Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Select target systems and architectures at runtime for GDB. |
7998dfc3 AC |
2 | |
3 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, | |
c6f0559b | 4 | 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc. |
7998dfc3 | 5 | |
c906108c SS |
6 | Contributed by Cygnus Support. |
7 | ||
c5aa993b | 8 | This file is part of GDB. |
c906108c | 9 | |
c5aa993b JM |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2 of the License, or | |
13 | (at your option) any later version. | |
c906108c | 14 | |
c5aa993b JM |
15 | This program is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
c906108c | 19 | |
c5aa993b JM |
20 | You should have received a copy of the GNU General Public License |
21 | along with this program; if not, write to the Free Software | |
22 | Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
24 | |
25 | #include "defs.h" | |
26 | #include <errno.h> | |
c906108c SS |
27 | #include "gdb_string.h" |
28 | #include "target.h" | |
29 | #include "gdbcmd.h" | |
30 | #include "symtab.h" | |
31 | #include "inferior.h" | |
32 | #include "bfd.h" | |
33 | #include "symfile.h" | |
34 | #include "objfiles.h" | |
03f2053f | 35 | #include "gdb_wait.h" |
4930751a | 36 | #include "dcache.h" |
c906108c | 37 | #include <signal.h> |
4e052eda | 38 | #include "regcache.h" |
0088c768 | 39 | #include "gdb_assert.h" |
b6591e8b | 40 | #include "gdbcore.h" |
c906108c | 41 | |
a14ed312 | 42 | static void target_info (char *, int); |
c906108c | 43 | |
a14ed312 | 44 | static void maybe_kill_then_attach (char *, int); |
c906108c | 45 | |
a14ed312 | 46 | static void kill_or_be_killed (int); |
c906108c | 47 | |
a14ed312 | 48 | static void default_terminal_info (char *, int); |
c906108c | 49 | |
ccaa32c7 GS |
50 | static int default_region_size_ok_for_hw_watchpoint (int); |
51 | ||
a14ed312 | 52 | static int nosymbol (char *, CORE_ADDR *); |
c906108c | 53 | |
a14ed312 | 54 | static void tcomplain (void); |
c906108c | 55 | |
a14ed312 | 56 | static int nomemory (CORE_ADDR, char *, int, int, struct target_ops *); |
c906108c | 57 | |
a14ed312 | 58 | static int return_zero (void); |
c906108c | 59 | |
a14ed312 | 60 | static int return_one (void); |
c906108c | 61 | |
ccaa32c7 GS |
62 | static int return_minus_one (void); |
63 | ||
a14ed312 | 64 | void target_ignore (void); |
c906108c | 65 | |
a14ed312 | 66 | static void target_command (char *, int); |
c906108c | 67 | |
a14ed312 | 68 | static struct target_ops *find_default_run_target (char *); |
c906108c | 69 | |
a14ed312 | 70 | static void nosupport_runtime (void); |
392a587b | 71 | |
4b8a223f | 72 | static LONGEST default_xfer_partial (struct target_ops *ops, |
0088c768 | 73 | enum target_object object, |
8aa91c1e AC |
74 | const char *annex, void *readbuf, |
75 | const void *writebuf, | |
76 | ULONGEST offset, LONGEST len); | |
0088c768 | 77 | |
917317f4 JM |
78 | /* Transfer LEN bytes between target address MEMADDR and GDB address |
79 | MYADDR. Returns 0 for success, errno code for failure (which | |
80 | includes partial transfers -- if you want a more useful response to | |
81 | partial transfers, try either target_read_memory_partial or | |
82 | target_write_memory_partial). */ | |
c906108c | 83 | |
570b8f7c AC |
84 | static int target_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, |
85 | int write); | |
c906108c | 86 | |
a14ed312 | 87 | static void init_dummy_target (void); |
c906108c | 88 | |
a14ed312 | 89 | static void debug_to_open (char *, int); |
c906108c | 90 | |
a14ed312 | 91 | static void debug_to_close (int); |
c906108c | 92 | |
a14ed312 | 93 | static void debug_to_attach (char *, int); |
c906108c | 94 | |
a14ed312 | 95 | static void debug_to_detach (char *, int); |
c906108c | 96 | |
6ad8ae5c DJ |
97 | static void debug_to_disconnect (char *, int); |
98 | ||
39f77062 | 99 | static void debug_to_resume (ptid_t, int, enum target_signal); |
c906108c | 100 | |
39f77062 | 101 | static ptid_t debug_to_wait (ptid_t, struct target_waitstatus *); |
c906108c | 102 | |
a14ed312 | 103 | static void debug_to_fetch_registers (int); |
c906108c | 104 | |
a14ed312 | 105 | static void debug_to_store_registers (int); |
c906108c | 106 | |
a14ed312 | 107 | static void debug_to_prepare_to_store (void); |
c906108c | 108 | |
5ae5f592 AC |
109 | static int debug_to_xfer_memory (CORE_ADDR, char *, int, int, |
110 | struct mem_attrib *, struct target_ops *); | |
c906108c | 111 | |
a14ed312 | 112 | static void debug_to_files_info (struct target_ops *); |
c906108c | 113 | |
a14ed312 | 114 | static int debug_to_insert_breakpoint (CORE_ADDR, char *); |
c906108c | 115 | |
a14ed312 | 116 | static int debug_to_remove_breakpoint (CORE_ADDR, char *); |
c906108c | 117 | |
ccaa32c7 GS |
118 | static int debug_to_can_use_hw_breakpoint (int, int, int); |
119 | ||
120 | static int debug_to_insert_hw_breakpoint (CORE_ADDR, char *); | |
121 | ||
122 | static int debug_to_remove_hw_breakpoint (CORE_ADDR, char *); | |
123 | ||
124 | static int debug_to_insert_watchpoint (CORE_ADDR, int, int); | |
125 | ||
126 | static int debug_to_remove_watchpoint (CORE_ADDR, int, int); | |
127 | ||
128 | static int debug_to_stopped_by_watchpoint (void); | |
129 | ||
130 | static CORE_ADDR debug_to_stopped_data_address (void); | |
131 | ||
132 | static int debug_to_region_size_ok_for_hw_watchpoint (int); | |
133 | ||
a14ed312 | 134 | static void debug_to_terminal_init (void); |
c906108c | 135 | |
a14ed312 | 136 | static void debug_to_terminal_inferior (void); |
c906108c | 137 | |
a14ed312 | 138 | static void debug_to_terminal_ours_for_output (void); |
c906108c | 139 | |
a790ad35 SC |
140 | static void debug_to_terminal_save_ours (void); |
141 | ||
a14ed312 | 142 | static void debug_to_terminal_ours (void); |
c906108c | 143 | |
a14ed312 | 144 | static void debug_to_terminal_info (char *, int); |
c906108c | 145 | |
a14ed312 | 146 | static void debug_to_kill (void); |
c906108c | 147 | |
a14ed312 | 148 | static void debug_to_load (char *, int); |
c906108c | 149 | |
a14ed312 | 150 | static int debug_to_lookup_symbol (char *, CORE_ADDR *); |
c906108c | 151 | |
a14ed312 | 152 | static void debug_to_mourn_inferior (void); |
c906108c | 153 | |
a14ed312 | 154 | static int debug_to_can_run (void); |
c906108c | 155 | |
39f77062 | 156 | static void debug_to_notice_signals (ptid_t); |
c906108c | 157 | |
39f77062 | 158 | static int debug_to_thread_alive (ptid_t); |
c906108c | 159 | |
a14ed312 | 160 | static void debug_to_stop (void); |
c906108c | 161 | |
5ac10fd1 AC |
162 | /* NOTE: cagney/2004-09-29: Many targets reference this variable in |
163 | wierd and mysterious ways. Putting the variable here lets those | |
164 | wierd and mysterious ways keep building while they are being | |
165 | converted to the inferior inheritance structure. */ | |
1df84f13 | 166 | struct target_ops deprecated_child_ops; |
5ac10fd1 | 167 | |
c906108c SS |
168 | /* Pointer to array of target architecture structures; the size of the |
169 | array; the current index into the array; the allocated size of the | |
170 | array. */ | |
171 | struct target_ops **target_structs; | |
172 | unsigned target_struct_size; | |
173 | unsigned target_struct_index; | |
174 | unsigned target_struct_allocsize; | |
175 | #define DEFAULT_ALLOCSIZE 10 | |
176 | ||
177 | /* The initial current target, so that there is always a semi-valid | |
178 | current target. */ | |
179 | ||
180 | static struct target_ops dummy_target; | |
181 | ||
182 | /* Top of target stack. */ | |
183 | ||
258b763a | 184 | static struct target_ops *target_stack; |
c906108c SS |
185 | |
186 | /* The target structure we are currently using to talk to a process | |
187 | or file or whatever "inferior" we have. */ | |
188 | ||
189 | struct target_ops current_target; | |
190 | ||
191 | /* Command list for target. */ | |
192 | ||
193 | static struct cmd_list_element *targetlist = NULL; | |
194 | ||
195 | /* Nonzero if we are debugging an attached outside process | |
196 | rather than an inferior. */ | |
197 | ||
198 | int attach_flag; | |
199 | ||
c906108c SS |
200 | /* Non-zero if we want to see trace of target level stuff. */ |
201 | ||
202 | static int targetdebug = 0; | |
203 | ||
a14ed312 | 204 | static void setup_target_debug (void); |
c906108c | 205 | |
4930751a C |
206 | DCACHE *target_dcache; |
207 | ||
c906108c SS |
208 | /* The user just typed 'target' without the name of a target. */ |
209 | ||
c906108c | 210 | static void |
fba45db2 | 211 | target_command (char *arg, int from_tty) |
c906108c SS |
212 | { |
213 | fputs_filtered ("Argument required (target name). Try `help target'\n", | |
214 | gdb_stdout); | |
215 | } | |
216 | ||
217 | /* Add a possible target architecture to the list. */ | |
218 | ||
219 | void | |
fba45db2 | 220 | add_target (struct target_ops *t) |
c906108c | 221 | { |
0088c768 | 222 | /* Provide default values for all "must have" methods. */ |
0b603eba AC |
223 | if (t->to_xfer_partial == NULL) |
224 | t->to_xfer_partial = default_xfer_partial; | |
0088c768 | 225 | |
c906108c SS |
226 | if (!target_structs) |
227 | { | |
228 | target_struct_allocsize = DEFAULT_ALLOCSIZE; | |
229 | target_structs = (struct target_ops **) xmalloc | |
230 | (target_struct_allocsize * sizeof (*target_structs)); | |
231 | } | |
232 | if (target_struct_size >= target_struct_allocsize) | |
233 | { | |
234 | target_struct_allocsize *= 2; | |
235 | target_structs = (struct target_ops **) | |
c5aa993b JM |
236 | xrealloc ((char *) target_structs, |
237 | target_struct_allocsize * sizeof (*target_structs)); | |
c906108c SS |
238 | } |
239 | target_structs[target_struct_size++] = t; | |
c906108c SS |
240 | |
241 | if (targetlist == NULL) | |
242 | add_prefix_cmd ("target", class_run, target_command, | |
243 | "Connect to a target machine or process.\n\ | |
244 | The first argument is the type or protocol of the target machine.\n\ | |
245 | Remaining arguments are interpreted by the target protocol. For more\n\ | |
246 | information on the arguments for a particular protocol, type\n\ | |
247 | `help target ' followed by the protocol name.", | |
248 | &targetlist, "target ", 0, &cmdlist); | |
249 | add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc, &targetlist); | |
250 | } | |
251 | ||
252 | /* Stub functions */ | |
253 | ||
254 | void | |
fba45db2 | 255 | target_ignore (void) |
c906108c SS |
256 | { |
257 | } | |
258 | ||
11cf8741 JM |
259 | void |
260 | target_load (char *arg, int from_tty) | |
261 | { | |
4930751a | 262 | dcache_invalidate (target_dcache); |
11cf8741 JM |
263 | (*current_target.to_load) (arg, from_tty); |
264 | } | |
265 | ||
c906108c | 266 | static int |
fba45db2 KB |
267 | nomemory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
268 | struct target_ops *t) | |
c906108c | 269 | { |
c5aa993b JM |
270 | errno = EIO; /* Can't read/write this location */ |
271 | return 0; /* No bytes handled */ | |
c906108c SS |
272 | } |
273 | ||
274 | static void | |
fba45db2 | 275 | tcomplain (void) |
c906108c SS |
276 | { |
277 | error ("You can't do that when your target is `%s'", | |
278 | current_target.to_shortname); | |
279 | } | |
280 | ||
281 | void | |
fba45db2 | 282 | noprocess (void) |
c906108c SS |
283 | { |
284 | error ("You can't do that without a process to debug."); | |
285 | } | |
286 | ||
c906108c | 287 | static int |
fba45db2 | 288 | nosymbol (char *name, CORE_ADDR *addrp) |
c906108c | 289 | { |
c5aa993b | 290 | return 1; /* Symbol does not exist in target env */ |
c906108c SS |
291 | } |
292 | ||
392a587b | 293 | static void |
fba45db2 | 294 | nosupport_runtime (void) |
c906108c | 295 | { |
39f77062 | 296 | if (ptid_equal (inferior_ptid, null_ptid)) |
c906108c SS |
297 | noprocess (); |
298 | else | |
299 | error ("No run-time support for this"); | |
300 | } | |
301 | ||
302 | ||
c906108c | 303 | static void |
fba45db2 | 304 | default_terminal_info (char *args, int from_tty) |
c906108c | 305 | { |
c5aa993b | 306 | printf_unfiltered ("No saved terminal information.\n"); |
c906108c SS |
307 | } |
308 | ||
309 | /* This is the default target_create_inferior and target_attach function. | |
310 | If the current target is executing, it asks whether to kill it off. | |
311 | If this function returns without calling error(), it has killed off | |
312 | the target, and the operation should be attempted. */ | |
313 | ||
314 | static void | |
fba45db2 | 315 | kill_or_be_killed (int from_tty) |
c906108c SS |
316 | { |
317 | if (target_has_execution) | |
318 | { | |
319 | printf_unfiltered ("You are already running a program:\n"); | |
320 | target_files_info (); | |
c5aa993b JM |
321 | if (query ("Kill it? ")) |
322 | { | |
323 | target_kill (); | |
324 | if (target_has_execution) | |
325 | error ("Killing the program did not help."); | |
326 | return; | |
327 | } | |
328 | else | |
329 | { | |
330 | error ("Program not killed."); | |
331 | } | |
c906108c | 332 | } |
c5aa993b | 333 | tcomplain (); |
c906108c SS |
334 | } |
335 | ||
336 | static void | |
fba45db2 | 337 | maybe_kill_then_attach (char *args, int from_tty) |
c906108c SS |
338 | { |
339 | kill_or_be_killed (from_tty); | |
340 | target_attach (args, from_tty); | |
341 | } | |
342 | ||
343 | static void | |
c27cda74 AC |
344 | maybe_kill_then_create_inferior (char *exec, char *args, char **env, |
345 | int from_tty) | |
c906108c SS |
346 | { |
347 | kill_or_be_killed (0); | |
c27cda74 | 348 | target_create_inferior (exec, args, env, from_tty); |
c906108c SS |
349 | } |
350 | ||
7998dfc3 AC |
351 | /* Go through the target stack from top to bottom, copying over zero |
352 | entries in current_target, then filling in still empty entries. In | |
353 | effect, we are doing class inheritance through the pushed target | |
354 | vectors. | |
355 | ||
356 | NOTE: cagney/2003-10-17: The problem with this inheritance, as it | |
357 | is currently implemented, is that it discards any knowledge of | |
358 | which target an inherited method originally belonged to. | |
359 | Consequently, new new target methods should instead explicitly and | |
360 | locally search the target stack for the target that can handle the | |
361 | request. */ | |
c906108c SS |
362 | |
363 | static void | |
7998dfc3 | 364 | update_current_target (void) |
c906108c | 365 | { |
7998dfc3 AC |
366 | struct target_ops *t; |
367 | ||
368 | /* First, reset curren'ts contents. */ | |
369 | memset (¤t_target, 0, sizeof (current_target)); | |
370 | ||
371 | #define INHERIT(FIELD, TARGET) \ | |
372 | if (!current_target.FIELD) \ | |
373 | current_target.FIELD = (TARGET)->FIELD | |
374 | ||
375 | for (t = target_stack; t; t = t->beneath) | |
376 | { | |
377 | INHERIT (to_shortname, t); | |
378 | INHERIT (to_longname, t); | |
379 | INHERIT (to_doc, t); | |
380 | INHERIT (to_open, t); | |
381 | INHERIT (to_close, t); | |
382 | INHERIT (to_attach, t); | |
383 | INHERIT (to_post_attach, t); | |
384 | INHERIT (to_detach, t); | |
385 | INHERIT (to_disconnect, t); | |
386 | INHERIT (to_resume, t); | |
387 | INHERIT (to_wait, t); | |
7998dfc3 AC |
388 | INHERIT (to_fetch_registers, t); |
389 | INHERIT (to_store_registers, t); | |
390 | INHERIT (to_prepare_to_store, t); | |
391 | INHERIT (to_xfer_memory, t); | |
392 | INHERIT (to_files_info, t); | |
393 | INHERIT (to_insert_breakpoint, t); | |
394 | INHERIT (to_remove_breakpoint, t); | |
395 | INHERIT (to_can_use_hw_breakpoint, t); | |
396 | INHERIT (to_insert_hw_breakpoint, t); | |
397 | INHERIT (to_remove_hw_breakpoint, t); | |
398 | INHERIT (to_insert_watchpoint, t); | |
399 | INHERIT (to_remove_watchpoint, t); | |
400 | INHERIT (to_stopped_data_address, t); | |
401 | INHERIT (to_stopped_by_watchpoint, t); | |
402 | INHERIT (to_have_continuable_watchpoint, t); | |
403 | INHERIT (to_region_size_ok_for_hw_watchpoint, t); | |
404 | INHERIT (to_terminal_init, t); | |
405 | INHERIT (to_terminal_inferior, t); | |
406 | INHERIT (to_terminal_ours_for_output, t); | |
407 | INHERIT (to_terminal_ours, t); | |
408 | INHERIT (to_terminal_save_ours, t); | |
409 | INHERIT (to_terminal_info, t); | |
410 | INHERIT (to_kill, t); | |
411 | INHERIT (to_load, t); | |
412 | INHERIT (to_lookup_symbol, t); | |
413 | INHERIT (to_create_inferior, t); | |
414 | INHERIT (to_post_startup_inferior, t); | |
415 | INHERIT (to_acknowledge_created_inferior, t); | |
416 | INHERIT (to_insert_fork_catchpoint, t); | |
417 | INHERIT (to_remove_fork_catchpoint, t); | |
418 | INHERIT (to_insert_vfork_catchpoint, t); | |
419 | INHERIT (to_remove_vfork_catchpoint, t); | |
420 | INHERIT (to_follow_fork, t); | |
421 | INHERIT (to_insert_exec_catchpoint, t); | |
422 | INHERIT (to_remove_exec_catchpoint, t); | |
423 | INHERIT (to_reported_exec_events_per_exec_call, t); | |
424 | INHERIT (to_has_exited, t); | |
425 | INHERIT (to_mourn_inferior, t); | |
426 | INHERIT (to_can_run, t); | |
427 | INHERIT (to_notice_signals, t); | |
428 | INHERIT (to_thread_alive, t); | |
429 | INHERIT (to_find_new_threads, t); | |
430 | INHERIT (to_pid_to_str, t); | |
431 | INHERIT (to_extra_thread_info, t); | |
432 | INHERIT (to_stop, t); | |
4b8a223f | 433 | /* Do not inherit to_xfer_partial. */ |
7998dfc3 AC |
434 | INHERIT (to_rcmd, t); |
435 | INHERIT (to_enable_exception_callback, t); | |
436 | INHERIT (to_get_current_exception_event, t); | |
437 | INHERIT (to_pid_to_exec_file, t); | |
438 | INHERIT (to_stratum, t); | |
439 | INHERIT (to_has_all_memory, t); | |
440 | INHERIT (to_has_memory, t); | |
441 | INHERIT (to_has_stack, t); | |
442 | INHERIT (to_has_registers, t); | |
443 | INHERIT (to_has_execution, t); | |
444 | INHERIT (to_has_thread_control, t); | |
445 | INHERIT (to_sections, t); | |
446 | INHERIT (to_sections_end, t); | |
447 | INHERIT (to_can_async_p, t); | |
448 | INHERIT (to_is_async_p, t); | |
449 | INHERIT (to_async, t); | |
450 | INHERIT (to_async_mask_value, t); | |
451 | INHERIT (to_find_memory_regions, t); | |
452 | INHERIT (to_make_corefile_notes, t); | |
453 | INHERIT (to_get_thread_local_address, t); | |
454 | INHERIT (to_magic, t); | |
455 | } | |
456 | #undef INHERIT | |
457 | ||
458 | /* Clean up a target struct so it no longer has any zero pointers in | |
0088c768 AC |
459 | it. Some entries are defaulted to a method that print an error, |
460 | others are hard-wired to a standard recursive default. */ | |
c906108c SS |
461 | |
462 | #define de_fault(field, value) \ | |
7998dfc3 AC |
463 | if (!current_target.field) \ |
464 | current_target.field = value | |
0d06e24b JM |
465 | |
466 | de_fault (to_open, | |
467 | (void (*) (char *, int)) | |
468 | tcomplain); | |
469 | de_fault (to_close, | |
470 | (void (*) (int)) | |
471 | target_ignore); | |
472 | de_fault (to_attach, | |
473 | maybe_kill_then_attach); | |
474 | de_fault (to_post_attach, | |
475 | (void (*) (int)) | |
476 | target_ignore); | |
0d06e24b JM |
477 | de_fault (to_detach, |
478 | (void (*) (char *, int)) | |
479 | target_ignore); | |
6ad8ae5c DJ |
480 | de_fault (to_disconnect, |
481 | (void (*) (char *, int)) | |
482 | tcomplain); | |
0d06e24b | 483 | de_fault (to_resume, |
39f77062 | 484 | (void (*) (ptid_t, int, enum target_signal)) |
0d06e24b JM |
485 | noprocess); |
486 | de_fault (to_wait, | |
39f77062 | 487 | (ptid_t (*) (ptid_t, struct target_waitstatus *)) |
0d06e24b | 488 | noprocess); |
0d06e24b JM |
489 | de_fault (to_fetch_registers, |
490 | (void (*) (int)) | |
491 | target_ignore); | |
492 | de_fault (to_store_registers, | |
493 | (void (*) (int)) | |
494 | noprocess); | |
495 | de_fault (to_prepare_to_store, | |
496 | (void (*) (void)) | |
497 | noprocess); | |
498 | de_fault (to_xfer_memory, | |
29e57380 | 499 | (int (*) (CORE_ADDR, char *, int, int, struct mem_attrib *, struct target_ops *)) |
0d06e24b JM |
500 | nomemory); |
501 | de_fault (to_files_info, | |
502 | (void (*) (struct target_ops *)) | |
503 | target_ignore); | |
504 | de_fault (to_insert_breakpoint, | |
505 | memory_insert_breakpoint); | |
506 | de_fault (to_remove_breakpoint, | |
507 | memory_remove_breakpoint); | |
ccaa32c7 GS |
508 | de_fault (to_can_use_hw_breakpoint, |
509 | (int (*) (int, int, int)) | |
510 | return_zero); | |
511 | de_fault (to_insert_hw_breakpoint, | |
512 | (int (*) (CORE_ADDR, char *)) | |
513 | return_minus_one); | |
514 | de_fault (to_remove_hw_breakpoint, | |
515 | (int (*) (CORE_ADDR, char *)) | |
516 | return_minus_one); | |
517 | de_fault (to_insert_watchpoint, | |
518 | (int (*) (CORE_ADDR, int, int)) | |
519 | return_minus_one); | |
520 | de_fault (to_remove_watchpoint, | |
521 | (int (*) (CORE_ADDR, int, int)) | |
522 | return_minus_one); | |
523 | de_fault (to_stopped_by_watchpoint, | |
524 | (int (*) (void)) | |
525 | return_zero); | |
526 | de_fault (to_stopped_data_address, | |
527 | (CORE_ADDR (*) (void)) | |
528 | return_zero); | |
529 | de_fault (to_region_size_ok_for_hw_watchpoint, | |
530 | default_region_size_ok_for_hw_watchpoint); | |
0d06e24b JM |
531 | de_fault (to_terminal_init, |
532 | (void (*) (void)) | |
533 | target_ignore); | |
534 | de_fault (to_terminal_inferior, | |
535 | (void (*) (void)) | |
536 | target_ignore); | |
537 | de_fault (to_terminal_ours_for_output, | |
538 | (void (*) (void)) | |
539 | target_ignore); | |
540 | de_fault (to_terminal_ours, | |
541 | (void (*) (void)) | |
542 | target_ignore); | |
a790ad35 SC |
543 | de_fault (to_terminal_save_ours, |
544 | (void (*) (void)) | |
545 | target_ignore); | |
0d06e24b JM |
546 | de_fault (to_terminal_info, |
547 | default_terminal_info); | |
548 | de_fault (to_kill, | |
549 | (void (*) (void)) | |
550 | noprocess); | |
551 | de_fault (to_load, | |
552 | (void (*) (char *, int)) | |
553 | tcomplain); | |
554 | de_fault (to_lookup_symbol, | |
555 | (int (*) (char *, CORE_ADDR *)) | |
556 | nosymbol); | |
557 | de_fault (to_create_inferior, | |
558 | maybe_kill_then_create_inferior); | |
559 | de_fault (to_post_startup_inferior, | |
39f77062 | 560 | (void (*) (ptid_t)) |
0d06e24b JM |
561 | target_ignore); |
562 | de_fault (to_acknowledge_created_inferior, | |
563 | (void (*) (int)) | |
564 | target_ignore); | |
0d06e24b JM |
565 | de_fault (to_insert_fork_catchpoint, |
566 | (int (*) (int)) | |
567 | tcomplain); | |
568 | de_fault (to_remove_fork_catchpoint, | |
569 | (int (*) (int)) | |
570 | tcomplain); | |
571 | de_fault (to_insert_vfork_catchpoint, | |
572 | (int (*) (int)) | |
573 | tcomplain); | |
574 | de_fault (to_remove_vfork_catchpoint, | |
575 | (int (*) (int)) | |
576 | tcomplain); | |
4c9ba7e0 | 577 | de_fault (to_follow_fork, |
6604731b | 578 | (int (*) (int)) |
0d06e24b JM |
579 | target_ignore); |
580 | de_fault (to_insert_exec_catchpoint, | |
581 | (int (*) (int)) | |
582 | tcomplain); | |
583 | de_fault (to_remove_exec_catchpoint, | |
584 | (int (*) (int)) | |
585 | tcomplain); | |
0d06e24b JM |
586 | de_fault (to_reported_exec_events_per_exec_call, |
587 | (int (*) (void)) | |
588 | return_one); | |
0d06e24b JM |
589 | de_fault (to_has_exited, |
590 | (int (*) (int, int, int *)) | |
591 | return_zero); | |
592 | de_fault (to_mourn_inferior, | |
593 | (void (*) (void)) | |
594 | noprocess); | |
595 | de_fault (to_can_run, | |
596 | return_zero); | |
597 | de_fault (to_notice_signals, | |
39f77062 | 598 | (void (*) (ptid_t)) |
0d06e24b JM |
599 | target_ignore); |
600 | de_fault (to_thread_alive, | |
39f77062 | 601 | (int (*) (ptid_t)) |
0d06e24b JM |
602 | return_zero); |
603 | de_fault (to_find_new_threads, | |
604 | (void (*) (void)) | |
605 | target_ignore); | |
606 | de_fault (to_extra_thread_info, | |
607 | (char *(*) (struct thread_info *)) | |
608 | return_zero); | |
609 | de_fault (to_stop, | |
610 | (void (*) (void)) | |
611 | target_ignore); | |
4b8a223f | 612 | current_target.to_xfer_partial = default_xfer_partial; |
0d06e24b | 613 | de_fault (to_rcmd, |
d9fcf2fb | 614 | (void (*) (char *, struct ui_file *)) |
0d06e24b JM |
615 | tcomplain); |
616 | de_fault (to_enable_exception_callback, | |
617 | (struct symtab_and_line * (*) (enum exception_event_kind, int)) | |
618 | nosupport_runtime); | |
619 | de_fault (to_get_current_exception_event, | |
620 | (struct exception_event_record * (*) (void)) | |
621 | nosupport_runtime); | |
622 | de_fault (to_pid_to_exec_file, | |
623 | (char *(*) (int)) | |
624 | return_zero); | |
0d06e24b JM |
625 | de_fault (to_can_async_p, |
626 | (int (*) (void)) | |
627 | return_zero); | |
628 | de_fault (to_is_async_p, | |
629 | (int (*) (void)) | |
630 | return_zero); | |
631 | de_fault (to_async, | |
632 | (void (*) (void (*) (enum inferior_event_type, void*), void*)) | |
633 | tcomplain); | |
c906108c | 634 | #undef de_fault |
c906108c | 635 | |
7998dfc3 AC |
636 | /* Finally, position the target-stack beneath the squashed |
637 | "current_target". That way code looking for a non-inherited | |
638 | target method can quickly and simply find it. */ | |
639 | current_target.beneath = target_stack; | |
c906108c SS |
640 | } |
641 | ||
642 | /* Push a new target type into the stack of the existing target accessors, | |
643 | possibly superseding some of the existing accessors. | |
644 | ||
645 | Result is zero if the pushed target ended up on top of the stack, | |
646 | nonzero if at least one target is on top of it. | |
647 | ||
648 | Rather than allow an empty stack, we always have the dummy target at | |
649 | the bottom stratum, so we can call the function vectors without | |
650 | checking them. */ | |
651 | ||
652 | int | |
fba45db2 | 653 | push_target (struct target_ops *t) |
c906108c | 654 | { |
258b763a | 655 | struct target_ops **cur; |
c906108c SS |
656 | |
657 | /* Check magic number. If wrong, it probably means someone changed | |
658 | the struct definition, but not all the places that initialize one. */ | |
659 | if (t->to_magic != OPS_MAGIC) | |
660 | { | |
c5aa993b JM |
661 | fprintf_unfiltered (gdb_stderr, |
662 | "Magic number of %s target struct wrong\n", | |
663 | t->to_shortname); | |
e1e9e218 | 664 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
c906108c SS |
665 | } |
666 | ||
258b763a AC |
667 | /* Find the proper stratum to install this target in. */ |
668 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
c906108c | 669 | { |
258b763a | 670 | if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum) |
c906108c SS |
671 | break; |
672 | } | |
673 | ||
258b763a AC |
674 | /* If there's already targets at this stratum, remove them. */ |
675 | /* FIXME: cagney/2003-10-15: I think this should be poping all | |
676 | targets to CUR, and not just those at this stratum level. */ | |
677 | while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum) | |
678 | { | |
679 | /* There's already something at this stratum level. Close it, | |
680 | and un-hook it from the stack. */ | |
681 | struct target_ops *tmp = (*cur); | |
682 | (*cur) = (*cur)->beneath; | |
683 | tmp->beneath = NULL; | |
f1c07ab0 | 684 | target_close (tmp, 0); |
258b763a | 685 | } |
c906108c SS |
686 | |
687 | /* We have removed all targets in our stratum, now add the new one. */ | |
258b763a AC |
688 | t->beneath = (*cur); |
689 | (*cur) = t; | |
c906108c SS |
690 | |
691 | update_current_target (); | |
692 | ||
c906108c SS |
693 | if (targetdebug) |
694 | setup_target_debug (); | |
c906108c | 695 | |
258b763a AC |
696 | /* Not on top? */ |
697 | return (t != target_stack); | |
c906108c SS |
698 | } |
699 | ||
700 | /* Remove a target_ops vector from the stack, wherever it may be. | |
701 | Return how many times it was removed (0 or 1). */ | |
702 | ||
703 | int | |
fba45db2 | 704 | unpush_target (struct target_ops *t) |
c906108c | 705 | { |
258b763a AC |
706 | struct target_ops **cur; |
707 | struct target_ops *tmp; | |
c906108c | 708 | |
c906108c SS |
709 | /* Look for the specified target. Note that we assume that a target |
710 | can only occur once in the target stack. */ | |
711 | ||
258b763a AC |
712 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) |
713 | { | |
714 | if ((*cur) == t) | |
715 | break; | |
716 | } | |
c906108c | 717 | |
258b763a | 718 | if ((*cur) == NULL) |
c906108c SS |
719 | return 0; /* Didn't find target_ops, quit now */ |
720 | ||
5269965e AC |
721 | /* NOTE: cagney/2003-12-06: In '94 the close call was made |
722 | unconditional by moving it to before the above check that the | |
723 | target was in the target stack (something about "Change the way | |
724 | pushing and popping of targets work to support target overlays | |
725 | and inheritance"). This doesn't make much sense - only open | |
726 | targets should be closed. */ | |
727 | target_close (t, 0); | |
728 | ||
c906108c | 729 | /* Unchain the target */ |
258b763a AC |
730 | tmp = (*cur); |
731 | (*cur) = (*cur)->beneath; | |
732 | tmp->beneath = NULL; | |
c906108c SS |
733 | |
734 | update_current_target (); | |
c906108c SS |
735 | |
736 | return 1; | |
737 | } | |
738 | ||
739 | void | |
fba45db2 | 740 | pop_target (void) |
c906108c | 741 | { |
f1c07ab0 | 742 | target_close (¤t_target, 0); /* Let it clean up */ |
258b763a | 743 | if (unpush_target (target_stack) == 1) |
c906108c SS |
744 | return; |
745 | ||
c5aa993b JM |
746 | fprintf_unfiltered (gdb_stderr, |
747 | "pop_target couldn't find target %s\n", | |
748 | current_target.to_shortname); | |
e1e9e218 | 749 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
c906108c SS |
750 | } |
751 | ||
752 | #undef MIN | |
753 | #define MIN(A, B) (((A) <= (B)) ? (A) : (B)) | |
754 | ||
755 | /* target_read_string -- read a null terminated string, up to LEN bytes, | |
756 | from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful. | |
757 | Set *STRING to a pointer to malloc'd memory containing the data; the caller | |
758 | is responsible for freeing it. Return the number of bytes successfully | |
759 | read. */ | |
760 | ||
761 | int | |
fba45db2 | 762 | target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop) |
c906108c SS |
763 | { |
764 | int tlen, origlen, offset, i; | |
765 | char buf[4]; | |
766 | int errcode = 0; | |
767 | char *buffer; | |
768 | int buffer_allocated; | |
769 | char *bufptr; | |
770 | unsigned int nbytes_read = 0; | |
771 | ||
772 | /* Small for testing. */ | |
773 | buffer_allocated = 4; | |
774 | buffer = xmalloc (buffer_allocated); | |
775 | bufptr = buffer; | |
776 | ||
777 | origlen = len; | |
778 | ||
779 | while (len > 0) | |
780 | { | |
781 | tlen = MIN (len, 4 - (memaddr & 3)); | |
782 | offset = memaddr & 3; | |
783 | ||
b8eb5af0 | 784 | errcode = target_read_memory (memaddr & ~3, buf, 4); |
c906108c SS |
785 | if (errcode != 0) |
786 | { | |
787 | /* The transfer request might have crossed the boundary to an | |
788 | unallocated region of memory. Retry the transfer, requesting | |
789 | a single byte. */ | |
790 | tlen = 1; | |
791 | offset = 0; | |
b8eb5af0 | 792 | errcode = target_read_memory (memaddr, buf, 1); |
c906108c SS |
793 | if (errcode != 0) |
794 | goto done; | |
795 | } | |
796 | ||
797 | if (bufptr - buffer + tlen > buffer_allocated) | |
798 | { | |
799 | unsigned int bytes; | |
800 | bytes = bufptr - buffer; | |
801 | buffer_allocated *= 2; | |
802 | buffer = xrealloc (buffer, buffer_allocated); | |
803 | bufptr = buffer + bytes; | |
804 | } | |
805 | ||
806 | for (i = 0; i < tlen; i++) | |
807 | { | |
808 | *bufptr++ = buf[i + offset]; | |
809 | if (buf[i + offset] == '\000') | |
810 | { | |
811 | nbytes_read += i + 1; | |
812 | goto done; | |
813 | } | |
814 | } | |
815 | ||
816 | memaddr += tlen; | |
817 | len -= tlen; | |
818 | nbytes_read += tlen; | |
819 | } | |
c5aa993b | 820 | done: |
c906108c SS |
821 | if (errnop != NULL) |
822 | *errnop = errcode; | |
823 | if (string != NULL) | |
824 | *string = buffer; | |
825 | return nbytes_read; | |
826 | } | |
827 | ||
8db32d44 AC |
828 | /* Find a section containing ADDR. */ |
829 | struct section_table * | |
830 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) | |
831 | { | |
832 | struct section_table *secp; | |
833 | for (secp = target->to_sections; | |
834 | secp < target->to_sections_end; | |
835 | secp++) | |
836 | { | |
837 | if (addr >= secp->addr && addr < secp->endaddr) | |
838 | return secp; | |
839 | } | |
840 | return NULL; | |
841 | } | |
842 | ||
0779438d AC |
843 | /* Return non-zero when the target vector has supplied an xfer_partial |
844 | method and it, rather than xfer_memory, should be used. */ | |
845 | static int | |
846 | target_xfer_partial_p (void) | |
847 | { | |
848 | return (target_stack != NULL | |
849 | && target_stack->to_xfer_partial != default_xfer_partial); | |
850 | } | |
851 | ||
27394598 AC |
852 | static LONGEST |
853 | target_xfer_partial (struct target_ops *ops, | |
854 | enum target_object object, const char *annex, | |
855 | void *readbuf, const void *writebuf, | |
856 | ULONGEST offset, LONGEST len) | |
857 | { | |
858 | LONGEST retval; | |
859 | ||
860 | gdb_assert (ops->to_xfer_partial != NULL); | |
861 | retval = ops->to_xfer_partial (ops, object, annex, readbuf, writebuf, | |
862 | offset, len); | |
863 | if (targetdebug) | |
864 | { | |
865 | const unsigned char *myaddr = NULL; | |
866 | ||
867 | fprintf_unfiltered (gdb_stdlog, | |
868 | "%s:target_xfer_partial (%d, %s, 0x%lx, 0x%lx, 0x%s, %s) = %s", | |
869 | ops->to_shortname, | |
870 | (int) object, | |
871 | (annex ? annex : "(null)"), | |
872 | (long) readbuf, (long) writebuf, | |
873 | paddr_nz (offset), paddr_d (len), paddr_d (retval)); | |
874 | ||
875 | if (readbuf) | |
876 | myaddr = readbuf; | |
877 | if (writebuf) | |
878 | myaddr = writebuf; | |
879 | if (retval > 0 && myaddr != NULL) | |
880 | { | |
881 | int i; | |
882 | ||
883 | fputs_unfiltered (", bytes =", gdb_stdlog); | |
884 | for (i = 0; i < retval; i++) | |
885 | { | |
886 | if ((((long) &(myaddr[i])) & 0xf) == 0) | |
887 | { | |
888 | if (targetdebug < 2 && i > 0) | |
889 | { | |
890 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
891 | break; | |
892 | } | |
893 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
894 | } | |
895 | ||
896 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); | |
897 | } | |
898 | } | |
899 | ||
900 | fputc_unfiltered ('\n', gdb_stdlog); | |
901 | } | |
902 | return retval; | |
903 | } | |
904 | ||
0779438d AC |
905 | /* Attempt a transfer all LEN bytes starting at OFFSET between the |
906 | inferior's KIND:ANNEX space and GDB's READBUF/WRITEBUF buffer. If | |
907 | the transfer succeeds, return zero, otherwize the host ERRNO is | |
908 | returned. | |
909 | ||
910 | The inferior is formed from several layers. In the case of | |
911 | corefiles, inf-corefile is layered above inf-exec and a request for | |
912 | text (corefiles do not include text pages) will be first sent to | |
913 | the core-stratum, fail, and then sent to the object-file where it | |
914 | will succeed. | |
915 | ||
916 | NOTE: cagney/2004-09-30: | |
917 | ||
918 | The old code tried to use four separate mechanisms for mapping an | |
919 | object:offset:len tuple onto an inferior and its address space: the | |
920 | target stack; the inferior's TO_SECTIONS; solib's SO_LIST; | |
921 | overlays. | |
922 | ||
923 | This is stupid. | |
924 | ||
925 | The code below is instead using a single mechanism (currently | |
926 | strata). If that mechanism proves insufficient then re-factor it | |
927 | implementing another singluar mechanism (for instance, a generic | |
928 | object:annex onto inferior:object:annex say). */ | |
929 | ||
cb85a953 | 930 | static LONGEST |
0779438d | 931 | xfer_using_stratum (enum target_object object, const char *annex, |
cb85a953 | 932 | ULONGEST offset, LONGEST len, void *readbuf, |
0779438d AC |
933 | const void *writebuf) |
934 | { | |
935 | LONGEST xfered; | |
936 | struct target_ops *target; | |
937 | ||
938 | /* Always successful. */ | |
939 | if (len == 0) | |
940 | return 0; | |
941 | /* Never successful. */ | |
942 | if (target_stack == NULL) | |
943 | return EIO; | |
944 | ||
945 | target = target_stack; | |
946 | while (1) | |
947 | { | |
27394598 | 948 | xfered = target_xfer_partial (target, object, annex, |
cb85a953 | 949 | readbuf, writebuf, offset, len); |
0779438d AC |
950 | if (xfered > 0) |
951 | { | |
952 | /* The partial xfer succeeded, update the counts, check that | |
953 | the xfer hasn't finished and if it hasn't set things up | |
954 | for the next round. */ | |
955 | len -= xfered; | |
956 | if (len <= 0) | |
957 | return 0; | |
cb85a953 AC |
958 | offset += xfered; |
959 | if (readbuf != NULL) | |
960 | readbuf = (bfd_byte *) readbuf + xfered; | |
961 | if (writebuf != NULL) | |
962 | writebuf = (bfd_byte *) writebuf + xfered; | |
0779438d AC |
963 | target = target_stack; |
964 | } | |
965 | else if (xfered < 0) | |
966 | { | |
967 | /* Something totally screwed up, abandon the attempt to | |
968 | xfer. */ | |
969 | if (errno) | |
970 | return errno; | |
971 | else | |
972 | return EIO; | |
973 | } | |
974 | else | |
975 | { | |
976 | /* This "stratum" didn't work, try the next one down. */ | |
977 | target = target->beneath; | |
978 | if (target == NULL) | |
979 | return EIO; | |
980 | } | |
981 | } | |
982 | } | |
983 | ||
c906108c SS |
984 | /* Read LEN bytes of target memory at address MEMADDR, placing the results in |
985 | GDB's memory at MYADDR. Returns either 0 for success or an errno value | |
986 | if any error occurs. | |
987 | ||
988 | If an error occurs, no guarantee is made about the contents of the data at | |
989 | MYADDR. In particular, the caller should not depend upon partial reads | |
990 | filling the buffer with good data. There is no way for the caller to know | |
991 | how much good data might have been transfered anyway. Callers that can | |
992 | deal with partial reads should call target_read_memory_partial. */ | |
993 | ||
994 | int | |
fba45db2 | 995 | target_read_memory (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 996 | { |
0779438d AC |
997 | if (target_xfer_partial_p ()) |
998 | return xfer_using_stratum (TARGET_OBJECT_MEMORY, NULL, | |
999 | memaddr, len, myaddr, NULL); | |
1000 | else | |
1001 | return target_xfer_memory (memaddr, myaddr, len, 0); | |
c906108c SS |
1002 | } |
1003 | ||
c906108c | 1004 | int |
fba45db2 | 1005 | target_write_memory (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 1006 | { |
0779438d AC |
1007 | if (target_xfer_partial_p ()) |
1008 | return xfer_using_stratum (TARGET_OBJECT_MEMORY, NULL, | |
1009 | memaddr, len, NULL, myaddr); | |
1010 | else | |
1011 | return target_xfer_memory (memaddr, myaddr, len, 1); | |
c906108c | 1012 | } |
c5aa993b | 1013 | |
3a11626d MS |
1014 | static int trust_readonly = 0; |
1015 | ||
67e0617e C |
1016 | /* Move memory to or from the targets. The top target gets priority; |
1017 | if it cannot handle it, it is offered to the next one down, etc. | |
c906108c | 1018 | |
67e0617e | 1019 | Result is -1 on error, or the number of bytes transfered. */ |
c906108c | 1020 | |
4930751a | 1021 | int |
29e57380 C |
1022 | do_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
1023 | struct mem_attrib *attrib) | |
c906108c | 1024 | { |
c906108c | 1025 | int res; |
4930751a | 1026 | int done = 0; |
c906108c | 1027 | struct target_ops *t; |
c906108c SS |
1028 | |
1029 | /* Zero length requests are ok and require no work. */ | |
1030 | if (len == 0) | |
1031 | return 0; | |
1032 | ||
c906108c SS |
1033 | /* to_xfer_memory is not guaranteed to set errno, even when it returns |
1034 | 0. */ | |
1035 | errno = 0; | |
1036 | ||
3a11626d MS |
1037 | if (!write && trust_readonly) |
1038 | { | |
8db32d44 | 1039 | struct section_table *secp; |
2ceb85d0 BE |
1040 | /* User-settable option, "trust-readonly-sections". If true, |
1041 | then memory from any SEC_READONLY bfd section may be read | |
8db32d44 AC |
1042 | directly from the bfd file. */ |
1043 | secp = target_section_by_addr (¤t_target, memaddr); | |
1044 | if (secp != NULL | |
1045 | && (bfd_get_section_flags (secp->bfd, secp->the_bfd_section) | |
1046 | & SEC_READONLY)) | |
1047 | return xfer_memory (memaddr, myaddr, len, 0, attrib, ¤t_target); | |
3a11626d MS |
1048 | } |
1049 | ||
67e0617e | 1050 | /* The quick case is that the top target can handle the transfer. */ |
c906108c | 1051 | res = current_target.to_xfer_memory |
29e57380 | 1052 | (memaddr, myaddr, len, write, attrib, ¤t_target); |
c906108c | 1053 | |
67e0617e C |
1054 | /* If res <= 0 then we call it again in the loop. Ah well. */ |
1055 | if (res <= 0) | |
c906108c | 1056 | { |
258b763a | 1057 | for (t = target_stack; t != NULL; t = t->beneath) |
c906108c | 1058 | { |
c906108c SS |
1059 | if (!t->to_has_memory) |
1060 | continue; | |
1061 | ||
29e57380 | 1062 | res = t->to_xfer_memory (memaddr, myaddr, len, write, attrib, t); |
c906108c SS |
1063 | if (res > 0) |
1064 | break; /* Handled all or part of xfer */ | |
1065 | if (t->to_has_all_memory) | |
1066 | break; | |
1067 | } | |
1068 | ||
4930751a | 1069 | if (res <= 0) |
67e0617e | 1070 | return -1; |
4930751a | 1071 | } |
67e0617e C |
1072 | |
1073 | return res; | |
4930751a C |
1074 | } |
1075 | ||
67e0617e C |
1076 | |
1077 | /* Perform a memory transfer. Iterate until the entire region has | |
1078 | been transfered. | |
1079 | ||
1080 | Result is 0 or errno value. */ | |
1081 | ||
4930751a C |
1082 | static int |
1083 | target_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write) | |
1084 | { | |
1085 | int res; | |
29e57380 C |
1086 | int reg_len; |
1087 | struct mem_region *region; | |
4930751a C |
1088 | |
1089 | /* Zero length requests are ok and require no work. */ | |
1090 | if (len == 0) | |
1091 | { | |
1092 | return 0; | |
1093 | } | |
1094 | ||
1095 | while (len > 0) | |
1096 | { | |
29e57380 C |
1097 | region = lookup_mem_region(memaddr); |
1098 | if (memaddr + len < region->hi) | |
1099 | reg_len = len; | |
1100 | else | |
1101 | reg_len = region->hi - memaddr; | |
1102 | ||
1103 | switch (region->attrib.mode) | |
c906108c | 1104 | { |
29e57380 C |
1105 | case MEM_RO: |
1106 | if (write) | |
1107 | return EIO; | |
1108 | break; | |
1109 | ||
1110 | case MEM_WO: | |
c906108c | 1111 | if (!write) |
c906108c | 1112 | return EIO; |
29e57380 | 1113 | break; |
c906108c | 1114 | } |
4930751a | 1115 | |
29e57380 C |
1116 | while (reg_len > 0) |
1117 | { | |
1118 | if (region->attrib.cache) | |
8add0441 | 1119 | res = dcache_xfer_memory (target_dcache, memaddr, myaddr, |
29e57380 C |
1120 | reg_len, write); |
1121 | else | |
8add0441 | 1122 | res = do_xfer_memory (memaddr, myaddr, reg_len, write, |
29e57380 C |
1123 | ®ion->attrib); |
1124 | ||
1125 | if (res <= 0) | |
1126 | { | |
1127 | /* If this address is for nonexistent memory, read zeros | |
1128 | if reading, or do nothing if writing. Return | |
1129 | error. */ | |
1130 | if (!write) | |
1131 | memset (myaddr, 0, len); | |
1132 | if (errno == 0) | |
1133 | return EIO; | |
1134 | else | |
1135 | return errno; | |
1136 | } | |
1137 | ||
1138 | memaddr += res; | |
1139 | myaddr += res; | |
1140 | len -= res; | |
1141 | reg_len -= res; | |
1142 | } | |
c906108c | 1143 | } |
4930751a | 1144 | |
c906108c SS |
1145 | return 0; /* We managed to cover it all somehow. */ |
1146 | } | |
1147 | ||
1148 | ||
67e0617e C |
1149 | /* Perform a partial memory transfer. |
1150 | ||
1151 | Result is -1 on error, or the number of bytes transfered. */ | |
917317f4 JM |
1152 | |
1153 | static int | |
4930751a | 1154 | target_xfer_memory_partial (CORE_ADDR memaddr, char *myaddr, int len, |
917317f4 JM |
1155 | int write_p, int *err) |
1156 | { | |
1157 | int res; | |
29e57380 C |
1158 | int reg_len; |
1159 | struct mem_region *region; | |
917317f4 JM |
1160 | |
1161 | /* Zero length requests are ok and require no work. */ | |
1162 | if (len == 0) | |
1163 | { | |
1164 | *err = 0; | |
1165 | return 0; | |
1166 | } | |
1167 | ||
29e57380 C |
1168 | region = lookup_mem_region(memaddr); |
1169 | if (memaddr + len < region->hi) | |
1170 | reg_len = len; | |
1171 | else | |
1172 | reg_len = region->hi - memaddr; | |
1173 | ||
1174 | switch (region->attrib.mode) | |
1175 | { | |
1176 | case MEM_RO: | |
1177 | if (write_p) | |
1178 | { | |
1179 | *err = EIO; | |
873406a6 | 1180 | return -1; |
29e57380 C |
1181 | } |
1182 | break; | |
1183 | ||
1184 | case MEM_WO: | |
1185 | if (write_p) | |
1186 | { | |
1187 | *err = EIO; | |
873406a6 | 1188 | return -1; |
29e57380 C |
1189 | } |
1190 | break; | |
1191 | } | |
1192 | ||
1193 | if (region->attrib.cache) | |
1194 | res = dcache_xfer_memory (target_dcache, memaddr, myaddr, | |
1195 | reg_len, write_p); | |
1196 | else | |
1197 | res = do_xfer_memory (memaddr, myaddr, reg_len, write_p, | |
1198 | ®ion->attrib); | |
1199 | ||
4930751a | 1200 | if (res <= 0) |
917317f4 | 1201 | { |
4930751a C |
1202 | if (errno != 0) |
1203 | *err = errno; | |
1204 | else | |
1205 | *err = EIO; | |
917317f4 | 1206 | |
4930751a | 1207 | return -1; |
917317f4 JM |
1208 | } |
1209 | ||
4930751a | 1210 | *err = 0; |
67e0617e | 1211 | return res; |
917317f4 JM |
1212 | } |
1213 | ||
1214 | int | |
1215 | target_read_memory_partial (CORE_ADDR memaddr, char *buf, int len, int *err) | |
1216 | { | |
0779438d | 1217 | if (target_xfer_partial_p ()) |
27394598 AC |
1218 | return target_xfer_partial (target_stack, TARGET_OBJECT_MEMORY, NULL, |
1219 | buf, NULL, memaddr, len); | |
0779438d AC |
1220 | else |
1221 | return target_xfer_memory_partial (memaddr, buf, len, 0, err); | |
917317f4 JM |
1222 | } |
1223 | ||
1224 | int | |
1225 | target_write_memory_partial (CORE_ADDR memaddr, char *buf, int len, int *err) | |
1226 | { | |
0779438d | 1227 | if (target_xfer_partial_p ()) |
27394598 AC |
1228 | return target_xfer_partial (target_stack, TARGET_OBJECT_MEMORY, NULL, |
1229 | NULL, buf, memaddr, len); | |
0779438d AC |
1230 | else |
1231 | return target_xfer_memory_partial (memaddr, buf, len, 1, err); | |
917317f4 JM |
1232 | } |
1233 | ||
1e3ff5ad AC |
1234 | /* More generic transfers. */ |
1235 | ||
0088c768 | 1236 | static LONGEST |
8aa91c1e AC |
1237 | default_xfer_partial (struct target_ops *ops, enum target_object object, |
1238 | const char *annex, void *readbuf, | |
1239 | const void *writebuf, ULONGEST offset, LONGEST len) | |
0088c768 AC |
1240 | { |
1241 | if (object == TARGET_OBJECT_MEMORY | |
1242 | && ops->to_xfer_memory != NULL) | |
1243 | /* If available, fall back to the target's "to_xfer_memory" | |
1244 | method. */ | |
1245 | { | |
4b8a223f | 1246 | int xfered = -1; |
0088c768 | 1247 | errno = 0; |
4b8a223f AC |
1248 | if (writebuf != NULL) |
1249 | { | |
1250 | void *buffer = xmalloc (len); | |
1251 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |
1252 | memcpy (buffer, writebuf, len); | |
1253 | xfered = ops->to_xfer_memory (offset, buffer, len, 1/*write*/, NULL, | |
1254 | ops); | |
1255 | do_cleanups (cleanup); | |
1256 | } | |
1257 | if (readbuf != NULL) | |
1258 | xfered = ops->to_xfer_memory (offset, readbuf, len, 0/*read*/, NULL, | |
0088c768 | 1259 | ops); |
0088c768 AC |
1260 | if (xfered > 0) |
1261 | return xfered; | |
1262 | else if (xfered == 0 && errno == 0) | |
1263 | /* "to_xfer_memory" uses 0, cross checked against ERRNO as one | |
1264 | indication of an error. */ | |
1265 | return 0; | |
1266 | else | |
1267 | return -1; | |
1268 | } | |
1269 | else if (ops->beneath != NULL) | |
27394598 AC |
1270 | return target_xfer_partial (ops->beneath, object, annex, |
1271 | readbuf, writebuf, offset, len); | |
0088c768 AC |
1272 | else |
1273 | return -1; | |
1274 | } | |
1275 | ||
1276 | /* Target vector read/write partial wrapper functions. | |
1277 | ||
1278 | NOTE: cagney/2003-10-21: I wonder if having "to_xfer_partial | |
1279 | (inbuf, outbuf)", instead of separate read/write methods, make life | |
1280 | easier. */ | |
1281 | ||
1e3ff5ad AC |
1282 | LONGEST |
1283 | target_read_partial (struct target_ops *ops, | |
1284 | enum target_object object, | |
1285 | const char *annex, void *buf, | |
1286 | ULONGEST offset, LONGEST len) | |
1287 | { | |
27394598 | 1288 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len); |
1e3ff5ad AC |
1289 | } |
1290 | ||
1291 | LONGEST | |
1292 | target_write_partial (struct target_ops *ops, | |
1293 | enum target_object object, | |
1294 | const char *annex, const void *buf, | |
1295 | ULONGEST offset, LONGEST len) | |
1296 | { | |
27394598 | 1297 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len); |
1e3ff5ad AC |
1298 | } |
1299 | ||
1300 | /* Wrappers to perform the full transfer. */ | |
1301 | LONGEST | |
1302 | target_read (struct target_ops *ops, | |
1303 | enum target_object object, | |
1304 | const char *annex, void *buf, | |
1305 | ULONGEST offset, LONGEST len) | |
1306 | { | |
1307 | LONGEST xfered = 0; | |
1308 | while (xfered < len) | |
1309 | { | |
0088c768 AC |
1310 | LONGEST xfer = target_read_partial (ops, object, annex, |
1311 | (bfd_byte *) buf + xfered, | |
1312 | offset + xfered, len - xfered); | |
1e3ff5ad | 1313 | /* Call an observer, notifying them of the xfer progress? */ |
0088c768 AC |
1314 | if (xfer <= 0) |
1315 | /* Call memory_error? */ | |
1316 | return -1; | |
1e3ff5ad AC |
1317 | xfered += xfer; |
1318 | QUIT; | |
1319 | } | |
1320 | return len; | |
1321 | } | |
1322 | ||
1323 | LONGEST | |
1324 | target_write (struct target_ops *ops, | |
1325 | enum target_object object, | |
1326 | const char *annex, const void *buf, | |
1327 | ULONGEST offset, LONGEST len) | |
1328 | { | |
1329 | LONGEST xfered = 0; | |
1330 | while (xfered < len) | |
1331 | { | |
1332 | LONGEST xfer = target_write_partial (ops, object, annex, | |
1333 | (bfd_byte *) buf + xfered, | |
1334 | offset + xfered, len - xfered); | |
1335 | /* Call an observer, notifying them of the xfer progress? */ | |
0088c768 AC |
1336 | if (xfer <= 0) |
1337 | /* Call memory_error? */ | |
1338 | return -1; | |
1e3ff5ad AC |
1339 | xfered += xfer; |
1340 | QUIT; | |
1341 | } | |
1342 | return len; | |
1343 | } | |
1344 | ||
b6591e8b AC |
1345 | /* Memory transfer methods. */ |
1346 | ||
1347 | void | |
1348 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, void *buf, | |
1349 | LONGEST len) | |
1350 | { | |
1351 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, buf, addr, len) | |
1352 | != len) | |
1353 | memory_error (EIO, addr); | |
1354 | } | |
1355 | ||
1356 | ULONGEST | |
1357 | get_target_memory_unsigned (struct target_ops *ops, | |
1358 | CORE_ADDR addr, int len) | |
1359 | { | |
1360 | char buf[sizeof (ULONGEST)]; | |
1361 | ||
1362 | gdb_assert (len <= sizeof (buf)); | |
1363 | get_target_memory (ops, addr, buf, len); | |
1364 | return extract_unsigned_integer (buf, len); | |
1365 | } | |
1366 | ||
c906108c | 1367 | static void |
fba45db2 | 1368 | target_info (char *args, int from_tty) |
c906108c SS |
1369 | { |
1370 | struct target_ops *t; | |
c906108c | 1371 | int has_all_mem = 0; |
c5aa993b | 1372 | |
c906108c SS |
1373 | if (symfile_objfile != NULL) |
1374 | printf_unfiltered ("Symbols from \"%s\".\n", symfile_objfile->name); | |
1375 | ||
258b763a | 1376 | for (t = target_stack; t != NULL; t = t->beneath) |
c906108c | 1377 | { |
c906108c SS |
1378 | if (!t->to_has_memory) |
1379 | continue; | |
1380 | ||
c5aa993b | 1381 | if ((int) (t->to_stratum) <= (int) dummy_stratum) |
c906108c SS |
1382 | continue; |
1383 | if (has_all_mem) | |
c5aa993b JM |
1384 | printf_unfiltered ("\tWhile running this, GDB does not access memory from...\n"); |
1385 | printf_unfiltered ("%s:\n", t->to_longname); | |
1386 | (t->to_files_info) (t); | |
c906108c SS |
1387 | has_all_mem = t->to_has_all_memory; |
1388 | } | |
1389 | } | |
1390 | ||
1391 | /* This is to be called by the open routine before it does | |
1392 | anything. */ | |
1393 | ||
1394 | void | |
fba45db2 | 1395 | target_preopen (int from_tty) |
c906108c | 1396 | { |
c5aa993b | 1397 | dont_repeat (); |
c906108c SS |
1398 | |
1399 | if (target_has_execution) | |
c5aa993b | 1400 | { |
adf40b2e JM |
1401 | if (!from_tty |
1402 | || query ("A program is being debugged already. Kill it? ")) | |
c5aa993b | 1403 | target_kill (); |
c906108c | 1404 | else |
c5aa993b | 1405 | error ("Program not killed."); |
c906108c SS |
1406 | } |
1407 | ||
1408 | /* Calling target_kill may remove the target from the stack. But if | |
1409 | it doesn't (which seems like a win for UDI), remove it now. */ | |
1410 | ||
1411 | if (target_has_execution) | |
1412 | pop_target (); | |
1413 | } | |
1414 | ||
1415 | /* Detach a target after doing deferred register stores. */ | |
1416 | ||
1417 | void | |
fba45db2 | 1418 | target_detach (char *args, int from_tty) |
c906108c | 1419 | { |
c906108c SS |
1420 | (current_target.to_detach) (args, from_tty); |
1421 | } | |
1422 | ||
6ad8ae5c DJ |
1423 | void |
1424 | target_disconnect (char *args, int from_tty) | |
1425 | { | |
6ad8ae5c DJ |
1426 | (current_target.to_disconnect) (args, from_tty); |
1427 | } | |
1428 | ||
c906108c | 1429 | void |
fba45db2 | 1430 | target_link (char *modname, CORE_ADDR *t_reloc) |
c906108c | 1431 | { |
cb137aa5 | 1432 | if (DEPRECATED_STREQ (current_target.to_shortname, "rombug")) |
c906108c SS |
1433 | { |
1434 | (current_target.to_lookup_symbol) (modname, t_reloc); | |
1435 | if (*t_reloc == 0) | |
c5aa993b | 1436 | error ("Unable to link to %s and get relocation in rombug", modname); |
c906108c SS |
1437 | } |
1438 | else | |
2acceee2 | 1439 | *t_reloc = (CORE_ADDR) -1; |
c906108c SS |
1440 | } |
1441 | ||
ed9a39eb JM |
1442 | int |
1443 | target_async_mask (int mask) | |
1444 | { | |
1445 | int saved_async_masked_status = target_async_mask_value; | |
1446 | target_async_mask_value = mask; | |
1447 | return saved_async_masked_status; | |
1448 | } | |
1449 | ||
c906108c SS |
1450 | /* Look through the list of possible targets for a target that can |
1451 | execute a run or attach command without any other data. This is | |
1452 | used to locate the default process stratum. | |
1453 | ||
1454 | Result is always valid (error() is called for errors). */ | |
1455 | ||
1456 | static struct target_ops * | |
fba45db2 | 1457 | find_default_run_target (char *do_mesg) |
c906108c SS |
1458 | { |
1459 | struct target_ops **t; | |
1460 | struct target_ops *runable = NULL; | |
1461 | int count; | |
1462 | ||
1463 | count = 0; | |
1464 | ||
1465 | for (t = target_structs; t < target_structs + target_struct_size; | |
1466 | ++t) | |
1467 | { | |
c5aa993b | 1468 | if ((*t)->to_can_run && target_can_run (*t)) |
c906108c SS |
1469 | { |
1470 | runable = *t; | |
1471 | ++count; | |
1472 | } | |
1473 | } | |
1474 | ||
1475 | if (count != 1) | |
1476 | error ("Don't know how to %s. Try \"help target\".", do_mesg); | |
1477 | ||
1478 | return runable; | |
1479 | } | |
1480 | ||
1481 | void | |
fba45db2 | 1482 | find_default_attach (char *args, int from_tty) |
c906108c SS |
1483 | { |
1484 | struct target_ops *t; | |
1485 | ||
c5aa993b | 1486 | t = find_default_run_target ("attach"); |
c906108c SS |
1487 | (t->to_attach) (args, from_tty); |
1488 | return; | |
1489 | } | |
1490 | ||
c906108c | 1491 | void |
c27cda74 AC |
1492 | find_default_create_inferior (char *exec_file, char *allargs, char **env, |
1493 | int from_tty) | |
c906108c SS |
1494 | { |
1495 | struct target_ops *t; | |
1496 | ||
c5aa993b | 1497 | t = find_default_run_target ("run"); |
c27cda74 | 1498 | (t->to_create_inferior) (exec_file, allargs, env, from_tty); |
c906108c SS |
1499 | return; |
1500 | } | |
1501 | ||
ccaa32c7 GS |
1502 | static int |
1503 | default_region_size_ok_for_hw_watchpoint (int byte_count) | |
1504 | { | |
437b434f | 1505 | return (byte_count <= TYPE_LENGTH (builtin_type_void_data_ptr)); |
ccaa32c7 GS |
1506 | } |
1507 | ||
c906108c | 1508 | static int |
fba45db2 | 1509 | return_zero (void) |
c906108c SS |
1510 | { |
1511 | return 0; | |
1512 | } | |
1513 | ||
1514 | static int | |
fba45db2 | 1515 | return_one (void) |
c906108c SS |
1516 | { |
1517 | return 1; | |
1518 | } | |
1519 | ||
ccaa32c7 GS |
1520 | static int |
1521 | return_minus_one (void) | |
1522 | { | |
1523 | return -1; | |
1524 | } | |
1525 | ||
6426a772 JM |
1526 | /* |
1527 | * Resize the to_sections pointer. Also make sure that anyone that | |
1528 | * was holding on to an old value of it gets updated. | |
1529 | * Returns the old size. | |
1530 | */ | |
1531 | ||
1532 | int | |
1533 | target_resize_to_sections (struct target_ops *target, int num_added) | |
1534 | { | |
1535 | struct target_ops **t; | |
1536 | struct section_table *old_value; | |
1537 | int old_count; | |
1538 | ||
1539 | old_value = target->to_sections; | |
1540 | ||
1541 | if (target->to_sections) | |
1542 | { | |
1543 | old_count = target->to_sections_end - target->to_sections; | |
1544 | target->to_sections = (struct section_table *) | |
1545 | xrealloc ((char *) target->to_sections, | |
1546 | (sizeof (struct section_table)) * (num_added + old_count)); | |
1547 | } | |
1548 | else | |
1549 | { | |
1550 | old_count = 0; | |
1551 | target->to_sections = (struct section_table *) | |
1552 | xmalloc ((sizeof (struct section_table)) * num_added); | |
1553 | } | |
1554 | target->to_sections_end = target->to_sections + (num_added + old_count); | |
1555 | ||
1556 | /* Check to see if anyone else was pointing to this structure. | |
1557 | If old_value was null, then no one was. */ | |
1558 | ||
1559 | if (old_value) | |
1560 | { | |
1561 | for (t = target_structs; t < target_structs + target_struct_size; | |
1562 | ++t) | |
1563 | { | |
1564 | if ((*t)->to_sections == old_value) | |
1565 | { | |
1566 | (*t)->to_sections = target->to_sections; | |
1567 | (*t)->to_sections_end = target->to_sections_end; | |
1568 | } | |
1569 | } | |
e354df01 NW |
1570 | /* There is a flattened view of the target stack in current_target, |
1571 | so its to_sections pointer might also need updating. */ | |
1572 | if (current_target.to_sections == old_value) | |
1573 | { | |
1574 | current_target.to_sections = target->to_sections; | |
1575 | current_target.to_sections_end = target->to_sections_end; | |
1576 | } | |
6426a772 JM |
1577 | } |
1578 | ||
1579 | return old_count; | |
1580 | ||
1581 | } | |
1582 | ||
07cd4b97 JB |
1583 | /* Remove all target sections taken from ABFD. |
1584 | ||
1585 | Scan the current target stack for targets whose section tables | |
1586 | refer to sections from BFD, and remove those sections. We use this | |
1587 | when we notice that the inferior has unloaded a shared object, for | |
1588 | example. */ | |
1589 | void | |
1590 | remove_target_sections (bfd *abfd) | |
1591 | { | |
1592 | struct target_ops **t; | |
1593 | ||
1594 | for (t = target_structs; t < target_structs + target_struct_size; t++) | |
1595 | { | |
1596 | struct section_table *src, *dest; | |
1597 | ||
1598 | dest = (*t)->to_sections; | |
1599 | for (src = (*t)->to_sections; src < (*t)->to_sections_end; src++) | |
1600 | if (src->bfd != abfd) | |
1601 | { | |
1602 | /* Keep this section. */ | |
1603 | if (dest < src) *dest = *src; | |
1604 | dest++; | |
1605 | } | |
1606 | ||
1607 | /* If we've dropped any sections, resize the section table. */ | |
1608 | if (dest < src) | |
1609 | target_resize_to_sections (*t, dest - src); | |
1610 | } | |
1611 | } | |
1612 | ||
1613 | ||
1614 | ||
1615 | ||
7a292a7a SS |
1616 | /* Find a single runnable target in the stack and return it. If for |
1617 | some reason there is more than one, return NULL. */ | |
1618 | ||
1619 | struct target_ops * | |
fba45db2 | 1620 | find_run_target (void) |
7a292a7a SS |
1621 | { |
1622 | struct target_ops **t; | |
1623 | struct target_ops *runable = NULL; | |
1624 | int count; | |
c5aa993b | 1625 | |
7a292a7a | 1626 | count = 0; |
c5aa993b | 1627 | |
7a292a7a SS |
1628 | for (t = target_structs; t < target_structs + target_struct_size; ++t) |
1629 | { | |
c5aa993b | 1630 | if ((*t)->to_can_run && target_can_run (*t)) |
7a292a7a SS |
1631 | { |
1632 | runable = *t; | |
1633 | ++count; | |
1634 | } | |
1635 | } | |
c5aa993b | 1636 | |
7a292a7a SS |
1637 | return (count == 1 ? runable : NULL); |
1638 | } | |
1639 | ||
ed9a39eb JM |
1640 | /* Find a single core_stratum target in the list of targets and return it. |
1641 | If for some reason there is more than one, return NULL. */ | |
1642 | ||
c906108c | 1643 | struct target_ops * |
fba45db2 | 1644 | find_core_target (void) |
c906108c SS |
1645 | { |
1646 | struct target_ops **t; | |
1647 | struct target_ops *runable = NULL; | |
1648 | int count; | |
c5aa993b | 1649 | |
c906108c | 1650 | count = 0; |
c5aa993b | 1651 | |
c906108c SS |
1652 | for (t = target_structs; t < target_structs + target_struct_size; |
1653 | ++t) | |
1654 | { | |
1655 | if ((*t)->to_stratum == core_stratum) | |
1656 | { | |
1657 | runable = *t; | |
1658 | ++count; | |
1659 | } | |
1660 | } | |
c5aa993b JM |
1661 | |
1662 | return (count == 1 ? runable : NULL); | |
c906108c | 1663 | } |
ed9a39eb JM |
1664 | |
1665 | /* | |
1666 | * Find the next target down the stack from the specified target. | |
1667 | */ | |
1668 | ||
1669 | struct target_ops * | |
fba45db2 | 1670 | find_target_beneath (struct target_ops *t) |
ed9a39eb | 1671 | { |
258b763a | 1672 | return t->beneath; |
ed9a39eb JM |
1673 | } |
1674 | ||
c906108c SS |
1675 | \f |
1676 | /* The inferior process has died. Long live the inferior! */ | |
1677 | ||
1678 | void | |
fba45db2 | 1679 | generic_mourn_inferior (void) |
c906108c SS |
1680 | { |
1681 | extern int show_breakpoint_hit_counts; | |
1682 | ||
39f77062 | 1683 | inferior_ptid = null_ptid; |
c906108c SS |
1684 | attach_flag = 0; |
1685 | breakpoint_init_inferior (inf_exited); | |
1686 | registers_changed (); | |
1687 | ||
c906108c SS |
1688 | reopen_exec_file (); |
1689 | reinit_frame_cache (); | |
1690 | ||
1691 | /* It is confusing to the user for ignore counts to stick around | |
1692 | from previous runs of the inferior. So clear them. */ | |
1693 | /* However, it is more confusing for the ignore counts to disappear when | |
1694 | using hit counts. So don't clear them if we're counting hits. */ | |
1695 | if (!show_breakpoint_hit_counts) | |
1696 | breakpoint_clear_ignore_counts (); | |
c5b739b5 | 1697 | |
9a4105ab AC |
1698 | if (deprecated_detach_hook) |
1699 | deprecated_detach_hook (); | |
c906108c SS |
1700 | } |
1701 | \f | |
c906108c SS |
1702 | /* Helper function for child_wait and the Lynx derivatives of child_wait. |
1703 | HOSTSTATUS is the waitstatus from wait() or the equivalent; store our | |
1704 | translation of that in OURSTATUS. */ | |
1705 | void | |
fba45db2 | 1706 | store_waitstatus (struct target_waitstatus *ourstatus, int hoststatus) |
c906108c SS |
1707 | { |
1708 | #ifdef CHILD_SPECIAL_WAITSTATUS | |
1709 | /* CHILD_SPECIAL_WAITSTATUS should return nonzero and set *OURSTATUS | |
1710 | if it wants to deal with hoststatus. */ | |
1711 | if (CHILD_SPECIAL_WAITSTATUS (ourstatus, hoststatus)) | |
1712 | return; | |
1713 | #endif | |
1714 | ||
1715 | if (WIFEXITED (hoststatus)) | |
1716 | { | |
1717 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
1718 | ourstatus->value.integer = WEXITSTATUS (hoststatus); | |
1719 | } | |
1720 | else if (!WIFSTOPPED (hoststatus)) | |
1721 | { | |
1722 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
1723 | ourstatus->value.sig = target_signal_from_host (WTERMSIG (hoststatus)); | |
1724 | } | |
1725 | else | |
1726 | { | |
1727 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
1728 | ourstatus->value.sig = target_signal_from_host (WSTOPSIG (hoststatus)); | |
1729 | } | |
1730 | } | |
1731 | \f | |
c906108c | 1732 | /* Returns zero to leave the inferior alone, one to interrupt it. */ |
507f3c78 | 1733 | int (*target_activity_function) (void); |
c906108c SS |
1734 | int target_activity_fd; |
1735 | \f | |
1736 | /* Convert a normal process ID to a string. Returns the string in a static | |
1737 | buffer. */ | |
1738 | ||
1739 | char * | |
39f77062 | 1740 | normal_pid_to_str (ptid_t ptid) |
c906108c SS |
1741 | { |
1742 | static char buf[30]; | |
1743 | ||
39f77062 | 1744 | sprintf (buf, "process %d", PIDGET (ptid)); |
c906108c SS |
1745 | return buf; |
1746 | } | |
1747 | ||
be4d1333 | 1748 | /* Error-catcher for target_find_memory_regions */ |
be4d1333 MS |
1749 | static int dummy_find_memory_regions (int (*ignore1) (), void *ignore2) |
1750 | { | |
1751 | error ("No target."); | |
1752 | return 0; | |
1753 | } | |
1754 | ||
1755 | /* Error-catcher for target_make_corefile_notes */ | |
be4d1333 MS |
1756 | static char * dummy_make_corefile_notes (bfd *ignore1, int *ignore2) |
1757 | { | |
1758 | error ("No target."); | |
1759 | return NULL; | |
1760 | } | |
1761 | ||
c906108c SS |
1762 | /* Set up the handful of non-empty slots needed by the dummy target |
1763 | vector. */ | |
1764 | ||
1765 | static void | |
fba45db2 | 1766 | init_dummy_target (void) |
c906108c SS |
1767 | { |
1768 | dummy_target.to_shortname = "None"; | |
1769 | dummy_target.to_longname = "None"; | |
1770 | dummy_target.to_doc = ""; | |
1771 | dummy_target.to_attach = find_default_attach; | |
c906108c | 1772 | dummy_target.to_create_inferior = find_default_create_inferior; |
ed9a39eb | 1773 | dummy_target.to_pid_to_str = normal_pid_to_str; |
c906108c | 1774 | dummy_target.to_stratum = dummy_stratum; |
be4d1333 MS |
1775 | dummy_target.to_find_memory_regions = dummy_find_memory_regions; |
1776 | dummy_target.to_make_corefile_notes = dummy_make_corefile_notes; | |
0b603eba | 1777 | dummy_target.to_xfer_partial = default_xfer_partial; |
c906108c SS |
1778 | dummy_target.to_magic = OPS_MAGIC; |
1779 | } | |
c906108c | 1780 | \f |
c5aa993b | 1781 | |
c906108c SS |
1782 | static struct target_ops debug_target; |
1783 | ||
1784 | static void | |
fba45db2 | 1785 | debug_to_open (char *args, int from_tty) |
c906108c SS |
1786 | { |
1787 | debug_target.to_open (args, from_tty); | |
1788 | ||
96baa820 | 1789 | fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty); |
c906108c SS |
1790 | } |
1791 | ||
1792 | static void | |
fba45db2 | 1793 | debug_to_close (int quitting) |
c906108c | 1794 | { |
f1c07ab0 | 1795 | target_close (&debug_target, quitting); |
96baa820 | 1796 | fprintf_unfiltered (gdb_stdlog, "target_close (%d)\n", quitting); |
c906108c SS |
1797 | } |
1798 | ||
f1c07ab0 AC |
1799 | void |
1800 | target_close (struct target_ops *targ, int quitting) | |
1801 | { | |
1802 | if (targ->to_xclose != NULL) | |
1803 | targ->to_xclose (targ, quitting); | |
1804 | else if (targ->to_close != NULL) | |
1805 | targ->to_close (quitting); | |
1806 | } | |
1807 | ||
c906108c | 1808 | static void |
fba45db2 | 1809 | debug_to_attach (char *args, int from_tty) |
c906108c SS |
1810 | { |
1811 | debug_target.to_attach (args, from_tty); | |
1812 | ||
96baa820 | 1813 | fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n", args, from_tty); |
c906108c SS |
1814 | } |
1815 | ||
1816 | ||
1817 | static void | |
fba45db2 | 1818 | debug_to_post_attach (int pid) |
c906108c SS |
1819 | { |
1820 | debug_target.to_post_attach (pid); | |
1821 | ||
96baa820 | 1822 | fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid); |
c906108c SS |
1823 | } |
1824 | ||
c906108c | 1825 | static void |
fba45db2 | 1826 | debug_to_detach (char *args, int from_tty) |
c906108c SS |
1827 | { |
1828 | debug_target.to_detach (args, from_tty); | |
1829 | ||
96baa820 | 1830 | fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n", args, from_tty); |
c906108c SS |
1831 | } |
1832 | ||
6ad8ae5c DJ |
1833 | static void |
1834 | debug_to_disconnect (char *args, int from_tty) | |
1835 | { | |
1836 | debug_target.to_disconnect (args, from_tty); | |
1837 | ||
1838 | fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n", | |
1839 | args, from_tty); | |
1840 | } | |
1841 | ||
c906108c | 1842 | static void |
39f77062 | 1843 | debug_to_resume (ptid_t ptid, int step, enum target_signal siggnal) |
c906108c | 1844 | { |
39f77062 | 1845 | debug_target.to_resume (ptid, step, siggnal); |
c906108c | 1846 | |
39f77062 | 1847 | fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n", PIDGET (ptid), |
c906108c SS |
1848 | step ? "step" : "continue", |
1849 | target_signal_to_name (siggnal)); | |
1850 | } | |
1851 | ||
39f77062 KB |
1852 | static ptid_t |
1853 | debug_to_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 1854 | { |
39f77062 | 1855 | ptid_t retval; |
c906108c | 1856 | |
39f77062 | 1857 | retval = debug_target.to_wait (ptid, status); |
c906108c | 1858 | |
96baa820 | 1859 | fprintf_unfiltered (gdb_stdlog, |
39f77062 KB |
1860 | "target_wait (%d, status) = %d, ", PIDGET (ptid), |
1861 | PIDGET (retval)); | |
96baa820 | 1862 | fprintf_unfiltered (gdb_stdlog, "status->kind = "); |
c906108c SS |
1863 | switch (status->kind) |
1864 | { | |
1865 | case TARGET_WAITKIND_EXITED: | |
96baa820 | 1866 | fprintf_unfiltered (gdb_stdlog, "exited, status = %d\n", |
c906108c SS |
1867 | status->value.integer); |
1868 | break; | |
1869 | case TARGET_WAITKIND_STOPPED: | |
96baa820 | 1870 | fprintf_unfiltered (gdb_stdlog, "stopped, signal = %s\n", |
c906108c SS |
1871 | target_signal_to_name (status->value.sig)); |
1872 | break; | |
1873 | case TARGET_WAITKIND_SIGNALLED: | |
96baa820 | 1874 | fprintf_unfiltered (gdb_stdlog, "signalled, signal = %s\n", |
c906108c SS |
1875 | target_signal_to_name (status->value.sig)); |
1876 | break; | |
1877 | case TARGET_WAITKIND_LOADED: | |
96baa820 | 1878 | fprintf_unfiltered (gdb_stdlog, "loaded\n"); |
c906108c SS |
1879 | break; |
1880 | case TARGET_WAITKIND_FORKED: | |
96baa820 | 1881 | fprintf_unfiltered (gdb_stdlog, "forked\n"); |
c906108c SS |
1882 | break; |
1883 | case TARGET_WAITKIND_VFORKED: | |
96baa820 | 1884 | fprintf_unfiltered (gdb_stdlog, "vforked\n"); |
c906108c SS |
1885 | break; |
1886 | case TARGET_WAITKIND_EXECD: | |
96baa820 | 1887 | fprintf_unfiltered (gdb_stdlog, "execd\n"); |
c906108c SS |
1888 | break; |
1889 | case TARGET_WAITKIND_SPURIOUS: | |
96baa820 | 1890 | fprintf_unfiltered (gdb_stdlog, "spurious\n"); |
c906108c SS |
1891 | break; |
1892 | default: | |
96baa820 | 1893 | fprintf_unfiltered (gdb_stdlog, "unknown???\n"); |
c906108c SS |
1894 | break; |
1895 | } | |
1896 | ||
1897 | return retval; | |
1898 | } | |
1899 | ||
bf0c5130 AC |
1900 | static void |
1901 | debug_print_register (const char * func, int regno) | |
1902 | { | |
1903 | fprintf_unfiltered (gdb_stdlog, "%s ", func); | |
1904 | if (regno >= 0 && regno < NUM_REGS + NUM_PSEUDO_REGS | |
1905 | && REGISTER_NAME (regno) != NULL && REGISTER_NAME (regno)[0] != '\0') | |
1906 | fprintf_unfiltered (gdb_stdlog, "(%s)", REGISTER_NAME (regno)); | |
1907 | else | |
1908 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
1909 | if (regno >= 0) | |
1910 | { | |
1911 | int i; | |
d9d9c31f | 1912 | unsigned char buf[MAX_REGISTER_SIZE]; |
4caf0990 | 1913 | deprecated_read_register_gen (regno, buf); |
bf0c5130 | 1914 | fprintf_unfiltered (gdb_stdlog, " = "); |
3acba339 | 1915 | for (i = 0; i < register_size (current_gdbarch, regno); i++) |
bf0c5130 AC |
1916 | { |
1917 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
1918 | } | |
3acba339 | 1919 | if (register_size (current_gdbarch, regno) <= sizeof (LONGEST)) |
bf0c5130 AC |
1920 | { |
1921 | fprintf_unfiltered (gdb_stdlog, " 0x%s %s", | |
1922 | paddr_nz (read_register (regno)), | |
1923 | paddr_d (read_register (regno))); | |
1924 | } | |
1925 | } | |
1926 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1927 | } | |
1928 | ||
c906108c | 1929 | static void |
fba45db2 | 1930 | debug_to_fetch_registers (int regno) |
c906108c SS |
1931 | { |
1932 | debug_target.to_fetch_registers (regno); | |
bf0c5130 | 1933 | debug_print_register ("target_fetch_registers", regno); |
c906108c SS |
1934 | } |
1935 | ||
1936 | static void | |
fba45db2 | 1937 | debug_to_store_registers (int regno) |
c906108c SS |
1938 | { |
1939 | debug_target.to_store_registers (regno); | |
bf0c5130 AC |
1940 | debug_print_register ("target_store_registers", regno); |
1941 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
c906108c SS |
1942 | } |
1943 | ||
1944 | static void | |
fba45db2 | 1945 | debug_to_prepare_to_store (void) |
c906108c SS |
1946 | { |
1947 | debug_target.to_prepare_to_store (); | |
1948 | ||
96baa820 | 1949 | fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n"); |
c906108c SS |
1950 | } |
1951 | ||
1952 | static int | |
fba45db2 | 1953 | debug_to_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
29e57380 | 1954 | struct mem_attrib *attrib, |
fba45db2 | 1955 | struct target_ops *target) |
c906108c SS |
1956 | { |
1957 | int retval; | |
1958 | ||
29e57380 C |
1959 | retval = debug_target.to_xfer_memory (memaddr, myaddr, len, write, |
1960 | attrib, target); | |
c906108c | 1961 | |
96baa820 | 1962 | fprintf_unfiltered (gdb_stdlog, |
c906108c | 1963 | "target_xfer_memory (0x%x, xxx, %d, %s, xxx) = %d", |
c5aa993b | 1964 | (unsigned int) memaddr, /* possable truncate long long */ |
c906108c SS |
1965 | len, write ? "write" : "read", retval); |
1966 | ||
c906108c SS |
1967 | if (retval > 0) |
1968 | { | |
1969 | int i; | |
1970 | ||
96baa820 | 1971 | fputs_unfiltered (", bytes =", gdb_stdlog); |
c906108c SS |
1972 | for (i = 0; i < retval; i++) |
1973 | { | |
1974 | if ((((long) &(myaddr[i])) & 0xf) == 0) | |
333dabeb DJ |
1975 | { |
1976 | if (targetdebug < 2 && i > 0) | |
1977 | { | |
1978 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
1979 | break; | |
1980 | } | |
1981 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1982 | } | |
1983 | ||
96baa820 | 1984 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
c906108c SS |
1985 | } |
1986 | } | |
1987 | ||
96baa820 | 1988 | fputc_unfiltered ('\n', gdb_stdlog); |
c906108c SS |
1989 | |
1990 | return retval; | |
1991 | } | |
1992 | ||
1993 | static void | |
fba45db2 | 1994 | debug_to_files_info (struct target_ops *target) |
c906108c SS |
1995 | { |
1996 | debug_target.to_files_info (target); | |
1997 | ||
96baa820 | 1998 | fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n"); |
c906108c SS |
1999 | } |
2000 | ||
2001 | static int | |
fba45db2 | 2002 | debug_to_insert_breakpoint (CORE_ADDR addr, char *save) |
c906108c SS |
2003 | { |
2004 | int retval; | |
2005 | ||
2006 | retval = debug_target.to_insert_breakpoint (addr, save); | |
2007 | ||
96baa820 | 2008 | fprintf_unfiltered (gdb_stdlog, |
104c1213 JM |
2009 | "target_insert_breakpoint (0x%lx, xxx) = %ld\n", |
2010 | (unsigned long) addr, | |
2011 | (unsigned long) retval); | |
c906108c SS |
2012 | return retval; |
2013 | } | |
2014 | ||
2015 | static int | |
fba45db2 | 2016 | debug_to_remove_breakpoint (CORE_ADDR addr, char *save) |
c906108c SS |
2017 | { |
2018 | int retval; | |
2019 | ||
2020 | retval = debug_target.to_remove_breakpoint (addr, save); | |
2021 | ||
96baa820 | 2022 | fprintf_unfiltered (gdb_stdlog, |
104c1213 JM |
2023 | "target_remove_breakpoint (0x%lx, xxx) = %ld\n", |
2024 | (unsigned long) addr, | |
2025 | (unsigned long) retval); | |
c906108c SS |
2026 | return retval; |
2027 | } | |
2028 | ||
ccaa32c7 GS |
2029 | static int |
2030 | debug_to_can_use_hw_breakpoint (int type, int cnt, int from_tty) | |
2031 | { | |
2032 | int retval; | |
2033 | ||
2034 | retval = debug_target.to_can_use_hw_breakpoint (type, cnt, from_tty); | |
2035 | ||
2036 | fprintf_unfiltered (gdb_stdlog, | |
2037 | "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n", | |
2038 | (unsigned long) type, | |
2039 | (unsigned long) cnt, | |
2040 | (unsigned long) from_tty, | |
2041 | (unsigned long) retval); | |
2042 | return retval; | |
2043 | } | |
2044 | ||
2045 | static int | |
2046 | debug_to_region_size_ok_for_hw_watchpoint (int byte_count) | |
2047 | { | |
2048 | CORE_ADDR retval; | |
2049 | ||
2050 | retval = debug_target.to_region_size_ok_for_hw_watchpoint (byte_count); | |
2051 | ||
2052 | fprintf_unfiltered (gdb_stdlog, | |
2053 | "TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT (%ld) = 0x%lx\n", | |
2054 | (unsigned long) byte_count, | |
2055 | (unsigned long) retval); | |
2056 | return retval; | |
2057 | } | |
2058 | ||
2059 | static int | |
2060 | debug_to_stopped_by_watchpoint (void) | |
2061 | { | |
2062 | int retval; | |
2063 | ||
2064 | retval = debug_target.to_stopped_by_watchpoint (); | |
2065 | ||
2066 | fprintf_unfiltered (gdb_stdlog, | |
2067 | "STOPPED_BY_WATCHPOINT () = %ld\n", | |
2068 | (unsigned long) retval); | |
2069 | return retval; | |
2070 | } | |
2071 | ||
2072 | static CORE_ADDR | |
2073 | debug_to_stopped_data_address (void) | |
2074 | { | |
2075 | CORE_ADDR retval; | |
2076 | ||
2077 | retval = debug_target.to_stopped_data_address (); | |
2078 | ||
2079 | fprintf_unfiltered (gdb_stdlog, | |
2080 | "target_stopped_data_address () = 0x%lx\n", | |
2081 | (unsigned long) retval); | |
2082 | return retval; | |
2083 | } | |
2084 | ||
2085 | static int | |
2086 | debug_to_insert_hw_breakpoint (CORE_ADDR addr, char *save) | |
2087 | { | |
2088 | int retval; | |
2089 | ||
2090 | retval = debug_target.to_insert_hw_breakpoint (addr, save); | |
2091 | ||
2092 | fprintf_unfiltered (gdb_stdlog, | |
2093 | "target_insert_hw_breakpoint (0x%lx, xxx) = %ld\n", | |
2094 | (unsigned long) addr, | |
2095 | (unsigned long) retval); | |
2096 | return retval; | |
2097 | } | |
2098 | ||
2099 | static int | |
2100 | debug_to_remove_hw_breakpoint (CORE_ADDR addr, char *save) | |
2101 | { | |
2102 | int retval; | |
2103 | ||
2104 | retval = debug_target.to_remove_hw_breakpoint (addr, save); | |
2105 | ||
2106 | fprintf_unfiltered (gdb_stdlog, | |
2107 | "target_remove_hw_breakpoint (0x%lx, xxx) = %ld\n", | |
2108 | (unsigned long) addr, | |
2109 | (unsigned long) retval); | |
2110 | return retval; | |
2111 | } | |
2112 | ||
2113 | static int | |
2114 | debug_to_insert_watchpoint (CORE_ADDR addr, int len, int type) | |
2115 | { | |
2116 | int retval; | |
2117 | ||
2118 | retval = debug_target.to_insert_watchpoint (addr, len, type); | |
2119 | ||
2120 | fprintf_unfiltered (gdb_stdlog, | |
2121 | "target_insert_watchpoint (0x%lx, %d, %d) = %ld\n", | |
2122 | (unsigned long) addr, len, type, (unsigned long) retval); | |
2123 | return retval; | |
2124 | } | |
2125 | ||
2126 | static int | |
2127 | debug_to_remove_watchpoint (CORE_ADDR addr, int len, int type) | |
2128 | { | |
2129 | int retval; | |
2130 | ||
2131 | retval = debug_target.to_insert_watchpoint (addr, len, type); | |
2132 | ||
2133 | fprintf_unfiltered (gdb_stdlog, | |
2134 | "target_insert_watchpoint (0x%lx, %d, %d) = %ld\n", | |
2135 | (unsigned long) addr, len, type, (unsigned long) retval); | |
2136 | return retval; | |
2137 | } | |
2138 | ||
c906108c | 2139 | static void |
fba45db2 | 2140 | debug_to_terminal_init (void) |
c906108c SS |
2141 | { |
2142 | debug_target.to_terminal_init (); | |
2143 | ||
96baa820 | 2144 | fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n"); |
c906108c SS |
2145 | } |
2146 | ||
2147 | static void | |
fba45db2 | 2148 | debug_to_terminal_inferior (void) |
c906108c SS |
2149 | { |
2150 | debug_target.to_terminal_inferior (); | |
2151 | ||
96baa820 | 2152 | fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n"); |
c906108c SS |
2153 | } |
2154 | ||
2155 | static void | |
fba45db2 | 2156 | debug_to_terminal_ours_for_output (void) |
c906108c SS |
2157 | { |
2158 | debug_target.to_terminal_ours_for_output (); | |
2159 | ||
96baa820 | 2160 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n"); |
c906108c SS |
2161 | } |
2162 | ||
2163 | static void | |
fba45db2 | 2164 | debug_to_terminal_ours (void) |
c906108c SS |
2165 | { |
2166 | debug_target.to_terminal_ours (); | |
2167 | ||
96baa820 | 2168 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n"); |
c906108c SS |
2169 | } |
2170 | ||
a790ad35 SC |
2171 | static void |
2172 | debug_to_terminal_save_ours (void) | |
2173 | { | |
2174 | debug_target.to_terminal_save_ours (); | |
2175 | ||
2176 | fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n"); | |
2177 | } | |
2178 | ||
c906108c | 2179 | static void |
fba45db2 | 2180 | debug_to_terminal_info (char *arg, int from_tty) |
c906108c SS |
2181 | { |
2182 | debug_target.to_terminal_info (arg, from_tty); | |
2183 | ||
96baa820 | 2184 | fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg, |
c906108c SS |
2185 | from_tty); |
2186 | } | |
2187 | ||
2188 | static void | |
fba45db2 | 2189 | debug_to_kill (void) |
c906108c SS |
2190 | { |
2191 | debug_target.to_kill (); | |
2192 | ||
96baa820 | 2193 | fprintf_unfiltered (gdb_stdlog, "target_kill ()\n"); |
c906108c SS |
2194 | } |
2195 | ||
2196 | static void | |
fba45db2 | 2197 | debug_to_load (char *args, int from_tty) |
c906108c SS |
2198 | { |
2199 | debug_target.to_load (args, from_tty); | |
2200 | ||
96baa820 | 2201 | fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty); |
c906108c SS |
2202 | } |
2203 | ||
2204 | static int | |
fba45db2 | 2205 | debug_to_lookup_symbol (char *name, CORE_ADDR *addrp) |
c906108c SS |
2206 | { |
2207 | int retval; | |
2208 | ||
2209 | retval = debug_target.to_lookup_symbol (name, addrp); | |
2210 | ||
96baa820 | 2211 | fprintf_unfiltered (gdb_stdlog, "target_lookup_symbol (%s, xxx)\n", name); |
c906108c SS |
2212 | |
2213 | return retval; | |
2214 | } | |
2215 | ||
2216 | static void | |
c27cda74 AC |
2217 | debug_to_create_inferior (char *exec_file, char *args, char **env, |
2218 | int from_tty) | |
c906108c | 2219 | { |
c27cda74 | 2220 | debug_target.to_create_inferior (exec_file, args, env, from_tty); |
c906108c | 2221 | |
c27cda74 AC |
2222 | fprintf_unfiltered (gdb_stdlog, "target_create_inferior (%s, %s, xxx, %d)\n", |
2223 | exec_file, args, from_tty); | |
c906108c SS |
2224 | } |
2225 | ||
2226 | static void | |
39f77062 | 2227 | debug_to_post_startup_inferior (ptid_t ptid) |
c906108c | 2228 | { |
39f77062 | 2229 | debug_target.to_post_startup_inferior (ptid); |
c906108c | 2230 | |
96baa820 | 2231 | fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n", |
39f77062 | 2232 | PIDGET (ptid)); |
c906108c SS |
2233 | } |
2234 | ||
2235 | static void | |
fba45db2 | 2236 | debug_to_acknowledge_created_inferior (int pid) |
c906108c SS |
2237 | { |
2238 | debug_target.to_acknowledge_created_inferior (pid); | |
2239 | ||
96baa820 | 2240 | fprintf_unfiltered (gdb_stdlog, "target_acknowledge_created_inferior (%d)\n", |
c906108c SS |
2241 | pid); |
2242 | } | |
2243 | ||
c906108c | 2244 | static int |
fba45db2 | 2245 | debug_to_insert_fork_catchpoint (int pid) |
c906108c | 2246 | { |
c5aa993b | 2247 | int retval; |
c906108c SS |
2248 | |
2249 | retval = debug_target.to_insert_fork_catchpoint (pid); | |
2250 | ||
96baa820 | 2251 | fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d) = %d\n", |
c5aa993b | 2252 | pid, retval); |
c906108c SS |
2253 | |
2254 | return retval; | |
2255 | } | |
2256 | ||
2257 | static int | |
fba45db2 | 2258 | debug_to_remove_fork_catchpoint (int pid) |
c906108c | 2259 | { |
c5aa993b | 2260 | int retval; |
c906108c SS |
2261 | |
2262 | retval = debug_target.to_remove_fork_catchpoint (pid); | |
2263 | ||
96baa820 | 2264 | fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n", |
c5aa993b | 2265 | pid, retval); |
c906108c SS |
2266 | |
2267 | return retval; | |
2268 | } | |
2269 | ||
2270 | static int | |
fba45db2 | 2271 | debug_to_insert_vfork_catchpoint (int pid) |
c906108c | 2272 | { |
c5aa993b | 2273 | int retval; |
c906108c SS |
2274 | |
2275 | retval = debug_target.to_insert_vfork_catchpoint (pid); | |
2276 | ||
96baa820 | 2277 | fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d)= %d\n", |
c5aa993b | 2278 | pid, retval); |
c906108c SS |
2279 | |
2280 | return retval; | |
2281 | } | |
2282 | ||
2283 | static int | |
fba45db2 | 2284 | debug_to_remove_vfork_catchpoint (int pid) |
c906108c | 2285 | { |
c5aa993b | 2286 | int retval; |
c906108c SS |
2287 | |
2288 | retval = debug_target.to_remove_vfork_catchpoint (pid); | |
2289 | ||
96baa820 | 2290 | fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n", |
c5aa993b | 2291 | pid, retval); |
c906108c SS |
2292 | |
2293 | return retval; | |
2294 | } | |
2295 | ||
6604731b DJ |
2296 | static int |
2297 | debug_to_follow_fork (int follow_child) | |
c906108c | 2298 | { |
6604731b | 2299 | int retval = debug_target.to_follow_fork (follow_child); |
c906108c | 2300 | |
6604731b DJ |
2301 | fprintf_unfiltered (gdb_stdlog, "target_follow_fork (%d) = %d\n", |
2302 | follow_child, retval); | |
2303 | ||
2304 | return retval; | |
c906108c SS |
2305 | } |
2306 | ||
2307 | static int | |
fba45db2 | 2308 | debug_to_insert_exec_catchpoint (int pid) |
c906108c | 2309 | { |
c5aa993b | 2310 | int retval; |
c906108c SS |
2311 | |
2312 | retval = debug_target.to_insert_exec_catchpoint (pid); | |
2313 | ||
96baa820 | 2314 | fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d) = %d\n", |
c5aa993b | 2315 | pid, retval); |
c906108c SS |
2316 | |
2317 | return retval; | |
2318 | } | |
2319 | ||
2320 | static int | |
fba45db2 | 2321 | debug_to_remove_exec_catchpoint (int pid) |
c906108c | 2322 | { |
c5aa993b | 2323 | int retval; |
c906108c SS |
2324 | |
2325 | retval = debug_target.to_remove_exec_catchpoint (pid); | |
2326 | ||
96baa820 | 2327 | fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n", |
c5aa993b | 2328 | pid, retval); |
c906108c SS |
2329 | |
2330 | return retval; | |
2331 | } | |
2332 | ||
c906108c | 2333 | static int |
fba45db2 | 2334 | debug_to_reported_exec_events_per_exec_call (void) |
c906108c | 2335 | { |
c5aa993b | 2336 | int reported_exec_events; |
c906108c SS |
2337 | |
2338 | reported_exec_events = debug_target.to_reported_exec_events_per_exec_call (); | |
2339 | ||
96baa820 | 2340 | fprintf_unfiltered (gdb_stdlog, |
c906108c | 2341 | "target_reported_exec_events_per_exec_call () = %d\n", |
c5aa993b | 2342 | reported_exec_events); |
c906108c SS |
2343 | |
2344 | return reported_exec_events; | |
2345 | } | |
2346 | ||
c906108c | 2347 | static int |
fba45db2 | 2348 | debug_to_has_exited (int pid, int wait_status, int *exit_status) |
c906108c | 2349 | { |
c5aa993b | 2350 | int has_exited; |
c906108c SS |
2351 | |
2352 | has_exited = debug_target.to_has_exited (pid, wait_status, exit_status); | |
2353 | ||
96baa820 | 2354 | fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n", |
c5aa993b | 2355 | pid, wait_status, *exit_status, has_exited); |
c906108c SS |
2356 | |
2357 | return has_exited; | |
2358 | } | |
2359 | ||
2360 | static void | |
fba45db2 | 2361 | debug_to_mourn_inferior (void) |
c906108c SS |
2362 | { |
2363 | debug_target.to_mourn_inferior (); | |
2364 | ||
96baa820 | 2365 | fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n"); |
c906108c SS |
2366 | } |
2367 | ||
2368 | static int | |
fba45db2 | 2369 | debug_to_can_run (void) |
c906108c SS |
2370 | { |
2371 | int retval; | |
2372 | ||
2373 | retval = debug_target.to_can_run (); | |
2374 | ||
96baa820 | 2375 | fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval); |
c906108c SS |
2376 | |
2377 | return retval; | |
2378 | } | |
2379 | ||
2380 | static void | |
39f77062 | 2381 | debug_to_notice_signals (ptid_t ptid) |
c906108c | 2382 | { |
39f77062 | 2383 | debug_target.to_notice_signals (ptid); |
c906108c | 2384 | |
39f77062 KB |
2385 | fprintf_unfiltered (gdb_stdlog, "target_notice_signals (%d)\n", |
2386 | PIDGET (ptid)); | |
c906108c SS |
2387 | } |
2388 | ||
2389 | static int | |
39f77062 | 2390 | debug_to_thread_alive (ptid_t ptid) |
c906108c SS |
2391 | { |
2392 | int retval; | |
2393 | ||
39f77062 | 2394 | retval = debug_target.to_thread_alive (ptid); |
c906108c | 2395 | |
96baa820 | 2396 | fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n", |
39f77062 | 2397 | PIDGET (ptid), retval); |
c906108c SS |
2398 | |
2399 | return retval; | |
2400 | } | |
2401 | ||
0d06e24b | 2402 | static void |
fba45db2 | 2403 | debug_to_find_new_threads (void) |
0d06e24b JM |
2404 | { |
2405 | debug_target.to_find_new_threads (); | |
2406 | ||
2407 | fputs_unfiltered ("target_find_new_threads ()\n", gdb_stdlog); | |
2408 | } | |
2409 | ||
c906108c | 2410 | static void |
fba45db2 | 2411 | debug_to_stop (void) |
c906108c SS |
2412 | { |
2413 | debug_target.to_stop (); | |
2414 | ||
96baa820 | 2415 | fprintf_unfiltered (gdb_stdlog, "target_stop ()\n"); |
c906108c SS |
2416 | } |
2417 | ||
96baa820 JM |
2418 | static void |
2419 | debug_to_rcmd (char *command, | |
d9fcf2fb | 2420 | struct ui_file *outbuf) |
96baa820 JM |
2421 | { |
2422 | debug_target.to_rcmd (command, outbuf); | |
2423 | fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command); | |
2424 | } | |
2425 | ||
c906108c | 2426 | static struct symtab_and_line * |
fba45db2 | 2427 | debug_to_enable_exception_callback (enum exception_event_kind kind, int enable) |
c906108c | 2428 | { |
7a292a7a SS |
2429 | struct symtab_and_line *result; |
2430 | result = debug_target.to_enable_exception_callback (kind, enable); | |
96baa820 | 2431 | fprintf_unfiltered (gdb_stdlog, |
c906108c SS |
2432 | "target get_exception_callback_sal (%d, %d)\n", |
2433 | kind, enable); | |
7a292a7a | 2434 | return result; |
c906108c SS |
2435 | } |
2436 | ||
2437 | static struct exception_event_record * | |
fba45db2 | 2438 | debug_to_get_current_exception_event (void) |
c906108c | 2439 | { |
7a292a7a | 2440 | struct exception_event_record *result; |
c5aa993b | 2441 | result = debug_target.to_get_current_exception_event (); |
96baa820 | 2442 | fprintf_unfiltered (gdb_stdlog, "target get_current_exception_event ()\n"); |
7a292a7a | 2443 | return result; |
c906108c SS |
2444 | } |
2445 | ||
2446 | static char * | |
fba45db2 | 2447 | debug_to_pid_to_exec_file (int pid) |
c906108c | 2448 | { |
c5aa993b | 2449 | char *exec_file; |
c906108c SS |
2450 | |
2451 | exec_file = debug_target.to_pid_to_exec_file (pid); | |
2452 | ||
96baa820 | 2453 | fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n", |
c5aa993b | 2454 | pid, exec_file); |
c906108c SS |
2455 | |
2456 | return exec_file; | |
2457 | } | |
2458 | ||
c906108c | 2459 | static void |
fba45db2 | 2460 | setup_target_debug (void) |
c906108c SS |
2461 | { |
2462 | memcpy (&debug_target, ¤t_target, sizeof debug_target); | |
2463 | ||
2464 | current_target.to_open = debug_to_open; | |
2465 | current_target.to_close = debug_to_close; | |
2466 | current_target.to_attach = debug_to_attach; | |
2467 | current_target.to_post_attach = debug_to_post_attach; | |
c906108c | 2468 | current_target.to_detach = debug_to_detach; |
6ad8ae5c | 2469 | current_target.to_disconnect = debug_to_disconnect; |
c906108c SS |
2470 | current_target.to_resume = debug_to_resume; |
2471 | current_target.to_wait = debug_to_wait; | |
c906108c SS |
2472 | current_target.to_fetch_registers = debug_to_fetch_registers; |
2473 | current_target.to_store_registers = debug_to_store_registers; | |
2474 | current_target.to_prepare_to_store = debug_to_prepare_to_store; | |
2475 | current_target.to_xfer_memory = debug_to_xfer_memory; | |
2476 | current_target.to_files_info = debug_to_files_info; | |
2477 | current_target.to_insert_breakpoint = debug_to_insert_breakpoint; | |
2478 | current_target.to_remove_breakpoint = debug_to_remove_breakpoint; | |
ccaa32c7 GS |
2479 | current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint; |
2480 | current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint; | |
2481 | current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint; | |
2482 | current_target.to_insert_watchpoint = debug_to_insert_watchpoint; | |
2483 | current_target.to_remove_watchpoint = debug_to_remove_watchpoint; | |
2484 | current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint; | |
2485 | current_target.to_stopped_data_address = debug_to_stopped_data_address; | |
2486 | current_target.to_region_size_ok_for_hw_watchpoint = debug_to_region_size_ok_for_hw_watchpoint; | |
c906108c SS |
2487 | current_target.to_terminal_init = debug_to_terminal_init; |
2488 | current_target.to_terminal_inferior = debug_to_terminal_inferior; | |
2489 | current_target.to_terminal_ours_for_output = debug_to_terminal_ours_for_output; | |
2490 | current_target.to_terminal_ours = debug_to_terminal_ours; | |
a790ad35 | 2491 | current_target.to_terminal_save_ours = debug_to_terminal_save_ours; |
c906108c SS |
2492 | current_target.to_terminal_info = debug_to_terminal_info; |
2493 | current_target.to_kill = debug_to_kill; | |
2494 | current_target.to_load = debug_to_load; | |
2495 | current_target.to_lookup_symbol = debug_to_lookup_symbol; | |
2496 | current_target.to_create_inferior = debug_to_create_inferior; | |
2497 | current_target.to_post_startup_inferior = debug_to_post_startup_inferior; | |
2498 | current_target.to_acknowledge_created_inferior = debug_to_acknowledge_created_inferior; | |
c906108c SS |
2499 | current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint; |
2500 | current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint; | |
2501 | current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint; | |
2502 | current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint; | |
6604731b | 2503 | current_target.to_follow_fork = debug_to_follow_fork; |
c906108c SS |
2504 | current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint; |
2505 | current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint; | |
c906108c | 2506 | current_target.to_reported_exec_events_per_exec_call = debug_to_reported_exec_events_per_exec_call; |
c906108c SS |
2507 | current_target.to_has_exited = debug_to_has_exited; |
2508 | current_target.to_mourn_inferior = debug_to_mourn_inferior; | |
2509 | current_target.to_can_run = debug_to_can_run; | |
2510 | current_target.to_notice_signals = debug_to_notice_signals; | |
2511 | current_target.to_thread_alive = debug_to_thread_alive; | |
0d06e24b | 2512 | current_target.to_find_new_threads = debug_to_find_new_threads; |
c906108c | 2513 | current_target.to_stop = debug_to_stop; |
96baa820 | 2514 | current_target.to_rcmd = debug_to_rcmd; |
c906108c SS |
2515 | current_target.to_enable_exception_callback = debug_to_enable_exception_callback; |
2516 | current_target.to_get_current_exception_event = debug_to_get_current_exception_event; | |
2517 | current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file; | |
c906108c SS |
2518 | |
2519 | } | |
c906108c | 2520 | \f |
c5aa993b JM |
2521 | |
2522 | static char targ_desc[] = | |
2523 | "Names of targets and files being debugged.\n\ | |
c906108c SS |
2524 | Shows the entire stack of targets currently in use (including the exec-file,\n\ |
2525 | core-file, and process, if any), as well as the symbol file name."; | |
2526 | ||
96baa820 JM |
2527 | static void |
2528 | do_monitor_command (char *cmd, | |
2529 | int from_tty) | |
2530 | { | |
2b5fe715 AC |
2531 | if ((current_target.to_rcmd |
2532 | == (void (*) (char *, struct ui_file *)) tcomplain) | |
96baa820 | 2533 | || (current_target.to_rcmd == debug_to_rcmd |
2b5fe715 AC |
2534 | && (debug_target.to_rcmd |
2535 | == (void (*) (char *, struct ui_file *)) tcomplain))) | |
96baa820 JM |
2536 | { |
2537 | error ("\"monitor\" command not supported by this target.\n"); | |
2538 | } | |
2539 | target_rcmd (cmd, gdb_stdtarg); | |
2540 | } | |
2541 | ||
c906108c | 2542 | void |
fba45db2 | 2543 | initialize_targets (void) |
c906108c SS |
2544 | { |
2545 | init_dummy_target (); | |
2546 | push_target (&dummy_target); | |
2547 | ||
2548 | add_info ("target", target_info, targ_desc); | |
2549 | add_info ("files", target_info, targ_desc); | |
2550 | ||
cb1a6d5f | 2551 | deprecated_add_show_from_set |
3a11626d MS |
2552 | (add_set_cmd ("target", class_maintenance, var_zinteger, |
2553 | (char *) &targetdebug, | |
2554 | "Set target debugging.\n\ | |
333dabeb DJ |
2555 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
2556 | verbose. Changes do not take effect until the next \"run\" or \"target\"\n\ | |
2557 | command.", &setdebuglist), | |
3a11626d MS |
2558 | &showdebuglist); |
2559 | ||
e707bbc2 AC |
2560 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
2561 | &trust_readonly, "\ | |
3b64bf98 AC |
2562 | Set mode for reading from readonly sections.", "\ |
2563 | Show mode for reading from readonly sections.", "\ | |
3a11626d MS |
2564 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
2565 | will be read from the object file instead of from the target. This will\n\ | |
e707bbc2 | 2566 | result in significant performance improvement for remote targets.", "\ |
3b64bf98 | 2567 | Mode for reading from readonly sections is %s.", |
e707bbc2 AC |
2568 | NULL, NULL, |
2569 | &setlist, &showlist); | |
96baa820 JM |
2570 | |
2571 | add_com ("monitor", class_obscure, do_monitor_command, | |
2572 | "Send a command to the remote monitor (remote targets only)."); | |
2573 | ||
8add0441 | 2574 | target_dcache = dcache_init (); |
c906108c | 2575 | } |