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" |
c906108c | 25 | |
87ce2a04 | 26 | #include <ctype.h> |
a9fa9f7d | 27 | #include <unistd.h> |
68070c10 | 28 | #if HAVE_SIGNAL_H |
a9fa9f7d | 29 | #include <signal.h> |
68070c10 | 30 | #endif |
87ce2a04 | 31 | #include "gdb_vecs.h" |
8bdce1ff | 32 | #include "gdb_wait.h" |
9accd112 | 33 | #include "btrace-common.h" |
602e3198 | 34 | #include "filestuff.h" |
c144c7a0 | 35 | #include "tracepoint.h" |
799cdc37 | 36 | #include "dll.h" |
533b0600 | 37 | #include "hostio.h" |
a9fa9f7d | 38 | |
122f36ef PA |
39 | /* The thread set with an `Hc' packet. `Hc' is deprecated in favor of |
40 | `vCont'. Note the multi-process extensions made `vCont' a | |
41 | requirement, so `Hc pPID.TID' is pretty much undefined. So | |
42 | CONT_THREAD can be null_ptid for no `Hc' thread, minus_one_ptid for | |
43 | resuming all threads of the process (again, `Hc' isn't used for | |
40e91bc7 | 44 | multi-process), or a specific thread ptid_t. */ |
95954743 | 45 | ptid_t cont_thread; |
122f36ef PA |
46 | |
47 | /* The thread set with an `Hg' packet. */ | |
95954743 | 48 | ptid_t general_thread; |
5b1c542e | 49 | |
0d62e5e8 DJ |
50 | int server_waiting; |
51 | ||
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 | |
bd99dc85 PA |
122 | static char *own_buf; |
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 | ||
14a00470 YQ |
196 | struct notif_server notif_stop = |
197 | { | |
198 | "vStopped", "Stop", NULL, vstop_notif_reply, | |
199 | }; | |
200 | ||
2d717e4f DJ |
201 | static int |
202 | target_running (void) | |
203 | { | |
649ebbca | 204 | return get_first_thread () != NULL; |
2d717e4f DJ |
205 | } |
206 | ||
fc620387 | 207 | static int |
5b1c542e | 208 | start_inferior (char **argv) |
c906108c | 209 | { |
ccd213ac | 210 | char **new_argv = argv; |
2d717e4f | 211 | |
ccd213ac DJ |
212 | if (wrapper_argv != NULL) |
213 | { | |
214 | int i, count = 1; | |
215 | ||
216 | for (i = 0; wrapper_argv[i] != NULL; i++) | |
217 | count++; | |
218 | for (i = 0; argv[i] != NULL; i++) | |
219 | count++; | |
8d749320 | 220 | new_argv = XALLOCAVEC (char *, count); |
ccd213ac DJ |
221 | count = 0; |
222 | for (i = 0; wrapper_argv[i] != NULL; i++) | |
223 | new_argv[count++] = wrapper_argv[i]; | |
224 | for (i = 0; argv[i] != NULL; i++) | |
225 | new_argv[count++] = argv[i]; | |
226 | new_argv[count] = NULL; | |
227 | } | |
228 | ||
65730243 DE |
229 | if (debug_threads) |
230 | { | |
231 | int i; | |
232 | for (i = 0; new_argv[i]; ++i) | |
87ce2a04 DE |
233 | debug_printf ("new_argv[%d] = \"%s\"\n", i, new_argv[i]); |
234 | debug_flush (); | |
65730243 DE |
235 | } |
236 | ||
b80864fb | 237 | #ifdef SIGTTOU |
a9fa9f7d DJ |
238 | signal (SIGTTOU, SIG_DFL); |
239 | signal (SIGTTIN, SIG_DFL); | |
b80864fb | 240 | #endif |
a9fa9f7d | 241 | |
ccd213ac | 242 | signal_pid = create_inferior (new_argv[0], new_argv); |
0d62e5e8 | 243 | |
c588c53c MS |
244 | /* FIXME: we don't actually know at this point that the create |
245 | actually succeeded. We won't know that until we wait. */ | |
a1928bad | 246 | fprintf (stderr, "Process %s created; pid = %ld\n", argv[0], |
a9fa9f7d | 247 | signal_pid); |
b80864fb | 248 | fflush (stderr); |
a9fa9f7d | 249 | |
b80864fb | 250 | #ifdef SIGTTOU |
a9fa9f7d DJ |
251 | signal (SIGTTOU, SIG_IGN); |
252 | signal (SIGTTIN, SIG_IGN); | |
290fadea RS |
253 | terminal_fd = fileno (stderr); |
254 | old_foreground_pgrp = tcgetpgrp (terminal_fd); | |
255 | tcsetpgrp (terminal_fd, signal_pid); | |
256 | atexit (restore_old_foreground_pgrp); | |
b80864fb | 257 | #endif |
c906108c | 258 | |
ccd213ac DJ |
259 | if (wrapper_argv != NULL) |
260 | { | |
261 | struct thread_resume resume_info; | |
ccd213ac | 262 | |
ee47b2f8 | 263 | memset (&resume_info, 0, sizeof (resume_info)); |
95954743 | 264 | resume_info.thread = pid_to_ptid (signal_pid); |
bd99dc85 | 265 | resume_info.kind = resume_continue; |
ccd213ac | 266 | resume_info.sig = 0; |
ccd213ac | 267 | |
06db92f0 | 268 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
bd99dc85 | 269 | |
eb97750b | 270 | if (last_status.kind == TARGET_WAITKIND_STOPPED) |
ccd213ac | 271 | { |
eb97750b YQ |
272 | do |
273 | { | |
274 | (*the_target->resume) (&resume_info, 1); | |
275 | ||
276 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); | |
277 | if (last_status.kind != TARGET_WAITKIND_STOPPED) | |
278 | break; | |
279 | ||
280 | current_thread->last_resume_kind = resume_stop; | |
281 | current_thread->last_status = last_status; | |
282 | } | |
283 | while (last_status.value.sig != GDB_SIGNAL_TRAP); | |
ccd213ac | 284 | } |
ece66d65 | 285 | target_post_create_inferior (); |
5b1c542e | 286 | return signal_pid; |
ccd213ac DJ |
287 | } |
288 | ||
5b1c542e PA |
289 | /* Wait till we are at 1st instruction in program, return new pid |
290 | (assuming success). */ | |
95954743 | 291 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
5b1c542e | 292 | |
ece66d65 | 293 | target_post_create_inferior (); |
c06cbd92 | 294 | |
d20a8ad9 PA |
295 | if (last_status.kind != TARGET_WAITKIND_EXITED |
296 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
297 | { | |
0bfdf32f GB |
298 | current_thread->last_resume_kind = resume_stop; |
299 | current_thread->last_status = last_status; | |
d20a8ad9 | 300 | } |
80ad801e PA |
301 | else |
302 | mourn_inferior (find_process_pid (ptid_get_pid (last_ptid))); | |
d20a8ad9 | 303 | |
5b1c542e | 304 | return signal_pid; |
c906108c SS |
305 | } |
306 | ||
45b7b345 | 307 | static int |
5b1c542e | 308 | attach_inferior (int pid) |
45b7b345 DJ |
309 | { |
310 | /* myattach should return -1 if attaching is unsupported, | |
311 | 0 if it succeeded, and call error() otherwise. */ | |
a9fa9f7d | 312 | |
45b7b345 DJ |
313 | if (myattach (pid) != 0) |
314 | return -1; | |
315 | ||
6910d122 | 316 | fprintf (stderr, "Attached; pid = %d\n", pid); |
b80864fb | 317 | fflush (stderr); |
6910d122 | 318 | |
a9fa9f7d DJ |
319 | /* FIXME - It may be that we should get the SIGNAL_PID from the |
320 | attach function, so that it can be the main thread instead of | |
321 | whichever we were told to attach to. */ | |
322 | signal_pid = pid; | |
323 | ||
bd99dc85 PA |
324 | if (!non_stop) |
325 | { | |
95954743 | 326 | last_ptid = mywait (pid_to_ptid (pid), &last_status, 0, 0); |
bd99dc85 PA |
327 | |
328 | /* GDB knows to ignore the first SIGSTOP after attaching to a running | |
329 | process using the "attach" command, but this is different; it's | |
330 | just using "target remote". Pretend it's just starting up. */ | |
331 | if (last_status.kind == TARGET_WAITKIND_STOPPED | |
a493e3e2 PA |
332 | && last_status.value.sig == GDB_SIGNAL_STOP) |
333 | last_status.value.sig = GDB_SIGNAL_TRAP; | |
d20a8ad9 | 334 | |
0bfdf32f GB |
335 | current_thread->last_resume_kind = resume_stop; |
336 | current_thread->last_status = last_status; | |
bd99dc85 | 337 | } |
9db87ebd | 338 | |
45b7b345 DJ |
339 | return 0; |
340 | } | |
341 | ||
c906108c | 342 | extern int remote_debug; |
ce3a066d | 343 | |
0876f84a DJ |
344 | /* Decode a qXfer read request. Return 0 if everything looks OK, |
345 | or -1 otherwise. */ | |
346 | ||
347 | static int | |
d08aafef | 348 | decode_xfer_read (char *buf, CORE_ADDR *ofs, unsigned int *len) |
0876f84a | 349 | { |
d08aafef PA |
350 | /* After the read marker and annex, qXfer looks like a |
351 | traditional 'm' packet. */ | |
352 | decode_m_packet (buf, ofs, len); | |
353 | ||
354 | return 0; | |
355 | } | |
356 | ||
357 | static int | |
358 | decode_xfer (char *buf, char **object, char **rw, char **annex, char **offset) | |
359 | { | |
360 | /* Extract and NUL-terminate the object. */ | |
361 | *object = buf; | |
362 | while (*buf && *buf != ':') | |
363 | buf++; | |
364 | if (*buf == '\0') | |
365 | return -1; | |
366 | *buf++ = 0; | |
367 | ||
368 | /* Extract and NUL-terminate the read/write action. */ | |
369 | *rw = buf; | |
370 | while (*buf && *buf != ':') | |
371 | buf++; | |
372 | if (*buf == '\0') | |
373 | return -1; | |
374 | *buf++ = 0; | |
375 | ||
0876f84a DJ |
376 | /* Extract and NUL-terminate the annex. */ |
377 | *annex = buf; | |
378 | while (*buf && *buf != ':') | |
379 | buf++; | |
380 | if (*buf == '\0') | |
381 | return -1; | |
382 | *buf++ = 0; | |
383 | ||
d08aafef | 384 | *offset = buf; |
0876f84a DJ |
385 | return 0; |
386 | } | |
387 | ||
388 | /* Write the response to a successful qXfer read. Returns the | |
389 | length of the (binary) data stored in BUF, corresponding | |
390 | to as much of DATA/LEN as we could fit. IS_MORE controls | |
391 | the first character of the response. */ | |
392 | static int | |
f98cd059 | 393 | write_qxfer_response (char *buf, const gdb_byte *data, int len, int is_more) |
0876f84a DJ |
394 | { |
395 | int out_len; | |
396 | ||
397 | if (is_more) | |
398 | buf[0] = 'm'; | |
399 | else | |
400 | buf[0] = 'l'; | |
401 | ||
124e13d9 SM |
402 | return remote_escape_output (data, len, 1, (unsigned char *) buf + 1, |
403 | &out_len, PBUFSIZ - 2) + 1; | |
0876f84a DJ |
404 | } |
405 | ||
f4abbc16 | 406 | /* Handle btrace enabling in BTS format. */ |
9accd112 MM |
407 | |
408 | static const char * | |
f4abbc16 | 409 | handle_btrace_enable_bts (struct thread_info *thread) |
9accd112 MM |
410 | { |
411 | if (thread->btrace != NULL) | |
412 | return "E.Btrace already enabled."; | |
413 | ||
f4abbc16 MM |
414 | current_btrace_conf.format = BTRACE_FORMAT_BTS; |
415 | thread->btrace = target_enable_btrace (thread->entry.id, | |
416 | ¤t_btrace_conf); | |
9accd112 MM |
417 | if (thread->btrace == NULL) |
418 | return "E.Could not enable btrace."; | |
419 | ||
420 | return NULL; | |
421 | } | |
422 | ||
bc504a31 | 423 | /* Handle btrace enabling in Intel Processor Trace format. */ |
b20a6524 MM |
424 | |
425 | static const char * | |
426 | handle_btrace_enable_pt (struct thread_info *thread) | |
427 | { | |
428 | if (thread->btrace != NULL) | |
429 | return "E.Btrace already enabled."; | |
430 | ||
431 | current_btrace_conf.format = BTRACE_FORMAT_PT; | |
432 | thread->btrace = target_enable_btrace (thread->entry.id, | |
433 | ¤t_btrace_conf); | |
434 | if (thread->btrace == NULL) | |
435 | return "E.Could not enable btrace."; | |
436 | ||
437 | return NULL; | |
438 | } | |
439 | ||
9accd112 MM |
440 | /* Handle btrace disabling. */ |
441 | ||
442 | static const char * | |
443 | handle_btrace_disable (struct thread_info *thread) | |
444 | { | |
445 | ||
446 | if (thread->btrace == NULL) | |
447 | return "E.Branch tracing not enabled."; | |
448 | ||
449 | if (target_disable_btrace (thread->btrace) != 0) | |
450 | return "E.Could not disable branch tracing."; | |
451 | ||
452 | thread->btrace = NULL; | |
453 | return NULL; | |
454 | } | |
455 | ||
456 | /* Handle the "Qbtrace" packet. */ | |
457 | ||
458 | static int | |
459 | handle_btrace_general_set (char *own_buf) | |
460 | { | |
461 | struct thread_info *thread; | |
462 | const char *err; | |
463 | char *op; | |
464 | ||
61012eef | 465 | if (!startswith (own_buf, "Qbtrace:")) |
9accd112 MM |
466 | return 0; |
467 | ||
468 | op = own_buf + strlen ("Qbtrace:"); | |
469 | ||
9accd112 MM |
470 | if (ptid_equal (general_thread, null_ptid) |
471 | || ptid_equal (general_thread, minus_one_ptid)) | |
472 | { | |
473 | strcpy (own_buf, "E.Must select a single thread."); | |
474 | return -1; | |
475 | } | |
476 | ||
477 | thread = find_thread_ptid (general_thread); | |
478 | if (thread == NULL) | |
479 | { | |
480 | strcpy (own_buf, "E.No such thread."); | |
481 | return -1; | |
482 | } | |
483 | ||
484 | err = NULL; | |
485 | ||
486 | if (strcmp (op, "bts") == 0) | |
f4abbc16 | 487 | err = handle_btrace_enable_bts (thread); |
b20a6524 MM |
488 | else if (strcmp (op, "pt") == 0) |
489 | err = handle_btrace_enable_pt (thread); | |
9accd112 MM |
490 | else if (strcmp (op, "off") == 0) |
491 | err = handle_btrace_disable (thread); | |
492 | else | |
b20a6524 | 493 | err = "E.Bad Qbtrace operation. Use bts, pt, or off."; |
9accd112 MM |
494 | |
495 | if (err != 0) | |
496 | strcpy (own_buf, err); | |
497 | else | |
498 | write_ok (own_buf); | |
499 | ||
500 | return 1; | |
501 | } | |
502 | ||
d33501a5 MM |
503 | /* Handle the "Qbtrace-conf" packet. */ |
504 | ||
505 | static int | |
506 | handle_btrace_conf_general_set (char *own_buf) | |
507 | { | |
508 | struct thread_info *thread; | |
509 | char *op; | |
510 | ||
61012eef | 511 | if (!startswith (own_buf, "Qbtrace-conf:")) |
d33501a5 MM |
512 | return 0; |
513 | ||
514 | op = own_buf + strlen ("Qbtrace-conf:"); | |
515 | ||
516 | if (ptid_equal (general_thread, null_ptid) | |
517 | || ptid_equal (general_thread, minus_one_ptid)) | |
518 | { | |
519 | strcpy (own_buf, "E.Must select a single thread."); | |
520 | return -1; | |
521 | } | |
522 | ||
523 | thread = find_thread_ptid (general_thread); | |
524 | if (thread == NULL) | |
525 | { | |
526 | strcpy (own_buf, "E.No such thread."); | |
527 | return -1; | |
528 | } | |
529 | ||
61012eef | 530 | if (startswith (op, "bts:size=")) |
d33501a5 MM |
531 | { |
532 | unsigned long size; | |
533 | char *endp = NULL; | |
534 | ||
535 | errno = 0; | |
536 | size = strtoul (op + strlen ("bts:size="), &endp, 16); | |
537 | if (endp == NULL || *endp != 0 || errno != 0 || size > UINT_MAX) | |
538 | { | |
539 | strcpy (own_buf, "E.Bad size value."); | |
540 | return -1; | |
541 | } | |
542 | ||
543 | current_btrace_conf.bts.size = (unsigned int) size; | |
544 | } | |
b20a6524 MM |
545 | else if (strncmp (op, "pt:size=", strlen ("pt:size=")) == 0) |
546 | { | |
547 | unsigned long size; | |
548 | char *endp = NULL; | |
549 | ||
550 | errno = 0; | |
551 | size = strtoul (op + strlen ("pt:size="), &endp, 16); | |
552 | if (endp == NULL || *endp != 0 || errno != 0 || size > UINT_MAX) | |
553 | { | |
554 | strcpy (own_buf, "E.Bad size value."); | |
555 | return -1; | |
556 | } | |
557 | ||
558 | current_btrace_conf.pt.size = (unsigned int) size; | |
559 | } | |
d33501a5 MM |
560 | else |
561 | { | |
562 | strcpy (own_buf, "E.Bad Qbtrace configuration option."); | |
563 | return -1; | |
564 | } | |
565 | ||
566 | write_ok (own_buf); | |
567 | return 1; | |
568 | } | |
569 | ||
89be2091 | 570 | /* Handle all of the extended 'Q' packets. */ |
ae1ada35 DE |
571 | |
572 | static void | |
89be2091 DJ |
573 | handle_general_set (char *own_buf) |
574 | { | |
61012eef | 575 | if (startswith (own_buf, "QPassSignals:")) |
89be2091 | 576 | { |
a493e3e2 | 577 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
89be2091 DJ |
578 | const char *p = own_buf + strlen ("QPassSignals:"); |
579 | CORE_ADDR cursig; | |
580 | ||
581 | p = decode_address_to_semicolon (&cursig, p); | |
582 | for (i = 0; i < numsigs; i++) | |
583 | { | |
584 | if (i == cursig) | |
585 | { | |
586 | pass_signals[i] = 1; | |
587 | if (*p == '\0') | |
588 | /* Keep looping, to clear the remaining signals. */ | |
589 | cursig = -1; | |
590 | else | |
591 | p = decode_address_to_semicolon (&cursig, p); | |
592 | } | |
593 | else | |
594 | pass_signals[i] = 0; | |
595 | } | |
596 | strcpy (own_buf, "OK"); | |
597 | return; | |
598 | } | |
599 | ||
61012eef | 600 | if (startswith (own_buf, "QProgramSignals:")) |
9b224c5e | 601 | { |
a493e3e2 | 602 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
9b224c5e PA |
603 | const char *p = own_buf + strlen ("QProgramSignals:"); |
604 | CORE_ADDR cursig; | |
605 | ||
606 | program_signals_p = 1; | |
607 | ||
608 | p = decode_address_to_semicolon (&cursig, p); | |
609 | for (i = 0; i < numsigs; i++) | |
610 | { | |
611 | if (i == cursig) | |
612 | { | |
613 | program_signals[i] = 1; | |
614 | if (*p == '\0') | |
615 | /* Keep looping, to clear the remaining signals. */ | |
616 | cursig = -1; | |
617 | else | |
618 | p = decode_address_to_semicolon (&cursig, p); | |
619 | } | |
620 | else | |
621 | program_signals[i] = 0; | |
622 | } | |
623 | strcpy (own_buf, "OK"); | |
624 | return; | |
625 | } | |
626 | ||
82075af2 JS |
627 | if (startswith (own_buf, "QCatchSyscalls:")) |
628 | { | |
629 | const char *p = own_buf + sizeof ("QCatchSyscalls:") - 1; | |
630 | int enabled = -1; | |
631 | CORE_ADDR sysno; | |
632 | struct process_info *process; | |
633 | ||
634 | if (!target_running () || !target_supports_catch_syscall ()) | |
635 | { | |
636 | write_enn (own_buf); | |
637 | return; | |
638 | } | |
639 | ||
640 | if (strcmp (p, "0") == 0) | |
641 | enabled = 0; | |
642 | else if (p[0] == '1' && (p[1] == ';' || p[1] == '\0')) | |
643 | enabled = 1; | |
644 | else | |
645 | { | |
646 | fprintf (stderr, "Unknown catch-syscalls mode requested: %s\n", | |
647 | own_buf); | |
648 | write_enn (own_buf); | |
649 | return; | |
650 | } | |
651 | ||
652 | process = current_process (); | |
653 | VEC_truncate (int, process->syscalls_to_catch, 0); | |
654 | ||
655 | if (enabled) | |
656 | { | |
657 | p += 1; | |
658 | if (*p == ';') | |
659 | { | |
660 | p += 1; | |
661 | while (*p != '\0') | |
662 | { | |
663 | p = decode_address_to_semicolon (&sysno, p); | |
664 | VEC_safe_push (int, process->syscalls_to_catch, (int) sysno); | |
665 | } | |
666 | } | |
667 | else | |
668 | VEC_safe_push (int, process->syscalls_to_catch, ANY_SYSCALL); | |
669 | } | |
670 | ||
671 | write_ok (own_buf); | |
672 | return; | |
673 | } | |
674 | ||
a6f3e723 SL |
675 | if (strcmp (own_buf, "QStartNoAckMode") == 0) |
676 | { | |
677 | if (remote_debug) | |
678 | { | |
679 | fprintf (stderr, "[noack mode enabled]\n"); | |
680 | fflush (stderr); | |
681 | } | |
682 | ||
683 | noack_mode = 1; | |
684 | write_ok (own_buf); | |
685 | return; | |
686 | } | |
687 | ||
61012eef | 688 | if (startswith (own_buf, "QNonStop:")) |
bd99dc85 PA |
689 | { |
690 | char *mode = own_buf + 9; | |
691 | int req = -1; | |
b2333d22 | 692 | const char *req_str; |
bd99dc85 PA |
693 | |
694 | if (strcmp (mode, "0") == 0) | |
695 | req = 0; | |
696 | else if (strcmp (mode, "1") == 0) | |
697 | req = 1; | |
698 | else | |
699 | { | |
700 | /* We don't know what this mode is, so complain to | |
701 | GDB. */ | |
702 | fprintf (stderr, "Unknown non-stop mode requested: %s\n", | |
703 | own_buf); | |
704 | write_enn (own_buf); | |
705 | return; | |
706 | } | |
707 | ||
708 | req_str = req ? "non-stop" : "all-stop"; | |
709 | if (start_non_stop (req) != 0) | |
710 | { | |
711 | fprintf (stderr, "Setting %s mode failed\n", req_str); | |
712 | write_enn (own_buf); | |
713 | return; | |
714 | } | |
715 | ||
716 | non_stop = req; | |
717 | ||
718 | if (remote_debug) | |
719 | fprintf (stderr, "[%s mode enabled]\n", req_str); | |
720 | ||
721 | write_ok (own_buf); | |
722 | return; | |
723 | } | |
724 | ||
61012eef | 725 | if (startswith (own_buf, "QDisableRandomization:")) |
03583c20 UW |
726 | { |
727 | char *packet = own_buf + strlen ("QDisableRandomization:"); | |
728 | ULONGEST setting; | |
729 | ||
730 | unpack_varlen_hex (packet, &setting); | |
731 | disable_randomization = setting; | |
732 | ||
733 | if (remote_debug) | |
734 | { | |
735 | if (disable_randomization) | |
736 | fprintf (stderr, "[address space randomization disabled]\n"); | |
737 | else | |
738 | fprintf (stderr, "[address space randomization enabled]\n"); | |
739 | } | |
740 | ||
741 | write_ok (own_buf); | |
742 | return; | |
743 | } | |
744 | ||
219f2f23 PA |
745 | if (target_supports_tracepoints () |
746 | && handle_tracepoint_general_set (own_buf)) | |
747 | return; | |
748 | ||
61012eef | 749 | if (startswith (own_buf, "QAgent:")) |
d1feda86 YQ |
750 | { |
751 | char *mode = own_buf + strlen ("QAgent:"); | |
752 | int req = 0; | |
753 | ||
754 | if (strcmp (mode, "0") == 0) | |
755 | req = 0; | |
756 | else if (strcmp (mode, "1") == 0) | |
757 | req = 1; | |
758 | else | |
759 | { | |
760 | /* We don't know what this value is, so complain to GDB. */ | |
761 | sprintf (own_buf, "E.Unknown QAgent value"); | |
762 | return; | |
763 | } | |
764 | ||
765 | /* Update the flag. */ | |
766 | use_agent = req; | |
767 | if (remote_debug) | |
768 | fprintf (stderr, "[%s agent]\n", req ? "Enable" : "Disable"); | |
769 | write_ok (own_buf); | |
770 | return; | |
771 | } | |
772 | ||
9accd112 MM |
773 | if (handle_btrace_general_set (own_buf)) |
774 | return; | |
775 | ||
d33501a5 MM |
776 | if (handle_btrace_conf_general_set (own_buf)) |
777 | return; | |
778 | ||
65706a29 PA |
779 | if (startswith (own_buf, "QThreadEvents:")) |
780 | { | |
781 | char *mode = own_buf + strlen ("QThreadEvents:"); | |
782 | enum tribool req = TRIBOOL_UNKNOWN; | |
783 | ||
784 | if (strcmp (mode, "0") == 0) | |
785 | req = TRIBOOL_FALSE; | |
786 | else if (strcmp (mode, "1") == 0) | |
787 | req = TRIBOOL_TRUE; | |
788 | else | |
789 | { | |
790 | char *mode_copy = xstrdup (mode); | |
791 | ||
792 | /* We don't know what this mode is, so complain to GDB. */ | |
793 | sprintf (own_buf, "E.Unknown thread-events mode requested: %s\n", | |
794 | mode_copy); | |
795 | xfree (mode_copy); | |
796 | return; | |
797 | } | |
798 | ||
799 | report_thread_events = (req == TRIBOOL_TRUE); | |
800 | ||
801 | if (remote_debug) | |
802 | { | |
803 | const char *req_str = report_thread_events ? "enabled" : "disabled"; | |
804 | ||
805 | fprintf (stderr, "[thread events are now %s]\n", req_str); | |
806 | } | |
807 | ||
808 | write_ok (own_buf); | |
809 | return; | |
810 | } | |
811 | ||
89be2091 DJ |
812 | /* Otherwise we didn't know what packet it was. Say we didn't |
813 | understand it. */ | |
814 | own_buf[0] = 0; | |
815 | } | |
816 | ||
23181151 | 817 | static const char * |
fb1e4ffc | 818 | get_features_xml (const char *annex) |
23181151 | 819 | { |
3aee8918 PA |
820 | const struct target_desc *desc = current_target_desc (); |
821 | ||
822 | /* `desc->xmltarget' defines what to return when looking for the | |
823 | "target.xml" file. Its contents can either be verbatim XML code | |
824 | (prefixed with a '@') or else the name of the actual XML file to | |
825 | be used in place of "target.xml". | |
fb1e4ffc | 826 | |
9b4b61c8 UW |
827 | This variable is set up from the auto-generated |
828 | init_registers_... routine for the current target. */ | |
fb1e4ffc | 829 | |
3aee8918 | 830 | if (desc->xmltarget != NULL && strcmp (annex, "target.xml") == 0) |
23181151 | 831 | { |
3aee8918 PA |
832 | if (*desc->xmltarget == '@') |
833 | return desc->xmltarget + 1; | |
23181151 | 834 | else |
3aee8918 | 835 | annex = desc->xmltarget; |
23181151 DJ |
836 | } |
837 | ||
9b4b61c8 UW |
838 | #ifdef USE_XML |
839 | { | |
840 | extern const char *const xml_builtin[][2]; | |
841 | int i; | |
842 | ||
843 | /* Look for the annex. */ | |
844 | for (i = 0; xml_builtin[i][0] != NULL; i++) | |
845 | if (strcmp (annex, xml_builtin[i][0]) == 0) | |
846 | break; | |
847 | ||
848 | if (xml_builtin[i][0] != NULL) | |
849 | return xml_builtin[i][1]; | |
850 | } | |
851 | #endif | |
852 | ||
853 | return NULL; | |
23181151 DJ |
854 | } |
855 | ||
5b3da067 | 856 | static void |
c74d0ad8 DJ |
857 | monitor_show_help (void) |
858 | { | |
859 | monitor_output ("The following monitor commands are supported:\n"); | |
860 | monitor_output (" set debug <0|1>\n"); | |
1b3f6016 | 861 | monitor_output (" Enable general debugging messages\n"); |
aa5ca48f DE |
862 | monitor_output (" set debug-hw-points <0|1>\n"); |
863 | monitor_output (" Enable h/w breakpoint/watchpoint debugging messages\n"); | |
c74d0ad8 DJ |
864 | monitor_output (" set remote-debug <0|1>\n"); |
865 | monitor_output (" Enable remote protocol debugging messages\n"); | |
87ce2a04 DE |
866 | monitor_output (" set debug-format option1[,option2,...]\n"); |
867 | monitor_output (" Add additional information to debugging messages\n"); | |
868 | monitor_output (" Options: all, none"); | |
87ce2a04 | 869 | monitor_output (", timestamp"); |
87ce2a04 | 870 | monitor_output ("\n"); |
ecd7ecbc DJ |
871 | monitor_output (" exit\n"); |
872 | monitor_output (" Quit GDBserver\n"); | |
c74d0ad8 DJ |
873 | } |
874 | ||
764880b7 PA |
875 | /* Read trace frame or inferior memory. Returns the number of bytes |
876 | actually read, zero when no further transfer is possible, and -1 on | |
877 | error. Return of a positive value smaller than LEN does not | |
878 | indicate there's no more to be read, only the end of the transfer. | |
879 | E.g., when GDB reads memory from a traceframe, a first request may | |
880 | be served from a memory block that does not cover the whole request | |
881 | length. A following request gets the rest served from either | |
882 | another block (of the same traceframe) or from the read-only | |
883 | regions. */ | |
219f2f23 PA |
884 | |
885 | static int | |
90d74c30 | 886 | gdb_read_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) |
219f2f23 | 887 | { |
764880b7 | 888 | int res; |
90d74c30 | 889 | |
219f2f23 PA |
890 | if (current_traceframe >= 0) |
891 | { | |
892 | ULONGEST nbytes; | |
893 | ULONGEST length = len; | |
894 | ||
895 | if (traceframe_read_mem (current_traceframe, | |
896 | memaddr, myaddr, len, &nbytes)) | |
9a13b2fa | 897 | return -1; |
219f2f23 | 898 | /* Data read from trace buffer, we're done. */ |
764880b7 PA |
899 | if (nbytes > 0) |
900 | return nbytes; | |
219f2f23 | 901 | if (!in_readonly_region (memaddr, length)) |
764880b7 | 902 | return -1; |
219f2f23 PA |
903 | /* Otherwise we have a valid readonly case, fall through. */ |
904 | /* (assume no half-trace half-real blocks for now) */ | |
905 | } | |
906 | ||
764880b7 PA |
907 | res = prepare_to_access_memory (); |
908 | if (res == 0) | |
90d74c30 | 909 | { |
f0db101d PA |
910 | if (set_desired_thread (1)) |
911 | res = read_inferior_memory (memaddr, myaddr, len); | |
912 | else | |
913 | res = 1; | |
0146f85b | 914 | done_accessing_memory (); |
90d74c30 | 915 | |
764880b7 PA |
916 | return res == 0 ? len : -1; |
917 | } | |
918 | else | |
919 | return -1; | |
219f2f23 PA |
920 | } |
921 | ||
922 | /* Write trace frame or inferior memory. Actually, writing to trace | |
923 | frames is forbidden. */ | |
924 | ||
925 | static int | |
90d74c30 | 926 | gdb_write_memory (CORE_ADDR memaddr, const unsigned char *myaddr, int len) |
219f2f23 PA |
927 | { |
928 | if (current_traceframe >= 0) | |
929 | return EIO; | |
930 | else | |
90d74c30 PA |
931 | { |
932 | int ret; | |
933 | ||
934 | ret = prepare_to_access_memory (); | |
935 | if (ret == 0) | |
936 | { | |
f0db101d PA |
937 | if (set_desired_thread (1)) |
938 | ret = write_inferior_memory (memaddr, myaddr, len); | |
939 | else | |
940 | ret = EIO; | |
0146f85b | 941 | done_accessing_memory (); |
90d74c30 PA |
942 | } |
943 | return ret; | |
944 | } | |
219f2f23 PA |
945 | } |
946 | ||
08388c79 DE |
947 | /* Subroutine of handle_search_memory to simplify it. */ |
948 | ||
949 | static int | |
950 | handle_search_memory_1 (CORE_ADDR start_addr, CORE_ADDR search_space_len, | |
951 | gdb_byte *pattern, unsigned pattern_len, | |
952 | gdb_byte *search_buf, | |
953 | unsigned chunk_size, unsigned search_buf_size, | |
954 | CORE_ADDR *found_addrp) | |
955 | { | |
956 | /* Prime the search buffer. */ | |
957 | ||
764880b7 PA |
958 | if (gdb_read_memory (start_addr, search_buf, search_buf_size) |
959 | != search_buf_size) | |
08388c79 | 960 | { |
b3dc46ff AB |
961 | warning ("Unable to access %ld bytes of target " |
962 | "memory at 0x%lx, halting search.", | |
963 | (long) search_buf_size, (long) start_addr); | |
08388c79 DE |
964 | return -1; |
965 | } | |
966 | ||
967 | /* Perform the search. | |
968 | ||
969 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
970 | When we've scanned N bytes we copy the trailing bytes to the start and | |
971 | read in another N bytes. */ | |
972 | ||
973 | while (search_space_len >= pattern_len) | |
974 | { | |
975 | gdb_byte *found_ptr; | |
976 | unsigned nr_search_bytes = (search_space_len < search_buf_size | |
977 | ? search_space_len | |
978 | : search_buf_size); | |
979 | ||
d6f85c84 SM |
980 | found_ptr = (gdb_byte *) memmem (search_buf, nr_search_bytes, pattern, |
981 | pattern_len); | |
08388c79 DE |
982 | |
983 | if (found_ptr != NULL) | |
984 | { | |
985 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
986 | *found_addrp = found_addr; | |
987 | return 1; | |
988 | } | |
989 | ||
990 | /* Not found in this chunk, skip to next chunk. */ | |
991 | ||
992 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
993 | if (search_space_len >= chunk_size) | |
994 | search_space_len -= chunk_size; | |
995 | else | |
996 | search_space_len = 0; | |
997 | ||
998 | if (search_space_len >= pattern_len) | |
999 | { | |
1000 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 1001 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
1002 | int nr_to_read; |
1003 | ||
1004 | /* Copy the trailing part of the previous iteration to the front | |
1005 | of the buffer for the next iteration. */ | |
1006 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
1007 | ||
1008 | nr_to_read = (search_space_len - keep_len < chunk_size | |
1009 | ? search_space_len - keep_len | |
1010 | : chunk_size); | |
1011 | ||
90d74c30 | 1012 | if (gdb_read_memory (read_addr, search_buf + keep_len, |
764880b7 | 1013 | nr_to_read) != search_buf_size) |
08388c79 | 1014 | { |
b3dc46ff | 1015 | warning ("Unable to access %ld bytes of target memory " |
493e2a69 | 1016 | "at 0x%lx, halting search.", |
b3dc46ff | 1017 | (long) nr_to_read, (long) read_addr); |
08388c79 DE |
1018 | return -1; |
1019 | } | |
1020 | ||
1021 | start_addr += chunk_size; | |
1022 | } | |
1023 | } | |
1024 | ||
1025 | /* Not found. */ | |
1026 | ||
1027 | return 0; | |
1028 | } | |
1029 | ||
1030 | /* Handle qSearch:memory packets. */ | |
1031 | ||
1032 | static void | |
1033 | handle_search_memory (char *own_buf, int packet_len) | |
1034 | { | |
1035 | CORE_ADDR start_addr; | |
1036 | CORE_ADDR search_space_len; | |
1037 | gdb_byte *pattern; | |
1038 | unsigned int pattern_len; | |
1039 | /* NOTE: also defined in find.c testcase. */ | |
1040 | #define SEARCH_CHUNK_SIZE 16000 | |
1041 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
1042 | /* Buffer to hold memory contents for searching. */ | |
1043 | gdb_byte *search_buf; | |
1044 | unsigned search_buf_size; | |
1045 | int found; | |
1046 | CORE_ADDR found_addr; | |
1047 | int cmd_name_len = sizeof ("qSearch:memory:") - 1; | |
1048 | ||
224c3ddb | 1049 | pattern = (gdb_byte *) malloc (packet_len); |
08388c79 DE |
1050 | if (pattern == NULL) |
1051 | { | |
5e1471f5 | 1052 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
1053 | strcpy (own_buf, "E00"); |
1054 | return; | |
1055 | } | |
1056 | if (decode_search_memory_packet (own_buf + cmd_name_len, | |
1057 | packet_len - cmd_name_len, | |
1058 | &start_addr, &search_space_len, | |
1059 | pattern, &pattern_len) < 0) | |
1060 | { | |
1061 | free (pattern); | |
5e1471f5 | 1062 | error ("Error in parsing qSearch:memory packet"); |
08388c79 DE |
1063 | strcpy (own_buf, "E00"); |
1064 | return; | |
1065 | } | |
1066 | ||
1067 | search_buf_size = chunk_size + pattern_len - 1; | |
1068 | ||
1069 | /* No point in trying to allocate a buffer larger than the search space. */ | |
1070 | if (search_space_len < search_buf_size) | |
1071 | search_buf_size = search_space_len; | |
1072 | ||
224c3ddb | 1073 | search_buf = (gdb_byte *) malloc (search_buf_size); |
08388c79 DE |
1074 | if (search_buf == NULL) |
1075 | { | |
1076 | free (pattern); | |
5e1471f5 | 1077 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
1078 | strcpy (own_buf, "E00"); |
1079 | return; | |
1080 | } | |
1081 | ||
1082 | found = handle_search_memory_1 (start_addr, search_space_len, | |
1083 | pattern, pattern_len, | |
1084 | search_buf, chunk_size, search_buf_size, | |
1085 | &found_addr); | |
1086 | ||
1087 | if (found > 0) | |
1088 | sprintf (own_buf, "1,%lx", (long) found_addr); | |
1089 | else if (found == 0) | |
1090 | strcpy (own_buf, "0"); | |
1091 | else | |
1092 | strcpy (own_buf, "E00"); | |
1093 | ||
1094 | free (search_buf); | |
1095 | free (pattern); | |
1096 | } | |
1097 | ||
2d717e4f DJ |
1098 | #define require_running(BUF) \ |
1099 | if (!target_running ()) \ | |
1100 | { \ | |
1101 | write_enn (BUF); \ | |
1102 | return; \ | |
1103 | } | |
1104 | ||
87ce2a04 DE |
1105 | /* Parse options to --debug-format= and "monitor set debug-format". |
1106 | ARG is the text after "--debug-format=" or "monitor set debug-format". | |
1107 | IS_MONITOR is non-zero if we're invoked via "monitor set debug-format". | |
1108 | This triggers calls to monitor_output. | |
1109 | The result is NULL if all options were parsed ok, otherwise an error | |
1110 | message which the caller must free. | |
1111 | ||
1112 | N.B. These commands affect all debug format settings, they are not | |
1113 | cumulative. If a format is not specified, it is turned off. | |
1114 | However, we don't go to extra trouble with things like | |
1115 | "monitor set debug-format all,none,timestamp". | |
1116 | Instead we just parse them one at a time, in order. | |
1117 | ||
1118 | The syntax for "monitor set debug" we support here is not identical | |
1119 | to gdb's "set debug foo on|off" because we also use this function to | |
1120 | parse "--debug-format=foo,bar". */ | |
1121 | ||
1122 | static char * | |
1123 | parse_debug_format_options (const char *arg, int is_monitor) | |
1124 | { | |
1125 | VEC (char_ptr) *options; | |
1126 | int ix; | |
1127 | char *option; | |
1128 | ||
1129 | /* First turn all debug format options off. */ | |
1130 | debug_timestamp = 0; | |
1131 | ||
1132 | /* First remove leading spaces, for "monitor set debug-format". */ | |
1133 | while (isspace (*arg)) | |
1134 | ++arg; | |
1135 | ||
1136 | options = delim_string_to_char_ptr_vec (arg, ','); | |
1137 | ||
1138 | for (ix = 0; VEC_iterate (char_ptr, options, ix, option); ++ix) | |
1139 | { | |
1140 | if (strcmp (option, "all") == 0) | |
1141 | { | |
1142 | debug_timestamp = 1; | |
1143 | if (is_monitor) | |
1144 | monitor_output ("All extra debug format options enabled.\n"); | |
1145 | } | |
1146 | else if (strcmp (option, "none") == 0) | |
1147 | { | |
1148 | debug_timestamp = 0; | |
1149 | if (is_monitor) | |
1150 | monitor_output ("All extra debug format options disabled.\n"); | |
1151 | } | |
87ce2a04 DE |
1152 | else if (strcmp (option, "timestamp") == 0) |
1153 | { | |
1154 | debug_timestamp = 1; | |
1155 | if (is_monitor) | |
1156 | monitor_output ("Timestamps will be added to debug output.\n"); | |
1157 | } | |
87ce2a04 DE |
1158 | else if (*option == '\0') |
1159 | { | |
1160 | /* An empty option, e.g., "--debug-format=foo,,bar", is ignored. */ | |
1161 | continue; | |
1162 | } | |
1163 | else | |
1164 | { | |
1165 | char *msg = xstrprintf ("Unknown debug-format argument: \"%s\"\n", | |
1166 | option); | |
1167 | ||
1168 | free_char_ptr_vec (options); | |
1169 | return msg; | |
1170 | } | |
1171 | } | |
1172 | ||
1173 | free_char_ptr_vec (options); | |
1174 | return NULL; | |
1175 | } | |
1176 | ||
cdbfd419 PP |
1177 | /* Handle monitor commands not handled by target-specific handlers. */ |
1178 | ||
1179 | static void | |
d73f2619 | 1180 | handle_monitor_command (char *mon, char *own_buf) |
cdbfd419 PP |
1181 | { |
1182 | if (strcmp (mon, "set debug 1") == 0) | |
1183 | { | |
1184 | debug_threads = 1; | |
1185 | monitor_output ("Debug output enabled.\n"); | |
1186 | } | |
1187 | else if (strcmp (mon, "set debug 0") == 0) | |
1188 | { | |
1189 | debug_threads = 0; | |
1190 | monitor_output ("Debug output disabled.\n"); | |
1191 | } | |
1192 | else if (strcmp (mon, "set debug-hw-points 1") == 0) | |
1193 | { | |
c5e92cca | 1194 | show_debug_regs = 1; |
cdbfd419 PP |
1195 | monitor_output ("H/W point debugging output enabled.\n"); |
1196 | } | |
1197 | else if (strcmp (mon, "set debug-hw-points 0") == 0) | |
1198 | { | |
c5e92cca | 1199 | show_debug_regs = 0; |
cdbfd419 PP |
1200 | monitor_output ("H/W point debugging output disabled.\n"); |
1201 | } | |
1202 | else if (strcmp (mon, "set remote-debug 1") == 0) | |
1203 | { | |
1204 | remote_debug = 1; | |
1205 | monitor_output ("Protocol debug output enabled.\n"); | |
1206 | } | |
1207 | else if (strcmp (mon, "set remote-debug 0") == 0) | |
1208 | { | |
1209 | remote_debug = 0; | |
1210 | monitor_output ("Protocol debug output disabled.\n"); | |
1211 | } | |
61012eef | 1212 | else if (startswith (mon, "set debug-format ")) |
87ce2a04 DE |
1213 | { |
1214 | char *error_msg | |
1215 | = parse_debug_format_options (mon + sizeof ("set debug-format ") - 1, | |
1216 | 1); | |
1217 | ||
1218 | if (error_msg != NULL) | |
1219 | { | |
1220 | monitor_output (error_msg); | |
1221 | monitor_show_help (); | |
1222 | write_enn (own_buf); | |
1223 | xfree (error_msg); | |
1224 | } | |
1225 | } | |
cdbfd419 PP |
1226 | else if (strcmp (mon, "help") == 0) |
1227 | monitor_show_help (); | |
1228 | else if (strcmp (mon, "exit") == 0) | |
1229 | exit_requested = 1; | |
1230 | else | |
1231 | { | |
1232 | monitor_output ("Unknown monitor command.\n\n"); | |
1233 | monitor_show_help (); | |
1234 | write_enn (own_buf); | |
1235 | } | |
1236 | } | |
1237 | ||
d08aafef PA |
1238 | /* Associates a callback with each supported qXfer'able object. */ |
1239 | ||
1240 | struct qxfer | |
1241 | { | |
1242 | /* The object this handler handles. */ | |
1243 | const char *object; | |
1244 | ||
1245 | /* Request that the target transfer up to LEN 8-bit bytes of the | |
1246 | target's OBJECT. The OFFSET, for a seekable object, specifies | |
1247 | the starting point. The ANNEX can be used to provide additional | |
1248 | data-specific information to the target. | |
1249 | ||
1250 | Return the number of bytes actually transfered, zero when no | |
5cc22e4c MM |
1251 | further transfer is possible, -1 on error, -2 when the transfer |
1252 | is not supported, and -3 on a verbose error message that should | |
1253 | be preserved. Return of a positive value smaller than LEN does | |
1254 | not indicate the end of the object, only the end of the transfer. | |
d08aafef PA |
1255 | |
1256 | One, and only one, of readbuf or writebuf must be non-NULL. */ | |
1257 | int (*xfer) (const char *annex, | |
1258 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1259 | ULONGEST offset, LONGEST len); | |
1260 | }; | |
1261 | ||
1262 | /* Handle qXfer:auxv:read. */ | |
1263 | ||
1264 | static int | |
1265 | handle_qxfer_auxv (const char *annex, | |
1266 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1267 | ULONGEST offset, LONGEST len) | |
1268 | { | |
1269 | if (the_target->read_auxv == NULL || writebuf != NULL) | |
1270 | return -2; | |
1271 | ||
f0db101d | 1272 | if (annex[0] != '\0' || current_thread == NULL) |
d08aafef PA |
1273 | return -1; |
1274 | ||
1275 | return (*the_target->read_auxv) (offset, readbuf, len); | |
1276 | } | |
1277 | ||
e57f1de3 GB |
1278 | /* Handle qXfer:exec-file:read. */ |
1279 | ||
1280 | static int | |
1281 | handle_qxfer_exec_file (const char *const_annex, | |
1282 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1283 | ULONGEST offset, LONGEST len) | |
1284 | { | |
835205d0 | 1285 | char *file; |
e57f1de3 GB |
1286 | ULONGEST pid; |
1287 | int total_len; | |
1288 | ||
1289 | if (the_target->pid_to_exec_file == NULL || writebuf != NULL) | |
1290 | return -2; | |
1291 | ||
835205d0 GB |
1292 | if (const_annex[0] == '\0') |
1293 | { | |
1294 | if (current_thread == NULL) | |
1295 | return -1; | |
1296 | ||
1297 | pid = pid_of (current_thread); | |
1298 | } | |
1299 | else | |
1300 | { | |
224c3ddb | 1301 | char *annex = (char *) alloca (strlen (const_annex) + 1); |
835205d0 GB |
1302 | |
1303 | strcpy (annex, const_annex); | |
1304 | annex = unpack_varlen_hex (annex, &pid); | |
1305 | ||
1306 | if (annex[0] != '\0') | |
1307 | return -1; | |
1308 | } | |
1309 | ||
1310 | if (pid <= 0) | |
e57f1de3 GB |
1311 | return -1; |
1312 | ||
1313 | file = (*the_target->pid_to_exec_file) (pid); | |
1314 | if (file == NULL) | |
1315 | return -1; | |
1316 | ||
1317 | total_len = strlen (file); | |
1318 | ||
1319 | if (offset > total_len) | |
1320 | return -1; | |
1321 | ||
1322 | if (offset + len > total_len) | |
1323 | len = total_len - offset; | |
1324 | ||
1325 | memcpy (readbuf, file + offset, len); | |
1326 | return len; | |
1327 | } | |
1328 | ||
d08aafef PA |
1329 | /* Handle qXfer:features:read. */ |
1330 | ||
1331 | static int | |
1332 | handle_qxfer_features (const char *annex, | |
1333 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1334 | ULONGEST offset, LONGEST len) | |
1335 | { | |
1336 | const char *document; | |
1337 | size_t total_len; | |
1338 | ||
1339 | if (writebuf != NULL) | |
1340 | return -2; | |
1341 | ||
1342 | if (!target_running ()) | |
1343 | return -1; | |
1344 | ||
1345 | /* Grab the correct annex. */ | |
1346 | document = get_features_xml (annex); | |
1347 | if (document == NULL) | |
1348 | return -1; | |
1349 | ||
1350 | total_len = strlen (document); | |
1351 | ||
1352 | if (offset > total_len) | |
1353 | return -1; | |
1354 | ||
1355 | if (offset + len > total_len) | |
1356 | len = total_len - offset; | |
1357 | ||
1358 | memcpy (readbuf, document + offset, len); | |
1359 | return len; | |
1360 | } | |
1361 | ||
649ebbca DE |
1362 | /* Worker routine for handle_qxfer_libraries. |
1363 | Add to the length pointed to by ARG a conservative estimate of the | |
1364 | length needed to transmit the file name of INF. */ | |
1365 | ||
1366 | static void | |
1367 | accumulate_file_name_length (struct inferior_list_entry *inf, void *arg) | |
1368 | { | |
1369 | struct dll_info *dll = (struct dll_info *) inf; | |
9a3c8263 | 1370 | unsigned int *total_len = (unsigned int *) arg; |
649ebbca DE |
1371 | |
1372 | /* Over-estimate the necessary memory. Assume that every character | |
1373 | in the library name must be escaped. */ | |
1374 | *total_len += 128 + 6 * strlen (dll->name); | |
1375 | } | |
1376 | ||
1377 | /* Worker routine for handle_qxfer_libraries. | |
1378 | Emit the XML to describe the library in INF. */ | |
1379 | ||
1380 | static void | |
1381 | emit_dll_description (struct inferior_list_entry *inf, void *arg) | |
1382 | { | |
1383 | struct dll_info *dll = (struct dll_info *) inf; | |
9a3c8263 | 1384 | char **p_ptr = (char **) arg; |
649ebbca DE |
1385 | char *p = *p_ptr; |
1386 | char *name; | |
1387 | ||
1388 | strcpy (p, " <library name=\""); | |
1389 | p = p + strlen (p); | |
1390 | name = xml_escape_text (dll->name); | |
1391 | strcpy (p, name); | |
1392 | free (name); | |
1393 | p = p + strlen (p); | |
1394 | strcpy (p, "\"><segment address=\""); | |
1395 | p = p + strlen (p); | |
1396 | sprintf (p, "0x%lx", (long) dll->base_addr); | |
1397 | p = p + strlen (p); | |
1398 | strcpy (p, "\"/></library>\n"); | |
1399 | p = p + strlen (p); | |
1400 | ||
1401 | *p_ptr = p; | |
1402 | } | |
1403 | ||
d08aafef PA |
1404 | /* Handle qXfer:libraries:read. */ |
1405 | ||
1406 | static int | |
1407 | handle_qxfer_libraries (const char *annex, | |
1408 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1409 | ULONGEST offset, LONGEST len) | |
1410 | { | |
1411 | unsigned int total_len; | |
1412 | char *document, *p; | |
d08aafef PA |
1413 | |
1414 | if (writebuf != NULL) | |
1415 | return -2; | |
1416 | ||
f0db101d | 1417 | if (annex[0] != '\0' || current_thread == NULL) |
d08aafef PA |
1418 | return -1; |
1419 | ||
d08aafef | 1420 | total_len = 64; |
649ebbca DE |
1421 | for_each_inferior_with_data (&all_dlls, accumulate_file_name_length, |
1422 | &total_len); | |
d08aafef | 1423 | |
224c3ddb | 1424 | document = (char *) malloc (total_len); |
d08aafef PA |
1425 | if (document == NULL) |
1426 | return -1; | |
1427 | ||
24c05f46 | 1428 | strcpy (document, "<library-list version=\"1.0\">\n"); |
d08aafef PA |
1429 | p = document + strlen (document); |
1430 | ||
649ebbca | 1431 | for_each_inferior_with_data (&all_dlls, emit_dll_description, &p); |
d08aafef PA |
1432 | |
1433 | strcpy (p, "</library-list>\n"); | |
1434 | ||
1435 | total_len = strlen (document); | |
1436 | ||
1437 | if (offset > total_len) | |
1438 | { | |
1439 | free (document); | |
1440 | return -1; | |
1441 | } | |
1442 | ||
1443 | if (offset + len > total_len) | |
1444 | len = total_len - offset; | |
1445 | ||
1446 | memcpy (readbuf, document + offset, len); | |
1447 | free (document); | |
1448 | return len; | |
1449 | } | |
1450 | ||
2268b414 JK |
1451 | /* Handle qXfer:libraries-svr4:read. */ |
1452 | ||
1453 | static int | |
1454 | handle_qxfer_libraries_svr4 (const char *annex, | |
1455 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1456 | ULONGEST offset, LONGEST len) | |
1457 | { | |
1458 | if (writebuf != NULL) | |
1459 | return -2; | |
1460 | ||
f0db101d | 1461 | if (current_thread == NULL || the_target->qxfer_libraries_svr4 == NULL) |
2268b414 JK |
1462 | return -1; |
1463 | ||
1464 | return the_target->qxfer_libraries_svr4 (annex, readbuf, writebuf, offset, len); | |
1465 | } | |
1466 | ||
d08aafef PA |
1467 | /* Handle qXfer:osadata:read. */ |
1468 | ||
1469 | static int | |
1470 | handle_qxfer_osdata (const char *annex, | |
1471 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1472 | ULONGEST offset, LONGEST len) | |
1473 | { | |
1474 | if (the_target->qxfer_osdata == NULL || writebuf != NULL) | |
1475 | return -2; | |
1476 | ||
1477 | return (*the_target->qxfer_osdata) (annex, readbuf, NULL, offset, len); | |
1478 | } | |
1479 | ||
1480 | /* Handle qXfer:siginfo:read and qXfer:siginfo:write. */ | |
1481 | ||
1482 | static int | |
1483 | handle_qxfer_siginfo (const char *annex, | |
1484 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1485 | ULONGEST offset, LONGEST len) | |
1486 | { | |
1487 | if (the_target->qxfer_siginfo == NULL) | |
1488 | return -2; | |
1489 | ||
f0db101d | 1490 | if (annex[0] != '\0' || current_thread == NULL) |
d08aafef PA |
1491 | return -1; |
1492 | ||
1493 | return (*the_target->qxfer_siginfo) (annex, readbuf, writebuf, offset, len); | |
1494 | } | |
1495 | ||
1496 | /* Handle qXfer:spu:read and qXfer:spu:write. */ | |
1497 | ||
1498 | static int | |
1499 | handle_qxfer_spu (const char *annex, | |
1500 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1501 | ULONGEST offset, LONGEST len) | |
1502 | { | |
1503 | if (the_target->qxfer_spu == NULL) | |
1504 | return -2; | |
1505 | ||
f0db101d | 1506 | if (current_thread == NULL) |
d08aafef PA |
1507 | return -1; |
1508 | ||
1509 | return (*the_target->qxfer_spu) (annex, readbuf, writebuf, offset, len); | |
1510 | } | |
1511 | ||
1512 | /* Handle qXfer:statictrace:read. */ | |
1513 | ||
1514 | static int | |
1515 | handle_qxfer_statictrace (const char *annex, | |
1516 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1517 | ULONGEST offset, LONGEST len) | |
1518 | { | |
1519 | ULONGEST nbytes; | |
1520 | ||
1521 | if (writebuf != NULL) | |
1522 | return -2; | |
1523 | ||
f0db101d | 1524 | if (annex[0] != '\0' || current_thread == NULL || current_traceframe == -1) |
d08aafef PA |
1525 | return -1; |
1526 | ||
1527 | if (traceframe_read_sdata (current_traceframe, offset, | |
1528 | readbuf, len, &nbytes)) | |
1529 | return -1; | |
1530 | return nbytes; | |
1531 | } | |
1532 | ||
649ebbca DE |
1533 | /* Helper for handle_qxfer_threads_proper. |
1534 | Emit the XML to describe the thread of INF. */ | |
d08aafef | 1535 | |
dc146f7c | 1536 | static void |
649ebbca | 1537 | handle_qxfer_threads_worker (struct inferior_list_entry *inf, void *arg) |
dc146f7c | 1538 | { |
649ebbca | 1539 | struct thread_info *thread = (struct thread_info *) inf; |
9a3c8263 | 1540 | struct buffer *buffer = (struct buffer *) arg; |
649ebbca DE |
1541 | ptid_t ptid = thread_to_gdb_id (thread); |
1542 | char ptid_s[100]; | |
1543 | int core = target_core_of_thread (ptid); | |
1544 | char core_s[21]; | |
79efa585 | 1545 | const char *name = target_thread_name (ptid); |
dc146f7c | 1546 | |
649ebbca | 1547 | write_ptid (ptid_s, ptid); |
dc146f7c | 1548 | |
79efa585 SM |
1549 | buffer_xml_printf (buffer, "<thread id=\"%s\"", ptid_s); |
1550 | ||
649ebbca | 1551 | if (core != -1) |
dc146f7c | 1552 | { |
649ebbca | 1553 | sprintf (core_s, "%d", core); |
79efa585 | 1554 | buffer_xml_printf (buffer, " core=\"%s\"", core_s); |
649ebbca | 1555 | } |
79efa585 SM |
1556 | |
1557 | if (name != NULL) | |
1558 | buffer_xml_printf (buffer, " name=\"%s\"", name); | |
1559 | ||
1560 | buffer_xml_printf (buffer, "/>\n"); | |
649ebbca | 1561 | } |
dc146f7c | 1562 | |
649ebbca | 1563 | /* Helper for handle_qxfer_threads. */ |
dc146f7c | 1564 | |
649ebbca DE |
1565 | static void |
1566 | handle_qxfer_threads_proper (struct buffer *buffer) | |
1567 | { | |
1568 | buffer_grow_str (buffer, "<threads>\n"); | |
1569 | ||
1570 | for_each_inferior_with_data (&all_threads, handle_qxfer_threads_worker, | |
1571 | buffer); | |
dc146f7c VP |
1572 | |
1573 | buffer_grow_str0 (buffer, "</threads>\n"); | |
1574 | } | |
1575 | ||
d08aafef PA |
1576 | /* Handle qXfer:threads:read. */ |
1577 | ||
dc146f7c | 1578 | static int |
d08aafef PA |
1579 | handle_qxfer_threads (const char *annex, |
1580 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1581 | ULONGEST offset, LONGEST len) | |
dc146f7c VP |
1582 | { |
1583 | static char *result = 0; | |
1584 | static unsigned int result_length = 0; | |
1585 | ||
d08aafef PA |
1586 | if (writebuf != NULL) |
1587 | return -2; | |
1588 | ||
f0db101d | 1589 | if (annex[0] != '\0') |
d08aafef | 1590 | return -1; |
dc146f7c VP |
1591 | |
1592 | if (offset == 0) | |
1593 | { | |
1594 | struct buffer buffer; | |
1595 | /* When asked for data at offset 0, generate everything and store into | |
1596 | 'result'. Successive reads will be served off 'result'. */ | |
1597 | if (result) | |
1598 | free (result); | |
1599 | ||
1600 | buffer_init (&buffer); | |
1601 | ||
d08aafef | 1602 | handle_qxfer_threads_proper (&buffer); |
dc146f7c VP |
1603 | |
1604 | result = buffer_finish (&buffer); | |
1605 | result_length = strlen (result); | |
1606 | buffer_free (&buffer); | |
1607 | } | |
1608 | ||
1609 | if (offset >= result_length) | |
1610 | { | |
1611 | /* We're out of data. */ | |
1612 | free (result); | |
1613 | result = NULL; | |
1614 | result_length = 0; | |
1615 | return 0; | |
1616 | } | |
1617 | ||
d08aafef PA |
1618 | if (len > result_length - offset) |
1619 | len = result_length - offset; | |
1620 | ||
1621 | memcpy (readbuf, result + offset, len); | |
1622 | ||
1623 | return len; | |
1624 | } | |
1625 | ||
b3b9301e PA |
1626 | /* Handle qXfer:traceframe-info:read. */ |
1627 | ||
1628 | static int | |
1629 | handle_qxfer_traceframe_info (const char *annex, | |
1630 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1631 | ULONGEST offset, LONGEST len) | |
1632 | { | |
1633 | static char *result = 0; | |
1634 | static unsigned int result_length = 0; | |
1635 | ||
1636 | if (writebuf != NULL) | |
1637 | return -2; | |
1638 | ||
1639 | if (!target_running () || annex[0] != '\0' || current_traceframe == -1) | |
1640 | return -1; | |
1641 | ||
1642 | if (offset == 0) | |
1643 | { | |
1644 | struct buffer buffer; | |
1645 | ||
1646 | /* When asked for data at offset 0, generate everything and | |
1647 | store into 'result'. Successive reads will be served off | |
1648 | 'result'. */ | |
1649 | free (result); | |
1650 | ||
1651 | buffer_init (&buffer); | |
1652 | ||
1653 | traceframe_read_info (current_traceframe, &buffer); | |
1654 | ||
1655 | result = buffer_finish (&buffer); | |
1656 | result_length = strlen (result); | |
1657 | buffer_free (&buffer); | |
1658 | } | |
1659 | ||
1660 | if (offset >= result_length) | |
1661 | { | |
1662 | /* We're out of data. */ | |
1663 | free (result); | |
1664 | result = NULL; | |
1665 | result_length = 0; | |
1666 | return 0; | |
1667 | } | |
1668 | ||
1669 | if (len > result_length - offset) | |
1670 | len = result_length - offset; | |
1671 | ||
1672 | memcpy (readbuf, result + offset, len); | |
1673 | return len; | |
1674 | } | |
1675 | ||
78d85199 YQ |
1676 | /* Handle qXfer:fdpic:read. */ |
1677 | ||
1678 | static int | |
1679 | handle_qxfer_fdpic (const char *annex, gdb_byte *readbuf, | |
1680 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1681 | { | |
1682 | if (the_target->read_loadmap == NULL) | |
1683 | return -2; | |
1684 | ||
f0db101d | 1685 | if (current_thread == NULL) |
78d85199 YQ |
1686 | return -1; |
1687 | ||
1688 | return (*the_target->read_loadmap) (annex, offset, readbuf, len); | |
1689 | } | |
1690 | ||
9accd112 MM |
1691 | /* Handle qXfer:btrace:read. */ |
1692 | ||
1693 | static int | |
1694 | handle_qxfer_btrace (const char *annex, | |
1695 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1696 | ULONGEST offset, LONGEST len) | |
1697 | { | |
1698 | static struct buffer cache; | |
1699 | struct thread_info *thread; | |
add67df8 PA |
1700 | enum btrace_read_type type; |
1701 | int result; | |
9accd112 MM |
1702 | |
1703 | if (the_target->read_btrace == NULL || writebuf != NULL) | |
1704 | return -2; | |
1705 | ||
9accd112 MM |
1706 | if (ptid_equal (general_thread, null_ptid) |
1707 | || ptid_equal (general_thread, minus_one_ptid)) | |
1708 | { | |
1709 | strcpy (own_buf, "E.Must select a single thread."); | |
1710 | return -3; | |
1711 | } | |
1712 | ||
1713 | thread = find_thread_ptid (general_thread); | |
1714 | if (thread == NULL) | |
1715 | { | |
1716 | strcpy (own_buf, "E.No such thread."); | |
1717 | return -3; | |
1718 | } | |
1719 | ||
1720 | if (thread->btrace == NULL) | |
1721 | { | |
1722 | strcpy (own_buf, "E.Btrace not enabled."); | |
1723 | return -3; | |
1724 | } | |
1725 | ||
1726 | if (strcmp (annex, "all") == 0) | |
864089d2 | 1727 | type = BTRACE_READ_ALL; |
9accd112 | 1728 | else if (strcmp (annex, "new") == 0) |
864089d2 | 1729 | type = BTRACE_READ_NEW; |
969c39fb MM |
1730 | else if (strcmp (annex, "delta") == 0) |
1731 | type = BTRACE_READ_DELTA; | |
9accd112 MM |
1732 | else |
1733 | { | |
1734 | strcpy (own_buf, "E.Bad annex."); | |
1735 | return -3; | |
1736 | } | |
1737 | ||
1738 | if (offset == 0) | |
1739 | { | |
1740 | buffer_free (&cache); | |
1741 | ||
969c39fb MM |
1742 | result = target_read_btrace (thread->btrace, &cache, type); |
1743 | if (result != 0) | |
1744 | { | |
1745 | memcpy (own_buf, cache.buffer, cache.used_size); | |
1746 | return -3; | |
1747 | } | |
9accd112 MM |
1748 | } |
1749 | else if (offset > cache.used_size) | |
1750 | { | |
1751 | buffer_free (&cache); | |
1752 | return -3; | |
1753 | } | |
1754 | ||
1755 | if (len > cache.used_size - offset) | |
1756 | len = cache.used_size - offset; | |
1757 | ||
1758 | memcpy (readbuf, cache.buffer + offset, len); | |
1759 | ||
1760 | return len; | |
1761 | } | |
1762 | ||
f4abbc16 MM |
1763 | /* Handle qXfer:btrace-conf:read. */ |
1764 | ||
1765 | static int | |
1766 | handle_qxfer_btrace_conf (const char *annex, | |
1767 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1768 | ULONGEST offset, LONGEST len) | |
1769 | { | |
1770 | static struct buffer cache; | |
1771 | struct thread_info *thread; | |
1772 | int result; | |
1773 | ||
1774 | if (the_target->read_btrace_conf == NULL || writebuf != NULL) | |
1775 | return -2; | |
1776 | ||
f0db101d | 1777 | if (annex[0] != '\0') |
f4abbc16 MM |
1778 | return -1; |
1779 | ||
1780 | if (ptid_equal (general_thread, null_ptid) | |
1781 | || ptid_equal (general_thread, minus_one_ptid)) | |
1782 | { | |
1783 | strcpy (own_buf, "E.Must select a single thread."); | |
1784 | return -3; | |
1785 | } | |
1786 | ||
1787 | thread = find_thread_ptid (general_thread); | |
1788 | if (thread == NULL) | |
1789 | { | |
1790 | strcpy (own_buf, "E.No such thread."); | |
1791 | return -3; | |
1792 | } | |
1793 | ||
1794 | if (thread->btrace == NULL) | |
1795 | { | |
1796 | strcpy (own_buf, "E.Btrace not enabled."); | |
1797 | return -3; | |
1798 | } | |
1799 | ||
1800 | if (offset == 0) | |
1801 | { | |
1802 | buffer_free (&cache); | |
1803 | ||
1804 | result = target_read_btrace_conf (thread->btrace, &cache); | |
1805 | if (result != 0) | |
1806 | { | |
1807 | memcpy (own_buf, cache.buffer, cache.used_size); | |
1808 | return -3; | |
1809 | } | |
1810 | } | |
1811 | else if (offset > cache.used_size) | |
1812 | { | |
1813 | buffer_free (&cache); | |
1814 | return -3; | |
1815 | } | |
1816 | ||
1817 | if (len > cache.used_size - offset) | |
1818 | len = cache.used_size - offset; | |
1819 | ||
1820 | memcpy (readbuf, cache.buffer + offset, len); | |
1821 | ||
1822 | return len; | |
1823 | } | |
1824 | ||
d08aafef PA |
1825 | static const struct qxfer qxfer_packets[] = |
1826 | { | |
1827 | { "auxv", handle_qxfer_auxv }, | |
9accd112 | 1828 | { "btrace", handle_qxfer_btrace }, |
f4abbc16 | 1829 | { "btrace-conf", handle_qxfer_btrace_conf }, |
e57f1de3 | 1830 | { "exec-file", handle_qxfer_exec_file}, |
78d85199 | 1831 | { "fdpic", handle_qxfer_fdpic}, |
d08aafef PA |
1832 | { "features", handle_qxfer_features }, |
1833 | { "libraries", handle_qxfer_libraries }, | |
2268b414 | 1834 | { "libraries-svr4", handle_qxfer_libraries_svr4 }, |
d08aafef PA |
1835 | { "osdata", handle_qxfer_osdata }, |
1836 | { "siginfo", handle_qxfer_siginfo }, | |
1837 | { "spu", handle_qxfer_spu }, | |
1838 | { "statictrace", handle_qxfer_statictrace }, | |
1839 | { "threads", handle_qxfer_threads }, | |
b3b9301e | 1840 | { "traceframe-info", handle_qxfer_traceframe_info }, |
d08aafef PA |
1841 | }; |
1842 | ||
1843 | static int | |
1844 | handle_qxfer (char *own_buf, int packet_len, int *new_packet_len_p) | |
1845 | { | |
1846 | int i; | |
1847 | char *object; | |
1848 | char *rw; | |
1849 | char *annex; | |
1850 | char *offset; | |
1851 | ||
61012eef | 1852 | if (!startswith (own_buf, "qXfer:")) |
d08aafef PA |
1853 | return 0; |
1854 | ||
1855 | /* Grab the object, r/w and annex. */ | |
1856 | if (decode_xfer (own_buf + 6, &object, &rw, &annex, &offset) < 0) | |
1857 | { | |
1858 | write_enn (own_buf); | |
1859 | return 1; | |
1860 | } | |
1861 | ||
1862 | for (i = 0; | |
1863 | i < sizeof (qxfer_packets) / sizeof (qxfer_packets[0]); | |
1864 | i++) | |
1865 | { | |
1866 | const struct qxfer *q = &qxfer_packets[i]; | |
1867 | ||
1868 | if (strcmp (object, q->object) == 0) | |
1869 | { | |
1870 | if (strcmp (rw, "read") == 0) | |
1871 | { | |
1872 | unsigned char *data; | |
1873 | int n; | |
1874 | CORE_ADDR ofs; | |
1875 | unsigned int len; | |
1876 | ||
1877 | /* Grab the offset and length. */ | |
1878 | if (decode_xfer_read (offset, &ofs, &len) < 0) | |
1879 | { | |
1880 | write_enn (own_buf); | |
1881 | return 1; | |
1882 | } | |
1883 | ||
1884 | /* Read one extra byte, as an indicator of whether there is | |
1885 | more. */ | |
1886 | if (len > PBUFSIZ - 2) | |
1887 | len = PBUFSIZ - 2; | |
224c3ddb | 1888 | data = (unsigned char *) malloc (len + 1); |
d08aafef PA |
1889 | if (data == NULL) |
1890 | { | |
1891 | write_enn (own_buf); | |
1892 | return 1; | |
1893 | } | |
1894 | n = (*q->xfer) (annex, data, NULL, ofs, len + 1); | |
1895 | if (n == -2) | |
1896 | { | |
1897 | free (data); | |
1898 | return 0; | |
1899 | } | |
5cc22e4c MM |
1900 | else if (n == -3) |
1901 | { | |
1902 | /* Preserve error message. */ | |
1903 | } | |
d08aafef PA |
1904 | else if (n < 0) |
1905 | write_enn (own_buf); | |
1906 | else if (n > len) | |
1907 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); | |
1908 | else | |
1909 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); | |
1910 | ||
1911 | free (data); | |
1912 | return 1; | |
1913 | } | |
1914 | else if (strcmp (rw, "write") == 0) | |
1915 | { | |
1916 | int n; | |
1917 | unsigned int len; | |
1918 | CORE_ADDR ofs; | |
1919 | unsigned char *data; | |
1920 | ||
1921 | strcpy (own_buf, "E00"); | |
224c3ddb | 1922 | data = (unsigned char *) malloc (packet_len - (offset - own_buf)); |
d08aafef PA |
1923 | if (data == NULL) |
1924 | { | |
1925 | write_enn (own_buf); | |
1926 | return 1; | |
1927 | } | |
1928 | if (decode_xfer_write (offset, packet_len - (offset - own_buf), | |
1929 | &ofs, &len, data) < 0) | |
1930 | { | |
1931 | free (data); | |
1932 | write_enn (own_buf); | |
1933 | return 1; | |
1934 | } | |
1935 | ||
1936 | n = (*q->xfer) (annex, NULL, data, ofs, len); | |
1937 | if (n == -2) | |
1938 | { | |
1939 | free (data); | |
1940 | return 0; | |
1941 | } | |
5cc22e4c MM |
1942 | else if (n == -3) |
1943 | { | |
1944 | /* Preserve error message. */ | |
1945 | } | |
d08aafef PA |
1946 | else if (n < 0) |
1947 | write_enn (own_buf); | |
1948 | else | |
1949 | sprintf (own_buf, "%x", n); | |
dc146f7c | 1950 | |
d08aafef PA |
1951 | free (data); |
1952 | return 1; | |
1953 | } | |
dc146f7c | 1954 | |
d08aafef PA |
1955 | return 0; |
1956 | } | |
1957 | } | |
dc146f7c | 1958 | |
d08aafef | 1959 | return 0; |
dc146f7c VP |
1960 | } |
1961 | ||
30ba68cb MS |
1962 | /* Compute 32 bit CRC from inferior memory. |
1963 | ||
1964 | On success, return 32 bit CRC. | |
1965 | On failure, return (unsigned long long) -1. */ | |
1966 | ||
1967 | static unsigned long long | |
1968 | crc32 (CORE_ADDR base, int len, unsigned int crc) | |
1969 | { | |
30ba68cb MS |
1970 | while (len--) |
1971 | { | |
1972 | unsigned char byte = 0; | |
1973 | ||
1974 | /* Return failure if memory read fails. */ | |
1975 | if (read_inferior_memory (base, &byte, 1) != 0) | |
1976 | return (unsigned long long) -1; | |
1977 | ||
65da7f14 | 1978 | crc = xcrc32 (&byte, 1, crc); |
30ba68cb MS |
1979 | base++; |
1980 | } | |
1981 | return (unsigned long long) crc; | |
1982 | } | |
1983 | ||
043c3577 MM |
1984 | /* Add supported btrace packets to BUF. */ |
1985 | ||
1986 | static void | |
1987 | supported_btrace_packets (char *buf) | |
1988 | { | |
b20a6524 MM |
1989 | int btrace_supported = 0; |
1990 | ||
043c3577 | 1991 | if (target_supports_btrace (BTRACE_FORMAT_BTS)) |
d33501a5 MM |
1992 | { |
1993 | strcat (buf, ";Qbtrace:bts+"); | |
1994 | strcat (buf, ";Qbtrace-conf:bts:size+"); | |
b20a6524 MM |
1995 | |
1996 | btrace_supported = 1; | |
d33501a5 | 1997 | } |
b20a6524 MM |
1998 | |
1999 | if (target_supports_btrace (BTRACE_FORMAT_PT)) | |
2000 | { | |
2001 | strcat (buf, ";Qbtrace:pt+"); | |
2002 | strcat (buf, ";Qbtrace-conf:pt:size+"); | |
2003 | ||
2004 | btrace_supported = 1; | |
2005 | } | |
2006 | ||
2007 | if (!btrace_supported) | |
043c3577 MM |
2008 | return; |
2009 | ||
2010 | strcat (buf, ";Qbtrace:off+"); | |
2011 | strcat (buf, ";qXfer:btrace:read+"); | |
f4abbc16 | 2012 | strcat (buf, ";qXfer:btrace-conf:read+"); |
043c3577 MM |
2013 | } |
2014 | ||
ce3a066d | 2015 | /* Handle all of the extended 'q' packets. */ |
d08aafef | 2016 | |
5b3da067 | 2017 | static void |
0e7f50da | 2018 | handle_query (char *own_buf, int packet_len, int *new_packet_len_p) |
ce3a066d | 2019 | { |
0d62e5e8 DJ |
2020 | static struct inferior_list_entry *thread_ptr; |
2021 | ||
bb63802a | 2022 | /* Reply the current thread id. */ |
db42f210 | 2023 | if (strcmp ("qC", own_buf) == 0 && !disable_packet_qC) |
bb63802a | 2024 | { |
95954743 | 2025 | ptid_t gdb_id; |
2d717e4f | 2026 | require_running (own_buf); |
bd99dc85 | 2027 | |
95954743 PA |
2028 | if (!ptid_equal (general_thread, null_ptid) |
2029 | && !ptid_equal (general_thread, minus_one_ptid)) | |
bd99dc85 PA |
2030 | gdb_id = general_thread; |
2031 | else | |
2032 | { | |
649ebbca | 2033 | thread_ptr = get_first_inferior (&all_threads); |
bd99dc85 PA |
2034 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); |
2035 | } | |
2036 | ||
95954743 PA |
2037 | sprintf (own_buf, "QC"); |
2038 | own_buf += 2; | |
4b812f4e | 2039 | write_ptid (own_buf, gdb_id); |
bb63802a UW |
2040 | return; |
2041 | } | |
2042 | ||
ce3a066d DJ |
2043 | if (strcmp ("qSymbol::", own_buf) == 0) |
2044 | { | |
34c65914 PA |
2045 | struct thread_info *save_thread = current_thread; |
2046 | ||
2047 | /* For qSymbol, GDB only changes the current thread if the | |
2048 | previous current thread was of a different process. So if | |
2049 | the previous thread is gone, we need to pick another one of | |
2050 | the same process. This can happen e.g., if we followed an | |
2051 | exec in a non-leader thread. */ | |
2052 | if (current_thread == NULL) | |
2053 | { | |
2054 | current_thread | |
2055 | = find_any_thread_of_pid (ptid_get_pid (general_thread)); | |
2056 | ||
2057 | /* Just in case, if we didn't find a thread, then bail out | |
2058 | instead of crashing. */ | |
2059 | if (current_thread == NULL) | |
2060 | { | |
2061 | write_enn (own_buf); | |
2062 | current_thread = save_thread; | |
2063 | return; | |
2064 | } | |
2065 | } | |
2066 | ||
d3bbe7a0 PA |
2067 | /* GDB is suggesting new symbols have been loaded. This may |
2068 | mean a new shared library has been detected as loaded, so | |
2069 | take the opportunity to check if breakpoints we think are | |
2070 | inserted, still are. Note that it isn't guaranteed that | |
2071 | we'll see this when a shared library is loaded, and nor will | |
2072 | we see this for unloads (although breakpoints in unloaded | |
2073 | libraries shouldn't trigger), as GDB may not find symbols for | |
2074 | the library at all. We also re-validate breakpoints when we | |
2075 | see a second GDB breakpoint for the same address, and or when | |
2076 | we access breakpoint shadows. */ | |
2077 | validate_breakpoints (); | |
2078 | ||
fa593d66 PA |
2079 | if (target_supports_tracepoints ()) |
2080 | tracepoint_look_up_symbols (); | |
2081 | ||
f0db101d | 2082 | if (current_thread != NULL && the_target->look_up_symbols != NULL) |
2f2893d9 DJ |
2083 | (*the_target->look_up_symbols) (); |
2084 | ||
34c65914 PA |
2085 | current_thread = save_thread; |
2086 | ||
ce3a066d DJ |
2087 | strcpy (own_buf, "OK"); |
2088 | return; | |
2089 | } | |
2090 | ||
db42f210 | 2091 | if (!disable_packet_qfThreadInfo) |
0d62e5e8 | 2092 | { |
db42f210 | 2093 | if (strcmp ("qfThreadInfo", own_buf) == 0) |
0d62e5e8 | 2094 | { |
95954743 PA |
2095 | ptid_t gdb_id; |
2096 | ||
db42f210 | 2097 | require_running (own_buf); |
649ebbca | 2098 | thread_ptr = get_first_inferior (&all_threads); |
95954743 PA |
2099 | |
2100 | *own_buf++ = 'm'; | |
2101 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
2102 | write_ptid (own_buf, gdb_id); | |
0d62e5e8 DJ |
2103 | thread_ptr = thread_ptr->next; |
2104 | return; | |
2105 | } | |
db42f210 PA |
2106 | |
2107 | if (strcmp ("qsThreadInfo", own_buf) == 0) | |
0d62e5e8 | 2108 | { |
95954743 PA |
2109 | ptid_t gdb_id; |
2110 | ||
db42f210 PA |
2111 | require_running (own_buf); |
2112 | if (thread_ptr != NULL) | |
2113 | { | |
95954743 PA |
2114 | *own_buf++ = 'm'; |
2115 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
2116 | write_ptid (own_buf, gdb_id); | |
db42f210 PA |
2117 | thread_ptr = thread_ptr->next; |
2118 | return; | |
2119 | } | |
2120 | else | |
2121 | { | |
2122 | sprintf (own_buf, "l"); | |
2123 | return; | |
2124 | } | |
0d62e5e8 DJ |
2125 | } |
2126 | } | |
aa691b87 | 2127 | |
52fb6437 NS |
2128 | if (the_target->read_offsets != NULL |
2129 | && strcmp ("qOffsets", own_buf) == 0) | |
2130 | { | |
2131 | CORE_ADDR text, data; | |
2d717e4f DJ |
2132 | |
2133 | require_running (own_buf); | |
52fb6437 NS |
2134 | if (the_target->read_offsets (&text, &data)) |
2135 | sprintf (own_buf, "Text=%lX;Data=%lX;Bss=%lX", | |
2136 | (long)text, (long)data, (long)data); | |
2137 | else | |
2138 | write_enn (own_buf); | |
1b3f6016 | 2139 | |
52fb6437 NS |
2140 | return; |
2141 | } | |
2142 | ||
be2a5f71 | 2143 | /* Protocol features query. */ |
61012eef | 2144 | if (startswith (own_buf, "qSupported") |
be2a5f71 DJ |
2145 | && (own_buf[10] == ':' || own_buf[10] == '\0')) |
2146 | { | |
95954743 | 2147 | char *p = &own_buf[10]; |
fa593d66 | 2148 | int gdb_supports_qRelocInsn = 0; |
95954743 PA |
2149 | |
2150 | /* Process each feature being provided by GDB. The first | |
2151 | feature will follow a ':', and latter features will follow | |
2152 | ';'. */ | |
2153 | if (*p == ':') | |
d149dd1d PA |
2154 | { |
2155 | char **qsupported = NULL; | |
2156 | int count = 0; | |
06e03fff | 2157 | int unknown = 0; |
d149dd1d PA |
2158 | int i; |
2159 | ||
2160 | /* Two passes, to avoid nested strtok calls in | |
2161 | target_process_qsupported. */ | |
2162 | for (p = strtok (p + 1, ";"); | |
2163 | p != NULL; | |
2164 | p = strtok (NULL, ";")) | |
2165 | { | |
2166 | count++; | |
224c3ddb | 2167 | qsupported = XRESIZEVEC (char *, qsupported, count); |
d149dd1d PA |
2168 | qsupported[count - 1] = xstrdup (p); |
2169 | } | |
2170 | ||
2171 | for (i = 0; i < count; i++) | |
2172 | { | |
2173 | p = qsupported[i]; | |
2174 | if (strcmp (p, "multiprocess+") == 0) | |
2175 | { | |
2176 | /* GDB supports and wants multi-process support if | |
2177 | possible. */ | |
2178 | if (target_supports_multi_process ()) | |
2179 | multi_process = 1; | |
2180 | } | |
fa593d66 PA |
2181 | else if (strcmp (p, "qRelocInsn+") == 0) |
2182 | { | |
2183 | /* GDB supports relocate instruction requests. */ | |
2184 | gdb_supports_qRelocInsn = 1; | |
2185 | } | |
1ec68e26 PA |
2186 | else if (strcmp (p, "swbreak+") == 0) |
2187 | { | |
2188 | /* GDB wants us to report whether a trap is caused | |
2189 | by a software breakpoint and for us to handle PC | |
2190 | adjustment if necessary on this target. */ | |
2191 | if (target_supports_stopped_by_sw_breakpoint ()) | |
2192 | swbreak_feature = 1; | |
2193 | } | |
2194 | else if (strcmp (p, "hwbreak+") == 0) | |
2195 | { | |
2196 | /* GDB wants us to report whether a trap is caused | |
2197 | by a hardware breakpoint. */ | |
2198 | if (target_supports_stopped_by_hw_breakpoint ()) | |
2199 | hwbreak_feature = 1; | |
2200 | } | |
89245bc0 DB |
2201 | else if (strcmp (p, "fork-events+") == 0) |
2202 | { | |
2203 | /* GDB supports and wants fork events if possible. */ | |
2204 | if (target_supports_fork_events ()) | |
2205 | report_fork_events = 1; | |
2206 | } | |
2207 | else if (strcmp (p, "vfork-events+") == 0) | |
2208 | { | |
2209 | /* GDB supports and wants vfork events if possible. */ | |
2210 | if (target_supports_vfork_events ()) | |
2211 | report_vfork_events = 1; | |
2212 | } | |
7c5d0fad | 2213 | else if (strcmp (p, "exec-events+") == 0) |
94585166 DB |
2214 | { |
2215 | /* GDB supports and wants exec events if possible. */ | |
2216 | if (target_supports_exec_events ()) | |
2217 | report_exec_events = 1; | |
2218 | } | |
750ce8d1 YQ |
2219 | else if (strcmp (p, "vContSupported+") == 0) |
2220 | vCont_supported = 1; | |
65706a29 PA |
2221 | else if (strcmp (p, "QThreadEvents+") == 0) |
2222 | ; | |
f2faf941 PA |
2223 | else if (strcmp (p, "no-resumed+") == 0) |
2224 | { | |
2225 | /* GDB supports and wants TARGET_WAITKIND_NO_RESUMED | |
2226 | events. */ | |
2227 | report_no_resumed = 1; | |
2228 | } | |
d149dd1d | 2229 | else |
06e03fff PA |
2230 | { |
2231 | /* Move the unknown features all together. */ | |
2232 | qsupported[i] = NULL; | |
2233 | qsupported[unknown] = p; | |
2234 | unknown++; | |
2235 | } | |
d149dd1d PA |
2236 | } |
2237 | ||
06e03fff PA |
2238 | /* Give the target backend a chance to process the unknown |
2239 | features. */ | |
2240 | target_process_qsupported (qsupported, unknown); | |
2241 | ||
2242 | for (i = 0; i < count; i++) | |
2243 | free (qsupported[i]); | |
d149dd1d PA |
2244 | free (qsupported); |
2245 | } | |
95954743 | 2246 | |
9b224c5e PA |
2247 | sprintf (own_buf, |
2248 | "PacketSize=%x;QPassSignals+;QProgramSignals+", | |
2249 | PBUFSIZ - 1); | |
0876f84a | 2250 | |
82075af2 JS |
2251 | if (target_supports_catch_syscall ()) |
2252 | strcat (own_buf, ";QCatchSyscalls+"); | |
2253 | ||
2268b414 | 2254 | if (the_target->qxfer_libraries_svr4 != NULL) |
b1fbec62 GB |
2255 | strcat (own_buf, ";qXfer:libraries-svr4:read+" |
2256 | ";augmented-libraries-svr4-read+"); | |
2268b414 JK |
2257 | else |
2258 | { | |
2259 | /* We do not have any hook to indicate whether the non-SVR4 target | |
2260 | backend supports qXfer:libraries:read, so always report it. */ | |
2261 | strcat (own_buf, ";qXfer:libraries:read+"); | |
2262 | } | |
255e7678 | 2263 | |
0876f84a | 2264 | if (the_target->read_auxv != NULL) |
9f2e1e63 | 2265 | strcat (own_buf, ";qXfer:auxv:read+"); |
2d717e4f | 2266 | |
0e7f50da UW |
2267 | if (the_target->qxfer_spu != NULL) |
2268 | strcat (own_buf, ";qXfer:spu:read+;qXfer:spu:write+"); | |
0876f84a | 2269 | |
4aa995e1 PA |
2270 | if (the_target->qxfer_siginfo != NULL) |
2271 | strcat (own_buf, ";qXfer:siginfo:read+;qXfer:siginfo:write+"); | |
2272 | ||
78d85199 YQ |
2273 | if (the_target->read_loadmap != NULL) |
2274 | strcat (own_buf, ";qXfer:fdpic:read+"); | |
2275 | ||
221c031f UW |
2276 | /* We always report qXfer:features:read, as targets may |
2277 | install XML files on a subsequent call to arch_setup. | |
2278 | If we reported to GDB on startup that we don't support | |
2279 | qXfer:feature:read at all, we will never be re-queried. */ | |
2280 | strcat (own_buf, ";qXfer:features:read+"); | |
23181151 | 2281 | |
a6f3e723 SL |
2282 | if (transport_is_reliable) |
2283 | strcat (own_buf, ";QStartNoAckMode+"); | |
07e059b5 VP |
2284 | |
2285 | if (the_target->qxfer_osdata != NULL) | |
1b3f6016 | 2286 | strcat (own_buf, ";qXfer:osdata:read+"); |
07e059b5 | 2287 | |
cf8fd78b PA |
2288 | if (target_supports_multi_process ()) |
2289 | strcat (own_buf, ";multiprocess+"); | |
95954743 | 2290 | |
89245bc0 DB |
2291 | if (target_supports_fork_events ()) |
2292 | strcat (own_buf, ";fork-events+"); | |
2293 | ||
2294 | if (target_supports_vfork_events ()) | |
2295 | strcat (own_buf, ";vfork-events+"); | |
2296 | ||
94585166 DB |
2297 | if (target_supports_exec_events ()) |
2298 | strcat (own_buf, ";exec-events+"); | |
2299 | ||
bd99dc85 PA |
2300 | if (target_supports_non_stop ()) |
2301 | strcat (own_buf, ";QNonStop+"); | |
2302 | ||
03583c20 UW |
2303 | if (target_supports_disable_randomization ()) |
2304 | strcat (own_buf, ";QDisableRandomization+"); | |
2305 | ||
dc146f7c VP |
2306 | strcat (own_buf, ";qXfer:threads:read+"); |
2307 | ||
219f2f23 PA |
2308 | if (target_supports_tracepoints ()) |
2309 | { | |
2310 | strcat (own_buf, ";ConditionalTracepoints+"); | |
2311 | strcat (own_buf, ";TraceStateVariables+"); | |
2312 | strcat (own_buf, ";TracepointSource+"); | |
8336d594 | 2313 | strcat (own_buf, ";DisconnectedTracing+"); |
fa593d66 PA |
2314 | if (gdb_supports_qRelocInsn && target_supports_fast_tracepoints ()) |
2315 | strcat (own_buf, ";FastTracepoints+"); | |
0fb4aa4b | 2316 | strcat (own_buf, ";StaticTracepoints+"); |
1e4d1764 | 2317 | strcat (own_buf, ";InstallInTrace+"); |
0fb4aa4b | 2318 | strcat (own_buf, ";qXfer:statictrace:read+"); |
b3b9301e | 2319 | strcat (own_buf, ";qXfer:traceframe-info:read+"); |
d248b706 | 2320 | strcat (own_buf, ";EnableDisableTracepoints+"); |
f6f899bf | 2321 | strcat (own_buf, ";QTBuffer:size+"); |
3065dfb6 | 2322 | strcat (own_buf, ";tracenz+"); |
219f2f23 PA |
2323 | } |
2324 | ||
bd2b2909 AT |
2325 | if (target_supports_hardware_single_step () |
2326 | || target_supports_software_single_step () ) | |
70b90b91 | 2327 | { |
70b90b91 YQ |
2328 | strcat (own_buf, ";ConditionalBreakpoints+"); |
2329 | } | |
d3ce09f5 | 2330 | strcat (own_buf, ";BreakpointCommands+"); |
9f3a5c85 | 2331 | |
d1feda86 YQ |
2332 | if (target_supports_agent ()) |
2333 | strcat (own_buf, ";QAgent+"); | |
2334 | ||
043c3577 | 2335 | supported_btrace_packets (own_buf); |
9accd112 | 2336 | |
1ec68e26 PA |
2337 | if (target_supports_stopped_by_sw_breakpoint ()) |
2338 | strcat (own_buf, ";swbreak+"); | |
2339 | ||
2340 | if (target_supports_stopped_by_hw_breakpoint ()) | |
2341 | strcat (own_buf, ";hwbreak+"); | |
2342 | ||
e57f1de3 GB |
2343 | if (the_target->pid_to_exec_file != NULL) |
2344 | strcat (own_buf, ";qXfer:exec-file:read+"); | |
2345 | ||
750ce8d1 YQ |
2346 | strcat (own_buf, ";vContSupported+"); |
2347 | ||
65706a29 PA |
2348 | strcat (own_buf, ";QThreadEvents+"); |
2349 | ||
f2faf941 PA |
2350 | strcat (own_buf, ";no-resumed+"); |
2351 | ||
14d2069a GB |
2352 | /* Reinitialize components as needed for the new connection. */ |
2353 | hostio_handle_new_gdb_connection (); | |
de0d863e DB |
2354 | target_handle_new_gdb_connection (); |
2355 | ||
be2a5f71 DJ |
2356 | return; |
2357 | } | |
2358 | ||
dae5f5cf DJ |
2359 | /* Thread-local storage support. */ |
2360 | if (the_target->get_tls_address != NULL | |
61012eef | 2361 | && startswith (own_buf, "qGetTLSAddr:")) |
dae5f5cf DJ |
2362 | { |
2363 | char *p = own_buf + 12; | |
5b1c542e | 2364 | CORE_ADDR parts[2], address = 0; |
dae5f5cf | 2365 | int i, err; |
95954743 | 2366 | ptid_t ptid = null_ptid; |
dae5f5cf | 2367 | |
2d717e4f DJ |
2368 | require_running (own_buf); |
2369 | ||
dae5f5cf DJ |
2370 | for (i = 0; i < 3; i++) |
2371 | { | |
2372 | char *p2; | |
2373 | int len; | |
2374 | ||
2375 | if (p == NULL) | |
2376 | break; | |
2377 | ||
2378 | p2 = strchr (p, ','); | |
2379 | if (p2) | |
2380 | { | |
2381 | len = p2 - p; | |
2382 | p2++; | |
2383 | } | |
2384 | else | |
2385 | { | |
2386 | len = strlen (p); | |
2387 | p2 = NULL; | |
2388 | } | |
2389 | ||
5b1c542e | 2390 | if (i == 0) |
95954743 | 2391 | ptid = read_ptid (p, NULL); |
5b1c542e PA |
2392 | else |
2393 | decode_address (&parts[i - 1], p, len); | |
dae5f5cf DJ |
2394 | p = p2; |
2395 | } | |
2396 | ||
2397 | if (p != NULL || i < 3) | |
2398 | err = 1; | |
2399 | else | |
2400 | { | |
e09875d4 | 2401 | struct thread_info *thread = find_thread_ptid (ptid); |
dae5f5cf DJ |
2402 | |
2403 | if (thread == NULL) | |
2404 | err = 2; | |
2405 | else | |
5b1c542e | 2406 | err = the_target->get_tls_address (thread, parts[0], parts[1], |
dae5f5cf DJ |
2407 | &address); |
2408 | } | |
2409 | ||
2410 | if (err == 0) | |
2411 | { | |
c6f46ca0 | 2412 | strcpy (own_buf, paddress(address)); |
dae5f5cf DJ |
2413 | return; |
2414 | } | |
2415 | else if (err > 0) | |
2416 | { | |
2417 | write_enn (own_buf); | |
2418 | return; | |
2419 | } | |
2420 | ||
2421 | /* Otherwise, pretend we do not understand this packet. */ | |
2422 | } | |
2423 | ||
711e434b PM |
2424 | /* Windows OS Thread Information Block address support. */ |
2425 | if (the_target->get_tib_address != NULL | |
61012eef | 2426 | && startswith (own_buf, "qGetTIBAddr:")) |
711e434b PM |
2427 | { |
2428 | char *annex; | |
2429 | int n; | |
2430 | CORE_ADDR tlb; | |
2431 | ptid_t ptid = read_ptid (own_buf + 12, &annex); | |
2432 | ||
2433 | n = (*the_target->get_tib_address) (ptid, &tlb); | |
2434 | if (n == 1) | |
2435 | { | |
c6f46ca0 | 2436 | strcpy (own_buf, paddress(tlb)); |
711e434b PM |
2437 | return; |
2438 | } | |
2439 | else if (n == 0) | |
2440 | { | |
2441 | write_enn (own_buf); | |
2442 | return; | |
2443 | } | |
2444 | return; | |
2445 | } | |
2446 | ||
c74d0ad8 | 2447 | /* Handle "monitor" commands. */ |
61012eef | 2448 | if (startswith (own_buf, "qRcmd,")) |
c74d0ad8 | 2449 | { |
224c3ddb | 2450 | char *mon = (char *) malloc (PBUFSIZ); |
c74d0ad8 DJ |
2451 | int len = strlen (own_buf + 6); |
2452 | ||
aef93bd7 DE |
2453 | if (mon == NULL) |
2454 | { | |
2455 | write_enn (own_buf); | |
2456 | return; | |
2457 | } | |
2458 | ||
ff0e980e TT |
2459 | if ((len % 2) != 0 |
2460 | || hex2bin (own_buf + 6, (gdb_byte *) mon, len / 2) != len / 2) | |
c74d0ad8 DJ |
2461 | { |
2462 | write_enn (own_buf); | |
2463 | free (mon); | |
2464 | return; | |
2465 | } | |
2466 | mon[len / 2] = '\0'; | |
2467 | ||
2468 | write_ok (own_buf); | |
2469 | ||
cdbfd419 PP |
2470 | if (the_target->handle_monitor_command == NULL |
2471 | || (*the_target->handle_monitor_command) (mon) == 0) | |
2472 | /* Default processing. */ | |
d73f2619 | 2473 | handle_monitor_command (mon, own_buf); |
c74d0ad8 DJ |
2474 | |
2475 | free (mon); | |
2476 | return; | |
2477 | } | |
2478 | ||
61012eef | 2479 | if (startswith (own_buf, "qSearch:memory:")) |
08388c79 DE |
2480 | { |
2481 | require_running (own_buf); | |
2482 | handle_search_memory (own_buf, packet_len); | |
2483 | return; | |
2484 | } | |
2485 | ||
95954743 | 2486 | if (strcmp (own_buf, "qAttached") == 0 |
61012eef | 2487 | || startswith (own_buf, "qAttached:")) |
0b16c5cf | 2488 | { |
95954743 PA |
2489 | struct process_info *process; |
2490 | ||
2491 | if (own_buf[sizeof ("qAttached") - 1]) | |
2492 | { | |
2493 | int pid = strtoul (own_buf + sizeof ("qAttached:") - 1, NULL, 16); | |
2494 | process = (struct process_info *) | |
2495 | find_inferior_id (&all_processes, pid_to_ptid (pid)); | |
2496 | } | |
2497 | else | |
2498 | { | |
2499 | require_running (own_buf); | |
2500 | process = current_process (); | |
2501 | } | |
2502 | ||
2503 | if (process == NULL) | |
2504 | { | |
2505 | write_enn (own_buf); | |
2506 | return; | |
2507 | } | |
2508 | ||
2509 | strcpy (own_buf, process->attached ? "1" : "0"); | |
0b16c5cf PA |
2510 | return; |
2511 | } | |
2512 | ||
61012eef | 2513 | if (startswith (own_buf, "qCRC:")) |
30ba68cb MS |
2514 | { |
2515 | /* CRC check (compare-section). */ | |
2516 | char *comma; | |
aca22551 | 2517 | ULONGEST base; |
30ba68cb MS |
2518 | int len; |
2519 | unsigned long long crc; | |
2520 | ||
2521 | require_running (own_buf); | |
aca22551 | 2522 | comma = unpack_varlen_hex (own_buf + 5, &base); |
30ba68cb MS |
2523 | if (*comma++ != ',') |
2524 | { | |
2525 | write_enn (own_buf); | |
2526 | return; | |
2527 | } | |
2528 | len = strtoul (comma, NULL, 16); | |
2529 | crc = crc32 (base, len, 0xffffffff); | |
2530 | /* Check for memory failure. */ | |
2531 | if (crc == (unsigned long long) -1) | |
2532 | { | |
2533 | write_enn (own_buf); | |
2534 | return; | |
2535 | } | |
2536 | sprintf (own_buf, "C%lx", (unsigned long) crc); | |
2537 | return; | |
2538 | } | |
2539 | ||
d08aafef PA |
2540 | if (handle_qxfer (own_buf, packet_len, new_packet_len_p)) |
2541 | return; | |
2542 | ||
219f2f23 PA |
2543 | if (target_supports_tracepoints () && handle_tracepoint_query (own_buf)) |
2544 | return; | |
2545 | ||
ce3a066d DJ |
2546 | /* Otherwise we didn't know what packet it was. Say we didn't |
2547 | understand it. */ | |
2548 | own_buf[0] = 0; | |
2549 | } | |
2550 | ||
ce1a5b52 | 2551 | static void gdb_wants_all_threads_stopped (void); |
b7ea362b PA |
2552 | static void resume (struct thread_resume *actions, size_t n); |
2553 | ||
649ebbca DE |
2554 | /* The callback that is passed to visit_actioned_threads. */ |
2555 | typedef int (visit_actioned_threads_callback_ftype) | |
2556 | (const struct thread_resume *, struct thread_info *); | |
2557 | ||
2558 | /* Struct to pass data to visit_actioned_threads. */ | |
2559 | ||
2560 | struct visit_actioned_threads_data | |
2561 | { | |
2562 | const struct thread_resume *actions; | |
2563 | size_t num_actions; | |
2564 | visit_actioned_threads_callback_ftype *callback; | |
2565 | }; | |
2566 | ||
b7ea362b PA |
2567 | /* Call CALLBACK for any thread to which ACTIONS applies to. Returns |
2568 | true if CALLBACK returns true. Returns false if no matching thread | |
649ebbca DE |
2569 | is found or CALLBACK results false. |
2570 | Note: This function is itself a callback for find_inferior. */ | |
b7ea362b PA |
2571 | |
2572 | static int | |
649ebbca | 2573 | visit_actioned_threads (struct inferior_list_entry *entry, void *datap) |
b7ea362b | 2574 | { |
9a3c8263 SM |
2575 | struct visit_actioned_threads_data *data |
2576 | = (struct visit_actioned_threads_data *) datap; | |
649ebbca DE |
2577 | const struct thread_resume *actions = data->actions; |
2578 | size_t num_actions = data->num_actions; | |
2579 | visit_actioned_threads_callback_ftype *callback = data->callback; | |
2580 | size_t i; | |
b7ea362b | 2581 | |
649ebbca | 2582 | for (i = 0; i < num_actions; i++) |
b7ea362b | 2583 | { |
649ebbca | 2584 | const struct thread_resume *action = &actions[i]; |
b7ea362b | 2585 | |
649ebbca DE |
2586 | if (ptid_equal (action->thread, minus_one_ptid) |
2587 | || ptid_equal (action->thread, entry->id) | |
2588 | || ((ptid_get_pid (action->thread) | |
2589 | == ptid_get_pid (entry->id)) | |
2590 | && ptid_get_lwp (action->thread) == -1)) | |
b7ea362b | 2591 | { |
649ebbca | 2592 | struct thread_info *thread = (struct thread_info *) entry; |
b7ea362b | 2593 | |
649ebbca DE |
2594 | if ((*callback) (action, thread)) |
2595 | return 1; | |
b7ea362b PA |
2596 | } |
2597 | } | |
2598 | ||
2599 | return 0; | |
2600 | } | |
2601 | ||
2602 | /* Callback for visit_actioned_threads. If the thread has a pending | |
2603 | status to report, report it now. */ | |
2604 | ||
2605 | static int | |
2606 | handle_pending_status (const struct thread_resume *resumption, | |
2607 | struct thread_info *thread) | |
2608 | { | |
2609 | if (thread->status_pending_p) | |
2610 | { | |
2611 | thread->status_pending_p = 0; | |
2612 | ||
2613 | last_status = thread->last_status; | |
2614 | last_ptid = thread->entry.id; | |
2615 | prepare_resume_reply (own_buf, last_ptid, &last_status); | |
2616 | return 1; | |
2617 | } | |
2618 | return 0; | |
2619 | } | |
ce1a5b52 | 2620 | |
64386c31 | 2621 | /* Parse vCont packets. */ |
5b3da067 | 2622 | static void |
5b1c542e | 2623 | handle_v_cont (char *own_buf) |
64386c31 DJ |
2624 | { |
2625 | char *p, *q; | |
2626 | int n = 0, i = 0; | |
2bd7c093 | 2627 | struct thread_resume *resume_info; |
95954743 | 2628 | struct thread_resume default_action = {{0}}; |
64386c31 DJ |
2629 | |
2630 | /* Count the number of semicolons in the packet. There should be one | |
2631 | for every action. */ | |
2632 | p = &own_buf[5]; | |
2633 | while (p) | |
2634 | { | |
2635 | n++; | |
2636 | p++; | |
2637 | p = strchr (p, ';'); | |
2638 | } | |
2bd7c093 | 2639 | |
224c3ddb | 2640 | resume_info = (struct thread_resume *) malloc (n * sizeof (resume_info[0])); |
aef93bd7 DE |
2641 | if (resume_info == NULL) |
2642 | goto err; | |
64386c31 | 2643 | |
64386c31 | 2644 | p = &own_buf[5]; |
64386c31 DJ |
2645 | while (*p) |
2646 | { | |
2647 | p++; | |
2648 | ||
c2d6af84 PA |
2649 | memset (&resume_info[i], 0, sizeof resume_info[i]); |
2650 | ||
64386c31 | 2651 | if (p[0] == 's' || p[0] == 'S') |
bd99dc85 | 2652 | resume_info[i].kind = resume_step; |
c2d6af84 PA |
2653 | else if (p[0] == 'r') |
2654 | resume_info[i].kind = resume_step; | |
64386c31 | 2655 | else if (p[0] == 'c' || p[0] == 'C') |
bd99dc85 PA |
2656 | resume_info[i].kind = resume_continue; |
2657 | else if (p[0] == 't') | |
2658 | resume_info[i].kind = resume_stop; | |
64386c31 DJ |
2659 | else |
2660 | goto err; | |
2661 | ||
2662 | if (p[0] == 'S' || p[0] == 'C') | |
2663 | { | |
2664 | int sig; | |
2665 | sig = strtol (p + 1, &q, 16); | |
2666 | if (p == q) | |
2667 | goto err; | |
2668 | p = q; | |
2669 | ||
e053fbc4 | 2670 | if (!gdb_signal_to_host_p ((enum gdb_signal) sig)) |
64386c31 | 2671 | goto err; |
e053fbc4 | 2672 | resume_info[i].sig = gdb_signal_to_host ((enum gdb_signal) sig); |
64386c31 | 2673 | } |
c2d6af84 PA |
2674 | else if (p[0] == 'r') |
2675 | { | |
6740dc9c | 2676 | ULONGEST addr; |
c2d6af84 | 2677 | |
6740dc9c PA |
2678 | p = unpack_varlen_hex (p + 1, &addr); |
2679 | resume_info[i].step_range_start = addr; | |
c2d6af84 | 2680 | |
6740dc9c PA |
2681 | if (*p != ',') |
2682 | goto err; | |
c2d6af84 | 2683 | |
6740dc9c PA |
2684 | p = unpack_varlen_hex (p + 1, &addr); |
2685 | resume_info[i].step_range_end = addr; | |
c2d6af84 | 2686 | } |
64386c31 DJ |
2687 | else |
2688 | { | |
64386c31 DJ |
2689 | p = p + 1; |
2690 | } | |
2691 | ||
2692 | if (p[0] == 0) | |
2693 | { | |
95954743 | 2694 | resume_info[i].thread = minus_one_ptid; |
64386c31 DJ |
2695 | default_action = resume_info[i]; |
2696 | ||
2697 | /* Note: we don't increment i here, we'll overwrite this entry | |
2698 | the next time through. */ | |
2699 | } | |
2700 | else if (p[0] == ':') | |
2701 | { | |
95954743 | 2702 | ptid_t ptid = read_ptid (p + 1, &q); |
a06660f7 | 2703 | |
64386c31 DJ |
2704 | if (p == q) |
2705 | goto err; | |
2706 | p = q; | |
2707 | if (p[0] != ';' && p[0] != 0) | |
2708 | goto err; | |
2709 | ||
95954743 | 2710 | resume_info[i].thread = ptid; |
a06660f7 | 2711 | |
64386c31 DJ |
2712 | i++; |
2713 | } | |
2714 | } | |
2715 | ||
2bd7c093 PA |
2716 | if (i < n) |
2717 | resume_info[i] = default_action; | |
64386c31 | 2718 | |
b7ea362b PA |
2719 | resume (resume_info, n); |
2720 | free (resume_info); | |
2721 | return; | |
2722 | ||
2723 | err: | |
2724 | write_enn (own_buf); | |
2725 | free (resume_info); | |
2726 | return; | |
2727 | } | |
2728 | ||
2729 | /* Resume target with ACTIONS, an array of NUM_ACTIONS elements. */ | |
2730 | ||
2731 | static void | |
2732 | resume (struct thread_resume *actions, size_t num_actions) | |
2733 | { | |
bd99dc85 | 2734 | if (!non_stop) |
b7ea362b PA |
2735 | { |
2736 | /* Check if among the threads that GDB wants actioned, there's | |
2737 | one with a pending status to report. If so, skip actually | |
2738 | resuming/stopping and report the pending event | |
2739 | immediately. */ | |
649ebbca DE |
2740 | struct visit_actioned_threads_data data; |
2741 | ||
2742 | data.actions = actions; | |
2743 | data.num_actions = num_actions; | |
2744 | data.callback = handle_pending_status; | |
2745 | if (find_inferior (&all_threads, visit_actioned_threads, &data) != NULL) | |
b7ea362b | 2746 | return; |
bd99dc85 | 2747 | |
b7ea362b PA |
2748 | enable_async_io (); |
2749 | } | |
64386c31 | 2750 | |
b7ea362b | 2751 | (*the_target->resume) (actions, num_actions); |
64386c31 | 2752 | |
bd99dc85 PA |
2753 | if (non_stop) |
2754 | write_ok (own_buf); | |
2755 | else | |
2756 | { | |
95954743 | 2757 | last_ptid = mywait (minus_one_ptid, &last_status, 0, 1); |
ce1a5b52 | 2758 | |
f2faf941 PA |
2759 | if (last_status.kind == TARGET_WAITKIND_NO_RESUMED |
2760 | && !report_no_resumed) | |
fa96cb38 | 2761 | { |
f2faf941 PA |
2762 | /* The client does not support this stop reply. At least |
2763 | return error. */ | |
fa96cb38 PA |
2764 | sprintf (own_buf, "E.No unwaited-for children left."); |
2765 | disable_async_io (); | |
2766 | return; | |
2767 | } | |
2768 | ||
d20a8ad9 | 2769 | if (last_status.kind != TARGET_WAITKIND_EXITED |
fa96cb38 PA |
2770 | && last_status.kind != TARGET_WAITKIND_SIGNALLED |
2771 | && last_status.kind != TARGET_WAITKIND_NO_RESUMED) | |
0bfdf32f | 2772 | current_thread->last_status = last_status; |
d20a8ad9 | 2773 | |
ce1a5b52 PA |
2774 | /* From the client's perspective, all-stop mode always stops all |
2775 | threads implicitly (and the target backend has already done | |
2776 | so by now). Tag all threads as "want-stopped", so we don't | |
2777 | resume them implicitly without the client telling us to. */ | |
2778 | gdb_wants_all_threads_stopped (); | |
bd99dc85 PA |
2779 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
2780 | disable_async_io (); | |
6bd31874 JB |
2781 | |
2782 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
2783 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2784 | mourn_inferior (find_process_pid (ptid_get_pid (last_ptid))); | |
bd99dc85 | 2785 | } |
64386c31 DJ |
2786 | } |
2787 | ||
2d717e4f | 2788 | /* Attach to a new program. Return 1 if successful, 0 if failure. */ |
5b3da067 | 2789 | static int |
5b1c542e | 2790 | handle_v_attach (char *own_buf) |
2d717e4f DJ |
2791 | { |
2792 | int pid; | |
2793 | ||
2794 | pid = strtol (own_buf + 8, NULL, 16); | |
5b1c542e | 2795 | if (pid != 0 && attach_inferior (pid) == 0) |
2d717e4f | 2796 | { |
aeba519e PA |
2797 | /* Don't report shared library events after attaching, even if |
2798 | some libraries are preloaded. GDB will always poll the | |
2799 | library list. Avoids the "stopped by shared library event" | |
2800 | notice on the GDB side. */ | |
2801 | dlls_changed = 0; | |
bd99dc85 PA |
2802 | |
2803 | if (non_stop) | |
2804 | { | |
2805 | /* In non-stop, we don't send a resume reply. Stop events | |
2806 | will follow up using the normal notification | |
2807 | mechanism. */ | |
2808 | write_ok (own_buf); | |
2809 | } | |
2810 | else | |
2811 | prepare_resume_reply (own_buf, last_ptid, &last_status); | |
2812 | ||
2d717e4f DJ |
2813 | return 1; |
2814 | } | |
2815 | else | |
2816 | { | |
2817 | write_enn (own_buf); | |
2818 | return 0; | |
2819 | } | |
2820 | } | |
2821 | ||
2822 | /* Run a new program. Return 1 if successful, 0 if failure. */ | |
2823 | static int | |
5b1c542e | 2824 | handle_v_run (char *own_buf) |
2d717e4f | 2825 | { |
aef93bd7 | 2826 | char *p, *next_p, **new_argv; |
2d717e4f DJ |
2827 | int i, new_argc; |
2828 | ||
2829 | new_argc = 0; | |
2830 | for (p = own_buf + strlen ("vRun;"); p && *p; p = strchr (p, ';')) | |
2831 | { | |
2832 | p++; | |
2833 | new_argc++; | |
2834 | } | |
2835 | ||
224c3ddb | 2836 | new_argv = (char **) calloc (new_argc + 2, sizeof (char *)); |
aef93bd7 DE |
2837 | if (new_argv == NULL) |
2838 | { | |
2839 | write_enn (own_buf); | |
2840 | return 0; | |
2841 | } | |
2842 | ||
2d717e4f DJ |
2843 | i = 0; |
2844 | for (p = own_buf + strlen ("vRun;"); *p; p = next_p) | |
2845 | { | |
2846 | next_p = strchr (p, ';'); | |
2847 | if (next_p == NULL) | |
2848 | next_p = p + strlen (p); | |
2849 | ||
2850 | if (i == 0 && p == next_p) | |
2851 | new_argv[i] = NULL; | |
2852 | else | |
2853 | { | |
aef93bd7 | 2854 | /* FIXME: Fail request if out of memory instead of dying. */ |
224c3ddb | 2855 | new_argv[i] = (char *) xmalloc (1 + (next_p - p) / 2); |
ff0e980e | 2856 | hex2bin (p, (gdb_byte *) new_argv[i], (next_p - p) / 2); |
2d717e4f DJ |
2857 | new_argv[i][(next_p - p) / 2] = '\0'; |
2858 | } | |
2859 | ||
2860 | if (*next_p) | |
2861 | next_p++; | |
2862 | i++; | |
2863 | } | |
2864 | new_argv[i] = NULL; | |
2865 | ||
2866 | if (new_argv[0] == NULL) | |
2867 | { | |
f142445f DJ |
2868 | /* GDB didn't specify a program to run. Use the program from the |
2869 | last run with the new argument list. */ | |
9b710a42 | 2870 | |
2d717e4f DJ |
2871 | if (program_argv == NULL) |
2872 | { | |
2873 | write_enn (own_buf); | |
b2c04452 | 2874 | freeargv (new_argv); |
2d717e4f DJ |
2875 | return 0; |
2876 | } | |
2877 | ||
aef93bd7 DE |
2878 | new_argv[0] = strdup (program_argv[0]); |
2879 | if (new_argv[0] == NULL) | |
2880 | { | |
aef93bd7 | 2881 | write_enn (own_buf); |
b2c04452 | 2882 | freeargv (new_argv); |
aef93bd7 | 2883 | return 0; |
1b3f6016 | 2884 | } |
2d717e4f | 2885 | } |
f142445f | 2886 | |
aef93bd7 DE |
2887 | /* Free the old argv and install the new one. */ |
2888 | freeargv (program_argv); | |
f142445f | 2889 | program_argv = new_argv; |
2d717e4f | 2890 | |
5b1c542e PA |
2891 | start_inferior (program_argv); |
2892 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
2d717e4f | 2893 | { |
5b1c542e | 2894 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
bd99dc85 PA |
2895 | |
2896 | /* In non-stop, sending a resume reply doesn't set the general | |
2897 | thread, but GDB assumes a vRun sets it (this is so GDB can | |
2898 | query which is the main thread of the new inferior. */ | |
2899 | if (non_stop) | |
2900 | general_thread = last_ptid; | |
2901 | ||
2d717e4f DJ |
2902 | return 1; |
2903 | } | |
2904 | else | |
2905 | { | |
2906 | write_enn (own_buf); | |
2907 | return 0; | |
2908 | } | |
2909 | } | |
2910 | ||
95954743 | 2911 | /* Kill process. Return 1 if successful, 0 if failure. */ |
5b3da067 | 2912 | static int |
95954743 PA |
2913 | handle_v_kill (char *own_buf) |
2914 | { | |
2915 | int pid; | |
2916 | char *p = &own_buf[6]; | |
0f54c268 PM |
2917 | if (multi_process) |
2918 | pid = strtol (p, NULL, 16); | |
2919 | else | |
2920 | pid = signal_pid; | |
95954743 PA |
2921 | if (pid != 0 && kill_inferior (pid) == 0) |
2922 | { | |
2923 | last_status.kind = TARGET_WAITKIND_SIGNALLED; | |
a493e3e2 | 2924 | last_status.value.sig = GDB_SIGNAL_KILL; |
95954743 | 2925 | last_ptid = pid_to_ptid (pid); |
465a859e | 2926 | discard_queued_stop_replies (last_ptid); |
95954743 PA |
2927 | write_ok (own_buf); |
2928 | return 1; | |
2929 | } | |
2930 | else | |
2931 | { | |
2932 | write_enn (own_buf); | |
2933 | return 0; | |
2934 | } | |
2935 | } | |
2936 | ||
64386c31 | 2937 | /* Handle all of the extended 'v' packets. */ |
5b3da067 | 2938 | static void |
5b1c542e | 2939 | handle_v_requests (char *own_buf, int packet_len, int *new_packet_len) |
64386c31 | 2940 | { |
db42f210 | 2941 | if (!disable_packet_vCont) |
64386c31 | 2942 | { |
de979965 PA |
2943 | if (strcmp (own_buf, "vCtrlC") == 0) |
2944 | { | |
2945 | (*the_target->request_interrupt) (); | |
2946 | write_ok (own_buf); | |
2947 | return; | |
2948 | } | |
2949 | ||
61012eef | 2950 | if (startswith (own_buf, "vCont;")) |
db42f210 PA |
2951 | { |
2952 | require_running (own_buf); | |
5b1c542e | 2953 | handle_v_cont (own_buf); |
db42f210 PA |
2954 | return; |
2955 | } | |
64386c31 | 2956 | |
61012eef | 2957 | if (startswith (own_buf, "vCont?")) |
db42f210 | 2958 | { |
750ce8d1 YQ |
2959 | strcpy (own_buf, "vCont;c;C;t"); |
2960 | ||
2961 | if (target_supports_hardware_single_step () || !vCont_supported) | |
2962 | { | |
2963 | /* If target supports hardware single step, add actions s | |
2964 | and S to the list of supported actions. On the other | |
2965 | hand, if GDB doesn't request the supported vCont actions | |
2966 | in qSupported packet, add s and S to the list too. */ | |
2967 | own_buf = own_buf + strlen (own_buf); | |
2968 | strcpy (own_buf, ";s;S"); | |
2969 | } | |
2970 | ||
c2d6af84 PA |
2971 | if (target_supports_range_stepping ()) |
2972 | { | |
2973 | own_buf = own_buf + strlen (own_buf); | |
2974 | strcpy (own_buf, ";r"); | |
2975 | } | |
db42f210 PA |
2976 | return; |
2977 | } | |
64386c31 DJ |
2978 | } |
2979 | ||
61012eef | 2980 | if (startswith (own_buf, "vFile:") |
a6b151f1 DJ |
2981 | && handle_vFile (own_buf, packet_len, new_packet_len)) |
2982 | return; | |
2983 | ||
61012eef | 2984 | if (startswith (own_buf, "vAttach;")) |
2d717e4f | 2985 | { |
901f9912 | 2986 | if ((!extended_protocol || !multi_process) && target_running ()) |
2d717e4f | 2987 | { |
fd96d250 PA |
2988 | fprintf (stderr, "Already debugging a process\n"); |
2989 | write_enn (own_buf); | |
2990 | return; | |
2d717e4f | 2991 | } |
5b1c542e | 2992 | handle_v_attach (own_buf); |
2d717e4f DJ |
2993 | return; |
2994 | } | |
2995 | ||
61012eef | 2996 | if (startswith (own_buf, "vRun;")) |
2d717e4f | 2997 | { |
901f9912 | 2998 | if ((!extended_protocol || !multi_process) && target_running ()) |
2d717e4f | 2999 | { |
fd96d250 PA |
3000 | fprintf (stderr, "Already debugging a process\n"); |
3001 | write_enn (own_buf); | |
3002 | return; | |
2d717e4f | 3003 | } |
5b1c542e | 3004 | handle_v_run (own_buf); |
2d717e4f DJ |
3005 | return; |
3006 | } | |
3007 | ||
61012eef | 3008 | if (startswith (own_buf, "vKill;")) |
95954743 PA |
3009 | { |
3010 | if (!target_running ()) | |
3011 | { | |
3012 | fprintf (stderr, "No process to kill\n"); | |
3013 | write_enn (own_buf); | |
3014 | return; | |
3015 | } | |
3016 | handle_v_kill (own_buf); | |
3017 | return; | |
3018 | } | |
3019 | ||
14a00470 YQ |
3020 | if (handle_notif_ack (own_buf, packet_len)) |
3021 | return; | |
bd99dc85 | 3022 | |
64386c31 DJ |
3023 | /* Otherwise we didn't know what packet it was. Say we didn't |
3024 | understand it. */ | |
3025 | own_buf[0] = 0; | |
3026 | return; | |
3027 | } | |
3028 | ||
0bfdf32f | 3029 | /* Resume thread and wait for another event. In non-stop mode, |
bd99dc85 PA |
3030 | don't really wait here, but return immediatelly to the event |
3031 | loop. */ | |
1fd7cdc2 | 3032 | static void |
5b1c542e | 3033 | myresume (char *own_buf, int step, int sig) |
64386c31 DJ |
3034 | { |
3035 | struct thread_resume resume_info[2]; | |
3036 | int n = 0; | |
2bd7c093 | 3037 | int valid_cont_thread; |
a20d5e98 | 3038 | |
95954743 PA |
3039 | valid_cont_thread = (!ptid_equal (cont_thread, null_ptid) |
3040 | && !ptid_equal (cont_thread, minus_one_ptid)); | |
2bd7c093 PA |
3041 | |
3042 | if (step || sig || valid_cont_thread) | |
64386c31 | 3043 | { |
fbd5db48 | 3044 | resume_info[0].thread = current_ptid; |
bd99dc85 PA |
3045 | if (step) |
3046 | resume_info[0].kind = resume_step; | |
3047 | else | |
3048 | resume_info[0].kind = resume_continue; | |
64386c31 | 3049 | resume_info[0].sig = sig; |
64386c31 DJ |
3050 | n++; |
3051 | } | |
2bd7c093 PA |
3052 | |
3053 | if (!valid_cont_thread) | |
3054 | { | |
95954743 | 3055 | resume_info[n].thread = minus_one_ptid; |
bd99dc85 | 3056 | resume_info[n].kind = resume_continue; |
2bd7c093 PA |
3057 | resume_info[n].sig = 0; |
3058 | n++; | |
3059 | } | |
64386c31 | 3060 | |
b7ea362b | 3061 | resume (resume_info, n); |
bd99dc85 PA |
3062 | } |
3063 | ||
3064 | /* Callback for for_each_inferior. Make a new stop reply for each | |
3065 | stopped thread. */ | |
3066 | ||
95954743 PA |
3067 | static int |
3068 | queue_stop_reply_callback (struct inferior_list_entry *entry, void *arg) | |
bd99dc85 | 3069 | { |
8336d594 | 3070 | struct thread_info *thread = (struct thread_info *) entry; |
bd99dc85 | 3071 | |
8336d594 PA |
3072 | /* For now, assume targets that don't have this callback also don't |
3073 | manage the thread's last_status field. */ | |
3074 | if (the_target->thread_stopped == NULL) | |
95954743 | 3075 | { |
8d749320 | 3076 | struct vstop_notif *new_notif = XNEW (struct vstop_notif); |
14a00470 YQ |
3077 | |
3078 | new_notif->ptid = entry->id; | |
3079 | new_notif->status = thread->last_status; | |
8336d594 PA |
3080 | /* Pass the last stop reply back to GDB, but don't notify |
3081 | yet. */ | |
14a00470 YQ |
3082 | notif_event_enque (¬if_stop, |
3083 | (struct notif_event *) new_notif); | |
8336d594 PA |
3084 | } |
3085 | else | |
3086 | { | |
3087 | if (thread_stopped (thread)) | |
3088 | { | |
3089 | if (debug_threads) | |
3360c0bf LM |
3090 | { |
3091 | char *status_string | |
3092 | = target_waitstatus_to_string (&thread->last_status); | |
3093 | ||
87ce2a04 DE |
3094 | debug_printf ("Reporting thread %s as already stopped with %s\n", |
3095 | target_pid_to_str (entry->id), | |
3096 | status_string); | |
3360c0bf LM |
3097 | |
3098 | xfree (status_string); | |
3099 | } | |
8336d594 | 3100 | |
d20a8ad9 PA |
3101 | gdb_assert (thread->last_status.kind != TARGET_WAITKIND_IGNORE); |
3102 | ||
8336d594 PA |
3103 | /* Pass the last stop reply back to GDB, but don't notify |
3104 | yet. */ | |
3105 | queue_stop_reply (entry->id, &thread->last_status); | |
3106 | } | |
95954743 PA |
3107 | } |
3108 | ||
3109 | return 0; | |
64386c31 DJ |
3110 | } |
3111 | ||
ce1a5b52 PA |
3112 | /* Set this inferior threads's state as "want-stopped". We won't |
3113 | resume this thread until the client gives us another action for | |
3114 | it. */ | |
8336d594 PA |
3115 | |
3116 | static void | |
3117 | gdb_wants_thread_stopped (struct inferior_list_entry *entry) | |
3118 | { | |
3119 | struct thread_info *thread = (struct thread_info *) entry; | |
3120 | ||
3121 | thread->last_resume_kind = resume_stop; | |
3122 | ||
3123 | if (thread->last_status.kind == TARGET_WAITKIND_IGNORE) | |
3124 | { | |
ce1a5b52 PA |
3125 | /* Most threads are stopped implicitly (all-stop); tag that with |
3126 | signal 0. */ | |
8336d594 | 3127 | thread->last_status.kind = TARGET_WAITKIND_STOPPED; |
a493e3e2 | 3128 | thread->last_status.value.sig = GDB_SIGNAL_0; |
8336d594 PA |
3129 | } |
3130 | } | |
3131 | ||
3132 | /* Set all threads' states as "want-stopped". */ | |
3133 | ||
3134 | static void | |
3135 | gdb_wants_all_threads_stopped (void) | |
3136 | { | |
3137 | for_each_inferior (&all_threads, gdb_wants_thread_stopped); | |
3138 | } | |
3139 | ||
3140 | /* Clear the gdb_detached flag of every process. */ | |
3141 | ||
3142 | static void | |
3143 | gdb_reattached_process (struct inferior_list_entry *entry) | |
3144 | { | |
3145 | struct process_info *process = (struct process_info *) entry; | |
3146 | ||
3147 | process->gdb_detached = 0; | |
3148 | } | |
3149 | ||
b7ea362b PA |
3150 | /* Callback for for_each_inferior. Clear the thread's pending status |
3151 | flag. */ | |
3152 | ||
3153 | static void | |
3154 | clear_pending_status_callback (struct inferior_list_entry *entry) | |
3155 | { | |
3156 | struct thread_info *thread = (struct thread_info *) entry; | |
3157 | ||
3158 | thread->status_pending_p = 0; | |
3159 | } | |
3160 | ||
3161 | /* Callback for for_each_inferior. If the thread is stopped with an | |
3162 | interesting event, mark it as having a pending event. */ | |
3163 | ||
3164 | static void | |
3165 | set_pending_status_callback (struct inferior_list_entry *entry) | |
3166 | { | |
3167 | struct thread_info *thread = (struct thread_info *) entry; | |
3168 | ||
3169 | if (thread->last_status.kind != TARGET_WAITKIND_STOPPED | |
3170 | || (thread->last_status.value.sig != GDB_SIGNAL_0 | |
3171 | /* A breakpoint, watchpoint or finished step from a previous | |
3172 | GDB run isn't considered interesting for a new GDB run. | |
3173 | If we left those pending, the new GDB could consider them | |
3174 | random SIGTRAPs. This leaves out real async traps. We'd | |
3175 | have to peek into the (target-specific) siginfo to | |
3176 | distinguish those. */ | |
3177 | && thread->last_status.value.sig != GDB_SIGNAL_TRAP)) | |
3178 | thread->status_pending_p = 1; | |
3179 | } | |
3180 | ||
3181 | /* Callback for find_inferior. Return true if ENTRY (a thread) has a | |
3182 | pending status to report to GDB. */ | |
3183 | ||
3184 | static int | |
3185 | find_status_pending_thread_callback (struct inferior_list_entry *entry, void *data) | |
3186 | { | |
3187 | struct thread_info *thread = (struct thread_info *) entry; | |
3188 | ||
3189 | return thread->status_pending_p; | |
3190 | } | |
3191 | ||
5b1c542e PA |
3192 | /* Status handler for the '?' packet. */ |
3193 | ||
3194 | static void | |
3195 | handle_status (char *own_buf) | |
3196 | { | |
8336d594 PA |
3197 | /* GDB is connected, don't forward events to the target anymore. */ |
3198 | for_each_inferior (&all_processes, gdb_reattached_process); | |
bd99dc85 PA |
3199 | |
3200 | /* In non-stop mode, we must send a stop reply for each stopped | |
3201 | thread. In all-stop mode, just send one for the first stopped | |
3202 | thread we find. */ | |
3203 | ||
3204 | if (non_stop) | |
3205 | { | |
8336d594 | 3206 | find_inferior (&all_threads, queue_stop_reply_callback, NULL); |
bd99dc85 PA |
3207 | |
3208 | /* The first is sent immediatly. OK is sent if there is no | |
3209 | stopped thread, which is the same handling of the vStopped | |
3210 | packet (by design). */ | |
14a00470 | 3211 | notif_write_event (¬if_stop, own_buf); |
bd99dc85 | 3212 | } |
5b1c542e | 3213 | else |
bd99dc85 | 3214 | { |
b7ea362b PA |
3215 | struct inferior_list_entry *thread = NULL; |
3216 | ||
7984d532 | 3217 | pause_all (0); |
fa593d66 | 3218 | stabilize_threads (); |
8336d594 PA |
3219 | gdb_wants_all_threads_stopped (); |
3220 | ||
b7ea362b PA |
3221 | /* We can only report one status, but we might be coming out of |
3222 | non-stop -- if more than one thread is stopped with | |
3223 | interesting events, leave events for the threads we're not | |
3224 | reporting now pending. They'll be reported the next time the | |
3225 | threads are resumed. Start by marking all interesting events | |
3226 | as pending. */ | |
3227 | for_each_inferior (&all_threads, set_pending_status_callback); | |
3228 | ||
3229 | /* Prefer the last thread that reported an event to GDB (even if | |
3230 | that was a GDB_SIGNAL_TRAP). */ | |
3231 | if (last_status.kind != TARGET_WAITKIND_IGNORE | |
3232 | && last_status.kind != TARGET_WAITKIND_EXITED | |
3233 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
3234 | thread = find_inferior_id (&all_threads, last_ptid); | |
3235 | ||
3236 | /* If the last event thread is not found for some reason, look | |
3237 | for some other thread that might have an event to report. */ | |
3238 | if (thread == NULL) | |
3239 | thread = find_inferior (&all_threads, | |
3240 | find_status_pending_thread_callback, NULL); | |
3241 | ||
3242 | /* If we're still out of luck, simply pick the first thread in | |
3243 | the thread list. */ | |
3244 | if (thread == NULL) | |
649ebbca | 3245 | thread = get_first_inferior (&all_threads); |
b7ea362b PA |
3246 | |
3247 | if (thread != NULL) | |
8336d594 | 3248 | { |
b7ea362b PA |
3249 | struct thread_info *tp = (struct thread_info *) thread; |
3250 | ||
3251 | /* We're reporting this event, so it's no longer | |
3252 | pending. */ | |
3253 | tp->status_pending_p = 0; | |
3254 | ||
3255 | /* GDB assumes the current thread is the thread we're | |
3256 | reporting the status for. */ | |
3257 | general_thread = thread->id; | |
0bfdf32f | 3258 | set_desired_thread (1); |
8336d594 | 3259 | |
b7ea362b PA |
3260 | gdb_assert (tp->last_status.kind != TARGET_WAITKIND_IGNORE); |
3261 | prepare_resume_reply (own_buf, tp->entry.id, &tp->last_status); | |
8336d594 | 3262 | } |
bd99dc85 PA |
3263 | else |
3264 | strcpy (own_buf, "W00"); | |
3265 | } | |
5b1c542e PA |
3266 | } |
3267 | ||
dd24457d DJ |
3268 | static void |
3269 | gdbserver_version (void) | |
3270 | { | |
c16158bc | 3271 | printf ("GNU gdbserver %s%s\n" |
edd88788 | 3272 | "Copyright (C) 2016 Free Software Foundation, Inc.\n" |
493e2a69 MS |
3273 | "gdbserver is free software, covered by the " |
3274 | "GNU General Public License.\n" | |
dd24457d | 3275 | "This gdbserver was configured as \"%s\"\n", |
c16158bc | 3276 | PKGVERSION, version, host_name); |
dd24457d DJ |
3277 | } |
3278 | ||
0bc68c49 | 3279 | static void |
c16158bc | 3280 | gdbserver_usage (FILE *stream) |
0bc68c49 | 3281 | { |
c16158bc JM |
3282 | fprintf (stream, "Usage:\tgdbserver [OPTIONS] COMM PROG [ARGS ...]\n" |
3283 | "\tgdbserver [OPTIONS] --attach COMM PID\n" | |
3284 | "\tgdbserver [OPTIONS] --multi COMM\n" | |
3285 | "\n" | |
41f98f02 PA |
3286 | "COMM may either be a tty device (for serial debugging),\n" |
3287 | "HOST:PORT to listen for a TCP connection, or '-' or 'stdio' to use \n" | |
3288 | "stdin/stdout of gdbserver.\n" | |
3289 | "PROG is the executable program. ARGS are arguments passed to inferior.\n" | |
3290 | "PID is the process ID to attach to, when --attach is specified.\n" | |
3291 | "\n" | |
3292 | "Operating modes:\n" | |
3293 | "\n" | |
3294 | " --attach Attach to running process PID.\n" | |
3295 | " --multi Start server without a specific program, and\n" | |
3296 | " only quit when explicitly commanded.\n" | |
3297 | " --once Exit after the first connection has closed.\n" | |
3298 | " --help Print this message and then exit.\n" | |
3299 | " --version Display version information and exit.\n" | |
3300 | "\n" | |
3301 | "Other options:\n" | |
3302 | "\n" | |
3303 | " --wrapper WRAPPER -- Run WRAPPER to start new programs.\n" | |
3304 | " --disable-randomization\n" | |
3305 | " Run PROG with address space randomization disabled.\n" | |
3306 | " --no-disable-randomization\n" | |
3307 | " Don't disable address space randomization when\n" | |
3308 | " starting PROG.\n" | |
3309 | "\n" | |
3310 | "Debug options:\n" | |
c16158bc | 3311 | "\n" |
62709adf | 3312 | " --debug Enable general debugging output.\n" |
87ce2a04 DE |
3313 | " --debug-format=opt1[,opt2,...]\n" |
3314 | " Specify extra content in debugging output.\n" | |
3315 | " Options:\n" | |
3316 | " all\n" | |
3317 | " none\n" | |
87ce2a04 | 3318 | " timestamp\n" |
62709adf | 3319 | " --remote-debug Enable remote protocol debugging output.\n" |
41f98f02 PA |
3320 | " --disable-packet=opt1[,opt2,...]\n" |
3321 | " Disable support for RSP packets or features.\n" | |
3322 | " Options:\n" | |
3323 | " vCont, Tthread, qC, qfThreadInfo and \n" | |
3324 | " threads (disable all threading packets).\n" | |
3325 | "\n" | |
3326 | "For more information, consult the GDB manual (available as on-line \n" | |
3327 | "info or a printed manual).\n"); | |
c16158bc JM |
3328 | if (REPORT_BUGS_TO[0] && stream == stdout) |
3329 | fprintf (stream, "Report bugs to \"%s\".\n", REPORT_BUGS_TO); | |
0bc68c49 DJ |
3330 | } |
3331 | ||
db42f210 PA |
3332 | static void |
3333 | gdbserver_show_disableable (FILE *stream) | |
3334 | { | |
3335 | fprintf (stream, "Disableable packets:\n" | |
3336 | " vCont \tAll vCont packets\n" | |
3337 | " qC \tQuerying the current thread\n" | |
3338 | " qfThreadInfo\tThread listing\n" | |
493e2a69 MS |
3339 | " Tthread \tPassing the thread specifier in the " |
3340 | "T stop reply packet\n" | |
db42f210 PA |
3341 | " threads \tAll of the above\n"); |
3342 | } | |
3343 | ||
3344 | ||
2d717e4f DJ |
3345 | #undef require_running |
3346 | #define require_running(BUF) \ | |
3347 | if (!target_running ()) \ | |
3348 | { \ | |
3349 | write_enn (BUF); \ | |
3350 | break; \ | |
3351 | } | |
3352 | ||
95954743 PA |
3353 | static int |
3354 | first_thread_of (struct inferior_list_entry *entry, void *args) | |
3355 | { | |
3356 | int pid = * (int *) args; | |
3357 | ||
3358 | if (ptid_get_pid (entry->id) == pid) | |
3359 | return 1; | |
3360 | ||
3361 | return 0; | |
3362 | } | |
3363 | ||
3364 | static void | |
3365 | kill_inferior_callback (struct inferior_list_entry *entry) | |
3366 | { | |
3367 | struct process_info *process = (struct process_info *) entry; | |
80894984 | 3368 | int pid = ptid_get_pid (process->entry.id); |
95954743 PA |
3369 | |
3370 | kill_inferior (pid); | |
465a859e | 3371 | discard_queued_stop_replies (pid_to_ptid (pid)); |
95954743 PA |
3372 | } |
3373 | ||
9f767825 DE |
3374 | /* Callback for for_each_inferior to detach or kill the inferior, |
3375 | depending on whether we attached to it or not. | |
3376 | We inform the user whether we're detaching or killing the process | |
3377 | as this is only called when gdbserver is about to exit. */ | |
3378 | ||
95954743 PA |
3379 | static void |
3380 | detach_or_kill_inferior_callback (struct inferior_list_entry *entry) | |
3381 | { | |
3382 | struct process_info *process = (struct process_info *) entry; | |
80894984 | 3383 | int pid = ptid_get_pid (process->entry.id); |
95954743 PA |
3384 | |
3385 | if (process->attached) | |
3386 | detach_inferior (pid); | |
3387 | else | |
3388 | kill_inferior (pid); | |
3389 | ||
465a859e | 3390 | discard_queued_stop_replies (pid_to_ptid (pid)); |
95954743 PA |
3391 | } |
3392 | ||
9f767825 DE |
3393 | /* for_each_inferior callback for detach_or_kill_for_exit to print |
3394 | the pids of started inferiors. */ | |
3395 | ||
3396 | static void | |
3397 | print_started_pid (struct inferior_list_entry *entry) | |
3398 | { | |
3399 | struct process_info *process = (struct process_info *) entry; | |
3400 | ||
3401 | if (! process->attached) | |
3402 | { | |
80894984 | 3403 | int pid = ptid_get_pid (process->entry.id); |
9f767825 DE |
3404 | fprintf (stderr, " %d", pid); |
3405 | } | |
3406 | } | |
3407 | ||
3408 | /* for_each_inferior callback for detach_or_kill_for_exit to print | |
3409 | the pids of attached inferiors. */ | |
3410 | ||
3411 | static void | |
3412 | print_attached_pid (struct inferior_list_entry *entry) | |
3413 | { | |
3414 | struct process_info *process = (struct process_info *) entry; | |
3415 | ||
3416 | if (process->attached) | |
3417 | { | |
80894984 | 3418 | int pid = ptid_get_pid (process->entry.id); |
9f767825 DE |
3419 | fprintf (stderr, " %d", pid); |
3420 | } | |
3421 | } | |
3422 | ||
3423 | /* Call this when exiting gdbserver with possible inferiors that need | |
3424 | to be killed or detached from. */ | |
3425 | ||
3426 | static void | |
3427 | detach_or_kill_for_exit (void) | |
3428 | { | |
3429 | /* First print a list of the inferiors we will be killing/detaching. | |
3430 | This is to assist the user, for example, in case the inferior unexpectedly | |
3431 | dies after we exit: did we screw up or did the inferior exit on its own? | |
3432 | Having this info will save some head-scratching. */ | |
3433 | ||
3434 | if (have_started_inferiors_p ()) | |
3435 | { | |
3436 | fprintf (stderr, "Killing process(es):"); | |
3437 | for_each_inferior (&all_processes, print_started_pid); | |
3438 | fprintf (stderr, "\n"); | |
3439 | } | |
3440 | if (have_attached_inferiors_p ()) | |
3441 | { | |
3442 | fprintf (stderr, "Detaching process(es):"); | |
3443 | for_each_inferior (&all_processes, print_attached_pid); | |
3444 | fprintf (stderr, "\n"); | |
3445 | } | |
3446 | ||
3447 | /* Now we can kill or detach the inferiors. */ | |
3448 | ||
3449 | for_each_inferior (&all_processes, detach_or_kill_inferior_callback); | |
3450 | } | |
3451 | ||
860789c7 GB |
3452 | /* Value that will be passed to exit(3) when gdbserver exits. */ |
3453 | static int exit_code; | |
3454 | ||
3455 | /* Cleanup version of detach_or_kill_for_exit. */ | |
3456 | ||
3457 | static void | |
3458 | detach_or_kill_for_exit_cleanup (void *ignore) | |
3459 | { | |
860789c7 | 3460 | |
492d29ea | 3461 | TRY |
860789c7 GB |
3462 | { |
3463 | detach_or_kill_for_exit (); | |
3464 | } | |
3465 | ||
492d29ea | 3466 | CATCH (exception, RETURN_MASK_ALL) |
860789c7 GB |
3467 | { |
3468 | fflush (stdout); | |
3469 | fprintf (stderr, "Detach or kill failed: %s\n", exception.message); | |
3470 | exit_code = 1; | |
3471 | } | |
492d29ea | 3472 | END_CATCH |
860789c7 GB |
3473 | } |
3474 | ||
3475 | /* Main function. This is called by the real "main" function, | |
3476 | wrapped in a TRY_CATCH that handles any uncaught exceptions. */ | |
3477 | ||
3478 | static void ATTRIBUTE_NORETURN | |
3479 | captured_main (int argc, char *argv[]) | |
c906108c | 3480 | { |
0729219d DJ |
3481 | int bad_attach; |
3482 | int pid; | |
2d717e4f DJ |
3483 | char *arg_end, *port; |
3484 | char **next_arg = &argv[1]; | |
89dc0afd JK |
3485 | volatile int multi_mode = 0; |
3486 | volatile int attach = 0; | |
2d717e4f | 3487 | int was_running; |
c906108c | 3488 | |
2d717e4f | 3489 | while (*next_arg != NULL && **next_arg == '-') |
dd24457d | 3490 | { |
2d717e4f DJ |
3491 | if (strcmp (*next_arg, "--version") == 0) |
3492 | { | |
3493 | gdbserver_version (); | |
3494 | exit (0); | |
3495 | } | |
3496 | else if (strcmp (*next_arg, "--help") == 0) | |
3497 | { | |
c16158bc | 3498 | gdbserver_usage (stdout); |
2d717e4f DJ |
3499 | exit (0); |
3500 | } | |
3501 | else if (strcmp (*next_arg, "--attach") == 0) | |
3502 | attach = 1; | |
3503 | else if (strcmp (*next_arg, "--multi") == 0) | |
3504 | multi_mode = 1; | |
ccd213ac DJ |
3505 | else if (strcmp (*next_arg, "--wrapper") == 0) |
3506 | { | |
3507 | next_arg++; | |
3508 | ||
3509 | wrapper_argv = next_arg; | |
3510 | while (*next_arg != NULL && strcmp (*next_arg, "--") != 0) | |
3511 | next_arg++; | |
3512 | ||
3513 | if (next_arg == wrapper_argv || *next_arg == NULL) | |
3514 | { | |
c16158bc | 3515 | gdbserver_usage (stderr); |
ccd213ac DJ |
3516 | exit (1); |
3517 | } | |
3518 | ||
3519 | /* Consume the "--". */ | |
3520 | *next_arg = NULL; | |
3521 | } | |
2d717e4f DJ |
3522 | else if (strcmp (*next_arg, "--debug") == 0) |
3523 | debug_threads = 1; | |
61012eef | 3524 | else if (startswith (*next_arg, "--debug-format=")) |
87ce2a04 DE |
3525 | { |
3526 | char *error_msg | |
3527 | = parse_debug_format_options ((*next_arg) | |
3528 | + sizeof ("--debug-format=") - 1, 0); | |
3529 | ||
3530 | if (error_msg != NULL) | |
3531 | { | |
3532 | fprintf (stderr, "%s", error_msg); | |
3533 | exit (1); | |
3534 | } | |
3535 | } | |
62709adf PA |
3536 | else if (strcmp (*next_arg, "--remote-debug") == 0) |
3537 | remote_debug = 1; | |
db42f210 PA |
3538 | else if (strcmp (*next_arg, "--disable-packet") == 0) |
3539 | { | |
3540 | gdbserver_show_disableable (stdout); | |
3541 | exit (0); | |
3542 | } | |
61012eef | 3543 | else if (startswith (*next_arg, "--disable-packet=")) |
db42f210 PA |
3544 | { |
3545 | char *packets, *tok; | |
3546 | ||
3547 | packets = *next_arg += sizeof ("--disable-packet=") - 1; | |
3548 | for (tok = strtok (packets, ","); | |
3549 | tok != NULL; | |
3550 | tok = strtok (NULL, ",")) | |
3551 | { | |
3552 | if (strcmp ("vCont", tok) == 0) | |
3553 | disable_packet_vCont = 1; | |
3554 | else if (strcmp ("Tthread", tok) == 0) | |
3555 | disable_packet_Tthread = 1; | |
3556 | else if (strcmp ("qC", tok) == 0) | |
3557 | disable_packet_qC = 1; | |
3558 | else if (strcmp ("qfThreadInfo", tok) == 0) | |
3559 | disable_packet_qfThreadInfo = 1; | |
3560 | else if (strcmp ("threads", tok) == 0) | |
3561 | { | |
3562 | disable_packet_vCont = 1; | |
3563 | disable_packet_Tthread = 1; | |
3564 | disable_packet_qC = 1; | |
3565 | disable_packet_qfThreadInfo = 1; | |
3566 | } | |
3567 | else | |
3568 | { | |
3569 | fprintf (stderr, "Don't know how to disable \"%s\".\n\n", | |
3570 | tok); | |
3571 | gdbserver_show_disableable (stderr); | |
3572 | exit (1); | |
3573 | } | |
3574 | } | |
3575 | } | |
e0f9f062 DE |
3576 | else if (strcmp (*next_arg, "-") == 0) |
3577 | { | |
3578 | /* "-" specifies a stdio connection and is a form of port | |
3579 | specification. */ | |
3580 | *next_arg = STDIO_CONNECTION_NAME; | |
3581 | break; | |
3582 | } | |
03583c20 UW |
3583 | else if (strcmp (*next_arg, "--disable-randomization") == 0) |
3584 | disable_randomization = 1; | |
3585 | else if (strcmp (*next_arg, "--no-disable-randomization") == 0) | |
3586 | disable_randomization = 0; | |
03f2bd59 JK |
3587 | else if (strcmp (*next_arg, "--once") == 0) |
3588 | run_once = 1; | |
2d717e4f DJ |
3589 | else |
3590 | { | |
3591 | fprintf (stderr, "Unknown argument: %s\n", *next_arg); | |
3592 | exit (1); | |
3593 | } | |
dd24457d | 3594 | |
2d717e4f DJ |
3595 | next_arg++; |
3596 | continue; | |
dd24457d DJ |
3597 | } |
3598 | ||
2d717e4f DJ |
3599 | port = *next_arg; |
3600 | next_arg++; | |
3601 | if (port == NULL || (!attach && !multi_mode && *next_arg == NULL)) | |
3602 | { | |
c16158bc | 3603 | gdbserver_usage (stderr); |
2d717e4f DJ |
3604 | exit (1); |
3605 | } | |
3606 | ||
602e3198 JK |
3607 | /* Remember stdio descriptors. LISTEN_DESC must not be listed, it will be |
3608 | opened by remote_prepare. */ | |
3609 | notice_open_fds (); | |
3610 | ||
e0f9f062 DE |
3611 | /* We need to know whether the remote connection is stdio before |
3612 | starting the inferior. Inferiors created in this scenario have | |
3613 | stdin,stdout redirected. So do this here before we call | |
3614 | start_inferior. */ | |
3615 | remote_prepare (port); | |
3616 | ||
0729219d DJ |
3617 | bad_attach = 0; |
3618 | pid = 0; | |
2d717e4f DJ |
3619 | |
3620 | /* --attach used to come after PORT, so allow it there for | |
3621 | compatibility. */ | |
3622 | if (*next_arg != NULL && strcmp (*next_arg, "--attach") == 0) | |
45b7b345 | 3623 | { |
2d717e4f DJ |
3624 | attach = 1; |
3625 | next_arg++; | |
45b7b345 DJ |
3626 | } |
3627 | ||
2d717e4f DJ |
3628 | if (attach |
3629 | && (*next_arg == NULL | |
3630 | || (*next_arg)[0] == '\0' | |
3631 | || (pid = strtoul (*next_arg, &arg_end, 0)) == 0 | |
3632 | || *arg_end != '\0' | |
3633 | || next_arg[1] != NULL)) | |
3634 | bad_attach = 1; | |
3635 | ||
3636 | if (bad_attach) | |
dd24457d | 3637 | { |
c16158bc | 3638 | gdbserver_usage (stderr); |
dd24457d DJ |
3639 | exit (1); |
3640 | } | |
c906108c | 3641 | |
a20d5e98 | 3642 | initialize_async_io (); |
4ce44c66 | 3643 | initialize_low (); |
60f662b0 | 3644 | initialize_event_loop (); |
219f2f23 PA |
3645 | if (target_supports_tracepoints ()) |
3646 | initialize_tracepoint (); | |
465a859e | 3647 | initialize_notif (); |
4ce44c66 | 3648 | |
224c3ddb SM |
3649 | own_buf = (char *) xmalloc (PBUFSIZ + 1); |
3650 | mem_buf = (unsigned char *) xmalloc (PBUFSIZ); | |
0a30fbc4 | 3651 | |
2d717e4f | 3652 | if (pid == 0 && *next_arg != NULL) |
45b7b345 | 3653 | { |
2d717e4f DJ |
3654 | int i, n; |
3655 | ||
3656 | n = argc - (next_arg - argv); | |
224c3ddb | 3657 | program_argv = XNEWVEC (char *, n + 1); |
2d717e4f | 3658 | for (i = 0; i < n; i++) |
bca929d3 | 3659 | program_argv[i] = xstrdup (next_arg[i]); |
2d717e4f DJ |
3660 | program_argv[i] = NULL; |
3661 | ||
45b7b345 | 3662 | /* Wait till we are at first instruction in program. */ |
5b1c542e | 3663 | start_inferior (program_argv); |
c906108c | 3664 | |
c588c53c MS |
3665 | /* We are now (hopefully) stopped at the first instruction of |
3666 | the target process. This assumes that the target process was | |
3667 | successfully created. */ | |
45b7b345 | 3668 | } |
2d717e4f DJ |
3669 | else if (pid != 0) |
3670 | { | |
5b1c542e | 3671 | if (attach_inferior (pid) == -1) |
2d717e4f DJ |
3672 | error ("Attaching not supported on this target"); |
3673 | ||
3674 | /* Otherwise succeeded. */ | |
3675 | } | |
45b7b345 DJ |
3676 | else |
3677 | { | |
5b1c542e PA |
3678 | last_status.kind = TARGET_WAITKIND_EXITED; |
3679 | last_status.value.integer = 0; | |
95954743 | 3680 | last_ptid = minus_one_ptid; |
45b7b345 | 3681 | } |
860789c7 | 3682 | make_cleanup (detach_or_kill_for_exit_cleanup, NULL); |
c906108c | 3683 | |
311de423 PA |
3684 | /* Don't report shared library events on the initial connection, |
3685 | even if some libraries are preloaded. Avoids the "stopped by | |
3686 | shared library event" notice on gdb side. */ | |
3687 | dlls_changed = 0; | |
3688 | ||
5b1c542e PA |
3689 | if (last_status.kind == TARGET_WAITKIND_EXITED |
3690 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2d717e4f DJ |
3691 | was_running = 0; |
3692 | else | |
3693 | was_running = 1; | |
3694 | ||
3695 | if (!was_running && !multi_mode) | |
860789c7 | 3696 | error ("No program to debug"); |
c588c53c | 3697 | |
c906108c SS |
3698 | while (1) |
3699 | { | |
860789c7 | 3700 | |
a6f3e723 | 3701 | noack_mode = 0; |
95954743 | 3702 | multi_process = 0; |
89245bc0 DB |
3703 | report_fork_events = 0; |
3704 | report_vfork_events = 0; | |
94585166 | 3705 | report_exec_events = 0; |
8336d594 PA |
3706 | /* Be sure we're out of tfind mode. */ |
3707 | current_traceframe = -1; | |
40e91bc7 | 3708 | cont_thread = null_ptid; |
1ec68e26 PA |
3709 | swbreak_feature = 0; |
3710 | hwbreak_feature = 0; | |
750ce8d1 | 3711 | vCont_supported = 0; |
bd99dc85 | 3712 | |
2d717e4f | 3713 | remote_open (port); |
c906108c | 3714 | |
492d29ea | 3715 | TRY |
2d717e4f | 3716 | { |
860789c7 GB |
3717 | /* Wait for events. This will return when all event sources |
3718 | are removed from the event loop. */ | |
3719 | start_event_loop (); | |
2d717e4f | 3720 | |
860789c7 | 3721 | /* If an exit was requested (using the "monitor exit" |
fddedbe6 PA |
3722 | command), terminate now. */ |
3723 | if (exit_requested) | |
3724 | throw_quit ("Quit"); | |
3725 | ||
3726 | /* The only other way to get here is for getpkt to fail: | |
3727 | ||
3728 | - If --once was specified, we're done. | |
bd99dc85 | 3729 | |
fddedbe6 PA |
3730 | - If not in extended-remote mode, and we're no longer |
3731 | debugging anything, simply exit: GDB has disconnected | |
3732 | after processing the last process exit. | |
3733 | ||
3734 | - Otherwise, close the connection and reopen it at the | |
3735 | top of the loop. */ | |
3736 | if (run_once || (!extended_protocol && !target_running ())) | |
860789c7 | 3737 | throw_quit ("Quit"); |
bd99dc85 | 3738 | |
860789c7 GB |
3739 | fprintf (stderr, |
3740 | "Remote side has terminated connection. " | |
3741 | "GDBserver will reopen the connection.\n"); | |
8336d594 | 3742 | |
860789c7 GB |
3743 | /* Get rid of any pending statuses. An eventual reconnection |
3744 | (by the same GDB instance or another) will refresh all its | |
3745 | state from scratch. */ | |
465a859e | 3746 | discard_queued_stop_replies (minus_one_ptid); |
860789c7 GB |
3747 | for_each_inferior (&all_threads, |
3748 | clear_pending_status_callback); | |
9939e131 | 3749 | |
860789c7 | 3750 | if (tracing) |
8336d594 | 3751 | { |
860789c7 | 3752 | if (disconnected_tracing) |
8336d594 | 3753 | { |
860789c7 GB |
3754 | /* Try to enable non-stop/async mode, so we we can |
3755 | both wait for an async socket accept, and handle | |
3756 | async target events simultaneously. There's also | |
3757 | no point either in having the target always stop | |
3758 | all threads, when we're going to pass signals | |
3759 | down without informing GDB. */ | |
3760 | if (!non_stop) | |
3761 | { | |
3762 | if (start_non_stop (1)) | |
3763 | non_stop = 1; | |
3764 | ||
3765 | /* Detaching implicitly resumes all threads; | |
3766 | simply disconnecting does not. */ | |
3767 | } | |
3768 | } | |
3769 | else | |
3770 | { | |
3771 | fprintf (stderr, | |
3772 | "Disconnected tracing disabled; " | |
3773 | "stopping trace run.\n"); | |
3774 | stop_tracing (); | |
8336d594 PA |
3775 | } |
3776 | } | |
860789c7 | 3777 | } |
492d29ea | 3778 | CATCH (exception, RETURN_MASK_ERROR) |
860789c7 | 3779 | { |
608a1e46 PA |
3780 | fflush (stdout); |
3781 | fprintf (stderr, "gdbserver: %s\n", exception.message); | |
3782 | ||
860789c7 | 3783 | if (response_needed) |
8336d594 | 3784 | { |
860789c7 GB |
3785 | write_enn (own_buf); |
3786 | putpkt (own_buf); | |
8336d594 | 3787 | } |
608a1e46 PA |
3788 | |
3789 | if (run_once) | |
3790 | throw_quit ("Quit"); | |
8336d594 | 3791 | } |
492d29ea | 3792 | END_CATCH |
bd99dc85 PA |
3793 | } |
3794 | } | |
01f9e8fa | 3795 | |
860789c7 GB |
3796 | /* Main function. */ |
3797 | ||
3798 | int | |
3799 | main (int argc, char *argv[]) | |
3800 | { | |
860789c7 | 3801 | |
492d29ea | 3802 | TRY |
860789c7 GB |
3803 | { |
3804 | captured_main (argc, argv); | |
3805 | } | |
492d29ea | 3806 | CATCH (exception, RETURN_MASK_ALL) |
860789c7 | 3807 | { |
492d29ea PA |
3808 | if (exception.reason == RETURN_ERROR) |
3809 | { | |
3810 | fflush (stdout); | |
3811 | fprintf (stderr, "%s\n", exception.message); | |
3812 | fprintf (stderr, "Exiting\n"); | |
3813 | exit_code = 1; | |
3814 | } | |
3815 | ||
3816 | exit (exit_code); | |
860789c7 | 3817 | } |
492d29ea | 3818 | END_CATCH |
860789c7 | 3819 | |
492d29ea | 3820 | gdb_assert_not_reached ("captured_main should never return"); |
860789c7 GB |
3821 | } |
3822 | ||
802e8e6d PA |
3823 | /* Process options coming from Z packets for a breakpoint. PACKET is |
3824 | the packet buffer. *PACKET is updated to point to the first char | |
3825 | after the last processed option. */ | |
9f3a5c85 LM |
3826 | |
3827 | static void | |
802e8e6d | 3828 | process_point_options (struct breakpoint *bp, char **packet) |
9f3a5c85 LM |
3829 | { |
3830 | char *dataptr = *packet; | |
d3ce09f5 | 3831 | int persist; |
9f3a5c85 LM |
3832 | |
3833 | /* Check if data has the correct format. */ | |
3834 | if (*dataptr != ';') | |
3835 | return; | |
3836 | ||
3837 | dataptr++; | |
3838 | ||
3839 | while (*dataptr) | |
3840 | { | |
d3ce09f5 SS |
3841 | if (*dataptr == ';') |
3842 | ++dataptr; | |
3843 | ||
3844 | if (*dataptr == 'X') | |
9f3a5c85 | 3845 | { |
d3ce09f5 | 3846 | /* Conditional expression. */ |
d171ca78 | 3847 | if (debug_threads) |
87ce2a04 | 3848 | debug_printf ("Found breakpoint condition.\n"); |
802e8e6d | 3849 | if (!add_breakpoint_condition (bp, &dataptr)) |
8424cc97 | 3850 | dataptr = strchrnul (dataptr, ';'); |
d3ce09f5 | 3851 | } |
61012eef | 3852 | else if (startswith (dataptr, "cmds:")) |
d3ce09f5 SS |
3853 | { |
3854 | dataptr += strlen ("cmds:"); | |
3855 | if (debug_threads) | |
87ce2a04 | 3856 | debug_printf ("Found breakpoint commands %s.\n", dataptr); |
d3ce09f5 SS |
3857 | persist = (*dataptr == '1'); |
3858 | dataptr += 2; | |
802e8e6d | 3859 | if (add_breakpoint_commands (bp, &dataptr, persist)) |
8424cc97 | 3860 | dataptr = strchrnul (dataptr, ';'); |
d3ce09f5 SS |
3861 | } |
3862 | else | |
3863 | { | |
d3ce09f5 SS |
3864 | fprintf (stderr, "Unknown token %c, ignoring.\n", |
3865 | *dataptr); | |
78a99e91 | 3866 | /* Skip tokens until we find one that we recognize. */ |
8424cc97 | 3867 | dataptr = strchrnul (dataptr, ';'); |
9f3a5c85 | 3868 | } |
9f3a5c85 LM |
3869 | } |
3870 | *packet = dataptr; | |
3871 | } | |
3872 | ||
bd99dc85 PA |
3873 | /* Event loop callback that handles a serial event. The first byte in |
3874 | the serial buffer gets us here. We expect characters to arrive at | |
3875 | a brisk pace, so we read the rest of the packet with a blocking | |
3876 | getpkt call. */ | |
01f9e8fa | 3877 | |
8336d594 | 3878 | static int |
bd99dc85 PA |
3879 | process_serial_event (void) |
3880 | { | |
3881 | char ch; | |
3882 | int i = 0; | |
3883 | int signal; | |
3884 | unsigned int len; | |
764880b7 | 3885 | int res; |
bd99dc85 | 3886 | CORE_ADDR mem_addr; |
95954743 | 3887 | int pid; |
bd99dc85 PA |
3888 | unsigned char sig; |
3889 | int packet_len; | |
3890 | int new_packet_len = -1; | |
3891 | ||
bd99dc85 PA |
3892 | disable_async_io (); |
3893 | ||
3894 | response_needed = 0; | |
3895 | packet_len = getpkt (own_buf); | |
3896 | if (packet_len <= 0) | |
3897 | { | |
bd99dc85 | 3898 | remote_close (); |
8336d594 PA |
3899 | /* Force an event loop break. */ |
3900 | return -1; | |
bd99dc85 PA |
3901 | } |
3902 | response_needed = 1; | |
3903 | ||
3904 | i = 0; | |
3905 | ch = own_buf[i++]; | |
3906 | switch (ch) | |
3907 | { | |
3908 | case 'q': | |
3909 | handle_query (own_buf, packet_len, &new_packet_len); | |
3910 | break; | |
3911 | case 'Q': | |
3912 | handle_general_set (own_buf); | |
3913 | break; | |
3914 | case 'D': | |
3915 | require_running (own_buf); | |
95954743 PA |
3916 | |
3917 | if (multi_process) | |
3918 | { | |
3919 | i++; /* skip ';' */ | |
3920 | pid = strtol (&own_buf[i], NULL, 16); | |
3921 | } | |
3922 | else | |
fbd5db48 | 3923 | pid = ptid_get_pid (current_ptid); |
95954743 | 3924 | |
d3ce09f5 | 3925 | if ((tracing && disconnected_tracing) || any_persistent_commands ()) |
8336d594 PA |
3926 | { |
3927 | struct thread_resume resume_info; | |
3928 | struct process_info *process = find_process_pid (pid); | |
3929 | ||
3930 | if (process == NULL) | |
3931 | { | |
3932 | write_enn (own_buf); | |
3933 | break; | |
3934 | } | |
3935 | ||
d3ce09f5 SS |
3936 | if (tracing && disconnected_tracing) |
3937 | fprintf (stderr, | |
3938 | "Disconnected tracing in effect, " | |
3939 | "leaving gdbserver attached to the process\n"); | |
3940 | ||
3941 | if (any_persistent_commands ()) | |
3942 | fprintf (stderr, | |
3943 | "Persistent commands are present, " | |
3944 | "leaving gdbserver attached to the process\n"); | |
8336d594 PA |
3945 | |
3946 | /* Make sure we're in non-stop/async mode, so we we can both | |
3947 | wait for an async socket accept, and handle async target | |
3948 | events simultaneously. There's also no point either in | |
3949 | having the target stop all threads, when we're going to | |
3950 | pass signals down without informing GDB. */ | |
3951 | if (!non_stop) | |
3952 | { | |
3953 | if (debug_threads) | |
87ce2a04 | 3954 | debug_printf ("Forcing non-stop mode\n"); |
8336d594 PA |
3955 | |
3956 | non_stop = 1; | |
3957 | start_non_stop (1); | |
3958 | } | |
3959 | ||
3960 | process->gdb_detached = 1; | |
3961 | ||
3962 | /* Detaching implicitly resumes all threads. */ | |
3963 | resume_info.thread = minus_one_ptid; | |
3964 | resume_info.kind = resume_continue; | |
3965 | resume_info.sig = 0; | |
3966 | (*the_target->resume) (&resume_info, 1); | |
3967 | ||
3968 | write_ok (own_buf); | |
3969 | break; /* from switch/case */ | |
3970 | } | |
3971 | ||
95954743 | 3972 | fprintf (stderr, "Detaching from process %d\n", pid); |
8336d594 | 3973 | stop_tracing (); |
95954743 | 3974 | if (detach_inferior (pid) != 0) |
bd99dc85 PA |
3975 | write_enn (own_buf); |
3976 | else | |
3977 | { | |
465a859e | 3978 | discard_queued_stop_replies (pid_to_ptid (pid)); |
bd99dc85 PA |
3979 | write_ok (own_buf); |
3980 | ||
8020350c | 3981 | if (extended_protocol || target_running ()) |
c906108c | 3982 | { |
8020350c DB |
3983 | /* There is still at least one inferior remaining or |
3984 | we are in extended mode, so don't terminate gdbserver, | |
3985 | and instead treat this like a normal program exit. */ | |
bd99dc85 PA |
3986 | last_status.kind = TARGET_WAITKIND_EXITED; |
3987 | last_status.value.integer = 0; | |
95954743 | 3988 | last_ptid = pid_to_ptid (pid); |
2d717e4f | 3989 | |
0bfdf32f | 3990 | current_thread = NULL; |
bd99dc85 PA |
3991 | } |
3992 | else | |
3993 | { | |
3994 | putpkt (own_buf); | |
3995 | remote_close (); | |
3996 | ||
3997 | /* If we are attached, then we can exit. Otherwise, we | |
3998 | need to hang around doing nothing, until the child is | |
3999 | gone. */ | |
71f55dd8 | 4000 | join_inferior (pid); |
bd99dc85 PA |
4001 | exit (0); |
4002 | } | |
4003 | } | |
4004 | break; | |
4005 | case '!': | |
4006 | extended_protocol = 1; | |
4007 | write_ok (own_buf); | |
4008 | break; | |
4009 | case '?': | |
4010 | handle_status (own_buf); | |
4011 | break; | |
4012 | case 'H': | |
4013 | if (own_buf[1] == 'c' || own_buf[1] == 'g' || own_buf[1] == 's') | |
4014 | { | |
95954743 PA |
4015 | ptid_t gdb_id, thread_id; |
4016 | int pid; | |
bd99dc85 PA |
4017 | |
4018 | require_running (own_buf); | |
95954743 PA |
4019 | |
4020 | gdb_id = read_ptid (&own_buf[2], NULL); | |
4021 | ||
4022 | pid = ptid_get_pid (gdb_id); | |
4023 | ||
4024 | if (ptid_equal (gdb_id, null_ptid) | |
4025 | || ptid_equal (gdb_id, minus_one_ptid)) | |
4026 | thread_id = null_ptid; | |
4027 | else if (pid != 0 | |
4028 | && ptid_equal (pid_to_ptid (pid), | |
4029 | gdb_id)) | |
4030 | { | |
4031 | struct thread_info *thread = | |
4032 | (struct thread_info *) find_inferior (&all_threads, | |
4033 | first_thread_of, | |
4034 | &pid); | |
4035 | if (!thread) | |
4036 | { | |
4037 | write_enn (own_buf); | |
4038 | break; | |
4039 | } | |
4040 | ||
80894984 | 4041 | thread_id = thread->entry.id; |
95954743 | 4042 | } |
bd99dc85 PA |
4043 | else |
4044 | { | |
4045 | thread_id = gdb_id_to_thread_id (gdb_id); | |
95954743 | 4046 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 4047 | { |
a06660f7 | 4048 | write_enn (own_buf); |
c906108c SS |
4049 | break; |
4050 | } | |
c906108c SS |
4051 | } |
4052 | ||
bd99dc85 | 4053 | if (own_buf[1] == 'g') |
c906108c | 4054 | { |
95954743 | 4055 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 4056 | { |
bd99dc85 PA |
4057 | /* GDB is telling us to choose any thread. Check if |
4058 | the currently selected thread is still valid. If | |
4059 | it is not, select the first available. */ | |
4060 | struct thread_info *thread = | |
4061 | (struct thread_info *) find_inferior_id (&all_threads, | |
4062 | general_thread); | |
4063 | if (thread == NULL) | |
f0db101d PA |
4064 | thread = get_first_thread (); |
4065 | thread_id = thread->entry.id; | |
c906108c | 4066 | } |
bd99dc85 PA |
4067 | |
4068 | general_thread = thread_id; | |
0bfdf32f | 4069 | set_desired_thread (1); |
f0db101d | 4070 | gdb_assert (current_thread != NULL); |
c906108c | 4071 | } |
bd99dc85 PA |
4072 | else if (own_buf[1] == 'c') |
4073 | cont_thread = thread_id; | |
c906108c | 4074 | |
bd99dc85 PA |
4075 | write_ok (own_buf); |
4076 | } | |
4077 | else | |
4078 | { | |
4079 | /* Silently ignore it so that gdb can extend the protocol | |
4080 | without compatibility headaches. */ | |
4081 | own_buf[0] = '\0'; | |
2d717e4f | 4082 | } |
bd99dc85 PA |
4083 | break; |
4084 | case 'g': | |
219f2f23 PA |
4085 | require_running (own_buf); |
4086 | if (current_traceframe >= 0) | |
4087 | { | |
3aee8918 PA |
4088 | struct regcache *regcache |
4089 | = new_register_cache (current_target_desc ()); | |
219f2f23 PA |
4090 | |
4091 | if (fetch_traceframe_registers (current_traceframe, | |
4092 | regcache, -1) == 0) | |
4093 | registers_to_string (regcache, own_buf); | |
4094 | else | |
4095 | write_enn (own_buf); | |
4096 | free_register_cache (regcache); | |
4097 | } | |
4098 | else | |
4099 | { | |
4100 | struct regcache *regcache; | |
4101 | ||
f0db101d PA |
4102 | if (!set_desired_thread (1)) |
4103 | write_enn (own_buf); | |
4104 | else | |
4105 | { | |
4106 | regcache = get_thread_regcache (current_thread, 1); | |
4107 | registers_to_string (regcache, own_buf); | |
4108 | } | |
219f2f23 | 4109 | } |
bd99dc85 PA |
4110 | break; |
4111 | case 'G': | |
219f2f23 PA |
4112 | require_running (own_buf); |
4113 | if (current_traceframe >= 0) | |
4114 | write_enn (own_buf); | |
4115 | else | |
4116 | { | |
442ea881 PA |
4117 | struct regcache *regcache; |
4118 | ||
f0db101d PA |
4119 | if (!set_desired_thread (1)) |
4120 | write_enn (own_buf); | |
4121 | else | |
4122 | { | |
4123 | regcache = get_thread_regcache (current_thread, 1); | |
4124 | registers_from_string (regcache, &own_buf[1]); | |
4125 | write_ok (own_buf); | |
4126 | } | |
442ea881 | 4127 | } |
bd99dc85 PA |
4128 | break; |
4129 | case 'm': | |
4130 | require_running (own_buf); | |
4131 | decode_m_packet (&own_buf[1], &mem_addr, &len); | |
764880b7 PA |
4132 | res = gdb_read_memory (mem_addr, mem_buf, len); |
4133 | if (res < 0) | |
bd99dc85 | 4134 | write_enn (own_buf); |
764880b7 | 4135 | else |
e9371aff | 4136 | bin2hex (mem_buf, own_buf, res); |
bd99dc85 PA |
4137 | break; |
4138 | case 'M': | |
4139 | require_running (own_buf); | |
fa593d66 | 4140 | decode_M_packet (&own_buf[1], &mem_addr, &len, &mem_buf); |
90d74c30 | 4141 | if (gdb_write_memory (mem_addr, mem_buf, len) == 0) |
bd99dc85 PA |
4142 | write_ok (own_buf); |
4143 | else | |
4144 | write_enn (own_buf); | |
4145 | break; | |
4146 | case 'X': | |
4147 | require_running (own_buf); | |
4148 | if (decode_X_packet (&own_buf[1], packet_len - 1, | |
fa593d66 | 4149 | &mem_addr, &len, &mem_buf) < 0 |
90d74c30 | 4150 | || gdb_write_memory (mem_addr, mem_buf, len) != 0) |
bd99dc85 PA |
4151 | write_enn (own_buf); |
4152 | else | |
4153 | write_ok (own_buf); | |
4154 | break; | |
4155 | case 'C': | |
4156 | require_running (own_buf); | |
a7191e8b | 4157 | hex2bin (own_buf + 1, &sig, 1); |
e053fbc4 PA |
4158 | if (gdb_signal_to_host_p ((enum gdb_signal) sig)) |
4159 | signal = gdb_signal_to_host ((enum gdb_signal) sig); | |
bd99dc85 PA |
4160 | else |
4161 | signal = 0; | |
4162 | myresume (own_buf, 0, signal); | |
4163 | break; | |
4164 | case 'S': | |
4165 | require_running (own_buf); | |
a7191e8b | 4166 | hex2bin (own_buf + 1, &sig, 1); |
e053fbc4 PA |
4167 | if (gdb_signal_to_host_p ((enum gdb_signal) sig)) |
4168 | signal = gdb_signal_to_host ((enum gdb_signal) sig); | |
bd99dc85 PA |
4169 | else |
4170 | signal = 0; | |
4171 | myresume (own_buf, 1, signal); | |
4172 | break; | |
4173 | case 'c': | |
4174 | require_running (own_buf); | |
4175 | signal = 0; | |
4176 | myresume (own_buf, 0, signal); | |
4177 | break; | |
4178 | case 's': | |
4179 | require_running (own_buf); | |
4180 | signal = 0; | |
4181 | myresume (own_buf, 1, signal); | |
4182 | break; | |
c6314022 AR |
4183 | case 'Z': /* insert_ ... */ |
4184 | /* Fallthrough. */ | |
4185 | case 'z': /* remove_ ... */ | |
bd99dc85 | 4186 | { |
bd99dc85 | 4187 | char *dataptr; |
aca22551 | 4188 | ULONGEST addr; |
27165294 | 4189 | int kind; |
bd99dc85 | 4190 | char type = own_buf[1]; |
c6314022 | 4191 | int res; |
d993e290 | 4192 | const int insert = ch == 'Z'; |
aca22551 PA |
4193 | char *p = &own_buf[3]; |
4194 | ||
4195 | p = unpack_varlen_hex (p, &addr); | |
27165294 | 4196 | kind = strtol (p + 1, &dataptr, 16); |
c6314022 | 4197 | |
802e8e6d | 4198 | if (insert) |
d993e290 | 4199 | { |
802e8e6d PA |
4200 | struct breakpoint *bp; |
4201 | ||
27165294 | 4202 | bp = set_gdb_breakpoint (type, addr, kind, &res); |
802e8e6d | 4203 | if (bp != NULL) |
9f3a5c85 | 4204 | { |
802e8e6d PA |
4205 | res = 0; |
4206 | ||
4207 | /* GDB may have sent us a list of *point parameters to | |
4208 | be evaluated on the target's side. Read such list | |
4209 | here. If we already have a list of parameters, GDB | |
4210 | is telling us to drop that list and use this one | |
4211 | instead. */ | |
0a261ed8 | 4212 | clear_breakpoint_conditions_and_commands (bp); |
802e8e6d | 4213 | process_point_options (bp, &dataptr); |
9f3a5c85 | 4214 | } |
d993e290 | 4215 | } |
802e8e6d | 4216 | else |
27165294 | 4217 | res = delete_gdb_breakpoint (type, addr, kind); |
bd99dc85 | 4218 | |
c6314022 AR |
4219 | if (res == 0) |
4220 | write_ok (own_buf); | |
4221 | else if (res == 1) | |
4222 | /* Unsupported. */ | |
4223 | own_buf[0] = '\0'; | |
bd99dc85 | 4224 | else |
c6314022 | 4225 | write_enn (own_buf); |
bd99dc85 PA |
4226 | break; |
4227 | } | |
4228 | case 'k': | |
4229 | response_needed = 0; | |
4230 | if (!target_running ()) | |
95954743 PA |
4231 | /* The packet we received doesn't make sense - but we can't |
4232 | reply to it, either. */ | |
8336d594 | 4233 | return 0; |
c906108c | 4234 | |
95954743 PA |
4235 | fprintf (stderr, "Killing all inferiors\n"); |
4236 | for_each_inferior (&all_processes, kill_inferior_callback); | |
c906108c | 4237 | |
bd99dc85 PA |
4238 | /* When using the extended protocol, we wait with no program |
4239 | running. The traditional protocol will exit instead. */ | |
4240 | if (extended_protocol) | |
4241 | { | |
4242 | last_status.kind = TARGET_WAITKIND_EXITED; | |
a493e3e2 | 4243 | last_status.value.sig = GDB_SIGNAL_KILL; |
8336d594 | 4244 | return 0; |
bd99dc85 PA |
4245 | } |
4246 | else | |
8336d594 PA |
4247 | exit (0); |
4248 | ||
bd99dc85 PA |
4249 | case 'T': |
4250 | { | |
95954743 | 4251 | ptid_t gdb_id, thread_id; |
bd99dc85 PA |
4252 | |
4253 | require_running (own_buf); | |
95954743 PA |
4254 | |
4255 | gdb_id = read_ptid (&own_buf[1], NULL); | |
bd99dc85 | 4256 | thread_id = gdb_id_to_thread_id (gdb_id); |
95954743 | 4257 | if (ptid_equal (thread_id, null_ptid)) |
bd99dc85 PA |
4258 | { |
4259 | write_enn (own_buf); | |
4260 | break; | |
4261 | } | |
4262 | ||
4263 | if (mythread_alive (thread_id)) | |
4264 | write_ok (own_buf); | |
4265 | else | |
4266 | write_enn (own_buf); | |
4267 | } | |
4268 | break; | |
4269 | case 'R': | |
4270 | response_needed = 0; | |
4271 | ||
4272 | /* Restarting the inferior is only supported in the extended | |
4273 | protocol. */ | |
4274 | if (extended_protocol) | |
4275 | { | |
4276 | if (target_running ()) | |
95954743 PA |
4277 | for_each_inferior (&all_processes, |
4278 | kill_inferior_callback); | |
bd99dc85 PA |
4279 | fprintf (stderr, "GDBserver restarting\n"); |
4280 | ||
4281 | /* Wait till we are at 1st instruction in prog. */ | |
4282 | if (program_argv != NULL) | |
51aee833 YQ |
4283 | { |
4284 | start_inferior (program_argv); | |
4285 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
4286 | { | |
4287 | /* Stopped at the first instruction of the target | |
4288 | process. */ | |
4289 | general_thread = last_ptid; | |
4290 | } | |
4291 | else | |
4292 | { | |
4293 | /* Something went wrong. */ | |
4294 | general_thread = null_ptid; | |
4295 | } | |
4296 | } | |
bd99dc85 PA |
4297 | else |
4298 | { | |
4299 | last_status.kind = TARGET_WAITKIND_EXITED; | |
a493e3e2 | 4300 | last_status.value.sig = GDB_SIGNAL_KILL; |
bd99dc85 | 4301 | } |
8336d594 | 4302 | return 0; |
c906108c SS |
4303 | } |
4304 | else | |
4305 | { | |
bd99dc85 PA |
4306 | /* It is a request we don't understand. Respond with an |
4307 | empty packet so that gdb knows that we don't support this | |
4308 | request. */ | |
4309 | own_buf[0] = '\0'; | |
4310 | break; | |
4311 | } | |
4312 | case 'v': | |
4313 | /* Extended (long) request. */ | |
4314 | handle_v_requests (own_buf, packet_len, &new_packet_len); | |
4315 | break; | |
4316 | ||
4317 | default: | |
4318 | /* It is a request we don't understand. Respond with an empty | |
4319 | packet so that gdb knows that we don't support this | |
4320 | request. */ | |
4321 | own_buf[0] = '\0'; | |
4322 | break; | |
4323 | } | |
4324 | ||
4325 | if (new_packet_len != -1) | |
4326 | putpkt_binary (own_buf, new_packet_len); | |
4327 | else | |
4328 | putpkt (own_buf); | |
4329 | ||
4330 | response_needed = 0; | |
4331 | ||
8336d594 PA |
4332 | if (exit_requested) |
4333 | return -1; | |
4334 | ||
4335 | return 0; | |
c906108c | 4336 | } |
bd99dc85 PA |
4337 | |
4338 | /* Event-loop callback for serial events. */ | |
4339 | ||
8336d594 | 4340 | int |
bd99dc85 PA |
4341 | handle_serial_event (int err, gdb_client_data client_data) |
4342 | { | |
4343 | if (debug_threads) | |
87ce2a04 | 4344 | debug_printf ("handling possible serial event\n"); |
bd99dc85 PA |
4345 | |
4346 | /* Really handle it. */ | |
8336d594 PA |
4347 | if (process_serial_event () < 0) |
4348 | return -1; | |
bd99dc85 | 4349 | |
0bfdf32f | 4350 | /* Be sure to not change the selected thread behind GDB's back. |
bd99dc85 | 4351 | Important in the non-stop mode asynchronous protocol. */ |
0bfdf32f | 4352 | set_desired_thread (1); |
8336d594 PA |
4353 | |
4354 | return 0; | |
bd99dc85 PA |
4355 | } |
4356 | ||
f2faf941 PA |
4357 | /* Push a stop notification on the notification queue. */ |
4358 | ||
4359 | static void | |
4360 | push_stop_notification (ptid_t ptid, struct target_waitstatus *status) | |
4361 | { | |
4362 | struct vstop_notif *vstop_notif = XNEW (struct vstop_notif); | |
4363 | ||
4364 | vstop_notif->status = *status; | |
4365 | vstop_notif->ptid = ptid; | |
4366 | /* Push Stop notification. */ | |
4367 | notif_push (¬if_stop, (struct notif_event *) vstop_notif); | |
4368 | } | |
4369 | ||
bd99dc85 PA |
4370 | /* Event-loop callback for target events. */ |
4371 | ||
8336d594 | 4372 | int |
bd99dc85 PA |
4373 | handle_target_event (int err, gdb_client_data client_data) |
4374 | { | |
4375 | if (debug_threads) | |
87ce2a04 | 4376 | debug_printf ("handling possible target event\n"); |
bd99dc85 | 4377 | |
95954743 PA |
4378 | last_ptid = mywait (minus_one_ptid, &last_status, |
4379 | TARGET_WNOHANG, 1); | |
bd99dc85 | 4380 | |
fa96cb38 PA |
4381 | if (last_status.kind == TARGET_WAITKIND_NO_RESUMED) |
4382 | { | |
f2faf941 PA |
4383 | if (gdb_connected () && report_no_resumed) |
4384 | push_stop_notification (null_ptid, &last_status); | |
fa96cb38 PA |
4385 | } |
4386 | else if (last_status.kind != TARGET_WAITKIND_IGNORE) | |
bd99dc85 | 4387 | { |
8336d594 PA |
4388 | int pid = ptid_get_pid (last_ptid); |
4389 | struct process_info *process = find_process_pid (pid); | |
4390 | int forward_event = !gdb_connected () || process->gdb_detached; | |
4391 | ||
4392 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
4393 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
f9e39928 PA |
4394 | { |
4395 | mark_breakpoints_out (process); | |
4396 | mourn_inferior (process); | |
4397 | } | |
65706a29 PA |
4398 | else if (last_status.kind == TARGET_WAITKIND_THREAD_EXITED) |
4399 | ; | |
ce1a5b52 | 4400 | else |
d20a8ad9 PA |
4401 | { |
4402 | /* We're reporting this thread as stopped. Update its | |
4403 | "want-stopped" state to what the client wants, until it | |
4404 | gets a new resume action. */ | |
0bfdf32f GB |
4405 | current_thread->last_resume_kind = resume_stop; |
4406 | current_thread->last_status = last_status; | |
d20a8ad9 | 4407 | } |
8336d594 PA |
4408 | |
4409 | if (forward_event) | |
4410 | { | |
4411 | if (!target_running ()) | |
4412 | { | |
4413 | /* The last process exited. We're done. */ | |
4414 | exit (0); | |
4415 | } | |
4416 | ||
65706a29 PA |
4417 | if (last_status.kind == TARGET_WAITKIND_EXITED |
4418 | || last_status.kind == TARGET_WAITKIND_SIGNALLED | |
4419 | || last_status.kind == TARGET_WAITKIND_THREAD_EXITED) | |
4420 | ; | |
4421 | else | |
8336d594 PA |
4422 | { |
4423 | /* A thread stopped with a signal, but gdb isn't | |
4424 | connected to handle it. Pass it down to the | |
4425 | inferior, as if it wasn't being traced. */ | |
4426 | struct thread_resume resume_info; | |
4427 | ||
4428 | if (debug_threads) | |
87ce2a04 DE |
4429 | debug_printf ("GDB not connected; forwarding event %d for" |
4430 | " [%s]\n", | |
4431 | (int) last_status.kind, | |
4432 | target_pid_to_str (last_ptid)); | |
8336d594 PA |
4433 | |
4434 | resume_info.thread = last_ptid; | |
4435 | resume_info.kind = resume_continue; | |
65706a29 PA |
4436 | if (last_status.kind == TARGET_WAITKIND_STOPPED) |
4437 | resume_info.sig = gdb_signal_to_host (last_status.value.sig); | |
4438 | else | |
4439 | resume_info.sig = 0; | |
8336d594 PA |
4440 | (*the_target->resume) (&resume_info, 1); |
4441 | } | |
8336d594 PA |
4442 | } |
4443 | else | |
f2faf941 | 4444 | push_stop_notification (last_ptid, &last_status); |
bd99dc85 PA |
4445 | } |
4446 | ||
0bfdf32f | 4447 | /* Be sure to not change the selected thread behind GDB's back. |
bd99dc85 | 4448 | Important in the non-stop mode asynchronous protocol. */ |
0bfdf32f | 4449 | set_desired_thread (1); |
8336d594 PA |
4450 | |
4451 | return 0; | |
bd99dc85 | 4452 | } |