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, |
0fb0cc75 | 4 | 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
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" |
c906108c | 46 | |
a14ed312 | 47 | static void target_info (char *, int); |
c906108c | 48 | |
a14ed312 | 49 | static void kill_or_be_killed (int); |
c906108c | 50 | |
a14ed312 | 51 | static void default_terminal_info (char *, int); |
c906108c | 52 | |
5009afc5 AS |
53 | static int default_watchpoint_addr_within_range (struct target_ops *, |
54 | CORE_ADDR, CORE_ADDR, int); | |
55 | ||
e0d24f8d WZ |
56 | static int default_region_ok_for_hw_watchpoint (CORE_ADDR, int); |
57 | ||
a14ed312 | 58 | static int nosymbol (char *, CORE_ADDR *); |
c906108c | 59 | |
4ecb6f27 | 60 | static void tcomplain (void) ATTR_NORETURN; |
c906108c | 61 | |
a14ed312 | 62 | static int nomemory (CORE_ADDR, char *, int, int, struct target_ops *); |
c906108c | 63 | |
a14ed312 | 64 | static int return_zero (void); |
c906108c | 65 | |
a14ed312 | 66 | static int return_one (void); |
c906108c | 67 | |
ccaa32c7 GS |
68 | static int return_minus_one (void); |
69 | ||
a14ed312 | 70 | void target_ignore (void); |
c906108c | 71 | |
a14ed312 | 72 | static void target_command (char *, int); |
c906108c | 73 | |
a14ed312 | 74 | static struct target_ops *find_default_run_target (char *); |
c906108c | 75 | |
a14ed312 | 76 | static void nosupport_runtime (void); |
392a587b | 77 | |
4b8a223f | 78 | static LONGEST default_xfer_partial (struct target_ops *ops, |
0088c768 | 79 | enum target_object object, |
1b0ba102 AC |
80 | const char *annex, gdb_byte *readbuf, |
81 | const gdb_byte *writebuf, | |
8aa91c1e | 82 | ULONGEST offset, LONGEST len); |
0088c768 | 83 | |
cf7a04e8 DJ |
84 | static LONGEST current_xfer_partial (struct target_ops *ops, |
85 | enum target_object object, | |
86 | const char *annex, gdb_byte *readbuf, | |
87 | const gdb_byte *writebuf, | |
88 | ULONGEST offset, LONGEST len); | |
c906108c | 89 | |
cf7a04e8 DJ |
90 | static LONGEST target_xfer_partial (struct target_ops *ops, |
91 | enum target_object object, | |
92 | const char *annex, | |
93 | void *readbuf, const void *writebuf, | |
94 | ULONGEST offset, LONGEST len); | |
c906108c | 95 | |
c2250ad1 UW |
96 | static struct gdbarch *default_thread_architecture (struct target_ops *ops, |
97 | ptid_t ptid); | |
98 | ||
a14ed312 | 99 | static void init_dummy_target (void); |
c906108c | 100 | |
aa869812 AC |
101 | static struct target_ops debug_target; |
102 | ||
a14ed312 | 103 | static void debug_to_open (char *, int); |
c906108c | 104 | |
316f2060 | 105 | static void debug_to_prepare_to_store (struct regcache *); |
c906108c | 106 | |
a14ed312 | 107 | static void debug_to_files_info (struct target_ops *); |
c906108c | 108 | |
a6d9a66e UW |
109 | static int debug_to_insert_breakpoint (struct gdbarch *, |
110 | struct bp_target_info *); | |
c906108c | 111 | |
a6d9a66e UW |
112 | static int debug_to_remove_breakpoint (struct gdbarch *, |
113 | struct bp_target_info *); | |
c906108c | 114 | |
ccaa32c7 GS |
115 | static int debug_to_can_use_hw_breakpoint (int, int, int); |
116 | ||
a6d9a66e UW |
117 | static int debug_to_insert_hw_breakpoint (struct gdbarch *, |
118 | struct bp_target_info *); | |
ccaa32c7 | 119 | |
a6d9a66e UW |
120 | static int debug_to_remove_hw_breakpoint (struct gdbarch *, |
121 | struct bp_target_info *); | |
ccaa32c7 GS |
122 | |
123 | static int debug_to_insert_watchpoint (CORE_ADDR, int, int); | |
124 | ||
125 | static int debug_to_remove_watchpoint (CORE_ADDR, int, int); | |
126 | ||
127 | static int debug_to_stopped_by_watchpoint (void); | |
128 | ||
4aa7a7f5 | 129 | static int debug_to_stopped_data_address (struct target_ops *, CORE_ADDR *); |
ccaa32c7 | 130 | |
5009afc5 AS |
131 | static int debug_to_watchpoint_addr_within_range (struct target_ops *, |
132 | CORE_ADDR, CORE_ADDR, int); | |
133 | ||
e0d24f8d WZ |
134 | static int debug_to_region_ok_for_hw_watchpoint (CORE_ADDR, int); |
135 | ||
a14ed312 | 136 | static void debug_to_terminal_init (void); |
c906108c | 137 | |
a14ed312 | 138 | static void debug_to_terminal_inferior (void); |
c906108c | 139 | |
a14ed312 | 140 | static void debug_to_terminal_ours_for_output (void); |
c906108c | 141 | |
a790ad35 SC |
142 | static void debug_to_terminal_save_ours (void); |
143 | ||
a14ed312 | 144 | static void debug_to_terminal_ours (void); |
c906108c | 145 | |
a14ed312 | 146 | static void debug_to_terminal_info (char *, int); |
c906108c | 147 | |
a14ed312 | 148 | static void debug_to_load (char *, int); |
c906108c | 149 | |
a14ed312 | 150 | static int debug_to_lookup_symbol (char *, CORE_ADDR *); |
c906108c | 151 | |
a14ed312 | 152 | static int debug_to_can_run (void); |
c906108c | 153 | |
39f77062 | 154 | static void debug_to_notice_signals (ptid_t); |
c906108c | 155 | |
94cc34af | 156 | static void debug_to_stop (ptid_t); |
c906108c | 157 | |
5ac10fd1 AC |
158 | /* NOTE: cagney/2004-09-29: Many targets reference this variable in |
159 | wierd and mysterious ways. Putting the variable here lets those | |
160 | wierd and mysterious ways keep building while they are being | |
161 | converted to the inferior inheritance structure. */ | |
1df84f13 | 162 | struct target_ops deprecated_child_ops; |
5ac10fd1 | 163 | |
c906108c | 164 | /* Pointer to array of target architecture structures; the size of the |
2bc416ba | 165 | array; the current index into the array; the allocated size of the |
c906108c SS |
166 | array. */ |
167 | struct target_ops **target_structs; | |
168 | unsigned target_struct_size; | |
169 | unsigned target_struct_index; | |
170 | unsigned target_struct_allocsize; | |
171 | #define DEFAULT_ALLOCSIZE 10 | |
172 | ||
173 | /* The initial current target, so that there is always a semi-valid | |
174 | current target. */ | |
175 | ||
176 | static struct target_ops dummy_target; | |
177 | ||
178 | /* Top of target stack. */ | |
179 | ||
258b763a | 180 | static struct target_ops *target_stack; |
c906108c SS |
181 | |
182 | /* The target structure we are currently using to talk to a process | |
183 | or file or whatever "inferior" we have. */ | |
184 | ||
185 | struct target_ops current_target; | |
186 | ||
187 | /* Command list for target. */ | |
188 | ||
189 | static struct cmd_list_element *targetlist = NULL; | |
190 | ||
cf7a04e8 DJ |
191 | /* Nonzero if we should trust readonly sections from the |
192 | executable when reading memory. */ | |
193 | ||
194 | static int trust_readonly = 0; | |
195 | ||
8defab1a DJ |
196 | /* Nonzero if we should show true memory content including |
197 | memory breakpoint inserted by gdb. */ | |
198 | ||
199 | static int show_memory_breakpoints = 0; | |
200 | ||
c906108c SS |
201 | /* Non-zero if we want to see trace of target level stuff. */ |
202 | ||
203 | static int targetdebug = 0; | |
920d2a44 AC |
204 | static void |
205 | show_targetdebug (struct ui_file *file, int from_tty, | |
206 | struct cmd_list_element *c, const char *value) | |
207 | { | |
208 | fprintf_filtered (file, _("Target debugging is %s.\n"), value); | |
209 | } | |
c906108c | 210 | |
a14ed312 | 211 | static void setup_target_debug (void); |
c906108c | 212 | |
4e5d721f DE |
213 | /* The option sets this. */ |
214 | static int stack_cache_enabled_p_1 = 1; | |
215 | /* And set_stack_cache_enabled_p updates this. | |
216 | The reason for the separation is so that we don't flush the cache for | |
217 | on->on transitions. */ | |
218 | static int stack_cache_enabled_p = 1; | |
219 | ||
220 | /* This is called *after* the stack-cache has been set. | |
221 | Flush the cache for off->on and on->off transitions. | |
222 | There's no real need to flush the cache for on->off transitions, | |
223 | except cleanliness. */ | |
224 | ||
225 | static void | |
226 | set_stack_cache_enabled_p (char *args, int from_tty, | |
227 | struct cmd_list_element *c) | |
228 | { | |
229 | if (stack_cache_enabled_p != stack_cache_enabled_p_1) | |
230 | target_dcache_invalidate (); | |
231 | ||
232 | stack_cache_enabled_p = stack_cache_enabled_p_1; | |
233 | } | |
234 | ||
235 | static void | |
236 | show_stack_cache_enabled_p (struct ui_file *file, int from_tty, | |
237 | struct cmd_list_element *c, const char *value) | |
238 | { | |
239 | fprintf_filtered (file, _("Cache use for stack accesses is %s.\n"), value); | |
240 | } | |
241 | ||
242 | /* Cache of memory operations, to speed up remote access. */ | |
243 | static DCACHE *target_dcache; | |
244 | ||
245 | /* Invalidate the target dcache. */ | |
246 | ||
247 | void | |
248 | target_dcache_invalidate (void) | |
249 | { | |
250 | dcache_invalidate (target_dcache); | |
251 | } | |
4930751a | 252 | |
c906108c SS |
253 | /* The user just typed 'target' without the name of a target. */ |
254 | ||
c906108c | 255 | static void |
fba45db2 | 256 | target_command (char *arg, int from_tty) |
c906108c SS |
257 | { |
258 | fputs_filtered ("Argument required (target name). Try `help target'\n", | |
259 | gdb_stdout); | |
260 | } | |
261 | ||
c35b1492 PA |
262 | /* Default target_has_* methods for process_stratum targets. */ |
263 | ||
264 | int | |
265 | default_child_has_all_memory (struct target_ops *ops) | |
266 | { | |
267 | /* If no inferior selected, then we can't read memory here. */ | |
268 | if (ptid_equal (inferior_ptid, null_ptid)) | |
269 | return 0; | |
270 | ||
271 | return 1; | |
272 | } | |
273 | ||
274 | int | |
275 | default_child_has_memory (struct target_ops *ops) | |
276 | { | |
277 | /* If no inferior selected, then we can't read memory here. */ | |
278 | if (ptid_equal (inferior_ptid, null_ptid)) | |
279 | return 0; | |
280 | ||
281 | return 1; | |
282 | } | |
283 | ||
284 | int | |
285 | default_child_has_stack (struct target_ops *ops) | |
286 | { | |
287 | /* If no inferior selected, there's no stack. */ | |
288 | if (ptid_equal (inferior_ptid, null_ptid)) | |
289 | return 0; | |
290 | ||
291 | return 1; | |
292 | } | |
293 | ||
294 | int | |
295 | default_child_has_registers (struct target_ops *ops) | |
296 | { | |
297 | /* Can't read registers from no inferior. */ | |
298 | if (ptid_equal (inferior_ptid, null_ptid)) | |
299 | return 0; | |
300 | ||
301 | return 1; | |
302 | } | |
303 | ||
304 | int | |
305 | default_child_has_execution (struct target_ops *ops) | |
306 | { | |
307 | /* If there's no thread selected, then we can't make it run through | |
308 | hoops. */ | |
309 | if (ptid_equal (inferior_ptid, null_ptid)) | |
310 | return 0; | |
311 | ||
312 | return 1; | |
313 | } | |
314 | ||
315 | ||
316 | int | |
317 | target_has_all_memory_1 (void) | |
318 | { | |
319 | struct target_ops *t; | |
320 | ||
321 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
322 | if (t->to_has_all_memory (t)) | |
323 | return 1; | |
324 | ||
325 | return 0; | |
326 | } | |
327 | ||
328 | int | |
329 | target_has_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_memory (t)) | |
335 | return 1; | |
336 | ||
337 | return 0; | |
338 | } | |
339 | ||
340 | int | |
341 | target_has_stack_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_stack (t)) | |
347 | return 1; | |
348 | ||
349 | return 0; | |
350 | } | |
351 | ||
352 | int | |
353 | target_has_registers_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_registers (t)) | |
359 | return 1; | |
360 | ||
361 | return 0; | |
362 | } | |
363 | ||
364 | int | |
365 | target_has_execution_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_execution (t)) | |
371 | return 1; | |
372 | ||
373 | return 0; | |
374 | } | |
375 | ||
c906108c SS |
376 | /* Add a possible target architecture to the list. */ |
377 | ||
378 | void | |
fba45db2 | 379 | add_target (struct target_ops *t) |
c906108c | 380 | { |
0088c768 | 381 | /* Provide default values for all "must have" methods. */ |
0b603eba AC |
382 | if (t->to_xfer_partial == NULL) |
383 | t->to_xfer_partial = default_xfer_partial; | |
0088c768 | 384 | |
c35b1492 PA |
385 | if (t->to_has_all_memory == NULL) |
386 | t->to_has_all_memory = (int (*) (struct target_ops *)) return_zero; | |
387 | ||
388 | if (t->to_has_memory == NULL) | |
389 | t->to_has_memory = (int (*) (struct target_ops *)) return_zero; | |
390 | ||
391 | if (t->to_has_stack == NULL) | |
392 | t->to_has_stack = (int (*) (struct target_ops *)) return_zero; | |
393 | ||
394 | if (t->to_has_registers == NULL) | |
395 | t->to_has_registers = (int (*) (struct target_ops *)) return_zero; | |
396 | ||
397 | if (t->to_has_execution == NULL) | |
398 | t->to_has_execution = (int (*) (struct target_ops *)) return_zero; | |
399 | ||
c906108c SS |
400 | if (!target_structs) |
401 | { | |
402 | target_struct_allocsize = DEFAULT_ALLOCSIZE; | |
403 | target_structs = (struct target_ops **) xmalloc | |
404 | (target_struct_allocsize * sizeof (*target_structs)); | |
405 | } | |
406 | if (target_struct_size >= target_struct_allocsize) | |
407 | { | |
408 | target_struct_allocsize *= 2; | |
409 | target_structs = (struct target_ops **) | |
c5aa993b JM |
410 | xrealloc ((char *) target_structs, |
411 | target_struct_allocsize * sizeof (*target_structs)); | |
c906108c SS |
412 | } |
413 | target_structs[target_struct_size++] = t; | |
c906108c SS |
414 | |
415 | if (targetlist == NULL) | |
1bedd215 AC |
416 | add_prefix_cmd ("target", class_run, target_command, _("\ |
417 | Connect to a target machine or process.\n\ | |
c906108c SS |
418 | The first argument is the type or protocol of the target machine.\n\ |
419 | Remaining arguments are interpreted by the target protocol. For more\n\ | |
420 | information on the arguments for a particular protocol, type\n\ | |
1bedd215 | 421 | `help target ' followed by the protocol name."), |
c906108c SS |
422 | &targetlist, "target ", 0, &cmdlist); |
423 | add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc, &targetlist); | |
424 | } | |
425 | ||
426 | /* Stub functions */ | |
427 | ||
428 | void | |
fba45db2 | 429 | target_ignore (void) |
c906108c SS |
430 | { |
431 | } | |
432 | ||
7d85a9c0 JB |
433 | void |
434 | target_kill (void) | |
435 | { | |
436 | struct target_ops *t; | |
437 | ||
438 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
439 | if (t->to_kill != NULL) | |
440 | { | |
441 | if (targetdebug) | |
442 | fprintf_unfiltered (gdb_stdlog, "target_kill ()\n"); | |
443 | ||
444 | t->to_kill (t); | |
445 | return; | |
446 | } | |
447 | ||
448 | noprocess (); | |
449 | } | |
450 | ||
11cf8741 JM |
451 | void |
452 | target_load (char *arg, int from_tty) | |
453 | { | |
4e5d721f | 454 | target_dcache_invalidate (); |
11cf8741 JM |
455 | (*current_target.to_load) (arg, from_tty); |
456 | } | |
457 | ||
947b8855 PA |
458 | void |
459 | target_create_inferior (char *exec_file, char *args, | |
460 | char **env, int from_tty) | |
136d6dae VP |
461 | { |
462 | struct target_ops *t; | |
463 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
464 | { | |
465 | if (t->to_create_inferior != NULL) | |
466 | { | |
467 | t->to_create_inferior (t, exec_file, args, env, from_tty); | |
947b8855 PA |
468 | if (targetdebug) |
469 | fprintf_unfiltered (gdb_stdlog, | |
470 | "target_create_inferior (%s, %s, xxx, %d)\n", | |
471 | exec_file, args, from_tty); | |
136d6dae VP |
472 | return; |
473 | } | |
474 | } | |
475 | ||
476 | internal_error (__FILE__, __LINE__, | |
477 | "could not find a target to create inferior"); | |
478 | } | |
479 | ||
d9d2d8b6 PA |
480 | void |
481 | target_terminal_inferior (void) | |
482 | { | |
483 | /* A background resume (``run&'') should leave GDB in control of the | |
484 | terminal. */ | |
485 | if (target_is_async_p () && !sync_execution) | |
486 | return; | |
487 | ||
488 | /* If GDB is resuming the inferior in the foreground, install | |
489 | inferior's terminal modes. */ | |
490 | (*current_target.to_terminal_inferior) (); | |
491 | } | |
136d6dae | 492 | |
c906108c | 493 | static int |
fba45db2 KB |
494 | nomemory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
495 | struct target_ops *t) | |
c906108c | 496 | { |
c5aa993b JM |
497 | errno = EIO; /* Can't read/write this location */ |
498 | return 0; /* No bytes handled */ | |
c906108c SS |
499 | } |
500 | ||
501 | static void | |
fba45db2 | 502 | tcomplain (void) |
c906108c | 503 | { |
8a3fe4f8 | 504 | error (_("You can't do that when your target is `%s'"), |
c906108c SS |
505 | current_target.to_shortname); |
506 | } | |
507 | ||
508 | void | |
fba45db2 | 509 | noprocess (void) |
c906108c | 510 | { |
8a3fe4f8 | 511 | error (_("You can't do that without a process to debug.")); |
c906108c SS |
512 | } |
513 | ||
c906108c | 514 | static int |
fba45db2 | 515 | nosymbol (char *name, CORE_ADDR *addrp) |
c906108c | 516 | { |
c5aa993b | 517 | return 1; /* Symbol does not exist in target env */ |
c906108c SS |
518 | } |
519 | ||
392a587b | 520 | static void |
fba45db2 | 521 | nosupport_runtime (void) |
c906108c | 522 | { |
39f77062 | 523 | if (ptid_equal (inferior_ptid, null_ptid)) |
c906108c SS |
524 | noprocess (); |
525 | else | |
8a3fe4f8 | 526 | error (_("No run-time support for this")); |
c906108c SS |
527 | } |
528 | ||
529 | ||
c906108c | 530 | static void |
fba45db2 | 531 | default_terminal_info (char *args, int from_tty) |
c906108c | 532 | { |
a3f17187 | 533 | printf_unfiltered (_("No saved terminal information.\n")); |
c906108c SS |
534 | } |
535 | ||
536 | /* This is the default target_create_inferior and target_attach function. | |
537 | If the current target is executing, it asks whether to kill it off. | |
538 | If this function returns without calling error(), it has killed off | |
539 | the target, and the operation should be attempted. */ | |
540 | ||
541 | static void | |
fba45db2 | 542 | kill_or_be_killed (int from_tty) |
c906108c SS |
543 | { |
544 | if (target_has_execution) | |
545 | { | |
a3f17187 | 546 | printf_unfiltered (_("You are already running a program:\n")); |
c906108c | 547 | target_files_info (); |
9e2f0ad4 | 548 | if (query (_("Kill it? "))) |
c5aa993b JM |
549 | { |
550 | target_kill (); | |
551 | if (target_has_execution) | |
8a3fe4f8 | 552 | error (_("Killing the program did not help.")); |
c5aa993b JM |
553 | return; |
554 | } | |
555 | else | |
556 | { | |
8a3fe4f8 | 557 | error (_("Program not killed.")); |
c5aa993b | 558 | } |
c906108c | 559 | } |
c5aa993b | 560 | tcomplain (); |
c906108c SS |
561 | } |
562 | ||
0ef643c8 JB |
563 | /* A default implementation for the to_get_ada_task_ptid target method. |
564 | ||
565 | This function builds the PTID by using both LWP and TID as part of | |
566 | the PTID lwp and tid elements. The pid used is the pid of the | |
567 | inferior_ptid. */ | |
568 | ||
2c0b251b | 569 | static ptid_t |
0ef643c8 JB |
570 | default_get_ada_task_ptid (long lwp, long tid) |
571 | { | |
572 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid); | |
573 | } | |
574 | ||
7998dfc3 AC |
575 | /* Go through the target stack from top to bottom, copying over zero |
576 | entries in current_target, then filling in still empty entries. In | |
577 | effect, we are doing class inheritance through the pushed target | |
578 | vectors. | |
579 | ||
580 | NOTE: cagney/2003-10-17: The problem with this inheritance, as it | |
581 | is currently implemented, is that it discards any knowledge of | |
582 | which target an inherited method originally belonged to. | |
583 | Consequently, new new target methods should instead explicitly and | |
584 | locally search the target stack for the target that can handle the | |
585 | request. */ | |
c906108c SS |
586 | |
587 | static void | |
7998dfc3 | 588 | update_current_target (void) |
c906108c | 589 | { |
7998dfc3 AC |
590 | struct target_ops *t; |
591 | ||
08d8bcd7 | 592 | /* First, reset current's contents. */ |
7998dfc3 AC |
593 | memset (¤t_target, 0, sizeof (current_target)); |
594 | ||
595 | #define INHERIT(FIELD, TARGET) \ | |
596 | if (!current_target.FIELD) \ | |
597 | current_target.FIELD = (TARGET)->FIELD | |
598 | ||
599 | for (t = target_stack; t; t = t->beneath) | |
600 | { | |
601 | INHERIT (to_shortname, t); | |
602 | INHERIT (to_longname, t); | |
603 | INHERIT (to_doc, t); | |
b52323fa UW |
604 | /* Do not inherit to_open. */ |
605 | /* Do not inherit to_close. */ | |
136d6dae | 606 | /* Do not inherit to_attach. */ |
7998dfc3 | 607 | INHERIT (to_post_attach, t); |
dc177b7a | 608 | INHERIT (to_attach_no_wait, t); |
136d6dae | 609 | /* Do not inherit to_detach. */ |
597320e7 | 610 | /* Do not inherit to_disconnect. */ |
28439f5e | 611 | /* Do not inherit to_resume. */ |
117de6a9 | 612 | /* Do not inherit to_wait. */ |
28439f5e PA |
613 | /* Do not inherit to_fetch_registers. */ |
614 | /* Do not inherit to_store_registers. */ | |
7998dfc3 | 615 | INHERIT (to_prepare_to_store, t); |
c8e73a31 | 616 | INHERIT (deprecated_xfer_memory, t); |
7998dfc3 AC |
617 | INHERIT (to_files_info, t); |
618 | INHERIT (to_insert_breakpoint, t); | |
619 | INHERIT (to_remove_breakpoint, t); | |
620 | INHERIT (to_can_use_hw_breakpoint, t); | |
621 | INHERIT (to_insert_hw_breakpoint, t); | |
622 | INHERIT (to_remove_hw_breakpoint, t); | |
623 | INHERIT (to_insert_watchpoint, t); | |
624 | INHERIT (to_remove_watchpoint, t); | |
625 | INHERIT (to_stopped_data_address, t); | |
74174d2e | 626 | INHERIT (to_have_steppable_watchpoint, t); |
7998dfc3 | 627 | INHERIT (to_have_continuable_watchpoint, t); |
5009afc5 AS |
628 | INHERIT (to_stopped_by_watchpoint, t); |
629 | INHERIT (to_watchpoint_addr_within_range, t); | |
e0d24f8d | 630 | INHERIT (to_region_ok_for_hw_watchpoint, t); |
7998dfc3 AC |
631 | INHERIT (to_terminal_init, t); |
632 | INHERIT (to_terminal_inferior, t); | |
633 | INHERIT (to_terminal_ours_for_output, t); | |
634 | INHERIT (to_terminal_ours, t); | |
635 | INHERIT (to_terminal_save_ours, t); | |
636 | INHERIT (to_terminal_info, t); | |
7d85a9c0 | 637 | /* Do not inherit to_kill. */ |
7998dfc3 AC |
638 | INHERIT (to_load, t); |
639 | INHERIT (to_lookup_symbol, t); | |
136d6dae | 640 | /* Do no inherit to_create_inferior. */ |
7998dfc3 AC |
641 | INHERIT (to_post_startup_inferior, t); |
642 | INHERIT (to_acknowledge_created_inferior, t); | |
643 | INHERIT (to_insert_fork_catchpoint, t); | |
644 | INHERIT (to_remove_fork_catchpoint, t); | |
645 | INHERIT (to_insert_vfork_catchpoint, t); | |
646 | INHERIT (to_remove_vfork_catchpoint, t); | |
ee057212 | 647 | /* Do not inherit to_follow_fork. */ |
7998dfc3 AC |
648 | INHERIT (to_insert_exec_catchpoint, t); |
649 | INHERIT (to_remove_exec_catchpoint, t); | |
7998dfc3 | 650 | INHERIT (to_has_exited, t); |
117de6a9 | 651 | /* Do not inherit to_mourn_inferiour. */ |
7998dfc3 AC |
652 | INHERIT (to_can_run, t); |
653 | INHERIT (to_notice_signals, t); | |
28439f5e PA |
654 | /* Do not inherit to_thread_alive. */ |
655 | /* Do not inherit to_find_new_threads. */ | |
117de6a9 | 656 | /* Do not inherit to_pid_to_str. */ |
7998dfc3 AC |
657 | INHERIT (to_extra_thread_info, t); |
658 | INHERIT (to_stop, t); | |
4b8a223f | 659 | /* Do not inherit to_xfer_partial. */ |
7998dfc3 | 660 | INHERIT (to_rcmd, t); |
7998dfc3 | 661 | INHERIT (to_pid_to_exec_file, t); |
49d03eab | 662 | INHERIT (to_log_command, t); |
7998dfc3 | 663 | INHERIT (to_stratum, t); |
c35b1492 PA |
664 | /* Do not inherit to_has_all_memory */ |
665 | /* Do not inherit to_has_memory */ | |
666 | /* Do not inherit to_has_stack */ | |
667 | /* Do not inherit to_has_registers */ | |
668 | /* Do not inherit to_has_execution */ | |
7998dfc3 | 669 | INHERIT (to_has_thread_control, t); |
7998dfc3 AC |
670 | INHERIT (to_can_async_p, t); |
671 | INHERIT (to_is_async_p, t); | |
672 | INHERIT (to_async, t); | |
b84876c2 | 673 | INHERIT (to_async_mask, t); |
7998dfc3 AC |
674 | INHERIT (to_find_memory_regions, t); |
675 | INHERIT (to_make_corefile_notes, t); | |
117de6a9 | 676 | /* Do not inherit to_get_thread_local_address. */ |
b2175913 | 677 | INHERIT (to_can_execute_reverse, t); |
c2250ad1 | 678 | INHERIT (to_thread_architecture, t); |
424163ea | 679 | /* Do not inherit to_read_description. */ |
0ef643c8 | 680 | INHERIT (to_get_ada_task_ptid, t); |
08388c79 | 681 | /* Do not inherit to_search_memory. */ |
8a305172 | 682 | INHERIT (to_supports_multi_process, t); |
7998dfc3 | 683 | INHERIT (to_magic, t); |
fd79ecee | 684 | /* Do not inherit to_memory_map. */ |
a76d924d DJ |
685 | /* Do not inherit to_flash_erase. */ |
686 | /* Do not inherit to_flash_done. */ | |
7998dfc3 AC |
687 | } |
688 | #undef INHERIT | |
689 | ||
690 | /* Clean up a target struct so it no longer has any zero pointers in | |
0088c768 AC |
691 | it. Some entries are defaulted to a method that print an error, |
692 | others are hard-wired to a standard recursive default. */ | |
c906108c SS |
693 | |
694 | #define de_fault(field, value) \ | |
7998dfc3 AC |
695 | if (!current_target.field) \ |
696 | current_target.field = value | |
0d06e24b | 697 | |
2bc416ba DJ |
698 | de_fault (to_open, |
699 | (void (*) (char *, int)) | |
0d06e24b | 700 | tcomplain); |
2bc416ba DJ |
701 | de_fault (to_close, |
702 | (void (*) (int)) | |
0d06e24b | 703 | target_ignore); |
2bc416ba DJ |
704 | de_fault (to_post_attach, |
705 | (void (*) (int)) | |
0d06e24b | 706 | target_ignore); |
2bc416ba | 707 | de_fault (to_prepare_to_store, |
316f2060 | 708 | (void (*) (struct regcache *)) |
0d06e24b | 709 | noprocess); |
2bc416ba DJ |
710 | de_fault (deprecated_xfer_memory, |
711 | (int (*) (CORE_ADDR, gdb_byte *, int, int, struct mem_attrib *, struct target_ops *)) | |
0d06e24b | 712 | nomemory); |
2bc416ba DJ |
713 | de_fault (to_files_info, |
714 | (void (*) (struct target_ops *)) | |
0d06e24b | 715 | target_ignore); |
2bc416ba | 716 | de_fault (to_insert_breakpoint, |
0d06e24b | 717 | memory_insert_breakpoint); |
2bc416ba | 718 | de_fault (to_remove_breakpoint, |
0d06e24b | 719 | memory_remove_breakpoint); |
ccaa32c7 GS |
720 | de_fault (to_can_use_hw_breakpoint, |
721 | (int (*) (int, int, int)) | |
722 | return_zero); | |
723 | de_fault (to_insert_hw_breakpoint, | |
a6d9a66e | 724 | (int (*) (struct gdbarch *, struct bp_target_info *)) |
ccaa32c7 GS |
725 | return_minus_one); |
726 | de_fault (to_remove_hw_breakpoint, | |
a6d9a66e | 727 | (int (*) (struct gdbarch *, struct bp_target_info *)) |
ccaa32c7 GS |
728 | return_minus_one); |
729 | de_fault (to_insert_watchpoint, | |
730 | (int (*) (CORE_ADDR, int, int)) | |
731 | return_minus_one); | |
732 | de_fault (to_remove_watchpoint, | |
733 | (int (*) (CORE_ADDR, int, int)) | |
734 | return_minus_one); | |
735 | de_fault (to_stopped_by_watchpoint, | |
736 | (int (*) (void)) | |
737 | return_zero); | |
738 | de_fault (to_stopped_data_address, | |
4aa7a7f5 | 739 | (int (*) (struct target_ops *, CORE_ADDR *)) |
ccaa32c7 | 740 | return_zero); |
5009afc5 AS |
741 | de_fault (to_watchpoint_addr_within_range, |
742 | default_watchpoint_addr_within_range); | |
e0d24f8d WZ |
743 | de_fault (to_region_ok_for_hw_watchpoint, |
744 | default_region_ok_for_hw_watchpoint); | |
2bc416ba DJ |
745 | de_fault (to_terminal_init, |
746 | (void (*) (void)) | |
0d06e24b | 747 | target_ignore); |
2bc416ba DJ |
748 | de_fault (to_terminal_inferior, |
749 | (void (*) (void)) | |
0d06e24b | 750 | target_ignore); |
2bc416ba DJ |
751 | de_fault (to_terminal_ours_for_output, |
752 | (void (*) (void)) | |
0d06e24b | 753 | target_ignore); |
2bc416ba DJ |
754 | de_fault (to_terminal_ours, |
755 | (void (*) (void)) | |
0d06e24b | 756 | target_ignore); |
2bc416ba DJ |
757 | de_fault (to_terminal_save_ours, |
758 | (void (*) (void)) | |
a790ad35 | 759 | target_ignore); |
2bc416ba | 760 | de_fault (to_terminal_info, |
0d06e24b | 761 | default_terminal_info); |
2bc416ba DJ |
762 | de_fault (to_load, |
763 | (void (*) (char *, int)) | |
0d06e24b | 764 | tcomplain); |
2bc416ba DJ |
765 | de_fault (to_lookup_symbol, |
766 | (int (*) (char *, CORE_ADDR *)) | |
0d06e24b | 767 | nosymbol); |
2bc416ba DJ |
768 | de_fault (to_post_startup_inferior, |
769 | (void (*) (ptid_t)) | |
0d06e24b | 770 | target_ignore); |
2bc416ba DJ |
771 | de_fault (to_acknowledge_created_inferior, |
772 | (void (*) (int)) | |
0d06e24b | 773 | target_ignore); |
2bc416ba DJ |
774 | de_fault (to_insert_fork_catchpoint, |
775 | (void (*) (int)) | |
0d06e24b | 776 | tcomplain); |
2bc416ba DJ |
777 | de_fault (to_remove_fork_catchpoint, |
778 | (int (*) (int)) | |
0d06e24b | 779 | tcomplain); |
2bc416ba DJ |
780 | de_fault (to_insert_vfork_catchpoint, |
781 | (void (*) (int)) | |
0d06e24b | 782 | tcomplain); |
2bc416ba DJ |
783 | de_fault (to_remove_vfork_catchpoint, |
784 | (int (*) (int)) | |
0d06e24b | 785 | tcomplain); |
2bc416ba DJ |
786 | de_fault (to_insert_exec_catchpoint, |
787 | (void (*) (int)) | |
0d06e24b | 788 | tcomplain); |
2bc416ba DJ |
789 | de_fault (to_remove_exec_catchpoint, |
790 | (int (*) (int)) | |
0d06e24b | 791 | tcomplain); |
2bc416ba DJ |
792 | de_fault (to_has_exited, |
793 | (int (*) (int, int, int *)) | |
0d06e24b | 794 | return_zero); |
2bc416ba | 795 | de_fault (to_can_run, |
0d06e24b | 796 | return_zero); |
2bc416ba DJ |
797 | de_fault (to_notice_signals, |
798 | (void (*) (ptid_t)) | |
0d06e24b | 799 | target_ignore); |
2bc416ba DJ |
800 | de_fault (to_extra_thread_info, |
801 | (char *(*) (struct thread_info *)) | |
0d06e24b | 802 | return_zero); |
2bc416ba | 803 | de_fault (to_stop, |
94cc34af | 804 | (void (*) (ptid_t)) |
0d06e24b | 805 | target_ignore); |
cf7a04e8 | 806 | current_target.to_xfer_partial = current_xfer_partial; |
2bc416ba DJ |
807 | de_fault (to_rcmd, |
808 | (void (*) (char *, struct ui_file *)) | |
0d06e24b | 809 | tcomplain); |
2bc416ba DJ |
810 | de_fault (to_pid_to_exec_file, |
811 | (char *(*) (int)) | |
0d06e24b | 812 | return_zero); |
2bc416ba DJ |
813 | de_fault (to_async, |
814 | (void (*) (void (*) (enum inferior_event_type, void*), void*)) | |
0d06e24b | 815 | tcomplain); |
b84876c2 PA |
816 | de_fault (to_async_mask, |
817 | (int (*) (int)) | |
818 | return_one); | |
c2250ad1 UW |
819 | de_fault (to_thread_architecture, |
820 | default_thread_architecture); | |
424163ea | 821 | current_target.to_read_description = NULL; |
0ef643c8 JB |
822 | de_fault (to_get_ada_task_ptid, |
823 | (ptid_t (*) (long, long)) | |
824 | default_get_ada_task_ptid); | |
8a305172 PA |
825 | de_fault (to_supports_multi_process, |
826 | (int (*) (void)) | |
827 | return_zero); | |
c906108c | 828 | #undef de_fault |
c906108c | 829 | |
7998dfc3 AC |
830 | /* Finally, position the target-stack beneath the squashed |
831 | "current_target". That way code looking for a non-inherited | |
832 | target method can quickly and simply find it. */ | |
833 | current_target.beneath = target_stack; | |
b4b61fdb DJ |
834 | |
835 | if (targetdebug) | |
836 | setup_target_debug (); | |
c906108c SS |
837 | } |
838 | ||
839 | /* Push a new target type into the stack of the existing target accessors, | |
840 | possibly superseding some of the existing accessors. | |
841 | ||
842 | Result is zero if the pushed target ended up on top of the stack, | |
843 | nonzero if at least one target is on top of it. | |
844 | ||
845 | Rather than allow an empty stack, we always have the dummy target at | |
846 | the bottom stratum, so we can call the function vectors without | |
847 | checking them. */ | |
848 | ||
849 | int | |
fba45db2 | 850 | push_target (struct target_ops *t) |
c906108c | 851 | { |
258b763a | 852 | struct target_ops **cur; |
c906108c SS |
853 | |
854 | /* Check magic number. If wrong, it probably means someone changed | |
855 | the struct definition, but not all the places that initialize one. */ | |
856 | if (t->to_magic != OPS_MAGIC) | |
857 | { | |
c5aa993b JM |
858 | fprintf_unfiltered (gdb_stderr, |
859 | "Magic number of %s target struct wrong\n", | |
860 | t->to_shortname); | |
e2e0b3e5 | 861 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
c906108c SS |
862 | } |
863 | ||
258b763a AC |
864 | /* Find the proper stratum to install this target in. */ |
865 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
c906108c | 866 | { |
258b763a | 867 | if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum) |
c906108c SS |
868 | break; |
869 | } | |
870 | ||
258b763a | 871 | /* If there's already targets at this stratum, remove them. */ |
88c231eb | 872 | /* FIXME: cagney/2003-10-15: I think this should be popping all |
258b763a AC |
873 | targets to CUR, and not just those at this stratum level. */ |
874 | while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum) | |
875 | { | |
876 | /* There's already something at this stratum level. Close it, | |
877 | and un-hook it from the stack. */ | |
878 | struct target_ops *tmp = (*cur); | |
879 | (*cur) = (*cur)->beneath; | |
880 | tmp->beneath = NULL; | |
f1c07ab0 | 881 | target_close (tmp, 0); |
258b763a | 882 | } |
c906108c SS |
883 | |
884 | /* We have removed all targets in our stratum, now add the new one. */ | |
258b763a AC |
885 | t->beneath = (*cur); |
886 | (*cur) = t; | |
c906108c SS |
887 | |
888 | update_current_target (); | |
889 | ||
258b763a AC |
890 | /* Not on top? */ |
891 | return (t != target_stack); | |
c906108c SS |
892 | } |
893 | ||
2bc416ba | 894 | /* Remove a target_ops vector from the stack, wherever it may be. |
c906108c SS |
895 | Return how many times it was removed (0 or 1). */ |
896 | ||
897 | int | |
fba45db2 | 898 | unpush_target (struct target_ops *t) |
c906108c | 899 | { |
258b763a AC |
900 | struct target_ops **cur; |
901 | struct target_ops *tmp; | |
c906108c | 902 | |
c8d104ad PA |
903 | if (t->to_stratum == dummy_stratum) |
904 | internal_error (__FILE__, __LINE__, | |
905 | "Attempt to unpush the dummy target"); | |
906 | ||
c906108c SS |
907 | /* Look for the specified target. Note that we assume that a target |
908 | can only occur once in the target stack. */ | |
909 | ||
258b763a AC |
910 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) |
911 | { | |
912 | if ((*cur) == t) | |
913 | break; | |
914 | } | |
c906108c | 915 | |
258b763a | 916 | if ((*cur) == NULL) |
c906108c SS |
917 | return 0; /* Didn't find target_ops, quit now */ |
918 | ||
5269965e AC |
919 | /* NOTE: cagney/2003-12-06: In '94 the close call was made |
920 | unconditional by moving it to before the above check that the | |
921 | target was in the target stack (something about "Change the way | |
922 | pushing and popping of targets work to support target overlays | |
923 | and inheritance"). This doesn't make much sense - only open | |
924 | targets should be closed. */ | |
925 | target_close (t, 0); | |
926 | ||
c906108c | 927 | /* Unchain the target */ |
258b763a AC |
928 | tmp = (*cur); |
929 | (*cur) = (*cur)->beneath; | |
930 | tmp->beneath = NULL; | |
c906108c SS |
931 | |
932 | update_current_target (); | |
c906108c SS |
933 | |
934 | return 1; | |
935 | } | |
936 | ||
937 | void | |
fba45db2 | 938 | pop_target (void) |
c906108c | 939 | { |
b52323fa | 940 | target_close (target_stack, 0); /* Let it clean up */ |
258b763a | 941 | if (unpush_target (target_stack) == 1) |
c906108c SS |
942 | return; |
943 | ||
c5aa993b JM |
944 | fprintf_unfiltered (gdb_stderr, |
945 | "pop_target couldn't find target %s\n", | |
946 | current_target.to_shortname); | |
e2e0b3e5 | 947 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
c906108c SS |
948 | } |
949 | ||
aa76d38d | 950 | void |
87ab71f0 | 951 | pop_all_targets_above (enum strata above_stratum, int quitting) |
aa76d38d | 952 | { |
87ab71f0 | 953 | while ((int) (current_target.to_stratum) > (int) above_stratum) |
aa76d38d | 954 | { |
b52323fa | 955 | target_close (target_stack, quitting); |
aa76d38d PA |
956 | if (!unpush_target (target_stack)) |
957 | { | |
958 | fprintf_unfiltered (gdb_stderr, | |
959 | "pop_all_targets couldn't find target %s\n", | |
b52323fa | 960 | target_stack->to_shortname); |
aa76d38d PA |
961 | internal_error (__FILE__, __LINE__, |
962 | _("failed internal consistency check")); | |
963 | break; | |
964 | } | |
965 | } | |
966 | } | |
967 | ||
87ab71f0 PA |
968 | void |
969 | pop_all_targets (int quitting) | |
970 | { | |
971 | pop_all_targets_above (dummy_stratum, quitting); | |
972 | } | |
973 | ||
72f5cf0e | 974 | /* Using the objfile specified in OBJFILE, find the address for the |
9e35dae4 DJ |
975 | current thread's thread-local storage with offset OFFSET. */ |
976 | CORE_ADDR | |
977 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) | |
978 | { | |
979 | volatile CORE_ADDR addr = 0; | |
117de6a9 PA |
980 | struct target_ops *target; |
981 | ||
982 | for (target = current_target.beneath; | |
983 | target != NULL; | |
984 | target = target->beneath) | |
985 | { | |
986 | if (target->to_get_thread_local_address != NULL) | |
987 | break; | |
988 | } | |
9e35dae4 | 989 | |
117de6a9 | 990 | if (target != NULL |
1cf3db46 | 991 | && gdbarch_fetch_tls_load_module_address_p (target_gdbarch)) |
9e35dae4 DJ |
992 | { |
993 | ptid_t ptid = inferior_ptid; | |
994 | volatile struct gdb_exception ex; | |
995 | ||
996 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
997 | { | |
998 | CORE_ADDR lm_addr; | |
999 | ||
1000 | /* Fetch the load module address for this objfile. */ | |
1cf3db46 | 1001 | lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch, |
9e35dae4 DJ |
1002 | objfile); |
1003 | /* If it's 0, throw the appropriate exception. */ | |
1004 | if (lm_addr == 0) | |
1005 | throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR, | |
1006 | _("TLS load module not found")); | |
1007 | ||
117de6a9 | 1008 | addr = target->to_get_thread_local_address (target, ptid, lm_addr, offset); |
9e35dae4 DJ |
1009 | } |
1010 | /* If an error occurred, print TLS related messages here. Otherwise, | |
1011 | throw the error to some higher catcher. */ | |
1012 | if (ex.reason < 0) | |
1013 | { | |
1014 | int objfile_is_library = (objfile->flags & OBJF_SHARED); | |
1015 | ||
1016 | switch (ex.error) | |
1017 | { | |
1018 | case TLS_NO_LIBRARY_SUPPORT_ERROR: | |
1019 | error (_("Cannot find thread-local variables in this thread library.")); | |
1020 | break; | |
1021 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: | |
1022 | if (objfile_is_library) | |
1023 | error (_("Cannot find shared library `%s' in dynamic" | |
1024 | " linker's load module list"), objfile->name); | |
1025 | else | |
1026 | error (_("Cannot find executable file `%s' in dynamic" | |
1027 | " linker's load module list"), objfile->name); | |
1028 | break; | |
1029 | case TLS_NOT_ALLOCATED_YET_ERROR: | |
1030 | if (objfile_is_library) | |
1031 | error (_("The inferior has not yet allocated storage for" | |
1032 | " thread-local variables in\n" | |
1033 | "the shared library `%s'\n" | |
1034 | "for %s"), | |
1035 | objfile->name, target_pid_to_str (ptid)); | |
1036 | else | |
1037 | error (_("The inferior has not yet allocated storage for" | |
1038 | " thread-local variables in\n" | |
1039 | "the executable `%s'\n" | |
1040 | "for %s"), | |
1041 | objfile->name, target_pid_to_str (ptid)); | |
1042 | break; | |
1043 | case TLS_GENERIC_ERROR: | |
1044 | if (objfile_is_library) | |
1045 | error (_("Cannot find thread-local storage for %s, " | |
1046 | "shared library %s:\n%s"), | |
1047 | target_pid_to_str (ptid), | |
1048 | objfile->name, ex.message); | |
1049 | else | |
1050 | error (_("Cannot find thread-local storage for %s, " | |
1051 | "executable file %s:\n%s"), | |
1052 | target_pid_to_str (ptid), | |
1053 | objfile->name, ex.message); | |
1054 | break; | |
1055 | default: | |
1056 | throw_exception (ex); | |
1057 | break; | |
1058 | } | |
1059 | } | |
1060 | } | |
1061 | /* It wouldn't be wrong here to try a gdbarch method, too; finding | |
1062 | TLS is an ABI-specific thing. But we don't do that yet. */ | |
1063 | else | |
1064 | error (_("Cannot find thread-local variables on this target")); | |
1065 | ||
1066 | return addr; | |
1067 | } | |
1068 | ||
c906108c SS |
1069 | #undef MIN |
1070 | #define MIN(A, B) (((A) <= (B)) ? (A) : (B)) | |
1071 | ||
1072 | /* target_read_string -- read a null terminated string, up to LEN bytes, | |
1073 | from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful. | |
1074 | Set *STRING to a pointer to malloc'd memory containing the data; the caller | |
1075 | is responsible for freeing it. Return the number of bytes successfully | |
1076 | read. */ | |
1077 | ||
1078 | int | |
fba45db2 | 1079 | target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop) |
c906108c SS |
1080 | { |
1081 | int tlen, origlen, offset, i; | |
1b0ba102 | 1082 | gdb_byte buf[4]; |
c906108c SS |
1083 | int errcode = 0; |
1084 | char *buffer; | |
1085 | int buffer_allocated; | |
1086 | char *bufptr; | |
1087 | unsigned int nbytes_read = 0; | |
1088 | ||
6217bf3e MS |
1089 | gdb_assert (string); |
1090 | ||
c906108c SS |
1091 | /* Small for testing. */ |
1092 | buffer_allocated = 4; | |
1093 | buffer = xmalloc (buffer_allocated); | |
1094 | bufptr = buffer; | |
1095 | ||
1096 | origlen = len; | |
1097 | ||
1098 | while (len > 0) | |
1099 | { | |
1100 | tlen = MIN (len, 4 - (memaddr & 3)); | |
1101 | offset = memaddr & 3; | |
1102 | ||
1b0ba102 | 1103 | errcode = target_read_memory (memaddr & ~3, buf, sizeof buf); |
c906108c SS |
1104 | if (errcode != 0) |
1105 | { | |
1106 | /* The transfer request might have crossed the boundary to an | |
1107 | unallocated region of memory. Retry the transfer, requesting | |
1108 | a single byte. */ | |
1109 | tlen = 1; | |
1110 | offset = 0; | |
b8eb5af0 | 1111 | errcode = target_read_memory (memaddr, buf, 1); |
c906108c SS |
1112 | if (errcode != 0) |
1113 | goto done; | |
1114 | } | |
1115 | ||
1116 | if (bufptr - buffer + tlen > buffer_allocated) | |
1117 | { | |
1118 | unsigned int bytes; | |
1119 | bytes = bufptr - buffer; | |
1120 | buffer_allocated *= 2; | |
1121 | buffer = xrealloc (buffer, buffer_allocated); | |
1122 | bufptr = buffer + bytes; | |
1123 | } | |
1124 | ||
1125 | for (i = 0; i < tlen; i++) | |
1126 | { | |
1127 | *bufptr++ = buf[i + offset]; | |
1128 | if (buf[i + offset] == '\000') | |
1129 | { | |
1130 | nbytes_read += i + 1; | |
1131 | goto done; | |
1132 | } | |
1133 | } | |
1134 | ||
1135 | memaddr += tlen; | |
1136 | len -= tlen; | |
1137 | nbytes_read += tlen; | |
1138 | } | |
c5aa993b | 1139 | done: |
6217bf3e | 1140 | *string = buffer; |
c906108c SS |
1141 | if (errnop != NULL) |
1142 | *errnop = errcode; | |
c906108c SS |
1143 | return nbytes_read; |
1144 | } | |
1145 | ||
07b82ea5 PA |
1146 | struct target_section_table * |
1147 | target_get_section_table (struct target_ops *target) | |
1148 | { | |
1149 | struct target_ops *t; | |
1150 | ||
1151 | if (targetdebug) | |
1152 | fprintf_unfiltered (gdb_stdlog, "target_get_section_table ()\n"); | |
1153 | ||
1154 | for (t = target; t != NULL; t = t->beneath) | |
1155 | if (t->to_get_section_table != NULL) | |
1156 | return (*t->to_get_section_table) (t); | |
1157 | ||
1158 | return NULL; | |
1159 | } | |
1160 | ||
8db32d44 | 1161 | /* Find a section containing ADDR. */ |
07b82ea5 | 1162 | |
0542c86d | 1163 | struct target_section * |
8db32d44 AC |
1164 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
1165 | { | |
07b82ea5 | 1166 | struct target_section_table *table = target_get_section_table (target); |
0542c86d | 1167 | struct target_section *secp; |
07b82ea5 PA |
1168 | |
1169 | if (table == NULL) | |
1170 | return NULL; | |
1171 | ||
1172 | for (secp = table->sections; secp < table->sections_end; secp++) | |
8db32d44 AC |
1173 | { |
1174 | if (addr >= secp->addr && addr < secp->endaddr) | |
1175 | return secp; | |
1176 | } | |
1177 | return NULL; | |
1178 | } | |
1179 | ||
cf7a04e8 DJ |
1180 | /* Perform a partial memory transfer. The arguments and return |
1181 | value are just as for target_xfer_partial. */ | |
1182 | ||
1183 | static LONGEST | |
4e5d721f DE |
1184 | memory_xfer_partial (struct target_ops *ops, enum target_object object, |
1185 | void *readbuf, const void *writebuf, ULONGEST memaddr, | |
1186 | LONGEST len) | |
0779438d | 1187 | { |
cf7a04e8 DJ |
1188 | LONGEST res; |
1189 | int reg_len; | |
1190 | struct mem_region *region; | |
4e5d721f | 1191 | struct inferior *inf; |
cf7a04e8 DJ |
1192 | |
1193 | /* Zero length requests are ok and require no work. */ | |
1194 | if (len == 0) | |
1195 | return 0; | |
1196 | ||
07b82ea5 PA |
1197 | /* For accesses to unmapped overlay sections, read directly from |
1198 | files. Must do this first, as MEMADDR may need adjustment. */ | |
1199 | if (readbuf != NULL && overlay_debugging) | |
1200 | { | |
1201 | struct obj_section *section = find_pc_overlay (memaddr); | |
1202 | if (pc_in_unmapped_range (memaddr, section)) | |
1203 | { | |
1204 | struct target_section_table *table | |
1205 | = target_get_section_table (ops); | |
1206 | const char *section_name = section->the_bfd_section->name; | |
1207 | memaddr = overlay_mapped_address (memaddr, section); | |
1208 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
1209 | memaddr, len, | |
1210 | table->sections, | |
1211 | table->sections_end, | |
1212 | section_name); | |
1213 | } | |
1214 | } | |
1215 | ||
1216 | /* Try the executable files, if "trust-readonly-sections" is set. */ | |
cf7a04e8 DJ |
1217 | if (readbuf != NULL && trust_readonly) |
1218 | { | |
0542c86d | 1219 | struct target_section *secp; |
07b82ea5 | 1220 | struct target_section_table *table; |
cf7a04e8 DJ |
1221 | |
1222 | secp = target_section_by_addr (ops, memaddr); | |
1223 | if (secp != NULL | |
1224 | && (bfd_get_section_flags (secp->bfd, secp->the_bfd_section) | |
1225 | & SEC_READONLY)) | |
07b82ea5 PA |
1226 | { |
1227 | table = target_get_section_table (ops); | |
1228 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
1229 | memaddr, len, | |
1230 | table->sections, | |
1231 | table->sections_end, | |
1232 | NULL); | |
1233 | } | |
98646950 UW |
1234 | } |
1235 | ||
cf7a04e8 DJ |
1236 | /* Try GDB's internal data cache. */ |
1237 | region = lookup_mem_region (memaddr); | |
4b5752d0 VP |
1238 | /* region->hi == 0 means there's no upper bound. */ |
1239 | if (memaddr + len < region->hi || region->hi == 0) | |
cf7a04e8 DJ |
1240 | reg_len = len; |
1241 | else | |
1242 | reg_len = region->hi - memaddr; | |
1243 | ||
1244 | switch (region->attrib.mode) | |
1245 | { | |
1246 | case MEM_RO: | |
1247 | if (writebuf != NULL) | |
1248 | return -1; | |
1249 | break; | |
1250 | ||
1251 | case MEM_WO: | |
1252 | if (readbuf != NULL) | |
1253 | return -1; | |
1254 | break; | |
a76d924d DJ |
1255 | |
1256 | case MEM_FLASH: | |
1257 | /* We only support writing to flash during "load" for now. */ | |
1258 | if (writebuf != NULL) | |
1259 | error (_("Writing to flash memory forbidden in this context")); | |
1260 | break; | |
4b5752d0 VP |
1261 | |
1262 | case MEM_NONE: | |
1263 | return -1; | |
cf7a04e8 DJ |
1264 | } |
1265 | ||
4e5d721f DE |
1266 | inf = find_inferior_pid (ptid_get_pid (inferior_ptid)); |
1267 | ||
1268 | if (inf != NULL | |
1269 | && (region->attrib.cache | |
1270 | || (stack_cache_enabled_p && object == TARGET_OBJECT_STACK_MEMORY))) | |
cf7a04e8 | 1271 | { |
cf7a04e8 | 1272 | if (readbuf != NULL) |
25f122dc | 1273 | res = dcache_xfer_memory (ops, target_dcache, memaddr, readbuf, |
cf7a04e8 DJ |
1274 | reg_len, 0); |
1275 | else | |
1276 | /* FIXME drow/2006-08-09: If we're going to preserve const | |
1277 | correctness dcache_xfer_memory should take readbuf and | |
1278 | writebuf. */ | |
25f122dc | 1279 | res = dcache_xfer_memory (ops, target_dcache, memaddr, |
cf7a04e8 DJ |
1280 | (void *) writebuf, |
1281 | reg_len, 1); | |
1282 | if (res <= 0) | |
1283 | return -1; | |
1284 | else | |
8defab1a DJ |
1285 | { |
1286 | if (readbuf && !show_memory_breakpoints) | |
1287 | breakpoint_restore_shadows (readbuf, memaddr, reg_len); | |
1288 | return res; | |
1289 | } | |
cf7a04e8 DJ |
1290 | } |
1291 | ||
4e5d721f DE |
1292 | /* Make sure the cache gets updated no matter what - if we are writing |
1293 | to the stack, even if this write is not tagged as such, we still need | |
1294 | to update the cache. */ | |
1295 | ||
1296 | if (inf != NULL | |
1297 | && readbuf == NULL | |
1298 | && !region->attrib.cache | |
1299 | && stack_cache_enabled_p | |
1300 | && object != TARGET_OBJECT_STACK_MEMORY) | |
1301 | { | |
1302 | dcache_update (target_dcache, memaddr, (void *) writebuf, reg_len); | |
1303 | } | |
1304 | ||
cf7a04e8 DJ |
1305 | /* If none of those methods found the memory we wanted, fall back |
1306 | to a target partial transfer. Normally a single call to | |
1307 | to_xfer_partial is enough; if it doesn't recognize an object | |
1308 | it will call the to_xfer_partial of the next target down. | |
1309 | But for memory this won't do. Memory is the only target | |
1310 | object which can be read from more than one valid target. | |
1311 | A core file, for instance, could have some of memory but | |
1312 | delegate other bits to the target below it. So, we must | |
1313 | manually try all targets. */ | |
1314 | ||
1315 | do | |
1316 | { | |
1317 | res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
4b5752d0 | 1318 | readbuf, writebuf, memaddr, reg_len); |
cf7a04e8 | 1319 | if (res > 0) |
8defab1a | 1320 | break; |
cf7a04e8 | 1321 | |
5ad3a4ca DJ |
1322 | /* We want to continue past core files to executables, but not |
1323 | past a running target's memory. */ | |
c35b1492 | 1324 | if (ops->to_has_all_memory (ops)) |
8defab1a | 1325 | break; |
5ad3a4ca | 1326 | |
cf7a04e8 DJ |
1327 | ops = ops->beneath; |
1328 | } | |
1329 | while (ops != NULL); | |
1330 | ||
8defab1a DJ |
1331 | if (readbuf && !show_memory_breakpoints) |
1332 | breakpoint_restore_shadows (readbuf, memaddr, reg_len); | |
1333 | ||
cf7a04e8 DJ |
1334 | /* If we still haven't got anything, return the last error. We |
1335 | give up. */ | |
1336 | return res; | |
0779438d AC |
1337 | } |
1338 | ||
8defab1a DJ |
1339 | static void |
1340 | restore_show_memory_breakpoints (void *arg) | |
1341 | { | |
1342 | show_memory_breakpoints = (uintptr_t) arg; | |
1343 | } | |
1344 | ||
1345 | struct cleanup * | |
1346 | make_show_memory_breakpoints_cleanup (int show) | |
1347 | { | |
1348 | int current = show_memory_breakpoints; | |
1349 | show_memory_breakpoints = show; | |
1350 | ||
1351 | return make_cleanup (restore_show_memory_breakpoints, | |
1352 | (void *) (uintptr_t) current); | |
1353 | } | |
1354 | ||
27394598 AC |
1355 | static LONGEST |
1356 | target_xfer_partial (struct target_ops *ops, | |
1357 | enum target_object object, const char *annex, | |
1358 | void *readbuf, const void *writebuf, | |
1359 | ULONGEST offset, LONGEST len) | |
1360 | { | |
1361 | LONGEST retval; | |
1362 | ||
1363 | gdb_assert (ops->to_xfer_partial != NULL); | |
cf7a04e8 DJ |
1364 | |
1365 | /* If this is a memory transfer, let the memory-specific code | |
1366 | have a look at it instead. Memory transfers are more | |
1367 | complicated. */ | |
4e5d721f DE |
1368 | if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY) |
1369 | retval = memory_xfer_partial (ops, object, readbuf, | |
1370 | writebuf, offset, len); | |
cf7a04e8 DJ |
1371 | else |
1372 | { | |
1373 | enum target_object raw_object = object; | |
1374 | ||
1375 | /* If this is a raw memory transfer, request the normal | |
1376 | memory object from other layers. */ | |
1377 | if (raw_object == TARGET_OBJECT_RAW_MEMORY) | |
1378 | raw_object = TARGET_OBJECT_MEMORY; | |
1379 | ||
1380 | retval = ops->to_xfer_partial (ops, raw_object, annex, readbuf, | |
1381 | writebuf, offset, len); | |
1382 | } | |
1383 | ||
27394598 AC |
1384 | if (targetdebug) |
1385 | { | |
1386 | const unsigned char *myaddr = NULL; | |
1387 | ||
1388 | fprintf_unfiltered (gdb_stdlog, | |
53b71562 | 1389 | "%s:target_xfer_partial (%d, %s, %s, %s, %s, %s) = %s", |
27394598 AC |
1390 | ops->to_shortname, |
1391 | (int) object, | |
1392 | (annex ? annex : "(null)"), | |
53b71562 JB |
1393 | host_address_to_string (readbuf), |
1394 | host_address_to_string (writebuf), | |
0b1553bc UW |
1395 | core_addr_to_string_nz (offset), |
1396 | plongest (len), plongest (retval)); | |
27394598 AC |
1397 | |
1398 | if (readbuf) | |
1399 | myaddr = readbuf; | |
1400 | if (writebuf) | |
1401 | myaddr = writebuf; | |
1402 | if (retval > 0 && myaddr != NULL) | |
1403 | { | |
1404 | int i; | |
2bc416ba | 1405 | |
27394598 AC |
1406 | fputs_unfiltered (", bytes =", gdb_stdlog); |
1407 | for (i = 0; i < retval; i++) | |
1408 | { | |
53b71562 | 1409 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1410 | { |
1411 | if (targetdebug < 2 && i > 0) | |
1412 | { | |
1413 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
1414 | break; | |
1415 | } | |
1416 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1417 | } | |
2bc416ba | 1418 | |
27394598 AC |
1419 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
1420 | } | |
1421 | } | |
2bc416ba | 1422 | |
27394598 AC |
1423 | fputc_unfiltered ('\n', gdb_stdlog); |
1424 | } | |
1425 | return retval; | |
1426 | } | |
1427 | ||
c906108c SS |
1428 | /* Read LEN bytes of target memory at address MEMADDR, placing the results in |
1429 | GDB's memory at MYADDR. Returns either 0 for success or an errno value | |
1430 | if any error occurs. | |
1431 | ||
1432 | If an error occurs, no guarantee is made about the contents of the data at | |
1433 | MYADDR. In particular, the caller should not depend upon partial reads | |
1434 | filling the buffer with good data. There is no way for the caller to know | |
1435 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 DJ |
1436 | deal with partial reads should call target_read (which will retry until |
1437 | it makes no progress, and then return how much was transferred). */ | |
c906108c SS |
1438 | |
1439 | int | |
fc1a4b47 | 1440 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 1441 | { |
c35b1492 PA |
1442 | /* Dispatch to the topmost target, not the flattened current_target. |
1443 | Memory accesses check target->to_has_(all_)memory, and the | |
1444 | flattened target doesn't inherit those. */ | |
1445 | if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1446 | myaddr, memaddr, len) == len) |
1447 | return 0; | |
0779438d | 1448 | else |
cf7a04e8 | 1449 | return EIO; |
c906108c SS |
1450 | } |
1451 | ||
4e5d721f DE |
1452 | /* Like target_read_memory, but specify explicitly that this is a read from |
1453 | the target's stack. This may trigger different cache behavior. */ | |
1454 | ||
1455 | int | |
1456 | target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, int len) | |
1457 | { | |
1458 | /* Dispatch to the topmost target, not the flattened current_target. | |
1459 | Memory accesses check target->to_has_(all_)memory, and the | |
1460 | flattened target doesn't inherit those. */ | |
1461 | ||
1462 | if (target_read (current_target.beneath, TARGET_OBJECT_STACK_MEMORY, NULL, | |
1463 | myaddr, memaddr, len) == len) | |
1464 | return 0; | |
1465 | else | |
1466 | return EIO; | |
1467 | } | |
1468 | ||
c906108c | 1469 | int |
fc1a4b47 | 1470 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) |
c906108c | 1471 | { |
c35b1492 PA |
1472 | /* Dispatch to the topmost target, not the flattened current_target. |
1473 | Memory accesses check target->to_has_(all_)memory, and the | |
1474 | flattened target doesn't inherit those. */ | |
1475 | if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1476 | myaddr, memaddr, len) == len) |
1477 | return 0; | |
0779438d | 1478 | else |
cf7a04e8 | 1479 | return EIO; |
c906108c | 1480 | } |
c5aa993b | 1481 | |
fd79ecee DJ |
1482 | /* Fetch the target's memory map. */ |
1483 | ||
1484 | VEC(mem_region_s) * | |
1485 | target_memory_map (void) | |
1486 | { | |
1487 | VEC(mem_region_s) *result; | |
1488 | struct mem_region *last_one, *this_one; | |
1489 | int ix; | |
1490 | struct target_ops *t; | |
1491 | ||
1492 | if (targetdebug) | |
1493 | fprintf_unfiltered (gdb_stdlog, "target_memory_map ()\n"); | |
1494 | ||
1495 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1496 | if (t->to_memory_map != NULL) | |
1497 | break; | |
1498 | ||
1499 | if (t == NULL) | |
1500 | return NULL; | |
1501 | ||
1502 | result = t->to_memory_map (t); | |
1503 | if (result == NULL) | |
1504 | return NULL; | |
1505 | ||
1506 | qsort (VEC_address (mem_region_s, result), | |
1507 | VEC_length (mem_region_s, result), | |
1508 | sizeof (struct mem_region), mem_region_cmp); | |
1509 | ||
1510 | /* Check that regions do not overlap. Simultaneously assign | |
1511 | a numbering for the "mem" commands to use to refer to | |
1512 | each region. */ | |
1513 | last_one = NULL; | |
1514 | for (ix = 0; VEC_iterate (mem_region_s, result, ix, this_one); ix++) | |
1515 | { | |
1516 | this_one->number = ix; | |
1517 | ||
1518 | if (last_one && last_one->hi > this_one->lo) | |
1519 | { | |
1520 | warning (_("Overlapping regions in memory map: ignoring")); | |
1521 | VEC_free (mem_region_s, result); | |
1522 | return NULL; | |
1523 | } | |
1524 | last_one = this_one; | |
1525 | } | |
1526 | ||
1527 | return result; | |
1528 | } | |
1529 | ||
a76d924d DJ |
1530 | void |
1531 | target_flash_erase (ULONGEST address, LONGEST length) | |
1532 | { | |
1533 | struct target_ops *t; | |
1534 | ||
1535 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1536 | if (t->to_flash_erase != NULL) | |
1537 | { | |
1538 | if (targetdebug) | |
1539 | fprintf_unfiltered (gdb_stdlog, "target_flash_erase (%s, %s)\n", | |
5af949e3 | 1540 | hex_string (address), phex (length, 0)); |
8944021f DJ |
1541 | t->to_flash_erase (t, address, length); |
1542 | return; | |
a76d924d DJ |
1543 | } |
1544 | ||
1545 | tcomplain (); | |
1546 | } | |
1547 | ||
1548 | void | |
1549 | target_flash_done (void) | |
1550 | { | |
1551 | struct target_ops *t; | |
1552 | ||
1553 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1554 | if (t->to_flash_done != NULL) | |
1555 | { | |
1556 | if (targetdebug) | |
1557 | fprintf_unfiltered (gdb_stdlog, "target_flash_done\n"); | |
8944021f DJ |
1558 | t->to_flash_done (t); |
1559 | return; | |
a76d924d DJ |
1560 | } |
1561 | ||
1562 | tcomplain (); | |
1563 | } | |
1564 | ||
920d2a44 AC |
1565 | static void |
1566 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1567 | struct cmd_list_element *c, const char *value) | |
1568 | { | |
1569 | fprintf_filtered (file, _("\ | |
1570 | Mode for reading from readonly sections is %s.\n"), | |
1571 | value); | |
1572 | } | |
3a11626d | 1573 | |
1e3ff5ad AC |
1574 | /* More generic transfers. */ |
1575 | ||
0088c768 | 1576 | static LONGEST |
8aa91c1e | 1577 | default_xfer_partial (struct target_ops *ops, enum target_object object, |
2bc416ba | 1578 | const char *annex, gdb_byte *readbuf, |
1b0ba102 | 1579 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) |
0088c768 AC |
1580 | { |
1581 | if (object == TARGET_OBJECT_MEMORY | |
c8e73a31 AC |
1582 | && ops->deprecated_xfer_memory != NULL) |
1583 | /* If available, fall back to the target's | |
1584 | "deprecated_xfer_memory" method. */ | |
0088c768 | 1585 | { |
4b8a223f | 1586 | int xfered = -1; |
0088c768 | 1587 | errno = 0; |
4b8a223f AC |
1588 | if (writebuf != NULL) |
1589 | { | |
1590 | void *buffer = xmalloc (len); | |
1591 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |
1592 | memcpy (buffer, writebuf, len); | |
c8e73a31 AC |
1593 | xfered = ops->deprecated_xfer_memory (offset, buffer, len, |
1594 | 1/*write*/, NULL, ops); | |
4b8a223f AC |
1595 | do_cleanups (cleanup); |
1596 | } | |
1597 | if (readbuf != NULL) | |
244e85c8 MS |
1598 | xfered = ops->deprecated_xfer_memory (offset, readbuf, len, |
1599 | 0/*read*/, NULL, ops); | |
0088c768 AC |
1600 | if (xfered > 0) |
1601 | return xfered; | |
1602 | else if (xfered == 0 && errno == 0) | |
c8e73a31 AC |
1603 | /* "deprecated_xfer_memory" uses 0, cross checked against |
1604 | ERRNO as one indication of an error. */ | |
0088c768 AC |
1605 | return 0; |
1606 | else | |
1607 | return -1; | |
1608 | } | |
1609 | else if (ops->beneath != NULL) | |
cf7a04e8 DJ |
1610 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, |
1611 | readbuf, writebuf, offset, len); | |
1612 | else | |
1613 | return -1; | |
1614 | } | |
1615 | ||
1616 | /* The xfer_partial handler for the topmost target. Unlike the default, | |
1617 | it does not need to handle memory specially; it just passes all | |
1618 | requests down the stack. */ | |
1619 | ||
1620 | static LONGEST | |
1621 | current_xfer_partial (struct target_ops *ops, enum target_object object, | |
1622 | const char *annex, gdb_byte *readbuf, | |
1623 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1624 | { | |
1625 | if (ops->beneath != NULL) | |
1626 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, | |
1627 | readbuf, writebuf, offset, len); | |
0088c768 AC |
1628 | else |
1629 | return -1; | |
1630 | } | |
1631 | ||
1632 | /* Target vector read/write partial wrapper functions. | |
1633 | ||
1634 | NOTE: cagney/2003-10-21: I wonder if having "to_xfer_partial | |
1635 | (inbuf, outbuf)", instead of separate read/write methods, make life | |
1636 | easier. */ | |
1637 | ||
13547ab6 | 1638 | static LONGEST |
1e3ff5ad AC |
1639 | target_read_partial (struct target_ops *ops, |
1640 | enum target_object object, | |
1b0ba102 | 1641 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1642 | ULONGEST offset, LONGEST len) |
1643 | { | |
27394598 | 1644 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len); |
1e3ff5ad AC |
1645 | } |
1646 | ||
13547ab6 | 1647 | static LONGEST |
1e3ff5ad AC |
1648 | target_write_partial (struct target_ops *ops, |
1649 | enum target_object object, | |
1b0ba102 | 1650 | const char *annex, const gdb_byte *buf, |
1e3ff5ad AC |
1651 | ULONGEST offset, LONGEST len) |
1652 | { | |
27394598 | 1653 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len); |
1e3ff5ad AC |
1654 | } |
1655 | ||
1656 | /* Wrappers to perform the full transfer. */ | |
1657 | LONGEST | |
1658 | target_read (struct target_ops *ops, | |
1659 | enum target_object object, | |
1b0ba102 | 1660 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1661 | ULONGEST offset, LONGEST len) |
1662 | { | |
1663 | LONGEST xfered = 0; | |
1664 | while (xfered < len) | |
1665 | { | |
0088c768 | 1666 | LONGEST xfer = target_read_partial (ops, object, annex, |
fc1a4b47 | 1667 | (gdb_byte *) buf + xfered, |
0088c768 | 1668 | offset + xfered, len - xfered); |
1e3ff5ad | 1669 | /* Call an observer, notifying them of the xfer progress? */ |
13547ab6 DJ |
1670 | if (xfer == 0) |
1671 | return xfered; | |
1672 | if (xfer < 0) | |
0088c768 | 1673 | return -1; |
1e3ff5ad AC |
1674 | xfered += xfer; |
1675 | QUIT; | |
1676 | } | |
1677 | return len; | |
1678 | } | |
1679 | ||
d5086790 VP |
1680 | LONGEST |
1681 | target_read_until_error (struct target_ops *ops, | |
1682 | enum target_object object, | |
1683 | const char *annex, gdb_byte *buf, | |
1684 | ULONGEST offset, LONGEST len) | |
1685 | { | |
1686 | LONGEST xfered = 0; | |
1687 | while (xfered < len) | |
1688 | { | |
1689 | LONGEST xfer = target_read_partial (ops, object, annex, | |
1690 | (gdb_byte *) buf + xfered, | |
1691 | offset + xfered, len - xfered); | |
1692 | /* Call an observer, notifying them of the xfer progress? */ | |
1693 | if (xfer == 0) | |
1694 | return xfered; | |
1695 | if (xfer < 0) | |
1696 | { | |
1697 | /* We've got an error. Try to read in smaller blocks. */ | |
1698 | ULONGEST start = offset + xfered; | |
1699 | ULONGEST remaining = len - xfered; | |
1700 | ULONGEST half; | |
1701 | ||
1702 | /* If an attempt was made to read a random memory address, | |
1703 | it's likely that the very first byte is not accessible. | |
1704 | Try reading the first byte, to avoid doing log N tries | |
1705 | below. */ | |
1706 | xfer = target_read_partial (ops, object, annex, | |
1707 | (gdb_byte *) buf + xfered, start, 1); | |
1708 | if (xfer <= 0) | |
1709 | return xfered; | |
1710 | start += 1; | |
1711 | remaining -= 1; | |
1712 | half = remaining/2; | |
1713 | ||
1714 | while (half > 0) | |
1715 | { | |
1716 | xfer = target_read_partial (ops, object, annex, | |
1717 | (gdb_byte *) buf + xfered, | |
1718 | start, half); | |
1719 | if (xfer == 0) | |
1720 | return xfered; | |
1721 | if (xfer < 0) | |
1722 | { | |
1723 | remaining = half; | |
1724 | } | |
1725 | else | |
1726 | { | |
1727 | /* We have successfully read the first half. So, the | |
1728 | error must be in the second half. Adjust start and | |
1729 | remaining to point at the second half. */ | |
1730 | xfered += xfer; | |
1731 | start += xfer; | |
1732 | remaining -= xfer; | |
1733 | } | |
1734 | half = remaining/2; | |
1735 | } | |
1736 | ||
1737 | return xfered; | |
1738 | } | |
1739 | xfered += xfer; | |
1740 | QUIT; | |
1741 | } | |
1742 | return len; | |
1743 | } | |
1744 | ||
1745 | ||
cf7a04e8 DJ |
1746 | /* An alternative to target_write with progress callbacks. */ |
1747 | ||
1e3ff5ad | 1748 | LONGEST |
cf7a04e8 DJ |
1749 | target_write_with_progress (struct target_ops *ops, |
1750 | enum target_object object, | |
1751 | const char *annex, const gdb_byte *buf, | |
1752 | ULONGEST offset, LONGEST len, | |
1753 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad AC |
1754 | { |
1755 | LONGEST xfered = 0; | |
a76d924d DJ |
1756 | |
1757 | /* Give the progress callback a chance to set up. */ | |
1758 | if (progress) | |
1759 | (*progress) (0, baton); | |
1760 | ||
1e3ff5ad AC |
1761 | while (xfered < len) |
1762 | { | |
1763 | LONGEST xfer = target_write_partial (ops, object, annex, | |
fc1a4b47 | 1764 | (gdb_byte *) buf + xfered, |
1e3ff5ad | 1765 | offset + xfered, len - xfered); |
cf7a04e8 | 1766 | |
13547ab6 DJ |
1767 | if (xfer == 0) |
1768 | return xfered; | |
1769 | if (xfer < 0) | |
0088c768 | 1770 | return -1; |
cf7a04e8 DJ |
1771 | |
1772 | if (progress) | |
1773 | (*progress) (xfer, baton); | |
1774 | ||
1e3ff5ad AC |
1775 | xfered += xfer; |
1776 | QUIT; | |
1777 | } | |
1778 | return len; | |
1779 | } | |
1780 | ||
cf7a04e8 DJ |
1781 | LONGEST |
1782 | target_write (struct target_ops *ops, | |
1783 | enum target_object object, | |
1784 | const char *annex, const gdb_byte *buf, | |
1785 | ULONGEST offset, LONGEST len) | |
1786 | { | |
1787 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
1788 | NULL, NULL); | |
1789 | } | |
1790 | ||
159f81f3 DJ |
1791 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
1792 | the size of the transferred data. PADDING additional bytes are | |
1793 | available in *BUF_P. This is a helper function for | |
1794 | target_read_alloc; see the declaration of that function for more | |
1795 | information. */ | |
13547ab6 | 1796 | |
159f81f3 DJ |
1797 | static LONGEST |
1798 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, | |
1799 | const char *annex, gdb_byte **buf_p, int padding) | |
13547ab6 DJ |
1800 | { |
1801 | size_t buf_alloc, buf_pos; | |
1802 | gdb_byte *buf; | |
1803 | LONGEST n; | |
1804 | ||
1805 | /* This function does not have a length parameter; it reads the | |
1806 | entire OBJECT). Also, it doesn't support objects fetched partly | |
1807 | from one target and partly from another (in a different stratum, | |
1808 | e.g. a core file and an executable). Both reasons make it | |
1809 | unsuitable for reading memory. */ | |
1810 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
1811 | ||
1812 | /* Start by reading up to 4K at a time. The target will throttle | |
1813 | this number down if necessary. */ | |
1814 | buf_alloc = 4096; | |
1815 | buf = xmalloc (buf_alloc); | |
1816 | buf_pos = 0; | |
1817 | while (1) | |
1818 | { | |
1819 | n = target_read_partial (ops, object, annex, &buf[buf_pos], | |
159f81f3 | 1820 | buf_pos, buf_alloc - buf_pos - padding); |
13547ab6 DJ |
1821 | if (n < 0) |
1822 | { | |
1823 | /* An error occurred. */ | |
1824 | xfree (buf); | |
1825 | return -1; | |
1826 | } | |
1827 | else if (n == 0) | |
1828 | { | |
1829 | /* Read all there was. */ | |
1830 | if (buf_pos == 0) | |
1831 | xfree (buf); | |
1832 | else | |
1833 | *buf_p = buf; | |
1834 | return buf_pos; | |
1835 | } | |
1836 | ||
1837 | buf_pos += n; | |
1838 | ||
1839 | /* If the buffer is filling up, expand it. */ | |
1840 | if (buf_alloc < buf_pos * 2) | |
1841 | { | |
1842 | buf_alloc *= 2; | |
1843 | buf = xrealloc (buf, buf_alloc); | |
1844 | } | |
1845 | ||
1846 | QUIT; | |
1847 | } | |
1848 | } | |
1849 | ||
159f81f3 DJ |
1850 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
1851 | the size of the transferred data. See the declaration in "target.h" | |
1852 | function for more information about the return value. */ | |
1853 | ||
1854 | LONGEST | |
1855 | target_read_alloc (struct target_ops *ops, enum target_object object, | |
1856 | const char *annex, gdb_byte **buf_p) | |
1857 | { | |
1858 | return target_read_alloc_1 (ops, object, annex, buf_p, 0); | |
1859 | } | |
1860 | ||
1861 | /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and | |
1862 | returned as a string, allocated using xmalloc. If an error occurs | |
1863 | or the transfer is unsupported, NULL is returned. Empty objects | |
1864 | are returned as allocated but empty strings. A warning is issued | |
1865 | if the result contains any embedded NUL bytes. */ | |
1866 | ||
1867 | char * | |
1868 | target_read_stralloc (struct target_ops *ops, enum target_object object, | |
1869 | const char *annex) | |
1870 | { | |
1871 | gdb_byte *buffer; | |
1872 | LONGEST transferred; | |
1873 | ||
1874 | transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1); | |
1875 | ||
1876 | if (transferred < 0) | |
1877 | return NULL; | |
1878 | ||
1879 | if (transferred == 0) | |
1880 | return xstrdup (""); | |
1881 | ||
1882 | buffer[transferred] = 0; | |
1883 | if (strlen (buffer) < transferred) | |
1884 | warning (_("target object %d, annex %s, " | |
1885 | "contained unexpected null characters"), | |
1886 | (int) object, annex ? annex : "(none)"); | |
1887 | ||
1888 | return (char *) buffer; | |
1889 | } | |
1890 | ||
b6591e8b AC |
1891 | /* Memory transfer methods. */ |
1892 | ||
1893 | void | |
1b0ba102 | 1894 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
1895 | LONGEST len) |
1896 | { | |
07b82ea5 PA |
1897 | /* This method is used to read from an alternate, non-current |
1898 | target. This read must bypass the overlay support (as symbols | |
1899 | don't match this target), and GDB's internal cache (wrong cache | |
1900 | for this target). */ | |
1901 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) | |
b6591e8b AC |
1902 | != len) |
1903 | memory_error (EIO, addr); | |
1904 | } | |
1905 | ||
1906 | ULONGEST | |
1907 | get_target_memory_unsigned (struct target_ops *ops, | |
e17a4113 | 1908 | CORE_ADDR addr, int len, enum bfd_endian byte_order) |
b6591e8b | 1909 | { |
f6519ebc | 1910 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
1911 | |
1912 | gdb_assert (len <= sizeof (buf)); | |
1913 | get_target_memory (ops, addr, buf, len); | |
e17a4113 | 1914 | return extract_unsigned_integer (buf, len, byte_order); |
b6591e8b AC |
1915 | } |
1916 | ||
c906108c | 1917 | static void |
fba45db2 | 1918 | target_info (char *args, int from_tty) |
c906108c SS |
1919 | { |
1920 | struct target_ops *t; | |
c906108c | 1921 | int has_all_mem = 0; |
c5aa993b | 1922 | |
c906108c | 1923 | if (symfile_objfile != NULL) |
a3f17187 | 1924 | printf_unfiltered (_("Symbols from \"%s\".\n"), symfile_objfile->name); |
c906108c | 1925 | |
258b763a | 1926 | for (t = target_stack; t != NULL; t = t->beneath) |
c906108c | 1927 | { |
c35b1492 | 1928 | if (!(*t->to_has_memory) (t)) |
c906108c SS |
1929 | continue; |
1930 | ||
c5aa993b | 1931 | if ((int) (t->to_stratum) <= (int) dummy_stratum) |
c906108c SS |
1932 | continue; |
1933 | if (has_all_mem) | |
a3f17187 | 1934 | printf_unfiltered (_("\tWhile running this, GDB does not access memory from...\n")); |
c5aa993b JM |
1935 | printf_unfiltered ("%s:\n", t->to_longname); |
1936 | (t->to_files_info) (t); | |
c35b1492 | 1937 | has_all_mem = (*t->to_has_all_memory) (t); |
c906108c SS |
1938 | } |
1939 | } | |
1940 | ||
fd79ecee DJ |
1941 | /* This function is called before any new inferior is created, e.g. |
1942 | by running a program, attaching, or connecting to a target. | |
1943 | It cleans up any state from previous invocations which might | |
1944 | change between runs. This is a subset of what target_preopen | |
1945 | resets (things which might change between targets). */ | |
1946 | ||
1947 | void | |
1948 | target_pre_inferior (int from_tty) | |
1949 | { | |
b9db4ced UW |
1950 | /* Clear out solib state. Otherwise the solib state of the previous |
1951 | inferior might have survived and is entirely wrong for the new | |
1952 | target. This has been observed on GNU/Linux using glibc 2.3. How | |
1953 | to reproduce: | |
1954 | ||
1955 | bash$ ./foo& | |
1956 | [1] 4711 | |
1957 | bash$ ./foo& | |
1958 | [1] 4712 | |
1959 | bash$ gdb ./foo | |
1960 | [...] | |
1961 | (gdb) attach 4711 | |
1962 | (gdb) detach | |
1963 | (gdb) attach 4712 | |
1964 | Cannot access memory at address 0xdeadbeef | |
1965 | */ | |
b9db4ced | 1966 | |
50c71eaf PA |
1967 | /* In some OSs, the shared library list is the same/global/shared |
1968 | across inferiors. If code is shared between processes, so are | |
1969 | memory regions and features. */ | |
1970 | if (!gdbarch_has_global_solist (target_gdbarch)) | |
1971 | { | |
1972 | no_shared_libraries (NULL, from_tty); | |
1973 | ||
1974 | invalidate_target_mem_regions (); | |
424163ea | 1975 | |
50c71eaf PA |
1976 | target_clear_description (); |
1977 | } | |
fd79ecee DJ |
1978 | } |
1979 | ||
b8fa0bfa PA |
1980 | /* Callback for iterate_over_inferiors. Gets rid of the given |
1981 | inferior. */ | |
1982 | ||
1983 | static int | |
1984 | dispose_inferior (struct inferior *inf, void *args) | |
1985 | { | |
1986 | struct thread_info *thread; | |
1987 | ||
1988 | thread = any_thread_of_process (inf->pid); | |
1989 | if (thread) | |
1990 | { | |
1991 | switch_to_thread (thread->ptid); | |
1992 | ||
1993 | /* Core inferiors actually should be detached, not killed. */ | |
1994 | if (target_has_execution) | |
1995 | target_kill (); | |
1996 | else | |
1997 | target_detach (NULL, 0); | |
1998 | } | |
1999 | ||
2000 | return 0; | |
2001 | } | |
2002 | ||
c906108c SS |
2003 | /* This is to be called by the open routine before it does |
2004 | anything. */ | |
2005 | ||
2006 | void | |
fba45db2 | 2007 | target_preopen (int from_tty) |
c906108c | 2008 | { |
c5aa993b | 2009 | dont_repeat (); |
c906108c | 2010 | |
b8fa0bfa | 2011 | if (have_inferiors ()) |
c5aa993b | 2012 | { |
adf40b2e | 2013 | if (!from_tty |
b8fa0bfa PA |
2014 | || !have_live_inferiors () |
2015 | || query (_("A program is being debugged already. Kill it? "))) | |
2016 | iterate_over_inferiors (dispose_inferior, NULL); | |
c906108c | 2017 | else |
8a3fe4f8 | 2018 | error (_("Program not killed.")); |
c906108c SS |
2019 | } |
2020 | ||
2021 | /* Calling target_kill may remove the target from the stack. But if | |
2022 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
2023 | /* Leave the exec target, though. The user may be switching from a |
2024 | live process to a core of the same program. */ | |
2025 | pop_all_targets_above (file_stratum, 0); | |
fd79ecee DJ |
2026 | |
2027 | target_pre_inferior (from_tty); | |
c906108c SS |
2028 | } |
2029 | ||
2030 | /* Detach a target after doing deferred register stores. */ | |
2031 | ||
2032 | void | |
fba45db2 | 2033 | target_detach (char *args, int from_tty) |
c906108c | 2034 | { |
136d6dae VP |
2035 | struct target_ops* t; |
2036 | ||
2567c7d9 | 2037 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
2038 | /* Don't remove global breakpoints here. They're removed on |
2039 | disconnection from the target. */ | |
2040 | ; | |
2041 | else | |
2042 | /* If we're in breakpoints-always-inserted mode, have to remove | |
2043 | them before detaching. */ | |
2044 | remove_breakpoints (); | |
74960c60 | 2045 | |
136d6dae VP |
2046 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2047 | { | |
2048 | if (t->to_detach != NULL) | |
2049 | { | |
2050 | t->to_detach (t, args, from_tty); | |
947b8855 PA |
2051 | if (targetdebug) |
2052 | fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n", | |
2053 | args, from_tty); | |
136d6dae VP |
2054 | return; |
2055 | } | |
2056 | } | |
2057 | ||
2058 | internal_error (__FILE__, __LINE__, "could not find a target to detach"); | |
c906108c SS |
2059 | } |
2060 | ||
6ad8ae5c DJ |
2061 | void |
2062 | target_disconnect (char *args, int from_tty) | |
2063 | { | |
597320e7 DJ |
2064 | struct target_ops *t; |
2065 | ||
50c71eaf PA |
2066 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
2067 | are global across processes, we have to remove them before | |
2068 | disconnecting. */ | |
74960c60 VP |
2069 | remove_breakpoints (); |
2070 | ||
597320e7 DJ |
2071 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2072 | if (t->to_disconnect != NULL) | |
2073 | { | |
2074 | if (targetdebug) | |
2075 | fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n", | |
2076 | args, from_tty); | |
2077 | t->to_disconnect (t, args, from_tty); | |
2078 | return; | |
2079 | } | |
2080 | ||
2081 | tcomplain (); | |
6ad8ae5c DJ |
2082 | } |
2083 | ||
117de6a9 | 2084 | ptid_t |
47608cb1 | 2085 | target_wait (ptid_t ptid, struct target_waitstatus *status, int options) |
117de6a9 PA |
2086 | { |
2087 | struct target_ops *t; | |
2088 | ||
2089 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2090 | { | |
2091 | if (t->to_wait != NULL) | |
2092 | { | |
47608cb1 | 2093 | ptid_t retval = (*t->to_wait) (t, ptid, status, options); |
117de6a9 PA |
2094 | |
2095 | if (targetdebug) | |
2096 | { | |
2097 | char *status_string; | |
2098 | ||
2099 | status_string = target_waitstatus_to_string (status); | |
2100 | fprintf_unfiltered (gdb_stdlog, | |
2101 | "target_wait (%d, status) = %d, %s\n", | |
2102 | PIDGET (ptid), PIDGET (retval), | |
2103 | status_string); | |
2104 | xfree (status_string); | |
2105 | } | |
2106 | ||
2107 | return retval; | |
2108 | } | |
2109 | } | |
2110 | ||
2111 | noprocess (); | |
2112 | } | |
2113 | ||
2114 | char * | |
2115 | target_pid_to_str (ptid_t ptid) | |
2116 | { | |
2117 | struct target_ops *t; | |
2118 | ||
2119 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2120 | { | |
2121 | if (t->to_pid_to_str != NULL) | |
2122 | return (*t->to_pid_to_str) (t, ptid); | |
2123 | } | |
2124 | ||
2125 | return normal_pid_to_str (ptid); | |
2126 | } | |
2127 | ||
e1ac3328 VP |
2128 | void |
2129 | target_resume (ptid_t ptid, int step, enum target_signal signal) | |
2130 | { | |
28439f5e PA |
2131 | struct target_ops *t; |
2132 | ||
4e5d721f | 2133 | target_dcache_invalidate (); |
28439f5e PA |
2134 | |
2135 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2136 | { | |
2137 | if (t->to_resume != NULL) | |
2138 | { | |
2139 | t->to_resume (t, ptid, step, signal); | |
2140 | if (targetdebug) | |
2141 | fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n", | |
2142 | PIDGET (ptid), | |
2143 | step ? "step" : "continue", | |
2144 | target_signal_to_name (signal)); | |
2145 | ||
2146 | set_executing (ptid, 1); | |
2147 | set_running (ptid, 1); | |
edb3359d | 2148 | clear_inline_frame_state (ptid); |
28439f5e PA |
2149 | return; |
2150 | } | |
2151 | } | |
2152 | ||
2153 | noprocess (); | |
e1ac3328 | 2154 | } |
ee057212 DJ |
2155 | /* Look through the list of possible targets for a target that can |
2156 | follow forks. */ | |
2157 | ||
2158 | int | |
2159 | target_follow_fork (int follow_child) | |
2160 | { | |
2161 | struct target_ops *t; | |
2162 | ||
2163 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2164 | { | |
2165 | if (t->to_follow_fork != NULL) | |
2166 | { | |
2167 | int retval = t->to_follow_fork (t, follow_child); | |
2168 | if (targetdebug) | |
2169 | fprintf_unfiltered (gdb_stdlog, "target_follow_fork (%d) = %d\n", | |
2170 | follow_child, retval); | |
2171 | return retval; | |
2172 | } | |
2173 | } | |
2174 | ||
2175 | /* Some target returned a fork event, but did not know how to follow it. */ | |
2176 | internal_error (__FILE__, __LINE__, | |
2177 | "could not find a target to follow fork"); | |
2178 | } | |
2179 | ||
136d6dae VP |
2180 | void |
2181 | target_mourn_inferior (void) | |
2182 | { | |
2183 | struct target_ops *t; | |
2184 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2185 | { | |
2186 | if (t->to_mourn_inferior != NULL) | |
2187 | { | |
2188 | t->to_mourn_inferior (t); | |
947b8855 PA |
2189 | if (targetdebug) |
2190 | fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n"); | |
efbd6e75 JB |
2191 | |
2192 | /* We no longer need to keep handles on any of the object files. | |
2193 | Make sure to release them to avoid unnecessarily locking any | |
2194 | of them while we're not actually debugging. */ | |
2195 | bfd_cache_close_all (); | |
2196 | ||
136d6dae VP |
2197 | return; |
2198 | } | |
2199 | } | |
2200 | ||
2201 | internal_error (__FILE__, __LINE__, | |
2202 | "could not find a target to follow mourn inferiour"); | |
2203 | } | |
2204 | ||
424163ea DJ |
2205 | /* Look for a target which can describe architectural features, starting |
2206 | from TARGET. If we find one, return its description. */ | |
2207 | ||
2208 | const struct target_desc * | |
2209 | target_read_description (struct target_ops *target) | |
2210 | { | |
2211 | struct target_ops *t; | |
2212 | ||
2213 | for (t = target; t != NULL; t = t->beneath) | |
2214 | if (t->to_read_description != NULL) | |
2215 | { | |
2216 | const struct target_desc *tdesc; | |
2217 | ||
2218 | tdesc = t->to_read_description (t); | |
2219 | if (tdesc) | |
2220 | return tdesc; | |
2221 | } | |
2222 | ||
2223 | return NULL; | |
2224 | } | |
2225 | ||
08388c79 DE |
2226 | /* The default implementation of to_search_memory. |
2227 | This implements a basic search of memory, reading target memory and | |
2228 | performing the search here (as opposed to performing the search in on the | |
2229 | target side with, for example, gdbserver). */ | |
2230 | ||
2231 | int | |
2232 | simple_search_memory (struct target_ops *ops, | |
2233 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2234 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2235 | CORE_ADDR *found_addrp) | |
2236 | { | |
2237 | /* NOTE: also defined in find.c testcase. */ | |
2238 | #define SEARCH_CHUNK_SIZE 16000 | |
2239 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
2240 | /* Buffer to hold memory contents for searching. */ | |
2241 | gdb_byte *search_buf; | |
2242 | unsigned search_buf_size; | |
2243 | struct cleanup *old_cleanups; | |
2244 | ||
2245 | search_buf_size = chunk_size + pattern_len - 1; | |
2246 | ||
2247 | /* No point in trying to allocate a buffer larger than the search space. */ | |
2248 | if (search_space_len < search_buf_size) | |
2249 | search_buf_size = search_space_len; | |
2250 | ||
2251 | search_buf = malloc (search_buf_size); | |
2252 | if (search_buf == NULL) | |
5e1471f5 | 2253 | error (_("Unable to allocate memory to perform the search.")); |
08388c79 DE |
2254 | old_cleanups = make_cleanup (free_current_contents, &search_buf); |
2255 | ||
2256 | /* Prime the search buffer. */ | |
2257 | ||
2258 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2259 | search_buf, start_addr, search_buf_size) != search_buf_size) | |
2260 | { | |
5e1471f5 | 2261 | warning (_("Unable to access target memory at %s, halting search."), |
08388c79 DE |
2262 | hex_string (start_addr)); |
2263 | do_cleanups (old_cleanups); | |
2264 | return -1; | |
2265 | } | |
2266 | ||
2267 | /* Perform the search. | |
2268 | ||
2269 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
2270 | When we've scanned N bytes we copy the trailing bytes to the start and | |
2271 | read in another N bytes. */ | |
2272 | ||
2273 | while (search_space_len >= pattern_len) | |
2274 | { | |
2275 | gdb_byte *found_ptr; | |
2276 | unsigned nr_search_bytes = min (search_space_len, search_buf_size); | |
2277 | ||
2278 | found_ptr = memmem (search_buf, nr_search_bytes, | |
2279 | pattern, pattern_len); | |
2280 | ||
2281 | if (found_ptr != NULL) | |
2282 | { | |
2283 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
2284 | *found_addrp = found_addr; | |
2285 | do_cleanups (old_cleanups); | |
2286 | return 1; | |
2287 | } | |
2288 | ||
2289 | /* Not found in this chunk, skip to next chunk. */ | |
2290 | ||
2291 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
2292 | if (search_space_len >= chunk_size) | |
2293 | search_space_len -= chunk_size; | |
2294 | else | |
2295 | search_space_len = 0; | |
2296 | ||
2297 | if (search_space_len >= pattern_len) | |
2298 | { | |
2299 | unsigned keep_len = search_buf_size - chunk_size; | |
2300 | CORE_ADDR read_addr = start_addr + keep_len; | |
2301 | int nr_to_read; | |
2302 | ||
2303 | /* Copy the trailing part of the previous iteration to the front | |
2304 | of the buffer for the next iteration. */ | |
2305 | gdb_assert (keep_len == pattern_len - 1); | |
2306 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
2307 | ||
2308 | nr_to_read = min (search_space_len - keep_len, chunk_size); | |
2309 | ||
2310 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2311 | search_buf + keep_len, read_addr, | |
2312 | nr_to_read) != nr_to_read) | |
2313 | { | |
5e1471f5 | 2314 | warning (_("Unable to access target memory at %s, halting search."), |
08388c79 DE |
2315 | hex_string (read_addr)); |
2316 | do_cleanups (old_cleanups); | |
2317 | return -1; | |
2318 | } | |
2319 | ||
2320 | start_addr += chunk_size; | |
2321 | } | |
2322 | } | |
2323 | ||
2324 | /* Not found. */ | |
2325 | ||
2326 | do_cleanups (old_cleanups); | |
2327 | return 0; | |
2328 | } | |
2329 | ||
2330 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the | |
2331 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2332 | ||
2333 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2334 | requiring halting of the search (e.g. memory read error). | |
2335 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2336 | ||
2337 | int | |
2338 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2339 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2340 | CORE_ADDR *found_addrp) | |
2341 | { | |
2342 | struct target_ops *t; | |
2343 | int found; | |
2344 | ||
2345 | /* We don't use INHERIT to set current_target.to_search_memory, | |
2346 | so we have to scan the target stack and handle targetdebug | |
2347 | ourselves. */ | |
2348 | ||
2349 | if (targetdebug) | |
2350 | fprintf_unfiltered (gdb_stdlog, "target_search_memory (%s, ...)\n", | |
2351 | hex_string (start_addr)); | |
2352 | ||
2353 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2354 | if (t->to_search_memory != NULL) | |
2355 | break; | |
2356 | ||
2357 | if (t != NULL) | |
2358 | { | |
2359 | found = t->to_search_memory (t, start_addr, search_space_len, | |
2360 | pattern, pattern_len, found_addrp); | |
2361 | } | |
2362 | else | |
2363 | { | |
2364 | /* If a special version of to_search_memory isn't available, use the | |
2365 | simple version. */ | |
c35b1492 | 2366 | found = simple_search_memory (current_target.beneath, |
08388c79 DE |
2367 | start_addr, search_space_len, |
2368 | pattern, pattern_len, found_addrp); | |
2369 | } | |
2370 | ||
2371 | if (targetdebug) | |
2372 | fprintf_unfiltered (gdb_stdlog, " = %d\n", found); | |
2373 | ||
2374 | return found; | |
2375 | } | |
2376 | ||
8edfe269 DJ |
2377 | /* Look through the currently pushed targets. If none of them will |
2378 | be able to restart the currently running process, issue an error | |
2379 | message. */ | |
2380 | ||
2381 | void | |
2382 | target_require_runnable (void) | |
2383 | { | |
2384 | struct target_ops *t; | |
2385 | ||
2386 | for (t = target_stack; t != NULL; t = t->beneath) | |
2387 | { | |
2388 | /* If this target knows how to create a new program, then | |
2389 | assume we will still be able to after killing the current | |
2390 | one. Either killing and mourning will not pop T, or else | |
2391 | find_default_run_target will find it again. */ | |
2392 | if (t->to_create_inferior != NULL) | |
2393 | return; | |
2394 | ||
2395 | /* Do not worry about thread_stratum targets that can not | |
2396 | create inferiors. Assume they will be pushed again if | |
2397 | necessary, and continue to the process_stratum. */ | |
85e747d2 UW |
2398 | if (t->to_stratum == thread_stratum |
2399 | || t->to_stratum == arch_stratum) | |
8edfe269 DJ |
2400 | continue; |
2401 | ||
2402 | error (_("\ | |
2403 | The \"%s\" target does not support \"run\". Try \"help target\" or \"continue\"."), | |
2404 | t->to_shortname); | |
2405 | } | |
2406 | ||
2407 | /* This function is only called if the target is running. In that | |
2408 | case there should have been a process_stratum target and it | |
2409 | should either know how to create inferiors, or not... */ | |
2410 | internal_error (__FILE__, __LINE__, "No targets found"); | |
2411 | } | |
2412 | ||
c906108c SS |
2413 | /* Look through the list of possible targets for a target that can |
2414 | execute a run or attach command without any other data. This is | |
2415 | used to locate the default process stratum. | |
2416 | ||
5f667f2d PA |
2417 | If DO_MESG is not NULL, the result is always valid (error() is |
2418 | called for errors); else, return NULL on error. */ | |
c906108c SS |
2419 | |
2420 | static struct target_ops * | |
fba45db2 | 2421 | find_default_run_target (char *do_mesg) |
c906108c SS |
2422 | { |
2423 | struct target_ops **t; | |
2424 | struct target_ops *runable = NULL; | |
2425 | int count; | |
2426 | ||
2427 | count = 0; | |
2428 | ||
2429 | for (t = target_structs; t < target_structs + target_struct_size; | |
2430 | ++t) | |
2431 | { | |
c5aa993b | 2432 | if ((*t)->to_can_run && target_can_run (*t)) |
c906108c SS |
2433 | { |
2434 | runable = *t; | |
2435 | ++count; | |
2436 | } | |
2437 | } | |
2438 | ||
2439 | if (count != 1) | |
5f667f2d PA |
2440 | { |
2441 | if (do_mesg) | |
2442 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
2443 | else | |
2444 | return NULL; | |
2445 | } | |
c906108c SS |
2446 | |
2447 | return runable; | |
2448 | } | |
2449 | ||
2450 | void | |
136d6dae | 2451 | find_default_attach (struct target_ops *ops, char *args, int from_tty) |
c906108c SS |
2452 | { |
2453 | struct target_ops *t; | |
2454 | ||
c5aa993b | 2455 | t = find_default_run_target ("attach"); |
136d6dae | 2456 | (t->to_attach) (t, args, from_tty); |
c906108c SS |
2457 | return; |
2458 | } | |
2459 | ||
c906108c | 2460 | void |
136d6dae VP |
2461 | find_default_create_inferior (struct target_ops *ops, |
2462 | char *exec_file, char *allargs, char **env, | |
c27cda74 | 2463 | int from_tty) |
c906108c SS |
2464 | { |
2465 | struct target_ops *t; | |
2466 | ||
c5aa993b | 2467 | t = find_default_run_target ("run"); |
136d6dae | 2468 | (t->to_create_inferior) (t, exec_file, allargs, env, from_tty); |
c906108c SS |
2469 | return; |
2470 | } | |
2471 | ||
2c0b251b | 2472 | static int |
b84876c2 PA |
2473 | find_default_can_async_p (void) |
2474 | { | |
2475 | struct target_ops *t; | |
2476 | ||
5f667f2d PA |
2477 | /* This may be called before the target is pushed on the stack; |
2478 | look for the default process stratum. If there's none, gdb isn't | |
2479 | configured with a native debugger, and target remote isn't | |
2480 | connected yet. */ | |
2481 | t = find_default_run_target (NULL); | |
2482 | if (t && t->to_can_async_p) | |
b84876c2 PA |
2483 | return (t->to_can_async_p) (); |
2484 | return 0; | |
2485 | } | |
2486 | ||
2c0b251b | 2487 | static int |
b84876c2 PA |
2488 | find_default_is_async_p (void) |
2489 | { | |
2490 | struct target_ops *t; | |
2491 | ||
5f667f2d PA |
2492 | /* This may be called before the target is pushed on the stack; |
2493 | look for the default process stratum. If there's none, gdb isn't | |
2494 | configured with a native debugger, and target remote isn't | |
2495 | connected yet. */ | |
2496 | t = find_default_run_target (NULL); | |
2497 | if (t && t->to_is_async_p) | |
b84876c2 PA |
2498 | return (t->to_is_async_p) (); |
2499 | return 0; | |
2500 | } | |
2501 | ||
2c0b251b | 2502 | static int |
9908b566 VP |
2503 | find_default_supports_non_stop (void) |
2504 | { | |
2505 | struct target_ops *t; | |
2506 | ||
2507 | t = find_default_run_target (NULL); | |
2508 | if (t && t->to_supports_non_stop) | |
2509 | return (t->to_supports_non_stop) (); | |
2510 | return 0; | |
2511 | } | |
2512 | ||
2513 | int | |
2c0b251b | 2514 | target_supports_non_stop (void) |
9908b566 VP |
2515 | { |
2516 | struct target_ops *t; | |
2517 | for (t = ¤t_target; t != NULL; t = t->beneath) | |
2518 | if (t->to_supports_non_stop) | |
2519 | return t->to_supports_non_stop (); | |
2520 | ||
2521 | return 0; | |
2522 | } | |
2523 | ||
2524 | ||
07e059b5 VP |
2525 | char * |
2526 | target_get_osdata (const char *type) | |
2527 | { | |
2528 | char *document; | |
2529 | struct target_ops *t; | |
2530 | ||
739ef7fb PA |
2531 | /* If we're already connected to something that can get us OS |
2532 | related data, use it. Otherwise, try using the native | |
2533 | target. */ | |
2534 | if (current_target.to_stratum >= process_stratum) | |
6d097e65 | 2535 | t = current_target.beneath; |
739ef7fb PA |
2536 | else |
2537 | t = find_default_run_target ("get OS data"); | |
07e059b5 VP |
2538 | |
2539 | if (!t) | |
2540 | return NULL; | |
2541 | ||
6d097e65 | 2542 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
2543 | } |
2544 | ||
e0d24f8d WZ |
2545 | static int |
2546 | default_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
2547 | { | |
ffe5a37e | 2548 | return (len <= gdbarch_ptr_bit (target_gdbarch) / TARGET_CHAR_BIT); |
ccaa32c7 GS |
2549 | } |
2550 | ||
5009afc5 AS |
2551 | static int |
2552 | default_watchpoint_addr_within_range (struct target_ops *target, | |
2553 | CORE_ADDR addr, | |
2554 | CORE_ADDR start, int length) | |
2555 | { | |
2556 | return addr >= start && addr < start + length; | |
2557 | } | |
2558 | ||
c2250ad1 UW |
2559 | static struct gdbarch * |
2560 | default_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
2561 | { | |
2562 | return target_gdbarch; | |
2563 | } | |
2564 | ||
c906108c | 2565 | static int |
fba45db2 | 2566 | return_zero (void) |
c906108c SS |
2567 | { |
2568 | return 0; | |
2569 | } | |
2570 | ||
2571 | static int | |
fba45db2 | 2572 | return_one (void) |
c906108c SS |
2573 | { |
2574 | return 1; | |
2575 | } | |
2576 | ||
ccaa32c7 GS |
2577 | static int |
2578 | return_minus_one (void) | |
2579 | { | |
2580 | return -1; | |
2581 | } | |
2582 | ||
7a292a7a SS |
2583 | /* Find a single runnable target in the stack and return it. If for |
2584 | some reason there is more than one, return NULL. */ | |
2585 | ||
2586 | struct target_ops * | |
fba45db2 | 2587 | find_run_target (void) |
7a292a7a SS |
2588 | { |
2589 | struct target_ops **t; | |
2590 | struct target_ops *runable = NULL; | |
2591 | int count; | |
c5aa993b | 2592 | |
7a292a7a | 2593 | count = 0; |
c5aa993b | 2594 | |
7a292a7a SS |
2595 | for (t = target_structs; t < target_structs + target_struct_size; ++t) |
2596 | { | |
c5aa993b | 2597 | if ((*t)->to_can_run && target_can_run (*t)) |
7a292a7a SS |
2598 | { |
2599 | runable = *t; | |
2600 | ++count; | |
2601 | } | |
2602 | } | |
c5aa993b | 2603 | |
7a292a7a SS |
2604 | return (count == 1 ? runable : NULL); |
2605 | } | |
2606 | ||
ed9a39eb JM |
2607 | /* Find a single core_stratum target in the list of targets and return it. |
2608 | If for some reason there is more than one, return NULL. */ | |
2609 | ||
c906108c | 2610 | struct target_ops * |
fba45db2 | 2611 | find_core_target (void) |
c906108c SS |
2612 | { |
2613 | struct target_ops **t; | |
2614 | struct target_ops *runable = NULL; | |
2615 | int count; | |
c5aa993b | 2616 | |
c906108c | 2617 | count = 0; |
c5aa993b | 2618 | |
c906108c SS |
2619 | for (t = target_structs; t < target_structs + target_struct_size; |
2620 | ++t) | |
2621 | { | |
2622 | if ((*t)->to_stratum == core_stratum) | |
2623 | { | |
2624 | runable = *t; | |
2625 | ++count; | |
2626 | } | |
2627 | } | |
c5aa993b JM |
2628 | |
2629 | return (count == 1 ? runable : NULL); | |
c906108c | 2630 | } |
ed9a39eb JM |
2631 | |
2632 | /* | |
2633 | * Find the next target down the stack from the specified target. | |
2634 | */ | |
2635 | ||
2636 | struct target_ops * | |
fba45db2 | 2637 | find_target_beneath (struct target_ops *t) |
ed9a39eb | 2638 | { |
258b763a | 2639 | return t->beneath; |
ed9a39eb JM |
2640 | } |
2641 | ||
c906108c SS |
2642 | \f |
2643 | /* The inferior process has died. Long live the inferior! */ | |
2644 | ||
2645 | void | |
fba45db2 | 2646 | generic_mourn_inferior (void) |
c906108c | 2647 | { |
7f9f62ba | 2648 | ptid_t ptid; |
c906108c | 2649 | |
7f9f62ba | 2650 | ptid = inferior_ptid; |
39f77062 | 2651 | inferior_ptid = null_ptid; |
7f9f62ba PA |
2652 | |
2653 | if (!ptid_equal (ptid, null_ptid)) | |
2654 | { | |
2655 | int pid = ptid_get_pid (ptid); | |
2656 | delete_inferior (pid); | |
2657 | } | |
2658 | ||
c906108c SS |
2659 | breakpoint_init_inferior (inf_exited); |
2660 | registers_changed (); | |
2661 | ||
c906108c SS |
2662 | reopen_exec_file (); |
2663 | reinit_frame_cache (); | |
2664 | ||
9a4105ab AC |
2665 | if (deprecated_detach_hook) |
2666 | deprecated_detach_hook (); | |
c906108c SS |
2667 | } |
2668 | \f | |
8807d78b | 2669 | /* Helper function for child_wait and the derivatives of child_wait. |
c906108c SS |
2670 | HOSTSTATUS is the waitstatus from wait() or the equivalent; store our |
2671 | translation of that in OURSTATUS. */ | |
2672 | void | |
fba45db2 | 2673 | store_waitstatus (struct target_waitstatus *ourstatus, int hoststatus) |
c906108c | 2674 | { |
c906108c SS |
2675 | if (WIFEXITED (hoststatus)) |
2676 | { | |
2677 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
2678 | ourstatus->value.integer = WEXITSTATUS (hoststatus); | |
2679 | } | |
2680 | else if (!WIFSTOPPED (hoststatus)) | |
2681 | { | |
2682 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
2683 | ourstatus->value.sig = target_signal_from_host (WTERMSIG (hoststatus)); | |
2684 | } | |
2685 | else | |
2686 | { | |
2687 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
2688 | ourstatus->value.sig = target_signal_from_host (WSTOPSIG (hoststatus)); | |
2689 | } | |
2690 | } | |
2691 | \f | |
fd0a2a6f MK |
2692 | /* Convert a normal process ID to a string. Returns the string in a |
2693 | static buffer. */ | |
c906108c SS |
2694 | |
2695 | char * | |
39f77062 | 2696 | normal_pid_to_str (ptid_t ptid) |
c906108c | 2697 | { |
fd0a2a6f | 2698 | static char buf[32]; |
c906108c | 2699 | |
5fff8fc0 | 2700 | xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid)); |
c906108c SS |
2701 | return buf; |
2702 | } | |
2703 | ||
2c0b251b | 2704 | static char * |
117de6a9 PA |
2705 | dummy_pid_to_str (struct target_ops *ops, ptid_t ptid) |
2706 | { | |
2707 | return normal_pid_to_str (ptid); | |
2708 | } | |
2709 | ||
be4d1333 | 2710 | /* Error-catcher for target_find_memory_regions */ |
be4d1333 MS |
2711 | static int dummy_find_memory_regions (int (*ignore1) (), void *ignore2) |
2712 | { | |
8a3fe4f8 | 2713 | error (_("No target.")); |
be4d1333 MS |
2714 | return 0; |
2715 | } | |
2716 | ||
2717 | /* Error-catcher for target_make_corefile_notes */ | |
be4d1333 MS |
2718 | static char * dummy_make_corefile_notes (bfd *ignore1, int *ignore2) |
2719 | { | |
8a3fe4f8 | 2720 | error (_("No target.")); |
be4d1333 MS |
2721 | return NULL; |
2722 | } | |
2723 | ||
c906108c SS |
2724 | /* Set up the handful of non-empty slots needed by the dummy target |
2725 | vector. */ | |
2726 | ||
2727 | static void | |
fba45db2 | 2728 | init_dummy_target (void) |
c906108c SS |
2729 | { |
2730 | dummy_target.to_shortname = "None"; | |
2731 | dummy_target.to_longname = "None"; | |
2732 | dummy_target.to_doc = ""; | |
2733 | dummy_target.to_attach = find_default_attach; | |
136d6dae VP |
2734 | dummy_target.to_detach = |
2735 | (void (*)(struct target_ops *, char *, int))target_ignore; | |
c906108c | 2736 | dummy_target.to_create_inferior = find_default_create_inferior; |
b84876c2 PA |
2737 | dummy_target.to_can_async_p = find_default_can_async_p; |
2738 | dummy_target.to_is_async_p = find_default_is_async_p; | |
9908b566 | 2739 | dummy_target.to_supports_non_stop = find_default_supports_non_stop; |
117de6a9 | 2740 | dummy_target.to_pid_to_str = dummy_pid_to_str; |
c906108c | 2741 | dummy_target.to_stratum = dummy_stratum; |
be4d1333 MS |
2742 | dummy_target.to_find_memory_regions = dummy_find_memory_regions; |
2743 | dummy_target.to_make_corefile_notes = dummy_make_corefile_notes; | |
0b603eba | 2744 | dummy_target.to_xfer_partial = default_xfer_partial; |
c35b1492 PA |
2745 | dummy_target.to_has_all_memory = (int (*) (struct target_ops *)) return_zero; |
2746 | dummy_target.to_has_memory = (int (*) (struct target_ops *)) return_zero; | |
2747 | dummy_target.to_has_stack = (int (*) (struct target_ops *)) return_zero; | |
2748 | dummy_target.to_has_registers = (int (*) (struct target_ops *)) return_zero; | |
2749 | dummy_target.to_has_execution = (int (*) (struct target_ops *)) return_zero; | |
c906108c SS |
2750 | dummy_target.to_magic = OPS_MAGIC; |
2751 | } | |
c906108c | 2752 | \f |
c906108c | 2753 | static void |
fba45db2 | 2754 | debug_to_open (char *args, int from_tty) |
c906108c SS |
2755 | { |
2756 | debug_target.to_open (args, from_tty); | |
2757 | ||
96baa820 | 2758 | fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty); |
c906108c SS |
2759 | } |
2760 | ||
f1c07ab0 AC |
2761 | void |
2762 | target_close (struct target_ops *targ, int quitting) | |
2763 | { | |
2764 | if (targ->to_xclose != NULL) | |
2765 | targ->to_xclose (targ, quitting); | |
2766 | else if (targ->to_close != NULL) | |
2767 | targ->to_close (quitting); | |
947b8855 PA |
2768 | |
2769 | if (targetdebug) | |
2770 | fprintf_unfiltered (gdb_stdlog, "target_close (%d)\n", quitting); | |
f1c07ab0 AC |
2771 | } |
2772 | ||
136d6dae VP |
2773 | void |
2774 | target_attach (char *args, int from_tty) | |
2775 | { | |
2776 | struct target_ops *t; | |
2777 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2778 | { | |
2779 | if (t->to_attach != NULL) | |
2780 | { | |
2781 | t->to_attach (t, args, from_tty); | |
947b8855 PA |
2782 | if (targetdebug) |
2783 | fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n", | |
2784 | args, from_tty); | |
136d6dae VP |
2785 | return; |
2786 | } | |
2787 | } | |
2788 | ||
2789 | internal_error (__FILE__, __LINE__, | |
2790 | "could not find a target to attach"); | |
2791 | } | |
2792 | ||
28439f5e PA |
2793 | int |
2794 | target_thread_alive (ptid_t ptid) | |
c906108c | 2795 | { |
28439f5e PA |
2796 | struct target_ops *t; |
2797 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2798 | { | |
2799 | if (t->to_thread_alive != NULL) | |
2800 | { | |
2801 | int retval; | |
c906108c | 2802 | |
28439f5e PA |
2803 | retval = t->to_thread_alive (t, ptid); |
2804 | if (targetdebug) | |
2805 | fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n", | |
2806 | PIDGET (ptid), retval); | |
2807 | ||
2808 | return retval; | |
2809 | } | |
2810 | } | |
2811 | ||
2812 | return 0; | |
2813 | } | |
2814 | ||
2815 | void | |
2816 | target_find_new_threads (void) | |
2817 | { | |
2818 | struct target_ops *t; | |
2819 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2820 | { | |
2821 | if (t->to_find_new_threads != NULL) | |
2822 | { | |
2823 | t->to_find_new_threads (t); | |
2824 | if (targetdebug) | |
2825 | fprintf_unfiltered (gdb_stdlog, "target_find_new_threads ()\n"); | |
2826 | ||
2827 | return; | |
2828 | } | |
2829 | } | |
c906108c SS |
2830 | } |
2831 | ||
c906108c | 2832 | static void |
28439f5e | 2833 | debug_to_post_attach (int pid) |
c906108c | 2834 | { |
28439f5e | 2835 | debug_target.to_post_attach (pid); |
c906108c | 2836 | |
28439f5e | 2837 | fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid); |
c906108c SS |
2838 | } |
2839 | ||
f00150c9 DE |
2840 | /* Return a pretty printed form of target_waitstatus. |
2841 | Space for the result is malloc'd, caller must free. */ | |
c906108c | 2842 | |
f00150c9 DE |
2843 | char * |
2844 | target_waitstatus_to_string (const struct target_waitstatus *ws) | |
2845 | { | |
2846 | const char *kind_str = "status->kind = "; | |
c906108c | 2847 | |
f00150c9 | 2848 | switch (ws->kind) |
c906108c SS |
2849 | { |
2850 | case TARGET_WAITKIND_EXITED: | |
f00150c9 DE |
2851 | return xstrprintf ("%sexited, status = %d", |
2852 | kind_str, ws->value.integer); | |
c906108c | 2853 | case TARGET_WAITKIND_STOPPED: |
f00150c9 DE |
2854 | return xstrprintf ("%sstopped, signal = %s", |
2855 | kind_str, target_signal_to_name (ws->value.sig)); | |
c906108c | 2856 | case TARGET_WAITKIND_SIGNALLED: |
f00150c9 DE |
2857 | return xstrprintf ("%ssignalled, signal = %s", |
2858 | kind_str, target_signal_to_name (ws->value.sig)); | |
c906108c | 2859 | case TARGET_WAITKIND_LOADED: |
f00150c9 | 2860 | return xstrprintf ("%sloaded", kind_str); |
c906108c | 2861 | case TARGET_WAITKIND_FORKED: |
f00150c9 | 2862 | return xstrprintf ("%sforked", kind_str); |
c906108c | 2863 | case TARGET_WAITKIND_VFORKED: |
f00150c9 | 2864 | return xstrprintf ("%svforked", kind_str); |
c906108c | 2865 | case TARGET_WAITKIND_EXECD: |
f00150c9 DE |
2866 | return xstrprintf ("%sexecd", kind_str); |
2867 | case TARGET_WAITKIND_SYSCALL_ENTRY: | |
2868 | return xstrprintf ("%ssyscall-entry", kind_str); | |
2869 | case TARGET_WAITKIND_SYSCALL_RETURN: | |
2870 | return xstrprintf ("%ssyscall-return", kind_str); | |
c906108c | 2871 | case TARGET_WAITKIND_SPURIOUS: |
f00150c9 DE |
2872 | return xstrprintf ("%sspurious", kind_str); |
2873 | case TARGET_WAITKIND_IGNORE: | |
2874 | return xstrprintf ("%signore", kind_str); | |
2875 | case TARGET_WAITKIND_NO_HISTORY: | |
2876 | return xstrprintf ("%sno-history", kind_str); | |
c906108c | 2877 | default: |
f00150c9 | 2878 | return xstrprintf ("%sunknown???", kind_str); |
c906108c | 2879 | } |
f00150c9 DE |
2880 | } |
2881 | ||
bf0c5130 | 2882 | static void |
56be3814 UW |
2883 | debug_print_register (const char * func, |
2884 | struct regcache *regcache, int regno) | |
bf0c5130 | 2885 | { |
f8d29908 | 2886 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
bf0c5130 | 2887 | fprintf_unfiltered (gdb_stdlog, "%s ", func); |
f8d29908 | 2888 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) |
f8d29908 UW |
2889 | && gdbarch_register_name (gdbarch, regno) != NULL |
2890 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') | |
2891 | fprintf_unfiltered (gdb_stdlog, "(%s)", | |
2892 | gdbarch_register_name (gdbarch, regno)); | |
bf0c5130 AC |
2893 | else |
2894 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
0ff58721 | 2895 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) |
bf0c5130 | 2896 | { |
e17a4113 | 2897 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
f8d29908 | 2898 | int i, size = register_size (gdbarch, regno); |
d9d9c31f | 2899 | unsigned char buf[MAX_REGISTER_SIZE]; |
0ff58721 | 2900 | regcache_raw_collect (regcache, regno, buf); |
bf0c5130 | 2901 | fprintf_unfiltered (gdb_stdlog, " = "); |
81c4a259 | 2902 | for (i = 0; i < size; i++) |
bf0c5130 AC |
2903 | { |
2904 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
2905 | } | |
81c4a259 | 2906 | if (size <= sizeof (LONGEST)) |
bf0c5130 | 2907 | { |
e17a4113 | 2908 | ULONGEST val = extract_unsigned_integer (buf, size, byte_order); |
0b1553bc UW |
2909 | fprintf_unfiltered (gdb_stdlog, " %s %s", |
2910 | core_addr_to_string_nz (val), plongest (val)); | |
bf0c5130 AC |
2911 | } |
2912 | } | |
2913 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
2914 | } | |
2915 | ||
28439f5e PA |
2916 | void |
2917 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 2918 | { |
28439f5e PA |
2919 | struct target_ops *t; |
2920 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2921 | { | |
2922 | if (t->to_fetch_registers != NULL) | |
2923 | { | |
2924 | t->to_fetch_registers (t, regcache, regno); | |
2925 | if (targetdebug) | |
2926 | debug_print_register ("target_fetch_registers", regcache, regno); | |
2927 | return; | |
2928 | } | |
2929 | } | |
c906108c SS |
2930 | } |
2931 | ||
28439f5e PA |
2932 | void |
2933 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 2934 | { |
28439f5e PA |
2935 | |
2936 | struct target_ops *t; | |
2937 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2938 | { | |
2939 | if (t->to_store_registers != NULL) | |
2940 | { | |
2941 | t->to_store_registers (t, regcache, regno); | |
2942 | if (targetdebug) | |
2943 | { | |
2944 | debug_print_register ("target_store_registers", regcache, regno); | |
2945 | } | |
2946 | return; | |
2947 | } | |
2948 | } | |
2949 | ||
2950 | noprocess (); | |
c906108c SS |
2951 | } |
2952 | ||
2953 | static void | |
316f2060 | 2954 | debug_to_prepare_to_store (struct regcache *regcache) |
c906108c | 2955 | { |
316f2060 | 2956 | debug_target.to_prepare_to_store (regcache); |
c906108c | 2957 | |
96baa820 | 2958 | fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n"); |
c906108c SS |
2959 | } |
2960 | ||
2961 | static int | |
961cb7b5 | 2962 | deprecated_debug_xfer_memory (CORE_ADDR memaddr, bfd_byte *myaddr, int len, |
c8e73a31 AC |
2963 | int write, struct mem_attrib *attrib, |
2964 | struct target_ops *target) | |
c906108c SS |
2965 | { |
2966 | int retval; | |
2967 | ||
c8e73a31 AC |
2968 | retval = debug_target.deprecated_xfer_memory (memaddr, myaddr, len, write, |
2969 | attrib, target); | |
c906108c | 2970 | |
96baa820 | 2971 | fprintf_unfiltered (gdb_stdlog, |
53b71562 | 2972 | "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d", |
5af949e3 UW |
2973 | paddress (target_gdbarch, memaddr), len, |
2974 | write ? "write" : "read", retval); | |
c906108c | 2975 | |
c906108c SS |
2976 | if (retval > 0) |
2977 | { | |
2978 | int i; | |
2979 | ||
96baa820 | 2980 | fputs_unfiltered (", bytes =", gdb_stdlog); |
c906108c SS |
2981 | for (i = 0; i < retval; i++) |
2982 | { | |
53b71562 | 2983 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
333dabeb DJ |
2984 | { |
2985 | if (targetdebug < 2 && i > 0) | |
2986 | { | |
2987 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
2988 | break; | |
2989 | } | |
2990 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
2991 | } | |
2bc416ba | 2992 | |
96baa820 | 2993 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
c906108c SS |
2994 | } |
2995 | } | |
2996 | ||
96baa820 | 2997 | fputc_unfiltered ('\n', gdb_stdlog); |
c906108c SS |
2998 | |
2999 | return retval; | |
3000 | } | |
3001 | ||
3002 | static void | |
fba45db2 | 3003 | debug_to_files_info (struct target_ops *target) |
c906108c SS |
3004 | { |
3005 | debug_target.to_files_info (target); | |
3006 | ||
96baa820 | 3007 | fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n"); |
c906108c SS |
3008 | } |
3009 | ||
3010 | static int | |
a6d9a66e UW |
3011 | debug_to_insert_breakpoint (struct gdbarch *gdbarch, |
3012 | struct bp_target_info *bp_tgt) | |
c906108c SS |
3013 | { |
3014 | int retval; | |
3015 | ||
a6d9a66e | 3016 | retval = debug_target.to_insert_breakpoint (gdbarch, bp_tgt); |
c906108c | 3017 | |
96baa820 | 3018 | fprintf_unfiltered (gdb_stdlog, |
104c1213 | 3019 | "target_insert_breakpoint (0x%lx, xxx) = %ld\n", |
8181d85f | 3020 | (unsigned long) bp_tgt->placed_address, |
104c1213 | 3021 | (unsigned long) retval); |
c906108c SS |
3022 | return retval; |
3023 | } | |
3024 | ||
3025 | static int | |
a6d9a66e UW |
3026 | debug_to_remove_breakpoint (struct gdbarch *gdbarch, |
3027 | struct bp_target_info *bp_tgt) | |
c906108c SS |
3028 | { |
3029 | int retval; | |
3030 | ||
a6d9a66e | 3031 | retval = debug_target.to_remove_breakpoint (gdbarch, bp_tgt); |
c906108c | 3032 | |
96baa820 | 3033 | fprintf_unfiltered (gdb_stdlog, |
104c1213 | 3034 | "target_remove_breakpoint (0x%lx, xxx) = %ld\n", |
8181d85f | 3035 | (unsigned long) bp_tgt->placed_address, |
104c1213 | 3036 | (unsigned long) retval); |
c906108c SS |
3037 | return retval; |
3038 | } | |
3039 | ||
ccaa32c7 GS |
3040 | static int |
3041 | debug_to_can_use_hw_breakpoint (int type, int cnt, int from_tty) | |
3042 | { | |
3043 | int retval; | |
3044 | ||
3045 | retval = debug_target.to_can_use_hw_breakpoint (type, cnt, from_tty); | |
3046 | ||
3047 | fprintf_unfiltered (gdb_stdlog, | |
3048 | "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n", | |
3049 | (unsigned long) type, | |
3050 | (unsigned long) cnt, | |
3051 | (unsigned long) from_tty, | |
3052 | (unsigned long) retval); | |
3053 | return retval; | |
3054 | } | |
3055 | ||
e0d24f8d WZ |
3056 | static int |
3057 | debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
3058 | { | |
3059 | CORE_ADDR retval; | |
3060 | ||
3061 | retval = debug_target.to_region_ok_for_hw_watchpoint (addr, len); | |
3062 | ||
3063 | fprintf_unfiltered (gdb_stdlog, | |
d92524f1 | 3064 | "target_region_ok_for_hw_watchpoint (%ld, %ld) = 0x%lx\n", |
e0d24f8d WZ |
3065 | (unsigned long) addr, |
3066 | (unsigned long) len, | |
3067 | (unsigned long) retval); | |
3068 | return retval; | |
3069 | } | |
3070 | ||
ccaa32c7 GS |
3071 | static int |
3072 | debug_to_stopped_by_watchpoint (void) | |
3073 | { | |
3074 | int retval; | |
3075 | ||
3076 | retval = debug_target.to_stopped_by_watchpoint (); | |
3077 | ||
3078 | fprintf_unfiltered (gdb_stdlog, | |
d92524f1 | 3079 | "target_stopped_by_watchpoint () = %ld\n", |
ccaa32c7 GS |
3080 | (unsigned long) retval); |
3081 | return retval; | |
3082 | } | |
3083 | ||
4aa7a7f5 JJ |
3084 | static int |
3085 | debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr) | |
ccaa32c7 | 3086 | { |
4aa7a7f5 | 3087 | int retval; |
ccaa32c7 | 3088 | |
4aa7a7f5 | 3089 | retval = debug_target.to_stopped_data_address (target, addr); |
ccaa32c7 GS |
3090 | |
3091 | fprintf_unfiltered (gdb_stdlog, | |
4aa7a7f5 JJ |
3092 | "target_stopped_data_address ([0x%lx]) = %ld\n", |
3093 | (unsigned long)*addr, | |
3094 | (unsigned long)retval); | |
ccaa32c7 GS |
3095 | return retval; |
3096 | } | |
3097 | ||
5009afc5 AS |
3098 | static int |
3099 | debug_to_watchpoint_addr_within_range (struct target_ops *target, | |
3100 | CORE_ADDR addr, | |
3101 | CORE_ADDR start, int length) | |
3102 | { | |
3103 | int retval; | |
3104 | ||
3105 | retval = debug_target.to_watchpoint_addr_within_range (target, addr, | |
3106 | start, length); | |
3107 | ||
3108 | fprintf_filtered (gdb_stdlog, | |
3109 | "target_watchpoint_addr_within_range (0x%lx, 0x%lx, %d) = %d\n", | |
3110 | (unsigned long) addr, (unsigned long) start, length, | |
3111 | retval); | |
3112 | return retval; | |
3113 | } | |
3114 | ||
ccaa32c7 | 3115 | static int |
a6d9a66e UW |
3116 | debug_to_insert_hw_breakpoint (struct gdbarch *gdbarch, |
3117 | struct bp_target_info *bp_tgt) | |
ccaa32c7 GS |
3118 | { |
3119 | int retval; | |
3120 | ||
a6d9a66e | 3121 | retval = debug_target.to_insert_hw_breakpoint (gdbarch, bp_tgt); |
ccaa32c7 GS |
3122 | |
3123 | fprintf_unfiltered (gdb_stdlog, | |
3124 | "target_insert_hw_breakpoint (0x%lx, xxx) = %ld\n", | |
8181d85f | 3125 | (unsigned long) bp_tgt->placed_address, |
ccaa32c7 GS |
3126 | (unsigned long) retval); |
3127 | return retval; | |
3128 | } | |
3129 | ||
3130 | static int | |
a6d9a66e UW |
3131 | debug_to_remove_hw_breakpoint (struct gdbarch *gdbarch, |
3132 | struct bp_target_info *bp_tgt) | |
ccaa32c7 GS |
3133 | { |
3134 | int retval; | |
3135 | ||
a6d9a66e | 3136 | retval = debug_target.to_remove_hw_breakpoint (gdbarch, bp_tgt); |
ccaa32c7 GS |
3137 | |
3138 | fprintf_unfiltered (gdb_stdlog, | |
3139 | "target_remove_hw_breakpoint (0x%lx, xxx) = %ld\n", | |
8181d85f | 3140 | (unsigned long) bp_tgt->placed_address, |
ccaa32c7 GS |
3141 | (unsigned long) retval); |
3142 | return retval; | |
3143 | } | |
3144 | ||
3145 | static int | |
3146 | debug_to_insert_watchpoint (CORE_ADDR addr, int len, int type) | |
3147 | { | |
3148 | int retval; | |
3149 | ||
3150 | retval = debug_target.to_insert_watchpoint (addr, len, type); | |
3151 | ||
3152 | fprintf_unfiltered (gdb_stdlog, | |
3153 | "target_insert_watchpoint (0x%lx, %d, %d) = %ld\n", | |
3154 | (unsigned long) addr, len, type, (unsigned long) retval); | |
3155 | return retval; | |
3156 | } | |
3157 | ||
3158 | static int | |
3159 | debug_to_remove_watchpoint (CORE_ADDR addr, int len, int type) | |
3160 | { | |
3161 | int retval; | |
3162 | ||
ecde4882 | 3163 | retval = debug_target.to_remove_watchpoint (addr, len, type); |
ccaa32c7 GS |
3164 | |
3165 | fprintf_unfiltered (gdb_stdlog, | |
ecde4882 | 3166 | "target_remove_watchpoint (0x%lx, %d, %d) = %ld\n", |
ccaa32c7 GS |
3167 | (unsigned long) addr, len, type, (unsigned long) retval); |
3168 | return retval; | |
3169 | } | |
3170 | ||
c906108c | 3171 | static void |
fba45db2 | 3172 | debug_to_terminal_init (void) |
c906108c SS |
3173 | { |
3174 | debug_target.to_terminal_init (); | |
3175 | ||
96baa820 | 3176 | fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n"); |
c906108c SS |
3177 | } |
3178 | ||
3179 | static void | |
fba45db2 | 3180 | debug_to_terminal_inferior (void) |
c906108c SS |
3181 | { |
3182 | debug_target.to_terminal_inferior (); | |
3183 | ||
96baa820 | 3184 | fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n"); |
c906108c SS |
3185 | } |
3186 | ||
3187 | static void | |
fba45db2 | 3188 | debug_to_terminal_ours_for_output (void) |
c906108c SS |
3189 | { |
3190 | debug_target.to_terminal_ours_for_output (); | |
3191 | ||
96baa820 | 3192 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n"); |
c906108c SS |
3193 | } |
3194 | ||
3195 | static void | |
fba45db2 | 3196 | debug_to_terminal_ours (void) |
c906108c SS |
3197 | { |
3198 | debug_target.to_terminal_ours (); | |
3199 | ||
96baa820 | 3200 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n"); |
c906108c SS |
3201 | } |
3202 | ||
a790ad35 SC |
3203 | static void |
3204 | debug_to_terminal_save_ours (void) | |
3205 | { | |
3206 | debug_target.to_terminal_save_ours (); | |
3207 | ||
3208 | fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n"); | |
3209 | } | |
3210 | ||
c906108c | 3211 | static void |
fba45db2 | 3212 | debug_to_terminal_info (char *arg, int from_tty) |
c906108c SS |
3213 | { |
3214 | debug_target.to_terminal_info (arg, from_tty); | |
3215 | ||
96baa820 | 3216 | fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg, |
c906108c SS |
3217 | from_tty); |
3218 | } | |
3219 | ||
c906108c | 3220 | static void |
fba45db2 | 3221 | debug_to_load (char *args, int from_tty) |
c906108c SS |
3222 | { |
3223 | debug_target.to_load (args, from_tty); | |
3224 | ||
96baa820 | 3225 | fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty); |
c906108c SS |
3226 | } |
3227 | ||
3228 | static int | |
fba45db2 | 3229 | debug_to_lookup_symbol (char *name, CORE_ADDR *addrp) |
c906108c SS |
3230 | { |
3231 | int retval; | |
3232 | ||
3233 | retval = debug_target.to_lookup_symbol (name, addrp); | |
3234 | ||
96baa820 | 3235 | fprintf_unfiltered (gdb_stdlog, "target_lookup_symbol (%s, xxx)\n", name); |
c906108c SS |
3236 | |
3237 | return retval; | |
3238 | } | |
3239 | ||
c906108c | 3240 | static void |
39f77062 | 3241 | debug_to_post_startup_inferior (ptid_t ptid) |
c906108c | 3242 | { |
39f77062 | 3243 | debug_target.to_post_startup_inferior (ptid); |
c906108c | 3244 | |
96baa820 | 3245 | fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n", |
39f77062 | 3246 | PIDGET (ptid)); |
c906108c SS |
3247 | } |
3248 | ||
3249 | static void | |
fba45db2 | 3250 | debug_to_acknowledge_created_inferior (int pid) |
c906108c SS |
3251 | { |
3252 | debug_target.to_acknowledge_created_inferior (pid); | |
3253 | ||
96baa820 | 3254 | fprintf_unfiltered (gdb_stdlog, "target_acknowledge_created_inferior (%d)\n", |
c906108c SS |
3255 | pid); |
3256 | } | |
3257 | ||
fa113d1a | 3258 | static void |
fba45db2 | 3259 | debug_to_insert_fork_catchpoint (int pid) |
c906108c | 3260 | { |
fa113d1a | 3261 | debug_target.to_insert_fork_catchpoint (pid); |
c906108c | 3262 | |
fa113d1a AC |
3263 | fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d)\n", |
3264 | pid); | |
c906108c SS |
3265 | } |
3266 | ||
3267 | static int | |
fba45db2 | 3268 | debug_to_remove_fork_catchpoint (int pid) |
c906108c | 3269 | { |
c5aa993b | 3270 | int retval; |
c906108c SS |
3271 | |
3272 | retval = debug_target.to_remove_fork_catchpoint (pid); | |
3273 | ||
96baa820 | 3274 | fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n", |
c5aa993b | 3275 | pid, retval); |
c906108c SS |
3276 | |
3277 | return retval; | |
3278 | } | |
3279 | ||
fa113d1a | 3280 | static void |
fba45db2 | 3281 | debug_to_insert_vfork_catchpoint (int pid) |
c906108c | 3282 | { |
fa113d1a | 3283 | debug_target.to_insert_vfork_catchpoint (pid); |
c906108c | 3284 | |
fa113d1a AC |
3285 | fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d)\n", |
3286 | pid); | |
c906108c SS |
3287 | } |
3288 | ||
3289 | static int | |
fba45db2 | 3290 | debug_to_remove_vfork_catchpoint (int pid) |
c906108c | 3291 | { |
c5aa993b | 3292 | int retval; |
c906108c SS |
3293 | |
3294 | retval = debug_target.to_remove_vfork_catchpoint (pid); | |
3295 | ||
96baa820 | 3296 | fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n", |
c5aa993b | 3297 | pid, retval); |
c906108c SS |
3298 | |
3299 | return retval; | |
3300 | } | |
3301 | ||
fa113d1a | 3302 | static void |
fba45db2 | 3303 | debug_to_insert_exec_catchpoint (int pid) |
c906108c | 3304 | { |
fa113d1a | 3305 | debug_target.to_insert_exec_catchpoint (pid); |
c906108c | 3306 | |
fa113d1a AC |
3307 | fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d)\n", |
3308 | pid); | |
c906108c SS |
3309 | } |
3310 | ||
3311 | static int | |
fba45db2 | 3312 | debug_to_remove_exec_catchpoint (int pid) |
c906108c | 3313 | { |
c5aa993b | 3314 | int retval; |
c906108c SS |
3315 | |
3316 | retval = debug_target.to_remove_exec_catchpoint (pid); | |
3317 | ||
96baa820 | 3318 | fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n", |
c5aa993b | 3319 | pid, retval); |
c906108c SS |
3320 | |
3321 | return retval; | |
3322 | } | |
3323 | ||
c906108c | 3324 | static int |
fba45db2 | 3325 | debug_to_has_exited (int pid, int wait_status, int *exit_status) |
c906108c | 3326 | { |
c5aa993b | 3327 | int has_exited; |
c906108c SS |
3328 | |
3329 | has_exited = debug_target.to_has_exited (pid, wait_status, exit_status); | |
3330 | ||
96baa820 | 3331 | fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n", |
c5aa993b | 3332 | pid, wait_status, *exit_status, has_exited); |
c906108c SS |
3333 | |
3334 | return has_exited; | |
3335 | } | |
3336 | ||
c906108c | 3337 | static int |
fba45db2 | 3338 | debug_to_can_run (void) |
c906108c SS |
3339 | { |
3340 | int retval; | |
3341 | ||
3342 | retval = debug_target.to_can_run (); | |
3343 | ||
96baa820 | 3344 | fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval); |
c906108c SS |
3345 | |
3346 | return retval; | |
3347 | } | |
3348 | ||
3349 | static void | |
39f77062 | 3350 | debug_to_notice_signals (ptid_t ptid) |
c906108c | 3351 | { |
39f77062 | 3352 | debug_target.to_notice_signals (ptid); |
c906108c | 3353 | |
39f77062 KB |
3354 | fprintf_unfiltered (gdb_stdlog, "target_notice_signals (%d)\n", |
3355 | PIDGET (ptid)); | |
c906108c SS |
3356 | } |
3357 | ||
c2250ad1 UW |
3358 | static struct gdbarch * |
3359 | debug_to_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
3360 | { | |
3361 | struct gdbarch *retval; | |
3362 | ||
3363 | retval = debug_target.to_thread_architecture (ops, ptid); | |
3364 | ||
3365 | fprintf_unfiltered (gdb_stdlog, "target_thread_architecture (%s) = %p [%s]\n", | |
3366 | target_pid_to_str (ptid), retval, | |
3367 | gdbarch_bfd_arch_info (retval)->printable_name); | |
3368 | return retval; | |
3369 | } | |
3370 | ||
c906108c | 3371 | static void |
94cc34af | 3372 | debug_to_stop (ptid_t ptid) |
c906108c | 3373 | { |
94cc34af | 3374 | debug_target.to_stop (ptid); |
c906108c | 3375 | |
94cc34af PA |
3376 | fprintf_unfiltered (gdb_stdlog, "target_stop (%s)\n", |
3377 | target_pid_to_str (ptid)); | |
c906108c SS |
3378 | } |
3379 | ||
96baa820 JM |
3380 | static void |
3381 | debug_to_rcmd (char *command, | |
d9fcf2fb | 3382 | struct ui_file *outbuf) |
96baa820 JM |
3383 | { |
3384 | debug_target.to_rcmd (command, outbuf); | |
3385 | fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command); | |
3386 | } | |
3387 | ||
c906108c | 3388 | static char * |
fba45db2 | 3389 | debug_to_pid_to_exec_file (int pid) |
c906108c | 3390 | { |
c5aa993b | 3391 | char *exec_file; |
c906108c SS |
3392 | |
3393 | exec_file = debug_target.to_pid_to_exec_file (pid); | |
3394 | ||
96baa820 | 3395 | fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n", |
c5aa993b | 3396 | pid, exec_file); |
c906108c SS |
3397 | |
3398 | return exec_file; | |
3399 | } | |
3400 | ||
c906108c | 3401 | static void |
fba45db2 | 3402 | setup_target_debug (void) |
c906108c SS |
3403 | { |
3404 | memcpy (&debug_target, ¤t_target, sizeof debug_target); | |
3405 | ||
3406 | current_target.to_open = debug_to_open; | |
c906108c | 3407 | current_target.to_post_attach = debug_to_post_attach; |
c906108c | 3408 | current_target.to_prepare_to_store = debug_to_prepare_to_store; |
c8e73a31 | 3409 | current_target.deprecated_xfer_memory = deprecated_debug_xfer_memory; |
c906108c SS |
3410 | current_target.to_files_info = debug_to_files_info; |
3411 | current_target.to_insert_breakpoint = debug_to_insert_breakpoint; | |
3412 | current_target.to_remove_breakpoint = debug_to_remove_breakpoint; | |
ccaa32c7 GS |
3413 | current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint; |
3414 | current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint; | |
3415 | current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint; | |
3416 | current_target.to_insert_watchpoint = debug_to_insert_watchpoint; | |
3417 | current_target.to_remove_watchpoint = debug_to_remove_watchpoint; | |
3418 | current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint; | |
3419 | current_target.to_stopped_data_address = debug_to_stopped_data_address; | |
5009afc5 | 3420 | current_target.to_watchpoint_addr_within_range = debug_to_watchpoint_addr_within_range; |
e0d24f8d | 3421 | current_target.to_region_ok_for_hw_watchpoint = debug_to_region_ok_for_hw_watchpoint; |
c906108c SS |
3422 | current_target.to_terminal_init = debug_to_terminal_init; |
3423 | current_target.to_terminal_inferior = debug_to_terminal_inferior; | |
3424 | current_target.to_terminal_ours_for_output = debug_to_terminal_ours_for_output; | |
3425 | current_target.to_terminal_ours = debug_to_terminal_ours; | |
a790ad35 | 3426 | current_target.to_terminal_save_ours = debug_to_terminal_save_ours; |
c906108c | 3427 | current_target.to_terminal_info = debug_to_terminal_info; |
c906108c SS |
3428 | current_target.to_load = debug_to_load; |
3429 | current_target.to_lookup_symbol = debug_to_lookup_symbol; | |
c906108c SS |
3430 | current_target.to_post_startup_inferior = debug_to_post_startup_inferior; |
3431 | current_target.to_acknowledge_created_inferior = debug_to_acknowledge_created_inferior; | |
c906108c SS |
3432 | current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint; |
3433 | current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint; | |
3434 | current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint; | |
3435 | current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint; | |
c906108c SS |
3436 | current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint; |
3437 | current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint; | |
c906108c | 3438 | current_target.to_has_exited = debug_to_has_exited; |
c906108c SS |
3439 | current_target.to_can_run = debug_to_can_run; |
3440 | current_target.to_notice_signals = debug_to_notice_signals; | |
c906108c | 3441 | current_target.to_stop = debug_to_stop; |
96baa820 | 3442 | current_target.to_rcmd = debug_to_rcmd; |
c906108c | 3443 | current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file; |
c2250ad1 | 3444 | current_target.to_thread_architecture = debug_to_thread_architecture; |
c906108c | 3445 | } |
c906108c | 3446 | \f |
c5aa993b JM |
3447 | |
3448 | static char targ_desc[] = | |
3449 | "Names of targets and files being debugged.\n\ | |
c906108c SS |
3450 | Shows the entire stack of targets currently in use (including the exec-file,\n\ |
3451 | core-file, and process, if any), as well as the symbol file name."; | |
3452 | ||
96baa820 JM |
3453 | static void |
3454 | do_monitor_command (char *cmd, | |
3455 | int from_tty) | |
3456 | { | |
2b5fe715 AC |
3457 | if ((current_target.to_rcmd |
3458 | == (void (*) (char *, struct ui_file *)) tcomplain) | |
96baa820 | 3459 | || (current_target.to_rcmd == debug_to_rcmd |
2b5fe715 AC |
3460 | && (debug_target.to_rcmd |
3461 | == (void (*) (char *, struct ui_file *)) tcomplain))) | |
8a3fe4f8 | 3462 | error (_("\"monitor\" command not supported by this target.")); |
96baa820 JM |
3463 | target_rcmd (cmd, gdb_stdtarg); |
3464 | } | |
3465 | ||
87680a14 JB |
3466 | /* Print the name of each layers of our target stack. */ |
3467 | ||
3468 | static void | |
3469 | maintenance_print_target_stack (char *cmd, int from_tty) | |
3470 | { | |
3471 | struct target_ops *t; | |
3472 | ||
3473 | printf_filtered (_("The current target stack is:\n")); | |
3474 | ||
3475 | for (t = target_stack; t != NULL; t = t->beneath) | |
3476 | { | |
3477 | printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname); | |
3478 | } | |
3479 | } | |
3480 | ||
c6ebd6cf VP |
3481 | /* Controls if async mode is permitted. */ |
3482 | int target_async_permitted = 0; | |
3483 | ||
3484 | /* The set command writes to this variable. If the inferior is | |
3485 | executing, linux_nat_async_permitted is *not* updated. */ | |
3486 | static int target_async_permitted_1 = 0; | |
3487 | ||
3488 | static void | |
3489 | set_maintenance_target_async_permitted (char *args, int from_tty, | |
3490 | struct cmd_list_element *c) | |
3491 | { | |
c35b1492 | 3492 | if (have_live_inferiors ()) |
c6ebd6cf VP |
3493 | { |
3494 | target_async_permitted_1 = target_async_permitted; | |
3495 | error (_("Cannot change this setting while the inferior is running.")); | |
3496 | } | |
3497 | ||
3498 | target_async_permitted = target_async_permitted_1; | |
3499 | } | |
3500 | ||
3501 | static void | |
3502 | show_maintenance_target_async_permitted (struct ui_file *file, int from_tty, | |
3503 | struct cmd_list_element *c, | |
3504 | const char *value) | |
3505 | { | |
3506 | fprintf_filtered (file, _("\ | |
3507 | Controlling the inferior in asynchronous mode is %s.\n"), value); | |
3508 | } | |
3509 | ||
c906108c | 3510 | void |
fba45db2 | 3511 | initialize_targets (void) |
c906108c SS |
3512 | { |
3513 | init_dummy_target (); | |
3514 | push_target (&dummy_target); | |
3515 | ||
3516 | add_info ("target", target_info, targ_desc); | |
3517 | add_info ("files", target_info, targ_desc); | |
3518 | ||
85c07804 AC |
3519 | add_setshow_zinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
3520 | Set target debugging."), _("\ | |
3521 | Show target debugging."), _("\ | |
333dabeb DJ |
3522 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
3523 | verbose. Changes do not take effect until the next \"run\" or \"target\"\n\ | |
85c07804 AC |
3524 | command."), |
3525 | NULL, | |
920d2a44 | 3526 | show_targetdebug, |
85c07804 | 3527 | &setdebuglist, &showdebuglist); |
3a11626d | 3528 | |
2bc416ba | 3529 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
3530 | &trust_readonly, _("\ |
3531 | Set mode for reading from readonly sections."), _("\ | |
3532 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
3533 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
3534 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 3535 | result in significant performance improvement for remote targets."), |
2c5b56ce | 3536 | NULL, |
920d2a44 | 3537 | show_trust_readonly, |
e707bbc2 | 3538 | &setlist, &showlist); |
96baa820 JM |
3539 | |
3540 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 3541 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 3542 | |
87680a14 JB |
3543 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
3544 | _("Print the name of each layer of the internal target stack."), | |
3545 | &maintenanceprintlist); | |
3546 | ||
c6ebd6cf VP |
3547 | add_setshow_boolean_cmd ("target-async", no_class, |
3548 | &target_async_permitted_1, _("\ | |
3549 | Set whether gdb controls the inferior in asynchronous mode."), _("\ | |
3550 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
3551 | Tells gdb whether to control the inferior in asynchronous mode."), | |
3552 | set_maintenance_target_async_permitted, | |
3553 | show_maintenance_target_async_permitted, | |
3554 | &setlist, | |
3555 | &showlist); | |
3556 | ||
4e5d721f | 3557 | add_setshow_boolean_cmd ("stack-cache", class_support, |
9cf1b572 | 3558 | &stack_cache_enabled_p_1, _("\ |
4e5d721f DE |
3559 | Set cache use for stack access."), _("\ |
3560 | Show cache use for stack access."), _("\ | |
3561 | When on, use the data cache for all stack access, regardless of any\n\ | |
3562 | configured memory regions. This improves remote performance significantly.\n\ | |
3563 | By default, caching for stack access is on."), | |
3564 | set_stack_cache_enabled_p, | |
3565 | show_stack_cache_enabled_p, | |
3566 | &setlist, &showlist); | |
3567 | ||
8add0441 | 3568 | target_dcache = dcache_init (); |
c906108c | 3569 | } |