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" |
c906108c | 45 | |
a14ed312 | 46 | static void target_info (char *, int); |
c906108c | 47 | |
a14ed312 | 48 | static void default_terminal_info (char *, int); |
c906108c | 49 | |
5009afc5 AS |
50 | static int default_watchpoint_addr_within_range (struct target_ops *, |
51 | CORE_ADDR, CORE_ADDR, int); | |
52 | ||
e0d24f8d WZ |
53 | static int default_region_ok_for_hw_watchpoint (CORE_ADDR, int); |
54 | ||
c25c4a8b | 55 | static void tcomplain (void) ATTRIBUTE_NORETURN; |
c906108c | 56 | |
a14ed312 | 57 | static int nomemory (CORE_ADDR, char *, int, int, struct target_ops *); |
c906108c | 58 | |
a14ed312 | 59 | static int return_zero (void); |
c906108c | 60 | |
a14ed312 | 61 | static int return_one (void); |
c906108c | 62 | |
ccaa32c7 GS |
63 | static int return_minus_one (void); |
64 | ||
a14ed312 | 65 | void target_ignore (void); |
c906108c | 66 | |
a14ed312 | 67 | static void target_command (char *, int); |
c906108c | 68 | |
a14ed312 | 69 | static struct target_ops *find_default_run_target (char *); |
c906108c | 70 | |
4b8a223f | 71 | static LONGEST default_xfer_partial (struct target_ops *ops, |
0088c768 | 72 | enum target_object object, |
1b0ba102 AC |
73 | const char *annex, gdb_byte *readbuf, |
74 | const gdb_byte *writebuf, | |
8aa91c1e | 75 | ULONGEST offset, LONGEST len); |
0088c768 | 76 | |
cf7a04e8 DJ |
77 | static LONGEST current_xfer_partial (struct target_ops *ops, |
78 | enum target_object object, | |
79 | const char *annex, gdb_byte *readbuf, | |
80 | const gdb_byte *writebuf, | |
81 | ULONGEST offset, LONGEST len); | |
c906108c | 82 | |
cf7a04e8 DJ |
83 | static LONGEST target_xfer_partial (struct target_ops *ops, |
84 | enum target_object object, | |
85 | const char *annex, | |
86 | void *readbuf, const void *writebuf, | |
87 | ULONGEST offset, LONGEST len); | |
c906108c | 88 | |
c2250ad1 UW |
89 | static struct gdbarch *default_thread_architecture (struct target_ops *ops, |
90 | ptid_t ptid); | |
91 | ||
a14ed312 | 92 | static void init_dummy_target (void); |
c906108c | 93 | |
aa869812 AC |
94 | static struct target_ops debug_target; |
95 | ||
a14ed312 | 96 | static void debug_to_open (char *, int); |
c906108c | 97 | |
316f2060 | 98 | static void debug_to_prepare_to_store (struct regcache *); |
c906108c | 99 | |
a14ed312 | 100 | static void debug_to_files_info (struct target_ops *); |
c906108c | 101 | |
a6d9a66e UW |
102 | static int debug_to_insert_breakpoint (struct gdbarch *, |
103 | struct bp_target_info *); | |
c906108c | 104 | |
a6d9a66e UW |
105 | static int debug_to_remove_breakpoint (struct gdbarch *, |
106 | struct bp_target_info *); | |
c906108c | 107 | |
ccaa32c7 GS |
108 | static int debug_to_can_use_hw_breakpoint (int, int, int); |
109 | ||
a6d9a66e UW |
110 | static int debug_to_insert_hw_breakpoint (struct gdbarch *, |
111 | struct bp_target_info *); | |
ccaa32c7 | 112 | |
a6d9a66e UW |
113 | static int debug_to_remove_hw_breakpoint (struct gdbarch *, |
114 | struct bp_target_info *); | |
ccaa32c7 | 115 | |
0cf6dd15 TJB |
116 | static int debug_to_insert_watchpoint (CORE_ADDR, int, int, |
117 | struct expression *); | |
ccaa32c7 | 118 | |
0cf6dd15 TJB |
119 | static int debug_to_remove_watchpoint (CORE_ADDR, int, int, |
120 | struct expression *); | |
ccaa32c7 GS |
121 | |
122 | static int debug_to_stopped_by_watchpoint (void); | |
123 | ||
4aa7a7f5 | 124 | static int debug_to_stopped_data_address (struct target_ops *, CORE_ADDR *); |
ccaa32c7 | 125 | |
5009afc5 AS |
126 | static int debug_to_watchpoint_addr_within_range (struct target_ops *, |
127 | CORE_ADDR, CORE_ADDR, int); | |
128 | ||
e0d24f8d WZ |
129 | static int debug_to_region_ok_for_hw_watchpoint (CORE_ADDR, int); |
130 | ||
0cf6dd15 TJB |
131 | static int debug_to_can_accel_watchpoint_condition (CORE_ADDR, int, int, |
132 | struct expression *); | |
133 | ||
a14ed312 | 134 | static void debug_to_terminal_init (void); |
c906108c | 135 | |
a14ed312 | 136 | static void debug_to_terminal_inferior (void); |
c906108c | 137 | |
a14ed312 | 138 | static void debug_to_terminal_ours_for_output (void); |
c906108c | 139 | |
a790ad35 SC |
140 | static void debug_to_terminal_save_ours (void); |
141 | ||
a14ed312 | 142 | static void debug_to_terminal_ours (void); |
c906108c | 143 | |
a14ed312 | 144 | static void debug_to_terminal_info (char *, int); |
c906108c | 145 | |
a14ed312 | 146 | static void debug_to_load (char *, int); |
c906108c | 147 | |
a14ed312 | 148 | static int debug_to_can_run (void); |
c906108c | 149 | |
94cc34af | 150 | static void debug_to_stop (ptid_t); |
c906108c | 151 | |
c906108c | 152 | /* Pointer to array of target architecture structures; the size of the |
2bc416ba | 153 | array; the current index into the array; the allocated size of the |
c906108c SS |
154 | array. */ |
155 | struct target_ops **target_structs; | |
156 | unsigned target_struct_size; | |
157 | unsigned target_struct_index; | |
158 | unsigned target_struct_allocsize; | |
159 | #define DEFAULT_ALLOCSIZE 10 | |
160 | ||
161 | /* The initial current target, so that there is always a semi-valid | |
162 | current target. */ | |
163 | ||
164 | static struct target_ops dummy_target; | |
165 | ||
166 | /* Top of target stack. */ | |
167 | ||
258b763a | 168 | static struct target_ops *target_stack; |
c906108c SS |
169 | |
170 | /* The target structure we are currently using to talk to a process | |
171 | or file or whatever "inferior" we have. */ | |
172 | ||
173 | struct target_ops current_target; | |
174 | ||
175 | /* Command list for target. */ | |
176 | ||
177 | static struct cmd_list_element *targetlist = NULL; | |
178 | ||
cf7a04e8 DJ |
179 | /* Nonzero if we should trust readonly sections from the |
180 | executable when reading memory. */ | |
181 | ||
182 | static int trust_readonly = 0; | |
183 | ||
8defab1a DJ |
184 | /* Nonzero if we should show true memory content including |
185 | memory breakpoint inserted by gdb. */ | |
186 | ||
187 | static int show_memory_breakpoints = 0; | |
188 | ||
d914c394 SS |
189 | /* These globals control whether GDB attempts to perform these |
190 | operations; they are useful for targets that need to prevent | |
191 | inadvertant disruption, such as in non-stop mode. */ | |
192 | ||
193 | int may_write_registers = 1; | |
194 | ||
195 | int may_write_memory = 1; | |
196 | ||
197 | int may_insert_breakpoints = 1; | |
198 | ||
199 | int may_insert_tracepoints = 1; | |
200 | ||
201 | int may_insert_fast_tracepoints = 1; | |
202 | ||
203 | int may_stop = 1; | |
204 | ||
c906108c SS |
205 | /* Non-zero if we want to see trace of target level stuff. */ |
206 | ||
207 | static int targetdebug = 0; | |
920d2a44 AC |
208 | static void |
209 | show_targetdebug (struct ui_file *file, int from_tty, | |
210 | struct cmd_list_element *c, const char *value) | |
211 | { | |
212 | fprintf_filtered (file, _("Target debugging is %s.\n"), value); | |
213 | } | |
c906108c | 214 | |
a14ed312 | 215 | static void setup_target_debug (void); |
c906108c | 216 | |
4e5d721f DE |
217 | /* The option sets this. */ |
218 | static int stack_cache_enabled_p_1 = 1; | |
219 | /* And set_stack_cache_enabled_p updates this. | |
220 | The reason for the separation is so that we don't flush the cache for | |
221 | on->on transitions. */ | |
222 | static int stack_cache_enabled_p = 1; | |
223 | ||
224 | /* This is called *after* the stack-cache has been set. | |
225 | Flush the cache for off->on and on->off transitions. | |
226 | There's no real need to flush the cache for on->off transitions, | |
227 | except cleanliness. */ | |
228 | ||
229 | static void | |
230 | set_stack_cache_enabled_p (char *args, int from_tty, | |
231 | struct cmd_list_element *c) | |
232 | { | |
233 | if (stack_cache_enabled_p != stack_cache_enabled_p_1) | |
234 | target_dcache_invalidate (); | |
235 | ||
236 | stack_cache_enabled_p = stack_cache_enabled_p_1; | |
237 | } | |
238 | ||
239 | static void | |
240 | show_stack_cache_enabled_p (struct ui_file *file, int from_tty, | |
241 | struct cmd_list_element *c, const char *value) | |
242 | { | |
243 | fprintf_filtered (file, _("Cache use for stack accesses is %s.\n"), value); | |
244 | } | |
245 | ||
246 | /* Cache of memory operations, to speed up remote access. */ | |
247 | static DCACHE *target_dcache; | |
248 | ||
249 | /* Invalidate the target dcache. */ | |
250 | ||
251 | void | |
252 | target_dcache_invalidate (void) | |
253 | { | |
254 | dcache_invalidate (target_dcache); | |
255 | } | |
4930751a | 256 | |
c906108c SS |
257 | /* The user just typed 'target' without the name of a target. */ |
258 | ||
c906108c | 259 | static void |
fba45db2 | 260 | target_command (char *arg, int from_tty) |
c906108c SS |
261 | { |
262 | fputs_filtered ("Argument required (target name). Try `help target'\n", | |
263 | gdb_stdout); | |
264 | } | |
265 | ||
c35b1492 PA |
266 | /* Default target_has_* methods for process_stratum targets. */ |
267 | ||
268 | int | |
269 | default_child_has_all_memory (struct target_ops *ops) | |
270 | { | |
271 | /* If no inferior selected, then we can't read memory here. */ | |
272 | if (ptid_equal (inferior_ptid, null_ptid)) | |
273 | return 0; | |
274 | ||
275 | return 1; | |
276 | } | |
277 | ||
278 | int | |
279 | default_child_has_memory (struct target_ops *ops) | |
280 | { | |
281 | /* If no inferior selected, then we can't read memory here. */ | |
282 | if (ptid_equal (inferior_ptid, null_ptid)) | |
283 | return 0; | |
284 | ||
285 | return 1; | |
286 | } | |
287 | ||
288 | int | |
289 | default_child_has_stack (struct target_ops *ops) | |
290 | { | |
291 | /* If no inferior selected, there's no stack. */ | |
292 | if (ptid_equal (inferior_ptid, null_ptid)) | |
293 | return 0; | |
294 | ||
295 | return 1; | |
296 | } | |
297 | ||
298 | int | |
299 | default_child_has_registers (struct target_ops *ops) | |
300 | { | |
301 | /* Can't read registers from no inferior. */ | |
302 | if (ptid_equal (inferior_ptid, null_ptid)) | |
303 | return 0; | |
304 | ||
305 | return 1; | |
306 | } | |
307 | ||
308 | int | |
aeaec162 | 309 | default_child_has_execution (struct target_ops *ops, ptid_t the_ptid) |
c35b1492 PA |
310 | { |
311 | /* If there's no thread selected, then we can't make it run through | |
312 | hoops. */ | |
aeaec162 | 313 | if (ptid_equal (the_ptid, null_ptid)) |
c35b1492 PA |
314 | return 0; |
315 | ||
316 | return 1; | |
317 | } | |
318 | ||
319 | ||
320 | int | |
321 | target_has_all_memory_1 (void) | |
322 | { | |
323 | struct target_ops *t; | |
324 | ||
325 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
326 | if (t->to_has_all_memory (t)) | |
327 | return 1; | |
328 | ||
329 | return 0; | |
330 | } | |
331 | ||
332 | int | |
333 | target_has_memory_1 (void) | |
334 | { | |
335 | struct target_ops *t; | |
336 | ||
337 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
338 | if (t->to_has_memory (t)) | |
339 | return 1; | |
340 | ||
341 | return 0; | |
342 | } | |
343 | ||
344 | int | |
345 | target_has_stack_1 (void) | |
346 | { | |
347 | struct target_ops *t; | |
348 | ||
349 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
350 | if (t->to_has_stack (t)) | |
351 | return 1; | |
352 | ||
353 | return 0; | |
354 | } | |
355 | ||
356 | int | |
357 | target_has_registers_1 (void) | |
358 | { | |
359 | struct target_ops *t; | |
360 | ||
361 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
362 | if (t->to_has_registers (t)) | |
363 | return 1; | |
364 | ||
365 | return 0; | |
366 | } | |
367 | ||
368 | int | |
aeaec162 | 369 | target_has_execution_1 (ptid_t the_ptid) |
c35b1492 PA |
370 | { |
371 | struct target_ops *t; | |
372 | ||
373 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
aeaec162 | 374 | if (t->to_has_execution (t, the_ptid)) |
c35b1492 PA |
375 | return 1; |
376 | ||
377 | return 0; | |
378 | } | |
379 | ||
aeaec162 TT |
380 | int |
381 | target_has_execution_current (void) | |
382 | { | |
383 | return target_has_execution_1 (inferior_ptid); | |
384 | } | |
385 | ||
c906108c SS |
386 | /* Add a possible target architecture to the list. */ |
387 | ||
388 | void | |
fba45db2 | 389 | add_target (struct target_ops *t) |
c906108c | 390 | { |
0088c768 | 391 | /* Provide default values for all "must have" methods. */ |
0b603eba AC |
392 | if (t->to_xfer_partial == NULL) |
393 | t->to_xfer_partial = default_xfer_partial; | |
0088c768 | 394 | |
c35b1492 PA |
395 | if (t->to_has_all_memory == NULL) |
396 | t->to_has_all_memory = (int (*) (struct target_ops *)) return_zero; | |
397 | ||
398 | if (t->to_has_memory == NULL) | |
399 | t->to_has_memory = (int (*) (struct target_ops *)) return_zero; | |
400 | ||
401 | if (t->to_has_stack == NULL) | |
402 | t->to_has_stack = (int (*) (struct target_ops *)) return_zero; | |
403 | ||
404 | if (t->to_has_registers == NULL) | |
405 | t->to_has_registers = (int (*) (struct target_ops *)) return_zero; | |
406 | ||
407 | if (t->to_has_execution == NULL) | |
aeaec162 | 408 | t->to_has_execution = (int (*) (struct target_ops *, ptid_t)) return_zero; |
c35b1492 | 409 | |
c906108c SS |
410 | if (!target_structs) |
411 | { | |
412 | target_struct_allocsize = DEFAULT_ALLOCSIZE; | |
413 | target_structs = (struct target_ops **) xmalloc | |
414 | (target_struct_allocsize * sizeof (*target_structs)); | |
415 | } | |
416 | if (target_struct_size >= target_struct_allocsize) | |
417 | { | |
418 | target_struct_allocsize *= 2; | |
419 | target_structs = (struct target_ops **) | |
c5aa993b JM |
420 | xrealloc ((char *) target_structs, |
421 | target_struct_allocsize * sizeof (*target_structs)); | |
c906108c SS |
422 | } |
423 | target_structs[target_struct_size++] = t; | |
c906108c SS |
424 | |
425 | if (targetlist == NULL) | |
1bedd215 AC |
426 | add_prefix_cmd ("target", class_run, target_command, _("\ |
427 | Connect to a target machine or process.\n\ | |
c906108c SS |
428 | The first argument is the type or protocol of the target machine.\n\ |
429 | Remaining arguments are interpreted by the target protocol. For more\n\ | |
430 | information on the arguments for a particular protocol, type\n\ | |
1bedd215 | 431 | `help target ' followed by the protocol name."), |
c906108c SS |
432 | &targetlist, "target ", 0, &cmdlist); |
433 | add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc, &targetlist); | |
434 | } | |
435 | ||
436 | /* Stub functions */ | |
437 | ||
438 | void | |
fba45db2 | 439 | target_ignore (void) |
c906108c SS |
440 | { |
441 | } | |
442 | ||
7d85a9c0 JB |
443 | void |
444 | target_kill (void) | |
445 | { | |
446 | struct target_ops *t; | |
447 | ||
448 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
449 | if (t->to_kill != NULL) | |
450 | { | |
451 | if (targetdebug) | |
452 | fprintf_unfiltered (gdb_stdlog, "target_kill ()\n"); | |
453 | ||
454 | t->to_kill (t); | |
455 | return; | |
456 | } | |
457 | ||
458 | noprocess (); | |
459 | } | |
460 | ||
11cf8741 JM |
461 | void |
462 | target_load (char *arg, int from_tty) | |
463 | { | |
4e5d721f | 464 | target_dcache_invalidate (); |
11cf8741 JM |
465 | (*current_target.to_load) (arg, from_tty); |
466 | } | |
467 | ||
947b8855 PA |
468 | void |
469 | target_create_inferior (char *exec_file, char *args, | |
470 | char **env, int from_tty) | |
136d6dae VP |
471 | { |
472 | struct target_ops *t; | |
5d502164 | 473 | |
136d6dae VP |
474 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
475 | { | |
476 | if (t->to_create_inferior != NULL) | |
477 | { | |
478 | t->to_create_inferior (t, exec_file, args, env, from_tty); | |
947b8855 PA |
479 | if (targetdebug) |
480 | fprintf_unfiltered (gdb_stdlog, | |
481 | "target_create_inferior (%s, %s, xxx, %d)\n", | |
482 | exec_file, args, from_tty); | |
136d6dae VP |
483 | return; |
484 | } | |
485 | } | |
486 | ||
487 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 488 | _("could not find a target to create inferior")); |
136d6dae VP |
489 | } |
490 | ||
d9d2d8b6 PA |
491 | void |
492 | target_terminal_inferior (void) | |
493 | { | |
494 | /* A background resume (``run&'') should leave GDB in control of the | |
c378eb4e | 495 | terminal. Use target_can_async_p, not target_is_async_p, since at |
ba7f6c64 VP |
496 | this point the target is not async yet. However, if sync_execution |
497 | is not set, we know it will become async prior to resume. */ | |
498 | if (target_can_async_p () && !sync_execution) | |
d9d2d8b6 PA |
499 | return; |
500 | ||
501 | /* If GDB is resuming the inferior in the foreground, install | |
502 | inferior's terminal modes. */ | |
503 | (*current_target.to_terminal_inferior) (); | |
504 | } | |
136d6dae | 505 | |
c906108c | 506 | static int |
fba45db2 KB |
507 | nomemory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
508 | struct target_ops *t) | |
c906108c | 509 | { |
c378eb4e MS |
510 | errno = EIO; /* Can't read/write this location. */ |
511 | return 0; /* No bytes handled. */ | |
c906108c SS |
512 | } |
513 | ||
514 | static void | |
fba45db2 | 515 | tcomplain (void) |
c906108c | 516 | { |
8a3fe4f8 | 517 | error (_("You can't do that when your target is `%s'"), |
c906108c SS |
518 | current_target.to_shortname); |
519 | } | |
520 | ||
521 | void | |
fba45db2 | 522 | noprocess (void) |
c906108c | 523 | { |
8a3fe4f8 | 524 | error (_("You can't do that without a process to debug.")); |
c906108c SS |
525 | } |
526 | ||
c906108c | 527 | static void |
fba45db2 | 528 | default_terminal_info (char *args, int from_tty) |
c906108c | 529 | { |
a3f17187 | 530 | printf_unfiltered (_("No saved terminal information.\n")); |
c906108c SS |
531 | } |
532 | ||
0ef643c8 JB |
533 | /* A default implementation for the to_get_ada_task_ptid target method. |
534 | ||
535 | This function builds the PTID by using both LWP and TID as part of | |
536 | the PTID lwp and tid elements. The pid used is the pid of the | |
537 | inferior_ptid. */ | |
538 | ||
2c0b251b | 539 | static ptid_t |
0ef643c8 JB |
540 | default_get_ada_task_ptid (long lwp, long tid) |
541 | { | |
542 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid); | |
543 | } | |
544 | ||
32231432 PA |
545 | static enum exec_direction_kind |
546 | default_execution_direction (void) | |
547 | { | |
548 | if (!target_can_execute_reverse) | |
549 | return EXEC_FORWARD; | |
550 | else if (!target_can_async_p ()) | |
551 | return EXEC_FORWARD; | |
552 | else | |
553 | gdb_assert_not_reached ("\ | |
554 | to_execution_direction must be implemented for reverse async"); | |
555 | } | |
556 | ||
7998dfc3 AC |
557 | /* Go through the target stack from top to bottom, copying over zero |
558 | entries in current_target, then filling in still empty entries. In | |
559 | effect, we are doing class inheritance through the pushed target | |
560 | vectors. | |
561 | ||
562 | NOTE: cagney/2003-10-17: The problem with this inheritance, as it | |
563 | is currently implemented, is that it discards any knowledge of | |
564 | which target an inherited method originally belonged to. | |
565 | Consequently, new new target methods should instead explicitly and | |
566 | locally search the target stack for the target that can handle the | |
567 | request. */ | |
c906108c SS |
568 | |
569 | static void | |
7998dfc3 | 570 | update_current_target (void) |
c906108c | 571 | { |
7998dfc3 AC |
572 | struct target_ops *t; |
573 | ||
08d8bcd7 | 574 | /* First, reset current's contents. */ |
7998dfc3 AC |
575 | memset (¤t_target, 0, sizeof (current_target)); |
576 | ||
577 | #define INHERIT(FIELD, TARGET) \ | |
578 | if (!current_target.FIELD) \ | |
579 | current_target.FIELD = (TARGET)->FIELD | |
580 | ||
581 | for (t = target_stack; t; t = t->beneath) | |
582 | { | |
583 | INHERIT (to_shortname, t); | |
584 | INHERIT (to_longname, t); | |
585 | INHERIT (to_doc, t); | |
b52323fa UW |
586 | /* Do not inherit to_open. */ |
587 | /* Do not inherit to_close. */ | |
136d6dae | 588 | /* Do not inherit to_attach. */ |
7998dfc3 | 589 | INHERIT (to_post_attach, t); |
dc177b7a | 590 | INHERIT (to_attach_no_wait, t); |
136d6dae | 591 | /* Do not inherit to_detach. */ |
597320e7 | 592 | /* Do not inherit to_disconnect. */ |
28439f5e | 593 | /* Do not inherit to_resume. */ |
117de6a9 | 594 | /* Do not inherit to_wait. */ |
28439f5e PA |
595 | /* Do not inherit to_fetch_registers. */ |
596 | /* Do not inherit to_store_registers. */ | |
7998dfc3 | 597 | INHERIT (to_prepare_to_store, t); |
c8e73a31 | 598 | INHERIT (deprecated_xfer_memory, t); |
7998dfc3 AC |
599 | INHERIT (to_files_info, t); |
600 | INHERIT (to_insert_breakpoint, t); | |
601 | INHERIT (to_remove_breakpoint, t); | |
602 | INHERIT (to_can_use_hw_breakpoint, t); | |
603 | INHERIT (to_insert_hw_breakpoint, t); | |
604 | INHERIT (to_remove_hw_breakpoint, t); | |
f1310107 | 605 | /* Do not inherit to_ranged_break_num_registers. */ |
7998dfc3 AC |
606 | INHERIT (to_insert_watchpoint, t); |
607 | INHERIT (to_remove_watchpoint, t); | |
9c06b0b4 TJB |
608 | /* Do not inherit to_insert_mask_watchpoint. */ |
609 | /* Do not inherit to_remove_mask_watchpoint. */ | |
7998dfc3 | 610 | INHERIT (to_stopped_data_address, t); |
74174d2e | 611 | INHERIT (to_have_steppable_watchpoint, t); |
7998dfc3 | 612 | INHERIT (to_have_continuable_watchpoint, t); |
5009afc5 AS |
613 | INHERIT (to_stopped_by_watchpoint, t); |
614 | INHERIT (to_watchpoint_addr_within_range, t); | |
e0d24f8d | 615 | INHERIT (to_region_ok_for_hw_watchpoint, t); |
0cf6dd15 | 616 | INHERIT (to_can_accel_watchpoint_condition, t); |
9c06b0b4 | 617 | /* Do not inherit to_masked_watch_num_registers. */ |
7998dfc3 AC |
618 | INHERIT (to_terminal_init, t); |
619 | INHERIT (to_terminal_inferior, t); | |
620 | INHERIT (to_terminal_ours_for_output, t); | |
621 | INHERIT (to_terminal_ours, t); | |
622 | INHERIT (to_terminal_save_ours, t); | |
623 | INHERIT (to_terminal_info, t); | |
7d85a9c0 | 624 | /* Do not inherit to_kill. */ |
7998dfc3 | 625 | INHERIT (to_load, t); |
136d6dae | 626 | /* Do no inherit to_create_inferior. */ |
7998dfc3 | 627 | INHERIT (to_post_startup_inferior, t); |
7998dfc3 AC |
628 | INHERIT (to_insert_fork_catchpoint, t); |
629 | INHERIT (to_remove_fork_catchpoint, t); | |
630 | INHERIT (to_insert_vfork_catchpoint, t); | |
631 | INHERIT (to_remove_vfork_catchpoint, t); | |
ee057212 | 632 | /* Do not inherit to_follow_fork. */ |
7998dfc3 AC |
633 | INHERIT (to_insert_exec_catchpoint, t); |
634 | INHERIT (to_remove_exec_catchpoint, t); | |
a96d9b2e | 635 | INHERIT (to_set_syscall_catchpoint, t); |
7998dfc3 | 636 | INHERIT (to_has_exited, t); |
82892036 | 637 | /* Do not inherit to_mourn_inferior. */ |
7998dfc3 | 638 | INHERIT (to_can_run, t); |
2455069d | 639 | /* Do not inherit to_pass_signals. */ |
28439f5e PA |
640 | /* Do not inherit to_thread_alive. */ |
641 | /* Do not inherit to_find_new_threads. */ | |
117de6a9 | 642 | /* Do not inherit to_pid_to_str. */ |
7998dfc3 | 643 | INHERIT (to_extra_thread_info, t); |
4694da01 | 644 | INHERIT (to_thread_name, t); |
7998dfc3 | 645 | INHERIT (to_stop, t); |
4b8a223f | 646 | /* Do not inherit to_xfer_partial. */ |
7998dfc3 | 647 | INHERIT (to_rcmd, t); |
7998dfc3 | 648 | INHERIT (to_pid_to_exec_file, t); |
49d03eab | 649 | INHERIT (to_log_command, t); |
7998dfc3 | 650 | INHERIT (to_stratum, t); |
c378eb4e MS |
651 | /* Do not inherit to_has_all_memory. */ |
652 | /* Do not inherit to_has_memory. */ | |
653 | /* Do not inherit to_has_stack. */ | |
654 | /* Do not inherit to_has_registers. */ | |
655 | /* Do not inherit to_has_execution. */ | |
7998dfc3 | 656 | INHERIT (to_has_thread_control, t); |
7998dfc3 AC |
657 | INHERIT (to_can_async_p, t); |
658 | INHERIT (to_is_async_p, t); | |
659 | INHERIT (to_async, t); | |
7998dfc3 AC |
660 | INHERIT (to_find_memory_regions, t); |
661 | INHERIT (to_make_corefile_notes, t); | |
6b04bdb7 MS |
662 | INHERIT (to_get_bookmark, t); |
663 | INHERIT (to_goto_bookmark, t); | |
117de6a9 | 664 | /* Do not inherit to_get_thread_local_address. */ |
b2175913 | 665 | INHERIT (to_can_execute_reverse, t); |
32231432 | 666 | INHERIT (to_execution_direction, t); |
c2250ad1 | 667 | INHERIT (to_thread_architecture, t); |
424163ea | 668 | /* Do not inherit to_read_description. */ |
0ef643c8 | 669 | INHERIT (to_get_ada_task_ptid, t); |
08388c79 | 670 | /* Do not inherit to_search_memory. */ |
8a305172 | 671 | INHERIT (to_supports_multi_process, t); |
d248b706 | 672 | INHERIT (to_supports_enable_disable_tracepoint, t); |
3065dfb6 | 673 | INHERIT (to_supports_string_tracing, t); |
35b1e5cc SS |
674 | INHERIT (to_trace_init, t); |
675 | INHERIT (to_download_tracepoint, t); | |
1e4d1764 | 676 | INHERIT (to_can_download_tracepoint, t); |
35b1e5cc | 677 | INHERIT (to_download_trace_state_variable, t); |
d248b706 KY |
678 | INHERIT (to_enable_tracepoint, t); |
679 | INHERIT (to_disable_tracepoint, t); | |
35b1e5cc SS |
680 | INHERIT (to_trace_set_readonly_regions, t); |
681 | INHERIT (to_trace_start, t); | |
682 | INHERIT (to_get_trace_status, t); | |
f196051f | 683 | INHERIT (to_get_tracepoint_status, t); |
35b1e5cc SS |
684 | INHERIT (to_trace_stop, t); |
685 | INHERIT (to_trace_find, t); | |
686 | INHERIT (to_get_trace_state_variable_value, t); | |
00bf0b85 SS |
687 | INHERIT (to_save_trace_data, t); |
688 | INHERIT (to_upload_tracepoints, t); | |
689 | INHERIT (to_upload_trace_state_variables, t); | |
690 | INHERIT (to_get_raw_trace_data, t); | |
405f8e94 | 691 | INHERIT (to_get_min_fast_tracepoint_insn_len, t); |
35b1e5cc | 692 | INHERIT (to_set_disconnected_tracing, t); |
4daf5ac0 | 693 | INHERIT (to_set_circular_trace_buffer, t); |
f196051f | 694 | INHERIT (to_set_trace_notes, t); |
711e434b | 695 | INHERIT (to_get_tib_address, t); |
d914c394 | 696 | INHERIT (to_set_permissions, t); |
0fb4aa4b PA |
697 | INHERIT (to_static_tracepoint_marker_at, t); |
698 | INHERIT (to_static_tracepoint_markers_by_strid, t); | |
b3b9301e | 699 | INHERIT (to_traceframe_info, t); |
7998dfc3 | 700 | INHERIT (to_magic, t); |
fd79ecee | 701 | /* Do not inherit to_memory_map. */ |
a76d924d DJ |
702 | /* Do not inherit to_flash_erase. */ |
703 | /* Do not inherit to_flash_done. */ | |
7998dfc3 AC |
704 | } |
705 | #undef INHERIT | |
706 | ||
707 | /* Clean up a target struct so it no longer has any zero pointers in | |
0088c768 AC |
708 | it. Some entries are defaulted to a method that print an error, |
709 | others are hard-wired to a standard recursive default. */ | |
c906108c SS |
710 | |
711 | #define de_fault(field, value) \ | |
7998dfc3 AC |
712 | if (!current_target.field) \ |
713 | current_target.field = value | |
0d06e24b | 714 | |
2bc416ba DJ |
715 | de_fault (to_open, |
716 | (void (*) (char *, int)) | |
0d06e24b | 717 | tcomplain); |
2bc416ba DJ |
718 | de_fault (to_close, |
719 | (void (*) (int)) | |
0d06e24b | 720 | target_ignore); |
2bc416ba DJ |
721 | de_fault (to_post_attach, |
722 | (void (*) (int)) | |
0d06e24b | 723 | target_ignore); |
2bc416ba | 724 | de_fault (to_prepare_to_store, |
316f2060 | 725 | (void (*) (struct regcache *)) |
0d06e24b | 726 | noprocess); |
2bc416ba | 727 | de_fault (deprecated_xfer_memory, |
3e43a32a MS |
728 | (int (*) (CORE_ADDR, gdb_byte *, int, int, |
729 | struct mem_attrib *, struct target_ops *)) | |
0d06e24b | 730 | nomemory); |
2bc416ba DJ |
731 | de_fault (to_files_info, |
732 | (void (*) (struct target_ops *)) | |
0d06e24b | 733 | target_ignore); |
2bc416ba | 734 | de_fault (to_insert_breakpoint, |
0d06e24b | 735 | memory_insert_breakpoint); |
2bc416ba | 736 | de_fault (to_remove_breakpoint, |
0d06e24b | 737 | memory_remove_breakpoint); |
ccaa32c7 GS |
738 | de_fault (to_can_use_hw_breakpoint, |
739 | (int (*) (int, int, int)) | |
740 | return_zero); | |
741 | de_fault (to_insert_hw_breakpoint, | |
a6d9a66e | 742 | (int (*) (struct gdbarch *, struct bp_target_info *)) |
ccaa32c7 GS |
743 | return_minus_one); |
744 | de_fault (to_remove_hw_breakpoint, | |
a6d9a66e | 745 | (int (*) (struct gdbarch *, struct bp_target_info *)) |
ccaa32c7 GS |
746 | return_minus_one); |
747 | de_fault (to_insert_watchpoint, | |
0cf6dd15 | 748 | (int (*) (CORE_ADDR, int, int, struct expression *)) |
ccaa32c7 GS |
749 | return_minus_one); |
750 | de_fault (to_remove_watchpoint, | |
0cf6dd15 | 751 | (int (*) (CORE_ADDR, int, int, struct expression *)) |
ccaa32c7 GS |
752 | return_minus_one); |
753 | de_fault (to_stopped_by_watchpoint, | |
754 | (int (*) (void)) | |
755 | return_zero); | |
756 | de_fault (to_stopped_data_address, | |
4aa7a7f5 | 757 | (int (*) (struct target_ops *, CORE_ADDR *)) |
ccaa32c7 | 758 | return_zero); |
5009afc5 AS |
759 | de_fault (to_watchpoint_addr_within_range, |
760 | default_watchpoint_addr_within_range); | |
e0d24f8d WZ |
761 | de_fault (to_region_ok_for_hw_watchpoint, |
762 | default_region_ok_for_hw_watchpoint); | |
0cf6dd15 TJB |
763 | de_fault (to_can_accel_watchpoint_condition, |
764 | (int (*) (CORE_ADDR, int, int, struct expression *)) | |
765 | return_zero); | |
2bc416ba DJ |
766 | de_fault (to_terminal_init, |
767 | (void (*) (void)) | |
0d06e24b | 768 | target_ignore); |
2bc416ba DJ |
769 | de_fault (to_terminal_inferior, |
770 | (void (*) (void)) | |
0d06e24b | 771 | target_ignore); |
2bc416ba DJ |
772 | de_fault (to_terminal_ours_for_output, |
773 | (void (*) (void)) | |
0d06e24b | 774 | target_ignore); |
2bc416ba DJ |
775 | de_fault (to_terminal_ours, |
776 | (void (*) (void)) | |
0d06e24b | 777 | target_ignore); |
2bc416ba DJ |
778 | de_fault (to_terminal_save_ours, |
779 | (void (*) (void)) | |
a790ad35 | 780 | target_ignore); |
2bc416ba | 781 | de_fault (to_terminal_info, |
0d06e24b | 782 | default_terminal_info); |
2bc416ba DJ |
783 | de_fault (to_load, |
784 | (void (*) (char *, int)) | |
0d06e24b | 785 | tcomplain); |
2bc416ba DJ |
786 | de_fault (to_post_startup_inferior, |
787 | (void (*) (ptid_t)) | |
0d06e24b | 788 | target_ignore); |
2bc416ba | 789 | de_fault (to_insert_fork_catchpoint, |
77b06cd7 TJB |
790 | (int (*) (int)) |
791 | return_one); | |
2bc416ba DJ |
792 | de_fault (to_remove_fork_catchpoint, |
793 | (int (*) (int)) | |
77b06cd7 | 794 | return_one); |
2bc416ba | 795 | de_fault (to_insert_vfork_catchpoint, |
77b06cd7 TJB |
796 | (int (*) (int)) |
797 | return_one); | |
2bc416ba DJ |
798 | de_fault (to_remove_vfork_catchpoint, |
799 | (int (*) (int)) | |
77b06cd7 | 800 | return_one); |
2bc416ba | 801 | de_fault (to_insert_exec_catchpoint, |
77b06cd7 TJB |
802 | (int (*) (int)) |
803 | return_one); | |
2bc416ba DJ |
804 | de_fault (to_remove_exec_catchpoint, |
805 | (int (*) (int)) | |
77b06cd7 | 806 | return_one); |
a96d9b2e SDJ |
807 | de_fault (to_set_syscall_catchpoint, |
808 | (int (*) (int, int, int, int, int *)) | |
77b06cd7 | 809 | return_one); |
2bc416ba DJ |
810 | de_fault (to_has_exited, |
811 | (int (*) (int, int, int *)) | |
0d06e24b | 812 | return_zero); |
2bc416ba | 813 | de_fault (to_can_run, |
0d06e24b | 814 | return_zero); |
2bc416ba DJ |
815 | de_fault (to_extra_thread_info, |
816 | (char *(*) (struct thread_info *)) | |
0d06e24b | 817 | return_zero); |
4694da01 TT |
818 | de_fault (to_thread_name, |
819 | (char *(*) (struct thread_info *)) | |
820 | return_zero); | |
2bc416ba | 821 | de_fault (to_stop, |
94cc34af | 822 | (void (*) (ptid_t)) |
0d06e24b | 823 | target_ignore); |
cf7a04e8 | 824 | current_target.to_xfer_partial = current_xfer_partial; |
2bc416ba DJ |
825 | de_fault (to_rcmd, |
826 | (void (*) (char *, struct ui_file *)) | |
0d06e24b | 827 | tcomplain); |
2bc416ba DJ |
828 | de_fault (to_pid_to_exec_file, |
829 | (char *(*) (int)) | |
0d06e24b | 830 | return_zero); |
2bc416ba DJ |
831 | de_fault (to_async, |
832 | (void (*) (void (*) (enum inferior_event_type, void*), void*)) | |
0d06e24b | 833 | tcomplain); |
c2250ad1 UW |
834 | de_fault (to_thread_architecture, |
835 | default_thread_architecture); | |
424163ea | 836 | current_target.to_read_description = NULL; |
0ef643c8 JB |
837 | de_fault (to_get_ada_task_ptid, |
838 | (ptid_t (*) (long, long)) | |
839 | default_get_ada_task_ptid); | |
8a305172 PA |
840 | de_fault (to_supports_multi_process, |
841 | (int (*) (void)) | |
842 | return_zero); | |
d248b706 KY |
843 | de_fault (to_supports_enable_disable_tracepoint, |
844 | (int (*) (void)) | |
845 | return_zero); | |
3065dfb6 SS |
846 | de_fault (to_supports_string_tracing, |
847 | (int (*) (void)) | |
848 | return_zero); | |
35b1e5cc SS |
849 | de_fault (to_trace_init, |
850 | (void (*) (void)) | |
851 | tcomplain); | |
852 | de_fault (to_download_tracepoint, | |
e8ba3115 | 853 | (void (*) (struct bp_location *)) |
35b1e5cc | 854 | tcomplain); |
1e4d1764 YQ |
855 | de_fault (to_can_download_tracepoint, |
856 | (int (*) (void)) | |
857 | return_zero); | |
35b1e5cc SS |
858 | de_fault (to_download_trace_state_variable, |
859 | (void (*) (struct trace_state_variable *)) | |
860 | tcomplain); | |
d248b706 KY |
861 | de_fault (to_enable_tracepoint, |
862 | (void (*) (struct bp_location *)) | |
863 | tcomplain); | |
864 | de_fault (to_disable_tracepoint, | |
865 | (void (*) (struct bp_location *)) | |
866 | tcomplain); | |
35b1e5cc SS |
867 | de_fault (to_trace_set_readonly_regions, |
868 | (void (*) (void)) | |
869 | tcomplain); | |
870 | de_fault (to_trace_start, | |
871 | (void (*) (void)) | |
872 | tcomplain); | |
873 | de_fault (to_get_trace_status, | |
00bf0b85 | 874 | (int (*) (struct trace_status *)) |
35b1e5cc | 875 | return_minus_one); |
f196051f SS |
876 | de_fault (to_get_tracepoint_status, |
877 | (void (*) (struct breakpoint *, struct uploaded_tp *)) | |
878 | tcomplain); | |
35b1e5cc SS |
879 | de_fault (to_trace_stop, |
880 | (void (*) (void)) | |
881 | tcomplain); | |
882 | de_fault (to_trace_find, | |
883 | (int (*) (enum trace_find_type, int, ULONGEST, ULONGEST, int *)) | |
4136fdd2 | 884 | return_minus_one); |
35b1e5cc SS |
885 | de_fault (to_get_trace_state_variable_value, |
886 | (int (*) (int, LONGEST *)) | |
887 | return_zero); | |
00bf0b85 | 888 | de_fault (to_save_trace_data, |
011aacb0 | 889 | (int (*) (const char *)) |
00bf0b85 SS |
890 | tcomplain); |
891 | de_fault (to_upload_tracepoints, | |
892 | (int (*) (struct uploaded_tp **)) | |
893 | return_zero); | |
894 | de_fault (to_upload_trace_state_variables, | |
895 | (int (*) (struct uploaded_tsv **)) | |
896 | return_zero); | |
897 | de_fault (to_get_raw_trace_data, | |
898 | (LONGEST (*) (gdb_byte *, ULONGEST, LONGEST)) | |
899 | tcomplain); | |
405f8e94 SS |
900 | de_fault (to_get_min_fast_tracepoint_insn_len, |
901 | (int (*) (void)) | |
902 | return_minus_one); | |
35b1e5cc SS |
903 | de_fault (to_set_disconnected_tracing, |
904 | (void (*) (int)) | |
4daf5ac0 SS |
905 | target_ignore); |
906 | de_fault (to_set_circular_trace_buffer, | |
907 | (void (*) (int)) | |
908 | target_ignore); | |
f196051f SS |
909 | de_fault (to_set_trace_notes, |
910 | (int (*) (char *, char *, char *)) | |
911 | return_zero); | |
711e434b PM |
912 | de_fault (to_get_tib_address, |
913 | (int (*) (ptid_t, CORE_ADDR *)) | |
914 | tcomplain); | |
d914c394 SS |
915 | de_fault (to_set_permissions, |
916 | (void (*) (void)) | |
917 | target_ignore); | |
0fb4aa4b PA |
918 | de_fault (to_static_tracepoint_marker_at, |
919 | (int (*) (CORE_ADDR, struct static_tracepoint_marker *)) | |
920 | return_zero); | |
921 | de_fault (to_static_tracepoint_markers_by_strid, | |
922 | (VEC(static_tracepoint_marker_p) * (*) (const char *)) | |
923 | tcomplain); | |
b3b9301e PA |
924 | de_fault (to_traceframe_info, |
925 | (struct traceframe_info * (*) (void)) | |
926 | tcomplain); | |
32231432 PA |
927 | de_fault (to_execution_direction, default_execution_direction); |
928 | ||
c906108c | 929 | #undef de_fault |
c906108c | 930 | |
7998dfc3 AC |
931 | /* Finally, position the target-stack beneath the squashed |
932 | "current_target". That way code looking for a non-inherited | |
933 | target method can quickly and simply find it. */ | |
934 | current_target.beneath = target_stack; | |
b4b61fdb DJ |
935 | |
936 | if (targetdebug) | |
937 | setup_target_debug (); | |
c906108c SS |
938 | } |
939 | ||
940 | /* Push a new target type into the stack of the existing target accessors, | |
941 | possibly superseding some of the existing accessors. | |
942 | ||
c906108c SS |
943 | Rather than allow an empty stack, we always have the dummy target at |
944 | the bottom stratum, so we can call the function vectors without | |
945 | checking them. */ | |
946 | ||
b26a4dcb | 947 | void |
fba45db2 | 948 | push_target (struct target_ops *t) |
c906108c | 949 | { |
258b763a | 950 | struct target_ops **cur; |
c906108c SS |
951 | |
952 | /* Check magic number. If wrong, it probably means someone changed | |
953 | the struct definition, but not all the places that initialize one. */ | |
954 | if (t->to_magic != OPS_MAGIC) | |
955 | { | |
c5aa993b JM |
956 | fprintf_unfiltered (gdb_stderr, |
957 | "Magic number of %s target struct wrong\n", | |
958 | t->to_shortname); | |
3e43a32a MS |
959 | internal_error (__FILE__, __LINE__, |
960 | _("failed internal consistency check")); | |
c906108c SS |
961 | } |
962 | ||
258b763a AC |
963 | /* Find the proper stratum to install this target in. */ |
964 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
c906108c | 965 | { |
258b763a | 966 | if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum) |
c906108c SS |
967 | break; |
968 | } | |
969 | ||
258b763a | 970 | /* If there's already targets at this stratum, remove them. */ |
88c231eb | 971 | /* FIXME: cagney/2003-10-15: I think this should be popping all |
258b763a AC |
972 | targets to CUR, and not just those at this stratum level. */ |
973 | while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum) | |
974 | { | |
975 | /* There's already something at this stratum level. Close it, | |
976 | and un-hook it from the stack. */ | |
977 | struct target_ops *tmp = (*cur); | |
5d502164 | 978 | |
258b763a AC |
979 | (*cur) = (*cur)->beneath; |
980 | tmp->beneath = NULL; | |
f1c07ab0 | 981 | target_close (tmp, 0); |
258b763a | 982 | } |
c906108c SS |
983 | |
984 | /* We have removed all targets in our stratum, now add the new one. */ | |
258b763a AC |
985 | t->beneath = (*cur); |
986 | (*cur) = t; | |
c906108c SS |
987 | |
988 | update_current_target (); | |
c906108c SS |
989 | } |
990 | ||
2bc416ba | 991 | /* Remove a target_ops vector from the stack, wherever it may be. |
c906108c SS |
992 | Return how many times it was removed (0 or 1). */ |
993 | ||
994 | int | |
fba45db2 | 995 | unpush_target (struct target_ops *t) |
c906108c | 996 | { |
258b763a AC |
997 | struct target_ops **cur; |
998 | struct target_ops *tmp; | |
c906108c | 999 | |
c8d104ad PA |
1000 | if (t->to_stratum == dummy_stratum) |
1001 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 1002 | _("Attempt to unpush the dummy target")); |
c8d104ad | 1003 | |
c906108c | 1004 | /* Look for the specified target. Note that we assume that a target |
c378eb4e | 1005 | can only occur once in the target stack. */ |
c906108c | 1006 | |
258b763a AC |
1007 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) |
1008 | { | |
1009 | if ((*cur) == t) | |
1010 | break; | |
1011 | } | |
c906108c | 1012 | |
258b763a | 1013 | if ((*cur) == NULL) |
c378eb4e | 1014 | return 0; /* Didn't find target_ops, quit now. */ |
c906108c | 1015 | |
5269965e AC |
1016 | /* NOTE: cagney/2003-12-06: In '94 the close call was made |
1017 | unconditional by moving it to before the above check that the | |
1018 | target was in the target stack (something about "Change the way | |
1019 | pushing and popping of targets work to support target overlays | |
1020 | and inheritance"). This doesn't make much sense - only open | |
1021 | targets should be closed. */ | |
1022 | target_close (t, 0); | |
1023 | ||
c378eb4e | 1024 | /* Unchain the target. */ |
258b763a AC |
1025 | tmp = (*cur); |
1026 | (*cur) = (*cur)->beneath; | |
1027 | tmp->beneath = NULL; | |
c906108c SS |
1028 | |
1029 | update_current_target (); | |
c906108c SS |
1030 | |
1031 | return 1; | |
1032 | } | |
1033 | ||
1034 | void | |
fba45db2 | 1035 | pop_target (void) |
c906108c | 1036 | { |
c378eb4e | 1037 | target_close (target_stack, 0); /* Let it clean up. */ |
258b763a | 1038 | if (unpush_target (target_stack) == 1) |
c906108c SS |
1039 | return; |
1040 | ||
c5aa993b JM |
1041 | fprintf_unfiltered (gdb_stderr, |
1042 | "pop_target couldn't find target %s\n", | |
1043 | current_target.to_shortname); | |
5d502164 MS |
1044 | internal_error (__FILE__, __LINE__, |
1045 | _("failed internal consistency check")); | |
c906108c SS |
1046 | } |
1047 | ||
aa76d38d | 1048 | void |
87ab71f0 | 1049 | pop_all_targets_above (enum strata above_stratum, int quitting) |
aa76d38d | 1050 | { |
87ab71f0 | 1051 | while ((int) (current_target.to_stratum) > (int) above_stratum) |
aa76d38d | 1052 | { |
b52323fa | 1053 | target_close (target_stack, quitting); |
aa76d38d PA |
1054 | if (!unpush_target (target_stack)) |
1055 | { | |
1056 | fprintf_unfiltered (gdb_stderr, | |
1057 | "pop_all_targets couldn't find target %s\n", | |
b52323fa | 1058 | target_stack->to_shortname); |
aa76d38d PA |
1059 | internal_error (__FILE__, __LINE__, |
1060 | _("failed internal consistency check")); | |
1061 | break; | |
1062 | } | |
1063 | } | |
1064 | } | |
1065 | ||
87ab71f0 PA |
1066 | void |
1067 | pop_all_targets (int quitting) | |
1068 | { | |
1069 | pop_all_targets_above (dummy_stratum, quitting); | |
1070 | } | |
1071 | ||
c0edd9ed JK |
1072 | /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */ |
1073 | ||
1074 | int | |
1075 | target_is_pushed (struct target_ops *t) | |
1076 | { | |
1077 | struct target_ops **cur; | |
1078 | ||
1079 | /* Check magic number. If wrong, it probably means someone changed | |
1080 | the struct definition, but not all the places that initialize one. */ | |
1081 | if (t->to_magic != OPS_MAGIC) | |
1082 | { | |
1083 | fprintf_unfiltered (gdb_stderr, | |
1084 | "Magic number of %s target struct wrong\n", | |
1085 | t->to_shortname); | |
3e43a32a MS |
1086 | internal_error (__FILE__, __LINE__, |
1087 | _("failed internal consistency check")); | |
c0edd9ed JK |
1088 | } |
1089 | ||
1090 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
1091 | if (*cur == t) | |
1092 | return 1; | |
1093 | ||
1094 | return 0; | |
1095 | } | |
1096 | ||
72f5cf0e | 1097 | /* Using the objfile specified in OBJFILE, find the address for the |
9e35dae4 DJ |
1098 | current thread's thread-local storage with offset OFFSET. */ |
1099 | CORE_ADDR | |
1100 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) | |
1101 | { | |
1102 | volatile CORE_ADDR addr = 0; | |
117de6a9 PA |
1103 | struct target_ops *target; |
1104 | ||
1105 | for (target = current_target.beneath; | |
1106 | target != NULL; | |
1107 | target = target->beneath) | |
1108 | { | |
1109 | if (target->to_get_thread_local_address != NULL) | |
1110 | break; | |
1111 | } | |
9e35dae4 | 1112 | |
117de6a9 | 1113 | if (target != NULL |
1cf3db46 | 1114 | && gdbarch_fetch_tls_load_module_address_p (target_gdbarch)) |
9e35dae4 DJ |
1115 | { |
1116 | ptid_t ptid = inferior_ptid; | |
1117 | volatile struct gdb_exception ex; | |
1118 | ||
1119 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
1120 | { | |
1121 | CORE_ADDR lm_addr; | |
1122 | ||
1123 | /* Fetch the load module address for this objfile. */ | |
1cf3db46 | 1124 | lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch, |
9e35dae4 DJ |
1125 | objfile); |
1126 | /* If it's 0, throw the appropriate exception. */ | |
1127 | if (lm_addr == 0) | |
1128 | throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR, | |
1129 | _("TLS load module not found")); | |
1130 | ||
3e43a32a MS |
1131 | addr = target->to_get_thread_local_address (target, ptid, |
1132 | lm_addr, offset); | |
9e35dae4 DJ |
1133 | } |
1134 | /* If an error occurred, print TLS related messages here. Otherwise, | |
1135 | throw the error to some higher catcher. */ | |
1136 | if (ex.reason < 0) | |
1137 | { | |
1138 | int objfile_is_library = (objfile->flags & OBJF_SHARED); | |
1139 | ||
1140 | switch (ex.error) | |
1141 | { | |
1142 | case TLS_NO_LIBRARY_SUPPORT_ERROR: | |
3e43a32a MS |
1143 | error (_("Cannot find thread-local variables " |
1144 | "in this thread library.")); | |
9e35dae4 DJ |
1145 | break; |
1146 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: | |
1147 | if (objfile_is_library) | |
1148 | error (_("Cannot find shared library `%s' in dynamic" | |
1149 | " linker's load module list"), objfile->name); | |
1150 | else | |
1151 | error (_("Cannot find executable file `%s' in dynamic" | |
1152 | " linker's load module list"), objfile->name); | |
1153 | break; | |
1154 | case TLS_NOT_ALLOCATED_YET_ERROR: | |
1155 | if (objfile_is_library) | |
1156 | error (_("The inferior has not yet allocated storage for" | |
1157 | " thread-local variables in\n" | |
1158 | "the shared library `%s'\n" | |
1159 | "for %s"), | |
1160 | objfile->name, target_pid_to_str (ptid)); | |
1161 | else | |
1162 | error (_("The inferior has not yet allocated storage for" | |
1163 | " thread-local variables in\n" | |
1164 | "the executable `%s'\n" | |
1165 | "for %s"), | |
1166 | objfile->name, target_pid_to_str (ptid)); | |
1167 | break; | |
1168 | case TLS_GENERIC_ERROR: | |
1169 | if (objfile_is_library) | |
1170 | error (_("Cannot find thread-local storage for %s, " | |
1171 | "shared library %s:\n%s"), | |
1172 | target_pid_to_str (ptid), | |
1173 | objfile->name, ex.message); | |
1174 | else | |
1175 | error (_("Cannot find thread-local storage for %s, " | |
1176 | "executable file %s:\n%s"), | |
1177 | target_pid_to_str (ptid), | |
1178 | objfile->name, ex.message); | |
1179 | break; | |
1180 | default: | |
1181 | throw_exception (ex); | |
1182 | break; | |
1183 | } | |
1184 | } | |
1185 | } | |
1186 | /* It wouldn't be wrong here to try a gdbarch method, too; finding | |
1187 | TLS is an ABI-specific thing. But we don't do that yet. */ | |
1188 | else | |
1189 | error (_("Cannot find thread-local variables on this target")); | |
1190 | ||
1191 | return addr; | |
1192 | } | |
1193 | ||
c906108c SS |
1194 | #undef MIN |
1195 | #define MIN(A, B) (((A) <= (B)) ? (A) : (B)) | |
1196 | ||
1197 | /* target_read_string -- read a null terminated string, up to LEN bytes, | |
1198 | from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful. | |
1199 | Set *STRING to a pointer to malloc'd memory containing the data; the caller | |
1200 | is responsible for freeing it. Return the number of bytes successfully | |
1201 | read. */ | |
1202 | ||
1203 | int | |
fba45db2 | 1204 | target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop) |
c906108c SS |
1205 | { |
1206 | int tlen, origlen, offset, i; | |
1b0ba102 | 1207 | gdb_byte buf[4]; |
c906108c SS |
1208 | int errcode = 0; |
1209 | char *buffer; | |
1210 | int buffer_allocated; | |
1211 | char *bufptr; | |
1212 | unsigned int nbytes_read = 0; | |
1213 | ||
6217bf3e MS |
1214 | gdb_assert (string); |
1215 | ||
c906108c SS |
1216 | /* Small for testing. */ |
1217 | buffer_allocated = 4; | |
1218 | buffer = xmalloc (buffer_allocated); | |
1219 | bufptr = buffer; | |
1220 | ||
1221 | origlen = len; | |
1222 | ||
1223 | while (len > 0) | |
1224 | { | |
1225 | tlen = MIN (len, 4 - (memaddr & 3)); | |
1226 | offset = memaddr & 3; | |
1227 | ||
1b0ba102 | 1228 | errcode = target_read_memory (memaddr & ~3, buf, sizeof buf); |
c906108c SS |
1229 | if (errcode != 0) |
1230 | { | |
1231 | /* The transfer request might have crossed the boundary to an | |
c378eb4e | 1232 | unallocated region of memory. Retry the transfer, requesting |
c906108c SS |
1233 | a single byte. */ |
1234 | tlen = 1; | |
1235 | offset = 0; | |
b8eb5af0 | 1236 | errcode = target_read_memory (memaddr, buf, 1); |
c906108c SS |
1237 | if (errcode != 0) |
1238 | goto done; | |
1239 | } | |
1240 | ||
1241 | if (bufptr - buffer + tlen > buffer_allocated) | |
1242 | { | |
1243 | unsigned int bytes; | |
5d502164 | 1244 | |
c906108c SS |
1245 | bytes = bufptr - buffer; |
1246 | buffer_allocated *= 2; | |
1247 | buffer = xrealloc (buffer, buffer_allocated); | |
1248 | bufptr = buffer + bytes; | |
1249 | } | |
1250 | ||
1251 | for (i = 0; i < tlen; i++) | |
1252 | { | |
1253 | *bufptr++ = buf[i + offset]; | |
1254 | if (buf[i + offset] == '\000') | |
1255 | { | |
1256 | nbytes_read += i + 1; | |
1257 | goto done; | |
1258 | } | |
1259 | } | |
1260 | ||
1261 | memaddr += tlen; | |
1262 | len -= tlen; | |
1263 | nbytes_read += tlen; | |
1264 | } | |
c5aa993b | 1265 | done: |
6217bf3e | 1266 | *string = buffer; |
c906108c SS |
1267 | if (errnop != NULL) |
1268 | *errnop = errcode; | |
c906108c SS |
1269 | return nbytes_read; |
1270 | } | |
1271 | ||
07b82ea5 PA |
1272 | struct target_section_table * |
1273 | target_get_section_table (struct target_ops *target) | |
1274 | { | |
1275 | struct target_ops *t; | |
1276 | ||
1277 | if (targetdebug) | |
1278 | fprintf_unfiltered (gdb_stdlog, "target_get_section_table ()\n"); | |
1279 | ||
1280 | for (t = target; t != NULL; t = t->beneath) | |
1281 | if (t->to_get_section_table != NULL) | |
1282 | return (*t->to_get_section_table) (t); | |
1283 | ||
1284 | return NULL; | |
1285 | } | |
1286 | ||
8db32d44 | 1287 | /* Find a section containing ADDR. */ |
07b82ea5 | 1288 | |
0542c86d | 1289 | struct target_section * |
8db32d44 AC |
1290 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
1291 | { | |
07b82ea5 | 1292 | struct target_section_table *table = target_get_section_table (target); |
0542c86d | 1293 | struct target_section *secp; |
07b82ea5 PA |
1294 | |
1295 | if (table == NULL) | |
1296 | return NULL; | |
1297 | ||
1298 | for (secp = table->sections; secp < table->sections_end; secp++) | |
8db32d44 AC |
1299 | { |
1300 | if (addr >= secp->addr && addr < secp->endaddr) | |
1301 | return secp; | |
1302 | } | |
1303 | return NULL; | |
1304 | } | |
1305 | ||
e6e4e701 PA |
1306 | /* Read memory from the live target, even if currently inspecting a |
1307 | traceframe. The return is the same as that of target_read. */ | |
1308 | ||
1309 | static LONGEST | |
1310 | target_read_live_memory (enum target_object object, | |
1311 | ULONGEST memaddr, gdb_byte *myaddr, LONGEST len) | |
1312 | { | |
1313 | int ret; | |
1314 | struct cleanup *cleanup; | |
1315 | ||
1316 | /* Switch momentarily out of tfind mode so to access live memory. | |
1317 | Note that this must not clear global state, such as the frame | |
1318 | cache, which must still remain valid for the previous traceframe. | |
1319 | We may be _building_ the frame cache at this point. */ | |
1320 | cleanup = make_cleanup_restore_traceframe_number (); | |
1321 | set_traceframe_number (-1); | |
1322 | ||
1323 | ret = target_read (current_target.beneath, object, NULL, | |
1324 | myaddr, memaddr, len); | |
1325 | ||
1326 | do_cleanups (cleanup); | |
1327 | return ret; | |
1328 | } | |
1329 | ||
1330 | /* Using the set of read-only target sections of OPS, read live | |
1331 | read-only memory. Note that the actual reads start from the | |
5657161f PA |
1332 | top-most target again. |
1333 | ||
1334 | For interface/parameters/return description see target.h, | |
1335 | to_xfer_partial. */ | |
e6e4e701 PA |
1336 | |
1337 | static LONGEST | |
1338 | memory_xfer_live_readonly_partial (struct target_ops *ops, | |
1339 | enum target_object object, | |
1340 | gdb_byte *readbuf, ULONGEST memaddr, | |
1341 | LONGEST len) | |
1342 | { | |
1343 | struct target_section *secp; | |
1344 | struct target_section_table *table; | |
1345 | ||
1346 | secp = target_section_by_addr (ops, memaddr); | |
1347 | if (secp != NULL | |
1348 | && (bfd_get_section_flags (secp->bfd, secp->the_bfd_section) | |
1349 | & SEC_READONLY)) | |
1350 | { | |
1351 | struct target_section *p; | |
1352 | ULONGEST memend = memaddr + len; | |
1353 | ||
1354 | table = target_get_section_table (ops); | |
1355 | ||
1356 | for (p = table->sections; p < table->sections_end; p++) | |
1357 | { | |
1358 | if (memaddr >= p->addr) | |
1359 | { | |
1360 | if (memend <= p->endaddr) | |
1361 | { | |
1362 | /* Entire transfer is within this section. */ | |
1363 | return target_read_live_memory (object, memaddr, | |
1364 | readbuf, len); | |
1365 | } | |
1366 | else if (memaddr >= p->endaddr) | |
1367 | { | |
1368 | /* This section ends before the transfer starts. */ | |
1369 | continue; | |
1370 | } | |
1371 | else | |
1372 | { | |
1373 | /* This section overlaps the transfer. Just do half. */ | |
1374 | len = p->endaddr - memaddr; | |
1375 | return target_read_live_memory (object, memaddr, | |
1376 | readbuf, len); | |
1377 | } | |
1378 | } | |
1379 | } | |
1380 | } | |
1381 | ||
1382 | return 0; | |
1383 | } | |
1384 | ||
7f79c47e DE |
1385 | /* Perform a partial memory transfer. |
1386 | For docs see target.h, to_xfer_partial. */ | |
cf7a04e8 DJ |
1387 | |
1388 | static LONGEST | |
f0ba3972 PA |
1389 | memory_xfer_partial_1 (struct target_ops *ops, enum target_object object, |
1390 | void *readbuf, const void *writebuf, ULONGEST memaddr, | |
1391 | LONGEST len) | |
0779438d | 1392 | { |
cf7a04e8 DJ |
1393 | LONGEST res; |
1394 | int reg_len; | |
1395 | struct mem_region *region; | |
4e5d721f | 1396 | struct inferior *inf; |
cf7a04e8 | 1397 | |
07b82ea5 PA |
1398 | /* For accesses to unmapped overlay sections, read directly from |
1399 | files. Must do this first, as MEMADDR may need adjustment. */ | |
1400 | if (readbuf != NULL && overlay_debugging) | |
1401 | { | |
1402 | struct obj_section *section = find_pc_overlay (memaddr); | |
5d502164 | 1403 | |
07b82ea5 PA |
1404 | if (pc_in_unmapped_range (memaddr, section)) |
1405 | { | |
1406 | struct target_section_table *table | |
1407 | = target_get_section_table (ops); | |
1408 | const char *section_name = section->the_bfd_section->name; | |
5d502164 | 1409 | |
07b82ea5 PA |
1410 | memaddr = overlay_mapped_address (memaddr, section); |
1411 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
1412 | memaddr, len, | |
1413 | table->sections, | |
1414 | table->sections_end, | |
1415 | section_name); | |
1416 | } | |
1417 | } | |
1418 | ||
1419 | /* Try the executable files, if "trust-readonly-sections" is set. */ | |
cf7a04e8 DJ |
1420 | if (readbuf != NULL && trust_readonly) |
1421 | { | |
0542c86d | 1422 | struct target_section *secp; |
07b82ea5 | 1423 | struct target_section_table *table; |
cf7a04e8 DJ |
1424 | |
1425 | secp = target_section_by_addr (ops, memaddr); | |
1426 | if (secp != NULL | |
1427 | && (bfd_get_section_flags (secp->bfd, secp->the_bfd_section) | |
1428 | & SEC_READONLY)) | |
07b82ea5 PA |
1429 | { |
1430 | table = target_get_section_table (ops); | |
1431 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
1432 | memaddr, len, | |
1433 | table->sections, | |
1434 | table->sections_end, | |
1435 | NULL); | |
1436 | } | |
98646950 UW |
1437 | } |
1438 | ||
e6e4e701 PA |
1439 | /* If reading unavailable memory in the context of traceframes, and |
1440 | this address falls within a read-only section, fallback to | |
1441 | reading from live memory. */ | |
1442 | if (readbuf != NULL && get_traceframe_number () != -1) | |
1443 | { | |
1444 | VEC(mem_range_s) *available; | |
1445 | ||
1446 | /* If we fail to get the set of available memory, then the | |
1447 | target does not support querying traceframe info, and so we | |
1448 | attempt reading from the traceframe anyway (assuming the | |
1449 | target implements the old QTro packet then). */ | |
1450 | if (traceframe_available_memory (&available, memaddr, len)) | |
1451 | { | |
1452 | struct cleanup *old_chain; | |
1453 | ||
1454 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available); | |
1455 | ||
1456 | if (VEC_empty (mem_range_s, available) | |
1457 | || VEC_index (mem_range_s, available, 0)->start != memaddr) | |
1458 | { | |
1459 | /* Don't read into the traceframe's available | |
1460 | memory. */ | |
1461 | if (!VEC_empty (mem_range_s, available)) | |
1462 | { | |
1463 | LONGEST oldlen = len; | |
1464 | ||
1465 | len = VEC_index (mem_range_s, available, 0)->start - memaddr; | |
1466 | gdb_assert (len <= oldlen); | |
1467 | } | |
1468 | ||
1469 | do_cleanups (old_chain); | |
1470 | ||
1471 | /* This goes through the topmost target again. */ | |
1472 | res = memory_xfer_live_readonly_partial (ops, object, | |
1473 | readbuf, memaddr, len); | |
1474 | if (res > 0) | |
1475 | return res; | |
1476 | ||
1477 | /* No use trying further, we know some memory starting | |
1478 | at MEMADDR isn't available. */ | |
1479 | return -1; | |
1480 | } | |
1481 | ||
1482 | /* Don't try to read more than how much is available, in | |
1483 | case the target implements the deprecated QTro packet to | |
1484 | cater for older GDBs (the target's knowledge of read-only | |
1485 | sections may be outdated by now). */ | |
1486 | len = VEC_index (mem_range_s, available, 0)->length; | |
1487 | ||
1488 | do_cleanups (old_chain); | |
1489 | } | |
1490 | } | |
1491 | ||
cf7a04e8 DJ |
1492 | /* Try GDB's internal data cache. */ |
1493 | region = lookup_mem_region (memaddr); | |
4b5752d0 VP |
1494 | /* region->hi == 0 means there's no upper bound. */ |
1495 | if (memaddr + len < region->hi || region->hi == 0) | |
cf7a04e8 DJ |
1496 | reg_len = len; |
1497 | else | |
1498 | reg_len = region->hi - memaddr; | |
1499 | ||
1500 | switch (region->attrib.mode) | |
1501 | { | |
1502 | case MEM_RO: | |
1503 | if (writebuf != NULL) | |
1504 | return -1; | |
1505 | break; | |
1506 | ||
1507 | case MEM_WO: | |
1508 | if (readbuf != NULL) | |
1509 | return -1; | |
1510 | break; | |
a76d924d DJ |
1511 | |
1512 | case MEM_FLASH: | |
1513 | /* We only support writing to flash during "load" for now. */ | |
1514 | if (writebuf != NULL) | |
1515 | error (_("Writing to flash memory forbidden in this context")); | |
1516 | break; | |
4b5752d0 VP |
1517 | |
1518 | case MEM_NONE: | |
1519 | return -1; | |
cf7a04e8 DJ |
1520 | } |
1521 | ||
6c95b8df PA |
1522 | if (!ptid_equal (inferior_ptid, null_ptid)) |
1523 | inf = find_inferior_pid (ptid_get_pid (inferior_ptid)); | |
1524 | else | |
1525 | inf = NULL; | |
4e5d721f DE |
1526 | |
1527 | if (inf != NULL | |
2f4d8875 PA |
1528 | /* The dcache reads whole cache lines; that doesn't play well |
1529 | with reading from a trace buffer, because reading outside of | |
1530 | the collected memory range fails. */ | |
1531 | && get_traceframe_number () == -1 | |
4e5d721f DE |
1532 | && (region->attrib.cache |
1533 | || (stack_cache_enabled_p && object == TARGET_OBJECT_STACK_MEMORY))) | |
cf7a04e8 | 1534 | { |
cf7a04e8 | 1535 | if (readbuf != NULL) |
25f122dc | 1536 | res = dcache_xfer_memory (ops, target_dcache, memaddr, readbuf, |
cf7a04e8 DJ |
1537 | reg_len, 0); |
1538 | else | |
1539 | /* FIXME drow/2006-08-09: If we're going to preserve const | |
1540 | correctness dcache_xfer_memory should take readbuf and | |
1541 | writebuf. */ | |
25f122dc | 1542 | res = dcache_xfer_memory (ops, target_dcache, memaddr, |
cf7a04e8 DJ |
1543 | (void *) writebuf, |
1544 | reg_len, 1); | |
1545 | if (res <= 0) | |
1546 | return -1; | |
1547 | else | |
f0ba3972 | 1548 | return res; |
cf7a04e8 DJ |
1549 | } |
1550 | ||
1551 | /* If none of those methods found the memory we wanted, fall back | |
1552 | to a target partial transfer. Normally a single call to | |
1553 | to_xfer_partial is enough; if it doesn't recognize an object | |
1554 | it will call the to_xfer_partial of the next target down. | |
1555 | But for memory this won't do. Memory is the only target | |
1556 | object which can be read from more than one valid target. | |
1557 | A core file, for instance, could have some of memory but | |
1558 | delegate other bits to the target below it. So, we must | |
1559 | manually try all targets. */ | |
1560 | ||
1561 | do | |
1562 | { | |
1563 | res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
4b5752d0 | 1564 | readbuf, writebuf, memaddr, reg_len); |
cf7a04e8 | 1565 | if (res > 0) |
8defab1a | 1566 | break; |
cf7a04e8 | 1567 | |
5ad3a4ca DJ |
1568 | /* We want to continue past core files to executables, but not |
1569 | past a running target's memory. */ | |
c35b1492 | 1570 | if (ops->to_has_all_memory (ops)) |
8defab1a | 1571 | break; |
5ad3a4ca | 1572 | |
cf7a04e8 DJ |
1573 | ops = ops->beneath; |
1574 | } | |
1575 | while (ops != NULL); | |
1576 | ||
41dcd03f DE |
1577 | /* Make sure the cache gets updated no matter what - if we are writing |
1578 | to the stack. Even if this write is not tagged as such, we still need | |
1579 | to update the cache. */ | |
1580 | ||
1581 | if (res > 0 | |
1582 | && inf != NULL | |
1583 | && writebuf != NULL | |
1584 | && !region->attrib.cache | |
1585 | && stack_cache_enabled_p | |
1586 | && object != TARGET_OBJECT_STACK_MEMORY) | |
1587 | { | |
7d4f32d3 | 1588 | dcache_update (target_dcache, memaddr, (void *) writebuf, res); |
41dcd03f DE |
1589 | } |
1590 | ||
cf7a04e8 DJ |
1591 | /* If we still haven't got anything, return the last error. We |
1592 | give up. */ | |
1593 | return res; | |
0779438d AC |
1594 | } |
1595 | ||
f0ba3972 PA |
1596 | /* Perform a partial memory transfer. For docs see target.h, |
1597 | to_xfer_partial. */ | |
1598 | ||
1599 | static LONGEST | |
1600 | memory_xfer_partial (struct target_ops *ops, enum target_object object, | |
1601 | void *readbuf, const void *writebuf, ULONGEST memaddr, | |
1602 | LONGEST len) | |
1603 | { | |
1604 | int res; | |
1605 | ||
1606 | /* Zero length requests are ok and require no work. */ | |
1607 | if (len == 0) | |
1608 | return 0; | |
1609 | ||
1610 | /* Fill in READBUF with breakpoint shadows, or WRITEBUF with | |
1611 | breakpoint insns, thus hiding out from higher layers whether | |
1612 | there are software breakpoints inserted in the code stream. */ | |
1613 | if (readbuf != NULL) | |
1614 | { | |
1615 | res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len); | |
1616 | ||
1617 | if (res > 0 && !show_memory_breakpoints) | |
1618 | breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, res); | |
1619 | } | |
1620 | else | |
1621 | { | |
1622 | void *buf; | |
1623 | struct cleanup *old_chain; | |
1624 | ||
1625 | buf = xmalloc (len); | |
1626 | old_chain = make_cleanup (xfree, buf); | |
1627 | memcpy (buf, writebuf, len); | |
1628 | ||
1629 | breakpoint_xfer_memory (NULL, buf, writebuf, memaddr, len); | |
1630 | res = memory_xfer_partial_1 (ops, object, NULL, buf, memaddr, len); | |
1631 | ||
1632 | do_cleanups (old_chain); | |
1633 | } | |
1634 | ||
1635 | return res; | |
1636 | } | |
1637 | ||
8defab1a DJ |
1638 | static void |
1639 | restore_show_memory_breakpoints (void *arg) | |
1640 | { | |
1641 | show_memory_breakpoints = (uintptr_t) arg; | |
1642 | } | |
1643 | ||
1644 | struct cleanup * | |
1645 | make_show_memory_breakpoints_cleanup (int show) | |
1646 | { | |
1647 | int current = show_memory_breakpoints; | |
8defab1a | 1648 | |
5d502164 | 1649 | show_memory_breakpoints = show; |
8defab1a DJ |
1650 | return make_cleanup (restore_show_memory_breakpoints, |
1651 | (void *) (uintptr_t) current); | |
1652 | } | |
1653 | ||
7f79c47e DE |
1654 | /* For docs see target.h, to_xfer_partial. */ |
1655 | ||
27394598 AC |
1656 | static LONGEST |
1657 | target_xfer_partial (struct target_ops *ops, | |
1658 | enum target_object object, const char *annex, | |
1659 | void *readbuf, const void *writebuf, | |
1660 | ULONGEST offset, LONGEST len) | |
1661 | { | |
1662 | LONGEST retval; | |
1663 | ||
1664 | gdb_assert (ops->to_xfer_partial != NULL); | |
cf7a04e8 | 1665 | |
d914c394 SS |
1666 | if (writebuf && !may_write_memory) |
1667 | error (_("Writing to memory is not allowed (addr %s, len %s)"), | |
1668 | core_addr_to_string_nz (offset), plongest (len)); | |
1669 | ||
cf7a04e8 DJ |
1670 | /* If this is a memory transfer, let the memory-specific code |
1671 | have a look at it instead. Memory transfers are more | |
1672 | complicated. */ | |
4e5d721f DE |
1673 | if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY) |
1674 | retval = memory_xfer_partial (ops, object, readbuf, | |
1675 | writebuf, offset, len); | |
cf7a04e8 DJ |
1676 | else |
1677 | { | |
1678 | enum target_object raw_object = object; | |
1679 | ||
1680 | /* If this is a raw memory transfer, request the normal | |
1681 | memory object from other layers. */ | |
1682 | if (raw_object == TARGET_OBJECT_RAW_MEMORY) | |
1683 | raw_object = TARGET_OBJECT_MEMORY; | |
1684 | ||
1685 | retval = ops->to_xfer_partial (ops, raw_object, annex, readbuf, | |
1686 | writebuf, offset, len); | |
1687 | } | |
1688 | ||
27394598 AC |
1689 | if (targetdebug) |
1690 | { | |
1691 | const unsigned char *myaddr = NULL; | |
1692 | ||
1693 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
1694 | "%s:target_xfer_partial " |
1695 | "(%d, %s, %s, %s, %s, %s) = %s", | |
27394598 AC |
1696 | ops->to_shortname, |
1697 | (int) object, | |
1698 | (annex ? annex : "(null)"), | |
53b71562 JB |
1699 | host_address_to_string (readbuf), |
1700 | host_address_to_string (writebuf), | |
0b1553bc UW |
1701 | core_addr_to_string_nz (offset), |
1702 | plongest (len), plongest (retval)); | |
27394598 AC |
1703 | |
1704 | if (readbuf) | |
1705 | myaddr = readbuf; | |
1706 | if (writebuf) | |
1707 | myaddr = writebuf; | |
1708 | if (retval > 0 && myaddr != NULL) | |
1709 | { | |
1710 | int i; | |
2bc416ba | 1711 | |
27394598 AC |
1712 | fputs_unfiltered (", bytes =", gdb_stdlog); |
1713 | for (i = 0; i < retval; i++) | |
1714 | { | |
53b71562 | 1715 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1716 | { |
1717 | if (targetdebug < 2 && i > 0) | |
1718 | { | |
1719 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
1720 | break; | |
1721 | } | |
1722 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1723 | } | |
2bc416ba | 1724 | |
27394598 AC |
1725 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
1726 | } | |
1727 | } | |
2bc416ba | 1728 | |
27394598 AC |
1729 | fputc_unfiltered ('\n', gdb_stdlog); |
1730 | } | |
1731 | return retval; | |
1732 | } | |
1733 | ||
c906108c SS |
1734 | /* Read LEN bytes of target memory at address MEMADDR, placing the results in |
1735 | GDB's memory at MYADDR. Returns either 0 for success or an errno value | |
1736 | if any error occurs. | |
1737 | ||
1738 | If an error occurs, no guarantee is made about the contents of the data at | |
1739 | MYADDR. In particular, the caller should not depend upon partial reads | |
1740 | filling the buffer with good data. There is no way for the caller to know | |
1741 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 | 1742 | deal with partial reads should call target_read (which will retry until |
c378eb4e | 1743 | it makes no progress, and then return how much was transferred). */ |
c906108c SS |
1744 | |
1745 | int | |
fc1a4b47 | 1746 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 1747 | { |
c35b1492 PA |
1748 | /* Dispatch to the topmost target, not the flattened current_target. |
1749 | Memory accesses check target->to_has_(all_)memory, and the | |
1750 | flattened target doesn't inherit those. */ | |
1751 | if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1752 | myaddr, memaddr, len) == len) |
1753 | return 0; | |
0779438d | 1754 | else |
cf7a04e8 | 1755 | return EIO; |
c906108c SS |
1756 | } |
1757 | ||
4e5d721f DE |
1758 | /* Like target_read_memory, but specify explicitly that this is a read from |
1759 | the target's stack. This may trigger different cache behavior. */ | |
1760 | ||
1761 | int | |
1762 | target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, int len) | |
1763 | { | |
1764 | /* Dispatch to the topmost target, not the flattened current_target. | |
1765 | Memory accesses check target->to_has_(all_)memory, and the | |
1766 | flattened target doesn't inherit those. */ | |
1767 | ||
1768 | if (target_read (current_target.beneath, TARGET_OBJECT_STACK_MEMORY, NULL, | |
1769 | myaddr, memaddr, len) == len) | |
1770 | return 0; | |
1771 | else | |
1772 | return EIO; | |
1773 | } | |
1774 | ||
7f79c47e DE |
1775 | /* Write LEN bytes from MYADDR to target memory at address MEMADDR. |
1776 | Returns either 0 for success or an errno value if any error occurs. | |
1777 | If an error occurs, no guarantee is made about how much data got written. | |
1778 | Callers that can deal with partial writes should call target_write. */ | |
1779 | ||
c906108c | 1780 | int |
fc1a4b47 | 1781 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) |
c906108c | 1782 | { |
c35b1492 PA |
1783 | /* Dispatch to the topmost target, not the flattened current_target. |
1784 | Memory accesses check target->to_has_(all_)memory, and the | |
1785 | flattened target doesn't inherit those. */ | |
1786 | if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1787 | myaddr, memaddr, len) == len) |
1788 | return 0; | |
0779438d | 1789 | else |
cf7a04e8 | 1790 | return EIO; |
c906108c | 1791 | } |
c5aa993b | 1792 | |
f0ba3972 PA |
1793 | /* Write LEN bytes from MYADDR to target raw memory at address |
1794 | MEMADDR. Returns either 0 for success or an errno value if any | |
1795 | error occurs. If an error occurs, no guarantee is made about how | |
1796 | much data got written. Callers that can deal with partial writes | |
1797 | should call target_write. */ | |
1798 | ||
1799 | int | |
1800 | target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) | |
1801 | { | |
1802 | /* Dispatch to the topmost target, not the flattened current_target. | |
1803 | Memory accesses check target->to_has_(all_)memory, and the | |
1804 | flattened target doesn't inherit those. */ | |
1805 | if (target_write (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, | |
1806 | myaddr, memaddr, len) == len) | |
1807 | return 0; | |
1808 | else | |
1809 | return EIO; | |
1810 | } | |
1811 | ||
fd79ecee DJ |
1812 | /* Fetch the target's memory map. */ |
1813 | ||
1814 | VEC(mem_region_s) * | |
1815 | target_memory_map (void) | |
1816 | { | |
1817 | VEC(mem_region_s) *result; | |
1818 | struct mem_region *last_one, *this_one; | |
1819 | int ix; | |
1820 | struct target_ops *t; | |
1821 | ||
1822 | if (targetdebug) | |
1823 | fprintf_unfiltered (gdb_stdlog, "target_memory_map ()\n"); | |
1824 | ||
1825 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1826 | if (t->to_memory_map != NULL) | |
1827 | break; | |
1828 | ||
1829 | if (t == NULL) | |
1830 | return NULL; | |
1831 | ||
1832 | result = t->to_memory_map (t); | |
1833 | if (result == NULL) | |
1834 | return NULL; | |
1835 | ||
1836 | qsort (VEC_address (mem_region_s, result), | |
1837 | VEC_length (mem_region_s, result), | |
1838 | sizeof (struct mem_region), mem_region_cmp); | |
1839 | ||
1840 | /* Check that regions do not overlap. Simultaneously assign | |
1841 | a numbering for the "mem" commands to use to refer to | |
1842 | each region. */ | |
1843 | last_one = NULL; | |
1844 | for (ix = 0; VEC_iterate (mem_region_s, result, ix, this_one); ix++) | |
1845 | { | |
1846 | this_one->number = ix; | |
1847 | ||
1848 | if (last_one && last_one->hi > this_one->lo) | |
1849 | { | |
1850 | warning (_("Overlapping regions in memory map: ignoring")); | |
1851 | VEC_free (mem_region_s, result); | |
1852 | return NULL; | |
1853 | } | |
1854 | last_one = this_one; | |
1855 | } | |
1856 | ||
1857 | return result; | |
1858 | } | |
1859 | ||
a76d924d DJ |
1860 | void |
1861 | target_flash_erase (ULONGEST address, LONGEST length) | |
1862 | { | |
1863 | struct target_ops *t; | |
1864 | ||
1865 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1866 | if (t->to_flash_erase != NULL) | |
5d502164 MS |
1867 | { |
1868 | if (targetdebug) | |
1869 | fprintf_unfiltered (gdb_stdlog, "target_flash_erase (%s, %s)\n", | |
1870 | hex_string (address), phex (length, 0)); | |
1871 | t->to_flash_erase (t, address, length); | |
1872 | return; | |
1873 | } | |
a76d924d DJ |
1874 | |
1875 | tcomplain (); | |
1876 | } | |
1877 | ||
1878 | void | |
1879 | target_flash_done (void) | |
1880 | { | |
1881 | struct target_ops *t; | |
1882 | ||
1883 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1884 | if (t->to_flash_done != NULL) | |
5d502164 MS |
1885 | { |
1886 | if (targetdebug) | |
1887 | fprintf_unfiltered (gdb_stdlog, "target_flash_done\n"); | |
1888 | t->to_flash_done (t); | |
1889 | return; | |
1890 | } | |
a76d924d DJ |
1891 | |
1892 | tcomplain (); | |
1893 | } | |
1894 | ||
920d2a44 AC |
1895 | static void |
1896 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1897 | struct cmd_list_element *c, const char *value) | |
1898 | { | |
3e43a32a MS |
1899 | fprintf_filtered (file, |
1900 | _("Mode for reading from readonly sections is %s.\n"), | |
920d2a44 AC |
1901 | value); |
1902 | } | |
3a11626d | 1903 | |
1e3ff5ad AC |
1904 | /* More generic transfers. */ |
1905 | ||
0088c768 | 1906 | static LONGEST |
8aa91c1e | 1907 | default_xfer_partial (struct target_ops *ops, enum target_object object, |
2bc416ba | 1908 | const char *annex, gdb_byte *readbuf, |
1b0ba102 | 1909 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) |
0088c768 AC |
1910 | { |
1911 | if (object == TARGET_OBJECT_MEMORY | |
c8e73a31 AC |
1912 | && ops->deprecated_xfer_memory != NULL) |
1913 | /* If available, fall back to the target's | |
1914 | "deprecated_xfer_memory" method. */ | |
0088c768 | 1915 | { |
4b8a223f | 1916 | int xfered = -1; |
5d502164 | 1917 | |
0088c768 | 1918 | errno = 0; |
4b8a223f AC |
1919 | if (writebuf != NULL) |
1920 | { | |
1921 | void *buffer = xmalloc (len); | |
1922 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |
5d502164 | 1923 | |
4b8a223f | 1924 | memcpy (buffer, writebuf, len); |
c8e73a31 AC |
1925 | xfered = ops->deprecated_xfer_memory (offset, buffer, len, |
1926 | 1/*write*/, NULL, ops); | |
4b8a223f AC |
1927 | do_cleanups (cleanup); |
1928 | } | |
1929 | if (readbuf != NULL) | |
244e85c8 MS |
1930 | xfered = ops->deprecated_xfer_memory (offset, readbuf, len, |
1931 | 0/*read*/, NULL, ops); | |
0088c768 AC |
1932 | if (xfered > 0) |
1933 | return xfered; | |
1934 | else if (xfered == 0 && errno == 0) | |
c8e73a31 AC |
1935 | /* "deprecated_xfer_memory" uses 0, cross checked against |
1936 | ERRNO as one indication of an error. */ | |
0088c768 AC |
1937 | return 0; |
1938 | else | |
1939 | return -1; | |
1940 | } | |
1941 | else if (ops->beneath != NULL) | |
cf7a04e8 DJ |
1942 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, |
1943 | readbuf, writebuf, offset, len); | |
1944 | else | |
1945 | return -1; | |
1946 | } | |
1947 | ||
1948 | /* The xfer_partial handler for the topmost target. Unlike the default, | |
1949 | it does not need to handle memory specially; it just passes all | |
1950 | requests down the stack. */ | |
1951 | ||
1952 | static LONGEST | |
1953 | current_xfer_partial (struct target_ops *ops, enum target_object object, | |
1954 | const char *annex, gdb_byte *readbuf, | |
1955 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1956 | { | |
1957 | if (ops->beneath != NULL) | |
1958 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, | |
1959 | readbuf, writebuf, offset, len); | |
0088c768 AC |
1960 | else |
1961 | return -1; | |
1962 | } | |
1963 | ||
7f79c47e | 1964 | /* Target vector read/write partial wrapper functions. */ |
0088c768 | 1965 | |
13547ab6 | 1966 | static LONGEST |
1e3ff5ad AC |
1967 | target_read_partial (struct target_ops *ops, |
1968 | enum target_object object, | |
1b0ba102 | 1969 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1970 | ULONGEST offset, LONGEST len) |
1971 | { | |
27394598 | 1972 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len); |
1e3ff5ad AC |
1973 | } |
1974 | ||
13547ab6 | 1975 | static LONGEST |
1e3ff5ad AC |
1976 | target_write_partial (struct target_ops *ops, |
1977 | enum target_object object, | |
1b0ba102 | 1978 | const char *annex, const gdb_byte *buf, |
1e3ff5ad AC |
1979 | ULONGEST offset, LONGEST len) |
1980 | { | |
27394598 | 1981 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len); |
1e3ff5ad AC |
1982 | } |
1983 | ||
1984 | /* Wrappers to perform the full transfer. */ | |
7f79c47e DE |
1985 | |
1986 | /* For docs on target_read see target.h. */ | |
1987 | ||
1e3ff5ad AC |
1988 | LONGEST |
1989 | target_read (struct target_ops *ops, | |
1990 | enum target_object object, | |
1b0ba102 | 1991 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1992 | ULONGEST offset, LONGEST len) |
1993 | { | |
1994 | LONGEST xfered = 0; | |
5d502164 | 1995 | |
1e3ff5ad AC |
1996 | while (xfered < len) |
1997 | { | |
0088c768 | 1998 | LONGEST xfer = target_read_partial (ops, object, annex, |
fc1a4b47 | 1999 | (gdb_byte *) buf + xfered, |
0088c768 | 2000 | offset + xfered, len - xfered); |
5d502164 | 2001 | |
1e3ff5ad | 2002 | /* Call an observer, notifying them of the xfer progress? */ |
13547ab6 DJ |
2003 | if (xfer == 0) |
2004 | return xfered; | |
2005 | if (xfer < 0) | |
0088c768 | 2006 | return -1; |
1e3ff5ad AC |
2007 | xfered += xfer; |
2008 | QUIT; | |
2009 | } | |
2010 | return len; | |
2011 | } | |
2012 | ||
f1a507a1 JB |
2013 | /* Assuming that the entire [begin, end) range of memory cannot be |
2014 | read, try to read whatever subrange is possible to read. | |
2015 | ||
2016 | The function returns, in RESULT, either zero or one memory block. | |
2017 | If there's a readable subrange at the beginning, it is completely | |
2018 | read and returned. Any further readable subrange will not be read. | |
2019 | Otherwise, if there's a readable subrange at the end, it will be | |
2020 | completely read and returned. Any readable subranges before it | |
2021 | (obviously, not starting at the beginning), will be ignored. In | |
2022 | other cases -- either no readable subrange, or readable subrange(s) | |
2023 | that is neither at the beginning, or end, nothing is returned. | |
2024 | ||
2025 | The purpose of this function is to handle a read across a boundary | |
2026 | of accessible memory in a case when memory map is not available. | |
2027 | The above restrictions are fine for this case, but will give | |
2028 | incorrect results if the memory is 'patchy'. However, supporting | |
2029 | 'patchy' memory would require trying to read every single byte, | |
2030 | and it seems unacceptable solution. Explicit memory map is | |
2031 | recommended for this case -- and target_read_memory_robust will | |
2032 | take care of reading multiple ranges then. */ | |
8dedea02 VP |
2033 | |
2034 | static void | |
3e43a32a MS |
2035 | read_whatever_is_readable (struct target_ops *ops, |
2036 | ULONGEST begin, ULONGEST end, | |
8dedea02 | 2037 | VEC(memory_read_result_s) **result) |
d5086790 | 2038 | { |
f1a507a1 | 2039 | gdb_byte *buf = xmalloc (end - begin); |
8dedea02 VP |
2040 | ULONGEST current_begin = begin; |
2041 | ULONGEST current_end = end; | |
2042 | int forward; | |
2043 | memory_read_result_s r; | |
2044 | ||
2045 | /* If we previously failed to read 1 byte, nothing can be done here. */ | |
2046 | if (end - begin <= 1) | |
13b3fd9b MS |
2047 | { |
2048 | xfree (buf); | |
2049 | return; | |
2050 | } | |
8dedea02 VP |
2051 | |
2052 | /* Check that either first or the last byte is readable, and give up | |
c378eb4e | 2053 | if not. This heuristic is meant to permit reading accessible memory |
8dedea02 VP |
2054 | at the boundary of accessible region. */ |
2055 | if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
2056 | buf, begin, 1) == 1) | |
2057 | { | |
2058 | forward = 1; | |
2059 | ++current_begin; | |
2060 | } | |
2061 | else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
2062 | buf + (end-begin) - 1, end - 1, 1) == 1) | |
2063 | { | |
2064 | forward = 0; | |
2065 | --current_end; | |
2066 | } | |
2067 | else | |
2068 | { | |
13b3fd9b | 2069 | xfree (buf); |
8dedea02 VP |
2070 | return; |
2071 | } | |
2072 | ||
2073 | /* Loop invariant is that the [current_begin, current_end) was previously | |
2074 | found to be not readable as a whole. | |
2075 | ||
2076 | Note loop condition -- if the range has 1 byte, we can't divide the range | |
2077 | so there's no point trying further. */ | |
2078 | while (current_end - current_begin > 1) | |
2079 | { | |
2080 | ULONGEST first_half_begin, first_half_end; | |
2081 | ULONGEST second_half_begin, second_half_end; | |
2082 | LONGEST xfer; | |
8dedea02 | 2083 | ULONGEST middle = current_begin + (current_end - current_begin)/2; |
f1a507a1 | 2084 | |
8dedea02 VP |
2085 | if (forward) |
2086 | { | |
2087 | first_half_begin = current_begin; | |
2088 | first_half_end = middle; | |
2089 | second_half_begin = middle; | |
2090 | second_half_end = current_end; | |
2091 | } | |
2092 | else | |
2093 | { | |
2094 | first_half_begin = middle; | |
2095 | first_half_end = current_end; | |
2096 | second_half_begin = current_begin; | |
2097 | second_half_end = middle; | |
2098 | } | |
2099 | ||
2100 | xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2101 | buf + (first_half_begin - begin), | |
2102 | first_half_begin, | |
2103 | first_half_end - first_half_begin); | |
2104 | ||
2105 | if (xfer == first_half_end - first_half_begin) | |
2106 | { | |
c378eb4e | 2107 | /* This half reads up fine. So, the error must be in the |
3e43a32a | 2108 | other half. */ |
8dedea02 VP |
2109 | current_begin = second_half_begin; |
2110 | current_end = second_half_end; | |
2111 | } | |
2112 | else | |
2113 | { | |
c378eb4e MS |
2114 | /* This half is not readable. Because we've tried one byte, we |
2115 | know some part of this half if actually redable. Go to the next | |
8dedea02 VP |
2116 | iteration to divide again and try to read. |
2117 | ||
2118 | We don't handle the other half, because this function only tries | |
2119 | to read a single readable subrange. */ | |
2120 | current_begin = first_half_begin; | |
2121 | current_end = first_half_end; | |
2122 | } | |
2123 | } | |
2124 | ||
2125 | if (forward) | |
2126 | { | |
2127 | /* The [begin, current_begin) range has been read. */ | |
2128 | r.begin = begin; | |
2129 | r.end = current_begin; | |
2130 | r.data = buf; | |
2131 | } | |
2132 | else | |
2133 | { | |
2134 | /* The [current_end, end) range has been read. */ | |
2135 | LONGEST rlen = end - current_end; | |
f1a507a1 | 2136 | |
8dedea02 VP |
2137 | r.data = xmalloc (rlen); |
2138 | memcpy (r.data, buf + current_end - begin, rlen); | |
2139 | r.begin = current_end; | |
2140 | r.end = end; | |
2141 | xfree (buf); | |
2142 | } | |
2143 | VEC_safe_push(memory_read_result_s, (*result), &r); | |
2144 | } | |
2145 | ||
2146 | void | |
2147 | free_memory_read_result_vector (void *x) | |
2148 | { | |
2149 | VEC(memory_read_result_s) *v = x; | |
2150 | memory_read_result_s *current; | |
2151 | int ix; | |
2152 | ||
2153 | for (ix = 0; VEC_iterate (memory_read_result_s, v, ix, current); ++ix) | |
2154 | { | |
2155 | xfree (current->data); | |
2156 | } | |
2157 | VEC_free (memory_read_result_s, v); | |
2158 | } | |
2159 | ||
2160 | VEC(memory_read_result_s) * | |
2161 | read_memory_robust (struct target_ops *ops, ULONGEST offset, LONGEST len) | |
2162 | { | |
2163 | VEC(memory_read_result_s) *result = 0; | |
2164 | ||
2165 | LONGEST xfered = 0; | |
d5086790 VP |
2166 | while (xfered < len) |
2167 | { | |
8dedea02 VP |
2168 | struct mem_region *region = lookup_mem_region (offset + xfered); |
2169 | LONGEST rlen; | |
5d502164 | 2170 | |
8dedea02 VP |
2171 | /* If there is no explicit region, a fake one should be created. */ |
2172 | gdb_assert (region); | |
2173 | ||
2174 | if (region->hi == 0) | |
2175 | rlen = len - xfered; | |
2176 | else | |
2177 | rlen = region->hi - offset; | |
2178 | ||
2179 | if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO) | |
d5086790 | 2180 | { |
c378eb4e | 2181 | /* Cannot read this region. Note that we can end up here only |
8dedea02 VP |
2182 | if the region is explicitly marked inaccessible, or |
2183 | 'inaccessible-by-default' is in effect. */ | |
2184 | xfered += rlen; | |
2185 | } | |
2186 | else | |
2187 | { | |
2188 | LONGEST to_read = min (len - xfered, rlen); | |
2189 | gdb_byte *buffer = (gdb_byte *)xmalloc (to_read); | |
2190 | ||
2191 | LONGEST xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2192 | (gdb_byte *) buffer, | |
2193 | offset + xfered, to_read); | |
2194 | /* Call an observer, notifying them of the xfer progress? */ | |
d5086790 | 2195 | if (xfer <= 0) |
d5086790 | 2196 | { |
c378eb4e | 2197 | /* Got an error reading full chunk. See if maybe we can read |
8dedea02 VP |
2198 | some subrange. */ |
2199 | xfree (buffer); | |
3e43a32a MS |
2200 | read_whatever_is_readable (ops, offset + xfered, |
2201 | offset + xfered + to_read, &result); | |
8dedea02 | 2202 | xfered += to_read; |
d5086790 | 2203 | } |
8dedea02 VP |
2204 | else |
2205 | { | |
2206 | struct memory_read_result r; | |
2207 | r.data = buffer; | |
2208 | r.begin = offset + xfered; | |
2209 | r.end = r.begin + xfer; | |
2210 | VEC_safe_push (memory_read_result_s, result, &r); | |
2211 | xfered += xfer; | |
2212 | } | |
2213 | QUIT; | |
d5086790 | 2214 | } |
d5086790 | 2215 | } |
8dedea02 | 2216 | return result; |
d5086790 VP |
2217 | } |
2218 | ||
8dedea02 | 2219 | |
cf7a04e8 DJ |
2220 | /* An alternative to target_write with progress callbacks. */ |
2221 | ||
1e3ff5ad | 2222 | LONGEST |
cf7a04e8 DJ |
2223 | target_write_with_progress (struct target_ops *ops, |
2224 | enum target_object object, | |
2225 | const char *annex, const gdb_byte *buf, | |
2226 | ULONGEST offset, LONGEST len, | |
2227 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad AC |
2228 | { |
2229 | LONGEST xfered = 0; | |
a76d924d DJ |
2230 | |
2231 | /* Give the progress callback a chance to set up. */ | |
2232 | if (progress) | |
2233 | (*progress) (0, baton); | |
2234 | ||
1e3ff5ad AC |
2235 | while (xfered < len) |
2236 | { | |
2237 | LONGEST xfer = target_write_partial (ops, object, annex, | |
fc1a4b47 | 2238 | (gdb_byte *) buf + xfered, |
1e3ff5ad | 2239 | offset + xfered, len - xfered); |
cf7a04e8 | 2240 | |
13547ab6 DJ |
2241 | if (xfer == 0) |
2242 | return xfered; | |
2243 | if (xfer < 0) | |
0088c768 | 2244 | return -1; |
cf7a04e8 DJ |
2245 | |
2246 | if (progress) | |
2247 | (*progress) (xfer, baton); | |
2248 | ||
1e3ff5ad AC |
2249 | xfered += xfer; |
2250 | QUIT; | |
2251 | } | |
2252 | return len; | |
2253 | } | |
2254 | ||
7f79c47e DE |
2255 | /* For docs on target_write see target.h. */ |
2256 | ||
cf7a04e8 DJ |
2257 | LONGEST |
2258 | target_write (struct target_ops *ops, | |
2259 | enum target_object object, | |
2260 | const char *annex, const gdb_byte *buf, | |
2261 | ULONGEST offset, LONGEST len) | |
2262 | { | |
2263 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
2264 | NULL, NULL); | |
2265 | } | |
2266 | ||
159f81f3 DJ |
2267 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
2268 | the size of the transferred data. PADDING additional bytes are | |
2269 | available in *BUF_P. This is a helper function for | |
2270 | target_read_alloc; see the declaration of that function for more | |
2271 | information. */ | |
13547ab6 | 2272 | |
159f81f3 DJ |
2273 | static LONGEST |
2274 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, | |
2275 | const char *annex, gdb_byte **buf_p, int padding) | |
13547ab6 DJ |
2276 | { |
2277 | size_t buf_alloc, buf_pos; | |
2278 | gdb_byte *buf; | |
2279 | LONGEST n; | |
2280 | ||
2281 | /* This function does not have a length parameter; it reads the | |
2282 | entire OBJECT). Also, it doesn't support objects fetched partly | |
2283 | from one target and partly from another (in a different stratum, | |
2284 | e.g. a core file and an executable). Both reasons make it | |
2285 | unsuitable for reading memory. */ | |
2286 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
2287 | ||
2288 | /* Start by reading up to 4K at a time. The target will throttle | |
2289 | this number down if necessary. */ | |
2290 | buf_alloc = 4096; | |
2291 | buf = xmalloc (buf_alloc); | |
2292 | buf_pos = 0; | |
2293 | while (1) | |
2294 | { | |
2295 | n = target_read_partial (ops, object, annex, &buf[buf_pos], | |
159f81f3 | 2296 | buf_pos, buf_alloc - buf_pos - padding); |
13547ab6 DJ |
2297 | if (n < 0) |
2298 | { | |
2299 | /* An error occurred. */ | |
2300 | xfree (buf); | |
2301 | return -1; | |
2302 | } | |
2303 | else if (n == 0) | |
2304 | { | |
2305 | /* Read all there was. */ | |
2306 | if (buf_pos == 0) | |
2307 | xfree (buf); | |
2308 | else | |
2309 | *buf_p = buf; | |
2310 | return buf_pos; | |
2311 | } | |
2312 | ||
2313 | buf_pos += n; | |
2314 | ||
2315 | /* If the buffer is filling up, expand it. */ | |
2316 | if (buf_alloc < buf_pos * 2) | |
2317 | { | |
2318 | buf_alloc *= 2; | |
2319 | buf = xrealloc (buf, buf_alloc); | |
2320 | } | |
2321 | ||
2322 | QUIT; | |
2323 | } | |
2324 | } | |
2325 | ||
159f81f3 DJ |
2326 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
2327 | the size of the transferred data. See the declaration in "target.h" | |
2328 | function for more information about the return value. */ | |
2329 | ||
2330 | LONGEST | |
2331 | target_read_alloc (struct target_ops *ops, enum target_object object, | |
2332 | const char *annex, gdb_byte **buf_p) | |
2333 | { | |
2334 | return target_read_alloc_1 (ops, object, annex, buf_p, 0); | |
2335 | } | |
2336 | ||
2337 | /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and | |
2338 | returned as a string, allocated using xmalloc. If an error occurs | |
2339 | or the transfer is unsupported, NULL is returned. Empty objects | |
2340 | are returned as allocated but empty strings. A warning is issued | |
2341 | if the result contains any embedded NUL bytes. */ | |
2342 | ||
2343 | char * | |
2344 | target_read_stralloc (struct target_ops *ops, enum target_object object, | |
2345 | const char *annex) | |
2346 | { | |
2347 | gdb_byte *buffer; | |
2348 | LONGEST transferred; | |
2349 | ||
2350 | transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1); | |
2351 | ||
2352 | if (transferred < 0) | |
2353 | return NULL; | |
2354 | ||
2355 | if (transferred == 0) | |
2356 | return xstrdup (""); | |
2357 | ||
2358 | buffer[transferred] = 0; | |
2359 | if (strlen (buffer) < transferred) | |
2360 | warning (_("target object %d, annex %s, " | |
2361 | "contained unexpected null characters"), | |
2362 | (int) object, annex ? annex : "(none)"); | |
2363 | ||
2364 | return (char *) buffer; | |
2365 | } | |
2366 | ||
b6591e8b AC |
2367 | /* Memory transfer methods. */ |
2368 | ||
2369 | void | |
1b0ba102 | 2370 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
2371 | LONGEST len) |
2372 | { | |
07b82ea5 PA |
2373 | /* This method is used to read from an alternate, non-current |
2374 | target. This read must bypass the overlay support (as symbols | |
2375 | don't match this target), and GDB's internal cache (wrong cache | |
2376 | for this target). */ | |
2377 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) | |
b6591e8b AC |
2378 | != len) |
2379 | memory_error (EIO, addr); | |
2380 | } | |
2381 | ||
2382 | ULONGEST | |
5d502164 MS |
2383 | get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr, |
2384 | int len, enum bfd_endian byte_order) | |
b6591e8b | 2385 | { |
f6519ebc | 2386 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
2387 | |
2388 | gdb_assert (len <= sizeof (buf)); | |
2389 | get_target_memory (ops, addr, buf, len); | |
e17a4113 | 2390 | return extract_unsigned_integer (buf, len, byte_order); |
b6591e8b AC |
2391 | } |
2392 | ||
d914c394 SS |
2393 | int |
2394 | target_insert_breakpoint (struct gdbarch *gdbarch, | |
2395 | struct bp_target_info *bp_tgt) | |
2396 | { | |
2397 | if (!may_insert_breakpoints) | |
2398 | { | |
2399 | warning (_("May not insert breakpoints")); | |
2400 | return 1; | |
2401 | } | |
2402 | ||
2403 | return (*current_target.to_insert_breakpoint) (gdbarch, bp_tgt); | |
2404 | } | |
2405 | ||
2406 | int | |
2407 | target_remove_breakpoint (struct gdbarch *gdbarch, | |
2408 | struct bp_target_info *bp_tgt) | |
2409 | { | |
2410 | /* This is kind of a weird case to handle, but the permission might | |
2411 | have been changed after breakpoints were inserted - in which case | |
2412 | we should just take the user literally and assume that any | |
2413 | breakpoints should be left in place. */ | |
2414 | if (!may_insert_breakpoints) | |
2415 | { | |
2416 | warning (_("May not remove breakpoints")); | |
2417 | return 1; | |
2418 | } | |
2419 | ||
2420 | return (*current_target.to_remove_breakpoint) (gdbarch, bp_tgt); | |
2421 | } | |
2422 | ||
c906108c | 2423 | static void |
fba45db2 | 2424 | target_info (char *args, int from_tty) |
c906108c SS |
2425 | { |
2426 | struct target_ops *t; | |
c906108c | 2427 | int has_all_mem = 0; |
c5aa993b | 2428 | |
c906108c | 2429 | if (symfile_objfile != NULL) |
a3f17187 | 2430 | printf_unfiltered (_("Symbols from \"%s\".\n"), symfile_objfile->name); |
c906108c | 2431 | |
258b763a | 2432 | for (t = target_stack; t != NULL; t = t->beneath) |
c906108c | 2433 | { |
c35b1492 | 2434 | if (!(*t->to_has_memory) (t)) |
c906108c SS |
2435 | continue; |
2436 | ||
c5aa993b | 2437 | if ((int) (t->to_stratum) <= (int) dummy_stratum) |
c906108c SS |
2438 | continue; |
2439 | if (has_all_mem) | |
3e43a32a MS |
2440 | printf_unfiltered (_("\tWhile running this, " |
2441 | "GDB does not access memory from...\n")); | |
c5aa993b JM |
2442 | printf_unfiltered ("%s:\n", t->to_longname); |
2443 | (t->to_files_info) (t); | |
c35b1492 | 2444 | has_all_mem = (*t->to_has_all_memory) (t); |
c906108c SS |
2445 | } |
2446 | } | |
2447 | ||
fd79ecee DJ |
2448 | /* This function is called before any new inferior is created, e.g. |
2449 | by running a program, attaching, or connecting to a target. | |
2450 | It cleans up any state from previous invocations which might | |
2451 | change between runs. This is a subset of what target_preopen | |
2452 | resets (things which might change between targets). */ | |
2453 | ||
2454 | void | |
2455 | target_pre_inferior (int from_tty) | |
2456 | { | |
c378eb4e | 2457 | /* Clear out solib state. Otherwise the solib state of the previous |
b9db4ced | 2458 | inferior might have survived and is entirely wrong for the new |
c378eb4e | 2459 | target. This has been observed on GNU/Linux using glibc 2.3. How |
b9db4ced UW |
2460 | to reproduce: |
2461 | ||
2462 | bash$ ./foo& | |
2463 | [1] 4711 | |
2464 | bash$ ./foo& | |
2465 | [1] 4712 | |
2466 | bash$ gdb ./foo | |
2467 | [...] | |
2468 | (gdb) attach 4711 | |
2469 | (gdb) detach | |
2470 | (gdb) attach 4712 | |
2471 | Cannot access memory at address 0xdeadbeef | |
2472 | */ | |
b9db4ced | 2473 | |
50c71eaf PA |
2474 | /* In some OSs, the shared library list is the same/global/shared |
2475 | across inferiors. If code is shared between processes, so are | |
2476 | memory regions and features. */ | |
2477 | if (!gdbarch_has_global_solist (target_gdbarch)) | |
2478 | { | |
2479 | no_shared_libraries (NULL, from_tty); | |
2480 | ||
2481 | invalidate_target_mem_regions (); | |
424163ea | 2482 | |
50c71eaf PA |
2483 | target_clear_description (); |
2484 | } | |
fd79ecee DJ |
2485 | } |
2486 | ||
b8fa0bfa PA |
2487 | /* Callback for iterate_over_inferiors. Gets rid of the given |
2488 | inferior. */ | |
2489 | ||
2490 | static int | |
2491 | dispose_inferior (struct inferior *inf, void *args) | |
2492 | { | |
2493 | struct thread_info *thread; | |
2494 | ||
2495 | thread = any_thread_of_process (inf->pid); | |
2496 | if (thread) | |
2497 | { | |
2498 | switch_to_thread (thread->ptid); | |
2499 | ||
2500 | /* Core inferiors actually should be detached, not killed. */ | |
2501 | if (target_has_execution) | |
2502 | target_kill (); | |
2503 | else | |
2504 | target_detach (NULL, 0); | |
2505 | } | |
2506 | ||
2507 | return 0; | |
2508 | } | |
2509 | ||
c906108c SS |
2510 | /* This is to be called by the open routine before it does |
2511 | anything. */ | |
2512 | ||
2513 | void | |
fba45db2 | 2514 | target_preopen (int from_tty) |
c906108c | 2515 | { |
c5aa993b | 2516 | dont_repeat (); |
c906108c | 2517 | |
b8fa0bfa | 2518 | if (have_inferiors ()) |
c5aa993b | 2519 | { |
adf40b2e | 2520 | if (!from_tty |
b8fa0bfa PA |
2521 | || !have_live_inferiors () |
2522 | || query (_("A program is being debugged already. Kill it? "))) | |
2523 | iterate_over_inferiors (dispose_inferior, NULL); | |
c906108c | 2524 | else |
8a3fe4f8 | 2525 | error (_("Program not killed.")); |
c906108c SS |
2526 | } |
2527 | ||
2528 | /* Calling target_kill may remove the target from the stack. But if | |
2529 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
2530 | /* Leave the exec target, though. The user may be switching from a |
2531 | live process to a core of the same program. */ | |
2532 | pop_all_targets_above (file_stratum, 0); | |
fd79ecee DJ |
2533 | |
2534 | target_pre_inferior (from_tty); | |
c906108c SS |
2535 | } |
2536 | ||
2537 | /* Detach a target after doing deferred register stores. */ | |
2538 | ||
2539 | void | |
fba45db2 | 2540 | target_detach (char *args, int from_tty) |
c906108c | 2541 | { |
136d6dae VP |
2542 | struct target_ops* t; |
2543 | ||
2567c7d9 | 2544 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
2545 | /* Don't remove global breakpoints here. They're removed on |
2546 | disconnection from the target. */ | |
2547 | ; | |
2548 | else | |
2549 | /* If we're in breakpoints-always-inserted mode, have to remove | |
2550 | them before detaching. */ | |
6c95b8df | 2551 | remove_breakpoints_pid (PIDGET (inferior_ptid)); |
74960c60 | 2552 | |
24291992 PA |
2553 | prepare_for_detach (); |
2554 | ||
136d6dae VP |
2555 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2556 | { | |
2557 | if (t->to_detach != NULL) | |
2558 | { | |
2559 | t->to_detach (t, args, from_tty); | |
947b8855 PA |
2560 | if (targetdebug) |
2561 | fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n", | |
2562 | args, from_tty); | |
136d6dae VP |
2563 | return; |
2564 | } | |
2565 | } | |
2566 | ||
9b20d036 | 2567 | internal_error (__FILE__, __LINE__, _("could not find a target to detach")); |
c906108c SS |
2568 | } |
2569 | ||
6ad8ae5c DJ |
2570 | void |
2571 | target_disconnect (char *args, int from_tty) | |
2572 | { | |
597320e7 DJ |
2573 | struct target_ops *t; |
2574 | ||
50c71eaf PA |
2575 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
2576 | are global across processes, we have to remove them before | |
2577 | disconnecting. */ | |
74960c60 VP |
2578 | remove_breakpoints (); |
2579 | ||
597320e7 DJ |
2580 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2581 | if (t->to_disconnect != NULL) | |
2582 | { | |
2583 | if (targetdebug) | |
2584 | fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n", | |
2585 | args, from_tty); | |
2586 | t->to_disconnect (t, args, from_tty); | |
2587 | return; | |
2588 | } | |
2589 | ||
2590 | tcomplain (); | |
6ad8ae5c DJ |
2591 | } |
2592 | ||
117de6a9 | 2593 | ptid_t |
47608cb1 | 2594 | target_wait (ptid_t ptid, struct target_waitstatus *status, int options) |
117de6a9 PA |
2595 | { |
2596 | struct target_ops *t; | |
2597 | ||
2598 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2599 | { | |
2600 | if (t->to_wait != NULL) | |
2601 | { | |
47608cb1 | 2602 | ptid_t retval = (*t->to_wait) (t, ptid, status, options); |
117de6a9 PA |
2603 | |
2604 | if (targetdebug) | |
2605 | { | |
2606 | char *status_string; | |
2607 | ||
2608 | status_string = target_waitstatus_to_string (status); | |
2609 | fprintf_unfiltered (gdb_stdlog, | |
2610 | "target_wait (%d, status) = %d, %s\n", | |
2611 | PIDGET (ptid), PIDGET (retval), | |
2612 | status_string); | |
2613 | xfree (status_string); | |
2614 | } | |
2615 | ||
2616 | return retval; | |
2617 | } | |
2618 | } | |
2619 | ||
2620 | noprocess (); | |
2621 | } | |
2622 | ||
2623 | char * | |
2624 | target_pid_to_str (ptid_t ptid) | |
2625 | { | |
2626 | struct target_ops *t; | |
2627 | ||
2628 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2629 | { | |
2630 | if (t->to_pid_to_str != NULL) | |
2631 | return (*t->to_pid_to_str) (t, ptid); | |
2632 | } | |
2633 | ||
2634 | return normal_pid_to_str (ptid); | |
2635 | } | |
2636 | ||
4694da01 TT |
2637 | char * |
2638 | target_thread_name (struct thread_info *info) | |
2639 | { | |
2640 | struct target_ops *t; | |
2641 | ||
2642 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2643 | { | |
2644 | if (t->to_thread_name != NULL) | |
2645 | return (*t->to_thread_name) (info); | |
2646 | } | |
2647 | ||
2648 | return NULL; | |
2649 | } | |
2650 | ||
e1ac3328 VP |
2651 | void |
2652 | target_resume (ptid_t ptid, int step, enum target_signal signal) | |
2653 | { | |
28439f5e PA |
2654 | struct target_ops *t; |
2655 | ||
4e5d721f | 2656 | target_dcache_invalidate (); |
28439f5e PA |
2657 | |
2658 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2659 | { | |
2660 | if (t->to_resume != NULL) | |
2661 | { | |
2662 | t->to_resume (t, ptid, step, signal); | |
2663 | if (targetdebug) | |
2664 | fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n", | |
2665 | PIDGET (ptid), | |
2666 | step ? "step" : "continue", | |
2667 | target_signal_to_name (signal)); | |
2668 | ||
e66408ed | 2669 | registers_changed_ptid (ptid); |
28439f5e PA |
2670 | set_executing (ptid, 1); |
2671 | set_running (ptid, 1); | |
edb3359d | 2672 | clear_inline_frame_state (ptid); |
28439f5e PA |
2673 | return; |
2674 | } | |
2675 | } | |
2676 | ||
2677 | noprocess (); | |
e1ac3328 | 2678 | } |
2455069d UW |
2679 | |
2680 | void | |
2681 | target_pass_signals (int numsigs, unsigned char *pass_signals) | |
2682 | { | |
2683 | struct target_ops *t; | |
2684 | ||
2685 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2686 | { | |
2687 | if (t->to_pass_signals != NULL) | |
2688 | { | |
2689 | if (targetdebug) | |
2690 | { | |
2691 | int i; | |
2692 | ||
2693 | fprintf_unfiltered (gdb_stdlog, "target_pass_signals (%d, {", | |
2694 | numsigs); | |
2695 | ||
2696 | for (i = 0; i < numsigs; i++) | |
2697 | if (pass_signals[i]) | |
2698 | fprintf_unfiltered (gdb_stdlog, " %s", | |
2699 | target_signal_to_name (i)); | |
2700 | ||
2701 | fprintf_unfiltered (gdb_stdlog, " })\n"); | |
2702 | } | |
2703 | ||
2704 | (*t->to_pass_signals) (numsigs, pass_signals); | |
2705 | return; | |
2706 | } | |
2707 | } | |
2708 | } | |
2709 | ||
ee057212 DJ |
2710 | /* Look through the list of possible targets for a target that can |
2711 | follow forks. */ | |
2712 | ||
2713 | int | |
2714 | target_follow_fork (int follow_child) | |
2715 | { | |
2716 | struct target_ops *t; | |
2717 | ||
2718 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2719 | { | |
2720 | if (t->to_follow_fork != NULL) | |
2721 | { | |
2722 | int retval = t->to_follow_fork (t, follow_child); | |
5d502164 | 2723 | |
ee057212 DJ |
2724 | if (targetdebug) |
2725 | fprintf_unfiltered (gdb_stdlog, "target_follow_fork (%d) = %d\n", | |
2726 | follow_child, retval); | |
2727 | return retval; | |
2728 | } | |
2729 | } | |
2730 | ||
2731 | /* Some target returned a fork event, but did not know how to follow it. */ | |
2732 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 2733 | _("could not find a target to follow fork")); |
ee057212 DJ |
2734 | } |
2735 | ||
136d6dae VP |
2736 | void |
2737 | target_mourn_inferior (void) | |
2738 | { | |
2739 | struct target_ops *t; | |
5d502164 | 2740 | |
136d6dae VP |
2741 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2742 | { | |
2743 | if (t->to_mourn_inferior != NULL) | |
2744 | { | |
2745 | t->to_mourn_inferior (t); | |
947b8855 PA |
2746 | if (targetdebug) |
2747 | fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n"); | |
efbd6e75 JB |
2748 | |
2749 | /* We no longer need to keep handles on any of the object files. | |
2750 | Make sure to release them to avoid unnecessarily locking any | |
2751 | of them while we're not actually debugging. */ | |
2752 | bfd_cache_close_all (); | |
2753 | ||
136d6dae VP |
2754 | return; |
2755 | } | |
2756 | } | |
2757 | ||
2758 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 2759 | _("could not find a target to follow mourn inferior")); |
136d6dae VP |
2760 | } |
2761 | ||
424163ea DJ |
2762 | /* Look for a target which can describe architectural features, starting |
2763 | from TARGET. If we find one, return its description. */ | |
2764 | ||
2765 | const struct target_desc * | |
2766 | target_read_description (struct target_ops *target) | |
2767 | { | |
2768 | struct target_ops *t; | |
2769 | ||
2770 | for (t = target; t != NULL; t = t->beneath) | |
2771 | if (t->to_read_description != NULL) | |
2772 | { | |
2773 | const struct target_desc *tdesc; | |
2774 | ||
2775 | tdesc = t->to_read_description (t); | |
2776 | if (tdesc) | |
2777 | return tdesc; | |
2778 | } | |
2779 | ||
2780 | return NULL; | |
2781 | } | |
2782 | ||
08388c79 DE |
2783 | /* The default implementation of to_search_memory. |
2784 | This implements a basic search of memory, reading target memory and | |
2785 | performing the search here (as opposed to performing the search in on the | |
2786 | target side with, for example, gdbserver). */ | |
2787 | ||
2788 | int | |
2789 | simple_search_memory (struct target_ops *ops, | |
2790 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2791 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2792 | CORE_ADDR *found_addrp) | |
2793 | { | |
2794 | /* NOTE: also defined in find.c testcase. */ | |
2795 | #define SEARCH_CHUNK_SIZE 16000 | |
2796 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
2797 | /* Buffer to hold memory contents for searching. */ | |
2798 | gdb_byte *search_buf; | |
2799 | unsigned search_buf_size; | |
2800 | struct cleanup *old_cleanups; | |
2801 | ||
2802 | search_buf_size = chunk_size + pattern_len - 1; | |
2803 | ||
2804 | /* No point in trying to allocate a buffer larger than the search space. */ | |
2805 | if (search_space_len < search_buf_size) | |
2806 | search_buf_size = search_space_len; | |
2807 | ||
2808 | search_buf = malloc (search_buf_size); | |
2809 | if (search_buf == NULL) | |
5e1471f5 | 2810 | error (_("Unable to allocate memory to perform the search.")); |
08388c79 DE |
2811 | old_cleanups = make_cleanup (free_current_contents, &search_buf); |
2812 | ||
2813 | /* Prime the search buffer. */ | |
2814 | ||
2815 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2816 | search_buf, start_addr, search_buf_size) != search_buf_size) | |
2817 | { | |
5e1471f5 | 2818 | warning (_("Unable to access target memory at %s, halting search."), |
08388c79 DE |
2819 | hex_string (start_addr)); |
2820 | do_cleanups (old_cleanups); | |
2821 | return -1; | |
2822 | } | |
2823 | ||
2824 | /* Perform the search. | |
2825 | ||
2826 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
2827 | When we've scanned N bytes we copy the trailing bytes to the start and | |
2828 | read in another N bytes. */ | |
2829 | ||
2830 | while (search_space_len >= pattern_len) | |
2831 | { | |
2832 | gdb_byte *found_ptr; | |
2833 | unsigned nr_search_bytes = min (search_space_len, search_buf_size); | |
2834 | ||
2835 | found_ptr = memmem (search_buf, nr_search_bytes, | |
2836 | pattern, pattern_len); | |
2837 | ||
2838 | if (found_ptr != NULL) | |
2839 | { | |
2840 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
5d502164 | 2841 | |
08388c79 DE |
2842 | *found_addrp = found_addr; |
2843 | do_cleanups (old_cleanups); | |
2844 | return 1; | |
2845 | } | |
2846 | ||
2847 | /* Not found in this chunk, skip to next chunk. */ | |
2848 | ||
2849 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
2850 | if (search_space_len >= chunk_size) | |
2851 | search_space_len -= chunk_size; | |
2852 | else | |
2853 | search_space_len = 0; | |
2854 | ||
2855 | if (search_space_len >= pattern_len) | |
2856 | { | |
2857 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 2858 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
2859 | int nr_to_read; |
2860 | ||
2861 | /* Copy the trailing part of the previous iteration to the front | |
2862 | of the buffer for the next iteration. */ | |
2863 | gdb_assert (keep_len == pattern_len - 1); | |
2864 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
2865 | ||
2866 | nr_to_read = min (search_space_len - keep_len, chunk_size); | |
2867 | ||
2868 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2869 | search_buf + keep_len, read_addr, | |
2870 | nr_to_read) != nr_to_read) | |
2871 | { | |
9b20d036 MS |
2872 | warning (_("Unable to access target " |
2873 | "memory at %s, halting search."), | |
08388c79 DE |
2874 | hex_string (read_addr)); |
2875 | do_cleanups (old_cleanups); | |
2876 | return -1; | |
2877 | } | |
2878 | ||
2879 | start_addr += chunk_size; | |
2880 | } | |
2881 | } | |
2882 | ||
2883 | /* Not found. */ | |
2884 | ||
2885 | do_cleanups (old_cleanups); | |
2886 | return 0; | |
2887 | } | |
2888 | ||
2889 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the | |
2890 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2891 | ||
2892 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2893 | requiring halting of the search (e.g. memory read error). | |
2894 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2895 | ||
2896 | int | |
2897 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2898 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2899 | CORE_ADDR *found_addrp) | |
2900 | { | |
2901 | struct target_ops *t; | |
2902 | int found; | |
2903 | ||
2904 | /* We don't use INHERIT to set current_target.to_search_memory, | |
2905 | so we have to scan the target stack and handle targetdebug | |
2906 | ourselves. */ | |
2907 | ||
2908 | if (targetdebug) | |
2909 | fprintf_unfiltered (gdb_stdlog, "target_search_memory (%s, ...)\n", | |
2910 | hex_string (start_addr)); | |
2911 | ||
2912 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2913 | if (t->to_search_memory != NULL) | |
2914 | break; | |
2915 | ||
2916 | if (t != NULL) | |
2917 | { | |
2918 | found = t->to_search_memory (t, start_addr, search_space_len, | |
2919 | pattern, pattern_len, found_addrp); | |
2920 | } | |
2921 | else | |
2922 | { | |
2923 | /* If a special version of to_search_memory isn't available, use the | |
2924 | simple version. */ | |
c35b1492 | 2925 | found = simple_search_memory (current_target.beneath, |
08388c79 DE |
2926 | start_addr, search_space_len, |
2927 | pattern, pattern_len, found_addrp); | |
2928 | } | |
2929 | ||
2930 | if (targetdebug) | |
2931 | fprintf_unfiltered (gdb_stdlog, " = %d\n", found); | |
2932 | ||
2933 | return found; | |
2934 | } | |
2935 | ||
8edfe269 DJ |
2936 | /* Look through the currently pushed targets. If none of them will |
2937 | be able to restart the currently running process, issue an error | |
2938 | message. */ | |
2939 | ||
2940 | void | |
2941 | target_require_runnable (void) | |
2942 | { | |
2943 | struct target_ops *t; | |
2944 | ||
2945 | for (t = target_stack; t != NULL; t = t->beneath) | |
2946 | { | |
2947 | /* If this target knows how to create a new program, then | |
2948 | assume we will still be able to after killing the current | |
2949 | one. Either killing and mourning will not pop T, or else | |
2950 | find_default_run_target will find it again. */ | |
2951 | if (t->to_create_inferior != NULL) | |
2952 | return; | |
2953 | ||
2954 | /* Do not worry about thread_stratum targets that can not | |
2955 | create inferiors. Assume they will be pushed again if | |
2956 | necessary, and continue to the process_stratum. */ | |
85e747d2 UW |
2957 | if (t->to_stratum == thread_stratum |
2958 | || t->to_stratum == arch_stratum) | |
8edfe269 DJ |
2959 | continue; |
2960 | ||
3e43a32a MS |
2961 | error (_("The \"%s\" target does not support \"run\". " |
2962 | "Try \"help target\" or \"continue\"."), | |
8edfe269 DJ |
2963 | t->to_shortname); |
2964 | } | |
2965 | ||
2966 | /* This function is only called if the target is running. In that | |
2967 | case there should have been a process_stratum target and it | |
c378eb4e | 2968 | should either know how to create inferiors, or not... */ |
9b20d036 | 2969 | internal_error (__FILE__, __LINE__, _("No targets found")); |
8edfe269 DJ |
2970 | } |
2971 | ||
c906108c SS |
2972 | /* Look through the list of possible targets for a target that can |
2973 | execute a run or attach command without any other data. This is | |
2974 | used to locate the default process stratum. | |
2975 | ||
5f667f2d PA |
2976 | If DO_MESG is not NULL, the result is always valid (error() is |
2977 | called for errors); else, return NULL on error. */ | |
c906108c SS |
2978 | |
2979 | static struct target_ops * | |
fba45db2 | 2980 | find_default_run_target (char *do_mesg) |
c906108c SS |
2981 | { |
2982 | struct target_ops **t; | |
2983 | struct target_ops *runable = NULL; | |
2984 | int count; | |
2985 | ||
2986 | count = 0; | |
2987 | ||
2988 | for (t = target_structs; t < target_structs + target_struct_size; | |
2989 | ++t) | |
2990 | { | |
c5aa993b | 2991 | if ((*t)->to_can_run && target_can_run (*t)) |
c906108c SS |
2992 | { |
2993 | runable = *t; | |
2994 | ++count; | |
2995 | } | |
2996 | } | |
2997 | ||
2998 | if (count != 1) | |
5f667f2d PA |
2999 | { |
3000 | if (do_mesg) | |
3001 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
3002 | else | |
3003 | return NULL; | |
3004 | } | |
c906108c SS |
3005 | |
3006 | return runable; | |
3007 | } | |
3008 | ||
3009 | void | |
136d6dae | 3010 | find_default_attach (struct target_ops *ops, char *args, int from_tty) |
c906108c SS |
3011 | { |
3012 | struct target_ops *t; | |
3013 | ||
c5aa993b | 3014 | t = find_default_run_target ("attach"); |
136d6dae | 3015 | (t->to_attach) (t, args, from_tty); |
c906108c SS |
3016 | return; |
3017 | } | |
3018 | ||
c906108c | 3019 | void |
136d6dae VP |
3020 | find_default_create_inferior (struct target_ops *ops, |
3021 | char *exec_file, char *allargs, char **env, | |
c27cda74 | 3022 | int from_tty) |
c906108c SS |
3023 | { |
3024 | struct target_ops *t; | |
3025 | ||
c5aa993b | 3026 | t = find_default_run_target ("run"); |
136d6dae | 3027 | (t->to_create_inferior) (t, exec_file, allargs, env, from_tty); |
c906108c SS |
3028 | return; |
3029 | } | |
3030 | ||
2c0b251b | 3031 | static int |
b84876c2 PA |
3032 | find_default_can_async_p (void) |
3033 | { | |
3034 | struct target_ops *t; | |
3035 | ||
5f667f2d PA |
3036 | /* This may be called before the target is pushed on the stack; |
3037 | look for the default process stratum. If there's none, gdb isn't | |
3038 | configured with a native debugger, and target remote isn't | |
3039 | connected yet. */ | |
3040 | t = find_default_run_target (NULL); | |
3041 | if (t && t->to_can_async_p) | |
b84876c2 PA |
3042 | return (t->to_can_async_p) (); |
3043 | return 0; | |
3044 | } | |
3045 | ||
2c0b251b | 3046 | static int |
b84876c2 PA |
3047 | find_default_is_async_p (void) |
3048 | { | |
3049 | struct target_ops *t; | |
3050 | ||
5f667f2d PA |
3051 | /* This may be called before the target is pushed on the stack; |
3052 | look for the default process stratum. If there's none, gdb isn't | |
3053 | configured with a native debugger, and target remote isn't | |
3054 | connected yet. */ | |
3055 | t = find_default_run_target (NULL); | |
3056 | if (t && t->to_is_async_p) | |
b84876c2 PA |
3057 | return (t->to_is_async_p) (); |
3058 | return 0; | |
3059 | } | |
3060 | ||
2c0b251b | 3061 | static int |
9908b566 VP |
3062 | find_default_supports_non_stop (void) |
3063 | { | |
3064 | struct target_ops *t; | |
3065 | ||
3066 | t = find_default_run_target (NULL); | |
3067 | if (t && t->to_supports_non_stop) | |
3068 | return (t->to_supports_non_stop) (); | |
3069 | return 0; | |
3070 | } | |
3071 | ||
3072 | int | |
2c0b251b | 3073 | target_supports_non_stop (void) |
9908b566 VP |
3074 | { |
3075 | struct target_ops *t; | |
5d502164 | 3076 | |
9908b566 VP |
3077 | for (t = ¤t_target; t != NULL; t = t->beneath) |
3078 | if (t->to_supports_non_stop) | |
3079 | return t->to_supports_non_stop (); | |
3080 | ||
3081 | return 0; | |
3082 | } | |
3083 | ||
03583c20 UW |
3084 | static int |
3085 | find_default_supports_disable_randomization (void) | |
3086 | { | |
3087 | struct target_ops *t; | |
3088 | ||
3089 | t = find_default_run_target (NULL); | |
3090 | if (t && t->to_supports_disable_randomization) | |
3091 | return (t->to_supports_disable_randomization) (); | |
3092 | return 0; | |
3093 | } | |
3094 | ||
3095 | int | |
3096 | target_supports_disable_randomization (void) | |
3097 | { | |
3098 | struct target_ops *t; | |
3099 | ||
3100 | for (t = ¤t_target; t != NULL; t = t->beneath) | |
3101 | if (t->to_supports_disable_randomization) | |
3102 | return t->to_supports_disable_randomization (); | |
3103 | ||
3104 | return 0; | |
3105 | } | |
9908b566 | 3106 | |
07e059b5 VP |
3107 | char * |
3108 | target_get_osdata (const char *type) | |
3109 | { | |
07e059b5 VP |
3110 | struct target_ops *t; |
3111 | ||
739ef7fb PA |
3112 | /* If we're already connected to something that can get us OS |
3113 | related data, use it. Otherwise, try using the native | |
3114 | target. */ | |
3115 | if (current_target.to_stratum >= process_stratum) | |
6d097e65 | 3116 | t = current_target.beneath; |
739ef7fb PA |
3117 | else |
3118 | t = find_default_run_target ("get OS data"); | |
07e059b5 VP |
3119 | |
3120 | if (!t) | |
3121 | return NULL; | |
3122 | ||
6d097e65 | 3123 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
3124 | } |
3125 | ||
6c95b8df PA |
3126 | /* Determine the current address space of thread PTID. */ |
3127 | ||
3128 | struct address_space * | |
3129 | target_thread_address_space (ptid_t ptid) | |
3130 | { | |
c0694254 | 3131 | struct address_space *aspace; |
6c95b8df | 3132 | struct inferior *inf; |
c0694254 PA |
3133 | struct target_ops *t; |
3134 | ||
3135 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3136 | { | |
3137 | if (t->to_thread_address_space != NULL) | |
3138 | { | |
3139 | aspace = t->to_thread_address_space (t, ptid); | |
3140 | gdb_assert (aspace); | |
6c95b8df | 3141 | |
c0694254 PA |
3142 | if (targetdebug) |
3143 | fprintf_unfiltered (gdb_stdlog, | |
3144 | "target_thread_address_space (%s) = %d\n", | |
3145 | target_pid_to_str (ptid), | |
3146 | address_space_num (aspace)); | |
3147 | return aspace; | |
3148 | } | |
3149 | } | |
6c95b8df PA |
3150 | |
3151 | /* Fall-back to the "main" address space of the inferior. */ | |
3152 | inf = find_inferior_pid (ptid_get_pid (ptid)); | |
3153 | ||
3154 | if (inf == NULL || inf->aspace == NULL) | |
3e43a32a | 3155 | internal_error (__FILE__, __LINE__, |
9b20d036 MS |
3156 | _("Can't determine the current " |
3157 | "address space of thread %s\n"), | |
6c95b8df PA |
3158 | target_pid_to_str (ptid)); |
3159 | ||
3160 | return inf->aspace; | |
3161 | } | |
3162 | ||
e0d24f8d WZ |
3163 | static int |
3164 | default_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
3165 | { | |
ffe5a37e | 3166 | return (len <= gdbarch_ptr_bit (target_gdbarch) / TARGET_CHAR_BIT); |
ccaa32c7 GS |
3167 | } |
3168 | ||
5009afc5 AS |
3169 | static int |
3170 | default_watchpoint_addr_within_range (struct target_ops *target, | |
3171 | CORE_ADDR addr, | |
3172 | CORE_ADDR start, int length) | |
3173 | { | |
3174 | return addr >= start && addr < start + length; | |
3175 | } | |
3176 | ||
c2250ad1 UW |
3177 | static struct gdbarch * |
3178 | default_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
3179 | { | |
3180 | return target_gdbarch; | |
3181 | } | |
3182 | ||
c906108c | 3183 | static int |
fba45db2 | 3184 | return_zero (void) |
c906108c SS |
3185 | { |
3186 | return 0; | |
3187 | } | |
3188 | ||
3189 | static int | |
fba45db2 | 3190 | return_one (void) |
c906108c SS |
3191 | { |
3192 | return 1; | |
3193 | } | |
3194 | ||
ccaa32c7 GS |
3195 | static int |
3196 | return_minus_one (void) | |
3197 | { | |
3198 | return -1; | |
3199 | } | |
3200 | ||
7a292a7a SS |
3201 | /* Find a single runnable target in the stack and return it. If for |
3202 | some reason there is more than one, return NULL. */ | |
3203 | ||
3204 | struct target_ops * | |
fba45db2 | 3205 | find_run_target (void) |
7a292a7a SS |
3206 | { |
3207 | struct target_ops **t; | |
3208 | struct target_ops *runable = NULL; | |
3209 | int count; | |
c5aa993b | 3210 | |
7a292a7a | 3211 | count = 0; |
c5aa993b | 3212 | |
7a292a7a SS |
3213 | for (t = target_structs; t < target_structs + target_struct_size; ++t) |
3214 | { | |
c5aa993b | 3215 | if ((*t)->to_can_run && target_can_run (*t)) |
7a292a7a SS |
3216 | { |
3217 | runable = *t; | |
3218 | ++count; | |
3219 | } | |
3220 | } | |
c5aa993b | 3221 | |
7a292a7a SS |
3222 | return (count == 1 ? runable : NULL); |
3223 | } | |
3224 | ||
ed9a39eb JM |
3225 | /* |
3226 | * Find the next target down the stack from the specified target. | |
3227 | */ | |
3228 | ||
3229 | struct target_ops * | |
fba45db2 | 3230 | find_target_beneath (struct target_ops *t) |
ed9a39eb | 3231 | { |
258b763a | 3232 | return t->beneath; |
ed9a39eb JM |
3233 | } |
3234 | ||
c906108c SS |
3235 | \f |
3236 | /* The inferior process has died. Long live the inferior! */ | |
3237 | ||
3238 | void | |
fba45db2 | 3239 | generic_mourn_inferior (void) |
c906108c | 3240 | { |
7f9f62ba | 3241 | ptid_t ptid; |
c906108c | 3242 | |
7f9f62ba | 3243 | ptid = inferior_ptid; |
39f77062 | 3244 | inferior_ptid = null_ptid; |
7f9f62ba PA |
3245 | |
3246 | if (!ptid_equal (ptid, null_ptid)) | |
3247 | { | |
3248 | int pid = ptid_get_pid (ptid); | |
6c95b8df | 3249 | exit_inferior (pid); |
7f9f62ba PA |
3250 | } |
3251 | ||
c906108c SS |
3252 | breakpoint_init_inferior (inf_exited); |
3253 | registers_changed (); | |
3254 | ||
c906108c SS |
3255 | reopen_exec_file (); |
3256 | reinit_frame_cache (); | |
3257 | ||
9a4105ab AC |
3258 | if (deprecated_detach_hook) |
3259 | deprecated_detach_hook (); | |
c906108c SS |
3260 | } |
3261 | \f | |
8807d78b | 3262 | /* Helper function for child_wait and the derivatives of child_wait. |
c906108c SS |
3263 | HOSTSTATUS is the waitstatus from wait() or the equivalent; store our |
3264 | translation of that in OURSTATUS. */ | |
3265 | void | |
fba45db2 | 3266 | store_waitstatus (struct target_waitstatus *ourstatus, int hoststatus) |
c906108c | 3267 | { |
c906108c SS |
3268 | if (WIFEXITED (hoststatus)) |
3269 | { | |
3270 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
3271 | ourstatus->value.integer = WEXITSTATUS (hoststatus); | |
3272 | } | |
3273 | else if (!WIFSTOPPED (hoststatus)) | |
3274 | { | |
3275 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
3276 | ourstatus->value.sig = target_signal_from_host (WTERMSIG (hoststatus)); | |
3277 | } | |
3278 | else | |
3279 | { | |
3280 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
3281 | ourstatus->value.sig = target_signal_from_host (WSTOPSIG (hoststatus)); | |
3282 | } | |
3283 | } | |
3284 | \f | |
fd0a2a6f MK |
3285 | /* Convert a normal process ID to a string. Returns the string in a |
3286 | static buffer. */ | |
c906108c SS |
3287 | |
3288 | char * | |
39f77062 | 3289 | normal_pid_to_str (ptid_t ptid) |
c906108c | 3290 | { |
fd0a2a6f | 3291 | static char buf[32]; |
c906108c | 3292 | |
5fff8fc0 | 3293 | xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid)); |
c906108c SS |
3294 | return buf; |
3295 | } | |
3296 | ||
2c0b251b | 3297 | static char * |
117de6a9 PA |
3298 | dummy_pid_to_str (struct target_ops *ops, ptid_t ptid) |
3299 | { | |
3300 | return normal_pid_to_str (ptid); | |
3301 | } | |
3302 | ||
9b4eba8e HZ |
3303 | /* Error-catcher for target_find_memory_regions. */ |
3304 | static int | |
b8edc417 | 3305 | dummy_find_memory_regions (find_memory_region_ftype ignore1, void *ignore2) |
be4d1333 | 3306 | { |
9b4eba8e | 3307 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3308 | return 0; |
3309 | } | |
3310 | ||
9b4eba8e HZ |
3311 | /* Error-catcher for target_make_corefile_notes. */ |
3312 | static char * | |
3313 | dummy_make_corefile_notes (bfd *ignore1, int *ignore2) | |
be4d1333 | 3314 | { |
9b4eba8e | 3315 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3316 | return NULL; |
3317 | } | |
3318 | ||
6b04bdb7 MS |
3319 | /* Error-catcher for target_get_bookmark. */ |
3320 | static gdb_byte * | |
3321 | dummy_get_bookmark (char *ignore1, int ignore2) | |
3322 | { | |
3323 | tcomplain (); | |
3324 | return NULL; | |
3325 | } | |
3326 | ||
3327 | /* Error-catcher for target_goto_bookmark. */ | |
3328 | static void | |
3329 | dummy_goto_bookmark (gdb_byte *ignore, int from_tty) | |
3330 | { | |
3331 | tcomplain (); | |
3332 | } | |
3333 | ||
c906108c SS |
3334 | /* Set up the handful of non-empty slots needed by the dummy target |
3335 | vector. */ | |
3336 | ||
3337 | static void | |
fba45db2 | 3338 | init_dummy_target (void) |
c906108c SS |
3339 | { |
3340 | dummy_target.to_shortname = "None"; | |
3341 | dummy_target.to_longname = "None"; | |
3342 | dummy_target.to_doc = ""; | |
3343 | dummy_target.to_attach = find_default_attach; | |
136d6dae VP |
3344 | dummy_target.to_detach = |
3345 | (void (*)(struct target_ops *, char *, int))target_ignore; | |
c906108c | 3346 | dummy_target.to_create_inferior = find_default_create_inferior; |
b84876c2 PA |
3347 | dummy_target.to_can_async_p = find_default_can_async_p; |
3348 | dummy_target.to_is_async_p = find_default_is_async_p; | |
9908b566 | 3349 | dummy_target.to_supports_non_stop = find_default_supports_non_stop; |
03583c20 UW |
3350 | dummy_target.to_supports_disable_randomization |
3351 | = find_default_supports_disable_randomization; | |
117de6a9 | 3352 | dummy_target.to_pid_to_str = dummy_pid_to_str; |
c906108c | 3353 | dummy_target.to_stratum = dummy_stratum; |
be4d1333 MS |
3354 | dummy_target.to_find_memory_regions = dummy_find_memory_regions; |
3355 | dummy_target.to_make_corefile_notes = dummy_make_corefile_notes; | |
6b04bdb7 MS |
3356 | dummy_target.to_get_bookmark = dummy_get_bookmark; |
3357 | dummy_target.to_goto_bookmark = dummy_goto_bookmark; | |
0b603eba | 3358 | dummy_target.to_xfer_partial = default_xfer_partial; |
c35b1492 PA |
3359 | dummy_target.to_has_all_memory = (int (*) (struct target_ops *)) return_zero; |
3360 | dummy_target.to_has_memory = (int (*) (struct target_ops *)) return_zero; | |
3361 | dummy_target.to_has_stack = (int (*) (struct target_ops *)) return_zero; | |
3362 | dummy_target.to_has_registers = (int (*) (struct target_ops *)) return_zero; | |
aeaec162 TT |
3363 | dummy_target.to_has_execution |
3364 | = (int (*) (struct target_ops *, ptid_t)) return_zero; | |
7155de5a HZ |
3365 | dummy_target.to_stopped_by_watchpoint = return_zero; |
3366 | dummy_target.to_stopped_data_address = | |
3367 | (int (*) (struct target_ops *, CORE_ADDR *)) return_zero; | |
c906108c SS |
3368 | dummy_target.to_magic = OPS_MAGIC; |
3369 | } | |
c906108c | 3370 | \f |
c906108c | 3371 | static void |
fba45db2 | 3372 | debug_to_open (char *args, int from_tty) |
c906108c SS |
3373 | { |
3374 | debug_target.to_open (args, from_tty); | |
3375 | ||
96baa820 | 3376 | fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty); |
c906108c SS |
3377 | } |
3378 | ||
f1c07ab0 AC |
3379 | void |
3380 | target_close (struct target_ops *targ, int quitting) | |
3381 | { | |
3382 | if (targ->to_xclose != NULL) | |
3383 | targ->to_xclose (targ, quitting); | |
3384 | else if (targ->to_close != NULL) | |
3385 | targ->to_close (quitting); | |
947b8855 PA |
3386 | |
3387 | if (targetdebug) | |
3388 | fprintf_unfiltered (gdb_stdlog, "target_close (%d)\n", quitting); | |
f1c07ab0 AC |
3389 | } |
3390 | ||
136d6dae VP |
3391 | void |
3392 | target_attach (char *args, int from_tty) | |
3393 | { | |
3394 | struct target_ops *t; | |
5d502164 | 3395 | |
136d6dae VP |
3396 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3397 | { | |
3398 | if (t->to_attach != NULL) | |
3399 | { | |
3400 | t->to_attach (t, args, from_tty); | |
947b8855 PA |
3401 | if (targetdebug) |
3402 | fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n", | |
3403 | args, from_tty); | |
136d6dae VP |
3404 | return; |
3405 | } | |
3406 | } | |
3407 | ||
3408 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 3409 | _("could not find a target to attach")); |
136d6dae VP |
3410 | } |
3411 | ||
28439f5e PA |
3412 | int |
3413 | target_thread_alive (ptid_t ptid) | |
c906108c | 3414 | { |
28439f5e | 3415 | struct target_ops *t; |
5d502164 | 3416 | |
28439f5e PA |
3417 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3418 | { | |
3419 | if (t->to_thread_alive != NULL) | |
3420 | { | |
3421 | int retval; | |
c906108c | 3422 | |
28439f5e PA |
3423 | retval = t->to_thread_alive (t, ptid); |
3424 | if (targetdebug) | |
3425 | fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n", | |
3426 | PIDGET (ptid), retval); | |
3427 | ||
3428 | return retval; | |
3429 | } | |
3430 | } | |
3431 | ||
3432 | return 0; | |
3433 | } | |
3434 | ||
3435 | void | |
3436 | target_find_new_threads (void) | |
3437 | { | |
3438 | struct target_ops *t; | |
5d502164 | 3439 | |
28439f5e PA |
3440 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3441 | { | |
3442 | if (t->to_find_new_threads != NULL) | |
3443 | { | |
3444 | t->to_find_new_threads (t); | |
3445 | if (targetdebug) | |
3446 | fprintf_unfiltered (gdb_stdlog, "target_find_new_threads ()\n"); | |
3447 | ||
3448 | return; | |
3449 | } | |
3450 | } | |
c906108c SS |
3451 | } |
3452 | ||
d914c394 SS |
3453 | void |
3454 | target_stop (ptid_t ptid) | |
3455 | { | |
3456 | if (!may_stop) | |
3457 | { | |
3458 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3459 | return; | |
3460 | } | |
3461 | ||
3462 | (*current_target.to_stop) (ptid); | |
3463 | } | |
3464 | ||
c906108c | 3465 | static void |
28439f5e | 3466 | debug_to_post_attach (int pid) |
c906108c | 3467 | { |
28439f5e | 3468 | debug_target.to_post_attach (pid); |
c906108c | 3469 | |
28439f5e | 3470 | fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid); |
c906108c SS |
3471 | } |
3472 | ||
f00150c9 DE |
3473 | /* Return a pretty printed form of target_waitstatus. |
3474 | Space for the result is malloc'd, caller must free. */ | |
c906108c | 3475 | |
f00150c9 DE |
3476 | char * |
3477 | target_waitstatus_to_string (const struct target_waitstatus *ws) | |
3478 | { | |
3479 | const char *kind_str = "status->kind = "; | |
c906108c | 3480 | |
f00150c9 | 3481 | switch (ws->kind) |
c906108c SS |
3482 | { |
3483 | case TARGET_WAITKIND_EXITED: | |
f00150c9 DE |
3484 | return xstrprintf ("%sexited, status = %d", |
3485 | kind_str, ws->value.integer); | |
c906108c | 3486 | case TARGET_WAITKIND_STOPPED: |
f00150c9 DE |
3487 | return xstrprintf ("%sstopped, signal = %s", |
3488 | kind_str, target_signal_to_name (ws->value.sig)); | |
c906108c | 3489 | case TARGET_WAITKIND_SIGNALLED: |
f00150c9 DE |
3490 | return xstrprintf ("%ssignalled, signal = %s", |
3491 | kind_str, target_signal_to_name (ws->value.sig)); | |
c906108c | 3492 | case TARGET_WAITKIND_LOADED: |
f00150c9 | 3493 | return xstrprintf ("%sloaded", kind_str); |
c906108c | 3494 | case TARGET_WAITKIND_FORKED: |
f00150c9 | 3495 | return xstrprintf ("%sforked", kind_str); |
c906108c | 3496 | case TARGET_WAITKIND_VFORKED: |
f00150c9 | 3497 | return xstrprintf ("%svforked", kind_str); |
c906108c | 3498 | case TARGET_WAITKIND_EXECD: |
f00150c9 DE |
3499 | return xstrprintf ("%sexecd", kind_str); |
3500 | case TARGET_WAITKIND_SYSCALL_ENTRY: | |
a96d9b2e | 3501 | return xstrprintf ("%sentered syscall", kind_str); |
f00150c9 | 3502 | case TARGET_WAITKIND_SYSCALL_RETURN: |
a96d9b2e | 3503 | return xstrprintf ("%sexited syscall", kind_str); |
c906108c | 3504 | case TARGET_WAITKIND_SPURIOUS: |
f00150c9 DE |
3505 | return xstrprintf ("%sspurious", kind_str); |
3506 | case TARGET_WAITKIND_IGNORE: | |
3507 | return xstrprintf ("%signore", kind_str); | |
3508 | case TARGET_WAITKIND_NO_HISTORY: | |
3509 | return xstrprintf ("%sno-history", kind_str); | |
0c94aa73 PA |
3510 | case TARGET_WAITKIND_NO_RESUMED: |
3511 | return xstrprintf ("%sno-resumed", kind_str); | |
c906108c | 3512 | default: |
f00150c9 | 3513 | return xstrprintf ("%sunknown???", kind_str); |
c906108c | 3514 | } |
f00150c9 DE |
3515 | } |
3516 | ||
bf0c5130 | 3517 | static void |
56be3814 UW |
3518 | debug_print_register (const char * func, |
3519 | struct regcache *regcache, int regno) | |
bf0c5130 | 3520 | { |
f8d29908 | 3521 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
5d502164 | 3522 | |
bf0c5130 | 3523 | fprintf_unfiltered (gdb_stdlog, "%s ", func); |
f8d29908 | 3524 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) |
f8d29908 UW |
3525 | && gdbarch_register_name (gdbarch, regno) != NULL |
3526 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') | |
3527 | fprintf_unfiltered (gdb_stdlog, "(%s)", | |
3528 | gdbarch_register_name (gdbarch, regno)); | |
bf0c5130 AC |
3529 | else |
3530 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
0ff58721 | 3531 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) |
bf0c5130 | 3532 | { |
e17a4113 | 3533 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
f8d29908 | 3534 | int i, size = register_size (gdbarch, regno); |
d9d9c31f | 3535 | unsigned char buf[MAX_REGISTER_SIZE]; |
5d502164 | 3536 | |
0ff58721 | 3537 | regcache_raw_collect (regcache, regno, buf); |
bf0c5130 | 3538 | fprintf_unfiltered (gdb_stdlog, " = "); |
81c4a259 | 3539 | for (i = 0; i < size; i++) |
bf0c5130 AC |
3540 | { |
3541 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
3542 | } | |
81c4a259 | 3543 | if (size <= sizeof (LONGEST)) |
bf0c5130 | 3544 | { |
e17a4113 | 3545 | ULONGEST val = extract_unsigned_integer (buf, size, byte_order); |
5d502164 | 3546 | |
0b1553bc UW |
3547 | fprintf_unfiltered (gdb_stdlog, " %s %s", |
3548 | core_addr_to_string_nz (val), plongest (val)); | |
bf0c5130 AC |
3549 | } |
3550 | } | |
3551 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
3552 | } | |
3553 | ||
28439f5e PA |
3554 | void |
3555 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 3556 | { |
28439f5e | 3557 | struct target_ops *t; |
5d502164 | 3558 | |
28439f5e PA |
3559 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3560 | { | |
3561 | if (t->to_fetch_registers != NULL) | |
3562 | { | |
3563 | t->to_fetch_registers (t, regcache, regno); | |
3564 | if (targetdebug) | |
3565 | debug_print_register ("target_fetch_registers", regcache, regno); | |
3566 | return; | |
3567 | } | |
3568 | } | |
c906108c SS |
3569 | } |
3570 | ||
28439f5e PA |
3571 | void |
3572 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 3573 | { |
28439f5e | 3574 | struct target_ops *t; |
5d502164 | 3575 | |
d914c394 SS |
3576 | if (!may_write_registers) |
3577 | error (_("Writing to registers is not allowed (regno %d)"), regno); | |
3578 | ||
28439f5e PA |
3579 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3580 | { | |
3581 | if (t->to_store_registers != NULL) | |
3582 | { | |
3583 | t->to_store_registers (t, regcache, regno); | |
3584 | if (targetdebug) | |
3585 | { | |
3586 | debug_print_register ("target_store_registers", regcache, regno); | |
3587 | } | |
3588 | return; | |
3589 | } | |
3590 | } | |
3591 | ||
3592 | noprocess (); | |
c906108c SS |
3593 | } |
3594 | ||
dc146f7c VP |
3595 | int |
3596 | target_core_of_thread (ptid_t ptid) | |
3597 | { | |
3598 | struct target_ops *t; | |
3599 | ||
3600 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3601 | { | |
3602 | if (t->to_core_of_thread != NULL) | |
3603 | { | |
3604 | int retval = t->to_core_of_thread (t, ptid); | |
5d502164 | 3605 | |
dc146f7c | 3606 | if (targetdebug) |
3e43a32a MS |
3607 | fprintf_unfiltered (gdb_stdlog, |
3608 | "target_core_of_thread (%d) = %d\n", | |
dc146f7c VP |
3609 | PIDGET (ptid), retval); |
3610 | return retval; | |
3611 | } | |
3612 | } | |
3613 | ||
3614 | return -1; | |
3615 | } | |
3616 | ||
4a5e7a5b PA |
3617 | int |
3618 | target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3619 | { | |
3620 | struct target_ops *t; | |
3621 | ||
3622 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3623 | { | |
3624 | if (t->to_verify_memory != NULL) | |
3625 | { | |
3626 | int retval = t->to_verify_memory (t, data, memaddr, size); | |
5d502164 | 3627 | |
4a5e7a5b | 3628 | if (targetdebug) |
3e43a32a MS |
3629 | fprintf_unfiltered (gdb_stdlog, |
3630 | "target_verify_memory (%s, %s) = %d\n", | |
4a5e7a5b PA |
3631 | paddress (target_gdbarch, memaddr), |
3632 | pulongest (size), | |
3633 | retval); | |
3634 | return retval; | |
3635 | } | |
3636 | } | |
3637 | ||
3638 | tcomplain (); | |
3639 | } | |
3640 | ||
9c06b0b4 TJB |
3641 | /* The documentation for this function is in its prototype declaration in |
3642 | target.h. */ | |
3643 | ||
3644 | int | |
3645 | target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
3646 | { | |
3647 | struct target_ops *t; | |
3648 | ||
3649 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3650 | if (t->to_insert_mask_watchpoint != NULL) | |
3651 | { | |
3652 | int ret; | |
3653 | ||
3654 | ret = t->to_insert_mask_watchpoint (t, addr, mask, rw); | |
3655 | ||
3656 | if (targetdebug) | |
3657 | fprintf_unfiltered (gdb_stdlog, "\ | |
3658 | target_insert_mask_watchpoint (%s, %s, %d) = %d\n", | |
3659 | core_addr_to_string (addr), | |
3660 | core_addr_to_string (mask), rw, ret); | |
3661 | ||
3662 | return ret; | |
3663 | } | |
3664 | ||
3665 | return 1; | |
3666 | } | |
3667 | ||
3668 | /* The documentation for this function is in its prototype declaration in | |
3669 | target.h. */ | |
3670 | ||
3671 | int | |
3672 | target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
3673 | { | |
3674 | struct target_ops *t; | |
3675 | ||
3676 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3677 | if (t->to_remove_mask_watchpoint != NULL) | |
3678 | { | |
3679 | int ret; | |
3680 | ||
3681 | ret = t->to_remove_mask_watchpoint (t, addr, mask, rw); | |
3682 | ||
3683 | if (targetdebug) | |
3684 | fprintf_unfiltered (gdb_stdlog, "\ | |
3685 | target_remove_mask_watchpoint (%s, %s, %d) = %d\n", | |
3686 | core_addr_to_string (addr), | |
3687 | core_addr_to_string (mask), rw, ret); | |
3688 | ||
3689 | return ret; | |
3690 | } | |
3691 | ||
3692 | return 1; | |
3693 | } | |
3694 | ||
3695 | /* The documentation for this function is in its prototype declaration | |
3696 | in target.h. */ | |
3697 | ||
3698 | int | |
3699 | target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask) | |
3700 | { | |
3701 | struct target_ops *t; | |
3702 | ||
3703 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3704 | if (t->to_masked_watch_num_registers != NULL) | |
3705 | return t->to_masked_watch_num_registers (t, addr, mask); | |
3706 | ||
3707 | return -1; | |
3708 | } | |
3709 | ||
f1310107 TJB |
3710 | /* The documentation for this function is in its prototype declaration |
3711 | in target.h. */ | |
3712 | ||
3713 | int | |
3714 | target_ranged_break_num_registers (void) | |
3715 | { | |
3716 | struct target_ops *t; | |
3717 | ||
3718 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3719 | if (t->to_ranged_break_num_registers != NULL) | |
3720 | return t->to_ranged_break_num_registers (t); | |
3721 | ||
3722 | return -1; | |
3723 | } | |
3724 | ||
c906108c | 3725 | static void |
316f2060 | 3726 | debug_to_prepare_to_store (struct regcache *regcache) |
c906108c | 3727 | { |
316f2060 | 3728 | debug_target.to_prepare_to_store (regcache); |
c906108c | 3729 | |
96baa820 | 3730 | fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n"); |
c906108c SS |
3731 | } |
3732 | ||
3733 | static int | |
961cb7b5 | 3734 | deprecated_debug_xfer_memory (CORE_ADDR memaddr, bfd_byte *myaddr, int len, |
c8e73a31 AC |
3735 | int write, struct mem_attrib *attrib, |
3736 | struct target_ops *target) | |
c906108c SS |
3737 | { |
3738 | int retval; | |
3739 | ||
c8e73a31 AC |
3740 | retval = debug_target.deprecated_xfer_memory (memaddr, myaddr, len, write, |
3741 | attrib, target); | |
c906108c | 3742 | |
96baa820 | 3743 | fprintf_unfiltered (gdb_stdlog, |
53b71562 | 3744 | "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d", |
5af949e3 UW |
3745 | paddress (target_gdbarch, memaddr), len, |
3746 | write ? "write" : "read", retval); | |
c906108c | 3747 | |
c906108c SS |
3748 | if (retval > 0) |
3749 | { | |
3750 | int i; | |
3751 | ||
96baa820 | 3752 | fputs_unfiltered (", bytes =", gdb_stdlog); |
c906108c SS |
3753 | for (i = 0; i < retval; i++) |
3754 | { | |
53b71562 | 3755 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
333dabeb DJ |
3756 | { |
3757 | if (targetdebug < 2 && i > 0) | |
3758 | { | |
3759 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
3760 | break; | |
3761 | } | |
3762 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
3763 | } | |
2bc416ba | 3764 | |
96baa820 | 3765 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
c906108c SS |
3766 | } |
3767 | } | |
3768 | ||
96baa820 | 3769 | fputc_unfiltered ('\n', gdb_stdlog); |
c906108c SS |
3770 | |
3771 | return retval; | |
3772 | } | |
3773 | ||
3774 | static void | |
fba45db2 | 3775 | debug_to_files_info (struct target_ops *target) |
c906108c SS |
3776 | { |
3777 | debug_target.to_files_info (target); | |
3778 | ||
96baa820 | 3779 | fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n"); |
c906108c SS |
3780 | } |
3781 | ||
3782 | static int | |
a6d9a66e UW |
3783 | debug_to_insert_breakpoint (struct gdbarch *gdbarch, |
3784 | struct bp_target_info *bp_tgt) | |
c906108c SS |
3785 | { |
3786 | int retval; | |
3787 | ||
a6d9a66e | 3788 | retval = debug_target.to_insert_breakpoint (gdbarch, bp_tgt); |
c906108c | 3789 | |
96baa820 | 3790 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
3791 | "target_insert_breakpoint (%s, xxx) = %ld\n", |
3792 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 3793 | (unsigned long) retval); |
c906108c SS |
3794 | return retval; |
3795 | } | |
3796 | ||
3797 | static int | |
a6d9a66e UW |
3798 | debug_to_remove_breakpoint (struct gdbarch *gdbarch, |
3799 | struct bp_target_info *bp_tgt) | |
c906108c SS |
3800 | { |
3801 | int retval; | |
3802 | ||
a6d9a66e | 3803 | retval = debug_target.to_remove_breakpoint (gdbarch, bp_tgt); |
c906108c | 3804 | |
96baa820 | 3805 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
3806 | "target_remove_breakpoint (%s, xxx) = %ld\n", |
3807 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 3808 | (unsigned long) retval); |
c906108c SS |
3809 | return retval; |
3810 | } | |
3811 | ||
ccaa32c7 GS |
3812 | static int |
3813 | debug_to_can_use_hw_breakpoint (int type, int cnt, int from_tty) | |
3814 | { | |
3815 | int retval; | |
3816 | ||
3817 | retval = debug_target.to_can_use_hw_breakpoint (type, cnt, from_tty); | |
3818 | ||
3819 | fprintf_unfiltered (gdb_stdlog, | |
3820 | "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n", | |
3821 | (unsigned long) type, | |
3822 | (unsigned long) cnt, | |
3823 | (unsigned long) from_tty, | |
3824 | (unsigned long) retval); | |
3825 | return retval; | |
3826 | } | |
3827 | ||
e0d24f8d WZ |
3828 | static int |
3829 | debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
3830 | { | |
3831 | CORE_ADDR retval; | |
3832 | ||
3833 | retval = debug_target.to_region_ok_for_hw_watchpoint (addr, len); | |
3834 | ||
3835 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3836 | "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n", |
3837 | core_addr_to_string (addr), (unsigned long) len, | |
3838 | core_addr_to_string (retval)); | |
e0d24f8d WZ |
3839 | return retval; |
3840 | } | |
3841 | ||
0cf6dd15 TJB |
3842 | static int |
3843 | debug_to_can_accel_watchpoint_condition (CORE_ADDR addr, int len, int rw, | |
3844 | struct expression *cond) | |
3845 | { | |
3846 | int retval; | |
3847 | ||
3e43a32a MS |
3848 | retval = debug_target.to_can_accel_watchpoint_condition (addr, len, |
3849 | rw, cond); | |
0cf6dd15 TJB |
3850 | |
3851 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
3852 | "target_can_accel_watchpoint_condition " |
3853 | "(%s, %d, %d, %s) = %ld\n", | |
bd91e7ae OS |
3854 | core_addr_to_string (addr), len, rw, |
3855 | host_address_to_string (cond), (unsigned long) retval); | |
0cf6dd15 TJB |
3856 | return retval; |
3857 | } | |
3858 | ||
ccaa32c7 GS |
3859 | static int |
3860 | debug_to_stopped_by_watchpoint (void) | |
3861 | { | |
3862 | int retval; | |
3863 | ||
3864 | retval = debug_target.to_stopped_by_watchpoint (); | |
3865 | ||
3866 | fprintf_unfiltered (gdb_stdlog, | |
d92524f1 | 3867 | "target_stopped_by_watchpoint () = %ld\n", |
ccaa32c7 GS |
3868 | (unsigned long) retval); |
3869 | return retval; | |
3870 | } | |
3871 | ||
4aa7a7f5 JJ |
3872 | static int |
3873 | debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr) | |
ccaa32c7 | 3874 | { |
4aa7a7f5 | 3875 | int retval; |
ccaa32c7 | 3876 | |
4aa7a7f5 | 3877 | retval = debug_target.to_stopped_data_address (target, addr); |
ccaa32c7 GS |
3878 | |
3879 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3880 | "target_stopped_data_address ([%s]) = %ld\n", |
3881 | core_addr_to_string (*addr), | |
4aa7a7f5 | 3882 | (unsigned long)retval); |
ccaa32c7 GS |
3883 | return retval; |
3884 | } | |
3885 | ||
5009afc5 AS |
3886 | static int |
3887 | debug_to_watchpoint_addr_within_range (struct target_ops *target, | |
3888 | CORE_ADDR addr, | |
3889 | CORE_ADDR start, int length) | |
3890 | { | |
3891 | int retval; | |
3892 | ||
3893 | retval = debug_target.to_watchpoint_addr_within_range (target, addr, | |
3894 | start, length); | |
3895 | ||
3896 | fprintf_filtered (gdb_stdlog, | |
bd91e7ae OS |
3897 | "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n", |
3898 | core_addr_to_string (addr), core_addr_to_string (start), | |
3899 | length, retval); | |
5009afc5 AS |
3900 | return retval; |
3901 | } | |
3902 | ||
ccaa32c7 | 3903 | static int |
a6d9a66e UW |
3904 | debug_to_insert_hw_breakpoint (struct gdbarch *gdbarch, |
3905 | struct bp_target_info *bp_tgt) | |
ccaa32c7 GS |
3906 | { |
3907 | int retval; | |
3908 | ||
a6d9a66e | 3909 | retval = debug_target.to_insert_hw_breakpoint (gdbarch, bp_tgt); |
ccaa32c7 GS |
3910 | |
3911 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3912 | "target_insert_hw_breakpoint (%s, xxx) = %ld\n", |
3913 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
3914 | (unsigned long) retval); |
3915 | return retval; | |
3916 | } | |
3917 | ||
3918 | static int | |
a6d9a66e UW |
3919 | debug_to_remove_hw_breakpoint (struct gdbarch *gdbarch, |
3920 | struct bp_target_info *bp_tgt) | |
ccaa32c7 GS |
3921 | { |
3922 | int retval; | |
3923 | ||
a6d9a66e | 3924 | retval = debug_target.to_remove_hw_breakpoint (gdbarch, bp_tgt); |
ccaa32c7 GS |
3925 | |
3926 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3927 | "target_remove_hw_breakpoint (%s, xxx) = %ld\n", |
3928 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
3929 | (unsigned long) retval); |
3930 | return retval; | |
3931 | } | |
3932 | ||
3933 | static int | |
0cf6dd15 TJB |
3934 | debug_to_insert_watchpoint (CORE_ADDR addr, int len, int type, |
3935 | struct expression *cond) | |
ccaa32c7 GS |
3936 | { |
3937 | int retval; | |
3938 | ||
0cf6dd15 | 3939 | retval = debug_target.to_insert_watchpoint (addr, len, type, cond); |
ccaa32c7 GS |
3940 | |
3941 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3942 | "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n", |
3943 | core_addr_to_string (addr), len, type, | |
3944 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
3945 | return retval; |
3946 | } | |
3947 | ||
3948 | static int | |
0cf6dd15 TJB |
3949 | debug_to_remove_watchpoint (CORE_ADDR addr, int len, int type, |
3950 | struct expression *cond) | |
ccaa32c7 GS |
3951 | { |
3952 | int retval; | |
3953 | ||
0cf6dd15 | 3954 | retval = debug_target.to_remove_watchpoint (addr, len, type, cond); |
ccaa32c7 GS |
3955 | |
3956 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3957 | "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n", |
3958 | core_addr_to_string (addr), len, type, | |
3959 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
3960 | return retval; |
3961 | } | |
3962 | ||
c906108c | 3963 | static void |
fba45db2 | 3964 | debug_to_terminal_init (void) |
c906108c SS |
3965 | { |
3966 | debug_target.to_terminal_init (); | |
3967 | ||
96baa820 | 3968 | fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n"); |
c906108c SS |
3969 | } |
3970 | ||
3971 | static void | |
fba45db2 | 3972 | debug_to_terminal_inferior (void) |
c906108c SS |
3973 | { |
3974 | debug_target.to_terminal_inferior (); | |
3975 | ||
96baa820 | 3976 | fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n"); |
c906108c SS |
3977 | } |
3978 | ||
3979 | static void | |
fba45db2 | 3980 | debug_to_terminal_ours_for_output (void) |
c906108c SS |
3981 | { |
3982 | debug_target.to_terminal_ours_for_output (); | |
3983 | ||
96baa820 | 3984 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n"); |
c906108c SS |
3985 | } |
3986 | ||
3987 | static void | |
fba45db2 | 3988 | debug_to_terminal_ours (void) |
c906108c SS |
3989 | { |
3990 | debug_target.to_terminal_ours (); | |
3991 | ||
96baa820 | 3992 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n"); |
c906108c SS |
3993 | } |
3994 | ||
a790ad35 SC |
3995 | static void |
3996 | debug_to_terminal_save_ours (void) | |
3997 | { | |
3998 | debug_target.to_terminal_save_ours (); | |
3999 | ||
4000 | fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n"); | |
4001 | } | |
4002 | ||
c906108c | 4003 | static void |
fba45db2 | 4004 | debug_to_terminal_info (char *arg, int from_tty) |
c906108c SS |
4005 | { |
4006 | debug_target.to_terminal_info (arg, from_tty); | |
4007 | ||
96baa820 | 4008 | fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg, |
c906108c SS |
4009 | from_tty); |
4010 | } | |
4011 | ||
c906108c | 4012 | static void |
fba45db2 | 4013 | debug_to_load (char *args, int from_tty) |
c906108c SS |
4014 | { |
4015 | debug_target.to_load (args, from_tty); | |
4016 | ||
96baa820 | 4017 | fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty); |
c906108c SS |
4018 | } |
4019 | ||
c906108c | 4020 | static void |
39f77062 | 4021 | debug_to_post_startup_inferior (ptid_t ptid) |
c906108c | 4022 | { |
39f77062 | 4023 | debug_target.to_post_startup_inferior (ptid); |
c906108c | 4024 | |
96baa820 | 4025 | fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n", |
39f77062 | 4026 | PIDGET (ptid)); |
c906108c SS |
4027 | } |
4028 | ||
77b06cd7 | 4029 | static int |
fba45db2 | 4030 | debug_to_insert_fork_catchpoint (int pid) |
c906108c | 4031 | { |
77b06cd7 TJB |
4032 | int retval; |
4033 | ||
4034 | retval = debug_target.to_insert_fork_catchpoint (pid); | |
4035 | ||
4036 | fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d) = %d\n", | |
4037 | pid, retval); | |
c906108c | 4038 | |
77b06cd7 | 4039 | return retval; |
c906108c SS |
4040 | } |
4041 | ||
4042 | static int | |
fba45db2 | 4043 | debug_to_remove_fork_catchpoint (int pid) |
c906108c | 4044 | { |
c5aa993b | 4045 | int retval; |
c906108c SS |
4046 | |
4047 | retval = debug_target.to_remove_fork_catchpoint (pid); | |
4048 | ||
96baa820 | 4049 | fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n", |
c5aa993b | 4050 | pid, retval); |
c906108c SS |
4051 | |
4052 | return retval; | |
4053 | } | |
4054 | ||
77b06cd7 | 4055 | static int |
fba45db2 | 4056 | debug_to_insert_vfork_catchpoint (int pid) |
c906108c | 4057 | { |
77b06cd7 TJB |
4058 | int retval; |
4059 | ||
4060 | retval = debug_target.to_insert_vfork_catchpoint (pid); | |
c906108c | 4061 | |
77b06cd7 TJB |
4062 | fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d) = %d\n", |
4063 | pid, retval); | |
4064 | ||
4065 | return retval; | |
c906108c SS |
4066 | } |
4067 | ||
4068 | static int | |
fba45db2 | 4069 | debug_to_remove_vfork_catchpoint (int pid) |
c906108c | 4070 | { |
c5aa993b | 4071 | int retval; |
c906108c SS |
4072 | |
4073 | retval = debug_target.to_remove_vfork_catchpoint (pid); | |
4074 | ||
96baa820 | 4075 | fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n", |
c5aa993b | 4076 | pid, retval); |
c906108c SS |
4077 | |
4078 | return retval; | |
4079 | } | |
4080 | ||
77b06cd7 | 4081 | static int |
fba45db2 | 4082 | debug_to_insert_exec_catchpoint (int pid) |
c906108c | 4083 | { |
77b06cd7 TJB |
4084 | int retval; |
4085 | ||
4086 | retval = debug_target.to_insert_exec_catchpoint (pid); | |
c906108c | 4087 | |
77b06cd7 TJB |
4088 | fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d) = %d\n", |
4089 | pid, retval); | |
4090 | ||
4091 | return retval; | |
c906108c SS |
4092 | } |
4093 | ||
4094 | static int | |
fba45db2 | 4095 | debug_to_remove_exec_catchpoint (int pid) |
c906108c | 4096 | { |
c5aa993b | 4097 | int retval; |
c906108c SS |
4098 | |
4099 | retval = debug_target.to_remove_exec_catchpoint (pid); | |
4100 | ||
96baa820 | 4101 | fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n", |
c5aa993b | 4102 | pid, retval); |
c906108c SS |
4103 | |
4104 | return retval; | |
4105 | } | |
4106 | ||
c906108c | 4107 | static int |
fba45db2 | 4108 | debug_to_has_exited (int pid, int wait_status, int *exit_status) |
c906108c | 4109 | { |
c5aa993b | 4110 | int has_exited; |
c906108c SS |
4111 | |
4112 | has_exited = debug_target.to_has_exited (pid, wait_status, exit_status); | |
4113 | ||
96baa820 | 4114 | fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n", |
c5aa993b | 4115 | pid, wait_status, *exit_status, has_exited); |
c906108c SS |
4116 | |
4117 | return has_exited; | |
4118 | } | |
4119 | ||
c906108c | 4120 | static int |
fba45db2 | 4121 | debug_to_can_run (void) |
c906108c SS |
4122 | { |
4123 | int retval; | |
4124 | ||
4125 | retval = debug_target.to_can_run (); | |
4126 | ||
96baa820 | 4127 | fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval); |
c906108c SS |
4128 | |
4129 | return retval; | |
4130 | } | |
4131 | ||
c2250ad1 UW |
4132 | static struct gdbarch * |
4133 | debug_to_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
4134 | { | |
4135 | struct gdbarch *retval; | |
4136 | ||
4137 | retval = debug_target.to_thread_architecture (ops, ptid); | |
4138 | ||
3e43a32a MS |
4139 | fprintf_unfiltered (gdb_stdlog, |
4140 | "target_thread_architecture (%s) = %s [%s]\n", | |
4141 | target_pid_to_str (ptid), | |
4142 | host_address_to_string (retval), | |
c2250ad1 UW |
4143 | gdbarch_bfd_arch_info (retval)->printable_name); |
4144 | return retval; | |
4145 | } | |
4146 | ||
c906108c | 4147 | static void |
94cc34af | 4148 | debug_to_stop (ptid_t ptid) |
c906108c | 4149 | { |
94cc34af | 4150 | debug_target.to_stop (ptid); |
c906108c | 4151 | |
94cc34af PA |
4152 | fprintf_unfiltered (gdb_stdlog, "target_stop (%s)\n", |
4153 | target_pid_to_str (ptid)); | |
c906108c SS |
4154 | } |
4155 | ||
96baa820 JM |
4156 | static void |
4157 | debug_to_rcmd (char *command, | |
d9fcf2fb | 4158 | struct ui_file *outbuf) |
96baa820 JM |
4159 | { |
4160 | debug_target.to_rcmd (command, outbuf); | |
4161 | fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command); | |
4162 | } | |
4163 | ||
c906108c | 4164 | static char * |
fba45db2 | 4165 | debug_to_pid_to_exec_file (int pid) |
c906108c | 4166 | { |
c5aa993b | 4167 | char *exec_file; |
c906108c SS |
4168 | |
4169 | exec_file = debug_target.to_pid_to_exec_file (pid); | |
4170 | ||
96baa820 | 4171 | fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n", |
c5aa993b | 4172 | pid, exec_file); |
c906108c SS |
4173 | |
4174 | return exec_file; | |
4175 | } | |
4176 | ||
c906108c | 4177 | static void |
fba45db2 | 4178 | setup_target_debug (void) |
c906108c SS |
4179 | { |
4180 | memcpy (&debug_target, ¤t_target, sizeof debug_target); | |
4181 | ||
4182 | current_target.to_open = debug_to_open; | |
c906108c | 4183 | current_target.to_post_attach = debug_to_post_attach; |
c906108c | 4184 | current_target.to_prepare_to_store = debug_to_prepare_to_store; |
c8e73a31 | 4185 | current_target.deprecated_xfer_memory = deprecated_debug_xfer_memory; |
c906108c SS |
4186 | current_target.to_files_info = debug_to_files_info; |
4187 | current_target.to_insert_breakpoint = debug_to_insert_breakpoint; | |
4188 | current_target.to_remove_breakpoint = debug_to_remove_breakpoint; | |
ccaa32c7 GS |
4189 | current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint; |
4190 | current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint; | |
4191 | current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint; | |
4192 | current_target.to_insert_watchpoint = debug_to_insert_watchpoint; | |
4193 | current_target.to_remove_watchpoint = debug_to_remove_watchpoint; | |
4194 | current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint; | |
4195 | current_target.to_stopped_data_address = debug_to_stopped_data_address; | |
3e43a32a MS |
4196 | current_target.to_watchpoint_addr_within_range |
4197 | = debug_to_watchpoint_addr_within_range; | |
4198 | current_target.to_region_ok_for_hw_watchpoint | |
4199 | = debug_to_region_ok_for_hw_watchpoint; | |
4200 | current_target.to_can_accel_watchpoint_condition | |
4201 | = debug_to_can_accel_watchpoint_condition; | |
c906108c SS |
4202 | current_target.to_terminal_init = debug_to_terminal_init; |
4203 | current_target.to_terminal_inferior = debug_to_terminal_inferior; | |
3e43a32a MS |
4204 | current_target.to_terminal_ours_for_output |
4205 | = debug_to_terminal_ours_for_output; | |
c906108c | 4206 | current_target.to_terminal_ours = debug_to_terminal_ours; |
a790ad35 | 4207 | current_target.to_terminal_save_ours = debug_to_terminal_save_ours; |
c906108c | 4208 | current_target.to_terminal_info = debug_to_terminal_info; |
c906108c | 4209 | current_target.to_load = debug_to_load; |
c906108c | 4210 | current_target.to_post_startup_inferior = debug_to_post_startup_inferior; |
c906108c SS |
4211 | current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint; |
4212 | current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint; | |
4213 | current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint; | |
4214 | current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint; | |
c906108c SS |
4215 | current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint; |
4216 | current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint; | |
c906108c | 4217 | current_target.to_has_exited = debug_to_has_exited; |
c906108c | 4218 | current_target.to_can_run = debug_to_can_run; |
c906108c | 4219 | current_target.to_stop = debug_to_stop; |
96baa820 | 4220 | current_target.to_rcmd = debug_to_rcmd; |
c906108c | 4221 | current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file; |
c2250ad1 | 4222 | current_target.to_thread_architecture = debug_to_thread_architecture; |
c906108c | 4223 | } |
c906108c | 4224 | \f |
c5aa993b JM |
4225 | |
4226 | static char targ_desc[] = | |
3e43a32a MS |
4227 | "Names of targets and files being debugged.\nShows the entire \ |
4228 | stack of targets currently in use (including the exec-file,\n\ | |
c906108c SS |
4229 | core-file, and process, if any), as well as the symbol file name."; |
4230 | ||
96baa820 JM |
4231 | static void |
4232 | do_monitor_command (char *cmd, | |
4233 | int from_tty) | |
4234 | { | |
2b5fe715 AC |
4235 | if ((current_target.to_rcmd |
4236 | == (void (*) (char *, struct ui_file *)) tcomplain) | |
96baa820 | 4237 | || (current_target.to_rcmd == debug_to_rcmd |
2b5fe715 AC |
4238 | && (debug_target.to_rcmd |
4239 | == (void (*) (char *, struct ui_file *)) tcomplain))) | |
8a3fe4f8 | 4240 | error (_("\"monitor\" command not supported by this target.")); |
96baa820 JM |
4241 | target_rcmd (cmd, gdb_stdtarg); |
4242 | } | |
4243 | ||
87680a14 JB |
4244 | /* Print the name of each layers of our target stack. */ |
4245 | ||
4246 | static void | |
4247 | maintenance_print_target_stack (char *cmd, int from_tty) | |
4248 | { | |
4249 | struct target_ops *t; | |
4250 | ||
4251 | printf_filtered (_("The current target stack is:\n")); | |
4252 | ||
4253 | for (t = target_stack; t != NULL; t = t->beneath) | |
4254 | { | |
4255 | printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname); | |
4256 | } | |
4257 | } | |
4258 | ||
c6ebd6cf VP |
4259 | /* Controls if async mode is permitted. */ |
4260 | int target_async_permitted = 0; | |
4261 | ||
4262 | /* The set command writes to this variable. If the inferior is | |
4263 | executing, linux_nat_async_permitted is *not* updated. */ | |
4264 | static int target_async_permitted_1 = 0; | |
4265 | ||
4266 | static void | |
4267 | set_maintenance_target_async_permitted (char *args, int from_tty, | |
4268 | struct cmd_list_element *c) | |
4269 | { | |
c35b1492 | 4270 | if (have_live_inferiors ()) |
c6ebd6cf VP |
4271 | { |
4272 | target_async_permitted_1 = target_async_permitted; | |
4273 | error (_("Cannot change this setting while the inferior is running.")); | |
4274 | } | |
4275 | ||
4276 | target_async_permitted = target_async_permitted_1; | |
4277 | } | |
4278 | ||
4279 | static void | |
4280 | show_maintenance_target_async_permitted (struct ui_file *file, int from_tty, | |
4281 | struct cmd_list_element *c, | |
4282 | const char *value) | |
4283 | { | |
3e43a32a MS |
4284 | fprintf_filtered (file, |
4285 | _("Controlling the inferior in " | |
4286 | "asynchronous mode is %s.\n"), value); | |
c6ebd6cf VP |
4287 | } |
4288 | ||
d914c394 SS |
4289 | /* Temporary copies of permission settings. */ |
4290 | ||
4291 | static int may_write_registers_1 = 1; | |
4292 | static int may_write_memory_1 = 1; | |
4293 | static int may_insert_breakpoints_1 = 1; | |
4294 | static int may_insert_tracepoints_1 = 1; | |
4295 | static int may_insert_fast_tracepoints_1 = 1; | |
4296 | static int may_stop_1 = 1; | |
4297 | ||
4298 | /* Make the user-set values match the real values again. */ | |
4299 | ||
4300 | void | |
4301 | update_target_permissions (void) | |
4302 | { | |
4303 | may_write_registers_1 = may_write_registers; | |
4304 | may_write_memory_1 = may_write_memory; | |
4305 | may_insert_breakpoints_1 = may_insert_breakpoints; | |
4306 | may_insert_tracepoints_1 = may_insert_tracepoints; | |
4307 | may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints; | |
4308 | may_stop_1 = may_stop; | |
4309 | } | |
4310 | ||
4311 | /* The one function handles (most of) the permission flags in the same | |
4312 | way. */ | |
4313 | ||
4314 | static void | |
4315 | set_target_permissions (char *args, int from_tty, | |
4316 | struct cmd_list_element *c) | |
4317 | { | |
4318 | if (target_has_execution) | |
4319 | { | |
4320 | update_target_permissions (); | |
4321 | error (_("Cannot change this setting while the inferior is running.")); | |
4322 | } | |
4323 | ||
4324 | /* Make the real values match the user-changed values. */ | |
4325 | may_write_registers = may_write_registers_1; | |
4326 | may_insert_breakpoints = may_insert_breakpoints_1; | |
4327 | may_insert_tracepoints = may_insert_tracepoints_1; | |
4328 | may_insert_fast_tracepoints = may_insert_fast_tracepoints_1; | |
4329 | may_stop = may_stop_1; | |
4330 | update_observer_mode (); | |
4331 | } | |
4332 | ||
4333 | /* Set memory write permission independently of observer mode. */ | |
4334 | ||
4335 | static void | |
4336 | set_write_memory_permission (char *args, int from_tty, | |
4337 | struct cmd_list_element *c) | |
4338 | { | |
4339 | /* Make the real values match the user-changed values. */ | |
4340 | may_write_memory = may_write_memory_1; | |
4341 | update_observer_mode (); | |
4342 | } | |
4343 | ||
4344 | ||
c906108c | 4345 | void |
fba45db2 | 4346 | initialize_targets (void) |
c906108c SS |
4347 | { |
4348 | init_dummy_target (); | |
4349 | push_target (&dummy_target); | |
4350 | ||
4351 | add_info ("target", target_info, targ_desc); | |
4352 | add_info ("files", target_info, targ_desc); | |
4353 | ||
85c07804 AC |
4354 | add_setshow_zinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
4355 | Set target debugging."), _("\ | |
4356 | Show target debugging."), _("\ | |
333dabeb DJ |
4357 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
4358 | verbose. Changes do not take effect until the next \"run\" or \"target\"\n\ | |
85c07804 AC |
4359 | command."), |
4360 | NULL, | |
920d2a44 | 4361 | show_targetdebug, |
85c07804 | 4362 | &setdebuglist, &showdebuglist); |
3a11626d | 4363 | |
2bc416ba | 4364 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
4365 | &trust_readonly, _("\ |
4366 | Set mode for reading from readonly sections."), _("\ | |
4367 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
4368 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
4369 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 4370 | result in significant performance improvement for remote targets."), |
2c5b56ce | 4371 | NULL, |
920d2a44 | 4372 | show_trust_readonly, |
e707bbc2 | 4373 | &setlist, &showlist); |
96baa820 JM |
4374 | |
4375 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 4376 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 4377 | |
87680a14 JB |
4378 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
4379 | _("Print the name of each layer of the internal target stack."), | |
4380 | &maintenanceprintlist); | |
4381 | ||
c6ebd6cf VP |
4382 | add_setshow_boolean_cmd ("target-async", no_class, |
4383 | &target_async_permitted_1, _("\ | |
4384 | Set whether gdb controls the inferior in asynchronous mode."), _("\ | |
4385 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
4386 | Tells gdb whether to control the inferior in asynchronous mode."), | |
4387 | set_maintenance_target_async_permitted, | |
4388 | show_maintenance_target_async_permitted, | |
4389 | &setlist, | |
4390 | &showlist); | |
4391 | ||
4e5d721f | 4392 | add_setshow_boolean_cmd ("stack-cache", class_support, |
9cf1b572 | 4393 | &stack_cache_enabled_p_1, _("\ |
4e5d721f DE |
4394 | Set cache use for stack access."), _("\ |
4395 | Show cache use for stack access."), _("\ | |
4396 | When on, use the data cache for all stack access, regardless of any\n\ | |
4397 | configured memory regions. This improves remote performance significantly.\n\ | |
4398 | By default, caching for stack access is on."), | |
4399 | set_stack_cache_enabled_p, | |
4400 | show_stack_cache_enabled_p, | |
4401 | &setlist, &showlist); | |
4402 | ||
d914c394 SS |
4403 | add_setshow_boolean_cmd ("may-write-registers", class_support, |
4404 | &may_write_registers_1, _("\ | |
4405 | Set permission to write into registers."), _("\ | |
4406 | Show permission to write into registers."), _("\ | |
4407 | When this permission is on, GDB may write into the target's registers.\n\ | |
4408 | Otherwise, any sort of write attempt will result in an error."), | |
4409 | set_target_permissions, NULL, | |
4410 | &setlist, &showlist); | |
4411 | ||
4412 | add_setshow_boolean_cmd ("may-write-memory", class_support, | |
4413 | &may_write_memory_1, _("\ | |
4414 | Set permission to write into target memory."), _("\ | |
4415 | Show permission to write into target memory."), _("\ | |
4416 | When this permission is on, GDB may write into the target's memory.\n\ | |
4417 | Otherwise, any sort of write attempt will result in an error."), | |
4418 | set_write_memory_permission, NULL, | |
4419 | &setlist, &showlist); | |
4420 | ||
4421 | add_setshow_boolean_cmd ("may-insert-breakpoints", class_support, | |
4422 | &may_insert_breakpoints_1, _("\ | |
4423 | Set permission to insert breakpoints in the target."), _("\ | |
4424 | Show permission to insert breakpoints in the target."), _("\ | |
4425 | When this permission is on, GDB may insert breakpoints in the program.\n\ | |
4426 | Otherwise, any sort of insertion attempt will result in an error."), | |
4427 | set_target_permissions, NULL, | |
4428 | &setlist, &showlist); | |
4429 | ||
4430 | add_setshow_boolean_cmd ("may-insert-tracepoints", class_support, | |
4431 | &may_insert_tracepoints_1, _("\ | |
4432 | Set permission to insert tracepoints in the target."), _("\ | |
4433 | Show permission to insert tracepoints in the target."), _("\ | |
4434 | When this permission is on, GDB may insert tracepoints in the program.\n\ | |
4435 | Otherwise, any sort of insertion attempt will result in an error."), | |
4436 | set_target_permissions, NULL, | |
4437 | &setlist, &showlist); | |
4438 | ||
4439 | add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support, | |
4440 | &may_insert_fast_tracepoints_1, _("\ | |
4441 | Set permission to insert fast tracepoints in the target."), _("\ | |
4442 | Show permission to insert fast tracepoints in the target."), _("\ | |
4443 | When this permission is on, GDB may insert fast tracepoints.\n\ | |
4444 | Otherwise, any sort of insertion attempt will result in an error."), | |
4445 | set_target_permissions, NULL, | |
4446 | &setlist, &showlist); | |
4447 | ||
4448 | add_setshow_boolean_cmd ("may-interrupt", class_support, | |
4449 | &may_stop_1, _("\ | |
4450 | Set permission to interrupt or signal the target."), _("\ | |
4451 | Show permission to interrupt or signal the target."), _("\ | |
4452 | When this permission is on, GDB may interrupt/stop the target's execution.\n\ | |
4453 | Otherwise, any attempt to interrupt or stop will be ignored."), | |
4454 | set_target_permissions, NULL, | |
4455 | &setlist, &showlist); | |
4456 | ||
4457 | ||
8add0441 | 4458 | target_dcache = dcache_init (); |
c906108c | 4459 | } |