Commit | Line | Data |
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c906108c | 1 | /* Select target systems and architectures at runtime for GDB. |
7998dfc3 | 2 | |
28e7fd62 | 3 | Copyright (C) 1990-2013 Free Software Foundation, Inc. |
7998dfc3 | 4 | |
c906108c SS |
5 | Contributed by Cygnus Support. |
6 | ||
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
23 | #include <errno.h> | |
c906108c SS |
24 | #include "gdb_string.h" |
25 | #include "target.h" | |
26 | #include "gdbcmd.h" | |
27 | #include "symtab.h" | |
28 | #include "inferior.h" | |
29 | #include "bfd.h" | |
30 | #include "symfile.h" | |
31 | #include "objfiles.h" | |
4930751a | 32 | #include "dcache.h" |
c906108c | 33 | #include <signal.h> |
4e052eda | 34 | #include "regcache.h" |
0088c768 | 35 | #include "gdb_assert.h" |
b6591e8b | 36 | #include "gdbcore.h" |
9e35dae4 | 37 | #include "exceptions.h" |
424163ea | 38 | #include "target-descriptions.h" |
e1ac3328 | 39 | #include "gdbthread.h" |
b9db4ced | 40 | #include "solib.h" |
07b82ea5 | 41 | #include "exec.h" |
edb3359d | 42 | #include "inline-frame.h" |
2f4d8875 | 43 | #include "tracepoint.h" |
7313baad | 44 | #include "gdb/fileio.h" |
8ffcbaaf | 45 | #include "agent.h" |
c906108c | 46 | |
a14ed312 | 47 | static void target_info (char *, int); |
c906108c | 48 | |
a14ed312 | 49 | static void default_terminal_info (char *, int); |
c906108c | 50 | |
5009afc5 AS |
51 | static int default_watchpoint_addr_within_range (struct target_ops *, |
52 | CORE_ADDR, CORE_ADDR, int); | |
53 | ||
e0d24f8d WZ |
54 | static int default_region_ok_for_hw_watchpoint (CORE_ADDR, int); |
55 | ||
c25c4a8b | 56 | static void tcomplain (void) ATTRIBUTE_NORETURN; |
c906108c | 57 | |
a14ed312 | 58 | static int nomemory (CORE_ADDR, char *, int, int, struct target_ops *); |
c906108c | 59 | |
a14ed312 | 60 | static int return_zero (void); |
c906108c | 61 | |
a14ed312 | 62 | static int return_one (void); |
c906108c | 63 | |
ccaa32c7 GS |
64 | static int return_minus_one (void); |
65 | ||
a14ed312 | 66 | void target_ignore (void); |
c906108c | 67 | |
a14ed312 | 68 | static void target_command (char *, int); |
c906108c | 69 | |
a14ed312 | 70 | static struct target_ops *find_default_run_target (char *); |
c906108c | 71 | |
4b8a223f | 72 | static LONGEST default_xfer_partial (struct target_ops *ops, |
0088c768 | 73 | enum target_object object, |
1b0ba102 AC |
74 | const char *annex, gdb_byte *readbuf, |
75 | const gdb_byte *writebuf, | |
8aa91c1e | 76 | ULONGEST offset, LONGEST len); |
0088c768 | 77 | |
cf7a04e8 DJ |
78 | static LONGEST current_xfer_partial (struct target_ops *ops, |
79 | enum target_object object, | |
80 | const char *annex, gdb_byte *readbuf, | |
81 | const gdb_byte *writebuf, | |
82 | ULONGEST offset, LONGEST len); | |
c906108c | 83 | |
cf7a04e8 DJ |
84 | static LONGEST target_xfer_partial (struct target_ops *ops, |
85 | enum target_object object, | |
86 | const char *annex, | |
87 | void *readbuf, const void *writebuf, | |
88 | ULONGEST offset, LONGEST len); | |
c906108c | 89 | |
c2250ad1 UW |
90 | static struct gdbarch *default_thread_architecture (struct target_ops *ops, |
91 | ptid_t ptid); | |
92 | ||
a14ed312 | 93 | static void init_dummy_target (void); |
c906108c | 94 | |
aa869812 AC |
95 | static struct target_ops debug_target; |
96 | ||
a14ed312 | 97 | static void debug_to_open (char *, int); |
c906108c | 98 | |
316f2060 | 99 | static void debug_to_prepare_to_store (struct regcache *); |
c906108c | 100 | |
a14ed312 | 101 | static void debug_to_files_info (struct target_ops *); |
c906108c | 102 | |
a6d9a66e UW |
103 | static int debug_to_insert_breakpoint (struct gdbarch *, |
104 | struct bp_target_info *); | |
c906108c | 105 | |
a6d9a66e UW |
106 | static int debug_to_remove_breakpoint (struct gdbarch *, |
107 | struct bp_target_info *); | |
c906108c | 108 | |
ccaa32c7 GS |
109 | static int debug_to_can_use_hw_breakpoint (int, int, int); |
110 | ||
a6d9a66e UW |
111 | static int debug_to_insert_hw_breakpoint (struct gdbarch *, |
112 | struct bp_target_info *); | |
ccaa32c7 | 113 | |
a6d9a66e UW |
114 | static int debug_to_remove_hw_breakpoint (struct gdbarch *, |
115 | struct bp_target_info *); | |
ccaa32c7 | 116 | |
0cf6dd15 TJB |
117 | static int debug_to_insert_watchpoint (CORE_ADDR, int, int, |
118 | struct expression *); | |
ccaa32c7 | 119 | |
0cf6dd15 TJB |
120 | static int debug_to_remove_watchpoint (CORE_ADDR, int, int, |
121 | struct expression *); | |
ccaa32c7 GS |
122 | |
123 | static int debug_to_stopped_by_watchpoint (void); | |
124 | ||
4aa7a7f5 | 125 | static int debug_to_stopped_data_address (struct target_ops *, CORE_ADDR *); |
ccaa32c7 | 126 | |
5009afc5 AS |
127 | static int debug_to_watchpoint_addr_within_range (struct target_ops *, |
128 | CORE_ADDR, CORE_ADDR, int); | |
129 | ||
e0d24f8d WZ |
130 | static int debug_to_region_ok_for_hw_watchpoint (CORE_ADDR, int); |
131 | ||
0cf6dd15 TJB |
132 | static int debug_to_can_accel_watchpoint_condition (CORE_ADDR, int, int, |
133 | struct expression *); | |
134 | ||
a14ed312 | 135 | static void debug_to_terminal_init (void); |
c906108c | 136 | |
a14ed312 | 137 | static void debug_to_terminal_inferior (void); |
c906108c | 138 | |
a14ed312 | 139 | static void debug_to_terminal_ours_for_output (void); |
c906108c | 140 | |
a790ad35 SC |
141 | static void debug_to_terminal_save_ours (void); |
142 | ||
a14ed312 | 143 | static void debug_to_terminal_ours (void); |
c906108c | 144 | |
a14ed312 | 145 | static void debug_to_terminal_info (char *, int); |
c906108c | 146 | |
a14ed312 | 147 | static void debug_to_load (char *, int); |
c906108c | 148 | |
a14ed312 | 149 | static int debug_to_can_run (void); |
c906108c | 150 | |
94cc34af | 151 | static void debug_to_stop (ptid_t); |
c906108c | 152 | |
c906108c | 153 | /* Pointer to array of target architecture structures; the size of the |
2bc416ba | 154 | array; the current index into the array; the allocated size of the |
c906108c SS |
155 | array. */ |
156 | struct target_ops **target_structs; | |
157 | unsigned target_struct_size; | |
158 | unsigned target_struct_index; | |
159 | unsigned target_struct_allocsize; | |
160 | #define DEFAULT_ALLOCSIZE 10 | |
161 | ||
162 | /* The initial current target, so that there is always a semi-valid | |
163 | current target. */ | |
164 | ||
165 | static struct target_ops dummy_target; | |
166 | ||
167 | /* Top of target stack. */ | |
168 | ||
258b763a | 169 | static struct target_ops *target_stack; |
c906108c SS |
170 | |
171 | /* The target structure we are currently using to talk to a process | |
172 | or file or whatever "inferior" we have. */ | |
173 | ||
174 | struct target_ops current_target; | |
175 | ||
176 | /* Command list for target. */ | |
177 | ||
178 | static struct cmd_list_element *targetlist = NULL; | |
179 | ||
cf7a04e8 DJ |
180 | /* Nonzero if we should trust readonly sections from the |
181 | executable when reading memory. */ | |
182 | ||
183 | static int trust_readonly = 0; | |
184 | ||
8defab1a DJ |
185 | /* Nonzero if we should show true memory content including |
186 | memory breakpoint inserted by gdb. */ | |
187 | ||
188 | static int show_memory_breakpoints = 0; | |
189 | ||
d914c394 SS |
190 | /* These globals control whether GDB attempts to perform these |
191 | operations; they are useful for targets that need to prevent | |
192 | inadvertant disruption, such as in non-stop mode. */ | |
193 | ||
194 | int may_write_registers = 1; | |
195 | ||
196 | int may_write_memory = 1; | |
197 | ||
198 | int may_insert_breakpoints = 1; | |
199 | ||
200 | int may_insert_tracepoints = 1; | |
201 | ||
202 | int may_insert_fast_tracepoints = 1; | |
203 | ||
204 | int may_stop = 1; | |
205 | ||
c906108c SS |
206 | /* Non-zero if we want to see trace of target level stuff. */ |
207 | ||
ccce17b0 | 208 | static unsigned int targetdebug = 0; |
920d2a44 AC |
209 | static void |
210 | show_targetdebug (struct ui_file *file, int from_tty, | |
211 | struct cmd_list_element *c, const char *value) | |
212 | { | |
213 | fprintf_filtered (file, _("Target debugging is %s.\n"), value); | |
214 | } | |
c906108c | 215 | |
a14ed312 | 216 | static void setup_target_debug (void); |
c906108c | 217 | |
4e5d721f DE |
218 | /* The option sets this. */ |
219 | static int stack_cache_enabled_p_1 = 1; | |
220 | /* And set_stack_cache_enabled_p updates this. | |
221 | The reason for the separation is so that we don't flush the cache for | |
222 | on->on transitions. */ | |
223 | static int stack_cache_enabled_p = 1; | |
224 | ||
225 | /* This is called *after* the stack-cache has been set. | |
226 | Flush the cache for off->on and on->off transitions. | |
227 | There's no real need to flush the cache for on->off transitions, | |
228 | except cleanliness. */ | |
229 | ||
230 | static void | |
231 | set_stack_cache_enabled_p (char *args, int from_tty, | |
232 | struct cmd_list_element *c) | |
233 | { | |
234 | if (stack_cache_enabled_p != stack_cache_enabled_p_1) | |
235 | target_dcache_invalidate (); | |
236 | ||
237 | stack_cache_enabled_p = stack_cache_enabled_p_1; | |
238 | } | |
239 | ||
240 | static void | |
241 | show_stack_cache_enabled_p (struct ui_file *file, int from_tty, | |
242 | struct cmd_list_element *c, const char *value) | |
243 | { | |
244 | fprintf_filtered (file, _("Cache use for stack accesses is %s.\n"), value); | |
245 | } | |
246 | ||
247 | /* Cache of memory operations, to speed up remote access. */ | |
248 | static DCACHE *target_dcache; | |
249 | ||
250 | /* Invalidate the target dcache. */ | |
251 | ||
252 | void | |
253 | target_dcache_invalidate (void) | |
254 | { | |
255 | dcache_invalidate (target_dcache); | |
256 | } | |
4930751a | 257 | |
c906108c SS |
258 | /* The user just typed 'target' without the name of a target. */ |
259 | ||
c906108c | 260 | static void |
fba45db2 | 261 | target_command (char *arg, int from_tty) |
c906108c SS |
262 | { |
263 | fputs_filtered ("Argument required (target name). Try `help target'\n", | |
264 | gdb_stdout); | |
265 | } | |
266 | ||
c35b1492 PA |
267 | /* Default target_has_* methods for process_stratum targets. */ |
268 | ||
269 | int | |
270 | default_child_has_all_memory (struct target_ops *ops) | |
271 | { | |
272 | /* If no inferior selected, then we can't read memory here. */ | |
273 | if (ptid_equal (inferior_ptid, null_ptid)) | |
274 | return 0; | |
275 | ||
276 | return 1; | |
277 | } | |
278 | ||
279 | int | |
280 | default_child_has_memory (struct target_ops *ops) | |
281 | { | |
282 | /* If no inferior selected, then we can't read memory here. */ | |
283 | if (ptid_equal (inferior_ptid, null_ptid)) | |
284 | return 0; | |
285 | ||
286 | return 1; | |
287 | } | |
288 | ||
289 | int | |
290 | default_child_has_stack (struct target_ops *ops) | |
291 | { | |
292 | /* If no inferior selected, there's no stack. */ | |
293 | if (ptid_equal (inferior_ptid, null_ptid)) | |
294 | return 0; | |
295 | ||
296 | return 1; | |
297 | } | |
298 | ||
299 | int | |
300 | default_child_has_registers (struct target_ops *ops) | |
301 | { | |
302 | /* Can't read registers from no inferior. */ | |
303 | if (ptid_equal (inferior_ptid, null_ptid)) | |
304 | return 0; | |
305 | ||
306 | return 1; | |
307 | } | |
308 | ||
309 | int | |
aeaec162 | 310 | default_child_has_execution (struct target_ops *ops, ptid_t the_ptid) |
c35b1492 PA |
311 | { |
312 | /* If there's no thread selected, then we can't make it run through | |
313 | hoops. */ | |
aeaec162 | 314 | if (ptid_equal (the_ptid, null_ptid)) |
c35b1492 PA |
315 | return 0; |
316 | ||
317 | return 1; | |
318 | } | |
319 | ||
320 | ||
321 | int | |
322 | target_has_all_memory_1 (void) | |
323 | { | |
324 | struct target_ops *t; | |
325 | ||
326 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
327 | if (t->to_has_all_memory (t)) | |
328 | return 1; | |
329 | ||
330 | return 0; | |
331 | } | |
332 | ||
333 | int | |
334 | target_has_memory_1 (void) | |
335 | { | |
336 | struct target_ops *t; | |
337 | ||
338 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
339 | if (t->to_has_memory (t)) | |
340 | return 1; | |
341 | ||
342 | return 0; | |
343 | } | |
344 | ||
345 | int | |
346 | target_has_stack_1 (void) | |
347 | { | |
348 | struct target_ops *t; | |
349 | ||
350 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
351 | if (t->to_has_stack (t)) | |
352 | return 1; | |
353 | ||
354 | return 0; | |
355 | } | |
356 | ||
357 | int | |
358 | target_has_registers_1 (void) | |
359 | { | |
360 | struct target_ops *t; | |
361 | ||
362 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
363 | if (t->to_has_registers (t)) | |
364 | return 1; | |
365 | ||
366 | return 0; | |
367 | } | |
368 | ||
369 | int | |
aeaec162 | 370 | target_has_execution_1 (ptid_t the_ptid) |
c35b1492 PA |
371 | { |
372 | struct target_ops *t; | |
373 | ||
374 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
aeaec162 | 375 | if (t->to_has_execution (t, the_ptid)) |
c35b1492 PA |
376 | return 1; |
377 | ||
378 | return 0; | |
379 | } | |
380 | ||
aeaec162 TT |
381 | int |
382 | target_has_execution_current (void) | |
383 | { | |
384 | return target_has_execution_1 (inferior_ptid); | |
385 | } | |
386 | ||
c906108c SS |
387 | /* Add a possible target architecture to the list. */ |
388 | ||
389 | void | |
fba45db2 | 390 | add_target (struct target_ops *t) |
c906108c | 391 | { |
0088c768 | 392 | /* Provide default values for all "must have" methods. */ |
0b603eba AC |
393 | if (t->to_xfer_partial == NULL) |
394 | t->to_xfer_partial = default_xfer_partial; | |
0088c768 | 395 | |
c35b1492 PA |
396 | if (t->to_has_all_memory == NULL) |
397 | t->to_has_all_memory = (int (*) (struct target_ops *)) return_zero; | |
398 | ||
399 | if (t->to_has_memory == NULL) | |
400 | t->to_has_memory = (int (*) (struct target_ops *)) return_zero; | |
401 | ||
402 | if (t->to_has_stack == NULL) | |
403 | t->to_has_stack = (int (*) (struct target_ops *)) return_zero; | |
404 | ||
405 | if (t->to_has_registers == NULL) | |
406 | t->to_has_registers = (int (*) (struct target_ops *)) return_zero; | |
407 | ||
408 | if (t->to_has_execution == NULL) | |
aeaec162 | 409 | t->to_has_execution = (int (*) (struct target_ops *, ptid_t)) return_zero; |
c35b1492 | 410 | |
c906108c SS |
411 | if (!target_structs) |
412 | { | |
413 | target_struct_allocsize = DEFAULT_ALLOCSIZE; | |
414 | target_structs = (struct target_ops **) xmalloc | |
415 | (target_struct_allocsize * sizeof (*target_structs)); | |
416 | } | |
417 | if (target_struct_size >= target_struct_allocsize) | |
418 | { | |
419 | target_struct_allocsize *= 2; | |
420 | target_structs = (struct target_ops **) | |
c5aa993b JM |
421 | xrealloc ((char *) target_structs, |
422 | target_struct_allocsize * sizeof (*target_structs)); | |
c906108c SS |
423 | } |
424 | target_structs[target_struct_size++] = t; | |
c906108c SS |
425 | |
426 | if (targetlist == NULL) | |
1bedd215 AC |
427 | add_prefix_cmd ("target", class_run, target_command, _("\ |
428 | Connect to a target machine or process.\n\ | |
c906108c SS |
429 | The first argument is the type or protocol of the target machine.\n\ |
430 | Remaining arguments are interpreted by the target protocol. For more\n\ | |
431 | information on the arguments for a particular protocol, type\n\ | |
1bedd215 | 432 | `help target ' followed by the protocol name."), |
c906108c SS |
433 | &targetlist, "target ", 0, &cmdlist); |
434 | add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc, &targetlist); | |
435 | } | |
436 | ||
437 | /* Stub functions */ | |
438 | ||
439 | void | |
fba45db2 | 440 | target_ignore (void) |
c906108c SS |
441 | { |
442 | } | |
443 | ||
7d85a9c0 JB |
444 | void |
445 | target_kill (void) | |
446 | { | |
447 | struct target_ops *t; | |
448 | ||
449 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
450 | if (t->to_kill != NULL) | |
451 | { | |
452 | if (targetdebug) | |
453 | fprintf_unfiltered (gdb_stdlog, "target_kill ()\n"); | |
454 | ||
455 | t->to_kill (t); | |
456 | return; | |
457 | } | |
458 | ||
459 | noprocess (); | |
460 | } | |
461 | ||
11cf8741 JM |
462 | void |
463 | target_load (char *arg, int from_tty) | |
464 | { | |
4e5d721f | 465 | target_dcache_invalidate (); |
11cf8741 JM |
466 | (*current_target.to_load) (arg, from_tty); |
467 | } | |
468 | ||
947b8855 PA |
469 | void |
470 | target_create_inferior (char *exec_file, char *args, | |
471 | char **env, int from_tty) | |
136d6dae VP |
472 | { |
473 | struct target_ops *t; | |
5d502164 | 474 | |
136d6dae VP |
475 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
476 | { | |
477 | if (t->to_create_inferior != NULL) | |
478 | { | |
479 | t->to_create_inferior (t, exec_file, args, env, from_tty); | |
947b8855 PA |
480 | if (targetdebug) |
481 | fprintf_unfiltered (gdb_stdlog, | |
482 | "target_create_inferior (%s, %s, xxx, %d)\n", | |
483 | exec_file, args, from_tty); | |
136d6dae VP |
484 | return; |
485 | } | |
486 | } | |
487 | ||
488 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 489 | _("could not find a target to create inferior")); |
136d6dae VP |
490 | } |
491 | ||
d9d2d8b6 PA |
492 | void |
493 | target_terminal_inferior (void) | |
494 | { | |
495 | /* A background resume (``run&'') should leave GDB in control of the | |
c378eb4e | 496 | terminal. Use target_can_async_p, not target_is_async_p, since at |
ba7f6c64 VP |
497 | this point the target is not async yet. However, if sync_execution |
498 | is not set, we know it will become async prior to resume. */ | |
499 | if (target_can_async_p () && !sync_execution) | |
d9d2d8b6 PA |
500 | return; |
501 | ||
502 | /* If GDB is resuming the inferior in the foreground, install | |
503 | inferior's terminal modes. */ | |
504 | (*current_target.to_terminal_inferior) (); | |
505 | } | |
136d6dae | 506 | |
c906108c | 507 | static int |
fba45db2 KB |
508 | nomemory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
509 | struct target_ops *t) | |
c906108c | 510 | { |
c378eb4e MS |
511 | errno = EIO; /* Can't read/write this location. */ |
512 | return 0; /* No bytes handled. */ | |
c906108c SS |
513 | } |
514 | ||
515 | static void | |
fba45db2 | 516 | tcomplain (void) |
c906108c | 517 | { |
8a3fe4f8 | 518 | error (_("You can't do that when your target is `%s'"), |
c906108c SS |
519 | current_target.to_shortname); |
520 | } | |
521 | ||
522 | void | |
fba45db2 | 523 | noprocess (void) |
c906108c | 524 | { |
8a3fe4f8 | 525 | error (_("You can't do that without a process to debug.")); |
c906108c SS |
526 | } |
527 | ||
c906108c | 528 | static void |
fba45db2 | 529 | default_terminal_info (char *args, int from_tty) |
c906108c | 530 | { |
a3f17187 | 531 | printf_unfiltered (_("No saved terminal information.\n")); |
c906108c SS |
532 | } |
533 | ||
0ef643c8 JB |
534 | /* A default implementation for the to_get_ada_task_ptid target method. |
535 | ||
536 | This function builds the PTID by using both LWP and TID as part of | |
537 | the PTID lwp and tid elements. The pid used is the pid of the | |
538 | inferior_ptid. */ | |
539 | ||
2c0b251b | 540 | static ptid_t |
0ef643c8 JB |
541 | default_get_ada_task_ptid (long lwp, long tid) |
542 | { | |
543 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid); | |
544 | } | |
545 | ||
32231432 PA |
546 | static enum exec_direction_kind |
547 | default_execution_direction (void) | |
548 | { | |
549 | if (!target_can_execute_reverse) | |
550 | return EXEC_FORWARD; | |
551 | else if (!target_can_async_p ()) | |
552 | return EXEC_FORWARD; | |
553 | else | |
554 | gdb_assert_not_reached ("\ | |
555 | to_execution_direction must be implemented for reverse async"); | |
556 | } | |
557 | ||
7998dfc3 AC |
558 | /* Go through the target stack from top to bottom, copying over zero |
559 | entries in current_target, then filling in still empty entries. In | |
560 | effect, we are doing class inheritance through the pushed target | |
561 | vectors. | |
562 | ||
563 | NOTE: cagney/2003-10-17: The problem with this inheritance, as it | |
564 | is currently implemented, is that it discards any knowledge of | |
565 | which target an inherited method originally belonged to. | |
566 | Consequently, new new target methods should instead explicitly and | |
567 | locally search the target stack for the target that can handle the | |
568 | request. */ | |
c906108c SS |
569 | |
570 | static void | |
7998dfc3 | 571 | update_current_target (void) |
c906108c | 572 | { |
7998dfc3 AC |
573 | struct target_ops *t; |
574 | ||
08d8bcd7 | 575 | /* First, reset current's contents. */ |
7998dfc3 AC |
576 | memset (¤t_target, 0, sizeof (current_target)); |
577 | ||
578 | #define INHERIT(FIELD, TARGET) \ | |
579 | if (!current_target.FIELD) \ | |
580 | current_target.FIELD = (TARGET)->FIELD | |
581 | ||
582 | for (t = target_stack; t; t = t->beneath) | |
583 | { | |
584 | INHERIT (to_shortname, t); | |
585 | INHERIT (to_longname, t); | |
586 | INHERIT (to_doc, t); | |
b52323fa UW |
587 | /* Do not inherit to_open. */ |
588 | /* Do not inherit to_close. */ | |
136d6dae | 589 | /* Do not inherit to_attach. */ |
7998dfc3 | 590 | INHERIT (to_post_attach, t); |
dc177b7a | 591 | INHERIT (to_attach_no_wait, t); |
136d6dae | 592 | /* Do not inherit to_detach. */ |
597320e7 | 593 | /* Do not inherit to_disconnect. */ |
28439f5e | 594 | /* Do not inherit to_resume. */ |
117de6a9 | 595 | /* Do not inherit to_wait. */ |
28439f5e PA |
596 | /* Do not inherit to_fetch_registers. */ |
597 | /* Do not inherit to_store_registers. */ | |
7998dfc3 | 598 | INHERIT (to_prepare_to_store, t); |
c8e73a31 | 599 | INHERIT (deprecated_xfer_memory, t); |
7998dfc3 AC |
600 | INHERIT (to_files_info, t); |
601 | INHERIT (to_insert_breakpoint, t); | |
602 | INHERIT (to_remove_breakpoint, t); | |
603 | INHERIT (to_can_use_hw_breakpoint, t); | |
604 | INHERIT (to_insert_hw_breakpoint, t); | |
605 | INHERIT (to_remove_hw_breakpoint, t); | |
f1310107 | 606 | /* Do not inherit to_ranged_break_num_registers. */ |
7998dfc3 AC |
607 | INHERIT (to_insert_watchpoint, t); |
608 | INHERIT (to_remove_watchpoint, t); | |
9c06b0b4 TJB |
609 | /* Do not inherit to_insert_mask_watchpoint. */ |
610 | /* Do not inherit to_remove_mask_watchpoint. */ | |
7998dfc3 | 611 | INHERIT (to_stopped_data_address, t); |
74174d2e | 612 | INHERIT (to_have_steppable_watchpoint, t); |
7998dfc3 | 613 | INHERIT (to_have_continuable_watchpoint, t); |
5009afc5 AS |
614 | INHERIT (to_stopped_by_watchpoint, t); |
615 | INHERIT (to_watchpoint_addr_within_range, t); | |
e0d24f8d | 616 | INHERIT (to_region_ok_for_hw_watchpoint, t); |
0cf6dd15 | 617 | INHERIT (to_can_accel_watchpoint_condition, t); |
9c06b0b4 | 618 | /* Do not inherit to_masked_watch_num_registers. */ |
7998dfc3 AC |
619 | INHERIT (to_terminal_init, t); |
620 | INHERIT (to_terminal_inferior, t); | |
621 | INHERIT (to_terminal_ours_for_output, t); | |
622 | INHERIT (to_terminal_ours, t); | |
623 | INHERIT (to_terminal_save_ours, t); | |
624 | INHERIT (to_terminal_info, t); | |
7d85a9c0 | 625 | /* Do not inherit to_kill. */ |
7998dfc3 | 626 | INHERIT (to_load, t); |
136d6dae | 627 | /* Do no inherit to_create_inferior. */ |
7998dfc3 | 628 | INHERIT (to_post_startup_inferior, t); |
7998dfc3 AC |
629 | INHERIT (to_insert_fork_catchpoint, t); |
630 | INHERIT (to_remove_fork_catchpoint, t); | |
631 | INHERIT (to_insert_vfork_catchpoint, t); | |
632 | INHERIT (to_remove_vfork_catchpoint, t); | |
ee057212 | 633 | /* Do not inherit to_follow_fork. */ |
7998dfc3 AC |
634 | INHERIT (to_insert_exec_catchpoint, t); |
635 | INHERIT (to_remove_exec_catchpoint, t); | |
a96d9b2e | 636 | INHERIT (to_set_syscall_catchpoint, t); |
7998dfc3 | 637 | INHERIT (to_has_exited, t); |
82892036 | 638 | /* Do not inherit to_mourn_inferior. */ |
7998dfc3 | 639 | INHERIT (to_can_run, t); |
2455069d | 640 | /* Do not inherit to_pass_signals. */ |
9b224c5e | 641 | /* Do not inherit to_program_signals. */ |
28439f5e PA |
642 | /* Do not inherit to_thread_alive. */ |
643 | /* Do not inherit to_find_new_threads. */ | |
117de6a9 | 644 | /* Do not inherit to_pid_to_str. */ |
7998dfc3 | 645 | INHERIT (to_extra_thread_info, t); |
4694da01 | 646 | INHERIT (to_thread_name, t); |
7998dfc3 | 647 | INHERIT (to_stop, t); |
4b8a223f | 648 | /* Do not inherit to_xfer_partial. */ |
7998dfc3 | 649 | INHERIT (to_rcmd, t); |
7998dfc3 | 650 | INHERIT (to_pid_to_exec_file, t); |
49d03eab | 651 | INHERIT (to_log_command, t); |
7998dfc3 | 652 | INHERIT (to_stratum, t); |
c378eb4e MS |
653 | /* Do not inherit to_has_all_memory. */ |
654 | /* Do not inherit to_has_memory. */ | |
655 | /* Do not inherit to_has_stack. */ | |
656 | /* Do not inherit to_has_registers. */ | |
657 | /* Do not inherit to_has_execution. */ | |
7998dfc3 | 658 | INHERIT (to_has_thread_control, t); |
7998dfc3 AC |
659 | INHERIT (to_can_async_p, t); |
660 | INHERIT (to_is_async_p, t); | |
661 | INHERIT (to_async, t); | |
7998dfc3 AC |
662 | INHERIT (to_find_memory_regions, t); |
663 | INHERIT (to_make_corefile_notes, t); | |
6b04bdb7 MS |
664 | INHERIT (to_get_bookmark, t); |
665 | INHERIT (to_goto_bookmark, t); | |
117de6a9 | 666 | /* Do not inherit to_get_thread_local_address. */ |
b2175913 | 667 | INHERIT (to_can_execute_reverse, t); |
32231432 | 668 | INHERIT (to_execution_direction, t); |
c2250ad1 | 669 | INHERIT (to_thread_architecture, t); |
424163ea | 670 | /* Do not inherit to_read_description. */ |
0ef643c8 | 671 | INHERIT (to_get_ada_task_ptid, t); |
08388c79 | 672 | /* Do not inherit to_search_memory. */ |
8a305172 | 673 | INHERIT (to_supports_multi_process, t); |
d248b706 | 674 | INHERIT (to_supports_enable_disable_tracepoint, t); |
3065dfb6 | 675 | INHERIT (to_supports_string_tracing, t); |
35b1e5cc SS |
676 | INHERIT (to_trace_init, t); |
677 | INHERIT (to_download_tracepoint, t); | |
1e4d1764 | 678 | INHERIT (to_can_download_tracepoint, t); |
35b1e5cc | 679 | INHERIT (to_download_trace_state_variable, t); |
d248b706 KY |
680 | INHERIT (to_enable_tracepoint, t); |
681 | INHERIT (to_disable_tracepoint, t); | |
35b1e5cc SS |
682 | INHERIT (to_trace_set_readonly_regions, t); |
683 | INHERIT (to_trace_start, t); | |
684 | INHERIT (to_get_trace_status, t); | |
f196051f | 685 | INHERIT (to_get_tracepoint_status, t); |
35b1e5cc SS |
686 | INHERIT (to_trace_stop, t); |
687 | INHERIT (to_trace_find, t); | |
688 | INHERIT (to_get_trace_state_variable_value, t); | |
00bf0b85 SS |
689 | INHERIT (to_save_trace_data, t); |
690 | INHERIT (to_upload_tracepoints, t); | |
691 | INHERIT (to_upload_trace_state_variables, t); | |
692 | INHERIT (to_get_raw_trace_data, t); | |
405f8e94 | 693 | INHERIT (to_get_min_fast_tracepoint_insn_len, t); |
35b1e5cc | 694 | INHERIT (to_set_disconnected_tracing, t); |
4daf5ac0 | 695 | INHERIT (to_set_circular_trace_buffer, t); |
f6f899bf | 696 | INHERIT (to_set_trace_buffer_size, t); |
f196051f | 697 | INHERIT (to_set_trace_notes, t); |
711e434b | 698 | INHERIT (to_get_tib_address, t); |
d914c394 | 699 | INHERIT (to_set_permissions, t); |
0fb4aa4b PA |
700 | INHERIT (to_static_tracepoint_marker_at, t); |
701 | INHERIT (to_static_tracepoint_markers_by_strid, t); | |
b3b9301e | 702 | INHERIT (to_traceframe_info, t); |
d1feda86 YQ |
703 | INHERIT (to_use_agent, t); |
704 | INHERIT (to_can_use_agent, t); | |
7998dfc3 | 705 | INHERIT (to_magic, t); |
b775012e | 706 | INHERIT (to_supports_evaluation_of_breakpoint_conditions, t); |
d3ce09f5 | 707 | INHERIT (to_can_run_breakpoint_commands, t); |
fd79ecee | 708 | /* Do not inherit to_memory_map. */ |
a76d924d DJ |
709 | /* Do not inherit to_flash_erase. */ |
710 | /* Do not inherit to_flash_done. */ | |
7998dfc3 AC |
711 | } |
712 | #undef INHERIT | |
713 | ||
714 | /* Clean up a target struct so it no longer has any zero pointers in | |
0088c768 AC |
715 | it. Some entries are defaulted to a method that print an error, |
716 | others are hard-wired to a standard recursive default. */ | |
c906108c SS |
717 | |
718 | #define de_fault(field, value) \ | |
7998dfc3 AC |
719 | if (!current_target.field) \ |
720 | current_target.field = value | |
0d06e24b | 721 | |
2bc416ba DJ |
722 | de_fault (to_open, |
723 | (void (*) (char *, int)) | |
0d06e24b | 724 | tcomplain); |
2bc416ba DJ |
725 | de_fault (to_close, |
726 | (void (*) (int)) | |
0d06e24b | 727 | target_ignore); |
2bc416ba DJ |
728 | de_fault (to_post_attach, |
729 | (void (*) (int)) | |
0d06e24b | 730 | target_ignore); |
2bc416ba | 731 | de_fault (to_prepare_to_store, |
316f2060 | 732 | (void (*) (struct regcache *)) |
0d06e24b | 733 | noprocess); |
2bc416ba | 734 | de_fault (deprecated_xfer_memory, |
3e43a32a MS |
735 | (int (*) (CORE_ADDR, gdb_byte *, int, int, |
736 | struct mem_attrib *, struct target_ops *)) | |
0d06e24b | 737 | nomemory); |
2bc416ba DJ |
738 | de_fault (to_files_info, |
739 | (void (*) (struct target_ops *)) | |
0d06e24b | 740 | target_ignore); |
2bc416ba | 741 | de_fault (to_insert_breakpoint, |
0d06e24b | 742 | memory_insert_breakpoint); |
2bc416ba | 743 | de_fault (to_remove_breakpoint, |
0d06e24b | 744 | memory_remove_breakpoint); |
ccaa32c7 GS |
745 | de_fault (to_can_use_hw_breakpoint, |
746 | (int (*) (int, int, int)) | |
747 | return_zero); | |
748 | de_fault (to_insert_hw_breakpoint, | |
a6d9a66e | 749 | (int (*) (struct gdbarch *, struct bp_target_info *)) |
ccaa32c7 GS |
750 | return_minus_one); |
751 | de_fault (to_remove_hw_breakpoint, | |
a6d9a66e | 752 | (int (*) (struct gdbarch *, struct bp_target_info *)) |
ccaa32c7 GS |
753 | return_minus_one); |
754 | de_fault (to_insert_watchpoint, | |
0cf6dd15 | 755 | (int (*) (CORE_ADDR, int, int, struct expression *)) |
ccaa32c7 GS |
756 | return_minus_one); |
757 | de_fault (to_remove_watchpoint, | |
0cf6dd15 | 758 | (int (*) (CORE_ADDR, int, int, struct expression *)) |
ccaa32c7 GS |
759 | return_minus_one); |
760 | de_fault (to_stopped_by_watchpoint, | |
761 | (int (*) (void)) | |
762 | return_zero); | |
763 | de_fault (to_stopped_data_address, | |
4aa7a7f5 | 764 | (int (*) (struct target_ops *, CORE_ADDR *)) |
ccaa32c7 | 765 | return_zero); |
5009afc5 AS |
766 | de_fault (to_watchpoint_addr_within_range, |
767 | default_watchpoint_addr_within_range); | |
e0d24f8d WZ |
768 | de_fault (to_region_ok_for_hw_watchpoint, |
769 | default_region_ok_for_hw_watchpoint); | |
0cf6dd15 TJB |
770 | de_fault (to_can_accel_watchpoint_condition, |
771 | (int (*) (CORE_ADDR, int, int, struct expression *)) | |
772 | return_zero); | |
2bc416ba DJ |
773 | de_fault (to_terminal_init, |
774 | (void (*) (void)) | |
0d06e24b | 775 | target_ignore); |
2bc416ba DJ |
776 | de_fault (to_terminal_inferior, |
777 | (void (*) (void)) | |
0d06e24b | 778 | target_ignore); |
2bc416ba DJ |
779 | de_fault (to_terminal_ours_for_output, |
780 | (void (*) (void)) | |
0d06e24b | 781 | target_ignore); |
2bc416ba DJ |
782 | de_fault (to_terminal_ours, |
783 | (void (*) (void)) | |
0d06e24b | 784 | target_ignore); |
2bc416ba DJ |
785 | de_fault (to_terminal_save_ours, |
786 | (void (*) (void)) | |
a790ad35 | 787 | target_ignore); |
2bc416ba | 788 | de_fault (to_terminal_info, |
0d06e24b | 789 | default_terminal_info); |
2bc416ba DJ |
790 | de_fault (to_load, |
791 | (void (*) (char *, int)) | |
0d06e24b | 792 | tcomplain); |
2bc416ba DJ |
793 | de_fault (to_post_startup_inferior, |
794 | (void (*) (ptid_t)) | |
0d06e24b | 795 | target_ignore); |
2bc416ba | 796 | de_fault (to_insert_fork_catchpoint, |
77b06cd7 TJB |
797 | (int (*) (int)) |
798 | return_one); | |
2bc416ba DJ |
799 | de_fault (to_remove_fork_catchpoint, |
800 | (int (*) (int)) | |
77b06cd7 | 801 | return_one); |
2bc416ba | 802 | de_fault (to_insert_vfork_catchpoint, |
77b06cd7 TJB |
803 | (int (*) (int)) |
804 | return_one); | |
2bc416ba DJ |
805 | de_fault (to_remove_vfork_catchpoint, |
806 | (int (*) (int)) | |
77b06cd7 | 807 | return_one); |
2bc416ba | 808 | de_fault (to_insert_exec_catchpoint, |
77b06cd7 TJB |
809 | (int (*) (int)) |
810 | return_one); | |
2bc416ba DJ |
811 | de_fault (to_remove_exec_catchpoint, |
812 | (int (*) (int)) | |
77b06cd7 | 813 | return_one); |
a96d9b2e SDJ |
814 | de_fault (to_set_syscall_catchpoint, |
815 | (int (*) (int, int, int, int, int *)) | |
77b06cd7 | 816 | return_one); |
2bc416ba DJ |
817 | de_fault (to_has_exited, |
818 | (int (*) (int, int, int *)) | |
0d06e24b | 819 | return_zero); |
2bc416ba | 820 | de_fault (to_can_run, |
0d06e24b | 821 | return_zero); |
2bc416ba DJ |
822 | de_fault (to_extra_thread_info, |
823 | (char *(*) (struct thread_info *)) | |
0d06e24b | 824 | return_zero); |
4694da01 TT |
825 | de_fault (to_thread_name, |
826 | (char *(*) (struct thread_info *)) | |
827 | return_zero); | |
2bc416ba | 828 | de_fault (to_stop, |
94cc34af | 829 | (void (*) (ptid_t)) |
0d06e24b | 830 | target_ignore); |
cf7a04e8 | 831 | current_target.to_xfer_partial = current_xfer_partial; |
2bc416ba DJ |
832 | de_fault (to_rcmd, |
833 | (void (*) (char *, struct ui_file *)) | |
0d06e24b | 834 | tcomplain); |
2bc416ba DJ |
835 | de_fault (to_pid_to_exec_file, |
836 | (char *(*) (int)) | |
0d06e24b | 837 | return_zero); |
2bc416ba DJ |
838 | de_fault (to_async, |
839 | (void (*) (void (*) (enum inferior_event_type, void*), void*)) | |
0d06e24b | 840 | tcomplain); |
c2250ad1 UW |
841 | de_fault (to_thread_architecture, |
842 | default_thread_architecture); | |
424163ea | 843 | current_target.to_read_description = NULL; |
0ef643c8 JB |
844 | de_fault (to_get_ada_task_ptid, |
845 | (ptid_t (*) (long, long)) | |
846 | default_get_ada_task_ptid); | |
8a305172 PA |
847 | de_fault (to_supports_multi_process, |
848 | (int (*) (void)) | |
849 | return_zero); | |
d248b706 KY |
850 | de_fault (to_supports_enable_disable_tracepoint, |
851 | (int (*) (void)) | |
852 | return_zero); | |
3065dfb6 SS |
853 | de_fault (to_supports_string_tracing, |
854 | (int (*) (void)) | |
855 | return_zero); | |
35b1e5cc SS |
856 | de_fault (to_trace_init, |
857 | (void (*) (void)) | |
858 | tcomplain); | |
859 | de_fault (to_download_tracepoint, | |
e8ba3115 | 860 | (void (*) (struct bp_location *)) |
35b1e5cc | 861 | tcomplain); |
1e4d1764 YQ |
862 | de_fault (to_can_download_tracepoint, |
863 | (int (*) (void)) | |
864 | return_zero); | |
35b1e5cc SS |
865 | de_fault (to_download_trace_state_variable, |
866 | (void (*) (struct trace_state_variable *)) | |
867 | tcomplain); | |
d248b706 KY |
868 | de_fault (to_enable_tracepoint, |
869 | (void (*) (struct bp_location *)) | |
870 | tcomplain); | |
871 | de_fault (to_disable_tracepoint, | |
872 | (void (*) (struct bp_location *)) | |
873 | tcomplain); | |
35b1e5cc SS |
874 | de_fault (to_trace_set_readonly_regions, |
875 | (void (*) (void)) | |
876 | tcomplain); | |
877 | de_fault (to_trace_start, | |
878 | (void (*) (void)) | |
879 | tcomplain); | |
880 | de_fault (to_get_trace_status, | |
00bf0b85 | 881 | (int (*) (struct trace_status *)) |
35b1e5cc | 882 | return_minus_one); |
f196051f SS |
883 | de_fault (to_get_tracepoint_status, |
884 | (void (*) (struct breakpoint *, struct uploaded_tp *)) | |
885 | tcomplain); | |
35b1e5cc SS |
886 | de_fault (to_trace_stop, |
887 | (void (*) (void)) | |
888 | tcomplain); | |
889 | de_fault (to_trace_find, | |
890 | (int (*) (enum trace_find_type, int, ULONGEST, ULONGEST, int *)) | |
4136fdd2 | 891 | return_minus_one); |
35b1e5cc SS |
892 | de_fault (to_get_trace_state_variable_value, |
893 | (int (*) (int, LONGEST *)) | |
894 | return_zero); | |
00bf0b85 | 895 | de_fault (to_save_trace_data, |
011aacb0 | 896 | (int (*) (const char *)) |
00bf0b85 SS |
897 | tcomplain); |
898 | de_fault (to_upload_tracepoints, | |
899 | (int (*) (struct uploaded_tp **)) | |
900 | return_zero); | |
901 | de_fault (to_upload_trace_state_variables, | |
902 | (int (*) (struct uploaded_tsv **)) | |
903 | return_zero); | |
904 | de_fault (to_get_raw_trace_data, | |
905 | (LONGEST (*) (gdb_byte *, ULONGEST, LONGEST)) | |
906 | tcomplain); | |
405f8e94 SS |
907 | de_fault (to_get_min_fast_tracepoint_insn_len, |
908 | (int (*) (void)) | |
909 | return_minus_one); | |
35b1e5cc SS |
910 | de_fault (to_set_disconnected_tracing, |
911 | (void (*) (int)) | |
4daf5ac0 SS |
912 | target_ignore); |
913 | de_fault (to_set_circular_trace_buffer, | |
914 | (void (*) (int)) | |
915 | target_ignore); | |
f6f899bf HAQ |
916 | de_fault (to_set_trace_buffer_size, |
917 | (void (*) (LONGEST)) | |
918 | target_ignore); | |
f196051f SS |
919 | de_fault (to_set_trace_notes, |
920 | (int (*) (char *, char *, char *)) | |
921 | return_zero); | |
711e434b PM |
922 | de_fault (to_get_tib_address, |
923 | (int (*) (ptid_t, CORE_ADDR *)) | |
924 | tcomplain); | |
d914c394 SS |
925 | de_fault (to_set_permissions, |
926 | (void (*) (void)) | |
927 | target_ignore); | |
0fb4aa4b PA |
928 | de_fault (to_static_tracepoint_marker_at, |
929 | (int (*) (CORE_ADDR, struct static_tracepoint_marker *)) | |
930 | return_zero); | |
931 | de_fault (to_static_tracepoint_markers_by_strid, | |
932 | (VEC(static_tracepoint_marker_p) * (*) (const char *)) | |
933 | tcomplain); | |
b3b9301e PA |
934 | de_fault (to_traceframe_info, |
935 | (struct traceframe_info * (*) (void)) | |
936 | tcomplain); | |
b775012e LM |
937 | de_fault (to_supports_evaluation_of_breakpoint_conditions, |
938 | (int (*) (void)) | |
939 | return_zero); | |
d3ce09f5 SS |
940 | de_fault (to_can_run_breakpoint_commands, |
941 | (int (*) (void)) | |
942 | return_zero); | |
d1feda86 YQ |
943 | de_fault (to_use_agent, |
944 | (int (*) (int)) | |
945 | tcomplain); | |
946 | de_fault (to_can_use_agent, | |
947 | (int (*) (void)) | |
948 | return_zero); | |
32231432 PA |
949 | de_fault (to_execution_direction, default_execution_direction); |
950 | ||
c906108c | 951 | #undef de_fault |
c906108c | 952 | |
7998dfc3 AC |
953 | /* Finally, position the target-stack beneath the squashed |
954 | "current_target". That way code looking for a non-inherited | |
955 | target method can quickly and simply find it. */ | |
956 | current_target.beneath = target_stack; | |
b4b61fdb DJ |
957 | |
958 | if (targetdebug) | |
959 | setup_target_debug (); | |
c906108c SS |
960 | } |
961 | ||
962 | /* Push a new target type into the stack of the existing target accessors, | |
963 | possibly superseding some of the existing accessors. | |
964 | ||
c906108c SS |
965 | Rather than allow an empty stack, we always have the dummy target at |
966 | the bottom stratum, so we can call the function vectors without | |
967 | checking them. */ | |
968 | ||
b26a4dcb | 969 | void |
fba45db2 | 970 | push_target (struct target_ops *t) |
c906108c | 971 | { |
258b763a | 972 | struct target_ops **cur; |
c906108c SS |
973 | |
974 | /* Check magic number. If wrong, it probably means someone changed | |
975 | the struct definition, but not all the places that initialize one. */ | |
976 | if (t->to_magic != OPS_MAGIC) | |
977 | { | |
c5aa993b JM |
978 | fprintf_unfiltered (gdb_stderr, |
979 | "Magic number of %s target struct wrong\n", | |
980 | t->to_shortname); | |
3e43a32a MS |
981 | internal_error (__FILE__, __LINE__, |
982 | _("failed internal consistency check")); | |
c906108c SS |
983 | } |
984 | ||
258b763a AC |
985 | /* Find the proper stratum to install this target in. */ |
986 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
c906108c | 987 | { |
258b763a | 988 | if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum) |
c906108c SS |
989 | break; |
990 | } | |
991 | ||
258b763a | 992 | /* If there's already targets at this stratum, remove them. */ |
88c231eb | 993 | /* FIXME: cagney/2003-10-15: I think this should be popping all |
258b763a AC |
994 | targets to CUR, and not just those at this stratum level. */ |
995 | while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum) | |
996 | { | |
997 | /* There's already something at this stratum level. Close it, | |
998 | and un-hook it from the stack. */ | |
999 | struct target_ops *tmp = (*cur); | |
5d502164 | 1000 | |
258b763a AC |
1001 | (*cur) = (*cur)->beneath; |
1002 | tmp->beneath = NULL; | |
f1c07ab0 | 1003 | target_close (tmp, 0); |
258b763a | 1004 | } |
c906108c SS |
1005 | |
1006 | /* We have removed all targets in our stratum, now add the new one. */ | |
258b763a AC |
1007 | t->beneath = (*cur); |
1008 | (*cur) = t; | |
c906108c SS |
1009 | |
1010 | update_current_target (); | |
c906108c SS |
1011 | } |
1012 | ||
2bc416ba | 1013 | /* Remove a target_ops vector from the stack, wherever it may be. |
c906108c SS |
1014 | Return how many times it was removed (0 or 1). */ |
1015 | ||
1016 | int | |
fba45db2 | 1017 | unpush_target (struct target_ops *t) |
c906108c | 1018 | { |
258b763a AC |
1019 | struct target_ops **cur; |
1020 | struct target_ops *tmp; | |
c906108c | 1021 | |
c8d104ad PA |
1022 | if (t->to_stratum == dummy_stratum) |
1023 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 1024 | _("Attempt to unpush the dummy target")); |
c8d104ad | 1025 | |
c906108c | 1026 | /* Look for the specified target. Note that we assume that a target |
c378eb4e | 1027 | can only occur once in the target stack. */ |
c906108c | 1028 | |
258b763a AC |
1029 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) |
1030 | { | |
1031 | if ((*cur) == t) | |
1032 | break; | |
1033 | } | |
c906108c | 1034 | |
305436e0 PA |
1035 | /* If we don't find target_ops, quit. Only open targets should be |
1036 | closed. */ | |
258b763a | 1037 | if ((*cur) == NULL) |
305436e0 | 1038 | return 0; |
5269965e | 1039 | |
c378eb4e | 1040 | /* Unchain the target. */ |
258b763a AC |
1041 | tmp = (*cur); |
1042 | (*cur) = (*cur)->beneath; | |
1043 | tmp->beneath = NULL; | |
c906108c SS |
1044 | |
1045 | update_current_target (); | |
c906108c | 1046 | |
305436e0 PA |
1047 | /* Finally close the target. Note we do this after unchaining, so |
1048 | any target method calls from within the target_close | |
1049 | implementation don't end up in T anymore. */ | |
1050 | target_close (t, 0); | |
1051 | ||
c906108c SS |
1052 | return 1; |
1053 | } | |
1054 | ||
1055 | void | |
fba45db2 | 1056 | pop_target (void) |
c906108c | 1057 | { |
c378eb4e | 1058 | target_close (target_stack, 0); /* Let it clean up. */ |
258b763a | 1059 | if (unpush_target (target_stack) == 1) |
c906108c SS |
1060 | return; |
1061 | ||
c5aa993b JM |
1062 | fprintf_unfiltered (gdb_stderr, |
1063 | "pop_target couldn't find target %s\n", | |
1064 | current_target.to_shortname); | |
5d502164 MS |
1065 | internal_error (__FILE__, __LINE__, |
1066 | _("failed internal consistency check")); | |
c906108c SS |
1067 | } |
1068 | ||
aa76d38d | 1069 | void |
87ab71f0 | 1070 | pop_all_targets_above (enum strata above_stratum, int quitting) |
aa76d38d | 1071 | { |
87ab71f0 | 1072 | while ((int) (current_target.to_stratum) > (int) above_stratum) |
aa76d38d | 1073 | { |
b52323fa | 1074 | target_close (target_stack, quitting); |
aa76d38d PA |
1075 | if (!unpush_target (target_stack)) |
1076 | { | |
1077 | fprintf_unfiltered (gdb_stderr, | |
1078 | "pop_all_targets couldn't find target %s\n", | |
b52323fa | 1079 | target_stack->to_shortname); |
aa76d38d PA |
1080 | internal_error (__FILE__, __LINE__, |
1081 | _("failed internal consistency check")); | |
1082 | break; | |
1083 | } | |
1084 | } | |
1085 | } | |
1086 | ||
87ab71f0 PA |
1087 | void |
1088 | pop_all_targets (int quitting) | |
1089 | { | |
1090 | pop_all_targets_above (dummy_stratum, quitting); | |
1091 | } | |
1092 | ||
c0edd9ed JK |
1093 | /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */ |
1094 | ||
1095 | int | |
1096 | target_is_pushed (struct target_ops *t) | |
1097 | { | |
1098 | struct target_ops **cur; | |
1099 | ||
1100 | /* Check magic number. If wrong, it probably means someone changed | |
1101 | the struct definition, but not all the places that initialize one. */ | |
1102 | if (t->to_magic != OPS_MAGIC) | |
1103 | { | |
1104 | fprintf_unfiltered (gdb_stderr, | |
1105 | "Magic number of %s target struct wrong\n", | |
1106 | t->to_shortname); | |
3e43a32a MS |
1107 | internal_error (__FILE__, __LINE__, |
1108 | _("failed internal consistency check")); | |
c0edd9ed JK |
1109 | } |
1110 | ||
1111 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
1112 | if (*cur == t) | |
1113 | return 1; | |
1114 | ||
1115 | return 0; | |
1116 | } | |
1117 | ||
72f5cf0e | 1118 | /* Using the objfile specified in OBJFILE, find the address for the |
9e35dae4 DJ |
1119 | current thread's thread-local storage with offset OFFSET. */ |
1120 | CORE_ADDR | |
1121 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) | |
1122 | { | |
1123 | volatile CORE_ADDR addr = 0; | |
117de6a9 PA |
1124 | struct target_ops *target; |
1125 | ||
1126 | for (target = current_target.beneath; | |
1127 | target != NULL; | |
1128 | target = target->beneath) | |
1129 | { | |
1130 | if (target->to_get_thread_local_address != NULL) | |
1131 | break; | |
1132 | } | |
9e35dae4 | 1133 | |
117de6a9 | 1134 | if (target != NULL |
f5656ead | 1135 | && gdbarch_fetch_tls_load_module_address_p (target_gdbarch ())) |
9e35dae4 DJ |
1136 | { |
1137 | ptid_t ptid = inferior_ptid; | |
1138 | volatile struct gdb_exception ex; | |
1139 | ||
1140 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
1141 | { | |
1142 | CORE_ADDR lm_addr; | |
1143 | ||
1144 | /* Fetch the load module address for this objfile. */ | |
f5656ead | 1145 | lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch (), |
9e35dae4 DJ |
1146 | objfile); |
1147 | /* If it's 0, throw the appropriate exception. */ | |
1148 | if (lm_addr == 0) | |
1149 | throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR, | |
1150 | _("TLS load module not found")); | |
1151 | ||
3e43a32a MS |
1152 | addr = target->to_get_thread_local_address (target, ptid, |
1153 | lm_addr, offset); | |
9e35dae4 DJ |
1154 | } |
1155 | /* If an error occurred, print TLS related messages here. Otherwise, | |
1156 | throw the error to some higher catcher. */ | |
1157 | if (ex.reason < 0) | |
1158 | { | |
1159 | int objfile_is_library = (objfile->flags & OBJF_SHARED); | |
1160 | ||
1161 | switch (ex.error) | |
1162 | { | |
1163 | case TLS_NO_LIBRARY_SUPPORT_ERROR: | |
3e43a32a MS |
1164 | error (_("Cannot find thread-local variables " |
1165 | "in this thread library.")); | |
9e35dae4 DJ |
1166 | break; |
1167 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: | |
1168 | if (objfile_is_library) | |
1169 | error (_("Cannot find shared library `%s' in dynamic" | |
1170 | " linker's load module list"), objfile->name); | |
1171 | else | |
1172 | error (_("Cannot find executable file `%s' in dynamic" | |
1173 | " linker's load module list"), objfile->name); | |
1174 | break; | |
1175 | case TLS_NOT_ALLOCATED_YET_ERROR: | |
1176 | if (objfile_is_library) | |
1177 | error (_("The inferior has not yet allocated storage for" | |
1178 | " thread-local variables in\n" | |
1179 | "the shared library `%s'\n" | |
1180 | "for %s"), | |
1181 | objfile->name, target_pid_to_str (ptid)); | |
1182 | else | |
1183 | error (_("The inferior has not yet allocated storage for" | |
1184 | " thread-local variables in\n" | |
1185 | "the executable `%s'\n" | |
1186 | "for %s"), | |
1187 | objfile->name, target_pid_to_str (ptid)); | |
1188 | break; | |
1189 | case TLS_GENERIC_ERROR: | |
1190 | if (objfile_is_library) | |
1191 | error (_("Cannot find thread-local storage for %s, " | |
1192 | "shared library %s:\n%s"), | |
1193 | target_pid_to_str (ptid), | |
1194 | objfile->name, ex.message); | |
1195 | else | |
1196 | error (_("Cannot find thread-local storage for %s, " | |
1197 | "executable file %s:\n%s"), | |
1198 | target_pid_to_str (ptid), | |
1199 | objfile->name, ex.message); | |
1200 | break; | |
1201 | default: | |
1202 | throw_exception (ex); | |
1203 | break; | |
1204 | } | |
1205 | } | |
1206 | } | |
1207 | /* It wouldn't be wrong here to try a gdbarch method, too; finding | |
1208 | TLS is an ABI-specific thing. But we don't do that yet. */ | |
1209 | else | |
1210 | error (_("Cannot find thread-local variables on this target")); | |
1211 | ||
1212 | return addr; | |
1213 | } | |
1214 | ||
c906108c SS |
1215 | #undef MIN |
1216 | #define MIN(A, B) (((A) <= (B)) ? (A) : (B)) | |
1217 | ||
1218 | /* target_read_string -- read a null terminated string, up to LEN bytes, | |
1219 | from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful. | |
1220 | Set *STRING to a pointer to malloc'd memory containing the data; the caller | |
1221 | is responsible for freeing it. Return the number of bytes successfully | |
1222 | read. */ | |
1223 | ||
1224 | int | |
fba45db2 | 1225 | target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop) |
c906108c | 1226 | { |
c2e8b827 | 1227 | int tlen, offset, i; |
1b0ba102 | 1228 | gdb_byte buf[4]; |
c906108c SS |
1229 | int errcode = 0; |
1230 | char *buffer; | |
1231 | int buffer_allocated; | |
1232 | char *bufptr; | |
1233 | unsigned int nbytes_read = 0; | |
1234 | ||
6217bf3e MS |
1235 | gdb_assert (string); |
1236 | ||
c906108c SS |
1237 | /* Small for testing. */ |
1238 | buffer_allocated = 4; | |
1239 | buffer = xmalloc (buffer_allocated); | |
1240 | bufptr = buffer; | |
1241 | ||
c906108c SS |
1242 | while (len > 0) |
1243 | { | |
1244 | tlen = MIN (len, 4 - (memaddr & 3)); | |
1245 | offset = memaddr & 3; | |
1246 | ||
1b0ba102 | 1247 | errcode = target_read_memory (memaddr & ~3, buf, sizeof buf); |
c906108c SS |
1248 | if (errcode != 0) |
1249 | { | |
1250 | /* The transfer request might have crossed the boundary to an | |
c378eb4e | 1251 | unallocated region of memory. Retry the transfer, requesting |
c906108c SS |
1252 | a single byte. */ |
1253 | tlen = 1; | |
1254 | offset = 0; | |
b8eb5af0 | 1255 | errcode = target_read_memory (memaddr, buf, 1); |
c906108c SS |
1256 | if (errcode != 0) |
1257 | goto done; | |
1258 | } | |
1259 | ||
1260 | if (bufptr - buffer + tlen > buffer_allocated) | |
1261 | { | |
1262 | unsigned int bytes; | |
5d502164 | 1263 | |
c906108c SS |
1264 | bytes = bufptr - buffer; |
1265 | buffer_allocated *= 2; | |
1266 | buffer = xrealloc (buffer, buffer_allocated); | |
1267 | bufptr = buffer + bytes; | |
1268 | } | |
1269 | ||
1270 | for (i = 0; i < tlen; i++) | |
1271 | { | |
1272 | *bufptr++ = buf[i + offset]; | |
1273 | if (buf[i + offset] == '\000') | |
1274 | { | |
1275 | nbytes_read += i + 1; | |
1276 | goto done; | |
1277 | } | |
1278 | } | |
1279 | ||
1280 | memaddr += tlen; | |
1281 | len -= tlen; | |
1282 | nbytes_read += tlen; | |
1283 | } | |
c5aa993b | 1284 | done: |
6217bf3e | 1285 | *string = buffer; |
c906108c SS |
1286 | if (errnop != NULL) |
1287 | *errnop = errcode; | |
c906108c SS |
1288 | return nbytes_read; |
1289 | } | |
1290 | ||
07b82ea5 PA |
1291 | struct target_section_table * |
1292 | target_get_section_table (struct target_ops *target) | |
1293 | { | |
1294 | struct target_ops *t; | |
1295 | ||
1296 | if (targetdebug) | |
1297 | fprintf_unfiltered (gdb_stdlog, "target_get_section_table ()\n"); | |
1298 | ||
1299 | for (t = target; t != NULL; t = t->beneath) | |
1300 | if (t->to_get_section_table != NULL) | |
1301 | return (*t->to_get_section_table) (t); | |
1302 | ||
1303 | return NULL; | |
1304 | } | |
1305 | ||
8db32d44 | 1306 | /* Find a section containing ADDR. */ |
07b82ea5 | 1307 | |
0542c86d | 1308 | struct target_section * |
8db32d44 AC |
1309 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
1310 | { | |
07b82ea5 | 1311 | struct target_section_table *table = target_get_section_table (target); |
0542c86d | 1312 | struct target_section *secp; |
07b82ea5 PA |
1313 | |
1314 | if (table == NULL) | |
1315 | return NULL; | |
1316 | ||
1317 | for (secp = table->sections; secp < table->sections_end; secp++) | |
8db32d44 AC |
1318 | { |
1319 | if (addr >= secp->addr && addr < secp->endaddr) | |
1320 | return secp; | |
1321 | } | |
1322 | return NULL; | |
1323 | } | |
1324 | ||
e6e4e701 PA |
1325 | /* Read memory from the live target, even if currently inspecting a |
1326 | traceframe. The return is the same as that of target_read. */ | |
1327 | ||
1328 | static LONGEST | |
1329 | target_read_live_memory (enum target_object object, | |
1330 | ULONGEST memaddr, gdb_byte *myaddr, LONGEST len) | |
1331 | { | |
1332 | int ret; | |
1333 | struct cleanup *cleanup; | |
1334 | ||
1335 | /* Switch momentarily out of tfind mode so to access live memory. | |
1336 | Note that this must not clear global state, such as the frame | |
1337 | cache, which must still remain valid for the previous traceframe. | |
1338 | We may be _building_ the frame cache at this point. */ | |
1339 | cleanup = make_cleanup_restore_traceframe_number (); | |
1340 | set_traceframe_number (-1); | |
1341 | ||
1342 | ret = target_read (current_target.beneath, object, NULL, | |
1343 | myaddr, memaddr, len); | |
1344 | ||
1345 | do_cleanups (cleanup); | |
1346 | return ret; | |
1347 | } | |
1348 | ||
1349 | /* Using the set of read-only target sections of OPS, read live | |
1350 | read-only memory. Note that the actual reads start from the | |
5657161f PA |
1351 | top-most target again. |
1352 | ||
1353 | For interface/parameters/return description see target.h, | |
1354 | to_xfer_partial. */ | |
e6e4e701 PA |
1355 | |
1356 | static LONGEST | |
1357 | memory_xfer_live_readonly_partial (struct target_ops *ops, | |
1358 | enum target_object object, | |
1359 | gdb_byte *readbuf, ULONGEST memaddr, | |
1360 | LONGEST len) | |
1361 | { | |
1362 | struct target_section *secp; | |
1363 | struct target_section_table *table; | |
1364 | ||
1365 | secp = target_section_by_addr (ops, memaddr); | |
1366 | if (secp != NULL | |
1367 | && (bfd_get_section_flags (secp->bfd, secp->the_bfd_section) | |
1368 | & SEC_READONLY)) | |
1369 | { | |
1370 | struct target_section *p; | |
1371 | ULONGEST memend = memaddr + len; | |
1372 | ||
1373 | table = target_get_section_table (ops); | |
1374 | ||
1375 | for (p = table->sections; p < table->sections_end; p++) | |
1376 | { | |
1377 | if (memaddr >= p->addr) | |
1378 | { | |
1379 | if (memend <= p->endaddr) | |
1380 | { | |
1381 | /* Entire transfer is within this section. */ | |
1382 | return target_read_live_memory (object, memaddr, | |
1383 | readbuf, len); | |
1384 | } | |
1385 | else if (memaddr >= p->endaddr) | |
1386 | { | |
1387 | /* This section ends before the transfer starts. */ | |
1388 | continue; | |
1389 | } | |
1390 | else | |
1391 | { | |
1392 | /* This section overlaps the transfer. Just do half. */ | |
1393 | len = p->endaddr - memaddr; | |
1394 | return target_read_live_memory (object, memaddr, | |
1395 | readbuf, len); | |
1396 | } | |
1397 | } | |
1398 | } | |
1399 | } | |
1400 | ||
1401 | return 0; | |
1402 | } | |
1403 | ||
7f79c47e DE |
1404 | /* Perform a partial memory transfer. |
1405 | For docs see target.h, to_xfer_partial. */ | |
cf7a04e8 DJ |
1406 | |
1407 | static LONGEST | |
f0ba3972 PA |
1408 | memory_xfer_partial_1 (struct target_ops *ops, enum target_object object, |
1409 | void *readbuf, const void *writebuf, ULONGEST memaddr, | |
1410 | LONGEST len) | |
0779438d | 1411 | { |
cf7a04e8 DJ |
1412 | LONGEST res; |
1413 | int reg_len; | |
1414 | struct mem_region *region; | |
4e5d721f | 1415 | struct inferior *inf; |
cf7a04e8 | 1416 | |
07b82ea5 PA |
1417 | /* For accesses to unmapped overlay sections, read directly from |
1418 | files. Must do this first, as MEMADDR may need adjustment. */ | |
1419 | if (readbuf != NULL && overlay_debugging) | |
1420 | { | |
1421 | struct obj_section *section = find_pc_overlay (memaddr); | |
5d502164 | 1422 | |
07b82ea5 PA |
1423 | if (pc_in_unmapped_range (memaddr, section)) |
1424 | { | |
1425 | struct target_section_table *table | |
1426 | = target_get_section_table (ops); | |
1427 | const char *section_name = section->the_bfd_section->name; | |
5d502164 | 1428 | |
07b82ea5 PA |
1429 | memaddr = overlay_mapped_address (memaddr, section); |
1430 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
1431 | memaddr, len, | |
1432 | table->sections, | |
1433 | table->sections_end, | |
1434 | section_name); | |
1435 | } | |
1436 | } | |
1437 | ||
1438 | /* Try the executable files, if "trust-readonly-sections" is set. */ | |
cf7a04e8 DJ |
1439 | if (readbuf != NULL && trust_readonly) |
1440 | { | |
0542c86d | 1441 | struct target_section *secp; |
07b82ea5 | 1442 | struct target_section_table *table; |
cf7a04e8 DJ |
1443 | |
1444 | secp = target_section_by_addr (ops, memaddr); | |
1445 | if (secp != NULL | |
1446 | && (bfd_get_section_flags (secp->bfd, secp->the_bfd_section) | |
1447 | & SEC_READONLY)) | |
07b82ea5 PA |
1448 | { |
1449 | table = target_get_section_table (ops); | |
1450 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
1451 | memaddr, len, | |
1452 | table->sections, | |
1453 | table->sections_end, | |
1454 | NULL); | |
1455 | } | |
98646950 UW |
1456 | } |
1457 | ||
e6e4e701 PA |
1458 | /* If reading unavailable memory in the context of traceframes, and |
1459 | this address falls within a read-only section, fallback to | |
1460 | reading from live memory. */ | |
1461 | if (readbuf != NULL && get_traceframe_number () != -1) | |
1462 | { | |
1463 | VEC(mem_range_s) *available; | |
1464 | ||
1465 | /* If we fail to get the set of available memory, then the | |
1466 | target does not support querying traceframe info, and so we | |
1467 | attempt reading from the traceframe anyway (assuming the | |
1468 | target implements the old QTro packet then). */ | |
1469 | if (traceframe_available_memory (&available, memaddr, len)) | |
1470 | { | |
1471 | struct cleanup *old_chain; | |
1472 | ||
1473 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available); | |
1474 | ||
1475 | if (VEC_empty (mem_range_s, available) | |
1476 | || VEC_index (mem_range_s, available, 0)->start != memaddr) | |
1477 | { | |
1478 | /* Don't read into the traceframe's available | |
1479 | memory. */ | |
1480 | if (!VEC_empty (mem_range_s, available)) | |
1481 | { | |
1482 | LONGEST oldlen = len; | |
1483 | ||
1484 | len = VEC_index (mem_range_s, available, 0)->start - memaddr; | |
1485 | gdb_assert (len <= oldlen); | |
1486 | } | |
1487 | ||
1488 | do_cleanups (old_chain); | |
1489 | ||
1490 | /* This goes through the topmost target again. */ | |
1491 | res = memory_xfer_live_readonly_partial (ops, object, | |
1492 | readbuf, memaddr, len); | |
1493 | if (res > 0) | |
1494 | return res; | |
1495 | ||
1496 | /* No use trying further, we know some memory starting | |
1497 | at MEMADDR isn't available. */ | |
1498 | return -1; | |
1499 | } | |
1500 | ||
1501 | /* Don't try to read more than how much is available, in | |
1502 | case the target implements the deprecated QTro packet to | |
1503 | cater for older GDBs (the target's knowledge of read-only | |
1504 | sections may be outdated by now). */ | |
1505 | len = VEC_index (mem_range_s, available, 0)->length; | |
1506 | ||
1507 | do_cleanups (old_chain); | |
1508 | } | |
1509 | } | |
1510 | ||
cf7a04e8 DJ |
1511 | /* Try GDB's internal data cache. */ |
1512 | region = lookup_mem_region (memaddr); | |
4b5752d0 VP |
1513 | /* region->hi == 0 means there's no upper bound. */ |
1514 | if (memaddr + len < region->hi || region->hi == 0) | |
cf7a04e8 DJ |
1515 | reg_len = len; |
1516 | else | |
1517 | reg_len = region->hi - memaddr; | |
1518 | ||
1519 | switch (region->attrib.mode) | |
1520 | { | |
1521 | case MEM_RO: | |
1522 | if (writebuf != NULL) | |
1523 | return -1; | |
1524 | break; | |
1525 | ||
1526 | case MEM_WO: | |
1527 | if (readbuf != NULL) | |
1528 | return -1; | |
1529 | break; | |
a76d924d DJ |
1530 | |
1531 | case MEM_FLASH: | |
1532 | /* We only support writing to flash during "load" for now. */ | |
1533 | if (writebuf != NULL) | |
1534 | error (_("Writing to flash memory forbidden in this context")); | |
1535 | break; | |
4b5752d0 VP |
1536 | |
1537 | case MEM_NONE: | |
1538 | return -1; | |
cf7a04e8 DJ |
1539 | } |
1540 | ||
6c95b8df PA |
1541 | if (!ptid_equal (inferior_ptid, null_ptid)) |
1542 | inf = find_inferior_pid (ptid_get_pid (inferior_ptid)); | |
1543 | else | |
1544 | inf = NULL; | |
4e5d721f DE |
1545 | |
1546 | if (inf != NULL | |
2f4d8875 PA |
1547 | /* The dcache reads whole cache lines; that doesn't play well |
1548 | with reading from a trace buffer, because reading outside of | |
1549 | the collected memory range fails. */ | |
1550 | && get_traceframe_number () == -1 | |
4e5d721f DE |
1551 | && (region->attrib.cache |
1552 | || (stack_cache_enabled_p && object == TARGET_OBJECT_STACK_MEMORY))) | |
cf7a04e8 | 1553 | { |
cf7a04e8 | 1554 | if (readbuf != NULL) |
25f122dc | 1555 | res = dcache_xfer_memory (ops, target_dcache, memaddr, readbuf, |
cf7a04e8 DJ |
1556 | reg_len, 0); |
1557 | else | |
1558 | /* FIXME drow/2006-08-09: If we're going to preserve const | |
1559 | correctness dcache_xfer_memory should take readbuf and | |
1560 | writebuf. */ | |
25f122dc | 1561 | res = dcache_xfer_memory (ops, target_dcache, memaddr, |
cf7a04e8 DJ |
1562 | (void *) writebuf, |
1563 | reg_len, 1); | |
1564 | if (res <= 0) | |
1565 | return -1; | |
1566 | else | |
f0ba3972 | 1567 | return res; |
cf7a04e8 DJ |
1568 | } |
1569 | ||
1570 | /* If none of those methods found the memory we wanted, fall back | |
1571 | to a target partial transfer. Normally a single call to | |
1572 | to_xfer_partial is enough; if it doesn't recognize an object | |
1573 | it will call the to_xfer_partial of the next target down. | |
1574 | But for memory this won't do. Memory is the only target | |
1575 | object which can be read from more than one valid target. | |
1576 | A core file, for instance, could have some of memory but | |
1577 | delegate other bits to the target below it. So, we must | |
1578 | manually try all targets. */ | |
1579 | ||
1580 | do | |
1581 | { | |
1582 | res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
4b5752d0 | 1583 | readbuf, writebuf, memaddr, reg_len); |
cf7a04e8 | 1584 | if (res > 0) |
8defab1a | 1585 | break; |
cf7a04e8 | 1586 | |
5ad3a4ca DJ |
1587 | /* We want to continue past core files to executables, but not |
1588 | past a running target's memory. */ | |
c35b1492 | 1589 | if (ops->to_has_all_memory (ops)) |
8defab1a | 1590 | break; |
5ad3a4ca | 1591 | |
cf7a04e8 DJ |
1592 | ops = ops->beneath; |
1593 | } | |
1594 | while (ops != NULL); | |
1595 | ||
41dcd03f DE |
1596 | /* Make sure the cache gets updated no matter what - if we are writing |
1597 | to the stack. Even if this write is not tagged as such, we still need | |
1598 | to update the cache. */ | |
1599 | ||
1600 | if (res > 0 | |
1601 | && inf != NULL | |
1602 | && writebuf != NULL | |
1603 | && !region->attrib.cache | |
1604 | && stack_cache_enabled_p | |
1605 | && object != TARGET_OBJECT_STACK_MEMORY) | |
1606 | { | |
7d4f32d3 | 1607 | dcache_update (target_dcache, memaddr, (void *) writebuf, res); |
41dcd03f DE |
1608 | } |
1609 | ||
cf7a04e8 DJ |
1610 | /* If we still haven't got anything, return the last error. We |
1611 | give up. */ | |
1612 | return res; | |
0779438d AC |
1613 | } |
1614 | ||
f0ba3972 PA |
1615 | /* Perform a partial memory transfer. For docs see target.h, |
1616 | to_xfer_partial. */ | |
1617 | ||
1618 | static LONGEST | |
1619 | memory_xfer_partial (struct target_ops *ops, enum target_object object, | |
1620 | void *readbuf, const void *writebuf, ULONGEST memaddr, | |
1621 | LONGEST len) | |
1622 | { | |
1623 | int res; | |
1624 | ||
1625 | /* Zero length requests are ok and require no work. */ | |
1626 | if (len == 0) | |
1627 | return 0; | |
1628 | ||
1629 | /* Fill in READBUF with breakpoint shadows, or WRITEBUF with | |
1630 | breakpoint insns, thus hiding out from higher layers whether | |
1631 | there are software breakpoints inserted in the code stream. */ | |
1632 | if (readbuf != NULL) | |
1633 | { | |
1634 | res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len); | |
1635 | ||
1636 | if (res > 0 && !show_memory_breakpoints) | |
1637 | breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, res); | |
1638 | } | |
1639 | else | |
1640 | { | |
1641 | void *buf; | |
1642 | struct cleanup *old_chain; | |
1643 | ||
1644 | buf = xmalloc (len); | |
1645 | old_chain = make_cleanup (xfree, buf); | |
1646 | memcpy (buf, writebuf, len); | |
1647 | ||
1648 | breakpoint_xfer_memory (NULL, buf, writebuf, memaddr, len); | |
1649 | res = memory_xfer_partial_1 (ops, object, NULL, buf, memaddr, len); | |
1650 | ||
1651 | do_cleanups (old_chain); | |
1652 | } | |
1653 | ||
1654 | return res; | |
1655 | } | |
1656 | ||
8defab1a DJ |
1657 | static void |
1658 | restore_show_memory_breakpoints (void *arg) | |
1659 | { | |
1660 | show_memory_breakpoints = (uintptr_t) arg; | |
1661 | } | |
1662 | ||
1663 | struct cleanup * | |
1664 | make_show_memory_breakpoints_cleanup (int show) | |
1665 | { | |
1666 | int current = show_memory_breakpoints; | |
8defab1a | 1667 | |
5d502164 | 1668 | show_memory_breakpoints = show; |
8defab1a DJ |
1669 | return make_cleanup (restore_show_memory_breakpoints, |
1670 | (void *) (uintptr_t) current); | |
1671 | } | |
1672 | ||
7f79c47e DE |
1673 | /* For docs see target.h, to_xfer_partial. */ |
1674 | ||
27394598 AC |
1675 | static LONGEST |
1676 | target_xfer_partial (struct target_ops *ops, | |
1677 | enum target_object object, const char *annex, | |
1678 | void *readbuf, const void *writebuf, | |
1679 | ULONGEST offset, LONGEST len) | |
1680 | { | |
1681 | LONGEST retval; | |
1682 | ||
1683 | gdb_assert (ops->to_xfer_partial != NULL); | |
cf7a04e8 | 1684 | |
d914c394 SS |
1685 | if (writebuf && !may_write_memory) |
1686 | error (_("Writing to memory is not allowed (addr %s, len %s)"), | |
1687 | core_addr_to_string_nz (offset), plongest (len)); | |
1688 | ||
cf7a04e8 DJ |
1689 | /* If this is a memory transfer, let the memory-specific code |
1690 | have a look at it instead. Memory transfers are more | |
1691 | complicated. */ | |
4e5d721f DE |
1692 | if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY) |
1693 | retval = memory_xfer_partial (ops, object, readbuf, | |
1694 | writebuf, offset, len); | |
cf7a04e8 DJ |
1695 | else |
1696 | { | |
1697 | enum target_object raw_object = object; | |
1698 | ||
1699 | /* If this is a raw memory transfer, request the normal | |
1700 | memory object from other layers. */ | |
1701 | if (raw_object == TARGET_OBJECT_RAW_MEMORY) | |
1702 | raw_object = TARGET_OBJECT_MEMORY; | |
1703 | ||
1704 | retval = ops->to_xfer_partial (ops, raw_object, annex, readbuf, | |
1705 | writebuf, offset, len); | |
1706 | } | |
1707 | ||
27394598 AC |
1708 | if (targetdebug) |
1709 | { | |
1710 | const unsigned char *myaddr = NULL; | |
1711 | ||
1712 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
1713 | "%s:target_xfer_partial " |
1714 | "(%d, %s, %s, %s, %s, %s) = %s", | |
27394598 AC |
1715 | ops->to_shortname, |
1716 | (int) object, | |
1717 | (annex ? annex : "(null)"), | |
53b71562 JB |
1718 | host_address_to_string (readbuf), |
1719 | host_address_to_string (writebuf), | |
0b1553bc UW |
1720 | core_addr_to_string_nz (offset), |
1721 | plongest (len), plongest (retval)); | |
27394598 AC |
1722 | |
1723 | if (readbuf) | |
1724 | myaddr = readbuf; | |
1725 | if (writebuf) | |
1726 | myaddr = writebuf; | |
1727 | if (retval > 0 && myaddr != NULL) | |
1728 | { | |
1729 | int i; | |
2bc416ba | 1730 | |
27394598 AC |
1731 | fputs_unfiltered (", bytes =", gdb_stdlog); |
1732 | for (i = 0; i < retval; i++) | |
1733 | { | |
53b71562 | 1734 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1735 | { |
1736 | if (targetdebug < 2 && i > 0) | |
1737 | { | |
1738 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
1739 | break; | |
1740 | } | |
1741 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1742 | } | |
2bc416ba | 1743 | |
27394598 AC |
1744 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
1745 | } | |
1746 | } | |
2bc416ba | 1747 | |
27394598 AC |
1748 | fputc_unfiltered ('\n', gdb_stdlog); |
1749 | } | |
1750 | return retval; | |
1751 | } | |
1752 | ||
c906108c SS |
1753 | /* Read LEN bytes of target memory at address MEMADDR, placing the results in |
1754 | GDB's memory at MYADDR. Returns either 0 for success or an errno value | |
1755 | if any error occurs. | |
1756 | ||
1757 | If an error occurs, no guarantee is made about the contents of the data at | |
1758 | MYADDR. In particular, the caller should not depend upon partial reads | |
1759 | filling the buffer with good data. There is no way for the caller to know | |
1760 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 | 1761 | deal with partial reads should call target_read (which will retry until |
c378eb4e | 1762 | it makes no progress, and then return how much was transferred). */ |
c906108c SS |
1763 | |
1764 | int | |
1b162304 | 1765 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
c906108c | 1766 | { |
c35b1492 PA |
1767 | /* Dispatch to the topmost target, not the flattened current_target. |
1768 | Memory accesses check target->to_has_(all_)memory, and the | |
1769 | flattened target doesn't inherit those. */ | |
1770 | if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1771 | myaddr, memaddr, len) == len) |
1772 | return 0; | |
0779438d | 1773 | else |
cf7a04e8 | 1774 | return EIO; |
c906108c SS |
1775 | } |
1776 | ||
4e5d721f DE |
1777 | /* Like target_read_memory, but specify explicitly that this is a read from |
1778 | the target's stack. This may trigger different cache behavior. */ | |
1779 | ||
1780 | int | |
45aa4659 | 1781 | target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
4e5d721f DE |
1782 | { |
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 | ||
1787 | if (target_read (current_target.beneath, TARGET_OBJECT_STACK_MEMORY, NULL, | |
1788 | myaddr, memaddr, len) == len) | |
1789 | return 0; | |
1790 | else | |
1791 | return EIO; | |
1792 | } | |
1793 | ||
7f79c47e DE |
1794 | /* Write LEN bytes from MYADDR to target memory at address MEMADDR. |
1795 | Returns either 0 for success or an errno value if any error occurs. | |
1796 | If an error occurs, no guarantee is made about how much data got written. | |
1797 | Callers that can deal with partial writes should call target_write. */ | |
1798 | ||
c906108c | 1799 | int |
45aa4659 | 1800 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
c906108c | 1801 | { |
c35b1492 PA |
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_MEMORY, NULL, | |
cf7a04e8 DJ |
1806 | myaddr, memaddr, len) == len) |
1807 | return 0; | |
0779438d | 1808 | else |
cf7a04e8 | 1809 | return EIO; |
c906108c | 1810 | } |
c5aa993b | 1811 | |
f0ba3972 PA |
1812 | /* Write LEN bytes from MYADDR to target raw memory at address |
1813 | MEMADDR. Returns either 0 for success or an errno value if any | |
1814 | error occurs. If an error occurs, no guarantee is made about how | |
1815 | much data got written. Callers that can deal with partial writes | |
1816 | should call target_write. */ | |
1817 | ||
1818 | int | |
45aa4659 | 1819 | target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
f0ba3972 PA |
1820 | { |
1821 | /* Dispatch to the topmost target, not the flattened current_target. | |
1822 | Memory accesses check target->to_has_(all_)memory, and the | |
1823 | flattened target doesn't inherit those. */ | |
1824 | if (target_write (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, | |
1825 | myaddr, memaddr, len) == len) | |
1826 | return 0; | |
1827 | else | |
1828 | return EIO; | |
1829 | } | |
1830 | ||
fd79ecee DJ |
1831 | /* Fetch the target's memory map. */ |
1832 | ||
1833 | VEC(mem_region_s) * | |
1834 | target_memory_map (void) | |
1835 | { | |
1836 | VEC(mem_region_s) *result; | |
1837 | struct mem_region *last_one, *this_one; | |
1838 | int ix; | |
1839 | struct target_ops *t; | |
1840 | ||
1841 | if (targetdebug) | |
1842 | fprintf_unfiltered (gdb_stdlog, "target_memory_map ()\n"); | |
1843 | ||
1844 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1845 | if (t->to_memory_map != NULL) | |
1846 | break; | |
1847 | ||
1848 | if (t == NULL) | |
1849 | return NULL; | |
1850 | ||
1851 | result = t->to_memory_map (t); | |
1852 | if (result == NULL) | |
1853 | return NULL; | |
1854 | ||
1855 | qsort (VEC_address (mem_region_s, result), | |
1856 | VEC_length (mem_region_s, result), | |
1857 | sizeof (struct mem_region), mem_region_cmp); | |
1858 | ||
1859 | /* Check that regions do not overlap. Simultaneously assign | |
1860 | a numbering for the "mem" commands to use to refer to | |
1861 | each region. */ | |
1862 | last_one = NULL; | |
1863 | for (ix = 0; VEC_iterate (mem_region_s, result, ix, this_one); ix++) | |
1864 | { | |
1865 | this_one->number = ix; | |
1866 | ||
1867 | if (last_one && last_one->hi > this_one->lo) | |
1868 | { | |
1869 | warning (_("Overlapping regions in memory map: ignoring")); | |
1870 | VEC_free (mem_region_s, result); | |
1871 | return NULL; | |
1872 | } | |
1873 | last_one = this_one; | |
1874 | } | |
1875 | ||
1876 | return result; | |
1877 | } | |
1878 | ||
a76d924d DJ |
1879 | void |
1880 | target_flash_erase (ULONGEST address, LONGEST length) | |
1881 | { | |
1882 | struct target_ops *t; | |
1883 | ||
1884 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1885 | if (t->to_flash_erase != NULL) | |
5d502164 MS |
1886 | { |
1887 | if (targetdebug) | |
1888 | fprintf_unfiltered (gdb_stdlog, "target_flash_erase (%s, %s)\n", | |
1889 | hex_string (address), phex (length, 0)); | |
1890 | t->to_flash_erase (t, address, length); | |
1891 | return; | |
1892 | } | |
a76d924d DJ |
1893 | |
1894 | tcomplain (); | |
1895 | } | |
1896 | ||
1897 | void | |
1898 | target_flash_done (void) | |
1899 | { | |
1900 | struct target_ops *t; | |
1901 | ||
1902 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1903 | if (t->to_flash_done != NULL) | |
5d502164 MS |
1904 | { |
1905 | if (targetdebug) | |
1906 | fprintf_unfiltered (gdb_stdlog, "target_flash_done\n"); | |
1907 | t->to_flash_done (t); | |
1908 | return; | |
1909 | } | |
a76d924d DJ |
1910 | |
1911 | tcomplain (); | |
1912 | } | |
1913 | ||
920d2a44 AC |
1914 | static void |
1915 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1916 | struct cmd_list_element *c, const char *value) | |
1917 | { | |
3e43a32a MS |
1918 | fprintf_filtered (file, |
1919 | _("Mode for reading from readonly sections is %s.\n"), | |
920d2a44 AC |
1920 | value); |
1921 | } | |
3a11626d | 1922 | |
1e3ff5ad AC |
1923 | /* More generic transfers. */ |
1924 | ||
0088c768 | 1925 | static LONGEST |
8aa91c1e | 1926 | default_xfer_partial (struct target_ops *ops, enum target_object object, |
2bc416ba | 1927 | const char *annex, gdb_byte *readbuf, |
1b0ba102 | 1928 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) |
0088c768 AC |
1929 | { |
1930 | if (object == TARGET_OBJECT_MEMORY | |
c8e73a31 AC |
1931 | && ops->deprecated_xfer_memory != NULL) |
1932 | /* If available, fall back to the target's | |
1933 | "deprecated_xfer_memory" method. */ | |
0088c768 | 1934 | { |
4b8a223f | 1935 | int xfered = -1; |
5d502164 | 1936 | |
0088c768 | 1937 | errno = 0; |
4b8a223f AC |
1938 | if (writebuf != NULL) |
1939 | { | |
1940 | void *buffer = xmalloc (len); | |
1941 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |
5d502164 | 1942 | |
4b8a223f | 1943 | memcpy (buffer, writebuf, len); |
c8e73a31 AC |
1944 | xfered = ops->deprecated_xfer_memory (offset, buffer, len, |
1945 | 1/*write*/, NULL, ops); | |
4b8a223f AC |
1946 | do_cleanups (cleanup); |
1947 | } | |
1948 | if (readbuf != NULL) | |
244e85c8 MS |
1949 | xfered = ops->deprecated_xfer_memory (offset, readbuf, len, |
1950 | 0/*read*/, NULL, ops); | |
0088c768 AC |
1951 | if (xfered > 0) |
1952 | return xfered; | |
1953 | else if (xfered == 0 && errno == 0) | |
c8e73a31 AC |
1954 | /* "deprecated_xfer_memory" uses 0, cross checked against |
1955 | ERRNO as one indication of an error. */ | |
0088c768 AC |
1956 | return 0; |
1957 | else | |
1958 | return -1; | |
1959 | } | |
1960 | else if (ops->beneath != NULL) | |
cf7a04e8 DJ |
1961 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, |
1962 | readbuf, writebuf, offset, len); | |
1963 | else | |
1964 | return -1; | |
1965 | } | |
1966 | ||
1967 | /* The xfer_partial handler for the topmost target. Unlike the default, | |
1968 | it does not need to handle memory specially; it just passes all | |
1969 | requests down the stack. */ | |
1970 | ||
1971 | static LONGEST | |
1972 | current_xfer_partial (struct target_ops *ops, enum target_object object, | |
1973 | const char *annex, gdb_byte *readbuf, | |
1974 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1975 | { | |
1976 | if (ops->beneath != NULL) | |
1977 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, | |
1978 | readbuf, writebuf, offset, len); | |
0088c768 AC |
1979 | else |
1980 | return -1; | |
1981 | } | |
1982 | ||
7f79c47e | 1983 | /* Target vector read/write partial wrapper functions. */ |
0088c768 | 1984 | |
13547ab6 | 1985 | static LONGEST |
1e3ff5ad AC |
1986 | target_read_partial (struct target_ops *ops, |
1987 | enum target_object object, | |
1b0ba102 | 1988 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1989 | ULONGEST offset, LONGEST len) |
1990 | { | |
27394598 | 1991 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len); |
1e3ff5ad AC |
1992 | } |
1993 | ||
13547ab6 | 1994 | static LONGEST |
1e3ff5ad AC |
1995 | target_write_partial (struct target_ops *ops, |
1996 | enum target_object object, | |
1b0ba102 | 1997 | const char *annex, const gdb_byte *buf, |
1e3ff5ad AC |
1998 | ULONGEST offset, LONGEST len) |
1999 | { | |
27394598 | 2000 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len); |
1e3ff5ad AC |
2001 | } |
2002 | ||
2003 | /* Wrappers to perform the full transfer. */ | |
7f79c47e DE |
2004 | |
2005 | /* For docs on target_read see target.h. */ | |
2006 | ||
1e3ff5ad AC |
2007 | LONGEST |
2008 | target_read (struct target_ops *ops, | |
2009 | enum target_object object, | |
1b0ba102 | 2010 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
2011 | ULONGEST offset, LONGEST len) |
2012 | { | |
2013 | LONGEST xfered = 0; | |
5d502164 | 2014 | |
1e3ff5ad AC |
2015 | while (xfered < len) |
2016 | { | |
0088c768 | 2017 | LONGEST xfer = target_read_partial (ops, object, annex, |
fc1a4b47 | 2018 | (gdb_byte *) buf + xfered, |
0088c768 | 2019 | offset + xfered, len - xfered); |
5d502164 | 2020 | |
1e3ff5ad | 2021 | /* Call an observer, notifying them of the xfer progress? */ |
13547ab6 DJ |
2022 | if (xfer == 0) |
2023 | return xfered; | |
2024 | if (xfer < 0) | |
0088c768 | 2025 | return -1; |
1e3ff5ad AC |
2026 | xfered += xfer; |
2027 | QUIT; | |
2028 | } | |
2029 | return len; | |
2030 | } | |
2031 | ||
f1a507a1 JB |
2032 | /* Assuming that the entire [begin, end) range of memory cannot be |
2033 | read, try to read whatever subrange is possible to read. | |
2034 | ||
2035 | The function returns, in RESULT, either zero or one memory block. | |
2036 | If there's a readable subrange at the beginning, it is completely | |
2037 | read and returned. Any further readable subrange will not be read. | |
2038 | Otherwise, if there's a readable subrange at the end, it will be | |
2039 | completely read and returned. Any readable subranges before it | |
2040 | (obviously, not starting at the beginning), will be ignored. In | |
2041 | other cases -- either no readable subrange, or readable subrange(s) | |
2042 | that is neither at the beginning, or end, nothing is returned. | |
2043 | ||
2044 | The purpose of this function is to handle a read across a boundary | |
2045 | of accessible memory in a case when memory map is not available. | |
2046 | The above restrictions are fine for this case, but will give | |
2047 | incorrect results if the memory is 'patchy'. However, supporting | |
2048 | 'patchy' memory would require trying to read every single byte, | |
2049 | and it seems unacceptable solution. Explicit memory map is | |
2050 | recommended for this case -- and target_read_memory_robust will | |
2051 | take care of reading multiple ranges then. */ | |
8dedea02 VP |
2052 | |
2053 | static void | |
3e43a32a MS |
2054 | read_whatever_is_readable (struct target_ops *ops, |
2055 | ULONGEST begin, ULONGEST end, | |
8dedea02 | 2056 | VEC(memory_read_result_s) **result) |
d5086790 | 2057 | { |
f1a507a1 | 2058 | gdb_byte *buf = xmalloc (end - begin); |
8dedea02 VP |
2059 | ULONGEST current_begin = begin; |
2060 | ULONGEST current_end = end; | |
2061 | int forward; | |
2062 | memory_read_result_s r; | |
2063 | ||
2064 | /* If we previously failed to read 1 byte, nothing can be done here. */ | |
2065 | if (end - begin <= 1) | |
13b3fd9b MS |
2066 | { |
2067 | xfree (buf); | |
2068 | return; | |
2069 | } | |
8dedea02 VP |
2070 | |
2071 | /* Check that either first or the last byte is readable, and give up | |
c378eb4e | 2072 | if not. This heuristic is meant to permit reading accessible memory |
8dedea02 VP |
2073 | at the boundary of accessible region. */ |
2074 | if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
2075 | buf, begin, 1) == 1) | |
2076 | { | |
2077 | forward = 1; | |
2078 | ++current_begin; | |
2079 | } | |
2080 | else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
2081 | buf + (end-begin) - 1, end - 1, 1) == 1) | |
2082 | { | |
2083 | forward = 0; | |
2084 | --current_end; | |
2085 | } | |
2086 | else | |
2087 | { | |
13b3fd9b | 2088 | xfree (buf); |
8dedea02 VP |
2089 | return; |
2090 | } | |
2091 | ||
2092 | /* Loop invariant is that the [current_begin, current_end) was previously | |
2093 | found to be not readable as a whole. | |
2094 | ||
2095 | Note loop condition -- if the range has 1 byte, we can't divide the range | |
2096 | so there's no point trying further. */ | |
2097 | while (current_end - current_begin > 1) | |
2098 | { | |
2099 | ULONGEST first_half_begin, first_half_end; | |
2100 | ULONGEST second_half_begin, second_half_end; | |
2101 | LONGEST xfer; | |
8dedea02 | 2102 | ULONGEST middle = current_begin + (current_end - current_begin)/2; |
f1a507a1 | 2103 | |
8dedea02 VP |
2104 | if (forward) |
2105 | { | |
2106 | first_half_begin = current_begin; | |
2107 | first_half_end = middle; | |
2108 | second_half_begin = middle; | |
2109 | second_half_end = current_end; | |
2110 | } | |
2111 | else | |
2112 | { | |
2113 | first_half_begin = middle; | |
2114 | first_half_end = current_end; | |
2115 | second_half_begin = current_begin; | |
2116 | second_half_end = middle; | |
2117 | } | |
2118 | ||
2119 | xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2120 | buf + (first_half_begin - begin), | |
2121 | first_half_begin, | |
2122 | first_half_end - first_half_begin); | |
2123 | ||
2124 | if (xfer == first_half_end - first_half_begin) | |
2125 | { | |
c378eb4e | 2126 | /* This half reads up fine. So, the error must be in the |
3e43a32a | 2127 | other half. */ |
8dedea02 VP |
2128 | current_begin = second_half_begin; |
2129 | current_end = second_half_end; | |
2130 | } | |
2131 | else | |
2132 | { | |
c378eb4e MS |
2133 | /* This half is not readable. Because we've tried one byte, we |
2134 | know some part of this half if actually redable. Go to the next | |
8dedea02 VP |
2135 | iteration to divide again and try to read. |
2136 | ||
2137 | We don't handle the other half, because this function only tries | |
2138 | to read a single readable subrange. */ | |
2139 | current_begin = first_half_begin; | |
2140 | current_end = first_half_end; | |
2141 | } | |
2142 | } | |
2143 | ||
2144 | if (forward) | |
2145 | { | |
2146 | /* The [begin, current_begin) range has been read. */ | |
2147 | r.begin = begin; | |
2148 | r.end = current_begin; | |
2149 | r.data = buf; | |
2150 | } | |
2151 | else | |
2152 | { | |
2153 | /* The [current_end, end) range has been read. */ | |
2154 | LONGEST rlen = end - current_end; | |
f1a507a1 | 2155 | |
8dedea02 VP |
2156 | r.data = xmalloc (rlen); |
2157 | memcpy (r.data, buf + current_end - begin, rlen); | |
2158 | r.begin = current_end; | |
2159 | r.end = end; | |
2160 | xfree (buf); | |
2161 | } | |
2162 | VEC_safe_push(memory_read_result_s, (*result), &r); | |
2163 | } | |
2164 | ||
2165 | void | |
2166 | free_memory_read_result_vector (void *x) | |
2167 | { | |
2168 | VEC(memory_read_result_s) *v = x; | |
2169 | memory_read_result_s *current; | |
2170 | int ix; | |
2171 | ||
2172 | for (ix = 0; VEC_iterate (memory_read_result_s, v, ix, current); ++ix) | |
2173 | { | |
2174 | xfree (current->data); | |
2175 | } | |
2176 | VEC_free (memory_read_result_s, v); | |
2177 | } | |
2178 | ||
2179 | VEC(memory_read_result_s) * | |
2180 | read_memory_robust (struct target_ops *ops, ULONGEST offset, LONGEST len) | |
2181 | { | |
2182 | VEC(memory_read_result_s) *result = 0; | |
2183 | ||
2184 | LONGEST xfered = 0; | |
d5086790 VP |
2185 | while (xfered < len) |
2186 | { | |
8dedea02 VP |
2187 | struct mem_region *region = lookup_mem_region (offset + xfered); |
2188 | LONGEST rlen; | |
5d502164 | 2189 | |
8dedea02 VP |
2190 | /* If there is no explicit region, a fake one should be created. */ |
2191 | gdb_assert (region); | |
2192 | ||
2193 | if (region->hi == 0) | |
2194 | rlen = len - xfered; | |
2195 | else | |
2196 | rlen = region->hi - offset; | |
2197 | ||
2198 | if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO) | |
d5086790 | 2199 | { |
c378eb4e | 2200 | /* Cannot read this region. Note that we can end up here only |
8dedea02 VP |
2201 | if the region is explicitly marked inaccessible, or |
2202 | 'inaccessible-by-default' is in effect. */ | |
2203 | xfered += rlen; | |
2204 | } | |
2205 | else | |
2206 | { | |
2207 | LONGEST to_read = min (len - xfered, rlen); | |
2208 | gdb_byte *buffer = (gdb_byte *)xmalloc (to_read); | |
2209 | ||
2210 | LONGEST xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2211 | (gdb_byte *) buffer, | |
2212 | offset + xfered, to_read); | |
2213 | /* Call an observer, notifying them of the xfer progress? */ | |
d5086790 | 2214 | if (xfer <= 0) |
d5086790 | 2215 | { |
c378eb4e | 2216 | /* Got an error reading full chunk. See if maybe we can read |
8dedea02 VP |
2217 | some subrange. */ |
2218 | xfree (buffer); | |
3e43a32a MS |
2219 | read_whatever_is_readable (ops, offset + xfered, |
2220 | offset + xfered + to_read, &result); | |
8dedea02 | 2221 | xfered += to_read; |
d5086790 | 2222 | } |
8dedea02 VP |
2223 | else |
2224 | { | |
2225 | struct memory_read_result r; | |
2226 | r.data = buffer; | |
2227 | r.begin = offset + xfered; | |
2228 | r.end = r.begin + xfer; | |
2229 | VEC_safe_push (memory_read_result_s, result, &r); | |
2230 | xfered += xfer; | |
2231 | } | |
2232 | QUIT; | |
d5086790 | 2233 | } |
d5086790 | 2234 | } |
8dedea02 | 2235 | return result; |
d5086790 VP |
2236 | } |
2237 | ||
8dedea02 | 2238 | |
cf7a04e8 DJ |
2239 | /* An alternative to target_write with progress callbacks. */ |
2240 | ||
1e3ff5ad | 2241 | LONGEST |
cf7a04e8 DJ |
2242 | target_write_with_progress (struct target_ops *ops, |
2243 | enum target_object object, | |
2244 | const char *annex, const gdb_byte *buf, | |
2245 | ULONGEST offset, LONGEST len, | |
2246 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad AC |
2247 | { |
2248 | LONGEST xfered = 0; | |
a76d924d DJ |
2249 | |
2250 | /* Give the progress callback a chance to set up. */ | |
2251 | if (progress) | |
2252 | (*progress) (0, baton); | |
2253 | ||
1e3ff5ad AC |
2254 | while (xfered < len) |
2255 | { | |
2256 | LONGEST xfer = target_write_partial (ops, object, annex, | |
fc1a4b47 | 2257 | (gdb_byte *) buf + xfered, |
1e3ff5ad | 2258 | offset + xfered, len - xfered); |
cf7a04e8 | 2259 | |
13547ab6 DJ |
2260 | if (xfer == 0) |
2261 | return xfered; | |
2262 | if (xfer < 0) | |
0088c768 | 2263 | return -1; |
cf7a04e8 DJ |
2264 | |
2265 | if (progress) | |
2266 | (*progress) (xfer, baton); | |
2267 | ||
1e3ff5ad AC |
2268 | xfered += xfer; |
2269 | QUIT; | |
2270 | } | |
2271 | return len; | |
2272 | } | |
2273 | ||
7f79c47e DE |
2274 | /* For docs on target_write see target.h. */ |
2275 | ||
cf7a04e8 DJ |
2276 | LONGEST |
2277 | target_write (struct target_ops *ops, | |
2278 | enum target_object object, | |
2279 | const char *annex, const gdb_byte *buf, | |
2280 | ULONGEST offset, LONGEST len) | |
2281 | { | |
2282 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
2283 | NULL, NULL); | |
2284 | } | |
2285 | ||
159f81f3 DJ |
2286 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
2287 | the size of the transferred data. PADDING additional bytes are | |
2288 | available in *BUF_P. This is a helper function for | |
2289 | target_read_alloc; see the declaration of that function for more | |
2290 | information. */ | |
13547ab6 | 2291 | |
159f81f3 DJ |
2292 | static LONGEST |
2293 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, | |
2294 | const char *annex, gdb_byte **buf_p, int padding) | |
13547ab6 DJ |
2295 | { |
2296 | size_t buf_alloc, buf_pos; | |
2297 | gdb_byte *buf; | |
2298 | LONGEST n; | |
2299 | ||
2300 | /* This function does not have a length parameter; it reads the | |
2301 | entire OBJECT). Also, it doesn't support objects fetched partly | |
2302 | from one target and partly from another (in a different stratum, | |
2303 | e.g. a core file and an executable). Both reasons make it | |
2304 | unsuitable for reading memory. */ | |
2305 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
2306 | ||
2307 | /* Start by reading up to 4K at a time. The target will throttle | |
2308 | this number down if necessary. */ | |
2309 | buf_alloc = 4096; | |
2310 | buf = xmalloc (buf_alloc); | |
2311 | buf_pos = 0; | |
2312 | while (1) | |
2313 | { | |
2314 | n = target_read_partial (ops, object, annex, &buf[buf_pos], | |
159f81f3 | 2315 | buf_pos, buf_alloc - buf_pos - padding); |
13547ab6 DJ |
2316 | if (n < 0) |
2317 | { | |
2318 | /* An error occurred. */ | |
2319 | xfree (buf); | |
2320 | return -1; | |
2321 | } | |
2322 | else if (n == 0) | |
2323 | { | |
2324 | /* Read all there was. */ | |
2325 | if (buf_pos == 0) | |
2326 | xfree (buf); | |
2327 | else | |
2328 | *buf_p = buf; | |
2329 | return buf_pos; | |
2330 | } | |
2331 | ||
2332 | buf_pos += n; | |
2333 | ||
2334 | /* If the buffer is filling up, expand it. */ | |
2335 | if (buf_alloc < buf_pos * 2) | |
2336 | { | |
2337 | buf_alloc *= 2; | |
2338 | buf = xrealloc (buf, buf_alloc); | |
2339 | } | |
2340 | ||
2341 | QUIT; | |
2342 | } | |
2343 | } | |
2344 | ||
159f81f3 DJ |
2345 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
2346 | the size of the transferred data. See the declaration in "target.h" | |
2347 | function for more information about the return value. */ | |
2348 | ||
2349 | LONGEST | |
2350 | target_read_alloc (struct target_ops *ops, enum target_object object, | |
2351 | const char *annex, gdb_byte **buf_p) | |
2352 | { | |
2353 | return target_read_alloc_1 (ops, object, annex, buf_p, 0); | |
2354 | } | |
2355 | ||
2356 | /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and | |
2357 | returned as a string, allocated using xmalloc. If an error occurs | |
2358 | or the transfer is unsupported, NULL is returned. Empty objects | |
2359 | are returned as allocated but empty strings. A warning is issued | |
2360 | if the result contains any embedded NUL bytes. */ | |
2361 | ||
2362 | char * | |
2363 | target_read_stralloc (struct target_ops *ops, enum target_object object, | |
2364 | const char *annex) | |
2365 | { | |
0c1f71e7 | 2366 | char *buffer; |
7313baad | 2367 | LONGEST i, transferred; |
159f81f3 | 2368 | |
0c1f71e7 PA |
2369 | transferred = target_read_alloc_1 (ops, object, annex, |
2370 | (gdb_byte **) &buffer, 1); | |
159f81f3 DJ |
2371 | |
2372 | if (transferred < 0) | |
2373 | return NULL; | |
2374 | ||
2375 | if (transferred == 0) | |
2376 | return xstrdup (""); | |
2377 | ||
2378 | buffer[transferred] = 0; | |
7313baad UW |
2379 | |
2380 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
2381 | for (i = strlen (buffer); i < transferred; i++) | |
2382 | if (buffer[i] != 0) | |
2383 | { | |
2384 | warning (_("target object %d, annex %s, " | |
2385 | "contained unexpected null characters"), | |
2386 | (int) object, annex ? annex : "(none)"); | |
2387 | break; | |
2388 | } | |
159f81f3 | 2389 | |
0c1f71e7 | 2390 | return buffer; |
159f81f3 DJ |
2391 | } |
2392 | ||
b6591e8b AC |
2393 | /* Memory transfer methods. */ |
2394 | ||
2395 | void | |
1b0ba102 | 2396 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
2397 | LONGEST len) |
2398 | { | |
07b82ea5 PA |
2399 | /* This method is used to read from an alternate, non-current |
2400 | target. This read must bypass the overlay support (as symbols | |
2401 | don't match this target), and GDB's internal cache (wrong cache | |
2402 | for this target). */ | |
2403 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) | |
b6591e8b AC |
2404 | != len) |
2405 | memory_error (EIO, addr); | |
2406 | } | |
2407 | ||
2408 | ULONGEST | |
5d502164 MS |
2409 | get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr, |
2410 | int len, enum bfd_endian byte_order) | |
b6591e8b | 2411 | { |
f6519ebc | 2412 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
2413 | |
2414 | gdb_assert (len <= sizeof (buf)); | |
2415 | get_target_memory (ops, addr, buf, len); | |
e17a4113 | 2416 | return extract_unsigned_integer (buf, len, byte_order); |
b6591e8b AC |
2417 | } |
2418 | ||
d914c394 SS |
2419 | int |
2420 | target_insert_breakpoint (struct gdbarch *gdbarch, | |
2421 | struct bp_target_info *bp_tgt) | |
2422 | { | |
2423 | if (!may_insert_breakpoints) | |
2424 | { | |
2425 | warning (_("May not insert breakpoints")); | |
2426 | return 1; | |
2427 | } | |
2428 | ||
2429 | return (*current_target.to_insert_breakpoint) (gdbarch, bp_tgt); | |
2430 | } | |
2431 | ||
2432 | int | |
2433 | target_remove_breakpoint (struct gdbarch *gdbarch, | |
2434 | struct bp_target_info *bp_tgt) | |
2435 | { | |
2436 | /* This is kind of a weird case to handle, but the permission might | |
2437 | have been changed after breakpoints were inserted - in which case | |
2438 | we should just take the user literally and assume that any | |
2439 | breakpoints should be left in place. */ | |
2440 | if (!may_insert_breakpoints) | |
2441 | { | |
2442 | warning (_("May not remove breakpoints")); | |
2443 | return 1; | |
2444 | } | |
2445 | ||
2446 | return (*current_target.to_remove_breakpoint) (gdbarch, bp_tgt); | |
2447 | } | |
2448 | ||
c906108c | 2449 | static void |
fba45db2 | 2450 | target_info (char *args, int from_tty) |
c906108c SS |
2451 | { |
2452 | struct target_ops *t; | |
c906108c | 2453 | int has_all_mem = 0; |
c5aa993b | 2454 | |
c906108c | 2455 | if (symfile_objfile != NULL) |
a3f17187 | 2456 | printf_unfiltered (_("Symbols from \"%s\".\n"), symfile_objfile->name); |
c906108c | 2457 | |
258b763a | 2458 | for (t = target_stack; t != NULL; t = t->beneath) |
c906108c | 2459 | { |
c35b1492 | 2460 | if (!(*t->to_has_memory) (t)) |
c906108c SS |
2461 | continue; |
2462 | ||
c5aa993b | 2463 | if ((int) (t->to_stratum) <= (int) dummy_stratum) |
c906108c SS |
2464 | continue; |
2465 | if (has_all_mem) | |
3e43a32a MS |
2466 | printf_unfiltered (_("\tWhile running this, " |
2467 | "GDB does not access memory from...\n")); | |
c5aa993b JM |
2468 | printf_unfiltered ("%s:\n", t->to_longname); |
2469 | (t->to_files_info) (t); | |
c35b1492 | 2470 | has_all_mem = (*t->to_has_all_memory) (t); |
c906108c SS |
2471 | } |
2472 | } | |
2473 | ||
fd79ecee DJ |
2474 | /* This function is called before any new inferior is created, e.g. |
2475 | by running a program, attaching, or connecting to a target. | |
2476 | It cleans up any state from previous invocations which might | |
2477 | change between runs. This is a subset of what target_preopen | |
2478 | resets (things which might change between targets). */ | |
2479 | ||
2480 | void | |
2481 | target_pre_inferior (int from_tty) | |
2482 | { | |
c378eb4e | 2483 | /* Clear out solib state. Otherwise the solib state of the previous |
b9db4ced | 2484 | inferior might have survived and is entirely wrong for the new |
c378eb4e | 2485 | target. This has been observed on GNU/Linux using glibc 2.3. How |
b9db4ced UW |
2486 | to reproduce: |
2487 | ||
2488 | bash$ ./foo& | |
2489 | [1] 4711 | |
2490 | bash$ ./foo& | |
2491 | [1] 4712 | |
2492 | bash$ gdb ./foo | |
2493 | [...] | |
2494 | (gdb) attach 4711 | |
2495 | (gdb) detach | |
2496 | (gdb) attach 4712 | |
2497 | Cannot access memory at address 0xdeadbeef | |
2498 | */ | |
b9db4ced | 2499 | |
50c71eaf PA |
2500 | /* In some OSs, the shared library list is the same/global/shared |
2501 | across inferiors. If code is shared between processes, so are | |
2502 | memory regions and features. */ | |
f5656ead | 2503 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
50c71eaf PA |
2504 | { |
2505 | no_shared_libraries (NULL, from_tty); | |
2506 | ||
2507 | invalidate_target_mem_regions (); | |
424163ea | 2508 | |
50c71eaf PA |
2509 | target_clear_description (); |
2510 | } | |
8ffcbaaf YQ |
2511 | |
2512 | agent_capability_invalidate (); | |
fd79ecee DJ |
2513 | } |
2514 | ||
b8fa0bfa PA |
2515 | /* Callback for iterate_over_inferiors. Gets rid of the given |
2516 | inferior. */ | |
2517 | ||
2518 | static int | |
2519 | dispose_inferior (struct inferior *inf, void *args) | |
2520 | { | |
2521 | struct thread_info *thread; | |
2522 | ||
2523 | thread = any_thread_of_process (inf->pid); | |
2524 | if (thread) | |
2525 | { | |
2526 | switch_to_thread (thread->ptid); | |
2527 | ||
2528 | /* Core inferiors actually should be detached, not killed. */ | |
2529 | if (target_has_execution) | |
2530 | target_kill (); | |
2531 | else | |
2532 | target_detach (NULL, 0); | |
2533 | } | |
2534 | ||
2535 | return 0; | |
2536 | } | |
2537 | ||
c906108c SS |
2538 | /* This is to be called by the open routine before it does |
2539 | anything. */ | |
2540 | ||
2541 | void | |
fba45db2 | 2542 | target_preopen (int from_tty) |
c906108c | 2543 | { |
c5aa993b | 2544 | dont_repeat (); |
c906108c | 2545 | |
b8fa0bfa | 2546 | if (have_inferiors ()) |
c5aa993b | 2547 | { |
adf40b2e | 2548 | if (!from_tty |
b8fa0bfa PA |
2549 | || !have_live_inferiors () |
2550 | || query (_("A program is being debugged already. Kill it? "))) | |
2551 | iterate_over_inferiors (dispose_inferior, NULL); | |
c906108c | 2552 | else |
8a3fe4f8 | 2553 | error (_("Program not killed.")); |
c906108c SS |
2554 | } |
2555 | ||
2556 | /* Calling target_kill may remove the target from the stack. But if | |
2557 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
2558 | /* Leave the exec target, though. The user may be switching from a |
2559 | live process to a core of the same program. */ | |
2560 | pop_all_targets_above (file_stratum, 0); | |
fd79ecee DJ |
2561 | |
2562 | target_pre_inferior (from_tty); | |
c906108c SS |
2563 | } |
2564 | ||
2565 | /* Detach a target after doing deferred register stores. */ | |
2566 | ||
2567 | void | |
fba45db2 | 2568 | target_detach (char *args, int from_tty) |
c906108c | 2569 | { |
136d6dae VP |
2570 | struct target_ops* t; |
2571 | ||
f5656ead | 2572 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
2573 | /* Don't remove global breakpoints here. They're removed on |
2574 | disconnection from the target. */ | |
2575 | ; | |
2576 | else | |
2577 | /* If we're in breakpoints-always-inserted mode, have to remove | |
2578 | them before detaching. */ | |
6c95b8df | 2579 | remove_breakpoints_pid (PIDGET (inferior_ptid)); |
74960c60 | 2580 | |
24291992 PA |
2581 | prepare_for_detach (); |
2582 | ||
136d6dae VP |
2583 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2584 | { | |
2585 | if (t->to_detach != NULL) | |
2586 | { | |
2587 | t->to_detach (t, args, from_tty); | |
947b8855 PA |
2588 | if (targetdebug) |
2589 | fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n", | |
2590 | args, from_tty); | |
136d6dae VP |
2591 | return; |
2592 | } | |
2593 | } | |
2594 | ||
9b20d036 | 2595 | internal_error (__FILE__, __LINE__, _("could not find a target to detach")); |
c906108c SS |
2596 | } |
2597 | ||
6ad8ae5c DJ |
2598 | void |
2599 | target_disconnect (char *args, int from_tty) | |
2600 | { | |
597320e7 DJ |
2601 | struct target_ops *t; |
2602 | ||
50c71eaf PA |
2603 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
2604 | are global across processes, we have to remove them before | |
2605 | disconnecting. */ | |
74960c60 VP |
2606 | remove_breakpoints (); |
2607 | ||
597320e7 DJ |
2608 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2609 | if (t->to_disconnect != NULL) | |
2610 | { | |
2611 | if (targetdebug) | |
2612 | fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n", | |
2613 | args, from_tty); | |
2614 | t->to_disconnect (t, args, from_tty); | |
2615 | return; | |
2616 | } | |
2617 | ||
2618 | tcomplain (); | |
6ad8ae5c DJ |
2619 | } |
2620 | ||
117de6a9 | 2621 | ptid_t |
47608cb1 | 2622 | target_wait (ptid_t ptid, struct target_waitstatus *status, int options) |
117de6a9 PA |
2623 | { |
2624 | struct target_ops *t; | |
2625 | ||
2626 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2627 | { | |
2628 | if (t->to_wait != NULL) | |
2629 | { | |
47608cb1 | 2630 | ptid_t retval = (*t->to_wait) (t, ptid, status, options); |
117de6a9 PA |
2631 | |
2632 | if (targetdebug) | |
2633 | { | |
2634 | char *status_string; | |
09826ec5 | 2635 | char *options_string; |
117de6a9 PA |
2636 | |
2637 | status_string = target_waitstatus_to_string (status); | |
09826ec5 | 2638 | options_string = target_options_to_string (options); |
117de6a9 | 2639 | fprintf_unfiltered (gdb_stdlog, |
09826ec5 PA |
2640 | "target_wait (%d, status, options={%s})" |
2641 | " = %d, %s\n", | |
2642 | PIDGET (ptid), options_string, | |
2643 | PIDGET (retval), status_string); | |
117de6a9 | 2644 | xfree (status_string); |
09826ec5 | 2645 | xfree (options_string); |
117de6a9 PA |
2646 | } |
2647 | ||
2648 | return retval; | |
2649 | } | |
2650 | } | |
2651 | ||
2652 | noprocess (); | |
2653 | } | |
2654 | ||
2655 | char * | |
2656 | target_pid_to_str (ptid_t ptid) | |
2657 | { | |
2658 | struct target_ops *t; | |
2659 | ||
2660 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2661 | { | |
2662 | if (t->to_pid_to_str != NULL) | |
2663 | return (*t->to_pid_to_str) (t, ptid); | |
2664 | } | |
2665 | ||
2666 | return normal_pid_to_str (ptid); | |
2667 | } | |
2668 | ||
4694da01 TT |
2669 | char * |
2670 | target_thread_name (struct thread_info *info) | |
2671 | { | |
2672 | struct target_ops *t; | |
2673 | ||
2674 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2675 | { | |
2676 | if (t->to_thread_name != NULL) | |
2677 | return (*t->to_thread_name) (info); | |
2678 | } | |
2679 | ||
2680 | return NULL; | |
2681 | } | |
2682 | ||
e1ac3328 | 2683 | void |
2ea28649 | 2684 | target_resume (ptid_t ptid, int step, enum gdb_signal signal) |
e1ac3328 | 2685 | { |
28439f5e PA |
2686 | struct target_ops *t; |
2687 | ||
4e5d721f | 2688 | target_dcache_invalidate (); |
28439f5e PA |
2689 | |
2690 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2691 | { | |
2692 | if (t->to_resume != NULL) | |
2693 | { | |
2694 | t->to_resume (t, ptid, step, signal); | |
2695 | if (targetdebug) | |
2696 | fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n", | |
2697 | PIDGET (ptid), | |
2698 | step ? "step" : "continue", | |
2ea28649 | 2699 | gdb_signal_to_name (signal)); |
28439f5e | 2700 | |
e66408ed | 2701 | registers_changed_ptid (ptid); |
28439f5e PA |
2702 | set_executing (ptid, 1); |
2703 | set_running (ptid, 1); | |
edb3359d | 2704 | clear_inline_frame_state (ptid); |
28439f5e PA |
2705 | return; |
2706 | } | |
2707 | } | |
2708 | ||
2709 | noprocess (); | |
e1ac3328 | 2710 | } |
2455069d UW |
2711 | |
2712 | void | |
2713 | target_pass_signals (int numsigs, unsigned char *pass_signals) | |
2714 | { | |
2715 | struct target_ops *t; | |
2716 | ||
2717 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2718 | { | |
2719 | if (t->to_pass_signals != NULL) | |
2720 | { | |
2721 | if (targetdebug) | |
2722 | { | |
2723 | int i; | |
2724 | ||
2725 | fprintf_unfiltered (gdb_stdlog, "target_pass_signals (%d, {", | |
2726 | numsigs); | |
2727 | ||
2728 | for (i = 0; i < numsigs; i++) | |
2729 | if (pass_signals[i]) | |
2730 | fprintf_unfiltered (gdb_stdlog, " %s", | |
2ea28649 | 2731 | gdb_signal_to_name (i)); |
2455069d UW |
2732 | |
2733 | fprintf_unfiltered (gdb_stdlog, " })\n"); | |
2734 | } | |
2735 | ||
2736 | (*t->to_pass_signals) (numsigs, pass_signals); | |
2737 | return; | |
2738 | } | |
2739 | } | |
2740 | } | |
2741 | ||
9b224c5e PA |
2742 | void |
2743 | target_program_signals (int numsigs, unsigned char *program_signals) | |
2744 | { | |
2745 | struct target_ops *t; | |
2746 | ||
2747 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2748 | { | |
2749 | if (t->to_program_signals != NULL) | |
2750 | { | |
2751 | if (targetdebug) | |
2752 | { | |
2753 | int i; | |
2754 | ||
2755 | fprintf_unfiltered (gdb_stdlog, "target_program_signals (%d, {", | |
2756 | numsigs); | |
2757 | ||
2758 | for (i = 0; i < numsigs; i++) | |
2759 | if (program_signals[i]) | |
2760 | fprintf_unfiltered (gdb_stdlog, " %s", | |
2ea28649 | 2761 | gdb_signal_to_name (i)); |
9b224c5e PA |
2762 | |
2763 | fprintf_unfiltered (gdb_stdlog, " })\n"); | |
2764 | } | |
2765 | ||
2766 | (*t->to_program_signals) (numsigs, program_signals); | |
2767 | return; | |
2768 | } | |
2769 | } | |
2770 | } | |
2771 | ||
ee057212 DJ |
2772 | /* Look through the list of possible targets for a target that can |
2773 | follow forks. */ | |
2774 | ||
2775 | int | |
2776 | target_follow_fork (int follow_child) | |
2777 | { | |
2778 | struct target_ops *t; | |
2779 | ||
2780 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2781 | { | |
2782 | if (t->to_follow_fork != NULL) | |
2783 | { | |
2784 | int retval = t->to_follow_fork (t, follow_child); | |
5d502164 | 2785 | |
ee057212 DJ |
2786 | if (targetdebug) |
2787 | fprintf_unfiltered (gdb_stdlog, "target_follow_fork (%d) = %d\n", | |
2788 | follow_child, retval); | |
2789 | return retval; | |
2790 | } | |
2791 | } | |
2792 | ||
2793 | /* Some target returned a fork event, but did not know how to follow it. */ | |
2794 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 2795 | _("could not find a target to follow fork")); |
ee057212 DJ |
2796 | } |
2797 | ||
136d6dae VP |
2798 | void |
2799 | target_mourn_inferior (void) | |
2800 | { | |
2801 | struct target_ops *t; | |
5d502164 | 2802 | |
136d6dae VP |
2803 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2804 | { | |
2805 | if (t->to_mourn_inferior != NULL) | |
2806 | { | |
2807 | t->to_mourn_inferior (t); | |
947b8855 PA |
2808 | if (targetdebug) |
2809 | fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n"); | |
efbd6e75 JB |
2810 | |
2811 | /* We no longer need to keep handles on any of the object files. | |
2812 | Make sure to release them to avoid unnecessarily locking any | |
2813 | of them while we're not actually debugging. */ | |
2814 | bfd_cache_close_all (); | |
2815 | ||
136d6dae VP |
2816 | return; |
2817 | } | |
2818 | } | |
2819 | ||
2820 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 2821 | _("could not find a target to follow mourn inferior")); |
136d6dae VP |
2822 | } |
2823 | ||
424163ea DJ |
2824 | /* Look for a target which can describe architectural features, starting |
2825 | from TARGET. If we find one, return its description. */ | |
2826 | ||
2827 | const struct target_desc * | |
2828 | target_read_description (struct target_ops *target) | |
2829 | { | |
2830 | struct target_ops *t; | |
2831 | ||
2832 | for (t = target; t != NULL; t = t->beneath) | |
2833 | if (t->to_read_description != NULL) | |
2834 | { | |
2835 | const struct target_desc *tdesc; | |
2836 | ||
2837 | tdesc = t->to_read_description (t); | |
2838 | if (tdesc) | |
2839 | return tdesc; | |
2840 | } | |
2841 | ||
2842 | return NULL; | |
2843 | } | |
2844 | ||
08388c79 DE |
2845 | /* The default implementation of to_search_memory. |
2846 | This implements a basic search of memory, reading target memory and | |
2847 | performing the search here (as opposed to performing the search in on the | |
2848 | target side with, for example, gdbserver). */ | |
2849 | ||
2850 | int | |
2851 | simple_search_memory (struct target_ops *ops, | |
2852 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2853 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2854 | CORE_ADDR *found_addrp) | |
2855 | { | |
2856 | /* NOTE: also defined in find.c testcase. */ | |
2857 | #define SEARCH_CHUNK_SIZE 16000 | |
2858 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
2859 | /* Buffer to hold memory contents for searching. */ | |
2860 | gdb_byte *search_buf; | |
2861 | unsigned search_buf_size; | |
2862 | struct cleanup *old_cleanups; | |
2863 | ||
2864 | search_buf_size = chunk_size + pattern_len - 1; | |
2865 | ||
2866 | /* No point in trying to allocate a buffer larger than the search space. */ | |
2867 | if (search_space_len < search_buf_size) | |
2868 | search_buf_size = search_space_len; | |
2869 | ||
2870 | search_buf = malloc (search_buf_size); | |
2871 | if (search_buf == NULL) | |
5e1471f5 | 2872 | error (_("Unable to allocate memory to perform the search.")); |
08388c79 DE |
2873 | old_cleanups = make_cleanup (free_current_contents, &search_buf); |
2874 | ||
2875 | /* Prime the search buffer. */ | |
2876 | ||
2877 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2878 | search_buf, start_addr, search_buf_size) != search_buf_size) | |
2879 | { | |
b3dc46ff AB |
2880 | warning (_("Unable to access %s bytes of target " |
2881 | "memory at %s, halting search."), | |
2882 | pulongest (search_buf_size), hex_string (start_addr)); | |
08388c79 DE |
2883 | do_cleanups (old_cleanups); |
2884 | return -1; | |
2885 | } | |
2886 | ||
2887 | /* Perform the search. | |
2888 | ||
2889 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
2890 | When we've scanned N bytes we copy the trailing bytes to the start and | |
2891 | read in another N bytes. */ | |
2892 | ||
2893 | while (search_space_len >= pattern_len) | |
2894 | { | |
2895 | gdb_byte *found_ptr; | |
2896 | unsigned nr_search_bytes = min (search_space_len, search_buf_size); | |
2897 | ||
2898 | found_ptr = memmem (search_buf, nr_search_bytes, | |
2899 | pattern, pattern_len); | |
2900 | ||
2901 | if (found_ptr != NULL) | |
2902 | { | |
2903 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
5d502164 | 2904 | |
08388c79 DE |
2905 | *found_addrp = found_addr; |
2906 | do_cleanups (old_cleanups); | |
2907 | return 1; | |
2908 | } | |
2909 | ||
2910 | /* Not found in this chunk, skip to next chunk. */ | |
2911 | ||
2912 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
2913 | if (search_space_len >= chunk_size) | |
2914 | search_space_len -= chunk_size; | |
2915 | else | |
2916 | search_space_len = 0; | |
2917 | ||
2918 | if (search_space_len >= pattern_len) | |
2919 | { | |
2920 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 2921 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
2922 | int nr_to_read; |
2923 | ||
2924 | /* Copy the trailing part of the previous iteration to the front | |
2925 | of the buffer for the next iteration. */ | |
2926 | gdb_assert (keep_len == pattern_len - 1); | |
2927 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
2928 | ||
2929 | nr_to_read = min (search_space_len - keep_len, chunk_size); | |
2930 | ||
2931 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2932 | search_buf + keep_len, read_addr, | |
2933 | nr_to_read) != nr_to_read) | |
2934 | { | |
b3dc46ff | 2935 | warning (_("Unable to access %s bytes of target " |
9b20d036 | 2936 | "memory at %s, halting search."), |
b3dc46ff | 2937 | plongest (nr_to_read), |
08388c79 DE |
2938 | hex_string (read_addr)); |
2939 | do_cleanups (old_cleanups); | |
2940 | return -1; | |
2941 | } | |
2942 | ||
2943 | start_addr += chunk_size; | |
2944 | } | |
2945 | } | |
2946 | ||
2947 | /* Not found. */ | |
2948 | ||
2949 | do_cleanups (old_cleanups); | |
2950 | return 0; | |
2951 | } | |
2952 | ||
2953 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the | |
2954 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2955 | ||
2956 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2957 | requiring halting of the search (e.g. memory read error). | |
2958 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2959 | ||
2960 | int | |
2961 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2962 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2963 | CORE_ADDR *found_addrp) | |
2964 | { | |
2965 | struct target_ops *t; | |
2966 | int found; | |
2967 | ||
2968 | /* We don't use INHERIT to set current_target.to_search_memory, | |
2969 | so we have to scan the target stack and handle targetdebug | |
2970 | ourselves. */ | |
2971 | ||
2972 | if (targetdebug) | |
2973 | fprintf_unfiltered (gdb_stdlog, "target_search_memory (%s, ...)\n", | |
2974 | hex_string (start_addr)); | |
2975 | ||
2976 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2977 | if (t->to_search_memory != NULL) | |
2978 | break; | |
2979 | ||
2980 | if (t != NULL) | |
2981 | { | |
2982 | found = t->to_search_memory (t, start_addr, search_space_len, | |
2983 | pattern, pattern_len, found_addrp); | |
2984 | } | |
2985 | else | |
2986 | { | |
2987 | /* If a special version of to_search_memory isn't available, use the | |
2988 | simple version. */ | |
c35b1492 | 2989 | found = simple_search_memory (current_target.beneath, |
08388c79 DE |
2990 | start_addr, search_space_len, |
2991 | pattern, pattern_len, found_addrp); | |
2992 | } | |
2993 | ||
2994 | if (targetdebug) | |
2995 | fprintf_unfiltered (gdb_stdlog, " = %d\n", found); | |
2996 | ||
2997 | return found; | |
2998 | } | |
2999 | ||
8edfe269 DJ |
3000 | /* Look through the currently pushed targets. If none of them will |
3001 | be able to restart the currently running process, issue an error | |
3002 | message. */ | |
3003 | ||
3004 | void | |
3005 | target_require_runnable (void) | |
3006 | { | |
3007 | struct target_ops *t; | |
3008 | ||
3009 | for (t = target_stack; t != NULL; t = t->beneath) | |
3010 | { | |
3011 | /* If this target knows how to create a new program, then | |
3012 | assume we will still be able to after killing the current | |
3013 | one. Either killing and mourning will not pop T, or else | |
3014 | find_default_run_target will find it again. */ | |
3015 | if (t->to_create_inferior != NULL) | |
3016 | return; | |
3017 | ||
3018 | /* Do not worry about thread_stratum targets that can not | |
3019 | create inferiors. Assume they will be pushed again if | |
3020 | necessary, and continue to the process_stratum. */ | |
85e747d2 UW |
3021 | if (t->to_stratum == thread_stratum |
3022 | || t->to_stratum == arch_stratum) | |
8edfe269 DJ |
3023 | continue; |
3024 | ||
3e43a32a MS |
3025 | error (_("The \"%s\" target does not support \"run\". " |
3026 | "Try \"help target\" or \"continue\"."), | |
8edfe269 DJ |
3027 | t->to_shortname); |
3028 | } | |
3029 | ||
3030 | /* This function is only called if the target is running. In that | |
3031 | case there should have been a process_stratum target and it | |
c378eb4e | 3032 | should either know how to create inferiors, or not... */ |
9b20d036 | 3033 | internal_error (__FILE__, __LINE__, _("No targets found")); |
8edfe269 DJ |
3034 | } |
3035 | ||
c906108c SS |
3036 | /* Look through the list of possible targets for a target that can |
3037 | execute a run or attach command without any other data. This is | |
3038 | used to locate the default process stratum. | |
3039 | ||
5f667f2d PA |
3040 | If DO_MESG is not NULL, the result is always valid (error() is |
3041 | called for errors); else, return NULL on error. */ | |
c906108c SS |
3042 | |
3043 | static struct target_ops * | |
fba45db2 | 3044 | find_default_run_target (char *do_mesg) |
c906108c SS |
3045 | { |
3046 | struct target_ops **t; | |
3047 | struct target_ops *runable = NULL; | |
3048 | int count; | |
3049 | ||
3050 | count = 0; | |
3051 | ||
3052 | for (t = target_structs; t < target_structs + target_struct_size; | |
3053 | ++t) | |
3054 | { | |
c5aa993b | 3055 | if ((*t)->to_can_run && target_can_run (*t)) |
c906108c SS |
3056 | { |
3057 | runable = *t; | |
3058 | ++count; | |
3059 | } | |
3060 | } | |
3061 | ||
3062 | if (count != 1) | |
5f667f2d PA |
3063 | { |
3064 | if (do_mesg) | |
3065 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
3066 | else | |
3067 | return NULL; | |
3068 | } | |
c906108c SS |
3069 | |
3070 | return runable; | |
3071 | } | |
3072 | ||
3073 | void | |
136d6dae | 3074 | find_default_attach (struct target_ops *ops, char *args, int from_tty) |
c906108c SS |
3075 | { |
3076 | struct target_ops *t; | |
3077 | ||
c5aa993b | 3078 | t = find_default_run_target ("attach"); |
136d6dae | 3079 | (t->to_attach) (t, args, from_tty); |
c906108c SS |
3080 | return; |
3081 | } | |
3082 | ||
c906108c | 3083 | void |
136d6dae VP |
3084 | find_default_create_inferior (struct target_ops *ops, |
3085 | char *exec_file, char *allargs, char **env, | |
c27cda74 | 3086 | int from_tty) |
c906108c SS |
3087 | { |
3088 | struct target_ops *t; | |
3089 | ||
c5aa993b | 3090 | t = find_default_run_target ("run"); |
136d6dae | 3091 | (t->to_create_inferior) (t, exec_file, allargs, env, from_tty); |
c906108c SS |
3092 | return; |
3093 | } | |
3094 | ||
2c0b251b | 3095 | static int |
b84876c2 PA |
3096 | find_default_can_async_p (void) |
3097 | { | |
3098 | struct target_ops *t; | |
3099 | ||
5f667f2d PA |
3100 | /* This may be called before the target is pushed on the stack; |
3101 | look for the default process stratum. If there's none, gdb isn't | |
3102 | configured with a native debugger, and target remote isn't | |
3103 | connected yet. */ | |
3104 | t = find_default_run_target (NULL); | |
3105 | if (t && t->to_can_async_p) | |
b84876c2 PA |
3106 | return (t->to_can_async_p) (); |
3107 | return 0; | |
3108 | } | |
3109 | ||
2c0b251b | 3110 | static int |
b84876c2 PA |
3111 | find_default_is_async_p (void) |
3112 | { | |
3113 | struct target_ops *t; | |
3114 | ||
5f667f2d PA |
3115 | /* This may be called before the target is pushed on the stack; |
3116 | look for the default process stratum. If there's none, gdb isn't | |
3117 | configured with a native debugger, and target remote isn't | |
3118 | connected yet. */ | |
3119 | t = find_default_run_target (NULL); | |
3120 | if (t && t->to_is_async_p) | |
b84876c2 PA |
3121 | return (t->to_is_async_p) (); |
3122 | return 0; | |
3123 | } | |
3124 | ||
2c0b251b | 3125 | static int |
9908b566 VP |
3126 | find_default_supports_non_stop (void) |
3127 | { | |
3128 | struct target_ops *t; | |
3129 | ||
3130 | t = find_default_run_target (NULL); | |
3131 | if (t && t->to_supports_non_stop) | |
3132 | return (t->to_supports_non_stop) (); | |
3133 | return 0; | |
3134 | } | |
3135 | ||
3136 | int | |
2c0b251b | 3137 | target_supports_non_stop (void) |
9908b566 VP |
3138 | { |
3139 | struct target_ops *t; | |
5d502164 | 3140 | |
9908b566 VP |
3141 | for (t = ¤t_target; t != NULL; t = t->beneath) |
3142 | if (t->to_supports_non_stop) | |
3143 | return t->to_supports_non_stop (); | |
3144 | ||
3145 | return 0; | |
3146 | } | |
3147 | ||
145b16a9 UW |
3148 | /* Implement the "info proc" command. */ |
3149 | ||
451b7c33 | 3150 | int |
145b16a9 UW |
3151 | target_info_proc (char *args, enum info_proc_what what) |
3152 | { | |
3153 | struct target_ops *t; | |
3154 | ||
3155 | /* If we're already connected to something that can get us OS | |
3156 | related data, use it. Otherwise, try using the native | |
3157 | target. */ | |
3158 | if (current_target.to_stratum >= process_stratum) | |
3159 | t = current_target.beneath; | |
3160 | else | |
3161 | t = find_default_run_target (NULL); | |
3162 | ||
3163 | for (; t != NULL; t = t->beneath) | |
3164 | { | |
3165 | if (t->to_info_proc != NULL) | |
3166 | { | |
3167 | t->to_info_proc (t, args, what); | |
3168 | ||
3169 | if (targetdebug) | |
3170 | fprintf_unfiltered (gdb_stdlog, | |
3171 | "target_info_proc (\"%s\", %d)\n", args, what); | |
3172 | ||
451b7c33 | 3173 | return 1; |
145b16a9 UW |
3174 | } |
3175 | } | |
3176 | ||
451b7c33 | 3177 | return 0; |
145b16a9 UW |
3178 | } |
3179 | ||
03583c20 UW |
3180 | static int |
3181 | find_default_supports_disable_randomization (void) | |
3182 | { | |
3183 | struct target_ops *t; | |
3184 | ||
3185 | t = find_default_run_target (NULL); | |
3186 | if (t && t->to_supports_disable_randomization) | |
3187 | return (t->to_supports_disable_randomization) (); | |
3188 | return 0; | |
3189 | } | |
3190 | ||
3191 | int | |
3192 | target_supports_disable_randomization (void) | |
3193 | { | |
3194 | struct target_ops *t; | |
3195 | ||
3196 | for (t = ¤t_target; t != NULL; t = t->beneath) | |
3197 | if (t->to_supports_disable_randomization) | |
3198 | return t->to_supports_disable_randomization (); | |
3199 | ||
3200 | return 0; | |
3201 | } | |
9908b566 | 3202 | |
07e059b5 VP |
3203 | char * |
3204 | target_get_osdata (const char *type) | |
3205 | { | |
07e059b5 VP |
3206 | struct target_ops *t; |
3207 | ||
739ef7fb PA |
3208 | /* If we're already connected to something that can get us OS |
3209 | related data, use it. Otherwise, try using the native | |
3210 | target. */ | |
3211 | if (current_target.to_stratum >= process_stratum) | |
6d097e65 | 3212 | t = current_target.beneath; |
739ef7fb PA |
3213 | else |
3214 | t = find_default_run_target ("get OS data"); | |
07e059b5 VP |
3215 | |
3216 | if (!t) | |
3217 | return NULL; | |
3218 | ||
6d097e65 | 3219 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
3220 | } |
3221 | ||
6c95b8df PA |
3222 | /* Determine the current address space of thread PTID. */ |
3223 | ||
3224 | struct address_space * | |
3225 | target_thread_address_space (ptid_t ptid) | |
3226 | { | |
c0694254 | 3227 | struct address_space *aspace; |
6c95b8df | 3228 | struct inferior *inf; |
c0694254 PA |
3229 | struct target_ops *t; |
3230 | ||
3231 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3232 | { | |
3233 | if (t->to_thread_address_space != NULL) | |
3234 | { | |
3235 | aspace = t->to_thread_address_space (t, ptid); | |
3236 | gdb_assert (aspace); | |
6c95b8df | 3237 | |
c0694254 PA |
3238 | if (targetdebug) |
3239 | fprintf_unfiltered (gdb_stdlog, | |
3240 | "target_thread_address_space (%s) = %d\n", | |
3241 | target_pid_to_str (ptid), | |
3242 | address_space_num (aspace)); | |
3243 | return aspace; | |
3244 | } | |
3245 | } | |
6c95b8df PA |
3246 | |
3247 | /* Fall-back to the "main" address space of the inferior. */ | |
3248 | inf = find_inferior_pid (ptid_get_pid (ptid)); | |
3249 | ||
3250 | if (inf == NULL || inf->aspace == NULL) | |
3e43a32a | 3251 | internal_error (__FILE__, __LINE__, |
9b20d036 MS |
3252 | _("Can't determine the current " |
3253 | "address space of thread %s\n"), | |
6c95b8df PA |
3254 | target_pid_to_str (ptid)); |
3255 | ||
3256 | return inf->aspace; | |
3257 | } | |
3258 | ||
7313baad UW |
3259 | |
3260 | /* Target file operations. */ | |
3261 | ||
3262 | static struct target_ops * | |
3263 | default_fileio_target (void) | |
3264 | { | |
3265 | /* If we're already connected to something that can perform | |
3266 | file I/O, use it. Otherwise, try using the native target. */ | |
3267 | if (current_target.to_stratum >= process_stratum) | |
3268 | return current_target.beneath; | |
3269 | else | |
3270 | return find_default_run_target ("file I/O"); | |
3271 | } | |
3272 | ||
3273 | /* Open FILENAME on the target, using FLAGS and MODE. Return a | |
3274 | target file descriptor, or -1 if an error occurs (and set | |
3275 | *TARGET_ERRNO). */ | |
3276 | int | |
3277 | target_fileio_open (const char *filename, int flags, int mode, | |
3278 | int *target_errno) | |
3279 | { | |
3280 | struct target_ops *t; | |
3281 | ||
3282 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3283 | { | |
3284 | if (t->to_fileio_open != NULL) | |
3285 | { | |
3286 | int fd = t->to_fileio_open (filename, flags, mode, target_errno); | |
3287 | ||
3288 | if (targetdebug) | |
3289 | fprintf_unfiltered (gdb_stdlog, | |
3290 | "target_fileio_open (%s,0x%x,0%o) = %d (%d)\n", | |
3291 | filename, flags, mode, | |
3292 | fd, fd != -1 ? 0 : *target_errno); | |
3293 | return fd; | |
3294 | } | |
3295 | } | |
3296 | ||
3297 | *target_errno = FILEIO_ENOSYS; | |
3298 | return -1; | |
3299 | } | |
3300 | ||
3301 | /* Write up to LEN bytes from WRITE_BUF to FD on the target. | |
3302 | Return the number of bytes written, or -1 if an error occurs | |
3303 | (and set *TARGET_ERRNO). */ | |
3304 | int | |
3305 | target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
3306 | ULONGEST offset, int *target_errno) | |
3307 | { | |
3308 | struct target_ops *t; | |
3309 | ||
3310 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3311 | { | |
3312 | if (t->to_fileio_pwrite != NULL) | |
3313 | { | |
3314 | int ret = t->to_fileio_pwrite (fd, write_buf, len, offset, | |
3315 | target_errno); | |
3316 | ||
3317 | if (targetdebug) | |
3318 | fprintf_unfiltered (gdb_stdlog, | |
a71b5a38 | 3319 | "target_fileio_pwrite (%d,...,%d,%s) " |
7313baad | 3320 | "= %d (%d)\n", |
a71b5a38 | 3321 | fd, len, pulongest (offset), |
7313baad UW |
3322 | ret, ret != -1 ? 0 : *target_errno); |
3323 | return ret; | |
3324 | } | |
3325 | } | |
3326 | ||
3327 | *target_errno = FILEIO_ENOSYS; | |
3328 | return -1; | |
3329 | } | |
3330 | ||
3331 | /* Read up to LEN bytes FD on the target into READ_BUF. | |
3332 | Return the number of bytes read, or -1 if an error occurs | |
3333 | (and set *TARGET_ERRNO). */ | |
3334 | int | |
3335 | target_fileio_pread (int fd, gdb_byte *read_buf, int len, | |
3336 | ULONGEST offset, int *target_errno) | |
3337 | { | |
3338 | struct target_ops *t; | |
3339 | ||
3340 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3341 | { | |
3342 | if (t->to_fileio_pread != NULL) | |
3343 | { | |
3344 | int ret = t->to_fileio_pread (fd, read_buf, len, offset, | |
3345 | target_errno); | |
3346 | ||
3347 | if (targetdebug) | |
3348 | fprintf_unfiltered (gdb_stdlog, | |
a71b5a38 | 3349 | "target_fileio_pread (%d,...,%d,%s) " |
7313baad | 3350 | "= %d (%d)\n", |
a71b5a38 | 3351 | fd, len, pulongest (offset), |
7313baad UW |
3352 | ret, ret != -1 ? 0 : *target_errno); |
3353 | return ret; | |
3354 | } | |
3355 | } | |
3356 | ||
3357 | *target_errno = FILEIO_ENOSYS; | |
3358 | return -1; | |
3359 | } | |
3360 | ||
3361 | /* Close FD on the target. Return 0, or -1 if an error occurs | |
3362 | (and set *TARGET_ERRNO). */ | |
3363 | int | |
3364 | target_fileio_close (int fd, int *target_errno) | |
3365 | { | |
3366 | struct target_ops *t; | |
3367 | ||
3368 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3369 | { | |
3370 | if (t->to_fileio_close != NULL) | |
3371 | { | |
3372 | int ret = t->to_fileio_close (fd, target_errno); | |
3373 | ||
3374 | if (targetdebug) | |
3375 | fprintf_unfiltered (gdb_stdlog, | |
3376 | "target_fileio_close (%d) = %d (%d)\n", | |
3377 | fd, ret, ret != -1 ? 0 : *target_errno); | |
3378 | return ret; | |
3379 | } | |
3380 | } | |
3381 | ||
3382 | *target_errno = FILEIO_ENOSYS; | |
3383 | return -1; | |
3384 | } | |
3385 | ||
3386 | /* Unlink FILENAME on the target. Return 0, or -1 if an error | |
3387 | occurs (and set *TARGET_ERRNO). */ | |
3388 | int | |
3389 | target_fileio_unlink (const char *filename, int *target_errno) | |
3390 | { | |
3391 | struct target_ops *t; | |
3392 | ||
3393 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3394 | { | |
3395 | if (t->to_fileio_unlink != NULL) | |
3396 | { | |
3397 | int ret = t->to_fileio_unlink (filename, target_errno); | |
3398 | ||
3399 | if (targetdebug) | |
3400 | fprintf_unfiltered (gdb_stdlog, | |
3401 | "target_fileio_unlink (%s) = %d (%d)\n", | |
3402 | filename, ret, ret != -1 ? 0 : *target_errno); | |
3403 | return ret; | |
3404 | } | |
3405 | } | |
3406 | ||
3407 | *target_errno = FILEIO_ENOSYS; | |
3408 | return -1; | |
3409 | } | |
3410 | ||
b9e7b9c3 UW |
3411 | /* Read value of symbolic link FILENAME on the target. Return a |
3412 | null-terminated string allocated via xmalloc, or NULL if an error | |
3413 | occurs (and set *TARGET_ERRNO). */ | |
3414 | char * | |
3415 | target_fileio_readlink (const char *filename, int *target_errno) | |
3416 | { | |
3417 | struct target_ops *t; | |
3418 | ||
3419 | for (t = default_fileio_target (); t != NULL; t = t->beneath) | |
3420 | { | |
3421 | if (t->to_fileio_readlink != NULL) | |
3422 | { | |
3423 | char *ret = t->to_fileio_readlink (filename, target_errno); | |
3424 | ||
3425 | if (targetdebug) | |
3426 | fprintf_unfiltered (gdb_stdlog, | |
3427 | "target_fileio_readlink (%s) = %s (%d)\n", | |
3428 | filename, ret? ret : "(nil)", | |
3429 | ret? 0 : *target_errno); | |
3430 | return ret; | |
3431 | } | |
3432 | } | |
3433 | ||
3434 | *target_errno = FILEIO_ENOSYS; | |
3435 | return NULL; | |
3436 | } | |
3437 | ||
7313baad UW |
3438 | static void |
3439 | target_fileio_close_cleanup (void *opaque) | |
3440 | { | |
3441 | int fd = *(int *) opaque; | |
3442 | int target_errno; | |
3443 | ||
3444 | target_fileio_close (fd, &target_errno); | |
3445 | } | |
3446 | ||
3447 | /* Read target file FILENAME. Store the result in *BUF_P and | |
3448 | return the size of the transferred data. PADDING additional bytes are | |
3449 | available in *BUF_P. This is a helper function for | |
3450 | target_fileio_read_alloc; see the declaration of that function for more | |
3451 | information. */ | |
3452 | ||
3453 | static LONGEST | |
3454 | target_fileio_read_alloc_1 (const char *filename, | |
3455 | gdb_byte **buf_p, int padding) | |
3456 | { | |
3457 | struct cleanup *close_cleanup; | |
3458 | size_t buf_alloc, buf_pos; | |
3459 | gdb_byte *buf; | |
3460 | LONGEST n; | |
3461 | int fd; | |
3462 | int target_errno; | |
3463 | ||
3464 | fd = target_fileio_open (filename, FILEIO_O_RDONLY, 0700, &target_errno); | |
3465 | if (fd == -1) | |
3466 | return -1; | |
3467 | ||
3468 | close_cleanup = make_cleanup (target_fileio_close_cleanup, &fd); | |
3469 | ||
3470 | /* Start by reading up to 4K at a time. The target will throttle | |
3471 | this number down if necessary. */ | |
3472 | buf_alloc = 4096; | |
3473 | buf = xmalloc (buf_alloc); | |
3474 | buf_pos = 0; | |
3475 | while (1) | |
3476 | { | |
3477 | n = target_fileio_pread (fd, &buf[buf_pos], | |
3478 | buf_alloc - buf_pos - padding, buf_pos, | |
3479 | &target_errno); | |
3480 | if (n < 0) | |
3481 | { | |
3482 | /* An error occurred. */ | |
3483 | do_cleanups (close_cleanup); | |
3484 | xfree (buf); | |
3485 | return -1; | |
3486 | } | |
3487 | else if (n == 0) | |
3488 | { | |
3489 | /* Read all there was. */ | |
3490 | do_cleanups (close_cleanup); | |
3491 | if (buf_pos == 0) | |
3492 | xfree (buf); | |
3493 | else | |
3494 | *buf_p = buf; | |
3495 | return buf_pos; | |
3496 | } | |
3497 | ||
3498 | buf_pos += n; | |
3499 | ||
3500 | /* If the buffer is filling up, expand it. */ | |
3501 | if (buf_alloc < buf_pos * 2) | |
3502 | { | |
3503 | buf_alloc *= 2; | |
3504 | buf = xrealloc (buf, buf_alloc); | |
3505 | } | |
3506 | ||
3507 | QUIT; | |
3508 | } | |
3509 | } | |
3510 | ||
3511 | /* Read target file FILENAME. Store the result in *BUF_P and return | |
3512 | the size of the transferred data. See the declaration in "target.h" | |
3513 | function for more information about the return value. */ | |
3514 | ||
3515 | LONGEST | |
3516 | target_fileio_read_alloc (const char *filename, gdb_byte **buf_p) | |
3517 | { | |
3518 | return target_fileio_read_alloc_1 (filename, buf_p, 0); | |
3519 | } | |
3520 | ||
3521 | /* Read target file FILENAME. The result is NUL-terminated and | |
3522 | returned as a string, allocated using xmalloc. If an error occurs | |
3523 | or the transfer is unsupported, NULL is returned. Empty objects | |
3524 | are returned as allocated but empty strings. A warning is issued | |
3525 | if the result contains any embedded NUL bytes. */ | |
3526 | ||
3527 | char * | |
3528 | target_fileio_read_stralloc (const char *filename) | |
3529 | { | |
0c1f71e7 | 3530 | char *buffer; |
7313baad UW |
3531 | LONGEST i, transferred; |
3532 | ||
0c1f71e7 PA |
3533 | transferred = target_fileio_read_alloc_1 (filename, |
3534 | (gdb_byte **) &buffer, 1); | |
7313baad UW |
3535 | |
3536 | if (transferred < 0) | |
3537 | return NULL; | |
3538 | ||
3539 | if (transferred == 0) | |
3540 | return xstrdup (""); | |
3541 | ||
3542 | buffer[transferred] = 0; | |
3543 | ||
3544 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
3545 | for (i = strlen (buffer); i < transferred; i++) | |
3546 | if (buffer[i] != 0) | |
3547 | { | |
3548 | warning (_("target file %s " | |
3549 | "contained unexpected null characters"), | |
3550 | filename); | |
3551 | break; | |
3552 | } | |
3553 | ||
0c1f71e7 | 3554 | return buffer; |
7313baad UW |
3555 | } |
3556 | ||
3557 | ||
e0d24f8d WZ |
3558 | static int |
3559 | default_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
3560 | { | |
f5656ead | 3561 | return (len <= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT); |
ccaa32c7 GS |
3562 | } |
3563 | ||
5009afc5 AS |
3564 | static int |
3565 | default_watchpoint_addr_within_range (struct target_ops *target, | |
3566 | CORE_ADDR addr, | |
3567 | CORE_ADDR start, int length) | |
3568 | { | |
3569 | return addr >= start && addr < start + length; | |
3570 | } | |
3571 | ||
c2250ad1 UW |
3572 | static struct gdbarch * |
3573 | default_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
3574 | { | |
f5656ead | 3575 | return target_gdbarch (); |
c2250ad1 UW |
3576 | } |
3577 | ||
c906108c | 3578 | static int |
fba45db2 | 3579 | return_zero (void) |
c906108c SS |
3580 | { |
3581 | return 0; | |
3582 | } | |
3583 | ||
3584 | static int | |
fba45db2 | 3585 | return_one (void) |
c906108c SS |
3586 | { |
3587 | return 1; | |
3588 | } | |
3589 | ||
ccaa32c7 GS |
3590 | static int |
3591 | return_minus_one (void) | |
3592 | { | |
3593 | return -1; | |
3594 | } | |
3595 | ||
7a292a7a SS |
3596 | /* Find a single runnable target in the stack and return it. If for |
3597 | some reason there is more than one, return NULL. */ | |
3598 | ||
3599 | struct target_ops * | |
fba45db2 | 3600 | find_run_target (void) |
7a292a7a SS |
3601 | { |
3602 | struct target_ops **t; | |
3603 | struct target_ops *runable = NULL; | |
3604 | int count; | |
c5aa993b | 3605 | |
7a292a7a | 3606 | count = 0; |
c5aa993b | 3607 | |
7a292a7a SS |
3608 | for (t = target_structs; t < target_structs + target_struct_size; ++t) |
3609 | { | |
c5aa993b | 3610 | if ((*t)->to_can_run && target_can_run (*t)) |
7a292a7a SS |
3611 | { |
3612 | runable = *t; | |
3613 | ++count; | |
3614 | } | |
3615 | } | |
c5aa993b | 3616 | |
7a292a7a SS |
3617 | return (count == 1 ? runable : NULL); |
3618 | } | |
3619 | ||
ed9a39eb JM |
3620 | /* |
3621 | * Find the next target down the stack from the specified target. | |
3622 | */ | |
3623 | ||
3624 | struct target_ops * | |
fba45db2 | 3625 | find_target_beneath (struct target_ops *t) |
ed9a39eb | 3626 | { |
258b763a | 3627 | return t->beneath; |
ed9a39eb JM |
3628 | } |
3629 | ||
c906108c SS |
3630 | \f |
3631 | /* The inferior process has died. Long live the inferior! */ | |
3632 | ||
3633 | void | |
fba45db2 | 3634 | generic_mourn_inferior (void) |
c906108c | 3635 | { |
7f9f62ba | 3636 | ptid_t ptid; |
c906108c | 3637 | |
7f9f62ba | 3638 | ptid = inferior_ptid; |
39f77062 | 3639 | inferior_ptid = null_ptid; |
7f9f62ba | 3640 | |
f59f708a PA |
3641 | /* Mark breakpoints uninserted in case something tries to delete a |
3642 | breakpoint while we delete the inferior's threads (which would | |
3643 | fail, since the inferior is long gone). */ | |
3644 | mark_breakpoints_out (); | |
3645 | ||
7f9f62ba PA |
3646 | if (!ptid_equal (ptid, null_ptid)) |
3647 | { | |
3648 | int pid = ptid_get_pid (ptid); | |
6c95b8df | 3649 | exit_inferior (pid); |
7f9f62ba PA |
3650 | } |
3651 | ||
f59f708a PA |
3652 | /* Note this wipes step-resume breakpoints, so needs to be done |
3653 | after exit_inferior, which ends up referencing the step-resume | |
3654 | breakpoints through clear_thread_inferior_resources. */ | |
c906108c | 3655 | breakpoint_init_inferior (inf_exited); |
f59f708a | 3656 | |
c906108c SS |
3657 | registers_changed (); |
3658 | ||
c906108c SS |
3659 | reopen_exec_file (); |
3660 | reinit_frame_cache (); | |
3661 | ||
9a4105ab AC |
3662 | if (deprecated_detach_hook) |
3663 | deprecated_detach_hook (); | |
c906108c SS |
3664 | } |
3665 | \f | |
fd0a2a6f MK |
3666 | /* Convert a normal process ID to a string. Returns the string in a |
3667 | static buffer. */ | |
c906108c SS |
3668 | |
3669 | char * | |
39f77062 | 3670 | normal_pid_to_str (ptid_t ptid) |
c906108c | 3671 | { |
fd0a2a6f | 3672 | static char buf[32]; |
c906108c | 3673 | |
5fff8fc0 | 3674 | xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid)); |
c906108c SS |
3675 | return buf; |
3676 | } | |
3677 | ||
2c0b251b | 3678 | static char * |
117de6a9 PA |
3679 | dummy_pid_to_str (struct target_ops *ops, ptid_t ptid) |
3680 | { | |
3681 | return normal_pid_to_str (ptid); | |
3682 | } | |
3683 | ||
9b4eba8e HZ |
3684 | /* Error-catcher for target_find_memory_regions. */ |
3685 | static int | |
b8edc417 | 3686 | dummy_find_memory_regions (find_memory_region_ftype ignore1, void *ignore2) |
be4d1333 | 3687 | { |
9b4eba8e | 3688 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3689 | return 0; |
3690 | } | |
3691 | ||
9b4eba8e HZ |
3692 | /* Error-catcher for target_make_corefile_notes. */ |
3693 | static char * | |
3694 | dummy_make_corefile_notes (bfd *ignore1, int *ignore2) | |
be4d1333 | 3695 | { |
9b4eba8e | 3696 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3697 | return NULL; |
3698 | } | |
3699 | ||
6b04bdb7 MS |
3700 | /* Error-catcher for target_get_bookmark. */ |
3701 | static gdb_byte * | |
3702 | dummy_get_bookmark (char *ignore1, int ignore2) | |
3703 | { | |
3704 | tcomplain (); | |
3705 | return NULL; | |
3706 | } | |
3707 | ||
3708 | /* Error-catcher for target_goto_bookmark. */ | |
3709 | static void | |
3710 | dummy_goto_bookmark (gdb_byte *ignore, int from_tty) | |
3711 | { | |
3712 | tcomplain (); | |
3713 | } | |
3714 | ||
c906108c SS |
3715 | /* Set up the handful of non-empty slots needed by the dummy target |
3716 | vector. */ | |
3717 | ||
3718 | static void | |
fba45db2 | 3719 | init_dummy_target (void) |
c906108c SS |
3720 | { |
3721 | dummy_target.to_shortname = "None"; | |
3722 | dummy_target.to_longname = "None"; | |
3723 | dummy_target.to_doc = ""; | |
3724 | dummy_target.to_attach = find_default_attach; | |
136d6dae VP |
3725 | dummy_target.to_detach = |
3726 | (void (*)(struct target_ops *, char *, int))target_ignore; | |
c906108c | 3727 | dummy_target.to_create_inferior = find_default_create_inferior; |
b84876c2 PA |
3728 | dummy_target.to_can_async_p = find_default_can_async_p; |
3729 | dummy_target.to_is_async_p = find_default_is_async_p; | |
9908b566 | 3730 | dummy_target.to_supports_non_stop = find_default_supports_non_stop; |
03583c20 UW |
3731 | dummy_target.to_supports_disable_randomization |
3732 | = find_default_supports_disable_randomization; | |
117de6a9 | 3733 | dummy_target.to_pid_to_str = dummy_pid_to_str; |
c906108c | 3734 | dummy_target.to_stratum = dummy_stratum; |
be4d1333 MS |
3735 | dummy_target.to_find_memory_regions = dummy_find_memory_regions; |
3736 | dummy_target.to_make_corefile_notes = dummy_make_corefile_notes; | |
6b04bdb7 MS |
3737 | dummy_target.to_get_bookmark = dummy_get_bookmark; |
3738 | dummy_target.to_goto_bookmark = dummy_goto_bookmark; | |
0b603eba | 3739 | dummy_target.to_xfer_partial = default_xfer_partial; |
c35b1492 PA |
3740 | dummy_target.to_has_all_memory = (int (*) (struct target_ops *)) return_zero; |
3741 | dummy_target.to_has_memory = (int (*) (struct target_ops *)) return_zero; | |
3742 | dummy_target.to_has_stack = (int (*) (struct target_ops *)) return_zero; | |
3743 | dummy_target.to_has_registers = (int (*) (struct target_ops *)) return_zero; | |
aeaec162 TT |
3744 | dummy_target.to_has_execution |
3745 | = (int (*) (struct target_ops *, ptid_t)) return_zero; | |
7155de5a HZ |
3746 | dummy_target.to_stopped_by_watchpoint = return_zero; |
3747 | dummy_target.to_stopped_data_address = | |
3748 | (int (*) (struct target_ops *, CORE_ADDR *)) return_zero; | |
c906108c SS |
3749 | dummy_target.to_magic = OPS_MAGIC; |
3750 | } | |
c906108c | 3751 | \f |
c906108c | 3752 | static void |
fba45db2 | 3753 | debug_to_open (char *args, int from_tty) |
c906108c SS |
3754 | { |
3755 | debug_target.to_open (args, from_tty); | |
3756 | ||
96baa820 | 3757 | fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty); |
c906108c SS |
3758 | } |
3759 | ||
f1c07ab0 AC |
3760 | void |
3761 | target_close (struct target_ops *targ, int quitting) | |
3762 | { | |
3763 | if (targ->to_xclose != NULL) | |
3764 | targ->to_xclose (targ, quitting); | |
3765 | else if (targ->to_close != NULL) | |
3766 | targ->to_close (quitting); | |
947b8855 PA |
3767 | |
3768 | if (targetdebug) | |
3769 | fprintf_unfiltered (gdb_stdlog, "target_close (%d)\n", quitting); | |
f1c07ab0 AC |
3770 | } |
3771 | ||
136d6dae VP |
3772 | void |
3773 | target_attach (char *args, int from_tty) | |
3774 | { | |
3775 | struct target_ops *t; | |
5d502164 | 3776 | |
136d6dae VP |
3777 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3778 | { | |
3779 | if (t->to_attach != NULL) | |
3780 | { | |
3781 | t->to_attach (t, args, from_tty); | |
947b8855 PA |
3782 | if (targetdebug) |
3783 | fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n", | |
3784 | args, from_tty); | |
136d6dae VP |
3785 | return; |
3786 | } | |
3787 | } | |
3788 | ||
3789 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 3790 | _("could not find a target to attach")); |
136d6dae VP |
3791 | } |
3792 | ||
28439f5e PA |
3793 | int |
3794 | target_thread_alive (ptid_t ptid) | |
c906108c | 3795 | { |
28439f5e | 3796 | struct target_ops *t; |
5d502164 | 3797 | |
28439f5e PA |
3798 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3799 | { | |
3800 | if (t->to_thread_alive != NULL) | |
3801 | { | |
3802 | int retval; | |
c906108c | 3803 | |
28439f5e PA |
3804 | retval = t->to_thread_alive (t, ptid); |
3805 | if (targetdebug) | |
3806 | fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n", | |
3807 | PIDGET (ptid), retval); | |
3808 | ||
3809 | return retval; | |
3810 | } | |
3811 | } | |
3812 | ||
3813 | return 0; | |
3814 | } | |
3815 | ||
3816 | void | |
3817 | target_find_new_threads (void) | |
3818 | { | |
3819 | struct target_ops *t; | |
5d502164 | 3820 | |
28439f5e PA |
3821 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3822 | { | |
3823 | if (t->to_find_new_threads != NULL) | |
3824 | { | |
3825 | t->to_find_new_threads (t); | |
3826 | if (targetdebug) | |
3827 | fprintf_unfiltered (gdb_stdlog, "target_find_new_threads ()\n"); | |
3828 | ||
3829 | return; | |
3830 | } | |
3831 | } | |
c906108c SS |
3832 | } |
3833 | ||
d914c394 SS |
3834 | void |
3835 | target_stop (ptid_t ptid) | |
3836 | { | |
3837 | if (!may_stop) | |
3838 | { | |
3839 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3840 | return; | |
3841 | } | |
3842 | ||
3843 | (*current_target.to_stop) (ptid); | |
3844 | } | |
3845 | ||
c906108c | 3846 | static void |
28439f5e | 3847 | debug_to_post_attach (int pid) |
c906108c | 3848 | { |
28439f5e | 3849 | debug_target.to_post_attach (pid); |
c906108c | 3850 | |
28439f5e | 3851 | fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid); |
c906108c SS |
3852 | } |
3853 | ||
f00150c9 DE |
3854 | /* Return a pretty printed form of target_waitstatus. |
3855 | Space for the result is malloc'd, caller must free. */ | |
c906108c | 3856 | |
f00150c9 DE |
3857 | char * |
3858 | target_waitstatus_to_string (const struct target_waitstatus *ws) | |
3859 | { | |
3860 | const char *kind_str = "status->kind = "; | |
c906108c | 3861 | |
f00150c9 | 3862 | switch (ws->kind) |
c906108c SS |
3863 | { |
3864 | case TARGET_WAITKIND_EXITED: | |
f00150c9 DE |
3865 | return xstrprintf ("%sexited, status = %d", |
3866 | kind_str, ws->value.integer); | |
c906108c | 3867 | case TARGET_WAITKIND_STOPPED: |
f00150c9 | 3868 | return xstrprintf ("%sstopped, signal = %s", |
2ea28649 | 3869 | kind_str, gdb_signal_to_name (ws->value.sig)); |
c906108c | 3870 | case TARGET_WAITKIND_SIGNALLED: |
f00150c9 | 3871 | return xstrprintf ("%ssignalled, signal = %s", |
2ea28649 | 3872 | kind_str, gdb_signal_to_name (ws->value.sig)); |
c906108c | 3873 | case TARGET_WAITKIND_LOADED: |
f00150c9 | 3874 | return xstrprintf ("%sloaded", kind_str); |
c906108c | 3875 | case TARGET_WAITKIND_FORKED: |
f00150c9 | 3876 | return xstrprintf ("%sforked", kind_str); |
c906108c | 3877 | case TARGET_WAITKIND_VFORKED: |
f00150c9 | 3878 | return xstrprintf ("%svforked", kind_str); |
c906108c | 3879 | case TARGET_WAITKIND_EXECD: |
f00150c9 | 3880 | return xstrprintf ("%sexecd", kind_str); |
87d2d2a4 PA |
3881 | case TARGET_WAITKIND_VFORK_DONE: |
3882 | return xstrprintf ("%svfork-done", kind_str); | |
f00150c9 | 3883 | case TARGET_WAITKIND_SYSCALL_ENTRY: |
a96d9b2e | 3884 | return xstrprintf ("%sentered syscall", kind_str); |
f00150c9 | 3885 | case TARGET_WAITKIND_SYSCALL_RETURN: |
a96d9b2e | 3886 | return xstrprintf ("%sexited syscall", kind_str); |
c906108c | 3887 | case TARGET_WAITKIND_SPURIOUS: |
f00150c9 DE |
3888 | return xstrprintf ("%sspurious", kind_str); |
3889 | case TARGET_WAITKIND_IGNORE: | |
3890 | return xstrprintf ("%signore", kind_str); | |
3891 | case TARGET_WAITKIND_NO_HISTORY: | |
3892 | return xstrprintf ("%sno-history", kind_str); | |
0c94aa73 PA |
3893 | case TARGET_WAITKIND_NO_RESUMED: |
3894 | return xstrprintf ("%sno-resumed", kind_str); | |
c906108c | 3895 | default: |
f00150c9 | 3896 | return xstrprintf ("%sunknown???", kind_str); |
c906108c | 3897 | } |
f00150c9 DE |
3898 | } |
3899 | ||
09826ec5 PA |
3900 | /* Concatenate ELEM to LIST, a comma separate list, and return the |
3901 | result. The LIST incoming argument is released. */ | |
3902 | ||
3903 | static char * | |
3904 | str_comma_list_concat_elem (char *list, const char *elem) | |
3905 | { | |
3906 | if (list == NULL) | |
3907 | return xstrdup (elem); | |
3908 | else | |
3909 | return reconcat (list, list, ", ", elem, (char *) NULL); | |
3910 | } | |
3911 | ||
3912 | /* Helper for target_options_to_string. If OPT is present in | |
3913 | TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET. | |
3914 | Returns the new resulting string. OPT is removed from | |
3915 | TARGET_OPTIONS. */ | |
3916 | ||
3917 | static char * | |
3918 | do_option (int *target_options, char *ret, | |
3919 | int opt, char *opt_str) | |
3920 | { | |
3921 | if ((*target_options & opt) != 0) | |
3922 | { | |
3923 | ret = str_comma_list_concat_elem (ret, opt_str); | |
3924 | *target_options &= ~opt; | |
3925 | } | |
3926 | ||
3927 | return ret; | |
3928 | } | |
3929 | ||
3930 | char * | |
3931 | target_options_to_string (int target_options) | |
3932 | { | |
3933 | char *ret = NULL; | |
3934 | ||
3935 | #define DO_TARG_OPTION(OPT) \ | |
3936 | ret = do_option (&target_options, ret, OPT, #OPT) | |
3937 | ||
3938 | DO_TARG_OPTION (TARGET_WNOHANG); | |
3939 | ||
3940 | if (target_options != 0) | |
3941 | ret = str_comma_list_concat_elem (ret, "unknown???"); | |
3942 | ||
3943 | if (ret == NULL) | |
3944 | ret = xstrdup (""); | |
3945 | return ret; | |
3946 | } | |
3947 | ||
bf0c5130 | 3948 | static void |
56be3814 UW |
3949 | debug_print_register (const char * func, |
3950 | struct regcache *regcache, int regno) | |
bf0c5130 | 3951 | { |
f8d29908 | 3952 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
5d502164 | 3953 | |
bf0c5130 | 3954 | fprintf_unfiltered (gdb_stdlog, "%s ", func); |
f8d29908 | 3955 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) |
f8d29908 UW |
3956 | && gdbarch_register_name (gdbarch, regno) != NULL |
3957 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') | |
3958 | fprintf_unfiltered (gdb_stdlog, "(%s)", | |
3959 | gdbarch_register_name (gdbarch, regno)); | |
bf0c5130 AC |
3960 | else |
3961 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
0ff58721 | 3962 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) |
bf0c5130 | 3963 | { |
e17a4113 | 3964 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
f8d29908 | 3965 | int i, size = register_size (gdbarch, regno); |
e362b510 | 3966 | gdb_byte buf[MAX_REGISTER_SIZE]; |
5d502164 | 3967 | |
0ff58721 | 3968 | regcache_raw_collect (regcache, regno, buf); |
bf0c5130 | 3969 | fprintf_unfiltered (gdb_stdlog, " = "); |
81c4a259 | 3970 | for (i = 0; i < size; i++) |
bf0c5130 AC |
3971 | { |
3972 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
3973 | } | |
81c4a259 | 3974 | if (size <= sizeof (LONGEST)) |
bf0c5130 | 3975 | { |
e17a4113 | 3976 | ULONGEST val = extract_unsigned_integer (buf, size, byte_order); |
5d502164 | 3977 | |
0b1553bc UW |
3978 | fprintf_unfiltered (gdb_stdlog, " %s %s", |
3979 | core_addr_to_string_nz (val), plongest (val)); | |
bf0c5130 AC |
3980 | } |
3981 | } | |
3982 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
3983 | } | |
3984 | ||
28439f5e PA |
3985 | void |
3986 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 3987 | { |
28439f5e | 3988 | struct target_ops *t; |
5d502164 | 3989 | |
28439f5e PA |
3990 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3991 | { | |
3992 | if (t->to_fetch_registers != NULL) | |
3993 | { | |
3994 | t->to_fetch_registers (t, regcache, regno); | |
3995 | if (targetdebug) | |
3996 | debug_print_register ("target_fetch_registers", regcache, regno); | |
3997 | return; | |
3998 | } | |
3999 | } | |
c906108c SS |
4000 | } |
4001 | ||
28439f5e PA |
4002 | void |
4003 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 4004 | { |
28439f5e | 4005 | struct target_ops *t; |
5d502164 | 4006 | |
d914c394 SS |
4007 | if (!may_write_registers) |
4008 | error (_("Writing to registers is not allowed (regno %d)"), regno); | |
4009 | ||
28439f5e PA |
4010 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
4011 | { | |
4012 | if (t->to_store_registers != NULL) | |
4013 | { | |
4014 | t->to_store_registers (t, regcache, regno); | |
4015 | if (targetdebug) | |
4016 | { | |
4017 | debug_print_register ("target_store_registers", regcache, regno); | |
4018 | } | |
4019 | return; | |
4020 | } | |
4021 | } | |
4022 | ||
4023 | noprocess (); | |
c906108c SS |
4024 | } |
4025 | ||
dc146f7c VP |
4026 | int |
4027 | target_core_of_thread (ptid_t ptid) | |
4028 | { | |
4029 | struct target_ops *t; | |
4030 | ||
4031 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4032 | { | |
4033 | if (t->to_core_of_thread != NULL) | |
4034 | { | |
4035 | int retval = t->to_core_of_thread (t, ptid); | |
5d502164 | 4036 | |
dc146f7c | 4037 | if (targetdebug) |
3e43a32a MS |
4038 | fprintf_unfiltered (gdb_stdlog, |
4039 | "target_core_of_thread (%d) = %d\n", | |
dc146f7c VP |
4040 | PIDGET (ptid), retval); |
4041 | return retval; | |
4042 | } | |
4043 | } | |
4044 | ||
4045 | return -1; | |
4046 | } | |
4047 | ||
4a5e7a5b PA |
4048 | int |
4049 | target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
4050 | { | |
4051 | struct target_ops *t; | |
4052 | ||
4053 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4054 | { | |
4055 | if (t->to_verify_memory != NULL) | |
4056 | { | |
4057 | int retval = t->to_verify_memory (t, data, memaddr, size); | |
5d502164 | 4058 | |
4a5e7a5b | 4059 | if (targetdebug) |
3e43a32a MS |
4060 | fprintf_unfiltered (gdb_stdlog, |
4061 | "target_verify_memory (%s, %s) = %d\n", | |
f5656ead | 4062 | paddress (target_gdbarch (), memaddr), |
4a5e7a5b PA |
4063 | pulongest (size), |
4064 | retval); | |
4065 | return retval; | |
4066 | } | |
4067 | } | |
4068 | ||
4069 | tcomplain (); | |
4070 | } | |
4071 | ||
9c06b0b4 TJB |
4072 | /* The documentation for this function is in its prototype declaration in |
4073 | target.h. */ | |
4074 | ||
4075 | int | |
4076 | target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
4077 | { | |
4078 | struct target_ops *t; | |
4079 | ||
4080 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4081 | if (t->to_insert_mask_watchpoint != NULL) | |
4082 | { | |
4083 | int ret; | |
4084 | ||
4085 | ret = t->to_insert_mask_watchpoint (t, addr, mask, rw); | |
4086 | ||
4087 | if (targetdebug) | |
4088 | fprintf_unfiltered (gdb_stdlog, "\ | |
4089 | target_insert_mask_watchpoint (%s, %s, %d) = %d\n", | |
4090 | core_addr_to_string (addr), | |
4091 | core_addr_to_string (mask), rw, ret); | |
4092 | ||
4093 | return ret; | |
4094 | } | |
4095 | ||
4096 | return 1; | |
4097 | } | |
4098 | ||
4099 | /* The documentation for this function is in its prototype declaration in | |
4100 | target.h. */ | |
4101 | ||
4102 | int | |
4103 | target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
4104 | { | |
4105 | struct target_ops *t; | |
4106 | ||
4107 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4108 | if (t->to_remove_mask_watchpoint != NULL) | |
4109 | { | |
4110 | int ret; | |
4111 | ||
4112 | ret = t->to_remove_mask_watchpoint (t, addr, mask, rw); | |
4113 | ||
4114 | if (targetdebug) | |
4115 | fprintf_unfiltered (gdb_stdlog, "\ | |
4116 | target_remove_mask_watchpoint (%s, %s, %d) = %d\n", | |
4117 | core_addr_to_string (addr), | |
4118 | core_addr_to_string (mask), rw, ret); | |
4119 | ||
4120 | return ret; | |
4121 | } | |
4122 | ||
4123 | return 1; | |
4124 | } | |
4125 | ||
4126 | /* The documentation for this function is in its prototype declaration | |
4127 | in target.h. */ | |
4128 | ||
4129 | int | |
4130 | target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask) | |
4131 | { | |
4132 | struct target_ops *t; | |
4133 | ||
4134 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4135 | if (t->to_masked_watch_num_registers != NULL) | |
4136 | return t->to_masked_watch_num_registers (t, addr, mask); | |
4137 | ||
4138 | return -1; | |
4139 | } | |
4140 | ||
f1310107 TJB |
4141 | /* The documentation for this function is in its prototype declaration |
4142 | in target.h. */ | |
4143 | ||
4144 | int | |
4145 | target_ranged_break_num_registers (void) | |
4146 | { | |
4147 | struct target_ops *t; | |
4148 | ||
4149 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
4150 | if (t->to_ranged_break_num_registers != NULL) | |
4151 | return t->to_ranged_break_num_registers (t); | |
4152 | ||
4153 | return -1; | |
4154 | } | |
4155 | ||
c906108c | 4156 | static void |
316f2060 | 4157 | debug_to_prepare_to_store (struct regcache *regcache) |
c906108c | 4158 | { |
316f2060 | 4159 | debug_target.to_prepare_to_store (regcache); |
c906108c | 4160 | |
96baa820 | 4161 | fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n"); |
c906108c SS |
4162 | } |
4163 | ||
4164 | static int | |
961cb7b5 | 4165 | deprecated_debug_xfer_memory (CORE_ADDR memaddr, bfd_byte *myaddr, int len, |
c8e73a31 AC |
4166 | int write, struct mem_attrib *attrib, |
4167 | struct target_ops *target) | |
c906108c SS |
4168 | { |
4169 | int retval; | |
4170 | ||
c8e73a31 AC |
4171 | retval = debug_target.deprecated_xfer_memory (memaddr, myaddr, len, write, |
4172 | attrib, target); | |
c906108c | 4173 | |
96baa820 | 4174 | fprintf_unfiltered (gdb_stdlog, |
53b71562 | 4175 | "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d", |
f5656ead | 4176 | paddress (target_gdbarch (), memaddr), len, |
5af949e3 | 4177 | write ? "write" : "read", retval); |
c906108c | 4178 | |
c906108c SS |
4179 | if (retval > 0) |
4180 | { | |
4181 | int i; | |
4182 | ||
96baa820 | 4183 | fputs_unfiltered (", bytes =", gdb_stdlog); |
c906108c SS |
4184 | for (i = 0; i < retval; i++) |
4185 | { | |
53b71562 | 4186 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
333dabeb DJ |
4187 | { |
4188 | if (targetdebug < 2 && i > 0) | |
4189 | { | |
4190 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
4191 | break; | |
4192 | } | |
4193 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
4194 | } | |
2bc416ba | 4195 | |
96baa820 | 4196 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
c906108c SS |
4197 | } |
4198 | } | |
4199 | ||
96baa820 | 4200 | fputc_unfiltered ('\n', gdb_stdlog); |
c906108c SS |
4201 | |
4202 | return retval; | |
4203 | } | |
4204 | ||
4205 | static void | |
fba45db2 | 4206 | debug_to_files_info (struct target_ops *target) |
c906108c SS |
4207 | { |
4208 | debug_target.to_files_info (target); | |
4209 | ||
96baa820 | 4210 | fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n"); |
c906108c SS |
4211 | } |
4212 | ||
4213 | static int | |
a6d9a66e UW |
4214 | debug_to_insert_breakpoint (struct gdbarch *gdbarch, |
4215 | struct bp_target_info *bp_tgt) | |
c906108c SS |
4216 | { |
4217 | int retval; | |
4218 | ||
a6d9a66e | 4219 | retval = debug_target.to_insert_breakpoint (gdbarch, bp_tgt); |
c906108c | 4220 | |
96baa820 | 4221 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
4222 | "target_insert_breakpoint (%s, xxx) = %ld\n", |
4223 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 4224 | (unsigned long) retval); |
c906108c SS |
4225 | return retval; |
4226 | } | |
4227 | ||
4228 | static int | |
a6d9a66e UW |
4229 | debug_to_remove_breakpoint (struct gdbarch *gdbarch, |
4230 | struct bp_target_info *bp_tgt) | |
c906108c SS |
4231 | { |
4232 | int retval; | |
4233 | ||
a6d9a66e | 4234 | retval = debug_target.to_remove_breakpoint (gdbarch, bp_tgt); |
c906108c | 4235 | |
96baa820 | 4236 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
4237 | "target_remove_breakpoint (%s, xxx) = %ld\n", |
4238 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 4239 | (unsigned long) retval); |
c906108c SS |
4240 | return retval; |
4241 | } | |
4242 | ||
ccaa32c7 GS |
4243 | static int |
4244 | debug_to_can_use_hw_breakpoint (int type, int cnt, int from_tty) | |
4245 | { | |
4246 | int retval; | |
4247 | ||
4248 | retval = debug_target.to_can_use_hw_breakpoint (type, cnt, from_tty); | |
4249 | ||
4250 | fprintf_unfiltered (gdb_stdlog, | |
4251 | "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n", | |
4252 | (unsigned long) type, | |
4253 | (unsigned long) cnt, | |
4254 | (unsigned long) from_tty, | |
4255 | (unsigned long) retval); | |
4256 | return retval; | |
4257 | } | |
4258 | ||
e0d24f8d WZ |
4259 | static int |
4260 | debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
4261 | { | |
4262 | CORE_ADDR retval; | |
4263 | ||
4264 | retval = debug_target.to_region_ok_for_hw_watchpoint (addr, len); | |
4265 | ||
4266 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4267 | "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n", |
4268 | core_addr_to_string (addr), (unsigned long) len, | |
4269 | core_addr_to_string (retval)); | |
e0d24f8d WZ |
4270 | return retval; |
4271 | } | |
4272 | ||
0cf6dd15 TJB |
4273 | static int |
4274 | debug_to_can_accel_watchpoint_condition (CORE_ADDR addr, int len, int rw, | |
4275 | struct expression *cond) | |
4276 | { | |
4277 | int retval; | |
4278 | ||
3e43a32a MS |
4279 | retval = debug_target.to_can_accel_watchpoint_condition (addr, len, |
4280 | rw, cond); | |
0cf6dd15 TJB |
4281 | |
4282 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
4283 | "target_can_accel_watchpoint_condition " |
4284 | "(%s, %d, %d, %s) = %ld\n", | |
bd91e7ae OS |
4285 | core_addr_to_string (addr), len, rw, |
4286 | host_address_to_string (cond), (unsigned long) retval); | |
0cf6dd15 TJB |
4287 | return retval; |
4288 | } | |
4289 | ||
ccaa32c7 GS |
4290 | static int |
4291 | debug_to_stopped_by_watchpoint (void) | |
4292 | { | |
4293 | int retval; | |
4294 | ||
4295 | retval = debug_target.to_stopped_by_watchpoint (); | |
4296 | ||
4297 | fprintf_unfiltered (gdb_stdlog, | |
d92524f1 | 4298 | "target_stopped_by_watchpoint () = %ld\n", |
ccaa32c7 GS |
4299 | (unsigned long) retval); |
4300 | return retval; | |
4301 | } | |
4302 | ||
4aa7a7f5 JJ |
4303 | static int |
4304 | debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr) | |
ccaa32c7 | 4305 | { |
4aa7a7f5 | 4306 | int retval; |
ccaa32c7 | 4307 | |
4aa7a7f5 | 4308 | retval = debug_target.to_stopped_data_address (target, addr); |
ccaa32c7 GS |
4309 | |
4310 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4311 | "target_stopped_data_address ([%s]) = %ld\n", |
4312 | core_addr_to_string (*addr), | |
4aa7a7f5 | 4313 | (unsigned long)retval); |
ccaa32c7 GS |
4314 | return retval; |
4315 | } | |
4316 | ||
5009afc5 AS |
4317 | static int |
4318 | debug_to_watchpoint_addr_within_range (struct target_ops *target, | |
4319 | CORE_ADDR addr, | |
4320 | CORE_ADDR start, int length) | |
4321 | { | |
4322 | int retval; | |
4323 | ||
4324 | retval = debug_target.to_watchpoint_addr_within_range (target, addr, | |
4325 | start, length); | |
4326 | ||
4327 | fprintf_filtered (gdb_stdlog, | |
bd91e7ae OS |
4328 | "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n", |
4329 | core_addr_to_string (addr), core_addr_to_string (start), | |
4330 | length, retval); | |
5009afc5 AS |
4331 | return retval; |
4332 | } | |
4333 | ||
ccaa32c7 | 4334 | static int |
a6d9a66e UW |
4335 | debug_to_insert_hw_breakpoint (struct gdbarch *gdbarch, |
4336 | struct bp_target_info *bp_tgt) | |
ccaa32c7 GS |
4337 | { |
4338 | int retval; | |
4339 | ||
a6d9a66e | 4340 | retval = debug_target.to_insert_hw_breakpoint (gdbarch, bp_tgt); |
ccaa32c7 GS |
4341 | |
4342 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4343 | "target_insert_hw_breakpoint (%s, xxx) = %ld\n", |
4344 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
4345 | (unsigned long) retval); |
4346 | return retval; | |
4347 | } | |
4348 | ||
4349 | static int | |
a6d9a66e UW |
4350 | debug_to_remove_hw_breakpoint (struct gdbarch *gdbarch, |
4351 | struct bp_target_info *bp_tgt) | |
ccaa32c7 GS |
4352 | { |
4353 | int retval; | |
4354 | ||
a6d9a66e | 4355 | retval = debug_target.to_remove_hw_breakpoint (gdbarch, bp_tgt); |
ccaa32c7 GS |
4356 | |
4357 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4358 | "target_remove_hw_breakpoint (%s, xxx) = %ld\n", |
4359 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
4360 | (unsigned long) retval); |
4361 | return retval; | |
4362 | } | |
4363 | ||
4364 | static int | |
0cf6dd15 TJB |
4365 | debug_to_insert_watchpoint (CORE_ADDR addr, int len, int type, |
4366 | struct expression *cond) | |
ccaa32c7 GS |
4367 | { |
4368 | int retval; | |
4369 | ||
0cf6dd15 | 4370 | retval = debug_target.to_insert_watchpoint (addr, len, type, cond); |
ccaa32c7 GS |
4371 | |
4372 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4373 | "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n", |
4374 | core_addr_to_string (addr), len, type, | |
4375 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
4376 | return retval; |
4377 | } | |
4378 | ||
4379 | static int | |
0cf6dd15 TJB |
4380 | debug_to_remove_watchpoint (CORE_ADDR addr, int len, int type, |
4381 | struct expression *cond) | |
ccaa32c7 GS |
4382 | { |
4383 | int retval; | |
4384 | ||
0cf6dd15 | 4385 | retval = debug_target.to_remove_watchpoint (addr, len, type, cond); |
ccaa32c7 GS |
4386 | |
4387 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
4388 | "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n", |
4389 | core_addr_to_string (addr), len, type, | |
4390 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
4391 | return retval; |
4392 | } | |
4393 | ||
c906108c | 4394 | static void |
fba45db2 | 4395 | debug_to_terminal_init (void) |
c906108c SS |
4396 | { |
4397 | debug_target.to_terminal_init (); | |
4398 | ||
96baa820 | 4399 | fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n"); |
c906108c SS |
4400 | } |
4401 | ||
4402 | static void | |
fba45db2 | 4403 | debug_to_terminal_inferior (void) |
c906108c SS |
4404 | { |
4405 | debug_target.to_terminal_inferior (); | |
4406 | ||
96baa820 | 4407 | fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n"); |
c906108c SS |
4408 | } |
4409 | ||
4410 | static void | |
fba45db2 | 4411 | debug_to_terminal_ours_for_output (void) |
c906108c SS |
4412 | { |
4413 | debug_target.to_terminal_ours_for_output (); | |
4414 | ||
96baa820 | 4415 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n"); |
c906108c SS |
4416 | } |
4417 | ||
4418 | static void | |
fba45db2 | 4419 | debug_to_terminal_ours (void) |
c906108c SS |
4420 | { |
4421 | debug_target.to_terminal_ours (); | |
4422 | ||
96baa820 | 4423 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n"); |
c906108c SS |
4424 | } |
4425 | ||
a790ad35 SC |
4426 | static void |
4427 | debug_to_terminal_save_ours (void) | |
4428 | { | |
4429 | debug_target.to_terminal_save_ours (); | |
4430 | ||
4431 | fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n"); | |
4432 | } | |
4433 | ||
c906108c | 4434 | static void |
fba45db2 | 4435 | debug_to_terminal_info (char *arg, int from_tty) |
c906108c SS |
4436 | { |
4437 | debug_target.to_terminal_info (arg, from_tty); | |
4438 | ||
96baa820 | 4439 | fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg, |
c906108c SS |
4440 | from_tty); |
4441 | } | |
4442 | ||
c906108c | 4443 | static void |
fba45db2 | 4444 | debug_to_load (char *args, int from_tty) |
c906108c SS |
4445 | { |
4446 | debug_target.to_load (args, from_tty); | |
4447 | ||
96baa820 | 4448 | fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty); |
c906108c SS |
4449 | } |
4450 | ||
c906108c | 4451 | static void |
39f77062 | 4452 | debug_to_post_startup_inferior (ptid_t ptid) |
c906108c | 4453 | { |
39f77062 | 4454 | debug_target.to_post_startup_inferior (ptid); |
c906108c | 4455 | |
96baa820 | 4456 | fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n", |
39f77062 | 4457 | PIDGET (ptid)); |
c906108c SS |
4458 | } |
4459 | ||
77b06cd7 | 4460 | static int |
fba45db2 | 4461 | debug_to_insert_fork_catchpoint (int pid) |
c906108c | 4462 | { |
77b06cd7 TJB |
4463 | int retval; |
4464 | ||
4465 | retval = debug_target.to_insert_fork_catchpoint (pid); | |
4466 | ||
4467 | fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d) = %d\n", | |
4468 | pid, retval); | |
c906108c | 4469 | |
77b06cd7 | 4470 | return retval; |
c906108c SS |
4471 | } |
4472 | ||
4473 | static int | |
fba45db2 | 4474 | debug_to_remove_fork_catchpoint (int pid) |
c906108c | 4475 | { |
c5aa993b | 4476 | int retval; |
c906108c SS |
4477 | |
4478 | retval = debug_target.to_remove_fork_catchpoint (pid); | |
4479 | ||
96baa820 | 4480 | fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n", |
c5aa993b | 4481 | pid, retval); |
c906108c SS |
4482 | |
4483 | return retval; | |
4484 | } | |
4485 | ||
77b06cd7 | 4486 | static int |
fba45db2 | 4487 | debug_to_insert_vfork_catchpoint (int pid) |
c906108c | 4488 | { |
77b06cd7 TJB |
4489 | int retval; |
4490 | ||
4491 | retval = debug_target.to_insert_vfork_catchpoint (pid); | |
c906108c | 4492 | |
77b06cd7 TJB |
4493 | fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d) = %d\n", |
4494 | pid, retval); | |
4495 | ||
4496 | return retval; | |
c906108c SS |
4497 | } |
4498 | ||
4499 | static int | |
fba45db2 | 4500 | debug_to_remove_vfork_catchpoint (int pid) |
c906108c | 4501 | { |
c5aa993b | 4502 | int retval; |
c906108c SS |
4503 | |
4504 | retval = debug_target.to_remove_vfork_catchpoint (pid); | |
4505 | ||
96baa820 | 4506 | fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n", |
c5aa993b | 4507 | pid, retval); |
c906108c SS |
4508 | |
4509 | return retval; | |
4510 | } | |
4511 | ||
77b06cd7 | 4512 | static int |
fba45db2 | 4513 | debug_to_insert_exec_catchpoint (int pid) |
c906108c | 4514 | { |
77b06cd7 TJB |
4515 | int retval; |
4516 | ||
4517 | retval = debug_target.to_insert_exec_catchpoint (pid); | |
c906108c | 4518 | |
77b06cd7 TJB |
4519 | fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d) = %d\n", |
4520 | pid, retval); | |
4521 | ||
4522 | return retval; | |
c906108c SS |
4523 | } |
4524 | ||
4525 | static int | |
fba45db2 | 4526 | debug_to_remove_exec_catchpoint (int pid) |
c906108c | 4527 | { |
c5aa993b | 4528 | int retval; |
c906108c SS |
4529 | |
4530 | retval = debug_target.to_remove_exec_catchpoint (pid); | |
4531 | ||
96baa820 | 4532 | fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n", |
c5aa993b | 4533 | pid, retval); |
c906108c SS |
4534 | |
4535 | return retval; | |
4536 | } | |
4537 | ||
c906108c | 4538 | static int |
fba45db2 | 4539 | debug_to_has_exited (int pid, int wait_status, int *exit_status) |
c906108c | 4540 | { |
c5aa993b | 4541 | int has_exited; |
c906108c SS |
4542 | |
4543 | has_exited = debug_target.to_has_exited (pid, wait_status, exit_status); | |
4544 | ||
96baa820 | 4545 | fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n", |
c5aa993b | 4546 | pid, wait_status, *exit_status, has_exited); |
c906108c SS |
4547 | |
4548 | return has_exited; | |
4549 | } | |
4550 | ||
c906108c | 4551 | static int |
fba45db2 | 4552 | debug_to_can_run (void) |
c906108c SS |
4553 | { |
4554 | int retval; | |
4555 | ||
4556 | retval = debug_target.to_can_run (); | |
4557 | ||
96baa820 | 4558 | fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval); |
c906108c SS |
4559 | |
4560 | return retval; | |
4561 | } | |
4562 | ||
c2250ad1 UW |
4563 | static struct gdbarch * |
4564 | debug_to_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
4565 | { | |
4566 | struct gdbarch *retval; | |
4567 | ||
4568 | retval = debug_target.to_thread_architecture (ops, ptid); | |
4569 | ||
3e43a32a MS |
4570 | fprintf_unfiltered (gdb_stdlog, |
4571 | "target_thread_architecture (%s) = %s [%s]\n", | |
4572 | target_pid_to_str (ptid), | |
4573 | host_address_to_string (retval), | |
c2250ad1 UW |
4574 | gdbarch_bfd_arch_info (retval)->printable_name); |
4575 | return retval; | |
4576 | } | |
4577 | ||
c906108c | 4578 | static void |
94cc34af | 4579 | debug_to_stop (ptid_t ptid) |
c906108c | 4580 | { |
94cc34af | 4581 | debug_target.to_stop (ptid); |
c906108c | 4582 | |
94cc34af PA |
4583 | fprintf_unfiltered (gdb_stdlog, "target_stop (%s)\n", |
4584 | target_pid_to_str (ptid)); | |
c906108c SS |
4585 | } |
4586 | ||
96baa820 JM |
4587 | static void |
4588 | debug_to_rcmd (char *command, | |
d9fcf2fb | 4589 | struct ui_file *outbuf) |
96baa820 JM |
4590 | { |
4591 | debug_target.to_rcmd (command, outbuf); | |
4592 | fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command); | |
4593 | } | |
4594 | ||
c906108c | 4595 | static char * |
fba45db2 | 4596 | debug_to_pid_to_exec_file (int pid) |
c906108c | 4597 | { |
c5aa993b | 4598 | char *exec_file; |
c906108c SS |
4599 | |
4600 | exec_file = debug_target.to_pid_to_exec_file (pid); | |
4601 | ||
96baa820 | 4602 | fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n", |
c5aa993b | 4603 | pid, exec_file); |
c906108c SS |
4604 | |
4605 | return exec_file; | |
4606 | } | |
4607 | ||
c906108c | 4608 | static void |
fba45db2 | 4609 | setup_target_debug (void) |
c906108c SS |
4610 | { |
4611 | memcpy (&debug_target, ¤t_target, sizeof debug_target); | |
4612 | ||
4613 | current_target.to_open = debug_to_open; | |
c906108c | 4614 | current_target.to_post_attach = debug_to_post_attach; |
c906108c | 4615 | current_target.to_prepare_to_store = debug_to_prepare_to_store; |
c8e73a31 | 4616 | current_target.deprecated_xfer_memory = deprecated_debug_xfer_memory; |
c906108c SS |
4617 | current_target.to_files_info = debug_to_files_info; |
4618 | current_target.to_insert_breakpoint = debug_to_insert_breakpoint; | |
4619 | current_target.to_remove_breakpoint = debug_to_remove_breakpoint; | |
ccaa32c7 GS |
4620 | current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint; |
4621 | current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint; | |
4622 | current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint; | |
4623 | current_target.to_insert_watchpoint = debug_to_insert_watchpoint; | |
4624 | current_target.to_remove_watchpoint = debug_to_remove_watchpoint; | |
4625 | current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint; | |
4626 | current_target.to_stopped_data_address = debug_to_stopped_data_address; | |
3e43a32a MS |
4627 | current_target.to_watchpoint_addr_within_range |
4628 | = debug_to_watchpoint_addr_within_range; | |
4629 | current_target.to_region_ok_for_hw_watchpoint | |
4630 | = debug_to_region_ok_for_hw_watchpoint; | |
4631 | current_target.to_can_accel_watchpoint_condition | |
4632 | = debug_to_can_accel_watchpoint_condition; | |
c906108c SS |
4633 | current_target.to_terminal_init = debug_to_terminal_init; |
4634 | current_target.to_terminal_inferior = debug_to_terminal_inferior; | |
3e43a32a MS |
4635 | current_target.to_terminal_ours_for_output |
4636 | = debug_to_terminal_ours_for_output; | |
c906108c | 4637 | current_target.to_terminal_ours = debug_to_terminal_ours; |
a790ad35 | 4638 | current_target.to_terminal_save_ours = debug_to_terminal_save_ours; |
c906108c | 4639 | current_target.to_terminal_info = debug_to_terminal_info; |
c906108c | 4640 | current_target.to_load = debug_to_load; |
c906108c | 4641 | current_target.to_post_startup_inferior = debug_to_post_startup_inferior; |
c906108c SS |
4642 | current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint; |
4643 | current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint; | |
4644 | current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint; | |
4645 | current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint; | |
c906108c SS |
4646 | current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint; |
4647 | current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint; | |
c906108c | 4648 | current_target.to_has_exited = debug_to_has_exited; |
c906108c | 4649 | current_target.to_can_run = debug_to_can_run; |
c906108c | 4650 | current_target.to_stop = debug_to_stop; |
96baa820 | 4651 | current_target.to_rcmd = debug_to_rcmd; |
c906108c | 4652 | current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file; |
c2250ad1 | 4653 | current_target.to_thread_architecture = debug_to_thread_architecture; |
c906108c | 4654 | } |
c906108c | 4655 | \f |
c5aa993b JM |
4656 | |
4657 | static char targ_desc[] = | |
3e43a32a MS |
4658 | "Names of targets and files being debugged.\nShows the entire \ |
4659 | stack of targets currently in use (including the exec-file,\n\ | |
c906108c SS |
4660 | core-file, and process, if any), as well as the symbol file name."; |
4661 | ||
96baa820 JM |
4662 | static void |
4663 | do_monitor_command (char *cmd, | |
4664 | int from_tty) | |
4665 | { | |
2b5fe715 AC |
4666 | if ((current_target.to_rcmd |
4667 | == (void (*) (char *, struct ui_file *)) tcomplain) | |
96baa820 | 4668 | || (current_target.to_rcmd == debug_to_rcmd |
2b5fe715 AC |
4669 | && (debug_target.to_rcmd |
4670 | == (void (*) (char *, struct ui_file *)) tcomplain))) | |
8a3fe4f8 | 4671 | error (_("\"monitor\" command not supported by this target.")); |
96baa820 JM |
4672 | target_rcmd (cmd, gdb_stdtarg); |
4673 | } | |
4674 | ||
87680a14 JB |
4675 | /* Print the name of each layers of our target stack. */ |
4676 | ||
4677 | static void | |
4678 | maintenance_print_target_stack (char *cmd, int from_tty) | |
4679 | { | |
4680 | struct target_ops *t; | |
4681 | ||
4682 | printf_filtered (_("The current target stack is:\n")); | |
4683 | ||
4684 | for (t = target_stack; t != NULL; t = t->beneath) | |
4685 | { | |
4686 | printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname); | |
4687 | } | |
4688 | } | |
4689 | ||
c6ebd6cf VP |
4690 | /* Controls if async mode is permitted. */ |
4691 | int target_async_permitted = 0; | |
4692 | ||
4693 | /* The set command writes to this variable. If the inferior is | |
4694 | executing, linux_nat_async_permitted is *not* updated. */ | |
4695 | static int target_async_permitted_1 = 0; | |
4696 | ||
4697 | static void | |
9401a810 PA |
4698 | set_target_async_command (char *args, int from_tty, |
4699 | struct cmd_list_element *c) | |
c6ebd6cf | 4700 | { |
c35b1492 | 4701 | if (have_live_inferiors ()) |
c6ebd6cf VP |
4702 | { |
4703 | target_async_permitted_1 = target_async_permitted; | |
4704 | error (_("Cannot change this setting while the inferior is running.")); | |
4705 | } | |
4706 | ||
4707 | target_async_permitted = target_async_permitted_1; | |
4708 | } | |
4709 | ||
4710 | static void | |
9401a810 PA |
4711 | show_target_async_command (struct ui_file *file, int from_tty, |
4712 | struct cmd_list_element *c, | |
4713 | const char *value) | |
c6ebd6cf | 4714 | { |
3e43a32a MS |
4715 | fprintf_filtered (file, |
4716 | _("Controlling the inferior in " | |
4717 | "asynchronous mode is %s.\n"), value); | |
c6ebd6cf VP |
4718 | } |
4719 | ||
d914c394 SS |
4720 | /* Temporary copies of permission settings. */ |
4721 | ||
4722 | static int may_write_registers_1 = 1; | |
4723 | static int may_write_memory_1 = 1; | |
4724 | static int may_insert_breakpoints_1 = 1; | |
4725 | static int may_insert_tracepoints_1 = 1; | |
4726 | static int may_insert_fast_tracepoints_1 = 1; | |
4727 | static int may_stop_1 = 1; | |
4728 | ||
4729 | /* Make the user-set values match the real values again. */ | |
4730 | ||
4731 | void | |
4732 | update_target_permissions (void) | |
4733 | { | |
4734 | may_write_registers_1 = may_write_registers; | |
4735 | may_write_memory_1 = may_write_memory; | |
4736 | may_insert_breakpoints_1 = may_insert_breakpoints; | |
4737 | may_insert_tracepoints_1 = may_insert_tracepoints; | |
4738 | may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints; | |
4739 | may_stop_1 = may_stop; | |
4740 | } | |
4741 | ||
4742 | /* The one function handles (most of) the permission flags in the same | |
4743 | way. */ | |
4744 | ||
4745 | static void | |
4746 | set_target_permissions (char *args, int from_tty, | |
4747 | struct cmd_list_element *c) | |
4748 | { | |
4749 | if (target_has_execution) | |
4750 | { | |
4751 | update_target_permissions (); | |
4752 | error (_("Cannot change this setting while the inferior is running.")); | |
4753 | } | |
4754 | ||
4755 | /* Make the real values match the user-changed values. */ | |
4756 | may_write_registers = may_write_registers_1; | |
4757 | may_insert_breakpoints = may_insert_breakpoints_1; | |
4758 | may_insert_tracepoints = may_insert_tracepoints_1; | |
4759 | may_insert_fast_tracepoints = may_insert_fast_tracepoints_1; | |
4760 | may_stop = may_stop_1; | |
4761 | update_observer_mode (); | |
4762 | } | |
4763 | ||
4764 | /* Set memory write permission independently of observer mode. */ | |
4765 | ||
4766 | static void | |
4767 | set_write_memory_permission (char *args, int from_tty, | |
4768 | struct cmd_list_element *c) | |
4769 | { | |
4770 | /* Make the real values match the user-changed values. */ | |
4771 | may_write_memory = may_write_memory_1; | |
4772 | update_observer_mode (); | |
4773 | } | |
4774 | ||
4775 | ||
c906108c | 4776 | void |
fba45db2 | 4777 | initialize_targets (void) |
c906108c SS |
4778 | { |
4779 | init_dummy_target (); | |
4780 | push_target (&dummy_target); | |
4781 | ||
4782 | add_info ("target", target_info, targ_desc); | |
4783 | add_info ("files", target_info, targ_desc); | |
4784 | ||
ccce17b0 | 4785 | add_setshow_zuinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
85c07804 AC |
4786 | Set target debugging."), _("\ |
4787 | Show target debugging."), _("\ | |
333dabeb DJ |
4788 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
4789 | verbose. Changes do not take effect until the next \"run\" or \"target\"\n\ | |
85c07804 | 4790 | command."), |
ccce17b0 YQ |
4791 | NULL, |
4792 | show_targetdebug, | |
4793 | &setdebuglist, &showdebuglist); | |
3a11626d | 4794 | |
2bc416ba | 4795 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
4796 | &trust_readonly, _("\ |
4797 | Set mode for reading from readonly sections."), _("\ | |
4798 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
4799 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
4800 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 4801 | result in significant performance improvement for remote targets."), |
2c5b56ce | 4802 | NULL, |
920d2a44 | 4803 | show_trust_readonly, |
e707bbc2 | 4804 | &setlist, &showlist); |
96baa820 JM |
4805 | |
4806 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 4807 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 4808 | |
87680a14 JB |
4809 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
4810 | _("Print the name of each layer of the internal target stack."), | |
4811 | &maintenanceprintlist); | |
4812 | ||
c6ebd6cf VP |
4813 | add_setshow_boolean_cmd ("target-async", no_class, |
4814 | &target_async_permitted_1, _("\ | |
4815 | Set whether gdb controls the inferior in asynchronous mode."), _("\ | |
4816 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
4817 | Tells gdb whether to control the inferior in asynchronous mode."), | |
9401a810 PA |
4818 | set_target_async_command, |
4819 | show_target_async_command, | |
c6ebd6cf VP |
4820 | &setlist, |
4821 | &showlist); | |
4822 | ||
4e5d721f | 4823 | add_setshow_boolean_cmd ("stack-cache", class_support, |
9cf1b572 | 4824 | &stack_cache_enabled_p_1, _("\ |
4e5d721f DE |
4825 | Set cache use for stack access."), _("\ |
4826 | Show cache use for stack access."), _("\ | |
4827 | When on, use the data cache for all stack access, regardless of any\n\ | |
4828 | configured memory regions. This improves remote performance significantly.\n\ | |
4829 | By default, caching for stack access is on."), | |
4830 | set_stack_cache_enabled_p, | |
4831 | show_stack_cache_enabled_p, | |
4832 | &setlist, &showlist); | |
4833 | ||
d914c394 SS |
4834 | add_setshow_boolean_cmd ("may-write-registers", class_support, |
4835 | &may_write_registers_1, _("\ | |
4836 | Set permission to write into registers."), _("\ | |
4837 | Show permission to write into registers."), _("\ | |
4838 | When this permission is on, GDB may write into the target's registers.\n\ | |
4839 | Otherwise, any sort of write attempt will result in an error."), | |
4840 | set_target_permissions, NULL, | |
4841 | &setlist, &showlist); | |
4842 | ||
4843 | add_setshow_boolean_cmd ("may-write-memory", class_support, | |
4844 | &may_write_memory_1, _("\ | |
4845 | Set permission to write into target memory."), _("\ | |
4846 | Show permission to write into target memory."), _("\ | |
4847 | When this permission is on, GDB may write into the target's memory.\n\ | |
4848 | Otherwise, any sort of write attempt will result in an error."), | |
4849 | set_write_memory_permission, NULL, | |
4850 | &setlist, &showlist); | |
4851 | ||
4852 | add_setshow_boolean_cmd ("may-insert-breakpoints", class_support, | |
4853 | &may_insert_breakpoints_1, _("\ | |
4854 | Set permission to insert breakpoints in the target."), _("\ | |
4855 | Show permission to insert breakpoints in the target."), _("\ | |
4856 | When this permission is on, GDB may insert breakpoints in the program.\n\ | |
4857 | Otherwise, any sort of insertion attempt will result in an error."), | |
4858 | set_target_permissions, NULL, | |
4859 | &setlist, &showlist); | |
4860 | ||
4861 | add_setshow_boolean_cmd ("may-insert-tracepoints", class_support, | |
4862 | &may_insert_tracepoints_1, _("\ | |
4863 | Set permission to insert tracepoints in the target."), _("\ | |
4864 | Show permission to insert tracepoints in the target."), _("\ | |
4865 | When this permission is on, GDB may insert tracepoints in the program.\n\ | |
4866 | Otherwise, any sort of insertion attempt will result in an error."), | |
4867 | set_target_permissions, NULL, | |
4868 | &setlist, &showlist); | |
4869 | ||
4870 | add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support, | |
4871 | &may_insert_fast_tracepoints_1, _("\ | |
4872 | Set permission to insert fast tracepoints in the target."), _("\ | |
4873 | Show permission to insert fast tracepoints in the target."), _("\ | |
4874 | When this permission is on, GDB may insert fast tracepoints.\n\ | |
4875 | Otherwise, any sort of insertion attempt will result in an error."), | |
4876 | set_target_permissions, NULL, | |
4877 | &setlist, &showlist); | |
4878 | ||
4879 | add_setshow_boolean_cmd ("may-interrupt", class_support, | |
4880 | &may_stop_1, _("\ | |
4881 | Set permission to interrupt or signal the target."), _("\ | |
4882 | Show permission to interrupt or signal the target."), _("\ | |
4883 | When this permission is on, GDB may interrupt/stop the target's execution.\n\ | |
4884 | Otherwise, any attempt to interrupt or stop will be ignored."), | |
4885 | set_target_permissions, NULL, | |
4886 | &setlist, &showlist); | |
4887 | ||
4888 | ||
8add0441 | 4889 | target_dcache = dcache_init (); |
c906108c | 4890 | } |