Commit | Line | Data |
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c906108c | 1 | /* Select target systems and architectures at runtime for GDB. |
7998dfc3 | 2 | |
0b302171 | 3 | Copyright (C) 1990-2012 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" | |
03f2053f | 32 | #include "gdb_wait.h" |
4930751a | 33 | #include "dcache.h" |
c906108c | 34 | #include <signal.h> |
4e052eda | 35 | #include "regcache.h" |
0088c768 | 36 | #include "gdb_assert.h" |
b6591e8b | 37 | #include "gdbcore.h" |
9e35dae4 | 38 | #include "exceptions.h" |
424163ea | 39 | #include "target-descriptions.h" |
e1ac3328 | 40 | #include "gdbthread.h" |
b9db4ced | 41 | #include "solib.h" |
07b82ea5 | 42 | #include "exec.h" |
edb3359d | 43 | #include "inline-frame.h" |
2f4d8875 | 44 | #include "tracepoint.h" |
7313baad | 45 | #include "gdb/fileio.h" |
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 | ||
208 | static 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 | ||
437 | /* Stub functions */ | |
438 | ||
439 | void | |
fba45db2 | 440 | target_ignore (void) |
c906108c SS |
441 | { |
442 | } | |
443 | ||
7d85a9c0 JB |
444 | void |
445 | target_kill (void) | |
446 | { | |
447 | struct target_ops *t; | |
448 | ||
449 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
450 | if (t->to_kill != NULL) | |
451 | { | |
452 | if (targetdebug) | |
453 | fprintf_unfiltered (gdb_stdlog, "target_kill ()\n"); | |
454 | ||
455 | t->to_kill (t); | |
456 | return; | |
457 | } | |
458 | ||
459 | noprocess (); | |
460 | } | |
461 | ||
11cf8741 JM |
462 | void |
463 | target_load (char *arg, int from_tty) | |
464 | { | |
4e5d721f | 465 | target_dcache_invalidate (); |
11cf8741 JM |
466 | (*current_target.to_load) (arg, from_tty); |
467 | } | |
468 | ||
947b8855 PA |
469 | void |
470 | target_create_inferior (char *exec_file, char *args, | |
471 | char **env, int from_tty) | |
136d6dae VP |
472 | { |
473 | struct target_ops *t; | |
5d502164 | 474 | |
136d6dae VP |
475 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
476 | { | |
477 | if (t->to_create_inferior != NULL) | |
478 | { | |
479 | t->to_create_inferior (t, exec_file, args, env, from_tty); | |
947b8855 PA |
480 | if (targetdebug) |
481 | fprintf_unfiltered (gdb_stdlog, | |
482 | "target_create_inferior (%s, %s, xxx, %d)\n", | |
483 | exec_file, args, from_tty); | |
136d6dae VP |
484 | return; |
485 | } | |
486 | } | |
487 | ||
488 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 489 | _("could not find a target to create inferior")); |
136d6dae VP |
490 | } |
491 | ||
d9d2d8b6 PA |
492 | void |
493 | target_terminal_inferior (void) | |
494 | { | |
495 | /* A background resume (``run&'') should leave GDB in control of the | |
c378eb4e | 496 | terminal. Use target_can_async_p, not target_is_async_p, since at |
ba7f6c64 VP |
497 | this point the target is not async yet. However, if sync_execution |
498 | is not set, we know it will become async prior to resume. */ | |
499 | if (target_can_async_p () && !sync_execution) | |
d9d2d8b6 PA |
500 | return; |
501 | ||
502 | /* If GDB is resuming the inferior in the foreground, install | |
503 | inferior's terminal modes. */ | |
504 | (*current_target.to_terminal_inferior) (); | |
505 | } | |
136d6dae | 506 | |
c906108c | 507 | static int |
fba45db2 KB |
508 | nomemory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
509 | struct target_ops *t) | |
c906108c | 510 | { |
c378eb4e MS |
511 | errno = EIO; /* Can't read/write this location. */ |
512 | return 0; /* No bytes handled. */ | |
c906108c SS |
513 | } |
514 | ||
515 | static void | |
fba45db2 | 516 | tcomplain (void) |
c906108c | 517 | { |
8a3fe4f8 | 518 | error (_("You can't do that when your target is `%s'"), |
c906108c SS |
519 | current_target.to_shortname); |
520 | } | |
521 | ||
522 | void | |
fba45db2 | 523 | noprocess (void) |
c906108c | 524 | { |
8a3fe4f8 | 525 | error (_("You can't do that without a process to debug.")); |
c906108c SS |
526 | } |
527 | ||
c906108c | 528 | static void |
fba45db2 | 529 | default_terminal_info (char *args, int from_tty) |
c906108c | 530 | { |
a3f17187 | 531 | printf_unfiltered (_("No saved terminal information.\n")); |
c906108c SS |
532 | } |
533 | ||
0ef643c8 JB |
534 | /* A default implementation for the to_get_ada_task_ptid target method. |
535 | ||
536 | This function builds the PTID by using both LWP and TID as part of | |
537 | the PTID lwp and tid elements. The pid used is the pid of the | |
538 | inferior_ptid. */ | |
539 | ||
2c0b251b | 540 | static ptid_t |
0ef643c8 JB |
541 | default_get_ada_task_ptid (long lwp, long tid) |
542 | { | |
543 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid); | |
544 | } | |
545 | ||
32231432 PA |
546 | static enum exec_direction_kind |
547 | default_execution_direction (void) | |
548 | { | |
549 | if (!target_can_execute_reverse) | |
550 | return EXEC_FORWARD; | |
551 | else if (!target_can_async_p ()) | |
552 | return EXEC_FORWARD; | |
553 | else | |
554 | gdb_assert_not_reached ("\ | |
555 | to_execution_direction must be implemented for reverse async"); | |
556 | } | |
557 | ||
7998dfc3 AC |
558 | /* Go through the target stack from top to bottom, copying over zero |
559 | entries in current_target, then filling in still empty entries. In | |
560 | effect, we are doing class inheritance through the pushed target | |
561 | vectors. | |
562 | ||
563 | NOTE: cagney/2003-10-17: The problem with this inheritance, as it | |
564 | is currently implemented, is that it discards any knowledge of | |
565 | which target an inherited method originally belonged to. | |
566 | Consequently, new new target methods should instead explicitly and | |
567 | locally search the target stack for the target that can handle the | |
568 | request. */ | |
c906108c SS |
569 | |
570 | static void | |
7998dfc3 | 571 | update_current_target (void) |
c906108c | 572 | { |
7998dfc3 AC |
573 | struct target_ops *t; |
574 | ||
08d8bcd7 | 575 | /* First, reset current's contents. */ |
7998dfc3 AC |
576 | memset (¤t_target, 0, sizeof (current_target)); |
577 | ||
578 | #define INHERIT(FIELD, TARGET) \ | |
579 | if (!current_target.FIELD) \ | |
580 | current_target.FIELD = (TARGET)->FIELD | |
581 | ||
582 | for (t = target_stack; t; t = t->beneath) | |
583 | { | |
584 | INHERIT (to_shortname, t); | |
585 | INHERIT (to_longname, t); | |
586 | INHERIT (to_doc, t); | |
b52323fa UW |
587 | /* Do not inherit to_open. */ |
588 | /* Do not inherit to_close. */ | |
136d6dae | 589 | /* Do not inherit to_attach. */ |
7998dfc3 | 590 | INHERIT (to_post_attach, t); |
dc177b7a | 591 | INHERIT (to_attach_no_wait, t); |
136d6dae | 592 | /* Do not inherit to_detach. */ |
597320e7 | 593 | /* Do not inherit to_disconnect. */ |
28439f5e | 594 | /* Do not inherit to_resume. */ |
117de6a9 | 595 | /* Do not inherit to_wait. */ |
28439f5e PA |
596 | /* Do not inherit to_fetch_registers. */ |
597 | /* Do not inherit to_store_registers. */ | |
7998dfc3 | 598 | INHERIT (to_prepare_to_store, t); |
c8e73a31 | 599 | INHERIT (deprecated_xfer_memory, t); |
7998dfc3 AC |
600 | INHERIT (to_files_info, t); |
601 | INHERIT (to_insert_breakpoint, t); | |
602 | INHERIT (to_remove_breakpoint, t); | |
603 | INHERIT (to_can_use_hw_breakpoint, t); | |
604 | INHERIT (to_insert_hw_breakpoint, t); | |
605 | INHERIT (to_remove_hw_breakpoint, t); | |
f1310107 | 606 | /* Do not inherit to_ranged_break_num_registers. */ |
7998dfc3 AC |
607 | INHERIT (to_insert_watchpoint, t); |
608 | INHERIT (to_remove_watchpoint, t); | |
9c06b0b4 TJB |
609 | /* Do not inherit to_insert_mask_watchpoint. */ |
610 | /* Do not inherit to_remove_mask_watchpoint. */ | |
7998dfc3 | 611 | INHERIT (to_stopped_data_address, t); |
74174d2e | 612 | INHERIT (to_have_steppable_watchpoint, t); |
7998dfc3 | 613 | INHERIT (to_have_continuable_watchpoint, t); |
5009afc5 AS |
614 | INHERIT (to_stopped_by_watchpoint, t); |
615 | INHERIT (to_watchpoint_addr_within_range, t); | |
e0d24f8d | 616 | INHERIT (to_region_ok_for_hw_watchpoint, t); |
0cf6dd15 | 617 | INHERIT (to_can_accel_watchpoint_condition, t); |
9c06b0b4 | 618 | /* Do not inherit to_masked_watch_num_registers. */ |
7998dfc3 AC |
619 | INHERIT (to_terminal_init, t); |
620 | INHERIT (to_terminal_inferior, t); | |
621 | INHERIT (to_terminal_ours_for_output, t); | |
622 | INHERIT (to_terminal_ours, t); | |
623 | INHERIT (to_terminal_save_ours, t); | |
624 | INHERIT (to_terminal_info, t); | |
7d85a9c0 | 625 | /* Do not inherit to_kill. */ |
7998dfc3 | 626 | INHERIT (to_load, t); |
136d6dae | 627 | /* Do no inherit to_create_inferior. */ |
7998dfc3 | 628 | INHERIT (to_post_startup_inferior, t); |
7998dfc3 AC |
629 | INHERIT (to_insert_fork_catchpoint, t); |
630 | INHERIT (to_remove_fork_catchpoint, t); | |
631 | INHERIT (to_insert_vfork_catchpoint, t); | |
632 | INHERIT (to_remove_vfork_catchpoint, t); | |
ee057212 | 633 | /* Do not inherit to_follow_fork. */ |
7998dfc3 AC |
634 | INHERIT (to_insert_exec_catchpoint, t); |
635 | INHERIT (to_remove_exec_catchpoint, t); | |
a96d9b2e | 636 | INHERIT (to_set_syscall_catchpoint, t); |
7998dfc3 | 637 | INHERIT (to_has_exited, t); |
82892036 | 638 | /* Do not inherit to_mourn_inferior. */ |
7998dfc3 | 639 | INHERIT (to_can_run, t); |
2455069d | 640 | /* Do not inherit to_pass_signals. */ |
28439f5e PA |
641 | /* Do not inherit to_thread_alive. */ |
642 | /* Do not inherit to_find_new_threads. */ | |
117de6a9 | 643 | /* Do not inherit to_pid_to_str. */ |
7998dfc3 | 644 | INHERIT (to_extra_thread_info, t); |
4694da01 | 645 | INHERIT (to_thread_name, t); |
7998dfc3 | 646 | INHERIT (to_stop, t); |
4b8a223f | 647 | /* Do not inherit to_xfer_partial. */ |
7998dfc3 | 648 | INHERIT (to_rcmd, t); |
7998dfc3 | 649 | INHERIT (to_pid_to_exec_file, t); |
49d03eab | 650 | INHERIT (to_log_command, t); |
7998dfc3 | 651 | INHERIT (to_stratum, t); |
c378eb4e MS |
652 | /* Do not inherit to_has_all_memory. */ |
653 | /* Do not inherit to_has_memory. */ | |
654 | /* Do not inherit to_has_stack. */ | |
655 | /* Do not inherit to_has_registers. */ | |
656 | /* Do not inherit to_has_execution. */ | |
7998dfc3 | 657 | INHERIT (to_has_thread_control, t); |
7998dfc3 AC |
658 | INHERIT (to_can_async_p, t); |
659 | INHERIT (to_is_async_p, t); | |
660 | INHERIT (to_async, t); | |
7998dfc3 AC |
661 | INHERIT (to_find_memory_regions, t); |
662 | INHERIT (to_make_corefile_notes, t); | |
6b04bdb7 MS |
663 | INHERIT (to_get_bookmark, t); |
664 | INHERIT (to_goto_bookmark, t); | |
117de6a9 | 665 | /* Do not inherit to_get_thread_local_address. */ |
b2175913 | 666 | INHERIT (to_can_execute_reverse, t); |
32231432 | 667 | INHERIT (to_execution_direction, t); |
c2250ad1 | 668 | INHERIT (to_thread_architecture, t); |
424163ea | 669 | /* Do not inherit to_read_description. */ |
0ef643c8 | 670 | INHERIT (to_get_ada_task_ptid, t); |
08388c79 | 671 | /* Do not inherit to_search_memory. */ |
8a305172 | 672 | INHERIT (to_supports_multi_process, t); |
d248b706 | 673 | INHERIT (to_supports_enable_disable_tracepoint, t); |
3065dfb6 | 674 | INHERIT (to_supports_string_tracing, t); |
35b1e5cc SS |
675 | INHERIT (to_trace_init, t); |
676 | INHERIT (to_download_tracepoint, t); | |
1e4d1764 | 677 | INHERIT (to_can_download_tracepoint, t); |
35b1e5cc | 678 | INHERIT (to_download_trace_state_variable, t); |
d248b706 KY |
679 | INHERIT (to_enable_tracepoint, t); |
680 | INHERIT (to_disable_tracepoint, t); | |
35b1e5cc SS |
681 | INHERIT (to_trace_set_readonly_regions, t); |
682 | INHERIT (to_trace_start, t); | |
683 | INHERIT (to_get_trace_status, t); | |
f196051f | 684 | INHERIT (to_get_tracepoint_status, t); |
35b1e5cc SS |
685 | INHERIT (to_trace_stop, t); |
686 | INHERIT (to_trace_find, t); | |
687 | INHERIT (to_get_trace_state_variable_value, t); | |
00bf0b85 SS |
688 | INHERIT (to_save_trace_data, t); |
689 | INHERIT (to_upload_tracepoints, t); | |
690 | INHERIT (to_upload_trace_state_variables, t); | |
691 | INHERIT (to_get_raw_trace_data, t); | |
405f8e94 | 692 | INHERIT (to_get_min_fast_tracepoint_insn_len, t); |
35b1e5cc | 693 | INHERIT (to_set_disconnected_tracing, t); |
4daf5ac0 | 694 | INHERIT (to_set_circular_trace_buffer, t); |
f196051f | 695 | INHERIT (to_set_trace_notes, t); |
711e434b | 696 | INHERIT (to_get_tib_address, t); |
d914c394 | 697 | INHERIT (to_set_permissions, t); |
0fb4aa4b PA |
698 | INHERIT (to_static_tracepoint_marker_at, t); |
699 | INHERIT (to_static_tracepoint_markers_by_strid, t); | |
b3b9301e | 700 | INHERIT (to_traceframe_info, t); |
7998dfc3 | 701 | INHERIT (to_magic, t); |
b775012e | 702 | INHERIT (to_supports_evaluation_of_breakpoint_conditions, t); |
fd79ecee | 703 | /* Do not inherit to_memory_map. */ |
a76d924d DJ |
704 | /* Do not inherit to_flash_erase. */ |
705 | /* Do not inherit to_flash_done. */ | |
7998dfc3 AC |
706 | } |
707 | #undef INHERIT | |
708 | ||
709 | /* Clean up a target struct so it no longer has any zero pointers in | |
0088c768 AC |
710 | it. Some entries are defaulted to a method that print an error, |
711 | others are hard-wired to a standard recursive default. */ | |
c906108c SS |
712 | |
713 | #define de_fault(field, value) \ | |
7998dfc3 AC |
714 | if (!current_target.field) \ |
715 | current_target.field = value | |
0d06e24b | 716 | |
2bc416ba DJ |
717 | de_fault (to_open, |
718 | (void (*) (char *, int)) | |
0d06e24b | 719 | tcomplain); |
2bc416ba DJ |
720 | de_fault (to_close, |
721 | (void (*) (int)) | |
0d06e24b | 722 | target_ignore); |
2bc416ba DJ |
723 | de_fault (to_post_attach, |
724 | (void (*) (int)) | |
0d06e24b | 725 | target_ignore); |
2bc416ba | 726 | de_fault (to_prepare_to_store, |
316f2060 | 727 | (void (*) (struct regcache *)) |
0d06e24b | 728 | noprocess); |
2bc416ba | 729 | de_fault (deprecated_xfer_memory, |
3e43a32a MS |
730 | (int (*) (CORE_ADDR, gdb_byte *, int, int, |
731 | struct mem_attrib *, struct target_ops *)) | |
0d06e24b | 732 | nomemory); |
2bc416ba DJ |
733 | de_fault (to_files_info, |
734 | (void (*) (struct target_ops *)) | |
0d06e24b | 735 | target_ignore); |
2bc416ba | 736 | de_fault (to_insert_breakpoint, |
0d06e24b | 737 | memory_insert_breakpoint); |
2bc416ba | 738 | de_fault (to_remove_breakpoint, |
0d06e24b | 739 | memory_remove_breakpoint); |
ccaa32c7 GS |
740 | de_fault (to_can_use_hw_breakpoint, |
741 | (int (*) (int, int, int)) | |
742 | return_zero); | |
743 | de_fault (to_insert_hw_breakpoint, | |
a6d9a66e | 744 | (int (*) (struct gdbarch *, struct bp_target_info *)) |
ccaa32c7 GS |
745 | return_minus_one); |
746 | de_fault (to_remove_hw_breakpoint, | |
a6d9a66e | 747 | (int (*) (struct gdbarch *, struct bp_target_info *)) |
ccaa32c7 GS |
748 | return_minus_one); |
749 | de_fault (to_insert_watchpoint, | |
0cf6dd15 | 750 | (int (*) (CORE_ADDR, int, int, struct expression *)) |
ccaa32c7 GS |
751 | return_minus_one); |
752 | de_fault (to_remove_watchpoint, | |
0cf6dd15 | 753 | (int (*) (CORE_ADDR, int, int, struct expression *)) |
ccaa32c7 GS |
754 | return_minus_one); |
755 | de_fault (to_stopped_by_watchpoint, | |
756 | (int (*) (void)) | |
757 | return_zero); | |
758 | de_fault (to_stopped_data_address, | |
4aa7a7f5 | 759 | (int (*) (struct target_ops *, CORE_ADDR *)) |
ccaa32c7 | 760 | return_zero); |
5009afc5 AS |
761 | de_fault (to_watchpoint_addr_within_range, |
762 | default_watchpoint_addr_within_range); | |
e0d24f8d WZ |
763 | de_fault (to_region_ok_for_hw_watchpoint, |
764 | default_region_ok_for_hw_watchpoint); | |
0cf6dd15 TJB |
765 | de_fault (to_can_accel_watchpoint_condition, |
766 | (int (*) (CORE_ADDR, int, int, struct expression *)) | |
767 | return_zero); | |
2bc416ba DJ |
768 | de_fault (to_terminal_init, |
769 | (void (*) (void)) | |
0d06e24b | 770 | target_ignore); |
2bc416ba DJ |
771 | de_fault (to_terminal_inferior, |
772 | (void (*) (void)) | |
0d06e24b | 773 | target_ignore); |
2bc416ba DJ |
774 | de_fault (to_terminal_ours_for_output, |
775 | (void (*) (void)) | |
0d06e24b | 776 | target_ignore); |
2bc416ba DJ |
777 | de_fault (to_terminal_ours, |
778 | (void (*) (void)) | |
0d06e24b | 779 | target_ignore); |
2bc416ba DJ |
780 | de_fault (to_terminal_save_ours, |
781 | (void (*) (void)) | |
a790ad35 | 782 | target_ignore); |
2bc416ba | 783 | de_fault (to_terminal_info, |
0d06e24b | 784 | default_terminal_info); |
2bc416ba DJ |
785 | de_fault (to_load, |
786 | (void (*) (char *, int)) | |
0d06e24b | 787 | tcomplain); |
2bc416ba DJ |
788 | de_fault (to_post_startup_inferior, |
789 | (void (*) (ptid_t)) | |
0d06e24b | 790 | target_ignore); |
2bc416ba | 791 | de_fault (to_insert_fork_catchpoint, |
77b06cd7 TJB |
792 | (int (*) (int)) |
793 | return_one); | |
2bc416ba DJ |
794 | de_fault (to_remove_fork_catchpoint, |
795 | (int (*) (int)) | |
77b06cd7 | 796 | return_one); |
2bc416ba | 797 | de_fault (to_insert_vfork_catchpoint, |
77b06cd7 TJB |
798 | (int (*) (int)) |
799 | return_one); | |
2bc416ba DJ |
800 | de_fault (to_remove_vfork_catchpoint, |
801 | (int (*) (int)) | |
77b06cd7 | 802 | return_one); |
2bc416ba | 803 | de_fault (to_insert_exec_catchpoint, |
77b06cd7 TJB |
804 | (int (*) (int)) |
805 | return_one); | |
2bc416ba DJ |
806 | de_fault (to_remove_exec_catchpoint, |
807 | (int (*) (int)) | |
77b06cd7 | 808 | return_one); |
a96d9b2e SDJ |
809 | de_fault (to_set_syscall_catchpoint, |
810 | (int (*) (int, int, int, int, int *)) | |
77b06cd7 | 811 | return_one); |
2bc416ba DJ |
812 | de_fault (to_has_exited, |
813 | (int (*) (int, int, int *)) | |
0d06e24b | 814 | return_zero); |
2bc416ba | 815 | de_fault (to_can_run, |
0d06e24b | 816 | return_zero); |
2bc416ba DJ |
817 | de_fault (to_extra_thread_info, |
818 | (char *(*) (struct thread_info *)) | |
0d06e24b | 819 | return_zero); |
4694da01 TT |
820 | de_fault (to_thread_name, |
821 | (char *(*) (struct thread_info *)) | |
822 | return_zero); | |
2bc416ba | 823 | de_fault (to_stop, |
94cc34af | 824 | (void (*) (ptid_t)) |
0d06e24b | 825 | target_ignore); |
cf7a04e8 | 826 | current_target.to_xfer_partial = current_xfer_partial; |
2bc416ba DJ |
827 | de_fault (to_rcmd, |
828 | (void (*) (char *, struct ui_file *)) | |
0d06e24b | 829 | tcomplain); |
2bc416ba DJ |
830 | de_fault (to_pid_to_exec_file, |
831 | (char *(*) (int)) | |
0d06e24b | 832 | return_zero); |
2bc416ba DJ |
833 | de_fault (to_async, |
834 | (void (*) (void (*) (enum inferior_event_type, void*), void*)) | |
0d06e24b | 835 | tcomplain); |
c2250ad1 UW |
836 | de_fault (to_thread_architecture, |
837 | default_thread_architecture); | |
424163ea | 838 | current_target.to_read_description = NULL; |
0ef643c8 JB |
839 | de_fault (to_get_ada_task_ptid, |
840 | (ptid_t (*) (long, long)) | |
841 | default_get_ada_task_ptid); | |
8a305172 PA |
842 | de_fault (to_supports_multi_process, |
843 | (int (*) (void)) | |
844 | return_zero); | |
d248b706 KY |
845 | de_fault (to_supports_enable_disable_tracepoint, |
846 | (int (*) (void)) | |
847 | return_zero); | |
3065dfb6 SS |
848 | de_fault (to_supports_string_tracing, |
849 | (int (*) (void)) | |
850 | return_zero); | |
35b1e5cc SS |
851 | de_fault (to_trace_init, |
852 | (void (*) (void)) | |
853 | tcomplain); | |
854 | de_fault (to_download_tracepoint, | |
e8ba3115 | 855 | (void (*) (struct bp_location *)) |
35b1e5cc | 856 | tcomplain); |
1e4d1764 YQ |
857 | de_fault (to_can_download_tracepoint, |
858 | (int (*) (void)) | |
859 | return_zero); | |
35b1e5cc SS |
860 | de_fault (to_download_trace_state_variable, |
861 | (void (*) (struct trace_state_variable *)) | |
862 | tcomplain); | |
d248b706 KY |
863 | de_fault (to_enable_tracepoint, |
864 | (void (*) (struct bp_location *)) | |
865 | tcomplain); | |
866 | de_fault (to_disable_tracepoint, | |
867 | (void (*) (struct bp_location *)) | |
868 | tcomplain); | |
35b1e5cc SS |
869 | de_fault (to_trace_set_readonly_regions, |
870 | (void (*) (void)) | |
871 | tcomplain); | |
872 | de_fault (to_trace_start, | |
873 | (void (*) (void)) | |
874 | tcomplain); | |
875 | de_fault (to_get_trace_status, | |
00bf0b85 | 876 | (int (*) (struct trace_status *)) |
35b1e5cc | 877 | return_minus_one); |
f196051f SS |
878 | de_fault (to_get_tracepoint_status, |
879 | (void (*) (struct breakpoint *, struct uploaded_tp *)) | |
880 | tcomplain); | |
35b1e5cc SS |
881 | de_fault (to_trace_stop, |
882 | (void (*) (void)) | |
883 | tcomplain); | |
884 | de_fault (to_trace_find, | |
885 | (int (*) (enum trace_find_type, int, ULONGEST, ULONGEST, int *)) | |
4136fdd2 | 886 | return_minus_one); |
35b1e5cc SS |
887 | de_fault (to_get_trace_state_variable_value, |
888 | (int (*) (int, LONGEST *)) | |
889 | return_zero); | |
00bf0b85 | 890 | de_fault (to_save_trace_data, |
011aacb0 | 891 | (int (*) (const char *)) |
00bf0b85 SS |
892 | tcomplain); |
893 | de_fault (to_upload_tracepoints, | |
894 | (int (*) (struct uploaded_tp **)) | |
895 | return_zero); | |
896 | de_fault (to_upload_trace_state_variables, | |
897 | (int (*) (struct uploaded_tsv **)) | |
898 | return_zero); | |
899 | de_fault (to_get_raw_trace_data, | |
900 | (LONGEST (*) (gdb_byte *, ULONGEST, LONGEST)) | |
901 | tcomplain); | |
405f8e94 SS |
902 | de_fault (to_get_min_fast_tracepoint_insn_len, |
903 | (int (*) (void)) | |
904 | return_minus_one); | |
35b1e5cc SS |
905 | de_fault (to_set_disconnected_tracing, |
906 | (void (*) (int)) | |
4daf5ac0 SS |
907 | target_ignore); |
908 | de_fault (to_set_circular_trace_buffer, | |
909 | (void (*) (int)) | |
910 | target_ignore); | |
f196051f SS |
911 | de_fault (to_set_trace_notes, |
912 | (int (*) (char *, char *, char *)) | |
913 | return_zero); | |
711e434b PM |
914 | de_fault (to_get_tib_address, |
915 | (int (*) (ptid_t, CORE_ADDR *)) | |
916 | tcomplain); | |
d914c394 SS |
917 | de_fault (to_set_permissions, |
918 | (void (*) (void)) | |
919 | target_ignore); | |
0fb4aa4b PA |
920 | de_fault (to_static_tracepoint_marker_at, |
921 | (int (*) (CORE_ADDR, struct static_tracepoint_marker *)) | |
922 | return_zero); | |
923 | de_fault (to_static_tracepoint_markers_by_strid, | |
924 | (VEC(static_tracepoint_marker_p) * (*) (const char *)) | |
925 | tcomplain); | |
b3b9301e PA |
926 | de_fault (to_traceframe_info, |
927 | (struct traceframe_info * (*) (void)) | |
928 | tcomplain); | |
b775012e LM |
929 | de_fault (to_supports_evaluation_of_breakpoint_conditions, |
930 | (int (*) (void)) | |
931 | return_zero); | |
32231432 PA |
932 | de_fault (to_execution_direction, default_execution_direction); |
933 | ||
c906108c | 934 | #undef de_fault |
c906108c | 935 | |
7998dfc3 AC |
936 | /* Finally, position the target-stack beneath the squashed |
937 | "current_target". That way code looking for a non-inherited | |
938 | target method can quickly and simply find it. */ | |
939 | current_target.beneath = target_stack; | |
b4b61fdb DJ |
940 | |
941 | if (targetdebug) | |
942 | setup_target_debug (); | |
c906108c SS |
943 | } |
944 | ||
945 | /* Push a new target type into the stack of the existing target accessors, | |
946 | possibly superseding some of the existing accessors. | |
947 | ||
c906108c SS |
948 | Rather than allow an empty stack, we always have the dummy target at |
949 | the bottom stratum, so we can call the function vectors without | |
950 | checking them. */ | |
951 | ||
b26a4dcb | 952 | void |
fba45db2 | 953 | push_target (struct target_ops *t) |
c906108c | 954 | { |
258b763a | 955 | struct target_ops **cur; |
c906108c SS |
956 | |
957 | /* Check magic number. If wrong, it probably means someone changed | |
958 | the struct definition, but not all the places that initialize one. */ | |
959 | if (t->to_magic != OPS_MAGIC) | |
960 | { | |
c5aa993b JM |
961 | fprintf_unfiltered (gdb_stderr, |
962 | "Magic number of %s target struct wrong\n", | |
963 | t->to_shortname); | |
3e43a32a MS |
964 | internal_error (__FILE__, __LINE__, |
965 | _("failed internal consistency check")); | |
c906108c SS |
966 | } |
967 | ||
258b763a AC |
968 | /* Find the proper stratum to install this target in. */ |
969 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
c906108c | 970 | { |
258b763a | 971 | if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum) |
c906108c SS |
972 | break; |
973 | } | |
974 | ||
258b763a | 975 | /* If there's already targets at this stratum, remove them. */ |
88c231eb | 976 | /* FIXME: cagney/2003-10-15: I think this should be popping all |
258b763a AC |
977 | targets to CUR, and not just those at this stratum level. */ |
978 | while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum) | |
979 | { | |
980 | /* There's already something at this stratum level. Close it, | |
981 | and un-hook it from the stack. */ | |
982 | struct target_ops *tmp = (*cur); | |
5d502164 | 983 | |
258b763a AC |
984 | (*cur) = (*cur)->beneath; |
985 | tmp->beneath = NULL; | |
f1c07ab0 | 986 | target_close (tmp, 0); |
258b763a | 987 | } |
c906108c SS |
988 | |
989 | /* We have removed all targets in our stratum, now add the new one. */ | |
258b763a AC |
990 | t->beneath = (*cur); |
991 | (*cur) = t; | |
c906108c SS |
992 | |
993 | update_current_target (); | |
c906108c SS |
994 | } |
995 | ||
2bc416ba | 996 | /* Remove a target_ops vector from the stack, wherever it may be. |
c906108c SS |
997 | Return how many times it was removed (0 or 1). */ |
998 | ||
999 | int | |
fba45db2 | 1000 | unpush_target (struct target_ops *t) |
c906108c | 1001 | { |
258b763a AC |
1002 | struct target_ops **cur; |
1003 | struct target_ops *tmp; | |
c906108c | 1004 | |
c8d104ad PA |
1005 | if (t->to_stratum == dummy_stratum) |
1006 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 1007 | _("Attempt to unpush the dummy target")); |
c8d104ad | 1008 | |
c906108c | 1009 | /* Look for the specified target. Note that we assume that a target |
c378eb4e | 1010 | can only occur once in the target stack. */ |
c906108c | 1011 | |
258b763a AC |
1012 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) |
1013 | { | |
1014 | if ((*cur) == t) | |
1015 | break; | |
1016 | } | |
c906108c | 1017 | |
305436e0 PA |
1018 | /* If we don't find target_ops, quit. Only open targets should be |
1019 | closed. */ | |
258b763a | 1020 | if ((*cur) == NULL) |
305436e0 | 1021 | return 0; |
5269965e | 1022 | |
c378eb4e | 1023 | /* Unchain the target. */ |
258b763a AC |
1024 | tmp = (*cur); |
1025 | (*cur) = (*cur)->beneath; | |
1026 | tmp->beneath = NULL; | |
c906108c SS |
1027 | |
1028 | update_current_target (); | |
c906108c | 1029 | |
305436e0 PA |
1030 | /* Finally close the target. Note we do this after unchaining, so |
1031 | any target method calls from within the target_close | |
1032 | implementation don't end up in T anymore. */ | |
1033 | target_close (t, 0); | |
1034 | ||
c906108c SS |
1035 | return 1; |
1036 | } | |
1037 | ||
1038 | void | |
fba45db2 | 1039 | pop_target (void) |
c906108c | 1040 | { |
c378eb4e | 1041 | target_close (target_stack, 0); /* Let it clean up. */ |
258b763a | 1042 | if (unpush_target (target_stack) == 1) |
c906108c SS |
1043 | return; |
1044 | ||
c5aa993b JM |
1045 | fprintf_unfiltered (gdb_stderr, |
1046 | "pop_target couldn't find target %s\n", | |
1047 | current_target.to_shortname); | |
5d502164 MS |
1048 | internal_error (__FILE__, __LINE__, |
1049 | _("failed internal consistency check")); | |
c906108c SS |
1050 | } |
1051 | ||
aa76d38d | 1052 | void |
87ab71f0 | 1053 | pop_all_targets_above (enum strata above_stratum, int quitting) |
aa76d38d | 1054 | { |
87ab71f0 | 1055 | while ((int) (current_target.to_stratum) > (int) above_stratum) |
aa76d38d | 1056 | { |
b52323fa | 1057 | target_close (target_stack, quitting); |
aa76d38d PA |
1058 | if (!unpush_target (target_stack)) |
1059 | { | |
1060 | fprintf_unfiltered (gdb_stderr, | |
1061 | "pop_all_targets couldn't find target %s\n", | |
b52323fa | 1062 | target_stack->to_shortname); |
aa76d38d PA |
1063 | internal_error (__FILE__, __LINE__, |
1064 | _("failed internal consistency check")); | |
1065 | break; | |
1066 | } | |
1067 | } | |
1068 | } | |
1069 | ||
87ab71f0 PA |
1070 | void |
1071 | pop_all_targets (int quitting) | |
1072 | { | |
1073 | pop_all_targets_above (dummy_stratum, quitting); | |
1074 | } | |
1075 | ||
c0edd9ed JK |
1076 | /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */ |
1077 | ||
1078 | int | |
1079 | target_is_pushed (struct target_ops *t) | |
1080 | { | |
1081 | struct target_ops **cur; | |
1082 | ||
1083 | /* Check magic number. If wrong, it probably means someone changed | |
1084 | the struct definition, but not all the places that initialize one. */ | |
1085 | if (t->to_magic != OPS_MAGIC) | |
1086 | { | |
1087 | fprintf_unfiltered (gdb_stderr, | |
1088 | "Magic number of %s target struct wrong\n", | |
1089 | t->to_shortname); | |
3e43a32a MS |
1090 | internal_error (__FILE__, __LINE__, |
1091 | _("failed internal consistency check")); | |
c0edd9ed JK |
1092 | } |
1093 | ||
1094 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
1095 | if (*cur == t) | |
1096 | return 1; | |
1097 | ||
1098 | return 0; | |
1099 | } | |
1100 | ||
72f5cf0e | 1101 | /* Using the objfile specified in OBJFILE, find the address for the |
9e35dae4 DJ |
1102 | current thread's thread-local storage with offset OFFSET. */ |
1103 | CORE_ADDR | |
1104 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) | |
1105 | { | |
1106 | volatile CORE_ADDR addr = 0; | |
117de6a9 PA |
1107 | struct target_ops *target; |
1108 | ||
1109 | for (target = current_target.beneath; | |
1110 | target != NULL; | |
1111 | target = target->beneath) | |
1112 | { | |
1113 | if (target->to_get_thread_local_address != NULL) | |
1114 | break; | |
1115 | } | |
9e35dae4 | 1116 | |
117de6a9 | 1117 | if (target != NULL |
1cf3db46 | 1118 | && gdbarch_fetch_tls_load_module_address_p (target_gdbarch)) |
9e35dae4 DJ |
1119 | { |
1120 | ptid_t ptid = inferior_ptid; | |
1121 | volatile struct gdb_exception ex; | |
1122 | ||
1123 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
1124 | { | |
1125 | CORE_ADDR lm_addr; | |
1126 | ||
1127 | /* Fetch the load module address for this objfile. */ | |
1cf3db46 | 1128 | lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch, |
9e35dae4 DJ |
1129 | objfile); |
1130 | /* If it's 0, throw the appropriate exception. */ | |
1131 | if (lm_addr == 0) | |
1132 | throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR, | |
1133 | _("TLS load module not found")); | |
1134 | ||
3e43a32a MS |
1135 | addr = target->to_get_thread_local_address (target, ptid, |
1136 | lm_addr, offset); | |
9e35dae4 DJ |
1137 | } |
1138 | /* If an error occurred, print TLS related messages here. Otherwise, | |
1139 | throw the error to some higher catcher. */ | |
1140 | if (ex.reason < 0) | |
1141 | { | |
1142 | int objfile_is_library = (objfile->flags & OBJF_SHARED); | |
1143 | ||
1144 | switch (ex.error) | |
1145 | { | |
1146 | case TLS_NO_LIBRARY_SUPPORT_ERROR: | |
3e43a32a MS |
1147 | error (_("Cannot find thread-local variables " |
1148 | "in this thread library.")); | |
9e35dae4 DJ |
1149 | break; |
1150 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: | |
1151 | if (objfile_is_library) | |
1152 | error (_("Cannot find shared library `%s' in dynamic" | |
1153 | " linker's load module list"), objfile->name); | |
1154 | else | |
1155 | error (_("Cannot find executable file `%s' in dynamic" | |
1156 | " linker's load module list"), objfile->name); | |
1157 | break; | |
1158 | case TLS_NOT_ALLOCATED_YET_ERROR: | |
1159 | if (objfile_is_library) | |
1160 | error (_("The inferior has not yet allocated storage for" | |
1161 | " thread-local variables in\n" | |
1162 | "the shared library `%s'\n" | |
1163 | "for %s"), | |
1164 | objfile->name, target_pid_to_str (ptid)); | |
1165 | else | |
1166 | error (_("The inferior has not yet allocated storage for" | |
1167 | " thread-local variables in\n" | |
1168 | "the executable `%s'\n" | |
1169 | "for %s"), | |
1170 | objfile->name, target_pid_to_str (ptid)); | |
1171 | break; | |
1172 | case TLS_GENERIC_ERROR: | |
1173 | if (objfile_is_library) | |
1174 | error (_("Cannot find thread-local storage for %s, " | |
1175 | "shared library %s:\n%s"), | |
1176 | target_pid_to_str (ptid), | |
1177 | objfile->name, ex.message); | |
1178 | else | |
1179 | error (_("Cannot find thread-local storage for %s, " | |
1180 | "executable file %s:\n%s"), | |
1181 | target_pid_to_str (ptid), | |
1182 | objfile->name, ex.message); | |
1183 | break; | |
1184 | default: | |
1185 | throw_exception (ex); | |
1186 | break; | |
1187 | } | |
1188 | } | |
1189 | } | |
1190 | /* It wouldn't be wrong here to try a gdbarch method, too; finding | |
1191 | TLS is an ABI-specific thing. But we don't do that yet. */ | |
1192 | else | |
1193 | error (_("Cannot find thread-local variables on this target")); | |
1194 | ||
1195 | return addr; | |
1196 | } | |
1197 | ||
c906108c SS |
1198 | #undef MIN |
1199 | #define MIN(A, B) (((A) <= (B)) ? (A) : (B)) | |
1200 | ||
1201 | /* target_read_string -- read a null terminated string, up to LEN bytes, | |
1202 | from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful. | |
1203 | Set *STRING to a pointer to malloc'd memory containing the data; the caller | |
1204 | is responsible for freeing it. Return the number of bytes successfully | |
1205 | read. */ | |
1206 | ||
1207 | int | |
fba45db2 | 1208 | target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop) |
c906108c SS |
1209 | { |
1210 | int tlen, origlen, offset, i; | |
1b0ba102 | 1211 | gdb_byte buf[4]; |
c906108c SS |
1212 | int errcode = 0; |
1213 | char *buffer; | |
1214 | int buffer_allocated; | |
1215 | char *bufptr; | |
1216 | unsigned int nbytes_read = 0; | |
1217 | ||
6217bf3e MS |
1218 | gdb_assert (string); |
1219 | ||
c906108c SS |
1220 | /* Small for testing. */ |
1221 | buffer_allocated = 4; | |
1222 | buffer = xmalloc (buffer_allocated); | |
1223 | bufptr = buffer; | |
1224 | ||
1225 | origlen = len; | |
1226 | ||
1227 | while (len > 0) | |
1228 | { | |
1229 | tlen = MIN (len, 4 - (memaddr & 3)); | |
1230 | offset = memaddr & 3; | |
1231 | ||
1b0ba102 | 1232 | errcode = target_read_memory (memaddr & ~3, buf, sizeof buf); |
c906108c SS |
1233 | if (errcode != 0) |
1234 | { | |
1235 | /* The transfer request might have crossed the boundary to an | |
c378eb4e | 1236 | unallocated region of memory. Retry the transfer, requesting |
c906108c SS |
1237 | a single byte. */ |
1238 | tlen = 1; | |
1239 | offset = 0; | |
b8eb5af0 | 1240 | errcode = target_read_memory (memaddr, buf, 1); |
c906108c SS |
1241 | if (errcode != 0) |
1242 | goto done; | |
1243 | } | |
1244 | ||
1245 | if (bufptr - buffer + tlen > buffer_allocated) | |
1246 | { | |
1247 | unsigned int bytes; | |
5d502164 | 1248 | |
c906108c SS |
1249 | bytes = bufptr - buffer; |
1250 | buffer_allocated *= 2; | |
1251 | buffer = xrealloc (buffer, buffer_allocated); | |
1252 | bufptr = buffer + bytes; | |
1253 | } | |
1254 | ||
1255 | for (i = 0; i < tlen; i++) | |
1256 | { | |
1257 | *bufptr++ = buf[i + offset]; | |
1258 | if (buf[i + offset] == '\000') | |
1259 | { | |
1260 | nbytes_read += i + 1; | |
1261 | goto done; | |
1262 | } | |
1263 | } | |
1264 | ||
1265 | memaddr += tlen; | |
1266 | len -= tlen; | |
1267 | nbytes_read += tlen; | |
1268 | } | |
c5aa993b | 1269 | done: |
6217bf3e | 1270 | *string = buffer; |
c906108c SS |
1271 | if (errnop != NULL) |
1272 | *errnop = errcode; | |
c906108c SS |
1273 | return nbytes_read; |
1274 | } | |
1275 | ||
07b82ea5 PA |
1276 | struct target_section_table * |
1277 | target_get_section_table (struct target_ops *target) | |
1278 | { | |
1279 | struct target_ops *t; | |
1280 | ||
1281 | if (targetdebug) | |
1282 | fprintf_unfiltered (gdb_stdlog, "target_get_section_table ()\n"); | |
1283 | ||
1284 | for (t = target; t != NULL; t = t->beneath) | |
1285 | if (t->to_get_section_table != NULL) | |
1286 | return (*t->to_get_section_table) (t); | |
1287 | ||
1288 | return NULL; | |
1289 | } | |
1290 | ||
8db32d44 | 1291 | /* Find a section containing ADDR. */ |
07b82ea5 | 1292 | |
0542c86d | 1293 | struct target_section * |
8db32d44 AC |
1294 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
1295 | { | |
07b82ea5 | 1296 | struct target_section_table *table = target_get_section_table (target); |
0542c86d | 1297 | struct target_section *secp; |
07b82ea5 PA |
1298 | |
1299 | if (table == NULL) | |
1300 | return NULL; | |
1301 | ||
1302 | for (secp = table->sections; secp < table->sections_end; secp++) | |
8db32d44 AC |
1303 | { |
1304 | if (addr >= secp->addr && addr < secp->endaddr) | |
1305 | return secp; | |
1306 | } | |
1307 | return NULL; | |
1308 | } | |
1309 | ||
e6e4e701 PA |
1310 | /* Read memory from the live target, even if currently inspecting a |
1311 | traceframe. The return is the same as that of target_read. */ | |
1312 | ||
1313 | static LONGEST | |
1314 | target_read_live_memory (enum target_object object, | |
1315 | ULONGEST memaddr, gdb_byte *myaddr, LONGEST len) | |
1316 | { | |
1317 | int ret; | |
1318 | struct cleanup *cleanup; | |
1319 | ||
1320 | /* Switch momentarily out of tfind mode so to access live memory. | |
1321 | Note that this must not clear global state, such as the frame | |
1322 | cache, which must still remain valid for the previous traceframe. | |
1323 | We may be _building_ the frame cache at this point. */ | |
1324 | cleanup = make_cleanup_restore_traceframe_number (); | |
1325 | set_traceframe_number (-1); | |
1326 | ||
1327 | ret = target_read (current_target.beneath, object, NULL, | |
1328 | myaddr, memaddr, len); | |
1329 | ||
1330 | do_cleanups (cleanup); | |
1331 | return ret; | |
1332 | } | |
1333 | ||
1334 | /* Using the set of read-only target sections of OPS, read live | |
1335 | read-only memory. Note that the actual reads start from the | |
5657161f PA |
1336 | top-most target again. |
1337 | ||
1338 | For interface/parameters/return description see target.h, | |
1339 | to_xfer_partial. */ | |
e6e4e701 PA |
1340 | |
1341 | static LONGEST | |
1342 | memory_xfer_live_readonly_partial (struct target_ops *ops, | |
1343 | enum target_object object, | |
1344 | gdb_byte *readbuf, ULONGEST memaddr, | |
1345 | LONGEST len) | |
1346 | { | |
1347 | struct target_section *secp; | |
1348 | struct target_section_table *table; | |
1349 | ||
1350 | secp = target_section_by_addr (ops, memaddr); | |
1351 | if (secp != NULL | |
1352 | && (bfd_get_section_flags (secp->bfd, secp->the_bfd_section) | |
1353 | & SEC_READONLY)) | |
1354 | { | |
1355 | struct target_section *p; | |
1356 | ULONGEST memend = memaddr + len; | |
1357 | ||
1358 | table = target_get_section_table (ops); | |
1359 | ||
1360 | for (p = table->sections; p < table->sections_end; p++) | |
1361 | { | |
1362 | if (memaddr >= p->addr) | |
1363 | { | |
1364 | if (memend <= p->endaddr) | |
1365 | { | |
1366 | /* Entire transfer is within this section. */ | |
1367 | return target_read_live_memory (object, memaddr, | |
1368 | readbuf, len); | |
1369 | } | |
1370 | else if (memaddr >= p->endaddr) | |
1371 | { | |
1372 | /* This section ends before the transfer starts. */ | |
1373 | continue; | |
1374 | } | |
1375 | else | |
1376 | { | |
1377 | /* This section overlaps the transfer. Just do half. */ | |
1378 | len = p->endaddr - memaddr; | |
1379 | return target_read_live_memory (object, memaddr, | |
1380 | readbuf, len); | |
1381 | } | |
1382 | } | |
1383 | } | |
1384 | } | |
1385 | ||
1386 | return 0; | |
1387 | } | |
1388 | ||
7f79c47e DE |
1389 | /* Perform a partial memory transfer. |
1390 | For docs see target.h, to_xfer_partial. */ | |
cf7a04e8 DJ |
1391 | |
1392 | static LONGEST | |
f0ba3972 PA |
1393 | memory_xfer_partial_1 (struct target_ops *ops, enum target_object object, |
1394 | void *readbuf, const void *writebuf, ULONGEST memaddr, | |
1395 | LONGEST len) | |
0779438d | 1396 | { |
cf7a04e8 DJ |
1397 | LONGEST res; |
1398 | int reg_len; | |
1399 | struct mem_region *region; | |
4e5d721f | 1400 | struct inferior *inf; |
cf7a04e8 | 1401 | |
07b82ea5 PA |
1402 | /* For accesses to unmapped overlay sections, read directly from |
1403 | files. Must do this first, as MEMADDR may need adjustment. */ | |
1404 | if (readbuf != NULL && overlay_debugging) | |
1405 | { | |
1406 | struct obj_section *section = find_pc_overlay (memaddr); | |
5d502164 | 1407 | |
07b82ea5 PA |
1408 | if (pc_in_unmapped_range (memaddr, section)) |
1409 | { | |
1410 | struct target_section_table *table | |
1411 | = target_get_section_table (ops); | |
1412 | const char *section_name = section->the_bfd_section->name; | |
5d502164 | 1413 | |
07b82ea5 PA |
1414 | memaddr = overlay_mapped_address (memaddr, section); |
1415 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
1416 | memaddr, len, | |
1417 | table->sections, | |
1418 | table->sections_end, | |
1419 | section_name); | |
1420 | } | |
1421 | } | |
1422 | ||
1423 | /* Try the executable files, if "trust-readonly-sections" is set. */ | |
cf7a04e8 DJ |
1424 | if (readbuf != NULL && trust_readonly) |
1425 | { | |
0542c86d | 1426 | struct target_section *secp; |
07b82ea5 | 1427 | struct target_section_table *table; |
cf7a04e8 DJ |
1428 | |
1429 | secp = target_section_by_addr (ops, memaddr); | |
1430 | if (secp != NULL | |
1431 | && (bfd_get_section_flags (secp->bfd, secp->the_bfd_section) | |
1432 | & SEC_READONLY)) | |
07b82ea5 PA |
1433 | { |
1434 | table = target_get_section_table (ops); | |
1435 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
1436 | memaddr, len, | |
1437 | table->sections, | |
1438 | table->sections_end, | |
1439 | NULL); | |
1440 | } | |
98646950 UW |
1441 | } |
1442 | ||
e6e4e701 PA |
1443 | /* If reading unavailable memory in the context of traceframes, and |
1444 | this address falls within a read-only section, fallback to | |
1445 | reading from live memory. */ | |
1446 | if (readbuf != NULL && get_traceframe_number () != -1) | |
1447 | { | |
1448 | VEC(mem_range_s) *available; | |
1449 | ||
1450 | /* If we fail to get the set of available memory, then the | |
1451 | target does not support querying traceframe info, and so we | |
1452 | attempt reading from the traceframe anyway (assuming the | |
1453 | target implements the old QTro packet then). */ | |
1454 | if (traceframe_available_memory (&available, memaddr, len)) | |
1455 | { | |
1456 | struct cleanup *old_chain; | |
1457 | ||
1458 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available); | |
1459 | ||
1460 | if (VEC_empty (mem_range_s, available) | |
1461 | || VEC_index (mem_range_s, available, 0)->start != memaddr) | |
1462 | { | |
1463 | /* Don't read into the traceframe's available | |
1464 | memory. */ | |
1465 | if (!VEC_empty (mem_range_s, available)) | |
1466 | { | |
1467 | LONGEST oldlen = len; | |
1468 | ||
1469 | len = VEC_index (mem_range_s, available, 0)->start - memaddr; | |
1470 | gdb_assert (len <= oldlen); | |
1471 | } | |
1472 | ||
1473 | do_cleanups (old_chain); | |
1474 | ||
1475 | /* This goes through the topmost target again. */ | |
1476 | res = memory_xfer_live_readonly_partial (ops, object, | |
1477 | readbuf, memaddr, len); | |
1478 | if (res > 0) | |
1479 | return res; | |
1480 | ||
1481 | /* No use trying further, we know some memory starting | |
1482 | at MEMADDR isn't available. */ | |
1483 | return -1; | |
1484 | } | |
1485 | ||
1486 | /* Don't try to read more than how much is available, in | |
1487 | case the target implements the deprecated QTro packet to | |
1488 | cater for older GDBs (the target's knowledge of read-only | |
1489 | sections may be outdated by now). */ | |
1490 | len = VEC_index (mem_range_s, available, 0)->length; | |
1491 | ||
1492 | do_cleanups (old_chain); | |
1493 | } | |
1494 | } | |
1495 | ||
cf7a04e8 DJ |
1496 | /* Try GDB's internal data cache. */ |
1497 | region = lookup_mem_region (memaddr); | |
4b5752d0 VP |
1498 | /* region->hi == 0 means there's no upper bound. */ |
1499 | if (memaddr + len < region->hi || region->hi == 0) | |
cf7a04e8 DJ |
1500 | reg_len = len; |
1501 | else | |
1502 | reg_len = region->hi - memaddr; | |
1503 | ||
1504 | switch (region->attrib.mode) | |
1505 | { | |
1506 | case MEM_RO: | |
1507 | if (writebuf != NULL) | |
1508 | return -1; | |
1509 | break; | |
1510 | ||
1511 | case MEM_WO: | |
1512 | if (readbuf != NULL) | |
1513 | return -1; | |
1514 | break; | |
a76d924d DJ |
1515 | |
1516 | case MEM_FLASH: | |
1517 | /* We only support writing to flash during "load" for now. */ | |
1518 | if (writebuf != NULL) | |
1519 | error (_("Writing to flash memory forbidden in this context")); | |
1520 | break; | |
4b5752d0 VP |
1521 | |
1522 | case MEM_NONE: | |
1523 | return -1; | |
cf7a04e8 DJ |
1524 | } |
1525 | ||
6c95b8df PA |
1526 | if (!ptid_equal (inferior_ptid, null_ptid)) |
1527 | inf = find_inferior_pid (ptid_get_pid (inferior_ptid)); | |
1528 | else | |
1529 | inf = NULL; | |
4e5d721f DE |
1530 | |
1531 | if (inf != NULL | |
2f4d8875 PA |
1532 | /* The dcache reads whole cache lines; that doesn't play well |
1533 | with reading from a trace buffer, because reading outside of | |
1534 | the collected memory range fails. */ | |
1535 | && get_traceframe_number () == -1 | |
4e5d721f DE |
1536 | && (region->attrib.cache |
1537 | || (stack_cache_enabled_p && object == TARGET_OBJECT_STACK_MEMORY))) | |
cf7a04e8 | 1538 | { |
cf7a04e8 | 1539 | if (readbuf != NULL) |
25f122dc | 1540 | res = dcache_xfer_memory (ops, target_dcache, memaddr, readbuf, |
cf7a04e8 DJ |
1541 | reg_len, 0); |
1542 | else | |
1543 | /* FIXME drow/2006-08-09: If we're going to preserve const | |
1544 | correctness dcache_xfer_memory should take readbuf and | |
1545 | writebuf. */ | |
25f122dc | 1546 | res = dcache_xfer_memory (ops, target_dcache, memaddr, |
cf7a04e8 DJ |
1547 | (void *) writebuf, |
1548 | reg_len, 1); | |
1549 | if (res <= 0) | |
1550 | return -1; | |
1551 | else | |
f0ba3972 | 1552 | return res; |
cf7a04e8 DJ |
1553 | } |
1554 | ||
1555 | /* If none of those methods found the memory we wanted, fall back | |
1556 | to a target partial transfer. Normally a single call to | |
1557 | to_xfer_partial is enough; if it doesn't recognize an object | |
1558 | it will call the to_xfer_partial of the next target down. | |
1559 | But for memory this won't do. Memory is the only target | |
1560 | object which can be read from more than one valid target. | |
1561 | A core file, for instance, could have some of memory but | |
1562 | delegate other bits to the target below it. So, we must | |
1563 | manually try all targets. */ | |
1564 | ||
1565 | do | |
1566 | { | |
1567 | res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
4b5752d0 | 1568 | readbuf, writebuf, memaddr, reg_len); |
cf7a04e8 | 1569 | if (res > 0) |
8defab1a | 1570 | break; |
cf7a04e8 | 1571 | |
5ad3a4ca DJ |
1572 | /* We want to continue past core files to executables, but not |
1573 | past a running target's memory. */ | |
c35b1492 | 1574 | if (ops->to_has_all_memory (ops)) |
8defab1a | 1575 | break; |
5ad3a4ca | 1576 | |
cf7a04e8 DJ |
1577 | ops = ops->beneath; |
1578 | } | |
1579 | while (ops != NULL); | |
1580 | ||
41dcd03f DE |
1581 | /* Make sure the cache gets updated no matter what - if we are writing |
1582 | to the stack. Even if this write is not tagged as such, we still need | |
1583 | to update the cache. */ | |
1584 | ||
1585 | if (res > 0 | |
1586 | && inf != NULL | |
1587 | && writebuf != NULL | |
1588 | && !region->attrib.cache | |
1589 | && stack_cache_enabled_p | |
1590 | && object != TARGET_OBJECT_STACK_MEMORY) | |
1591 | { | |
7d4f32d3 | 1592 | dcache_update (target_dcache, memaddr, (void *) writebuf, res); |
41dcd03f DE |
1593 | } |
1594 | ||
cf7a04e8 DJ |
1595 | /* If we still haven't got anything, return the last error. We |
1596 | give up. */ | |
1597 | return res; | |
0779438d AC |
1598 | } |
1599 | ||
f0ba3972 PA |
1600 | /* Perform a partial memory transfer. For docs see target.h, |
1601 | to_xfer_partial. */ | |
1602 | ||
1603 | static LONGEST | |
1604 | memory_xfer_partial (struct target_ops *ops, enum target_object object, | |
1605 | void *readbuf, const void *writebuf, ULONGEST memaddr, | |
1606 | LONGEST len) | |
1607 | { | |
1608 | int res; | |
1609 | ||
1610 | /* Zero length requests are ok and require no work. */ | |
1611 | if (len == 0) | |
1612 | return 0; | |
1613 | ||
1614 | /* Fill in READBUF with breakpoint shadows, or WRITEBUF with | |
1615 | breakpoint insns, thus hiding out from higher layers whether | |
1616 | there are software breakpoints inserted in the code stream. */ | |
1617 | if (readbuf != NULL) | |
1618 | { | |
1619 | res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len); | |
1620 | ||
1621 | if (res > 0 && !show_memory_breakpoints) | |
1622 | breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, res); | |
1623 | } | |
1624 | else | |
1625 | { | |
1626 | void *buf; | |
1627 | struct cleanup *old_chain; | |
1628 | ||
1629 | buf = xmalloc (len); | |
1630 | old_chain = make_cleanup (xfree, buf); | |
1631 | memcpy (buf, writebuf, len); | |
1632 | ||
1633 | breakpoint_xfer_memory (NULL, buf, writebuf, memaddr, len); | |
1634 | res = memory_xfer_partial_1 (ops, object, NULL, buf, memaddr, len); | |
1635 | ||
1636 | do_cleanups (old_chain); | |
1637 | } | |
1638 | ||
1639 | return res; | |
1640 | } | |
1641 | ||
8defab1a DJ |
1642 | static void |
1643 | restore_show_memory_breakpoints (void *arg) | |
1644 | { | |
1645 | show_memory_breakpoints = (uintptr_t) arg; | |
1646 | } | |
1647 | ||
1648 | struct cleanup * | |
1649 | make_show_memory_breakpoints_cleanup (int show) | |
1650 | { | |
1651 | int current = show_memory_breakpoints; | |
8defab1a | 1652 | |
5d502164 | 1653 | show_memory_breakpoints = show; |
8defab1a DJ |
1654 | return make_cleanup (restore_show_memory_breakpoints, |
1655 | (void *) (uintptr_t) current); | |
1656 | } | |
1657 | ||
7f79c47e DE |
1658 | /* For docs see target.h, to_xfer_partial. */ |
1659 | ||
27394598 AC |
1660 | static LONGEST |
1661 | target_xfer_partial (struct target_ops *ops, | |
1662 | enum target_object object, const char *annex, | |
1663 | void *readbuf, const void *writebuf, | |
1664 | ULONGEST offset, LONGEST len) | |
1665 | { | |
1666 | LONGEST retval; | |
1667 | ||
1668 | gdb_assert (ops->to_xfer_partial != NULL); | |
cf7a04e8 | 1669 | |
d914c394 SS |
1670 | if (writebuf && !may_write_memory) |
1671 | error (_("Writing to memory is not allowed (addr %s, len %s)"), | |
1672 | core_addr_to_string_nz (offset), plongest (len)); | |
1673 | ||
cf7a04e8 DJ |
1674 | /* If this is a memory transfer, let the memory-specific code |
1675 | have a look at it instead. Memory transfers are more | |
1676 | complicated. */ | |
4e5d721f DE |
1677 | if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY) |
1678 | retval = memory_xfer_partial (ops, object, readbuf, | |
1679 | writebuf, offset, len); | |
cf7a04e8 DJ |
1680 | else |
1681 | { | |
1682 | enum target_object raw_object = object; | |
1683 | ||
1684 | /* If this is a raw memory transfer, request the normal | |
1685 | memory object from other layers. */ | |
1686 | if (raw_object == TARGET_OBJECT_RAW_MEMORY) | |
1687 | raw_object = TARGET_OBJECT_MEMORY; | |
1688 | ||
1689 | retval = ops->to_xfer_partial (ops, raw_object, annex, readbuf, | |
1690 | writebuf, offset, len); | |
1691 | } | |
1692 | ||
27394598 AC |
1693 | if (targetdebug) |
1694 | { | |
1695 | const unsigned char *myaddr = NULL; | |
1696 | ||
1697 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
1698 | "%s:target_xfer_partial " |
1699 | "(%d, %s, %s, %s, %s, %s) = %s", | |
27394598 AC |
1700 | ops->to_shortname, |
1701 | (int) object, | |
1702 | (annex ? annex : "(null)"), | |
53b71562 JB |
1703 | host_address_to_string (readbuf), |
1704 | host_address_to_string (writebuf), | |
0b1553bc UW |
1705 | core_addr_to_string_nz (offset), |
1706 | plongest (len), plongest (retval)); | |
27394598 AC |
1707 | |
1708 | if (readbuf) | |
1709 | myaddr = readbuf; | |
1710 | if (writebuf) | |
1711 | myaddr = writebuf; | |
1712 | if (retval > 0 && myaddr != NULL) | |
1713 | { | |
1714 | int i; | |
2bc416ba | 1715 | |
27394598 AC |
1716 | fputs_unfiltered (", bytes =", gdb_stdlog); |
1717 | for (i = 0; i < retval; i++) | |
1718 | { | |
53b71562 | 1719 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1720 | { |
1721 | if (targetdebug < 2 && i > 0) | |
1722 | { | |
1723 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
1724 | break; | |
1725 | } | |
1726 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1727 | } | |
2bc416ba | 1728 | |
27394598 AC |
1729 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
1730 | } | |
1731 | } | |
2bc416ba | 1732 | |
27394598 AC |
1733 | fputc_unfiltered ('\n', gdb_stdlog); |
1734 | } | |
1735 | return retval; | |
1736 | } | |
1737 | ||
c906108c SS |
1738 | /* Read LEN bytes of target memory at address MEMADDR, placing the results in |
1739 | GDB's memory at MYADDR. Returns either 0 for success or an errno value | |
1740 | if any error occurs. | |
1741 | ||
1742 | If an error occurs, no guarantee is made about the contents of the data at | |
1743 | MYADDR. In particular, the caller should not depend upon partial reads | |
1744 | filling the buffer with good data. There is no way for the caller to know | |
1745 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 | 1746 | deal with partial reads should call target_read (which will retry until |
c378eb4e | 1747 | it makes no progress, and then return how much was transferred). */ |
c906108c SS |
1748 | |
1749 | int | |
fc1a4b47 | 1750 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 1751 | { |
c35b1492 PA |
1752 | /* Dispatch to the topmost target, not the flattened current_target. |
1753 | Memory accesses check target->to_has_(all_)memory, and the | |
1754 | flattened target doesn't inherit those. */ | |
1755 | if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1756 | myaddr, memaddr, len) == len) |
1757 | return 0; | |
0779438d | 1758 | else |
cf7a04e8 | 1759 | return EIO; |
c906108c SS |
1760 | } |
1761 | ||
4e5d721f DE |
1762 | /* Like target_read_memory, but specify explicitly that this is a read from |
1763 | the target's stack. This may trigger different cache behavior. */ | |
1764 | ||
1765 | int | |
1766 | target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, int len) | |
1767 | { | |
1768 | /* Dispatch to the topmost target, not the flattened current_target. | |
1769 | Memory accesses check target->to_has_(all_)memory, and the | |
1770 | flattened target doesn't inherit those. */ | |
1771 | ||
1772 | if (target_read (current_target.beneath, TARGET_OBJECT_STACK_MEMORY, NULL, | |
1773 | myaddr, memaddr, len) == len) | |
1774 | return 0; | |
1775 | else | |
1776 | return EIO; | |
1777 | } | |
1778 | ||
7f79c47e DE |
1779 | /* Write LEN bytes from MYADDR to target memory at address MEMADDR. |
1780 | Returns either 0 for success or an errno value if any error occurs. | |
1781 | If an error occurs, no guarantee is made about how much data got written. | |
1782 | Callers that can deal with partial writes should call target_write. */ | |
1783 | ||
c906108c | 1784 | int |
fc1a4b47 | 1785 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) |
c906108c | 1786 | { |
c35b1492 PA |
1787 | /* Dispatch to the topmost target, not the flattened current_target. |
1788 | Memory accesses check target->to_has_(all_)memory, and the | |
1789 | flattened target doesn't inherit those. */ | |
1790 | if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1791 | myaddr, memaddr, len) == len) |
1792 | return 0; | |
0779438d | 1793 | else |
cf7a04e8 | 1794 | return EIO; |
c906108c | 1795 | } |
c5aa993b | 1796 | |
f0ba3972 PA |
1797 | /* Write LEN bytes from MYADDR to target raw memory at address |
1798 | MEMADDR. Returns either 0 for success or an errno value if any | |
1799 | error occurs. If an error occurs, no guarantee is made about how | |
1800 | much data got written. Callers that can deal with partial writes | |
1801 | should call target_write. */ | |
1802 | ||
1803 | int | |
1804 | target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) | |
1805 | { | |
1806 | /* Dispatch to the topmost target, not the flattened current_target. | |
1807 | Memory accesses check target->to_has_(all_)memory, and the | |
1808 | flattened target doesn't inherit those. */ | |
1809 | if (target_write (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, | |
1810 | myaddr, memaddr, len) == len) | |
1811 | return 0; | |
1812 | else | |
1813 | return EIO; | |
1814 | } | |
1815 | ||
fd79ecee DJ |
1816 | /* Fetch the target's memory map. */ |
1817 | ||
1818 | VEC(mem_region_s) * | |
1819 | target_memory_map (void) | |
1820 | { | |
1821 | VEC(mem_region_s) *result; | |
1822 | struct mem_region *last_one, *this_one; | |
1823 | int ix; | |
1824 | struct target_ops *t; | |
1825 | ||
1826 | if (targetdebug) | |
1827 | fprintf_unfiltered (gdb_stdlog, "target_memory_map ()\n"); | |
1828 | ||
1829 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1830 | if (t->to_memory_map != NULL) | |
1831 | break; | |
1832 | ||
1833 | if (t == NULL) | |
1834 | return NULL; | |
1835 | ||
1836 | result = t->to_memory_map (t); | |
1837 | if (result == NULL) | |
1838 | return NULL; | |
1839 | ||
1840 | qsort (VEC_address (mem_region_s, result), | |
1841 | VEC_length (mem_region_s, result), | |
1842 | sizeof (struct mem_region), mem_region_cmp); | |
1843 | ||
1844 | /* Check that regions do not overlap. Simultaneously assign | |
1845 | a numbering for the "mem" commands to use to refer to | |
1846 | each region. */ | |
1847 | last_one = NULL; | |
1848 | for (ix = 0; VEC_iterate (mem_region_s, result, ix, this_one); ix++) | |
1849 | { | |
1850 | this_one->number = ix; | |
1851 | ||
1852 | if (last_one && last_one->hi > this_one->lo) | |
1853 | { | |
1854 | warning (_("Overlapping regions in memory map: ignoring")); | |
1855 | VEC_free (mem_region_s, result); | |
1856 | return NULL; | |
1857 | } | |
1858 | last_one = this_one; | |
1859 | } | |
1860 | ||
1861 | return result; | |
1862 | } | |
1863 | ||
a76d924d DJ |
1864 | void |
1865 | target_flash_erase (ULONGEST address, LONGEST length) | |
1866 | { | |
1867 | struct target_ops *t; | |
1868 | ||
1869 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1870 | if (t->to_flash_erase != NULL) | |
5d502164 MS |
1871 | { |
1872 | if (targetdebug) | |
1873 | fprintf_unfiltered (gdb_stdlog, "target_flash_erase (%s, %s)\n", | |
1874 | hex_string (address), phex (length, 0)); | |
1875 | t->to_flash_erase (t, address, length); | |
1876 | return; | |
1877 | } | |
a76d924d DJ |
1878 | |
1879 | tcomplain (); | |
1880 | } | |
1881 | ||
1882 | void | |
1883 | target_flash_done (void) | |
1884 | { | |
1885 | struct target_ops *t; | |
1886 | ||
1887 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1888 | if (t->to_flash_done != NULL) | |
5d502164 MS |
1889 | { |
1890 | if (targetdebug) | |
1891 | fprintf_unfiltered (gdb_stdlog, "target_flash_done\n"); | |
1892 | t->to_flash_done (t); | |
1893 | return; | |
1894 | } | |
a76d924d DJ |
1895 | |
1896 | tcomplain (); | |
1897 | } | |
1898 | ||
920d2a44 AC |
1899 | static void |
1900 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1901 | struct cmd_list_element *c, const char *value) | |
1902 | { | |
3e43a32a MS |
1903 | fprintf_filtered (file, |
1904 | _("Mode for reading from readonly sections is %s.\n"), | |
920d2a44 AC |
1905 | value); |
1906 | } | |
3a11626d | 1907 | |
1e3ff5ad AC |
1908 | /* More generic transfers. */ |
1909 | ||
0088c768 | 1910 | static LONGEST |
8aa91c1e | 1911 | default_xfer_partial (struct target_ops *ops, enum target_object object, |
2bc416ba | 1912 | const char *annex, gdb_byte *readbuf, |
1b0ba102 | 1913 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) |
0088c768 AC |
1914 | { |
1915 | if (object == TARGET_OBJECT_MEMORY | |
c8e73a31 AC |
1916 | && ops->deprecated_xfer_memory != NULL) |
1917 | /* If available, fall back to the target's | |
1918 | "deprecated_xfer_memory" method. */ | |
0088c768 | 1919 | { |
4b8a223f | 1920 | int xfered = -1; |
5d502164 | 1921 | |
0088c768 | 1922 | errno = 0; |
4b8a223f AC |
1923 | if (writebuf != NULL) |
1924 | { | |
1925 | void *buffer = xmalloc (len); | |
1926 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |
5d502164 | 1927 | |
4b8a223f | 1928 | memcpy (buffer, writebuf, len); |
c8e73a31 AC |
1929 | xfered = ops->deprecated_xfer_memory (offset, buffer, len, |
1930 | 1/*write*/, NULL, ops); | |
4b8a223f AC |
1931 | do_cleanups (cleanup); |
1932 | } | |
1933 | if (readbuf != NULL) | |
244e85c8 MS |
1934 | xfered = ops->deprecated_xfer_memory (offset, readbuf, len, |
1935 | 0/*read*/, NULL, ops); | |
0088c768 AC |
1936 | if (xfered > 0) |
1937 | return xfered; | |
1938 | else if (xfered == 0 && errno == 0) | |
c8e73a31 AC |
1939 | /* "deprecated_xfer_memory" uses 0, cross checked against |
1940 | ERRNO as one indication of an error. */ | |
0088c768 AC |
1941 | return 0; |
1942 | else | |
1943 | return -1; | |
1944 | } | |
1945 | else if (ops->beneath != NULL) | |
cf7a04e8 DJ |
1946 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, |
1947 | readbuf, writebuf, offset, len); | |
1948 | else | |
1949 | return -1; | |
1950 | } | |
1951 | ||
1952 | /* The xfer_partial handler for the topmost target. Unlike the default, | |
1953 | it does not need to handle memory specially; it just passes all | |
1954 | requests down the stack. */ | |
1955 | ||
1956 | static LONGEST | |
1957 | current_xfer_partial (struct target_ops *ops, enum target_object object, | |
1958 | const char *annex, gdb_byte *readbuf, | |
1959 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1960 | { | |
1961 | if (ops->beneath != NULL) | |
1962 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, | |
1963 | readbuf, writebuf, offset, len); | |
0088c768 AC |
1964 | else |
1965 | return -1; | |
1966 | } | |
1967 | ||
7f79c47e | 1968 | /* Target vector read/write partial wrapper functions. */ |
0088c768 | 1969 | |
13547ab6 | 1970 | static LONGEST |
1e3ff5ad AC |
1971 | target_read_partial (struct target_ops *ops, |
1972 | enum target_object object, | |
1b0ba102 | 1973 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1974 | ULONGEST offset, LONGEST len) |
1975 | { | |
27394598 | 1976 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len); |
1e3ff5ad AC |
1977 | } |
1978 | ||
13547ab6 | 1979 | static LONGEST |
1e3ff5ad AC |
1980 | target_write_partial (struct target_ops *ops, |
1981 | enum target_object object, | |
1b0ba102 | 1982 | const char *annex, const gdb_byte *buf, |
1e3ff5ad AC |
1983 | ULONGEST offset, LONGEST len) |
1984 | { | |
27394598 | 1985 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len); |
1e3ff5ad AC |
1986 | } |
1987 | ||
1988 | /* Wrappers to perform the full transfer. */ | |
7f79c47e DE |
1989 | |
1990 | /* For docs on target_read see target.h. */ | |
1991 | ||
1e3ff5ad AC |
1992 | LONGEST |
1993 | target_read (struct target_ops *ops, | |
1994 | enum target_object object, | |
1b0ba102 | 1995 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1996 | ULONGEST offset, LONGEST len) |
1997 | { | |
1998 | LONGEST xfered = 0; | |
5d502164 | 1999 | |
1e3ff5ad AC |
2000 | while (xfered < len) |
2001 | { | |
0088c768 | 2002 | LONGEST xfer = target_read_partial (ops, object, annex, |
fc1a4b47 | 2003 | (gdb_byte *) buf + xfered, |
0088c768 | 2004 | offset + xfered, len - xfered); |
5d502164 | 2005 | |
1e3ff5ad | 2006 | /* Call an observer, notifying them of the xfer progress? */ |
13547ab6 DJ |
2007 | if (xfer == 0) |
2008 | return xfered; | |
2009 | if (xfer < 0) | |
0088c768 | 2010 | return -1; |
1e3ff5ad AC |
2011 | xfered += xfer; |
2012 | QUIT; | |
2013 | } | |
2014 | return len; | |
2015 | } | |
2016 | ||
f1a507a1 JB |
2017 | /* Assuming that the entire [begin, end) range of memory cannot be |
2018 | read, try to read whatever subrange is possible to read. | |
2019 | ||
2020 | The function returns, in RESULT, either zero or one memory block. | |
2021 | If there's a readable subrange at the beginning, it is completely | |
2022 | read and returned. Any further readable subrange will not be read. | |
2023 | Otherwise, if there's a readable subrange at the end, it will be | |
2024 | completely read and returned. Any readable subranges before it | |
2025 | (obviously, not starting at the beginning), will be ignored. In | |
2026 | other cases -- either no readable subrange, or readable subrange(s) | |
2027 | that is neither at the beginning, or end, nothing is returned. | |
2028 | ||
2029 | The purpose of this function is to handle a read across a boundary | |
2030 | of accessible memory in a case when memory map is not available. | |
2031 | The above restrictions are fine for this case, but will give | |
2032 | incorrect results if the memory is 'patchy'. However, supporting | |
2033 | 'patchy' memory would require trying to read every single byte, | |
2034 | and it seems unacceptable solution. Explicit memory map is | |
2035 | recommended for this case -- and target_read_memory_robust will | |
2036 | take care of reading multiple ranges then. */ | |
8dedea02 VP |
2037 | |
2038 | static void | |
3e43a32a MS |
2039 | read_whatever_is_readable (struct target_ops *ops, |
2040 | ULONGEST begin, ULONGEST end, | |
8dedea02 | 2041 | VEC(memory_read_result_s) **result) |
d5086790 | 2042 | { |
f1a507a1 | 2043 | gdb_byte *buf = xmalloc (end - begin); |
8dedea02 VP |
2044 | ULONGEST current_begin = begin; |
2045 | ULONGEST current_end = end; | |
2046 | int forward; | |
2047 | memory_read_result_s r; | |
2048 | ||
2049 | /* If we previously failed to read 1 byte, nothing can be done here. */ | |
2050 | if (end - begin <= 1) | |
13b3fd9b MS |
2051 | { |
2052 | xfree (buf); | |
2053 | return; | |
2054 | } | |
8dedea02 VP |
2055 | |
2056 | /* Check that either first or the last byte is readable, and give up | |
c378eb4e | 2057 | if not. This heuristic is meant to permit reading accessible memory |
8dedea02 VP |
2058 | at the boundary of accessible region. */ |
2059 | if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
2060 | buf, begin, 1) == 1) | |
2061 | { | |
2062 | forward = 1; | |
2063 | ++current_begin; | |
2064 | } | |
2065 | else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
2066 | buf + (end-begin) - 1, end - 1, 1) == 1) | |
2067 | { | |
2068 | forward = 0; | |
2069 | --current_end; | |
2070 | } | |
2071 | else | |
2072 | { | |
13b3fd9b | 2073 | xfree (buf); |
8dedea02 VP |
2074 | return; |
2075 | } | |
2076 | ||
2077 | /* Loop invariant is that the [current_begin, current_end) was previously | |
2078 | found to be not readable as a whole. | |
2079 | ||
2080 | Note loop condition -- if the range has 1 byte, we can't divide the range | |
2081 | so there's no point trying further. */ | |
2082 | while (current_end - current_begin > 1) | |
2083 | { | |
2084 | ULONGEST first_half_begin, first_half_end; | |
2085 | ULONGEST second_half_begin, second_half_end; | |
2086 | LONGEST xfer; | |
8dedea02 | 2087 | ULONGEST middle = current_begin + (current_end - current_begin)/2; |
f1a507a1 | 2088 | |
8dedea02 VP |
2089 | if (forward) |
2090 | { | |
2091 | first_half_begin = current_begin; | |
2092 | first_half_end = middle; | |
2093 | second_half_begin = middle; | |
2094 | second_half_end = current_end; | |
2095 | } | |
2096 | else | |
2097 | { | |
2098 | first_half_begin = middle; | |
2099 | first_half_end = current_end; | |
2100 | second_half_begin = current_begin; | |
2101 | second_half_end = middle; | |
2102 | } | |
2103 | ||
2104 | xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2105 | buf + (first_half_begin - begin), | |
2106 | first_half_begin, | |
2107 | first_half_end - first_half_begin); | |
2108 | ||
2109 | if (xfer == first_half_end - first_half_begin) | |
2110 | { | |
c378eb4e | 2111 | /* This half reads up fine. So, the error must be in the |
3e43a32a | 2112 | other half. */ |
8dedea02 VP |
2113 | current_begin = second_half_begin; |
2114 | current_end = second_half_end; | |
2115 | } | |
2116 | else | |
2117 | { | |
c378eb4e MS |
2118 | /* This half is not readable. Because we've tried one byte, we |
2119 | know some part of this half if actually redable. Go to the next | |
8dedea02 VP |
2120 | iteration to divide again and try to read. |
2121 | ||
2122 | We don't handle the other half, because this function only tries | |
2123 | to read a single readable subrange. */ | |
2124 | current_begin = first_half_begin; | |
2125 | current_end = first_half_end; | |
2126 | } | |
2127 | } | |
2128 | ||
2129 | if (forward) | |
2130 | { | |
2131 | /* The [begin, current_begin) range has been read. */ | |
2132 | r.begin = begin; | |
2133 | r.end = current_begin; | |
2134 | r.data = buf; | |
2135 | } | |
2136 | else | |
2137 | { | |
2138 | /* The [current_end, end) range has been read. */ | |
2139 | LONGEST rlen = end - current_end; | |
f1a507a1 | 2140 | |
8dedea02 VP |
2141 | r.data = xmalloc (rlen); |
2142 | memcpy (r.data, buf + current_end - begin, rlen); | |
2143 | r.begin = current_end; | |
2144 | r.end = end; | |
2145 | xfree (buf); | |
2146 | } | |
2147 | VEC_safe_push(memory_read_result_s, (*result), &r); | |
2148 | } | |
2149 | ||
2150 | void | |
2151 | free_memory_read_result_vector (void *x) | |
2152 | { | |
2153 | VEC(memory_read_result_s) *v = x; | |
2154 | memory_read_result_s *current; | |
2155 | int ix; | |
2156 | ||
2157 | for (ix = 0; VEC_iterate (memory_read_result_s, v, ix, current); ++ix) | |
2158 | { | |
2159 | xfree (current->data); | |
2160 | } | |
2161 | VEC_free (memory_read_result_s, v); | |
2162 | } | |
2163 | ||
2164 | VEC(memory_read_result_s) * | |
2165 | read_memory_robust (struct target_ops *ops, ULONGEST offset, LONGEST len) | |
2166 | { | |
2167 | VEC(memory_read_result_s) *result = 0; | |
2168 | ||
2169 | LONGEST xfered = 0; | |
d5086790 VP |
2170 | while (xfered < len) |
2171 | { | |
8dedea02 VP |
2172 | struct mem_region *region = lookup_mem_region (offset + xfered); |
2173 | LONGEST rlen; | |
5d502164 | 2174 | |
8dedea02 VP |
2175 | /* If there is no explicit region, a fake one should be created. */ |
2176 | gdb_assert (region); | |
2177 | ||
2178 | if (region->hi == 0) | |
2179 | rlen = len - xfered; | |
2180 | else | |
2181 | rlen = region->hi - offset; | |
2182 | ||
2183 | if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO) | |
d5086790 | 2184 | { |
c378eb4e | 2185 | /* Cannot read this region. Note that we can end up here only |
8dedea02 VP |
2186 | if the region is explicitly marked inaccessible, or |
2187 | 'inaccessible-by-default' is in effect. */ | |
2188 | xfered += rlen; | |
2189 | } | |
2190 | else | |
2191 | { | |
2192 | LONGEST to_read = min (len - xfered, rlen); | |
2193 | gdb_byte *buffer = (gdb_byte *)xmalloc (to_read); | |
2194 | ||
2195 | LONGEST xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2196 | (gdb_byte *) buffer, | |
2197 | offset + xfered, to_read); | |
2198 | /* Call an observer, notifying them of the xfer progress? */ | |
d5086790 | 2199 | if (xfer <= 0) |
d5086790 | 2200 | { |
c378eb4e | 2201 | /* Got an error reading full chunk. See if maybe we can read |
8dedea02 VP |
2202 | some subrange. */ |
2203 | xfree (buffer); | |
3e43a32a MS |
2204 | read_whatever_is_readable (ops, offset + xfered, |
2205 | offset + xfered + to_read, &result); | |
8dedea02 | 2206 | xfered += to_read; |
d5086790 | 2207 | } |
8dedea02 VP |
2208 | else |
2209 | { | |
2210 | struct memory_read_result r; | |
2211 | r.data = buffer; | |
2212 | r.begin = offset + xfered; | |
2213 | r.end = r.begin + xfer; | |
2214 | VEC_safe_push (memory_read_result_s, result, &r); | |
2215 | xfered += xfer; | |
2216 | } | |
2217 | QUIT; | |
d5086790 | 2218 | } |
d5086790 | 2219 | } |
8dedea02 | 2220 | return result; |
d5086790 VP |
2221 | } |
2222 | ||
8dedea02 | 2223 | |
cf7a04e8 DJ |
2224 | /* An alternative to target_write with progress callbacks. */ |
2225 | ||
1e3ff5ad | 2226 | LONGEST |
cf7a04e8 DJ |
2227 | target_write_with_progress (struct target_ops *ops, |
2228 | enum target_object object, | |
2229 | const char *annex, const gdb_byte *buf, | |
2230 | ULONGEST offset, LONGEST len, | |
2231 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad AC |
2232 | { |
2233 | LONGEST xfered = 0; | |
a76d924d DJ |
2234 | |
2235 | /* Give the progress callback a chance to set up. */ | |
2236 | if (progress) | |
2237 | (*progress) (0, baton); | |
2238 | ||
1e3ff5ad AC |
2239 | while (xfered < len) |
2240 | { | |
2241 | LONGEST xfer = target_write_partial (ops, object, annex, | |
fc1a4b47 | 2242 | (gdb_byte *) buf + xfered, |
1e3ff5ad | 2243 | offset + xfered, len - xfered); |
cf7a04e8 | 2244 | |
13547ab6 DJ |
2245 | if (xfer == 0) |
2246 | return xfered; | |
2247 | if (xfer < 0) | |
0088c768 | 2248 | return -1; |
cf7a04e8 DJ |
2249 | |
2250 | if (progress) | |
2251 | (*progress) (xfer, baton); | |
2252 | ||
1e3ff5ad AC |
2253 | xfered += xfer; |
2254 | QUIT; | |
2255 | } | |
2256 | return len; | |
2257 | } | |
2258 | ||
7f79c47e DE |
2259 | /* For docs on target_write see target.h. */ |
2260 | ||
cf7a04e8 DJ |
2261 | LONGEST |
2262 | target_write (struct target_ops *ops, | |
2263 | enum target_object object, | |
2264 | const char *annex, const gdb_byte *buf, | |
2265 | ULONGEST offset, LONGEST len) | |
2266 | { | |
2267 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
2268 | NULL, NULL); | |
2269 | } | |
2270 | ||
159f81f3 DJ |
2271 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
2272 | the size of the transferred data. PADDING additional bytes are | |
2273 | available in *BUF_P. This is a helper function for | |
2274 | target_read_alloc; see the declaration of that function for more | |
2275 | information. */ | |
13547ab6 | 2276 | |
159f81f3 DJ |
2277 | static LONGEST |
2278 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, | |
2279 | const char *annex, gdb_byte **buf_p, int padding) | |
13547ab6 DJ |
2280 | { |
2281 | size_t buf_alloc, buf_pos; | |
2282 | gdb_byte *buf; | |
2283 | LONGEST n; | |
2284 | ||
2285 | /* This function does not have a length parameter; it reads the | |
2286 | entire OBJECT). Also, it doesn't support objects fetched partly | |
2287 | from one target and partly from another (in a different stratum, | |
2288 | e.g. a core file and an executable). Both reasons make it | |
2289 | unsuitable for reading memory. */ | |
2290 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
2291 | ||
2292 | /* Start by reading up to 4K at a time. The target will throttle | |
2293 | this number down if necessary. */ | |
2294 | buf_alloc = 4096; | |
2295 | buf = xmalloc (buf_alloc); | |
2296 | buf_pos = 0; | |
2297 | while (1) | |
2298 | { | |
2299 | n = target_read_partial (ops, object, annex, &buf[buf_pos], | |
159f81f3 | 2300 | buf_pos, buf_alloc - buf_pos - padding); |
13547ab6 DJ |
2301 | if (n < 0) |
2302 | { | |
2303 | /* An error occurred. */ | |
2304 | xfree (buf); | |
2305 | return -1; | |
2306 | } | |
2307 | else if (n == 0) | |
2308 | { | |
2309 | /* Read all there was. */ | |
2310 | if (buf_pos == 0) | |
2311 | xfree (buf); | |
2312 | else | |
2313 | *buf_p = buf; | |
2314 | return buf_pos; | |
2315 | } | |
2316 | ||
2317 | buf_pos += n; | |
2318 | ||
2319 | /* If the buffer is filling up, expand it. */ | |
2320 | if (buf_alloc < buf_pos * 2) | |
2321 | { | |
2322 | buf_alloc *= 2; | |
2323 | buf = xrealloc (buf, buf_alloc); | |
2324 | } | |
2325 | ||
2326 | QUIT; | |
2327 | } | |
2328 | } | |
2329 | ||
159f81f3 DJ |
2330 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
2331 | the size of the transferred data. See the declaration in "target.h" | |
2332 | function for more information about the return value. */ | |
2333 | ||
2334 | LONGEST | |
2335 | target_read_alloc (struct target_ops *ops, enum target_object object, | |
2336 | const char *annex, gdb_byte **buf_p) | |
2337 | { | |
2338 | return target_read_alloc_1 (ops, object, annex, buf_p, 0); | |
2339 | } | |
2340 | ||
2341 | /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and | |
2342 | returned as a string, allocated using xmalloc. If an error occurs | |
2343 | or the transfer is unsupported, NULL is returned. Empty objects | |
2344 | are returned as allocated but empty strings. A warning is issued | |
2345 | if the result contains any embedded NUL bytes. */ | |
2346 | ||
2347 | char * | |
2348 | target_read_stralloc (struct target_ops *ops, enum target_object object, | |
2349 | const char *annex) | |
2350 | { | |
2351 | gdb_byte *buffer; | |
7313baad | 2352 | LONGEST i, transferred; |
159f81f3 DJ |
2353 | |
2354 | transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1); | |
2355 | ||
2356 | if (transferred < 0) | |
2357 | return NULL; | |
2358 | ||
2359 | if (transferred == 0) | |
2360 | return xstrdup (""); | |
2361 | ||
2362 | buffer[transferred] = 0; | |
7313baad UW |
2363 | |
2364 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
2365 | for (i = strlen (buffer); i < transferred; i++) | |
2366 | if (buffer[i] != 0) | |
2367 | { | |
2368 | warning (_("target object %d, annex %s, " | |
2369 | "contained unexpected null characters"), | |
2370 | (int) object, annex ? annex : "(none)"); | |
2371 | break; | |
2372 | } | |
159f81f3 DJ |
2373 | |
2374 | return (char *) buffer; | |
2375 | } | |
2376 | ||
b6591e8b AC |
2377 | /* Memory transfer methods. */ |
2378 | ||
2379 | void | |
1b0ba102 | 2380 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
2381 | LONGEST len) |
2382 | { | |
07b82ea5 PA |
2383 | /* This method is used to read from an alternate, non-current |
2384 | target. This read must bypass the overlay support (as symbols | |
2385 | don't match this target), and GDB's internal cache (wrong cache | |
2386 | for this target). */ | |
2387 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) | |
b6591e8b AC |
2388 | != len) |
2389 | memory_error (EIO, addr); | |
2390 | } | |
2391 | ||
2392 | ULONGEST | |
5d502164 MS |
2393 | get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr, |
2394 | int len, enum bfd_endian byte_order) | |
b6591e8b | 2395 | { |
f6519ebc | 2396 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
2397 | |
2398 | gdb_assert (len <= sizeof (buf)); | |
2399 | get_target_memory (ops, addr, buf, len); | |
e17a4113 | 2400 | return extract_unsigned_integer (buf, len, byte_order); |
b6591e8b AC |
2401 | } |
2402 | ||
d914c394 SS |
2403 | int |
2404 | target_insert_breakpoint (struct gdbarch *gdbarch, | |
2405 | struct bp_target_info *bp_tgt) | |
2406 | { | |
2407 | if (!may_insert_breakpoints) | |
2408 | { | |
2409 | warning (_("May not insert breakpoints")); | |
2410 | return 1; | |
2411 | } | |
2412 | ||
2413 | return (*current_target.to_insert_breakpoint) (gdbarch, bp_tgt); | |
2414 | } | |
2415 | ||
2416 | int | |
2417 | target_remove_breakpoint (struct gdbarch *gdbarch, | |
2418 | struct bp_target_info *bp_tgt) | |
2419 | { | |
2420 | /* This is kind of a weird case to handle, but the permission might | |
2421 | have been changed after breakpoints were inserted - in which case | |
2422 | we should just take the user literally and assume that any | |
2423 | breakpoints should be left in place. */ | |
2424 | if (!may_insert_breakpoints) | |
2425 | { | |
2426 | warning (_("May not remove breakpoints")); | |
2427 | return 1; | |
2428 | } | |
2429 | ||
2430 | return (*current_target.to_remove_breakpoint) (gdbarch, bp_tgt); | |
2431 | } | |
2432 | ||
c906108c | 2433 | static void |
fba45db2 | 2434 | target_info (char *args, int from_tty) |
c906108c SS |
2435 | { |
2436 | struct target_ops *t; | |
c906108c | 2437 | int has_all_mem = 0; |
c5aa993b | 2438 | |
c906108c | 2439 | if (symfile_objfile != NULL) |
a3f17187 | 2440 | printf_unfiltered (_("Symbols from \"%s\".\n"), symfile_objfile->name); |
c906108c | 2441 | |
258b763a | 2442 | for (t = target_stack; t != NULL; t = t->beneath) |
c906108c | 2443 | { |
c35b1492 | 2444 | if (!(*t->to_has_memory) (t)) |
c906108c SS |
2445 | continue; |
2446 | ||
c5aa993b | 2447 | if ((int) (t->to_stratum) <= (int) dummy_stratum) |
c906108c SS |
2448 | continue; |
2449 | if (has_all_mem) | |
3e43a32a MS |
2450 | printf_unfiltered (_("\tWhile running this, " |
2451 | "GDB does not access memory from...\n")); | |
c5aa993b JM |
2452 | printf_unfiltered ("%s:\n", t->to_longname); |
2453 | (t->to_files_info) (t); | |
c35b1492 | 2454 | has_all_mem = (*t->to_has_all_memory) (t); |
c906108c SS |
2455 | } |
2456 | } | |
2457 | ||
fd79ecee DJ |
2458 | /* This function is called before any new inferior is created, e.g. |
2459 | by running a program, attaching, or connecting to a target. | |
2460 | It cleans up any state from previous invocations which might | |
2461 | change between runs. This is a subset of what target_preopen | |
2462 | resets (things which might change between targets). */ | |
2463 | ||
2464 | void | |
2465 | target_pre_inferior (int from_tty) | |
2466 | { | |
c378eb4e | 2467 | /* Clear out solib state. Otherwise the solib state of the previous |
b9db4ced | 2468 | inferior might have survived and is entirely wrong for the new |
c378eb4e | 2469 | target. This has been observed on GNU/Linux using glibc 2.3. How |
b9db4ced UW |
2470 | to reproduce: |
2471 | ||
2472 | bash$ ./foo& | |
2473 | [1] 4711 | |
2474 | bash$ ./foo& | |
2475 | [1] 4712 | |
2476 | bash$ gdb ./foo | |
2477 | [...] | |
2478 | (gdb) attach 4711 | |
2479 | (gdb) detach | |
2480 | (gdb) attach 4712 | |
2481 | Cannot access memory at address 0xdeadbeef | |
2482 | */ | |
b9db4ced | 2483 | |
50c71eaf PA |
2484 | /* In some OSs, the shared library list is the same/global/shared |
2485 | across inferiors. If code is shared between processes, so are | |
2486 | memory regions and features. */ | |
2487 | if (!gdbarch_has_global_solist (target_gdbarch)) | |
2488 | { | |
2489 | no_shared_libraries (NULL, from_tty); | |
2490 | ||
2491 | invalidate_target_mem_regions (); | |
424163ea | 2492 | |
50c71eaf PA |
2493 | target_clear_description (); |
2494 | } | |
fd79ecee DJ |
2495 | } |
2496 | ||
b8fa0bfa PA |
2497 | /* Callback for iterate_over_inferiors. Gets rid of the given |
2498 | inferior. */ | |
2499 | ||
2500 | static int | |
2501 | dispose_inferior (struct inferior *inf, void *args) | |
2502 | { | |
2503 | struct thread_info *thread; | |
2504 | ||
2505 | thread = any_thread_of_process (inf->pid); | |
2506 | if (thread) | |
2507 | { | |
2508 | switch_to_thread (thread->ptid); | |
2509 | ||
2510 | /* Core inferiors actually should be detached, not killed. */ | |
2511 | if (target_has_execution) | |
2512 | target_kill (); | |
2513 | else | |
2514 | target_detach (NULL, 0); | |
2515 | } | |
2516 | ||
2517 | return 0; | |
2518 | } | |
2519 | ||
c906108c SS |
2520 | /* This is to be called by the open routine before it does |
2521 | anything. */ | |
2522 | ||
2523 | void | |
fba45db2 | 2524 | target_preopen (int from_tty) |
c906108c | 2525 | { |
c5aa993b | 2526 | dont_repeat (); |
c906108c | 2527 | |
b8fa0bfa | 2528 | if (have_inferiors ()) |
c5aa993b | 2529 | { |
adf40b2e | 2530 | if (!from_tty |
b8fa0bfa PA |
2531 | || !have_live_inferiors () |
2532 | || query (_("A program is being debugged already. Kill it? "))) | |
2533 | iterate_over_inferiors (dispose_inferior, NULL); | |
c906108c | 2534 | else |
8a3fe4f8 | 2535 | error (_("Program not killed.")); |
c906108c SS |
2536 | } |
2537 | ||
2538 | /* Calling target_kill may remove the target from the stack. But if | |
2539 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
2540 | /* Leave the exec target, though. The user may be switching from a |
2541 | live process to a core of the same program. */ | |
2542 | pop_all_targets_above (file_stratum, 0); | |
fd79ecee DJ |
2543 | |
2544 | target_pre_inferior (from_tty); | |
c906108c SS |
2545 | } |
2546 | ||
2547 | /* Detach a target after doing deferred register stores. */ | |
2548 | ||
2549 | void | |
fba45db2 | 2550 | target_detach (char *args, int from_tty) |
c906108c | 2551 | { |
136d6dae VP |
2552 | struct target_ops* t; |
2553 | ||
2567c7d9 | 2554 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
2555 | /* Don't remove global breakpoints here. They're removed on |
2556 | disconnection from the target. */ | |
2557 | ; | |
2558 | else | |
2559 | /* If we're in breakpoints-always-inserted mode, have to remove | |
2560 | them before detaching. */ | |
6c95b8df | 2561 | remove_breakpoints_pid (PIDGET (inferior_ptid)); |
74960c60 | 2562 | |
24291992 PA |
2563 | prepare_for_detach (); |
2564 | ||
136d6dae VP |
2565 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2566 | { | |
2567 | if (t->to_detach != NULL) | |
2568 | { | |
2569 | t->to_detach (t, args, from_tty); | |
947b8855 PA |
2570 | if (targetdebug) |
2571 | fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n", | |
2572 | args, from_tty); | |
136d6dae VP |
2573 | return; |
2574 | } | |
2575 | } | |
2576 | ||
9b20d036 | 2577 | internal_error (__FILE__, __LINE__, _("could not find a target to detach")); |
c906108c SS |
2578 | } |
2579 | ||
6ad8ae5c DJ |
2580 | void |
2581 | target_disconnect (char *args, int from_tty) | |
2582 | { | |
597320e7 DJ |
2583 | struct target_ops *t; |
2584 | ||
50c71eaf PA |
2585 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
2586 | are global across processes, we have to remove them before | |
2587 | disconnecting. */ | |
74960c60 VP |
2588 | remove_breakpoints (); |
2589 | ||
597320e7 DJ |
2590 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2591 | if (t->to_disconnect != NULL) | |
2592 | { | |
2593 | if (targetdebug) | |
2594 | fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n", | |
2595 | args, from_tty); | |
2596 | t->to_disconnect (t, args, from_tty); | |
2597 | return; | |
2598 | } | |
2599 | ||
2600 | tcomplain (); | |
6ad8ae5c DJ |
2601 | } |
2602 | ||
117de6a9 | 2603 | ptid_t |
47608cb1 | 2604 | target_wait (ptid_t ptid, struct target_waitstatus *status, int options) |
117de6a9 PA |
2605 | { |
2606 | struct target_ops *t; | |
2607 | ||
2608 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2609 | { | |
2610 | if (t->to_wait != NULL) | |
2611 | { | |
47608cb1 | 2612 | ptid_t retval = (*t->to_wait) (t, ptid, status, options); |
117de6a9 PA |
2613 | |
2614 | if (targetdebug) | |
2615 | { | |
2616 | char *status_string; | |
2617 | ||
2618 | status_string = target_waitstatus_to_string (status); | |
2619 | fprintf_unfiltered (gdb_stdlog, | |
2620 | "target_wait (%d, status) = %d, %s\n", | |
2621 | PIDGET (ptid), PIDGET (retval), | |
2622 | status_string); | |
2623 | xfree (status_string); | |
2624 | } | |
2625 | ||
2626 | return retval; | |
2627 | } | |
2628 | } | |
2629 | ||
2630 | noprocess (); | |
2631 | } | |
2632 | ||
2633 | char * | |
2634 | target_pid_to_str (ptid_t ptid) | |
2635 | { | |
2636 | struct target_ops *t; | |
2637 | ||
2638 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2639 | { | |
2640 | if (t->to_pid_to_str != NULL) | |
2641 | return (*t->to_pid_to_str) (t, ptid); | |
2642 | } | |
2643 | ||
2644 | return normal_pid_to_str (ptid); | |
2645 | } | |
2646 | ||
4694da01 TT |
2647 | char * |
2648 | target_thread_name (struct thread_info *info) | |
2649 | { | |
2650 | struct target_ops *t; | |
2651 | ||
2652 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2653 | { | |
2654 | if (t->to_thread_name != NULL) | |
2655 | return (*t->to_thread_name) (info); | |
2656 | } | |
2657 | ||
2658 | return NULL; | |
2659 | } | |
2660 | ||
e1ac3328 VP |
2661 | void |
2662 | target_resume (ptid_t ptid, int step, enum target_signal signal) | |
2663 | { | |
28439f5e PA |
2664 | struct target_ops *t; |
2665 | ||
4e5d721f | 2666 | target_dcache_invalidate (); |
28439f5e PA |
2667 | |
2668 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2669 | { | |
2670 | if (t->to_resume != NULL) | |
2671 | { | |
2672 | t->to_resume (t, ptid, step, signal); | |
2673 | if (targetdebug) | |
2674 | fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n", | |
2675 | PIDGET (ptid), | |
2676 | step ? "step" : "continue", | |
2677 | target_signal_to_name (signal)); | |
2678 | ||
e66408ed | 2679 | registers_changed_ptid (ptid); |
28439f5e PA |
2680 | set_executing (ptid, 1); |
2681 | set_running (ptid, 1); | |
edb3359d | 2682 | clear_inline_frame_state (ptid); |
28439f5e PA |
2683 | return; |
2684 | } | |
2685 | } | |
2686 | ||
2687 | noprocess (); | |
e1ac3328 | 2688 | } |
2455069d UW |
2689 | |
2690 | void | |
2691 | target_pass_signals (int numsigs, unsigned char *pass_signals) | |
2692 | { | |
2693 | struct target_ops *t; | |
2694 | ||
2695 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2696 | { | |
2697 | if (t->to_pass_signals != NULL) | |
2698 | { | |
2699 | if (targetdebug) | |
2700 | { | |
2701 | int i; | |
2702 | ||
2703 | fprintf_unfiltered (gdb_stdlog, "target_pass_signals (%d, {", | |
2704 | numsigs); | |
2705 | ||
2706 | for (i = 0; i < numsigs; i++) | |
2707 | if (pass_signals[i]) | |
2708 | fprintf_unfiltered (gdb_stdlog, " %s", | |
2709 | target_signal_to_name (i)); | |
2710 | ||
2711 | fprintf_unfiltered (gdb_stdlog, " })\n"); | |
2712 | } | |
2713 | ||
2714 | (*t->to_pass_signals) (numsigs, pass_signals); | |
2715 | return; | |
2716 | } | |
2717 | } | |
2718 | } | |
2719 | ||
ee057212 DJ |
2720 | /* Look through the list of possible targets for a target that can |
2721 | follow forks. */ | |
2722 | ||
2723 | int | |
2724 | target_follow_fork (int follow_child) | |
2725 | { | |
2726 | struct target_ops *t; | |
2727 | ||
2728 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2729 | { | |
2730 | if (t->to_follow_fork != NULL) | |
2731 | { | |
2732 | int retval = t->to_follow_fork (t, follow_child); | |
5d502164 | 2733 | |
ee057212 DJ |
2734 | if (targetdebug) |
2735 | fprintf_unfiltered (gdb_stdlog, "target_follow_fork (%d) = %d\n", | |
2736 | follow_child, retval); | |
2737 | return retval; | |
2738 | } | |
2739 | } | |
2740 | ||
2741 | /* Some target returned a fork event, but did not know how to follow it. */ | |
2742 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 2743 | _("could not find a target to follow fork")); |
ee057212 DJ |
2744 | } |
2745 | ||
136d6dae VP |
2746 | void |
2747 | target_mourn_inferior (void) | |
2748 | { | |
2749 | struct target_ops *t; | |
5d502164 | 2750 | |
136d6dae VP |
2751 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2752 | { | |
2753 | if (t->to_mourn_inferior != NULL) | |
2754 | { | |
2755 | t->to_mourn_inferior (t); | |
947b8855 PA |
2756 | if (targetdebug) |
2757 | fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n"); | |
efbd6e75 JB |
2758 | |
2759 | /* We no longer need to keep handles on any of the object files. | |
2760 | Make sure to release them to avoid unnecessarily locking any | |
2761 | of them while we're not actually debugging. */ | |
2762 | bfd_cache_close_all (); | |
2763 | ||
136d6dae VP |
2764 | return; |
2765 | } | |
2766 | } | |
2767 | ||
2768 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 2769 | _("could not find a target to follow mourn inferior")); |
136d6dae VP |
2770 | } |
2771 | ||
424163ea DJ |
2772 | /* Look for a target which can describe architectural features, starting |
2773 | from TARGET. If we find one, return its description. */ | |
2774 | ||
2775 | const struct target_desc * | |
2776 | target_read_description (struct target_ops *target) | |
2777 | { | |
2778 | struct target_ops *t; | |
2779 | ||
2780 | for (t = target; t != NULL; t = t->beneath) | |
2781 | if (t->to_read_description != NULL) | |
2782 | { | |
2783 | const struct target_desc *tdesc; | |
2784 | ||
2785 | tdesc = t->to_read_description (t); | |
2786 | if (tdesc) | |
2787 | return tdesc; | |
2788 | } | |
2789 | ||
2790 | return NULL; | |
2791 | } | |
2792 | ||
08388c79 DE |
2793 | /* The default implementation of to_search_memory. |
2794 | This implements a basic search of memory, reading target memory and | |
2795 | performing the search here (as opposed to performing the search in on the | |
2796 | target side with, for example, gdbserver). */ | |
2797 | ||
2798 | int | |
2799 | simple_search_memory (struct target_ops *ops, | |
2800 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2801 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2802 | CORE_ADDR *found_addrp) | |
2803 | { | |
2804 | /* NOTE: also defined in find.c testcase. */ | |
2805 | #define SEARCH_CHUNK_SIZE 16000 | |
2806 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
2807 | /* Buffer to hold memory contents for searching. */ | |
2808 | gdb_byte *search_buf; | |
2809 | unsigned search_buf_size; | |
2810 | struct cleanup *old_cleanups; | |
2811 | ||
2812 | search_buf_size = chunk_size + pattern_len - 1; | |
2813 | ||
2814 | /* No point in trying to allocate a buffer larger than the search space. */ | |
2815 | if (search_space_len < search_buf_size) | |
2816 | search_buf_size = search_space_len; | |
2817 | ||
2818 | search_buf = malloc (search_buf_size); | |
2819 | if (search_buf == NULL) | |
5e1471f5 | 2820 | error (_("Unable to allocate memory to perform the search.")); |
08388c79 DE |
2821 | old_cleanups = make_cleanup (free_current_contents, &search_buf); |
2822 | ||
2823 | /* Prime the search buffer. */ | |
2824 | ||
2825 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2826 | search_buf, start_addr, search_buf_size) != search_buf_size) | |
2827 | { | |
5e1471f5 | 2828 | warning (_("Unable to access target memory at %s, halting search."), |
08388c79 DE |
2829 | hex_string (start_addr)); |
2830 | do_cleanups (old_cleanups); | |
2831 | return -1; | |
2832 | } | |
2833 | ||
2834 | /* Perform the search. | |
2835 | ||
2836 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
2837 | When we've scanned N bytes we copy the trailing bytes to the start and | |
2838 | read in another N bytes. */ | |
2839 | ||
2840 | while (search_space_len >= pattern_len) | |
2841 | { | |
2842 | gdb_byte *found_ptr; | |
2843 | unsigned nr_search_bytes = min (search_space_len, search_buf_size); | |
2844 | ||
2845 | found_ptr = memmem (search_buf, nr_search_bytes, | |
2846 | pattern, pattern_len); | |
2847 | ||
2848 | if (found_ptr != NULL) | |
2849 | { | |
2850 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
5d502164 | 2851 | |
08388c79 DE |
2852 | *found_addrp = found_addr; |
2853 | do_cleanups (old_cleanups); | |
2854 | return 1; | |
2855 | } | |
2856 | ||
2857 | /* Not found in this chunk, skip to next chunk. */ | |
2858 | ||
2859 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
2860 | if (search_space_len >= chunk_size) | |
2861 | search_space_len -= chunk_size; | |
2862 | else | |
2863 | search_space_len = 0; | |
2864 | ||
2865 | if (search_space_len >= pattern_len) | |
2866 | { | |
2867 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 2868 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
2869 | int nr_to_read; |
2870 | ||
2871 | /* Copy the trailing part of the previous iteration to the front | |
2872 | of the buffer for the next iteration. */ | |
2873 | gdb_assert (keep_len == pattern_len - 1); | |
2874 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
2875 | ||
2876 | nr_to_read = min (search_space_len - keep_len, chunk_size); | |
2877 | ||
2878 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2879 | search_buf + keep_len, read_addr, | |
2880 | nr_to_read) != nr_to_read) | |
2881 | { | |
9b20d036 MS |
2882 | warning (_("Unable to access target " |
2883 | "memory at %s, halting search."), | |
08388c79 DE |
2884 | hex_string (read_addr)); |
2885 | do_cleanups (old_cleanups); | |
2886 | return -1; | |
2887 | } | |
2888 | ||
2889 | start_addr += chunk_size; | |
2890 | } | |
2891 | } | |
2892 | ||
2893 | /* Not found. */ | |
2894 | ||
2895 | do_cleanups (old_cleanups); | |
2896 | return 0; | |
2897 | } | |
2898 | ||
2899 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the | |
2900 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2901 | ||
2902 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2903 | requiring halting of the search (e.g. memory read error). | |
2904 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2905 | ||
2906 | int | |
2907 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2908 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2909 | CORE_ADDR *found_addrp) | |
2910 | { | |
2911 | struct target_ops *t; | |
2912 | int found; | |
2913 | ||
2914 | /* We don't use INHERIT to set current_target.to_search_memory, | |
2915 | so we have to scan the target stack and handle targetdebug | |
2916 | ourselves. */ | |
2917 | ||
2918 | if (targetdebug) | |
2919 | fprintf_unfiltered (gdb_stdlog, "target_search_memory (%s, ...)\n", | |
2920 | hex_string (start_addr)); | |
2921 | ||
2922 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2923 | if (t->to_search_memory != NULL) | |
2924 | break; | |
2925 | ||
2926 | if (t != NULL) | |
2927 | { | |
2928 | found = t->to_search_memory (t, start_addr, search_space_len, | |
2929 | pattern, pattern_len, found_addrp); | |
2930 | } | |
2931 | else | |
2932 | { | |
2933 | /* If a special version of to_search_memory isn't available, use the | |
2934 | simple version. */ | |
c35b1492 | 2935 | found = simple_search_memory (current_target.beneath, |
08388c79 DE |
2936 | start_addr, search_space_len, |
2937 | pattern, pattern_len, found_addrp); | |
2938 | } | |
2939 | ||
2940 | if (targetdebug) | |
2941 | fprintf_unfiltered (gdb_stdlog, " = %d\n", found); | |
2942 | ||
2943 | return found; | |
2944 | } | |
2945 | ||
8edfe269 DJ |
2946 | /* Look through the currently pushed targets. If none of them will |
2947 | be able to restart the currently running process, issue an error | |
2948 | message. */ | |
2949 | ||
2950 | void | |
2951 | target_require_runnable (void) | |
2952 | { | |
2953 | struct target_ops *t; | |
2954 | ||
2955 | for (t = target_stack; t != NULL; t = t->beneath) | |
2956 | { | |
2957 | /* If this target knows how to create a new program, then | |
2958 | assume we will still be able to after killing the current | |
2959 | one. Either killing and mourning will not pop T, or else | |
2960 | find_default_run_target will find it again. */ | |
2961 | if (t->to_create_inferior != NULL) | |
2962 | return; | |
2963 | ||
2964 | /* Do not worry about thread_stratum targets that can not | |
2965 | create inferiors. Assume they will be pushed again if | |
2966 | necessary, and continue to the process_stratum. */ | |
85e747d2 UW |
2967 | if (t->to_stratum == thread_stratum |
2968 | || t->to_stratum == arch_stratum) | |
8edfe269 DJ |
2969 | continue; |
2970 | ||
3e43a32a MS |
2971 | error (_("The \"%s\" target does not support \"run\". " |
2972 | "Try \"help target\" or \"continue\"."), | |
8edfe269 DJ |
2973 | t->to_shortname); |
2974 | } | |
2975 | ||
2976 | /* This function is only called if the target is running. In that | |
2977 | case there should have been a process_stratum target and it | |
c378eb4e | 2978 | should either know how to create inferiors, or not... */ |
9b20d036 | 2979 | internal_error (__FILE__, __LINE__, _("No targets found")); |
8edfe269 DJ |
2980 | } |
2981 | ||
c906108c SS |
2982 | /* Look through the list of possible targets for a target that can |
2983 | execute a run or attach command without any other data. This is | |
2984 | used to locate the default process stratum. | |
2985 | ||
5f667f2d PA |
2986 | If DO_MESG is not NULL, the result is always valid (error() is |
2987 | called for errors); else, return NULL on error. */ | |
c906108c SS |
2988 | |
2989 | static struct target_ops * | |
fba45db2 | 2990 | find_default_run_target (char *do_mesg) |
c906108c SS |
2991 | { |
2992 | struct target_ops **t; | |
2993 | struct target_ops *runable = NULL; | |
2994 | int count; | |
2995 | ||
2996 | count = 0; | |
2997 | ||
2998 | for (t = target_structs; t < target_structs + target_struct_size; | |
2999 | ++t) | |
3000 | { | |
c5aa993b | 3001 | if ((*t)->to_can_run && target_can_run (*t)) |
c906108c SS |
3002 | { |
3003 | runable = *t; | |
3004 | ++count; | |
3005 | } | |
3006 | } | |
3007 | ||
3008 | if (count != 1) | |
5f667f2d PA |
3009 | { |
3010 | if (do_mesg) | |
3011 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
3012 | else | |
3013 | return NULL; | |
3014 | } | |
c906108c SS |
3015 | |
3016 | return runable; | |
3017 | } | |
3018 | ||
3019 | void | |
136d6dae | 3020 | find_default_attach (struct target_ops *ops, char *args, int from_tty) |
c906108c SS |
3021 | { |
3022 | struct target_ops *t; | |
3023 | ||
c5aa993b | 3024 | t = find_default_run_target ("attach"); |
136d6dae | 3025 | (t->to_attach) (t, args, from_tty); |
c906108c SS |
3026 | return; |
3027 | } | |
3028 | ||
c906108c | 3029 | void |
136d6dae VP |
3030 | find_default_create_inferior (struct target_ops *ops, |
3031 | char *exec_file, char *allargs, char **env, | |
c27cda74 | 3032 | int from_tty) |
c906108c SS |
3033 | { |
3034 | struct target_ops *t; | |
3035 | ||
c5aa993b | 3036 | t = find_default_run_target ("run"); |
136d6dae | 3037 | (t->to_create_inferior) (t, exec_file, allargs, env, from_tty); |
c906108c SS |
3038 | return; |
3039 | } | |
3040 | ||
2c0b251b | 3041 | static int |
b84876c2 PA |
3042 | find_default_can_async_p (void) |
3043 | { | |
3044 | struct target_ops *t; | |
3045 | ||
5f667f2d PA |
3046 | /* This may be called before the target is pushed on the stack; |
3047 | look for the default process stratum. If there's none, gdb isn't | |
3048 | configured with a native debugger, and target remote isn't | |
3049 | connected yet. */ | |
3050 | t = find_default_run_target (NULL); | |
3051 | if (t && t->to_can_async_p) | |
b84876c2 PA |
3052 | return (t->to_can_async_p) (); |
3053 | return 0; | |
3054 | } | |
3055 | ||
2c0b251b | 3056 | static int |
b84876c2 PA |
3057 | find_default_is_async_p (void) |
3058 | { | |
3059 | struct target_ops *t; | |
3060 | ||
5f667f2d PA |
3061 | /* This may be called before the target is pushed on the stack; |
3062 | look for the default process stratum. If there's none, gdb isn't | |
3063 | configured with a native debugger, and target remote isn't | |
3064 | connected yet. */ | |
3065 | t = find_default_run_target (NULL); | |
3066 | if (t && t->to_is_async_p) | |
b84876c2 PA |
3067 | return (t->to_is_async_p) (); |
3068 | return 0; | |
3069 | } | |
3070 | ||
2c0b251b | 3071 | static int |
9908b566 VP |
3072 | find_default_supports_non_stop (void) |
3073 | { | |
3074 | struct target_ops *t; | |
3075 | ||
3076 | t = find_default_run_target (NULL); | |
3077 | if (t && t->to_supports_non_stop) | |
3078 | return (t->to_supports_non_stop) (); | |
3079 | return 0; | |
3080 | } | |
3081 | ||
3082 | int | |
2c0b251b | 3083 | target_supports_non_stop (void) |
9908b566 VP |
3084 | { |
3085 | struct target_ops *t; | |
5d502164 | 3086 | |
9908b566 VP |
3087 | for (t = ¤t_target; t != NULL; t = t->beneath) |
3088 | if (t->to_supports_non_stop) | |
3089 | return t->to_supports_non_stop (); | |
3090 | ||
3091 | return 0; | |
3092 | } | |
3093 | ||
145b16a9 UW |
3094 | /* Implement the "info proc" command. */ |
3095 | ||
3096 | void | |
3097 | target_info_proc (char *args, enum info_proc_what what) | |
3098 | { | |
3099 | struct target_ops *t; | |
3100 | ||
3101 | /* If we're already connected to something that can get us OS | |
3102 | related data, use it. Otherwise, try using the native | |
3103 | target. */ | |
3104 | if (current_target.to_stratum >= process_stratum) | |
3105 | t = current_target.beneath; | |
3106 | else | |
3107 | t = find_default_run_target (NULL); | |
3108 | ||
3109 | for (; t != NULL; t = t->beneath) | |
3110 | { | |
3111 | if (t->to_info_proc != NULL) | |
3112 | { | |
3113 | t->to_info_proc (t, args, what); | |
3114 | ||
3115 | if (targetdebug) | |
3116 | fprintf_unfiltered (gdb_stdlog, | |
3117 | "target_info_proc (\"%s\", %d)\n", args, what); | |
3118 | ||
3119 | return; | |
3120 | } | |
3121 | } | |
3122 | ||
3123 | error (_("Not supported on this target.")); | |
3124 | } | |
3125 | ||
03583c20 UW |
3126 | static int |
3127 | find_default_supports_disable_randomization (void) | |
3128 | { | |
3129 | struct target_ops *t; | |
3130 | ||
3131 | t = find_default_run_target (NULL); | |
3132 | if (t && t->to_supports_disable_randomization) | |
3133 | return (t->to_supports_disable_randomization) (); | |
3134 | return 0; | |
3135 | } | |
3136 | ||
3137 | int | |
3138 | target_supports_disable_randomization (void) | |
3139 | { | |
3140 | struct target_ops *t; | |
3141 | ||
3142 | for (t = ¤t_target; t != NULL; t = t->beneath) | |
3143 | if (t->to_supports_disable_randomization) | |
3144 | return t->to_supports_disable_randomization (); | |
3145 | ||
3146 | return 0; | |
3147 | } | |
9908b566 | 3148 | |
07e059b5 VP |
3149 | char * |
3150 | target_get_osdata (const char *type) | |
3151 | { | |
07e059b5 VP |
3152 | struct target_ops *t; |
3153 | ||
739ef7fb PA |
3154 | /* If we're already connected to something that can get us OS |
3155 | related data, use it. Otherwise, try using the native | |
3156 | target. */ | |
3157 | if (current_target.to_stratum >= process_stratum) | |
6d097e65 | 3158 | t = current_target.beneath; |
739ef7fb PA |
3159 | else |
3160 | t = find_default_run_target ("get OS data"); | |
07e059b5 VP |
3161 | |
3162 | if (!t) | |
3163 | return NULL; | |
3164 | ||
6d097e65 | 3165 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
3166 | } |
3167 | ||
6c95b8df PA |
3168 | /* Determine the current address space of thread PTID. */ |
3169 | ||
3170 | struct address_space * | |
3171 | target_thread_address_space (ptid_t ptid) | |
3172 | { | |
c0694254 | 3173 | struct address_space *aspace; |
6c95b8df | 3174 | struct inferior *inf; |
c0694254 PA |
3175 | struct target_ops *t; |
3176 | ||
3177 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3178 | { | |
3179 | if (t->to_thread_address_space != NULL) | |
3180 | { | |
3181 | aspace = t->to_thread_address_space (t, ptid); | |
3182 | gdb_assert (aspace); | |
6c95b8df | 3183 | |
c0694254 PA |
3184 | if (targetdebug) |
3185 | fprintf_unfiltered (gdb_stdlog, | |
3186 | "target_thread_address_space (%s) = %d\n", | |
3187 | target_pid_to_str (ptid), | |
3188 | address_space_num (aspace)); | |
3189 | return aspace; | |
3190 | } | |
3191 | } | |
6c95b8df PA |
3192 | |
3193 | /* Fall-back to the "main" address space of the inferior. */ | |
3194 | inf = find_inferior_pid (ptid_get_pid (ptid)); | |
3195 | ||
3196 | if (inf == NULL || inf->aspace == NULL) | |
3e43a32a | 3197 | internal_error (__FILE__, __LINE__, |
9b20d036 MS |
3198 | _("Can't determine the current " |
3199 | "address space of thread %s\n"), | |
6c95b8df PA |
3200 | target_pid_to_str (ptid)); |
3201 | ||
3202 | return inf->aspace; | |
3203 | } | |
3204 | ||
7313baad UW |
3205 | |
3206 | /* Target file operations. */ | |
3207 | ||
3208 | static struct target_ops * | |
3209 | default_fileio_target (void) | |
3210 | { | |
3211 | /* If we're already connected to something that can perform | |
3212 | file I/O, use it. Otherwise, try using the native target. */ | |
3213 | if (current_target.to_stratum >= process_stratum) | |
3214 | return current_target.beneath; | |
3215 | else | |
3216 | return find_default_run_target ("file I/O"); | |
3217 | } | |
3218 | ||
3219 | /* Open FILENAME on the target, using FLAGS and MODE. Return a | |
3220 | target file descriptor, or -1 if an error occurs (and set | |
3221 | *TARGET_ERRNO). */ | |
3222 | int | |
3223 | target_fileio_open (const char *filename, int flags, int mode, | |
3224 | int *target_errno) | |
3225 | { | |
3226 | struct target_ops *t; | |
3227 | ||
3228 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3229 | { | |
3230 | if (t->to_fileio_open != NULL) | |
3231 | { | |
3232 | int fd = t->to_fileio_open (filename, flags, mode, target_errno); | |
3233 | ||
3234 | if (targetdebug) | |
3235 | fprintf_unfiltered (gdb_stdlog, | |
3236 | "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n", | |
3237 | filename, flags, mode, | |
3238 | fd, fd != -1 ? 0 : *target_errno); | |
3239 | return fd; | |
3240 | } | |
3241 | } | |
3242 | ||
3243 | *target_errno = FILEIO_ENOSYS; | |
3244 | return -1; | |
3245 | } | |
3246 | ||
3247 | /* Write up to LEN bytes from WRITE_BUF to FD on the target. | |
3248 | Return the number of bytes written, or -1 if an error occurs | |
3249 | (and set *TARGET_ERRNO). */ | |
3250 | int | |
3251 | target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
3252 | ULONGEST offset, int *target_errno) | |
3253 | { | |
3254 | struct target_ops *t; | |
3255 | ||
3256 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3257 | { | |
3258 | if (t->to_fileio_pwrite != NULL) | |
3259 | { | |
3260 | int ret = t->to_fileio_pwrite (fd, write_buf, len, offset, | |
3261 | target_errno); | |
3262 | ||
3263 | if (targetdebug) | |
3264 | fprintf_unfiltered (gdb_stdlog, | |
a71b5a38 | 3265 | "target_fileio_pwrite (%d,...,%d,%s) " |
7313baad | 3266 | "= %d (%d)\n", |
a71b5a38 | 3267 | fd, len, pulongest (offset), |
7313baad UW |
3268 | ret, ret != -1 ? 0 : *target_errno); |
3269 | return ret; | |
3270 | } | |
3271 | } | |
3272 | ||
3273 | *target_errno = FILEIO_ENOSYS; | |
3274 | return -1; | |
3275 | } | |
3276 | ||
3277 | /* Read up to LEN bytes FD on the target into READ_BUF. | |
3278 | Return the number of bytes read, or -1 if an error occurs | |
3279 | (and set *TARGET_ERRNO). */ | |
3280 | int | |
3281 | target_fileio_pread (int fd, gdb_byte *read_buf, int len, | |
3282 | ULONGEST offset, int *target_errno) | |
3283 | { | |
3284 | struct target_ops *t; | |
3285 | ||
3286 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3287 | { | |
3288 | if (t->to_fileio_pread != NULL) | |
3289 | { | |
3290 | int ret = t->to_fileio_pread (fd, read_buf, len, offset, | |
3291 | target_errno); | |
3292 | ||
3293 | if (targetdebug) | |
3294 | fprintf_unfiltered (gdb_stdlog, | |
a71b5a38 | 3295 | "target_fileio_pread (%d,...,%d,%s) " |
7313baad | 3296 | "= %d (%d)\n", |
a71b5a38 | 3297 | fd, len, pulongest (offset), |
7313baad UW |
3298 | ret, ret != -1 ? 0 : *target_errno); |
3299 | return ret; | |
3300 | } | |
3301 | } | |
3302 | ||
3303 | *target_errno = FILEIO_ENOSYS; | |
3304 | return -1; | |
3305 | } | |
3306 | ||
3307 | /* Close FD on the target. Return 0, or -1 if an error occurs | |
3308 | (and set *TARGET_ERRNO). */ | |
3309 | int | |
3310 | target_fileio_close (int fd, int *target_errno) | |
3311 | { | |
3312 | struct target_ops *t; | |
3313 | ||
3314 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3315 | { | |
3316 | if (t->to_fileio_close != NULL) | |
3317 | { | |
3318 | int ret = t->to_fileio_close (fd, target_errno); | |
3319 | ||
3320 | if (targetdebug) | |
3321 | fprintf_unfiltered (gdb_stdlog, | |
3322 | "target_fileio_close (%d) = %d (%d)\n", | |
3323 | fd, ret, ret != -1 ? 0 : *target_errno); | |
3324 | return ret; | |
3325 | } | |
3326 | } | |
3327 | ||
3328 | *target_errno = FILEIO_ENOSYS; | |
3329 | return -1; | |
3330 | } | |
3331 | ||
3332 | /* Unlink FILENAME on the target. Return 0, or -1 if an error | |
3333 | occurs (and set *TARGET_ERRNO). */ | |
3334 | int | |
3335 | target_fileio_unlink (const char *filename, int *target_errno) | |
3336 | { | |
3337 | struct target_ops *t; | |
3338 | ||
3339 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3340 | { | |
3341 | if (t->to_fileio_unlink != NULL) | |
3342 | { | |
3343 | int ret = t->to_fileio_unlink (filename, target_errno); | |
3344 | ||
3345 | if (targetdebug) | |
3346 | fprintf_unfiltered (gdb_stdlog, | |
3347 | "target_fileio_unlink (%s) = %d (%d)\n", | |
3348 | filename, ret, ret != -1 ? 0 : *target_errno); | |
3349 | return ret; | |
3350 | } | |
3351 | } | |
3352 | ||
3353 | *target_errno = FILEIO_ENOSYS; | |
3354 | return -1; | |
3355 | } | |
3356 | ||
b9e7b9c3 UW |
3357 | /* Read value of symbolic link FILENAME on the target. Return a |
3358 | null-terminated string allocated via xmalloc, or NULL if an error | |
3359 | occurs (and set *TARGET_ERRNO). */ | |
3360 | char * | |
3361 | target_fileio_readlink (const char *filename, int *target_errno) | |
3362 | { | |
3363 | struct target_ops *t; | |
3364 | ||
3365 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3366 | { | |
3367 | if (t->to_fileio_readlink != NULL) | |
3368 | { | |
3369 | char *ret = t->to_fileio_readlink (filename, target_errno); | |
3370 | ||
3371 | if (targetdebug) | |
3372 | fprintf_unfiltered (gdb_stdlog, | |
3373 | "target_fileio_readlink (%s) = %s (%d)\n", | |
3374 | filename, ret? ret : "(nil)", | |
3375 | ret? 0 : *target_errno); | |
3376 | return ret; | |
3377 | } | |
3378 | } | |
3379 | ||
3380 | *target_errno = FILEIO_ENOSYS; | |
3381 | return NULL; | |
3382 | } | |
3383 | ||
7313baad UW |
3384 | static void |
3385 | target_fileio_close_cleanup (void *opaque) | |
3386 | { | |
3387 | int fd = *(int *) opaque; | |
3388 | int target_errno; | |
3389 | ||
3390 | target_fileio_close (fd, &target_errno); | |
3391 | } | |
3392 | ||
3393 | /* Read target file FILENAME. Store the result in *BUF_P and | |
3394 | return the size of the transferred data. PADDING additional bytes are | |
3395 | available in *BUF_P. This is a helper function for | |
3396 | target_fileio_read_alloc; see the declaration of that function for more | |
3397 | information. */ | |
3398 | ||
3399 | static LONGEST | |
3400 | target_fileio_read_alloc_1 (const char *filename, | |
3401 | gdb_byte **buf_p, int padding) | |
3402 | { | |
3403 | struct cleanup *close_cleanup; | |
3404 | size_t buf_alloc, buf_pos; | |
3405 | gdb_byte *buf; | |
3406 | LONGEST n; | |
3407 | int fd; | |
3408 | int target_errno; | |
3409 | ||
3410 | fd = target_fileio_open (filename, FILEIO_O_RDONLY, 0700, &target_errno); | |
3411 | if (fd == -1) | |
3412 | return -1; | |
3413 | ||
3414 | close_cleanup = make_cleanup (target_fileio_close_cleanup, &fd); | |
3415 | ||
3416 | /* Start by reading up to 4K at a time. The target will throttle | |
3417 | this number down if necessary. */ | |
3418 | buf_alloc = 4096; | |
3419 | buf = xmalloc (buf_alloc); | |
3420 | buf_pos = 0; | |
3421 | while (1) | |
3422 | { | |
3423 | n = target_fileio_pread (fd, &buf[buf_pos], | |
3424 | buf_alloc - buf_pos - padding, buf_pos, | |
3425 | &target_errno); | |
3426 | if (n < 0) | |
3427 | { | |
3428 | /* An error occurred. */ | |
3429 | do_cleanups (close_cleanup); | |
3430 | xfree (buf); | |
3431 | return -1; | |
3432 | } | |
3433 | else if (n == 0) | |
3434 | { | |
3435 | /* Read all there was. */ | |
3436 | do_cleanups (close_cleanup); | |
3437 | if (buf_pos == 0) | |
3438 | xfree (buf); | |
3439 | else | |
3440 | *buf_p = buf; | |
3441 | return buf_pos; | |
3442 | } | |
3443 | ||
3444 | buf_pos += n; | |
3445 | ||
3446 | /* If the buffer is filling up, expand it. */ | |
3447 | if (buf_alloc < buf_pos * 2) | |
3448 | { | |
3449 | buf_alloc *= 2; | |
3450 | buf = xrealloc (buf, buf_alloc); | |
3451 | } | |
3452 | ||
3453 | QUIT; | |
3454 | } | |
3455 | } | |
3456 | ||
3457 | /* Read target file FILENAME. Store the result in *BUF_P and return | |
3458 | the size of the transferred data. See the declaration in "target.h" | |
3459 | function for more information about the return value. */ | |
3460 | ||
3461 | LONGEST | |
3462 | target_fileio_read_alloc (const char *filename, gdb_byte **buf_p) | |
3463 | { | |
3464 | return target_fileio_read_alloc_1 (filename, buf_p, 0); | |
3465 | } | |
3466 | ||
3467 | /* Read target file FILENAME. The result is NUL-terminated and | |
3468 | returned as a string, allocated using xmalloc. If an error occurs | |
3469 | or the transfer is unsupported, NULL is returned. Empty objects | |
3470 | are returned as allocated but empty strings. A warning is issued | |
3471 | if the result contains any embedded NUL bytes. */ | |
3472 | ||
3473 | char * | |
3474 | target_fileio_read_stralloc (const char *filename) | |
3475 | { | |
3476 | gdb_byte *buffer; | |
3477 | LONGEST i, transferred; | |
3478 | ||
3479 | transferred = target_fileio_read_alloc_1 (filename, &buffer, 1); | |
3480 | ||
3481 | if (transferred < 0) | |
3482 | return NULL; | |
3483 | ||
3484 | if (transferred == 0) | |
3485 | return xstrdup (""); | |
3486 | ||
3487 | buffer[transferred] = 0; | |
3488 | ||
3489 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
3490 | for (i = strlen (buffer); i < transferred; i++) | |
3491 | if (buffer[i] != 0) | |
3492 | { | |
3493 | warning (_("target file %s " | |
3494 | "contained unexpected null characters"), | |
3495 | filename); | |
3496 | break; | |
3497 | } | |
3498 | ||
3499 | return (char *) buffer; | |
3500 | } | |
3501 | ||
3502 | ||
e0d24f8d WZ |
3503 | static int |
3504 | default_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
3505 | { | |
ffe5a37e | 3506 | return (len <= gdbarch_ptr_bit (target_gdbarch) / TARGET_CHAR_BIT); |
ccaa32c7 GS |
3507 | } |
3508 | ||
5009afc5 AS |
3509 | static int |
3510 | default_watchpoint_addr_within_range (struct target_ops *target, | |
3511 | CORE_ADDR addr, | |
3512 | CORE_ADDR start, int length) | |
3513 | { | |
3514 | return addr >= start && addr < start + length; | |
3515 | } | |
3516 | ||
c2250ad1 UW |
3517 | static struct gdbarch * |
3518 | default_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
3519 | { | |
3520 | return target_gdbarch; | |
3521 | } | |
3522 | ||
c906108c | 3523 | static int |
fba45db2 | 3524 | return_zero (void) |
c906108c SS |
3525 | { |
3526 | return 0; | |
3527 | } | |
3528 | ||
3529 | static int | |
fba45db2 | 3530 | return_one (void) |
c906108c SS |
3531 | { |
3532 | return 1; | |
3533 | } | |
3534 | ||
ccaa32c7 GS |
3535 | static int |
3536 | return_minus_one (void) | |
3537 | { | |
3538 | return -1; | |
3539 | } | |
3540 | ||
7a292a7a SS |
3541 | /* Find a single runnable target in the stack and return it. If for |
3542 | some reason there is more than one, return NULL. */ | |
3543 | ||
3544 | struct target_ops * | |
fba45db2 | 3545 | find_run_target (void) |
7a292a7a SS |
3546 | { |
3547 | struct target_ops **t; | |
3548 | struct target_ops *runable = NULL; | |
3549 | int count; | |
c5aa993b | 3550 | |
7a292a7a | 3551 | count = 0; |
c5aa993b | 3552 | |
7a292a7a SS |
3553 | for (t = target_structs; t < target_structs + target_struct_size; ++t) |
3554 | { | |
c5aa993b | 3555 | if ((*t)->to_can_run && target_can_run (*t)) |
7a292a7a SS |
3556 | { |
3557 | runable = *t; | |
3558 | ++count; | |
3559 | } | |
3560 | } | |
c5aa993b | 3561 | |
7a292a7a SS |
3562 | return (count == 1 ? runable : NULL); |
3563 | } | |
3564 | ||
ed9a39eb JM |
3565 | /* |
3566 | * Find the next target down the stack from the specified target. | |
3567 | */ | |
3568 | ||
3569 | struct target_ops * | |
fba45db2 | 3570 | find_target_beneath (struct target_ops *t) |
ed9a39eb | 3571 | { |
258b763a | 3572 | return t->beneath; |
ed9a39eb JM |
3573 | } |
3574 | ||
c906108c SS |
3575 | \f |
3576 | /* The inferior process has died. Long live the inferior! */ | |
3577 | ||
3578 | void | |
fba45db2 | 3579 | generic_mourn_inferior (void) |
c906108c | 3580 | { |
7f9f62ba | 3581 | ptid_t ptid; |
c906108c | 3582 | |
7f9f62ba | 3583 | ptid = inferior_ptid; |
39f77062 | 3584 | inferior_ptid = null_ptid; |
7f9f62ba PA |
3585 | |
3586 | if (!ptid_equal (ptid, null_ptid)) | |
3587 | { | |
3588 | int pid = ptid_get_pid (ptid); | |
6c95b8df | 3589 | exit_inferior (pid); |
7f9f62ba PA |
3590 | } |
3591 | ||
c906108c SS |
3592 | breakpoint_init_inferior (inf_exited); |
3593 | registers_changed (); | |
3594 | ||
c906108c SS |
3595 | reopen_exec_file (); |
3596 | reinit_frame_cache (); | |
3597 | ||
9a4105ab AC |
3598 | if (deprecated_detach_hook) |
3599 | deprecated_detach_hook (); | |
c906108c SS |
3600 | } |
3601 | \f | |
8807d78b | 3602 | /* Helper function for child_wait and the derivatives of child_wait. |
c906108c SS |
3603 | HOSTSTATUS is the waitstatus from wait() or the equivalent; store our |
3604 | translation of that in OURSTATUS. */ | |
3605 | void | |
fba45db2 | 3606 | store_waitstatus (struct target_waitstatus *ourstatus, int hoststatus) |
c906108c | 3607 | { |
c906108c SS |
3608 | if (WIFEXITED (hoststatus)) |
3609 | { | |
3610 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
3611 | ourstatus->value.integer = WEXITSTATUS (hoststatus); | |
3612 | } | |
3613 | else if (!WIFSTOPPED (hoststatus)) | |
3614 | { | |
3615 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
3616 | ourstatus->value.sig = target_signal_from_host (WTERMSIG (hoststatus)); | |
3617 | } | |
3618 | else | |
3619 | { | |
3620 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
3621 | ourstatus->value.sig = target_signal_from_host (WSTOPSIG (hoststatus)); | |
3622 | } | |
3623 | } | |
3624 | \f | |
fd0a2a6f MK |
3625 | /* Convert a normal process ID to a string. Returns the string in a |
3626 | static buffer. */ | |
c906108c SS |
3627 | |
3628 | char * | |
39f77062 | 3629 | normal_pid_to_str (ptid_t ptid) |
c906108c | 3630 | { |
fd0a2a6f | 3631 | static char buf[32]; |
c906108c | 3632 | |
5fff8fc0 | 3633 | xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid)); |
c906108c SS |
3634 | return buf; |
3635 | } | |
3636 | ||
2c0b251b | 3637 | static char * |
117de6a9 PA |
3638 | dummy_pid_to_str (struct target_ops *ops, ptid_t ptid) |
3639 | { | |
3640 | return normal_pid_to_str (ptid); | |
3641 | } | |
3642 | ||
9b4eba8e HZ |
3643 | /* Error-catcher for target_find_memory_regions. */ |
3644 | static int | |
b8edc417 | 3645 | dummy_find_memory_regions (find_memory_region_ftype ignore1, void *ignore2) |
be4d1333 | 3646 | { |
9b4eba8e | 3647 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3648 | return 0; |
3649 | } | |
3650 | ||
9b4eba8e HZ |
3651 | /* Error-catcher for target_make_corefile_notes. */ |
3652 | static char * | |
3653 | dummy_make_corefile_notes (bfd *ignore1, int *ignore2) | |
be4d1333 | 3654 | { |
9b4eba8e | 3655 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3656 | return NULL; |
3657 | } | |
3658 | ||
6b04bdb7 MS |
3659 | /* Error-catcher for target_get_bookmark. */ |
3660 | static gdb_byte * | |
3661 | dummy_get_bookmark (char *ignore1, int ignore2) | |
3662 | { | |
3663 | tcomplain (); | |
3664 | return NULL; | |
3665 | } | |
3666 | ||
3667 | /* Error-catcher for target_goto_bookmark. */ | |
3668 | static void | |
3669 | dummy_goto_bookmark (gdb_byte *ignore, int from_tty) | |
3670 | { | |
3671 | tcomplain (); | |
3672 | } | |
3673 | ||
c906108c SS |
3674 | /* Set up the handful of non-empty slots needed by the dummy target |
3675 | vector. */ | |
3676 | ||
3677 | static void | |
fba45db2 | 3678 | init_dummy_target (void) |
c906108c SS |
3679 | { |
3680 | dummy_target.to_shortname = "None"; | |
3681 | dummy_target.to_longname = "None"; | |
3682 | dummy_target.to_doc = ""; | |
3683 | dummy_target.to_attach = find_default_attach; | |
136d6dae VP |
3684 | dummy_target.to_detach = |
3685 | (void (*)(struct target_ops *, char *, int))target_ignore; | |
c906108c | 3686 | dummy_target.to_create_inferior = find_default_create_inferior; |
b84876c2 PA |
3687 | dummy_target.to_can_async_p = find_default_can_async_p; |
3688 | dummy_target.to_is_async_p = find_default_is_async_p; | |
9908b566 | 3689 | dummy_target.to_supports_non_stop = find_default_supports_non_stop; |
03583c20 UW |
3690 | dummy_target.to_supports_disable_randomization |
3691 | = find_default_supports_disable_randomization; | |
117de6a9 | 3692 | dummy_target.to_pid_to_str = dummy_pid_to_str; |
c906108c | 3693 | dummy_target.to_stratum = dummy_stratum; |
be4d1333 MS |
3694 | dummy_target.to_find_memory_regions = dummy_find_memory_regions; |
3695 | dummy_target.to_make_corefile_notes = dummy_make_corefile_notes; | |
6b04bdb7 MS |
3696 | dummy_target.to_get_bookmark = dummy_get_bookmark; |
3697 | dummy_target.to_goto_bookmark = dummy_goto_bookmark; | |
0b603eba | 3698 | dummy_target.to_xfer_partial = default_xfer_partial; |
c35b1492 PA |
3699 | dummy_target.to_has_all_memory = (int (*) (struct target_ops *)) return_zero; |
3700 | dummy_target.to_has_memory = (int (*) (struct target_ops *)) return_zero; | |
3701 | dummy_target.to_has_stack = (int (*) (struct target_ops *)) return_zero; | |
3702 | dummy_target.to_has_registers = (int (*) (struct target_ops *)) return_zero; | |
aeaec162 TT |
3703 | dummy_target.to_has_execution |
3704 | = (int (*) (struct target_ops *, ptid_t)) return_zero; | |
7155de5a HZ |
3705 | dummy_target.to_stopped_by_watchpoint = return_zero; |
3706 | dummy_target.to_stopped_data_address = | |
3707 | (int (*) (struct target_ops *, CORE_ADDR *)) return_zero; | |
c906108c SS |
3708 | dummy_target.to_magic = OPS_MAGIC; |
3709 | } | |
c906108c | 3710 | \f |
c906108c | 3711 | static void |
fba45db2 | 3712 | debug_to_open (char *args, int from_tty) |
c906108c SS |
3713 | { |
3714 | debug_target.to_open (args, from_tty); | |
3715 | ||
96baa820 | 3716 | fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty); |
c906108c SS |
3717 | } |
3718 | ||
f1c07ab0 AC |
3719 | void |
3720 | target_close (struct target_ops *targ, int quitting) | |
3721 | { | |
3722 | if (targ->to_xclose != NULL) | |
3723 | targ->to_xclose (targ, quitting); | |
3724 | else if (targ->to_close != NULL) | |
3725 | targ->to_close (quitting); | |
947b8855 PA |
3726 | |
3727 | if (targetdebug) | |
3728 | fprintf_unfiltered (gdb_stdlog, "target_close (%d)\n", quitting); | |
f1c07ab0 AC |
3729 | } |
3730 | ||
136d6dae VP |
3731 | void |
3732 | target_attach (char *args, int from_tty) | |
3733 | { | |
3734 | struct target_ops *t; | |
5d502164 | 3735 | |
136d6dae VP |
3736 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3737 | { | |
3738 | if (t->to_attach != NULL) | |
3739 | { | |
3740 | t->to_attach (t, args, from_tty); | |
947b8855 PA |
3741 | if (targetdebug) |
3742 | fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n", | |
3743 | args, from_tty); | |
136d6dae VP |
3744 | return; |
3745 | } | |
3746 | } | |
3747 | ||
3748 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 3749 | _("could not find a target to attach")); |
136d6dae VP |
3750 | } |
3751 | ||
28439f5e PA |
3752 | int |
3753 | target_thread_alive (ptid_t ptid) | |
c906108c | 3754 | { |
28439f5e | 3755 | struct target_ops *t; |
5d502164 | 3756 | |
28439f5e PA |
3757 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3758 | { | |
3759 | if (t->to_thread_alive != NULL) | |
3760 | { | |
3761 | int retval; | |
c906108c | 3762 | |
28439f5e PA |
3763 | retval = t->to_thread_alive (t, ptid); |
3764 | if (targetdebug) | |
3765 | fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n", | |
3766 | PIDGET (ptid), retval); | |
3767 | ||
3768 | return retval; | |
3769 | } | |
3770 | } | |
3771 | ||
3772 | return 0; | |
3773 | } | |
3774 | ||
3775 | void | |
3776 | target_find_new_threads (void) | |
3777 | { | |
3778 | struct target_ops *t; | |
5d502164 | 3779 | |
28439f5e PA |
3780 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3781 | { | |
3782 | if (t->to_find_new_threads != NULL) | |
3783 | { | |
3784 | t->to_find_new_threads (t); | |
3785 | if (targetdebug) | |
3786 | fprintf_unfiltered (gdb_stdlog, "target_find_new_threads ()\n"); | |
3787 | ||
3788 | return; | |
3789 | } | |
3790 | } | |
c906108c SS |
3791 | } |
3792 | ||
d914c394 SS |
3793 | void |
3794 | target_stop (ptid_t ptid) | |
3795 | { | |
3796 | if (!may_stop) | |
3797 | { | |
3798 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3799 | return; | |
3800 | } | |
3801 | ||
3802 | (*current_target.to_stop) (ptid); | |
3803 | } | |
3804 | ||
c906108c | 3805 | static void |
28439f5e | 3806 | debug_to_post_attach (int pid) |
c906108c | 3807 | { |
28439f5e | 3808 | debug_target.to_post_attach (pid); |
c906108c | 3809 | |
28439f5e | 3810 | fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid); |
c906108c SS |
3811 | } |
3812 | ||
f00150c9 DE |
3813 | /* Return a pretty printed form of target_waitstatus. |
3814 | Space for the result is malloc'd, caller must free. */ | |
c906108c | 3815 | |
f00150c9 DE |
3816 | char * |
3817 | target_waitstatus_to_string (const struct target_waitstatus *ws) | |
3818 | { | |
3819 | const char *kind_str = "status->kind = "; | |
c906108c | 3820 | |
f00150c9 | 3821 | switch (ws->kind) |
c906108c SS |
3822 | { |
3823 | case TARGET_WAITKIND_EXITED: | |
f00150c9 DE |
3824 | return xstrprintf ("%sexited, status = %d", |
3825 | kind_str, ws->value.integer); | |
c906108c | 3826 | case TARGET_WAITKIND_STOPPED: |
f00150c9 DE |
3827 | return xstrprintf ("%sstopped, signal = %s", |
3828 | kind_str, target_signal_to_name (ws->value.sig)); | |
c906108c | 3829 | case TARGET_WAITKIND_SIGNALLED: |
f00150c9 DE |
3830 | return xstrprintf ("%ssignalled, signal = %s", |
3831 | kind_str, target_signal_to_name (ws->value.sig)); | |
c906108c | 3832 | case TARGET_WAITKIND_LOADED: |
f00150c9 | 3833 | return xstrprintf ("%sloaded", kind_str); |
c906108c | 3834 | case TARGET_WAITKIND_FORKED: |
f00150c9 | 3835 | return xstrprintf ("%sforked", kind_str); |
c906108c | 3836 | case TARGET_WAITKIND_VFORKED: |
f00150c9 | 3837 | return xstrprintf ("%svforked", kind_str); |
c906108c | 3838 | case TARGET_WAITKIND_EXECD: |
f00150c9 DE |
3839 | return xstrprintf ("%sexecd", kind_str); |
3840 | case TARGET_WAITKIND_SYSCALL_ENTRY: | |
a96d9b2e | 3841 | return xstrprintf ("%sentered syscall", kind_str); |
f00150c9 | 3842 | case TARGET_WAITKIND_SYSCALL_RETURN: |
a96d9b2e | 3843 | return xstrprintf ("%sexited syscall", kind_str); |
c906108c | 3844 | case TARGET_WAITKIND_SPURIOUS: |
f00150c9 DE |
3845 | return xstrprintf ("%sspurious", kind_str); |
3846 | case TARGET_WAITKIND_IGNORE: | |
3847 | return xstrprintf ("%signore", kind_str); | |
3848 | case TARGET_WAITKIND_NO_HISTORY: | |
3849 | return xstrprintf ("%sno-history", kind_str); | |
0c94aa73 PA |
3850 | case TARGET_WAITKIND_NO_RESUMED: |
3851 | return xstrprintf ("%sno-resumed", kind_str); | |
c906108c | 3852 | default: |
f00150c9 | 3853 | return xstrprintf ("%sunknown???", kind_str); |
c906108c | 3854 | } |
f00150c9 DE |
3855 | } |
3856 | ||
bf0c5130 | 3857 | static void |
56be3814 UW |
3858 | debug_print_register (const char * func, |
3859 | struct regcache *regcache, int regno) | |
bf0c5130 | 3860 | { |
f8d29908 | 3861 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
5d502164 | 3862 | |
bf0c5130 | 3863 | fprintf_unfiltered (gdb_stdlog, "%s ", func); |
f8d29908 | 3864 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) |
f8d29908 UW |
3865 | && gdbarch_register_name (gdbarch, regno) != NULL |
3866 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') | |
3867 | fprintf_unfiltered (gdb_stdlog, "(%s)", | |
3868 | gdbarch_register_name (gdbarch, regno)); | |
bf0c5130 AC |
3869 | else |
3870 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
0ff58721 | 3871 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) |
bf0c5130 | 3872 | { |
e17a4113 | 3873 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
f8d29908 | 3874 | int i, size = register_size (gdbarch, regno); |
d9d9c31f | 3875 | unsigned char buf[MAX_REGISTER_SIZE]; |
5d502164 | 3876 | |
0ff58721 | 3877 | regcache_raw_collect (regcache, regno, buf); |
bf0c5130 | 3878 | fprintf_unfiltered (gdb_stdlog, " = "); |
81c4a259 | 3879 | for (i = 0; i < size; i++) |
bf0c5130 AC |
3880 | { |
3881 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
3882 | } | |
81c4a259 | 3883 | if (size <= sizeof (LONGEST)) |
bf0c5130 | 3884 | { |
e17a4113 | 3885 | ULONGEST val = extract_unsigned_integer (buf, size, byte_order); |
5d502164 | 3886 | |
0b1553bc UW |
3887 | fprintf_unfiltered (gdb_stdlog, " %s %s", |
3888 | core_addr_to_string_nz (val), plongest (val)); | |
bf0c5130 AC |
3889 | } |
3890 | } | |
3891 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
3892 | } | |
3893 | ||
28439f5e PA |
3894 | void |
3895 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 3896 | { |
28439f5e | 3897 | struct target_ops *t; |
5d502164 | 3898 | |
28439f5e PA |
3899 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3900 | { | |
3901 | if (t->to_fetch_registers != NULL) | |
3902 | { | |
3903 | t->to_fetch_registers (t, regcache, regno); | |
3904 | if (targetdebug) | |
3905 | debug_print_register ("target_fetch_registers", regcache, regno); | |
3906 | return; | |
3907 | } | |
3908 | } | |
c906108c SS |
3909 | } |
3910 | ||
28439f5e PA |
3911 | void |
3912 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 3913 | { |
28439f5e | 3914 | struct target_ops *t; |
5d502164 | 3915 | |
d914c394 SS |
3916 | if (!may_write_registers) |
3917 | error (_("Writing to registers is not allowed (regno %d)"), regno); | |
3918 | ||
28439f5e PA |
3919 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3920 | { | |
3921 | if (t->to_store_registers != NULL) | |
3922 | { | |
3923 | t->to_store_registers (t, regcache, regno); | |
3924 | if (targetdebug) | |
3925 | { | |
3926 | debug_print_register ("target_store_registers", regcache, regno); | |
3927 | } | |
3928 | return; | |
3929 | } | |
3930 | } | |
3931 | ||
3932 | noprocess (); | |
c906108c SS |
3933 | } |
3934 | ||
dc146f7c VP |
3935 | int |
3936 | target_core_of_thread (ptid_t ptid) | |
3937 | { | |
3938 | struct target_ops *t; | |
3939 | ||
3940 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3941 | { | |
3942 | if (t->to_core_of_thread != NULL) | |
3943 | { | |
3944 | int retval = t->to_core_of_thread (t, ptid); | |
5d502164 | 3945 | |
dc146f7c | 3946 | if (targetdebug) |
3e43a32a MS |
3947 | fprintf_unfiltered (gdb_stdlog, |
3948 | "target_core_of_thread (%d) = %d\n", | |
dc146f7c VP |
3949 | PIDGET (ptid), retval); |
3950 | return retval; | |
3951 | } | |
3952 | } | |
3953 | ||
3954 | return -1; | |
3955 | } | |
3956 | ||
4a5e7a5b PA |
3957 | int |
3958 | target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3959 | { | |
3960 | struct target_ops *t; | |
3961 | ||
3962 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3963 | { | |
3964 | if (t->to_verify_memory != NULL) | |
3965 | { | |
3966 | int retval = t->to_verify_memory (t, data, memaddr, size); | |
5d502164 | 3967 | |
4a5e7a5b | 3968 | if (targetdebug) |
3e43a32a MS |
3969 | fprintf_unfiltered (gdb_stdlog, |
3970 | "target_verify_memory (%s, %s) = %d\n", | |
4a5e7a5b PA |
3971 | paddress (target_gdbarch, memaddr), |
3972 | pulongest (size), | |
3973 | retval); | |
3974 | return retval; | |
3975 | } | |
3976 | } | |
3977 | ||
3978 | tcomplain (); | |
3979 | } | |
3980 | ||
9c06b0b4 TJB |
3981 | /* The documentation for this function is in its prototype declaration in |
3982 | target.h. */ | |
3983 | ||
3984 | int | |
3985 | target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
3986 | { | |
3987 | struct target_ops *t; | |
3988 | ||
3989 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3990 | if (t->to_insert_mask_watchpoint != NULL) | |
3991 | { | |
3992 | int ret; | |
3993 | ||
3994 | ret = t->to_insert_mask_watchpoint (t, addr, mask, rw); | |
3995 | ||
3996 | if (targetdebug) | |
3997 | fprintf_unfiltered (gdb_stdlog, "\ | |
3998 | target_insert_mask_watchpoint (%s, %s, %d) = %d\n", | |
3999 | core_addr_to_string (addr), | |
4000 | core_addr_to_string (mask), rw, ret); | |
4001 | ||
4002 | return ret; | |
4003 | } | |
4004 | ||
4005 | return 1; | |
4006 | } | |
4007 | ||
4008 | /* The documentation for this function is in its prototype declaration in | |
4009 | target.h. */ | |
4010 | ||
4011 | int | |
4012 | target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
4013 | { | |
4014 | struct target_ops *t; | |
4015 | ||
4016 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4017 | if (t->to_remove_mask_watchpoint != NULL) | |
4018 | { | |
4019 | int ret; | |
4020 | ||
4021 | ret = t->to_remove_mask_watchpoint (t, addr, mask, rw); | |
4022 | ||
4023 | if (targetdebug) | |
4024 | fprintf_unfiltered (gdb_stdlog, "\ | |
4025 | target_remove_mask_watchpoint (%s, %s, %d) = %d\n", | |
4026 | core_addr_to_string (addr), | |
4027 | core_addr_to_string (mask), rw, ret); | |
4028 | ||
4029 | return ret; | |
4030 | } | |
4031 | ||
4032 | return 1; | |
4033 | } | |
4034 | ||
4035 | /* The documentation for this function is in its prototype declaration | |
4036 | in target.h. */ | |
4037 | ||
4038 | int | |
4039 | target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask) | |
4040 | { | |
4041 | struct target_ops *t; | |
4042 | ||
4043 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4044 | if (t->to_masked_watch_num_registers != NULL) | |
4045 | return t->to_masked_watch_num_registers (t, addr, mask); | |
4046 | ||
4047 | return -1; | |
4048 | } | |
4049 | ||
f1310107 TJB |
4050 | /* The documentation for this function is in its prototype declaration |
4051 | in target.h. */ | |
4052 | ||
4053 | int | |
4054 | target_ranged_break_num_registers (void) | |
4055 | { | |
4056 | struct target_ops *t; | |
4057 | ||
4058 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4059 | if (t->to_ranged_break_num_registers != NULL) | |
4060 | return t->to_ranged_break_num_registers (t); | |
4061 | ||
4062 | return -1; | |
4063 | } | |
4064 | ||
c906108c | 4065 | static void |
316f2060 | 4066 | debug_to_prepare_to_store (struct regcache *regcache) |
c906108c | 4067 | { |
316f2060 | 4068 | debug_target.to_prepare_to_store (regcache); |
c906108c | 4069 | |
96baa820 | 4070 | fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n"); |
c906108c SS |
4071 | } |
4072 | ||
4073 | static int | |
961cb7b5 | 4074 | deprecated_debug_xfer_memory (CORE_ADDR memaddr, bfd_byte *myaddr, int len, |
c8e73a31 AC |
4075 | int write, struct mem_attrib *attrib, |
4076 | struct target_ops *target) | |
c906108c SS |
4077 | { |
4078 | int retval; | |
4079 | ||
c8e73a31 AC |
4080 | retval = debug_target.deprecated_xfer_memory (memaddr, myaddr, len, write, |
4081 | attrib, target); | |
c906108c | 4082 | |
96baa820 | 4083 | fprintf_unfiltered (gdb_stdlog, |
53b71562 | 4084 | "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d", |
5af949e3 UW |
4085 | paddress (target_gdbarch, memaddr), len, |
4086 | write ? "write" : "read", retval); | |
c906108c | 4087 | |
c906108c SS |
4088 | if (retval > 0) |
4089 | { | |
4090 | int i; | |
4091 | ||
96baa820 | 4092 | fputs_unfiltered (", bytes =", gdb_stdlog); |
c906108c SS |
4093 | for (i = 0; i < retval; i++) |
4094 | { | |
53b71562 | 4095 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
333dabeb DJ |
4096 | { |
4097 | if (targetdebug < 2 && i > 0) | |
4098 | { | |
4099 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
4100 | break; | |
4101 | } | |
4102 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
4103 | } | |
2bc416ba | 4104 | |
96baa820 | 4105 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
c906108c SS |
4106 | } |
4107 | } | |
4108 | ||
96baa820 | 4109 | fputc_unfiltered ('\n', gdb_stdlog); |
c906108c SS |
4110 | |
4111 | return retval; | |
4112 | } | |
4113 | ||
4114 | static void | |
fba45db2 | 4115 | debug_to_files_info (struct target_ops *target) |
c906108c SS |
4116 | { |
4117 | debug_target.to_files_info (target); | |
4118 | ||
96baa820 | 4119 | fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n"); |
c906108c SS |
4120 | } |
4121 | ||
4122 | static int | |
a6d9a66e UW |
4123 | debug_to_insert_breakpoint (struct gdbarch *gdbarch, |
4124 | struct bp_target_info *bp_tgt) | |
c906108c SS |
4125 | { |
4126 | int retval; | |
4127 | ||
a6d9a66e | 4128 | retval = debug_target.to_insert_breakpoint (gdbarch, bp_tgt); |
c906108c | 4129 | |
96baa820 | 4130 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
4131 | "target_insert_breakpoint (%s, xxx) = %ld\n", |
4132 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 4133 | (unsigned long) retval); |
c906108c SS |
4134 | return retval; |
4135 | } | |
4136 | ||
4137 | static int | |
a6d9a66e UW |
4138 | debug_to_remove_breakpoint (struct gdbarch *gdbarch, |
4139 | struct bp_target_info *bp_tgt) | |
c906108c SS |
4140 | { |
4141 | int retval; | |
4142 | ||
a6d9a66e | 4143 | retval = debug_target.to_remove_breakpoint (gdbarch, bp_tgt); |
c906108c | 4144 | |
96baa820 | 4145 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
4146 | "target_remove_breakpoint (%s, xxx) = %ld\n", |
4147 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 4148 | (unsigned long) retval); |
c906108c SS |
4149 | return retval; |
4150 | } | |
4151 | ||
ccaa32c7 GS |
4152 | static int |
4153 | debug_to_can_use_hw_breakpoint (int type, int cnt, int from_tty) | |
4154 | { | |
4155 | int retval; | |
4156 | ||
4157 | retval = debug_target.to_can_use_hw_breakpoint (type, cnt, from_tty); | |
4158 | ||
4159 | fprintf_unfiltered (gdb_stdlog, | |
4160 | "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n", | |
4161 | (unsigned long) type, | |
4162 | (unsigned long) cnt, | |
4163 | (unsigned long) from_tty, | |
4164 | (unsigned long) retval); | |
4165 | return retval; | |
4166 | } | |
4167 | ||
e0d24f8d WZ |
4168 | static int |
4169 | debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
4170 | { | |
4171 | CORE_ADDR retval; | |
4172 | ||
4173 | retval = debug_target.to_region_ok_for_hw_watchpoint (addr, len); | |
4174 | ||
4175 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4176 | "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n", |
4177 | core_addr_to_string (addr), (unsigned long) len, | |
4178 | core_addr_to_string (retval)); | |
e0d24f8d WZ |
4179 | return retval; |
4180 | } | |
4181 | ||
0cf6dd15 TJB |
4182 | static int |
4183 | debug_to_can_accel_watchpoint_condition (CORE_ADDR addr, int len, int rw, | |
4184 | struct expression *cond) | |
4185 | { | |
4186 | int retval; | |
4187 | ||
3e43a32a MS |
4188 | retval = debug_target.to_can_accel_watchpoint_condition (addr, len, |
4189 | rw, cond); | |
0cf6dd15 TJB |
4190 | |
4191 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
4192 | "target_can_accel_watchpoint_condition " |
4193 | "(%s, %d, %d, %s) = %ld\n", | |
bd91e7ae OS |
4194 | core_addr_to_string (addr), len, rw, |
4195 | host_address_to_string (cond), (unsigned long) retval); | |
0cf6dd15 TJB |
4196 | return retval; |
4197 | } | |
4198 | ||
ccaa32c7 GS |
4199 | static int |
4200 | debug_to_stopped_by_watchpoint (void) | |
4201 | { | |
4202 | int retval; | |
4203 | ||
4204 | retval = debug_target.to_stopped_by_watchpoint (); | |
4205 | ||
4206 | fprintf_unfiltered (gdb_stdlog, | |
d92524f1 | 4207 | "target_stopped_by_watchpoint () = %ld\n", |
ccaa32c7 GS |
4208 | (unsigned long) retval); |
4209 | return retval; | |
4210 | } | |
4211 | ||
4aa7a7f5 JJ |
4212 | static int |
4213 | debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr) | |
ccaa32c7 | 4214 | { |
4aa7a7f5 | 4215 | int retval; |
ccaa32c7 | 4216 | |
4aa7a7f5 | 4217 | retval = debug_target.to_stopped_data_address (target, addr); |
ccaa32c7 GS |
4218 | |
4219 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4220 | "target_stopped_data_address ([%s]) = %ld\n", |
4221 | core_addr_to_string (*addr), | |
4aa7a7f5 | 4222 | (unsigned long)retval); |
ccaa32c7 GS |
4223 | return retval; |
4224 | } | |
4225 | ||
5009afc5 AS |
4226 | static int |
4227 | debug_to_watchpoint_addr_within_range (struct target_ops *target, | |
4228 | CORE_ADDR addr, | |
4229 | CORE_ADDR start, int length) | |
4230 | { | |
4231 | int retval; | |
4232 | ||
4233 | retval = debug_target.to_watchpoint_addr_within_range (target, addr, | |
4234 | start, length); | |
4235 | ||
4236 | fprintf_filtered (gdb_stdlog, | |
bd91e7ae OS |
4237 | "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n", |
4238 | core_addr_to_string (addr), core_addr_to_string (start), | |
4239 | length, retval); | |
5009afc5 AS |
4240 | return retval; |
4241 | } | |
4242 | ||
ccaa32c7 | 4243 | static int |
a6d9a66e UW |
4244 | debug_to_insert_hw_breakpoint (struct gdbarch *gdbarch, |
4245 | struct bp_target_info *bp_tgt) | |
ccaa32c7 GS |
4246 | { |
4247 | int retval; | |
4248 | ||
a6d9a66e | 4249 | retval = debug_target.to_insert_hw_breakpoint (gdbarch, bp_tgt); |
ccaa32c7 GS |
4250 | |
4251 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4252 | "target_insert_hw_breakpoint (%s, xxx) = %ld\n", |
4253 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
4254 | (unsigned long) retval); |
4255 | return retval; | |
4256 | } | |
4257 | ||
4258 | static int | |
a6d9a66e UW |
4259 | debug_to_remove_hw_breakpoint (struct gdbarch *gdbarch, |
4260 | struct bp_target_info *bp_tgt) | |
ccaa32c7 GS |
4261 | { |
4262 | int retval; | |
4263 | ||
a6d9a66e | 4264 | retval = debug_target.to_remove_hw_breakpoint (gdbarch, bp_tgt); |
ccaa32c7 GS |
4265 | |
4266 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4267 | "target_remove_hw_breakpoint (%s, xxx) = %ld\n", |
4268 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
4269 | (unsigned long) retval); |
4270 | return retval; | |
4271 | } | |
4272 | ||
4273 | static int | |
0cf6dd15 TJB |
4274 | debug_to_insert_watchpoint (CORE_ADDR addr, int len, int type, |
4275 | struct expression *cond) | |
ccaa32c7 GS |
4276 | { |
4277 | int retval; | |
4278 | ||
0cf6dd15 | 4279 | retval = debug_target.to_insert_watchpoint (addr, len, type, cond); |
ccaa32c7 GS |
4280 | |
4281 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4282 | "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n", |
4283 | core_addr_to_string (addr), len, type, | |
4284 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
4285 | return retval; |
4286 | } | |
4287 | ||
4288 | static int | |
0cf6dd15 TJB |
4289 | debug_to_remove_watchpoint (CORE_ADDR addr, int len, int type, |
4290 | struct expression *cond) | |
ccaa32c7 GS |
4291 | { |
4292 | int retval; | |
4293 | ||
0cf6dd15 | 4294 | retval = debug_target.to_remove_watchpoint (addr, len, type, cond); |
ccaa32c7 GS |
4295 | |
4296 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4297 | "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n", |
4298 | core_addr_to_string (addr), len, type, | |
4299 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
4300 | return retval; |
4301 | } | |
4302 | ||
c906108c | 4303 | static void |
fba45db2 | 4304 | debug_to_terminal_init (void) |
c906108c SS |
4305 | { |
4306 | debug_target.to_terminal_init (); | |
4307 | ||
96baa820 | 4308 | fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n"); |
c906108c SS |
4309 | } |
4310 | ||
4311 | static void | |
fba45db2 | 4312 | debug_to_terminal_inferior (void) |
c906108c SS |
4313 | { |
4314 | debug_target.to_terminal_inferior (); | |
4315 | ||
96baa820 | 4316 | fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n"); |
c906108c SS |
4317 | } |
4318 | ||
4319 | static void | |
fba45db2 | 4320 | debug_to_terminal_ours_for_output (void) |
c906108c SS |
4321 | { |
4322 | debug_target.to_terminal_ours_for_output (); | |
4323 | ||
96baa820 | 4324 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n"); |
c906108c SS |
4325 | } |
4326 | ||
4327 | static void | |
fba45db2 | 4328 | debug_to_terminal_ours (void) |
c906108c SS |
4329 | { |
4330 | debug_target.to_terminal_ours (); | |
4331 | ||
96baa820 | 4332 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n"); |
c906108c SS |
4333 | } |
4334 | ||
a790ad35 SC |
4335 | static void |
4336 | debug_to_terminal_save_ours (void) | |
4337 | { | |
4338 | debug_target.to_terminal_save_ours (); | |
4339 | ||
4340 | fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n"); | |
4341 | } | |
4342 | ||
c906108c | 4343 | static void |
fba45db2 | 4344 | debug_to_terminal_info (char *arg, int from_tty) |
c906108c SS |
4345 | { |
4346 | debug_target.to_terminal_info (arg, from_tty); | |
4347 | ||
96baa820 | 4348 | fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg, |
c906108c SS |
4349 | from_tty); |
4350 | } | |
4351 | ||
c906108c | 4352 | static void |
fba45db2 | 4353 | debug_to_load (char *args, int from_tty) |
c906108c SS |
4354 | { |
4355 | debug_target.to_load (args, from_tty); | |
4356 | ||
96baa820 | 4357 | fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty); |
c906108c SS |
4358 | } |
4359 | ||
c906108c | 4360 | static void |
39f77062 | 4361 | debug_to_post_startup_inferior (ptid_t ptid) |
c906108c | 4362 | { |
39f77062 | 4363 | debug_target.to_post_startup_inferior (ptid); |
c906108c | 4364 | |
96baa820 | 4365 | fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n", |
39f77062 | 4366 | PIDGET (ptid)); |
c906108c SS |
4367 | } |
4368 | ||
77b06cd7 | 4369 | static int |
fba45db2 | 4370 | debug_to_insert_fork_catchpoint (int pid) |
c906108c | 4371 | { |
77b06cd7 TJB |
4372 | int retval; |
4373 | ||
4374 | retval = debug_target.to_insert_fork_catchpoint (pid); | |
4375 | ||
4376 | fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d) = %d\n", | |
4377 | pid, retval); | |
c906108c | 4378 | |
77b06cd7 | 4379 | return retval; |
c906108c SS |
4380 | } |
4381 | ||
4382 | static int | |
fba45db2 | 4383 | debug_to_remove_fork_catchpoint (int pid) |
c906108c | 4384 | { |
c5aa993b | 4385 | int retval; |
c906108c SS |
4386 | |
4387 | retval = debug_target.to_remove_fork_catchpoint (pid); | |
4388 | ||
96baa820 | 4389 | fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n", |
c5aa993b | 4390 | pid, retval); |
c906108c SS |
4391 | |
4392 | return retval; | |
4393 | } | |
4394 | ||
77b06cd7 | 4395 | static int |
fba45db2 | 4396 | debug_to_insert_vfork_catchpoint (int pid) |
c906108c | 4397 | { |
77b06cd7 TJB |
4398 | int retval; |
4399 | ||
4400 | retval = debug_target.to_insert_vfork_catchpoint (pid); | |
c906108c | 4401 | |
77b06cd7 TJB |
4402 | fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d) = %d\n", |
4403 | pid, retval); | |
4404 | ||
4405 | return retval; | |
c906108c SS |
4406 | } |
4407 | ||
4408 | static int | |
fba45db2 | 4409 | debug_to_remove_vfork_catchpoint (int pid) |
c906108c | 4410 | { |
c5aa993b | 4411 | int retval; |
c906108c SS |
4412 | |
4413 | retval = debug_target.to_remove_vfork_catchpoint (pid); | |
4414 | ||
96baa820 | 4415 | fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n", |
c5aa993b | 4416 | pid, retval); |
c906108c SS |
4417 | |
4418 | return retval; | |
4419 | } | |
4420 | ||
77b06cd7 | 4421 | static int |
fba45db2 | 4422 | debug_to_insert_exec_catchpoint (int pid) |
c906108c | 4423 | { |
77b06cd7 TJB |
4424 | int retval; |
4425 | ||
4426 | retval = debug_target.to_insert_exec_catchpoint (pid); | |
c906108c | 4427 | |
77b06cd7 TJB |
4428 | fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d) = %d\n", |
4429 | pid, retval); | |
4430 | ||
4431 | return retval; | |
c906108c SS |
4432 | } |
4433 | ||
4434 | static int | |
fba45db2 | 4435 | debug_to_remove_exec_catchpoint (int pid) |
c906108c | 4436 | { |
c5aa993b | 4437 | int retval; |
c906108c SS |
4438 | |
4439 | retval = debug_target.to_remove_exec_catchpoint (pid); | |
4440 | ||
96baa820 | 4441 | fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n", |
c5aa993b | 4442 | pid, retval); |
c906108c SS |
4443 | |
4444 | return retval; | |
4445 | } | |
4446 | ||
c906108c | 4447 | static int |
fba45db2 | 4448 | debug_to_has_exited (int pid, int wait_status, int *exit_status) |
c906108c | 4449 | { |
c5aa993b | 4450 | int has_exited; |
c906108c SS |
4451 | |
4452 | has_exited = debug_target.to_has_exited (pid, wait_status, exit_status); | |
4453 | ||
96baa820 | 4454 | fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n", |
c5aa993b | 4455 | pid, wait_status, *exit_status, has_exited); |
c906108c SS |
4456 | |
4457 | return has_exited; | |
4458 | } | |
4459 | ||
c906108c | 4460 | static int |
fba45db2 | 4461 | debug_to_can_run (void) |
c906108c SS |
4462 | { |
4463 | int retval; | |
4464 | ||
4465 | retval = debug_target.to_can_run (); | |
4466 | ||
96baa820 | 4467 | fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval); |
c906108c SS |
4468 | |
4469 | return retval; | |
4470 | } | |
4471 | ||
c2250ad1 UW |
4472 | static struct gdbarch * |
4473 | debug_to_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
4474 | { | |
4475 | struct gdbarch *retval; | |
4476 | ||
4477 | retval = debug_target.to_thread_architecture (ops, ptid); | |
4478 | ||
3e43a32a MS |
4479 | fprintf_unfiltered (gdb_stdlog, |
4480 | "target_thread_architecture (%s) = %s [%s]\n", | |
4481 | target_pid_to_str (ptid), | |
4482 | host_address_to_string (retval), | |
c2250ad1 UW |
4483 | gdbarch_bfd_arch_info (retval)->printable_name); |
4484 | return retval; | |
4485 | } | |
4486 | ||
c906108c | 4487 | static void |
94cc34af | 4488 | debug_to_stop (ptid_t ptid) |
c906108c | 4489 | { |
94cc34af | 4490 | debug_target.to_stop (ptid); |
c906108c | 4491 | |
94cc34af PA |
4492 | fprintf_unfiltered (gdb_stdlog, "target_stop (%s)\n", |
4493 | target_pid_to_str (ptid)); | |
c906108c SS |
4494 | } |
4495 | ||
96baa820 JM |
4496 | static void |
4497 | debug_to_rcmd (char *command, | |
d9fcf2fb | 4498 | struct ui_file *outbuf) |
96baa820 JM |
4499 | { |
4500 | debug_target.to_rcmd (command, outbuf); | |
4501 | fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command); | |
4502 | } | |
4503 | ||
c906108c | 4504 | static char * |
fba45db2 | 4505 | debug_to_pid_to_exec_file (int pid) |
c906108c | 4506 | { |
c5aa993b | 4507 | char *exec_file; |
c906108c SS |
4508 | |
4509 | exec_file = debug_target.to_pid_to_exec_file (pid); | |
4510 | ||
96baa820 | 4511 | fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n", |
c5aa993b | 4512 | pid, exec_file); |
c906108c SS |
4513 | |
4514 | return exec_file; | |
4515 | } | |
4516 | ||
c906108c | 4517 | static void |
fba45db2 | 4518 | setup_target_debug (void) |
c906108c SS |
4519 | { |
4520 | memcpy (&debug_target, ¤t_target, sizeof debug_target); | |
4521 | ||
4522 | current_target.to_open = debug_to_open; | |
c906108c | 4523 | current_target.to_post_attach = debug_to_post_attach; |
c906108c | 4524 | current_target.to_prepare_to_store = debug_to_prepare_to_store; |
c8e73a31 | 4525 | current_target.deprecated_xfer_memory = deprecated_debug_xfer_memory; |
c906108c SS |
4526 | current_target.to_files_info = debug_to_files_info; |
4527 | current_target.to_insert_breakpoint = debug_to_insert_breakpoint; | |
4528 | current_target.to_remove_breakpoint = debug_to_remove_breakpoint; | |
ccaa32c7 GS |
4529 | current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint; |
4530 | current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint; | |
4531 | current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint; | |
4532 | current_target.to_insert_watchpoint = debug_to_insert_watchpoint; | |
4533 | current_target.to_remove_watchpoint = debug_to_remove_watchpoint; | |
4534 | current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint; | |
4535 | current_target.to_stopped_data_address = debug_to_stopped_data_address; | |
3e43a32a MS |
4536 | current_target.to_watchpoint_addr_within_range |
4537 | = debug_to_watchpoint_addr_within_range; | |
4538 | current_target.to_region_ok_for_hw_watchpoint | |
4539 | = debug_to_region_ok_for_hw_watchpoint; | |
4540 | current_target.to_can_accel_watchpoint_condition | |
4541 | = debug_to_can_accel_watchpoint_condition; | |
c906108c SS |
4542 | current_target.to_terminal_init = debug_to_terminal_init; |
4543 | current_target.to_terminal_inferior = debug_to_terminal_inferior; | |
3e43a32a MS |
4544 | current_target.to_terminal_ours_for_output |
4545 | = debug_to_terminal_ours_for_output; | |
c906108c | 4546 | current_target.to_terminal_ours = debug_to_terminal_ours; |
a790ad35 | 4547 | current_target.to_terminal_save_ours = debug_to_terminal_save_ours; |
c906108c | 4548 | current_target.to_terminal_info = debug_to_terminal_info; |
c906108c | 4549 | current_target.to_load = debug_to_load; |
c906108c | 4550 | current_target.to_post_startup_inferior = debug_to_post_startup_inferior; |
c906108c SS |
4551 | current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint; |
4552 | current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint; | |
4553 | current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint; | |
4554 | current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint; | |
c906108c SS |
4555 | current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint; |
4556 | current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint; | |
c906108c | 4557 | current_target.to_has_exited = debug_to_has_exited; |
c906108c | 4558 | current_target.to_can_run = debug_to_can_run; |
c906108c | 4559 | current_target.to_stop = debug_to_stop; |
96baa820 | 4560 | current_target.to_rcmd = debug_to_rcmd; |
c906108c | 4561 | current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file; |
c2250ad1 | 4562 | current_target.to_thread_architecture = debug_to_thread_architecture; |
c906108c | 4563 | } |
c906108c | 4564 | \f |
c5aa993b JM |
4565 | |
4566 | static char targ_desc[] = | |
3e43a32a MS |
4567 | "Names of targets and files being debugged.\nShows the entire \ |
4568 | stack of targets currently in use (including the exec-file,\n\ | |
c906108c SS |
4569 | core-file, and process, if any), as well as the symbol file name."; |
4570 | ||
96baa820 JM |
4571 | static void |
4572 | do_monitor_command (char *cmd, | |
4573 | int from_tty) | |
4574 | { | |
2b5fe715 AC |
4575 | if ((current_target.to_rcmd |
4576 | == (void (*) (char *, struct ui_file *)) tcomplain) | |
96baa820 | 4577 | || (current_target.to_rcmd == debug_to_rcmd |
2b5fe715 AC |
4578 | && (debug_target.to_rcmd |
4579 | == (void (*) (char *, struct ui_file *)) tcomplain))) | |
8a3fe4f8 | 4580 | error (_("\"monitor\" command not supported by this target.")); |
96baa820 JM |
4581 | target_rcmd (cmd, gdb_stdtarg); |
4582 | } | |
4583 | ||
87680a14 JB |
4584 | /* Print the name of each layers of our target stack. */ |
4585 | ||
4586 | static void | |
4587 | maintenance_print_target_stack (char *cmd, int from_tty) | |
4588 | { | |
4589 | struct target_ops *t; | |
4590 | ||
4591 | printf_filtered (_("The current target stack is:\n")); | |
4592 | ||
4593 | for (t = target_stack; t != NULL; t = t->beneath) | |
4594 | { | |
4595 | printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname); | |
4596 | } | |
4597 | } | |
4598 | ||
c6ebd6cf VP |
4599 | /* Controls if async mode is permitted. */ |
4600 | int target_async_permitted = 0; | |
4601 | ||
4602 | /* The set command writes to this variable. If the inferior is | |
4603 | executing, linux_nat_async_permitted is *not* updated. */ | |
4604 | static int target_async_permitted_1 = 0; | |
4605 | ||
4606 | static void | |
4607 | set_maintenance_target_async_permitted (char *args, int from_tty, | |
4608 | struct cmd_list_element *c) | |
4609 | { | |
c35b1492 | 4610 | if (have_live_inferiors ()) |
c6ebd6cf VP |
4611 | { |
4612 | target_async_permitted_1 = target_async_permitted; | |
4613 | error (_("Cannot change this setting while the inferior is running.")); | |
4614 | } | |
4615 | ||
4616 | target_async_permitted = target_async_permitted_1; | |
4617 | } | |
4618 | ||
4619 | static void | |
4620 | show_maintenance_target_async_permitted (struct ui_file *file, int from_tty, | |
4621 | struct cmd_list_element *c, | |
4622 | const char *value) | |
4623 | { | |
3e43a32a MS |
4624 | fprintf_filtered (file, |
4625 | _("Controlling the inferior in " | |
4626 | "asynchronous mode is %s.\n"), value); | |
c6ebd6cf VP |
4627 | } |
4628 | ||
d914c394 SS |
4629 | /* Temporary copies of permission settings. */ |
4630 | ||
4631 | static int may_write_registers_1 = 1; | |
4632 | static int may_write_memory_1 = 1; | |
4633 | static int may_insert_breakpoints_1 = 1; | |
4634 | static int may_insert_tracepoints_1 = 1; | |
4635 | static int may_insert_fast_tracepoints_1 = 1; | |
4636 | static int may_stop_1 = 1; | |
4637 | ||
4638 | /* Make the user-set values match the real values again. */ | |
4639 | ||
4640 | void | |
4641 | update_target_permissions (void) | |
4642 | { | |
4643 | may_write_registers_1 = may_write_registers; | |
4644 | may_write_memory_1 = may_write_memory; | |
4645 | may_insert_breakpoints_1 = may_insert_breakpoints; | |
4646 | may_insert_tracepoints_1 = may_insert_tracepoints; | |
4647 | may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints; | |
4648 | may_stop_1 = may_stop; | |
4649 | } | |
4650 | ||
4651 | /* The one function handles (most of) the permission flags in the same | |
4652 | way. */ | |
4653 | ||
4654 | static void | |
4655 | set_target_permissions (char *args, int from_tty, | |
4656 | struct cmd_list_element *c) | |
4657 | { | |
4658 | if (target_has_execution) | |
4659 | { | |
4660 | update_target_permissions (); | |
4661 | error (_("Cannot change this setting while the inferior is running.")); | |
4662 | } | |
4663 | ||
4664 | /* Make the real values match the user-changed values. */ | |
4665 | may_write_registers = may_write_registers_1; | |
4666 | may_insert_breakpoints = may_insert_breakpoints_1; | |
4667 | may_insert_tracepoints = may_insert_tracepoints_1; | |
4668 | may_insert_fast_tracepoints = may_insert_fast_tracepoints_1; | |
4669 | may_stop = may_stop_1; | |
4670 | update_observer_mode (); | |
4671 | } | |
4672 | ||
4673 | /* Set memory write permission independently of observer mode. */ | |
4674 | ||
4675 | static void | |
4676 | set_write_memory_permission (char *args, int from_tty, | |
4677 | struct cmd_list_element *c) | |
4678 | { | |
4679 | /* Make the real values match the user-changed values. */ | |
4680 | may_write_memory = may_write_memory_1; | |
4681 | update_observer_mode (); | |
4682 | } | |
4683 | ||
4684 | ||
c906108c | 4685 | void |
fba45db2 | 4686 | initialize_targets (void) |
c906108c SS |
4687 | { |
4688 | init_dummy_target (); | |
4689 | push_target (&dummy_target); | |
4690 | ||
4691 | add_info ("target", target_info, targ_desc); | |
4692 | add_info ("files", target_info, targ_desc); | |
4693 | ||
85c07804 AC |
4694 | add_setshow_zinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
4695 | Set target debugging."), _("\ | |
4696 | Show target debugging."), _("\ | |
333dabeb DJ |
4697 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
4698 | verbose. Changes do not take effect until the next \"run\" or \"target\"\n\ | |
85c07804 AC |
4699 | command."), |
4700 | NULL, | |
920d2a44 | 4701 | show_targetdebug, |
85c07804 | 4702 | &setdebuglist, &showdebuglist); |
3a11626d | 4703 | |
2bc416ba | 4704 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
4705 | &trust_readonly, _("\ |
4706 | Set mode for reading from readonly sections."), _("\ | |
4707 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
4708 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
4709 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 4710 | result in significant performance improvement for remote targets."), |
2c5b56ce | 4711 | NULL, |
920d2a44 | 4712 | show_trust_readonly, |
e707bbc2 | 4713 | &setlist, &showlist); |
96baa820 JM |
4714 | |
4715 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 4716 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 4717 | |
87680a14 JB |
4718 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
4719 | _("Print the name of each layer of the internal target stack."), | |
4720 | &maintenanceprintlist); | |
4721 | ||
c6ebd6cf VP |
4722 | add_setshow_boolean_cmd ("target-async", no_class, |
4723 | &target_async_permitted_1, _("\ | |
4724 | Set whether gdb controls the inferior in asynchronous mode."), _("\ | |
4725 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
4726 | Tells gdb whether to control the inferior in asynchronous mode."), | |
4727 | set_maintenance_target_async_permitted, | |
4728 | show_maintenance_target_async_permitted, | |
4729 | &setlist, | |
4730 | &showlist); | |
4731 | ||
4e5d721f | 4732 | add_setshow_boolean_cmd ("stack-cache", class_support, |
9cf1b572 | 4733 | &stack_cache_enabled_p_1, _("\ |
4e5d721f DE |
4734 | Set cache use for stack access."), _("\ |
4735 | Show cache use for stack access."), _("\ | |
4736 | When on, use the data cache for all stack access, regardless of any\n\ | |
4737 | configured memory regions. This improves remote performance significantly.\n\ | |
4738 | By default, caching for stack access is on."), | |
4739 | set_stack_cache_enabled_p, | |
4740 | show_stack_cache_enabled_p, | |
4741 | &setlist, &showlist); | |
4742 | ||
d914c394 SS |
4743 | add_setshow_boolean_cmd ("may-write-registers", class_support, |
4744 | &may_write_registers_1, _("\ | |
4745 | Set permission to write into registers."), _("\ | |
4746 | Show permission to write into registers."), _("\ | |
4747 | When this permission is on, GDB may write into the target's registers.\n\ | |
4748 | Otherwise, any sort of write attempt will result in an error."), | |
4749 | set_target_permissions, NULL, | |
4750 | &setlist, &showlist); | |
4751 | ||
4752 | add_setshow_boolean_cmd ("may-write-memory", class_support, | |
4753 | &may_write_memory_1, _("\ | |
4754 | Set permission to write into target memory."), _("\ | |
4755 | Show permission to write into target memory."), _("\ | |
4756 | When this permission is on, GDB may write into the target's memory.\n\ | |
4757 | Otherwise, any sort of write attempt will result in an error."), | |
4758 | set_write_memory_permission, NULL, | |
4759 | &setlist, &showlist); | |
4760 | ||
4761 | add_setshow_boolean_cmd ("may-insert-breakpoints", class_support, | |
4762 | &may_insert_breakpoints_1, _("\ | |
4763 | Set permission to insert breakpoints in the target."), _("\ | |
4764 | Show permission to insert breakpoints in the target."), _("\ | |
4765 | When this permission is on, GDB may insert breakpoints in the program.\n\ | |
4766 | Otherwise, any sort of insertion attempt will result in an error."), | |
4767 | set_target_permissions, NULL, | |
4768 | &setlist, &showlist); | |
4769 | ||
4770 | add_setshow_boolean_cmd ("may-insert-tracepoints", class_support, | |
4771 | &may_insert_tracepoints_1, _("\ | |
4772 | Set permission to insert tracepoints in the target."), _("\ | |
4773 | Show permission to insert tracepoints in the target."), _("\ | |
4774 | When this permission is on, GDB may insert tracepoints in the program.\n\ | |
4775 | Otherwise, any sort of insertion attempt will result in an error."), | |
4776 | set_target_permissions, NULL, | |
4777 | &setlist, &showlist); | |
4778 | ||
4779 | add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support, | |
4780 | &may_insert_fast_tracepoints_1, _("\ | |
4781 | Set permission to insert fast tracepoints in the target."), _("\ | |
4782 | Show permission to insert fast tracepoints in the target."), _("\ | |
4783 | When this permission is on, GDB may insert fast tracepoints.\n\ | |
4784 | Otherwise, any sort of insertion attempt will result in an error."), | |
4785 | set_target_permissions, NULL, | |
4786 | &setlist, &showlist); | |
4787 | ||
4788 | add_setshow_boolean_cmd ("may-interrupt", class_support, | |
4789 | &may_stop_1, _("\ | |
4790 | Set permission to interrupt or signal the target."), _("\ | |
4791 | Show permission to interrupt or signal the target."), _("\ | |
4792 | When this permission is on, GDB may interrupt/stop the target's execution.\n\ | |
4793 | Otherwise, any attempt to interrupt or stop will be ignored."), | |
4794 | set_target_permissions, NULL, | |
4795 | &setlist, &showlist); | |
4796 | ||
4797 | ||
8add0441 | 4798 | target_dcache = dcache_init (); |
c906108c | 4799 | } |