Commit | Line | Data |
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c906108c | 1 | /* Select target systems and architectures at runtime for GDB. |
7998dfc3 | 2 | |
6aba47ca | 3 | Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
0fb0cc75 | 4 | 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
f6519ebc | 5 | Free Software Foundation, Inc. |
7998dfc3 | 6 | |
c906108c SS |
7 | Contributed by Cygnus Support. |
8 | ||
c5aa993b | 9 | This file is part of GDB. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is free software; you can redistribute it and/or modify |
12 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 13 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 14 | (at your option) any later version. |
c906108c | 15 | |
c5aa993b JM |
16 | This program is distributed in the hope that it will be useful, |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
c906108c | 20 | |
c5aa993b | 21 | You should have received a copy of the GNU General Public License |
a9762ec7 | 22 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
23 | |
24 | #include "defs.h" | |
25 | #include <errno.h> | |
c906108c SS |
26 | #include "gdb_string.h" |
27 | #include "target.h" | |
28 | #include "gdbcmd.h" | |
29 | #include "symtab.h" | |
30 | #include "inferior.h" | |
31 | #include "bfd.h" | |
32 | #include "symfile.h" | |
33 | #include "objfiles.h" | |
03f2053f | 34 | #include "gdb_wait.h" |
4930751a | 35 | #include "dcache.h" |
c906108c | 36 | #include <signal.h> |
4e052eda | 37 | #include "regcache.h" |
0088c768 | 38 | #include "gdb_assert.h" |
b6591e8b | 39 | #include "gdbcore.h" |
9e35dae4 | 40 | #include "exceptions.h" |
424163ea | 41 | #include "target-descriptions.h" |
e1ac3328 | 42 | #include "gdbthread.h" |
b9db4ced | 43 | #include "solib.h" |
c906108c | 44 | |
a14ed312 | 45 | static void target_info (char *, int); |
c906108c | 46 | |
a14ed312 | 47 | static void kill_or_be_killed (int); |
c906108c | 48 | |
a14ed312 | 49 | static void default_terminal_info (char *, int); |
c906108c | 50 | |
5009afc5 AS |
51 | static int default_watchpoint_addr_within_range (struct target_ops *, |
52 | CORE_ADDR, CORE_ADDR, int); | |
53 | ||
e0d24f8d WZ |
54 | static int default_region_ok_for_hw_watchpoint (CORE_ADDR, int); |
55 | ||
a14ed312 | 56 | static int nosymbol (char *, CORE_ADDR *); |
c906108c | 57 | |
4ecb6f27 | 58 | static void tcomplain (void) ATTR_NORETURN; |
c906108c | 59 | |
a14ed312 | 60 | static int nomemory (CORE_ADDR, char *, int, int, struct target_ops *); |
c906108c | 61 | |
a14ed312 | 62 | static int return_zero (void); |
c906108c | 63 | |
a14ed312 | 64 | static int return_one (void); |
c906108c | 65 | |
ccaa32c7 GS |
66 | static int return_minus_one (void); |
67 | ||
a14ed312 | 68 | void target_ignore (void); |
c906108c | 69 | |
a14ed312 | 70 | static void target_command (char *, int); |
c906108c | 71 | |
a14ed312 | 72 | static struct target_ops *find_default_run_target (char *); |
c906108c | 73 | |
a14ed312 | 74 | static void nosupport_runtime (void); |
392a587b | 75 | |
4b8a223f | 76 | static LONGEST default_xfer_partial (struct target_ops *ops, |
0088c768 | 77 | enum target_object object, |
1b0ba102 AC |
78 | const char *annex, gdb_byte *readbuf, |
79 | const gdb_byte *writebuf, | |
8aa91c1e | 80 | ULONGEST offset, LONGEST len); |
0088c768 | 81 | |
cf7a04e8 DJ |
82 | static LONGEST current_xfer_partial (struct target_ops *ops, |
83 | enum target_object object, | |
84 | const char *annex, gdb_byte *readbuf, | |
85 | const gdb_byte *writebuf, | |
86 | ULONGEST offset, LONGEST len); | |
c906108c | 87 | |
cf7a04e8 DJ |
88 | static LONGEST target_xfer_partial (struct target_ops *ops, |
89 | enum target_object object, | |
90 | const char *annex, | |
91 | void *readbuf, const void *writebuf, | |
92 | ULONGEST offset, LONGEST len); | |
c906108c | 93 | |
a14ed312 | 94 | static void init_dummy_target (void); |
c906108c | 95 | |
aa869812 AC |
96 | static struct target_ops debug_target; |
97 | ||
a14ed312 | 98 | static void debug_to_open (char *, int); |
c906108c | 99 | |
316f2060 | 100 | static void debug_to_prepare_to_store (struct regcache *); |
c906108c | 101 | |
a14ed312 | 102 | static void debug_to_files_info (struct target_ops *); |
c906108c | 103 | |
8181d85f | 104 | static int debug_to_insert_breakpoint (struct bp_target_info *); |
c906108c | 105 | |
8181d85f | 106 | static int debug_to_remove_breakpoint (struct bp_target_info *); |
c906108c | 107 | |
ccaa32c7 GS |
108 | static int debug_to_can_use_hw_breakpoint (int, int, int); |
109 | ||
8181d85f | 110 | static int debug_to_insert_hw_breakpoint (struct bp_target_info *); |
ccaa32c7 | 111 | |
8181d85f | 112 | static int debug_to_remove_hw_breakpoint (struct bp_target_info *); |
ccaa32c7 GS |
113 | |
114 | static int debug_to_insert_watchpoint (CORE_ADDR, int, int); | |
115 | ||
116 | static int debug_to_remove_watchpoint (CORE_ADDR, int, int); | |
117 | ||
118 | static int debug_to_stopped_by_watchpoint (void); | |
119 | ||
4aa7a7f5 | 120 | static int debug_to_stopped_data_address (struct target_ops *, CORE_ADDR *); |
ccaa32c7 | 121 | |
5009afc5 AS |
122 | static int debug_to_watchpoint_addr_within_range (struct target_ops *, |
123 | CORE_ADDR, CORE_ADDR, int); | |
124 | ||
e0d24f8d WZ |
125 | static int debug_to_region_ok_for_hw_watchpoint (CORE_ADDR, int); |
126 | ||
a14ed312 | 127 | static void debug_to_terminal_init (void); |
c906108c | 128 | |
a14ed312 | 129 | static void debug_to_terminal_inferior (void); |
c906108c | 130 | |
a14ed312 | 131 | static void debug_to_terminal_ours_for_output (void); |
c906108c | 132 | |
a790ad35 SC |
133 | static void debug_to_terminal_save_ours (void); |
134 | ||
a14ed312 | 135 | static void debug_to_terminal_ours (void); |
c906108c | 136 | |
a14ed312 | 137 | static void debug_to_terminal_info (char *, int); |
c906108c | 138 | |
a14ed312 | 139 | static void debug_to_kill (void); |
c906108c | 140 | |
a14ed312 | 141 | static void debug_to_load (char *, int); |
c906108c | 142 | |
a14ed312 | 143 | static int debug_to_lookup_symbol (char *, CORE_ADDR *); |
c906108c | 144 | |
a14ed312 | 145 | static int debug_to_can_run (void); |
c906108c | 146 | |
39f77062 | 147 | static void debug_to_notice_signals (ptid_t); |
c906108c | 148 | |
94cc34af | 149 | static void debug_to_stop (ptid_t); |
c906108c | 150 | |
5ac10fd1 AC |
151 | /* NOTE: cagney/2004-09-29: Many targets reference this variable in |
152 | wierd and mysterious ways. Putting the variable here lets those | |
153 | wierd and mysterious ways keep building while they are being | |
154 | converted to the inferior inheritance structure. */ | |
1df84f13 | 155 | struct target_ops deprecated_child_ops; |
5ac10fd1 | 156 | |
c906108c | 157 | /* Pointer to array of target architecture structures; the size of the |
2bc416ba | 158 | array; the current index into the array; the allocated size of the |
c906108c SS |
159 | array. */ |
160 | struct target_ops **target_structs; | |
161 | unsigned target_struct_size; | |
162 | unsigned target_struct_index; | |
163 | unsigned target_struct_allocsize; | |
164 | #define DEFAULT_ALLOCSIZE 10 | |
165 | ||
166 | /* The initial current target, so that there is always a semi-valid | |
167 | current target. */ | |
168 | ||
169 | static struct target_ops dummy_target; | |
170 | ||
171 | /* Top of target stack. */ | |
172 | ||
258b763a | 173 | static struct target_ops *target_stack; |
c906108c SS |
174 | |
175 | /* The target structure we are currently using to talk to a process | |
176 | or file or whatever "inferior" we have. */ | |
177 | ||
178 | struct target_ops current_target; | |
179 | ||
180 | /* Command list for target. */ | |
181 | ||
182 | static struct cmd_list_element *targetlist = NULL; | |
183 | ||
cf7a04e8 DJ |
184 | /* Nonzero if we should trust readonly sections from the |
185 | executable when reading memory. */ | |
186 | ||
187 | static int trust_readonly = 0; | |
188 | ||
8defab1a DJ |
189 | /* Nonzero if we should show true memory content including |
190 | memory breakpoint inserted by gdb. */ | |
191 | ||
192 | static int show_memory_breakpoints = 0; | |
193 | ||
c906108c SS |
194 | /* Non-zero if we want to see trace of target level stuff. */ |
195 | ||
196 | static int targetdebug = 0; | |
920d2a44 AC |
197 | static void |
198 | show_targetdebug (struct ui_file *file, int from_tty, | |
199 | struct cmd_list_element *c, const char *value) | |
200 | { | |
201 | fprintf_filtered (file, _("Target debugging is %s.\n"), value); | |
202 | } | |
c906108c | 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) | |
1bedd215 AC |
242 | add_prefix_cmd ("target", class_run, target_command, _("\ |
243 | Connect to a target machine or process.\n\ | |
c906108c SS |
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\ | |
1bedd215 | 247 | `help target ' followed by the protocol name."), |
c906108c SS |
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 | ||
947b8855 PA |
266 | void |
267 | target_create_inferior (char *exec_file, char *args, | |
268 | char **env, int from_tty) | |
136d6dae VP |
269 | { |
270 | struct target_ops *t; | |
271 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
272 | { | |
273 | if (t->to_create_inferior != NULL) | |
274 | { | |
275 | t->to_create_inferior (t, exec_file, args, env, from_tty); | |
947b8855 PA |
276 | if (targetdebug) |
277 | fprintf_unfiltered (gdb_stdlog, | |
278 | "target_create_inferior (%s, %s, xxx, %d)\n", | |
279 | exec_file, args, from_tty); | |
136d6dae VP |
280 | return; |
281 | } | |
282 | } | |
283 | ||
284 | internal_error (__FILE__, __LINE__, | |
285 | "could not find a target to create inferior"); | |
286 | } | |
287 | ||
288 | ||
c906108c | 289 | static int |
fba45db2 KB |
290 | nomemory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
291 | struct target_ops *t) | |
c906108c | 292 | { |
c5aa993b JM |
293 | errno = EIO; /* Can't read/write this location */ |
294 | return 0; /* No bytes handled */ | |
c906108c SS |
295 | } |
296 | ||
297 | static void | |
fba45db2 | 298 | tcomplain (void) |
c906108c | 299 | { |
8a3fe4f8 | 300 | error (_("You can't do that when your target is `%s'"), |
c906108c SS |
301 | current_target.to_shortname); |
302 | } | |
303 | ||
304 | void | |
fba45db2 | 305 | noprocess (void) |
c906108c | 306 | { |
8a3fe4f8 | 307 | error (_("You can't do that without a process to debug.")); |
c906108c SS |
308 | } |
309 | ||
c906108c | 310 | static int |
fba45db2 | 311 | nosymbol (char *name, CORE_ADDR *addrp) |
c906108c | 312 | { |
c5aa993b | 313 | return 1; /* Symbol does not exist in target env */ |
c906108c SS |
314 | } |
315 | ||
392a587b | 316 | static void |
fba45db2 | 317 | nosupport_runtime (void) |
c906108c | 318 | { |
39f77062 | 319 | if (ptid_equal (inferior_ptid, null_ptid)) |
c906108c SS |
320 | noprocess (); |
321 | else | |
8a3fe4f8 | 322 | error (_("No run-time support for this")); |
c906108c SS |
323 | } |
324 | ||
325 | ||
c906108c | 326 | static void |
fba45db2 | 327 | default_terminal_info (char *args, int from_tty) |
c906108c | 328 | { |
a3f17187 | 329 | printf_unfiltered (_("No saved terminal information.\n")); |
c906108c SS |
330 | } |
331 | ||
332 | /* This is the default target_create_inferior and target_attach function. | |
333 | If the current target is executing, it asks whether to kill it off. | |
334 | If this function returns without calling error(), it has killed off | |
335 | the target, and the operation should be attempted. */ | |
336 | ||
337 | static void | |
fba45db2 | 338 | kill_or_be_killed (int from_tty) |
c906108c SS |
339 | { |
340 | if (target_has_execution) | |
341 | { | |
a3f17187 | 342 | printf_unfiltered (_("You are already running a program:\n")); |
c906108c | 343 | target_files_info (); |
9e2f0ad4 | 344 | if (query (_("Kill it? "))) |
c5aa993b JM |
345 | { |
346 | target_kill (); | |
347 | if (target_has_execution) | |
8a3fe4f8 | 348 | error (_("Killing the program did not help.")); |
c5aa993b JM |
349 | return; |
350 | } | |
351 | else | |
352 | { | |
8a3fe4f8 | 353 | error (_("Program not killed.")); |
c5aa993b | 354 | } |
c906108c | 355 | } |
c5aa993b | 356 | tcomplain (); |
c906108c SS |
357 | } |
358 | ||
0ef643c8 JB |
359 | /* A default implementation for the to_get_ada_task_ptid target method. |
360 | ||
361 | This function builds the PTID by using both LWP and TID as part of | |
362 | the PTID lwp and tid elements. The pid used is the pid of the | |
363 | inferior_ptid. */ | |
364 | ||
2c0b251b | 365 | static ptid_t |
0ef643c8 JB |
366 | default_get_ada_task_ptid (long lwp, long tid) |
367 | { | |
368 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid); | |
369 | } | |
370 | ||
7998dfc3 AC |
371 | /* Go through the target stack from top to bottom, copying over zero |
372 | entries in current_target, then filling in still empty entries. In | |
373 | effect, we are doing class inheritance through the pushed target | |
374 | vectors. | |
375 | ||
376 | NOTE: cagney/2003-10-17: The problem with this inheritance, as it | |
377 | is currently implemented, is that it discards any knowledge of | |
378 | which target an inherited method originally belonged to. | |
379 | Consequently, new new target methods should instead explicitly and | |
380 | locally search the target stack for the target that can handle the | |
381 | request. */ | |
c906108c SS |
382 | |
383 | static void | |
7998dfc3 | 384 | update_current_target (void) |
c906108c | 385 | { |
7998dfc3 AC |
386 | struct target_ops *t; |
387 | ||
08d8bcd7 | 388 | /* First, reset current's contents. */ |
7998dfc3 AC |
389 | memset (¤t_target, 0, sizeof (current_target)); |
390 | ||
391 | #define INHERIT(FIELD, TARGET) \ | |
392 | if (!current_target.FIELD) \ | |
393 | current_target.FIELD = (TARGET)->FIELD | |
394 | ||
395 | for (t = target_stack; t; t = t->beneath) | |
396 | { | |
397 | INHERIT (to_shortname, t); | |
398 | INHERIT (to_longname, t); | |
399 | INHERIT (to_doc, t); | |
b52323fa UW |
400 | /* Do not inherit to_open. */ |
401 | /* Do not inherit to_close. */ | |
136d6dae | 402 | /* Do not inherit to_attach. */ |
7998dfc3 | 403 | INHERIT (to_post_attach, t); |
dc177b7a | 404 | INHERIT (to_attach_no_wait, t); |
136d6dae | 405 | /* Do not inherit to_detach. */ |
597320e7 | 406 | /* Do not inherit to_disconnect. */ |
28439f5e | 407 | /* Do not inherit to_resume. */ |
117de6a9 | 408 | /* Do not inherit to_wait. */ |
28439f5e PA |
409 | /* Do not inherit to_fetch_registers. */ |
410 | /* Do not inherit to_store_registers. */ | |
7998dfc3 | 411 | INHERIT (to_prepare_to_store, t); |
c8e73a31 | 412 | INHERIT (deprecated_xfer_memory, t); |
7998dfc3 AC |
413 | INHERIT (to_files_info, t); |
414 | INHERIT (to_insert_breakpoint, t); | |
415 | INHERIT (to_remove_breakpoint, t); | |
416 | INHERIT (to_can_use_hw_breakpoint, t); | |
417 | INHERIT (to_insert_hw_breakpoint, t); | |
418 | INHERIT (to_remove_hw_breakpoint, t); | |
419 | INHERIT (to_insert_watchpoint, t); | |
420 | INHERIT (to_remove_watchpoint, t); | |
421 | INHERIT (to_stopped_data_address, t); | |
74174d2e | 422 | INHERIT (to_have_steppable_watchpoint, t); |
7998dfc3 | 423 | INHERIT (to_have_continuable_watchpoint, t); |
5009afc5 AS |
424 | INHERIT (to_stopped_by_watchpoint, t); |
425 | INHERIT (to_watchpoint_addr_within_range, t); | |
e0d24f8d | 426 | INHERIT (to_region_ok_for_hw_watchpoint, t); |
7998dfc3 AC |
427 | INHERIT (to_terminal_init, t); |
428 | INHERIT (to_terminal_inferior, t); | |
429 | INHERIT (to_terminal_ours_for_output, t); | |
430 | INHERIT (to_terminal_ours, t); | |
431 | INHERIT (to_terminal_save_ours, t); | |
432 | INHERIT (to_terminal_info, t); | |
433 | INHERIT (to_kill, t); | |
434 | INHERIT (to_load, t); | |
435 | INHERIT (to_lookup_symbol, t); | |
136d6dae | 436 | /* Do no inherit to_create_inferior. */ |
7998dfc3 AC |
437 | INHERIT (to_post_startup_inferior, t); |
438 | INHERIT (to_acknowledge_created_inferior, t); | |
439 | INHERIT (to_insert_fork_catchpoint, t); | |
440 | INHERIT (to_remove_fork_catchpoint, t); | |
441 | INHERIT (to_insert_vfork_catchpoint, t); | |
442 | INHERIT (to_remove_vfork_catchpoint, t); | |
ee057212 | 443 | /* Do not inherit to_follow_fork. */ |
7998dfc3 AC |
444 | INHERIT (to_insert_exec_catchpoint, t); |
445 | INHERIT (to_remove_exec_catchpoint, t); | |
7998dfc3 | 446 | INHERIT (to_has_exited, t); |
117de6a9 | 447 | /* Do not inherit to_mourn_inferiour. */ |
7998dfc3 AC |
448 | INHERIT (to_can_run, t); |
449 | INHERIT (to_notice_signals, t); | |
28439f5e PA |
450 | /* Do not inherit to_thread_alive. */ |
451 | /* Do not inherit to_find_new_threads. */ | |
117de6a9 | 452 | /* Do not inherit to_pid_to_str. */ |
7998dfc3 AC |
453 | INHERIT (to_extra_thread_info, t); |
454 | INHERIT (to_stop, t); | |
4b8a223f | 455 | /* Do not inherit to_xfer_partial. */ |
7998dfc3 | 456 | INHERIT (to_rcmd, t); |
7998dfc3 | 457 | INHERIT (to_pid_to_exec_file, t); |
49d03eab | 458 | INHERIT (to_log_command, t); |
7998dfc3 AC |
459 | INHERIT (to_stratum, t); |
460 | INHERIT (to_has_all_memory, t); | |
461 | INHERIT (to_has_memory, t); | |
462 | INHERIT (to_has_stack, t); | |
463 | INHERIT (to_has_registers, t); | |
464 | INHERIT (to_has_execution, t); | |
465 | INHERIT (to_has_thread_control, t); | |
466 | INHERIT (to_sections, t); | |
467 | INHERIT (to_sections_end, t); | |
468 | INHERIT (to_can_async_p, t); | |
469 | INHERIT (to_is_async_p, t); | |
470 | INHERIT (to_async, t); | |
b84876c2 | 471 | INHERIT (to_async_mask, t); |
7998dfc3 AC |
472 | INHERIT (to_find_memory_regions, t); |
473 | INHERIT (to_make_corefile_notes, t); | |
117de6a9 | 474 | /* Do not inherit to_get_thread_local_address. */ |
b2175913 | 475 | INHERIT (to_can_execute_reverse, t); |
424163ea | 476 | /* Do not inherit to_read_description. */ |
0ef643c8 | 477 | INHERIT (to_get_ada_task_ptid, t); |
08388c79 | 478 | /* Do not inherit to_search_memory. */ |
8a305172 | 479 | INHERIT (to_supports_multi_process, t); |
7998dfc3 | 480 | INHERIT (to_magic, t); |
fd79ecee | 481 | /* Do not inherit to_memory_map. */ |
a76d924d DJ |
482 | /* Do not inherit to_flash_erase. */ |
483 | /* Do not inherit to_flash_done. */ | |
7998dfc3 AC |
484 | } |
485 | #undef INHERIT | |
486 | ||
487 | /* Clean up a target struct so it no longer has any zero pointers in | |
0088c768 AC |
488 | it. Some entries are defaulted to a method that print an error, |
489 | others are hard-wired to a standard recursive default. */ | |
c906108c SS |
490 | |
491 | #define de_fault(field, value) \ | |
7998dfc3 AC |
492 | if (!current_target.field) \ |
493 | current_target.field = value | |
0d06e24b | 494 | |
2bc416ba DJ |
495 | de_fault (to_open, |
496 | (void (*) (char *, int)) | |
0d06e24b | 497 | tcomplain); |
2bc416ba DJ |
498 | de_fault (to_close, |
499 | (void (*) (int)) | |
0d06e24b | 500 | target_ignore); |
2bc416ba DJ |
501 | de_fault (to_post_attach, |
502 | (void (*) (int)) | |
0d06e24b | 503 | target_ignore); |
2bc416ba | 504 | de_fault (to_prepare_to_store, |
316f2060 | 505 | (void (*) (struct regcache *)) |
0d06e24b | 506 | noprocess); |
2bc416ba DJ |
507 | de_fault (deprecated_xfer_memory, |
508 | (int (*) (CORE_ADDR, gdb_byte *, int, int, struct mem_attrib *, struct target_ops *)) | |
0d06e24b | 509 | nomemory); |
2bc416ba DJ |
510 | de_fault (to_files_info, |
511 | (void (*) (struct target_ops *)) | |
0d06e24b | 512 | target_ignore); |
2bc416ba | 513 | de_fault (to_insert_breakpoint, |
0d06e24b | 514 | memory_insert_breakpoint); |
2bc416ba | 515 | de_fault (to_remove_breakpoint, |
0d06e24b | 516 | memory_remove_breakpoint); |
ccaa32c7 GS |
517 | de_fault (to_can_use_hw_breakpoint, |
518 | (int (*) (int, int, int)) | |
519 | return_zero); | |
520 | de_fault (to_insert_hw_breakpoint, | |
8181d85f | 521 | (int (*) (struct bp_target_info *)) |
ccaa32c7 GS |
522 | return_minus_one); |
523 | de_fault (to_remove_hw_breakpoint, | |
8181d85f | 524 | (int (*) (struct bp_target_info *)) |
ccaa32c7 GS |
525 | return_minus_one); |
526 | de_fault (to_insert_watchpoint, | |
527 | (int (*) (CORE_ADDR, int, int)) | |
528 | return_minus_one); | |
529 | de_fault (to_remove_watchpoint, | |
530 | (int (*) (CORE_ADDR, int, int)) | |
531 | return_minus_one); | |
532 | de_fault (to_stopped_by_watchpoint, | |
533 | (int (*) (void)) | |
534 | return_zero); | |
535 | de_fault (to_stopped_data_address, | |
4aa7a7f5 | 536 | (int (*) (struct target_ops *, CORE_ADDR *)) |
ccaa32c7 | 537 | return_zero); |
5009afc5 AS |
538 | de_fault (to_watchpoint_addr_within_range, |
539 | default_watchpoint_addr_within_range); | |
e0d24f8d WZ |
540 | de_fault (to_region_ok_for_hw_watchpoint, |
541 | default_region_ok_for_hw_watchpoint); | |
2bc416ba DJ |
542 | de_fault (to_terminal_init, |
543 | (void (*) (void)) | |
0d06e24b | 544 | target_ignore); |
2bc416ba DJ |
545 | de_fault (to_terminal_inferior, |
546 | (void (*) (void)) | |
0d06e24b | 547 | target_ignore); |
2bc416ba DJ |
548 | de_fault (to_terminal_ours_for_output, |
549 | (void (*) (void)) | |
0d06e24b | 550 | target_ignore); |
2bc416ba DJ |
551 | de_fault (to_terminal_ours, |
552 | (void (*) (void)) | |
0d06e24b | 553 | target_ignore); |
2bc416ba DJ |
554 | de_fault (to_terminal_save_ours, |
555 | (void (*) (void)) | |
a790ad35 | 556 | target_ignore); |
2bc416ba | 557 | de_fault (to_terminal_info, |
0d06e24b | 558 | default_terminal_info); |
2bc416ba DJ |
559 | de_fault (to_kill, |
560 | (void (*) (void)) | |
0d06e24b | 561 | noprocess); |
2bc416ba DJ |
562 | de_fault (to_load, |
563 | (void (*) (char *, int)) | |
0d06e24b | 564 | tcomplain); |
2bc416ba DJ |
565 | de_fault (to_lookup_symbol, |
566 | (int (*) (char *, CORE_ADDR *)) | |
0d06e24b | 567 | nosymbol); |
2bc416ba DJ |
568 | de_fault (to_post_startup_inferior, |
569 | (void (*) (ptid_t)) | |
0d06e24b | 570 | target_ignore); |
2bc416ba DJ |
571 | de_fault (to_acknowledge_created_inferior, |
572 | (void (*) (int)) | |
0d06e24b | 573 | target_ignore); |
2bc416ba DJ |
574 | de_fault (to_insert_fork_catchpoint, |
575 | (void (*) (int)) | |
0d06e24b | 576 | tcomplain); |
2bc416ba DJ |
577 | de_fault (to_remove_fork_catchpoint, |
578 | (int (*) (int)) | |
0d06e24b | 579 | tcomplain); |
2bc416ba DJ |
580 | de_fault (to_insert_vfork_catchpoint, |
581 | (void (*) (int)) | |
0d06e24b | 582 | tcomplain); |
2bc416ba DJ |
583 | de_fault (to_remove_vfork_catchpoint, |
584 | (int (*) (int)) | |
0d06e24b | 585 | tcomplain); |
2bc416ba DJ |
586 | de_fault (to_insert_exec_catchpoint, |
587 | (void (*) (int)) | |
0d06e24b | 588 | tcomplain); |
2bc416ba DJ |
589 | de_fault (to_remove_exec_catchpoint, |
590 | (int (*) (int)) | |
0d06e24b | 591 | tcomplain); |
2bc416ba DJ |
592 | de_fault (to_has_exited, |
593 | (int (*) (int, int, int *)) | |
0d06e24b | 594 | return_zero); |
2bc416ba | 595 | de_fault (to_can_run, |
0d06e24b | 596 | return_zero); |
2bc416ba DJ |
597 | de_fault (to_notice_signals, |
598 | (void (*) (ptid_t)) | |
0d06e24b | 599 | target_ignore); |
2bc416ba DJ |
600 | de_fault (to_extra_thread_info, |
601 | (char *(*) (struct thread_info *)) | |
0d06e24b | 602 | return_zero); |
2bc416ba | 603 | de_fault (to_stop, |
94cc34af | 604 | (void (*) (ptid_t)) |
0d06e24b | 605 | target_ignore); |
cf7a04e8 | 606 | current_target.to_xfer_partial = current_xfer_partial; |
2bc416ba DJ |
607 | de_fault (to_rcmd, |
608 | (void (*) (char *, struct ui_file *)) | |
0d06e24b | 609 | tcomplain); |
2bc416ba DJ |
610 | de_fault (to_pid_to_exec_file, |
611 | (char *(*) (int)) | |
0d06e24b | 612 | return_zero); |
2bc416ba DJ |
613 | de_fault (to_async, |
614 | (void (*) (void (*) (enum inferior_event_type, void*), void*)) | |
0d06e24b | 615 | tcomplain); |
b84876c2 PA |
616 | de_fault (to_async_mask, |
617 | (int (*) (int)) | |
618 | return_one); | |
424163ea | 619 | current_target.to_read_description = NULL; |
0ef643c8 JB |
620 | de_fault (to_get_ada_task_ptid, |
621 | (ptid_t (*) (long, long)) | |
622 | default_get_ada_task_ptid); | |
8a305172 PA |
623 | de_fault (to_supports_multi_process, |
624 | (int (*) (void)) | |
625 | return_zero); | |
c906108c | 626 | #undef de_fault |
c906108c | 627 | |
7998dfc3 AC |
628 | /* Finally, position the target-stack beneath the squashed |
629 | "current_target". That way code looking for a non-inherited | |
630 | target method can quickly and simply find it. */ | |
631 | current_target.beneath = target_stack; | |
b4b61fdb DJ |
632 | |
633 | if (targetdebug) | |
634 | setup_target_debug (); | |
c906108c SS |
635 | } |
636 | ||
52bb452f DJ |
637 | /* Mark OPS as a running target. This reverses the effect |
638 | of target_mark_exited. */ | |
639 | ||
640 | void | |
641 | target_mark_running (struct target_ops *ops) | |
642 | { | |
643 | struct target_ops *t; | |
644 | ||
645 | for (t = target_stack; t != NULL; t = t->beneath) | |
646 | if (t == ops) | |
647 | break; | |
648 | if (t == NULL) | |
649 | internal_error (__FILE__, __LINE__, | |
650 | "Attempted to mark unpushed target \"%s\" as running", | |
651 | ops->to_shortname); | |
652 | ||
653 | ops->to_has_execution = 1; | |
654 | ops->to_has_all_memory = 1; | |
655 | ops->to_has_memory = 1; | |
656 | ops->to_has_stack = 1; | |
657 | ops->to_has_registers = 1; | |
658 | ||
659 | update_current_target (); | |
660 | } | |
661 | ||
662 | /* Mark OPS as a non-running target. This reverses the effect | |
663 | of target_mark_running. */ | |
664 | ||
665 | void | |
666 | target_mark_exited (struct target_ops *ops) | |
667 | { | |
668 | struct target_ops *t; | |
669 | ||
670 | for (t = target_stack; t != NULL; t = t->beneath) | |
671 | if (t == ops) | |
672 | break; | |
673 | if (t == NULL) | |
674 | internal_error (__FILE__, __LINE__, | |
675 | "Attempted to mark unpushed target \"%s\" as running", | |
676 | ops->to_shortname); | |
677 | ||
678 | ops->to_has_execution = 0; | |
679 | ops->to_has_all_memory = 0; | |
680 | ops->to_has_memory = 0; | |
681 | ops->to_has_stack = 0; | |
682 | ops->to_has_registers = 0; | |
683 | ||
684 | update_current_target (); | |
685 | } | |
686 | ||
c906108c SS |
687 | /* Push a new target type into the stack of the existing target accessors, |
688 | possibly superseding some of the existing accessors. | |
689 | ||
690 | Result is zero if the pushed target ended up on top of the stack, | |
691 | nonzero if at least one target is on top of it. | |
692 | ||
693 | Rather than allow an empty stack, we always have the dummy target at | |
694 | the bottom stratum, so we can call the function vectors without | |
695 | checking them. */ | |
696 | ||
697 | int | |
fba45db2 | 698 | push_target (struct target_ops *t) |
c906108c | 699 | { |
258b763a | 700 | struct target_ops **cur; |
c906108c SS |
701 | |
702 | /* Check magic number. If wrong, it probably means someone changed | |
703 | the struct definition, but not all the places that initialize one. */ | |
704 | if (t->to_magic != OPS_MAGIC) | |
705 | { | |
c5aa993b JM |
706 | fprintf_unfiltered (gdb_stderr, |
707 | "Magic number of %s target struct wrong\n", | |
708 | t->to_shortname); | |
e2e0b3e5 | 709 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
c906108c SS |
710 | } |
711 | ||
258b763a AC |
712 | /* Find the proper stratum to install this target in. */ |
713 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) | |
c906108c | 714 | { |
258b763a | 715 | if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum) |
c906108c SS |
716 | break; |
717 | } | |
718 | ||
258b763a | 719 | /* If there's already targets at this stratum, remove them. */ |
88c231eb | 720 | /* FIXME: cagney/2003-10-15: I think this should be popping all |
258b763a AC |
721 | targets to CUR, and not just those at this stratum level. */ |
722 | while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum) | |
723 | { | |
724 | /* There's already something at this stratum level. Close it, | |
725 | and un-hook it from the stack. */ | |
726 | struct target_ops *tmp = (*cur); | |
727 | (*cur) = (*cur)->beneath; | |
728 | tmp->beneath = NULL; | |
f1c07ab0 | 729 | target_close (tmp, 0); |
258b763a | 730 | } |
c906108c SS |
731 | |
732 | /* We have removed all targets in our stratum, now add the new one. */ | |
258b763a AC |
733 | t->beneath = (*cur); |
734 | (*cur) = t; | |
c906108c SS |
735 | |
736 | update_current_target (); | |
737 | ||
258b763a AC |
738 | /* Not on top? */ |
739 | return (t != target_stack); | |
c906108c SS |
740 | } |
741 | ||
2bc416ba | 742 | /* Remove a target_ops vector from the stack, wherever it may be. |
c906108c SS |
743 | Return how many times it was removed (0 or 1). */ |
744 | ||
745 | int | |
fba45db2 | 746 | unpush_target (struct target_ops *t) |
c906108c | 747 | { |
258b763a AC |
748 | struct target_ops **cur; |
749 | struct target_ops *tmp; | |
c906108c | 750 | |
c8d104ad PA |
751 | if (t->to_stratum == dummy_stratum) |
752 | internal_error (__FILE__, __LINE__, | |
753 | "Attempt to unpush the dummy target"); | |
754 | ||
c906108c SS |
755 | /* Look for the specified target. Note that we assume that a target |
756 | can only occur once in the target stack. */ | |
757 | ||
258b763a AC |
758 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) |
759 | { | |
760 | if ((*cur) == t) | |
761 | break; | |
762 | } | |
c906108c | 763 | |
258b763a | 764 | if ((*cur) == NULL) |
c906108c SS |
765 | return 0; /* Didn't find target_ops, quit now */ |
766 | ||
5269965e AC |
767 | /* NOTE: cagney/2003-12-06: In '94 the close call was made |
768 | unconditional by moving it to before the above check that the | |
769 | target was in the target stack (something about "Change the way | |
770 | pushing and popping of targets work to support target overlays | |
771 | and inheritance"). This doesn't make much sense - only open | |
772 | targets should be closed. */ | |
773 | target_close (t, 0); | |
774 | ||
c906108c | 775 | /* Unchain the target */ |
258b763a AC |
776 | tmp = (*cur); |
777 | (*cur) = (*cur)->beneath; | |
778 | tmp->beneath = NULL; | |
c906108c SS |
779 | |
780 | update_current_target (); | |
c906108c SS |
781 | |
782 | return 1; | |
783 | } | |
784 | ||
785 | void | |
fba45db2 | 786 | pop_target (void) |
c906108c | 787 | { |
b52323fa | 788 | target_close (target_stack, 0); /* Let it clean up */ |
258b763a | 789 | if (unpush_target (target_stack) == 1) |
c906108c SS |
790 | return; |
791 | ||
c5aa993b JM |
792 | fprintf_unfiltered (gdb_stderr, |
793 | "pop_target couldn't find target %s\n", | |
794 | current_target.to_shortname); | |
e2e0b3e5 | 795 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
c906108c SS |
796 | } |
797 | ||
aa76d38d | 798 | void |
87ab71f0 | 799 | pop_all_targets_above (enum strata above_stratum, int quitting) |
aa76d38d | 800 | { |
87ab71f0 | 801 | while ((int) (current_target.to_stratum) > (int) above_stratum) |
aa76d38d | 802 | { |
b52323fa | 803 | target_close (target_stack, quitting); |
aa76d38d PA |
804 | if (!unpush_target (target_stack)) |
805 | { | |
806 | fprintf_unfiltered (gdb_stderr, | |
807 | "pop_all_targets couldn't find target %s\n", | |
b52323fa | 808 | target_stack->to_shortname); |
aa76d38d PA |
809 | internal_error (__FILE__, __LINE__, |
810 | _("failed internal consistency check")); | |
811 | break; | |
812 | } | |
813 | } | |
814 | } | |
815 | ||
87ab71f0 PA |
816 | void |
817 | pop_all_targets (int quitting) | |
818 | { | |
819 | pop_all_targets_above (dummy_stratum, quitting); | |
820 | } | |
821 | ||
72f5cf0e | 822 | /* Using the objfile specified in OBJFILE, find the address for the |
9e35dae4 DJ |
823 | current thread's thread-local storage with offset OFFSET. */ |
824 | CORE_ADDR | |
825 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) | |
826 | { | |
827 | volatile CORE_ADDR addr = 0; | |
117de6a9 PA |
828 | struct target_ops *target; |
829 | ||
830 | for (target = current_target.beneath; | |
831 | target != NULL; | |
832 | target = target->beneath) | |
833 | { | |
834 | if (target->to_get_thread_local_address != NULL) | |
835 | break; | |
836 | } | |
9e35dae4 | 837 | |
117de6a9 | 838 | if (target != NULL |
1cf3db46 | 839 | && gdbarch_fetch_tls_load_module_address_p (target_gdbarch)) |
9e35dae4 DJ |
840 | { |
841 | ptid_t ptid = inferior_ptid; | |
842 | volatile struct gdb_exception ex; | |
843 | ||
844 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
845 | { | |
846 | CORE_ADDR lm_addr; | |
847 | ||
848 | /* Fetch the load module address for this objfile. */ | |
1cf3db46 | 849 | lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch, |
9e35dae4 DJ |
850 | objfile); |
851 | /* If it's 0, throw the appropriate exception. */ | |
852 | if (lm_addr == 0) | |
853 | throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR, | |
854 | _("TLS load module not found")); | |
855 | ||
117de6a9 | 856 | addr = target->to_get_thread_local_address (target, ptid, lm_addr, offset); |
9e35dae4 DJ |
857 | } |
858 | /* If an error occurred, print TLS related messages here. Otherwise, | |
859 | throw the error to some higher catcher. */ | |
860 | if (ex.reason < 0) | |
861 | { | |
862 | int objfile_is_library = (objfile->flags & OBJF_SHARED); | |
863 | ||
864 | switch (ex.error) | |
865 | { | |
866 | case TLS_NO_LIBRARY_SUPPORT_ERROR: | |
867 | error (_("Cannot find thread-local variables in this thread library.")); | |
868 | break; | |
869 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: | |
870 | if (objfile_is_library) | |
871 | error (_("Cannot find shared library `%s' in dynamic" | |
872 | " linker's load module list"), objfile->name); | |
873 | else | |
874 | error (_("Cannot find executable file `%s' in dynamic" | |
875 | " linker's load module list"), objfile->name); | |
876 | break; | |
877 | case TLS_NOT_ALLOCATED_YET_ERROR: | |
878 | if (objfile_is_library) | |
879 | error (_("The inferior has not yet allocated storage for" | |
880 | " thread-local variables in\n" | |
881 | "the shared library `%s'\n" | |
882 | "for %s"), | |
883 | objfile->name, target_pid_to_str (ptid)); | |
884 | else | |
885 | error (_("The inferior has not yet allocated storage for" | |
886 | " thread-local variables in\n" | |
887 | "the executable `%s'\n" | |
888 | "for %s"), | |
889 | objfile->name, target_pid_to_str (ptid)); | |
890 | break; | |
891 | case TLS_GENERIC_ERROR: | |
892 | if (objfile_is_library) | |
893 | error (_("Cannot find thread-local storage for %s, " | |
894 | "shared library %s:\n%s"), | |
895 | target_pid_to_str (ptid), | |
896 | objfile->name, ex.message); | |
897 | else | |
898 | error (_("Cannot find thread-local storage for %s, " | |
899 | "executable file %s:\n%s"), | |
900 | target_pid_to_str (ptid), | |
901 | objfile->name, ex.message); | |
902 | break; | |
903 | default: | |
904 | throw_exception (ex); | |
905 | break; | |
906 | } | |
907 | } | |
908 | } | |
909 | /* It wouldn't be wrong here to try a gdbarch method, too; finding | |
910 | TLS is an ABI-specific thing. But we don't do that yet. */ | |
911 | else | |
912 | error (_("Cannot find thread-local variables on this target")); | |
913 | ||
914 | return addr; | |
915 | } | |
916 | ||
c906108c SS |
917 | #undef MIN |
918 | #define MIN(A, B) (((A) <= (B)) ? (A) : (B)) | |
919 | ||
920 | /* target_read_string -- read a null terminated string, up to LEN bytes, | |
921 | from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful. | |
922 | Set *STRING to a pointer to malloc'd memory containing the data; the caller | |
923 | is responsible for freeing it. Return the number of bytes successfully | |
924 | read. */ | |
925 | ||
926 | int | |
fba45db2 | 927 | target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop) |
c906108c SS |
928 | { |
929 | int tlen, origlen, offset, i; | |
1b0ba102 | 930 | gdb_byte buf[4]; |
c906108c SS |
931 | int errcode = 0; |
932 | char *buffer; | |
933 | int buffer_allocated; | |
934 | char *bufptr; | |
935 | unsigned int nbytes_read = 0; | |
936 | ||
6217bf3e MS |
937 | gdb_assert (string); |
938 | ||
c906108c SS |
939 | /* Small for testing. */ |
940 | buffer_allocated = 4; | |
941 | buffer = xmalloc (buffer_allocated); | |
942 | bufptr = buffer; | |
943 | ||
944 | origlen = len; | |
945 | ||
946 | while (len > 0) | |
947 | { | |
948 | tlen = MIN (len, 4 - (memaddr & 3)); | |
949 | offset = memaddr & 3; | |
950 | ||
1b0ba102 | 951 | errcode = target_read_memory (memaddr & ~3, buf, sizeof buf); |
c906108c SS |
952 | if (errcode != 0) |
953 | { | |
954 | /* The transfer request might have crossed the boundary to an | |
955 | unallocated region of memory. Retry the transfer, requesting | |
956 | a single byte. */ | |
957 | tlen = 1; | |
958 | offset = 0; | |
b8eb5af0 | 959 | errcode = target_read_memory (memaddr, buf, 1); |
c906108c SS |
960 | if (errcode != 0) |
961 | goto done; | |
962 | } | |
963 | ||
964 | if (bufptr - buffer + tlen > buffer_allocated) | |
965 | { | |
966 | unsigned int bytes; | |
967 | bytes = bufptr - buffer; | |
968 | buffer_allocated *= 2; | |
969 | buffer = xrealloc (buffer, buffer_allocated); | |
970 | bufptr = buffer + bytes; | |
971 | } | |
972 | ||
973 | for (i = 0; i < tlen; i++) | |
974 | { | |
975 | *bufptr++ = buf[i + offset]; | |
976 | if (buf[i + offset] == '\000') | |
977 | { | |
978 | nbytes_read += i + 1; | |
979 | goto done; | |
980 | } | |
981 | } | |
982 | ||
983 | memaddr += tlen; | |
984 | len -= tlen; | |
985 | nbytes_read += tlen; | |
986 | } | |
c5aa993b | 987 | done: |
6217bf3e | 988 | *string = buffer; |
c906108c SS |
989 | if (errnop != NULL) |
990 | *errnop = errcode; | |
c906108c SS |
991 | return nbytes_read; |
992 | } | |
993 | ||
8db32d44 AC |
994 | /* Find a section containing ADDR. */ |
995 | struct section_table * | |
996 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) | |
997 | { | |
998 | struct section_table *secp; | |
999 | for (secp = target->to_sections; | |
1000 | secp < target->to_sections_end; | |
1001 | secp++) | |
1002 | { | |
1003 | if (addr >= secp->addr && addr < secp->endaddr) | |
1004 | return secp; | |
1005 | } | |
1006 | return NULL; | |
1007 | } | |
1008 | ||
cf7a04e8 DJ |
1009 | /* Perform a partial memory transfer. The arguments and return |
1010 | value are just as for target_xfer_partial. */ | |
1011 | ||
1012 | static LONGEST | |
1013 | memory_xfer_partial (struct target_ops *ops, void *readbuf, const void *writebuf, | |
1014 | ULONGEST memaddr, LONGEST len) | |
0779438d | 1015 | { |
cf7a04e8 DJ |
1016 | LONGEST res; |
1017 | int reg_len; | |
1018 | struct mem_region *region; | |
1019 | ||
1020 | /* Zero length requests are ok and require no work. */ | |
1021 | if (len == 0) | |
1022 | return 0; | |
1023 | ||
1024 | /* Try the executable file, if "trust-readonly-sections" is set. */ | |
1025 | if (readbuf != NULL && trust_readonly) | |
1026 | { | |
1027 | struct section_table *secp; | |
1028 | ||
1029 | secp = target_section_by_addr (ops, memaddr); | |
1030 | if (secp != NULL | |
1031 | && (bfd_get_section_flags (secp->bfd, secp->the_bfd_section) | |
1032 | & SEC_READONLY)) | |
1033 | return xfer_memory (memaddr, readbuf, len, 0, NULL, ops); | |
1034 | } | |
1035 | ||
98646950 UW |
1036 | /* Likewise for accesses to unmapped overlay sections. */ |
1037 | if (readbuf != NULL && overlay_debugging) | |
1038 | { | |
714835d5 | 1039 | struct obj_section *section = find_pc_overlay (memaddr); |
98646950 UW |
1040 | if (pc_in_unmapped_range (memaddr, section)) |
1041 | return xfer_memory (memaddr, readbuf, len, 0, NULL, ops); | |
1042 | } | |
1043 | ||
cf7a04e8 DJ |
1044 | /* Try GDB's internal data cache. */ |
1045 | region = lookup_mem_region (memaddr); | |
4b5752d0 VP |
1046 | /* region->hi == 0 means there's no upper bound. */ |
1047 | if (memaddr + len < region->hi || region->hi == 0) | |
cf7a04e8 DJ |
1048 | reg_len = len; |
1049 | else | |
1050 | reg_len = region->hi - memaddr; | |
1051 | ||
1052 | switch (region->attrib.mode) | |
1053 | { | |
1054 | case MEM_RO: | |
1055 | if (writebuf != NULL) | |
1056 | return -1; | |
1057 | break; | |
1058 | ||
1059 | case MEM_WO: | |
1060 | if (readbuf != NULL) | |
1061 | return -1; | |
1062 | break; | |
a76d924d DJ |
1063 | |
1064 | case MEM_FLASH: | |
1065 | /* We only support writing to flash during "load" for now. */ | |
1066 | if (writebuf != NULL) | |
1067 | error (_("Writing to flash memory forbidden in this context")); | |
1068 | break; | |
4b5752d0 VP |
1069 | |
1070 | case MEM_NONE: | |
1071 | return -1; | |
cf7a04e8 DJ |
1072 | } |
1073 | ||
1074 | if (region->attrib.cache) | |
1075 | { | |
1076 | /* FIXME drow/2006-08-09: This call discards OPS, so the raw | |
1077 | memory request will start back at current_target. */ | |
1078 | if (readbuf != NULL) | |
1079 | res = dcache_xfer_memory (target_dcache, memaddr, readbuf, | |
1080 | reg_len, 0); | |
1081 | else | |
1082 | /* FIXME drow/2006-08-09: If we're going to preserve const | |
1083 | correctness dcache_xfer_memory should take readbuf and | |
1084 | writebuf. */ | |
1085 | res = dcache_xfer_memory (target_dcache, memaddr, | |
1086 | (void *) writebuf, | |
1087 | reg_len, 1); | |
1088 | if (res <= 0) | |
1089 | return -1; | |
1090 | else | |
8defab1a DJ |
1091 | { |
1092 | if (readbuf && !show_memory_breakpoints) | |
1093 | breakpoint_restore_shadows (readbuf, memaddr, reg_len); | |
1094 | return res; | |
1095 | } | |
cf7a04e8 DJ |
1096 | } |
1097 | ||
1098 | /* If none of those methods found the memory we wanted, fall back | |
1099 | to a target partial transfer. Normally a single call to | |
1100 | to_xfer_partial is enough; if it doesn't recognize an object | |
1101 | it will call the to_xfer_partial of the next target down. | |
1102 | But for memory this won't do. Memory is the only target | |
1103 | object which can be read from more than one valid target. | |
1104 | A core file, for instance, could have some of memory but | |
1105 | delegate other bits to the target below it. So, we must | |
1106 | manually try all targets. */ | |
1107 | ||
1108 | do | |
1109 | { | |
1110 | res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
4b5752d0 | 1111 | readbuf, writebuf, memaddr, reg_len); |
cf7a04e8 | 1112 | if (res > 0) |
8defab1a | 1113 | break; |
cf7a04e8 | 1114 | |
5ad3a4ca DJ |
1115 | /* We want to continue past core files to executables, but not |
1116 | past a running target's memory. */ | |
1117 | if (ops->to_has_all_memory) | |
8defab1a | 1118 | break; |
5ad3a4ca | 1119 | |
cf7a04e8 DJ |
1120 | ops = ops->beneath; |
1121 | } | |
1122 | while (ops != NULL); | |
1123 | ||
8defab1a DJ |
1124 | if (readbuf && !show_memory_breakpoints) |
1125 | breakpoint_restore_shadows (readbuf, memaddr, reg_len); | |
1126 | ||
cf7a04e8 DJ |
1127 | /* If we still haven't got anything, return the last error. We |
1128 | give up. */ | |
1129 | return res; | |
0779438d AC |
1130 | } |
1131 | ||
8defab1a DJ |
1132 | static void |
1133 | restore_show_memory_breakpoints (void *arg) | |
1134 | { | |
1135 | show_memory_breakpoints = (uintptr_t) arg; | |
1136 | } | |
1137 | ||
1138 | struct cleanup * | |
1139 | make_show_memory_breakpoints_cleanup (int show) | |
1140 | { | |
1141 | int current = show_memory_breakpoints; | |
1142 | show_memory_breakpoints = show; | |
1143 | ||
1144 | return make_cleanup (restore_show_memory_breakpoints, | |
1145 | (void *) (uintptr_t) current); | |
1146 | } | |
1147 | ||
27394598 AC |
1148 | static LONGEST |
1149 | target_xfer_partial (struct target_ops *ops, | |
1150 | enum target_object object, const char *annex, | |
1151 | void *readbuf, const void *writebuf, | |
1152 | ULONGEST offset, LONGEST len) | |
1153 | { | |
1154 | LONGEST retval; | |
1155 | ||
1156 | gdb_assert (ops->to_xfer_partial != NULL); | |
cf7a04e8 DJ |
1157 | |
1158 | /* If this is a memory transfer, let the memory-specific code | |
1159 | have a look at it instead. Memory transfers are more | |
1160 | complicated. */ | |
1161 | if (object == TARGET_OBJECT_MEMORY) | |
1162 | retval = memory_xfer_partial (ops, readbuf, writebuf, offset, len); | |
1163 | else | |
1164 | { | |
1165 | enum target_object raw_object = object; | |
1166 | ||
1167 | /* If this is a raw memory transfer, request the normal | |
1168 | memory object from other layers. */ | |
1169 | if (raw_object == TARGET_OBJECT_RAW_MEMORY) | |
1170 | raw_object = TARGET_OBJECT_MEMORY; | |
1171 | ||
1172 | retval = ops->to_xfer_partial (ops, raw_object, annex, readbuf, | |
1173 | writebuf, offset, len); | |
1174 | } | |
1175 | ||
27394598 AC |
1176 | if (targetdebug) |
1177 | { | |
1178 | const unsigned char *myaddr = NULL; | |
1179 | ||
1180 | fprintf_unfiltered (gdb_stdlog, | |
53b71562 | 1181 | "%s:target_xfer_partial (%d, %s, %s, %s, %s, %s) = %s", |
27394598 AC |
1182 | ops->to_shortname, |
1183 | (int) object, | |
1184 | (annex ? annex : "(null)"), | |
53b71562 JB |
1185 | host_address_to_string (readbuf), |
1186 | host_address_to_string (writebuf), | |
0b1553bc UW |
1187 | core_addr_to_string_nz (offset), |
1188 | plongest (len), plongest (retval)); | |
27394598 AC |
1189 | |
1190 | if (readbuf) | |
1191 | myaddr = readbuf; | |
1192 | if (writebuf) | |
1193 | myaddr = writebuf; | |
1194 | if (retval > 0 && myaddr != NULL) | |
1195 | { | |
1196 | int i; | |
2bc416ba | 1197 | |
27394598 AC |
1198 | fputs_unfiltered (", bytes =", gdb_stdlog); |
1199 | for (i = 0; i < retval; i++) | |
1200 | { | |
53b71562 | 1201 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1202 | { |
1203 | if (targetdebug < 2 && i > 0) | |
1204 | { | |
1205 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
1206 | break; | |
1207 | } | |
1208 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1209 | } | |
2bc416ba | 1210 | |
27394598 AC |
1211 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
1212 | } | |
1213 | } | |
2bc416ba | 1214 | |
27394598 AC |
1215 | fputc_unfiltered ('\n', gdb_stdlog); |
1216 | } | |
1217 | return retval; | |
1218 | } | |
1219 | ||
c906108c SS |
1220 | /* Read LEN bytes of target memory at address MEMADDR, placing the results in |
1221 | GDB's memory at MYADDR. Returns either 0 for success or an errno value | |
1222 | if any error occurs. | |
1223 | ||
1224 | If an error occurs, no guarantee is made about the contents of the data at | |
1225 | MYADDR. In particular, the caller should not depend upon partial reads | |
1226 | filling the buffer with good data. There is no way for the caller to know | |
1227 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 DJ |
1228 | deal with partial reads should call target_read (which will retry until |
1229 | it makes no progress, and then return how much was transferred). */ | |
c906108c SS |
1230 | |
1231 | int | |
fc1a4b47 | 1232 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 1233 | { |
cf7a04e8 DJ |
1234 | if (target_read (¤t_target, TARGET_OBJECT_MEMORY, NULL, |
1235 | myaddr, memaddr, len) == len) | |
1236 | return 0; | |
0779438d | 1237 | else |
cf7a04e8 | 1238 | return EIO; |
c906108c SS |
1239 | } |
1240 | ||
c906108c | 1241 | int |
fc1a4b47 | 1242 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) |
c906108c | 1243 | { |
cf7a04e8 DJ |
1244 | if (target_write (¤t_target, TARGET_OBJECT_MEMORY, NULL, |
1245 | myaddr, memaddr, len) == len) | |
1246 | return 0; | |
0779438d | 1247 | else |
cf7a04e8 | 1248 | return EIO; |
c906108c | 1249 | } |
c5aa993b | 1250 | |
fd79ecee DJ |
1251 | /* Fetch the target's memory map. */ |
1252 | ||
1253 | VEC(mem_region_s) * | |
1254 | target_memory_map (void) | |
1255 | { | |
1256 | VEC(mem_region_s) *result; | |
1257 | struct mem_region *last_one, *this_one; | |
1258 | int ix; | |
1259 | struct target_ops *t; | |
1260 | ||
1261 | if (targetdebug) | |
1262 | fprintf_unfiltered (gdb_stdlog, "target_memory_map ()\n"); | |
1263 | ||
1264 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1265 | if (t->to_memory_map != NULL) | |
1266 | break; | |
1267 | ||
1268 | if (t == NULL) | |
1269 | return NULL; | |
1270 | ||
1271 | result = t->to_memory_map (t); | |
1272 | if (result == NULL) | |
1273 | return NULL; | |
1274 | ||
1275 | qsort (VEC_address (mem_region_s, result), | |
1276 | VEC_length (mem_region_s, result), | |
1277 | sizeof (struct mem_region), mem_region_cmp); | |
1278 | ||
1279 | /* Check that regions do not overlap. Simultaneously assign | |
1280 | a numbering for the "mem" commands to use to refer to | |
1281 | each region. */ | |
1282 | last_one = NULL; | |
1283 | for (ix = 0; VEC_iterate (mem_region_s, result, ix, this_one); ix++) | |
1284 | { | |
1285 | this_one->number = ix; | |
1286 | ||
1287 | if (last_one && last_one->hi > this_one->lo) | |
1288 | { | |
1289 | warning (_("Overlapping regions in memory map: ignoring")); | |
1290 | VEC_free (mem_region_s, result); | |
1291 | return NULL; | |
1292 | } | |
1293 | last_one = this_one; | |
1294 | } | |
1295 | ||
1296 | return result; | |
1297 | } | |
1298 | ||
a76d924d DJ |
1299 | void |
1300 | target_flash_erase (ULONGEST address, LONGEST length) | |
1301 | { | |
1302 | struct target_ops *t; | |
1303 | ||
1304 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1305 | if (t->to_flash_erase != NULL) | |
1306 | { | |
1307 | if (targetdebug) | |
1308 | fprintf_unfiltered (gdb_stdlog, "target_flash_erase (%s, %s)\n", | |
1309 | paddr (address), phex (length, 0)); | |
8944021f DJ |
1310 | t->to_flash_erase (t, address, length); |
1311 | return; | |
a76d924d DJ |
1312 | } |
1313 | ||
1314 | tcomplain (); | |
1315 | } | |
1316 | ||
1317 | void | |
1318 | target_flash_done (void) | |
1319 | { | |
1320 | struct target_ops *t; | |
1321 | ||
1322 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1323 | if (t->to_flash_done != NULL) | |
1324 | { | |
1325 | if (targetdebug) | |
1326 | fprintf_unfiltered (gdb_stdlog, "target_flash_done\n"); | |
8944021f DJ |
1327 | t->to_flash_done (t); |
1328 | return; | |
a76d924d DJ |
1329 | } |
1330 | ||
1331 | tcomplain (); | |
1332 | } | |
1333 | ||
920d2a44 AC |
1334 | static void |
1335 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1336 | struct cmd_list_element *c, const char *value) | |
1337 | { | |
1338 | fprintf_filtered (file, _("\ | |
1339 | Mode for reading from readonly sections is %s.\n"), | |
1340 | value); | |
1341 | } | |
3a11626d | 1342 | |
1e3ff5ad AC |
1343 | /* More generic transfers. */ |
1344 | ||
0088c768 | 1345 | static LONGEST |
8aa91c1e | 1346 | default_xfer_partial (struct target_ops *ops, enum target_object object, |
2bc416ba | 1347 | const char *annex, gdb_byte *readbuf, |
1b0ba102 | 1348 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) |
0088c768 AC |
1349 | { |
1350 | if (object == TARGET_OBJECT_MEMORY | |
c8e73a31 AC |
1351 | && ops->deprecated_xfer_memory != NULL) |
1352 | /* If available, fall back to the target's | |
1353 | "deprecated_xfer_memory" method. */ | |
0088c768 | 1354 | { |
4b8a223f | 1355 | int xfered = -1; |
0088c768 | 1356 | errno = 0; |
4b8a223f AC |
1357 | if (writebuf != NULL) |
1358 | { | |
1359 | void *buffer = xmalloc (len); | |
1360 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |
1361 | memcpy (buffer, writebuf, len); | |
c8e73a31 AC |
1362 | xfered = ops->deprecated_xfer_memory (offset, buffer, len, |
1363 | 1/*write*/, NULL, ops); | |
4b8a223f AC |
1364 | do_cleanups (cleanup); |
1365 | } | |
1366 | if (readbuf != NULL) | |
244e85c8 MS |
1367 | xfered = ops->deprecated_xfer_memory (offset, readbuf, len, |
1368 | 0/*read*/, NULL, ops); | |
0088c768 AC |
1369 | if (xfered > 0) |
1370 | return xfered; | |
1371 | else if (xfered == 0 && errno == 0) | |
c8e73a31 AC |
1372 | /* "deprecated_xfer_memory" uses 0, cross checked against |
1373 | ERRNO as one indication of an error. */ | |
0088c768 AC |
1374 | return 0; |
1375 | else | |
1376 | return -1; | |
1377 | } | |
1378 | else if (ops->beneath != NULL) | |
cf7a04e8 DJ |
1379 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, |
1380 | readbuf, writebuf, offset, len); | |
1381 | else | |
1382 | return -1; | |
1383 | } | |
1384 | ||
1385 | /* The xfer_partial handler for the topmost target. Unlike the default, | |
1386 | it does not need to handle memory specially; it just passes all | |
1387 | requests down the stack. */ | |
1388 | ||
1389 | static LONGEST | |
1390 | current_xfer_partial (struct target_ops *ops, enum target_object object, | |
1391 | const char *annex, gdb_byte *readbuf, | |
1392 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1393 | { | |
1394 | if (ops->beneath != NULL) | |
1395 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, | |
1396 | readbuf, writebuf, offset, len); | |
0088c768 AC |
1397 | else |
1398 | return -1; | |
1399 | } | |
1400 | ||
1401 | /* Target vector read/write partial wrapper functions. | |
1402 | ||
1403 | NOTE: cagney/2003-10-21: I wonder if having "to_xfer_partial | |
1404 | (inbuf, outbuf)", instead of separate read/write methods, make life | |
1405 | easier. */ | |
1406 | ||
13547ab6 | 1407 | static LONGEST |
1e3ff5ad AC |
1408 | target_read_partial (struct target_ops *ops, |
1409 | enum target_object object, | |
1b0ba102 | 1410 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1411 | ULONGEST offset, LONGEST len) |
1412 | { | |
27394598 | 1413 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len); |
1e3ff5ad AC |
1414 | } |
1415 | ||
13547ab6 | 1416 | static LONGEST |
1e3ff5ad AC |
1417 | target_write_partial (struct target_ops *ops, |
1418 | enum target_object object, | |
1b0ba102 | 1419 | const char *annex, const gdb_byte *buf, |
1e3ff5ad AC |
1420 | ULONGEST offset, LONGEST len) |
1421 | { | |
27394598 | 1422 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len); |
1e3ff5ad AC |
1423 | } |
1424 | ||
1425 | /* Wrappers to perform the full transfer. */ | |
1426 | LONGEST | |
1427 | target_read (struct target_ops *ops, | |
1428 | enum target_object object, | |
1b0ba102 | 1429 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1430 | ULONGEST offset, LONGEST len) |
1431 | { | |
1432 | LONGEST xfered = 0; | |
1433 | while (xfered < len) | |
1434 | { | |
0088c768 | 1435 | LONGEST xfer = target_read_partial (ops, object, annex, |
fc1a4b47 | 1436 | (gdb_byte *) buf + xfered, |
0088c768 | 1437 | offset + xfered, len - xfered); |
1e3ff5ad | 1438 | /* Call an observer, notifying them of the xfer progress? */ |
13547ab6 DJ |
1439 | if (xfer == 0) |
1440 | return xfered; | |
1441 | if (xfer < 0) | |
0088c768 | 1442 | return -1; |
1e3ff5ad AC |
1443 | xfered += xfer; |
1444 | QUIT; | |
1445 | } | |
1446 | return len; | |
1447 | } | |
1448 | ||
d5086790 VP |
1449 | LONGEST |
1450 | target_read_until_error (struct target_ops *ops, | |
1451 | enum target_object object, | |
1452 | const char *annex, gdb_byte *buf, | |
1453 | ULONGEST offset, LONGEST len) | |
1454 | { | |
1455 | LONGEST xfered = 0; | |
1456 | while (xfered < len) | |
1457 | { | |
1458 | LONGEST xfer = target_read_partial (ops, object, annex, | |
1459 | (gdb_byte *) buf + xfered, | |
1460 | offset + xfered, len - xfered); | |
1461 | /* Call an observer, notifying them of the xfer progress? */ | |
1462 | if (xfer == 0) | |
1463 | return xfered; | |
1464 | if (xfer < 0) | |
1465 | { | |
1466 | /* We've got an error. Try to read in smaller blocks. */ | |
1467 | ULONGEST start = offset + xfered; | |
1468 | ULONGEST remaining = len - xfered; | |
1469 | ULONGEST half; | |
1470 | ||
1471 | /* If an attempt was made to read a random memory address, | |
1472 | it's likely that the very first byte is not accessible. | |
1473 | Try reading the first byte, to avoid doing log N tries | |
1474 | below. */ | |
1475 | xfer = target_read_partial (ops, object, annex, | |
1476 | (gdb_byte *) buf + xfered, start, 1); | |
1477 | if (xfer <= 0) | |
1478 | return xfered; | |
1479 | start += 1; | |
1480 | remaining -= 1; | |
1481 | half = remaining/2; | |
1482 | ||
1483 | while (half > 0) | |
1484 | { | |
1485 | xfer = target_read_partial (ops, object, annex, | |
1486 | (gdb_byte *) buf + xfered, | |
1487 | start, half); | |
1488 | if (xfer == 0) | |
1489 | return xfered; | |
1490 | if (xfer < 0) | |
1491 | { | |
1492 | remaining = half; | |
1493 | } | |
1494 | else | |
1495 | { | |
1496 | /* We have successfully read the first half. So, the | |
1497 | error must be in the second half. Adjust start and | |
1498 | remaining to point at the second half. */ | |
1499 | xfered += xfer; | |
1500 | start += xfer; | |
1501 | remaining -= xfer; | |
1502 | } | |
1503 | half = remaining/2; | |
1504 | } | |
1505 | ||
1506 | return xfered; | |
1507 | } | |
1508 | xfered += xfer; | |
1509 | QUIT; | |
1510 | } | |
1511 | return len; | |
1512 | } | |
1513 | ||
1514 | ||
cf7a04e8 DJ |
1515 | /* An alternative to target_write with progress callbacks. */ |
1516 | ||
1e3ff5ad | 1517 | LONGEST |
cf7a04e8 DJ |
1518 | target_write_with_progress (struct target_ops *ops, |
1519 | enum target_object object, | |
1520 | const char *annex, const gdb_byte *buf, | |
1521 | ULONGEST offset, LONGEST len, | |
1522 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad AC |
1523 | { |
1524 | LONGEST xfered = 0; | |
a76d924d DJ |
1525 | |
1526 | /* Give the progress callback a chance to set up. */ | |
1527 | if (progress) | |
1528 | (*progress) (0, baton); | |
1529 | ||
1e3ff5ad AC |
1530 | while (xfered < len) |
1531 | { | |
1532 | LONGEST xfer = target_write_partial (ops, object, annex, | |
fc1a4b47 | 1533 | (gdb_byte *) buf + xfered, |
1e3ff5ad | 1534 | offset + xfered, len - xfered); |
cf7a04e8 | 1535 | |
13547ab6 DJ |
1536 | if (xfer == 0) |
1537 | return xfered; | |
1538 | if (xfer < 0) | |
0088c768 | 1539 | return -1; |
cf7a04e8 DJ |
1540 | |
1541 | if (progress) | |
1542 | (*progress) (xfer, baton); | |
1543 | ||
1e3ff5ad AC |
1544 | xfered += xfer; |
1545 | QUIT; | |
1546 | } | |
1547 | return len; | |
1548 | } | |
1549 | ||
cf7a04e8 DJ |
1550 | LONGEST |
1551 | target_write (struct target_ops *ops, | |
1552 | enum target_object object, | |
1553 | const char *annex, const gdb_byte *buf, | |
1554 | ULONGEST offset, LONGEST len) | |
1555 | { | |
1556 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
1557 | NULL, NULL); | |
1558 | } | |
1559 | ||
159f81f3 DJ |
1560 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
1561 | the size of the transferred data. PADDING additional bytes are | |
1562 | available in *BUF_P. This is a helper function for | |
1563 | target_read_alloc; see the declaration of that function for more | |
1564 | information. */ | |
13547ab6 | 1565 | |
159f81f3 DJ |
1566 | static LONGEST |
1567 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, | |
1568 | const char *annex, gdb_byte **buf_p, int padding) | |
13547ab6 DJ |
1569 | { |
1570 | size_t buf_alloc, buf_pos; | |
1571 | gdb_byte *buf; | |
1572 | LONGEST n; | |
1573 | ||
1574 | /* This function does not have a length parameter; it reads the | |
1575 | entire OBJECT). Also, it doesn't support objects fetched partly | |
1576 | from one target and partly from another (in a different stratum, | |
1577 | e.g. a core file and an executable). Both reasons make it | |
1578 | unsuitable for reading memory. */ | |
1579 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
1580 | ||
1581 | /* Start by reading up to 4K at a time. The target will throttle | |
1582 | this number down if necessary. */ | |
1583 | buf_alloc = 4096; | |
1584 | buf = xmalloc (buf_alloc); | |
1585 | buf_pos = 0; | |
1586 | while (1) | |
1587 | { | |
1588 | n = target_read_partial (ops, object, annex, &buf[buf_pos], | |
159f81f3 | 1589 | buf_pos, buf_alloc - buf_pos - padding); |
13547ab6 DJ |
1590 | if (n < 0) |
1591 | { | |
1592 | /* An error occurred. */ | |
1593 | xfree (buf); | |
1594 | return -1; | |
1595 | } | |
1596 | else if (n == 0) | |
1597 | { | |
1598 | /* Read all there was. */ | |
1599 | if (buf_pos == 0) | |
1600 | xfree (buf); | |
1601 | else | |
1602 | *buf_p = buf; | |
1603 | return buf_pos; | |
1604 | } | |
1605 | ||
1606 | buf_pos += n; | |
1607 | ||
1608 | /* If the buffer is filling up, expand it. */ | |
1609 | if (buf_alloc < buf_pos * 2) | |
1610 | { | |
1611 | buf_alloc *= 2; | |
1612 | buf = xrealloc (buf, buf_alloc); | |
1613 | } | |
1614 | ||
1615 | QUIT; | |
1616 | } | |
1617 | } | |
1618 | ||
159f81f3 DJ |
1619 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
1620 | the size of the transferred data. See the declaration in "target.h" | |
1621 | function for more information about the return value. */ | |
1622 | ||
1623 | LONGEST | |
1624 | target_read_alloc (struct target_ops *ops, enum target_object object, | |
1625 | const char *annex, gdb_byte **buf_p) | |
1626 | { | |
1627 | return target_read_alloc_1 (ops, object, annex, buf_p, 0); | |
1628 | } | |
1629 | ||
1630 | /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and | |
1631 | returned as a string, allocated using xmalloc. If an error occurs | |
1632 | or the transfer is unsupported, NULL is returned. Empty objects | |
1633 | are returned as allocated but empty strings. A warning is issued | |
1634 | if the result contains any embedded NUL bytes. */ | |
1635 | ||
1636 | char * | |
1637 | target_read_stralloc (struct target_ops *ops, enum target_object object, | |
1638 | const char *annex) | |
1639 | { | |
1640 | gdb_byte *buffer; | |
1641 | LONGEST transferred; | |
1642 | ||
1643 | transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1); | |
1644 | ||
1645 | if (transferred < 0) | |
1646 | return NULL; | |
1647 | ||
1648 | if (transferred == 0) | |
1649 | return xstrdup (""); | |
1650 | ||
1651 | buffer[transferred] = 0; | |
1652 | if (strlen (buffer) < transferred) | |
1653 | warning (_("target object %d, annex %s, " | |
1654 | "contained unexpected null characters"), | |
1655 | (int) object, annex ? annex : "(none)"); | |
1656 | ||
1657 | return (char *) buffer; | |
1658 | } | |
1659 | ||
b6591e8b AC |
1660 | /* Memory transfer methods. */ |
1661 | ||
1662 | void | |
1b0ba102 | 1663 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
1664 | LONGEST len) |
1665 | { | |
1666 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, buf, addr, len) | |
1667 | != len) | |
1668 | memory_error (EIO, addr); | |
1669 | } | |
1670 | ||
1671 | ULONGEST | |
1672 | get_target_memory_unsigned (struct target_ops *ops, | |
1673 | CORE_ADDR addr, int len) | |
1674 | { | |
f6519ebc | 1675 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
1676 | |
1677 | gdb_assert (len <= sizeof (buf)); | |
1678 | get_target_memory (ops, addr, buf, len); | |
1679 | return extract_unsigned_integer (buf, len); | |
1680 | } | |
1681 | ||
c906108c | 1682 | static void |
fba45db2 | 1683 | target_info (char *args, int from_tty) |
c906108c SS |
1684 | { |
1685 | struct target_ops *t; | |
c906108c | 1686 | int has_all_mem = 0; |
c5aa993b | 1687 | |
c906108c | 1688 | if (symfile_objfile != NULL) |
a3f17187 | 1689 | printf_unfiltered (_("Symbols from \"%s\".\n"), symfile_objfile->name); |
c906108c | 1690 | |
258b763a | 1691 | for (t = target_stack; t != NULL; t = t->beneath) |
c906108c | 1692 | { |
c906108c SS |
1693 | if (!t->to_has_memory) |
1694 | continue; | |
1695 | ||
c5aa993b | 1696 | if ((int) (t->to_stratum) <= (int) dummy_stratum) |
c906108c SS |
1697 | continue; |
1698 | if (has_all_mem) | |
a3f17187 | 1699 | printf_unfiltered (_("\tWhile running this, GDB does not access memory from...\n")); |
c5aa993b JM |
1700 | printf_unfiltered ("%s:\n", t->to_longname); |
1701 | (t->to_files_info) (t); | |
c906108c SS |
1702 | has_all_mem = t->to_has_all_memory; |
1703 | } | |
1704 | } | |
1705 | ||
fd79ecee DJ |
1706 | /* This function is called before any new inferior is created, e.g. |
1707 | by running a program, attaching, or connecting to a target. | |
1708 | It cleans up any state from previous invocations which might | |
1709 | change between runs. This is a subset of what target_preopen | |
1710 | resets (things which might change between targets). */ | |
1711 | ||
1712 | void | |
1713 | target_pre_inferior (int from_tty) | |
1714 | { | |
b9db4ced UW |
1715 | /* Clear out solib state. Otherwise the solib state of the previous |
1716 | inferior might have survived and is entirely wrong for the new | |
1717 | target. This has been observed on GNU/Linux using glibc 2.3. How | |
1718 | to reproduce: | |
1719 | ||
1720 | bash$ ./foo& | |
1721 | [1] 4711 | |
1722 | bash$ ./foo& | |
1723 | [1] 4712 | |
1724 | bash$ gdb ./foo | |
1725 | [...] | |
1726 | (gdb) attach 4711 | |
1727 | (gdb) detach | |
1728 | (gdb) attach 4712 | |
1729 | Cannot access memory at address 0xdeadbeef | |
1730 | */ | |
b9db4ced | 1731 | |
50c71eaf PA |
1732 | /* In some OSs, the shared library list is the same/global/shared |
1733 | across inferiors. If code is shared between processes, so are | |
1734 | memory regions and features. */ | |
1735 | if (!gdbarch_has_global_solist (target_gdbarch)) | |
1736 | { | |
1737 | no_shared_libraries (NULL, from_tty); | |
1738 | ||
1739 | invalidate_target_mem_regions (); | |
424163ea | 1740 | |
50c71eaf PA |
1741 | target_clear_description (); |
1742 | } | |
fd79ecee DJ |
1743 | } |
1744 | ||
c906108c SS |
1745 | /* This is to be called by the open routine before it does |
1746 | anything. */ | |
1747 | ||
1748 | void | |
fba45db2 | 1749 | target_preopen (int from_tty) |
c906108c | 1750 | { |
c5aa993b | 1751 | dont_repeat (); |
c906108c SS |
1752 | |
1753 | if (target_has_execution) | |
c5aa993b | 1754 | { |
adf40b2e | 1755 | if (!from_tty |
e2e0b3e5 | 1756 | || query (_("A program is being debugged already. Kill it? "))) |
c5aa993b | 1757 | target_kill (); |
c906108c | 1758 | else |
8a3fe4f8 | 1759 | error (_("Program not killed.")); |
c906108c SS |
1760 | } |
1761 | ||
1762 | /* Calling target_kill may remove the target from the stack. But if | |
1763 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
1764 | /* Leave the exec target, though. The user may be switching from a |
1765 | live process to a core of the same program. */ | |
1766 | pop_all_targets_above (file_stratum, 0); | |
fd79ecee DJ |
1767 | |
1768 | target_pre_inferior (from_tty); | |
c906108c SS |
1769 | } |
1770 | ||
1771 | /* Detach a target after doing deferred register stores. */ | |
1772 | ||
1773 | void | |
fba45db2 | 1774 | target_detach (char *args, int from_tty) |
c906108c | 1775 | { |
136d6dae VP |
1776 | struct target_ops* t; |
1777 | ||
50c71eaf PA |
1778 | if (gdbarch_has_global_solist (target_gdbarch)) |
1779 | /* Don't remove global breakpoints here. They're removed on | |
1780 | disconnection from the target. */ | |
1781 | ; | |
1782 | else | |
1783 | /* If we're in breakpoints-always-inserted mode, have to remove | |
1784 | them before detaching. */ | |
1785 | remove_breakpoints (); | |
74960c60 | 1786 | |
136d6dae VP |
1787 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
1788 | { | |
1789 | if (t->to_detach != NULL) | |
1790 | { | |
1791 | t->to_detach (t, args, from_tty); | |
947b8855 PA |
1792 | if (targetdebug) |
1793 | fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n", | |
1794 | args, from_tty); | |
136d6dae VP |
1795 | return; |
1796 | } | |
1797 | } | |
1798 | ||
1799 | internal_error (__FILE__, __LINE__, "could not find a target to detach"); | |
c906108c SS |
1800 | } |
1801 | ||
6ad8ae5c DJ |
1802 | void |
1803 | target_disconnect (char *args, int from_tty) | |
1804 | { | |
597320e7 DJ |
1805 | struct target_ops *t; |
1806 | ||
50c71eaf PA |
1807 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
1808 | are global across processes, we have to remove them before | |
1809 | disconnecting. */ | |
74960c60 VP |
1810 | remove_breakpoints (); |
1811 | ||
597320e7 DJ |
1812 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
1813 | if (t->to_disconnect != NULL) | |
1814 | { | |
1815 | if (targetdebug) | |
1816 | fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n", | |
1817 | args, from_tty); | |
1818 | t->to_disconnect (t, args, from_tty); | |
1819 | return; | |
1820 | } | |
1821 | ||
1822 | tcomplain (); | |
6ad8ae5c DJ |
1823 | } |
1824 | ||
117de6a9 PA |
1825 | ptid_t |
1826 | target_wait (ptid_t ptid, struct target_waitstatus *status) | |
1827 | { | |
1828 | struct target_ops *t; | |
1829 | ||
1830 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1831 | { | |
1832 | if (t->to_wait != NULL) | |
1833 | { | |
1834 | ptid_t retval = (*t->to_wait) (t, ptid, status); | |
1835 | ||
1836 | if (targetdebug) | |
1837 | { | |
1838 | char *status_string; | |
1839 | ||
1840 | status_string = target_waitstatus_to_string (status); | |
1841 | fprintf_unfiltered (gdb_stdlog, | |
1842 | "target_wait (%d, status) = %d, %s\n", | |
1843 | PIDGET (ptid), PIDGET (retval), | |
1844 | status_string); | |
1845 | xfree (status_string); | |
1846 | } | |
1847 | ||
1848 | return retval; | |
1849 | } | |
1850 | } | |
1851 | ||
1852 | noprocess (); | |
1853 | } | |
1854 | ||
1855 | char * | |
1856 | target_pid_to_str (ptid_t ptid) | |
1857 | { | |
1858 | struct target_ops *t; | |
1859 | ||
1860 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1861 | { | |
1862 | if (t->to_pid_to_str != NULL) | |
1863 | return (*t->to_pid_to_str) (t, ptid); | |
1864 | } | |
1865 | ||
1866 | return normal_pid_to_str (ptid); | |
1867 | } | |
1868 | ||
e1ac3328 VP |
1869 | void |
1870 | target_resume (ptid_t ptid, int step, enum target_signal signal) | |
1871 | { | |
28439f5e PA |
1872 | struct target_ops *t; |
1873 | ||
e1ac3328 | 1874 | dcache_invalidate (target_dcache); |
28439f5e PA |
1875 | |
1876 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1877 | { | |
1878 | if (t->to_resume != NULL) | |
1879 | { | |
1880 | t->to_resume (t, ptid, step, signal); | |
1881 | if (targetdebug) | |
1882 | fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n", | |
1883 | PIDGET (ptid), | |
1884 | step ? "step" : "continue", | |
1885 | target_signal_to_name (signal)); | |
1886 | ||
1887 | set_executing (ptid, 1); | |
1888 | set_running (ptid, 1); | |
1889 | return; | |
1890 | } | |
1891 | } | |
1892 | ||
1893 | noprocess (); | |
e1ac3328 | 1894 | } |
ee057212 DJ |
1895 | /* Look through the list of possible targets for a target that can |
1896 | follow forks. */ | |
1897 | ||
1898 | int | |
1899 | target_follow_fork (int follow_child) | |
1900 | { | |
1901 | struct target_ops *t; | |
1902 | ||
1903 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1904 | { | |
1905 | if (t->to_follow_fork != NULL) | |
1906 | { | |
1907 | int retval = t->to_follow_fork (t, follow_child); | |
1908 | if (targetdebug) | |
1909 | fprintf_unfiltered (gdb_stdlog, "target_follow_fork (%d) = %d\n", | |
1910 | follow_child, retval); | |
1911 | return retval; | |
1912 | } | |
1913 | } | |
1914 | ||
1915 | /* Some target returned a fork event, but did not know how to follow it. */ | |
1916 | internal_error (__FILE__, __LINE__, | |
1917 | "could not find a target to follow fork"); | |
1918 | } | |
1919 | ||
136d6dae VP |
1920 | void |
1921 | target_mourn_inferior (void) | |
1922 | { | |
1923 | struct target_ops *t; | |
1924 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
1925 | { | |
1926 | if (t->to_mourn_inferior != NULL) | |
1927 | { | |
1928 | t->to_mourn_inferior (t); | |
947b8855 PA |
1929 | if (targetdebug) |
1930 | fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n"); | |
136d6dae VP |
1931 | return; |
1932 | } | |
1933 | } | |
1934 | ||
1935 | internal_error (__FILE__, __LINE__, | |
1936 | "could not find a target to follow mourn inferiour"); | |
1937 | } | |
1938 | ||
424163ea DJ |
1939 | /* Look for a target which can describe architectural features, starting |
1940 | from TARGET. If we find one, return its description. */ | |
1941 | ||
1942 | const struct target_desc * | |
1943 | target_read_description (struct target_ops *target) | |
1944 | { | |
1945 | struct target_ops *t; | |
1946 | ||
1947 | for (t = target; t != NULL; t = t->beneath) | |
1948 | if (t->to_read_description != NULL) | |
1949 | { | |
1950 | const struct target_desc *tdesc; | |
1951 | ||
1952 | tdesc = t->to_read_description (t); | |
1953 | if (tdesc) | |
1954 | return tdesc; | |
1955 | } | |
1956 | ||
1957 | return NULL; | |
1958 | } | |
1959 | ||
08388c79 DE |
1960 | /* The default implementation of to_search_memory. |
1961 | This implements a basic search of memory, reading target memory and | |
1962 | performing the search here (as opposed to performing the search in on the | |
1963 | target side with, for example, gdbserver). */ | |
1964 | ||
1965 | int | |
1966 | simple_search_memory (struct target_ops *ops, | |
1967 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
1968 | const gdb_byte *pattern, ULONGEST pattern_len, | |
1969 | CORE_ADDR *found_addrp) | |
1970 | { | |
1971 | /* NOTE: also defined in find.c testcase. */ | |
1972 | #define SEARCH_CHUNK_SIZE 16000 | |
1973 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
1974 | /* Buffer to hold memory contents for searching. */ | |
1975 | gdb_byte *search_buf; | |
1976 | unsigned search_buf_size; | |
1977 | struct cleanup *old_cleanups; | |
1978 | ||
1979 | search_buf_size = chunk_size + pattern_len - 1; | |
1980 | ||
1981 | /* No point in trying to allocate a buffer larger than the search space. */ | |
1982 | if (search_space_len < search_buf_size) | |
1983 | search_buf_size = search_space_len; | |
1984 | ||
1985 | search_buf = malloc (search_buf_size); | |
1986 | if (search_buf == NULL) | |
5e1471f5 | 1987 | error (_("Unable to allocate memory to perform the search.")); |
08388c79 DE |
1988 | old_cleanups = make_cleanup (free_current_contents, &search_buf); |
1989 | ||
1990 | /* Prime the search buffer. */ | |
1991 | ||
1992 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
1993 | search_buf, start_addr, search_buf_size) != search_buf_size) | |
1994 | { | |
5e1471f5 | 1995 | warning (_("Unable to access target memory at %s, halting search."), |
08388c79 DE |
1996 | hex_string (start_addr)); |
1997 | do_cleanups (old_cleanups); | |
1998 | return -1; | |
1999 | } | |
2000 | ||
2001 | /* Perform the search. | |
2002 | ||
2003 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
2004 | When we've scanned N bytes we copy the trailing bytes to the start and | |
2005 | read in another N bytes. */ | |
2006 | ||
2007 | while (search_space_len >= pattern_len) | |
2008 | { | |
2009 | gdb_byte *found_ptr; | |
2010 | unsigned nr_search_bytes = min (search_space_len, search_buf_size); | |
2011 | ||
2012 | found_ptr = memmem (search_buf, nr_search_bytes, | |
2013 | pattern, pattern_len); | |
2014 | ||
2015 | if (found_ptr != NULL) | |
2016 | { | |
2017 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
2018 | *found_addrp = found_addr; | |
2019 | do_cleanups (old_cleanups); | |
2020 | return 1; | |
2021 | } | |
2022 | ||
2023 | /* Not found in this chunk, skip to next chunk. */ | |
2024 | ||
2025 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
2026 | if (search_space_len >= chunk_size) | |
2027 | search_space_len -= chunk_size; | |
2028 | else | |
2029 | search_space_len = 0; | |
2030 | ||
2031 | if (search_space_len >= pattern_len) | |
2032 | { | |
2033 | unsigned keep_len = search_buf_size - chunk_size; | |
2034 | CORE_ADDR read_addr = start_addr + keep_len; | |
2035 | int nr_to_read; | |
2036 | ||
2037 | /* Copy the trailing part of the previous iteration to the front | |
2038 | of the buffer for the next iteration. */ | |
2039 | gdb_assert (keep_len == pattern_len - 1); | |
2040 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
2041 | ||
2042 | nr_to_read = min (search_space_len - keep_len, chunk_size); | |
2043 | ||
2044 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
2045 | search_buf + keep_len, read_addr, | |
2046 | nr_to_read) != nr_to_read) | |
2047 | { | |
5e1471f5 | 2048 | warning (_("Unable to access target memory at %s, halting search."), |
08388c79 DE |
2049 | hex_string (read_addr)); |
2050 | do_cleanups (old_cleanups); | |
2051 | return -1; | |
2052 | } | |
2053 | ||
2054 | start_addr += chunk_size; | |
2055 | } | |
2056 | } | |
2057 | ||
2058 | /* Not found. */ | |
2059 | ||
2060 | do_cleanups (old_cleanups); | |
2061 | return 0; | |
2062 | } | |
2063 | ||
2064 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the | |
2065 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2066 | ||
2067 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2068 | requiring halting of the search (e.g. memory read error). | |
2069 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2070 | ||
2071 | int | |
2072 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2073 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2074 | CORE_ADDR *found_addrp) | |
2075 | { | |
2076 | struct target_ops *t; | |
2077 | int found; | |
2078 | ||
2079 | /* We don't use INHERIT to set current_target.to_search_memory, | |
2080 | so we have to scan the target stack and handle targetdebug | |
2081 | ourselves. */ | |
2082 | ||
2083 | if (targetdebug) | |
2084 | fprintf_unfiltered (gdb_stdlog, "target_search_memory (%s, ...)\n", | |
2085 | hex_string (start_addr)); | |
2086 | ||
2087 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2088 | if (t->to_search_memory != NULL) | |
2089 | break; | |
2090 | ||
2091 | if (t != NULL) | |
2092 | { | |
2093 | found = t->to_search_memory (t, start_addr, search_space_len, | |
2094 | pattern, pattern_len, found_addrp); | |
2095 | } | |
2096 | else | |
2097 | { | |
2098 | /* If a special version of to_search_memory isn't available, use the | |
2099 | simple version. */ | |
2100 | found = simple_search_memory (¤t_target, | |
2101 | start_addr, search_space_len, | |
2102 | pattern, pattern_len, found_addrp); | |
2103 | } | |
2104 | ||
2105 | if (targetdebug) | |
2106 | fprintf_unfiltered (gdb_stdlog, " = %d\n", found); | |
2107 | ||
2108 | return found; | |
2109 | } | |
2110 | ||
8edfe269 DJ |
2111 | /* Look through the currently pushed targets. If none of them will |
2112 | be able to restart the currently running process, issue an error | |
2113 | message. */ | |
2114 | ||
2115 | void | |
2116 | target_require_runnable (void) | |
2117 | { | |
2118 | struct target_ops *t; | |
2119 | ||
2120 | for (t = target_stack; t != NULL; t = t->beneath) | |
2121 | { | |
2122 | /* If this target knows how to create a new program, then | |
2123 | assume we will still be able to after killing the current | |
2124 | one. Either killing and mourning will not pop T, or else | |
2125 | find_default_run_target will find it again. */ | |
2126 | if (t->to_create_inferior != NULL) | |
2127 | return; | |
2128 | ||
2129 | /* Do not worry about thread_stratum targets that can not | |
2130 | create inferiors. Assume they will be pushed again if | |
2131 | necessary, and continue to the process_stratum. */ | |
2132 | if (t->to_stratum == thread_stratum) | |
2133 | continue; | |
2134 | ||
2135 | error (_("\ | |
2136 | The \"%s\" target does not support \"run\". Try \"help target\" or \"continue\"."), | |
2137 | t->to_shortname); | |
2138 | } | |
2139 | ||
2140 | /* This function is only called if the target is running. In that | |
2141 | case there should have been a process_stratum target and it | |
2142 | should either know how to create inferiors, or not... */ | |
2143 | internal_error (__FILE__, __LINE__, "No targets found"); | |
2144 | } | |
2145 | ||
c906108c SS |
2146 | /* Look through the list of possible targets for a target that can |
2147 | execute a run or attach command without any other data. This is | |
2148 | used to locate the default process stratum. | |
2149 | ||
5f667f2d PA |
2150 | If DO_MESG is not NULL, the result is always valid (error() is |
2151 | called for errors); else, return NULL on error. */ | |
c906108c SS |
2152 | |
2153 | static struct target_ops * | |
fba45db2 | 2154 | find_default_run_target (char *do_mesg) |
c906108c SS |
2155 | { |
2156 | struct target_ops **t; | |
2157 | struct target_ops *runable = NULL; | |
2158 | int count; | |
2159 | ||
2160 | count = 0; | |
2161 | ||
2162 | for (t = target_structs; t < target_structs + target_struct_size; | |
2163 | ++t) | |
2164 | { | |
c5aa993b | 2165 | if ((*t)->to_can_run && target_can_run (*t)) |
c906108c SS |
2166 | { |
2167 | runable = *t; | |
2168 | ++count; | |
2169 | } | |
2170 | } | |
2171 | ||
2172 | if (count != 1) | |
5f667f2d PA |
2173 | { |
2174 | if (do_mesg) | |
2175 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
2176 | else | |
2177 | return NULL; | |
2178 | } | |
c906108c SS |
2179 | |
2180 | return runable; | |
2181 | } | |
2182 | ||
2183 | void | |
136d6dae | 2184 | find_default_attach (struct target_ops *ops, char *args, int from_tty) |
c906108c SS |
2185 | { |
2186 | struct target_ops *t; | |
2187 | ||
c5aa993b | 2188 | t = find_default_run_target ("attach"); |
136d6dae | 2189 | (t->to_attach) (t, args, from_tty); |
c906108c SS |
2190 | return; |
2191 | } | |
2192 | ||
c906108c | 2193 | void |
136d6dae VP |
2194 | find_default_create_inferior (struct target_ops *ops, |
2195 | char *exec_file, char *allargs, char **env, | |
c27cda74 | 2196 | int from_tty) |
c906108c SS |
2197 | { |
2198 | struct target_ops *t; | |
2199 | ||
c5aa993b | 2200 | t = find_default_run_target ("run"); |
136d6dae | 2201 | (t->to_create_inferior) (t, exec_file, allargs, env, from_tty); |
c906108c SS |
2202 | return; |
2203 | } | |
2204 | ||
2c0b251b | 2205 | static int |
b84876c2 PA |
2206 | find_default_can_async_p (void) |
2207 | { | |
2208 | struct target_ops *t; | |
2209 | ||
5f667f2d PA |
2210 | /* This may be called before the target is pushed on the stack; |
2211 | look for the default process stratum. If there's none, gdb isn't | |
2212 | configured with a native debugger, and target remote isn't | |
2213 | connected yet. */ | |
2214 | t = find_default_run_target (NULL); | |
2215 | if (t && t->to_can_async_p) | |
b84876c2 PA |
2216 | return (t->to_can_async_p) (); |
2217 | return 0; | |
2218 | } | |
2219 | ||
2c0b251b | 2220 | static int |
b84876c2 PA |
2221 | find_default_is_async_p (void) |
2222 | { | |
2223 | struct target_ops *t; | |
2224 | ||
5f667f2d PA |
2225 | /* This may be called before the target is pushed on the stack; |
2226 | look for the default process stratum. If there's none, gdb isn't | |
2227 | configured with a native debugger, and target remote isn't | |
2228 | connected yet. */ | |
2229 | t = find_default_run_target (NULL); | |
2230 | if (t && t->to_is_async_p) | |
b84876c2 PA |
2231 | return (t->to_is_async_p) (); |
2232 | return 0; | |
2233 | } | |
2234 | ||
2c0b251b | 2235 | static int |
9908b566 VP |
2236 | find_default_supports_non_stop (void) |
2237 | { | |
2238 | struct target_ops *t; | |
2239 | ||
2240 | t = find_default_run_target (NULL); | |
2241 | if (t && t->to_supports_non_stop) | |
2242 | return (t->to_supports_non_stop) (); | |
2243 | return 0; | |
2244 | } | |
2245 | ||
2246 | int | |
2c0b251b | 2247 | target_supports_non_stop (void) |
9908b566 VP |
2248 | { |
2249 | struct target_ops *t; | |
2250 | for (t = ¤t_target; t != NULL; t = t->beneath) | |
2251 | if (t->to_supports_non_stop) | |
2252 | return t->to_supports_non_stop (); | |
2253 | ||
2254 | return 0; | |
2255 | } | |
2256 | ||
2257 | ||
07e059b5 VP |
2258 | char * |
2259 | target_get_osdata (const char *type) | |
2260 | { | |
2261 | char *document; | |
2262 | struct target_ops *t; | |
2263 | ||
739ef7fb PA |
2264 | /* If we're already connected to something that can get us OS |
2265 | related data, use it. Otherwise, try using the native | |
2266 | target. */ | |
2267 | if (current_target.to_stratum >= process_stratum) | |
6d097e65 | 2268 | t = current_target.beneath; |
739ef7fb PA |
2269 | else |
2270 | t = find_default_run_target ("get OS data"); | |
07e059b5 VP |
2271 | |
2272 | if (!t) | |
2273 | return NULL; | |
2274 | ||
6d097e65 | 2275 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
2276 | } |
2277 | ||
e0d24f8d WZ |
2278 | static int |
2279 | default_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
2280 | { | |
ffe5a37e | 2281 | return (len <= gdbarch_ptr_bit (target_gdbarch) / TARGET_CHAR_BIT); |
ccaa32c7 GS |
2282 | } |
2283 | ||
5009afc5 AS |
2284 | static int |
2285 | default_watchpoint_addr_within_range (struct target_ops *target, | |
2286 | CORE_ADDR addr, | |
2287 | CORE_ADDR start, int length) | |
2288 | { | |
2289 | return addr >= start && addr < start + length; | |
2290 | } | |
2291 | ||
c906108c | 2292 | static int |
fba45db2 | 2293 | return_zero (void) |
c906108c SS |
2294 | { |
2295 | return 0; | |
2296 | } | |
2297 | ||
2298 | static int | |
fba45db2 | 2299 | return_one (void) |
c906108c SS |
2300 | { |
2301 | return 1; | |
2302 | } | |
2303 | ||
ccaa32c7 GS |
2304 | static int |
2305 | return_minus_one (void) | |
2306 | { | |
2307 | return -1; | |
2308 | } | |
2309 | ||
6426a772 JM |
2310 | /* |
2311 | * Resize the to_sections pointer. Also make sure that anyone that | |
2312 | * was holding on to an old value of it gets updated. | |
2313 | * Returns the old size. | |
2314 | */ | |
2315 | ||
2316 | int | |
2317 | target_resize_to_sections (struct target_ops *target, int num_added) | |
2318 | { | |
2319 | struct target_ops **t; | |
2320 | struct section_table *old_value; | |
2321 | int old_count; | |
2322 | ||
2323 | old_value = target->to_sections; | |
2324 | ||
2325 | if (target->to_sections) | |
2326 | { | |
2327 | old_count = target->to_sections_end - target->to_sections; | |
2328 | target->to_sections = (struct section_table *) | |
2329 | xrealloc ((char *) target->to_sections, | |
2330 | (sizeof (struct section_table)) * (num_added + old_count)); | |
2331 | } | |
2332 | else | |
2333 | { | |
2334 | old_count = 0; | |
2335 | target->to_sections = (struct section_table *) | |
2336 | xmalloc ((sizeof (struct section_table)) * num_added); | |
2337 | } | |
2338 | target->to_sections_end = target->to_sections + (num_added + old_count); | |
2339 | ||
2340 | /* Check to see if anyone else was pointing to this structure. | |
2341 | If old_value was null, then no one was. */ | |
2bc416ba | 2342 | |
6426a772 JM |
2343 | if (old_value) |
2344 | { | |
2345 | for (t = target_structs; t < target_structs + target_struct_size; | |
2346 | ++t) | |
2347 | { | |
2348 | if ((*t)->to_sections == old_value) | |
2349 | { | |
2350 | (*t)->to_sections = target->to_sections; | |
2351 | (*t)->to_sections_end = target->to_sections_end; | |
2352 | } | |
2353 | } | |
e354df01 NW |
2354 | /* There is a flattened view of the target stack in current_target, |
2355 | so its to_sections pointer might also need updating. */ | |
2356 | if (current_target.to_sections == old_value) | |
2357 | { | |
2358 | current_target.to_sections = target->to_sections; | |
2359 | current_target.to_sections_end = target->to_sections_end; | |
2360 | } | |
6426a772 | 2361 | } |
2bc416ba | 2362 | |
6426a772 JM |
2363 | return old_count; |
2364 | ||
2365 | } | |
2366 | ||
07cd4b97 JB |
2367 | /* Remove all target sections taken from ABFD. |
2368 | ||
2369 | Scan the current target stack for targets whose section tables | |
2370 | refer to sections from BFD, and remove those sections. We use this | |
2371 | when we notice that the inferior has unloaded a shared object, for | |
2372 | example. */ | |
2373 | void | |
2374 | remove_target_sections (bfd *abfd) | |
2375 | { | |
2376 | struct target_ops **t; | |
2377 | ||
2378 | for (t = target_structs; t < target_structs + target_struct_size; t++) | |
2379 | { | |
2380 | struct section_table *src, *dest; | |
2381 | ||
2382 | dest = (*t)->to_sections; | |
2383 | for (src = (*t)->to_sections; src < (*t)->to_sections_end; src++) | |
2384 | if (src->bfd != abfd) | |
2385 | { | |
2386 | /* Keep this section. */ | |
2387 | if (dest < src) *dest = *src; | |
2388 | dest++; | |
2389 | } | |
2390 | ||
2391 | /* If we've dropped any sections, resize the section table. */ | |
2392 | if (dest < src) | |
2393 | target_resize_to_sections (*t, dest - src); | |
2394 | } | |
2395 | } | |
2396 | ||
2397 | ||
2398 | ||
2399 | ||
7a292a7a SS |
2400 | /* Find a single runnable target in the stack and return it. If for |
2401 | some reason there is more than one, return NULL. */ | |
2402 | ||
2403 | struct target_ops * | |
fba45db2 | 2404 | find_run_target (void) |
7a292a7a SS |
2405 | { |
2406 | struct target_ops **t; | |
2407 | struct target_ops *runable = NULL; | |
2408 | int count; | |
c5aa993b | 2409 | |
7a292a7a | 2410 | count = 0; |
c5aa993b | 2411 | |
7a292a7a SS |
2412 | for (t = target_structs; t < target_structs + target_struct_size; ++t) |
2413 | { | |
c5aa993b | 2414 | if ((*t)->to_can_run && target_can_run (*t)) |
7a292a7a SS |
2415 | { |
2416 | runable = *t; | |
2417 | ++count; | |
2418 | } | |
2419 | } | |
c5aa993b | 2420 | |
7a292a7a SS |
2421 | return (count == 1 ? runable : NULL); |
2422 | } | |
2423 | ||
ed9a39eb JM |
2424 | /* Find a single core_stratum target in the list of targets and return it. |
2425 | If for some reason there is more than one, return NULL. */ | |
2426 | ||
c906108c | 2427 | struct target_ops * |
fba45db2 | 2428 | find_core_target (void) |
c906108c SS |
2429 | { |
2430 | struct target_ops **t; | |
2431 | struct target_ops *runable = NULL; | |
2432 | int count; | |
c5aa993b | 2433 | |
c906108c | 2434 | count = 0; |
c5aa993b | 2435 | |
c906108c SS |
2436 | for (t = target_structs; t < target_structs + target_struct_size; |
2437 | ++t) | |
2438 | { | |
2439 | if ((*t)->to_stratum == core_stratum) | |
2440 | { | |
2441 | runable = *t; | |
2442 | ++count; | |
2443 | } | |
2444 | } | |
c5aa993b JM |
2445 | |
2446 | return (count == 1 ? runable : NULL); | |
c906108c | 2447 | } |
ed9a39eb JM |
2448 | |
2449 | /* | |
2450 | * Find the next target down the stack from the specified target. | |
2451 | */ | |
2452 | ||
2453 | struct target_ops * | |
fba45db2 | 2454 | find_target_beneath (struct target_ops *t) |
ed9a39eb | 2455 | { |
258b763a | 2456 | return t->beneath; |
ed9a39eb JM |
2457 | } |
2458 | ||
c906108c SS |
2459 | \f |
2460 | /* The inferior process has died. Long live the inferior! */ | |
2461 | ||
2462 | void | |
fba45db2 | 2463 | generic_mourn_inferior (void) |
c906108c | 2464 | { |
7f9f62ba | 2465 | ptid_t ptid; |
c906108c | 2466 | |
7f9f62ba | 2467 | ptid = inferior_ptid; |
39f77062 | 2468 | inferior_ptid = null_ptid; |
7f9f62ba PA |
2469 | |
2470 | if (!ptid_equal (ptid, null_ptid)) | |
2471 | { | |
2472 | int pid = ptid_get_pid (ptid); | |
2473 | delete_inferior (pid); | |
2474 | } | |
2475 | ||
c906108c SS |
2476 | breakpoint_init_inferior (inf_exited); |
2477 | registers_changed (); | |
2478 | ||
c906108c SS |
2479 | reopen_exec_file (); |
2480 | reinit_frame_cache (); | |
2481 | ||
9a4105ab AC |
2482 | if (deprecated_detach_hook) |
2483 | deprecated_detach_hook (); | |
c906108c SS |
2484 | } |
2485 | \f | |
8807d78b | 2486 | /* Helper function for child_wait and the derivatives of child_wait. |
c906108c SS |
2487 | HOSTSTATUS is the waitstatus from wait() or the equivalent; store our |
2488 | translation of that in OURSTATUS. */ | |
2489 | void | |
fba45db2 | 2490 | store_waitstatus (struct target_waitstatus *ourstatus, int hoststatus) |
c906108c | 2491 | { |
c906108c SS |
2492 | if (WIFEXITED (hoststatus)) |
2493 | { | |
2494 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
2495 | ourstatus->value.integer = WEXITSTATUS (hoststatus); | |
2496 | } | |
2497 | else if (!WIFSTOPPED (hoststatus)) | |
2498 | { | |
2499 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
2500 | ourstatus->value.sig = target_signal_from_host (WTERMSIG (hoststatus)); | |
2501 | } | |
2502 | else | |
2503 | { | |
2504 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
2505 | ourstatus->value.sig = target_signal_from_host (WSTOPSIG (hoststatus)); | |
2506 | } | |
2507 | } | |
2508 | \f | |
fd0a2a6f MK |
2509 | /* Convert a normal process ID to a string. Returns the string in a |
2510 | static buffer. */ | |
c906108c SS |
2511 | |
2512 | char * | |
39f77062 | 2513 | normal_pid_to_str (ptid_t ptid) |
c906108c | 2514 | { |
fd0a2a6f | 2515 | static char buf[32]; |
c906108c | 2516 | |
5fff8fc0 | 2517 | xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid)); |
c906108c SS |
2518 | return buf; |
2519 | } | |
2520 | ||
2c0b251b | 2521 | static char * |
117de6a9 PA |
2522 | dummy_pid_to_str (struct target_ops *ops, ptid_t ptid) |
2523 | { | |
2524 | return normal_pid_to_str (ptid); | |
2525 | } | |
2526 | ||
be4d1333 | 2527 | /* Error-catcher for target_find_memory_regions */ |
be4d1333 MS |
2528 | static int dummy_find_memory_regions (int (*ignore1) (), void *ignore2) |
2529 | { | |
8a3fe4f8 | 2530 | error (_("No target.")); |
be4d1333 MS |
2531 | return 0; |
2532 | } | |
2533 | ||
2534 | /* Error-catcher for target_make_corefile_notes */ | |
be4d1333 MS |
2535 | static char * dummy_make_corefile_notes (bfd *ignore1, int *ignore2) |
2536 | { | |
8a3fe4f8 | 2537 | error (_("No target.")); |
be4d1333 MS |
2538 | return NULL; |
2539 | } | |
2540 | ||
c906108c SS |
2541 | /* Set up the handful of non-empty slots needed by the dummy target |
2542 | vector. */ | |
2543 | ||
2544 | static void | |
fba45db2 | 2545 | init_dummy_target (void) |
c906108c SS |
2546 | { |
2547 | dummy_target.to_shortname = "None"; | |
2548 | dummy_target.to_longname = "None"; | |
2549 | dummy_target.to_doc = ""; | |
2550 | dummy_target.to_attach = find_default_attach; | |
136d6dae VP |
2551 | dummy_target.to_detach = |
2552 | (void (*)(struct target_ops *, char *, int))target_ignore; | |
c906108c | 2553 | dummy_target.to_create_inferior = find_default_create_inferior; |
b84876c2 PA |
2554 | dummy_target.to_can_async_p = find_default_can_async_p; |
2555 | dummy_target.to_is_async_p = find_default_is_async_p; | |
9908b566 | 2556 | dummy_target.to_supports_non_stop = find_default_supports_non_stop; |
117de6a9 | 2557 | dummy_target.to_pid_to_str = dummy_pid_to_str; |
c906108c | 2558 | dummy_target.to_stratum = dummy_stratum; |
be4d1333 MS |
2559 | dummy_target.to_find_memory_regions = dummy_find_memory_regions; |
2560 | dummy_target.to_make_corefile_notes = dummy_make_corefile_notes; | |
0b603eba | 2561 | dummy_target.to_xfer_partial = default_xfer_partial; |
c906108c SS |
2562 | dummy_target.to_magic = OPS_MAGIC; |
2563 | } | |
c906108c | 2564 | \f |
c906108c | 2565 | static void |
fba45db2 | 2566 | debug_to_open (char *args, int from_tty) |
c906108c SS |
2567 | { |
2568 | debug_target.to_open (args, from_tty); | |
2569 | ||
96baa820 | 2570 | fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty); |
c906108c SS |
2571 | } |
2572 | ||
f1c07ab0 AC |
2573 | void |
2574 | target_close (struct target_ops *targ, int quitting) | |
2575 | { | |
2576 | if (targ->to_xclose != NULL) | |
2577 | targ->to_xclose (targ, quitting); | |
2578 | else if (targ->to_close != NULL) | |
2579 | targ->to_close (quitting); | |
947b8855 PA |
2580 | |
2581 | if (targetdebug) | |
2582 | fprintf_unfiltered (gdb_stdlog, "target_close (%d)\n", quitting); | |
f1c07ab0 AC |
2583 | } |
2584 | ||
136d6dae VP |
2585 | void |
2586 | target_attach (char *args, int from_tty) | |
2587 | { | |
2588 | struct target_ops *t; | |
2589 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2590 | { | |
2591 | if (t->to_attach != NULL) | |
2592 | { | |
2593 | t->to_attach (t, args, from_tty); | |
947b8855 PA |
2594 | if (targetdebug) |
2595 | fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n", | |
2596 | args, from_tty); | |
136d6dae VP |
2597 | return; |
2598 | } | |
2599 | } | |
2600 | ||
2601 | internal_error (__FILE__, __LINE__, | |
2602 | "could not find a target to attach"); | |
2603 | } | |
2604 | ||
28439f5e PA |
2605 | int |
2606 | target_thread_alive (ptid_t ptid) | |
c906108c | 2607 | { |
28439f5e PA |
2608 | struct target_ops *t; |
2609 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2610 | { | |
2611 | if (t->to_thread_alive != NULL) | |
2612 | { | |
2613 | int retval; | |
c906108c | 2614 | |
28439f5e PA |
2615 | retval = t->to_thread_alive (t, ptid); |
2616 | if (targetdebug) | |
2617 | fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n", | |
2618 | PIDGET (ptid), retval); | |
2619 | ||
2620 | return retval; | |
2621 | } | |
2622 | } | |
2623 | ||
2624 | return 0; | |
2625 | } | |
2626 | ||
2627 | void | |
2628 | target_find_new_threads (void) | |
2629 | { | |
2630 | struct target_ops *t; | |
2631 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2632 | { | |
2633 | if (t->to_find_new_threads != NULL) | |
2634 | { | |
2635 | t->to_find_new_threads (t); | |
2636 | if (targetdebug) | |
2637 | fprintf_unfiltered (gdb_stdlog, "target_find_new_threads ()\n"); | |
2638 | ||
2639 | return; | |
2640 | } | |
2641 | } | |
c906108c SS |
2642 | } |
2643 | ||
c906108c | 2644 | static void |
28439f5e | 2645 | debug_to_post_attach (int pid) |
c906108c | 2646 | { |
28439f5e | 2647 | debug_target.to_post_attach (pid); |
c906108c | 2648 | |
28439f5e | 2649 | fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid); |
c906108c SS |
2650 | } |
2651 | ||
f00150c9 DE |
2652 | /* Return a pretty printed form of target_waitstatus. |
2653 | Space for the result is malloc'd, caller must free. */ | |
c906108c | 2654 | |
f00150c9 DE |
2655 | char * |
2656 | target_waitstatus_to_string (const struct target_waitstatus *ws) | |
2657 | { | |
2658 | const char *kind_str = "status->kind = "; | |
c906108c | 2659 | |
f00150c9 | 2660 | switch (ws->kind) |
c906108c SS |
2661 | { |
2662 | case TARGET_WAITKIND_EXITED: | |
f00150c9 DE |
2663 | return xstrprintf ("%sexited, status = %d", |
2664 | kind_str, ws->value.integer); | |
c906108c | 2665 | case TARGET_WAITKIND_STOPPED: |
f00150c9 DE |
2666 | return xstrprintf ("%sstopped, signal = %s", |
2667 | kind_str, target_signal_to_name (ws->value.sig)); | |
c906108c | 2668 | case TARGET_WAITKIND_SIGNALLED: |
f00150c9 DE |
2669 | return xstrprintf ("%ssignalled, signal = %s", |
2670 | kind_str, target_signal_to_name (ws->value.sig)); | |
c906108c | 2671 | case TARGET_WAITKIND_LOADED: |
f00150c9 | 2672 | return xstrprintf ("%sloaded", kind_str); |
c906108c | 2673 | case TARGET_WAITKIND_FORKED: |
f00150c9 | 2674 | return xstrprintf ("%sforked", kind_str); |
c906108c | 2675 | case TARGET_WAITKIND_VFORKED: |
f00150c9 | 2676 | return xstrprintf ("%svforked", kind_str); |
c906108c | 2677 | case TARGET_WAITKIND_EXECD: |
f00150c9 DE |
2678 | return xstrprintf ("%sexecd", kind_str); |
2679 | case TARGET_WAITKIND_SYSCALL_ENTRY: | |
2680 | return xstrprintf ("%ssyscall-entry", kind_str); | |
2681 | case TARGET_WAITKIND_SYSCALL_RETURN: | |
2682 | return xstrprintf ("%ssyscall-return", kind_str); | |
c906108c | 2683 | case TARGET_WAITKIND_SPURIOUS: |
f00150c9 DE |
2684 | return xstrprintf ("%sspurious", kind_str); |
2685 | case TARGET_WAITKIND_IGNORE: | |
2686 | return xstrprintf ("%signore", kind_str); | |
2687 | case TARGET_WAITKIND_NO_HISTORY: | |
2688 | return xstrprintf ("%sno-history", kind_str); | |
c906108c | 2689 | default: |
f00150c9 | 2690 | return xstrprintf ("%sunknown???", kind_str); |
c906108c | 2691 | } |
f00150c9 DE |
2692 | } |
2693 | ||
bf0c5130 | 2694 | static void |
56be3814 UW |
2695 | debug_print_register (const char * func, |
2696 | struct regcache *regcache, int regno) | |
bf0c5130 | 2697 | { |
f8d29908 | 2698 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
bf0c5130 | 2699 | fprintf_unfiltered (gdb_stdlog, "%s ", func); |
f8d29908 | 2700 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) |
f8d29908 UW |
2701 | && gdbarch_register_name (gdbarch, regno) != NULL |
2702 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') | |
2703 | fprintf_unfiltered (gdb_stdlog, "(%s)", | |
2704 | gdbarch_register_name (gdbarch, regno)); | |
bf0c5130 AC |
2705 | else |
2706 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); | |
0ff58721 | 2707 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) |
bf0c5130 | 2708 | { |
f8d29908 | 2709 | int i, size = register_size (gdbarch, regno); |
d9d9c31f | 2710 | unsigned char buf[MAX_REGISTER_SIZE]; |
0ff58721 | 2711 | regcache_raw_collect (regcache, regno, buf); |
bf0c5130 | 2712 | fprintf_unfiltered (gdb_stdlog, " = "); |
81c4a259 | 2713 | for (i = 0; i < size; i++) |
bf0c5130 AC |
2714 | { |
2715 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); | |
2716 | } | |
81c4a259 | 2717 | if (size <= sizeof (LONGEST)) |
bf0c5130 | 2718 | { |
81c4a259 | 2719 | ULONGEST val = extract_unsigned_integer (buf, size); |
0b1553bc UW |
2720 | fprintf_unfiltered (gdb_stdlog, " %s %s", |
2721 | core_addr_to_string_nz (val), plongest (val)); | |
bf0c5130 AC |
2722 | } |
2723 | } | |
2724 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
2725 | } | |
2726 | ||
28439f5e PA |
2727 | void |
2728 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 2729 | { |
28439f5e PA |
2730 | struct target_ops *t; |
2731 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2732 | { | |
2733 | if (t->to_fetch_registers != NULL) | |
2734 | { | |
2735 | t->to_fetch_registers (t, regcache, regno); | |
2736 | if (targetdebug) | |
2737 | debug_print_register ("target_fetch_registers", regcache, regno); | |
2738 | return; | |
2739 | } | |
2740 | } | |
c906108c SS |
2741 | } |
2742 | ||
28439f5e PA |
2743 | void |
2744 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 2745 | { |
28439f5e PA |
2746 | |
2747 | struct target_ops *t; | |
2748 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
2749 | { | |
2750 | if (t->to_store_registers != NULL) | |
2751 | { | |
2752 | t->to_store_registers (t, regcache, regno); | |
2753 | if (targetdebug) | |
2754 | { | |
2755 | debug_print_register ("target_store_registers", regcache, regno); | |
2756 | } | |
2757 | return; | |
2758 | } | |
2759 | } | |
2760 | ||
2761 | noprocess (); | |
c906108c SS |
2762 | } |
2763 | ||
2764 | static void | |
316f2060 | 2765 | debug_to_prepare_to_store (struct regcache *regcache) |
c906108c | 2766 | { |
316f2060 | 2767 | debug_target.to_prepare_to_store (regcache); |
c906108c | 2768 | |
96baa820 | 2769 | fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n"); |
c906108c SS |
2770 | } |
2771 | ||
2772 | static int | |
961cb7b5 | 2773 | deprecated_debug_xfer_memory (CORE_ADDR memaddr, bfd_byte *myaddr, int len, |
c8e73a31 AC |
2774 | int write, struct mem_attrib *attrib, |
2775 | struct target_ops *target) | |
c906108c SS |
2776 | { |
2777 | int retval; | |
2778 | ||
c8e73a31 AC |
2779 | retval = debug_target.deprecated_xfer_memory (memaddr, myaddr, len, write, |
2780 | attrib, target); | |
c906108c | 2781 | |
96baa820 | 2782 | fprintf_unfiltered (gdb_stdlog, |
53b71562 JB |
2783 | "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d", |
2784 | paddress (memaddr), len, write ? "write" : "read", | |
2785 | retval); | |
c906108c | 2786 | |
c906108c SS |
2787 | if (retval > 0) |
2788 | { | |
2789 | int i; | |
2790 | ||
96baa820 | 2791 | fputs_unfiltered (", bytes =", gdb_stdlog); |
c906108c SS |
2792 | for (i = 0; i < retval; i++) |
2793 | { | |
53b71562 | 2794 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
333dabeb DJ |
2795 | { |
2796 | if (targetdebug < 2 && i > 0) | |
2797 | { | |
2798 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
2799 | break; | |
2800 | } | |
2801 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
2802 | } | |
2bc416ba | 2803 | |
96baa820 | 2804 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
c906108c SS |
2805 | } |
2806 | } | |
2807 | ||
96baa820 | 2808 | fputc_unfiltered ('\n', gdb_stdlog); |
c906108c SS |
2809 | |
2810 | return retval; | |
2811 | } | |
2812 | ||
2813 | static void | |
fba45db2 | 2814 | debug_to_files_info (struct target_ops *target) |
c906108c SS |
2815 | { |
2816 | debug_target.to_files_info (target); | |
2817 | ||
96baa820 | 2818 | fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n"); |
c906108c SS |
2819 | } |
2820 | ||
2821 | static int | |
8181d85f | 2822 | debug_to_insert_breakpoint (struct bp_target_info *bp_tgt) |
c906108c SS |
2823 | { |
2824 | int retval; | |
2825 | ||
8181d85f | 2826 | retval = debug_target.to_insert_breakpoint (bp_tgt); |
c906108c | 2827 | |
96baa820 | 2828 | fprintf_unfiltered (gdb_stdlog, |
104c1213 | 2829 | "target_insert_breakpoint (0x%lx, xxx) = %ld\n", |
8181d85f | 2830 | (unsigned long) bp_tgt->placed_address, |
104c1213 | 2831 | (unsigned long) retval); |
c906108c SS |
2832 | return retval; |
2833 | } | |
2834 | ||
2835 | static int | |
8181d85f | 2836 | debug_to_remove_breakpoint (struct bp_target_info *bp_tgt) |
c906108c SS |
2837 | { |
2838 | int retval; | |
2839 | ||
8181d85f | 2840 | retval = debug_target.to_remove_breakpoint (bp_tgt); |
c906108c | 2841 | |
96baa820 | 2842 | fprintf_unfiltered (gdb_stdlog, |
104c1213 | 2843 | "target_remove_breakpoint (0x%lx, xxx) = %ld\n", |
8181d85f | 2844 | (unsigned long) bp_tgt->placed_address, |
104c1213 | 2845 | (unsigned long) retval); |
c906108c SS |
2846 | return retval; |
2847 | } | |
2848 | ||
ccaa32c7 GS |
2849 | static int |
2850 | debug_to_can_use_hw_breakpoint (int type, int cnt, int from_tty) | |
2851 | { | |
2852 | int retval; | |
2853 | ||
2854 | retval = debug_target.to_can_use_hw_breakpoint (type, cnt, from_tty); | |
2855 | ||
2856 | fprintf_unfiltered (gdb_stdlog, | |
2857 | "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n", | |
2858 | (unsigned long) type, | |
2859 | (unsigned long) cnt, | |
2860 | (unsigned long) from_tty, | |
2861 | (unsigned long) retval); | |
2862 | return retval; | |
2863 | } | |
2864 | ||
e0d24f8d WZ |
2865 | static int |
2866 | debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
2867 | { | |
2868 | CORE_ADDR retval; | |
2869 | ||
2870 | retval = debug_target.to_region_ok_for_hw_watchpoint (addr, len); | |
2871 | ||
2872 | fprintf_unfiltered (gdb_stdlog, | |
2873 | "TARGET_REGION_OK_FOR_HW_WATCHPOINT (%ld, %ld) = 0x%lx\n", | |
2874 | (unsigned long) addr, | |
2875 | (unsigned long) len, | |
2876 | (unsigned long) retval); | |
2877 | return retval; | |
2878 | } | |
2879 | ||
ccaa32c7 GS |
2880 | static int |
2881 | debug_to_stopped_by_watchpoint (void) | |
2882 | { | |
2883 | int retval; | |
2884 | ||
2885 | retval = debug_target.to_stopped_by_watchpoint (); | |
2886 | ||
2887 | fprintf_unfiltered (gdb_stdlog, | |
2888 | "STOPPED_BY_WATCHPOINT () = %ld\n", | |
2889 | (unsigned long) retval); | |
2890 | return retval; | |
2891 | } | |
2892 | ||
4aa7a7f5 JJ |
2893 | static int |
2894 | debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr) | |
ccaa32c7 | 2895 | { |
4aa7a7f5 | 2896 | int retval; |
ccaa32c7 | 2897 | |
4aa7a7f5 | 2898 | retval = debug_target.to_stopped_data_address (target, addr); |
ccaa32c7 GS |
2899 | |
2900 | fprintf_unfiltered (gdb_stdlog, | |
4aa7a7f5 JJ |
2901 | "target_stopped_data_address ([0x%lx]) = %ld\n", |
2902 | (unsigned long)*addr, | |
2903 | (unsigned long)retval); | |
ccaa32c7 GS |
2904 | return retval; |
2905 | } | |
2906 | ||
5009afc5 AS |
2907 | static int |
2908 | debug_to_watchpoint_addr_within_range (struct target_ops *target, | |
2909 | CORE_ADDR addr, | |
2910 | CORE_ADDR start, int length) | |
2911 | { | |
2912 | int retval; | |
2913 | ||
2914 | retval = debug_target.to_watchpoint_addr_within_range (target, addr, | |
2915 | start, length); | |
2916 | ||
2917 | fprintf_filtered (gdb_stdlog, | |
2918 | "target_watchpoint_addr_within_range (0x%lx, 0x%lx, %d) = %d\n", | |
2919 | (unsigned long) addr, (unsigned long) start, length, | |
2920 | retval); | |
2921 | return retval; | |
2922 | } | |
2923 | ||
ccaa32c7 | 2924 | static int |
8181d85f | 2925 | debug_to_insert_hw_breakpoint (struct bp_target_info *bp_tgt) |
ccaa32c7 GS |
2926 | { |
2927 | int retval; | |
2928 | ||
8181d85f | 2929 | retval = debug_target.to_insert_hw_breakpoint (bp_tgt); |
ccaa32c7 GS |
2930 | |
2931 | fprintf_unfiltered (gdb_stdlog, | |
2932 | "target_insert_hw_breakpoint (0x%lx, xxx) = %ld\n", | |
8181d85f | 2933 | (unsigned long) bp_tgt->placed_address, |
ccaa32c7 GS |
2934 | (unsigned long) retval); |
2935 | return retval; | |
2936 | } | |
2937 | ||
2938 | static int | |
8181d85f | 2939 | debug_to_remove_hw_breakpoint (struct bp_target_info *bp_tgt) |
ccaa32c7 GS |
2940 | { |
2941 | int retval; | |
2942 | ||
8181d85f | 2943 | retval = debug_target.to_remove_hw_breakpoint (bp_tgt); |
ccaa32c7 GS |
2944 | |
2945 | fprintf_unfiltered (gdb_stdlog, | |
2946 | "target_remove_hw_breakpoint (0x%lx, xxx) = %ld\n", | |
8181d85f | 2947 | (unsigned long) bp_tgt->placed_address, |
ccaa32c7 GS |
2948 | (unsigned long) retval); |
2949 | return retval; | |
2950 | } | |
2951 | ||
2952 | static int | |
2953 | debug_to_insert_watchpoint (CORE_ADDR addr, int len, int type) | |
2954 | { | |
2955 | int retval; | |
2956 | ||
2957 | retval = debug_target.to_insert_watchpoint (addr, len, type); | |
2958 | ||
2959 | fprintf_unfiltered (gdb_stdlog, | |
2960 | "target_insert_watchpoint (0x%lx, %d, %d) = %ld\n", | |
2961 | (unsigned long) addr, len, type, (unsigned long) retval); | |
2962 | return retval; | |
2963 | } | |
2964 | ||
2965 | static int | |
2966 | debug_to_remove_watchpoint (CORE_ADDR addr, int len, int type) | |
2967 | { | |
2968 | int retval; | |
2969 | ||
ecde4882 | 2970 | retval = debug_target.to_remove_watchpoint (addr, len, type); |
ccaa32c7 GS |
2971 | |
2972 | fprintf_unfiltered (gdb_stdlog, | |
ecde4882 | 2973 | "target_remove_watchpoint (0x%lx, %d, %d) = %ld\n", |
ccaa32c7 GS |
2974 | (unsigned long) addr, len, type, (unsigned long) retval); |
2975 | return retval; | |
2976 | } | |
2977 | ||
c906108c | 2978 | static void |
fba45db2 | 2979 | debug_to_terminal_init (void) |
c906108c SS |
2980 | { |
2981 | debug_target.to_terminal_init (); | |
2982 | ||
96baa820 | 2983 | fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n"); |
c906108c SS |
2984 | } |
2985 | ||
2986 | static void | |
fba45db2 | 2987 | debug_to_terminal_inferior (void) |
c906108c SS |
2988 | { |
2989 | debug_target.to_terminal_inferior (); | |
2990 | ||
96baa820 | 2991 | fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n"); |
c906108c SS |
2992 | } |
2993 | ||
2994 | static void | |
fba45db2 | 2995 | debug_to_terminal_ours_for_output (void) |
c906108c SS |
2996 | { |
2997 | debug_target.to_terminal_ours_for_output (); | |
2998 | ||
96baa820 | 2999 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n"); |
c906108c SS |
3000 | } |
3001 | ||
3002 | static void | |
fba45db2 | 3003 | debug_to_terminal_ours (void) |
c906108c SS |
3004 | { |
3005 | debug_target.to_terminal_ours (); | |
3006 | ||
96baa820 | 3007 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n"); |
c906108c SS |
3008 | } |
3009 | ||
a790ad35 SC |
3010 | static void |
3011 | debug_to_terminal_save_ours (void) | |
3012 | { | |
3013 | debug_target.to_terminal_save_ours (); | |
3014 | ||
3015 | fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n"); | |
3016 | } | |
3017 | ||
c906108c | 3018 | static void |
fba45db2 | 3019 | debug_to_terminal_info (char *arg, int from_tty) |
c906108c SS |
3020 | { |
3021 | debug_target.to_terminal_info (arg, from_tty); | |
3022 | ||
96baa820 | 3023 | fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg, |
c906108c SS |
3024 | from_tty); |
3025 | } | |
3026 | ||
3027 | static void | |
fba45db2 | 3028 | debug_to_kill (void) |
c906108c SS |
3029 | { |
3030 | debug_target.to_kill (); | |
3031 | ||
96baa820 | 3032 | fprintf_unfiltered (gdb_stdlog, "target_kill ()\n"); |
c906108c SS |
3033 | } |
3034 | ||
3035 | static void | |
fba45db2 | 3036 | debug_to_load (char *args, int from_tty) |
c906108c SS |
3037 | { |
3038 | debug_target.to_load (args, from_tty); | |
3039 | ||
96baa820 | 3040 | fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty); |
c906108c SS |
3041 | } |
3042 | ||
3043 | static int | |
fba45db2 | 3044 | debug_to_lookup_symbol (char *name, CORE_ADDR *addrp) |
c906108c SS |
3045 | { |
3046 | int retval; | |
3047 | ||
3048 | retval = debug_target.to_lookup_symbol (name, addrp); | |
3049 | ||
96baa820 | 3050 | fprintf_unfiltered (gdb_stdlog, "target_lookup_symbol (%s, xxx)\n", name); |
c906108c SS |
3051 | |
3052 | return retval; | |
3053 | } | |
3054 | ||
c906108c | 3055 | static void |
39f77062 | 3056 | debug_to_post_startup_inferior (ptid_t ptid) |
c906108c | 3057 | { |
39f77062 | 3058 | debug_target.to_post_startup_inferior (ptid); |
c906108c | 3059 | |
96baa820 | 3060 | fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n", |
39f77062 | 3061 | PIDGET (ptid)); |
c906108c SS |
3062 | } |
3063 | ||
3064 | static void | |
fba45db2 | 3065 | debug_to_acknowledge_created_inferior (int pid) |
c906108c SS |
3066 | { |
3067 | debug_target.to_acknowledge_created_inferior (pid); | |
3068 | ||
96baa820 | 3069 | fprintf_unfiltered (gdb_stdlog, "target_acknowledge_created_inferior (%d)\n", |
c906108c SS |
3070 | pid); |
3071 | } | |
3072 | ||
fa113d1a | 3073 | static void |
fba45db2 | 3074 | debug_to_insert_fork_catchpoint (int pid) |
c906108c | 3075 | { |
fa113d1a | 3076 | debug_target.to_insert_fork_catchpoint (pid); |
c906108c | 3077 | |
fa113d1a AC |
3078 | fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d)\n", |
3079 | pid); | |
c906108c SS |
3080 | } |
3081 | ||
3082 | static int | |
fba45db2 | 3083 | debug_to_remove_fork_catchpoint (int pid) |
c906108c | 3084 | { |
c5aa993b | 3085 | int retval; |
c906108c SS |
3086 | |
3087 | retval = debug_target.to_remove_fork_catchpoint (pid); | |
3088 | ||
96baa820 | 3089 | fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n", |
c5aa993b | 3090 | pid, retval); |
c906108c SS |
3091 | |
3092 | return retval; | |
3093 | } | |
3094 | ||
fa113d1a | 3095 | static void |
fba45db2 | 3096 | debug_to_insert_vfork_catchpoint (int pid) |
c906108c | 3097 | { |
fa113d1a | 3098 | debug_target.to_insert_vfork_catchpoint (pid); |
c906108c | 3099 | |
fa113d1a AC |
3100 | fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d)\n", |
3101 | pid); | |
c906108c SS |
3102 | } |
3103 | ||
3104 | static int | |
fba45db2 | 3105 | debug_to_remove_vfork_catchpoint (int pid) |
c906108c | 3106 | { |
c5aa993b | 3107 | int retval; |
c906108c SS |
3108 | |
3109 | retval = debug_target.to_remove_vfork_catchpoint (pid); | |
3110 | ||
96baa820 | 3111 | fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n", |
c5aa993b | 3112 | pid, retval); |
c906108c SS |
3113 | |
3114 | return retval; | |
3115 | } | |
3116 | ||
fa113d1a | 3117 | static void |
fba45db2 | 3118 | debug_to_insert_exec_catchpoint (int pid) |
c906108c | 3119 | { |
fa113d1a | 3120 | debug_target.to_insert_exec_catchpoint (pid); |
c906108c | 3121 | |
fa113d1a AC |
3122 | fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d)\n", |
3123 | pid); | |
c906108c SS |
3124 | } |
3125 | ||
3126 | static int | |
fba45db2 | 3127 | debug_to_remove_exec_catchpoint (int pid) |
c906108c | 3128 | { |
c5aa993b | 3129 | int retval; |
c906108c SS |
3130 | |
3131 | retval = debug_target.to_remove_exec_catchpoint (pid); | |
3132 | ||
96baa820 | 3133 | fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n", |
c5aa993b | 3134 | pid, retval); |
c906108c SS |
3135 | |
3136 | return retval; | |
3137 | } | |
3138 | ||
c906108c | 3139 | static int |
fba45db2 | 3140 | debug_to_has_exited (int pid, int wait_status, int *exit_status) |
c906108c | 3141 | { |
c5aa993b | 3142 | int has_exited; |
c906108c SS |
3143 | |
3144 | has_exited = debug_target.to_has_exited (pid, wait_status, exit_status); | |
3145 | ||
96baa820 | 3146 | fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n", |
c5aa993b | 3147 | pid, wait_status, *exit_status, has_exited); |
c906108c SS |
3148 | |
3149 | return has_exited; | |
3150 | } | |
3151 | ||
c906108c | 3152 | static int |
fba45db2 | 3153 | debug_to_can_run (void) |
c906108c SS |
3154 | { |
3155 | int retval; | |
3156 | ||
3157 | retval = debug_target.to_can_run (); | |
3158 | ||
96baa820 | 3159 | fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval); |
c906108c SS |
3160 | |
3161 | return retval; | |
3162 | } | |
3163 | ||
3164 | static void | |
39f77062 | 3165 | debug_to_notice_signals (ptid_t ptid) |
c906108c | 3166 | { |
39f77062 | 3167 | debug_target.to_notice_signals (ptid); |
c906108c | 3168 | |
39f77062 KB |
3169 | fprintf_unfiltered (gdb_stdlog, "target_notice_signals (%d)\n", |
3170 | PIDGET (ptid)); | |
c906108c SS |
3171 | } |
3172 | ||
c906108c | 3173 | static void |
94cc34af | 3174 | debug_to_stop (ptid_t ptid) |
c906108c | 3175 | { |
94cc34af | 3176 | debug_target.to_stop (ptid); |
c906108c | 3177 | |
94cc34af PA |
3178 | fprintf_unfiltered (gdb_stdlog, "target_stop (%s)\n", |
3179 | target_pid_to_str (ptid)); | |
c906108c SS |
3180 | } |
3181 | ||
96baa820 JM |
3182 | static void |
3183 | debug_to_rcmd (char *command, | |
d9fcf2fb | 3184 | struct ui_file *outbuf) |
96baa820 JM |
3185 | { |
3186 | debug_target.to_rcmd (command, outbuf); | |
3187 | fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command); | |
3188 | } | |
3189 | ||
c906108c | 3190 | static char * |
fba45db2 | 3191 | debug_to_pid_to_exec_file (int pid) |
c906108c | 3192 | { |
c5aa993b | 3193 | char *exec_file; |
c906108c SS |
3194 | |
3195 | exec_file = debug_target.to_pid_to_exec_file (pid); | |
3196 | ||
96baa820 | 3197 | fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n", |
c5aa993b | 3198 | pid, exec_file); |
c906108c SS |
3199 | |
3200 | return exec_file; | |
3201 | } | |
3202 | ||
c906108c | 3203 | static void |
fba45db2 | 3204 | setup_target_debug (void) |
c906108c SS |
3205 | { |
3206 | memcpy (&debug_target, ¤t_target, sizeof debug_target); | |
3207 | ||
3208 | current_target.to_open = debug_to_open; | |
c906108c | 3209 | current_target.to_post_attach = debug_to_post_attach; |
c906108c | 3210 | current_target.to_prepare_to_store = debug_to_prepare_to_store; |
c8e73a31 | 3211 | current_target.deprecated_xfer_memory = deprecated_debug_xfer_memory; |
c906108c SS |
3212 | current_target.to_files_info = debug_to_files_info; |
3213 | current_target.to_insert_breakpoint = debug_to_insert_breakpoint; | |
3214 | current_target.to_remove_breakpoint = debug_to_remove_breakpoint; | |
ccaa32c7 GS |
3215 | current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint; |
3216 | current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint; | |
3217 | current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint; | |
3218 | current_target.to_insert_watchpoint = debug_to_insert_watchpoint; | |
3219 | current_target.to_remove_watchpoint = debug_to_remove_watchpoint; | |
3220 | current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint; | |
3221 | current_target.to_stopped_data_address = debug_to_stopped_data_address; | |
5009afc5 | 3222 | current_target.to_watchpoint_addr_within_range = debug_to_watchpoint_addr_within_range; |
e0d24f8d | 3223 | current_target.to_region_ok_for_hw_watchpoint = debug_to_region_ok_for_hw_watchpoint; |
c906108c SS |
3224 | current_target.to_terminal_init = debug_to_terminal_init; |
3225 | current_target.to_terminal_inferior = debug_to_terminal_inferior; | |
3226 | current_target.to_terminal_ours_for_output = debug_to_terminal_ours_for_output; | |
3227 | current_target.to_terminal_ours = debug_to_terminal_ours; | |
a790ad35 | 3228 | current_target.to_terminal_save_ours = debug_to_terminal_save_ours; |
c906108c SS |
3229 | current_target.to_terminal_info = debug_to_terminal_info; |
3230 | current_target.to_kill = debug_to_kill; | |
3231 | current_target.to_load = debug_to_load; | |
3232 | current_target.to_lookup_symbol = debug_to_lookup_symbol; | |
c906108c SS |
3233 | current_target.to_post_startup_inferior = debug_to_post_startup_inferior; |
3234 | current_target.to_acknowledge_created_inferior = debug_to_acknowledge_created_inferior; | |
c906108c SS |
3235 | current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint; |
3236 | current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint; | |
3237 | current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint; | |
3238 | current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint; | |
c906108c SS |
3239 | current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint; |
3240 | current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint; | |
c906108c | 3241 | current_target.to_has_exited = debug_to_has_exited; |
c906108c SS |
3242 | current_target.to_can_run = debug_to_can_run; |
3243 | current_target.to_notice_signals = debug_to_notice_signals; | |
c906108c | 3244 | current_target.to_stop = debug_to_stop; |
96baa820 | 3245 | current_target.to_rcmd = debug_to_rcmd; |
c906108c | 3246 | current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file; |
c906108c | 3247 | } |
c906108c | 3248 | \f |
c5aa993b JM |
3249 | |
3250 | static char targ_desc[] = | |
3251 | "Names of targets and files being debugged.\n\ | |
c906108c SS |
3252 | Shows the entire stack of targets currently in use (including the exec-file,\n\ |
3253 | core-file, and process, if any), as well as the symbol file name."; | |
3254 | ||
96baa820 JM |
3255 | static void |
3256 | do_monitor_command (char *cmd, | |
3257 | int from_tty) | |
3258 | { | |
2b5fe715 AC |
3259 | if ((current_target.to_rcmd |
3260 | == (void (*) (char *, struct ui_file *)) tcomplain) | |
96baa820 | 3261 | || (current_target.to_rcmd == debug_to_rcmd |
2b5fe715 AC |
3262 | && (debug_target.to_rcmd |
3263 | == (void (*) (char *, struct ui_file *)) tcomplain))) | |
8a3fe4f8 | 3264 | error (_("\"monitor\" command not supported by this target.")); |
96baa820 JM |
3265 | target_rcmd (cmd, gdb_stdtarg); |
3266 | } | |
3267 | ||
87680a14 JB |
3268 | /* Print the name of each layers of our target stack. */ |
3269 | ||
3270 | static void | |
3271 | maintenance_print_target_stack (char *cmd, int from_tty) | |
3272 | { | |
3273 | struct target_ops *t; | |
3274 | ||
3275 | printf_filtered (_("The current target stack is:\n")); | |
3276 | ||
3277 | for (t = target_stack; t != NULL; t = t->beneath) | |
3278 | { | |
3279 | printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname); | |
3280 | } | |
3281 | } | |
3282 | ||
c6ebd6cf VP |
3283 | /* Controls if async mode is permitted. */ |
3284 | int target_async_permitted = 0; | |
3285 | ||
3286 | /* The set command writes to this variable. If the inferior is | |
3287 | executing, linux_nat_async_permitted is *not* updated. */ | |
3288 | static int target_async_permitted_1 = 0; | |
3289 | ||
3290 | static void | |
3291 | set_maintenance_target_async_permitted (char *args, int from_tty, | |
3292 | struct cmd_list_element *c) | |
3293 | { | |
3294 | if (target_has_execution) | |
3295 | { | |
3296 | target_async_permitted_1 = target_async_permitted; | |
3297 | error (_("Cannot change this setting while the inferior is running.")); | |
3298 | } | |
3299 | ||
3300 | target_async_permitted = target_async_permitted_1; | |
3301 | } | |
3302 | ||
3303 | static void | |
3304 | show_maintenance_target_async_permitted (struct ui_file *file, int from_tty, | |
3305 | struct cmd_list_element *c, | |
3306 | const char *value) | |
3307 | { | |
3308 | fprintf_filtered (file, _("\ | |
3309 | Controlling the inferior in asynchronous mode is %s.\n"), value); | |
3310 | } | |
3311 | ||
c906108c | 3312 | void |
fba45db2 | 3313 | initialize_targets (void) |
c906108c SS |
3314 | { |
3315 | init_dummy_target (); | |
3316 | push_target (&dummy_target); | |
3317 | ||
3318 | add_info ("target", target_info, targ_desc); | |
3319 | add_info ("files", target_info, targ_desc); | |
3320 | ||
85c07804 AC |
3321 | add_setshow_zinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
3322 | Set target debugging."), _("\ | |
3323 | Show target debugging."), _("\ | |
333dabeb DJ |
3324 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
3325 | verbose. Changes do not take effect until the next \"run\" or \"target\"\n\ | |
85c07804 AC |
3326 | command."), |
3327 | NULL, | |
920d2a44 | 3328 | show_targetdebug, |
85c07804 | 3329 | &setdebuglist, &showdebuglist); |
3a11626d | 3330 | |
2bc416ba | 3331 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
3332 | &trust_readonly, _("\ |
3333 | Set mode for reading from readonly sections."), _("\ | |
3334 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
3335 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
3336 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 3337 | result in significant performance improvement for remote targets."), |
2c5b56ce | 3338 | NULL, |
920d2a44 | 3339 | show_trust_readonly, |
e707bbc2 | 3340 | &setlist, &showlist); |
96baa820 JM |
3341 | |
3342 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 3343 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 3344 | |
87680a14 JB |
3345 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
3346 | _("Print the name of each layer of the internal target stack."), | |
3347 | &maintenanceprintlist); | |
3348 | ||
c6ebd6cf VP |
3349 | add_setshow_boolean_cmd ("target-async", no_class, |
3350 | &target_async_permitted_1, _("\ | |
3351 | Set whether gdb controls the inferior in asynchronous mode."), _("\ | |
3352 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
3353 | Tells gdb whether to control the inferior in asynchronous mode."), | |
3354 | set_maintenance_target_async_permitted, | |
3355 | show_maintenance_target_async_permitted, | |
3356 | &setlist, | |
3357 | &showlist); | |
3358 | ||
8add0441 | 3359 | target_dcache = dcache_init (); |
c906108c | 3360 | } |