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c906108c | 1 | /* Select target systems and architectures at runtime for GDB. |
7998dfc3 | 2 | |
6aba47ca | 3 | Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
7b6bb8da | 4 | 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
f6519ebc | 5 | Free Software Foundation, Inc. |
7998dfc3 | 6 | |
c906108c SS |
7 | Contributed by Cygnus Support. |
8 | ||
c5aa993b | 9 | This file is part of GDB. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is free software; you can redistribute it and/or modify |
12 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 13 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 14 | (at your option) any later version. |
c906108c | 15 | |
c5aa993b JM |
16 | This program is distributed in the hope that it will be useful, |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
c906108c | 20 | |
c5aa993b | 21 | You should have received a copy of the GNU General Public License |
a9762ec7 | 22 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
23 | |
24 | #include "defs.h" | |
25 | #include <errno.h> | |
c906108c SS |
26 | #include "gdb_string.h" |
27 | #include "target.h" | |
28 | #include "gdbcmd.h" | |
29 | #include "symtab.h" | |
30 | #include "inferior.h" | |
31 | #include "bfd.h" | |
32 | #include "symfile.h" | |
33 | #include "objfiles.h" | |
03f2053f | 34 | #include "gdb_wait.h" |
4930751a | 35 | #include "dcache.h" |
c906108c | 36 | #include <signal.h> |
4e052eda | 37 | #include "regcache.h" |
0088c768 | 38 | #include "gdb_assert.h" |
b6591e8b | 39 | #include "gdbcore.h" |
9e35dae4 | 40 | #include "exceptions.h" |
424163ea | 41 | #include "target-descriptions.h" |
e1ac3328 | 42 | #include "gdbthread.h" |
b9db4ced | 43 | #include "solib.h" |
07b82ea5 | 44 | #include "exec.h" |
edb3359d | 45 | #include "inline-frame.h" |
2f4d8875 | 46 | #include "tracepoint.h" |
c906108c | 47 | |
a14ed312 | 48 | static void target_info (char *, int); |
c906108c | 49 | |
a14ed312 | 50 | static void default_terminal_info (char *, int); |
c906108c | 51 | |
5009afc5 AS |
52 | static int default_watchpoint_addr_within_range (struct target_ops *, |
53 | CORE_ADDR, CORE_ADDR, int); | |
54 | ||
e0d24f8d WZ |
55 | static int default_region_ok_for_hw_watchpoint (CORE_ADDR, int); |
56 | ||
c25c4a8b | 57 | static void tcomplain (void) ATTRIBUTE_NORETURN; |
c906108c | 58 | |
a14ed312 | 59 | static int nomemory (CORE_ADDR, char *, int, int, struct target_ops *); |
c906108c | 60 | |
a14ed312 | 61 | static int return_zero (void); |
c906108c | 62 | |
a14ed312 | 63 | static int return_one (void); |
c906108c | 64 | |
ccaa32c7 GS |
65 | static int return_minus_one (void); |
66 | ||
a14ed312 | 67 | void target_ignore (void); |
c906108c | 68 | |
a14ed312 | 69 | static void target_command (char *, int); |
c906108c | 70 | |
a14ed312 | 71 | static struct target_ops *find_default_run_target (char *); |
c906108c | 72 | |
4b8a223f | 73 | static LONGEST default_xfer_partial (struct target_ops *ops, |
0088c768 | 74 | enum target_object object, |
1b0ba102 AC |
75 | const char *annex, gdb_byte *readbuf, |
76 | const gdb_byte *writebuf, | |
8aa91c1e | 77 | ULONGEST offset, LONGEST len); |
0088c768 | 78 | |
cf7a04e8 DJ |
79 | static LONGEST current_xfer_partial (struct target_ops *ops, |
80 | enum target_object object, | |
81 | const char *annex, gdb_byte *readbuf, | |
82 | const gdb_byte *writebuf, | |
83 | ULONGEST offset, LONGEST len); | |
c906108c | 84 | |
cf7a04e8 DJ |
85 | static LONGEST target_xfer_partial (struct target_ops *ops, |
86 | enum target_object object, | |
87 | const char *annex, | |
88 | void *readbuf, const void *writebuf, | |
89 | ULONGEST offset, LONGEST len); | |
c906108c | 90 | |
c2250ad1 UW |
91 | static struct gdbarch *default_thread_architecture (struct target_ops *ops, |
92 | ptid_t ptid); | |
93 | ||
a14ed312 | 94 | static void init_dummy_target (void); |
c906108c | 95 | |
aa869812 AC |
96 | static struct target_ops debug_target; |
97 | ||
a14ed312 | 98 | static void debug_to_open (char *, int); |
c906108c | 99 | |
316f2060 | 100 | static void debug_to_prepare_to_store (struct regcache *); |
c906108c | 101 | |
a14ed312 | 102 | static void debug_to_files_info (struct target_ops *); |
c906108c | 103 | |
a6d9a66e UW |
104 | static int debug_to_insert_breakpoint (struct gdbarch *, |
105 | struct bp_target_info *); | |
c906108c | 106 | |
a6d9a66e UW |
107 | static int debug_to_remove_breakpoint (struct gdbarch *, |
108 | struct bp_target_info *); | |
c906108c | 109 | |
ccaa32c7 GS |
110 | static int debug_to_can_use_hw_breakpoint (int, int, int); |
111 | ||
a6d9a66e UW |
112 | static int debug_to_insert_hw_breakpoint (struct gdbarch *, |
113 | struct bp_target_info *); | |
ccaa32c7 | 114 | |
a6d9a66e UW |
115 | static int debug_to_remove_hw_breakpoint (struct gdbarch *, |
116 | struct bp_target_info *); | |
ccaa32c7 | 117 | |
0cf6dd15 TJB |
118 | static int debug_to_insert_watchpoint (CORE_ADDR, int, int, |
119 | struct expression *); | |
ccaa32c7 | 120 | |
0cf6dd15 TJB |
121 | static int debug_to_remove_watchpoint (CORE_ADDR, int, int, |
122 | struct expression *); | |
ccaa32c7 GS |
123 | |
124 | static int debug_to_stopped_by_watchpoint (void); | |
125 | ||
4aa7a7f5 | 126 | static int debug_to_stopped_data_address (struct target_ops *, CORE_ADDR *); |
ccaa32c7 | 127 | |
5009afc5 AS |
128 | static int debug_to_watchpoint_addr_within_range (struct target_ops *, |
129 | CORE_ADDR, CORE_ADDR, int); | |
130 | ||
e0d24f8d WZ |
131 | static int debug_to_region_ok_for_hw_watchpoint (CORE_ADDR, int); |
132 | ||
0cf6dd15 TJB |
133 | static int debug_to_can_accel_watchpoint_condition (CORE_ADDR, int, int, |
134 | struct expression *); | |
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_can_run (void); |
c906108c | 151 | |
94cc34af | 152 | static void debug_to_stop (ptid_t); |
c906108c | 153 | |
c906108c | 154 | /* Pointer to array of target architecture structures; the size of the |
2bc416ba | 155 | array; the current index into the array; the allocated size of the |
c906108c SS |
156 | array. */ |
157 | struct target_ops **target_structs; | |
158 | unsigned target_struct_size; | |
159 | unsigned target_struct_index; | |
160 | unsigned target_struct_allocsize; | |
161 | #define DEFAULT_ALLOCSIZE 10 | |
162 | ||
163 | /* The initial current target, so that there is always a semi-valid | |
164 | current target. */ | |
165 | ||
166 | static struct target_ops dummy_target; | |
167 | ||
168 | /* Top of target stack. */ | |
169 | ||
258b763a | 170 | static struct target_ops *target_stack; |
c906108c SS |
171 | |
172 | /* The target structure we are currently using to talk to a process | |
173 | or file or whatever "inferior" we have. */ | |
174 | ||
175 | struct target_ops current_target; | |
176 | ||
177 | /* Command list for target. */ | |
178 | ||
179 | static struct cmd_list_element *targetlist = NULL; | |
180 | ||
cf7a04e8 DJ |
181 | /* Nonzero if we should trust readonly sections from the |
182 | executable when reading memory. */ | |
183 | ||
184 | static int trust_readonly = 0; | |
185 | ||
8defab1a DJ |
186 | /* Nonzero if we should show true memory content including |
187 | memory breakpoint inserted by gdb. */ | |
188 | ||
189 | static int show_memory_breakpoints = 0; | |
190 | ||
d914c394 SS |
191 | /* These globals control whether GDB attempts to perform these |
192 | operations; they are useful for targets that need to prevent | |
193 | inadvertant disruption, such as in non-stop mode. */ | |
194 | ||
195 | int may_write_registers = 1; | |
196 | ||
197 | int may_write_memory = 1; | |
198 | ||
199 | int may_insert_breakpoints = 1; | |
200 | ||
201 | int may_insert_tracepoints = 1; | |
202 | ||
203 | int may_insert_fast_tracepoints = 1; | |
204 | ||
205 | int may_stop = 1; | |
206 | ||
c906108c SS |
207 | /* Non-zero if we want to see trace of target level stuff. */ |
208 | ||
209 | static int targetdebug = 0; | |
920d2a44 AC |
210 | static void |
211 | show_targetdebug (struct ui_file *file, int from_tty, | |
212 | struct cmd_list_element *c, const char *value) | |
213 | { | |
214 | fprintf_filtered (file, _("Target debugging is %s.\n"), value); | |
215 | } | |
c906108c | 216 | |
a14ed312 | 217 | static void setup_target_debug (void); |
c906108c | 218 | |
4e5d721f DE |
219 | /* The option sets this. */ |
220 | static int stack_cache_enabled_p_1 = 1; | |
221 | /* And set_stack_cache_enabled_p updates this. | |
222 | The reason for the separation is so that we don't flush the cache for | |
223 | on->on transitions. */ | |
224 | static int stack_cache_enabled_p = 1; | |
225 | ||
226 | /* This is called *after* the stack-cache has been set. | |
227 | Flush the cache for off->on and on->off transitions. | |
228 | There's no real need to flush the cache for on->off transitions, | |
229 | except cleanliness. */ | |
230 | ||
231 | static void | |
232 | set_stack_cache_enabled_p (char *args, int from_tty, | |
233 | struct cmd_list_element *c) | |
234 | { | |
235 | if (stack_cache_enabled_p != stack_cache_enabled_p_1) | |
236 | target_dcache_invalidate (); | |
237 | ||
238 | stack_cache_enabled_p = stack_cache_enabled_p_1; | |
239 | } | |
240 | ||
241 | static void | |
242 | show_stack_cache_enabled_p (struct ui_file *file, int from_tty, | |
243 | struct cmd_list_element *c, const char *value) | |
244 | { | |
245 | fprintf_filtered (file, _("Cache use for stack accesses is %s.\n"), value); | |
246 | } | |
247 | ||
248 | /* Cache of memory operations, to speed up remote access. */ | |
249 | static DCACHE *target_dcache; | |
250 | ||
251 | /* Invalidate the target dcache. */ | |
252 | ||
253 | void | |
254 | target_dcache_invalidate (void) | |
255 | { | |
256 | dcache_invalidate (target_dcache); | |
257 | } | |
4930751a | 258 | |
c906108c SS |
259 | /* The user just typed 'target' without the name of a target. */ |
260 | ||
c906108c | 261 | static void |
fba45db2 | 262 | target_command (char *arg, int from_tty) |
c906108c SS |
263 | { |
264 | fputs_filtered ("Argument required (target name). Try `help target'\n", | |
265 | gdb_stdout); | |
266 | } | |
267 | ||
c35b1492 PA |
268 | /* Default target_has_* methods for process_stratum targets. */ |
269 | ||
270 | int | |
271 | default_child_has_all_memory (struct target_ops *ops) | |
272 | { | |
273 | /* If no inferior selected, then we can't read memory here. */ | |
274 | if (ptid_equal (inferior_ptid, null_ptid)) | |
275 | return 0; | |
276 | ||
277 | return 1; | |
278 | } | |
279 | ||
280 | int | |
281 | default_child_has_memory (struct target_ops *ops) | |
282 | { | |
283 | /* If no inferior selected, then we can't read memory here. */ | |
284 | if (ptid_equal (inferior_ptid, null_ptid)) | |
285 | return 0; | |
286 | ||
287 | return 1; | |
288 | } | |
289 | ||
290 | int | |
291 | default_child_has_stack (struct target_ops *ops) | |
292 | { | |
293 | /* If no inferior selected, there's no stack. */ | |
294 | if (ptid_equal (inferior_ptid, null_ptid)) | |
295 | return 0; | |
296 | ||
297 | return 1; | |
298 | } | |
299 | ||
300 | int | |
301 | default_child_has_registers (struct target_ops *ops) | |
302 | { | |
303 | /* Can't read registers from no inferior. */ | |
304 | if (ptid_equal (inferior_ptid, null_ptid)) | |
305 | return 0; | |
306 | ||
307 | return 1; | |
308 | } | |
309 | ||
310 | int | |
aeaec162 | 311 | default_child_has_execution (struct target_ops *ops, ptid_t the_ptid) |
c35b1492 PA |
312 | { |
313 | /* If there's no thread selected, then we can't make it run through | |
314 | hoops. */ | |
aeaec162 | 315 | if (ptid_equal (the_ptid, null_ptid)) |
c35b1492 PA |
316 | return 0; |
317 | ||
318 | return 1; | |
319 | } | |
320 | ||
321 | ||
322 | int | |
323 | target_has_all_memory_1 (void) | |
324 | { | |
325 | struct target_ops *t; | |
326 | ||
327 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
328 | if (t->to_has_all_memory (t)) | |
329 | return 1; | |
330 | ||
331 | return 0; | |
332 | } | |
333 | ||
334 | int | |
335 | target_has_memory_1 (void) | |
336 | { | |
337 | struct target_ops *t; | |
338 | ||
339 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
340 | if (t->to_has_memory (t)) | |
341 | return 1; | |
342 | ||
343 | return 0; | |
344 | } | |
345 | ||
346 | int | |
347 | target_has_stack_1 (void) | |
348 | { | |
349 | struct target_ops *t; | |
350 | ||
351 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
352 | if (t->to_has_stack (t)) | |
353 | return 1; | |
354 | ||
355 | return 0; | |
356 | } | |
357 | ||
358 | int | |
359 | target_has_registers_1 (void) | |
360 | { | |
361 | struct target_ops *t; | |
362 | ||
363 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
364 | if (t->to_has_registers (t)) | |
365 | return 1; | |
366 | ||
367 | return 0; | |
368 | } | |
369 | ||
370 | int | |
aeaec162 | 371 | target_has_execution_1 (ptid_t the_ptid) |
c35b1492 PA |
372 | { |
373 | struct target_ops *t; | |
374 | ||
375 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
aeaec162 | 376 | if (t->to_has_execution (t, the_ptid)) |
c35b1492 PA |
377 | return 1; |
378 | ||
379 | return 0; | |
380 | } | |
381 | ||
aeaec162 TT |
382 | int |
383 | target_has_execution_current (void) | |
384 | { | |
385 | return target_has_execution_1 (inferior_ptid); | |
386 | } | |
387 | ||
c906108c SS |
388 | /* Add a possible target architecture to the list. */ |
389 | ||
390 | void | |
fba45db2 | 391 | add_target (struct target_ops *t) |
c906108c | 392 | { |
0088c768 | 393 | /* Provide default values for all "must have" methods. */ |
0b603eba AC |
394 | if (t->to_xfer_partial == NULL) |
395 | t->to_xfer_partial = default_xfer_partial; | |
0088c768 | 396 | |
c35b1492 PA |
397 | if (t->to_has_all_memory == NULL) |
398 | t->to_has_all_memory = (int (*) (struct target_ops *)) return_zero; | |
399 | ||
400 | if (t->to_has_memory == NULL) | |
401 | t->to_has_memory = (int (*) (struct target_ops *)) return_zero; | |
402 | ||
403 | if (t->to_has_stack == NULL) | |
404 | t->to_has_stack = (int (*) (struct target_ops *)) return_zero; | |
405 | ||
406 | if (t->to_has_registers == NULL) | |
407 | t->to_has_registers = (int (*) (struct target_ops *)) return_zero; | |
408 | ||
409 | if (t->to_has_execution == NULL) | |
aeaec162 | 410 | t->to_has_execution = (int (*) (struct target_ops *, ptid_t)) return_zero; |
c35b1492 | 411 | |
c906108c SS |
412 | if (!target_structs) |
413 | { | |
414 | target_struct_allocsize = DEFAULT_ALLOCSIZE; | |
415 | target_structs = (struct target_ops **) xmalloc | |
416 | (target_struct_allocsize * sizeof (*target_structs)); | |
417 | } | |
418 | if (target_struct_size >= target_struct_allocsize) | |
419 | { | |
420 | target_struct_allocsize *= 2; | |
421 | target_structs = (struct target_ops **) | |
c5aa993b JM |
422 | xrealloc ((char *) target_structs, |
423 | target_struct_allocsize * sizeof (*target_structs)); | |
c906108c SS |
424 | } |
425 | target_structs[target_struct_size++] = t; | |
c906108c SS |
426 | |
427 | if (targetlist == NULL) | |
1bedd215 AC |
428 | add_prefix_cmd ("target", class_run, target_command, _("\ |
429 | Connect to a target machine or process.\n\ | |
c906108c SS |
430 | The first argument is the type or protocol of the target machine.\n\ |
431 | Remaining arguments are interpreted by the target protocol. For more\n\ | |
432 | information on the arguments for a particular protocol, type\n\ | |
1bedd215 | 433 | `help target ' followed by the protocol name."), |
c906108c SS |
434 | &targetlist, "target ", 0, &cmdlist); |
435 | add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc, &targetlist); | |
436 | } | |
437 | ||
438 | /* Stub functions */ | |
439 | ||
440 | void | |
fba45db2 | 441 | target_ignore (void) |
c906108c SS |
442 | { |
443 | } | |
444 | ||
7d85a9c0 JB |
445 | void |
446 | target_kill (void) | |
447 | { | |
448 | struct target_ops *t; | |
449 | ||
450 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
451 | if (t->to_kill != NULL) | |
452 | { | |
453 | if (targetdebug) | |
454 | fprintf_unfiltered (gdb_stdlog, "target_kill ()\n"); | |
455 | ||
456 | t->to_kill (t); | |
457 | return; | |
458 | } | |
459 | ||
460 | noprocess (); | |
461 | } | |
462 | ||
11cf8741 JM |
463 | void |
464 | target_load (char *arg, int from_tty) | |
465 | { | |
4e5d721f | 466 | target_dcache_invalidate (); |
11cf8741 JM |
467 | (*current_target.to_load) (arg, from_tty); |
468 | } | |
469 | ||
947b8855 PA |
470 | void |
471 | target_create_inferior (char *exec_file, char *args, | |
472 | char **env, int from_tty) | |
136d6dae VP |
473 | { |
474 | struct target_ops *t; | |
5d502164 | 475 | |
136d6dae VP |
476 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
477 | { | |
478 | if (t->to_create_inferior != NULL) | |
479 | { | |
480 | t->to_create_inferior (t, exec_file, args, env, from_tty); | |
947b8855 PA |
481 | if (targetdebug) |
482 | fprintf_unfiltered (gdb_stdlog, | |
483 | "target_create_inferior (%s, %s, xxx, %d)\n", | |
484 | exec_file, args, from_tty); | |
136d6dae VP |
485 | return; |
486 | } | |
487 | } | |
488 | ||
489 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 490 | _("could not find a target to create inferior")); |
136d6dae VP |
491 | } |
492 | ||
d9d2d8b6 PA |
493 | void |
494 | target_terminal_inferior (void) | |
495 | { | |
496 | /* A background resume (``run&'') should leave GDB in control of the | |
c378eb4e | 497 | terminal. Use target_can_async_p, not target_is_async_p, since at |
ba7f6c64 VP |
498 | this point the target is not async yet. However, if sync_execution |
499 | is not set, we know it will become async prior to resume. */ | |
500 | if (target_can_async_p () && !sync_execution) | |
d9d2d8b6 PA |
501 | return; |
502 | ||
503 | /* If GDB is resuming the inferior in the foreground, install | |
504 | inferior's terminal modes. */ | |
505 | (*current_target.to_terminal_inferior) (); | |
506 | } | |
136d6dae | 507 | |
c906108c | 508 | static int |
fba45db2 KB |
509 | nomemory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
510 | struct target_ops *t) | |
c906108c | 511 | { |
c378eb4e MS |
512 | errno = EIO; /* Can't read/write this location. */ |
513 | return 0; /* No bytes handled. */ | |
c906108c SS |
514 | } |
515 | ||
516 | static void | |
fba45db2 | 517 | tcomplain (void) |
c906108c | 518 | { |
8a3fe4f8 | 519 | error (_("You can't do that when your target is `%s'"), |
c906108c SS |
520 | current_target.to_shortname); |
521 | } | |
522 | ||
523 | void | |
fba45db2 | 524 | noprocess (void) |
c906108c | 525 | { |
8a3fe4f8 | 526 | error (_("You can't do that without a process to debug.")); |
c906108c SS |
527 | } |
528 | ||
c906108c | 529 | static void |
fba45db2 | 530 | default_terminal_info (char *args, int from_tty) |
c906108c | 531 | { |
a3f17187 | 532 | printf_unfiltered (_("No saved terminal information.\n")); |
c906108c SS |
533 | } |
534 | ||
0ef643c8 JB |
535 | /* A default implementation for the to_get_ada_task_ptid target method. |
536 | ||
537 | This function builds the PTID by using both LWP and TID as part of | |
538 | the PTID lwp and tid elements. The pid used is the pid of the | |
539 | inferior_ptid. */ | |
540 | ||
2c0b251b | 541 | static ptid_t |
0ef643c8 JB |
542 | default_get_ada_task_ptid (long lwp, long tid) |
543 | { | |
544 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid); | |
545 | } | |
546 | ||
32231432 PA |
547 | static enum exec_direction_kind |
548 | default_execution_direction (void) | |
549 | { | |
550 | if (!target_can_execute_reverse) | |
551 | return EXEC_FORWARD; | |
552 | else if (!target_can_async_p ()) | |
553 | return EXEC_FORWARD; | |
554 | else | |
555 | gdb_assert_not_reached ("\ | |
556 | to_execution_direction must be implemented for reverse async"); | |
557 | } | |
558 | ||
7998dfc3 AC |
559 | /* Go through the target stack from top to bottom, copying over zero |
560 | entries in current_target, then filling in still empty entries. In | |
561 | effect, we are doing class inheritance through the pushed target | |
562 | vectors. | |
563 | ||
564 | NOTE: cagney/2003-10-17: The problem with this inheritance, as it | |
565 | is currently implemented, is that it discards any knowledge of | |
566 | which target an inherited method originally belonged to. | |
567 | Consequently, new new target methods should instead explicitly and | |
568 | locally search the target stack for the target that can handle the | |
569 | request. */ | |
c906108c SS |
570 | |
571 | static void | |
7998dfc3 | 572 | update_current_target (void) |
c906108c | 573 | { |
7998dfc3 AC |
574 | struct target_ops *t; |
575 | ||
08d8bcd7 | 576 | /* First, reset current's contents. */ |
7998dfc3 AC |
577 | memset (¤t_target, 0, sizeof (current_target)); |
578 | ||
579 | #define INHERIT(FIELD, TARGET) \ | |
580 | if (!current_target.FIELD) \ | |
581 | current_target.FIELD = (TARGET)->FIELD | |
582 | ||
583 | for (t = target_stack; t; t = t->beneath) | |
584 | { | |
585 | INHERIT (to_shortname, t); | |
586 | INHERIT (to_longname, t); | |
587 | INHERIT (to_doc, t); | |
b52323fa UW |
588 | /* Do not inherit to_open. */ |
589 | /* Do not inherit to_close. */ | |
136d6dae | 590 | /* Do not inherit to_attach. */ |
7998dfc3 | 591 | INHERIT (to_post_attach, t); |
dc177b7a | 592 | INHERIT (to_attach_no_wait, t); |
136d6dae | 593 | /* Do not inherit to_detach. */ |
597320e7 | 594 | /* Do not inherit to_disconnect. */ |
28439f5e | 595 | /* Do not inherit to_resume. */ |
117de6a9 | 596 | /* Do not inherit to_wait. */ |
28439f5e PA |
597 | /* Do not inherit to_fetch_registers. */ |
598 | /* Do not inherit to_store_registers. */ | |
7998dfc3 | 599 | INHERIT (to_prepare_to_store, t); |
c8e73a31 | 600 | INHERIT (deprecated_xfer_memory, t); |
7998dfc3 AC |
601 | INHERIT (to_files_info, t); |
602 | INHERIT (to_insert_breakpoint, t); | |
603 | INHERIT (to_remove_breakpoint, t); | |
604 | INHERIT (to_can_use_hw_breakpoint, t); | |
605 | INHERIT (to_insert_hw_breakpoint, t); | |
606 | INHERIT (to_remove_hw_breakpoint, t); | |
f1310107 | 607 | /* Do not inherit to_ranged_break_num_registers. */ |
7998dfc3 AC |
608 | INHERIT (to_insert_watchpoint, t); |
609 | INHERIT (to_remove_watchpoint, t); | |
9c06b0b4 TJB |
610 | /* Do not inherit to_insert_mask_watchpoint. */ |
611 | /* Do not inherit to_remove_mask_watchpoint. */ | |
7998dfc3 | 612 | INHERIT (to_stopped_data_address, t); |
74174d2e | 613 | INHERIT (to_have_steppable_watchpoint, t); |
7998dfc3 | 614 | INHERIT (to_have_continuable_watchpoint, t); |
5009afc5 AS |
615 | INHERIT (to_stopped_by_watchpoint, t); |
616 | INHERIT (to_watchpoint_addr_within_range, t); | |
e0d24f8d | 617 | INHERIT (to_region_ok_for_hw_watchpoint, t); |
0cf6dd15 | 618 | INHERIT (to_can_accel_watchpoint_condition, t); |
9c06b0b4 | 619 | /* Do not inherit to_masked_watch_num_registers. */ |
7998dfc3 AC |
620 | INHERIT (to_terminal_init, t); |
621 | INHERIT (to_terminal_inferior, t); | |
622 | INHERIT (to_terminal_ours_for_output, t); | |
623 | INHERIT (to_terminal_ours, t); | |
624 | INHERIT (to_terminal_save_ours, t); | |
625 | INHERIT (to_terminal_info, t); | |
7d85a9c0 | 626 | /* Do not inherit to_kill. */ |
7998dfc3 | 627 | INHERIT (to_load, t); |
136d6dae | 628 | /* Do no inherit to_create_inferior. */ |
7998dfc3 | 629 | INHERIT (to_post_startup_inferior, t); |
7998dfc3 AC |
630 | INHERIT (to_insert_fork_catchpoint, t); |
631 | INHERIT (to_remove_fork_catchpoint, t); | |
632 | INHERIT (to_insert_vfork_catchpoint, t); | |
633 | INHERIT (to_remove_vfork_catchpoint, t); | |
ee057212 | 634 | /* Do not inherit to_follow_fork. */ |
7998dfc3 AC |
635 | INHERIT (to_insert_exec_catchpoint, t); |
636 | INHERIT (to_remove_exec_catchpoint, t); | |
a96d9b2e | 637 | INHERIT (to_set_syscall_catchpoint, t); |
7998dfc3 | 638 | INHERIT (to_has_exited, t); |
82892036 | 639 | /* Do not inherit to_mourn_inferior. */ |
7998dfc3 | 640 | INHERIT (to_can_run, t); |
2455069d | 641 | /* Do not inherit to_pass_signals. */ |
28439f5e PA |
642 | /* Do not inherit to_thread_alive. */ |
643 | /* Do not inherit to_find_new_threads. */ | |
117de6a9 | 644 | /* Do not inherit to_pid_to_str. */ |
7998dfc3 | 645 | INHERIT (to_extra_thread_info, t); |
4694da01 | 646 | INHERIT (to_thread_name, t); |
7998dfc3 | 647 | INHERIT (to_stop, t); |
4b8a223f | 648 | /* Do not inherit to_xfer_partial. */ |
7998dfc3 | 649 | INHERIT (to_rcmd, t); |
7998dfc3 | 650 | INHERIT (to_pid_to_exec_file, t); |
49d03eab | 651 | INHERIT (to_log_command, t); |
7998dfc3 | 652 | INHERIT (to_stratum, t); |
c378eb4e MS |
653 | /* Do not inherit to_has_all_memory. */ |
654 | /* Do not inherit to_has_memory. */ | |
655 | /* Do not inherit to_has_stack. */ | |
656 | /* Do not inherit to_has_registers. */ | |
657 | /* Do not inherit to_has_execution. */ | |
7998dfc3 | 658 | INHERIT (to_has_thread_control, t); |
7998dfc3 AC |
659 | INHERIT (to_can_async_p, t); |
660 | INHERIT (to_is_async_p, t); | |
661 | INHERIT (to_async, t); | |
7998dfc3 AC |
662 | INHERIT (to_find_memory_regions, t); |
663 | INHERIT (to_make_corefile_notes, t); | |
6b04bdb7 MS |
664 | INHERIT (to_get_bookmark, t); |
665 | INHERIT (to_goto_bookmark, t); | |
117de6a9 | 666 | /* Do not inherit to_get_thread_local_address. */ |
b2175913 | 667 | INHERIT (to_can_execute_reverse, t); |
32231432 | 668 | INHERIT (to_execution_direction, t); |
c2250ad1 | 669 | INHERIT (to_thread_architecture, t); |
424163ea | 670 | /* Do not inherit to_read_description. */ |
0ef643c8 | 671 | INHERIT (to_get_ada_task_ptid, t); |
08388c79 | 672 | /* Do not inherit to_search_memory. */ |
8a305172 | 673 | INHERIT (to_supports_multi_process, t); |
d248b706 | 674 | INHERIT (to_supports_enable_disable_tracepoint, t); |
3065dfb6 | 675 | INHERIT (to_supports_string_tracing, t); |
35b1e5cc SS |
676 | INHERIT (to_trace_init, t); |
677 | INHERIT (to_download_tracepoint, t); | |
1e4d1764 | 678 | INHERIT (to_can_download_tracepoint, t); |
35b1e5cc | 679 | INHERIT (to_download_trace_state_variable, t); |
d248b706 KY |
680 | INHERIT (to_enable_tracepoint, t); |
681 | INHERIT (to_disable_tracepoint, t); | |
35b1e5cc SS |
682 | INHERIT (to_trace_set_readonly_regions, t); |
683 | INHERIT (to_trace_start, t); | |
684 | INHERIT (to_get_trace_status, t); | |
f196051f | 685 | INHERIT (to_get_tracepoint_status, t); |
35b1e5cc SS |
686 | INHERIT (to_trace_stop, t); |
687 | INHERIT (to_trace_find, t); | |
688 | INHERIT (to_get_trace_state_variable_value, t); | |
00bf0b85 SS |
689 | INHERIT (to_save_trace_data, t); |
690 | INHERIT (to_upload_tracepoints, t); | |
691 | INHERIT (to_upload_trace_state_variables, t); | |
692 | INHERIT (to_get_raw_trace_data, t); | |
405f8e94 | 693 | INHERIT (to_get_min_fast_tracepoint_insn_len, t); |
35b1e5cc | 694 | INHERIT (to_set_disconnected_tracing, t); |
4daf5ac0 | 695 | INHERIT (to_set_circular_trace_buffer, t); |
f196051f | 696 | INHERIT (to_set_trace_notes, t); |
711e434b | 697 | INHERIT (to_get_tib_address, t); |
d914c394 | 698 | INHERIT (to_set_permissions, t); |
0fb4aa4b PA |
699 | INHERIT (to_static_tracepoint_marker_at, t); |
700 | INHERIT (to_static_tracepoint_markers_by_strid, t); | |
b3b9301e | 701 | INHERIT (to_traceframe_info, t); |
7998dfc3 | 702 | INHERIT (to_magic, t); |
fd79ecee | 703 | /* Do not inherit to_memory_map. */ |
a76d924d DJ |
704 | /* Do not inherit to_flash_erase. */ |
705 | /* Do not inherit to_flash_done. */ | |
7998dfc3 AC |
706 | } |
707 | #undef INHERIT | |
708 | ||
709 | /* Clean up a target struct so it no longer has any zero pointers in | |
0088c768 AC |
710 | it. Some entries are defaulted to a method that print an error, |
711 | others are hard-wired to a standard recursive default. */ | |
c906108c SS |
712 | |
713 | #define de_fault(field, value) \ | |
7998dfc3 AC |
714 | if (!current_target.field) \ |
715 | current_target.field = value | |
0d06e24b | 716 | |
2bc416ba DJ |
717 | de_fault (to_open, |
718 | (void (*) (char *, int)) | |
0d06e24b | 719 | tcomplain); |
2bc416ba DJ |
720 | de_fault (to_close, |
721 | (void (*) (int)) | |
0d06e24b | 722 | target_ignore); |
2bc416ba DJ |
723 | de_fault (to_post_attach, |
724 | (void (*) (int)) | |
0d06e24b | 725 | target_ignore); |
2bc416ba | 726 | de_fault (to_prepare_to_store, |
316f2060 | 727 | (void (*) (struct regcache *)) |
0d06e24b | 728 | noprocess); |
2bc416ba | 729 | de_fault (deprecated_xfer_memory, |
3e43a32a MS |
730 | (int (*) (CORE_ADDR, gdb_byte *, int, int, |
731 | struct mem_attrib *, struct target_ops *)) | |
0d06e24b | 732 | nomemory); |
2bc416ba DJ |
733 | de_fault (to_files_info, |
734 | (void (*) (struct target_ops *)) | |
0d06e24b | 735 | target_ignore); |
2bc416ba | 736 | de_fault (to_insert_breakpoint, |
0d06e24b | 737 | memory_insert_breakpoint); |
2bc416ba | 738 | de_fault (to_remove_breakpoint, |
0d06e24b | 739 | memory_remove_breakpoint); |
ccaa32c7 GS |
740 | de_fault (to_can_use_hw_breakpoint, |
741 | (int (*) (int, int, int)) | |
742 | return_zero); | |
743 | de_fault (to_insert_hw_breakpoint, | |
a6d9a66e | 744 | (int (*) (struct gdbarch *, struct bp_target_info *)) |
ccaa32c7 GS |
745 | return_minus_one); |
746 | de_fault (to_remove_hw_breakpoint, | |
a6d9a66e | 747 | (int (*) (struct gdbarch *, struct bp_target_info *)) |
ccaa32c7 GS |
748 | return_minus_one); |
749 | de_fault (to_insert_watchpoint, | |
0cf6dd15 | 750 | (int (*) (CORE_ADDR, int, int, struct expression *)) |
ccaa32c7 GS |
751 | return_minus_one); |
752 | de_fault (to_remove_watchpoint, | |
0cf6dd15 | 753 | (int (*) (CORE_ADDR, int, int, struct expression *)) |
ccaa32c7 GS |
754 | return_minus_one); |
755 | de_fault (to_stopped_by_watchpoint, | |
756 | (int (*) (void)) | |
757 | return_zero); | |
758 | de_fault (to_stopped_data_address, | |
4aa7a7f5 | 759 | (int (*) (struct target_ops *, CORE_ADDR *)) |
ccaa32c7 | 760 | return_zero); |
5009afc5 AS |
761 | de_fault (to_watchpoint_addr_within_range, |
762 | default_watchpoint_addr_within_range); | |
e0d24f8d WZ |
763 | de_fault (to_region_ok_for_hw_watchpoint, |
764 | default_region_ok_for_hw_watchpoint); | |
0cf6dd15 TJB |
765 | de_fault (to_can_accel_watchpoint_condition, |
766 | (int (*) (CORE_ADDR, int, int, struct expression *)) | |
767 | return_zero); | |
2bc416ba DJ |
768 | de_fault (to_terminal_init, |
769 | (void (*) (void)) | |
0d06e24b | 770 | target_ignore); |
2bc416ba DJ |
771 | de_fault (to_terminal_inferior, |
772 | (void (*) (void)) | |
0d06e24b | 773 | target_ignore); |
2bc416ba DJ |
774 | de_fault (to_terminal_ours_for_output, |
775 | (void (*) (void)) | |
0d06e24b | 776 | target_ignore); |
2bc416ba DJ |
777 | de_fault (to_terminal_ours, |
778 | (void (*) (void)) | |
0d06e24b | 779 | target_ignore); |
2bc416ba DJ |
780 | de_fault (to_terminal_save_ours, |
781 | (void (*) (void)) | |
a790ad35 | 782 | target_ignore); |
2bc416ba | 783 | de_fault (to_terminal_info, |
0d06e24b | 784 | default_terminal_info); |
2bc416ba DJ |
785 | de_fault (to_load, |
786 | (void (*) (char *, int)) | |
0d06e24b | 787 | tcomplain); |
2bc416ba DJ |
788 | de_fault (to_post_startup_inferior, |
789 | (void (*) (ptid_t)) | |
0d06e24b | 790 | target_ignore); |
2bc416ba | 791 | de_fault (to_insert_fork_catchpoint, |
77b06cd7 TJB |
792 | (int (*) (int)) |
793 | return_one); | |
2bc416ba DJ |
794 | de_fault (to_remove_fork_catchpoint, |
795 | (int (*) (int)) | |
77b06cd7 | 796 | return_one); |
2bc416ba | 797 | de_fault (to_insert_vfork_catchpoint, |
77b06cd7 TJB |
798 | (int (*) (int)) |
799 | return_one); | |
2bc416ba DJ |
800 | de_fault (to_remove_vfork_catchpoint, |
801 | (int (*) (int)) | |
77b06cd7 | 802 | return_one); |
2bc416ba | 803 | de_fault (to_insert_exec_catchpoint, |
77b06cd7 TJB |
804 | (int (*) (int)) |
805 | return_one); | |
2bc416ba DJ |
806 | de_fault (to_remove_exec_catchpoint, |
807 | (int (*) (int)) | |
77b06cd7 | 808 | return_one); |
a96d9b2e SDJ |
809 | de_fault (to_set_syscall_catchpoint, |
810 | (int (*) (int, int, int, int, int *)) | |
77b06cd7 | 811 | return_one); |
2bc416ba DJ |
812 | de_fault (to_has_exited, |
813 | (int (*) (int, int, int *)) | |
0d06e24b | 814 | return_zero); |
2bc416ba | 815 | de_fault (to_can_run, |
0d06e24b | 816 | return_zero); |
2bc416ba DJ |
817 | de_fault (to_extra_thread_info, |
818 | (char *(*) (struct thread_info *)) | |
0d06e24b | 819 | return_zero); |
4694da01 TT |
820 | de_fault (to_thread_name, |
821 | (char *(*) (struct thread_info *)) | |
822 | return_zero); | |
2bc416ba | 823 | de_fault (to_stop, |
94cc34af | 824 | (void (*) (ptid_t)) |
0d06e24b | 825 | target_ignore); |
cf7a04e8 | 826 | current_target.to_xfer_partial = current_xfer_partial; |
2bc416ba DJ |
827 | de_fault (to_rcmd, |
828 | (void (*) (char *, struct ui_file *)) | |
0d06e24b | 829 | tcomplain); |
2bc416ba DJ |
830 | de_fault (to_pid_to_exec_file, |
831 | (char *(*) (int)) | |
0d06e24b | 832 | return_zero); |
2bc416ba DJ |
833 | de_fault (to_async, |
834 | (void (*) (void (*) (enum inferior_event_type, void*), void*)) | |
0d06e24b | 835 | tcomplain); |
c2250ad1 UW |
836 | de_fault (to_thread_architecture, |
837 | default_thread_architecture); | |
424163ea | 838 | current_target.to_read_description = NULL; |
0ef643c8 JB |
839 | de_fault (to_get_ada_task_ptid, |
840 | (ptid_t (*) (long, long)) | |
841 | default_get_ada_task_ptid); | |
8a305172 PA |
842 | de_fault (to_supports_multi_process, |
843 | (int (*) (void)) | |
844 | return_zero); | |
d248b706 KY |
845 | de_fault (to_supports_enable_disable_tracepoint, |
846 | (int (*) (void)) | |
847 | return_zero); | |
3065dfb6 SS |
848 | de_fault (to_supports_string_tracing, |
849 | (int (*) (void)) | |
850 | return_zero); | |
35b1e5cc SS |
851 | de_fault (to_trace_init, |
852 | (void (*) (void)) | |
853 | tcomplain); | |
854 | de_fault (to_download_tracepoint, | |
e8ba3115 | 855 | (void (*) (struct bp_location *)) |
35b1e5cc | 856 | tcomplain); |
1e4d1764 YQ |
857 | de_fault (to_can_download_tracepoint, |
858 | (int (*) (void)) | |
859 | return_zero); | |
35b1e5cc SS |
860 | de_fault (to_download_trace_state_variable, |
861 | (void (*) (struct trace_state_variable *)) | |
862 | tcomplain); | |
d248b706 KY |
863 | de_fault (to_enable_tracepoint, |
864 | (void (*) (struct bp_location *)) | |
865 | tcomplain); | |
866 | de_fault (to_disable_tracepoint, | |
867 | (void (*) (struct bp_location *)) | |
868 | tcomplain); | |
35b1e5cc SS |
869 | de_fault (to_trace_set_readonly_regions, |
870 | (void (*) (void)) | |
871 | tcomplain); | |
872 | de_fault (to_trace_start, | |
873 | (void (*) (void)) | |
874 | tcomplain); | |
875 | de_fault (to_get_trace_status, | |
00bf0b85 | 876 | (int (*) (struct trace_status *)) |
35b1e5cc | 877 | return_minus_one); |
f196051f SS |
878 | de_fault (to_get_tracepoint_status, |
879 | (void (*) (struct breakpoint *, struct uploaded_tp *)) | |
880 | tcomplain); | |
35b1e5cc SS |
881 | de_fault (to_trace_stop, |
882 | (void (*) (void)) | |
883 | tcomplain); | |
884 | de_fault (to_trace_find, | |
885 | (int (*) (enum trace_find_type, int, ULONGEST, ULONGEST, int *)) | |
4136fdd2 | 886 | return_minus_one); |
35b1e5cc SS |
887 | de_fault (to_get_trace_state_variable_value, |
888 | (int (*) (int, LONGEST *)) | |
889 | return_zero); | |
00bf0b85 | 890 | de_fault (to_save_trace_data, |
011aacb0 | 891 | (int (*) (const char *)) |
00bf0b85 SS |
892 | tcomplain); |
893 | de_fault (to_upload_tracepoints, | |
894 | (int (*) (struct uploaded_tp **)) | |
895 | return_zero); | |
896 | de_fault (to_upload_trace_state_variables, | |
897 | (int (*) (struct uploaded_tsv **)) | |
898 | return_zero); | |
899 | de_fault (to_get_raw_trace_data, | |
900 | (LONGEST (*) (gdb_byte *, ULONGEST, LONGEST)) | |
901 | tcomplain); | |
405f8e94 SS |
902 | de_fault (to_get_min_fast_tracepoint_insn_len, |
903 | (int (*) (void)) | |
904 | return_minus_one); | |
35b1e5cc SS |
905 | de_fault (to_set_disconnected_tracing, |
906 | (void (*) (int)) | |
4daf5ac0 SS |
907 | target_ignore); |
908 | de_fault (to_set_circular_trace_buffer, | |
909 | (void (*) (int)) | |
910 | target_ignore); | |
f196051f SS |
911 | de_fault (to_set_trace_notes, |
912 | (int (*) (char *, char *, char *)) | |
913 | return_zero); | |
711e434b PM |
914 | de_fault (to_get_tib_address, |
915 | (int (*) (ptid_t, CORE_ADDR *)) | |
916 | tcomplain); | |
d914c394 SS |
917 | de_fault (to_set_permissions, |
918 | (void (*) (void)) | |
919 | target_ignore); | |
0fb4aa4b PA |
920 | de_fault (to_static_tracepoint_marker_at, |
921 | (int (*) (CORE_ADDR, struct static_tracepoint_marker *)) | |
922 | return_zero); | |
923 | de_fault (to_static_tracepoint_markers_by_strid, | |
924 | (VEC(static_tracepoint_marker_p) * (*) (const char *)) | |
925 | tcomplain); | |
b3b9301e PA |
926 | de_fault (to_traceframe_info, |
927 | (struct traceframe_info * (*) (void)) | |
928 | tcomplain); | |
32231432 PA |
929 | de_fault (to_execution_direction, default_execution_direction); |
930 | ||
c906108c | 931 | #undef de_fault |
c906108c | 932 | |
7998dfc3 AC |
933 | /* Finally, position the target-stack beneath the squashed |
934 | "current_target". That way code looking for a non-inherited | |
935 | target method can quickly and simply find it. */ | |
936 | current_target.beneath = target_stack; | |
b4b61fdb DJ |
937 | |
938 | if (targetdebug) | |
939 | setup_target_debug (); | |
c906108c SS |
940 | } |
941 | ||
942 | /* Push a new target type into the stack of the existing target accessors, | |
943 | possibly superseding some of the existing accessors. | |
944 | ||
c906108c SS |
945 | Rather than allow an empty stack, we always have the dummy target at |
946 | the bottom stratum, so we can call the function vectors without | |
947 | checking them. */ | |
948 | ||
b26a4dcb | 949 | void |
fba45db2 | 950 | push_target (struct target_ops *t) |
c906108c | 951 | { |
258b763a | 952 | struct target_ops **cur; |
c906108c SS |
953 | |
954 | /* Check magic number. If wrong, it probably means someone changed | |
955 | the struct definition, but not all the places that initialize one. */ | |
956 | if (t->to_magic != OPS_MAGIC) | |
957 | { | |
c5aa993b JM |
958 | fprintf_unfiltered (gdb_stderr, |
959 | "Magic number of %s target struct wrong\n", | |
960 | t->to_shortname); | |
3e43a32a MS |
961 | internal_error (__FILE__, __LINE__, |
962 | _("failed internal consistency check")); | |
c906108c SS |
963 | } |
964 | ||
258b763a AC |
965 | /* Find the proper stratum to install this target in. */ |
966 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
c906108c | 967 | { |
258b763a | 968 | if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum) |
c906108c SS |
969 | break; |
970 | } | |
971 | ||
258b763a | 972 | /* If there's already targets at this stratum, remove them. */ |
88c231eb | 973 | /* FIXME: cagney/2003-10-15: I think this should be popping all |
258b763a AC |
974 | targets to CUR, and not just those at this stratum level. */ |
975 | while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum) | |
976 | { | |
977 | /* There's already something at this stratum level. Close it, | |
978 | and un-hook it from the stack. */ | |
979 | struct target_ops *tmp = (*cur); | |
5d502164 | 980 | |
258b763a AC |
981 | (*cur) = (*cur)->beneath; |
982 | tmp->beneath = NULL; | |
f1c07ab0 | 983 | target_close (tmp, 0); |
258b763a | 984 | } |
c906108c SS |
985 | |
986 | /* We have removed all targets in our stratum, now add the new one. */ | |
258b763a AC |
987 | t->beneath = (*cur); |
988 | (*cur) = t; | |
c906108c SS |
989 | |
990 | update_current_target (); | |
c906108c SS |
991 | } |
992 | ||
2bc416ba | 993 | /* Remove a target_ops vector from the stack, wherever it may be. |
c906108c SS |
994 | Return how many times it was removed (0 or 1). */ |
995 | ||
996 | int | |
fba45db2 | 997 | unpush_target (struct target_ops *t) |
c906108c | 998 | { |
258b763a AC |
999 | struct target_ops **cur; |
1000 | struct target_ops *tmp; | |
c906108c | 1001 | |
c8d104ad PA |
1002 | if (t->to_stratum == dummy_stratum) |
1003 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 1004 | _("Attempt to unpush the dummy target")); |
c8d104ad | 1005 | |
c906108c | 1006 | /* Look for the specified target. Note that we assume that a target |
c378eb4e | 1007 | can only occur once in the target stack. */ |
c906108c | 1008 | |
258b763a AC |
1009 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) |
1010 | { | |
1011 | if ((*cur) == t) | |
1012 | break; | |
1013 | } | |
c906108c | 1014 | |
258b763a | 1015 | if ((*cur) == NULL) |
c378eb4e | 1016 | return 0; /* Didn't find target_ops, quit now. */ |
c906108c | 1017 | |
5269965e AC |
1018 | /* NOTE: cagney/2003-12-06: In '94 the close call was made |
1019 | unconditional by moving it to before the above check that the | |
1020 | target was in the target stack (something about "Change the way | |
1021 | pushing and popping of targets work to support target overlays | |
1022 | and inheritance"). This doesn't make much sense - only open | |
1023 | targets should be closed. */ | |
1024 | target_close (t, 0); | |
1025 | ||
c378eb4e | 1026 | /* Unchain the target. */ |
258b763a AC |
1027 | tmp = (*cur); |
1028 | (*cur) = (*cur)->beneath; | |
1029 | tmp->beneath = NULL; | |
c906108c SS |
1030 | |
1031 | update_current_target (); | |
c906108c SS |
1032 | |
1033 | return 1; | |
1034 | } | |
1035 | ||
1036 | void | |
fba45db2 | 1037 | pop_target (void) |
c906108c | 1038 | { |
c378eb4e | 1039 | target_close (target_stack, 0); /* Let it clean up. */ |
258b763a | 1040 | if (unpush_target (target_stack) == 1) |
c906108c SS |
1041 | return; |
1042 | ||
c5aa993b JM |
1043 | fprintf_unfiltered (gdb_stderr, |
1044 | "pop_target couldn't find target %s\n", | |
1045 | current_target.to_shortname); | |
5d502164 MS |
1046 | internal_error (__FILE__, __LINE__, |
1047 | _("failed internal consistency check")); | |
c906108c SS |
1048 | } |
1049 | ||
aa76d38d | 1050 | void |
87ab71f0 | 1051 | pop_all_targets_above (enum strata above_stratum, int quitting) |
aa76d38d | 1052 | { |
87ab71f0 | 1053 | while ((int) (current_target.to_stratum) > (int) above_stratum) |
aa76d38d | 1054 | { |
b52323fa | 1055 | target_close (target_stack, quitting); |
aa76d38d PA |
1056 | if (!unpush_target (target_stack)) |
1057 | { | |
1058 | fprintf_unfiltered (gdb_stderr, | |
1059 | "pop_all_targets couldn't find target %s\n", | |
b52323fa | 1060 | target_stack->to_shortname); |
aa76d38d PA |
1061 | internal_error (__FILE__, __LINE__, |
1062 | _("failed internal consistency check")); | |
1063 | break; | |
1064 | } | |
1065 | } | |
1066 | } | |
1067 | ||
87ab71f0 PA |
1068 | void |
1069 | pop_all_targets (int quitting) | |
1070 | { | |
1071 | pop_all_targets_above (dummy_stratum, quitting); | |
1072 | } | |
1073 | ||
c0edd9ed JK |
1074 | /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */ |
1075 | ||
1076 | int | |
1077 | target_is_pushed (struct target_ops *t) | |
1078 | { | |
1079 | struct target_ops **cur; | |
1080 | ||
1081 | /* Check magic number. If wrong, it probably means someone changed | |
1082 | the struct definition, but not all the places that initialize one. */ | |
1083 | if (t->to_magic != OPS_MAGIC) | |
1084 | { | |
1085 | fprintf_unfiltered (gdb_stderr, | |
1086 | "Magic number of %s target struct wrong\n", | |
1087 | t->to_shortname); | |
3e43a32a MS |
1088 | internal_error (__FILE__, __LINE__, |
1089 | _("failed internal consistency check")); | |
c0edd9ed JK |
1090 | } |
1091 | ||
1092 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
1093 | if (*cur == t) | |
1094 | return 1; | |
1095 | ||
1096 | return 0; | |
1097 | } | |
1098 | ||
72f5cf0e | 1099 | /* Using the objfile specified in OBJFILE, find the address for the |
9e35dae4 DJ |
1100 | current thread's thread-local storage with offset OFFSET. */ |
1101 | CORE_ADDR | |
1102 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) | |
1103 | { | |
1104 | volatile CORE_ADDR addr = 0; | |
117de6a9 PA |
1105 | struct target_ops *target; |
1106 | ||
1107 | for (target = current_target.beneath; | |
1108 | target != NULL; | |
1109 | target = target->beneath) | |
1110 | { | |
1111 | if (target->to_get_thread_local_address != NULL) | |
1112 | break; | |
1113 | } | |
9e35dae4 | 1114 | |
117de6a9 | 1115 | if (target != NULL |
1cf3db46 | 1116 | && gdbarch_fetch_tls_load_module_address_p (target_gdbarch)) |
9e35dae4 DJ |
1117 | { |
1118 | ptid_t ptid = inferior_ptid; | |
1119 | volatile struct gdb_exception ex; | |
1120 | ||
1121 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
1122 | { | |
1123 | CORE_ADDR lm_addr; | |
1124 | ||
1125 | /* Fetch the load module address for this objfile. */ | |
1cf3db46 | 1126 | lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch, |
9e35dae4 DJ |
1127 | objfile); |
1128 | /* If it's 0, throw the appropriate exception. */ | |
1129 | if (lm_addr == 0) | |
1130 | throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR, | |
1131 | _("TLS load module not found")); | |
1132 | ||
3e43a32a MS |
1133 | addr = target->to_get_thread_local_address (target, ptid, |
1134 | lm_addr, offset); | |
9e35dae4 DJ |
1135 | } |
1136 | /* If an error occurred, print TLS related messages here. Otherwise, | |
1137 | throw the error to some higher catcher. */ | |
1138 | if (ex.reason < 0) | |
1139 | { | |
1140 | int objfile_is_library = (objfile->flags & OBJF_SHARED); | |
1141 | ||
1142 | switch (ex.error) | |
1143 | { | |
1144 | case TLS_NO_LIBRARY_SUPPORT_ERROR: | |
3e43a32a MS |
1145 | error (_("Cannot find thread-local variables " |
1146 | "in this thread library.")); | |
9e35dae4 DJ |
1147 | break; |
1148 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: | |
1149 | if (objfile_is_library) | |
1150 | error (_("Cannot find shared library `%s' in dynamic" | |
1151 | " linker's load module list"), objfile->name); | |
1152 | else | |
1153 | error (_("Cannot find executable file `%s' in dynamic" | |
1154 | " linker's load module list"), objfile->name); | |
1155 | break; | |
1156 | case TLS_NOT_ALLOCATED_YET_ERROR: | |
1157 | if (objfile_is_library) | |
1158 | error (_("The inferior has not yet allocated storage for" | |
1159 | " thread-local variables in\n" | |
1160 | "the shared library `%s'\n" | |
1161 | "for %s"), | |
1162 | objfile->name, target_pid_to_str (ptid)); | |
1163 | else | |
1164 | error (_("The inferior has not yet allocated storage for" | |
1165 | " thread-local variables in\n" | |
1166 | "the executable `%s'\n" | |
1167 | "for %s"), | |
1168 | objfile->name, target_pid_to_str (ptid)); | |
1169 | break; | |
1170 | case TLS_GENERIC_ERROR: | |
1171 | if (objfile_is_library) | |
1172 | error (_("Cannot find thread-local storage for %s, " | |
1173 | "shared library %s:\n%s"), | |
1174 | target_pid_to_str (ptid), | |
1175 | objfile->name, ex.message); | |
1176 | else | |
1177 | error (_("Cannot find thread-local storage for %s, " | |
1178 | "executable file %s:\n%s"), | |
1179 | target_pid_to_str (ptid), | |
1180 | objfile->name, ex.message); | |
1181 | break; | |
1182 | default: | |
1183 | throw_exception (ex); | |
1184 | break; | |
1185 | } | |
1186 | } | |
1187 | } | |
1188 | /* It wouldn't be wrong here to try a gdbarch method, too; finding | |
1189 | TLS is an ABI-specific thing. But we don't do that yet. */ | |
1190 | else | |
1191 | error (_("Cannot find thread-local variables on this target")); | |
1192 | ||
1193 | return addr; | |
1194 | } | |
1195 | ||
c906108c SS |
1196 | #undef MIN |
1197 | #define MIN(A, B) (((A) <= (B)) ? (A) : (B)) | |
1198 | ||
1199 | /* target_read_string -- read a null terminated string, up to LEN bytes, | |
1200 | from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful. | |
1201 | Set *STRING to a pointer to malloc'd memory containing the data; the caller | |
1202 | is responsible for freeing it. Return the number of bytes successfully | |
1203 | read. */ | |
1204 | ||
1205 | int | |
fba45db2 | 1206 | target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop) |
c906108c SS |
1207 | { |
1208 | int tlen, origlen, offset, i; | |
1b0ba102 | 1209 | gdb_byte buf[4]; |
c906108c SS |
1210 | int errcode = 0; |
1211 | char *buffer; | |
1212 | int buffer_allocated; | |
1213 | char *bufptr; | |
1214 | unsigned int nbytes_read = 0; | |
1215 | ||
6217bf3e MS |
1216 | gdb_assert (string); |
1217 | ||
c906108c SS |
1218 | /* Small for testing. */ |
1219 | buffer_allocated = 4; | |
1220 | buffer = xmalloc (buffer_allocated); | |
1221 | bufptr = buffer; | |
1222 | ||
1223 | origlen = len; | |
1224 | ||
1225 | while (len > 0) | |
1226 | { | |
1227 | tlen = MIN (len, 4 - (memaddr & 3)); | |
1228 | offset = memaddr & 3; | |
1229 | ||
1b0ba102 | 1230 | errcode = target_read_memory (memaddr & ~3, buf, sizeof buf); |
c906108c SS |
1231 | if (errcode != 0) |
1232 | { | |
1233 | /* The transfer request might have crossed the boundary to an | |
c378eb4e | 1234 | unallocated region of memory. Retry the transfer, requesting |
c906108c SS |
1235 | a single byte. */ |
1236 | tlen = 1; | |
1237 | offset = 0; | |
b8eb5af0 | 1238 | errcode = target_read_memory (memaddr, buf, 1); |
c906108c SS |
1239 | if (errcode != 0) |
1240 | goto done; | |
1241 | } | |
1242 | ||
1243 | if (bufptr - buffer + tlen > buffer_allocated) | |
1244 | { | |
1245 | unsigned int bytes; | |
5d502164 | 1246 | |
c906108c SS |
1247 | bytes = bufptr - buffer; |
1248 | buffer_allocated *= 2; | |
1249 | buffer = xrealloc (buffer, buffer_allocated); | |
1250 | bufptr = buffer + bytes; | |
1251 | } | |
1252 | ||
1253 | for (i = 0; i < tlen; i++) | |
1254 | { | |
1255 | *bufptr++ = buf[i + offset]; | |
1256 | if (buf[i + offset] == '\000') | |
1257 | { | |
1258 | nbytes_read += i + 1; | |
1259 | goto done; | |
1260 | } | |
1261 | } | |
1262 | ||
1263 | memaddr += tlen; | |
1264 | len -= tlen; | |
1265 | nbytes_read += tlen; | |
1266 | } | |
c5aa993b | 1267 | done: |
6217bf3e | 1268 | *string = buffer; |
c906108c SS |
1269 | if (errnop != NULL) |
1270 | *errnop = errcode; | |
c906108c SS |
1271 | return nbytes_read; |
1272 | } | |
1273 | ||
07b82ea5 PA |
1274 | struct target_section_table * |
1275 | target_get_section_table (struct target_ops *target) | |
1276 | { | |
1277 | struct target_ops *t; | |
1278 | ||
1279 | if (targetdebug) | |
1280 | fprintf_unfiltered (gdb_stdlog, "target_get_section_table ()\n"); | |
1281 | ||
1282 | for (t = target; t != NULL; t = t->beneath) | |
1283 | if (t->to_get_section_table != NULL) | |
1284 | return (*t->to_get_section_table) (t); | |
1285 | ||
1286 | return NULL; | |
1287 | } | |
1288 | ||
8db32d44 | 1289 | /* Find a section containing ADDR. */ |
07b82ea5 | 1290 | |
0542c86d | 1291 | struct target_section * |
8db32d44 AC |
1292 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
1293 | { | |
07b82ea5 | 1294 | struct target_section_table *table = target_get_section_table (target); |
0542c86d | 1295 | struct target_section *secp; |
07b82ea5 PA |
1296 | |
1297 | if (table == NULL) | |
1298 | return NULL; | |
1299 | ||
1300 | for (secp = table->sections; secp < table->sections_end; secp++) | |
8db32d44 AC |
1301 | { |
1302 | if (addr >= secp->addr && addr < secp->endaddr) | |
1303 | return secp; | |
1304 | } | |
1305 | return NULL; | |
1306 | } | |
1307 | ||
e6e4e701 PA |
1308 | /* Read memory from the live target, even if currently inspecting a |
1309 | traceframe. The return is the same as that of target_read. */ | |
1310 | ||
1311 | static LONGEST | |
1312 | target_read_live_memory (enum target_object object, | |
1313 | ULONGEST memaddr, gdb_byte *myaddr, LONGEST len) | |
1314 | { | |
1315 | int ret; | |
1316 | struct cleanup *cleanup; | |
1317 | ||
1318 | /* Switch momentarily out of tfind mode so to access live memory. | |
1319 | Note that this must not clear global state, such as the frame | |
1320 | cache, which must still remain valid for the previous traceframe. | |
1321 | We may be _building_ the frame cache at this point. */ | |
1322 | cleanup = make_cleanup_restore_traceframe_number (); | |
1323 | set_traceframe_number (-1); | |
1324 | ||
1325 | ret = target_read (current_target.beneath, object, NULL, | |
1326 | myaddr, memaddr, len); | |
1327 | ||
1328 | do_cleanups (cleanup); | |
1329 | return ret; | |
1330 | } | |
1331 | ||
1332 | /* Using the set of read-only target sections of OPS, read live | |
1333 | read-only memory. Note that the actual reads start from the | |
5657161f PA |
1334 | top-most target again. |
1335 | ||
1336 | For interface/parameters/return description see target.h, | |
1337 | to_xfer_partial. */ | |
e6e4e701 PA |
1338 | |
1339 | static LONGEST | |
1340 | memory_xfer_live_readonly_partial (struct target_ops *ops, | |
1341 | enum target_object object, | |
1342 | gdb_byte *readbuf, ULONGEST memaddr, | |
1343 | LONGEST len) | |
1344 | { | |
1345 | struct target_section *secp; | |
1346 | struct target_section_table *table; | |
1347 | ||
1348 | secp = target_section_by_addr (ops, memaddr); | |
1349 | if (secp != NULL | |
1350 | && (bfd_get_section_flags (secp->bfd, secp->the_bfd_section) | |
1351 | & SEC_READONLY)) | |
1352 | { | |
1353 | struct target_section *p; | |
1354 | ULONGEST memend = memaddr + len; | |
1355 | ||
1356 | table = target_get_section_table (ops); | |
1357 | ||
1358 | for (p = table->sections; p < table->sections_end; p++) | |
1359 | { | |
1360 | if (memaddr >= p->addr) | |
1361 | { | |
1362 | if (memend <= p->endaddr) | |
1363 | { | |
1364 | /* Entire transfer is within this section. */ | |
1365 | return target_read_live_memory (object, memaddr, | |
1366 | readbuf, len); | |
1367 | } | |
1368 | else if (memaddr >= p->endaddr) | |
1369 | { | |
1370 | /* This section ends before the transfer starts. */ | |
1371 | continue; | |
1372 | } | |
1373 | else | |
1374 | { | |
1375 | /* This section overlaps the transfer. Just do half. */ | |
1376 | len = p->endaddr - memaddr; | |
1377 | return target_read_live_memory (object, memaddr, | |
1378 | readbuf, len); | |
1379 | } | |
1380 | } | |
1381 | } | |
1382 | } | |
1383 | ||
1384 | return 0; | |
1385 | } | |
1386 | ||
7f79c47e DE |
1387 | /* Perform a partial memory transfer. |
1388 | For docs see target.h, to_xfer_partial. */ | |
cf7a04e8 DJ |
1389 | |
1390 | static LONGEST | |
f0ba3972 PA |
1391 | memory_xfer_partial_1 (struct target_ops *ops, enum target_object object, |
1392 | void *readbuf, const void *writebuf, ULONGEST memaddr, | |
1393 | LONGEST len) | |
0779438d | 1394 | { |
cf7a04e8 DJ |
1395 | LONGEST res; |
1396 | int reg_len; | |
1397 | struct mem_region *region; | |
4e5d721f | 1398 | struct inferior *inf; |
cf7a04e8 | 1399 | |
07b82ea5 PA |
1400 | /* For accesses to unmapped overlay sections, read directly from |
1401 | files. Must do this first, as MEMADDR may need adjustment. */ | |
1402 | if (readbuf != NULL && overlay_debugging) | |
1403 | { | |
1404 | struct obj_section *section = find_pc_overlay (memaddr); | |
5d502164 | 1405 | |
07b82ea5 PA |
1406 | if (pc_in_unmapped_range (memaddr, section)) |
1407 | { | |
1408 | struct target_section_table *table | |
1409 | = target_get_section_table (ops); | |
1410 | const char *section_name = section->the_bfd_section->name; | |
5d502164 | 1411 | |
07b82ea5 PA |
1412 | memaddr = overlay_mapped_address (memaddr, section); |
1413 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
1414 | memaddr, len, | |
1415 | table->sections, | |
1416 | table->sections_end, | |
1417 | section_name); | |
1418 | } | |
1419 | } | |
1420 | ||
1421 | /* Try the executable files, if "trust-readonly-sections" is set. */ | |
cf7a04e8 DJ |
1422 | if (readbuf != NULL && trust_readonly) |
1423 | { | |
0542c86d | 1424 | struct target_section *secp; |
07b82ea5 | 1425 | struct target_section_table *table; |
cf7a04e8 DJ |
1426 | |
1427 | secp = target_section_by_addr (ops, memaddr); | |
1428 | if (secp != NULL | |
1429 | && (bfd_get_section_flags (secp->bfd, secp->the_bfd_section) | |
1430 | & SEC_READONLY)) | |
07b82ea5 PA |
1431 | { |
1432 | table = target_get_section_table (ops); | |
1433 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
1434 | memaddr, len, | |
1435 | table->sections, | |
1436 | table->sections_end, | |
1437 | NULL); | |
1438 | } | |
98646950 UW |
1439 | } |
1440 | ||
e6e4e701 PA |
1441 | /* If reading unavailable memory in the context of traceframes, and |
1442 | this address falls within a read-only section, fallback to | |
1443 | reading from live memory. */ | |
1444 | if (readbuf != NULL && get_traceframe_number () != -1) | |
1445 | { | |
1446 | VEC(mem_range_s) *available; | |
1447 | ||
1448 | /* If we fail to get the set of available memory, then the | |
1449 | target does not support querying traceframe info, and so we | |
1450 | attempt reading from the traceframe anyway (assuming the | |
1451 | target implements the old QTro packet then). */ | |
1452 | if (traceframe_available_memory (&available, memaddr, len)) | |
1453 | { | |
1454 | struct cleanup *old_chain; | |
1455 | ||
1456 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available); | |
1457 | ||
1458 | if (VEC_empty (mem_range_s, available) | |
1459 | || VEC_index (mem_range_s, available, 0)->start != memaddr) | |
1460 | { | |
1461 | /* Don't read into the traceframe's available | |
1462 | memory. */ | |
1463 | if (!VEC_empty (mem_range_s, available)) | |
1464 | { | |
1465 | LONGEST oldlen = len; | |
1466 | ||
1467 | len = VEC_index (mem_range_s, available, 0)->start - memaddr; | |
1468 | gdb_assert (len <= oldlen); | |
1469 | } | |
1470 | ||
1471 | do_cleanups (old_chain); | |
1472 | ||
1473 | /* This goes through the topmost target again. */ | |
1474 | res = memory_xfer_live_readonly_partial (ops, object, | |
1475 | readbuf, memaddr, len); | |
1476 | if (res > 0) | |
1477 | return res; | |
1478 | ||
1479 | /* No use trying further, we know some memory starting | |
1480 | at MEMADDR isn't available. */ | |
1481 | return -1; | |
1482 | } | |
1483 | ||
1484 | /* Don't try to read more than how much is available, in | |
1485 | case the target implements the deprecated QTro packet to | |
1486 | cater for older GDBs (the target's knowledge of read-only | |
1487 | sections may be outdated by now). */ | |
1488 | len = VEC_index (mem_range_s, available, 0)->length; | |
1489 | ||
1490 | do_cleanups (old_chain); | |
1491 | } | |
1492 | } | |
1493 | ||
cf7a04e8 DJ |
1494 | /* Try GDB's internal data cache. */ |
1495 | region = lookup_mem_region (memaddr); | |
4b5752d0 VP |
1496 | /* region->hi == 0 means there's no upper bound. */ |
1497 | if (memaddr + len < region->hi || region->hi == 0) | |
cf7a04e8 DJ |
1498 | reg_len = len; |
1499 | else | |
1500 | reg_len = region->hi - memaddr; | |
1501 | ||
1502 | switch (region->attrib.mode) | |
1503 | { | |
1504 | case MEM_RO: | |
1505 | if (writebuf != NULL) | |
1506 | return -1; | |
1507 | break; | |
1508 | ||
1509 | case MEM_WO: | |
1510 | if (readbuf != NULL) | |
1511 | return -1; | |
1512 | break; | |
a76d924d DJ |
1513 | |
1514 | case MEM_FLASH: | |
1515 | /* We only support writing to flash during "load" for now. */ | |
1516 | if (writebuf != NULL) | |
1517 | error (_("Writing to flash memory forbidden in this context")); | |
1518 | break; | |
4b5752d0 VP |
1519 | |
1520 | case MEM_NONE: | |
1521 | return -1; | |
cf7a04e8 DJ |
1522 | } |
1523 | ||
6c95b8df PA |
1524 | if (!ptid_equal (inferior_ptid, null_ptid)) |
1525 | inf = find_inferior_pid (ptid_get_pid (inferior_ptid)); | |
1526 | else | |
1527 | inf = NULL; | |
4e5d721f DE |
1528 | |
1529 | if (inf != NULL | |
2f4d8875 PA |
1530 | /* The dcache reads whole cache lines; that doesn't play well |
1531 | with reading from a trace buffer, because reading outside of | |
1532 | the collected memory range fails. */ | |
1533 | && get_traceframe_number () == -1 | |
4e5d721f DE |
1534 | && (region->attrib.cache |
1535 | || (stack_cache_enabled_p && object == TARGET_OBJECT_STACK_MEMORY))) | |
cf7a04e8 | 1536 | { |
cf7a04e8 | 1537 | if (readbuf != NULL) |
25f122dc | 1538 | res = dcache_xfer_memory (ops, target_dcache, memaddr, readbuf, |
cf7a04e8 DJ |
1539 | reg_len, 0); |
1540 | else | |
1541 | /* FIXME drow/2006-08-09: If we're going to preserve const | |
1542 | correctness dcache_xfer_memory should take readbuf and | |
1543 | writebuf. */ | |
25f122dc | 1544 | res = dcache_xfer_memory (ops, target_dcache, memaddr, |
cf7a04e8 DJ |
1545 | (void *) writebuf, |
1546 | reg_len, 1); | |
1547 | if (res <= 0) | |
1548 | return -1; | |
1549 | else | |
f0ba3972 | 1550 | return res; |
cf7a04e8 DJ |
1551 | } |
1552 | ||
1553 | /* If none of those methods found the memory we wanted, fall back | |
1554 | to a target partial transfer. Normally a single call to | |
1555 | to_xfer_partial is enough; if it doesn't recognize an object | |
1556 | it will call the to_xfer_partial of the next target down. | |
1557 | But for memory this won't do. Memory is the only target | |
1558 | object which can be read from more than one valid target. | |
1559 | A core file, for instance, could have some of memory but | |
1560 | delegate other bits to the target below it. So, we must | |
1561 | manually try all targets. */ | |
1562 | ||
1563 | do | |
1564 | { | |
1565 | res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
4b5752d0 | 1566 | readbuf, writebuf, memaddr, reg_len); |
cf7a04e8 | 1567 | if (res > 0) |
8defab1a | 1568 | break; |
cf7a04e8 | 1569 | |
5ad3a4ca DJ |
1570 | /* We want to continue past core files to executables, but not |
1571 | past a running target's memory. */ | |
c35b1492 | 1572 | if (ops->to_has_all_memory (ops)) |
8defab1a | 1573 | break; |
5ad3a4ca | 1574 | |
cf7a04e8 DJ |
1575 | ops = ops->beneath; |
1576 | } | |
1577 | while (ops != NULL); | |
1578 | ||
41dcd03f DE |
1579 | /* Make sure the cache gets updated no matter what - if we are writing |
1580 | to the stack. Even if this write is not tagged as such, we still need | |
1581 | to update the cache. */ | |
1582 | ||
1583 | if (res > 0 | |
1584 | && inf != NULL | |
1585 | && writebuf != NULL | |
1586 | && !region->attrib.cache | |
1587 | && stack_cache_enabled_p | |
1588 | && object != TARGET_OBJECT_STACK_MEMORY) | |
1589 | { | |
7d4f32d3 | 1590 | dcache_update (target_dcache, memaddr, (void *) writebuf, res); |
41dcd03f DE |
1591 | } |
1592 | ||
cf7a04e8 DJ |
1593 | /* If we still haven't got anything, return the last error. We |
1594 | give up. */ | |
1595 | return res; | |
0779438d AC |
1596 | } |
1597 | ||
f0ba3972 PA |
1598 | /* Perform a partial memory transfer. For docs see target.h, |
1599 | to_xfer_partial. */ | |
1600 | ||
1601 | static LONGEST | |
1602 | memory_xfer_partial (struct target_ops *ops, enum target_object object, | |
1603 | void *readbuf, const void *writebuf, ULONGEST memaddr, | |
1604 | LONGEST len) | |
1605 | { | |
1606 | int res; | |
1607 | ||
1608 | /* Zero length requests are ok and require no work. */ | |
1609 | if (len == 0) | |
1610 | return 0; | |
1611 | ||
1612 | /* Fill in READBUF with breakpoint shadows, or WRITEBUF with | |
1613 | breakpoint insns, thus hiding out from higher layers whether | |
1614 | there are software breakpoints inserted in the code stream. */ | |
1615 | if (readbuf != NULL) | |
1616 | { | |
1617 | res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len); | |
1618 | ||
1619 | if (res > 0 && !show_memory_breakpoints) | |
1620 | breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, res); | |
1621 | } | |
1622 | else | |
1623 | { | |
1624 | void *buf; | |
1625 | struct cleanup *old_chain; | |
1626 | ||
1627 | buf = xmalloc (len); | |
1628 | old_chain = make_cleanup (xfree, buf); | |
1629 | memcpy (buf, writebuf, len); | |
1630 | ||
1631 | breakpoint_xfer_memory (NULL, buf, writebuf, memaddr, len); | |
1632 | res = memory_xfer_partial_1 (ops, object, NULL, buf, memaddr, len); | |
1633 | ||
1634 | do_cleanups (old_chain); | |
1635 | } | |
1636 | ||
1637 | return res; | |
1638 | } | |
1639 | ||
8defab1a DJ |
1640 | static void |
1641 | restore_show_memory_breakpoints (void *arg) | |
1642 | { | |
1643 | show_memory_breakpoints = (uintptr_t) arg; | |
1644 | } | |
1645 | ||
1646 | struct cleanup * | |
1647 | make_show_memory_breakpoints_cleanup (int show) | |
1648 | { | |
1649 | int current = show_memory_breakpoints; | |
8defab1a | 1650 | |
5d502164 | 1651 | show_memory_breakpoints = show; |
8defab1a DJ |
1652 | return make_cleanup (restore_show_memory_breakpoints, |
1653 | (void *) (uintptr_t) current); | |
1654 | } | |
1655 | ||
7f79c47e DE |
1656 | /* For docs see target.h, to_xfer_partial. */ |
1657 | ||
27394598 AC |
1658 | static LONGEST |
1659 | target_xfer_partial (struct target_ops *ops, | |
1660 | enum target_object object, const char *annex, | |
1661 | void *readbuf, const void *writebuf, | |
1662 | ULONGEST offset, LONGEST len) | |
1663 | { | |
1664 | LONGEST retval; | |
1665 | ||
1666 | gdb_assert (ops->to_xfer_partial != NULL); | |
cf7a04e8 | 1667 | |
d914c394 SS |
1668 | if (writebuf && !may_write_memory) |
1669 | error (_("Writing to memory is not allowed (addr %s, len %s)"), | |
1670 | core_addr_to_string_nz (offset), plongest (len)); | |
1671 | ||
cf7a04e8 DJ |
1672 | /* If this is a memory transfer, let the memory-specific code |
1673 | have a look at it instead. Memory transfers are more | |
1674 | complicated. */ | |
4e5d721f DE |
1675 | if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY) |
1676 | retval = memory_xfer_partial (ops, object, readbuf, | |
1677 | writebuf, offset, len); | |
cf7a04e8 DJ |
1678 | else |
1679 | { | |
1680 | enum target_object raw_object = object; | |
1681 | ||
1682 | /* If this is a raw memory transfer, request the normal | |
1683 | memory object from other layers. */ | |
1684 | if (raw_object == TARGET_OBJECT_RAW_MEMORY) | |
1685 | raw_object = TARGET_OBJECT_MEMORY; | |
1686 | ||
1687 | retval = ops->to_xfer_partial (ops, raw_object, annex, readbuf, | |
1688 | writebuf, offset, len); | |
1689 | } | |
1690 | ||
27394598 AC |
1691 | if (targetdebug) |
1692 | { | |
1693 | const unsigned char *myaddr = NULL; | |
1694 | ||
1695 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
1696 | "%s:target_xfer_partial " |
1697 | "(%d, %s, %s, %s, %s, %s) = %s", | |
27394598 AC |
1698 | ops->to_shortname, |
1699 | (int) object, | |
1700 | (annex ? annex : "(null)"), | |
53b71562 JB |
1701 | host_address_to_string (readbuf), |
1702 | host_address_to_string (writebuf), | |
0b1553bc UW |
1703 | core_addr_to_string_nz (offset), |
1704 | plongest (len), plongest (retval)); | |
27394598 AC |
1705 | |
1706 | if (readbuf) | |
1707 | myaddr = readbuf; | |
1708 | if (writebuf) | |
1709 | myaddr = writebuf; | |
1710 | if (retval > 0 && myaddr != NULL) | |
1711 | { | |
1712 | int i; | |
2bc416ba | 1713 | |
27394598 AC |
1714 | fputs_unfiltered (", bytes =", gdb_stdlog); |
1715 | for (i = 0; i < retval; i++) | |
1716 | { | |
53b71562 | 1717 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1718 | { |
1719 | if (targetdebug < 2 && i > 0) | |
1720 | { | |
1721 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
1722 | break; | |
1723 | } | |
1724 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1725 | } | |
2bc416ba | 1726 | |
27394598 AC |
1727 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
1728 | } | |
1729 | } | |
2bc416ba | 1730 | |
27394598 AC |
1731 | fputc_unfiltered ('\n', gdb_stdlog); |
1732 | } | |
1733 | return retval; | |
1734 | } | |
1735 | ||
c906108c SS |
1736 | /* Read LEN bytes of target memory at address MEMADDR, placing the results in |
1737 | GDB's memory at MYADDR. Returns either 0 for success or an errno value | |
1738 | if any error occurs. | |
1739 | ||
1740 | If an error occurs, no guarantee is made about the contents of the data at | |
1741 | MYADDR. In particular, the caller should not depend upon partial reads | |
1742 | filling the buffer with good data. There is no way for the caller to know | |
1743 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 | 1744 | deal with partial reads should call target_read (which will retry until |
c378eb4e | 1745 | it makes no progress, and then return how much was transferred). */ |
c906108c SS |
1746 | |
1747 | int | |
fc1a4b47 | 1748 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 1749 | { |
c35b1492 PA |
1750 | /* Dispatch to the topmost target, not the flattened current_target. |
1751 | Memory accesses check target->to_has_(all_)memory, and the | |
1752 | flattened target doesn't inherit those. */ | |
1753 | if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1754 | myaddr, memaddr, len) == len) |
1755 | return 0; | |
0779438d | 1756 | else |
cf7a04e8 | 1757 | return EIO; |
c906108c SS |
1758 | } |
1759 | ||
4e5d721f DE |
1760 | /* Like target_read_memory, but specify explicitly that this is a read from |
1761 | the target's stack. This may trigger different cache behavior. */ | |
1762 | ||
1763 | int | |
1764 | target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, int len) | |
1765 | { | |
1766 | /* Dispatch to the topmost target, not the flattened current_target. | |
1767 | Memory accesses check target->to_has_(all_)memory, and the | |
1768 | flattened target doesn't inherit those. */ | |
1769 | ||
1770 | if (target_read (current_target.beneath, TARGET_OBJECT_STACK_MEMORY, NULL, | |
1771 | myaddr, memaddr, len) == len) | |
1772 | return 0; | |
1773 | else | |
1774 | return EIO; | |
1775 | } | |
1776 | ||
7f79c47e DE |
1777 | /* Write LEN bytes from MYADDR to target memory at address MEMADDR. |
1778 | Returns either 0 for success or an errno value if any error occurs. | |
1779 | If an error occurs, no guarantee is made about how much data got written. | |
1780 | Callers that can deal with partial writes should call target_write. */ | |
1781 | ||
c906108c | 1782 | int |
fc1a4b47 | 1783 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) |
c906108c | 1784 | { |
c35b1492 PA |
1785 | /* Dispatch to the topmost target, not the flattened current_target. |
1786 | Memory accesses check target->to_has_(all_)memory, and the | |
1787 | flattened target doesn't inherit those. */ | |
1788 | if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1789 | myaddr, memaddr, len) == len) |
1790 | return 0; | |
0779438d | 1791 | else |
cf7a04e8 | 1792 | return EIO; |
c906108c | 1793 | } |
c5aa993b | 1794 | |
f0ba3972 PA |
1795 | /* Write LEN bytes from MYADDR to target raw memory at address |
1796 | MEMADDR. Returns either 0 for success or an errno value if any | |
1797 | error occurs. If an error occurs, no guarantee is made about how | |
1798 | much data got written. Callers that can deal with partial writes | |
1799 | should call target_write. */ | |
1800 | ||
1801 | int | |
1802 | target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) | |
1803 | { | |
1804 | /* Dispatch to the topmost target, not the flattened current_target. | |
1805 | Memory accesses check target->to_has_(all_)memory, and the | |
1806 | flattened target doesn't inherit those. */ | |
1807 | if (target_write (current_target.beneath, TARGET_OBJECT_RAW_MEMORY, NULL, | |
1808 | myaddr, memaddr, len) == len) | |
1809 | return 0; | |
1810 | else | |
1811 | return EIO; | |
1812 | } | |
1813 | ||
fd79ecee DJ |
1814 | /* Fetch the target's memory map. */ |
1815 | ||
1816 | VEC(mem_region_s) * | |
1817 | target_memory_map (void) | |
1818 | { | |
1819 | VEC(mem_region_s) *result; | |
1820 | struct mem_region *last_one, *this_one; | |
1821 | int ix; | |
1822 | struct target_ops *t; | |
1823 | ||
1824 | if (targetdebug) | |
1825 | fprintf_unfiltered (gdb_stdlog, "target_memory_map ()\n"); | |
1826 | ||
1827 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1828 | if (t->to_memory_map != NULL) | |
1829 | break; | |
1830 | ||
1831 | if (t == NULL) | |
1832 | return NULL; | |
1833 | ||
1834 | result = t->to_memory_map (t); | |
1835 | if (result == NULL) | |
1836 | return NULL; | |
1837 | ||
1838 | qsort (VEC_address (mem_region_s, result), | |
1839 | VEC_length (mem_region_s, result), | |
1840 | sizeof (struct mem_region), mem_region_cmp); | |
1841 | ||
1842 | /* Check that regions do not overlap. Simultaneously assign | |
1843 | a numbering for the "mem" commands to use to refer to | |
1844 | each region. */ | |
1845 | last_one = NULL; | |
1846 | for (ix = 0; VEC_iterate (mem_region_s, result, ix, this_one); ix++) | |
1847 | { | |
1848 | this_one->number = ix; | |
1849 | ||
1850 | if (last_one && last_one->hi > this_one->lo) | |
1851 | { | |
1852 | warning (_("Overlapping regions in memory map: ignoring")); | |
1853 | VEC_free (mem_region_s, result); | |
1854 | return NULL; | |
1855 | } | |
1856 | last_one = this_one; | |
1857 | } | |
1858 | ||
1859 | return result; | |
1860 | } | |
1861 | ||
a76d924d DJ |
1862 | void |
1863 | target_flash_erase (ULONGEST address, LONGEST length) | |
1864 | { | |
1865 | struct target_ops *t; | |
1866 | ||
1867 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1868 | if (t->to_flash_erase != NULL) | |
5d502164 MS |
1869 | { |
1870 | if (targetdebug) | |
1871 | fprintf_unfiltered (gdb_stdlog, "target_flash_erase (%s, %s)\n", | |
1872 | hex_string (address), phex (length, 0)); | |
1873 | t->to_flash_erase (t, address, length); | |
1874 | return; | |
1875 | } | |
a76d924d DJ |
1876 | |
1877 | tcomplain (); | |
1878 | } | |
1879 | ||
1880 | void | |
1881 | target_flash_done (void) | |
1882 | { | |
1883 | struct target_ops *t; | |
1884 | ||
1885 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1886 | if (t->to_flash_done != NULL) | |
5d502164 MS |
1887 | { |
1888 | if (targetdebug) | |
1889 | fprintf_unfiltered (gdb_stdlog, "target_flash_done\n"); | |
1890 | t->to_flash_done (t); | |
1891 | return; | |
1892 | } | |
a76d924d DJ |
1893 | |
1894 | tcomplain (); | |
1895 | } | |
1896 | ||
920d2a44 AC |
1897 | static void |
1898 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1899 | struct cmd_list_element *c, const char *value) | |
1900 | { | |
3e43a32a MS |
1901 | fprintf_filtered (file, |
1902 | _("Mode for reading from readonly sections is %s.\n"), | |
920d2a44 AC |
1903 | value); |
1904 | } | |
3a11626d | 1905 | |
1e3ff5ad AC |
1906 | /* More generic transfers. */ |
1907 | ||
0088c768 | 1908 | static LONGEST |
8aa91c1e | 1909 | default_xfer_partial (struct target_ops *ops, enum target_object object, |
2bc416ba | 1910 | const char *annex, gdb_byte *readbuf, |
1b0ba102 | 1911 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) |
0088c768 AC |
1912 | { |
1913 | if (object == TARGET_OBJECT_MEMORY | |
c8e73a31 AC |
1914 | && ops->deprecated_xfer_memory != NULL) |
1915 | /* If available, fall back to the target's | |
1916 | "deprecated_xfer_memory" method. */ | |
0088c768 | 1917 | { |
4b8a223f | 1918 | int xfered = -1; |
5d502164 | 1919 | |
0088c768 | 1920 | errno = 0; |
4b8a223f AC |
1921 | if (writebuf != NULL) |
1922 | { | |
1923 | void *buffer = xmalloc (len); | |
1924 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |
5d502164 | 1925 | |
4b8a223f | 1926 | memcpy (buffer, writebuf, len); |
c8e73a31 AC |
1927 | xfered = ops->deprecated_xfer_memory (offset, buffer, len, |
1928 | 1/*write*/, NULL, ops); | |
4b8a223f AC |
1929 | do_cleanups (cleanup); |
1930 | } | |
1931 | if (readbuf != NULL) | |
244e85c8 MS |
1932 | xfered = ops->deprecated_xfer_memory (offset, readbuf, len, |
1933 | 0/*read*/, NULL, ops); | |
0088c768 AC |
1934 | if (xfered > 0) |
1935 | return xfered; | |
1936 | else if (xfered == 0 && errno == 0) | |
c8e73a31 AC |
1937 | /* "deprecated_xfer_memory" uses 0, cross checked against |
1938 | ERRNO as one indication of an error. */ | |
0088c768 AC |
1939 | return 0; |
1940 | else | |
1941 | return -1; | |
1942 | } | |
1943 | else if (ops->beneath != NULL) | |
cf7a04e8 DJ |
1944 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, |
1945 | readbuf, writebuf, offset, len); | |
1946 | else | |
1947 | return -1; | |
1948 | } | |
1949 | ||
1950 | /* The xfer_partial handler for the topmost target. Unlike the default, | |
1951 | it does not need to handle memory specially; it just passes all | |
1952 | requests down the stack. */ | |
1953 | ||
1954 | static LONGEST | |
1955 | current_xfer_partial (struct target_ops *ops, enum target_object object, | |
1956 | const char *annex, gdb_byte *readbuf, | |
1957 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1958 | { | |
1959 | if (ops->beneath != NULL) | |
1960 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, | |
1961 | readbuf, writebuf, offset, len); | |
0088c768 AC |
1962 | else |
1963 | return -1; | |
1964 | } | |
1965 | ||
7f79c47e | 1966 | /* Target vector read/write partial wrapper functions. */ |
0088c768 | 1967 | |
13547ab6 | 1968 | static LONGEST |
1e3ff5ad AC |
1969 | target_read_partial (struct target_ops *ops, |
1970 | enum target_object object, | |
1b0ba102 | 1971 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1972 | ULONGEST offset, LONGEST len) |
1973 | { | |
27394598 | 1974 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len); |
1e3ff5ad AC |
1975 | } |
1976 | ||
13547ab6 | 1977 | static LONGEST |
1e3ff5ad AC |
1978 | target_write_partial (struct target_ops *ops, |
1979 | enum target_object object, | |
1b0ba102 | 1980 | const char *annex, const gdb_byte *buf, |
1e3ff5ad AC |
1981 | ULONGEST offset, LONGEST len) |
1982 | { | |
27394598 | 1983 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len); |
1e3ff5ad AC |
1984 | } |
1985 | ||
1986 | /* Wrappers to perform the full transfer. */ | |
7f79c47e DE |
1987 | |
1988 | /* For docs on target_read see target.h. */ | |
1989 | ||
1e3ff5ad AC |
1990 | LONGEST |
1991 | target_read (struct target_ops *ops, | |
1992 | enum target_object object, | |
1b0ba102 | 1993 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1994 | ULONGEST offset, LONGEST len) |
1995 | { | |
1996 | LONGEST xfered = 0; | |
5d502164 | 1997 | |
1e3ff5ad AC |
1998 | while (xfered < len) |
1999 | { | |
0088c768 | 2000 | LONGEST xfer = target_read_partial (ops, object, annex, |
fc1a4b47 | 2001 | (gdb_byte *) buf + xfered, |
0088c768 | 2002 | offset + xfered, len - xfered); |
5d502164 | 2003 | |
1e3ff5ad | 2004 | /* Call an observer, notifying them of the xfer progress? */ |
13547ab6 DJ |
2005 | if (xfer == 0) |
2006 | return xfered; | |
2007 | if (xfer < 0) | |
0088c768 | 2008 | return -1; |
1e3ff5ad AC |
2009 | xfered += xfer; |
2010 | QUIT; | |
2011 | } | |
2012 | return len; | |
2013 | } | |
2014 | ||
f1a507a1 JB |
2015 | /* Assuming that the entire [begin, end) range of memory cannot be |
2016 | read, try to read whatever subrange is possible to read. | |
2017 | ||
2018 | The function returns, in RESULT, either zero or one memory block. | |
2019 | If there's a readable subrange at the beginning, it is completely | |
2020 | read and returned. Any further readable subrange will not be read. | |
2021 | Otherwise, if there's a readable subrange at the end, it will be | |
2022 | completely read and returned. Any readable subranges before it | |
2023 | (obviously, not starting at the beginning), will be ignored. In | |
2024 | other cases -- either no readable subrange, or readable subrange(s) | |
2025 | that is neither at the beginning, or end, nothing is returned. | |
2026 | ||
2027 | The purpose of this function is to handle a read across a boundary | |
2028 | of accessible memory in a case when memory map is not available. | |
2029 | The above restrictions are fine for this case, but will give | |
2030 | incorrect results if the memory is 'patchy'. However, supporting | |
2031 | 'patchy' memory would require trying to read every single byte, | |
2032 | and it seems unacceptable solution. Explicit memory map is | |
2033 | recommended for this case -- and target_read_memory_robust will | |
2034 | take care of reading multiple ranges then. */ | |
8dedea02 VP |
2035 | |
2036 | static void | |
3e43a32a MS |
2037 | read_whatever_is_readable (struct target_ops *ops, |
2038 | ULONGEST begin, ULONGEST end, | |
8dedea02 | 2039 | VEC(memory_read_result_s) **result) |
d5086790 | 2040 | { |
f1a507a1 | 2041 | gdb_byte *buf = xmalloc (end - begin); |
8dedea02 VP |
2042 | ULONGEST current_begin = begin; |
2043 | ULONGEST current_end = end; | |
2044 | int forward; | |
2045 | memory_read_result_s r; | |
2046 | ||
2047 | /* If we previously failed to read 1 byte, nothing can be done here. */ | |
2048 | if (end - begin <= 1) | |
13b3fd9b MS |
2049 | { |
2050 | xfree (buf); | |
2051 | return; | |
2052 | } | |
8dedea02 VP |
2053 | |
2054 | /* Check that either first or the last byte is readable, and give up | |
c378eb4e | 2055 | if not. This heuristic is meant to permit reading accessible memory |
8dedea02 VP |
2056 | at the boundary of accessible region. */ |
2057 | if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
2058 | buf, begin, 1) == 1) | |
2059 | { | |
2060 | forward = 1; | |
2061 | ++current_begin; | |
2062 | } | |
2063 | else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
2064 | buf + (end-begin) - 1, end - 1, 1) == 1) | |
2065 | { | |
2066 | forward = 0; | |
2067 | --current_end; | |
2068 | } | |
2069 | else | |
2070 | { | |
13b3fd9b | 2071 | xfree (buf); |
8dedea02 VP |
2072 | return; |
2073 | } | |
2074 | ||
2075 | /* Loop invariant is that the [current_begin, current_end) was previously | |
2076 | found to be not readable as a whole. | |
2077 | ||
2078 | Note loop condition -- if the range has 1 byte, we can't divide the range | |
2079 | so there's no point trying further. */ | |
2080 | while (current_end - current_begin > 1) | |
2081 | { | |
2082 | ULONGEST first_half_begin, first_half_end; | |
2083 | ULONGEST second_half_begin, second_half_end; | |
2084 | LONGEST xfer; | |
8dedea02 | 2085 | ULONGEST middle = current_begin + (current_end - current_begin)/2; |
f1a507a1 | 2086 | |
8dedea02 VP |
2087 | if (forward) |
2088 | { | |
2089 | first_half_begin = current_begin; | |
2090 | first_half_end = middle; | |
2091 | second_half_begin = middle; | |
2092 | second_half_end = current_end; | |
2093 | } | |
2094 | else | |
2095 | { | |
2096 | first_half_begin = middle; | |
2097 | first_half_end = current_end; | |
2098 | second_half_begin = current_begin; | |
2099 | second_half_end = middle; | |
2100 | } | |
2101 | ||
2102 | xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2103 | buf + (first_half_begin - begin), | |
2104 | first_half_begin, | |
2105 | first_half_end - first_half_begin); | |
2106 | ||
2107 | if (xfer == first_half_end - first_half_begin) | |
2108 | { | |
c378eb4e | 2109 | /* This half reads up fine. So, the error must be in the |
3e43a32a | 2110 | other half. */ |
8dedea02 VP |
2111 | current_begin = second_half_begin; |
2112 | current_end = second_half_end; | |
2113 | } | |
2114 | else | |
2115 | { | |
c378eb4e MS |
2116 | /* This half is not readable. Because we've tried one byte, we |
2117 | know some part of this half if actually redable. Go to the next | |
8dedea02 VP |
2118 | iteration to divide again and try to read. |
2119 | ||
2120 | We don't handle the other half, because this function only tries | |
2121 | to read a single readable subrange. */ | |
2122 | current_begin = first_half_begin; | |
2123 | current_end = first_half_end; | |
2124 | } | |
2125 | } | |
2126 | ||
2127 | if (forward) | |
2128 | { | |
2129 | /* The [begin, current_begin) range has been read. */ | |
2130 | r.begin = begin; | |
2131 | r.end = current_begin; | |
2132 | r.data = buf; | |
2133 | } | |
2134 | else | |
2135 | { | |
2136 | /* The [current_end, end) range has been read. */ | |
2137 | LONGEST rlen = end - current_end; | |
f1a507a1 | 2138 | |
8dedea02 VP |
2139 | r.data = xmalloc (rlen); |
2140 | memcpy (r.data, buf + current_end - begin, rlen); | |
2141 | r.begin = current_end; | |
2142 | r.end = end; | |
2143 | xfree (buf); | |
2144 | } | |
2145 | VEC_safe_push(memory_read_result_s, (*result), &r); | |
2146 | } | |
2147 | ||
2148 | void | |
2149 | free_memory_read_result_vector (void *x) | |
2150 | { | |
2151 | VEC(memory_read_result_s) *v = x; | |
2152 | memory_read_result_s *current; | |
2153 | int ix; | |
2154 | ||
2155 | for (ix = 0; VEC_iterate (memory_read_result_s, v, ix, current); ++ix) | |
2156 | { | |
2157 | xfree (current->data); | |
2158 | } | |
2159 | VEC_free (memory_read_result_s, v); | |
2160 | } | |
2161 | ||
2162 | VEC(memory_read_result_s) * | |
2163 | read_memory_robust (struct target_ops *ops, ULONGEST offset, LONGEST len) | |
2164 | { | |
2165 | VEC(memory_read_result_s) *result = 0; | |
2166 | ||
2167 | LONGEST xfered = 0; | |
d5086790 VP |
2168 | while (xfered < len) |
2169 | { | |
8dedea02 VP |
2170 | struct mem_region *region = lookup_mem_region (offset + xfered); |
2171 | LONGEST rlen; | |
5d502164 | 2172 | |
8dedea02 VP |
2173 | /* If there is no explicit region, a fake one should be created. */ |
2174 | gdb_assert (region); | |
2175 | ||
2176 | if (region->hi == 0) | |
2177 | rlen = len - xfered; | |
2178 | else | |
2179 | rlen = region->hi - offset; | |
2180 | ||
2181 | if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO) | |
d5086790 | 2182 | { |
c378eb4e | 2183 | /* Cannot read this region. Note that we can end up here only |
8dedea02 VP |
2184 | if the region is explicitly marked inaccessible, or |
2185 | 'inaccessible-by-default' is in effect. */ | |
2186 | xfered += rlen; | |
2187 | } | |
2188 | else | |
2189 | { | |
2190 | LONGEST to_read = min (len - xfered, rlen); | |
2191 | gdb_byte *buffer = (gdb_byte *)xmalloc (to_read); | |
2192 | ||
2193 | LONGEST xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2194 | (gdb_byte *) buffer, | |
2195 | offset + xfered, to_read); | |
2196 | /* Call an observer, notifying them of the xfer progress? */ | |
d5086790 | 2197 | if (xfer <= 0) |
d5086790 | 2198 | { |
c378eb4e | 2199 | /* Got an error reading full chunk. See if maybe we can read |
8dedea02 VP |
2200 | some subrange. */ |
2201 | xfree (buffer); | |
3e43a32a MS |
2202 | read_whatever_is_readable (ops, offset + xfered, |
2203 | offset + xfered + to_read, &result); | |
8dedea02 | 2204 | xfered += to_read; |
d5086790 | 2205 | } |
8dedea02 VP |
2206 | else |
2207 | { | |
2208 | struct memory_read_result r; | |
2209 | r.data = buffer; | |
2210 | r.begin = offset + xfered; | |
2211 | r.end = r.begin + xfer; | |
2212 | VEC_safe_push (memory_read_result_s, result, &r); | |
2213 | xfered += xfer; | |
2214 | } | |
2215 | QUIT; | |
d5086790 | 2216 | } |
d5086790 | 2217 | } |
8dedea02 | 2218 | return result; |
d5086790 VP |
2219 | } |
2220 | ||
8dedea02 | 2221 | |
cf7a04e8 DJ |
2222 | /* An alternative to target_write with progress callbacks. */ |
2223 | ||
1e3ff5ad | 2224 | LONGEST |
cf7a04e8 DJ |
2225 | target_write_with_progress (struct target_ops *ops, |
2226 | enum target_object object, | |
2227 | const char *annex, const gdb_byte *buf, | |
2228 | ULONGEST offset, LONGEST len, | |
2229 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad AC |
2230 | { |
2231 | LONGEST xfered = 0; | |
a76d924d DJ |
2232 | |
2233 | /* Give the progress callback a chance to set up. */ | |
2234 | if (progress) | |
2235 | (*progress) (0, baton); | |
2236 | ||
1e3ff5ad AC |
2237 | while (xfered < len) |
2238 | { | |
2239 | LONGEST xfer = target_write_partial (ops, object, annex, | |
fc1a4b47 | 2240 | (gdb_byte *) buf + xfered, |
1e3ff5ad | 2241 | offset + xfered, len - xfered); |
cf7a04e8 | 2242 | |
13547ab6 DJ |
2243 | if (xfer == 0) |
2244 | return xfered; | |
2245 | if (xfer < 0) | |
0088c768 | 2246 | return -1; |
cf7a04e8 DJ |
2247 | |
2248 | if (progress) | |
2249 | (*progress) (xfer, baton); | |
2250 | ||
1e3ff5ad AC |
2251 | xfered += xfer; |
2252 | QUIT; | |
2253 | } | |
2254 | return len; | |
2255 | } | |
2256 | ||
7f79c47e DE |
2257 | /* For docs on target_write see target.h. */ |
2258 | ||
cf7a04e8 DJ |
2259 | LONGEST |
2260 | target_write (struct target_ops *ops, | |
2261 | enum target_object object, | |
2262 | const char *annex, const gdb_byte *buf, | |
2263 | ULONGEST offset, LONGEST len) | |
2264 | { | |
2265 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
2266 | NULL, NULL); | |
2267 | } | |
2268 | ||
159f81f3 DJ |
2269 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
2270 | the size of the transferred data. PADDING additional bytes are | |
2271 | available in *BUF_P. This is a helper function for | |
2272 | target_read_alloc; see the declaration of that function for more | |
2273 | information. */ | |
13547ab6 | 2274 | |
159f81f3 DJ |
2275 | static LONGEST |
2276 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, | |
2277 | const char *annex, gdb_byte **buf_p, int padding) | |
13547ab6 DJ |
2278 | { |
2279 | size_t buf_alloc, buf_pos; | |
2280 | gdb_byte *buf; | |
2281 | LONGEST n; | |
2282 | ||
2283 | /* This function does not have a length parameter; it reads the | |
2284 | entire OBJECT). Also, it doesn't support objects fetched partly | |
2285 | from one target and partly from another (in a different stratum, | |
2286 | e.g. a core file and an executable). Both reasons make it | |
2287 | unsuitable for reading memory. */ | |
2288 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
2289 | ||
2290 | /* Start by reading up to 4K at a time. The target will throttle | |
2291 | this number down if necessary. */ | |
2292 | buf_alloc = 4096; | |
2293 | buf = xmalloc (buf_alloc); | |
2294 | buf_pos = 0; | |
2295 | while (1) | |
2296 | { | |
2297 | n = target_read_partial (ops, object, annex, &buf[buf_pos], | |
159f81f3 | 2298 | buf_pos, buf_alloc - buf_pos - padding); |
13547ab6 DJ |
2299 | if (n < 0) |
2300 | { | |
2301 | /* An error occurred. */ | |
2302 | xfree (buf); | |
2303 | return -1; | |
2304 | } | |
2305 | else if (n == 0) | |
2306 | { | |
2307 | /* Read all there was. */ | |
2308 | if (buf_pos == 0) | |
2309 | xfree (buf); | |
2310 | else | |
2311 | *buf_p = buf; | |
2312 | return buf_pos; | |
2313 | } | |
2314 | ||
2315 | buf_pos += n; | |
2316 | ||
2317 | /* If the buffer is filling up, expand it. */ | |
2318 | if (buf_alloc < buf_pos * 2) | |
2319 | { | |
2320 | buf_alloc *= 2; | |
2321 | buf = xrealloc (buf, buf_alloc); | |
2322 | } | |
2323 | ||
2324 | QUIT; | |
2325 | } | |
2326 | } | |
2327 | ||
159f81f3 DJ |
2328 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
2329 | the size of the transferred data. See the declaration in "target.h" | |
2330 | function for more information about the return value. */ | |
2331 | ||
2332 | LONGEST | |
2333 | target_read_alloc (struct target_ops *ops, enum target_object object, | |
2334 | const char *annex, gdb_byte **buf_p) | |
2335 | { | |
2336 | return target_read_alloc_1 (ops, object, annex, buf_p, 0); | |
2337 | } | |
2338 | ||
2339 | /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and | |
2340 | returned as a string, allocated using xmalloc. If an error occurs | |
2341 | or the transfer is unsupported, NULL is returned. Empty objects | |
2342 | are returned as allocated but empty strings. A warning is issued | |
2343 | if the result contains any embedded NUL bytes. */ | |
2344 | ||
2345 | char * | |
2346 | target_read_stralloc (struct target_ops *ops, enum target_object object, | |
2347 | const char *annex) | |
2348 | { | |
2349 | gdb_byte *buffer; | |
2350 | LONGEST transferred; | |
2351 | ||
2352 | transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1); | |
2353 | ||
2354 | if (transferred < 0) | |
2355 | return NULL; | |
2356 | ||
2357 | if (transferred == 0) | |
2358 | return xstrdup (""); | |
2359 | ||
2360 | buffer[transferred] = 0; | |
2361 | if (strlen (buffer) < transferred) | |
2362 | warning (_("target object %d, annex %s, " | |
2363 | "contained unexpected null characters"), | |
2364 | (int) object, annex ? annex : "(none)"); | |
2365 | ||
2366 | return (char *) buffer; | |
2367 | } | |
2368 | ||
b6591e8b AC |
2369 | /* Memory transfer methods. */ |
2370 | ||
2371 | void | |
1b0ba102 | 2372 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
2373 | LONGEST len) |
2374 | { | |
07b82ea5 PA |
2375 | /* This method is used to read from an alternate, non-current |
2376 | target. This read must bypass the overlay support (as symbols | |
2377 | don't match this target), and GDB's internal cache (wrong cache | |
2378 | for this target). */ | |
2379 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) | |
b6591e8b AC |
2380 | != len) |
2381 | memory_error (EIO, addr); | |
2382 | } | |
2383 | ||
2384 | ULONGEST | |
5d502164 MS |
2385 | get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr, |
2386 | int len, enum bfd_endian byte_order) | |
b6591e8b | 2387 | { |
f6519ebc | 2388 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
2389 | |
2390 | gdb_assert (len <= sizeof (buf)); | |
2391 | get_target_memory (ops, addr, buf, len); | |
e17a4113 | 2392 | return extract_unsigned_integer (buf, len, byte_order); |
b6591e8b AC |
2393 | } |
2394 | ||
d914c394 SS |
2395 | int |
2396 | target_insert_breakpoint (struct gdbarch *gdbarch, | |
2397 | struct bp_target_info *bp_tgt) | |
2398 | { | |
2399 | if (!may_insert_breakpoints) | |
2400 | { | |
2401 | warning (_("May not insert breakpoints")); | |
2402 | return 1; | |
2403 | } | |
2404 | ||
2405 | return (*current_target.to_insert_breakpoint) (gdbarch, bp_tgt); | |
2406 | } | |
2407 | ||
2408 | int | |
2409 | target_remove_breakpoint (struct gdbarch *gdbarch, | |
2410 | struct bp_target_info *bp_tgt) | |
2411 | { | |
2412 | /* This is kind of a weird case to handle, but the permission might | |
2413 | have been changed after breakpoints were inserted - in which case | |
2414 | we should just take the user literally and assume that any | |
2415 | breakpoints should be left in place. */ | |
2416 | if (!may_insert_breakpoints) | |
2417 | { | |
2418 | warning (_("May not remove breakpoints")); | |
2419 | return 1; | |
2420 | } | |
2421 | ||
2422 | return (*current_target.to_remove_breakpoint) (gdbarch, bp_tgt); | |
2423 | } | |
2424 | ||
c906108c | 2425 | static void |
fba45db2 | 2426 | target_info (char *args, int from_tty) |
c906108c SS |
2427 | { |
2428 | struct target_ops *t; | |
c906108c | 2429 | int has_all_mem = 0; |
c5aa993b | 2430 | |
c906108c | 2431 | if (symfile_objfile != NULL) |
a3f17187 | 2432 | printf_unfiltered (_("Symbols from \"%s\".\n"), symfile_objfile->name); |
c906108c | 2433 | |
258b763a | 2434 | for (t = target_stack; t != NULL; t = t->beneath) |
c906108c | 2435 | { |
c35b1492 | 2436 | if (!(*t->to_has_memory) (t)) |
c906108c SS |
2437 | continue; |
2438 | ||
c5aa993b | 2439 | if ((int) (t->to_stratum) <= (int) dummy_stratum) |
c906108c SS |
2440 | continue; |
2441 | if (has_all_mem) | |
3e43a32a MS |
2442 | printf_unfiltered (_("\tWhile running this, " |
2443 | "GDB does not access memory from...\n")); | |
c5aa993b JM |
2444 | printf_unfiltered ("%s:\n", t->to_longname); |
2445 | (t->to_files_info) (t); | |
c35b1492 | 2446 | has_all_mem = (*t->to_has_all_memory) (t); |
c906108c SS |
2447 | } |
2448 | } | |
2449 | ||
fd79ecee DJ |
2450 | /* This function is called before any new inferior is created, e.g. |
2451 | by running a program, attaching, or connecting to a target. | |
2452 | It cleans up any state from previous invocations which might | |
2453 | change between runs. This is a subset of what target_preopen | |
2454 | resets (things which might change between targets). */ | |
2455 | ||
2456 | void | |
2457 | target_pre_inferior (int from_tty) | |
2458 | { | |
c378eb4e | 2459 | /* Clear out solib state. Otherwise the solib state of the previous |
b9db4ced | 2460 | inferior might have survived and is entirely wrong for the new |
c378eb4e | 2461 | target. This has been observed on GNU/Linux using glibc 2.3. How |
b9db4ced UW |
2462 | to reproduce: |
2463 | ||
2464 | bash$ ./foo& | |
2465 | [1] 4711 | |
2466 | bash$ ./foo& | |
2467 | [1] 4712 | |
2468 | bash$ gdb ./foo | |
2469 | [...] | |
2470 | (gdb) attach 4711 | |
2471 | (gdb) detach | |
2472 | (gdb) attach 4712 | |
2473 | Cannot access memory at address 0xdeadbeef | |
2474 | */ | |
b9db4ced | 2475 | |
50c71eaf PA |
2476 | /* In some OSs, the shared library list is the same/global/shared |
2477 | across inferiors. If code is shared between processes, so are | |
2478 | memory regions and features. */ | |
2479 | if (!gdbarch_has_global_solist (target_gdbarch)) | |
2480 | { | |
2481 | no_shared_libraries (NULL, from_tty); | |
2482 | ||
2483 | invalidate_target_mem_regions (); | |
424163ea | 2484 | |
50c71eaf PA |
2485 | target_clear_description (); |
2486 | } | |
fd79ecee DJ |
2487 | } |
2488 | ||
b8fa0bfa PA |
2489 | /* Callback for iterate_over_inferiors. Gets rid of the given |
2490 | inferior. */ | |
2491 | ||
2492 | static int | |
2493 | dispose_inferior (struct inferior *inf, void *args) | |
2494 | { | |
2495 | struct thread_info *thread; | |
2496 | ||
2497 | thread = any_thread_of_process (inf->pid); | |
2498 | if (thread) | |
2499 | { | |
2500 | switch_to_thread (thread->ptid); | |
2501 | ||
2502 | /* Core inferiors actually should be detached, not killed. */ | |
2503 | if (target_has_execution) | |
2504 | target_kill (); | |
2505 | else | |
2506 | target_detach (NULL, 0); | |
2507 | } | |
2508 | ||
2509 | return 0; | |
2510 | } | |
2511 | ||
c906108c SS |
2512 | /* This is to be called by the open routine before it does |
2513 | anything. */ | |
2514 | ||
2515 | void | |
fba45db2 | 2516 | target_preopen (int from_tty) |
c906108c | 2517 | { |
c5aa993b | 2518 | dont_repeat (); |
c906108c | 2519 | |
b8fa0bfa | 2520 | if (have_inferiors ()) |
c5aa993b | 2521 | { |
adf40b2e | 2522 | if (!from_tty |
b8fa0bfa PA |
2523 | || !have_live_inferiors () |
2524 | || query (_("A program is being debugged already. Kill it? "))) | |
2525 | iterate_over_inferiors (dispose_inferior, NULL); | |
c906108c | 2526 | else |
8a3fe4f8 | 2527 | error (_("Program not killed.")); |
c906108c SS |
2528 | } |
2529 | ||
2530 | /* Calling target_kill may remove the target from the stack. But if | |
2531 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
2532 | /* Leave the exec target, though. The user may be switching from a |
2533 | live process to a core of the same program. */ | |
2534 | pop_all_targets_above (file_stratum, 0); | |
fd79ecee DJ |
2535 | |
2536 | target_pre_inferior (from_tty); | |
c906108c SS |
2537 | } |
2538 | ||
2539 | /* Detach a target after doing deferred register stores. */ | |
2540 | ||
2541 | void | |
fba45db2 | 2542 | target_detach (char *args, int from_tty) |
c906108c | 2543 | { |
136d6dae VP |
2544 | struct target_ops* t; |
2545 | ||
2567c7d9 | 2546 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
2547 | /* Don't remove global breakpoints here. They're removed on |
2548 | disconnection from the target. */ | |
2549 | ; | |
2550 | else | |
2551 | /* If we're in breakpoints-always-inserted mode, have to remove | |
2552 | them before detaching. */ | |
6c95b8df | 2553 | remove_breakpoints_pid (PIDGET (inferior_ptid)); |
74960c60 | 2554 | |
24291992 PA |
2555 | prepare_for_detach (); |
2556 | ||
136d6dae VP |
2557 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2558 | { | |
2559 | if (t->to_detach != NULL) | |
2560 | { | |
2561 | t->to_detach (t, args, from_tty); | |
947b8855 PA |
2562 | if (targetdebug) |
2563 | fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n", | |
2564 | args, from_tty); | |
136d6dae VP |
2565 | return; |
2566 | } | |
2567 | } | |
2568 | ||
9b20d036 | 2569 | internal_error (__FILE__, __LINE__, _("could not find a target to detach")); |
c906108c SS |
2570 | } |
2571 | ||
6ad8ae5c DJ |
2572 | void |
2573 | target_disconnect (char *args, int from_tty) | |
2574 | { | |
597320e7 DJ |
2575 | struct target_ops *t; |
2576 | ||
50c71eaf PA |
2577 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
2578 | are global across processes, we have to remove them before | |
2579 | disconnecting. */ | |
74960c60 VP |
2580 | remove_breakpoints (); |
2581 | ||
597320e7 DJ |
2582 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2583 | if (t->to_disconnect != NULL) | |
2584 | { | |
2585 | if (targetdebug) | |
2586 | fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n", | |
2587 | args, from_tty); | |
2588 | t->to_disconnect (t, args, from_tty); | |
2589 | return; | |
2590 | } | |
2591 | ||
2592 | tcomplain (); | |
6ad8ae5c DJ |
2593 | } |
2594 | ||
117de6a9 | 2595 | ptid_t |
47608cb1 | 2596 | target_wait (ptid_t ptid, struct target_waitstatus *status, int options) |
117de6a9 PA |
2597 | { |
2598 | struct target_ops *t; | |
2599 | ||
2600 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2601 | { | |
2602 | if (t->to_wait != NULL) | |
2603 | { | |
47608cb1 | 2604 | ptid_t retval = (*t->to_wait) (t, ptid, status, options); |
117de6a9 PA |
2605 | |
2606 | if (targetdebug) | |
2607 | { | |
2608 | char *status_string; | |
2609 | ||
2610 | status_string = target_waitstatus_to_string (status); | |
2611 | fprintf_unfiltered (gdb_stdlog, | |
2612 | "target_wait (%d, status) = %d, %s\n", | |
2613 | PIDGET (ptid), PIDGET (retval), | |
2614 | status_string); | |
2615 | xfree (status_string); | |
2616 | } | |
2617 | ||
2618 | return retval; | |
2619 | } | |
2620 | } | |
2621 | ||
2622 | noprocess (); | |
2623 | } | |
2624 | ||
2625 | char * | |
2626 | target_pid_to_str (ptid_t ptid) | |
2627 | { | |
2628 | struct target_ops *t; | |
2629 | ||
2630 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2631 | { | |
2632 | if (t->to_pid_to_str != NULL) | |
2633 | return (*t->to_pid_to_str) (t, ptid); | |
2634 | } | |
2635 | ||
2636 | return normal_pid_to_str (ptid); | |
2637 | } | |
2638 | ||
4694da01 TT |
2639 | char * |
2640 | target_thread_name (struct thread_info *info) | |
2641 | { | |
2642 | struct target_ops *t; | |
2643 | ||
2644 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2645 | { | |
2646 | if (t->to_thread_name != NULL) | |
2647 | return (*t->to_thread_name) (info); | |
2648 | } | |
2649 | ||
2650 | return NULL; | |
2651 | } | |
2652 | ||
e1ac3328 VP |
2653 | void |
2654 | target_resume (ptid_t ptid, int step, enum target_signal signal) | |
2655 | { | |
28439f5e PA |
2656 | struct target_ops *t; |
2657 | ||
4e5d721f | 2658 | target_dcache_invalidate (); |
28439f5e PA |
2659 | |
2660 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2661 | { | |
2662 | if (t->to_resume != NULL) | |
2663 | { | |
2664 | t->to_resume (t, ptid, step, signal); | |
2665 | if (targetdebug) | |
2666 | fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n", | |
2667 | PIDGET (ptid), | |
2668 | step ? "step" : "continue", | |
2669 | target_signal_to_name (signal)); | |
2670 | ||
e66408ed | 2671 | registers_changed_ptid (ptid); |
28439f5e PA |
2672 | set_executing (ptid, 1); |
2673 | set_running (ptid, 1); | |
edb3359d | 2674 | clear_inline_frame_state (ptid); |
28439f5e PA |
2675 | return; |
2676 | } | |
2677 | } | |
2678 | ||
2679 | noprocess (); | |
e1ac3328 | 2680 | } |
2455069d UW |
2681 | |
2682 | void | |
2683 | target_pass_signals (int numsigs, unsigned char *pass_signals) | |
2684 | { | |
2685 | struct target_ops *t; | |
2686 | ||
2687 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2688 | { | |
2689 | if (t->to_pass_signals != NULL) | |
2690 | { | |
2691 | if (targetdebug) | |
2692 | { | |
2693 | int i; | |
2694 | ||
2695 | fprintf_unfiltered (gdb_stdlog, "target_pass_signals (%d, {", | |
2696 | numsigs); | |
2697 | ||
2698 | for (i = 0; i < numsigs; i++) | |
2699 | if (pass_signals[i]) | |
2700 | fprintf_unfiltered (gdb_stdlog, " %s", | |
2701 | target_signal_to_name (i)); | |
2702 | ||
2703 | fprintf_unfiltered (gdb_stdlog, " })\n"); | |
2704 | } | |
2705 | ||
2706 | (*t->to_pass_signals) (numsigs, pass_signals); | |
2707 | return; | |
2708 | } | |
2709 | } | |
2710 | } | |
2711 | ||
ee057212 DJ |
2712 | /* Look through the list of possible targets for a target that can |
2713 | follow forks. */ | |
2714 | ||
2715 | int | |
2716 | target_follow_fork (int follow_child) | |
2717 | { | |
2718 | struct target_ops *t; | |
2719 | ||
2720 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2721 | { | |
2722 | if (t->to_follow_fork != NULL) | |
2723 | { | |
2724 | int retval = t->to_follow_fork (t, follow_child); | |
5d502164 | 2725 | |
ee057212 DJ |
2726 | if (targetdebug) |
2727 | fprintf_unfiltered (gdb_stdlog, "target_follow_fork (%d) = %d\n", | |
2728 | follow_child, retval); | |
2729 | return retval; | |
2730 | } | |
2731 | } | |
2732 | ||
2733 | /* Some target returned a fork event, but did not know how to follow it. */ | |
2734 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 2735 | _("could not find a target to follow fork")); |
ee057212 DJ |
2736 | } |
2737 | ||
136d6dae VP |
2738 | void |
2739 | target_mourn_inferior (void) | |
2740 | { | |
2741 | struct target_ops *t; | |
5d502164 | 2742 | |
136d6dae VP |
2743 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2744 | { | |
2745 | if (t->to_mourn_inferior != NULL) | |
2746 | { | |
2747 | t->to_mourn_inferior (t); | |
947b8855 PA |
2748 | if (targetdebug) |
2749 | fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n"); | |
efbd6e75 JB |
2750 | |
2751 | /* We no longer need to keep handles on any of the object files. | |
2752 | Make sure to release them to avoid unnecessarily locking any | |
2753 | of them while we're not actually debugging. */ | |
2754 | bfd_cache_close_all (); | |
2755 | ||
136d6dae VP |
2756 | return; |
2757 | } | |
2758 | } | |
2759 | ||
2760 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 2761 | _("could not find a target to follow mourn inferior")); |
136d6dae VP |
2762 | } |
2763 | ||
424163ea DJ |
2764 | /* Look for a target which can describe architectural features, starting |
2765 | from TARGET. If we find one, return its description. */ | |
2766 | ||
2767 | const struct target_desc * | |
2768 | target_read_description (struct target_ops *target) | |
2769 | { | |
2770 | struct target_ops *t; | |
2771 | ||
2772 | for (t = target; t != NULL; t = t->beneath) | |
2773 | if (t->to_read_description != NULL) | |
2774 | { | |
2775 | const struct target_desc *tdesc; | |
2776 | ||
2777 | tdesc = t->to_read_description (t); | |
2778 | if (tdesc) | |
2779 | return tdesc; | |
2780 | } | |
2781 | ||
2782 | return NULL; | |
2783 | } | |
2784 | ||
08388c79 DE |
2785 | /* The default implementation of to_search_memory. |
2786 | This implements a basic search of memory, reading target memory and | |
2787 | performing the search here (as opposed to performing the search in on the | |
2788 | target side with, for example, gdbserver). */ | |
2789 | ||
2790 | int | |
2791 | simple_search_memory (struct target_ops *ops, | |
2792 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2793 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2794 | CORE_ADDR *found_addrp) | |
2795 | { | |
2796 | /* NOTE: also defined in find.c testcase. */ | |
2797 | #define SEARCH_CHUNK_SIZE 16000 | |
2798 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
2799 | /* Buffer to hold memory contents for searching. */ | |
2800 | gdb_byte *search_buf; | |
2801 | unsigned search_buf_size; | |
2802 | struct cleanup *old_cleanups; | |
2803 | ||
2804 | search_buf_size = chunk_size + pattern_len - 1; | |
2805 | ||
2806 | /* No point in trying to allocate a buffer larger than the search space. */ | |
2807 | if (search_space_len < search_buf_size) | |
2808 | search_buf_size = search_space_len; | |
2809 | ||
2810 | search_buf = malloc (search_buf_size); | |
2811 | if (search_buf == NULL) | |
5e1471f5 | 2812 | error (_("Unable to allocate memory to perform the search.")); |
08388c79 DE |
2813 | old_cleanups = make_cleanup (free_current_contents, &search_buf); |
2814 | ||
2815 | /* Prime the search buffer. */ | |
2816 | ||
2817 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2818 | search_buf, start_addr, search_buf_size) != search_buf_size) | |
2819 | { | |
5e1471f5 | 2820 | warning (_("Unable to access target memory at %s, halting search."), |
08388c79 DE |
2821 | hex_string (start_addr)); |
2822 | do_cleanups (old_cleanups); | |
2823 | return -1; | |
2824 | } | |
2825 | ||
2826 | /* Perform the search. | |
2827 | ||
2828 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
2829 | When we've scanned N bytes we copy the trailing bytes to the start and | |
2830 | read in another N bytes. */ | |
2831 | ||
2832 | while (search_space_len >= pattern_len) | |
2833 | { | |
2834 | gdb_byte *found_ptr; | |
2835 | unsigned nr_search_bytes = min (search_space_len, search_buf_size); | |
2836 | ||
2837 | found_ptr = memmem (search_buf, nr_search_bytes, | |
2838 | pattern, pattern_len); | |
2839 | ||
2840 | if (found_ptr != NULL) | |
2841 | { | |
2842 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
5d502164 | 2843 | |
08388c79 DE |
2844 | *found_addrp = found_addr; |
2845 | do_cleanups (old_cleanups); | |
2846 | return 1; | |
2847 | } | |
2848 | ||
2849 | /* Not found in this chunk, skip to next chunk. */ | |
2850 | ||
2851 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
2852 | if (search_space_len >= chunk_size) | |
2853 | search_space_len -= chunk_size; | |
2854 | else | |
2855 | search_space_len = 0; | |
2856 | ||
2857 | if (search_space_len >= pattern_len) | |
2858 | { | |
2859 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 2860 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
2861 | int nr_to_read; |
2862 | ||
2863 | /* Copy the trailing part of the previous iteration to the front | |
2864 | of the buffer for the next iteration. */ | |
2865 | gdb_assert (keep_len == pattern_len - 1); | |
2866 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
2867 | ||
2868 | nr_to_read = min (search_space_len - keep_len, chunk_size); | |
2869 | ||
2870 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2871 | search_buf + keep_len, read_addr, | |
2872 | nr_to_read) != nr_to_read) | |
2873 | { | |
9b20d036 MS |
2874 | warning (_("Unable to access target " |
2875 | "memory at %s, halting search."), | |
08388c79 DE |
2876 | hex_string (read_addr)); |
2877 | do_cleanups (old_cleanups); | |
2878 | return -1; | |
2879 | } | |
2880 | ||
2881 | start_addr += chunk_size; | |
2882 | } | |
2883 | } | |
2884 | ||
2885 | /* Not found. */ | |
2886 | ||
2887 | do_cleanups (old_cleanups); | |
2888 | return 0; | |
2889 | } | |
2890 | ||
2891 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the | |
2892 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2893 | ||
2894 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2895 | requiring halting of the search (e.g. memory read error). | |
2896 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2897 | ||
2898 | int | |
2899 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2900 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2901 | CORE_ADDR *found_addrp) | |
2902 | { | |
2903 | struct target_ops *t; | |
2904 | int found; | |
2905 | ||
2906 | /* We don't use INHERIT to set current_target.to_search_memory, | |
2907 | so we have to scan the target stack and handle targetdebug | |
2908 | ourselves. */ | |
2909 | ||
2910 | if (targetdebug) | |
2911 | fprintf_unfiltered (gdb_stdlog, "target_search_memory (%s, ...)\n", | |
2912 | hex_string (start_addr)); | |
2913 | ||
2914 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2915 | if (t->to_search_memory != NULL) | |
2916 | break; | |
2917 | ||
2918 | if (t != NULL) | |
2919 | { | |
2920 | found = t->to_search_memory (t, start_addr, search_space_len, | |
2921 | pattern, pattern_len, found_addrp); | |
2922 | } | |
2923 | else | |
2924 | { | |
2925 | /* If a special version of to_search_memory isn't available, use the | |
2926 | simple version. */ | |
c35b1492 | 2927 | found = simple_search_memory (current_target.beneath, |
08388c79 DE |
2928 | start_addr, search_space_len, |
2929 | pattern, pattern_len, found_addrp); | |
2930 | } | |
2931 | ||
2932 | if (targetdebug) | |
2933 | fprintf_unfiltered (gdb_stdlog, " = %d\n", found); | |
2934 | ||
2935 | return found; | |
2936 | } | |
2937 | ||
8edfe269 DJ |
2938 | /* Look through the currently pushed targets. If none of them will |
2939 | be able to restart the currently running process, issue an error | |
2940 | message. */ | |
2941 | ||
2942 | void | |
2943 | target_require_runnable (void) | |
2944 | { | |
2945 | struct target_ops *t; | |
2946 | ||
2947 | for (t = target_stack; t != NULL; t = t->beneath) | |
2948 | { | |
2949 | /* If this target knows how to create a new program, then | |
2950 | assume we will still be able to after killing the current | |
2951 | one. Either killing and mourning will not pop T, or else | |
2952 | find_default_run_target will find it again. */ | |
2953 | if (t->to_create_inferior != NULL) | |
2954 | return; | |
2955 | ||
2956 | /* Do not worry about thread_stratum targets that can not | |
2957 | create inferiors. Assume they will be pushed again if | |
2958 | necessary, and continue to the process_stratum. */ | |
85e747d2 UW |
2959 | if (t->to_stratum == thread_stratum |
2960 | || t->to_stratum == arch_stratum) | |
8edfe269 DJ |
2961 | continue; |
2962 | ||
3e43a32a MS |
2963 | error (_("The \"%s\" target does not support \"run\". " |
2964 | "Try \"help target\" or \"continue\"."), | |
8edfe269 DJ |
2965 | t->to_shortname); |
2966 | } | |
2967 | ||
2968 | /* This function is only called if the target is running. In that | |
2969 | case there should have been a process_stratum target and it | |
c378eb4e | 2970 | should either know how to create inferiors, or not... */ |
9b20d036 | 2971 | internal_error (__FILE__, __LINE__, _("No targets found")); |
8edfe269 DJ |
2972 | } |
2973 | ||
c906108c SS |
2974 | /* Look through the list of possible targets for a target that can |
2975 | execute a run or attach command without any other data. This is | |
2976 | used to locate the default process stratum. | |
2977 | ||
5f667f2d PA |
2978 | If DO_MESG is not NULL, the result is always valid (error() is |
2979 | called for errors); else, return NULL on error. */ | |
c906108c SS |
2980 | |
2981 | static struct target_ops * | |
fba45db2 | 2982 | find_default_run_target (char *do_mesg) |
c906108c SS |
2983 | { |
2984 | struct target_ops **t; | |
2985 | struct target_ops *runable = NULL; | |
2986 | int count; | |
2987 | ||
2988 | count = 0; | |
2989 | ||
2990 | for (t = target_structs; t < target_structs + target_struct_size; | |
2991 | ++t) | |
2992 | { | |
c5aa993b | 2993 | if ((*t)->to_can_run && target_can_run (*t)) |
c906108c SS |
2994 | { |
2995 | runable = *t; | |
2996 | ++count; | |
2997 | } | |
2998 | } | |
2999 | ||
3000 | if (count != 1) | |
5f667f2d PA |
3001 | { |
3002 | if (do_mesg) | |
3003 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
3004 | else | |
3005 | return NULL; | |
3006 | } | |
c906108c SS |
3007 | |
3008 | return runable; | |
3009 | } | |
3010 | ||
3011 | void | |
136d6dae | 3012 | find_default_attach (struct target_ops *ops, char *args, int from_tty) |
c906108c SS |
3013 | { |
3014 | struct target_ops *t; | |
3015 | ||
c5aa993b | 3016 | t = find_default_run_target ("attach"); |
136d6dae | 3017 | (t->to_attach) (t, args, from_tty); |
c906108c SS |
3018 | return; |
3019 | } | |
3020 | ||
c906108c | 3021 | void |
136d6dae VP |
3022 | find_default_create_inferior (struct target_ops *ops, |
3023 | char *exec_file, char *allargs, char **env, | |
c27cda74 | 3024 | int from_tty) |
c906108c SS |
3025 | { |
3026 | struct target_ops *t; | |
3027 | ||
c5aa993b | 3028 | t = find_default_run_target ("run"); |
136d6dae | 3029 | (t->to_create_inferior) (t, exec_file, allargs, env, from_tty); |
c906108c SS |
3030 | return; |
3031 | } | |
3032 | ||
2c0b251b | 3033 | static int |
b84876c2 PA |
3034 | find_default_can_async_p (void) |
3035 | { | |
3036 | struct target_ops *t; | |
3037 | ||
5f667f2d PA |
3038 | /* This may be called before the target is pushed on the stack; |
3039 | look for the default process stratum. If there's none, gdb isn't | |
3040 | configured with a native debugger, and target remote isn't | |
3041 | connected yet. */ | |
3042 | t = find_default_run_target (NULL); | |
3043 | if (t && t->to_can_async_p) | |
b84876c2 PA |
3044 | return (t->to_can_async_p) (); |
3045 | return 0; | |
3046 | } | |
3047 | ||
2c0b251b | 3048 | static int |
b84876c2 PA |
3049 | find_default_is_async_p (void) |
3050 | { | |
3051 | struct target_ops *t; | |
3052 | ||
5f667f2d PA |
3053 | /* This may be called before the target is pushed on the stack; |
3054 | look for the default process stratum. If there's none, gdb isn't | |
3055 | configured with a native debugger, and target remote isn't | |
3056 | connected yet. */ | |
3057 | t = find_default_run_target (NULL); | |
3058 | if (t && t->to_is_async_p) | |
b84876c2 PA |
3059 | return (t->to_is_async_p) (); |
3060 | return 0; | |
3061 | } | |
3062 | ||
2c0b251b | 3063 | static int |
9908b566 VP |
3064 | find_default_supports_non_stop (void) |
3065 | { | |
3066 | struct target_ops *t; | |
3067 | ||
3068 | t = find_default_run_target (NULL); | |
3069 | if (t && t->to_supports_non_stop) | |
3070 | return (t->to_supports_non_stop) (); | |
3071 | return 0; | |
3072 | } | |
3073 | ||
3074 | int | |
2c0b251b | 3075 | target_supports_non_stop (void) |
9908b566 VP |
3076 | { |
3077 | struct target_ops *t; | |
5d502164 | 3078 | |
9908b566 VP |
3079 | for (t = ¤t_target; t != NULL; t = t->beneath) |
3080 | if (t->to_supports_non_stop) | |
3081 | return t->to_supports_non_stop (); | |
3082 | ||
3083 | return 0; | |
3084 | } | |
3085 | ||
03583c20 UW |
3086 | static int |
3087 | find_default_supports_disable_randomization (void) | |
3088 | { | |
3089 | struct target_ops *t; | |
3090 | ||
3091 | t = find_default_run_target (NULL); | |
3092 | if (t && t->to_supports_disable_randomization) | |
3093 | return (t->to_supports_disable_randomization) (); | |
3094 | return 0; | |
3095 | } | |
3096 | ||
3097 | int | |
3098 | target_supports_disable_randomization (void) | |
3099 | { | |
3100 | struct target_ops *t; | |
3101 | ||
3102 | for (t = ¤t_target; t != NULL; t = t->beneath) | |
3103 | if (t->to_supports_disable_randomization) | |
3104 | return t->to_supports_disable_randomization (); | |
3105 | ||
3106 | return 0; | |
3107 | } | |
9908b566 | 3108 | |
07e059b5 VP |
3109 | char * |
3110 | target_get_osdata (const char *type) | |
3111 | { | |
07e059b5 VP |
3112 | struct target_ops *t; |
3113 | ||
739ef7fb PA |
3114 | /* If we're already connected to something that can get us OS |
3115 | related data, use it. Otherwise, try using the native | |
3116 | target. */ | |
3117 | if (current_target.to_stratum >= process_stratum) | |
6d097e65 | 3118 | t = current_target.beneath; |
739ef7fb PA |
3119 | else |
3120 | t = find_default_run_target ("get OS data"); | |
07e059b5 VP |
3121 | |
3122 | if (!t) | |
3123 | return NULL; | |
3124 | ||
6d097e65 | 3125 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
3126 | } |
3127 | ||
6c95b8df PA |
3128 | /* Determine the current address space of thread PTID. */ |
3129 | ||
3130 | struct address_space * | |
3131 | target_thread_address_space (ptid_t ptid) | |
3132 | { | |
c0694254 | 3133 | struct address_space *aspace; |
6c95b8df | 3134 | struct inferior *inf; |
c0694254 PA |
3135 | struct target_ops *t; |
3136 | ||
3137 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3138 | { | |
3139 | if (t->to_thread_address_space != NULL) | |
3140 | { | |
3141 | aspace = t->to_thread_address_space (t, ptid); | |
3142 | gdb_assert (aspace); | |
6c95b8df | 3143 | |
c0694254 PA |
3144 | if (targetdebug) |
3145 | fprintf_unfiltered (gdb_stdlog, | |
3146 | "target_thread_address_space (%s) = %d\n", | |
3147 | target_pid_to_str (ptid), | |
3148 | address_space_num (aspace)); | |
3149 | return aspace; | |
3150 | } | |
3151 | } | |
6c95b8df PA |
3152 | |
3153 | /* Fall-back to the "main" address space of the inferior. */ | |
3154 | inf = find_inferior_pid (ptid_get_pid (ptid)); | |
3155 | ||
3156 | if (inf == NULL || inf->aspace == NULL) | |
3e43a32a | 3157 | internal_error (__FILE__, __LINE__, |
9b20d036 MS |
3158 | _("Can't determine the current " |
3159 | "address space of thread %s\n"), | |
6c95b8df PA |
3160 | target_pid_to_str (ptid)); |
3161 | ||
3162 | return inf->aspace; | |
3163 | } | |
3164 | ||
e0d24f8d WZ |
3165 | static int |
3166 | default_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
3167 | { | |
ffe5a37e | 3168 | return (len <= gdbarch_ptr_bit (target_gdbarch) / TARGET_CHAR_BIT); |
ccaa32c7 GS |
3169 | } |
3170 | ||
5009afc5 AS |
3171 | static int |
3172 | default_watchpoint_addr_within_range (struct target_ops *target, | |
3173 | CORE_ADDR addr, | |
3174 | CORE_ADDR start, int length) | |
3175 | { | |
3176 | return addr >= start && addr < start + length; | |
3177 | } | |
3178 | ||
c2250ad1 UW |
3179 | static struct gdbarch * |
3180 | default_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
3181 | { | |
3182 | return target_gdbarch; | |
3183 | } | |
3184 | ||
c906108c | 3185 | static int |
fba45db2 | 3186 | return_zero (void) |
c906108c SS |
3187 | { |
3188 | return 0; | |
3189 | } | |
3190 | ||
3191 | static int | |
fba45db2 | 3192 | return_one (void) |
c906108c SS |
3193 | { |
3194 | return 1; | |
3195 | } | |
3196 | ||
ccaa32c7 GS |
3197 | static int |
3198 | return_minus_one (void) | |
3199 | { | |
3200 | return -1; | |
3201 | } | |
3202 | ||
7a292a7a SS |
3203 | /* Find a single runnable target in the stack and return it. If for |
3204 | some reason there is more than one, return NULL. */ | |
3205 | ||
3206 | struct target_ops * | |
fba45db2 | 3207 | find_run_target (void) |
7a292a7a SS |
3208 | { |
3209 | struct target_ops **t; | |
3210 | struct target_ops *runable = NULL; | |
3211 | int count; | |
c5aa993b | 3212 | |
7a292a7a | 3213 | count = 0; |
c5aa993b | 3214 | |
7a292a7a SS |
3215 | for (t = target_structs; t < target_structs + target_struct_size; ++t) |
3216 | { | |
c5aa993b | 3217 | if ((*t)->to_can_run && target_can_run (*t)) |
7a292a7a SS |
3218 | { |
3219 | runable = *t; | |
3220 | ++count; | |
3221 | } | |
3222 | } | |
c5aa993b | 3223 | |
7a292a7a SS |
3224 | return (count == 1 ? runable : NULL); |
3225 | } | |
3226 | ||
ed9a39eb JM |
3227 | /* |
3228 | * Find the next target down the stack from the specified target. | |
3229 | */ | |
3230 | ||
3231 | struct target_ops * | |
fba45db2 | 3232 | find_target_beneath (struct target_ops *t) |
ed9a39eb | 3233 | { |
258b763a | 3234 | return t->beneath; |
ed9a39eb JM |
3235 | } |
3236 | ||
c906108c SS |
3237 | \f |
3238 | /* The inferior process has died. Long live the inferior! */ | |
3239 | ||
3240 | void | |
fba45db2 | 3241 | generic_mourn_inferior (void) |
c906108c | 3242 | { |
7f9f62ba | 3243 | ptid_t ptid; |
c906108c | 3244 | |
7f9f62ba | 3245 | ptid = inferior_ptid; |
39f77062 | 3246 | inferior_ptid = null_ptid; |
7f9f62ba PA |
3247 | |
3248 | if (!ptid_equal (ptid, null_ptid)) | |
3249 | { | |
3250 | int pid = ptid_get_pid (ptid); | |
6c95b8df | 3251 | exit_inferior (pid); |
7f9f62ba PA |
3252 | } |
3253 | ||
c906108c SS |
3254 | breakpoint_init_inferior (inf_exited); |
3255 | registers_changed (); | |
3256 | ||
c906108c SS |
3257 | reopen_exec_file (); |
3258 | reinit_frame_cache (); | |
3259 | ||
9a4105ab AC |
3260 | if (deprecated_detach_hook) |
3261 | deprecated_detach_hook (); | |
c906108c SS |
3262 | } |
3263 | \f | |
8807d78b | 3264 | /* Helper function for child_wait and the derivatives of child_wait. |
c906108c SS |
3265 | HOSTSTATUS is the waitstatus from wait() or the equivalent; store our |
3266 | translation of that in OURSTATUS. */ | |
3267 | void | |
fba45db2 | 3268 | store_waitstatus (struct target_waitstatus *ourstatus, int hoststatus) |
c906108c | 3269 | { |
c906108c SS |
3270 | if (WIFEXITED (hoststatus)) |
3271 | { | |
3272 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
3273 | ourstatus->value.integer = WEXITSTATUS (hoststatus); | |
3274 | } | |
3275 | else if (!WIFSTOPPED (hoststatus)) | |
3276 | { | |
3277 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
3278 | ourstatus->value.sig = target_signal_from_host (WTERMSIG (hoststatus)); | |
3279 | } | |
3280 | else | |
3281 | { | |
3282 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
3283 | ourstatus->value.sig = target_signal_from_host (WSTOPSIG (hoststatus)); | |
3284 | } | |
3285 | } | |
3286 | \f | |
fd0a2a6f MK |
3287 | /* Convert a normal process ID to a string. Returns the string in a |
3288 | static buffer. */ | |
c906108c SS |
3289 | |
3290 | char * | |
39f77062 | 3291 | normal_pid_to_str (ptid_t ptid) |
c906108c | 3292 | { |
fd0a2a6f | 3293 | static char buf[32]; |
c906108c | 3294 | |
5fff8fc0 | 3295 | xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid)); |
c906108c SS |
3296 | return buf; |
3297 | } | |
3298 | ||
2c0b251b | 3299 | static char * |
117de6a9 PA |
3300 | dummy_pid_to_str (struct target_ops *ops, ptid_t ptid) |
3301 | { | |
3302 | return normal_pid_to_str (ptid); | |
3303 | } | |
3304 | ||
9b4eba8e HZ |
3305 | /* Error-catcher for target_find_memory_regions. */ |
3306 | static int | |
b8edc417 | 3307 | dummy_find_memory_regions (find_memory_region_ftype ignore1, void *ignore2) |
be4d1333 | 3308 | { |
9b4eba8e | 3309 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3310 | return 0; |
3311 | } | |
3312 | ||
9b4eba8e HZ |
3313 | /* Error-catcher for target_make_corefile_notes. */ |
3314 | static char * | |
3315 | dummy_make_corefile_notes (bfd *ignore1, int *ignore2) | |
be4d1333 | 3316 | { |
9b4eba8e | 3317 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3318 | return NULL; |
3319 | } | |
3320 | ||
6b04bdb7 MS |
3321 | /* Error-catcher for target_get_bookmark. */ |
3322 | static gdb_byte * | |
3323 | dummy_get_bookmark (char *ignore1, int ignore2) | |
3324 | { | |
3325 | tcomplain (); | |
3326 | return NULL; | |
3327 | } | |
3328 | ||
3329 | /* Error-catcher for target_goto_bookmark. */ | |
3330 | static void | |
3331 | dummy_goto_bookmark (gdb_byte *ignore, int from_tty) | |
3332 | { | |
3333 | tcomplain (); | |
3334 | } | |
3335 | ||
c906108c SS |
3336 | /* Set up the handful of non-empty slots needed by the dummy target |
3337 | vector. */ | |
3338 | ||
3339 | static void | |
fba45db2 | 3340 | init_dummy_target (void) |
c906108c SS |
3341 | { |
3342 | dummy_target.to_shortname = "None"; | |
3343 | dummy_target.to_longname = "None"; | |
3344 | dummy_target.to_doc = ""; | |
3345 | dummy_target.to_attach = find_default_attach; | |
136d6dae VP |
3346 | dummy_target.to_detach = |
3347 | (void (*)(struct target_ops *, char *, int))target_ignore; | |
c906108c | 3348 | dummy_target.to_create_inferior = find_default_create_inferior; |
b84876c2 PA |
3349 | dummy_target.to_can_async_p = find_default_can_async_p; |
3350 | dummy_target.to_is_async_p = find_default_is_async_p; | |
9908b566 | 3351 | dummy_target.to_supports_non_stop = find_default_supports_non_stop; |
03583c20 UW |
3352 | dummy_target.to_supports_disable_randomization |
3353 | = find_default_supports_disable_randomization; | |
117de6a9 | 3354 | dummy_target.to_pid_to_str = dummy_pid_to_str; |
c906108c | 3355 | dummy_target.to_stratum = dummy_stratum; |
be4d1333 MS |
3356 | dummy_target.to_find_memory_regions = dummy_find_memory_regions; |
3357 | dummy_target.to_make_corefile_notes = dummy_make_corefile_notes; | |
6b04bdb7 MS |
3358 | dummy_target.to_get_bookmark = dummy_get_bookmark; |
3359 | dummy_target.to_goto_bookmark = dummy_goto_bookmark; | |
0b603eba | 3360 | dummy_target.to_xfer_partial = default_xfer_partial; |
c35b1492 PA |
3361 | dummy_target.to_has_all_memory = (int (*) (struct target_ops *)) return_zero; |
3362 | dummy_target.to_has_memory = (int (*) (struct target_ops *)) return_zero; | |
3363 | dummy_target.to_has_stack = (int (*) (struct target_ops *)) return_zero; | |
3364 | dummy_target.to_has_registers = (int (*) (struct target_ops *)) return_zero; | |
aeaec162 TT |
3365 | dummy_target.to_has_execution |
3366 | = (int (*) (struct target_ops *, ptid_t)) return_zero; | |
7155de5a HZ |
3367 | dummy_target.to_stopped_by_watchpoint = return_zero; |
3368 | dummy_target.to_stopped_data_address = | |
3369 | (int (*) (struct target_ops *, CORE_ADDR *)) return_zero; | |
c906108c SS |
3370 | dummy_target.to_magic = OPS_MAGIC; |
3371 | } | |
c906108c | 3372 | \f |
c906108c | 3373 | static void |
fba45db2 | 3374 | debug_to_open (char *args, int from_tty) |
c906108c SS |
3375 | { |
3376 | debug_target.to_open (args, from_tty); | |
3377 | ||
96baa820 | 3378 | fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty); |
c906108c SS |
3379 | } |
3380 | ||
f1c07ab0 AC |
3381 | void |
3382 | target_close (struct target_ops *targ, int quitting) | |
3383 | { | |
3384 | if (targ->to_xclose != NULL) | |
3385 | targ->to_xclose (targ, quitting); | |
3386 | else if (targ->to_close != NULL) | |
3387 | targ->to_close (quitting); | |
947b8855 PA |
3388 | |
3389 | if (targetdebug) | |
3390 | fprintf_unfiltered (gdb_stdlog, "target_close (%d)\n", quitting); | |
f1c07ab0 AC |
3391 | } |
3392 | ||
136d6dae VP |
3393 | void |
3394 | target_attach (char *args, int from_tty) | |
3395 | { | |
3396 | struct target_ops *t; | |
5d502164 | 3397 | |
136d6dae VP |
3398 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3399 | { | |
3400 | if (t->to_attach != NULL) | |
3401 | { | |
3402 | t->to_attach (t, args, from_tty); | |
947b8855 PA |
3403 | if (targetdebug) |
3404 | fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n", | |
3405 | args, from_tty); | |
136d6dae VP |
3406 | return; |
3407 | } | |
3408 | } | |
3409 | ||
3410 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 3411 | _("could not find a target to attach")); |
136d6dae VP |
3412 | } |
3413 | ||
28439f5e PA |
3414 | int |
3415 | target_thread_alive (ptid_t ptid) | |
c906108c | 3416 | { |
28439f5e | 3417 | struct target_ops *t; |
5d502164 | 3418 | |
28439f5e PA |
3419 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3420 | { | |
3421 | if (t->to_thread_alive != NULL) | |
3422 | { | |
3423 | int retval; | |
c906108c | 3424 | |
28439f5e PA |
3425 | retval = t->to_thread_alive (t, ptid); |
3426 | if (targetdebug) | |
3427 | fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n", | |
3428 | PIDGET (ptid), retval); | |
3429 | ||
3430 | return retval; | |
3431 | } | |
3432 | } | |
3433 | ||
3434 | return 0; | |
3435 | } | |
3436 | ||
3437 | void | |
3438 | target_find_new_threads (void) | |
3439 | { | |
3440 | struct target_ops *t; | |
5d502164 | 3441 | |
28439f5e PA |
3442 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3443 | { | |
3444 | if (t->to_find_new_threads != NULL) | |
3445 | { | |
3446 | t->to_find_new_threads (t); | |
3447 | if (targetdebug) | |
3448 | fprintf_unfiltered (gdb_stdlog, "target_find_new_threads ()\n"); | |
3449 | ||
3450 | return; | |
3451 | } | |
3452 | } | |
c906108c SS |
3453 | } |
3454 | ||
d914c394 SS |
3455 | void |
3456 | target_stop (ptid_t ptid) | |
3457 | { | |
3458 | if (!may_stop) | |
3459 | { | |
3460 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3461 | return; | |
3462 | } | |
3463 | ||
3464 | (*current_target.to_stop) (ptid); | |
3465 | } | |
3466 | ||
c906108c | 3467 | static void |
28439f5e | 3468 | debug_to_post_attach (int pid) |
c906108c | 3469 | { |
28439f5e | 3470 | debug_target.to_post_attach (pid); |
c906108c | 3471 | |
28439f5e | 3472 | fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid); |
c906108c SS |
3473 | } |
3474 | ||
f00150c9 DE |
3475 | /* Return a pretty printed form of target_waitstatus. |
3476 | Space for the result is malloc'd, caller must free. */ | |
c906108c | 3477 | |
f00150c9 DE |
3478 | char * |
3479 | target_waitstatus_to_string (const struct target_waitstatus *ws) | |
3480 | { | |
3481 | const char *kind_str = "status->kind = "; | |
c906108c | 3482 | |
f00150c9 | 3483 | switch (ws->kind) |
c906108c SS |
3484 | { |
3485 | case TARGET_WAITKIND_EXITED: | |
f00150c9 DE |
3486 | return xstrprintf ("%sexited, status = %d", |
3487 | kind_str, ws->value.integer); | |
c906108c | 3488 | case TARGET_WAITKIND_STOPPED: |
f00150c9 DE |
3489 | return xstrprintf ("%sstopped, signal = %s", |
3490 | kind_str, target_signal_to_name (ws->value.sig)); | |
c906108c | 3491 | case TARGET_WAITKIND_SIGNALLED: |
f00150c9 DE |
3492 | return xstrprintf ("%ssignalled, signal = %s", |
3493 | kind_str, target_signal_to_name (ws->value.sig)); | |
c906108c | 3494 | case TARGET_WAITKIND_LOADED: |
f00150c9 | 3495 | return xstrprintf ("%sloaded", kind_str); |
c906108c | 3496 | case TARGET_WAITKIND_FORKED: |
f00150c9 | 3497 | return xstrprintf ("%sforked", kind_str); |
c906108c | 3498 | case TARGET_WAITKIND_VFORKED: |
f00150c9 | 3499 | return xstrprintf ("%svforked", kind_str); |
c906108c | 3500 | case TARGET_WAITKIND_EXECD: |
f00150c9 DE |
3501 | return xstrprintf ("%sexecd", kind_str); |
3502 | case TARGET_WAITKIND_SYSCALL_ENTRY: | |
a96d9b2e | 3503 | return xstrprintf ("%sentered syscall", kind_str); |
f00150c9 | 3504 | case TARGET_WAITKIND_SYSCALL_RETURN: |
a96d9b2e | 3505 | return xstrprintf ("%sexited syscall", kind_str); |
c906108c | 3506 | case TARGET_WAITKIND_SPURIOUS: |
f00150c9 DE |
3507 | return xstrprintf ("%sspurious", kind_str); |
3508 | case TARGET_WAITKIND_IGNORE: | |
3509 | return xstrprintf ("%signore", kind_str); | |
3510 | case TARGET_WAITKIND_NO_HISTORY: | |
3511 | return xstrprintf ("%sno-history", kind_str); | |
0c94aa73 PA |
3512 | case TARGET_WAITKIND_NO_RESUMED: |
3513 | return xstrprintf ("%sno-resumed", kind_str); | |
c906108c | 3514 | default: |
f00150c9 | 3515 | return xstrprintf ("%sunknown???", kind_str); |
c906108c | 3516 | } |
f00150c9 DE |
3517 | } |
3518 | ||
bf0c5130 | 3519 | static void |
56be3814 UW |
3520 | debug_print_register (const char * func, |
3521 | struct regcache *regcache, int regno) | |
bf0c5130 | 3522 | { |
f8d29908 | 3523 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
5d502164 | 3524 | |
bf0c5130 | 3525 | fprintf_unfiltered (gdb_stdlog, "%s ", func); |
f8d29908 | 3526 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) |
f8d29908 UW |
3527 | && gdbarch_register_name (gdbarch, regno) != NULL |
3528 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') | |
3529 | fprintf_unfiltered (gdb_stdlog, "(%s)", | |
3530 | gdbarch_register_name (gdbarch, regno)); | |
bf0c5130 AC |
3531 | else |
3532 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
0ff58721 | 3533 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) |
bf0c5130 | 3534 | { |
e17a4113 | 3535 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
f8d29908 | 3536 | int i, size = register_size (gdbarch, regno); |
d9d9c31f | 3537 | unsigned char buf[MAX_REGISTER_SIZE]; |
5d502164 | 3538 | |
0ff58721 | 3539 | regcache_raw_collect (regcache, regno, buf); |
bf0c5130 | 3540 | fprintf_unfiltered (gdb_stdlog, " = "); |
81c4a259 | 3541 | for (i = 0; i < size; i++) |
bf0c5130 AC |
3542 | { |
3543 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
3544 | } | |
81c4a259 | 3545 | if (size <= sizeof (LONGEST)) |
bf0c5130 | 3546 | { |
e17a4113 | 3547 | ULONGEST val = extract_unsigned_integer (buf, size, byte_order); |
5d502164 | 3548 | |
0b1553bc UW |
3549 | fprintf_unfiltered (gdb_stdlog, " %s %s", |
3550 | core_addr_to_string_nz (val), plongest (val)); | |
bf0c5130 AC |
3551 | } |
3552 | } | |
3553 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
3554 | } | |
3555 | ||
28439f5e PA |
3556 | void |
3557 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 3558 | { |
28439f5e | 3559 | struct target_ops *t; |
5d502164 | 3560 | |
28439f5e PA |
3561 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3562 | { | |
3563 | if (t->to_fetch_registers != NULL) | |
3564 | { | |
3565 | t->to_fetch_registers (t, regcache, regno); | |
3566 | if (targetdebug) | |
3567 | debug_print_register ("target_fetch_registers", regcache, regno); | |
3568 | return; | |
3569 | } | |
3570 | } | |
c906108c SS |
3571 | } |
3572 | ||
28439f5e PA |
3573 | void |
3574 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 3575 | { |
28439f5e | 3576 | struct target_ops *t; |
5d502164 | 3577 | |
d914c394 SS |
3578 | if (!may_write_registers) |
3579 | error (_("Writing to registers is not allowed (regno %d)"), regno); | |
3580 | ||
28439f5e PA |
3581 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3582 | { | |
3583 | if (t->to_store_registers != NULL) | |
3584 | { | |
3585 | t->to_store_registers (t, regcache, regno); | |
3586 | if (targetdebug) | |
3587 | { | |
3588 | debug_print_register ("target_store_registers", regcache, regno); | |
3589 | } | |
3590 | return; | |
3591 | } | |
3592 | } | |
3593 | ||
3594 | noprocess (); | |
c906108c SS |
3595 | } |
3596 | ||
dc146f7c VP |
3597 | int |
3598 | target_core_of_thread (ptid_t ptid) | |
3599 | { | |
3600 | struct target_ops *t; | |
3601 | ||
3602 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3603 | { | |
3604 | if (t->to_core_of_thread != NULL) | |
3605 | { | |
3606 | int retval = t->to_core_of_thread (t, ptid); | |
5d502164 | 3607 | |
dc146f7c | 3608 | if (targetdebug) |
3e43a32a MS |
3609 | fprintf_unfiltered (gdb_stdlog, |
3610 | "target_core_of_thread (%d) = %d\n", | |
dc146f7c VP |
3611 | PIDGET (ptid), retval); |
3612 | return retval; | |
3613 | } | |
3614 | } | |
3615 | ||
3616 | return -1; | |
3617 | } | |
3618 | ||
4a5e7a5b PA |
3619 | int |
3620 | target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3621 | { | |
3622 | struct target_ops *t; | |
3623 | ||
3624 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3625 | { | |
3626 | if (t->to_verify_memory != NULL) | |
3627 | { | |
3628 | int retval = t->to_verify_memory (t, data, memaddr, size); | |
5d502164 | 3629 | |
4a5e7a5b | 3630 | if (targetdebug) |
3e43a32a MS |
3631 | fprintf_unfiltered (gdb_stdlog, |
3632 | "target_verify_memory (%s, %s) = %d\n", | |
4a5e7a5b PA |
3633 | paddress (target_gdbarch, memaddr), |
3634 | pulongest (size), | |
3635 | retval); | |
3636 | return retval; | |
3637 | } | |
3638 | } | |
3639 | ||
3640 | tcomplain (); | |
3641 | } | |
3642 | ||
9c06b0b4 TJB |
3643 | /* The documentation for this function is in its prototype declaration in |
3644 | target.h. */ | |
3645 | ||
3646 | int | |
3647 | target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
3648 | { | |
3649 | struct target_ops *t; | |
3650 | ||
3651 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3652 | if (t->to_insert_mask_watchpoint != NULL) | |
3653 | { | |
3654 | int ret; | |
3655 | ||
3656 | ret = t->to_insert_mask_watchpoint (t, addr, mask, rw); | |
3657 | ||
3658 | if (targetdebug) | |
3659 | fprintf_unfiltered (gdb_stdlog, "\ | |
3660 | target_insert_mask_watchpoint (%s, %s, %d) = %d\n", | |
3661 | core_addr_to_string (addr), | |
3662 | core_addr_to_string (mask), rw, ret); | |
3663 | ||
3664 | return ret; | |
3665 | } | |
3666 | ||
3667 | return 1; | |
3668 | } | |
3669 | ||
3670 | /* The documentation for this function is in its prototype declaration in | |
3671 | target.h. */ | |
3672 | ||
3673 | int | |
3674 | target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
3675 | { | |
3676 | struct target_ops *t; | |
3677 | ||
3678 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3679 | if (t->to_remove_mask_watchpoint != NULL) | |
3680 | { | |
3681 | int ret; | |
3682 | ||
3683 | ret = t->to_remove_mask_watchpoint (t, addr, mask, rw); | |
3684 | ||
3685 | if (targetdebug) | |
3686 | fprintf_unfiltered (gdb_stdlog, "\ | |
3687 | target_remove_mask_watchpoint (%s, %s, %d) = %d\n", | |
3688 | core_addr_to_string (addr), | |
3689 | core_addr_to_string (mask), rw, ret); | |
3690 | ||
3691 | return ret; | |
3692 | } | |
3693 | ||
3694 | return 1; | |
3695 | } | |
3696 | ||
3697 | /* The documentation for this function is in its prototype declaration | |
3698 | in target.h. */ | |
3699 | ||
3700 | int | |
3701 | target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask) | |
3702 | { | |
3703 | struct target_ops *t; | |
3704 | ||
3705 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3706 | if (t->to_masked_watch_num_registers != NULL) | |
3707 | return t->to_masked_watch_num_registers (t, addr, mask); | |
3708 | ||
3709 | return -1; | |
3710 | } | |
3711 | ||
f1310107 TJB |
3712 | /* The documentation for this function is in its prototype declaration |
3713 | in target.h. */ | |
3714 | ||
3715 | int | |
3716 | target_ranged_break_num_registers (void) | |
3717 | { | |
3718 | struct target_ops *t; | |
3719 | ||
3720 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3721 | if (t->to_ranged_break_num_registers != NULL) | |
3722 | return t->to_ranged_break_num_registers (t); | |
3723 | ||
3724 | return -1; | |
3725 | } | |
3726 | ||
c906108c | 3727 | static void |
316f2060 | 3728 | debug_to_prepare_to_store (struct regcache *regcache) |
c906108c | 3729 | { |
316f2060 | 3730 | debug_target.to_prepare_to_store (regcache); |
c906108c | 3731 | |
96baa820 | 3732 | fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n"); |
c906108c SS |
3733 | } |
3734 | ||
3735 | static int | |
961cb7b5 | 3736 | deprecated_debug_xfer_memory (CORE_ADDR memaddr, bfd_byte *myaddr, int len, |
c8e73a31 AC |
3737 | int write, struct mem_attrib *attrib, |
3738 | struct target_ops *target) | |
c906108c SS |
3739 | { |
3740 | int retval; | |
3741 | ||
c8e73a31 AC |
3742 | retval = debug_target.deprecated_xfer_memory (memaddr, myaddr, len, write, |
3743 | attrib, target); | |
c906108c | 3744 | |
96baa820 | 3745 | fprintf_unfiltered (gdb_stdlog, |
53b71562 | 3746 | "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d", |
5af949e3 UW |
3747 | paddress (target_gdbarch, memaddr), len, |
3748 | write ? "write" : "read", retval); | |
c906108c | 3749 | |
c906108c SS |
3750 | if (retval > 0) |
3751 | { | |
3752 | int i; | |
3753 | ||
96baa820 | 3754 | fputs_unfiltered (", bytes =", gdb_stdlog); |
c906108c SS |
3755 | for (i = 0; i < retval; i++) |
3756 | { | |
53b71562 | 3757 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
333dabeb DJ |
3758 | { |
3759 | if (targetdebug < 2 && i > 0) | |
3760 | { | |
3761 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
3762 | break; | |
3763 | } | |
3764 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
3765 | } | |
2bc416ba | 3766 | |
96baa820 | 3767 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
c906108c SS |
3768 | } |
3769 | } | |
3770 | ||
96baa820 | 3771 | fputc_unfiltered ('\n', gdb_stdlog); |
c906108c SS |
3772 | |
3773 | return retval; | |
3774 | } | |
3775 | ||
3776 | static void | |
fba45db2 | 3777 | debug_to_files_info (struct target_ops *target) |
c906108c SS |
3778 | { |
3779 | debug_target.to_files_info (target); | |
3780 | ||
96baa820 | 3781 | fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n"); |
c906108c SS |
3782 | } |
3783 | ||
3784 | static int | |
a6d9a66e UW |
3785 | debug_to_insert_breakpoint (struct gdbarch *gdbarch, |
3786 | struct bp_target_info *bp_tgt) | |
c906108c SS |
3787 | { |
3788 | int retval; | |
3789 | ||
a6d9a66e | 3790 | retval = debug_target.to_insert_breakpoint (gdbarch, bp_tgt); |
c906108c | 3791 | |
96baa820 | 3792 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
3793 | "target_insert_breakpoint (%s, xxx) = %ld\n", |
3794 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 3795 | (unsigned long) retval); |
c906108c SS |
3796 | return retval; |
3797 | } | |
3798 | ||
3799 | static int | |
a6d9a66e UW |
3800 | debug_to_remove_breakpoint (struct gdbarch *gdbarch, |
3801 | struct bp_target_info *bp_tgt) | |
c906108c SS |
3802 | { |
3803 | int retval; | |
3804 | ||
a6d9a66e | 3805 | retval = debug_target.to_remove_breakpoint (gdbarch, bp_tgt); |
c906108c | 3806 | |
96baa820 | 3807 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
3808 | "target_remove_breakpoint (%s, xxx) = %ld\n", |
3809 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 3810 | (unsigned long) retval); |
c906108c SS |
3811 | return retval; |
3812 | } | |
3813 | ||
ccaa32c7 GS |
3814 | static int |
3815 | debug_to_can_use_hw_breakpoint (int type, int cnt, int from_tty) | |
3816 | { | |
3817 | int retval; | |
3818 | ||
3819 | retval = debug_target.to_can_use_hw_breakpoint (type, cnt, from_tty); | |
3820 | ||
3821 | fprintf_unfiltered (gdb_stdlog, | |
3822 | "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n", | |
3823 | (unsigned long) type, | |
3824 | (unsigned long) cnt, | |
3825 | (unsigned long) from_tty, | |
3826 | (unsigned long) retval); | |
3827 | return retval; | |
3828 | } | |
3829 | ||
e0d24f8d WZ |
3830 | static int |
3831 | debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
3832 | { | |
3833 | CORE_ADDR retval; | |
3834 | ||
3835 | retval = debug_target.to_region_ok_for_hw_watchpoint (addr, len); | |
3836 | ||
3837 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3838 | "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n", |
3839 | core_addr_to_string (addr), (unsigned long) len, | |
3840 | core_addr_to_string (retval)); | |
e0d24f8d WZ |
3841 | return retval; |
3842 | } | |
3843 | ||
0cf6dd15 TJB |
3844 | static int |
3845 | debug_to_can_accel_watchpoint_condition (CORE_ADDR addr, int len, int rw, | |
3846 | struct expression *cond) | |
3847 | { | |
3848 | int retval; | |
3849 | ||
3e43a32a MS |
3850 | retval = debug_target.to_can_accel_watchpoint_condition (addr, len, |
3851 | rw, cond); | |
0cf6dd15 TJB |
3852 | |
3853 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
3854 | "target_can_accel_watchpoint_condition " |
3855 | "(%s, %d, %d, %s) = %ld\n", | |
bd91e7ae OS |
3856 | core_addr_to_string (addr), len, rw, |
3857 | host_address_to_string (cond), (unsigned long) retval); | |
0cf6dd15 TJB |
3858 | return retval; |
3859 | } | |
3860 | ||
ccaa32c7 GS |
3861 | static int |
3862 | debug_to_stopped_by_watchpoint (void) | |
3863 | { | |
3864 | int retval; | |
3865 | ||
3866 | retval = debug_target.to_stopped_by_watchpoint (); | |
3867 | ||
3868 | fprintf_unfiltered (gdb_stdlog, | |
d92524f1 | 3869 | "target_stopped_by_watchpoint () = %ld\n", |
ccaa32c7 GS |
3870 | (unsigned long) retval); |
3871 | return retval; | |
3872 | } | |
3873 | ||
4aa7a7f5 JJ |
3874 | static int |
3875 | debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr) | |
ccaa32c7 | 3876 | { |
4aa7a7f5 | 3877 | int retval; |
ccaa32c7 | 3878 | |
4aa7a7f5 | 3879 | retval = debug_target.to_stopped_data_address (target, addr); |
ccaa32c7 GS |
3880 | |
3881 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3882 | "target_stopped_data_address ([%s]) = %ld\n", |
3883 | core_addr_to_string (*addr), | |
4aa7a7f5 | 3884 | (unsigned long)retval); |
ccaa32c7 GS |
3885 | return retval; |
3886 | } | |
3887 | ||
5009afc5 AS |
3888 | static int |
3889 | debug_to_watchpoint_addr_within_range (struct target_ops *target, | |
3890 | CORE_ADDR addr, | |
3891 | CORE_ADDR start, int length) | |
3892 | { | |
3893 | int retval; | |
3894 | ||
3895 | retval = debug_target.to_watchpoint_addr_within_range (target, addr, | |
3896 | start, length); | |
3897 | ||
3898 | fprintf_filtered (gdb_stdlog, | |
bd91e7ae OS |
3899 | "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n", |
3900 | core_addr_to_string (addr), core_addr_to_string (start), | |
3901 | length, retval); | |
5009afc5 AS |
3902 | return retval; |
3903 | } | |
3904 | ||
ccaa32c7 | 3905 | static int |
a6d9a66e UW |
3906 | debug_to_insert_hw_breakpoint (struct gdbarch *gdbarch, |
3907 | struct bp_target_info *bp_tgt) | |
ccaa32c7 GS |
3908 | { |
3909 | int retval; | |
3910 | ||
a6d9a66e | 3911 | retval = debug_target.to_insert_hw_breakpoint (gdbarch, bp_tgt); |
ccaa32c7 GS |
3912 | |
3913 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3914 | "target_insert_hw_breakpoint (%s, xxx) = %ld\n", |
3915 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
3916 | (unsigned long) retval); |
3917 | return retval; | |
3918 | } | |
3919 | ||
3920 | static int | |
a6d9a66e UW |
3921 | debug_to_remove_hw_breakpoint (struct gdbarch *gdbarch, |
3922 | struct bp_target_info *bp_tgt) | |
ccaa32c7 GS |
3923 | { |
3924 | int retval; | |
3925 | ||
a6d9a66e | 3926 | retval = debug_target.to_remove_hw_breakpoint (gdbarch, bp_tgt); |
ccaa32c7 GS |
3927 | |
3928 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3929 | "target_remove_hw_breakpoint (%s, xxx) = %ld\n", |
3930 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
3931 | (unsigned long) retval); |
3932 | return retval; | |
3933 | } | |
3934 | ||
3935 | static int | |
0cf6dd15 TJB |
3936 | debug_to_insert_watchpoint (CORE_ADDR addr, int len, int type, |
3937 | struct expression *cond) | |
ccaa32c7 GS |
3938 | { |
3939 | int retval; | |
3940 | ||
0cf6dd15 | 3941 | retval = debug_target.to_insert_watchpoint (addr, len, type, cond); |
ccaa32c7 GS |
3942 | |
3943 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3944 | "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n", |
3945 | core_addr_to_string (addr), len, type, | |
3946 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
3947 | return retval; |
3948 | } | |
3949 | ||
3950 | static int | |
0cf6dd15 TJB |
3951 | debug_to_remove_watchpoint (CORE_ADDR addr, int len, int type, |
3952 | struct expression *cond) | |
ccaa32c7 GS |
3953 | { |
3954 | int retval; | |
3955 | ||
0cf6dd15 | 3956 | retval = debug_target.to_remove_watchpoint (addr, len, type, cond); |
ccaa32c7 GS |
3957 | |
3958 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3959 | "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n", |
3960 | core_addr_to_string (addr), len, type, | |
3961 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
3962 | return retval; |
3963 | } | |
3964 | ||
c906108c | 3965 | static void |
fba45db2 | 3966 | debug_to_terminal_init (void) |
c906108c SS |
3967 | { |
3968 | debug_target.to_terminal_init (); | |
3969 | ||
96baa820 | 3970 | fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n"); |
c906108c SS |
3971 | } |
3972 | ||
3973 | static void | |
fba45db2 | 3974 | debug_to_terminal_inferior (void) |
c906108c SS |
3975 | { |
3976 | debug_target.to_terminal_inferior (); | |
3977 | ||
96baa820 | 3978 | fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n"); |
c906108c SS |
3979 | } |
3980 | ||
3981 | static void | |
fba45db2 | 3982 | debug_to_terminal_ours_for_output (void) |
c906108c SS |
3983 | { |
3984 | debug_target.to_terminal_ours_for_output (); | |
3985 | ||
96baa820 | 3986 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n"); |
c906108c SS |
3987 | } |
3988 | ||
3989 | static void | |
fba45db2 | 3990 | debug_to_terminal_ours (void) |
c906108c SS |
3991 | { |
3992 | debug_target.to_terminal_ours (); | |
3993 | ||
96baa820 | 3994 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n"); |
c906108c SS |
3995 | } |
3996 | ||
a790ad35 SC |
3997 | static void |
3998 | debug_to_terminal_save_ours (void) | |
3999 | { | |
4000 | debug_target.to_terminal_save_ours (); | |
4001 | ||
4002 | fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n"); | |
4003 | } | |
4004 | ||
c906108c | 4005 | static void |
fba45db2 | 4006 | debug_to_terminal_info (char *arg, int from_tty) |
c906108c SS |
4007 | { |
4008 | debug_target.to_terminal_info (arg, from_tty); | |
4009 | ||
96baa820 | 4010 | fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg, |
c906108c SS |
4011 | from_tty); |
4012 | } | |
4013 | ||
c906108c | 4014 | static void |
fba45db2 | 4015 | debug_to_load (char *args, int from_tty) |
c906108c SS |
4016 | { |
4017 | debug_target.to_load (args, from_tty); | |
4018 | ||
96baa820 | 4019 | fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty); |
c906108c SS |
4020 | } |
4021 | ||
c906108c | 4022 | static void |
39f77062 | 4023 | debug_to_post_startup_inferior (ptid_t ptid) |
c906108c | 4024 | { |
39f77062 | 4025 | debug_target.to_post_startup_inferior (ptid); |
c906108c | 4026 | |
96baa820 | 4027 | fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n", |
39f77062 | 4028 | PIDGET (ptid)); |
c906108c SS |
4029 | } |
4030 | ||
77b06cd7 | 4031 | static int |
fba45db2 | 4032 | debug_to_insert_fork_catchpoint (int pid) |
c906108c | 4033 | { |
77b06cd7 TJB |
4034 | int retval; |
4035 | ||
4036 | retval = debug_target.to_insert_fork_catchpoint (pid); | |
4037 | ||
4038 | fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d) = %d\n", | |
4039 | pid, retval); | |
c906108c | 4040 | |
77b06cd7 | 4041 | return retval; |
c906108c SS |
4042 | } |
4043 | ||
4044 | static int | |
fba45db2 | 4045 | debug_to_remove_fork_catchpoint (int pid) |
c906108c | 4046 | { |
c5aa993b | 4047 | int retval; |
c906108c SS |
4048 | |
4049 | retval = debug_target.to_remove_fork_catchpoint (pid); | |
4050 | ||
96baa820 | 4051 | fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n", |
c5aa993b | 4052 | pid, retval); |
c906108c SS |
4053 | |
4054 | return retval; | |
4055 | } | |
4056 | ||
77b06cd7 | 4057 | static int |
fba45db2 | 4058 | debug_to_insert_vfork_catchpoint (int pid) |
c906108c | 4059 | { |
77b06cd7 TJB |
4060 | int retval; |
4061 | ||
4062 | retval = debug_target.to_insert_vfork_catchpoint (pid); | |
c906108c | 4063 | |
77b06cd7 TJB |
4064 | fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d) = %d\n", |
4065 | pid, retval); | |
4066 | ||
4067 | return retval; | |
c906108c SS |
4068 | } |
4069 | ||
4070 | static int | |
fba45db2 | 4071 | debug_to_remove_vfork_catchpoint (int pid) |
c906108c | 4072 | { |
c5aa993b | 4073 | int retval; |
c906108c SS |
4074 | |
4075 | retval = debug_target.to_remove_vfork_catchpoint (pid); | |
4076 | ||
96baa820 | 4077 | fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n", |
c5aa993b | 4078 | pid, retval); |
c906108c SS |
4079 | |
4080 | return retval; | |
4081 | } | |
4082 | ||
77b06cd7 | 4083 | static int |
fba45db2 | 4084 | debug_to_insert_exec_catchpoint (int pid) |
c906108c | 4085 | { |
77b06cd7 TJB |
4086 | int retval; |
4087 | ||
4088 | retval = debug_target.to_insert_exec_catchpoint (pid); | |
c906108c | 4089 | |
77b06cd7 TJB |
4090 | fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d) = %d\n", |
4091 | pid, retval); | |
4092 | ||
4093 | return retval; | |
c906108c SS |
4094 | } |
4095 | ||
4096 | static int | |
fba45db2 | 4097 | debug_to_remove_exec_catchpoint (int pid) |
c906108c | 4098 | { |
c5aa993b | 4099 | int retval; |
c906108c SS |
4100 | |
4101 | retval = debug_target.to_remove_exec_catchpoint (pid); | |
4102 | ||
96baa820 | 4103 | fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n", |
c5aa993b | 4104 | pid, retval); |
c906108c SS |
4105 | |
4106 | return retval; | |
4107 | } | |
4108 | ||
c906108c | 4109 | static int |
fba45db2 | 4110 | debug_to_has_exited (int pid, int wait_status, int *exit_status) |
c906108c | 4111 | { |
c5aa993b | 4112 | int has_exited; |
c906108c SS |
4113 | |
4114 | has_exited = debug_target.to_has_exited (pid, wait_status, exit_status); | |
4115 | ||
96baa820 | 4116 | fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n", |
c5aa993b | 4117 | pid, wait_status, *exit_status, has_exited); |
c906108c SS |
4118 | |
4119 | return has_exited; | |
4120 | } | |
4121 | ||
c906108c | 4122 | static int |
fba45db2 | 4123 | debug_to_can_run (void) |
c906108c SS |
4124 | { |
4125 | int retval; | |
4126 | ||
4127 | retval = debug_target.to_can_run (); | |
4128 | ||
96baa820 | 4129 | fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval); |
c906108c SS |
4130 | |
4131 | return retval; | |
4132 | } | |
4133 | ||
c2250ad1 UW |
4134 | static struct gdbarch * |
4135 | debug_to_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
4136 | { | |
4137 | struct gdbarch *retval; | |
4138 | ||
4139 | retval = debug_target.to_thread_architecture (ops, ptid); | |
4140 | ||
3e43a32a MS |
4141 | fprintf_unfiltered (gdb_stdlog, |
4142 | "target_thread_architecture (%s) = %s [%s]\n", | |
4143 | target_pid_to_str (ptid), | |
4144 | host_address_to_string (retval), | |
c2250ad1 UW |
4145 | gdbarch_bfd_arch_info (retval)->printable_name); |
4146 | return retval; | |
4147 | } | |
4148 | ||
c906108c | 4149 | static void |
94cc34af | 4150 | debug_to_stop (ptid_t ptid) |
c906108c | 4151 | { |
94cc34af | 4152 | debug_target.to_stop (ptid); |
c906108c | 4153 | |
94cc34af PA |
4154 | fprintf_unfiltered (gdb_stdlog, "target_stop (%s)\n", |
4155 | target_pid_to_str (ptid)); | |
c906108c SS |
4156 | } |
4157 | ||
96baa820 JM |
4158 | static void |
4159 | debug_to_rcmd (char *command, | |
d9fcf2fb | 4160 | struct ui_file *outbuf) |
96baa820 JM |
4161 | { |
4162 | debug_target.to_rcmd (command, outbuf); | |
4163 | fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command); | |
4164 | } | |
4165 | ||
c906108c | 4166 | static char * |
fba45db2 | 4167 | debug_to_pid_to_exec_file (int pid) |
c906108c | 4168 | { |
c5aa993b | 4169 | char *exec_file; |
c906108c SS |
4170 | |
4171 | exec_file = debug_target.to_pid_to_exec_file (pid); | |
4172 | ||
96baa820 | 4173 | fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n", |
c5aa993b | 4174 | pid, exec_file); |
c906108c SS |
4175 | |
4176 | return exec_file; | |
4177 | } | |
4178 | ||
c906108c | 4179 | static void |
fba45db2 | 4180 | setup_target_debug (void) |
c906108c SS |
4181 | { |
4182 | memcpy (&debug_target, ¤t_target, sizeof debug_target); | |
4183 | ||
4184 | current_target.to_open = debug_to_open; | |
c906108c | 4185 | current_target.to_post_attach = debug_to_post_attach; |
c906108c | 4186 | current_target.to_prepare_to_store = debug_to_prepare_to_store; |
c8e73a31 | 4187 | current_target.deprecated_xfer_memory = deprecated_debug_xfer_memory; |
c906108c SS |
4188 | current_target.to_files_info = debug_to_files_info; |
4189 | current_target.to_insert_breakpoint = debug_to_insert_breakpoint; | |
4190 | current_target.to_remove_breakpoint = debug_to_remove_breakpoint; | |
ccaa32c7 GS |
4191 | current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint; |
4192 | current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint; | |
4193 | current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint; | |
4194 | current_target.to_insert_watchpoint = debug_to_insert_watchpoint; | |
4195 | current_target.to_remove_watchpoint = debug_to_remove_watchpoint; | |
4196 | current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint; | |
4197 | current_target.to_stopped_data_address = debug_to_stopped_data_address; | |
3e43a32a MS |
4198 | current_target.to_watchpoint_addr_within_range |
4199 | = debug_to_watchpoint_addr_within_range; | |
4200 | current_target.to_region_ok_for_hw_watchpoint | |
4201 | = debug_to_region_ok_for_hw_watchpoint; | |
4202 | current_target.to_can_accel_watchpoint_condition | |
4203 | = debug_to_can_accel_watchpoint_condition; | |
c906108c SS |
4204 | current_target.to_terminal_init = debug_to_terminal_init; |
4205 | current_target.to_terminal_inferior = debug_to_terminal_inferior; | |
3e43a32a MS |
4206 | current_target.to_terminal_ours_for_output |
4207 | = debug_to_terminal_ours_for_output; | |
c906108c | 4208 | current_target.to_terminal_ours = debug_to_terminal_ours; |
a790ad35 | 4209 | current_target.to_terminal_save_ours = debug_to_terminal_save_ours; |
c906108c | 4210 | current_target.to_terminal_info = debug_to_terminal_info; |
c906108c | 4211 | current_target.to_load = debug_to_load; |
c906108c | 4212 | current_target.to_post_startup_inferior = debug_to_post_startup_inferior; |
c906108c SS |
4213 | current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint; |
4214 | current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint; | |
4215 | current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint; | |
4216 | current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint; | |
c906108c SS |
4217 | current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint; |
4218 | current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint; | |
c906108c | 4219 | current_target.to_has_exited = debug_to_has_exited; |
c906108c | 4220 | current_target.to_can_run = debug_to_can_run; |
c906108c | 4221 | current_target.to_stop = debug_to_stop; |
96baa820 | 4222 | current_target.to_rcmd = debug_to_rcmd; |
c906108c | 4223 | current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file; |
c2250ad1 | 4224 | current_target.to_thread_architecture = debug_to_thread_architecture; |
c906108c | 4225 | } |
c906108c | 4226 | \f |
c5aa993b JM |
4227 | |
4228 | static char targ_desc[] = | |
3e43a32a MS |
4229 | "Names of targets and files being debugged.\nShows the entire \ |
4230 | stack of targets currently in use (including the exec-file,\n\ | |
c906108c SS |
4231 | core-file, and process, if any), as well as the symbol file name."; |
4232 | ||
96baa820 JM |
4233 | static void |
4234 | do_monitor_command (char *cmd, | |
4235 | int from_tty) | |
4236 | { | |
2b5fe715 AC |
4237 | if ((current_target.to_rcmd |
4238 | == (void (*) (char *, struct ui_file *)) tcomplain) | |
96baa820 | 4239 | || (current_target.to_rcmd == debug_to_rcmd |
2b5fe715 AC |
4240 | && (debug_target.to_rcmd |
4241 | == (void (*) (char *, struct ui_file *)) tcomplain))) | |
8a3fe4f8 | 4242 | error (_("\"monitor\" command not supported by this target.")); |
96baa820 JM |
4243 | target_rcmd (cmd, gdb_stdtarg); |
4244 | } | |
4245 | ||
87680a14 JB |
4246 | /* Print the name of each layers of our target stack. */ |
4247 | ||
4248 | static void | |
4249 | maintenance_print_target_stack (char *cmd, int from_tty) | |
4250 | { | |
4251 | struct target_ops *t; | |
4252 | ||
4253 | printf_filtered (_("The current target stack is:\n")); | |
4254 | ||
4255 | for (t = target_stack; t != NULL; t = t->beneath) | |
4256 | { | |
4257 | printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname); | |
4258 | } | |
4259 | } | |
4260 | ||
c6ebd6cf VP |
4261 | /* Controls if async mode is permitted. */ |
4262 | int target_async_permitted = 0; | |
4263 | ||
4264 | /* The set command writes to this variable. If the inferior is | |
4265 | executing, linux_nat_async_permitted is *not* updated. */ | |
4266 | static int target_async_permitted_1 = 0; | |
4267 | ||
4268 | static void | |
4269 | set_maintenance_target_async_permitted (char *args, int from_tty, | |
4270 | struct cmd_list_element *c) | |
4271 | { | |
c35b1492 | 4272 | if (have_live_inferiors ()) |
c6ebd6cf VP |
4273 | { |
4274 | target_async_permitted_1 = target_async_permitted; | |
4275 | error (_("Cannot change this setting while the inferior is running.")); | |
4276 | } | |
4277 | ||
4278 | target_async_permitted = target_async_permitted_1; | |
4279 | } | |
4280 | ||
4281 | static void | |
4282 | show_maintenance_target_async_permitted (struct ui_file *file, int from_tty, | |
4283 | struct cmd_list_element *c, | |
4284 | const char *value) | |
4285 | { | |
3e43a32a MS |
4286 | fprintf_filtered (file, |
4287 | _("Controlling the inferior in " | |
4288 | "asynchronous mode is %s.\n"), value); | |
c6ebd6cf VP |
4289 | } |
4290 | ||
d914c394 SS |
4291 | /* Temporary copies of permission settings. */ |
4292 | ||
4293 | static int may_write_registers_1 = 1; | |
4294 | static int may_write_memory_1 = 1; | |
4295 | static int may_insert_breakpoints_1 = 1; | |
4296 | static int may_insert_tracepoints_1 = 1; | |
4297 | static int may_insert_fast_tracepoints_1 = 1; | |
4298 | static int may_stop_1 = 1; | |
4299 | ||
4300 | /* Make the user-set values match the real values again. */ | |
4301 | ||
4302 | void | |
4303 | update_target_permissions (void) | |
4304 | { | |
4305 | may_write_registers_1 = may_write_registers; | |
4306 | may_write_memory_1 = may_write_memory; | |
4307 | may_insert_breakpoints_1 = may_insert_breakpoints; | |
4308 | may_insert_tracepoints_1 = may_insert_tracepoints; | |
4309 | may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints; | |
4310 | may_stop_1 = may_stop; | |
4311 | } | |
4312 | ||
4313 | /* The one function handles (most of) the permission flags in the same | |
4314 | way. */ | |
4315 | ||
4316 | static void | |
4317 | set_target_permissions (char *args, int from_tty, | |
4318 | struct cmd_list_element *c) | |
4319 | { | |
4320 | if (target_has_execution) | |
4321 | { | |
4322 | update_target_permissions (); | |
4323 | error (_("Cannot change this setting while the inferior is running.")); | |
4324 | } | |
4325 | ||
4326 | /* Make the real values match the user-changed values. */ | |
4327 | may_write_registers = may_write_registers_1; | |
4328 | may_insert_breakpoints = may_insert_breakpoints_1; | |
4329 | may_insert_tracepoints = may_insert_tracepoints_1; | |
4330 | may_insert_fast_tracepoints = may_insert_fast_tracepoints_1; | |
4331 | may_stop = may_stop_1; | |
4332 | update_observer_mode (); | |
4333 | } | |
4334 | ||
4335 | /* Set memory write permission independently of observer mode. */ | |
4336 | ||
4337 | static void | |
4338 | set_write_memory_permission (char *args, int from_tty, | |
4339 | struct cmd_list_element *c) | |
4340 | { | |
4341 | /* Make the real values match the user-changed values. */ | |
4342 | may_write_memory = may_write_memory_1; | |
4343 | update_observer_mode (); | |
4344 | } | |
4345 | ||
4346 | ||
c906108c | 4347 | void |
fba45db2 | 4348 | initialize_targets (void) |
c906108c SS |
4349 | { |
4350 | init_dummy_target (); | |
4351 | push_target (&dummy_target); | |
4352 | ||
4353 | add_info ("target", target_info, targ_desc); | |
4354 | add_info ("files", target_info, targ_desc); | |
4355 | ||
85c07804 AC |
4356 | add_setshow_zinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
4357 | Set target debugging."), _("\ | |
4358 | Show target debugging."), _("\ | |
333dabeb DJ |
4359 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
4360 | verbose. Changes do not take effect until the next \"run\" or \"target\"\n\ | |
85c07804 AC |
4361 | command."), |
4362 | NULL, | |
920d2a44 | 4363 | show_targetdebug, |
85c07804 | 4364 | &setdebuglist, &showdebuglist); |
3a11626d | 4365 | |
2bc416ba | 4366 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
4367 | &trust_readonly, _("\ |
4368 | Set mode for reading from readonly sections."), _("\ | |
4369 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
4370 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
4371 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 4372 | result in significant performance improvement for remote targets."), |
2c5b56ce | 4373 | NULL, |
920d2a44 | 4374 | show_trust_readonly, |
e707bbc2 | 4375 | &setlist, &showlist); |
96baa820 JM |
4376 | |
4377 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 4378 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 4379 | |
87680a14 JB |
4380 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
4381 | _("Print the name of each layer of the internal target stack."), | |
4382 | &maintenanceprintlist); | |
4383 | ||
c6ebd6cf VP |
4384 | add_setshow_boolean_cmd ("target-async", no_class, |
4385 | &target_async_permitted_1, _("\ | |
4386 | Set whether gdb controls the inferior in asynchronous mode."), _("\ | |
4387 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
4388 | Tells gdb whether to control the inferior in asynchronous mode."), | |
4389 | set_maintenance_target_async_permitted, | |
4390 | show_maintenance_target_async_permitted, | |
4391 | &setlist, | |
4392 | &showlist); | |
4393 | ||
4e5d721f | 4394 | add_setshow_boolean_cmd ("stack-cache", class_support, |
9cf1b572 | 4395 | &stack_cache_enabled_p_1, _("\ |
4e5d721f DE |
4396 | Set cache use for stack access."), _("\ |
4397 | Show cache use for stack access."), _("\ | |
4398 | When on, use the data cache for all stack access, regardless of any\n\ | |
4399 | configured memory regions. This improves remote performance significantly.\n\ | |
4400 | By default, caching for stack access is on."), | |
4401 | set_stack_cache_enabled_p, | |
4402 | show_stack_cache_enabled_p, | |
4403 | &setlist, &showlist); | |
4404 | ||
d914c394 SS |
4405 | add_setshow_boolean_cmd ("may-write-registers", class_support, |
4406 | &may_write_registers_1, _("\ | |
4407 | Set permission to write into registers."), _("\ | |
4408 | Show permission to write into registers."), _("\ | |
4409 | When this permission is on, GDB may write into the target's registers.\n\ | |
4410 | Otherwise, any sort of write attempt will result in an error."), | |
4411 | set_target_permissions, NULL, | |
4412 | &setlist, &showlist); | |
4413 | ||
4414 | add_setshow_boolean_cmd ("may-write-memory", class_support, | |
4415 | &may_write_memory_1, _("\ | |
4416 | Set permission to write into target memory."), _("\ | |
4417 | Show permission to write into target memory."), _("\ | |
4418 | When this permission is on, GDB may write into the target's memory.\n\ | |
4419 | Otherwise, any sort of write attempt will result in an error."), | |
4420 | set_write_memory_permission, NULL, | |
4421 | &setlist, &showlist); | |
4422 | ||
4423 | add_setshow_boolean_cmd ("may-insert-breakpoints", class_support, | |
4424 | &may_insert_breakpoints_1, _("\ | |
4425 | Set permission to insert breakpoints in the target."), _("\ | |
4426 | Show permission to insert breakpoints in the target."), _("\ | |
4427 | When this permission is on, GDB may insert breakpoints in the program.\n\ | |
4428 | Otherwise, any sort of insertion attempt will result in an error."), | |
4429 | set_target_permissions, NULL, | |
4430 | &setlist, &showlist); | |
4431 | ||
4432 | add_setshow_boolean_cmd ("may-insert-tracepoints", class_support, | |
4433 | &may_insert_tracepoints_1, _("\ | |
4434 | Set permission to insert tracepoints in the target."), _("\ | |
4435 | Show permission to insert tracepoints in the target."), _("\ | |
4436 | When this permission is on, GDB may insert tracepoints in the program.\n\ | |
4437 | Otherwise, any sort of insertion attempt will result in an error."), | |
4438 | set_target_permissions, NULL, | |
4439 | &setlist, &showlist); | |
4440 | ||
4441 | add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support, | |
4442 | &may_insert_fast_tracepoints_1, _("\ | |
4443 | Set permission to insert fast tracepoints in the target."), _("\ | |
4444 | Show permission to insert fast tracepoints in the target."), _("\ | |
4445 | When this permission is on, GDB may insert fast tracepoints.\n\ | |
4446 | Otherwise, any sort of insertion attempt will result in an error."), | |
4447 | set_target_permissions, NULL, | |
4448 | &setlist, &showlist); | |
4449 | ||
4450 | add_setshow_boolean_cmd ("may-interrupt", class_support, | |
4451 | &may_stop_1, _("\ | |
4452 | Set permission to interrupt or signal the target."), _("\ | |
4453 | Show permission to interrupt or signal the target."), _("\ | |
4454 | When this permission is on, GDB may interrupt/stop the target's execution.\n\ | |
4455 | Otherwise, any attempt to interrupt or stop will be ignored."), | |
4456 | set_target_permissions, NULL, | |
4457 | &setlist, &showlist); | |
4458 | ||
4459 | ||
8add0441 | 4460 | target_dcache = dcache_init (); |
c906108c | 4461 | } |