Commit | Line | Data |
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c906108c | 1 | /* Main code for remote server for GDB. |
32d0add0 | 2 | Copyright (C) 1989-2015 Free Software Foundation, Inc. |
c906108c | 3 | |
c5aa993b | 4 | This file is part of GDB. |
c906108c | 5 | |
c5aa993b JM |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 8 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 9 | (at your option) any later version. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
c906108c | 15 | |
c5aa993b | 16 | You should have received a copy of the GNU General Public License |
a9762ec7 | 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
18 | |
19 | #include "server.h" | |
623b6bdf | 20 | #include "gdbthread.h" |
d1feda86 | 21 | #include "agent.h" |
14a00470 | 22 | #include "notif.h" |
3aee8918 | 23 | #include "tdesc.h" |
9c3d6531 | 24 | #include "rsp-low.h" |
c906108c | 25 | |
87ce2a04 | 26 | #include <ctype.h> |
a9fa9f7d | 27 | #include <unistd.h> |
68070c10 | 28 | #if HAVE_SIGNAL_H |
a9fa9f7d | 29 | #include <signal.h> |
68070c10 | 30 | #endif |
87ce2a04 | 31 | #include "gdb_vecs.h" |
8bdce1ff | 32 | #include "gdb_wait.h" |
9accd112 | 33 | #include "btrace-common.h" |
602e3198 | 34 | #include "filestuff.h" |
c144c7a0 | 35 | #include "tracepoint.h" |
799cdc37 | 36 | #include "dll.h" |
533b0600 | 37 | #include "hostio.h" |
a9fa9f7d | 38 | |
122f36ef PA |
39 | /* The thread set with an `Hc' packet. `Hc' is deprecated in favor of |
40 | `vCont'. Note the multi-process extensions made `vCont' a | |
41 | requirement, so `Hc pPID.TID' is pretty much undefined. So | |
42 | CONT_THREAD can be null_ptid for no `Hc' thread, minus_one_ptid for | |
43 | resuming all threads of the process (again, `Hc' isn't used for | |
40e91bc7 | 44 | multi-process), or a specific thread ptid_t. */ |
95954743 | 45 | ptid_t cont_thread; |
122f36ef PA |
46 | |
47 | /* The thread set with an `Hg' packet. */ | |
95954743 | 48 | ptid_t general_thread; |
5b1c542e | 49 | |
0d62e5e8 DJ |
50 | int server_waiting; |
51 | ||
2d717e4f | 52 | static int extended_protocol; |
2d717e4f DJ |
53 | static int response_needed; |
54 | static int exit_requested; | |
55 | ||
03f2bd59 JK |
56 | /* --once: Exit after the first connection has closed. */ |
57 | int run_once; | |
58 | ||
95954743 | 59 | int multi_process; |
89245bc0 DB |
60 | int report_fork_events; |
61 | int report_vfork_events; | |
bd99dc85 | 62 | int non_stop; |
1ec68e26 PA |
63 | int swbreak_feature; |
64 | int hwbreak_feature; | |
bd99dc85 | 65 | |
03583c20 UW |
66 | /* Whether we should attempt to disable the operating system's address |
67 | space randomization feature before starting an inferior. */ | |
68 | int disable_randomization = 1; | |
69 | ||
ccd213ac | 70 | static char **program_argv, **wrapper_argv; |
2d717e4f | 71 | |
a493e3e2 PA |
72 | int pass_signals[GDB_SIGNAL_LAST]; |
73 | int program_signals[GDB_SIGNAL_LAST]; | |
9b224c5e | 74 | int program_signals_p; |
89be2091 | 75 | |
a9fa9f7d DJ |
76 | /* The PID of the originally created or attached inferior. Used to |
77 | send signals to the process when GDB sends us an asynchronous interrupt | |
78 | (user hitting Control-C in the client), and to wait for the child to exit | |
79 | when no longer debugging it. */ | |
80 | ||
a1928bad | 81 | unsigned long signal_pid; |
a9fa9f7d | 82 | |
290fadea RS |
83 | #ifdef SIGTTOU |
84 | /* A file descriptor for the controlling terminal. */ | |
85 | int terminal_fd; | |
86 | ||
87 | /* TERMINAL_FD's original foreground group. */ | |
88 | pid_t old_foreground_pgrp; | |
89 | ||
90 | /* Hand back terminal ownership to the original foreground group. */ | |
91 | ||
92 | static void | |
93 | restore_old_foreground_pgrp (void) | |
94 | { | |
95 | tcsetpgrp (terminal_fd, old_foreground_pgrp); | |
96 | } | |
97 | #endif | |
98 | ||
ec56be1b PA |
99 | /* Set if you want to disable optional thread related packets support |
100 | in gdbserver, for the sake of testing GDB against stubs that don't | |
101 | support them. */ | |
102 | int disable_packet_vCont; | |
103 | int disable_packet_Tthread; | |
104 | int disable_packet_qC; | |
105 | int disable_packet_qfThreadInfo; | |
106 | ||
5b1c542e PA |
107 | /* Last status reported to GDB. */ |
108 | static struct target_waitstatus last_status; | |
95954743 | 109 | static ptid_t last_ptid; |
5b1c542e | 110 | |
bd99dc85 PA |
111 | static char *own_buf; |
112 | static unsigned char *mem_buf; | |
113 | ||
14a00470 YQ |
114 | /* A sub-class of 'struct notif_event' for stop, holding information |
115 | relative to a single stop reply. We keep a queue of these to | |
116 | push to GDB in non-stop mode. */ | |
117 | ||
bd99dc85 PA |
118 | struct vstop_notif |
119 | { | |
14a00470 | 120 | struct notif_event base; |
bd99dc85 PA |
121 | |
122 | /* Thread or process that got the event. */ | |
95954743 | 123 | ptid_t ptid; |
bd99dc85 PA |
124 | |
125 | /* Event info. */ | |
126 | struct target_waitstatus status; | |
127 | }; | |
128 | ||
f4abbc16 MM |
129 | /* The current btrace configuration. This is gdbserver's mirror of GDB's |
130 | btrace configuration. */ | |
131 | static struct btrace_config current_btrace_conf; | |
132 | ||
14a00470 | 133 | DEFINE_QUEUE_P (notif_event_p); |
bd99dc85 PA |
134 | |
135 | /* Put a stop reply to the stop reply queue. */ | |
136 | ||
137 | static void | |
95954743 | 138 | queue_stop_reply (ptid_t ptid, struct target_waitstatus *status) |
bd99dc85 | 139 | { |
14a00470 | 140 | struct vstop_notif *new_notif = xmalloc (sizeof (*new_notif)); |
bd99dc85 | 141 | |
bd99dc85 PA |
142 | new_notif->ptid = ptid; |
143 | new_notif->status = *status; | |
144 | ||
14a00470 | 145 | notif_event_enque (¬if_stop, (struct notif_event *) new_notif); |
bd99dc85 PA |
146 | } |
147 | ||
14a00470 YQ |
148 | static int |
149 | remove_all_on_match_pid (QUEUE (notif_event_p) *q, | |
150 | QUEUE_ITER (notif_event_p) *iter, | |
151 | struct notif_event *event, | |
152 | void *data) | |
bd99dc85 | 153 | { |
14a00470 | 154 | int *pid = data; |
d20a8ad9 | 155 | |
14a00470 YQ |
156 | if (*pid == -1 |
157 | || ptid_get_pid (((struct vstop_notif *) event)->ptid) == *pid) | |
bd99dc85 | 158 | { |
14a00470 YQ |
159 | if (q->free_func != NULL) |
160 | q->free_func (event); | |
161 | ||
162 | QUEUE_remove_elem (notif_event_p, q, iter); | |
bd99dc85 | 163 | } |
14a00470 YQ |
164 | |
165 | return 1; | |
bd99dc85 PA |
166 | } |
167 | ||
95954743 PA |
168 | /* Get rid of the currently pending stop replies for PID. If PID is |
169 | -1, then apply to all processes. */ | |
bd99dc85 PA |
170 | |
171 | static void | |
95954743 | 172 | discard_queued_stop_replies (int pid) |
bd99dc85 | 173 | { |
14a00470 YQ |
174 | QUEUE_iterate (notif_event_p, notif_stop.queue, |
175 | remove_all_on_match_pid, &pid); | |
bd99dc85 PA |
176 | } |
177 | ||
bd99dc85 | 178 | static void |
14a00470 | 179 | vstop_notif_reply (struct notif_event *event, char *own_buf) |
bd99dc85 | 180 | { |
14a00470 YQ |
181 | struct vstop_notif *vstop = (struct vstop_notif *) event; |
182 | ||
183 | prepare_resume_reply (own_buf, vstop->ptid, &vstop->status); | |
bd99dc85 PA |
184 | } |
185 | ||
14a00470 YQ |
186 | struct notif_server notif_stop = |
187 | { | |
188 | "vStopped", "Stop", NULL, vstop_notif_reply, | |
189 | }; | |
190 | ||
2d717e4f DJ |
191 | static int |
192 | target_running (void) | |
193 | { | |
649ebbca | 194 | return get_first_thread () != NULL; |
2d717e4f DJ |
195 | } |
196 | ||
fc620387 | 197 | static int |
5b1c542e | 198 | start_inferior (char **argv) |
c906108c | 199 | { |
ccd213ac | 200 | char **new_argv = argv; |
2d717e4f | 201 | |
ccd213ac DJ |
202 | if (wrapper_argv != NULL) |
203 | { | |
204 | int i, count = 1; | |
205 | ||
206 | for (i = 0; wrapper_argv[i] != NULL; i++) | |
207 | count++; | |
208 | for (i = 0; argv[i] != NULL; i++) | |
209 | count++; | |
210 | new_argv = alloca (sizeof (char *) * count); | |
211 | count = 0; | |
212 | for (i = 0; wrapper_argv[i] != NULL; i++) | |
213 | new_argv[count++] = wrapper_argv[i]; | |
214 | for (i = 0; argv[i] != NULL; i++) | |
215 | new_argv[count++] = argv[i]; | |
216 | new_argv[count] = NULL; | |
217 | } | |
218 | ||
65730243 DE |
219 | if (debug_threads) |
220 | { | |
221 | int i; | |
222 | for (i = 0; new_argv[i]; ++i) | |
87ce2a04 DE |
223 | debug_printf ("new_argv[%d] = \"%s\"\n", i, new_argv[i]); |
224 | debug_flush (); | |
65730243 DE |
225 | } |
226 | ||
b80864fb | 227 | #ifdef SIGTTOU |
a9fa9f7d DJ |
228 | signal (SIGTTOU, SIG_DFL); |
229 | signal (SIGTTIN, SIG_DFL); | |
b80864fb | 230 | #endif |
a9fa9f7d | 231 | |
ccd213ac | 232 | signal_pid = create_inferior (new_argv[0], new_argv); |
0d62e5e8 | 233 | |
c588c53c MS |
234 | /* FIXME: we don't actually know at this point that the create |
235 | actually succeeded. We won't know that until we wait. */ | |
a1928bad | 236 | fprintf (stderr, "Process %s created; pid = %ld\n", argv[0], |
a9fa9f7d | 237 | signal_pid); |
b80864fb | 238 | fflush (stderr); |
a9fa9f7d | 239 | |
b80864fb | 240 | #ifdef SIGTTOU |
a9fa9f7d DJ |
241 | signal (SIGTTOU, SIG_IGN); |
242 | signal (SIGTTIN, SIG_IGN); | |
290fadea RS |
243 | terminal_fd = fileno (stderr); |
244 | old_foreground_pgrp = tcgetpgrp (terminal_fd); | |
245 | tcsetpgrp (terminal_fd, signal_pid); | |
246 | atexit (restore_old_foreground_pgrp); | |
b80864fb | 247 | #endif |
c906108c | 248 | |
ccd213ac DJ |
249 | if (wrapper_argv != NULL) |
250 | { | |
251 | struct thread_resume resume_info; | |
ccd213ac | 252 | |
ee47b2f8 | 253 | memset (&resume_info, 0, sizeof (resume_info)); |
95954743 | 254 | resume_info.thread = pid_to_ptid (signal_pid); |
bd99dc85 | 255 | resume_info.kind = resume_continue; |
ccd213ac | 256 | resume_info.sig = 0; |
ccd213ac | 257 | |
06db92f0 | 258 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
bd99dc85 | 259 | |
eb97750b | 260 | if (last_status.kind == TARGET_WAITKIND_STOPPED) |
ccd213ac | 261 | { |
eb97750b YQ |
262 | do |
263 | { | |
264 | (*the_target->resume) (&resume_info, 1); | |
265 | ||
266 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); | |
267 | if (last_status.kind != TARGET_WAITKIND_STOPPED) | |
268 | break; | |
269 | ||
270 | current_thread->last_resume_kind = resume_stop; | |
271 | current_thread->last_status = last_status; | |
272 | } | |
273 | while (last_status.value.sig != GDB_SIGNAL_TRAP); | |
ccd213ac | 274 | } |
5b1c542e | 275 | return signal_pid; |
ccd213ac DJ |
276 | } |
277 | ||
5b1c542e PA |
278 | /* Wait till we are at 1st instruction in program, return new pid |
279 | (assuming success). */ | |
95954743 | 280 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
5b1c542e | 281 | |
d20a8ad9 PA |
282 | if (last_status.kind != TARGET_WAITKIND_EXITED |
283 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
284 | { | |
0bfdf32f GB |
285 | current_thread->last_resume_kind = resume_stop; |
286 | current_thread->last_status = last_status; | |
d20a8ad9 | 287 | } |
80ad801e PA |
288 | else |
289 | mourn_inferior (find_process_pid (ptid_get_pid (last_ptid))); | |
d20a8ad9 | 290 | |
5b1c542e | 291 | return signal_pid; |
c906108c SS |
292 | } |
293 | ||
45b7b345 | 294 | static int |
5b1c542e | 295 | attach_inferior (int pid) |
45b7b345 DJ |
296 | { |
297 | /* myattach should return -1 if attaching is unsupported, | |
298 | 0 if it succeeded, and call error() otherwise. */ | |
a9fa9f7d | 299 | |
45b7b345 DJ |
300 | if (myattach (pid) != 0) |
301 | return -1; | |
302 | ||
6910d122 | 303 | fprintf (stderr, "Attached; pid = %d\n", pid); |
b80864fb | 304 | fflush (stderr); |
6910d122 | 305 | |
a9fa9f7d DJ |
306 | /* FIXME - It may be that we should get the SIGNAL_PID from the |
307 | attach function, so that it can be the main thread instead of | |
308 | whichever we were told to attach to. */ | |
309 | signal_pid = pid; | |
310 | ||
bd99dc85 PA |
311 | if (!non_stop) |
312 | { | |
95954743 | 313 | last_ptid = mywait (pid_to_ptid (pid), &last_status, 0, 0); |
bd99dc85 PA |
314 | |
315 | /* GDB knows to ignore the first SIGSTOP after attaching to a running | |
316 | process using the "attach" command, but this is different; it's | |
317 | just using "target remote". Pretend it's just starting up. */ | |
318 | if (last_status.kind == TARGET_WAITKIND_STOPPED | |
a493e3e2 PA |
319 | && last_status.value.sig == GDB_SIGNAL_STOP) |
320 | last_status.value.sig = GDB_SIGNAL_TRAP; | |
d20a8ad9 | 321 | |
0bfdf32f GB |
322 | current_thread->last_resume_kind = resume_stop; |
323 | current_thread->last_status = last_status; | |
bd99dc85 | 324 | } |
9db87ebd | 325 | |
45b7b345 DJ |
326 | return 0; |
327 | } | |
328 | ||
c906108c | 329 | extern int remote_debug; |
ce3a066d | 330 | |
0876f84a DJ |
331 | /* Decode a qXfer read request. Return 0 if everything looks OK, |
332 | or -1 otherwise. */ | |
333 | ||
334 | static int | |
d08aafef | 335 | decode_xfer_read (char *buf, CORE_ADDR *ofs, unsigned int *len) |
0876f84a | 336 | { |
d08aafef PA |
337 | /* After the read marker and annex, qXfer looks like a |
338 | traditional 'm' packet. */ | |
339 | decode_m_packet (buf, ofs, len); | |
340 | ||
341 | return 0; | |
342 | } | |
343 | ||
344 | static int | |
345 | decode_xfer (char *buf, char **object, char **rw, char **annex, char **offset) | |
346 | { | |
347 | /* Extract and NUL-terminate the object. */ | |
348 | *object = buf; | |
349 | while (*buf && *buf != ':') | |
350 | buf++; | |
351 | if (*buf == '\0') | |
352 | return -1; | |
353 | *buf++ = 0; | |
354 | ||
355 | /* Extract and NUL-terminate the read/write action. */ | |
356 | *rw = buf; | |
357 | while (*buf && *buf != ':') | |
358 | buf++; | |
359 | if (*buf == '\0') | |
360 | return -1; | |
361 | *buf++ = 0; | |
362 | ||
0876f84a DJ |
363 | /* Extract and NUL-terminate the annex. */ |
364 | *annex = buf; | |
365 | while (*buf && *buf != ':') | |
366 | buf++; | |
367 | if (*buf == '\0') | |
368 | return -1; | |
369 | *buf++ = 0; | |
370 | ||
d08aafef | 371 | *offset = buf; |
0876f84a DJ |
372 | return 0; |
373 | } | |
374 | ||
375 | /* Write the response to a successful qXfer read. Returns the | |
376 | length of the (binary) data stored in BUF, corresponding | |
377 | to as much of DATA/LEN as we could fit. IS_MORE controls | |
378 | the first character of the response. */ | |
379 | static int | |
23181151 | 380 | write_qxfer_response (char *buf, const void *data, int len, int is_more) |
0876f84a DJ |
381 | { |
382 | int out_len; | |
383 | ||
384 | if (is_more) | |
385 | buf[0] = 'm'; | |
386 | else | |
387 | buf[0] = 'l'; | |
388 | ||
124e13d9 SM |
389 | return remote_escape_output (data, len, 1, (unsigned char *) buf + 1, |
390 | &out_len, PBUFSIZ - 2) + 1; | |
0876f84a DJ |
391 | } |
392 | ||
f4abbc16 | 393 | /* Handle btrace enabling in BTS format. */ |
9accd112 MM |
394 | |
395 | static const char * | |
f4abbc16 | 396 | handle_btrace_enable_bts (struct thread_info *thread) |
9accd112 MM |
397 | { |
398 | if (thread->btrace != NULL) | |
399 | return "E.Btrace already enabled."; | |
400 | ||
f4abbc16 MM |
401 | current_btrace_conf.format = BTRACE_FORMAT_BTS; |
402 | thread->btrace = target_enable_btrace (thread->entry.id, | |
403 | ¤t_btrace_conf); | |
9accd112 MM |
404 | if (thread->btrace == NULL) |
405 | return "E.Could not enable btrace."; | |
406 | ||
407 | return NULL; | |
408 | } | |
409 | ||
b20a6524 MM |
410 | /* Handle btrace enabling in Intel(R) Processor Trace format. */ |
411 | ||
412 | static const char * | |
413 | handle_btrace_enable_pt (struct thread_info *thread) | |
414 | { | |
415 | if (thread->btrace != NULL) | |
416 | return "E.Btrace already enabled."; | |
417 | ||
418 | current_btrace_conf.format = BTRACE_FORMAT_PT; | |
419 | thread->btrace = target_enable_btrace (thread->entry.id, | |
420 | ¤t_btrace_conf); | |
421 | if (thread->btrace == NULL) | |
422 | return "E.Could not enable btrace."; | |
423 | ||
424 | return NULL; | |
425 | } | |
426 | ||
9accd112 MM |
427 | /* Handle btrace disabling. */ |
428 | ||
429 | static const char * | |
430 | handle_btrace_disable (struct thread_info *thread) | |
431 | { | |
432 | ||
433 | if (thread->btrace == NULL) | |
434 | return "E.Branch tracing not enabled."; | |
435 | ||
436 | if (target_disable_btrace (thread->btrace) != 0) | |
437 | return "E.Could not disable branch tracing."; | |
438 | ||
439 | thread->btrace = NULL; | |
440 | return NULL; | |
441 | } | |
442 | ||
443 | /* Handle the "Qbtrace" packet. */ | |
444 | ||
445 | static int | |
446 | handle_btrace_general_set (char *own_buf) | |
447 | { | |
448 | struct thread_info *thread; | |
449 | const char *err; | |
450 | char *op; | |
451 | ||
61012eef | 452 | if (!startswith (own_buf, "Qbtrace:")) |
9accd112 MM |
453 | return 0; |
454 | ||
455 | op = own_buf + strlen ("Qbtrace:"); | |
456 | ||
9accd112 MM |
457 | if (ptid_equal (general_thread, null_ptid) |
458 | || ptid_equal (general_thread, minus_one_ptid)) | |
459 | { | |
460 | strcpy (own_buf, "E.Must select a single thread."); | |
461 | return -1; | |
462 | } | |
463 | ||
464 | thread = find_thread_ptid (general_thread); | |
465 | if (thread == NULL) | |
466 | { | |
467 | strcpy (own_buf, "E.No such thread."); | |
468 | return -1; | |
469 | } | |
470 | ||
471 | err = NULL; | |
472 | ||
473 | if (strcmp (op, "bts") == 0) | |
f4abbc16 | 474 | err = handle_btrace_enable_bts (thread); |
b20a6524 MM |
475 | else if (strcmp (op, "pt") == 0) |
476 | err = handle_btrace_enable_pt (thread); | |
9accd112 MM |
477 | else if (strcmp (op, "off") == 0) |
478 | err = handle_btrace_disable (thread); | |
479 | else | |
b20a6524 | 480 | err = "E.Bad Qbtrace operation. Use bts, pt, or off."; |
9accd112 MM |
481 | |
482 | if (err != 0) | |
483 | strcpy (own_buf, err); | |
484 | else | |
485 | write_ok (own_buf); | |
486 | ||
487 | return 1; | |
488 | } | |
489 | ||
d33501a5 MM |
490 | /* Handle the "Qbtrace-conf" packet. */ |
491 | ||
492 | static int | |
493 | handle_btrace_conf_general_set (char *own_buf) | |
494 | { | |
495 | struct thread_info *thread; | |
496 | char *op; | |
497 | ||
61012eef | 498 | if (!startswith (own_buf, "Qbtrace-conf:")) |
d33501a5 MM |
499 | return 0; |
500 | ||
501 | op = own_buf + strlen ("Qbtrace-conf:"); | |
502 | ||
503 | if (ptid_equal (general_thread, null_ptid) | |
504 | || ptid_equal (general_thread, minus_one_ptid)) | |
505 | { | |
506 | strcpy (own_buf, "E.Must select a single thread."); | |
507 | return -1; | |
508 | } | |
509 | ||
510 | thread = find_thread_ptid (general_thread); | |
511 | if (thread == NULL) | |
512 | { | |
513 | strcpy (own_buf, "E.No such thread."); | |
514 | return -1; | |
515 | } | |
516 | ||
61012eef | 517 | if (startswith (op, "bts:size=")) |
d33501a5 MM |
518 | { |
519 | unsigned long size; | |
520 | char *endp = NULL; | |
521 | ||
522 | errno = 0; | |
523 | size = strtoul (op + strlen ("bts:size="), &endp, 16); | |
524 | if (endp == NULL || *endp != 0 || errno != 0 || size > UINT_MAX) | |
525 | { | |
526 | strcpy (own_buf, "E.Bad size value."); | |
527 | return -1; | |
528 | } | |
529 | ||
530 | current_btrace_conf.bts.size = (unsigned int) size; | |
531 | } | |
b20a6524 MM |
532 | else if (strncmp (op, "pt:size=", strlen ("pt:size=")) == 0) |
533 | { | |
534 | unsigned long size; | |
535 | char *endp = NULL; | |
536 | ||
537 | errno = 0; | |
538 | size = strtoul (op + strlen ("pt:size="), &endp, 16); | |
539 | if (endp == NULL || *endp != 0 || errno != 0 || size > UINT_MAX) | |
540 | { | |
541 | strcpy (own_buf, "E.Bad size value."); | |
542 | return -1; | |
543 | } | |
544 | ||
545 | current_btrace_conf.pt.size = (unsigned int) size; | |
546 | } | |
d33501a5 MM |
547 | else |
548 | { | |
549 | strcpy (own_buf, "E.Bad Qbtrace configuration option."); | |
550 | return -1; | |
551 | } | |
552 | ||
553 | write_ok (own_buf); | |
554 | return 1; | |
555 | } | |
556 | ||
89be2091 | 557 | /* Handle all of the extended 'Q' packets. */ |
ae1ada35 DE |
558 | |
559 | static void | |
89be2091 DJ |
560 | handle_general_set (char *own_buf) |
561 | { | |
61012eef | 562 | if (startswith (own_buf, "QPassSignals:")) |
89be2091 | 563 | { |
a493e3e2 | 564 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
89be2091 DJ |
565 | const char *p = own_buf + strlen ("QPassSignals:"); |
566 | CORE_ADDR cursig; | |
567 | ||
568 | p = decode_address_to_semicolon (&cursig, p); | |
569 | for (i = 0; i < numsigs; i++) | |
570 | { | |
571 | if (i == cursig) | |
572 | { | |
573 | pass_signals[i] = 1; | |
574 | if (*p == '\0') | |
575 | /* Keep looping, to clear the remaining signals. */ | |
576 | cursig = -1; | |
577 | else | |
578 | p = decode_address_to_semicolon (&cursig, p); | |
579 | } | |
580 | else | |
581 | pass_signals[i] = 0; | |
582 | } | |
583 | strcpy (own_buf, "OK"); | |
584 | return; | |
585 | } | |
586 | ||
61012eef | 587 | if (startswith (own_buf, "QProgramSignals:")) |
9b224c5e | 588 | { |
a493e3e2 | 589 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
9b224c5e PA |
590 | const char *p = own_buf + strlen ("QProgramSignals:"); |
591 | CORE_ADDR cursig; | |
592 | ||
593 | program_signals_p = 1; | |
594 | ||
595 | p = decode_address_to_semicolon (&cursig, p); | |
596 | for (i = 0; i < numsigs; i++) | |
597 | { | |
598 | if (i == cursig) | |
599 | { | |
600 | program_signals[i] = 1; | |
601 | if (*p == '\0') | |
602 | /* Keep looping, to clear the remaining signals. */ | |
603 | cursig = -1; | |
604 | else | |
605 | p = decode_address_to_semicolon (&cursig, p); | |
606 | } | |
607 | else | |
608 | program_signals[i] = 0; | |
609 | } | |
610 | strcpy (own_buf, "OK"); | |
611 | return; | |
612 | } | |
613 | ||
a6f3e723 SL |
614 | if (strcmp (own_buf, "QStartNoAckMode") == 0) |
615 | { | |
616 | if (remote_debug) | |
617 | { | |
618 | fprintf (stderr, "[noack mode enabled]\n"); | |
619 | fflush (stderr); | |
620 | } | |
621 | ||
622 | noack_mode = 1; | |
623 | write_ok (own_buf); | |
624 | return; | |
625 | } | |
626 | ||
61012eef | 627 | if (startswith (own_buf, "QNonStop:")) |
bd99dc85 PA |
628 | { |
629 | char *mode = own_buf + 9; | |
630 | int req = -1; | |
b2333d22 | 631 | const char *req_str; |
bd99dc85 PA |
632 | |
633 | if (strcmp (mode, "0") == 0) | |
634 | req = 0; | |
635 | else if (strcmp (mode, "1") == 0) | |
636 | req = 1; | |
637 | else | |
638 | { | |
639 | /* We don't know what this mode is, so complain to | |
640 | GDB. */ | |
641 | fprintf (stderr, "Unknown non-stop mode requested: %s\n", | |
642 | own_buf); | |
643 | write_enn (own_buf); | |
644 | return; | |
645 | } | |
646 | ||
647 | req_str = req ? "non-stop" : "all-stop"; | |
648 | if (start_non_stop (req) != 0) | |
649 | { | |
650 | fprintf (stderr, "Setting %s mode failed\n", req_str); | |
651 | write_enn (own_buf); | |
652 | return; | |
653 | } | |
654 | ||
655 | non_stop = req; | |
656 | ||
657 | if (remote_debug) | |
658 | fprintf (stderr, "[%s mode enabled]\n", req_str); | |
659 | ||
660 | write_ok (own_buf); | |
661 | return; | |
662 | } | |
663 | ||
61012eef | 664 | if (startswith (own_buf, "QDisableRandomization:")) |
03583c20 UW |
665 | { |
666 | char *packet = own_buf + strlen ("QDisableRandomization:"); | |
667 | ULONGEST setting; | |
668 | ||
669 | unpack_varlen_hex (packet, &setting); | |
670 | disable_randomization = setting; | |
671 | ||
672 | if (remote_debug) | |
673 | { | |
674 | if (disable_randomization) | |
675 | fprintf (stderr, "[address space randomization disabled]\n"); | |
676 | else | |
677 | fprintf (stderr, "[address space randomization enabled]\n"); | |
678 | } | |
679 | ||
680 | write_ok (own_buf); | |
681 | return; | |
682 | } | |
683 | ||
219f2f23 PA |
684 | if (target_supports_tracepoints () |
685 | && handle_tracepoint_general_set (own_buf)) | |
686 | return; | |
687 | ||
61012eef | 688 | if (startswith (own_buf, "QAgent:")) |
d1feda86 YQ |
689 | { |
690 | char *mode = own_buf + strlen ("QAgent:"); | |
691 | int req = 0; | |
692 | ||
693 | if (strcmp (mode, "0") == 0) | |
694 | req = 0; | |
695 | else if (strcmp (mode, "1") == 0) | |
696 | req = 1; | |
697 | else | |
698 | { | |
699 | /* We don't know what this value is, so complain to GDB. */ | |
700 | sprintf (own_buf, "E.Unknown QAgent value"); | |
701 | return; | |
702 | } | |
703 | ||
704 | /* Update the flag. */ | |
705 | use_agent = req; | |
706 | if (remote_debug) | |
707 | fprintf (stderr, "[%s agent]\n", req ? "Enable" : "Disable"); | |
708 | write_ok (own_buf); | |
709 | return; | |
710 | } | |
711 | ||
9accd112 MM |
712 | if (handle_btrace_general_set (own_buf)) |
713 | return; | |
714 | ||
d33501a5 MM |
715 | if (handle_btrace_conf_general_set (own_buf)) |
716 | return; | |
717 | ||
89be2091 DJ |
718 | /* Otherwise we didn't know what packet it was. Say we didn't |
719 | understand it. */ | |
720 | own_buf[0] = 0; | |
721 | } | |
722 | ||
23181151 | 723 | static const char * |
fb1e4ffc | 724 | get_features_xml (const char *annex) |
23181151 | 725 | { |
3aee8918 PA |
726 | const struct target_desc *desc = current_target_desc (); |
727 | ||
728 | /* `desc->xmltarget' defines what to return when looking for the | |
729 | "target.xml" file. Its contents can either be verbatim XML code | |
730 | (prefixed with a '@') or else the name of the actual XML file to | |
731 | be used in place of "target.xml". | |
fb1e4ffc | 732 | |
9b4b61c8 UW |
733 | This variable is set up from the auto-generated |
734 | init_registers_... routine for the current target. */ | |
fb1e4ffc | 735 | |
3aee8918 | 736 | if (desc->xmltarget != NULL && strcmp (annex, "target.xml") == 0) |
23181151 | 737 | { |
3aee8918 PA |
738 | if (*desc->xmltarget == '@') |
739 | return desc->xmltarget + 1; | |
23181151 | 740 | else |
3aee8918 | 741 | annex = desc->xmltarget; |
23181151 DJ |
742 | } |
743 | ||
9b4b61c8 UW |
744 | #ifdef USE_XML |
745 | { | |
746 | extern const char *const xml_builtin[][2]; | |
747 | int i; | |
748 | ||
749 | /* Look for the annex. */ | |
750 | for (i = 0; xml_builtin[i][0] != NULL; i++) | |
751 | if (strcmp (annex, xml_builtin[i][0]) == 0) | |
752 | break; | |
753 | ||
754 | if (xml_builtin[i][0] != NULL) | |
755 | return xml_builtin[i][1]; | |
756 | } | |
757 | #endif | |
758 | ||
759 | return NULL; | |
23181151 DJ |
760 | } |
761 | ||
c74d0ad8 DJ |
762 | void |
763 | monitor_show_help (void) | |
764 | { | |
765 | monitor_output ("The following monitor commands are supported:\n"); | |
766 | monitor_output (" set debug <0|1>\n"); | |
1b3f6016 | 767 | monitor_output (" Enable general debugging messages\n"); |
aa5ca48f DE |
768 | monitor_output (" set debug-hw-points <0|1>\n"); |
769 | monitor_output (" Enable h/w breakpoint/watchpoint debugging messages\n"); | |
c74d0ad8 DJ |
770 | monitor_output (" set remote-debug <0|1>\n"); |
771 | monitor_output (" Enable remote protocol debugging messages\n"); | |
87ce2a04 DE |
772 | monitor_output (" set debug-format option1[,option2,...]\n"); |
773 | monitor_output (" Add additional information to debugging messages\n"); | |
774 | monitor_output (" Options: all, none"); | |
87ce2a04 | 775 | monitor_output (", timestamp"); |
87ce2a04 | 776 | monitor_output ("\n"); |
ecd7ecbc DJ |
777 | monitor_output (" exit\n"); |
778 | monitor_output (" Quit GDBserver\n"); | |
c74d0ad8 DJ |
779 | } |
780 | ||
764880b7 PA |
781 | /* Read trace frame or inferior memory. Returns the number of bytes |
782 | actually read, zero when no further transfer is possible, and -1 on | |
783 | error. Return of a positive value smaller than LEN does not | |
784 | indicate there's no more to be read, only the end of the transfer. | |
785 | E.g., when GDB reads memory from a traceframe, a first request may | |
786 | be served from a memory block that does not cover the whole request | |
787 | length. A following request gets the rest served from either | |
788 | another block (of the same traceframe) or from the read-only | |
789 | regions. */ | |
219f2f23 PA |
790 | |
791 | static int | |
90d74c30 | 792 | gdb_read_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) |
219f2f23 | 793 | { |
764880b7 | 794 | int res; |
90d74c30 | 795 | |
219f2f23 PA |
796 | if (current_traceframe >= 0) |
797 | { | |
798 | ULONGEST nbytes; | |
799 | ULONGEST length = len; | |
800 | ||
801 | if (traceframe_read_mem (current_traceframe, | |
802 | memaddr, myaddr, len, &nbytes)) | |
9a13b2fa | 803 | return -1; |
219f2f23 | 804 | /* Data read from trace buffer, we're done. */ |
764880b7 PA |
805 | if (nbytes > 0) |
806 | return nbytes; | |
219f2f23 | 807 | if (!in_readonly_region (memaddr, length)) |
764880b7 | 808 | return -1; |
219f2f23 PA |
809 | /* Otherwise we have a valid readonly case, fall through. */ |
810 | /* (assume no half-trace half-real blocks for now) */ | |
811 | } | |
812 | ||
764880b7 PA |
813 | res = prepare_to_access_memory (); |
814 | if (res == 0) | |
90d74c30 | 815 | { |
764880b7 | 816 | res = read_inferior_memory (memaddr, myaddr, len); |
0146f85b | 817 | done_accessing_memory (); |
90d74c30 | 818 | |
764880b7 PA |
819 | return res == 0 ? len : -1; |
820 | } | |
821 | else | |
822 | return -1; | |
219f2f23 PA |
823 | } |
824 | ||
825 | /* Write trace frame or inferior memory. Actually, writing to trace | |
826 | frames is forbidden. */ | |
827 | ||
828 | static int | |
90d74c30 | 829 | gdb_write_memory (CORE_ADDR memaddr, const unsigned char *myaddr, int len) |
219f2f23 PA |
830 | { |
831 | if (current_traceframe >= 0) | |
832 | return EIO; | |
833 | else | |
90d74c30 PA |
834 | { |
835 | int ret; | |
836 | ||
837 | ret = prepare_to_access_memory (); | |
838 | if (ret == 0) | |
839 | { | |
840 | ret = write_inferior_memory (memaddr, myaddr, len); | |
0146f85b | 841 | done_accessing_memory (); |
90d74c30 PA |
842 | } |
843 | return ret; | |
844 | } | |
219f2f23 PA |
845 | } |
846 | ||
08388c79 DE |
847 | /* Subroutine of handle_search_memory to simplify it. */ |
848 | ||
849 | static int | |
850 | handle_search_memory_1 (CORE_ADDR start_addr, CORE_ADDR search_space_len, | |
851 | gdb_byte *pattern, unsigned pattern_len, | |
852 | gdb_byte *search_buf, | |
853 | unsigned chunk_size, unsigned search_buf_size, | |
854 | CORE_ADDR *found_addrp) | |
855 | { | |
856 | /* Prime the search buffer. */ | |
857 | ||
764880b7 PA |
858 | if (gdb_read_memory (start_addr, search_buf, search_buf_size) |
859 | != search_buf_size) | |
08388c79 | 860 | { |
b3dc46ff AB |
861 | warning ("Unable to access %ld bytes of target " |
862 | "memory at 0x%lx, halting search.", | |
863 | (long) search_buf_size, (long) start_addr); | |
08388c79 DE |
864 | return -1; |
865 | } | |
866 | ||
867 | /* Perform the search. | |
868 | ||
869 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
870 | When we've scanned N bytes we copy the trailing bytes to the start and | |
871 | read in another N bytes. */ | |
872 | ||
873 | while (search_space_len >= pattern_len) | |
874 | { | |
875 | gdb_byte *found_ptr; | |
876 | unsigned nr_search_bytes = (search_space_len < search_buf_size | |
877 | ? search_space_len | |
878 | : search_buf_size); | |
879 | ||
880 | found_ptr = memmem (search_buf, nr_search_bytes, pattern, pattern_len); | |
881 | ||
882 | if (found_ptr != NULL) | |
883 | { | |
884 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
885 | *found_addrp = found_addr; | |
886 | return 1; | |
887 | } | |
888 | ||
889 | /* Not found in this chunk, skip to next chunk. */ | |
890 | ||
891 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
892 | if (search_space_len >= chunk_size) | |
893 | search_space_len -= chunk_size; | |
894 | else | |
895 | search_space_len = 0; | |
896 | ||
897 | if (search_space_len >= pattern_len) | |
898 | { | |
899 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 900 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
901 | int nr_to_read; |
902 | ||
903 | /* Copy the trailing part of the previous iteration to the front | |
904 | of the buffer for the next iteration. */ | |
905 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
906 | ||
907 | nr_to_read = (search_space_len - keep_len < chunk_size | |
908 | ? search_space_len - keep_len | |
909 | : chunk_size); | |
910 | ||
90d74c30 | 911 | if (gdb_read_memory (read_addr, search_buf + keep_len, |
764880b7 | 912 | nr_to_read) != search_buf_size) |
08388c79 | 913 | { |
b3dc46ff | 914 | warning ("Unable to access %ld bytes of target memory " |
493e2a69 | 915 | "at 0x%lx, halting search.", |
b3dc46ff | 916 | (long) nr_to_read, (long) read_addr); |
08388c79 DE |
917 | return -1; |
918 | } | |
919 | ||
920 | start_addr += chunk_size; | |
921 | } | |
922 | } | |
923 | ||
924 | /* Not found. */ | |
925 | ||
926 | return 0; | |
927 | } | |
928 | ||
929 | /* Handle qSearch:memory packets. */ | |
930 | ||
931 | static void | |
932 | handle_search_memory (char *own_buf, int packet_len) | |
933 | { | |
934 | CORE_ADDR start_addr; | |
935 | CORE_ADDR search_space_len; | |
936 | gdb_byte *pattern; | |
937 | unsigned int pattern_len; | |
938 | /* NOTE: also defined in find.c testcase. */ | |
939 | #define SEARCH_CHUNK_SIZE 16000 | |
940 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
941 | /* Buffer to hold memory contents for searching. */ | |
942 | gdb_byte *search_buf; | |
943 | unsigned search_buf_size; | |
944 | int found; | |
945 | CORE_ADDR found_addr; | |
946 | int cmd_name_len = sizeof ("qSearch:memory:") - 1; | |
947 | ||
aef93bd7 | 948 | pattern = malloc (packet_len); |
08388c79 DE |
949 | if (pattern == NULL) |
950 | { | |
5e1471f5 | 951 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
952 | strcpy (own_buf, "E00"); |
953 | return; | |
954 | } | |
955 | if (decode_search_memory_packet (own_buf + cmd_name_len, | |
956 | packet_len - cmd_name_len, | |
957 | &start_addr, &search_space_len, | |
958 | pattern, &pattern_len) < 0) | |
959 | { | |
960 | free (pattern); | |
5e1471f5 | 961 | error ("Error in parsing qSearch:memory packet"); |
08388c79 DE |
962 | strcpy (own_buf, "E00"); |
963 | return; | |
964 | } | |
965 | ||
966 | search_buf_size = chunk_size + pattern_len - 1; | |
967 | ||
968 | /* No point in trying to allocate a buffer larger than the search space. */ | |
969 | if (search_space_len < search_buf_size) | |
970 | search_buf_size = search_space_len; | |
971 | ||
aef93bd7 | 972 | search_buf = malloc (search_buf_size); |
08388c79 DE |
973 | if (search_buf == NULL) |
974 | { | |
975 | free (pattern); | |
5e1471f5 | 976 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
977 | strcpy (own_buf, "E00"); |
978 | return; | |
979 | } | |
980 | ||
981 | found = handle_search_memory_1 (start_addr, search_space_len, | |
982 | pattern, pattern_len, | |
983 | search_buf, chunk_size, search_buf_size, | |
984 | &found_addr); | |
985 | ||
986 | if (found > 0) | |
987 | sprintf (own_buf, "1,%lx", (long) found_addr); | |
988 | else if (found == 0) | |
989 | strcpy (own_buf, "0"); | |
990 | else | |
991 | strcpy (own_buf, "E00"); | |
992 | ||
993 | free (search_buf); | |
994 | free (pattern); | |
995 | } | |
996 | ||
2d717e4f DJ |
997 | #define require_running(BUF) \ |
998 | if (!target_running ()) \ | |
999 | { \ | |
1000 | write_enn (BUF); \ | |
1001 | return; \ | |
1002 | } | |
1003 | ||
87ce2a04 DE |
1004 | /* Parse options to --debug-format= and "monitor set debug-format". |
1005 | ARG is the text after "--debug-format=" or "monitor set debug-format". | |
1006 | IS_MONITOR is non-zero if we're invoked via "monitor set debug-format". | |
1007 | This triggers calls to monitor_output. | |
1008 | The result is NULL if all options were parsed ok, otherwise an error | |
1009 | message which the caller must free. | |
1010 | ||
1011 | N.B. These commands affect all debug format settings, they are not | |
1012 | cumulative. If a format is not specified, it is turned off. | |
1013 | However, we don't go to extra trouble with things like | |
1014 | "monitor set debug-format all,none,timestamp". | |
1015 | Instead we just parse them one at a time, in order. | |
1016 | ||
1017 | The syntax for "monitor set debug" we support here is not identical | |
1018 | to gdb's "set debug foo on|off" because we also use this function to | |
1019 | parse "--debug-format=foo,bar". */ | |
1020 | ||
1021 | static char * | |
1022 | parse_debug_format_options (const char *arg, int is_monitor) | |
1023 | { | |
1024 | VEC (char_ptr) *options; | |
1025 | int ix; | |
1026 | char *option; | |
1027 | ||
1028 | /* First turn all debug format options off. */ | |
1029 | debug_timestamp = 0; | |
1030 | ||
1031 | /* First remove leading spaces, for "monitor set debug-format". */ | |
1032 | while (isspace (*arg)) | |
1033 | ++arg; | |
1034 | ||
1035 | options = delim_string_to_char_ptr_vec (arg, ','); | |
1036 | ||
1037 | for (ix = 0; VEC_iterate (char_ptr, options, ix, option); ++ix) | |
1038 | { | |
1039 | if (strcmp (option, "all") == 0) | |
1040 | { | |
1041 | debug_timestamp = 1; | |
1042 | if (is_monitor) | |
1043 | monitor_output ("All extra debug format options enabled.\n"); | |
1044 | } | |
1045 | else if (strcmp (option, "none") == 0) | |
1046 | { | |
1047 | debug_timestamp = 0; | |
1048 | if (is_monitor) | |
1049 | monitor_output ("All extra debug format options disabled.\n"); | |
1050 | } | |
87ce2a04 DE |
1051 | else if (strcmp (option, "timestamp") == 0) |
1052 | { | |
1053 | debug_timestamp = 1; | |
1054 | if (is_monitor) | |
1055 | monitor_output ("Timestamps will be added to debug output.\n"); | |
1056 | } | |
87ce2a04 DE |
1057 | else if (*option == '\0') |
1058 | { | |
1059 | /* An empty option, e.g., "--debug-format=foo,,bar", is ignored. */ | |
1060 | continue; | |
1061 | } | |
1062 | else | |
1063 | { | |
1064 | char *msg = xstrprintf ("Unknown debug-format argument: \"%s\"\n", | |
1065 | option); | |
1066 | ||
1067 | free_char_ptr_vec (options); | |
1068 | return msg; | |
1069 | } | |
1070 | } | |
1071 | ||
1072 | free_char_ptr_vec (options); | |
1073 | return NULL; | |
1074 | } | |
1075 | ||
cdbfd419 PP |
1076 | /* Handle monitor commands not handled by target-specific handlers. */ |
1077 | ||
1078 | static void | |
d73f2619 | 1079 | handle_monitor_command (char *mon, char *own_buf) |
cdbfd419 PP |
1080 | { |
1081 | if (strcmp (mon, "set debug 1") == 0) | |
1082 | { | |
1083 | debug_threads = 1; | |
1084 | monitor_output ("Debug output enabled.\n"); | |
1085 | } | |
1086 | else if (strcmp (mon, "set debug 0") == 0) | |
1087 | { | |
1088 | debug_threads = 0; | |
1089 | monitor_output ("Debug output disabled.\n"); | |
1090 | } | |
1091 | else if (strcmp (mon, "set debug-hw-points 1") == 0) | |
1092 | { | |
c5e92cca | 1093 | show_debug_regs = 1; |
cdbfd419 PP |
1094 | monitor_output ("H/W point debugging output enabled.\n"); |
1095 | } | |
1096 | else if (strcmp (mon, "set debug-hw-points 0") == 0) | |
1097 | { | |
c5e92cca | 1098 | show_debug_regs = 0; |
cdbfd419 PP |
1099 | monitor_output ("H/W point debugging output disabled.\n"); |
1100 | } | |
1101 | else if (strcmp (mon, "set remote-debug 1") == 0) | |
1102 | { | |
1103 | remote_debug = 1; | |
1104 | monitor_output ("Protocol debug output enabled.\n"); | |
1105 | } | |
1106 | else if (strcmp (mon, "set remote-debug 0") == 0) | |
1107 | { | |
1108 | remote_debug = 0; | |
1109 | monitor_output ("Protocol debug output disabled.\n"); | |
1110 | } | |
61012eef | 1111 | else if (startswith (mon, "set debug-format ")) |
87ce2a04 DE |
1112 | { |
1113 | char *error_msg | |
1114 | = parse_debug_format_options (mon + sizeof ("set debug-format ") - 1, | |
1115 | 1); | |
1116 | ||
1117 | if (error_msg != NULL) | |
1118 | { | |
1119 | monitor_output (error_msg); | |
1120 | monitor_show_help (); | |
1121 | write_enn (own_buf); | |
1122 | xfree (error_msg); | |
1123 | } | |
1124 | } | |
cdbfd419 PP |
1125 | else if (strcmp (mon, "help") == 0) |
1126 | monitor_show_help (); | |
1127 | else if (strcmp (mon, "exit") == 0) | |
1128 | exit_requested = 1; | |
1129 | else | |
1130 | { | |
1131 | monitor_output ("Unknown monitor command.\n\n"); | |
1132 | monitor_show_help (); | |
1133 | write_enn (own_buf); | |
1134 | } | |
1135 | } | |
1136 | ||
d08aafef PA |
1137 | /* Associates a callback with each supported qXfer'able object. */ |
1138 | ||
1139 | struct qxfer | |
1140 | { | |
1141 | /* The object this handler handles. */ | |
1142 | const char *object; | |
1143 | ||
1144 | /* Request that the target transfer up to LEN 8-bit bytes of the | |
1145 | target's OBJECT. The OFFSET, for a seekable object, specifies | |
1146 | the starting point. The ANNEX can be used to provide additional | |
1147 | data-specific information to the target. | |
1148 | ||
1149 | Return the number of bytes actually transfered, zero when no | |
5cc22e4c MM |
1150 | further transfer is possible, -1 on error, -2 when the transfer |
1151 | is not supported, and -3 on a verbose error message that should | |
1152 | be preserved. Return of a positive value smaller than LEN does | |
1153 | not indicate the end of the object, only the end of the transfer. | |
d08aafef PA |
1154 | |
1155 | One, and only one, of readbuf or writebuf must be non-NULL. */ | |
1156 | int (*xfer) (const char *annex, | |
1157 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1158 | ULONGEST offset, LONGEST len); | |
1159 | }; | |
1160 | ||
1161 | /* Handle qXfer:auxv:read. */ | |
1162 | ||
1163 | static int | |
1164 | handle_qxfer_auxv (const char *annex, | |
1165 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1166 | ULONGEST offset, LONGEST len) | |
1167 | { | |
1168 | if (the_target->read_auxv == NULL || writebuf != NULL) | |
1169 | return -2; | |
1170 | ||
1171 | if (annex[0] != '\0' || !target_running ()) | |
1172 | return -1; | |
1173 | ||
1174 | return (*the_target->read_auxv) (offset, readbuf, len); | |
1175 | } | |
1176 | ||
e57f1de3 GB |
1177 | /* Handle qXfer:exec-file:read. */ |
1178 | ||
1179 | static int | |
1180 | handle_qxfer_exec_file (const char *const_annex, | |
1181 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1182 | ULONGEST offset, LONGEST len) | |
1183 | { | |
835205d0 | 1184 | char *file; |
e57f1de3 GB |
1185 | ULONGEST pid; |
1186 | int total_len; | |
1187 | ||
1188 | if (the_target->pid_to_exec_file == NULL || writebuf != NULL) | |
1189 | return -2; | |
1190 | ||
835205d0 GB |
1191 | if (const_annex[0] == '\0') |
1192 | { | |
1193 | if (current_thread == NULL) | |
1194 | return -1; | |
1195 | ||
1196 | pid = pid_of (current_thread); | |
1197 | } | |
1198 | else | |
1199 | { | |
1200 | char *annex = alloca (strlen (const_annex) + 1); | |
1201 | ||
1202 | strcpy (annex, const_annex); | |
1203 | annex = unpack_varlen_hex (annex, &pid); | |
1204 | ||
1205 | if (annex[0] != '\0') | |
1206 | return -1; | |
1207 | } | |
1208 | ||
1209 | if (pid <= 0) | |
e57f1de3 GB |
1210 | return -1; |
1211 | ||
1212 | file = (*the_target->pid_to_exec_file) (pid); | |
1213 | if (file == NULL) | |
1214 | return -1; | |
1215 | ||
1216 | total_len = strlen (file); | |
1217 | ||
1218 | if (offset > total_len) | |
1219 | return -1; | |
1220 | ||
1221 | if (offset + len > total_len) | |
1222 | len = total_len - offset; | |
1223 | ||
1224 | memcpy (readbuf, file + offset, len); | |
1225 | return len; | |
1226 | } | |
1227 | ||
d08aafef PA |
1228 | /* Handle qXfer:features:read. */ |
1229 | ||
1230 | static int | |
1231 | handle_qxfer_features (const char *annex, | |
1232 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1233 | ULONGEST offset, LONGEST len) | |
1234 | { | |
1235 | const char *document; | |
1236 | size_t total_len; | |
1237 | ||
1238 | if (writebuf != NULL) | |
1239 | return -2; | |
1240 | ||
1241 | if (!target_running ()) | |
1242 | return -1; | |
1243 | ||
1244 | /* Grab the correct annex. */ | |
1245 | document = get_features_xml (annex); | |
1246 | if (document == NULL) | |
1247 | return -1; | |
1248 | ||
1249 | total_len = strlen (document); | |
1250 | ||
1251 | if (offset > total_len) | |
1252 | return -1; | |
1253 | ||
1254 | if (offset + len > total_len) | |
1255 | len = total_len - offset; | |
1256 | ||
1257 | memcpy (readbuf, document + offset, len); | |
1258 | return len; | |
1259 | } | |
1260 | ||
649ebbca DE |
1261 | /* Worker routine for handle_qxfer_libraries. |
1262 | Add to the length pointed to by ARG a conservative estimate of the | |
1263 | length needed to transmit the file name of INF. */ | |
1264 | ||
1265 | static void | |
1266 | accumulate_file_name_length (struct inferior_list_entry *inf, void *arg) | |
1267 | { | |
1268 | struct dll_info *dll = (struct dll_info *) inf; | |
1269 | unsigned int *total_len = arg; | |
1270 | ||
1271 | /* Over-estimate the necessary memory. Assume that every character | |
1272 | in the library name must be escaped. */ | |
1273 | *total_len += 128 + 6 * strlen (dll->name); | |
1274 | } | |
1275 | ||
1276 | /* Worker routine for handle_qxfer_libraries. | |
1277 | Emit the XML to describe the library in INF. */ | |
1278 | ||
1279 | static void | |
1280 | emit_dll_description (struct inferior_list_entry *inf, void *arg) | |
1281 | { | |
1282 | struct dll_info *dll = (struct dll_info *) inf; | |
1283 | char **p_ptr = arg; | |
1284 | char *p = *p_ptr; | |
1285 | char *name; | |
1286 | ||
1287 | strcpy (p, " <library name=\""); | |
1288 | p = p + strlen (p); | |
1289 | name = xml_escape_text (dll->name); | |
1290 | strcpy (p, name); | |
1291 | free (name); | |
1292 | p = p + strlen (p); | |
1293 | strcpy (p, "\"><segment address=\""); | |
1294 | p = p + strlen (p); | |
1295 | sprintf (p, "0x%lx", (long) dll->base_addr); | |
1296 | p = p + strlen (p); | |
1297 | strcpy (p, "\"/></library>\n"); | |
1298 | p = p + strlen (p); | |
1299 | ||
1300 | *p_ptr = p; | |
1301 | } | |
1302 | ||
d08aafef PA |
1303 | /* Handle qXfer:libraries:read. */ |
1304 | ||
1305 | static int | |
1306 | handle_qxfer_libraries (const char *annex, | |
1307 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1308 | ULONGEST offset, LONGEST len) | |
1309 | { | |
1310 | unsigned int total_len; | |
1311 | char *document, *p; | |
d08aafef PA |
1312 | |
1313 | if (writebuf != NULL) | |
1314 | return -2; | |
1315 | ||
1316 | if (annex[0] != '\0' || !target_running ()) | |
1317 | return -1; | |
1318 | ||
d08aafef | 1319 | total_len = 64; |
649ebbca DE |
1320 | for_each_inferior_with_data (&all_dlls, accumulate_file_name_length, |
1321 | &total_len); | |
d08aafef PA |
1322 | |
1323 | document = malloc (total_len); | |
1324 | if (document == NULL) | |
1325 | return -1; | |
1326 | ||
24c05f46 | 1327 | strcpy (document, "<library-list version=\"1.0\">\n"); |
d08aafef PA |
1328 | p = document + strlen (document); |
1329 | ||
649ebbca | 1330 | for_each_inferior_with_data (&all_dlls, emit_dll_description, &p); |
d08aafef PA |
1331 | |
1332 | strcpy (p, "</library-list>\n"); | |
1333 | ||
1334 | total_len = strlen (document); | |
1335 | ||
1336 | if (offset > total_len) | |
1337 | { | |
1338 | free (document); | |
1339 | return -1; | |
1340 | } | |
1341 | ||
1342 | if (offset + len > total_len) | |
1343 | len = total_len - offset; | |
1344 | ||
1345 | memcpy (readbuf, document + offset, len); | |
1346 | free (document); | |
1347 | return len; | |
1348 | } | |
1349 | ||
2268b414 JK |
1350 | /* Handle qXfer:libraries-svr4:read. */ |
1351 | ||
1352 | static int | |
1353 | handle_qxfer_libraries_svr4 (const char *annex, | |
1354 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1355 | ULONGEST offset, LONGEST len) | |
1356 | { | |
1357 | if (writebuf != NULL) | |
1358 | return -2; | |
1359 | ||
b1fbec62 | 1360 | if (!target_running () || the_target->qxfer_libraries_svr4 == NULL) |
2268b414 JK |
1361 | return -1; |
1362 | ||
1363 | return the_target->qxfer_libraries_svr4 (annex, readbuf, writebuf, offset, len); | |
1364 | } | |
1365 | ||
d08aafef PA |
1366 | /* Handle qXfer:osadata:read. */ |
1367 | ||
1368 | static int | |
1369 | handle_qxfer_osdata (const char *annex, | |
1370 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1371 | ULONGEST offset, LONGEST len) | |
1372 | { | |
1373 | if (the_target->qxfer_osdata == NULL || writebuf != NULL) | |
1374 | return -2; | |
1375 | ||
1376 | return (*the_target->qxfer_osdata) (annex, readbuf, NULL, offset, len); | |
1377 | } | |
1378 | ||
1379 | /* Handle qXfer:siginfo:read and qXfer:siginfo:write. */ | |
1380 | ||
1381 | static int | |
1382 | handle_qxfer_siginfo (const char *annex, | |
1383 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1384 | ULONGEST offset, LONGEST len) | |
1385 | { | |
1386 | if (the_target->qxfer_siginfo == NULL) | |
1387 | return -2; | |
1388 | ||
1389 | if (annex[0] != '\0' || !target_running ()) | |
1390 | return -1; | |
1391 | ||
1392 | return (*the_target->qxfer_siginfo) (annex, readbuf, writebuf, offset, len); | |
1393 | } | |
1394 | ||
1395 | /* Handle qXfer:spu:read and qXfer:spu:write. */ | |
1396 | ||
1397 | static int | |
1398 | handle_qxfer_spu (const char *annex, | |
1399 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1400 | ULONGEST offset, LONGEST len) | |
1401 | { | |
1402 | if (the_target->qxfer_spu == NULL) | |
1403 | return -2; | |
1404 | ||
1405 | if (!target_running ()) | |
1406 | return -1; | |
1407 | ||
1408 | return (*the_target->qxfer_spu) (annex, readbuf, writebuf, offset, len); | |
1409 | } | |
1410 | ||
1411 | /* Handle qXfer:statictrace:read. */ | |
1412 | ||
1413 | static int | |
1414 | handle_qxfer_statictrace (const char *annex, | |
1415 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1416 | ULONGEST offset, LONGEST len) | |
1417 | { | |
1418 | ULONGEST nbytes; | |
1419 | ||
1420 | if (writebuf != NULL) | |
1421 | return -2; | |
1422 | ||
1423 | if (annex[0] != '\0' || !target_running () || current_traceframe == -1) | |
1424 | return -1; | |
1425 | ||
1426 | if (traceframe_read_sdata (current_traceframe, offset, | |
1427 | readbuf, len, &nbytes)) | |
1428 | return -1; | |
1429 | return nbytes; | |
1430 | } | |
1431 | ||
649ebbca DE |
1432 | /* Helper for handle_qxfer_threads_proper. |
1433 | Emit the XML to describe the thread of INF. */ | |
d08aafef | 1434 | |
dc146f7c | 1435 | static void |
649ebbca | 1436 | handle_qxfer_threads_worker (struct inferior_list_entry *inf, void *arg) |
dc146f7c | 1437 | { |
649ebbca DE |
1438 | struct thread_info *thread = (struct thread_info *) inf; |
1439 | struct buffer *buffer = arg; | |
1440 | ptid_t ptid = thread_to_gdb_id (thread); | |
1441 | char ptid_s[100]; | |
1442 | int core = target_core_of_thread (ptid); | |
1443 | char core_s[21]; | |
dc146f7c | 1444 | |
649ebbca | 1445 | write_ptid (ptid_s, ptid); |
dc146f7c | 1446 | |
649ebbca | 1447 | if (core != -1) |
dc146f7c | 1448 | { |
649ebbca DE |
1449 | sprintf (core_s, "%d", core); |
1450 | buffer_xml_printf (buffer, "<thread id=\"%s\" core=\"%s\"/>\n", | |
1451 | ptid_s, core_s); | |
1452 | } | |
1453 | else | |
1454 | { | |
1455 | buffer_xml_printf (buffer, "<thread id=\"%s\"/>\n", | |
1456 | ptid_s); | |
1457 | } | |
1458 | } | |
dc146f7c | 1459 | |
649ebbca | 1460 | /* Helper for handle_qxfer_threads. */ |
dc146f7c | 1461 | |
649ebbca DE |
1462 | static void |
1463 | handle_qxfer_threads_proper (struct buffer *buffer) | |
1464 | { | |
1465 | buffer_grow_str (buffer, "<threads>\n"); | |
1466 | ||
1467 | for_each_inferior_with_data (&all_threads, handle_qxfer_threads_worker, | |
1468 | buffer); | |
dc146f7c VP |
1469 | |
1470 | buffer_grow_str0 (buffer, "</threads>\n"); | |
1471 | } | |
1472 | ||
d08aafef PA |
1473 | /* Handle qXfer:threads:read. */ |
1474 | ||
dc146f7c | 1475 | static int |
d08aafef PA |
1476 | handle_qxfer_threads (const char *annex, |
1477 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1478 | ULONGEST offset, LONGEST len) | |
dc146f7c VP |
1479 | { |
1480 | static char *result = 0; | |
1481 | static unsigned int result_length = 0; | |
1482 | ||
d08aafef PA |
1483 | if (writebuf != NULL) |
1484 | return -2; | |
1485 | ||
1486 | if (!target_running () || annex[0] != '\0') | |
1487 | return -1; | |
dc146f7c VP |
1488 | |
1489 | if (offset == 0) | |
1490 | { | |
1491 | struct buffer buffer; | |
1492 | /* When asked for data at offset 0, generate everything and store into | |
1493 | 'result'. Successive reads will be served off 'result'. */ | |
1494 | if (result) | |
1495 | free (result); | |
1496 | ||
1497 | buffer_init (&buffer); | |
1498 | ||
d08aafef | 1499 | handle_qxfer_threads_proper (&buffer); |
dc146f7c VP |
1500 | |
1501 | result = buffer_finish (&buffer); | |
1502 | result_length = strlen (result); | |
1503 | buffer_free (&buffer); | |
1504 | } | |
1505 | ||
1506 | if (offset >= result_length) | |
1507 | { | |
1508 | /* We're out of data. */ | |
1509 | free (result); | |
1510 | result = NULL; | |
1511 | result_length = 0; | |
1512 | return 0; | |
1513 | } | |
1514 | ||
d08aafef PA |
1515 | if (len > result_length - offset) |
1516 | len = result_length - offset; | |
1517 | ||
1518 | memcpy (readbuf, result + offset, len); | |
1519 | ||
1520 | return len; | |
1521 | } | |
1522 | ||
b3b9301e PA |
1523 | /* Handle qXfer:traceframe-info:read. */ |
1524 | ||
1525 | static int | |
1526 | handle_qxfer_traceframe_info (const char *annex, | |
1527 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1528 | ULONGEST offset, LONGEST len) | |
1529 | { | |
1530 | static char *result = 0; | |
1531 | static unsigned int result_length = 0; | |
1532 | ||
1533 | if (writebuf != NULL) | |
1534 | return -2; | |
1535 | ||
1536 | if (!target_running () || annex[0] != '\0' || current_traceframe == -1) | |
1537 | return -1; | |
1538 | ||
1539 | if (offset == 0) | |
1540 | { | |
1541 | struct buffer buffer; | |
1542 | ||
1543 | /* When asked for data at offset 0, generate everything and | |
1544 | store into 'result'. Successive reads will be served off | |
1545 | 'result'. */ | |
1546 | free (result); | |
1547 | ||
1548 | buffer_init (&buffer); | |
1549 | ||
1550 | traceframe_read_info (current_traceframe, &buffer); | |
1551 | ||
1552 | result = buffer_finish (&buffer); | |
1553 | result_length = strlen (result); | |
1554 | buffer_free (&buffer); | |
1555 | } | |
1556 | ||
1557 | if (offset >= result_length) | |
1558 | { | |
1559 | /* We're out of data. */ | |
1560 | free (result); | |
1561 | result = NULL; | |
1562 | result_length = 0; | |
1563 | return 0; | |
1564 | } | |
1565 | ||
1566 | if (len > result_length - offset) | |
1567 | len = result_length - offset; | |
1568 | ||
1569 | memcpy (readbuf, result + offset, len); | |
1570 | return len; | |
1571 | } | |
1572 | ||
78d85199 YQ |
1573 | /* Handle qXfer:fdpic:read. */ |
1574 | ||
1575 | static int | |
1576 | handle_qxfer_fdpic (const char *annex, gdb_byte *readbuf, | |
1577 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1578 | { | |
1579 | if (the_target->read_loadmap == NULL) | |
1580 | return -2; | |
1581 | ||
1582 | if (!target_running ()) | |
1583 | return -1; | |
1584 | ||
1585 | return (*the_target->read_loadmap) (annex, offset, readbuf, len); | |
1586 | } | |
1587 | ||
9accd112 MM |
1588 | /* Handle qXfer:btrace:read. */ |
1589 | ||
1590 | static int | |
1591 | handle_qxfer_btrace (const char *annex, | |
1592 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1593 | ULONGEST offset, LONGEST len) | |
1594 | { | |
1595 | static struct buffer cache; | |
1596 | struct thread_info *thread; | |
969c39fb | 1597 | int type, result; |
9accd112 MM |
1598 | |
1599 | if (the_target->read_btrace == NULL || writebuf != NULL) | |
1600 | return -2; | |
1601 | ||
1602 | if (!target_running ()) | |
1603 | return -1; | |
1604 | ||
1605 | if (ptid_equal (general_thread, null_ptid) | |
1606 | || ptid_equal (general_thread, minus_one_ptid)) | |
1607 | { | |
1608 | strcpy (own_buf, "E.Must select a single thread."); | |
1609 | return -3; | |
1610 | } | |
1611 | ||
1612 | thread = find_thread_ptid (general_thread); | |
1613 | if (thread == NULL) | |
1614 | { | |
1615 | strcpy (own_buf, "E.No such thread."); | |
1616 | return -3; | |
1617 | } | |
1618 | ||
1619 | if (thread->btrace == NULL) | |
1620 | { | |
1621 | strcpy (own_buf, "E.Btrace not enabled."); | |
1622 | return -3; | |
1623 | } | |
1624 | ||
1625 | if (strcmp (annex, "all") == 0) | |
864089d2 | 1626 | type = BTRACE_READ_ALL; |
9accd112 | 1627 | else if (strcmp (annex, "new") == 0) |
864089d2 | 1628 | type = BTRACE_READ_NEW; |
969c39fb MM |
1629 | else if (strcmp (annex, "delta") == 0) |
1630 | type = BTRACE_READ_DELTA; | |
9accd112 MM |
1631 | else |
1632 | { | |
1633 | strcpy (own_buf, "E.Bad annex."); | |
1634 | return -3; | |
1635 | } | |
1636 | ||
1637 | if (offset == 0) | |
1638 | { | |
1639 | buffer_free (&cache); | |
1640 | ||
969c39fb MM |
1641 | result = target_read_btrace (thread->btrace, &cache, type); |
1642 | if (result != 0) | |
1643 | { | |
1644 | memcpy (own_buf, cache.buffer, cache.used_size); | |
1645 | return -3; | |
1646 | } | |
9accd112 MM |
1647 | } |
1648 | else if (offset > cache.used_size) | |
1649 | { | |
1650 | buffer_free (&cache); | |
1651 | return -3; | |
1652 | } | |
1653 | ||
1654 | if (len > cache.used_size - offset) | |
1655 | len = cache.used_size - offset; | |
1656 | ||
1657 | memcpy (readbuf, cache.buffer + offset, len); | |
1658 | ||
1659 | return len; | |
1660 | } | |
1661 | ||
f4abbc16 MM |
1662 | /* Handle qXfer:btrace-conf:read. */ |
1663 | ||
1664 | static int | |
1665 | handle_qxfer_btrace_conf (const char *annex, | |
1666 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1667 | ULONGEST offset, LONGEST len) | |
1668 | { | |
1669 | static struct buffer cache; | |
1670 | struct thread_info *thread; | |
1671 | int result; | |
1672 | ||
1673 | if (the_target->read_btrace_conf == NULL || writebuf != NULL) | |
1674 | return -2; | |
1675 | ||
1676 | if (annex[0] != '\0' || !target_running ()) | |
1677 | return -1; | |
1678 | ||
1679 | if (ptid_equal (general_thread, null_ptid) | |
1680 | || ptid_equal (general_thread, minus_one_ptid)) | |
1681 | { | |
1682 | strcpy (own_buf, "E.Must select a single thread."); | |
1683 | return -3; | |
1684 | } | |
1685 | ||
1686 | thread = find_thread_ptid (general_thread); | |
1687 | if (thread == NULL) | |
1688 | { | |
1689 | strcpy (own_buf, "E.No such thread."); | |
1690 | return -3; | |
1691 | } | |
1692 | ||
1693 | if (thread->btrace == NULL) | |
1694 | { | |
1695 | strcpy (own_buf, "E.Btrace not enabled."); | |
1696 | return -3; | |
1697 | } | |
1698 | ||
1699 | if (offset == 0) | |
1700 | { | |
1701 | buffer_free (&cache); | |
1702 | ||
1703 | result = target_read_btrace_conf (thread->btrace, &cache); | |
1704 | if (result != 0) | |
1705 | { | |
1706 | memcpy (own_buf, cache.buffer, cache.used_size); | |
1707 | return -3; | |
1708 | } | |
1709 | } | |
1710 | else if (offset > cache.used_size) | |
1711 | { | |
1712 | buffer_free (&cache); | |
1713 | return -3; | |
1714 | } | |
1715 | ||
1716 | if (len > cache.used_size - offset) | |
1717 | len = cache.used_size - offset; | |
1718 | ||
1719 | memcpy (readbuf, cache.buffer + offset, len); | |
1720 | ||
1721 | return len; | |
1722 | } | |
1723 | ||
d08aafef PA |
1724 | static const struct qxfer qxfer_packets[] = |
1725 | { | |
1726 | { "auxv", handle_qxfer_auxv }, | |
9accd112 | 1727 | { "btrace", handle_qxfer_btrace }, |
f4abbc16 | 1728 | { "btrace-conf", handle_qxfer_btrace_conf }, |
e57f1de3 | 1729 | { "exec-file", handle_qxfer_exec_file}, |
78d85199 | 1730 | { "fdpic", handle_qxfer_fdpic}, |
d08aafef PA |
1731 | { "features", handle_qxfer_features }, |
1732 | { "libraries", handle_qxfer_libraries }, | |
2268b414 | 1733 | { "libraries-svr4", handle_qxfer_libraries_svr4 }, |
d08aafef PA |
1734 | { "osdata", handle_qxfer_osdata }, |
1735 | { "siginfo", handle_qxfer_siginfo }, | |
1736 | { "spu", handle_qxfer_spu }, | |
1737 | { "statictrace", handle_qxfer_statictrace }, | |
1738 | { "threads", handle_qxfer_threads }, | |
b3b9301e | 1739 | { "traceframe-info", handle_qxfer_traceframe_info }, |
d08aafef PA |
1740 | }; |
1741 | ||
1742 | static int | |
1743 | handle_qxfer (char *own_buf, int packet_len, int *new_packet_len_p) | |
1744 | { | |
1745 | int i; | |
1746 | char *object; | |
1747 | char *rw; | |
1748 | char *annex; | |
1749 | char *offset; | |
1750 | ||
61012eef | 1751 | if (!startswith (own_buf, "qXfer:")) |
d08aafef PA |
1752 | return 0; |
1753 | ||
1754 | /* Grab the object, r/w and annex. */ | |
1755 | if (decode_xfer (own_buf + 6, &object, &rw, &annex, &offset) < 0) | |
1756 | { | |
1757 | write_enn (own_buf); | |
1758 | return 1; | |
1759 | } | |
1760 | ||
1761 | for (i = 0; | |
1762 | i < sizeof (qxfer_packets) / sizeof (qxfer_packets[0]); | |
1763 | i++) | |
1764 | { | |
1765 | const struct qxfer *q = &qxfer_packets[i]; | |
1766 | ||
1767 | if (strcmp (object, q->object) == 0) | |
1768 | { | |
1769 | if (strcmp (rw, "read") == 0) | |
1770 | { | |
1771 | unsigned char *data; | |
1772 | int n; | |
1773 | CORE_ADDR ofs; | |
1774 | unsigned int len; | |
1775 | ||
1776 | /* Grab the offset and length. */ | |
1777 | if (decode_xfer_read (offset, &ofs, &len) < 0) | |
1778 | { | |
1779 | write_enn (own_buf); | |
1780 | return 1; | |
1781 | } | |
1782 | ||
1783 | /* Read one extra byte, as an indicator of whether there is | |
1784 | more. */ | |
1785 | if (len > PBUFSIZ - 2) | |
1786 | len = PBUFSIZ - 2; | |
1787 | data = malloc (len + 1); | |
1788 | if (data == NULL) | |
1789 | { | |
1790 | write_enn (own_buf); | |
1791 | return 1; | |
1792 | } | |
1793 | n = (*q->xfer) (annex, data, NULL, ofs, len + 1); | |
1794 | if (n == -2) | |
1795 | { | |
1796 | free (data); | |
1797 | return 0; | |
1798 | } | |
5cc22e4c MM |
1799 | else if (n == -3) |
1800 | { | |
1801 | /* Preserve error message. */ | |
1802 | } | |
d08aafef PA |
1803 | else if (n < 0) |
1804 | write_enn (own_buf); | |
1805 | else if (n > len) | |
1806 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); | |
1807 | else | |
1808 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); | |
1809 | ||
1810 | free (data); | |
1811 | return 1; | |
1812 | } | |
1813 | else if (strcmp (rw, "write") == 0) | |
1814 | { | |
1815 | int n; | |
1816 | unsigned int len; | |
1817 | CORE_ADDR ofs; | |
1818 | unsigned char *data; | |
1819 | ||
1820 | strcpy (own_buf, "E00"); | |
1821 | data = malloc (packet_len - (offset - own_buf)); | |
1822 | if (data == NULL) | |
1823 | { | |
1824 | write_enn (own_buf); | |
1825 | return 1; | |
1826 | } | |
1827 | if (decode_xfer_write (offset, packet_len - (offset - own_buf), | |
1828 | &ofs, &len, data) < 0) | |
1829 | { | |
1830 | free (data); | |
1831 | write_enn (own_buf); | |
1832 | return 1; | |
1833 | } | |
1834 | ||
1835 | n = (*q->xfer) (annex, NULL, data, ofs, len); | |
1836 | if (n == -2) | |
1837 | { | |
1838 | free (data); | |
1839 | return 0; | |
1840 | } | |
5cc22e4c MM |
1841 | else if (n == -3) |
1842 | { | |
1843 | /* Preserve error message. */ | |
1844 | } | |
d08aafef PA |
1845 | else if (n < 0) |
1846 | write_enn (own_buf); | |
1847 | else | |
1848 | sprintf (own_buf, "%x", n); | |
dc146f7c | 1849 | |
d08aafef PA |
1850 | free (data); |
1851 | return 1; | |
1852 | } | |
dc146f7c | 1853 | |
d08aafef PA |
1854 | return 0; |
1855 | } | |
1856 | } | |
dc146f7c | 1857 | |
d08aafef | 1858 | return 0; |
dc146f7c VP |
1859 | } |
1860 | ||
30ba68cb MS |
1861 | /* Table used by the crc32 function to calcuate the checksum. */ |
1862 | ||
1863 | static unsigned int crc32_table[256] = | |
1864 | {0, 0}; | |
1865 | ||
1866 | /* Compute 32 bit CRC from inferior memory. | |
1867 | ||
1868 | On success, return 32 bit CRC. | |
1869 | On failure, return (unsigned long long) -1. */ | |
1870 | ||
1871 | static unsigned long long | |
1872 | crc32 (CORE_ADDR base, int len, unsigned int crc) | |
1873 | { | |
1874 | if (!crc32_table[1]) | |
1875 | { | |
1876 | /* Initialize the CRC table and the decoding table. */ | |
1877 | int i, j; | |
1878 | unsigned int c; | |
1879 | ||
1880 | for (i = 0; i < 256; i++) | |
1881 | { | |
1882 | for (c = i << 24, j = 8; j > 0; --j) | |
1883 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
1884 | crc32_table[i] = c; | |
1885 | } | |
1886 | } | |
1887 | ||
1888 | while (len--) | |
1889 | { | |
1890 | unsigned char byte = 0; | |
1891 | ||
1892 | /* Return failure if memory read fails. */ | |
1893 | if (read_inferior_memory (base, &byte, 1) != 0) | |
1894 | return (unsigned long long) -1; | |
1895 | ||
1896 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ byte) & 255]; | |
1897 | base++; | |
1898 | } | |
1899 | return (unsigned long long) crc; | |
1900 | } | |
1901 | ||
043c3577 MM |
1902 | /* Add supported btrace packets to BUF. */ |
1903 | ||
1904 | static void | |
1905 | supported_btrace_packets (char *buf) | |
1906 | { | |
b20a6524 MM |
1907 | int btrace_supported = 0; |
1908 | ||
043c3577 | 1909 | if (target_supports_btrace (BTRACE_FORMAT_BTS)) |
d33501a5 MM |
1910 | { |
1911 | strcat (buf, ";Qbtrace:bts+"); | |
1912 | strcat (buf, ";Qbtrace-conf:bts:size+"); | |
b20a6524 MM |
1913 | |
1914 | btrace_supported = 1; | |
d33501a5 | 1915 | } |
b20a6524 MM |
1916 | |
1917 | if (target_supports_btrace (BTRACE_FORMAT_PT)) | |
1918 | { | |
1919 | strcat (buf, ";Qbtrace:pt+"); | |
1920 | strcat (buf, ";Qbtrace-conf:pt:size+"); | |
1921 | ||
1922 | btrace_supported = 1; | |
1923 | } | |
1924 | ||
1925 | if (!btrace_supported) | |
043c3577 MM |
1926 | return; |
1927 | ||
1928 | strcat (buf, ";Qbtrace:off+"); | |
1929 | strcat (buf, ";qXfer:btrace:read+"); | |
f4abbc16 | 1930 | strcat (buf, ";qXfer:btrace-conf:read+"); |
043c3577 MM |
1931 | } |
1932 | ||
ce3a066d | 1933 | /* Handle all of the extended 'q' packets. */ |
d08aafef | 1934 | |
ce3a066d | 1935 | void |
0e7f50da | 1936 | handle_query (char *own_buf, int packet_len, int *new_packet_len_p) |
ce3a066d | 1937 | { |
0d62e5e8 DJ |
1938 | static struct inferior_list_entry *thread_ptr; |
1939 | ||
bb63802a | 1940 | /* Reply the current thread id. */ |
db42f210 | 1941 | if (strcmp ("qC", own_buf) == 0 && !disable_packet_qC) |
bb63802a | 1942 | { |
95954743 | 1943 | ptid_t gdb_id; |
2d717e4f | 1944 | require_running (own_buf); |
bd99dc85 | 1945 | |
95954743 PA |
1946 | if (!ptid_equal (general_thread, null_ptid) |
1947 | && !ptid_equal (general_thread, minus_one_ptid)) | |
bd99dc85 PA |
1948 | gdb_id = general_thread; |
1949 | else | |
1950 | { | |
649ebbca | 1951 | thread_ptr = get_first_inferior (&all_threads); |
bd99dc85 PA |
1952 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); |
1953 | } | |
1954 | ||
95954743 PA |
1955 | sprintf (own_buf, "QC"); |
1956 | own_buf += 2; | |
4b812f4e | 1957 | write_ptid (own_buf, gdb_id); |
bb63802a UW |
1958 | return; |
1959 | } | |
1960 | ||
ce3a066d DJ |
1961 | if (strcmp ("qSymbol::", own_buf) == 0) |
1962 | { | |
d3bbe7a0 PA |
1963 | /* GDB is suggesting new symbols have been loaded. This may |
1964 | mean a new shared library has been detected as loaded, so | |
1965 | take the opportunity to check if breakpoints we think are | |
1966 | inserted, still are. Note that it isn't guaranteed that | |
1967 | we'll see this when a shared library is loaded, and nor will | |
1968 | we see this for unloads (although breakpoints in unloaded | |
1969 | libraries shouldn't trigger), as GDB may not find symbols for | |
1970 | the library at all. We also re-validate breakpoints when we | |
1971 | see a second GDB breakpoint for the same address, and or when | |
1972 | we access breakpoint shadows. */ | |
1973 | validate_breakpoints (); | |
1974 | ||
fa593d66 PA |
1975 | if (target_supports_tracepoints ()) |
1976 | tracepoint_look_up_symbols (); | |
1977 | ||
2d717e4f | 1978 | if (target_running () && the_target->look_up_symbols != NULL) |
2f2893d9 DJ |
1979 | (*the_target->look_up_symbols) (); |
1980 | ||
ce3a066d DJ |
1981 | strcpy (own_buf, "OK"); |
1982 | return; | |
1983 | } | |
1984 | ||
db42f210 | 1985 | if (!disable_packet_qfThreadInfo) |
0d62e5e8 | 1986 | { |
db42f210 | 1987 | if (strcmp ("qfThreadInfo", own_buf) == 0) |
0d62e5e8 | 1988 | { |
95954743 PA |
1989 | ptid_t gdb_id; |
1990 | ||
db42f210 | 1991 | require_running (own_buf); |
649ebbca | 1992 | thread_ptr = get_first_inferior (&all_threads); |
95954743 PA |
1993 | |
1994 | *own_buf++ = 'm'; | |
1995 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
1996 | write_ptid (own_buf, gdb_id); | |
0d62e5e8 DJ |
1997 | thread_ptr = thread_ptr->next; |
1998 | return; | |
1999 | } | |
db42f210 PA |
2000 | |
2001 | if (strcmp ("qsThreadInfo", own_buf) == 0) | |
0d62e5e8 | 2002 | { |
95954743 PA |
2003 | ptid_t gdb_id; |
2004 | ||
db42f210 PA |
2005 | require_running (own_buf); |
2006 | if (thread_ptr != NULL) | |
2007 | { | |
95954743 PA |
2008 | *own_buf++ = 'm'; |
2009 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
2010 | write_ptid (own_buf, gdb_id); | |
db42f210 PA |
2011 | thread_ptr = thread_ptr->next; |
2012 | return; | |
2013 | } | |
2014 | else | |
2015 | { | |
2016 | sprintf (own_buf, "l"); | |
2017 | return; | |
2018 | } | |
0d62e5e8 DJ |
2019 | } |
2020 | } | |
aa691b87 | 2021 | |
52fb6437 NS |
2022 | if (the_target->read_offsets != NULL |
2023 | && strcmp ("qOffsets", own_buf) == 0) | |
2024 | { | |
2025 | CORE_ADDR text, data; | |
2d717e4f DJ |
2026 | |
2027 | require_running (own_buf); | |
52fb6437 NS |
2028 | if (the_target->read_offsets (&text, &data)) |
2029 | sprintf (own_buf, "Text=%lX;Data=%lX;Bss=%lX", | |
2030 | (long)text, (long)data, (long)data); | |
2031 | else | |
2032 | write_enn (own_buf); | |
1b3f6016 | 2033 | |
52fb6437 NS |
2034 | return; |
2035 | } | |
2036 | ||
be2a5f71 | 2037 | /* Protocol features query. */ |
61012eef | 2038 | if (startswith (own_buf, "qSupported") |
be2a5f71 DJ |
2039 | && (own_buf[10] == ':' || own_buf[10] == '\0')) |
2040 | { | |
95954743 | 2041 | char *p = &own_buf[10]; |
fa593d66 | 2042 | int gdb_supports_qRelocInsn = 0; |
95954743 | 2043 | |
1570b33e L |
2044 | /* Start processing qSupported packet. */ |
2045 | target_process_qsupported (NULL); | |
2046 | ||
95954743 PA |
2047 | /* Process each feature being provided by GDB. The first |
2048 | feature will follow a ':', and latter features will follow | |
2049 | ';'. */ | |
2050 | if (*p == ':') | |
d149dd1d PA |
2051 | { |
2052 | char **qsupported = NULL; | |
2053 | int count = 0; | |
2054 | int i; | |
2055 | ||
2056 | /* Two passes, to avoid nested strtok calls in | |
2057 | target_process_qsupported. */ | |
2058 | for (p = strtok (p + 1, ";"); | |
2059 | p != NULL; | |
2060 | p = strtok (NULL, ";")) | |
2061 | { | |
2062 | count++; | |
2063 | qsupported = xrealloc (qsupported, count * sizeof (char *)); | |
2064 | qsupported[count - 1] = xstrdup (p); | |
2065 | } | |
2066 | ||
2067 | for (i = 0; i < count; i++) | |
2068 | { | |
2069 | p = qsupported[i]; | |
2070 | if (strcmp (p, "multiprocess+") == 0) | |
2071 | { | |
2072 | /* GDB supports and wants multi-process support if | |
2073 | possible. */ | |
2074 | if (target_supports_multi_process ()) | |
2075 | multi_process = 1; | |
2076 | } | |
fa593d66 PA |
2077 | else if (strcmp (p, "qRelocInsn+") == 0) |
2078 | { | |
2079 | /* GDB supports relocate instruction requests. */ | |
2080 | gdb_supports_qRelocInsn = 1; | |
2081 | } | |
1ec68e26 PA |
2082 | else if (strcmp (p, "swbreak+") == 0) |
2083 | { | |
2084 | /* GDB wants us to report whether a trap is caused | |
2085 | by a software breakpoint and for us to handle PC | |
2086 | adjustment if necessary on this target. */ | |
2087 | if (target_supports_stopped_by_sw_breakpoint ()) | |
2088 | swbreak_feature = 1; | |
2089 | } | |
2090 | else if (strcmp (p, "hwbreak+") == 0) | |
2091 | { | |
2092 | /* GDB wants us to report whether a trap is caused | |
2093 | by a hardware breakpoint. */ | |
2094 | if (target_supports_stopped_by_hw_breakpoint ()) | |
2095 | hwbreak_feature = 1; | |
2096 | } | |
89245bc0 DB |
2097 | else if (strcmp (p, "fork-events+") == 0) |
2098 | { | |
2099 | /* GDB supports and wants fork events if possible. */ | |
2100 | if (target_supports_fork_events ()) | |
2101 | report_fork_events = 1; | |
2102 | } | |
2103 | else if (strcmp (p, "vfork-events+") == 0) | |
2104 | { | |
2105 | /* GDB supports and wants vfork events if possible. */ | |
2106 | if (target_supports_vfork_events ()) | |
2107 | report_vfork_events = 1; | |
2108 | } | |
d149dd1d PA |
2109 | else |
2110 | target_process_qsupported (p); | |
2111 | ||
2112 | free (p); | |
2113 | } | |
2114 | ||
2115 | free (qsupported); | |
2116 | } | |
95954743 | 2117 | |
9b224c5e PA |
2118 | sprintf (own_buf, |
2119 | "PacketSize=%x;QPassSignals+;QProgramSignals+", | |
2120 | PBUFSIZ - 1); | |
0876f84a | 2121 | |
2268b414 | 2122 | if (the_target->qxfer_libraries_svr4 != NULL) |
b1fbec62 GB |
2123 | strcat (own_buf, ";qXfer:libraries-svr4:read+" |
2124 | ";augmented-libraries-svr4-read+"); | |
2268b414 JK |
2125 | else |
2126 | { | |
2127 | /* We do not have any hook to indicate whether the non-SVR4 target | |
2128 | backend supports qXfer:libraries:read, so always report it. */ | |
2129 | strcat (own_buf, ";qXfer:libraries:read+"); | |
2130 | } | |
255e7678 | 2131 | |
0876f84a | 2132 | if (the_target->read_auxv != NULL) |
9f2e1e63 | 2133 | strcat (own_buf, ";qXfer:auxv:read+"); |
2d717e4f | 2134 | |
0e7f50da UW |
2135 | if (the_target->qxfer_spu != NULL) |
2136 | strcat (own_buf, ";qXfer:spu:read+;qXfer:spu:write+"); | |
0876f84a | 2137 | |
4aa995e1 PA |
2138 | if (the_target->qxfer_siginfo != NULL) |
2139 | strcat (own_buf, ";qXfer:siginfo:read+;qXfer:siginfo:write+"); | |
2140 | ||
78d85199 YQ |
2141 | if (the_target->read_loadmap != NULL) |
2142 | strcat (own_buf, ";qXfer:fdpic:read+"); | |
2143 | ||
221c031f UW |
2144 | /* We always report qXfer:features:read, as targets may |
2145 | install XML files on a subsequent call to arch_setup. | |
2146 | If we reported to GDB on startup that we don't support | |
2147 | qXfer:feature:read at all, we will never be re-queried. */ | |
2148 | strcat (own_buf, ";qXfer:features:read+"); | |
23181151 | 2149 | |
a6f3e723 SL |
2150 | if (transport_is_reliable) |
2151 | strcat (own_buf, ";QStartNoAckMode+"); | |
07e059b5 VP |
2152 | |
2153 | if (the_target->qxfer_osdata != NULL) | |
1b3f6016 | 2154 | strcat (own_buf, ";qXfer:osdata:read+"); |
07e059b5 | 2155 | |
cf8fd78b PA |
2156 | if (target_supports_multi_process ()) |
2157 | strcat (own_buf, ";multiprocess+"); | |
95954743 | 2158 | |
89245bc0 DB |
2159 | if (target_supports_fork_events ()) |
2160 | strcat (own_buf, ";fork-events+"); | |
2161 | ||
2162 | if (target_supports_vfork_events ()) | |
2163 | strcat (own_buf, ";vfork-events+"); | |
2164 | ||
bd99dc85 PA |
2165 | if (target_supports_non_stop ()) |
2166 | strcat (own_buf, ";QNonStop+"); | |
2167 | ||
03583c20 UW |
2168 | if (target_supports_disable_randomization ()) |
2169 | strcat (own_buf, ";QDisableRandomization+"); | |
2170 | ||
dc146f7c VP |
2171 | strcat (own_buf, ";qXfer:threads:read+"); |
2172 | ||
219f2f23 PA |
2173 | if (target_supports_tracepoints ()) |
2174 | { | |
2175 | strcat (own_buf, ";ConditionalTracepoints+"); | |
2176 | strcat (own_buf, ";TraceStateVariables+"); | |
2177 | strcat (own_buf, ";TracepointSource+"); | |
8336d594 | 2178 | strcat (own_buf, ";DisconnectedTracing+"); |
fa593d66 PA |
2179 | if (gdb_supports_qRelocInsn && target_supports_fast_tracepoints ()) |
2180 | strcat (own_buf, ";FastTracepoints+"); | |
0fb4aa4b | 2181 | strcat (own_buf, ";StaticTracepoints+"); |
1e4d1764 | 2182 | strcat (own_buf, ";InstallInTrace+"); |
0fb4aa4b | 2183 | strcat (own_buf, ";qXfer:statictrace:read+"); |
b3b9301e | 2184 | strcat (own_buf, ";qXfer:traceframe-info:read+"); |
d248b706 | 2185 | strcat (own_buf, ";EnableDisableTracepoints+"); |
f6f899bf | 2186 | strcat (own_buf, ";QTBuffer:size+"); |
3065dfb6 | 2187 | strcat (own_buf, ";tracenz+"); |
219f2f23 PA |
2188 | } |
2189 | ||
d3ce09f5 | 2190 | /* Support target-side breakpoint conditions and commands. */ |
45614f15 YQ |
2191 | if (target_supports_conditional_breakpoints ()) |
2192 | strcat (own_buf, ";ConditionalBreakpoints+"); | |
d3ce09f5 | 2193 | strcat (own_buf, ";BreakpointCommands+"); |
9f3a5c85 | 2194 | |
d1feda86 YQ |
2195 | if (target_supports_agent ()) |
2196 | strcat (own_buf, ";QAgent+"); | |
2197 | ||
043c3577 | 2198 | supported_btrace_packets (own_buf); |
9accd112 | 2199 | |
1ec68e26 PA |
2200 | if (target_supports_stopped_by_sw_breakpoint ()) |
2201 | strcat (own_buf, ";swbreak+"); | |
2202 | ||
2203 | if (target_supports_stopped_by_hw_breakpoint ()) | |
2204 | strcat (own_buf, ";hwbreak+"); | |
2205 | ||
e57f1de3 GB |
2206 | if (the_target->pid_to_exec_file != NULL) |
2207 | strcat (own_buf, ";qXfer:exec-file:read+"); | |
2208 | ||
14d2069a GB |
2209 | /* Reinitialize components as needed for the new connection. */ |
2210 | hostio_handle_new_gdb_connection (); | |
de0d863e DB |
2211 | target_handle_new_gdb_connection (); |
2212 | ||
be2a5f71 DJ |
2213 | return; |
2214 | } | |
2215 | ||
dae5f5cf DJ |
2216 | /* Thread-local storage support. */ |
2217 | if (the_target->get_tls_address != NULL | |
61012eef | 2218 | && startswith (own_buf, "qGetTLSAddr:")) |
dae5f5cf DJ |
2219 | { |
2220 | char *p = own_buf + 12; | |
5b1c542e | 2221 | CORE_ADDR parts[2], address = 0; |
dae5f5cf | 2222 | int i, err; |
95954743 | 2223 | ptid_t ptid = null_ptid; |
dae5f5cf | 2224 | |
2d717e4f DJ |
2225 | require_running (own_buf); |
2226 | ||
dae5f5cf DJ |
2227 | for (i = 0; i < 3; i++) |
2228 | { | |
2229 | char *p2; | |
2230 | int len; | |
2231 | ||
2232 | if (p == NULL) | |
2233 | break; | |
2234 | ||
2235 | p2 = strchr (p, ','); | |
2236 | if (p2) | |
2237 | { | |
2238 | len = p2 - p; | |
2239 | p2++; | |
2240 | } | |
2241 | else | |
2242 | { | |
2243 | len = strlen (p); | |
2244 | p2 = NULL; | |
2245 | } | |
2246 | ||
5b1c542e | 2247 | if (i == 0) |
95954743 | 2248 | ptid = read_ptid (p, NULL); |
5b1c542e PA |
2249 | else |
2250 | decode_address (&parts[i - 1], p, len); | |
dae5f5cf DJ |
2251 | p = p2; |
2252 | } | |
2253 | ||
2254 | if (p != NULL || i < 3) | |
2255 | err = 1; | |
2256 | else | |
2257 | { | |
e09875d4 | 2258 | struct thread_info *thread = find_thread_ptid (ptid); |
dae5f5cf DJ |
2259 | |
2260 | if (thread == NULL) | |
2261 | err = 2; | |
2262 | else | |
5b1c542e | 2263 | err = the_target->get_tls_address (thread, parts[0], parts[1], |
dae5f5cf DJ |
2264 | &address); |
2265 | } | |
2266 | ||
2267 | if (err == 0) | |
2268 | { | |
c6f46ca0 | 2269 | strcpy (own_buf, paddress(address)); |
dae5f5cf DJ |
2270 | return; |
2271 | } | |
2272 | else if (err > 0) | |
2273 | { | |
2274 | write_enn (own_buf); | |
2275 | return; | |
2276 | } | |
2277 | ||
2278 | /* Otherwise, pretend we do not understand this packet. */ | |
2279 | } | |
2280 | ||
711e434b PM |
2281 | /* Windows OS Thread Information Block address support. */ |
2282 | if (the_target->get_tib_address != NULL | |
61012eef | 2283 | && startswith (own_buf, "qGetTIBAddr:")) |
711e434b PM |
2284 | { |
2285 | char *annex; | |
2286 | int n; | |
2287 | CORE_ADDR tlb; | |
2288 | ptid_t ptid = read_ptid (own_buf + 12, &annex); | |
2289 | ||
2290 | n = (*the_target->get_tib_address) (ptid, &tlb); | |
2291 | if (n == 1) | |
2292 | { | |
c6f46ca0 | 2293 | strcpy (own_buf, paddress(tlb)); |
711e434b PM |
2294 | return; |
2295 | } | |
2296 | else if (n == 0) | |
2297 | { | |
2298 | write_enn (own_buf); | |
2299 | return; | |
2300 | } | |
2301 | return; | |
2302 | } | |
2303 | ||
c74d0ad8 | 2304 | /* Handle "monitor" commands. */ |
61012eef | 2305 | if (startswith (own_buf, "qRcmd,")) |
c74d0ad8 | 2306 | { |
aef93bd7 | 2307 | char *mon = malloc (PBUFSIZ); |
c74d0ad8 DJ |
2308 | int len = strlen (own_buf + 6); |
2309 | ||
aef93bd7 DE |
2310 | if (mon == NULL) |
2311 | { | |
2312 | write_enn (own_buf); | |
2313 | return; | |
2314 | } | |
2315 | ||
ff0e980e TT |
2316 | if ((len % 2) != 0 |
2317 | || hex2bin (own_buf + 6, (gdb_byte *) mon, len / 2) != len / 2) | |
c74d0ad8 DJ |
2318 | { |
2319 | write_enn (own_buf); | |
2320 | free (mon); | |
2321 | return; | |
2322 | } | |
2323 | mon[len / 2] = '\0'; | |
2324 | ||
2325 | write_ok (own_buf); | |
2326 | ||
cdbfd419 PP |
2327 | if (the_target->handle_monitor_command == NULL |
2328 | || (*the_target->handle_monitor_command) (mon) == 0) | |
2329 | /* Default processing. */ | |
d73f2619 | 2330 | handle_monitor_command (mon, own_buf); |
c74d0ad8 DJ |
2331 | |
2332 | free (mon); | |
2333 | return; | |
2334 | } | |
2335 | ||
61012eef | 2336 | if (startswith (own_buf, "qSearch:memory:")) |
08388c79 DE |
2337 | { |
2338 | require_running (own_buf); | |
2339 | handle_search_memory (own_buf, packet_len); | |
2340 | return; | |
2341 | } | |
2342 | ||
95954743 | 2343 | if (strcmp (own_buf, "qAttached") == 0 |
61012eef | 2344 | || startswith (own_buf, "qAttached:")) |
0b16c5cf | 2345 | { |
95954743 PA |
2346 | struct process_info *process; |
2347 | ||
2348 | if (own_buf[sizeof ("qAttached") - 1]) | |
2349 | { | |
2350 | int pid = strtoul (own_buf + sizeof ("qAttached:") - 1, NULL, 16); | |
2351 | process = (struct process_info *) | |
2352 | find_inferior_id (&all_processes, pid_to_ptid (pid)); | |
2353 | } | |
2354 | else | |
2355 | { | |
2356 | require_running (own_buf); | |
2357 | process = current_process (); | |
2358 | } | |
2359 | ||
2360 | if (process == NULL) | |
2361 | { | |
2362 | write_enn (own_buf); | |
2363 | return; | |
2364 | } | |
2365 | ||
2366 | strcpy (own_buf, process->attached ? "1" : "0"); | |
0b16c5cf PA |
2367 | return; |
2368 | } | |
2369 | ||
61012eef | 2370 | if (startswith (own_buf, "qCRC:")) |
30ba68cb MS |
2371 | { |
2372 | /* CRC check (compare-section). */ | |
2373 | char *comma; | |
aca22551 | 2374 | ULONGEST base; |
30ba68cb MS |
2375 | int len; |
2376 | unsigned long long crc; | |
2377 | ||
2378 | require_running (own_buf); | |
aca22551 | 2379 | comma = unpack_varlen_hex (own_buf + 5, &base); |
30ba68cb MS |
2380 | if (*comma++ != ',') |
2381 | { | |
2382 | write_enn (own_buf); | |
2383 | return; | |
2384 | } | |
2385 | len = strtoul (comma, NULL, 16); | |
2386 | crc = crc32 (base, len, 0xffffffff); | |
2387 | /* Check for memory failure. */ | |
2388 | if (crc == (unsigned long long) -1) | |
2389 | { | |
2390 | write_enn (own_buf); | |
2391 | return; | |
2392 | } | |
2393 | sprintf (own_buf, "C%lx", (unsigned long) crc); | |
2394 | return; | |
2395 | } | |
2396 | ||
d08aafef PA |
2397 | if (handle_qxfer (own_buf, packet_len, new_packet_len_p)) |
2398 | return; | |
2399 | ||
219f2f23 PA |
2400 | if (target_supports_tracepoints () && handle_tracepoint_query (own_buf)) |
2401 | return; | |
2402 | ||
ce3a066d DJ |
2403 | /* Otherwise we didn't know what packet it was. Say we didn't |
2404 | understand it. */ | |
2405 | own_buf[0] = 0; | |
2406 | } | |
2407 | ||
ce1a5b52 | 2408 | static void gdb_wants_all_threads_stopped (void); |
b7ea362b PA |
2409 | static void resume (struct thread_resume *actions, size_t n); |
2410 | ||
649ebbca DE |
2411 | /* The callback that is passed to visit_actioned_threads. */ |
2412 | typedef int (visit_actioned_threads_callback_ftype) | |
2413 | (const struct thread_resume *, struct thread_info *); | |
2414 | ||
2415 | /* Struct to pass data to visit_actioned_threads. */ | |
2416 | ||
2417 | struct visit_actioned_threads_data | |
2418 | { | |
2419 | const struct thread_resume *actions; | |
2420 | size_t num_actions; | |
2421 | visit_actioned_threads_callback_ftype *callback; | |
2422 | }; | |
2423 | ||
b7ea362b PA |
2424 | /* Call CALLBACK for any thread to which ACTIONS applies to. Returns |
2425 | true if CALLBACK returns true. Returns false if no matching thread | |
649ebbca DE |
2426 | is found or CALLBACK results false. |
2427 | Note: This function is itself a callback for find_inferior. */ | |
b7ea362b PA |
2428 | |
2429 | static int | |
649ebbca | 2430 | visit_actioned_threads (struct inferior_list_entry *entry, void *datap) |
b7ea362b | 2431 | { |
649ebbca DE |
2432 | struct visit_actioned_threads_data *data = datap; |
2433 | const struct thread_resume *actions = data->actions; | |
2434 | size_t num_actions = data->num_actions; | |
2435 | visit_actioned_threads_callback_ftype *callback = data->callback; | |
2436 | size_t i; | |
b7ea362b | 2437 | |
649ebbca | 2438 | for (i = 0; i < num_actions; i++) |
b7ea362b | 2439 | { |
649ebbca | 2440 | const struct thread_resume *action = &actions[i]; |
b7ea362b | 2441 | |
649ebbca DE |
2442 | if (ptid_equal (action->thread, minus_one_ptid) |
2443 | || ptid_equal (action->thread, entry->id) | |
2444 | || ((ptid_get_pid (action->thread) | |
2445 | == ptid_get_pid (entry->id)) | |
2446 | && ptid_get_lwp (action->thread) == -1)) | |
b7ea362b | 2447 | { |
649ebbca | 2448 | struct thread_info *thread = (struct thread_info *) entry; |
b7ea362b | 2449 | |
649ebbca DE |
2450 | if ((*callback) (action, thread)) |
2451 | return 1; | |
b7ea362b PA |
2452 | } |
2453 | } | |
2454 | ||
2455 | return 0; | |
2456 | } | |
2457 | ||
2458 | /* Callback for visit_actioned_threads. If the thread has a pending | |
2459 | status to report, report it now. */ | |
2460 | ||
2461 | static int | |
2462 | handle_pending_status (const struct thread_resume *resumption, | |
2463 | struct thread_info *thread) | |
2464 | { | |
2465 | if (thread->status_pending_p) | |
2466 | { | |
2467 | thread->status_pending_p = 0; | |
2468 | ||
2469 | last_status = thread->last_status; | |
2470 | last_ptid = thread->entry.id; | |
2471 | prepare_resume_reply (own_buf, last_ptid, &last_status); | |
2472 | return 1; | |
2473 | } | |
2474 | return 0; | |
2475 | } | |
ce1a5b52 | 2476 | |
64386c31 DJ |
2477 | /* Parse vCont packets. */ |
2478 | void | |
5b1c542e | 2479 | handle_v_cont (char *own_buf) |
64386c31 DJ |
2480 | { |
2481 | char *p, *q; | |
2482 | int n = 0, i = 0; | |
2bd7c093 | 2483 | struct thread_resume *resume_info; |
95954743 | 2484 | struct thread_resume default_action = {{0}}; |
64386c31 DJ |
2485 | |
2486 | /* Count the number of semicolons in the packet. There should be one | |
2487 | for every action. */ | |
2488 | p = &own_buf[5]; | |
2489 | while (p) | |
2490 | { | |
2491 | n++; | |
2492 | p++; | |
2493 | p = strchr (p, ';'); | |
2494 | } | |
2bd7c093 PA |
2495 | |
2496 | resume_info = malloc (n * sizeof (resume_info[0])); | |
aef93bd7 DE |
2497 | if (resume_info == NULL) |
2498 | goto err; | |
64386c31 | 2499 | |
64386c31 | 2500 | p = &own_buf[5]; |
64386c31 DJ |
2501 | while (*p) |
2502 | { | |
2503 | p++; | |
2504 | ||
c2d6af84 PA |
2505 | memset (&resume_info[i], 0, sizeof resume_info[i]); |
2506 | ||
64386c31 | 2507 | if (p[0] == 's' || p[0] == 'S') |
bd99dc85 | 2508 | resume_info[i].kind = resume_step; |
c2d6af84 PA |
2509 | else if (p[0] == 'r') |
2510 | resume_info[i].kind = resume_step; | |
64386c31 | 2511 | else if (p[0] == 'c' || p[0] == 'C') |
bd99dc85 PA |
2512 | resume_info[i].kind = resume_continue; |
2513 | else if (p[0] == 't') | |
2514 | resume_info[i].kind = resume_stop; | |
64386c31 DJ |
2515 | else |
2516 | goto err; | |
2517 | ||
2518 | if (p[0] == 'S' || p[0] == 'C') | |
2519 | { | |
2520 | int sig; | |
2521 | sig = strtol (p + 1, &q, 16); | |
2522 | if (p == q) | |
2523 | goto err; | |
2524 | p = q; | |
2525 | ||
2ea28649 | 2526 | if (!gdb_signal_to_host_p (sig)) |
64386c31 | 2527 | goto err; |
2ea28649 | 2528 | resume_info[i].sig = gdb_signal_to_host (sig); |
64386c31 | 2529 | } |
c2d6af84 PA |
2530 | else if (p[0] == 'r') |
2531 | { | |
6740dc9c | 2532 | ULONGEST addr; |
c2d6af84 | 2533 | |
6740dc9c PA |
2534 | p = unpack_varlen_hex (p + 1, &addr); |
2535 | resume_info[i].step_range_start = addr; | |
c2d6af84 | 2536 | |
6740dc9c PA |
2537 | if (*p != ',') |
2538 | goto err; | |
c2d6af84 | 2539 | |
6740dc9c PA |
2540 | p = unpack_varlen_hex (p + 1, &addr); |
2541 | resume_info[i].step_range_end = addr; | |
c2d6af84 | 2542 | } |
64386c31 DJ |
2543 | else |
2544 | { | |
64386c31 DJ |
2545 | p = p + 1; |
2546 | } | |
2547 | ||
2548 | if (p[0] == 0) | |
2549 | { | |
95954743 | 2550 | resume_info[i].thread = minus_one_ptid; |
64386c31 DJ |
2551 | default_action = resume_info[i]; |
2552 | ||
2553 | /* Note: we don't increment i here, we'll overwrite this entry | |
2554 | the next time through. */ | |
2555 | } | |
2556 | else if (p[0] == ':') | |
2557 | { | |
95954743 | 2558 | ptid_t ptid = read_ptid (p + 1, &q); |
a06660f7 | 2559 | |
64386c31 DJ |
2560 | if (p == q) |
2561 | goto err; | |
2562 | p = q; | |
2563 | if (p[0] != ';' && p[0] != 0) | |
2564 | goto err; | |
2565 | ||
95954743 | 2566 | resume_info[i].thread = ptid; |
a06660f7 | 2567 | |
64386c31 DJ |
2568 | i++; |
2569 | } | |
2570 | } | |
2571 | ||
2bd7c093 PA |
2572 | if (i < n) |
2573 | resume_info[i] = default_action; | |
64386c31 | 2574 | |
0bfdf32f | 2575 | set_desired_thread (0); |
64386c31 | 2576 | |
b7ea362b PA |
2577 | resume (resume_info, n); |
2578 | free (resume_info); | |
2579 | return; | |
2580 | ||
2581 | err: | |
2582 | write_enn (own_buf); | |
2583 | free (resume_info); | |
2584 | return; | |
2585 | } | |
2586 | ||
2587 | /* Resume target with ACTIONS, an array of NUM_ACTIONS elements. */ | |
2588 | ||
2589 | static void | |
2590 | resume (struct thread_resume *actions, size_t num_actions) | |
2591 | { | |
bd99dc85 | 2592 | if (!non_stop) |
b7ea362b PA |
2593 | { |
2594 | /* Check if among the threads that GDB wants actioned, there's | |
2595 | one with a pending status to report. If so, skip actually | |
2596 | resuming/stopping and report the pending event | |
2597 | immediately. */ | |
649ebbca DE |
2598 | struct visit_actioned_threads_data data; |
2599 | ||
2600 | data.actions = actions; | |
2601 | data.num_actions = num_actions; | |
2602 | data.callback = handle_pending_status; | |
2603 | if (find_inferior (&all_threads, visit_actioned_threads, &data) != NULL) | |
b7ea362b | 2604 | return; |
bd99dc85 | 2605 | |
b7ea362b PA |
2606 | enable_async_io (); |
2607 | } | |
64386c31 | 2608 | |
b7ea362b | 2609 | (*the_target->resume) (actions, num_actions); |
64386c31 | 2610 | |
bd99dc85 PA |
2611 | if (non_stop) |
2612 | write_ok (own_buf); | |
2613 | else | |
2614 | { | |
95954743 | 2615 | last_ptid = mywait (minus_one_ptid, &last_status, 0, 1); |
ce1a5b52 | 2616 | |
fa96cb38 PA |
2617 | if (last_status.kind == TARGET_WAITKIND_NO_RESUMED) |
2618 | { | |
2619 | /* No proper RSP support for this yet. At least return | |
2620 | error. */ | |
2621 | sprintf (own_buf, "E.No unwaited-for children left."); | |
2622 | disable_async_io (); | |
2623 | return; | |
2624 | } | |
2625 | ||
d20a8ad9 | 2626 | if (last_status.kind != TARGET_WAITKIND_EXITED |
fa96cb38 PA |
2627 | && last_status.kind != TARGET_WAITKIND_SIGNALLED |
2628 | && last_status.kind != TARGET_WAITKIND_NO_RESUMED) | |
0bfdf32f | 2629 | current_thread->last_status = last_status; |
d20a8ad9 | 2630 | |
ce1a5b52 PA |
2631 | /* From the client's perspective, all-stop mode always stops all |
2632 | threads implicitly (and the target backend has already done | |
2633 | so by now). Tag all threads as "want-stopped", so we don't | |
2634 | resume them implicitly without the client telling us to. */ | |
2635 | gdb_wants_all_threads_stopped (); | |
bd99dc85 PA |
2636 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
2637 | disable_async_io (); | |
6bd31874 JB |
2638 | |
2639 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
2640 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2641 | mourn_inferior (find_process_pid (ptid_get_pid (last_ptid))); | |
bd99dc85 | 2642 | } |
64386c31 DJ |
2643 | } |
2644 | ||
2d717e4f DJ |
2645 | /* Attach to a new program. Return 1 if successful, 0 if failure. */ |
2646 | int | |
5b1c542e | 2647 | handle_v_attach (char *own_buf) |
2d717e4f DJ |
2648 | { |
2649 | int pid; | |
2650 | ||
2651 | pid = strtol (own_buf + 8, NULL, 16); | |
5b1c542e | 2652 | if (pid != 0 && attach_inferior (pid) == 0) |
2d717e4f | 2653 | { |
aeba519e PA |
2654 | /* Don't report shared library events after attaching, even if |
2655 | some libraries are preloaded. GDB will always poll the | |
2656 | library list. Avoids the "stopped by shared library event" | |
2657 | notice on the GDB side. */ | |
2658 | dlls_changed = 0; | |
bd99dc85 PA |
2659 | |
2660 | if (non_stop) | |
2661 | { | |
2662 | /* In non-stop, we don't send a resume reply. Stop events | |
2663 | will follow up using the normal notification | |
2664 | mechanism. */ | |
2665 | write_ok (own_buf); | |
2666 | } | |
2667 | else | |
2668 | prepare_resume_reply (own_buf, last_ptid, &last_status); | |
2669 | ||
2d717e4f DJ |
2670 | return 1; |
2671 | } | |
2672 | else | |
2673 | { | |
2674 | write_enn (own_buf); | |
2675 | return 0; | |
2676 | } | |
2677 | } | |
2678 | ||
2679 | /* Run a new program. Return 1 if successful, 0 if failure. */ | |
2680 | static int | |
5b1c542e | 2681 | handle_v_run (char *own_buf) |
2d717e4f | 2682 | { |
aef93bd7 | 2683 | char *p, *next_p, **new_argv; |
2d717e4f DJ |
2684 | int i, new_argc; |
2685 | ||
2686 | new_argc = 0; | |
2687 | for (p = own_buf + strlen ("vRun;"); p && *p; p = strchr (p, ';')) | |
2688 | { | |
2689 | p++; | |
2690 | new_argc++; | |
2691 | } | |
2692 | ||
aef93bd7 DE |
2693 | new_argv = calloc (new_argc + 2, sizeof (char *)); |
2694 | if (new_argv == NULL) | |
2695 | { | |
2696 | write_enn (own_buf); | |
2697 | return 0; | |
2698 | } | |
2699 | ||
2d717e4f DJ |
2700 | i = 0; |
2701 | for (p = own_buf + strlen ("vRun;"); *p; p = next_p) | |
2702 | { | |
2703 | next_p = strchr (p, ';'); | |
2704 | if (next_p == NULL) | |
2705 | next_p = p + strlen (p); | |
2706 | ||
2707 | if (i == 0 && p == next_p) | |
2708 | new_argv[i] = NULL; | |
2709 | else | |
2710 | { | |
aef93bd7 | 2711 | /* FIXME: Fail request if out of memory instead of dying. */ |
bca929d3 | 2712 | new_argv[i] = xmalloc (1 + (next_p - p) / 2); |
ff0e980e | 2713 | hex2bin (p, (gdb_byte *) new_argv[i], (next_p - p) / 2); |
2d717e4f DJ |
2714 | new_argv[i][(next_p - p) / 2] = '\0'; |
2715 | } | |
2716 | ||
2717 | if (*next_p) | |
2718 | next_p++; | |
2719 | i++; | |
2720 | } | |
2721 | new_argv[i] = NULL; | |
2722 | ||
2723 | if (new_argv[0] == NULL) | |
2724 | { | |
f142445f DJ |
2725 | /* GDB didn't specify a program to run. Use the program from the |
2726 | last run with the new argument list. */ | |
9b710a42 | 2727 | |
2d717e4f DJ |
2728 | if (program_argv == NULL) |
2729 | { | |
2730 | write_enn (own_buf); | |
b2c04452 | 2731 | freeargv (new_argv); |
2d717e4f DJ |
2732 | return 0; |
2733 | } | |
2734 | ||
aef93bd7 DE |
2735 | new_argv[0] = strdup (program_argv[0]); |
2736 | if (new_argv[0] == NULL) | |
2737 | { | |
aef93bd7 | 2738 | write_enn (own_buf); |
b2c04452 | 2739 | freeargv (new_argv); |
aef93bd7 | 2740 | return 0; |
1b3f6016 | 2741 | } |
2d717e4f | 2742 | } |
f142445f | 2743 | |
aef93bd7 DE |
2744 | /* Free the old argv and install the new one. */ |
2745 | freeargv (program_argv); | |
f142445f | 2746 | program_argv = new_argv; |
2d717e4f | 2747 | |
5b1c542e PA |
2748 | start_inferior (program_argv); |
2749 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
2d717e4f | 2750 | { |
5b1c542e | 2751 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
bd99dc85 PA |
2752 | |
2753 | /* In non-stop, sending a resume reply doesn't set the general | |
2754 | thread, but GDB assumes a vRun sets it (this is so GDB can | |
2755 | query which is the main thread of the new inferior. */ | |
2756 | if (non_stop) | |
2757 | general_thread = last_ptid; | |
2758 | ||
2d717e4f DJ |
2759 | return 1; |
2760 | } | |
2761 | else | |
2762 | { | |
2763 | write_enn (own_buf); | |
2764 | return 0; | |
2765 | } | |
2766 | } | |
2767 | ||
95954743 PA |
2768 | /* Kill process. Return 1 if successful, 0 if failure. */ |
2769 | int | |
2770 | handle_v_kill (char *own_buf) | |
2771 | { | |
2772 | int pid; | |
2773 | char *p = &own_buf[6]; | |
0f54c268 PM |
2774 | if (multi_process) |
2775 | pid = strtol (p, NULL, 16); | |
2776 | else | |
2777 | pid = signal_pid; | |
95954743 PA |
2778 | if (pid != 0 && kill_inferior (pid) == 0) |
2779 | { | |
2780 | last_status.kind = TARGET_WAITKIND_SIGNALLED; | |
a493e3e2 | 2781 | last_status.value.sig = GDB_SIGNAL_KILL; |
95954743 PA |
2782 | last_ptid = pid_to_ptid (pid); |
2783 | discard_queued_stop_replies (pid); | |
2784 | write_ok (own_buf); | |
2785 | return 1; | |
2786 | } | |
2787 | else | |
2788 | { | |
2789 | write_enn (own_buf); | |
2790 | return 0; | |
2791 | } | |
2792 | } | |
2793 | ||
64386c31 DJ |
2794 | /* Handle all of the extended 'v' packets. */ |
2795 | void | |
5b1c542e | 2796 | handle_v_requests (char *own_buf, int packet_len, int *new_packet_len) |
64386c31 | 2797 | { |
db42f210 | 2798 | if (!disable_packet_vCont) |
64386c31 | 2799 | { |
61012eef | 2800 | if (startswith (own_buf, "vCont;")) |
db42f210 PA |
2801 | { |
2802 | require_running (own_buf); | |
5b1c542e | 2803 | handle_v_cont (own_buf); |
db42f210 PA |
2804 | return; |
2805 | } | |
64386c31 | 2806 | |
61012eef | 2807 | if (startswith (own_buf, "vCont?")) |
db42f210 | 2808 | { |
bd99dc85 | 2809 | strcpy (own_buf, "vCont;c;C;s;S;t"); |
c2d6af84 PA |
2810 | if (target_supports_range_stepping ()) |
2811 | { | |
2812 | own_buf = own_buf + strlen (own_buf); | |
2813 | strcpy (own_buf, ";r"); | |
2814 | } | |
db42f210 PA |
2815 | return; |
2816 | } | |
64386c31 DJ |
2817 | } |
2818 | ||
61012eef | 2819 | if (startswith (own_buf, "vFile:") |
a6b151f1 DJ |
2820 | && handle_vFile (own_buf, packet_len, new_packet_len)) |
2821 | return; | |
2822 | ||
61012eef | 2823 | if (startswith (own_buf, "vAttach;")) |
2d717e4f | 2824 | { |
901f9912 | 2825 | if ((!extended_protocol || !multi_process) && target_running ()) |
2d717e4f | 2826 | { |
fd96d250 PA |
2827 | fprintf (stderr, "Already debugging a process\n"); |
2828 | write_enn (own_buf); | |
2829 | return; | |
2d717e4f | 2830 | } |
5b1c542e | 2831 | handle_v_attach (own_buf); |
2d717e4f DJ |
2832 | return; |
2833 | } | |
2834 | ||
61012eef | 2835 | if (startswith (own_buf, "vRun;")) |
2d717e4f | 2836 | { |
901f9912 | 2837 | if ((!extended_protocol || !multi_process) && target_running ()) |
2d717e4f | 2838 | { |
fd96d250 PA |
2839 | fprintf (stderr, "Already debugging a process\n"); |
2840 | write_enn (own_buf); | |
2841 | return; | |
2d717e4f | 2842 | } |
5b1c542e | 2843 | handle_v_run (own_buf); |
2d717e4f DJ |
2844 | return; |
2845 | } | |
2846 | ||
61012eef | 2847 | if (startswith (own_buf, "vKill;")) |
95954743 PA |
2848 | { |
2849 | if (!target_running ()) | |
2850 | { | |
2851 | fprintf (stderr, "No process to kill\n"); | |
2852 | write_enn (own_buf); | |
2853 | return; | |
2854 | } | |
2855 | handle_v_kill (own_buf); | |
2856 | return; | |
2857 | } | |
2858 | ||
14a00470 YQ |
2859 | if (handle_notif_ack (own_buf, packet_len)) |
2860 | return; | |
bd99dc85 | 2861 | |
64386c31 DJ |
2862 | /* Otherwise we didn't know what packet it was. Say we didn't |
2863 | understand it. */ | |
2864 | own_buf[0] = 0; | |
2865 | return; | |
2866 | } | |
2867 | ||
0bfdf32f | 2868 | /* Resume thread and wait for another event. In non-stop mode, |
bd99dc85 PA |
2869 | don't really wait here, but return immediatelly to the event |
2870 | loop. */ | |
1fd7cdc2 | 2871 | static void |
5b1c542e | 2872 | myresume (char *own_buf, int step, int sig) |
64386c31 DJ |
2873 | { |
2874 | struct thread_resume resume_info[2]; | |
2875 | int n = 0; | |
2bd7c093 | 2876 | int valid_cont_thread; |
a20d5e98 | 2877 | |
0bfdf32f | 2878 | set_desired_thread (0); |
64386c31 | 2879 | |
95954743 PA |
2880 | valid_cont_thread = (!ptid_equal (cont_thread, null_ptid) |
2881 | && !ptid_equal (cont_thread, minus_one_ptid)); | |
2bd7c093 PA |
2882 | |
2883 | if (step || sig || valid_cont_thread) | |
64386c31 | 2884 | { |
fbd5db48 | 2885 | resume_info[0].thread = current_ptid; |
bd99dc85 PA |
2886 | if (step) |
2887 | resume_info[0].kind = resume_step; | |
2888 | else | |
2889 | resume_info[0].kind = resume_continue; | |
64386c31 | 2890 | resume_info[0].sig = sig; |
64386c31 DJ |
2891 | n++; |
2892 | } | |
2bd7c093 PA |
2893 | |
2894 | if (!valid_cont_thread) | |
2895 | { | |
95954743 | 2896 | resume_info[n].thread = minus_one_ptid; |
bd99dc85 | 2897 | resume_info[n].kind = resume_continue; |
2bd7c093 PA |
2898 | resume_info[n].sig = 0; |
2899 | n++; | |
2900 | } | |
64386c31 | 2901 | |
b7ea362b | 2902 | resume (resume_info, n); |
bd99dc85 PA |
2903 | } |
2904 | ||
2905 | /* Callback for for_each_inferior. Make a new stop reply for each | |
2906 | stopped thread. */ | |
2907 | ||
95954743 PA |
2908 | static int |
2909 | queue_stop_reply_callback (struct inferior_list_entry *entry, void *arg) | |
bd99dc85 | 2910 | { |
8336d594 | 2911 | struct thread_info *thread = (struct thread_info *) entry; |
bd99dc85 | 2912 | |
8336d594 PA |
2913 | /* For now, assume targets that don't have this callback also don't |
2914 | manage the thread's last_status field. */ | |
2915 | if (the_target->thread_stopped == NULL) | |
95954743 | 2916 | { |
14a00470 YQ |
2917 | struct vstop_notif *new_notif = xmalloc (sizeof (*new_notif)); |
2918 | ||
2919 | new_notif->ptid = entry->id; | |
2920 | new_notif->status = thread->last_status; | |
8336d594 PA |
2921 | /* Pass the last stop reply back to GDB, but don't notify |
2922 | yet. */ | |
14a00470 YQ |
2923 | notif_event_enque (¬if_stop, |
2924 | (struct notif_event *) new_notif); | |
8336d594 PA |
2925 | } |
2926 | else | |
2927 | { | |
2928 | if (thread_stopped (thread)) | |
2929 | { | |
2930 | if (debug_threads) | |
3360c0bf LM |
2931 | { |
2932 | char *status_string | |
2933 | = target_waitstatus_to_string (&thread->last_status); | |
2934 | ||
87ce2a04 DE |
2935 | debug_printf ("Reporting thread %s as already stopped with %s\n", |
2936 | target_pid_to_str (entry->id), | |
2937 | status_string); | |
3360c0bf LM |
2938 | |
2939 | xfree (status_string); | |
2940 | } | |
8336d594 | 2941 | |
d20a8ad9 PA |
2942 | gdb_assert (thread->last_status.kind != TARGET_WAITKIND_IGNORE); |
2943 | ||
8336d594 PA |
2944 | /* Pass the last stop reply back to GDB, but don't notify |
2945 | yet. */ | |
2946 | queue_stop_reply (entry->id, &thread->last_status); | |
2947 | } | |
95954743 PA |
2948 | } |
2949 | ||
2950 | return 0; | |
64386c31 DJ |
2951 | } |
2952 | ||
ce1a5b52 PA |
2953 | /* Set this inferior threads's state as "want-stopped". We won't |
2954 | resume this thread until the client gives us another action for | |
2955 | it. */ | |
8336d594 PA |
2956 | |
2957 | static void | |
2958 | gdb_wants_thread_stopped (struct inferior_list_entry *entry) | |
2959 | { | |
2960 | struct thread_info *thread = (struct thread_info *) entry; | |
2961 | ||
2962 | thread->last_resume_kind = resume_stop; | |
2963 | ||
2964 | if (thread->last_status.kind == TARGET_WAITKIND_IGNORE) | |
2965 | { | |
ce1a5b52 PA |
2966 | /* Most threads are stopped implicitly (all-stop); tag that with |
2967 | signal 0. */ | |
8336d594 | 2968 | thread->last_status.kind = TARGET_WAITKIND_STOPPED; |
a493e3e2 | 2969 | thread->last_status.value.sig = GDB_SIGNAL_0; |
8336d594 PA |
2970 | } |
2971 | } | |
2972 | ||
2973 | /* Set all threads' states as "want-stopped". */ | |
2974 | ||
2975 | static void | |
2976 | gdb_wants_all_threads_stopped (void) | |
2977 | { | |
2978 | for_each_inferior (&all_threads, gdb_wants_thread_stopped); | |
2979 | } | |
2980 | ||
2981 | /* Clear the gdb_detached flag of every process. */ | |
2982 | ||
2983 | static void | |
2984 | gdb_reattached_process (struct inferior_list_entry *entry) | |
2985 | { | |
2986 | struct process_info *process = (struct process_info *) entry; | |
2987 | ||
2988 | process->gdb_detached = 0; | |
2989 | } | |
2990 | ||
b7ea362b PA |
2991 | /* Callback for for_each_inferior. Clear the thread's pending status |
2992 | flag. */ | |
2993 | ||
2994 | static void | |
2995 | clear_pending_status_callback (struct inferior_list_entry *entry) | |
2996 | { | |
2997 | struct thread_info *thread = (struct thread_info *) entry; | |
2998 | ||
2999 | thread->status_pending_p = 0; | |
3000 | } | |
3001 | ||
3002 | /* Callback for for_each_inferior. If the thread is stopped with an | |
3003 | interesting event, mark it as having a pending event. */ | |
3004 | ||
3005 | static void | |
3006 | set_pending_status_callback (struct inferior_list_entry *entry) | |
3007 | { | |
3008 | struct thread_info *thread = (struct thread_info *) entry; | |
3009 | ||
3010 | if (thread->last_status.kind != TARGET_WAITKIND_STOPPED | |
3011 | || (thread->last_status.value.sig != GDB_SIGNAL_0 | |
3012 | /* A breakpoint, watchpoint or finished step from a previous | |
3013 | GDB run isn't considered interesting for a new GDB run. | |
3014 | If we left those pending, the new GDB could consider them | |
3015 | random SIGTRAPs. This leaves out real async traps. We'd | |
3016 | have to peek into the (target-specific) siginfo to | |
3017 | distinguish those. */ | |
3018 | && thread->last_status.value.sig != GDB_SIGNAL_TRAP)) | |
3019 | thread->status_pending_p = 1; | |
3020 | } | |
3021 | ||
3022 | /* Callback for find_inferior. Return true if ENTRY (a thread) has a | |
3023 | pending status to report to GDB. */ | |
3024 | ||
3025 | static int | |
3026 | find_status_pending_thread_callback (struct inferior_list_entry *entry, void *data) | |
3027 | { | |
3028 | struct thread_info *thread = (struct thread_info *) entry; | |
3029 | ||
3030 | return thread->status_pending_p; | |
3031 | } | |
3032 | ||
5b1c542e PA |
3033 | /* Status handler for the '?' packet. */ |
3034 | ||
3035 | static void | |
3036 | handle_status (char *own_buf) | |
3037 | { | |
8336d594 PA |
3038 | /* GDB is connected, don't forward events to the target anymore. */ |
3039 | for_each_inferior (&all_processes, gdb_reattached_process); | |
bd99dc85 PA |
3040 | |
3041 | /* In non-stop mode, we must send a stop reply for each stopped | |
3042 | thread. In all-stop mode, just send one for the first stopped | |
3043 | thread we find. */ | |
3044 | ||
3045 | if (non_stop) | |
3046 | { | |
8336d594 | 3047 | find_inferior (&all_threads, queue_stop_reply_callback, NULL); |
bd99dc85 PA |
3048 | |
3049 | /* The first is sent immediatly. OK is sent if there is no | |
3050 | stopped thread, which is the same handling of the vStopped | |
3051 | packet (by design). */ | |
14a00470 | 3052 | notif_write_event (¬if_stop, own_buf); |
bd99dc85 | 3053 | } |
5b1c542e | 3054 | else |
bd99dc85 | 3055 | { |
b7ea362b PA |
3056 | struct inferior_list_entry *thread = NULL; |
3057 | ||
7984d532 | 3058 | pause_all (0); |
fa593d66 | 3059 | stabilize_threads (); |
8336d594 PA |
3060 | gdb_wants_all_threads_stopped (); |
3061 | ||
b7ea362b PA |
3062 | /* We can only report one status, but we might be coming out of |
3063 | non-stop -- if more than one thread is stopped with | |
3064 | interesting events, leave events for the threads we're not | |
3065 | reporting now pending. They'll be reported the next time the | |
3066 | threads are resumed. Start by marking all interesting events | |
3067 | as pending. */ | |
3068 | for_each_inferior (&all_threads, set_pending_status_callback); | |
3069 | ||
3070 | /* Prefer the last thread that reported an event to GDB (even if | |
3071 | that was a GDB_SIGNAL_TRAP). */ | |
3072 | if (last_status.kind != TARGET_WAITKIND_IGNORE | |
3073 | && last_status.kind != TARGET_WAITKIND_EXITED | |
3074 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
3075 | thread = find_inferior_id (&all_threads, last_ptid); | |
3076 | ||
3077 | /* If the last event thread is not found for some reason, look | |
3078 | for some other thread that might have an event to report. */ | |
3079 | if (thread == NULL) | |
3080 | thread = find_inferior (&all_threads, | |
3081 | find_status_pending_thread_callback, NULL); | |
3082 | ||
3083 | /* If we're still out of luck, simply pick the first thread in | |
3084 | the thread list. */ | |
3085 | if (thread == NULL) | |
649ebbca | 3086 | thread = get_first_inferior (&all_threads); |
b7ea362b PA |
3087 | |
3088 | if (thread != NULL) | |
8336d594 | 3089 | { |
b7ea362b PA |
3090 | struct thread_info *tp = (struct thread_info *) thread; |
3091 | ||
3092 | /* We're reporting this event, so it's no longer | |
3093 | pending. */ | |
3094 | tp->status_pending_p = 0; | |
3095 | ||
3096 | /* GDB assumes the current thread is the thread we're | |
3097 | reporting the status for. */ | |
3098 | general_thread = thread->id; | |
0bfdf32f | 3099 | set_desired_thread (1); |
8336d594 | 3100 | |
b7ea362b PA |
3101 | gdb_assert (tp->last_status.kind != TARGET_WAITKIND_IGNORE); |
3102 | prepare_resume_reply (own_buf, tp->entry.id, &tp->last_status); | |
8336d594 | 3103 | } |
bd99dc85 PA |
3104 | else |
3105 | strcpy (own_buf, "W00"); | |
3106 | } | |
5b1c542e PA |
3107 | } |
3108 | ||
dd24457d DJ |
3109 | static void |
3110 | gdbserver_version (void) | |
3111 | { | |
c16158bc | 3112 | printf ("GNU gdbserver %s%s\n" |
76f2b779 | 3113 | "Copyright (C) 2015 Free Software Foundation, Inc.\n" |
493e2a69 MS |
3114 | "gdbserver is free software, covered by the " |
3115 | "GNU General Public License.\n" | |
dd24457d | 3116 | "This gdbserver was configured as \"%s\"\n", |
c16158bc | 3117 | PKGVERSION, version, host_name); |
dd24457d DJ |
3118 | } |
3119 | ||
0bc68c49 | 3120 | static void |
c16158bc | 3121 | gdbserver_usage (FILE *stream) |
0bc68c49 | 3122 | { |
c16158bc JM |
3123 | fprintf (stream, "Usage:\tgdbserver [OPTIONS] COMM PROG [ARGS ...]\n" |
3124 | "\tgdbserver [OPTIONS] --attach COMM PID\n" | |
3125 | "\tgdbserver [OPTIONS] --multi COMM\n" | |
3126 | "\n" | |
41f98f02 PA |
3127 | "COMM may either be a tty device (for serial debugging),\n" |
3128 | "HOST:PORT to listen for a TCP connection, or '-' or 'stdio' to use \n" | |
3129 | "stdin/stdout of gdbserver.\n" | |
3130 | "PROG is the executable program. ARGS are arguments passed to inferior.\n" | |
3131 | "PID is the process ID to attach to, when --attach is specified.\n" | |
3132 | "\n" | |
3133 | "Operating modes:\n" | |
3134 | "\n" | |
3135 | " --attach Attach to running process PID.\n" | |
3136 | " --multi Start server without a specific program, and\n" | |
3137 | " only quit when explicitly commanded.\n" | |
3138 | " --once Exit after the first connection has closed.\n" | |
3139 | " --help Print this message and then exit.\n" | |
3140 | " --version Display version information and exit.\n" | |
3141 | "\n" | |
3142 | "Other options:\n" | |
3143 | "\n" | |
3144 | " --wrapper WRAPPER -- Run WRAPPER to start new programs.\n" | |
3145 | " --disable-randomization\n" | |
3146 | " Run PROG with address space randomization disabled.\n" | |
3147 | " --no-disable-randomization\n" | |
3148 | " Don't disable address space randomization when\n" | |
3149 | " starting PROG.\n" | |
3150 | "\n" | |
3151 | "Debug options:\n" | |
c16158bc | 3152 | "\n" |
62709adf | 3153 | " --debug Enable general debugging output.\n" |
87ce2a04 DE |
3154 | " --debug-format=opt1[,opt2,...]\n" |
3155 | " Specify extra content in debugging output.\n" | |
3156 | " Options:\n" | |
3157 | " all\n" | |
3158 | " none\n" | |
87ce2a04 | 3159 | " timestamp\n" |
62709adf | 3160 | " --remote-debug Enable remote protocol debugging output.\n" |
41f98f02 PA |
3161 | " --disable-packet=opt1[,opt2,...]\n" |
3162 | " Disable support for RSP packets or features.\n" | |
3163 | " Options:\n" | |
3164 | " vCont, Tthread, qC, qfThreadInfo and \n" | |
3165 | " threads (disable all threading packets).\n" | |
3166 | "\n" | |
3167 | "For more information, consult the GDB manual (available as on-line \n" | |
3168 | "info or a printed manual).\n"); | |
c16158bc JM |
3169 | if (REPORT_BUGS_TO[0] && stream == stdout) |
3170 | fprintf (stream, "Report bugs to \"%s\".\n", REPORT_BUGS_TO); | |
0bc68c49 DJ |
3171 | } |
3172 | ||
db42f210 PA |
3173 | static void |
3174 | gdbserver_show_disableable (FILE *stream) | |
3175 | { | |
3176 | fprintf (stream, "Disableable packets:\n" | |
3177 | " vCont \tAll vCont packets\n" | |
3178 | " qC \tQuerying the current thread\n" | |
3179 | " qfThreadInfo\tThread listing\n" | |
493e2a69 MS |
3180 | " Tthread \tPassing the thread specifier in the " |
3181 | "T stop reply packet\n" | |
db42f210 PA |
3182 | " threads \tAll of the above\n"); |
3183 | } | |
3184 | ||
3185 | ||
2d717e4f DJ |
3186 | #undef require_running |
3187 | #define require_running(BUF) \ | |
3188 | if (!target_running ()) \ | |
3189 | { \ | |
3190 | write_enn (BUF); \ | |
3191 | break; \ | |
3192 | } | |
3193 | ||
95954743 PA |
3194 | static int |
3195 | first_thread_of (struct inferior_list_entry *entry, void *args) | |
3196 | { | |
3197 | int pid = * (int *) args; | |
3198 | ||
3199 | if (ptid_get_pid (entry->id) == pid) | |
3200 | return 1; | |
3201 | ||
3202 | return 0; | |
3203 | } | |
3204 | ||
3205 | static void | |
3206 | kill_inferior_callback (struct inferior_list_entry *entry) | |
3207 | { | |
3208 | struct process_info *process = (struct process_info *) entry; | |
80894984 | 3209 | int pid = ptid_get_pid (process->entry.id); |
95954743 PA |
3210 | |
3211 | kill_inferior (pid); | |
3212 | discard_queued_stop_replies (pid); | |
3213 | } | |
3214 | ||
9f767825 DE |
3215 | /* Callback for for_each_inferior to detach or kill the inferior, |
3216 | depending on whether we attached to it or not. | |
3217 | We inform the user whether we're detaching or killing the process | |
3218 | as this is only called when gdbserver is about to exit. */ | |
3219 | ||
95954743 PA |
3220 | static void |
3221 | detach_or_kill_inferior_callback (struct inferior_list_entry *entry) | |
3222 | { | |
3223 | struct process_info *process = (struct process_info *) entry; | |
80894984 | 3224 | int pid = ptid_get_pid (process->entry.id); |
95954743 PA |
3225 | |
3226 | if (process->attached) | |
3227 | detach_inferior (pid); | |
3228 | else | |
3229 | kill_inferior (pid); | |
3230 | ||
3231 | discard_queued_stop_replies (pid); | |
3232 | } | |
3233 | ||
9f767825 DE |
3234 | /* for_each_inferior callback for detach_or_kill_for_exit to print |
3235 | the pids of started inferiors. */ | |
3236 | ||
3237 | static void | |
3238 | print_started_pid (struct inferior_list_entry *entry) | |
3239 | { | |
3240 | struct process_info *process = (struct process_info *) entry; | |
3241 | ||
3242 | if (! process->attached) | |
3243 | { | |
80894984 | 3244 | int pid = ptid_get_pid (process->entry.id); |
9f767825 DE |
3245 | fprintf (stderr, " %d", pid); |
3246 | } | |
3247 | } | |
3248 | ||
3249 | /* for_each_inferior callback for detach_or_kill_for_exit to print | |
3250 | the pids of attached inferiors. */ | |
3251 | ||
3252 | static void | |
3253 | print_attached_pid (struct inferior_list_entry *entry) | |
3254 | { | |
3255 | struct process_info *process = (struct process_info *) entry; | |
3256 | ||
3257 | if (process->attached) | |
3258 | { | |
80894984 | 3259 | int pid = ptid_get_pid (process->entry.id); |
9f767825 DE |
3260 | fprintf (stderr, " %d", pid); |
3261 | } | |
3262 | } | |
3263 | ||
3264 | /* Call this when exiting gdbserver with possible inferiors that need | |
3265 | to be killed or detached from. */ | |
3266 | ||
3267 | static void | |
3268 | detach_or_kill_for_exit (void) | |
3269 | { | |
3270 | /* First print a list of the inferiors we will be killing/detaching. | |
3271 | This is to assist the user, for example, in case the inferior unexpectedly | |
3272 | dies after we exit: did we screw up or did the inferior exit on its own? | |
3273 | Having this info will save some head-scratching. */ | |
3274 | ||
3275 | if (have_started_inferiors_p ()) | |
3276 | { | |
3277 | fprintf (stderr, "Killing process(es):"); | |
3278 | for_each_inferior (&all_processes, print_started_pid); | |
3279 | fprintf (stderr, "\n"); | |
3280 | } | |
3281 | if (have_attached_inferiors_p ()) | |
3282 | { | |
3283 | fprintf (stderr, "Detaching process(es):"); | |
3284 | for_each_inferior (&all_processes, print_attached_pid); | |
3285 | fprintf (stderr, "\n"); | |
3286 | } | |
3287 | ||
3288 | /* Now we can kill or detach the inferiors. */ | |
3289 | ||
3290 | for_each_inferior (&all_processes, detach_or_kill_inferior_callback); | |
3291 | } | |
3292 | ||
860789c7 GB |
3293 | /* Value that will be passed to exit(3) when gdbserver exits. */ |
3294 | static int exit_code; | |
3295 | ||
3296 | /* Cleanup version of detach_or_kill_for_exit. */ | |
3297 | ||
3298 | static void | |
3299 | detach_or_kill_for_exit_cleanup (void *ignore) | |
3300 | { | |
860789c7 | 3301 | |
492d29ea | 3302 | TRY |
860789c7 GB |
3303 | { |
3304 | detach_or_kill_for_exit (); | |
3305 | } | |
3306 | ||
492d29ea | 3307 | CATCH (exception, RETURN_MASK_ALL) |
860789c7 GB |
3308 | { |
3309 | fflush (stdout); | |
3310 | fprintf (stderr, "Detach or kill failed: %s\n", exception.message); | |
3311 | exit_code = 1; | |
3312 | } | |
492d29ea | 3313 | END_CATCH |
860789c7 GB |
3314 | } |
3315 | ||
3316 | /* Main function. This is called by the real "main" function, | |
3317 | wrapped in a TRY_CATCH that handles any uncaught exceptions. */ | |
3318 | ||
3319 | static void ATTRIBUTE_NORETURN | |
3320 | captured_main (int argc, char *argv[]) | |
c906108c | 3321 | { |
0729219d DJ |
3322 | int bad_attach; |
3323 | int pid; | |
2d717e4f DJ |
3324 | char *arg_end, *port; |
3325 | char **next_arg = &argv[1]; | |
89dc0afd JK |
3326 | volatile int multi_mode = 0; |
3327 | volatile int attach = 0; | |
2d717e4f | 3328 | int was_running; |
c906108c | 3329 | |
2d717e4f | 3330 | while (*next_arg != NULL && **next_arg == '-') |
dd24457d | 3331 | { |
2d717e4f DJ |
3332 | if (strcmp (*next_arg, "--version") == 0) |
3333 | { | |
3334 | gdbserver_version (); | |
3335 | exit (0); | |
3336 | } | |
3337 | else if (strcmp (*next_arg, "--help") == 0) | |
3338 | { | |
c16158bc | 3339 | gdbserver_usage (stdout); |
2d717e4f DJ |
3340 | exit (0); |
3341 | } | |
3342 | else if (strcmp (*next_arg, "--attach") == 0) | |
3343 | attach = 1; | |
3344 | else if (strcmp (*next_arg, "--multi") == 0) | |
3345 | multi_mode = 1; | |
ccd213ac DJ |
3346 | else if (strcmp (*next_arg, "--wrapper") == 0) |
3347 | { | |
3348 | next_arg++; | |
3349 | ||
3350 | wrapper_argv = next_arg; | |
3351 | while (*next_arg != NULL && strcmp (*next_arg, "--") != 0) | |
3352 | next_arg++; | |
3353 | ||
3354 | if (next_arg == wrapper_argv || *next_arg == NULL) | |
3355 | { | |
c16158bc | 3356 | gdbserver_usage (stderr); |
ccd213ac DJ |
3357 | exit (1); |
3358 | } | |
3359 | ||
3360 | /* Consume the "--". */ | |
3361 | *next_arg = NULL; | |
3362 | } | |
2d717e4f DJ |
3363 | else if (strcmp (*next_arg, "--debug") == 0) |
3364 | debug_threads = 1; | |
61012eef | 3365 | else if (startswith (*next_arg, "--debug-format=")) |
87ce2a04 DE |
3366 | { |
3367 | char *error_msg | |
3368 | = parse_debug_format_options ((*next_arg) | |
3369 | + sizeof ("--debug-format=") - 1, 0); | |
3370 | ||
3371 | if (error_msg != NULL) | |
3372 | { | |
3373 | fprintf (stderr, "%s", error_msg); | |
3374 | exit (1); | |
3375 | } | |
3376 | } | |
62709adf PA |
3377 | else if (strcmp (*next_arg, "--remote-debug") == 0) |
3378 | remote_debug = 1; | |
db42f210 PA |
3379 | else if (strcmp (*next_arg, "--disable-packet") == 0) |
3380 | { | |
3381 | gdbserver_show_disableable (stdout); | |
3382 | exit (0); | |
3383 | } | |
61012eef | 3384 | else if (startswith (*next_arg, "--disable-packet=")) |
db42f210 PA |
3385 | { |
3386 | char *packets, *tok; | |
3387 | ||
3388 | packets = *next_arg += sizeof ("--disable-packet=") - 1; | |
3389 | for (tok = strtok (packets, ","); | |
3390 | tok != NULL; | |
3391 | tok = strtok (NULL, ",")) | |
3392 | { | |
3393 | if (strcmp ("vCont", tok) == 0) | |
3394 | disable_packet_vCont = 1; | |
3395 | else if (strcmp ("Tthread", tok) == 0) | |
3396 | disable_packet_Tthread = 1; | |
3397 | else if (strcmp ("qC", tok) == 0) | |
3398 | disable_packet_qC = 1; | |
3399 | else if (strcmp ("qfThreadInfo", tok) == 0) | |
3400 | disable_packet_qfThreadInfo = 1; | |
3401 | else if (strcmp ("threads", tok) == 0) | |
3402 | { | |
3403 | disable_packet_vCont = 1; | |
3404 | disable_packet_Tthread = 1; | |
3405 | disable_packet_qC = 1; | |
3406 | disable_packet_qfThreadInfo = 1; | |
3407 | } | |
3408 | else | |
3409 | { | |
3410 | fprintf (stderr, "Don't know how to disable \"%s\".\n\n", | |
3411 | tok); | |
3412 | gdbserver_show_disableable (stderr); | |
3413 | exit (1); | |
3414 | } | |
3415 | } | |
3416 | } | |
e0f9f062 DE |
3417 | else if (strcmp (*next_arg, "-") == 0) |
3418 | { | |
3419 | /* "-" specifies a stdio connection and is a form of port | |
3420 | specification. */ | |
3421 | *next_arg = STDIO_CONNECTION_NAME; | |
3422 | break; | |
3423 | } | |
03583c20 UW |
3424 | else if (strcmp (*next_arg, "--disable-randomization") == 0) |
3425 | disable_randomization = 1; | |
3426 | else if (strcmp (*next_arg, "--no-disable-randomization") == 0) | |
3427 | disable_randomization = 0; | |
03f2bd59 JK |
3428 | else if (strcmp (*next_arg, "--once") == 0) |
3429 | run_once = 1; | |
2d717e4f DJ |
3430 | else |
3431 | { | |
3432 | fprintf (stderr, "Unknown argument: %s\n", *next_arg); | |
3433 | exit (1); | |
3434 | } | |
dd24457d | 3435 | |
2d717e4f DJ |
3436 | next_arg++; |
3437 | continue; | |
dd24457d DJ |
3438 | } |
3439 | ||
2d717e4f DJ |
3440 | port = *next_arg; |
3441 | next_arg++; | |
3442 | if (port == NULL || (!attach && !multi_mode && *next_arg == NULL)) | |
3443 | { | |
c16158bc | 3444 | gdbserver_usage (stderr); |
2d717e4f DJ |
3445 | exit (1); |
3446 | } | |
3447 | ||
602e3198 JK |
3448 | /* Remember stdio descriptors. LISTEN_DESC must not be listed, it will be |
3449 | opened by remote_prepare. */ | |
3450 | notice_open_fds (); | |
3451 | ||
e0f9f062 DE |
3452 | /* We need to know whether the remote connection is stdio before |
3453 | starting the inferior. Inferiors created in this scenario have | |
3454 | stdin,stdout redirected. So do this here before we call | |
3455 | start_inferior. */ | |
3456 | remote_prepare (port); | |
3457 | ||
0729219d DJ |
3458 | bad_attach = 0; |
3459 | pid = 0; | |
2d717e4f DJ |
3460 | |
3461 | /* --attach used to come after PORT, so allow it there for | |
3462 | compatibility. */ | |
3463 | if (*next_arg != NULL && strcmp (*next_arg, "--attach") == 0) | |
45b7b345 | 3464 | { |
2d717e4f DJ |
3465 | attach = 1; |
3466 | next_arg++; | |
45b7b345 DJ |
3467 | } |
3468 | ||
2d717e4f DJ |
3469 | if (attach |
3470 | && (*next_arg == NULL | |
3471 | || (*next_arg)[0] == '\0' | |
3472 | || (pid = strtoul (*next_arg, &arg_end, 0)) == 0 | |
3473 | || *arg_end != '\0' | |
3474 | || next_arg[1] != NULL)) | |
3475 | bad_attach = 1; | |
3476 | ||
3477 | if (bad_attach) | |
dd24457d | 3478 | { |
c16158bc | 3479 | gdbserver_usage (stderr); |
dd24457d DJ |
3480 | exit (1); |
3481 | } | |
c906108c | 3482 | |
a20d5e98 | 3483 | initialize_async_io (); |
4ce44c66 | 3484 | initialize_low (); |
60f662b0 | 3485 | initialize_event_loop (); |
219f2f23 PA |
3486 | if (target_supports_tracepoints ()) |
3487 | initialize_tracepoint (); | |
4ce44c66 | 3488 | |
bca929d3 DE |
3489 | own_buf = xmalloc (PBUFSIZ + 1); |
3490 | mem_buf = xmalloc (PBUFSIZ); | |
0a30fbc4 | 3491 | |
2d717e4f | 3492 | if (pid == 0 && *next_arg != NULL) |
45b7b345 | 3493 | { |
2d717e4f DJ |
3494 | int i, n; |
3495 | ||
3496 | n = argc - (next_arg - argv); | |
bca929d3 | 3497 | program_argv = xmalloc (sizeof (char *) * (n + 1)); |
2d717e4f | 3498 | for (i = 0; i < n; i++) |
bca929d3 | 3499 | program_argv[i] = xstrdup (next_arg[i]); |
2d717e4f DJ |
3500 | program_argv[i] = NULL; |
3501 | ||
45b7b345 | 3502 | /* Wait till we are at first instruction in program. */ |
5b1c542e | 3503 | start_inferior (program_argv); |
c906108c | 3504 | |
c588c53c MS |
3505 | /* We are now (hopefully) stopped at the first instruction of |
3506 | the target process. This assumes that the target process was | |
3507 | successfully created. */ | |
45b7b345 | 3508 | } |
2d717e4f DJ |
3509 | else if (pid != 0) |
3510 | { | |
5b1c542e | 3511 | if (attach_inferior (pid) == -1) |
2d717e4f DJ |
3512 | error ("Attaching not supported on this target"); |
3513 | ||
3514 | /* Otherwise succeeded. */ | |
3515 | } | |
45b7b345 DJ |
3516 | else |
3517 | { | |
5b1c542e PA |
3518 | last_status.kind = TARGET_WAITKIND_EXITED; |
3519 | last_status.value.integer = 0; | |
95954743 | 3520 | last_ptid = minus_one_ptid; |
45b7b345 | 3521 | } |
860789c7 | 3522 | make_cleanup (detach_or_kill_for_exit_cleanup, NULL); |
c906108c | 3523 | |
14a00470 YQ |
3524 | initialize_notif (); |
3525 | ||
311de423 PA |
3526 | /* Don't report shared library events on the initial connection, |
3527 | even if some libraries are preloaded. Avoids the "stopped by | |
3528 | shared library event" notice on gdb side. */ | |
3529 | dlls_changed = 0; | |
3530 | ||
5b1c542e PA |
3531 | if (last_status.kind == TARGET_WAITKIND_EXITED |
3532 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2d717e4f DJ |
3533 | was_running = 0; |
3534 | else | |
3535 | was_running = 1; | |
3536 | ||
3537 | if (!was_running && !multi_mode) | |
860789c7 | 3538 | error ("No program to debug"); |
c588c53c | 3539 | |
c906108c SS |
3540 | while (1) |
3541 | { | |
860789c7 | 3542 | |
a6f3e723 | 3543 | noack_mode = 0; |
95954743 | 3544 | multi_process = 0; |
89245bc0 DB |
3545 | report_fork_events = 0; |
3546 | report_vfork_events = 0; | |
8336d594 PA |
3547 | /* Be sure we're out of tfind mode. */ |
3548 | current_traceframe = -1; | |
40e91bc7 | 3549 | cont_thread = null_ptid; |
1ec68e26 PA |
3550 | swbreak_feature = 0; |
3551 | hwbreak_feature = 0; | |
bd99dc85 | 3552 | |
2d717e4f | 3553 | remote_open (port); |
c906108c | 3554 | |
492d29ea | 3555 | TRY |
2d717e4f | 3556 | { |
860789c7 GB |
3557 | /* Wait for events. This will return when all event sources |
3558 | are removed from the event loop. */ | |
3559 | start_event_loop (); | |
2d717e4f | 3560 | |
860789c7 GB |
3561 | /* If an exit was requested (using the "monitor exit" |
3562 | command), terminate now. The only other way to get | |
3563 | here is for getpkt to fail; close the connection | |
3564 | and reopen it at the top of the loop. */ | |
bd99dc85 | 3565 | |
860789c7 GB |
3566 | if (exit_requested || run_once) |
3567 | throw_quit ("Quit"); | |
bd99dc85 | 3568 | |
860789c7 GB |
3569 | fprintf (stderr, |
3570 | "Remote side has terminated connection. " | |
3571 | "GDBserver will reopen the connection.\n"); | |
8336d594 | 3572 | |
860789c7 GB |
3573 | /* Get rid of any pending statuses. An eventual reconnection |
3574 | (by the same GDB instance or another) will refresh all its | |
3575 | state from scratch. */ | |
3576 | discard_queued_stop_replies (-1); | |
3577 | for_each_inferior (&all_threads, | |
3578 | clear_pending_status_callback); | |
9939e131 | 3579 | |
860789c7 | 3580 | if (tracing) |
8336d594 | 3581 | { |
860789c7 | 3582 | if (disconnected_tracing) |
8336d594 | 3583 | { |
860789c7 GB |
3584 | /* Try to enable non-stop/async mode, so we we can |
3585 | both wait for an async socket accept, and handle | |
3586 | async target events simultaneously. There's also | |
3587 | no point either in having the target always stop | |
3588 | all threads, when we're going to pass signals | |
3589 | down without informing GDB. */ | |
3590 | if (!non_stop) | |
3591 | { | |
3592 | if (start_non_stop (1)) | |
3593 | non_stop = 1; | |
3594 | ||
3595 | /* Detaching implicitly resumes all threads; | |
3596 | simply disconnecting does not. */ | |
3597 | } | |
3598 | } | |
3599 | else | |
3600 | { | |
3601 | fprintf (stderr, | |
3602 | "Disconnected tracing disabled; " | |
3603 | "stopping trace run.\n"); | |
3604 | stop_tracing (); | |
8336d594 PA |
3605 | } |
3606 | } | |
860789c7 | 3607 | } |
492d29ea | 3608 | CATCH (exception, RETURN_MASK_ERROR) |
860789c7 GB |
3609 | { |
3610 | if (response_needed) | |
8336d594 | 3611 | { |
860789c7 GB |
3612 | write_enn (own_buf); |
3613 | putpkt (own_buf); | |
8336d594 PA |
3614 | } |
3615 | } | |
492d29ea | 3616 | END_CATCH |
bd99dc85 PA |
3617 | } |
3618 | } | |
01f9e8fa | 3619 | |
860789c7 GB |
3620 | /* Main function. */ |
3621 | ||
3622 | int | |
3623 | main (int argc, char *argv[]) | |
3624 | { | |
860789c7 | 3625 | |
492d29ea | 3626 | TRY |
860789c7 GB |
3627 | { |
3628 | captured_main (argc, argv); | |
3629 | } | |
492d29ea | 3630 | CATCH (exception, RETURN_MASK_ALL) |
860789c7 | 3631 | { |
492d29ea PA |
3632 | if (exception.reason == RETURN_ERROR) |
3633 | { | |
3634 | fflush (stdout); | |
3635 | fprintf (stderr, "%s\n", exception.message); | |
3636 | fprintf (stderr, "Exiting\n"); | |
3637 | exit_code = 1; | |
3638 | } | |
3639 | ||
3640 | exit (exit_code); | |
860789c7 | 3641 | } |
492d29ea | 3642 | END_CATCH |
860789c7 | 3643 | |
492d29ea | 3644 | gdb_assert_not_reached ("captured_main should never return"); |
860789c7 GB |
3645 | } |
3646 | ||
d708bcd1 PA |
3647 | /* Skip PACKET until the next semi-colon (or end of string). */ |
3648 | ||
3649 | static void | |
3650 | skip_to_semicolon (char **packet) | |
3651 | { | |
3652 | while (**packet != '\0' && **packet != ';') | |
3653 | (*packet)++; | |
3654 | } | |
3655 | ||
802e8e6d PA |
3656 | /* Process options coming from Z packets for a breakpoint. PACKET is |
3657 | the packet buffer. *PACKET is updated to point to the first char | |
3658 | after the last processed option. */ | |
9f3a5c85 LM |
3659 | |
3660 | static void | |
802e8e6d | 3661 | process_point_options (struct breakpoint *bp, char **packet) |
9f3a5c85 LM |
3662 | { |
3663 | char *dataptr = *packet; | |
d3ce09f5 | 3664 | int persist; |
9f3a5c85 LM |
3665 | |
3666 | /* Check if data has the correct format. */ | |
3667 | if (*dataptr != ';') | |
3668 | return; | |
3669 | ||
3670 | dataptr++; | |
3671 | ||
3672 | while (*dataptr) | |
3673 | { | |
d3ce09f5 SS |
3674 | if (*dataptr == ';') |
3675 | ++dataptr; | |
3676 | ||
3677 | if (*dataptr == 'X') | |
9f3a5c85 | 3678 | { |
d3ce09f5 | 3679 | /* Conditional expression. */ |
d171ca78 | 3680 | if (debug_threads) |
87ce2a04 | 3681 | debug_printf ("Found breakpoint condition.\n"); |
802e8e6d | 3682 | if (!add_breakpoint_condition (bp, &dataptr)) |
d708bcd1 | 3683 | skip_to_semicolon (&dataptr); |
d3ce09f5 | 3684 | } |
61012eef | 3685 | else if (startswith (dataptr, "cmds:")) |
d3ce09f5 SS |
3686 | { |
3687 | dataptr += strlen ("cmds:"); | |
3688 | if (debug_threads) | |
87ce2a04 | 3689 | debug_printf ("Found breakpoint commands %s.\n", dataptr); |
d3ce09f5 SS |
3690 | persist = (*dataptr == '1'); |
3691 | dataptr += 2; | |
802e8e6d | 3692 | if (add_breakpoint_commands (bp, &dataptr, persist)) |
d708bcd1 | 3693 | skip_to_semicolon (&dataptr); |
d3ce09f5 SS |
3694 | } |
3695 | else | |
3696 | { | |
d3ce09f5 SS |
3697 | fprintf (stderr, "Unknown token %c, ignoring.\n", |
3698 | *dataptr); | |
78a99e91 | 3699 | /* Skip tokens until we find one that we recognize. */ |
d708bcd1 | 3700 | skip_to_semicolon (&dataptr); |
9f3a5c85 | 3701 | } |
9f3a5c85 LM |
3702 | } |
3703 | *packet = dataptr; | |
3704 | } | |
3705 | ||
bd99dc85 PA |
3706 | /* Event loop callback that handles a serial event. The first byte in |
3707 | the serial buffer gets us here. We expect characters to arrive at | |
3708 | a brisk pace, so we read the rest of the packet with a blocking | |
3709 | getpkt call. */ | |
01f9e8fa | 3710 | |
8336d594 | 3711 | static int |
bd99dc85 PA |
3712 | process_serial_event (void) |
3713 | { | |
3714 | char ch; | |
3715 | int i = 0; | |
3716 | int signal; | |
3717 | unsigned int len; | |
764880b7 | 3718 | int res; |
bd99dc85 | 3719 | CORE_ADDR mem_addr; |
95954743 | 3720 | int pid; |
bd99dc85 PA |
3721 | unsigned char sig; |
3722 | int packet_len; | |
3723 | int new_packet_len = -1; | |
3724 | ||
3725 | /* Used to decide when gdbserver should exit in | |
3726 | multi-mode/remote. */ | |
3727 | static int have_ran = 0; | |
3728 | ||
3729 | if (!have_ran) | |
3730 | have_ran = target_running (); | |
3731 | ||
3732 | disable_async_io (); | |
3733 | ||
3734 | response_needed = 0; | |
3735 | packet_len = getpkt (own_buf); | |
3736 | if (packet_len <= 0) | |
3737 | { | |
bd99dc85 | 3738 | remote_close (); |
8336d594 PA |
3739 | /* Force an event loop break. */ |
3740 | return -1; | |
bd99dc85 PA |
3741 | } |
3742 | response_needed = 1; | |
3743 | ||
3744 | i = 0; | |
3745 | ch = own_buf[i++]; | |
3746 | switch (ch) | |
3747 | { | |
3748 | case 'q': | |
3749 | handle_query (own_buf, packet_len, &new_packet_len); | |
3750 | break; | |
3751 | case 'Q': | |
3752 | handle_general_set (own_buf); | |
3753 | break; | |
3754 | case 'D': | |
3755 | require_running (own_buf); | |
95954743 PA |
3756 | |
3757 | if (multi_process) | |
3758 | { | |
3759 | i++; /* skip ';' */ | |
3760 | pid = strtol (&own_buf[i], NULL, 16); | |
3761 | } | |
3762 | else | |
fbd5db48 | 3763 | pid = ptid_get_pid (current_ptid); |
95954743 | 3764 | |
d3ce09f5 | 3765 | if ((tracing && disconnected_tracing) || any_persistent_commands ()) |
8336d594 PA |
3766 | { |
3767 | struct thread_resume resume_info; | |
3768 | struct process_info *process = find_process_pid (pid); | |
3769 | ||
3770 | if (process == NULL) | |
3771 | { | |
3772 | write_enn (own_buf); | |
3773 | break; | |
3774 | } | |
3775 | ||
d3ce09f5 SS |
3776 | if (tracing && disconnected_tracing) |
3777 | fprintf (stderr, | |
3778 | "Disconnected tracing in effect, " | |
3779 | "leaving gdbserver attached to the process\n"); | |
3780 | ||
3781 | if (any_persistent_commands ()) | |
3782 | fprintf (stderr, | |
3783 | "Persistent commands are present, " | |
3784 | "leaving gdbserver attached to the process\n"); | |
8336d594 PA |
3785 | |
3786 | /* Make sure we're in non-stop/async mode, so we we can both | |
3787 | wait for an async socket accept, and handle async target | |
3788 | events simultaneously. There's also no point either in | |
3789 | having the target stop all threads, when we're going to | |
3790 | pass signals down without informing GDB. */ | |
3791 | if (!non_stop) | |
3792 | { | |
3793 | if (debug_threads) | |
87ce2a04 | 3794 | debug_printf ("Forcing non-stop mode\n"); |
8336d594 PA |
3795 | |
3796 | non_stop = 1; | |
3797 | start_non_stop (1); | |
3798 | } | |
3799 | ||
3800 | process->gdb_detached = 1; | |
3801 | ||
3802 | /* Detaching implicitly resumes all threads. */ | |
3803 | resume_info.thread = minus_one_ptid; | |
3804 | resume_info.kind = resume_continue; | |
3805 | resume_info.sig = 0; | |
3806 | (*the_target->resume) (&resume_info, 1); | |
3807 | ||
3808 | write_ok (own_buf); | |
3809 | break; /* from switch/case */ | |
3810 | } | |
3811 | ||
95954743 | 3812 | fprintf (stderr, "Detaching from process %d\n", pid); |
8336d594 | 3813 | stop_tracing (); |
95954743 | 3814 | if (detach_inferior (pid) != 0) |
bd99dc85 PA |
3815 | write_enn (own_buf); |
3816 | else | |
3817 | { | |
95954743 | 3818 | discard_queued_stop_replies (pid); |
bd99dc85 PA |
3819 | write_ok (own_buf); |
3820 | ||
3821 | if (extended_protocol) | |
c906108c | 3822 | { |
bd99dc85 PA |
3823 | /* Treat this like a normal program exit. */ |
3824 | last_status.kind = TARGET_WAITKIND_EXITED; | |
3825 | last_status.value.integer = 0; | |
95954743 | 3826 | last_ptid = pid_to_ptid (pid); |
2d717e4f | 3827 | |
0bfdf32f | 3828 | current_thread = NULL; |
bd99dc85 PA |
3829 | } |
3830 | else | |
3831 | { | |
3832 | putpkt (own_buf); | |
3833 | remote_close (); | |
3834 | ||
3835 | /* If we are attached, then we can exit. Otherwise, we | |
3836 | need to hang around doing nothing, until the child is | |
3837 | gone. */ | |
71f55dd8 | 3838 | join_inferior (pid); |
bd99dc85 PA |
3839 | exit (0); |
3840 | } | |
3841 | } | |
3842 | break; | |
3843 | case '!': | |
3844 | extended_protocol = 1; | |
3845 | write_ok (own_buf); | |
3846 | break; | |
3847 | case '?': | |
3848 | handle_status (own_buf); | |
3849 | break; | |
3850 | case 'H': | |
3851 | if (own_buf[1] == 'c' || own_buf[1] == 'g' || own_buf[1] == 's') | |
3852 | { | |
95954743 PA |
3853 | ptid_t gdb_id, thread_id; |
3854 | int pid; | |
bd99dc85 PA |
3855 | |
3856 | require_running (own_buf); | |
95954743 PA |
3857 | |
3858 | gdb_id = read_ptid (&own_buf[2], NULL); | |
3859 | ||
3860 | pid = ptid_get_pid (gdb_id); | |
3861 | ||
3862 | if (ptid_equal (gdb_id, null_ptid) | |
3863 | || ptid_equal (gdb_id, minus_one_ptid)) | |
3864 | thread_id = null_ptid; | |
3865 | else if (pid != 0 | |
3866 | && ptid_equal (pid_to_ptid (pid), | |
3867 | gdb_id)) | |
3868 | { | |
3869 | struct thread_info *thread = | |
3870 | (struct thread_info *) find_inferior (&all_threads, | |
3871 | first_thread_of, | |
3872 | &pid); | |
3873 | if (!thread) | |
3874 | { | |
3875 | write_enn (own_buf); | |
3876 | break; | |
3877 | } | |
3878 | ||
80894984 | 3879 | thread_id = thread->entry.id; |
95954743 | 3880 | } |
bd99dc85 PA |
3881 | else |
3882 | { | |
3883 | thread_id = gdb_id_to_thread_id (gdb_id); | |
95954743 | 3884 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 3885 | { |
a06660f7 | 3886 | write_enn (own_buf); |
c906108c SS |
3887 | break; |
3888 | } | |
c906108c SS |
3889 | } |
3890 | ||
bd99dc85 | 3891 | if (own_buf[1] == 'g') |
c906108c | 3892 | { |
95954743 | 3893 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 3894 | { |
bd99dc85 PA |
3895 | /* GDB is telling us to choose any thread. Check if |
3896 | the currently selected thread is still valid. If | |
3897 | it is not, select the first available. */ | |
3898 | struct thread_info *thread = | |
3899 | (struct thread_info *) find_inferior_id (&all_threads, | |
3900 | general_thread); | |
3901 | if (thread == NULL) | |
649ebbca DE |
3902 | { |
3903 | thread = get_first_thread (); | |
3904 | thread_id = thread->entry.id; | |
3905 | } | |
c906108c | 3906 | } |
bd99dc85 PA |
3907 | |
3908 | general_thread = thread_id; | |
0bfdf32f | 3909 | set_desired_thread (1); |
c906108c | 3910 | } |
bd99dc85 PA |
3911 | else if (own_buf[1] == 'c') |
3912 | cont_thread = thread_id; | |
c906108c | 3913 | |
bd99dc85 PA |
3914 | write_ok (own_buf); |
3915 | } | |
3916 | else | |
3917 | { | |
3918 | /* Silently ignore it so that gdb can extend the protocol | |
3919 | without compatibility headaches. */ | |
3920 | own_buf[0] = '\0'; | |
2d717e4f | 3921 | } |
bd99dc85 PA |
3922 | break; |
3923 | case 'g': | |
219f2f23 PA |
3924 | require_running (own_buf); |
3925 | if (current_traceframe >= 0) | |
3926 | { | |
3aee8918 PA |
3927 | struct regcache *regcache |
3928 | = new_register_cache (current_target_desc ()); | |
219f2f23 PA |
3929 | |
3930 | if (fetch_traceframe_registers (current_traceframe, | |
3931 | regcache, -1) == 0) | |
3932 | registers_to_string (regcache, own_buf); | |
3933 | else | |
3934 | write_enn (own_buf); | |
3935 | free_register_cache (regcache); | |
3936 | } | |
3937 | else | |
3938 | { | |
3939 | struct regcache *regcache; | |
3940 | ||
0bfdf32f GB |
3941 | set_desired_thread (1); |
3942 | regcache = get_thread_regcache (current_thread, 1); | |
219f2f23 PA |
3943 | registers_to_string (regcache, own_buf); |
3944 | } | |
bd99dc85 PA |
3945 | break; |
3946 | case 'G': | |
219f2f23 PA |
3947 | require_running (own_buf); |
3948 | if (current_traceframe >= 0) | |
3949 | write_enn (own_buf); | |
3950 | else | |
3951 | { | |
442ea881 PA |
3952 | struct regcache *regcache; |
3953 | ||
0bfdf32f GB |
3954 | set_desired_thread (1); |
3955 | regcache = get_thread_regcache (current_thread, 1); | |
442ea881 PA |
3956 | registers_from_string (regcache, &own_buf[1]); |
3957 | write_ok (own_buf); | |
3958 | } | |
bd99dc85 PA |
3959 | break; |
3960 | case 'm': | |
3961 | require_running (own_buf); | |
3962 | decode_m_packet (&own_buf[1], &mem_addr, &len); | |
764880b7 PA |
3963 | res = gdb_read_memory (mem_addr, mem_buf, len); |
3964 | if (res < 0) | |
bd99dc85 | 3965 | write_enn (own_buf); |
764880b7 | 3966 | else |
e9371aff | 3967 | bin2hex (mem_buf, own_buf, res); |
bd99dc85 PA |
3968 | break; |
3969 | case 'M': | |
3970 | require_running (own_buf); | |
fa593d66 | 3971 | decode_M_packet (&own_buf[1], &mem_addr, &len, &mem_buf); |
90d74c30 | 3972 | if (gdb_write_memory (mem_addr, mem_buf, len) == 0) |
bd99dc85 PA |
3973 | write_ok (own_buf); |
3974 | else | |
3975 | write_enn (own_buf); | |
3976 | break; | |
3977 | case 'X': | |
3978 | require_running (own_buf); | |
3979 | if (decode_X_packet (&own_buf[1], packet_len - 1, | |
fa593d66 | 3980 | &mem_addr, &len, &mem_buf) < 0 |
90d74c30 | 3981 | || gdb_write_memory (mem_addr, mem_buf, len) != 0) |
bd99dc85 PA |
3982 | write_enn (own_buf); |
3983 | else | |
3984 | write_ok (own_buf); | |
3985 | break; | |
3986 | case 'C': | |
3987 | require_running (own_buf); | |
a7191e8b | 3988 | hex2bin (own_buf + 1, &sig, 1); |
2ea28649 PA |
3989 | if (gdb_signal_to_host_p (sig)) |
3990 | signal = gdb_signal_to_host (sig); | |
bd99dc85 PA |
3991 | else |
3992 | signal = 0; | |
3993 | myresume (own_buf, 0, signal); | |
3994 | break; | |
3995 | case 'S': | |
3996 | require_running (own_buf); | |
a7191e8b | 3997 | hex2bin (own_buf + 1, &sig, 1); |
2ea28649 PA |
3998 | if (gdb_signal_to_host_p (sig)) |
3999 | signal = gdb_signal_to_host (sig); | |
bd99dc85 PA |
4000 | else |
4001 | signal = 0; | |
4002 | myresume (own_buf, 1, signal); | |
4003 | break; | |
4004 | case 'c': | |
4005 | require_running (own_buf); | |
4006 | signal = 0; | |
4007 | myresume (own_buf, 0, signal); | |
4008 | break; | |
4009 | case 's': | |
4010 | require_running (own_buf); | |
4011 | signal = 0; | |
4012 | myresume (own_buf, 1, signal); | |
4013 | break; | |
c6314022 AR |
4014 | case 'Z': /* insert_ ... */ |
4015 | /* Fallthrough. */ | |
4016 | case 'z': /* remove_ ... */ | |
bd99dc85 | 4017 | { |
bd99dc85 | 4018 | char *dataptr; |
aca22551 PA |
4019 | ULONGEST addr; |
4020 | int len; | |
bd99dc85 | 4021 | char type = own_buf[1]; |
c6314022 | 4022 | int res; |
d993e290 | 4023 | const int insert = ch == 'Z'; |
aca22551 PA |
4024 | char *p = &own_buf[3]; |
4025 | ||
4026 | p = unpack_varlen_hex (p, &addr); | |
4027 | len = strtol (p + 1, &dataptr, 16); | |
c6314022 | 4028 | |
802e8e6d | 4029 | if (insert) |
d993e290 | 4030 | { |
802e8e6d PA |
4031 | struct breakpoint *bp; |
4032 | ||
4033 | bp = set_gdb_breakpoint (type, addr, len, &res); | |
4034 | if (bp != NULL) | |
9f3a5c85 | 4035 | { |
802e8e6d PA |
4036 | res = 0; |
4037 | ||
4038 | /* GDB may have sent us a list of *point parameters to | |
4039 | be evaluated on the target's side. Read such list | |
4040 | here. If we already have a list of parameters, GDB | |
4041 | is telling us to drop that list and use this one | |
4042 | instead. */ | |
0a261ed8 | 4043 | clear_breakpoint_conditions_and_commands (bp); |
802e8e6d | 4044 | process_point_options (bp, &dataptr); |
9f3a5c85 | 4045 | } |
d993e290 | 4046 | } |
802e8e6d PA |
4047 | else |
4048 | res = delete_gdb_breakpoint (type, addr, len); | |
bd99dc85 | 4049 | |
c6314022 AR |
4050 | if (res == 0) |
4051 | write_ok (own_buf); | |
4052 | else if (res == 1) | |
4053 | /* Unsupported. */ | |
4054 | own_buf[0] = '\0'; | |
bd99dc85 | 4055 | else |
c6314022 | 4056 | write_enn (own_buf); |
bd99dc85 PA |
4057 | break; |
4058 | } | |
4059 | case 'k': | |
4060 | response_needed = 0; | |
4061 | if (!target_running ()) | |
95954743 PA |
4062 | /* The packet we received doesn't make sense - but we can't |
4063 | reply to it, either. */ | |
8336d594 | 4064 | return 0; |
c906108c | 4065 | |
95954743 PA |
4066 | fprintf (stderr, "Killing all inferiors\n"); |
4067 | for_each_inferior (&all_processes, kill_inferior_callback); | |
c906108c | 4068 | |
bd99dc85 PA |
4069 | /* When using the extended protocol, we wait with no program |
4070 | running. The traditional protocol will exit instead. */ | |
4071 | if (extended_protocol) | |
4072 | { | |
4073 | last_status.kind = TARGET_WAITKIND_EXITED; | |
a493e3e2 | 4074 | last_status.value.sig = GDB_SIGNAL_KILL; |
8336d594 | 4075 | return 0; |
bd99dc85 PA |
4076 | } |
4077 | else | |
8336d594 PA |
4078 | exit (0); |
4079 | ||
bd99dc85 PA |
4080 | case 'T': |
4081 | { | |
95954743 | 4082 | ptid_t gdb_id, thread_id; |
bd99dc85 PA |
4083 | |
4084 | require_running (own_buf); | |
95954743 PA |
4085 | |
4086 | gdb_id = read_ptid (&own_buf[1], NULL); | |
bd99dc85 | 4087 | thread_id = gdb_id_to_thread_id (gdb_id); |
95954743 | 4088 | if (ptid_equal (thread_id, null_ptid)) |
bd99dc85 PA |
4089 | { |
4090 | write_enn (own_buf); | |
4091 | break; | |
4092 | } | |
4093 | ||
4094 | if (mythread_alive (thread_id)) | |
4095 | write_ok (own_buf); | |
4096 | else | |
4097 | write_enn (own_buf); | |
4098 | } | |
4099 | break; | |
4100 | case 'R': | |
4101 | response_needed = 0; | |
4102 | ||
4103 | /* Restarting the inferior is only supported in the extended | |
4104 | protocol. */ | |
4105 | if (extended_protocol) | |
4106 | { | |
4107 | if (target_running ()) | |
95954743 PA |
4108 | for_each_inferior (&all_processes, |
4109 | kill_inferior_callback); | |
bd99dc85 PA |
4110 | fprintf (stderr, "GDBserver restarting\n"); |
4111 | ||
4112 | /* Wait till we are at 1st instruction in prog. */ | |
4113 | if (program_argv != NULL) | |
51aee833 YQ |
4114 | { |
4115 | start_inferior (program_argv); | |
4116 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
4117 | { | |
4118 | /* Stopped at the first instruction of the target | |
4119 | process. */ | |
4120 | general_thread = last_ptid; | |
4121 | } | |
4122 | else | |
4123 | { | |
4124 | /* Something went wrong. */ | |
4125 | general_thread = null_ptid; | |
4126 | } | |
4127 | } | |
bd99dc85 PA |
4128 | else |
4129 | { | |
4130 | last_status.kind = TARGET_WAITKIND_EXITED; | |
a493e3e2 | 4131 | last_status.value.sig = GDB_SIGNAL_KILL; |
bd99dc85 | 4132 | } |
8336d594 | 4133 | return 0; |
c906108c SS |
4134 | } |
4135 | else | |
4136 | { | |
bd99dc85 PA |
4137 | /* It is a request we don't understand. Respond with an |
4138 | empty packet so that gdb knows that we don't support this | |
4139 | request. */ | |
4140 | own_buf[0] = '\0'; | |
4141 | break; | |
4142 | } | |
4143 | case 'v': | |
4144 | /* Extended (long) request. */ | |
4145 | handle_v_requests (own_buf, packet_len, &new_packet_len); | |
4146 | break; | |
4147 | ||
4148 | default: | |
4149 | /* It is a request we don't understand. Respond with an empty | |
4150 | packet so that gdb knows that we don't support this | |
4151 | request. */ | |
4152 | own_buf[0] = '\0'; | |
4153 | break; | |
4154 | } | |
4155 | ||
4156 | if (new_packet_len != -1) | |
4157 | putpkt_binary (own_buf, new_packet_len); | |
4158 | else | |
4159 | putpkt (own_buf); | |
4160 | ||
4161 | response_needed = 0; | |
4162 | ||
4163 | if (!extended_protocol && have_ran && !target_running ()) | |
4164 | { | |
4165 | /* In non-stop, defer exiting until GDB had a chance to query | |
4166 | the whole vStopped list (until it gets an OK). */ | |
14a00470 | 4167 | if (QUEUE_is_empty (notif_event_p, notif_stop.queue)) |
bd99dc85 | 4168 | { |
1a3d890b PA |
4169 | /* Be transparent when GDB is connected through stdio -- no |
4170 | need to spam GDB's console. */ | |
4171 | if (!remote_connection_is_stdio ()) | |
4172 | fprintf (stderr, "GDBserver exiting\n"); | |
c906108c | 4173 | remote_close (); |
bd99dc85 | 4174 | exit (0); |
c906108c SS |
4175 | } |
4176 | } | |
8336d594 PA |
4177 | |
4178 | if (exit_requested) | |
4179 | return -1; | |
4180 | ||
4181 | return 0; | |
c906108c | 4182 | } |
bd99dc85 PA |
4183 | |
4184 | /* Event-loop callback for serial events. */ | |
4185 | ||
8336d594 | 4186 | int |
bd99dc85 PA |
4187 | handle_serial_event (int err, gdb_client_data client_data) |
4188 | { | |
4189 | if (debug_threads) | |
87ce2a04 | 4190 | debug_printf ("handling possible serial event\n"); |
bd99dc85 PA |
4191 | |
4192 | /* Really handle it. */ | |
8336d594 PA |
4193 | if (process_serial_event () < 0) |
4194 | return -1; | |
bd99dc85 | 4195 | |
0bfdf32f | 4196 | /* Be sure to not change the selected thread behind GDB's back. |
bd99dc85 | 4197 | Important in the non-stop mode asynchronous protocol. */ |
0bfdf32f | 4198 | set_desired_thread (1); |
8336d594 PA |
4199 | |
4200 | return 0; | |
bd99dc85 PA |
4201 | } |
4202 | ||
4203 | /* Event-loop callback for target events. */ | |
4204 | ||
8336d594 | 4205 | int |
bd99dc85 PA |
4206 | handle_target_event (int err, gdb_client_data client_data) |
4207 | { | |
4208 | if (debug_threads) | |
87ce2a04 | 4209 | debug_printf ("handling possible target event\n"); |
bd99dc85 | 4210 | |
95954743 PA |
4211 | last_ptid = mywait (minus_one_ptid, &last_status, |
4212 | TARGET_WNOHANG, 1); | |
bd99dc85 | 4213 | |
fa96cb38 PA |
4214 | if (last_status.kind == TARGET_WAITKIND_NO_RESUMED) |
4215 | { | |
4216 | /* No RSP support for this yet. */ | |
4217 | } | |
4218 | else if (last_status.kind != TARGET_WAITKIND_IGNORE) | |
bd99dc85 | 4219 | { |
8336d594 PA |
4220 | int pid = ptid_get_pid (last_ptid); |
4221 | struct process_info *process = find_process_pid (pid); | |
4222 | int forward_event = !gdb_connected () || process->gdb_detached; | |
4223 | ||
4224 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
4225 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
f9e39928 PA |
4226 | { |
4227 | mark_breakpoints_out (process); | |
4228 | mourn_inferior (process); | |
4229 | } | |
ce1a5b52 | 4230 | else |
d20a8ad9 PA |
4231 | { |
4232 | /* We're reporting this thread as stopped. Update its | |
4233 | "want-stopped" state to what the client wants, until it | |
4234 | gets a new resume action. */ | |
0bfdf32f GB |
4235 | current_thread->last_resume_kind = resume_stop; |
4236 | current_thread->last_status = last_status; | |
d20a8ad9 | 4237 | } |
8336d594 PA |
4238 | |
4239 | if (forward_event) | |
4240 | { | |
4241 | if (!target_running ()) | |
4242 | { | |
4243 | /* The last process exited. We're done. */ | |
4244 | exit (0); | |
4245 | } | |
4246 | ||
4247 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
4248 | { | |
4249 | /* A thread stopped with a signal, but gdb isn't | |
4250 | connected to handle it. Pass it down to the | |
4251 | inferior, as if it wasn't being traced. */ | |
4252 | struct thread_resume resume_info; | |
4253 | ||
4254 | if (debug_threads) | |
87ce2a04 DE |
4255 | debug_printf ("GDB not connected; forwarding event %d for" |
4256 | " [%s]\n", | |
4257 | (int) last_status.kind, | |
4258 | target_pid_to_str (last_ptid)); | |
8336d594 PA |
4259 | |
4260 | resume_info.thread = last_ptid; | |
4261 | resume_info.kind = resume_continue; | |
2ea28649 | 4262 | resume_info.sig = gdb_signal_to_host (last_status.value.sig); |
8336d594 PA |
4263 | (*the_target->resume) (&resume_info, 1); |
4264 | } | |
4265 | else if (debug_threads) | |
87ce2a04 DE |
4266 | debug_printf ("GDB not connected; ignoring event %d for [%s]\n", |
4267 | (int) last_status.kind, | |
4268 | target_pid_to_str (last_ptid)); | |
8336d594 PA |
4269 | } |
4270 | else | |
4271 | { | |
14a00470 YQ |
4272 | struct vstop_notif *vstop_notif |
4273 | = xmalloc (sizeof (struct vstop_notif)); | |
4274 | ||
4275 | vstop_notif->status = last_status; | |
4276 | vstop_notif->ptid = last_ptid; | |
4277 | /* Push Stop notification. */ | |
4278 | notif_push (¬if_stop, | |
4279 | (struct notif_event *) vstop_notif); | |
8336d594 | 4280 | } |
bd99dc85 PA |
4281 | } |
4282 | ||
0bfdf32f | 4283 | /* Be sure to not change the selected thread behind GDB's back. |
bd99dc85 | 4284 | Important in the non-stop mode asynchronous protocol. */ |
0bfdf32f | 4285 | set_desired_thread (1); |
8336d594 PA |
4286 | |
4287 | return 0; | |
bd99dc85 | 4288 | } |