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c906108c | 1 | /* Select target systems and architectures at runtime for GDB. |
7998dfc3 | 2 | |
28e7fd62 | 3 | Copyright (C) 1990-2013 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> | |
c906108c SS |
24 | #include "gdb_string.h" |
25 | #include "target.h" | |
26 | #include "gdbcmd.h" | |
27 | #include "symtab.h" | |
28 | #include "inferior.h" | |
29 | #include "bfd.h" | |
30 | #include "symfile.h" | |
31 | #include "objfiles.h" | |
4930751a | 32 | #include "dcache.h" |
c906108c | 33 | #include <signal.h> |
4e052eda | 34 | #include "regcache.h" |
0088c768 | 35 | #include "gdb_assert.h" |
b6591e8b | 36 | #include "gdbcore.h" |
9e35dae4 | 37 | #include "exceptions.h" |
424163ea | 38 | #include "target-descriptions.h" |
e1ac3328 | 39 | #include "gdbthread.h" |
b9db4ced | 40 | #include "solib.h" |
07b82ea5 | 41 | #include "exec.h" |
edb3359d | 42 | #include "inline-frame.h" |
2f4d8875 | 43 | #include "tracepoint.h" |
7313baad | 44 | #include "gdb/fileio.h" |
8ffcbaaf | 45 | #include "agent.h" |
c906108c | 46 | |
a14ed312 | 47 | static void target_info (char *, int); |
c906108c | 48 | |
a14ed312 | 49 | static void default_terminal_info (char *, int); |
c906108c | 50 | |
5009afc5 AS |
51 | static int default_watchpoint_addr_within_range (struct target_ops *, |
52 | CORE_ADDR, CORE_ADDR, int); | |
53 | ||
e0d24f8d WZ |
54 | static int default_region_ok_for_hw_watchpoint (CORE_ADDR, int); |
55 | ||
c25c4a8b | 56 | static void tcomplain (void) ATTRIBUTE_NORETURN; |
c906108c | 57 | |
a14ed312 | 58 | static int nomemory (CORE_ADDR, char *, int, int, struct target_ops *); |
c906108c | 59 | |
a14ed312 | 60 | static int return_zero (void); |
c906108c | 61 | |
a14ed312 | 62 | static int return_one (void); |
c906108c | 63 | |
ccaa32c7 GS |
64 | static int return_minus_one (void); |
65 | ||
a14ed312 | 66 | void target_ignore (void); |
c906108c | 67 | |
a14ed312 | 68 | static void target_command (char *, int); |
c906108c | 69 | |
a14ed312 | 70 | static struct target_ops *find_default_run_target (char *); |
c906108c | 71 | |
4b8a223f | 72 | static LONGEST default_xfer_partial (struct target_ops *ops, |
0088c768 | 73 | enum target_object object, |
1b0ba102 AC |
74 | const char *annex, gdb_byte *readbuf, |
75 | const gdb_byte *writebuf, | |
8aa91c1e | 76 | ULONGEST offset, LONGEST len); |
0088c768 | 77 | |
cf7a04e8 DJ |
78 | static LONGEST current_xfer_partial (struct target_ops *ops, |
79 | enum target_object object, | |
80 | const char *annex, gdb_byte *readbuf, | |
81 | const gdb_byte *writebuf, | |
82 | ULONGEST offset, LONGEST len); | |
c906108c | 83 | |
cf7a04e8 DJ |
84 | static LONGEST target_xfer_partial (struct target_ops *ops, |
85 | enum target_object object, | |
86 | const char *annex, | |
87 | void *readbuf, const void *writebuf, | |
88 | ULONGEST offset, LONGEST len); | |
c906108c | 89 | |
c2250ad1 UW |
90 | static struct gdbarch *default_thread_architecture (struct target_ops *ops, |
91 | ptid_t ptid); | |
92 | ||
a14ed312 | 93 | static void init_dummy_target (void); |
c906108c | 94 | |
aa869812 AC |
95 | static struct target_ops debug_target; |
96 | ||
a14ed312 | 97 | static void debug_to_open (char *, int); |
c906108c | 98 | |
316f2060 | 99 | static void debug_to_prepare_to_store (struct regcache *); |
c906108c | 100 | |
a14ed312 | 101 | static void debug_to_files_info (struct target_ops *); |
c906108c | 102 | |
a6d9a66e UW |
103 | static int debug_to_insert_breakpoint (struct gdbarch *, |
104 | struct bp_target_info *); | |
c906108c | 105 | |
a6d9a66e UW |
106 | static int debug_to_remove_breakpoint (struct gdbarch *, |
107 | struct bp_target_info *); | |
c906108c | 108 | |
ccaa32c7 GS |
109 | static int debug_to_can_use_hw_breakpoint (int, int, int); |
110 | ||
a6d9a66e UW |
111 | static int debug_to_insert_hw_breakpoint (struct gdbarch *, |
112 | struct bp_target_info *); | |
ccaa32c7 | 113 | |
a6d9a66e UW |
114 | static int debug_to_remove_hw_breakpoint (struct gdbarch *, |
115 | struct bp_target_info *); | |
ccaa32c7 | 116 | |
0cf6dd15 TJB |
117 | static int debug_to_insert_watchpoint (CORE_ADDR, int, int, |
118 | struct expression *); | |
ccaa32c7 | 119 | |
0cf6dd15 TJB |
120 | static int debug_to_remove_watchpoint (CORE_ADDR, int, int, |
121 | struct expression *); | |
ccaa32c7 GS |
122 | |
123 | static int debug_to_stopped_by_watchpoint (void); | |
124 | ||
4aa7a7f5 | 125 | static int debug_to_stopped_data_address (struct target_ops *, CORE_ADDR *); |
ccaa32c7 | 126 | |
5009afc5 AS |
127 | static int debug_to_watchpoint_addr_within_range (struct target_ops *, |
128 | CORE_ADDR, CORE_ADDR, int); | |
129 | ||
e0d24f8d WZ |
130 | static int debug_to_region_ok_for_hw_watchpoint (CORE_ADDR, int); |
131 | ||
0cf6dd15 TJB |
132 | static int debug_to_can_accel_watchpoint_condition (CORE_ADDR, int, int, |
133 | struct expression *); | |
134 | ||
a14ed312 | 135 | static void debug_to_terminal_init (void); |
c906108c | 136 | |
a14ed312 | 137 | static void debug_to_terminal_inferior (void); |
c906108c | 138 | |
a14ed312 | 139 | static void debug_to_terminal_ours_for_output (void); |
c906108c | 140 | |
a790ad35 SC |
141 | static void debug_to_terminal_save_ours (void); |
142 | ||
a14ed312 | 143 | static void debug_to_terminal_ours (void); |
c906108c | 144 | |
a14ed312 | 145 | static void debug_to_terminal_info (char *, int); |
c906108c | 146 | |
a14ed312 | 147 | static void debug_to_load (char *, int); |
c906108c | 148 | |
a14ed312 | 149 | static int debug_to_can_run (void); |
c906108c | 150 | |
94cc34af | 151 | static void debug_to_stop (ptid_t); |
c906108c | 152 | |
c906108c | 153 | /* Pointer to array of target architecture structures; the size of the |
2bc416ba | 154 | array; the current index into the array; the allocated size of the |
c906108c SS |
155 | array. */ |
156 | struct target_ops **target_structs; | |
157 | unsigned target_struct_size; | |
158 | unsigned target_struct_index; | |
159 | unsigned target_struct_allocsize; | |
160 | #define DEFAULT_ALLOCSIZE 10 | |
161 | ||
162 | /* The initial current target, so that there is always a semi-valid | |
163 | current target. */ | |
164 | ||
165 | static struct target_ops dummy_target; | |
166 | ||
167 | /* Top of target stack. */ | |
168 | ||
258b763a | 169 | static struct target_ops *target_stack; |
c906108c SS |
170 | |
171 | /* The target structure we are currently using to talk to a process | |
172 | or file or whatever "inferior" we have. */ | |
173 | ||
174 | struct target_ops current_target; | |
175 | ||
176 | /* Command list for target. */ | |
177 | ||
178 | static struct cmd_list_element *targetlist = NULL; | |
179 | ||
cf7a04e8 DJ |
180 | /* Nonzero if we should trust readonly sections from the |
181 | executable when reading memory. */ | |
182 | ||
183 | static int trust_readonly = 0; | |
184 | ||
8defab1a DJ |
185 | /* Nonzero if we should show true memory content including |
186 | memory breakpoint inserted by gdb. */ | |
187 | ||
188 | static int show_memory_breakpoints = 0; | |
189 | ||
d914c394 SS |
190 | /* These globals control whether GDB attempts to perform these |
191 | operations; they are useful for targets that need to prevent | |
192 | inadvertant disruption, such as in non-stop mode. */ | |
193 | ||
194 | int may_write_registers = 1; | |
195 | ||
196 | int may_write_memory = 1; | |
197 | ||
198 | int may_insert_breakpoints = 1; | |
199 | ||
200 | int may_insert_tracepoints = 1; | |
201 | ||
202 | int may_insert_fast_tracepoints = 1; | |
203 | ||
204 | int may_stop = 1; | |
205 | ||
c906108c SS |
206 | /* Non-zero if we want to see trace of target level stuff. */ |
207 | ||
ccce17b0 | 208 | static unsigned int targetdebug = 0; |
920d2a44 AC |
209 | static void |
210 | show_targetdebug (struct ui_file *file, int from_tty, | |
211 | struct cmd_list_element *c, const char *value) | |
212 | { | |
213 | fprintf_filtered (file, _("Target debugging is %s.\n"), value); | |
214 | } | |
c906108c | 215 | |
a14ed312 | 216 | static void setup_target_debug (void); |
c906108c | 217 | |
4e5d721f DE |
218 | /* The option sets this. */ |
219 | static int stack_cache_enabled_p_1 = 1; | |
220 | /* And set_stack_cache_enabled_p updates this. | |
221 | The reason for the separation is so that we don't flush the cache for | |
222 | on->on transitions. */ | |
223 | static int stack_cache_enabled_p = 1; | |
224 | ||
225 | /* This is called *after* the stack-cache has been set. | |
226 | Flush the cache for off->on and on->off transitions. | |
227 | There's no real need to flush the cache for on->off transitions, | |
228 | except cleanliness. */ | |
229 | ||
230 | static void | |
231 | set_stack_cache_enabled_p (char *args, int from_tty, | |
232 | struct cmd_list_element *c) | |
233 | { | |
234 | if (stack_cache_enabled_p != stack_cache_enabled_p_1) | |
235 | target_dcache_invalidate (); | |
236 | ||
237 | stack_cache_enabled_p = stack_cache_enabled_p_1; | |
238 | } | |
239 | ||
240 | static void | |
241 | show_stack_cache_enabled_p (struct ui_file *file, int from_tty, | |
242 | struct cmd_list_element *c, const char *value) | |
243 | { | |
244 | fprintf_filtered (file, _("Cache use for stack accesses is %s.\n"), value); | |
245 | } | |
246 | ||
247 | /* Cache of memory operations, to speed up remote access. */ | |
248 | static DCACHE *target_dcache; | |
249 | ||
250 | /* Invalidate the target dcache. */ | |
251 | ||
252 | void | |
253 | target_dcache_invalidate (void) | |
254 | { | |
255 | dcache_invalidate (target_dcache); | |
256 | } | |
4930751a | 257 | |
c906108c SS |
258 | /* The user just typed 'target' without the name of a target. */ |
259 | ||
c906108c | 260 | static void |
fba45db2 | 261 | target_command (char *arg, int from_tty) |
c906108c SS |
262 | { |
263 | fputs_filtered ("Argument required (target name). Try `help target'\n", | |
264 | gdb_stdout); | |
265 | } | |
266 | ||
c35b1492 PA |
267 | /* Default target_has_* methods for process_stratum targets. */ |
268 | ||
269 | int | |
270 | default_child_has_all_memory (struct target_ops *ops) | |
271 | { | |
272 | /* If no inferior selected, then we can't read memory here. */ | |
273 | if (ptid_equal (inferior_ptid, null_ptid)) | |
274 | return 0; | |
275 | ||
276 | return 1; | |
277 | } | |
278 | ||
279 | int | |
280 | default_child_has_memory (struct target_ops *ops) | |
281 | { | |
282 | /* If no inferior selected, then we can't read memory here. */ | |
283 | if (ptid_equal (inferior_ptid, null_ptid)) | |
284 | return 0; | |
285 | ||
286 | return 1; | |
287 | } | |
288 | ||
289 | int | |
290 | default_child_has_stack (struct target_ops *ops) | |
291 | { | |
292 | /* If no inferior selected, there's no stack. */ | |
293 | if (ptid_equal (inferior_ptid, null_ptid)) | |
294 | return 0; | |
295 | ||
296 | return 1; | |
297 | } | |
298 | ||
299 | int | |
300 | default_child_has_registers (struct target_ops *ops) | |
301 | { | |
302 | /* Can't read registers from no inferior. */ | |
303 | if (ptid_equal (inferior_ptid, null_ptid)) | |
304 | return 0; | |
305 | ||
306 | return 1; | |
307 | } | |
308 | ||
309 | int | |
aeaec162 | 310 | default_child_has_execution (struct target_ops *ops, ptid_t the_ptid) |
c35b1492 PA |
311 | { |
312 | /* If there's no thread selected, then we can't make it run through | |
313 | hoops. */ | |
aeaec162 | 314 | if (ptid_equal (the_ptid, null_ptid)) |
c35b1492 PA |
315 | return 0; |
316 | ||
317 | return 1; | |
318 | } | |
319 | ||
320 | ||
321 | int | |
322 | target_has_all_memory_1 (void) | |
323 | { | |
324 | struct target_ops *t; | |
325 | ||
326 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
327 | if (t->to_has_all_memory (t)) | |
328 | return 1; | |
329 | ||
330 | return 0; | |
331 | } | |
332 | ||
333 | int | |
334 | target_has_memory_1 (void) | |
335 | { | |
336 | struct target_ops *t; | |
337 | ||
338 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
339 | if (t->to_has_memory (t)) | |
340 | return 1; | |
341 | ||
342 | return 0; | |
343 | } | |
344 | ||
345 | int | |
346 | target_has_stack_1 (void) | |
347 | { | |
348 | struct target_ops *t; | |
349 | ||
350 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
351 | if (t->to_has_stack (t)) | |
352 | return 1; | |
353 | ||
354 | return 0; | |
355 | } | |
356 | ||
357 | int | |
358 | target_has_registers_1 (void) | |
359 | { | |
360 | struct target_ops *t; | |
361 | ||
362 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
363 | if (t->to_has_registers (t)) | |
364 | return 1; | |
365 | ||
366 | return 0; | |
367 | } | |
368 | ||
369 | int | |
aeaec162 | 370 | target_has_execution_1 (ptid_t the_ptid) |
c35b1492 PA |
371 | { |
372 | struct target_ops *t; | |
373 | ||
374 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
aeaec162 | 375 | if (t->to_has_execution (t, the_ptid)) |
c35b1492 PA |
376 | return 1; |
377 | ||
378 | return 0; | |
379 | } | |
380 | ||
aeaec162 TT |
381 | int |
382 | target_has_execution_current (void) | |
383 | { | |
384 | return target_has_execution_1 (inferior_ptid); | |
385 | } | |
386 | ||
c906108c SS |
387 | /* Add a possible target architecture to the list. */ |
388 | ||
389 | void | |
fba45db2 | 390 | add_target (struct target_ops *t) |
c906108c | 391 | { |
0088c768 | 392 | /* Provide default values for all "must have" methods. */ |
0b603eba AC |
393 | if (t->to_xfer_partial == NULL) |
394 | t->to_xfer_partial = default_xfer_partial; | |
0088c768 | 395 | |
c35b1492 PA |
396 | if (t->to_has_all_memory == NULL) |
397 | t->to_has_all_memory = (int (*) (struct target_ops *)) return_zero; | |
398 | ||
399 | if (t->to_has_memory == NULL) | |
400 | t->to_has_memory = (int (*) (struct target_ops *)) return_zero; | |
401 | ||
402 | if (t->to_has_stack == NULL) | |
403 | t->to_has_stack = (int (*) (struct target_ops *)) return_zero; | |
404 | ||
405 | if (t->to_has_registers == NULL) | |
406 | t->to_has_registers = (int (*) (struct target_ops *)) return_zero; | |
407 | ||
408 | if (t->to_has_execution == NULL) | |
aeaec162 | 409 | t->to_has_execution = (int (*) (struct target_ops *, ptid_t)) return_zero; |
c35b1492 | 410 | |
c906108c SS |
411 | if (!target_structs) |
412 | { | |
413 | target_struct_allocsize = DEFAULT_ALLOCSIZE; | |
414 | target_structs = (struct target_ops **) xmalloc | |
415 | (target_struct_allocsize * sizeof (*target_structs)); | |
416 | } | |
417 | if (target_struct_size >= target_struct_allocsize) | |
418 | { | |
419 | target_struct_allocsize *= 2; | |
420 | target_structs = (struct target_ops **) | |
c5aa993b JM |
421 | xrealloc ((char *) target_structs, |
422 | target_struct_allocsize * sizeof (*target_structs)); | |
c906108c SS |
423 | } |
424 | target_structs[target_struct_size++] = t; | |
c906108c SS |
425 | |
426 | if (targetlist == NULL) | |
1bedd215 AC |
427 | add_prefix_cmd ("target", class_run, target_command, _("\ |
428 | Connect to a target machine or process.\n\ | |
c906108c SS |
429 | The first argument is the type or protocol of the target machine.\n\ |
430 | Remaining arguments are interpreted by the target protocol. For more\n\ | |
431 | information on the arguments for a particular protocol, type\n\ | |
1bedd215 | 432 | `help target ' followed by the protocol name."), |
c906108c SS |
433 | &targetlist, "target ", 0, &cmdlist); |
434 | add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc, &targetlist); | |
435 | } | |
436 | ||
b48d48eb MM |
437 | /* See target.h. */ |
438 | ||
439 | void | |
440 | add_deprecated_target_alias (struct target_ops *t, char *alias) | |
441 | { | |
442 | struct cmd_list_element *c; | |
443 | char *alt; | |
444 | ||
445 | /* If we use add_alias_cmd, here, we do not get the deprecated warning, | |
446 | see PR cli/15104. */ | |
447 | c = add_cmd (alias, no_class, t->to_open, t->to_doc, &targetlist); | |
448 | alt = xstrprintf ("target %s", t->to_shortname); | |
449 | deprecate_cmd (c, alt); | |
450 | } | |
451 | ||
c906108c SS |
452 | /* Stub functions */ |
453 | ||
454 | void | |
fba45db2 | 455 | target_ignore (void) |
c906108c SS |
456 | { |
457 | } | |
458 | ||
7d85a9c0 JB |
459 | void |
460 | target_kill (void) | |
461 | { | |
462 | struct target_ops *t; | |
463 | ||
464 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
465 | if (t->to_kill != NULL) | |
466 | { | |
467 | if (targetdebug) | |
468 | fprintf_unfiltered (gdb_stdlog, "target_kill ()\n"); | |
469 | ||
470 | t->to_kill (t); | |
471 | return; | |
472 | } | |
473 | ||
474 | noprocess (); | |
475 | } | |
476 | ||
11cf8741 JM |
477 | void |
478 | target_load (char *arg, int from_tty) | |
479 | { | |
4e5d721f | 480 | target_dcache_invalidate (); |
11cf8741 JM |
481 | (*current_target.to_load) (arg, from_tty); |
482 | } | |
483 | ||
947b8855 PA |
484 | void |
485 | target_create_inferior (char *exec_file, char *args, | |
486 | char **env, int from_tty) | |
136d6dae VP |
487 | { |
488 | struct target_ops *t; | |
5d502164 | 489 | |
136d6dae VP |
490 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
491 | { | |
492 | if (t->to_create_inferior != NULL) | |
493 | { | |
494 | t->to_create_inferior (t, exec_file, args, env, from_tty); | |
947b8855 PA |
495 | if (targetdebug) |
496 | fprintf_unfiltered (gdb_stdlog, | |
497 | "target_create_inferior (%s, %s, xxx, %d)\n", | |
498 | exec_file, args, from_tty); | |
136d6dae VP |
499 | return; |
500 | } | |
501 | } | |
502 | ||
503 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 504 | _("could not find a target to create inferior")); |
136d6dae VP |
505 | } |
506 | ||
d9d2d8b6 PA |
507 | void |
508 | target_terminal_inferior (void) | |
509 | { | |
510 | /* A background resume (``run&'') should leave GDB in control of the | |
c378eb4e | 511 | terminal. Use target_can_async_p, not target_is_async_p, since at |
ba7f6c64 VP |
512 | this point the target is not async yet. However, if sync_execution |
513 | is not set, we know it will become async prior to resume. */ | |
514 | if (target_can_async_p () && !sync_execution) | |
d9d2d8b6 PA |
515 | return; |
516 | ||
517 | /* If GDB is resuming the inferior in the foreground, install | |
518 | inferior's terminal modes. */ | |
519 | (*current_target.to_terminal_inferior) (); | |
520 | } | |
136d6dae | 521 | |
c906108c | 522 | static int |
fba45db2 KB |
523 | nomemory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
524 | struct target_ops *t) | |
c906108c | 525 | { |
c378eb4e MS |
526 | errno = EIO; /* Can't read/write this location. */ |
527 | return 0; /* No bytes handled. */ | |
c906108c SS |
528 | } |
529 | ||
530 | static void | |
fba45db2 | 531 | tcomplain (void) |
c906108c | 532 | { |
8a3fe4f8 | 533 | error (_("You can't do that when your target is `%s'"), |
c906108c SS |
534 | current_target.to_shortname); |
535 | } | |
536 | ||
537 | void | |
fba45db2 | 538 | noprocess (void) |
c906108c | 539 | { |
8a3fe4f8 | 540 | error (_("You can't do that without a process to debug.")); |
c906108c SS |
541 | } |
542 | ||
c906108c | 543 | static void |
fba45db2 | 544 | default_terminal_info (char *args, int from_tty) |
c906108c | 545 | { |
a3f17187 | 546 | printf_unfiltered (_("No saved terminal information.\n")); |
c906108c SS |
547 | } |
548 | ||
0ef643c8 JB |
549 | /* A default implementation for the to_get_ada_task_ptid target method. |
550 | ||
551 | This function builds the PTID by using both LWP and TID as part of | |
552 | the PTID lwp and tid elements. The pid used is the pid of the | |
553 | inferior_ptid. */ | |
554 | ||
2c0b251b | 555 | static ptid_t |
0ef643c8 JB |
556 | default_get_ada_task_ptid (long lwp, long tid) |
557 | { | |
558 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid); | |
559 | } | |
560 | ||
32231432 PA |
561 | static enum exec_direction_kind |
562 | default_execution_direction (void) | |
563 | { | |
564 | if (!target_can_execute_reverse) | |
565 | return EXEC_FORWARD; | |
566 | else if (!target_can_async_p ()) | |
567 | return EXEC_FORWARD; | |
568 | else | |
569 | gdb_assert_not_reached ("\ | |
570 | to_execution_direction must be implemented for reverse async"); | |
571 | } | |
572 | ||
7998dfc3 AC |
573 | /* Go through the target stack from top to bottom, copying over zero |
574 | entries in current_target, then filling in still empty entries. In | |
575 | effect, we are doing class inheritance through the pushed target | |
576 | vectors. | |
577 | ||
578 | NOTE: cagney/2003-10-17: The problem with this inheritance, as it | |
579 | is currently implemented, is that it discards any knowledge of | |
580 | which target an inherited method originally belonged to. | |
581 | Consequently, new new target methods should instead explicitly and | |
582 | locally search the target stack for the target that can handle the | |
583 | request. */ | |
c906108c SS |
584 | |
585 | static void | |
7998dfc3 | 586 | update_current_target (void) |
c906108c | 587 | { |
7998dfc3 AC |
588 | struct target_ops *t; |
589 | ||
08d8bcd7 | 590 | /* First, reset current's contents. */ |
7998dfc3 AC |
591 | memset (¤t_target, 0, sizeof (current_target)); |
592 | ||
593 | #define INHERIT(FIELD, TARGET) \ | |
594 | if (!current_target.FIELD) \ | |
595 | current_target.FIELD = (TARGET)->FIELD | |
596 | ||
597 | for (t = target_stack; t; t = t->beneath) | |
598 | { | |
599 | INHERIT (to_shortname, t); | |
600 | INHERIT (to_longname, t); | |
601 | INHERIT (to_doc, t); | |
b52323fa UW |
602 | /* Do not inherit to_open. */ |
603 | /* Do not inherit to_close. */ | |
136d6dae | 604 | /* Do not inherit to_attach. */ |
7998dfc3 | 605 | INHERIT (to_post_attach, t); |
dc177b7a | 606 | INHERIT (to_attach_no_wait, t); |
136d6dae | 607 | /* Do not inherit to_detach. */ |
597320e7 | 608 | /* Do not inherit to_disconnect. */ |
28439f5e | 609 | /* Do not inherit to_resume. */ |
117de6a9 | 610 | /* Do not inherit to_wait. */ |
28439f5e PA |
611 | /* Do not inherit to_fetch_registers. */ |
612 | /* Do not inherit to_store_registers. */ | |
7998dfc3 | 613 | INHERIT (to_prepare_to_store, t); |
c8e73a31 | 614 | INHERIT (deprecated_xfer_memory, t); |
7998dfc3 AC |
615 | INHERIT (to_files_info, t); |
616 | INHERIT (to_insert_breakpoint, t); | |
617 | INHERIT (to_remove_breakpoint, t); | |
618 | INHERIT (to_can_use_hw_breakpoint, t); | |
619 | INHERIT (to_insert_hw_breakpoint, t); | |
620 | INHERIT (to_remove_hw_breakpoint, t); | |
f1310107 | 621 | /* Do not inherit to_ranged_break_num_registers. */ |
7998dfc3 AC |
622 | INHERIT (to_insert_watchpoint, t); |
623 | INHERIT (to_remove_watchpoint, t); | |
9c06b0b4 TJB |
624 | /* Do not inherit to_insert_mask_watchpoint. */ |
625 | /* Do not inherit to_remove_mask_watchpoint. */ | |
7998dfc3 | 626 | INHERIT (to_stopped_data_address, t); |
74174d2e | 627 | INHERIT (to_have_steppable_watchpoint, t); |
7998dfc3 | 628 | INHERIT (to_have_continuable_watchpoint, t); |
5009afc5 AS |
629 | INHERIT (to_stopped_by_watchpoint, t); |
630 | INHERIT (to_watchpoint_addr_within_range, t); | |
e0d24f8d | 631 | INHERIT (to_region_ok_for_hw_watchpoint, t); |
0cf6dd15 | 632 | INHERIT (to_can_accel_watchpoint_condition, t); |
9c06b0b4 | 633 | /* Do not inherit to_masked_watch_num_registers. */ |
7998dfc3 AC |
634 | INHERIT (to_terminal_init, t); |
635 | INHERIT (to_terminal_inferior, t); | |
636 | INHERIT (to_terminal_ours_for_output, t); | |
637 | INHERIT (to_terminal_ours, t); | |
638 | INHERIT (to_terminal_save_ours, t); | |
639 | INHERIT (to_terminal_info, t); | |
7d85a9c0 | 640 | /* Do not inherit to_kill. */ |
7998dfc3 | 641 | INHERIT (to_load, t); |
136d6dae | 642 | /* Do no inherit to_create_inferior. */ |
7998dfc3 | 643 | INHERIT (to_post_startup_inferior, t); |
7998dfc3 AC |
644 | INHERIT (to_insert_fork_catchpoint, t); |
645 | INHERIT (to_remove_fork_catchpoint, t); | |
646 | INHERIT (to_insert_vfork_catchpoint, t); | |
647 | INHERIT (to_remove_vfork_catchpoint, t); | |
ee057212 | 648 | /* Do not inherit to_follow_fork. */ |
7998dfc3 AC |
649 | INHERIT (to_insert_exec_catchpoint, t); |
650 | INHERIT (to_remove_exec_catchpoint, t); | |
a96d9b2e | 651 | INHERIT (to_set_syscall_catchpoint, t); |
7998dfc3 | 652 | INHERIT (to_has_exited, t); |
82892036 | 653 | /* Do not inherit to_mourn_inferior. */ |
7998dfc3 | 654 | INHERIT (to_can_run, t); |
2455069d | 655 | /* Do not inherit to_pass_signals. */ |
9b224c5e | 656 | /* Do not inherit to_program_signals. */ |
28439f5e PA |
657 | /* Do not inherit to_thread_alive. */ |
658 | /* Do not inherit to_find_new_threads. */ | |
117de6a9 | 659 | /* Do not inherit to_pid_to_str. */ |
7998dfc3 | 660 | INHERIT (to_extra_thread_info, t); |
4694da01 | 661 | INHERIT (to_thread_name, t); |
7998dfc3 | 662 | INHERIT (to_stop, t); |
4b8a223f | 663 | /* Do not inherit to_xfer_partial. */ |
7998dfc3 | 664 | INHERIT (to_rcmd, t); |
7998dfc3 | 665 | INHERIT (to_pid_to_exec_file, t); |
49d03eab | 666 | INHERIT (to_log_command, t); |
7998dfc3 | 667 | INHERIT (to_stratum, t); |
c378eb4e MS |
668 | /* Do not inherit to_has_all_memory. */ |
669 | /* Do not inherit to_has_memory. */ | |
670 | /* Do not inherit to_has_stack. */ | |
671 | /* Do not inherit to_has_registers. */ | |
672 | /* Do not inherit to_has_execution. */ | |
7998dfc3 | 673 | INHERIT (to_has_thread_control, t); |
7998dfc3 AC |
674 | INHERIT (to_can_async_p, t); |
675 | INHERIT (to_is_async_p, t); | |
676 | INHERIT (to_async, t); | |
7998dfc3 AC |
677 | INHERIT (to_find_memory_regions, t); |
678 | INHERIT (to_make_corefile_notes, t); | |
6b04bdb7 MS |
679 | INHERIT (to_get_bookmark, t); |
680 | INHERIT (to_goto_bookmark, t); | |
117de6a9 | 681 | /* Do not inherit to_get_thread_local_address. */ |
b2175913 | 682 | INHERIT (to_can_execute_reverse, t); |
32231432 | 683 | INHERIT (to_execution_direction, t); |
c2250ad1 | 684 | INHERIT (to_thread_architecture, t); |
424163ea | 685 | /* Do not inherit to_read_description. */ |
0ef643c8 | 686 | INHERIT (to_get_ada_task_ptid, t); |
08388c79 | 687 | /* Do not inherit to_search_memory. */ |
8a305172 | 688 | INHERIT (to_supports_multi_process, t); |
d248b706 | 689 | INHERIT (to_supports_enable_disable_tracepoint, t); |
3065dfb6 | 690 | INHERIT (to_supports_string_tracing, t); |
35b1e5cc SS |
691 | INHERIT (to_trace_init, t); |
692 | INHERIT (to_download_tracepoint, t); | |
1e4d1764 | 693 | INHERIT (to_can_download_tracepoint, t); |
35b1e5cc | 694 | INHERIT (to_download_trace_state_variable, t); |
d248b706 KY |
695 | INHERIT (to_enable_tracepoint, t); |
696 | INHERIT (to_disable_tracepoint, t); | |
35b1e5cc SS |
697 | INHERIT (to_trace_set_readonly_regions, t); |
698 | INHERIT (to_trace_start, t); | |
699 | INHERIT (to_get_trace_status, t); | |
f196051f | 700 | INHERIT (to_get_tracepoint_status, t); |
35b1e5cc SS |
701 | INHERIT (to_trace_stop, t); |
702 | INHERIT (to_trace_find, t); | |
703 | INHERIT (to_get_trace_state_variable_value, t); | |
00bf0b85 SS |
704 | INHERIT (to_save_trace_data, t); |
705 | INHERIT (to_upload_tracepoints, t); | |
706 | INHERIT (to_upload_trace_state_variables, t); | |
707 | INHERIT (to_get_raw_trace_data, t); | |
405f8e94 | 708 | INHERIT (to_get_min_fast_tracepoint_insn_len, t); |
35b1e5cc | 709 | INHERIT (to_set_disconnected_tracing, t); |
4daf5ac0 | 710 | INHERIT (to_set_circular_trace_buffer, t); |
f6f899bf | 711 | INHERIT (to_set_trace_buffer_size, t); |
f196051f | 712 | INHERIT (to_set_trace_notes, t); |
711e434b | 713 | INHERIT (to_get_tib_address, t); |
d914c394 | 714 | INHERIT (to_set_permissions, t); |
0fb4aa4b PA |
715 | INHERIT (to_static_tracepoint_marker_at, t); |
716 | INHERIT (to_static_tracepoint_markers_by_strid, t); | |
b3b9301e | 717 | INHERIT (to_traceframe_info, t); |
d1feda86 YQ |
718 | INHERIT (to_use_agent, t); |
719 | INHERIT (to_can_use_agent, t); | |
7998dfc3 | 720 | INHERIT (to_magic, t); |
b775012e | 721 | INHERIT (to_supports_evaluation_of_breakpoint_conditions, t); |
d3ce09f5 | 722 | INHERIT (to_can_run_breakpoint_commands, t); |
fd79ecee | 723 | /* Do not inherit to_memory_map. */ |
a76d924d DJ |
724 | /* Do not inherit to_flash_erase. */ |
725 | /* Do not inherit to_flash_done. */ | |
7998dfc3 AC |
726 | } |
727 | #undef INHERIT | |
728 | ||
729 | /* Clean up a target struct so it no longer has any zero pointers in | |
0088c768 AC |
730 | it. Some entries are defaulted to a method that print an error, |
731 | others are hard-wired to a standard recursive default. */ | |
c906108c SS |
732 | |
733 | #define de_fault(field, value) \ | |
7998dfc3 AC |
734 | if (!current_target.field) \ |
735 | current_target.field = value | |
0d06e24b | 736 | |
2bc416ba DJ |
737 | de_fault (to_open, |
738 | (void (*) (char *, int)) | |
0d06e24b | 739 | tcomplain); |
2bc416ba DJ |
740 | de_fault (to_close, |
741 | (void (*) (int)) | |
0d06e24b | 742 | target_ignore); |
2bc416ba DJ |
743 | de_fault (to_post_attach, |
744 | (void (*) (int)) | |
0d06e24b | 745 | target_ignore); |
2bc416ba | 746 | de_fault (to_prepare_to_store, |
316f2060 | 747 | (void (*) (struct regcache *)) |
0d06e24b | 748 | noprocess); |
2bc416ba | 749 | de_fault (deprecated_xfer_memory, |
3e43a32a MS |
750 | (int (*) (CORE_ADDR, gdb_byte *, int, int, |
751 | struct mem_attrib *, struct target_ops *)) | |
0d06e24b | 752 | nomemory); |
2bc416ba DJ |
753 | de_fault (to_files_info, |
754 | (void (*) (struct target_ops *)) | |
0d06e24b | 755 | target_ignore); |
2bc416ba | 756 | de_fault (to_insert_breakpoint, |
0d06e24b | 757 | memory_insert_breakpoint); |
2bc416ba | 758 | de_fault (to_remove_breakpoint, |
0d06e24b | 759 | memory_remove_breakpoint); |
ccaa32c7 GS |
760 | de_fault (to_can_use_hw_breakpoint, |
761 | (int (*) (int, int, int)) | |
762 | return_zero); | |
763 | de_fault (to_insert_hw_breakpoint, | |
a6d9a66e | 764 | (int (*) (struct gdbarch *, struct bp_target_info *)) |
ccaa32c7 GS |
765 | return_minus_one); |
766 | de_fault (to_remove_hw_breakpoint, | |
a6d9a66e | 767 | (int (*) (struct gdbarch *, struct bp_target_info *)) |
ccaa32c7 GS |
768 | return_minus_one); |
769 | de_fault (to_insert_watchpoint, | |
0cf6dd15 | 770 | (int (*) (CORE_ADDR, int, int, struct expression *)) |
ccaa32c7 GS |
771 | return_minus_one); |
772 | de_fault (to_remove_watchpoint, | |
0cf6dd15 | 773 | (int (*) (CORE_ADDR, int, int, struct expression *)) |
ccaa32c7 GS |
774 | return_minus_one); |
775 | de_fault (to_stopped_by_watchpoint, | |
776 | (int (*) (void)) | |
777 | return_zero); | |
778 | de_fault (to_stopped_data_address, | |
4aa7a7f5 | 779 | (int (*) (struct target_ops *, CORE_ADDR *)) |
ccaa32c7 | 780 | return_zero); |
5009afc5 AS |
781 | de_fault (to_watchpoint_addr_within_range, |
782 | default_watchpoint_addr_within_range); | |
e0d24f8d WZ |
783 | de_fault (to_region_ok_for_hw_watchpoint, |
784 | default_region_ok_for_hw_watchpoint); | |
0cf6dd15 TJB |
785 | de_fault (to_can_accel_watchpoint_condition, |
786 | (int (*) (CORE_ADDR, int, int, struct expression *)) | |
787 | return_zero); | |
2bc416ba DJ |
788 | de_fault (to_terminal_init, |
789 | (void (*) (void)) | |
0d06e24b | 790 | target_ignore); |
2bc416ba DJ |
791 | de_fault (to_terminal_inferior, |
792 | (void (*) (void)) | |
0d06e24b | 793 | target_ignore); |
2bc416ba DJ |
794 | de_fault (to_terminal_ours_for_output, |
795 | (void (*) (void)) | |
0d06e24b | 796 | target_ignore); |
2bc416ba DJ |
797 | de_fault (to_terminal_ours, |
798 | (void (*) (void)) | |
0d06e24b | 799 | target_ignore); |
2bc416ba DJ |
800 | de_fault (to_terminal_save_ours, |
801 | (void (*) (void)) | |
a790ad35 | 802 | target_ignore); |
2bc416ba | 803 | de_fault (to_terminal_info, |
0d06e24b | 804 | default_terminal_info); |
2bc416ba DJ |
805 | de_fault (to_load, |
806 | (void (*) (char *, int)) | |
0d06e24b | 807 | tcomplain); |
2bc416ba DJ |
808 | de_fault (to_post_startup_inferior, |
809 | (void (*) (ptid_t)) | |
0d06e24b | 810 | target_ignore); |
2bc416ba | 811 | de_fault (to_insert_fork_catchpoint, |
77b06cd7 TJB |
812 | (int (*) (int)) |
813 | return_one); | |
2bc416ba DJ |
814 | de_fault (to_remove_fork_catchpoint, |
815 | (int (*) (int)) | |
77b06cd7 | 816 | return_one); |
2bc416ba | 817 | de_fault (to_insert_vfork_catchpoint, |
77b06cd7 TJB |
818 | (int (*) (int)) |
819 | return_one); | |
2bc416ba DJ |
820 | de_fault (to_remove_vfork_catchpoint, |
821 | (int (*) (int)) | |
77b06cd7 | 822 | return_one); |
2bc416ba | 823 | de_fault (to_insert_exec_catchpoint, |
77b06cd7 TJB |
824 | (int (*) (int)) |
825 | return_one); | |
2bc416ba DJ |
826 | de_fault (to_remove_exec_catchpoint, |
827 | (int (*) (int)) | |
77b06cd7 | 828 | return_one); |
a96d9b2e SDJ |
829 | de_fault (to_set_syscall_catchpoint, |
830 | (int (*) (int, int, int, int, int *)) | |
77b06cd7 | 831 | return_one); |
2bc416ba DJ |
832 | de_fault (to_has_exited, |
833 | (int (*) (int, int, int *)) | |
0d06e24b | 834 | return_zero); |
2bc416ba | 835 | de_fault (to_can_run, |
0d06e24b | 836 | return_zero); |
2bc416ba DJ |
837 | de_fault (to_extra_thread_info, |
838 | (char *(*) (struct thread_info *)) | |
0d06e24b | 839 | return_zero); |
4694da01 TT |
840 | de_fault (to_thread_name, |
841 | (char *(*) (struct thread_info *)) | |
842 | return_zero); | |
2bc416ba | 843 | de_fault (to_stop, |
94cc34af | 844 | (void (*) (ptid_t)) |
0d06e24b | 845 | target_ignore); |
cf7a04e8 | 846 | current_target.to_xfer_partial = current_xfer_partial; |
2bc416ba DJ |
847 | de_fault (to_rcmd, |
848 | (void (*) (char *, struct ui_file *)) | |
0d06e24b | 849 | tcomplain); |
2bc416ba DJ |
850 | de_fault (to_pid_to_exec_file, |
851 | (char *(*) (int)) | |
0d06e24b | 852 | return_zero); |
2bc416ba DJ |
853 | de_fault (to_async, |
854 | (void (*) (void (*) (enum inferior_event_type, void*), void*)) | |
0d06e24b | 855 | tcomplain); |
c2250ad1 UW |
856 | de_fault (to_thread_architecture, |
857 | default_thread_architecture); | |
424163ea | 858 | current_target.to_read_description = NULL; |
0ef643c8 JB |
859 | de_fault (to_get_ada_task_ptid, |
860 | (ptid_t (*) (long, long)) | |
861 | default_get_ada_task_ptid); | |
8a305172 PA |
862 | de_fault (to_supports_multi_process, |
863 | (int (*) (void)) | |
864 | return_zero); | |
d248b706 KY |
865 | de_fault (to_supports_enable_disable_tracepoint, |
866 | (int (*) (void)) | |
867 | return_zero); | |
3065dfb6 SS |
868 | de_fault (to_supports_string_tracing, |
869 | (int (*) (void)) | |
870 | return_zero); | |
35b1e5cc SS |
871 | de_fault (to_trace_init, |
872 | (void (*) (void)) | |
873 | tcomplain); | |
874 | de_fault (to_download_tracepoint, | |
e8ba3115 | 875 | (void (*) (struct bp_location *)) |
35b1e5cc | 876 | tcomplain); |
1e4d1764 YQ |
877 | de_fault (to_can_download_tracepoint, |
878 | (int (*) (void)) | |
879 | return_zero); | |
35b1e5cc SS |
880 | de_fault (to_download_trace_state_variable, |
881 | (void (*) (struct trace_state_variable *)) | |
882 | tcomplain); | |
d248b706 KY |
883 | de_fault (to_enable_tracepoint, |
884 | (void (*) (struct bp_location *)) | |
885 | tcomplain); | |
886 | de_fault (to_disable_tracepoint, | |
887 | (void (*) (struct bp_location *)) | |
888 | tcomplain); | |
35b1e5cc SS |
889 | de_fault (to_trace_set_readonly_regions, |
890 | (void (*) (void)) | |
891 | tcomplain); | |
892 | de_fault (to_trace_start, | |
893 | (void (*) (void)) | |
894 | tcomplain); | |
895 | de_fault (to_get_trace_status, | |
00bf0b85 | 896 | (int (*) (struct trace_status *)) |
35b1e5cc | 897 | return_minus_one); |
f196051f SS |
898 | de_fault (to_get_tracepoint_status, |
899 | (void (*) (struct breakpoint *, struct uploaded_tp *)) | |
900 | tcomplain); | |
35b1e5cc SS |
901 | de_fault (to_trace_stop, |
902 | (void (*) (void)) | |
903 | tcomplain); | |
904 | de_fault (to_trace_find, | |
905 | (int (*) (enum trace_find_type, int, ULONGEST, ULONGEST, int *)) | |
4136fdd2 | 906 | return_minus_one); |
35b1e5cc SS |
907 | de_fault (to_get_trace_state_variable_value, |
908 | (int (*) (int, LONGEST *)) | |
909 | return_zero); | |
00bf0b85 | 910 | de_fault (to_save_trace_data, |
011aacb0 | 911 | (int (*) (const char *)) |
00bf0b85 SS |
912 | tcomplain); |
913 | de_fault (to_upload_tracepoints, | |
914 | (int (*) (struct uploaded_tp **)) | |
915 | return_zero); | |
916 | de_fault (to_upload_trace_state_variables, | |
917 | (int (*) (struct uploaded_tsv **)) | |
918 | return_zero); | |
919 | de_fault (to_get_raw_trace_data, | |
920 | (LONGEST (*) (gdb_byte *, ULONGEST, LONGEST)) | |
921 | tcomplain); | |
405f8e94 SS |
922 | de_fault (to_get_min_fast_tracepoint_insn_len, |
923 | (int (*) (void)) | |
924 | return_minus_one); | |
35b1e5cc SS |
925 | de_fault (to_set_disconnected_tracing, |
926 | (void (*) (int)) | |
4daf5ac0 SS |
927 | target_ignore); |
928 | de_fault (to_set_circular_trace_buffer, | |
929 | (void (*) (int)) | |
930 | target_ignore); | |
f6f899bf HAQ |
931 | de_fault (to_set_trace_buffer_size, |
932 | (void (*) (LONGEST)) | |
933 | target_ignore); | |
f196051f SS |
934 | de_fault (to_set_trace_notes, |
935 | (int (*) (char *, char *, char *)) | |
936 | return_zero); | |
711e434b PM |
937 | de_fault (to_get_tib_address, |
938 | (int (*) (ptid_t, CORE_ADDR *)) | |
939 | tcomplain); | |
d914c394 SS |
940 | de_fault (to_set_permissions, |
941 | (void (*) (void)) | |
942 | target_ignore); | |
0fb4aa4b PA |
943 | de_fault (to_static_tracepoint_marker_at, |
944 | (int (*) (CORE_ADDR, struct static_tracepoint_marker *)) | |
945 | return_zero); | |
946 | de_fault (to_static_tracepoint_markers_by_strid, | |
947 | (VEC(static_tracepoint_marker_p) * (*) (const char *)) | |
948 | tcomplain); | |
b3b9301e PA |
949 | de_fault (to_traceframe_info, |
950 | (struct traceframe_info * (*) (void)) | |
951 | tcomplain); | |
b775012e LM |
952 | de_fault (to_supports_evaluation_of_breakpoint_conditions, |
953 | (int (*) (void)) | |
954 | return_zero); | |
d3ce09f5 SS |
955 | de_fault (to_can_run_breakpoint_commands, |
956 | (int (*) (void)) | |
957 | return_zero); | |
d1feda86 YQ |
958 | de_fault (to_use_agent, |
959 | (int (*) (int)) | |
960 | tcomplain); | |
961 | de_fault (to_can_use_agent, | |
962 | (int (*) (void)) | |
963 | return_zero); | |
32231432 PA |
964 | de_fault (to_execution_direction, default_execution_direction); |
965 | ||
c906108c | 966 | #undef de_fault |
c906108c | 967 | |
7998dfc3 AC |
968 | /* Finally, position the target-stack beneath the squashed |
969 | "current_target". That way code looking for a non-inherited | |
970 | target method can quickly and simply find it. */ | |
971 | current_target.beneath = target_stack; | |
b4b61fdb DJ |
972 | |
973 | if (targetdebug) | |
974 | setup_target_debug (); | |
c906108c SS |
975 | } |
976 | ||
977 | /* Push a new target type into the stack of the existing target accessors, | |
978 | possibly superseding some of the existing accessors. | |
979 | ||
c906108c SS |
980 | Rather than allow an empty stack, we always have the dummy target at |
981 | the bottom stratum, so we can call the function vectors without | |
982 | checking them. */ | |
983 | ||
b26a4dcb | 984 | void |
fba45db2 | 985 | push_target (struct target_ops *t) |
c906108c | 986 | { |
258b763a | 987 | struct target_ops **cur; |
c906108c SS |
988 | |
989 | /* Check magic number. If wrong, it probably means someone changed | |
990 | the struct definition, but not all the places that initialize one. */ | |
991 | if (t->to_magic != OPS_MAGIC) | |
992 | { | |
c5aa993b JM |
993 | fprintf_unfiltered (gdb_stderr, |
994 | "Magic number of %s target struct wrong\n", | |
995 | t->to_shortname); | |
3e43a32a MS |
996 | internal_error (__FILE__, __LINE__, |
997 | _("failed internal consistency check")); | |
c906108c SS |
998 | } |
999 | ||
258b763a AC |
1000 | /* Find the proper stratum to install this target in. */ |
1001 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
c906108c | 1002 | { |
258b763a | 1003 | if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum) |
c906108c SS |
1004 | break; |
1005 | } | |
1006 | ||
258b763a | 1007 | /* If there's already targets at this stratum, remove them. */ |
88c231eb | 1008 | /* FIXME: cagney/2003-10-15: I think this should be popping all |
258b763a AC |
1009 | targets to CUR, and not just those at this stratum level. */ |
1010 | while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum) | |
1011 | { | |
1012 | /* There's already something at this stratum level. Close it, | |
1013 | and un-hook it from the stack. */ | |
1014 | struct target_ops *tmp = (*cur); | |
5d502164 | 1015 | |
258b763a AC |
1016 | (*cur) = (*cur)->beneath; |
1017 | tmp->beneath = NULL; | |
f1c07ab0 | 1018 | target_close (tmp, 0); |
258b763a | 1019 | } |
c906108c SS |
1020 | |
1021 | /* We have removed all targets in our stratum, now add the new one. */ | |
258b763a AC |
1022 | t->beneath = (*cur); |
1023 | (*cur) = t; | |
c906108c SS |
1024 | |
1025 | update_current_target (); | |
c906108c SS |
1026 | } |
1027 | ||
2bc416ba | 1028 | /* Remove a target_ops vector from the stack, wherever it may be. |
c906108c SS |
1029 | Return how many times it was removed (0 or 1). */ |
1030 | ||
1031 | int | |
fba45db2 | 1032 | unpush_target (struct target_ops *t) |
c906108c | 1033 | { |
258b763a AC |
1034 | struct target_ops **cur; |
1035 | struct target_ops *tmp; | |
c906108c | 1036 | |
c8d104ad PA |
1037 | if (t->to_stratum == dummy_stratum) |
1038 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 1039 | _("Attempt to unpush the dummy target")); |
c8d104ad | 1040 | |
c906108c | 1041 | /* Look for the specified target. Note that we assume that a target |
c378eb4e | 1042 | can only occur once in the target stack. */ |
c906108c | 1043 | |
258b763a AC |
1044 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) |
1045 | { | |
1046 | if ((*cur) == t) | |
1047 | break; | |
1048 | } | |
c906108c | 1049 | |
305436e0 PA |
1050 | /* If we don't find target_ops, quit. Only open targets should be |
1051 | closed. */ | |
258b763a | 1052 | if ((*cur) == NULL) |
305436e0 | 1053 | return 0; |
5269965e | 1054 | |
c378eb4e | 1055 | /* Unchain the target. */ |
258b763a AC |
1056 | tmp = (*cur); |
1057 | (*cur) = (*cur)->beneath; | |
1058 | tmp->beneath = NULL; | |
c906108c SS |
1059 | |
1060 | update_current_target (); | |
c906108c | 1061 | |
305436e0 PA |
1062 | /* Finally close the target. Note we do this after unchaining, so |
1063 | any target method calls from within the target_close | |
1064 | implementation don't end up in T anymore. */ | |
1065 | target_close (t, 0); | |
1066 | ||
c906108c SS |
1067 | return 1; |
1068 | } | |
1069 | ||
1070 | void | |
fba45db2 | 1071 | pop_target (void) |
c906108c | 1072 | { |
c378eb4e | 1073 | target_close (target_stack, 0); /* Let it clean up. */ |
258b763a | 1074 | if (unpush_target (target_stack) == 1) |
c906108c SS |
1075 | return; |
1076 | ||
c5aa993b JM |
1077 | fprintf_unfiltered (gdb_stderr, |
1078 | "pop_target couldn't find target %s\n", | |
1079 | current_target.to_shortname); | |
5d502164 MS |
1080 | internal_error (__FILE__, __LINE__, |
1081 | _("failed internal consistency check")); | |
c906108c SS |
1082 | } |
1083 | ||
aa76d38d | 1084 | void |
87ab71f0 | 1085 | pop_all_targets_above (enum strata above_stratum, int quitting) |
aa76d38d | 1086 | { |
87ab71f0 | 1087 | while ((int) (current_target.to_stratum) > (int) above_stratum) |
aa76d38d | 1088 | { |
b52323fa | 1089 | target_close (target_stack, quitting); |
aa76d38d PA |
1090 | if (!unpush_target (target_stack)) |
1091 | { | |
1092 | fprintf_unfiltered (gdb_stderr, | |
1093 | "pop_all_targets couldn't find target %s\n", | |
b52323fa | 1094 | target_stack->to_shortname); |
aa76d38d PA |
1095 | internal_error (__FILE__, __LINE__, |
1096 | _("failed internal consistency check")); | |
1097 | break; | |
1098 | } | |
1099 | } | |
1100 | } | |
1101 | ||
87ab71f0 PA |
1102 | void |
1103 | pop_all_targets (int quitting) | |
1104 | { | |
1105 | pop_all_targets_above (dummy_stratum, quitting); | |
1106 | } | |
1107 | ||
c0edd9ed JK |
1108 | /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */ |
1109 | ||
1110 | int | |
1111 | target_is_pushed (struct target_ops *t) | |
1112 | { | |
1113 | struct target_ops **cur; | |
1114 | ||
1115 | /* Check magic number. If wrong, it probably means someone changed | |
1116 | the struct definition, but not all the places that initialize one. */ | |
1117 | if (t->to_magic != OPS_MAGIC) | |
1118 | { | |
1119 | fprintf_unfiltered (gdb_stderr, | |
1120 | "Magic number of %s target struct wrong\n", | |
1121 | t->to_shortname); | |
3e43a32a MS |
1122 | internal_error (__FILE__, __LINE__, |
1123 | _("failed internal consistency check")); | |
c0edd9ed JK |
1124 | } |
1125 | ||
1126 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
1127 | if (*cur == t) | |
1128 | return 1; | |
1129 | ||
1130 | return 0; | |
1131 | } | |
1132 | ||
72f5cf0e | 1133 | /* Using the objfile specified in OBJFILE, find the address for the |
9e35dae4 DJ |
1134 | current thread's thread-local storage with offset OFFSET. */ |
1135 | CORE_ADDR | |
1136 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) | |
1137 | { | |
1138 | volatile CORE_ADDR addr = 0; | |
117de6a9 PA |
1139 | struct target_ops *target; |
1140 | ||
1141 | for (target = current_target.beneath; | |
1142 | target != NULL; | |
1143 | target = target->beneath) | |
1144 | { | |
1145 | if (target->to_get_thread_local_address != NULL) | |
1146 | break; | |
1147 | } | |
9e35dae4 | 1148 | |
117de6a9 | 1149 | if (target != NULL |
f5656ead | 1150 | && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ())) |
9e35dae4 DJ |
1151 | { |
1152 | ptid_t ptid = inferior_ptid; | |
1153 | volatile struct gdb_exception ex; | |
1154 | ||
1155 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
1156 | { | |
1157 | CORE_ADDR lm_addr; | |
1158 | ||
1159 | /* Fetch the load module address for this objfile. */ | |
f5656ead | 1160 | lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch (), |
9e35dae4 DJ |
1161 | objfile); |
1162 | /* If it's 0, throw the appropriate exception. */ | |
1163 | if (lm_addr == 0) | |
1164 | throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR, | |
1165 | _("TLS load module not found")); | |
1166 | ||
3e43a32a MS |
1167 | addr = target->to_get_thread_local_address (target, ptid, |
1168 | lm_addr, offset); | |
9e35dae4 DJ |
1169 | } |
1170 | /* If an error occurred, print TLS related messages here. Otherwise, | |
1171 | throw the error to some higher catcher. */ | |
1172 | if (ex.reason < 0) | |
1173 | { | |
1174 | int objfile_is_library = (objfile->flags & OBJF_SHARED); | |
1175 | ||
1176 | switch (ex.error) | |
1177 | { | |
1178 | case TLS_NO_LIBRARY_SUPPORT_ERROR: | |
3e43a32a MS |
1179 | error (_("Cannot find thread-local variables " |
1180 | "in this thread library.")); | |
9e35dae4 DJ |
1181 | break; |
1182 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: | |
1183 | if (objfile_is_library) | |
1184 | error (_("Cannot find shared library `%s' in dynamic" | |
1185 | " linker's load module list"), objfile->name); | |
1186 | else | |
1187 | error (_("Cannot find executable file `%s' in dynamic" | |
1188 | " linker's load module list"), objfile->name); | |
1189 | break; | |
1190 | case TLS_NOT_ALLOCATED_YET_ERROR: | |
1191 | if (objfile_is_library) | |
1192 | error (_("The inferior has not yet allocated storage for" | |
1193 | " thread-local variables in\n" | |
1194 | "the shared library `%s'\n" | |
1195 | "for %s"), | |
1196 | objfile->name, target_pid_to_str (ptid)); | |
1197 | else | |
1198 | error (_("The inferior has not yet allocated storage for" | |
1199 | " thread-local variables in\n" | |
1200 | "the executable `%s'\n" | |
1201 | "for %s"), | |
1202 | objfile->name, target_pid_to_str (ptid)); | |
1203 | break; | |
1204 | case TLS_GENERIC_ERROR: | |
1205 | if (objfile_is_library) | |
1206 | error (_("Cannot find thread-local storage for %s, " | |
1207 | "shared library %s:\n%s"), | |
1208 | target_pid_to_str (ptid), | |
1209 | objfile->name, ex.message); | |
1210 | else | |
1211 | error (_("Cannot find thread-local storage for %s, " | |
1212 | "executable file %s:\n%s"), | |
1213 | target_pid_to_str (ptid), | |
1214 | objfile->name, ex.message); | |
1215 | break; | |
1216 | default: | |
1217 | throw_exception (ex); | |
1218 | break; | |
1219 | } | |
1220 | } | |
1221 | } | |
1222 | /* It wouldn't be wrong here to try a gdbarch method, too; finding | |
1223 | TLS is an ABI-specific thing. But we don't do that yet. */ | |
1224 | else | |
1225 | error (_("Cannot find thread-local variables on this target")); | |
1226 | ||
1227 | return addr; | |
1228 | } | |
1229 | ||
c906108c SS |
1230 | #undef MIN |
1231 | #define MIN(A, B) (((A) <= (B)) ? (A) : (B)) | |
1232 | ||
1233 | /* target_read_string -- read a null terminated string, up to LEN bytes, | |
1234 | from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful. | |
1235 | Set *STRING to a pointer to malloc'd memory containing the data; the caller | |
1236 | is responsible for freeing it. Return the number of bytes successfully | |
1237 | read. */ | |
1238 | ||
1239 | int | |
fba45db2 | 1240 | target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop) |
c906108c | 1241 | { |
c2e8b827 | 1242 | int tlen, offset, i; |
1b0ba102 | 1243 | gdb_byte buf[4]; |
c906108c SS |
1244 | int errcode = 0; |
1245 | char *buffer; | |
1246 | int buffer_allocated; | |
1247 | char *bufptr; | |
1248 | unsigned int nbytes_read = 0; | |
1249 | ||
6217bf3e MS |
1250 | gdb_assert (string); |
1251 | ||
c906108c SS |
1252 | /* Small for testing. */ |
1253 | buffer_allocated = 4; | |
1254 | buffer = xmalloc (buffer_allocated); | |
1255 | bufptr = buffer; | |
1256 | ||
c906108c SS |
1257 | while (len > 0) |
1258 | { | |
1259 | tlen = MIN (len, 4 - (memaddr & 3)); | |
1260 | offset = memaddr & 3; | |
1261 | ||
1b0ba102 | 1262 | errcode = target_read_memory (memaddr & ~3, buf, sizeof buf); |
c906108c SS |
1263 | if (errcode != 0) |
1264 | { | |
1265 | /* The transfer request might have crossed the boundary to an | |
c378eb4e | 1266 | unallocated region of memory. Retry the transfer, requesting |
c906108c SS |
1267 | a single byte. */ |
1268 | tlen = 1; | |
1269 | offset = 0; | |
b8eb5af0 | 1270 | errcode = target_read_memory (memaddr, buf, 1); |
c906108c SS |
1271 | if (errcode != 0) |
1272 | goto done; | |
1273 | } | |
1274 | ||
1275 | if (bufptr - buffer + tlen > buffer_allocated) | |
1276 | { | |
1277 | unsigned int bytes; | |
5d502164 | 1278 | |
c906108c SS |
1279 | bytes = bufptr - buffer; |
1280 | buffer_allocated *= 2; | |
1281 | buffer = xrealloc (buffer, buffer_allocated); | |
1282 | bufptr = buffer + bytes; | |
1283 | } | |
1284 | ||
1285 | for (i = 0; i < tlen; i++) | |
1286 | { | |
1287 | *bufptr++ = buf[i + offset]; | |
1288 | if (buf[i + offset] == '\000') | |
1289 | { | |
1290 | nbytes_read += i + 1; | |
1291 | goto done; | |
1292 | } | |
1293 | } | |
1294 | ||
1295 | memaddr += tlen; | |
1296 | len -= tlen; | |
1297 | nbytes_read += tlen; | |
1298 | } | |
c5aa993b | 1299 | done: |
6217bf3e | 1300 | *string = buffer; |
c906108c SS |
1301 | if (errnop != NULL) |
1302 | *errnop = errcode; | |
c906108c SS |
1303 | return nbytes_read; |
1304 | } | |
1305 | ||
07b82ea5 PA |
1306 | struct target_section_table * |
1307 | target_get_section_table (struct target_ops *target) | |
1308 | { | |
1309 | struct target_ops *t; | |
1310 | ||
1311 | if (targetdebug) | |
1312 | fprintf_unfiltered (gdb_stdlog, "target_get_section_table ()\n"); | |
1313 | ||
1314 | for (t = target; t != NULL; t = t->beneath) | |
1315 | if (t->to_get_section_table != NULL) | |
1316 | return (*t->to_get_section_table) (t); | |
1317 | ||
1318 | return NULL; | |
1319 | } | |
1320 | ||
8db32d44 | 1321 | /* Find a section containing ADDR. */ |
07b82ea5 | 1322 | |
0542c86d | 1323 | struct target_section * |
8db32d44 AC |
1324 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
1325 | { | |
07b82ea5 | 1326 | struct target_section_table *table = target_get_section_table (target); |
0542c86d | 1327 | struct target_section *secp; |
07b82ea5 PA |
1328 | |
1329 | if (table == NULL) | |
1330 | return NULL; | |
1331 | ||
1332 | for (secp = table->sections; secp < table->sections_end; secp++) | |
8db32d44 AC |
1333 | { |
1334 | if (addr >= secp->addr && addr < secp->endaddr) | |
1335 | return secp; | |
1336 | } | |
1337 | return NULL; | |
1338 | } | |
1339 | ||
e6e4e701 PA |
1340 | /* Read memory from the live target, even if currently inspecting a |
1341 | traceframe. The return is the same as that of target_read. */ | |
1342 | ||
1343 | static LONGEST | |
1344 | target_read_live_memory (enum target_object object, | |
1345 | ULONGEST memaddr, gdb_byte *myaddr, LONGEST len) | |
1346 | { | |
1347 | int ret; | |
1348 | struct cleanup *cleanup; | |
1349 | ||
1350 | /* Switch momentarily out of tfind mode so to access live memory. | |
1351 | Note that this must not clear global state, such as the frame | |
1352 | cache, which must still remain valid for the previous traceframe. | |
1353 | We may be _building_ the frame cache at this point. */ | |
1354 | cleanup = make_cleanup_restore_traceframe_number (); | |
1355 | set_traceframe_number (-1); | |
1356 | ||
1357 | ret = target_read (current_target.beneath, object, NULL, | |
1358 | myaddr, memaddr, len); | |
1359 | ||
1360 | do_cleanups (cleanup); | |
1361 | return ret; | |
1362 | } | |
1363 | ||
1364 | /* Using the set of read-only target sections of OPS, read live | |
1365 | read-only memory. Note that the actual reads start from the | |
5657161f PA |
1366 | top-most target again. |
1367 | ||
1368 | For interface/parameters/return description see target.h, | |
1369 | to_xfer_partial. */ | |
e6e4e701 PA |
1370 | |
1371 | static LONGEST | |
1372 | memory_xfer_live_readonly_partial (struct target_ops *ops, | |
1373 | enum target_object object, | |
1374 | gdb_byte *readbuf, ULONGEST memaddr, | |
1375 | LONGEST len) | |
1376 | { | |
1377 | struct target_section *secp; | |
1378 | struct target_section_table *table; | |
1379 | ||
1380 | secp = target_section_by_addr (ops, memaddr); | |
1381 | if (secp != NULL | |
1382 | && (bfd_get_section_flags (secp->bfd, secp->the_bfd_section) | |
1383 | & SEC_READONLY)) | |
1384 | { | |
1385 | struct target_section *p; | |
1386 | ULONGEST memend = memaddr + len; | |
1387 | ||
1388 | table = target_get_section_table (ops); | |
1389 | ||
1390 | for (p = table->sections; p < table->sections_end; p++) | |
1391 | { | |
1392 | if (memaddr >= p->addr) | |
1393 | { | |
1394 | if (memend <= p->endaddr) | |
1395 | { | |
1396 | /* Entire transfer is within this section. */ | |
1397 | return target_read_live_memory (object, memaddr, | |
1398 | readbuf, len); | |
1399 | } | |
1400 | else if (memaddr >= p->endaddr) | |
1401 | { | |
1402 | /* This section ends before the transfer starts. */ | |
1403 | continue; | |
1404 | } | |
1405 | else | |
1406 | { | |
1407 | /* This section overlaps the transfer. Just do half. */ | |
1408 | len = p->endaddr - memaddr; | |
1409 | return target_read_live_memory (object, memaddr, | |
1410 | readbuf, len); | |
1411 | } | |
1412 | } | |
1413 | } | |
1414 | } | |
1415 | ||
1416 | return 0; | |
1417 | } | |
1418 | ||
7f79c47e DE |
1419 | /* Perform a partial memory transfer. |
1420 | For docs see target.h, to_xfer_partial. */ | |
cf7a04e8 DJ |
1421 | |
1422 | static LONGEST | |
f0ba3972 PA |
1423 | memory_xfer_partial_1 (struct target_ops *ops, enum target_object object, |
1424 | void *readbuf, const void *writebuf, ULONGEST memaddr, | |
1425 | LONGEST len) | |
0779438d | 1426 | { |
cf7a04e8 DJ |
1427 | LONGEST res; |
1428 | int reg_len; | |
1429 | struct mem_region *region; | |
4e5d721f | 1430 | struct inferior *inf; |
cf7a04e8 | 1431 | |
07b82ea5 PA |
1432 | /* For accesses to unmapped overlay sections, read directly from |
1433 | files. Must do this first, as MEMADDR may need adjustment. */ | |
1434 | if (readbuf != NULL && overlay_debugging) | |
1435 | { | |
1436 | struct obj_section *section = find_pc_overlay (memaddr); | |
5d502164 | 1437 | |
07b82ea5 PA |
1438 | if (pc_in_unmapped_range (memaddr, section)) |
1439 | { | |
1440 | struct target_section_table *table | |
1441 | = target_get_section_table (ops); | |
1442 | const char *section_name = section->the_bfd_section->name; | |
5d502164 | 1443 | |
07b82ea5 PA |
1444 | memaddr = overlay_mapped_address (memaddr, section); |
1445 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
1446 | memaddr, len, | |
1447 | table->sections, | |
1448 | table->sections_end, | |
1449 | section_name); | |
1450 | } | |
1451 | } | |
1452 | ||
1453 | /* Try the executable files, if "trust-readonly-sections" is set. */ | |
cf7a04e8 DJ |
1454 | if (readbuf != NULL && trust_readonly) |
1455 | { | |
0542c86d | 1456 | struct target_section *secp; |
07b82ea5 | 1457 | struct target_section_table *table; |
cf7a04e8 DJ |
1458 | |
1459 | secp = target_section_by_addr (ops, memaddr); | |
1460 | if (secp != NULL | |
1461 | && (bfd_get_section_flags (secp->bfd, secp->the_bfd_section) | |
1462 | & SEC_READONLY)) | |
07b82ea5 PA |
1463 | { |
1464 | table = target_get_section_table (ops); | |
1465 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
1466 | memaddr, len, | |
1467 | table->sections, | |
1468 | table->sections_end, | |
1469 | NULL); | |
1470 | } | |
98646950 UW |
1471 | } |
1472 | ||
e6e4e701 PA |
1473 | /* If reading unavailable memory in the context of traceframes, and |
1474 | this address falls within a read-only section, fallback to | |
1475 | reading from live memory. */ | |
1476 | if (readbuf != NULL && get_traceframe_number () != -1) | |
1477 | { | |
1478 | VEC(mem_range_s) *available; | |
1479 | ||
1480 | /* If we fail to get the set of available memory, then the | |
1481 | target does not support querying traceframe info, and so we | |
1482 | attempt reading from the traceframe anyway (assuming the | |
1483 | target implements the old QTro packet then). */ | |
1484 | if (traceframe_available_memory (&available, memaddr, len)) | |
1485 | { | |
1486 | struct cleanup *old_chain; | |
1487 | ||
1488 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available); | |
1489 | ||
1490 | if (VEC_empty (mem_range_s, available) | |
1491 | || VEC_index (mem_range_s, available, 0)->start != memaddr) | |
1492 | { | |
1493 | /* Don't read into the traceframe's available | |
1494 | memory. */ | |
1495 | if (!VEC_empty (mem_range_s, available)) | |
1496 | { | |
1497 | LONGEST oldlen = len; | |
1498 | ||
1499 | len = VEC_index (mem_range_s, available, 0)->start - memaddr; | |
1500 | gdb_assert (len <= oldlen); | |
1501 | } | |
1502 | ||
1503 | do_cleanups (old_chain); | |
1504 | ||
1505 | /* This goes through the topmost target again. */ | |
1506 | res = memory_xfer_live_readonly_partial (ops, object, | |
1507 | readbuf, memaddr, len); | |
1508 | if (res > 0) | |
1509 | return res; | |
1510 | ||
1511 | /* No use trying further, we know some memory starting | |
1512 | at MEMADDR isn't available. */ | |
1513 | return -1; | |
1514 | } | |
1515 | ||
1516 | /* Don't try to read more than how much is available, in | |
1517 | case the target implements the deprecated QTro packet to | |
1518 | cater for older GDBs (the target's knowledge of read-only | |
1519 | sections may be outdated by now). */ | |
1520 | len = VEC_index (mem_range_s, available, 0)->length; | |
1521 | ||
1522 | do_cleanups (old_chain); | |
1523 | } | |
1524 | } | |
1525 | ||
cf7a04e8 DJ |
1526 | /* Try GDB's internal data cache. */ |
1527 | region = lookup_mem_region (memaddr); | |
4b5752d0 VP |
1528 | /* region->hi == 0 means there's no upper bound. */ |
1529 | if (memaddr + len < region->hi || region->hi == 0) | |
cf7a04e8 DJ |
1530 | reg_len = len; |
1531 | else | |
1532 | reg_len = region->hi - memaddr; | |
1533 | ||
1534 | switch (region->attrib.mode) | |
1535 | { | |
1536 | case MEM_RO: | |
1537 | if (writebuf != NULL) | |
1538 | return -1; | |
1539 | break; | |
1540 | ||
1541 | case MEM_WO: | |
1542 | if (readbuf != NULL) | |
1543 | return -1; | |
1544 | break; | |
a76d924d DJ |
1545 | |
1546 | case MEM_FLASH: | |
1547 | /* We only support writing to flash during "load" for now. */ | |
1548 | if (writebuf != NULL) | |
1549 | error (_("Writing to flash memory forbidden in this context")); | |
1550 | break; | |
4b5752d0 VP |
1551 | |
1552 | case MEM_NONE: | |
1553 | return -1; | |
cf7a04e8 DJ |
1554 | } |
1555 | ||
6c95b8df PA |
1556 | if (!ptid_equal (inferior_ptid, null_ptid)) |
1557 | inf = find_inferior_pid (ptid_get_pid (inferior_ptid)); | |
1558 | else | |
1559 | inf = NULL; | |
4e5d721f DE |
1560 | |
1561 | if (inf != NULL | |
2f4d8875 PA |
1562 | /* The dcache reads whole cache lines; that doesn't play well |
1563 | with reading from a trace buffer, because reading outside of | |
1564 | the collected memory range fails. */ | |
1565 | && get_traceframe_number () == -1 | |
4e5d721f DE |
1566 | && (region->attrib.cache |
1567 | || (stack_cache_enabled_p && object == TARGET_OBJECT_STACK_MEMORY))) | |
cf7a04e8 | 1568 | { |
cf7a04e8 | 1569 | if (readbuf != NULL) |
25f122dc | 1570 | res = dcache_xfer_memory (ops, target_dcache, memaddr, readbuf, |
cf7a04e8 DJ |
1571 | reg_len, 0); |
1572 | else | |
1573 | /* FIXME drow/2006-08-09: If we're going to preserve const | |
1574 | correctness dcache_xfer_memory should take readbuf and | |
1575 | writebuf. */ | |
25f122dc | 1576 | res = dcache_xfer_memory (ops, target_dcache, memaddr, |
cf7a04e8 DJ |
1577 | (void *) writebuf, |
1578 | reg_len, 1); | |
1579 | if (res <= 0) | |
1580 | return -1; | |
1581 | else | |
f0ba3972 | 1582 | return res; |
cf7a04e8 DJ |
1583 | } |
1584 | ||
1585 | /* If none of those methods found the memory we wanted, fall back | |
1586 | to a target partial transfer. Normally a single call to | |
1587 | to_xfer_partial is enough; if it doesn't recognize an object | |
1588 | it will call the to_xfer_partial of the next target down. | |
1589 | But for memory this won't do. Memory is the only target | |
1590 | object which can be read from more than one valid target. | |
1591 | A core file, for instance, could have some of memory but | |
1592 | delegate other bits to the target below it. So, we must | |
1593 | manually try all targets. */ | |
1594 | ||
1595 | do | |
1596 | { | |
1597 | res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
4b5752d0 | 1598 | readbuf, writebuf, memaddr, reg_len); |
cf7a04e8 | 1599 | if (res > 0) |
8defab1a | 1600 | break; |
cf7a04e8 | 1601 | |
5ad3a4ca DJ |
1602 | /* We want to continue past core files to executables, but not |
1603 | past a running target's memory. */ | |
c35b1492 | 1604 | if (ops->to_has_all_memory (ops)) |
8defab1a | 1605 | break; |
5ad3a4ca | 1606 | |
cf7a04e8 DJ |
1607 | ops = ops->beneath; |
1608 | } | |
1609 | while (ops != NULL); | |
1610 | ||
41dcd03f DE |
1611 | /* Make sure the cache gets updated no matter what - if we are writing |
1612 | to the stack. Even if this write is not tagged as such, we still need | |
1613 | to update the cache. */ | |
1614 | ||
1615 | if (res > 0 | |
1616 | && inf != NULL | |
1617 | && writebuf != NULL | |
1618 | && !region->attrib.cache | |
1619 | && stack_cache_enabled_p | |
1620 | && object != TARGET_OBJECT_STACK_MEMORY) | |
1621 | { | |
7d4f32d3 | 1622 | dcache_update (target_dcache, memaddr, (void *) writebuf, res); |
41dcd03f DE |
1623 | } |
1624 | ||
cf7a04e8 DJ |
1625 | /* If we still haven't got anything, return the last error. We |
1626 | give up. */ | |
1627 | return res; | |
0779438d AC |
1628 | } |
1629 | ||
f0ba3972 PA |
1630 | /* Perform a partial memory transfer. For docs see target.h, |
1631 | to_xfer_partial. */ | |
1632 | ||
1633 | static LONGEST | |
1634 | memory_xfer_partial (struct target_ops *ops, enum target_object object, | |
1635 | void *readbuf, const void *writebuf, ULONGEST memaddr, | |
1636 | LONGEST len) | |
1637 | { | |
1638 | int res; | |
1639 | ||
1640 | /* Zero length requests are ok and require no work. */ | |
1641 | if (len == 0) | |
1642 | return 0; | |
1643 | ||
1644 | /* Fill in READBUF with breakpoint shadows, or WRITEBUF with | |
1645 | breakpoint insns, thus hiding out from higher layers whether | |
1646 | there are software breakpoints inserted in the code stream. */ | |
1647 | if (readbuf != NULL) | |
1648 | { | |
1649 | res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len); | |
1650 | ||
1651 | if (res > 0 && !show_memory_breakpoints) | |
1652 | breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, res); | |
1653 | } | |
1654 | else | |
1655 | { | |
1656 | void *buf; | |
1657 | struct cleanup *old_chain; | |
1658 | ||
1659 | buf = xmalloc (len); | |
1660 | old_chain = make_cleanup (xfree, buf); | |
1661 | memcpy (buf, writebuf, len); | |
1662 | ||
1663 | breakpoint_xfer_memory (NULL, buf, writebuf, memaddr, len); | |
1664 | res = memory_xfer_partial_1 (ops, object, NULL, buf, memaddr, len); | |
1665 | ||
1666 | do_cleanups (old_chain); | |
1667 | } | |
1668 | ||
1669 | return res; | |
1670 | } | |
1671 | ||
8defab1a DJ |
1672 | static void |
1673 | restore_show_memory_breakpoints (void *arg) | |
1674 | { | |
1675 | show_memory_breakpoints = (uintptr_t) arg; | |
1676 | } | |
1677 | ||
1678 | struct cleanup * | |
1679 | make_show_memory_breakpoints_cleanup (int show) | |
1680 | { | |
1681 | int current = show_memory_breakpoints; | |
8defab1a | 1682 | |
5d502164 | 1683 | show_memory_breakpoints = show; |
8defab1a DJ |
1684 | return make_cleanup (restore_show_memory_breakpoints, |
1685 | (void *) (uintptr_t) current); | |
1686 | } | |
1687 | ||
7f79c47e DE |
1688 | /* For docs see target.h, to_xfer_partial. */ |
1689 | ||
27394598 AC |
1690 | static LONGEST |
1691 | target_xfer_partial (struct target_ops *ops, | |
1692 | enum target_object object, const char *annex, | |
1693 | void *readbuf, const void *writebuf, | |
1694 | ULONGEST offset, LONGEST len) | |
1695 | { | |
1696 | LONGEST retval; | |
1697 | ||
1698 | gdb_assert (ops->to_xfer_partial != NULL); | |
cf7a04e8 | 1699 | |
d914c394 SS |
1700 | if (writebuf && !may_write_memory) |
1701 | error (_("Writing to memory is not allowed (addr %s, len %s)"), | |
1702 | core_addr_to_string_nz (offset), plongest (len)); | |
1703 | ||
cf7a04e8 DJ |
1704 | /* If this is a memory transfer, let the memory-specific code |
1705 | have a look at it instead. Memory transfers are more | |
1706 | complicated. */ | |
4e5d721f DE |
1707 | if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY) |
1708 | retval = memory_xfer_partial (ops, object, readbuf, | |
1709 | writebuf, offset, len); | |
cf7a04e8 DJ |
1710 | else |
1711 | { | |
1712 | enum target_object raw_object = object; | |
1713 | ||
1714 | /* If this is a raw memory transfer, request the normal | |
1715 | memory object from other layers. */ | |
1716 | if (raw_object == TARGET_OBJECT_RAW_MEMORY) | |
1717 | raw_object = TARGET_OBJECT_MEMORY; | |
1718 | ||
1719 | retval = ops->to_xfer_partial (ops, raw_object, annex, readbuf, | |
1720 | writebuf, offset, len); | |
1721 | } | |
1722 | ||
27394598 AC |
1723 | if (targetdebug) |
1724 | { | |
1725 | const unsigned char *myaddr = NULL; | |
1726 | ||
1727 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
1728 | "%s:target_xfer_partial " |
1729 | "(%d, %s, %s, %s, %s, %s) = %s", | |
27394598 AC |
1730 | ops->to_shortname, |
1731 | (int) object, | |
1732 | (annex ? annex : "(null)"), | |
53b71562 JB |
1733 | host_address_to_string (readbuf), |
1734 | host_address_to_string (writebuf), | |
0b1553bc UW |
1735 | core_addr_to_string_nz (offset), |
1736 | plongest (len), plongest (retval)); | |
27394598 AC |
1737 | |
1738 | if (readbuf) | |
1739 | myaddr = readbuf; | |
1740 | if (writebuf) | |
1741 | myaddr = writebuf; | |
1742 | if (retval > 0 && myaddr != NULL) | |
1743 | { | |
1744 | int i; | |
2bc416ba | 1745 | |
27394598 AC |
1746 | fputs_unfiltered (", bytes =", gdb_stdlog); |
1747 | for (i = 0; i < retval; i++) | |
1748 | { | |
53b71562 | 1749 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1750 | { |
1751 | if (targetdebug < 2 && i > 0) | |
1752 | { | |
1753 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
1754 | break; | |
1755 | } | |
1756 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1757 | } | |
2bc416ba | 1758 | |
27394598 AC |
1759 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
1760 | } | |
1761 | } | |
2bc416ba | 1762 | |
27394598 AC |
1763 | fputc_unfiltered ('\n', gdb_stdlog); |
1764 | } | |
1765 | return retval; | |
1766 | } | |
1767 | ||
c906108c SS |
1768 | /* Read LEN bytes of target memory at address MEMADDR, placing the results in |
1769 | GDB's memory at MYADDR. Returns either 0 for success or an errno value | |
1770 | if any error occurs. | |
1771 | ||
1772 | If an error occurs, no guarantee is made about the contents of the data at | |
1773 | MYADDR. In particular, the caller should not depend upon partial reads | |
1774 | filling the buffer with good data. There is no way for the caller to know | |
1775 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 | 1776 | deal with partial reads should call target_read (which will retry until |
c378eb4e | 1777 | it makes no progress, and then return how much was transferred). */ |
c906108c SS |
1778 | |
1779 | int | |
1b162304 | 1780 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
c906108c | 1781 | { |
c35b1492 PA |
1782 | /* Dispatch to the topmost target, not the flattened current_target. |
1783 | Memory accesses check target->to_has_(all_)memory, and the | |
1784 | flattened target doesn't inherit those. */ | |
1785 | if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1786 | myaddr, memaddr, len) == len) |
1787 | return 0; | |
0779438d | 1788 | else |
cf7a04e8 | 1789 | return EIO; |
c906108c SS |
1790 | } |
1791 | ||
4e5d721f DE |
1792 | /* Like target_read_memory, but specify explicitly that this is a read from |
1793 | the target's stack. This may trigger different cache behavior. */ | |
1794 | ||
1795 | int | |
45aa4659 | 1796 | target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
4e5d721f DE |
1797 | { |
1798 | /* Dispatch to the topmost target, not the flattened current_target. | |
1799 | Memory accesses check target->to_has_(all_)memory, and the | |
1800 | flattened target doesn't inherit those. */ | |
1801 | ||
1802 | if (target_read (current_target.beneath, TARGET_OBJECT_STACK_MEMORY, NULL, | |
1803 | myaddr, memaddr, len) == len) | |
1804 | return 0; | |
1805 | else | |
1806 | return EIO; | |
1807 | } | |
1808 | ||
7f79c47e DE |
1809 | /* Write LEN bytes from MYADDR to target memory at address MEMADDR. |
1810 | Returns either 0 for success or an errno value if any error occurs. | |
1811 | If an error occurs, no guarantee is made about how much data got written. | |
1812 | Callers that can deal with partial writes should call target_write. */ | |
1813 | ||
c906108c | 1814 | int |
45aa4659 | 1815 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
c906108c | 1816 | { |
c35b1492 PA |
1817 | /* Dispatch to the topmost target, not the flattened current_target. |
1818 | Memory accesses check target->to_has_(all_)memory, and the | |
1819 | flattened target doesn't inherit those. */ | |
1820 | if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1821 | myaddr, memaddr, len) == len) |
1822 | return 0; | |
0779438d | 1823 | else |
cf7a04e8 | 1824 | return EIO; |
c906108c | 1825 | } |
c5aa993b | 1826 | |
f0ba3972 PA |
1827 | /* Write LEN bytes from MYADDR to target raw memory at address |
1828 | MEMADDR. Returns either 0 for success or an errno value if any | |
1829 | error occurs. If an error occurs, no guarantee is made about how | |
1830 | much data got written. Callers that can deal with partial writes | |
1831 | should call target_write. */ | |
1832 | ||
1833 | int | |
45aa4659 | 1834 | target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
f0ba3972 PA |
1835 | { |
1836 | /* Dispatch to the topmost target, not the flattened current_target. | |
1837 | Memory accesses check target->to_has_(all_)memory, and the | |
1838 | flattened target doesn't inherit those. */ | |
1839 | if (target_write (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, | |
1840 | myaddr, memaddr, len) == len) | |
1841 | return 0; | |
1842 | else | |
1843 | return EIO; | |
1844 | } | |
1845 | ||
fd79ecee DJ |
1846 | /* Fetch the target's memory map. */ |
1847 | ||
1848 | VEC(mem_region_s) * | |
1849 | target_memory_map (void) | |
1850 | { | |
1851 | VEC(mem_region_s) *result; | |
1852 | struct mem_region *last_one, *this_one; | |
1853 | int ix; | |
1854 | struct target_ops *t; | |
1855 | ||
1856 | if (targetdebug) | |
1857 | fprintf_unfiltered (gdb_stdlog, "target_memory_map ()\n"); | |
1858 | ||
1859 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1860 | if (t->to_memory_map != NULL) | |
1861 | break; | |
1862 | ||
1863 | if (t == NULL) | |
1864 | return NULL; | |
1865 | ||
1866 | result = t->to_memory_map (t); | |
1867 | if (result == NULL) | |
1868 | return NULL; | |
1869 | ||
1870 | qsort (VEC_address (mem_region_s, result), | |
1871 | VEC_length (mem_region_s, result), | |
1872 | sizeof (struct mem_region), mem_region_cmp); | |
1873 | ||
1874 | /* Check that regions do not overlap. Simultaneously assign | |
1875 | a numbering for the "mem" commands to use to refer to | |
1876 | each region. */ | |
1877 | last_one = NULL; | |
1878 | for (ix = 0; VEC_iterate (mem_region_s, result, ix, this_one); ix++) | |
1879 | { | |
1880 | this_one->number = ix; | |
1881 | ||
1882 | if (last_one && last_one->hi > this_one->lo) | |
1883 | { | |
1884 | warning (_("Overlapping regions in memory map: ignoring")); | |
1885 | VEC_free (mem_region_s, result); | |
1886 | return NULL; | |
1887 | } | |
1888 | last_one = this_one; | |
1889 | } | |
1890 | ||
1891 | return result; | |
1892 | } | |
1893 | ||
a76d924d DJ |
1894 | void |
1895 | target_flash_erase (ULONGEST address, LONGEST length) | |
1896 | { | |
1897 | struct target_ops *t; | |
1898 | ||
1899 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1900 | if (t->to_flash_erase != NULL) | |
5d502164 MS |
1901 | { |
1902 | if (targetdebug) | |
1903 | fprintf_unfiltered (gdb_stdlog, "target_flash_erase (%s, %s)\n", | |
1904 | hex_string (address), phex (length, 0)); | |
1905 | t->to_flash_erase (t, address, length); | |
1906 | return; | |
1907 | } | |
a76d924d DJ |
1908 | |
1909 | tcomplain (); | |
1910 | } | |
1911 | ||
1912 | void | |
1913 | target_flash_done (void) | |
1914 | { | |
1915 | struct target_ops *t; | |
1916 | ||
1917 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1918 | if (t->to_flash_done != NULL) | |
5d502164 MS |
1919 | { |
1920 | if (targetdebug) | |
1921 | fprintf_unfiltered (gdb_stdlog, "target_flash_done\n"); | |
1922 | t->to_flash_done (t); | |
1923 | return; | |
1924 | } | |
a76d924d DJ |
1925 | |
1926 | tcomplain (); | |
1927 | } | |
1928 | ||
920d2a44 AC |
1929 | static void |
1930 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1931 | struct cmd_list_element *c, const char *value) | |
1932 | { | |
3e43a32a MS |
1933 | fprintf_filtered (file, |
1934 | _("Mode for reading from readonly sections is %s.\n"), | |
920d2a44 AC |
1935 | value); |
1936 | } | |
3a11626d | 1937 | |
1e3ff5ad AC |
1938 | /* More generic transfers. */ |
1939 | ||
0088c768 | 1940 | static LONGEST |
8aa91c1e | 1941 | default_xfer_partial (struct target_ops *ops, enum target_object object, |
2bc416ba | 1942 | const char *annex, gdb_byte *readbuf, |
1b0ba102 | 1943 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) |
0088c768 AC |
1944 | { |
1945 | if (object == TARGET_OBJECT_MEMORY | |
c8e73a31 AC |
1946 | && ops->deprecated_xfer_memory != NULL) |
1947 | /* If available, fall back to the target's | |
1948 | "deprecated_xfer_memory" method. */ | |
0088c768 | 1949 | { |
4b8a223f | 1950 | int xfered = -1; |
5d502164 | 1951 | |
0088c768 | 1952 | errno = 0; |
4b8a223f AC |
1953 | if (writebuf != NULL) |
1954 | { | |
1955 | void *buffer = xmalloc (len); | |
1956 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |
5d502164 | 1957 | |
4b8a223f | 1958 | memcpy (buffer, writebuf, len); |
c8e73a31 AC |
1959 | xfered = ops->deprecated_xfer_memory (offset, buffer, len, |
1960 | 1/*write*/, NULL, ops); | |
4b8a223f AC |
1961 | do_cleanups (cleanup); |
1962 | } | |
1963 | if (readbuf != NULL) | |
244e85c8 MS |
1964 | xfered = ops->deprecated_xfer_memory (offset, readbuf, len, |
1965 | 0/*read*/, NULL, ops); | |
0088c768 AC |
1966 | if (xfered > 0) |
1967 | return xfered; | |
1968 | else if (xfered == 0 && errno == 0) | |
c8e73a31 AC |
1969 | /* "deprecated_xfer_memory" uses 0, cross checked against |
1970 | ERRNO as one indication of an error. */ | |
0088c768 AC |
1971 | return 0; |
1972 | else | |
1973 | return -1; | |
1974 | } | |
1975 | else if (ops->beneath != NULL) | |
cf7a04e8 DJ |
1976 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, |
1977 | readbuf, writebuf, offset, len); | |
1978 | else | |
1979 | return -1; | |
1980 | } | |
1981 | ||
1982 | /* The xfer_partial handler for the topmost target. Unlike the default, | |
1983 | it does not need to handle memory specially; it just passes all | |
1984 | requests down the stack. */ | |
1985 | ||
1986 | static LONGEST | |
1987 | current_xfer_partial (struct target_ops *ops, enum target_object object, | |
1988 | const char *annex, gdb_byte *readbuf, | |
1989 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1990 | { | |
1991 | if (ops->beneath != NULL) | |
1992 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, | |
1993 | readbuf, writebuf, offset, len); | |
0088c768 AC |
1994 | else |
1995 | return -1; | |
1996 | } | |
1997 | ||
7f79c47e | 1998 | /* Target vector read/write partial wrapper functions. */ |
0088c768 | 1999 | |
13547ab6 | 2000 | static LONGEST |
1e3ff5ad AC |
2001 | target_read_partial (struct target_ops *ops, |
2002 | enum target_object object, | |
1b0ba102 | 2003 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
2004 | ULONGEST offset, LONGEST len) |
2005 | { | |
27394598 | 2006 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len); |
1e3ff5ad AC |
2007 | } |
2008 | ||
13547ab6 | 2009 | static LONGEST |
1e3ff5ad AC |
2010 | target_write_partial (struct target_ops *ops, |
2011 | enum target_object object, | |
1b0ba102 | 2012 | const char *annex, const gdb_byte *buf, |
1e3ff5ad AC |
2013 | ULONGEST offset, LONGEST len) |
2014 | { | |
27394598 | 2015 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len); |
1e3ff5ad AC |
2016 | } |
2017 | ||
2018 | /* Wrappers to perform the full transfer. */ | |
7f79c47e DE |
2019 | |
2020 | /* For docs on target_read see target.h. */ | |
2021 | ||
1e3ff5ad AC |
2022 | LONGEST |
2023 | target_read (struct target_ops *ops, | |
2024 | enum target_object object, | |
1b0ba102 | 2025 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
2026 | ULONGEST offset, LONGEST len) |
2027 | { | |
2028 | LONGEST xfered = 0; | |
5d502164 | 2029 | |
1e3ff5ad AC |
2030 | while (xfered < len) |
2031 | { | |
0088c768 | 2032 | LONGEST xfer = target_read_partial (ops, object, annex, |
fc1a4b47 | 2033 | (gdb_byte *) buf + xfered, |
0088c768 | 2034 | offset + xfered, len - xfered); |
5d502164 | 2035 | |
1e3ff5ad | 2036 | /* Call an observer, notifying them of the xfer progress? */ |
13547ab6 DJ |
2037 | if (xfer == 0) |
2038 | return xfered; | |
2039 | if (xfer < 0) | |
0088c768 | 2040 | return -1; |
1e3ff5ad AC |
2041 | xfered += xfer; |
2042 | QUIT; | |
2043 | } | |
2044 | return len; | |
2045 | } | |
2046 | ||
f1a507a1 JB |
2047 | /* Assuming that the entire [begin, end) range of memory cannot be |
2048 | read, try to read whatever subrange is possible to read. | |
2049 | ||
2050 | The function returns, in RESULT, either zero or one memory block. | |
2051 | If there's a readable subrange at the beginning, it is completely | |
2052 | read and returned. Any further readable subrange will not be read. | |
2053 | Otherwise, if there's a readable subrange at the end, it will be | |
2054 | completely read and returned. Any readable subranges before it | |
2055 | (obviously, not starting at the beginning), will be ignored. In | |
2056 | other cases -- either no readable subrange, or readable subrange(s) | |
2057 | that is neither at the beginning, or end, nothing is returned. | |
2058 | ||
2059 | The purpose of this function is to handle a read across a boundary | |
2060 | of accessible memory in a case when memory map is not available. | |
2061 | The above restrictions are fine for this case, but will give | |
2062 | incorrect results if the memory is 'patchy'. However, supporting | |
2063 | 'patchy' memory would require trying to read every single byte, | |
2064 | and it seems unacceptable solution. Explicit memory map is | |
2065 | recommended for this case -- and target_read_memory_robust will | |
2066 | take care of reading multiple ranges then. */ | |
8dedea02 VP |
2067 | |
2068 | static void | |
3e43a32a MS |
2069 | read_whatever_is_readable (struct target_ops *ops, |
2070 | ULONGEST begin, ULONGEST end, | |
8dedea02 | 2071 | VEC(memory_read_result_s) **result) |
d5086790 | 2072 | { |
f1a507a1 | 2073 | gdb_byte *buf = xmalloc (end - begin); |
8dedea02 VP |
2074 | ULONGEST current_begin = begin; |
2075 | ULONGEST current_end = end; | |
2076 | int forward; | |
2077 | memory_read_result_s r; | |
2078 | ||
2079 | /* If we previously failed to read 1 byte, nothing can be done here. */ | |
2080 | if (end - begin <= 1) | |
13b3fd9b MS |
2081 | { |
2082 | xfree (buf); | |
2083 | return; | |
2084 | } | |
8dedea02 VP |
2085 | |
2086 | /* Check that either first or the last byte is readable, and give up | |
c378eb4e | 2087 | if not. This heuristic is meant to permit reading accessible memory |
8dedea02 VP |
2088 | at the boundary of accessible region. */ |
2089 | if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
2090 | buf, begin, 1) == 1) | |
2091 | { | |
2092 | forward = 1; | |
2093 | ++current_begin; | |
2094 | } | |
2095 | else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
2096 | buf + (end-begin) - 1, end - 1, 1) == 1) | |
2097 | { | |
2098 | forward = 0; | |
2099 | --current_end; | |
2100 | } | |
2101 | else | |
2102 | { | |
13b3fd9b | 2103 | xfree (buf); |
8dedea02 VP |
2104 | return; |
2105 | } | |
2106 | ||
2107 | /* Loop invariant is that the [current_begin, current_end) was previously | |
2108 | found to be not readable as a whole. | |
2109 | ||
2110 | Note loop condition -- if the range has 1 byte, we can't divide the range | |
2111 | so there's no point trying further. */ | |
2112 | while (current_end - current_begin > 1) | |
2113 | { | |
2114 | ULONGEST first_half_begin, first_half_end; | |
2115 | ULONGEST second_half_begin, second_half_end; | |
2116 | LONGEST xfer; | |
8dedea02 | 2117 | ULONGEST middle = current_begin + (current_end - current_begin)/2; |
f1a507a1 | 2118 | |
8dedea02 VP |
2119 | if (forward) |
2120 | { | |
2121 | first_half_begin = current_begin; | |
2122 | first_half_end = middle; | |
2123 | second_half_begin = middle; | |
2124 | second_half_end = current_end; | |
2125 | } | |
2126 | else | |
2127 | { | |
2128 | first_half_begin = middle; | |
2129 | first_half_end = current_end; | |
2130 | second_half_begin = current_begin; | |
2131 | second_half_end = middle; | |
2132 | } | |
2133 | ||
2134 | xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2135 | buf + (first_half_begin - begin), | |
2136 | first_half_begin, | |
2137 | first_half_end - first_half_begin); | |
2138 | ||
2139 | if (xfer == first_half_end - first_half_begin) | |
2140 | { | |
c378eb4e | 2141 | /* This half reads up fine. So, the error must be in the |
3e43a32a | 2142 | other half. */ |
8dedea02 VP |
2143 | current_begin = second_half_begin; |
2144 | current_end = second_half_end; | |
2145 | } | |
2146 | else | |
2147 | { | |
c378eb4e MS |
2148 | /* This half is not readable. Because we've tried one byte, we |
2149 | know some part of this half if actually redable. Go to the next | |
8dedea02 VP |
2150 | iteration to divide again and try to read. |
2151 | ||
2152 | We don't handle the other half, because this function only tries | |
2153 | to read a single readable subrange. */ | |
2154 | current_begin = first_half_begin; | |
2155 | current_end = first_half_end; | |
2156 | } | |
2157 | } | |
2158 | ||
2159 | if (forward) | |
2160 | { | |
2161 | /* The [begin, current_begin) range has been read. */ | |
2162 | r.begin = begin; | |
2163 | r.end = current_begin; | |
2164 | r.data = buf; | |
2165 | } | |
2166 | else | |
2167 | { | |
2168 | /* The [current_end, end) range has been read. */ | |
2169 | LONGEST rlen = end - current_end; | |
f1a507a1 | 2170 | |
8dedea02 VP |
2171 | r.data = xmalloc (rlen); |
2172 | memcpy (r.data, buf + current_end - begin, rlen); | |
2173 | r.begin = current_end; | |
2174 | r.end = end; | |
2175 | xfree (buf); | |
2176 | } | |
2177 | VEC_safe_push(memory_read_result_s, (*result), &r); | |
2178 | } | |
2179 | ||
2180 | void | |
2181 | free_memory_read_result_vector (void *x) | |
2182 | { | |
2183 | VEC(memory_read_result_s) *v = x; | |
2184 | memory_read_result_s *current; | |
2185 | int ix; | |
2186 | ||
2187 | for (ix = 0; VEC_iterate (memory_read_result_s, v, ix, current); ++ix) | |
2188 | { | |
2189 | xfree (current->data); | |
2190 | } | |
2191 | VEC_free (memory_read_result_s, v); | |
2192 | } | |
2193 | ||
2194 | VEC(memory_read_result_s) * | |
2195 | read_memory_robust (struct target_ops *ops, ULONGEST offset, LONGEST len) | |
2196 | { | |
2197 | VEC(memory_read_result_s) *result = 0; | |
2198 | ||
2199 | LONGEST xfered = 0; | |
d5086790 VP |
2200 | while (xfered < len) |
2201 | { | |
8dedea02 VP |
2202 | struct mem_region *region = lookup_mem_region (offset + xfered); |
2203 | LONGEST rlen; | |
5d502164 | 2204 | |
8dedea02 VP |
2205 | /* If there is no explicit region, a fake one should be created. */ |
2206 | gdb_assert (region); | |
2207 | ||
2208 | if (region->hi == 0) | |
2209 | rlen = len - xfered; | |
2210 | else | |
2211 | rlen = region->hi - offset; | |
2212 | ||
2213 | if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO) | |
d5086790 | 2214 | { |
c378eb4e | 2215 | /* Cannot read this region. Note that we can end up here only |
8dedea02 VP |
2216 | if the region is explicitly marked inaccessible, or |
2217 | 'inaccessible-by-default' is in effect. */ | |
2218 | xfered += rlen; | |
2219 | } | |
2220 | else | |
2221 | { | |
2222 | LONGEST to_read = min (len - xfered, rlen); | |
2223 | gdb_byte *buffer = (gdb_byte *)xmalloc (to_read); | |
2224 | ||
2225 | LONGEST xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2226 | (gdb_byte *) buffer, | |
2227 | offset + xfered, to_read); | |
2228 | /* Call an observer, notifying them of the xfer progress? */ | |
d5086790 | 2229 | if (xfer <= 0) |
d5086790 | 2230 | { |
c378eb4e | 2231 | /* Got an error reading full chunk. See if maybe we can read |
8dedea02 VP |
2232 | some subrange. */ |
2233 | xfree (buffer); | |
3e43a32a MS |
2234 | read_whatever_is_readable (ops, offset + xfered, |
2235 | offset + xfered + to_read, &result); | |
8dedea02 | 2236 | xfered += to_read; |
d5086790 | 2237 | } |
8dedea02 VP |
2238 | else |
2239 | { | |
2240 | struct memory_read_result r; | |
2241 | r.data = buffer; | |
2242 | r.begin = offset + xfered; | |
2243 | r.end = r.begin + xfer; | |
2244 | VEC_safe_push (memory_read_result_s, result, &r); | |
2245 | xfered += xfer; | |
2246 | } | |
2247 | QUIT; | |
d5086790 | 2248 | } |
d5086790 | 2249 | } |
8dedea02 | 2250 | return result; |
d5086790 VP |
2251 | } |
2252 | ||
8dedea02 | 2253 | |
cf7a04e8 DJ |
2254 | /* An alternative to target_write with progress callbacks. */ |
2255 | ||
1e3ff5ad | 2256 | LONGEST |
cf7a04e8 DJ |
2257 | target_write_with_progress (struct target_ops *ops, |
2258 | enum target_object object, | |
2259 | const char *annex, const gdb_byte *buf, | |
2260 | ULONGEST offset, LONGEST len, | |
2261 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad AC |
2262 | { |
2263 | LONGEST xfered = 0; | |
a76d924d DJ |
2264 | |
2265 | /* Give the progress callback a chance to set up. */ | |
2266 | if (progress) | |
2267 | (*progress) (0, baton); | |
2268 | ||
1e3ff5ad AC |
2269 | while (xfered < len) |
2270 | { | |
2271 | LONGEST xfer = target_write_partial (ops, object, annex, | |
fc1a4b47 | 2272 | (gdb_byte *) buf + xfered, |
1e3ff5ad | 2273 | offset + xfered, len - xfered); |
cf7a04e8 | 2274 | |
13547ab6 DJ |
2275 | if (xfer == 0) |
2276 | return xfered; | |
2277 | if (xfer < 0) | |
0088c768 | 2278 | return -1; |
cf7a04e8 DJ |
2279 | |
2280 | if (progress) | |
2281 | (*progress) (xfer, baton); | |
2282 | ||
1e3ff5ad AC |
2283 | xfered += xfer; |
2284 | QUIT; | |
2285 | } | |
2286 | return len; | |
2287 | } | |
2288 | ||
7f79c47e DE |
2289 | /* For docs on target_write see target.h. */ |
2290 | ||
cf7a04e8 DJ |
2291 | LONGEST |
2292 | target_write (struct target_ops *ops, | |
2293 | enum target_object object, | |
2294 | const char *annex, const gdb_byte *buf, | |
2295 | ULONGEST offset, LONGEST len) | |
2296 | { | |
2297 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
2298 | NULL, NULL); | |
2299 | } | |
2300 | ||
159f81f3 DJ |
2301 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
2302 | the size of the transferred data. PADDING additional bytes are | |
2303 | available in *BUF_P. This is a helper function for | |
2304 | target_read_alloc; see the declaration of that function for more | |
2305 | information. */ | |
13547ab6 | 2306 | |
159f81f3 DJ |
2307 | static LONGEST |
2308 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, | |
2309 | const char *annex, gdb_byte **buf_p, int padding) | |
13547ab6 DJ |
2310 | { |
2311 | size_t buf_alloc, buf_pos; | |
2312 | gdb_byte *buf; | |
2313 | LONGEST n; | |
2314 | ||
2315 | /* This function does not have a length parameter; it reads the | |
2316 | entire OBJECT). Also, it doesn't support objects fetched partly | |
2317 | from one target and partly from another (in a different stratum, | |
2318 | e.g. a core file and an executable). Both reasons make it | |
2319 | unsuitable for reading memory. */ | |
2320 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
2321 | ||
2322 | /* Start by reading up to 4K at a time. The target will throttle | |
2323 | this number down if necessary. */ | |
2324 | buf_alloc = 4096; | |
2325 | buf = xmalloc (buf_alloc); | |
2326 | buf_pos = 0; | |
2327 | while (1) | |
2328 | { | |
2329 | n = target_read_partial (ops, object, annex, &buf[buf_pos], | |
159f81f3 | 2330 | buf_pos, buf_alloc - buf_pos - padding); |
13547ab6 DJ |
2331 | if (n < 0) |
2332 | { | |
2333 | /* An error occurred. */ | |
2334 | xfree (buf); | |
2335 | return -1; | |
2336 | } | |
2337 | else if (n == 0) | |
2338 | { | |
2339 | /* Read all there was. */ | |
2340 | if (buf_pos == 0) | |
2341 | xfree (buf); | |
2342 | else | |
2343 | *buf_p = buf; | |
2344 | return buf_pos; | |
2345 | } | |
2346 | ||
2347 | buf_pos += n; | |
2348 | ||
2349 | /* If the buffer is filling up, expand it. */ | |
2350 | if (buf_alloc < buf_pos * 2) | |
2351 | { | |
2352 | buf_alloc *= 2; | |
2353 | buf = xrealloc (buf, buf_alloc); | |
2354 | } | |
2355 | ||
2356 | QUIT; | |
2357 | } | |
2358 | } | |
2359 | ||
159f81f3 DJ |
2360 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
2361 | the size of the transferred data. See the declaration in "target.h" | |
2362 | function for more information about the return value. */ | |
2363 | ||
2364 | LONGEST | |
2365 | target_read_alloc (struct target_ops *ops, enum target_object object, | |
2366 | const char *annex, gdb_byte **buf_p) | |
2367 | { | |
2368 | return target_read_alloc_1 (ops, object, annex, buf_p, 0); | |
2369 | } | |
2370 | ||
2371 | /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and | |
2372 | returned as a string, allocated using xmalloc. If an error occurs | |
2373 | or the transfer is unsupported, NULL is returned. Empty objects | |
2374 | are returned as allocated but empty strings. A warning is issued | |
2375 | if the result contains any embedded NUL bytes. */ | |
2376 | ||
2377 | char * | |
2378 | target_read_stralloc (struct target_ops *ops, enum target_object object, | |
2379 | const char *annex) | |
2380 | { | |
39086a0e PA |
2381 | gdb_byte *buffer; |
2382 | char *bufstr; | |
7313baad | 2383 | LONGEST i, transferred; |
159f81f3 | 2384 | |
39086a0e PA |
2385 | transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1); |
2386 | bufstr = (char *) buffer; | |
159f81f3 DJ |
2387 | |
2388 | if (transferred < 0) | |
2389 | return NULL; | |
2390 | ||
2391 | if (transferred == 0) | |
2392 | return xstrdup (""); | |
2393 | ||
39086a0e | 2394 | bufstr[transferred] = 0; |
7313baad UW |
2395 | |
2396 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
39086a0e PA |
2397 | for (i = strlen (bufstr); i < transferred; i++) |
2398 | if (bufstr[i] != 0) | |
7313baad UW |
2399 | { |
2400 | warning (_("target object %d, annex %s, " | |
2401 | "contained unexpected null characters"), | |
2402 | (int) object, annex ? annex : "(none)"); | |
2403 | break; | |
2404 | } | |
159f81f3 | 2405 | |
39086a0e | 2406 | return bufstr; |
159f81f3 DJ |
2407 | } |
2408 | ||
b6591e8b AC |
2409 | /* Memory transfer methods. */ |
2410 | ||
2411 | void | |
1b0ba102 | 2412 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
2413 | LONGEST len) |
2414 | { | |
07b82ea5 PA |
2415 | /* This method is used to read from an alternate, non-current |
2416 | target. This read must bypass the overlay support (as symbols | |
2417 | don't match this target), and GDB's internal cache (wrong cache | |
2418 | for this target). */ | |
2419 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) | |
b6591e8b AC |
2420 | != len) |
2421 | memory_error (EIO, addr); | |
2422 | } | |
2423 | ||
2424 | ULONGEST | |
5d502164 MS |
2425 | get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr, |
2426 | int len, enum bfd_endian byte_order) | |
b6591e8b | 2427 | { |
f6519ebc | 2428 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
2429 | |
2430 | gdb_assert (len <= sizeof (buf)); | |
2431 | get_target_memory (ops, addr, buf, len); | |
e17a4113 | 2432 | return extract_unsigned_integer (buf, len, byte_order); |
b6591e8b AC |
2433 | } |
2434 | ||
d914c394 SS |
2435 | int |
2436 | target_insert_breakpoint (struct gdbarch *gdbarch, | |
2437 | struct bp_target_info *bp_tgt) | |
2438 | { | |
2439 | if (!may_insert_breakpoints) | |
2440 | { | |
2441 | warning (_("May not insert breakpoints")); | |
2442 | return 1; | |
2443 | } | |
2444 | ||
2445 | return (*current_target.to_insert_breakpoint) (gdbarch, bp_tgt); | |
2446 | } | |
2447 | ||
2448 | int | |
2449 | target_remove_breakpoint (struct gdbarch *gdbarch, | |
2450 | struct bp_target_info *bp_tgt) | |
2451 | { | |
2452 | /* This is kind of a weird case to handle, but the permission might | |
2453 | have been changed after breakpoints were inserted - in which case | |
2454 | we should just take the user literally and assume that any | |
2455 | breakpoints should be left in place. */ | |
2456 | if (!may_insert_breakpoints) | |
2457 | { | |
2458 | warning (_("May not remove breakpoints")); | |
2459 | return 1; | |
2460 | } | |
2461 | ||
2462 | return (*current_target.to_remove_breakpoint) (gdbarch, bp_tgt); | |
2463 | } | |
2464 | ||
c906108c | 2465 | static void |
fba45db2 | 2466 | target_info (char *args, int from_tty) |
c906108c SS |
2467 | { |
2468 | struct target_ops *t; | |
c906108c | 2469 | int has_all_mem = 0; |
c5aa993b | 2470 | |
c906108c | 2471 | if (symfile_objfile != NULL) |
a3f17187 | 2472 | printf_unfiltered (_("Symbols from \"%s\".\n"), symfile_objfile->name); |
c906108c | 2473 | |
258b763a | 2474 | for (t = target_stack; t != NULL; t = t->beneath) |
c906108c | 2475 | { |
c35b1492 | 2476 | if (!(*t->to_has_memory) (t)) |
c906108c SS |
2477 | continue; |
2478 | ||
c5aa993b | 2479 | if ((int) (t->to_stratum) <= (int) dummy_stratum) |
c906108c SS |
2480 | continue; |
2481 | if (has_all_mem) | |
3e43a32a MS |
2482 | printf_unfiltered (_("\tWhile running this, " |
2483 | "GDB does not access memory from...\n")); | |
c5aa993b JM |
2484 | printf_unfiltered ("%s:\n", t->to_longname); |
2485 | (t->to_files_info) (t); | |
c35b1492 | 2486 | has_all_mem = (*t->to_has_all_memory) (t); |
c906108c SS |
2487 | } |
2488 | } | |
2489 | ||
fd79ecee DJ |
2490 | /* This function is called before any new inferior is created, e.g. |
2491 | by running a program, attaching, or connecting to a target. | |
2492 | It cleans up any state from previous invocations which might | |
2493 | change between runs. This is a subset of what target_preopen | |
2494 | resets (things which might change between targets). */ | |
2495 | ||
2496 | void | |
2497 | target_pre_inferior (int from_tty) | |
2498 | { | |
c378eb4e | 2499 | /* Clear out solib state. Otherwise the solib state of the previous |
b9db4ced | 2500 | inferior might have survived and is entirely wrong for the new |
c378eb4e | 2501 | target. This has been observed on GNU/Linux using glibc 2.3. How |
b9db4ced UW |
2502 | to reproduce: |
2503 | ||
2504 | bash$ ./foo& | |
2505 | [1] 4711 | |
2506 | bash$ ./foo& | |
2507 | [1] 4712 | |
2508 | bash$ gdb ./foo | |
2509 | [...] | |
2510 | (gdb) attach 4711 | |
2511 | (gdb) detach | |
2512 | (gdb) attach 4712 | |
2513 | Cannot access memory at address 0xdeadbeef | |
2514 | */ | |
b9db4ced | 2515 | |
50c71eaf PA |
2516 | /* In some OSs, the shared library list is the same/global/shared |
2517 | across inferiors. If code is shared between processes, so are | |
2518 | memory regions and features. */ | |
f5656ead | 2519 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
50c71eaf PA |
2520 | { |
2521 | no_shared_libraries (NULL, from_tty); | |
2522 | ||
2523 | invalidate_target_mem_regions (); | |
424163ea | 2524 | |
50c71eaf PA |
2525 | target_clear_description (); |
2526 | } | |
8ffcbaaf YQ |
2527 | |
2528 | agent_capability_invalidate (); | |
fd79ecee DJ |
2529 | } |
2530 | ||
b8fa0bfa PA |
2531 | /* Callback for iterate_over_inferiors. Gets rid of the given |
2532 | inferior. */ | |
2533 | ||
2534 | static int | |
2535 | dispose_inferior (struct inferior *inf, void *args) | |
2536 | { | |
2537 | struct thread_info *thread; | |
2538 | ||
2539 | thread = any_thread_of_process (inf->pid); | |
2540 | if (thread) | |
2541 | { | |
2542 | switch_to_thread (thread->ptid); | |
2543 | ||
2544 | /* Core inferiors actually should be detached, not killed. */ | |
2545 | if (target_has_execution) | |
2546 | target_kill (); | |
2547 | else | |
2548 | target_detach (NULL, 0); | |
2549 | } | |
2550 | ||
2551 | return 0; | |
2552 | } | |
2553 | ||
c906108c SS |
2554 | /* This is to be called by the open routine before it does |
2555 | anything. */ | |
2556 | ||
2557 | void | |
fba45db2 | 2558 | target_preopen (int from_tty) |
c906108c | 2559 | { |
c5aa993b | 2560 | dont_repeat (); |
c906108c | 2561 | |
b8fa0bfa | 2562 | if (have_inferiors ()) |
c5aa993b | 2563 | { |
adf40b2e | 2564 | if (!from_tty |
b8fa0bfa PA |
2565 | || !have_live_inferiors () |
2566 | || query (_("A program is being debugged already. Kill it? "))) | |
2567 | iterate_over_inferiors (dispose_inferior, NULL); | |
c906108c | 2568 | else |
8a3fe4f8 | 2569 | error (_("Program not killed.")); |
c906108c SS |
2570 | } |
2571 | ||
2572 | /* Calling target_kill may remove the target from the stack. But if | |
2573 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
2574 | /* Leave the exec target, though. The user may be switching from a |
2575 | live process to a core of the same program. */ | |
2576 | pop_all_targets_above (file_stratum, 0); | |
fd79ecee DJ |
2577 | |
2578 | target_pre_inferior (from_tty); | |
c906108c SS |
2579 | } |
2580 | ||
2581 | /* Detach a target after doing deferred register stores. */ | |
2582 | ||
2583 | void | |
fba45db2 | 2584 | target_detach (char *args, int from_tty) |
c906108c | 2585 | { |
136d6dae VP |
2586 | struct target_ops* t; |
2587 | ||
f5656ead | 2588 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
2589 | /* Don't remove global breakpoints here. They're removed on |
2590 | disconnection from the target. */ | |
2591 | ; | |
2592 | else | |
2593 | /* If we're in breakpoints-always-inserted mode, have to remove | |
2594 | them before detaching. */ | |
6c95b8df | 2595 | remove_breakpoints_pid (PIDGET (inferior_ptid)); |
74960c60 | 2596 | |
24291992 PA |
2597 | prepare_for_detach (); |
2598 | ||
136d6dae VP |
2599 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2600 | { | |
2601 | if (t->to_detach != NULL) | |
2602 | { | |
2603 | t->to_detach (t, args, from_tty); | |
947b8855 PA |
2604 | if (targetdebug) |
2605 | fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n", | |
2606 | args, from_tty); | |
136d6dae VP |
2607 | return; |
2608 | } | |
2609 | } | |
2610 | ||
9b20d036 | 2611 | internal_error (__FILE__, __LINE__, _("could not find a target to detach")); |
c906108c SS |
2612 | } |
2613 | ||
6ad8ae5c DJ |
2614 | void |
2615 | target_disconnect (char *args, int from_tty) | |
2616 | { | |
597320e7 DJ |
2617 | struct target_ops *t; |
2618 | ||
50c71eaf PA |
2619 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
2620 | are global across processes, we have to remove them before | |
2621 | disconnecting. */ | |
74960c60 VP |
2622 | remove_breakpoints (); |
2623 | ||
597320e7 DJ |
2624 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2625 | if (t->to_disconnect != NULL) | |
2626 | { | |
2627 | if (targetdebug) | |
2628 | fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n", | |
2629 | args, from_tty); | |
2630 | t->to_disconnect (t, args, from_tty); | |
2631 | return; | |
2632 | } | |
2633 | ||
2634 | tcomplain (); | |
6ad8ae5c DJ |
2635 | } |
2636 | ||
117de6a9 | 2637 | ptid_t |
47608cb1 | 2638 | target_wait (ptid_t ptid, struct target_waitstatus *status, int options) |
117de6a9 PA |
2639 | { |
2640 | struct target_ops *t; | |
2641 | ||
2642 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2643 | { | |
2644 | if (t->to_wait != NULL) | |
2645 | { | |
47608cb1 | 2646 | ptid_t retval = (*t->to_wait) (t, ptid, status, options); |
117de6a9 PA |
2647 | |
2648 | if (targetdebug) | |
2649 | { | |
2650 | char *status_string; | |
09826ec5 | 2651 | char *options_string; |
117de6a9 PA |
2652 | |
2653 | status_string = target_waitstatus_to_string (status); | |
09826ec5 | 2654 | options_string = target_options_to_string (options); |
117de6a9 | 2655 | fprintf_unfiltered (gdb_stdlog, |
09826ec5 PA |
2656 | "target_wait (%d, status, options={%s})" |
2657 | " = %d, %s\n", | |
2658 | PIDGET (ptid), options_string, | |
2659 | PIDGET (retval), status_string); | |
117de6a9 | 2660 | xfree (status_string); |
09826ec5 | 2661 | xfree (options_string); |
117de6a9 PA |
2662 | } |
2663 | ||
2664 | return retval; | |
2665 | } | |
2666 | } | |
2667 | ||
2668 | noprocess (); | |
2669 | } | |
2670 | ||
2671 | char * | |
2672 | target_pid_to_str (ptid_t ptid) | |
2673 | { | |
2674 | struct target_ops *t; | |
2675 | ||
2676 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2677 | { | |
2678 | if (t->to_pid_to_str != NULL) | |
2679 | return (*t->to_pid_to_str) (t, ptid); | |
2680 | } | |
2681 | ||
2682 | return normal_pid_to_str (ptid); | |
2683 | } | |
2684 | ||
4694da01 TT |
2685 | char * |
2686 | target_thread_name (struct thread_info *info) | |
2687 | { | |
2688 | struct target_ops *t; | |
2689 | ||
2690 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2691 | { | |
2692 | if (t->to_thread_name != NULL) | |
2693 | return (*t->to_thread_name) (info); | |
2694 | } | |
2695 | ||
2696 | return NULL; | |
2697 | } | |
2698 | ||
e1ac3328 | 2699 | void |
2ea28649 | 2700 | target_resume (ptid_t ptid, int step, enum gdb_signal signal) |
e1ac3328 | 2701 | { |
28439f5e PA |
2702 | struct target_ops *t; |
2703 | ||
4e5d721f | 2704 | target_dcache_invalidate (); |
28439f5e PA |
2705 | |
2706 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2707 | { | |
2708 | if (t->to_resume != NULL) | |
2709 | { | |
2710 | t->to_resume (t, ptid, step, signal); | |
2711 | if (targetdebug) | |
2712 | fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n", | |
2713 | PIDGET (ptid), | |
2714 | step ? "step" : "continue", | |
2ea28649 | 2715 | gdb_signal_to_name (signal)); |
28439f5e | 2716 | |
e66408ed | 2717 | registers_changed_ptid (ptid); |
28439f5e PA |
2718 | set_executing (ptid, 1); |
2719 | set_running (ptid, 1); | |
edb3359d | 2720 | clear_inline_frame_state (ptid); |
28439f5e PA |
2721 | return; |
2722 | } | |
2723 | } | |
2724 | ||
2725 | noprocess (); | |
e1ac3328 | 2726 | } |
2455069d UW |
2727 | |
2728 | void | |
2729 | target_pass_signals (int numsigs, unsigned char *pass_signals) | |
2730 | { | |
2731 | struct target_ops *t; | |
2732 | ||
2733 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2734 | { | |
2735 | if (t->to_pass_signals != NULL) | |
2736 | { | |
2737 | if (targetdebug) | |
2738 | { | |
2739 | int i; | |
2740 | ||
2741 | fprintf_unfiltered (gdb_stdlog, "target_pass_signals (%d, {", | |
2742 | numsigs); | |
2743 | ||
2744 | for (i = 0; i < numsigs; i++) | |
2745 | if (pass_signals[i]) | |
2746 | fprintf_unfiltered (gdb_stdlog, " %s", | |
2ea28649 | 2747 | gdb_signal_to_name (i)); |
2455069d UW |
2748 | |
2749 | fprintf_unfiltered (gdb_stdlog, " })\n"); | |
2750 | } | |
2751 | ||
2752 | (*t->to_pass_signals) (numsigs, pass_signals); | |
2753 | return; | |
2754 | } | |
2755 | } | |
2756 | } | |
2757 | ||
9b224c5e PA |
2758 | void |
2759 | target_program_signals (int numsigs, unsigned char *program_signals) | |
2760 | { | |
2761 | struct target_ops *t; | |
2762 | ||
2763 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2764 | { | |
2765 | if (t->to_program_signals != NULL) | |
2766 | { | |
2767 | if (targetdebug) | |
2768 | { | |
2769 | int i; | |
2770 | ||
2771 | fprintf_unfiltered (gdb_stdlog, "target_program_signals (%d, {", | |
2772 | numsigs); | |
2773 | ||
2774 | for (i = 0; i < numsigs; i++) | |
2775 | if (program_signals[i]) | |
2776 | fprintf_unfiltered (gdb_stdlog, " %s", | |
2ea28649 | 2777 | gdb_signal_to_name (i)); |
9b224c5e PA |
2778 | |
2779 | fprintf_unfiltered (gdb_stdlog, " })\n"); | |
2780 | } | |
2781 | ||
2782 | (*t->to_program_signals) (numsigs, program_signals); | |
2783 | return; | |
2784 | } | |
2785 | } | |
2786 | } | |
2787 | ||
ee057212 DJ |
2788 | /* Look through the list of possible targets for a target that can |
2789 | follow forks. */ | |
2790 | ||
2791 | int | |
2792 | target_follow_fork (int follow_child) | |
2793 | { | |
2794 | struct target_ops *t; | |
2795 | ||
2796 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2797 | { | |
2798 | if (t->to_follow_fork != NULL) | |
2799 | { | |
2800 | int retval = t->to_follow_fork (t, follow_child); | |
5d502164 | 2801 | |
ee057212 DJ |
2802 | if (targetdebug) |
2803 | fprintf_unfiltered (gdb_stdlog, "target_follow_fork (%d) = %d\n", | |
2804 | follow_child, retval); | |
2805 | return retval; | |
2806 | } | |
2807 | } | |
2808 | ||
2809 | /* Some target returned a fork event, but did not know how to follow it. */ | |
2810 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 2811 | _("could not find a target to follow fork")); |
ee057212 DJ |
2812 | } |
2813 | ||
136d6dae VP |
2814 | void |
2815 | target_mourn_inferior (void) | |
2816 | { | |
2817 | struct target_ops *t; | |
5d502164 | 2818 | |
136d6dae VP |
2819 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2820 | { | |
2821 | if (t->to_mourn_inferior != NULL) | |
2822 | { | |
2823 | t->to_mourn_inferior (t); | |
947b8855 PA |
2824 | if (targetdebug) |
2825 | fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n"); | |
efbd6e75 JB |
2826 | |
2827 | /* We no longer need to keep handles on any of the object files. | |
2828 | Make sure to release them to avoid unnecessarily locking any | |
2829 | of them while we're not actually debugging. */ | |
2830 | bfd_cache_close_all (); | |
2831 | ||
136d6dae VP |
2832 | return; |
2833 | } | |
2834 | } | |
2835 | ||
2836 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 2837 | _("could not find a target to follow mourn inferior")); |
136d6dae VP |
2838 | } |
2839 | ||
424163ea DJ |
2840 | /* Look for a target which can describe architectural features, starting |
2841 | from TARGET. If we find one, return its description. */ | |
2842 | ||
2843 | const struct target_desc * | |
2844 | target_read_description (struct target_ops *target) | |
2845 | { | |
2846 | struct target_ops *t; | |
2847 | ||
2848 | for (t = target; t != NULL; t = t->beneath) | |
2849 | if (t->to_read_description != NULL) | |
2850 | { | |
2851 | const struct target_desc *tdesc; | |
2852 | ||
2853 | tdesc = t->to_read_description (t); | |
2854 | if (tdesc) | |
2855 | return tdesc; | |
2856 | } | |
2857 | ||
2858 | return NULL; | |
2859 | } | |
2860 | ||
08388c79 DE |
2861 | /* The default implementation of to_search_memory. |
2862 | This implements a basic search of memory, reading target memory and | |
2863 | performing the search here (as opposed to performing the search in on the | |
2864 | target side with, for example, gdbserver). */ | |
2865 | ||
2866 | int | |
2867 | simple_search_memory (struct target_ops *ops, | |
2868 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2869 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2870 | CORE_ADDR *found_addrp) | |
2871 | { | |
2872 | /* NOTE: also defined in find.c testcase. */ | |
2873 | #define SEARCH_CHUNK_SIZE 16000 | |
2874 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
2875 | /* Buffer to hold memory contents for searching. */ | |
2876 | gdb_byte *search_buf; | |
2877 | unsigned search_buf_size; | |
2878 | struct cleanup *old_cleanups; | |
2879 | ||
2880 | search_buf_size = chunk_size + pattern_len - 1; | |
2881 | ||
2882 | /* No point in trying to allocate a buffer larger than the search space. */ | |
2883 | if (search_space_len < search_buf_size) | |
2884 | search_buf_size = search_space_len; | |
2885 | ||
2886 | search_buf = malloc (search_buf_size); | |
2887 | if (search_buf == NULL) | |
5e1471f5 | 2888 | error (_("Unable to allocate memory to perform the search.")); |
08388c79 DE |
2889 | old_cleanups = make_cleanup (free_current_contents, &search_buf); |
2890 | ||
2891 | /* Prime the search buffer. */ | |
2892 | ||
2893 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2894 | search_buf, start_addr, search_buf_size) != search_buf_size) | |
2895 | { | |
b3dc46ff AB |
2896 | warning (_("Unable to access %s bytes of target " |
2897 | "memory at %s, halting search."), | |
2898 | pulongest (search_buf_size), hex_string (start_addr)); | |
08388c79 DE |
2899 | do_cleanups (old_cleanups); |
2900 | return -1; | |
2901 | } | |
2902 | ||
2903 | /* Perform the search. | |
2904 | ||
2905 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
2906 | When we've scanned N bytes we copy the trailing bytes to the start and | |
2907 | read in another N bytes. */ | |
2908 | ||
2909 | while (search_space_len >= pattern_len) | |
2910 | { | |
2911 | gdb_byte *found_ptr; | |
2912 | unsigned nr_search_bytes = min (search_space_len, search_buf_size); | |
2913 | ||
2914 | found_ptr = memmem (search_buf, nr_search_bytes, | |
2915 | pattern, pattern_len); | |
2916 | ||
2917 | if (found_ptr != NULL) | |
2918 | { | |
2919 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
5d502164 | 2920 | |
08388c79 DE |
2921 | *found_addrp = found_addr; |
2922 | do_cleanups (old_cleanups); | |
2923 | return 1; | |
2924 | } | |
2925 | ||
2926 | /* Not found in this chunk, skip to next chunk. */ | |
2927 | ||
2928 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
2929 | if (search_space_len >= chunk_size) | |
2930 | search_space_len -= chunk_size; | |
2931 | else | |
2932 | search_space_len = 0; | |
2933 | ||
2934 | if (search_space_len >= pattern_len) | |
2935 | { | |
2936 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 2937 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
2938 | int nr_to_read; |
2939 | ||
2940 | /* Copy the trailing part of the previous iteration to the front | |
2941 | of the buffer for the next iteration. */ | |
2942 | gdb_assert (keep_len == pattern_len - 1); | |
2943 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
2944 | ||
2945 | nr_to_read = min (search_space_len - keep_len, chunk_size); | |
2946 | ||
2947 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2948 | search_buf + keep_len, read_addr, | |
2949 | nr_to_read) != nr_to_read) | |
2950 | { | |
b3dc46ff | 2951 | warning (_("Unable to access %s bytes of target " |
9b20d036 | 2952 | "memory at %s, halting search."), |
b3dc46ff | 2953 | plongest (nr_to_read), |
08388c79 DE |
2954 | hex_string (read_addr)); |
2955 | do_cleanups (old_cleanups); | |
2956 | return -1; | |
2957 | } | |
2958 | ||
2959 | start_addr += chunk_size; | |
2960 | } | |
2961 | } | |
2962 | ||
2963 | /* Not found. */ | |
2964 | ||
2965 | do_cleanups (old_cleanups); | |
2966 | return 0; | |
2967 | } | |
2968 | ||
2969 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the | |
2970 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2971 | ||
2972 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2973 | requiring halting of the search (e.g. memory read error). | |
2974 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2975 | ||
2976 | int | |
2977 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2978 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2979 | CORE_ADDR *found_addrp) | |
2980 | { | |
2981 | struct target_ops *t; | |
2982 | int found; | |
2983 | ||
2984 | /* We don't use INHERIT to set current_target.to_search_memory, | |
2985 | so we have to scan the target stack and handle targetdebug | |
2986 | ourselves. */ | |
2987 | ||
2988 | if (targetdebug) | |
2989 | fprintf_unfiltered (gdb_stdlog, "target_search_memory (%s, ...)\n", | |
2990 | hex_string (start_addr)); | |
2991 | ||
2992 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2993 | if (t->to_search_memory != NULL) | |
2994 | break; | |
2995 | ||
2996 | if (t != NULL) | |
2997 | { | |
2998 | found = t->to_search_memory (t, start_addr, search_space_len, | |
2999 | pattern, pattern_len, found_addrp); | |
3000 | } | |
3001 | else | |
3002 | { | |
3003 | /* If a special version of to_search_memory isn't available, use the | |
3004 | simple version. */ | |
c35b1492 | 3005 | found = simple_search_memory (current_target.beneath, |
08388c79 DE |
3006 | start_addr, search_space_len, |
3007 | pattern, pattern_len, found_addrp); | |
3008 | } | |
3009 | ||
3010 | if (targetdebug) | |
3011 | fprintf_unfiltered (gdb_stdlog, " = %d\n", found); | |
3012 | ||
3013 | return found; | |
3014 | } | |
3015 | ||
8edfe269 DJ |
3016 | /* Look through the currently pushed targets. If none of them will |
3017 | be able to restart the currently running process, issue an error | |
3018 | message. */ | |
3019 | ||
3020 | void | |
3021 | target_require_runnable (void) | |
3022 | { | |
3023 | struct target_ops *t; | |
3024 | ||
3025 | for (t = target_stack; t != NULL; t = t->beneath) | |
3026 | { | |
3027 | /* If this target knows how to create a new program, then | |
3028 | assume we will still be able to after killing the current | |
3029 | one. Either killing and mourning will not pop T, or else | |
3030 | find_default_run_target will find it again. */ | |
3031 | if (t->to_create_inferior != NULL) | |
3032 | return; | |
3033 | ||
3034 | /* Do not worry about thread_stratum targets that can not | |
3035 | create inferiors. Assume they will be pushed again if | |
3036 | necessary, and continue to the process_stratum. */ | |
85e747d2 UW |
3037 | if (t->to_stratum == thread_stratum |
3038 | || t->to_stratum == arch_stratum) | |
8edfe269 DJ |
3039 | continue; |
3040 | ||
3e43a32a MS |
3041 | error (_("The \"%s\" target does not support \"run\". " |
3042 | "Try \"help target\" or \"continue\"."), | |
8edfe269 DJ |
3043 | t->to_shortname); |
3044 | } | |
3045 | ||
3046 | /* This function is only called if the target is running. In that | |
3047 | case there should have been a process_stratum target and it | |
c378eb4e | 3048 | should either know how to create inferiors, or not... */ |
9b20d036 | 3049 | internal_error (__FILE__, __LINE__, _("No targets found")); |
8edfe269 DJ |
3050 | } |
3051 | ||
c906108c SS |
3052 | /* Look through the list of possible targets for a target that can |
3053 | execute a run or attach command without any other data. This is | |
3054 | used to locate the default process stratum. | |
3055 | ||
5f667f2d PA |
3056 | If DO_MESG is not NULL, the result is always valid (error() is |
3057 | called for errors); else, return NULL on error. */ | |
c906108c SS |
3058 | |
3059 | static struct target_ops * | |
fba45db2 | 3060 | find_default_run_target (char *do_mesg) |
c906108c SS |
3061 | { |
3062 | struct target_ops **t; | |
3063 | struct target_ops *runable = NULL; | |
3064 | int count; | |
3065 | ||
3066 | count = 0; | |
3067 | ||
3068 | for (t = target_structs; t < target_structs + target_struct_size; | |
3069 | ++t) | |
3070 | { | |
c5aa993b | 3071 | if ((*t)->to_can_run && target_can_run (*t)) |
c906108c SS |
3072 | { |
3073 | runable = *t; | |
3074 | ++count; | |
3075 | } | |
3076 | } | |
3077 | ||
3078 | if (count != 1) | |
5f667f2d PA |
3079 | { |
3080 | if (do_mesg) | |
3081 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
3082 | else | |
3083 | return NULL; | |
3084 | } | |
c906108c SS |
3085 | |
3086 | return runable; | |
3087 | } | |
3088 | ||
3089 | void | |
136d6dae | 3090 | find_default_attach (struct target_ops *ops, char *args, int from_tty) |
c906108c SS |
3091 | { |
3092 | struct target_ops *t; | |
3093 | ||
c5aa993b | 3094 | t = find_default_run_target ("attach"); |
136d6dae | 3095 | (t->to_attach) (t, args, from_tty); |
c906108c SS |
3096 | return; |
3097 | } | |
3098 | ||
c906108c | 3099 | void |
136d6dae VP |
3100 | find_default_create_inferior (struct target_ops *ops, |
3101 | char *exec_file, char *allargs, char **env, | |
c27cda74 | 3102 | int from_tty) |
c906108c SS |
3103 | { |
3104 | struct target_ops *t; | |
3105 | ||
c5aa993b | 3106 | t = find_default_run_target ("run"); |
136d6dae | 3107 | (t->to_create_inferior) (t, exec_file, allargs, env, from_tty); |
c906108c SS |
3108 | return; |
3109 | } | |
3110 | ||
2c0b251b | 3111 | static int |
b84876c2 PA |
3112 | find_default_can_async_p (void) |
3113 | { | |
3114 | struct target_ops *t; | |
3115 | ||
5f667f2d PA |
3116 | /* This may be called before the target is pushed on the stack; |
3117 | look for the default process stratum. If there's none, gdb isn't | |
3118 | configured with a native debugger, and target remote isn't | |
3119 | connected yet. */ | |
3120 | t = find_default_run_target (NULL); | |
3121 | if (t && t->to_can_async_p) | |
b84876c2 PA |
3122 | return (t->to_can_async_p) (); |
3123 | return 0; | |
3124 | } | |
3125 | ||
2c0b251b | 3126 | static int |
b84876c2 PA |
3127 | find_default_is_async_p (void) |
3128 | { | |
3129 | struct target_ops *t; | |
3130 | ||
5f667f2d PA |
3131 | /* This may be called before the target is pushed on the stack; |
3132 | look for the default process stratum. If there's none, gdb isn't | |
3133 | configured with a native debugger, and target remote isn't | |
3134 | connected yet. */ | |
3135 | t = find_default_run_target (NULL); | |
3136 | if (t && t->to_is_async_p) | |
b84876c2 PA |
3137 | return (t->to_is_async_p) (); |
3138 | return 0; | |
3139 | } | |
3140 | ||
2c0b251b | 3141 | static int |
9908b566 VP |
3142 | find_default_supports_non_stop (void) |
3143 | { | |
3144 | struct target_ops *t; | |
3145 | ||
3146 | t = find_default_run_target (NULL); | |
3147 | if (t && t->to_supports_non_stop) | |
3148 | return (t->to_supports_non_stop) (); | |
3149 | return 0; | |
3150 | } | |
3151 | ||
3152 | int | |
2c0b251b | 3153 | target_supports_non_stop (void) |
9908b566 VP |
3154 | { |
3155 | struct target_ops *t; | |
5d502164 | 3156 | |
9908b566 VP |
3157 | for (t = ¤t_target; t != NULL; t = t->beneath) |
3158 | if (t->to_supports_non_stop) | |
3159 | return t->to_supports_non_stop (); | |
3160 | ||
3161 | return 0; | |
3162 | } | |
3163 | ||
145b16a9 UW |
3164 | /* Implement the "info proc" command. */ |
3165 | ||
451b7c33 | 3166 | int |
145b16a9 UW |
3167 | target_info_proc (char *args, enum info_proc_what what) |
3168 | { | |
3169 | struct target_ops *t; | |
3170 | ||
3171 | /* If we're already connected to something that can get us OS | |
3172 | related data, use it. Otherwise, try using the native | |
3173 | target. */ | |
3174 | if (current_target.to_stratum >= process_stratum) | |
3175 | t = current_target.beneath; | |
3176 | else | |
3177 | t = find_default_run_target (NULL); | |
3178 | ||
3179 | for (; t != NULL; t = t->beneath) | |
3180 | { | |
3181 | if (t->to_info_proc != NULL) | |
3182 | { | |
3183 | t->to_info_proc (t, args, what); | |
3184 | ||
3185 | if (targetdebug) | |
3186 | fprintf_unfiltered (gdb_stdlog, | |
3187 | "target_info_proc (\"%s\", %d)\n", args, what); | |
3188 | ||
451b7c33 | 3189 | return 1; |
145b16a9 UW |
3190 | } |
3191 | } | |
3192 | ||
451b7c33 | 3193 | return 0; |
145b16a9 UW |
3194 | } |
3195 | ||
03583c20 UW |
3196 | static int |
3197 | find_default_supports_disable_randomization (void) | |
3198 | { | |
3199 | struct target_ops *t; | |
3200 | ||
3201 | t = find_default_run_target (NULL); | |
3202 | if (t && t->to_supports_disable_randomization) | |
3203 | return (t->to_supports_disable_randomization) (); | |
3204 | return 0; | |
3205 | } | |
3206 | ||
3207 | int | |
3208 | target_supports_disable_randomization (void) | |
3209 | { | |
3210 | struct target_ops *t; | |
3211 | ||
3212 | for (t = ¤t_target; t != NULL; t = t->beneath) | |
3213 | if (t->to_supports_disable_randomization) | |
3214 | return t->to_supports_disable_randomization (); | |
3215 | ||
3216 | return 0; | |
3217 | } | |
9908b566 | 3218 | |
07e059b5 VP |
3219 | char * |
3220 | target_get_osdata (const char *type) | |
3221 | { | |
07e059b5 VP |
3222 | struct target_ops *t; |
3223 | ||
739ef7fb PA |
3224 | /* If we're already connected to something that can get us OS |
3225 | related data, use it. Otherwise, try using the native | |
3226 | target. */ | |
3227 | if (current_target.to_stratum >= process_stratum) | |
6d097e65 | 3228 | t = current_target.beneath; |
739ef7fb PA |
3229 | else |
3230 | t = find_default_run_target ("get OS data"); | |
07e059b5 VP |
3231 | |
3232 | if (!t) | |
3233 | return NULL; | |
3234 | ||
6d097e65 | 3235 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
3236 | } |
3237 | ||
6c95b8df PA |
3238 | /* Determine the current address space of thread PTID. */ |
3239 | ||
3240 | struct address_space * | |
3241 | target_thread_address_space (ptid_t ptid) | |
3242 | { | |
c0694254 | 3243 | struct address_space *aspace; |
6c95b8df | 3244 | struct inferior *inf; |
c0694254 PA |
3245 | struct target_ops *t; |
3246 | ||
3247 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3248 | { | |
3249 | if (t->to_thread_address_space != NULL) | |
3250 | { | |
3251 | aspace = t->to_thread_address_space (t, ptid); | |
3252 | gdb_assert (aspace); | |
6c95b8df | 3253 | |
c0694254 PA |
3254 | if (targetdebug) |
3255 | fprintf_unfiltered (gdb_stdlog, | |
3256 | "target_thread_address_space (%s) = %d\n", | |
3257 | target_pid_to_str (ptid), | |
3258 | address_space_num (aspace)); | |
3259 | return aspace; | |
3260 | } | |
3261 | } | |
6c95b8df PA |
3262 | |
3263 | /* Fall-back to the "main" address space of the inferior. */ | |
3264 | inf = find_inferior_pid (ptid_get_pid (ptid)); | |
3265 | ||
3266 | if (inf == NULL || inf->aspace == NULL) | |
3e43a32a | 3267 | internal_error (__FILE__, __LINE__, |
9b20d036 MS |
3268 | _("Can't determine the current " |
3269 | "address space of thread %s\n"), | |
6c95b8df PA |
3270 | target_pid_to_str (ptid)); |
3271 | ||
3272 | return inf->aspace; | |
3273 | } | |
3274 | ||
7313baad UW |
3275 | |
3276 | /* Target file operations. */ | |
3277 | ||
3278 | static struct target_ops * | |
3279 | default_fileio_target (void) | |
3280 | { | |
3281 | /* If we're already connected to something that can perform | |
3282 | file I/O, use it. Otherwise, try using the native target. */ | |
3283 | if (current_target.to_stratum >= process_stratum) | |
3284 | return current_target.beneath; | |
3285 | else | |
3286 | return find_default_run_target ("file I/O"); | |
3287 | } | |
3288 | ||
3289 | /* Open FILENAME on the target, using FLAGS and MODE. Return a | |
3290 | target file descriptor, or -1 if an error occurs (and set | |
3291 | *TARGET_ERRNO). */ | |
3292 | int | |
3293 | target_fileio_open (const char *filename, int flags, int mode, | |
3294 | int *target_errno) | |
3295 | { | |
3296 | struct target_ops *t; | |
3297 | ||
3298 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3299 | { | |
3300 | if (t->to_fileio_open != NULL) | |
3301 | { | |
3302 | int fd = t->to_fileio_open (filename, flags, mode, target_errno); | |
3303 | ||
3304 | if (targetdebug) | |
3305 | fprintf_unfiltered (gdb_stdlog, | |
3306 | "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n", | |
3307 | filename, flags, mode, | |
3308 | fd, fd != -1 ? 0 : *target_errno); | |
3309 | return fd; | |
3310 | } | |
3311 | } | |
3312 | ||
3313 | *target_errno = FILEIO_ENOSYS; | |
3314 | return -1; | |
3315 | } | |
3316 | ||
3317 | /* Write up to LEN bytes from WRITE_BUF to FD on the target. | |
3318 | Return the number of bytes written, or -1 if an error occurs | |
3319 | (and set *TARGET_ERRNO). */ | |
3320 | int | |
3321 | target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
3322 | ULONGEST offset, int *target_errno) | |
3323 | { | |
3324 | struct target_ops *t; | |
3325 | ||
3326 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3327 | { | |
3328 | if (t->to_fileio_pwrite != NULL) | |
3329 | { | |
3330 | int ret = t->to_fileio_pwrite (fd, write_buf, len, offset, | |
3331 | target_errno); | |
3332 | ||
3333 | if (targetdebug) | |
3334 | fprintf_unfiltered (gdb_stdlog, | |
a71b5a38 | 3335 | "target_fileio_pwrite (%d,...,%d,%s) " |
7313baad | 3336 | "= %d (%d)\n", |
a71b5a38 | 3337 | fd, len, pulongest (offset), |
7313baad UW |
3338 | ret, ret != -1 ? 0 : *target_errno); |
3339 | return ret; | |
3340 | } | |
3341 | } | |
3342 | ||
3343 | *target_errno = FILEIO_ENOSYS; | |
3344 | return -1; | |
3345 | } | |
3346 | ||
3347 | /* Read up to LEN bytes FD on the target into READ_BUF. | |
3348 | Return the number of bytes read, or -1 if an error occurs | |
3349 | (and set *TARGET_ERRNO). */ | |
3350 | int | |
3351 | target_fileio_pread (int fd, gdb_byte *read_buf, int len, | |
3352 | ULONGEST offset, int *target_errno) | |
3353 | { | |
3354 | struct target_ops *t; | |
3355 | ||
3356 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3357 | { | |
3358 | if (t->to_fileio_pread != NULL) | |
3359 | { | |
3360 | int ret = t->to_fileio_pread (fd, read_buf, len, offset, | |
3361 | target_errno); | |
3362 | ||
3363 | if (targetdebug) | |
3364 | fprintf_unfiltered (gdb_stdlog, | |
a71b5a38 | 3365 | "target_fileio_pread (%d,...,%d,%s) " |
7313baad | 3366 | "= %d (%d)\n", |
a71b5a38 | 3367 | fd, len, pulongest (offset), |
7313baad UW |
3368 | ret, ret != -1 ? 0 : *target_errno); |
3369 | return ret; | |
3370 | } | |
3371 | } | |
3372 | ||
3373 | *target_errno = FILEIO_ENOSYS; | |
3374 | return -1; | |
3375 | } | |
3376 | ||
3377 | /* Close FD on the target. Return 0, or -1 if an error occurs | |
3378 | (and set *TARGET_ERRNO). */ | |
3379 | int | |
3380 | target_fileio_close (int fd, int *target_errno) | |
3381 | { | |
3382 | struct target_ops *t; | |
3383 | ||
3384 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3385 | { | |
3386 | if (t->to_fileio_close != NULL) | |
3387 | { | |
3388 | int ret = t->to_fileio_close (fd, target_errno); | |
3389 | ||
3390 | if (targetdebug) | |
3391 | fprintf_unfiltered (gdb_stdlog, | |
3392 | "target_fileio_close (%d) = %d (%d)\n", | |
3393 | fd, ret, ret != -1 ? 0 : *target_errno); | |
3394 | return ret; | |
3395 | } | |
3396 | } | |
3397 | ||
3398 | *target_errno = FILEIO_ENOSYS; | |
3399 | return -1; | |
3400 | } | |
3401 | ||
3402 | /* Unlink FILENAME on the target. Return 0, or -1 if an error | |
3403 | occurs (and set *TARGET_ERRNO). */ | |
3404 | int | |
3405 | target_fileio_unlink (const char *filename, int *target_errno) | |
3406 | { | |
3407 | struct target_ops *t; | |
3408 | ||
3409 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3410 | { | |
3411 | if (t->to_fileio_unlink != NULL) | |
3412 | { | |
3413 | int ret = t->to_fileio_unlink (filename, target_errno); | |
3414 | ||
3415 | if (targetdebug) | |
3416 | fprintf_unfiltered (gdb_stdlog, | |
3417 | "target_fileio_unlink (%s) = %d (%d)\n", | |
3418 | filename, ret, ret != -1 ? 0 : *target_errno); | |
3419 | return ret; | |
3420 | } | |
3421 | } | |
3422 | ||
3423 | *target_errno = FILEIO_ENOSYS; | |
3424 | return -1; | |
3425 | } | |
3426 | ||
b9e7b9c3 UW |
3427 | /* Read value of symbolic link FILENAME on the target. Return a |
3428 | null-terminated string allocated via xmalloc, or NULL if an error | |
3429 | occurs (and set *TARGET_ERRNO). */ | |
3430 | char * | |
3431 | target_fileio_readlink (const char *filename, int *target_errno) | |
3432 | { | |
3433 | struct target_ops *t; | |
3434 | ||
3435 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3436 | { | |
3437 | if (t->to_fileio_readlink != NULL) | |
3438 | { | |
3439 | char *ret = t->to_fileio_readlink (filename, target_errno); | |
3440 | ||
3441 | if (targetdebug) | |
3442 | fprintf_unfiltered (gdb_stdlog, | |
3443 | "target_fileio_readlink (%s) = %s (%d)\n", | |
3444 | filename, ret? ret : "(nil)", | |
3445 | ret? 0 : *target_errno); | |
3446 | return ret; | |
3447 | } | |
3448 | } | |
3449 | ||
3450 | *target_errno = FILEIO_ENOSYS; | |
3451 | return NULL; | |
3452 | } | |
3453 | ||
7313baad UW |
3454 | static void |
3455 | target_fileio_close_cleanup (void *opaque) | |
3456 | { | |
3457 | int fd = *(int *) opaque; | |
3458 | int target_errno; | |
3459 | ||
3460 | target_fileio_close (fd, &target_errno); | |
3461 | } | |
3462 | ||
3463 | /* Read target file FILENAME. Store the result in *BUF_P and | |
3464 | return the size of the transferred data. PADDING additional bytes are | |
3465 | available in *BUF_P. This is a helper function for | |
3466 | target_fileio_read_alloc; see the declaration of that function for more | |
3467 | information. */ | |
3468 | ||
3469 | static LONGEST | |
3470 | target_fileio_read_alloc_1 (const char *filename, | |
3471 | gdb_byte **buf_p, int padding) | |
3472 | { | |
3473 | struct cleanup *close_cleanup; | |
3474 | size_t buf_alloc, buf_pos; | |
3475 | gdb_byte *buf; | |
3476 | LONGEST n; | |
3477 | int fd; | |
3478 | int target_errno; | |
3479 | ||
3480 | fd = target_fileio_open (filename, FILEIO_O_RDONLY, 0700, &target_errno); | |
3481 | if (fd == -1) | |
3482 | return -1; | |
3483 | ||
3484 | close_cleanup = make_cleanup (target_fileio_close_cleanup, &fd); | |
3485 | ||
3486 | /* Start by reading up to 4K at a time. The target will throttle | |
3487 | this number down if necessary. */ | |
3488 | buf_alloc = 4096; | |
3489 | buf = xmalloc (buf_alloc); | |
3490 | buf_pos = 0; | |
3491 | while (1) | |
3492 | { | |
3493 | n = target_fileio_pread (fd, &buf[buf_pos], | |
3494 | buf_alloc - buf_pos - padding, buf_pos, | |
3495 | &target_errno); | |
3496 | if (n < 0) | |
3497 | { | |
3498 | /* An error occurred. */ | |
3499 | do_cleanups (close_cleanup); | |
3500 | xfree (buf); | |
3501 | return -1; | |
3502 | } | |
3503 | else if (n == 0) | |
3504 | { | |
3505 | /* Read all there was. */ | |
3506 | do_cleanups (close_cleanup); | |
3507 | if (buf_pos == 0) | |
3508 | xfree (buf); | |
3509 | else | |
3510 | *buf_p = buf; | |
3511 | return buf_pos; | |
3512 | } | |
3513 | ||
3514 | buf_pos += n; | |
3515 | ||
3516 | /* If the buffer is filling up, expand it. */ | |
3517 | if (buf_alloc < buf_pos * 2) | |
3518 | { | |
3519 | buf_alloc *= 2; | |
3520 | buf = xrealloc (buf, buf_alloc); | |
3521 | } | |
3522 | ||
3523 | QUIT; | |
3524 | } | |
3525 | } | |
3526 | ||
3527 | /* Read target file FILENAME. Store the result in *BUF_P and return | |
3528 | the size of the transferred data. See the declaration in "target.h" | |
3529 | function for more information about the return value. */ | |
3530 | ||
3531 | LONGEST | |
3532 | target_fileio_read_alloc (const char *filename, gdb_byte **buf_p) | |
3533 | { | |
3534 | return target_fileio_read_alloc_1 (filename, buf_p, 0); | |
3535 | } | |
3536 | ||
3537 | /* Read target file FILENAME. The result is NUL-terminated and | |
3538 | returned as a string, allocated using xmalloc. If an error occurs | |
3539 | or the transfer is unsupported, NULL is returned. Empty objects | |
3540 | are returned as allocated but empty strings. A warning is issued | |
3541 | if the result contains any embedded NUL bytes. */ | |
3542 | ||
3543 | char * | |
3544 | target_fileio_read_stralloc (const char *filename) | |
3545 | { | |
39086a0e PA |
3546 | gdb_byte *buffer; |
3547 | char *bufstr; | |
7313baad UW |
3548 | LONGEST i, transferred; |
3549 | ||
39086a0e PA |
3550 | transferred = target_fileio_read_alloc_1 (filename, &buffer, 1); |
3551 | bufstr = (char *) buffer; | |
7313baad UW |
3552 | |
3553 | if (transferred < 0) | |
3554 | return NULL; | |
3555 | ||
3556 | if (transferred == 0) | |
3557 | return xstrdup (""); | |
3558 | ||
39086a0e | 3559 | bufstr[transferred] = 0; |
7313baad UW |
3560 | |
3561 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
39086a0e PA |
3562 | for (i = strlen (bufstr); i < transferred; i++) |
3563 | if (bufstr[i] != 0) | |
7313baad UW |
3564 | { |
3565 | warning (_("target file %s " | |
3566 | "contained unexpected null characters"), | |
3567 | filename); | |
3568 | break; | |
3569 | } | |
3570 | ||
39086a0e | 3571 | return bufstr; |
7313baad UW |
3572 | } |
3573 | ||
3574 | ||
e0d24f8d WZ |
3575 | static int |
3576 | default_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
3577 | { | |
f5656ead | 3578 | return (len <= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT); |
ccaa32c7 GS |
3579 | } |
3580 | ||
5009afc5 AS |
3581 | static int |
3582 | default_watchpoint_addr_within_range (struct target_ops *target, | |
3583 | CORE_ADDR addr, | |
3584 | CORE_ADDR start, int length) | |
3585 | { | |
3586 | return addr >= start && addr < start + length; | |
3587 | } | |
3588 | ||
c2250ad1 UW |
3589 | static struct gdbarch * |
3590 | default_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
3591 | { | |
f5656ead | 3592 | return target_gdbarch (); |
c2250ad1 UW |
3593 | } |
3594 | ||
c906108c | 3595 | static int |
fba45db2 | 3596 | return_zero (void) |
c906108c SS |
3597 | { |
3598 | return 0; | |
3599 | } | |
3600 | ||
3601 | static int | |
fba45db2 | 3602 | return_one (void) |
c906108c SS |
3603 | { |
3604 | return 1; | |
3605 | } | |
3606 | ||
ccaa32c7 GS |
3607 | static int |
3608 | return_minus_one (void) | |
3609 | { | |
3610 | return -1; | |
3611 | } | |
3612 | ||
7a292a7a SS |
3613 | /* Find a single runnable target in the stack and return it. If for |
3614 | some reason there is more than one, return NULL. */ | |
3615 | ||
3616 | struct target_ops * | |
fba45db2 | 3617 | find_run_target (void) |
7a292a7a SS |
3618 | { |
3619 | struct target_ops **t; | |
3620 | struct target_ops *runable = NULL; | |
3621 | int count; | |
c5aa993b | 3622 | |
7a292a7a | 3623 | count = 0; |
c5aa993b | 3624 | |
7a292a7a SS |
3625 | for (t = target_structs; t < target_structs + target_struct_size; ++t) |
3626 | { | |
c5aa993b | 3627 | if ((*t)->to_can_run && target_can_run (*t)) |
7a292a7a SS |
3628 | { |
3629 | runable = *t; | |
3630 | ++count; | |
3631 | } | |
3632 | } | |
c5aa993b | 3633 | |
7a292a7a SS |
3634 | return (count == 1 ? runable : NULL); |
3635 | } | |
3636 | ||
ed9a39eb JM |
3637 | /* |
3638 | * Find the next target down the stack from the specified target. | |
3639 | */ | |
3640 | ||
3641 | struct target_ops * | |
fba45db2 | 3642 | find_target_beneath (struct target_ops *t) |
ed9a39eb | 3643 | { |
258b763a | 3644 | return t->beneath; |
ed9a39eb JM |
3645 | } |
3646 | ||
c906108c SS |
3647 | \f |
3648 | /* The inferior process has died. Long live the inferior! */ | |
3649 | ||
3650 | void | |
fba45db2 | 3651 | generic_mourn_inferior (void) |
c906108c | 3652 | { |
7f9f62ba | 3653 | ptid_t ptid; |
c906108c | 3654 | |
7f9f62ba | 3655 | ptid = inferior_ptid; |
39f77062 | 3656 | inferior_ptid = null_ptid; |
7f9f62ba | 3657 | |
f59f708a PA |
3658 | /* Mark breakpoints uninserted in case something tries to delete a |
3659 | breakpoint while we delete the inferior's threads (which would | |
3660 | fail, since the inferior is long gone). */ | |
3661 | mark_breakpoints_out (); | |
3662 | ||
7f9f62ba PA |
3663 | if (!ptid_equal (ptid, null_ptid)) |
3664 | { | |
3665 | int pid = ptid_get_pid (ptid); | |
6c95b8df | 3666 | exit_inferior (pid); |
7f9f62ba PA |
3667 | } |
3668 | ||
f59f708a PA |
3669 | /* Note this wipes step-resume breakpoints, so needs to be done |
3670 | after exit_inferior, which ends up referencing the step-resume | |
3671 | breakpoints through clear_thread_inferior_resources. */ | |
c906108c | 3672 | breakpoint_init_inferior (inf_exited); |
f59f708a | 3673 | |
c906108c SS |
3674 | registers_changed (); |
3675 | ||
c906108c SS |
3676 | reopen_exec_file (); |
3677 | reinit_frame_cache (); | |
3678 | ||
9a4105ab AC |
3679 | if (deprecated_detach_hook) |
3680 | deprecated_detach_hook (); | |
c906108c SS |
3681 | } |
3682 | \f | |
fd0a2a6f MK |
3683 | /* Convert a normal process ID to a string. Returns the string in a |
3684 | static buffer. */ | |
c906108c SS |
3685 | |
3686 | char * | |
39f77062 | 3687 | normal_pid_to_str (ptid_t ptid) |
c906108c | 3688 | { |
fd0a2a6f | 3689 | static char buf[32]; |
c906108c | 3690 | |
5fff8fc0 | 3691 | xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid)); |
c906108c SS |
3692 | return buf; |
3693 | } | |
3694 | ||
2c0b251b | 3695 | static char * |
117de6a9 PA |
3696 | dummy_pid_to_str (struct target_ops *ops, ptid_t ptid) |
3697 | { | |
3698 | return normal_pid_to_str (ptid); | |
3699 | } | |
3700 | ||
9b4eba8e HZ |
3701 | /* Error-catcher for target_find_memory_regions. */ |
3702 | static int | |
b8edc417 | 3703 | dummy_find_memory_regions (find_memory_region_ftype ignore1, void *ignore2) |
be4d1333 | 3704 | { |
9b4eba8e | 3705 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3706 | return 0; |
3707 | } | |
3708 | ||
9b4eba8e HZ |
3709 | /* Error-catcher for target_make_corefile_notes. */ |
3710 | static char * | |
3711 | dummy_make_corefile_notes (bfd *ignore1, int *ignore2) | |
be4d1333 | 3712 | { |
9b4eba8e | 3713 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3714 | return NULL; |
3715 | } | |
3716 | ||
6b04bdb7 MS |
3717 | /* Error-catcher for target_get_bookmark. */ |
3718 | static gdb_byte * | |
3719 | dummy_get_bookmark (char *ignore1, int ignore2) | |
3720 | { | |
3721 | tcomplain (); | |
3722 | return NULL; | |
3723 | } | |
3724 | ||
3725 | /* Error-catcher for target_goto_bookmark. */ | |
3726 | static void | |
3727 | dummy_goto_bookmark (gdb_byte *ignore, int from_tty) | |
3728 | { | |
3729 | tcomplain (); | |
3730 | } | |
3731 | ||
c906108c SS |
3732 | /* Set up the handful of non-empty slots needed by the dummy target |
3733 | vector. */ | |
3734 | ||
3735 | static void | |
fba45db2 | 3736 | init_dummy_target (void) |
c906108c SS |
3737 | { |
3738 | dummy_target.to_shortname = "None"; | |
3739 | dummy_target.to_longname = "None"; | |
3740 | dummy_target.to_doc = ""; | |
3741 | dummy_target.to_attach = find_default_attach; | |
136d6dae VP |
3742 | dummy_target.to_detach = |
3743 | (void (*)(struct target_ops *, char *, int))target_ignore; | |
c906108c | 3744 | dummy_target.to_create_inferior = find_default_create_inferior; |
b84876c2 PA |
3745 | dummy_target.to_can_async_p = find_default_can_async_p; |
3746 | dummy_target.to_is_async_p = find_default_is_async_p; | |
9908b566 | 3747 | dummy_target.to_supports_non_stop = find_default_supports_non_stop; |
03583c20 UW |
3748 | dummy_target.to_supports_disable_randomization |
3749 | = find_default_supports_disable_randomization; | |
117de6a9 | 3750 | dummy_target.to_pid_to_str = dummy_pid_to_str; |
c906108c | 3751 | dummy_target.to_stratum = dummy_stratum; |
be4d1333 MS |
3752 | dummy_target.to_find_memory_regions = dummy_find_memory_regions; |
3753 | dummy_target.to_make_corefile_notes = dummy_make_corefile_notes; | |
6b04bdb7 MS |
3754 | dummy_target.to_get_bookmark = dummy_get_bookmark; |
3755 | dummy_target.to_goto_bookmark = dummy_goto_bookmark; | |
0b603eba | 3756 | dummy_target.to_xfer_partial = default_xfer_partial; |
c35b1492 PA |
3757 | dummy_target.to_has_all_memory = (int (*) (struct target_ops *)) return_zero; |
3758 | dummy_target.to_has_memory = (int (*) (struct target_ops *)) return_zero; | |
3759 | dummy_target.to_has_stack = (int (*) (struct target_ops *)) return_zero; | |
3760 | dummy_target.to_has_registers = (int (*) (struct target_ops *)) return_zero; | |
aeaec162 TT |
3761 | dummy_target.to_has_execution |
3762 | = (int (*) (struct target_ops *, ptid_t)) return_zero; | |
7155de5a HZ |
3763 | dummy_target.to_stopped_by_watchpoint = return_zero; |
3764 | dummy_target.to_stopped_data_address = | |
3765 | (int (*) (struct target_ops *, CORE_ADDR *)) return_zero; | |
c906108c SS |
3766 | dummy_target.to_magic = OPS_MAGIC; |
3767 | } | |
c906108c | 3768 | \f |
c906108c | 3769 | static void |
fba45db2 | 3770 | debug_to_open (char *args, int from_tty) |
c906108c SS |
3771 | { |
3772 | debug_target.to_open (args, from_tty); | |
3773 | ||
96baa820 | 3774 | fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty); |
c906108c SS |
3775 | } |
3776 | ||
f1c07ab0 AC |
3777 | void |
3778 | target_close (struct target_ops *targ, int quitting) | |
3779 | { | |
3780 | if (targ->to_xclose != NULL) | |
3781 | targ->to_xclose (targ, quitting); | |
3782 | else if (targ->to_close != NULL) | |
3783 | targ->to_close (quitting); | |
947b8855 PA |
3784 | |
3785 | if (targetdebug) | |
3786 | fprintf_unfiltered (gdb_stdlog, "target_close (%d)\n", quitting); | |
f1c07ab0 AC |
3787 | } |
3788 | ||
136d6dae VP |
3789 | void |
3790 | target_attach (char *args, int from_tty) | |
3791 | { | |
3792 | struct target_ops *t; | |
5d502164 | 3793 | |
136d6dae VP |
3794 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3795 | { | |
3796 | if (t->to_attach != NULL) | |
3797 | { | |
3798 | t->to_attach (t, args, from_tty); | |
947b8855 PA |
3799 | if (targetdebug) |
3800 | fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n", | |
3801 | args, from_tty); | |
136d6dae VP |
3802 | return; |
3803 | } | |
3804 | } | |
3805 | ||
3806 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 3807 | _("could not find a target to attach")); |
136d6dae VP |
3808 | } |
3809 | ||
28439f5e PA |
3810 | int |
3811 | target_thread_alive (ptid_t ptid) | |
c906108c | 3812 | { |
28439f5e | 3813 | struct target_ops *t; |
5d502164 | 3814 | |
28439f5e PA |
3815 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3816 | { | |
3817 | if (t->to_thread_alive != NULL) | |
3818 | { | |
3819 | int retval; | |
c906108c | 3820 | |
28439f5e PA |
3821 | retval = t->to_thread_alive (t, ptid); |
3822 | if (targetdebug) | |
3823 | fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n", | |
3824 | PIDGET (ptid), retval); | |
3825 | ||
3826 | return retval; | |
3827 | } | |
3828 | } | |
3829 | ||
3830 | return 0; | |
3831 | } | |
3832 | ||
3833 | void | |
3834 | target_find_new_threads (void) | |
3835 | { | |
3836 | struct target_ops *t; | |
5d502164 | 3837 | |
28439f5e PA |
3838 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3839 | { | |
3840 | if (t->to_find_new_threads != NULL) | |
3841 | { | |
3842 | t->to_find_new_threads (t); | |
3843 | if (targetdebug) | |
3844 | fprintf_unfiltered (gdb_stdlog, "target_find_new_threads ()\n"); | |
3845 | ||
3846 | return; | |
3847 | } | |
3848 | } | |
c906108c SS |
3849 | } |
3850 | ||
d914c394 SS |
3851 | void |
3852 | target_stop (ptid_t ptid) | |
3853 | { | |
3854 | if (!may_stop) | |
3855 | { | |
3856 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3857 | return; | |
3858 | } | |
3859 | ||
3860 | (*current_target.to_stop) (ptid); | |
3861 | } | |
3862 | ||
c906108c | 3863 | static void |
28439f5e | 3864 | debug_to_post_attach (int pid) |
c906108c | 3865 | { |
28439f5e | 3866 | debug_target.to_post_attach (pid); |
c906108c | 3867 | |
28439f5e | 3868 | fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid); |
c906108c SS |
3869 | } |
3870 | ||
f00150c9 DE |
3871 | /* Return a pretty printed form of target_waitstatus. |
3872 | Space for the result is malloc'd, caller must free. */ | |
c906108c | 3873 | |
f00150c9 DE |
3874 | char * |
3875 | target_waitstatus_to_string (const struct target_waitstatus *ws) | |
3876 | { | |
3877 | const char *kind_str = "status->kind = "; | |
c906108c | 3878 | |
f00150c9 | 3879 | switch (ws->kind) |
c906108c SS |
3880 | { |
3881 | case TARGET_WAITKIND_EXITED: | |
f00150c9 DE |
3882 | return xstrprintf ("%sexited, status = %d", |
3883 | kind_str, ws->value.integer); | |
c906108c | 3884 | case TARGET_WAITKIND_STOPPED: |
f00150c9 | 3885 | return xstrprintf ("%sstopped, signal = %s", |
2ea28649 | 3886 | kind_str, gdb_signal_to_name (ws->value.sig)); |
c906108c | 3887 | case TARGET_WAITKIND_SIGNALLED: |
f00150c9 | 3888 | return xstrprintf ("%ssignalled, signal = %s", |
2ea28649 | 3889 | kind_str, gdb_signal_to_name (ws->value.sig)); |
c906108c | 3890 | case TARGET_WAITKIND_LOADED: |
f00150c9 | 3891 | return xstrprintf ("%sloaded", kind_str); |
c906108c | 3892 | case TARGET_WAITKIND_FORKED: |
f00150c9 | 3893 | return xstrprintf ("%sforked", kind_str); |
c906108c | 3894 | case TARGET_WAITKIND_VFORKED: |
f00150c9 | 3895 | return xstrprintf ("%svforked", kind_str); |
c906108c | 3896 | case TARGET_WAITKIND_EXECD: |
f00150c9 | 3897 | return xstrprintf ("%sexecd", kind_str); |
87d2d2a4 PA |
3898 | case TARGET_WAITKIND_VFORK_DONE: |
3899 | return xstrprintf ("%svfork-done", kind_str); | |
f00150c9 | 3900 | case TARGET_WAITKIND_SYSCALL_ENTRY: |
a96d9b2e | 3901 | return xstrprintf ("%sentered syscall", kind_str); |
f00150c9 | 3902 | case TARGET_WAITKIND_SYSCALL_RETURN: |
a96d9b2e | 3903 | return xstrprintf ("%sexited syscall", kind_str); |
c906108c | 3904 | case TARGET_WAITKIND_SPURIOUS: |
f00150c9 DE |
3905 | return xstrprintf ("%sspurious", kind_str); |
3906 | case TARGET_WAITKIND_IGNORE: | |
3907 | return xstrprintf ("%signore", kind_str); | |
3908 | case TARGET_WAITKIND_NO_HISTORY: | |
3909 | return xstrprintf ("%sno-history", kind_str); | |
0c94aa73 PA |
3910 | case TARGET_WAITKIND_NO_RESUMED: |
3911 | return xstrprintf ("%sno-resumed", kind_str); | |
c906108c | 3912 | default: |
f00150c9 | 3913 | return xstrprintf ("%sunknown???", kind_str); |
c906108c | 3914 | } |
f00150c9 DE |
3915 | } |
3916 | ||
09826ec5 PA |
3917 | /* Concatenate ELEM to LIST, a comma separate list, and return the |
3918 | result. The LIST incoming argument is released. */ | |
3919 | ||
3920 | static char * | |
3921 | str_comma_list_concat_elem (char *list, const char *elem) | |
3922 | { | |
3923 | if (list == NULL) | |
3924 | return xstrdup (elem); | |
3925 | else | |
3926 | return reconcat (list, list, ", ", elem, (char *) NULL); | |
3927 | } | |
3928 | ||
3929 | /* Helper for target_options_to_string. If OPT is present in | |
3930 | TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET. | |
3931 | Returns the new resulting string. OPT is removed from | |
3932 | TARGET_OPTIONS. */ | |
3933 | ||
3934 | static char * | |
3935 | do_option (int *target_options, char *ret, | |
3936 | int opt, char *opt_str) | |
3937 | { | |
3938 | if ((*target_options & opt) != 0) | |
3939 | { | |
3940 | ret = str_comma_list_concat_elem (ret, opt_str); | |
3941 | *target_options &= ~opt; | |
3942 | } | |
3943 | ||
3944 | return ret; | |
3945 | } | |
3946 | ||
3947 | char * | |
3948 | target_options_to_string (int target_options) | |
3949 | { | |
3950 | char *ret = NULL; | |
3951 | ||
3952 | #define DO_TARG_OPTION(OPT) \ | |
3953 | ret = do_option (&target_options, ret, OPT, #OPT) | |
3954 | ||
3955 | DO_TARG_OPTION (TARGET_WNOHANG); | |
3956 | ||
3957 | if (target_options != 0) | |
3958 | ret = str_comma_list_concat_elem (ret, "unknown???"); | |
3959 | ||
3960 | if (ret == NULL) | |
3961 | ret = xstrdup (""); | |
3962 | return ret; | |
3963 | } | |
3964 | ||
bf0c5130 | 3965 | static void |
56be3814 UW |
3966 | debug_print_register (const char * func, |
3967 | struct regcache *regcache, int regno) | |
bf0c5130 | 3968 | { |
f8d29908 | 3969 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
5d502164 | 3970 | |
bf0c5130 | 3971 | fprintf_unfiltered (gdb_stdlog, "%s ", func); |
f8d29908 | 3972 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) |
f8d29908 UW |
3973 | && gdbarch_register_name (gdbarch, regno) != NULL |
3974 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') | |
3975 | fprintf_unfiltered (gdb_stdlog, "(%s)", | |
3976 | gdbarch_register_name (gdbarch, regno)); | |
bf0c5130 AC |
3977 | else |
3978 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
0ff58721 | 3979 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) |
bf0c5130 | 3980 | { |
e17a4113 | 3981 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
f8d29908 | 3982 | int i, size = register_size (gdbarch, regno); |
e362b510 | 3983 | gdb_byte buf[MAX_REGISTER_SIZE]; |
5d502164 | 3984 | |
0ff58721 | 3985 | regcache_raw_collect (regcache, regno, buf); |
bf0c5130 | 3986 | fprintf_unfiltered (gdb_stdlog, " = "); |
81c4a259 | 3987 | for (i = 0; i < size; i++) |
bf0c5130 AC |
3988 | { |
3989 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
3990 | } | |
81c4a259 | 3991 | if (size <= sizeof (LONGEST)) |
bf0c5130 | 3992 | { |
e17a4113 | 3993 | ULONGEST val = extract_unsigned_integer (buf, size, byte_order); |
5d502164 | 3994 | |
0b1553bc UW |
3995 | fprintf_unfiltered (gdb_stdlog, " %s %s", |
3996 | core_addr_to_string_nz (val), plongest (val)); | |
bf0c5130 AC |
3997 | } |
3998 | } | |
3999 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
4000 | } | |
4001 | ||
28439f5e PA |
4002 | void |
4003 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 4004 | { |
28439f5e | 4005 | struct target_ops *t; |
5d502164 | 4006 | |
28439f5e PA |
4007 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
4008 | { | |
4009 | if (t->to_fetch_registers != NULL) | |
4010 | { | |
4011 | t->to_fetch_registers (t, regcache, regno); | |
4012 | if (targetdebug) | |
4013 | debug_print_register ("target_fetch_registers", regcache, regno); | |
4014 | return; | |
4015 | } | |
4016 | } | |
c906108c SS |
4017 | } |
4018 | ||
28439f5e PA |
4019 | void |
4020 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 4021 | { |
28439f5e | 4022 | struct target_ops *t; |
5d502164 | 4023 | |
d914c394 SS |
4024 | if (!may_write_registers) |
4025 | error (_("Writing to registers is not allowed (regno %d)"), regno); | |
4026 | ||
28439f5e PA |
4027 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
4028 | { | |
4029 | if (t->to_store_registers != NULL) | |
4030 | { | |
4031 | t->to_store_registers (t, regcache, regno); | |
4032 | if (targetdebug) | |
4033 | { | |
4034 | debug_print_register ("target_store_registers", regcache, regno); | |
4035 | } | |
4036 | return; | |
4037 | } | |
4038 | } | |
4039 | ||
4040 | noprocess (); | |
c906108c SS |
4041 | } |
4042 | ||
dc146f7c VP |
4043 | int |
4044 | target_core_of_thread (ptid_t ptid) | |
4045 | { | |
4046 | struct target_ops *t; | |
4047 | ||
4048 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4049 | { | |
4050 | if (t->to_core_of_thread != NULL) | |
4051 | { | |
4052 | int retval = t->to_core_of_thread (t, ptid); | |
5d502164 | 4053 | |
dc146f7c | 4054 | if (targetdebug) |
3e43a32a MS |
4055 | fprintf_unfiltered (gdb_stdlog, |
4056 | "target_core_of_thread (%d) = %d\n", | |
dc146f7c VP |
4057 | PIDGET (ptid), retval); |
4058 | return retval; | |
4059 | } | |
4060 | } | |
4061 | ||
4062 | return -1; | |
4063 | } | |
4064 | ||
4a5e7a5b PA |
4065 | int |
4066 | target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
4067 | { | |
4068 | struct target_ops *t; | |
4069 | ||
4070 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4071 | { | |
4072 | if (t->to_verify_memory != NULL) | |
4073 | { | |
4074 | int retval = t->to_verify_memory (t, data, memaddr, size); | |
5d502164 | 4075 | |
4a5e7a5b | 4076 | if (targetdebug) |
3e43a32a MS |
4077 | fprintf_unfiltered (gdb_stdlog, |
4078 | "target_verify_memory (%s, %s) = %d\n", | |
f5656ead | 4079 | paddress (target_gdbarch (), memaddr), |
4a5e7a5b PA |
4080 | pulongest (size), |
4081 | retval); | |
4082 | return retval; | |
4083 | } | |
4084 | } | |
4085 | ||
4086 | tcomplain (); | |
4087 | } | |
4088 | ||
9c06b0b4 TJB |
4089 | /* The documentation for this function is in its prototype declaration in |
4090 | target.h. */ | |
4091 | ||
4092 | int | |
4093 | target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
4094 | { | |
4095 | struct target_ops *t; | |
4096 | ||
4097 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4098 | if (t->to_insert_mask_watchpoint != NULL) | |
4099 | { | |
4100 | int ret; | |
4101 | ||
4102 | ret = t->to_insert_mask_watchpoint (t, addr, mask, rw); | |
4103 | ||
4104 | if (targetdebug) | |
4105 | fprintf_unfiltered (gdb_stdlog, "\ | |
4106 | target_insert_mask_watchpoint (%s, %s, %d) = %d\n", | |
4107 | core_addr_to_string (addr), | |
4108 | core_addr_to_string (mask), rw, ret); | |
4109 | ||
4110 | return ret; | |
4111 | } | |
4112 | ||
4113 | return 1; | |
4114 | } | |
4115 | ||
4116 | /* The documentation for this function is in its prototype declaration in | |
4117 | target.h. */ | |
4118 | ||
4119 | int | |
4120 | target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
4121 | { | |
4122 | struct target_ops *t; | |
4123 | ||
4124 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4125 | if (t->to_remove_mask_watchpoint != NULL) | |
4126 | { | |
4127 | int ret; | |
4128 | ||
4129 | ret = t->to_remove_mask_watchpoint (t, addr, mask, rw); | |
4130 | ||
4131 | if (targetdebug) | |
4132 | fprintf_unfiltered (gdb_stdlog, "\ | |
4133 | target_remove_mask_watchpoint (%s, %s, %d) = %d\n", | |
4134 | core_addr_to_string (addr), | |
4135 | core_addr_to_string (mask), rw, ret); | |
4136 | ||
4137 | return ret; | |
4138 | } | |
4139 | ||
4140 | return 1; | |
4141 | } | |
4142 | ||
4143 | /* The documentation for this function is in its prototype declaration | |
4144 | in target.h. */ | |
4145 | ||
4146 | int | |
4147 | target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask) | |
4148 | { | |
4149 | struct target_ops *t; | |
4150 | ||
4151 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4152 | if (t->to_masked_watch_num_registers != NULL) | |
4153 | return t->to_masked_watch_num_registers (t, addr, mask); | |
4154 | ||
4155 | return -1; | |
4156 | } | |
4157 | ||
f1310107 TJB |
4158 | /* The documentation for this function is in its prototype declaration |
4159 | in target.h. */ | |
4160 | ||
4161 | int | |
4162 | target_ranged_break_num_registers (void) | |
4163 | { | |
4164 | struct target_ops *t; | |
4165 | ||
4166 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4167 | if (t->to_ranged_break_num_registers != NULL) | |
4168 | return t->to_ranged_break_num_registers (t); | |
4169 | ||
4170 | return -1; | |
4171 | } | |
4172 | ||
02d27625 MM |
4173 | /* See target.h. */ |
4174 | ||
4175 | int | |
4176 | target_supports_btrace (void) | |
4177 | { | |
4178 | struct target_ops *t; | |
4179 | ||
4180 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4181 | if (t->to_supports_btrace != NULL) | |
4182 | return t->to_supports_btrace (); | |
4183 | ||
4184 | return 0; | |
4185 | } | |
4186 | ||
4187 | /* See target.h. */ | |
4188 | ||
4189 | struct btrace_target_info * | |
4190 | target_enable_btrace (ptid_t ptid) | |
4191 | { | |
4192 | struct target_ops *t; | |
4193 | ||
4194 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4195 | if (t->to_enable_btrace != NULL) | |
4196 | return t->to_enable_btrace (ptid); | |
4197 | ||
4198 | tcomplain (); | |
4199 | return NULL; | |
4200 | } | |
4201 | ||
4202 | /* See target.h. */ | |
4203 | ||
4204 | void | |
4205 | target_disable_btrace (struct btrace_target_info *btinfo) | |
4206 | { | |
4207 | struct target_ops *t; | |
4208 | ||
4209 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4210 | if (t->to_disable_btrace != NULL) | |
4211 | return t->to_disable_btrace (btinfo); | |
4212 | ||
4213 | tcomplain (); | |
4214 | } | |
4215 | ||
4216 | /* See target.h. */ | |
4217 | ||
4218 | void | |
4219 | target_teardown_btrace (struct btrace_target_info *btinfo) | |
4220 | { | |
4221 | struct target_ops *t; | |
4222 | ||
4223 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4224 | if (t->to_teardown_btrace != NULL) | |
4225 | return t->to_teardown_btrace (btinfo); | |
4226 | ||
4227 | tcomplain (); | |
4228 | } | |
4229 | ||
4230 | /* See target.h. */ | |
4231 | ||
4232 | VEC (btrace_block_s) * | |
4233 | target_read_btrace (struct btrace_target_info *btinfo, | |
4234 | enum btrace_read_type type) | |
4235 | { | |
4236 | struct target_ops *t; | |
4237 | ||
4238 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4239 | if (t->to_read_btrace != NULL) | |
4240 | return t->to_read_btrace (btinfo, type); | |
4241 | ||
4242 | tcomplain (); | |
4243 | return NULL; | |
4244 | } | |
4245 | ||
d02ed0bb MM |
4246 | /* See target.h. */ |
4247 | ||
7c1687a9 MM |
4248 | void |
4249 | target_stop_recording (void) | |
4250 | { | |
4251 | struct target_ops *t; | |
4252 | ||
4253 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4254 | if (t->to_stop_recording != NULL) | |
4255 | { | |
4256 | t->to_stop_recording (); | |
4257 | return; | |
4258 | } | |
4259 | ||
4260 | /* This is optional. */ | |
4261 | } | |
4262 | ||
4263 | /* See target.h. */ | |
4264 | ||
d02ed0bb MM |
4265 | void |
4266 | target_info_record (void) | |
4267 | { | |
4268 | struct target_ops *t; | |
4269 | ||
4270 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4271 | if (t->to_info_record != NULL) | |
4272 | { | |
4273 | t->to_info_record (); | |
4274 | return; | |
4275 | } | |
4276 | ||
4277 | tcomplain (); | |
4278 | } | |
4279 | ||
4280 | /* See target.h. */ | |
4281 | ||
4282 | void | |
4283 | target_save_record (char *filename) | |
4284 | { | |
4285 | struct target_ops *t; | |
4286 | ||
4287 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4288 | if (t->to_save_record != NULL) | |
4289 | { | |
4290 | t->to_save_record (filename); | |
4291 | return; | |
4292 | } | |
4293 | ||
4294 | tcomplain (); | |
4295 | } | |
4296 | ||
4297 | /* See target.h. */ | |
4298 | ||
4299 | int | |
4300 | target_supports_delete_record (void) | |
4301 | { | |
4302 | struct target_ops *t; | |
4303 | ||
4304 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4305 | if (t->to_delete_record != NULL) | |
4306 | return 1; | |
4307 | ||
4308 | return 0; | |
4309 | } | |
4310 | ||
4311 | /* See target.h. */ | |
4312 | ||
4313 | void | |
4314 | target_delete_record (void) | |
4315 | { | |
4316 | struct target_ops *t; | |
4317 | ||
4318 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4319 | if (t->to_delete_record != NULL) | |
4320 | { | |
4321 | t->to_delete_record (); | |
4322 | return; | |
4323 | } | |
4324 | ||
4325 | tcomplain (); | |
4326 | } | |
4327 | ||
4328 | /* See target.h. */ | |
4329 | ||
4330 | int | |
4331 | target_record_is_replaying (void) | |
4332 | { | |
4333 | struct target_ops *t; | |
4334 | ||
4335 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4336 | if (t->to_record_is_replaying != NULL) | |
4337 | return t->to_record_is_replaying (); | |
4338 | ||
4339 | return 0; | |
4340 | } | |
4341 | ||
4342 | /* See target.h. */ | |
4343 | ||
4344 | void | |
4345 | target_goto_record_begin (void) | |
4346 | { | |
4347 | struct target_ops *t; | |
4348 | ||
4349 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4350 | if (t->to_goto_record_begin != NULL) | |
4351 | { | |
4352 | t->to_goto_record_begin (); | |
4353 | return; | |
4354 | } | |
4355 | ||
4356 | tcomplain (); | |
4357 | } | |
4358 | ||
4359 | /* See target.h. */ | |
4360 | ||
4361 | void | |
4362 | target_goto_record_end (void) | |
4363 | { | |
4364 | struct target_ops *t; | |
4365 | ||
4366 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4367 | if (t->to_goto_record_end != NULL) | |
4368 | { | |
4369 | t->to_goto_record_end (); | |
4370 | return; | |
4371 | } | |
4372 | ||
4373 | tcomplain (); | |
4374 | } | |
4375 | ||
4376 | /* See target.h. */ | |
4377 | ||
4378 | void | |
4379 | target_goto_record (ULONGEST insn) | |
4380 | { | |
4381 | struct target_ops *t; | |
4382 | ||
4383 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4384 | if (t->to_goto_record != NULL) | |
4385 | { | |
4386 | t->to_goto_record (insn); | |
4387 | return; | |
4388 | } | |
4389 | ||
4390 | tcomplain (); | |
4391 | } | |
4392 | ||
67c86d06 MM |
4393 | /* See target.h. */ |
4394 | ||
4395 | void | |
4396 | target_insn_history (int size, int flags) | |
4397 | { | |
4398 | struct target_ops *t; | |
4399 | ||
4400 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4401 | if (t->to_insn_history != NULL) | |
4402 | { | |
4403 | t->to_insn_history (size, flags); | |
4404 | return; | |
4405 | } | |
4406 | ||
4407 | tcomplain (); | |
4408 | } | |
4409 | ||
4410 | /* See target.h. */ | |
4411 | ||
4412 | void | |
4413 | target_insn_history_from (ULONGEST from, int size, int flags) | |
4414 | { | |
4415 | struct target_ops *t; | |
4416 | ||
4417 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4418 | if (t->to_insn_history_from != NULL) | |
4419 | { | |
4420 | t->to_insn_history_from (from, size, flags); | |
4421 | return; | |
4422 | } | |
4423 | ||
4424 | tcomplain (); | |
4425 | } | |
4426 | ||
4427 | /* See target.h. */ | |
4428 | ||
4429 | void | |
4430 | target_insn_history_range (ULONGEST begin, ULONGEST end, int flags) | |
4431 | { | |
4432 | struct target_ops *t; | |
4433 | ||
4434 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4435 | if (t->to_insn_history_range != NULL) | |
4436 | { | |
4437 | t->to_insn_history_range (begin, end, flags); | |
4438 | return; | |
4439 | } | |
4440 | ||
4441 | tcomplain (); | |
4442 | } | |
4443 | ||
15984c13 MM |
4444 | /* See target.h. */ |
4445 | ||
4446 | void | |
4447 | target_call_history (int size, int flags) | |
4448 | { | |
4449 | struct target_ops *t; | |
4450 | ||
4451 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4452 | if (t->to_call_history != NULL) | |
4453 | { | |
4454 | t->to_call_history (size, flags); | |
4455 | return; | |
4456 | } | |
4457 | ||
4458 | tcomplain (); | |
4459 | } | |
4460 | ||
4461 | /* See target.h. */ | |
4462 | ||
4463 | void | |
4464 | target_call_history_from (ULONGEST begin, int size, int flags) | |
4465 | { | |
4466 | struct target_ops *t; | |
4467 | ||
4468 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4469 | if (t->to_call_history_from != NULL) | |
4470 | { | |
4471 | t->to_call_history_from (begin, size, flags); | |
4472 | return; | |
4473 | } | |
4474 | ||
4475 | tcomplain (); | |
4476 | } | |
4477 | ||
4478 | /* See target.h. */ | |
4479 | ||
4480 | void | |
4481 | target_call_history_range (ULONGEST begin, ULONGEST end, int flags) | |
4482 | { | |
4483 | struct target_ops *t; | |
4484 | ||
4485 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4486 | if (t->to_call_history_range != NULL) | |
4487 | { | |
4488 | t->to_call_history_range (begin, end, flags); | |
4489 | return; | |
4490 | } | |
4491 | ||
4492 | tcomplain (); | |
4493 | } | |
4494 | ||
c906108c | 4495 | static void |
316f2060 | 4496 | debug_to_prepare_to_store (struct regcache *regcache) |
c906108c | 4497 | { |
316f2060 | 4498 | debug_target.to_prepare_to_store (regcache); |
c906108c | 4499 | |
96baa820 | 4500 | fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n"); |
c906108c SS |
4501 | } |
4502 | ||
4503 | static int | |
961cb7b5 | 4504 | deprecated_debug_xfer_memory (CORE_ADDR memaddr, bfd_byte *myaddr, int len, |
c8e73a31 AC |
4505 | int write, struct mem_attrib *attrib, |
4506 | struct target_ops *target) | |
c906108c SS |
4507 | { |
4508 | int retval; | |
4509 | ||
c8e73a31 AC |
4510 | retval = debug_target.deprecated_xfer_memory (memaddr, myaddr, len, write, |
4511 | attrib, target); | |
c906108c | 4512 | |
96baa820 | 4513 | fprintf_unfiltered (gdb_stdlog, |
53b71562 | 4514 | "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d", |
f5656ead | 4515 | paddress (target_gdbarch (), memaddr), len, |
5af949e3 | 4516 | write ? "write" : "read", retval); |
c906108c | 4517 | |
c906108c SS |
4518 | if (retval > 0) |
4519 | { | |
4520 | int i; | |
4521 | ||
96baa820 | 4522 | fputs_unfiltered (", bytes =", gdb_stdlog); |
c906108c SS |
4523 | for (i = 0; i < retval; i++) |
4524 | { | |
53b71562 | 4525 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
333dabeb DJ |
4526 | { |
4527 | if (targetdebug < 2 && i > 0) | |
4528 | { | |
4529 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
4530 | break; | |
4531 | } | |
4532 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
4533 | } | |
2bc416ba | 4534 | |
96baa820 | 4535 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
c906108c SS |
4536 | } |
4537 | } | |
4538 | ||
96baa820 | 4539 | fputc_unfiltered ('\n', gdb_stdlog); |
c906108c SS |
4540 | |
4541 | return retval; | |
4542 | } | |
4543 | ||
4544 | static void | |
fba45db2 | 4545 | debug_to_files_info (struct target_ops *target) |
c906108c SS |
4546 | { |
4547 | debug_target.to_files_info (target); | |
4548 | ||
96baa820 | 4549 | fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n"); |
c906108c SS |
4550 | } |
4551 | ||
4552 | static int | |
a6d9a66e UW |
4553 | debug_to_insert_breakpoint (struct gdbarch *gdbarch, |
4554 | struct bp_target_info *bp_tgt) | |
c906108c SS |
4555 | { |
4556 | int retval; | |
4557 | ||
a6d9a66e | 4558 | retval = debug_target.to_insert_breakpoint (gdbarch, bp_tgt); |
c906108c | 4559 | |
96baa820 | 4560 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
4561 | "target_insert_breakpoint (%s, xxx) = %ld\n", |
4562 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 4563 | (unsigned long) retval); |
c906108c SS |
4564 | return retval; |
4565 | } | |
4566 | ||
4567 | static int | |
a6d9a66e UW |
4568 | debug_to_remove_breakpoint (struct gdbarch *gdbarch, |
4569 | struct bp_target_info *bp_tgt) | |
c906108c SS |
4570 | { |
4571 | int retval; | |
4572 | ||
a6d9a66e | 4573 | retval = debug_target.to_remove_breakpoint (gdbarch, bp_tgt); |
c906108c | 4574 | |
96baa820 | 4575 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
4576 | "target_remove_breakpoint (%s, xxx) = %ld\n", |
4577 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 4578 | (unsigned long) retval); |
c906108c SS |
4579 | return retval; |
4580 | } | |
4581 | ||
ccaa32c7 GS |
4582 | static int |
4583 | debug_to_can_use_hw_breakpoint (int type, int cnt, int from_tty) | |
4584 | { | |
4585 | int retval; | |
4586 | ||
4587 | retval = debug_target.to_can_use_hw_breakpoint (type, cnt, from_tty); | |
4588 | ||
4589 | fprintf_unfiltered (gdb_stdlog, | |
4590 | "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n", | |
4591 | (unsigned long) type, | |
4592 | (unsigned long) cnt, | |
4593 | (unsigned long) from_tty, | |
4594 | (unsigned long) retval); | |
4595 | return retval; | |
4596 | } | |
4597 | ||
e0d24f8d WZ |
4598 | static int |
4599 | debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
4600 | { | |
4601 | CORE_ADDR retval; | |
4602 | ||
4603 | retval = debug_target.to_region_ok_for_hw_watchpoint (addr, len); | |
4604 | ||
4605 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4606 | "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n", |
4607 | core_addr_to_string (addr), (unsigned long) len, | |
4608 | core_addr_to_string (retval)); | |
e0d24f8d WZ |
4609 | return retval; |
4610 | } | |
4611 | ||
0cf6dd15 TJB |
4612 | static int |
4613 | debug_to_can_accel_watchpoint_condition (CORE_ADDR addr, int len, int rw, | |
4614 | struct expression *cond) | |
4615 | { | |
4616 | int retval; | |
4617 | ||
3e43a32a MS |
4618 | retval = debug_target.to_can_accel_watchpoint_condition (addr, len, |
4619 | rw, cond); | |
0cf6dd15 TJB |
4620 | |
4621 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
4622 | "target_can_accel_watchpoint_condition " |
4623 | "(%s, %d, %d, %s) = %ld\n", | |
bd91e7ae OS |
4624 | core_addr_to_string (addr), len, rw, |
4625 | host_address_to_string (cond), (unsigned long) retval); | |
0cf6dd15 TJB |
4626 | return retval; |
4627 | } | |
4628 | ||
ccaa32c7 GS |
4629 | static int |
4630 | debug_to_stopped_by_watchpoint (void) | |
4631 | { | |
4632 | int retval; | |
4633 | ||
4634 | retval = debug_target.to_stopped_by_watchpoint (); | |
4635 | ||
4636 | fprintf_unfiltered (gdb_stdlog, | |
d92524f1 | 4637 | "target_stopped_by_watchpoint () = %ld\n", |
ccaa32c7 GS |
4638 | (unsigned long) retval); |
4639 | return retval; | |
4640 | } | |
4641 | ||
4aa7a7f5 JJ |
4642 | static int |
4643 | debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr) | |
ccaa32c7 | 4644 | { |
4aa7a7f5 | 4645 | int retval; |
ccaa32c7 | 4646 | |
4aa7a7f5 | 4647 | retval = debug_target.to_stopped_data_address (target, addr); |
ccaa32c7 GS |
4648 | |
4649 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4650 | "target_stopped_data_address ([%s]) = %ld\n", |
4651 | core_addr_to_string (*addr), | |
4aa7a7f5 | 4652 | (unsigned long)retval); |
ccaa32c7 GS |
4653 | return retval; |
4654 | } | |
4655 | ||
5009afc5 AS |
4656 | static int |
4657 | debug_to_watchpoint_addr_within_range (struct target_ops *target, | |
4658 | CORE_ADDR addr, | |
4659 | CORE_ADDR start, int length) | |
4660 | { | |
4661 | int retval; | |
4662 | ||
4663 | retval = debug_target.to_watchpoint_addr_within_range (target, addr, | |
4664 | start, length); | |
4665 | ||
4666 | fprintf_filtered (gdb_stdlog, | |
bd91e7ae OS |
4667 | "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n", |
4668 | core_addr_to_string (addr), core_addr_to_string (start), | |
4669 | length, retval); | |
5009afc5 AS |
4670 | return retval; |
4671 | } | |
4672 | ||
ccaa32c7 | 4673 | static int |
a6d9a66e UW |
4674 | debug_to_insert_hw_breakpoint (struct gdbarch *gdbarch, |
4675 | struct bp_target_info *bp_tgt) | |
ccaa32c7 GS |
4676 | { |
4677 | int retval; | |
4678 | ||
a6d9a66e | 4679 | retval = debug_target.to_insert_hw_breakpoint (gdbarch, bp_tgt); |
ccaa32c7 GS |
4680 | |
4681 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4682 | "target_insert_hw_breakpoint (%s, xxx) = %ld\n", |
4683 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
4684 | (unsigned long) retval); |
4685 | return retval; | |
4686 | } | |
4687 | ||
4688 | static int | |
a6d9a66e UW |
4689 | debug_to_remove_hw_breakpoint (struct gdbarch *gdbarch, |
4690 | struct bp_target_info *bp_tgt) | |
ccaa32c7 GS |
4691 | { |
4692 | int retval; | |
4693 | ||
a6d9a66e | 4694 | retval = debug_target.to_remove_hw_breakpoint (gdbarch, bp_tgt); |
ccaa32c7 GS |
4695 | |
4696 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4697 | "target_remove_hw_breakpoint (%s, xxx) = %ld\n", |
4698 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
4699 | (unsigned long) retval); |
4700 | return retval; | |
4701 | } | |
4702 | ||
4703 | static int | |
0cf6dd15 TJB |
4704 | debug_to_insert_watchpoint (CORE_ADDR addr, int len, int type, |
4705 | struct expression *cond) | |
ccaa32c7 GS |
4706 | { |
4707 | int retval; | |
4708 | ||
0cf6dd15 | 4709 | retval = debug_target.to_insert_watchpoint (addr, len, type, cond); |
ccaa32c7 GS |
4710 | |
4711 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4712 | "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n", |
4713 | core_addr_to_string (addr), len, type, | |
4714 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
4715 | return retval; |
4716 | } | |
4717 | ||
4718 | static int | |
0cf6dd15 TJB |
4719 | debug_to_remove_watchpoint (CORE_ADDR addr, int len, int type, |
4720 | struct expression *cond) | |
ccaa32c7 GS |
4721 | { |
4722 | int retval; | |
4723 | ||
0cf6dd15 | 4724 | retval = debug_target.to_remove_watchpoint (addr, len, type, cond); |
ccaa32c7 GS |
4725 | |
4726 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4727 | "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n", |
4728 | core_addr_to_string (addr), len, type, | |
4729 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
4730 | return retval; |
4731 | } | |
4732 | ||
c906108c | 4733 | static void |
fba45db2 | 4734 | debug_to_terminal_init (void) |
c906108c SS |
4735 | { |
4736 | debug_target.to_terminal_init (); | |
4737 | ||
96baa820 | 4738 | fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n"); |
c906108c SS |
4739 | } |
4740 | ||
4741 | static void | |
fba45db2 | 4742 | debug_to_terminal_inferior (void) |
c906108c SS |
4743 | { |
4744 | debug_target.to_terminal_inferior (); | |
4745 | ||
96baa820 | 4746 | fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n"); |
c906108c SS |
4747 | } |
4748 | ||
4749 | static void | |
fba45db2 | 4750 | debug_to_terminal_ours_for_output (void) |
c906108c SS |
4751 | { |
4752 | debug_target.to_terminal_ours_for_output (); | |
4753 | ||
96baa820 | 4754 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n"); |
c906108c SS |
4755 | } |
4756 | ||
4757 | static void | |
fba45db2 | 4758 | debug_to_terminal_ours (void) |
c906108c SS |
4759 | { |
4760 | debug_target.to_terminal_ours (); | |
4761 | ||
96baa820 | 4762 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n"); |
c906108c SS |
4763 | } |
4764 | ||
a790ad35 SC |
4765 | static void |
4766 | debug_to_terminal_save_ours (void) | |
4767 | { | |
4768 | debug_target.to_terminal_save_ours (); | |
4769 | ||
4770 | fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n"); | |
4771 | } | |
4772 | ||
c906108c | 4773 | static void |
fba45db2 | 4774 | debug_to_terminal_info (char *arg, int from_tty) |
c906108c SS |
4775 | { |
4776 | debug_target.to_terminal_info (arg, from_tty); | |
4777 | ||
96baa820 | 4778 | fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg, |
c906108c SS |
4779 | from_tty); |
4780 | } | |
4781 | ||
c906108c | 4782 | static void |
fba45db2 | 4783 | debug_to_load (char *args, int from_tty) |
c906108c SS |
4784 | { |
4785 | debug_target.to_load (args, from_tty); | |
4786 | ||
96baa820 | 4787 | fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty); |
c906108c SS |
4788 | } |
4789 | ||
c906108c | 4790 | static void |
39f77062 | 4791 | debug_to_post_startup_inferior (ptid_t ptid) |
c906108c | 4792 | { |
39f77062 | 4793 | debug_target.to_post_startup_inferior (ptid); |
c906108c | 4794 | |
96baa820 | 4795 | fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n", |
39f77062 | 4796 | PIDGET (ptid)); |
c906108c SS |
4797 | } |
4798 | ||
77b06cd7 | 4799 | static int |
fba45db2 | 4800 | debug_to_insert_fork_catchpoint (int pid) |
c906108c | 4801 | { |
77b06cd7 TJB |
4802 | int retval; |
4803 | ||
4804 | retval = debug_target.to_insert_fork_catchpoint (pid); | |
4805 | ||
4806 | fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d) = %d\n", | |
4807 | pid, retval); | |
c906108c | 4808 | |
77b06cd7 | 4809 | return retval; |
c906108c SS |
4810 | } |
4811 | ||
4812 | static int | |
fba45db2 | 4813 | debug_to_remove_fork_catchpoint (int pid) |
c906108c | 4814 | { |
c5aa993b | 4815 | int retval; |
c906108c SS |
4816 | |
4817 | retval = debug_target.to_remove_fork_catchpoint (pid); | |
4818 | ||
96baa820 | 4819 | fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n", |
c5aa993b | 4820 | pid, retval); |
c906108c SS |
4821 | |
4822 | return retval; | |
4823 | } | |
4824 | ||
77b06cd7 | 4825 | static int |
fba45db2 | 4826 | debug_to_insert_vfork_catchpoint (int pid) |
c906108c | 4827 | { |
77b06cd7 TJB |
4828 | int retval; |
4829 | ||
4830 | retval = debug_target.to_insert_vfork_catchpoint (pid); | |
c906108c | 4831 | |
77b06cd7 TJB |
4832 | fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d) = %d\n", |
4833 | pid, retval); | |
4834 | ||
4835 | return retval; | |
c906108c SS |
4836 | } |
4837 | ||
4838 | static int | |
fba45db2 | 4839 | debug_to_remove_vfork_catchpoint (int pid) |
c906108c | 4840 | { |
c5aa993b | 4841 | int retval; |
c906108c SS |
4842 | |
4843 | retval = debug_target.to_remove_vfork_catchpoint (pid); | |
4844 | ||
96baa820 | 4845 | fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n", |
c5aa993b | 4846 | pid, retval); |
c906108c SS |
4847 | |
4848 | return retval; | |
4849 | } | |
4850 | ||
77b06cd7 | 4851 | static int |
fba45db2 | 4852 | debug_to_insert_exec_catchpoint (int pid) |
c906108c | 4853 | { |
77b06cd7 TJB |
4854 | int retval; |
4855 | ||
4856 | retval = debug_target.to_insert_exec_catchpoint (pid); | |
c906108c | 4857 | |
77b06cd7 TJB |
4858 | fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d) = %d\n", |
4859 | pid, retval); | |
4860 | ||
4861 | return retval; | |
c906108c SS |
4862 | } |
4863 | ||
4864 | static int | |
fba45db2 | 4865 | debug_to_remove_exec_catchpoint (int pid) |
c906108c | 4866 | { |
c5aa993b | 4867 | int retval; |
c906108c SS |
4868 | |
4869 | retval = debug_target.to_remove_exec_catchpoint (pid); | |
4870 | ||
96baa820 | 4871 | fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n", |
c5aa993b | 4872 | pid, retval); |
c906108c SS |
4873 | |
4874 | return retval; | |
4875 | } | |
4876 | ||
c906108c | 4877 | static int |
fba45db2 | 4878 | debug_to_has_exited (int pid, int wait_status, int *exit_status) |
c906108c | 4879 | { |
c5aa993b | 4880 | int has_exited; |
c906108c SS |
4881 | |
4882 | has_exited = debug_target.to_has_exited (pid, wait_status, exit_status); | |
4883 | ||
96baa820 | 4884 | fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n", |
c5aa993b | 4885 | pid, wait_status, *exit_status, has_exited); |
c906108c SS |
4886 | |
4887 | return has_exited; | |
4888 | } | |
4889 | ||
c906108c | 4890 | static int |
fba45db2 | 4891 | debug_to_can_run (void) |
c906108c SS |
4892 | { |
4893 | int retval; | |
4894 | ||
4895 | retval = debug_target.to_can_run (); | |
4896 | ||
96baa820 | 4897 | fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval); |
c906108c SS |
4898 | |
4899 | return retval; | |
4900 | } | |
4901 | ||
c2250ad1 UW |
4902 | static struct gdbarch * |
4903 | debug_to_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
4904 | { | |
4905 | struct gdbarch *retval; | |
4906 | ||
4907 | retval = debug_target.to_thread_architecture (ops, ptid); | |
4908 | ||
3e43a32a MS |
4909 | fprintf_unfiltered (gdb_stdlog, |
4910 | "target_thread_architecture (%s) = %s [%s]\n", | |
4911 | target_pid_to_str (ptid), | |
4912 | host_address_to_string (retval), | |
c2250ad1 UW |
4913 | gdbarch_bfd_arch_info (retval)->printable_name); |
4914 | return retval; | |
4915 | } | |
4916 | ||
c906108c | 4917 | static void |
94cc34af | 4918 | debug_to_stop (ptid_t ptid) |
c906108c | 4919 | { |
94cc34af | 4920 | debug_target.to_stop (ptid); |
c906108c | 4921 | |
94cc34af PA |
4922 | fprintf_unfiltered (gdb_stdlog, "target_stop (%s)\n", |
4923 | target_pid_to_str (ptid)); | |
c906108c SS |
4924 | } |
4925 | ||
96baa820 JM |
4926 | static void |
4927 | debug_to_rcmd (char *command, | |
d9fcf2fb | 4928 | struct ui_file *outbuf) |
96baa820 JM |
4929 | { |
4930 | debug_target.to_rcmd (command, outbuf); | |
4931 | fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command); | |
4932 | } | |
4933 | ||
c906108c | 4934 | static char * |
fba45db2 | 4935 | debug_to_pid_to_exec_file (int pid) |
c906108c | 4936 | { |
c5aa993b | 4937 | char *exec_file; |
c906108c SS |
4938 | |
4939 | exec_file = debug_target.to_pid_to_exec_file (pid); | |
4940 | ||
96baa820 | 4941 | fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n", |
c5aa993b | 4942 | pid, exec_file); |
c906108c SS |
4943 | |
4944 | return exec_file; | |
4945 | } | |
4946 | ||
c906108c | 4947 | static void |
fba45db2 | 4948 | setup_target_debug (void) |
c906108c SS |
4949 | { |
4950 | memcpy (&debug_target, ¤t_target, sizeof debug_target); | |
4951 | ||
4952 | current_target.to_open = debug_to_open; | |
c906108c | 4953 | current_target.to_post_attach = debug_to_post_attach; |
c906108c | 4954 | current_target.to_prepare_to_store = debug_to_prepare_to_store; |
c8e73a31 | 4955 | current_target.deprecated_xfer_memory = deprecated_debug_xfer_memory; |
c906108c SS |
4956 | current_target.to_files_info = debug_to_files_info; |
4957 | current_target.to_insert_breakpoint = debug_to_insert_breakpoint; | |
4958 | current_target.to_remove_breakpoint = debug_to_remove_breakpoint; | |
ccaa32c7 GS |
4959 | current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint; |
4960 | current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint; | |
4961 | current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint; | |
4962 | current_target.to_insert_watchpoint = debug_to_insert_watchpoint; | |
4963 | current_target.to_remove_watchpoint = debug_to_remove_watchpoint; | |
4964 | current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint; | |
4965 | current_target.to_stopped_data_address = debug_to_stopped_data_address; | |
3e43a32a MS |
4966 | current_target.to_watchpoint_addr_within_range |
4967 | = debug_to_watchpoint_addr_within_range; | |
4968 | current_target.to_region_ok_for_hw_watchpoint | |
4969 | = debug_to_region_ok_for_hw_watchpoint; | |
4970 | current_target.to_can_accel_watchpoint_condition | |
4971 | = debug_to_can_accel_watchpoint_condition; | |
c906108c SS |
4972 | current_target.to_terminal_init = debug_to_terminal_init; |
4973 | current_target.to_terminal_inferior = debug_to_terminal_inferior; | |
3e43a32a MS |
4974 | current_target.to_terminal_ours_for_output |
4975 | = debug_to_terminal_ours_for_output; | |
c906108c | 4976 | current_target.to_terminal_ours = debug_to_terminal_ours; |
a790ad35 | 4977 | current_target.to_terminal_save_ours = debug_to_terminal_save_ours; |
c906108c | 4978 | current_target.to_terminal_info = debug_to_terminal_info; |
c906108c | 4979 | current_target.to_load = debug_to_load; |
c906108c | 4980 | current_target.to_post_startup_inferior = debug_to_post_startup_inferior; |
c906108c SS |
4981 | current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint; |
4982 | current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint; | |
4983 | current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint; | |
4984 | current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint; | |
c906108c SS |
4985 | current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint; |
4986 | current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint; | |
c906108c | 4987 | current_target.to_has_exited = debug_to_has_exited; |
c906108c | 4988 | current_target.to_can_run = debug_to_can_run; |
c906108c | 4989 | current_target.to_stop = debug_to_stop; |
96baa820 | 4990 | current_target.to_rcmd = debug_to_rcmd; |
c906108c | 4991 | current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file; |
c2250ad1 | 4992 | current_target.to_thread_architecture = debug_to_thread_architecture; |
c906108c | 4993 | } |
c906108c | 4994 | \f |
c5aa993b JM |
4995 | |
4996 | static char targ_desc[] = | |
3e43a32a MS |
4997 | "Names of targets and files being debugged.\nShows the entire \ |
4998 | stack of targets currently in use (including the exec-file,\n\ | |
c906108c SS |
4999 | core-file, and process, if any), as well as the symbol file name."; |
5000 | ||
96baa820 JM |
5001 | static void |
5002 | do_monitor_command (char *cmd, | |
5003 | int from_tty) | |
5004 | { | |
2b5fe715 AC |
5005 | if ((current_target.to_rcmd |
5006 | == (void (*) (char *, struct ui_file *)) tcomplain) | |
96baa820 | 5007 | || (current_target.to_rcmd == debug_to_rcmd |
2b5fe715 AC |
5008 | && (debug_target.to_rcmd |
5009 | == (void (*) (char *, struct ui_file *)) tcomplain))) | |
8a3fe4f8 | 5010 | error (_("\"monitor\" command not supported by this target.")); |
96baa820 JM |
5011 | target_rcmd (cmd, gdb_stdtarg); |
5012 | } | |
5013 | ||
87680a14 JB |
5014 | /* Print the name of each layers of our target stack. */ |
5015 | ||
5016 | static void | |
5017 | maintenance_print_target_stack (char *cmd, int from_tty) | |
5018 | { | |
5019 | struct target_ops *t; | |
5020 | ||
5021 | printf_filtered (_("The current target stack is:\n")); | |
5022 | ||
5023 | for (t = target_stack; t != NULL; t = t->beneath) | |
5024 | { | |
5025 | printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname); | |
5026 | } | |
5027 | } | |
5028 | ||
c6ebd6cf VP |
5029 | /* Controls if async mode is permitted. */ |
5030 | int target_async_permitted = 0; | |
5031 | ||
5032 | /* The set command writes to this variable. If the inferior is | |
5033 | executing, linux_nat_async_permitted is *not* updated. */ | |
5034 | static int target_async_permitted_1 = 0; | |
5035 | ||
5036 | static void | |
9401a810 PA |
5037 | set_target_async_command (char *args, int from_tty, |
5038 | struct cmd_list_element *c) | |
c6ebd6cf | 5039 | { |
c35b1492 | 5040 | if (have_live_inferiors ()) |
c6ebd6cf VP |
5041 | { |
5042 | target_async_permitted_1 = target_async_permitted; | |
5043 | error (_("Cannot change this setting while the inferior is running.")); | |
5044 | } | |
5045 | ||
5046 | target_async_permitted = target_async_permitted_1; | |
5047 | } | |
5048 | ||
5049 | static void | |
9401a810 PA |
5050 | show_target_async_command (struct ui_file *file, int from_tty, |
5051 | struct cmd_list_element *c, | |
5052 | const char *value) | |
c6ebd6cf | 5053 | { |
3e43a32a MS |
5054 | fprintf_filtered (file, |
5055 | _("Controlling the inferior in " | |
5056 | "asynchronous mode is %s.\n"), value); | |
c6ebd6cf VP |
5057 | } |
5058 | ||
d914c394 SS |
5059 | /* Temporary copies of permission settings. */ |
5060 | ||
5061 | static int may_write_registers_1 = 1; | |
5062 | static int may_write_memory_1 = 1; | |
5063 | static int may_insert_breakpoints_1 = 1; | |
5064 | static int may_insert_tracepoints_1 = 1; | |
5065 | static int may_insert_fast_tracepoints_1 = 1; | |
5066 | static int may_stop_1 = 1; | |
5067 | ||
5068 | /* Make the user-set values match the real values again. */ | |
5069 | ||
5070 | void | |
5071 | update_target_permissions (void) | |
5072 | { | |
5073 | may_write_registers_1 = may_write_registers; | |
5074 | may_write_memory_1 = may_write_memory; | |
5075 | may_insert_breakpoints_1 = may_insert_breakpoints; | |
5076 | may_insert_tracepoints_1 = may_insert_tracepoints; | |
5077 | may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints; | |
5078 | may_stop_1 = may_stop; | |
5079 | } | |
5080 | ||
5081 | /* The one function handles (most of) the permission flags in the same | |
5082 | way. */ | |
5083 | ||
5084 | static void | |
5085 | set_target_permissions (char *args, int from_tty, | |
5086 | struct cmd_list_element *c) | |
5087 | { | |
5088 | if (target_has_execution) | |
5089 | { | |
5090 | update_target_permissions (); | |
5091 | error (_("Cannot change this setting while the inferior is running.")); | |
5092 | } | |
5093 | ||
5094 | /* Make the real values match the user-changed values. */ | |
5095 | may_write_registers = may_write_registers_1; | |
5096 | may_insert_breakpoints = may_insert_breakpoints_1; | |
5097 | may_insert_tracepoints = may_insert_tracepoints_1; | |
5098 | may_insert_fast_tracepoints = may_insert_fast_tracepoints_1; | |
5099 | may_stop = may_stop_1; | |
5100 | update_observer_mode (); | |
5101 | } | |
5102 | ||
5103 | /* Set memory write permission independently of observer mode. */ | |
5104 | ||
5105 | static void | |
5106 | set_write_memory_permission (char *args, int from_tty, | |
5107 | struct cmd_list_element *c) | |
5108 | { | |
5109 | /* Make the real values match the user-changed values. */ | |
5110 | may_write_memory = may_write_memory_1; | |
5111 | update_observer_mode (); | |
5112 | } | |
5113 | ||
5114 | ||
c906108c | 5115 | void |
fba45db2 | 5116 | initialize_targets (void) |
c906108c SS |
5117 | { |
5118 | init_dummy_target (); | |
5119 | push_target (&dummy_target); | |
5120 | ||
5121 | add_info ("target", target_info, targ_desc); | |
5122 | add_info ("files", target_info, targ_desc); | |
5123 | ||
ccce17b0 | 5124 | add_setshow_zuinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
85c07804 AC |
5125 | Set target debugging."), _("\ |
5126 | Show target debugging."), _("\ | |
333dabeb DJ |
5127 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
5128 | verbose. Changes do not take effect until the next \"run\" or \"target\"\n\ | |
85c07804 | 5129 | command."), |
ccce17b0 YQ |
5130 | NULL, |
5131 | show_targetdebug, | |
5132 | &setdebuglist, &showdebuglist); | |
3a11626d | 5133 | |
2bc416ba | 5134 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
5135 | &trust_readonly, _("\ |
5136 | Set mode for reading from readonly sections."), _("\ | |
5137 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
5138 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
5139 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 5140 | result in significant performance improvement for remote targets."), |
2c5b56ce | 5141 | NULL, |
920d2a44 | 5142 | show_trust_readonly, |
e707bbc2 | 5143 | &setlist, &showlist); |
96baa820 JM |
5144 | |
5145 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 5146 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 5147 | |
87680a14 JB |
5148 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
5149 | _("Print the name of each layer of the internal target stack."), | |
5150 | &maintenanceprintlist); | |
5151 | ||
c6ebd6cf VP |
5152 | add_setshow_boolean_cmd ("target-async", no_class, |
5153 | &target_async_permitted_1, _("\ | |
5154 | Set whether gdb controls the inferior in asynchronous mode."), _("\ | |
5155 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
5156 | Tells gdb whether to control the inferior in asynchronous mode."), | |
9401a810 PA |
5157 | set_target_async_command, |
5158 | show_target_async_command, | |
c6ebd6cf VP |
5159 | &setlist, |
5160 | &showlist); | |
5161 | ||
4e5d721f | 5162 | add_setshow_boolean_cmd ("stack-cache", class_support, |
9cf1b572 | 5163 | &stack_cache_enabled_p_1, _("\ |
4e5d721f DE |
5164 | Set cache use for stack access."), _("\ |
5165 | Show cache use for stack access."), _("\ | |
5166 | When on, use the data cache for all stack access, regardless of any\n\ | |
5167 | configured memory regions. This improves remote performance significantly.\n\ | |
5168 | By default, caching for stack access is on."), | |
5169 | set_stack_cache_enabled_p, | |
5170 | show_stack_cache_enabled_p, | |
5171 | &setlist, &showlist); | |
5172 | ||
d914c394 SS |
5173 | add_setshow_boolean_cmd ("may-write-registers", class_support, |
5174 | &may_write_registers_1, _("\ | |
5175 | Set permission to write into registers."), _("\ | |
5176 | Show permission to write into registers."), _("\ | |
5177 | When this permission is on, GDB may write into the target's registers.\n\ | |
5178 | Otherwise, any sort of write attempt will result in an error."), | |
5179 | set_target_permissions, NULL, | |
5180 | &setlist, &showlist); | |
5181 | ||
5182 | add_setshow_boolean_cmd ("may-write-memory", class_support, | |
5183 | &may_write_memory_1, _("\ | |
5184 | Set permission to write into target memory."), _("\ | |
5185 | Show permission to write into target memory."), _("\ | |
5186 | When this permission is on, GDB may write into the target's memory.\n\ | |
5187 | Otherwise, any sort of write attempt will result in an error."), | |
5188 | set_write_memory_permission, NULL, | |
5189 | &setlist, &showlist); | |
5190 | ||
5191 | add_setshow_boolean_cmd ("may-insert-breakpoints", class_support, | |
5192 | &may_insert_breakpoints_1, _("\ | |
5193 | Set permission to insert breakpoints in the target."), _("\ | |
5194 | Show permission to insert breakpoints in the target."), _("\ | |
5195 | When this permission is on, GDB may insert breakpoints in the program.\n\ | |
5196 | Otherwise, any sort of insertion attempt will result in an error."), | |
5197 | set_target_permissions, NULL, | |
5198 | &setlist, &showlist); | |
5199 | ||
5200 | add_setshow_boolean_cmd ("may-insert-tracepoints", class_support, | |
5201 | &may_insert_tracepoints_1, _("\ | |
5202 | Set permission to insert tracepoints in the target."), _("\ | |
5203 | Show permission to insert tracepoints in the target."), _("\ | |
5204 | When this permission is on, GDB may insert tracepoints in the program.\n\ | |
5205 | Otherwise, any sort of insertion attempt will result in an error."), | |
5206 | set_target_permissions, NULL, | |
5207 | &setlist, &showlist); | |
5208 | ||
5209 | add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support, | |
5210 | &may_insert_fast_tracepoints_1, _("\ | |
5211 | Set permission to insert fast tracepoints in the target."), _("\ | |
5212 | Show permission to insert fast tracepoints in the target."), _("\ | |
5213 | When this permission is on, GDB may insert fast tracepoints.\n\ | |
5214 | Otherwise, any sort of insertion attempt will result in an error."), | |
5215 | set_target_permissions, NULL, | |
5216 | &setlist, &showlist); | |
5217 | ||
5218 | add_setshow_boolean_cmd ("may-interrupt", class_support, | |
5219 | &may_stop_1, _("\ | |
5220 | Set permission to interrupt or signal the target."), _("\ | |
5221 | Show permission to interrupt or signal the target."), _("\ | |
5222 | When this permission is on, GDB may interrupt/stop the target's execution.\n\ | |
5223 | Otherwise, any attempt to interrupt or stop will be ignored."), | |
5224 | set_target_permissions, NULL, | |
5225 | &setlist, &showlist); | |
5226 | ||
5227 | ||
8add0441 | 5228 | target_dcache = dcache_init (); |
c906108c | 5229 | } |