Commit | Line | Data |
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c906108c | 1 | /* Select target systems and architectures at runtime for GDB. |
7998dfc3 | 2 | |
6aba47ca | 3 | Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
0fb0cc75 | 4 | 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
f6519ebc | 5 | Free Software Foundation, Inc. |
7998dfc3 | 6 | |
c906108c SS |
7 | Contributed by Cygnus Support. |
8 | ||
c5aa993b | 9 | This file is part of GDB. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is free software; you can redistribute it and/or modify |
12 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 13 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 14 | (at your option) any later version. |
c906108c | 15 | |
c5aa993b JM |
16 | This program is distributed in the hope that it will be useful, |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
c906108c | 20 | |
c5aa993b | 21 | You should have received a copy of the GNU General Public License |
a9762ec7 | 22 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
23 | |
24 | #include "defs.h" | |
25 | #include <errno.h> | |
c906108c SS |
26 | #include "gdb_string.h" |
27 | #include "target.h" | |
28 | #include "gdbcmd.h" | |
29 | #include "symtab.h" | |
30 | #include "inferior.h" | |
31 | #include "bfd.h" | |
32 | #include "symfile.h" | |
33 | #include "objfiles.h" | |
03f2053f | 34 | #include "gdb_wait.h" |
4930751a | 35 | #include "dcache.h" |
c906108c | 36 | #include <signal.h> |
4e052eda | 37 | #include "regcache.h" |
0088c768 | 38 | #include "gdb_assert.h" |
b6591e8b | 39 | #include "gdbcore.h" |
9e35dae4 | 40 | #include "exceptions.h" |
424163ea | 41 | #include "target-descriptions.h" |
e1ac3328 | 42 | #include "gdbthread.h" |
b9db4ced | 43 | #include "solib.h" |
07b82ea5 | 44 | #include "exec.h" |
c906108c | 45 | |
a14ed312 | 46 | static void target_info (char *, int); |
c906108c | 47 | |
a14ed312 | 48 | static void kill_or_be_killed (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 | |
4ecb6f27 | 59 | static void tcomplain (void) ATTR_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 | |
a14ed312 | 75 | static void nosupport_runtime (void); |
392a587b | 76 | |
4b8a223f | 77 | static LONGEST default_xfer_partial (struct target_ops *ops, |
0088c768 | 78 | enum target_object object, |
1b0ba102 AC |
79 | const char *annex, gdb_byte *readbuf, |
80 | const gdb_byte *writebuf, | |
8aa91c1e | 81 | ULONGEST offset, LONGEST len); |
0088c768 | 82 | |
cf7a04e8 DJ |
83 | static LONGEST current_xfer_partial (struct target_ops *ops, |
84 | enum target_object object, | |
85 | const char *annex, gdb_byte *readbuf, | |
86 | const gdb_byte *writebuf, | |
87 | ULONGEST offset, LONGEST len); | |
c906108c | 88 | |
cf7a04e8 DJ |
89 | static LONGEST target_xfer_partial (struct target_ops *ops, |
90 | enum target_object object, | |
91 | const char *annex, | |
92 | void *readbuf, const void *writebuf, | |
93 | ULONGEST offset, LONGEST len); | |
c906108c | 94 | |
a14ed312 | 95 | static void init_dummy_target (void); |
c906108c | 96 | |
aa869812 AC |
97 | static struct target_ops debug_target; |
98 | ||
a14ed312 | 99 | static void debug_to_open (char *, int); |
c906108c | 100 | |
316f2060 | 101 | static void debug_to_prepare_to_store (struct regcache *); |
c906108c | 102 | |
a14ed312 | 103 | static void debug_to_files_info (struct target_ops *); |
c906108c | 104 | |
8181d85f | 105 | static int debug_to_insert_breakpoint (struct bp_target_info *); |
c906108c | 106 | |
8181d85f | 107 | static int debug_to_remove_breakpoint (struct bp_target_info *); |
c906108c | 108 | |
ccaa32c7 GS |
109 | static int debug_to_can_use_hw_breakpoint (int, int, int); |
110 | ||
8181d85f | 111 | static int debug_to_insert_hw_breakpoint (struct bp_target_info *); |
ccaa32c7 | 112 | |
8181d85f | 113 | static int debug_to_remove_hw_breakpoint (struct bp_target_info *); |
ccaa32c7 GS |
114 | |
115 | static int debug_to_insert_watchpoint (CORE_ADDR, int, int); | |
116 | ||
117 | static int debug_to_remove_watchpoint (CORE_ADDR, int, int); | |
118 | ||
119 | static int debug_to_stopped_by_watchpoint (void); | |
120 | ||
4aa7a7f5 | 121 | static int debug_to_stopped_data_address (struct target_ops *, CORE_ADDR *); |
ccaa32c7 | 122 | |
5009afc5 AS |
123 | static int debug_to_watchpoint_addr_within_range (struct target_ops *, |
124 | CORE_ADDR, CORE_ADDR, int); | |
125 | ||
e0d24f8d WZ |
126 | static int debug_to_region_ok_for_hw_watchpoint (CORE_ADDR, int); |
127 | ||
a14ed312 | 128 | static void debug_to_terminal_init (void); |
c906108c | 129 | |
a14ed312 | 130 | static void debug_to_terminal_inferior (void); |
c906108c | 131 | |
a14ed312 | 132 | static void debug_to_terminal_ours_for_output (void); |
c906108c | 133 | |
a790ad35 SC |
134 | static void debug_to_terminal_save_ours (void); |
135 | ||
a14ed312 | 136 | static void debug_to_terminal_ours (void); |
c906108c | 137 | |
a14ed312 | 138 | static void debug_to_terminal_info (char *, int); |
c906108c | 139 | |
a14ed312 | 140 | static void debug_to_load (char *, int); |
c906108c | 141 | |
a14ed312 | 142 | static int debug_to_lookup_symbol (char *, CORE_ADDR *); |
c906108c | 143 | |
a14ed312 | 144 | static int debug_to_can_run (void); |
c906108c | 145 | |
39f77062 | 146 | static void debug_to_notice_signals (ptid_t); |
c906108c | 147 | |
94cc34af | 148 | static void debug_to_stop (ptid_t); |
c906108c | 149 | |
5ac10fd1 AC |
150 | /* NOTE: cagney/2004-09-29: Many targets reference this variable in |
151 | wierd and mysterious ways. Putting the variable here lets those | |
152 | wierd and mysterious ways keep building while they are being | |
153 | converted to the inferior inheritance structure. */ | |
1df84f13 | 154 | struct target_ops deprecated_child_ops; |
5ac10fd1 | 155 | |
c906108c | 156 | /* Pointer to array of target architecture structures; the size of the |
2bc416ba | 157 | array; the current index into the array; the allocated size of the |
c906108c SS |
158 | array. */ |
159 | struct target_ops **target_structs; | |
160 | unsigned target_struct_size; | |
161 | unsigned target_struct_index; | |
162 | unsigned target_struct_allocsize; | |
163 | #define DEFAULT_ALLOCSIZE 10 | |
164 | ||
165 | /* The initial current target, so that there is always a semi-valid | |
166 | current target. */ | |
167 | ||
168 | static struct target_ops dummy_target; | |
169 | ||
170 | /* Top of target stack. */ | |
171 | ||
258b763a | 172 | static struct target_ops *target_stack; |
c906108c SS |
173 | |
174 | /* The target structure we are currently using to talk to a process | |
175 | or file or whatever "inferior" we have. */ | |
176 | ||
177 | struct target_ops current_target; | |
178 | ||
179 | /* Command list for target. */ | |
180 | ||
181 | static struct cmd_list_element *targetlist = NULL; | |
182 | ||
cf7a04e8 DJ |
183 | /* Nonzero if we should trust readonly sections from the |
184 | executable when reading memory. */ | |
185 | ||
186 | static int trust_readonly = 0; | |
187 | ||
8defab1a DJ |
188 | /* Nonzero if we should show true memory content including |
189 | memory breakpoint inserted by gdb. */ | |
190 | ||
191 | static int show_memory_breakpoints = 0; | |
192 | ||
c906108c SS |
193 | /* Non-zero if we want to see trace of target level stuff. */ |
194 | ||
195 | static int targetdebug = 0; | |
920d2a44 AC |
196 | static void |
197 | show_targetdebug (struct ui_file *file, int from_tty, | |
198 | struct cmd_list_element *c, const char *value) | |
199 | { | |
200 | fprintf_filtered (file, _("Target debugging is %s.\n"), value); | |
201 | } | |
c906108c | 202 | |
a14ed312 | 203 | static void setup_target_debug (void); |
c906108c | 204 | |
4930751a C |
205 | DCACHE *target_dcache; |
206 | ||
c906108c SS |
207 | /* The user just typed 'target' without the name of a target. */ |
208 | ||
c906108c | 209 | static void |
fba45db2 | 210 | target_command (char *arg, int from_tty) |
c906108c SS |
211 | { |
212 | fputs_filtered ("Argument required (target name). Try `help target'\n", | |
213 | gdb_stdout); | |
214 | } | |
215 | ||
c35b1492 PA |
216 | /* Default target_has_* methods for process_stratum targets. */ |
217 | ||
218 | int | |
219 | default_child_has_all_memory (struct target_ops *ops) | |
220 | { | |
221 | /* If no inferior selected, then we can't read memory here. */ | |
222 | if (ptid_equal (inferior_ptid, null_ptid)) | |
223 | return 0; | |
224 | ||
225 | return 1; | |
226 | } | |
227 | ||
228 | int | |
229 | default_child_has_memory (struct target_ops *ops) | |
230 | { | |
231 | /* If no inferior selected, then we can't read memory here. */ | |
232 | if (ptid_equal (inferior_ptid, null_ptid)) | |
233 | return 0; | |
234 | ||
235 | return 1; | |
236 | } | |
237 | ||
238 | int | |
239 | default_child_has_stack (struct target_ops *ops) | |
240 | { | |
241 | /* If no inferior selected, there's no stack. */ | |
242 | if (ptid_equal (inferior_ptid, null_ptid)) | |
243 | return 0; | |
244 | ||
245 | return 1; | |
246 | } | |
247 | ||
248 | int | |
249 | default_child_has_registers (struct target_ops *ops) | |
250 | { | |
251 | /* Can't read registers from no inferior. */ | |
252 | if (ptid_equal (inferior_ptid, null_ptid)) | |
253 | return 0; | |
254 | ||
255 | return 1; | |
256 | } | |
257 | ||
258 | int | |
259 | default_child_has_execution (struct target_ops *ops) | |
260 | { | |
261 | /* If there's no thread selected, then we can't make it run through | |
262 | hoops. */ | |
263 | if (ptid_equal (inferior_ptid, null_ptid)) | |
264 | return 0; | |
265 | ||
266 | return 1; | |
267 | } | |
268 | ||
269 | ||
270 | int | |
271 | target_has_all_memory_1 (void) | |
272 | { | |
273 | struct target_ops *t; | |
274 | ||
275 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
276 | if (t->to_has_all_memory (t)) | |
277 | return 1; | |
278 | ||
279 | return 0; | |
280 | } | |
281 | ||
282 | int | |
283 | target_has_memory_1 (void) | |
284 | { | |
285 | struct target_ops *t; | |
286 | ||
287 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
288 | if (t->to_has_memory (t)) | |
289 | return 1; | |
290 | ||
291 | return 0; | |
292 | } | |
293 | ||
294 | int | |
295 | target_has_stack_1 (void) | |
296 | { | |
297 | struct target_ops *t; | |
298 | ||
299 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
300 | if (t->to_has_stack (t)) | |
301 | return 1; | |
302 | ||
303 | return 0; | |
304 | } | |
305 | ||
306 | int | |
307 | target_has_registers_1 (void) | |
308 | { | |
309 | struct target_ops *t; | |
310 | ||
311 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
312 | if (t->to_has_registers (t)) | |
313 | return 1; | |
314 | ||
315 | return 0; | |
316 | } | |
317 | ||
318 | int | |
319 | target_has_execution_1 (void) | |
320 | { | |
321 | struct target_ops *t; | |
322 | ||
323 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
324 | if (t->to_has_execution (t)) | |
325 | return 1; | |
326 | ||
327 | return 0; | |
328 | } | |
329 | ||
c906108c SS |
330 | /* Add a possible target architecture to the list. */ |
331 | ||
332 | void | |
fba45db2 | 333 | add_target (struct target_ops *t) |
c906108c | 334 | { |
0088c768 | 335 | /* Provide default values for all "must have" methods. */ |
0b603eba AC |
336 | if (t->to_xfer_partial == NULL) |
337 | t->to_xfer_partial = default_xfer_partial; | |
0088c768 | 338 | |
c35b1492 PA |
339 | if (t->to_has_all_memory == NULL) |
340 | t->to_has_all_memory = (int (*) (struct target_ops *)) return_zero; | |
341 | ||
342 | if (t->to_has_memory == NULL) | |
343 | t->to_has_memory = (int (*) (struct target_ops *)) return_zero; | |
344 | ||
345 | if (t->to_has_stack == NULL) | |
346 | t->to_has_stack = (int (*) (struct target_ops *)) return_zero; | |
347 | ||
348 | if (t->to_has_registers == NULL) | |
349 | t->to_has_registers = (int (*) (struct target_ops *)) return_zero; | |
350 | ||
351 | if (t->to_has_execution == NULL) | |
352 | t->to_has_execution = (int (*) (struct target_ops *)) return_zero; | |
353 | ||
c906108c SS |
354 | if (!target_structs) |
355 | { | |
356 | target_struct_allocsize = DEFAULT_ALLOCSIZE; | |
357 | target_structs = (struct target_ops **) xmalloc | |
358 | (target_struct_allocsize * sizeof (*target_structs)); | |
359 | } | |
360 | if (target_struct_size >= target_struct_allocsize) | |
361 | { | |
362 | target_struct_allocsize *= 2; | |
363 | target_structs = (struct target_ops **) | |
c5aa993b JM |
364 | xrealloc ((char *) target_structs, |
365 | target_struct_allocsize * sizeof (*target_structs)); | |
c906108c SS |
366 | } |
367 | target_structs[target_struct_size++] = t; | |
c906108c SS |
368 | |
369 | if (targetlist == NULL) | |
1bedd215 AC |
370 | add_prefix_cmd ("target", class_run, target_command, _("\ |
371 | Connect to a target machine or process.\n\ | |
c906108c SS |
372 | The first argument is the type or protocol of the target machine.\n\ |
373 | Remaining arguments are interpreted by the target protocol. For more\n\ | |
374 | information on the arguments for a particular protocol, type\n\ | |
1bedd215 | 375 | `help target ' followed by the protocol name."), |
c906108c SS |
376 | &targetlist, "target ", 0, &cmdlist); |
377 | add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc, &targetlist); | |
378 | } | |
379 | ||
380 | /* Stub functions */ | |
381 | ||
382 | void | |
fba45db2 | 383 | target_ignore (void) |
c906108c SS |
384 | { |
385 | } | |
386 | ||
7d85a9c0 JB |
387 | void |
388 | target_kill (void) | |
389 | { | |
390 | struct target_ops *t; | |
391 | ||
392 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
393 | if (t->to_kill != NULL) | |
394 | { | |
395 | if (targetdebug) | |
396 | fprintf_unfiltered (gdb_stdlog, "target_kill ()\n"); | |
397 | ||
398 | t->to_kill (t); | |
399 | return; | |
400 | } | |
401 | ||
402 | noprocess (); | |
403 | } | |
404 | ||
11cf8741 JM |
405 | void |
406 | target_load (char *arg, int from_tty) | |
407 | { | |
4930751a | 408 | dcache_invalidate (target_dcache); |
11cf8741 JM |
409 | (*current_target.to_load) (arg, from_tty); |
410 | } | |
411 | ||
947b8855 PA |
412 | void |
413 | target_create_inferior (char *exec_file, char *args, | |
414 | char **env, int from_tty) | |
136d6dae VP |
415 | { |
416 | struct target_ops *t; | |
417 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
418 | { | |
419 | if (t->to_create_inferior != NULL) | |
420 | { | |
421 | t->to_create_inferior (t, exec_file, args, env, from_tty); | |
947b8855 PA |
422 | if (targetdebug) |
423 | fprintf_unfiltered (gdb_stdlog, | |
424 | "target_create_inferior (%s, %s, xxx, %d)\n", | |
425 | exec_file, args, from_tty); | |
136d6dae VP |
426 | return; |
427 | } | |
428 | } | |
429 | ||
430 | internal_error (__FILE__, __LINE__, | |
431 | "could not find a target to create inferior"); | |
432 | } | |
433 | ||
d9d2d8b6 PA |
434 | void |
435 | target_terminal_inferior (void) | |
436 | { | |
437 | /* A background resume (``run&'') should leave GDB in control of the | |
438 | terminal. */ | |
439 | if (target_is_async_p () && !sync_execution) | |
440 | return; | |
441 | ||
442 | /* If GDB is resuming the inferior in the foreground, install | |
443 | inferior's terminal modes. */ | |
444 | (*current_target.to_terminal_inferior) (); | |
445 | } | |
136d6dae | 446 | |
c906108c | 447 | static int |
fba45db2 KB |
448 | nomemory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
449 | struct target_ops *t) | |
c906108c | 450 | { |
c5aa993b JM |
451 | errno = EIO; /* Can't read/write this location */ |
452 | return 0; /* No bytes handled */ | |
c906108c SS |
453 | } |
454 | ||
455 | static void | |
fba45db2 | 456 | tcomplain (void) |
c906108c | 457 | { |
8a3fe4f8 | 458 | error (_("You can't do that when your target is `%s'"), |
c906108c SS |
459 | current_target.to_shortname); |
460 | } | |
461 | ||
462 | void | |
fba45db2 | 463 | noprocess (void) |
c906108c | 464 | { |
8a3fe4f8 | 465 | error (_("You can't do that without a process to debug.")); |
c906108c SS |
466 | } |
467 | ||
c906108c | 468 | static int |
fba45db2 | 469 | nosymbol (char *name, CORE_ADDR *addrp) |
c906108c | 470 | { |
c5aa993b | 471 | return 1; /* Symbol does not exist in target env */ |
c906108c SS |
472 | } |
473 | ||
392a587b | 474 | static void |
fba45db2 | 475 | nosupport_runtime (void) |
c906108c | 476 | { |
39f77062 | 477 | if (ptid_equal (inferior_ptid, null_ptid)) |
c906108c SS |
478 | noprocess (); |
479 | else | |
8a3fe4f8 | 480 | error (_("No run-time support for this")); |
c906108c SS |
481 | } |
482 | ||
483 | ||
c906108c | 484 | static void |
fba45db2 | 485 | default_terminal_info (char *args, int from_tty) |
c906108c | 486 | { |
a3f17187 | 487 | printf_unfiltered (_("No saved terminal information.\n")); |
c906108c SS |
488 | } |
489 | ||
490 | /* This is the default target_create_inferior and target_attach function. | |
491 | If the current target is executing, it asks whether to kill it off. | |
492 | If this function returns without calling error(), it has killed off | |
493 | the target, and the operation should be attempted. */ | |
494 | ||
495 | static void | |
fba45db2 | 496 | kill_or_be_killed (int from_tty) |
c906108c SS |
497 | { |
498 | if (target_has_execution) | |
499 | { | |
a3f17187 | 500 | printf_unfiltered (_("You are already running a program:\n")); |
c906108c | 501 | target_files_info (); |
9e2f0ad4 | 502 | if (query (_("Kill it? "))) |
c5aa993b JM |
503 | { |
504 | target_kill (); | |
505 | if (target_has_execution) | |
8a3fe4f8 | 506 | error (_("Killing the program did not help.")); |
c5aa993b JM |
507 | return; |
508 | } | |
509 | else | |
510 | { | |
8a3fe4f8 | 511 | error (_("Program not killed.")); |
c5aa993b | 512 | } |
c906108c | 513 | } |
c5aa993b | 514 | tcomplain (); |
c906108c SS |
515 | } |
516 | ||
0ef643c8 JB |
517 | /* A default implementation for the to_get_ada_task_ptid target method. |
518 | ||
519 | This function builds the PTID by using both LWP and TID as part of | |
520 | the PTID lwp and tid elements. The pid used is the pid of the | |
521 | inferior_ptid. */ | |
522 | ||
2c0b251b | 523 | static ptid_t |
0ef643c8 JB |
524 | default_get_ada_task_ptid (long lwp, long tid) |
525 | { | |
526 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid); | |
527 | } | |
528 | ||
7998dfc3 AC |
529 | /* Go through the target stack from top to bottom, copying over zero |
530 | entries in current_target, then filling in still empty entries. In | |
531 | effect, we are doing class inheritance through the pushed target | |
532 | vectors. | |
533 | ||
534 | NOTE: cagney/2003-10-17: The problem with this inheritance, as it | |
535 | is currently implemented, is that it discards any knowledge of | |
536 | which target an inherited method originally belonged to. | |
537 | Consequently, new new target methods should instead explicitly and | |
538 | locally search the target stack for the target that can handle the | |
539 | request. */ | |
c906108c SS |
540 | |
541 | static void | |
7998dfc3 | 542 | update_current_target (void) |
c906108c | 543 | { |
7998dfc3 AC |
544 | struct target_ops *t; |
545 | ||
08d8bcd7 | 546 | /* First, reset current's contents. */ |
7998dfc3 AC |
547 | memset (¤t_target, 0, sizeof (current_target)); |
548 | ||
549 | #define INHERIT(FIELD, TARGET) \ | |
550 | if (!current_target.FIELD) \ | |
551 | current_target.FIELD = (TARGET)->FIELD | |
552 | ||
553 | for (t = target_stack; t; t = t->beneath) | |
554 | { | |
555 | INHERIT (to_shortname, t); | |
556 | INHERIT (to_longname, t); | |
557 | INHERIT (to_doc, t); | |
b52323fa UW |
558 | /* Do not inherit to_open. */ |
559 | /* Do not inherit to_close. */ | |
136d6dae | 560 | /* Do not inherit to_attach. */ |
7998dfc3 | 561 | INHERIT (to_post_attach, t); |
dc177b7a | 562 | INHERIT (to_attach_no_wait, t); |
136d6dae | 563 | /* Do not inherit to_detach. */ |
597320e7 | 564 | /* Do not inherit to_disconnect. */ |
28439f5e | 565 | /* Do not inherit to_resume. */ |
117de6a9 | 566 | /* Do not inherit to_wait. */ |
28439f5e PA |
567 | /* Do not inherit to_fetch_registers. */ |
568 | /* Do not inherit to_store_registers. */ | |
7998dfc3 | 569 | INHERIT (to_prepare_to_store, t); |
c8e73a31 | 570 | INHERIT (deprecated_xfer_memory, t); |
7998dfc3 AC |
571 | INHERIT (to_files_info, t); |
572 | INHERIT (to_insert_breakpoint, t); | |
573 | INHERIT (to_remove_breakpoint, t); | |
574 | INHERIT (to_can_use_hw_breakpoint, t); | |
575 | INHERIT (to_insert_hw_breakpoint, t); | |
576 | INHERIT (to_remove_hw_breakpoint, t); | |
577 | INHERIT (to_insert_watchpoint, t); | |
578 | INHERIT (to_remove_watchpoint, t); | |
579 | INHERIT (to_stopped_data_address, t); | |
74174d2e | 580 | INHERIT (to_have_steppable_watchpoint, t); |
7998dfc3 | 581 | INHERIT (to_have_continuable_watchpoint, t); |
5009afc5 AS |
582 | INHERIT (to_stopped_by_watchpoint, t); |
583 | INHERIT (to_watchpoint_addr_within_range, t); | |
e0d24f8d | 584 | INHERIT (to_region_ok_for_hw_watchpoint, t); |
7998dfc3 AC |
585 | INHERIT (to_terminal_init, t); |
586 | INHERIT (to_terminal_inferior, t); | |
587 | INHERIT (to_terminal_ours_for_output, t); | |
588 | INHERIT (to_terminal_ours, t); | |
589 | INHERIT (to_terminal_save_ours, t); | |
590 | INHERIT (to_terminal_info, t); | |
7d85a9c0 | 591 | /* Do not inherit to_kill. */ |
7998dfc3 AC |
592 | INHERIT (to_load, t); |
593 | INHERIT (to_lookup_symbol, t); | |
136d6dae | 594 | /* Do no inherit to_create_inferior. */ |
7998dfc3 AC |
595 | INHERIT (to_post_startup_inferior, t); |
596 | INHERIT (to_acknowledge_created_inferior, t); | |
597 | INHERIT (to_insert_fork_catchpoint, t); | |
598 | INHERIT (to_remove_fork_catchpoint, t); | |
599 | INHERIT (to_insert_vfork_catchpoint, t); | |
600 | INHERIT (to_remove_vfork_catchpoint, t); | |
ee057212 | 601 | /* Do not inherit to_follow_fork. */ |
7998dfc3 AC |
602 | INHERIT (to_insert_exec_catchpoint, t); |
603 | INHERIT (to_remove_exec_catchpoint, t); | |
7998dfc3 | 604 | INHERIT (to_has_exited, t); |
117de6a9 | 605 | /* Do not inherit to_mourn_inferiour. */ |
7998dfc3 AC |
606 | INHERIT (to_can_run, t); |
607 | INHERIT (to_notice_signals, t); | |
28439f5e PA |
608 | /* Do not inherit to_thread_alive. */ |
609 | /* Do not inherit to_find_new_threads. */ | |
117de6a9 | 610 | /* Do not inherit to_pid_to_str. */ |
7998dfc3 AC |
611 | INHERIT (to_extra_thread_info, t); |
612 | INHERIT (to_stop, t); | |
4b8a223f | 613 | /* Do not inherit to_xfer_partial. */ |
7998dfc3 | 614 | INHERIT (to_rcmd, t); |
7998dfc3 | 615 | INHERIT (to_pid_to_exec_file, t); |
49d03eab | 616 | INHERIT (to_log_command, t); |
7998dfc3 | 617 | INHERIT (to_stratum, t); |
c35b1492 PA |
618 | /* Do not inherit to_has_all_memory */ |
619 | /* Do not inherit to_has_memory */ | |
620 | /* Do not inherit to_has_stack */ | |
621 | /* Do not inherit to_has_registers */ | |
622 | /* Do not inherit to_has_execution */ | |
7998dfc3 | 623 | INHERIT (to_has_thread_control, t); |
7998dfc3 AC |
624 | INHERIT (to_can_async_p, t); |
625 | INHERIT (to_is_async_p, t); | |
626 | INHERIT (to_async, t); | |
b84876c2 | 627 | INHERIT (to_async_mask, t); |
7998dfc3 AC |
628 | INHERIT (to_find_memory_regions, t); |
629 | INHERIT (to_make_corefile_notes, t); | |
117de6a9 | 630 | /* Do not inherit to_get_thread_local_address. */ |
b2175913 | 631 | INHERIT (to_can_execute_reverse, t); |
424163ea | 632 | /* Do not inherit to_read_description. */ |
0ef643c8 | 633 | INHERIT (to_get_ada_task_ptid, t); |
08388c79 | 634 | /* Do not inherit to_search_memory. */ |
8a305172 | 635 | INHERIT (to_supports_multi_process, t); |
7998dfc3 | 636 | INHERIT (to_magic, t); |
fd79ecee | 637 | /* Do not inherit to_memory_map. */ |
a76d924d DJ |
638 | /* Do not inherit to_flash_erase. */ |
639 | /* Do not inherit to_flash_done. */ | |
7998dfc3 AC |
640 | } |
641 | #undef INHERIT | |
642 | ||
643 | /* Clean up a target struct so it no longer has any zero pointers in | |
0088c768 AC |
644 | it. Some entries are defaulted to a method that print an error, |
645 | others are hard-wired to a standard recursive default. */ | |
c906108c SS |
646 | |
647 | #define de_fault(field, value) \ | |
7998dfc3 AC |
648 | if (!current_target.field) \ |
649 | current_target.field = value | |
0d06e24b | 650 | |
2bc416ba DJ |
651 | de_fault (to_open, |
652 | (void (*) (char *, int)) | |
0d06e24b | 653 | tcomplain); |
2bc416ba DJ |
654 | de_fault (to_close, |
655 | (void (*) (int)) | |
0d06e24b | 656 | target_ignore); |
2bc416ba DJ |
657 | de_fault (to_post_attach, |
658 | (void (*) (int)) | |
0d06e24b | 659 | target_ignore); |
2bc416ba | 660 | de_fault (to_prepare_to_store, |
316f2060 | 661 | (void (*) (struct regcache *)) |
0d06e24b | 662 | noprocess); |
2bc416ba DJ |
663 | de_fault (deprecated_xfer_memory, |
664 | (int (*) (CORE_ADDR, gdb_byte *, int, int, struct mem_attrib *, struct target_ops *)) | |
0d06e24b | 665 | nomemory); |
2bc416ba DJ |
666 | de_fault (to_files_info, |
667 | (void (*) (struct target_ops *)) | |
0d06e24b | 668 | target_ignore); |
2bc416ba | 669 | de_fault (to_insert_breakpoint, |
0d06e24b | 670 | memory_insert_breakpoint); |
2bc416ba | 671 | de_fault (to_remove_breakpoint, |
0d06e24b | 672 | memory_remove_breakpoint); |
ccaa32c7 GS |
673 | de_fault (to_can_use_hw_breakpoint, |
674 | (int (*) (int, int, int)) | |
675 | return_zero); | |
676 | de_fault (to_insert_hw_breakpoint, | |
8181d85f | 677 | (int (*) (struct bp_target_info *)) |
ccaa32c7 GS |
678 | return_minus_one); |
679 | de_fault (to_remove_hw_breakpoint, | |
8181d85f | 680 | (int (*) (struct bp_target_info *)) |
ccaa32c7 GS |
681 | return_minus_one); |
682 | de_fault (to_insert_watchpoint, | |
683 | (int (*) (CORE_ADDR, int, int)) | |
684 | return_minus_one); | |
685 | de_fault (to_remove_watchpoint, | |
686 | (int (*) (CORE_ADDR, int, int)) | |
687 | return_minus_one); | |
688 | de_fault (to_stopped_by_watchpoint, | |
689 | (int (*) (void)) | |
690 | return_zero); | |
691 | de_fault (to_stopped_data_address, | |
4aa7a7f5 | 692 | (int (*) (struct target_ops *, CORE_ADDR *)) |
ccaa32c7 | 693 | return_zero); |
5009afc5 AS |
694 | de_fault (to_watchpoint_addr_within_range, |
695 | default_watchpoint_addr_within_range); | |
e0d24f8d WZ |
696 | de_fault (to_region_ok_for_hw_watchpoint, |
697 | default_region_ok_for_hw_watchpoint); | |
2bc416ba DJ |
698 | de_fault (to_terminal_init, |
699 | (void (*) (void)) | |
0d06e24b | 700 | target_ignore); |
2bc416ba DJ |
701 | de_fault (to_terminal_inferior, |
702 | (void (*) (void)) | |
0d06e24b | 703 | target_ignore); |
2bc416ba DJ |
704 | de_fault (to_terminal_ours_for_output, |
705 | (void (*) (void)) | |
0d06e24b | 706 | target_ignore); |
2bc416ba DJ |
707 | de_fault (to_terminal_ours, |
708 | (void (*) (void)) | |
0d06e24b | 709 | target_ignore); |
2bc416ba DJ |
710 | de_fault (to_terminal_save_ours, |
711 | (void (*) (void)) | |
a790ad35 | 712 | target_ignore); |
2bc416ba | 713 | de_fault (to_terminal_info, |
0d06e24b | 714 | default_terminal_info); |
2bc416ba DJ |
715 | de_fault (to_load, |
716 | (void (*) (char *, int)) | |
0d06e24b | 717 | tcomplain); |
2bc416ba DJ |
718 | de_fault (to_lookup_symbol, |
719 | (int (*) (char *, CORE_ADDR *)) | |
0d06e24b | 720 | nosymbol); |
2bc416ba DJ |
721 | de_fault (to_post_startup_inferior, |
722 | (void (*) (ptid_t)) | |
0d06e24b | 723 | target_ignore); |
2bc416ba DJ |
724 | de_fault (to_acknowledge_created_inferior, |
725 | (void (*) (int)) | |
0d06e24b | 726 | target_ignore); |
2bc416ba DJ |
727 | de_fault (to_insert_fork_catchpoint, |
728 | (void (*) (int)) | |
0d06e24b | 729 | tcomplain); |
2bc416ba DJ |
730 | de_fault (to_remove_fork_catchpoint, |
731 | (int (*) (int)) | |
0d06e24b | 732 | tcomplain); |
2bc416ba DJ |
733 | de_fault (to_insert_vfork_catchpoint, |
734 | (void (*) (int)) | |
0d06e24b | 735 | tcomplain); |
2bc416ba DJ |
736 | de_fault (to_remove_vfork_catchpoint, |
737 | (int (*) (int)) | |
0d06e24b | 738 | tcomplain); |
2bc416ba DJ |
739 | de_fault (to_insert_exec_catchpoint, |
740 | (void (*) (int)) | |
0d06e24b | 741 | tcomplain); |
2bc416ba DJ |
742 | de_fault (to_remove_exec_catchpoint, |
743 | (int (*) (int)) | |
0d06e24b | 744 | tcomplain); |
2bc416ba DJ |
745 | de_fault (to_has_exited, |
746 | (int (*) (int, int, int *)) | |
0d06e24b | 747 | return_zero); |
2bc416ba | 748 | de_fault (to_can_run, |
0d06e24b | 749 | return_zero); |
2bc416ba DJ |
750 | de_fault (to_notice_signals, |
751 | (void (*) (ptid_t)) | |
0d06e24b | 752 | target_ignore); |
2bc416ba DJ |
753 | de_fault (to_extra_thread_info, |
754 | (char *(*) (struct thread_info *)) | |
0d06e24b | 755 | return_zero); |
2bc416ba | 756 | de_fault (to_stop, |
94cc34af | 757 | (void (*) (ptid_t)) |
0d06e24b | 758 | target_ignore); |
cf7a04e8 | 759 | current_target.to_xfer_partial = current_xfer_partial; |
2bc416ba DJ |
760 | de_fault (to_rcmd, |
761 | (void (*) (char *, struct ui_file *)) | |
0d06e24b | 762 | tcomplain); |
2bc416ba DJ |
763 | de_fault (to_pid_to_exec_file, |
764 | (char *(*) (int)) | |
0d06e24b | 765 | return_zero); |
2bc416ba DJ |
766 | de_fault (to_async, |
767 | (void (*) (void (*) (enum inferior_event_type, void*), void*)) | |
0d06e24b | 768 | tcomplain); |
b84876c2 PA |
769 | de_fault (to_async_mask, |
770 | (int (*) (int)) | |
771 | return_one); | |
424163ea | 772 | current_target.to_read_description = NULL; |
0ef643c8 JB |
773 | de_fault (to_get_ada_task_ptid, |
774 | (ptid_t (*) (long, long)) | |
775 | default_get_ada_task_ptid); | |
8a305172 PA |
776 | de_fault (to_supports_multi_process, |
777 | (int (*) (void)) | |
778 | return_zero); | |
c906108c | 779 | #undef de_fault |
c906108c | 780 | |
7998dfc3 AC |
781 | /* Finally, position the target-stack beneath the squashed |
782 | "current_target". That way code looking for a non-inherited | |
783 | target method can quickly and simply find it. */ | |
784 | current_target.beneath = target_stack; | |
b4b61fdb DJ |
785 | |
786 | if (targetdebug) | |
787 | setup_target_debug (); | |
c906108c SS |
788 | } |
789 | ||
790 | /* Push a new target type into the stack of the existing target accessors, | |
791 | possibly superseding some of the existing accessors. | |
792 | ||
793 | Result is zero if the pushed target ended up on top of the stack, | |
794 | nonzero if at least one target is on top of it. | |
795 | ||
796 | Rather than allow an empty stack, we always have the dummy target at | |
797 | the bottom stratum, so we can call the function vectors without | |
798 | checking them. */ | |
799 | ||
800 | int | |
fba45db2 | 801 | push_target (struct target_ops *t) |
c906108c | 802 | { |
258b763a | 803 | struct target_ops **cur; |
c906108c SS |
804 | |
805 | /* Check magic number. If wrong, it probably means someone changed | |
806 | the struct definition, but not all the places that initialize one. */ | |
807 | if (t->to_magic != OPS_MAGIC) | |
808 | { | |
c5aa993b JM |
809 | fprintf_unfiltered (gdb_stderr, |
810 | "Magic number of %s target struct wrong\n", | |
811 | t->to_shortname); | |
e2e0b3e5 | 812 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
c906108c SS |
813 | } |
814 | ||
258b763a AC |
815 | /* Find the proper stratum to install this target in. */ |
816 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
c906108c | 817 | { |
258b763a | 818 | if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum) |
c906108c SS |
819 | break; |
820 | } | |
821 | ||
258b763a | 822 | /* If there's already targets at this stratum, remove them. */ |
88c231eb | 823 | /* FIXME: cagney/2003-10-15: I think this should be popping all |
258b763a AC |
824 | targets to CUR, and not just those at this stratum level. */ |
825 | while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum) | |
826 | { | |
827 | /* There's already something at this stratum level. Close it, | |
828 | and un-hook it from the stack. */ | |
829 | struct target_ops *tmp = (*cur); | |
830 | (*cur) = (*cur)->beneath; | |
831 | tmp->beneath = NULL; | |
f1c07ab0 | 832 | target_close (tmp, 0); |
258b763a | 833 | } |
c906108c SS |
834 | |
835 | /* We have removed all targets in our stratum, now add the new one. */ | |
258b763a AC |
836 | t->beneath = (*cur); |
837 | (*cur) = t; | |
c906108c SS |
838 | |
839 | update_current_target (); | |
840 | ||
258b763a AC |
841 | /* Not on top? */ |
842 | return (t != target_stack); | |
c906108c SS |
843 | } |
844 | ||
2bc416ba | 845 | /* Remove a target_ops vector from the stack, wherever it may be. |
c906108c SS |
846 | Return how many times it was removed (0 or 1). */ |
847 | ||
848 | int | |
fba45db2 | 849 | unpush_target (struct target_ops *t) |
c906108c | 850 | { |
258b763a AC |
851 | struct target_ops **cur; |
852 | struct target_ops *tmp; | |
c906108c | 853 | |
c8d104ad PA |
854 | if (t->to_stratum == dummy_stratum) |
855 | internal_error (__FILE__, __LINE__, | |
856 | "Attempt to unpush the dummy target"); | |
857 | ||
c906108c SS |
858 | /* Look for the specified target. Note that we assume that a target |
859 | can only occur once in the target stack. */ | |
860 | ||
258b763a AC |
861 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) |
862 | { | |
863 | if ((*cur) == t) | |
864 | break; | |
865 | } | |
c906108c | 866 | |
258b763a | 867 | if ((*cur) == NULL) |
c906108c SS |
868 | return 0; /* Didn't find target_ops, quit now */ |
869 | ||
5269965e AC |
870 | /* NOTE: cagney/2003-12-06: In '94 the close call was made |
871 | unconditional by moving it to before the above check that the | |
872 | target was in the target stack (something about "Change the way | |
873 | pushing and popping of targets work to support target overlays | |
874 | and inheritance"). This doesn't make much sense - only open | |
875 | targets should be closed. */ | |
876 | target_close (t, 0); | |
877 | ||
c906108c | 878 | /* Unchain the target */ |
258b763a AC |
879 | tmp = (*cur); |
880 | (*cur) = (*cur)->beneath; | |
881 | tmp->beneath = NULL; | |
c906108c SS |
882 | |
883 | update_current_target (); | |
c906108c SS |
884 | |
885 | return 1; | |
886 | } | |
887 | ||
888 | void | |
fba45db2 | 889 | pop_target (void) |
c906108c | 890 | { |
b52323fa | 891 | target_close (target_stack, 0); /* Let it clean up */ |
258b763a | 892 | if (unpush_target (target_stack) == 1) |
c906108c SS |
893 | return; |
894 | ||
c5aa993b JM |
895 | fprintf_unfiltered (gdb_stderr, |
896 | "pop_target couldn't find target %s\n", | |
897 | current_target.to_shortname); | |
e2e0b3e5 | 898 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
c906108c SS |
899 | } |
900 | ||
aa76d38d | 901 | void |
87ab71f0 | 902 | pop_all_targets_above (enum strata above_stratum, int quitting) |
aa76d38d | 903 | { |
87ab71f0 | 904 | while ((int) (current_target.to_stratum) > (int) above_stratum) |
aa76d38d | 905 | { |
b52323fa | 906 | target_close (target_stack, quitting); |
aa76d38d PA |
907 | if (!unpush_target (target_stack)) |
908 | { | |
909 | fprintf_unfiltered (gdb_stderr, | |
910 | "pop_all_targets couldn't find target %s\n", | |
b52323fa | 911 | target_stack->to_shortname); |
aa76d38d PA |
912 | internal_error (__FILE__, __LINE__, |
913 | _("failed internal consistency check")); | |
914 | break; | |
915 | } | |
916 | } | |
917 | } | |
918 | ||
87ab71f0 PA |
919 | void |
920 | pop_all_targets (int quitting) | |
921 | { | |
922 | pop_all_targets_above (dummy_stratum, quitting); | |
923 | } | |
924 | ||
72f5cf0e | 925 | /* Using the objfile specified in OBJFILE, find the address for the |
9e35dae4 DJ |
926 | current thread's thread-local storage with offset OFFSET. */ |
927 | CORE_ADDR | |
928 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) | |
929 | { | |
930 | volatile CORE_ADDR addr = 0; | |
117de6a9 PA |
931 | struct target_ops *target; |
932 | ||
933 | for (target = current_target.beneath; | |
934 | target != NULL; | |
935 | target = target->beneath) | |
936 | { | |
937 | if (target->to_get_thread_local_address != NULL) | |
938 | break; | |
939 | } | |
9e35dae4 | 940 | |
117de6a9 | 941 | if (target != NULL |
1cf3db46 | 942 | && gdbarch_fetch_tls_load_module_address_p (target_gdbarch)) |
9e35dae4 DJ |
943 | { |
944 | ptid_t ptid = inferior_ptid; | |
945 | volatile struct gdb_exception ex; | |
946 | ||
947 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
948 | { | |
949 | CORE_ADDR lm_addr; | |
950 | ||
951 | /* Fetch the load module address for this objfile. */ | |
1cf3db46 | 952 | lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch, |
9e35dae4 DJ |
953 | objfile); |
954 | /* If it's 0, throw the appropriate exception. */ | |
955 | if (lm_addr == 0) | |
956 | throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR, | |
957 | _("TLS load module not found")); | |
958 | ||
117de6a9 | 959 | addr = target->to_get_thread_local_address (target, ptid, lm_addr, offset); |
9e35dae4 DJ |
960 | } |
961 | /* If an error occurred, print TLS related messages here. Otherwise, | |
962 | throw the error to some higher catcher. */ | |
963 | if (ex.reason < 0) | |
964 | { | |
965 | int objfile_is_library = (objfile->flags & OBJF_SHARED); | |
966 | ||
967 | switch (ex.error) | |
968 | { | |
969 | case TLS_NO_LIBRARY_SUPPORT_ERROR: | |
970 | error (_("Cannot find thread-local variables in this thread library.")); | |
971 | break; | |
972 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: | |
973 | if (objfile_is_library) | |
974 | error (_("Cannot find shared library `%s' in dynamic" | |
975 | " linker's load module list"), objfile->name); | |
976 | else | |
977 | error (_("Cannot find executable file `%s' in dynamic" | |
978 | " linker's load module list"), objfile->name); | |
979 | break; | |
980 | case TLS_NOT_ALLOCATED_YET_ERROR: | |
981 | if (objfile_is_library) | |
982 | error (_("The inferior has not yet allocated storage for" | |
983 | " thread-local variables in\n" | |
984 | "the shared library `%s'\n" | |
985 | "for %s"), | |
986 | objfile->name, target_pid_to_str (ptid)); | |
987 | else | |
988 | error (_("The inferior has not yet allocated storage for" | |
989 | " thread-local variables in\n" | |
990 | "the executable `%s'\n" | |
991 | "for %s"), | |
992 | objfile->name, target_pid_to_str (ptid)); | |
993 | break; | |
994 | case TLS_GENERIC_ERROR: | |
995 | if (objfile_is_library) | |
996 | error (_("Cannot find thread-local storage for %s, " | |
997 | "shared library %s:\n%s"), | |
998 | target_pid_to_str (ptid), | |
999 | objfile->name, ex.message); | |
1000 | else | |
1001 | error (_("Cannot find thread-local storage for %s, " | |
1002 | "executable file %s:\n%s"), | |
1003 | target_pid_to_str (ptid), | |
1004 | objfile->name, ex.message); | |
1005 | break; | |
1006 | default: | |
1007 | throw_exception (ex); | |
1008 | break; | |
1009 | } | |
1010 | } | |
1011 | } | |
1012 | /* It wouldn't be wrong here to try a gdbarch method, too; finding | |
1013 | TLS is an ABI-specific thing. But we don't do that yet. */ | |
1014 | else | |
1015 | error (_("Cannot find thread-local variables on this target")); | |
1016 | ||
1017 | return addr; | |
1018 | } | |
1019 | ||
c906108c SS |
1020 | #undef MIN |
1021 | #define MIN(A, B) (((A) <= (B)) ? (A) : (B)) | |
1022 | ||
1023 | /* target_read_string -- read a null terminated string, up to LEN bytes, | |
1024 | from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful. | |
1025 | Set *STRING to a pointer to malloc'd memory containing the data; the caller | |
1026 | is responsible for freeing it. Return the number of bytes successfully | |
1027 | read. */ | |
1028 | ||
1029 | int | |
fba45db2 | 1030 | target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop) |
c906108c SS |
1031 | { |
1032 | int tlen, origlen, offset, i; | |
1b0ba102 | 1033 | gdb_byte buf[4]; |
c906108c SS |
1034 | int errcode = 0; |
1035 | char *buffer; | |
1036 | int buffer_allocated; | |
1037 | char *bufptr; | |
1038 | unsigned int nbytes_read = 0; | |
1039 | ||
6217bf3e MS |
1040 | gdb_assert (string); |
1041 | ||
c906108c SS |
1042 | /* Small for testing. */ |
1043 | buffer_allocated = 4; | |
1044 | buffer = xmalloc (buffer_allocated); | |
1045 | bufptr = buffer; | |
1046 | ||
1047 | origlen = len; | |
1048 | ||
1049 | while (len > 0) | |
1050 | { | |
1051 | tlen = MIN (len, 4 - (memaddr & 3)); | |
1052 | offset = memaddr & 3; | |
1053 | ||
1b0ba102 | 1054 | errcode = target_read_memory (memaddr & ~3, buf, sizeof buf); |
c906108c SS |
1055 | if (errcode != 0) |
1056 | { | |
1057 | /* The transfer request might have crossed the boundary to an | |
1058 | unallocated region of memory. Retry the transfer, requesting | |
1059 | a single byte. */ | |
1060 | tlen = 1; | |
1061 | offset = 0; | |
b8eb5af0 | 1062 | errcode = target_read_memory (memaddr, buf, 1); |
c906108c SS |
1063 | if (errcode != 0) |
1064 | goto done; | |
1065 | } | |
1066 | ||
1067 | if (bufptr - buffer + tlen > buffer_allocated) | |
1068 | { | |
1069 | unsigned int bytes; | |
1070 | bytes = bufptr - buffer; | |
1071 | buffer_allocated *= 2; | |
1072 | buffer = xrealloc (buffer, buffer_allocated); | |
1073 | bufptr = buffer + bytes; | |
1074 | } | |
1075 | ||
1076 | for (i = 0; i < tlen; i++) | |
1077 | { | |
1078 | *bufptr++ = buf[i + offset]; | |
1079 | if (buf[i + offset] == '\000') | |
1080 | { | |
1081 | nbytes_read += i + 1; | |
1082 | goto done; | |
1083 | } | |
1084 | } | |
1085 | ||
1086 | memaddr += tlen; | |
1087 | len -= tlen; | |
1088 | nbytes_read += tlen; | |
1089 | } | |
c5aa993b | 1090 | done: |
6217bf3e | 1091 | *string = buffer; |
c906108c SS |
1092 | if (errnop != NULL) |
1093 | *errnop = errcode; | |
c906108c SS |
1094 | return nbytes_read; |
1095 | } | |
1096 | ||
07b82ea5 PA |
1097 | struct target_section_table * |
1098 | target_get_section_table (struct target_ops *target) | |
1099 | { | |
1100 | struct target_ops *t; | |
1101 | ||
1102 | if (targetdebug) | |
1103 | fprintf_unfiltered (gdb_stdlog, "target_get_section_table ()\n"); | |
1104 | ||
1105 | for (t = target; t != NULL; t = t->beneath) | |
1106 | if (t->to_get_section_table != NULL) | |
1107 | return (*t->to_get_section_table) (t); | |
1108 | ||
1109 | return NULL; | |
1110 | } | |
1111 | ||
8db32d44 | 1112 | /* Find a section containing ADDR. */ |
07b82ea5 | 1113 | |
0542c86d | 1114 | struct target_section * |
8db32d44 AC |
1115 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
1116 | { | |
07b82ea5 | 1117 | struct target_section_table *table = target_get_section_table (target); |
0542c86d | 1118 | struct target_section *secp; |
07b82ea5 PA |
1119 | |
1120 | if (table == NULL) | |
1121 | return NULL; | |
1122 | ||
1123 | for (secp = table->sections; secp < table->sections_end; secp++) | |
8db32d44 AC |
1124 | { |
1125 | if (addr >= secp->addr && addr < secp->endaddr) | |
1126 | return secp; | |
1127 | } | |
1128 | return NULL; | |
1129 | } | |
1130 | ||
cf7a04e8 DJ |
1131 | /* Perform a partial memory transfer. The arguments and return |
1132 | value are just as for target_xfer_partial. */ | |
1133 | ||
1134 | static LONGEST | |
1135 | memory_xfer_partial (struct target_ops *ops, void *readbuf, const void *writebuf, | |
1136 | ULONGEST memaddr, LONGEST len) | |
0779438d | 1137 | { |
cf7a04e8 DJ |
1138 | LONGEST res; |
1139 | int reg_len; | |
1140 | struct mem_region *region; | |
1141 | ||
1142 | /* Zero length requests are ok and require no work. */ | |
1143 | if (len == 0) | |
1144 | return 0; | |
1145 | ||
07b82ea5 PA |
1146 | /* For accesses to unmapped overlay sections, read directly from |
1147 | files. Must do this first, as MEMADDR may need adjustment. */ | |
1148 | if (readbuf != NULL && overlay_debugging) | |
1149 | { | |
1150 | struct obj_section *section = find_pc_overlay (memaddr); | |
1151 | if (pc_in_unmapped_range (memaddr, section)) | |
1152 | { | |
1153 | struct target_section_table *table | |
1154 | = target_get_section_table (ops); | |
1155 | const char *section_name = section->the_bfd_section->name; | |
1156 | memaddr = overlay_mapped_address (memaddr, section); | |
1157 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
1158 | memaddr, len, | |
1159 | table->sections, | |
1160 | table->sections_end, | |
1161 | section_name); | |
1162 | } | |
1163 | } | |
1164 | ||
1165 | /* Try the executable files, if "trust-readonly-sections" is set. */ | |
cf7a04e8 DJ |
1166 | if (readbuf != NULL && trust_readonly) |
1167 | { | |
0542c86d | 1168 | struct target_section *secp; |
07b82ea5 | 1169 | struct target_section_table *table; |
cf7a04e8 DJ |
1170 | |
1171 | secp = target_section_by_addr (ops, memaddr); | |
1172 | if (secp != NULL | |
1173 | && (bfd_get_section_flags (secp->bfd, secp->the_bfd_section) | |
1174 | & SEC_READONLY)) | |
07b82ea5 PA |
1175 | { |
1176 | table = target_get_section_table (ops); | |
1177 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
1178 | memaddr, len, | |
1179 | table->sections, | |
1180 | table->sections_end, | |
1181 | NULL); | |
1182 | } | |
98646950 UW |
1183 | } |
1184 | ||
cf7a04e8 DJ |
1185 | /* Try GDB's internal data cache. */ |
1186 | region = lookup_mem_region (memaddr); | |
4b5752d0 VP |
1187 | /* region->hi == 0 means there's no upper bound. */ |
1188 | if (memaddr + len < region->hi || region->hi == 0) | |
cf7a04e8 DJ |
1189 | reg_len = len; |
1190 | else | |
1191 | reg_len = region->hi - memaddr; | |
1192 | ||
1193 | switch (region->attrib.mode) | |
1194 | { | |
1195 | case MEM_RO: | |
1196 | if (writebuf != NULL) | |
1197 | return -1; | |
1198 | break; | |
1199 | ||
1200 | case MEM_WO: | |
1201 | if (readbuf != NULL) | |
1202 | return -1; | |
1203 | break; | |
a76d924d DJ |
1204 | |
1205 | case MEM_FLASH: | |
1206 | /* We only support writing to flash during "load" for now. */ | |
1207 | if (writebuf != NULL) | |
1208 | error (_("Writing to flash memory forbidden in this context")); | |
1209 | break; | |
4b5752d0 VP |
1210 | |
1211 | case MEM_NONE: | |
1212 | return -1; | |
cf7a04e8 DJ |
1213 | } |
1214 | ||
1215 | if (region->attrib.cache) | |
1216 | { | |
1217 | /* FIXME drow/2006-08-09: This call discards OPS, so the raw | |
1218 | memory request will start back at current_target. */ | |
1219 | if (readbuf != NULL) | |
1220 | res = dcache_xfer_memory (target_dcache, memaddr, readbuf, | |
1221 | reg_len, 0); | |
1222 | else | |
1223 | /* FIXME drow/2006-08-09: If we're going to preserve const | |
1224 | correctness dcache_xfer_memory should take readbuf and | |
1225 | writebuf. */ | |
1226 | res = dcache_xfer_memory (target_dcache, memaddr, | |
1227 | (void *) writebuf, | |
1228 | reg_len, 1); | |
1229 | if (res <= 0) | |
1230 | return -1; | |
1231 | else | |
8defab1a DJ |
1232 | { |
1233 | if (readbuf && !show_memory_breakpoints) | |
1234 | breakpoint_restore_shadows (readbuf, memaddr, reg_len); | |
1235 | return res; | |
1236 | } | |
cf7a04e8 DJ |
1237 | } |
1238 | ||
1239 | /* If none of those methods found the memory we wanted, fall back | |
1240 | to a target partial transfer. Normally a single call to | |
1241 | to_xfer_partial is enough; if it doesn't recognize an object | |
1242 | it will call the to_xfer_partial of the next target down. | |
1243 | But for memory this won't do. Memory is the only target | |
1244 | object which can be read from more than one valid target. | |
1245 | A core file, for instance, could have some of memory but | |
1246 | delegate other bits to the target below it. So, we must | |
1247 | manually try all targets. */ | |
1248 | ||
1249 | do | |
1250 | { | |
1251 | res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
4b5752d0 | 1252 | readbuf, writebuf, memaddr, reg_len); |
cf7a04e8 | 1253 | if (res > 0) |
8defab1a | 1254 | break; |
cf7a04e8 | 1255 | |
5ad3a4ca DJ |
1256 | /* We want to continue past core files to executables, but not |
1257 | past a running target's memory. */ | |
c35b1492 | 1258 | if (ops->to_has_all_memory (ops)) |
8defab1a | 1259 | break; |
5ad3a4ca | 1260 | |
cf7a04e8 DJ |
1261 | ops = ops->beneath; |
1262 | } | |
1263 | while (ops != NULL); | |
1264 | ||
8defab1a DJ |
1265 | if (readbuf && !show_memory_breakpoints) |
1266 | breakpoint_restore_shadows (readbuf, memaddr, reg_len); | |
1267 | ||
cf7a04e8 DJ |
1268 | /* If we still haven't got anything, return the last error. We |
1269 | give up. */ | |
1270 | return res; | |
0779438d AC |
1271 | } |
1272 | ||
8defab1a DJ |
1273 | static void |
1274 | restore_show_memory_breakpoints (void *arg) | |
1275 | { | |
1276 | show_memory_breakpoints = (uintptr_t) arg; | |
1277 | } | |
1278 | ||
1279 | struct cleanup * | |
1280 | make_show_memory_breakpoints_cleanup (int show) | |
1281 | { | |
1282 | int current = show_memory_breakpoints; | |
1283 | show_memory_breakpoints = show; | |
1284 | ||
1285 | return make_cleanup (restore_show_memory_breakpoints, | |
1286 | (void *) (uintptr_t) current); | |
1287 | } | |
1288 | ||
27394598 AC |
1289 | static LONGEST |
1290 | target_xfer_partial (struct target_ops *ops, | |
1291 | enum target_object object, const char *annex, | |
1292 | void *readbuf, const void *writebuf, | |
1293 | ULONGEST offset, LONGEST len) | |
1294 | { | |
1295 | LONGEST retval; | |
1296 | ||
1297 | gdb_assert (ops->to_xfer_partial != NULL); | |
cf7a04e8 DJ |
1298 | |
1299 | /* If this is a memory transfer, let the memory-specific code | |
1300 | have a look at it instead. Memory transfers are more | |
1301 | complicated. */ | |
1302 | if (object == TARGET_OBJECT_MEMORY) | |
1303 | retval = memory_xfer_partial (ops, readbuf, writebuf, offset, len); | |
1304 | else | |
1305 | { | |
1306 | enum target_object raw_object = object; | |
1307 | ||
1308 | /* If this is a raw memory transfer, request the normal | |
1309 | memory object from other layers. */ | |
1310 | if (raw_object == TARGET_OBJECT_RAW_MEMORY) | |
1311 | raw_object = TARGET_OBJECT_MEMORY; | |
1312 | ||
1313 | retval = ops->to_xfer_partial (ops, raw_object, annex, readbuf, | |
1314 | writebuf, offset, len); | |
1315 | } | |
1316 | ||
27394598 AC |
1317 | if (targetdebug) |
1318 | { | |
1319 | const unsigned char *myaddr = NULL; | |
1320 | ||
1321 | fprintf_unfiltered (gdb_stdlog, | |
53b71562 | 1322 | "%s:target_xfer_partial (%d, %s, %s, %s, %s, %s) = %s", |
27394598 AC |
1323 | ops->to_shortname, |
1324 | (int) object, | |
1325 | (annex ? annex : "(null)"), | |
53b71562 JB |
1326 | host_address_to_string (readbuf), |
1327 | host_address_to_string (writebuf), | |
0b1553bc UW |
1328 | core_addr_to_string_nz (offset), |
1329 | plongest (len), plongest (retval)); | |
27394598 AC |
1330 | |
1331 | if (readbuf) | |
1332 | myaddr = readbuf; | |
1333 | if (writebuf) | |
1334 | myaddr = writebuf; | |
1335 | if (retval > 0 && myaddr != NULL) | |
1336 | { | |
1337 | int i; | |
2bc416ba | 1338 | |
27394598 AC |
1339 | fputs_unfiltered (", bytes =", gdb_stdlog); |
1340 | for (i = 0; i < retval; i++) | |
1341 | { | |
53b71562 | 1342 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1343 | { |
1344 | if (targetdebug < 2 && i > 0) | |
1345 | { | |
1346 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
1347 | break; | |
1348 | } | |
1349 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1350 | } | |
2bc416ba | 1351 | |
27394598 AC |
1352 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
1353 | } | |
1354 | } | |
2bc416ba | 1355 | |
27394598 AC |
1356 | fputc_unfiltered ('\n', gdb_stdlog); |
1357 | } | |
1358 | return retval; | |
1359 | } | |
1360 | ||
c906108c SS |
1361 | /* Read LEN bytes of target memory at address MEMADDR, placing the results in |
1362 | GDB's memory at MYADDR. Returns either 0 for success or an errno value | |
1363 | if any error occurs. | |
1364 | ||
1365 | If an error occurs, no guarantee is made about the contents of the data at | |
1366 | MYADDR. In particular, the caller should not depend upon partial reads | |
1367 | filling the buffer with good data. There is no way for the caller to know | |
1368 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 DJ |
1369 | deal with partial reads should call target_read (which will retry until |
1370 | it makes no progress, and then return how much was transferred). */ | |
c906108c SS |
1371 | |
1372 | int | |
fc1a4b47 | 1373 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 1374 | { |
c35b1492 PA |
1375 | /* Dispatch to the topmost target, not the flattened current_target. |
1376 | Memory accesses check target->to_has_(all_)memory, and the | |
1377 | flattened target doesn't inherit those. */ | |
1378 | if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1379 | myaddr, memaddr, len) == len) |
1380 | return 0; | |
0779438d | 1381 | else |
cf7a04e8 | 1382 | return EIO; |
c906108c SS |
1383 | } |
1384 | ||
c906108c | 1385 | int |
fc1a4b47 | 1386 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) |
c906108c | 1387 | { |
c35b1492 PA |
1388 | /* Dispatch to the topmost target, not the flattened current_target. |
1389 | Memory accesses check target->to_has_(all_)memory, and the | |
1390 | flattened target doesn't inherit those. */ | |
1391 | if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, | |
cf7a04e8 DJ |
1392 | myaddr, memaddr, len) == len) |
1393 | return 0; | |
0779438d | 1394 | else |
cf7a04e8 | 1395 | return EIO; |
c906108c | 1396 | } |
c5aa993b | 1397 | |
fd79ecee DJ |
1398 | /* Fetch the target's memory map. */ |
1399 | ||
1400 | VEC(mem_region_s) * | |
1401 | target_memory_map (void) | |
1402 | { | |
1403 | VEC(mem_region_s) *result; | |
1404 | struct mem_region *last_one, *this_one; | |
1405 | int ix; | |
1406 | struct target_ops *t; | |
1407 | ||
1408 | if (targetdebug) | |
1409 | fprintf_unfiltered (gdb_stdlog, "target_memory_map ()\n"); | |
1410 | ||
1411 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1412 | if (t->to_memory_map != NULL) | |
1413 | break; | |
1414 | ||
1415 | if (t == NULL) | |
1416 | return NULL; | |
1417 | ||
1418 | result = t->to_memory_map (t); | |
1419 | if (result == NULL) | |
1420 | return NULL; | |
1421 | ||
1422 | qsort (VEC_address (mem_region_s, result), | |
1423 | VEC_length (mem_region_s, result), | |
1424 | sizeof (struct mem_region), mem_region_cmp); | |
1425 | ||
1426 | /* Check that regions do not overlap. Simultaneously assign | |
1427 | a numbering for the "mem" commands to use to refer to | |
1428 | each region. */ | |
1429 | last_one = NULL; | |
1430 | for (ix = 0; VEC_iterate (mem_region_s, result, ix, this_one); ix++) | |
1431 | { | |
1432 | this_one->number = ix; | |
1433 | ||
1434 | if (last_one && last_one->hi > this_one->lo) | |
1435 | { | |
1436 | warning (_("Overlapping regions in memory map: ignoring")); | |
1437 | VEC_free (mem_region_s, result); | |
1438 | return NULL; | |
1439 | } | |
1440 | last_one = this_one; | |
1441 | } | |
1442 | ||
1443 | return result; | |
1444 | } | |
1445 | ||
a76d924d DJ |
1446 | void |
1447 | target_flash_erase (ULONGEST address, LONGEST length) | |
1448 | { | |
1449 | struct target_ops *t; | |
1450 | ||
1451 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1452 | if (t->to_flash_erase != NULL) | |
1453 | { | |
1454 | if (targetdebug) | |
1455 | fprintf_unfiltered (gdb_stdlog, "target_flash_erase (%s, %s)\n", | |
1456 | paddr (address), phex (length, 0)); | |
8944021f DJ |
1457 | t->to_flash_erase (t, address, length); |
1458 | return; | |
a76d924d DJ |
1459 | } |
1460 | ||
1461 | tcomplain (); | |
1462 | } | |
1463 | ||
1464 | void | |
1465 | target_flash_done (void) | |
1466 | { | |
1467 | struct target_ops *t; | |
1468 | ||
1469 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1470 | if (t->to_flash_done != NULL) | |
1471 | { | |
1472 | if (targetdebug) | |
1473 | fprintf_unfiltered (gdb_stdlog, "target_flash_done\n"); | |
8944021f DJ |
1474 | t->to_flash_done (t); |
1475 | return; | |
a76d924d DJ |
1476 | } |
1477 | ||
1478 | tcomplain (); | |
1479 | } | |
1480 | ||
920d2a44 AC |
1481 | static void |
1482 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1483 | struct cmd_list_element *c, const char *value) | |
1484 | { | |
1485 | fprintf_filtered (file, _("\ | |
1486 | Mode for reading from readonly sections is %s.\n"), | |
1487 | value); | |
1488 | } | |
3a11626d | 1489 | |
1e3ff5ad AC |
1490 | /* More generic transfers. */ |
1491 | ||
0088c768 | 1492 | static LONGEST |
8aa91c1e | 1493 | default_xfer_partial (struct target_ops *ops, enum target_object object, |
2bc416ba | 1494 | const char *annex, gdb_byte *readbuf, |
1b0ba102 | 1495 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) |
0088c768 AC |
1496 | { |
1497 | if (object == TARGET_OBJECT_MEMORY | |
c8e73a31 AC |
1498 | && ops->deprecated_xfer_memory != NULL) |
1499 | /* If available, fall back to the target's | |
1500 | "deprecated_xfer_memory" method. */ | |
0088c768 | 1501 | { |
4b8a223f | 1502 | int xfered = -1; |
0088c768 | 1503 | errno = 0; |
4b8a223f AC |
1504 | if (writebuf != NULL) |
1505 | { | |
1506 | void *buffer = xmalloc (len); | |
1507 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |
1508 | memcpy (buffer, writebuf, len); | |
c8e73a31 AC |
1509 | xfered = ops->deprecated_xfer_memory (offset, buffer, len, |
1510 | 1/*write*/, NULL, ops); | |
4b8a223f AC |
1511 | do_cleanups (cleanup); |
1512 | } | |
1513 | if (readbuf != NULL) | |
244e85c8 MS |
1514 | xfered = ops->deprecated_xfer_memory (offset, readbuf, len, |
1515 | 0/*read*/, NULL, ops); | |
0088c768 AC |
1516 | if (xfered > 0) |
1517 | return xfered; | |
1518 | else if (xfered == 0 && errno == 0) | |
c8e73a31 AC |
1519 | /* "deprecated_xfer_memory" uses 0, cross checked against |
1520 | ERRNO as one indication of an error. */ | |
0088c768 AC |
1521 | return 0; |
1522 | else | |
1523 | return -1; | |
1524 | } | |
1525 | else if (ops->beneath != NULL) | |
cf7a04e8 DJ |
1526 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, |
1527 | readbuf, writebuf, offset, len); | |
1528 | else | |
1529 | return -1; | |
1530 | } | |
1531 | ||
1532 | /* The xfer_partial handler for the topmost target. Unlike the default, | |
1533 | it does not need to handle memory specially; it just passes all | |
1534 | requests down the stack. */ | |
1535 | ||
1536 | static LONGEST | |
1537 | current_xfer_partial (struct target_ops *ops, enum target_object object, | |
1538 | const char *annex, gdb_byte *readbuf, | |
1539 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1540 | { | |
1541 | if (ops->beneath != NULL) | |
1542 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, | |
1543 | readbuf, writebuf, offset, len); | |
0088c768 AC |
1544 | else |
1545 | return -1; | |
1546 | } | |
1547 | ||
1548 | /* Target vector read/write partial wrapper functions. | |
1549 | ||
1550 | NOTE: cagney/2003-10-21: I wonder if having "to_xfer_partial | |
1551 | (inbuf, outbuf)", instead of separate read/write methods, make life | |
1552 | easier. */ | |
1553 | ||
13547ab6 | 1554 | static LONGEST |
1e3ff5ad AC |
1555 | target_read_partial (struct target_ops *ops, |
1556 | enum target_object object, | |
1b0ba102 | 1557 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1558 | ULONGEST offset, LONGEST len) |
1559 | { | |
27394598 | 1560 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len); |
1e3ff5ad AC |
1561 | } |
1562 | ||
13547ab6 | 1563 | static LONGEST |
1e3ff5ad AC |
1564 | target_write_partial (struct target_ops *ops, |
1565 | enum target_object object, | |
1b0ba102 | 1566 | const char *annex, const gdb_byte *buf, |
1e3ff5ad AC |
1567 | ULONGEST offset, LONGEST len) |
1568 | { | |
27394598 | 1569 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len); |
1e3ff5ad AC |
1570 | } |
1571 | ||
1572 | /* Wrappers to perform the full transfer. */ | |
1573 | LONGEST | |
1574 | target_read (struct target_ops *ops, | |
1575 | enum target_object object, | |
1b0ba102 | 1576 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1577 | ULONGEST offset, LONGEST len) |
1578 | { | |
1579 | LONGEST xfered = 0; | |
1580 | while (xfered < len) | |
1581 | { | |
0088c768 | 1582 | LONGEST xfer = target_read_partial (ops, object, annex, |
fc1a4b47 | 1583 | (gdb_byte *) buf + xfered, |
0088c768 | 1584 | offset + xfered, len - xfered); |
1e3ff5ad | 1585 | /* Call an observer, notifying them of the xfer progress? */ |
13547ab6 DJ |
1586 | if (xfer == 0) |
1587 | return xfered; | |
1588 | if (xfer < 0) | |
0088c768 | 1589 | return -1; |
1e3ff5ad AC |
1590 | xfered += xfer; |
1591 | QUIT; | |
1592 | } | |
1593 | return len; | |
1594 | } | |
1595 | ||
d5086790 VP |
1596 | LONGEST |
1597 | target_read_until_error (struct target_ops *ops, | |
1598 | enum target_object object, | |
1599 | const char *annex, gdb_byte *buf, | |
1600 | ULONGEST offset, LONGEST len) | |
1601 | { | |
1602 | LONGEST xfered = 0; | |
1603 | while (xfered < len) | |
1604 | { | |
1605 | LONGEST xfer = target_read_partial (ops, object, annex, | |
1606 | (gdb_byte *) buf + xfered, | |
1607 | offset + xfered, len - xfered); | |
1608 | /* Call an observer, notifying them of the xfer progress? */ | |
1609 | if (xfer == 0) | |
1610 | return xfered; | |
1611 | if (xfer < 0) | |
1612 | { | |
1613 | /* We've got an error. Try to read in smaller blocks. */ | |
1614 | ULONGEST start = offset + xfered; | |
1615 | ULONGEST remaining = len - xfered; | |
1616 | ULONGEST half; | |
1617 | ||
1618 | /* If an attempt was made to read a random memory address, | |
1619 | it's likely that the very first byte is not accessible. | |
1620 | Try reading the first byte, to avoid doing log N tries | |
1621 | below. */ | |
1622 | xfer = target_read_partial (ops, object, annex, | |
1623 | (gdb_byte *) buf + xfered, start, 1); | |
1624 | if (xfer <= 0) | |
1625 | return xfered; | |
1626 | start += 1; | |
1627 | remaining -= 1; | |
1628 | half = remaining/2; | |
1629 | ||
1630 | while (half > 0) | |
1631 | { | |
1632 | xfer = target_read_partial (ops, object, annex, | |
1633 | (gdb_byte *) buf + xfered, | |
1634 | start, half); | |
1635 | if (xfer == 0) | |
1636 | return xfered; | |
1637 | if (xfer < 0) | |
1638 | { | |
1639 | remaining = half; | |
1640 | } | |
1641 | else | |
1642 | { | |
1643 | /* We have successfully read the first half. So, the | |
1644 | error must be in the second half. Adjust start and | |
1645 | remaining to point at the second half. */ | |
1646 | xfered += xfer; | |
1647 | start += xfer; | |
1648 | remaining -= xfer; | |
1649 | } | |
1650 | half = remaining/2; | |
1651 | } | |
1652 | ||
1653 | return xfered; | |
1654 | } | |
1655 | xfered += xfer; | |
1656 | QUIT; | |
1657 | } | |
1658 | return len; | |
1659 | } | |
1660 | ||
1661 | ||
cf7a04e8 DJ |
1662 | /* An alternative to target_write with progress callbacks. */ |
1663 | ||
1e3ff5ad | 1664 | LONGEST |
cf7a04e8 DJ |
1665 | target_write_with_progress (struct target_ops *ops, |
1666 | enum target_object object, | |
1667 | const char *annex, const gdb_byte *buf, | |
1668 | ULONGEST offset, LONGEST len, | |
1669 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad AC |
1670 | { |
1671 | LONGEST xfered = 0; | |
a76d924d DJ |
1672 | |
1673 | /* Give the progress callback a chance to set up. */ | |
1674 | if (progress) | |
1675 | (*progress) (0, baton); | |
1676 | ||
1e3ff5ad AC |
1677 | while (xfered < len) |
1678 | { | |
1679 | LONGEST xfer = target_write_partial (ops, object, annex, | |
fc1a4b47 | 1680 | (gdb_byte *) buf + xfered, |
1e3ff5ad | 1681 | offset + xfered, len - xfered); |
cf7a04e8 | 1682 | |
13547ab6 DJ |
1683 | if (xfer == 0) |
1684 | return xfered; | |
1685 | if (xfer < 0) | |
0088c768 | 1686 | return -1; |
cf7a04e8 DJ |
1687 | |
1688 | if (progress) | |
1689 | (*progress) (xfer, baton); | |
1690 | ||
1e3ff5ad AC |
1691 | xfered += xfer; |
1692 | QUIT; | |
1693 | } | |
1694 | return len; | |
1695 | } | |
1696 | ||
cf7a04e8 DJ |
1697 | LONGEST |
1698 | target_write (struct target_ops *ops, | |
1699 | enum target_object object, | |
1700 | const char *annex, const gdb_byte *buf, | |
1701 | ULONGEST offset, LONGEST len) | |
1702 | { | |
1703 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
1704 | NULL, NULL); | |
1705 | } | |
1706 | ||
159f81f3 DJ |
1707 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
1708 | the size of the transferred data. PADDING additional bytes are | |
1709 | available in *BUF_P. This is a helper function for | |
1710 | target_read_alloc; see the declaration of that function for more | |
1711 | information. */ | |
13547ab6 | 1712 | |
159f81f3 DJ |
1713 | static LONGEST |
1714 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, | |
1715 | const char *annex, gdb_byte **buf_p, int padding) | |
13547ab6 DJ |
1716 | { |
1717 | size_t buf_alloc, buf_pos; | |
1718 | gdb_byte *buf; | |
1719 | LONGEST n; | |
1720 | ||
1721 | /* This function does not have a length parameter; it reads the | |
1722 | entire OBJECT). Also, it doesn't support objects fetched partly | |
1723 | from one target and partly from another (in a different stratum, | |
1724 | e.g. a core file and an executable). Both reasons make it | |
1725 | unsuitable for reading memory. */ | |
1726 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
1727 | ||
1728 | /* Start by reading up to 4K at a time. The target will throttle | |
1729 | this number down if necessary. */ | |
1730 | buf_alloc = 4096; | |
1731 | buf = xmalloc (buf_alloc); | |
1732 | buf_pos = 0; | |
1733 | while (1) | |
1734 | { | |
1735 | n = target_read_partial (ops, object, annex, &buf[buf_pos], | |
159f81f3 | 1736 | buf_pos, buf_alloc - buf_pos - padding); |
13547ab6 DJ |
1737 | if (n < 0) |
1738 | { | |
1739 | /* An error occurred. */ | |
1740 | xfree (buf); | |
1741 | return -1; | |
1742 | } | |
1743 | else if (n == 0) | |
1744 | { | |
1745 | /* Read all there was. */ | |
1746 | if (buf_pos == 0) | |
1747 | xfree (buf); | |
1748 | else | |
1749 | *buf_p = buf; | |
1750 | return buf_pos; | |
1751 | } | |
1752 | ||
1753 | buf_pos += n; | |
1754 | ||
1755 | /* If the buffer is filling up, expand it. */ | |
1756 | if (buf_alloc < buf_pos * 2) | |
1757 | { | |
1758 | buf_alloc *= 2; | |
1759 | buf = xrealloc (buf, buf_alloc); | |
1760 | } | |
1761 | ||
1762 | QUIT; | |
1763 | } | |
1764 | } | |
1765 | ||
159f81f3 DJ |
1766 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
1767 | the size of the transferred data. See the declaration in "target.h" | |
1768 | function for more information about the return value. */ | |
1769 | ||
1770 | LONGEST | |
1771 | target_read_alloc (struct target_ops *ops, enum target_object object, | |
1772 | const char *annex, gdb_byte **buf_p) | |
1773 | { | |
1774 | return target_read_alloc_1 (ops, object, annex, buf_p, 0); | |
1775 | } | |
1776 | ||
1777 | /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and | |
1778 | returned as a string, allocated using xmalloc. If an error occurs | |
1779 | or the transfer is unsupported, NULL is returned. Empty objects | |
1780 | are returned as allocated but empty strings. A warning is issued | |
1781 | if the result contains any embedded NUL bytes. */ | |
1782 | ||
1783 | char * | |
1784 | target_read_stralloc (struct target_ops *ops, enum target_object object, | |
1785 | const char *annex) | |
1786 | { | |
1787 | gdb_byte *buffer; | |
1788 | LONGEST transferred; | |
1789 | ||
1790 | transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1); | |
1791 | ||
1792 | if (transferred < 0) | |
1793 | return NULL; | |
1794 | ||
1795 | if (transferred == 0) | |
1796 | return xstrdup (""); | |
1797 | ||
1798 | buffer[transferred] = 0; | |
1799 | if (strlen (buffer) < transferred) | |
1800 | warning (_("target object %d, annex %s, " | |
1801 | "contained unexpected null characters"), | |
1802 | (int) object, annex ? annex : "(none)"); | |
1803 | ||
1804 | return (char *) buffer; | |
1805 | } | |
1806 | ||
b6591e8b AC |
1807 | /* Memory transfer methods. */ |
1808 | ||
1809 | void | |
1b0ba102 | 1810 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
1811 | LONGEST len) |
1812 | { | |
07b82ea5 PA |
1813 | /* This method is used to read from an alternate, non-current |
1814 | target. This read must bypass the overlay support (as symbols | |
1815 | don't match this target), and GDB's internal cache (wrong cache | |
1816 | for this target). */ | |
1817 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) | |
b6591e8b AC |
1818 | != len) |
1819 | memory_error (EIO, addr); | |
1820 | } | |
1821 | ||
1822 | ULONGEST | |
1823 | get_target_memory_unsigned (struct target_ops *ops, | |
1824 | CORE_ADDR addr, int len) | |
1825 | { | |
f6519ebc | 1826 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
1827 | |
1828 | gdb_assert (len <= sizeof (buf)); | |
1829 | get_target_memory (ops, addr, buf, len); | |
1830 | return extract_unsigned_integer (buf, len); | |
1831 | } | |
1832 | ||
c906108c | 1833 | static void |
fba45db2 | 1834 | target_info (char *args, int from_tty) |
c906108c SS |
1835 | { |
1836 | struct target_ops *t; | |
c906108c | 1837 | int has_all_mem = 0; |
c5aa993b | 1838 | |
c906108c | 1839 | if (symfile_objfile != NULL) |
a3f17187 | 1840 | printf_unfiltered (_("Symbols from \"%s\".\n"), symfile_objfile->name); |
c906108c | 1841 | |
258b763a | 1842 | for (t = target_stack; t != NULL; t = t->beneath) |
c906108c | 1843 | { |
c35b1492 | 1844 | if (!(*t->to_has_memory) (t)) |
c906108c SS |
1845 | continue; |
1846 | ||
c5aa993b | 1847 | if ((int) (t->to_stratum) <= (int) dummy_stratum) |
c906108c SS |
1848 | continue; |
1849 | if (has_all_mem) | |
a3f17187 | 1850 | printf_unfiltered (_("\tWhile running this, GDB does not access memory from...\n")); |
c5aa993b JM |
1851 | printf_unfiltered ("%s:\n", t->to_longname); |
1852 | (t->to_files_info) (t); | |
c35b1492 | 1853 | has_all_mem = (*t->to_has_all_memory) (t); |
c906108c SS |
1854 | } |
1855 | } | |
1856 | ||
fd79ecee DJ |
1857 | /* This function is called before any new inferior is created, e.g. |
1858 | by running a program, attaching, or connecting to a target. | |
1859 | It cleans up any state from previous invocations which might | |
1860 | change between runs. This is a subset of what target_preopen | |
1861 | resets (things which might change between targets). */ | |
1862 | ||
1863 | void | |
1864 | target_pre_inferior (int from_tty) | |
1865 | { | |
b9db4ced UW |
1866 | /* Clear out solib state. Otherwise the solib state of the previous |
1867 | inferior might have survived and is entirely wrong for the new | |
1868 | target. This has been observed on GNU/Linux using glibc 2.3. How | |
1869 | to reproduce: | |
1870 | ||
1871 | bash$ ./foo& | |
1872 | [1] 4711 | |
1873 | bash$ ./foo& | |
1874 | [1] 4712 | |
1875 | bash$ gdb ./foo | |
1876 | [...] | |
1877 | (gdb) attach 4711 | |
1878 | (gdb) detach | |
1879 | (gdb) attach 4712 | |
1880 | Cannot access memory at address 0xdeadbeef | |
1881 | */ | |
b9db4ced | 1882 | |
50c71eaf PA |
1883 | /* In some OSs, the shared library list is the same/global/shared |
1884 | across inferiors. If code is shared between processes, so are | |
1885 | memory regions and features. */ | |
1886 | if (!gdbarch_has_global_solist (target_gdbarch)) | |
1887 | { | |
1888 | no_shared_libraries (NULL, from_tty); | |
1889 | ||
1890 | invalidate_target_mem_regions (); | |
424163ea | 1891 | |
50c71eaf PA |
1892 | target_clear_description (); |
1893 | } | |
fd79ecee DJ |
1894 | } |
1895 | ||
c906108c SS |
1896 | /* This is to be called by the open routine before it does |
1897 | anything. */ | |
1898 | ||
1899 | void | |
fba45db2 | 1900 | target_preopen (int from_tty) |
c906108c | 1901 | { |
c5aa993b | 1902 | dont_repeat (); |
c906108c SS |
1903 | |
1904 | if (target_has_execution) | |
c5aa993b | 1905 | { |
adf40b2e | 1906 | if (!from_tty |
e2e0b3e5 | 1907 | || query (_("A program is being debugged already. Kill it? "))) |
c5aa993b | 1908 | target_kill (); |
c906108c | 1909 | else |
8a3fe4f8 | 1910 | error (_("Program not killed.")); |
c906108c SS |
1911 | } |
1912 | ||
1913 | /* Calling target_kill may remove the target from the stack. But if | |
1914 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
1915 | /* Leave the exec target, though. The user may be switching from a |
1916 | live process to a core of the same program. */ | |
1917 | pop_all_targets_above (file_stratum, 0); | |
fd79ecee DJ |
1918 | |
1919 | target_pre_inferior (from_tty); | |
c906108c SS |
1920 | } |
1921 | ||
1922 | /* Detach a target after doing deferred register stores. */ | |
1923 | ||
1924 | void | |
fba45db2 | 1925 | target_detach (char *args, int from_tty) |
c906108c | 1926 | { |
136d6dae VP |
1927 | struct target_ops* t; |
1928 | ||
2567c7d9 | 1929 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
1930 | /* Don't remove global breakpoints here. They're removed on |
1931 | disconnection from the target. */ | |
1932 | ; | |
1933 | else | |
1934 | /* If we're in breakpoints-always-inserted mode, have to remove | |
1935 | them before detaching. */ | |
1936 | remove_breakpoints (); | |
74960c60 | 1937 | |
136d6dae VP |
1938 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
1939 | { | |
1940 | if (t->to_detach != NULL) | |
1941 | { | |
1942 | t->to_detach (t, args, from_tty); | |
947b8855 PA |
1943 | if (targetdebug) |
1944 | fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n", | |
1945 | args, from_tty); | |
136d6dae VP |
1946 | return; |
1947 | } | |
1948 | } | |
1949 | ||
1950 | internal_error (__FILE__, __LINE__, "could not find a target to detach"); | |
c906108c SS |
1951 | } |
1952 | ||
6ad8ae5c DJ |
1953 | void |
1954 | target_disconnect (char *args, int from_tty) | |
1955 | { | |
597320e7 DJ |
1956 | struct target_ops *t; |
1957 | ||
50c71eaf PA |
1958 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
1959 | are global across processes, we have to remove them before | |
1960 | disconnecting. */ | |
74960c60 VP |
1961 | remove_breakpoints (); |
1962 | ||
597320e7 DJ |
1963 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
1964 | if (t->to_disconnect != NULL) | |
1965 | { | |
1966 | if (targetdebug) | |
1967 | fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n", | |
1968 | args, from_tty); | |
1969 | t->to_disconnect (t, args, from_tty); | |
1970 | return; | |
1971 | } | |
1972 | ||
1973 | tcomplain (); | |
6ad8ae5c DJ |
1974 | } |
1975 | ||
117de6a9 | 1976 | ptid_t |
47608cb1 | 1977 | target_wait (ptid_t ptid, struct target_waitstatus *status, int options) |
117de6a9 PA |
1978 | { |
1979 | struct target_ops *t; | |
1980 | ||
1981 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1982 | { | |
1983 | if (t->to_wait != NULL) | |
1984 | { | |
47608cb1 | 1985 | ptid_t retval = (*t->to_wait) (t, ptid, status, options); |
117de6a9 PA |
1986 | |
1987 | if (targetdebug) | |
1988 | { | |
1989 | char *status_string; | |
1990 | ||
1991 | status_string = target_waitstatus_to_string (status); | |
1992 | fprintf_unfiltered (gdb_stdlog, | |
1993 | "target_wait (%d, status) = %d, %s\n", | |
1994 | PIDGET (ptid), PIDGET (retval), | |
1995 | status_string); | |
1996 | xfree (status_string); | |
1997 | } | |
1998 | ||
1999 | return retval; | |
2000 | } | |
2001 | } | |
2002 | ||
2003 | noprocess (); | |
2004 | } | |
2005 | ||
2006 | char * | |
2007 | target_pid_to_str (ptid_t ptid) | |
2008 | { | |
2009 | struct target_ops *t; | |
2010 | ||
2011 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2012 | { | |
2013 | if (t->to_pid_to_str != NULL) | |
2014 | return (*t->to_pid_to_str) (t, ptid); | |
2015 | } | |
2016 | ||
2017 | return normal_pid_to_str (ptid); | |
2018 | } | |
2019 | ||
e1ac3328 VP |
2020 | void |
2021 | target_resume (ptid_t ptid, int step, enum target_signal signal) | |
2022 | { | |
28439f5e PA |
2023 | struct target_ops *t; |
2024 | ||
e1ac3328 | 2025 | dcache_invalidate (target_dcache); |
28439f5e PA |
2026 | |
2027 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2028 | { | |
2029 | if (t->to_resume != NULL) | |
2030 | { | |
2031 | t->to_resume (t, ptid, step, signal); | |
2032 | if (targetdebug) | |
2033 | fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n", | |
2034 | PIDGET (ptid), | |
2035 | step ? "step" : "continue", | |
2036 | target_signal_to_name (signal)); | |
2037 | ||
2038 | set_executing (ptid, 1); | |
2039 | set_running (ptid, 1); | |
2040 | return; | |
2041 | } | |
2042 | } | |
2043 | ||
2044 | noprocess (); | |
e1ac3328 | 2045 | } |
ee057212 DJ |
2046 | /* Look through the list of possible targets for a target that can |
2047 | follow forks. */ | |
2048 | ||
2049 | int | |
2050 | target_follow_fork (int follow_child) | |
2051 | { | |
2052 | struct target_ops *t; | |
2053 | ||
2054 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2055 | { | |
2056 | if (t->to_follow_fork != NULL) | |
2057 | { | |
2058 | int retval = t->to_follow_fork (t, follow_child); | |
2059 | if (targetdebug) | |
2060 | fprintf_unfiltered (gdb_stdlog, "target_follow_fork (%d) = %d\n", | |
2061 | follow_child, retval); | |
2062 | return retval; | |
2063 | } | |
2064 | } | |
2065 | ||
2066 | /* Some target returned a fork event, but did not know how to follow it. */ | |
2067 | internal_error (__FILE__, __LINE__, | |
2068 | "could not find a target to follow fork"); | |
2069 | } | |
2070 | ||
136d6dae VP |
2071 | void |
2072 | target_mourn_inferior (void) | |
2073 | { | |
2074 | struct target_ops *t; | |
2075 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2076 | { | |
2077 | if (t->to_mourn_inferior != NULL) | |
2078 | { | |
2079 | t->to_mourn_inferior (t); | |
947b8855 PA |
2080 | if (targetdebug) |
2081 | fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n"); | |
efbd6e75 JB |
2082 | |
2083 | /* We no longer need to keep handles on any of the object files. | |
2084 | Make sure to release them to avoid unnecessarily locking any | |
2085 | of them while we're not actually debugging. */ | |
2086 | bfd_cache_close_all (); | |
2087 | ||
136d6dae VP |
2088 | return; |
2089 | } | |
2090 | } | |
2091 | ||
2092 | internal_error (__FILE__, __LINE__, | |
2093 | "could not find a target to follow mourn inferiour"); | |
2094 | } | |
2095 | ||
424163ea DJ |
2096 | /* Look for a target which can describe architectural features, starting |
2097 | from TARGET. If we find one, return its description. */ | |
2098 | ||
2099 | const struct target_desc * | |
2100 | target_read_description (struct target_ops *target) | |
2101 | { | |
2102 | struct target_ops *t; | |
2103 | ||
2104 | for (t = target; t != NULL; t = t->beneath) | |
2105 | if (t->to_read_description != NULL) | |
2106 | { | |
2107 | const struct target_desc *tdesc; | |
2108 | ||
2109 | tdesc = t->to_read_description (t); | |
2110 | if (tdesc) | |
2111 | return tdesc; | |
2112 | } | |
2113 | ||
2114 | return NULL; | |
2115 | } | |
2116 | ||
08388c79 DE |
2117 | /* The default implementation of to_search_memory. |
2118 | This implements a basic search of memory, reading target memory and | |
2119 | performing the search here (as opposed to performing the search in on the | |
2120 | target side with, for example, gdbserver). */ | |
2121 | ||
2122 | int | |
2123 | simple_search_memory (struct target_ops *ops, | |
2124 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2125 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2126 | CORE_ADDR *found_addrp) | |
2127 | { | |
2128 | /* NOTE: also defined in find.c testcase. */ | |
2129 | #define SEARCH_CHUNK_SIZE 16000 | |
2130 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
2131 | /* Buffer to hold memory contents for searching. */ | |
2132 | gdb_byte *search_buf; | |
2133 | unsigned search_buf_size; | |
2134 | struct cleanup *old_cleanups; | |
2135 | ||
2136 | search_buf_size = chunk_size + pattern_len - 1; | |
2137 | ||
2138 | /* No point in trying to allocate a buffer larger than the search space. */ | |
2139 | if (search_space_len < search_buf_size) | |
2140 | search_buf_size = search_space_len; | |
2141 | ||
2142 | search_buf = malloc (search_buf_size); | |
2143 | if (search_buf == NULL) | |
5e1471f5 | 2144 | error (_("Unable to allocate memory to perform the search.")); |
08388c79 DE |
2145 | old_cleanups = make_cleanup (free_current_contents, &search_buf); |
2146 | ||
2147 | /* Prime the search buffer. */ | |
2148 | ||
2149 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2150 | search_buf, start_addr, search_buf_size) != search_buf_size) | |
2151 | { | |
5e1471f5 | 2152 | warning (_("Unable to access target memory at %s, halting search."), |
08388c79 DE |
2153 | hex_string (start_addr)); |
2154 | do_cleanups (old_cleanups); | |
2155 | return -1; | |
2156 | } | |
2157 | ||
2158 | /* Perform the search. | |
2159 | ||
2160 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
2161 | When we've scanned N bytes we copy the trailing bytes to the start and | |
2162 | read in another N bytes. */ | |
2163 | ||
2164 | while (search_space_len >= pattern_len) | |
2165 | { | |
2166 | gdb_byte *found_ptr; | |
2167 | unsigned nr_search_bytes = min (search_space_len, search_buf_size); | |
2168 | ||
2169 | found_ptr = memmem (search_buf, nr_search_bytes, | |
2170 | pattern, pattern_len); | |
2171 | ||
2172 | if (found_ptr != NULL) | |
2173 | { | |
2174 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
2175 | *found_addrp = found_addr; | |
2176 | do_cleanups (old_cleanups); | |
2177 | return 1; | |
2178 | } | |
2179 | ||
2180 | /* Not found in this chunk, skip to next chunk. */ | |
2181 | ||
2182 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
2183 | if (search_space_len >= chunk_size) | |
2184 | search_space_len -= chunk_size; | |
2185 | else | |
2186 | search_space_len = 0; | |
2187 | ||
2188 | if (search_space_len >= pattern_len) | |
2189 | { | |
2190 | unsigned keep_len = search_buf_size - chunk_size; | |
2191 | CORE_ADDR read_addr = start_addr + keep_len; | |
2192 | int nr_to_read; | |
2193 | ||
2194 | /* Copy the trailing part of the previous iteration to the front | |
2195 | of the buffer for the next iteration. */ | |
2196 | gdb_assert (keep_len == pattern_len - 1); | |
2197 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
2198 | ||
2199 | nr_to_read = min (search_space_len - keep_len, chunk_size); | |
2200 | ||
2201 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2202 | search_buf + keep_len, read_addr, | |
2203 | nr_to_read) != nr_to_read) | |
2204 | { | |
5e1471f5 | 2205 | warning (_("Unable to access target memory at %s, halting search."), |
08388c79 DE |
2206 | hex_string (read_addr)); |
2207 | do_cleanups (old_cleanups); | |
2208 | return -1; | |
2209 | } | |
2210 | ||
2211 | start_addr += chunk_size; | |
2212 | } | |
2213 | } | |
2214 | ||
2215 | /* Not found. */ | |
2216 | ||
2217 | do_cleanups (old_cleanups); | |
2218 | return 0; | |
2219 | } | |
2220 | ||
2221 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the | |
2222 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2223 | ||
2224 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2225 | requiring halting of the search (e.g. memory read error). | |
2226 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2227 | ||
2228 | int | |
2229 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2230 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2231 | CORE_ADDR *found_addrp) | |
2232 | { | |
2233 | struct target_ops *t; | |
2234 | int found; | |
2235 | ||
2236 | /* We don't use INHERIT to set current_target.to_search_memory, | |
2237 | so we have to scan the target stack and handle targetdebug | |
2238 | ourselves. */ | |
2239 | ||
2240 | if (targetdebug) | |
2241 | fprintf_unfiltered (gdb_stdlog, "target_search_memory (%s, ...)\n", | |
2242 | hex_string (start_addr)); | |
2243 | ||
2244 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2245 | if (t->to_search_memory != NULL) | |
2246 | break; | |
2247 | ||
2248 | if (t != NULL) | |
2249 | { | |
2250 | found = t->to_search_memory (t, start_addr, search_space_len, | |
2251 | pattern, pattern_len, found_addrp); | |
2252 | } | |
2253 | else | |
2254 | { | |
2255 | /* If a special version of to_search_memory isn't available, use the | |
2256 | simple version. */ | |
c35b1492 | 2257 | found = simple_search_memory (current_target.beneath, |
08388c79 DE |
2258 | start_addr, search_space_len, |
2259 | pattern, pattern_len, found_addrp); | |
2260 | } | |
2261 | ||
2262 | if (targetdebug) | |
2263 | fprintf_unfiltered (gdb_stdlog, " = %d\n", found); | |
2264 | ||
2265 | return found; | |
2266 | } | |
2267 | ||
8edfe269 DJ |
2268 | /* Look through the currently pushed targets. If none of them will |
2269 | be able to restart the currently running process, issue an error | |
2270 | message. */ | |
2271 | ||
2272 | void | |
2273 | target_require_runnable (void) | |
2274 | { | |
2275 | struct target_ops *t; | |
2276 | ||
2277 | for (t = target_stack; t != NULL; t = t->beneath) | |
2278 | { | |
2279 | /* If this target knows how to create a new program, then | |
2280 | assume we will still be able to after killing the current | |
2281 | one. Either killing and mourning will not pop T, or else | |
2282 | find_default_run_target will find it again. */ | |
2283 | if (t->to_create_inferior != NULL) | |
2284 | return; | |
2285 | ||
2286 | /* Do not worry about thread_stratum targets that can not | |
2287 | create inferiors. Assume they will be pushed again if | |
2288 | necessary, and continue to the process_stratum. */ | |
2289 | if (t->to_stratum == thread_stratum) | |
2290 | continue; | |
2291 | ||
2292 | error (_("\ | |
2293 | The \"%s\" target does not support \"run\". Try \"help target\" or \"continue\"."), | |
2294 | t->to_shortname); | |
2295 | } | |
2296 | ||
2297 | /* This function is only called if the target is running. In that | |
2298 | case there should have been a process_stratum target and it | |
2299 | should either know how to create inferiors, or not... */ | |
2300 | internal_error (__FILE__, __LINE__, "No targets found"); | |
2301 | } | |
2302 | ||
c906108c SS |
2303 | /* Look through the list of possible targets for a target that can |
2304 | execute a run or attach command without any other data. This is | |
2305 | used to locate the default process stratum. | |
2306 | ||
5f667f2d PA |
2307 | If DO_MESG is not NULL, the result is always valid (error() is |
2308 | called for errors); else, return NULL on error. */ | |
c906108c SS |
2309 | |
2310 | static struct target_ops * | |
fba45db2 | 2311 | find_default_run_target (char *do_mesg) |
c906108c SS |
2312 | { |
2313 | struct target_ops **t; | |
2314 | struct target_ops *runable = NULL; | |
2315 | int count; | |
2316 | ||
2317 | count = 0; | |
2318 | ||
2319 | for (t = target_structs; t < target_structs + target_struct_size; | |
2320 | ++t) | |
2321 | { | |
c5aa993b | 2322 | if ((*t)->to_can_run && target_can_run (*t)) |
c906108c SS |
2323 | { |
2324 | runable = *t; | |
2325 | ++count; | |
2326 | } | |
2327 | } | |
2328 | ||
2329 | if (count != 1) | |
5f667f2d PA |
2330 | { |
2331 | if (do_mesg) | |
2332 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
2333 | else | |
2334 | return NULL; | |
2335 | } | |
c906108c SS |
2336 | |
2337 | return runable; | |
2338 | } | |
2339 | ||
2340 | void | |
136d6dae | 2341 | find_default_attach (struct target_ops *ops, char *args, int from_tty) |
c906108c SS |
2342 | { |
2343 | struct target_ops *t; | |
2344 | ||
c5aa993b | 2345 | t = find_default_run_target ("attach"); |
136d6dae | 2346 | (t->to_attach) (t, args, from_tty); |
c906108c SS |
2347 | return; |
2348 | } | |
2349 | ||
c906108c | 2350 | void |
136d6dae VP |
2351 | find_default_create_inferior (struct target_ops *ops, |
2352 | char *exec_file, char *allargs, char **env, | |
c27cda74 | 2353 | int from_tty) |
c906108c SS |
2354 | { |
2355 | struct target_ops *t; | |
2356 | ||
c5aa993b | 2357 | t = find_default_run_target ("run"); |
136d6dae | 2358 | (t->to_create_inferior) (t, exec_file, allargs, env, from_tty); |
c906108c SS |
2359 | return; |
2360 | } | |
2361 | ||
2c0b251b | 2362 | static int |
b84876c2 PA |
2363 | find_default_can_async_p (void) |
2364 | { | |
2365 | struct target_ops *t; | |
2366 | ||
5f667f2d PA |
2367 | /* This may be called before the target is pushed on the stack; |
2368 | look for the default process stratum. If there's none, gdb isn't | |
2369 | configured with a native debugger, and target remote isn't | |
2370 | connected yet. */ | |
2371 | t = find_default_run_target (NULL); | |
2372 | if (t && t->to_can_async_p) | |
b84876c2 PA |
2373 | return (t->to_can_async_p) (); |
2374 | return 0; | |
2375 | } | |
2376 | ||
2c0b251b | 2377 | static int |
b84876c2 PA |
2378 | find_default_is_async_p (void) |
2379 | { | |
2380 | struct target_ops *t; | |
2381 | ||
5f667f2d PA |
2382 | /* This may be called before the target is pushed on the stack; |
2383 | look for the default process stratum. If there's none, gdb isn't | |
2384 | configured with a native debugger, and target remote isn't | |
2385 | connected yet. */ | |
2386 | t = find_default_run_target (NULL); | |
2387 | if (t && t->to_is_async_p) | |
b84876c2 PA |
2388 | return (t->to_is_async_p) (); |
2389 | return 0; | |
2390 | } | |
2391 | ||
2c0b251b | 2392 | static int |
9908b566 VP |
2393 | find_default_supports_non_stop (void) |
2394 | { | |
2395 | struct target_ops *t; | |
2396 | ||
2397 | t = find_default_run_target (NULL); | |
2398 | if (t && t->to_supports_non_stop) | |
2399 | return (t->to_supports_non_stop) (); | |
2400 | return 0; | |
2401 | } | |
2402 | ||
2403 | int | |
2c0b251b | 2404 | target_supports_non_stop (void) |
9908b566 VP |
2405 | { |
2406 | struct target_ops *t; | |
2407 | for (t = ¤t_target; t != NULL; t = t->beneath) | |
2408 | if (t->to_supports_non_stop) | |
2409 | return t->to_supports_non_stop (); | |
2410 | ||
2411 | return 0; | |
2412 | } | |
2413 | ||
2414 | ||
07e059b5 VP |
2415 | char * |
2416 | target_get_osdata (const char *type) | |
2417 | { | |
2418 | char *document; | |
2419 | struct target_ops *t; | |
2420 | ||
739ef7fb PA |
2421 | /* If we're already connected to something that can get us OS |
2422 | related data, use it. Otherwise, try using the native | |
2423 | target. */ | |
2424 | if (current_target.to_stratum >= process_stratum) | |
6d097e65 | 2425 | t = current_target.beneath; |
739ef7fb PA |
2426 | else |
2427 | t = find_default_run_target ("get OS data"); | |
07e059b5 VP |
2428 | |
2429 | if (!t) | |
2430 | return NULL; | |
2431 | ||
6d097e65 | 2432 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
2433 | } |
2434 | ||
e0d24f8d WZ |
2435 | static int |
2436 | default_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
2437 | { | |
ffe5a37e | 2438 | return (len <= gdbarch_ptr_bit (target_gdbarch) / TARGET_CHAR_BIT); |
ccaa32c7 GS |
2439 | } |
2440 | ||
5009afc5 AS |
2441 | static int |
2442 | default_watchpoint_addr_within_range (struct target_ops *target, | |
2443 | CORE_ADDR addr, | |
2444 | CORE_ADDR start, int length) | |
2445 | { | |
2446 | return addr >= start && addr < start + length; | |
2447 | } | |
2448 | ||
c906108c | 2449 | static int |
fba45db2 | 2450 | return_zero (void) |
c906108c SS |
2451 | { |
2452 | return 0; | |
2453 | } | |
2454 | ||
2455 | static int | |
fba45db2 | 2456 | return_one (void) |
c906108c SS |
2457 | { |
2458 | return 1; | |
2459 | } | |
2460 | ||
ccaa32c7 GS |
2461 | static int |
2462 | return_minus_one (void) | |
2463 | { | |
2464 | return -1; | |
2465 | } | |
2466 | ||
7a292a7a SS |
2467 | /* Find a single runnable target in the stack and return it. If for |
2468 | some reason there is more than one, return NULL. */ | |
2469 | ||
2470 | struct target_ops * | |
fba45db2 | 2471 | find_run_target (void) |
7a292a7a SS |
2472 | { |
2473 | struct target_ops **t; | |
2474 | struct target_ops *runable = NULL; | |
2475 | int count; | |
c5aa993b | 2476 | |
7a292a7a | 2477 | count = 0; |
c5aa993b | 2478 | |
7a292a7a SS |
2479 | for (t = target_structs; t < target_structs + target_struct_size; ++t) |
2480 | { | |
c5aa993b | 2481 | if ((*t)->to_can_run && target_can_run (*t)) |
7a292a7a SS |
2482 | { |
2483 | runable = *t; | |
2484 | ++count; | |
2485 | } | |
2486 | } | |
c5aa993b | 2487 | |
7a292a7a SS |
2488 | return (count == 1 ? runable : NULL); |
2489 | } | |
2490 | ||
ed9a39eb JM |
2491 | /* Find a single core_stratum target in the list of targets and return it. |
2492 | If for some reason there is more than one, return NULL. */ | |
2493 | ||
c906108c | 2494 | struct target_ops * |
fba45db2 | 2495 | find_core_target (void) |
c906108c SS |
2496 | { |
2497 | struct target_ops **t; | |
2498 | struct target_ops *runable = NULL; | |
2499 | int count; | |
c5aa993b | 2500 | |
c906108c | 2501 | count = 0; |
c5aa993b | 2502 | |
c906108c SS |
2503 | for (t = target_structs; t < target_structs + target_struct_size; |
2504 | ++t) | |
2505 | { | |
2506 | if ((*t)->to_stratum == core_stratum) | |
2507 | { | |
2508 | runable = *t; | |
2509 | ++count; | |
2510 | } | |
2511 | } | |
c5aa993b JM |
2512 | |
2513 | return (count == 1 ? runable : NULL); | |
c906108c | 2514 | } |
ed9a39eb JM |
2515 | |
2516 | /* | |
2517 | * Find the next target down the stack from the specified target. | |
2518 | */ | |
2519 | ||
2520 | struct target_ops * | |
fba45db2 | 2521 | find_target_beneath (struct target_ops *t) |
ed9a39eb | 2522 | { |
258b763a | 2523 | return t->beneath; |
ed9a39eb JM |
2524 | } |
2525 | ||
c906108c SS |
2526 | \f |
2527 | /* The inferior process has died. Long live the inferior! */ | |
2528 | ||
2529 | void | |
fba45db2 | 2530 | generic_mourn_inferior (void) |
c906108c | 2531 | { |
7f9f62ba | 2532 | ptid_t ptid; |
c906108c | 2533 | |
7f9f62ba | 2534 | ptid = inferior_ptid; |
39f77062 | 2535 | inferior_ptid = null_ptid; |
7f9f62ba PA |
2536 | |
2537 | if (!ptid_equal (ptid, null_ptid)) | |
2538 | { | |
2539 | int pid = ptid_get_pid (ptid); | |
2540 | delete_inferior (pid); | |
2541 | } | |
2542 | ||
c906108c SS |
2543 | breakpoint_init_inferior (inf_exited); |
2544 | registers_changed (); | |
2545 | ||
c906108c SS |
2546 | reopen_exec_file (); |
2547 | reinit_frame_cache (); | |
2548 | ||
9a4105ab AC |
2549 | if (deprecated_detach_hook) |
2550 | deprecated_detach_hook (); | |
c906108c SS |
2551 | } |
2552 | \f | |
8807d78b | 2553 | /* Helper function for child_wait and the derivatives of child_wait. |
c906108c SS |
2554 | HOSTSTATUS is the waitstatus from wait() or the equivalent; store our |
2555 | translation of that in OURSTATUS. */ | |
2556 | void | |
fba45db2 | 2557 | store_waitstatus (struct target_waitstatus *ourstatus, int hoststatus) |
c906108c | 2558 | { |
c906108c SS |
2559 | if (WIFEXITED (hoststatus)) |
2560 | { | |
2561 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
2562 | ourstatus->value.integer = WEXITSTATUS (hoststatus); | |
2563 | } | |
2564 | else if (!WIFSTOPPED (hoststatus)) | |
2565 | { | |
2566 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
2567 | ourstatus->value.sig = target_signal_from_host (WTERMSIG (hoststatus)); | |
2568 | } | |
2569 | else | |
2570 | { | |
2571 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
2572 | ourstatus->value.sig = target_signal_from_host (WSTOPSIG (hoststatus)); | |
2573 | } | |
2574 | } | |
2575 | \f | |
fd0a2a6f MK |
2576 | /* Convert a normal process ID to a string. Returns the string in a |
2577 | static buffer. */ | |
c906108c SS |
2578 | |
2579 | char * | |
39f77062 | 2580 | normal_pid_to_str (ptid_t ptid) |
c906108c | 2581 | { |
fd0a2a6f | 2582 | static char buf[32]; |
c906108c | 2583 | |
5fff8fc0 | 2584 | xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid)); |
c906108c SS |
2585 | return buf; |
2586 | } | |
2587 | ||
2c0b251b | 2588 | static char * |
117de6a9 PA |
2589 | dummy_pid_to_str (struct target_ops *ops, ptid_t ptid) |
2590 | { | |
2591 | return normal_pid_to_str (ptid); | |
2592 | } | |
2593 | ||
be4d1333 | 2594 | /* Error-catcher for target_find_memory_regions */ |
be4d1333 MS |
2595 | static int dummy_find_memory_regions (int (*ignore1) (), void *ignore2) |
2596 | { | |
8a3fe4f8 | 2597 | error (_("No target.")); |
be4d1333 MS |
2598 | return 0; |
2599 | } | |
2600 | ||
2601 | /* Error-catcher for target_make_corefile_notes */ | |
be4d1333 MS |
2602 | static char * dummy_make_corefile_notes (bfd *ignore1, int *ignore2) |
2603 | { | |
8a3fe4f8 | 2604 | error (_("No target.")); |
be4d1333 MS |
2605 | return NULL; |
2606 | } | |
2607 | ||
c906108c SS |
2608 | /* Set up the handful of non-empty slots needed by the dummy target |
2609 | vector. */ | |
2610 | ||
2611 | static void | |
fba45db2 | 2612 | init_dummy_target (void) |
c906108c SS |
2613 | { |
2614 | dummy_target.to_shortname = "None"; | |
2615 | dummy_target.to_longname = "None"; | |
2616 | dummy_target.to_doc = ""; | |
2617 | dummy_target.to_attach = find_default_attach; | |
136d6dae VP |
2618 | dummy_target.to_detach = |
2619 | (void (*)(struct target_ops *, char *, int))target_ignore; | |
c906108c | 2620 | dummy_target.to_create_inferior = find_default_create_inferior; |
b84876c2 PA |
2621 | dummy_target.to_can_async_p = find_default_can_async_p; |
2622 | dummy_target.to_is_async_p = find_default_is_async_p; | |
9908b566 | 2623 | dummy_target.to_supports_non_stop = find_default_supports_non_stop; |
117de6a9 | 2624 | dummy_target.to_pid_to_str = dummy_pid_to_str; |
c906108c | 2625 | dummy_target.to_stratum = dummy_stratum; |
be4d1333 MS |
2626 | dummy_target.to_find_memory_regions = dummy_find_memory_regions; |
2627 | dummy_target.to_make_corefile_notes = dummy_make_corefile_notes; | |
0b603eba | 2628 | dummy_target.to_xfer_partial = default_xfer_partial; |
c35b1492 PA |
2629 | dummy_target.to_has_all_memory = (int (*) (struct target_ops *)) return_zero; |
2630 | dummy_target.to_has_memory = (int (*) (struct target_ops *)) return_zero; | |
2631 | dummy_target.to_has_stack = (int (*) (struct target_ops *)) return_zero; | |
2632 | dummy_target.to_has_registers = (int (*) (struct target_ops *)) return_zero; | |
2633 | dummy_target.to_has_execution = (int (*) (struct target_ops *)) return_zero; | |
c906108c SS |
2634 | dummy_target.to_magic = OPS_MAGIC; |
2635 | } | |
c906108c | 2636 | \f |
c906108c | 2637 | static void |
fba45db2 | 2638 | debug_to_open (char *args, int from_tty) |
c906108c SS |
2639 | { |
2640 | debug_target.to_open (args, from_tty); | |
2641 | ||
96baa820 | 2642 | fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty); |
c906108c SS |
2643 | } |
2644 | ||
f1c07ab0 AC |
2645 | void |
2646 | target_close (struct target_ops *targ, int quitting) | |
2647 | { | |
2648 | if (targ->to_xclose != NULL) | |
2649 | targ->to_xclose (targ, quitting); | |
2650 | else if (targ->to_close != NULL) | |
2651 | targ->to_close (quitting); | |
947b8855 PA |
2652 | |
2653 | if (targetdebug) | |
2654 | fprintf_unfiltered (gdb_stdlog, "target_close (%d)\n", quitting); | |
f1c07ab0 AC |
2655 | } |
2656 | ||
136d6dae VP |
2657 | void |
2658 | target_attach (char *args, int from_tty) | |
2659 | { | |
2660 | struct target_ops *t; | |
2661 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2662 | { | |
2663 | if (t->to_attach != NULL) | |
2664 | { | |
2665 | t->to_attach (t, args, from_tty); | |
947b8855 PA |
2666 | if (targetdebug) |
2667 | fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n", | |
2668 | args, from_tty); | |
136d6dae VP |
2669 | return; |
2670 | } | |
2671 | } | |
2672 | ||
2673 | internal_error (__FILE__, __LINE__, | |
2674 | "could not find a target to attach"); | |
2675 | } | |
2676 | ||
28439f5e PA |
2677 | int |
2678 | target_thread_alive (ptid_t ptid) | |
c906108c | 2679 | { |
28439f5e PA |
2680 | struct target_ops *t; |
2681 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2682 | { | |
2683 | if (t->to_thread_alive != NULL) | |
2684 | { | |
2685 | int retval; | |
c906108c | 2686 | |
28439f5e PA |
2687 | retval = t->to_thread_alive (t, ptid); |
2688 | if (targetdebug) | |
2689 | fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n", | |
2690 | PIDGET (ptid), retval); | |
2691 | ||
2692 | return retval; | |
2693 | } | |
2694 | } | |
2695 | ||
2696 | return 0; | |
2697 | } | |
2698 | ||
2699 | void | |
2700 | target_find_new_threads (void) | |
2701 | { | |
2702 | struct target_ops *t; | |
2703 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2704 | { | |
2705 | if (t->to_find_new_threads != NULL) | |
2706 | { | |
2707 | t->to_find_new_threads (t); | |
2708 | if (targetdebug) | |
2709 | fprintf_unfiltered (gdb_stdlog, "target_find_new_threads ()\n"); | |
2710 | ||
2711 | return; | |
2712 | } | |
2713 | } | |
c906108c SS |
2714 | } |
2715 | ||
c906108c | 2716 | static void |
28439f5e | 2717 | debug_to_post_attach (int pid) |
c906108c | 2718 | { |
28439f5e | 2719 | debug_target.to_post_attach (pid); |
c906108c | 2720 | |
28439f5e | 2721 | fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid); |
c906108c SS |
2722 | } |
2723 | ||
f00150c9 DE |
2724 | /* Return a pretty printed form of target_waitstatus. |
2725 | Space for the result is malloc'd, caller must free. */ | |
c906108c | 2726 | |
f00150c9 DE |
2727 | char * |
2728 | target_waitstatus_to_string (const struct target_waitstatus *ws) | |
2729 | { | |
2730 | const char *kind_str = "status->kind = "; | |
c906108c | 2731 | |
f00150c9 | 2732 | switch (ws->kind) |
c906108c SS |
2733 | { |
2734 | case TARGET_WAITKIND_EXITED: | |
f00150c9 DE |
2735 | return xstrprintf ("%sexited, status = %d", |
2736 | kind_str, ws->value.integer); | |
c906108c | 2737 | case TARGET_WAITKIND_STOPPED: |
f00150c9 DE |
2738 | return xstrprintf ("%sstopped, signal = %s", |
2739 | kind_str, target_signal_to_name (ws->value.sig)); | |
c906108c | 2740 | case TARGET_WAITKIND_SIGNALLED: |
f00150c9 DE |
2741 | return xstrprintf ("%ssignalled, signal = %s", |
2742 | kind_str, target_signal_to_name (ws->value.sig)); | |
c906108c | 2743 | case TARGET_WAITKIND_LOADED: |
f00150c9 | 2744 | return xstrprintf ("%sloaded", kind_str); |
c906108c | 2745 | case TARGET_WAITKIND_FORKED: |
f00150c9 | 2746 | return xstrprintf ("%sforked", kind_str); |
c906108c | 2747 | case TARGET_WAITKIND_VFORKED: |
f00150c9 | 2748 | return xstrprintf ("%svforked", kind_str); |
c906108c | 2749 | case TARGET_WAITKIND_EXECD: |
f00150c9 DE |
2750 | return xstrprintf ("%sexecd", kind_str); |
2751 | case TARGET_WAITKIND_SYSCALL_ENTRY: | |
2752 | return xstrprintf ("%ssyscall-entry", kind_str); | |
2753 | case TARGET_WAITKIND_SYSCALL_RETURN: | |
2754 | return xstrprintf ("%ssyscall-return", kind_str); | |
c906108c | 2755 | case TARGET_WAITKIND_SPURIOUS: |
f00150c9 DE |
2756 | return xstrprintf ("%sspurious", kind_str); |
2757 | case TARGET_WAITKIND_IGNORE: | |
2758 | return xstrprintf ("%signore", kind_str); | |
2759 | case TARGET_WAITKIND_NO_HISTORY: | |
2760 | return xstrprintf ("%sno-history", kind_str); | |
c906108c | 2761 | default: |
f00150c9 | 2762 | return xstrprintf ("%sunknown???", kind_str); |
c906108c | 2763 | } |
f00150c9 DE |
2764 | } |
2765 | ||
bf0c5130 | 2766 | static void |
56be3814 UW |
2767 | debug_print_register (const char * func, |
2768 | struct regcache *regcache, int regno) | |
bf0c5130 | 2769 | { |
f8d29908 | 2770 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
bf0c5130 | 2771 | fprintf_unfiltered (gdb_stdlog, "%s ", func); |
f8d29908 | 2772 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) |
f8d29908 UW |
2773 | && gdbarch_register_name (gdbarch, regno) != NULL |
2774 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') | |
2775 | fprintf_unfiltered (gdb_stdlog, "(%s)", | |
2776 | gdbarch_register_name (gdbarch, regno)); | |
bf0c5130 AC |
2777 | else |
2778 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
0ff58721 | 2779 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) |
bf0c5130 | 2780 | { |
f8d29908 | 2781 | int i, size = register_size (gdbarch, regno); |
d9d9c31f | 2782 | unsigned char buf[MAX_REGISTER_SIZE]; |
0ff58721 | 2783 | regcache_raw_collect (regcache, regno, buf); |
bf0c5130 | 2784 | fprintf_unfiltered (gdb_stdlog, " = "); |
81c4a259 | 2785 | for (i = 0; i < size; i++) |
bf0c5130 AC |
2786 | { |
2787 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
2788 | } | |
81c4a259 | 2789 | if (size <= sizeof (LONGEST)) |
bf0c5130 | 2790 | { |
81c4a259 | 2791 | ULONGEST val = extract_unsigned_integer (buf, size); |
0b1553bc UW |
2792 | fprintf_unfiltered (gdb_stdlog, " %s %s", |
2793 | core_addr_to_string_nz (val), plongest (val)); | |
bf0c5130 AC |
2794 | } |
2795 | } | |
2796 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
2797 | } | |
2798 | ||
28439f5e PA |
2799 | void |
2800 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 2801 | { |
28439f5e PA |
2802 | struct target_ops *t; |
2803 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2804 | { | |
2805 | if (t->to_fetch_registers != NULL) | |
2806 | { | |
2807 | t->to_fetch_registers (t, regcache, regno); | |
2808 | if (targetdebug) | |
2809 | debug_print_register ("target_fetch_registers", regcache, regno); | |
2810 | return; | |
2811 | } | |
2812 | } | |
c906108c SS |
2813 | } |
2814 | ||
28439f5e PA |
2815 | void |
2816 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 2817 | { |
28439f5e PA |
2818 | |
2819 | struct target_ops *t; | |
2820 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2821 | { | |
2822 | if (t->to_store_registers != NULL) | |
2823 | { | |
2824 | t->to_store_registers (t, regcache, regno); | |
2825 | if (targetdebug) | |
2826 | { | |
2827 | debug_print_register ("target_store_registers", regcache, regno); | |
2828 | } | |
2829 | return; | |
2830 | } | |
2831 | } | |
2832 | ||
2833 | noprocess (); | |
c906108c SS |
2834 | } |
2835 | ||
2836 | static void | |
316f2060 | 2837 | debug_to_prepare_to_store (struct regcache *regcache) |
c906108c | 2838 | { |
316f2060 | 2839 | debug_target.to_prepare_to_store (regcache); |
c906108c | 2840 | |
96baa820 | 2841 | fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n"); |
c906108c SS |
2842 | } |
2843 | ||
2844 | static int | |
961cb7b5 | 2845 | deprecated_debug_xfer_memory (CORE_ADDR memaddr, bfd_byte *myaddr, int len, |
c8e73a31 AC |
2846 | int write, struct mem_attrib *attrib, |
2847 | struct target_ops *target) | |
c906108c SS |
2848 | { |
2849 | int retval; | |
2850 | ||
c8e73a31 AC |
2851 | retval = debug_target.deprecated_xfer_memory (memaddr, myaddr, len, write, |
2852 | attrib, target); | |
c906108c | 2853 | |
96baa820 | 2854 | fprintf_unfiltered (gdb_stdlog, |
53b71562 JB |
2855 | "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d", |
2856 | paddress (memaddr), len, write ? "write" : "read", | |
2857 | retval); | |
c906108c | 2858 | |
c906108c SS |
2859 | if (retval > 0) |
2860 | { | |
2861 | int i; | |
2862 | ||
96baa820 | 2863 | fputs_unfiltered (", bytes =", gdb_stdlog); |
c906108c SS |
2864 | for (i = 0; i < retval; i++) |
2865 | { | |
53b71562 | 2866 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
333dabeb DJ |
2867 | { |
2868 | if (targetdebug < 2 && i > 0) | |
2869 | { | |
2870 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
2871 | break; | |
2872 | } | |
2873 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
2874 | } | |
2bc416ba | 2875 | |
96baa820 | 2876 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
c906108c SS |
2877 | } |
2878 | } | |
2879 | ||
96baa820 | 2880 | fputc_unfiltered ('\n', gdb_stdlog); |
c906108c SS |
2881 | |
2882 | return retval; | |
2883 | } | |
2884 | ||
2885 | static void | |
fba45db2 | 2886 | debug_to_files_info (struct target_ops *target) |
c906108c SS |
2887 | { |
2888 | debug_target.to_files_info (target); | |
2889 | ||
96baa820 | 2890 | fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n"); |
c906108c SS |
2891 | } |
2892 | ||
2893 | static int | |
8181d85f | 2894 | debug_to_insert_breakpoint (struct bp_target_info *bp_tgt) |
c906108c SS |
2895 | { |
2896 | int retval; | |
2897 | ||
8181d85f | 2898 | retval = debug_target.to_insert_breakpoint (bp_tgt); |
c906108c | 2899 | |
96baa820 | 2900 | fprintf_unfiltered (gdb_stdlog, |
104c1213 | 2901 | "target_insert_breakpoint (0x%lx, xxx) = %ld\n", |
8181d85f | 2902 | (unsigned long) bp_tgt->placed_address, |
104c1213 | 2903 | (unsigned long) retval); |
c906108c SS |
2904 | return retval; |
2905 | } | |
2906 | ||
2907 | static int | |
8181d85f | 2908 | debug_to_remove_breakpoint (struct bp_target_info *bp_tgt) |
c906108c SS |
2909 | { |
2910 | int retval; | |
2911 | ||
8181d85f | 2912 | retval = debug_target.to_remove_breakpoint (bp_tgt); |
c906108c | 2913 | |
96baa820 | 2914 | fprintf_unfiltered (gdb_stdlog, |
104c1213 | 2915 | "target_remove_breakpoint (0x%lx, xxx) = %ld\n", |
8181d85f | 2916 | (unsigned long) bp_tgt->placed_address, |
104c1213 | 2917 | (unsigned long) retval); |
c906108c SS |
2918 | return retval; |
2919 | } | |
2920 | ||
ccaa32c7 GS |
2921 | static int |
2922 | debug_to_can_use_hw_breakpoint (int type, int cnt, int from_tty) | |
2923 | { | |
2924 | int retval; | |
2925 | ||
2926 | retval = debug_target.to_can_use_hw_breakpoint (type, cnt, from_tty); | |
2927 | ||
2928 | fprintf_unfiltered (gdb_stdlog, | |
2929 | "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n", | |
2930 | (unsigned long) type, | |
2931 | (unsigned long) cnt, | |
2932 | (unsigned long) from_tty, | |
2933 | (unsigned long) retval); | |
2934 | return retval; | |
2935 | } | |
2936 | ||
e0d24f8d WZ |
2937 | static int |
2938 | debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
2939 | { | |
2940 | CORE_ADDR retval; | |
2941 | ||
2942 | retval = debug_target.to_region_ok_for_hw_watchpoint (addr, len); | |
2943 | ||
2944 | fprintf_unfiltered (gdb_stdlog, | |
d92524f1 | 2945 | "target_region_ok_for_hw_watchpoint (%ld, %ld) = 0x%lx\n", |
e0d24f8d WZ |
2946 | (unsigned long) addr, |
2947 | (unsigned long) len, | |
2948 | (unsigned long) retval); | |
2949 | return retval; | |
2950 | } | |
2951 | ||
ccaa32c7 GS |
2952 | static int |
2953 | debug_to_stopped_by_watchpoint (void) | |
2954 | { | |
2955 | int retval; | |
2956 | ||
2957 | retval = debug_target.to_stopped_by_watchpoint (); | |
2958 | ||
2959 | fprintf_unfiltered (gdb_stdlog, | |
d92524f1 | 2960 | "target_stopped_by_watchpoint () = %ld\n", |
ccaa32c7 GS |
2961 | (unsigned long) retval); |
2962 | return retval; | |
2963 | } | |
2964 | ||
4aa7a7f5 JJ |
2965 | static int |
2966 | debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr) | |
ccaa32c7 | 2967 | { |
4aa7a7f5 | 2968 | int retval; |
ccaa32c7 | 2969 | |
4aa7a7f5 | 2970 | retval = debug_target.to_stopped_data_address (target, addr); |
ccaa32c7 GS |
2971 | |
2972 | fprintf_unfiltered (gdb_stdlog, | |
4aa7a7f5 JJ |
2973 | "target_stopped_data_address ([0x%lx]) = %ld\n", |
2974 | (unsigned long)*addr, | |
2975 | (unsigned long)retval); | |
ccaa32c7 GS |
2976 | return retval; |
2977 | } | |
2978 | ||
5009afc5 AS |
2979 | static int |
2980 | debug_to_watchpoint_addr_within_range (struct target_ops *target, | |
2981 | CORE_ADDR addr, | |
2982 | CORE_ADDR start, int length) | |
2983 | { | |
2984 | int retval; | |
2985 | ||
2986 | retval = debug_target.to_watchpoint_addr_within_range (target, addr, | |
2987 | start, length); | |
2988 | ||
2989 | fprintf_filtered (gdb_stdlog, | |
2990 | "target_watchpoint_addr_within_range (0x%lx, 0x%lx, %d) = %d\n", | |
2991 | (unsigned long) addr, (unsigned long) start, length, | |
2992 | retval); | |
2993 | return retval; | |
2994 | } | |
2995 | ||
ccaa32c7 | 2996 | static int |
8181d85f | 2997 | debug_to_insert_hw_breakpoint (struct bp_target_info *bp_tgt) |
ccaa32c7 GS |
2998 | { |
2999 | int retval; | |
3000 | ||
8181d85f | 3001 | retval = debug_target.to_insert_hw_breakpoint (bp_tgt); |
ccaa32c7 GS |
3002 | |
3003 | fprintf_unfiltered (gdb_stdlog, | |
3004 | "target_insert_hw_breakpoint (0x%lx, xxx) = %ld\n", | |
8181d85f | 3005 | (unsigned long) bp_tgt->placed_address, |
ccaa32c7 GS |
3006 | (unsigned long) retval); |
3007 | return retval; | |
3008 | } | |
3009 | ||
3010 | static int | |
8181d85f | 3011 | debug_to_remove_hw_breakpoint (struct bp_target_info *bp_tgt) |
ccaa32c7 GS |
3012 | { |
3013 | int retval; | |
3014 | ||
8181d85f | 3015 | retval = debug_target.to_remove_hw_breakpoint (bp_tgt); |
ccaa32c7 GS |
3016 | |
3017 | fprintf_unfiltered (gdb_stdlog, | |
3018 | "target_remove_hw_breakpoint (0x%lx, xxx) = %ld\n", | |
8181d85f | 3019 | (unsigned long) bp_tgt->placed_address, |
ccaa32c7 GS |
3020 | (unsigned long) retval); |
3021 | return retval; | |
3022 | } | |
3023 | ||
3024 | static int | |
3025 | debug_to_insert_watchpoint (CORE_ADDR addr, int len, int type) | |
3026 | { | |
3027 | int retval; | |
3028 | ||
3029 | retval = debug_target.to_insert_watchpoint (addr, len, type); | |
3030 | ||
3031 | fprintf_unfiltered (gdb_stdlog, | |
3032 | "target_insert_watchpoint (0x%lx, %d, %d) = %ld\n", | |
3033 | (unsigned long) addr, len, type, (unsigned long) retval); | |
3034 | return retval; | |
3035 | } | |
3036 | ||
3037 | static int | |
3038 | debug_to_remove_watchpoint (CORE_ADDR addr, int len, int type) | |
3039 | { | |
3040 | int retval; | |
3041 | ||
ecde4882 | 3042 | retval = debug_target.to_remove_watchpoint (addr, len, type); |
ccaa32c7 GS |
3043 | |
3044 | fprintf_unfiltered (gdb_stdlog, | |
ecde4882 | 3045 | "target_remove_watchpoint (0x%lx, %d, %d) = %ld\n", |
ccaa32c7 GS |
3046 | (unsigned long) addr, len, type, (unsigned long) retval); |
3047 | return retval; | |
3048 | } | |
3049 | ||
c906108c | 3050 | static void |
fba45db2 | 3051 | debug_to_terminal_init (void) |
c906108c SS |
3052 | { |
3053 | debug_target.to_terminal_init (); | |
3054 | ||
96baa820 | 3055 | fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n"); |
c906108c SS |
3056 | } |
3057 | ||
3058 | static void | |
fba45db2 | 3059 | debug_to_terminal_inferior (void) |
c906108c SS |
3060 | { |
3061 | debug_target.to_terminal_inferior (); | |
3062 | ||
96baa820 | 3063 | fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n"); |
c906108c SS |
3064 | } |
3065 | ||
3066 | static void | |
fba45db2 | 3067 | debug_to_terminal_ours_for_output (void) |
c906108c SS |
3068 | { |
3069 | debug_target.to_terminal_ours_for_output (); | |
3070 | ||
96baa820 | 3071 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n"); |
c906108c SS |
3072 | } |
3073 | ||
3074 | static void | |
fba45db2 | 3075 | debug_to_terminal_ours (void) |
c906108c SS |
3076 | { |
3077 | debug_target.to_terminal_ours (); | |
3078 | ||
96baa820 | 3079 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n"); |
c906108c SS |
3080 | } |
3081 | ||
a790ad35 SC |
3082 | static void |
3083 | debug_to_terminal_save_ours (void) | |
3084 | { | |
3085 | debug_target.to_terminal_save_ours (); | |
3086 | ||
3087 | fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n"); | |
3088 | } | |
3089 | ||
c906108c | 3090 | static void |
fba45db2 | 3091 | debug_to_terminal_info (char *arg, int from_tty) |
c906108c SS |
3092 | { |
3093 | debug_target.to_terminal_info (arg, from_tty); | |
3094 | ||
96baa820 | 3095 | fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg, |
c906108c SS |
3096 | from_tty); |
3097 | } | |
3098 | ||
c906108c | 3099 | static void |
fba45db2 | 3100 | debug_to_load (char *args, int from_tty) |
c906108c SS |
3101 | { |
3102 | debug_target.to_load (args, from_tty); | |
3103 | ||
96baa820 | 3104 | fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty); |
c906108c SS |
3105 | } |
3106 | ||
3107 | static int | |
fba45db2 | 3108 | debug_to_lookup_symbol (char *name, CORE_ADDR *addrp) |
c906108c SS |
3109 | { |
3110 | int retval; | |
3111 | ||
3112 | retval = debug_target.to_lookup_symbol (name, addrp); | |
3113 | ||
96baa820 | 3114 | fprintf_unfiltered (gdb_stdlog, "target_lookup_symbol (%s, xxx)\n", name); |
c906108c SS |
3115 | |
3116 | return retval; | |
3117 | } | |
3118 | ||
c906108c | 3119 | static void |
39f77062 | 3120 | debug_to_post_startup_inferior (ptid_t ptid) |
c906108c | 3121 | { |
39f77062 | 3122 | debug_target.to_post_startup_inferior (ptid); |
c906108c | 3123 | |
96baa820 | 3124 | fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n", |
39f77062 | 3125 | PIDGET (ptid)); |
c906108c SS |
3126 | } |
3127 | ||
3128 | static void | |
fba45db2 | 3129 | debug_to_acknowledge_created_inferior (int pid) |
c906108c SS |
3130 | { |
3131 | debug_target.to_acknowledge_created_inferior (pid); | |
3132 | ||
96baa820 | 3133 | fprintf_unfiltered (gdb_stdlog, "target_acknowledge_created_inferior (%d)\n", |
c906108c SS |
3134 | pid); |
3135 | } | |
3136 | ||
fa113d1a | 3137 | static void |
fba45db2 | 3138 | debug_to_insert_fork_catchpoint (int pid) |
c906108c | 3139 | { |
fa113d1a | 3140 | debug_target.to_insert_fork_catchpoint (pid); |
c906108c | 3141 | |
fa113d1a AC |
3142 | fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d)\n", |
3143 | pid); | |
c906108c SS |
3144 | } |
3145 | ||
3146 | static int | |
fba45db2 | 3147 | debug_to_remove_fork_catchpoint (int pid) |
c906108c | 3148 | { |
c5aa993b | 3149 | int retval; |
c906108c SS |
3150 | |
3151 | retval = debug_target.to_remove_fork_catchpoint (pid); | |
3152 | ||
96baa820 | 3153 | fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n", |
c5aa993b | 3154 | pid, retval); |
c906108c SS |
3155 | |
3156 | return retval; | |
3157 | } | |
3158 | ||
fa113d1a | 3159 | static void |
fba45db2 | 3160 | debug_to_insert_vfork_catchpoint (int pid) |
c906108c | 3161 | { |
fa113d1a | 3162 | debug_target.to_insert_vfork_catchpoint (pid); |
c906108c | 3163 | |
fa113d1a AC |
3164 | fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d)\n", |
3165 | pid); | |
c906108c SS |
3166 | } |
3167 | ||
3168 | static int | |
fba45db2 | 3169 | debug_to_remove_vfork_catchpoint (int pid) |
c906108c | 3170 | { |
c5aa993b | 3171 | int retval; |
c906108c SS |
3172 | |
3173 | retval = debug_target.to_remove_vfork_catchpoint (pid); | |
3174 | ||
96baa820 | 3175 | fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n", |
c5aa993b | 3176 | pid, retval); |
c906108c SS |
3177 | |
3178 | return retval; | |
3179 | } | |
3180 | ||
fa113d1a | 3181 | static void |
fba45db2 | 3182 | debug_to_insert_exec_catchpoint (int pid) |
c906108c | 3183 | { |
fa113d1a | 3184 | debug_target.to_insert_exec_catchpoint (pid); |
c906108c | 3185 | |
fa113d1a AC |
3186 | fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d)\n", |
3187 | pid); | |
c906108c SS |
3188 | } |
3189 | ||
3190 | static int | |
fba45db2 | 3191 | debug_to_remove_exec_catchpoint (int pid) |
c906108c | 3192 | { |
c5aa993b | 3193 | int retval; |
c906108c SS |
3194 | |
3195 | retval = debug_target.to_remove_exec_catchpoint (pid); | |
3196 | ||
96baa820 | 3197 | fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n", |
c5aa993b | 3198 | pid, retval); |
c906108c SS |
3199 | |
3200 | return retval; | |
3201 | } | |
3202 | ||
c906108c | 3203 | static int |
fba45db2 | 3204 | debug_to_has_exited (int pid, int wait_status, int *exit_status) |
c906108c | 3205 | { |
c5aa993b | 3206 | int has_exited; |
c906108c SS |
3207 | |
3208 | has_exited = debug_target.to_has_exited (pid, wait_status, exit_status); | |
3209 | ||
96baa820 | 3210 | fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n", |
c5aa993b | 3211 | pid, wait_status, *exit_status, has_exited); |
c906108c SS |
3212 | |
3213 | return has_exited; | |
3214 | } | |
3215 | ||
c906108c | 3216 | static int |
fba45db2 | 3217 | debug_to_can_run (void) |
c906108c SS |
3218 | { |
3219 | int retval; | |
3220 | ||
3221 | retval = debug_target.to_can_run (); | |
3222 | ||
96baa820 | 3223 | fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval); |
c906108c SS |
3224 | |
3225 | return retval; | |
3226 | } | |
3227 | ||
3228 | static void | |
39f77062 | 3229 | debug_to_notice_signals (ptid_t ptid) |
c906108c | 3230 | { |
39f77062 | 3231 | debug_target.to_notice_signals (ptid); |
c906108c | 3232 | |
39f77062 KB |
3233 | fprintf_unfiltered (gdb_stdlog, "target_notice_signals (%d)\n", |
3234 | PIDGET (ptid)); | |
c906108c SS |
3235 | } |
3236 | ||
c906108c | 3237 | static void |
94cc34af | 3238 | debug_to_stop (ptid_t ptid) |
c906108c | 3239 | { |
94cc34af | 3240 | debug_target.to_stop (ptid); |
c906108c | 3241 | |
94cc34af PA |
3242 | fprintf_unfiltered (gdb_stdlog, "target_stop (%s)\n", |
3243 | target_pid_to_str (ptid)); | |
c906108c SS |
3244 | } |
3245 | ||
96baa820 JM |
3246 | static void |
3247 | debug_to_rcmd (char *command, | |
d9fcf2fb | 3248 | struct ui_file *outbuf) |
96baa820 JM |
3249 | { |
3250 | debug_target.to_rcmd (command, outbuf); | |
3251 | fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command); | |
3252 | } | |
3253 | ||
c906108c | 3254 | static char * |
fba45db2 | 3255 | debug_to_pid_to_exec_file (int pid) |
c906108c | 3256 | { |
c5aa993b | 3257 | char *exec_file; |
c906108c SS |
3258 | |
3259 | exec_file = debug_target.to_pid_to_exec_file (pid); | |
3260 | ||
96baa820 | 3261 | fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n", |
c5aa993b | 3262 | pid, exec_file); |
c906108c SS |
3263 | |
3264 | return exec_file; | |
3265 | } | |
3266 | ||
c906108c | 3267 | static void |
fba45db2 | 3268 | setup_target_debug (void) |
c906108c SS |
3269 | { |
3270 | memcpy (&debug_target, ¤t_target, sizeof debug_target); | |
3271 | ||
3272 | current_target.to_open = debug_to_open; | |
c906108c | 3273 | current_target.to_post_attach = debug_to_post_attach; |
c906108c | 3274 | current_target.to_prepare_to_store = debug_to_prepare_to_store; |
c8e73a31 | 3275 | current_target.deprecated_xfer_memory = deprecated_debug_xfer_memory; |
c906108c SS |
3276 | current_target.to_files_info = debug_to_files_info; |
3277 | current_target.to_insert_breakpoint = debug_to_insert_breakpoint; | |
3278 | current_target.to_remove_breakpoint = debug_to_remove_breakpoint; | |
ccaa32c7 GS |
3279 | current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint; |
3280 | current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint; | |
3281 | current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint; | |
3282 | current_target.to_insert_watchpoint = debug_to_insert_watchpoint; | |
3283 | current_target.to_remove_watchpoint = debug_to_remove_watchpoint; | |
3284 | current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint; | |
3285 | current_target.to_stopped_data_address = debug_to_stopped_data_address; | |
5009afc5 | 3286 | current_target.to_watchpoint_addr_within_range = debug_to_watchpoint_addr_within_range; |
e0d24f8d | 3287 | current_target.to_region_ok_for_hw_watchpoint = debug_to_region_ok_for_hw_watchpoint; |
c906108c SS |
3288 | current_target.to_terminal_init = debug_to_terminal_init; |
3289 | current_target.to_terminal_inferior = debug_to_terminal_inferior; | |
3290 | current_target.to_terminal_ours_for_output = debug_to_terminal_ours_for_output; | |
3291 | current_target.to_terminal_ours = debug_to_terminal_ours; | |
a790ad35 | 3292 | current_target.to_terminal_save_ours = debug_to_terminal_save_ours; |
c906108c | 3293 | current_target.to_terminal_info = debug_to_terminal_info; |
c906108c SS |
3294 | current_target.to_load = debug_to_load; |
3295 | current_target.to_lookup_symbol = debug_to_lookup_symbol; | |
c906108c SS |
3296 | current_target.to_post_startup_inferior = debug_to_post_startup_inferior; |
3297 | current_target.to_acknowledge_created_inferior = debug_to_acknowledge_created_inferior; | |
c906108c SS |
3298 | current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint; |
3299 | current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint; | |
3300 | current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint; | |
3301 | current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint; | |
c906108c SS |
3302 | current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint; |
3303 | current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint; | |
c906108c | 3304 | current_target.to_has_exited = debug_to_has_exited; |
c906108c SS |
3305 | current_target.to_can_run = debug_to_can_run; |
3306 | current_target.to_notice_signals = debug_to_notice_signals; | |
c906108c | 3307 | current_target.to_stop = debug_to_stop; |
96baa820 | 3308 | current_target.to_rcmd = debug_to_rcmd; |
c906108c | 3309 | current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file; |
c906108c | 3310 | } |
c906108c | 3311 | \f |
c5aa993b JM |
3312 | |
3313 | static char targ_desc[] = | |
3314 | "Names of targets and files being debugged.\n\ | |
c906108c SS |
3315 | Shows the entire stack of targets currently in use (including the exec-file,\n\ |
3316 | core-file, and process, if any), as well as the symbol file name."; | |
3317 | ||
96baa820 JM |
3318 | static void |
3319 | do_monitor_command (char *cmd, | |
3320 | int from_tty) | |
3321 | { | |
2b5fe715 AC |
3322 | if ((current_target.to_rcmd |
3323 | == (void (*) (char *, struct ui_file *)) tcomplain) | |
96baa820 | 3324 | || (current_target.to_rcmd == debug_to_rcmd |
2b5fe715 AC |
3325 | && (debug_target.to_rcmd |
3326 | == (void (*) (char *, struct ui_file *)) tcomplain))) | |
8a3fe4f8 | 3327 | error (_("\"monitor\" command not supported by this target.")); |
96baa820 JM |
3328 | target_rcmd (cmd, gdb_stdtarg); |
3329 | } | |
3330 | ||
87680a14 JB |
3331 | /* Print the name of each layers of our target stack. */ |
3332 | ||
3333 | static void | |
3334 | maintenance_print_target_stack (char *cmd, int from_tty) | |
3335 | { | |
3336 | struct target_ops *t; | |
3337 | ||
3338 | printf_filtered (_("The current target stack is:\n")); | |
3339 | ||
3340 | for (t = target_stack; t != NULL; t = t->beneath) | |
3341 | { | |
3342 | printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname); | |
3343 | } | |
3344 | } | |
3345 | ||
c6ebd6cf VP |
3346 | /* Controls if async mode is permitted. */ |
3347 | int target_async_permitted = 0; | |
3348 | ||
3349 | /* The set command writes to this variable. If the inferior is | |
3350 | executing, linux_nat_async_permitted is *not* updated. */ | |
3351 | static int target_async_permitted_1 = 0; | |
3352 | ||
3353 | static void | |
3354 | set_maintenance_target_async_permitted (char *args, int from_tty, | |
3355 | struct cmd_list_element *c) | |
3356 | { | |
c35b1492 | 3357 | if (have_live_inferiors ()) |
c6ebd6cf VP |
3358 | { |
3359 | target_async_permitted_1 = target_async_permitted; | |
3360 | error (_("Cannot change this setting while the inferior is running.")); | |
3361 | } | |
3362 | ||
3363 | target_async_permitted = target_async_permitted_1; | |
3364 | } | |
3365 | ||
3366 | static void | |
3367 | show_maintenance_target_async_permitted (struct ui_file *file, int from_tty, | |
3368 | struct cmd_list_element *c, | |
3369 | const char *value) | |
3370 | { | |
3371 | fprintf_filtered (file, _("\ | |
3372 | Controlling the inferior in asynchronous mode is %s.\n"), value); | |
3373 | } | |
3374 | ||
c906108c | 3375 | void |
fba45db2 | 3376 | initialize_targets (void) |
c906108c SS |
3377 | { |
3378 | init_dummy_target (); | |
3379 | push_target (&dummy_target); | |
3380 | ||
3381 | add_info ("target", target_info, targ_desc); | |
3382 | add_info ("files", target_info, targ_desc); | |
3383 | ||
85c07804 AC |
3384 | add_setshow_zinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
3385 | Set target debugging."), _("\ | |
3386 | Show target debugging."), _("\ | |
333dabeb DJ |
3387 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
3388 | verbose. Changes do not take effect until the next \"run\" or \"target\"\n\ | |
85c07804 AC |
3389 | command."), |
3390 | NULL, | |
920d2a44 | 3391 | show_targetdebug, |
85c07804 | 3392 | &setdebuglist, &showdebuglist); |
3a11626d | 3393 | |
2bc416ba | 3394 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
3395 | &trust_readonly, _("\ |
3396 | Set mode for reading from readonly sections."), _("\ | |
3397 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
3398 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
3399 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 3400 | result in significant performance improvement for remote targets."), |
2c5b56ce | 3401 | NULL, |
920d2a44 | 3402 | show_trust_readonly, |
e707bbc2 | 3403 | &setlist, &showlist); |
96baa820 JM |
3404 | |
3405 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 3406 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 3407 | |
87680a14 JB |
3408 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
3409 | _("Print the name of each layer of the internal target stack."), | |
3410 | &maintenanceprintlist); | |
3411 | ||
c6ebd6cf VP |
3412 | add_setshow_boolean_cmd ("target-async", no_class, |
3413 | &target_async_permitted_1, _("\ | |
3414 | Set whether gdb controls the inferior in asynchronous mode."), _("\ | |
3415 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
3416 | Tells gdb whether to control the inferior in asynchronous mode."), | |
3417 | set_maintenance_target_async_permitted, | |
3418 | show_maintenance_target_async_permitted, | |
3419 | &setlist, | |
3420 | &showlist); | |
3421 | ||
8add0441 | 3422 | target_dcache = dcache_init (); |
c906108c | 3423 | } |