |
2372 | static int |
2373 | default_follow_fork (struct target_ops *self, int follow_child, | |
2374 | int detach_fork) | |
2375 | { | |
2376 | /* Some target returned a fork event, but did not know how to follow it. */ | |
2377 | internal_error (__FILE__, __LINE__, | |
2378 | _("could not find a target to follow fork")); | |
2379 | } | |
2380 | ||
ee057212 DJ |
2381 | /* Look through the list of possible targets for a target that can |
2382 | follow forks. */ | |
2383 | ||
2384 | int | |
07107ca6 | 2385 | target_follow_fork (int follow_child, int detach_fork) |
ee057212 | 2386 | { |
098dba18 TT |
2387 | int retval = current_target.to_follow_fork (¤t_target, |
2388 | follow_child, detach_fork); | |
ee057212 | 2389 | |
098dba18 TT |
2390 | if (targetdebug) |
2391 | fprintf_unfiltered (gdb_stdlog, | |
2392 | "target_follow_fork (%d, %d) = %d\n", | |
2393 | follow_child, detach_fork, retval); | |
2394 | return retval; | |
ee057212 DJ |
2395 | } |
2396 | ||
8d657035 TT |
2397 | static void |
2398 | default_mourn_inferior (struct target_ops *self) | |
2399 | { | |
2400 | internal_error (__FILE__, __LINE__, | |
2401 | _("could not find a target to follow mourn inferior")); | |
2402 | } | |
2403 | ||
136d6dae VP |
2404 | void |
2405 | target_mourn_inferior (void) | |
2406 | { | |
8d657035 TT |
2407 | current_target.to_mourn_inferior (¤t_target); |
2408 | if (targetdebug) | |
2409 | fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n"); | |
136d6dae | 2410 | |
8d657035 TT |
2411 | /* We no longer need to keep handles on any of the object files. |
2412 | Make sure to release them to avoid unnecessarily locking any | |
2413 | of them while we're not actually debugging. */ | |
2414 | bfd_cache_close_all (); | |
136d6dae VP |
2415 | } |
2416 | ||
424163ea DJ |
2417 | /* Look for a target which can describe architectural features, starting |
2418 | from TARGET. If we find one, return its description. */ | |
2419 | ||
2420 | const struct target_desc * | |
2421 | target_read_description (struct target_ops *target) | |
2422 | { | |
2117c711 | 2423 | return target->to_read_description (target); |
424163ea DJ |
2424 | } |
2425 | ||
58a5184e | 2426 | /* This implements a basic search of memory, reading target memory and |
08388c79 DE |
2427 | performing the search here (as opposed to performing the search in on the |
2428 | target side with, for example, gdbserver). */ | |
2429 | ||
2430 | int | |
2431 | simple_search_memory (struct target_ops *ops, | |
2432 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2433 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2434 | CORE_ADDR *found_addrp) | |
2435 | { | |
2436 | /* NOTE: also defined in find.c testcase. */ | |
2437 | #define SEARCH_CHUNK_SIZE 16000 | |
2438 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
2439 | /* Buffer to hold memory contents for searching. */ | |
2440 | gdb_byte *search_buf; | |
2441 | unsigned search_buf_size; | |
2442 | struct cleanup *old_cleanups; | |
2443 | ||
2444 | search_buf_size = chunk_size + pattern_len - 1; | |
2445 | ||
2446 | /* No point in trying to allocate a buffer larger than the search space. */ | |
2447 | if (search_space_len < search_buf_size) | |
2448 | search_buf_size = search_space_len; | |
2449 | ||
2450 | search_buf = malloc (search_buf_size); | |
2451 | if (search_buf == NULL) | |
5e1471f5 | 2452 | error (_("Unable to allocate memory to perform the search.")); |
08388c79 DE |
2453 | old_cleanups = make_cleanup (free_current_contents, &search_buf); |
2454 | ||
2455 | /* Prime the search buffer. */ | |
2456 | ||
2457 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2458 | search_buf, start_addr, search_buf_size) != search_buf_size) | |
2459 | { | |
b3dc46ff AB |
2460 | warning (_("Unable to access %s bytes of target " |
2461 | "memory at %s, halting search."), | |
2462 | pulongest (search_buf_size), hex_string (start_addr)); | |
08388c79 DE |
2463 | do_cleanups (old_cleanups); |
2464 | return -1; | |
2465 | } | |
2466 | ||
2467 | /* Perform the search. | |
2468 | ||
2469 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
2470 | When we've scanned N bytes we copy the trailing bytes to the start and | |
2471 | read in another N bytes. */ | |
2472 | ||
2473 | while (search_space_len >= pattern_len) | |
2474 | { | |
2475 | gdb_byte *found_ptr; | |
2476 | unsigned nr_search_bytes = min (search_space_len, search_buf_size); | |
2477 | ||
2478 | found_ptr = memmem (search_buf, nr_search_bytes, | |
2479 | pattern, pattern_len); | |
2480 | ||
2481 | if (found_ptr != NULL) | |
2482 | { | |
2483 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
5d502164 | 2484 | |
08388c79 DE |
2485 | *found_addrp = found_addr; |
2486 | do_cleanups (old_cleanups); | |
2487 | return 1; | |
2488 | } | |
2489 | ||
2490 | /* Not found in this chunk, skip to next chunk. */ | |
2491 | ||
2492 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
2493 | if (search_space_len >= chunk_size) | |
2494 | search_space_len -= chunk_size; | |
2495 | else | |
2496 | search_space_len = 0; | |
2497 | ||
2498 | if (search_space_len >= pattern_len) | |
2499 | { | |
2500 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 2501 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
2502 | int nr_to_read; |
2503 | ||
2504 | /* Copy the trailing part of the previous iteration to the front | |
2505 | of the buffer for the next iteration. */ | |
2506 | gdb_assert (keep_len == pattern_len - 1); | |
2507 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
2508 | ||
2509 | nr_to_read = min (search_space_len - keep_len, chunk_size); | |
2510 | ||
2511 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2512 | search_buf + keep_len, read_addr, | |
2513 | nr_to_read) != nr_to_read) | |
2514 | { | |
b3dc46ff | 2515 | warning (_("Unable to access %s bytes of target " |
9b20d036 | 2516 | "memory at %s, halting search."), |
b3dc46ff | 2517 | plongest (nr_to_read), |
08388c79 DE |
2518 | hex_string (read_addr)); |
2519 | do_cleanups (old_cleanups); | |
2520 | return -1; | |
2521 | } | |
2522 | ||
2523 | start_addr += chunk_size; | |
2524 | } | |
2525 | } | |
2526 | ||
2527 | /* Not found. */ | |
2528 | ||
2529 | do_cleanups (old_cleanups); | |
2530 | return 0; | |
2531 | } | |
2532 | ||
58a5184e TT |
2533 | /* Default implementation of memory-searching. */ |
2534 | ||
2535 | static int | |
2536 | default_search_memory (struct target_ops *self, | |
2537 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2538 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2539 | CORE_ADDR *found_addrp) | |
2540 | { | |
2541 | /* Start over from the top of the target stack. */ | |
2542 | return simple_search_memory (current_target.beneath, | |
2543 | start_addr, search_space_len, | |
2544 | pattern, pattern_len, found_addrp); | |
2545 | } | |
2546 | ||
08388c79 DE |
2547 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the |
2548 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2549 | ||
2550 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2551 | requiring halting of the search (e.g. memory read error). | |
2552 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2553 | ||
2554 | int | |
2555 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2556 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2557 | CORE_ADDR *found_addrp) | |
2558 | { | |
08388c79 DE |
2559 | int found; |
2560 | ||
08388c79 DE |
2561 | if (targetdebug) |
2562 | fprintf_unfiltered (gdb_stdlog, "target_search_memory (%s, ...)\n", | |
2563 | hex_string (start_addr)); | |
2564 | ||
58a5184e TT |
2565 | found = current_target.to_search_memory (¤t_target, start_addr, |
2566 | search_space_len, | |
2567 | pattern, pattern_len, found_addrp); | |
08388c79 DE |
2568 | |
2569 | if (targetdebug) | |
2570 | fprintf_unfiltered (gdb_stdlog, " = %d\n", found); | |
2571 | ||
2572 | return found; | |
2573 | } | |
2574 | ||
8edfe269 DJ |
2575 | /* Look through the currently pushed targets. If none of them will |
2576 | be able to restart the currently running process, issue an error | |
2577 | message. */ | |
2578 | ||
2579 | void | |
2580 | target_require_runnable (void) | |
2581 | { | |
2582 | struct target_ops *t; | |
2583 | ||
2584 | for (t = target_stack; t != NULL; t = t->beneath) | |
2585 | { | |
2586 | /* If this target knows how to create a new program, then | |
2587 | assume we will still be able to after killing the current | |
2588 | one. Either killing and mourning will not pop T, or else | |
2589 | find_default_run_target will find it again. */ | |
2590 | if (t->to_create_inferior != NULL) | |
2591 | return; | |
2592 | ||
2593 | /* Do not worry about thread_stratum targets that can not | |
2594 | create inferiors. Assume they will be pushed again if | |
2595 | necessary, and continue to the process_stratum. */ | |
85e747d2 UW |
2596 | if (t->to_stratum == thread_stratum |
2597 | || t->to_stratum == arch_stratum) | |
8edfe269 DJ |
2598 | continue; |
2599 | ||
3e43a32a MS |
2600 | error (_("The \"%s\" target does not support \"run\". " |
2601 | "Try \"help target\" or \"continue\"."), | |
8edfe269 DJ |
2602 | t->to_shortname); |
2603 | } | |
2604 | ||
2605 | /* This function is only called if the target is running. In that | |
2606 | case there should have been a process_stratum target and it | |
c378eb4e | 2607 | should either know how to create inferiors, or not... */ |
9b20d036 | 2608 | internal_error (__FILE__, __LINE__, _("No targets found")); |
8edfe269 DJ |
2609 | } |
2610 | ||
c906108c SS |
2611 | /* Look through the list of possible targets for a target that can |
2612 | execute a run or attach command without any other data. This is | |
2613 | used to locate the default process stratum. | |
2614 | ||
5f667f2d PA |
2615 | If DO_MESG is not NULL, the result is always valid (error() is |
2616 | called for errors); else, return NULL on error. */ | |
c906108c SS |
2617 | |
2618 | static struct target_ops * | |
fba45db2 | 2619 | find_default_run_target (char *do_mesg) |
c906108c SS |
2620 | { |
2621 | struct target_ops **t; | |
2622 | struct target_ops *runable = NULL; | |
2623 | int count; | |
2624 | ||
2625 | count = 0; | |
2626 | ||
2627 | for (t = target_structs; t < target_structs + target_struct_size; | |
2628 | ++t) | |
2629 | { | |
e88ef65c | 2630 | if ((*t)->to_can_run != delegate_can_run && target_can_run (*t)) |
c906108c SS |
2631 | { |
2632 | runable = *t; | |
2633 | ++count; | |
2634 | } | |
2635 | } | |
2636 | ||
2637 | if (count != 1) | |
5f667f2d PA |
2638 | { |
2639 | if (do_mesg) | |
2640 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
2641 | else | |
2642 | return NULL; | |
2643 | } | |
c906108c SS |
2644 | |
2645 | return runable; | |
2646 | } | |
2647 | ||
2648 | void | |
136d6dae | 2649 | find_default_attach (struct target_ops *ops, char *args, int from_tty) |
c906108c SS |
2650 | { |
2651 | struct target_ops *t; | |
2652 | ||
c5aa993b | 2653 | t = find_default_run_target ("attach"); |
136d6dae | 2654 | (t->to_attach) (t, args, from_tty); |
c906108c SS |
2655 | return; |
2656 | } | |
2657 | ||
c906108c | 2658 | void |
136d6dae VP |
2659 | find_default_create_inferior (struct target_ops *ops, |
2660 | char *exec_file, char *allargs, char **env, | |
c27cda74 | 2661 | int from_tty) |
c906108c SS |
2662 | { |
2663 | struct target_ops *t; | |
2664 | ||
c5aa993b | 2665 | t = find_default_run_target ("run"); |
136d6dae | 2666 | (t->to_create_inferior) (t, exec_file, allargs, env, from_tty); |
c906108c SS |
2667 | return; |
2668 | } | |
2669 | ||
2c0b251b | 2670 | static int |
6a109b6b | 2671 | find_default_can_async_p (struct target_ops *ignore) |
b84876c2 PA |
2672 | { |
2673 | struct target_ops *t; | |
2674 | ||
5f667f2d PA |
2675 | /* This may be called before the target is pushed on the stack; |
2676 | look for the default process stratum. If there's none, gdb isn't | |
2677 | configured with a native debugger, and target remote isn't | |
2678 | connected yet. */ | |
2679 | t = find_default_run_target (NULL); | |
6b84065d | 2680 | if (t && t->to_can_async_p != delegate_can_async_p) |
6a109b6b | 2681 | return (t->to_can_async_p) (t); |
b84876c2 PA |
2682 | return 0; |
2683 | } | |
2684 | ||
2c0b251b | 2685 | static int |
6a109b6b | 2686 | find_default_is_async_p (struct target_ops *ignore) |
b84876c2 PA |
2687 | { |
2688 | struct target_ops *t; | |
2689 | ||
5f667f2d PA |
2690 | /* This may be called before the target is pushed on the stack; |
2691 | look for the default process stratum. If there's none, gdb isn't | |
2692 | configured with a native debugger, and target remote isn't | |
2693 | connected yet. */ | |
2694 | t = find_default_run_target (NULL); | |
6b84065d | 2695 | if (t && t->to_is_async_p != delegate_is_async_p) |
6a109b6b | 2696 | return (t->to_is_async_p) (t); |
b84876c2 PA |
2697 | return 0; |
2698 | } | |
2699 | ||
2c0b251b | 2700 | static int |
2a9a2795 | 2701 | find_default_supports_non_stop (struct target_ops *self) |
9908b566 VP |
2702 | { |
2703 | struct target_ops *t; | |
2704 | ||
2705 | t = find_default_run_target (NULL); | |
2706 | if (t && t->to_supports_non_stop) | |
2a9a2795 | 2707 | return (t->to_supports_non_stop) (t); |
9908b566 VP |
2708 | return 0; |
2709 | } | |
2710 | ||
2711 | int | |
2c0b251b | 2712 | target_supports_non_stop (void) |
9908b566 VP |
2713 | { |
2714 | struct target_ops *t; | |
5d502164 | 2715 | |
9908b566 VP |
2716 | for (t = ¤t_target; t != NULL; t = t->beneath) |
2717 | if (t->to_supports_non_stop) | |
2a9a2795 | 2718 | return t->to_supports_non_stop (t); |
9908b566 VP |
2719 | |
2720 | return 0; | |
2721 | } | |
2722 | ||
145b16a9 UW |
2723 | /* Implement the "info proc" command. */ |
2724 | ||
451b7c33 | 2725 | int |
145b16a9 UW |
2726 | target_info_proc (char *args, enum info_proc_what what) |
2727 | { | |
2728 | struct target_ops *t; | |
2729 | ||
2730 | /* If we're already connected to something that can get us OS | |
2731 | related data, use it. Otherwise, try using the native | |
2732 | target. */ | |
2733 | if (current_target.to_stratum >= process_stratum) | |
2734 | t = current_target.beneath; | |
2735 | else | |
2736 | t = find_default_run_target (NULL); | |
2737 | ||
2738 | for (; t != NULL; t = t->beneath) | |
2739 | { | |
2740 | if (t->to_info_proc != NULL) | |
2741 | { | |
2742 | t->to_info_proc (t, args, what); | |
2743 | ||
2744 | if (targetdebug) | |
2745 | fprintf_unfiltered (gdb_stdlog, | |
2746 | "target_info_proc (\"%s\", %d)\n", args, what); | |
2747 | ||
451b7c33 | 2748 | return 1; |
145b16a9 UW |
2749 | } |
2750 | } | |
2751 | ||
451b7c33 | 2752 | return 0; |
145b16a9 UW |
2753 | } |
2754 | ||
03583c20 | 2755 | static int |
2bfc0540 | 2756 | find_default_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
2757 | { |
2758 | struct target_ops *t; | |
2759 | ||
2760 | t = find_default_run_target (NULL); | |
2761 | if (t && t->to_supports_disable_randomization) | |
2bfc0540 | 2762 | return (t->to_supports_disable_randomization) (t); |
03583c20 UW |
2763 | return 0; |
2764 | } | |
2765 | ||
2766 | int | |
2767 | target_supports_disable_randomization (void) | |
2768 | { | |
2769 | struct target_ops *t; | |
2770 | ||
2771 | for (t = ¤t_target; t != NULL; t = t->beneath) | |
2772 | if (t->to_supports_disable_randomization) | |
2bfc0540 | 2773 | return t->to_supports_disable_randomization (t); |
03583c20 UW |
2774 | |
2775 | return 0; | |
2776 | } | |
9908b566 | 2777 | |
07e059b5 VP |
2778 | char * |
2779 | target_get_osdata (const char *type) | |
2780 | { | |
07e059b5 VP |
2781 | struct target_ops *t; |
2782 | ||
739ef7fb PA |
2783 | /* If we're already connected to something that can get us OS |
2784 | related data, use it. Otherwise, try using the native | |
2785 | target. */ | |
2786 | if (current_target.to_stratum >= process_stratum) | |
6d097e65 | 2787 | t = current_target.beneath; |
739ef7fb PA |
2788 | else |
2789 | t = find_default_run_target ("get OS data"); | |
07e059b5 VP |
2790 | |
2791 | if (!t) | |
2792 | return NULL; | |
2793 | ||
6d097e65 | 2794 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
2795 | } |
2796 | ||
6c95b8df PA |
2797 | /* Determine the current address space of thread PTID. */ |
2798 | ||
2799 | struct address_space * | |
2800 | target_thread_address_space (ptid_t ptid) | |
2801 | { | |
c0694254 | 2802 | struct address_space *aspace; |
6c95b8df | 2803 | struct inferior *inf; |
c0694254 PA |
2804 | struct target_ops *t; |
2805 | ||
2806 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2807 | { | |
2808 | if (t->to_thread_address_space != NULL) | |
2809 | { | |
2810 | aspace = t->to_thread_address_space (t, ptid); | |
2811 | gdb_assert (aspace); | |
6c95b8df | 2812 | |
c0694254 PA |
2813 | if (targetdebug) |
2814 | fprintf_unfiltered (gdb_stdlog, | |
2815 | "target_thread_address_space (%s) = %d\n", | |
2816 | target_pid_to_str (ptid), | |
2817 | address_space_num (aspace)); | |
2818 | return aspace; | |
2819 | } | |
2820 | } | |
6c95b8df PA |
2821 | |
2822 | /* Fall-back to the "main" address space of the inferior. */ | |
2823 | inf = find_inferior_pid (ptid_get_pid (ptid)); | |
2824 | ||
2825 | if (inf == NULL || inf->aspace == NULL) | |
3e43a32a | 2826 | internal_error (__FILE__, __LINE__, |
9b20d036 MS |
2827 | _("Can't determine the current " |
2828 | "address space of thread %s\n"), | |
6c95b8df PA |
2829 | target_pid_to_str (ptid)); |
2830 | ||
2831 | return inf->aspace; | |
2832 | } | |
2833 | ||
7313baad UW |
2834 | |
2835 | /* Target file operations. */ | |
2836 | ||
2837 | static struct target_ops * | |
2838 | default_fileio_target (void) | |
2839 | { | |
2840 | /* If we're already connected to something that can perform | |
2841 | file I/O, use it. Otherwise, try using the native target. */ | |
2842 | if (current_target.to_stratum >= process_stratum) | |
2843 | return current_target.beneath; | |
2844 | else | |
2845 | return find_default_run_target ("file I/O"); | |
2846 | } | |
2847 | ||
2848 | /* Open FILENAME on the target, using FLAGS and MODE. Return a | |
2849 | target file descriptor, or -1 if an error occurs (and set | |
2850 | *TARGET_ERRNO). */ | |
2851 | int | |
2852 | target_fileio_open (const char *filename, int flags, int mode, | |
2853 | int *target_errno) | |
2854 | { | |
2855 | struct target_ops *t; | |
2856 | ||
2857 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2858 | { | |
2859 | if (t->to_fileio_open != NULL) | |
2860 | { | |
cd897586 | 2861 | int fd = t->to_fileio_open (t, filename, flags, mode, target_errno); |
7313baad UW |
2862 | |
2863 | if (targetdebug) | |
2864 | fprintf_unfiltered (gdb_stdlog, | |
2865 | "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n", | |
2866 | filename, flags, mode, | |
2867 | fd, fd != -1 ? 0 : *target_errno); | |
2868 | return fd; | |
2869 | } | |
2870 | } | |
2871 | ||
2872 | *target_errno = FILEIO_ENOSYS; | |
2873 | return -1; | |
2874 | } | |
2875 | ||
2876 | /* Write up to LEN bytes from WRITE_BUF to FD on the target. | |
2877 | Return the number of bytes written, or -1 if an error occurs | |
2878 | (and set *TARGET_ERRNO). */ | |
2879 | int | |
2880 | target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
2881 | ULONGEST offset, int *target_errno) | |
2882 | { | |
2883 | struct target_ops *t; | |
2884 | ||
2885 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2886 | { | |
2887 | if (t->to_fileio_pwrite != NULL) | |
2888 | { | |
0d866f62 | 2889 | int ret = t->to_fileio_pwrite (t, fd, write_buf, len, offset, |
7313baad UW |
2890 | target_errno); |
2891 | ||
2892 | if (targetdebug) | |
2893 | fprintf_unfiltered (gdb_stdlog, | |
a71b5a38 | 2894 | "target_fileio_pwrite (%d,...,%d,%s) " |
7313baad | 2895 | "= %d (%d)\n", |
a71b5a38 | 2896 | fd, len, pulongest (offset), |
7313baad UW |
2897 | ret, ret != -1 ? 0 : *target_errno); |
2898 | return ret; | |
2899 | } | |
2900 | } | |
2901 | ||
2902 | *target_errno = FILEIO_ENOSYS; | |
2903 | return -1; | |
2904 | } | |
2905 | ||
2906 | /* Read up to LEN bytes FD on the target into READ_BUF. | |
2907 | Return the number of bytes read, or -1 if an error occurs | |
2908 | (and set *TARGET_ERRNO). */ | |
2909 | int | |
2910 | target_fileio_pread (int fd, gdb_byte *read_buf, int len, | |
2911 | ULONGEST offset, int *target_errno) | |
2912 | { | |
2913 | struct target_ops *t; | |
2914 | ||
2915 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2916 | { | |
2917 | if (t->to_fileio_pread != NULL) | |
2918 | { | |
a3be983c | 2919 | int ret = t->to_fileio_pread (t, fd, read_buf, len, offset, |
7313baad UW |
2920 | target_errno); |
2921 | ||
2922 | if (targetdebug) | |
2923 | fprintf_unfiltered (gdb_stdlog, | |
a71b5a38 | 2924 | "target_fileio_pread (%d,...,%d,%s) " |
7313baad | 2925 | "= %d (%d)\n", |
a71b5a38 | 2926 | fd, len, pulongest (offset), |
7313baad UW |
2927 | ret, ret != -1 ? 0 : *target_errno); |
2928 | return ret; | |
2929 | } | |
2930 | } | |
2931 | ||
2932 | *target_errno = FILEIO_ENOSYS; | |
2933 | return -1; | |
2934 | } | |
2935 | ||
2936 | /* Close FD on the target. Return 0, or -1 if an error occurs | |
2937 | (and set *TARGET_ERRNO). */ | |
2938 | int | |
2939 | target_fileio_close (int fd, int *target_errno) | |
2940 | { | |
2941 | struct target_ops *t; | |
2942 | ||
2943 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2944 | { | |
2945 | if (t->to_fileio_close != NULL) | |
2946 | { | |
df39ea25 | 2947 | int ret = t->to_fileio_close (t, fd, target_errno); |
7313baad UW |
2948 | |
2949 | if (targetdebug) | |
2950 | fprintf_unfiltered (gdb_stdlog, | |
2951 | "target_fileio_close (%d) = %d (%d)\n", | |
2952 | fd, ret, ret != -1 ? 0 : *target_errno); | |
2953 | return ret; | |
2954 | } | |
2955 | } | |
2956 | ||
2957 | *target_errno = FILEIO_ENOSYS; | |
2958 | return -1; | |
2959 | } | |
2960 | ||
2961 | /* Unlink FILENAME on the target. Return 0, or -1 if an error | |
2962 | occurs (and set *TARGET_ERRNO). */ | |
2963 | int | |
2964 | target_fileio_unlink (const char *filename, int *target_errno) | |
2965 | { | |
2966 | struct target_ops *t; | |
2967 | ||
2968 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2969 | { | |
2970 | if (t->to_fileio_unlink != NULL) | |
2971 | { | |
dbbca37d | 2972 | int ret = t->to_fileio_unlink (t, filename, target_errno); |
7313baad UW |
2973 | |
2974 | if (targetdebug) | |
2975 | fprintf_unfiltered (gdb_stdlog, | |
2976 | "target_fileio_unlink (%s) = %d (%d)\n", | |
2977 | filename, ret, ret != -1 ? 0 : *target_errno); | |
2978 | return ret; | |
2979 | } | |
2980 | } | |
2981 | ||
2982 | *target_errno = FILEIO_ENOSYS; | |
2983 | return -1; | |
2984 | } | |
2985 | ||
b9e7b9c3 UW |
2986 | /* Read value of symbolic link FILENAME on the target. Return a |
2987 | null-terminated string allocated via xmalloc, or NULL if an error | |
2988 | occurs (and set *TARGET_ERRNO). */ | |
2989 | char * | |
2990 | target_fileio_readlink (const char *filename, int *target_errno) | |
2991 | { | |
2992 | struct target_ops *t; | |
2993 | ||
2994 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
2995 | { | |
2996 | if (t->to_fileio_readlink != NULL) | |
2997 | { | |
fab5aa7c | 2998 | char *ret = t->to_fileio_readlink (t, filename, target_errno); |
b9e7b9c3 UW |
2999 | |
3000 | if (targetdebug) | |
3001 | fprintf_unfiltered (gdb_stdlog, | |
3002 | "target_fileio_readlink (%s) = %s (%d)\n", | |
3003 | filename, ret? ret : "(nil)", | |
3004 | ret? 0 : *target_errno); | |
3005 | return ret; | |
3006 | } | |
3007 | } | |
3008 | ||
3009 | *target_errno = FILEIO_ENOSYS; | |
3010 | return NULL; | |
3011 | } | |
3012 | ||
7313baad UW |
3013 | static void |
3014 | target_fileio_close_cleanup (void *opaque) | |
3015 | { | |
3016 | int fd = *(int *) opaque; | |
3017 | int target_errno; | |
3018 | ||
3019 | target_fileio_close (fd, &target_errno); | |
3020 | } | |
3021 | ||
3022 | /* Read target file FILENAME. Store the result in *BUF_P and | |
3023 | return the size of the transferred data. PADDING additional bytes are | |
3024 | available in *BUF_P. This is a helper function for | |
3025 | target_fileio_read_alloc; see the declaration of that function for more | |
3026 | information. */ | |
3027 | ||
3028 | static LONGEST | |
3029 | target_fileio_read_alloc_1 (const char *filename, | |
3030 | gdb_byte **buf_p, int padding) | |
3031 | { | |
3032 | struct cleanup *close_cleanup; | |
3033 | size_t buf_alloc, buf_pos; | |
3034 | gdb_byte *buf; | |
3035 | LONGEST n; | |
3036 | int fd; | |
3037 | int target_errno; | |
3038 | ||
3039 | fd = target_fileio_open (filename, FILEIO_O_RDONLY, 0700, &target_errno); | |
3040 | if (fd == -1) | |
3041 | return -1; | |
3042 | ||
3043 | close_cleanup = make_cleanup (target_fileio_close_cleanup, &fd); | |
3044 | ||
3045 | /* Start by reading up to 4K at a time. The target will throttle | |
3046 | this number down if necessary. */ | |
3047 | buf_alloc = 4096; | |
3048 | buf = xmalloc (buf_alloc); | |
3049 | buf_pos = 0; | |
3050 | while (1) | |
3051 | { | |
3052 | n = target_fileio_pread (fd, &buf[buf_pos], | |
3053 | buf_alloc - buf_pos - padding, buf_pos, | |
3054 | &target_errno); | |
3055 | if (n < 0) | |
3056 | { | |
3057 | /* An error occurred. */ | |
3058 | do_cleanups (close_cleanup); | |
3059 | xfree (buf); | |
3060 | return -1; | |
3061 | } | |
3062 | else if (n == 0) | |
3063 | { | |
3064 | /* Read all there was. */ | |
3065 | do_cleanups (close_cleanup); | |
3066 | if (buf_pos == 0) | |
3067 | xfree (buf); | |
3068 | else | |
3069 | *buf_p = buf; | |
3070 | return buf_pos; | |
3071 | } | |
3072 | ||
3073 | buf_pos += n; | |
3074 | ||
3075 | /* If the buffer is filling up, expand it. */ | |
3076 | if (buf_alloc < buf_pos * 2) | |
3077 | { | |
3078 | buf_alloc *= 2; | |
3079 | buf = xrealloc (buf, buf_alloc); | |
3080 | } | |
3081 | ||
3082 | QUIT; | |
3083 | } | |
3084 | } | |
3085 | ||
3086 | /* Read target file FILENAME. Store the result in *BUF_P and return | |
3087 | the size of the transferred data. See the declaration in "target.h" | |
3088 | function for more information about the return value. */ | |
3089 | ||
3090 | LONGEST | |
3091 | target_fileio_read_alloc (const char *filename, gdb_byte **buf_p) | |
3092 | { | |
3093 | return target_fileio_read_alloc_1 (filename, buf_p, 0); | |
3094 | } | |
3095 | ||
3096 | /* Read target file FILENAME. The result is NUL-terminated and | |
3097 | returned as a string, allocated using xmalloc. If an error occurs | |
3098 | or the transfer is unsupported, NULL is returned. Empty objects | |
3099 | are returned as allocated but empty strings. A warning is issued | |
3100 | if the result contains any embedded NUL bytes. */ | |
3101 | ||
3102 | char * | |
3103 | target_fileio_read_stralloc (const char *filename) | |
3104 | { | |
39086a0e PA |
3105 | gdb_byte *buffer; |
3106 | char *bufstr; | |
7313baad UW |
3107 | LONGEST i, transferred; |
3108 | ||
39086a0e PA |
3109 | transferred = target_fileio_read_alloc_1 (filename, &buffer, 1); |
3110 | bufstr = (char *) buffer; | |
7313baad UW |
3111 | |
3112 | if (transferred < 0) | |
3113 | return NULL; | |
3114 | ||
3115 | if (transferred == 0) | |
3116 | return xstrdup (""); | |
3117 | ||
39086a0e | 3118 | bufstr[transferred] = 0; |
7313baad UW |
3119 | |
3120 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
39086a0e PA |
3121 | for (i = strlen (bufstr); i < transferred; i++) |
3122 | if (bufstr[i] != 0) | |
7313baad UW |
3123 | { |
3124 | warning (_("target file %s " | |
3125 | "contained unexpected null characters"), | |
3126 | filename); | |
3127 | break; | |
3128 | } | |
3129 | ||
39086a0e | 3130 | return bufstr; |
7313baad UW |
3131 | } |
3132 | ||
3133 | ||
e0d24f8d | 3134 | static int |
31568a15 TT |
3135 | default_region_ok_for_hw_watchpoint (struct target_ops *self, |
3136 | CORE_ADDR addr, int len) | |
e0d24f8d | 3137 | { |
f5656ead | 3138 | return (len <= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT); |
ccaa32c7 GS |
3139 | } |
3140 | ||
5009afc5 AS |
3141 | static int |
3142 | default_watchpoint_addr_within_range (struct target_ops *target, | |
3143 | CORE_ADDR addr, | |
3144 | CORE_ADDR start, int length) | |
3145 | { | |
3146 | return addr >= start && addr < start + length; | |
3147 | } | |
3148 | ||
c2250ad1 UW |
3149 | static struct gdbarch * |
3150 | default_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
3151 | { | |
f5656ead | 3152 | return target_gdbarch (); |
c2250ad1 UW |
3153 | } |
3154 | ||
c906108c | 3155 | static int |
555bbdeb TT |
3156 | return_zero (struct target_ops *ignore) |
3157 | { | |
3158 | return 0; | |
3159 | } | |
3160 | ||
3161 | static int | |
3162 | return_zero_has_execution (struct target_ops *ignore, ptid_t ignore2) | |
c906108c SS |
3163 | { |
3164 | return 0; | |
3165 | } | |
3166 | ||
ed9a39eb JM |
3167 | /* |
3168 | * Find the next target down the stack from the specified target. | |
3169 | */ | |
3170 | ||
3171 | struct target_ops * | |
fba45db2 | 3172 | find_target_beneath (struct target_ops *t) |
ed9a39eb | 3173 | { |
258b763a | 3174 | return t->beneath; |
ed9a39eb JM |
3175 | } |
3176 | ||
8b06beed TT |
3177 | /* See target.h. */ |
3178 | ||
3179 | struct target_ops * | |
3180 | find_target_at (enum strata stratum) | |
3181 | { | |
3182 | struct target_ops *t; | |
3183 | ||
3184 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3185 | if (t->to_stratum == stratum) | |
3186 | return t; | |
3187 | ||
3188 | return NULL; | |
3189 | } | |
3190 | ||
c906108c SS |
3191 | \f |
3192 | /* The inferior process has died. Long live the inferior! */ | |
3193 | ||
3194 | void | |
fba45db2 | 3195 | generic_mourn_inferior (void) |
c906108c | 3196 | { |
7f9f62ba | 3197 | ptid_t ptid; |
c906108c | 3198 | |
7f9f62ba | 3199 | ptid = inferior_ptid; |
39f77062 | 3200 | inferior_ptid = null_ptid; |
7f9f62ba | 3201 | |
f59f708a PA |
3202 | /* Mark breakpoints uninserted in case something tries to delete a |
3203 | breakpoint while we delete the inferior's threads (which would | |
3204 | fail, since the inferior is long gone). */ | |
3205 | mark_breakpoints_out (); | |
3206 | ||
7f9f62ba PA |
3207 | if (!ptid_equal (ptid, null_ptid)) |
3208 | { | |
3209 | int pid = ptid_get_pid (ptid); | |
6c95b8df | 3210 | exit_inferior (pid); |
7f9f62ba PA |
3211 | } |
3212 | ||
f59f708a PA |
3213 | /* Note this wipes step-resume breakpoints, so needs to be done |
3214 | after exit_inferior, which ends up referencing the step-resume | |
3215 | breakpoints through clear_thread_inferior_resources. */ | |
c906108c | 3216 | breakpoint_init_inferior (inf_exited); |
f59f708a | 3217 | |
c906108c SS |
3218 | registers_changed (); |
3219 | ||
c906108c SS |
3220 | reopen_exec_file (); |
3221 | reinit_frame_cache (); | |
3222 | ||
9a4105ab AC |
3223 | if (deprecated_detach_hook) |
3224 | deprecated_detach_hook (); | |
c906108c SS |
3225 | } |
3226 | \f | |
fd0a2a6f MK |
3227 | /* Convert a normal process ID to a string. Returns the string in a |
3228 | static buffer. */ | |
c906108c SS |
3229 | |
3230 | char * | |
39f77062 | 3231 | normal_pid_to_str (ptid_t ptid) |
c906108c | 3232 | { |
fd0a2a6f | 3233 | static char buf[32]; |
c906108c | 3234 | |
5fff8fc0 | 3235 | xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid)); |
c906108c SS |
3236 | return buf; |
3237 | } | |
3238 | ||
2c0b251b | 3239 | static char * |
770234d3 | 3240 | default_pid_to_str (struct target_ops *ops, ptid_t ptid) |
117de6a9 PA |
3241 | { |
3242 | return normal_pid_to_str (ptid); | |
3243 | } | |
3244 | ||
9b4eba8e HZ |
3245 | /* Error-catcher for target_find_memory_regions. */ |
3246 | static int | |
2e73927c TT |
3247 | dummy_find_memory_regions (struct target_ops *self, |
3248 | find_memory_region_ftype ignore1, void *ignore2) | |
be4d1333 | 3249 | { |
9b4eba8e | 3250 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3251 | return 0; |
3252 | } | |
3253 | ||
9b4eba8e HZ |
3254 | /* Error-catcher for target_make_corefile_notes. */ |
3255 | static char * | |
fc6691b2 TT |
3256 | dummy_make_corefile_notes (struct target_ops *self, |
3257 | bfd *ignore1, int *ignore2) | |
be4d1333 | 3258 | { |
9b4eba8e | 3259 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3260 | return NULL; |
3261 | } | |
3262 | ||
c906108c SS |
3263 | /* Set up the handful of non-empty slots needed by the dummy target |
3264 | vector. */ | |
3265 | ||
3266 | static void | |
fba45db2 | 3267 | init_dummy_target (void) |
c906108c SS |
3268 | { |
3269 | dummy_target.to_shortname = "None"; | |
3270 | dummy_target.to_longname = "None"; | |
3271 | dummy_target.to_doc = ""; | |
c906108c | 3272 | dummy_target.to_create_inferior = find_default_create_inferior; |
9908b566 | 3273 | dummy_target.to_supports_non_stop = find_default_supports_non_stop; |
03583c20 UW |
3274 | dummy_target.to_supports_disable_randomization |
3275 | = find_default_supports_disable_randomization; | |
c906108c | 3276 | dummy_target.to_stratum = dummy_stratum; |
555bbdeb TT |
3277 | dummy_target.to_has_all_memory = return_zero; |
3278 | dummy_target.to_has_memory = return_zero; | |
3279 | dummy_target.to_has_stack = return_zero; | |
3280 | dummy_target.to_has_registers = return_zero; | |
3281 | dummy_target.to_has_execution = return_zero_has_execution; | |
c906108c | 3282 | dummy_target.to_magic = OPS_MAGIC; |
1101cb7b TT |
3283 | |
3284 | install_dummy_methods (&dummy_target); | |
c906108c | 3285 | } |
c906108c | 3286 | \f |
c906108c | 3287 | static void |
fba45db2 | 3288 | debug_to_open (char *args, int from_tty) |
c906108c SS |
3289 | { |
3290 | debug_target.to_open (args, from_tty); | |
3291 | ||
96baa820 | 3292 | fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty); |
c906108c SS |
3293 | } |
3294 | ||
f1c07ab0 | 3295 | void |
460014f5 | 3296 | target_close (struct target_ops *targ) |
f1c07ab0 | 3297 | { |
7fdc1521 TT |
3298 | gdb_assert (!target_is_pushed (targ)); |
3299 | ||
f1c07ab0 | 3300 | if (targ->to_xclose != NULL) |
460014f5 | 3301 | targ->to_xclose (targ); |
f1c07ab0 | 3302 | else if (targ->to_close != NULL) |
de90e03d | 3303 | targ->to_close (targ); |
947b8855 PA |
3304 | |
3305 | if (targetdebug) | |
460014f5 | 3306 | fprintf_unfiltered (gdb_stdlog, "target_close ()\n"); |
f1c07ab0 AC |
3307 | } |
3308 | ||
136d6dae VP |
3309 | void |
3310 | target_attach (char *args, int from_tty) | |
3311 | { | |
e9a29200 TT |
3312 | current_target.to_attach (¤t_target, args, from_tty); |
3313 | if (targetdebug) | |
3314 | fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n", | |
3315 | args, from_tty); | |
136d6dae VP |
3316 | } |
3317 | ||
28439f5e PA |
3318 | int |
3319 | target_thread_alive (ptid_t ptid) | |
c906108c | 3320 | { |
cbffc065 | 3321 | int retval; |
28439f5e | 3322 | |
cbffc065 TT |
3323 | retval = current_target.to_thread_alive (¤t_target, ptid); |
3324 | if (targetdebug) | |
3325 | fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n", | |
3326 | ptid_get_pid (ptid), retval); | |
28439f5e | 3327 | |
cbffc065 | 3328 | return retval; |
28439f5e PA |
3329 | } |
3330 | ||
3331 | void | |
3332 | target_find_new_threads (void) | |
3333 | { | |
09b0dc2b TT |
3334 | current_target.to_find_new_threads (¤t_target); |
3335 | if (targetdebug) | |
3336 | fprintf_unfiltered (gdb_stdlog, "target_find_new_threads ()\n"); | |
c906108c SS |
3337 | } |
3338 | ||
d914c394 SS |
3339 | void |
3340 | target_stop (ptid_t ptid) | |
3341 | { | |
3342 | if (!may_stop) | |
3343 | { | |
3344 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3345 | return; | |
3346 | } | |
3347 | ||
1eab8a48 | 3348 | (*current_target.to_stop) (¤t_target, ptid); |
d914c394 SS |
3349 | } |
3350 | ||
c906108c | 3351 | static void |
f045800c | 3352 | debug_to_post_attach (struct target_ops *self, int pid) |
c906108c | 3353 | { |
f045800c | 3354 | debug_target.to_post_attach (&debug_target, pid); |
c906108c | 3355 | |
28439f5e | 3356 | fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid); |
c906108c SS |
3357 | } |
3358 | ||
09826ec5 PA |
3359 | /* Concatenate ELEM to LIST, a comma separate list, and return the |
3360 | result. The LIST incoming argument is released. */ | |
3361 | ||
3362 | static char * | |
3363 | str_comma_list_concat_elem (char *list, const char *elem) | |
3364 | { | |
3365 | if (list == NULL) | |
3366 | return xstrdup (elem); | |
3367 | else | |
3368 | return reconcat (list, list, ", ", elem, (char *) NULL); | |
3369 | } | |
3370 | ||
3371 | /* Helper for target_options_to_string. If OPT is present in | |
3372 | TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET. | |
3373 | Returns the new resulting string. OPT is removed from | |
3374 | TARGET_OPTIONS. */ | |
3375 | ||
3376 | static char * | |
3377 | do_option (int *target_options, char *ret, | |
3378 | int opt, char *opt_str) | |
3379 | { | |
3380 | if ((*target_options & opt) != 0) | |
3381 | { | |
3382 | ret = str_comma_list_concat_elem (ret, opt_str); | |
3383 | *target_options &= ~opt; | |
3384 | } | |
3385 | ||
3386 | return ret; | |
3387 | } | |
3388 | ||
3389 | char * | |
3390 | target_options_to_string (int target_options) | |
3391 | { | |
3392 | char *ret = NULL; | |
3393 | ||
3394 | #define DO_TARG_OPTION(OPT) \ | |
3395 | ret = do_option (&target_options, ret, OPT, #OPT) | |
3396 | ||
3397 | DO_TARG_OPTION (TARGET_WNOHANG); | |
3398 | ||
3399 | if (target_options != 0) | |
3400 | ret = str_comma_list_concat_elem (ret, "unknown???"); | |
3401 | ||
3402 | if (ret == NULL) | |
3403 | ret = xstrdup (""); | |
3404 | return ret; | |
3405 | } | |
3406 | ||
bf0c5130 | 3407 | static void |
56be3814 UW |
3408 | debug_print_register (const char * func, |
3409 | struct regcache *regcache, int regno) | |
bf0c5130 | 3410 | { |
f8d29908 | 3411 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
5d502164 | 3412 | |
bf0c5130 | 3413 | fprintf_unfiltered (gdb_stdlog, "%s ", func); |
f8d29908 | 3414 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) |
f8d29908 UW |
3415 | && gdbarch_register_name (gdbarch, regno) != NULL |
3416 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') | |
3417 | fprintf_unfiltered (gdb_stdlog, "(%s)", | |
3418 | gdbarch_register_name (gdbarch, regno)); | |
bf0c5130 AC |
3419 | else |
3420 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
0ff58721 | 3421 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) |
bf0c5130 | 3422 | { |
e17a4113 | 3423 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
f8d29908 | 3424 | int i, size = register_size (gdbarch, regno); |
e362b510 | 3425 | gdb_byte buf[MAX_REGISTER_SIZE]; |
5d502164 | 3426 | |
0ff58721 | 3427 | regcache_raw_collect (regcache, regno, buf); |
bf0c5130 | 3428 | fprintf_unfiltered (gdb_stdlog, " = "); |
81c4a259 | 3429 | for (i = 0; i < size; i++) |
bf0c5130 AC |
3430 | { |
3431 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
3432 | } | |
81c4a259 | 3433 | if (size <= sizeof (LONGEST)) |
bf0c5130 | 3434 | { |
e17a4113 | 3435 | ULONGEST val = extract_unsigned_integer (buf, size, byte_order); |
5d502164 | 3436 | |
0b1553bc UW |
3437 | fprintf_unfiltered (gdb_stdlog, " %s %s", |
3438 | core_addr_to_string_nz (val), plongest (val)); | |
bf0c5130 AC |
3439 | } |
3440 | } | |
3441 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
3442 | } | |
3443 | ||
28439f5e PA |
3444 | void |
3445 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 3446 | { |
ad5989bd TT |
3447 | current_target.to_fetch_registers (¤t_target, regcache, regno); |
3448 | if (targetdebug) | |
3449 | debug_print_register ("target_fetch_registers", regcache, regno); | |
c906108c SS |
3450 | } |
3451 | ||
28439f5e PA |
3452 | void |
3453 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 3454 | { |
28439f5e | 3455 | struct target_ops *t; |
5d502164 | 3456 | |
d914c394 SS |
3457 | if (!may_write_registers) |
3458 | error (_("Writing to registers is not allowed (regno %d)"), regno); | |
3459 | ||
6b84065d TT |
3460 | current_target.to_store_registers (¤t_target, regcache, regno); |
3461 | if (targetdebug) | |
28439f5e | 3462 | { |
6b84065d | 3463 | debug_print_register ("target_store_registers", regcache, regno); |
28439f5e | 3464 | } |
c906108c SS |
3465 | } |
3466 | ||
dc146f7c VP |
3467 | int |
3468 | target_core_of_thread (ptid_t ptid) | |
3469 | { | |
9e538d0d | 3470 | int retval = current_target.to_core_of_thread (¤t_target, ptid); |
dc146f7c | 3471 | |
9e538d0d TT |
3472 | if (targetdebug) |
3473 | fprintf_unfiltered (gdb_stdlog, | |
3474 | "target_core_of_thread (%d) = %d\n", | |
3475 | ptid_get_pid (ptid), retval); | |
3476 | return retval; | |
dc146f7c VP |
3477 | } |
3478 | ||
4a5e7a5b PA |
3479 | int |
3480 | target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3481 | { | |
eb276a6b TT |
3482 | int retval = current_target.to_verify_memory (¤t_target, |
3483 | data, memaddr, size); | |
5d502164 | 3484 | |
eb276a6b TT |
3485 | if (targetdebug) |
3486 | fprintf_unfiltered (gdb_stdlog, | |
3487 | "target_verify_memory (%s, %s) = %d\n", | |
3488 | paddress (target_gdbarch (), memaddr), | |
3489 | pulongest (size), | |
3490 | retval); | |
3491 | return retval; | |
4a5e7a5b PA |
3492 | } |
3493 | ||
9c06b0b4 TJB |
3494 | /* The documentation for this function is in its prototype declaration in |
3495 | target.h. */ | |
3496 | ||
3497 | int | |
3498 | target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
3499 | { | |
cd4ae029 | 3500 | int ret; |
9c06b0b4 | 3501 | |
cd4ae029 TT |
3502 | ret = current_target.to_insert_mask_watchpoint (¤t_target, |
3503 | addr, mask, rw); | |
9c06b0b4 | 3504 | |
cd4ae029 TT |
3505 | if (targetdebug) |
3506 | fprintf_unfiltered (gdb_stdlog, "\ | |
9c06b0b4 | 3507 | target_insert_mask_watchpoint (%s, %s, %d) = %d\n", |
cd4ae029 TT |
3508 | core_addr_to_string (addr), |
3509 | core_addr_to_string (mask), rw, ret); | |
3510 | ||
3511 | return ret; | |
9c06b0b4 TJB |
3512 | } |
3513 | ||
3514 | /* The documentation for this function is in its prototype declaration in | |
3515 | target.h. */ | |
3516 | ||
3517 | int | |
3518 | target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
3519 | { | |
8b1c364c | 3520 | int ret; |
9c06b0b4 | 3521 | |
8b1c364c TT |
3522 | ret = current_target.to_remove_mask_watchpoint (¤t_target, |
3523 | addr, mask, rw); | |
9c06b0b4 | 3524 | |
8b1c364c TT |
3525 | if (targetdebug) |
3526 | fprintf_unfiltered (gdb_stdlog, "\ | |
9c06b0b4 | 3527 | target_remove_mask_watchpoint (%s, %s, %d) = %d\n", |
8b1c364c TT |
3528 | core_addr_to_string (addr), |
3529 | core_addr_to_string (mask), rw, ret); | |
9c06b0b4 | 3530 | |
8b1c364c | 3531 | return ret; |
9c06b0b4 TJB |
3532 | } |
3533 | ||
3534 | /* The documentation for this function is in its prototype declaration | |
3535 | in target.h. */ | |
3536 | ||
3537 | int | |
3538 | target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask) | |
3539 | { | |
6c7e5e5c TT |
3540 | return current_target.to_masked_watch_num_registers (¤t_target, |
3541 | addr, mask); | |
9c06b0b4 TJB |
3542 | } |
3543 | ||
f1310107 TJB |
3544 | /* The documentation for this function is in its prototype declaration |
3545 | in target.h. */ | |
3546 | ||
3547 | int | |
3548 | target_ranged_break_num_registers (void) | |
3549 | { | |
a134316b | 3550 | return current_target.to_ranged_break_num_registers (¤t_target); |
f1310107 TJB |
3551 | } |
3552 | ||
02d27625 MM |
3553 | /* See target.h. */ |
3554 | ||
02d27625 MM |
3555 | struct btrace_target_info * |
3556 | target_enable_btrace (ptid_t ptid) | |
3557 | { | |
6dc7fcf4 | 3558 | return current_target.to_enable_btrace (¤t_target, ptid); |
02d27625 MM |
3559 | } |
3560 | ||
3561 | /* See target.h. */ | |
3562 | ||
3563 | void | |
3564 | target_disable_btrace (struct btrace_target_info *btinfo) | |
3565 | { | |
8dc292d3 | 3566 | current_target.to_disable_btrace (¤t_target, btinfo); |
02d27625 MM |
3567 | } |
3568 | ||
3569 | /* See target.h. */ | |
3570 | ||
3571 | void | |
3572 | target_teardown_btrace (struct btrace_target_info *btinfo) | |
3573 | { | |
9ace480d | 3574 | current_target.to_teardown_btrace (¤t_target, btinfo); |
02d27625 MM |
3575 | } |
3576 | ||
3577 | /* See target.h. */ | |
3578 | ||
969c39fb MM |
3579 | enum btrace_error |
3580 | target_read_btrace (VEC (btrace_block_s) **btrace, | |
3581 | struct btrace_target_info *btinfo, | |
02d27625 MM |
3582 | enum btrace_read_type type) |
3583 | { | |
eb5b20d4 | 3584 | return current_target.to_read_btrace (¤t_target, btrace, btinfo, type); |
02d27625 MM |
3585 | } |
3586 | ||
d02ed0bb MM |
3587 | /* See target.h. */ |
3588 | ||
7c1687a9 MM |
3589 | void |
3590 | target_stop_recording (void) | |
3591 | { | |
ee97f592 | 3592 | current_target.to_stop_recording (¤t_target); |
7c1687a9 MM |
3593 | } |
3594 | ||
3595 | /* See target.h. */ | |
3596 | ||
d02ed0bb MM |
3597 | void |
3598 | target_info_record (void) | |
3599 | { | |
3600 | struct target_ops *t; | |
3601 | ||
3602 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3603 | if (t->to_info_record != NULL) | |
3604 | { | |
630d6a4a | 3605 | t->to_info_record (t); |
d02ed0bb MM |
3606 | return; |
3607 | } | |
3608 | ||
3609 | tcomplain (); | |
3610 | } | |
3611 | ||
3612 | /* See target.h. */ | |
3613 | ||
3614 | void | |
85e1311a | 3615 | target_save_record (const char *filename) |
d02ed0bb | 3616 | { |
f09e2107 | 3617 | current_target.to_save_record (¤t_target, filename); |
d02ed0bb MM |
3618 | } |
3619 | ||
3620 | /* See target.h. */ | |
3621 | ||
3622 | int | |
3623 | target_supports_delete_record (void) | |
3624 | { | |
3625 | struct target_ops *t; | |
3626 | ||
3627 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3628 | if (t->to_delete_record != NULL) | |
3629 | return 1; | |
3630 | ||
3631 | return 0; | |
3632 | } | |
3633 | ||
3634 | /* See target.h. */ | |
3635 | ||
3636 | void | |
3637 | target_delete_record (void) | |
3638 | { | |
07366925 | 3639 | current_target.to_delete_record (¤t_target); |
d02ed0bb MM |
3640 | } |
3641 | ||
3642 | /* See target.h. */ | |
3643 | ||
3644 | int | |
3645 | target_record_is_replaying (void) | |
3646 | { | |
dd2e9d25 | 3647 | return current_target.to_record_is_replaying (¤t_target); |
d02ed0bb MM |
3648 | } |
3649 | ||
3650 | /* See target.h. */ | |
3651 | ||
3652 | void | |
3653 | target_goto_record_begin (void) | |
3654 | { | |
671e76cc | 3655 | current_target.to_goto_record_begin (¤t_target); |
d02ed0bb MM |
3656 | } |
3657 | ||
3658 | /* See target.h. */ | |
3659 | ||
3660 | void | |
3661 | target_goto_record_end (void) | |
3662 | { | |
e9179bb3 | 3663 | current_target.to_goto_record_end (¤t_target); |
d02ed0bb MM |
3664 | } |
3665 | ||
3666 | /* See target.h. */ | |
3667 | ||
3668 | void | |
3669 | target_goto_record (ULONGEST insn) | |
3670 | { | |
05969c84 | 3671 | current_target.to_goto_record (¤t_target, insn); |
d02ed0bb MM |
3672 | } |
3673 | ||
67c86d06 MM |
3674 | /* See target.h. */ |
3675 | ||
3676 | void | |
3677 | target_insn_history (int size, int flags) | |
3678 | { | |
3679abfa | 3679 | current_target.to_insn_history (¤t_target, size, flags); |
67c86d06 MM |
3680 | } |
3681 | ||
3682 | /* See target.h. */ | |
3683 | ||
3684 | void | |
3685 | target_insn_history_from (ULONGEST from, int size, int flags) | |
3686 | { | |
8444ab58 | 3687 | current_target.to_insn_history_from (¤t_target, from, size, flags); |
67c86d06 MM |
3688 | } |
3689 | ||
3690 | /* See target.h. */ | |
3691 | ||
3692 | void | |
3693 | target_insn_history_range (ULONGEST begin, ULONGEST end, int flags) | |
3694 | { | |
c29302cc | 3695 | current_target.to_insn_history_range (¤t_target, begin, end, flags); |
67c86d06 MM |
3696 | } |
3697 | ||
15984c13 MM |
3698 | /* See target.h. */ |
3699 | ||
3700 | void | |
3701 | target_call_history (int size, int flags) | |
3702 | { | |
170049d4 | 3703 | current_target.to_call_history (¤t_target, size, flags); |
15984c13 MM |
3704 | } |
3705 | ||
3706 | /* See target.h. */ | |
3707 | ||
3708 | void | |
3709 | target_call_history_from (ULONGEST begin, int size, int flags) | |
3710 | { | |
16fc27d6 | 3711 | current_target.to_call_history_from (¤t_target, begin, size, flags); |
15984c13 MM |
3712 | } |
3713 | ||
3714 | /* See target.h. */ | |
3715 | ||
3716 | void | |
3717 | target_call_history_range (ULONGEST begin, ULONGEST end, int flags) | |
3718 | { | |
115d9817 | 3719 | current_target.to_call_history_range (¤t_target, begin, end, flags); |
15984c13 MM |
3720 | } |
3721 | ||
c906108c | 3722 | static void |
f32dbf8c | 3723 | debug_to_prepare_to_store (struct target_ops *self, struct regcache *regcache) |
c906108c | 3724 | { |
f32dbf8c | 3725 | debug_target.to_prepare_to_store (&debug_target, regcache); |
c906108c | 3726 | |
96baa820 | 3727 | fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n"); |
c906108c SS |
3728 | } |
3729 | ||
ea001bdc MM |
3730 | /* See target.h. */ |
3731 | ||
3732 | const struct frame_unwind * | |
3733 | target_get_unwinder (void) | |
3734 | { | |
ac01945b | 3735 | return current_target.to_get_unwinder (¤t_target); |
ea001bdc MM |
3736 | } |
3737 | ||
3738 | /* See target.h. */ | |
3739 | ||
3740 | const struct frame_unwind * | |
3741 | target_get_tailcall_unwinder (void) | |
3742 | { | |
ac01945b | 3743 | return current_target.to_get_tailcall_unwinder (¤t_target); |
ea001bdc MM |
3744 | } |
3745 | ||
c0eca49f | 3746 | /* Default implementation of to_decr_pc_after_break. */ |
118e6252 | 3747 | |
c0eca49f TT |
3748 | static CORE_ADDR |
3749 | default_target_decr_pc_after_break (struct target_ops *ops, | |
118e6252 MM |
3750 | struct gdbarch *gdbarch) |
3751 | { | |
118e6252 MM |
3752 | return gdbarch_decr_pc_after_break (gdbarch); |
3753 | } | |
3754 | ||
3755 | /* See target.h. */ | |
3756 | ||
3757 | CORE_ADDR | |
3758 | target_decr_pc_after_break (struct gdbarch *gdbarch) | |
3759 | { | |
c0eca49f | 3760 | return current_target.to_decr_pc_after_break (¤t_target, gdbarch); |
118e6252 MM |
3761 | } |
3762 | ||
c906108c | 3763 | static void |
fba45db2 | 3764 | debug_to_files_info (struct target_ops *target) |
c906108c SS |
3765 | { |
3766 | debug_target.to_files_info (target); | |
3767 | ||
96baa820 | 3768 | fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n"); |
c906108c SS |
3769 | } |
3770 | ||
3771 | static int | |
3db08215 | 3772 | debug_to_insert_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, |
a6d9a66e | 3773 | struct bp_target_info *bp_tgt) |
c906108c SS |
3774 | { |
3775 | int retval; | |
3776 | ||
6b84065d | 3777 | retval = debug_target.to_insert_breakpoint (&debug_target, gdbarch, bp_tgt); |
c906108c | 3778 | |
96baa820 | 3779 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
3780 | "target_insert_breakpoint (%s, xxx) = %ld\n", |
3781 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 3782 | (unsigned long) retval); |
c906108c SS |
3783 | return retval; |
3784 | } | |
3785 | ||
3786 | static int | |
3db08215 | 3787 | debug_to_remove_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, |
a6d9a66e | 3788 | struct bp_target_info *bp_tgt) |
c906108c SS |
3789 | { |
3790 | int retval; | |
3791 | ||
6b84065d | 3792 | retval = debug_target.to_remove_breakpoint (&debug_target, gdbarch, bp_tgt); |
c906108c | 3793 | |
96baa820 | 3794 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
3795 | "target_remove_breakpoint (%s, xxx) = %ld\n", |
3796 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 3797 | (unsigned long) retval); |
c906108c SS |
3798 | return retval; |
3799 | } | |
3800 | ||
ccaa32c7 | 3801 | static int |
5461485a TT |
3802 | debug_to_can_use_hw_breakpoint (struct target_ops *self, |
3803 | int type, int cnt, int from_tty) | |
ccaa32c7 GS |
3804 | { |
3805 | int retval; | |
3806 | ||
5461485a TT |
3807 | retval = debug_target.to_can_use_hw_breakpoint (&debug_target, |
3808 | type, cnt, from_tty); | |
ccaa32c7 GS |
3809 | |
3810 | fprintf_unfiltered (gdb_stdlog, | |
3811 | "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n", | |
3812 | (unsigned long) type, | |
3813 | (unsigned long) cnt, | |
3814 | (unsigned long) from_tty, | |
3815 | (unsigned long) retval); | |
3816 | return retval; | |
3817 | } | |
3818 | ||
e0d24f8d | 3819 | static int |
31568a15 TT |
3820 | debug_to_region_ok_for_hw_watchpoint (struct target_ops *self, |
3821 | CORE_ADDR addr, int len) | |
e0d24f8d WZ |
3822 | { |
3823 | CORE_ADDR retval; | |
3824 | ||
31568a15 TT |
3825 | retval = debug_target.to_region_ok_for_hw_watchpoint (&debug_target, |
3826 | addr, len); | |
e0d24f8d WZ |
3827 | |
3828 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3829 | "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n", |
3830 | core_addr_to_string (addr), (unsigned long) len, | |
3831 | core_addr_to_string (retval)); | |
e0d24f8d WZ |
3832 | return retval; |
3833 | } | |
3834 | ||
0cf6dd15 | 3835 | static int |
c3a5ff89 TT |
3836 | debug_to_can_accel_watchpoint_condition (struct target_ops *self, |
3837 | CORE_ADDR addr, int len, int rw, | |
0cf6dd15 TJB |
3838 | struct expression *cond) |
3839 | { | |
3840 | int retval; | |
3841 | ||
c3a5ff89 TT |
3842 | retval = debug_target.to_can_accel_watchpoint_condition (&debug_target, |
3843 | addr, len, | |
3e43a32a | 3844 | rw, cond); |
0cf6dd15 TJB |
3845 | |
3846 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
3847 | "target_can_accel_watchpoint_condition " |
3848 | "(%s, %d, %d, %s) = %ld\n", | |
bd91e7ae OS |
3849 | core_addr_to_string (addr), len, rw, |
3850 | host_address_to_string (cond), (unsigned long) retval); | |
0cf6dd15 TJB |
3851 | return retval; |
3852 | } | |
3853 | ||
ccaa32c7 | 3854 | static int |
6a109b6b | 3855 | debug_to_stopped_by_watchpoint (struct target_ops *ops) |
ccaa32c7 GS |
3856 | { |
3857 | int retval; | |
3858 | ||
6a109b6b | 3859 | retval = debug_target.to_stopped_by_watchpoint (&debug_target); |
ccaa32c7 GS |
3860 | |
3861 | fprintf_unfiltered (gdb_stdlog, | |
d92524f1 | 3862 | "target_stopped_by_watchpoint () = %ld\n", |
ccaa32c7 GS |
3863 | (unsigned long) retval); |
3864 | return retval; | |
3865 | } | |
3866 | ||
4aa7a7f5 JJ |
3867 | static int |
3868 | debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr) | |
ccaa32c7 | 3869 | { |
4aa7a7f5 | 3870 | int retval; |
ccaa32c7 | 3871 | |
4aa7a7f5 | 3872 | retval = debug_target.to_stopped_data_address (target, addr); |
ccaa32c7 GS |
3873 | |
3874 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3875 | "target_stopped_data_address ([%s]) = %ld\n", |
3876 | core_addr_to_string (*addr), | |
4aa7a7f5 | 3877 | (unsigned long)retval); |
ccaa32c7 GS |
3878 | return retval; |
3879 | } | |
3880 | ||
5009afc5 AS |
3881 | static int |
3882 | debug_to_watchpoint_addr_within_range (struct target_ops *target, | |
3883 | CORE_ADDR addr, | |
3884 | CORE_ADDR start, int length) | |
3885 | { | |
3886 | int retval; | |
3887 | ||
3888 | retval = debug_target.to_watchpoint_addr_within_range (target, addr, | |
3889 | start, length); | |
3890 | ||
3891 | fprintf_filtered (gdb_stdlog, | |
bd91e7ae OS |
3892 | "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n", |
3893 | core_addr_to_string (addr), core_addr_to_string (start), | |
3894 | length, retval); | |
5009afc5 AS |
3895 | return retval; |
3896 | } | |
3897 | ||
ccaa32c7 | 3898 | static int |
23a26771 TT |
3899 | debug_to_insert_hw_breakpoint (struct target_ops *self, |
3900 | struct gdbarch *gdbarch, | |
a6d9a66e | 3901 | struct bp_target_info *bp_tgt) |
ccaa32c7 GS |
3902 | { |
3903 | int retval; | |
3904 | ||
23a26771 TT |
3905 | retval = debug_target.to_insert_hw_breakpoint (&debug_target, |
3906 | gdbarch, bp_tgt); | |
ccaa32c7 GS |
3907 | |
3908 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3909 | "target_insert_hw_breakpoint (%s, xxx) = %ld\n", |
3910 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
3911 | (unsigned long) retval); |
3912 | return retval; | |
3913 | } | |
3914 | ||
3915 | static int | |
a64dc96c TT |
3916 | debug_to_remove_hw_breakpoint (struct target_ops *self, |
3917 | struct gdbarch *gdbarch, | |
a6d9a66e | 3918 | struct bp_target_info *bp_tgt) |
ccaa32c7 GS |
3919 | { |
3920 | int retval; | |
3921 | ||
a64dc96c TT |
3922 | retval = debug_target.to_remove_hw_breakpoint (&debug_target, |
3923 | gdbarch, bp_tgt); | |
ccaa32c7 GS |
3924 | |
3925 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3926 | "target_remove_hw_breakpoint (%s, xxx) = %ld\n", |
3927 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
3928 | (unsigned long) retval); |
3929 | return retval; | |
3930 | } | |
3931 | ||
3932 | static int | |
7bb99c53 TT |
3933 | debug_to_insert_watchpoint (struct target_ops *self, |
3934 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 3935 | struct expression *cond) |
ccaa32c7 GS |
3936 | { |
3937 | int retval; | |
3938 | ||
7bb99c53 TT |
3939 | retval = debug_target.to_insert_watchpoint (&debug_target, |
3940 | addr, len, type, cond); | |
ccaa32c7 GS |
3941 | |
3942 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3943 | "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n", |
3944 | core_addr_to_string (addr), len, type, | |
3945 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
3946 | return retval; |
3947 | } | |
3948 | ||
3949 | static int | |
11b5219a TT |
3950 | debug_to_remove_watchpoint (struct target_ops *self, |
3951 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 3952 | struct expression *cond) |
ccaa32c7 GS |
3953 | { |
3954 | int retval; | |
3955 | ||
11b5219a TT |
3956 | retval = debug_target.to_remove_watchpoint (&debug_target, |
3957 | addr, len, type, cond); | |
ccaa32c7 GS |
3958 | |
3959 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3960 | "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n", |
3961 | core_addr_to_string (addr), len, type, | |
3962 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
3963 | return retval; |
3964 | } | |
3965 | ||
c906108c | 3966 | static void |
c42bf286 | 3967 | debug_to_terminal_init (struct target_ops *self) |
c906108c | 3968 | { |
c42bf286 | 3969 | debug_target.to_terminal_init (&debug_target); |
c906108c | 3970 | |
96baa820 | 3971 | fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n"); |
c906108c SS |
3972 | } |
3973 | ||
3974 | static void | |
d2f640d4 | 3975 | debug_to_terminal_inferior (struct target_ops *self) |
c906108c | 3976 | { |
d2f640d4 | 3977 | debug_target.to_terminal_inferior (&debug_target); |
c906108c | 3978 | |
96baa820 | 3979 | fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n"); |
c906108c SS |
3980 | } |
3981 | ||
3982 | static void | |
2e1e1a19 | 3983 | debug_to_terminal_ours_for_output (struct target_ops *self) |
c906108c | 3984 | { |
2e1e1a19 | 3985 | debug_target.to_terminal_ours_for_output (&debug_target); |
c906108c | 3986 | |
96baa820 | 3987 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n"); |
c906108c SS |
3988 | } |
3989 | ||
3990 | static void | |
e3594fd1 | 3991 | debug_to_terminal_ours (struct target_ops *self) |
c906108c | 3992 | { |
e3594fd1 | 3993 | debug_target.to_terminal_ours (&debug_target); |
c906108c | 3994 | |
96baa820 | 3995 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n"); |
c906108c SS |
3996 | } |
3997 | ||
a790ad35 | 3998 | static void |
ae3bd431 | 3999 | debug_to_terminal_save_ours (struct target_ops *self) |
a790ad35 | 4000 | { |
ae3bd431 | 4001 | debug_target.to_terminal_save_ours (&debug_target); |
a790ad35 SC |
4002 | |
4003 | fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n"); | |
4004 | } | |
4005 | ||
c906108c | 4006 | static void |
0a4f40a2 TT |
4007 | debug_to_terminal_info (struct target_ops *self, |
4008 | const char *arg, int from_tty) | |
c906108c | 4009 | { |
0a4f40a2 | 4010 | debug_target.to_terminal_info (&debug_target, arg, from_tty); |
c906108c | 4011 | |
96baa820 | 4012 | fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg, |
c906108c SS |
4013 | from_tty); |
4014 | } | |
4015 | ||
c906108c | 4016 | static void |
71a9f134 | 4017 | debug_to_load (struct target_ops *self, char *args, int from_tty) |
c906108c | 4018 | { |
71a9f134 | 4019 | debug_target.to_load (&debug_target, args, from_tty); |
c906108c | 4020 | |
96baa820 | 4021 | fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty); |
c906108c SS |
4022 | } |
4023 | ||
c906108c | 4024 | static void |
2e97a79e | 4025 | debug_to_post_startup_inferior (struct target_ops *self, ptid_t ptid) |
c906108c | 4026 | { |
2e97a79e | 4027 | debug_target.to_post_startup_inferior (&debug_target, ptid); |
c906108c | 4028 | |
96baa820 | 4029 | fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n", |
dfd4cc63 | 4030 | ptid_get_pid (ptid)); |
c906108c SS |
4031 | } |
4032 | ||
77b06cd7 | 4033 | static int |
a863b201 | 4034 | debug_to_insert_fork_catchpoint (struct target_ops *self, int pid) |
c906108c | 4035 | { |
77b06cd7 TJB |
4036 | int retval; |
4037 | ||
a863b201 | 4038 | retval = debug_target.to_insert_fork_catchpoint (&debug_target, pid); |
77b06cd7 TJB |
4039 | |
4040 | fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d) = %d\n", | |
4041 | pid, retval); | |
c906108c | 4042 | |
77b06cd7 | 4043 | return retval; |
c906108c SS |
4044 | } |
4045 | ||
4046 | static int | |
973fc227 | 4047 | debug_to_remove_fork_catchpoint (struct target_ops *self, int pid) |
c906108c | 4048 | { |
c5aa993b | 4049 | int retval; |
c906108c | 4050 | |
973fc227 | 4051 | retval = debug_target.to_remove_fork_catchpoint (&debug_target, pid); |
c906108c | 4052 | |
96baa820 | 4053 | fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n", |
c5aa993b | 4054 | pid, retval); |
c906108c SS |
4055 | |
4056 | return retval; | |
4057 | } | |
4058 | ||
77b06cd7 | 4059 | static int |
3ecc7da0 | 4060 | debug_to_insert_vfork_catchpoint (struct target_ops *self, int pid) |
c906108c | 4061 | { |
77b06cd7 TJB |
4062 | int retval; |
4063 | ||
3ecc7da0 | 4064 | retval = debug_target.to_insert_vfork_catchpoint (&debug_target, pid); |
c906108c | 4065 | |
77b06cd7 TJB |
4066 | fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d) = %d\n", |
4067 | pid, retval); | |
4068 | ||
4069 | return retval; | |
c906108c SS |
4070 | } |
4071 | ||
4072 | static int | |
e98cf0cd | 4073 | debug_to_remove_vfork_catchpoint (struct target_ops *self, int pid) |
c906108c | 4074 | { |
c5aa993b | 4075 | int retval; |
c906108c | 4076 | |
e98cf0cd | 4077 | retval = debug_target.to_remove_vfork_catchpoint (&debug_target, pid); |
c906108c | 4078 | |
96baa820 | 4079 | fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n", |
c5aa993b | 4080 | pid, retval); |
c906108c SS |
4081 | |
4082 | return retval; | |
4083 | } | |
4084 | ||
77b06cd7 | 4085 | static int |
ba025e51 | 4086 | debug_to_insert_exec_catchpoint (struct target_ops *self, int pid) |
c906108c | 4087 | { |
77b06cd7 TJB |
4088 | int retval; |
4089 | ||
ba025e51 | 4090 | retval = debug_target.to_insert_exec_catchpoint (&debug_target, pid); |
c906108c | 4091 | |
77b06cd7 TJB |
4092 | fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d) = %d\n", |
4093 | pid, retval); | |
4094 | ||
4095 | return retval; | |
c906108c SS |
4096 | } |
4097 | ||
4098 | static int | |
758e29d2 | 4099 | debug_to_remove_exec_catchpoint (struct target_ops *self, int pid) |
c906108c | 4100 | { |
c5aa993b | 4101 | int retval; |
c906108c | 4102 | |
758e29d2 | 4103 | retval = debug_target.to_remove_exec_catchpoint (&debug_target, pid); |
c906108c | 4104 | |
96baa820 | 4105 | fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n", |
c5aa993b | 4106 | pid, retval); |
c906108c SS |
4107 | |
4108 | return retval; | |
4109 | } | |
4110 | ||
c906108c | 4111 | static int |
d796e1d6 TT |
4112 | debug_to_has_exited (struct target_ops *self, |
4113 | int pid, int wait_status, int *exit_status) | |
c906108c | 4114 | { |
c5aa993b | 4115 | int has_exited; |
c906108c | 4116 | |
d796e1d6 TT |
4117 | has_exited = debug_target.to_has_exited (&debug_target, |
4118 | pid, wait_status, exit_status); | |
c906108c | 4119 | |
96baa820 | 4120 | fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n", |
c5aa993b | 4121 | pid, wait_status, *exit_status, has_exited); |
c906108c SS |
4122 | |
4123 | return has_exited; | |
4124 | } | |
4125 | ||
c906108c | 4126 | static int |
da82bd6b | 4127 | debug_to_can_run (struct target_ops *self) |
c906108c SS |
4128 | { |
4129 | int retval; | |
4130 | ||
da82bd6b | 4131 | retval = debug_target.to_can_run (&debug_target); |
c906108c | 4132 | |
96baa820 | 4133 | fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval); |
c906108c SS |
4134 | |
4135 | return retval; | |
4136 | } | |
4137 | ||
c2250ad1 UW |
4138 | static struct gdbarch * |
4139 | debug_to_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
4140 | { | |
4141 | struct gdbarch *retval; | |
4142 | ||
4143 | retval = debug_target.to_thread_architecture (ops, ptid); | |
4144 | ||
3e43a32a MS |
4145 | fprintf_unfiltered (gdb_stdlog, |
4146 | "target_thread_architecture (%s) = %s [%s]\n", | |
4147 | target_pid_to_str (ptid), | |
4148 | host_address_to_string (retval), | |
c2250ad1 UW |
4149 | gdbarch_bfd_arch_info (retval)->printable_name); |
4150 | return retval; | |
4151 | } | |
4152 | ||
c906108c | 4153 | static void |
1eab8a48 | 4154 | debug_to_stop (struct target_ops *self, ptid_t ptid) |
c906108c | 4155 | { |
1eab8a48 | 4156 | debug_target.to_stop (&debug_target, ptid); |
c906108c | 4157 | |
94cc34af PA |
4158 | fprintf_unfiltered (gdb_stdlog, "target_stop (%s)\n", |
4159 | target_pid_to_str (ptid)); | |
c906108c SS |
4160 | } |
4161 | ||
96baa820 | 4162 | static void |
1aac633b | 4163 | debug_to_rcmd (struct target_ops *self, char *command, |
d9fcf2fb | 4164 | struct ui_file *outbuf) |
96baa820 | 4165 | { |
1aac633b | 4166 | debug_target.to_rcmd (&debug_target, command, outbuf); |
96baa820 JM |
4167 | fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command); |
4168 | } | |
4169 | ||
c906108c | 4170 | static char * |
8dd27370 | 4171 | debug_to_pid_to_exec_file (struct target_ops *self, int pid) |
c906108c | 4172 | { |
c5aa993b | 4173 | char *exec_file; |
c906108c | 4174 | |
8dd27370 | 4175 | exec_file = debug_target.to_pid_to_exec_file (&debug_target, pid); |
c906108c | 4176 | |
96baa820 | 4177 | fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n", |
c5aa993b | 4178 | pid, exec_file); |
c906108c SS |
4179 | |
4180 | return exec_file; | |
4181 | } | |
4182 | ||
c906108c | 4183 | static void |
fba45db2 | 4184 | setup_target_debug (void) |
c906108c SS |
4185 | { |
4186 | memcpy (&debug_target, ¤t_target, sizeof debug_target); | |
4187 | ||
4188 | current_target.to_open = debug_to_open; | |
c906108c | 4189 | current_target.to_post_attach = debug_to_post_attach; |
c906108c | 4190 | current_target.to_prepare_to_store = debug_to_prepare_to_store; |
c906108c SS |
4191 | current_target.to_files_info = debug_to_files_info; |
4192 | current_target.to_insert_breakpoint = debug_to_insert_breakpoint; | |
4193 | current_target.to_remove_breakpoint = debug_to_remove_breakpoint; | |
ccaa32c7 GS |
4194 | current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint; |
4195 | current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint; | |
4196 | current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint; | |
4197 | current_target.to_insert_watchpoint = debug_to_insert_watchpoint; | |
4198 | current_target.to_remove_watchpoint = debug_to_remove_watchpoint; | |
4199 | current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint; | |
4200 | current_target.to_stopped_data_address = debug_to_stopped_data_address; | |
3e43a32a MS |
4201 | current_target.to_watchpoint_addr_within_range |
4202 | = debug_to_watchpoint_addr_within_range; | |
4203 | current_target.to_region_ok_for_hw_watchpoint | |
4204 | = debug_to_region_ok_for_hw_watchpoint; | |
4205 | current_target.to_can_accel_watchpoint_condition | |
4206 | = debug_to_can_accel_watchpoint_condition; | |
c906108c SS |
4207 | current_target.to_terminal_init = debug_to_terminal_init; |
4208 | current_target.to_terminal_inferior = debug_to_terminal_inferior; | |
3e43a32a MS |
4209 | current_target.to_terminal_ours_for_output |
4210 | = debug_to_terminal_ours_for_output; | |
c906108c | 4211 | current_target.to_terminal_ours = debug_to_terminal_ours; |
a790ad35 | 4212 | current_target.to_terminal_save_ours = debug_to_terminal_save_ours; |
c906108c | 4213 | current_target.to_terminal_info = debug_to_terminal_info; |
c906108c | 4214 | current_target.to_load = debug_to_load; |
c906108c | 4215 | current_target.to_post_startup_inferior = debug_to_post_startup_inferior; |
c906108c SS |
4216 | current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint; |
4217 | current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint; | |
4218 | current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint; | |
4219 | current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint; | |
c906108c SS |
4220 | current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint; |
4221 | current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint; | |
c906108c | 4222 | current_target.to_has_exited = debug_to_has_exited; |
c906108c | 4223 | current_target.to_can_run = debug_to_can_run; |
c906108c | 4224 | current_target.to_stop = debug_to_stop; |
96baa820 | 4225 | current_target.to_rcmd = debug_to_rcmd; |
c906108c | 4226 | current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file; |
c2250ad1 | 4227 | current_target.to_thread_architecture = debug_to_thread_architecture; |
c906108c | 4228 | } |
c906108c | 4229 | \f |
c5aa993b JM |
4230 | |
4231 | static char targ_desc[] = | |
3e43a32a MS |
4232 | "Names of targets and files being debugged.\nShows the entire \ |
4233 | stack of targets currently in use (including the exec-file,\n\ | |
c906108c SS |
4234 | core-file, and process, if any), as well as the symbol file name."; |
4235 | ||
a53f3625 TT |
4236 | static void |
4237 | default_rcmd (struct target_ops *self, char *command, struct ui_file *output) | |
4238 | { | |
4239 | error (_("\"monitor\" command not supported by this target.")); | |
4240 | } | |
4241 | ||
96baa820 JM |
4242 | static void |
4243 | do_monitor_command (char *cmd, | |
4244 | int from_tty) | |
4245 | { | |
96baa820 JM |
4246 | target_rcmd (cmd, gdb_stdtarg); |
4247 | } | |
4248 | ||
87680a14 JB |
4249 | /* Print the name of each layers of our target stack. */ |
4250 | ||
4251 | static void | |
4252 | maintenance_print_target_stack (char *cmd, int from_tty) | |
4253 | { | |
4254 | struct target_ops *t; | |
4255 | ||
4256 | printf_filtered (_("The current target stack is:\n")); | |
4257 | ||
4258 | for (t = target_stack; t != NULL; t = t->beneath) | |
4259 | { | |
4260 | printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname); | |
4261 | } | |
4262 | } | |
4263 | ||
c6ebd6cf VP |
4264 | /* Controls if async mode is permitted. */ |
4265 | int target_async_permitted = 0; | |
4266 | ||
4267 | /* The set command writes to this variable. If the inferior is | |
b5419e49 | 4268 | executing, target_async_permitted is *not* updated. */ |
c6ebd6cf VP |
4269 | static int target_async_permitted_1 = 0; |
4270 | ||
4271 | static void | |
9401a810 PA |
4272 | set_target_async_command (char *args, int from_tty, |
4273 | struct cmd_list_element *c) | |
c6ebd6cf | 4274 | { |
c35b1492 | 4275 | if (have_live_inferiors ()) |
c6ebd6cf VP |
4276 | { |
4277 | target_async_permitted_1 = target_async_permitted; | |
4278 | error (_("Cannot change this setting while the inferior is running.")); | |
4279 | } | |
4280 | ||
4281 | target_async_permitted = target_async_permitted_1; | |
4282 | } | |
4283 | ||
4284 | static void | |
9401a810 PA |
4285 | show_target_async_command (struct ui_file *file, int from_tty, |
4286 | struct cmd_list_element *c, | |
4287 | const char *value) | |
c6ebd6cf | 4288 | { |
3e43a32a MS |
4289 | fprintf_filtered (file, |
4290 | _("Controlling the inferior in " | |
4291 | "asynchronous mode is %s.\n"), value); | |
c6ebd6cf VP |
4292 | } |
4293 | ||
d914c394 SS |
4294 | /* Temporary copies of permission settings. */ |
4295 | ||
4296 | static int may_write_registers_1 = 1; | |
4297 | static int may_write_memory_1 = 1; | |
4298 | static int may_insert_breakpoints_1 = 1; | |
4299 | static int may_insert_tracepoints_1 = 1; | |
4300 | static int may_insert_fast_tracepoints_1 = 1; | |
4301 | static int may_stop_1 = 1; | |
4302 | ||
4303 | /* Make the user-set values match the real values again. */ | |
4304 | ||
4305 | void | |
4306 | update_target_permissions (void) | |
4307 | { | |
4308 | may_write_registers_1 = may_write_registers; | |
4309 | may_write_memory_1 = may_write_memory; | |
4310 | may_insert_breakpoints_1 = may_insert_breakpoints; | |
4311 | may_insert_tracepoints_1 = may_insert_tracepoints; | |
4312 | may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints; | |
4313 | may_stop_1 = may_stop; | |
4314 | } | |
4315 | ||
4316 | /* The one function handles (most of) the permission flags in the same | |
4317 | way. */ | |
4318 | ||
4319 | static void | |
4320 | set_target_permissions (char *args, int from_tty, | |
4321 | struct cmd_list_element *c) | |
4322 | { | |
4323 | if (target_has_execution) | |
4324 | { | |
4325 | update_target_permissions (); | |
4326 | error (_("Cannot change this setting while the inferior is running.")); | |
4327 | } | |
4328 | ||
4329 | /* Make the real values match the user-changed values. */ | |
4330 | may_write_registers = may_write_registers_1; | |
4331 | may_insert_breakpoints = may_insert_breakpoints_1; | |
4332 | may_insert_tracepoints = may_insert_tracepoints_1; | |
4333 | may_insert_fast_tracepoints = may_insert_fast_tracepoints_1; | |
4334 | may_stop = may_stop_1; | |
4335 | update_observer_mode (); | |
4336 | } | |
4337 | ||
4338 | /* Set memory write permission independently of observer mode. */ | |
4339 | ||
4340 | static void | |
4341 | set_write_memory_permission (char *args, int from_tty, | |
4342 | struct cmd_list_element *c) | |
4343 | { | |
4344 | /* Make the real values match the user-changed values. */ | |
4345 | may_write_memory = may_write_memory_1; | |
4346 | update_observer_mode (); | |
4347 | } | |
4348 | ||
4349 | ||
c906108c | 4350 | void |
fba45db2 | 4351 | initialize_targets (void) |
c906108c SS |
4352 | { |
4353 | init_dummy_target (); | |
4354 | push_target (&dummy_target); | |
4355 | ||
4356 | add_info ("target", target_info, targ_desc); | |
4357 | add_info ("files", target_info, targ_desc); | |
4358 | ||
ccce17b0 | 4359 | add_setshow_zuinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
85c07804 AC |
4360 | Set target debugging."), _("\ |
4361 | Show target debugging."), _("\ | |
333dabeb DJ |
4362 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
4363 | verbose. Changes do not take effect until the next \"run\" or \"target\"\n\ | |
85c07804 | 4364 | command."), |
ccce17b0 YQ |
4365 | NULL, |
4366 | show_targetdebug, | |
4367 | &setdebuglist, &showdebuglist); | |
3a11626d | 4368 | |
2bc416ba | 4369 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
4370 | &trust_readonly, _("\ |
4371 | Set mode for reading from readonly sections."), _("\ | |
4372 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
4373 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
4374 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 4375 | result in significant performance improvement for remote targets."), |
2c5b56ce | 4376 | NULL, |
920d2a44 | 4377 | show_trust_readonly, |
e707bbc2 | 4378 | &setlist, &showlist); |
96baa820 JM |
4379 | |
4380 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 4381 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 4382 | |
87680a14 JB |
4383 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
4384 | _("Print the name of each layer of the internal target stack."), | |
4385 | &maintenanceprintlist); | |
4386 | ||
c6ebd6cf VP |
4387 | add_setshow_boolean_cmd ("target-async", no_class, |
4388 | &target_async_permitted_1, _("\ | |
4389 | Set whether gdb controls the inferior in asynchronous mode."), _("\ | |
4390 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
4391 | Tells gdb whether to control the inferior in asynchronous mode."), | |
9401a810 PA |
4392 | set_target_async_command, |
4393 | show_target_async_command, | |
c6ebd6cf VP |
4394 | &setlist, |
4395 | &showlist); | |
4396 | ||
d914c394 SS |
4397 | add_setshow_boolean_cmd ("may-write-registers", class_support, |
4398 | &may_write_registers_1, _("\ | |
4399 | Set permission to write into registers."), _("\ | |
4400 | Show permission to write into registers."), _("\ | |
4401 | When this permission is on, GDB may write into the target's registers.\n\ | |
4402 | Otherwise, any sort of write attempt will result in an error."), | |
4403 | set_target_permissions, NULL, | |
4404 | &setlist, &showlist); | |
4405 | ||
4406 | add_setshow_boolean_cmd ("may-write-memory", class_support, | |
4407 | &may_write_memory_1, _("\ | |
4408 | Set permission to write into target memory."), _("\ | |
4409 | Show permission to write into target memory."), _("\ | |
4410 | When this permission is on, GDB may write into the target's memory.\n\ | |
4411 | Otherwise, any sort of write attempt will result in an error."), | |
4412 | set_write_memory_permission, NULL, | |
4413 | &setlist, &showlist); | |
4414 | ||
4415 | add_setshow_boolean_cmd ("may-insert-breakpoints", class_support, | |
4416 | &may_insert_breakpoints_1, _("\ | |
4417 | Set permission to insert breakpoints in the target."), _("\ | |
4418 | Show permission to insert breakpoints in the target."), _("\ | |
4419 | When this permission is on, GDB may insert breakpoints in the program.\n\ | |
4420 | Otherwise, any sort of insertion attempt will result in an error."), | |
4421 | set_target_permissions, NULL, | |
4422 | &setlist, &showlist); | |
4423 | ||
4424 | add_setshow_boolean_cmd ("may-insert-tracepoints", class_support, | |
4425 | &may_insert_tracepoints_1, _("\ | |
4426 | Set permission to insert tracepoints in the target."), _("\ | |
4427 | Show permission to insert tracepoints in the target."), _("\ | |
4428 | When this permission is on, GDB may insert tracepoints in the program.\n\ | |
4429 | Otherwise, any sort of insertion attempt will result in an error."), | |
4430 | set_target_permissions, NULL, | |
4431 | &setlist, &showlist); | |
4432 | ||
4433 | add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support, | |
4434 | &may_insert_fast_tracepoints_1, _("\ | |
4435 | Set permission to insert fast tracepoints in the target."), _("\ | |
4436 | Show permission to insert fast tracepoints in the target."), _("\ | |
4437 | When this permission is on, GDB may insert fast tracepoints.\n\ | |
4438 | Otherwise, any sort of insertion attempt will result in an error."), | |
4439 | set_target_permissions, NULL, | |
4440 | &setlist, &showlist); | |
4441 | ||
4442 | add_setshow_boolean_cmd ("may-interrupt", class_support, | |
4443 | &may_stop_1, _("\ | |
4444 | Set permission to interrupt or signal the target."), _("\ | |
4445 | Show permission to interrupt or signal the target."), _("\ | |
4446 | When this permission is on, GDB may interrupt/stop the target's execution.\n\ | |
4447 | Otherwise, any attempt to interrupt or stop will be ignored."), | |
4448 | set_target_permissions, NULL, | |
4449 | &setlist, &showlist); | |
c906108c | 4450 | } |