Commit | Line | Data |
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c906108c | 1 | /* Select target systems and architectures at runtime for GDB. |
7998dfc3 | 2 | |
6aba47ca | 3 | Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
7b6bb8da | 4 | 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
f6519ebc | 5 | Free Software Foundation, Inc. |
7998dfc3 | 6 | |
c906108c SS |
7 | Contributed by Cygnus Support. |
8 | ||
c5aa993b | 9 | This file is part of GDB. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is free software; you can redistribute it and/or modify |
12 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 13 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 14 | (at your option) any later version. |
c906108c | 15 | |
c5aa993b JM |
16 | This program is distributed in the hope that it will be useful, |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
c906108c | 20 | |
c5aa993b | 21 | You should have received a copy of the GNU General Public License |
a9762ec7 | 22 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
23 | |
24 | #include "defs.h" | |
25 | #include <errno.h> | |
c906108c SS |
26 | #include "gdb_string.h" |
27 | #include "target.h" | |
28 | #include "gdbcmd.h" | |
29 | #include "symtab.h" | |
30 | #include "inferior.h" | |
31 | #include "bfd.h" | |
32 | #include "symfile.h" | |
33 | #include "objfiles.h" | |
03f2053f | 34 | #include "gdb_wait.h" |
4930751a | 35 | #include "dcache.h" |
c906108c | 36 | #include <signal.h> |
4e052eda | 37 | #include "regcache.h" |
0088c768 | 38 | #include "gdb_assert.h" |
b6591e8b | 39 | #include "gdbcore.h" |
9e35dae4 | 40 | #include "exceptions.h" |
424163ea | 41 | #include "target-descriptions.h" |
e1ac3328 | 42 | #include "gdbthread.h" |
b9db4ced | 43 | #include "solib.h" |
07b82ea5 | 44 | #include "exec.h" |
edb3359d | 45 | #include "inline-frame.h" |
2f4d8875 | 46 | #include "tracepoint.h" |
c906108c | 47 | |
a14ed312 | 48 | static void target_info (char *, int); |
c906108c | 49 | |
a14ed312 | 50 | static void default_terminal_info (char *, int); |
c906108c | 51 | |
5009afc5 AS |
52 | static int default_watchpoint_addr_within_range (struct target_ops *, |
53 | CORE_ADDR, CORE_ADDR, int); | |
54 | ||
e0d24f8d WZ |
55 | static int default_region_ok_for_hw_watchpoint (CORE_ADDR, int); |
56 | ||
a14ed312 | 57 | static int nosymbol (char *, CORE_ADDR *); |
c906108c | 58 | |
c25c4a8b | 59 | static void tcomplain (void) ATTRIBUTE_NORETURN; |
c906108c | 60 | |
a14ed312 | 61 | static int nomemory (CORE_ADDR, char *, int, int, struct target_ops *); |
c906108c | 62 | |
a14ed312 | 63 | static int return_zero (void); |
c906108c | 64 | |
a14ed312 | 65 | static int return_one (void); |
c906108c | 66 | |
ccaa32c7 GS |
67 | static int return_minus_one (void); |
68 | ||
a14ed312 | 69 | void target_ignore (void); |
c906108c | 70 | |
a14ed312 | 71 | static void target_command (char *, int); |
c906108c | 72 | |
a14ed312 | 73 | static struct target_ops *find_default_run_target (char *); |
c906108c | 74 | |
4b8a223f | 75 | static LONGEST default_xfer_partial (struct target_ops *ops, |
0088c768 | 76 | enum target_object object, |
1b0ba102 AC |
77 | const char *annex, gdb_byte *readbuf, |
78 | const gdb_byte *writebuf, | |
8aa91c1e | 79 | ULONGEST offset, LONGEST len); |
0088c768 | 80 | |
cf7a04e8 DJ |
81 | static LONGEST current_xfer_partial (struct target_ops *ops, |
82 | enum target_object object, | |
83 | const char *annex, gdb_byte *readbuf, | |
84 | const gdb_byte *writebuf, | |
85 | ULONGEST offset, LONGEST len); | |
c906108c | 86 | |
cf7a04e8 DJ |
87 | static LONGEST target_xfer_partial (struct target_ops *ops, |
88 | enum target_object object, | |
89 | const char *annex, | |
90 | void *readbuf, const void *writebuf, | |
91 | ULONGEST offset, LONGEST len); | |
c906108c | 92 | |
c2250ad1 UW |
93 | static struct gdbarch *default_thread_architecture (struct target_ops *ops, |
94 | ptid_t ptid); | |
95 | ||
a14ed312 | 96 | static void init_dummy_target (void); |
c906108c | 97 | |
aa869812 AC |
98 | static struct target_ops debug_target; |
99 | ||
a14ed312 | 100 | static void debug_to_open (char *, int); |
c906108c | 101 | |
316f2060 | 102 | static void debug_to_prepare_to_store (struct regcache *); |
c906108c | 103 | |
a14ed312 | 104 | static void debug_to_files_info (struct target_ops *); |
c906108c | 105 | |
a6d9a66e UW |
106 | static int debug_to_insert_breakpoint (struct gdbarch *, |
107 | struct bp_target_info *); | |
c906108c | 108 | |
a6d9a66e UW |
109 | static int debug_to_remove_breakpoint (struct gdbarch *, |
110 | struct bp_target_info *); | |
c906108c | 111 | |
ccaa32c7 GS |
112 | static int debug_to_can_use_hw_breakpoint (int, int, int); |
113 | ||
a6d9a66e UW |
114 | static int debug_to_insert_hw_breakpoint (struct gdbarch *, |
115 | struct bp_target_info *); | |
ccaa32c7 | 116 | |
a6d9a66e UW |
117 | static int debug_to_remove_hw_breakpoint (struct gdbarch *, |
118 | struct bp_target_info *); | |
ccaa32c7 | 119 | |
0cf6dd15 TJB |
120 | static int debug_to_insert_watchpoint (CORE_ADDR, int, int, |
121 | struct expression *); | |
ccaa32c7 | 122 | |
0cf6dd15 TJB |
123 | static int debug_to_remove_watchpoint (CORE_ADDR, int, int, |
124 | struct expression *); | |
ccaa32c7 GS |
125 | |
126 | static int debug_to_stopped_by_watchpoint (void); | |
127 | ||
4aa7a7f5 | 128 | static int debug_to_stopped_data_address (struct target_ops *, CORE_ADDR *); |
ccaa32c7 | 129 | |
5009afc5 AS |
130 | static int debug_to_watchpoint_addr_within_range (struct target_ops *, |
131 | CORE_ADDR, CORE_ADDR, int); | |
132 | ||
e0d24f8d WZ |
133 | static int debug_to_region_ok_for_hw_watchpoint (CORE_ADDR, int); |
134 | ||
0cf6dd15 TJB |
135 | static int debug_to_can_accel_watchpoint_condition (CORE_ADDR, int, int, |
136 | struct expression *); | |
137 | ||
a14ed312 | 138 | static void debug_to_terminal_init (void); |
c906108c | 139 | |
a14ed312 | 140 | static void debug_to_terminal_inferior (void); |
c906108c | 141 | |
a14ed312 | 142 | static void debug_to_terminal_ours_for_output (void); |
c906108c | 143 | |
a790ad35 SC |
144 | static void debug_to_terminal_save_ours (void); |
145 | ||
a14ed312 | 146 | static void debug_to_terminal_ours (void); |
c906108c | 147 | |
a14ed312 | 148 | static void debug_to_terminal_info (char *, int); |
c906108c | 149 | |
a14ed312 | 150 | static void debug_to_load (char *, int); |
c906108c | 151 | |
a14ed312 | 152 | static int debug_to_lookup_symbol (char *, CORE_ADDR *); |
c906108c | 153 | |
a14ed312 | 154 | static int debug_to_can_run (void); |
c906108c | 155 | |
39f77062 | 156 | static void debug_to_notice_signals (ptid_t); |
c906108c | 157 | |
94cc34af | 158 | static void debug_to_stop (ptid_t); |
c906108c | 159 | |
c906108c | 160 | /* Pointer to array of target architecture structures; the size of the |
2bc416ba | 161 | array; the current index into the array; the allocated size of the |
c906108c SS |
162 | array. */ |
163 | struct target_ops **target_structs; | |
164 | unsigned target_struct_size; | |
165 | unsigned target_struct_index; | |
166 | unsigned target_struct_allocsize; | |
167 | #define DEFAULT_ALLOCSIZE 10 | |
168 | ||
169 | /* The initial current target, so that there is always a semi-valid | |
170 | current target. */ | |
171 | ||
172 | static struct target_ops dummy_target; | |
173 | ||
174 | /* Top of target stack. */ | |
175 | ||
258b763a | 176 | static struct target_ops *target_stack; |
c906108c SS |
177 | |
178 | /* The target structure we are currently using to talk to a process | |
179 | or file or whatever "inferior" we have. */ | |
180 | ||
181 | struct target_ops current_target; | |
182 | ||
183 | /* Command list for target. */ | |
184 | ||
185 | static struct cmd_list_element *targetlist = NULL; | |
186 | ||
cf7a04e8 DJ |
187 | /* Nonzero if we should trust readonly sections from the |
188 | executable when reading memory. */ | |
189 | ||
190 | static int trust_readonly = 0; | |
191 | ||
8defab1a DJ |
192 | /* Nonzero if we should show true memory content including |
193 | memory breakpoint inserted by gdb. */ | |
194 | ||
195 | static int show_memory_breakpoints = 0; | |
196 | ||
d914c394 SS |
197 | /* These globals control whether GDB attempts to perform these |
198 | operations; they are useful for targets that need to prevent | |
199 | inadvertant disruption, such as in non-stop mode. */ | |
200 | ||
201 | int may_write_registers = 1; | |
202 | ||
203 | int may_write_memory = 1; | |
204 | ||
205 | int may_insert_breakpoints = 1; | |
206 | ||
207 | int may_insert_tracepoints = 1; | |
208 | ||
209 | int may_insert_fast_tracepoints = 1; | |
210 | ||
211 | int may_stop = 1; | |
212 | ||
c906108c SS |
213 | /* Non-zero if we want to see trace of target level stuff. */ |
214 | ||
215 | static int targetdebug = 0; | |
920d2a44 AC |
216 | static void |
217 | show_targetdebug (struct ui_file *file, int from_tty, | |
218 | struct cmd_list_element *c, const char *value) | |
219 | { | |
220 | fprintf_filtered (file, _("Target debugging is %s.\n"), value); | |
221 | } | |
c906108c | 222 | |
a14ed312 | 223 | static void setup_target_debug (void); |
c906108c | 224 | |
4e5d721f DE |
225 | /* The option sets this. */ |
226 | static int stack_cache_enabled_p_1 = 1; | |
227 | /* And set_stack_cache_enabled_p updates this. | |
228 | The reason for the separation is so that we don't flush the cache for | |
229 | on->on transitions. */ | |
230 | static int stack_cache_enabled_p = 1; | |
231 | ||
232 | /* This is called *after* the stack-cache has been set. | |
233 | Flush the cache for off->on and on->off transitions. | |
234 | There's no real need to flush the cache for on->off transitions, | |
235 | except cleanliness. */ | |
236 | ||
237 | static void | |
238 | set_stack_cache_enabled_p (char *args, int from_tty, | |
239 | struct cmd_list_element *c) | |
240 | { | |
241 | if (stack_cache_enabled_p != stack_cache_enabled_p_1) | |
242 | target_dcache_invalidate (); | |
243 | ||
244 | stack_cache_enabled_p = stack_cache_enabled_p_1; | |
245 | } | |
246 | ||
247 | static void | |
248 | show_stack_cache_enabled_p (struct ui_file *file, int from_tty, | |
249 | struct cmd_list_element *c, const char *value) | |
250 | { | |
251 | fprintf_filtered (file, _("Cache use for stack accesses is %s.\n"), value); | |
252 | } | |
253 | ||
254 | /* Cache of memory operations, to speed up remote access. */ | |
255 | static DCACHE *target_dcache; | |
256 | ||
257 | /* Invalidate the target dcache. */ | |
258 | ||
259 | void | |
260 | target_dcache_invalidate (void) | |
261 | { | |
262 | dcache_invalidate (target_dcache); | |
263 | } | |
4930751a | 264 | |
c906108c SS |
265 | /* The user just typed 'target' without the name of a target. */ |
266 | ||
c906108c | 267 | static void |
fba45db2 | 268 | target_command (char *arg, int from_tty) |
c906108c SS |
269 | { |
270 | fputs_filtered ("Argument required (target name). Try `help target'\n", | |
271 | gdb_stdout); | |
272 | } | |
273 | ||
c35b1492 PA |
274 | /* Default target_has_* methods for process_stratum targets. */ |
275 | ||
276 | int | |
277 | default_child_has_all_memory (struct target_ops *ops) | |
278 | { | |
279 | /* If no inferior selected, then we can't read memory here. */ | |
280 | if (ptid_equal (inferior_ptid, null_ptid)) | |
281 | return 0; | |
282 | ||
283 | return 1; | |
284 | } | |
285 | ||
286 | int | |
287 | default_child_has_memory (struct target_ops *ops) | |
288 | { | |
289 | /* If no inferior selected, then we can't read memory here. */ | |
290 | if (ptid_equal (inferior_ptid, null_ptid)) | |
291 | return 0; | |
292 | ||
293 | return 1; | |
294 | } | |
295 | ||
296 | int | |
297 | default_child_has_stack (struct target_ops *ops) | |
298 | { | |
299 | /* If no inferior selected, there's no stack. */ | |
300 | if (ptid_equal (inferior_ptid, null_ptid)) | |
301 | return 0; | |
302 | ||
303 | return 1; | |
304 | } | |
305 | ||
306 | int | |
307 | default_child_has_registers (struct target_ops *ops) | |
308 | { | |
309 | /* Can't read registers from no inferior. */ | |
310 | if (ptid_equal (inferior_ptid, null_ptid)) | |
311 | return 0; | |
312 | ||
313 | return 1; | |
314 | } | |
315 | ||
316 | int | |
317 | default_child_has_execution (struct target_ops *ops) | |
318 | { | |
319 | /* If there's no thread selected, then we can't make it run through | |
320 | hoops. */ | |
321 | if (ptid_equal (inferior_ptid, null_ptid)) | |
322 | return 0; | |
323 | ||
324 | return 1; | |
325 | } | |
326 | ||
327 | ||
328 | int | |
329 | target_has_all_memory_1 (void) | |
330 | { | |
331 | struct target_ops *t; | |
332 | ||
333 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
334 | if (t->to_has_all_memory (t)) | |
335 | return 1; | |
336 | ||
337 | return 0; | |
338 | } | |
339 | ||
340 | int | |
341 | target_has_memory_1 (void) | |
342 | { | |
343 | struct target_ops *t; | |
344 | ||
345 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
346 | if (t->to_has_memory (t)) | |
347 | return 1; | |
348 | ||
349 | return 0; | |
350 | } | |
351 | ||
352 | int | |
353 | target_has_stack_1 (void) | |
354 | { | |
355 | struct target_ops *t; | |
356 | ||
357 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
358 | if (t->to_has_stack (t)) | |
359 | return 1; | |
360 | ||
361 | return 0; | |
362 | } | |
363 | ||
364 | int | |
365 | target_has_registers_1 (void) | |
366 | { | |
367 | struct target_ops *t; | |
368 | ||
369 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
370 | if (t->to_has_registers (t)) | |
371 | return 1; | |
372 | ||
373 | return 0; | |
374 | } | |
375 | ||
376 | int | |
377 | target_has_execution_1 (void) | |
378 | { | |
379 | struct target_ops *t; | |
380 | ||
381 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
382 | if (t->to_has_execution (t)) | |
383 | return 1; | |
384 | ||
385 | return 0; | |
386 | } | |
387 | ||
c906108c SS |
388 | /* Add a possible target architecture to the list. */ |
389 | ||
390 | void | |
fba45db2 | 391 | add_target (struct target_ops *t) |
c906108c | 392 | { |
0088c768 | 393 | /* Provide default values for all "must have" methods. */ |
0b603eba AC |
394 | if (t->to_xfer_partial == NULL) |
395 | t->to_xfer_partial = default_xfer_partial; | |
0088c768 | 396 | |
c35b1492 PA |
397 | if (t->to_has_all_memory == NULL) |
398 | t->to_has_all_memory = (int (*) (struct target_ops *)) return_zero; | |
399 | ||
400 | if (t->to_has_memory == NULL) | |
401 | t->to_has_memory = (int (*) (struct target_ops *)) return_zero; | |
402 | ||
403 | if (t->to_has_stack == NULL) | |
404 | t->to_has_stack = (int (*) (struct target_ops *)) return_zero; | |
405 | ||
406 | if (t->to_has_registers == NULL) | |
407 | t->to_has_registers = (int (*) (struct target_ops *)) return_zero; | |
408 | ||
409 | if (t->to_has_execution == NULL) | |
410 | t->to_has_execution = (int (*) (struct target_ops *)) return_zero; | |
411 | ||
c906108c SS |
412 | if (!target_structs) |
413 | { | |
414 | target_struct_allocsize = DEFAULT_ALLOCSIZE; | |
415 | target_structs = (struct target_ops **) xmalloc | |
416 | (target_struct_allocsize * sizeof (*target_structs)); | |
417 | } | |
418 | if (target_struct_size >= target_struct_allocsize) | |
419 | { | |
420 | target_struct_allocsize *= 2; | |
421 | target_structs = (struct target_ops **) | |
c5aa993b JM |
422 | xrealloc ((char *) target_structs, |
423 | target_struct_allocsize * sizeof (*target_structs)); | |
c906108c SS |
424 | } |
425 | target_structs[target_struct_size++] = t; | |
c906108c SS |
426 | |
427 | if (targetlist == NULL) | |
1bedd215 AC |
428 | add_prefix_cmd ("target", class_run, target_command, _("\ |
429 | Connect to a target machine or process.\n\ | |
c906108c SS |
430 | The first argument is the type or protocol of the target machine.\n\ |
431 | Remaining arguments are interpreted by the target protocol. For more\n\ | |
432 | information on the arguments for a particular protocol, type\n\ | |
1bedd215 | 433 | `help target ' followed by the protocol name."), |
c906108c SS |
434 | &targetlist, "target ", 0, &cmdlist); |
435 | add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc, &targetlist); | |
436 | } | |
437 | ||
438 | /* Stub functions */ | |
439 | ||
440 | void | |
fba45db2 | 441 | target_ignore (void) |
c906108c SS |
442 | { |
443 | } | |
444 | ||
7d85a9c0 JB |
445 | void |
446 | target_kill (void) | |
447 | { | |
448 | struct target_ops *t; | |
449 | ||
450 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
451 | if (t->to_kill != NULL) | |
452 | { | |
453 | if (targetdebug) | |
454 | fprintf_unfiltered (gdb_stdlog, "target_kill ()\n"); | |
455 | ||
456 | t->to_kill (t); | |
457 | return; | |
458 | } | |
459 | ||
460 | noprocess (); | |
461 | } | |
462 | ||
11cf8741 JM |
463 | void |
464 | target_load (char *arg, int from_tty) | |
465 | { | |
4e5d721f | 466 | target_dcache_invalidate (); |
11cf8741 JM |
467 | (*current_target.to_load) (arg, from_tty); |
468 | } | |
469 | ||
947b8855 PA |
470 | void |
471 | target_create_inferior (char *exec_file, char *args, | |
472 | char **env, int from_tty) | |
136d6dae VP |
473 | { |
474 | struct target_ops *t; | |
5d502164 | 475 | |
136d6dae VP |
476 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
477 | { | |
478 | if (t->to_create_inferior != NULL) | |
479 | { | |
480 | t->to_create_inferior (t, exec_file, args, env, from_tty); | |
947b8855 PA |
481 | if (targetdebug) |
482 | fprintf_unfiltered (gdb_stdlog, | |
483 | "target_create_inferior (%s, %s, xxx, %d)\n", | |
484 | exec_file, args, from_tty); | |
136d6dae VP |
485 | return; |
486 | } | |
487 | } | |
488 | ||
489 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 490 | _("could not find a target to create inferior")); |
136d6dae VP |
491 | } |
492 | ||
d9d2d8b6 PA |
493 | void |
494 | target_terminal_inferior (void) | |
495 | { | |
496 | /* A background resume (``run&'') should leave GDB in control of the | |
c378eb4e | 497 | terminal. Use target_can_async_p, not target_is_async_p, since at |
ba7f6c64 VP |
498 | this point the target is not async yet. However, if sync_execution |
499 | is not set, we know it will become async prior to resume. */ | |
500 | if (target_can_async_p () && !sync_execution) | |
d9d2d8b6 PA |
501 | return; |
502 | ||
503 | /* If GDB is resuming the inferior in the foreground, install | |
504 | inferior's terminal modes. */ | |
505 | (*current_target.to_terminal_inferior) (); | |
506 | } | |
136d6dae | 507 | |
c906108c | 508 | static int |
fba45db2 KB |
509 | nomemory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
510 | struct target_ops *t) | |
c906108c | 511 | { |
c378eb4e MS |
512 | errno = EIO; /* Can't read/write this location. */ |
513 | return 0; /* No bytes handled. */ | |
c906108c SS |
514 | } |
515 | ||
516 | static void | |
fba45db2 | 517 | tcomplain (void) |
c906108c | 518 | { |
8a3fe4f8 | 519 | error (_("You can't do that when your target is `%s'"), |
c906108c SS |
520 | current_target.to_shortname); |
521 | } | |
522 | ||
523 | void | |
fba45db2 | 524 | noprocess (void) |
c906108c | 525 | { |
8a3fe4f8 | 526 | error (_("You can't do that without a process to debug.")); |
c906108c SS |
527 | } |
528 | ||
c906108c | 529 | static int |
fba45db2 | 530 | nosymbol (char *name, CORE_ADDR *addrp) |
c906108c | 531 | { |
c378eb4e | 532 | return 1; /* Symbol does not exist in target env. */ |
c906108c SS |
533 | } |
534 | ||
c906108c | 535 | static void |
fba45db2 | 536 | default_terminal_info (char *args, int from_tty) |
c906108c | 537 | { |
a3f17187 | 538 | printf_unfiltered (_("No saved terminal information.\n")); |
c906108c SS |
539 | } |
540 | ||
0ef643c8 JB |
541 | /* A default implementation for the to_get_ada_task_ptid target method. |
542 | ||
543 | This function builds the PTID by using both LWP and TID as part of | |
544 | the PTID lwp and tid elements. The pid used is the pid of the | |
545 | inferior_ptid. */ | |
546 | ||
2c0b251b | 547 | static ptid_t |
0ef643c8 JB |
548 | default_get_ada_task_ptid (long lwp, long tid) |
549 | { | |
550 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid); | |
551 | } | |
552 | ||
7998dfc3 AC |
553 | /* Go through the target stack from top to bottom, copying over zero |
554 | entries in current_target, then filling in still empty entries. In | |
555 | effect, we are doing class inheritance through the pushed target | |
556 | vectors. | |
557 | ||
558 | NOTE: cagney/2003-10-17: The problem with this inheritance, as it | |
559 | is currently implemented, is that it discards any knowledge of | |
560 | which target an inherited method originally belonged to. | |
561 | Consequently, new new target methods should instead explicitly and | |
562 | locally search the target stack for the target that can handle the | |
563 | request. */ | |
c906108c SS |
564 | |
565 | static void | |
7998dfc3 | 566 | update_current_target (void) |
c906108c | 567 | { |
7998dfc3 AC |
568 | struct target_ops *t; |
569 | ||
08d8bcd7 | 570 | /* First, reset current's contents. */ |
7998dfc3 AC |
571 | memset (¤t_target, 0, sizeof (current_target)); |
572 | ||
573 | #define INHERIT(FIELD, TARGET) \ | |
574 | if (!current_target.FIELD) \ | |
575 | current_target.FIELD = (TARGET)->FIELD | |
576 | ||
577 | for (t = target_stack; t; t = t->beneath) | |
578 | { | |
579 | INHERIT (to_shortname, t); | |
580 | INHERIT (to_longname, t); | |
581 | INHERIT (to_doc, t); | |
b52323fa UW |
582 | /* Do not inherit to_open. */ |
583 | /* Do not inherit to_close. */ | |
136d6dae | 584 | /* Do not inherit to_attach. */ |
7998dfc3 | 585 | INHERIT (to_post_attach, t); |
dc177b7a | 586 | INHERIT (to_attach_no_wait, t); |
136d6dae | 587 | /* Do not inherit to_detach. */ |
597320e7 | 588 | /* Do not inherit to_disconnect. */ |
28439f5e | 589 | /* Do not inherit to_resume. */ |
117de6a9 | 590 | /* Do not inherit to_wait. */ |
28439f5e PA |
591 | /* Do not inherit to_fetch_registers. */ |
592 | /* Do not inherit to_store_registers. */ | |
7998dfc3 | 593 | INHERIT (to_prepare_to_store, t); |
c8e73a31 | 594 | INHERIT (deprecated_xfer_memory, t); |
7998dfc3 AC |
595 | INHERIT (to_files_info, t); |
596 | INHERIT (to_insert_breakpoint, t); | |
597 | INHERIT (to_remove_breakpoint, t); | |
598 | INHERIT (to_can_use_hw_breakpoint, t); | |
599 | INHERIT (to_insert_hw_breakpoint, t); | |
600 | INHERIT (to_remove_hw_breakpoint, t); | |
601 | INHERIT (to_insert_watchpoint, t); | |
602 | INHERIT (to_remove_watchpoint, t); | |
603 | INHERIT (to_stopped_data_address, t); | |
74174d2e | 604 | INHERIT (to_have_steppable_watchpoint, t); |
7998dfc3 | 605 | INHERIT (to_have_continuable_watchpoint, t); |
5009afc5 AS |
606 | INHERIT (to_stopped_by_watchpoint, t); |
607 | INHERIT (to_watchpoint_addr_within_range, t); | |
e0d24f8d | 608 | INHERIT (to_region_ok_for_hw_watchpoint, t); |
0cf6dd15 | 609 | INHERIT (to_can_accel_watchpoint_condition, t); |
7998dfc3 AC |
610 | INHERIT (to_terminal_init, t); |
611 | INHERIT (to_terminal_inferior, t); | |
612 | INHERIT (to_terminal_ours_for_output, t); | |
613 | INHERIT (to_terminal_ours, t); | |
614 | INHERIT (to_terminal_save_ours, t); | |
615 | INHERIT (to_terminal_info, t); | |
7d85a9c0 | 616 | /* Do not inherit to_kill. */ |
7998dfc3 AC |
617 | INHERIT (to_load, t); |
618 | INHERIT (to_lookup_symbol, t); | |
136d6dae | 619 | /* Do no inherit to_create_inferior. */ |
7998dfc3 | 620 | INHERIT (to_post_startup_inferior, t); |
7998dfc3 AC |
621 | INHERIT (to_insert_fork_catchpoint, t); |
622 | INHERIT (to_remove_fork_catchpoint, t); | |
623 | INHERIT (to_insert_vfork_catchpoint, t); | |
624 | INHERIT (to_remove_vfork_catchpoint, t); | |
ee057212 | 625 | /* Do not inherit to_follow_fork. */ |
7998dfc3 AC |
626 | INHERIT (to_insert_exec_catchpoint, t); |
627 | INHERIT (to_remove_exec_catchpoint, t); | |
a96d9b2e | 628 | INHERIT (to_set_syscall_catchpoint, t); |
7998dfc3 | 629 | INHERIT (to_has_exited, t); |
82892036 | 630 | /* Do not inherit to_mourn_inferior. */ |
7998dfc3 AC |
631 | INHERIT (to_can_run, t); |
632 | INHERIT (to_notice_signals, t); | |
28439f5e PA |
633 | /* Do not inherit to_thread_alive. */ |
634 | /* Do not inherit to_find_new_threads. */ | |
117de6a9 | 635 | /* Do not inherit to_pid_to_str. */ |
7998dfc3 | 636 | INHERIT (to_extra_thread_info, t); |
4694da01 | 637 | INHERIT (to_thread_name, t); |
7998dfc3 | 638 | INHERIT (to_stop, t); |
4b8a223f | 639 | /* Do not inherit to_xfer_partial. */ |
7998dfc3 | 640 | INHERIT (to_rcmd, t); |
7998dfc3 | 641 | INHERIT (to_pid_to_exec_file, t); |
49d03eab | 642 | INHERIT (to_log_command, t); |
7998dfc3 | 643 | INHERIT (to_stratum, t); |
c378eb4e MS |
644 | /* Do not inherit to_has_all_memory. */ |
645 | /* Do not inherit to_has_memory. */ | |
646 | /* Do not inherit to_has_stack. */ | |
647 | /* Do not inherit to_has_registers. */ | |
648 | /* Do not inherit to_has_execution. */ | |
7998dfc3 | 649 | INHERIT (to_has_thread_control, t); |
7998dfc3 AC |
650 | INHERIT (to_can_async_p, t); |
651 | INHERIT (to_is_async_p, t); | |
652 | INHERIT (to_async, t); | |
b84876c2 | 653 | INHERIT (to_async_mask, t); |
7998dfc3 AC |
654 | INHERIT (to_find_memory_regions, t); |
655 | INHERIT (to_make_corefile_notes, t); | |
6b04bdb7 MS |
656 | INHERIT (to_get_bookmark, t); |
657 | INHERIT (to_goto_bookmark, t); | |
117de6a9 | 658 | /* Do not inherit to_get_thread_local_address. */ |
b2175913 | 659 | INHERIT (to_can_execute_reverse, t); |
c2250ad1 | 660 | INHERIT (to_thread_architecture, t); |
424163ea | 661 | /* Do not inherit to_read_description. */ |
0ef643c8 | 662 | INHERIT (to_get_ada_task_ptid, t); |
08388c79 | 663 | /* Do not inherit to_search_memory. */ |
8a305172 | 664 | INHERIT (to_supports_multi_process, t); |
35b1e5cc SS |
665 | INHERIT (to_trace_init, t); |
666 | INHERIT (to_download_tracepoint, t); | |
667 | INHERIT (to_download_trace_state_variable, t); | |
668 | INHERIT (to_trace_set_readonly_regions, t); | |
669 | INHERIT (to_trace_start, t); | |
670 | INHERIT (to_get_trace_status, t); | |
671 | INHERIT (to_trace_stop, t); | |
672 | INHERIT (to_trace_find, t); | |
673 | INHERIT (to_get_trace_state_variable_value, t); | |
00bf0b85 SS |
674 | INHERIT (to_save_trace_data, t); |
675 | INHERIT (to_upload_tracepoints, t); | |
676 | INHERIT (to_upload_trace_state_variables, t); | |
677 | INHERIT (to_get_raw_trace_data, t); | |
35b1e5cc | 678 | INHERIT (to_set_disconnected_tracing, t); |
4daf5ac0 | 679 | INHERIT (to_set_circular_trace_buffer, t); |
711e434b | 680 | INHERIT (to_get_tib_address, t); |
d914c394 | 681 | INHERIT (to_set_permissions, t); |
0fb4aa4b PA |
682 | INHERIT (to_static_tracepoint_marker_at, t); |
683 | INHERIT (to_static_tracepoint_markers_by_strid, t); | |
b3b9301e | 684 | INHERIT (to_traceframe_info, t); |
7998dfc3 | 685 | INHERIT (to_magic, t); |
fd79ecee | 686 | /* Do not inherit to_memory_map. */ |
a76d924d DJ |
687 | /* Do not inherit to_flash_erase. */ |
688 | /* Do not inherit to_flash_done. */ | |
7998dfc3 AC |
689 | } |
690 | #undef INHERIT | |
691 | ||
692 | /* Clean up a target struct so it no longer has any zero pointers in | |
0088c768 AC |
693 | it. Some entries are defaulted to a method that print an error, |
694 | others are hard-wired to a standard recursive default. */ | |
c906108c SS |
695 | |
696 | #define de_fault(field, value) \ | |
7998dfc3 AC |
697 | if (!current_target.field) \ |
698 | current_target.field = value | |
0d06e24b | 699 | |
2bc416ba DJ |
700 | de_fault (to_open, |
701 | (void (*) (char *, int)) | |
0d06e24b | 702 | tcomplain); |
2bc416ba DJ |
703 | de_fault (to_close, |
704 | (void (*) (int)) | |
0d06e24b | 705 | target_ignore); |
2bc416ba DJ |
706 | de_fault (to_post_attach, |
707 | (void (*) (int)) | |
0d06e24b | 708 | target_ignore); |
2bc416ba | 709 | de_fault (to_prepare_to_store, |
316f2060 | 710 | (void (*) (struct regcache *)) |
0d06e24b | 711 | noprocess); |
2bc416ba | 712 | de_fault (deprecated_xfer_memory, |
3e43a32a MS |
713 | (int (*) (CORE_ADDR, gdb_byte *, int, int, |
714 | struct mem_attrib *, struct target_ops *)) | |
0d06e24b | 715 | nomemory); |
2bc416ba DJ |
716 | de_fault (to_files_info, |
717 | (void (*) (struct target_ops *)) | |
0d06e24b | 718 | target_ignore); |
2bc416ba | 719 | de_fault (to_insert_breakpoint, |
0d06e24b | 720 | memory_insert_breakpoint); |
2bc416ba | 721 | de_fault (to_remove_breakpoint, |
0d06e24b | 722 | memory_remove_breakpoint); |
ccaa32c7 GS |
723 | de_fault (to_can_use_hw_breakpoint, |
724 | (int (*) (int, int, int)) | |
725 | return_zero); | |
726 | de_fault (to_insert_hw_breakpoint, | |
a6d9a66e | 727 | (int (*) (struct gdbarch *, struct bp_target_info *)) |
ccaa32c7 GS |
728 | return_minus_one); |
729 | de_fault (to_remove_hw_breakpoint, | |
a6d9a66e | 730 | (int (*) (struct gdbarch *, struct bp_target_info *)) |
ccaa32c7 GS |
731 | return_minus_one); |
732 | de_fault (to_insert_watchpoint, | |
0cf6dd15 | 733 | (int (*) (CORE_ADDR, int, int, struct expression *)) |
ccaa32c7 GS |
734 | return_minus_one); |
735 | de_fault (to_remove_watchpoint, | |
0cf6dd15 | 736 | (int (*) (CORE_ADDR, int, int, struct expression *)) |
ccaa32c7 GS |
737 | return_minus_one); |
738 | de_fault (to_stopped_by_watchpoint, | |
739 | (int (*) (void)) | |
740 | return_zero); | |
741 | de_fault (to_stopped_data_address, | |
4aa7a7f5 | 742 | (int (*) (struct target_ops *, CORE_ADDR *)) |
ccaa32c7 | 743 | return_zero); |
5009afc5 AS |
744 | de_fault (to_watchpoint_addr_within_range, |
745 | default_watchpoint_addr_within_range); | |
e0d24f8d WZ |
746 | de_fault (to_region_ok_for_hw_watchpoint, |
747 | default_region_ok_for_hw_watchpoint); | |
0cf6dd15 TJB |
748 | de_fault (to_can_accel_watchpoint_condition, |
749 | (int (*) (CORE_ADDR, int, int, struct expression *)) | |
750 | return_zero); | |
2bc416ba DJ |
751 | de_fault (to_terminal_init, |
752 | (void (*) (void)) | |
0d06e24b | 753 | target_ignore); |
2bc416ba DJ |
754 | de_fault (to_terminal_inferior, |
755 | (void (*) (void)) | |
0d06e24b | 756 | target_ignore); |
2bc416ba DJ |
757 | de_fault (to_terminal_ours_for_output, |
758 | (void (*) (void)) | |
0d06e24b | 759 | target_ignore); |
2bc416ba DJ |
760 | de_fault (to_terminal_ours, |
761 | (void (*) (void)) | |
0d06e24b | 762 | target_ignore); |
2bc416ba DJ |
763 | de_fault (to_terminal_save_ours, |
764 | (void (*) (void)) | |
a790ad35 | 765 | target_ignore); |
2bc416ba | 766 | de_fault (to_terminal_info, |
0d06e24b | 767 | default_terminal_info); |
2bc416ba DJ |
768 | de_fault (to_load, |
769 | (void (*) (char *, int)) | |
0d06e24b | 770 | tcomplain); |
2bc416ba DJ |
771 | de_fault (to_lookup_symbol, |
772 | (int (*) (char *, CORE_ADDR *)) | |
0d06e24b | 773 | nosymbol); |
2bc416ba DJ |
774 | de_fault (to_post_startup_inferior, |
775 | (void (*) (ptid_t)) | |
0d06e24b | 776 | target_ignore); |
2bc416ba | 777 | de_fault (to_insert_fork_catchpoint, |
77b06cd7 TJB |
778 | (int (*) (int)) |
779 | return_one); | |
2bc416ba DJ |
780 | de_fault (to_remove_fork_catchpoint, |
781 | (int (*) (int)) | |
77b06cd7 | 782 | return_one); |
2bc416ba | 783 | de_fault (to_insert_vfork_catchpoint, |
77b06cd7 TJB |
784 | (int (*) (int)) |
785 | return_one); | |
2bc416ba DJ |
786 | de_fault (to_remove_vfork_catchpoint, |
787 | (int (*) (int)) | |
77b06cd7 | 788 | return_one); |
2bc416ba | 789 | de_fault (to_insert_exec_catchpoint, |
77b06cd7 TJB |
790 | (int (*) (int)) |
791 | return_one); | |
2bc416ba DJ |
792 | de_fault (to_remove_exec_catchpoint, |
793 | (int (*) (int)) | |
77b06cd7 | 794 | return_one); |
a96d9b2e SDJ |
795 | de_fault (to_set_syscall_catchpoint, |
796 | (int (*) (int, int, int, int, int *)) | |
77b06cd7 | 797 | return_one); |
2bc416ba DJ |
798 | de_fault (to_has_exited, |
799 | (int (*) (int, int, int *)) | |
0d06e24b | 800 | return_zero); |
2bc416ba | 801 | de_fault (to_can_run, |
0d06e24b | 802 | return_zero); |
2bc416ba DJ |
803 | de_fault (to_notice_signals, |
804 | (void (*) (ptid_t)) | |
0d06e24b | 805 | target_ignore); |
2bc416ba DJ |
806 | de_fault (to_extra_thread_info, |
807 | (char *(*) (struct thread_info *)) | |
0d06e24b | 808 | return_zero); |
4694da01 TT |
809 | de_fault (to_thread_name, |
810 | (char *(*) (struct thread_info *)) | |
811 | return_zero); | |
2bc416ba | 812 | de_fault (to_stop, |
94cc34af | 813 | (void (*) (ptid_t)) |
0d06e24b | 814 | target_ignore); |
cf7a04e8 | 815 | current_target.to_xfer_partial = current_xfer_partial; |
2bc416ba DJ |
816 | de_fault (to_rcmd, |
817 | (void (*) (char *, struct ui_file *)) | |
0d06e24b | 818 | tcomplain); |
2bc416ba DJ |
819 | de_fault (to_pid_to_exec_file, |
820 | (char *(*) (int)) | |
0d06e24b | 821 | return_zero); |
2bc416ba DJ |
822 | de_fault (to_async, |
823 | (void (*) (void (*) (enum inferior_event_type, void*), void*)) | |
0d06e24b | 824 | tcomplain); |
b84876c2 PA |
825 | de_fault (to_async_mask, |
826 | (int (*) (int)) | |
827 | return_one); | |
c2250ad1 UW |
828 | de_fault (to_thread_architecture, |
829 | default_thread_architecture); | |
424163ea | 830 | current_target.to_read_description = NULL; |
0ef643c8 JB |
831 | de_fault (to_get_ada_task_ptid, |
832 | (ptid_t (*) (long, long)) | |
833 | default_get_ada_task_ptid); | |
8a305172 PA |
834 | de_fault (to_supports_multi_process, |
835 | (int (*) (void)) | |
836 | return_zero); | |
35b1e5cc SS |
837 | de_fault (to_trace_init, |
838 | (void (*) (void)) | |
839 | tcomplain); | |
840 | de_fault (to_download_tracepoint, | |
841 | (void (*) (struct breakpoint *)) | |
842 | tcomplain); | |
843 | de_fault (to_download_trace_state_variable, | |
844 | (void (*) (struct trace_state_variable *)) | |
845 | tcomplain); | |
846 | de_fault (to_trace_set_readonly_regions, | |
847 | (void (*) (void)) | |
848 | tcomplain); | |
849 | de_fault (to_trace_start, | |
850 | (void (*) (void)) | |
851 | tcomplain); | |
852 | de_fault (to_get_trace_status, | |
00bf0b85 | 853 | (int (*) (struct trace_status *)) |
35b1e5cc SS |
854 | return_minus_one); |
855 | de_fault (to_trace_stop, | |
856 | (void (*) (void)) | |
857 | tcomplain); | |
858 | de_fault (to_trace_find, | |
859 | (int (*) (enum trace_find_type, int, ULONGEST, ULONGEST, int *)) | |
4136fdd2 | 860 | return_minus_one); |
35b1e5cc SS |
861 | de_fault (to_get_trace_state_variable_value, |
862 | (int (*) (int, LONGEST *)) | |
863 | return_zero); | |
00bf0b85 | 864 | de_fault (to_save_trace_data, |
011aacb0 | 865 | (int (*) (const char *)) |
00bf0b85 SS |
866 | tcomplain); |
867 | de_fault (to_upload_tracepoints, | |
868 | (int (*) (struct uploaded_tp **)) | |
869 | return_zero); | |
870 | de_fault (to_upload_trace_state_variables, | |
871 | (int (*) (struct uploaded_tsv **)) | |
872 | return_zero); | |
873 | de_fault (to_get_raw_trace_data, | |
874 | (LONGEST (*) (gdb_byte *, ULONGEST, LONGEST)) | |
875 | tcomplain); | |
35b1e5cc SS |
876 | de_fault (to_set_disconnected_tracing, |
877 | (void (*) (int)) | |
4daf5ac0 SS |
878 | target_ignore); |
879 | de_fault (to_set_circular_trace_buffer, | |
880 | (void (*) (int)) | |
881 | target_ignore); | |
711e434b PM |
882 | de_fault (to_get_tib_address, |
883 | (int (*) (ptid_t, CORE_ADDR *)) | |
884 | tcomplain); | |
d914c394 SS |
885 | de_fault (to_set_permissions, |
886 | (void (*) (void)) | |
887 | target_ignore); | |
0fb4aa4b PA |
888 | de_fault (to_static_tracepoint_marker_at, |
889 | (int (*) (CORE_ADDR, struct static_tracepoint_marker *)) | |
890 | return_zero); | |
891 | de_fault (to_static_tracepoint_markers_by_strid, | |
892 | (VEC(static_tracepoint_marker_p) * (*) (const char *)) | |
893 | tcomplain); | |
b3b9301e PA |
894 | de_fault (to_traceframe_info, |
895 | (struct traceframe_info * (*) (void)) | |
896 | tcomplain); | |
c906108c | 897 | #undef de_fault |
c906108c | 898 | |
7998dfc3 AC |
899 | /* Finally, position the target-stack beneath the squashed |
900 | "current_target". That way code looking for a non-inherited | |
901 | target method can quickly and simply find it. */ | |
902 | current_target.beneath = target_stack; | |
b4b61fdb DJ |
903 | |
904 | if (targetdebug) | |
905 | setup_target_debug (); | |
c906108c SS |
906 | } |
907 | ||
908 | /* Push a new target type into the stack of the existing target accessors, | |
909 | possibly superseding some of the existing accessors. | |
910 | ||
c906108c SS |
911 | Rather than allow an empty stack, we always have the dummy target at |
912 | the bottom stratum, so we can call the function vectors without | |
913 | checking them. */ | |
914 | ||
b26a4dcb | 915 | void |
fba45db2 | 916 | push_target (struct target_ops *t) |
c906108c | 917 | { |
258b763a | 918 | struct target_ops **cur; |
c906108c SS |
919 | |
920 | /* Check magic number. If wrong, it probably means someone changed | |
921 | the struct definition, but not all the places that initialize one. */ | |
922 | if (t->to_magic != OPS_MAGIC) | |
923 | { | |
c5aa993b JM |
924 | fprintf_unfiltered (gdb_stderr, |
925 | "Magic number of %s target struct wrong\n", | |
926 | t->to_shortname); | |
3e43a32a MS |
927 | internal_error (__FILE__, __LINE__, |
928 | _("failed internal consistency check")); | |
c906108c SS |
929 | } |
930 | ||
258b763a AC |
931 | /* Find the proper stratum to install this target in. */ |
932 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
c906108c | 933 | { |
258b763a | 934 | if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum) |
c906108c SS |
935 | break; |
936 | } | |
937 | ||
258b763a | 938 | /* If there's already targets at this stratum, remove them. */ |
88c231eb | 939 | /* FIXME: cagney/2003-10-15: I think this should be popping all |
258b763a AC |
940 | targets to CUR, and not just those at this stratum level. */ |
941 | while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum) | |
942 | { | |
943 | /* There's already something at this stratum level. Close it, | |
944 | and un-hook it from the stack. */ | |
945 | struct target_ops *tmp = (*cur); | |
5d502164 | 946 | |
258b763a AC |
947 | (*cur) = (*cur)->beneath; |
948 | tmp->beneath = NULL; | |
f1c07ab0 | 949 | target_close (tmp, 0); |
258b763a | 950 | } |
c906108c SS |
951 | |
952 | /* We have removed all targets in our stratum, now add the new one. */ | |
258b763a AC |
953 | t->beneath = (*cur); |
954 | (*cur) = t; | |
c906108c SS |
955 | |
956 | update_current_target (); | |
c906108c SS |
957 | } |
958 | ||
2bc416ba | 959 | /* Remove a target_ops vector from the stack, wherever it may be. |
c906108c SS |
960 | Return how many times it was removed (0 or 1). */ |
961 | ||
962 | int | |
fba45db2 | 963 | unpush_target (struct target_ops *t) |
c906108c | 964 | { |
258b763a AC |
965 | struct target_ops **cur; |
966 | struct target_ops *tmp; | |
c906108c | 967 | |
c8d104ad PA |
968 | if (t->to_stratum == dummy_stratum) |
969 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 970 | _("Attempt to unpush the dummy target")); |
c8d104ad | 971 | |
c906108c | 972 | /* Look for the specified target. Note that we assume that a target |
c378eb4e | 973 | can only occur once in the target stack. */ |
c906108c | 974 | |
258b763a AC |
975 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) |
976 | { | |
977 | if ((*cur) == t) | |
978 | break; | |
979 | } | |
c906108c | 980 | |
258b763a | 981 | if ((*cur) == NULL) |
c378eb4e | 982 | return 0; /* Didn't find target_ops, quit now. */ |
c906108c | 983 | |
5269965e AC |
984 | /* NOTE: cagney/2003-12-06: In '94 the close call was made |
985 | unconditional by moving it to before the above check that the | |
986 | target was in the target stack (something about "Change the way | |
987 | pushing and popping of targets work to support target overlays | |
988 | and inheritance"). This doesn't make much sense - only open | |
989 | targets should be closed. */ | |
990 | target_close (t, 0); | |
991 | ||
c378eb4e | 992 | /* Unchain the target. */ |
258b763a AC |
993 | tmp = (*cur); |
994 | (*cur) = (*cur)->beneath; | |
995 | tmp->beneath = NULL; | |
c906108c SS |
996 | |
997 | update_current_target (); | |
c906108c SS |
998 | |
999 | return 1; | |
1000 | } | |
1001 | ||
1002 | void | |
fba45db2 | 1003 | pop_target (void) |
c906108c | 1004 | { |
c378eb4e | 1005 | target_close (target_stack, 0); /* Let it clean up. */ |
258b763a | 1006 | if (unpush_target (target_stack) == 1) |
c906108c SS |
1007 | return; |
1008 | ||
c5aa993b JM |
1009 | fprintf_unfiltered (gdb_stderr, |
1010 | "pop_target couldn't find target %s\n", | |
1011 | current_target.to_shortname); | |
5d502164 MS |
1012 | internal_error (__FILE__, __LINE__, |
1013 | _("failed internal consistency check")); | |
c906108c SS |
1014 | } |
1015 | ||
aa76d38d | 1016 | void |
87ab71f0 | 1017 | pop_all_targets_above (enum strata above_stratum, int quitting) |
aa76d38d | 1018 | { |
87ab71f0 | 1019 | while ((int) (current_target.to_stratum) > (int) above_stratum) |
aa76d38d | 1020 | { |
b52323fa | 1021 | target_close (target_stack, quitting); |
aa76d38d PA |
1022 | if (!unpush_target (target_stack)) |
1023 | { | |
1024 | fprintf_unfiltered (gdb_stderr, | |
1025 | "pop_all_targets couldn't find target %s\n", | |
b52323fa | 1026 | target_stack->to_shortname); |
aa76d38d PA |
1027 | internal_error (__FILE__, __LINE__, |
1028 | _("failed internal consistency check")); | |
1029 | break; | |
1030 | } | |
1031 | } | |
1032 | } | |
1033 | ||
87ab71f0 PA |
1034 | void |
1035 | pop_all_targets (int quitting) | |
1036 | { | |
1037 | pop_all_targets_above (dummy_stratum, quitting); | |
1038 | } | |
1039 | ||
c0edd9ed JK |
1040 | /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */ |
1041 | ||
1042 | int | |
1043 | target_is_pushed (struct target_ops *t) | |
1044 | { | |
1045 | struct target_ops **cur; | |
1046 | ||
1047 | /* Check magic number. If wrong, it probably means someone changed | |
1048 | the struct definition, but not all the places that initialize one. */ | |
1049 | if (t->to_magic != OPS_MAGIC) | |
1050 | { | |
1051 | fprintf_unfiltered (gdb_stderr, | |
1052 | "Magic number of %s target struct wrong\n", | |
1053 | t->to_shortname); | |
3e43a32a MS |
1054 | internal_error (__FILE__, __LINE__, |
1055 | _("failed internal consistency check")); | |
c0edd9ed JK |
1056 | } |
1057 | ||
1058 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
1059 | if (*cur == t) | |
1060 | return 1; | |
1061 | ||
1062 | return 0; | |
1063 | } | |
1064 | ||
72f5cf0e | 1065 | /* Using the objfile specified in OBJFILE, find the address for the |
9e35dae4 DJ |
1066 | current thread's thread-local storage with offset OFFSET. */ |
1067 | CORE_ADDR | |
1068 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) | |
1069 | { | |
1070 | volatile CORE_ADDR addr = 0; | |
117de6a9 PA |
1071 | struct target_ops *target; |
1072 | ||
1073 | for (target = current_target.beneath; | |
1074 | target != NULL; | |
1075 | target = target->beneath) | |
1076 | { | |
1077 | if (target->to_get_thread_local_address != NULL) | |
1078 | break; | |
1079 | } | |
9e35dae4 | 1080 | |
117de6a9 | 1081 | if (target != NULL |
1cf3db46 | 1082 | && gdbarch_fetch_tls_load_module_address_p (target_gdbarch)) |
9e35dae4 DJ |
1083 | { |
1084 | ptid_t ptid = inferior_ptid; | |
1085 | volatile struct gdb_exception ex; | |
1086 | ||
1087 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
1088 | { | |
1089 | CORE_ADDR lm_addr; | |
1090 | ||
1091 | /* Fetch the load module address for this objfile. */ | |
1cf3db46 | 1092 | lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch, |
9e35dae4 DJ |
1093 | objfile); |
1094 | /* If it's 0, throw the appropriate exception. */ | |
1095 | if (lm_addr == 0) | |
1096 | throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR, | |
1097 | _("TLS load module not found")); | |
1098 | ||
3e43a32a MS |
1099 | addr = target->to_get_thread_local_address (target, ptid, |
1100 | lm_addr, offset); | |
9e35dae4 DJ |
1101 | } |
1102 | /* If an error occurred, print TLS related messages here. Otherwise, | |
1103 | throw the error to some higher catcher. */ | |
1104 | if (ex.reason < 0) | |
1105 | { | |
1106 | int objfile_is_library = (objfile->flags & OBJF_SHARED); | |
1107 | ||
1108 | switch (ex.error) | |
1109 | { | |
1110 | case TLS_NO_LIBRARY_SUPPORT_ERROR: | |
3e43a32a MS |
1111 | error (_("Cannot find thread-local variables " |
1112 | "in this thread library.")); | |
9e35dae4 DJ |
1113 | break; |
1114 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: | |
1115 | if (objfile_is_library) | |
1116 | error (_("Cannot find shared library `%s' in dynamic" | |
1117 | " linker's load module list"), objfile->name); | |
1118 | else | |
1119 | error (_("Cannot find executable file `%s' in dynamic" | |
1120 | " linker's load module list"), objfile->name); | |
1121 | break; | |
1122 | case TLS_NOT_ALLOCATED_YET_ERROR: | |
1123 | if (objfile_is_library) | |
1124 | error (_("The inferior has not yet allocated storage for" | |
1125 | " thread-local variables in\n" | |
1126 | "the shared library `%s'\n" | |
1127 | "for %s"), | |
1128 | objfile->name, target_pid_to_str (ptid)); | |
1129 | else | |
1130 | error (_("The inferior has not yet allocated storage for" | |
1131 | " thread-local variables in\n" | |
1132 | "the executable `%s'\n" | |
1133 | "for %s"), | |
1134 | objfile->name, target_pid_to_str (ptid)); | |
1135 | break; | |
1136 | case TLS_GENERIC_ERROR: | |
1137 | if (objfile_is_library) | |
1138 | error (_("Cannot find thread-local storage for %s, " | |
1139 | "shared library %s:\n%s"), | |
1140 | target_pid_to_str (ptid), | |
1141 | objfile->name, ex.message); | |
1142 | else | |
1143 | error (_("Cannot find thread-local storage for %s, " | |
1144 | "executable file %s:\n%s"), | |
1145 | target_pid_to_str (ptid), | |
1146 | objfile->name, ex.message); | |
1147 | break; | |
1148 | default: | |
1149 | throw_exception (ex); | |
1150 | break; | |
1151 | } | |
1152 | } | |
1153 | } | |
1154 | /* It wouldn't be wrong here to try a gdbarch method, too; finding | |
1155 | TLS is an ABI-specific thing. But we don't do that yet. */ | |
1156 | else | |
1157 | error (_("Cannot find thread-local variables on this target")); | |
1158 | ||
1159 | return addr; | |
1160 | } | |
1161 | ||
c906108c SS |
1162 | #undef MIN |
1163 | #define MIN(A, B) (((A) <= (B)) ? (A) : (B)) | |
1164 | ||
1165 | /* target_read_string -- read a null terminated string, up to LEN bytes, | |
1166 | from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful. | |
1167 | Set *STRING to a pointer to malloc'd memory containing the data; the caller | |
1168 | is responsible for freeing it. Return the number of bytes successfully | |
1169 | read. */ | |
1170 | ||
1171 | int | |
fba45db2 | 1172 | target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop) |
c906108c SS |
1173 | { |
1174 | int tlen, origlen, offset, i; | |
1b0ba102 | 1175 | gdb_byte buf[4]; |
c906108c SS |
1176 | int errcode = 0; |
1177 | char *buffer; | |
1178 | int buffer_allocated; | |
1179 | char *bufptr; | |
1180 | unsigned int nbytes_read = 0; | |
1181 | ||
6217bf3e MS |
1182 | gdb_assert (string); |
1183 | ||
c906108c SS |
1184 | /* Small for testing. */ |
1185 | buffer_allocated = 4; | |
1186 | buffer = xmalloc (buffer_allocated); | |
1187 | bufptr = buffer; | |
1188 | ||
1189 | origlen = len; | |
1190 | ||
1191 | while (len > 0) | |
1192 | { | |
1193 | tlen = MIN (len, 4 - (memaddr & 3)); | |
1194 | offset = memaddr & 3; | |
1195 | ||
1b0ba102 | 1196 | errcode = target_read_memory (memaddr & ~3, buf, sizeof buf); |
c906108c SS |
1197 | if (errcode != 0) |
1198 | { | |
1199 | /* The transfer request might have crossed the boundary to an | |
c378eb4e | 1200 | unallocated region of memory. Retry the transfer, requesting |
c906108c SS |
1201 | a single byte. */ |
1202 | tlen = 1; | |
1203 | offset = 0; | |
b8eb5af0 | 1204 | errcode = target_read_memory (memaddr, buf, 1); |
c906108c SS |
1205 | if (errcode != 0) |
1206 | goto done; | |
1207 | } | |
1208 | ||
1209 | if (bufptr - buffer + tlen > buffer_allocated) | |
1210 | { | |
1211 | unsigned int bytes; | |
5d502164 | 1212 | |
c906108c SS |
1213 | bytes = bufptr - buffer; |
1214 | buffer_allocated *= 2; | |
1215 | buffer = xrealloc (buffer, buffer_allocated); | |
1216 | bufptr = buffer + bytes; | |
1217 | } | |
1218 | ||
1219 | for (i = 0; i < tlen; i++) | |
1220 | { | |
1221 | *bufptr++ = buf[i + offset]; | |
1222 | if (buf[i + offset] == '\000') | |
1223 | { | |
1224 | nbytes_read += i + 1; | |
1225 | goto done; | |
1226 | } | |
1227 | } | |
1228 | ||
1229 | memaddr += tlen; | |
1230 | len -= tlen; | |
1231 | nbytes_read += tlen; | |
1232 | } | |
c5aa993b | 1233 | done: |
6217bf3e | 1234 | *string = buffer; |
c906108c SS |
1235 | if (errnop != NULL) |
1236 | *errnop = errcode; | |
c906108c SS |
1237 | return nbytes_read; |
1238 | } | |
1239 | ||
07b82ea5 PA |
1240 | struct target_section_table * |
1241 | target_get_section_table (struct target_ops *target) | |
1242 | { | |
1243 | struct target_ops *t; | |
1244 | ||
1245 | if (targetdebug) | |
1246 | fprintf_unfiltered (gdb_stdlog, "target_get_section_table ()\n"); | |
1247 | ||
1248 | for (t = target; t != NULL; t = t->beneath) | |
1249 | if (t->to_get_section_table != NULL) | |
1250 | return (*t->to_get_section_table) (t); | |
1251 | ||
1252 | return NULL; | |
1253 | } | |
1254 | ||
8db32d44 | 1255 | /* Find a section containing ADDR. */ |
07b82ea5 | 1256 | |
0542c86d | 1257 | struct target_section * |
8db32d44 AC |
1258 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
1259 | { | |
07b82ea5 | 1260 | struct target_section_table *table = target_get_section_table (target); |
0542c86d | 1261 | struct target_section *secp; |
07b82ea5 PA |
1262 | |
1263 | if (table == NULL) | |
1264 | return NULL; | |
1265 | ||
1266 | for (secp = table->sections; secp < table->sections_end; secp++) | |
8db32d44 AC |
1267 | { |
1268 | if (addr >= secp->addr && addr < secp->endaddr) | |
1269 | return secp; | |
1270 | } | |
1271 | return NULL; | |
1272 | } | |
1273 | ||
e6e4e701 PA |
1274 | /* Read memory from the live target, even if currently inspecting a |
1275 | traceframe. The return is the same as that of target_read. */ | |
1276 | ||
1277 | static LONGEST | |
1278 | target_read_live_memory (enum target_object object, | |
1279 | ULONGEST memaddr, gdb_byte *myaddr, LONGEST len) | |
1280 | { | |
1281 | int ret; | |
1282 | struct cleanup *cleanup; | |
1283 | ||
1284 | /* Switch momentarily out of tfind mode so to access live memory. | |
1285 | Note that this must not clear global state, such as the frame | |
1286 | cache, which must still remain valid for the previous traceframe. | |
1287 | We may be _building_ the frame cache at this point. */ | |
1288 | cleanup = make_cleanup_restore_traceframe_number (); | |
1289 | set_traceframe_number (-1); | |
1290 | ||
1291 | ret = target_read (current_target.beneath, object, NULL, | |
1292 | myaddr, memaddr, len); | |
1293 | ||
1294 | do_cleanups (cleanup); | |
1295 | return ret; | |
1296 | } | |
1297 | ||
1298 | /* Using the set of read-only target sections of OPS, read live | |
1299 | read-only memory. Note that the actual reads start from the | |
5657161f PA |
1300 | top-most target again. |
1301 | ||
1302 | For interface/parameters/return description see target.h, | |
1303 | to_xfer_partial. */ | |
e6e4e701 PA |
1304 | |
1305 | static LONGEST | |
1306 | memory_xfer_live_readonly_partial (struct target_ops *ops, | |
1307 | enum target_object object, | |
1308 | gdb_byte *readbuf, ULONGEST memaddr, | |
1309 | LONGEST len) | |
1310 | { | |
1311 | struct target_section *secp; | |
1312 | struct target_section_table *table; | |
1313 | ||
1314 | secp = target_section_by_addr (ops, memaddr); | |
1315 | if (secp != NULL | |
1316 | && (bfd_get_section_flags (secp->bfd, secp->the_bfd_section) | |
1317 | & SEC_READONLY)) | |
1318 | { | |
1319 | struct target_section *p; | |
1320 | ULONGEST memend = memaddr + len; | |
1321 | ||
1322 | table = target_get_section_table (ops); | |
1323 | ||
1324 | for (p = table->sections; p < table->sections_end; p++) | |
1325 | { | |
1326 | if (memaddr >= p->addr) | |
1327 | { | |
1328 | if (memend <= p->endaddr) | |
1329 | { | |
1330 | /* Entire transfer is within this section. */ | |
1331 | return target_read_live_memory (object, memaddr, | |
1332 | readbuf, len); | |
1333 | } | |
1334 | else if (memaddr >= p->endaddr) | |
1335 | { | |
1336 | /* This section ends before the transfer starts. */ | |
1337 | continue; | |
1338 | } | |
1339 | else | |
1340 | { | |
1341 | /* This section overlaps the transfer. Just do half. */ | |
1342 | len = p->endaddr - memaddr; | |
1343 | return target_read_live_memory (object, memaddr, | |
1344 | readbuf, len); | |
1345 | } | |
1346 | } | |
1347 | } | |
1348 | } | |
1349 | ||
1350 | return 0; | |
1351 | } | |
1352 | ||
7f79c47e DE |
1353 | /* Perform a partial memory transfer. |
1354 | For docs see target.h, to_xfer_partial. */ | |
cf7a04e8 DJ |
1355 | |
1356 | static LONGEST | |
4e5d721f DE |
1357 | memory_xfer_partial (struct target_ops *ops, enum target_object object, |
1358 | void *readbuf, const void *writebuf, ULONGEST memaddr, | |
1359 | LONGEST len) | |
0779438d | 1360 | { |
cf7a04e8 DJ |
1361 | LONGEST res; |
1362 | int reg_len; | |
1363 | struct mem_region *region; | |
4e5d721f | 1364 | struct inferior *inf; |
cf7a04e8 DJ |
1365 | |
1366 | /* Zero length requests are ok and require no work. */ | |
1367 | if (len == 0) | |
1368 | return 0; | |
1369 | ||
07b82ea5 PA |
1370 | /* For accesses to unmapped overlay sections, read directly from |
1371 | files. Must do this first, as MEMADDR may need adjustment. */ | |
1372 | if (readbuf != NULL && overlay_debugging) | |
1373 | { | |
1374 | struct obj_section *section = find_pc_overlay (memaddr); | |
5d502164 | 1375 | |
07b82ea5 PA |
1376 | if (pc_in_unmapped_range (memaddr, section)) |
1377 | { | |
1378 | struct target_section_table *table | |
1379 | = target_get_section_table (ops); | |
1380 | const char *section_name = section->the_bfd_section->name; | |
5d502164 | 1381 | |
07b82ea5 PA |
1382 | memaddr = overlay_mapped_address (memaddr, section); |
1383 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
1384 | memaddr, len, | |
1385 | table->sections, | |
1386 | table->sections_end, | |
1387 | section_name); | |
1388 | } | |
1389 | } | |
1390 | ||
1391 | /* Try the executable files, if "trust-readonly-sections" is set. */ | |
cf7a04e8 DJ |
1392 | if (readbuf != NULL && trust_readonly) |
1393 | { | |
0542c86d | 1394 | struct target_section *secp; |
07b82ea5 | 1395 | struct target_section_table *table; |
cf7a04e8 DJ |
1396 | |
1397 | secp = target_section_by_addr (ops, memaddr); | |
1398 | if (secp != NULL | |
1399 | && (bfd_get_section_flags (secp->bfd, secp->the_bfd_section) | |
1400 | & SEC_READONLY)) | |
07b82ea5 PA |
1401 | { |
1402 | table = target_get_section_table (ops); | |
1403 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
1404 | memaddr, len, | |
1405 | table->sections, | |
1406 | table->sections_end, | |
1407 | NULL); | |
1408 | } | |
98646950 UW |
1409 | } |
1410 | ||
e6e4e701 PA |
1411 | /* If reading unavailable memory in the context of traceframes, and |
1412 | this address falls within a read-only section, fallback to | |
1413 | reading from live memory. */ | |
1414 | if (readbuf != NULL && get_traceframe_number () != -1) | |
1415 | { | |
1416 | VEC(mem_range_s) *available; | |
1417 | ||
1418 | /* If we fail to get the set of available memory, then the | |
1419 | target does not support querying traceframe info, and so we | |
1420 | attempt reading from the traceframe anyway (assuming the | |
1421 | target implements the old QTro packet then). */ | |
1422 | if (traceframe_available_memory (&available, memaddr, len)) | |
1423 | { | |
1424 | struct cleanup *old_chain; | |
1425 | ||
1426 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available); | |
1427 | ||
1428 | if (VEC_empty (mem_range_s, available) | |
1429 | || VEC_index (mem_range_s, available, 0)->start != memaddr) | |
1430 | { | |
1431 | /* Don't read into the traceframe's available | |
1432 | memory. */ | |
1433 | if (!VEC_empty (mem_range_s, available)) | |
1434 | { | |
1435 | LONGEST oldlen = len; | |
1436 | ||
1437 | len = VEC_index (mem_range_s, available, 0)->start - memaddr; | |
1438 | gdb_assert (len <= oldlen); | |
1439 | } | |
1440 | ||
1441 | do_cleanups (old_chain); | |
1442 | ||
1443 | /* This goes through the topmost target again. */ | |
1444 | res = memory_xfer_live_readonly_partial (ops, object, | |
1445 | readbuf, memaddr, len); | |
1446 | if (res > 0) | |
1447 | return res; | |
1448 | ||
1449 | /* No use trying further, we know some memory starting | |
1450 | at MEMADDR isn't available. */ | |
1451 | return -1; | |
1452 | } | |
1453 | ||
1454 | /* Don't try to read more than how much is available, in | |
1455 | case the target implements the deprecated QTro packet to | |
1456 | cater for older GDBs (the target's knowledge of read-only | |
1457 | sections may be outdated by now). */ | |
1458 | len = VEC_index (mem_range_s, available, 0)->length; | |
1459 | ||
1460 | do_cleanups (old_chain); | |
1461 | } | |
1462 | } | |
1463 | ||
cf7a04e8 DJ |
1464 | /* Try GDB's internal data cache. */ |
1465 | region = lookup_mem_region (memaddr); | |
4b5752d0 VP |
1466 | /* region->hi == 0 means there's no upper bound. */ |
1467 | if (memaddr + len < region->hi || region->hi == 0) | |
cf7a04e8 DJ |
1468 | reg_len = len; |
1469 | else | |
1470 | reg_len = region->hi - memaddr; | |
1471 | ||
1472 | switch (region->attrib.mode) | |
1473 | { | |
1474 | case MEM_RO: | |
1475 | if (writebuf != NULL) | |
1476 | return -1; | |
1477 | break; | |
1478 | ||
1479 | case MEM_WO: | |
1480 | if (readbuf != NULL) | |
1481 | return -1; | |
1482 | break; | |
a76d924d DJ |
1483 | |
1484 | case MEM_FLASH: | |
1485 | /* We only support writing to flash during "load" for now. */ | |
1486 | if (writebuf != NULL) | |
1487 | error (_("Writing to flash memory forbidden in this context")); | |
1488 | break; | |
4b5752d0 VP |
1489 | |
1490 | case MEM_NONE: | |
1491 | return -1; | |
cf7a04e8 DJ |
1492 | } |
1493 | ||
6c95b8df PA |
1494 | if (!ptid_equal (inferior_ptid, null_ptid)) |
1495 | inf = find_inferior_pid (ptid_get_pid (inferior_ptid)); | |
1496 | else | |
1497 | inf = NULL; | |
4e5d721f DE |
1498 | |
1499 | if (inf != NULL | |
2f4d8875 PA |
1500 | /* The dcache reads whole cache lines; that doesn't play well |
1501 | with reading from a trace buffer, because reading outside of | |
1502 | the collected memory range fails. */ | |
1503 | && get_traceframe_number () == -1 | |
4e5d721f DE |
1504 | && (region->attrib.cache |
1505 | || (stack_cache_enabled_p && object == TARGET_OBJECT_STACK_MEMORY))) | |
cf7a04e8 | 1506 | { |
cf7a04e8 | 1507 | if (readbuf != NULL) |
25f122dc | 1508 | res = dcache_xfer_memory (ops, target_dcache, memaddr, readbuf, |
cf7a04e8 DJ |
1509 | reg_len, 0); |
1510 | else | |
1511 | /* FIXME drow/2006-08-09: If we're going to preserve const | |
1512 | correctness dcache_xfer_memory should take readbuf and | |
1513 | writebuf. */ | |
25f122dc | 1514 | res = dcache_xfer_memory (ops, target_dcache, memaddr, |
cf7a04e8 DJ |
1515 | (void *) writebuf, |
1516 | reg_len, 1); | |
1517 | if (res <= 0) | |
1518 | return -1; | |
1519 | else | |
8defab1a DJ |
1520 | { |
1521 | if (readbuf && !show_memory_breakpoints) | |
1522 | breakpoint_restore_shadows (readbuf, memaddr, reg_len); | |
1523 | return res; | |
1524 | } | |
cf7a04e8 DJ |
1525 | } |
1526 | ||
1527 | /* If none of those methods found the memory we wanted, fall back | |
1528 | to a target partial transfer. Normally a single call to | |
1529 | to_xfer_partial is enough; if it doesn't recognize an object | |
1530 | it will call the to_xfer_partial of the next target down. | |
1531 | But for memory this won't do. Memory is the only target | |
1532 | object which can be read from more than one valid target. | |
1533 | A core file, for instance, could have some of memory but | |
1534 | delegate other bits to the target below it. So, we must | |
1535 | manually try all targets. */ | |
1536 | ||
1537 | do | |
1538 | { | |
1539 | res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
4b5752d0 | 1540 | readbuf, writebuf, memaddr, reg_len); |
cf7a04e8 | 1541 | if (res > 0) |
8defab1a | 1542 | break; |
cf7a04e8 | 1543 | |
5ad3a4ca DJ |
1544 | /* We want to continue past core files to executables, but not |
1545 | past a running target's memory. */ | |
c35b1492 | 1546 | if (ops->to_has_all_memory (ops)) |
8defab1a | 1547 | break; |
5ad3a4ca | 1548 | |
cf7a04e8 DJ |
1549 | ops = ops->beneath; |
1550 | } | |
1551 | while (ops != NULL); | |
1552 | ||
e8c9e0a1 | 1553 | if (res > 0 && readbuf != NULL && !show_memory_breakpoints) |
8defab1a DJ |
1554 | breakpoint_restore_shadows (readbuf, memaddr, reg_len); |
1555 | ||
41dcd03f DE |
1556 | /* Make sure the cache gets updated no matter what - if we are writing |
1557 | to the stack. Even if this write is not tagged as such, we still need | |
1558 | to update the cache. */ | |
1559 | ||
1560 | if (res > 0 | |
1561 | && inf != NULL | |
1562 | && writebuf != NULL | |
1563 | && !region->attrib.cache | |
1564 | && stack_cache_enabled_p | |
1565 | && object != TARGET_OBJECT_STACK_MEMORY) | |
1566 | { | |
7d4f32d3 | 1567 | dcache_update (target_dcache, memaddr, (void *) writebuf, res); |
41dcd03f DE |
1568 | } |
1569 | ||
cf7a04e8 DJ |
1570 | /* If we still haven't got anything, return the last error. We |
1571 | give up. */ | |
1572 | return res; | |
0779438d AC |
1573 | } |
1574 | ||
8defab1a DJ |
1575 | static void |
1576 | restore_show_memory_breakpoints (void *arg) | |
1577 | { | |
1578 | show_memory_breakpoints = (uintptr_t) arg; | |
1579 | } | |
1580 | ||
1581 | struct cleanup * | |
1582 | make_show_memory_breakpoints_cleanup (int show) | |
1583 | { | |
1584 | int current = show_memory_breakpoints; | |
8defab1a | 1585 | |
5d502164 | 1586 | show_memory_breakpoints = show; |
8defab1a DJ |
1587 | return make_cleanup (restore_show_memory_breakpoints, |
1588 | (void *) (uintptr_t) current); | |
1589 | } | |
1590 | ||
7f79c47e DE |
1591 | /* For docs see target.h, to_xfer_partial. */ |
1592 | ||
27394598 AC |
1593 | static LONGEST |
1594 | target_xfer_partial (struct target_ops *ops, | |
1595 | enum target_object object, const char *annex, | |
1596 | void *readbuf, const void *writebuf, | |
1597 | ULONGEST offset, LONGEST len) | |
1598 | { | |
1599 | LONGEST retval; | |
1600 | ||
1601 | gdb_assert (ops->to_xfer_partial != NULL); | |
cf7a04e8 | 1602 | |
d914c394 SS |
1603 | if (writebuf && !may_write_memory) |
1604 | error (_("Writing to memory is not allowed (addr %s, len %s)"), | |
1605 | core_addr_to_string_nz (offset), plongest (len)); | |
1606 | ||
cf7a04e8 DJ |
1607 | /* If this is a memory transfer, let the memory-specific code |
1608 | have a look at it instead. Memory transfers are more | |
1609 | complicated. */ | |
4e5d721f DE |
1610 | if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY) |
1611 | retval = memory_xfer_partial (ops, object, readbuf, | |
1612 | writebuf, offset, len); | |
cf7a04e8 DJ |
1613 | else |
1614 | { | |
1615 | enum target_object raw_object = object; | |
1616 | ||
1617 | /* If this is a raw memory transfer, request the normal | |
1618 | memory object from other layers. */ | |
1619 | if (raw_object == TARGET_OBJECT_RAW_MEMORY) | |
1620 | raw_object = TARGET_OBJECT_MEMORY; | |
1621 | ||
1622 | retval = ops->to_xfer_partial (ops, raw_object, annex, readbuf, | |
1623 | writebuf, offset, len); | |
1624 | } | |
1625 | ||
27394598 AC |
1626 | if (targetdebug) |
1627 | { | |
1628 | const unsigned char *myaddr = NULL; | |
1629 | ||
1630 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
1631 | "%s:target_xfer_partial " |
1632 | "(%d, %s, %s, %s, %s, %s) = %s", | |
27394598 AC |
1633 | ops->to_shortname, |
1634 | (int) object, | |
1635 | (annex ? annex : "(null)"), | |
53b71562 JB |
1636 | host_address_to_string (readbuf), |
1637 | host_address_to_string (writebuf), | |
0b1553bc UW |
1638 | core_addr_to_string_nz (offset), |
1639 | plongest (len), plongest (retval)); | |
27394598 AC |
1640 | |
1641 | if (readbuf) | |
1642 | myaddr = readbuf; | |
1643 | if (writebuf) | |
1644 | myaddr = writebuf; | |
1645 | if (retval > 0 && myaddr != NULL) | |
1646 | { | |
1647 | int i; | |
2bc416ba | 1648 | |
27394598 AC |
1649 | fputs_unfiltered (", bytes =", gdb_stdlog); |
1650 | for (i = 0; i < retval; i++) | |
1651 | { | |
53b71562 | 1652 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1653 | { |
1654 | if (targetdebug < 2 && i > 0) | |
1655 | { | |
1656 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
1657 | break; | |
1658 | } | |
1659 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1660 | } | |
2bc416ba | 1661 | |
27394598 AC |
1662 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
1663 | } | |
1664 | } | |
2bc416ba | 1665 | |
27394598 AC |
1666 | fputc_unfiltered ('\n', gdb_stdlog); |
1667 | } | |
1668 | return retval; | |
1669 | } | |
1670 | ||
c906108c SS |
1671 | /* Read LEN bytes of target memory at address MEMADDR, placing the results in |
1672 | GDB's memory at MYADDR. Returns either 0 for success or an errno value | |
1673 | if any error occurs. | |
1674 | ||
1675 | If an error occurs, no guarantee is made about the contents of the data at | |
1676 | MYADDR. In particular, the caller should not depend upon partial reads | |
1677 | filling the buffer with good data. There is no way for the caller to know | |
1678 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 | 1679 | deal with partial reads should call target_read (which will retry until |
c378eb4e | 1680 | it makes no progress, and then return how much was transferred). */ |
c906108c SS |
1681 | |
1682 | int | |
fc1a4b47 | 1683 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 1684 | { |
c35b1492 PA |
1685 | /* Dispatch to the topmost target, not the flattened current_target. |
1686 | Memory accesses check target->to_has_(all_)memory, and the | |
1687 | flattened target doesn't inherit those. */ | |
1688 | if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1689 | myaddr, memaddr, len) == len) |
1690 | return 0; | |
0779438d | 1691 | else |
cf7a04e8 | 1692 | return EIO; |
c906108c SS |
1693 | } |
1694 | ||
4e5d721f DE |
1695 | /* Like target_read_memory, but specify explicitly that this is a read from |
1696 | the target's stack. This may trigger different cache behavior. */ | |
1697 | ||
1698 | int | |
1699 | target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, int len) | |
1700 | { | |
1701 | /* Dispatch to the topmost target, not the flattened current_target. | |
1702 | Memory accesses check target->to_has_(all_)memory, and the | |
1703 | flattened target doesn't inherit those. */ | |
1704 | ||
1705 | if (target_read (current_target.beneath, TARGET_OBJECT_STACK_MEMORY, NULL, | |
1706 | myaddr, memaddr, len) == len) | |
1707 | return 0; | |
1708 | else | |
1709 | return EIO; | |
1710 | } | |
1711 | ||
7f79c47e DE |
1712 | /* Write LEN bytes from MYADDR to target memory at address MEMADDR. |
1713 | Returns either 0 for success or an errno value if any error occurs. | |
1714 | If an error occurs, no guarantee is made about how much data got written. | |
1715 | Callers that can deal with partial writes should call target_write. */ | |
1716 | ||
c906108c | 1717 | int |
fc1a4b47 | 1718 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) |
c906108c | 1719 | { |
c35b1492 PA |
1720 | /* Dispatch to the topmost target, not the flattened current_target. |
1721 | Memory accesses check target->to_has_(all_)memory, and the | |
1722 | flattened target doesn't inherit those. */ | |
1723 | if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1724 | myaddr, memaddr, len) == len) |
1725 | return 0; | |
0779438d | 1726 | else |
cf7a04e8 | 1727 | return EIO; |
c906108c | 1728 | } |
c5aa993b | 1729 | |
fd79ecee DJ |
1730 | /* Fetch the target's memory map. */ |
1731 | ||
1732 | VEC(mem_region_s) * | |
1733 | target_memory_map (void) | |
1734 | { | |
1735 | VEC(mem_region_s) *result; | |
1736 | struct mem_region *last_one, *this_one; | |
1737 | int ix; | |
1738 | struct target_ops *t; | |
1739 | ||
1740 | if (targetdebug) | |
1741 | fprintf_unfiltered (gdb_stdlog, "target_memory_map ()\n"); | |
1742 | ||
1743 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1744 | if (t->to_memory_map != NULL) | |
1745 | break; | |
1746 | ||
1747 | if (t == NULL) | |
1748 | return NULL; | |
1749 | ||
1750 | result = t->to_memory_map (t); | |
1751 | if (result == NULL) | |
1752 | return NULL; | |
1753 | ||
1754 | qsort (VEC_address (mem_region_s, result), | |
1755 | VEC_length (mem_region_s, result), | |
1756 | sizeof (struct mem_region), mem_region_cmp); | |
1757 | ||
1758 | /* Check that regions do not overlap. Simultaneously assign | |
1759 | a numbering for the "mem" commands to use to refer to | |
1760 | each region. */ | |
1761 | last_one = NULL; | |
1762 | for (ix = 0; VEC_iterate (mem_region_s, result, ix, this_one); ix++) | |
1763 | { | |
1764 | this_one->number = ix; | |
1765 | ||
1766 | if (last_one && last_one->hi > this_one->lo) | |
1767 | { | |
1768 | warning (_("Overlapping regions in memory map: ignoring")); | |
1769 | VEC_free (mem_region_s, result); | |
1770 | return NULL; | |
1771 | } | |
1772 | last_one = this_one; | |
1773 | } | |
1774 | ||
1775 | return result; | |
1776 | } | |
1777 | ||
a76d924d DJ |
1778 | void |
1779 | target_flash_erase (ULONGEST address, LONGEST length) | |
1780 | { | |
1781 | struct target_ops *t; | |
1782 | ||
1783 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1784 | if (t->to_flash_erase != NULL) | |
5d502164 MS |
1785 | { |
1786 | if (targetdebug) | |
1787 | fprintf_unfiltered (gdb_stdlog, "target_flash_erase (%s, %s)\n", | |
1788 | hex_string (address), phex (length, 0)); | |
1789 | t->to_flash_erase (t, address, length); | |
1790 | return; | |
1791 | } | |
a76d924d DJ |
1792 | |
1793 | tcomplain (); | |
1794 | } | |
1795 | ||
1796 | void | |
1797 | target_flash_done (void) | |
1798 | { | |
1799 | struct target_ops *t; | |
1800 | ||
1801 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1802 | if (t->to_flash_done != NULL) | |
5d502164 MS |
1803 | { |
1804 | if (targetdebug) | |
1805 | fprintf_unfiltered (gdb_stdlog, "target_flash_done\n"); | |
1806 | t->to_flash_done (t); | |
1807 | return; | |
1808 | } | |
a76d924d DJ |
1809 | |
1810 | tcomplain (); | |
1811 | } | |
1812 | ||
920d2a44 AC |
1813 | static void |
1814 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1815 | struct cmd_list_element *c, const char *value) | |
1816 | { | |
3e43a32a MS |
1817 | fprintf_filtered (file, |
1818 | _("Mode for reading from readonly sections is %s.\n"), | |
920d2a44 AC |
1819 | value); |
1820 | } | |
3a11626d | 1821 | |
1e3ff5ad AC |
1822 | /* More generic transfers. */ |
1823 | ||
0088c768 | 1824 | static LONGEST |
8aa91c1e | 1825 | default_xfer_partial (struct target_ops *ops, enum target_object object, |
2bc416ba | 1826 | const char *annex, gdb_byte *readbuf, |
1b0ba102 | 1827 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) |
0088c768 AC |
1828 | { |
1829 | if (object == TARGET_OBJECT_MEMORY | |
c8e73a31 AC |
1830 | && ops->deprecated_xfer_memory != NULL) |
1831 | /* If available, fall back to the target's | |
1832 | "deprecated_xfer_memory" method. */ | |
0088c768 | 1833 | { |
4b8a223f | 1834 | int xfered = -1; |
5d502164 | 1835 | |
0088c768 | 1836 | errno = 0; |
4b8a223f AC |
1837 | if (writebuf != NULL) |
1838 | { | |
1839 | void *buffer = xmalloc (len); | |
1840 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |
5d502164 | 1841 | |
4b8a223f | 1842 | memcpy (buffer, writebuf, len); |
c8e73a31 AC |
1843 | xfered = ops->deprecated_xfer_memory (offset, buffer, len, |
1844 | 1/*write*/, NULL, ops); | |
4b8a223f AC |
1845 | do_cleanups (cleanup); |
1846 | } | |
1847 | if (readbuf != NULL) | |
244e85c8 MS |
1848 | xfered = ops->deprecated_xfer_memory (offset, readbuf, len, |
1849 | 0/*read*/, NULL, ops); | |
0088c768 AC |
1850 | if (xfered > 0) |
1851 | return xfered; | |
1852 | else if (xfered == 0 && errno == 0) | |
c8e73a31 AC |
1853 | /* "deprecated_xfer_memory" uses 0, cross checked against |
1854 | ERRNO as one indication of an error. */ | |
0088c768 AC |
1855 | return 0; |
1856 | else | |
1857 | return -1; | |
1858 | } | |
1859 | else if (ops->beneath != NULL) | |
cf7a04e8 DJ |
1860 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, |
1861 | readbuf, writebuf, offset, len); | |
1862 | else | |
1863 | return -1; | |
1864 | } | |
1865 | ||
1866 | /* The xfer_partial handler for the topmost target. Unlike the default, | |
1867 | it does not need to handle memory specially; it just passes all | |
1868 | requests down the stack. */ | |
1869 | ||
1870 | static LONGEST | |
1871 | current_xfer_partial (struct target_ops *ops, enum target_object object, | |
1872 | const char *annex, gdb_byte *readbuf, | |
1873 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1874 | { | |
1875 | if (ops->beneath != NULL) | |
1876 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, | |
1877 | readbuf, writebuf, offset, len); | |
0088c768 AC |
1878 | else |
1879 | return -1; | |
1880 | } | |
1881 | ||
7f79c47e | 1882 | /* Target vector read/write partial wrapper functions. */ |
0088c768 | 1883 | |
13547ab6 | 1884 | static LONGEST |
1e3ff5ad AC |
1885 | target_read_partial (struct target_ops *ops, |
1886 | enum target_object object, | |
1b0ba102 | 1887 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1888 | ULONGEST offset, LONGEST len) |
1889 | { | |
27394598 | 1890 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len); |
1e3ff5ad AC |
1891 | } |
1892 | ||
13547ab6 | 1893 | static LONGEST |
1e3ff5ad AC |
1894 | target_write_partial (struct target_ops *ops, |
1895 | enum target_object object, | |
1b0ba102 | 1896 | const char *annex, const gdb_byte *buf, |
1e3ff5ad AC |
1897 | ULONGEST offset, LONGEST len) |
1898 | { | |
27394598 | 1899 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len); |
1e3ff5ad AC |
1900 | } |
1901 | ||
1902 | /* Wrappers to perform the full transfer. */ | |
7f79c47e DE |
1903 | |
1904 | /* For docs on target_read see target.h. */ | |
1905 | ||
1e3ff5ad AC |
1906 | LONGEST |
1907 | target_read (struct target_ops *ops, | |
1908 | enum target_object object, | |
1b0ba102 | 1909 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1910 | ULONGEST offset, LONGEST len) |
1911 | { | |
1912 | LONGEST xfered = 0; | |
5d502164 | 1913 | |
1e3ff5ad AC |
1914 | while (xfered < len) |
1915 | { | |
0088c768 | 1916 | LONGEST xfer = target_read_partial (ops, object, annex, |
fc1a4b47 | 1917 | (gdb_byte *) buf + xfered, |
0088c768 | 1918 | offset + xfered, len - xfered); |
5d502164 | 1919 | |
1e3ff5ad | 1920 | /* Call an observer, notifying them of the xfer progress? */ |
13547ab6 DJ |
1921 | if (xfer == 0) |
1922 | return xfered; | |
1923 | if (xfer < 0) | |
0088c768 | 1924 | return -1; |
1e3ff5ad AC |
1925 | xfered += xfer; |
1926 | QUIT; | |
1927 | } | |
1928 | return len; | |
1929 | } | |
1930 | ||
8dedea02 VP |
1931 | /** Assuming that the entire [begin, end) range of memory cannot be read, |
1932 | try to read whatever subrange is possible to read. | |
1933 | ||
1934 | The function results, in RESULT, either zero or one memory block. | |
1935 | If there's a readable subrange at the beginning, it is completely | |
c378eb4e | 1936 | read and returned. Any further readable subrange will not be read. |
8dedea02 VP |
1937 | Otherwise, if there's a readable subrange at the end, it will be |
1938 | completely read and returned. Any readable subranges before it (obviously, | |
c378eb4e | 1939 | not starting at the beginning), will be ignored. In other cases -- |
8dedea02 VP |
1940 | either no readable subrange, or readable subrange (s) that is neither |
1941 | at the beginning, or end, nothing is returned. | |
1942 | ||
1943 | The purpose of this function is to handle a read across a boundary of | |
c378eb4e | 1944 | accessible memory in a case when memory map is not available. The above |
8dedea02 | 1945 | restrictions are fine for this case, but will give incorrect results if |
c378eb4e | 1946 | the memory is 'patchy'. However, supporting 'patchy' memory would require |
8dedea02 VP |
1947 | trying to read every single byte, and it seems unacceptable solution. |
1948 | Explicit memory map is recommended for this case -- and | |
3e43a32a MS |
1949 | target_read_memory_robust will take care of reading multiple ranges |
1950 | then. */ | |
8dedea02 VP |
1951 | |
1952 | static void | |
3e43a32a MS |
1953 | read_whatever_is_readable (struct target_ops *ops, |
1954 | ULONGEST begin, ULONGEST end, | |
8dedea02 | 1955 | VEC(memory_read_result_s) **result) |
d5086790 | 1956 | { |
8dedea02 VP |
1957 | gdb_byte *buf = xmalloc (end-begin); |
1958 | ULONGEST current_begin = begin; | |
1959 | ULONGEST current_end = end; | |
1960 | int forward; | |
1961 | memory_read_result_s r; | |
1962 | ||
1963 | /* If we previously failed to read 1 byte, nothing can be done here. */ | |
1964 | if (end - begin <= 1) | |
1965 | return; | |
1966 | ||
1967 | /* Check that either first or the last byte is readable, and give up | |
c378eb4e | 1968 | if not. This heuristic is meant to permit reading accessible memory |
8dedea02 VP |
1969 | at the boundary of accessible region. */ |
1970 | if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
1971 | buf, begin, 1) == 1) | |
1972 | { | |
1973 | forward = 1; | |
1974 | ++current_begin; | |
1975 | } | |
1976 | else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
1977 | buf + (end-begin) - 1, end - 1, 1) == 1) | |
1978 | { | |
1979 | forward = 0; | |
1980 | --current_end; | |
1981 | } | |
1982 | else | |
1983 | { | |
1984 | return; | |
1985 | } | |
1986 | ||
1987 | /* Loop invariant is that the [current_begin, current_end) was previously | |
1988 | found to be not readable as a whole. | |
1989 | ||
1990 | Note loop condition -- if the range has 1 byte, we can't divide the range | |
1991 | so there's no point trying further. */ | |
1992 | while (current_end - current_begin > 1) | |
1993 | { | |
1994 | ULONGEST first_half_begin, first_half_end; | |
1995 | ULONGEST second_half_begin, second_half_end; | |
1996 | LONGEST xfer; | |
5d502164 | 1997 | |
8dedea02 VP |
1998 | ULONGEST middle = current_begin + (current_end - current_begin)/2; |
1999 | if (forward) | |
2000 | { | |
2001 | first_half_begin = current_begin; | |
2002 | first_half_end = middle; | |
2003 | second_half_begin = middle; | |
2004 | second_half_end = current_end; | |
2005 | } | |
2006 | else | |
2007 | { | |
2008 | first_half_begin = middle; | |
2009 | first_half_end = current_end; | |
2010 | second_half_begin = current_begin; | |
2011 | second_half_end = middle; | |
2012 | } | |
2013 | ||
2014 | xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2015 | buf + (first_half_begin - begin), | |
2016 | first_half_begin, | |
2017 | first_half_end - first_half_begin); | |
2018 | ||
2019 | if (xfer == first_half_end - first_half_begin) | |
2020 | { | |
c378eb4e | 2021 | /* This half reads up fine. So, the error must be in the |
3e43a32a | 2022 | other half. */ |
8dedea02 VP |
2023 | current_begin = second_half_begin; |
2024 | current_end = second_half_end; | |
2025 | } | |
2026 | else | |
2027 | { | |
c378eb4e MS |
2028 | /* This half is not readable. Because we've tried one byte, we |
2029 | know some part of this half if actually redable. Go to the next | |
8dedea02 VP |
2030 | iteration to divide again and try to read. |
2031 | ||
2032 | We don't handle the other half, because this function only tries | |
2033 | to read a single readable subrange. */ | |
2034 | current_begin = first_half_begin; | |
2035 | current_end = first_half_end; | |
2036 | } | |
2037 | } | |
2038 | ||
2039 | if (forward) | |
2040 | { | |
2041 | /* The [begin, current_begin) range has been read. */ | |
2042 | r.begin = begin; | |
2043 | r.end = current_begin; | |
2044 | r.data = buf; | |
2045 | } | |
2046 | else | |
2047 | { | |
2048 | /* The [current_end, end) range has been read. */ | |
2049 | LONGEST rlen = end - current_end; | |
2050 | r.data = xmalloc (rlen); | |
2051 | memcpy (r.data, buf + current_end - begin, rlen); | |
2052 | r.begin = current_end; | |
2053 | r.end = end; | |
2054 | xfree (buf); | |
2055 | } | |
2056 | VEC_safe_push(memory_read_result_s, (*result), &r); | |
2057 | } | |
2058 | ||
2059 | void | |
2060 | free_memory_read_result_vector (void *x) | |
2061 | { | |
2062 | VEC(memory_read_result_s) *v = x; | |
2063 | memory_read_result_s *current; | |
2064 | int ix; | |
2065 | ||
2066 | for (ix = 0; VEC_iterate (memory_read_result_s, v, ix, current); ++ix) | |
2067 | { | |
2068 | xfree (current->data); | |
2069 | } | |
2070 | VEC_free (memory_read_result_s, v); | |
2071 | } | |
2072 | ||
2073 | VEC(memory_read_result_s) * | |
2074 | read_memory_robust (struct target_ops *ops, ULONGEST offset, LONGEST len) | |
2075 | { | |
2076 | VEC(memory_read_result_s) *result = 0; | |
2077 | ||
2078 | LONGEST xfered = 0; | |
d5086790 VP |
2079 | while (xfered < len) |
2080 | { | |
8dedea02 VP |
2081 | struct mem_region *region = lookup_mem_region (offset + xfered); |
2082 | LONGEST rlen; | |
5d502164 | 2083 | |
8dedea02 VP |
2084 | /* If there is no explicit region, a fake one should be created. */ |
2085 | gdb_assert (region); | |
2086 | ||
2087 | if (region->hi == 0) | |
2088 | rlen = len - xfered; | |
2089 | else | |
2090 | rlen = region->hi - offset; | |
2091 | ||
2092 | if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO) | |
d5086790 | 2093 | { |
c378eb4e | 2094 | /* Cannot read this region. Note that we can end up here only |
8dedea02 VP |
2095 | if the region is explicitly marked inaccessible, or |
2096 | 'inaccessible-by-default' is in effect. */ | |
2097 | xfered += rlen; | |
2098 | } | |
2099 | else | |
2100 | { | |
2101 | LONGEST to_read = min (len - xfered, rlen); | |
2102 | gdb_byte *buffer = (gdb_byte *)xmalloc (to_read); | |
2103 | ||
2104 | LONGEST xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2105 | (gdb_byte *) buffer, | |
2106 | offset + xfered, to_read); | |
2107 | /* Call an observer, notifying them of the xfer progress? */ | |
d5086790 | 2108 | if (xfer <= 0) |
d5086790 | 2109 | { |
c378eb4e | 2110 | /* Got an error reading full chunk. See if maybe we can read |
8dedea02 VP |
2111 | some subrange. */ |
2112 | xfree (buffer); | |
3e43a32a MS |
2113 | read_whatever_is_readable (ops, offset + xfered, |
2114 | offset + xfered + to_read, &result); | |
8dedea02 | 2115 | xfered += to_read; |
d5086790 | 2116 | } |
8dedea02 VP |
2117 | else |
2118 | { | |
2119 | struct memory_read_result r; | |
2120 | r.data = buffer; | |
2121 | r.begin = offset + xfered; | |
2122 | r.end = r.begin + xfer; | |
2123 | VEC_safe_push (memory_read_result_s, result, &r); | |
2124 | xfered += xfer; | |
2125 | } | |
2126 | QUIT; | |
d5086790 | 2127 | } |
d5086790 | 2128 | } |
8dedea02 | 2129 | return result; |
d5086790 VP |
2130 | } |
2131 | ||
8dedea02 | 2132 | |
cf7a04e8 DJ |
2133 | /* An alternative to target_write with progress callbacks. */ |
2134 | ||
1e3ff5ad | 2135 | LONGEST |
cf7a04e8 DJ |
2136 | target_write_with_progress (struct target_ops *ops, |
2137 | enum target_object object, | |
2138 | const char *annex, const gdb_byte *buf, | |
2139 | ULONGEST offset, LONGEST len, | |
2140 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad AC |
2141 | { |
2142 | LONGEST xfered = 0; | |
a76d924d DJ |
2143 | |
2144 | /* Give the progress callback a chance to set up. */ | |
2145 | if (progress) | |
2146 | (*progress) (0, baton); | |
2147 | ||
1e3ff5ad AC |
2148 | while (xfered < len) |
2149 | { | |
2150 | LONGEST xfer = target_write_partial (ops, object, annex, | |
fc1a4b47 | 2151 | (gdb_byte *) buf + xfered, |
1e3ff5ad | 2152 | offset + xfered, len - xfered); |
cf7a04e8 | 2153 | |
13547ab6 DJ |
2154 | if (xfer == 0) |
2155 | return xfered; | |
2156 | if (xfer < 0) | |
0088c768 | 2157 | return -1; |
cf7a04e8 DJ |
2158 | |
2159 | if (progress) | |
2160 | (*progress) (xfer, baton); | |
2161 | ||
1e3ff5ad AC |
2162 | xfered += xfer; |
2163 | QUIT; | |
2164 | } | |
2165 | return len; | |
2166 | } | |
2167 | ||
7f79c47e DE |
2168 | /* For docs on target_write see target.h. */ |
2169 | ||
cf7a04e8 DJ |
2170 | LONGEST |
2171 | target_write (struct target_ops *ops, | |
2172 | enum target_object object, | |
2173 | const char *annex, const gdb_byte *buf, | |
2174 | ULONGEST offset, LONGEST len) | |
2175 | { | |
2176 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
2177 | NULL, NULL); | |
2178 | } | |
2179 | ||
159f81f3 DJ |
2180 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
2181 | the size of the transferred data. PADDING additional bytes are | |
2182 | available in *BUF_P. This is a helper function for | |
2183 | target_read_alloc; see the declaration of that function for more | |
2184 | information. */ | |
13547ab6 | 2185 | |
159f81f3 DJ |
2186 | static LONGEST |
2187 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, | |
2188 | const char *annex, gdb_byte **buf_p, int padding) | |
13547ab6 DJ |
2189 | { |
2190 | size_t buf_alloc, buf_pos; | |
2191 | gdb_byte *buf; | |
2192 | LONGEST n; | |
2193 | ||
2194 | /* This function does not have a length parameter; it reads the | |
2195 | entire OBJECT). Also, it doesn't support objects fetched partly | |
2196 | from one target and partly from another (in a different stratum, | |
2197 | e.g. a core file and an executable). Both reasons make it | |
2198 | unsuitable for reading memory. */ | |
2199 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
2200 | ||
2201 | /* Start by reading up to 4K at a time. The target will throttle | |
2202 | this number down if necessary. */ | |
2203 | buf_alloc = 4096; | |
2204 | buf = xmalloc (buf_alloc); | |
2205 | buf_pos = 0; | |
2206 | while (1) | |
2207 | { | |
2208 | n = target_read_partial (ops, object, annex, &buf[buf_pos], | |
159f81f3 | 2209 | buf_pos, buf_alloc - buf_pos - padding); |
13547ab6 DJ |
2210 | if (n < 0) |
2211 | { | |
2212 | /* An error occurred. */ | |
2213 | xfree (buf); | |
2214 | return -1; | |
2215 | } | |
2216 | else if (n == 0) | |
2217 | { | |
2218 | /* Read all there was. */ | |
2219 | if (buf_pos == 0) | |
2220 | xfree (buf); | |
2221 | else | |
2222 | *buf_p = buf; | |
2223 | return buf_pos; | |
2224 | } | |
2225 | ||
2226 | buf_pos += n; | |
2227 | ||
2228 | /* If the buffer is filling up, expand it. */ | |
2229 | if (buf_alloc < buf_pos * 2) | |
2230 | { | |
2231 | buf_alloc *= 2; | |
2232 | buf = xrealloc (buf, buf_alloc); | |
2233 | } | |
2234 | ||
2235 | QUIT; | |
2236 | } | |
2237 | } | |
2238 | ||
159f81f3 DJ |
2239 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
2240 | the size of the transferred data. See the declaration in "target.h" | |
2241 | function for more information about the return value. */ | |
2242 | ||
2243 | LONGEST | |
2244 | target_read_alloc (struct target_ops *ops, enum target_object object, | |
2245 | const char *annex, gdb_byte **buf_p) | |
2246 | { | |
2247 | return target_read_alloc_1 (ops, object, annex, buf_p, 0); | |
2248 | } | |
2249 | ||
2250 | /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and | |
2251 | returned as a string, allocated using xmalloc. If an error occurs | |
2252 | or the transfer is unsupported, NULL is returned. Empty objects | |
2253 | are returned as allocated but empty strings. A warning is issued | |
2254 | if the result contains any embedded NUL bytes. */ | |
2255 | ||
2256 | char * | |
2257 | target_read_stralloc (struct target_ops *ops, enum target_object object, | |
2258 | const char *annex) | |
2259 | { | |
2260 | gdb_byte *buffer; | |
2261 | LONGEST transferred; | |
2262 | ||
2263 | transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1); | |
2264 | ||
2265 | if (transferred < 0) | |
2266 | return NULL; | |
2267 | ||
2268 | if (transferred == 0) | |
2269 | return xstrdup (""); | |
2270 | ||
2271 | buffer[transferred] = 0; | |
2272 | if (strlen (buffer) < transferred) | |
2273 | warning (_("target object %d, annex %s, " | |
2274 | "contained unexpected null characters"), | |
2275 | (int) object, annex ? annex : "(none)"); | |
2276 | ||
2277 | return (char *) buffer; | |
2278 | } | |
2279 | ||
b6591e8b AC |
2280 | /* Memory transfer methods. */ |
2281 | ||
2282 | void | |
1b0ba102 | 2283 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
2284 | LONGEST len) |
2285 | { | |
07b82ea5 PA |
2286 | /* This method is used to read from an alternate, non-current |
2287 | target. This read must bypass the overlay support (as symbols | |
2288 | don't match this target), and GDB's internal cache (wrong cache | |
2289 | for this target). */ | |
2290 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) | |
b6591e8b AC |
2291 | != len) |
2292 | memory_error (EIO, addr); | |
2293 | } | |
2294 | ||
2295 | ULONGEST | |
5d502164 MS |
2296 | get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr, |
2297 | int len, enum bfd_endian byte_order) | |
b6591e8b | 2298 | { |
f6519ebc | 2299 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
2300 | |
2301 | gdb_assert (len <= sizeof (buf)); | |
2302 | get_target_memory (ops, addr, buf, len); | |
e17a4113 | 2303 | return extract_unsigned_integer (buf, len, byte_order); |
b6591e8b AC |
2304 | } |
2305 | ||
d914c394 SS |
2306 | int |
2307 | target_insert_breakpoint (struct gdbarch *gdbarch, | |
2308 | struct bp_target_info *bp_tgt) | |
2309 | { | |
2310 | if (!may_insert_breakpoints) | |
2311 | { | |
2312 | warning (_("May not insert breakpoints")); | |
2313 | return 1; | |
2314 | } | |
2315 | ||
2316 | return (*current_target.to_insert_breakpoint) (gdbarch, bp_tgt); | |
2317 | } | |
2318 | ||
2319 | int | |
2320 | target_remove_breakpoint (struct gdbarch *gdbarch, | |
2321 | struct bp_target_info *bp_tgt) | |
2322 | { | |
2323 | /* This is kind of a weird case to handle, but the permission might | |
2324 | have been changed after breakpoints were inserted - in which case | |
2325 | we should just take the user literally and assume that any | |
2326 | breakpoints should be left in place. */ | |
2327 | if (!may_insert_breakpoints) | |
2328 | { | |
2329 | warning (_("May not remove breakpoints")); | |
2330 | return 1; | |
2331 | } | |
2332 | ||
2333 | return (*current_target.to_remove_breakpoint) (gdbarch, bp_tgt); | |
2334 | } | |
2335 | ||
c906108c | 2336 | static void |
fba45db2 | 2337 | target_info (char *args, int from_tty) |
c906108c SS |
2338 | { |
2339 | struct target_ops *t; | |
c906108c | 2340 | int has_all_mem = 0; |
c5aa993b | 2341 | |
c906108c | 2342 | if (symfile_objfile != NULL) |
a3f17187 | 2343 | printf_unfiltered (_("Symbols from \"%s\".\n"), symfile_objfile->name); |
c906108c | 2344 | |
258b763a | 2345 | for (t = target_stack; t != NULL; t = t->beneath) |
c906108c | 2346 | { |
c35b1492 | 2347 | if (!(*t->to_has_memory) (t)) |
c906108c SS |
2348 | continue; |
2349 | ||
c5aa993b | 2350 | if ((int) (t->to_stratum) <= (int) dummy_stratum) |
c906108c SS |
2351 | continue; |
2352 | if (has_all_mem) | |
3e43a32a MS |
2353 | printf_unfiltered (_("\tWhile running this, " |
2354 | "GDB does not access memory from...\n")); | |
c5aa993b JM |
2355 | printf_unfiltered ("%s:\n", t->to_longname); |
2356 | (t->to_files_info) (t); | |
c35b1492 | 2357 | has_all_mem = (*t->to_has_all_memory) (t); |
c906108c SS |
2358 | } |
2359 | } | |
2360 | ||
fd79ecee DJ |
2361 | /* This function is called before any new inferior is created, e.g. |
2362 | by running a program, attaching, or connecting to a target. | |
2363 | It cleans up any state from previous invocations which might | |
2364 | change between runs. This is a subset of what target_preopen | |
2365 | resets (things which might change between targets). */ | |
2366 | ||
2367 | void | |
2368 | target_pre_inferior (int from_tty) | |
2369 | { | |
c378eb4e | 2370 | /* Clear out solib state. Otherwise the solib state of the previous |
b9db4ced | 2371 | inferior might have survived and is entirely wrong for the new |
c378eb4e | 2372 | target. This has been observed on GNU/Linux using glibc 2.3. How |
b9db4ced UW |
2373 | to reproduce: |
2374 | ||
2375 | bash$ ./foo& | |
2376 | [1] 4711 | |
2377 | bash$ ./foo& | |
2378 | [1] 4712 | |
2379 | bash$ gdb ./foo | |
2380 | [...] | |
2381 | (gdb) attach 4711 | |
2382 | (gdb) detach | |
2383 | (gdb) attach 4712 | |
2384 | Cannot access memory at address 0xdeadbeef | |
2385 | */ | |
b9db4ced | 2386 | |
50c71eaf PA |
2387 | /* In some OSs, the shared library list is the same/global/shared |
2388 | across inferiors. If code is shared between processes, so are | |
2389 | memory regions and features. */ | |
2390 | if (!gdbarch_has_global_solist (target_gdbarch)) | |
2391 | { | |
2392 | no_shared_libraries (NULL, from_tty); | |
2393 | ||
2394 | invalidate_target_mem_regions (); | |
424163ea | 2395 | |
50c71eaf PA |
2396 | target_clear_description (); |
2397 | } | |
fd79ecee DJ |
2398 | } |
2399 | ||
b8fa0bfa PA |
2400 | /* Callback for iterate_over_inferiors. Gets rid of the given |
2401 | inferior. */ | |
2402 | ||
2403 | static int | |
2404 | dispose_inferior (struct inferior *inf, void *args) | |
2405 | { | |
2406 | struct thread_info *thread; | |
2407 | ||
2408 | thread = any_thread_of_process (inf->pid); | |
2409 | if (thread) | |
2410 | { | |
2411 | switch_to_thread (thread->ptid); | |
2412 | ||
2413 | /* Core inferiors actually should be detached, not killed. */ | |
2414 | if (target_has_execution) | |
2415 | target_kill (); | |
2416 | else | |
2417 | target_detach (NULL, 0); | |
2418 | } | |
2419 | ||
2420 | return 0; | |
2421 | } | |
2422 | ||
c906108c SS |
2423 | /* This is to be called by the open routine before it does |
2424 | anything. */ | |
2425 | ||
2426 | void | |
fba45db2 | 2427 | target_preopen (int from_tty) |
c906108c | 2428 | { |
c5aa993b | 2429 | dont_repeat (); |
c906108c | 2430 | |
b8fa0bfa | 2431 | if (have_inferiors ()) |
c5aa993b | 2432 | { |
adf40b2e | 2433 | if (!from_tty |
b8fa0bfa PA |
2434 | || !have_live_inferiors () |
2435 | || query (_("A program is being debugged already. Kill it? "))) | |
2436 | iterate_over_inferiors (dispose_inferior, NULL); | |
c906108c | 2437 | else |
8a3fe4f8 | 2438 | error (_("Program not killed.")); |
c906108c SS |
2439 | } |
2440 | ||
2441 | /* Calling target_kill may remove the target from the stack. But if | |
2442 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
2443 | /* Leave the exec target, though. The user may be switching from a |
2444 | live process to a core of the same program. */ | |
2445 | pop_all_targets_above (file_stratum, 0); | |
fd79ecee DJ |
2446 | |
2447 | target_pre_inferior (from_tty); | |
c906108c SS |
2448 | } |
2449 | ||
2450 | /* Detach a target after doing deferred register stores. */ | |
2451 | ||
2452 | void | |
fba45db2 | 2453 | target_detach (char *args, int from_tty) |
c906108c | 2454 | { |
136d6dae VP |
2455 | struct target_ops* t; |
2456 | ||
2567c7d9 | 2457 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
2458 | /* Don't remove global breakpoints here. They're removed on |
2459 | disconnection from the target. */ | |
2460 | ; | |
2461 | else | |
2462 | /* If we're in breakpoints-always-inserted mode, have to remove | |
2463 | them before detaching. */ | |
6c95b8df | 2464 | remove_breakpoints_pid (PIDGET (inferior_ptid)); |
74960c60 | 2465 | |
24291992 PA |
2466 | prepare_for_detach (); |
2467 | ||
136d6dae VP |
2468 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2469 | { | |
2470 | if (t->to_detach != NULL) | |
2471 | { | |
2472 | t->to_detach (t, args, from_tty); | |
947b8855 PA |
2473 | if (targetdebug) |
2474 | fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n", | |
2475 | args, from_tty); | |
136d6dae VP |
2476 | return; |
2477 | } | |
2478 | } | |
2479 | ||
9b20d036 | 2480 | internal_error (__FILE__, __LINE__, _("could not find a target to detach")); |
c906108c SS |
2481 | } |
2482 | ||
6ad8ae5c DJ |
2483 | void |
2484 | target_disconnect (char *args, int from_tty) | |
2485 | { | |
597320e7 DJ |
2486 | struct target_ops *t; |
2487 | ||
50c71eaf PA |
2488 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
2489 | are global across processes, we have to remove them before | |
2490 | disconnecting. */ | |
74960c60 VP |
2491 | remove_breakpoints (); |
2492 | ||
597320e7 DJ |
2493 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2494 | if (t->to_disconnect != NULL) | |
2495 | { | |
2496 | if (targetdebug) | |
2497 | fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n", | |
2498 | args, from_tty); | |
2499 | t->to_disconnect (t, args, from_tty); | |
2500 | return; | |
2501 | } | |
2502 | ||
2503 | tcomplain (); | |
6ad8ae5c DJ |
2504 | } |
2505 | ||
117de6a9 | 2506 | ptid_t |
47608cb1 | 2507 | target_wait (ptid_t ptid, struct target_waitstatus *status, int options) |
117de6a9 PA |
2508 | { |
2509 | struct target_ops *t; | |
2510 | ||
2511 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2512 | { | |
2513 | if (t->to_wait != NULL) | |
2514 | { | |
47608cb1 | 2515 | ptid_t retval = (*t->to_wait) (t, ptid, status, options); |
117de6a9 PA |
2516 | |
2517 | if (targetdebug) | |
2518 | { | |
2519 | char *status_string; | |
2520 | ||
2521 | status_string = target_waitstatus_to_string (status); | |
2522 | fprintf_unfiltered (gdb_stdlog, | |
2523 | "target_wait (%d, status) = %d, %s\n", | |
2524 | PIDGET (ptid), PIDGET (retval), | |
2525 | status_string); | |
2526 | xfree (status_string); | |
2527 | } | |
2528 | ||
2529 | return retval; | |
2530 | } | |
2531 | } | |
2532 | ||
2533 | noprocess (); | |
2534 | } | |
2535 | ||
2536 | char * | |
2537 | target_pid_to_str (ptid_t ptid) | |
2538 | { | |
2539 | struct target_ops *t; | |
2540 | ||
2541 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2542 | { | |
2543 | if (t->to_pid_to_str != NULL) | |
2544 | return (*t->to_pid_to_str) (t, ptid); | |
2545 | } | |
2546 | ||
2547 | return normal_pid_to_str (ptid); | |
2548 | } | |
2549 | ||
4694da01 TT |
2550 | char * |
2551 | target_thread_name (struct thread_info *info) | |
2552 | { | |
2553 | struct target_ops *t; | |
2554 | ||
2555 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2556 | { | |
2557 | if (t->to_thread_name != NULL) | |
2558 | return (*t->to_thread_name) (info); | |
2559 | } | |
2560 | ||
2561 | return NULL; | |
2562 | } | |
2563 | ||
e1ac3328 VP |
2564 | void |
2565 | target_resume (ptid_t ptid, int step, enum target_signal signal) | |
2566 | { | |
28439f5e PA |
2567 | struct target_ops *t; |
2568 | ||
4e5d721f | 2569 | target_dcache_invalidate (); |
28439f5e PA |
2570 | |
2571 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2572 | { | |
2573 | if (t->to_resume != NULL) | |
2574 | { | |
2575 | t->to_resume (t, ptid, step, signal); | |
2576 | if (targetdebug) | |
2577 | fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n", | |
2578 | PIDGET (ptid), | |
2579 | step ? "step" : "continue", | |
2580 | target_signal_to_name (signal)); | |
2581 | ||
e66408ed | 2582 | registers_changed_ptid (ptid); |
28439f5e PA |
2583 | set_executing (ptid, 1); |
2584 | set_running (ptid, 1); | |
edb3359d | 2585 | clear_inline_frame_state (ptid); |
28439f5e PA |
2586 | return; |
2587 | } | |
2588 | } | |
2589 | ||
2590 | noprocess (); | |
e1ac3328 | 2591 | } |
ee057212 DJ |
2592 | /* Look through the list of possible targets for a target that can |
2593 | follow forks. */ | |
2594 | ||
2595 | int | |
2596 | target_follow_fork (int follow_child) | |
2597 | { | |
2598 | struct target_ops *t; | |
2599 | ||
2600 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2601 | { | |
2602 | if (t->to_follow_fork != NULL) | |
2603 | { | |
2604 | int retval = t->to_follow_fork (t, follow_child); | |
5d502164 | 2605 | |
ee057212 DJ |
2606 | if (targetdebug) |
2607 | fprintf_unfiltered (gdb_stdlog, "target_follow_fork (%d) = %d\n", | |
2608 | follow_child, retval); | |
2609 | return retval; | |
2610 | } | |
2611 | } | |
2612 | ||
2613 | /* Some target returned a fork event, but did not know how to follow it. */ | |
2614 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 2615 | _("could not find a target to follow fork")); |
ee057212 DJ |
2616 | } |
2617 | ||
136d6dae VP |
2618 | void |
2619 | target_mourn_inferior (void) | |
2620 | { | |
2621 | struct target_ops *t; | |
5d502164 | 2622 | |
136d6dae VP |
2623 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2624 | { | |
2625 | if (t->to_mourn_inferior != NULL) | |
2626 | { | |
2627 | t->to_mourn_inferior (t); | |
947b8855 PA |
2628 | if (targetdebug) |
2629 | fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n"); | |
efbd6e75 JB |
2630 | |
2631 | /* We no longer need to keep handles on any of the object files. | |
2632 | Make sure to release them to avoid unnecessarily locking any | |
2633 | of them while we're not actually debugging. */ | |
2634 | bfd_cache_close_all (); | |
2635 | ||
136d6dae VP |
2636 | return; |
2637 | } | |
2638 | } | |
2639 | ||
2640 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 2641 | _("could not find a target to follow mourn inferior")); |
136d6dae VP |
2642 | } |
2643 | ||
424163ea DJ |
2644 | /* Look for a target which can describe architectural features, starting |
2645 | from TARGET. If we find one, return its description. */ | |
2646 | ||
2647 | const struct target_desc * | |
2648 | target_read_description (struct target_ops *target) | |
2649 | { | |
2650 | struct target_ops *t; | |
2651 | ||
2652 | for (t = target; t != NULL; t = t->beneath) | |
2653 | if (t->to_read_description != NULL) | |
2654 | { | |
2655 | const struct target_desc *tdesc; | |
2656 | ||
2657 | tdesc = t->to_read_description (t); | |
2658 | if (tdesc) | |
2659 | return tdesc; | |
2660 | } | |
2661 | ||
2662 | return NULL; | |
2663 | } | |
2664 | ||
08388c79 DE |
2665 | /* The default implementation of to_search_memory. |
2666 | This implements a basic search of memory, reading target memory and | |
2667 | performing the search here (as opposed to performing the search in on the | |
2668 | target side with, for example, gdbserver). */ | |
2669 | ||
2670 | int | |
2671 | simple_search_memory (struct target_ops *ops, | |
2672 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2673 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2674 | CORE_ADDR *found_addrp) | |
2675 | { | |
2676 | /* NOTE: also defined in find.c testcase. */ | |
2677 | #define SEARCH_CHUNK_SIZE 16000 | |
2678 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
2679 | /* Buffer to hold memory contents for searching. */ | |
2680 | gdb_byte *search_buf; | |
2681 | unsigned search_buf_size; | |
2682 | struct cleanup *old_cleanups; | |
2683 | ||
2684 | search_buf_size = chunk_size + pattern_len - 1; | |
2685 | ||
2686 | /* No point in trying to allocate a buffer larger than the search space. */ | |
2687 | if (search_space_len < search_buf_size) | |
2688 | search_buf_size = search_space_len; | |
2689 | ||
2690 | search_buf = malloc (search_buf_size); | |
2691 | if (search_buf == NULL) | |
5e1471f5 | 2692 | error (_("Unable to allocate memory to perform the search.")); |
08388c79 DE |
2693 | old_cleanups = make_cleanup (free_current_contents, &search_buf); |
2694 | ||
2695 | /* Prime the search buffer. */ | |
2696 | ||
2697 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2698 | search_buf, start_addr, search_buf_size) != search_buf_size) | |
2699 | { | |
5e1471f5 | 2700 | warning (_("Unable to access target memory at %s, halting search."), |
08388c79 DE |
2701 | hex_string (start_addr)); |
2702 | do_cleanups (old_cleanups); | |
2703 | return -1; | |
2704 | } | |
2705 | ||
2706 | /* Perform the search. | |
2707 | ||
2708 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
2709 | When we've scanned N bytes we copy the trailing bytes to the start and | |
2710 | read in another N bytes. */ | |
2711 | ||
2712 | while (search_space_len >= pattern_len) | |
2713 | { | |
2714 | gdb_byte *found_ptr; | |
2715 | unsigned nr_search_bytes = min (search_space_len, search_buf_size); | |
2716 | ||
2717 | found_ptr = memmem (search_buf, nr_search_bytes, | |
2718 | pattern, pattern_len); | |
2719 | ||
2720 | if (found_ptr != NULL) | |
2721 | { | |
2722 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
5d502164 | 2723 | |
08388c79 DE |
2724 | *found_addrp = found_addr; |
2725 | do_cleanups (old_cleanups); | |
2726 | return 1; | |
2727 | } | |
2728 | ||
2729 | /* Not found in this chunk, skip to next chunk. */ | |
2730 | ||
2731 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
2732 | if (search_space_len >= chunk_size) | |
2733 | search_space_len -= chunk_size; | |
2734 | else | |
2735 | search_space_len = 0; | |
2736 | ||
2737 | if (search_space_len >= pattern_len) | |
2738 | { | |
2739 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 2740 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
2741 | int nr_to_read; |
2742 | ||
2743 | /* Copy the trailing part of the previous iteration to the front | |
2744 | of the buffer for the next iteration. */ | |
2745 | gdb_assert (keep_len == pattern_len - 1); | |
2746 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
2747 | ||
2748 | nr_to_read = min (search_space_len - keep_len, chunk_size); | |
2749 | ||
2750 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2751 | search_buf + keep_len, read_addr, | |
2752 | nr_to_read) != nr_to_read) | |
2753 | { | |
9b20d036 MS |
2754 | warning (_("Unable to access target " |
2755 | "memory at %s, halting search."), | |
08388c79 DE |
2756 | hex_string (read_addr)); |
2757 | do_cleanups (old_cleanups); | |
2758 | return -1; | |
2759 | } | |
2760 | ||
2761 | start_addr += chunk_size; | |
2762 | } | |
2763 | } | |
2764 | ||
2765 | /* Not found. */ | |
2766 | ||
2767 | do_cleanups (old_cleanups); | |
2768 | return 0; | |
2769 | } | |
2770 | ||
2771 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the | |
2772 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2773 | ||
2774 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2775 | requiring halting of the search (e.g. memory read error). | |
2776 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2777 | ||
2778 | int | |
2779 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2780 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2781 | CORE_ADDR *found_addrp) | |
2782 | { | |
2783 | struct target_ops *t; | |
2784 | int found; | |
2785 | ||
2786 | /* We don't use INHERIT to set current_target.to_search_memory, | |
2787 | so we have to scan the target stack and handle targetdebug | |
2788 | ourselves. */ | |
2789 | ||
2790 | if (targetdebug) | |
2791 | fprintf_unfiltered (gdb_stdlog, "target_search_memory (%s, ...)\n", | |
2792 | hex_string (start_addr)); | |
2793 | ||
2794 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2795 | if (t->to_search_memory != NULL) | |
2796 | break; | |
2797 | ||
2798 | if (t != NULL) | |
2799 | { | |
2800 | found = t->to_search_memory (t, start_addr, search_space_len, | |
2801 | pattern, pattern_len, found_addrp); | |
2802 | } | |
2803 | else | |
2804 | { | |
2805 | /* If a special version of to_search_memory isn't available, use the | |
2806 | simple version. */ | |
c35b1492 | 2807 | found = simple_search_memory (current_target.beneath, |
08388c79 DE |
2808 | start_addr, search_space_len, |
2809 | pattern, pattern_len, found_addrp); | |
2810 | } | |
2811 | ||
2812 | if (targetdebug) | |
2813 | fprintf_unfiltered (gdb_stdlog, " = %d\n", found); | |
2814 | ||
2815 | return found; | |
2816 | } | |
2817 | ||
8edfe269 DJ |
2818 | /* Look through the currently pushed targets. If none of them will |
2819 | be able to restart the currently running process, issue an error | |
2820 | message. */ | |
2821 | ||
2822 | void | |
2823 | target_require_runnable (void) | |
2824 | { | |
2825 | struct target_ops *t; | |
2826 | ||
2827 | for (t = target_stack; t != NULL; t = t->beneath) | |
2828 | { | |
2829 | /* If this target knows how to create a new program, then | |
2830 | assume we will still be able to after killing the current | |
2831 | one. Either killing and mourning will not pop T, or else | |
2832 | find_default_run_target will find it again. */ | |
2833 | if (t->to_create_inferior != NULL) | |
2834 | return; | |
2835 | ||
2836 | /* Do not worry about thread_stratum targets that can not | |
2837 | create inferiors. Assume they will be pushed again if | |
2838 | necessary, and continue to the process_stratum. */ | |
85e747d2 UW |
2839 | if (t->to_stratum == thread_stratum |
2840 | || t->to_stratum == arch_stratum) | |
8edfe269 DJ |
2841 | continue; |
2842 | ||
3e43a32a MS |
2843 | error (_("The \"%s\" target does not support \"run\". " |
2844 | "Try \"help target\" or \"continue\"."), | |
8edfe269 DJ |
2845 | t->to_shortname); |
2846 | } | |
2847 | ||
2848 | /* This function is only called if the target is running. In that | |
2849 | case there should have been a process_stratum target and it | |
c378eb4e | 2850 | should either know how to create inferiors, or not... */ |
9b20d036 | 2851 | internal_error (__FILE__, __LINE__, _("No targets found")); |
8edfe269 DJ |
2852 | } |
2853 | ||
c906108c SS |
2854 | /* Look through the list of possible targets for a target that can |
2855 | execute a run or attach command without any other data. This is | |
2856 | used to locate the default process stratum. | |
2857 | ||
5f667f2d PA |
2858 | If DO_MESG is not NULL, the result is always valid (error() is |
2859 | called for errors); else, return NULL on error. */ | |
c906108c SS |
2860 | |
2861 | static struct target_ops * | |
fba45db2 | 2862 | find_default_run_target (char *do_mesg) |
c906108c SS |
2863 | { |
2864 | struct target_ops **t; | |
2865 | struct target_ops *runable = NULL; | |
2866 | int count; | |
2867 | ||
2868 | count = 0; | |
2869 | ||
2870 | for (t = target_structs; t < target_structs + target_struct_size; | |
2871 | ++t) | |
2872 | { | |
c5aa993b | 2873 | if ((*t)->to_can_run && target_can_run (*t)) |
c906108c SS |
2874 | { |
2875 | runable = *t; | |
2876 | ++count; | |
2877 | } | |
2878 | } | |
2879 | ||
2880 | if (count != 1) | |
5f667f2d PA |
2881 | { |
2882 | if (do_mesg) | |
2883 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
2884 | else | |
2885 | return NULL; | |
2886 | } | |
c906108c SS |
2887 | |
2888 | return runable; | |
2889 | } | |
2890 | ||
2891 | void | |
136d6dae | 2892 | find_default_attach (struct target_ops *ops, char *args, int from_tty) |
c906108c SS |
2893 | { |
2894 | struct target_ops *t; | |
2895 | ||
c5aa993b | 2896 | t = find_default_run_target ("attach"); |
136d6dae | 2897 | (t->to_attach) (t, args, from_tty); |
c906108c SS |
2898 | return; |
2899 | } | |
2900 | ||
c906108c | 2901 | void |
136d6dae VP |
2902 | find_default_create_inferior (struct target_ops *ops, |
2903 | char *exec_file, char *allargs, char **env, | |
c27cda74 | 2904 | int from_tty) |
c906108c SS |
2905 | { |
2906 | struct target_ops *t; | |
2907 | ||
c5aa993b | 2908 | t = find_default_run_target ("run"); |
136d6dae | 2909 | (t->to_create_inferior) (t, exec_file, allargs, env, from_tty); |
c906108c SS |
2910 | return; |
2911 | } | |
2912 | ||
2c0b251b | 2913 | static int |
b84876c2 PA |
2914 | find_default_can_async_p (void) |
2915 | { | |
2916 | struct target_ops *t; | |
2917 | ||
5f667f2d PA |
2918 | /* This may be called before the target is pushed on the stack; |
2919 | look for the default process stratum. If there's none, gdb isn't | |
2920 | configured with a native debugger, and target remote isn't | |
2921 | connected yet. */ | |
2922 | t = find_default_run_target (NULL); | |
2923 | if (t && t->to_can_async_p) | |
b84876c2 PA |
2924 | return (t->to_can_async_p) (); |
2925 | return 0; | |
2926 | } | |
2927 | ||
2c0b251b | 2928 | static int |
b84876c2 PA |
2929 | find_default_is_async_p (void) |
2930 | { | |
2931 | struct target_ops *t; | |
2932 | ||
5f667f2d PA |
2933 | /* This may be called before the target is pushed on the stack; |
2934 | look for the default process stratum. If there's none, gdb isn't | |
2935 | configured with a native debugger, and target remote isn't | |
2936 | connected yet. */ | |
2937 | t = find_default_run_target (NULL); | |
2938 | if (t && t->to_is_async_p) | |
b84876c2 PA |
2939 | return (t->to_is_async_p) (); |
2940 | return 0; | |
2941 | } | |
2942 | ||
2c0b251b | 2943 | static int |
9908b566 VP |
2944 | find_default_supports_non_stop (void) |
2945 | { | |
2946 | struct target_ops *t; | |
2947 | ||
2948 | t = find_default_run_target (NULL); | |
2949 | if (t && t->to_supports_non_stop) | |
2950 | return (t->to_supports_non_stop) (); | |
2951 | return 0; | |
2952 | } | |
2953 | ||
2954 | int | |
2c0b251b | 2955 | target_supports_non_stop (void) |
9908b566 VP |
2956 | { |
2957 | struct target_ops *t; | |
5d502164 | 2958 | |
9908b566 VP |
2959 | for (t = ¤t_target; t != NULL; t = t->beneath) |
2960 | if (t->to_supports_non_stop) | |
2961 | return t->to_supports_non_stop (); | |
2962 | ||
2963 | return 0; | |
2964 | } | |
2965 | ||
2966 | ||
07e059b5 VP |
2967 | char * |
2968 | target_get_osdata (const char *type) | |
2969 | { | |
07e059b5 VP |
2970 | struct target_ops *t; |
2971 | ||
739ef7fb PA |
2972 | /* If we're already connected to something that can get us OS |
2973 | related data, use it. Otherwise, try using the native | |
2974 | target. */ | |
2975 | if (current_target.to_stratum >= process_stratum) | |
6d097e65 | 2976 | t = current_target.beneath; |
739ef7fb PA |
2977 | else |
2978 | t = find_default_run_target ("get OS data"); | |
07e059b5 VP |
2979 | |
2980 | if (!t) | |
2981 | return NULL; | |
2982 | ||
6d097e65 | 2983 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
2984 | } |
2985 | ||
6c95b8df PA |
2986 | /* Determine the current address space of thread PTID. */ |
2987 | ||
2988 | struct address_space * | |
2989 | target_thread_address_space (ptid_t ptid) | |
2990 | { | |
c0694254 | 2991 | struct address_space *aspace; |
6c95b8df | 2992 | struct inferior *inf; |
c0694254 PA |
2993 | struct target_ops *t; |
2994 | ||
2995 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2996 | { | |
2997 | if (t->to_thread_address_space != NULL) | |
2998 | { | |
2999 | aspace = t->to_thread_address_space (t, ptid); | |
3000 | gdb_assert (aspace); | |
6c95b8df | 3001 | |
c0694254 PA |
3002 | if (targetdebug) |
3003 | fprintf_unfiltered (gdb_stdlog, | |
3004 | "target_thread_address_space (%s) = %d\n", | |
3005 | target_pid_to_str (ptid), | |
3006 | address_space_num (aspace)); | |
3007 | return aspace; | |
3008 | } | |
3009 | } | |
6c95b8df PA |
3010 | |
3011 | /* Fall-back to the "main" address space of the inferior. */ | |
3012 | inf = find_inferior_pid (ptid_get_pid (ptid)); | |
3013 | ||
3014 | if (inf == NULL || inf->aspace == NULL) | |
3e43a32a | 3015 | internal_error (__FILE__, __LINE__, |
9b20d036 MS |
3016 | _("Can't determine the current " |
3017 | "address space of thread %s\n"), | |
6c95b8df PA |
3018 | target_pid_to_str (ptid)); |
3019 | ||
3020 | return inf->aspace; | |
3021 | } | |
3022 | ||
e0d24f8d WZ |
3023 | static int |
3024 | default_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
3025 | { | |
ffe5a37e | 3026 | return (len <= gdbarch_ptr_bit (target_gdbarch) / TARGET_CHAR_BIT); |
ccaa32c7 GS |
3027 | } |
3028 | ||
5009afc5 AS |
3029 | static int |
3030 | default_watchpoint_addr_within_range (struct target_ops *target, | |
3031 | CORE_ADDR addr, | |
3032 | CORE_ADDR start, int length) | |
3033 | { | |
3034 | return addr >= start && addr < start + length; | |
3035 | } | |
3036 | ||
c2250ad1 UW |
3037 | static struct gdbarch * |
3038 | default_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
3039 | { | |
3040 | return target_gdbarch; | |
3041 | } | |
3042 | ||
c906108c | 3043 | static int |
fba45db2 | 3044 | return_zero (void) |
c906108c SS |
3045 | { |
3046 | return 0; | |
3047 | } | |
3048 | ||
3049 | static int | |
fba45db2 | 3050 | return_one (void) |
c906108c SS |
3051 | { |
3052 | return 1; | |
3053 | } | |
3054 | ||
ccaa32c7 GS |
3055 | static int |
3056 | return_minus_one (void) | |
3057 | { | |
3058 | return -1; | |
3059 | } | |
3060 | ||
7a292a7a SS |
3061 | /* Find a single runnable target in the stack and return it. If for |
3062 | some reason there is more than one, return NULL. */ | |
3063 | ||
3064 | struct target_ops * | |
fba45db2 | 3065 | find_run_target (void) |
7a292a7a SS |
3066 | { |
3067 | struct target_ops **t; | |
3068 | struct target_ops *runable = NULL; | |
3069 | int count; | |
c5aa993b | 3070 | |
7a292a7a | 3071 | count = 0; |
c5aa993b | 3072 | |
7a292a7a SS |
3073 | for (t = target_structs; t < target_structs + target_struct_size; ++t) |
3074 | { | |
c5aa993b | 3075 | if ((*t)->to_can_run && target_can_run (*t)) |
7a292a7a SS |
3076 | { |
3077 | runable = *t; | |
3078 | ++count; | |
3079 | } | |
3080 | } | |
c5aa993b | 3081 | |
7a292a7a SS |
3082 | return (count == 1 ? runable : NULL); |
3083 | } | |
3084 | ||
ed9a39eb JM |
3085 | /* |
3086 | * Find the next target down the stack from the specified target. | |
3087 | */ | |
3088 | ||
3089 | struct target_ops * | |
fba45db2 | 3090 | find_target_beneath (struct target_ops *t) |
ed9a39eb | 3091 | { |
258b763a | 3092 | return t->beneath; |
ed9a39eb JM |
3093 | } |
3094 | ||
c906108c SS |
3095 | \f |
3096 | /* The inferior process has died. Long live the inferior! */ | |
3097 | ||
3098 | void | |
fba45db2 | 3099 | generic_mourn_inferior (void) |
c906108c | 3100 | { |
7f9f62ba | 3101 | ptid_t ptid; |
c906108c | 3102 | |
7f9f62ba | 3103 | ptid = inferior_ptid; |
39f77062 | 3104 | inferior_ptid = null_ptid; |
7f9f62ba PA |
3105 | |
3106 | if (!ptid_equal (ptid, null_ptid)) | |
3107 | { | |
3108 | int pid = ptid_get_pid (ptid); | |
6c95b8df | 3109 | exit_inferior (pid); |
7f9f62ba PA |
3110 | } |
3111 | ||
c906108c SS |
3112 | breakpoint_init_inferior (inf_exited); |
3113 | registers_changed (); | |
3114 | ||
c906108c SS |
3115 | reopen_exec_file (); |
3116 | reinit_frame_cache (); | |
3117 | ||
9a4105ab AC |
3118 | if (deprecated_detach_hook) |
3119 | deprecated_detach_hook (); | |
c906108c SS |
3120 | } |
3121 | \f | |
8807d78b | 3122 | /* Helper function for child_wait and the derivatives of child_wait. |
c906108c SS |
3123 | HOSTSTATUS is the waitstatus from wait() or the equivalent; store our |
3124 | translation of that in OURSTATUS. */ | |
3125 | void | |
fba45db2 | 3126 | store_waitstatus (struct target_waitstatus *ourstatus, int hoststatus) |
c906108c | 3127 | { |
c906108c SS |
3128 | if (WIFEXITED (hoststatus)) |
3129 | { | |
3130 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
3131 | ourstatus->value.integer = WEXITSTATUS (hoststatus); | |
3132 | } | |
3133 | else if (!WIFSTOPPED (hoststatus)) | |
3134 | { | |
3135 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
3136 | ourstatus->value.sig = target_signal_from_host (WTERMSIG (hoststatus)); | |
3137 | } | |
3138 | else | |
3139 | { | |
3140 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
3141 | ourstatus->value.sig = target_signal_from_host (WSTOPSIG (hoststatus)); | |
3142 | } | |
3143 | } | |
3144 | \f | |
fd0a2a6f MK |
3145 | /* Convert a normal process ID to a string. Returns the string in a |
3146 | static buffer. */ | |
c906108c SS |
3147 | |
3148 | char * | |
39f77062 | 3149 | normal_pid_to_str (ptid_t ptid) |
c906108c | 3150 | { |
fd0a2a6f | 3151 | static char buf[32]; |
c906108c | 3152 | |
5fff8fc0 | 3153 | xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid)); |
c906108c SS |
3154 | return buf; |
3155 | } | |
3156 | ||
2c0b251b | 3157 | static char * |
117de6a9 PA |
3158 | dummy_pid_to_str (struct target_ops *ops, ptid_t ptid) |
3159 | { | |
3160 | return normal_pid_to_str (ptid); | |
3161 | } | |
3162 | ||
9b4eba8e HZ |
3163 | /* Error-catcher for target_find_memory_regions. */ |
3164 | static int | |
b8edc417 | 3165 | dummy_find_memory_regions (find_memory_region_ftype ignore1, void *ignore2) |
be4d1333 | 3166 | { |
9b4eba8e | 3167 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3168 | return 0; |
3169 | } | |
3170 | ||
9b4eba8e HZ |
3171 | /* Error-catcher for target_make_corefile_notes. */ |
3172 | static char * | |
3173 | dummy_make_corefile_notes (bfd *ignore1, int *ignore2) | |
be4d1333 | 3174 | { |
9b4eba8e | 3175 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3176 | return NULL; |
3177 | } | |
3178 | ||
6b04bdb7 MS |
3179 | /* Error-catcher for target_get_bookmark. */ |
3180 | static gdb_byte * | |
3181 | dummy_get_bookmark (char *ignore1, int ignore2) | |
3182 | { | |
3183 | tcomplain (); | |
3184 | return NULL; | |
3185 | } | |
3186 | ||
3187 | /* Error-catcher for target_goto_bookmark. */ | |
3188 | static void | |
3189 | dummy_goto_bookmark (gdb_byte *ignore, int from_tty) | |
3190 | { | |
3191 | tcomplain (); | |
3192 | } | |
3193 | ||
c906108c SS |
3194 | /* Set up the handful of non-empty slots needed by the dummy target |
3195 | vector. */ | |
3196 | ||
3197 | static void | |
fba45db2 | 3198 | init_dummy_target (void) |
c906108c SS |
3199 | { |
3200 | dummy_target.to_shortname = "None"; | |
3201 | dummy_target.to_longname = "None"; | |
3202 | dummy_target.to_doc = ""; | |
3203 | dummy_target.to_attach = find_default_attach; | |
136d6dae VP |
3204 | dummy_target.to_detach = |
3205 | (void (*)(struct target_ops *, char *, int))target_ignore; | |
c906108c | 3206 | dummy_target.to_create_inferior = find_default_create_inferior; |
b84876c2 PA |
3207 | dummy_target.to_can_async_p = find_default_can_async_p; |
3208 | dummy_target.to_is_async_p = find_default_is_async_p; | |
9908b566 | 3209 | dummy_target.to_supports_non_stop = find_default_supports_non_stop; |
117de6a9 | 3210 | dummy_target.to_pid_to_str = dummy_pid_to_str; |
c906108c | 3211 | dummy_target.to_stratum = dummy_stratum; |
be4d1333 MS |
3212 | dummy_target.to_find_memory_regions = dummy_find_memory_regions; |
3213 | dummy_target.to_make_corefile_notes = dummy_make_corefile_notes; | |
6b04bdb7 MS |
3214 | dummy_target.to_get_bookmark = dummy_get_bookmark; |
3215 | dummy_target.to_goto_bookmark = dummy_goto_bookmark; | |
0b603eba | 3216 | dummy_target.to_xfer_partial = default_xfer_partial; |
c35b1492 PA |
3217 | dummy_target.to_has_all_memory = (int (*) (struct target_ops *)) return_zero; |
3218 | dummy_target.to_has_memory = (int (*) (struct target_ops *)) return_zero; | |
3219 | dummy_target.to_has_stack = (int (*) (struct target_ops *)) return_zero; | |
3220 | dummy_target.to_has_registers = (int (*) (struct target_ops *)) return_zero; | |
3221 | dummy_target.to_has_execution = (int (*) (struct target_ops *)) return_zero; | |
7155de5a HZ |
3222 | dummy_target.to_stopped_by_watchpoint = return_zero; |
3223 | dummy_target.to_stopped_data_address = | |
3224 | (int (*) (struct target_ops *, CORE_ADDR *)) return_zero; | |
c906108c SS |
3225 | dummy_target.to_magic = OPS_MAGIC; |
3226 | } | |
c906108c | 3227 | \f |
c906108c | 3228 | static void |
fba45db2 | 3229 | debug_to_open (char *args, int from_tty) |
c906108c SS |
3230 | { |
3231 | debug_target.to_open (args, from_tty); | |
3232 | ||
96baa820 | 3233 | fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty); |
c906108c SS |
3234 | } |
3235 | ||
f1c07ab0 AC |
3236 | void |
3237 | target_close (struct target_ops *targ, int quitting) | |
3238 | { | |
3239 | if (targ->to_xclose != NULL) | |
3240 | targ->to_xclose (targ, quitting); | |
3241 | else if (targ->to_close != NULL) | |
3242 | targ->to_close (quitting); | |
947b8855 PA |
3243 | |
3244 | if (targetdebug) | |
3245 | fprintf_unfiltered (gdb_stdlog, "target_close (%d)\n", quitting); | |
f1c07ab0 AC |
3246 | } |
3247 | ||
136d6dae VP |
3248 | void |
3249 | target_attach (char *args, int from_tty) | |
3250 | { | |
3251 | struct target_ops *t; | |
5d502164 | 3252 | |
136d6dae VP |
3253 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3254 | { | |
3255 | if (t->to_attach != NULL) | |
3256 | { | |
3257 | t->to_attach (t, args, from_tty); | |
947b8855 PA |
3258 | if (targetdebug) |
3259 | fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n", | |
3260 | args, from_tty); | |
136d6dae VP |
3261 | return; |
3262 | } | |
3263 | } | |
3264 | ||
3265 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 3266 | _("could not find a target to attach")); |
136d6dae VP |
3267 | } |
3268 | ||
28439f5e PA |
3269 | int |
3270 | target_thread_alive (ptid_t ptid) | |
c906108c | 3271 | { |
28439f5e | 3272 | struct target_ops *t; |
5d502164 | 3273 | |
28439f5e PA |
3274 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3275 | { | |
3276 | if (t->to_thread_alive != NULL) | |
3277 | { | |
3278 | int retval; | |
c906108c | 3279 | |
28439f5e PA |
3280 | retval = t->to_thread_alive (t, ptid); |
3281 | if (targetdebug) | |
3282 | fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n", | |
3283 | PIDGET (ptid), retval); | |
3284 | ||
3285 | return retval; | |
3286 | } | |
3287 | } | |
3288 | ||
3289 | return 0; | |
3290 | } | |
3291 | ||
3292 | void | |
3293 | target_find_new_threads (void) | |
3294 | { | |
3295 | struct target_ops *t; | |
5d502164 | 3296 | |
28439f5e PA |
3297 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3298 | { | |
3299 | if (t->to_find_new_threads != NULL) | |
3300 | { | |
3301 | t->to_find_new_threads (t); | |
3302 | if (targetdebug) | |
3303 | fprintf_unfiltered (gdb_stdlog, "target_find_new_threads ()\n"); | |
3304 | ||
3305 | return; | |
3306 | } | |
3307 | } | |
c906108c SS |
3308 | } |
3309 | ||
d914c394 SS |
3310 | void |
3311 | target_stop (ptid_t ptid) | |
3312 | { | |
3313 | if (!may_stop) | |
3314 | { | |
3315 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3316 | return; | |
3317 | } | |
3318 | ||
3319 | (*current_target.to_stop) (ptid); | |
3320 | } | |
3321 | ||
c906108c | 3322 | static void |
28439f5e | 3323 | debug_to_post_attach (int pid) |
c906108c | 3324 | { |
28439f5e | 3325 | debug_target.to_post_attach (pid); |
c906108c | 3326 | |
28439f5e | 3327 | fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid); |
c906108c SS |
3328 | } |
3329 | ||
f00150c9 DE |
3330 | /* Return a pretty printed form of target_waitstatus. |
3331 | Space for the result is malloc'd, caller must free. */ | |
c906108c | 3332 | |
f00150c9 DE |
3333 | char * |
3334 | target_waitstatus_to_string (const struct target_waitstatus *ws) | |
3335 | { | |
3336 | const char *kind_str = "status->kind = "; | |
c906108c | 3337 | |
f00150c9 | 3338 | switch (ws->kind) |
c906108c SS |
3339 | { |
3340 | case TARGET_WAITKIND_EXITED: | |
f00150c9 DE |
3341 | return xstrprintf ("%sexited, status = %d", |
3342 | kind_str, ws->value.integer); | |
c906108c | 3343 | case TARGET_WAITKIND_STOPPED: |
f00150c9 DE |
3344 | return xstrprintf ("%sstopped, signal = %s", |
3345 | kind_str, target_signal_to_name (ws->value.sig)); | |
c906108c | 3346 | case TARGET_WAITKIND_SIGNALLED: |
f00150c9 DE |
3347 | return xstrprintf ("%ssignalled, signal = %s", |
3348 | kind_str, target_signal_to_name (ws->value.sig)); | |
c906108c | 3349 | case TARGET_WAITKIND_LOADED: |
f00150c9 | 3350 | return xstrprintf ("%sloaded", kind_str); |
c906108c | 3351 | case TARGET_WAITKIND_FORKED: |
f00150c9 | 3352 | return xstrprintf ("%sforked", kind_str); |
c906108c | 3353 | case TARGET_WAITKIND_VFORKED: |
f00150c9 | 3354 | return xstrprintf ("%svforked", kind_str); |
c906108c | 3355 | case TARGET_WAITKIND_EXECD: |
f00150c9 DE |
3356 | return xstrprintf ("%sexecd", kind_str); |
3357 | case TARGET_WAITKIND_SYSCALL_ENTRY: | |
a96d9b2e | 3358 | return xstrprintf ("%sentered syscall", kind_str); |
f00150c9 | 3359 | case TARGET_WAITKIND_SYSCALL_RETURN: |
a96d9b2e | 3360 | return xstrprintf ("%sexited syscall", kind_str); |
c906108c | 3361 | case TARGET_WAITKIND_SPURIOUS: |
f00150c9 DE |
3362 | return xstrprintf ("%sspurious", kind_str); |
3363 | case TARGET_WAITKIND_IGNORE: | |
3364 | return xstrprintf ("%signore", kind_str); | |
3365 | case TARGET_WAITKIND_NO_HISTORY: | |
3366 | return xstrprintf ("%sno-history", kind_str); | |
c906108c | 3367 | default: |
f00150c9 | 3368 | return xstrprintf ("%sunknown???", kind_str); |
c906108c | 3369 | } |
f00150c9 DE |
3370 | } |
3371 | ||
bf0c5130 | 3372 | static void |
56be3814 UW |
3373 | debug_print_register (const char * func, |
3374 | struct regcache *regcache, int regno) | |
bf0c5130 | 3375 | { |
f8d29908 | 3376 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
5d502164 | 3377 | |
bf0c5130 | 3378 | fprintf_unfiltered (gdb_stdlog, "%s ", func); |
f8d29908 | 3379 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) |
f8d29908 UW |
3380 | && gdbarch_register_name (gdbarch, regno) != NULL |
3381 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') | |
3382 | fprintf_unfiltered (gdb_stdlog, "(%s)", | |
3383 | gdbarch_register_name (gdbarch, regno)); | |
bf0c5130 AC |
3384 | else |
3385 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
0ff58721 | 3386 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) |
bf0c5130 | 3387 | { |
e17a4113 | 3388 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
f8d29908 | 3389 | int i, size = register_size (gdbarch, regno); |
d9d9c31f | 3390 | unsigned char buf[MAX_REGISTER_SIZE]; |
5d502164 | 3391 | |
0ff58721 | 3392 | regcache_raw_collect (regcache, regno, buf); |
bf0c5130 | 3393 | fprintf_unfiltered (gdb_stdlog, " = "); |
81c4a259 | 3394 | for (i = 0; i < size; i++) |
bf0c5130 AC |
3395 | { |
3396 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
3397 | } | |
81c4a259 | 3398 | if (size <= sizeof (LONGEST)) |
bf0c5130 | 3399 | { |
e17a4113 | 3400 | ULONGEST val = extract_unsigned_integer (buf, size, byte_order); |
5d502164 | 3401 | |
0b1553bc UW |
3402 | fprintf_unfiltered (gdb_stdlog, " %s %s", |
3403 | core_addr_to_string_nz (val), plongest (val)); | |
bf0c5130 AC |
3404 | } |
3405 | } | |
3406 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
3407 | } | |
3408 | ||
28439f5e PA |
3409 | void |
3410 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 3411 | { |
28439f5e | 3412 | struct target_ops *t; |
5d502164 | 3413 | |
28439f5e PA |
3414 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3415 | { | |
3416 | if (t->to_fetch_registers != NULL) | |
3417 | { | |
3418 | t->to_fetch_registers (t, regcache, regno); | |
3419 | if (targetdebug) | |
3420 | debug_print_register ("target_fetch_registers", regcache, regno); | |
3421 | return; | |
3422 | } | |
3423 | } | |
c906108c SS |
3424 | } |
3425 | ||
28439f5e PA |
3426 | void |
3427 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 3428 | { |
28439f5e | 3429 | struct target_ops *t; |
5d502164 | 3430 | |
d914c394 SS |
3431 | if (!may_write_registers) |
3432 | error (_("Writing to registers is not allowed (regno %d)"), regno); | |
3433 | ||
28439f5e PA |
3434 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3435 | { | |
3436 | if (t->to_store_registers != NULL) | |
3437 | { | |
3438 | t->to_store_registers (t, regcache, regno); | |
3439 | if (targetdebug) | |
3440 | { | |
3441 | debug_print_register ("target_store_registers", regcache, regno); | |
3442 | } | |
3443 | return; | |
3444 | } | |
3445 | } | |
3446 | ||
3447 | noprocess (); | |
c906108c SS |
3448 | } |
3449 | ||
dc146f7c VP |
3450 | int |
3451 | target_core_of_thread (ptid_t ptid) | |
3452 | { | |
3453 | struct target_ops *t; | |
3454 | ||
3455 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3456 | { | |
3457 | if (t->to_core_of_thread != NULL) | |
3458 | { | |
3459 | int retval = t->to_core_of_thread (t, ptid); | |
5d502164 | 3460 | |
dc146f7c | 3461 | if (targetdebug) |
3e43a32a MS |
3462 | fprintf_unfiltered (gdb_stdlog, |
3463 | "target_core_of_thread (%d) = %d\n", | |
dc146f7c VP |
3464 | PIDGET (ptid), retval); |
3465 | return retval; | |
3466 | } | |
3467 | } | |
3468 | ||
3469 | return -1; | |
3470 | } | |
3471 | ||
4a5e7a5b PA |
3472 | int |
3473 | target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3474 | { | |
3475 | struct target_ops *t; | |
3476 | ||
3477 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3478 | { | |
3479 | if (t->to_verify_memory != NULL) | |
3480 | { | |
3481 | int retval = t->to_verify_memory (t, data, memaddr, size); | |
5d502164 | 3482 | |
4a5e7a5b | 3483 | if (targetdebug) |
3e43a32a MS |
3484 | fprintf_unfiltered (gdb_stdlog, |
3485 | "target_verify_memory (%s, %s) = %d\n", | |
4a5e7a5b PA |
3486 | paddress (target_gdbarch, memaddr), |
3487 | pulongest (size), | |
3488 | retval); | |
3489 | return retval; | |
3490 | } | |
3491 | } | |
3492 | ||
3493 | tcomplain (); | |
3494 | } | |
3495 | ||
c906108c | 3496 | static void |
316f2060 | 3497 | debug_to_prepare_to_store (struct regcache *regcache) |
c906108c | 3498 | { |
316f2060 | 3499 | debug_target.to_prepare_to_store (regcache); |
c906108c | 3500 | |
96baa820 | 3501 | fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n"); |
c906108c SS |
3502 | } |
3503 | ||
3504 | static int | |
961cb7b5 | 3505 | deprecated_debug_xfer_memory (CORE_ADDR memaddr, bfd_byte *myaddr, int len, |
c8e73a31 AC |
3506 | int write, struct mem_attrib *attrib, |
3507 | struct target_ops *target) | |
c906108c SS |
3508 | { |
3509 | int retval; | |
3510 | ||
c8e73a31 AC |
3511 | retval = debug_target.deprecated_xfer_memory (memaddr, myaddr, len, write, |
3512 | attrib, target); | |
c906108c | 3513 | |
96baa820 | 3514 | fprintf_unfiltered (gdb_stdlog, |
53b71562 | 3515 | "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d", |
5af949e3 UW |
3516 | paddress (target_gdbarch, memaddr), len, |
3517 | write ? "write" : "read", retval); | |
c906108c | 3518 | |
c906108c SS |
3519 | if (retval > 0) |
3520 | { | |
3521 | int i; | |
3522 | ||
96baa820 | 3523 | fputs_unfiltered (", bytes =", gdb_stdlog); |
c906108c SS |
3524 | for (i = 0; i < retval; i++) |
3525 | { | |
53b71562 | 3526 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
333dabeb DJ |
3527 | { |
3528 | if (targetdebug < 2 && i > 0) | |
3529 | { | |
3530 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
3531 | break; | |
3532 | } | |
3533 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
3534 | } | |
2bc416ba | 3535 | |
96baa820 | 3536 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
c906108c SS |
3537 | } |
3538 | } | |
3539 | ||
96baa820 | 3540 | fputc_unfiltered ('\n', gdb_stdlog); |
c906108c SS |
3541 | |
3542 | return retval; | |
3543 | } | |
3544 | ||
3545 | static void | |
fba45db2 | 3546 | debug_to_files_info (struct target_ops *target) |
c906108c SS |
3547 | { |
3548 | debug_target.to_files_info (target); | |
3549 | ||
96baa820 | 3550 | fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n"); |
c906108c SS |
3551 | } |
3552 | ||
3553 | static int | |
a6d9a66e UW |
3554 | debug_to_insert_breakpoint (struct gdbarch *gdbarch, |
3555 | struct bp_target_info *bp_tgt) | |
c906108c SS |
3556 | { |
3557 | int retval; | |
3558 | ||
a6d9a66e | 3559 | retval = debug_target.to_insert_breakpoint (gdbarch, bp_tgt); |
c906108c | 3560 | |
96baa820 | 3561 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
3562 | "target_insert_breakpoint (%s, xxx) = %ld\n", |
3563 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 3564 | (unsigned long) retval); |
c906108c SS |
3565 | return retval; |
3566 | } | |
3567 | ||
3568 | static int | |
a6d9a66e UW |
3569 | debug_to_remove_breakpoint (struct gdbarch *gdbarch, |
3570 | struct bp_target_info *bp_tgt) | |
c906108c SS |
3571 | { |
3572 | int retval; | |
3573 | ||
a6d9a66e | 3574 | retval = debug_target.to_remove_breakpoint (gdbarch, bp_tgt); |
c906108c | 3575 | |
96baa820 | 3576 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
3577 | "target_remove_breakpoint (%s, xxx) = %ld\n", |
3578 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 3579 | (unsigned long) retval); |
c906108c SS |
3580 | return retval; |
3581 | } | |
3582 | ||
ccaa32c7 GS |
3583 | static int |
3584 | debug_to_can_use_hw_breakpoint (int type, int cnt, int from_tty) | |
3585 | { | |
3586 | int retval; | |
3587 | ||
3588 | retval = debug_target.to_can_use_hw_breakpoint (type, cnt, from_tty); | |
3589 | ||
3590 | fprintf_unfiltered (gdb_stdlog, | |
3591 | "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n", | |
3592 | (unsigned long) type, | |
3593 | (unsigned long) cnt, | |
3594 | (unsigned long) from_tty, | |
3595 | (unsigned long) retval); | |
3596 | return retval; | |
3597 | } | |
3598 | ||
e0d24f8d WZ |
3599 | static int |
3600 | debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
3601 | { | |
3602 | CORE_ADDR retval; | |
3603 | ||
3604 | retval = debug_target.to_region_ok_for_hw_watchpoint (addr, len); | |
3605 | ||
3606 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3607 | "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n", |
3608 | core_addr_to_string (addr), (unsigned long) len, | |
3609 | core_addr_to_string (retval)); | |
e0d24f8d WZ |
3610 | return retval; |
3611 | } | |
3612 | ||
0cf6dd15 TJB |
3613 | static int |
3614 | debug_to_can_accel_watchpoint_condition (CORE_ADDR addr, int len, int rw, | |
3615 | struct expression *cond) | |
3616 | { | |
3617 | int retval; | |
3618 | ||
3e43a32a MS |
3619 | retval = debug_target.to_can_accel_watchpoint_condition (addr, len, |
3620 | rw, cond); | |
0cf6dd15 TJB |
3621 | |
3622 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
3623 | "target_can_accel_watchpoint_condition " |
3624 | "(%s, %d, %d, %s) = %ld\n", | |
bd91e7ae OS |
3625 | core_addr_to_string (addr), len, rw, |
3626 | host_address_to_string (cond), (unsigned long) retval); | |
0cf6dd15 TJB |
3627 | return retval; |
3628 | } | |
3629 | ||
ccaa32c7 GS |
3630 | static int |
3631 | debug_to_stopped_by_watchpoint (void) | |
3632 | { | |
3633 | int retval; | |
3634 | ||
3635 | retval = debug_target.to_stopped_by_watchpoint (); | |
3636 | ||
3637 | fprintf_unfiltered (gdb_stdlog, | |
d92524f1 | 3638 | "target_stopped_by_watchpoint () = %ld\n", |
ccaa32c7 GS |
3639 | (unsigned long) retval); |
3640 | return retval; | |
3641 | } | |
3642 | ||
4aa7a7f5 JJ |
3643 | static int |
3644 | debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr) | |
ccaa32c7 | 3645 | { |
4aa7a7f5 | 3646 | int retval; |
ccaa32c7 | 3647 | |
4aa7a7f5 | 3648 | retval = debug_target.to_stopped_data_address (target, addr); |
ccaa32c7 GS |
3649 | |
3650 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3651 | "target_stopped_data_address ([%s]) = %ld\n", |
3652 | core_addr_to_string (*addr), | |
4aa7a7f5 | 3653 | (unsigned long)retval); |
ccaa32c7 GS |
3654 | return retval; |
3655 | } | |
3656 | ||
5009afc5 AS |
3657 | static int |
3658 | debug_to_watchpoint_addr_within_range (struct target_ops *target, | |
3659 | CORE_ADDR addr, | |
3660 | CORE_ADDR start, int length) | |
3661 | { | |
3662 | int retval; | |
3663 | ||
3664 | retval = debug_target.to_watchpoint_addr_within_range (target, addr, | |
3665 | start, length); | |
3666 | ||
3667 | fprintf_filtered (gdb_stdlog, | |
bd91e7ae OS |
3668 | "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n", |
3669 | core_addr_to_string (addr), core_addr_to_string (start), | |
3670 | length, retval); | |
5009afc5 AS |
3671 | return retval; |
3672 | } | |
3673 | ||
ccaa32c7 | 3674 | static int |
a6d9a66e UW |
3675 | debug_to_insert_hw_breakpoint (struct gdbarch *gdbarch, |
3676 | struct bp_target_info *bp_tgt) | |
ccaa32c7 GS |
3677 | { |
3678 | int retval; | |
3679 | ||
a6d9a66e | 3680 | retval = debug_target.to_insert_hw_breakpoint (gdbarch, bp_tgt); |
ccaa32c7 GS |
3681 | |
3682 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3683 | "target_insert_hw_breakpoint (%s, xxx) = %ld\n", |
3684 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
3685 | (unsigned long) retval); |
3686 | return retval; | |
3687 | } | |
3688 | ||
3689 | static int | |
a6d9a66e UW |
3690 | debug_to_remove_hw_breakpoint (struct gdbarch *gdbarch, |
3691 | struct bp_target_info *bp_tgt) | |
ccaa32c7 GS |
3692 | { |
3693 | int retval; | |
3694 | ||
a6d9a66e | 3695 | retval = debug_target.to_remove_hw_breakpoint (gdbarch, bp_tgt); |
ccaa32c7 GS |
3696 | |
3697 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3698 | "target_remove_hw_breakpoint (%s, xxx) = %ld\n", |
3699 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
3700 | (unsigned long) retval); |
3701 | return retval; | |
3702 | } | |
3703 | ||
3704 | static int | |
0cf6dd15 TJB |
3705 | debug_to_insert_watchpoint (CORE_ADDR addr, int len, int type, |
3706 | struct expression *cond) | |
ccaa32c7 GS |
3707 | { |
3708 | int retval; | |
3709 | ||
0cf6dd15 | 3710 | retval = debug_target.to_insert_watchpoint (addr, len, type, cond); |
ccaa32c7 GS |
3711 | |
3712 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3713 | "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n", |
3714 | core_addr_to_string (addr), len, type, | |
3715 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
3716 | return retval; |
3717 | } | |
3718 | ||
3719 | static int | |
0cf6dd15 TJB |
3720 | debug_to_remove_watchpoint (CORE_ADDR addr, int len, int type, |
3721 | struct expression *cond) | |
ccaa32c7 GS |
3722 | { |
3723 | int retval; | |
3724 | ||
0cf6dd15 | 3725 | retval = debug_target.to_remove_watchpoint (addr, len, type, cond); |
ccaa32c7 GS |
3726 | |
3727 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3728 | "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n", |
3729 | core_addr_to_string (addr), len, type, | |
3730 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
3731 | return retval; |
3732 | } | |
3733 | ||
c906108c | 3734 | static void |
fba45db2 | 3735 | debug_to_terminal_init (void) |
c906108c SS |
3736 | { |
3737 | debug_target.to_terminal_init (); | |
3738 | ||
96baa820 | 3739 | fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n"); |
c906108c SS |
3740 | } |
3741 | ||
3742 | static void | |
fba45db2 | 3743 | debug_to_terminal_inferior (void) |
c906108c SS |
3744 | { |
3745 | debug_target.to_terminal_inferior (); | |
3746 | ||
96baa820 | 3747 | fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n"); |
c906108c SS |
3748 | } |
3749 | ||
3750 | static void | |
fba45db2 | 3751 | debug_to_terminal_ours_for_output (void) |
c906108c SS |
3752 | { |
3753 | debug_target.to_terminal_ours_for_output (); | |
3754 | ||
96baa820 | 3755 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n"); |
c906108c SS |
3756 | } |
3757 | ||
3758 | static void | |
fba45db2 | 3759 | debug_to_terminal_ours (void) |
c906108c SS |
3760 | { |
3761 | debug_target.to_terminal_ours (); | |
3762 | ||
96baa820 | 3763 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n"); |
c906108c SS |
3764 | } |
3765 | ||
a790ad35 SC |
3766 | static void |
3767 | debug_to_terminal_save_ours (void) | |
3768 | { | |
3769 | debug_target.to_terminal_save_ours (); | |
3770 | ||
3771 | fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n"); | |
3772 | } | |
3773 | ||
c906108c | 3774 | static void |
fba45db2 | 3775 | debug_to_terminal_info (char *arg, int from_tty) |
c906108c SS |
3776 | { |
3777 | debug_target.to_terminal_info (arg, from_tty); | |
3778 | ||
96baa820 | 3779 | fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg, |
c906108c SS |
3780 | from_tty); |
3781 | } | |
3782 | ||
c906108c | 3783 | static void |
fba45db2 | 3784 | debug_to_load (char *args, int from_tty) |
c906108c SS |
3785 | { |
3786 | debug_target.to_load (args, from_tty); | |
3787 | ||
96baa820 | 3788 | fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty); |
c906108c SS |
3789 | } |
3790 | ||
3791 | static int | |
fba45db2 | 3792 | debug_to_lookup_symbol (char *name, CORE_ADDR *addrp) |
c906108c SS |
3793 | { |
3794 | int retval; | |
3795 | ||
3796 | retval = debug_target.to_lookup_symbol (name, addrp); | |
3797 | ||
96baa820 | 3798 | fprintf_unfiltered (gdb_stdlog, "target_lookup_symbol (%s, xxx)\n", name); |
c906108c SS |
3799 | |
3800 | return retval; | |
3801 | } | |
3802 | ||
c906108c | 3803 | static void |
39f77062 | 3804 | debug_to_post_startup_inferior (ptid_t ptid) |
c906108c | 3805 | { |
39f77062 | 3806 | debug_target.to_post_startup_inferior (ptid); |
c906108c | 3807 | |
96baa820 | 3808 | fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n", |
39f77062 | 3809 | PIDGET (ptid)); |
c906108c SS |
3810 | } |
3811 | ||
77b06cd7 | 3812 | static int |
fba45db2 | 3813 | debug_to_insert_fork_catchpoint (int pid) |
c906108c | 3814 | { |
77b06cd7 TJB |
3815 | int retval; |
3816 | ||
3817 | retval = debug_target.to_insert_fork_catchpoint (pid); | |
3818 | ||
3819 | fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d) = %d\n", | |
3820 | pid, retval); | |
c906108c | 3821 | |
77b06cd7 | 3822 | return retval; |
c906108c SS |
3823 | } |
3824 | ||
3825 | static int | |
fba45db2 | 3826 | debug_to_remove_fork_catchpoint (int pid) |
c906108c | 3827 | { |
c5aa993b | 3828 | int retval; |
c906108c SS |
3829 | |
3830 | retval = debug_target.to_remove_fork_catchpoint (pid); | |
3831 | ||
96baa820 | 3832 | fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n", |
c5aa993b | 3833 | pid, retval); |
c906108c SS |
3834 | |
3835 | return retval; | |
3836 | } | |
3837 | ||
77b06cd7 | 3838 | static int |
fba45db2 | 3839 | debug_to_insert_vfork_catchpoint (int pid) |
c906108c | 3840 | { |
77b06cd7 TJB |
3841 | int retval; |
3842 | ||
3843 | retval = debug_target.to_insert_vfork_catchpoint (pid); | |
c906108c | 3844 | |
77b06cd7 TJB |
3845 | fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d) = %d\n", |
3846 | pid, retval); | |
3847 | ||
3848 | return retval; | |
c906108c SS |
3849 | } |
3850 | ||
3851 | static int | |
fba45db2 | 3852 | debug_to_remove_vfork_catchpoint (int pid) |
c906108c | 3853 | { |
c5aa993b | 3854 | int retval; |
c906108c SS |
3855 | |
3856 | retval = debug_target.to_remove_vfork_catchpoint (pid); | |
3857 | ||
96baa820 | 3858 | fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n", |
c5aa993b | 3859 | pid, retval); |
c906108c SS |
3860 | |
3861 | return retval; | |
3862 | } | |
3863 | ||
77b06cd7 | 3864 | static int |
fba45db2 | 3865 | debug_to_insert_exec_catchpoint (int pid) |
c906108c | 3866 | { |
77b06cd7 TJB |
3867 | int retval; |
3868 | ||
3869 | retval = debug_target.to_insert_exec_catchpoint (pid); | |
c906108c | 3870 | |
77b06cd7 TJB |
3871 | fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d) = %d\n", |
3872 | pid, retval); | |
3873 | ||
3874 | return retval; | |
c906108c SS |
3875 | } |
3876 | ||
3877 | static int | |
fba45db2 | 3878 | debug_to_remove_exec_catchpoint (int pid) |
c906108c | 3879 | { |
c5aa993b | 3880 | int retval; |
c906108c SS |
3881 | |
3882 | retval = debug_target.to_remove_exec_catchpoint (pid); | |
3883 | ||
96baa820 | 3884 | fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n", |
c5aa993b | 3885 | pid, retval); |
c906108c SS |
3886 | |
3887 | return retval; | |
3888 | } | |
3889 | ||
c906108c | 3890 | static int |
fba45db2 | 3891 | debug_to_has_exited (int pid, int wait_status, int *exit_status) |
c906108c | 3892 | { |
c5aa993b | 3893 | int has_exited; |
c906108c SS |
3894 | |
3895 | has_exited = debug_target.to_has_exited (pid, wait_status, exit_status); | |
3896 | ||
96baa820 | 3897 | fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n", |
c5aa993b | 3898 | pid, wait_status, *exit_status, has_exited); |
c906108c SS |
3899 | |
3900 | return has_exited; | |
3901 | } | |
3902 | ||
c906108c | 3903 | static int |
fba45db2 | 3904 | debug_to_can_run (void) |
c906108c SS |
3905 | { |
3906 | int retval; | |
3907 | ||
3908 | retval = debug_target.to_can_run (); | |
3909 | ||
96baa820 | 3910 | fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval); |
c906108c SS |
3911 | |
3912 | return retval; | |
3913 | } | |
3914 | ||
3915 | static void | |
39f77062 | 3916 | debug_to_notice_signals (ptid_t ptid) |
c906108c | 3917 | { |
39f77062 | 3918 | debug_target.to_notice_signals (ptid); |
c906108c | 3919 | |
39f77062 KB |
3920 | fprintf_unfiltered (gdb_stdlog, "target_notice_signals (%d)\n", |
3921 | PIDGET (ptid)); | |
c906108c SS |
3922 | } |
3923 | ||
c2250ad1 UW |
3924 | static struct gdbarch * |
3925 | debug_to_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
3926 | { | |
3927 | struct gdbarch *retval; | |
3928 | ||
3929 | retval = debug_target.to_thread_architecture (ops, ptid); | |
3930 | ||
3e43a32a MS |
3931 | fprintf_unfiltered (gdb_stdlog, |
3932 | "target_thread_architecture (%s) = %s [%s]\n", | |
3933 | target_pid_to_str (ptid), | |
3934 | host_address_to_string (retval), | |
c2250ad1 UW |
3935 | gdbarch_bfd_arch_info (retval)->printable_name); |
3936 | return retval; | |
3937 | } | |
3938 | ||
c906108c | 3939 | static void |
94cc34af | 3940 | debug_to_stop (ptid_t ptid) |
c906108c | 3941 | { |
94cc34af | 3942 | debug_target.to_stop (ptid); |
c906108c | 3943 | |
94cc34af PA |
3944 | fprintf_unfiltered (gdb_stdlog, "target_stop (%s)\n", |
3945 | target_pid_to_str (ptid)); | |
c906108c SS |
3946 | } |
3947 | ||
96baa820 JM |
3948 | static void |
3949 | debug_to_rcmd (char *command, | |
d9fcf2fb | 3950 | struct ui_file *outbuf) |
96baa820 JM |
3951 | { |
3952 | debug_target.to_rcmd (command, outbuf); | |
3953 | fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command); | |
3954 | } | |
3955 | ||
c906108c | 3956 | static char * |
fba45db2 | 3957 | debug_to_pid_to_exec_file (int pid) |
c906108c | 3958 | { |
c5aa993b | 3959 | char *exec_file; |
c906108c SS |
3960 | |
3961 | exec_file = debug_target.to_pid_to_exec_file (pid); | |
3962 | ||
96baa820 | 3963 | fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n", |
c5aa993b | 3964 | pid, exec_file); |
c906108c SS |
3965 | |
3966 | return exec_file; | |
3967 | } | |
3968 | ||
c906108c | 3969 | static void |
fba45db2 | 3970 | setup_target_debug (void) |
c906108c SS |
3971 | { |
3972 | memcpy (&debug_target, ¤t_target, sizeof debug_target); | |
3973 | ||
3974 | current_target.to_open = debug_to_open; | |
c906108c | 3975 | current_target.to_post_attach = debug_to_post_attach; |
c906108c | 3976 | current_target.to_prepare_to_store = debug_to_prepare_to_store; |
c8e73a31 | 3977 | current_target.deprecated_xfer_memory = deprecated_debug_xfer_memory; |
c906108c SS |
3978 | current_target.to_files_info = debug_to_files_info; |
3979 | current_target.to_insert_breakpoint = debug_to_insert_breakpoint; | |
3980 | current_target.to_remove_breakpoint = debug_to_remove_breakpoint; | |
ccaa32c7 GS |
3981 | current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint; |
3982 | current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint; | |
3983 | current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint; | |
3984 | current_target.to_insert_watchpoint = debug_to_insert_watchpoint; | |
3985 | current_target.to_remove_watchpoint = debug_to_remove_watchpoint; | |
3986 | current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint; | |
3987 | current_target.to_stopped_data_address = debug_to_stopped_data_address; | |
3e43a32a MS |
3988 | current_target.to_watchpoint_addr_within_range |
3989 | = debug_to_watchpoint_addr_within_range; | |
3990 | current_target.to_region_ok_for_hw_watchpoint | |
3991 | = debug_to_region_ok_for_hw_watchpoint; | |
3992 | current_target.to_can_accel_watchpoint_condition | |
3993 | = debug_to_can_accel_watchpoint_condition; | |
c906108c SS |
3994 | current_target.to_terminal_init = debug_to_terminal_init; |
3995 | current_target.to_terminal_inferior = debug_to_terminal_inferior; | |
3e43a32a MS |
3996 | current_target.to_terminal_ours_for_output |
3997 | = debug_to_terminal_ours_for_output; | |
c906108c | 3998 | current_target.to_terminal_ours = debug_to_terminal_ours; |
a790ad35 | 3999 | current_target.to_terminal_save_ours = debug_to_terminal_save_ours; |
c906108c | 4000 | current_target.to_terminal_info = debug_to_terminal_info; |
c906108c SS |
4001 | current_target.to_load = debug_to_load; |
4002 | current_target.to_lookup_symbol = debug_to_lookup_symbol; | |
c906108c | 4003 | current_target.to_post_startup_inferior = debug_to_post_startup_inferior; |
c906108c SS |
4004 | current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint; |
4005 | current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint; | |
4006 | current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint; | |
4007 | current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint; | |
c906108c SS |
4008 | current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint; |
4009 | current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint; | |
c906108c | 4010 | current_target.to_has_exited = debug_to_has_exited; |
c906108c SS |
4011 | current_target.to_can_run = debug_to_can_run; |
4012 | current_target.to_notice_signals = debug_to_notice_signals; | |
c906108c | 4013 | current_target.to_stop = debug_to_stop; |
96baa820 | 4014 | current_target.to_rcmd = debug_to_rcmd; |
c906108c | 4015 | current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file; |
c2250ad1 | 4016 | current_target.to_thread_architecture = debug_to_thread_architecture; |
c906108c | 4017 | } |
c906108c | 4018 | \f |
c5aa993b JM |
4019 | |
4020 | static char targ_desc[] = | |
3e43a32a MS |
4021 | "Names of targets and files being debugged.\nShows the entire \ |
4022 | stack of targets currently in use (including the exec-file,\n\ | |
c906108c SS |
4023 | core-file, and process, if any), as well as the symbol file name."; |
4024 | ||
96baa820 JM |
4025 | static void |
4026 | do_monitor_command (char *cmd, | |
4027 | int from_tty) | |
4028 | { | |
2b5fe715 AC |
4029 | if ((current_target.to_rcmd |
4030 | == (void (*) (char *, struct ui_file *)) tcomplain) | |
96baa820 | 4031 | || (current_target.to_rcmd == debug_to_rcmd |
2b5fe715 AC |
4032 | && (debug_target.to_rcmd |
4033 | == (void (*) (char *, struct ui_file *)) tcomplain))) | |
8a3fe4f8 | 4034 | error (_("\"monitor\" command not supported by this target.")); |
96baa820 JM |
4035 | target_rcmd (cmd, gdb_stdtarg); |
4036 | } | |
4037 | ||
87680a14 JB |
4038 | /* Print the name of each layers of our target stack. */ |
4039 | ||
4040 | static void | |
4041 | maintenance_print_target_stack (char *cmd, int from_tty) | |
4042 | { | |
4043 | struct target_ops *t; | |
4044 | ||
4045 | printf_filtered (_("The current target stack is:\n")); | |
4046 | ||
4047 | for (t = target_stack; t != NULL; t = t->beneath) | |
4048 | { | |
4049 | printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname); | |
4050 | } | |
4051 | } | |
4052 | ||
c6ebd6cf VP |
4053 | /* Controls if async mode is permitted. */ |
4054 | int target_async_permitted = 0; | |
4055 | ||
4056 | /* The set command writes to this variable. If the inferior is | |
4057 | executing, linux_nat_async_permitted is *not* updated. */ | |
4058 | static int target_async_permitted_1 = 0; | |
4059 | ||
4060 | static void | |
4061 | set_maintenance_target_async_permitted (char *args, int from_tty, | |
4062 | struct cmd_list_element *c) | |
4063 | { | |
c35b1492 | 4064 | if (have_live_inferiors ()) |
c6ebd6cf VP |
4065 | { |
4066 | target_async_permitted_1 = target_async_permitted; | |
4067 | error (_("Cannot change this setting while the inferior is running.")); | |
4068 | } | |
4069 | ||
4070 | target_async_permitted = target_async_permitted_1; | |
4071 | } | |
4072 | ||
4073 | static void | |
4074 | show_maintenance_target_async_permitted (struct ui_file *file, int from_tty, | |
4075 | struct cmd_list_element *c, | |
4076 | const char *value) | |
4077 | { | |
3e43a32a MS |
4078 | fprintf_filtered (file, |
4079 | _("Controlling the inferior in " | |
4080 | "asynchronous mode is %s.\n"), value); | |
c6ebd6cf VP |
4081 | } |
4082 | ||
d914c394 SS |
4083 | /* Temporary copies of permission settings. */ |
4084 | ||
4085 | static int may_write_registers_1 = 1; | |
4086 | static int may_write_memory_1 = 1; | |
4087 | static int may_insert_breakpoints_1 = 1; | |
4088 | static int may_insert_tracepoints_1 = 1; | |
4089 | static int may_insert_fast_tracepoints_1 = 1; | |
4090 | static int may_stop_1 = 1; | |
4091 | ||
4092 | /* Make the user-set values match the real values again. */ | |
4093 | ||
4094 | void | |
4095 | update_target_permissions (void) | |
4096 | { | |
4097 | may_write_registers_1 = may_write_registers; | |
4098 | may_write_memory_1 = may_write_memory; | |
4099 | may_insert_breakpoints_1 = may_insert_breakpoints; | |
4100 | may_insert_tracepoints_1 = may_insert_tracepoints; | |
4101 | may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints; | |
4102 | may_stop_1 = may_stop; | |
4103 | } | |
4104 | ||
4105 | /* The one function handles (most of) the permission flags in the same | |
4106 | way. */ | |
4107 | ||
4108 | static void | |
4109 | set_target_permissions (char *args, int from_tty, | |
4110 | struct cmd_list_element *c) | |
4111 | { | |
4112 | if (target_has_execution) | |
4113 | { | |
4114 | update_target_permissions (); | |
4115 | error (_("Cannot change this setting while the inferior is running.")); | |
4116 | } | |
4117 | ||
4118 | /* Make the real values match the user-changed values. */ | |
4119 | may_write_registers = may_write_registers_1; | |
4120 | may_insert_breakpoints = may_insert_breakpoints_1; | |
4121 | may_insert_tracepoints = may_insert_tracepoints_1; | |
4122 | may_insert_fast_tracepoints = may_insert_fast_tracepoints_1; | |
4123 | may_stop = may_stop_1; | |
4124 | update_observer_mode (); | |
4125 | } | |
4126 | ||
4127 | /* Set memory write permission independently of observer mode. */ | |
4128 | ||
4129 | static void | |
4130 | set_write_memory_permission (char *args, int from_tty, | |
4131 | struct cmd_list_element *c) | |
4132 | { | |
4133 | /* Make the real values match the user-changed values. */ | |
4134 | may_write_memory = may_write_memory_1; | |
4135 | update_observer_mode (); | |
4136 | } | |
4137 | ||
4138 | ||
c906108c | 4139 | void |
fba45db2 | 4140 | initialize_targets (void) |
c906108c SS |
4141 | { |
4142 | init_dummy_target (); | |
4143 | push_target (&dummy_target); | |
4144 | ||
4145 | add_info ("target", target_info, targ_desc); | |
4146 | add_info ("files", target_info, targ_desc); | |
4147 | ||
85c07804 AC |
4148 | add_setshow_zinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
4149 | Set target debugging."), _("\ | |
4150 | Show target debugging."), _("\ | |
333dabeb DJ |
4151 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
4152 | verbose. Changes do not take effect until the next \"run\" or \"target\"\n\ | |
85c07804 AC |
4153 | command."), |
4154 | NULL, | |
920d2a44 | 4155 | show_targetdebug, |
85c07804 | 4156 | &setdebuglist, &showdebuglist); |
3a11626d | 4157 | |
2bc416ba | 4158 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
4159 | &trust_readonly, _("\ |
4160 | Set mode for reading from readonly sections."), _("\ | |
4161 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
4162 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
4163 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 4164 | result in significant performance improvement for remote targets."), |
2c5b56ce | 4165 | NULL, |
920d2a44 | 4166 | show_trust_readonly, |
e707bbc2 | 4167 | &setlist, &showlist); |
96baa820 JM |
4168 | |
4169 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 4170 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 4171 | |
87680a14 JB |
4172 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
4173 | _("Print the name of each layer of the internal target stack."), | |
4174 | &maintenanceprintlist); | |
4175 | ||
c6ebd6cf VP |
4176 | add_setshow_boolean_cmd ("target-async", no_class, |
4177 | &target_async_permitted_1, _("\ | |
4178 | Set whether gdb controls the inferior in asynchronous mode."), _("\ | |
4179 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
4180 | Tells gdb whether to control the inferior in asynchronous mode."), | |
4181 | set_maintenance_target_async_permitted, | |
4182 | show_maintenance_target_async_permitted, | |
4183 | &setlist, | |
4184 | &showlist); | |
4185 | ||
4e5d721f | 4186 | add_setshow_boolean_cmd ("stack-cache", class_support, |
9cf1b572 | 4187 | &stack_cache_enabled_p_1, _("\ |
4e5d721f DE |
4188 | Set cache use for stack access."), _("\ |
4189 | Show cache use for stack access."), _("\ | |
4190 | When on, use the data cache for all stack access, regardless of any\n\ | |
4191 | configured memory regions. This improves remote performance significantly.\n\ | |
4192 | By default, caching for stack access is on."), | |
4193 | set_stack_cache_enabled_p, | |
4194 | show_stack_cache_enabled_p, | |
4195 | &setlist, &showlist); | |
4196 | ||
d914c394 SS |
4197 | add_setshow_boolean_cmd ("may-write-registers", class_support, |
4198 | &may_write_registers_1, _("\ | |
4199 | Set permission to write into registers."), _("\ | |
4200 | Show permission to write into registers."), _("\ | |
4201 | When this permission is on, GDB may write into the target's registers.\n\ | |
4202 | Otherwise, any sort of write attempt will result in an error."), | |
4203 | set_target_permissions, NULL, | |
4204 | &setlist, &showlist); | |
4205 | ||
4206 | add_setshow_boolean_cmd ("may-write-memory", class_support, | |
4207 | &may_write_memory_1, _("\ | |
4208 | Set permission to write into target memory."), _("\ | |
4209 | Show permission to write into target memory."), _("\ | |
4210 | When this permission is on, GDB may write into the target's memory.\n\ | |
4211 | Otherwise, any sort of write attempt will result in an error."), | |
4212 | set_write_memory_permission, NULL, | |
4213 | &setlist, &showlist); | |
4214 | ||
4215 | add_setshow_boolean_cmd ("may-insert-breakpoints", class_support, | |
4216 | &may_insert_breakpoints_1, _("\ | |
4217 | Set permission to insert breakpoints in the target."), _("\ | |
4218 | Show permission to insert breakpoints in the target."), _("\ | |
4219 | When this permission is on, GDB may insert breakpoints in the program.\n\ | |
4220 | Otherwise, any sort of insertion attempt will result in an error."), | |
4221 | set_target_permissions, NULL, | |
4222 | &setlist, &showlist); | |
4223 | ||
4224 | add_setshow_boolean_cmd ("may-insert-tracepoints", class_support, | |
4225 | &may_insert_tracepoints_1, _("\ | |
4226 | Set permission to insert tracepoints in the target."), _("\ | |
4227 | Show permission to insert tracepoints in the target."), _("\ | |
4228 | When this permission is on, GDB may insert tracepoints in the program.\n\ | |
4229 | Otherwise, any sort of insertion attempt will result in an error."), | |
4230 | set_target_permissions, NULL, | |
4231 | &setlist, &showlist); | |
4232 | ||
4233 | add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support, | |
4234 | &may_insert_fast_tracepoints_1, _("\ | |
4235 | Set permission to insert fast tracepoints in the target."), _("\ | |
4236 | Show permission to insert fast tracepoints in the target."), _("\ | |
4237 | When this permission is on, GDB may insert fast tracepoints.\n\ | |
4238 | Otherwise, any sort of insertion attempt will result in an error."), | |
4239 | set_target_permissions, NULL, | |
4240 | &setlist, &showlist); | |
4241 | ||
4242 | add_setshow_boolean_cmd ("may-interrupt", class_support, | |
4243 | &may_stop_1, _("\ | |
4244 | Set permission to interrupt or signal the target."), _("\ | |
4245 | Show permission to interrupt or signal the target."), _("\ | |
4246 | When this permission is on, GDB may interrupt/stop the target's execution.\n\ | |
4247 | Otherwise, any attempt to interrupt or stop will be ignored."), | |
4248 | set_target_permissions, NULL, | |
4249 | &setlist, &showlist); | |
4250 | ||
4251 | ||
8add0441 | 4252 | target_dcache = dcache_init (); |
c906108c | 4253 | } |