Commit | Line | Data |
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c906108c | 1 | /* Select target systems and architectures at runtime for GDB. |
7998dfc3 | 2 | |
6aba47ca | 3 | Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
7b6bb8da | 4 | 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
f6519ebc | 5 | Free Software Foundation, Inc. |
7998dfc3 | 6 | |
c906108c SS |
7 | Contributed by Cygnus Support. |
8 | ||
c5aa993b | 9 | This file is part of GDB. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is free software; you can redistribute it and/or modify |
12 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 13 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 14 | (at your option) any later version. |
c906108c | 15 | |
c5aa993b JM |
16 | This program is distributed in the hope that it will be useful, |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
c906108c | 20 | |
c5aa993b | 21 | You should have received a copy of the GNU General Public License |
a9762ec7 | 22 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
23 | |
24 | #include "defs.h" | |
25 | #include <errno.h> | |
c906108c SS |
26 | #include "gdb_string.h" |
27 | #include "target.h" | |
28 | #include "gdbcmd.h" | |
29 | #include "symtab.h" | |
30 | #include "inferior.h" | |
31 | #include "bfd.h" | |
32 | #include "symfile.h" | |
33 | #include "objfiles.h" | |
03f2053f | 34 | #include "gdb_wait.h" |
4930751a | 35 | #include "dcache.h" |
c906108c | 36 | #include <signal.h> |
4e052eda | 37 | #include "regcache.h" |
0088c768 | 38 | #include "gdb_assert.h" |
b6591e8b | 39 | #include "gdbcore.h" |
9e35dae4 | 40 | #include "exceptions.h" |
424163ea | 41 | #include "target-descriptions.h" |
e1ac3328 | 42 | #include "gdbthread.h" |
b9db4ced | 43 | #include "solib.h" |
07b82ea5 | 44 | #include "exec.h" |
edb3359d | 45 | #include "inline-frame.h" |
2f4d8875 | 46 | #include "tracepoint.h" |
c906108c | 47 | |
a14ed312 | 48 | static void target_info (char *, int); |
c906108c | 49 | |
a14ed312 | 50 | static void default_terminal_info (char *, int); |
c906108c | 51 | |
5009afc5 AS |
52 | static int default_watchpoint_addr_within_range (struct target_ops *, |
53 | CORE_ADDR, CORE_ADDR, int); | |
54 | ||
e0d24f8d WZ |
55 | static int default_region_ok_for_hw_watchpoint (CORE_ADDR, int); |
56 | ||
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); | |
685 | INHERIT (to_trace_stop, t); | |
686 | INHERIT (to_trace_find, t); | |
687 | INHERIT (to_get_trace_state_variable_value, t); | |
00bf0b85 SS |
688 | INHERIT (to_save_trace_data, t); |
689 | INHERIT (to_upload_tracepoints, t); | |
690 | INHERIT (to_upload_trace_state_variables, t); | |
691 | INHERIT (to_get_raw_trace_data, t); | |
35b1e5cc | 692 | INHERIT (to_set_disconnected_tracing, t); |
4daf5ac0 | 693 | INHERIT (to_set_circular_trace_buffer, t); |
711e434b | 694 | INHERIT (to_get_tib_address, t); |
d914c394 | 695 | INHERIT (to_set_permissions, t); |
0fb4aa4b PA |
696 | INHERIT (to_static_tracepoint_marker_at, t); |
697 | INHERIT (to_static_tracepoint_markers_by_strid, t); | |
b3b9301e | 698 | INHERIT (to_traceframe_info, t); |
7998dfc3 | 699 | INHERIT (to_magic, t); |
fd79ecee | 700 | /* Do not inherit to_memory_map. */ |
a76d924d DJ |
701 | /* Do not inherit to_flash_erase. */ |
702 | /* Do not inherit to_flash_done. */ | |
7998dfc3 AC |
703 | } |
704 | #undef INHERIT | |
705 | ||
706 | /* Clean up a target struct so it no longer has any zero pointers in | |
0088c768 AC |
707 | it. Some entries are defaulted to a method that print an error, |
708 | others are hard-wired to a standard recursive default. */ | |
c906108c SS |
709 | |
710 | #define de_fault(field, value) \ | |
7998dfc3 AC |
711 | if (!current_target.field) \ |
712 | current_target.field = value | |
0d06e24b | 713 | |
2bc416ba DJ |
714 | de_fault (to_open, |
715 | (void (*) (char *, int)) | |
0d06e24b | 716 | tcomplain); |
2bc416ba DJ |
717 | de_fault (to_close, |
718 | (void (*) (int)) | |
0d06e24b | 719 | target_ignore); |
2bc416ba DJ |
720 | de_fault (to_post_attach, |
721 | (void (*) (int)) | |
0d06e24b | 722 | target_ignore); |
2bc416ba | 723 | de_fault (to_prepare_to_store, |
316f2060 | 724 | (void (*) (struct regcache *)) |
0d06e24b | 725 | noprocess); |
2bc416ba | 726 | de_fault (deprecated_xfer_memory, |
3e43a32a MS |
727 | (int (*) (CORE_ADDR, gdb_byte *, int, int, |
728 | struct mem_attrib *, struct target_ops *)) | |
0d06e24b | 729 | nomemory); |
2bc416ba DJ |
730 | de_fault (to_files_info, |
731 | (void (*) (struct target_ops *)) | |
0d06e24b | 732 | target_ignore); |
2bc416ba | 733 | de_fault (to_insert_breakpoint, |
0d06e24b | 734 | memory_insert_breakpoint); |
2bc416ba | 735 | de_fault (to_remove_breakpoint, |
0d06e24b | 736 | memory_remove_breakpoint); |
ccaa32c7 GS |
737 | de_fault (to_can_use_hw_breakpoint, |
738 | (int (*) (int, int, int)) | |
739 | return_zero); | |
740 | de_fault (to_insert_hw_breakpoint, | |
a6d9a66e | 741 | (int (*) (struct gdbarch *, struct bp_target_info *)) |
ccaa32c7 GS |
742 | return_minus_one); |
743 | de_fault (to_remove_hw_breakpoint, | |
a6d9a66e | 744 | (int (*) (struct gdbarch *, struct bp_target_info *)) |
ccaa32c7 GS |
745 | return_minus_one); |
746 | de_fault (to_insert_watchpoint, | |
0cf6dd15 | 747 | (int (*) (CORE_ADDR, int, int, struct expression *)) |
ccaa32c7 GS |
748 | return_minus_one); |
749 | de_fault (to_remove_watchpoint, | |
0cf6dd15 | 750 | (int (*) (CORE_ADDR, int, int, struct expression *)) |
ccaa32c7 GS |
751 | return_minus_one); |
752 | de_fault (to_stopped_by_watchpoint, | |
753 | (int (*) (void)) | |
754 | return_zero); | |
755 | de_fault (to_stopped_data_address, | |
4aa7a7f5 | 756 | (int (*) (struct target_ops *, CORE_ADDR *)) |
ccaa32c7 | 757 | return_zero); |
5009afc5 AS |
758 | de_fault (to_watchpoint_addr_within_range, |
759 | default_watchpoint_addr_within_range); | |
e0d24f8d WZ |
760 | de_fault (to_region_ok_for_hw_watchpoint, |
761 | default_region_ok_for_hw_watchpoint); | |
0cf6dd15 TJB |
762 | de_fault (to_can_accel_watchpoint_condition, |
763 | (int (*) (CORE_ADDR, int, int, struct expression *)) | |
764 | return_zero); | |
2bc416ba DJ |
765 | de_fault (to_terminal_init, |
766 | (void (*) (void)) | |
0d06e24b | 767 | target_ignore); |
2bc416ba DJ |
768 | de_fault (to_terminal_inferior, |
769 | (void (*) (void)) | |
0d06e24b | 770 | target_ignore); |
2bc416ba DJ |
771 | de_fault (to_terminal_ours_for_output, |
772 | (void (*) (void)) | |
0d06e24b | 773 | target_ignore); |
2bc416ba DJ |
774 | de_fault (to_terminal_ours, |
775 | (void (*) (void)) | |
0d06e24b | 776 | target_ignore); |
2bc416ba DJ |
777 | de_fault (to_terminal_save_ours, |
778 | (void (*) (void)) | |
a790ad35 | 779 | target_ignore); |
2bc416ba | 780 | de_fault (to_terminal_info, |
0d06e24b | 781 | default_terminal_info); |
2bc416ba DJ |
782 | de_fault (to_load, |
783 | (void (*) (char *, int)) | |
0d06e24b | 784 | tcomplain); |
2bc416ba DJ |
785 | de_fault (to_post_startup_inferior, |
786 | (void (*) (ptid_t)) | |
0d06e24b | 787 | target_ignore); |
2bc416ba | 788 | de_fault (to_insert_fork_catchpoint, |
77b06cd7 TJB |
789 | (int (*) (int)) |
790 | return_one); | |
2bc416ba DJ |
791 | de_fault (to_remove_fork_catchpoint, |
792 | (int (*) (int)) | |
77b06cd7 | 793 | return_one); |
2bc416ba | 794 | de_fault (to_insert_vfork_catchpoint, |
77b06cd7 TJB |
795 | (int (*) (int)) |
796 | return_one); | |
2bc416ba DJ |
797 | de_fault (to_remove_vfork_catchpoint, |
798 | (int (*) (int)) | |
77b06cd7 | 799 | return_one); |
2bc416ba | 800 | de_fault (to_insert_exec_catchpoint, |
77b06cd7 TJB |
801 | (int (*) (int)) |
802 | return_one); | |
2bc416ba DJ |
803 | de_fault (to_remove_exec_catchpoint, |
804 | (int (*) (int)) | |
77b06cd7 | 805 | return_one); |
a96d9b2e SDJ |
806 | de_fault (to_set_syscall_catchpoint, |
807 | (int (*) (int, int, int, int, int *)) | |
77b06cd7 | 808 | return_one); |
2bc416ba DJ |
809 | de_fault (to_has_exited, |
810 | (int (*) (int, int, int *)) | |
0d06e24b | 811 | return_zero); |
2bc416ba | 812 | de_fault (to_can_run, |
0d06e24b | 813 | return_zero); |
2bc416ba DJ |
814 | de_fault (to_extra_thread_info, |
815 | (char *(*) (struct thread_info *)) | |
0d06e24b | 816 | return_zero); |
4694da01 TT |
817 | de_fault (to_thread_name, |
818 | (char *(*) (struct thread_info *)) | |
819 | return_zero); | |
2bc416ba | 820 | de_fault (to_stop, |
94cc34af | 821 | (void (*) (ptid_t)) |
0d06e24b | 822 | target_ignore); |
cf7a04e8 | 823 | current_target.to_xfer_partial = current_xfer_partial; |
2bc416ba DJ |
824 | de_fault (to_rcmd, |
825 | (void (*) (char *, struct ui_file *)) | |
0d06e24b | 826 | tcomplain); |
2bc416ba DJ |
827 | de_fault (to_pid_to_exec_file, |
828 | (char *(*) (int)) | |
0d06e24b | 829 | return_zero); |
2bc416ba DJ |
830 | de_fault (to_async, |
831 | (void (*) (void (*) (enum inferior_event_type, void*), void*)) | |
0d06e24b | 832 | tcomplain); |
c2250ad1 UW |
833 | de_fault (to_thread_architecture, |
834 | default_thread_architecture); | |
424163ea | 835 | current_target.to_read_description = NULL; |
0ef643c8 JB |
836 | de_fault (to_get_ada_task_ptid, |
837 | (ptid_t (*) (long, long)) | |
838 | default_get_ada_task_ptid); | |
8a305172 PA |
839 | de_fault (to_supports_multi_process, |
840 | (int (*) (void)) | |
841 | return_zero); | |
d248b706 KY |
842 | de_fault (to_supports_enable_disable_tracepoint, |
843 | (int (*) (void)) | |
844 | return_zero); | |
3065dfb6 SS |
845 | de_fault (to_supports_string_tracing, |
846 | (int (*) (void)) | |
847 | return_zero); | |
35b1e5cc SS |
848 | de_fault (to_trace_init, |
849 | (void (*) (void)) | |
850 | tcomplain); | |
851 | de_fault (to_download_tracepoint, | |
e8ba3115 | 852 | (void (*) (struct bp_location *)) |
35b1e5cc | 853 | tcomplain); |
1e4d1764 YQ |
854 | de_fault (to_can_download_tracepoint, |
855 | (int (*) (void)) | |
856 | return_zero); | |
35b1e5cc SS |
857 | de_fault (to_download_trace_state_variable, |
858 | (void (*) (struct trace_state_variable *)) | |
859 | tcomplain); | |
d248b706 KY |
860 | de_fault (to_enable_tracepoint, |
861 | (void (*) (struct bp_location *)) | |
862 | tcomplain); | |
863 | de_fault (to_disable_tracepoint, | |
864 | (void (*) (struct bp_location *)) | |
865 | tcomplain); | |
35b1e5cc SS |
866 | de_fault (to_trace_set_readonly_regions, |
867 | (void (*) (void)) | |
868 | tcomplain); | |
869 | de_fault (to_trace_start, | |
870 | (void (*) (void)) | |
871 | tcomplain); | |
872 | de_fault (to_get_trace_status, | |
00bf0b85 | 873 | (int (*) (struct trace_status *)) |
35b1e5cc SS |
874 | return_minus_one); |
875 | de_fault (to_trace_stop, | |
876 | (void (*) (void)) | |
877 | tcomplain); | |
878 | de_fault (to_trace_find, | |
879 | (int (*) (enum trace_find_type, int, ULONGEST, ULONGEST, int *)) | |
4136fdd2 | 880 | return_minus_one); |
35b1e5cc SS |
881 | de_fault (to_get_trace_state_variable_value, |
882 | (int (*) (int, LONGEST *)) | |
883 | return_zero); | |
00bf0b85 | 884 | de_fault (to_save_trace_data, |
011aacb0 | 885 | (int (*) (const char *)) |
00bf0b85 SS |
886 | tcomplain); |
887 | de_fault (to_upload_tracepoints, | |
888 | (int (*) (struct uploaded_tp **)) | |
889 | return_zero); | |
890 | de_fault (to_upload_trace_state_variables, | |
891 | (int (*) (struct uploaded_tsv **)) | |
892 | return_zero); | |
893 | de_fault (to_get_raw_trace_data, | |
894 | (LONGEST (*) (gdb_byte *, ULONGEST, LONGEST)) | |
895 | tcomplain); | |
35b1e5cc SS |
896 | de_fault (to_set_disconnected_tracing, |
897 | (void (*) (int)) | |
4daf5ac0 SS |
898 | target_ignore); |
899 | de_fault (to_set_circular_trace_buffer, | |
900 | (void (*) (int)) | |
901 | target_ignore); | |
711e434b PM |
902 | de_fault (to_get_tib_address, |
903 | (int (*) (ptid_t, CORE_ADDR *)) | |
904 | tcomplain); | |
d914c394 SS |
905 | de_fault (to_set_permissions, |
906 | (void (*) (void)) | |
907 | target_ignore); | |
0fb4aa4b PA |
908 | de_fault (to_static_tracepoint_marker_at, |
909 | (int (*) (CORE_ADDR, struct static_tracepoint_marker *)) | |
910 | return_zero); | |
911 | de_fault (to_static_tracepoint_markers_by_strid, | |
912 | (VEC(static_tracepoint_marker_p) * (*) (const char *)) | |
913 | tcomplain); | |
b3b9301e PA |
914 | de_fault (to_traceframe_info, |
915 | (struct traceframe_info * (*) (void)) | |
916 | tcomplain); | |
32231432 PA |
917 | de_fault (to_execution_direction, default_execution_direction); |
918 | ||
c906108c | 919 | #undef de_fault |
c906108c | 920 | |
7998dfc3 AC |
921 | /* Finally, position the target-stack beneath the squashed |
922 | "current_target". That way code looking for a non-inherited | |
923 | target method can quickly and simply find it. */ | |
924 | current_target.beneath = target_stack; | |
b4b61fdb DJ |
925 | |
926 | if (targetdebug) | |
927 | setup_target_debug (); | |
c906108c SS |
928 | } |
929 | ||
930 | /* Push a new target type into the stack of the existing target accessors, | |
931 | possibly superseding some of the existing accessors. | |
932 | ||
c906108c SS |
933 | Rather than allow an empty stack, we always have the dummy target at |
934 | the bottom stratum, so we can call the function vectors without | |
935 | checking them. */ | |
936 | ||
b26a4dcb | 937 | void |
fba45db2 | 938 | push_target (struct target_ops *t) |
c906108c | 939 | { |
258b763a | 940 | struct target_ops **cur; |
c906108c SS |
941 | |
942 | /* Check magic number. If wrong, it probably means someone changed | |
943 | the struct definition, but not all the places that initialize one. */ | |
944 | if (t->to_magic != OPS_MAGIC) | |
945 | { | |
c5aa993b JM |
946 | fprintf_unfiltered (gdb_stderr, |
947 | "Magic number of %s target struct wrong\n", | |
948 | t->to_shortname); | |
3e43a32a MS |
949 | internal_error (__FILE__, __LINE__, |
950 | _("failed internal consistency check")); | |
c906108c SS |
951 | } |
952 | ||
258b763a AC |
953 | /* Find the proper stratum to install this target in. */ |
954 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
c906108c | 955 | { |
258b763a | 956 | if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum) |
c906108c SS |
957 | break; |
958 | } | |
959 | ||
258b763a | 960 | /* If there's already targets at this stratum, remove them. */ |
88c231eb | 961 | /* FIXME: cagney/2003-10-15: I think this should be popping all |
258b763a AC |
962 | targets to CUR, and not just those at this stratum level. */ |
963 | while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum) | |
964 | { | |
965 | /* There's already something at this stratum level. Close it, | |
966 | and un-hook it from the stack. */ | |
967 | struct target_ops *tmp = (*cur); | |
5d502164 | 968 | |
258b763a AC |
969 | (*cur) = (*cur)->beneath; |
970 | tmp->beneath = NULL; | |
f1c07ab0 | 971 | target_close (tmp, 0); |
258b763a | 972 | } |
c906108c SS |
973 | |
974 | /* We have removed all targets in our stratum, now add the new one. */ | |
258b763a AC |
975 | t->beneath = (*cur); |
976 | (*cur) = t; | |
c906108c SS |
977 | |
978 | update_current_target (); | |
c906108c SS |
979 | } |
980 | ||
2bc416ba | 981 | /* Remove a target_ops vector from the stack, wherever it may be. |
c906108c SS |
982 | Return how many times it was removed (0 or 1). */ |
983 | ||
984 | int | |
fba45db2 | 985 | unpush_target (struct target_ops *t) |
c906108c | 986 | { |
258b763a AC |
987 | struct target_ops **cur; |
988 | struct target_ops *tmp; | |
c906108c | 989 | |
c8d104ad PA |
990 | if (t->to_stratum == dummy_stratum) |
991 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 992 | _("Attempt to unpush the dummy target")); |
c8d104ad | 993 | |
c906108c | 994 | /* Look for the specified target. Note that we assume that a target |
c378eb4e | 995 | can only occur once in the target stack. */ |
c906108c | 996 | |
258b763a AC |
997 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) |
998 | { | |
999 | if ((*cur) == t) | |
1000 | break; | |
1001 | } | |
c906108c | 1002 | |
258b763a | 1003 | if ((*cur) == NULL) |
c378eb4e | 1004 | return 0; /* Didn't find target_ops, quit now. */ |
c906108c | 1005 | |
5269965e AC |
1006 | /* NOTE: cagney/2003-12-06: In '94 the close call was made |
1007 | unconditional by moving it to before the above check that the | |
1008 | target was in the target stack (something about "Change the way | |
1009 | pushing and popping of targets work to support target overlays | |
1010 | and inheritance"). This doesn't make much sense - only open | |
1011 | targets should be closed. */ | |
1012 | target_close (t, 0); | |
1013 | ||
c378eb4e | 1014 | /* Unchain the target. */ |
258b763a AC |
1015 | tmp = (*cur); |
1016 | (*cur) = (*cur)->beneath; | |
1017 | tmp->beneath = NULL; | |
c906108c SS |
1018 | |
1019 | update_current_target (); | |
c906108c SS |
1020 | |
1021 | return 1; | |
1022 | } | |
1023 | ||
1024 | void | |
fba45db2 | 1025 | pop_target (void) |
c906108c | 1026 | { |
c378eb4e | 1027 | target_close (target_stack, 0); /* Let it clean up. */ |
258b763a | 1028 | if (unpush_target (target_stack) == 1) |
c906108c SS |
1029 | return; |
1030 | ||
c5aa993b JM |
1031 | fprintf_unfiltered (gdb_stderr, |
1032 | "pop_target couldn't find target %s\n", | |
1033 | current_target.to_shortname); | |
5d502164 MS |
1034 | internal_error (__FILE__, __LINE__, |
1035 | _("failed internal consistency check")); | |
c906108c SS |
1036 | } |
1037 | ||
aa76d38d | 1038 | void |
87ab71f0 | 1039 | pop_all_targets_above (enum strata above_stratum, int quitting) |
aa76d38d | 1040 | { |
87ab71f0 | 1041 | while ((int) (current_target.to_stratum) > (int) above_stratum) |
aa76d38d | 1042 | { |
b52323fa | 1043 | target_close (target_stack, quitting); |
aa76d38d PA |
1044 | if (!unpush_target (target_stack)) |
1045 | { | |
1046 | fprintf_unfiltered (gdb_stderr, | |
1047 | "pop_all_targets couldn't find target %s\n", | |
b52323fa | 1048 | target_stack->to_shortname); |
aa76d38d PA |
1049 | internal_error (__FILE__, __LINE__, |
1050 | _("failed internal consistency check")); | |
1051 | break; | |
1052 | } | |
1053 | } | |
1054 | } | |
1055 | ||
87ab71f0 PA |
1056 | void |
1057 | pop_all_targets (int quitting) | |
1058 | { | |
1059 | pop_all_targets_above (dummy_stratum, quitting); | |
1060 | } | |
1061 | ||
c0edd9ed JK |
1062 | /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */ |
1063 | ||
1064 | int | |
1065 | target_is_pushed (struct target_ops *t) | |
1066 | { | |
1067 | struct target_ops **cur; | |
1068 | ||
1069 | /* Check magic number. If wrong, it probably means someone changed | |
1070 | the struct definition, but not all the places that initialize one. */ | |
1071 | if (t->to_magic != OPS_MAGIC) | |
1072 | { | |
1073 | fprintf_unfiltered (gdb_stderr, | |
1074 | "Magic number of %s target struct wrong\n", | |
1075 | t->to_shortname); | |
3e43a32a MS |
1076 | internal_error (__FILE__, __LINE__, |
1077 | _("failed internal consistency check")); | |
c0edd9ed JK |
1078 | } |
1079 | ||
1080 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
1081 | if (*cur == t) | |
1082 | return 1; | |
1083 | ||
1084 | return 0; | |
1085 | } | |
1086 | ||
72f5cf0e | 1087 | /* Using the objfile specified in OBJFILE, find the address for the |
9e35dae4 DJ |
1088 | current thread's thread-local storage with offset OFFSET. */ |
1089 | CORE_ADDR | |
1090 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) | |
1091 | { | |
1092 | volatile CORE_ADDR addr = 0; | |
117de6a9 PA |
1093 | struct target_ops *target; |
1094 | ||
1095 | for (target = current_target.beneath; | |
1096 | target != NULL; | |
1097 | target = target->beneath) | |
1098 | { | |
1099 | if (target->to_get_thread_local_address != NULL) | |
1100 | break; | |
1101 | } | |
9e35dae4 | 1102 | |
117de6a9 | 1103 | if (target != NULL |
1cf3db46 | 1104 | && gdbarch_fetch_tls_load_module_address_p (target_gdbarch)) |
9e35dae4 DJ |
1105 | { |
1106 | ptid_t ptid = inferior_ptid; | |
1107 | volatile struct gdb_exception ex; | |
1108 | ||
1109 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
1110 | { | |
1111 | CORE_ADDR lm_addr; | |
1112 | ||
1113 | /* Fetch the load module address for this objfile. */ | |
1cf3db46 | 1114 | lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch, |
9e35dae4 DJ |
1115 | objfile); |
1116 | /* If it's 0, throw the appropriate exception. */ | |
1117 | if (lm_addr == 0) | |
1118 | throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR, | |
1119 | _("TLS load module not found")); | |
1120 | ||
3e43a32a MS |
1121 | addr = target->to_get_thread_local_address (target, ptid, |
1122 | lm_addr, offset); | |
9e35dae4 DJ |
1123 | } |
1124 | /* If an error occurred, print TLS related messages here. Otherwise, | |
1125 | throw the error to some higher catcher. */ | |
1126 | if (ex.reason < 0) | |
1127 | { | |
1128 | int objfile_is_library = (objfile->flags & OBJF_SHARED); | |
1129 | ||
1130 | switch (ex.error) | |
1131 | { | |
1132 | case TLS_NO_LIBRARY_SUPPORT_ERROR: | |
3e43a32a MS |
1133 | error (_("Cannot find thread-local variables " |
1134 | "in this thread library.")); | |
9e35dae4 DJ |
1135 | break; |
1136 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: | |
1137 | if (objfile_is_library) | |
1138 | error (_("Cannot find shared library `%s' in dynamic" | |
1139 | " linker's load module list"), objfile->name); | |
1140 | else | |
1141 | error (_("Cannot find executable file `%s' in dynamic" | |
1142 | " linker's load module list"), objfile->name); | |
1143 | break; | |
1144 | case TLS_NOT_ALLOCATED_YET_ERROR: | |
1145 | if (objfile_is_library) | |
1146 | error (_("The inferior has not yet allocated storage for" | |
1147 | " thread-local variables in\n" | |
1148 | "the shared library `%s'\n" | |
1149 | "for %s"), | |
1150 | objfile->name, target_pid_to_str (ptid)); | |
1151 | else | |
1152 | error (_("The inferior has not yet allocated storage for" | |
1153 | " thread-local variables in\n" | |
1154 | "the executable `%s'\n" | |
1155 | "for %s"), | |
1156 | objfile->name, target_pid_to_str (ptid)); | |
1157 | break; | |
1158 | case TLS_GENERIC_ERROR: | |
1159 | if (objfile_is_library) | |
1160 | error (_("Cannot find thread-local storage for %s, " | |
1161 | "shared library %s:\n%s"), | |
1162 | target_pid_to_str (ptid), | |
1163 | objfile->name, ex.message); | |
1164 | else | |
1165 | error (_("Cannot find thread-local storage for %s, " | |
1166 | "executable file %s:\n%s"), | |
1167 | target_pid_to_str (ptid), | |
1168 | objfile->name, ex.message); | |
1169 | break; | |
1170 | default: | |
1171 | throw_exception (ex); | |
1172 | break; | |
1173 | } | |
1174 | } | |
1175 | } | |
1176 | /* It wouldn't be wrong here to try a gdbarch method, too; finding | |
1177 | TLS is an ABI-specific thing. But we don't do that yet. */ | |
1178 | else | |
1179 | error (_("Cannot find thread-local variables on this target")); | |
1180 | ||
1181 | return addr; | |
1182 | } | |
1183 | ||
c906108c SS |
1184 | #undef MIN |
1185 | #define MIN(A, B) (((A) <= (B)) ? (A) : (B)) | |
1186 | ||
1187 | /* target_read_string -- read a null terminated string, up to LEN bytes, | |
1188 | from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful. | |
1189 | Set *STRING to a pointer to malloc'd memory containing the data; the caller | |
1190 | is responsible for freeing it. Return the number of bytes successfully | |
1191 | read. */ | |
1192 | ||
1193 | int | |
fba45db2 | 1194 | target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop) |
c906108c SS |
1195 | { |
1196 | int tlen, origlen, offset, i; | |
1b0ba102 | 1197 | gdb_byte buf[4]; |
c906108c SS |
1198 | int errcode = 0; |
1199 | char *buffer; | |
1200 | int buffer_allocated; | |
1201 | char *bufptr; | |
1202 | unsigned int nbytes_read = 0; | |
1203 | ||
6217bf3e MS |
1204 | gdb_assert (string); |
1205 | ||
c906108c SS |
1206 | /* Small for testing. */ |
1207 | buffer_allocated = 4; | |
1208 | buffer = xmalloc (buffer_allocated); | |
1209 | bufptr = buffer; | |
1210 | ||
1211 | origlen = len; | |
1212 | ||
1213 | while (len > 0) | |
1214 | { | |
1215 | tlen = MIN (len, 4 - (memaddr & 3)); | |
1216 | offset = memaddr & 3; | |
1217 | ||
1b0ba102 | 1218 | errcode = target_read_memory (memaddr & ~3, buf, sizeof buf); |
c906108c SS |
1219 | if (errcode != 0) |
1220 | { | |
1221 | /* The transfer request might have crossed the boundary to an | |
c378eb4e | 1222 | unallocated region of memory. Retry the transfer, requesting |
c906108c SS |
1223 | a single byte. */ |
1224 | tlen = 1; | |
1225 | offset = 0; | |
b8eb5af0 | 1226 | errcode = target_read_memory (memaddr, buf, 1); |
c906108c SS |
1227 | if (errcode != 0) |
1228 | goto done; | |
1229 | } | |
1230 | ||
1231 | if (bufptr - buffer + tlen > buffer_allocated) | |
1232 | { | |
1233 | unsigned int bytes; | |
5d502164 | 1234 | |
c906108c SS |
1235 | bytes = bufptr - buffer; |
1236 | buffer_allocated *= 2; | |
1237 | buffer = xrealloc (buffer, buffer_allocated); | |
1238 | bufptr = buffer + bytes; | |
1239 | } | |
1240 | ||
1241 | for (i = 0; i < tlen; i++) | |
1242 | { | |
1243 | *bufptr++ = buf[i + offset]; | |
1244 | if (buf[i + offset] == '\000') | |
1245 | { | |
1246 | nbytes_read += i + 1; | |
1247 | goto done; | |
1248 | } | |
1249 | } | |
1250 | ||
1251 | memaddr += tlen; | |
1252 | len -= tlen; | |
1253 | nbytes_read += tlen; | |
1254 | } | |
c5aa993b | 1255 | done: |
6217bf3e | 1256 | *string = buffer; |
c906108c SS |
1257 | if (errnop != NULL) |
1258 | *errnop = errcode; | |
c906108c SS |
1259 | return nbytes_read; |
1260 | } | |
1261 | ||
07b82ea5 PA |
1262 | struct target_section_table * |
1263 | target_get_section_table (struct target_ops *target) | |
1264 | { | |
1265 | struct target_ops *t; | |
1266 | ||
1267 | if (targetdebug) | |
1268 | fprintf_unfiltered (gdb_stdlog, "target_get_section_table ()\n"); | |
1269 | ||
1270 | for (t = target; t != NULL; t = t->beneath) | |
1271 | if (t->to_get_section_table != NULL) | |
1272 | return (*t->to_get_section_table) (t); | |
1273 | ||
1274 | return NULL; | |
1275 | } | |
1276 | ||
8db32d44 | 1277 | /* Find a section containing ADDR. */ |
07b82ea5 | 1278 | |
0542c86d | 1279 | struct target_section * |
8db32d44 AC |
1280 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
1281 | { | |
07b82ea5 | 1282 | struct target_section_table *table = target_get_section_table (target); |
0542c86d | 1283 | struct target_section *secp; |
07b82ea5 PA |
1284 | |
1285 | if (table == NULL) | |
1286 | return NULL; | |
1287 | ||
1288 | for (secp = table->sections; secp < table->sections_end; secp++) | |
8db32d44 AC |
1289 | { |
1290 | if (addr >= secp->addr && addr < secp->endaddr) | |
1291 | return secp; | |
1292 | } | |
1293 | return NULL; | |
1294 | } | |
1295 | ||
e6e4e701 PA |
1296 | /* Read memory from the live target, even if currently inspecting a |
1297 | traceframe. The return is the same as that of target_read. */ | |
1298 | ||
1299 | static LONGEST | |
1300 | target_read_live_memory (enum target_object object, | |
1301 | ULONGEST memaddr, gdb_byte *myaddr, LONGEST len) | |
1302 | { | |
1303 | int ret; | |
1304 | struct cleanup *cleanup; | |
1305 | ||
1306 | /* Switch momentarily out of tfind mode so to access live memory. | |
1307 | Note that this must not clear global state, such as the frame | |
1308 | cache, which must still remain valid for the previous traceframe. | |
1309 | We may be _building_ the frame cache at this point. */ | |
1310 | cleanup = make_cleanup_restore_traceframe_number (); | |
1311 | set_traceframe_number (-1); | |
1312 | ||
1313 | ret = target_read (current_target.beneath, object, NULL, | |
1314 | myaddr, memaddr, len); | |
1315 | ||
1316 | do_cleanups (cleanup); | |
1317 | return ret; | |
1318 | } | |
1319 | ||
1320 | /* Using the set of read-only target sections of OPS, read live | |
1321 | read-only memory. Note that the actual reads start from the | |
5657161f PA |
1322 | top-most target again. |
1323 | ||
1324 | For interface/parameters/return description see target.h, | |
1325 | to_xfer_partial. */ | |
e6e4e701 PA |
1326 | |
1327 | static LONGEST | |
1328 | memory_xfer_live_readonly_partial (struct target_ops *ops, | |
1329 | enum target_object object, | |
1330 | gdb_byte *readbuf, ULONGEST memaddr, | |
1331 | LONGEST len) | |
1332 | { | |
1333 | struct target_section *secp; | |
1334 | struct target_section_table *table; | |
1335 | ||
1336 | secp = target_section_by_addr (ops, memaddr); | |
1337 | if (secp != NULL | |
1338 | && (bfd_get_section_flags (secp->bfd, secp->the_bfd_section) | |
1339 | & SEC_READONLY)) | |
1340 | { | |
1341 | struct target_section *p; | |
1342 | ULONGEST memend = memaddr + len; | |
1343 | ||
1344 | table = target_get_section_table (ops); | |
1345 | ||
1346 | for (p = table->sections; p < table->sections_end; p++) | |
1347 | { | |
1348 | if (memaddr >= p->addr) | |
1349 | { | |
1350 | if (memend <= p->endaddr) | |
1351 | { | |
1352 | /* Entire transfer is within this section. */ | |
1353 | return target_read_live_memory (object, memaddr, | |
1354 | readbuf, len); | |
1355 | } | |
1356 | else if (memaddr >= p->endaddr) | |
1357 | { | |
1358 | /* This section ends before the transfer starts. */ | |
1359 | continue; | |
1360 | } | |
1361 | else | |
1362 | { | |
1363 | /* This section overlaps the transfer. Just do half. */ | |
1364 | len = p->endaddr - memaddr; | |
1365 | return target_read_live_memory (object, memaddr, | |
1366 | readbuf, len); | |
1367 | } | |
1368 | } | |
1369 | } | |
1370 | } | |
1371 | ||
1372 | return 0; | |
1373 | } | |
1374 | ||
7f79c47e DE |
1375 | /* Perform a partial memory transfer. |
1376 | For docs see target.h, to_xfer_partial. */ | |
cf7a04e8 DJ |
1377 | |
1378 | static LONGEST | |
4e5d721f DE |
1379 | memory_xfer_partial (struct target_ops *ops, enum target_object object, |
1380 | void *readbuf, const void *writebuf, ULONGEST memaddr, | |
1381 | LONGEST len) | |
0779438d | 1382 | { |
cf7a04e8 DJ |
1383 | LONGEST res; |
1384 | int reg_len; | |
1385 | struct mem_region *region; | |
4e5d721f | 1386 | struct inferior *inf; |
cf7a04e8 DJ |
1387 | |
1388 | /* Zero length requests are ok and require no work. */ | |
1389 | if (len == 0) | |
1390 | return 0; | |
1391 | ||
07b82ea5 PA |
1392 | /* For accesses to unmapped overlay sections, read directly from |
1393 | files. Must do this first, as MEMADDR may need adjustment. */ | |
1394 | if (readbuf != NULL && overlay_debugging) | |
1395 | { | |
1396 | struct obj_section *section = find_pc_overlay (memaddr); | |
5d502164 | 1397 | |
07b82ea5 PA |
1398 | if (pc_in_unmapped_range (memaddr, section)) |
1399 | { | |
1400 | struct target_section_table *table | |
1401 | = target_get_section_table (ops); | |
1402 | const char *section_name = section->the_bfd_section->name; | |
5d502164 | 1403 | |
07b82ea5 PA |
1404 | memaddr = overlay_mapped_address (memaddr, section); |
1405 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
1406 | memaddr, len, | |
1407 | table->sections, | |
1408 | table->sections_end, | |
1409 | section_name); | |
1410 | } | |
1411 | } | |
1412 | ||
1413 | /* Try the executable files, if "trust-readonly-sections" is set. */ | |
cf7a04e8 DJ |
1414 | if (readbuf != NULL && trust_readonly) |
1415 | { | |
0542c86d | 1416 | struct target_section *secp; |
07b82ea5 | 1417 | struct target_section_table *table; |
cf7a04e8 DJ |
1418 | |
1419 | secp = target_section_by_addr (ops, memaddr); | |
1420 | if (secp != NULL | |
1421 | && (bfd_get_section_flags (secp->bfd, secp->the_bfd_section) | |
1422 | & SEC_READONLY)) | |
07b82ea5 PA |
1423 | { |
1424 | table = target_get_section_table (ops); | |
1425 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
1426 | memaddr, len, | |
1427 | table->sections, | |
1428 | table->sections_end, | |
1429 | NULL); | |
1430 | } | |
98646950 UW |
1431 | } |
1432 | ||
e6e4e701 PA |
1433 | /* If reading unavailable memory in the context of traceframes, and |
1434 | this address falls within a read-only section, fallback to | |
1435 | reading from live memory. */ | |
1436 | if (readbuf != NULL && get_traceframe_number () != -1) | |
1437 | { | |
1438 | VEC(mem_range_s) *available; | |
1439 | ||
1440 | /* If we fail to get the set of available memory, then the | |
1441 | target does not support querying traceframe info, and so we | |
1442 | attempt reading from the traceframe anyway (assuming the | |
1443 | target implements the old QTro packet then). */ | |
1444 | if (traceframe_available_memory (&available, memaddr, len)) | |
1445 | { | |
1446 | struct cleanup *old_chain; | |
1447 | ||
1448 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available); | |
1449 | ||
1450 | if (VEC_empty (mem_range_s, available) | |
1451 | || VEC_index (mem_range_s, available, 0)->start != memaddr) | |
1452 | { | |
1453 | /* Don't read into the traceframe's available | |
1454 | memory. */ | |
1455 | if (!VEC_empty (mem_range_s, available)) | |
1456 | { | |
1457 | LONGEST oldlen = len; | |
1458 | ||
1459 | len = VEC_index (mem_range_s, available, 0)->start - memaddr; | |
1460 | gdb_assert (len <= oldlen); | |
1461 | } | |
1462 | ||
1463 | do_cleanups (old_chain); | |
1464 | ||
1465 | /* This goes through the topmost target again. */ | |
1466 | res = memory_xfer_live_readonly_partial (ops, object, | |
1467 | readbuf, memaddr, len); | |
1468 | if (res > 0) | |
1469 | return res; | |
1470 | ||
1471 | /* No use trying further, we know some memory starting | |
1472 | at MEMADDR isn't available. */ | |
1473 | return -1; | |
1474 | } | |
1475 | ||
1476 | /* Don't try to read more than how much is available, in | |
1477 | case the target implements the deprecated QTro packet to | |
1478 | cater for older GDBs (the target's knowledge of read-only | |
1479 | sections may be outdated by now). */ | |
1480 | len = VEC_index (mem_range_s, available, 0)->length; | |
1481 | ||
1482 | do_cleanups (old_chain); | |
1483 | } | |
1484 | } | |
1485 | ||
cf7a04e8 DJ |
1486 | /* Try GDB's internal data cache. */ |
1487 | region = lookup_mem_region (memaddr); | |
4b5752d0 VP |
1488 | /* region->hi == 0 means there's no upper bound. */ |
1489 | if (memaddr + len < region->hi || region->hi == 0) | |
cf7a04e8 DJ |
1490 | reg_len = len; |
1491 | else | |
1492 | reg_len = region->hi - memaddr; | |
1493 | ||
1494 | switch (region->attrib.mode) | |
1495 | { | |
1496 | case MEM_RO: | |
1497 | if (writebuf != NULL) | |
1498 | return -1; | |
1499 | break; | |
1500 | ||
1501 | case MEM_WO: | |
1502 | if (readbuf != NULL) | |
1503 | return -1; | |
1504 | break; | |
a76d924d DJ |
1505 | |
1506 | case MEM_FLASH: | |
1507 | /* We only support writing to flash during "load" for now. */ | |
1508 | if (writebuf != NULL) | |
1509 | error (_("Writing to flash memory forbidden in this context")); | |
1510 | break; | |
4b5752d0 VP |
1511 | |
1512 | case MEM_NONE: | |
1513 | return -1; | |
cf7a04e8 DJ |
1514 | } |
1515 | ||
6c95b8df PA |
1516 | if (!ptid_equal (inferior_ptid, null_ptid)) |
1517 | inf = find_inferior_pid (ptid_get_pid (inferior_ptid)); | |
1518 | else | |
1519 | inf = NULL; | |
4e5d721f DE |
1520 | |
1521 | if (inf != NULL | |
2f4d8875 PA |
1522 | /* The dcache reads whole cache lines; that doesn't play well |
1523 | with reading from a trace buffer, because reading outside of | |
1524 | the collected memory range fails. */ | |
1525 | && get_traceframe_number () == -1 | |
4e5d721f DE |
1526 | && (region->attrib.cache |
1527 | || (stack_cache_enabled_p && object == TARGET_OBJECT_STACK_MEMORY))) | |
cf7a04e8 | 1528 | { |
cf7a04e8 | 1529 | if (readbuf != NULL) |
25f122dc | 1530 | res = dcache_xfer_memory (ops, target_dcache, memaddr, readbuf, |
cf7a04e8 DJ |
1531 | reg_len, 0); |
1532 | else | |
1533 | /* FIXME drow/2006-08-09: If we're going to preserve const | |
1534 | correctness dcache_xfer_memory should take readbuf and | |
1535 | writebuf. */ | |
25f122dc | 1536 | res = dcache_xfer_memory (ops, target_dcache, memaddr, |
cf7a04e8 DJ |
1537 | (void *) writebuf, |
1538 | reg_len, 1); | |
1539 | if (res <= 0) | |
1540 | return -1; | |
1541 | else | |
8defab1a DJ |
1542 | { |
1543 | if (readbuf && !show_memory_breakpoints) | |
1544 | breakpoint_restore_shadows (readbuf, memaddr, reg_len); | |
1545 | return res; | |
1546 | } | |
cf7a04e8 DJ |
1547 | } |
1548 | ||
1549 | /* If none of those methods found the memory we wanted, fall back | |
1550 | to a target partial transfer. Normally a single call to | |
1551 | to_xfer_partial is enough; if it doesn't recognize an object | |
1552 | it will call the to_xfer_partial of the next target down. | |
1553 | But for memory this won't do. Memory is the only target | |
1554 | object which can be read from more than one valid target. | |
1555 | A core file, for instance, could have some of memory but | |
1556 | delegate other bits to the target below it. So, we must | |
1557 | manually try all targets. */ | |
1558 | ||
1559 | do | |
1560 | { | |
1561 | res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
4b5752d0 | 1562 | readbuf, writebuf, memaddr, reg_len); |
cf7a04e8 | 1563 | if (res > 0) |
8defab1a | 1564 | break; |
cf7a04e8 | 1565 | |
5ad3a4ca DJ |
1566 | /* We want to continue past core files to executables, but not |
1567 | past a running target's memory. */ | |
c35b1492 | 1568 | if (ops->to_has_all_memory (ops)) |
8defab1a | 1569 | break; |
5ad3a4ca | 1570 | |
cf7a04e8 DJ |
1571 | ops = ops->beneath; |
1572 | } | |
1573 | while (ops != NULL); | |
1574 | ||
e8c9e0a1 | 1575 | if (res > 0 && readbuf != NULL && !show_memory_breakpoints) |
8defab1a DJ |
1576 | breakpoint_restore_shadows (readbuf, memaddr, reg_len); |
1577 | ||
41dcd03f DE |
1578 | /* Make sure the cache gets updated no matter what - if we are writing |
1579 | to the stack. Even if this write is not tagged as such, we still need | |
1580 | to update the cache. */ | |
1581 | ||
1582 | if (res > 0 | |
1583 | && inf != NULL | |
1584 | && writebuf != NULL | |
1585 | && !region->attrib.cache | |
1586 | && stack_cache_enabled_p | |
1587 | && object != TARGET_OBJECT_STACK_MEMORY) | |
1588 | { | |
7d4f32d3 | 1589 | dcache_update (target_dcache, memaddr, (void *) writebuf, res); |
41dcd03f DE |
1590 | } |
1591 | ||
cf7a04e8 DJ |
1592 | /* If we still haven't got anything, return the last error. We |
1593 | give up. */ | |
1594 | return res; | |
0779438d AC |
1595 | } |
1596 | ||
8defab1a DJ |
1597 | static void |
1598 | restore_show_memory_breakpoints (void *arg) | |
1599 | { | |
1600 | show_memory_breakpoints = (uintptr_t) arg; | |
1601 | } | |
1602 | ||
1603 | struct cleanup * | |
1604 | make_show_memory_breakpoints_cleanup (int show) | |
1605 | { | |
1606 | int current = show_memory_breakpoints; | |
8defab1a | 1607 | |
5d502164 | 1608 | show_memory_breakpoints = show; |
8defab1a DJ |
1609 | return make_cleanup (restore_show_memory_breakpoints, |
1610 | (void *) (uintptr_t) current); | |
1611 | } | |
1612 | ||
7f79c47e DE |
1613 | /* For docs see target.h, to_xfer_partial. */ |
1614 | ||
27394598 AC |
1615 | static LONGEST |
1616 | target_xfer_partial (struct target_ops *ops, | |
1617 | enum target_object object, const char *annex, | |
1618 | void *readbuf, const void *writebuf, | |
1619 | ULONGEST offset, LONGEST len) | |
1620 | { | |
1621 | LONGEST retval; | |
1622 | ||
1623 | gdb_assert (ops->to_xfer_partial != NULL); | |
cf7a04e8 | 1624 | |
d914c394 SS |
1625 | if (writebuf && !may_write_memory) |
1626 | error (_("Writing to memory is not allowed (addr %s, len %s)"), | |
1627 | core_addr_to_string_nz (offset), plongest (len)); | |
1628 | ||
cf7a04e8 DJ |
1629 | /* If this is a memory transfer, let the memory-specific code |
1630 | have a look at it instead. Memory transfers are more | |
1631 | complicated. */ | |
4e5d721f DE |
1632 | if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY) |
1633 | retval = memory_xfer_partial (ops, object, readbuf, | |
1634 | writebuf, offset, len); | |
cf7a04e8 DJ |
1635 | else |
1636 | { | |
1637 | enum target_object raw_object = object; | |
1638 | ||
1639 | /* If this is a raw memory transfer, request the normal | |
1640 | memory object from other layers. */ | |
1641 | if (raw_object == TARGET_OBJECT_RAW_MEMORY) | |
1642 | raw_object = TARGET_OBJECT_MEMORY; | |
1643 | ||
1644 | retval = ops->to_xfer_partial (ops, raw_object, annex, readbuf, | |
1645 | writebuf, offset, len); | |
1646 | } | |
1647 | ||
27394598 AC |
1648 | if (targetdebug) |
1649 | { | |
1650 | const unsigned char *myaddr = NULL; | |
1651 | ||
1652 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
1653 | "%s:target_xfer_partial " |
1654 | "(%d, %s, %s, %s, %s, %s) = %s", | |
27394598 AC |
1655 | ops->to_shortname, |
1656 | (int) object, | |
1657 | (annex ? annex : "(null)"), | |
53b71562 JB |
1658 | host_address_to_string (readbuf), |
1659 | host_address_to_string (writebuf), | |
0b1553bc UW |
1660 | core_addr_to_string_nz (offset), |
1661 | plongest (len), plongest (retval)); | |
27394598 AC |
1662 | |
1663 | if (readbuf) | |
1664 | myaddr = readbuf; | |
1665 | if (writebuf) | |
1666 | myaddr = writebuf; | |
1667 | if (retval > 0 && myaddr != NULL) | |
1668 | { | |
1669 | int i; | |
2bc416ba | 1670 | |
27394598 AC |
1671 | fputs_unfiltered (", bytes =", gdb_stdlog); |
1672 | for (i = 0; i < retval; i++) | |
1673 | { | |
53b71562 | 1674 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1675 | { |
1676 | if (targetdebug < 2 && i > 0) | |
1677 | { | |
1678 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
1679 | break; | |
1680 | } | |
1681 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1682 | } | |
2bc416ba | 1683 | |
27394598 AC |
1684 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
1685 | } | |
1686 | } | |
2bc416ba | 1687 | |
27394598 AC |
1688 | fputc_unfiltered ('\n', gdb_stdlog); |
1689 | } | |
1690 | return retval; | |
1691 | } | |
1692 | ||
c906108c SS |
1693 | /* Read LEN bytes of target memory at address MEMADDR, placing the results in |
1694 | GDB's memory at MYADDR. Returns either 0 for success or an errno value | |
1695 | if any error occurs. | |
1696 | ||
1697 | If an error occurs, no guarantee is made about the contents of the data at | |
1698 | MYADDR. In particular, the caller should not depend upon partial reads | |
1699 | filling the buffer with good data. There is no way for the caller to know | |
1700 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 | 1701 | deal with partial reads should call target_read (which will retry until |
c378eb4e | 1702 | it makes no progress, and then return how much was transferred). */ |
c906108c SS |
1703 | |
1704 | int | |
fc1a4b47 | 1705 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 1706 | { |
c35b1492 PA |
1707 | /* Dispatch to the topmost target, not the flattened current_target. |
1708 | Memory accesses check target->to_has_(all_)memory, and the | |
1709 | flattened target doesn't inherit those. */ | |
1710 | if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1711 | myaddr, memaddr, len) == len) |
1712 | return 0; | |
0779438d | 1713 | else |
cf7a04e8 | 1714 | return EIO; |
c906108c SS |
1715 | } |
1716 | ||
4e5d721f DE |
1717 | /* Like target_read_memory, but specify explicitly that this is a read from |
1718 | the target's stack. This may trigger different cache behavior. */ | |
1719 | ||
1720 | int | |
1721 | target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, int len) | |
1722 | { | |
1723 | /* Dispatch to the topmost target, not the flattened current_target. | |
1724 | Memory accesses check target->to_has_(all_)memory, and the | |
1725 | flattened target doesn't inherit those. */ | |
1726 | ||
1727 | if (target_read (current_target.beneath, TARGET_OBJECT_STACK_MEMORY, NULL, | |
1728 | myaddr, memaddr, len) == len) | |
1729 | return 0; | |
1730 | else | |
1731 | return EIO; | |
1732 | } | |
1733 | ||
7f79c47e DE |
1734 | /* Write LEN bytes from MYADDR to target memory at address MEMADDR. |
1735 | Returns either 0 for success or an errno value if any error occurs. | |
1736 | If an error occurs, no guarantee is made about how much data got written. | |
1737 | Callers that can deal with partial writes should call target_write. */ | |
1738 | ||
c906108c | 1739 | int |
fc1a4b47 | 1740 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) |
c906108c | 1741 | { |
c35b1492 PA |
1742 | /* Dispatch to the topmost target, not the flattened current_target. |
1743 | Memory accesses check target->to_has_(all_)memory, and the | |
1744 | flattened target doesn't inherit those. */ | |
1745 | if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1746 | myaddr, memaddr, len) == len) |
1747 | return 0; | |
0779438d | 1748 | else |
cf7a04e8 | 1749 | return EIO; |
c906108c | 1750 | } |
c5aa993b | 1751 | |
fd79ecee DJ |
1752 | /* Fetch the target's memory map. */ |
1753 | ||
1754 | VEC(mem_region_s) * | |
1755 | target_memory_map (void) | |
1756 | { | |
1757 | VEC(mem_region_s) *result; | |
1758 | struct mem_region *last_one, *this_one; | |
1759 | int ix; | |
1760 | struct target_ops *t; | |
1761 | ||
1762 | if (targetdebug) | |
1763 | fprintf_unfiltered (gdb_stdlog, "target_memory_map ()\n"); | |
1764 | ||
1765 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1766 | if (t->to_memory_map != NULL) | |
1767 | break; | |
1768 | ||
1769 | if (t == NULL) | |
1770 | return NULL; | |
1771 | ||
1772 | result = t->to_memory_map (t); | |
1773 | if (result == NULL) | |
1774 | return NULL; | |
1775 | ||
1776 | qsort (VEC_address (mem_region_s, result), | |
1777 | VEC_length (mem_region_s, result), | |
1778 | sizeof (struct mem_region), mem_region_cmp); | |
1779 | ||
1780 | /* Check that regions do not overlap. Simultaneously assign | |
1781 | a numbering for the "mem" commands to use to refer to | |
1782 | each region. */ | |
1783 | last_one = NULL; | |
1784 | for (ix = 0; VEC_iterate (mem_region_s, result, ix, this_one); ix++) | |
1785 | { | |
1786 | this_one->number = ix; | |
1787 | ||
1788 | if (last_one && last_one->hi > this_one->lo) | |
1789 | { | |
1790 | warning (_("Overlapping regions in memory map: ignoring")); | |
1791 | VEC_free (mem_region_s, result); | |
1792 | return NULL; | |
1793 | } | |
1794 | last_one = this_one; | |
1795 | } | |
1796 | ||
1797 | return result; | |
1798 | } | |
1799 | ||
a76d924d DJ |
1800 | void |
1801 | target_flash_erase (ULONGEST address, LONGEST length) | |
1802 | { | |
1803 | struct target_ops *t; | |
1804 | ||
1805 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1806 | if (t->to_flash_erase != NULL) | |
5d502164 MS |
1807 | { |
1808 | if (targetdebug) | |
1809 | fprintf_unfiltered (gdb_stdlog, "target_flash_erase (%s, %s)\n", | |
1810 | hex_string (address), phex (length, 0)); | |
1811 | t->to_flash_erase (t, address, length); | |
1812 | return; | |
1813 | } | |
a76d924d DJ |
1814 | |
1815 | tcomplain (); | |
1816 | } | |
1817 | ||
1818 | void | |
1819 | target_flash_done (void) | |
1820 | { | |
1821 | struct target_ops *t; | |
1822 | ||
1823 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1824 | if (t->to_flash_done != NULL) | |
5d502164 MS |
1825 | { |
1826 | if (targetdebug) | |
1827 | fprintf_unfiltered (gdb_stdlog, "target_flash_done\n"); | |
1828 | t->to_flash_done (t); | |
1829 | return; | |
1830 | } | |
a76d924d DJ |
1831 | |
1832 | tcomplain (); | |
1833 | } | |
1834 | ||
920d2a44 AC |
1835 | static void |
1836 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1837 | struct cmd_list_element *c, const char *value) | |
1838 | { | |
3e43a32a MS |
1839 | fprintf_filtered (file, |
1840 | _("Mode for reading from readonly sections is %s.\n"), | |
920d2a44 AC |
1841 | value); |
1842 | } | |
3a11626d | 1843 | |
1e3ff5ad AC |
1844 | /* More generic transfers. */ |
1845 | ||
0088c768 | 1846 | static LONGEST |
8aa91c1e | 1847 | default_xfer_partial (struct target_ops *ops, enum target_object object, |
2bc416ba | 1848 | const char *annex, gdb_byte *readbuf, |
1b0ba102 | 1849 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) |
0088c768 AC |
1850 | { |
1851 | if (object == TARGET_OBJECT_MEMORY | |
c8e73a31 AC |
1852 | && ops->deprecated_xfer_memory != NULL) |
1853 | /* If available, fall back to the target's | |
1854 | "deprecated_xfer_memory" method. */ | |
0088c768 | 1855 | { |
4b8a223f | 1856 | int xfered = -1; |
5d502164 | 1857 | |
0088c768 | 1858 | errno = 0; |
4b8a223f AC |
1859 | if (writebuf != NULL) |
1860 | { | |
1861 | void *buffer = xmalloc (len); | |
1862 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |
5d502164 | 1863 | |
4b8a223f | 1864 | memcpy (buffer, writebuf, len); |
c8e73a31 AC |
1865 | xfered = ops->deprecated_xfer_memory (offset, buffer, len, |
1866 | 1/*write*/, NULL, ops); | |
4b8a223f AC |
1867 | do_cleanups (cleanup); |
1868 | } | |
1869 | if (readbuf != NULL) | |
244e85c8 MS |
1870 | xfered = ops->deprecated_xfer_memory (offset, readbuf, len, |
1871 | 0/*read*/, NULL, ops); | |
0088c768 AC |
1872 | if (xfered > 0) |
1873 | return xfered; | |
1874 | else if (xfered == 0 && errno == 0) | |
c8e73a31 AC |
1875 | /* "deprecated_xfer_memory" uses 0, cross checked against |
1876 | ERRNO as one indication of an error. */ | |
0088c768 AC |
1877 | return 0; |
1878 | else | |
1879 | return -1; | |
1880 | } | |
1881 | else if (ops->beneath != NULL) | |
cf7a04e8 DJ |
1882 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, |
1883 | readbuf, writebuf, offset, len); | |
1884 | else | |
1885 | return -1; | |
1886 | } | |
1887 | ||
1888 | /* The xfer_partial handler for the topmost target. Unlike the default, | |
1889 | it does not need to handle memory specially; it just passes all | |
1890 | requests down the stack. */ | |
1891 | ||
1892 | static LONGEST | |
1893 | current_xfer_partial (struct target_ops *ops, enum target_object object, | |
1894 | const char *annex, gdb_byte *readbuf, | |
1895 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1896 | { | |
1897 | if (ops->beneath != NULL) | |
1898 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, | |
1899 | readbuf, writebuf, offset, len); | |
0088c768 AC |
1900 | else |
1901 | return -1; | |
1902 | } | |
1903 | ||
7f79c47e | 1904 | /* Target vector read/write partial wrapper functions. */ |
0088c768 | 1905 | |
13547ab6 | 1906 | static LONGEST |
1e3ff5ad AC |
1907 | target_read_partial (struct target_ops *ops, |
1908 | enum target_object object, | |
1b0ba102 | 1909 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1910 | ULONGEST offset, LONGEST len) |
1911 | { | |
27394598 | 1912 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len); |
1e3ff5ad AC |
1913 | } |
1914 | ||
13547ab6 | 1915 | static LONGEST |
1e3ff5ad AC |
1916 | target_write_partial (struct target_ops *ops, |
1917 | enum target_object object, | |
1b0ba102 | 1918 | const char *annex, const gdb_byte *buf, |
1e3ff5ad AC |
1919 | ULONGEST offset, LONGEST len) |
1920 | { | |
27394598 | 1921 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len); |
1e3ff5ad AC |
1922 | } |
1923 | ||
1924 | /* Wrappers to perform the full transfer. */ | |
7f79c47e DE |
1925 | |
1926 | /* For docs on target_read see target.h. */ | |
1927 | ||
1e3ff5ad AC |
1928 | LONGEST |
1929 | target_read (struct target_ops *ops, | |
1930 | enum target_object object, | |
1b0ba102 | 1931 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1932 | ULONGEST offset, LONGEST len) |
1933 | { | |
1934 | LONGEST xfered = 0; | |
5d502164 | 1935 | |
1e3ff5ad AC |
1936 | while (xfered < len) |
1937 | { | |
0088c768 | 1938 | LONGEST xfer = target_read_partial (ops, object, annex, |
fc1a4b47 | 1939 | (gdb_byte *) buf + xfered, |
0088c768 | 1940 | offset + xfered, len - xfered); |
5d502164 | 1941 | |
1e3ff5ad | 1942 | /* Call an observer, notifying them of the xfer progress? */ |
13547ab6 DJ |
1943 | if (xfer == 0) |
1944 | return xfered; | |
1945 | if (xfer < 0) | |
0088c768 | 1946 | return -1; |
1e3ff5ad AC |
1947 | xfered += xfer; |
1948 | QUIT; | |
1949 | } | |
1950 | return len; | |
1951 | } | |
1952 | ||
f1a507a1 JB |
1953 | /* Assuming that the entire [begin, end) range of memory cannot be |
1954 | read, try to read whatever subrange is possible to read. | |
1955 | ||
1956 | The function returns, in RESULT, either zero or one memory block. | |
1957 | If there's a readable subrange at the beginning, it is completely | |
1958 | read and returned. Any further readable subrange will not be read. | |
1959 | Otherwise, if there's a readable subrange at the end, it will be | |
1960 | completely read and returned. Any readable subranges before it | |
1961 | (obviously, not starting at the beginning), will be ignored. In | |
1962 | other cases -- either no readable subrange, or readable subrange(s) | |
1963 | that is neither at the beginning, or end, nothing is returned. | |
1964 | ||
1965 | The purpose of this function is to handle a read across a boundary | |
1966 | of accessible memory in a case when memory map is not available. | |
1967 | The above restrictions are fine for this case, but will give | |
1968 | incorrect results if the memory is 'patchy'. However, supporting | |
1969 | 'patchy' memory would require trying to read every single byte, | |
1970 | and it seems unacceptable solution. Explicit memory map is | |
1971 | recommended for this case -- and target_read_memory_robust will | |
1972 | take care of reading multiple ranges then. */ | |
8dedea02 VP |
1973 | |
1974 | static void | |
3e43a32a MS |
1975 | read_whatever_is_readable (struct target_ops *ops, |
1976 | ULONGEST begin, ULONGEST end, | |
8dedea02 | 1977 | VEC(memory_read_result_s) **result) |
d5086790 | 1978 | { |
f1a507a1 | 1979 | gdb_byte *buf = xmalloc (end - begin); |
8dedea02 VP |
1980 | ULONGEST current_begin = begin; |
1981 | ULONGEST current_end = end; | |
1982 | int forward; | |
1983 | memory_read_result_s r; | |
1984 | ||
1985 | /* If we previously failed to read 1 byte, nothing can be done here. */ | |
1986 | if (end - begin <= 1) | |
13b3fd9b MS |
1987 | { |
1988 | xfree (buf); | |
1989 | return; | |
1990 | } | |
8dedea02 VP |
1991 | |
1992 | /* Check that either first or the last byte is readable, and give up | |
c378eb4e | 1993 | if not. This heuristic is meant to permit reading accessible memory |
8dedea02 VP |
1994 | at the boundary of accessible region. */ |
1995 | if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
1996 | buf, begin, 1) == 1) | |
1997 | { | |
1998 | forward = 1; | |
1999 | ++current_begin; | |
2000 | } | |
2001 | else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
2002 | buf + (end-begin) - 1, end - 1, 1) == 1) | |
2003 | { | |
2004 | forward = 0; | |
2005 | --current_end; | |
2006 | } | |
2007 | else | |
2008 | { | |
13b3fd9b | 2009 | xfree (buf); |
8dedea02 VP |
2010 | return; |
2011 | } | |
2012 | ||
2013 | /* Loop invariant is that the [current_begin, current_end) was previously | |
2014 | found to be not readable as a whole. | |
2015 | ||
2016 | Note loop condition -- if the range has 1 byte, we can't divide the range | |
2017 | so there's no point trying further. */ | |
2018 | while (current_end - current_begin > 1) | |
2019 | { | |
2020 | ULONGEST first_half_begin, first_half_end; | |
2021 | ULONGEST second_half_begin, second_half_end; | |
2022 | LONGEST xfer; | |
8dedea02 | 2023 | ULONGEST middle = current_begin + (current_end - current_begin)/2; |
f1a507a1 | 2024 | |
8dedea02 VP |
2025 | if (forward) |
2026 | { | |
2027 | first_half_begin = current_begin; | |
2028 | first_half_end = middle; | |
2029 | second_half_begin = middle; | |
2030 | second_half_end = current_end; | |
2031 | } | |
2032 | else | |
2033 | { | |
2034 | first_half_begin = middle; | |
2035 | first_half_end = current_end; | |
2036 | second_half_begin = current_begin; | |
2037 | second_half_end = middle; | |
2038 | } | |
2039 | ||
2040 | xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2041 | buf + (first_half_begin - begin), | |
2042 | first_half_begin, | |
2043 | first_half_end - first_half_begin); | |
2044 | ||
2045 | if (xfer == first_half_end - first_half_begin) | |
2046 | { | |
c378eb4e | 2047 | /* This half reads up fine. So, the error must be in the |
3e43a32a | 2048 | other half. */ |
8dedea02 VP |
2049 | current_begin = second_half_begin; |
2050 | current_end = second_half_end; | |
2051 | } | |
2052 | else | |
2053 | { | |
c378eb4e MS |
2054 | /* This half is not readable. Because we've tried one byte, we |
2055 | know some part of this half if actually redable. Go to the next | |
8dedea02 VP |
2056 | iteration to divide again and try to read. |
2057 | ||
2058 | We don't handle the other half, because this function only tries | |
2059 | to read a single readable subrange. */ | |
2060 | current_begin = first_half_begin; | |
2061 | current_end = first_half_end; | |
2062 | } | |
2063 | } | |
2064 | ||
2065 | if (forward) | |
2066 | { | |
2067 | /* The [begin, current_begin) range has been read. */ | |
2068 | r.begin = begin; | |
2069 | r.end = current_begin; | |
2070 | r.data = buf; | |
2071 | } | |
2072 | else | |
2073 | { | |
2074 | /* The [current_end, end) range has been read. */ | |
2075 | LONGEST rlen = end - current_end; | |
f1a507a1 | 2076 | |
8dedea02 VP |
2077 | r.data = xmalloc (rlen); |
2078 | memcpy (r.data, buf + current_end - begin, rlen); | |
2079 | r.begin = current_end; | |
2080 | r.end = end; | |
2081 | xfree (buf); | |
2082 | } | |
2083 | VEC_safe_push(memory_read_result_s, (*result), &r); | |
2084 | } | |
2085 | ||
2086 | void | |
2087 | free_memory_read_result_vector (void *x) | |
2088 | { | |
2089 | VEC(memory_read_result_s) *v = x; | |
2090 | memory_read_result_s *current; | |
2091 | int ix; | |
2092 | ||
2093 | for (ix = 0; VEC_iterate (memory_read_result_s, v, ix, current); ++ix) | |
2094 | { | |
2095 | xfree (current->data); | |
2096 | } | |
2097 | VEC_free (memory_read_result_s, v); | |
2098 | } | |
2099 | ||
2100 | VEC(memory_read_result_s) * | |
2101 | read_memory_robust (struct target_ops *ops, ULONGEST offset, LONGEST len) | |
2102 | { | |
2103 | VEC(memory_read_result_s) *result = 0; | |
2104 | ||
2105 | LONGEST xfered = 0; | |
d5086790 VP |
2106 | while (xfered < len) |
2107 | { | |
8dedea02 VP |
2108 | struct mem_region *region = lookup_mem_region (offset + xfered); |
2109 | LONGEST rlen; | |
5d502164 | 2110 | |
8dedea02 VP |
2111 | /* If there is no explicit region, a fake one should be created. */ |
2112 | gdb_assert (region); | |
2113 | ||
2114 | if (region->hi == 0) | |
2115 | rlen = len - xfered; | |
2116 | else | |
2117 | rlen = region->hi - offset; | |
2118 | ||
2119 | if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO) | |
d5086790 | 2120 | { |
c378eb4e | 2121 | /* Cannot read this region. Note that we can end up here only |
8dedea02 VP |
2122 | if the region is explicitly marked inaccessible, or |
2123 | 'inaccessible-by-default' is in effect. */ | |
2124 | xfered += rlen; | |
2125 | } | |
2126 | else | |
2127 | { | |
2128 | LONGEST to_read = min (len - xfered, rlen); | |
2129 | gdb_byte *buffer = (gdb_byte *)xmalloc (to_read); | |
2130 | ||
2131 | LONGEST xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2132 | (gdb_byte *) buffer, | |
2133 | offset + xfered, to_read); | |
2134 | /* Call an observer, notifying them of the xfer progress? */ | |
d5086790 | 2135 | if (xfer <= 0) |
d5086790 | 2136 | { |
c378eb4e | 2137 | /* Got an error reading full chunk. See if maybe we can read |
8dedea02 VP |
2138 | some subrange. */ |
2139 | xfree (buffer); | |
3e43a32a MS |
2140 | read_whatever_is_readable (ops, offset + xfered, |
2141 | offset + xfered + to_read, &result); | |
8dedea02 | 2142 | xfered += to_read; |
d5086790 | 2143 | } |
8dedea02 VP |
2144 | else |
2145 | { | |
2146 | struct memory_read_result r; | |
2147 | r.data = buffer; | |
2148 | r.begin = offset + xfered; | |
2149 | r.end = r.begin + xfer; | |
2150 | VEC_safe_push (memory_read_result_s, result, &r); | |
2151 | xfered += xfer; | |
2152 | } | |
2153 | QUIT; | |
d5086790 | 2154 | } |
d5086790 | 2155 | } |
8dedea02 | 2156 | return result; |
d5086790 VP |
2157 | } |
2158 | ||
8dedea02 | 2159 | |
cf7a04e8 DJ |
2160 | /* An alternative to target_write with progress callbacks. */ |
2161 | ||
1e3ff5ad | 2162 | LONGEST |
cf7a04e8 DJ |
2163 | target_write_with_progress (struct target_ops *ops, |
2164 | enum target_object object, | |
2165 | const char *annex, const gdb_byte *buf, | |
2166 | ULONGEST offset, LONGEST len, | |
2167 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad AC |
2168 | { |
2169 | LONGEST xfered = 0; | |
a76d924d DJ |
2170 | |
2171 | /* Give the progress callback a chance to set up. */ | |
2172 | if (progress) | |
2173 | (*progress) (0, baton); | |
2174 | ||
1e3ff5ad AC |
2175 | while (xfered < len) |
2176 | { | |
2177 | LONGEST xfer = target_write_partial (ops, object, annex, | |
fc1a4b47 | 2178 | (gdb_byte *) buf + xfered, |
1e3ff5ad | 2179 | offset + xfered, len - xfered); |
cf7a04e8 | 2180 | |
13547ab6 DJ |
2181 | if (xfer == 0) |
2182 | return xfered; | |
2183 | if (xfer < 0) | |
0088c768 | 2184 | return -1; |
cf7a04e8 DJ |
2185 | |
2186 | if (progress) | |
2187 | (*progress) (xfer, baton); | |
2188 | ||
1e3ff5ad AC |
2189 | xfered += xfer; |
2190 | QUIT; | |
2191 | } | |
2192 | return len; | |
2193 | } | |
2194 | ||
7f79c47e DE |
2195 | /* For docs on target_write see target.h. */ |
2196 | ||
cf7a04e8 DJ |
2197 | LONGEST |
2198 | target_write (struct target_ops *ops, | |
2199 | enum target_object object, | |
2200 | const char *annex, const gdb_byte *buf, | |
2201 | ULONGEST offset, LONGEST len) | |
2202 | { | |
2203 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
2204 | NULL, NULL); | |
2205 | } | |
2206 | ||
159f81f3 DJ |
2207 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
2208 | the size of the transferred data. PADDING additional bytes are | |
2209 | available in *BUF_P. This is a helper function for | |
2210 | target_read_alloc; see the declaration of that function for more | |
2211 | information. */ | |
13547ab6 | 2212 | |
159f81f3 DJ |
2213 | static LONGEST |
2214 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, | |
2215 | const char *annex, gdb_byte **buf_p, int padding) | |
13547ab6 DJ |
2216 | { |
2217 | size_t buf_alloc, buf_pos; | |
2218 | gdb_byte *buf; | |
2219 | LONGEST n; | |
2220 | ||
2221 | /* This function does not have a length parameter; it reads the | |
2222 | entire OBJECT). Also, it doesn't support objects fetched partly | |
2223 | from one target and partly from another (in a different stratum, | |
2224 | e.g. a core file and an executable). Both reasons make it | |
2225 | unsuitable for reading memory. */ | |
2226 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
2227 | ||
2228 | /* Start by reading up to 4K at a time. The target will throttle | |
2229 | this number down if necessary. */ | |
2230 | buf_alloc = 4096; | |
2231 | buf = xmalloc (buf_alloc); | |
2232 | buf_pos = 0; | |
2233 | while (1) | |
2234 | { | |
2235 | n = target_read_partial (ops, object, annex, &buf[buf_pos], | |
159f81f3 | 2236 | buf_pos, buf_alloc - buf_pos - padding); |
13547ab6 DJ |
2237 | if (n < 0) |
2238 | { | |
2239 | /* An error occurred. */ | |
2240 | xfree (buf); | |
2241 | return -1; | |
2242 | } | |
2243 | else if (n == 0) | |
2244 | { | |
2245 | /* Read all there was. */ | |
2246 | if (buf_pos == 0) | |
2247 | xfree (buf); | |
2248 | else | |
2249 | *buf_p = buf; | |
2250 | return buf_pos; | |
2251 | } | |
2252 | ||
2253 | buf_pos += n; | |
2254 | ||
2255 | /* If the buffer is filling up, expand it. */ | |
2256 | if (buf_alloc < buf_pos * 2) | |
2257 | { | |
2258 | buf_alloc *= 2; | |
2259 | buf = xrealloc (buf, buf_alloc); | |
2260 | } | |
2261 | ||
2262 | QUIT; | |
2263 | } | |
2264 | } | |
2265 | ||
159f81f3 DJ |
2266 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
2267 | the size of the transferred data. See the declaration in "target.h" | |
2268 | function for more information about the return value. */ | |
2269 | ||
2270 | LONGEST | |
2271 | target_read_alloc (struct target_ops *ops, enum target_object object, | |
2272 | const char *annex, gdb_byte **buf_p) | |
2273 | { | |
2274 | return target_read_alloc_1 (ops, object, annex, buf_p, 0); | |
2275 | } | |
2276 | ||
2277 | /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and | |
2278 | returned as a string, allocated using xmalloc. If an error occurs | |
2279 | or the transfer is unsupported, NULL is returned. Empty objects | |
2280 | are returned as allocated but empty strings. A warning is issued | |
2281 | if the result contains any embedded NUL bytes. */ | |
2282 | ||
2283 | char * | |
2284 | target_read_stralloc (struct target_ops *ops, enum target_object object, | |
2285 | const char *annex) | |
2286 | { | |
2287 | gdb_byte *buffer; | |
2288 | LONGEST transferred; | |
2289 | ||
2290 | transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1); | |
2291 | ||
2292 | if (transferred < 0) | |
2293 | return NULL; | |
2294 | ||
2295 | if (transferred == 0) | |
2296 | return xstrdup (""); | |
2297 | ||
2298 | buffer[transferred] = 0; | |
2299 | if (strlen (buffer) < transferred) | |
2300 | warning (_("target object %d, annex %s, " | |
2301 | "contained unexpected null characters"), | |
2302 | (int) object, annex ? annex : "(none)"); | |
2303 | ||
2304 | return (char *) buffer; | |
2305 | } | |
2306 | ||
b6591e8b AC |
2307 | /* Memory transfer methods. */ |
2308 | ||
2309 | void | |
1b0ba102 | 2310 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
2311 | LONGEST len) |
2312 | { | |
07b82ea5 PA |
2313 | /* This method is used to read from an alternate, non-current |
2314 | target. This read must bypass the overlay support (as symbols | |
2315 | don't match this target), and GDB's internal cache (wrong cache | |
2316 | for this target). */ | |
2317 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) | |
b6591e8b AC |
2318 | != len) |
2319 | memory_error (EIO, addr); | |
2320 | } | |
2321 | ||
2322 | ULONGEST | |
5d502164 MS |
2323 | get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr, |
2324 | int len, enum bfd_endian byte_order) | |
b6591e8b | 2325 | { |
f6519ebc | 2326 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
2327 | |
2328 | gdb_assert (len <= sizeof (buf)); | |
2329 | get_target_memory (ops, addr, buf, len); | |
e17a4113 | 2330 | return extract_unsigned_integer (buf, len, byte_order); |
b6591e8b AC |
2331 | } |
2332 | ||
d914c394 SS |
2333 | int |
2334 | target_insert_breakpoint (struct gdbarch *gdbarch, | |
2335 | struct bp_target_info *bp_tgt) | |
2336 | { | |
2337 | if (!may_insert_breakpoints) | |
2338 | { | |
2339 | warning (_("May not insert breakpoints")); | |
2340 | return 1; | |
2341 | } | |
2342 | ||
2343 | return (*current_target.to_insert_breakpoint) (gdbarch, bp_tgt); | |
2344 | } | |
2345 | ||
2346 | int | |
2347 | target_remove_breakpoint (struct gdbarch *gdbarch, | |
2348 | struct bp_target_info *bp_tgt) | |
2349 | { | |
2350 | /* This is kind of a weird case to handle, but the permission might | |
2351 | have been changed after breakpoints were inserted - in which case | |
2352 | we should just take the user literally and assume that any | |
2353 | breakpoints should be left in place. */ | |
2354 | if (!may_insert_breakpoints) | |
2355 | { | |
2356 | warning (_("May not remove breakpoints")); | |
2357 | return 1; | |
2358 | } | |
2359 | ||
2360 | return (*current_target.to_remove_breakpoint) (gdbarch, bp_tgt); | |
2361 | } | |
2362 | ||
c906108c | 2363 | static void |
fba45db2 | 2364 | target_info (char *args, int from_tty) |
c906108c SS |
2365 | { |
2366 | struct target_ops *t; | |
c906108c | 2367 | int has_all_mem = 0; |
c5aa993b | 2368 | |
c906108c | 2369 | if (symfile_objfile != NULL) |
a3f17187 | 2370 | printf_unfiltered (_("Symbols from \"%s\".\n"), symfile_objfile->name); |
c906108c | 2371 | |
258b763a | 2372 | for (t = target_stack; t != NULL; t = t->beneath) |
c906108c | 2373 | { |
c35b1492 | 2374 | if (!(*t->to_has_memory) (t)) |
c906108c SS |
2375 | continue; |
2376 | ||
c5aa993b | 2377 | if ((int) (t->to_stratum) <= (int) dummy_stratum) |
c906108c SS |
2378 | continue; |
2379 | if (has_all_mem) | |
3e43a32a MS |
2380 | printf_unfiltered (_("\tWhile running this, " |
2381 | "GDB does not access memory from...\n")); | |
c5aa993b JM |
2382 | printf_unfiltered ("%s:\n", t->to_longname); |
2383 | (t->to_files_info) (t); | |
c35b1492 | 2384 | has_all_mem = (*t->to_has_all_memory) (t); |
c906108c SS |
2385 | } |
2386 | } | |
2387 | ||
fd79ecee DJ |
2388 | /* This function is called before any new inferior is created, e.g. |
2389 | by running a program, attaching, or connecting to a target. | |
2390 | It cleans up any state from previous invocations which might | |
2391 | change between runs. This is a subset of what target_preopen | |
2392 | resets (things which might change between targets). */ | |
2393 | ||
2394 | void | |
2395 | target_pre_inferior (int from_tty) | |
2396 | { | |
c378eb4e | 2397 | /* Clear out solib state. Otherwise the solib state of the previous |
b9db4ced | 2398 | inferior might have survived and is entirely wrong for the new |
c378eb4e | 2399 | target. This has been observed on GNU/Linux using glibc 2.3. How |
b9db4ced UW |
2400 | to reproduce: |
2401 | ||
2402 | bash$ ./foo& | |
2403 | [1] 4711 | |
2404 | bash$ ./foo& | |
2405 | [1] 4712 | |
2406 | bash$ gdb ./foo | |
2407 | [...] | |
2408 | (gdb) attach 4711 | |
2409 | (gdb) detach | |
2410 | (gdb) attach 4712 | |
2411 | Cannot access memory at address 0xdeadbeef | |
2412 | */ | |
b9db4ced | 2413 | |
50c71eaf PA |
2414 | /* In some OSs, the shared library list is the same/global/shared |
2415 | across inferiors. If code is shared between processes, so are | |
2416 | memory regions and features. */ | |
2417 | if (!gdbarch_has_global_solist (target_gdbarch)) | |
2418 | { | |
2419 | no_shared_libraries (NULL, from_tty); | |
2420 | ||
2421 | invalidate_target_mem_regions (); | |
424163ea | 2422 | |
50c71eaf PA |
2423 | target_clear_description (); |
2424 | } | |
fd79ecee DJ |
2425 | } |
2426 | ||
b8fa0bfa PA |
2427 | /* Callback for iterate_over_inferiors. Gets rid of the given |
2428 | inferior. */ | |
2429 | ||
2430 | static int | |
2431 | dispose_inferior (struct inferior *inf, void *args) | |
2432 | { | |
2433 | struct thread_info *thread; | |
2434 | ||
2435 | thread = any_thread_of_process (inf->pid); | |
2436 | if (thread) | |
2437 | { | |
2438 | switch_to_thread (thread->ptid); | |
2439 | ||
2440 | /* Core inferiors actually should be detached, not killed. */ | |
2441 | if (target_has_execution) | |
2442 | target_kill (); | |
2443 | else | |
2444 | target_detach (NULL, 0); | |
2445 | } | |
2446 | ||
2447 | return 0; | |
2448 | } | |
2449 | ||
c906108c SS |
2450 | /* This is to be called by the open routine before it does |
2451 | anything. */ | |
2452 | ||
2453 | void | |
fba45db2 | 2454 | target_preopen (int from_tty) |
c906108c | 2455 | { |
c5aa993b | 2456 | dont_repeat (); |
c906108c | 2457 | |
b8fa0bfa | 2458 | if (have_inferiors ()) |
c5aa993b | 2459 | { |
adf40b2e | 2460 | if (!from_tty |
b8fa0bfa PA |
2461 | || !have_live_inferiors () |
2462 | || query (_("A program is being debugged already. Kill it? "))) | |
2463 | iterate_over_inferiors (dispose_inferior, NULL); | |
c906108c | 2464 | else |
8a3fe4f8 | 2465 | error (_("Program not killed.")); |
c906108c SS |
2466 | } |
2467 | ||
2468 | /* Calling target_kill may remove the target from the stack. But if | |
2469 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
2470 | /* Leave the exec target, though. The user may be switching from a |
2471 | live process to a core of the same program. */ | |
2472 | pop_all_targets_above (file_stratum, 0); | |
fd79ecee DJ |
2473 | |
2474 | target_pre_inferior (from_tty); | |
c906108c SS |
2475 | } |
2476 | ||
2477 | /* Detach a target after doing deferred register stores. */ | |
2478 | ||
2479 | void | |
fba45db2 | 2480 | target_detach (char *args, int from_tty) |
c906108c | 2481 | { |
136d6dae VP |
2482 | struct target_ops* t; |
2483 | ||
2567c7d9 | 2484 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
2485 | /* Don't remove global breakpoints here. They're removed on |
2486 | disconnection from the target. */ | |
2487 | ; | |
2488 | else | |
2489 | /* If we're in breakpoints-always-inserted mode, have to remove | |
2490 | them before detaching. */ | |
6c95b8df | 2491 | remove_breakpoints_pid (PIDGET (inferior_ptid)); |
74960c60 | 2492 | |
24291992 PA |
2493 | prepare_for_detach (); |
2494 | ||
136d6dae VP |
2495 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2496 | { | |
2497 | if (t->to_detach != NULL) | |
2498 | { | |
2499 | t->to_detach (t, args, from_tty); | |
947b8855 PA |
2500 | if (targetdebug) |
2501 | fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n", | |
2502 | args, from_tty); | |
136d6dae VP |
2503 | return; |
2504 | } | |
2505 | } | |
2506 | ||
9b20d036 | 2507 | internal_error (__FILE__, __LINE__, _("could not find a target to detach")); |
c906108c SS |
2508 | } |
2509 | ||
6ad8ae5c DJ |
2510 | void |
2511 | target_disconnect (char *args, int from_tty) | |
2512 | { | |
597320e7 DJ |
2513 | struct target_ops *t; |
2514 | ||
50c71eaf PA |
2515 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
2516 | are global across processes, we have to remove them before | |
2517 | disconnecting. */ | |
74960c60 VP |
2518 | remove_breakpoints (); |
2519 | ||
597320e7 DJ |
2520 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2521 | if (t->to_disconnect != NULL) | |
2522 | { | |
2523 | if (targetdebug) | |
2524 | fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n", | |
2525 | args, from_tty); | |
2526 | t->to_disconnect (t, args, from_tty); | |
2527 | return; | |
2528 | } | |
2529 | ||
2530 | tcomplain (); | |
6ad8ae5c DJ |
2531 | } |
2532 | ||
117de6a9 | 2533 | ptid_t |
47608cb1 | 2534 | target_wait (ptid_t ptid, struct target_waitstatus *status, int options) |
117de6a9 PA |
2535 | { |
2536 | struct target_ops *t; | |
2537 | ||
2538 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2539 | { | |
2540 | if (t->to_wait != NULL) | |
2541 | { | |
47608cb1 | 2542 | ptid_t retval = (*t->to_wait) (t, ptid, status, options); |
117de6a9 PA |
2543 | |
2544 | if (targetdebug) | |
2545 | { | |
2546 | char *status_string; | |
2547 | ||
2548 | status_string = target_waitstatus_to_string (status); | |
2549 | fprintf_unfiltered (gdb_stdlog, | |
2550 | "target_wait (%d, status) = %d, %s\n", | |
2551 | PIDGET (ptid), PIDGET (retval), | |
2552 | status_string); | |
2553 | xfree (status_string); | |
2554 | } | |
2555 | ||
2556 | return retval; | |
2557 | } | |
2558 | } | |
2559 | ||
2560 | noprocess (); | |
2561 | } | |
2562 | ||
2563 | char * | |
2564 | target_pid_to_str (ptid_t ptid) | |
2565 | { | |
2566 | struct target_ops *t; | |
2567 | ||
2568 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2569 | { | |
2570 | if (t->to_pid_to_str != NULL) | |
2571 | return (*t->to_pid_to_str) (t, ptid); | |
2572 | } | |
2573 | ||
2574 | return normal_pid_to_str (ptid); | |
2575 | } | |
2576 | ||
4694da01 TT |
2577 | char * |
2578 | target_thread_name (struct thread_info *info) | |
2579 | { | |
2580 | struct target_ops *t; | |
2581 | ||
2582 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2583 | { | |
2584 | if (t->to_thread_name != NULL) | |
2585 | return (*t->to_thread_name) (info); | |
2586 | } | |
2587 | ||
2588 | return NULL; | |
2589 | } | |
2590 | ||
e1ac3328 VP |
2591 | void |
2592 | target_resume (ptid_t ptid, int step, enum target_signal signal) | |
2593 | { | |
28439f5e PA |
2594 | struct target_ops *t; |
2595 | ||
4e5d721f | 2596 | target_dcache_invalidate (); |
28439f5e PA |
2597 | |
2598 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2599 | { | |
2600 | if (t->to_resume != NULL) | |
2601 | { | |
2602 | t->to_resume (t, ptid, step, signal); | |
2603 | if (targetdebug) | |
2604 | fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n", | |
2605 | PIDGET (ptid), | |
2606 | step ? "step" : "continue", | |
2607 | target_signal_to_name (signal)); | |
2608 | ||
e66408ed | 2609 | registers_changed_ptid (ptid); |
28439f5e PA |
2610 | set_executing (ptid, 1); |
2611 | set_running (ptid, 1); | |
edb3359d | 2612 | clear_inline_frame_state (ptid); |
28439f5e PA |
2613 | return; |
2614 | } | |
2615 | } | |
2616 | ||
2617 | noprocess (); | |
e1ac3328 | 2618 | } |
2455069d UW |
2619 | |
2620 | void | |
2621 | target_pass_signals (int numsigs, unsigned char *pass_signals) | |
2622 | { | |
2623 | struct target_ops *t; | |
2624 | ||
2625 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2626 | { | |
2627 | if (t->to_pass_signals != NULL) | |
2628 | { | |
2629 | if (targetdebug) | |
2630 | { | |
2631 | int i; | |
2632 | ||
2633 | fprintf_unfiltered (gdb_stdlog, "target_pass_signals (%d, {", | |
2634 | numsigs); | |
2635 | ||
2636 | for (i = 0; i < numsigs; i++) | |
2637 | if (pass_signals[i]) | |
2638 | fprintf_unfiltered (gdb_stdlog, " %s", | |
2639 | target_signal_to_name (i)); | |
2640 | ||
2641 | fprintf_unfiltered (gdb_stdlog, " })\n"); | |
2642 | } | |
2643 | ||
2644 | (*t->to_pass_signals) (numsigs, pass_signals); | |
2645 | return; | |
2646 | } | |
2647 | } | |
2648 | } | |
2649 | ||
ee057212 DJ |
2650 | /* Look through the list of possible targets for a target that can |
2651 | follow forks. */ | |
2652 | ||
2653 | int | |
2654 | target_follow_fork (int follow_child) | |
2655 | { | |
2656 | struct target_ops *t; | |
2657 | ||
2658 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2659 | { | |
2660 | if (t->to_follow_fork != NULL) | |
2661 | { | |
2662 | int retval = t->to_follow_fork (t, follow_child); | |
5d502164 | 2663 | |
ee057212 DJ |
2664 | if (targetdebug) |
2665 | fprintf_unfiltered (gdb_stdlog, "target_follow_fork (%d) = %d\n", | |
2666 | follow_child, retval); | |
2667 | return retval; | |
2668 | } | |
2669 | } | |
2670 | ||
2671 | /* Some target returned a fork event, but did not know how to follow it. */ | |
2672 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 2673 | _("could not find a target to follow fork")); |
ee057212 DJ |
2674 | } |
2675 | ||
136d6dae VP |
2676 | void |
2677 | target_mourn_inferior (void) | |
2678 | { | |
2679 | struct target_ops *t; | |
5d502164 | 2680 | |
136d6dae VP |
2681 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2682 | { | |
2683 | if (t->to_mourn_inferior != NULL) | |
2684 | { | |
2685 | t->to_mourn_inferior (t); | |
947b8855 PA |
2686 | if (targetdebug) |
2687 | fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n"); | |
efbd6e75 JB |
2688 | |
2689 | /* We no longer need to keep handles on any of the object files. | |
2690 | Make sure to release them to avoid unnecessarily locking any | |
2691 | of them while we're not actually debugging. */ | |
2692 | bfd_cache_close_all (); | |
2693 | ||
136d6dae VP |
2694 | return; |
2695 | } | |
2696 | } | |
2697 | ||
2698 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 2699 | _("could not find a target to follow mourn inferior")); |
136d6dae VP |
2700 | } |
2701 | ||
424163ea DJ |
2702 | /* Look for a target which can describe architectural features, starting |
2703 | from TARGET. If we find one, return its description. */ | |
2704 | ||
2705 | const struct target_desc * | |
2706 | target_read_description (struct target_ops *target) | |
2707 | { | |
2708 | struct target_ops *t; | |
2709 | ||
2710 | for (t = target; t != NULL; t = t->beneath) | |
2711 | if (t->to_read_description != NULL) | |
2712 | { | |
2713 | const struct target_desc *tdesc; | |
2714 | ||
2715 | tdesc = t->to_read_description (t); | |
2716 | if (tdesc) | |
2717 | return tdesc; | |
2718 | } | |
2719 | ||
2720 | return NULL; | |
2721 | } | |
2722 | ||
08388c79 DE |
2723 | /* The default implementation of to_search_memory. |
2724 | This implements a basic search of memory, reading target memory and | |
2725 | performing the search here (as opposed to performing the search in on the | |
2726 | target side with, for example, gdbserver). */ | |
2727 | ||
2728 | int | |
2729 | simple_search_memory (struct target_ops *ops, | |
2730 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2731 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2732 | CORE_ADDR *found_addrp) | |
2733 | { | |
2734 | /* NOTE: also defined in find.c testcase. */ | |
2735 | #define SEARCH_CHUNK_SIZE 16000 | |
2736 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
2737 | /* Buffer to hold memory contents for searching. */ | |
2738 | gdb_byte *search_buf; | |
2739 | unsigned search_buf_size; | |
2740 | struct cleanup *old_cleanups; | |
2741 | ||
2742 | search_buf_size = chunk_size + pattern_len - 1; | |
2743 | ||
2744 | /* No point in trying to allocate a buffer larger than the search space. */ | |
2745 | if (search_space_len < search_buf_size) | |
2746 | search_buf_size = search_space_len; | |
2747 | ||
2748 | search_buf = malloc (search_buf_size); | |
2749 | if (search_buf == NULL) | |
5e1471f5 | 2750 | error (_("Unable to allocate memory to perform the search.")); |
08388c79 DE |
2751 | old_cleanups = make_cleanup (free_current_contents, &search_buf); |
2752 | ||
2753 | /* Prime the search buffer. */ | |
2754 | ||
2755 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2756 | search_buf, start_addr, search_buf_size) != search_buf_size) | |
2757 | { | |
5e1471f5 | 2758 | warning (_("Unable to access target memory at %s, halting search."), |
08388c79 DE |
2759 | hex_string (start_addr)); |
2760 | do_cleanups (old_cleanups); | |
2761 | return -1; | |
2762 | } | |
2763 | ||
2764 | /* Perform the search. | |
2765 | ||
2766 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
2767 | When we've scanned N bytes we copy the trailing bytes to the start and | |
2768 | read in another N bytes. */ | |
2769 | ||
2770 | while (search_space_len >= pattern_len) | |
2771 | { | |
2772 | gdb_byte *found_ptr; | |
2773 | unsigned nr_search_bytes = min (search_space_len, search_buf_size); | |
2774 | ||
2775 | found_ptr = memmem (search_buf, nr_search_bytes, | |
2776 | pattern, pattern_len); | |
2777 | ||
2778 | if (found_ptr != NULL) | |
2779 | { | |
2780 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
5d502164 | 2781 | |
08388c79 DE |
2782 | *found_addrp = found_addr; |
2783 | do_cleanups (old_cleanups); | |
2784 | return 1; | |
2785 | } | |
2786 | ||
2787 | /* Not found in this chunk, skip to next chunk. */ | |
2788 | ||
2789 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
2790 | if (search_space_len >= chunk_size) | |
2791 | search_space_len -= chunk_size; | |
2792 | else | |
2793 | search_space_len = 0; | |
2794 | ||
2795 | if (search_space_len >= pattern_len) | |
2796 | { | |
2797 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 2798 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
2799 | int nr_to_read; |
2800 | ||
2801 | /* Copy the trailing part of the previous iteration to the front | |
2802 | of the buffer for the next iteration. */ | |
2803 | gdb_assert (keep_len == pattern_len - 1); | |
2804 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
2805 | ||
2806 | nr_to_read = min (search_space_len - keep_len, chunk_size); | |
2807 | ||
2808 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2809 | search_buf + keep_len, read_addr, | |
2810 | nr_to_read) != nr_to_read) | |
2811 | { | |
9b20d036 MS |
2812 | warning (_("Unable to access target " |
2813 | "memory at %s, halting search."), | |
08388c79 DE |
2814 | hex_string (read_addr)); |
2815 | do_cleanups (old_cleanups); | |
2816 | return -1; | |
2817 | } | |
2818 | ||
2819 | start_addr += chunk_size; | |
2820 | } | |
2821 | } | |
2822 | ||
2823 | /* Not found. */ | |
2824 | ||
2825 | do_cleanups (old_cleanups); | |
2826 | return 0; | |
2827 | } | |
2828 | ||
2829 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the | |
2830 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2831 | ||
2832 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2833 | requiring halting of the search (e.g. memory read error). | |
2834 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2835 | ||
2836 | int | |
2837 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2838 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2839 | CORE_ADDR *found_addrp) | |
2840 | { | |
2841 | struct target_ops *t; | |
2842 | int found; | |
2843 | ||
2844 | /* We don't use INHERIT to set current_target.to_search_memory, | |
2845 | so we have to scan the target stack and handle targetdebug | |
2846 | ourselves. */ | |
2847 | ||
2848 | if (targetdebug) | |
2849 | fprintf_unfiltered (gdb_stdlog, "target_search_memory (%s, ...)\n", | |
2850 | hex_string (start_addr)); | |
2851 | ||
2852 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2853 | if (t->to_search_memory != NULL) | |
2854 | break; | |
2855 | ||
2856 | if (t != NULL) | |
2857 | { | |
2858 | found = t->to_search_memory (t, start_addr, search_space_len, | |
2859 | pattern, pattern_len, found_addrp); | |
2860 | } | |
2861 | else | |
2862 | { | |
2863 | /* If a special version of to_search_memory isn't available, use the | |
2864 | simple version. */ | |
c35b1492 | 2865 | found = simple_search_memory (current_target.beneath, |
08388c79 DE |
2866 | start_addr, search_space_len, |
2867 | pattern, pattern_len, found_addrp); | |
2868 | } | |
2869 | ||
2870 | if (targetdebug) | |
2871 | fprintf_unfiltered (gdb_stdlog, " = %d\n", found); | |
2872 | ||
2873 | return found; | |
2874 | } | |
2875 | ||
8edfe269 DJ |
2876 | /* Look through the currently pushed targets. If none of them will |
2877 | be able to restart the currently running process, issue an error | |
2878 | message. */ | |
2879 | ||
2880 | void | |
2881 | target_require_runnable (void) | |
2882 | { | |
2883 | struct target_ops *t; | |
2884 | ||
2885 | for (t = target_stack; t != NULL; t = t->beneath) | |
2886 | { | |
2887 | /* If this target knows how to create a new program, then | |
2888 | assume we will still be able to after killing the current | |
2889 | one. Either killing and mourning will not pop T, or else | |
2890 | find_default_run_target will find it again. */ | |
2891 | if (t->to_create_inferior != NULL) | |
2892 | return; | |
2893 | ||
2894 | /* Do not worry about thread_stratum targets that can not | |
2895 | create inferiors. Assume they will be pushed again if | |
2896 | necessary, and continue to the process_stratum. */ | |
85e747d2 UW |
2897 | if (t->to_stratum == thread_stratum |
2898 | || t->to_stratum == arch_stratum) | |
8edfe269 DJ |
2899 | continue; |
2900 | ||
3e43a32a MS |
2901 | error (_("The \"%s\" target does not support \"run\". " |
2902 | "Try \"help target\" or \"continue\"."), | |
8edfe269 DJ |
2903 | t->to_shortname); |
2904 | } | |
2905 | ||
2906 | /* This function is only called if the target is running. In that | |
2907 | case there should have been a process_stratum target and it | |
c378eb4e | 2908 | should either know how to create inferiors, or not... */ |
9b20d036 | 2909 | internal_error (__FILE__, __LINE__, _("No targets found")); |
8edfe269 DJ |
2910 | } |
2911 | ||
c906108c SS |
2912 | /* Look through the list of possible targets for a target that can |
2913 | execute a run or attach command without any other data. This is | |
2914 | used to locate the default process stratum. | |
2915 | ||
5f667f2d PA |
2916 | If DO_MESG is not NULL, the result is always valid (error() is |
2917 | called for errors); else, return NULL on error. */ | |
c906108c SS |
2918 | |
2919 | static struct target_ops * | |
fba45db2 | 2920 | find_default_run_target (char *do_mesg) |
c906108c SS |
2921 | { |
2922 | struct target_ops **t; | |
2923 | struct target_ops *runable = NULL; | |
2924 | int count; | |
2925 | ||
2926 | count = 0; | |
2927 | ||
2928 | for (t = target_structs; t < target_structs + target_struct_size; | |
2929 | ++t) | |
2930 | { | |
c5aa993b | 2931 | if ((*t)->to_can_run && target_can_run (*t)) |
c906108c SS |
2932 | { |
2933 | runable = *t; | |
2934 | ++count; | |
2935 | } | |
2936 | } | |
2937 | ||
2938 | if (count != 1) | |
5f667f2d PA |
2939 | { |
2940 | if (do_mesg) | |
2941 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
2942 | else | |
2943 | return NULL; | |
2944 | } | |
c906108c SS |
2945 | |
2946 | return runable; | |
2947 | } | |
2948 | ||
2949 | void | |
136d6dae | 2950 | find_default_attach (struct target_ops *ops, char *args, int from_tty) |
c906108c SS |
2951 | { |
2952 | struct target_ops *t; | |
2953 | ||
c5aa993b | 2954 | t = find_default_run_target ("attach"); |
136d6dae | 2955 | (t->to_attach) (t, args, from_tty); |
c906108c SS |
2956 | return; |
2957 | } | |
2958 | ||
c906108c | 2959 | void |
136d6dae VP |
2960 | find_default_create_inferior (struct target_ops *ops, |
2961 | char *exec_file, char *allargs, char **env, | |
c27cda74 | 2962 | int from_tty) |
c906108c SS |
2963 | { |
2964 | struct target_ops *t; | |
2965 | ||
c5aa993b | 2966 | t = find_default_run_target ("run"); |
136d6dae | 2967 | (t->to_create_inferior) (t, exec_file, allargs, env, from_tty); |
c906108c SS |
2968 | return; |
2969 | } | |
2970 | ||
2c0b251b | 2971 | static int |
b84876c2 PA |
2972 | find_default_can_async_p (void) |
2973 | { | |
2974 | struct target_ops *t; | |
2975 | ||
5f667f2d PA |
2976 | /* This may be called before the target is pushed on the stack; |
2977 | look for the default process stratum. If there's none, gdb isn't | |
2978 | configured with a native debugger, and target remote isn't | |
2979 | connected yet. */ | |
2980 | t = find_default_run_target (NULL); | |
2981 | if (t && t->to_can_async_p) | |
b84876c2 PA |
2982 | return (t->to_can_async_p) (); |
2983 | return 0; | |
2984 | } | |
2985 | ||
2c0b251b | 2986 | static int |
b84876c2 PA |
2987 | find_default_is_async_p (void) |
2988 | { | |
2989 | struct target_ops *t; | |
2990 | ||
5f667f2d PA |
2991 | /* This may be called before the target is pushed on the stack; |
2992 | look for the default process stratum. If there's none, gdb isn't | |
2993 | configured with a native debugger, and target remote isn't | |
2994 | connected yet. */ | |
2995 | t = find_default_run_target (NULL); | |
2996 | if (t && t->to_is_async_p) | |
b84876c2 PA |
2997 | return (t->to_is_async_p) (); |
2998 | return 0; | |
2999 | } | |
3000 | ||
2c0b251b | 3001 | static int |
9908b566 VP |
3002 | find_default_supports_non_stop (void) |
3003 | { | |
3004 | struct target_ops *t; | |
3005 | ||
3006 | t = find_default_run_target (NULL); | |
3007 | if (t && t->to_supports_non_stop) | |
3008 | return (t->to_supports_non_stop) (); | |
3009 | return 0; | |
3010 | } | |
3011 | ||
3012 | int | |
2c0b251b | 3013 | target_supports_non_stop (void) |
9908b566 VP |
3014 | { |
3015 | struct target_ops *t; | |
5d502164 | 3016 | |
9908b566 VP |
3017 | for (t = ¤t_target; t != NULL; t = t->beneath) |
3018 | if (t->to_supports_non_stop) | |
3019 | return t->to_supports_non_stop (); | |
3020 | ||
3021 | return 0; | |
3022 | } | |
3023 | ||
03583c20 UW |
3024 | static int |
3025 | find_default_supports_disable_randomization (void) | |
3026 | { | |
3027 | struct target_ops *t; | |
3028 | ||
3029 | t = find_default_run_target (NULL); | |
3030 | if (t && t->to_supports_disable_randomization) | |
3031 | return (t->to_supports_disable_randomization) (); | |
3032 | return 0; | |
3033 | } | |
3034 | ||
3035 | int | |
3036 | target_supports_disable_randomization (void) | |
3037 | { | |
3038 | struct target_ops *t; | |
3039 | ||
3040 | for (t = ¤t_target; t != NULL; t = t->beneath) | |
3041 | if (t->to_supports_disable_randomization) | |
3042 | return t->to_supports_disable_randomization (); | |
3043 | ||
3044 | return 0; | |
3045 | } | |
9908b566 | 3046 | |
07e059b5 VP |
3047 | char * |
3048 | target_get_osdata (const char *type) | |
3049 | { | |
07e059b5 VP |
3050 | struct target_ops *t; |
3051 | ||
739ef7fb PA |
3052 | /* If we're already connected to something that can get us OS |
3053 | related data, use it. Otherwise, try using the native | |
3054 | target. */ | |
3055 | if (current_target.to_stratum >= process_stratum) | |
6d097e65 | 3056 | t = current_target.beneath; |
739ef7fb PA |
3057 | else |
3058 | t = find_default_run_target ("get OS data"); | |
07e059b5 VP |
3059 | |
3060 | if (!t) | |
3061 | return NULL; | |
3062 | ||
6d097e65 | 3063 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
3064 | } |
3065 | ||
6c95b8df PA |
3066 | /* Determine the current address space of thread PTID. */ |
3067 | ||
3068 | struct address_space * | |
3069 | target_thread_address_space (ptid_t ptid) | |
3070 | { | |
c0694254 | 3071 | struct address_space *aspace; |
6c95b8df | 3072 | struct inferior *inf; |
c0694254 PA |
3073 | struct target_ops *t; |
3074 | ||
3075 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3076 | { | |
3077 | if (t->to_thread_address_space != NULL) | |
3078 | { | |
3079 | aspace = t->to_thread_address_space (t, ptid); | |
3080 | gdb_assert (aspace); | |
6c95b8df | 3081 | |
c0694254 PA |
3082 | if (targetdebug) |
3083 | fprintf_unfiltered (gdb_stdlog, | |
3084 | "target_thread_address_space (%s) = %d\n", | |
3085 | target_pid_to_str (ptid), | |
3086 | address_space_num (aspace)); | |
3087 | return aspace; | |
3088 | } | |
3089 | } | |
6c95b8df PA |
3090 | |
3091 | /* Fall-back to the "main" address space of the inferior. */ | |
3092 | inf = find_inferior_pid (ptid_get_pid (ptid)); | |
3093 | ||
3094 | if (inf == NULL || inf->aspace == NULL) | |
3e43a32a | 3095 | internal_error (__FILE__, __LINE__, |
9b20d036 MS |
3096 | _("Can't determine the current " |
3097 | "address space of thread %s\n"), | |
6c95b8df PA |
3098 | target_pid_to_str (ptid)); |
3099 | ||
3100 | return inf->aspace; | |
3101 | } | |
3102 | ||
e0d24f8d WZ |
3103 | static int |
3104 | default_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
3105 | { | |
ffe5a37e | 3106 | return (len <= gdbarch_ptr_bit (target_gdbarch) / TARGET_CHAR_BIT); |
ccaa32c7 GS |
3107 | } |
3108 | ||
5009afc5 AS |
3109 | static int |
3110 | default_watchpoint_addr_within_range (struct target_ops *target, | |
3111 | CORE_ADDR addr, | |
3112 | CORE_ADDR start, int length) | |
3113 | { | |
3114 | return addr >= start && addr < start + length; | |
3115 | } | |
3116 | ||
c2250ad1 UW |
3117 | static struct gdbarch * |
3118 | default_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
3119 | { | |
3120 | return target_gdbarch; | |
3121 | } | |
3122 | ||
c906108c | 3123 | static int |
fba45db2 | 3124 | return_zero (void) |
c906108c SS |
3125 | { |
3126 | return 0; | |
3127 | } | |
3128 | ||
3129 | static int | |
fba45db2 | 3130 | return_one (void) |
c906108c SS |
3131 | { |
3132 | return 1; | |
3133 | } | |
3134 | ||
ccaa32c7 GS |
3135 | static int |
3136 | return_minus_one (void) | |
3137 | { | |
3138 | return -1; | |
3139 | } | |
3140 | ||
7a292a7a SS |
3141 | /* Find a single runnable target in the stack and return it. If for |
3142 | some reason there is more than one, return NULL. */ | |
3143 | ||
3144 | struct target_ops * | |
fba45db2 | 3145 | find_run_target (void) |
7a292a7a SS |
3146 | { |
3147 | struct target_ops **t; | |
3148 | struct target_ops *runable = NULL; | |
3149 | int count; | |
c5aa993b | 3150 | |
7a292a7a | 3151 | count = 0; |
c5aa993b | 3152 | |
7a292a7a SS |
3153 | for (t = target_structs; t < target_structs + target_struct_size; ++t) |
3154 | { | |
c5aa993b | 3155 | if ((*t)->to_can_run && target_can_run (*t)) |
7a292a7a SS |
3156 | { |
3157 | runable = *t; | |
3158 | ++count; | |
3159 | } | |
3160 | } | |
c5aa993b | 3161 | |
7a292a7a SS |
3162 | return (count == 1 ? runable : NULL); |
3163 | } | |
3164 | ||
ed9a39eb JM |
3165 | /* |
3166 | * Find the next target down the stack from the specified target. | |
3167 | */ | |
3168 | ||
3169 | struct target_ops * | |
fba45db2 | 3170 | find_target_beneath (struct target_ops *t) |
ed9a39eb | 3171 | { |
258b763a | 3172 | return t->beneath; |
ed9a39eb JM |
3173 | } |
3174 | ||
c906108c SS |
3175 | \f |
3176 | /* The inferior process has died. Long live the inferior! */ | |
3177 | ||
3178 | void | |
fba45db2 | 3179 | generic_mourn_inferior (void) |
c906108c | 3180 | { |
7f9f62ba | 3181 | ptid_t ptid; |
c906108c | 3182 | |
7f9f62ba | 3183 | ptid = inferior_ptid; |
39f77062 | 3184 | inferior_ptid = null_ptid; |
7f9f62ba PA |
3185 | |
3186 | if (!ptid_equal (ptid, null_ptid)) | |
3187 | { | |
3188 | int pid = ptid_get_pid (ptid); | |
6c95b8df | 3189 | exit_inferior (pid); |
7f9f62ba PA |
3190 | } |
3191 | ||
c906108c SS |
3192 | breakpoint_init_inferior (inf_exited); |
3193 | registers_changed (); | |
3194 | ||
c906108c SS |
3195 | reopen_exec_file (); |
3196 | reinit_frame_cache (); | |
3197 | ||
9a4105ab AC |
3198 | if (deprecated_detach_hook) |
3199 | deprecated_detach_hook (); | |
c906108c SS |
3200 | } |
3201 | \f | |
8807d78b | 3202 | /* Helper function for child_wait and the derivatives of child_wait. |
c906108c SS |
3203 | HOSTSTATUS is the waitstatus from wait() or the equivalent; store our |
3204 | translation of that in OURSTATUS. */ | |
3205 | void | |
fba45db2 | 3206 | store_waitstatus (struct target_waitstatus *ourstatus, int hoststatus) |
c906108c | 3207 | { |
c906108c SS |
3208 | if (WIFEXITED (hoststatus)) |
3209 | { | |
3210 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
3211 | ourstatus->value.integer = WEXITSTATUS (hoststatus); | |
3212 | } | |
3213 | else if (!WIFSTOPPED (hoststatus)) | |
3214 | { | |
3215 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
3216 | ourstatus->value.sig = target_signal_from_host (WTERMSIG (hoststatus)); | |
3217 | } | |
3218 | else | |
3219 | { | |
3220 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
3221 | ourstatus->value.sig = target_signal_from_host (WSTOPSIG (hoststatus)); | |
3222 | } | |
3223 | } | |
3224 | \f | |
fd0a2a6f MK |
3225 | /* Convert a normal process ID to a string. Returns the string in a |
3226 | static buffer. */ | |
c906108c SS |
3227 | |
3228 | char * | |
39f77062 | 3229 | normal_pid_to_str (ptid_t ptid) |
c906108c | 3230 | { |
fd0a2a6f | 3231 | static char buf[32]; |
c906108c | 3232 | |
5fff8fc0 | 3233 | xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid)); |
c906108c SS |
3234 | return buf; |
3235 | } | |
3236 | ||
2c0b251b | 3237 | static char * |
117de6a9 PA |
3238 | dummy_pid_to_str (struct target_ops *ops, ptid_t ptid) |
3239 | { | |
3240 | return normal_pid_to_str (ptid); | |
3241 | } | |
3242 | ||
9b4eba8e HZ |
3243 | /* Error-catcher for target_find_memory_regions. */ |
3244 | static int | |
b8edc417 | 3245 | dummy_find_memory_regions (find_memory_region_ftype ignore1, void *ignore2) |
be4d1333 | 3246 | { |
9b4eba8e | 3247 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3248 | return 0; |
3249 | } | |
3250 | ||
9b4eba8e HZ |
3251 | /* Error-catcher for target_make_corefile_notes. */ |
3252 | static char * | |
3253 | dummy_make_corefile_notes (bfd *ignore1, int *ignore2) | |
be4d1333 | 3254 | { |
9b4eba8e | 3255 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3256 | return NULL; |
3257 | } | |
3258 | ||
6b04bdb7 MS |
3259 | /* Error-catcher for target_get_bookmark. */ |
3260 | static gdb_byte * | |
3261 | dummy_get_bookmark (char *ignore1, int ignore2) | |
3262 | { | |
3263 | tcomplain (); | |
3264 | return NULL; | |
3265 | } | |
3266 | ||
3267 | /* Error-catcher for target_goto_bookmark. */ | |
3268 | static void | |
3269 | dummy_goto_bookmark (gdb_byte *ignore, int from_tty) | |
3270 | { | |
3271 | tcomplain (); | |
3272 | } | |
3273 | ||
c906108c SS |
3274 | /* Set up the handful of non-empty slots needed by the dummy target |
3275 | vector. */ | |
3276 | ||
3277 | static void | |
fba45db2 | 3278 | init_dummy_target (void) |
c906108c SS |
3279 | { |
3280 | dummy_target.to_shortname = "None"; | |
3281 | dummy_target.to_longname = "None"; | |
3282 | dummy_target.to_doc = ""; | |
3283 | dummy_target.to_attach = find_default_attach; | |
136d6dae VP |
3284 | dummy_target.to_detach = |
3285 | (void (*)(struct target_ops *, char *, int))target_ignore; | |
c906108c | 3286 | dummy_target.to_create_inferior = find_default_create_inferior; |
b84876c2 PA |
3287 | dummy_target.to_can_async_p = find_default_can_async_p; |
3288 | dummy_target.to_is_async_p = find_default_is_async_p; | |
9908b566 | 3289 | dummy_target.to_supports_non_stop = find_default_supports_non_stop; |
03583c20 UW |
3290 | dummy_target.to_supports_disable_randomization |
3291 | = find_default_supports_disable_randomization; | |
117de6a9 | 3292 | dummy_target.to_pid_to_str = dummy_pid_to_str; |
c906108c | 3293 | dummy_target.to_stratum = dummy_stratum; |
be4d1333 MS |
3294 | dummy_target.to_find_memory_regions = dummy_find_memory_regions; |
3295 | dummy_target.to_make_corefile_notes = dummy_make_corefile_notes; | |
6b04bdb7 MS |
3296 | dummy_target.to_get_bookmark = dummy_get_bookmark; |
3297 | dummy_target.to_goto_bookmark = dummy_goto_bookmark; | |
0b603eba | 3298 | dummy_target.to_xfer_partial = default_xfer_partial; |
c35b1492 PA |
3299 | dummy_target.to_has_all_memory = (int (*) (struct target_ops *)) return_zero; |
3300 | dummy_target.to_has_memory = (int (*) (struct target_ops *)) return_zero; | |
3301 | dummy_target.to_has_stack = (int (*) (struct target_ops *)) return_zero; | |
3302 | dummy_target.to_has_registers = (int (*) (struct target_ops *)) return_zero; | |
aeaec162 TT |
3303 | dummy_target.to_has_execution |
3304 | = (int (*) (struct target_ops *, ptid_t)) return_zero; | |
7155de5a HZ |
3305 | dummy_target.to_stopped_by_watchpoint = return_zero; |
3306 | dummy_target.to_stopped_data_address = | |
3307 | (int (*) (struct target_ops *, CORE_ADDR *)) return_zero; | |
c906108c SS |
3308 | dummy_target.to_magic = OPS_MAGIC; |
3309 | } | |
c906108c | 3310 | \f |
c906108c | 3311 | static void |
fba45db2 | 3312 | debug_to_open (char *args, int from_tty) |
c906108c SS |
3313 | { |
3314 | debug_target.to_open (args, from_tty); | |
3315 | ||
96baa820 | 3316 | fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty); |
c906108c SS |
3317 | } |
3318 | ||
f1c07ab0 AC |
3319 | void |
3320 | target_close (struct target_ops *targ, int quitting) | |
3321 | { | |
3322 | if (targ->to_xclose != NULL) | |
3323 | targ->to_xclose (targ, quitting); | |
3324 | else if (targ->to_close != NULL) | |
3325 | targ->to_close (quitting); | |
947b8855 PA |
3326 | |
3327 | if (targetdebug) | |
3328 | fprintf_unfiltered (gdb_stdlog, "target_close (%d)\n", quitting); | |
f1c07ab0 AC |
3329 | } |
3330 | ||
136d6dae VP |
3331 | void |
3332 | target_attach (char *args, int from_tty) | |
3333 | { | |
3334 | struct target_ops *t; | |
5d502164 | 3335 | |
136d6dae VP |
3336 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3337 | { | |
3338 | if (t->to_attach != NULL) | |
3339 | { | |
3340 | t->to_attach (t, args, from_tty); | |
947b8855 PA |
3341 | if (targetdebug) |
3342 | fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n", | |
3343 | args, from_tty); | |
136d6dae VP |
3344 | return; |
3345 | } | |
3346 | } | |
3347 | ||
3348 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 3349 | _("could not find a target to attach")); |
136d6dae VP |
3350 | } |
3351 | ||
28439f5e PA |
3352 | int |
3353 | target_thread_alive (ptid_t ptid) | |
c906108c | 3354 | { |
28439f5e | 3355 | struct target_ops *t; |
5d502164 | 3356 | |
28439f5e PA |
3357 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3358 | { | |
3359 | if (t->to_thread_alive != NULL) | |
3360 | { | |
3361 | int retval; | |
c906108c | 3362 | |
28439f5e PA |
3363 | retval = t->to_thread_alive (t, ptid); |
3364 | if (targetdebug) | |
3365 | fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n", | |
3366 | PIDGET (ptid), retval); | |
3367 | ||
3368 | return retval; | |
3369 | } | |
3370 | } | |
3371 | ||
3372 | return 0; | |
3373 | } | |
3374 | ||
3375 | void | |
3376 | target_find_new_threads (void) | |
3377 | { | |
3378 | struct target_ops *t; | |
5d502164 | 3379 | |
28439f5e PA |
3380 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3381 | { | |
3382 | if (t->to_find_new_threads != NULL) | |
3383 | { | |
3384 | t->to_find_new_threads (t); | |
3385 | if (targetdebug) | |
3386 | fprintf_unfiltered (gdb_stdlog, "target_find_new_threads ()\n"); | |
3387 | ||
3388 | return; | |
3389 | } | |
3390 | } | |
c906108c SS |
3391 | } |
3392 | ||
d914c394 SS |
3393 | void |
3394 | target_stop (ptid_t ptid) | |
3395 | { | |
3396 | if (!may_stop) | |
3397 | { | |
3398 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3399 | return; | |
3400 | } | |
3401 | ||
3402 | (*current_target.to_stop) (ptid); | |
3403 | } | |
3404 | ||
c906108c | 3405 | static void |
28439f5e | 3406 | debug_to_post_attach (int pid) |
c906108c | 3407 | { |
28439f5e | 3408 | debug_target.to_post_attach (pid); |
c906108c | 3409 | |
28439f5e | 3410 | fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid); |
c906108c SS |
3411 | } |
3412 | ||
f00150c9 DE |
3413 | /* Return a pretty printed form of target_waitstatus. |
3414 | Space for the result is malloc'd, caller must free. */ | |
c906108c | 3415 | |
f00150c9 DE |
3416 | char * |
3417 | target_waitstatus_to_string (const struct target_waitstatus *ws) | |
3418 | { | |
3419 | const char *kind_str = "status->kind = "; | |
c906108c | 3420 | |
f00150c9 | 3421 | switch (ws->kind) |
c906108c SS |
3422 | { |
3423 | case TARGET_WAITKIND_EXITED: | |
f00150c9 DE |
3424 | return xstrprintf ("%sexited, status = %d", |
3425 | kind_str, ws->value.integer); | |
c906108c | 3426 | case TARGET_WAITKIND_STOPPED: |
f00150c9 DE |
3427 | return xstrprintf ("%sstopped, signal = %s", |
3428 | kind_str, target_signal_to_name (ws->value.sig)); | |
c906108c | 3429 | case TARGET_WAITKIND_SIGNALLED: |
f00150c9 DE |
3430 | return xstrprintf ("%ssignalled, signal = %s", |
3431 | kind_str, target_signal_to_name (ws->value.sig)); | |
c906108c | 3432 | case TARGET_WAITKIND_LOADED: |
f00150c9 | 3433 | return xstrprintf ("%sloaded", kind_str); |
c906108c | 3434 | case TARGET_WAITKIND_FORKED: |
f00150c9 | 3435 | return xstrprintf ("%sforked", kind_str); |
c906108c | 3436 | case TARGET_WAITKIND_VFORKED: |
f00150c9 | 3437 | return xstrprintf ("%svforked", kind_str); |
c906108c | 3438 | case TARGET_WAITKIND_EXECD: |
f00150c9 DE |
3439 | return xstrprintf ("%sexecd", kind_str); |
3440 | case TARGET_WAITKIND_SYSCALL_ENTRY: | |
a96d9b2e | 3441 | return xstrprintf ("%sentered syscall", kind_str); |
f00150c9 | 3442 | case TARGET_WAITKIND_SYSCALL_RETURN: |
a96d9b2e | 3443 | return xstrprintf ("%sexited syscall", kind_str); |
c906108c | 3444 | case TARGET_WAITKIND_SPURIOUS: |
f00150c9 DE |
3445 | return xstrprintf ("%sspurious", kind_str); |
3446 | case TARGET_WAITKIND_IGNORE: | |
3447 | return xstrprintf ("%signore", kind_str); | |
3448 | case TARGET_WAITKIND_NO_HISTORY: | |
3449 | return xstrprintf ("%sno-history", kind_str); | |
0c94aa73 PA |
3450 | case TARGET_WAITKIND_NO_RESUMED: |
3451 | return xstrprintf ("%sno-resumed", kind_str); | |
c906108c | 3452 | default: |
f00150c9 | 3453 | return xstrprintf ("%sunknown???", kind_str); |
c906108c | 3454 | } |
f00150c9 DE |
3455 | } |
3456 | ||
bf0c5130 | 3457 | static void |
56be3814 UW |
3458 | debug_print_register (const char * func, |
3459 | struct regcache *regcache, int regno) | |
bf0c5130 | 3460 | { |
f8d29908 | 3461 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
5d502164 | 3462 | |
bf0c5130 | 3463 | fprintf_unfiltered (gdb_stdlog, "%s ", func); |
f8d29908 | 3464 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) |
f8d29908 UW |
3465 | && gdbarch_register_name (gdbarch, regno) != NULL |
3466 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') | |
3467 | fprintf_unfiltered (gdb_stdlog, "(%s)", | |
3468 | gdbarch_register_name (gdbarch, regno)); | |
bf0c5130 AC |
3469 | else |
3470 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
0ff58721 | 3471 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) |
bf0c5130 | 3472 | { |
e17a4113 | 3473 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
f8d29908 | 3474 | int i, size = register_size (gdbarch, regno); |
d9d9c31f | 3475 | unsigned char buf[MAX_REGISTER_SIZE]; |
5d502164 | 3476 | |
0ff58721 | 3477 | regcache_raw_collect (regcache, regno, buf); |
bf0c5130 | 3478 | fprintf_unfiltered (gdb_stdlog, " = "); |
81c4a259 | 3479 | for (i = 0; i < size; i++) |
bf0c5130 AC |
3480 | { |
3481 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
3482 | } | |
81c4a259 | 3483 | if (size <= sizeof (LONGEST)) |
bf0c5130 | 3484 | { |
e17a4113 | 3485 | ULONGEST val = extract_unsigned_integer (buf, size, byte_order); |
5d502164 | 3486 | |
0b1553bc UW |
3487 | fprintf_unfiltered (gdb_stdlog, " %s %s", |
3488 | core_addr_to_string_nz (val), plongest (val)); | |
bf0c5130 AC |
3489 | } |
3490 | } | |
3491 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
3492 | } | |
3493 | ||
28439f5e PA |
3494 | void |
3495 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 3496 | { |
28439f5e | 3497 | struct target_ops *t; |
5d502164 | 3498 | |
28439f5e PA |
3499 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3500 | { | |
3501 | if (t->to_fetch_registers != NULL) | |
3502 | { | |
3503 | t->to_fetch_registers (t, regcache, regno); | |
3504 | if (targetdebug) | |
3505 | debug_print_register ("target_fetch_registers", regcache, regno); | |
3506 | return; | |
3507 | } | |
3508 | } | |
c906108c SS |
3509 | } |
3510 | ||
28439f5e PA |
3511 | void |
3512 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 3513 | { |
28439f5e | 3514 | struct target_ops *t; |
5d502164 | 3515 | |
d914c394 SS |
3516 | if (!may_write_registers) |
3517 | error (_("Writing to registers is not allowed (regno %d)"), regno); | |
3518 | ||
28439f5e PA |
3519 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3520 | { | |
3521 | if (t->to_store_registers != NULL) | |
3522 | { | |
3523 | t->to_store_registers (t, regcache, regno); | |
3524 | if (targetdebug) | |
3525 | { | |
3526 | debug_print_register ("target_store_registers", regcache, regno); | |
3527 | } | |
3528 | return; | |
3529 | } | |
3530 | } | |
3531 | ||
3532 | noprocess (); | |
c906108c SS |
3533 | } |
3534 | ||
dc146f7c VP |
3535 | int |
3536 | target_core_of_thread (ptid_t ptid) | |
3537 | { | |
3538 | struct target_ops *t; | |
3539 | ||
3540 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3541 | { | |
3542 | if (t->to_core_of_thread != NULL) | |
3543 | { | |
3544 | int retval = t->to_core_of_thread (t, ptid); | |
5d502164 | 3545 | |
dc146f7c | 3546 | if (targetdebug) |
3e43a32a MS |
3547 | fprintf_unfiltered (gdb_stdlog, |
3548 | "target_core_of_thread (%d) = %d\n", | |
dc146f7c VP |
3549 | PIDGET (ptid), retval); |
3550 | return retval; | |
3551 | } | |
3552 | } | |
3553 | ||
3554 | return -1; | |
3555 | } | |
3556 | ||
4a5e7a5b PA |
3557 | int |
3558 | target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3559 | { | |
3560 | struct target_ops *t; | |
3561 | ||
3562 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3563 | { | |
3564 | if (t->to_verify_memory != NULL) | |
3565 | { | |
3566 | int retval = t->to_verify_memory (t, data, memaddr, size); | |
5d502164 | 3567 | |
4a5e7a5b | 3568 | if (targetdebug) |
3e43a32a MS |
3569 | fprintf_unfiltered (gdb_stdlog, |
3570 | "target_verify_memory (%s, %s) = %d\n", | |
4a5e7a5b PA |
3571 | paddress (target_gdbarch, memaddr), |
3572 | pulongest (size), | |
3573 | retval); | |
3574 | return retval; | |
3575 | } | |
3576 | } | |
3577 | ||
3578 | tcomplain (); | |
3579 | } | |
3580 | ||
9c06b0b4 TJB |
3581 | /* The documentation for this function is in its prototype declaration in |
3582 | target.h. */ | |
3583 | ||
3584 | int | |
3585 | target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
3586 | { | |
3587 | struct target_ops *t; | |
3588 | ||
3589 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3590 | if (t->to_insert_mask_watchpoint != NULL) | |
3591 | { | |
3592 | int ret; | |
3593 | ||
3594 | ret = t->to_insert_mask_watchpoint (t, addr, mask, rw); | |
3595 | ||
3596 | if (targetdebug) | |
3597 | fprintf_unfiltered (gdb_stdlog, "\ | |
3598 | target_insert_mask_watchpoint (%s, %s, %d) = %d\n", | |
3599 | core_addr_to_string (addr), | |
3600 | core_addr_to_string (mask), rw, ret); | |
3601 | ||
3602 | return ret; | |
3603 | } | |
3604 | ||
3605 | return 1; | |
3606 | } | |
3607 | ||
3608 | /* The documentation for this function is in its prototype declaration in | |
3609 | target.h. */ | |
3610 | ||
3611 | int | |
3612 | target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, int rw) | |
3613 | { | |
3614 | struct target_ops *t; | |
3615 | ||
3616 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3617 | if (t->to_remove_mask_watchpoint != NULL) | |
3618 | { | |
3619 | int ret; | |
3620 | ||
3621 | ret = t->to_remove_mask_watchpoint (t, addr, mask, rw); | |
3622 | ||
3623 | if (targetdebug) | |
3624 | fprintf_unfiltered (gdb_stdlog, "\ | |
3625 | target_remove_mask_watchpoint (%s, %s, %d) = %d\n", | |
3626 | core_addr_to_string (addr), | |
3627 | core_addr_to_string (mask), rw, ret); | |
3628 | ||
3629 | return ret; | |
3630 | } | |
3631 | ||
3632 | return 1; | |
3633 | } | |
3634 | ||
3635 | /* The documentation for this function is in its prototype declaration | |
3636 | in target.h. */ | |
3637 | ||
3638 | int | |
3639 | target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask) | |
3640 | { | |
3641 | struct target_ops *t; | |
3642 | ||
3643 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3644 | if (t->to_masked_watch_num_registers != NULL) | |
3645 | return t->to_masked_watch_num_registers (t, addr, mask); | |
3646 | ||
3647 | return -1; | |
3648 | } | |
3649 | ||
f1310107 TJB |
3650 | /* The documentation for this function is in its prototype declaration |
3651 | in target.h. */ | |
3652 | ||
3653 | int | |
3654 | target_ranged_break_num_registers (void) | |
3655 | { | |
3656 | struct target_ops *t; | |
3657 | ||
3658 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3659 | if (t->to_ranged_break_num_registers != NULL) | |
3660 | return t->to_ranged_break_num_registers (t); | |
3661 | ||
3662 | return -1; | |
3663 | } | |
3664 | ||
c906108c | 3665 | static void |
316f2060 | 3666 | debug_to_prepare_to_store (struct regcache *regcache) |
c906108c | 3667 | { |
316f2060 | 3668 | debug_target.to_prepare_to_store (regcache); |
c906108c | 3669 | |
96baa820 | 3670 | fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n"); |
c906108c SS |
3671 | } |
3672 | ||
3673 | static int | |
961cb7b5 | 3674 | deprecated_debug_xfer_memory (CORE_ADDR memaddr, bfd_byte *myaddr, int len, |
c8e73a31 AC |
3675 | int write, struct mem_attrib *attrib, |
3676 | struct target_ops *target) | |
c906108c SS |
3677 | { |
3678 | int retval; | |
3679 | ||
c8e73a31 AC |
3680 | retval = debug_target.deprecated_xfer_memory (memaddr, myaddr, len, write, |
3681 | attrib, target); | |
c906108c | 3682 | |
96baa820 | 3683 | fprintf_unfiltered (gdb_stdlog, |
53b71562 | 3684 | "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d", |
5af949e3 UW |
3685 | paddress (target_gdbarch, memaddr), len, |
3686 | write ? "write" : "read", retval); | |
c906108c | 3687 | |
c906108c SS |
3688 | if (retval > 0) |
3689 | { | |
3690 | int i; | |
3691 | ||
96baa820 | 3692 | fputs_unfiltered (", bytes =", gdb_stdlog); |
c906108c SS |
3693 | for (i = 0; i < retval; i++) |
3694 | { | |
53b71562 | 3695 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
333dabeb DJ |
3696 | { |
3697 | if (targetdebug < 2 && i > 0) | |
3698 | { | |
3699 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
3700 | break; | |
3701 | } | |
3702 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
3703 | } | |
2bc416ba | 3704 | |
96baa820 | 3705 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
c906108c SS |
3706 | } |
3707 | } | |
3708 | ||
96baa820 | 3709 | fputc_unfiltered ('\n', gdb_stdlog); |
c906108c SS |
3710 | |
3711 | return retval; | |
3712 | } | |
3713 | ||
3714 | static void | |
fba45db2 | 3715 | debug_to_files_info (struct target_ops *target) |
c906108c SS |
3716 | { |
3717 | debug_target.to_files_info (target); | |
3718 | ||
96baa820 | 3719 | fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n"); |
c906108c SS |
3720 | } |
3721 | ||
3722 | static int | |
a6d9a66e UW |
3723 | debug_to_insert_breakpoint (struct gdbarch *gdbarch, |
3724 | struct bp_target_info *bp_tgt) | |
c906108c SS |
3725 | { |
3726 | int retval; | |
3727 | ||
a6d9a66e | 3728 | retval = debug_target.to_insert_breakpoint (gdbarch, bp_tgt); |
c906108c | 3729 | |
96baa820 | 3730 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
3731 | "target_insert_breakpoint (%s, xxx) = %ld\n", |
3732 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 3733 | (unsigned long) retval); |
c906108c SS |
3734 | return retval; |
3735 | } | |
3736 | ||
3737 | static int | |
a6d9a66e UW |
3738 | debug_to_remove_breakpoint (struct gdbarch *gdbarch, |
3739 | struct bp_target_info *bp_tgt) | |
c906108c SS |
3740 | { |
3741 | int retval; | |
3742 | ||
a6d9a66e | 3743 | retval = debug_target.to_remove_breakpoint (gdbarch, bp_tgt); |
c906108c | 3744 | |
96baa820 | 3745 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
3746 | "target_remove_breakpoint (%s, xxx) = %ld\n", |
3747 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 3748 | (unsigned long) retval); |
c906108c SS |
3749 | return retval; |
3750 | } | |
3751 | ||
ccaa32c7 GS |
3752 | static int |
3753 | debug_to_can_use_hw_breakpoint (int type, int cnt, int from_tty) | |
3754 | { | |
3755 | int retval; | |
3756 | ||
3757 | retval = debug_target.to_can_use_hw_breakpoint (type, cnt, from_tty); | |
3758 | ||
3759 | fprintf_unfiltered (gdb_stdlog, | |
3760 | "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n", | |
3761 | (unsigned long) type, | |
3762 | (unsigned long) cnt, | |
3763 | (unsigned long) from_tty, | |
3764 | (unsigned long) retval); | |
3765 | return retval; | |
3766 | } | |
3767 | ||
e0d24f8d WZ |
3768 | static int |
3769 | debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
3770 | { | |
3771 | CORE_ADDR retval; | |
3772 | ||
3773 | retval = debug_target.to_region_ok_for_hw_watchpoint (addr, len); | |
3774 | ||
3775 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3776 | "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n", |
3777 | core_addr_to_string (addr), (unsigned long) len, | |
3778 | core_addr_to_string (retval)); | |
e0d24f8d WZ |
3779 | return retval; |
3780 | } | |
3781 | ||
0cf6dd15 TJB |
3782 | static int |
3783 | debug_to_can_accel_watchpoint_condition (CORE_ADDR addr, int len, int rw, | |
3784 | struct expression *cond) | |
3785 | { | |
3786 | int retval; | |
3787 | ||
3e43a32a MS |
3788 | retval = debug_target.to_can_accel_watchpoint_condition (addr, len, |
3789 | rw, cond); | |
0cf6dd15 TJB |
3790 | |
3791 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
3792 | "target_can_accel_watchpoint_condition " |
3793 | "(%s, %d, %d, %s) = %ld\n", | |
bd91e7ae OS |
3794 | core_addr_to_string (addr), len, rw, |
3795 | host_address_to_string (cond), (unsigned long) retval); | |
0cf6dd15 TJB |
3796 | return retval; |
3797 | } | |
3798 | ||
ccaa32c7 GS |
3799 | static int |
3800 | debug_to_stopped_by_watchpoint (void) | |
3801 | { | |
3802 | int retval; | |
3803 | ||
3804 | retval = debug_target.to_stopped_by_watchpoint (); | |
3805 | ||
3806 | fprintf_unfiltered (gdb_stdlog, | |
d92524f1 | 3807 | "target_stopped_by_watchpoint () = %ld\n", |
ccaa32c7 GS |
3808 | (unsigned long) retval); |
3809 | return retval; | |
3810 | } | |
3811 | ||
4aa7a7f5 JJ |
3812 | static int |
3813 | debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr) | |
ccaa32c7 | 3814 | { |
4aa7a7f5 | 3815 | int retval; |
ccaa32c7 | 3816 | |
4aa7a7f5 | 3817 | retval = debug_target.to_stopped_data_address (target, addr); |
ccaa32c7 GS |
3818 | |
3819 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3820 | "target_stopped_data_address ([%s]) = %ld\n", |
3821 | core_addr_to_string (*addr), | |
4aa7a7f5 | 3822 | (unsigned long)retval); |
ccaa32c7 GS |
3823 | return retval; |
3824 | } | |
3825 | ||
5009afc5 AS |
3826 | static int |
3827 | debug_to_watchpoint_addr_within_range (struct target_ops *target, | |
3828 | CORE_ADDR addr, | |
3829 | CORE_ADDR start, int length) | |
3830 | { | |
3831 | int retval; | |
3832 | ||
3833 | retval = debug_target.to_watchpoint_addr_within_range (target, addr, | |
3834 | start, length); | |
3835 | ||
3836 | fprintf_filtered (gdb_stdlog, | |
bd91e7ae OS |
3837 | "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n", |
3838 | core_addr_to_string (addr), core_addr_to_string (start), | |
3839 | length, retval); | |
5009afc5 AS |
3840 | return retval; |
3841 | } | |
3842 | ||
ccaa32c7 | 3843 | static int |
a6d9a66e UW |
3844 | debug_to_insert_hw_breakpoint (struct gdbarch *gdbarch, |
3845 | struct bp_target_info *bp_tgt) | |
ccaa32c7 GS |
3846 | { |
3847 | int retval; | |
3848 | ||
a6d9a66e | 3849 | retval = debug_target.to_insert_hw_breakpoint (gdbarch, bp_tgt); |
ccaa32c7 GS |
3850 | |
3851 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3852 | "target_insert_hw_breakpoint (%s, xxx) = %ld\n", |
3853 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
3854 | (unsigned long) retval); |
3855 | return retval; | |
3856 | } | |
3857 | ||
3858 | static int | |
a6d9a66e UW |
3859 | debug_to_remove_hw_breakpoint (struct gdbarch *gdbarch, |
3860 | struct bp_target_info *bp_tgt) | |
ccaa32c7 GS |
3861 | { |
3862 | int retval; | |
3863 | ||
a6d9a66e | 3864 | retval = debug_target.to_remove_hw_breakpoint (gdbarch, bp_tgt); |
ccaa32c7 GS |
3865 | |
3866 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3867 | "target_remove_hw_breakpoint (%s, xxx) = %ld\n", |
3868 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
3869 | (unsigned long) retval); |
3870 | return retval; | |
3871 | } | |
3872 | ||
3873 | static int | |
0cf6dd15 TJB |
3874 | debug_to_insert_watchpoint (CORE_ADDR addr, int len, int type, |
3875 | struct expression *cond) | |
ccaa32c7 GS |
3876 | { |
3877 | int retval; | |
3878 | ||
0cf6dd15 | 3879 | retval = debug_target.to_insert_watchpoint (addr, len, type, cond); |
ccaa32c7 GS |
3880 | |
3881 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3882 | "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n", |
3883 | core_addr_to_string (addr), len, type, | |
3884 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
3885 | return retval; |
3886 | } | |
3887 | ||
3888 | static int | |
0cf6dd15 TJB |
3889 | debug_to_remove_watchpoint (CORE_ADDR addr, int len, int type, |
3890 | struct expression *cond) | |
ccaa32c7 GS |
3891 | { |
3892 | int retval; | |
3893 | ||
0cf6dd15 | 3894 | retval = debug_target.to_remove_watchpoint (addr, len, type, cond); |
ccaa32c7 GS |
3895 | |
3896 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3897 | "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n", |
3898 | core_addr_to_string (addr), len, type, | |
3899 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
3900 | return retval; |
3901 | } | |
3902 | ||
c906108c | 3903 | static void |
fba45db2 | 3904 | debug_to_terminal_init (void) |
c906108c SS |
3905 | { |
3906 | debug_target.to_terminal_init (); | |
3907 | ||
96baa820 | 3908 | fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n"); |
c906108c SS |
3909 | } |
3910 | ||
3911 | static void | |
fba45db2 | 3912 | debug_to_terminal_inferior (void) |
c906108c SS |
3913 | { |
3914 | debug_target.to_terminal_inferior (); | |
3915 | ||
96baa820 | 3916 | fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n"); |
c906108c SS |
3917 | } |
3918 | ||
3919 | static void | |
fba45db2 | 3920 | debug_to_terminal_ours_for_output (void) |
c906108c SS |
3921 | { |
3922 | debug_target.to_terminal_ours_for_output (); | |
3923 | ||
96baa820 | 3924 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n"); |
c906108c SS |
3925 | } |
3926 | ||
3927 | static void | |
fba45db2 | 3928 | debug_to_terminal_ours (void) |
c906108c SS |
3929 | { |
3930 | debug_target.to_terminal_ours (); | |
3931 | ||
96baa820 | 3932 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n"); |
c906108c SS |
3933 | } |
3934 | ||
a790ad35 SC |
3935 | static void |
3936 | debug_to_terminal_save_ours (void) | |
3937 | { | |
3938 | debug_target.to_terminal_save_ours (); | |
3939 | ||
3940 | fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n"); | |
3941 | } | |
3942 | ||
c906108c | 3943 | static void |
fba45db2 | 3944 | debug_to_terminal_info (char *arg, int from_tty) |
c906108c SS |
3945 | { |
3946 | debug_target.to_terminal_info (arg, from_tty); | |
3947 | ||
96baa820 | 3948 | fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg, |
c906108c SS |
3949 | from_tty); |
3950 | } | |
3951 | ||
c906108c | 3952 | static void |
fba45db2 | 3953 | debug_to_load (char *args, int from_tty) |
c906108c SS |
3954 | { |
3955 | debug_target.to_load (args, from_tty); | |
3956 | ||
96baa820 | 3957 | fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty); |
c906108c SS |
3958 | } |
3959 | ||
c906108c | 3960 | static void |
39f77062 | 3961 | debug_to_post_startup_inferior (ptid_t ptid) |
c906108c | 3962 | { |
39f77062 | 3963 | debug_target.to_post_startup_inferior (ptid); |
c906108c | 3964 | |
96baa820 | 3965 | fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n", |
39f77062 | 3966 | PIDGET (ptid)); |
c906108c SS |
3967 | } |
3968 | ||
77b06cd7 | 3969 | static int |
fba45db2 | 3970 | debug_to_insert_fork_catchpoint (int pid) |
c906108c | 3971 | { |
77b06cd7 TJB |
3972 | int retval; |
3973 | ||
3974 | retval = debug_target.to_insert_fork_catchpoint (pid); | |
3975 | ||
3976 | fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d) = %d\n", | |
3977 | pid, retval); | |
c906108c | 3978 | |
77b06cd7 | 3979 | return retval; |
c906108c SS |
3980 | } |
3981 | ||
3982 | static int | |
fba45db2 | 3983 | debug_to_remove_fork_catchpoint (int pid) |
c906108c | 3984 | { |
c5aa993b | 3985 | int retval; |
c906108c SS |
3986 | |
3987 | retval = debug_target.to_remove_fork_catchpoint (pid); | |
3988 | ||
96baa820 | 3989 | fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n", |
c5aa993b | 3990 | pid, retval); |
c906108c SS |
3991 | |
3992 | return retval; | |
3993 | } | |
3994 | ||
77b06cd7 | 3995 | static int |
fba45db2 | 3996 | debug_to_insert_vfork_catchpoint (int pid) |
c906108c | 3997 | { |
77b06cd7 TJB |
3998 | int retval; |
3999 | ||
4000 | retval = debug_target.to_insert_vfork_catchpoint (pid); | |
c906108c | 4001 | |
77b06cd7 TJB |
4002 | fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d) = %d\n", |
4003 | pid, retval); | |
4004 | ||
4005 | return retval; | |
c906108c SS |
4006 | } |
4007 | ||
4008 | static int | |
fba45db2 | 4009 | debug_to_remove_vfork_catchpoint (int pid) |
c906108c | 4010 | { |
c5aa993b | 4011 | int retval; |
c906108c SS |
4012 | |
4013 | retval = debug_target.to_remove_vfork_catchpoint (pid); | |
4014 | ||
96baa820 | 4015 | fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n", |
c5aa993b | 4016 | pid, retval); |
c906108c SS |
4017 | |
4018 | return retval; | |
4019 | } | |
4020 | ||
77b06cd7 | 4021 | static int |
fba45db2 | 4022 | debug_to_insert_exec_catchpoint (int pid) |
c906108c | 4023 | { |
77b06cd7 TJB |
4024 | int retval; |
4025 | ||
4026 | retval = debug_target.to_insert_exec_catchpoint (pid); | |
c906108c | 4027 | |
77b06cd7 TJB |
4028 | fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d) = %d\n", |
4029 | pid, retval); | |
4030 | ||
4031 | return retval; | |
c906108c SS |
4032 | } |
4033 | ||
4034 | static int | |
fba45db2 | 4035 | debug_to_remove_exec_catchpoint (int pid) |
c906108c | 4036 | { |
c5aa993b | 4037 | int retval; |
c906108c SS |
4038 | |
4039 | retval = debug_target.to_remove_exec_catchpoint (pid); | |
4040 | ||
96baa820 | 4041 | fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n", |
c5aa993b | 4042 | pid, retval); |
c906108c SS |
4043 | |
4044 | return retval; | |
4045 | } | |
4046 | ||
c906108c | 4047 | static int |
fba45db2 | 4048 | debug_to_has_exited (int pid, int wait_status, int *exit_status) |
c906108c | 4049 | { |
c5aa993b | 4050 | int has_exited; |
c906108c SS |
4051 | |
4052 | has_exited = debug_target.to_has_exited (pid, wait_status, exit_status); | |
4053 | ||
96baa820 | 4054 | fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n", |
c5aa993b | 4055 | pid, wait_status, *exit_status, has_exited); |
c906108c SS |
4056 | |
4057 | return has_exited; | |
4058 | } | |
4059 | ||
c906108c | 4060 | static int |
fba45db2 | 4061 | debug_to_can_run (void) |
c906108c SS |
4062 | { |
4063 | int retval; | |
4064 | ||
4065 | retval = debug_target.to_can_run (); | |
4066 | ||
96baa820 | 4067 | fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval); |
c906108c SS |
4068 | |
4069 | return retval; | |
4070 | } | |
4071 | ||
c2250ad1 UW |
4072 | static struct gdbarch * |
4073 | debug_to_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
4074 | { | |
4075 | struct gdbarch *retval; | |
4076 | ||
4077 | retval = debug_target.to_thread_architecture (ops, ptid); | |
4078 | ||
3e43a32a MS |
4079 | fprintf_unfiltered (gdb_stdlog, |
4080 | "target_thread_architecture (%s) = %s [%s]\n", | |
4081 | target_pid_to_str (ptid), | |
4082 | host_address_to_string (retval), | |
c2250ad1 UW |
4083 | gdbarch_bfd_arch_info (retval)->printable_name); |
4084 | return retval; | |
4085 | } | |
4086 | ||
c906108c | 4087 | static void |
94cc34af | 4088 | debug_to_stop (ptid_t ptid) |
c906108c | 4089 | { |
94cc34af | 4090 | debug_target.to_stop (ptid); |
c906108c | 4091 | |
94cc34af PA |
4092 | fprintf_unfiltered (gdb_stdlog, "target_stop (%s)\n", |
4093 | target_pid_to_str (ptid)); | |
c906108c SS |
4094 | } |
4095 | ||
96baa820 JM |
4096 | static void |
4097 | debug_to_rcmd (char *command, | |
d9fcf2fb | 4098 | struct ui_file *outbuf) |
96baa820 JM |
4099 | { |
4100 | debug_target.to_rcmd (command, outbuf); | |
4101 | fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command); | |
4102 | } | |
4103 | ||
c906108c | 4104 | static char * |
fba45db2 | 4105 | debug_to_pid_to_exec_file (int pid) |
c906108c | 4106 | { |
c5aa993b | 4107 | char *exec_file; |
c906108c SS |
4108 | |
4109 | exec_file = debug_target.to_pid_to_exec_file (pid); | |
4110 | ||
96baa820 | 4111 | fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n", |
c5aa993b | 4112 | pid, exec_file); |
c906108c SS |
4113 | |
4114 | return exec_file; | |
4115 | } | |
4116 | ||
c906108c | 4117 | static void |
fba45db2 | 4118 | setup_target_debug (void) |
c906108c SS |
4119 | { |
4120 | memcpy (&debug_target, ¤t_target, sizeof debug_target); | |
4121 | ||
4122 | current_target.to_open = debug_to_open; | |
c906108c | 4123 | current_target.to_post_attach = debug_to_post_attach; |
c906108c | 4124 | current_target.to_prepare_to_store = debug_to_prepare_to_store; |
c8e73a31 | 4125 | current_target.deprecated_xfer_memory = deprecated_debug_xfer_memory; |
c906108c SS |
4126 | current_target.to_files_info = debug_to_files_info; |
4127 | current_target.to_insert_breakpoint = debug_to_insert_breakpoint; | |
4128 | current_target.to_remove_breakpoint = debug_to_remove_breakpoint; | |
ccaa32c7 GS |
4129 | current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint; |
4130 | current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint; | |
4131 | current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint; | |
4132 | current_target.to_insert_watchpoint = debug_to_insert_watchpoint; | |
4133 | current_target.to_remove_watchpoint = debug_to_remove_watchpoint; | |
4134 | current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint; | |
4135 | current_target.to_stopped_data_address = debug_to_stopped_data_address; | |
3e43a32a MS |
4136 | current_target.to_watchpoint_addr_within_range |
4137 | = debug_to_watchpoint_addr_within_range; | |
4138 | current_target.to_region_ok_for_hw_watchpoint | |
4139 | = debug_to_region_ok_for_hw_watchpoint; | |
4140 | current_target.to_can_accel_watchpoint_condition | |
4141 | = debug_to_can_accel_watchpoint_condition; | |
c906108c SS |
4142 | current_target.to_terminal_init = debug_to_terminal_init; |
4143 | current_target.to_terminal_inferior = debug_to_terminal_inferior; | |
3e43a32a MS |
4144 | current_target.to_terminal_ours_for_output |
4145 | = debug_to_terminal_ours_for_output; | |
c906108c | 4146 | current_target.to_terminal_ours = debug_to_terminal_ours; |
a790ad35 | 4147 | current_target.to_terminal_save_ours = debug_to_terminal_save_ours; |
c906108c | 4148 | current_target.to_terminal_info = debug_to_terminal_info; |
c906108c | 4149 | current_target.to_load = debug_to_load; |
c906108c | 4150 | current_target.to_post_startup_inferior = debug_to_post_startup_inferior; |
c906108c SS |
4151 | current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint; |
4152 | current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint; | |
4153 | current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint; | |
4154 | current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint; | |
c906108c SS |
4155 | current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint; |
4156 | current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint; | |
c906108c | 4157 | current_target.to_has_exited = debug_to_has_exited; |
c906108c | 4158 | current_target.to_can_run = debug_to_can_run; |
c906108c | 4159 | current_target.to_stop = debug_to_stop; |
96baa820 | 4160 | current_target.to_rcmd = debug_to_rcmd; |
c906108c | 4161 | current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file; |
c2250ad1 | 4162 | current_target.to_thread_architecture = debug_to_thread_architecture; |
c906108c | 4163 | } |
c906108c | 4164 | \f |
c5aa993b JM |
4165 | |
4166 | static char targ_desc[] = | |
3e43a32a MS |
4167 | "Names of targets and files being debugged.\nShows the entire \ |
4168 | stack of targets currently in use (including the exec-file,\n\ | |
c906108c SS |
4169 | core-file, and process, if any), as well as the symbol file name."; |
4170 | ||
96baa820 JM |
4171 | static void |
4172 | do_monitor_command (char *cmd, | |
4173 | int from_tty) | |
4174 | { | |
2b5fe715 AC |
4175 | if ((current_target.to_rcmd |
4176 | == (void (*) (char *, struct ui_file *)) tcomplain) | |
96baa820 | 4177 | || (current_target.to_rcmd == debug_to_rcmd |
2b5fe715 AC |
4178 | && (debug_target.to_rcmd |
4179 | == (void (*) (char *, struct ui_file *)) tcomplain))) | |
8a3fe4f8 | 4180 | error (_("\"monitor\" command not supported by this target.")); |
96baa820 JM |
4181 | target_rcmd (cmd, gdb_stdtarg); |
4182 | } | |
4183 | ||
87680a14 JB |
4184 | /* Print the name of each layers of our target stack. */ |
4185 | ||
4186 | static void | |
4187 | maintenance_print_target_stack (char *cmd, int from_tty) | |
4188 | { | |
4189 | struct target_ops *t; | |
4190 | ||
4191 | printf_filtered (_("The current target stack is:\n")); | |
4192 | ||
4193 | for (t = target_stack; t != NULL; t = t->beneath) | |
4194 | { | |
4195 | printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname); | |
4196 | } | |
4197 | } | |
4198 | ||
c6ebd6cf VP |
4199 | /* Controls if async mode is permitted. */ |
4200 | int target_async_permitted = 0; | |
4201 | ||
4202 | /* The set command writes to this variable. If the inferior is | |
4203 | executing, linux_nat_async_permitted is *not* updated. */ | |
4204 | static int target_async_permitted_1 = 0; | |
4205 | ||
4206 | static void | |
4207 | set_maintenance_target_async_permitted (char *args, int from_tty, | |
4208 | struct cmd_list_element *c) | |
4209 | { | |
c35b1492 | 4210 | if (have_live_inferiors ()) |
c6ebd6cf VP |
4211 | { |
4212 | target_async_permitted_1 = target_async_permitted; | |
4213 | error (_("Cannot change this setting while the inferior is running.")); | |
4214 | } | |
4215 | ||
4216 | target_async_permitted = target_async_permitted_1; | |
4217 | } | |
4218 | ||
4219 | static void | |
4220 | show_maintenance_target_async_permitted (struct ui_file *file, int from_tty, | |
4221 | struct cmd_list_element *c, | |
4222 | const char *value) | |
4223 | { | |
3e43a32a MS |
4224 | fprintf_filtered (file, |
4225 | _("Controlling the inferior in " | |
4226 | "asynchronous mode is %s.\n"), value); | |
c6ebd6cf VP |
4227 | } |
4228 | ||
d914c394 SS |
4229 | /* Temporary copies of permission settings. */ |
4230 | ||
4231 | static int may_write_registers_1 = 1; | |
4232 | static int may_write_memory_1 = 1; | |
4233 | static int may_insert_breakpoints_1 = 1; | |
4234 | static int may_insert_tracepoints_1 = 1; | |
4235 | static int may_insert_fast_tracepoints_1 = 1; | |
4236 | static int may_stop_1 = 1; | |
4237 | ||
4238 | /* Make the user-set values match the real values again. */ | |
4239 | ||
4240 | void | |
4241 | update_target_permissions (void) | |
4242 | { | |
4243 | may_write_registers_1 = may_write_registers; | |
4244 | may_write_memory_1 = may_write_memory; | |
4245 | may_insert_breakpoints_1 = may_insert_breakpoints; | |
4246 | may_insert_tracepoints_1 = may_insert_tracepoints; | |
4247 | may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints; | |
4248 | may_stop_1 = may_stop; | |
4249 | } | |
4250 | ||
4251 | /* The one function handles (most of) the permission flags in the same | |
4252 | way. */ | |
4253 | ||
4254 | static void | |
4255 | set_target_permissions (char *args, int from_tty, | |
4256 | struct cmd_list_element *c) | |
4257 | { | |
4258 | if (target_has_execution) | |
4259 | { | |
4260 | update_target_permissions (); | |
4261 | error (_("Cannot change this setting while the inferior is running.")); | |
4262 | } | |
4263 | ||
4264 | /* Make the real values match the user-changed values. */ | |
4265 | may_write_registers = may_write_registers_1; | |
4266 | may_insert_breakpoints = may_insert_breakpoints_1; | |
4267 | may_insert_tracepoints = may_insert_tracepoints_1; | |
4268 | may_insert_fast_tracepoints = may_insert_fast_tracepoints_1; | |
4269 | may_stop = may_stop_1; | |
4270 | update_observer_mode (); | |
4271 | } | |
4272 | ||
4273 | /* Set memory write permission independently of observer mode. */ | |
4274 | ||
4275 | static void | |
4276 | set_write_memory_permission (char *args, int from_tty, | |
4277 | struct cmd_list_element *c) | |
4278 | { | |
4279 | /* Make the real values match the user-changed values. */ | |
4280 | may_write_memory = may_write_memory_1; | |
4281 | update_observer_mode (); | |
4282 | } | |
4283 | ||
4284 | ||
c906108c | 4285 | void |
fba45db2 | 4286 | initialize_targets (void) |
c906108c SS |
4287 | { |
4288 | init_dummy_target (); | |
4289 | push_target (&dummy_target); | |
4290 | ||
4291 | add_info ("target", target_info, targ_desc); | |
4292 | add_info ("files", target_info, targ_desc); | |
4293 | ||
85c07804 AC |
4294 | add_setshow_zinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
4295 | Set target debugging."), _("\ | |
4296 | Show target debugging."), _("\ | |
333dabeb DJ |
4297 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
4298 | verbose. Changes do not take effect until the next \"run\" or \"target\"\n\ | |
85c07804 AC |
4299 | command."), |
4300 | NULL, | |
920d2a44 | 4301 | show_targetdebug, |
85c07804 | 4302 | &setdebuglist, &showdebuglist); |
3a11626d | 4303 | |
2bc416ba | 4304 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
4305 | &trust_readonly, _("\ |
4306 | Set mode for reading from readonly sections."), _("\ | |
4307 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
4308 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
4309 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 4310 | result in significant performance improvement for remote targets."), |
2c5b56ce | 4311 | NULL, |
920d2a44 | 4312 | show_trust_readonly, |
e707bbc2 | 4313 | &setlist, &showlist); |
96baa820 JM |
4314 | |
4315 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 4316 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 4317 | |
87680a14 JB |
4318 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
4319 | _("Print the name of each layer of the internal target stack."), | |
4320 | &maintenanceprintlist); | |
4321 | ||
c6ebd6cf VP |
4322 | add_setshow_boolean_cmd ("target-async", no_class, |
4323 | &target_async_permitted_1, _("\ | |
4324 | Set whether gdb controls the inferior in asynchronous mode."), _("\ | |
4325 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
4326 | Tells gdb whether to control the inferior in asynchronous mode."), | |
4327 | set_maintenance_target_async_permitted, | |
4328 | show_maintenance_target_async_permitted, | |
4329 | &setlist, | |
4330 | &showlist); | |
4331 | ||
4e5d721f | 4332 | add_setshow_boolean_cmd ("stack-cache", class_support, |
9cf1b572 | 4333 | &stack_cache_enabled_p_1, _("\ |
4e5d721f DE |
4334 | Set cache use for stack access."), _("\ |
4335 | Show cache use for stack access."), _("\ | |
4336 | When on, use the data cache for all stack access, regardless of any\n\ | |
4337 | configured memory regions. This improves remote performance significantly.\n\ | |
4338 | By default, caching for stack access is on."), | |
4339 | set_stack_cache_enabled_p, | |
4340 | show_stack_cache_enabled_p, | |
4341 | &setlist, &showlist); | |
4342 | ||
d914c394 SS |
4343 | add_setshow_boolean_cmd ("may-write-registers", class_support, |
4344 | &may_write_registers_1, _("\ | |
4345 | Set permission to write into registers."), _("\ | |
4346 | Show permission to write into registers."), _("\ | |
4347 | When this permission is on, GDB may write into the target's registers.\n\ | |
4348 | Otherwise, any sort of write attempt will result in an error."), | |
4349 | set_target_permissions, NULL, | |
4350 | &setlist, &showlist); | |
4351 | ||
4352 | add_setshow_boolean_cmd ("may-write-memory", class_support, | |
4353 | &may_write_memory_1, _("\ | |
4354 | Set permission to write into target memory."), _("\ | |
4355 | Show permission to write into target memory."), _("\ | |
4356 | When this permission is on, GDB may write into the target's memory.\n\ | |
4357 | Otherwise, any sort of write attempt will result in an error."), | |
4358 | set_write_memory_permission, NULL, | |
4359 | &setlist, &showlist); | |
4360 | ||
4361 | add_setshow_boolean_cmd ("may-insert-breakpoints", class_support, | |
4362 | &may_insert_breakpoints_1, _("\ | |
4363 | Set permission to insert breakpoints in the target."), _("\ | |
4364 | Show permission to insert breakpoints in the target."), _("\ | |
4365 | When this permission is on, GDB may insert breakpoints in the program.\n\ | |
4366 | Otherwise, any sort of insertion attempt will result in an error."), | |
4367 | set_target_permissions, NULL, | |
4368 | &setlist, &showlist); | |
4369 | ||
4370 | add_setshow_boolean_cmd ("may-insert-tracepoints", class_support, | |
4371 | &may_insert_tracepoints_1, _("\ | |
4372 | Set permission to insert tracepoints in the target."), _("\ | |
4373 | Show permission to insert tracepoints in the target."), _("\ | |
4374 | When this permission is on, GDB may insert tracepoints in the program.\n\ | |
4375 | Otherwise, any sort of insertion attempt will result in an error."), | |
4376 | set_target_permissions, NULL, | |
4377 | &setlist, &showlist); | |
4378 | ||
4379 | add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support, | |
4380 | &may_insert_fast_tracepoints_1, _("\ | |
4381 | Set permission to insert fast tracepoints in the target."), _("\ | |
4382 | Show permission to insert fast tracepoints in the target."), _("\ | |
4383 | When this permission is on, GDB may insert fast tracepoints.\n\ | |
4384 | Otherwise, any sort of insertion attempt will result in an error."), | |
4385 | set_target_permissions, NULL, | |
4386 | &setlist, &showlist); | |
4387 | ||
4388 | add_setshow_boolean_cmd ("may-interrupt", class_support, | |
4389 | &may_stop_1, _("\ | |
4390 | Set permission to interrupt or signal the target."), _("\ | |
4391 | Show permission to interrupt or signal the target."), _("\ | |
4392 | When this permission is on, GDB may interrupt/stop the target's execution.\n\ | |
4393 | Otherwise, any attempt to interrupt or stop will be ignored."), | |
4394 | set_target_permissions, NULL, | |
4395 | &setlist, &showlist); | |
4396 | ||
4397 | ||
8add0441 | 4398 | target_dcache = dcache_init (); |
c906108c | 4399 | } |