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 | ||
a14ed312 | 57 | static int nosymbol (char *, CORE_ADDR *); |
c906108c | 58 | |
c25c4a8b | 59 | static void tcomplain (void) ATTRIBUTE_NORETURN; |
c906108c | 60 | |
a14ed312 | 61 | static int nomemory (CORE_ADDR, char *, int, int, struct target_ops *); |
c906108c | 62 | |
a14ed312 | 63 | static int return_zero (void); |
c906108c | 64 | |
a14ed312 | 65 | static int return_one (void); |
c906108c | 66 | |
ccaa32c7 GS |
67 | static int return_minus_one (void); |
68 | ||
a14ed312 | 69 | void target_ignore (void); |
c906108c | 70 | |
a14ed312 | 71 | static void target_command (char *, int); |
c906108c | 72 | |
a14ed312 | 73 | static struct target_ops *find_default_run_target (char *); |
c906108c | 74 | |
4b8a223f | 75 | static LONGEST default_xfer_partial (struct target_ops *ops, |
0088c768 | 76 | enum target_object object, |
1b0ba102 AC |
77 | const char *annex, gdb_byte *readbuf, |
78 | const gdb_byte *writebuf, | |
8aa91c1e | 79 | ULONGEST offset, LONGEST len); |
0088c768 | 80 | |
cf7a04e8 DJ |
81 | static LONGEST current_xfer_partial (struct target_ops *ops, |
82 | enum target_object object, | |
83 | const char *annex, gdb_byte *readbuf, | |
84 | const gdb_byte *writebuf, | |
85 | ULONGEST offset, LONGEST len); | |
c906108c | 86 | |
cf7a04e8 DJ |
87 | static LONGEST target_xfer_partial (struct target_ops *ops, |
88 | enum target_object object, | |
89 | const char *annex, | |
90 | void *readbuf, const void *writebuf, | |
91 | ULONGEST offset, LONGEST len); | |
c906108c | 92 | |
c2250ad1 UW |
93 | static struct gdbarch *default_thread_architecture (struct target_ops *ops, |
94 | ptid_t ptid); | |
95 | ||
a14ed312 | 96 | static void init_dummy_target (void); |
c906108c | 97 | |
aa869812 AC |
98 | static struct target_ops debug_target; |
99 | ||
a14ed312 | 100 | static void debug_to_open (char *, int); |
c906108c | 101 | |
316f2060 | 102 | static void debug_to_prepare_to_store (struct regcache *); |
c906108c | 103 | |
a14ed312 | 104 | static void debug_to_files_info (struct target_ops *); |
c906108c | 105 | |
a6d9a66e UW |
106 | static int debug_to_insert_breakpoint (struct gdbarch *, |
107 | struct bp_target_info *); | |
c906108c | 108 | |
a6d9a66e UW |
109 | static int debug_to_remove_breakpoint (struct gdbarch *, |
110 | struct bp_target_info *); | |
c906108c | 111 | |
ccaa32c7 GS |
112 | static int debug_to_can_use_hw_breakpoint (int, int, int); |
113 | ||
a6d9a66e UW |
114 | static int debug_to_insert_hw_breakpoint (struct gdbarch *, |
115 | struct bp_target_info *); | |
ccaa32c7 | 116 | |
a6d9a66e UW |
117 | static int debug_to_remove_hw_breakpoint (struct gdbarch *, |
118 | struct bp_target_info *); | |
ccaa32c7 | 119 | |
0cf6dd15 TJB |
120 | static int debug_to_insert_watchpoint (CORE_ADDR, int, int, |
121 | struct expression *); | |
ccaa32c7 | 122 | |
0cf6dd15 TJB |
123 | static int debug_to_remove_watchpoint (CORE_ADDR, int, int, |
124 | struct expression *); | |
ccaa32c7 GS |
125 | |
126 | static int debug_to_stopped_by_watchpoint (void); | |
127 | ||
4aa7a7f5 | 128 | static int debug_to_stopped_data_address (struct target_ops *, CORE_ADDR *); |
ccaa32c7 | 129 | |
5009afc5 AS |
130 | static int debug_to_watchpoint_addr_within_range (struct target_ops *, |
131 | CORE_ADDR, CORE_ADDR, int); | |
132 | ||
e0d24f8d WZ |
133 | static int debug_to_region_ok_for_hw_watchpoint (CORE_ADDR, int); |
134 | ||
0cf6dd15 TJB |
135 | static int debug_to_can_accel_watchpoint_condition (CORE_ADDR, int, int, |
136 | struct expression *); | |
137 | ||
a14ed312 | 138 | static void debug_to_terminal_init (void); |
c906108c | 139 | |
a14ed312 | 140 | static void debug_to_terminal_inferior (void); |
c906108c | 141 | |
a14ed312 | 142 | static void debug_to_terminal_ours_for_output (void); |
c906108c | 143 | |
a790ad35 SC |
144 | static void debug_to_terminal_save_ours (void); |
145 | ||
a14ed312 | 146 | static void debug_to_terminal_ours (void); |
c906108c | 147 | |
a14ed312 | 148 | static void debug_to_terminal_info (char *, int); |
c906108c | 149 | |
a14ed312 | 150 | static void debug_to_load (char *, int); |
c906108c | 151 | |
a14ed312 | 152 | static int debug_to_lookup_symbol (char *, CORE_ADDR *); |
c906108c | 153 | |
a14ed312 | 154 | static int debug_to_can_run (void); |
c906108c | 155 | |
39f77062 | 156 | static void debug_to_notice_signals (ptid_t); |
c906108c | 157 | |
94cc34af | 158 | static void debug_to_stop (ptid_t); |
c906108c | 159 | |
c906108c | 160 | /* Pointer to array of target architecture structures; the size of the |
2bc416ba | 161 | array; the current index into the array; the allocated size of the |
c906108c SS |
162 | array. */ |
163 | struct target_ops **target_structs; | |
164 | unsigned target_struct_size; | |
165 | unsigned target_struct_index; | |
166 | unsigned target_struct_allocsize; | |
167 | #define DEFAULT_ALLOCSIZE 10 | |
168 | ||
169 | /* The initial current target, so that there is always a semi-valid | |
170 | current target. */ | |
171 | ||
172 | static struct target_ops dummy_target; | |
173 | ||
174 | /* Top of target stack. */ | |
175 | ||
258b763a | 176 | static struct target_ops *target_stack; |
c906108c SS |
177 | |
178 | /* The target structure we are currently using to talk to a process | |
179 | or file or whatever "inferior" we have. */ | |
180 | ||
181 | struct target_ops current_target; | |
182 | ||
183 | /* Command list for target. */ | |
184 | ||
185 | static struct cmd_list_element *targetlist = NULL; | |
186 | ||
cf7a04e8 DJ |
187 | /* Nonzero if we should trust readonly sections from the |
188 | executable when reading memory. */ | |
189 | ||
190 | static int trust_readonly = 0; | |
191 | ||
8defab1a DJ |
192 | /* Nonzero if we should show true memory content including |
193 | memory breakpoint inserted by gdb. */ | |
194 | ||
195 | static int show_memory_breakpoints = 0; | |
196 | ||
d914c394 SS |
197 | /* These globals control whether GDB attempts to perform these |
198 | operations; they are useful for targets that need to prevent | |
199 | inadvertant disruption, such as in non-stop mode. */ | |
200 | ||
201 | int may_write_registers = 1; | |
202 | ||
203 | int may_write_memory = 1; | |
204 | ||
205 | int may_insert_breakpoints = 1; | |
206 | ||
207 | int may_insert_tracepoints = 1; | |
208 | ||
209 | int may_insert_fast_tracepoints = 1; | |
210 | ||
211 | int may_stop = 1; | |
212 | ||
c906108c SS |
213 | /* Non-zero if we want to see trace of target level stuff. */ |
214 | ||
215 | static int targetdebug = 0; | |
920d2a44 AC |
216 | static void |
217 | show_targetdebug (struct ui_file *file, int from_tty, | |
218 | struct cmd_list_element *c, const char *value) | |
219 | { | |
220 | fprintf_filtered (file, _("Target debugging is %s.\n"), value); | |
221 | } | |
c906108c | 222 | |
a14ed312 | 223 | static void setup_target_debug (void); |
c906108c | 224 | |
4e5d721f DE |
225 | /* The option sets this. */ |
226 | static int stack_cache_enabled_p_1 = 1; | |
227 | /* And set_stack_cache_enabled_p updates this. | |
228 | The reason for the separation is so that we don't flush the cache for | |
229 | on->on transitions. */ | |
230 | static int stack_cache_enabled_p = 1; | |
231 | ||
232 | /* This is called *after* the stack-cache has been set. | |
233 | Flush the cache for off->on and on->off transitions. | |
234 | There's no real need to flush the cache for on->off transitions, | |
235 | except cleanliness. */ | |
236 | ||
237 | static void | |
238 | set_stack_cache_enabled_p (char *args, int from_tty, | |
239 | struct cmd_list_element *c) | |
240 | { | |
241 | if (stack_cache_enabled_p != stack_cache_enabled_p_1) | |
242 | target_dcache_invalidate (); | |
243 | ||
244 | stack_cache_enabled_p = stack_cache_enabled_p_1; | |
245 | } | |
246 | ||
247 | static void | |
248 | show_stack_cache_enabled_p (struct ui_file *file, int from_tty, | |
249 | struct cmd_list_element *c, const char *value) | |
250 | { | |
251 | fprintf_filtered (file, _("Cache use for stack accesses is %s.\n"), value); | |
252 | } | |
253 | ||
254 | /* Cache of memory operations, to speed up remote access. */ | |
255 | static DCACHE *target_dcache; | |
256 | ||
257 | /* Invalidate the target dcache. */ | |
258 | ||
259 | void | |
260 | target_dcache_invalidate (void) | |
261 | { | |
262 | dcache_invalidate (target_dcache); | |
263 | } | |
4930751a | 264 | |
c906108c SS |
265 | /* The user just typed 'target' without the name of a target. */ |
266 | ||
c906108c | 267 | static void |
fba45db2 | 268 | target_command (char *arg, int from_tty) |
c906108c SS |
269 | { |
270 | fputs_filtered ("Argument required (target name). Try `help target'\n", | |
271 | gdb_stdout); | |
272 | } | |
273 | ||
c35b1492 PA |
274 | /* Default target_has_* methods for process_stratum targets. */ |
275 | ||
276 | int | |
277 | default_child_has_all_memory (struct target_ops *ops) | |
278 | { | |
279 | /* If no inferior selected, then we can't read memory here. */ | |
280 | if (ptid_equal (inferior_ptid, null_ptid)) | |
281 | return 0; | |
282 | ||
283 | return 1; | |
284 | } | |
285 | ||
286 | int | |
287 | default_child_has_memory (struct target_ops *ops) | |
288 | { | |
289 | /* If no inferior selected, then we can't read memory here. */ | |
290 | if (ptid_equal (inferior_ptid, null_ptid)) | |
291 | return 0; | |
292 | ||
293 | return 1; | |
294 | } | |
295 | ||
296 | int | |
297 | default_child_has_stack (struct target_ops *ops) | |
298 | { | |
299 | /* If no inferior selected, there's no stack. */ | |
300 | if (ptid_equal (inferior_ptid, null_ptid)) | |
301 | return 0; | |
302 | ||
303 | return 1; | |
304 | } | |
305 | ||
306 | int | |
307 | default_child_has_registers (struct target_ops *ops) | |
308 | { | |
309 | /* Can't read registers from no inferior. */ | |
310 | if (ptid_equal (inferior_ptid, null_ptid)) | |
311 | return 0; | |
312 | ||
313 | return 1; | |
314 | } | |
315 | ||
316 | int | |
317 | default_child_has_execution (struct target_ops *ops) | |
318 | { | |
319 | /* If there's no thread selected, then we can't make it run through | |
320 | hoops. */ | |
321 | if (ptid_equal (inferior_ptid, null_ptid)) | |
322 | return 0; | |
323 | ||
324 | return 1; | |
325 | } | |
326 | ||
327 | ||
328 | int | |
329 | target_has_all_memory_1 (void) | |
330 | { | |
331 | struct target_ops *t; | |
332 | ||
333 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
334 | if (t->to_has_all_memory (t)) | |
335 | return 1; | |
336 | ||
337 | return 0; | |
338 | } | |
339 | ||
340 | int | |
341 | target_has_memory_1 (void) | |
342 | { | |
343 | struct target_ops *t; | |
344 | ||
345 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
346 | if (t->to_has_memory (t)) | |
347 | return 1; | |
348 | ||
349 | return 0; | |
350 | } | |
351 | ||
352 | int | |
353 | target_has_stack_1 (void) | |
354 | { | |
355 | struct target_ops *t; | |
356 | ||
357 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
358 | if (t->to_has_stack (t)) | |
359 | return 1; | |
360 | ||
361 | return 0; | |
362 | } | |
363 | ||
364 | int | |
365 | target_has_registers_1 (void) | |
366 | { | |
367 | struct target_ops *t; | |
368 | ||
369 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
370 | if (t->to_has_registers (t)) | |
371 | return 1; | |
372 | ||
373 | return 0; | |
374 | } | |
375 | ||
376 | int | |
377 | target_has_execution_1 (void) | |
378 | { | |
379 | struct target_ops *t; | |
380 | ||
381 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
382 | if (t->to_has_execution (t)) | |
383 | return 1; | |
384 | ||
385 | return 0; | |
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) | |
410 | t->to_has_execution = (int (*) (struct target_ops *)) return_zero; | |
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 int |
fba45db2 | 530 | nosymbol (char *name, CORE_ADDR *addrp) |
c906108c | 531 | { |
c378eb4e | 532 | return 1; /* Symbol does not exist in target env. */ |
c906108c SS |
533 | } |
534 | ||
c906108c | 535 | static void |
fba45db2 | 536 | default_terminal_info (char *args, int from_tty) |
c906108c | 537 | { |
a3f17187 | 538 | printf_unfiltered (_("No saved terminal information.\n")); |
c906108c SS |
539 | } |
540 | ||
0ef643c8 JB |
541 | /* A default implementation for the to_get_ada_task_ptid target method. |
542 | ||
543 | This function builds the PTID by using both LWP and TID as part of | |
544 | the PTID lwp and tid elements. The pid used is the pid of the | |
545 | inferior_ptid. */ | |
546 | ||
2c0b251b | 547 | static ptid_t |
0ef643c8 JB |
548 | default_get_ada_task_ptid (long lwp, long tid) |
549 | { | |
550 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid); | |
551 | } | |
552 | ||
7998dfc3 AC |
553 | /* Go through the target stack from top to bottom, copying over zero |
554 | entries in current_target, then filling in still empty entries. In | |
555 | effect, we are doing class inheritance through the pushed target | |
556 | vectors. | |
557 | ||
558 | NOTE: cagney/2003-10-17: The problem with this inheritance, as it | |
559 | is currently implemented, is that it discards any knowledge of | |
560 | which target an inherited method originally belonged to. | |
561 | Consequently, new new target methods should instead explicitly and | |
562 | locally search the target stack for the target that can handle the | |
563 | request. */ | |
c906108c SS |
564 | |
565 | static void | |
7998dfc3 | 566 | update_current_target (void) |
c906108c | 567 | { |
7998dfc3 AC |
568 | struct target_ops *t; |
569 | ||
08d8bcd7 | 570 | /* First, reset current's contents. */ |
7998dfc3 AC |
571 | memset (¤t_target, 0, sizeof (current_target)); |
572 | ||
573 | #define INHERIT(FIELD, TARGET) \ | |
574 | if (!current_target.FIELD) \ | |
575 | current_target.FIELD = (TARGET)->FIELD | |
576 | ||
577 | for (t = target_stack; t; t = t->beneath) | |
578 | { | |
579 | INHERIT (to_shortname, t); | |
580 | INHERIT (to_longname, t); | |
581 | INHERIT (to_doc, t); | |
b52323fa UW |
582 | /* Do not inherit to_open. */ |
583 | /* Do not inherit to_close. */ | |
136d6dae | 584 | /* Do not inherit to_attach. */ |
7998dfc3 | 585 | INHERIT (to_post_attach, t); |
dc177b7a | 586 | INHERIT (to_attach_no_wait, t); |
136d6dae | 587 | /* Do not inherit to_detach. */ |
597320e7 | 588 | /* Do not inherit to_disconnect. */ |
28439f5e | 589 | /* Do not inherit to_resume. */ |
117de6a9 | 590 | /* Do not inherit to_wait. */ |
28439f5e PA |
591 | /* Do not inherit to_fetch_registers. */ |
592 | /* Do not inherit to_store_registers. */ | |
7998dfc3 | 593 | INHERIT (to_prepare_to_store, t); |
c8e73a31 | 594 | INHERIT (deprecated_xfer_memory, t); |
7998dfc3 AC |
595 | INHERIT (to_files_info, t); |
596 | INHERIT (to_insert_breakpoint, t); | |
597 | INHERIT (to_remove_breakpoint, t); | |
598 | INHERIT (to_can_use_hw_breakpoint, t); | |
599 | INHERIT (to_insert_hw_breakpoint, t); | |
600 | INHERIT (to_remove_hw_breakpoint, t); | |
601 | INHERIT (to_insert_watchpoint, t); | |
602 | INHERIT (to_remove_watchpoint, t); | |
603 | INHERIT (to_stopped_data_address, t); | |
74174d2e | 604 | INHERIT (to_have_steppable_watchpoint, t); |
7998dfc3 | 605 | INHERIT (to_have_continuable_watchpoint, t); |
5009afc5 AS |
606 | INHERIT (to_stopped_by_watchpoint, t); |
607 | INHERIT (to_watchpoint_addr_within_range, t); | |
e0d24f8d | 608 | INHERIT (to_region_ok_for_hw_watchpoint, t); |
0cf6dd15 | 609 | INHERIT (to_can_accel_watchpoint_condition, t); |
7998dfc3 AC |
610 | INHERIT (to_terminal_init, t); |
611 | INHERIT (to_terminal_inferior, t); | |
612 | INHERIT (to_terminal_ours_for_output, t); | |
613 | INHERIT (to_terminal_ours, t); | |
614 | INHERIT (to_terminal_save_ours, t); | |
615 | INHERIT (to_terminal_info, t); | |
7d85a9c0 | 616 | /* Do not inherit to_kill. */ |
7998dfc3 AC |
617 | INHERIT (to_load, t); |
618 | INHERIT (to_lookup_symbol, t); | |
136d6dae | 619 | /* Do no inherit to_create_inferior. */ |
7998dfc3 | 620 | INHERIT (to_post_startup_inferior, t); |
7998dfc3 AC |
621 | INHERIT (to_insert_fork_catchpoint, t); |
622 | INHERIT (to_remove_fork_catchpoint, t); | |
623 | INHERIT (to_insert_vfork_catchpoint, t); | |
624 | INHERIT (to_remove_vfork_catchpoint, t); | |
ee057212 | 625 | /* Do not inherit to_follow_fork. */ |
7998dfc3 AC |
626 | INHERIT (to_insert_exec_catchpoint, t); |
627 | INHERIT (to_remove_exec_catchpoint, t); | |
a96d9b2e | 628 | INHERIT (to_set_syscall_catchpoint, t); |
7998dfc3 | 629 | INHERIT (to_has_exited, t); |
82892036 | 630 | /* Do not inherit to_mourn_inferior. */ |
7998dfc3 AC |
631 | INHERIT (to_can_run, t); |
632 | INHERIT (to_notice_signals, t); | |
28439f5e PA |
633 | /* Do not inherit to_thread_alive. */ |
634 | /* Do not inherit to_find_new_threads. */ | |
117de6a9 | 635 | /* Do not inherit to_pid_to_str. */ |
7998dfc3 | 636 | INHERIT (to_extra_thread_info, t); |
4694da01 | 637 | INHERIT (to_thread_name, t); |
7998dfc3 | 638 | INHERIT (to_stop, t); |
4b8a223f | 639 | /* Do not inherit to_xfer_partial. */ |
7998dfc3 | 640 | INHERIT (to_rcmd, t); |
7998dfc3 | 641 | INHERIT (to_pid_to_exec_file, t); |
49d03eab | 642 | INHERIT (to_log_command, t); |
7998dfc3 | 643 | INHERIT (to_stratum, t); |
c378eb4e MS |
644 | /* Do not inherit to_has_all_memory. */ |
645 | /* Do not inherit to_has_memory. */ | |
646 | /* Do not inherit to_has_stack. */ | |
647 | /* Do not inherit to_has_registers. */ | |
648 | /* Do not inherit to_has_execution. */ | |
7998dfc3 | 649 | INHERIT (to_has_thread_control, t); |
7998dfc3 AC |
650 | INHERIT (to_can_async_p, t); |
651 | INHERIT (to_is_async_p, t); | |
652 | INHERIT (to_async, t); | |
b84876c2 | 653 | INHERIT (to_async_mask, t); |
7998dfc3 AC |
654 | INHERIT (to_find_memory_regions, t); |
655 | INHERIT (to_make_corefile_notes, t); | |
6b04bdb7 MS |
656 | INHERIT (to_get_bookmark, t); |
657 | INHERIT (to_goto_bookmark, t); | |
117de6a9 | 658 | /* Do not inherit to_get_thread_local_address. */ |
b2175913 | 659 | INHERIT (to_can_execute_reverse, t); |
c2250ad1 | 660 | INHERIT (to_thread_architecture, t); |
424163ea | 661 | /* Do not inherit to_read_description. */ |
0ef643c8 | 662 | INHERIT (to_get_ada_task_ptid, t); |
08388c79 | 663 | /* Do not inherit to_search_memory. */ |
8a305172 | 664 | INHERIT (to_supports_multi_process, t); |
35b1e5cc SS |
665 | INHERIT (to_trace_init, t); |
666 | INHERIT (to_download_tracepoint, t); | |
667 | INHERIT (to_download_trace_state_variable, t); | |
668 | INHERIT (to_trace_set_readonly_regions, t); | |
669 | INHERIT (to_trace_start, t); | |
670 | INHERIT (to_get_trace_status, t); | |
671 | INHERIT (to_trace_stop, t); | |
672 | INHERIT (to_trace_find, t); | |
673 | INHERIT (to_get_trace_state_variable_value, t); | |
00bf0b85 SS |
674 | INHERIT (to_save_trace_data, t); |
675 | INHERIT (to_upload_tracepoints, t); | |
676 | INHERIT (to_upload_trace_state_variables, t); | |
677 | INHERIT (to_get_raw_trace_data, t); | |
35b1e5cc | 678 | INHERIT (to_set_disconnected_tracing, t); |
4daf5ac0 | 679 | INHERIT (to_set_circular_trace_buffer, t); |
711e434b | 680 | INHERIT (to_get_tib_address, t); |
d914c394 | 681 | INHERIT (to_set_permissions, t); |
0fb4aa4b PA |
682 | INHERIT (to_static_tracepoint_marker_at, t); |
683 | INHERIT (to_static_tracepoint_markers_by_strid, t); | |
7998dfc3 | 684 | INHERIT (to_magic, t); |
fd79ecee | 685 | /* Do not inherit to_memory_map. */ |
a76d924d DJ |
686 | /* Do not inherit to_flash_erase. */ |
687 | /* Do not inherit to_flash_done. */ | |
7998dfc3 AC |
688 | } |
689 | #undef INHERIT | |
690 | ||
691 | /* Clean up a target struct so it no longer has any zero pointers in | |
0088c768 AC |
692 | it. Some entries are defaulted to a method that print an error, |
693 | others are hard-wired to a standard recursive default. */ | |
c906108c SS |
694 | |
695 | #define de_fault(field, value) \ | |
7998dfc3 AC |
696 | if (!current_target.field) \ |
697 | current_target.field = value | |
0d06e24b | 698 | |
2bc416ba DJ |
699 | de_fault (to_open, |
700 | (void (*) (char *, int)) | |
0d06e24b | 701 | tcomplain); |
2bc416ba DJ |
702 | de_fault (to_close, |
703 | (void (*) (int)) | |
0d06e24b | 704 | target_ignore); |
2bc416ba DJ |
705 | de_fault (to_post_attach, |
706 | (void (*) (int)) | |
0d06e24b | 707 | target_ignore); |
2bc416ba | 708 | de_fault (to_prepare_to_store, |
316f2060 | 709 | (void (*) (struct regcache *)) |
0d06e24b | 710 | noprocess); |
2bc416ba | 711 | de_fault (deprecated_xfer_memory, |
3e43a32a MS |
712 | (int (*) (CORE_ADDR, gdb_byte *, int, int, |
713 | struct mem_attrib *, struct target_ops *)) | |
0d06e24b | 714 | nomemory); |
2bc416ba DJ |
715 | de_fault (to_files_info, |
716 | (void (*) (struct target_ops *)) | |
0d06e24b | 717 | target_ignore); |
2bc416ba | 718 | de_fault (to_insert_breakpoint, |
0d06e24b | 719 | memory_insert_breakpoint); |
2bc416ba | 720 | de_fault (to_remove_breakpoint, |
0d06e24b | 721 | memory_remove_breakpoint); |
ccaa32c7 GS |
722 | de_fault (to_can_use_hw_breakpoint, |
723 | (int (*) (int, int, int)) | |
724 | return_zero); | |
725 | de_fault (to_insert_hw_breakpoint, | |
a6d9a66e | 726 | (int (*) (struct gdbarch *, struct bp_target_info *)) |
ccaa32c7 GS |
727 | return_minus_one); |
728 | de_fault (to_remove_hw_breakpoint, | |
a6d9a66e | 729 | (int (*) (struct gdbarch *, struct bp_target_info *)) |
ccaa32c7 GS |
730 | return_minus_one); |
731 | de_fault (to_insert_watchpoint, | |
0cf6dd15 | 732 | (int (*) (CORE_ADDR, int, int, struct expression *)) |
ccaa32c7 GS |
733 | return_minus_one); |
734 | de_fault (to_remove_watchpoint, | |
0cf6dd15 | 735 | (int (*) (CORE_ADDR, int, int, struct expression *)) |
ccaa32c7 GS |
736 | return_minus_one); |
737 | de_fault (to_stopped_by_watchpoint, | |
738 | (int (*) (void)) | |
739 | return_zero); | |
740 | de_fault (to_stopped_data_address, | |
4aa7a7f5 | 741 | (int (*) (struct target_ops *, CORE_ADDR *)) |
ccaa32c7 | 742 | return_zero); |
5009afc5 AS |
743 | de_fault (to_watchpoint_addr_within_range, |
744 | default_watchpoint_addr_within_range); | |
e0d24f8d WZ |
745 | de_fault (to_region_ok_for_hw_watchpoint, |
746 | default_region_ok_for_hw_watchpoint); | |
0cf6dd15 TJB |
747 | de_fault (to_can_accel_watchpoint_condition, |
748 | (int (*) (CORE_ADDR, int, int, struct expression *)) | |
749 | return_zero); | |
2bc416ba DJ |
750 | de_fault (to_terminal_init, |
751 | (void (*) (void)) | |
0d06e24b | 752 | target_ignore); |
2bc416ba DJ |
753 | de_fault (to_terminal_inferior, |
754 | (void (*) (void)) | |
0d06e24b | 755 | target_ignore); |
2bc416ba DJ |
756 | de_fault (to_terminal_ours_for_output, |
757 | (void (*) (void)) | |
0d06e24b | 758 | target_ignore); |
2bc416ba DJ |
759 | de_fault (to_terminal_ours, |
760 | (void (*) (void)) | |
0d06e24b | 761 | target_ignore); |
2bc416ba DJ |
762 | de_fault (to_terminal_save_ours, |
763 | (void (*) (void)) | |
a790ad35 | 764 | target_ignore); |
2bc416ba | 765 | de_fault (to_terminal_info, |
0d06e24b | 766 | default_terminal_info); |
2bc416ba DJ |
767 | de_fault (to_load, |
768 | (void (*) (char *, int)) | |
0d06e24b | 769 | tcomplain); |
2bc416ba DJ |
770 | de_fault (to_lookup_symbol, |
771 | (int (*) (char *, CORE_ADDR *)) | |
0d06e24b | 772 | nosymbol); |
2bc416ba DJ |
773 | de_fault (to_post_startup_inferior, |
774 | (void (*) (ptid_t)) | |
0d06e24b | 775 | target_ignore); |
2bc416ba | 776 | de_fault (to_insert_fork_catchpoint, |
77b06cd7 TJB |
777 | (int (*) (int)) |
778 | return_one); | |
2bc416ba DJ |
779 | de_fault (to_remove_fork_catchpoint, |
780 | (int (*) (int)) | |
77b06cd7 | 781 | return_one); |
2bc416ba | 782 | de_fault (to_insert_vfork_catchpoint, |
77b06cd7 TJB |
783 | (int (*) (int)) |
784 | return_one); | |
2bc416ba DJ |
785 | de_fault (to_remove_vfork_catchpoint, |
786 | (int (*) (int)) | |
77b06cd7 | 787 | return_one); |
2bc416ba | 788 | de_fault (to_insert_exec_catchpoint, |
77b06cd7 TJB |
789 | (int (*) (int)) |
790 | return_one); | |
2bc416ba DJ |
791 | de_fault (to_remove_exec_catchpoint, |
792 | (int (*) (int)) | |
77b06cd7 | 793 | return_one); |
a96d9b2e SDJ |
794 | de_fault (to_set_syscall_catchpoint, |
795 | (int (*) (int, int, int, int, int *)) | |
77b06cd7 | 796 | return_one); |
2bc416ba DJ |
797 | de_fault (to_has_exited, |
798 | (int (*) (int, int, int *)) | |
0d06e24b | 799 | return_zero); |
2bc416ba | 800 | de_fault (to_can_run, |
0d06e24b | 801 | return_zero); |
2bc416ba DJ |
802 | de_fault (to_notice_signals, |
803 | (void (*) (ptid_t)) | |
0d06e24b | 804 | target_ignore); |
2bc416ba DJ |
805 | de_fault (to_extra_thread_info, |
806 | (char *(*) (struct thread_info *)) | |
0d06e24b | 807 | return_zero); |
4694da01 TT |
808 | de_fault (to_thread_name, |
809 | (char *(*) (struct thread_info *)) | |
810 | return_zero); | |
2bc416ba | 811 | de_fault (to_stop, |
94cc34af | 812 | (void (*) (ptid_t)) |
0d06e24b | 813 | target_ignore); |
cf7a04e8 | 814 | current_target.to_xfer_partial = current_xfer_partial; |
2bc416ba DJ |
815 | de_fault (to_rcmd, |
816 | (void (*) (char *, struct ui_file *)) | |
0d06e24b | 817 | tcomplain); |
2bc416ba DJ |
818 | de_fault (to_pid_to_exec_file, |
819 | (char *(*) (int)) | |
0d06e24b | 820 | return_zero); |
2bc416ba DJ |
821 | de_fault (to_async, |
822 | (void (*) (void (*) (enum inferior_event_type, void*), void*)) | |
0d06e24b | 823 | tcomplain); |
b84876c2 PA |
824 | de_fault (to_async_mask, |
825 | (int (*) (int)) | |
826 | return_one); | |
c2250ad1 UW |
827 | de_fault (to_thread_architecture, |
828 | default_thread_architecture); | |
424163ea | 829 | current_target.to_read_description = NULL; |
0ef643c8 JB |
830 | de_fault (to_get_ada_task_ptid, |
831 | (ptid_t (*) (long, long)) | |
832 | default_get_ada_task_ptid); | |
8a305172 PA |
833 | de_fault (to_supports_multi_process, |
834 | (int (*) (void)) | |
835 | return_zero); | |
35b1e5cc SS |
836 | de_fault (to_trace_init, |
837 | (void (*) (void)) | |
838 | tcomplain); | |
839 | de_fault (to_download_tracepoint, | |
840 | (void (*) (struct breakpoint *)) | |
841 | tcomplain); | |
842 | de_fault (to_download_trace_state_variable, | |
843 | (void (*) (struct trace_state_variable *)) | |
844 | tcomplain); | |
845 | de_fault (to_trace_set_readonly_regions, | |
846 | (void (*) (void)) | |
847 | tcomplain); | |
848 | de_fault (to_trace_start, | |
849 | (void (*) (void)) | |
850 | tcomplain); | |
851 | de_fault (to_get_trace_status, | |
00bf0b85 | 852 | (int (*) (struct trace_status *)) |
35b1e5cc SS |
853 | return_minus_one); |
854 | de_fault (to_trace_stop, | |
855 | (void (*) (void)) | |
856 | tcomplain); | |
857 | de_fault (to_trace_find, | |
858 | (int (*) (enum trace_find_type, int, ULONGEST, ULONGEST, int *)) | |
4136fdd2 | 859 | return_minus_one); |
35b1e5cc SS |
860 | de_fault (to_get_trace_state_variable_value, |
861 | (int (*) (int, LONGEST *)) | |
862 | return_zero); | |
00bf0b85 | 863 | de_fault (to_save_trace_data, |
011aacb0 | 864 | (int (*) (const char *)) |
00bf0b85 SS |
865 | tcomplain); |
866 | de_fault (to_upload_tracepoints, | |
867 | (int (*) (struct uploaded_tp **)) | |
868 | return_zero); | |
869 | de_fault (to_upload_trace_state_variables, | |
870 | (int (*) (struct uploaded_tsv **)) | |
871 | return_zero); | |
872 | de_fault (to_get_raw_trace_data, | |
873 | (LONGEST (*) (gdb_byte *, ULONGEST, LONGEST)) | |
874 | tcomplain); | |
35b1e5cc SS |
875 | de_fault (to_set_disconnected_tracing, |
876 | (void (*) (int)) | |
4daf5ac0 SS |
877 | target_ignore); |
878 | de_fault (to_set_circular_trace_buffer, | |
879 | (void (*) (int)) | |
880 | target_ignore); | |
711e434b PM |
881 | de_fault (to_get_tib_address, |
882 | (int (*) (ptid_t, CORE_ADDR *)) | |
883 | tcomplain); | |
d914c394 SS |
884 | de_fault (to_set_permissions, |
885 | (void (*) (void)) | |
886 | target_ignore); | |
0fb4aa4b PA |
887 | de_fault (to_static_tracepoint_marker_at, |
888 | (int (*) (CORE_ADDR, struct static_tracepoint_marker *)) | |
889 | return_zero); | |
890 | de_fault (to_static_tracepoint_markers_by_strid, | |
891 | (VEC(static_tracepoint_marker_p) * (*) (const char *)) | |
892 | tcomplain); | |
c906108c | 893 | #undef de_fault |
c906108c | 894 | |
7998dfc3 AC |
895 | /* Finally, position the target-stack beneath the squashed |
896 | "current_target". That way code looking for a non-inherited | |
897 | target method can quickly and simply find it. */ | |
898 | current_target.beneath = target_stack; | |
b4b61fdb DJ |
899 | |
900 | if (targetdebug) | |
901 | setup_target_debug (); | |
c906108c SS |
902 | } |
903 | ||
904 | /* Push a new target type into the stack of the existing target accessors, | |
905 | possibly superseding some of the existing accessors. | |
906 | ||
c906108c SS |
907 | Rather than allow an empty stack, we always have the dummy target at |
908 | the bottom stratum, so we can call the function vectors without | |
909 | checking them. */ | |
910 | ||
b26a4dcb | 911 | void |
fba45db2 | 912 | push_target (struct target_ops *t) |
c906108c | 913 | { |
258b763a | 914 | struct target_ops **cur; |
c906108c SS |
915 | |
916 | /* Check magic number. If wrong, it probably means someone changed | |
917 | the struct definition, but not all the places that initialize one. */ | |
918 | if (t->to_magic != OPS_MAGIC) | |
919 | { | |
c5aa993b JM |
920 | fprintf_unfiltered (gdb_stderr, |
921 | "Magic number of %s target struct wrong\n", | |
922 | t->to_shortname); | |
3e43a32a MS |
923 | internal_error (__FILE__, __LINE__, |
924 | _("failed internal consistency check")); | |
c906108c SS |
925 | } |
926 | ||
258b763a AC |
927 | /* Find the proper stratum to install this target in. */ |
928 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
c906108c | 929 | { |
258b763a | 930 | if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum) |
c906108c SS |
931 | break; |
932 | } | |
933 | ||
258b763a | 934 | /* If there's already targets at this stratum, remove them. */ |
88c231eb | 935 | /* FIXME: cagney/2003-10-15: I think this should be popping all |
258b763a AC |
936 | targets to CUR, and not just those at this stratum level. */ |
937 | while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum) | |
938 | { | |
939 | /* There's already something at this stratum level. Close it, | |
940 | and un-hook it from the stack. */ | |
941 | struct target_ops *tmp = (*cur); | |
5d502164 | 942 | |
258b763a AC |
943 | (*cur) = (*cur)->beneath; |
944 | tmp->beneath = NULL; | |
f1c07ab0 | 945 | target_close (tmp, 0); |
258b763a | 946 | } |
c906108c SS |
947 | |
948 | /* We have removed all targets in our stratum, now add the new one. */ | |
258b763a AC |
949 | t->beneath = (*cur); |
950 | (*cur) = t; | |
c906108c SS |
951 | |
952 | update_current_target (); | |
c906108c SS |
953 | } |
954 | ||
2bc416ba | 955 | /* Remove a target_ops vector from the stack, wherever it may be. |
c906108c SS |
956 | Return how many times it was removed (0 or 1). */ |
957 | ||
958 | int | |
fba45db2 | 959 | unpush_target (struct target_ops *t) |
c906108c | 960 | { |
258b763a AC |
961 | struct target_ops **cur; |
962 | struct target_ops *tmp; | |
c906108c | 963 | |
c8d104ad PA |
964 | if (t->to_stratum == dummy_stratum) |
965 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 966 | _("Attempt to unpush the dummy target")); |
c8d104ad | 967 | |
c906108c | 968 | /* Look for the specified target. Note that we assume that a target |
c378eb4e | 969 | can only occur once in the target stack. */ |
c906108c | 970 | |
258b763a AC |
971 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) |
972 | { | |
973 | if ((*cur) == t) | |
974 | break; | |
975 | } | |
c906108c | 976 | |
258b763a | 977 | if ((*cur) == NULL) |
c378eb4e | 978 | return 0; /* Didn't find target_ops, quit now. */ |
c906108c | 979 | |
5269965e AC |
980 | /* NOTE: cagney/2003-12-06: In '94 the close call was made |
981 | unconditional by moving it to before the above check that the | |
982 | target was in the target stack (something about "Change the way | |
983 | pushing and popping of targets work to support target overlays | |
984 | and inheritance"). This doesn't make much sense - only open | |
985 | targets should be closed. */ | |
986 | target_close (t, 0); | |
987 | ||
c378eb4e | 988 | /* Unchain the target. */ |
258b763a AC |
989 | tmp = (*cur); |
990 | (*cur) = (*cur)->beneath; | |
991 | tmp->beneath = NULL; | |
c906108c SS |
992 | |
993 | update_current_target (); | |
c906108c SS |
994 | |
995 | return 1; | |
996 | } | |
997 | ||
998 | void | |
fba45db2 | 999 | pop_target (void) |
c906108c | 1000 | { |
c378eb4e | 1001 | target_close (target_stack, 0); /* Let it clean up. */ |
258b763a | 1002 | if (unpush_target (target_stack) == 1) |
c906108c SS |
1003 | return; |
1004 | ||
c5aa993b JM |
1005 | fprintf_unfiltered (gdb_stderr, |
1006 | "pop_target couldn't find target %s\n", | |
1007 | current_target.to_shortname); | |
5d502164 MS |
1008 | internal_error (__FILE__, __LINE__, |
1009 | _("failed internal consistency check")); | |
c906108c SS |
1010 | } |
1011 | ||
aa76d38d | 1012 | void |
87ab71f0 | 1013 | pop_all_targets_above (enum strata above_stratum, int quitting) |
aa76d38d | 1014 | { |
87ab71f0 | 1015 | while ((int) (current_target.to_stratum) > (int) above_stratum) |
aa76d38d | 1016 | { |
b52323fa | 1017 | target_close (target_stack, quitting); |
aa76d38d PA |
1018 | if (!unpush_target (target_stack)) |
1019 | { | |
1020 | fprintf_unfiltered (gdb_stderr, | |
1021 | "pop_all_targets couldn't find target %s\n", | |
b52323fa | 1022 | target_stack->to_shortname); |
aa76d38d PA |
1023 | internal_error (__FILE__, __LINE__, |
1024 | _("failed internal consistency check")); | |
1025 | break; | |
1026 | } | |
1027 | } | |
1028 | } | |
1029 | ||
87ab71f0 PA |
1030 | void |
1031 | pop_all_targets (int quitting) | |
1032 | { | |
1033 | pop_all_targets_above (dummy_stratum, quitting); | |
1034 | } | |
1035 | ||
c0edd9ed JK |
1036 | /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */ |
1037 | ||
1038 | int | |
1039 | target_is_pushed (struct target_ops *t) | |
1040 | { | |
1041 | struct target_ops **cur; | |
1042 | ||
1043 | /* Check magic number. If wrong, it probably means someone changed | |
1044 | the struct definition, but not all the places that initialize one. */ | |
1045 | if (t->to_magic != OPS_MAGIC) | |
1046 | { | |
1047 | fprintf_unfiltered (gdb_stderr, | |
1048 | "Magic number of %s target struct wrong\n", | |
1049 | t->to_shortname); | |
3e43a32a MS |
1050 | internal_error (__FILE__, __LINE__, |
1051 | _("failed internal consistency check")); | |
c0edd9ed JK |
1052 | } |
1053 | ||
1054 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
1055 | if (*cur == t) | |
1056 | return 1; | |
1057 | ||
1058 | return 0; | |
1059 | } | |
1060 | ||
72f5cf0e | 1061 | /* Using the objfile specified in OBJFILE, find the address for the |
9e35dae4 DJ |
1062 | current thread's thread-local storage with offset OFFSET. */ |
1063 | CORE_ADDR | |
1064 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) | |
1065 | { | |
1066 | volatile CORE_ADDR addr = 0; | |
117de6a9 PA |
1067 | struct target_ops *target; |
1068 | ||
1069 | for (target = current_target.beneath; | |
1070 | target != NULL; | |
1071 | target = target->beneath) | |
1072 | { | |
1073 | if (target->to_get_thread_local_address != NULL) | |
1074 | break; | |
1075 | } | |
9e35dae4 | 1076 | |
117de6a9 | 1077 | if (target != NULL |
1cf3db46 | 1078 | && gdbarch_fetch_tls_load_module_address_p (target_gdbarch)) |
9e35dae4 DJ |
1079 | { |
1080 | ptid_t ptid = inferior_ptid; | |
1081 | volatile struct gdb_exception ex; | |
1082 | ||
1083 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
1084 | { | |
1085 | CORE_ADDR lm_addr; | |
1086 | ||
1087 | /* Fetch the load module address for this objfile. */ | |
1cf3db46 | 1088 | lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch, |
9e35dae4 DJ |
1089 | objfile); |
1090 | /* If it's 0, throw the appropriate exception. */ | |
1091 | if (lm_addr == 0) | |
1092 | throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR, | |
1093 | _("TLS load module not found")); | |
1094 | ||
3e43a32a MS |
1095 | addr = target->to_get_thread_local_address (target, ptid, |
1096 | lm_addr, offset); | |
9e35dae4 DJ |
1097 | } |
1098 | /* If an error occurred, print TLS related messages here. Otherwise, | |
1099 | throw the error to some higher catcher. */ | |
1100 | if (ex.reason < 0) | |
1101 | { | |
1102 | int objfile_is_library = (objfile->flags & OBJF_SHARED); | |
1103 | ||
1104 | switch (ex.error) | |
1105 | { | |
1106 | case TLS_NO_LIBRARY_SUPPORT_ERROR: | |
3e43a32a MS |
1107 | error (_("Cannot find thread-local variables " |
1108 | "in this thread library.")); | |
9e35dae4 DJ |
1109 | break; |
1110 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: | |
1111 | if (objfile_is_library) | |
1112 | error (_("Cannot find shared library `%s' in dynamic" | |
1113 | " linker's load module list"), objfile->name); | |
1114 | else | |
1115 | error (_("Cannot find executable file `%s' in dynamic" | |
1116 | " linker's load module list"), objfile->name); | |
1117 | break; | |
1118 | case TLS_NOT_ALLOCATED_YET_ERROR: | |
1119 | if (objfile_is_library) | |
1120 | error (_("The inferior has not yet allocated storage for" | |
1121 | " thread-local variables in\n" | |
1122 | "the shared library `%s'\n" | |
1123 | "for %s"), | |
1124 | objfile->name, target_pid_to_str (ptid)); | |
1125 | else | |
1126 | error (_("The inferior has not yet allocated storage for" | |
1127 | " thread-local variables in\n" | |
1128 | "the executable `%s'\n" | |
1129 | "for %s"), | |
1130 | objfile->name, target_pid_to_str (ptid)); | |
1131 | break; | |
1132 | case TLS_GENERIC_ERROR: | |
1133 | if (objfile_is_library) | |
1134 | error (_("Cannot find thread-local storage for %s, " | |
1135 | "shared library %s:\n%s"), | |
1136 | target_pid_to_str (ptid), | |
1137 | objfile->name, ex.message); | |
1138 | else | |
1139 | error (_("Cannot find thread-local storage for %s, " | |
1140 | "executable file %s:\n%s"), | |
1141 | target_pid_to_str (ptid), | |
1142 | objfile->name, ex.message); | |
1143 | break; | |
1144 | default: | |
1145 | throw_exception (ex); | |
1146 | break; | |
1147 | } | |
1148 | } | |
1149 | } | |
1150 | /* It wouldn't be wrong here to try a gdbarch method, too; finding | |
1151 | TLS is an ABI-specific thing. But we don't do that yet. */ | |
1152 | else | |
1153 | error (_("Cannot find thread-local variables on this target")); | |
1154 | ||
1155 | return addr; | |
1156 | } | |
1157 | ||
c906108c SS |
1158 | #undef MIN |
1159 | #define MIN(A, B) (((A) <= (B)) ? (A) : (B)) | |
1160 | ||
1161 | /* target_read_string -- read a null terminated string, up to LEN bytes, | |
1162 | from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful. | |
1163 | Set *STRING to a pointer to malloc'd memory containing the data; the caller | |
1164 | is responsible for freeing it. Return the number of bytes successfully | |
1165 | read. */ | |
1166 | ||
1167 | int | |
fba45db2 | 1168 | target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop) |
c906108c SS |
1169 | { |
1170 | int tlen, origlen, offset, i; | |
1b0ba102 | 1171 | gdb_byte buf[4]; |
c906108c SS |
1172 | int errcode = 0; |
1173 | char *buffer; | |
1174 | int buffer_allocated; | |
1175 | char *bufptr; | |
1176 | unsigned int nbytes_read = 0; | |
1177 | ||
6217bf3e MS |
1178 | gdb_assert (string); |
1179 | ||
c906108c SS |
1180 | /* Small for testing. */ |
1181 | buffer_allocated = 4; | |
1182 | buffer = xmalloc (buffer_allocated); | |
1183 | bufptr = buffer; | |
1184 | ||
1185 | origlen = len; | |
1186 | ||
1187 | while (len > 0) | |
1188 | { | |
1189 | tlen = MIN (len, 4 - (memaddr & 3)); | |
1190 | offset = memaddr & 3; | |
1191 | ||
1b0ba102 | 1192 | errcode = target_read_memory (memaddr & ~3, buf, sizeof buf); |
c906108c SS |
1193 | if (errcode != 0) |
1194 | { | |
1195 | /* The transfer request might have crossed the boundary to an | |
c378eb4e | 1196 | unallocated region of memory. Retry the transfer, requesting |
c906108c SS |
1197 | a single byte. */ |
1198 | tlen = 1; | |
1199 | offset = 0; | |
b8eb5af0 | 1200 | errcode = target_read_memory (memaddr, buf, 1); |
c906108c SS |
1201 | if (errcode != 0) |
1202 | goto done; | |
1203 | } | |
1204 | ||
1205 | if (bufptr - buffer + tlen > buffer_allocated) | |
1206 | { | |
1207 | unsigned int bytes; | |
5d502164 | 1208 | |
c906108c SS |
1209 | bytes = bufptr - buffer; |
1210 | buffer_allocated *= 2; | |
1211 | buffer = xrealloc (buffer, buffer_allocated); | |
1212 | bufptr = buffer + bytes; | |
1213 | } | |
1214 | ||
1215 | for (i = 0; i < tlen; i++) | |
1216 | { | |
1217 | *bufptr++ = buf[i + offset]; | |
1218 | if (buf[i + offset] == '\000') | |
1219 | { | |
1220 | nbytes_read += i + 1; | |
1221 | goto done; | |
1222 | } | |
1223 | } | |
1224 | ||
1225 | memaddr += tlen; | |
1226 | len -= tlen; | |
1227 | nbytes_read += tlen; | |
1228 | } | |
c5aa993b | 1229 | done: |
6217bf3e | 1230 | *string = buffer; |
c906108c SS |
1231 | if (errnop != NULL) |
1232 | *errnop = errcode; | |
c906108c SS |
1233 | return nbytes_read; |
1234 | } | |
1235 | ||
07b82ea5 PA |
1236 | struct target_section_table * |
1237 | target_get_section_table (struct target_ops *target) | |
1238 | { | |
1239 | struct target_ops *t; | |
1240 | ||
1241 | if (targetdebug) | |
1242 | fprintf_unfiltered (gdb_stdlog, "target_get_section_table ()\n"); | |
1243 | ||
1244 | for (t = target; t != NULL; t = t->beneath) | |
1245 | if (t->to_get_section_table != NULL) | |
1246 | return (*t->to_get_section_table) (t); | |
1247 | ||
1248 | return NULL; | |
1249 | } | |
1250 | ||
8db32d44 | 1251 | /* Find a section containing ADDR. */ |
07b82ea5 | 1252 | |
0542c86d | 1253 | struct target_section * |
8db32d44 AC |
1254 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
1255 | { | |
07b82ea5 | 1256 | struct target_section_table *table = target_get_section_table (target); |
0542c86d | 1257 | struct target_section *secp; |
07b82ea5 PA |
1258 | |
1259 | if (table == NULL) | |
1260 | return NULL; | |
1261 | ||
1262 | for (secp = table->sections; secp < table->sections_end; secp++) | |
8db32d44 AC |
1263 | { |
1264 | if (addr >= secp->addr && addr < secp->endaddr) | |
1265 | return secp; | |
1266 | } | |
1267 | return NULL; | |
1268 | } | |
1269 | ||
7f79c47e DE |
1270 | /* Perform a partial memory transfer. |
1271 | For docs see target.h, to_xfer_partial. */ | |
cf7a04e8 DJ |
1272 | |
1273 | static LONGEST | |
4e5d721f DE |
1274 | memory_xfer_partial (struct target_ops *ops, enum target_object object, |
1275 | void *readbuf, const void *writebuf, ULONGEST memaddr, | |
1276 | LONGEST len) | |
0779438d | 1277 | { |
cf7a04e8 DJ |
1278 | LONGEST res; |
1279 | int reg_len; | |
1280 | struct mem_region *region; | |
4e5d721f | 1281 | struct inferior *inf; |
cf7a04e8 DJ |
1282 | |
1283 | /* Zero length requests are ok and require no work. */ | |
1284 | if (len == 0) | |
1285 | return 0; | |
1286 | ||
07b82ea5 PA |
1287 | /* For accesses to unmapped overlay sections, read directly from |
1288 | files. Must do this first, as MEMADDR may need adjustment. */ | |
1289 | if (readbuf != NULL && overlay_debugging) | |
1290 | { | |
1291 | struct obj_section *section = find_pc_overlay (memaddr); | |
5d502164 | 1292 | |
07b82ea5 PA |
1293 | if (pc_in_unmapped_range (memaddr, section)) |
1294 | { | |
1295 | struct target_section_table *table | |
1296 | = target_get_section_table (ops); | |
1297 | const char *section_name = section->the_bfd_section->name; | |
5d502164 | 1298 | |
07b82ea5 PA |
1299 | memaddr = overlay_mapped_address (memaddr, section); |
1300 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
1301 | memaddr, len, | |
1302 | table->sections, | |
1303 | table->sections_end, | |
1304 | section_name); | |
1305 | } | |
1306 | } | |
1307 | ||
1308 | /* Try the executable files, if "trust-readonly-sections" is set. */ | |
cf7a04e8 DJ |
1309 | if (readbuf != NULL && trust_readonly) |
1310 | { | |
0542c86d | 1311 | struct target_section *secp; |
07b82ea5 | 1312 | struct target_section_table *table; |
cf7a04e8 DJ |
1313 | |
1314 | secp = target_section_by_addr (ops, memaddr); | |
1315 | if (secp != NULL | |
1316 | && (bfd_get_section_flags (secp->bfd, secp->the_bfd_section) | |
1317 | & SEC_READONLY)) | |
07b82ea5 PA |
1318 | { |
1319 | table = target_get_section_table (ops); | |
1320 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
1321 | memaddr, len, | |
1322 | table->sections, | |
1323 | table->sections_end, | |
1324 | NULL); | |
1325 | } | |
98646950 UW |
1326 | } |
1327 | ||
cf7a04e8 DJ |
1328 | /* Try GDB's internal data cache. */ |
1329 | region = lookup_mem_region (memaddr); | |
4b5752d0 VP |
1330 | /* region->hi == 0 means there's no upper bound. */ |
1331 | if (memaddr + len < region->hi || region->hi == 0) | |
cf7a04e8 DJ |
1332 | reg_len = len; |
1333 | else | |
1334 | reg_len = region->hi - memaddr; | |
1335 | ||
1336 | switch (region->attrib.mode) | |
1337 | { | |
1338 | case MEM_RO: | |
1339 | if (writebuf != NULL) | |
1340 | return -1; | |
1341 | break; | |
1342 | ||
1343 | case MEM_WO: | |
1344 | if (readbuf != NULL) | |
1345 | return -1; | |
1346 | break; | |
a76d924d DJ |
1347 | |
1348 | case MEM_FLASH: | |
1349 | /* We only support writing to flash during "load" for now. */ | |
1350 | if (writebuf != NULL) | |
1351 | error (_("Writing to flash memory forbidden in this context")); | |
1352 | break; | |
4b5752d0 VP |
1353 | |
1354 | case MEM_NONE: | |
1355 | return -1; | |
cf7a04e8 DJ |
1356 | } |
1357 | ||
6c95b8df PA |
1358 | if (!ptid_equal (inferior_ptid, null_ptid)) |
1359 | inf = find_inferior_pid (ptid_get_pid (inferior_ptid)); | |
1360 | else | |
1361 | inf = NULL; | |
4e5d721f DE |
1362 | |
1363 | if (inf != NULL | |
2f4d8875 PA |
1364 | /* The dcache reads whole cache lines; that doesn't play well |
1365 | with reading from a trace buffer, because reading outside of | |
1366 | the collected memory range fails. */ | |
1367 | && get_traceframe_number () == -1 | |
4e5d721f DE |
1368 | && (region->attrib.cache |
1369 | || (stack_cache_enabled_p && object == TARGET_OBJECT_STACK_MEMORY))) | |
cf7a04e8 | 1370 | { |
cf7a04e8 | 1371 | if (readbuf != NULL) |
25f122dc | 1372 | res = dcache_xfer_memory (ops, target_dcache, memaddr, readbuf, |
cf7a04e8 DJ |
1373 | reg_len, 0); |
1374 | else | |
1375 | /* FIXME drow/2006-08-09: If we're going to preserve const | |
1376 | correctness dcache_xfer_memory should take readbuf and | |
1377 | writebuf. */ | |
25f122dc | 1378 | res = dcache_xfer_memory (ops, target_dcache, memaddr, |
cf7a04e8 DJ |
1379 | (void *) writebuf, |
1380 | reg_len, 1); | |
1381 | if (res <= 0) | |
1382 | return -1; | |
1383 | else | |
8defab1a DJ |
1384 | { |
1385 | if (readbuf && !show_memory_breakpoints) | |
1386 | breakpoint_restore_shadows (readbuf, memaddr, reg_len); | |
1387 | return res; | |
1388 | } | |
cf7a04e8 DJ |
1389 | } |
1390 | ||
1391 | /* If none of those methods found the memory we wanted, fall back | |
1392 | to a target partial transfer. Normally a single call to | |
1393 | to_xfer_partial is enough; if it doesn't recognize an object | |
1394 | it will call the to_xfer_partial of the next target down. | |
1395 | But for memory this won't do. Memory is the only target | |
1396 | object which can be read from more than one valid target. | |
1397 | A core file, for instance, could have some of memory but | |
1398 | delegate other bits to the target below it. So, we must | |
1399 | manually try all targets. */ | |
1400 | ||
1401 | do | |
1402 | { | |
1403 | res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
4b5752d0 | 1404 | readbuf, writebuf, memaddr, reg_len); |
cf7a04e8 | 1405 | if (res > 0) |
8defab1a | 1406 | break; |
cf7a04e8 | 1407 | |
5ad3a4ca DJ |
1408 | /* We want to continue past core files to executables, but not |
1409 | past a running target's memory. */ | |
c35b1492 | 1410 | if (ops->to_has_all_memory (ops)) |
8defab1a | 1411 | break; |
5ad3a4ca | 1412 | |
cf7a04e8 DJ |
1413 | ops = ops->beneath; |
1414 | } | |
1415 | while (ops != NULL); | |
1416 | ||
e8c9e0a1 | 1417 | if (res > 0 && readbuf != NULL && !show_memory_breakpoints) |
8defab1a DJ |
1418 | breakpoint_restore_shadows (readbuf, memaddr, reg_len); |
1419 | ||
41dcd03f DE |
1420 | /* Make sure the cache gets updated no matter what - if we are writing |
1421 | to the stack. Even if this write is not tagged as such, we still need | |
1422 | to update the cache. */ | |
1423 | ||
1424 | if (res > 0 | |
1425 | && inf != NULL | |
1426 | && writebuf != NULL | |
1427 | && !region->attrib.cache | |
1428 | && stack_cache_enabled_p | |
1429 | && object != TARGET_OBJECT_STACK_MEMORY) | |
1430 | { | |
7d4f32d3 | 1431 | dcache_update (target_dcache, memaddr, (void *) writebuf, res); |
41dcd03f DE |
1432 | } |
1433 | ||
cf7a04e8 DJ |
1434 | /* If we still haven't got anything, return the last error. We |
1435 | give up. */ | |
1436 | return res; | |
0779438d AC |
1437 | } |
1438 | ||
8defab1a DJ |
1439 | static void |
1440 | restore_show_memory_breakpoints (void *arg) | |
1441 | { | |
1442 | show_memory_breakpoints = (uintptr_t) arg; | |
1443 | } | |
1444 | ||
1445 | struct cleanup * | |
1446 | make_show_memory_breakpoints_cleanup (int show) | |
1447 | { | |
1448 | int current = show_memory_breakpoints; | |
8defab1a | 1449 | |
5d502164 | 1450 | show_memory_breakpoints = show; |
8defab1a DJ |
1451 | return make_cleanup (restore_show_memory_breakpoints, |
1452 | (void *) (uintptr_t) current); | |
1453 | } | |
1454 | ||
7f79c47e DE |
1455 | /* For docs see target.h, to_xfer_partial. */ |
1456 | ||
27394598 AC |
1457 | static LONGEST |
1458 | target_xfer_partial (struct target_ops *ops, | |
1459 | enum target_object object, const char *annex, | |
1460 | void *readbuf, const void *writebuf, | |
1461 | ULONGEST offset, LONGEST len) | |
1462 | { | |
1463 | LONGEST retval; | |
1464 | ||
1465 | gdb_assert (ops->to_xfer_partial != NULL); | |
cf7a04e8 | 1466 | |
d914c394 SS |
1467 | if (writebuf && !may_write_memory) |
1468 | error (_("Writing to memory is not allowed (addr %s, len %s)"), | |
1469 | core_addr_to_string_nz (offset), plongest (len)); | |
1470 | ||
cf7a04e8 DJ |
1471 | /* If this is a memory transfer, let the memory-specific code |
1472 | have a look at it instead. Memory transfers are more | |
1473 | complicated. */ | |
4e5d721f DE |
1474 | if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY) |
1475 | retval = memory_xfer_partial (ops, object, readbuf, | |
1476 | writebuf, offset, len); | |
cf7a04e8 DJ |
1477 | else |
1478 | { | |
1479 | enum target_object raw_object = object; | |
1480 | ||
1481 | /* If this is a raw memory transfer, request the normal | |
1482 | memory object from other layers. */ | |
1483 | if (raw_object == TARGET_OBJECT_RAW_MEMORY) | |
1484 | raw_object = TARGET_OBJECT_MEMORY; | |
1485 | ||
1486 | retval = ops->to_xfer_partial (ops, raw_object, annex, readbuf, | |
1487 | writebuf, offset, len); | |
1488 | } | |
1489 | ||
27394598 AC |
1490 | if (targetdebug) |
1491 | { | |
1492 | const unsigned char *myaddr = NULL; | |
1493 | ||
1494 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
1495 | "%s:target_xfer_partial " |
1496 | "(%d, %s, %s, %s, %s, %s) = %s", | |
27394598 AC |
1497 | ops->to_shortname, |
1498 | (int) object, | |
1499 | (annex ? annex : "(null)"), | |
53b71562 JB |
1500 | host_address_to_string (readbuf), |
1501 | host_address_to_string (writebuf), | |
0b1553bc UW |
1502 | core_addr_to_string_nz (offset), |
1503 | plongest (len), plongest (retval)); | |
27394598 AC |
1504 | |
1505 | if (readbuf) | |
1506 | myaddr = readbuf; | |
1507 | if (writebuf) | |
1508 | myaddr = writebuf; | |
1509 | if (retval > 0 && myaddr != NULL) | |
1510 | { | |
1511 | int i; | |
2bc416ba | 1512 | |
27394598 AC |
1513 | fputs_unfiltered (", bytes =", gdb_stdlog); |
1514 | for (i = 0; i < retval; i++) | |
1515 | { | |
53b71562 | 1516 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1517 | { |
1518 | if (targetdebug < 2 && i > 0) | |
1519 | { | |
1520 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
1521 | break; | |
1522 | } | |
1523 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1524 | } | |
2bc416ba | 1525 | |
27394598 AC |
1526 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
1527 | } | |
1528 | } | |
2bc416ba | 1529 | |
27394598 AC |
1530 | fputc_unfiltered ('\n', gdb_stdlog); |
1531 | } | |
1532 | return retval; | |
1533 | } | |
1534 | ||
c906108c SS |
1535 | /* Read LEN bytes of target memory at address MEMADDR, placing the results in |
1536 | GDB's memory at MYADDR. Returns either 0 for success or an errno value | |
1537 | if any error occurs. | |
1538 | ||
1539 | If an error occurs, no guarantee is made about the contents of the data at | |
1540 | MYADDR. In particular, the caller should not depend upon partial reads | |
1541 | filling the buffer with good data. There is no way for the caller to know | |
1542 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 | 1543 | deal with partial reads should call target_read (which will retry until |
c378eb4e | 1544 | it makes no progress, and then return how much was transferred). */ |
c906108c SS |
1545 | |
1546 | int | |
fc1a4b47 | 1547 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 1548 | { |
c35b1492 PA |
1549 | /* Dispatch to the topmost target, not the flattened current_target. |
1550 | Memory accesses check target->to_has_(all_)memory, and the | |
1551 | flattened target doesn't inherit those. */ | |
1552 | if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1553 | myaddr, memaddr, len) == len) |
1554 | return 0; | |
0779438d | 1555 | else |
cf7a04e8 | 1556 | return EIO; |
c906108c SS |
1557 | } |
1558 | ||
4e5d721f DE |
1559 | /* Like target_read_memory, but specify explicitly that this is a read from |
1560 | the target's stack. This may trigger different cache behavior. */ | |
1561 | ||
1562 | int | |
1563 | target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, int len) | |
1564 | { | |
1565 | /* Dispatch to the topmost target, not the flattened current_target. | |
1566 | Memory accesses check target->to_has_(all_)memory, and the | |
1567 | flattened target doesn't inherit those. */ | |
1568 | ||
1569 | if (target_read (current_target.beneath, TARGET_OBJECT_STACK_MEMORY, NULL, | |
1570 | myaddr, memaddr, len) == len) | |
1571 | return 0; | |
1572 | else | |
1573 | return EIO; | |
1574 | } | |
1575 | ||
7f79c47e DE |
1576 | /* Write LEN bytes from MYADDR to target memory at address MEMADDR. |
1577 | Returns either 0 for success or an errno value if any error occurs. | |
1578 | If an error occurs, no guarantee is made about how much data got written. | |
1579 | Callers that can deal with partial writes should call target_write. */ | |
1580 | ||
c906108c | 1581 | int |
fc1a4b47 | 1582 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) |
c906108c | 1583 | { |
c35b1492 PA |
1584 | /* Dispatch to the topmost target, not the flattened current_target. |
1585 | Memory accesses check target->to_has_(all_)memory, and the | |
1586 | flattened target doesn't inherit those. */ | |
1587 | if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1588 | myaddr, memaddr, len) == len) |
1589 | return 0; | |
0779438d | 1590 | else |
cf7a04e8 | 1591 | return EIO; |
c906108c | 1592 | } |
c5aa993b | 1593 | |
fd79ecee DJ |
1594 | /* Fetch the target's memory map. */ |
1595 | ||
1596 | VEC(mem_region_s) * | |
1597 | target_memory_map (void) | |
1598 | { | |
1599 | VEC(mem_region_s) *result; | |
1600 | struct mem_region *last_one, *this_one; | |
1601 | int ix; | |
1602 | struct target_ops *t; | |
1603 | ||
1604 | if (targetdebug) | |
1605 | fprintf_unfiltered (gdb_stdlog, "target_memory_map ()\n"); | |
1606 | ||
1607 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1608 | if (t->to_memory_map != NULL) | |
1609 | break; | |
1610 | ||
1611 | if (t == NULL) | |
1612 | return NULL; | |
1613 | ||
1614 | result = t->to_memory_map (t); | |
1615 | if (result == NULL) | |
1616 | return NULL; | |
1617 | ||
1618 | qsort (VEC_address (mem_region_s, result), | |
1619 | VEC_length (mem_region_s, result), | |
1620 | sizeof (struct mem_region), mem_region_cmp); | |
1621 | ||
1622 | /* Check that regions do not overlap. Simultaneously assign | |
1623 | a numbering for the "mem" commands to use to refer to | |
1624 | each region. */ | |
1625 | last_one = NULL; | |
1626 | for (ix = 0; VEC_iterate (mem_region_s, result, ix, this_one); ix++) | |
1627 | { | |
1628 | this_one->number = ix; | |
1629 | ||
1630 | if (last_one && last_one->hi > this_one->lo) | |
1631 | { | |
1632 | warning (_("Overlapping regions in memory map: ignoring")); | |
1633 | VEC_free (mem_region_s, result); | |
1634 | return NULL; | |
1635 | } | |
1636 | last_one = this_one; | |
1637 | } | |
1638 | ||
1639 | return result; | |
1640 | } | |
1641 | ||
a76d924d DJ |
1642 | void |
1643 | target_flash_erase (ULONGEST address, LONGEST length) | |
1644 | { | |
1645 | struct target_ops *t; | |
1646 | ||
1647 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1648 | if (t->to_flash_erase != NULL) | |
5d502164 MS |
1649 | { |
1650 | if (targetdebug) | |
1651 | fprintf_unfiltered (gdb_stdlog, "target_flash_erase (%s, %s)\n", | |
1652 | hex_string (address), phex (length, 0)); | |
1653 | t->to_flash_erase (t, address, length); | |
1654 | return; | |
1655 | } | |
a76d924d DJ |
1656 | |
1657 | tcomplain (); | |
1658 | } | |
1659 | ||
1660 | void | |
1661 | target_flash_done (void) | |
1662 | { | |
1663 | struct target_ops *t; | |
1664 | ||
1665 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1666 | if (t->to_flash_done != NULL) | |
5d502164 MS |
1667 | { |
1668 | if (targetdebug) | |
1669 | fprintf_unfiltered (gdb_stdlog, "target_flash_done\n"); | |
1670 | t->to_flash_done (t); | |
1671 | return; | |
1672 | } | |
a76d924d DJ |
1673 | |
1674 | tcomplain (); | |
1675 | } | |
1676 | ||
920d2a44 AC |
1677 | static void |
1678 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1679 | struct cmd_list_element *c, const char *value) | |
1680 | { | |
3e43a32a MS |
1681 | fprintf_filtered (file, |
1682 | _("Mode for reading from readonly sections is %s.\n"), | |
920d2a44 AC |
1683 | value); |
1684 | } | |
3a11626d | 1685 | |
1e3ff5ad AC |
1686 | /* More generic transfers. */ |
1687 | ||
0088c768 | 1688 | static LONGEST |
8aa91c1e | 1689 | default_xfer_partial (struct target_ops *ops, enum target_object object, |
2bc416ba | 1690 | const char *annex, gdb_byte *readbuf, |
1b0ba102 | 1691 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) |
0088c768 AC |
1692 | { |
1693 | if (object == TARGET_OBJECT_MEMORY | |
c8e73a31 AC |
1694 | && ops->deprecated_xfer_memory != NULL) |
1695 | /* If available, fall back to the target's | |
1696 | "deprecated_xfer_memory" method. */ | |
0088c768 | 1697 | { |
4b8a223f | 1698 | int xfered = -1; |
5d502164 | 1699 | |
0088c768 | 1700 | errno = 0; |
4b8a223f AC |
1701 | if (writebuf != NULL) |
1702 | { | |
1703 | void *buffer = xmalloc (len); | |
1704 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |
5d502164 | 1705 | |
4b8a223f | 1706 | memcpy (buffer, writebuf, len); |
c8e73a31 AC |
1707 | xfered = ops->deprecated_xfer_memory (offset, buffer, len, |
1708 | 1/*write*/, NULL, ops); | |
4b8a223f AC |
1709 | do_cleanups (cleanup); |
1710 | } | |
1711 | if (readbuf != NULL) | |
244e85c8 MS |
1712 | xfered = ops->deprecated_xfer_memory (offset, readbuf, len, |
1713 | 0/*read*/, NULL, ops); | |
0088c768 AC |
1714 | if (xfered > 0) |
1715 | return xfered; | |
1716 | else if (xfered == 0 && errno == 0) | |
c8e73a31 AC |
1717 | /* "deprecated_xfer_memory" uses 0, cross checked against |
1718 | ERRNO as one indication of an error. */ | |
0088c768 AC |
1719 | return 0; |
1720 | else | |
1721 | return -1; | |
1722 | } | |
1723 | else if (ops->beneath != NULL) | |
cf7a04e8 DJ |
1724 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, |
1725 | readbuf, writebuf, offset, len); | |
1726 | else | |
1727 | return -1; | |
1728 | } | |
1729 | ||
1730 | /* The xfer_partial handler for the topmost target. Unlike the default, | |
1731 | it does not need to handle memory specially; it just passes all | |
1732 | requests down the stack. */ | |
1733 | ||
1734 | static LONGEST | |
1735 | current_xfer_partial (struct target_ops *ops, enum target_object object, | |
1736 | const char *annex, gdb_byte *readbuf, | |
1737 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1738 | { | |
1739 | if (ops->beneath != NULL) | |
1740 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, | |
1741 | readbuf, writebuf, offset, len); | |
0088c768 AC |
1742 | else |
1743 | return -1; | |
1744 | } | |
1745 | ||
7f79c47e | 1746 | /* Target vector read/write partial wrapper functions. */ |
0088c768 | 1747 | |
13547ab6 | 1748 | static LONGEST |
1e3ff5ad AC |
1749 | target_read_partial (struct target_ops *ops, |
1750 | enum target_object object, | |
1b0ba102 | 1751 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1752 | ULONGEST offset, LONGEST len) |
1753 | { | |
27394598 | 1754 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len); |
1e3ff5ad AC |
1755 | } |
1756 | ||
13547ab6 | 1757 | static LONGEST |
1e3ff5ad AC |
1758 | target_write_partial (struct target_ops *ops, |
1759 | enum target_object object, | |
1b0ba102 | 1760 | const char *annex, const gdb_byte *buf, |
1e3ff5ad AC |
1761 | ULONGEST offset, LONGEST len) |
1762 | { | |
27394598 | 1763 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len); |
1e3ff5ad AC |
1764 | } |
1765 | ||
1766 | /* Wrappers to perform the full transfer. */ | |
7f79c47e DE |
1767 | |
1768 | /* For docs on target_read see target.h. */ | |
1769 | ||
1e3ff5ad AC |
1770 | LONGEST |
1771 | target_read (struct target_ops *ops, | |
1772 | enum target_object object, | |
1b0ba102 | 1773 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1774 | ULONGEST offset, LONGEST len) |
1775 | { | |
1776 | LONGEST xfered = 0; | |
5d502164 | 1777 | |
1e3ff5ad AC |
1778 | while (xfered < len) |
1779 | { | |
0088c768 | 1780 | LONGEST xfer = target_read_partial (ops, object, annex, |
fc1a4b47 | 1781 | (gdb_byte *) buf + xfered, |
0088c768 | 1782 | offset + xfered, len - xfered); |
5d502164 | 1783 | |
1e3ff5ad | 1784 | /* Call an observer, notifying them of the xfer progress? */ |
13547ab6 DJ |
1785 | if (xfer == 0) |
1786 | return xfered; | |
1787 | if (xfer < 0) | |
0088c768 | 1788 | return -1; |
1e3ff5ad AC |
1789 | xfered += xfer; |
1790 | QUIT; | |
1791 | } | |
1792 | return len; | |
1793 | } | |
1794 | ||
8dedea02 VP |
1795 | /** Assuming that the entire [begin, end) range of memory cannot be read, |
1796 | try to read whatever subrange is possible to read. | |
1797 | ||
1798 | The function results, in RESULT, either zero or one memory block. | |
1799 | If there's a readable subrange at the beginning, it is completely | |
c378eb4e | 1800 | read and returned. Any further readable subrange will not be read. |
8dedea02 VP |
1801 | Otherwise, if there's a readable subrange at the end, it will be |
1802 | completely read and returned. Any readable subranges before it (obviously, | |
c378eb4e | 1803 | not starting at the beginning), will be ignored. In other cases -- |
8dedea02 VP |
1804 | either no readable subrange, or readable subrange (s) that is neither |
1805 | at the beginning, or end, nothing is returned. | |
1806 | ||
1807 | The purpose of this function is to handle a read across a boundary of | |
c378eb4e | 1808 | accessible memory in a case when memory map is not available. The above |
8dedea02 | 1809 | restrictions are fine for this case, but will give incorrect results if |
c378eb4e | 1810 | the memory is 'patchy'. However, supporting 'patchy' memory would require |
8dedea02 VP |
1811 | trying to read every single byte, and it seems unacceptable solution. |
1812 | Explicit memory map is recommended for this case -- and | |
3e43a32a MS |
1813 | target_read_memory_robust will take care of reading multiple ranges |
1814 | then. */ | |
8dedea02 VP |
1815 | |
1816 | static void | |
3e43a32a MS |
1817 | read_whatever_is_readable (struct target_ops *ops, |
1818 | ULONGEST begin, ULONGEST end, | |
8dedea02 | 1819 | VEC(memory_read_result_s) **result) |
d5086790 | 1820 | { |
8dedea02 VP |
1821 | gdb_byte *buf = xmalloc (end-begin); |
1822 | ULONGEST current_begin = begin; | |
1823 | ULONGEST current_end = end; | |
1824 | int forward; | |
1825 | memory_read_result_s r; | |
1826 | ||
1827 | /* If we previously failed to read 1 byte, nothing can be done here. */ | |
1828 | if (end - begin <= 1) | |
1829 | return; | |
1830 | ||
1831 | /* Check that either first or the last byte is readable, and give up | |
c378eb4e | 1832 | if not. This heuristic is meant to permit reading accessible memory |
8dedea02 VP |
1833 | at the boundary of accessible region. */ |
1834 | if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
1835 | buf, begin, 1) == 1) | |
1836 | { | |
1837 | forward = 1; | |
1838 | ++current_begin; | |
1839 | } | |
1840 | else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
1841 | buf + (end-begin) - 1, end - 1, 1) == 1) | |
1842 | { | |
1843 | forward = 0; | |
1844 | --current_end; | |
1845 | } | |
1846 | else | |
1847 | { | |
1848 | return; | |
1849 | } | |
1850 | ||
1851 | /* Loop invariant is that the [current_begin, current_end) was previously | |
1852 | found to be not readable as a whole. | |
1853 | ||
1854 | Note loop condition -- if the range has 1 byte, we can't divide the range | |
1855 | so there's no point trying further. */ | |
1856 | while (current_end - current_begin > 1) | |
1857 | { | |
1858 | ULONGEST first_half_begin, first_half_end; | |
1859 | ULONGEST second_half_begin, second_half_end; | |
1860 | LONGEST xfer; | |
5d502164 | 1861 | |
8dedea02 VP |
1862 | ULONGEST middle = current_begin + (current_end - current_begin)/2; |
1863 | if (forward) | |
1864 | { | |
1865 | first_half_begin = current_begin; | |
1866 | first_half_end = middle; | |
1867 | second_half_begin = middle; | |
1868 | second_half_end = current_end; | |
1869 | } | |
1870 | else | |
1871 | { | |
1872 | first_half_begin = middle; | |
1873 | first_half_end = current_end; | |
1874 | second_half_begin = current_begin; | |
1875 | second_half_end = middle; | |
1876 | } | |
1877 | ||
1878 | xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
1879 | buf + (first_half_begin - begin), | |
1880 | first_half_begin, | |
1881 | first_half_end - first_half_begin); | |
1882 | ||
1883 | if (xfer == first_half_end - first_half_begin) | |
1884 | { | |
c378eb4e | 1885 | /* This half reads up fine. So, the error must be in the |
3e43a32a | 1886 | other half. */ |
8dedea02 VP |
1887 | current_begin = second_half_begin; |
1888 | current_end = second_half_end; | |
1889 | } | |
1890 | else | |
1891 | { | |
c378eb4e MS |
1892 | /* This half is not readable. Because we've tried one byte, we |
1893 | know some part of this half if actually redable. Go to the next | |
8dedea02 VP |
1894 | iteration to divide again and try to read. |
1895 | ||
1896 | We don't handle the other half, because this function only tries | |
1897 | to read a single readable subrange. */ | |
1898 | current_begin = first_half_begin; | |
1899 | current_end = first_half_end; | |
1900 | } | |
1901 | } | |
1902 | ||
1903 | if (forward) | |
1904 | { | |
1905 | /* The [begin, current_begin) range has been read. */ | |
1906 | r.begin = begin; | |
1907 | r.end = current_begin; | |
1908 | r.data = buf; | |
1909 | } | |
1910 | else | |
1911 | { | |
1912 | /* The [current_end, end) range has been read. */ | |
1913 | LONGEST rlen = end - current_end; | |
1914 | r.data = xmalloc (rlen); | |
1915 | memcpy (r.data, buf + current_end - begin, rlen); | |
1916 | r.begin = current_end; | |
1917 | r.end = end; | |
1918 | xfree (buf); | |
1919 | } | |
1920 | VEC_safe_push(memory_read_result_s, (*result), &r); | |
1921 | } | |
1922 | ||
1923 | void | |
1924 | free_memory_read_result_vector (void *x) | |
1925 | { | |
1926 | VEC(memory_read_result_s) *v = x; | |
1927 | memory_read_result_s *current; | |
1928 | int ix; | |
1929 | ||
1930 | for (ix = 0; VEC_iterate (memory_read_result_s, v, ix, current); ++ix) | |
1931 | { | |
1932 | xfree (current->data); | |
1933 | } | |
1934 | VEC_free (memory_read_result_s, v); | |
1935 | } | |
1936 | ||
1937 | VEC(memory_read_result_s) * | |
1938 | read_memory_robust (struct target_ops *ops, ULONGEST offset, LONGEST len) | |
1939 | { | |
1940 | VEC(memory_read_result_s) *result = 0; | |
1941 | ||
1942 | LONGEST xfered = 0; | |
d5086790 VP |
1943 | while (xfered < len) |
1944 | { | |
8dedea02 VP |
1945 | struct mem_region *region = lookup_mem_region (offset + xfered); |
1946 | LONGEST rlen; | |
5d502164 | 1947 | |
8dedea02 VP |
1948 | /* If there is no explicit region, a fake one should be created. */ |
1949 | gdb_assert (region); | |
1950 | ||
1951 | if (region->hi == 0) | |
1952 | rlen = len - xfered; | |
1953 | else | |
1954 | rlen = region->hi - offset; | |
1955 | ||
1956 | if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO) | |
d5086790 | 1957 | { |
c378eb4e | 1958 | /* Cannot read this region. Note that we can end up here only |
8dedea02 VP |
1959 | if the region is explicitly marked inaccessible, or |
1960 | 'inaccessible-by-default' is in effect. */ | |
1961 | xfered += rlen; | |
1962 | } | |
1963 | else | |
1964 | { | |
1965 | LONGEST to_read = min (len - xfered, rlen); | |
1966 | gdb_byte *buffer = (gdb_byte *)xmalloc (to_read); | |
1967 | ||
1968 | LONGEST xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
1969 | (gdb_byte *) buffer, | |
1970 | offset + xfered, to_read); | |
1971 | /* Call an observer, notifying them of the xfer progress? */ | |
d5086790 | 1972 | if (xfer <= 0) |
d5086790 | 1973 | { |
c378eb4e | 1974 | /* Got an error reading full chunk. See if maybe we can read |
8dedea02 VP |
1975 | some subrange. */ |
1976 | xfree (buffer); | |
3e43a32a MS |
1977 | read_whatever_is_readable (ops, offset + xfered, |
1978 | offset + xfered + to_read, &result); | |
8dedea02 | 1979 | xfered += to_read; |
d5086790 | 1980 | } |
8dedea02 VP |
1981 | else |
1982 | { | |
1983 | struct memory_read_result r; | |
1984 | r.data = buffer; | |
1985 | r.begin = offset + xfered; | |
1986 | r.end = r.begin + xfer; | |
1987 | VEC_safe_push (memory_read_result_s, result, &r); | |
1988 | xfered += xfer; | |
1989 | } | |
1990 | QUIT; | |
d5086790 | 1991 | } |
d5086790 | 1992 | } |
8dedea02 | 1993 | return result; |
d5086790 VP |
1994 | } |
1995 | ||
8dedea02 | 1996 | |
cf7a04e8 DJ |
1997 | /* An alternative to target_write with progress callbacks. */ |
1998 | ||
1e3ff5ad | 1999 | LONGEST |
cf7a04e8 DJ |
2000 | target_write_with_progress (struct target_ops *ops, |
2001 | enum target_object object, | |
2002 | const char *annex, const gdb_byte *buf, | |
2003 | ULONGEST offset, LONGEST len, | |
2004 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad AC |
2005 | { |
2006 | LONGEST xfered = 0; | |
a76d924d DJ |
2007 | |
2008 | /* Give the progress callback a chance to set up. */ | |
2009 | if (progress) | |
2010 | (*progress) (0, baton); | |
2011 | ||
1e3ff5ad AC |
2012 | while (xfered < len) |
2013 | { | |
2014 | LONGEST xfer = target_write_partial (ops, object, annex, | |
fc1a4b47 | 2015 | (gdb_byte *) buf + xfered, |
1e3ff5ad | 2016 | offset + xfered, len - xfered); |
cf7a04e8 | 2017 | |
13547ab6 DJ |
2018 | if (xfer == 0) |
2019 | return xfered; | |
2020 | if (xfer < 0) | |
0088c768 | 2021 | return -1; |
cf7a04e8 DJ |
2022 | |
2023 | if (progress) | |
2024 | (*progress) (xfer, baton); | |
2025 | ||
1e3ff5ad AC |
2026 | xfered += xfer; |
2027 | QUIT; | |
2028 | } | |
2029 | return len; | |
2030 | } | |
2031 | ||
7f79c47e DE |
2032 | /* For docs on target_write see target.h. */ |
2033 | ||
cf7a04e8 DJ |
2034 | LONGEST |
2035 | target_write (struct target_ops *ops, | |
2036 | enum target_object object, | |
2037 | const char *annex, const gdb_byte *buf, | |
2038 | ULONGEST offset, LONGEST len) | |
2039 | { | |
2040 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
2041 | NULL, NULL); | |
2042 | } | |
2043 | ||
159f81f3 DJ |
2044 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
2045 | the size of the transferred data. PADDING additional bytes are | |
2046 | available in *BUF_P. This is a helper function for | |
2047 | target_read_alloc; see the declaration of that function for more | |
2048 | information. */ | |
13547ab6 | 2049 | |
159f81f3 DJ |
2050 | static LONGEST |
2051 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, | |
2052 | const char *annex, gdb_byte **buf_p, int padding) | |
13547ab6 DJ |
2053 | { |
2054 | size_t buf_alloc, buf_pos; | |
2055 | gdb_byte *buf; | |
2056 | LONGEST n; | |
2057 | ||
2058 | /* This function does not have a length parameter; it reads the | |
2059 | entire OBJECT). Also, it doesn't support objects fetched partly | |
2060 | from one target and partly from another (in a different stratum, | |
2061 | e.g. a core file and an executable). Both reasons make it | |
2062 | unsuitable for reading memory. */ | |
2063 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
2064 | ||
2065 | /* Start by reading up to 4K at a time. The target will throttle | |
2066 | this number down if necessary. */ | |
2067 | buf_alloc = 4096; | |
2068 | buf = xmalloc (buf_alloc); | |
2069 | buf_pos = 0; | |
2070 | while (1) | |
2071 | { | |
2072 | n = target_read_partial (ops, object, annex, &buf[buf_pos], | |
159f81f3 | 2073 | buf_pos, buf_alloc - buf_pos - padding); |
13547ab6 DJ |
2074 | if (n < 0) |
2075 | { | |
2076 | /* An error occurred. */ | |
2077 | xfree (buf); | |
2078 | return -1; | |
2079 | } | |
2080 | else if (n == 0) | |
2081 | { | |
2082 | /* Read all there was. */ | |
2083 | if (buf_pos == 0) | |
2084 | xfree (buf); | |
2085 | else | |
2086 | *buf_p = buf; | |
2087 | return buf_pos; | |
2088 | } | |
2089 | ||
2090 | buf_pos += n; | |
2091 | ||
2092 | /* If the buffer is filling up, expand it. */ | |
2093 | if (buf_alloc < buf_pos * 2) | |
2094 | { | |
2095 | buf_alloc *= 2; | |
2096 | buf = xrealloc (buf, buf_alloc); | |
2097 | } | |
2098 | ||
2099 | QUIT; | |
2100 | } | |
2101 | } | |
2102 | ||
159f81f3 DJ |
2103 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
2104 | the size of the transferred data. See the declaration in "target.h" | |
2105 | function for more information about the return value. */ | |
2106 | ||
2107 | LONGEST | |
2108 | target_read_alloc (struct target_ops *ops, enum target_object object, | |
2109 | const char *annex, gdb_byte **buf_p) | |
2110 | { | |
2111 | return target_read_alloc_1 (ops, object, annex, buf_p, 0); | |
2112 | } | |
2113 | ||
2114 | /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and | |
2115 | returned as a string, allocated using xmalloc. If an error occurs | |
2116 | or the transfer is unsupported, NULL is returned. Empty objects | |
2117 | are returned as allocated but empty strings. A warning is issued | |
2118 | if the result contains any embedded NUL bytes. */ | |
2119 | ||
2120 | char * | |
2121 | target_read_stralloc (struct target_ops *ops, enum target_object object, | |
2122 | const char *annex) | |
2123 | { | |
2124 | gdb_byte *buffer; | |
2125 | LONGEST transferred; | |
2126 | ||
2127 | transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1); | |
2128 | ||
2129 | if (transferred < 0) | |
2130 | return NULL; | |
2131 | ||
2132 | if (transferred == 0) | |
2133 | return xstrdup (""); | |
2134 | ||
2135 | buffer[transferred] = 0; | |
2136 | if (strlen (buffer) < transferred) | |
2137 | warning (_("target object %d, annex %s, " | |
2138 | "contained unexpected null characters"), | |
2139 | (int) object, annex ? annex : "(none)"); | |
2140 | ||
2141 | return (char *) buffer; | |
2142 | } | |
2143 | ||
b6591e8b AC |
2144 | /* Memory transfer methods. */ |
2145 | ||
2146 | void | |
1b0ba102 | 2147 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
2148 | LONGEST len) |
2149 | { | |
07b82ea5 PA |
2150 | /* This method is used to read from an alternate, non-current |
2151 | target. This read must bypass the overlay support (as symbols | |
2152 | don't match this target), and GDB's internal cache (wrong cache | |
2153 | for this target). */ | |
2154 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) | |
b6591e8b AC |
2155 | != len) |
2156 | memory_error (EIO, addr); | |
2157 | } | |
2158 | ||
2159 | ULONGEST | |
5d502164 MS |
2160 | get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr, |
2161 | int len, enum bfd_endian byte_order) | |
b6591e8b | 2162 | { |
f6519ebc | 2163 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
2164 | |
2165 | gdb_assert (len <= sizeof (buf)); | |
2166 | get_target_memory (ops, addr, buf, len); | |
e17a4113 | 2167 | return extract_unsigned_integer (buf, len, byte_order); |
b6591e8b AC |
2168 | } |
2169 | ||
d914c394 SS |
2170 | int |
2171 | target_insert_breakpoint (struct gdbarch *gdbarch, | |
2172 | struct bp_target_info *bp_tgt) | |
2173 | { | |
2174 | if (!may_insert_breakpoints) | |
2175 | { | |
2176 | warning (_("May not insert breakpoints")); | |
2177 | return 1; | |
2178 | } | |
2179 | ||
2180 | return (*current_target.to_insert_breakpoint) (gdbarch, bp_tgt); | |
2181 | } | |
2182 | ||
2183 | int | |
2184 | target_remove_breakpoint (struct gdbarch *gdbarch, | |
2185 | struct bp_target_info *bp_tgt) | |
2186 | { | |
2187 | /* This is kind of a weird case to handle, but the permission might | |
2188 | have been changed after breakpoints were inserted - in which case | |
2189 | we should just take the user literally and assume that any | |
2190 | breakpoints should be left in place. */ | |
2191 | if (!may_insert_breakpoints) | |
2192 | { | |
2193 | warning (_("May not remove breakpoints")); | |
2194 | return 1; | |
2195 | } | |
2196 | ||
2197 | return (*current_target.to_remove_breakpoint) (gdbarch, bp_tgt); | |
2198 | } | |
2199 | ||
c906108c | 2200 | static void |
fba45db2 | 2201 | target_info (char *args, int from_tty) |
c906108c SS |
2202 | { |
2203 | struct target_ops *t; | |
c906108c | 2204 | int has_all_mem = 0; |
c5aa993b | 2205 | |
c906108c | 2206 | if (symfile_objfile != NULL) |
a3f17187 | 2207 | printf_unfiltered (_("Symbols from \"%s\".\n"), symfile_objfile->name); |
c906108c | 2208 | |
258b763a | 2209 | for (t = target_stack; t != NULL; t = t->beneath) |
c906108c | 2210 | { |
c35b1492 | 2211 | if (!(*t->to_has_memory) (t)) |
c906108c SS |
2212 | continue; |
2213 | ||
c5aa993b | 2214 | if ((int) (t->to_stratum) <= (int) dummy_stratum) |
c906108c SS |
2215 | continue; |
2216 | if (has_all_mem) | |
3e43a32a MS |
2217 | printf_unfiltered (_("\tWhile running this, " |
2218 | "GDB does not access memory from...\n")); | |
c5aa993b JM |
2219 | printf_unfiltered ("%s:\n", t->to_longname); |
2220 | (t->to_files_info) (t); | |
c35b1492 | 2221 | has_all_mem = (*t->to_has_all_memory) (t); |
c906108c SS |
2222 | } |
2223 | } | |
2224 | ||
fd79ecee DJ |
2225 | /* This function is called before any new inferior is created, e.g. |
2226 | by running a program, attaching, or connecting to a target. | |
2227 | It cleans up any state from previous invocations which might | |
2228 | change between runs. This is a subset of what target_preopen | |
2229 | resets (things which might change between targets). */ | |
2230 | ||
2231 | void | |
2232 | target_pre_inferior (int from_tty) | |
2233 | { | |
c378eb4e | 2234 | /* Clear out solib state. Otherwise the solib state of the previous |
b9db4ced | 2235 | inferior might have survived and is entirely wrong for the new |
c378eb4e | 2236 | target. This has been observed on GNU/Linux using glibc 2.3. How |
b9db4ced UW |
2237 | to reproduce: |
2238 | ||
2239 | bash$ ./foo& | |
2240 | [1] 4711 | |
2241 | bash$ ./foo& | |
2242 | [1] 4712 | |
2243 | bash$ gdb ./foo | |
2244 | [...] | |
2245 | (gdb) attach 4711 | |
2246 | (gdb) detach | |
2247 | (gdb) attach 4712 | |
2248 | Cannot access memory at address 0xdeadbeef | |
2249 | */ | |
b9db4ced | 2250 | |
50c71eaf PA |
2251 | /* In some OSs, the shared library list is the same/global/shared |
2252 | across inferiors. If code is shared between processes, so are | |
2253 | memory regions and features. */ | |
2254 | if (!gdbarch_has_global_solist (target_gdbarch)) | |
2255 | { | |
2256 | no_shared_libraries (NULL, from_tty); | |
2257 | ||
2258 | invalidate_target_mem_regions (); | |
424163ea | 2259 | |
50c71eaf PA |
2260 | target_clear_description (); |
2261 | } | |
fd79ecee DJ |
2262 | } |
2263 | ||
b8fa0bfa PA |
2264 | /* Callback for iterate_over_inferiors. Gets rid of the given |
2265 | inferior. */ | |
2266 | ||
2267 | static int | |
2268 | dispose_inferior (struct inferior *inf, void *args) | |
2269 | { | |
2270 | struct thread_info *thread; | |
2271 | ||
2272 | thread = any_thread_of_process (inf->pid); | |
2273 | if (thread) | |
2274 | { | |
2275 | switch_to_thread (thread->ptid); | |
2276 | ||
2277 | /* Core inferiors actually should be detached, not killed. */ | |
2278 | if (target_has_execution) | |
2279 | target_kill (); | |
2280 | else | |
2281 | target_detach (NULL, 0); | |
2282 | } | |
2283 | ||
2284 | return 0; | |
2285 | } | |
2286 | ||
c906108c SS |
2287 | /* This is to be called by the open routine before it does |
2288 | anything. */ | |
2289 | ||
2290 | void | |
fba45db2 | 2291 | target_preopen (int from_tty) |
c906108c | 2292 | { |
c5aa993b | 2293 | dont_repeat (); |
c906108c | 2294 | |
b8fa0bfa | 2295 | if (have_inferiors ()) |
c5aa993b | 2296 | { |
adf40b2e | 2297 | if (!from_tty |
b8fa0bfa PA |
2298 | || !have_live_inferiors () |
2299 | || query (_("A program is being debugged already. Kill it? "))) | |
2300 | iterate_over_inferiors (dispose_inferior, NULL); | |
c906108c | 2301 | else |
8a3fe4f8 | 2302 | error (_("Program not killed.")); |
c906108c SS |
2303 | } |
2304 | ||
2305 | /* Calling target_kill may remove the target from the stack. But if | |
2306 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
2307 | /* Leave the exec target, though. The user may be switching from a |
2308 | live process to a core of the same program. */ | |
2309 | pop_all_targets_above (file_stratum, 0); | |
fd79ecee DJ |
2310 | |
2311 | target_pre_inferior (from_tty); | |
c906108c SS |
2312 | } |
2313 | ||
2314 | /* Detach a target after doing deferred register stores. */ | |
2315 | ||
2316 | void | |
fba45db2 | 2317 | target_detach (char *args, int from_tty) |
c906108c | 2318 | { |
136d6dae VP |
2319 | struct target_ops* t; |
2320 | ||
2567c7d9 | 2321 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
2322 | /* Don't remove global breakpoints here. They're removed on |
2323 | disconnection from the target. */ | |
2324 | ; | |
2325 | else | |
2326 | /* If we're in breakpoints-always-inserted mode, have to remove | |
2327 | them before detaching. */ | |
6c95b8df | 2328 | remove_breakpoints_pid (PIDGET (inferior_ptid)); |
74960c60 | 2329 | |
24291992 PA |
2330 | prepare_for_detach (); |
2331 | ||
136d6dae VP |
2332 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2333 | { | |
2334 | if (t->to_detach != NULL) | |
2335 | { | |
2336 | t->to_detach (t, args, from_tty); | |
947b8855 PA |
2337 | if (targetdebug) |
2338 | fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n", | |
2339 | args, from_tty); | |
136d6dae VP |
2340 | return; |
2341 | } | |
2342 | } | |
2343 | ||
9b20d036 | 2344 | internal_error (__FILE__, __LINE__, _("could not find a target to detach")); |
c906108c SS |
2345 | } |
2346 | ||
6ad8ae5c DJ |
2347 | void |
2348 | target_disconnect (char *args, int from_tty) | |
2349 | { | |
597320e7 DJ |
2350 | struct target_ops *t; |
2351 | ||
50c71eaf PA |
2352 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
2353 | are global across processes, we have to remove them before | |
2354 | disconnecting. */ | |
74960c60 VP |
2355 | remove_breakpoints (); |
2356 | ||
597320e7 DJ |
2357 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2358 | if (t->to_disconnect != NULL) | |
2359 | { | |
2360 | if (targetdebug) | |
2361 | fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n", | |
2362 | args, from_tty); | |
2363 | t->to_disconnect (t, args, from_tty); | |
2364 | return; | |
2365 | } | |
2366 | ||
2367 | tcomplain (); | |
6ad8ae5c DJ |
2368 | } |
2369 | ||
117de6a9 | 2370 | ptid_t |
47608cb1 | 2371 | target_wait (ptid_t ptid, struct target_waitstatus *status, int options) |
117de6a9 PA |
2372 | { |
2373 | struct target_ops *t; | |
2374 | ||
2375 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2376 | { | |
2377 | if (t->to_wait != NULL) | |
2378 | { | |
47608cb1 | 2379 | ptid_t retval = (*t->to_wait) (t, ptid, status, options); |
117de6a9 PA |
2380 | |
2381 | if (targetdebug) | |
2382 | { | |
2383 | char *status_string; | |
2384 | ||
2385 | status_string = target_waitstatus_to_string (status); | |
2386 | fprintf_unfiltered (gdb_stdlog, | |
2387 | "target_wait (%d, status) = %d, %s\n", | |
2388 | PIDGET (ptid), PIDGET (retval), | |
2389 | status_string); | |
2390 | xfree (status_string); | |
2391 | } | |
2392 | ||
2393 | return retval; | |
2394 | } | |
2395 | } | |
2396 | ||
2397 | noprocess (); | |
2398 | } | |
2399 | ||
2400 | char * | |
2401 | target_pid_to_str (ptid_t ptid) | |
2402 | { | |
2403 | struct target_ops *t; | |
2404 | ||
2405 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2406 | { | |
2407 | if (t->to_pid_to_str != NULL) | |
2408 | return (*t->to_pid_to_str) (t, ptid); | |
2409 | } | |
2410 | ||
2411 | return normal_pid_to_str (ptid); | |
2412 | } | |
2413 | ||
4694da01 TT |
2414 | char * |
2415 | target_thread_name (struct thread_info *info) | |
2416 | { | |
2417 | struct target_ops *t; | |
2418 | ||
2419 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2420 | { | |
2421 | if (t->to_thread_name != NULL) | |
2422 | return (*t->to_thread_name) (info); | |
2423 | } | |
2424 | ||
2425 | return NULL; | |
2426 | } | |
2427 | ||
e1ac3328 VP |
2428 | void |
2429 | target_resume (ptid_t ptid, int step, enum target_signal signal) | |
2430 | { | |
28439f5e PA |
2431 | struct target_ops *t; |
2432 | ||
4e5d721f | 2433 | target_dcache_invalidate (); |
28439f5e PA |
2434 | |
2435 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2436 | { | |
2437 | if (t->to_resume != NULL) | |
2438 | { | |
2439 | t->to_resume (t, ptid, step, signal); | |
2440 | if (targetdebug) | |
2441 | fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n", | |
2442 | PIDGET (ptid), | |
2443 | step ? "step" : "continue", | |
2444 | target_signal_to_name (signal)); | |
2445 | ||
e66408ed | 2446 | registers_changed_ptid (ptid); |
28439f5e PA |
2447 | set_executing (ptid, 1); |
2448 | set_running (ptid, 1); | |
edb3359d | 2449 | clear_inline_frame_state (ptid); |
28439f5e PA |
2450 | return; |
2451 | } | |
2452 | } | |
2453 | ||
2454 | noprocess (); | |
e1ac3328 | 2455 | } |
ee057212 DJ |
2456 | /* Look through the list of possible targets for a target that can |
2457 | follow forks. */ | |
2458 | ||
2459 | int | |
2460 | target_follow_fork (int follow_child) | |
2461 | { | |
2462 | struct target_ops *t; | |
2463 | ||
2464 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2465 | { | |
2466 | if (t->to_follow_fork != NULL) | |
2467 | { | |
2468 | int retval = t->to_follow_fork (t, follow_child); | |
5d502164 | 2469 | |
ee057212 DJ |
2470 | if (targetdebug) |
2471 | fprintf_unfiltered (gdb_stdlog, "target_follow_fork (%d) = %d\n", | |
2472 | follow_child, retval); | |
2473 | return retval; | |
2474 | } | |
2475 | } | |
2476 | ||
2477 | /* Some target returned a fork event, but did not know how to follow it. */ | |
2478 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 2479 | _("could not find a target to follow fork")); |
ee057212 DJ |
2480 | } |
2481 | ||
136d6dae VP |
2482 | void |
2483 | target_mourn_inferior (void) | |
2484 | { | |
2485 | struct target_ops *t; | |
5d502164 | 2486 | |
136d6dae VP |
2487 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
2488 | { | |
2489 | if (t->to_mourn_inferior != NULL) | |
2490 | { | |
2491 | t->to_mourn_inferior (t); | |
947b8855 PA |
2492 | if (targetdebug) |
2493 | fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n"); | |
efbd6e75 JB |
2494 | |
2495 | /* We no longer need to keep handles on any of the object files. | |
2496 | Make sure to release them to avoid unnecessarily locking any | |
2497 | of them while we're not actually debugging. */ | |
2498 | bfd_cache_close_all (); | |
2499 | ||
136d6dae VP |
2500 | return; |
2501 | } | |
2502 | } | |
2503 | ||
2504 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 2505 | _("could not find a target to follow mourn inferior")); |
136d6dae VP |
2506 | } |
2507 | ||
424163ea DJ |
2508 | /* Look for a target which can describe architectural features, starting |
2509 | from TARGET. If we find one, return its description. */ | |
2510 | ||
2511 | const struct target_desc * | |
2512 | target_read_description (struct target_ops *target) | |
2513 | { | |
2514 | struct target_ops *t; | |
2515 | ||
2516 | for (t = target; t != NULL; t = t->beneath) | |
2517 | if (t->to_read_description != NULL) | |
2518 | { | |
2519 | const struct target_desc *tdesc; | |
2520 | ||
2521 | tdesc = t->to_read_description (t); | |
2522 | if (tdesc) | |
2523 | return tdesc; | |
2524 | } | |
2525 | ||
2526 | return NULL; | |
2527 | } | |
2528 | ||
08388c79 DE |
2529 | /* The default implementation of to_search_memory. |
2530 | This implements a basic search of memory, reading target memory and | |
2531 | performing the search here (as opposed to performing the search in on the | |
2532 | target side with, for example, gdbserver). */ | |
2533 | ||
2534 | int | |
2535 | simple_search_memory (struct target_ops *ops, | |
2536 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2537 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2538 | CORE_ADDR *found_addrp) | |
2539 | { | |
2540 | /* NOTE: also defined in find.c testcase. */ | |
2541 | #define SEARCH_CHUNK_SIZE 16000 | |
2542 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
2543 | /* Buffer to hold memory contents for searching. */ | |
2544 | gdb_byte *search_buf; | |
2545 | unsigned search_buf_size; | |
2546 | struct cleanup *old_cleanups; | |
2547 | ||
2548 | search_buf_size = chunk_size + pattern_len - 1; | |
2549 | ||
2550 | /* No point in trying to allocate a buffer larger than the search space. */ | |
2551 | if (search_space_len < search_buf_size) | |
2552 | search_buf_size = search_space_len; | |
2553 | ||
2554 | search_buf = malloc (search_buf_size); | |
2555 | if (search_buf == NULL) | |
5e1471f5 | 2556 | error (_("Unable to allocate memory to perform the search.")); |
08388c79 DE |
2557 | old_cleanups = make_cleanup (free_current_contents, &search_buf); |
2558 | ||
2559 | /* Prime the search buffer. */ | |
2560 | ||
2561 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2562 | search_buf, start_addr, search_buf_size) != search_buf_size) | |
2563 | { | |
5e1471f5 | 2564 | warning (_("Unable to access target memory at %s, halting search."), |
08388c79 DE |
2565 | hex_string (start_addr)); |
2566 | do_cleanups (old_cleanups); | |
2567 | return -1; | |
2568 | } | |
2569 | ||
2570 | /* Perform the search. | |
2571 | ||
2572 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
2573 | When we've scanned N bytes we copy the trailing bytes to the start and | |
2574 | read in another N bytes. */ | |
2575 | ||
2576 | while (search_space_len >= pattern_len) | |
2577 | { | |
2578 | gdb_byte *found_ptr; | |
2579 | unsigned nr_search_bytes = min (search_space_len, search_buf_size); | |
2580 | ||
2581 | found_ptr = memmem (search_buf, nr_search_bytes, | |
2582 | pattern, pattern_len); | |
2583 | ||
2584 | if (found_ptr != NULL) | |
2585 | { | |
2586 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
5d502164 | 2587 | |
08388c79 DE |
2588 | *found_addrp = found_addr; |
2589 | do_cleanups (old_cleanups); | |
2590 | return 1; | |
2591 | } | |
2592 | ||
2593 | /* Not found in this chunk, skip to next chunk. */ | |
2594 | ||
2595 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
2596 | if (search_space_len >= chunk_size) | |
2597 | search_space_len -= chunk_size; | |
2598 | else | |
2599 | search_space_len = 0; | |
2600 | ||
2601 | if (search_space_len >= pattern_len) | |
2602 | { | |
2603 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 2604 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
2605 | int nr_to_read; |
2606 | ||
2607 | /* Copy the trailing part of the previous iteration to the front | |
2608 | of the buffer for the next iteration. */ | |
2609 | gdb_assert (keep_len == pattern_len - 1); | |
2610 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
2611 | ||
2612 | nr_to_read = min (search_space_len - keep_len, chunk_size); | |
2613 | ||
2614 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2615 | search_buf + keep_len, read_addr, | |
2616 | nr_to_read) != nr_to_read) | |
2617 | { | |
9b20d036 MS |
2618 | warning (_("Unable to access target " |
2619 | "memory at %s, halting search."), | |
08388c79 DE |
2620 | hex_string (read_addr)); |
2621 | do_cleanups (old_cleanups); | |
2622 | return -1; | |
2623 | } | |
2624 | ||
2625 | start_addr += chunk_size; | |
2626 | } | |
2627 | } | |
2628 | ||
2629 | /* Not found. */ | |
2630 | ||
2631 | do_cleanups (old_cleanups); | |
2632 | return 0; | |
2633 | } | |
2634 | ||
2635 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the | |
2636 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2637 | ||
2638 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2639 | requiring halting of the search (e.g. memory read error). | |
2640 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2641 | ||
2642 | int | |
2643 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2644 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2645 | CORE_ADDR *found_addrp) | |
2646 | { | |
2647 | struct target_ops *t; | |
2648 | int found; | |
2649 | ||
2650 | /* We don't use INHERIT to set current_target.to_search_memory, | |
2651 | so we have to scan the target stack and handle targetdebug | |
2652 | ourselves. */ | |
2653 | ||
2654 | if (targetdebug) | |
2655 | fprintf_unfiltered (gdb_stdlog, "target_search_memory (%s, ...)\n", | |
2656 | hex_string (start_addr)); | |
2657 | ||
2658 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2659 | if (t->to_search_memory != NULL) | |
2660 | break; | |
2661 | ||
2662 | if (t != NULL) | |
2663 | { | |
2664 | found = t->to_search_memory (t, start_addr, search_space_len, | |
2665 | pattern, pattern_len, found_addrp); | |
2666 | } | |
2667 | else | |
2668 | { | |
2669 | /* If a special version of to_search_memory isn't available, use the | |
2670 | simple version. */ | |
c35b1492 | 2671 | found = simple_search_memory (current_target.beneath, |
08388c79 DE |
2672 | start_addr, search_space_len, |
2673 | pattern, pattern_len, found_addrp); | |
2674 | } | |
2675 | ||
2676 | if (targetdebug) | |
2677 | fprintf_unfiltered (gdb_stdlog, " = %d\n", found); | |
2678 | ||
2679 | return found; | |
2680 | } | |
2681 | ||
8edfe269 DJ |
2682 | /* Look through the currently pushed targets. If none of them will |
2683 | be able to restart the currently running process, issue an error | |
2684 | message. */ | |
2685 | ||
2686 | void | |
2687 | target_require_runnable (void) | |
2688 | { | |
2689 | struct target_ops *t; | |
2690 | ||
2691 | for (t = target_stack; t != NULL; t = t->beneath) | |
2692 | { | |
2693 | /* If this target knows how to create a new program, then | |
2694 | assume we will still be able to after killing the current | |
2695 | one. Either killing and mourning will not pop T, or else | |
2696 | find_default_run_target will find it again. */ | |
2697 | if (t->to_create_inferior != NULL) | |
2698 | return; | |
2699 | ||
2700 | /* Do not worry about thread_stratum targets that can not | |
2701 | create inferiors. Assume they will be pushed again if | |
2702 | necessary, and continue to the process_stratum. */ | |
85e747d2 UW |
2703 | if (t->to_stratum == thread_stratum |
2704 | || t->to_stratum == arch_stratum) | |
8edfe269 DJ |
2705 | continue; |
2706 | ||
3e43a32a MS |
2707 | error (_("The \"%s\" target does not support \"run\". " |
2708 | "Try \"help target\" or \"continue\"."), | |
8edfe269 DJ |
2709 | t->to_shortname); |
2710 | } | |
2711 | ||
2712 | /* This function is only called if the target is running. In that | |
2713 | case there should have been a process_stratum target and it | |
c378eb4e | 2714 | should either know how to create inferiors, or not... */ |
9b20d036 | 2715 | internal_error (__FILE__, __LINE__, _("No targets found")); |
8edfe269 DJ |
2716 | } |
2717 | ||
c906108c SS |
2718 | /* Look through the list of possible targets for a target that can |
2719 | execute a run or attach command without any other data. This is | |
2720 | used to locate the default process stratum. | |
2721 | ||
5f667f2d PA |
2722 | If DO_MESG is not NULL, the result is always valid (error() is |
2723 | called for errors); else, return NULL on error. */ | |
c906108c SS |
2724 | |
2725 | static struct target_ops * | |
fba45db2 | 2726 | find_default_run_target (char *do_mesg) |
c906108c SS |
2727 | { |
2728 | struct target_ops **t; | |
2729 | struct target_ops *runable = NULL; | |
2730 | int count; | |
2731 | ||
2732 | count = 0; | |
2733 | ||
2734 | for (t = target_structs; t < target_structs + target_struct_size; | |
2735 | ++t) | |
2736 | { | |
c5aa993b | 2737 | if ((*t)->to_can_run && target_can_run (*t)) |
c906108c SS |
2738 | { |
2739 | runable = *t; | |
2740 | ++count; | |
2741 | } | |
2742 | } | |
2743 | ||
2744 | if (count != 1) | |
5f667f2d PA |
2745 | { |
2746 | if (do_mesg) | |
2747 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
2748 | else | |
2749 | return NULL; | |
2750 | } | |
c906108c SS |
2751 | |
2752 | return runable; | |
2753 | } | |
2754 | ||
2755 | void | |
136d6dae | 2756 | find_default_attach (struct target_ops *ops, char *args, int from_tty) |
c906108c SS |
2757 | { |
2758 | struct target_ops *t; | |
2759 | ||
c5aa993b | 2760 | t = find_default_run_target ("attach"); |
136d6dae | 2761 | (t->to_attach) (t, args, from_tty); |
c906108c SS |
2762 | return; |
2763 | } | |
2764 | ||
c906108c | 2765 | void |
136d6dae VP |
2766 | find_default_create_inferior (struct target_ops *ops, |
2767 | char *exec_file, char *allargs, char **env, | |
c27cda74 | 2768 | int from_tty) |
c906108c SS |
2769 | { |
2770 | struct target_ops *t; | |
2771 | ||
c5aa993b | 2772 | t = find_default_run_target ("run"); |
136d6dae | 2773 | (t->to_create_inferior) (t, exec_file, allargs, env, from_tty); |
c906108c SS |
2774 | return; |
2775 | } | |
2776 | ||
2c0b251b | 2777 | static int |
b84876c2 PA |
2778 | find_default_can_async_p (void) |
2779 | { | |
2780 | struct target_ops *t; | |
2781 | ||
5f667f2d PA |
2782 | /* This may be called before the target is pushed on the stack; |
2783 | look for the default process stratum. If there's none, gdb isn't | |
2784 | configured with a native debugger, and target remote isn't | |
2785 | connected yet. */ | |
2786 | t = find_default_run_target (NULL); | |
2787 | if (t && t->to_can_async_p) | |
b84876c2 PA |
2788 | return (t->to_can_async_p) (); |
2789 | return 0; | |
2790 | } | |
2791 | ||
2c0b251b | 2792 | static int |
b84876c2 PA |
2793 | find_default_is_async_p (void) |
2794 | { | |
2795 | struct target_ops *t; | |
2796 | ||
5f667f2d PA |
2797 | /* This may be called before the target is pushed on the stack; |
2798 | look for the default process stratum. If there's none, gdb isn't | |
2799 | configured with a native debugger, and target remote isn't | |
2800 | connected yet. */ | |
2801 | t = find_default_run_target (NULL); | |
2802 | if (t && t->to_is_async_p) | |
b84876c2 PA |
2803 | return (t->to_is_async_p) (); |
2804 | return 0; | |
2805 | } | |
2806 | ||
2c0b251b | 2807 | static int |
9908b566 VP |
2808 | find_default_supports_non_stop (void) |
2809 | { | |
2810 | struct target_ops *t; | |
2811 | ||
2812 | t = find_default_run_target (NULL); | |
2813 | if (t && t->to_supports_non_stop) | |
2814 | return (t->to_supports_non_stop) (); | |
2815 | return 0; | |
2816 | } | |
2817 | ||
2818 | int | |
2c0b251b | 2819 | target_supports_non_stop (void) |
9908b566 VP |
2820 | { |
2821 | struct target_ops *t; | |
5d502164 | 2822 | |
9908b566 VP |
2823 | for (t = ¤t_target; t != NULL; t = t->beneath) |
2824 | if (t->to_supports_non_stop) | |
2825 | return t->to_supports_non_stop (); | |
2826 | ||
2827 | return 0; | |
2828 | } | |
2829 | ||
2830 | ||
07e059b5 VP |
2831 | char * |
2832 | target_get_osdata (const char *type) | |
2833 | { | |
07e059b5 VP |
2834 | struct target_ops *t; |
2835 | ||
739ef7fb PA |
2836 | /* If we're already connected to something that can get us OS |
2837 | related data, use it. Otherwise, try using the native | |
2838 | target. */ | |
2839 | if (current_target.to_stratum >= process_stratum) | |
6d097e65 | 2840 | t = current_target.beneath; |
739ef7fb PA |
2841 | else |
2842 | t = find_default_run_target ("get OS data"); | |
07e059b5 VP |
2843 | |
2844 | if (!t) | |
2845 | return NULL; | |
2846 | ||
6d097e65 | 2847 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
2848 | } |
2849 | ||
6c95b8df PA |
2850 | /* Determine the current address space of thread PTID. */ |
2851 | ||
2852 | struct address_space * | |
2853 | target_thread_address_space (ptid_t ptid) | |
2854 | { | |
c0694254 | 2855 | struct address_space *aspace; |
6c95b8df | 2856 | struct inferior *inf; |
c0694254 PA |
2857 | struct target_ops *t; |
2858 | ||
2859 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2860 | { | |
2861 | if (t->to_thread_address_space != NULL) | |
2862 | { | |
2863 | aspace = t->to_thread_address_space (t, ptid); | |
2864 | gdb_assert (aspace); | |
6c95b8df | 2865 | |
c0694254 PA |
2866 | if (targetdebug) |
2867 | fprintf_unfiltered (gdb_stdlog, | |
2868 | "target_thread_address_space (%s) = %d\n", | |
2869 | target_pid_to_str (ptid), | |
2870 | address_space_num (aspace)); | |
2871 | return aspace; | |
2872 | } | |
2873 | } | |
6c95b8df PA |
2874 | |
2875 | /* Fall-back to the "main" address space of the inferior. */ | |
2876 | inf = find_inferior_pid (ptid_get_pid (ptid)); | |
2877 | ||
2878 | if (inf == NULL || inf->aspace == NULL) | |
3e43a32a | 2879 | internal_error (__FILE__, __LINE__, |
9b20d036 MS |
2880 | _("Can't determine the current " |
2881 | "address space of thread %s\n"), | |
6c95b8df PA |
2882 | target_pid_to_str (ptid)); |
2883 | ||
2884 | return inf->aspace; | |
2885 | } | |
2886 | ||
e0d24f8d WZ |
2887 | static int |
2888 | default_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
2889 | { | |
ffe5a37e | 2890 | return (len <= gdbarch_ptr_bit (target_gdbarch) / TARGET_CHAR_BIT); |
ccaa32c7 GS |
2891 | } |
2892 | ||
5009afc5 AS |
2893 | static int |
2894 | default_watchpoint_addr_within_range (struct target_ops *target, | |
2895 | CORE_ADDR addr, | |
2896 | CORE_ADDR start, int length) | |
2897 | { | |
2898 | return addr >= start && addr < start + length; | |
2899 | } | |
2900 | ||
c2250ad1 UW |
2901 | static struct gdbarch * |
2902 | default_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
2903 | { | |
2904 | return target_gdbarch; | |
2905 | } | |
2906 | ||
c906108c | 2907 | static int |
fba45db2 | 2908 | return_zero (void) |
c906108c SS |
2909 | { |
2910 | return 0; | |
2911 | } | |
2912 | ||
2913 | static int | |
fba45db2 | 2914 | return_one (void) |
c906108c SS |
2915 | { |
2916 | return 1; | |
2917 | } | |
2918 | ||
ccaa32c7 GS |
2919 | static int |
2920 | return_minus_one (void) | |
2921 | { | |
2922 | return -1; | |
2923 | } | |
2924 | ||
7a292a7a SS |
2925 | /* Find a single runnable target in the stack and return it. If for |
2926 | some reason there is more than one, return NULL. */ | |
2927 | ||
2928 | struct target_ops * | |
fba45db2 | 2929 | find_run_target (void) |
7a292a7a SS |
2930 | { |
2931 | struct target_ops **t; | |
2932 | struct target_ops *runable = NULL; | |
2933 | int count; | |
c5aa993b | 2934 | |
7a292a7a | 2935 | count = 0; |
c5aa993b | 2936 | |
7a292a7a SS |
2937 | for (t = target_structs; t < target_structs + target_struct_size; ++t) |
2938 | { | |
c5aa993b | 2939 | if ((*t)->to_can_run && target_can_run (*t)) |
7a292a7a SS |
2940 | { |
2941 | runable = *t; | |
2942 | ++count; | |
2943 | } | |
2944 | } | |
c5aa993b | 2945 | |
7a292a7a SS |
2946 | return (count == 1 ? runable : NULL); |
2947 | } | |
2948 | ||
ed9a39eb JM |
2949 | /* |
2950 | * Find the next target down the stack from the specified target. | |
2951 | */ | |
2952 | ||
2953 | struct target_ops * | |
fba45db2 | 2954 | find_target_beneath (struct target_ops *t) |
ed9a39eb | 2955 | { |
258b763a | 2956 | return t->beneath; |
ed9a39eb JM |
2957 | } |
2958 | ||
c906108c SS |
2959 | \f |
2960 | /* The inferior process has died. Long live the inferior! */ | |
2961 | ||
2962 | void | |
fba45db2 | 2963 | generic_mourn_inferior (void) |
c906108c | 2964 | { |
7f9f62ba | 2965 | ptid_t ptid; |
c906108c | 2966 | |
7f9f62ba | 2967 | ptid = inferior_ptid; |
39f77062 | 2968 | inferior_ptid = null_ptid; |
7f9f62ba PA |
2969 | |
2970 | if (!ptid_equal (ptid, null_ptid)) | |
2971 | { | |
2972 | int pid = ptid_get_pid (ptid); | |
6c95b8df | 2973 | exit_inferior (pid); |
7f9f62ba PA |
2974 | } |
2975 | ||
c906108c SS |
2976 | breakpoint_init_inferior (inf_exited); |
2977 | registers_changed (); | |
2978 | ||
c906108c SS |
2979 | reopen_exec_file (); |
2980 | reinit_frame_cache (); | |
2981 | ||
9a4105ab AC |
2982 | if (deprecated_detach_hook) |
2983 | deprecated_detach_hook (); | |
c906108c SS |
2984 | } |
2985 | \f | |
8807d78b | 2986 | /* Helper function for child_wait and the derivatives of child_wait. |
c906108c SS |
2987 | HOSTSTATUS is the waitstatus from wait() or the equivalent; store our |
2988 | translation of that in OURSTATUS. */ | |
2989 | void | |
fba45db2 | 2990 | store_waitstatus (struct target_waitstatus *ourstatus, int hoststatus) |
c906108c | 2991 | { |
c906108c SS |
2992 | if (WIFEXITED (hoststatus)) |
2993 | { | |
2994 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
2995 | ourstatus->value.integer = WEXITSTATUS (hoststatus); | |
2996 | } | |
2997 | else if (!WIFSTOPPED (hoststatus)) | |
2998 | { | |
2999 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
3000 | ourstatus->value.sig = target_signal_from_host (WTERMSIG (hoststatus)); | |
3001 | } | |
3002 | else | |
3003 | { | |
3004 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
3005 | ourstatus->value.sig = target_signal_from_host (WSTOPSIG (hoststatus)); | |
3006 | } | |
3007 | } | |
3008 | \f | |
fd0a2a6f MK |
3009 | /* Convert a normal process ID to a string. Returns the string in a |
3010 | static buffer. */ | |
c906108c SS |
3011 | |
3012 | char * | |
39f77062 | 3013 | normal_pid_to_str (ptid_t ptid) |
c906108c | 3014 | { |
fd0a2a6f | 3015 | static char buf[32]; |
c906108c | 3016 | |
5fff8fc0 | 3017 | xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid)); |
c906108c SS |
3018 | return buf; |
3019 | } | |
3020 | ||
2c0b251b | 3021 | static char * |
117de6a9 PA |
3022 | dummy_pid_to_str (struct target_ops *ops, ptid_t ptid) |
3023 | { | |
3024 | return normal_pid_to_str (ptid); | |
3025 | } | |
3026 | ||
9b4eba8e HZ |
3027 | /* Error-catcher for target_find_memory_regions. */ |
3028 | static int | |
b8edc417 | 3029 | dummy_find_memory_regions (find_memory_region_ftype ignore1, void *ignore2) |
be4d1333 | 3030 | { |
9b4eba8e | 3031 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3032 | return 0; |
3033 | } | |
3034 | ||
9b4eba8e HZ |
3035 | /* Error-catcher for target_make_corefile_notes. */ |
3036 | static char * | |
3037 | dummy_make_corefile_notes (bfd *ignore1, int *ignore2) | |
be4d1333 | 3038 | { |
9b4eba8e | 3039 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3040 | return NULL; |
3041 | } | |
3042 | ||
6b04bdb7 MS |
3043 | /* Error-catcher for target_get_bookmark. */ |
3044 | static gdb_byte * | |
3045 | dummy_get_bookmark (char *ignore1, int ignore2) | |
3046 | { | |
3047 | tcomplain (); | |
3048 | return NULL; | |
3049 | } | |
3050 | ||
3051 | /* Error-catcher for target_goto_bookmark. */ | |
3052 | static void | |
3053 | dummy_goto_bookmark (gdb_byte *ignore, int from_tty) | |
3054 | { | |
3055 | tcomplain (); | |
3056 | } | |
3057 | ||
c906108c SS |
3058 | /* Set up the handful of non-empty slots needed by the dummy target |
3059 | vector. */ | |
3060 | ||
3061 | static void | |
fba45db2 | 3062 | init_dummy_target (void) |
c906108c SS |
3063 | { |
3064 | dummy_target.to_shortname = "None"; | |
3065 | dummy_target.to_longname = "None"; | |
3066 | dummy_target.to_doc = ""; | |
3067 | dummy_target.to_attach = find_default_attach; | |
136d6dae VP |
3068 | dummy_target.to_detach = |
3069 | (void (*)(struct target_ops *, char *, int))target_ignore; | |
c906108c | 3070 | dummy_target.to_create_inferior = find_default_create_inferior; |
b84876c2 PA |
3071 | dummy_target.to_can_async_p = find_default_can_async_p; |
3072 | dummy_target.to_is_async_p = find_default_is_async_p; | |
9908b566 | 3073 | dummy_target.to_supports_non_stop = find_default_supports_non_stop; |
117de6a9 | 3074 | dummy_target.to_pid_to_str = dummy_pid_to_str; |
c906108c | 3075 | dummy_target.to_stratum = dummy_stratum; |
be4d1333 MS |
3076 | dummy_target.to_find_memory_regions = dummy_find_memory_regions; |
3077 | dummy_target.to_make_corefile_notes = dummy_make_corefile_notes; | |
6b04bdb7 MS |
3078 | dummy_target.to_get_bookmark = dummy_get_bookmark; |
3079 | dummy_target.to_goto_bookmark = dummy_goto_bookmark; | |
0b603eba | 3080 | dummy_target.to_xfer_partial = default_xfer_partial; |
c35b1492 PA |
3081 | dummy_target.to_has_all_memory = (int (*) (struct target_ops *)) return_zero; |
3082 | dummy_target.to_has_memory = (int (*) (struct target_ops *)) return_zero; | |
3083 | dummy_target.to_has_stack = (int (*) (struct target_ops *)) return_zero; | |
3084 | dummy_target.to_has_registers = (int (*) (struct target_ops *)) return_zero; | |
3085 | dummy_target.to_has_execution = (int (*) (struct target_ops *)) return_zero; | |
7155de5a HZ |
3086 | dummy_target.to_stopped_by_watchpoint = return_zero; |
3087 | dummy_target.to_stopped_data_address = | |
3088 | (int (*) (struct target_ops *, CORE_ADDR *)) return_zero; | |
c906108c SS |
3089 | dummy_target.to_magic = OPS_MAGIC; |
3090 | } | |
c906108c | 3091 | \f |
c906108c | 3092 | static void |
fba45db2 | 3093 | debug_to_open (char *args, int from_tty) |
c906108c SS |
3094 | { |
3095 | debug_target.to_open (args, from_tty); | |
3096 | ||
96baa820 | 3097 | fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty); |
c906108c SS |
3098 | } |
3099 | ||
f1c07ab0 AC |
3100 | void |
3101 | target_close (struct target_ops *targ, int quitting) | |
3102 | { | |
3103 | if (targ->to_xclose != NULL) | |
3104 | targ->to_xclose (targ, quitting); | |
3105 | else if (targ->to_close != NULL) | |
3106 | targ->to_close (quitting); | |
947b8855 PA |
3107 | |
3108 | if (targetdebug) | |
3109 | fprintf_unfiltered (gdb_stdlog, "target_close (%d)\n", quitting); | |
f1c07ab0 AC |
3110 | } |
3111 | ||
136d6dae VP |
3112 | void |
3113 | target_attach (char *args, int from_tty) | |
3114 | { | |
3115 | struct target_ops *t; | |
5d502164 | 3116 | |
136d6dae VP |
3117 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3118 | { | |
3119 | if (t->to_attach != NULL) | |
3120 | { | |
3121 | t->to_attach (t, args, from_tty); | |
947b8855 PA |
3122 | if (targetdebug) |
3123 | fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n", | |
3124 | args, from_tty); | |
136d6dae VP |
3125 | return; |
3126 | } | |
3127 | } | |
3128 | ||
3129 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 3130 | _("could not find a target to attach")); |
136d6dae VP |
3131 | } |
3132 | ||
28439f5e PA |
3133 | int |
3134 | target_thread_alive (ptid_t ptid) | |
c906108c | 3135 | { |
28439f5e | 3136 | struct target_ops *t; |
5d502164 | 3137 | |
28439f5e PA |
3138 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3139 | { | |
3140 | if (t->to_thread_alive != NULL) | |
3141 | { | |
3142 | int retval; | |
c906108c | 3143 | |
28439f5e PA |
3144 | retval = t->to_thread_alive (t, ptid); |
3145 | if (targetdebug) | |
3146 | fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n", | |
3147 | PIDGET (ptid), retval); | |
3148 | ||
3149 | return retval; | |
3150 | } | |
3151 | } | |
3152 | ||
3153 | return 0; | |
3154 | } | |
3155 | ||
3156 | void | |
3157 | target_find_new_threads (void) | |
3158 | { | |
3159 | struct target_ops *t; | |
5d502164 | 3160 | |
28439f5e PA |
3161 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3162 | { | |
3163 | if (t->to_find_new_threads != NULL) | |
3164 | { | |
3165 | t->to_find_new_threads (t); | |
3166 | if (targetdebug) | |
3167 | fprintf_unfiltered (gdb_stdlog, "target_find_new_threads ()\n"); | |
3168 | ||
3169 | return; | |
3170 | } | |
3171 | } | |
c906108c SS |
3172 | } |
3173 | ||
d914c394 SS |
3174 | void |
3175 | target_stop (ptid_t ptid) | |
3176 | { | |
3177 | if (!may_stop) | |
3178 | { | |
3179 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3180 | return; | |
3181 | } | |
3182 | ||
3183 | (*current_target.to_stop) (ptid); | |
3184 | } | |
3185 | ||
c906108c | 3186 | static void |
28439f5e | 3187 | debug_to_post_attach (int pid) |
c906108c | 3188 | { |
28439f5e | 3189 | debug_target.to_post_attach (pid); |
c906108c | 3190 | |
28439f5e | 3191 | fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid); |
c906108c SS |
3192 | } |
3193 | ||
f00150c9 DE |
3194 | /* Return a pretty printed form of target_waitstatus. |
3195 | Space for the result is malloc'd, caller must free. */ | |
c906108c | 3196 | |
f00150c9 DE |
3197 | char * |
3198 | target_waitstatus_to_string (const struct target_waitstatus *ws) | |
3199 | { | |
3200 | const char *kind_str = "status->kind = "; | |
c906108c | 3201 | |
f00150c9 | 3202 | switch (ws->kind) |
c906108c SS |
3203 | { |
3204 | case TARGET_WAITKIND_EXITED: | |
f00150c9 DE |
3205 | return xstrprintf ("%sexited, status = %d", |
3206 | kind_str, ws->value.integer); | |
c906108c | 3207 | case TARGET_WAITKIND_STOPPED: |
f00150c9 DE |
3208 | return xstrprintf ("%sstopped, signal = %s", |
3209 | kind_str, target_signal_to_name (ws->value.sig)); | |
c906108c | 3210 | case TARGET_WAITKIND_SIGNALLED: |
f00150c9 DE |
3211 | return xstrprintf ("%ssignalled, signal = %s", |
3212 | kind_str, target_signal_to_name (ws->value.sig)); | |
c906108c | 3213 | case TARGET_WAITKIND_LOADED: |
f00150c9 | 3214 | return xstrprintf ("%sloaded", kind_str); |
c906108c | 3215 | case TARGET_WAITKIND_FORKED: |
f00150c9 | 3216 | return xstrprintf ("%sforked", kind_str); |
c906108c | 3217 | case TARGET_WAITKIND_VFORKED: |
f00150c9 | 3218 | return xstrprintf ("%svforked", kind_str); |
c906108c | 3219 | case TARGET_WAITKIND_EXECD: |
f00150c9 DE |
3220 | return xstrprintf ("%sexecd", kind_str); |
3221 | case TARGET_WAITKIND_SYSCALL_ENTRY: | |
a96d9b2e | 3222 | return xstrprintf ("%sentered syscall", kind_str); |
f00150c9 | 3223 | case TARGET_WAITKIND_SYSCALL_RETURN: |
a96d9b2e | 3224 | return xstrprintf ("%sexited syscall", kind_str); |
c906108c | 3225 | case TARGET_WAITKIND_SPURIOUS: |
f00150c9 DE |
3226 | return xstrprintf ("%sspurious", kind_str); |
3227 | case TARGET_WAITKIND_IGNORE: | |
3228 | return xstrprintf ("%signore", kind_str); | |
3229 | case TARGET_WAITKIND_NO_HISTORY: | |
3230 | return xstrprintf ("%sno-history", kind_str); | |
c906108c | 3231 | default: |
f00150c9 | 3232 | return xstrprintf ("%sunknown???", kind_str); |
c906108c | 3233 | } |
f00150c9 DE |
3234 | } |
3235 | ||
bf0c5130 | 3236 | static void |
56be3814 UW |
3237 | debug_print_register (const char * func, |
3238 | struct regcache *regcache, int regno) | |
bf0c5130 | 3239 | { |
f8d29908 | 3240 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
5d502164 | 3241 | |
bf0c5130 | 3242 | fprintf_unfiltered (gdb_stdlog, "%s ", func); |
f8d29908 | 3243 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) |
f8d29908 UW |
3244 | && gdbarch_register_name (gdbarch, regno) != NULL |
3245 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') | |
3246 | fprintf_unfiltered (gdb_stdlog, "(%s)", | |
3247 | gdbarch_register_name (gdbarch, regno)); | |
bf0c5130 AC |
3248 | else |
3249 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
0ff58721 | 3250 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) |
bf0c5130 | 3251 | { |
e17a4113 | 3252 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
f8d29908 | 3253 | int i, size = register_size (gdbarch, regno); |
d9d9c31f | 3254 | unsigned char buf[MAX_REGISTER_SIZE]; |
5d502164 | 3255 | |
0ff58721 | 3256 | regcache_raw_collect (regcache, regno, buf); |
bf0c5130 | 3257 | fprintf_unfiltered (gdb_stdlog, " = "); |
81c4a259 | 3258 | for (i = 0; i < size; i++) |
bf0c5130 AC |
3259 | { |
3260 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
3261 | } | |
81c4a259 | 3262 | if (size <= sizeof (LONGEST)) |
bf0c5130 | 3263 | { |
e17a4113 | 3264 | ULONGEST val = extract_unsigned_integer (buf, size, byte_order); |
5d502164 | 3265 | |
0b1553bc UW |
3266 | fprintf_unfiltered (gdb_stdlog, " %s %s", |
3267 | core_addr_to_string_nz (val), plongest (val)); | |
bf0c5130 AC |
3268 | } |
3269 | } | |
3270 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
3271 | } | |
3272 | ||
28439f5e PA |
3273 | void |
3274 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 3275 | { |
28439f5e | 3276 | struct target_ops *t; |
5d502164 | 3277 | |
28439f5e PA |
3278 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3279 | { | |
3280 | if (t->to_fetch_registers != NULL) | |
3281 | { | |
3282 | t->to_fetch_registers (t, regcache, regno); | |
3283 | if (targetdebug) | |
3284 | debug_print_register ("target_fetch_registers", regcache, regno); | |
3285 | return; | |
3286 | } | |
3287 | } | |
c906108c SS |
3288 | } |
3289 | ||
28439f5e PA |
3290 | void |
3291 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 3292 | { |
28439f5e | 3293 | struct target_ops *t; |
5d502164 | 3294 | |
d914c394 SS |
3295 | if (!may_write_registers) |
3296 | error (_("Writing to registers is not allowed (regno %d)"), regno); | |
3297 | ||
28439f5e PA |
3298 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
3299 | { | |
3300 | if (t->to_store_registers != NULL) | |
3301 | { | |
3302 | t->to_store_registers (t, regcache, regno); | |
3303 | if (targetdebug) | |
3304 | { | |
3305 | debug_print_register ("target_store_registers", regcache, regno); | |
3306 | } | |
3307 | return; | |
3308 | } | |
3309 | } | |
3310 | ||
3311 | noprocess (); | |
c906108c SS |
3312 | } |
3313 | ||
dc146f7c VP |
3314 | int |
3315 | target_core_of_thread (ptid_t ptid) | |
3316 | { | |
3317 | struct target_ops *t; | |
3318 | ||
3319 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3320 | { | |
3321 | if (t->to_core_of_thread != NULL) | |
3322 | { | |
3323 | int retval = t->to_core_of_thread (t, ptid); | |
5d502164 | 3324 | |
dc146f7c | 3325 | if (targetdebug) |
3e43a32a MS |
3326 | fprintf_unfiltered (gdb_stdlog, |
3327 | "target_core_of_thread (%d) = %d\n", | |
dc146f7c VP |
3328 | PIDGET (ptid), retval); |
3329 | return retval; | |
3330 | } | |
3331 | } | |
3332 | ||
3333 | return -1; | |
3334 | } | |
3335 | ||
4a5e7a5b PA |
3336 | int |
3337 | target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3338 | { | |
3339 | struct target_ops *t; | |
3340 | ||
3341 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
3342 | { | |
3343 | if (t->to_verify_memory != NULL) | |
3344 | { | |
3345 | int retval = t->to_verify_memory (t, data, memaddr, size); | |
5d502164 | 3346 | |
4a5e7a5b | 3347 | if (targetdebug) |
3e43a32a MS |
3348 | fprintf_unfiltered (gdb_stdlog, |
3349 | "target_verify_memory (%s, %s) = %d\n", | |
4a5e7a5b PA |
3350 | paddress (target_gdbarch, memaddr), |
3351 | pulongest (size), | |
3352 | retval); | |
3353 | return retval; | |
3354 | } | |
3355 | } | |
3356 | ||
3357 | tcomplain (); | |
3358 | } | |
3359 | ||
c906108c | 3360 | static void |
316f2060 | 3361 | debug_to_prepare_to_store (struct regcache *regcache) |
c906108c | 3362 | { |
316f2060 | 3363 | debug_target.to_prepare_to_store (regcache); |
c906108c | 3364 | |
96baa820 | 3365 | fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n"); |
c906108c SS |
3366 | } |
3367 | ||
3368 | static int | |
961cb7b5 | 3369 | deprecated_debug_xfer_memory (CORE_ADDR memaddr, bfd_byte *myaddr, int len, |
c8e73a31 AC |
3370 | int write, struct mem_attrib *attrib, |
3371 | struct target_ops *target) | |
c906108c SS |
3372 | { |
3373 | int retval; | |
3374 | ||
c8e73a31 AC |
3375 | retval = debug_target.deprecated_xfer_memory (memaddr, myaddr, len, write, |
3376 | attrib, target); | |
c906108c | 3377 | |
96baa820 | 3378 | fprintf_unfiltered (gdb_stdlog, |
53b71562 | 3379 | "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d", |
5af949e3 UW |
3380 | paddress (target_gdbarch, memaddr), len, |
3381 | write ? "write" : "read", retval); | |
c906108c | 3382 | |
c906108c SS |
3383 | if (retval > 0) |
3384 | { | |
3385 | int i; | |
3386 | ||
96baa820 | 3387 | fputs_unfiltered (", bytes =", gdb_stdlog); |
c906108c SS |
3388 | for (i = 0; i < retval; i++) |
3389 | { | |
53b71562 | 3390 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
333dabeb DJ |
3391 | { |
3392 | if (targetdebug < 2 && i > 0) | |
3393 | { | |
3394 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
3395 | break; | |
3396 | } | |
3397 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
3398 | } | |
2bc416ba | 3399 | |
96baa820 | 3400 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
c906108c SS |
3401 | } |
3402 | } | |
3403 | ||
96baa820 | 3404 | fputc_unfiltered ('\n', gdb_stdlog); |
c906108c SS |
3405 | |
3406 | return retval; | |
3407 | } | |
3408 | ||
3409 | static void | |
fba45db2 | 3410 | debug_to_files_info (struct target_ops *target) |
c906108c SS |
3411 | { |
3412 | debug_target.to_files_info (target); | |
3413 | ||
96baa820 | 3414 | fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n"); |
c906108c SS |
3415 | } |
3416 | ||
3417 | static int | |
a6d9a66e UW |
3418 | debug_to_insert_breakpoint (struct gdbarch *gdbarch, |
3419 | struct bp_target_info *bp_tgt) | |
c906108c SS |
3420 | { |
3421 | int retval; | |
3422 | ||
a6d9a66e | 3423 | retval = debug_target.to_insert_breakpoint (gdbarch, bp_tgt); |
c906108c | 3424 | |
96baa820 | 3425 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
3426 | "target_insert_breakpoint (%s, xxx) = %ld\n", |
3427 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 3428 | (unsigned long) retval); |
c906108c SS |
3429 | return retval; |
3430 | } | |
3431 | ||
3432 | static int | |
a6d9a66e UW |
3433 | debug_to_remove_breakpoint (struct gdbarch *gdbarch, |
3434 | struct bp_target_info *bp_tgt) | |
c906108c SS |
3435 | { |
3436 | int retval; | |
3437 | ||
a6d9a66e | 3438 | retval = debug_target.to_remove_breakpoint (gdbarch, bp_tgt); |
c906108c | 3439 | |
96baa820 | 3440 | fprintf_unfiltered (gdb_stdlog, |
bd91e7ae OS |
3441 | "target_remove_breakpoint (%s, xxx) = %ld\n", |
3442 | core_addr_to_string (bp_tgt->placed_address), | |
104c1213 | 3443 | (unsigned long) retval); |
c906108c SS |
3444 | return retval; |
3445 | } | |
3446 | ||
ccaa32c7 GS |
3447 | static int |
3448 | debug_to_can_use_hw_breakpoint (int type, int cnt, int from_tty) | |
3449 | { | |
3450 | int retval; | |
3451 | ||
3452 | retval = debug_target.to_can_use_hw_breakpoint (type, cnt, from_tty); | |
3453 | ||
3454 | fprintf_unfiltered (gdb_stdlog, | |
3455 | "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n", | |
3456 | (unsigned long) type, | |
3457 | (unsigned long) cnt, | |
3458 | (unsigned long) from_tty, | |
3459 | (unsigned long) retval); | |
3460 | return retval; | |
3461 | } | |
3462 | ||
e0d24f8d WZ |
3463 | static int |
3464 | debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
3465 | { | |
3466 | CORE_ADDR retval; | |
3467 | ||
3468 | retval = debug_target.to_region_ok_for_hw_watchpoint (addr, len); | |
3469 | ||
3470 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3471 | "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n", |
3472 | core_addr_to_string (addr), (unsigned long) len, | |
3473 | core_addr_to_string (retval)); | |
e0d24f8d WZ |
3474 | return retval; |
3475 | } | |
3476 | ||
0cf6dd15 TJB |
3477 | static int |
3478 | debug_to_can_accel_watchpoint_condition (CORE_ADDR addr, int len, int rw, | |
3479 | struct expression *cond) | |
3480 | { | |
3481 | int retval; | |
3482 | ||
3e43a32a MS |
3483 | retval = debug_target.to_can_accel_watchpoint_condition (addr, len, |
3484 | rw, cond); | |
0cf6dd15 TJB |
3485 | |
3486 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
3487 | "target_can_accel_watchpoint_condition " |
3488 | "(%s, %d, %d, %s) = %ld\n", | |
bd91e7ae OS |
3489 | core_addr_to_string (addr), len, rw, |
3490 | host_address_to_string (cond), (unsigned long) retval); | |
0cf6dd15 TJB |
3491 | return retval; |
3492 | } | |
3493 | ||
ccaa32c7 GS |
3494 | static int |
3495 | debug_to_stopped_by_watchpoint (void) | |
3496 | { | |
3497 | int retval; | |
3498 | ||
3499 | retval = debug_target.to_stopped_by_watchpoint (); | |
3500 | ||
3501 | fprintf_unfiltered (gdb_stdlog, | |
d92524f1 | 3502 | "target_stopped_by_watchpoint () = %ld\n", |
ccaa32c7 GS |
3503 | (unsigned long) retval); |
3504 | return retval; | |
3505 | } | |
3506 | ||
4aa7a7f5 JJ |
3507 | static int |
3508 | debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr) | |
ccaa32c7 | 3509 | { |
4aa7a7f5 | 3510 | int retval; |
ccaa32c7 | 3511 | |
4aa7a7f5 | 3512 | retval = debug_target.to_stopped_data_address (target, addr); |
ccaa32c7 GS |
3513 | |
3514 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3515 | "target_stopped_data_address ([%s]) = %ld\n", |
3516 | core_addr_to_string (*addr), | |
4aa7a7f5 | 3517 | (unsigned long)retval); |
ccaa32c7 GS |
3518 | return retval; |
3519 | } | |
3520 | ||
5009afc5 AS |
3521 | static int |
3522 | debug_to_watchpoint_addr_within_range (struct target_ops *target, | |
3523 | CORE_ADDR addr, | |
3524 | CORE_ADDR start, int length) | |
3525 | { | |
3526 | int retval; | |
3527 | ||
3528 | retval = debug_target.to_watchpoint_addr_within_range (target, addr, | |
3529 | start, length); | |
3530 | ||
3531 | fprintf_filtered (gdb_stdlog, | |
bd91e7ae OS |
3532 | "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n", |
3533 | core_addr_to_string (addr), core_addr_to_string (start), | |
3534 | length, retval); | |
5009afc5 AS |
3535 | return retval; |
3536 | } | |
3537 | ||
ccaa32c7 | 3538 | static int |
a6d9a66e UW |
3539 | debug_to_insert_hw_breakpoint (struct gdbarch *gdbarch, |
3540 | struct bp_target_info *bp_tgt) | |
ccaa32c7 GS |
3541 | { |
3542 | int retval; | |
3543 | ||
a6d9a66e | 3544 | retval = debug_target.to_insert_hw_breakpoint (gdbarch, bp_tgt); |
ccaa32c7 GS |
3545 | |
3546 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3547 | "target_insert_hw_breakpoint (%s, xxx) = %ld\n", |
3548 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
3549 | (unsigned long) retval); |
3550 | return retval; | |
3551 | } | |
3552 | ||
3553 | static int | |
a6d9a66e UW |
3554 | debug_to_remove_hw_breakpoint (struct gdbarch *gdbarch, |
3555 | struct bp_target_info *bp_tgt) | |
ccaa32c7 GS |
3556 | { |
3557 | int retval; | |
3558 | ||
a6d9a66e | 3559 | retval = debug_target.to_remove_hw_breakpoint (gdbarch, bp_tgt); |
ccaa32c7 GS |
3560 | |
3561 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3562 | "target_remove_hw_breakpoint (%s, xxx) = %ld\n", |
3563 | core_addr_to_string (bp_tgt->placed_address), | |
ccaa32c7 GS |
3564 | (unsigned long) retval); |
3565 | return retval; | |
3566 | } | |
3567 | ||
3568 | static int | |
0cf6dd15 TJB |
3569 | debug_to_insert_watchpoint (CORE_ADDR addr, int len, int type, |
3570 | struct expression *cond) | |
ccaa32c7 GS |
3571 | { |
3572 | int retval; | |
3573 | ||
0cf6dd15 | 3574 | retval = debug_target.to_insert_watchpoint (addr, len, type, cond); |
ccaa32c7 GS |
3575 | |
3576 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3577 | "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n", |
3578 | core_addr_to_string (addr), len, type, | |
3579 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
3580 | return retval; |
3581 | } | |
3582 | ||
3583 | static int | |
0cf6dd15 TJB |
3584 | debug_to_remove_watchpoint (CORE_ADDR addr, int len, int type, |
3585 | struct expression *cond) | |
ccaa32c7 GS |
3586 | { |
3587 | int retval; | |
3588 | ||
0cf6dd15 | 3589 | retval = debug_target.to_remove_watchpoint (addr, len, type, cond); |
ccaa32c7 GS |
3590 | |
3591 | fprintf_unfiltered (gdb_stdlog, | |
bd91e7ae OS |
3592 | "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n", |
3593 | core_addr_to_string (addr), len, type, | |
3594 | host_address_to_string (cond), (unsigned long) retval); | |
ccaa32c7 GS |
3595 | return retval; |
3596 | } | |
3597 | ||
c906108c | 3598 | static void |
fba45db2 | 3599 | debug_to_terminal_init (void) |
c906108c SS |
3600 | { |
3601 | debug_target.to_terminal_init (); | |
3602 | ||
96baa820 | 3603 | fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n"); |
c906108c SS |
3604 | } |
3605 | ||
3606 | static void | |
fba45db2 | 3607 | debug_to_terminal_inferior (void) |
c906108c SS |
3608 | { |
3609 | debug_target.to_terminal_inferior (); | |
3610 | ||
96baa820 | 3611 | fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n"); |
c906108c SS |
3612 | } |
3613 | ||
3614 | static void | |
fba45db2 | 3615 | debug_to_terminal_ours_for_output (void) |
c906108c SS |
3616 | { |
3617 | debug_target.to_terminal_ours_for_output (); | |
3618 | ||
96baa820 | 3619 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n"); |
c906108c SS |
3620 | } |
3621 | ||
3622 | static void | |
fba45db2 | 3623 | debug_to_terminal_ours (void) |
c906108c SS |
3624 | { |
3625 | debug_target.to_terminal_ours (); | |
3626 | ||
96baa820 | 3627 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n"); |
c906108c SS |
3628 | } |
3629 | ||
a790ad35 SC |
3630 | static void |
3631 | debug_to_terminal_save_ours (void) | |
3632 | { | |
3633 | debug_target.to_terminal_save_ours (); | |
3634 | ||
3635 | fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n"); | |
3636 | } | |
3637 | ||
c906108c | 3638 | static void |
fba45db2 | 3639 | debug_to_terminal_info (char *arg, int from_tty) |
c906108c SS |
3640 | { |
3641 | debug_target.to_terminal_info (arg, from_tty); | |
3642 | ||
96baa820 | 3643 | fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg, |
c906108c SS |
3644 | from_tty); |
3645 | } | |
3646 | ||
c906108c | 3647 | static void |
fba45db2 | 3648 | debug_to_load (char *args, int from_tty) |
c906108c SS |
3649 | { |
3650 | debug_target.to_load (args, from_tty); | |
3651 | ||
96baa820 | 3652 | fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty); |
c906108c SS |
3653 | } |
3654 | ||
3655 | static int | |
fba45db2 | 3656 | debug_to_lookup_symbol (char *name, CORE_ADDR *addrp) |
c906108c SS |
3657 | { |
3658 | int retval; | |
3659 | ||
3660 | retval = debug_target.to_lookup_symbol (name, addrp); | |
3661 | ||
96baa820 | 3662 | fprintf_unfiltered (gdb_stdlog, "target_lookup_symbol (%s, xxx)\n", name); |
c906108c SS |
3663 | |
3664 | return retval; | |
3665 | } | |
3666 | ||
c906108c | 3667 | static void |
39f77062 | 3668 | debug_to_post_startup_inferior (ptid_t ptid) |
c906108c | 3669 | { |
39f77062 | 3670 | debug_target.to_post_startup_inferior (ptid); |
c906108c | 3671 | |
96baa820 | 3672 | fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n", |
39f77062 | 3673 | PIDGET (ptid)); |
c906108c SS |
3674 | } |
3675 | ||
77b06cd7 | 3676 | static int |
fba45db2 | 3677 | debug_to_insert_fork_catchpoint (int pid) |
c906108c | 3678 | { |
77b06cd7 TJB |
3679 | int retval; |
3680 | ||
3681 | retval = debug_target.to_insert_fork_catchpoint (pid); | |
3682 | ||
3683 | fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d) = %d\n", | |
3684 | pid, retval); | |
c906108c | 3685 | |
77b06cd7 | 3686 | return retval; |
c906108c SS |
3687 | } |
3688 | ||
3689 | static int | |
fba45db2 | 3690 | debug_to_remove_fork_catchpoint (int pid) |
c906108c | 3691 | { |
c5aa993b | 3692 | int retval; |
c906108c SS |
3693 | |
3694 | retval = debug_target.to_remove_fork_catchpoint (pid); | |
3695 | ||
96baa820 | 3696 | fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n", |
c5aa993b | 3697 | pid, retval); |
c906108c SS |
3698 | |
3699 | return retval; | |
3700 | } | |
3701 | ||
77b06cd7 | 3702 | static int |
fba45db2 | 3703 | debug_to_insert_vfork_catchpoint (int pid) |
c906108c | 3704 | { |
77b06cd7 TJB |
3705 | int retval; |
3706 | ||
3707 | retval = debug_target.to_insert_vfork_catchpoint (pid); | |
c906108c | 3708 | |
77b06cd7 TJB |
3709 | fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d) = %d\n", |
3710 | pid, retval); | |
3711 | ||
3712 | return retval; | |
c906108c SS |
3713 | } |
3714 | ||
3715 | static int | |
fba45db2 | 3716 | debug_to_remove_vfork_catchpoint (int pid) |
c906108c | 3717 | { |
c5aa993b | 3718 | int retval; |
c906108c SS |
3719 | |
3720 | retval = debug_target.to_remove_vfork_catchpoint (pid); | |
3721 | ||
96baa820 | 3722 | fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n", |
c5aa993b | 3723 | pid, retval); |
c906108c SS |
3724 | |
3725 | return retval; | |
3726 | } | |
3727 | ||
77b06cd7 | 3728 | static int |
fba45db2 | 3729 | debug_to_insert_exec_catchpoint (int pid) |
c906108c | 3730 | { |
77b06cd7 TJB |
3731 | int retval; |
3732 | ||
3733 | retval = debug_target.to_insert_exec_catchpoint (pid); | |
c906108c | 3734 | |
77b06cd7 TJB |
3735 | fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d) = %d\n", |
3736 | pid, retval); | |
3737 | ||
3738 | return retval; | |
c906108c SS |
3739 | } |
3740 | ||
3741 | static int | |
fba45db2 | 3742 | debug_to_remove_exec_catchpoint (int pid) |
c906108c | 3743 | { |
c5aa993b | 3744 | int retval; |
c906108c SS |
3745 | |
3746 | retval = debug_target.to_remove_exec_catchpoint (pid); | |
3747 | ||
96baa820 | 3748 | fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n", |
c5aa993b | 3749 | pid, retval); |
c906108c SS |
3750 | |
3751 | return retval; | |
3752 | } | |
3753 | ||
c906108c | 3754 | static int |
fba45db2 | 3755 | debug_to_has_exited (int pid, int wait_status, int *exit_status) |
c906108c | 3756 | { |
c5aa993b | 3757 | int has_exited; |
c906108c SS |
3758 | |
3759 | has_exited = debug_target.to_has_exited (pid, wait_status, exit_status); | |
3760 | ||
96baa820 | 3761 | fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n", |
c5aa993b | 3762 | pid, wait_status, *exit_status, has_exited); |
c906108c SS |
3763 | |
3764 | return has_exited; | |
3765 | } | |
3766 | ||
c906108c | 3767 | static int |
fba45db2 | 3768 | debug_to_can_run (void) |
c906108c SS |
3769 | { |
3770 | int retval; | |
3771 | ||
3772 | retval = debug_target.to_can_run (); | |
3773 | ||
96baa820 | 3774 | fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval); |
c906108c SS |
3775 | |
3776 | return retval; | |
3777 | } | |
3778 | ||
3779 | static void | |
39f77062 | 3780 | debug_to_notice_signals (ptid_t ptid) |
c906108c | 3781 | { |
39f77062 | 3782 | debug_target.to_notice_signals (ptid); |
c906108c | 3783 | |
39f77062 KB |
3784 | fprintf_unfiltered (gdb_stdlog, "target_notice_signals (%d)\n", |
3785 | PIDGET (ptid)); | |
c906108c SS |
3786 | } |
3787 | ||
c2250ad1 UW |
3788 | static struct gdbarch * |
3789 | debug_to_thread_architecture (struct target_ops *ops, ptid_t ptid) | |
3790 | { | |
3791 | struct gdbarch *retval; | |
3792 | ||
3793 | retval = debug_target.to_thread_architecture (ops, ptid); | |
3794 | ||
3e43a32a MS |
3795 | fprintf_unfiltered (gdb_stdlog, |
3796 | "target_thread_architecture (%s) = %s [%s]\n", | |
3797 | target_pid_to_str (ptid), | |
3798 | host_address_to_string (retval), | |
c2250ad1 UW |
3799 | gdbarch_bfd_arch_info (retval)->printable_name); |
3800 | return retval; | |
3801 | } | |
3802 | ||
c906108c | 3803 | static void |
94cc34af | 3804 | debug_to_stop (ptid_t ptid) |
c906108c | 3805 | { |
94cc34af | 3806 | debug_target.to_stop (ptid); |
c906108c | 3807 | |
94cc34af PA |
3808 | fprintf_unfiltered (gdb_stdlog, "target_stop (%s)\n", |
3809 | target_pid_to_str (ptid)); | |
c906108c SS |
3810 | } |
3811 | ||
96baa820 JM |
3812 | static void |
3813 | debug_to_rcmd (char *command, | |
d9fcf2fb | 3814 | struct ui_file *outbuf) |
96baa820 JM |
3815 | { |
3816 | debug_target.to_rcmd (command, outbuf); | |
3817 | fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command); | |
3818 | } | |
3819 | ||
c906108c | 3820 | static char * |
fba45db2 | 3821 | debug_to_pid_to_exec_file (int pid) |
c906108c | 3822 | { |
c5aa993b | 3823 | char *exec_file; |
c906108c SS |
3824 | |
3825 | exec_file = debug_target.to_pid_to_exec_file (pid); | |
3826 | ||
96baa820 | 3827 | fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n", |
c5aa993b | 3828 | pid, exec_file); |
c906108c SS |
3829 | |
3830 | return exec_file; | |
3831 | } | |
3832 | ||
c906108c | 3833 | static void |
fba45db2 | 3834 | setup_target_debug (void) |
c906108c SS |
3835 | { |
3836 | memcpy (&debug_target, ¤t_target, sizeof debug_target); | |
3837 | ||
3838 | current_target.to_open = debug_to_open; | |
c906108c | 3839 | current_target.to_post_attach = debug_to_post_attach; |
c906108c | 3840 | current_target.to_prepare_to_store = debug_to_prepare_to_store; |
c8e73a31 | 3841 | current_target.deprecated_xfer_memory = deprecated_debug_xfer_memory; |
c906108c SS |
3842 | current_target.to_files_info = debug_to_files_info; |
3843 | current_target.to_insert_breakpoint = debug_to_insert_breakpoint; | |
3844 | current_target.to_remove_breakpoint = debug_to_remove_breakpoint; | |
ccaa32c7 GS |
3845 | current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint; |
3846 | current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint; | |
3847 | current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint; | |
3848 | current_target.to_insert_watchpoint = debug_to_insert_watchpoint; | |
3849 | current_target.to_remove_watchpoint = debug_to_remove_watchpoint; | |
3850 | current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint; | |
3851 | current_target.to_stopped_data_address = debug_to_stopped_data_address; | |
3e43a32a MS |
3852 | current_target.to_watchpoint_addr_within_range |
3853 | = debug_to_watchpoint_addr_within_range; | |
3854 | current_target.to_region_ok_for_hw_watchpoint | |
3855 | = debug_to_region_ok_for_hw_watchpoint; | |
3856 | current_target.to_can_accel_watchpoint_condition | |
3857 | = debug_to_can_accel_watchpoint_condition; | |
c906108c SS |
3858 | current_target.to_terminal_init = debug_to_terminal_init; |
3859 | current_target.to_terminal_inferior = debug_to_terminal_inferior; | |
3e43a32a MS |
3860 | current_target.to_terminal_ours_for_output |
3861 | = debug_to_terminal_ours_for_output; | |
c906108c | 3862 | current_target.to_terminal_ours = debug_to_terminal_ours; |
a790ad35 | 3863 | current_target.to_terminal_save_ours = debug_to_terminal_save_ours; |
c906108c | 3864 | current_target.to_terminal_info = debug_to_terminal_info; |
c906108c SS |
3865 | current_target.to_load = debug_to_load; |
3866 | current_target.to_lookup_symbol = debug_to_lookup_symbol; | |
c906108c | 3867 | current_target.to_post_startup_inferior = debug_to_post_startup_inferior; |
c906108c SS |
3868 | current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint; |
3869 | current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint; | |
3870 | current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint; | |
3871 | current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint; | |
c906108c SS |
3872 | current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint; |
3873 | current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint; | |
c906108c | 3874 | current_target.to_has_exited = debug_to_has_exited; |
c906108c SS |
3875 | current_target.to_can_run = debug_to_can_run; |
3876 | current_target.to_notice_signals = debug_to_notice_signals; | |
c906108c | 3877 | current_target.to_stop = debug_to_stop; |
96baa820 | 3878 | current_target.to_rcmd = debug_to_rcmd; |
c906108c | 3879 | current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file; |
c2250ad1 | 3880 | current_target.to_thread_architecture = debug_to_thread_architecture; |
c906108c | 3881 | } |
c906108c | 3882 | \f |
c5aa993b JM |
3883 | |
3884 | static char targ_desc[] = | |
3e43a32a MS |
3885 | "Names of targets and files being debugged.\nShows the entire \ |
3886 | stack of targets currently in use (including the exec-file,\n\ | |
c906108c SS |
3887 | core-file, and process, if any), as well as the symbol file name."; |
3888 | ||
96baa820 JM |
3889 | static void |
3890 | do_monitor_command (char *cmd, | |
3891 | int from_tty) | |
3892 | { | |
2b5fe715 AC |
3893 | if ((current_target.to_rcmd |
3894 | == (void (*) (char *, struct ui_file *)) tcomplain) | |
96baa820 | 3895 | || (current_target.to_rcmd == debug_to_rcmd |
2b5fe715 AC |
3896 | && (debug_target.to_rcmd |
3897 | == (void (*) (char *, struct ui_file *)) tcomplain))) | |
8a3fe4f8 | 3898 | error (_("\"monitor\" command not supported by this target.")); |
96baa820 JM |
3899 | target_rcmd (cmd, gdb_stdtarg); |
3900 | } | |
3901 | ||
87680a14 JB |
3902 | /* Print the name of each layers of our target stack. */ |
3903 | ||
3904 | static void | |
3905 | maintenance_print_target_stack (char *cmd, int from_tty) | |
3906 | { | |
3907 | struct target_ops *t; | |
3908 | ||
3909 | printf_filtered (_("The current target stack is:\n")); | |
3910 | ||
3911 | for (t = target_stack; t != NULL; t = t->beneath) | |
3912 | { | |
3913 | printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname); | |
3914 | } | |
3915 | } | |
3916 | ||
c6ebd6cf VP |
3917 | /* Controls if async mode is permitted. */ |
3918 | int target_async_permitted = 0; | |
3919 | ||
3920 | /* The set command writes to this variable. If the inferior is | |
3921 | executing, linux_nat_async_permitted is *not* updated. */ | |
3922 | static int target_async_permitted_1 = 0; | |
3923 | ||
3924 | static void | |
3925 | set_maintenance_target_async_permitted (char *args, int from_tty, | |
3926 | struct cmd_list_element *c) | |
3927 | { | |
c35b1492 | 3928 | if (have_live_inferiors ()) |
c6ebd6cf VP |
3929 | { |
3930 | target_async_permitted_1 = target_async_permitted; | |
3931 | error (_("Cannot change this setting while the inferior is running.")); | |
3932 | } | |
3933 | ||
3934 | target_async_permitted = target_async_permitted_1; | |
3935 | } | |
3936 | ||
3937 | static void | |
3938 | show_maintenance_target_async_permitted (struct ui_file *file, int from_tty, | |
3939 | struct cmd_list_element *c, | |
3940 | const char *value) | |
3941 | { | |
3e43a32a MS |
3942 | fprintf_filtered (file, |
3943 | _("Controlling the inferior in " | |
3944 | "asynchronous mode is %s.\n"), value); | |
c6ebd6cf VP |
3945 | } |
3946 | ||
d914c394 SS |
3947 | /* Temporary copies of permission settings. */ |
3948 | ||
3949 | static int may_write_registers_1 = 1; | |
3950 | static int may_write_memory_1 = 1; | |
3951 | static int may_insert_breakpoints_1 = 1; | |
3952 | static int may_insert_tracepoints_1 = 1; | |
3953 | static int may_insert_fast_tracepoints_1 = 1; | |
3954 | static int may_stop_1 = 1; | |
3955 | ||
3956 | /* Make the user-set values match the real values again. */ | |
3957 | ||
3958 | void | |
3959 | update_target_permissions (void) | |
3960 | { | |
3961 | may_write_registers_1 = may_write_registers; | |
3962 | may_write_memory_1 = may_write_memory; | |
3963 | may_insert_breakpoints_1 = may_insert_breakpoints; | |
3964 | may_insert_tracepoints_1 = may_insert_tracepoints; | |
3965 | may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints; | |
3966 | may_stop_1 = may_stop; | |
3967 | } | |
3968 | ||
3969 | /* The one function handles (most of) the permission flags in the same | |
3970 | way. */ | |
3971 | ||
3972 | static void | |
3973 | set_target_permissions (char *args, int from_tty, | |
3974 | struct cmd_list_element *c) | |
3975 | { | |
3976 | if (target_has_execution) | |
3977 | { | |
3978 | update_target_permissions (); | |
3979 | error (_("Cannot change this setting while the inferior is running.")); | |
3980 | } | |
3981 | ||
3982 | /* Make the real values match the user-changed values. */ | |
3983 | may_write_registers = may_write_registers_1; | |
3984 | may_insert_breakpoints = may_insert_breakpoints_1; | |
3985 | may_insert_tracepoints = may_insert_tracepoints_1; | |
3986 | may_insert_fast_tracepoints = may_insert_fast_tracepoints_1; | |
3987 | may_stop = may_stop_1; | |
3988 | update_observer_mode (); | |
3989 | } | |
3990 | ||
3991 | /* Set memory write permission independently of observer mode. */ | |
3992 | ||
3993 | static void | |
3994 | set_write_memory_permission (char *args, int from_tty, | |
3995 | struct cmd_list_element *c) | |
3996 | { | |
3997 | /* Make the real values match the user-changed values. */ | |
3998 | may_write_memory = may_write_memory_1; | |
3999 | update_observer_mode (); | |
4000 | } | |
4001 | ||
4002 | ||
c906108c | 4003 | void |
fba45db2 | 4004 | initialize_targets (void) |
c906108c SS |
4005 | { |
4006 | init_dummy_target (); | |
4007 | push_target (&dummy_target); | |
4008 | ||
4009 | add_info ("target", target_info, targ_desc); | |
4010 | add_info ("files", target_info, targ_desc); | |
4011 | ||
85c07804 AC |
4012 | add_setshow_zinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
4013 | Set target debugging."), _("\ | |
4014 | Show target debugging."), _("\ | |
333dabeb DJ |
4015 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
4016 | verbose. Changes do not take effect until the next \"run\" or \"target\"\n\ | |
85c07804 AC |
4017 | command."), |
4018 | NULL, | |
920d2a44 | 4019 | show_targetdebug, |
85c07804 | 4020 | &setdebuglist, &showdebuglist); |
3a11626d | 4021 | |
2bc416ba | 4022 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
4023 | &trust_readonly, _("\ |
4024 | Set mode for reading from readonly sections."), _("\ | |
4025 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
4026 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
4027 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 4028 | result in significant performance improvement for remote targets."), |
2c5b56ce | 4029 | NULL, |
920d2a44 | 4030 | show_trust_readonly, |
e707bbc2 | 4031 | &setlist, &showlist); |
96baa820 JM |
4032 | |
4033 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 4034 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 4035 | |
87680a14 JB |
4036 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
4037 | _("Print the name of each layer of the internal target stack."), | |
4038 | &maintenanceprintlist); | |
4039 | ||
c6ebd6cf VP |
4040 | add_setshow_boolean_cmd ("target-async", no_class, |
4041 | &target_async_permitted_1, _("\ | |
4042 | Set whether gdb controls the inferior in asynchronous mode."), _("\ | |
4043 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
4044 | Tells gdb whether to control the inferior in asynchronous mode."), | |
4045 | set_maintenance_target_async_permitted, | |
4046 | show_maintenance_target_async_permitted, | |
4047 | &setlist, | |
4048 | &showlist); | |
4049 | ||
4e5d721f | 4050 | add_setshow_boolean_cmd ("stack-cache", class_support, |
9cf1b572 | 4051 | &stack_cache_enabled_p_1, _("\ |
4e5d721f DE |
4052 | Set cache use for stack access."), _("\ |
4053 | Show cache use for stack access."), _("\ | |
4054 | When on, use the data cache for all stack access, regardless of any\n\ | |
4055 | configured memory regions. This improves remote performance significantly.\n\ | |
4056 | By default, caching for stack access is on."), | |
4057 | set_stack_cache_enabled_p, | |
4058 | show_stack_cache_enabled_p, | |
4059 | &setlist, &showlist); | |
4060 | ||
d914c394 SS |
4061 | add_setshow_boolean_cmd ("may-write-registers", class_support, |
4062 | &may_write_registers_1, _("\ | |
4063 | Set permission to write into registers."), _("\ | |
4064 | Show permission to write into registers."), _("\ | |
4065 | When this permission is on, GDB may write into the target's registers.\n\ | |
4066 | Otherwise, any sort of write attempt will result in an error."), | |
4067 | set_target_permissions, NULL, | |
4068 | &setlist, &showlist); | |
4069 | ||
4070 | add_setshow_boolean_cmd ("may-write-memory", class_support, | |
4071 | &may_write_memory_1, _("\ | |
4072 | Set permission to write into target memory."), _("\ | |
4073 | Show permission to write into target memory."), _("\ | |
4074 | When this permission is on, GDB may write into the target's memory.\n\ | |
4075 | Otherwise, any sort of write attempt will result in an error."), | |
4076 | set_write_memory_permission, NULL, | |
4077 | &setlist, &showlist); | |
4078 | ||
4079 | add_setshow_boolean_cmd ("may-insert-breakpoints", class_support, | |
4080 | &may_insert_breakpoints_1, _("\ | |
4081 | Set permission to insert breakpoints in the target."), _("\ | |
4082 | Show permission to insert breakpoints in the target."), _("\ | |
4083 | When this permission is on, GDB may insert breakpoints in the program.\n\ | |
4084 | Otherwise, any sort of insertion attempt will result in an error."), | |
4085 | set_target_permissions, NULL, | |
4086 | &setlist, &showlist); | |
4087 | ||
4088 | add_setshow_boolean_cmd ("may-insert-tracepoints", class_support, | |
4089 | &may_insert_tracepoints_1, _("\ | |
4090 | Set permission to insert tracepoints in the target."), _("\ | |
4091 | Show permission to insert tracepoints in the target."), _("\ | |
4092 | When this permission is on, GDB may insert tracepoints in the program.\n\ | |
4093 | Otherwise, any sort of insertion attempt will result in an error."), | |
4094 | set_target_permissions, NULL, | |
4095 | &setlist, &showlist); | |
4096 | ||
4097 | add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support, | |
4098 | &may_insert_fast_tracepoints_1, _("\ | |
4099 | Set permission to insert fast tracepoints in the target."), _("\ | |
4100 | Show permission to insert fast tracepoints in the target."), _("\ | |
4101 | When this permission is on, GDB may insert fast tracepoints.\n\ | |
4102 | Otherwise, any sort of insertion attempt will result in an error."), | |
4103 | set_target_permissions, NULL, | |
4104 | &setlist, &showlist); | |
4105 | ||
4106 | add_setshow_boolean_cmd ("may-interrupt", class_support, | |
4107 | &may_stop_1, _("\ | |
4108 | Set permission to interrupt or signal the target."), _("\ | |
4109 | Show permission to interrupt or signal the target."), _("\ | |
4110 | When this permission is on, GDB may interrupt/stop the target's execution.\n\ | |
4111 | Otherwise, any attempt to interrupt or stop will be ignored."), | |
4112 | set_target_permissions, NULL, | |
4113 | &setlist, &showlist); | |
4114 | ||
4115 | ||
8add0441 | 4116 | target_dcache = dcache_init (); |
c906108c | 4117 | } |