Commit | Line | Data |
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c906108c | 1 | /* Main code for remote server for GDB. |
618f726f | 2 | Copyright (C) 1989-2016 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" |
f348d89a | 25 | #include "signals-state-save-restore.h" |
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 | ||
17b1509a | 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; | |
94585166 | 62 | int report_exec_events; |
65706a29 | 63 | int report_thread_events; |
f2faf941 PA |
64 | |
65 | /* Whether to report TARGET_WAITKING_NO_RESUMED events. */ | |
66 | static int report_no_resumed; | |
67 | ||
bd99dc85 | 68 | int non_stop; |
1ec68e26 PA |
69 | int swbreak_feature; |
70 | int hwbreak_feature; | |
bd99dc85 | 71 | |
750ce8d1 YQ |
72 | /* True if the "vContSupported" feature is active. In that case, GDB |
73 | wants us to report whether single step is supported in the reply to | |
74 | "vCont?" packet. */ | |
75 | static int vCont_supported; | |
76 | ||
03583c20 UW |
77 | /* Whether we should attempt to disable the operating system's address |
78 | space randomization feature before starting an inferior. */ | |
79 | int disable_randomization = 1; | |
80 | ||
ccd213ac | 81 | static char **program_argv, **wrapper_argv; |
2d717e4f | 82 | |
a493e3e2 PA |
83 | int pass_signals[GDB_SIGNAL_LAST]; |
84 | int program_signals[GDB_SIGNAL_LAST]; | |
9b224c5e | 85 | int program_signals_p; |
89be2091 | 86 | |
a9fa9f7d DJ |
87 | /* The PID of the originally created or attached inferior. Used to |
88 | send signals to the process when GDB sends us an asynchronous interrupt | |
89 | (user hitting Control-C in the client), and to wait for the child to exit | |
90 | when no longer debugging it. */ | |
91 | ||
a1928bad | 92 | unsigned long signal_pid; |
a9fa9f7d | 93 | |
290fadea RS |
94 | #ifdef SIGTTOU |
95 | /* A file descriptor for the controlling terminal. */ | |
96 | int terminal_fd; | |
97 | ||
98 | /* TERMINAL_FD's original foreground group. */ | |
99 | pid_t old_foreground_pgrp; | |
100 | ||
101 | /* Hand back terminal ownership to the original foreground group. */ | |
102 | ||
103 | static void | |
104 | restore_old_foreground_pgrp (void) | |
105 | { | |
106 | tcsetpgrp (terminal_fd, old_foreground_pgrp); | |
107 | } | |
108 | #endif | |
109 | ||
ec56be1b PA |
110 | /* Set if you want to disable optional thread related packets support |
111 | in gdbserver, for the sake of testing GDB against stubs that don't | |
112 | support them. */ | |
113 | int disable_packet_vCont; | |
114 | int disable_packet_Tthread; | |
115 | int disable_packet_qC; | |
116 | int disable_packet_qfThreadInfo; | |
117 | ||
5b1c542e PA |
118 | /* Last status reported to GDB. */ |
119 | static struct target_waitstatus last_status; | |
95954743 | 120 | static ptid_t last_ptid; |
5b1c542e | 121 | |
28170b88 | 122 | char *own_buf; |
bd99dc85 PA |
123 | static unsigned char *mem_buf; |
124 | ||
14a00470 YQ |
125 | /* A sub-class of 'struct notif_event' for stop, holding information |
126 | relative to a single stop reply. We keep a queue of these to | |
127 | push to GDB in non-stop mode. */ | |
128 | ||
bd99dc85 PA |
129 | struct vstop_notif |
130 | { | |
14a00470 | 131 | struct notif_event base; |
bd99dc85 PA |
132 | |
133 | /* Thread or process that got the event. */ | |
95954743 | 134 | ptid_t ptid; |
bd99dc85 PA |
135 | |
136 | /* Event info. */ | |
137 | struct target_waitstatus status; | |
138 | }; | |
139 | ||
f4abbc16 MM |
140 | /* The current btrace configuration. This is gdbserver's mirror of GDB's |
141 | btrace configuration. */ | |
142 | static struct btrace_config current_btrace_conf; | |
143 | ||
14a00470 | 144 | DEFINE_QUEUE_P (notif_event_p); |
bd99dc85 PA |
145 | |
146 | /* Put a stop reply to the stop reply queue. */ | |
147 | ||
148 | static void | |
95954743 | 149 | queue_stop_reply (ptid_t ptid, struct target_waitstatus *status) |
bd99dc85 | 150 | { |
8d749320 | 151 | struct vstop_notif *new_notif = XNEW (struct vstop_notif); |
bd99dc85 | 152 | |
bd99dc85 PA |
153 | new_notif->ptid = ptid; |
154 | new_notif->status = *status; | |
155 | ||
14a00470 | 156 | notif_event_enque (¬if_stop, (struct notif_event *) new_notif); |
bd99dc85 PA |
157 | } |
158 | ||
14a00470 | 159 | static int |
465a859e PA |
160 | remove_all_on_match_ptid (QUEUE (notif_event_p) *q, |
161 | QUEUE_ITER (notif_event_p) *iter, | |
162 | struct notif_event *event, | |
163 | void *data) | |
bd99dc85 | 164 | { |
465a859e PA |
165 | ptid_t filter_ptid = *(ptid_t *) data; |
166 | struct vstop_notif *vstop_event = (struct vstop_notif *) event; | |
d20a8ad9 | 167 | |
465a859e | 168 | if (ptid_match (vstop_event->ptid, filter_ptid)) |
bd99dc85 | 169 | { |
14a00470 YQ |
170 | if (q->free_func != NULL) |
171 | q->free_func (event); | |
172 | ||
173 | QUEUE_remove_elem (notif_event_p, q, iter); | |
bd99dc85 | 174 | } |
14a00470 YQ |
175 | |
176 | return 1; | |
bd99dc85 PA |
177 | } |
178 | ||
465a859e | 179 | /* See server.h. */ |
bd99dc85 | 180 | |
465a859e PA |
181 | void |
182 | discard_queued_stop_replies (ptid_t ptid) | |
bd99dc85 | 183 | { |
14a00470 | 184 | QUEUE_iterate (notif_event_p, notif_stop.queue, |
465a859e | 185 | remove_all_on_match_ptid, &ptid); |
bd99dc85 PA |
186 | } |
187 | ||
bd99dc85 | 188 | static void |
14a00470 | 189 | vstop_notif_reply (struct notif_event *event, char *own_buf) |
bd99dc85 | 190 | { |
14a00470 YQ |
191 | struct vstop_notif *vstop = (struct vstop_notif *) event; |
192 | ||
193 | prepare_resume_reply (own_buf, vstop->ptid, &vstop->status); | |
bd99dc85 PA |
194 | } |
195 | ||
5a04c4cf PA |
196 | /* QUEUE_iterate callback helper for in_queued_stop_replies. */ |
197 | ||
198 | static int | |
199 | in_queued_stop_replies_ptid (QUEUE (notif_event_p) *q, | |
200 | QUEUE_ITER (notif_event_p) *iter, | |
201 | struct notif_event *event, | |
202 | void *data) | |
203 | { | |
204 | ptid_t filter_ptid = *(ptid_t *) data; | |
205 | struct vstop_notif *vstop_event = (struct vstop_notif *) event; | |
206 | ||
207 | if (ptid_match (vstop_event->ptid, filter_ptid)) | |
208 | return 0; | |
209 | ||
210 | /* Don't resume fork children that GDB does not know about yet. */ | |
211 | if ((vstop_event->status.kind == TARGET_WAITKIND_FORKED | |
212 | || vstop_event->status.kind == TARGET_WAITKIND_VFORKED) | |
213 | && ptid_match (vstop_event->status.value.related_pid, filter_ptid)) | |
214 | return 0; | |
215 | ||
216 | return 1; | |
217 | } | |
218 | ||
219 | /* See server.h. */ | |
220 | ||
221 | int | |
222 | in_queued_stop_replies (ptid_t ptid) | |
223 | { | |
224 | return !QUEUE_iterate (notif_event_p, notif_stop.queue, | |
225 | in_queued_stop_replies_ptid, &ptid); | |
226 | } | |
227 | ||
14a00470 YQ |
228 | struct notif_server notif_stop = |
229 | { | |
230 | "vStopped", "Stop", NULL, vstop_notif_reply, | |
231 | }; | |
232 | ||
2d717e4f DJ |
233 | static int |
234 | target_running (void) | |
235 | { | |
649ebbca | 236 | return get_first_thread () != NULL; |
2d717e4f DJ |
237 | } |
238 | ||
fc620387 | 239 | static int |
5b1c542e | 240 | start_inferior (char **argv) |
c906108c | 241 | { |
ccd213ac | 242 | char **new_argv = argv; |
2d717e4f | 243 | |
ccd213ac DJ |
244 | if (wrapper_argv != NULL) |
245 | { | |
246 | int i, count = 1; | |
247 | ||
248 | for (i = 0; wrapper_argv[i] != NULL; i++) | |
249 | count++; | |
250 | for (i = 0; argv[i] != NULL; i++) | |
251 | count++; | |
8d749320 | 252 | new_argv = XALLOCAVEC (char *, count); |
ccd213ac DJ |
253 | count = 0; |
254 | for (i = 0; wrapper_argv[i] != NULL; i++) | |
255 | new_argv[count++] = wrapper_argv[i]; | |
256 | for (i = 0; argv[i] != NULL; i++) | |
257 | new_argv[count++] = argv[i]; | |
258 | new_argv[count] = NULL; | |
259 | } | |
260 | ||
65730243 DE |
261 | if (debug_threads) |
262 | { | |
263 | int i; | |
264 | for (i = 0; new_argv[i]; ++i) | |
87ce2a04 DE |
265 | debug_printf ("new_argv[%d] = \"%s\"\n", i, new_argv[i]); |
266 | debug_flush (); | |
65730243 DE |
267 | } |
268 | ||
b80864fb | 269 | #ifdef SIGTTOU |
a9fa9f7d DJ |
270 | signal (SIGTTOU, SIG_DFL); |
271 | signal (SIGTTIN, SIG_DFL); | |
b80864fb | 272 | #endif |
a9fa9f7d | 273 | |
ccd213ac | 274 | signal_pid = create_inferior (new_argv[0], new_argv); |
0d62e5e8 | 275 | |
c588c53c MS |
276 | /* FIXME: we don't actually know at this point that the create |
277 | actually succeeded. We won't know that until we wait. */ | |
a1928bad | 278 | fprintf (stderr, "Process %s created; pid = %ld\n", argv[0], |
a9fa9f7d | 279 | signal_pid); |
b80864fb | 280 | fflush (stderr); |
a9fa9f7d | 281 | |
b80864fb | 282 | #ifdef SIGTTOU |
a9fa9f7d DJ |
283 | signal (SIGTTOU, SIG_IGN); |
284 | signal (SIGTTIN, SIG_IGN); | |
290fadea RS |
285 | terminal_fd = fileno (stderr); |
286 | old_foreground_pgrp = tcgetpgrp (terminal_fd); | |
287 | tcsetpgrp (terminal_fd, signal_pid); | |
288 | atexit (restore_old_foreground_pgrp); | |
b80864fb | 289 | #endif |
c906108c | 290 | |
ccd213ac DJ |
291 | if (wrapper_argv != NULL) |
292 | { | |
049a8570 | 293 | ptid_t ptid = pid_to_ptid (signal_pid); |
ccd213ac | 294 | |
06db92f0 | 295 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
bd99dc85 | 296 | |
eb97750b | 297 | if (last_status.kind == TARGET_WAITKIND_STOPPED) |
ccd213ac | 298 | { |
eb97750b YQ |
299 | do |
300 | { | |
049a8570 | 301 | target_continue_no_signal (ptid); |
eb97750b YQ |
302 | |
303 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); | |
304 | if (last_status.kind != TARGET_WAITKIND_STOPPED) | |
305 | break; | |
306 | ||
307 | current_thread->last_resume_kind = resume_stop; | |
308 | current_thread->last_status = last_status; | |
309 | } | |
310 | while (last_status.value.sig != GDB_SIGNAL_TRAP); | |
ccd213ac | 311 | } |
ece66d65 | 312 | target_post_create_inferior (); |
5b1c542e | 313 | return signal_pid; |
ccd213ac DJ |
314 | } |
315 | ||
5b1c542e PA |
316 | /* Wait till we are at 1st instruction in program, return new pid |
317 | (assuming success). */ | |
95954743 | 318 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
5b1c542e | 319 | |
1d8cb77d | 320 | /* At this point, the target process, if it exits, is stopped. Do not call |
7313bced CL |
321 | the function target_post_create_inferior if the process has already |
322 | exited, as the target implementation of the routine may rely on the | |
323 | process being live. */ | |
d20a8ad9 PA |
324 | if (last_status.kind != TARGET_WAITKIND_EXITED |
325 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
326 | { | |
7313bced | 327 | target_post_create_inferior (); |
0bfdf32f GB |
328 | current_thread->last_resume_kind = resume_stop; |
329 | current_thread->last_status = last_status; | |
d20a8ad9 | 330 | } |
80ad801e | 331 | else |
bc1e6c81 | 332 | target_mourn_inferior (last_ptid); |
d20a8ad9 | 333 | |
5b1c542e | 334 | return signal_pid; |
c906108c SS |
335 | } |
336 | ||
45b7b345 | 337 | static int |
5b1c542e | 338 | attach_inferior (int pid) |
45b7b345 DJ |
339 | { |
340 | /* myattach should return -1 if attaching is unsupported, | |
341 | 0 if it succeeded, and call error() otherwise. */ | |
a9fa9f7d | 342 | |
45b7b345 DJ |
343 | if (myattach (pid) != 0) |
344 | return -1; | |
345 | ||
6910d122 | 346 | fprintf (stderr, "Attached; pid = %d\n", pid); |
b80864fb | 347 | fflush (stderr); |
6910d122 | 348 | |
a9fa9f7d DJ |
349 | /* FIXME - It may be that we should get the SIGNAL_PID from the |
350 | attach function, so that it can be the main thread instead of | |
351 | whichever we were told to attach to. */ | |
352 | signal_pid = pid; | |
353 | ||
bd99dc85 PA |
354 | if (!non_stop) |
355 | { | |
95954743 | 356 | last_ptid = mywait (pid_to_ptid (pid), &last_status, 0, 0); |
bd99dc85 PA |
357 | |
358 | /* GDB knows to ignore the first SIGSTOP after attaching to a running | |
359 | process using the "attach" command, but this is different; it's | |
360 | just using "target remote". Pretend it's just starting up. */ | |
361 | if (last_status.kind == TARGET_WAITKIND_STOPPED | |
a493e3e2 PA |
362 | && last_status.value.sig == GDB_SIGNAL_STOP) |
363 | last_status.value.sig = GDB_SIGNAL_TRAP; | |
d20a8ad9 | 364 | |
0bfdf32f GB |
365 | current_thread->last_resume_kind = resume_stop; |
366 | current_thread->last_status = last_status; | |
bd99dc85 | 367 | } |
9db87ebd | 368 | |
45b7b345 DJ |
369 | return 0; |
370 | } | |
371 | ||
c906108c | 372 | extern int remote_debug; |
ce3a066d | 373 | |
0876f84a DJ |
374 | /* Decode a qXfer read request. Return 0 if everything looks OK, |
375 | or -1 otherwise. */ | |
376 | ||
377 | static int | |
d08aafef | 378 | decode_xfer_read (char *buf, CORE_ADDR *ofs, unsigned int *len) |
0876f84a | 379 | { |
d08aafef PA |
380 | /* After the read marker and annex, qXfer looks like a |
381 | traditional 'm' packet. */ | |
382 | decode_m_packet (buf, ofs, len); | |
383 | ||
384 | return 0; | |
385 | } | |
386 | ||
387 | static int | |
388 | decode_xfer (char *buf, char **object, char **rw, char **annex, char **offset) | |
389 | { | |
390 | /* Extract and NUL-terminate the object. */ | |
391 | *object = buf; | |
392 | while (*buf && *buf != ':') | |
393 | buf++; | |
394 | if (*buf == '\0') | |
395 | return -1; | |
396 | *buf++ = 0; | |
397 | ||
398 | /* Extract and NUL-terminate the read/write action. */ | |
399 | *rw = buf; | |
400 | while (*buf && *buf != ':') | |
401 | buf++; | |
402 | if (*buf == '\0') | |
403 | return -1; | |
404 | *buf++ = 0; | |
405 | ||
0876f84a DJ |
406 | /* Extract and NUL-terminate the annex. */ |
407 | *annex = buf; | |
408 | while (*buf && *buf != ':') | |
409 | buf++; | |
410 | if (*buf == '\0') | |
411 | return -1; | |
412 | *buf++ = 0; | |
413 | ||
d08aafef | 414 | *offset = buf; |
0876f84a DJ |
415 | return 0; |
416 | } | |
417 | ||
418 | /* Write the response to a successful qXfer read. Returns the | |
419 | length of the (binary) data stored in BUF, corresponding | |
420 | to as much of DATA/LEN as we could fit. IS_MORE controls | |
421 | the first character of the response. */ | |
422 | static int | |
f98cd059 | 423 | write_qxfer_response (char *buf, const gdb_byte *data, int len, int is_more) |
0876f84a DJ |
424 | { |
425 | int out_len; | |
426 | ||
427 | if (is_more) | |
428 | buf[0] = 'm'; | |
429 | else | |
430 | buf[0] = 'l'; | |
431 | ||
124e13d9 SM |
432 | return remote_escape_output (data, len, 1, (unsigned char *) buf + 1, |
433 | &out_len, PBUFSIZ - 2) + 1; | |
0876f84a DJ |
434 | } |
435 | ||
f4abbc16 | 436 | /* Handle btrace enabling in BTS format. */ |
9accd112 MM |
437 | |
438 | static const char * | |
f4abbc16 | 439 | handle_btrace_enable_bts (struct thread_info *thread) |
9accd112 MM |
440 | { |
441 | if (thread->btrace != NULL) | |
442 | return "E.Btrace already enabled."; | |
443 | ||
f4abbc16 MM |
444 | current_btrace_conf.format = BTRACE_FORMAT_BTS; |
445 | thread->btrace = target_enable_btrace (thread->entry.id, | |
446 | ¤t_btrace_conf); | |
9accd112 MM |
447 | if (thread->btrace == NULL) |
448 | return "E.Could not enable btrace."; | |
449 | ||
450 | return NULL; | |
451 | } | |
452 | ||
bc504a31 | 453 | /* Handle btrace enabling in Intel Processor Trace format. */ |
b20a6524 MM |
454 | |
455 | static const char * | |
456 | handle_btrace_enable_pt (struct thread_info *thread) | |
457 | { | |
458 | if (thread->btrace != NULL) | |
459 | return "E.Btrace already enabled."; | |
460 | ||
461 | current_btrace_conf.format = BTRACE_FORMAT_PT; | |
462 | thread->btrace = target_enable_btrace (thread->entry.id, | |
463 | ¤t_btrace_conf); | |
464 | if (thread->btrace == NULL) | |
465 | return "E.Could not enable btrace."; | |
466 | ||
467 | return NULL; | |
468 | } | |
469 | ||
9accd112 MM |
470 | /* Handle btrace disabling. */ |
471 | ||
472 | static const char * | |
473 | handle_btrace_disable (struct thread_info *thread) | |
474 | { | |
475 | ||
476 | if (thread->btrace == NULL) | |
477 | return "E.Branch tracing not enabled."; | |
478 | ||
479 | if (target_disable_btrace (thread->btrace) != 0) | |
480 | return "E.Could not disable branch tracing."; | |
481 | ||
482 | thread->btrace = NULL; | |
483 | return NULL; | |
484 | } | |
485 | ||
486 | /* Handle the "Qbtrace" packet. */ | |
487 | ||
488 | static int | |
489 | handle_btrace_general_set (char *own_buf) | |
490 | { | |
491 | struct thread_info *thread; | |
492 | const char *err; | |
493 | char *op; | |
494 | ||
61012eef | 495 | if (!startswith (own_buf, "Qbtrace:")) |
9accd112 MM |
496 | return 0; |
497 | ||
498 | op = own_buf + strlen ("Qbtrace:"); | |
499 | ||
9accd112 MM |
500 | if (ptid_equal (general_thread, null_ptid) |
501 | || ptid_equal (general_thread, minus_one_ptid)) | |
502 | { | |
503 | strcpy (own_buf, "E.Must select a single thread."); | |
504 | return -1; | |
505 | } | |
506 | ||
507 | thread = find_thread_ptid (general_thread); | |
508 | if (thread == NULL) | |
509 | { | |
510 | strcpy (own_buf, "E.No such thread."); | |
511 | return -1; | |
512 | } | |
513 | ||
514 | err = NULL; | |
515 | ||
516 | if (strcmp (op, "bts") == 0) | |
f4abbc16 | 517 | err = handle_btrace_enable_bts (thread); |
b20a6524 MM |
518 | else if (strcmp (op, "pt") == 0) |
519 | err = handle_btrace_enable_pt (thread); | |
9accd112 MM |
520 | else if (strcmp (op, "off") == 0) |
521 | err = handle_btrace_disable (thread); | |
522 | else | |
b20a6524 | 523 | err = "E.Bad Qbtrace operation. Use bts, pt, or off."; |
9accd112 MM |
524 | |
525 | if (err != 0) | |
526 | strcpy (own_buf, err); | |
527 | else | |
528 | write_ok (own_buf); | |
529 | ||
530 | return 1; | |
531 | } | |
532 | ||
d33501a5 MM |
533 | /* Handle the "Qbtrace-conf" packet. */ |
534 | ||
535 | static int | |
536 | handle_btrace_conf_general_set (char *own_buf) | |
537 | { | |
538 | struct thread_info *thread; | |
539 | char *op; | |
540 | ||
61012eef | 541 | if (!startswith (own_buf, "Qbtrace-conf:")) |
d33501a5 MM |
542 | return 0; |
543 | ||
544 | op = own_buf + strlen ("Qbtrace-conf:"); | |
545 | ||
546 | if (ptid_equal (general_thread, null_ptid) | |
547 | || ptid_equal (general_thread, minus_one_ptid)) | |
548 | { | |
549 | strcpy (own_buf, "E.Must select a single thread."); | |
550 | return -1; | |
551 | } | |
552 | ||
553 | thread = find_thread_ptid (general_thread); | |
554 | if (thread == NULL) | |
555 | { | |
556 | strcpy (own_buf, "E.No such thread."); | |
557 | return -1; | |
558 | } | |
559 | ||
61012eef | 560 | if (startswith (op, "bts:size=")) |
d33501a5 MM |
561 | { |
562 | unsigned long size; | |
563 | char *endp = NULL; | |
564 | ||
565 | errno = 0; | |
566 | size = strtoul (op + strlen ("bts:size="), &endp, 16); | |
567 | if (endp == NULL || *endp != 0 || errno != 0 || size > UINT_MAX) | |
568 | { | |
569 | strcpy (own_buf, "E.Bad size value."); | |
570 | return -1; | |
571 | } | |
572 | ||
573 | current_btrace_conf.bts.size = (unsigned int) size; | |
574 | } | |
b20a6524 MM |
575 | else if (strncmp (op, "pt:size=", strlen ("pt:size=")) == 0) |
576 | { | |
577 | unsigned long size; | |
578 | char *endp = NULL; | |
579 | ||
580 | errno = 0; | |
581 | size = strtoul (op + strlen ("pt:size="), &endp, 16); | |
582 | if (endp == NULL || *endp != 0 || errno != 0 || size > UINT_MAX) | |
583 | { | |
584 | strcpy (own_buf, "E.Bad size value."); | |
585 | return -1; | |
586 | } | |
587 | ||
588 | current_btrace_conf.pt.size = (unsigned int) size; | |
589 | } | |
d33501a5 MM |
590 | else |
591 | { | |
592 | strcpy (own_buf, "E.Bad Qbtrace configuration option."); | |
593 | return -1; | |
594 | } | |
595 | ||
596 | write_ok (own_buf); | |
597 | return 1; | |
598 | } | |
599 | ||
89be2091 | 600 | /* Handle all of the extended 'Q' packets. */ |
ae1ada35 DE |
601 | |
602 | static void | |
89be2091 DJ |
603 | handle_general_set (char *own_buf) |
604 | { | |
61012eef | 605 | if (startswith (own_buf, "QPassSignals:")) |
89be2091 | 606 | { |
a493e3e2 | 607 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
89be2091 DJ |
608 | const char *p = own_buf + strlen ("QPassSignals:"); |
609 | CORE_ADDR cursig; | |
610 | ||
611 | p = decode_address_to_semicolon (&cursig, p); | |
612 | for (i = 0; i < numsigs; i++) | |
613 | { | |
614 | if (i == cursig) | |
615 | { | |
616 | pass_signals[i] = 1; | |
617 | if (*p == '\0') | |
618 | /* Keep looping, to clear the remaining signals. */ | |
619 | cursig = -1; | |
620 | else | |
621 | p = decode_address_to_semicolon (&cursig, p); | |
622 | } | |
623 | else | |
624 | pass_signals[i] = 0; | |
625 | } | |
626 | strcpy (own_buf, "OK"); | |
627 | return; | |
628 | } | |
629 | ||
61012eef | 630 | if (startswith (own_buf, "QProgramSignals:")) |
9b224c5e | 631 | { |
a493e3e2 | 632 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
9b224c5e PA |
633 | const char *p = own_buf + strlen ("QProgramSignals:"); |
634 | CORE_ADDR cursig; | |
635 | ||
636 | program_signals_p = 1; | |
637 | ||
638 | p = decode_address_to_semicolon (&cursig, p); | |
639 | for (i = 0; i < numsigs; i++) | |
640 | { | |
641 | if (i == cursig) | |
642 | { | |
643 | program_signals[i] = 1; | |
644 | if (*p == '\0') | |
645 | /* Keep looping, to clear the remaining signals. */ | |
646 | cursig = -1; | |
647 | else | |
648 | p = decode_address_to_semicolon (&cursig, p); | |
649 | } | |
650 | else | |
651 | program_signals[i] = 0; | |
652 | } | |
653 | strcpy (own_buf, "OK"); | |
654 | return; | |
655 | } | |
656 | ||
82075af2 JS |
657 | if (startswith (own_buf, "QCatchSyscalls:")) |
658 | { | |
659 | const char *p = own_buf + sizeof ("QCatchSyscalls:") - 1; | |
660 | int enabled = -1; | |
661 | CORE_ADDR sysno; | |
662 | struct process_info *process; | |
663 | ||
664 | if (!target_running () || !target_supports_catch_syscall ()) | |
665 | { | |
666 | write_enn (own_buf); | |
667 | return; | |
668 | } | |
669 | ||
670 | if (strcmp (p, "0") == 0) | |
671 | enabled = 0; | |
672 | else if (p[0] == '1' && (p[1] == ';' || p[1] == '\0')) | |
673 | enabled = 1; | |
674 | else | |
675 | { | |
676 | fprintf (stderr, "Unknown catch-syscalls mode requested: %s\n", | |
677 | own_buf); | |
678 | write_enn (own_buf); | |
679 | return; | |
680 | } | |
681 | ||
682 | process = current_process (); | |
683 | VEC_truncate (int, process->syscalls_to_catch, 0); | |
684 | ||
685 | if (enabled) | |
686 | { | |
687 | p += 1; | |
688 | if (*p == ';') | |
689 | { | |
690 | p += 1; | |
691 | while (*p != '\0') | |
692 | { | |
693 | p = decode_address_to_semicolon (&sysno, p); | |
694 | VEC_safe_push (int, process->syscalls_to_catch, (int) sysno); | |
695 | } | |
696 | } | |
697 | else | |
698 | VEC_safe_push (int, process->syscalls_to_catch, ANY_SYSCALL); | |
699 | } | |
700 | ||
701 | write_ok (own_buf); | |
702 | return; | |
703 | } | |
704 | ||
a6f3e723 SL |
705 | if (strcmp (own_buf, "QStartNoAckMode") == 0) |
706 | { | |
707 | if (remote_debug) | |
708 | { | |
709 | fprintf (stderr, "[noack mode enabled]\n"); | |
710 | fflush (stderr); | |
711 | } | |
712 | ||
713 | noack_mode = 1; | |
714 | write_ok (own_buf); | |
715 | return; | |
716 | } | |
717 | ||
61012eef | 718 | if (startswith (own_buf, "QNonStop:")) |
bd99dc85 PA |
719 | { |
720 | char *mode = own_buf + 9; | |
721 | int req = -1; | |
b2333d22 | 722 | const char *req_str; |
bd99dc85 PA |
723 | |
724 | if (strcmp (mode, "0") == 0) | |
725 | req = 0; | |
726 | else if (strcmp (mode, "1") == 0) | |
727 | req = 1; | |
728 | else | |
729 | { | |
730 | /* We don't know what this mode is, so complain to | |
731 | GDB. */ | |
732 | fprintf (stderr, "Unknown non-stop mode requested: %s\n", | |
733 | own_buf); | |
734 | write_enn (own_buf); | |
735 | return; | |
736 | } | |
737 | ||
738 | req_str = req ? "non-stop" : "all-stop"; | |
739 | if (start_non_stop (req) != 0) | |
740 | { | |
741 | fprintf (stderr, "Setting %s mode failed\n", req_str); | |
742 | write_enn (own_buf); | |
743 | return; | |
744 | } | |
745 | ||
746 | non_stop = req; | |
747 | ||
748 | if (remote_debug) | |
749 | fprintf (stderr, "[%s mode enabled]\n", req_str); | |
750 | ||
751 | write_ok (own_buf); | |
752 | return; | |
753 | } | |
754 | ||
61012eef | 755 | if (startswith (own_buf, "QDisableRandomization:")) |
03583c20 UW |
756 | { |
757 | char *packet = own_buf + strlen ("QDisableRandomization:"); | |
758 | ULONGEST setting; | |
759 | ||
760 | unpack_varlen_hex (packet, &setting); | |
761 | disable_randomization = setting; | |
762 | ||
763 | if (remote_debug) | |
764 | { | |
765 | if (disable_randomization) | |
766 | fprintf (stderr, "[address space randomization disabled]\n"); | |
767 | else | |
768 | fprintf (stderr, "[address space randomization enabled]\n"); | |
769 | } | |
770 | ||
771 | write_ok (own_buf); | |
772 | return; | |
773 | } | |
774 | ||
219f2f23 PA |
775 | if (target_supports_tracepoints () |
776 | && handle_tracepoint_general_set (own_buf)) | |
777 | return; | |
778 | ||
61012eef | 779 | if (startswith (own_buf, "QAgent:")) |
d1feda86 YQ |
780 | { |
781 | char *mode = own_buf + strlen ("QAgent:"); | |
782 | int req = 0; | |
783 | ||
784 | if (strcmp (mode, "0") == 0) | |
785 | req = 0; | |
786 | else if (strcmp (mode, "1") == 0) | |
787 | req = 1; | |
788 | else | |
789 | { | |
790 | /* We don't know what this value is, so complain to GDB. */ | |
791 | sprintf (own_buf, "E.Unknown QAgent value"); | |
792 | return; | |
793 | } | |
794 | ||
795 | /* Update the flag. */ | |
796 | use_agent = req; | |
797 | if (remote_debug) | |
798 | fprintf (stderr, "[%s agent]\n", req ? "Enable" : "Disable"); | |
799 | write_ok (own_buf); | |
800 | return; | |
801 | } | |
802 | ||
9accd112 MM |
803 | if (handle_btrace_general_set (own_buf)) |
804 | return; | |
805 | ||
d33501a5 MM |
806 | if (handle_btrace_conf_general_set (own_buf)) |
807 | return; | |
808 | ||
65706a29 PA |
809 | if (startswith (own_buf, "QThreadEvents:")) |
810 | { | |
811 | char *mode = own_buf + strlen ("QThreadEvents:"); | |
812 | enum tribool req = TRIBOOL_UNKNOWN; | |
813 | ||
814 | if (strcmp (mode, "0") == 0) | |
815 | req = TRIBOOL_FALSE; | |
816 | else if (strcmp (mode, "1") == 0) | |
817 | req = TRIBOOL_TRUE; | |
818 | else | |
819 | { | |
820 | char *mode_copy = xstrdup (mode); | |
821 | ||
822 | /* We don't know what this mode is, so complain to GDB. */ | |
823 | sprintf (own_buf, "E.Unknown thread-events mode requested: %s\n", | |
824 | mode_copy); | |
825 | xfree (mode_copy); | |
826 | return; | |
827 | } | |
828 | ||
829 | report_thread_events = (req == TRIBOOL_TRUE); | |
830 | ||
831 | if (remote_debug) | |
832 | { | |
833 | const char *req_str = report_thread_events ? "enabled" : "disabled"; | |
834 | ||
835 | fprintf (stderr, "[thread events are now %s]\n", req_str); | |
836 | } | |
837 | ||
838 | write_ok (own_buf); | |
839 | return; | |
840 | } | |
841 | ||
89be2091 DJ |
842 | /* Otherwise we didn't know what packet it was. Say we didn't |
843 | understand it. */ | |
844 | own_buf[0] = 0; | |
845 | } | |
846 | ||
23181151 | 847 | static const char * |
fb1e4ffc | 848 | get_features_xml (const char *annex) |
23181151 | 849 | { |
3aee8918 PA |
850 | const struct target_desc *desc = current_target_desc (); |
851 | ||
852 | /* `desc->xmltarget' defines what to return when looking for the | |
853 | "target.xml" file. Its contents can either be verbatim XML code | |
854 | (prefixed with a '@') or else the name of the actual XML file to | |
855 | be used in place of "target.xml". | |
fb1e4ffc | 856 | |
9b4b61c8 UW |
857 | This variable is set up from the auto-generated |
858 | init_registers_... routine for the current target. */ | |
fb1e4ffc | 859 | |
3aee8918 | 860 | if (desc->xmltarget != NULL && strcmp (annex, "target.xml") == 0) |
23181151 | 861 | { |
3aee8918 PA |
862 | if (*desc->xmltarget == '@') |
863 | return desc->xmltarget + 1; | |
23181151 | 864 | else |
3aee8918 | 865 | annex = desc->xmltarget; |
23181151 DJ |
866 | } |
867 | ||
9b4b61c8 UW |
868 | #ifdef USE_XML |
869 | { | |
870 | extern const char *const xml_builtin[][2]; | |
871 | int i; | |
872 | ||
873 | /* Look for the annex. */ | |
874 | for (i = 0; xml_builtin[i][0] != NULL; i++) | |
875 | if (strcmp (annex, xml_builtin[i][0]) == 0) | |
876 | break; | |
877 | ||
878 | if (xml_builtin[i][0] != NULL) | |
879 | return xml_builtin[i][1]; | |
880 | } | |
881 | #endif | |
882 | ||
883 | return NULL; | |
23181151 DJ |
884 | } |
885 | ||
5b3da067 | 886 | static void |
c74d0ad8 DJ |
887 | monitor_show_help (void) |
888 | { | |
889 | monitor_output ("The following monitor commands are supported:\n"); | |
890 | monitor_output (" set debug <0|1>\n"); | |
1b3f6016 | 891 | monitor_output (" Enable general debugging messages\n"); |
aa5ca48f DE |
892 | monitor_output (" set debug-hw-points <0|1>\n"); |
893 | monitor_output (" Enable h/w breakpoint/watchpoint debugging messages\n"); | |
c74d0ad8 DJ |
894 | monitor_output (" set remote-debug <0|1>\n"); |
895 | monitor_output (" Enable remote protocol debugging messages\n"); | |
87ce2a04 DE |
896 | monitor_output (" set debug-format option1[,option2,...]\n"); |
897 | monitor_output (" Add additional information to debugging messages\n"); | |
898 | monitor_output (" Options: all, none"); | |
87ce2a04 | 899 | monitor_output (", timestamp"); |
87ce2a04 | 900 | monitor_output ("\n"); |
ecd7ecbc DJ |
901 | monitor_output (" exit\n"); |
902 | monitor_output (" Quit GDBserver\n"); | |
c74d0ad8 DJ |
903 | } |
904 | ||
764880b7 PA |
905 | /* Read trace frame or inferior memory. Returns the number of bytes |
906 | actually read, zero when no further transfer is possible, and -1 on | |
907 | error. Return of a positive value smaller than LEN does not | |
908 | indicate there's no more to be read, only the end of the transfer. | |
909 | E.g., when GDB reads memory from a traceframe, a first request may | |
910 | be served from a memory block that does not cover the whole request | |
911 | length. A following request gets the rest served from either | |
912 | another block (of the same traceframe) or from the read-only | |
913 | regions. */ | |
219f2f23 PA |
914 | |
915 | static int | |
90d74c30 | 916 | gdb_read_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) |
219f2f23 | 917 | { |
764880b7 | 918 | int res; |
90d74c30 | 919 | |
219f2f23 PA |
920 | if (current_traceframe >= 0) |
921 | { | |
922 | ULONGEST nbytes; | |
923 | ULONGEST length = len; | |
924 | ||
925 | if (traceframe_read_mem (current_traceframe, | |
926 | memaddr, myaddr, len, &nbytes)) | |
9a13b2fa | 927 | return -1; |
219f2f23 | 928 | /* Data read from trace buffer, we're done. */ |
764880b7 PA |
929 | if (nbytes > 0) |
930 | return nbytes; | |
219f2f23 | 931 | if (!in_readonly_region (memaddr, length)) |
764880b7 | 932 | return -1; |
219f2f23 PA |
933 | /* Otherwise we have a valid readonly case, fall through. */ |
934 | /* (assume no half-trace half-real blocks for now) */ | |
935 | } | |
936 | ||
764880b7 PA |
937 | res = prepare_to_access_memory (); |
938 | if (res == 0) | |
90d74c30 | 939 | { |
f0db101d PA |
940 | if (set_desired_thread (1)) |
941 | res = read_inferior_memory (memaddr, myaddr, len); | |
942 | else | |
943 | res = 1; | |
0146f85b | 944 | done_accessing_memory (); |
90d74c30 | 945 | |
764880b7 PA |
946 | return res == 0 ? len : -1; |
947 | } | |
948 | else | |
949 | return -1; | |
219f2f23 PA |
950 | } |
951 | ||
952 | /* Write trace frame or inferior memory. Actually, writing to trace | |
953 | frames is forbidden. */ | |
954 | ||
955 | static int | |
90d74c30 | 956 | gdb_write_memory (CORE_ADDR memaddr, const unsigned char *myaddr, int len) |
219f2f23 PA |
957 | { |
958 | if (current_traceframe >= 0) | |
959 | return EIO; | |
960 | else | |
90d74c30 PA |
961 | { |
962 | int ret; | |
963 | ||
964 | ret = prepare_to_access_memory (); | |
965 | if (ret == 0) | |
966 | { | |
f0db101d PA |
967 | if (set_desired_thread (1)) |
968 | ret = write_inferior_memory (memaddr, myaddr, len); | |
969 | else | |
970 | ret = EIO; | |
0146f85b | 971 | done_accessing_memory (); |
90d74c30 PA |
972 | } |
973 | return ret; | |
974 | } | |
219f2f23 PA |
975 | } |
976 | ||
08388c79 DE |
977 | /* Subroutine of handle_search_memory to simplify it. */ |
978 | ||
979 | static int | |
980 | handle_search_memory_1 (CORE_ADDR start_addr, CORE_ADDR search_space_len, | |
981 | gdb_byte *pattern, unsigned pattern_len, | |
982 | gdb_byte *search_buf, | |
983 | unsigned chunk_size, unsigned search_buf_size, | |
984 | CORE_ADDR *found_addrp) | |
985 | { | |
986 | /* Prime the search buffer. */ | |
987 | ||
764880b7 PA |
988 | if (gdb_read_memory (start_addr, search_buf, search_buf_size) |
989 | != search_buf_size) | |
08388c79 | 990 | { |
b3dc46ff AB |
991 | warning ("Unable to access %ld bytes of target " |
992 | "memory at 0x%lx, halting search.", | |
993 | (long) search_buf_size, (long) start_addr); | |
08388c79 DE |
994 | return -1; |
995 | } | |
996 | ||
997 | /* Perform the search. | |
998 | ||
999 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
1000 | When we've scanned N bytes we copy the trailing bytes to the start and | |
1001 | read in another N bytes. */ | |
1002 | ||
1003 | while (search_space_len >= pattern_len) | |
1004 | { | |
1005 | gdb_byte *found_ptr; | |
1006 | unsigned nr_search_bytes = (search_space_len < search_buf_size | |
1007 | ? search_space_len | |
1008 | : search_buf_size); | |
1009 | ||
d6f85c84 SM |
1010 | found_ptr = (gdb_byte *) memmem (search_buf, nr_search_bytes, pattern, |
1011 | pattern_len); | |
08388c79 DE |
1012 | |
1013 | if (found_ptr != NULL) | |
1014 | { | |
1015 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
1016 | *found_addrp = found_addr; | |
1017 | return 1; | |
1018 | } | |
1019 | ||
1020 | /* Not found in this chunk, skip to next chunk. */ | |
1021 | ||
1022 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
1023 | if (search_space_len >= chunk_size) | |
1024 | search_space_len -= chunk_size; | |
1025 | else | |
1026 | search_space_len = 0; | |
1027 | ||
1028 | if (search_space_len >= pattern_len) | |
1029 | { | |
1030 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 1031 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
1032 | int nr_to_read; |
1033 | ||
1034 | /* Copy the trailing part of the previous iteration to the front | |
1035 | of the buffer for the next iteration. */ | |
1036 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
1037 | ||
1038 | nr_to_read = (search_space_len - keep_len < chunk_size | |
1039 | ? search_space_len - keep_len | |
1040 | : chunk_size); | |
1041 | ||
90d74c30 | 1042 | if (gdb_read_memory (read_addr, search_buf + keep_len, |
764880b7 | 1043 | nr_to_read) != search_buf_size) |
08388c79 | 1044 | { |
b3dc46ff | 1045 | warning ("Unable to access %ld bytes of target memory " |
493e2a69 | 1046 | "at 0x%lx, halting search.", |
b3dc46ff | 1047 | (long) nr_to_read, (long) read_addr); |
08388c79 DE |
1048 | return -1; |
1049 | } | |
1050 | ||
1051 | start_addr += chunk_size; | |
1052 | } | |
1053 | } | |
1054 | ||
1055 | /* Not found. */ | |
1056 | ||
1057 | return 0; | |
1058 | } | |
1059 | ||
1060 | /* Handle qSearch:memory packets. */ | |
1061 | ||
1062 | static void | |
1063 | handle_search_memory (char *own_buf, int packet_len) | |
1064 | { | |
1065 | CORE_ADDR start_addr; | |
1066 | CORE_ADDR search_space_len; | |
1067 | gdb_byte *pattern; | |
1068 | unsigned int pattern_len; | |
1069 | /* NOTE: also defined in find.c testcase. */ | |
1070 | #define SEARCH_CHUNK_SIZE 16000 | |
1071 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
1072 | /* Buffer to hold memory contents for searching. */ | |
1073 | gdb_byte *search_buf; | |
1074 | unsigned search_buf_size; | |
1075 | int found; | |
1076 | CORE_ADDR found_addr; | |
1077 | int cmd_name_len = sizeof ("qSearch:memory:") - 1; | |
1078 | ||
224c3ddb | 1079 | pattern = (gdb_byte *) malloc (packet_len); |
08388c79 DE |
1080 | if (pattern == NULL) |
1081 | { | |
5e1471f5 | 1082 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
1083 | strcpy (own_buf, "E00"); |
1084 | return; | |
1085 | } | |
1086 | if (decode_search_memory_packet (own_buf + cmd_name_len, | |
1087 | packet_len - cmd_name_len, | |
1088 | &start_addr, &search_space_len, | |
1089 | pattern, &pattern_len) < 0) | |
1090 | { | |
1091 | free (pattern); | |
5e1471f5 | 1092 | error ("Error in parsing qSearch:memory packet"); |
08388c79 DE |
1093 | strcpy (own_buf, "E00"); |
1094 | return; | |
1095 | } | |
1096 | ||
1097 | search_buf_size = chunk_size + pattern_len - 1; | |
1098 | ||
1099 | /* No point in trying to allocate a buffer larger than the search space. */ | |
1100 | if (search_space_len < search_buf_size) | |
1101 | search_buf_size = search_space_len; | |
1102 | ||
224c3ddb | 1103 | search_buf = (gdb_byte *) malloc (search_buf_size); |
08388c79 DE |
1104 | if (search_buf == NULL) |
1105 | { | |
1106 | free (pattern); | |
5e1471f5 | 1107 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
1108 | strcpy (own_buf, "E00"); |
1109 | return; | |
1110 | } | |
1111 | ||
1112 | found = handle_search_memory_1 (start_addr, search_space_len, | |
1113 | pattern, pattern_len, | |
1114 | search_buf, chunk_size, search_buf_size, | |
1115 | &found_addr); | |
1116 | ||
1117 | if (found > 0) | |
1118 | sprintf (own_buf, "1,%lx", (long) found_addr); | |
1119 | else if (found == 0) | |
1120 | strcpy (own_buf, "0"); | |
1121 | else | |
1122 | strcpy (own_buf, "E00"); | |
1123 | ||
1124 | free (search_buf); | |
1125 | free (pattern); | |
1126 | } | |
1127 | ||
2d717e4f DJ |
1128 | #define require_running(BUF) \ |
1129 | if (!target_running ()) \ | |
1130 | { \ | |
1131 | write_enn (BUF); \ | |
1132 | return; \ | |
1133 | } | |
1134 | ||
87ce2a04 DE |
1135 | /* Parse options to --debug-format= and "monitor set debug-format". |
1136 | ARG is the text after "--debug-format=" or "monitor set debug-format". | |
1137 | IS_MONITOR is non-zero if we're invoked via "monitor set debug-format". | |
1138 | This triggers calls to monitor_output. | |
1139 | The result is NULL if all options were parsed ok, otherwise an error | |
1140 | message which the caller must free. | |
1141 | ||
1142 | N.B. These commands affect all debug format settings, they are not | |
1143 | cumulative. If a format is not specified, it is turned off. | |
1144 | However, we don't go to extra trouble with things like | |
1145 | "monitor set debug-format all,none,timestamp". | |
1146 | Instead we just parse them one at a time, in order. | |
1147 | ||
1148 | The syntax for "monitor set debug" we support here is not identical | |
1149 | to gdb's "set debug foo on|off" because we also use this function to | |
1150 | parse "--debug-format=foo,bar". */ | |
1151 | ||
1152 | static char * | |
1153 | parse_debug_format_options (const char *arg, int is_monitor) | |
1154 | { | |
1155 | VEC (char_ptr) *options; | |
1156 | int ix; | |
1157 | char *option; | |
1158 | ||
1159 | /* First turn all debug format options off. */ | |
1160 | debug_timestamp = 0; | |
1161 | ||
1162 | /* First remove leading spaces, for "monitor set debug-format". */ | |
1163 | while (isspace (*arg)) | |
1164 | ++arg; | |
1165 | ||
1166 | options = delim_string_to_char_ptr_vec (arg, ','); | |
1167 | ||
1168 | for (ix = 0; VEC_iterate (char_ptr, options, ix, option); ++ix) | |
1169 | { | |
1170 | if (strcmp (option, "all") == 0) | |
1171 | { | |
1172 | debug_timestamp = 1; | |
1173 | if (is_monitor) | |
1174 | monitor_output ("All extra debug format options enabled.\n"); | |
1175 | } | |
1176 | else if (strcmp (option, "none") == 0) | |
1177 | { | |
1178 | debug_timestamp = 0; | |
1179 | if (is_monitor) | |
1180 | monitor_output ("All extra debug format options disabled.\n"); | |
1181 | } | |
87ce2a04 DE |
1182 | else if (strcmp (option, "timestamp") == 0) |
1183 | { | |
1184 | debug_timestamp = 1; | |
1185 | if (is_monitor) | |
1186 | monitor_output ("Timestamps will be added to debug output.\n"); | |
1187 | } | |
87ce2a04 DE |
1188 | else if (*option == '\0') |
1189 | { | |
1190 | /* An empty option, e.g., "--debug-format=foo,,bar", is ignored. */ | |
1191 | continue; | |
1192 | } | |
1193 | else | |
1194 | { | |
1195 | char *msg = xstrprintf ("Unknown debug-format argument: \"%s\"\n", | |
1196 | option); | |
1197 | ||
1198 | free_char_ptr_vec (options); | |
1199 | return msg; | |
1200 | } | |
1201 | } | |
1202 | ||
1203 | free_char_ptr_vec (options); | |
1204 | return NULL; | |
1205 | } | |
1206 | ||
cdbfd419 PP |
1207 | /* Handle monitor commands not handled by target-specific handlers. */ |
1208 | ||
1209 | static void | |
d73f2619 | 1210 | handle_monitor_command (char *mon, char *own_buf) |
cdbfd419 PP |
1211 | { |
1212 | if (strcmp (mon, "set debug 1") == 0) | |
1213 | { | |
1214 | debug_threads = 1; | |
1215 | monitor_output ("Debug output enabled.\n"); | |
1216 | } | |
1217 | else if (strcmp (mon, "set debug 0") == 0) | |
1218 | { | |
1219 | debug_threads = 0; | |
1220 | monitor_output ("Debug output disabled.\n"); | |
1221 | } | |
1222 | else if (strcmp (mon, "set debug-hw-points 1") == 0) | |
1223 | { | |
c5e92cca | 1224 | show_debug_regs = 1; |
cdbfd419 PP |
1225 | monitor_output ("H/W point debugging output enabled.\n"); |
1226 | } | |
1227 | else if (strcmp (mon, "set debug-hw-points 0") == 0) | |
1228 | { | |
c5e92cca | 1229 | show_debug_regs = 0; |
cdbfd419 PP |
1230 | monitor_output ("H/W point debugging output disabled.\n"); |
1231 | } | |
1232 | else if (strcmp (mon, "set remote-debug 1") == 0) | |
1233 | { | |
1234 | remote_debug = 1; | |
1235 | monitor_output ("Protocol debug output enabled.\n"); | |
1236 | } | |
1237 | else if (strcmp (mon, "set remote-debug 0") == 0) | |
1238 | { | |
1239 | remote_debug = 0; | |
1240 | monitor_output ("Protocol debug output disabled.\n"); | |
1241 | } | |
61012eef | 1242 | else if (startswith (mon, "set debug-format ")) |
87ce2a04 DE |
1243 | { |
1244 | char *error_msg | |
1245 | = parse_debug_format_options (mon + sizeof ("set debug-format ") - 1, | |
1246 | 1); | |
1247 | ||
1248 | if (error_msg != NULL) | |
1249 | { | |
1250 | monitor_output (error_msg); | |
1251 | monitor_show_help (); | |
1252 | write_enn (own_buf); | |
1253 | xfree (error_msg); | |
1254 | } | |
1255 | } | |
cdbfd419 PP |
1256 | else if (strcmp (mon, "help") == 0) |
1257 | monitor_show_help (); | |
1258 | else if (strcmp (mon, "exit") == 0) | |
1259 | exit_requested = 1; | |
1260 | else | |
1261 | { | |
1262 | monitor_output ("Unknown monitor command.\n\n"); | |
1263 | monitor_show_help (); | |
1264 | write_enn (own_buf); | |
1265 | } | |
1266 | } | |
1267 | ||
d08aafef PA |
1268 | /* Associates a callback with each supported qXfer'able object. */ |
1269 | ||
1270 | struct qxfer | |
1271 | { | |
1272 | /* The object this handler handles. */ | |
1273 | const char *object; | |
1274 | ||
1275 | /* Request that the target transfer up to LEN 8-bit bytes of the | |
1276 | target's OBJECT. The OFFSET, for a seekable object, specifies | |
1277 | the starting point. The ANNEX can be used to provide additional | |
1278 | data-specific information to the target. | |
1279 | ||
1280 | Return the number of bytes actually transfered, zero when no | |
5cc22e4c MM |
1281 | further transfer is possible, -1 on error, -2 when the transfer |
1282 | is not supported, and -3 on a verbose error message that should | |
1283 | be preserved. Return of a positive value smaller than LEN does | |
1284 | not indicate the end of the object, only the end of the transfer. | |
d08aafef PA |
1285 | |
1286 | One, and only one, of readbuf or writebuf must be non-NULL. */ | |
1287 | int (*xfer) (const char *annex, | |
1288 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1289 | ULONGEST offset, LONGEST len); | |
1290 | }; | |
1291 | ||
1292 | /* Handle qXfer:auxv:read. */ | |
1293 | ||
1294 | static int | |
1295 | handle_qxfer_auxv (const char *annex, | |
1296 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1297 | ULONGEST offset, LONGEST len) | |
1298 | { | |
1299 | if (the_target->read_auxv == NULL || writebuf != NULL) | |
1300 | return -2; | |
1301 | ||
f0db101d | 1302 | if (annex[0] != '\0' || current_thread == NULL) |
d08aafef PA |
1303 | return -1; |
1304 | ||
1305 | return (*the_target->read_auxv) (offset, readbuf, len); | |
1306 | } | |
1307 | ||
e57f1de3 GB |
1308 | /* Handle qXfer:exec-file:read. */ |
1309 | ||
1310 | static int | |
1311 | handle_qxfer_exec_file (const char *const_annex, | |
1312 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1313 | ULONGEST offset, LONGEST len) | |
1314 | { | |
835205d0 | 1315 | char *file; |
e57f1de3 GB |
1316 | ULONGEST pid; |
1317 | int total_len; | |
1318 | ||
1319 | if (the_target->pid_to_exec_file == NULL || writebuf != NULL) | |
1320 | return -2; | |
1321 | ||
835205d0 GB |
1322 | if (const_annex[0] == '\0') |
1323 | { | |
1324 | if (current_thread == NULL) | |
1325 | return -1; | |
1326 | ||
1327 | pid = pid_of (current_thread); | |
1328 | } | |
1329 | else | |
1330 | { | |
224c3ddb | 1331 | char *annex = (char *) alloca (strlen (const_annex) + 1); |
835205d0 GB |
1332 | |
1333 | strcpy (annex, const_annex); | |
1334 | annex = unpack_varlen_hex (annex, &pid); | |
1335 | ||
1336 | if (annex[0] != '\0') | |
1337 | return -1; | |
1338 | } | |
1339 | ||
1340 | if (pid <= 0) | |
e57f1de3 GB |
1341 | return -1; |
1342 | ||
1343 | file = (*the_target->pid_to_exec_file) (pid); | |
1344 | if (file == NULL) | |
1345 | return -1; | |
1346 | ||
1347 | total_len = strlen (file); | |
1348 | ||
1349 | if (offset > total_len) | |
1350 | return -1; | |
1351 | ||
1352 | if (offset + len > total_len) | |
1353 | len = total_len - offset; | |
1354 | ||
1355 | memcpy (readbuf, file + offset, len); | |
1356 | return len; | |
1357 | } | |
1358 | ||
d08aafef PA |
1359 | /* Handle qXfer:features:read. */ |
1360 | ||
1361 | static int | |
1362 | handle_qxfer_features (const char *annex, | |
1363 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1364 | ULONGEST offset, LONGEST len) | |
1365 | { | |
1366 | const char *document; | |
1367 | size_t total_len; | |
1368 | ||
1369 | if (writebuf != NULL) | |
1370 | return -2; | |
1371 | ||
1372 | if (!target_running ()) | |
1373 | return -1; | |
1374 | ||
1375 | /* Grab the correct annex. */ | |
1376 | document = get_features_xml (annex); | |
1377 | if (document == NULL) | |
1378 | return -1; | |
1379 | ||
1380 | total_len = strlen (document); | |
1381 | ||
1382 | if (offset > total_len) | |
1383 | return -1; | |
1384 | ||
1385 | if (offset + len > total_len) | |
1386 | len = total_len - offset; | |
1387 | ||
1388 | memcpy (readbuf, document + offset, len); | |
1389 | return len; | |
1390 | } | |
1391 | ||
649ebbca DE |
1392 | /* Worker routine for handle_qxfer_libraries. |
1393 | Add to the length pointed to by ARG a conservative estimate of the | |
1394 | length needed to transmit the file name of INF. */ | |
1395 | ||
1396 | static void | |
1397 | accumulate_file_name_length (struct inferior_list_entry *inf, void *arg) | |
1398 | { | |
1399 | struct dll_info *dll = (struct dll_info *) inf; | |
9a3c8263 | 1400 | unsigned int *total_len = (unsigned int *) arg; |
649ebbca DE |
1401 | |
1402 | /* Over-estimate the necessary memory. Assume that every character | |
1403 | in the library name must be escaped. */ | |
1404 | *total_len += 128 + 6 * strlen (dll->name); | |
1405 | } | |
1406 | ||
1407 | /* Worker routine for handle_qxfer_libraries. | |
1408 | Emit the XML to describe the library in INF. */ | |
1409 | ||
1410 | static void | |
1411 | emit_dll_description (struct inferior_list_entry *inf, void *arg) | |
1412 | { | |
1413 | struct dll_info *dll = (struct dll_info *) inf; | |
9a3c8263 | 1414 | char **p_ptr = (char **) arg; |
649ebbca DE |
1415 | char *p = *p_ptr; |
1416 | char *name; | |
1417 | ||
1418 | strcpy (p, " <library name=\""); | |
1419 | p = p + strlen (p); | |
1420 | name = xml_escape_text (dll->name); | |
1421 | strcpy (p, name); | |
1422 | free (name); | |
1423 | p = p + strlen (p); | |
1424 | strcpy (p, "\"><segment address=\""); | |
1425 | p = p + strlen (p); | |
1426 | sprintf (p, "0x%lx", (long) dll->base_addr); | |
1427 | p = p + strlen (p); | |
1428 | strcpy (p, "\"/></library>\n"); | |
1429 | p = p + strlen (p); | |
1430 | ||
1431 | *p_ptr = p; | |
1432 | } | |
1433 | ||
d08aafef PA |
1434 | /* Handle qXfer:libraries:read. */ |
1435 | ||
1436 | static int | |
1437 | handle_qxfer_libraries (const char *annex, | |
1438 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1439 | ULONGEST offset, LONGEST len) | |
1440 | { | |
1441 | unsigned int total_len; | |
1442 | char *document, *p; | |
d08aafef PA |
1443 | |
1444 | if (writebuf != NULL) | |
1445 | return -2; | |
1446 | ||
f0db101d | 1447 | if (annex[0] != '\0' || current_thread == NULL) |
d08aafef PA |
1448 | return -1; |
1449 | ||
d08aafef | 1450 | total_len = 64; |
649ebbca DE |
1451 | for_each_inferior_with_data (&all_dlls, accumulate_file_name_length, |
1452 | &total_len); | |
d08aafef | 1453 | |
224c3ddb | 1454 | document = (char *) malloc (total_len); |
d08aafef PA |
1455 | if (document == NULL) |
1456 | return -1; | |
1457 | ||
24c05f46 | 1458 | strcpy (document, "<library-list version=\"1.0\">\n"); |
d08aafef PA |
1459 | p = document + strlen (document); |
1460 | ||
649ebbca | 1461 | for_each_inferior_with_data (&all_dlls, emit_dll_description, &p); |
d08aafef PA |
1462 | |
1463 | strcpy (p, "</library-list>\n"); | |
1464 | ||
1465 | total_len = strlen (document); | |
1466 | ||
1467 | if (offset > total_len) | |
1468 | { | |
1469 | free (document); | |
1470 | return -1; | |
1471 | } | |
1472 | ||
1473 | if (offset + len > total_len) | |
1474 | len = total_len - offset; | |
1475 | ||
1476 | memcpy (readbuf, document + offset, len); | |
1477 | free (document); | |
1478 | return len; | |
1479 | } | |
1480 | ||
2268b414 JK |
1481 | /* Handle qXfer:libraries-svr4:read. */ |
1482 | ||
1483 | static int | |
1484 | handle_qxfer_libraries_svr4 (const char *annex, | |
1485 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1486 | ULONGEST offset, LONGEST len) | |
1487 | { | |
1488 | if (writebuf != NULL) | |
1489 | return -2; | |
1490 | ||
f0db101d | 1491 | if (current_thread == NULL || the_target->qxfer_libraries_svr4 == NULL) |
2268b414 JK |
1492 | return -1; |
1493 | ||
1494 | return the_target->qxfer_libraries_svr4 (annex, readbuf, writebuf, offset, len); | |
1495 | } | |
1496 | ||
d08aafef PA |
1497 | /* Handle qXfer:osadata:read. */ |
1498 | ||
1499 | static int | |
1500 | handle_qxfer_osdata (const char *annex, | |
1501 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1502 | ULONGEST offset, LONGEST len) | |
1503 | { | |
1504 | if (the_target->qxfer_osdata == NULL || writebuf != NULL) | |
1505 | return -2; | |
1506 | ||
1507 | return (*the_target->qxfer_osdata) (annex, readbuf, NULL, offset, len); | |
1508 | } | |
1509 | ||
1510 | /* Handle qXfer:siginfo:read and qXfer:siginfo:write. */ | |
1511 | ||
1512 | static int | |
1513 | handle_qxfer_siginfo (const char *annex, | |
1514 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1515 | ULONGEST offset, LONGEST len) | |
1516 | { | |
1517 | if (the_target->qxfer_siginfo == NULL) | |
1518 | return -2; | |
1519 | ||
f0db101d | 1520 | if (annex[0] != '\0' || current_thread == NULL) |
d08aafef PA |
1521 | return -1; |
1522 | ||
1523 | return (*the_target->qxfer_siginfo) (annex, readbuf, writebuf, offset, len); | |
1524 | } | |
1525 | ||
1526 | /* Handle qXfer:spu:read and qXfer:spu:write. */ | |
1527 | ||
1528 | static int | |
1529 | handle_qxfer_spu (const char *annex, | |
1530 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1531 | ULONGEST offset, LONGEST len) | |
1532 | { | |
1533 | if (the_target->qxfer_spu == NULL) | |
1534 | return -2; | |
1535 | ||
f0db101d | 1536 | if (current_thread == NULL) |
d08aafef PA |
1537 | return -1; |
1538 | ||
1539 | return (*the_target->qxfer_spu) (annex, readbuf, writebuf, offset, len); | |
1540 | } | |
1541 | ||
1542 | /* Handle qXfer:statictrace:read. */ | |
1543 | ||
1544 | static int | |
1545 | handle_qxfer_statictrace (const char *annex, | |
1546 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1547 | ULONGEST offset, LONGEST len) | |
1548 | { | |
1549 | ULONGEST nbytes; | |
1550 | ||
1551 | if (writebuf != NULL) | |
1552 | return -2; | |
1553 | ||
f0db101d | 1554 | if (annex[0] != '\0' || current_thread == NULL || current_traceframe == -1) |
d08aafef PA |
1555 | return -1; |
1556 | ||
1557 | if (traceframe_read_sdata (current_traceframe, offset, | |
1558 | readbuf, len, &nbytes)) | |
1559 | return -1; | |
1560 | return nbytes; | |
1561 | } | |
1562 | ||
649ebbca DE |
1563 | /* Helper for handle_qxfer_threads_proper. |
1564 | Emit the XML to describe the thread of INF. */ | |
d08aafef | 1565 | |
dc146f7c | 1566 | static void |
649ebbca | 1567 | handle_qxfer_threads_worker (struct inferior_list_entry *inf, void *arg) |
dc146f7c | 1568 | { |
649ebbca | 1569 | struct thread_info *thread = (struct thread_info *) inf; |
9a3c8263 | 1570 | struct buffer *buffer = (struct buffer *) arg; |
649ebbca DE |
1571 | ptid_t ptid = thread_to_gdb_id (thread); |
1572 | char ptid_s[100]; | |
1573 | int core = target_core_of_thread (ptid); | |
1574 | char core_s[21]; | |
79efa585 | 1575 | const char *name = target_thread_name (ptid); |
dc146f7c | 1576 | |
649ebbca | 1577 | write_ptid (ptid_s, ptid); |
dc146f7c | 1578 | |
79efa585 SM |
1579 | buffer_xml_printf (buffer, "<thread id=\"%s\"", ptid_s); |
1580 | ||
649ebbca | 1581 | if (core != -1) |
dc146f7c | 1582 | { |
649ebbca | 1583 | sprintf (core_s, "%d", core); |
79efa585 | 1584 | buffer_xml_printf (buffer, " core=\"%s\"", core_s); |
649ebbca | 1585 | } |
79efa585 SM |
1586 | |
1587 | if (name != NULL) | |
1588 | buffer_xml_printf (buffer, " name=\"%s\"", name); | |
1589 | ||
1590 | buffer_xml_printf (buffer, "/>\n"); | |
649ebbca | 1591 | } |
dc146f7c | 1592 | |
649ebbca | 1593 | /* Helper for handle_qxfer_threads. */ |
dc146f7c | 1594 | |
649ebbca DE |
1595 | static void |
1596 | handle_qxfer_threads_proper (struct buffer *buffer) | |
1597 | { | |
1598 | buffer_grow_str (buffer, "<threads>\n"); | |
1599 | ||
1600 | for_each_inferior_with_data (&all_threads, handle_qxfer_threads_worker, | |
1601 | buffer); | |
dc146f7c VP |
1602 | |
1603 | buffer_grow_str0 (buffer, "</threads>\n"); | |
1604 | } | |
1605 | ||
d08aafef PA |
1606 | /* Handle qXfer:threads:read. */ |
1607 | ||
dc146f7c | 1608 | static int |
d08aafef PA |
1609 | handle_qxfer_threads (const char *annex, |
1610 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1611 | ULONGEST offset, LONGEST len) | |
dc146f7c VP |
1612 | { |
1613 | static char *result = 0; | |
1614 | static unsigned int result_length = 0; | |
1615 | ||
d08aafef PA |
1616 | if (writebuf != NULL) |
1617 | return -2; | |
1618 | ||
f0db101d | 1619 | if (annex[0] != '\0') |
d08aafef | 1620 | return -1; |
dc146f7c VP |
1621 | |
1622 | if (offset == 0) | |
1623 | { | |
1624 | struct buffer buffer; | |
1625 | /* When asked for data at offset 0, generate everything and store into | |
1626 | 'result'. Successive reads will be served off 'result'. */ | |
1627 | if (result) | |
1628 | free (result); | |
1629 | ||
1630 | buffer_init (&buffer); | |
1631 | ||
d08aafef | 1632 | handle_qxfer_threads_proper (&buffer); |
dc146f7c VP |
1633 | |
1634 | result = buffer_finish (&buffer); | |
1635 | result_length = strlen (result); | |
1636 | buffer_free (&buffer); | |
1637 | } | |
1638 | ||
1639 | if (offset >= result_length) | |
1640 | { | |
1641 | /* We're out of data. */ | |
1642 | free (result); | |
1643 | result = NULL; | |
1644 | result_length = 0; | |
1645 | return 0; | |
1646 | } | |
1647 | ||
d08aafef PA |
1648 | if (len > result_length - offset) |
1649 | len = result_length - offset; | |
1650 | ||
1651 | memcpy (readbuf, result + offset, len); | |
1652 | ||
1653 | return len; | |
1654 | } | |
1655 | ||
b3b9301e PA |
1656 | /* Handle qXfer:traceframe-info:read. */ |
1657 | ||
1658 | static int | |
1659 | handle_qxfer_traceframe_info (const char *annex, | |
1660 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1661 | ULONGEST offset, LONGEST len) | |
1662 | { | |
1663 | static char *result = 0; | |
1664 | static unsigned int result_length = 0; | |
1665 | ||
1666 | if (writebuf != NULL) | |
1667 | return -2; | |
1668 | ||
1669 | if (!target_running () || annex[0] != '\0' || current_traceframe == -1) | |
1670 | return -1; | |
1671 | ||
1672 | if (offset == 0) | |
1673 | { | |
1674 | struct buffer buffer; | |
1675 | ||
1676 | /* When asked for data at offset 0, generate everything and | |
1677 | store into 'result'. Successive reads will be served off | |
1678 | 'result'. */ | |
1679 | free (result); | |
1680 | ||
1681 | buffer_init (&buffer); | |
1682 | ||
1683 | traceframe_read_info (current_traceframe, &buffer); | |
1684 | ||
1685 | result = buffer_finish (&buffer); | |
1686 | result_length = strlen (result); | |
1687 | buffer_free (&buffer); | |
1688 | } | |
1689 | ||
1690 | if (offset >= result_length) | |
1691 | { | |
1692 | /* We're out of data. */ | |
1693 | free (result); | |
1694 | result = NULL; | |
1695 | result_length = 0; | |
1696 | return 0; | |
1697 | } | |
1698 | ||
1699 | if (len > result_length - offset) | |
1700 | len = result_length - offset; | |
1701 | ||
1702 | memcpy (readbuf, result + offset, len); | |
1703 | return len; | |
1704 | } | |
1705 | ||
78d85199 YQ |
1706 | /* Handle qXfer:fdpic:read. */ |
1707 | ||
1708 | static int | |
1709 | handle_qxfer_fdpic (const char *annex, gdb_byte *readbuf, | |
1710 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1711 | { | |
1712 | if (the_target->read_loadmap == NULL) | |
1713 | return -2; | |
1714 | ||
f0db101d | 1715 | if (current_thread == NULL) |
78d85199 YQ |
1716 | return -1; |
1717 | ||
1718 | return (*the_target->read_loadmap) (annex, offset, readbuf, len); | |
1719 | } | |
1720 | ||
9accd112 MM |
1721 | /* Handle qXfer:btrace:read. */ |
1722 | ||
1723 | static int | |
1724 | handle_qxfer_btrace (const char *annex, | |
1725 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1726 | ULONGEST offset, LONGEST len) | |
1727 | { | |
1728 | static struct buffer cache; | |
1729 | struct thread_info *thread; | |
add67df8 PA |
1730 | enum btrace_read_type type; |
1731 | int result; | |
9accd112 MM |
1732 | |
1733 | if (the_target->read_btrace == NULL || writebuf != NULL) | |
1734 | return -2; | |
1735 | ||
9accd112 MM |
1736 | if (ptid_equal (general_thread, null_ptid) |
1737 | || ptid_equal (general_thread, minus_one_ptid)) | |
1738 | { | |
1739 | strcpy (own_buf, "E.Must select a single thread."); | |
1740 | return -3; | |
1741 | } | |
1742 | ||
1743 | thread = find_thread_ptid (general_thread); | |
1744 | if (thread == NULL) | |
1745 | { | |
1746 | strcpy (own_buf, "E.No such thread."); | |
1747 | return -3; | |
1748 | } | |
1749 | ||
1750 | if (thread->btrace == NULL) | |
1751 | { | |
1752 | strcpy (own_buf, "E.Btrace not enabled."); | |
1753 | return -3; | |
1754 | } | |
1755 | ||
1756 | if (strcmp (annex, "all") == 0) | |
864089d2 | 1757 | type = BTRACE_READ_ALL; |
9accd112 | 1758 | else if (strcmp (annex, "new") == 0) |
864089d2 | 1759 | type = BTRACE_READ_NEW; |
969c39fb MM |
1760 | else if (strcmp (annex, "delta") == 0) |
1761 | type = BTRACE_READ_DELTA; | |
9accd112 MM |
1762 | else |
1763 | { | |
1764 | strcpy (own_buf, "E.Bad annex."); | |
1765 | return -3; | |
1766 | } | |
1767 | ||
1768 | if (offset == 0) | |
1769 | { | |
1770 | buffer_free (&cache); | |
1771 | ||
969c39fb MM |
1772 | result = target_read_btrace (thread->btrace, &cache, type); |
1773 | if (result != 0) | |
1774 | { | |
1775 | memcpy (own_buf, cache.buffer, cache.used_size); | |
1776 | return -3; | |
1777 | } | |
9accd112 MM |
1778 | } |
1779 | else if (offset > cache.used_size) | |
1780 | { | |
1781 | buffer_free (&cache); | |
1782 | return -3; | |
1783 | } | |
1784 | ||
1785 | if (len > cache.used_size - offset) | |
1786 | len = cache.used_size - offset; | |
1787 | ||
1788 | memcpy (readbuf, cache.buffer + offset, len); | |
1789 | ||
1790 | return len; | |
1791 | } | |
1792 | ||
f4abbc16 MM |
1793 | /* Handle qXfer:btrace-conf:read. */ |
1794 | ||
1795 | static int | |
1796 | handle_qxfer_btrace_conf (const char *annex, | |
1797 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1798 | ULONGEST offset, LONGEST len) | |
1799 | { | |
1800 | static struct buffer cache; | |
1801 | struct thread_info *thread; | |
1802 | int result; | |
1803 | ||
1804 | if (the_target->read_btrace_conf == NULL || writebuf != NULL) | |
1805 | return -2; | |
1806 | ||
f0db101d | 1807 | if (annex[0] != '\0') |
f4abbc16 MM |
1808 | return -1; |
1809 | ||
1810 | if (ptid_equal (general_thread, null_ptid) | |
1811 | || ptid_equal (general_thread, minus_one_ptid)) | |
1812 | { | |
1813 | strcpy (own_buf, "E.Must select a single thread."); | |
1814 | return -3; | |
1815 | } | |
1816 | ||
1817 | thread = find_thread_ptid (general_thread); | |
1818 | if (thread == NULL) | |
1819 | { | |
1820 | strcpy (own_buf, "E.No such thread."); | |
1821 | return -3; | |
1822 | } | |
1823 | ||
1824 | if (thread->btrace == NULL) | |
1825 | { | |
1826 | strcpy (own_buf, "E.Btrace not enabled."); | |
1827 | return -3; | |
1828 | } | |
1829 | ||
1830 | if (offset == 0) | |
1831 | { | |
1832 | buffer_free (&cache); | |
1833 | ||
1834 | result = target_read_btrace_conf (thread->btrace, &cache); | |
1835 | if (result != 0) | |
1836 | { | |
1837 | memcpy (own_buf, cache.buffer, cache.used_size); | |
1838 | return -3; | |
1839 | } | |
1840 | } | |
1841 | else if (offset > cache.used_size) | |
1842 | { | |
1843 | buffer_free (&cache); | |
1844 | return -3; | |
1845 | } | |
1846 | ||
1847 | if (len > cache.used_size - offset) | |
1848 | len = cache.used_size - offset; | |
1849 | ||
1850 | memcpy (readbuf, cache.buffer + offset, len); | |
1851 | ||
1852 | return len; | |
1853 | } | |
1854 | ||
d08aafef PA |
1855 | static const struct qxfer qxfer_packets[] = |
1856 | { | |
1857 | { "auxv", handle_qxfer_auxv }, | |
9accd112 | 1858 | { "btrace", handle_qxfer_btrace }, |
f4abbc16 | 1859 | { "btrace-conf", handle_qxfer_btrace_conf }, |
e57f1de3 | 1860 | { "exec-file", handle_qxfer_exec_file}, |
78d85199 | 1861 | { "fdpic", handle_qxfer_fdpic}, |
d08aafef PA |
1862 | { "features", handle_qxfer_features }, |
1863 | { "libraries", handle_qxfer_libraries }, | |
2268b414 | 1864 | { "libraries-svr4", handle_qxfer_libraries_svr4 }, |
d08aafef PA |
1865 | { "osdata", handle_qxfer_osdata }, |
1866 | { "siginfo", handle_qxfer_siginfo }, | |
1867 | { "spu", handle_qxfer_spu }, | |
1868 | { "statictrace", handle_qxfer_statictrace }, | |
1869 | { "threads", handle_qxfer_threads }, | |
b3b9301e | 1870 | { "traceframe-info", handle_qxfer_traceframe_info }, |
d08aafef PA |
1871 | }; |
1872 | ||
1873 | static int | |
1874 | handle_qxfer (char *own_buf, int packet_len, int *new_packet_len_p) | |
1875 | { | |
1876 | int i; | |
1877 | char *object; | |
1878 | char *rw; | |
1879 | char *annex; | |
1880 | char *offset; | |
1881 | ||
61012eef | 1882 | if (!startswith (own_buf, "qXfer:")) |
d08aafef PA |
1883 | return 0; |
1884 | ||
1885 | /* Grab the object, r/w and annex. */ | |
1886 | if (decode_xfer (own_buf + 6, &object, &rw, &annex, &offset) < 0) | |
1887 | { | |
1888 | write_enn (own_buf); | |
1889 | return 1; | |
1890 | } | |
1891 | ||
1892 | for (i = 0; | |
1893 | i < sizeof (qxfer_packets) / sizeof (qxfer_packets[0]); | |
1894 | i++) | |
1895 | { | |
1896 | const struct qxfer *q = &qxfer_packets[i]; | |
1897 | ||
1898 | if (strcmp (object, q->object) == 0) | |
1899 | { | |
1900 | if (strcmp (rw, "read") == 0) | |
1901 | { | |
1902 | unsigned char *data; | |
1903 | int n; | |
1904 | CORE_ADDR ofs; | |
1905 | unsigned int len; | |
1906 | ||
1907 | /* Grab the offset and length. */ | |
1908 | if (decode_xfer_read (offset, &ofs, &len) < 0) | |
1909 | { | |
1910 | write_enn (own_buf); | |
1911 | return 1; | |
1912 | } | |
1913 | ||
1914 | /* Read one extra byte, as an indicator of whether there is | |
1915 | more. */ | |
1916 | if (len > PBUFSIZ - 2) | |
1917 | len = PBUFSIZ - 2; | |
224c3ddb | 1918 | data = (unsigned char *) malloc (len + 1); |
d08aafef PA |
1919 | if (data == NULL) |
1920 | { | |
1921 | write_enn (own_buf); | |
1922 | return 1; | |
1923 | } | |
1924 | n = (*q->xfer) (annex, data, NULL, ofs, len + 1); | |
1925 | if (n == -2) | |
1926 | { | |
1927 | free (data); | |
1928 | return 0; | |
1929 | } | |
5cc22e4c MM |
1930 | else if (n == -3) |
1931 | { | |
1932 | /* Preserve error message. */ | |
1933 | } | |
d08aafef PA |
1934 | else if (n < 0) |
1935 | write_enn (own_buf); | |
1936 | else if (n > len) | |
1937 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); | |
1938 | else | |
1939 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); | |
1940 | ||
1941 | free (data); | |
1942 | return 1; | |
1943 | } | |
1944 | else if (strcmp (rw, "write") == 0) | |
1945 | { | |
1946 | int n; | |
1947 | unsigned int len; | |
1948 | CORE_ADDR ofs; | |
1949 | unsigned char *data; | |
1950 | ||
1951 | strcpy (own_buf, "E00"); | |
224c3ddb | 1952 | data = (unsigned char *) malloc (packet_len - (offset - own_buf)); |
d08aafef PA |
1953 | if (data == NULL) |
1954 | { | |
1955 | write_enn (own_buf); | |
1956 | return 1; | |
1957 | } | |
1958 | if (decode_xfer_write (offset, packet_len - (offset - own_buf), | |
1959 | &ofs, &len, data) < 0) | |
1960 | { | |
1961 | free (data); | |
1962 | write_enn (own_buf); | |
1963 | return 1; | |
1964 | } | |
1965 | ||
1966 | n = (*q->xfer) (annex, NULL, data, ofs, len); | |
1967 | if (n == -2) | |
1968 | { | |
1969 | free (data); | |
1970 | return 0; | |
1971 | } | |
5cc22e4c MM |
1972 | else if (n == -3) |
1973 | { | |
1974 | /* Preserve error message. */ | |
1975 | } | |
d08aafef PA |
1976 | else if (n < 0) |
1977 | write_enn (own_buf); | |
1978 | else | |
1979 | sprintf (own_buf, "%x", n); | |
dc146f7c | 1980 | |
d08aafef PA |
1981 | free (data); |
1982 | return 1; | |
1983 | } | |
dc146f7c | 1984 | |
d08aafef PA |
1985 | return 0; |
1986 | } | |
1987 | } | |
dc146f7c | 1988 | |
d08aafef | 1989 | return 0; |
dc146f7c VP |
1990 | } |
1991 | ||
30ba68cb MS |
1992 | /* Compute 32 bit CRC from inferior memory. |
1993 | ||
1994 | On success, return 32 bit CRC. | |
1995 | On failure, return (unsigned long long) -1. */ | |
1996 | ||
1997 | static unsigned long long | |
1998 | crc32 (CORE_ADDR base, int len, unsigned int crc) | |
1999 | { | |
30ba68cb MS |
2000 | while (len--) |
2001 | { | |
2002 | unsigned char byte = 0; | |
2003 | ||
2004 | /* Return failure if memory read fails. */ | |
2005 | if (read_inferior_memory (base, &byte, 1) != 0) | |
2006 | return (unsigned long long) -1; | |
2007 | ||
65da7f14 | 2008 | crc = xcrc32 (&byte, 1, crc); |
30ba68cb MS |
2009 | base++; |
2010 | } | |
2011 | return (unsigned long long) crc; | |
2012 | } | |
2013 | ||
043c3577 MM |
2014 | /* Add supported btrace packets to BUF. */ |
2015 | ||
2016 | static void | |
2017 | supported_btrace_packets (char *buf) | |
2018 | { | |
b20a6524 MM |
2019 | int btrace_supported = 0; |
2020 | ||
043c3577 | 2021 | if (target_supports_btrace (BTRACE_FORMAT_BTS)) |
d33501a5 MM |
2022 | { |
2023 | strcat (buf, ";Qbtrace:bts+"); | |
2024 | strcat (buf, ";Qbtrace-conf:bts:size+"); | |
b20a6524 MM |
2025 | |
2026 | btrace_supported = 1; | |
d33501a5 | 2027 | } |
b20a6524 MM |
2028 | |
2029 | if (target_supports_btrace (BTRACE_FORMAT_PT)) | |
2030 | { | |
2031 | strcat (buf, ";Qbtrace:pt+"); | |
2032 | strcat (buf, ";Qbtrace-conf:pt:size+"); | |
2033 | ||
2034 | btrace_supported = 1; | |
2035 | } | |
2036 | ||
2037 | if (!btrace_supported) | |
043c3577 MM |
2038 | return; |
2039 | ||
2040 | strcat (buf, ";Qbtrace:off+"); | |
2041 | strcat (buf, ";qXfer:btrace:read+"); | |
f4abbc16 | 2042 | strcat (buf, ";qXfer:btrace-conf:read+"); |
043c3577 MM |
2043 | } |
2044 | ||
ce3a066d | 2045 | /* Handle all of the extended 'q' packets. */ |
d08aafef | 2046 | |
5b3da067 | 2047 | static void |
0e7f50da | 2048 | handle_query (char *own_buf, int packet_len, int *new_packet_len_p) |
ce3a066d | 2049 | { |
0d62e5e8 DJ |
2050 | static struct inferior_list_entry *thread_ptr; |
2051 | ||
bb63802a | 2052 | /* Reply the current thread id. */ |
db42f210 | 2053 | if (strcmp ("qC", own_buf) == 0 && !disable_packet_qC) |
bb63802a | 2054 | { |
95954743 | 2055 | ptid_t gdb_id; |
2d717e4f | 2056 | require_running (own_buf); |
bd99dc85 | 2057 | |
95954743 PA |
2058 | if (!ptid_equal (general_thread, null_ptid) |
2059 | && !ptid_equal (general_thread, minus_one_ptid)) | |
bd99dc85 PA |
2060 | gdb_id = general_thread; |
2061 | else | |
2062 | { | |
649ebbca | 2063 | thread_ptr = get_first_inferior (&all_threads); |
bd99dc85 PA |
2064 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); |
2065 | } | |
2066 | ||
95954743 PA |
2067 | sprintf (own_buf, "QC"); |
2068 | own_buf += 2; | |
4b812f4e | 2069 | write_ptid (own_buf, gdb_id); |
bb63802a UW |
2070 | return; |
2071 | } | |
2072 | ||
ce3a066d DJ |
2073 | if (strcmp ("qSymbol::", own_buf) == 0) |
2074 | { | |
34c65914 PA |
2075 | struct thread_info *save_thread = current_thread; |
2076 | ||
2077 | /* For qSymbol, GDB only changes the current thread if the | |
2078 | previous current thread was of a different process. So if | |
2079 | the previous thread is gone, we need to pick another one of | |
2080 | the same process. This can happen e.g., if we followed an | |
2081 | exec in a non-leader thread. */ | |
2082 | if (current_thread == NULL) | |
2083 | { | |
2084 | current_thread | |
2085 | = find_any_thread_of_pid (ptid_get_pid (general_thread)); | |
2086 | ||
2087 | /* Just in case, if we didn't find a thread, then bail out | |
2088 | instead of crashing. */ | |
2089 | if (current_thread == NULL) | |
2090 | { | |
2091 | write_enn (own_buf); | |
2092 | current_thread = save_thread; | |
2093 | return; | |
2094 | } | |
2095 | } | |
2096 | ||
d3bbe7a0 PA |
2097 | /* GDB is suggesting new symbols have been loaded. This may |
2098 | mean a new shared library has been detected as loaded, so | |
2099 | take the opportunity to check if breakpoints we think are | |
2100 | inserted, still are. Note that it isn't guaranteed that | |
2101 | we'll see this when a shared library is loaded, and nor will | |
2102 | we see this for unloads (although breakpoints in unloaded | |
2103 | libraries shouldn't trigger), as GDB may not find symbols for | |
2104 | the library at all. We also re-validate breakpoints when we | |
2105 | see a second GDB breakpoint for the same address, and or when | |
2106 | we access breakpoint shadows. */ | |
2107 | validate_breakpoints (); | |
2108 | ||
fa593d66 PA |
2109 | if (target_supports_tracepoints ()) |
2110 | tracepoint_look_up_symbols (); | |
2111 | ||
f0db101d | 2112 | if (current_thread != NULL && the_target->look_up_symbols != NULL) |
2f2893d9 DJ |
2113 | (*the_target->look_up_symbols) (); |
2114 | ||
34c65914 PA |
2115 | current_thread = save_thread; |
2116 | ||
ce3a066d DJ |
2117 | strcpy (own_buf, "OK"); |
2118 | return; | |
2119 | } | |
2120 | ||
db42f210 | 2121 | if (!disable_packet_qfThreadInfo) |
0d62e5e8 | 2122 | { |
db42f210 | 2123 | if (strcmp ("qfThreadInfo", own_buf) == 0) |
0d62e5e8 | 2124 | { |
95954743 PA |
2125 | ptid_t gdb_id; |
2126 | ||
db42f210 | 2127 | require_running (own_buf); |
649ebbca | 2128 | thread_ptr = get_first_inferior (&all_threads); |
95954743 PA |
2129 | |
2130 | *own_buf++ = 'm'; | |
2131 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
2132 | write_ptid (own_buf, gdb_id); | |
0d62e5e8 DJ |
2133 | thread_ptr = thread_ptr->next; |
2134 | return; | |
2135 | } | |
db42f210 PA |
2136 | |
2137 | if (strcmp ("qsThreadInfo", own_buf) == 0) | |
0d62e5e8 | 2138 | { |
95954743 PA |
2139 | ptid_t gdb_id; |
2140 | ||
db42f210 PA |
2141 | require_running (own_buf); |
2142 | if (thread_ptr != NULL) | |
2143 | { | |
95954743 PA |
2144 | *own_buf++ = 'm'; |
2145 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
2146 | write_ptid (own_buf, gdb_id); | |
db42f210 PA |
2147 | thread_ptr = thread_ptr->next; |
2148 | return; | |
2149 | } | |
2150 | else | |
2151 | { | |
2152 | sprintf (own_buf, "l"); | |
2153 | return; | |
2154 | } | |
0d62e5e8 DJ |
2155 | } |
2156 | } | |
aa691b87 | 2157 | |
52fb6437 NS |
2158 | if (the_target->read_offsets != NULL |
2159 | && strcmp ("qOffsets", own_buf) == 0) | |
2160 | { | |
2161 | CORE_ADDR text, data; | |
2d717e4f DJ |
2162 | |
2163 | require_running (own_buf); | |
52fb6437 NS |
2164 | if (the_target->read_offsets (&text, &data)) |
2165 | sprintf (own_buf, "Text=%lX;Data=%lX;Bss=%lX", | |
2166 | (long)text, (long)data, (long)data); | |
2167 | else | |
2168 | write_enn (own_buf); | |
1b3f6016 | 2169 | |
52fb6437 NS |
2170 | return; |
2171 | } | |
2172 | ||
be2a5f71 | 2173 | /* Protocol features query. */ |
61012eef | 2174 | if (startswith (own_buf, "qSupported") |
be2a5f71 DJ |
2175 | && (own_buf[10] == ':' || own_buf[10] == '\0')) |
2176 | { | |
95954743 | 2177 | char *p = &own_buf[10]; |
fa593d66 | 2178 | int gdb_supports_qRelocInsn = 0; |
95954743 PA |
2179 | |
2180 | /* Process each feature being provided by GDB. The first | |
2181 | feature will follow a ':', and latter features will follow | |
2182 | ';'. */ | |
2183 | if (*p == ':') | |
d149dd1d PA |
2184 | { |
2185 | char **qsupported = NULL; | |
2186 | int count = 0; | |
06e03fff | 2187 | int unknown = 0; |
d149dd1d PA |
2188 | int i; |
2189 | ||
2190 | /* Two passes, to avoid nested strtok calls in | |
2191 | target_process_qsupported. */ | |
2192 | for (p = strtok (p + 1, ";"); | |
2193 | p != NULL; | |
2194 | p = strtok (NULL, ";")) | |
2195 | { | |
2196 | count++; | |
224c3ddb | 2197 | qsupported = XRESIZEVEC (char *, qsupported, count); |
d149dd1d PA |
2198 | qsupported[count - 1] = xstrdup (p); |
2199 | } | |
2200 | ||
2201 | for (i = 0; i < count; i++) | |
2202 | { | |
2203 | p = qsupported[i]; | |
2204 | if (strcmp (p, "multiprocess+") == 0) | |
2205 | { | |
2206 | /* GDB supports and wants multi-process support if | |
2207 | possible. */ | |
2208 | if (target_supports_multi_process ()) | |
2209 | multi_process = 1; | |
2210 | } | |
fa593d66 PA |
2211 | else if (strcmp (p, "qRelocInsn+") == 0) |
2212 | { | |
2213 | /* GDB supports relocate instruction requests. */ | |
2214 | gdb_supports_qRelocInsn = 1; | |
2215 | } | |
1ec68e26 PA |
2216 | else if (strcmp (p, "swbreak+") == 0) |
2217 | { | |
2218 | /* GDB wants us to report whether a trap is caused | |
2219 | by a software breakpoint and for us to handle PC | |
2220 | adjustment if necessary on this target. */ | |
2221 | if (target_supports_stopped_by_sw_breakpoint ()) | |
2222 | swbreak_feature = 1; | |
2223 | } | |
2224 | else if (strcmp (p, "hwbreak+") == 0) | |
2225 | { | |
2226 | /* GDB wants us to report whether a trap is caused | |
2227 | by a hardware breakpoint. */ | |
2228 | if (target_supports_stopped_by_hw_breakpoint ()) | |
2229 | hwbreak_feature = 1; | |
2230 | } | |
89245bc0 DB |
2231 | else if (strcmp (p, "fork-events+") == 0) |
2232 | { | |
2233 | /* GDB supports and wants fork events if possible. */ | |
2234 | if (target_supports_fork_events ()) | |
2235 | report_fork_events = 1; | |
2236 | } | |
2237 | else if (strcmp (p, "vfork-events+") == 0) | |
2238 | { | |
2239 | /* GDB supports and wants vfork events if possible. */ | |
2240 | if (target_supports_vfork_events ()) | |
2241 | report_vfork_events = 1; | |
2242 | } | |
7c5d0fad | 2243 | else if (strcmp (p, "exec-events+") == 0) |
94585166 DB |
2244 | { |
2245 | /* GDB supports and wants exec events if possible. */ | |
2246 | if (target_supports_exec_events ()) | |
2247 | report_exec_events = 1; | |
2248 | } | |
750ce8d1 YQ |
2249 | else if (strcmp (p, "vContSupported+") == 0) |
2250 | vCont_supported = 1; | |
65706a29 PA |
2251 | else if (strcmp (p, "QThreadEvents+") == 0) |
2252 | ; | |
f2faf941 PA |
2253 | else if (strcmp (p, "no-resumed+") == 0) |
2254 | { | |
2255 | /* GDB supports and wants TARGET_WAITKIND_NO_RESUMED | |
2256 | events. */ | |
2257 | report_no_resumed = 1; | |
2258 | } | |
d149dd1d | 2259 | else |
06e03fff PA |
2260 | { |
2261 | /* Move the unknown features all together. */ | |
2262 | qsupported[i] = NULL; | |
2263 | qsupported[unknown] = p; | |
2264 | unknown++; | |
2265 | } | |
d149dd1d PA |
2266 | } |
2267 | ||
06e03fff PA |
2268 | /* Give the target backend a chance to process the unknown |
2269 | features. */ | |
2270 | target_process_qsupported (qsupported, unknown); | |
2271 | ||
2272 | for (i = 0; i < count; i++) | |
2273 | free (qsupported[i]); | |
d149dd1d PA |
2274 | free (qsupported); |
2275 | } | |
95954743 | 2276 | |
9b224c5e PA |
2277 | sprintf (own_buf, |
2278 | "PacketSize=%x;QPassSignals+;QProgramSignals+", | |
2279 | PBUFSIZ - 1); | |
0876f84a | 2280 | |
82075af2 JS |
2281 | if (target_supports_catch_syscall ()) |
2282 | strcat (own_buf, ";QCatchSyscalls+"); | |
2283 | ||
2268b414 | 2284 | if (the_target->qxfer_libraries_svr4 != NULL) |
b1fbec62 GB |
2285 | strcat (own_buf, ";qXfer:libraries-svr4:read+" |
2286 | ";augmented-libraries-svr4-read+"); | |
2268b414 JK |
2287 | else |
2288 | { | |
2289 | /* We do not have any hook to indicate whether the non-SVR4 target | |
2290 | backend supports qXfer:libraries:read, so always report it. */ | |
2291 | strcat (own_buf, ";qXfer:libraries:read+"); | |
2292 | } | |
255e7678 | 2293 | |
0876f84a | 2294 | if (the_target->read_auxv != NULL) |
9f2e1e63 | 2295 | strcat (own_buf, ";qXfer:auxv:read+"); |
2d717e4f | 2296 | |
0e7f50da UW |
2297 | if (the_target->qxfer_spu != NULL) |
2298 | strcat (own_buf, ";qXfer:spu:read+;qXfer:spu:write+"); | |
0876f84a | 2299 | |
4aa995e1 PA |
2300 | if (the_target->qxfer_siginfo != NULL) |
2301 | strcat (own_buf, ";qXfer:siginfo:read+;qXfer:siginfo:write+"); | |
2302 | ||
78d85199 YQ |
2303 | if (the_target->read_loadmap != NULL) |
2304 | strcat (own_buf, ";qXfer:fdpic:read+"); | |
2305 | ||
221c031f UW |
2306 | /* We always report qXfer:features:read, as targets may |
2307 | install XML files on a subsequent call to arch_setup. | |
2308 | If we reported to GDB on startup that we don't support | |
2309 | qXfer:feature:read at all, we will never be re-queried. */ | |
2310 | strcat (own_buf, ";qXfer:features:read+"); | |
23181151 | 2311 | |
a6f3e723 SL |
2312 | if (transport_is_reliable) |
2313 | strcat (own_buf, ";QStartNoAckMode+"); | |
07e059b5 VP |
2314 | |
2315 | if (the_target->qxfer_osdata != NULL) | |
1b3f6016 | 2316 | strcat (own_buf, ";qXfer:osdata:read+"); |
07e059b5 | 2317 | |
cf8fd78b PA |
2318 | if (target_supports_multi_process ()) |
2319 | strcat (own_buf, ";multiprocess+"); | |
95954743 | 2320 | |
89245bc0 DB |
2321 | if (target_supports_fork_events ()) |
2322 | strcat (own_buf, ";fork-events+"); | |
2323 | ||
2324 | if (target_supports_vfork_events ()) | |
2325 | strcat (own_buf, ";vfork-events+"); | |
2326 | ||
94585166 DB |
2327 | if (target_supports_exec_events ()) |
2328 | strcat (own_buf, ";exec-events+"); | |
2329 | ||
bd99dc85 PA |
2330 | if (target_supports_non_stop ()) |
2331 | strcat (own_buf, ";QNonStop+"); | |
2332 | ||
03583c20 UW |
2333 | if (target_supports_disable_randomization ()) |
2334 | strcat (own_buf, ";QDisableRandomization+"); | |
2335 | ||
dc146f7c VP |
2336 | strcat (own_buf, ";qXfer:threads:read+"); |
2337 | ||
219f2f23 PA |
2338 | if (target_supports_tracepoints ()) |
2339 | { | |
2340 | strcat (own_buf, ";ConditionalTracepoints+"); | |
2341 | strcat (own_buf, ";TraceStateVariables+"); | |
2342 | strcat (own_buf, ";TracepointSource+"); | |
8336d594 | 2343 | strcat (own_buf, ";DisconnectedTracing+"); |
fa593d66 PA |
2344 | if (gdb_supports_qRelocInsn && target_supports_fast_tracepoints ()) |
2345 | strcat (own_buf, ";FastTracepoints+"); | |
0fb4aa4b | 2346 | strcat (own_buf, ";StaticTracepoints+"); |
1e4d1764 | 2347 | strcat (own_buf, ";InstallInTrace+"); |
0fb4aa4b | 2348 | strcat (own_buf, ";qXfer:statictrace:read+"); |
b3b9301e | 2349 | strcat (own_buf, ";qXfer:traceframe-info:read+"); |
d248b706 | 2350 | strcat (own_buf, ";EnableDisableTracepoints+"); |
f6f899bf | 2351 | strcat (own_buf, ";QTBuffer:size+"); |
3065dfb6 | 2352 | strcat (own_buf, ";tracenz+"); |
219f2f23 PA |
2353 | } |
2354 | ||
bd2b2909 AT |
2355 | if (target_supports_hardware_single_step () |
2356 | || target_supports_software_single_step () ) | |
70b90b91 | 2357 | { |
70b90b91 YQ |
2358 | strcat (own_buf, ";ConditionalBreakpoints+"); |
2359 | } | |
d3ce09f5 | 2360 | strcat (own_buf, ";BreakpointCommands+"); |
9f3a5c85 | 2361 | |
d1feda86 YQ |
2362 | if (target_supports_agent ()) |
2363 | strcat (own_buf, ";QAgent+"); | |
2364 | ||
043c3577 | 2365 | supported_btrace_packets (own_buf); |
9accd112 | 2366 | |
1ec68e26 PA |
2367 | if (target_supports_stopped_by_sw_breakpoint ()) |
2368 | strcat (own_buf, ";swbreak+"); | |
2369 | ||
2370 | if (target_supports_stopped_by_hw_breakpoint ()) | |
2371 | strcat (own_buf, ";hwbreak+"); | |
2372 | ||
e57f1de3 GB |
2373 | if (the_target->pid_to_exec_file != NULL) |
2374 | strcat (own_buf, ";qXfer:exec-file:read+"); | |
2375 | ||
750ce8d1 YQ |
2376 | strcat (own_buf, ";vContSupported+"); |
2377 | ||
65706a29 PA |
2378 | strcat (own_buf, ";QThreadEvents+"); |
2379 | ||
f2faf941 PA |
2380 | strcat (own_buf, ";no-resumed+"); |
2381 | ||
14d2069a GB |
2382 | /* Reinitialize components as needed for the new connection. */ |
2383 | hostio_handle_new_gdb_connection (); | |
de0d863e DB |
2384 | target_handle_new_gdb_connection (); |
2385 | ||
be2a5f71 DJ |
2386 | return; |
2387 | } | |
2388 | ||
dae5f5cf DJ |
2389 | /* Thread-local storage support. */ |
2390 | if (the_target->get_tls_address != NULL | |
61012eef | 2391 | && startswith (own_buf, "qGetTLSAddr:")) |
dae5f5cf DJ |
2392 | { |
2393 | char *p = own_buf + 12; | |
5b1c542e | 2394 | CORE_ADDR parts[2], address = 0; |
dae5f5cf | 2395 | int i, err; |
95954743 | 2396 | ptid_t ptid = null_ptid; |
dae5f5cf | 2397 | |
2d717e4f DJ |
2398 | require_running (own_buf); |
2399 | ||
dae5f5cf DJ |
2400 | for (i = 0; i < 3; i++) |
2401 | { | |
2402 | char *p2; | |
2403 | int len; | |
2404 | ||
2405 | if (p == NULL) | |
2406 | break; | |
2407 | ||
2408 | p2 = strchr (p, ','); | |
2409 | if (p2) | |
2410 | { | |
2411 | len = p2 - p; | |
2412 | p2++; | |
2413 | } | |
2414 | else | |
2415 | { | |
2416 | len = strlen (p); | |
2417 | p2 = NULL; | |
2418 | } | |
2419 | ||
5b1c542e | 2420 | if (i == 0) |
95954743 | 2421 | ptid = read_ptid (p, NULL); |
5b1c542e PA |
2422 | else |
2423 | decode_address (&parts[i - 1], p, len); | |
dae5f5cf DJ |
2424 | p = p2; |
2425 | } | |
2426 | ||
2427 | if (p != NULL || i < 3) | |
2428 | err = 1; | |
2429 | else | |
2430 | { | |
e09875d4 | 2431 | struct thread_info *thread = find_thread_ptid (ptid); |
dae5f5cf DJ |
2432 | |
2433 | if (thread == NULL) | |
2434 | err = 2; | |
2435 | else | |
5b1c542e | 2436 | err = the_target->get_tls_address (thread, parts[0], parts[1], |
dae5f5cf DJ |
2437 | &address); |
2438 | } | |
2439 | ||
2440 | if (err == 0) | |
2441 | { | |
c6f46ca0 | 2442 | strcpy (own_buf, paddress(address)); |
dae5f5cf DJ |
2443 | return; |
2444 | } | |
2445 | else if (err > 0) | |
2446 | { | |
2447 | write_enn (own_buf); | |
2448 | return; | |
2449 | } | |
2450 | ||
2451 | /* Otherwise, pretend we do not understand this packet. */ | |
2452 | } | |
2453 | ||
711e434b PM |
2454 | /* Windows OS Thread Information Block address support. */ |
2455 | if (the_target->get_tib_address != NULL | |
61012eef | 2456 | && startswith (own_buf, "qGetTIBAddr:")) |
711e434b PM |
2457 | { |
2458 | char *annex; | |
2459 | int n; | |
2460 | CORE_ADDR tlb; | |
2461 | ptid_t ptid = read_ptid (own_buf + 12, &annex); | |
2462 | ||
2463 | n = (*the_target->get_tib_address) (ptid, &tlb); | |
2464 | if (n == 1) | |
2465 | { | |
c6f46ca0 | 2466 | strcpy (own_buf, paddress(tlb)); |
711e434b PM |
2467 | return; |
2468 | } | |
2469 | else if (n == 0) | |
2470 | { | |
2471 | write_enn (own_buf); | |
2472 | return; | |
2473 | } | |
2474 | return; | |
2475 | } | |
2476 | ||
c74d0ad8 | 2477 | /* Handle "monitor" commands. */ |
61012eef | 2478 | if (startswith (own_buf, "qRcmd,")) |
c74d0ad8 | 2479 | { |
224c3ddb | 2480 | char *mon = (char *) malloc (PBUFSIZ); |
c74d0ad8 DJ |
2481 | int len = strlen (own_buf + 6); |
2482 | ||
aef93bd7 DE |
2483 | if (mon == NULL) |
2484 | { | |
2485 | write_enn (own_buf); | |
2486 | return; | |
2487 | } | |
2488 | ||
ff0e980e TT |
2489 | if ((len % 2) != 0 |
2490 | || hex2bin (own_buf + 6, (gdb_byte *) mon, len / 2) != len / 2) | |
c74d0ad8 DJ |
2491 | { |
2492 | write_enn (own_buf); | |
2493 | free (mon); | |
2494 | return; | |
2495 | } | |
2496 | mon[len / 2] = '\0'; | |
2497 | ||
2498 | write_ok (own_buf); | |
2499 | ||
cdbfd419 PP |
2500 | if (the_target->handle_monitor_command == NULL |
2501 | || (*the_target->handle_monitor_command) (mon) == 0) | |
2502 | /* Default processing. */ | |
d73f2619 | 2503 | handle_monitor_command (mon, own_buf); |
c74d0ad8 DJ |
2504 | |
2505 | free (mon); | |
2506 | return; | |
2507 | } | |
2508 | ||
61012eef | 2509 | if (startswith (own_buf, "qSearch:memory:")) |
08388c79 DE |
2510 | { |
2511 | require_running (own_buf); | |
2512 | handle_search_memory (own_buf, packet_len); | |
2513 | return; | |
2514 | } | |
2515 | ||
95954743 | 2516 | if (strcmp (own_buf, "qAttached") == 0 |
61012eef | 2517 | || startswith (own_buf, "qAttached:")) |
0b16c5cf | 2518 | { |
95954743 PA |
2519 | struct process_info *process; |
2520 | ||
2521 | if (own_buf[sizeof ("qAttached") - 1]) | |
2522 | { | |
2523 | int pid = strtoul (own_buf + sizeof ("qAttached:") - 1, NULL, 16); | |
2524 | process = (struct process_info *) | |
2525 | find_inferior_id (&all_processes, pid_to_ptid (pid)); | |
2526 | } | |
2527 | else | |
2528 | { | |
2529 | require_running (own_buf); | |
2530 | process = current_process (); | |
2531 | } | |
2532 | ||
2533 | if (process == NULL) | |
2534 | { | |
2535 | write_enn (own_buf); | |
2536 | return; | |
2537 | } | |
2538 | ||
2539 | strcpy (own_buf, process->attached ? "1" : "0"); | |
0b16c5cf PA |
2540 | return; |
2541 | } | |
2542 | ||
61012eef | 2543 | if (startswith (own_buf, "qCRC:")) |
30ba68cb MS |
2544 | { |
2545 | /* CRC check (compare-section). */ | |
2546 | char *comma; | |
aca22551 | 2547 | ULONGEST base; |
30ba68cb MS |
2548 | int len; |
2549 | unsigned long long crc; | |
2550 | ||
2551 | require_running (own_buf); | |
aca22551 | 2552 | comma = unpack_varlen_hex (own_buf + 5, &base); |
30ba68cb MS |
2553 | if (*comma++ != ',') |
2554 | { | |
2555 | write_enn (own_buf); | |
2556 | return; | |
2557 | } | |
2558 | len = strtoul (comma, NULL, 16); | |
2559 | crc = crc32 (base, len, 0xffffffff); | |
2560 | /* Check for memory failure. */ | |
2561 | if (crc == (unsigned long long) -1) | |
2562 | { | |
2563 | write_enn (own_buf); | |
2564 | return; | |
2565 | } | |
2566 | sprintf (own_buf, "C%lx", (unsigned long) crc); | |
2567 | return; | |
2568 | } | |
2569 | ||
d08aafef PA |
2570 | if (handle_qxfer (own_buf, packet_len, new_packet_len_p)) |
2571 | return; | |
2572 | ||
219f2f23 PA |
2573 | if (target_supports_tracepoints () && handle_tracepoint_query (own_buf)) |
2574 | return; | |
2575 | ||
ce3a066d DJ |
2576 | /* Otherwise we didn't know what packet it was. Say we didn't |
2577 | understand it. */ | |
2578 | own_buf[0] = 0; | |
2579 | } | |
2580 | ||
ce1a5b52 | 2581 | static void gdb_wants_all_threads_stopped (void); |
b7ea362b PA |
2582 | static void resume (struct thread_resume *actions, size_t n); |
2583 | ||
649ebbca DE |
2584 | /* The callback that is passed to visit_actioned_threads. */ |
2585 | typedef int (visit_actioned_threads_callback_ftype) | |
2586 | (const struct thread_resume *, struct thread_info *); | |
2587 | ||
2588 | /* Struct to pass data to visit_actioned_threads. */ | |
2589 | ||
2590 | struct visit_actioned_threads_data | |
2591 | { | |
2592 | const struct thread_resume *actions; | |
2593 | size_t num_actions; | |
2594 | visit_actioned_threads_callback_ftype *callback; | |
2595 | }; | |
2596 | ||
b7ea362b PA |
2597 | /* Call CALLBACK for any thread to which ACTIONS applies to. Returns |
2598 | true if CALLBACK returns true. Returns false if no matching thread | |
649ebbca DE |
2599 | is found or CALLBACK results false. |
2600 | Note: This function is itself a callback for find_inferior. */ | |
b7ea362b PA |
2601 | |
2602 | static int | |
649ebbca | 2603 | visit_actioned_threads (struct inferior_list_entry *entry, void *datap) |
b7ea362b | 2604 | { |
9a3c8263 SM |
2605 | struct visit_actioned_threads_data *data |
2606 | = (struct visit_actioned_threads_data *) datap; | |
649ebbca DE |
2607 | const struct thread_resume *actions = data->actions; |
2608 | size_t num_actions = data->num_actions; | |
2609 | visit_actioned_threads_callback_ftype *callback = data->callback; | |
2610 | size_t i; | |
b7ea362b | 2611 | |
649ebbca | 2612 | for (i = 0; i < num_actions; i++) |
b7ea362b | 2613 | { |
649ebbca | 2614 | const struct thread_resume *action = &actions[i]; |
b7ea362b | 2615 | |
649ebbca DE |
2616 | if (ptid_equal (action->thread, minus_one_ptid) |
2617 | || ptid_equal (action->thread, entry->id) | |
2618 | || ((ptid_get_pid (action->thread) | |
2619 | == ptid_get_pid (entry->id)) | |
2620 | && ptid_get_lwp (action->thread) == -1)) | |
b7ea362b | 2621 | { |
649ebbca | 2622 | struct thread_info *thread = (struct thread_info *) entry; |
b7ea362b | 2623 | |
649ebbca DE |
2624 | if ((*callback) (action, thread)) |
2625 | return 1; | |
b7ea362b PA |
2626 | } |
2627 | } | |
2628 | ||
2629 | return 0; | |
2630 | } | |
2631 | ||
2632 | /* Callback for visit_actioned_threads. If the thread has a pending | |
2633 | status to report, report it now. */ | |
2634 | ||
2635 | static int | |
2636 | handle_pending_status (const struct thread_resume *resumption, | |
2637 | struct thread_info *thread) | |
2638 | { | |
2639 | if (thread->status_pending_p) | |
2640 | { | |
2641 | thread->status_pending_p = 0; | |
2642 | ||
2643 | last_status = thread->last_status; | |
2644 | last_ptid = thread->entry.id; | |
2645 | prepare_resume_reply (own_buf, last_ptid, &last_status); | |
2646 | return 1; | |
2647 | } | |
2648 | return 0; | |
2649 | } | |
ce1a5b52 | 2650 | |
64386c31 | 2651 | /* Parse vCont packets. */ |
5b3da067 | 2652 | static void |
5b1c542e | 2653 | handle_v_cont (char *own_buf) |
64386c31 DJ |
2654 | { |
2655 | char *p, *q; | |
2656 | int n = 0, i = 0; | |
2bd7c093 | 2657 | struct thread_resume *resume_info; |
95954743 | 2658 | struct thread_resume default_action = {{0}}; |
64386c31 DJ |
2659 | |
2660 | /* Count the number of semicolons in the packet. There should be one | |
2661 | for every action. */ | |
2662 | p = &own_buf[5]; | |
2663 | while (p) | |
2664 | { | |
2665 | n++; | |
2666 | p++; | |
2667 | p = strchr (p, ';'); | |
2668 | } | |
2bd7c093 | 2669 | |
224c3ddb | 2670 | resume_info = (struct thread_resume *) malloc (n * sizeof (resume_info[0])); |
aef93bd7 DE |
2671 | if (resume_info == NULL) |
2672 | goto err; | |
64386c31 | 2673 | |
64386c31 | 2674 | p = &own_buf[5]; |
64386c31 DJ |
2675 | while (*p) |
2676 | { | |
2677 | p++; | |
2678 | ||
c2d6af84 PA |
2679 | memset (&resume_info[i], 0, sizeof resume_info[i]); |
2680 | ||
64386c31 | 2681 | if (p[0] == 's' || p[0] == 'S') |
bd99dc85 | 2682 | resume_info[i].kind = resume_step; |
c2d6af84 PA |
2683 | else if (p[0] == 'r') |
2684 | resume_info[i].kind = resume_step; | |
64386c31 | 2685 | else if (p[0] == 'c' || p[0] == 'C') |
bd99dc85 PA |
2686 | resume_info[i].kind = resume_continue; |
2687 | else if (p[0] == 't') | |
2688 | resume_info[i].kind = resume_stop; | |
64386c31 DJ |
2689 | else |
2690 | goto err; | |
2691 | ||
2692 | if (p[0] == 'S' || p[0] == 'C') | |
2693 | { | |
2694 | int sig; | |
2695 | sig = strtol (p + 1, &q, 16); | |
2696 | if (p == q) | |
2697 | goto err; | |
2698 | p = q; | |
2699 | ||
e053fbc4 | 2700 | if (!gdb_signal_to_host_p ((enum gdb_signal) sig)) |
64386c31 | 2701 | goto err; |
e053fbc4 | 2702 | resume_info[i].sig = gdb_signal_to_host ((enum gdb_signal) sig); |
64386c31 | 2703 | } |
c2d6af84 PA |
2704 | else if (p[0] == 'r') |
2705 | { | |
6740dc9c | 2706 | ULONGEST addr; |
c2d6af84 | 2707 | |
6740dc9c PA |
2708 | p = unpack_varlen_hex (p + 1, &addr); |
2709 | resume_info[i].step_range_start = addr; | |
c2d6af84 | 2710 | |
6740dc9c PA |
2711 | if (*p != ',') |
2712 | goto err; | |
c2d6af84 | 2713 | |
6740dc9c PA |
2714 | p = unpack_varlen_hex (p + 1, &addr); |
2715 | resume_info[i].step_range_end = addr; | |
c2d6af84 | 2716 | } |
64386c31 DJ |
2717 | else |
2718 | { | |
64386c31 DJ |
2719 | p = p + 1; |
2720 | } | |
2721 | ||
2722 | if (p[0] == 0) | |
2723 | { | |
95954743 | 2724 | resume_info[i].thread = minus_one_ptid; |
64386c31 DJ |
2725 | default_action = resume_info[i]; |
2726 | ||
2727 | /* Note: we don't increment i here, we'll overwrite this entry | |
2728 | the next time through. */ | |
2729 | } | |
2730 | else if (p[0] == ':') | |
2731 | { | |
95954743 | 2732 | ptid_t ptid = read_ptid (p + 1, &q); |
a06660f7 | 2733 | |
64386c31 DJ |
2734 | if (p == q) |
2735 | goto err; | |
2736 | p = q; | |
2737 | if (p[0] != ';' && p[0] != 0) | |
2738 | goto err; | |
2739 | ||
95954743 | 2740 | resume_info[i].thread = ptid; |
a06660f7 | 2741 | |
64386c31 DJ |
2742 | i++; |
2743 | } | |
2744 | } | |
2745 | ||
2bd7c093 PA |
2746 | if (i < n) |
2747 | resume_info[i] = default_action; | |
64386c31 | 2748 | |
b7ea362b PA |
2749 | resume (resume_info, n); |
2750 | free (resume_info); | |
2751 | return; | |
2752 | ||
2753 | err: | |
2754 | write_enn (own_buf); | |
2755 | free (resume_info); | |
2756 | return; | |
2757 | } | |
2758 | ||
2759 | /* Resume target with ACTIONS, an array of NUM_ACTIONS elements. */ | |
2760 | ||
2761 | static void | |
2762 | resume (struct thread_resume *actions, size_t num_actions) | |
2763 | { | |
bd99dc85 | 2764 | if (!non_stop) |
b7ea362b PA |
2765 | { |
2766 | /* Check if among the threads that GDB wants actioned, there's | |
2767 | one with a pending status to report. If so, skip actually | |
2768 | resuming/stopping and report the pending event | |
2769 | immediately. */ | |
649ebbca DE |
2770 | struct visit_actioned_threads_data data; |
2771 | ||
2772 | data.actions = actions; | |
2773 | data.num_actions = num_actions; | |
2774 | data.callback = handle_pending_status; | |
2775 | if (find_inferior (&all_threads, visit_actioned_threads, &data) != NULL) | |
b7ea362b | 2776 | return; |
bd99dc85 | 2777 | |
b7ea362b PA |
2778 | enable_async_io (); |
2779 | } | |
64386c31 | 2780 | |
b7ea362b | 2781 | (*the_target->resume) (actions, num_actions); |
64386c31 | 2782 | |
bd99dc85 PA |
2783 | if (non_stop) |
2784 | write_ok (own_buf); | |
2785 | else | |
2786 | { | |
95954743 | 2787 | last_ptid = mywait (minus_one_ptid, &last_status, 0, 1); |
ce1a5b52 | 2788 | |
f2faf941 PA |
2789 | if (last_status.kind == TARGET_WAITKIND_NO_RESUMED |
2790 | && !report_no_resumed) | |
fa96cb38 | 2791 | { |
f2faf941 PA |
2792 | /* The client does not support this stop reply. At least |
2793 | return error. */ | |
fa96cb38 PA |
2794 | sprintf (own_buf, "E.No unwaited-for children left."); |
2795 | disable_async_io (); | |
2796 | return; | |
2797 | } | |
2798 | ||
d20a8ad9 | 2799 | if (last_status.kind != TARGET_WAITKIND_EXITED |
fa96cb38 PA |
2800 | && last_status.kind != TARGET_WAITKIND_SIGNALLED |
2801 | && last_status.kind != TARGET_WAITKIND_NO_RESUMED) | |
0bfdf32f | 2802 | current_thread->last_status = last_status; |
d20a8ad9 | 2803 | |
ce1a5b52 PA |
2804 | /* From the client's perspective, all-stop mode always stops all |
2805 | threads implicitly (and the target backend has already done | |
2806 | so by now). Tag all threads as "want-stopped", so we don't | |
2807 | resume them implicitly without the client telling us to. */ | |
2808 | gdb_wants_all_threads_stopped (); | |
bd99dc85 PA |
2809 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
2810 | disable_async_io (); | |
6bd31874 JB |
2811 | |
2812 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
2813 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
bc1e6c81 | 2814 | target_mourn_inferior (last_ptid); |
bd99dc85 | 2815 | } |
64386c31 DJ |
2816 | } |
2817 | ||
2d717e4f | 2818 | /* Attach to a new program. Return 1 if successful, 0 if failure. */ |
5b3da067 | 2819 | static int |
5b1c542e | 2820 | handle_v_attach (char *own_buf) |
2d717e4f DJ |
2821 | { |
2822 | int pid; | |
2823 | ||
2824 | pid = strtol (own_buf + 8, NULL, 16); | |
5b1c542e | 2825 | if (pid != 0 && attach_inferior (pid) == 0) |
2d717e4f | 2826 | { |
aeba519e PA |
2827 | /* Don't report shared library events after attaching, even if |
2828 | some libraries are preloaded. GDB will always poll the | |
2829 | library list. Avoids the "stopped by shared library event" | |
2830 | notice on the GDB side. */ | |
2831 | dlls_changed = 0; | |
bd99dc85 PA |
2832 | |
2833 | if (non_stop) | |
2834 | { | |
2835 | /* In non-stop, we don't send a resume reply. Stop events | |
2836 | will follow up using the normal notification | |
2837 | mechanism. */ | |
2838 | write_ok (own_buf); | |
2839 | } | |
2840 | else | |
2841 | prepare_resume_reply (own_buf, last_ptid, &last_status); | |
2842 | ||
2d717e4f DJ |
2843 | return 1; |
2844 | } | |
2845 | else | |
2846 | { | |
2847 | write_enn (own_buf); | |
2848 | return 0; | |
2849 | } | |
2850 | } | |
2851 | ||
2852 | /* Run a new program. Return 1 if successful, 0 if failure. */ | |
2853 | static int | |
5b1c542e | 2854 | handle_v_run (char *own_buf) |
2d717e4f | 2855 | { |
aef93bd7 | 2856 | char *p, *next_p, **new_argv; |
2d717e4f DJ |
2857 | int i, new_argc; |
2858 | ||
2859 | new_argc = 0; | |
2860 | for (p = own_buf + strlen ("vRun;"); p && *p; p = strchr (p, ';')) | |
2861 | { | |
2862 | p++; | |
2863 | new_argc++; | |
2864 | } | |
2865 | ||
224c3ddb | 2866 | new_argv = (char **) calloc (new_argc + 2, sizeof (char *)); |
aef93bd7 DE |
2867 | if (new_argv == NULL) |
2868 | { | |
2869 | write_enn (own_buf); | |
2870 | return 0; | |
2871 | } | |
2872 | ||
2d717e4f DJ |
2873 | i = 0; |
2874 | for (p = own_buf + strlen ("vRun;"); *p; p = next_p) | |
2875 | { | |
2876 | next_p = strchr (p, ';'); | |
2877 | if (next_p == NULL) | |
2878 | next_p = p + strlen (p); | |
2879 | ||
2880 | if (i == 0 && p == next_p) | |
2881 | new_argv[i] = NULL; | |
2882 | else | |
2883 | { | |
aef93bd7 | 2884 | /* FIXME: Fail request if out of memory instead of dying. */ |
224c3ddb | 2885 | new_argv[i] = (char *) xmalloc (1 + (next_p - p) / 2); |
ff0e980e | 2886 | hex2bin (p, (gdb_byte *) new_argv[i], (next_p - p) / 2); |
2d717e4f DJ |
2887 | new_argv[i][(next_p - p) / 2] = '\0'; |
2888 | } | |
2889 | ||
2890 | if (*next_p) | |
2891 | next_p++; | |
2892 | i++; | |
2893 | } | |
2894 | new_argv[i] = NULL; | |
2895 | ||
2896 | if (new_argv[0] == NULL) | |
2897 | { | |
f142445f DJ |
2898 | /* GDB didn't specify a program to run. Use the program from the |
2899 | last run with the new argument list. */ | |
9b710a42 | 2900 | |
2d717e4f DJ |
2901 | if (program_argv == NULL) |
2902 | { | |
2903 | write_enn (own_buf); | |
b2c04452 | 2904 | freeargv (new_argv); |
2d717e4f DJ |
2905 | return 0; |
2906 | } | |
2907 | ||
aef93bd7 DE |
2908 | new_argv[0] = strdup (program_argv[0]); |
2909 | if (new_argv[0] == NULL) | |
2910 | { | |
aef93bd7 | 2911 | write_enn (own_buf); |
b2c04452 | 2912 | freeargv (new_argv); |
aef93bd7 | 2913 | return 0; |
1b3f6016 | 2914 | } |
2d717e4f | 2915 | } |
f142445f | 2916 | |
aef93bd7 DE |
2917 | /* Free the old argv and install the new one. */ |
2918 | freeargv (program_argv); | |
f142445f | 2919 | program_argv = new_argv; |
2d717e4f | 2920 | |
5b1c542e PA |
2921 | start_inferior (program_argv); |
2922 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
2d717e4f | 2923 | { |
5b1c542e | 2924 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
bd99dc85 PA |
2925 | |
2926 | /* In non-stop, sending a resume reply doesn't set the general | |
2927 | thread, but GDB assumes a vRun sets it (this is so GDB can | |
2928 | query which is the main thread of the new inferior. */ | |
2929 | if (non_stop) | |
2930 | general_thread = last_ptid; | |
2931 | ||
2d717e4f DJ |
2932 | return 1; |
2933 | } | |
2934 | else | |
2935 | { | |
2936 | write_enn (own_buf); | |
2937 | return 0; | |
2938 | } | |
2939 | } | |
2940 | ||
95954743 | 2941 | /* Kill process. Return 1 if successful, 0 if failure. */ |
5b3da067 | 2942 | static int |
95954743 PA |
2943 | handle_v_kill (char *own_buf) |
2944 | { | |
2945 | int pid; | |
2946 | char *p = &own_buf[6]; | |
0f54c268 PM |
2947 | if (multi_process) |
2948 | pid = strtol (p, NULL, 16); | |
2949 | else | |
2950 | pid = signal_pid; | |
95954743 PA |
2951 | if (pid != 0 && kill_inferior (pid) == 0) |
2952 | { | |
2953 | last_status.kind = TARGET_WAITKIND_SIGNALLED; | |
a493e3e2 | 2954 | last_status.value.sig = GDB_SIGNAL_KILL; |
95954743 | 2955 | last_ptid = pid_to_ptid (pid); |
465a859e | 2956 | discard_queued_stop_replies (last_ptid); |
95954743 PA |
2957 | write_ok (own_buf); |
2958 | return 1; | |
2959 | } | |
2960 | else | |
2961 | { | |
2962 | write_enn (own_buf); | |
2963 | return 0; | |
2964 | } | |
2965 | } | |
2966 | ||
64386c31 | 2967 | /* Handle all of the extended 'v' packets. */ |
28170b88 | 2968 | void |
5b1c542e | 2969 | handle_v_requests (char *own_buf, int packet_len, int *new_packet_len) |
64386c31 | 2970 | { |
db42f210 | 2971 | if (!disable_packet_vCont) |
64386c31 | 2972 | { |
de979965 PA |
2973 | if (strcmp (own_buf, "vCtrlC") == 0) |
2974 | { | |
2975 | (*the_target->request_interrupt) (); | |
2976 | write_ok (own_buf); | |
2977 | return; | |
2978 | } | |
2979 | ||
61012eef | 2980 | if (startswith (own_buf, "vCont;")) |
db42f210 | 2981 | { |
5b1c542e | 2982 | handle_v_cont (own_buf); |
db42f210 PA |
2983 | return; |
2984 | } | |
64386c31 | 2985 | |
61012eef | 2986 | if (startswith (own_buf, "vCont?")) |
db42f210 | 2987 | { |
750ce8d1 YQ |
2988 | strcpy (own_buf, "vCont;c;C;t"); |
2989 | ||
21536b36 YQ |
2990 | if (target_supports_hardware_single_step () |
2991 | || target_supports_software_single_step () | |
2992 | || !vCont_supported) | |
750ce8d1 | 2993 | { |
21536b36 YQ |
2994 | /* If target supports single step either by hardware or by |
2995 | software, add actions s and S to the list of supported | |
2996 | actions. On the other hand, if GDB doesn't request the | |
2997 | supported vCont actions in qSupported packet, add s and | |
2998 | S to the list too. */ | |
750ce8d1 YQ |
2999 | own_buf = own_buf + strlen (own_buf); |
3000 | strcpy (own_buf, ";s;S"); | |
3001 | } | |
3002 | ||
c2d6af84 PA |
3003 | if (target_supports_range_stepping ()) |
3004 | { | |
3005 | own_buf = own_buf + strlen (own_buf); | |
3006 | strcpy (own_buf, ";r"); | |
3007 | } | |
db42f210 PA |
3008 | return; |
3009 | } | |
64386c31 DJ |
3010 | } |
3011 | ||
61012eef | 3012 | if (startswith (own_buf, "vFile:") |
a6b151f1 DJ |
3013 | && handle_vFile (own_buf, packet_len, new_packet_len)) |
3014 | return; | |
3015 | ||
61012eef | 3016 | if (startswith (own_buf, "vAttach;")) |
2d717e4f | 3017 | { |
901f9912 | 3018 | if ((!extended_protocol || !multi_process) && target_running ()) |
2d717e4f | 3019 | { |
fd96d250 PA |
3020 | fprintf (stderr, "Already debugging a process\n"); |
3021 | write_enn (own_buf); | |
3022 | return; | |
2d717e4f | 3023 | } |
5b1c542e | 3024 | handle_v_attach (own_buf); |
2d717e4f DJ |
3025 | return; |
3026 | } | |
3027 | ||
61012eef | 3028 | if (startswith (own_buf, "vRun;")) |
2d717e4f | 3029 | { |
901f9912 | 3030 | if ((!extended_protocol || !multi_process) && target_running ()) |
2d717e4f | 3031 | { |
fd96d250 PA |
3032 | fprintf (stderr, "Already debugging a process\n"); |
3033 | write_enn (own_buf); | |
3034 | return; | |
2d717e4f | 3035 | } |
5b1c542e | 3036 | handle_v_run (own_buf); |
2d717e4f DJ |
3037 | return; |
3038 | } | |
3039 | ||
61012eef | 3040 | if (startswith (own_buf, "vKill;")) |
95954743 PA |
3041 | { |
3042 | if (!target_running ()) | |
3043 | { | |
3044 | fprintf (stderr, "No process to kill\n"); | |
3045 | write_enn (own_buf); | |
3046 | return; | |
3047 | } | |
3048 | handle_v_kill (own_buf); | |
3049 | return; | |
3050 | } | |
3051 | ||
14a00470 YQ |
3052 | if (handle_notif_ack (own_buf, packet_len)) |
3053 | return; | |
bd99dc85 | 3054 | |
64386c31 DJ |
3055 | /* Otherwise we didn't know what packet it was. Say we didn't |
3056 | understand it. */ | |
3057 | own_buf[0] = 0; | |
3058 | return; | |
3059 | } | |
3060 | ||
0bfdf32f | 3061 | /* Resume thread and wait for another event. In non-stop mode, |
bd99dc85 PA |
3062 | don't really wait here, but return immediatelly to the event |
3063 | loop. */ | |
1fd7cdc2 | 3064 | static void |
5b1c542e | 3065 | myresume (char *own_buf, int step, int sig) |
64386c31 DJ |
3066 | { |
3067 | struct thread_resume resume_info[2]; | |
3068 | int n = 0; | |
2bd7c093 | 3069 | int valid_cont_thread; |
a20d5e98 | 3070 | |
95954743 PA |
3071 | valid_cont_thread = (!ptid_equal (cont_thread, null_ptid) |
3072 | && !ptid_equal (cont_thread, minus_one_ptid)); | |
2bd7c093 PA |
3073 | |
3074 | if (step || sig || valid_cont_thread) | |
64386c31 | 3075 | { |
fbd5db48 | 3076 | resume_info[0].thread = current_ptid; |
bd99dc85 PA |
3077 | if (step) |
3078 | resume_info[0].kind = resume_step; | |
3079 | else | |
3080 | resume_info[0].kind = resume_continue; | |
64386c31 | 3081 | resume_info[0].sig = sig; |
64386c31 DJ |
3082 | n++; |
3083 | } | |
2bd7c093 PA |
3084 | |
3085 | if (!valid_cont_thread) | |
3086 | { | |
95954743 | 3087 | resume_info[n].thread = minus_one_ptid; |
bd99dc85 | 3088 | resume_info[n].kind = resume_continue; |
2bd7c093 PA |
3089 | resume_info[n].sig = 0; |
3090 | n++; | |
3091 | } | |
64386c31 | 3092 | |
b7ea362b | 3093 | resume (resume_info, n); |
bd99dc85 PA |
3094 | } |
3095 | ||
3096 | /* Callback for for_each_inferior. Make a new stop reply for each | |
3097 | stopped thread. */ | |
3098 | ||
95954743 PA |
3099 | static int |
3100 | queue_stop_reply_callback (struct inferior_list_entry *entry, void *arg) | |
bd99dc85 | 3101 | { |
8336d594 | 3102 | struct thread_info *thread = (struct thread_info *) entry; |
bd99dc85 | 3103 | |
8336d594 PA |
3104 | /* For now, assume targets that don't have this callback also don't |
3105 | manage the thread's last_status field. */ | |
3106 | if (the_target->thread_stopped == NULL) | |
95954743 | 3107 | { |
8d749320 | 3108 | struct vstop_notif *new_notif = XNEW (struct vstop_notif); |
14a00470 YQ |
3109 | |
3110 | new_notif->ptid = entry->id; | |
3111 | new_notif->status = thread->last_status; | |
8336d594 PA |
3112 | /* Pass the last stop reply back to GDB, but don't notify |
3113 | yet. */ | |
14a00470 YQ |
3114 | notif_event_enque (¬if_stop, |
3115 | (struct notif_event *) new_notif); | |
8336d594 PA |
3116 | } |
3117 | else | |
3118 | { | |
3119 | if (thread_stopped (thread)) | |
3120 | { | |
3121 | if (debug_threads) | |
3360c0bf LM |
3122 | { |
3123 | char *status_string | |
3124 | = target_waitstatus_to_string (&thread->last_status); | |
3125 | ||
87ce2a04 DE |
3126 | debug_printf ("Reporting thread %s as already stopped with %s\n", |
3127 | target_pid_to_str (entry->id), | |
3128 | status_string); | |
3360c0bf LM |
3129 | |
3130 | xfree (status_string); | |
3131 | } | |
8336d594 | 3132 | |
d20a8ad9 PA |
3133 | gdb_assert (thread->last_status.kind != TARGET_WAITKIND_IGNORE); |
3134 | ||
8336d594 PA |
3135 | /* Pass the last stop reply back to GDB, but don't notify |
3136 | yet. */ | |
3137 | queue_stop_reply (entry->id, &thread->last_status); | |
3138 | } | |
95954743 PA |
3139 | } |
3140 | ||
3141 | return 0; | |
64386c31 DJ |
3142 | } |
3143 | ||
ce1a5b52 PA |
3144 | /* Set this inferior threads's state as "want-stopped". We won't |
3145 | resume this thread until the client gives us another action for | |
3146 | it. */ | |
8336d594 PA |
3147 | |
3148 | static void | |
3149 | gdb_wants_thread_stopped (struct inferior_list_entry *entry) | |
3150 | { | |
3151 | struct thread_info *thread = (struct thread_info *) entry; | |
3152 | ||
3153 | thread->last_resume_kind = resume_stop; | |
3154 | ||
3155 | if (thread->last_status.kind == TARGET_WAITKIND_IGNORE) | |
3156 | { | |
ce1a5b52 PA |
3157 | /* Most threads are stopped implicitly (all-stop); tag that with |
3158 | signal 0. */ | |
8336d594 | 3159 | thread->last_status.kind = TARGET_WAITKIND_STOPPED; |
a493e3e2 | 3160 | thread->last_status.value.sig = GDB_SIGNAL_0; |
8336d594 PA |
3161 | } |
3162 | } | |
3163 | ||
3164 | /* Set all threads' states as "want-stopped". */ | |
3165 | ||
3166 | static void | |
3167 | gdb_wants_all_threads_stopped (void) | |
3168 | { | |
3169 | for_each_inferior (&all_threads, gdb_wants_thread_stopped); | |
3170 | } | |
3171 | ||
3172 | /* Clear the gdb_detached flag of every process. */ | |
3173 | ||
3174 | static void | |
3175 | gdb_reattached_process (struct inferior_list_entry *entry) | |
3176 | { | |
3177 | struct process_info *process = (struct process_info *) entry; | |
3178 | ||
3179 | process->gdb_detached = 0; | |
3180 | } | |
3181 | ||
b7ea362b PA |
3182 | /* Callback for for_each_inferior. Clear the thread's pending status |
3183 | flag. */ | |
3184 | ||
3185 | static void | |
3186 | clear_pending_status_callback (struct inferior_list_entry *entry) | |
3187 | { | |
3188 | struct thread_info *thread = (struct thread_info *) entry; | |
3189 | ||
3190 | thread->status_pending_p = 0; | |
3191 | } | |
3192 | ||
3193 | /* Callback for for_each_inferior. If the thread is stopped with an | |
3194 | interesting event, mark it as having a pending event. */ | |
3195 | ||
3196 | static void | |
3197 | set_pending_status_callback (struct inferior_list_entry *entry) | |
3198 | { | |
3199 | struct thread_info *thread = (struct thread_info *) entry; | |
3200 | ||
3201 | if (thread->last_status.kind != TARGET_WAITKIND_STOPPED | |
3202 | || (thread->last_status.value.sig != GDB_SIGNAL_0 | |
3203 | /* A breakpoint, watchpoint or finished step from a previous | |
3204 | GDB run isn't considered interesting for a new GDB run. | |
3205 | If we left those pending, the new GDB could consider them | |
3206 | random SIGTRAPs. This leaves out real async traps. We'd | |
3207 | have to peek into the (target-specific) siginfo to | |
3208 | distinguish those. */ | |
3209 | && thread->last_status.value.sig != GDB_SIGNAL_TRAP)) | |
3210 | thread->status_pending_p = 1; | |
3211 | } | |
3212 | ||
3213 | /* Callback for find_inferior. Return true if ENTRY (a thread) has a | |
3214 | pending status to report to GDB. */ | |
3215 | ||
3216 | static int | |
3217 | find_status_pending_thread_callback (struct inferior_list_entry *entry, void *data) | |
3218 | { | |
3219 | struct thread_info *thread = (struct thread_info *) entry; | |
3220 | ||
3221 | return thread->status_pending_p; | |
3222 | } | |
3223 | ||
5b1c542e PA |
3224 | /* Status handler for the '?' packet. */ |
3225 | ||
3226 | static void | |
3227 | handle_status (char *own_buf) | |
3228 | { | |
8336d594 PA |
3229 | /* GDB is connected, don't forward events to the target anymore. */ |
3230 | for_each_inferior (&all_processes, gdb_reattached_process); | |
bd99dc85 PA |
3231 | |
3232 | /* In non-stop mode, we must send a stop reply for each stopped | |
3233 | thread. In all-stop mode, just send one for the first stopped | |
3234 | thread we find. */ | |
3235 | ||
3236 | if (non_stop) | |
3237 | { | |
8336d594 | 3238 | find_inferior (&all_threads, queue_stop_reply_callback, NULL); |
bd99dc85 PA |
3239 | |
3240 | /* The first is sent immediatly. OK is sent if there is no | |
3241 | stopped thread, which is the same handling of the vStopped | |
3242 | packet (by design). */ | |
14a00470 | 3243 | notif_write_event (¬if_stop, own_buf); |
bd99dc85 | 3244 | } |
5b1c542e | 3245 | else |
bd99dc85 | 3246 | { |
b7ea362b PA |
3247 | struct inferior_list_entry *thread = NULL; |
3248 | ||
7984d532 | 3249 | pause_all (0); |
fa593d66 | 3250 | stabilize_threads (); |
8336d594 PA |
3251 | gdb_wants_all_threads_stopped (); |
3252 | ||
b7ea362b PA |
3253 | /* We can only report one status, but we might be coming out of |
3254 | non-stop -- if more than one thread is stopped with | |
3255 | interesting events, leave events for the threads we're not | |
3256 | reporting now pending. They'll be reported the next time the | |
3257 | threads are resumed. Start by marking all interesting events | |
3258 | as pending. */ | |
3259 | for_each_inferior (&all_threads, set_pending_status_callback); | |
3260 | ||
3261 | /* Prefer the last thread that reported an event to GDB (even if | |
3262 | that was a GDB_SIGNAL_TRAP). */ | |
3263 | if (last_status.kind != TARGET_WAITKIND_IGNORE | |
3264 | && last_status.kind != TARGET_WAITKIND_EXITED | |
3265 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
3266 | thread = find_inferior_id (&all_threads, last_ptid); | |
3267 | ||
3268 | /* If the last event thread is not found for some reason, look | |
3269 | for some other thread that might have an event to report. */ | |
3270 | if (thread == NULL) | |
3271 | thread = find_inferior (&all_threads, | |
3272 | find_status_pending_thread_callback, NULL); | |
3273 | ||
3274 | /* If we're still out of luck, simply pick the first thread in | |
3275 | the thread list. */ | |
3276 | if (thread == NULL) | |
649ebbca | 3277 | thread = get_first_inferior (&all_threads); |
b7ea362b PA |
3278 | |
3279 | if (thread != NULL) | |
8336d594 | 3280 | { |
b7ea362b PA |
3281 | struct thread_info *tp = (struct thread_info *) thread; |
3282 | ||
3283 | /* We're reporting this event, so it's no longer | |
3284 | pending. */ | |
3285 | tp->status_pending_p = 0; | |
3286 | ||
3287 | /* GDB assumes the current thread is the thread we're | |
3288 | reporting the status for. */ | |
3289 | general_thread = thread->id; | |
0bfdf32f | 3290 | set_desired_thread (1); |
8336d594 | 3291 | |
b7ea362b PA |
3292 | gdb_assert (tp->last_status.kind != TARGET_WAITKIND_IGNORE); |
3293 | prepare_resume_reply (own_buf, tp->entry.id, &tp->last_status); | |
8336d594 | 3294 | } |
bd99dc85 PA |
3295 | else |
3296 | strcpy (own_buf, "W00"); | |
3297 | } | |
5b1c542e PA |
3298 | } |
3299 | ||
dd24457d DJ |
3300 | static void |
3301 | gdbserver_version (void) | |
3302 | { | |
c16158bc | 3303 | printf ("GNU gdbserver %s%s\n" |
edd88788 | 3304 | "Copyright (C) 2016 Free Software Foundation, Inc.\n" |
493e2a69 MS |
3305 | "gdbserver is free software, covered by the " |
3306 | "GNU General Public License.\n" | |
dd24457d | 3307 | "This gdbserver was configured as \"%s\"\n", |
c16158bc | 3308 | PKGVERSION, version, host_name); |
dd24457d DJ |
3309 | } |
3310 | ||
0bc68c49 | 3311 | static void |
c16158bc | 3312 | gdbserver_usage (FILE *stream) |
0bc68c49 | 3313 | { |
c16158bc JM |
3314 | fprintf (stream, "Usage:\tgdbserver [OPTIONS] COMM PROG [ARGS ...]\n" |
3315 | "\tgdbserver [OPTIONS] --attach COMM PID\n" | |
3316 | "\tgdbserver [OPTIONS] --multi COMM\n" | |
3317 | "\n" | |
41f98f02 PA |
3318 | "COMM may either be a tty device (for serial debugging),\n" |
3319 | "HOST:PORT to listen for a TCP connection, or '-' or 'stdio' to use \n" | |
3320 | "stdin/stdout of gdbserver.\n" | |
3321 | "PROG is the executable program. ARGS are arguments passed to inferior.\n" | |
3322 | "PID is the process ID to attach to, when --attach is specified.\n" | |
3323 | "\n" | |
3324 | "Operating modes:\n" | |
3325 | "\n" | |
3326 | " --attach Attach to running process PID.\n" | |
3327 | " --multi Start server without a specific program, and\n" | |
3328 | " only quit when explicitly commanded.\n" | |
3329 | " --once Exit after the first connection has closed.\n" | |
3330 | " --help Print this message and then exit.\n" | |
3331 | " --version Display version information and exit.\n" | |
3332 | "\n" | |
3333 | "Other options:\n" | |
3334 | "\n" | |
3335 | " --wrapper WRAPPER -- Run WRAPPER to start new programs.\n" | |
3336 | " --disable-randomization\n" | |
3337 | " Run PROG with address space randomization disabled.\n" | |
3338 | " --no-disable-randomization\n" | |
3339 | " Don't disable address space randomization when\n" | |
3340 | " starting PROG.\n" | |
3341 | "\n" | |
3342 | "Debug options:\n" | |
c16158bc | 3343 | "\n" |
62709adf | 3344 | " --debug Enable general debugging output.\n" |
87ce2a04 DE |
3345 | " --debug-format=opt1[,opt2,...]\n" |
3346 | " Specify extra content in debugging output.\n" | |
3347 | " Options:\n" | |
3348 | " all\n" | |
3349 | " none\n" | |
87ce2a04 | 3350 | " timestamp\n" |
62709adf | 3351 | " --remote-debug Enable remote protocol debugging output.\n" |
41f98f02 PA |
3352 | " --disable-packet=opt1[,opt2,...]\n" |
3353 | " Disable support for RSP packets or features.\n" | |
3354 | " Options:\n" | |
3355 | " vCont, Tthread, qC, qfThreadInfo and \n" | |
3356 | " threads (disable all threading packets).\n" | |
3357 | "\n" | |
3358 | "For more information, consult the GDB manual (available as on-line \n" | |
3359 | "info or a printed manual).\n"); | |
c16158bc JM |
3360 | if (REPORT_BUGS_TO[0] && stream == stdout) |
3361 | fprintf (stream, "Report bugs to \"%s\".\n", REPORT_BUGS_TO); | |
0bc68c49 DJ |
3362 | } |
3363 | ||
db42f210 PA |
3364 | static void |
3365 | gdbserver_show_disableable (FILE *stream) | |
3366 | { | |
3367 | fprintf (stream, "Disableable packets:\n" | |
3368 | " vCont \tAll vCont packets\n" | |
3369 | " qC \tQuerying the current thread\n" | |
3370 | " qfThreadInfo\tThread listing\n" | |
493e2a69 MS |
3371 | " Tthread \tPassing the thread specifier in the " |
3372 | "T stop reply packet\n" | |
db42f210 PA |
3373 | " threads \tAll of the above\n"); |
3374 | } | |
3375 | ||
3376 | ||
2d717e4f DJ |
3377 | #undef require_running |
3378 | #define require_running(BUF) \ | |
3379 | if (!target_running ()) \ | |
3380 | { \ | |
3381 | write_enn (BUF); \ | |
3382 | break; \ | |
3383 | } | |
3384 | ||
95954743 PA |
3385 | static int |
3386 | first_thread_of (struct inferior_list_entry *entry, void *args) | |
3387 | { | |
3388 | int pid = * (int *) args; | |
3389 | ||
3390 | if (ptid_get_pid (entry->id) == pid) | |
3391 | return 1; | |
3392 | ||
3393 | return 0; | |
3394 | } | |
3395 | ||
3396 | static void | |
3397 | kill_inferior_callback (struct inferior_list_entry *entry) | |
3398 | { | |
3399 | struct process_info *process = (struct process_info *) entry; | |
80894984 | 3400 | int pid = ptid_get_pid (process->entry.id); |
95954743 PA |
3401 | |
3402 | kill_inferior (pid); | |
465a859e | 3403 | discard_queued_stop_replies (pid_to_ptid (pid)); |
95954743 PA |
3404 | } |
3405 | ||
9f767825 DE |
3406 | /* Callback for for_each_inferior to detach or kill the inferior, |
3407 | depending on whether we attached to it or not. | |
3408 | We inform the user whether we're detaching or killing the process | |
3409 | as this is only called when gdbserver is about to exit. */ | |
3410 | ||
95954743 PA |
3411 | static void |
3412 | detach_or_kill_inferior_callback (struct inferior_list_entry *entry) | |
3413 | { | |
3414 | struct process_info *process = (struct process_info *) entry; | |
80894984 | 3415 | int pid = ptid_get_pid (process->entry.id); |
95954743 PA |
3416 | |
3417 | if (process->attached) | |
3418 | detach_inferior (pid); | |
3419 | else | |
3420 | kill_inferior (pid); | |
3421 | ||
465a859e | 3422 | discard_queued_stop_replies (pid_to_ptid (pid)); |
95954743 PA |
3423 | } |
3424 | ||
9f767825 DE |
3425 | /* for_each_inferior callback for detach_or_kill_for_exit to print |
3426 | the pids of started inferiors. */ | |
3427 | ||
3428 | static void | |
3429 | print_started_pid (struct inferior_list_entry *entry) | |
3430 | { | |
3431 | struct process_info *process = (struct process_info *) entry; | |
3432 | ||
3433 | if (! process->attached) | |
3434 | { | |
80894984 | 3435 | int pid = ptid_get_pid (process->entry.id); |
9f767825 DE |
3436 | fprintf (stderr, " %d", pid); |
3437 | } | |
3438 | } | |
3439 | ||
3440 | /* for_each_inferior callback for detach_or_kill_for_exit to print | |
3441 | the pids of attached inferiors. */ | |
3442 | ||
3443 | static void | |
3444 | print_attached_pid (struct inferior_list_entry *entry) | |
3445 | { | |
3446 | struct process_info *process = (struct process_info *) entry; | |
3447 | ||
3448 | if (process->attached) | |
3449 | { | |
80894984 | 3450 | int pid = ptid_get_pid (process->entry.id); |
9f767825 DE |
3451 | fprintf (stderr, " %d", pid); |
3452 | } | |
3453 | } | |
3454 | ||
3455 | /* Call this when exiting gdbserver with possible inferiors that need | |
3456 | to be killed or detached from. */ | |
3457 | ||
3458 | static void | |
3459 | detach_or_kill_for_exit (void) | |
3460 | { | |
3461 | /* First print a list of the inferiors we will be killing/detaching. | |
3462 | This is to assist the user, for example, in case the inferior unexpectedly | |
3463 | dies after we exit: did we screw up or did the inferior exit on its own? | |
3464 | Having this info will save some head-scratching. */ | |
3465 | ||
3466 | if (have_started_inferiors_p ()) | |
3467 | { | |
3468 | fprintf (stderr, "Killing process(es):"); | |
3469 | for_each_inferior (&all_processes, print_started_pid); | |
3470 | fprintf (stderr, "\n"); | |
3471 | } | |
3472 | if (have_attached_inferiors_p ()) | |
3473 | { | |
3474 | fprintf (stderr, "Detaching process(es):"); | |
3475 | for_each_inferior (&all_processes, print_attached_pid); | |
3476 | fprintf (stderr, "\n"); | |
3477 | } | |
3478 | ||
3479 | /* Now we can kill or detach the inferiors. */ | |
3480 | ||
3481 | for_each_inferior (&all_processes, detach_or_kill_inferior_callback); | |
3482 | } | |
3483 | ||
860789c7 GB |
3484 | /* Value that will be passed to exit(3) when gdbserver exits. */ |
3485 | static int exit_code; | |
3486 | ||
3487 | /* Cleanup version of detach_or_kill_for_exit. */ | |
3488 | ||
3489 | static void | |
3490 | detach_or_kill_for_exit_cleanup (void *ignore) | |
3491 | { | |
860789c7 | 3492 | |
492d29ea | 3493 | TRY |
860789c7 GB |
3494 | { |
3495 | detach_or_kill_for_exit (); | |
3496 | } | |
3497 | ||
492d29ea | 3498 | CATCH (exception, RETURN_MASK_ALL) |
860789c7 GB |
3499 | { |
3500 | fflush (stdout); | |
3501 | fprintf (stderr, "Detach or kill failed: %s\n", exception.message); | |
3502 | exit_code = 1; | |
3503 | } | |
492d29ea | 3504 | END_CATCH |
860789c7 GB |
3505 | } |
3506 | ||
3507 | /* Main function. This is called by the real "main" function, | |
3508 | wrapped in a TRY_CATCH that handles any uncaught exceptions. */ | |
3509 | ||
3510 | static void ATTRIBUTE_NORETURN | |
3511 | captured_main (int argc, char *argv[]) | |
c906108c | 3512 | { |
0729219d DJ |
3513 | int bad_attach; |
3514 | int pid; | |
2d717e4f DJ |
3515 | char *arg_end, *port; |
3516 | char **next_arg = &argv[1]; | |
89dc0afd JK |
3517 | volatile int multi_mode = 0; |
3518 | volatile int attach = 0; | |
2d717e4f | 3519 | int was_running; |
c906108c | 3520 | |
2d717e4f | 3521 | while (*next_arg != NULL && **next_arg == '-') |
dd24457d | 3522 | { |
2d717e4f DJ |
3523 | if (strcmp (*next_arg, "--version") == 0) |
3524 | { | |
3525 | gdbserver_version (); | |
3526 | exit (0); | |
3527 | } | |
3528 | else if (strcmp (*next_arg, "--help") == 0) | |
3529 | { | |
c16158bc | 3530 | gdbserver_usage (stdout); |
2d717e4f DJ |
3531 | exit (0); |
3532 | } | |
3533 | else if (strcmp (*next_arg, "--attach") == 0) | |
3534 | attach = 1; | |
3535 | else if (strcmp (*next_arg, "--multi") == 0) | |
3536 | multi_mode = 1; | |
ccd213ac DJ |
3537 | else if (strcmp (*next_arg, "--wrapper") == 0) |
3538 | { | |
3539 | next_arg++; | |
3540 | ||
3541 | wrapper_argv = next_arg; | |
3542 | while (*next_arg != NULL && strcmp (*next_arg, "--") != 0) | |
3543 | next_arg++; | |
3544 | ||
3545 | if (next_arg == wrapper_argv || *next_arg == NULL) | |
3546 | { | |
c16158bc | 3547 | gdbserver_usage (stderr); |
ccd213ac DJ |
3548 | exit (1); |
3549 | } | |
3550 | ||
3551 | /* Consume the "--". */ | |
3552 | *next_arg = NULL; | |
3553 | } | |
2d717e4f DJ |
3554 | else if (strcmp (*next_arg, "--debug") == 0) |
3555 | debug_threads = 1; | |
61012eef | 3556 | else if (startswith (*next_arg, "--debug-format=")) |
87ce2a04 DE |
3557 | { |
3558 | char *error_msg | |
3559 | = parse_debug_format_options ((*next_arg) | |
3560 | + sizeof ("--debug-format=") - 1, 0); | |
3561 | ||
3562 | if (error_msg != NULL) | |
3563 | { | |
3564 | fprintf (stderr, "%s", error_msg); | |
3565 | exit (1); | |
3566 | } | |
3567 | } | |
62709adf PA |
3568 | else if (strcmp (*next_arg, "--remote-debug") == 0) |
3569 | remote_debug = 1; | |
db42f210 PA |
3570 | else if (strcmp (*next_arg, "--disable-packet") == 0) |
3571 | { | |
3572 | gdbserver_show_disableable (stdout); | |
3573 | exit (0); | |
3574 | } | |
61012eef | 3575 | else if (startswith (*next_arg, "--disable-packet=")) |
db42f210 PA |
3576 | { |
3577 | char *packets, *tok; | |
3578 | ||
3579 | packets = *next_arg += sizeof ("--disable-packet=") - 1; | |
3580 | for (tok = strtok (packets, ","); | |
3581 | tok != NULL; | |
3582 | tok = strtok (NULL, ",")) | |
3583 | { | |
3584 | if (strcmp ("vCont", tok) == 0) | |
3585 | disable_packet_vCont = 1; | |
3586 | else if (strcmp ("Tthread", tok) == 0) | |
3587 | disable_packet_Tthread = 1; | |
3588 | else if (strcmp ("qC", tok) == 0) | |
3589 | disable_packet_qC = 1; | |
3590 | else if (strcmp ("qfThreadInfo", tok) == 0) | |
3591 | disable_packet_qfThreadInfo = 1; | |
3592 | else if (strcmp ("threads", tok) == 0) | |
3593 | { | |
3594 | disable_packet_vCont = 1; | |
3595 | disable_packet_Tthread = 1; | |
3596 | disable_packet_qC = 1; | |
3597 | disable_packet_qfThreadInfo = 1; | |
3598 | } | |
3599 | else | |
3600 | { | |
3601 | fprintf (stderr, "Don't know how to disable \"%s\".\n\n", | |
3602 | tok); | |
3603 | gdbserver_show_disableable (stderr); | |
3604 | exit (1); | |
3605 | } | |
3606 | } | |
3607 | } | |
e0f9f062 DE |
3608 | else if (strcmp (*next_arg, "-") == 0) |
3609 | { | |
3610 | /* "-" specifies a stdio connection and is a form of port | |
3611 | specification. */ | |
3612 | *next_arg = STDIO_CONNECTION_NAME; | |
3613 | break; | |
3614 | } | |
03583c20 UW |
3615 | else if (strcmp (*next_arg, "--disable-randomization") == 0) |
3616 | disable_randomization = 1; | |
3617 | else if (strcmp (*next_arg, "--no-disable-randomization") == 0) | |
3618 | disable_randomization = 0; | |
03f2bd59 JK |
3619 | else if (strcmp (*next_arg, "--once") == 0) |
3620 | run_once = 1; | |
2d717e4f DJ |
3621 | else |
3622 | { | |
3623 | fprintf (stderr, "Unknown argument: %s\n", *next_arg); | |
3624 | exit (1); | |
3625 | } | |
dd24457d | 3626 | |
2d717e4f DJ |
3627 | next_arg++; |
3628 | continue; | |
dd24457d DJ |
3629 | } |
3630 | ||
2d717e4f DJ |
3631 | port = *next_arg; |
3632 | next_arg++; | |
3633 | if (port == NULL || (!attach && !multi_mode && *next_arg == NULL)) | |
3634 | { | |
c16158bc | 3635 | gdbserver_usage (stderr); |
2d717e4f DJ |
3636 | exit (1); |
3637 | } | |
3638 | ||
602e3198 JK |
3639 | /* Remember stdio descriptors. LISTEN_DESC must not be listed, it will be |
3640 | opened by remote_prepare. */ | |
3641 | notice_open_fds (); | |
3642 | ||
f348d89a PA |
3643 | save_original_signals_state (); |
3644 | ||
e0f9f062 DE |
3645 | /* We need to know whether the remote connection is stdio before |
3646 | starting the inferior. Inferiors created in this scenario have | |
3647 | stdin,stdout redirected. So do this here before we call | |
3648 | start_inferior. */ | |
3649 | remote_prepare (port); | |
3650 | ||
0729219d DJ |
3651 | bad_attach = 0; |
3652 | pid = 0; | |
2d717e4f DJ |
3653 | |
3654 | /* --attach used to come after PORT, so allow it there for | |
3655 | compatibility. */ | |
3656 | if (*next_arg != NULL && strcmp (*next_arg, "--attach") == 0) | |
45b7b345 | 3657 | { |
2d717e4f DJ |
3658 | attach = 1; |
3659 | next_arg++; | |
45b7b345 DJ |
3660 | } |
3661 | ||
2d717e4f DJ |
3662 | if (attach |
3663 | && (*next_arg == NULL | |
3664 | || (*next_arg)[0] == '\0' | |
3665 | || (pid = strtoul (*next_arg, &arg_end, 0)) == 0 | |
3666 | || *arg_end != '\0' | |
3667 | || next_arg[1] != NULL)) | |
3668 | bad_attach = 1; | |
3669 | ||
3670 | if (bad_attach) | |
dd24457d | 3671 | { |
c16158bc | 3672 | gdbserver_usage (stderr); |
dd24457d DJ |
3673 | exit (1); |
3674 | } | |
c906108c | 3675 | |
a20d5e98 | 3676 | initialize_async_io (); |
4ce44c66 | 3677 | initialize_low (); |
60f662b0 | 3678 | initialize_event_loop (); |
219f2f23 PA |
3679 | if (target_supports_tracepoints ()) |
3680 | initialize_tracepoint (); | |
465a859e | 3681 | initialize_notif (); |
4ce44c66 | 3682 | |
224c3ddb SM |
3683 | own_buf = (char *) xmalloc (PBUFSIZ + 1); |
3684 | mem_buf = (unsigned char *) xmalloc (PBUFSIZ); | |
0a30fbc4 | 3685 | |
2d717e4f | 3686 | if (pid == 0 && *next_arg != NULL) |
45b7b345 | 3687 | { |
2d717e4f DJ |
3688 | int i, n; |
3689 | ||
3690 | n = argc - (next_arg - argv); | |
224c3ddb | 3691 | program_argv = XNEWVEC (char *, n + 1); |
2d717e4f | 3692 | for (i = 0; i < n; i++) |
bca929d3 | 3693 | program_argv[i] = xstrdup (next_arg[i]); |
2d717e4f DJ |
3694 | program_argv[i] = NULL; |
3695 | ||
45b7b345 | 3696 | /* Wait till we are at first instruction in program. */ |
5b1c542e | 3697 | start_inferior (program_argv); |
c906108c | 3698 | |
c588c53c MS |
3699 | /* We are now (hopefully) stopped at the first instruction of |
3700 | the target process. This assumes that the target process was | |
3701 | successfully created. */ | |
45b7b345 | 3702 | } |
2d717e4f DJ |
3703 | else if (pid != 0) |
3704 | { | |
5b1c542e | 3705 | if (attach_inferior (pid) == -1) |
2d717e4f DJ |
3706 | error ("Attaching not supported on this target"); |
3707 | ||
3708 | /* Otherwise succeeded. */ | |
3709 | } | |
45b7b345 DJ |
3710 | else |
3711 | { | |
5b1c542e PA |
3712 | last_status.kind = TARGET_WAITKIND_EXITED; |
3713 | last_status.value.integer = 0; | |
95954743 | 3714 | last_ptid = minus_one_ptid; |
45b7b345 | 3715 | } |
860789c7 | 3716 | make_cleanup (detach_or_kill_for_exit_cleanup, NULL); |
c906108c | 3717 | |
311de423 PA |
3718 | /* Don't report shared library events on the initial connection, |
3719 | even if some libraries are preloaded. Avoids the "stopped by | |
3720 | shared library event" notice on gdb side. */ | |
3721 | dlls_changed = 0; | |
3722 | ||
5b1c542e PA |
3723 | if (last_status.kind == TARGET_WAITKIND_EXITED |
3724 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2d717e4f DJ |
3725 | was_running = 0; |
3726 | else | |
3727 | was_running = 1; | |
3728 | ||
3729 | if (!was_running && !multi_mode) | |
860789c7 | 3730 | error ("No program to debug"); |
c588c53c | 3731 | |
c906108c SS |
3732 | while (1) |
3733 | { | |
860789c7 | 3734 | |
a6f3e723 | 3735 | noack_mode = 0; |
95954743 | 3736 | multi_process = 0; |
89245bc0 DB |
3737 | report_fork_events = 0; |
3738 | report_vfork_events = 0; | |
94585166 | 3739 | report_exec_events = 0; |
8336d594 PA |
3740 | /* Be sure we're out of tfind mode. */ |
3741 | current_traceframe = -1; | |
40e91bc7 | 3742 | cont_thread = null_ptid; |
1ec68e26 PA |
3743 | swbreak_feature = 0; |
3744 | hwbreak_feature = 0; | |
750ce8d1 | 3745 | vCont_supported = 0; |
bd99dc85 | 3746 | |
2d717e4f | 3747 | remote_open (port); |
c906108c | 3748 | |
492d29ea | 3749 | TRY |
2d717e4f | 3750 | { |
860789c7 GB |
3751 | /* Wait for events. This will return when all event sources |
3752 | are removed from the event loop. */ | |
3753 | start_event_loop (); | |
2d717e4f | 3754 | |
860789c7 | 3755 | /* If an exit was requested (using the "monitor exit" |
fddedbe6 PA |
3756 | command), terminate now. */ |
3757 | if (exit_requested) | |
3758 | throw_quit ("Quit"); | |
3759 | ||
3760 | /* The only other way to get here is for getpkt to fail: | |
3761 | ||
3762 | - If --once was specified, we're done. | |
bd99dc85 | 3763 | |
fddedbe6 PA |
3764 | - If not in extended-remote mode, and we're no longer |
3765 | debugging anything, simply exit: GDB has disconnected | |
3766 | after processing the last process exit. | |
3767 | ||
3768 | - Otherwise, close the connection and reopen it at the | |
3769 | top of the loop. */ | |
3770 | if (run_once || (!extended_protocol && !target_running ())) | |
860789c7 | 3771 | throw_quit ("Quit"); |
bd99dc85 | 3772 | |
860789c7 GB |
3773 | fprintf (stderr, |
3774 | "Remote side has terminated connection. " | |
3775 | "GDBserver will reopen the connection.\n"); | |
8336d594 | 3776 | |
860789c7 GB |
3777 | /* Get rid of any pending statuses. An eventual reconnection |
3778 | (by the same GDB instance or another) will refresh all its | |
3779 | state from scratch. */ | |
465a859e | 3780 | discard_queued_stop_replies (minus_one_ptid); |
860789c7 GB |
3781 | for_each_inferior (&all_threads, |
3782 | clear_pending_status_callback); | |
9939e131 | 3783 | |
860789c7 | 3784 | if (tracing) |
8336d594 | 3785 | { |
860789c7 | 3786 | if (disconnected_tracing) |
8336d594 | 3787 | { |
860789c7 GB |
3788 | /* Try to enable non-stop/async mode, so we we can |
3789 | both wait for an async socket accept, and handle | |
3790 | async target events simultaneously. There's also | |
3791 | no point either in having the target always stop | |
3792 | all threads, when we're going to pass signals | |
3793 | down without informing GDB. */ | |
3794 | if (!non_stop) | |
3795 | { | |
3796 | if (start_non_stop (1)) | |
3797 | non_stop = 1; | |
3798 | ||
3799 | /* Detaching implicitly resumes all threads; | |
3800 | simply disconnecting does not. */ | |
3801 | } | |
3802 | } | |
3803 | else | |
3804 | { | |
3805 | fprintf (stderr, | |
3806 | "Disconnected tracing disabled; " | |
3807 | "stopping trace run.\n"); | |
3808 | stop_tracing (); | |
8336d594 PA |
3809 | } |
3810 | } | |
860789c7 | 3811 | } |
492d29ea | 3812 | CATCH (exception, RETURN_MASK_ERROR) |
860789c7 | 3813 | { |
608a1e46 PA |
3814 | fflush (stdout); |
3815 | fprintf (stderr, "gdbserver: %s\n", exception.message); | |
3816 | ||
860789c7 | 3817 | if (response_needed) |
8336d594 | 3818 | { |
860789c7 GB |
3819 | write_enn (own_buf); |
3820 | putpkt (own_buf); | |
8336d594 | 3821 | } |
608a1e46 PA |
3822 | |
3823 | if (run_once) | |
3824 | throw_quit ("Quit"); | |
8336d594 | 3825 | } |
492d29ea | 3826 | END_CATCH |
bd99dc85 PA |
3827 | } |
3828 | } | |
01f9e8fa | 3829 | |
860789c7 GB |
3830 | /* Main function. */ |
3831 | ||
3832 | int | |
3833 | main (int argc, char *argv[]) | |
3834 | { | |
860789c7 | 3835 | |
492d29ea | 3836 | TRY |
860789c7 GB |
3837 | { |
3838 | captured_main (argc, argv); | |
3839 | } | |
492d29ea | 3840 | CATCH (exception, RETURN_MASK_ALL) |
860789c7 | 3841 | { |
492d29ea PA |
3842 | if (exception.reason == RETURN_ERROR) |
3843 | { | |
3844 | fflush (stdout); | |
3845 | fprintf (stderr, "%s\n", exception.message); | |
3846 | fprintf (stderr, "Exiting\n"); | |
3847 | exit_code = 1; | |
3848 | } | |
3849 | ||
3850 | exit (exit_code); | |
860789c7 | 3851 | } |
492d29ea | 3852 | END_CATCH |
860789c7 | 3853 | |
492d29ea | 3854 | gdb_assert_not_reached ("captured_main should never return"); |
860789c7 GB |
3855 | } |
3856 | ||
802e8e6d PA |
3857 | /* Process options coming from Z packets for a breakpoint. PACKET is |
3858 | the packet buffer. *PACKET is updated to point to the first char | |
3859 | after the last processed option. */ | |
9f3a5c85 LM |
3860 | |
3861 | static void | |
9aa76cd0 | 3862 | process_point_options (struct gdb_breakpoint *bp, char **packet) |
9f3a5c85 LM |
3863 | { |
3864 | char *dataptr = *packet; | |
d3ce09f5 | 3865 | int persist; |
9f3a5c85 LM |
3866 | |
3867 | /* Check if data has the correct format. */ | |
3868 | if (*dataptr != ';') | |
3869 | return; | |
3870 | ||
3871 | dataptr++; | |
3872 | ||
3873 | while (*dataptr) | |
3874 | { | |
d3ce09f5 SS |
3875 | if (*dataptr == ';') |
3876 | ++dataptr; | |
3877 | ||
3878 | if (*dataptr == 'X') | |
9f3a5c85 | 3879 | { |
d3ce09f5 | 3880 | /* Conditional expression. */ |
d171ca78 | 3881 | if (debug_threads) |
87ce2a04 | 3882 | debug_printf ("Found breakpoint condition.\n"); |
802e8e6d | 3883 | if (!add_breakpoint_condition (bp, &dataptr)) |
8424cc97 | 3884 | dataptr = strchrnul (dataptr, ';'); |
d3ce09f5 | 3885 | } |
61012eef | 3886 | else if (startswith (dataptr, "cmds:")) |
d3ce09f5 SS |
3887 | { |
3888 | dataptr += strlen ("cmds:"); | |
3889 | if (debug_threads) | |
87ce2a04 | 3890 | debug_printf ("Found breakpoint commands %s.\n", dataptr); |
d3ce09f5 SS |
3891 | persist = (*dataptr == '1'); |
3892 | dataptr += 2; | |
802e8e6d | 3893 | if (add_breakpoint_commands (bp, &dataptr, persist)) |
8424cc97 | 3894 | dataptr = strchrnul (dataptr, ';'); |
d3ce09f5 SS |
3895 | } |
3896 | else | |
3897 | { | |
d3ce09f5 SS |
3898 | fprintf (stderr, "Unknown token %c, ignoring.\n", |
3899 | *dataptr); | |
78a99e91 | 3900 | /* Skip tokens until we find one that we recognize. */ |
8424cc97 | 3901 | dataptr = strchrnul (dataptr, ';'); |
9f3a5c85 | 3902 | } |
9f3a5c85 LM |
3903 | } |
3904 | *packet = dataptr; | |
3905 | } | |
3906 | ||
bd99dc85 PA |
3907 | /* Event loop callback that handles a serial event. The first byte in |
3908 | the serial buffer gets us here. We expect characters to arrive at | |
3909 | a brisk pace, so we read the rest of the packet with a blocking | |
3910 | getpkt call. */ | |
01f9e8fa | 3911 | |
8336d594 | 3912 | static int |
bd99dc85 PA |
3913 | process_serial_event (void) |
3914 | { | |
3915 | char ch; | |
3916 | int i = 0; | |
3917 | int signal; | |
3918 | unsigned int len; | |
764880b7 | 3919 | int res; |
bd99dc85 | 3920 | CORE_ADDR mem_addr; |
95954743 | 3921 | int pid; |
bd99dc85 PA |
3922 | unsigned char sig; |
3923 | int packet_len; | |
3924 | int new_packet_len = -1; | |
3925 | ||
bd99dc85 PA |
3926 | disable_async_io (); |
3927 | ||
3928 | response_needed = 0; | |
3929 | packet_len = getpkt (own_buf); | |
3930 | if (packet_len <= 0) | |
3931 | { | |
bd99dc85 | 3932 | remote_close (); |
8336d594 PA |
3933 | /* Force an event loop break. */ |
3934 | return -1; | |
bd99dc85 PA |
3935 | } |
3936 | response_needed = 1; | |
3937 | ||
3938 | i = 0; | |
3939 | ch = own_buf[i++]; | |
3940 | switch (ch) | |
3941 | { | |
3942 | case 'q': | |
3943 | handle_query (own_buf, packet_len, &new_packet_len); | |
3944 | break; | |
3945 | case 'Q': | |
3946 | handle_general_set (own_buf); | |
3947 | break; | |
3948 | case 'D': | |
3949 | require_running (own_buf); | |
95954743 PA |
3950 | |
3951 | if (multi_process) | |
3952 | { | |
3953 | i++; /* skip ';' */ | |
3954 | pid = strtol (&own_buf[i], NULL, 16); | |
3955 | } | |
3956 | else | |
fbd5db48 | 3957 | pid = ptid_get_pid (current_ptid); |
95954743 | 3958 | |
d3ce09f5 | 3959 | if ((tracing && disconnected_tracing) || any_persistent_commands ()) |
8336d594 | 3960 | { |
8336d594 PA |
3961 | struct process_info *process = find_process_pid (pid); |
3962 | ||
3963 | if (process == NULL) | |
3964 | { | |
3965 | write_enn (own_buf); | |
3966 | break; | |
3967 | } | |
3968 | ||
d3ce09f5 SS |
3969 | if (tracing && disconnected_tracing) |
3970 | fprintf (stderr, | |
3971 | "Disconnected tracing in effect, " | |
3972 | "leaving gdbserver attached to the process\n"); | |
3973 | ||
3974 | if (any_persistent_commands ()) | |
3975 | fprintf (stderr, | |
3976 | "Persistent commands are present, " | |
3977 | "leaving gdbserver attached to the process\n"); | |
8336d594 PA |
3978 | |
3979 | /* Make sure we're in non-stop/async mode, so we we can both | |
3980 | wait for an async socket accept, and handle async target | |
3981 | events simultaneously. There's also no point either in | |
3982 | having the target stop all threads, when we're going to | |
3983 | pass signals down without informing GDB. */ | |
3984 | if (!non_stop) | |
3985 | { | |
3986 | if (debug_threads) | |
87ce2a04 | 3987 | debug_printf ("Forcing non-stop mode\n"); |
8336d594 PA |
3988 | |
3989 | non_stop = 1; | |
3990 | start_non_stop (1); | |
3991 | } | |
3992 | ||
3993 | process->gdb_detached = 1; | |
3994 | ||
3995 | /* Detaching implicitly resumes all threads. */ | |
049a8570 | 3996 | target_continue_no_signal (minus_one_ptid); |
8336d594 PA |
3997 | |
3998 | write_ok (own_buf); | |
3999 | break; /* from switch/case */ | |
4000 | } | |
4001 | ||
95954743 | 4002 | fprintf (stderr, "Detaching from process %d\n", pid); |
8336d594 | 4003 | stop_tracing (); |
95954743 | 4004 | if (detach_inferior (pid) != 0) |
bd99dc85 PA |
4005 | write_enn (own_buf); |
4006 | else | |
4007 | { | |
465a859e | 4008 | discard_queued_stop_replies (pid_to_ptid (pid)); |
bd99dc85 PA |
4009 | write_ok (own_buf); |
4010 | ||
8020350c | 4011 | if (extended_protocol || target_running ()) |
c906108c | 4012 | { |
8020350c DB |
4013 | /* There is still at least one inferior remaining or |
4014 | we are in extended mode, so don't terminate gdbserver, | |
4015 | and instead treat this like a normal program exit. */ | |
bd99dc85 PA |
4016 | last_status.kind = TARGET_WAITKIND_EXITED; |
4017 | last_status.value.integer = 0; | |
95954743 | 4018 | last_ptid = pid_to_ptid (pid); |
2d717e4f | 4019 | |
0bfdf32f | 4020 | current_thread = NULL; |
bd99dc85 PA |
4021 | } |
4022 | else | |
4023 | { | |
4024 | putpkt (own_buf); | |
4025 | remote_close (); | |
4026 | ||
4027 | /* If we are attached, then we can exit. Otherwise, we | |
4028 | need to hang around doing nothing, until the child is | |
4029 | gone. */ | |
71f55dd8 | 4030 | join_inferior (pid); |
bd99dc85 PA |
4031 | exit (0); |
4032 | } | |
4033 | } | |
4034 | break; | |
4035 | case '!': | |
4036 | extended_protocol = 1; | |
4037 | write_ok (own_buf); | |
4038 | break; | |
4039 | case '?': | |
4040 | handle_status (own_buf); | |
4041 | break; | |
4042 | case 'H': | |
4043 | if (own_buf[1] == 'c' || own_buf[1] == 'g' || own_buf[1] == 's') | |
4044 | { | |
95954743 PA |
4045 | ptid_t gdb_id, thread_id; |
4046 | int pid; | |
bd99dc85 PA |
4047 | |
4048 | require_running (own_buf); | |
95954743 PA |
4049 | |
4050 | gdb_id = read_ptid (&own_buf[2], NULL); | |
4051 | ||
4052 | pid = ptid_get_pid (gdb_id); | |
4053 | ||
4054 | if (ptid_equal (gdb_id, null_ptid) | |
4055 | || ptid_equal (gdb_id, minus_one_ptid)) | |
4056 | thread_id = null_ptid; | |
4057 | else if (pid != 0 | |
4058 | && ptid_equal (pid_to_ptid (pid), | |
4059 | gdb_id)) | |
4060 | { | |
4061 | struct thread_info *thread = | |
4062 | (struct thread_info *) find_inferior (&all_threads, | |
4063 | first_thread_of, | |
4064 | &pid); | |
4065 | if (!thread) | |
4066 | { | |
4067 | write_enn (own_buf); | |
4068 | break; | |
4069 | } | |
4070 | ||
80894984 | 4071 | thread_id = thread->entry.id; |
95954743 | 4072 | } |
bd99dc85 PA |
4073 | else |
4074 | { | |
4075 | thread_id = gdb_id_to_thread_id (gdb_id); | |
95954743 | 4076 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 4077 | { |
a06660f7 | 4078 | write_enn (own_buf); |
c906108c SS |
4079 | break; |
4080 | } | |
c906108c SS |
4081 | } |
4082 | ||
bd99dc85 | 4083 | if (own_buf[1] == 'g') |
c906108c | 4084 | { |
95954743 | 4085 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 4086 | { |
bd99dc85 PA |
4087 | /* GDB is telling us to choose any thread. Check if |
4088 | the currently selected thread is still valid. If | |
4089 | it is not, select the first available. */ | |
4090 | struct thread_info *thread = | |
4091 | (struct thread_info *) find_inferior_id (&all_threads, | |
4092 | general_thread); | |
4093 | if (thread == NULL) | |
f0db101d PA |
4094 | thread = get_first_thread (); |
4095 | thread_id = thread->entry.id; | |
c906108c | 4096 | } |
bd99dc85 PA |
4097 | |
4098 | general_thread = thread_id; | |
0bfdf32f | 4099 | set_desired_thread (1); |
f0db101d | 4100 | gdb_assert (current_thread != NULL); |
c906108c | 4101 | } |
bd99dc85 PA |
4102 | else if (own_buf[1] == 'c') |
4103 | cont_thread = thread_id; | |
c906108c | 4104 | |
bd99dc85 PA |
4105 | write_ok (own_buf); |
4106 | } | |
4107 | else | |
4108 | { | |
4109 | /* Silently ignore it so that gdb can extend the protocol | |
4110 | without compatibility headaches. */ | |
4111 | own_buf[0] = '\0'; | |
2d717e4f | 4112 | } |
bd99dc85 PA |
4113 | break; |
4114 | case 'g': | |
219f2f23 PA |
4115 | require_running (own_buf); |
4116 | if (current_traceframe >= 0) | |
4117 | { | |
3aee8918 PA |
4118 | struct regcache *regcache |
4119 | = new_register_cache (current_target_desc ()); | |
219f2f23 PA |
4120 | |
4121 | if (fetch_traceframe_registers (current_traceframe, | |
4122 | regcache, -1) == 0) | |
4123 | registers_to_string (regcache, own_buf); | |
4124 | else | |
4125 | write_enn (own_buf); | |
4126 | free_register_cache (regcache); | |
4127 | } | |
4128 | else | |
4129 | { | |
4130 | struct regcache *regcache; | |
4131 | ||
f0db101d PA |
4132 | if (!set_desired_thread (1)) |
4133 | write_enn (own_buf); | |
4134 | else | |
4135 | { | |
4136 | regcache = get_thread_regcache (current_thread, 1); | |
4137 | registers_to_string (regcache, own_buf); | |
4138 | } | |
219f2f23 | 4139 | } |
bd99dc85 PA |
4140 | break; |
4141 | case 'G': | |
219f2f23 PA |
4142 | require_running (own_buf); |
4143 | if (current_traceframe >= 0) | |
4144 | write_enn (own_buf); | |
4145 | else | |
4146 | { | |
442ea881 PA |
4147 | struct regcache *regcache; |
4148 | ||
f0db101d PA |
4149 | if (!set_desired_thread (1)) |
4150 | write_enn (own_buf); | |
4151 | else | |
4152 | { | |
4153 | regcache = get_thread_regcache (current_thread, 1); | |
4154 | registers_from_string (regcache, &own_buf[1]); | |
4155 | write_ok (own_buf); | |
4156 | } | |
442ea881 | 4157 | } |
bd99dc85 PA |
4158 | break; |
4159 | case 'm': | |
4160 | require_running (own_buf); | |
4161 | decode_m_packet (&own_buf[1], &mem_addr, &len); | |
764880b7 PA |
4162 | res = gdb_read_memory (mem_addr, mem_buf, len); |
4163 | if (res < 0) | |
bd99dc85 | 4164 | write_enn (own_buf); |
764880b7 | 4165 | else |
e9371aff | 4166 | bin2hex (mem_buf, own_buf, res); |
bd99dc85 PA |
4167 | break; |
4168 | case 'M': | |
4169 | require_running (own_buf); | |
fa593d66 | 4170 | decode_M_packet (&own_buf[1], &mem_addr, &len, &mem_buf); |
90d74c30 | 4171 | if (gdb_write_memory (mem_addr, mem_buf, len) == 0) |
bd99dc85 PA |
4172 | write_ok (own_buf); |
4173 | else | |
4174 | write_enn (own_buf); | |
4175 | break; | |
4176 | case 'X': | |
4177 | require_running (own_buf); | |
4178 | if (decode_X_packet (&own_buf[1], packet_len - 1, | |
fa593d66 | 4179 | &mem_addr, &len, &mem_buf) < 0 |
90d74c30 | 4180 | || gdb_write_memory (mem_addr, mem_buf, len) != 0) |
bd99dc85 PA |
4181 | write_enn (own_buf); |
4182 | else | |
4183 | write_ok (own_buf); | |
4184 | break; | |
4185 | case 'C': | |
4186 | require_running (own_buf); | |
a7191e8b | 4187 | hex2bin (own_buf + 1, &sig, 1); |
e053fbc4 PA |
4188 | if (gdb_signal_to_host_p ((enum gdb_signal) sig)) |
4189 | signal = gdb_signal_to_host ((enum gdb_signal) sig); | |
bd99dc85 PA |
4190 | else |
4191 | signal = 0; | |
4192 | myresume (own_buf, 0, signal); | |
4193 | break; | |
4194 | case 'S': | |
4195 | require_running (own_buf); | |
a7191e8b | 4196 | hex2bin (own_buf + 1, &sig, 1); |
e053fbc4 PA |
4197 | if (gdb_signal_to_host_p ((enum gdb_signal) sig)) |
4198 | signal = gdb_signal_to_host ((enum gdb_signal) sig); | |
bd99dc85 PA |
4199 | else |
4200 | signal = 0; | |
4201 | myresume (own_buf, 1, signal); | |
4202 | break; | |
4203 | case 'c': | |
4204 | require_running (own_buf); | |
4205 | signal = 0; | |
4206 | myresume (own_buf, 0, signal); | |
4207 | break; | |
4208 | case 's': | |
4209 | require_running (own_buf); | |
4210 | signal = 0; | |
4211 | myresume (own_buf, 1, signal); | |
4212 | break; | |
c6314022 AR |
4213 | case 'Z': /* insert_ ... */ |
4214 | /* Fallthrough. */ | |
4215 | case 'z': /* remove_ ... */ | |
bd99dc85 | 4216 | { |
bd99dc85 | 4217 | char *dataptr; |
aca22551 | 4218 | ULONGEST addr; |
27165294 | 4219 | int kind; |
bd99dc85 | 4220 | char type = own_buf[1]; |
c6314022 | 4221 | int res; |
d993e290 | 4222 | const int insert = ch == 'Z'; |
aca22551 PA |
4223 | char *p = &own_buf[3]; |
4224 | ||
4225 | p = unpack_varlen_hex (p, &addr); | |
27165294 | 4226 | kind = strtol (p + 1, &dataptr, 16); |
c6314022 | 4227 | |
802e8e6d | 4228 | if (insert) |
d993e290 | 4229 | { |
9aa76cd0 | 4230 | struct gdb_breakpoint *bp; |
802e8e6d | 4231 | |
27165294 | 4232 | bp = set_gdb_breakpoint (type, addr, kind, &res); |
802e8e6d | 4233 | if (bp != NULL) |
9f3a5c85 | 4234 | { |
802e8e6d PA |
4235 | res = 0; |
4236 | ||
4237 | /* GDB may have sent us a list of *point parameters to | |
4238 | be evaluated on the target's side. Read such list | |
4239 | here. If we already have a list of parameters, GDB | |
4240 | is telling us to drop that list and use this one | |
4241 | instead. */ | |
0a261ed8 | 4242 | clear_breakpoint_conditions_and_commands (bp); |
802e8e6d | 4243 | process_point_options (bp, &dataptr); |
9f3a5c85 | 4244 | } |
d993e290 | 4245 | } |
802e8e6d | 4246 | else |
27165294 | 4247 | res = delete_gdb_breakpoint (type, addr, kind); |
bd99dc85 | 4248 | |
c6314022 AR |
4249 | if (res == 0) |
4250 | write_ok (own_buf); | |
4251 | else if (res == 1) | |
4252 | /* Unsupported. */ | |
4253 | own_buf[0] = '\0'; | |
bd99dc85 | 4254 | else |
c6314022 | 4255 | write_enn (own_buf); |
bd99dc85 PA |
4256 | break; |
4257 | } | |
4258 | case 'k': | |
4259 | response_needed = 0; | |
4260 | if (!target_running ()) | |
95954743 PA |
4261 | /* The packet we received doesn't make sense - but we can't |
4262 | reply to it, either. */ | |
8336d594 | 4263 | return 0; |
c906108c | 4264 | |
95954743 PA |
4265 | fprintf (stderr, "Killing all inferiors\n"); |
4266 | for_each_inferior (&all_processes, kill_inferior_callback); | |
c906108c | 4267 | |
bd99dc85 PA |
4268 | /* When using the extended protocol, we wait with no program |
4269 | running. The traditional protocol will exit instead. */ | |
4270 | if (extended_protocol) | |
4271 | { | |
4272 | last_status.kind = TARGET_WAITKIND_EXITED; | |
a493e3e2 | 4273 | last_status.value.sig = GDB_SIGNAL_KILL; |
8336d594 | 4274 | return 0; |
bd99dc85 PA |
4275 | } |
4276 | else | |
8336d594 PA |
4277 | exit (0); |
4278 | ||
bd99dc85 PA |
4279 | case 'T': |
4280 | { | |
95954743 | 4281 | ptid_t gdb_id, thread_id; |
bd99dc85 PA |
4282 | |
4283 | require_running (own_buf); | |
95954743 PA |
4284 | |
4285 | gdb_id = read_ptid (&own_buf[1], NULL); | |
bd99dc85 | 4286 | thread_id = gdb_id_to_thread_id (gdb_id); |
95954743 | 4287 | if (ptid_equal (thread_id, null_ptid)) |
bd99dc85 PA |
4288 | { |
4289 | write_enn (own_buf); | |
4290 | break; | |
4291 | } | |
4292 | ||
4293 | if (mythread_alive (thread_id)) | |
4294 | write_ok (own_buf); | |
4295 | else | |
4296 | write_enn (own_buf); | |
4297 | } | |
4298 | break; | |
4299 | case 'R': | |
4300 | response_needed = 0; | |
4301 | ||
4302 | /* Restarting the inferior is only supported in the extended | |
4303 | protocol. */ | |
4304 | if (extended_protocol) | |
4305 | { | |
4306 | if (target_running ()) | |
95954743 PA |
4307 | for_each_inferior (&all_processes, |
4308 | kill_inferior_callback); | |
bd99dc85 PA |
4309 | fprintf (stderr, "GDBserver restarting\n"); |
4310 | ||
4311 | /* Wait till we are at 1st instruction in prog. */ | |
4312 | if (program_argv != NULL) | |
51aee833 YQ |
4313 | { |
4314 | start_inferior (program_argv); | |
4315 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
4316 | { | |
4317 | /* Stopped at the first instruction of the target | |
4318 | process. */ | |
4319 | general_thread = last_ptid; | |
4320 | } | |
4321 | else | |
4322 | { | |
4323 | /* Something went wrong. */ | |
4324 | general_thread = null_ptid; | |
4325 | } | |
4326 | } | |
bd99dc85 PA |
4327 | else |
4328 | { | |
4329 | last_status.kind = TARGET_WAITKIND_EXITED; | |
a493e3e2 | 4330 | last_status.value.sig = GDB_SIGNAL_KILL; |
bd99dc85 | 4331 | } |
8336d594 | 4332 | return 0; |
c906108c SS |
4333 | } |
4334 | else | |
4335 | { | |
bd99dc85 PA |
4336 | /* It is a request we don't understand. Respond with an |
4337 | empty packet so that gdb knows that we don't support this | |
4338 | request. */ | |
4339 | own_buf[0] = '\0'; | |
4340 | break; | |
4341 | } | |
4342 | case 'v': | |
4343 | /* Extended (long) request. */ | |
4344 | handle_v_requests (own_buf, packet_len, &new_packet_len); | |
4345 | break; | |
4346 | ||
4347 | default: | |
4348 | /* It is a request we don't understand. Respond with an empty | |
4349 | packet so that gdb knows that we don't support this | |
4350 | request. */ | |
4351 | own_buf[0] = '\0'; | |
4352 | break; | |
4353 | } | |
4354 | ||
4355 | if (new_packet_len != -1) | |
4356 | putpkt_binary (own_buf, new_packet_len); | |
4357 | else | |
4358 | putpkt (own_buf); | |
4359 | ||
4360 | response_needed = 0; | |
4361 | ||
8336d594 PA |
4362 | if (exit_requested) |
4363 | return -1; | |
4364 | ||
4365 | return 0; | |
c906108c | 4366 | } |
bd99dc85 PA |
4367 | |
4368 | /* Event-loop callback for serial events. */ | |
4369 | ||
8336d594 | 4370 | int |
bd99dc85 PA |
4371 | handle_serial_event (int err, gdb_client_data client_data) |
4372 | { | |
4373 | if (debug_threads) | |
87ce2a04 | 4374 | debug_printf ("handling possible serial event\n"); |
bd99dc85 PA |
4375 | |
4376 | /* Really handle it. */ | |
8336d594 PA |
4377 | if (process_serial_event () < 0) |
4378 | return -1; | |
bd99dc85 | 4379 | |
0bfdf32f | 4380 | /* Be sure to not change the selected thread behind GDB's back. |
bd99dc85 | 4381 | Important in the non-stop mode asynchronous protocol. */ |
0bfdf32f | 4382 | set_desired_thread (1); |
8336d594 PA |
4383 | |
4384 | return 0; | |
bd99dc85 PA |
4385 | } |
4386 | ||
f2faf941 PA |
4387 | /* Push a stop notification on the notification queue. */ |
4388 | ||
4389 | static void | |
4390 | push_stop_notification (ptid_t ptid, struct target_waitstatus *status) | |
4391 | { | |
4392 | struct vstop_notif *vstop_notif = XNEW (struct vstop_notif); | |
4393 | ||
4394 | vstop_notif->status = *status; | |
4395 | vstop_notif->ptid = ptid; | |
4396 | /* Push Stop notification. */ | |
4397 | notif_push (¬if_stop, (struct notif_event *) vstop_notif); | |
4398 | } | |
4399 | ||
bd99dc85 PA |
4400 | /* Event-loop callback for target events. */ |
4401 | ||
8336d594 | 4402 | int |
bd99dc85 PA |
4403 | handle_target_event (int err, gdb_client_data client_data) |
4404 | { | |
4405 | if (debug_threads) | |
87ce2a04 | 4406 | debug_printf ("handling possible target event\n"); |
bd99dc85 | 4407 | |
95954743 PA |
4408 | last_ptid = mywait (minus_one_ptid, &last_status, |
4409 | TARGET_WNOHANG, 1); | |
bd99dc85 | 4410 | |
fa96cb38 PA |
4411 | if (last_status.kind == TARGET_WAITKIND_NO_RESUMED) |
4412 | { | |
f2faf941 PA |
4413 | if (gdb_connected () && report_no_resumed) |
4414 | push_stop_notification (null_ptid, &last_status); | |
fa96cb38 PA |
4415 | } |
4416 | else if (last_status.kind != TARGET_WAITKIND_IGNORE) | |
bd99dc85 | 4417 | { |
8336d594 PA |
4418 | int pid = ptid_get_pid (last_ptid); |
4419 | struct process_info *process = find_process_pid (pid); | |
4420 | int forward_event = !gdb_connected () || process->gdb_detached; | |
4421 | ||
4422 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
4423 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
f9e39928 PA |
4424 | { |
4425 | mark_breakpoints_out (process); | |
bc1e6c81 | 4426 | target_mourn_inferior (last_ptid); |
f9e39928 | 4427 | } |
65706a29 PA |
4428 | else if (last_status.kind == TARGET_WAITKIND_THREAD_EXITED) |
4429 | ; | |
ce1a5b52 | 4430 | else |
d20a8ad9 PA |
4431 | { |
4432 | /* We're reporting this thread as stopped. Update its | |
4433 | "want-stopped" state to what the client wants, until it | |
4434 | gets a new resume action. */ | |
0bfdf32f GB |
4435 | current_thread->last_resume_kind = resume_stop; |
4436 | current_thread->last_status = last_status; | |
d20a8ad9 | 4437 | } |
8336d594 PA |
4438 | |
4439 | if (forward_event) | |
4440 | { | |
4441 | if (!target_running ()) | |
4442 | { | |
4443 | /* The last process exited. We're done. */ | |
4444 | exit (0); | |
4445 | } | |
4446 | ||
65706a29 PA |
4447 | if (last_status.kind == TARGET_WAITKIND_EXITED |
4448 | || last_status.kind == TARGET_WAITKIND_SIGNALLED | |
4449 | || last_status.kind == TARGET_WAITKIND_THREAD_EXITED) | |
4450 | ; | |
4451 | else | |
8336d594 PA |
4452 | { |
4453 | /* A thread stopped with a signal, but gdb isn't | |
4454 | connected to handle it. Pass it down to the | |
4455 | inferior, as if it wasn't being traced. */ | |
049a8570 | 4456 | enum gdb_signal signal; |
8336d594 PA |
4457 | |
4458 | if (debug_threads) | |
87ce2a04 DE |
4459 | debug_printf ("GDB not connected; forwarding event %d for" |
4460 | " [%s]\n", | |
4461 | (int) last_status.kind, | |
4462 | target_pid_to_str (last_ptid)); | |
8336d594 | 4463 | |
65706a29 | 4464 | if (last_status.kind == TARGET_WAITKIND_STOPPED) |
049a8570 | 4465 | signal = last_status.value.sig; |
65706a29 | 4466 | else |
049a8570 SDJ |
4467 | signal = GDB_SIGNAL_0; |
4468 | target_continue (last_ptid, signal); | |
8336d594 | 4469 | } |
8336d594 PA |
4470 | } |
4471 | else | |
f2faf941 | 4472 | push_stop_notification (last_ptid, &last_status); |
bd99dc85 PA |
4473 | } |
4474 | ||
0bfdf32f | 4475 | /* Be sure to not change the selected thread behind GDB's back. |
bd99dc85 | 4476 | Important in the non-stop mode asynchronous protocol. */ |
0bfdf32f | 4477 | set_desired_thread (1); |
8336d594 PA |
4478 | |
4479 | return 0; | |
bd99dc85 | 4480 | } |