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); | |
a96d9b2e | 650 | INHERIT (to_set_syscall_catchpoint, t); |
7998dfc3 | 651 | INHERIT (to_has_exited, t); |
117de6a9 | 652 | /* Do not inherit to_mourn_inferiour. */ |
7998dfc3 AC |
653 | INHERIT (to_can_run, t); |
654 | INHERIT (to_notice_signals, t); | |
28439f5e PA |
655 | /* Do not inherit to_thread_alive. */ |
656 | /* Do not inherit to_find_new_threads. */ | |
117de6a9 | 657 | /* Do not inherit to_pid_to_str. */ |
7998dfc3 AC |
658 | INHERIT (to_extra_thread_info, t); |
659 | INHERIT (to_stop, t); | |
4b8a223f | 660 | /* Do not inherit to_xfer_partial. */ |
7998dfc3 | 661 | INHERIT (to_rcmd, t); |
7998dfc3 | 662 | INHERIT (to_pid_to_exec_file, t); |
49d03eab | 663 | INHERIT (to_log_command, t); |
7998dfc3 | 664 | INHERIT (to_stratum, t); |
c35b1492 PA |
665 | /* Do not inherit to_has_all_memory */ |
666 | /* Do not inherit to_has_memory */ | |
667 | /* Do not inherit to_has_stack */ | |
668 | /* Do not inherit to_has_registers */ | |
669 | /* Do not inherit to_has_execution */ | |
7998dfc3 | 670 | INHERIT (to_has_thread_control, t); |
7998dfc3 AC |
671 | INHERIT (to_can_async_p, t); |
672 | INHERIT (to_is_async_p, t); | |
673 | INHERIT (to_async, t); | |
b84876c2 | 674 | INHERIT (to_async_mask, t); |
7998dfc3 AC |
675 | INHERIT (to_find_memory_regions, t); |
676 | INHERIT (to_make_corefile_notes, t); | |
117de6a9 | 677 | /* Do not inherit to_get_thread_local_address. */ |
b2175913 | 678 | INHERIT (to_can_execute_reverse, t); |
c2250ad1 | 679 | INHERIT (to_thread_architecture, t); |
424163ea | 680 | /* Do not inherit to_read_description. */ |
0ef643c8 | 681 | INHERIT (to_get_ada_task_ptid, t); |
08388c79 | 682 | /* Do not inherit to_search_memory. */ |
8a305172 | 683 | INHERIT (to_supports_multi_process, t); |
7998dfc3 | 684 | INHERIT (to_magic, t); |
fd79ecee | 685 | /* Do not inherit to_memory_map. */ |
a76d924d DJ |
686 | /* Do not inherit to_flash_erase. */ |
687 | /* Do not inherit to_flash_done. */ | |
7998dfc3 AC |
688 | } |
689 | #undef INHERIT | |
690 | ||
691 | /* Clean up a target struct so it no longer has any zero pointers in | |
0088c768 AC |
692 | it. Some entries are defaulted to a method that print an error, |
693 | others are hard-wired to a standard recursive default. */ | |
c906108c SS |
694 | |
695 | #define de_fault(field, value) \ | |
7998dfc3 AC |
696 | if (!current_target.field) \ |
697 | current_target.field = value | |
0d06e24b | 698 | |
2bc416ba DJ |
699 | de_fault (to_open, |
700 | (void (*) (char *, int)) | |
0d06e24b | 701 | tcomplain); |
2bc416ba DJ |
702 | de_fault (to_close, |
703 | (void (*) (int)) | |
0d06e24b | 704 | target_ignore); |
2bc416ba DJ |
705 | de_fault (to_post_attach, |
706 | (void (*) (int)) | |
0d06e24b | 707 | target_ignore); |
2bc416ba | 708 | de_fault (to_prepare_to_store, |
316f2060 | 709 | (void (*) (struct regcache *)) |
0d06e24b | 710 | noprocess); |
2bc416ba DJ |
711 | de_fault (deprecated_xfer_memory, |
712 | (int (*) (CORE_ADDR, gdb_byte *, int, int, struct mem_attrib *, struct target_ops *)) | |
0d06e24b | 713 | nomemory); |
2bc416ba DJ |
714 | de_fault (to_files_info, |
715 | (void (*) (struct target_ops *)) | |
0d06e24b | 716 | target_ignore); |
2bc416ba | 717 | de_fault (to_insert_breakpoint, |
0d06e24b | 718 | memory_insert_breakpoint); |
2bc416ba | 719 | de_fault (to_remove_breakpoint, |
0d06e24b | 720 | memory_remove_breakpoint); |
ccaa32c7 GS |
721 | de_fault (to_can_use_hw_breakpoint, |
722 | (int (*) (int, int, int)) | |
723 | return_zero); | |
724 | de_fault (to_insert_hw_breakpoint, | |
a6d9a66e | 725 | (int (*) (struct gdbarch *, struct bp_target_info *)) |
ccaa32c7 GS |
726 | return_minus_one); |
727 | de_fault (to_remove_hw_breakpoint, | |
a6d9a66e | 728 | (int (*) (struct gdbarch *, struct bp_target_info *)) |
ccaa32c7 GS |
729 | return_minus_one); |
730 | de_fault (to_insert_watchpoint, | |
731 | (int (*) (CORE_ADDR, int, int)) | |
732 | return_minus_one); | |
733 | de_fault (to_remove_watchpoint, | |
734 | (int (*) (CORE_ADDR, int, int)) | |
735 | return_minus_one); | |
736 | de_fault (to_stopped_by_watchpoint, | |
737 | (int (*) (void)) | |
738 | return_zero); | |
739 | de_fault (to_stopped_data_address, | |
4aa7a7f5 | 740 | (int (*) (struct target_ops *, CORE_ADDR *)) |
ccaa32c7 | 741 | return_zero); |
5009afc5 AS |
742 | de_fault (to_watchpoint_addr_within_range, |
743 | default_watchpoint_addr_within_range); | |
e0d24f8d WZ |
744 | de_fault (to_region_ok_for_hw_watchpoint, |
745 | default_region_ok_for_hw_watchpoint); | |
2bc416ba DJ |
746 | de_fault (to_terminal_init, |
747 | (void (*) (void)) | |
0d06e24b | 748 | target_ignore); |
2bc416ba DJ |
749 | de_fault (to_terminal_inferior, |
750 | (void (*) (void)) | |
0d06e24b | 751 | target_ignore); |
2bc416ba DJ |
752 | de_fault (to_terminal_ours_for_output, |
753 | (void (*) (void)) | |
0d06e24b | 754 | target_ignore); |
2bc416ba DJ |
755 | de_fault (to_terminal_ours, |
756 | (void (*) (void)) | |
0d06e24b | 757 | target_ignore); |
2bc416ba DJ |
758 | de_fault (to_terminal_save_ours, |
759 | (void (*) (void)) | |
a790ad35 | 760 | target_ignore); |
2bc416ba | 761 | de_fault (to_terminal_info, |
0d06e24b | 762 | default_terminal_info); |
2bc416ba DJ |
763 | de_fault (to_load, |
764 | (void (*) (char *, int)) | |
0d06e24b | 765 | tcomplain); |
2bc416ba DJ |
766 | de_fault (to_lookup_symbol, |
767 | (int (*) (char *, CORE_ADDR *)) | |
0d06e24b | 768 | nosymbol); |
2bc416ba DJ |
769 | de_fault (to_post_startup_inferior, |
770 | (void (*) (ptid_t)) | |
0d06e24b | 771 | target_ignore); |
2bc416ba DJ |
772 | de_fault (to_acknowledge_created_inferior, |
773 | (void (*) (int)) | |
0d06e24b | 774 | target_ignore); |
2bc416ba DJ |
775 | de_fault (to_insert_fork_catchpoint, |
776 | (void (*) (int)) | |
0d06e24b | 777 | tcomplain); |
2bc416ba DJ |
778 | de_fault (to_remove_fork_catchpoint, |
779 | (int (*) (int)) | |
0d06e24b | 780 | tcomplain); |
2bc416ba DJ |
781 | de_fault (to_insert_vfork_catchpoint, |
782 | (void (*) (int)) | |
0d06e24b | 783 | tcomplain); |
2bc416ba DJ |
784 | de_fault (to_remove_vfork_catchpoint, |
785 | (int (*) (int)) | |
0d06e24b | 786 | tcomplain); |
2bc416ba DJ |
787 | de_fault (to_insert_exec_catchpoint, |
788 | (void (*) (int)) | |
0d06e24b | 789 | tcomplain); |
2bc416ba DJ |
790 | de_fault (to_remove_exec_catchpoint, |
791 | (int (*) (int)) | |
0d06e24b | 792 | tcomplain); |
a96d9b2e SDJ |
793 | de_fault (to_set_syscall_catchpoint, |
794 | (int (*) (int, int, int, int, int *)) | |
795 | tcomplain); | |
2bc416ba DJ |
796 | de_fault (to_has_exited, |
797 | (int (*) (int, int, int *)) | |
0d06e24b | 798 | return_zero); |
2bc416ba | 799 | de_fault (to_can_run, |
0d06e24b | 800 | return_zero); |
2bc416ba DJ |
801 | de_fault (to_notice_signals, |
802 | (void (*) (ptid_t)) | |
0d06e24b | 803 | target_ignore); |
2bc416ba DJ |
804 | de_fault (to_extra_thread_info, |
805 | (char *(*) (struct thread_info *)) | |
0d06e24b | 806 | return_zero); |
2bc416ba | 807 | de_fault (to_stop, |
94cc34af | 808 | (void (*) (ptid_t)) |
0d06e24b | 809 | target_ignore); |
cf7a04e8 | 810 | current_target.to_xfer_partial = current_xfer_partial; |
2bc416ba DJ |
811 | de_fault (to_rcmd, |
812 | (void (*) (char *, struct ui_file *)) | |
0d06e24b | 813 | tcomplain); |
2bc416ba DJ |
814 | de_fault (to_pid_to_exec_file, |
815 | (char *(*) (int)) | |
0d06e24b | 816 | return_zero); |
2bc416ba DJ |
817 | de_fault (to_async, |
818 | (void (*) (void (*) (enum inferior_event_type, void*), void*)) | |
0d06e24b | 819 | tcomplain); |
b84876c2 PA |
820 | de_fault (to_async_mask, |
821 | (int (*) (int)) | |
822 | return_one); | |
c2250ad1 UW |
823 | de_fault (to_thread_architecture, |
824 | default_thread_architecture); | |
424163ea | 825 | current_target.to_read_description = NULL; |
0ef643c8 JB |
826 | de_fault (to_get_ada_task_ptid, |
827 | (ptid_t (*) (long, long)) | |
828 | default_get_ada_task_ptid); | |
8a305172 PA |
829 | de_fault (to_supports_multi_process, |
830 | (int (*) (void)) | |
831 | return_zero); | |
c906108c | 832 | #undef de_fault |
c906108c | 833 | |
7998dfc3 AC |
834 | /* Finally, position the target-stack beneath the squashed |
835 | "current_target". That way code looking for a non-inherited | |
836 | target method can quickly and simply find it. */ | |
837 | current_target.beneath = target_stack; | |
b4b61fdb DJ |
838 | |
839 | if (targetdebug) | |
840 | setup_target_debug (); | |
c906108c SS |
841 | } |
842 | ||
843 | /* Push a new target type into the stack of the existing target accessors, | |
844 | possibly superseding some of the existing accessors. | |
845 | ||
846 | Result is zero if the pushed target ended up on top of the stack, | |
847 | nonzero if at least one target is on top of it. | |
848 | ||
849 | Rather than allow an empty stack, we always have the dummy target at | |
850 | the bottom stratum, so we can call the function vectors without | |
851 | checking them. */ | |
852 | ||
853 | int | |
fba45db2 | 854 | push_target (struct target_ops *t) |
c906108c | 855 | { |
258b763a | 856 | struct target_ops **cur; |
c906108c SS |
857 | |
858 | /* Check magic number. If wrong, it probably means someone changed | |
859 | the struct definition, but not all the places that initialize one. */ | |
860 | if (t->to_magic != OPS_MAGIC) | |
861 | { | |
c5aa993b JM |
862 | fprintf_unfiltered (gdb_stderr, |
863 | "Magic number of %s target struct wrong\n", | |
864 | t->to_shortname); | |
e2e0b3e5 | 865 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
c906108c SS |
866 | } |
867 | ||
258b763a AC |
868 | /* Find the proper stratum to install this target in. */ |
869 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
c906108c | 870 | { |
258b763a | 871 | if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum) |
c906108c SS |
872 | break; |
873 | } | |
874 | ||
258b763a | 875 | /* If there's already targets at this stratum, remove them. */ |
88c231eb | 876 | /* FIXME: cagney/2003-10-15: I think this should be popping all |
258b763a AC |
877 | targets to CUR, and not just those at this stratum level. */ |
878 | while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum) | |
879 | { | |
880 | /* There's already something at this stratum level. Close it, | |
881 | and un-hook it from the stack. */ | |
882 | struct target_ops *tmp = (*cur); | |
883 | (*cur) = (*cur)->beneath; | |
884 | tmp->beneath = NULL; | |
f1c07ab0 | 885 | target_close (tmp, 0); |
258b763a | 886 | } |
c906108c SS |
887 | |
888 | /* We have removed all targets in our stratum, now add the new one. */ | |
258b763a AC |
889 | t->beneath = (*cur); |
890 | (*cur) = t; | |
c906108c SS |
891 | |
892 | update_current_target (); | |
893 | ||
258b763a AC |
894 | /* Not on top? */ |
895 | return (t != target_stack); | |
c906108c SS |
896 | } |
897 | ||
2bc416ba | 898 | /* Remove a target_ops vector from the stack, wherever it may be. |
c906108c SS |
899 | Return how many times it was removed (0 or 1). */ |
900 | ||
901 | int | |
fba45db2 | 902 | unpush_target (struct target_ops *t) |
c906108c | 903 | { |
258b763a AC |
904 | struct target_ops **cur; |
905 | struct target_ops *tmp; | |
c906108c | 906 | |
c8d104ad PA |
907 | if (t->to_stratum == dummy_stratum) |
908 | internal_error (__FILE__, __LINE__, | |
909 | "Attempt to unpush the dummy target"); | |
910 | ||
c906108c SS |
911 | /* Look for the specified target. Note that we assume that a target |
912 | can only occur once in the target stack. */ | |
913 | ||
258b763a AC |
914 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) |
915 | { | |
916 | if ((*cur) == t) | |
917 | break; | |
918 | } | |
c906108c | 919 | |
258b763a | 920 | if ((*cur) == NULL) |
c906108c SS |
921 | return 0; /* Didn't find target_ops, quit now */ |
922 | ||
5269965e AC |
923 | /* NOTE: cagney/2003-12-06: In '94 the close call was made |
924 | unconditional by moving it to before the above check that the | |
925 | target was in the target stack (something about "Change the way | |
926 | pushing and popping of targets work to support target overlays | |
927 | and inheritance"). This doesn't make much sense - only open | |
928 | targets should be closed. */ | |
929 | target_close (t, 0); | |
930 | ||
c906108c | 931 | /* Unchain the target */ |
258b763a AC |
932 | tmp = (*cur); |
933 | (*cur) = (*cur)->beneath; | |
934 | tmp->beneath = NULL; | |
c906108c SS |
935 | |
936 | update_current_target (); | |
c906108c SS |
937 | |
938 | return 1; | |
939 | } | |
940 | ||
941 | void | |
fba45db2 | 942 | pop_target (void) |
c906108c | 943 | { |
b52323fa | 944 | target_close (target_stack, 0); /* Let it clean up */ |
258b763a | 945 | if (unpush_target (target_stack) == 1) |
c906108c SS |
946 | return; |
947 | ||
c5aa993b JM |
948 | fprintf_unfiltered (gdb_stderr, |
949 | "pop_target couldn't find target %s\n", | |
950 | current_target.to_shortname); | |
e2e0b3e5 | 951 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
c906108c SS |
952 | } |
953 | ||
aa76d38d | 954 | void |
87ab71f0 | 955 | pop_all_targets_above (enum strata above_stratum, int quitting) |
aa76d38d | 956 | { |
87ab71f0 | 957 | while ((int) (current_target.to_stratum) > (int) above_stratum) |
aa76d38d | 958 | { |
b52323fa | 959 | target_close (target_stack, quitting); |
aa76d38d PA |
960 | if (!unpush_target (target_stack)) |
961 | { | |
962 | fprintf_unfiltered (gdb_stderr, | |
963 | "pop_all_targets couldn't find target %s\n", | |
b52323fa | 964 | target_stack->to_shortname); |
aa76d38d PA |
965 | internal_error (__FILE__, __LINE__, |
966 | _("failed internal consistency check")); | |
967 | break; | |
968 | } | |
969 | } | |
970 | } | |
971 | ||
87ab71f0 PA |
972 | void |
973 | pop_all_targets (int quitting) | |
974 | { | |
975 | pop_all_targets_above (dummy_stratum, quitting); | |
976 | } | |
977 | ||
72f5cf0e | 978 | /* Using the objfile specified in OBJFILE, find the address for the |
9e35dae4 DJ |
979 | current thread's thread-local storage with offset OFFSET. */ |
980 | CORE_ADDR | |
981 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) | |
982 | { | |
983 | volatile CORE_ADDR addr = 0; | |
117de6a9 PA |
984 | struct target_ops *target; |
985 | ||
986 | for (target = current_target.beneath; | |
987 | target != NULL; | |
988 | target = target->beneath) | |
989 | { | |
990 | if (target->to_get_thread_local_address != NULL) | |
991 | break; | |
992 | } | |
9e35dae4 | 993 | |
117de6a9 | 994 | if (target != NULL |
1cf3db46 | 995 | && gdbarch_fetch_tls_load_module_address_p (target_gdbarch)) |
9e35dae4 DJ |
996 | { |
997 | ptid_t ptid = inferior_ptid; | |
998 | volatile struct gdb_exception ex; | |
999 | ||
1000 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
1001 | { | |
1002 | CORE_ADDR lm_addr; | |
1003 | ||
1004 | /* Fetch the load module address for this objfile. */ | |
1cf3db46 | 1005 | lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch, |
9e35dae4 DJ |
1006 | objfile); |
1007 | /* If it's 0, throw the appropriate exception. */ | |
1008 | if (lm_addr == 0) | |
1009 | throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR, | |
1010 | _("TLS load module not found")); | |
1011 | ||
117de6a9 | 1012 | addr = target->to_get_thread_local_address (target, ptid, lm_addr, offset); |
9e35dae4 DJ |
1013 | } |
1014 | /* If an error occurred, print TLS related messages here. Otherwise, | |
1015 | throw the error to some higher catcher. */ | |
1016 | if (ex.reason < 0) | |
1017 | { | |
1018 | int objfile_is_library = (objfile->flags & OBJF_SHARED); | |
1019 | ||
1020 | switch (ex.error) | |
1021 | { | |
1022 | case TLS_NO_LIBRARY_SUPPORT_ERROR: | |
1023 | error (_("Cannot find thread-local variables in this thread library.")); | |
1024 | break; | |
1025 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: | |
1026 | if (objfile_is_library) | |
1027 | error (_("Cannot find shared library `%s' in dynamic" | |
1028 | " linker's load module list"), objfile->name); | |
1029 | else | |
1030 | error (_("Cannot find executable file `%s' in dynamic" | |
1031 | " linker's load module list"), objfile->name); | |
1032 | break; | |
1033 | case TLS_NOT_ALLOCATED_YET_ERROR: | |
1034 | if (objfile_is_library) | |
1035 | error (_("The inferior has not yet allocated storage for" | |
1036 | " thread-local variables in\n" | |
1037 | "the shared library `%s'\n" | |
1038 | "for %s"), | |
1039 | objfile->name, target_pid_to_str (ptid)); | |
1040 | else | |
1041 | error (_("The inferior has not yet allocated storage for" | |
1042 | " thread-local variables in\n" | |
1043 | "the executable `%s'\n" | |
1044 | "for %s"), | |
1045 | objfile->name, target_pid_to_str (ptid)); | |
1046 | break; | |
1047 | case TLS_GENERIC_ERROR: | |
1048 | if (objfile_is_library) | |
1049 | error (_("Cannot find thread-local storage for %s, " | |
1050 | "shared library %s:\n%s"), | |
1051 | target_pid_to_str (ptid), | |
1052 | objfile->name, ex.message); | |
1053 | else | |
1054 | error (_("Cannot find thread-local storage for %s, " | |
1055 | "executable file %s:\n%s"), | |
1056 | target_pid_to_str (ptid), | |
1057 | objfile->name, ex.message); | |
1058 | break; | |
1059 | default: | |
1060 | throw_exception (ex); | |
1061 | break; | |
1062 | } | |
1063 | } | |
1064 | } | |
1065 | /* It wouldn't be wrong here to try a gdbarch method, too; finding | |
1066 | TLS is an ABI-specific thing. But we don't do that yet. */ | |
1067 | else | |
1068 | error (_("Cannot find thread-local variables on this target")); | |
1069 | ||
1070 | return addr; | |
1071 | } | |
1072 | ||
c906108c SS |
1073 | #undef MIN |
1074 | #define MIN(A, B) (((A) <= (B)) ? (A) : (B)) | |
1075 | ||
1076 | /* target_read_string -- read a null terminated string, up to LEN bytes, | |
1077 | from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful. | |
1078 | Set *STRING to a pointer to malloc'd memory containing the data; the caller | |
1079 | is responsible for freeing it. Return the number of bytes successfully | |
1080 | read. */ | |
1081 | ||
1082 | int | |
fba45db2 | 1083 | target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop) |
c906108c SS |
1084 | { |
1085 | int tlen, origlen, offset, i; | |
1b0ba102 | 1086 | gdb_byte buf[4]; |
c906108c SS |
1087 | int errcode = 0; |
1088 | char *buffer; | |
1089 | int buffer_allocated; | |
1090 | char *bufptr; | |
1091 | unsigned int nbytes_read = 0; | |
1092 | ||
6217bf3e MS |
1093 | gdb_assert (string); |
1094 | ||
c906108c SS |
1095 | /* Small for testing. */ |
1096 | buffer_allocated = 4; | |
1097 | buffer = xmalloc (buffer_allocated); | |
1098 | bufptr = buffer; | |
1099 | ||
1100 | origlen = len; | |
1101 | ||
1102 | while (len > 0) | |
1103 | { | |
1104 | tlen = MIN (len, 4 - (memaddr & 3)); | |
1105 | offset = memaddr & 3; | |
1106 | ||
1b0ba102 | 1107 | errcode = target_read_memory (memaddr & ~3, buf, sizeof buf); |
c906108c SS |
1108 | if (errcode != 0) |
1109 | { | |
1110 | /* The transfer request might have crossed the boundary to an | |
1111 | unallocated region of memory. Retry the transfer, requesting | |
1112 | a single byte. */ | |
1113 | tlen = 1; | |
1114 | offset = 0; | |
b8eb5af0 | 1115 | errcode = target_read_memory (memaddr, buf, 1); |
c906108c SS |
1116 | if (errcode != 0) |
1117 | goto done; | |
1118 | } | |
1119 | ||
1120 | if (bufptr - buffer + tlen > buffer_allocated) | |
1121 | { | |
1122 | unsigned int bytes; | |
1123 | bytes = bufptr - buffer; | |
1124 | buffer_allocated *= 2; | |
1125 | buffer = xrealloc (buffer, buffer_allocated); | |
1126 | bufptr = buffer + bytes; | |
1127 | } | |
1128 | ||
1129 | for (i = 0; i < tlen; i++) | |
1130 | { | |
1131 | *bufptr++ = buf[i + offset]; | |
1132 | if (buf[i + offset] == '\000') | |
1133 | { | |
1134 | nbytes_read += i + 1; | |
1135 | goto done; | |
1136 | } | |
1137 | } | |
1138 | ||
1139 | memaddr += tlen; | |
1140 | len -= tlen; | |
1141 | nbytes_read += tlen; | |
1142 | } | |
c5aa993b | 1143 | done: |
6217bf3e | 1144 | *string = buffer; |
c906108c SS |
1145 | if (errnop != NULL) |
1146 | *errnop = errcode; | |
c906108c SS |
1147 | return nbytes_read; |
1148 | } | |
1149 | ||
07b82ea5 PA |
1150 | struct target_section_table * |
1151 | target_get_section_table (struct target_ops *target) | |
1152 | { | |
1153 | struct target_ops *t; | |
1154 | ||
1155 | if (targetdebug) | |
1156 | fprintf_unfiltered (gdb_stdlog, "target_get_section_table ()\n"); | |
1157 | ||
1158 | for (t = target; t != NULL; t = t->beneath) | |
1159 | if (t->to_get_section_table != NULL) | |
1160 | return (*t->to_get_section_table) (t); | |
1161 | ||
1162 | return NULL; | |
1163 | } | |
1164 | ||
8db32d44 | 1165 | /* Find a section containing ADDR. */ |
07b82ea5 | 1166 | |
0542c86d | 1167 | struct target_section * |
8db32d44 AC |
1168 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
1169 | { | |
07b82ea5 | 1170 | struct target_section_table *table = target_get_section_table (target); |
0542c86d | 1171 | struct target_section *secp; |
07b82ea5 PA |
1172 | |
1173 | if (table == NULL) | |
1174 | return NULL; | |
1175 | ||
1176 | for (secp = table->sections; secp < table->sections_end; secp++) | |
8db32d44 AC |
1177 | { |
1178 | if (addr >= secp->addr && addr < secp->endaddr) | |
1179 | return secp; | |
1180 | } | |
1181 | return NULL; | |
1182 | } | |
1183 | ||
cf7a04e8 DJ |
1184 | /* Perform a partial memory transfer. The arguments and return |
1185 | value are just as for target_xfer_partial. */ | |
1186 | ||
1187 | static LONGEST | |
4e5d721f DE |
1188 | memory_xfer_partial (struct target_ops *ops, enum target_object object, |
1189 | void *readbuf, const void *writebuf, ULONGEST memaddr, | |
1190 | LONGEST len) | |
0779438d | 1191 | { |
cf7a04e8 DJ |
1192 | LONGEST res; |
1193 | int reg_len; | |
1194 | struct mem_region *region; | |
4e5d721f | 1195 | struct inferior *inf; |
cf7a04e8 DJ |
1196 | |
1197 | /* Zero length requests are ok and require no work. */ | |
1198 | if (len == 0) | |
1199 | return 0; | |
1200 | ||
07b82ea5 PA |
1201 | /* For accesses to unmapped overlay sections, read directly from |
1202 | files. Must do this first, as MEMADDR may need adjustment. */ | |
1203 | if (readbuf != NULL && overlay_debugging) | |
1204 | { | |
1205 | struct obj_section *section = find_pc_overlay (memaddr); | |
1206 | if (pc_in_unmapped_range (memaddr, section)) | |
1207 | { | |
1208 | struct target_section_table *table | |
1209 | = target_get_section_table (ops); | |
1210 | const char *section_name = section->the_bfd_section->name; | |
1211 | memaddr = overlay_mapped_address (memaddr, section); | |
1212 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
1213 | memaddr, len, | |
1214 | table->sections, | |
1215 | table->sections_end, | |
1216 | section_name); | |
1217 | } | |
1218 | } | |
1219 | ||
1220 | /* Try the executable files, if "trust-readonly-sections" is set. */ | |
cf7a04e8 DJ |
1221 | if (readbuf != NULL && trust_readonly) |
1222 | { | |
0542c86d | 1223 | struct target_section *secp; |
07b82ea5 | 1224 | struct target_section_table *table; |
cf7a04e8 DJ |
1225 | |
1226 | secp = target_section_by_addr (ops, memaddr); | |
1227 | if (secp != NULL | |
1228 | && (bfd_get_section_flags (secp->bfd, secp->the_bfd_section) | |
1229 | & SEC_READONLY)) | |
07b82ea5 PA |
1230 | { |
1231 | table = target_get_section_table (ops); | |
1232 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
1233 | memaddr, len, | |
1234 | table->sections, | |
1235 | table->sections_end, | |
1236 | NULL); | |
1237 | } | |
98646950 UW |
1238 | } |
1239 | ||
cf7a04e8 DJ |
1240 | /* Try GDB's internal data cache. */ |
1241 | region = lookup_mem_region (memaddr); | |
4b5752d0 VP |
1242 | /* region->hi == 0 means there's no upper bound. */ |
1243 | if (memaddr + len < region->hi || region->hi == 0) | |
cf7a04e8 DJ |
1244 | reg_len = len; |
1245 | else | |
1246 | reg_len = region->hi - memaddr; | |
1247 | ||
1248 | switch (region->attrib.mode) | |
1249 | { | |
1250 | case MEM_RO: | |
1251 | if (writebuf != NULL) | |
1252 | return -1; | |
1253 | break; | |
1254 | ||
1255 | case MEM_WO: | |
1256 | if (readbuf != NULL) | |
1257 | return -1; | |
1258 | break; | |
a76d924d DJ |
1259 | |
1260 | case MEM_FLASH: | |
1261 | /* We only support writing to flash during "load" for now. */ | |
1262 | if (writebuf != NULL) | |
1263 | error (_("Writing to flash memory forbidden in this context")); | |
1264 | break; | |
4b5752d0 VP |
1265 | |
1266 | case MEM_NONE: | |
1267 | return -1; | |
cf7a04e8 DJ |
1268 | } |
1269 | ||
4e5d721f DE |
1270 | inf = find_inferior_pid (ptid_get_pid (inferior_ptid)); |
1271 | ||
1272 | if (inf != NULL | |
1273 | && (region->attrib.cache | |
1274 | || (stack_cache_enabled_p && object == TARGET_OBJECT_STACK_MEMORY))) | |
cf7a04e8 | 1275 | { |
cf7a04e8 | 1276 | if (readbuf != NULL) |
25f122dc | 1277 | res = dcache_xfer_memory (ops, target_dcache, memaddr, readbuf, |
cf7a04e8 DJ |
1278 | reg_len, 0); |
1279 | else | |
1280 | /* FIXME drow/2006-08-09: If we're going to preserve const | |
1281 | correctness dcache_xfer_memory should take readbuf and | |
1282 | writebuf. */ | |
25f122dc | 1283 | res = dcache_xfer_memory (ops, target_dcache, memaddr, |
cf7a04e8 DJ |
1284 | (void *) writebuf, |
1285 | reg_len, 1); | |
1286 | if (res <= 0) | |
1287 | return -1; | |
1288 | else | |
8defab1a DJ |
1289 | { |
1290 | if (readbuf && !show_memory_breakpoints) | |
1291 | breakpoint_restore_shadows (readbuf, memaddr, reg_len); | |
1292 | return res; | |
1293 | } | |
cf7a04e8 DJ |
1294 | } |
1295 | ||
1296 | /* If none of those methods found the memory we wanted, fall back | |
1297 | to a target partial transfer. Normally a single call to | |
1298 | to_xfer_partial is enough; if it doesn't recognize an object | |
1299 | it will call the to_xfer_partial of the next target down. | |
1300 | But for memory this won't do. Memory is the only target | |
1301 | object which can be read from more than one valid target. | |
1302 | A core file, for instance, could have some of memory but | |
1303 | delegate other bits to the target below it. So, we must | |
1304 | manually try all targets. */ | |
1305 | ||
1306 | do | |
1307 | { | |
1308 | res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
4b5752d0 | 1309 | readbuf, writebuf, memaddr, reg_len); |
cf7a04e8 | 1310 | if (res > 0) |
8defab1a | 1311 | break; |
cf7a04e8 | 1312 | |
5ad3a4ca DJ |
1313 | /* We want to continue past core files to executables, but not |
1314 | past a running target's memory. */ | |
c35b1492 | 1315 | if (ops->to_has_all_memory (ops)) |
8defab1a | 1316 | break; |
5ad3a4ca | 1317 | |
cf7a04e8 DJ |
1318 | ops = ops->beneath; |
1319 | } | |
1320 | while (ops != NULL); | |
1321 | ||
8defab1a DJ |
1322 | if (readbuf && !show_memory_breakpoints) |
1323 | breakpoint_restore_shadows (readbuf, memaddr, reg_len); | |
1324 | ||
41dcd03f DE |
1325 | /* Make sure the cache gets updated no matter what - if we are writing |
1326 | to the stack. Even if this write is not tagged as such, we still need | |
1327 | to update the cache. */ | |
1328 | ||
1329 | if (res > 0 | |
1330 | && inf != NULL | |
1331 | && writebuf != NULL | |
1332 | && !region->attrib.cache | |
1333 | && stack_cache_enabled_p | |
1334 | && object != TARGET_OBJECT_STACK_MEMORY) | |
1335 | { | |
7d4f32d3 | 1336 | dcache_update (target_dcache, memaddr, (void *) writebuf, res); |
41dcd03f DE |
1337 | } |
1338 | ||
cf7a04e8 DJ |
1339 | /* If we still haven't got anything, return the last error. We |
1340 | give up. */ | |
1341 | return res; | |
0779438d AC |
1342 | } |
1343 | ||
8defab1a DJ |
1344 | static void |
1345 | restore_show_memory_breakpoints (void *arg) | |
1346 | { | |
1347 | show_memory_breakpoints = (uintptr_t) arg; | |
1348 | } | |
1349 | ||
1350 | struct cleanup * | |
1351 | make_show_memory_breakpoints_cleanup (int show) | |
1352 | { | |
1353 | int current = show_memory_breakpoints; | |
1354 | show_memory_breakpoints = show; | |
1355 | ||
1356 | return make_cleanup (restore_show_memory_breakpoints, | |
1357 | (void *) (uintptr_t) current); | |
1358 | } | |
1359 | ||
27394598 AC |
1360 | static LONGEST |
1361 | target_xfer_partial (struct target_ops *ops, | |
1362 | enum target_object object, const char *annex, | |
1363 | void *readbuf, const void *writebuf, | |
1364 | ULONGEST offset, LONGEST len) | |
1365 | { | |
1366 | LONGEST retval; | |
1367 | ||
1368 | gdb_assert (ops->to_xfer_partial != NULL); | |
cf7a04e8 DJ |
1369 | |
1370 | /* If this is a memory transfer, let the memory-specific code | |
1371 | have a look at it instead. Memory transfers are more | |
1372 | complicated. */ | |
4e5d721f DE |
1373 | if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY) |
1374 | retval = memory_xfer_partial (ops, object, readbuf, | |
1375 | writebuf, offset, len); | |
cf7a04e8 DJ |
1376 | else |
1377 | { | |
1378 | enum target_object raw_object = object; | |
1379 | ||
1380 | /* If this is a raw memory transfer, request the normal | |
1381 | memory object from other layers. */ | |
1382 | if (raw_object == TARGET_OBJECT_RAW_MEMORY) | |
1383 | raw_object = TARGET_OBJECT_MEMORY; | |
1384 | ||
1385 | retval = ops->to_xfer_partial (ops, raw_object, annex, readbuf, | |
1386 | writebuf, offset, len); | |
1387 | } | |
1388 | ||
27394598 AC |
1389 | if (targetdebug) |
1390 | { | |
1391 | const unsigned char *myaddr = NULL; | |
1392 | ||
1393 | fprintf_unfiltered (gdb_stdlog, | |
53b71562 | 1394 | "%s:target_xfer_partial (%d, %s, %s, %s, %s, %s) = %s", |
27394598 AC |
1395 | ops->to_shortname, |
1396 | (int) object, | |
1397 | (annex ? annex : "(null)"), | |
53b71562 JB |
1398 | host_address_to_string (readbuf), |
1399 | host_address_to_string (writebuf), | |
0b1553bc UW |
1400 | core_addr_to_string_nz (offset), |
1401 | plongest (len), plongest (retval)); | |
27394598 AC |
1402 | |
1403 | if (readbuf) | |
1404 | myaddr = readbuf; | |
1405 | if (writebuf) | |
1406 | myaddr = writebuf; | |
1407 | if (retval > 0 && myaddr != NULL) | |
1408 | { | |
1409 | int i; | |
2bc416ba | 1410 | |
27394598 AC |
1411 | fputs_unfiltered (", bytes =", gdb_stdlog); |
1412 | for (i = 0; i < retval; i++) | |
1413 | { | |
53b71562 | 1414 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1415 | { |
1416 | if (targetdebug < 2 && i > 0) | |
1417 | { | |
1418 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
1419 | break; | |
1420 | } | |
1421 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1422 | } | |
2bc416ba | 1423 | |
27394598 AC |
1424 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
1425 | } | |
1426 | } | |
2bc416ba | 1427 | |
27394598 AC |
1428 | fputc_unfiltered ('\n', gdb_stdlog); |
1429 | } | |
1430 | return retval; | |
1431 | } | |
1432 | ||
c906108c SS |
1433 | /* Read LEN bytes of target memory at address MEMADDR, placing the results in |
1434 | GDB's memory at MYADDR. Returns either 0 for success or an errno value | |
1435 | if any error occurs. | |
1436 | ||
1437 | If an error occurs, no guarantee is made about the contents of the data at | |
1438 | MYADDR. In particular, the caller should not depend upon partial reads | |
1439 | filling the buffer with good data. There is no way for the caller to know | |
1440 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 DJ |
1441 | deal with partial reads should call target_read (which will retry until |
1442 | it makes no progress, and then return how much was transferred). */ | |
c906108c SS |
1443 | |
1444 | int | |
fc1a4b47 | 1445 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 1446 | { |
c35b1492 PA |
1447 | /* Dispatch to the topmost target, not the flattened current_target. |
1448 | Memory accesses check target->to_has_(all_)memory, and the | |
1449 | flattened target doesn't inherit those. */ | |
1450 | if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1451 | myaddr, memaddr, len) == len) |
1452 | return 0; | |
0779438d | 1453 | else |
cf7a04e8 | 1454 | return EIO; |
c906108c SS |
1455 | } |
1456 | ||
4e5d721f DE |
1457 | /* Like target_read_memory, but specify explicitly that this is a read from |
1458 | the target's stack. This may trigger different cache behavior. */ | |
1459 | ||
1460 | int | |
1461 | target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, int len) | |
1462 | { | |
1463 | /* Dispatch to the topmost target, not the flattened current_target. | |
1464 | Memory accesses check target->to_has_(all_)memory, and the | |
1465 | flattened target doesn't inherit those. */ | |
1466 | ||
1467 | if (target_read (current_target.beneath, TARGET_OBJECT_STACK_MEMORY, NULL, | |
1468 | myaddr, memaddr, len) == len) | |
1469 | return 0; | |
1470 | else | |
1471 | return EIO; | |
1472 | } | |
1473 | ||
c906108c | 1474 | int |
fc1a4b47 | 1475 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) |
c906108c | 1476 | { |
c35b1492 PA |
1477 | /* Dispatch to the topmost target, not the flattened current_target. |
1478 | Memory accesses check target->to_has_(all_)memory, and the | |
1479 | flattened target doesn't inherit those. */ | |
1480 | if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1481 | myaddr, memaddr, len) == len) |
1482 | return 0; | |
0779438d | 1483 | else |
cf7a04e8 | 1484 | return EIO; |
c906108c | 1485 | } |
c5aa993b | 1486 | |
fd79ecee DJ |
1487 | /* Fetch the target's memory map. */ |
1488 | ||
1489 | VEC(mem_region_s) * | |
1490 | target_memory_map (void) | |
1491 | { | |
1492 | VEC(mem_region_s) *result; | |
1493 | struct mem_region *last_one, *this_one; | |
1494 | int ix; | |
1495 | struct target_ops *t; | |
1496 | ||
1497 | if (targetdebug) | |
1498 | fprintf_unfiltered (gdb_stdlog, "target_memory_map ()\n"); | |
1499 | ||
1500 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1501 | if (t->to_memory_map != NULL) | |
1502 | break; | |
1503 | ||
1504 | if (t == NULL) | |
1505 | return NULL; | |
1506 | ||
1507 | result = t->to_memory_map (t); | |
1508 | if (result == NULL) | |
1509 | return NULL; | |
1510 | ||
1511 | qsort (VEC_address (mem_region_s, result), | |
1512 | VEC_length (mem_region_s, result), | |
1513 | sizeof (struct mem_region), mem_region_cmp); | |
1514 | ||
1515 | /* Check that regions do not overlap. Simultaneously assign | |
1516 | a numbering for the "mem" commands to use to refer to | |
1517 | each region. */ | |
1518 | last_one = NULL; | |
1519 | for (ix = 0; VEC_iterate (mem_region_s, result, ix, this_one); ix++) | |
1520 | { | |
1521 | this_one->number = ix; | |
1522 | ||
1523 | if (last_one && last_one->hi > this_one->lo) | |
1524 | { | |
1525 | warning (_("Overlapping regions in memory map: ignoring")); | |
1526 | VEC_free (mem_region_s, result); | |
1527 | return NULL; | |
1528 | } | |
1529 | last_one = this_one; | |
1530 | } | |
1531 | ||
1532 | return result; | |
1533 | } | |
1534 | ||
a76d924d DJ |
1535 | void |
1536 | target_flash_erase (ULONGEST address, LONGEST length) | |
1537 | { | |
1538 | struct target_ops *t; | |
1539 | ||
1540 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1541 | if (t->to_flash_erase != NULL) | |
1542 | { | |
1543 | if (targetdebug) | |
1544 | fprintf_unfiltered (gdb_stdlog, "target_flash_erase (%s, %s)\n", | |
5af949e3 | 1545 | hex_string (address), phex (length, 0)); |
8944021f DJ |
1546 | t->to_flash_erase (t, address, length); |
1547 | return; | |
a76d924d DJ |
1548 | } |
1549 | ||
1550 | tcomplain (); | |
1551 | } | |
1552 | ||
1553 | void | |
1554 | target_flash_done (void) | |
1555 | { | |
1556 | struct target_ops *t; | |
1557 | ||
1558 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1559 | if (t->to_flash_done != NULL) | |
1560 | { | |
1561 | if (targetdebug) | |
1562 | fprintf_unfiltered (gdb_stdlog, "target_flash_done\n"); | |
8944021f DJ |
1563 | t->to_flash_done (t); |
1564 | return; | |
a76d924d DJ |
1565 | } |
1566 | ||
1567 | tcomplain (); | |
1568 | } | |
1569 | ||
920d2a44 AC |
1570 | static void |
1571 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1572 | struct cmd_list_element *c, const char *value) | |
1573 | { | |
1574 | fprintf_filtered (file, _("\ | |
1575 | Mode for reading from readonly sections is %s.\n"), | |
1576 | value); | |
1577 | } | |
3a11626d | 1578 | |
1e3ff5ad AC |
1579 | /* More generic transfers. */ |
1580 | ||
0088c768 | 1581 | static LONGEST |
8aa91c1e | 1582 | default_xfer_partial (struct target_ops *ops, enum target_object object, |
2bc416ba | 1583 | const char *annex, gdb_byte *readbuf, |
1b0ba102 | 1584 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) |
0088c768 AC |
1585 | { |
1586 | if (object == TARGET_OBJECT_MEMORY | |
c8e73a31 AC |
1587 | && ops->deprecated_xfer_memory != NULL) |
1588 | /* If available, fall back to the target's | |
1589 | "deprecated_xfer_memory" method. */ | |
0088c768 | 1590 | { |
4b8a223f | 1591 | int xfered = -1; |
0088c768 | 1592 | errno = 0; |
4b8a223f AC |
1593 | if (writebuf != NULL) |
1594 | { | |
1595 | void *buffer = xmalloc (len); | |
1596 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |
1597 | memcpy (buffer, writebuf, len); | |
c8e73a31 AC |
1598 | xfered = ops->deprecated_xfer_memory (offset, buffer, len, |
1599 | 1/*write*/, NULL, ops); | |
4b8a223f AC |
1600 | do_cleanups (cleanup); |
1601 | } | |
1602 | if (readbuf != NULL) | |
244e85c8 MS |
1603 | xfered = ops->deprecated_xfer_memory (offset, readbuf, len, |
1604 | 0/*read*/, NULL, ops); | |
0088c768 AC |
1605 | if (xfered > 0) |
1606 | return xfered; | |
1607 | else if (xfered == 0 && errno == 0) | |
c8e73a31 AC |
1608 | /* "deprecated_xfer_memory" uses 0, cross checked against |
1609 | ERRNO as one indication of an error. */ | |
0088c768 AC |
1610 | return 0; |
1611 | else | |
1612 | return -1; | |
1613 | } | |
1614 | else if (ops->beneath != NULL) | |
cf7a04e8 DJ |
1615 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, |
1616 | readbuf, writebuf, offset, len); | |
1617 | else | |
1618 | return -1; | |
1619 | } | |
1620 | ||
1621 | /* The xfer_partial handler for the topmost target. Unlike the default, | |
1622 | it does not need to handle memory specially; it just passes all | |
1623 | requests down the stack. */ | |
1624 | ||
1625 | static LONGEST | |
1626 | current_xfer_partial (struct target_ops *ops, enum target_object object, | |
1627 | const char *annex, gdb_byte *readbuf, | |
1628 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1629 | { | |
1630 | if (ops->beneath != NULL) | |
1631 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, | |
1632 | readbuf, writebuf, offset, len); | |
0088c768 AC |
1633 | else |
1634 | return -1; | |
1635 | } | |
1636 | ||
1637 | /* Target vector read/write partial wrapper functions. | |
1638 | ||
1639 | NOTE: cagney/2003-10-21: I wonder if having "to_xfer_partial | |
1640 | (inbuf, outbuf)", instead of separate read/write methods, make life | |
1641 | easier. */ | |
1642 | ||
13547ab6 | 1643 | static LONGEST |
1e3ff5ad AC |
1644 | target_read_partial (struct target_ops *ops, |
1645 | enum target_object object, | |
1b0ba102 | 1646 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1647 | ULONGEST offset, LONGEST len) |
1648 | { | |
27394598 | 1649 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len); |
1e3ff5ad AC |
1650 | } |
1651 | ||
13547ab6 | 1652 | static LONGEST |
1e3ff5ad AC |
1653 | target_write_partial (struct target_ops *ops, |
1654 | enum target_object object, | |
1b0ba102 | 1655 | const char *annex, const gdb_byte *buf, |
1e3ff5ad AC |
1656 | ULONGEST offset, LONGEST len) |
1657 | { | |
27394598 | 1658 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len); |
1e3ff5ad AC |
1659 | } |
1660 | ||
1661 | /* Wrappers to perform the full transfer. */ | |
1662 | LONGEST | |
1663 | target_read (struct target_ops *ops, | |
1664 | enum target_object object, | |
1b0ba102 | 1665 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1666 | ULONGEST offset, LONGEST len) |
1667 | { | |
1668 | LONGEST xfered = 0; | |
1669 | while (xfered < len) | |
1670 | { | |
0088c768 | 1671 | LONGEST xfer = target_read_partial (ops, object, annex, |
fc1a4b47 | 1672 | (gdb_byte *) buf + xfered, |
0088c768 | 1673 | offset + xfered, len - xfered); |
1e3ff5ad | 1674 | /* Call an observer, notifying them of the xfer progress? */ |
13547ab6 DJ |
1675 | if (xfer == 0) |
1676 | return xfered; | |
1677 | if (xfer < 0) | |
0088c768 | 1678 | return -1; |
1e3ff5ad AC |
1679 | xfered += xfer; |
1680 | QUIT; | |
1681 | } | |
1682 | return len; | |
1683 | } | |
1684 | ||
d5086790 VP |
1685 | LONGEST |
1686 | target_read_until_error (struct target_ops *ops, | |
1687 | enum target_object object, | |
1688 | const char *annex, gdb_byte *buf, | |
1689 | ULONGEST offset, LONGEST len) | |
1690 | { | |
1691 | LONGEST xfered = 0; | |
1692 | while (xfered < len) | |
1693 | { | |
1694 | LONGEST xfer = target_read_partial (ops, object, annex, | |
1695 | (gdb_byte *) buf + xfered, | |
1696 | offset + xfered, len - xfered); | |
1697 | /* Call an observer, notifying them of the xfer progress? */ | |
1698 | if (xfer == 0) | |
1699 | return xfered; | |
1700 | if (xfer < 0) | |
1701 | { | |
1702 | /* We've got an error. Try to read in smaller blocks. */ | |
1703 | ULONGEST start = offset + xfered; | |
1704 | ULONGEST remaining = len - xfered; | |
1705 | ULONGEST half; | |
1706 | ||
1707 | /* If an attempt was made to read a random memory address, | |
1708 | it's likely that the very first byte is not accessible. | |
1709 | Try reading the first byte, to avoid doing log N tries | |
1710 | below. */ | |
1711 | xfer = target_read_partial (ops, object, annex, | |
1712 | (gdb_byte *) buf + xfered, start, 1); | |
1713 | if (xfer <= 0) | |
1714 | return xfered; | |
1715 | start += 1; | |
1716 | remaining -= 1; | |
1717 | half = remaining/2; | |
1718 | ||
1719 | while (half > 0) | |
1720 | { | |
1721 | xfer = target_read_partial (ops, object, annex, | |
1722 | (gdb_byte *) buf + xfered, | |
1723 | start, half); | |
1724 | if (xfer == 0) | |
1725 | return xfered; | |
1726 | if (xfer < 0) | |
1727 | { | |
1728 | remaining = half; | |
1729 | } | |
1730 | else | |
1731 | { | |
1732 | /* We have successfully read the first half. So, the | |
1733 | error must be in the second half. Adjust start and | |
1734 | remaining to point at the second half. */ | |
1735 | xfered += xfer; | |
1736 | start += xfer; | |
1737 | remaining -= xfer; | |
1738 | } | |
1739 | half = remaining/2; | |
1740 | } | |
1741 | ||
1742 | return xfered; | |
1743 | } | |
1744 | xfered += xfer; | |
1745 | QUIT; | |
1746 | } | |
1747 | return len; | |
1748 | } | |
1749 | ||
1750 | ||
cf7a04e8 DJ |
1751 | /* An alternative to target_write with progress callbacks. */ |
1752 | ||
1e3ff5ad | 1753 | LONGEST |
cf7a04e8 DJ |
1754 | target_write_with_progress (struct target_ops *ops, |
1755 | enum target_object object, | |
1756 | const char *annex, const gdb_byte *buf, | |
1757 | ULONGEST offset, LONGEST len, | |
1758 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad AC |
1759 | { |
1760 | LONGEST xfered = 0; | |
a76d924d DJ |
1761 | |
1762 | /* Give the progress callback a chance to set up. */ | |
1763 | if (progress) | |
1764 | (*progress) (0, baton); | |
1765 | ||
1e3ff5ad AC |
1766 | while (xfered < len) |
1767 | { | |
1768 | LONGEST xfer = target_write_partial (ops, object, annex, | |
fc1a4b47 | 1769 | (gdb_byte *) buf + xfered, |
1e3ff5ad | 1770 | offset + xfered, len - xfered); |
cf7a04e8 | 1771 | |
13547ab6 DJ |
1772 | if (xfer == 0) |
1773 | return xfered; | |
1774 | if (xfer < 0) | |
0088c768 | 1775 | return -1; |
cf7a04e8 DJ |
1776 | |
1777 | if (progress) | |
1778 | (*progress) (xfer, baton); | |
1779 | ||
1e3ff5ad AC |
1780 | xfered += xfer; |
1781 | QUIT; | |
1782 | } | |
1783 | return len; | |
1784 | } | |
1785 | ||
cf7a04e8 DJ |
1786 | LONGEST |
1787 | target_write (struct target_ops *ops, | |
1788 | enum target_object object, | |
1789 | const char *annex, const gdb_byte *buf, | |
1790 | ULONGEST offset, LONGEST len) | |
1791 | { | |
1792 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
1793 | NULL, NULL); | |
1794 | } | |
1795 | ||
159f81f3 DJ |
1796 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
1797 | the size of the transferred data. PADDING additional bytes are | |
1798 | available in *BUF_P. This is a helper function for | |
1799 | target_read_alloc; see the declaration of that function for more | |
1800 | information. */ | |
13547ab6 | 1801 | |
159f81f3 DJ |
1802 | static LONGEST |
1803 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, | |
1804 | const char *annex, gdb_byte **buf_p, int padding) | |
13547ab6 DJ |
1805 | { |
1806 | size_t buf_alloc, buf_pos; | |
1807 | gdb_byte *buf; | |
1808 | LONGEST n; | |
1809 | ||
1810 | /* This function does not have a length parameter; it reads the | |
1811 | entire OBJECT). Also, it doesn't support objects fetched partly | |
1812 | from one target and partly from another (in a different stratum, | |
1813 | e.g. a core file and an executable). Both reasons make it | |
1814 | unsuitable for reading memory. */ | |
1815 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
1816 | ||
1817 | /* Start by reading up to 4K at a time. The target will throttle | |
1818 | this number down if necessary. */ | |
1819 | buf_alloc = 4096; | |
1820 | buf = xmalloc (buf_alloc); | |
1821 | buf_pos = 0; | |
1822 | while (1) | |
1823 | { | |
1824 | n = target_read_partial (ops, object, annex, &buf[buf_pos], | |
159f81f3 | 1825 | buf_pos, buf_alloc - buf_pos - padding); |
13547ab6 DJ |
1826 | if (n < 0) |
1827 | { | |
1828 | /* An error occurred. */ | |
1829 | xfree (buf); | |
1830 | return -1; | |
1831 | } | |
1832 | else if (n == 0) | |
1833 | { | |
1834 | /* Read all there was. */ | |
1835 | if (buf_pos == 0) | |
1836 | xfree (buf); | |
1837 | else | |
1838 | *buf_p = buf; | |
1839 | return buf_pos; | |
1840 | } | |
1841 | ||
1842 | buf_pos += n; | |
1843 | ||
1844 | /* If the buffer is filling up, expand it. */ | |
1845 | if (buf_alloc < buf_pos * 2) | |
1846 | { | |
1847 | buf_alloc *= 2; | |
1848 | buf = xrealloc (buf, buf_alloc); | |
1849 | } | |
1850 | ||
1851 | QUIT; | |
1852 | } | |
1853 | } | |
1854 | ||
159f81f3 DJ |
1855 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
1856 | the size of the transferred data. See the declaration in "target.h" | |
1857 | function for more information about the return value. */ | |
1858 | ||
1859 | LONGEST | |
1860 | target_read_alloc (struct target_ops *ops, enum target_object object, | |
1861 | const char *annex, gdb_byte **buf_p) | |
1862 | { | |
1863 | return target_read_alloc_1 (ops, object, annex, buf_p, 0); | |
1864 | } | |
1865 | ||
1866 | /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and | |
1867 | returned as a string, allocated using xmalloc. If an error occurs | |
1868 | or the transfer is unsupported, NULL is returned. Empty objects | |
1869 | are returned as allocated but empty strings. A warning is issued | |
1870 | if the result contains any embedded NUL bytes. */ | |
1871 | ||
1872 | char * | |
1873 | target_read_stralloc (struct target_ops *ops, enum target_object object, | |
1874 | const char *annex) | |
1875 | { | |
1876 | gdb_byte *buffer; | |
1877 | LONGEST transferred; | |
1878 | ||
1879 | transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1); | |
1880 | ||
1881 | if (transferred < 0) | |
1882 | return NULL; | |
1883 | ||
1884 | if (transferred == 0) | |
1885 | return xstrdup (""); | |
1886 | ||
1887 | buffer[transferred] = 0; | |
1888 | if (strlen (buffer) < transferred) | |
1889 | warning (_("target object %d, annex %s, " | |
1890 | "contained unexpected null characters"), | |
1891 | (int) object, annex ? annex : "(none)"); | |
1892 | ||
1893 | return (char *) buffer; | |
1894 | } | |
1895 | ||
b6591e8b AC |
1896 | /* Memory transfer methods. */ |
1897 | ||
1898 | void | |
1b0ba102 | 1899 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
1900 | LONGEST len) |
1901 | { | |
07b82ea5 PA |
1902 | /* This method is used to read from an alternate, non-current |
1903 | target. This read must bypass the overlay support (as symbols | |
1904 | don't match this target), and GDB's internal cache (wrong cache | |
1905 | for this target). */ | |
1906 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) | |
b6591e8b AC |
1907 | != len) |
1908 | memory_error (EIO, addr); | |
1909 | } | |
1910 | ||
1911 | ULONGEST | |
1912 | get_target_memory_unsigned (struct target_ops *ops, | |
e17a4113 | 1913 | CORE_ADDR addr, int len, enum bfd_endian byte_order) |
b6591e8b | 1914 | { |
f6519ebc | 1915 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
1916 | |
1917 | gdb_assert (len <= sizeof (buf)); | |
1918 | get_target_memory (ops, addr, buf, len); | |
e17a4113 | 1919 | return extract_unsigned_integer (buf, len, byte_order); |
b6591e8b AC |
1920 | } |
1921 | ||
c906108c | 1922 | static void |
fba45db2 | 1923 | target_info (char *args, int from_tty) |
c906108c SS |
1924 | { |
1925 | struct target_ops *t; | |
c906108c | 1926 | int has_all_mem = 0; |
c5aa993b | 1927 | |
c906108c | 1928 | if (symfile_objfile != NULL) |
a3f17187 | 1929 | printf_unfiltered (_("Symbols from \"%s\".\n"), symfile_objfile->name); |
c906108c | 1930 | |
258b763a | 1931 | for (t = target_stack; t != NULL; t = t->beneath) |
c906108c | 1932 | { |
c35b1492 | 1933 | if (!(*t->to_has_memory) (t)) |
c906108c SS |
1934 | continue; |
1935 | ||
c5aa993b | 1936 | if ((int) (t->to_stratum) <= (int) dummy_stratum) |
c906108c SS |
1937 | continue; |
1938 | if (has_all_mem) | |
a3f17187 | 1939 | printf_unfiltered (_("\tWhile running this, GDB does not access memory from...\n")); |
c5aa993b JM |
1940 | printf_unfiltered ("%s:\n", t->to_longname); |
1941 | (t->to_files_info) (t); | |
c35b1492 | 1942 | has_all_mem = (*t->to_has_all_memory) (t); |
c906108c SS |
1943 | } |
1944 | } | |
1945 | ||
fd79ecee DJ |
1946 | /* This function is called before any new inferior is created, e.g. |
1947 | by running a program, attaching, or connecting to a target. | |
1948 | It cleans up any state from previous invocations which might | |
1949 | change between runs. This is a subset of what target_preopen | |
1950 | resets (things which might change between targets). */ | |
1951 | ||
1952 | void | |
1953 | target_pre_inferior (int from_tty) | |
1954 | { | |
b9db4ced UW |
1955 | /* Clear out solib state. Otherwise the solib state of the previous |
1956 | inferior might have survived and is entirely wrong for the new | |
1957 | target. This has been observed on GNU/Linux using glibc 2.3. How | |
1958 | to reproduce: | |
1959 | ||
1960 | bash$ ./foo& | |
1961 | [1] 4711 | |
1962 | bash$ ./foo& | |
1963 | [1] 4712 | |
1964 | bash$ gdb ./foo | |
1965 | [...] | |
1966 | (gdb) attach 4711 | |
1967 | (gdb) detach | |
1968 | (gdb) attach 4712 | |
1969 | Cannot access memory at address 0xdeadbeef | |
1970 | */ | |
b9db4ced | 1971 | |
50c71eaf PA |
1972 | /* In some OSs, the shared library list is the same/global/shared |
1973 | across inferiors. If code is shared between processes, so are | |
1974 | memory regions and features. */ | |
1975 | if (!gdbarch_has_global_solist (target_gdbarch)) | |
1976 | { | |
1977 | no_shared_libraries (NULL, from_tty); | |
1978 | ||
1979 | invalidate_target_mem_regions (); | |
424163ea | 1980 | |
50c71eaf PA |
1981 | target_clear_description (); |
1982 | } | |
fd79ecee DJ |
1983 | } |
1984 | ||
b8fa0bfa PA |
1985 | /* Callback for iterate_over_inferiors. Gets rid of the given |
1986 | inferior. */ | |
1987 | ||
1988 | static int | |
1989 | dispose_inferior (struct inferior *inf, void *args) | |
1990 | { | |
1991 | struct thread_info *thread; | |
1992 | ||
1993 | thread = any_thread_of_process (inf->pid); | |
1994 | if (thread) | |
1995 | { | |
1996 | switch_to_thread (thread->ptid); | |
1997 | ||
1998 | /* Core inferiors actually should be detached, not killed. */ | |
1999 | if (target_has_execution) | |
2000 | target_kill (); | |
2001 | else | |
2002 | target_detach (NULL, 0); | |
2003 | } | |
2004 | ||
2005 | return 0; | |
2006 | } | |
2007 | ||
c906108c SS |
2008 | /* This is to be called by the open routine before it does |
2009 | anything. */ | |
2010 | ||
2011 | void | |
fba45db2 | 2012 | target_preopen (int from_tty) |
c906108c | 2013 | { |
c5aa993b | 2014 | dont_repeat (); |
c906108c | 2015 | |
b8fa0bfa | 2016 | if (have_inferiors ()) |
c5aa993b | 2017 | { |
adf40b2e | 2018 | if (!from_tty |
b8fa0bfa PA |
2019 | || !have_live_inferiors () |
2020 | || query (_("A program is being debugged already. Kill it? "))) | |
2021 | iterate_over_inferiors (dispose_inferior, NULL); | |
c906108c | 2022 | else |
8a3fe4f8 | 2023 | error (_("Program not killed.")); |
c906108c SS |
2024 | } |
2025 | ||
2026 | /* Calling target_kill may remove the target from the stack. But if | |
2027 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
2028 | /* Leave the exec target, though. The user may be switching from a |
2029 | live process to a core of the same program. */ | |
2030 | pop_all_targets_above (file_stratum, 0); | |
fd79ecee DJ |
2031 | |
2032 | target_pre_inferior (from_tty); | |
c906108c SS |
2033 | } |
2034 | ||
2035 | /* Detach a target after doing deferred register stores. */ | |
2036 | ||
2037 | void | |
fba45db2 | 2038 | target_detach (char *args, int from_tty) |
c906108c | 2039 | { |
136d6dae VP |
2040 | struct target_ops* t; |
2041 | ||
2567c7d9 | 2042 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
2043 | /* Don't remove global breakpoints here. They're removed on |
2044 | disconnection from the target. */ | |
2045 | ; | |
2046 | else | |
2047 | /* If we're in breakpoints-always-inserted mode, have to remove | |
2048 | them before detaching. */ | |
2049 | remove_breakpoints (); | |
74960c60 | 2050 | |
136d6dae VP |
2051 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2052 | { | |
2053 | if (t->to_detach != NULL) | |
2054 | { | |
2055 | t->to_detach (t, args, from_tty); | |
947b8855 PA |
2056 | if (targetdebug) |
2057 | fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n", | |
2058 | args, from_tty); | |
136d6dae VP |
2059 | return; |
2060 | } | |
2061 | } | |
2062 | ||
2063 | internal_error (__FILE__, __LINE__, "could not find a target to detach"); | |
c906108c SS |
2064 | } |
2065 | ||
6ad8ae5c DJ |
2066 | void |
2067 | target_disconnect (char *args, int from_tty) | |
2068 | { | |
597320e7 DJ |
2069 | struct target_ops *t; |
2070 | ||
50c71eaf PA |
2071 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
2072 | are global across processes, we have to remove them before | |
2073 | disconnecting. */ | |
74960c60 VP |
2074 | remove_breakpoints (); |
2075 | ||
597320e7 DJ |
2076 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2077 | if (t->to_disconnect != NULL) | |
2078 | { | |
2079 | if (targetdebug) | |
2080 | fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n", | |
2081 | args, from_tty); | |
2082 | t->to_disconnect (t, args, from_tty); | |
2083 | return; | |
2084 | } | |
2085 | ||
2086 | tcomplain (); | |
6ad8ae5c DJ |
2087 | } |
2088 | ||
117de6a9 | 2089 | ptid_t |
47608cb1 | 2090 | target_wait (ptid_t ptid, struct target_waitstatus *status, int options) |
117de6a9 PA |
2091 | { |
2092 | struct target_ops *t; | |
2093 | ||
2094 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2095 | { | |
2096 | if (t->to_wait != NULL) | |
2097 | { | |
47608cb1 | 2098 | ptid_t retval = (*t->to_wait) (t, ptid, status, options); |
117de6a9 PA |
2099 | |
2100 | if (targetdebug) | |
2101 | { | |
2102 | char *status_string; | |
2103 | ||
2104 | status_string = target_waitstatus_to_string (status); | |
2105 | fprintf_unfiltered (gdb_stdlog, | |
2106 | "target_wait (%d, status) = %d, %s\n", | |
2107 | PIDGET (ptid), PIDGET (retval), | |
2108 | status_string); | |
2109 | xfree (status_string); | |
2110 | } | |
2111 | ||
2112 | return retval; | |
2113 | } | |
2114 | } | |
2115 | ||
2116 | noprocess (); | |
2117 | } | |
2118 | ||
2119 | char * | |
2120 | target_pid_to_str (ptid_t ptid) | |
2121 | { | |
2122 | struct target_ops *t; | |
2123 | ||
2124 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2125 | { | |
2126 | if (t->to_pid_to_str != NULL) | |
2127 | return (*t->to_pid_to_str) (t, ptid); | |
2128 | } | |
2129 | ||
2130 | return normal_pid_to_str (ptid); | |
2131 | } | |
2132 | ||
e1ac3328 VP |
2133 | void |
2134 | target_resume (ptid_t ptid, int step, enum target_signal signal) | |
2135 | { | |
28439f5e PA |
2136 | struct target_ops *t; |
2137 | ||
4e5d721f | 2138 | target_dcache_invalidate (); |
28439f5e PA |
2139 | |
2140 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2141 | { | |
2142 | if (t->to_resume != NULL) | |
2143 | { | |
2144 | t->to_resume (t, ptid, step, signal); | |
2145 | if (targetdebug) | |
2146 | fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n", | |
2147 | PIDGET (ptid), | |
2148 | step ? "step" : "continue", | |
2149 | target_signal_to_name (signal)); | |
2150 | ||
2151 | set_executing (ptid, 1); | |
2152 | set_running (ptid, 1); | |
edb3359d | 2153 | clear_inline_frame_state (ptid); |
28439f5e PA |
2154 | return; |
2155 | } | |
2156 | } | |
2157 | ||
2158 | noprocess (); | |
e1ac3328 | 2159 | } |
ee057212 DJ |
2160 | /* Look through the list of possible targets for a target that can |
2161 | follow forks. */ | |
2162 | ||
2163 | int | |
2164 | target_follow_fork (int follow_child) | |
2165 | { | |
2166 | struct target_ops *t; | |
2167 | ||
2168 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2169 | { | |
2170 | if (t->to_follow_fork != NULL) | |
2171 | { | |
2172 | int retval = t->to_follow_fork (t, follow_child); | |
2173 | if (targetdebug) | |
2174 | fprintf_unfiltered (gdb_stdlog, "target_follow_fork (%d) = %d\n", | |
2175 | follow_child, retval); | |
2176 | return retval; | |
2177 | } | |
2178 | } | |
2179 | ||
2180 | /* Some target returned a fork event, but did not know how to follow it. */ | |
2181 | internal_error (__FILE__, __LINE__, | |
2182 | "could not find a target to follow fork"); | |
2183 | } | |
2184 | ||
136d6dae VP |
2185 | void |
2186 | target_mourn_inferior (void) | |
2187 | { | |
2188 | struct target_ops *t; | |
2189 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2190 | { | |
2191 | if (t->to_mourn_inferior != NULL) | |
2192 | { | |
2193 | t->to_mourn_inferior (t); | |
947b8855 PA |
2194 | if (targetdebug) |
2195 | fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n"); | |
efbd6e75 JB |
2196 | |
2197 | /* We no longer need to keep handles on any of the object files. | |
2198 | Make sure to release them to avoid unnecessarily locking any | |
2199 | of them while we're not actually debugging. */ | |
2200 | bfd_cache_close_all (); | |
2201 | ||
136d6dae VP |
2202 | return; |
2203 | } | |
2204 | } | |
2205 | ||
2206 | internal_error (__FILE__, __LINE__, | |
2207 | "could not find a target to follow mourn inferiour"); | |
2208 | } | |
2209 | ||
424163ea DJ |
2210 | /* Look for a target which can describe architectural features, starting |
2211 | from TARGET. If we find one, return its description. */ | |
2212 | ||
2213 | const struct target_desc * | |
2214 | target_read_description (struct target_ops *target) | |
2215 | { | |
2216 | struct target_ops *t; | |
2217 | ||
2218 | for (t = target; t != NULL; t = t->beneath) | |
2219 | if (t->to_read_description != NULL) | |
2220 | { | |
2221 | const struct target_desc *tdesc; | |
2222 | ||
2223 | tdesc = t->to_read_description (t); | |
2224 | if (tdesc) | |
2225 | return tdesc; | |
2226 | } | |
2227 | ||
2228 | return NULL; | |
2229 | } | |
2230 | ||
08388c79 DE |
2231 | /* The default implementation of to_search_memory. |
2232 | This implements a basic search of memory, reading target memory and | |
2233 | performing the search here (as opposed to performing the search in on the | |
2234 | target side with, for example, gdbserver). */ | |
2235 | ||
2236 | int | |
2237 | simple_search_memory (struct target_ops *ops, | |
2238 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2239 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2240 | CORE_ADDR *found_addrp) | |
2241 | { | |
2242 | /* NOTE: also defined in find.c testcase. */ | |
2243 | #define SEARCH_CHUNK_SIZE 16000 | |
2244 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
2245 | /* Buffer to hold memory contents for searching. */ | |
2246 | gdb_byte *search_buf; | |
2247 | unsigned search_buf_size; | |
2248 | struct cleanup *old_cleanups; | |
2249 | ||
2250 | search_buf_size = chunk_size + pattern_len - 1; | |
2251 | ||
2252 | /* No point in trying to allocate a buffer larger than the search space. */ | |
2253 | if (search_space_len < search_buf_size) | |
2254 | search_buf_size = search_space_len; | |
2255 | ||
2256 | search_buf = malloc (search_buf_size); | |
2257 | if (search_buf == NULL) | |
5e1471f5 | 2258 | error (_("Unable to allocate memory to perform the search.")); |
08388c79 DE |
2259 | old_cleanups = make_cleanup (free_current_contents, &search_buf); |
2260 | ||
2261 | /* Prime the search buffer. */ | |
2262 | ||
2263 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2264 | search_buf, start_addr, search_buf_size) != search_buf_size) | |
2265 | { | |
5e1471f5 | 2266 | warning (_("Unable to access target memory at %s, halting search."), |
08388c79 DE |
2267 | hex_string (start_addr)); |
2268 | do_cleanups (old_cleanups); | |
2269 | return -1; | |
2270 | } | |
2271 | ||
2272 | /* Perform the search. | |
2273 | ||
2274 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
2275 | When we've scanned N bytes we copy the trailing bytes to the start and | |
2276 | read in another N bytes. */ | |
2277 | ||
2278 | while (search_space_len >= pattern_len) | |
2279 | { | |
2280 | gdb_byte *found_ptr; | |
2281 | unsigned nr_search_bytes = min (search_space_len, search_buf_size); | |
2282 | ||
2283 | found_ptr = memmem (search_buf, nr_search_bytes, | |
2284 | pattern, pattern_len); | |
2285 | ||
2286 | if (found_ptr != NULL) | |
2287 | { | |
2288 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
2289 | *found_addrp = found_addr; | |
2290 | do_cleanups (old_cleanups); | |
2291 | return 1; | |
2292 | } | |
2293 | ||
2294 | /* Not found in this chunk, skip to next chunk. */ | |
2295 | ||
2296 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
2297 | if (search_space_len >= chunk_size) | |
2298 | search_space_len -= chunk_size; | |
2299 | else | |
2300 | search_space_len = 0; | |
2301 | ||
2302 | if (search_space_len >= pattern_len) | |
2303 | { | |
2304 | unsigned keep_len = search_buf_size - chunk_size; | |
2305 | CORE_ADDR read_addr = start_addr + keep_len; | |
2306 | int nr_to_read; | |
2307 | ||
2308 | /* Copy the trailing part of the previous iteration to the front | |
2309 | of the buffer for the next iteration. */ | |
2310 | gdb_assert (keep_len == pattern_len - 1); | |
2311 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
2312 | ||
2313 | nr_to_read = min (search_space_len - keep_len, chunk_size); | |
2314 | ||
2315 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2316 | search_buf + keep_len, read_addr, | |
2317 | nr_to_read) != nr_to_read) | |
2318 | { | |
5e1471f5 | 2319 | warning (_("Unable to access target memory at %s, halting search."), |
08388c79 DE |
2320 | hex_string (read_addr)); |
2321 | do_cleanups (old_cleanups); | |
2322 | return -1; | |
2323 | } | |
2324 | ||
2325 | start_addr += chunk_size; | |
2326 | } | |
2327 | } | |
2328 | ||
2329 | /* Not found. */ | |
2330 | ||
2331 | do_cleanups (old_cleanups); | |
2332 | return 0; | |
2333 | } | |
2334 | ||
2335 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the | |
2336 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2337 | ||
2338 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2339 | requiring halting of the search (e.g. memory read error). | |
2340 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2341 | ||
2342 | int | |
2343 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2344 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2345 | CORE_ADDR *found_addrp) | |
2346 | { | |
2347 | struct target_ops *t; | |
2348 | int found; | |
2349 | ||
2350 | /* We don't use INHERIT to set current_target.to_search_memory, | |
2351 | so we have to scan the target stack and handle targetdebug | |
2352 | ourselves. */ | |
2353 | ||
2354 | if (targetdebug) | |
2355 | fprintf_unfiltered (gdb_stdlog, "target_search_memory (%s, ...)\n", | |
2356 | hex_string (start_addr)); | |
2357 | ||
2358 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2359 | if (t->to_search_memory != NULL) | |
2360 | break; | |
2361 | ||
2362 | if (t != NULL) | |
2363 | { | |
2364 | found = t->to_search_memory (t, start_addr, search_space_len, | |
2365 | pattern, pattern_len, found_addrp); | |
2366 | } | |
2367 | else | |
2368 | { | |
2369 | /* If a special version of to_search_memory isn't available, use the | |
2370 | simple version. */ | |
c35b1492 | 2371 | found = simple_search_memory (current_target.beneath, |
08388c79 DE |
2372 | start_addr, search_space_len, |
2373 | pattern, pattern_len, found_addrp); | |
2374 | } | |
2375 | ||
2376 | if (targetdebug) | |
2377 | fprintf_unfiltered (gdb_stdlog, " = %d\n", found); | |
2378 | ||
2379 | return found; | |
2380 | } | |
2381 | ||
8edfe269 DJ |
2382 | /* Look through the currently pushed targets. If none of them will |
2383 | be able to restart the currently running process, issue an error | |
2384 | message. */ | |
2385 | ||
2386 | void | |
2387 | target_require_runnable (void) | |
2388 | { | |
2389 | struct target_ops *t; | |
2390 | ||
2391 | for (t = target_stack; t != NULL; t = t->beneath) | |
2392 | { | |
2393 | /* If this target knows how to create a new program, then | |
2394 | assume we will still be able to after killing the current | |
2395 | one. Either killing and mourning will not pop T, or else | |
2396 | find_default_run_target will find it again. */ | |
2397 | if (t->to_create_inferior != NULL) | |
2398 | return; | |
2399 | ||
2400 | /* Do not worry about thread_stratum targets that can not | |
2401 | create inferiors. Assume they will be pushed again if | |
2402 | necessary, and continue to the process_stratum. */ | |
85e747d2 UW |
2403 | if (t->to_stratum == thread_stratum |
2404 | || t->to_stratum == arch_stratum) | |
8edfe269 DJ |
2405 | continue; |
2406 | ||
2407 | error (_("\ | |
2408 | The \"%s\" target does not support \"run\". Try \"help target\" or \"continue\"."), | |
2409 | t->to_shortname); | |
2410 | } | |
2411 | ||
2412 | /* This function is only called if the target is running. In that | |
2413 | case there should have been a process_stratum target and it | |
2414 | should either know how to create inferiors, or not... */ | |
2415 | internal_error (__FILE__, __LINE__, "No targets found"); | |
2416 | } | |
2417 | ||
c906108c SS |
2418 | /* Look through the list of possible targets for a target that can |
2419 | execute a run or attach command without any other data. This is | |
2420 | used to locate the default process stratum. | |
2421 | ||
5f667f2d PA |
2422 | If DO_MESG is not NULL, the result is always valid (error() is |
2423 | called for errors); else, return NULL on error. */ | |
c906108c SS |
2424 | |
2425 | static struct target_ops * | |
fba45db2 | 2426 | find_default_run_target (char *do_mesg) |
c906108c SS |
2427 | { |
2428 | struct target_ops **t; | |
2429 | struct target_ops *runable = NULL; | |
2430 | int count; | |
2431 | ||
2432 | count = 0; | |
2433 | ||
2434 | for (t = target_structs; t < target_structs + target_struct_size; | |
2435 | ++t) | |
2436 | { | |
c5aa993b | 2437 | if ((*t)->to_can_run && target_can_run (*t)) |
c906108c SS |
2438 | { |
2439 | runable = *t; | |
2440 | ++count; | |
2441 | } | |
2442 | } | |
2443 | ||
2444 | if (count != 1) | |
5f667f2d PA |
2445 | { |
2446 | if (do_mesg) | |
2447 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
2448 | else | |
2449 | return NULL; | |
2450 | } | |
c906108c SS |
2451 | |
2452 | return runable; | |
2453 | } | |
2454 | ||
2455 | void | |
136d6dae | 2456 | find_default_attach (struct target_ops *ops, char *args, int from_tty) |
c906108c SS |
2457 | { |
2458 | struct target_ops *t; | |
2459 | ||
c5aa993b | 2460 | t = find_default_run_target ("attach"); |
136d6dae | 2461 | (t->to_attach) (t, args, from_tty); |
c906108c SS |
2462 | return; |
2463 | } | |
2464 | ||
c906108c | 2465 | void |
136d6dae VP |
2466 | find_default_create_inferior (struct target_ops *ops, |
2467 | char *exec_file, char *allargs, char **env, | |
c27cda74 | 2468 | int from_tty) |
c906108c SS |
2469 | { |
2470 | struct target_ops *t; | |
2471 | ||
c5aa993b | 2472 | t = find_default_run_target ("run"); |
136d6dae | 2473 | (t->to_create_inferior) (t, exec_file, allargs, env, from_tty); |
c906108c SS |
2474 | return; |
2475 | } | |
2476 | ||
2c0b251b | 2477 | static int |
b84876c2 PA |
2478 | find_default_can_async_p (void) |
2479 | { | |
2480 | struct target_ops *t; | |
2481 | ||
5f667f2d PA |
2482 | /* This may be called before the target is pushed on the stack; |
2483 | look for the default process stratum. If there's none, gdb isn't | |
2484 | configured with a native debugger, and target remote isn't | |
2485 | connected yet. */ | |
2486 | t = find_default_run_target (NULL); | |
2487 | if (t && t->to_can_async_p) | |
b84876c2 PA |
2488 | return (t->to_can_async_p) (); |
2489 | return 0; | |
2490 | } | |
2491 | ||
2c0b251b | 2492 | static int |
b84876c2 PA |
2493 | find_default_is_async_p (void) |
2494 | { | |
2495 | struct target_ops *t; | |
2496 | ||
5f667f2d PA |
2497 | /* This may be called before the target is pushed on the stack; |
2498 | look for the default process stratum. If there's none, gdb isn't | |
2499 | configured with a native debugger, and target remote isn't | |
2500 | connected yet. */ | |
2501 | t = find_default_run_target (NULL); | |
2502 | if (t && t->to_is_async_p) | |
b84876c2 PA |
2503 | return (t->to_is_async_p) (); |
2504 | return 0; | |
2505 | } | |
2506 | ||
2c0b251b | 2507 | static int |
9908b566 VP |
2508 | find_default_supports_non_stop (void) |
2509 | { | |
2510 | struct target_ops *t; | |
2511 | ||
2512 | t = find_default_run_target (NULL); | |
2513 | if (t && t->to_supports_non_stop) | |
2514 | return (t->to_supports_non_stop) (); | |
2515 | return 0; | |
2516 | } | |
2517 | ||
2518 | int | |
2c0b251b | 2519 | target_supports_non_stop (void) |
9908b566 VP |
2520 | { |
2521 | struct target_ops *t; | |
2522 | for (t = ¤t_target; t != NULL; t = t->beneath) | |
2523 | if (t->to_supports_non_stop) | |
2524 | return t->to_supports_non_stop (); | |
2525 | ||
2526 | return 0; | |
2527 | } | |
2528 | ||
2529 | ||
07e059b5 VP |
2530 | char * |
2531 | target_get_osdata (const char *type) | |
2532 | { | |
2533 | char *document; | |
2534 | struct target_ops *t; | |
2535 | ||
739ef7fb PA |
2536 | /* If we're already connected to something that can get us OS |
2537 | related data, use it. Otherwise, try using the native | |
2538 | target. */ | |
2539 | if (current_target.to_stratum >= process_stratum) | |
6d097e65 | 2540 | t = current_target.beneath; |
739ef7fb PA |
2541 | else |
2542 | t = find_default_run_target ("get OS data"); | |
07e059b5 VP |
2543 | |
2544 | if (!t) | |
2545 | return NULL; | |
2546 | ||
6d097e65 | 2547 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
2548 | } |
2549 | ||
e0d24f8d WZ |
2550 | static int |
2551 | default_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
2552 | { | |
ffe5a37e | 2553 | return (len <= gdbarch_ptr_bit (target_gdbarch) / TARGET_CHAR_BIT); |
ccaa32c7 GS |
2554 | } |
2555 | ||
5009afc5 AS |
2556 | static int |
2557 | default_watchpoint_addr_within_range (struct target_ops *target, | |
2558 | CORE_ADDR addr, | |
2559 | CORE_ADDR start, int length) | |
2560 | { | |
2561 | return addr >= start && addr < start + length; | |
2562 | } | |
2563 | ||
c2250ad1 UW |
2564 | static struct gdbarch * |
2565 | default_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
2566 | { | |
2567 | return target_gdbarch; | |
2568 | } | |
2569 | ||
c906108c | 2570 | static int |
fba45db2 | 2571 | return_zero (void) |
c906108c SS |
2572 | { |
2573 | return 0; | |
2574 | } | |
2575 | ||
2576 | static int | |
fba45db2 | 2577 | return_one (void) |
c906108c SS |
2578 | { |
2579 | return 1; | |
2580 | } | |
2581 | ||
ccaa32c7 GS |
2582 | static int |
2583 | return_minus_one (void) | |
2584 | { | |
2585 | return -1; | |
2586 | } | |
2587 | ||
7a292a7a SS |
2588 | /* Find a single runnable target in the stack and return it. If for |
2589 | some reason there is more than one, return NULL. */ | |
2590 | ||
2591 | struct target_ops * | |
fba45db2 | 2592 | find_run_target (void) |
7a292a7a SS |
2593 | { |
2594 | struct target_ops **t; | |
2595 | struct target_ops *runable = NULL; | |
2596 | int count; | |
c5aa993b | 2597 | |
7a292a7a | 2598 | count = 0; |
c5aa993b | 2599 | |
7a292a7a SS |
2600 | for (t = target_structs; t < target_structs + target_struct_size; ++t) |
2601 | { | |
c5aa993b | 2602 | if ((*t)->to_can_run && target_can_run (*t)) |
7a292a7a SS |
2603 | { |
2604 | runable = *t; | |
2605 | ++count; | |
2606 | } | |
2607 | } | |
c5aa993b | 2608 | |
7a292a7a SS |
2609 | return (count == 1 ? runable : NULL); |
2610 | } | |
2611 | ||
ed9a39eb JM |
2612 | /* Find a single core_stratum target in the list of targets and return it. |
2613 | If for some reason there is more than one, return NULL. */ | |
2614 | ||
c906108c | 2615 | struct target_ops * |
fba45db2 | 2616 | find_core_target (void) |
c906108c SS |
2617 | { |
2618 | struct target_ops **t; | |
2619 | struct target_ops *runable = NULL; | |
2620 | int count; | |
c5aa993b | 2621 | |
c906108c | 2622 | count = 0; |
c5aa993b | 2623 | |
c906108c SS |
2624 | for (t = target_structs; t < target_structs + target_struct_size; |
2625 | ++t) | |
2626 | { | |
2627 | if ((*t)->to_stratum == core_stratum) | |
2628 | { | |
2629 | runable = *t; | |
2630 | ++count; | |
2631 | } | |
2632 | } | |
c5aa993b JM |
2633 | |
2634 | return (count == 1 ? runable : NULL); | |
c906108c | 2635 | } |
ed9a39eb JM |
2636 | |
2637 | /* | |
2638 | * Find the next target down the stack from the specified target. | |
2639 | */ | |
2640 | ||
2641 | struct target_ops * | |
fba45db2 | 2642 | find_target_beneath (struct target_ops *t) |
ed9a39eb | 2643 | { |
258b763a | 2644 | return t->beneath; |
ed9a39eb JM |
2645 | } |
2646 | ||
c906108c SS |
2647 | \f |
2648 | /* The inferior process has died. Long live the inferior! */ | |
2649 | ||
2650 | void | |
fba45db2 | 2651 | generic_mourn_inferior (void) |
c906108c | 2652 | { |
7f9f62ba | 2653 | ptid_t ptid; |
c906108c | 2654 | |
7f9f62ba | 2655 | ptid = inferior_ptid; |
39f77062 | 2656 | inferior_ptid = null_ptid; |
7f9f62ba PA |
2657 | |
2658 | if (!ptid_equal (ptid, null_ptid)) | |
2659 | { | |
2660 | int pid = ptid_get_pid (ptid); | |
2661 | delete_inferior (pid); | |
2662 | } | |
2663 | ||
c906108c SS |
2664 | breakpoint_init_inferior (inf_exited); |
2665 | registers_changed (); | |
2666 | ||
c906108c SS |
2667 | reopen_exec_file (); |
2668 | reinit_frame_cache (); | |
2669 | ||
9a4105ab AC |
2670 | if (deprecated_detach_hook) |
2671 | deprecated_detach_hook (); | |
c906108c SS |
2672 | } |
2673 | \f | |
8807d78b | 2674 | /* Helper function for child_wait and the derivatives of child_wait. |
c906108c SS |
2675 | HOSTSTATUS is the waitstatus from wait() or the equivalent; store our |
2676 | translation of that in OURSTATUS. */ | |
2677 | void | |
fba45db2 | 2678 | store_waitstatus (struct target_waitstatus *ourstatus, int hoststatus) |
c906108c | 2679 | { |
c906108c SS |
2680 | if (WIFEXITED (hoststatus)) |
2681 | { | |
2682 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
2683 | ourstatus->value.integer = WEXITSTATUS (hoststatus); | |
2684 | } | |
2685 | else if (!WIFSTOPPED (hoststatus)) | |
2686 | { | |
2687 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
2688 | ourstatus->value.sig = target_signal_from_host (WTERMSIG (hoststatus)); | |
2689 | } | |
2690 | else | |
2691 | { | |
2692 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
2693 | ourstatus->value.sig = target_signal_from_host (WSTOPSIG (hoststatus)); | |
2694 | } | |
2695 | } | |
2696 | \f | |
fd0a2a6f MK |
2697 | /* Convert a normal process ID to a string. Returns the string in a |
2698 | static buffer. */ | |
c906108c SS |
2699 | |
2700 | char * | |
39f77062 | 2701 | normal_pid_to_str (ptid_t ptid) |
c906108c | 2702 | { |
fd0a2a6f | 2703 | static char buf[32]; |
c906108c | 2704 | |
5fff8fc0 | 2705 | xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid)); |
c906108c SS |
2706 | return buf; |
2707 | } | |
2708 | ||
2c0b251b | 2709 | static char * |
117de6a9 PA |
2710 | dummy_pid_to_str (struct target_ops *ops, ptid_t ptid) |
2711 | { | |
2712 | return normal_pid_to_str (ptid); | |
2713 | } | |
2714 | ||
be4d1333 | 2715 | /* Error-catcher for target_find_memory_regions */ |
be4d1333 MS |
2716 | static int dummy_find_memory_regions (int (*ignore1) (), void *ignore2) |
2717 | { | |
8a3fe4f8 | 2718 | error (_("No target.")); |
be4d1333 MS |
2719 | return 0; |
2720 | } | |
2721 | ||
2722 | /* Error-catcher for target_make_corefile_notes */ | |
be4d1333 MS |
2723 | static char * dummy_make_corefile_notes (bfd *ignore1, int *ignore2) |
2724 | { | |
8a3fe4f8 | 2725 | error (_("No target.")); |
be4d1333 MS |
2726 | return NULL; |
2727 | } | |
2728 | ||
c906108c SS |
2729 | /* Set up the handful of non-empty slots needed by the dummy target |
2730 | vector. */ | |
2731 | ||
2732 | static void | |
fba45db2 | 2733 | init_dummy_target (void) |
c906108c SS |
2734 | { |
2735 | dummy_target.to_shortname = "None"; | |
2736 | dummy_target.to_longname = "None"; | |
2737 | dummy_target.to_doc = ""; | |
2738 | dummy_target.to_attach = find_default_attach; | |
136d6dae VP |
2739 | dummy_target.to_detach = |
2740 | (void (*)(struct target_ops *, char *, int))target_ignore; | |
c906108c | 2741 | dummy_target.to_create_inferior = find_default_create_inferior; |
b84876c2 PA |
2742 | dummy_target.to_can_async_p = find_default_can_async_p; |
2743 | dummy_target.to_is_async_p = find_default_is_async_p; | |
9908b566 | 2744 | dummy_target.to_supports_non_stop = find_default_supports_non_stop; |
117de6a9 | 2745 | dummy_target.to_pid_to_str = dummy_pid_to_str; |
c906108c | 2746 | dummy_target.to_stratum = dummy_stratum; |
be4d1333 MS |
2747 | dummy_target.to_find_memory_regions = dummy_find_memory_regions; |
2748 | dummy_target.to_make_corefile_notes = dummy_make_corefile_notes; | |
0b603eba | 2749 | dummy_target.to_xfer_partial = default_xfer_partial; |
c35b1492 PA |
2750 | dummy_target.to_has_all_memory = (int (*) (struct target_ops *)) return_zero; |
2751 | dummy_target.to_has_memory = (int (*) (struct target_ops *)) return_zero; | |
2752 | dummy_target.to_has_stack = (int (*) (struct target_ops *)) return_zero; | |
2753 | dummy_target.to_has_registers = (int (*) (struct target_ops *)) return_zero; | |
2754 | dummy_target.to_has_execution = (int (*) (struct target_ops *)) return_zero; | |
c906108c SS |
2755 | dummy_target.to_magic = OPS_MAGIC; |
2756 | } | |
c906108c | 2757 | \f |
c906108c | 2758 | static void |
fba45db2 | 2759 | debug_to_open (char *args, int from_tty) |
c906108c SS |
2760 | { |
2761 | debug_target.to_open (args, from_tty); | |
2762 | ||
96baa820 | 2763 | fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty); |
c906108c SS |
2764 | } |
2765 | ||
f1c07ab0 AC |
2766 | void |
2767 | target_close (struct target_ops *targ, int quitting) | |
2768 | { | |
2769 | if (targ->to_xclose != NULL) | |
2770 | targ->to_xclose (targ, quitting); | |
2771 | else if (targ->to_close != NULL) | |
2772 | targ->to_close (quitting); | |
947b8855 PA |
2773 | |
2774 | if (targetdebug) | |
2775 | fprintf_unfiltered (gdb_stdlog, "target_close (%d)\n", quitting); | |
f1c07ab0 AC |
2776 | } |
2777 | ||
136d6dae VP |
2778 | void |
2779 | target_attach (char *args, int from_tty) | |
2780 | { | |
2781 | struct target_ops *t; | |
2782 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2783 | { | |
2784 | if (t->to_attach != NULL) | |
2785 | { | |
2786 | t->to_attach (t, args, from_tty); | |
947b8855 PA |
2787 | if (targetdebug) |
2788 | fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n", | |
2789 | args, from_tty); | |
136d6dae VP |
2790 | return; |
2791 | } | |
2792 | } | |
2793 | ||
2794 | internal_error (__FILE__, __LINE__, | |
2795 | "could not find a target to attach"); | |
2796 | } | |
2797 | ||
28439f5e PA |
2798 | int |
2799 | target_thread_alive (ptid_t ptid) | |
c906108c | 2800 | { |
28439f5e PA |
2801 | struct target_ops *t; |
2802 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2803 | { | |
2804 | if (t->to_thread_alive != NULL) | |
2805 | { | |
2806 | int retval; | |
c906108c | 2807 | |
28439f5e PA |
2808 | retval = t->to_thread_alive (t, ptid); |
2809 | if (targetdebug) | |
2810 | fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n", | |
2811 | PIDGET (ptid), retval); | |
2812 | ||
2813 | return retval; | |
2814 | } | |
2815 | } | |
2816 | ||
2817 | return 0; | |
2818 | } | |
2819 | ||
2820 | void | |
2821 | target_find_new_threads (void) | |
2822 | { | |
2823 | struct target_ops *t; | |
2824 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2825 | { | |
2826 | if (t->to_find_new_threads != NULL) | |
2827 | { | |
2828 | t->to_find_new_threads (t); | |
2829 | if (targetdebug) | |
2830 | fprintf_unfiltered (gdb_stdlog, "target_find_new_threads ()\n"); | |
2831 | ||
2832 | return; | |
2833 | } | |
2834 | } | |
c906108c SS |
2835 | } |
2836 | ||
c906108c | 2837 | static void |
28439f5e | 2838 | debug_to_post_attach (int pid) |
c906108c | 2839 | { |
28439f5e | 2840 | debug_target.to_post_attach (pid); |
c906108c | 2841 | |
28439f5e | 2842 | fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid); |
c906108c SS |
2843 | } |
2844 | ||
f00150c9 DE |
2845 | /* Return a pretty printed form of target_waitstatus. |
2846 | Space for the result is malloc'd, caller must free. */ | |
c906108c | 2847 | |
f00150c9 DE |
2848 | char * |
2849 | target_waitstatus_to_string (const struct target_waitstatus *ws) | |
2850 | { | |
2851 | const char *kind_str = "status->kind = "; | |
c906108c | 2852 | |
f00150c9 | 2853 | switch (ws->kind) |
c906108c SS |
2854 | { |
2855 | case TARGET_WAITKIND_EXITED: | |
f00150c9 DE |
2856 | return xstrprintf ("%sexited, status = %d", |
2857 | kind_str, ws->value.integer); | |
c906108c | 2858 | case TARGET_WAITKIND_STOPPED: |
f00150c9 DE |
2859 | return xstrprintf ("%sstopped, signal = %s", |
2860 | kind_str, target_signal_to_name (ws->value.sig)); | |
c906108c | 2861 | case TARGET_WAITKIND_SIGNALLED: |
f00150c9 DE |
2862 | return xstrprintf ("%ssignalled, signal = %s", |
2863 | kind_str, target_signal_to_name (ws->value.sig)); | |
c906108c | 2864 | case TARGET_WAITKIND_LOADED: |
f00150c9 | 2865 | return xstrprintf ("%sloaded", kind_str); |
c906108c | 2866 | case TARGET_WAITKIND_FORKED: |
f00150c9 | 2867 | return xstrprintf ("%sforked", kind_str); |
c906108c | 2868 | case TARGET_WAITKIND_VFORKED: |
f00150c9 | 2869 | return xstrprintf ("%svforked", kind_str); |
c906108c | 2870 | case TARGET_WAITKIND_EXECD: |
f00150c9 DE |
2871 | return xstrprintf ("%sexecd", kind_str); |
2872 | case TARGET_WAITKIND_SYSCALL_ENTRY: | |
a96d9b2e | 2873 | return xstrprintf ("%sentered syscall", kind_str); |
f00150c9 | 2874 | case TARGET_WAITKIND_SYSCALL_RETURN: |
a96d9b2e | 2875 | return xstrprintf ("%sexited syscall", kind_str); |
c906108c | 2876 | case TARGET_WAITKIND_SPURIOUS: |
f00150c9 DE |
2877 | return xstrprintf ("%sspurious", kind_str); |
2878 | case TARGET_WAITKIND_IGNORE: | |
2879 | return xstrprintf ("%signore", kind_str); | |
2880 | case TARGET_WAITKIND_NO_HISTORY: | |
2881 | return xstrprintf ("%sno-history", kind_str); | |
c906108c | 2882 | default: |
f00150c9 | 2883 | return xstrprintf ("%sunknown???", kind_str); |
c906108c | 2884 | } |
f00150c9 DE |
2885 | } |
2886 | ||
bf0c5130 | 2887 | static void |
56be3814 UW |
2888 | debug_print_register (const char * func, |
2889 | struct regcache *regcache, int regno) | |
bf0c5130 | 2890 | { |
f8d29908 | 2891 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
bf0c5130 | 2892 | fprintf_unfiltered (gdb_stdlog, "%s ", func); |
f8d29908 | 2893 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) |
f8d29908 UW |
2894 | && gdbarch_register_name (gdbarch, regno) != NULL |
2895 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') | |
2896 | fprintf_unfiltered (gdb_stdlog, "(%s)", | |
2897 | gdbarch_register_name (gdbarch, regno)); | |
bf0c5130 AC |
2898 | else |
2899 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
0ff58721 | 2900 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) |
bf0c5130 | 2901 | { |
e17a4113 | 2902 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
f8d29908 | 2903 | int i, size = register_size (gdbarch, regno); |
d9d9c31f | 2904 | unsigned char buf[MAX_REGISTER_SIZE]; |
0ff58721 | 2905 | regcache_raw_collect (regcache, regno, buf); |
bf0c5130 | 2906 | fprintf_unfiltered (gdb_stdlog, " = "); |
81c4a259 | 2907 | for (i = 0; i < size; i++) |
bf0c5130 AC |
2908 | { |
2909 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
2910 | } | |
81c4a259 | 2911 | if (size <= sizeof (LONGEST)) |
bf0c5130 | 2912 | { |
e17a4113 | 2913 | ULONGEST val = extract_unsigned_integer (buf, size, byte_order); |
0b1553bc UW |
2914 | fprintf_unfiltered (gdb_stdlog, " %s %s", |
2915 | core_addr_to_string_nz (val), plongest (val)); | |
bf0c5130 AC |
2916 | } |
2917 | } | |
2918 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
2919 | } | |
2920 | ||
28439f5e PA |
2921 | void |
2922 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 2923 | { |
28439f5e PA |
2924 | struct target_ops *t; |
2925 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2926 | { | |
2927 | if (t->to_fetch_registers != NULL) | |
2928 | { | |
2929 | t->to_fetch_registers (t, regcache, regno); | |
2930 | if (targetdebug) | |
2931 | debug_print_register ("target_fetch_registers", regcache, regno); | |
2932 | return; | |
2933 | } | |
2934 | } | |
c906108c SS |
2935 | } |
2936 | ||
28439f5e PA |
2937 | void |
2938 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 2939 | { |
28439f5e PA |
2940 | |
2941 | struct target_ops *t; | |
2942 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2943 | { | |
2944 | if (t->to_store_registers != NULL) | |
2945 | { | |
2946 | t->to_store_registers (t, regcache, regno); | |
2947 | if (targetdebug) | |
2948 | { | |
2949 | debug_print_register ("target_store_registers", regcache, regno); | |
2950 | } | |
2951 | return; | |
2952 | } | |
2953 | } | |
2954 | ||
2955 | noprocess (); | |
c906108c SS |
2956 | } |
2957 | ||
2958 | static void | |
316f2060 | 2959 | debug_to_prepare_to_store (struct regcache *regcache) |
c906108c | 2960 | { |
316f2060 | 2961 | debug_target.to_prepare_to_store (regcache); |
c906108c | 2962 | |
96baa820 | 2963 | fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n"); |
c906108c SS |
2964 | } |
2965 | ||
2966 | static int | |
961cb7b5 | 2967 | deprecated_debug_xfer_memory (CORE_ADDR memaddr, bfd_byte *myaddr, int len, |
c8e73a31 AC |
2968 | int write, struct mem_attrib *attrib, |
2969 | struct target_ops *target) | |
c906108c SS |
2970 | { |
2971 | int retval; | |
2972 | ||
c8e73a31 AC |
2973 | retval = debug_target.deprecated_xfer_memory (memaddr, myaddr, len, write, |
2974 | attrib, target); | |
c906108c | 2975 | |
96baa820 | 2976 | fprintf_unfiltered (gdb_stdlog, |
53b71562 | 2977 | "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d", |
5af949e3 UW |
2978 | paddress (target_gdbarch, memaddr), len, |
2979 | write ? "write" : "read", retval); | |
c906108c | 2980 | |
c906108c SS |
2981 | if (retval > 0) |
2982 | { | |
2983 | int i; | |
2984 | ||
96baa820 | 2985 | fputs_unfiltered (", bytes =", gdb_stdlog); |
c906108c SS |
2986 | for (i = 0; i < retval; i++) |
2987 | { | |
53b71562 | 2988 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
333dabeb DJ |
2989 | { |
2990 | if (targetdebug < 2 && i > 0) | |
2991 | { | |
2992 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
2993 | break; | |
2994 | } | |
2995 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
2996 | } | |
2bc416ba | 2997 | |
96baa820 | 2998 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
c906108c SS |
2999 | } |
3000 | } | |
3001 | ||
96baa820 | 3002 | fputc_unfiltered ('\n', gdb_stdlog); |
c906108c SS |
3003 | |
3004 | return retval; | |
3005 | } | |
3006 | ||
3007 | static void | |
fba45db2 | 3008 | debug_to_files_info (struct target_ops *target) |
c906108c SS |
3009 | { |
3010 | debug_target.to_files_info (target); | |
3011 | ||
96baa820 | 3012 | fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n"); |
c906108c SS |
3013 | } |
3014 | ||
3015 | static int | |
a6d9a66e UW |
3016 | debug_to_insert_breakpoint (struct gdbarch *gdbarch, |
3017 | struct bp_target_info *bp_tgt) | |
c906108c SS |
3018 | { |
3019 | int retval; | |
3020 | ||
a6d9a66e | 3021 | retval = debug_target.to_insert_breakpoint (gdbarch, bp_tgt); |
c906108c | 3022 | |
96baa820 | 3023 | fprintf_unfiltered (gdb_stdlog, |
104c1213 | 3024 | "target_insert_breakpoint (0x%lx, xxx) = %ld\n", |
8181d85f | 3025 | (unsigned long) bp_tgt->placed_address, |
104c1213 | 3026 | (unsigned long) retval); |
c906108c SS |
3027 | return retval; |
3028 | } | |
3029 | ||
3030 | static int | |
a6d9a66e UW |
3031 | debug_to_remove_breakpoint (struct gdbarch *gdbarch, |
3032 | struct bp_target_info *bp_tgt) | |
c906108c SS |
3033 | { |
3034 | int retval; | |
3035 | ||
a6d9a66e | 3036 | retval = debug_target.to_remove_breakpoint (gdbarch, bp_tgt); |
c906108c | 3037 | |
96baa820 | 3038 | fprintf_unfiltered (gdb_stdlog, |
104c1213 | 3039 | "target_remove_breakpoint (0x%lx, xxx) = %ld\n", |
8181d85f | 3040 | (unsigned long) bp_tgt->placed_address, |
104c1213 | 3041 | (unsigned long) retval); |
c906108c SS |
3042 | return retval; |
3043 | } | |
3044 | ||
ccaa32c7 GS |
3045 | static int |
3046 | debug_to_can_use_hw_breakpoint (int type, int cnt, int from_tty) | |
3047 | { | |
3048 | int retval; | |
3049 | ||
3050 | retval = debug_target.to_can_use_hw_breakpoint (type, cnt, from_tty); | |
3051 | ||
3052 | fprintf_unfiltered (gdb_stdlog, | |
3053 | "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n", | |
3054 | (unsigned long) type, | |
3055 | (unsigned long) cnt, | |
3056 | (unsigned long) from_tty, | |
3057 | (unsigned long) retval); | |
3058 | return retval; | |
3059 | } | |
3060 | ||
e0d24f8d WZ |
3061 | static int |
3062 | debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
3063 | { | |
3064 | CORE_ADDR retval; | |
3065 | ||
3066 | retval = debug_target.to_region_ok_for_hw_watchpoint (addr, len); | |
3067 | ||
3068 | fprintf_unfiltered (gdb_stdlog, | |
d92524f1 | 3069 | "target_region_ok_for_hw_watchpoint (%ld, %ld) = 0x%lx\n", |
e0d24f8d WZ |
3070 | (unsigned long) addr, |
3071 | (unsigned long) len, | |
3072 | (unsigned long) retval); | |
3073 | return retval; | |
3074 | } | |
3075 | ||
ccaa32c7 GS |
3076 | static int |
3077 | debug_to_stopped_by_watchpoint (void) | |
3078 | { | |
3079 | int retval; | |
3080 | ||
3081 | retval = debug_target.to_stopped_by_watchpoint (); | |
3082 | ||
3083 | fprintf_unfiltered (gdb_stdlog, | |
d92524f1 | 3084 | "target_stopped_by_watchpoint () = %ld\n", |
ccaa32c7 GS |
3085 | (unsigned long) retval); |
3086 | return retval; | |
3087 | } | |
3088 | ||
4aa7a7f5 JJ |
3089 | static int |
3090 | debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr) | |
ccaa32c7 | 3091 | { |
4aa7a7f5 | 3092 | int retval; |
ccaa32c7 | 3093 | |
4aa7a7f5 | 3094 | retval = debug_target.to_stopped_data_address (target, addr); |
ccaa32c7 GS |
3095 | |
3096 | fprintf_unfiltered (gdb_stdlog, | |
4aa7a7f5 JJ |
3097 | "target_stopped_data_address ([0x%lx]) = %ld\n", |
3098 | (unsigned long)*addr, | |
3099 | (unsigned long)retval); | |
ccaa32c7 GS |
3100 | return retval; |
3101 | } | |
3102 | ||
5009afc5 AS |
3103 | static int |
3104 | debug_to_watchpoint_addr_within_range (struct target_ops *target, | |
3105 | CORE_ADDR addr, | |
3106 | CORE_ADDR start, int length) | |
3107 | { | |
3108 | int retval; | |
3109 | ||
3110 | retval = debug_target.to_watchpoint_addr_within_range (target, addr, | |
3111 | start, length); | |
3112 | ||
3113 | fprintf_filtered (gdb_stdlog, | |
3114 | "target_watchpoint_addr_within_range (0x%lx, 0x%lx, %d) = %d\n", | |
3115 | (unsigned long) addr, (unsigned long) start, length, | |
3116 | retval); | |
3117 | return retval; | |
3118 | } | |
3119 | ||
ccaa32c7 | 3120 | static int |
a6d9a66e UW |
3121 | debug_to_insert_hw_breakpoint (struct gdbarch *gdbarch, |
3122 | struct bp_target_info *bp_tgt) | |
ccaa32c7 GS |
3123 | { |
3124 | int retval; | |
3125 | ||
a6d9a66e | 3126 | retval = debug_target.to_insert_hw_breakpoint (gdbarch, bp_tgt); |
ccaa32c7 GS |
3127 | |
3128 | fprintf_unfiltered (gdb_stdlog, | |
3129 | "target_insert_hw_breakpoint (0x%lx, xxx) = %ld\n", | |
8181d85f | 3130 | (unsigned long) bp_tgt->placed_address, |
ccaa32c7 GS |
3131 | (unsigned long) retval); |
3132 | return retval; | |
3133 | } | |
3134 | ||
3135 | static int | |
a6d9a66e UW |
3136 | debug_to_remove_hw_breakpoint (struct gdbarch *gdbarch, |
3137 | struct bp_target_info *bp_tgt) | |
ccaa32c7 GS |
3138 | { |
3139 | int retval; | |
3140 | ||
a6d9a66e | 3141 | retval = debug_target.to_remove_hw_breakpoint (gdbarch, bp_tgt); |
ccaa32c7 GS |
3142 | |
3143 | fprintf_unfiltered (gdb_stdlog, | |
3144 | "target_remove_hw_breakpoint (0x%lx, xxx) = %ld\n", | |
8181d85f | 3145 | (unsigned long) bp_tgt->placed_address, |
ccaa32c7 GS |
3146 | (unsigned long) retval); |
3147 | return retval; | |
3148 | } | |
3149 | ||
3150 | static int | |
3151 | debug_to_insert_watchpoint (CORE_ADDR addr, int len, int type) | |
3152 | { | |
3153 | int retval; | |
3154 | ||
3155 | retval = debug_target.to_insert_watchpoint (addr, len, type); | |
3156 | ||
3157 | fprintf_unfiltered (gdb_stdlog, | |
3158 | "target_insert_watchpoint (0x%lx, %d, %d) = %ld\n", | |
3159 | (unsigned long) addr, len, type, (unsigned long) retval); | |
3160 | return retval; | |
3161 | } | |
3162 | ||
3163 | static int | |
3164 | debug_to_remove_watchpoint (CORE_ADDR addr, int len, int type) | |
3165 | { | |
3166 | int retval; | |
3167 | ||
ecde4882 | 3168 | retval = debug_target.to_remove_watchpoint (addr, len, type); |
ccaa32c7 GS |
3169 | |
3170 | fprintf_unfiltered (gdb_stdlog, | |
ecde4882 | 3171 | "target_remove_watchpoint (0x%lx, %d, %d) = %ld\n", |
ccaa32c7 GS |
3172 | (unsigned long) addr, len, type, (unsigned long) retval); |
3173 | return retval; | |
3174 | } | |
3175 | ||
c906108c | 3176 | static void |
fba45db2 | 3177 | debug_to_terminal_init (void) |
c906108c SS |
3178 | { |
3179 | debug_target.to_terminal_init (); | |
3180 | ||
96baa820 | 3181 | fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n"); |
c906108c SS |
3182 | } |
3183 | ||
3184 | static void | |
fba45db2 | 3185 | debug_to_terminal_inferior (void) |
c906108c SS |
3186 | { |
3187 | debug_target.to_terminal_inferior (); | |
3188 | ||
96baa820 | 3189 | fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n"); |
c906108c SS |
3190 | } |
3191 | ||
3192 | static void | |
fba45db2 | 3193 | debug_to_terminal_ours_for_output (void) |
c906108c SS |
3194 | { |
3195 | debug_target.to_terminal_ours_for_output (); | |
3196 | ||
96baa820 | 3197 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n"); |
c906108c SS |
3198 | } |
3199 | ||
3200 | static void | |
fba45db2 | 3201 | debug_to_terminal_ours (void) |
c906108c SS |
3202 | { |
3203 | debug_target.to_terminal_ours (); | |
3204 | ||
96baa820 | 3205 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n"); |
c906108c SS |
3206 | } |
3207 | ||
a790ad35 SC |
3208 | static void |
3209 | debug_to_terminal_save_ours (void) | |
3210 | { | |
3211 | debug_target.to_terminal_save_ours (); | |
3212 | ||
3213 | fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n"); | |
3214 | } | |
3215 | ||
c906108c | 3216 | static void |
fba45db2 | 3217 | debug_to_terminal_info (char *arg, int from_tty) |
c906108c SS |
3218 | { |
3219 | debug_target.to_terminal_info (arg, from_tty); | |
3220 | ||
96baa820 | 3221 | fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg, |
c906108c SS |
3222 | from_tty); |
3223 | } | |
3224 | ||
c906108c | 3225 | static void |
fba45db2 | 3226 | debug_to_load (char *args, int from_tty) |
c906108c SS |
3227 | { |
3228 | debug_target.to_load (args, from_tty); | |
3229 | ||
96baa820 | 3230 | fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty); |
c906108c SS |
3231 | } |
3232 | ||
3233 | static int | |
fba45db2 | 3234 | debug_to_lookup_symbol (char *name, CORE_ADDR *addrp) |
c906108c SS |
3235 | { |
3236 | int retval; | |
3237 | ||
3238 | retval = debug_target.to_lookup_symbol (name, addrp); | |
3239 | ||
96baa820 | 3240 | fprintf_unfiltered (gdb_stdlog, "target_lookup_symbol (%s, xxx)\n", name); |
c906108c SS |
3241 | |
3242 | return retval; | |
3243 | } | |
3244 | ||
c906108c | 3245 | static void |
39f77062 | 3246 | debug_to_post_startup_inferior (ptid_t ptid) |
c906108c | 3247 | { |
39f77062 | 3248 | debug_target.to_post_startup_inferior (ptid); |
c906108c | 3249 | |
96baa820 | 3250 | fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n", |
39f77062 | 3251 | PIDGET (ptid)); |
c906108c SS |
3252 | } |
3253 | ||
3254 | static void | |
fba45db2 | 3255 | debug_to_acknowledge_created_inferior (int pid) |
c906108c SS |
3256 | { |
3257 | debug_target.to_acknowledge_created_inferior (pid); | |
3258 | ||
96baa820 | 3259 | fprintf_unfiltered (gdb_stdlog, "target_acknowledge_created_inferior (%d)\n", |
c906108c SS |
3260 | pid); |
3261 | } | |
3262 | ||
fa113d1a | 3263 | static void |
fba45db2 | 3264 | debug_to_insert_fork_catchpoint (int pid) |
c906108c | 3265 | { |
fa113d1a | 3266 | debug_target.to_insert_fork_catchpoint (pid); |
c906108c | 3267 | |
fa113d1a AC |
3268 | fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d)\n", |
3269 | pid); | |
c906108c SS |
3270 | } |
3271 | ||
3272 | static int | |
fba45db2 | 3273 | debug_to_remove_fork_catchpoint (int pid) |
c906108c | 3274 | { |
c5aa993b | 3275 | int retval; |
c906108c SS |
3276 | |
3277 | retval = debug_target.to_remove_fork_catchpoint (pid); | |
3278 | ||
96baa820 | 3279 | fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n", |
c5aa993b | 3280 | pid, retval); |
c906108c SS |
3281 | |
3282 | return retval; | |
3283 | } | |
3284 | ||
fa113d1a | 3285 | static void |
fba45db2 | 3286 | debug_to_insert_vfork_catchpoint (int pid) |
c906108c | 3287 | { |
fa113d1a | 3288 | debug_target.to_insert_vfork_catchpoint (pid); |
c906108c | 3289 | |
fa113d1a AC |
3290 | fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d)\n", |
3291 | pid); | |
c906108c SS |
3292 | } |
3293 | ||
3294 | static int | |
fba45db2 | 3295 | debug_to_remove_vfork_catchpoint (int pid) |
c906108c | 3296 | { |
c5aa993b | 3297 | int retval; |
c906108c SS |
3298 | |
3299 | retval = debug_target.to_remove_vfork_catchpoint (pid); | |
3300 | ||
96baa820 | 3301 | fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n", |
c5aa993b | 3302 | pid, retval); |
c906108c SS |
3303 | |
3304 | return retval; | |
3305 | } | |
3306 | ||
fa113d1a | 3307 | static void |
fba45db2 | 3308 | debug_to_insert_exec_catchpoint (int pid) |
c906108c | 3309 | { |
fa113d1a | 3310 | debug_target.to_insert_exec_catchpoint (pid); |
c906108c | 3311 | |
fa113d1a AC |
3312 | fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d)\n", |
3313 | pid); | |
c906108c SS |
3314 | } |
3315 | ||
3316 | static int | |
fba45db2 | 3317 | debug_to_remove_exec_catchpoint (int pid) |
c906108c | 3318 | { |
c5aa993b | 3319 | int retval; |
c906108c SS |
3320 | |
3321 | retval = debug_target.to_remove_exec_catchpoint (pid); | |
3322 | ||
96baa820 | 3323 | fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n", |
c5aa993b | 3324 | pid, retval); |
c906108c SS |
3325 | |
3326 | return retval; | |
3327 | } | |
3328 | ||
c906108c | 3329 | static int |
fba45db2 | 3330 | debug_to_has_exited (int pid, int wait_status, int *exit_status) |
c906108c | 3331 | { |
c5aa993b | 3332 | int has_exited; |
c906108c SS |
3333 | |
3334 | has_exited = debug_target.to_has_exited (pid, wait_status, exit_status); | |
3335 | ||
96baa820 | 3336 | fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n", |
c5aa993b | 3337 | pid, wait_status, *exit_status, has_exited); |
c906108c SS |
3338 | |
3339 | return has_exited; | |
3340 | } | |
3341 | ||
c906108c | 3342 | static int |
fba45db2 | 3343 | debug_to_can_run (void) |
c906108c SS |
3344 | { |
3345 | int retval; | |
3346 | ||
3347 | retval = debug_target.to_can_run (); | |
3348 | ||
96baa820 | 3349 | fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval); |
c906108c SS |
3350 | |
3351 | return retval; | |
3352 | } | |
3353 | ||
3354 | static void | |
39f77062 | 3355 | debug_to_notice_signals (ptid_t ptid) |
c906108c | 3356 | { |
39f77062 | 3357 | debug_target.to_notice_signals (ptid); |
c906108c | 3358 | |
39f77062 KB |
3359 | fprintf_unfiltered (gdb_stdlog, "target_notice_signals (%d)\n", |
3360 | PIDGET (ptid)); | |
c906108c SS |
3361 | } |
3362 | ||
c2250ad1 UW |
3363 | static struct gdbarch * |
3364 | debug_to_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
3365 | { | |
3366 | struct gdbarch *retval; | |
3367 | ||
3368 | retval = debug_target.to_thread_architecture (ops, ptid); | |
3369 | ||
3370 | fprintf_unfiltered (gdb_stdlog, "target_thread_architecture (%s) = %p [%s]\n", | |
3371 | target_pid_to_str (ptid), retval, | |
3372 | gdbarch_bfd_arch_info (retval)->printable_name); | |
3373 | return retval; | |
3374 | } | |
3375 | ||
c906108c | 3376 | static void |
94cc34af | 3377 | debug_to_stop (ptid_t ptid) |
c906108c | 3378 | { |
94cc34af | 3379 | debug_target.to_stop (ptid); |
c906108c | 3380 | |
94cc34af PA |
3381 | fprintf_unfiltered (gdb_stdlog, "target_stop (%s)\n", |
3382 | target_pid_to_str (ptid)); | |
c906108c SS |
3383 | } |
3384 | ||
96baa820 JM |
3385 | static void |
3386 | debug_to_rcmd (char *command, | |
d9fcf2fb | 3387 | struct ui_file *outbuf) |
96baa820 JM |
3388 | { |
3389 | debug_target.to_rcmd (command, outbuf); | |
3390 | fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command); | |
3391 | } | |
3392 | ||
c906108c | 3393 | static char * |
fba45db2 | 3394 | debug_to_pid_to_exec_file (int pid) |
c906108c | 3395 | { |
c5aa993b | 3396 | char *exec_file; |
c906108c SS |
3397 | |
3398 | exec_file = debug_target.to_pid_to_exec_file (pid); | |
3399 | ||
96baa820 | 3400 | fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n", |
c5aa993b | 3401 | pid, exec_file); |
c906108c SS |
3402 | |
3403 | return exec_file; | |
3404 | } | |
3405 | ||
c906108c | 3406 | static void |
fba45db2 | 3407 | setup_target_debug (void) |
c906108c SS |
3408 | { |
3409 | memcpy (&debug_target, ¤t_target, sizeof debug_target); | |
3410 | ||
3411 | current_target.to_open = debug_to_open; | |
c906108c | 3412 | current_target.to_post_attach = debug_to_post_attach; |
c906108c | 3413 | current_target.to_prepare_to_store = debug_to_prepare_to_store; |
c8e73a31 | 3414 | current_target.deprecated_xfer_memory = deprecated_debug_xfer_memory; |
c906108c SS |
3415 | current_target.to_files_info = debug_to_files_info; |
3416 | current_target.to_insert_breakpoint = debug_to_insert_breakpoint; | |
3417 | current_target.to_remove_breakpoint = debug_to_remove_breakpoint; | |
ccaa32c7 GS |
3418 | current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint; |
3419 | current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint; | |
3420 | current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint; | |
3421 | current_target.to_insert_watchpoint = debug_to_insert_watchpoint; | |
3422 | current_target.to_remove_watchpoint = debug_to_remove_watchpoint; | |
3423 | current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint; | |
3424 | current_target.to_stopped_data_address = debug_to_stopped_data_address; | |
5009afc5 | 3425 | current_target.to_watchpoint_addr_within_range = debug_to_watchpoint_addr_within_range; |
e0d24f8d | 3426 | current_target.to_region_ok_for_hw_watchpoint = debug_to_region_ok_for_hw_watchpoint; |
c906108c SS |
3427 | current_target.to_terminal_init = debug_to_terminal_init; |
3428 | current_target.to_terminal_inferior = debug_to_terminal_inferior; | |
3429 | current_target.to_terminal_ours_for_output = debug_to_terminal_ours_for_output; | |
3430 | current_target.to_terminal_ours = debug_to_terminal_ours; | |
a790ad35 | 3431 | current_target.to_terminal_save_ours = debug_to_terminal_save_ours; |
c906108c | 3432 | current_target.to_terminal_info = debug_to_terminal_info; |
c906108c SS |
3433 | current_target.to_load = debug_to_load; |
3434 | current_target.to_lookup_symbol = debug_to_lookup_symbol; | |
c906108c SS |
3435 | current_target.to_post_startup_inferior = debug_to_post_startup_inferior; |
3436 | current_target.to_acknowledge_created_inferior = debug_to_acknowledge_created_inferior; | |
c906108c SS |
3437 | current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint; |
3438 | current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint; | |
3439 | current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint; | |
3440 | current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint; | |
c906108c SS |
3441 | current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint; |
3442 | current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint; | |
c906108c | 3443 | current_target.to_has_exited = debug_to_has_exited; |
c906108c SS |
3444 | current_target.to_can_run = debug_to_can_run; |
3445 | current_target.to_notice_signals = debug_to_notice_signals; | |
c906108c | 3446 | current_target.to_stop = debug_to_stop; |
96baa820 | 3447 | current_target.to_rcmd = debug_to_rcmd; |
c906108c | 3448 | current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file; |
c2250ad1 | 3449 | current_target.to_thread_architecture = debug_to_thread_architecture; |
c906108c | 3450 | } |
c906108c | 3451 | \f |
c5aa993b JM |
3452 | |
3453 | static char targ_desc[] = | |
3454 | "Names of targets and files being debugged.\n\ | |
c906108c SS |
3455 | Shows the entire stack of targets currently in use (including the exec-file,\n\ |
3456 | core-file, and process, if any), as well as the symbol file name."; | |
3457 | ||
96baa820 JM |
3458 | static void |
3459 | do_monitor_command (char *cmd, | |
3460 | int from_tty) | |
3461 | { | |
2b5fe715 AC |
3462 | if ((current_target.to_rcmd |
3463 | == (void (*) (char *, struct ui_file *)) tcomplain) | |
96baa820 | 3464 | || (current_target.to_rcmd == debug_to_rcmd |
2b5fe715 AC |
3465 | && (debug_target.to_rcmd |
3466 | == (void (*) (char *, struct ui_file *)) tcomplain))) | |
8a3fe4f8 | 3467 | error (_("\"monitor\" command not supported by this target.")); |
96baa820 JM |
3468 | target_rcmd (cmd, gdb_stdtarg); |
3469 | } | |
3470 | ||
87680a14 JB |
3471 | /* Print the name of each layers of our target stack. */ |
3472 | ||
3473 | static void | |
3474 | maintenance_print_target_stack (char *cmd, int from_tty) | |
3475 | { | |
3476 | struct target_ops *t; | |
3477 | ||
3478 | printf_filtered (_("The current target stack is:\n")); | |
3479 | ||
3480 | for (t = target_stack; t != NULL; t = t->beneath) | |
3481 | { | |
3482 | printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname); | |
3483 | } | |
3484 | } | |
3485 | ||
c6ebd6cf VP |
3486 | /* Controls if async mode is permitted. */ |
3487 | int target_async_permitted = 0; | |
3488 | ||
3489 | /* The set command writes to this variable. If the inferior is | |
3490 | executing, linux_nat_async_permitted is *not* updated. */ | |
3491 | static int target_async_permitted_1 = 0; | |
3492 | ||
3493 | static void | |
3494 | set_maintenance_target_async_permitted (char *args, int from_tty, | |
3495 | struct cmd_list_element *c) | |
3496 | { | |
c35b1492 | 3497 | if (have_live_inferiors ()) |
c6ebd6cf VP |
3498 | { |
3499 | target_async_permitted_1 = target_async_permitted; | |
3500 | error (_("Cannot change this setting while the inferior is running.")); | |
3501 | } | |
3502 | ||
3503 | target_async_permitted = target_async_permitted_1; | |
3504 | } | |
3505 | ||
3506 | static void | |
3507 | show_maintenance_target_async_permitted (struct ui_file *file, int from_tty, | |
3508 | struct cmd_list_element *c, | |
3509 | const char *value) | |
3510 | { | |
3511 | fprintf_filtered (file, _("\ | |
3512 | Controlling the inferior in asynchronous mode is %s.\n"), value); | |
3513 | } | |
3514 | ||
c906108c | 3515 | void |
fba45db2 | 3516 | initialize_targets (void) |
c906108c SS |
3517 | { |
3518 | init_dummy_target (); | |
3519 | push_target (&dummy_target); | |
3520 | ||
3521 | add_info ("target", target_info, targ_desc); | |
3522 | add_info ("files", target_info, targ_desc); | |
3523 | ||
85c07804 AC |
3524 | add_setshow_zinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
3525 | Set target debugging."), _("\ | |
3526 | Show target debugging."), _("\ | |
333dabeb DJ |
3527 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
3528 | verbose. Changes do not take effect until the next \"run\" or \"target\"\n\ | |
85c07804 AC |
3529 | command."), |
3530 | NULL, | |
920d2a44 | 3531 | show_targetdebug, |
85c07804 | 3532 | &setdebuglist, &showdebuglist); |
3a11626d | 3533 | |
2bc416ba | 3534 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
3535 | &trust_readonly, _("\ |
3536 | Set mode for reading from readonly sections."), _("\ | |
3537 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
3538 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
3539 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 3540 | result in significant performance improvement for remote targets."), |
2c5b56ce | 3541 | NULL, |
920d2a44 | 3542 | show_trust_readonly, |
e707bbc2 | 3543 | &setlist, &showlist); |
96baa820 JM |
3544 | |
3545 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 3546 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 3547 | |
87680a14 JB |
3548 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
3549 | _("Print the name of each layer of the internal target stack."), | |
3550 | &maintenanceprintlist); | |
3551 | ||
c6ebd6cf VP |
3552 | add_setshow_boolean_cmd ("target-async", no_class, |
3553 | &target_async_permitted_1, _("\ | |
3554 | Set whether gdb controls the inferior in asynchronous mode."), _("\ | |
3555 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
3556 | Tells gdb whether to control the inferior in asynchronous mode."), | |
3557 | set_maintenance_target_async_permitted, | |
3558 | show_maintenance_target_async_permitted, | |
3559 | &setlist, | |
3560 | &showlist); | |
3561 | ||
4e5d721f | 3562 | add_setshow_boolean_cmd ("stack-cache", class_support, |
9cf1b572 | 3563 | &stack_cache_enabled_p_1, _("\ |
4e5d721f DE |
3564 | Set cache use for stack access."), _("\ |
3565 | Show cache use for stack access."), _("\ | |
3566 | When on, use the data cache for all stack access, regardless of any\n\ | |
3567 | configured memory regions. This improves remote performance significantly.\n\ | |
3568 | By default, caching for stack access is on."), | |
3569 | set_stack_cache_enabled_p, | |
3570 | show_stack_cache_enabled_p, | |
3571 | &setlist, &showlist); | |
3572 | ||
8add0441 | 3573 | target_dcache = dcache_init (); |
c906108c | 3574 | } |