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