Commit | Line | Data |
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c906108c | 1 | /* Main code for remote server for GDB. |
0b302171 JB |
2 | Copyright (C) 1989, 1993-1995, 1997-2000, 2002-2012 Free Software |
3 | Foundation, Inc. | |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "server.h" | |
d1feda86 | 21 | #include "agent.h" |
c906108c | 22 | |
68070c10 | 23 | #if HAVE_UNISTD_H |
a9fa9f7d | 24 | #include <unistd.h> |
68070c10 PA |
25 | #endif |
26 | #if HAVE_SIGNAL_H | |
a9fa9f7d | 27 | #include <signal.h> |
68070c10 | 28 | #endif |
b80864fb | 29 | #if HAVE_SYS_WAIT_H |
a9fa9f7d | 30 | #include <sys/wait.h> |
b80864fb | 31 | #endif |
a9fa9f7d | 32 | |
95954743 PA |
33 | ptid_t cont_thread; |
34 | ptid_t general_thread; | |
5b1c542e | 35 | |
0d62e5e8 DJ |
36 | int server_waiting; |
37 | ||
2d717e4f | 38 | static int extended_protocol; |
2d717e4f DJ |
39 | static int response_needed; |
40 | static int exit_requested; | |
41 | ||
03f2bd59 JK |
42 | /* --once: Exit after the first connection has closed. */ |
43 | int run_once; | |
44 | ||
95954743 | 45 | int multi_process; |
bd99dc85 PA |
46 | int non_stop; |
47 | ||
03583c20 UW |
48 | /* Whether we should attempt to disable the operating system's address |
49 | space randomization feature before starting an inferior. */ | |
50 | int disable_randomization = 1; | |
51 | ||
ccd213ac | 52 | static char **program_argv, **wrapper_argv; |
2d717e4f | 53 | |
c74d0ad8 DJ |
54 | /* Enable miscellaneous debugging output. The name is historical - it |
55 | was originally used to debug LinuxThreads support. */ | |
56 | int debug_threads; | |
57 | ||
aa5ca48f DE |
58 | /* Enable debugging of h/w breakpoint/watchpoint support. */ |
59 | int debug_hw_points; | |
60 | ||
89be2091 DJ |
61 | int pass_signals[TARGET_SIGNAL_LAST]; |
62 | ||
c906108c | 63 | jmp_buf toplevel; |
c906108c | 64 | |
9b4b61c8 UW |
65 | const char *gdbserver_xmltarget; |
66 | ||
a9fa9f7d DJ |
67 | /* The PID of the originally created or attached inferior. Used to |
68 | send signals to the process when GDB sends us an asynchronous interrupt | |
69 | (user hitting Control-C in the client), and to wait for the child to exit | |
70 | when no longer debugging it. */ | |
71 | ||
a1928bad | 72 | unsigned long signal_pid; |
a9fa9f7d | 73 | |
290fadea RS |
74 | #ifdef SIGTTOU |
75 | /* A file descriptor for the controlling terminal. */ | |
76 | int terminal_fd; | |
77 | ||
78 | /* TERMINAL_FD's original foreground group. */ | |
79 | pid_t old_foreground_pgrp; | |
80 | ||
81 | /* Hand back terminal ownership to the original foreground group. */ | |
82 | ||
83 | static void | |
84 | restore_old_foreground_pgrp (void) | |
85 | { | |
86 | tcsetpgrp (terminal_fd, old_foreground_pgrp); | |
87 | } | |
88 | #endif | |
89 | ||
ec56be1b PA |
90 | /* Set if you want to disable optional thread related packets support |
91 | in gdbserver, for the sake of testing GDB against stubs that don't | |
92 | support them. */ | |
93 | int disable_packet_vCont; | |
94 | int disable_packet_Tthread; | |
95 | int disable_packet_qC; | |
96 | int disable_packet_qfThreadInfo; | |
97 | ||
5b1c542e PA |
98 | /* Last status reported to GDB. */ |
99 | static struct target_waitstatus last_status; | |
95954743 | 100 | static ptid_t last_ptid; |
5b1c542e | 101 | |
bd99dc85 PA |
102 | static char *own_buf; |
103 | static unsigned char *mem_buf; | |
104 | ||
105 | /* Structure holding information relative to a single stop reply. We | |
106 | keep a queue of these (really a singly-linked list) to push to GDB | |
107 | in non-stop mode. */ | |
108 | struct vstop_notif | |
109 | { | |
110 | /* Pointer to next in list. */ | |
111 | struct vstop_notif *next; | |
112 | ||
113 | /* Thread or process that got the event. */ | |
95954743 | 114 | ptid_t ptid; |
bd99dc85 PA |
115 | |
116 | /* Event info. */ | |
117 | struct target_waitstatus status; | |
118 | }; | |
119 | ||
120 | /* The pending stop replies list head. */ | |
121 | static struct vstop_notif *notif_queue = NULL; | |
122 | ||
123 | /* Put a stop reply to the stop reply queue. */ | |
124 | ||
125 | static void | |
95954743 | 126 | queue_stop_reply (ptid_t ptid, struct target_waitstatus *status) |
bd99dc85 PA |
127 | { |
128 | struct vstop_notif *new_notif; | |
129 | ||
cfdee94a | 130 | new_notif = xmalloc (sizeof (*new_notif)); |
bd99dc85 PA |
131 | new_notif->next = NULL; |
132 | new_notif->ptid = ptid; | |
133 | new_notif->status = *status; | |
134 | ||
135 | if (notif_queue) | |
136 | { | |
137 | struct vstop_notif *tail; | |
138 | for (tail = notif_queue; | |
139 | tail && tail->next; | |
140 | tail = tail->next) | |
141 | ; | |
142 | tail->next = new_notif; | |
143 | } | |
144 | else | |
145 | notif_queue = new_notif; | |
146 | ||
147 | if (remote_debug) | |
148 | { | |
149 | int i = 0; | |
150 | struct vstop_notif *n; | |
151 | ||
152 | for (n = notif_queue; n; n = n->next) | |
153 | i++; | |
154 | ||
155 | fprintf (stderr, "pending stop replies: %d\n", i); | |
156 | } | |
157 | } | |
158 | ||
159 | /* Place an event in the stop reply queue, and push a notification if | |
160 | we aren't sending one yet. */ | |
161 | ||
162 | void | |
95954743 | 163 | push_event (ptid_t ptid, struct target_waitstatus *status) |
bd99dc85 | 164 | { |
d20a8ad9 PA |
165 | gdb_assert (status->kind != TARGET_WAITKIND_IGNORE); |
166 | ||
bd99dc85 PA |
167 | queue_stop_reply (ptid, status); |
168 | ||
169 | /* If this is the first stop reply in the queue, then inform GDB | |
170 | about it, by sending a Stop notification. */ | |
171 | if (notif_queue->next == NULL) | |
172 | { | |
173 | char *p = own_buf; | |
174 | strcpy (p, "Stop:"); | |
175 | p += strlen (p); | |
176 | prepare_resume_reply (p, | |
177 | notif_queue->ptid, ¬if_queue->status); | |
178 | putpkt_notif (own_buf); | |
179 | } | |
180 | } | |
181 | ||
95954743 PA |
182 | /* Get rid of the currently pending stop replies for PID. If PID is |
183 | -1, then apply to all processes. */ | |
bd99dc85 PA |
184 | |
185 | static void | |
95954743 | 186 | discard_queued_stop_replies (int pid) |
bd99dc85 | 187 | { |
95954743 | 188 | struct vstop_notif *prev = NULL, *reply, *next; |
bd99dc85 | 189 | |
95954743 | 190 | for (reply = notif_queue; reply; reply = next) |
bd99dc85 | 191 | { |
95954743 PA |
192 | next = reply->next; |
193 | ||
194 | if (pid == -1 | |
195 | || ptid_get_pid (reply->ptid) == pid) | |
196 | { | |
197 | if (reply == notif_queue) | |
198 | notif_queue = next; | |
199 | else | |
200 | prev->next = reply->next; | |
bd99dc85 | 201 | |
95954743 PA |
202 | free (reply); |
203 | } | |
204 | else | |
205 | prev = reply; | |
bd99dc85 PA |
206 | } |
207 | } | |
208 | ||
209 | /* If there are more stop replies to push, push one now. */ | |
210 | ||
211 | static void | |
212 | send_next_stop_reply (char *own_buf) | |
213 | { | |
214 | if (notif_queue) | |
215 | prepare_resume_reply (own_buf, | |
216 | notif_queue->ptid, | |
217 | ¬if_queue->status); | |
218 | else | |
219 | write_ok (own_buf); | |
220 | } | |
221 | ||
2d717e4f DJ |
222 | static int |
223 | target_running (void) | |
224 | { | |
225 | return all_threads.head != NULL; | |
226 | } | |
227 | ||
fc620387 | 228 | static int |
5b1c542e | 229 | start_inferior (char **argv) |
c906108c | 230 | { |
ccd213ac | 231 | char **new_argv = argv; |
2d717e4f | 232 | |
ccd213ac DJ |
233 | if (wrapper_argv != NULL) |
234 | { | |
235 | int i, count = 1; | |
236 | ||
237 | for (i = 0; wrapper_argv[i] != NULL; i++) | |
238 | count++; | |
239 | for (i = 0; argv[i] != NULL; i++) | |
240 | count++; | |
241 | new_argv = alloca (sizeof (char *) * count); | |
242 | count = 0; | |
243 | for (i = 0; wrapper_argv[i] != NULL; i++) | |
244 | new_argv[count++] = wrapper_argv[i]; | |
245 | for (i = 0; argv[i] != NULL; i++) | |
246 | new_argv[count++] = argv[i]; | |
247 | new_argv[count] = NULL; | |
248 | } | |
249 | ||
65730243 DE |
250 | if (debug_threads) |
251 | { | |
252 | int i; | |
253 | for (i = 0; new_argv[i]; ++i) | |
254 | fprintf (stderr, "new_argv[%d] = \"%s\"\n", i, new_argv[i]); | |
255 | fflush (stderr); | |
256 | } | |
257 | ||
b80864fb | 258 | #ifdef SIGTTOU |
a9fa9f7d DJ |
259 | signal (SIGTTOU, SIG_DFL); |
260 | signal (SIGTTIN, SIG_DFL); | |
b80864fb | 261 | #endif |
a9fa9f7d | 262 | |
ccd213ac | 263 | signal_pid = create_inferior (new_argv[0], new_argv); |
0d62e5e8 | 264 | |
c588c53c MS |
265 | /* FIXME: we don't actually know at this point that the create |
266 | actually succeeded. We won't know that until we wait. */ | |
a1928bad | 267 | fprintf (stderr, "Process %s created; pid = %ld\n", argv[0], |
a9fa9f7d | 268 | signal_pid); |
b80864fb | 269 | fflush (stderr); |
a9fa9f7d | 270 | |
b80864fb | 271 | #ifdef SIGTTOU |
a9fa9f7d DJ |
272 | signal (SIGTTOU, SIG_IGN); |
273 | signal (SIGTTIN, SIG_IGN); | |
290fadea RS |
274 | terminal_fd = fileno (stderr); |
275 | old_foreground_pgrp = tcgetpgrp (terminal_fd); | |
276 | tcsetpgrp (terminal_fd, signal_pid); | |
277 | atexit (restore_old_foreground_pgrp); | |
b80864fb | 278 | #endif |
c906108c | 279 | |
ccd213ac DJ |
280 | if (wrapper_argv != NULL) |
281 | { | |
282 | struct thread_resume resume_info; | |
ccd213ac | 283 | |
95954743 | 284 | resume_info.thread = pid_to_ptid (signal_pid); |
bd99dc85 | 285 | resume_info.kind = resume_continue; |
ccd213ac | 286 | resume_info.sig = 0; |
ccd213ac | 287 | |
06db92f0 | 288 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
bd99dc85 | 289 | |
5b1c542e PA |
290 | if (last_status.kind != TARGET_WAITKIND_STOPPED) |
291 | return signal_pid; | |
ccd213ac DJ |
292 | |
293 | do | |
294 | { | |
2bd7c093 | 295 | (*the_target->resume) (&resume_info, 1); |
ccd213ac | 296 | |
06db92f0 | 297 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
5b1c542e PA |
298 | if (last_status.kind != TARGET_WAITKIND_STOPPED) |
299 | return signal_pid; | |
d20a8ad9 PA |
300 | |
301 | current_inferior->last_resume_kind = resume_stop; | |
302 | current_inferior->last_status = last_status; | |
ccd213ac | 303 | } |
5b1c542e | 304 | while (last_status.value.sig != TARGET_SIGNAL_TRAP); |
ccd213ac | 305 | |
d20a8ad9 PA |
306 | current_inferior->last_resume_kind = resume_stop; |
307 | current_inferior->last_status = last_status; | |
5b1c542e | 308 | return signal_pid; |
ccd213ac DJ |
309 | } |
310 | ||
5b1c542e PA |
311 | /* Wait till we are at 1st instruction in program, return new pid |
312 | (assuming success). */ | |
95954743 | 313 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
5b1c542e | 314 | |
d20a8ad9 PA |
315 | if (last_status.kind != TARGET_WAITKIND_EXITED |
316 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
317 | { | |
318 | current_inferior->last_resume_kind = resume_stop; | |
319 | current_inferior->last_status = last_status; | |
320 | } | |
321 | ||
5b1c542e | 322 | return signal_pid; |
c906108c SS |
323 | } |
324 | ||
45b7b345 | 325 | static int |
5b1c542e | 326 | attach_inferior (int pid) |
45b7b345 DJ |
327 | { |
328 | /* myattach should return -1 if attaching is unsupported, | |
329 | 0 if it succeeded, and call error() otherwise. */ | |
a9fa9f7d | 330 | |
45b7b345 DJ |
331 | if (myattach (pid) != 0) |
332 | return -1; | |
333 | ||
6910d122 | 334 | fprintf (stderr, "Attached; pid = %d\n", pid); |
b80864fb | 335 | fflush (stderr); |
6910d122 | 336 | |
a9fa9f7d DJ |
337 | /* FIXME - It may be that we should get the SIGNAL_PID from the |
338 | attach function, so that it can be the main thread instead of | |
339 | whichever we were told to attach to. */ | |
340 | signal_pid = pid; | |
341 | ||
7d5d4e98 PA |
342 | /* Clear this so the backend doesn't get confused, thinking |
343 | CONT_THREAD died, and it needs to resume all threads. */ | |
344 | cont_thread = null_ptid; | |
345 | ||
bd99dc85 PA |
346 | if (!non_stop) |
347 | { | |
95954743 | 348 | last_ptid = mywait (pid_to_ptid (pid), &last_status, 0, 0); |
bd99dc85 PA |
349 | |
350 | /* GDB knows to ignore the first SIGSTOP after attaching to a running | |
351 | process using the "attach" command, but this is different; it's | |
352 | just using "target remote". Pretend it's just starting up. */ | |
353 | if (last_status.kind == TARGET_WAITKIND_STOPPED | |
354 | && last_status.value.sig == TARGET_SIGNAL_STOP) | |
355 | last_status.value.sig = TARGET_SIGNAL_TRAP; | |
d20a8ad9 PA |
356 | |
357 | current_inferior->last_resume_kind = resume_stop; | |
358 | current_inferior->last_status = last_status; | |
bd99dc85 | 359 | } |
9db87ebd | 360 | |
45b7b345 DJ |
361 | return 0; |
362 | } | |
363 | ||
c906108c | 364 | extern int remote_debug; |
ce3a066d | 365 | |
0876f84a DJ |
366 | /* Decode a qXfer read request. Return 0 if everything looks OK, |
367 | or -1 otherwise. */ | |
368 | ||
369 | static int | |
d08aafef | 370 | decode_xfer_read (char *buf, CORE_ADDR *ofs, unsigned int *len) |
0876f84a | 371 | { |
d08aafef PA |
372 | /* After the read marker and annex, qXfer looks like a |
373 | traditional 'm' packet. */ | |
374 | decode_m_packet (buf, ofs, len); | |
375 | ||
376 | return 0; | |
377 | } | |
378 | ||
379 | static int | |
380 | decode_xfer (char *buf, char **object, char **rw, char **annex, char **offset) | |
381 | { | |
382 | /* Extract and NUL-terminate the object. */ | |
383 | *object = buf; | |
384 | while (*buf && *buf != ':') | |
385 | buf++; | |
386 | if (*buf == '\0') | |
387 | return -1; | |
388 | *buf++ = 0; | |
389 | ||
390 | /* Extract and NUL-terminate the read/write action. */ | |
391 | *rw = buf; | |
392 | while (*buf && *buf != ':') | |
393 | buf++; | |
394 | if (*buf == '\0') | |
395 | return -1; | |
396 | *buf++ = 0; | |
397 | ||
0876f84a DJ |
398 | /* Extract and NUL-terminate the annex. */ |
399 | *annex = buf; | |
400 | while (*buf && *buf != ':') | |
401 | buf++; | |
402 | if (*buf == '\0') | |
403 | return -1; | |
404 | *buf++ = 0; | |
405 | ||
d08aafef | 406 | *offset = buf; |
0876f84a DJ |
407 | return 0; |
408 | } | |
409 | ||
410 | /* Write the response to a successful qXfer read. Returns the | |
411 | length of the (binary) data stored in BUF, corresponding | |
412 | to as much of DATA/LEN as we could fit. IS_MORE controls | |
413 | the first character of the response. */ | |
414 | static int | |
23181151 | 415 | write_qxfer_response (char *buf, const void *data, int len, int is_more) |
0876f84a DJ |
416 | { |
417 | int out_len; | |
418 | ||
419 | if (is_more) | |
420 | buf[0] = 'm'; | |
421 | else | |
422 | buf[0] = 'l'; | |
423 | ||
424 | return remote_escape_output (data, len, (unsigned char *) buf + 1, &out_len, | |
425 | PBUFSIZ - 2) + 1; | |
426 | } | |
427 | ||
89be2091 | 428 | /* Handle all of the extended 'Q' packets. */ |
ae1ada35 DE |
429 | |
430 | static void | |
89be2091 DJ |
431 | handle_general_set (char *own_buf) |
432 | { | |
433 | if (strncmp ("QPassSignals:", own_buf, strlen ("QPassSignals:")) == 0) | |
434 | { | |
435 | int numsigs = (int) TARGET_SIGNAL_LAST, i; | |
436 | const char *p = own_buf + strlen ("QPassSignals:"); | |
437 | CORE_ADDR cursig; | |
438 | ||
439 | p = decode_address_to_semicolon (&cursig, p); | |
440 | for (i = 0; i < numsigs; i++) | |
441 | { | |
442 | if (i == cursig) | |
443 | { | |
444 | pass_signals[i] = 1; | |
445 | if (*p == '\0') | |
446 | /* Keep looping, to clear the remaining signals. */ | |
447 | cursig = -1; | |
448 | else | |
449 | p = decode_address_to_semicolon (&cursig, p); | |
450 | } | |
451 | else | |
452 | pass_signals[i] = 0; | |
453 | } | |
454 | strcpy (own_buf, "OK"); | |
455 | return; | |
456 | } | |
457 | ||
a6f3e723 SL |
458 | if (strcmp (own_buf, "QStartNoAckMode") == 0) |
459 | { | |
460 | if (remote_debug) | |
461 | { | |
462 | fprintf (stderr, "[noack mode enabled]\n"); | |
463 | fflush (stderr); | |
464 | } | |
465 | ||
466 | noack_mode = 1; | |
467 | write_ok (own_buf); | |
468 | return; | |
469 | } | |
470 | ||
bd99dc85 PA |
471 | if (strncmp (own_buf, "QNonStop:", 9) == 0) |
472 | { | |
473 | char *mode = own_buf + 9; | |
474 | int req = -1; | |
475 | char *req_str; | |
476 | ||
477 | if (strcmp (mode, "0") == 0) | |
478 | req = 0; | |
479 | else if (strcmp (mode, "1") == 0) | |
480 | req = 1; | |
481 | else | |
482 | { | |
483 | /* We don't know what this mode is, so complain to | |
484 | GDB. */ | |
485 | fprintf (stderr, "Unknown non-stop mode requested: %s\n", | |
486 | own_buf); | |
487 | write_enn (own_buf); | |
488 | return; | |
489 | } | |
490 | ||
491 | req_str = req ? "non-stop" : "all-stop"; | |
492 | if (start_non_stop (req) != 0) | |
493 | { | |
494 | fprintf (stderr, "Setting %s mode failed\n", req_str); | |
495 | write_enn (own_buf); | |
496 | return; | |
497 | } | |
498 | ||
499 | non_stop = req; | |
500 | ||
501 | if (remote_debug) | |
502 | fprintf (stderr, "[%s mode enabled]\n", req_str); | |
503 | ||
504 | write_ok (own_buf); | |
505 | return; | |
506 | } | |
507 | ||
03583c20 UW |
508 | if (strncmp ("QDisableRandomization:", own_buf, |
509 | strlen ("QDisableRandomization:")) == 0) | |
510 | { | |
511 | char *packet = own_buf + strlen ("QDisableRandomization:"); | |
512 | ULONGEST setting; | |
513 | ||
514 | unpack_varlen_hex (packet, &setting); | |
515 | disable_randomization = setting; | |
516 | ||
517 | if (remote_debug) | |
518 | { | |
519 | if (disable_randomization) | |
520 | fprintf (stderr, "[address space randomization disabled]\n"); | |
521 | else | |
522 | fprintf (stderr, "[address space randomization enabled]\n"); | |
523 | } | |
524 | ||
525 | write_ok (own_buf); | |
526 | return; | |
527 | } | |
528 | ||
219f2f23 PA |
529 | if (target_supports_tracepoints () |
530 | && handle_tracepoint_general_set (own_buf)) | |
531 | return; | |
532 | ||
d1feda86 YQ |
533 | if (strncmp ("QAgent:", own_buf, strlen ("QAgent:")) == 0) |
534 | { | |
535 | char *mode = own_buf + strlen ("QAgent:"); | |
536 | int req = 0; | |
537 | ||
538 | if (strcmp (mode, "0") == 0) | |
539 | req = 0; | |
540 | else if (strcmp (mode, "1") == 0) | |
541 | req = 1; | |
542 | else | |
543 | { | |
544 | /* We don't know what this value is, so complain to GDB. */ | |
545 | sprintf (own_buf, "E.Unknown QAgent value"); | |
546 | return; | |
547 | } | |
548 | ||
549 | /* Update the flag. */ | |
550 | use_agent = req; | |
551 | if (remote_debug) | |
552 | fprintf (stderr, "[%s agent]\n", req ? "Enable" : "Disable"); | |
553 | write_ok (own_buf); | |
554 | return; | |
555 | } | |
556 | ||
89be2091 DJ |
557 | /* Otherwise we didn't know what packet it was. Say we didn't |
558 | understand it. */ | |
559 | own_buf[0] = 0; | |
560 | } | |
561 | ||
23181151 | 562 | static const char * |
fb1e4ffc | 563 | get_features_xml (const char *annex) |
23181151 | 564 | { |
9b4b61c8 UW |
565 | /* gdbserver_xmltarget defines what to return when looking |
566 | for the "target.xml" file. Its contents can either be | |
567 | verbatim XML code (prefixed with a '@') or else the name | |
568 | of the actual XML file to be used in place of "target.xml". | |
fb1e4ffc | 569 | |
9b4b61c8 UW |
570 | This variable is set up from the auto-generated |
571 | init_registers_... routine for the current target. */ | |
fb1e4ffc | 572 | |
9b4b61c8 | 573 | if (gdbserver_xmltarget |
221c031f | 574 | && strcmp (annex, "target.xml") == 0) |
23181151 | 575 | { |
9b4b61c8 UW |
576 | if (*gdbserver_xmltarget == '@') |
577 | return gdbserver_xmltarget + 1; | |
23181151 | 578 | else |
9b4b61c8 | 579 | annex = gdbserver_xmltarget; |
23181151 DJ |
580 | } |
581 | ||
9b4b61c8 UW |
582 | #ifdef USE_XML |
583 | { | |
584 | extern const char *const xml_builtin[][2]; | |
585 | int i; | |
586 | ||
587 | /* Look for the annex. */ | |
588 | for (i = 0; xml_builtin[i][0] != NULL; i++) | |
589 | if (strcmp (annex, xml_builtin[i][0]) == 0) | |
590 | break; | |
591 | ||
592 | if (xml_builtin[i][0] != NULL) | |
593 | return xml_builtin[i][1]; | |
594 | } | |
595 | #endif | |
596 | ||
597 | return NULL; | |
23181151 DJ |
598 | } |
599 | ||
c74d0ad8 DJ |
600 | void |
601 | monitor_show_help (void) | |
602 | { | |
603 | monitor_output ("The following monitor commands are supported:\n"); | |
604 | monitor_output (" set debug <0|1>\n"); | |
1b3f6016 | 605 | monitor_output (" Enable general debugging messages\n"); |
aa5ca48f DE |
606 | monitor_output (" set debug-hw-points <0|1>\n"); |
607 | monitor_output (" Enable h/w breakpoint/watchpoint debugging messages\n"); | |
c74d0ad8 DJ |
608 | monitor_output (" set remote-debug <0|1>\n"); |
609 | monitor_output (" Enable remote protocol debugging messages\n"); | |
ecd7ecbc DJ |
610 | monitor_output (" exit\n"); |
611 | monitor_output (" Quit GDBserver\n"); | |
c74d0ad8 DJ |
612 | } |
613 | ||
764880b7 PA |
614 | /* Read trace frame or inferior memory. Returns the number of bytes |
615 | actually read, zero when no further transfer is possible, and -1 on | |
616 | error. Return of a positive value smaller than LEN does not | |
617 | indicate there's no more to be read, only the end of the transfer. | |
618 | E.g., when GDB reads memory from a traceframe, a first request may | |
619 | be served from a memory block that does not cover the whole request | |
620 | length. A following request gets the rest served from either | |
621 | another block (of the same traceframe) or from the read-only | |
622 | regions. */ | |
219f2f23 PA |
623 | |
624 | static int | |
90d74c30 | 625 | gdb_read_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) |
219f2f23 | 626 | { |
764880b7 | 627 | int res; |
90d74c30 | 628 | |
219f2f23 PA |
629 | if (current_traceframe >= 0) |
630 | { | |
631 | ULONGEST nbytes; | |
632 | ULONGEST length = len; | |
633 | ||
634 | if (traceframe_read_mem (current_traceframe, | |
635 | memaddr, myaddr, len, &nbytes)) | |
636 | return EIO; | |
637 | /* Data read from trace buffer, we're done. */ | |
764880b7 PA |
638 | if (nbytes > 0) |
639 | return nbytes; | |
219f2f23 | 640 | if (!in_readonly_region (memaddr, length)) |
764880b7 | 641 | return -1; |
219f2f23 PA |
642 | /* Otherwise we have a valid readonly case, fall through. */ |
643 | /* (assume no half-trace half-real blocks for now) */ | |
644 | } | |
645 | ||
764880b7 PA |
646 | res = prepare_to_access_memory (); |
647 | if (res == 0) | |
90d74c30 | 648 | { |
764880b7 | 649 | res = read_inferior_memory (memaddr, myaddr, len); |
0146f85b | 650 | done_accessing_memory (); |
90d74c30 | 651 | |
764880b7 PA |
652 | return res == 0 ? len : -1; |
653 | } | |
654 | else | |
655 | return -1; | |
219f2f23 PA |
656 | } |
657 | ||
658 | /* Write trace frame or inferior memory. Actually, writing to trace | |
659 | frames is forbidden. */ | |
660 | ||
661 | static int | |
90d74c30 | 662 | gdb_write_memory (CORE_ADDR memaddr, const unsigned char *myaddr, int len) |
219f2f23 PA |
663 | { |
664 | if (current_traceframe >= 0) | |
665 | return EIO; | |
666 | else | |
90d74c30 PA |
667 | { |
668 | int ret; | |
669 | ||
670 | ret = prepare_to_access_memory (); | |
671 | if (ret == 0) | |
672 | { | |
673 | ret = write_inferior_memory (memaddr, myaddr, len); | |
0146f85b | 674 | done_accessing_memory (); |
90d74c30 PA |
675 | } |
676 | return ret; | |
677 | } | |
219f2f23 PA |
678 | } |
679 | ||
08388c79 DE |
680 | /* Subroutine of handle_search_memory to simplify it. */ |
681 | ||
682 | static int | |
683 | handle_search_memory_1 (CORE_ADDR start_addr, CORE_ADDR search_space_len, | |
684 | gdb_byte *pattern, unsigned pattern_len, | |
685 | gdb_byte *search_buf, | |
686 | unsigned chunk_size, unsigned search_buf_size, | |
687 | CORE_ADDR *found_addrp) | |
688 | { | |
689 | /* Prime the search buffer. */ | |
690 | ||
764880b7 PA |
691 | if (gdb_read_memory (start_addr, search_buf, search_buf_size) |
692 | != search_buf_size) | |
08388c79 | 693 | { |
5e1471f5 | 694 | warning ("Unable to access target memory at 0x%lx, halting search.", |
08388c79 DE |
695 | (long) start_addr); |
696 | return -1; | |
697 | } | |
698 | ||
699 | /* Perform the search. | |
700 | ||
701 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
702 | When we've scanned N bytes we copy the trailing bytes to the start and | |
703 | read in another N bytes. */ | |
704 | ||
705 | while (search_space_len >= pattern_len) | |
706 | { | |
707 | gdb_byte *found_ptr; | |
708 | unsigned nr_search_bytes = (search_space_len < search_buf_size | |
709 | ? search_space_len | |
710 | : search_buf_size); | |
711 | ||
712 | found_ptr = memmem (search_buf, nr_search_bytes, pattern, pattern_len); | |
713 | ||
714 | if (found_ptr != NULL) | |
715 | { | |
716 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
717 | *found_addrp = found_addr; | |
718 | return 1; | |
719 | } | |
720 | ||
721 | /* Not found in this chunk, skip to next chunk. */ | |
722 | ||
723 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
724 | if (search_space_len >= chunk_size) | |
725 | search_space_len -= chunk_size; | |
726 | else | |
727 | search_space_len = 0; | |
728 | ||
729 | if (search_space_len >= pattern_len) | |
730 | { | |
731 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 732 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
733 | int nr_to_read; |
734 | ||
735 | /* Copy the trailing part of the previous iteration to the front | |
736 | of the buffer for the next iteration. */ | |
737 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
738 | ||
739 | nr_to_read = (search_space_len - keep_len < chunk_size | |
740 | ? search_space_len - keep_len | |
741 | : chunk_size); | |
742 | ||
90d74c30 | 743 | if (gdb_read_memory (read_addr, search_buf + keep_len, |
764880b7 | 744 | nr_to_read) != search_buf_size) |
08388c79 | 745 | { |
493e2a69 MS |
746 | warning ("Unable to access target memory " |
747 | "at 0x%lx, halting search.", | |
08388c79 DE |
748 | (long) read_addr); |
749 | return -1; | |
750 | } | |
751 | ||
752 | start_addr += chunk_size; | |
753 | } | |
754 | } | |
755 | ||
756 | /* Not found. */ | |
757 | ||
758 | return 0; | |
759 | } | |
760 | ||
761 | /* Handle qSearch:memory packets. */ | |
762 | ||
763 | static void | |
764 | handle_search_memory (char *own_buf, int packet_len) | |
765 | { | |
766 | CORE_ADDR start_addr; | |
767 | CORE_ADDR search_space_len; | |
768 | gdb_byte *pattern; | |
769 | unsigned int pattern_len; | |
770 | /* NOTE: also defined in find.c testcase. */ | |
771 | #define SEARCH_CHUNK_SIZE 16000 | |
772 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
773 | /* Buffer to hold memory contents for searching. */ | |
774 | gdb_byte *search_buf; | |
775 | unsigned search_buf_size; | |
776 | int found; | |
777 | CORE_ADDR found_addr; | |
778 | int cmd_name_len = sizeof ("qSearch:memory:") - 1; | |
779 | ||
aef93bd7 | 780 | pattern = malloc (packet_len); |
08388c79 DE |
781 | if (pattern == NULL) |
782 | { | |
5e1471f5 | 783 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
784 | strcpy (own_buf, "E00"); |
785 | return; | |
786 | } | |
787 | if (decode_search_memory_packet (own_buf + cmd_name_len, | |
788 | packet_len - cmd_name_len, | |
789 | &start_addr, &search_space_len, | |
790 | pattern, &pattern_len) < 0) | |
791 | { | |
792 | free (pattern); | |
5e1471f5 | 793 | error ("Error in parsing qSearch:memory packet"); |
08388c79 DE |
794 | strcpy (own_buf, "E00"); |
795 | return; | |
796 | } | |
797 | ||
798 | search_buf_size = chunk_size + pattern_len - 1; | |
799 | ||
800 | /* No point in trying to allocate a buffer larger than the search space. */ | |
801 | if (search_space_len < search_buf_size) | |
802 | search_buf_size = search_space_len; | |
803 | ||
aef93bd7 | 804 | search_buf = malloc (search_buf_size); |
08388c79 DE |
805 | if (search_buf == NULL) |
806 | { | |
807 | free (pattern); | |
5e1471f5 | 808 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
809 | strcpy (own_buf, "E00"); |
810 | return; | |
811 | } | |
812 | ||
813 | found = handle_search_memory_1 (start_addr, search_space_len, | |
814 | pattern, pattern_len, | |
815 | search_buf, chunk_size, search_buf_size, | |
816 | &found_addr); | |
817 | ||
818 | if (found > 0) | |
819 | sprintf (own_buf, "1,%lx", (long) found_addr); | |
820 | else if (found == 0) | |
821 | strcpy (own_buf, "0"); | |
822 | else | |
823 | strcpy (own_buf, "E00"); | |
824 | ||
825 | free (search_buf); | |
826 | free (pattern); | |
827 | } | |
828 | ||
2d717e4f DJ |
829 | #define require_running(BUF) \ |
830 | if (!target_running ()) \ | |
831 | { \ | |
832 | write_enn (BUF); \ | |
833 | return; \ | |
834 | } | |
835 | ||
cdbfd419 PP |
836 | /* Handle monitor commands not handled by target-specific handlers. */ |
837 | ||
838 | static void | |
d73f2619 | 839 | handle_monitor_command (char *mon, char *own_buf) |
cdbfd419 PP |
840 | { |
841 | if (strcmp (mon, "set debug 1") == 0) | |
842 | { | |
843 | debug_threads = 1; | |
844 | monitor_output ("Debug output enabled.\n"); | |
845 | } | |
846 | else if (strcmp (mon, "set debug 0") == 0) | |
847 | { | |
848 | debug_threads = 0; | |
849 | monitor_output ("Debug output disabled.\n"); | |
850 | } | |
851 | else if (strcmp (mon, "set debug-hw-points 1") == 0) | |
852 | { | |
853 | debug_hw_points = 1; | |
854 | monitor_output ("H/W point debugging output enabled.\n"); | |
855 | } | |
856 | else if (strcmp (mon, "set debug-hw-points 0") == 0) | |
857 | { | |
858 | debug_hw_points = 0; | |
859 | monitor_output ("H/W point debugging output disabled.\n"); | |
860 | } | |
861 | else if (strcmp (mon, "set remote-debug 1") == 0) | |
862 | { | |
863 | remote_debug = 1; | |
864 | monitor_output ("Protocol debug output enabled.\n"); | |
865 | } | |
866 | else if (strcmp (mon, "set remote-debug 0") == 0) | |
867 | { | |
868 | remote_debug = 0; | |
869 | monitor_output ("Protocol debug output disabled.\n"); | |
870 | } | |
871 | else if (strcmp (mon, "help") == 0) | |
872 | monitor_show_help (); | |
873 | else if (strcmp (mon, "exit") == 0) | |
874 | exit_requested = 1; | |
875 | else | |
876 | { | |
877 | monitor_output ("Unknown monitor command.\n\n"); | |
878 | monitor_show_help (); | |
879 | write_enn (own_buf); | |
880 | } | |
881 | } | |
882 | ||
d08aafef PA |
883 | /* Associates a callback with each supported qXfer'able object. */ |
884 | ||
885 | struct qxfer | |
886 | { | |
887 | /* The object this handler handles. */ | |
888 | const char *object; | |
889 | ||
890 | /* Request that the target transfer up to LEN 8-bit bytes of the | |
891 | target's OBJECT. The OFFSET, for a seekable object, specifies | |
892 | the starting point. The ANNEX can be used to provide additional | |
893 | data-specific information to the target. | |
894 | ||
895 | Return the number of bytes actually transfered, zero when no | |
896 | further transfer is possible, -1 on error, and -2 when the | |
897 | transfer is not supported. Return of a positive value smaller | |
898 | than LEN does not indicate the end of the object, only the end of | |
899 | the transfer. | |
900 | ||
901 | One, and only one, of readbuf or writebuf must be non-NULL. */ | |
902 | int (*xfer) (const char *annex, | |
903 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
904 | ULONGEST offset, LONGEST len); | |
905 | }; | |
906 | ||
907 | /* Handle qXfer:auxv:read. */ | |
908 | ||
909 | static int | |
910 | handle_qxfer_auxv (const char *annex, | |
911 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
912 | ULONGEST offset, LONGEST len) | |
913 | { | |
914 | if (the_target->read_auxv == NULL || writebuf != NULL) | |
915 | return -2; | |
916 | ||
917 | if (annex[0] != '\0' || !target_running ()) | |
918 | return -1; | |
919 | ||
920 | return (*the_target->read_auxv) (offset, readbuf, len); | |
921 | } | |
922 | ||
923 | /* Handle qXfer:features:read. */ | |
924 | ||
925 | static int | |
926 | handle_qxfer_features (const char *annex, | |
927 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
928 | ULONGEST offset, LONGEST len) | |
929 | { | |
930 | const char *document; | |
931 | size_t total_len; | |
932 | ||
933 | if (writebuf != NULL) | |
934 | return -2; | |
935 | ||
936 | if (!target_running ()) | |
937 | return -1; | |
938 | ||
939 | /* Grab the correct annex. */ | |
940 | document = get_features_xml (annex); | |
941 | if (document == NULL) | |
942 | return -1; | |
943 | ||
944 | total_len = strlen (document); | |
945 | ||
946 | if (offset > total_len) | |
947 | return -1; | |
948 | ||
949 | if (offset + len > total_len) | |
950 | len = total_len - offset; | |
951 | ||
952 | memcpy (readbuf, document + offset, len); | |
953 | return len; | |
954 | } | |
955 | ||
956 | /* Handle qXfer:libraries:read. */ | |
957 | ||
958 | static int | |
959 | handle_qxfer_libraries (const char *annex, | |
960 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
961 | ULONGEST offset, LONGEST len) | |
962 | { | |
963 | unsigned int total_len; | |
964 | char *document, *p; | |
965 | struct inferior_list_entry *dll_ptr; | |
966 | ||
967 | if (writebuf != NULL) | |
968 | return -2; | |
969 | ||
970 | if (annex[0] != '\0' || !target_running ()) | |
971 | return -1; | |
972 | ||
2268b414 JK |
973 | /* Do not confuse this packet with qXfer:libraries-svr4:read. */ |
974 | if (the_target->qxfer_libraries_svr4 != NULL) | |
975 | return 0; | |
976 | ||
d08aafef PA |
977 | /* Over-estimate the necessary memory. Assume that every character |
978 | in the library name must be escaped. */ | |
979 | total_len = 64; | |
980 | for (dll_ptr = all_dlls.head; dll_ptr != NULL; dll_ptr = dll_ptr->next) | |
981 | total_len += 128 + 6 * strlen (((struct dll_info *) dll_ptr)->name); | |
982 | ||
983 | document = malloc (total_len); | |
984 | if (document == NULL) | |
985 | return -1; | |
986 | ||
987 | strcpy (document, "<library-list>\n"); | |
988 | p = document + strlen (document); | |
989 | ||
990 | for (dll_ptr = all_dlls.head; dll_ptr != NULL; dll_ptr = dll_ptr->next) | |
991 | { | |
992 | struct dll_info *dll = (struct dll_info *) dll_ptr; | |
993 | char *name; | |
994 | ||
995 | strcpy (p, " <library name=\""); | |
996 | p = p + strlen (p); | |
997 | name = xml_escape_text (dll->name); | |
998 | strcpy (p, name); | |
999 | free (name); | |
1000 | p = p + strlen (p); | |
1001 | strcpy (p, "\"><segment address=\""); | |
1002 | p = p + strlen (p); | |
1003 | sprintf (p, "0x%lx", (long) dll->base_addr); | |
1004 | p = p + strlen (p); | |
1005 | strcpy (p, "\"/></library>\n"); | |
1006 | p = p + strlen (p); | |
1007 | } | |
1008 | ||
1009 | strcpy (p, "</library-list>\n"); | |
1010 | ||
1011 | total_len = strlen (document); | |
1012 | ||
1013 | if (offset > total_len) | |
1014 | { | |
1015 | free (document); | |
1016 | return -1; | |
1017 | } | |
1018 | ||
1019 | if (offset + len > total_len) | |
1020 | len = total_len - offset; | |
1021 | ||
1022 | memcpy (readbuf, document + offset, len); | |
1023 | free (document); | |
1024 | return len; | |
1025 | } | |
1026 | ||
2268b414 JK |
1027 | /* Handle qXfer:libraries-svr4:read. */ |
1028 | ||
1029 | static int | |
1030 | handle_qxfer_libraries_svr4 (const char *annex, | |
1031 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1032 | ULONGEST offset, LONGEST len) | |
1033 | { | |
1034 | if (writebuf != NULL) | |
1035 | return -2; | |
1036 | ||
1037 | if (annex[0] != '\0' || !target_running () | |
1038 | || the_target->qxfer_libraries_svr4 == NULL) | |
1039 | return -1; | |
1040 | ||
1041 | return the_target->qxfer_libraries_svr4 (annex, readbuf, writebuf, offset, len); | |
1042 | } | |
1043 | ||
d08aafef PA |
1044 | /* Handle qXfer:osadata:read. */ |
1045 | ||
1046 | static int | |
1047 | handle_qxfer_osdata (const char *annex, | |
1048 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1049 | ULONGEST offset, LONGEST len) | |
1050 | { | |
1051 | if (the_target->qxfer_osdata == NULL || writebuf != NULL) | |
1052 | return -2; | |
1053 | ||
1054 | return (*the_target->qxfer_osdata) (annex, readbuf, NULL, offset, len); | |
1055 | } | |
1056 | ||
1057 | /* Handle qXfer:siginfo:read and qXfer:siginfo:write. */ | |
1058 | ||
1059 | static int | |
1060 | handle_qxfer_siginfo (const char *annex, | |
1061 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1062 | ULONGEST offset, LONGEST len) | |
1063 | { | |
1064 | if (the_target->qxfer_siginfo == NULL) | |
1065 | return -2; | |
1066 | ||
1067 | if (annex[0] != '\0' || !target_running ()) | |
1068 | return -1; | |
1069 | ||
1070 | return (*the_target->qxfer_siginfo) (annex, readbuf, writebuf, offset, len); | |
1071 | } | |
1072 | ||
1073 | /* Handle qXfer:spu:read and qXfer:spu:write. */ | |
1074 | ||
1075 | static int | |
1076 | handle_qxfer_spu (const char *annex, | |
1077 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1078 | ULONGEST offset, LONGEST len) | |
1079 | { | |
1080 | if (the_target->qxfer_spu == NULL) | |
1081 | return -2; | |
1082 | ||
1083 | if (!target_running ()) | |
1084 | return -1; | |
1085 | ||
1086 | return (*the_target->qxfer_spu) (annex, readbuf, writebuf, offset, len); | |
1087 | } | |
1088 | ||
1089 | /* Handle qXfer:statictrace:read. */ | |
1090 | ||
1091 | static int | |
1092 | handle_qxfer_statictrace (const char *annex, | |
1093 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1094 | ULONGEST offset, LONGEST len) | |
1095 | { | |
1096 | ULONGEST nbytes; | |
1097 | ||
1098 | if (writebuf != NULL) | |
1099 | return -2; | |
1100 | ||
1101 | if (annex[0] != '\0' || !target_running () || current_traceframe == -1) | |
1102 | return -1; | |
1103 | ||
1104 | if (traceframe_read_sdata (current_traceframe, offset, | |
1105 | readbuf, len, &nbytes)) | |
1106 | return -1; | |
1107 | return nbytes; | |
1108 | } | |
1109 | ||
1110 | /* Helper for handle_qxfer_threads. */ | |
1111 | ||
dc146f7c | 1112 | static void |
d08aafef | 1113 | handle_qxfer_threads_proper (struct buffer *buffer) |
dc146f7c VP |
1114 | { |
1115 | struct inferior_list_entry *thread; | |
1116 | ||
1117 | buffer_grow_str (buffer, "<threads>\n"); | |
1118 | ||
1119 | for (thread = all_threads.head; thread; thread = thread->next) | |
1120 | { | |
1121 | ptid_t ptid = thread_to_gdb_id ((struct thread_info *)thread); | |
1122 | char ptid_s[100]; | |
1123 | int core = -1; | |
1124 | char core_s[21]; | |
1125 | ||
1126 | write_ptid (ptid_s, ptid); | |
1127 | ||
1128 | if (the_target->core_of_thread) | |
1129 | core = (*the_target->core_of_thread) (ptid); | |
1130 | ||
1131 | if (core != -1) | |
1132 | { | |
1133 | sprintf (core_s, "%d", core); | |
1134 | buffer_xml_printf (buffer, "<thread id=\"%s\" core=\"%s\"/>\n", | |
1135 | ptid_s, core_s); | |
1136 | } | |
1137 | else | |
1138 | { | |
1139 | buffer_xml_printf (buffer, "<thread id=\"%s\"/>\n", | |
1140 | ptid_s); | |
1141 | } | |
1142 | } | |
1143 | ||
1144 | buffer_grow_str0 (buffer, "</threads>\n"); | |
1145 | } | |
1146 | ||
d08aafef PA |
1147 | /* Handle qXfer:threads:read. */ |
1148 | ||
dc146f7c | 1149 | static int |
d08aafef PA |
1150 | handle_qxfer_threads (const char *annex, |
1151 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1152 | ULONGEST offset, LONGEST len) | |
dc146f7c VP |
1153 | { |
1154 | static char *result = 0; | |
1155 | static unsigned int result_length = 0; | |
1156 | ||
d08aafef PA |
1157 | if (writebuf != NULL) |
1158 | return -2; | |
1159 | ||
1160 | if (!target_running () || annex[0] != '\0') | |
1161 | return -1; | |
dc146f7c VP |
1162 | |
1163 | if (offset == 0) | |
1164 | { | |
1165 | struct buffer buffer; | |
1166 | /* When asked for data at offset 0, generate everything and store into | |
1167 | 'result'. Successive reads will be served off 'result'. */ | |
1168 | if (result) | |
1169 | free (result); | |
1170 | ||
1171 | buffer_init (&buffer); | |
1172 | ||
d08aafef | 1173 | handle_qxfer_threads_proper (&buffer); |
dc146f7c VP |
1174 | |
1175 | result = buffer_finish (&buffer); | |
1176 | result_length = strlen (result); | |
1177 | buffer_free (&buffer); | |
1178 | } | |
1179 | ||
1180 | if (offset >= result_length) | |
1181 | { | |
1182 | /* We're out of data. */ | |
1183 | free (result); | |
1184 | result = NULL; | |
1185 | result_length = 0; | |
1186 | return 0; | |
1187 | } | |
1188 | ||
d08aafef PA |
1189 | if (len > result_length - offset) |
1190 | len = result_length - offset; | |
1191 | ||
1192 | memcpy (readbuf, result + offset, len); | |
1193 | ||
1194 | return len; | |
1195 | } | |
1196 | ||
b3b9301e PA |
1197 | /* Handle qXfer:traceframe-info:read. */ |
1198 | ||
1199 | static int | |
1200 | handle_qxfer_traceframe_info (const char *annex, | |
1201 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1202 | ULONGEST offset, LONGEST len) | |
1203 | { | |
1204 | static char *result = 0; | |
1205 | static unsigned int result_length = 0; | |
1206 | ||
1207 | if (writebuf != NULL) | |
1208 | return -2; | |
1209 | ||
1210 | if (!target_running () || annex[0] != '\0' || current_traceframe == -1) | |
1211 | return -1; | |
1212 | ||
1213 | if (offset == 0) | |
1214 | { | |
1215 | struct buffer buffer; | |
1216 | ||
1217 | /* When asked for data at offset 0, generate everything and | |
1218 | store into 'result'. Successive reads will be served off | |
1219 | 'result'. */ | |
1220 | free (result); | |
1221 | ||
1222 | buffer_init (&buffer); | |
1223 | ||
1224 | traceframe_read_info (current_traceframe, &buffer); | |
1225 | ||
1226 | result = buffer_finish (&buffer); | |
1227 | result_length = strlen (result); | |
1228 | buffer_free (&buffer); | |
1229 | } | |
1230 | ||
1231 | if (offset >= result_length) | |
1232 | { | |
1233 | /* We're out of data. */ | |
1234 | free (result); | |
1235 | result = NULL; | |
1236 | result_length = 0; | |
1237 | return 0; | |
1238 | } | |
1239 | ||
1240 | if (len > result_length - offset) | |
1241 | len = result_length - offset; | |
1242 | ||
1243 | memcpy (readbuf, result + offset, len); | |
1244 | return len; | |
1245 | } | |
1246 | ||
78d85199 YQ |
1247 | /* Handle qXfer:fdpic:read. */ |
1248 | ||
1249 | static int | |
1250 | handle_qxfer_fdpic (const char *annex, gdb_byte *readbuf, | |
1251 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1252 | { | |
1253 | if (the_target->read_loadmap == NULL) | |
1254 | return -2; | |
1255 | ||
1256 | if (!target_running ()) | |
1257 | return -1; | |
1258 | ||
1259 | return (*the_target->read_loadmap) (annex, offset, readbuf, len); | |
1260 | } | |
1261 | ||
d08aafef PA |
1262 | static const struct qxfer qxfer_packets[] = |
1263 | { | |
1264 | { "auxv", handle_qxfer_auxv }, | |
78d85199 | 1265 | { "fdpic", handle_qxfer_fdpic}, |
d08aafef PA |
1266 | { "features", handle_qxfer_features }, |
1267 | { "libraries", handle_qxfer_libraries }, | |
2268b414 | 1268 | { "libraries-svr4", handle_qxfer_libraries_svr4 }, |
d08aafef PA |
1269 | { "osdata", handle_qxfer_osdata }, |
1270 | { "siginfo", handle_qxfer_siginfo }, | |
1271 | { "spu", handle_qxfer_spu }, | |
1272 | { "statictrace", handle_qxfer_statictrace }, | |
1273 | { "threads", handle_qxfer_threads }, | |
b3b9301e | 1274 | { "traceframe-info", handle_qxfer_traceframe_info }, |
d08aafef PA |
1275 | }; |
1276 | ||
1277 | static int | |
1278 | handle_qxfer (char *own_buf, int packet_len, int *new_packet_len_p) | |
1279 | { | |
1280 | int i; | |
1281 | char *object; | |
1282 | char *rw; | |
1283 | char *annex; | |
1284 | char *offset; | |
1285 | ||
1286 | if (strncmp (own_buf, "qXfer:", 6) != 0) | |
1287 | return 0; | |
1288 | ||
1289 | /* Grab the object, r/w and annex. */ | |
1290 | if (decode_xfer (own_buf + 6, &object, &rw, &annex, &offset) < 0) | |
1291 | { | |
1292 | write_enn (own_buf); | |
1293 | return 1; | |
1294 | } | |
1295 | ||
1296 | for (i = 0; | |
1297 | i < sizeof (qxfer_packets) / sizeof (qxfer_packets[0]); | |
1298 | i++) | |
1299 | { | |
1300 | const struct qxfer *q = &qxfer_packets[i]; | |
1301 | ||
1302 | if (strcmp (object, q->object) == 0) | |
1303 | { | |
1304 | if (strcmp (rw, "read") == 0) | |
1305 | { | |
1306 | unsigned char *data; | |
1307 | int n; | |
1308 | CORE_ADDR ofs; | |
1309 | unsigned int len; | |
1310 | ||
1311 | /* Grab the offset and length. */ | |
1312 | if (decode_xfer_read (offset, &ofs, &len) < 0) | |
1313 | { | |
1314 | write_enn (own_buf); | |
1315 | return 1; | |
1316 | } | |
1317 | ||
1318 | /* Read one extra byte, as an indicator of whether there is | |
1319 | more. */ | |
1320 | if (len > PBUFSIZ - 2) | |
1321 | len = PBUFSIZ - 2; | |
1322 | data = malloc (len + 1); | |
1323 | if (data == NULL) | |
1324 | { | |
1325 | write_enn (own_buf); | |
1326 | return 1; | |
1327 | } | |
1328 | n = (*q->xfer) (annex, data, NULL, ofs, len + 1); | |
1329 | if (n == -2) | |
1330 | { | |
1331 | free (data); | |
1332 | return 0; | |
1333 | } | |
1334 | else if (n < 0) | |
1335 | write_enn (own_buf); | |
1336 | else if (n > len) | |
1337 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); | |
1338 | else | |
1339 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); | |
1340 | ||
1341 | free (data); | |
1342 | return 1; | |
1343 | } | |
1344 | else if (strcmp (rw, "write") == 0) | |
1345 | { | |
1346 | int n; | |
1347 | unsigned int len; | |
1348 | CORE_ADDR ofs; | |
1349 | unsigned char *data; | |
1350 | ||
1351 | strcpy (own_buf, "E00"); | |
1352 | data = malloc (packet_len - (offset - own_buf)); | |
1353 | if (data == NULL) | |
1354 | { | |
1355 | write_enn (own_buf); | |
1356 | return 1; | |
1357 | } | |
1358 | if (decode_xfer_write (offset, packet_len - (offset - own_buf), | |
1359 | &ofs, &len, data) < 0) | |
1360 | { | |
1361 | free (data); | |
1362 | write_enn (own_buf); | |
1363 | return 1; | |
1364 | } | |
1365 | ||
1366 | n = (*q->xfer) (annex, NULL, data, ofs, len); | |
1367 | if (n == -2) | |
1368 | { | |
1369 | free (data); | |
1370 | return 0; | |
1371 | } | |
1372 | else if (n < 0) | |
1373 | write_enn (own_buf); | |
1374 | else | |
1375 | sprintf (own_buf, "%x", n); | |
dc146f7c | 1376 | |
d08aafef PA |
1377 | free (data); |
1378 | return 1; | |
1379 | } | |
dc146f7c | 1380 | |
d08aafef PA |
1381 | return 0; |
1382 | } | |
1383 | } | |
dc146f7c | 1384 | |
d08aafef | 1385 | return 0; |
dc146f7c VP |
1386 | } |
1387 | ||
30ba68cb MS |
1388 | /* Table used by the crc32 function to calcuate the checksum. */ |
1389 | ||
1390 | static unsigned int crc32_table[256] = | |
1391 | {0, 0}; | |
1392 | ||
1393 | /* Compute 32 bit CRC from inferior memory. | |
1394 | ||
1395 | On success, return 32 bit CRC. | |
1396 | On failure, return (unsigned long long) -1. */ | |
1397 | ||
1398 | static unsigned long long | |
1399 | crc32 (CORE_ADDR base, int len, unsigned int crc) | |
1400 | { | |
1401 | if (!crc32_table[1]) | |
1402 | { | |
1403 | /* Initialize the CRC table and the decoding table. */ | |
1404 | int i, j; | |
1405 | unsigned int c; | |
1406 | ||
1407 | for (i = 0; i < 256; i++) | |
1408 | { | |
1409 | for (c = i << 24, j = 8; j > 0; --j) | |
1410 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
1411 | crc32_table[i] = c; | |
1412 | } | |
1413 | } | |
1414 | ||
1415 | while (len--) | |
1416 | { | |
1417 | unsigned char byte = 0; | |
1418 | ||
1419 | /* Return failure if memory read fails. */ | |
1420 | if (read_inferior_memory (base, &byte, 1) != 0) | |
1421 | return (unsigned long long) -1; | |
1422 | ||
1423 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ byte) & 255]; | |
1424 | base++; | |
1425 | } | |
1426 | return (unsigned long long) crc; | |
1427 | } | |
1428 | ||
ce3a066d | 1429 | /* Handle all of the extended 'q' packets. */ |
d08aafef | 1430 | |
ce3a066d | 1431 | void |
0e7f50da | 1432 | handle_query (char *own_buf, int packet_len, int *new_packet_len_p) |
ce3a066d | 1433 | { |
0d62e5e8 DJ |
1434 | static struct inferior_list_entry *thread_ptr; |
1435 | ||
bb63802a | 1436 | /* Reply the current thread id. */ |
db42f210 | 1437 | if (strcmp ("qC", own_buf) == 0 && !disable_packet_qC) |
bb63802a | 1438 | { |
95954743 | 1439 | ptid_t gdb_id; |
2d717e4f | 1440 | require_running (own_buf); |
bd99dc85 | 1441 | |
95954743 PA |
1442 | if (!ptid_equal (general_thread, null_ptid) |
1443 | && !ptid_equal (general_thread, minus_one_ptid)) | |
bd99dc85 PA |
1444 | gdb_id = general_thread; |
1445 | else | |
1446 | { | |
1447 | thread_ptr = all_threads.head; | |
1448 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
1449 | } | |
1450 | ||
95954743 PA |
1451 | sprintf (own_buf, "QC"); |
1452 | own_buf += 2; | |
4b812f4e | 1453 | write_ptid (own_buf, gdb_id); |
bb63802a UW |
1454 | return; |
1455 | } | |
1456 | ||
ce3a066d DJ |
1457 | if (strcmp ("qSymbol::", own_buf) == 0) |
1458 | { | |
d3bbe7a0 PA |
1459 | /* GDB is suggesting new symbols have been loaded. This may |
1460 | mean a new shared library has been detected as loaded, so | |
1461 | take the opportunity to check if breakpoints we think are | |
1462 | inserted, still are. Note that it isn't guaranteed that | |
1463 | we'll see this when a shared library is loaded, and nor will | |
1464 | we see this for unloads (although breakpoints in unloaded | |
1465 | libraries shouldn't trigger), as GDB may not find symbols for | |
1466 | the library at all. We also re-validate breakpoints when we | |
1467 | see a second GDB breakpoint for the same address, and or when | |
1468 | we access breakpoint shadows. */ | |
1469 | validate_breakpoints (); | |
1470 | ||
fa593d66 PA |
1471 | if (target_supports_tracepoints ()) |
1472 | tracepoint_look_up_symbols (); | |
1473 | ||
2d717e4f | 1474 | if (target_running () && the_target->look_up_symbols != NULL) |
2f2893d9 DJ |
1475 | (*the_target->look_up_symbols) (); |
1476 | ||
ce3a066d DJ |
1477 | strcpy (own_buf, "OK"); |
1478 | return; | |
1479 | } | |
1480 | ||
db42f210 | 1481 | if (!disable_packet_qfThreadInfo) |
0d62e5e8 | 1482 | { |
db42f210 | 1483 | if (strcmp ("qfThreadInfo", own_buf) == 0) |
0d62e5e8 | 1484 | { |
95954743 PA |
1485 | ptid_t gdb_id; |
1486 | ||
db42f210 PA |
1487 | require_running (own_buf); |
1488 | thread_ptr = all_threads.head; | |
95954743 PA |
1489 | |
1490 | *own_buf++ = 'm'; | |
1491 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
1492 | write_ptid (own_buf, gdb_id); | |
0d62e5e8 DJ |
1493 | thread_ptr = thread_ptr->next; |
1494 | return; | |
1495 | } | |
db42f210 PA |
1496 | |
1497 | if (strcmp ("qsThreadInfo", own_buf) == 0) | |
0d62e5e8 | 1498 | { |
95954743 PA |
1499 | ptid_t gdb_id; |
1500 | ||
db42f210 PA |
1501 | require_running (own_buf); |
1502 | if (thread_ptr != NULL) | |
1503 | { | |
95954743 PA |
1504 | *own_buf++ = 'm'; |
1505 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
1506 | write_ptid (own_buf, gdb_id); | |
db42f210 PA |
1507 | thread_ptr = thread_ptr->next; |
1508 | return; | |
1509 | } | |
1510 | else | |
1511 | { | |
1512 | sprintf (own_buf, "l"); | |
1513 | return; | |
1514 | } | |
0d62e5e8 DJ |
1515 | } |
1516 | } | |
aa691b87 | 1517 | |
52fb6437 NS |
1518 | if (the_target->read_offsets != NULL |
1519 | && strcmp ("qOffsets", own_buf) == 0) | |
1520 | { | |
1521 | CORE_ADDR text, data; | |
2d717e4f DJ |
1522 | |
1523 | require_running (own_buf); | |
52fb6437 NS |
1524 | if (the_target->read_offsets (&text, &data)) |
1525 | sprintf (own_buf, "Text=%lX;Data=%lX;Bss=%lX", | |
1526 | (long)text, (long)data, (long)data); | |
1527 | else | |
1528 | write_enn (own_buf); | |
1b3f6016 | 1529 | |
52fb6437 NS |
1530 | return; |
1531 | } | |
1532 | ||
be2a5f71 DJ |
1533 | /* Protocol features query. */ |
1534 | if (strncmp ("qSupported", own_buf, 10) == 0 | |
1535 | && (own_buf[10] == ':' || own_buf[10] == '\0')) | |
1536 | { | |
95954743 | 1537 | char *p = &own_buf[10]; |
fa593d66 | 1538 | int gdb_supports_qRelocInsn = 0; |
95954743 | 1539 | |
1570b33e L |
1540 | /* Start processing qSupported packet. */ |
1541 | target_process_qsupported (NULL); | |
1542 | ||
95954743 PA |
1543 | /* Process each feature being provided by GDB. The first |
1544 | feature will follow a ':', and latter features will follow | |
1545 | ';'. */ | |
1546 | if (*p == ':') | |
d149dd1d PA |
1547 | { |
1548 | char **qsupported = NULL; | |
1549 | int count = 0; | |
1550 | int i; | |
1551 | ||
1552 | /* Two passes, to avoid nested strtok calls in | |
1553 | target_process_qsupported. */ | |
1554 | for (p = strtok (p + 1, ";"); | |
1555 | p != NULL; | |
1556 | p = strtok (NULL, ";")) | |
1557 | { | |
1558 | count++; | |
1559 | qsupported = xrealloc (qsupported, count * sizeof (char *)); | |
1560 | qsupported[count - 1] = xstrdup (p); | |
1561 | } | |
1562 | ||
1563 | for (i = 0; i < count; i++) | |
1564 | { | |
1565 | p = qsupported[i]; | |
1566 | if (strcmp (p, "multiprocess+") == 0) | |
1567 | { | |
1568 | /* GDB supports and wants multi-process support if | |
1569 | possible. */ | |
1570 | if (target_supports_multi_process ()) | |
1571 | multi_process = 1; | |
1572 | } | |
fa593d66 PA |
1573 | else if (strcmp (p, "qRelocInsn+") == 0) |
1574 | { | |
1575 | /* GDB supports relocate instruction requests. */ | |
1576 | gdb_supports_qRelocInsn = 1; | |
1577 | } | |
d149dd1d PA |
1578 | else |
1579 | target_process_qsupported (p); | |
1580 | ||
1581 | free (p); | |
1582 | } | |
1583 | ||
1584 | free (qsupported); | |
1585 | } | |
95954743 | 1586 | |
89be2091 | 1587 | sprintf (own_buf, "PacketSize=%x;QPassSignals+", PBUFSIZ - 1); |
0876f84a | 1588 | |
2268b414 JK |
1589 | if (the_target->qxfer_libraries_svr4 != NULL) |
1590 | strcat (own_buf, ";qXfer:libraries-svr4:read+"); | |
1591 | else | |
1592 | { | |
1593 | /* We do not have any hook to indicate whether the non-SVR4 target | |
1594 | backend supports qXfer:libraries:read, so always report it. */ | |
1595 | strcat (own_buf, ";qXfer:libraries:read+"); | |
1596 | } | |
255e7678 | 1597 | |
0876f84a | 1598 | if (the_target->read_auxv != NULL) |
9f2e1e63 | 1599 | strcat (own_buf, ";qXfer:auxv:read+"); |
2d717e4f | 1600 | |
0e7f50da UW |
1601 | if (the_target->qxfer_spu != NULL) |
1602 | strcat (own_buf, ";qXfer:spu:read+;qXfer:spu:write+"); | |
0876f84a | 1603 | |
4aa995e1 PA |
1604 | if (the_target->qxfer_siginfo != NULL) |
1605 | strcat (own_buf, ";qXfer:siginfo:read+;qXfer:siginfo:write+"); | |
1606 | ||
78d85199 YQ |
1607 | if (the_target->read_loadmap != NULL) |
1608 | strcat (own_buf, ";qXfer:fdpic:read+"); | |
1609 | ||
221c031f UW |
1610 | /* We always report qXfer:features:read, as targets may |
1611 | install XML files on a subsequent call to arch_setup. | |
1612 | If we reported to GDB on startup that we don't support | |
1613 | qXfer:feature:read at all, we will never be re-queried. */ | |
1614 | strcat (own_buf, ";qXfer:features:read+"); | |
23181151 | 1615 | |
a6f3e723 SL |
1616 | if (transport_is_reliable) |
1617 | strcat (own_buf, ";QStartNoAckMode+"); | |
07e059b5 VP |
1618 | |
1619 | if (the_target->qxfer_osdata != NULL) | |
1b3f6016 | 1620 | strcat (own_buf, ";qXfer:osdata:read+"); |
07e059b5 | 1621 | |
cf8fd78b PA |
1622 | if (target_supports_multi_process ()) |
1623 | strcat (own_buf, ";multiprocess+"); | |
95954743 | 1624 | |
bd99dc85 PA |
1625 | if (target_supports_non_stop ()) |
1626 | strcat (own_buf, ";QNonStop+"); | |
1627 | ||
03583c20 UW |
1628 | if (target_supports_disable_randomization ()) |
1629 | strcat (own_buf, ";QDisableRandomization+"); | |
1630 | ||
dc146f7c VP |
1631 | strcat (own_buf, ";qXfer:threads:read+"); |
1632 | ||
219f2f23 PA |
1633 | if (target_supports_tracepoints ()) |
1634 | { | |
1635 | strcat (own_buf, ";ConditionalTracepoints+"); | |
1636 | strcat (own_buf, ";TraceStateVariables+"); | |
1637 | strcat (own_buf, ";TracepointSource+"); | |
8336d594 | 1638 | strcat (own_buf, ";DisconnectedTracing+"); |
fa593d66 PA |
1639 | if (gdb_supports_qRelocInsn && target_supports_fast_tracepoints ()) |
1640 | strcat (own_buf, ";FastTracepoints+"); | |
0fb4aa4b | 1641 | strcat (own_buf, ";StaticTracepoints+"); |
1e4d1764 | 1642 | strcat (own_buf, ";InstallInTrace+"); |
0fb4aa4b | 1643 | strcat (own_buf, ";qXfer:statictrace:read+"); |
b3b9301e | 1644 | strcat (own_buf, ";qXfer:traceframe-info:read+"); |
d248b706 | 1645 | strcat (own_buf, ";EnableDisableTracepoints+"); |
3065dfb6 | 1646 | strcat (own_buf, ";tracenz+"); |
219f2f23 PA |
1647 | } |
1648 | ||
9f3a5c85 LM |
1649 | /* Support target-side breakpoint conditions. */ |
1650 | strcat (own_buf, ";ConditionalBreakpoints+"); | |
1651 | ||
d1feda86 YQ |
1652 | if (target_supports_agent ()) |
1653 | strcat (own_buf, ";QAgent+"); | |
1654 | ||
be2a5f71 DJ |
1655 | return; |
1656 | } | |
1657 | ||
dae5f5cf DJ |
1658 | /* Thread-local storage support. */ |
1659 | if (the_target->get_tls_address != NULL | |
1660 | && strncmp ("qGetTLSAddr:", own_buf, 12) == 0) | |
1661 | { | |
1662 | char *p = own_buf + 12; | |
5b1c542e | 1663 | CORE_ADDR parts[2], address = 0; |
dae5f5cf | 1664 | int i, err; |
95954743 | 1665 | ptid_t ptid = null_ptid; |
dae5f5cf | 1666 | |
2d717e4f DJ |
1667 | require_running (own_buf); |
1668 | ||
dae5f5cf DJ |
1669 | for (i = 0; i < 3; i++) |
1670 | { | |
1671 | char *p2; | |
1672 | int len; | |
1673 | ||
1674 | if (p == NULL) | |
1675 | break; | |
1676 | ||
1677 | p2 = strchr (p, ','); | |
1678 | if (p2) | |
1679 | { | |
1680 | len = p2 - p; | |
1681 | p2++; | |
1682 | } | |
1683 | else | |
1684 | { | |
1685 | len = strlen (p); | |
1686 | p2 = NULL; | |
1687 | } | |
1688 | ||
5b1c542e | 1689 | if (i == 0) |
95954743 | 1690 | ptid = read_ptid (p, NULL); |
5b1c542e PA |
1691 | else |
1692 | decode_address (&parts[i - 1], p, len); | |
dae5f5cf DJ |
1693 | p = p2; |
1694 | } | |
1695 | ||
1696 | if (p != NULL || i < 3) | |
1697 | err = 1; | |
1698 | else | |
1699 | { | |
e09875d4 | 1700 | struct thread_info *thread = find_thread_ptid (ptid); |
dae5f5cf DJ |
1701 | |
1702 | if (thread == NULL) | |
1703 | err = 2; | |
1704 | else | |
5b1c542e | 1705 | err = the_target->get_tls_address (thread, parts[0], parts[1], |
dae5f5cf DJ |
1706 | &address); |
1707 | } | |
1708 | ||
1709 | if (err == 0) | |
1710 | { | |
c6f46ca0 | 1711 | strcpy (own_buf, paddress(address)); |
dae5f5cf DJ |
1712 | return; |
1713 | } | |
1714 | else if (err > 0) | |
1715 | { | |
1716 | write_enn (own_buf); | |
1717 | return; | |
1718 | } | |
1719 | ||
1720 | /* Otherwise, pretend we do not understand this packet. */ | |
1721 | } | |
1722 | ||
711e434b PM |
1723 | /* Windows OS Thread Information Block address support. */ |
1724 | if (the_target->get_tib_address != NULL | |
1725 | && strncmp ("qGetTIBAddr:", own_buf, 12) == 0) | |
1726 | { | |
1727 | char *annex; | |
1728 | int n; | |
1729 | CORE_ADDR tlb; | |
1730 | ptid_t ptid = read_ptid (own_buf + 12, &annex); | |
1731 | ||
1732 | n = (*the_target->get_tib_address) (ptid, &tlb); | |
1733 | if (n == 1) | |
1734 | { | |
c6f46ca0 | 1735 | strcpy (own_buf, paddress(tlb)); |
711e434b PM |
1736 | return; |
1737 | } | |
1738 | else if (n == 0) | |
1739 | { | |
1740 | write_enn (own_buf); | |
1741 | return; | |
1742 | } | |
1743 | return; | |
1744 | } | |
1745 | ||
c74d0ad8 DJ |
1746 | /* Handle "monitor" commands. */ |
1747 | if (strncmp ("qRcmd,", own_buf, 6) == 0) | |
1748 | { | |
aef93bd7 | 1749 | char *mon = malloc (PBUFSIZ); |
c74d0ad8 DJ |
1750 | int len = strlen (own_buf + 6); |
1751 | ||
aef93bd7 DE |
1752 | if (mon == NULL) |
1753 | { | |
1754 | write_enn (own_buf); | |
1755 | return; | |
1756 | } | |
1757 | ||
d41b6bb4 | 1758 | if ((len % 2) != 0 || unhexify (mon, own_buf + 6, len / 2) != len / 2) |
c74d0ad8 DJ |
1759 | { |
1760 | write_enn (own_buf); | |
1761 | free (mon); | |
1762 | return; | |
1763 | } | |
1764 | mon[len / 2] = '\0'; | |
1765 | ||
1766 | write_ok (own_buf); | |
1767 | ||
cdbfd419 PP |
1768 | if (the_target->handle_monitor_command == NULL |
1769 | || (*the_target->handle_monitor_command) (mon) == 0) | |
1770 | /* Default processing. */ | |
d73f2619 | 1771 | handle_monitor_command (mon, own_buf); |
c74d0ad8 DJ |
1772 | |
1773 | free (mon); | |
1774 | return; | |
1775 | } | |
1776 | ||
493e2a69 MS |
1777 | if (strncmp ("qSearch:memory:", own_buf, |
1778 | sizeof ("qSearch:memory:") - 1) == 0) | |
08388c79 DE |
1779 | { |
1780 | require_running (own_buf); | |
1781 | handle_search_memory (own_buf, packet_len); | |
1782 | return; | |
1783 | } | |
1784 | ||
95954743 PA |
1785 | if (strcmp (own_buf, "qAttached") == 0 |
1786 | || strncmp (own_buf, "qAttached:", sizeof ("qAttached:") - 1) == 0) | |
0b16c5cf | 1787 | { |
95954743 PA |
1788 | struct process_info *process; |
1789 | ||
1790 | if (own_buf[sizeof ("qAttached") - 1]) | |
1791 | { | |
1792 | int pid = strtoul (own_buf + sizeof ("qAttached:") - 1, NULL, 16); | |
1793 | process = (struct process_info *) | |
1794 | find_inferior_id (&all_processes, pid_to_ptid (pid)); | |
1795 | } | |
1796 | else | |
1797 | { | |
1798 | require_running (own_buf); | |
1799 | process = current_process (); | |
1800 | } | |
1801 | ||
1802 | if (process == NULL) | |
1803 | { | |
1804 | write_enn (own_buf); | |
1805 | return; | |
1806 | } | |
1807 | ||
1808 | strcpy (own_buf, process->attached ? "1" : "0"); | |
0b16c5cf PA |
1809 | return; |
1810 | } | |
1811 | ||
30ba68cb MS |
1812 | if (strncmp ("qCRC:", own_buf, 5) == 0) |
1813 | { | |
1814 | /* CRC check (compare-section). */ | |
1815 | char *comma; | |
1816 | CORE_ADDR base; | |
1817 | int len; | |
1818 | unsigned long long crc; | |
1819 | ||
1820 | require_running (own_buf); | |
2280c721 | 1821 | base = strtoul (own_buf + 5, &comma, 16); |
30ba68cb MS |
1822 | if (*comma++ != ',') |
1823 | { | |
1824 | write_enn (own_buf); | |
1825 | return; | |
1826 | } | |
1827 | len = strtoul (comma, NULL, 16); | |
1828 | crc = crc32 (base, len, 0xffffffff); | |
1829 | /* Check for memory failure. */ | |
1830 | if (crc == (unsigned long long) -1) | |
1831 | { | |
1832 | write_enn (own_buf); | |
1833 | return; | |
1834 | } | |
1835 | sprintf (own_buf, "C%lx", (unsigned long) crc); | |
1836 | return; | |
1837 | } | |
1838 | ||
d08aafef PA |
1839 | if (handle_qxfer (own_buf, packet_len, new_packet_len_p)) |
1840 | return; | |
1841 | ||
219f2f23 PA |
1842 | if (target_supports_tracepoints () && handle_tracepoint_query (own_buf)) |
1843 | return; | |
1844 | ||
ce3a066d DJ |
1845 | /* Otherwise we didn't know what packet it was. Say we didn't |
1846 | understand it. */ | |
1847 | own_buf[0] = 0; | |
1848 | } | |
1849 | ||
ce1a5b52 PA |
1850 | static void gdb_wants_all_threads_stopped (void); |
1851 | ||
64386c31 DJ |
1852 | /* Parse vCont packets. */ |
1853 | void | |
5b1c542e | 1854 | handle_v_cont (char *own_buf) |
64386c31 DJ |
1855 | { |
1856 | char *p, *q; | |
1857 | int n = 0, i = 0; | |
2bd7c093 | 1858 | struct thread_resume *resume_info; |
95954743 | 1859 | struct thread_resume default_action = {{0}}; |
64386c31 DJ |
1860 | |
1861 | /* Count the number of semicolons in the packet. There should be one | |
1862 | for every action. */ | |
1863 | p = &own_buf[5]; | |
1864 | while (p) | |
1865 | { | |
1866 | n++; | |
1867 | p++; | |
1868 | p = strchr (p, ';'); | |
1869 | } | |
2bd7c093 PA |
1870 | |
1871 | resume_info = malloc (n * sizeof (resume_info[0])); | |
aef93bd7 DE |
1872 | if (resume_info == NULL) |
1873 | goto err; | |
64386c31 | 1874 | |
64386c31 | 1875 | p = &own_buf[5]; |
64386c31 DJ |
1876 | while (*p) |
1877 | { | |
1878 | p++; | |
1879 | ||
64386c31 | 1880 | if (p[0] == 's' || p[0] == 'S') |
bd99dc85 | 1881 | resume_info[i].kind = resume_step; |
64386c31 | 1882 | else if (p[0] == 'c' || p[0] == 'C') |
bd99dc85 PA |
1883 | resume_info[i].kind = resume_continue; |
1884 | else if (p[0] == 't') | |
1885 | resume_info[i].kind = resume_stop; | |
64386c31 DJ |
1886 | else |
1887 | goto err; | |
1888 | ||
1889 | if (p[0] == 'S' || p[0] == 'C') | |
1890 | { | |
1891 | int sig; | |
1892 | sig = strtol (p + 1, &q, 16); | |
1893 | if (p == q) | |
1894 | goto err; | |
1895 | p = q; | |
1896 | ||
1897 | if (!target_signal_to_host_p (sig)) | |
1898 | goto err; | |
1899 | resume_info[i].sig = target_signal_to_host (sig); | |
1900 | } | |
1901 | else | |
1902 | { | |
1903 | resume_info[i].sig = 0; | |
1904 | p = p + 1; | |
1905 | } | |
1906 | ||
1907 | if (p[0] == 0) | |
1908 | { | |
95954743 | 1909 | resume_info[i].thread = minus_one_ptid; |
64386c31 DJ |
1910 | default_action = resume_info[i]; |
1911 | ||
1912 | /* Note: we don't increment i here, we'll overwrite this entry | |
1913 | the next time through. */ | |
1914 | } | |
1915 | else if (p[0] == ':') | |
1916 | { | |
95954743 | 1917 | ptid_t ptid = read_ptid (p + 1, &q); |
a06660f7 | 1918 | |
64386c31 DJ |
1919 | if (p == q) |
1920 | goto err; | |
1921 | p = q; | |
1922 | if (p[0] != ';' && p[0] != 0) | |
1923 | goto err; | |
1924 | ||
95954743 | 1925 | resume_info[i].thread = ptid; |
a06660f7 | 1926 | |
64386c31 DJ |
1927 | i++; |
1928 | } | |
1929 | } | |
1930 | ||
2bd7c093 PA |
1931 | if (i < n) |
1932 | resume_info[i] = default_action; | |
64386c31 DJ |
1933 | |
1934 | /* Still used in occasional places in the backend. */ | |
bd99dc85 | 1935 | if (n == 1 |
95954743 | 1936 | && !ptid_equal (resume_info[0].thread, minus_one_ptid) |
bd99dc85 | 1937 | && resume_info[0].kind != resume_stop) |
64386c31 DJ |
1938 | cont_thread = resume_info[0].thread; |
1939 | else | |
95954743 | 1940 | cont_thread = minus_one_ptid; |
dc3f8883 | 1941 | set_desired_inferior (0); |
64386c31 | 1942 | |
bd99dc85 PA |
1943 | if (!non_stop) |
1944 | enable_async_io (); | |
1945 | ||
2bd7c093 | 1946 | (*the_target->resume) (resume_info, n); |
64386c31 DJ |
1947 | |
1948 | free (resume_info); | |
1949 | ||
bd99dc85 PA |
1950 | if (non_stop) |
1951 | write_ok (own_buf); | |
1952 | else | |
1953 | { | |
95954743 | 1954 | last_ptid = mywait (minus_one_ptid, &last_status, 0, 1); |
ce1a5b52 | 1955 | |
d20a8ad9 PA |
1956 | if (last_status.kind != TARGET_WAITKIND_EXITED |
1957 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
1958 | current_inferior->last_status = last_status; | |
1959 | ||
ce1a5b52 PA |
1960 | /* From the client's perspective, all-stop mode always stops all |
1961 | threads implicitly (and the target backend has already done | |
1962 | so by now). Tag all threads as "want-stopped", so we don't | |
1963 | resume them implicitly without the client telling us to. */ | |
1964 | gdb_wants_all_threads_stopped (); | |
bd99dc85 PA |
1965 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
1966 | disable_async_io (); | |
6bd31874 JB |
1967 | |
1968 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
1969 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
1970 | mourn_inferior (find_process_pid (ptid_get_pid (last_ptid))); | |
bd99dc85 | 1971 | } |
64386c31 DJ |
1972 | return; |
1973 | ||
1974 | err: | |
255e7678 | 1975 | write_enn (own_buf); |
64386c31 DJ |
1976 | free (resume_info); |
1977 | return; | |
1978 | } | |
1979 | ||
2d717e4f DJ |
1980 | /* Attach to a new program. Return 1 if successful, 0 if failure. */ |
1981 | int | |
5b1c542e | 1982 | handle_v_attach (char *own_buf) |
2d717e4f DJ |
1983 | { |
1984 | int pid; | |
1985 | ||
1986 | pid = strtol (own_buf + 8, NULL, 16); | |
5b1c542e | 1987 | if (pid != 0 && attach_inferior (pid) == 0) |
2d717e4f | 1988 | { |
aeba519e PA |
1989 | /* Don't report shared library events after attaching, even if |
1990 | some libraries are preloaded. GDB will always poll the | |
1991 | library list. Avoids the "stopped by shared library event" | |
1992 | notice on the GDB side. */ | |
1993 | dlls_changed = 0; | |
bd99dc85 PA |
1994 | |
1995 | if (non_stop) | |
1996 | { | |
1997 | /* In non-stop, we don't send a resume reply. Stop events | |
1998 | will follow up using the normal notification | |
1999 | mechanism. */ | |
2000 | write_ok (own_buf); | |
2001 | } | |
2002 | else | |
2003 | prepare_resume_reply (own_buf, last_ptid, &last_status); | |
2004 | ||
2d717e4f DJ |
2005 | return 1; |
2006 | } | |
2007 | else | |
2008 | { | |
2009 | write_enn (own_buf); | |
2010 | return 0; | |
2011 | } | |
2012 | } | |
2013 | ||
2014 | /* Run a new program. Return 1 if successful, 0 if failure. */ | |
2015 | static int | |
5b1c542e | 2016 | handle_v_run (char *own_buf) |
2d717e4f | 2017 | { |
aef93bd7 | 2018 | char *p, *next_p, **new_argv; |
2d717e4f DJ |
2019 | int i, new_argc; |
2020 | ||
2021 | new_argc = 0; | |
2022 | for (p = own_buf + strlen ("vRun;"); p && *p; p = strchr (p, ';')) | |
2023 | { | |
2024 | p++; | |
2025 | new_argc++; | |
2026 | } | |
2027 | ||
aef93bd7 DE |
2028 | new_argv = calloc (new_argc + 2, sizeof (char *)); |
2029 | if (new_argv == NULL) | |
2030 | { | |
2031 | write_enn (own_buf); | |
2032 | return 0; | |
2033 | } | |
2034 | ||
2d717e4f DJ |
2035 | i = 0; |
2036 | for (p = own_buf + strlen ("vRun;"); *p; p = next_p) | |
2037 | { | |
2038 | next_p = strchr (p, ';'); | |
2039 | if (next_p == NULL) | |
2040 | next_p = p + strlen (p); | |
2041 | ||
2042 | if (i == 0 && p == next_p) | |
2043 | new_argv[i] = NULL; | |
2044 | else | |
2045 | { | |
aef93bd7 | 2046 | /* FIXME: Fail request if out of memory instead of dying. */ |
bca929d3 | 2047 | new_argv[i] = xmalloc (1 + (next_p - p) / 2); |
2d717e4f DJ |
2048 | unhexify (new_argv[i], p, (next_p - p) / 2); |
2049 | new_argv[i][(next_p - p) / 2] = '\0'; | |
2050 | } | |
2051 | ||
2052 | if (*next_p) | |
2053 | next_p++; | |
2054 | i++; | |
2055 | } | |
2056 | new_argv[i] = NULL; | |
2057 | ||
2058 | if (new_argv[0] == NULL) | |
2059 | { | |
f142445f DJ |
2060 | /* GDB didn't specify a program to run. Use the program from the |
2061 | last run with the new argument list. */ | |
9b710a42 | 2062 | |
2d717e4f DJ |
2063 | if (program_argv == NULL) |
2064 | { | |
2065 | write_enn (own_buf); | |
b2c04452 | 2066 | freeargv (new_argv); |
2d717e4f DJ |
2067 | return 0; |
2068 | } | |
2069 | ||
aef93bd7 DE |
2070 | new_argv[0] = strdup (program_argv[0]); |
2071 | if (new_argv[0] == NULL) | |
2072 | { | |
aef93bd7 | 2073 | write_enn (own_buf); |
b2c04452 | 2074 | freeargv (new_argv); |
aef93bd7 | 2075 | return 0; |
1b3f6016 | 2076 | } |
2d717e4f | 2077 | } |
f142445f | 2078 | |
aef93bd7 DE |
2079 | /* Free the old argv and install the new one. */ |
2080 | freeargv (program_argv); | |
f142445f | 2081 | program_argv = new_argv; |
2d717e4f | 2082 | |
5b1c542e PA |
2083 | start_inferior (program_argv); |
2084 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
2d717e4f | 2085 | { |
5b1c542e | 2086 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
bd99dc85 PA |
2087 | |
2088 | /* In non-stop, sending a resume reply doesn't set the general | |
2089 | thread, but GDB assumes a vRun sets it (this is so GDB can | |
2090 | query which is the main thread of the new inferior. */ | |
2091 | if (non_stop) | |
2092 | general_thread = last_ptid; | |
2093 | ||
2d717e4f DJ |
2094 | return 1; |
2095 | } | |
2096 | else | |
2097 | { | |
2098 | write_enn (own_buf); | |
2099 | return 0; | |
2100 | } | |
2101 | } | |
2102 | ||
95954743 PA |
2103 | /* Kill process. Return 1 if successful, 0 if failure. */ |
2104 | int | |
2105 | handle_v_kill (char *own_buf) | |
2106 | { | |
2107 | int pid; | |
2108 | char *p = &own_buf[6]; | |
0f54c268 PM |
2109 | if (multi_process) |
2110 | pid = strtol (p, NULL, 16); | |
2111 | else | |
2112 | pid = signal_pid; | |
95954743 PA |
2113 | if (pid != 0 && kill_inferior (pid) == 0) |
2114 | { | |
2115 | last_status.kind = TARGET_WAITKIND_SIGNALLED; | |
2116 | last_status.value.sig = TARGET_SIGNAL_KILL; | |
2117 | last_ptid = pid_to_ptid (pid); | |
2118 | discard_queued_stop_replies (pid); | |
2119 | write_ok (own_buf); | |
2120 | return 1; | |
2121 | } | |
2122 | else | |
2123 | { | |
2124 | write_enn (own_buf); | |
2125 | return 0; | |
2126 | } | |
2127 | } | |
2128 | ||
bd99dc85 PA |
2129 | /* Handle a 'vStopped' packet. */ |
2130 | static void | |
2131 | handle_v_stopped (char *own_buf) | |
2132 | { | |
2133 | /* If we're waiting for GDB to acknowledge a pending stop reply, | |
2134 | consider that done. */ | |
2135 | if (notif_queue) | |
2136 | { | |
2137 | struct vstop_notif *head; | |
2138 | ||
2139 | if (remote_debug) | |
95954743 PA |
2140 | fprintf (stderr, "vStopped: acking %s\n", |
2141 | target_pid_to_str (notif_queue->ptid)); | |
bd99dc85 PA |
2142 | |
2143 | head = notif_queue; | |
2144 | notif_queue = notif_queue->next; | |
2145 | free (head); | |
2146 | } | |
2147 | ||
2148 | /* Push another stop reply, or if there are no more left, an OK. */ | |
2149 | send_next_stop_reply (own_buf); | |
2150 | } | |
2151 | ||
64386c31 DJ |
2152 | /* Handle all of the extended 'v' packets. */ |
2153 | void | |
5b1c542e | 2154 | handle_v_requests (char *own_buf, int packet_len, int *new_packet_len) |
64386c31 | 2155 | { |
db42f210 | 2156 | if (!disable_packet_vCont) |
64386c31 | 2157 | { |
db42f210 PA |
2158 | if (strncmp (own_buf, "vCont;", 6) == 0) |
2159 | { | |
2160 | require_running (own_buf); | |
5b1c542e | 2161 | handle_v_cont (own_buf); |
db42f210 PA |
2162 | return; |
2163 | } | |
64386c31 | 2164 | |
db42f210 PA |
2165 | if (strncmp (own_buf, "vCont?", 6) == 0) |
2166 | { | |
bd99dc85 | 2167 | strcpy (own_buf, "vCont;c;C;s;S;t"); |
db42f210 PA |
2168 | return; |
2169 | } | |
64386c31 DJ |
2170 | } |
2171 | ||
a6b151f1 DJ |
2172 | if (strncmp (own_buf, "vFile:", 6) == 0 |
2173 | && handle_vFile (own_buf, packet_len, new_packet_len)) | |
2174 | return; | |
2175 | ||
2d717e4f DJ |
2176 | if (strncmp (own_buf, "vAttach;", 8) == 0) |
2177 | { | |
901f9912 | 2178 | if ((!extended_protocol || !multi_process) && target_running ()) |
2d717e4f | 2179 | { |
fd96d250 PA |
2180 | fprintf (stderr, "Already debugging a process\n"); |
2181 | write_enn (own_buf); | |
2182 | return; | |
2d717e4f | 2183 | } |
5b1c542e | 2184 | handle_v_attach (own_buf); |
2d717e4f DJ |
2185 | return; |
2186 | } | |
2187 | ||
2188 | if (strncmp (own_buf, "vRun;", 5) == 0) | |
2189 | { | |
901f9912 | 2190 | if ((!extended_protocol || !multi_process) && target_running ()) |
2d717e4f | 2191 | { |
fd96d250 PA |
2192 | fprintf (stderr, "Already debugging a process\n"); |
2193 | write_enn (own_buf); | |
2194 | return; | |
2d717e4f | 2195 | } |
5b1c542e | 2196 | handle_v_run (own_buf); |
2d717e4f DJ |
2197 | return; |
2198 | } | |
2199 | ||
95954743 PA |
2200 | if (strncmp (own_buf, "vKill;", 6) == 0) |
2201 | { | |
2202 | if (!target_running ()) | |
2203 | { | |
2204 | fprintf (stderr, "No process to kill\n"); | |
2205 | write_enn (own_buf); | |
2206 | return; | |
2207 | } | |
2208 | handle_v_kill (own_buf); | |
2209 | return; | |
2210 | } | |
2211 | ||
bd99dc85 PA |
2212 | if (strncmp (own_buf, "vStopped", 8) == 0) |
2213 | { | |
2214 | handle_v_stopped (own_buf); | |
2215 | return; | |
2216 | } | |
2217 | ||
64386c31 DJ |
2218 | /* Otherwise we didn't know what packet it was. Say we didn't |
2219 | understand it. */ | |
2220 | own_buf[0] = 0; | |
2221 | return; | |
2222 | } | |
2223 | ||
bd99dc85 PA |
2224 | /* Resume inferior and wait for another event. In non-stop mode, |
2225 | don't really wait here, but return immediatelly to the event | |
2226 | loop. */ | |
1fd7cdc2 | 2227 | static void |
5b1c542e | 2228 | myresume (char *own_buf, int step, int sig) |
64386c31 DJ |
2229 | { |
2230 | struct thread_resume resume_info[2]; | |
2231 | int n = 0; | |
2bd7c093 | 2232 | int valid_cont_thread; |
a20d5e98 DJ |
2233 | |
2234 | set_desired_inferior (0); | |
64386c31 | 2235 | |
95954743 PA |
2236 | valid_cont_thread = (!ptid_equal (cont_thread, null_ptid) |
2237 | && !ptid_equal (cont_thread, minus_one_ptid)); | |
2bd7c093 PA |
2238 | |
2239 | if (step || sig || valid_cont_thread) | |
64386c31 DJ |
2240 | { |
2241 | resume_info[0].thread | |
2242 | = ((struct inferior_list_entry *) current_inferior)->id; | |
bd99dc85 PA |
2243 | if (step) |
2244 | resume_info[0].kind = resume_step; | |
2245 | else | |
2246 | resume_info[0].kind = resume_continue; | |
64386c31 | 2247 | resume_info[0].sig = sig; |
64386c31 DJ |
2248 | n++; |
2249 | } | |
2bd7c093 PA |
2250 | |
2251 | if (!valid_cont_thread) | |
2252 | { | |
95954743 | 2253 | resume_info[n].thread = minus_one_ptid; |
bd99dc85 | 2254 | resume_info[n].kind = resume_continue; |
2bd7c093 PA |
2255 | resume_info[n].sig = 0; |
2256 | n++; | |
2257 | } | |
64386c31 | 2258 | |
bd99dc85 PA |
2259 | if (!non_stop) |
2260 | enable_async_io (); | |
2261 | ||
2bd7c093 | 2262 | (*the_target->resume) (resume_info, n); |
bd99dc85 PA |
2263 | |
2264 | if (non_stop) | |
2265 | write_ok (own_buf); | |
2266 | else | |
2267 | { | |
95954743 | 2268 | last_ptid = mywait (minus_one_ptid, &last_status, 0, 1); |
d20a8ad9 PA |
2269 | |
2270 | if (last_status.kind != TARGET_WAITKIND_EXITED | |
2271 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
2272 | { | |
2273 | current_inferior->last_resume_kind = resume_stop; | |
2274 | current_inferior->last_status = last_status; | |
2275 | } | |
2276 | ||
bd99dc85 PA |
2277 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
2278 | disable_async_io (); | |
6bd31874 JB |
2279 | |
2280 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
2281 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2282 | mourn_inferior (find_process_pid (ptid_get_pid (last_ptid))); | |
bd99dc85 PA |
2283 | } |
2284 | } | |
2285 | ||
2286 | /* Callback for for_each_inferior. Make a new stop reply for each | |
2287 | stopped thread. */ | |
2288 | ||
95954743 PA |
2289 | static int |
2290 | queue_stop_reply_callback (struct inferior_list_entry *entry, void *arg) | |
bd99dc85 | 2291 | { |
8336d594 | 2292 | struct thread_info *thread = (struct thread_info *) entry; |
bd99dc85 | 2293 | |
8336d594 PA |
2294 | /* For now, assume targets that don't have this callback also don't |
2295 | manage the thread's last_status field. */ | |
2296 | if (the_target->thread_stopped == NULL) | |
95954743 | 2297 | { |
8336d594 PA |
2298 | /* Pass the last stop reply back to GDB, but don't notify |
2299 | yet. */ | |
2300 | queue_stop_reply (entry->id, &thread->last_status); | |
2301 | } | |
2302 | else | |
2303 | { | |
2304 | if (thread_stopped (thread)) | |
2305 | { | |
2306 | if (debug_threads) | |
493e2a69 MS |
2307 | fprintf (stderr, |
2308 | "Reporting thread %s as already stopped with %s\n", | |
8336d594 PA |
2309 | target_pid_to_str (entry->id), |
2310 | target_waitstatus_to_string (&thread->last_status)); | |
2311 | ||
d20a8ad9 PA |
2312 | gdb_assert (thread->last_status.kind != TARGET_WAITKIND_IGNORE); |
2313 | ||
8336d594 PA |
2314 | /* Pass the last stop reply back to GDB, but don't notify |
2315 | yet. */ | |
2316 | queue_stop_reply (entry->id, &thread->last_status); | |
2317 | } | |
95954743 PA |
2318 | } |
2319 | ||
2320 | return 0; | |
64386c31 DJ |
2321 | } |
2322 | ||
ce1a5b52 PA |
2323 | /* Set this inferior threads's state as "want-stopped". We won't |
2324 | resume this thread until the client gives us another action for | |
2325 | it. */ | |
8336d594 PA |
2326 | |
2327 | static void | |
2328 | gdb_wants_thread_stopped (struct inferior_list_entry *entry) | |
2329 | { | |
2330 | struct thread_info *thread = (struct thread_info *) entry; | |
2331 | ||
2332 | thread->last_resume_kind = resume_stop; | |
2333 | ||
2334 | if (thread->last_status.kind == TARGET_WAITKIND_IGNORE) | |
2335 | { | |
ce1a5b52 PA |
2336 | /* Most threads are stopped implicitly (all-stop); tag that with |
2337 | signal 0. */ | |
8336d594 PA |
2338 | thread->last_status.kind = TARGET_WAITKIND_STOPPED; |
2339 | thread->last_status.value.sig = TARGET_SIGNAL_0; | |
2340 | } | |
2341 | } | |
2342 | ||
2343 | /* Set all threads' states as "want-stopped". */ | |
2344 | ||
2345 | static void | |
2346 | gdb_wants_all_threads_stopped (void) | |
2347 | { | |
2348 | for_each_inferior (&all_threads, gdb_wants_thread_stopped); | |
2349 | } | |
2350 | ||
2351 | /* Clear the gdb_detached flag of every process. */ | |
2352 | ||
2353 | static void | |
2354 | gdb_reattached_process (struct inferior_list_entry *entry) | |
2355 | { | |
2356 | struct process_info *process = (struct process_info *) entry; | |
2357 | ||
2358 | process->gdb_detached = 0; | |
2359 | } | |
2360 | ||
5b1c542e PA |
2361 | /* Status handler for the '?' packet. */ |
2362 | ||
2363 | static void | |
2364 | handle_status (char *own_buf) | |
2365 | { | |
8336d594 PA |
2366 | /* GDB is connected, don't forward events to the target anymore. */ |
2367 | for_each_inferior (&all_processes, gdb_reattached_process); | |
bd99dc85 PA |
2368 | |
2369 | /* In non-stop mode, we must send a stop reply for each stopped | |
2370 | thread. In all-stop mode, just send one for the first stopped | |
2371 | thread we find. */ | |
2372 | ||
2373 | if (non_stop) | |
2374 | { | |
8336d594 PA |
2375 | discard_queued_stop_replies (-1); |
2376 | find_inferior (&all_threads, queue_stop_reply_callback, NULL); | |
bd99dc85 PA |
2377 | |
2378 | /* The first is sent immediatly. OK is sent if there is no | |
2379 | stopped thread, which is the same handling of the vStopped | |
2380 | packet (by design). */ | |
2381 | send_next_stop_reply (own_buf); | |
2382 | } | |
5b1c542e | 2383 | else |
bd99dc85 | 2384 | { |
7984d532 | 2385 | pause_all (0); |
fa593d66 | 2386 | stabilize_threads (); |
8336d594 PA |
2387 | gdb_wants_all_threads_stopped (); |
2388 | ||
bd99dc85 | 2389 | if (all_threads.head) |
8336d594 PA |
2390 | { |
2391 | struct target_waitstatus status; | |
2392 | ||
2393 | status.kind = TARGET_WAITKIND_STOPPED; | |
2394 | status.value.sig = TARGET_SIGNAL_TRAP; | |
2395 | prepare_resume_reply (own_buf, | |
2396 | all_threads.head->id, &status); | |
2397 | } | |
bd99dc85 PA |
2398 | else |
2399 | strcpy (own_buf, "W00"); | |
2400 | } | |
5b1c542e PA |
2401 | } |
2402 | ||
dd24457d DJ |
2403 | static void |
2404 | gdbserver_version (void) | |
2405 | { | |
c16158bc | 2406 | printf ("GNU gdbserver %s%s\n" |
67827812 | 2407 | "Copyright (C) 2012 Free Software Foundation, Inc.\n" |
493e2a69 MS |
2408 | "gdbserver is free software, covered by the " |
2409 | "GNU General Public License.\n" | |
dd24457d | 2410 | "This gdbserver was configured as \"%s\"\n", |
c16158bc | 2411 | PKGVERSION, version, host_name); |
dd24457d DJ |
2412 | } |
2413 | ||
0bc68c49 | 2414 | static void |
c16158bc | 2415 | gdbserver_usage (FILE *stream) |
0bc68c49 | 2416 | { |
c16158bc JM |
2417 | fprintf (stream, "Usage:\tgdbserver [OPTIONS] COMM PROG [ARGS ...]\n" |
2418 | "\tgdbserver [OPTIONS] --attach COMM PID\n" | |
2419 | "\tgdbserver [OPTIONS] --multi COMM\n" | |
2420 | "\n" | |
2421 | "COMM may either be a tty device (for serial debugging), or \n" | |
2422 | "HOST:PORT to listen for a TCP connection.\n" | |
2423 | "\n" | |
2424 | "Options:\n" | |
62709adf PA |
2425 | " --debug Enable general debugging output.\n" |
2426 | " --remote-debug Enable remote protocol debugging output.\n" | |
2427 | " --version Display version information and exit.\n" | |
03f2bd59 JK |
2428 | " --wrapper WRAPPER -- Run WRAPPER to start new programs.\n" |
2429 | " --once Exit after the first connection has " | |
2430 | "closed.\n"); | |
c16158bc JM |
2431 | if (REPORT_BUGS_TO[0] && stream == stdout) |
2432 | fprintf (stream, "Report bugs to \"%s\".\n", REPORT_BUGS_TO); | |
0bc68c49 DJ |
2433 | } |
2434 | ||
db42f210 PA |
2435 | static void |
2436 | gdbserver_show_disableable (FILE *stream) | |
2437 | { | |
2438 | fprintf (stream, "Disableable packets:\n" | |
2439 | " vCont \tAll vCont packets\n" | |
2440 | " qC \tQuerying the current thread\n" | |
2441 | " qfThreadInfo\tThread listing\n" | |
493e2a69 MS |
2442 | " Tthread \tPassing the thread specifier in the " |
2443 | "T stop reply packet\n" | |
db42f210 PA |
2444 | " threads \tAll of the above\n"); |
2445 | } | |
2446 | ||
2447 | ||
2d717e4f DJ |
2448 | #undef require_running |
2449 | #define require_running(BUF) \ | |
2450 | if (!target_running ()) \ | |
2451 | { \ | |
2452 | write_enn (BUF); \ | |
2453 | break; \ | |
2454 | } | |
2455 | ||
95954743 PA |
2456 | static int |
2457 | first_thread_of (struct inferior_list_entry *entry, void *args) | |
2458 | { | |
2459 | int pid = * (int *) args; | |
2460 | ||
2461 | if (ptid_get_pid (entry->id) == pid) | |
2462 | return 1; | |
2463 | ||
2464 | return 0; | |
2465 | } | |
2466 | ||
2467 | static void | |
2468 | kill_inferior_callback (struct inferior_list_entry *entry) | |
2469 | { | |
2470 | struct process_info *process = (struct process_info *) entry; | |
2471 | int pid = ptid_get_pid (process->head.id); | |
2472 | ||
2473 | kill_inferior (pid); | |
2474 | discard_queued_stop_replies (pid); | |
2475 | } | |
2476 | ||
9f767825 DE |
2477 | /* Callback for for_each_inferior to detach or kill the inferior, |
2478 | depending on whether we attached to it or not. | |
2479 | We inform the user whether we're detaching or killing the process | |
2480 | as this is only called when gdbserver is about to exit. */ | |
2481 | ||
95954743 PA |
2482 | static void |
2483 | detach_or_kill_inferior_callback (struct inferior_list_entry *entry) | |
2484 | { | |
2485 | struct process_info *process = (struct process_info *) entry; | |
2486 | int pid = ptid_get_pid (process->head.id); | |
2487 | ||
2488 | if (process->attached) | |
2489 | detach_inferior (pid); | |
2490 | else | |
2491 | kill_inferior (pid); | |
2492 | ||
2493 | discard_queued_stop_replies (pid); | |
2494 | } | |
2495 | ||
9f767825 DE |
2496 | /* for_each_inferior callback for detach_or_kill_for_exit to print |
2497 | the pids of started inferiors. */ | |
2498 | ||
2499 | static void | |
2500 | print_started_pid (struct inferior_list_entry *entry) | |
2501 | { | |
2502 | struct process_info *process = (struct process_info *) entry; | |
2503 | ||
2504 | if (! process->attached) | |
2505 | { | |
2506 | int pid = ptid_get_pid (process->head.id); | |
2507 | fprintf (stderr, " %d", pid); | |
2508 | } | |
2509 | } | |
2510 | ||
2511 | /* for_each_inferior callback for detach_or_kill_for_exit to print | |
2512 | the pids of attached inferiors. */ | |
2513 | ||
2514 | static void | |
2515 | print_attached_pid (struct inferior_list_entry *entry) | |
2516 | { | |
2517 | struct process_info *process = (struct process_info *) entry; | |
2518 | ||
2519 | if (process->attached) | |
2520 | { | |
2521 | int pid = ptid_get_pid (process->head.id); | |
2522 | fprintf (stderr, " %d", pid); | |
2523 | } | |
2524 | } | |
2525 | ||
2526 | /* Call this when exiting gdbserver with possible inferiors that need | |
2527 | to be killed or detached from. */ | |
2528 | ||
2529 | static void | |
2530 | detach_or_kill_for_exit (void) | |
2531 | { | |
2532 | /* First print a list of the inferiors we will be killing/detaching. | |
2533 | This is to assist the user, for example, in case the inferior unexpectedly | |
2534 | dies after we exit: did we screw up or did the inferior exit on its own? | |
2535 | Having this info will save some head-scratching. */ | |
2536 | ||
2537 | if (have_started_inferiors_p ()) | |
2538 | { | |
2539 | fprintf (stderr, "Killing process(es):"); | |
2540 | for_each_inferior (&all_processes, print_started_pid); | |
2541 | fprintf (stderr, "\n"); | |
2542 | } | |
2543 | if (have_attached_inferiors_p ()) | |
2544 | { | |
2545 | fprintf (stderr, "Detaching process(es):"); | |
2546 | for_each_inferior (&all_processes, print_attached_pid); | |
2547 | fprintf (stderr, "\n"); | |
2548 | } | |
2549 | ||
2550 | /* Now we can kill or detach the inferiors. */ | |
2551 | ||
2552 | for_each_inferior (&all_processes, detach_or_kill_inferior_callback); | |
2553 | } | |
2554 | ||
c906108c | 2555 | int |
da85418c | 2556 | main (int argc, char *argv[]) |
c906108c | 2557 | { |
0729219d DJ |
2558 | int bad_attach; |
2559 | int pid; | |
2d717e4f DJ |
2560 | char *arg_end, *port; |
2561 | char **next_arg = &argv[1]; | |
2562 | int multi_mode = 0; | |
2563 | int attach = 0; | |
2564 | int was_running; | |
c906108c | 2565 | |
2d717e4f | 2566 | while (*next_arg != NULL && **next_arg == '-') |
dd24457d | 2567 | { |
2d717e4f DJ |
2568 | if (strcmp (*next_arg, "--version") == 0) |
2569 | { | |
2570 | gdbserver_version (); | |
2571 | exit (0); | |
2572 | } | |
2573 | else if (strcmp (*next_arg, "--help") == 0) | |
2574 | { | |
c16158bc | 2575 | gdbserver_usage (stdout); |
2d717e4f DJ |
2576 | exit (0); |
2577 | } | |
2578 | else if (strcmp (*next_arg, "--attach") == 0) | |
2579 | attach = 1; | |
2580 | else if (strcmp (*next_arg, "--multi") == 0) | |
2581 | multi_mode = 1; | |
ccd213ac DJ |
2582 | else if (strcmp (*next_arg, "--wrapper") == 0) |
2583 | { | |
2584 | next_arg++; | |
2585 | ||
2586 | wrapper_argv = next_arg; | |
2587 | while (*next_arg != NULL && strcmp (*next_arg, "--") != 0) | |
2588 | next_arg++; | |
2589 | ||
2590 | if (next_arg == wrapper_argv || *next_arg == NULL) | |
2591 | { | |
c16158bc | 2592 | gdbserver_usage (stderr); |
ccd213ac DJ |
2593 | exit (1); |
2594 | } | |
2595 | ||
2596 | /* Consume the "--". */ | |
2597 | *next_arg = NULL; | |
2598 | } | |
2d717e4f DJ |
2599 | else if (strcmp (*next_arg, "--debug") == 0) |
2600 | debug_threads = 1; | |
62709adf PA |
2601 | else if (strcmp (*next_arg, "--remote-debug") == 0) |
2602 | remote_debug = 1; | |
db42f210 PA |
2603 | else if (strcmp (*next_arg, "--disable-packet") == 0) |
2604 | { | |
2605 | gdbserver_show_disableable (stdout); | |
2606 | exit (0); | |
2607 | } | |
2608 | else if (strncmp (*next_arg, | |
2609 | "--disable-packet=", | |
2610 | sizeof ("--disable-packet=") - 1) == 0) | |
2611 | { | |
2612 | char *packets, *tok; | |
2613 | ||
2614 | packets = *next_arg += sizeof ("--disable-packet=") - 1; | |
2615 | for (tok = strtok (packets, ","); | |
2616 | tok != NULL; | |
2617 | tok = strtok (NULL, ",")) | |
2618 | { | |
2619 | if (strcmp ("vCont", tok) == 0) | |
2620 | disable_packet_vCont = 1; | |
2621 | else if (strcmp ("Tthread", tok) == 0) | |
2622 | disable_packet_Tthread = 1; | |
2623 | else if (strcmp ("qC", tok) == 0) | |
2624 | disable_packet_qC = 1; | |
2625 | else if (strcmp ("qfThreadInfo", tok) == 0) | |
2626 | disable_packet_qfThreadInfo = 1; | |
2627 | else if (strcmp ("threads", tok) == 0) | |
2628 | { | |
2629 | disable_packet_vCont = 1; | |
2630 | disable_packet_Tthread = 1; | |
2631 | disable_packet_qC = 1; | |
2632 | disable_packet_qfThreadInfo = 1; | |
2633 | } | |
2634 | else | |
2635 | { | |
2636 | fprintf (stderr, "Don't know how to disable \"%s\".\n\n", | |
2637 | tok); | |
2638 | gdbserver_show_disableable (stderr); | |
2639 | exit (1); | |
2640 | } | |
2641 | } | |
2642 | } | |
e0f9f062 DE |
2643 | else if (strcmp (*next_arg, "-") == 0) |
2644 | { | |
2645 | /* "-" specifies a stdio connection and is a form of port | |
2646 | specification. */ | |
2647 | *next_arg = STDIO_CONNECTION_NAME; | |
2648 | break; | |
2649 | } | |
03583c20 UW |
2650 | else if (strcmp (*next_arg, "--disable-randomization") == 0) |
2651 | disable_randomization = 1; | |
2652 | else if (strcmp (*next_arg, "--no-disable-randomization") == 0) | |
2653 | disable_randomization = 0; | |
03f2bd59 JK |
2654 | else if (strcmp (*next_arg, "--once") == 0) |
2655 | run_once = 1; | |
2d717e4f DJ |
2656 | else |
2657 | { | |
2658 | fprintf (stderr, "Unknown argument: %s\n", *next_arg); | |
2659 | exit (1); | |
2660 | } | |
dd24457d | 2661 | |
2d717e4f DJ |
2662 | next_arg++; |
2663 | continue; | |
dd24457d DJ |
2664 | } |
2665 | ||
c5aa993b | 2666 | if (setjmp (toplevel)) |
c906108c | 2667 | { |
c5aa993b JM |
2668 | fprintf (stderr, "Exiting\n"); |
2669 | exit (1); | |
c906108c SS |
2670 | } |
2671 | ||
2d717e4f DJ |
2672 | port = *next_arg; |
2673 | next_arg++; | |
2674 | if (port == NULL || (!attach && !multi_mode && *next_arg == NULL)) | |
2675 | { | |
c16158bc | 2676 | gdbserver_usage (stderr); |
2d717e4f DJ |
2677 | exit (1); |
2678 | } | |
2679 | ||
e0f9f062 DE |
2680 | /* We need to know whether the remote connection is stdio before |
2681 | starting the inferior. Inferiors created in this scenario have | |
2682 | stdin,stdout redirected. So do this here before we call | |
2683 | start_inferior. */ | |
2684 | remote_prepare (port); | |
2685 | ||
0729219d DJ |
2686 | bad_attach = 0; |
2687 | pid = 0; | |
2d717e4f DJ |
2688 | |
2689 | /* --attach used to come after PORT, so allow it there for | |
2690 | compatibility. */ | |
2691 | if (*next_arg != NULL && strcmp (*next_arg, "--attach") == 0) | |
45b7b345 | 2692 | { |
2d717e4f DJ |
2693 | attach = 1; |
2694 | next_arg++; | |
45b7b345 DJ |
2695 | } |
2696 | ||
2d717e4f DJ |
2697 | if (attach |
2698 | && (*next_arg == NULL | |
2699 | || (*next_arg)[0] == '\0' | |
2700 | || (pid = strtoul (*next_arg, &arg_end, 0)) == 0 | |
2701 | || *arg_end != '\0' | |
2702 | || next_arg[1] != NULL)) | |
2703 | bad_attach = 1; | |
2704 | ||
2705 | if (bad_attach) | |
dd24457d | 2706 | { |
c16158bc | 2707 | gdbserver_usage (stderr); |
dd24457d DJ |
2708 | exit (1); |
2709 | } | |
c906108c | 2710 | |
a20d5e98 | 2711 | initialize_async_io (); |
4ce44c66 | 2712 | initialize_low (); |
219f2f23 PA |
2713 | if (target_supports_tracepoints ()) |
2714 | initialize_tracepoint (); | |
4ce44c66 | 2715 | |
bca929d3 DE |
2716 | own_buf = xmalloc (PBUFSIZ + 1); |
2717 | mem_buf = xmalloc (PBUFSIZ); | |
0a30fbc4 | 2718 | |
2d717e4f | 2719 | if (pid == 0 && *next_arg != NULL) |
45b7b345 | 2720 | { |
2d717e4f DJ |
2721 | int i, n; |
2722 | ||
2723 | n = argc - (next_arg - argv); | |
bca929d3 | 2724 | program_argv = xmalloc (sizeof (char *) * (n + 1)); |
2d717e4f | 2725 | for (i = 0; i < n; i++) |
bca929d3 | 2726 | program_argv[i] = xstrdup (next_arg[i]); |
2d717e4f DJ |
2727 | program_argv[i] = NULL; |
2728 | ||
45b7b345 | 2729 | /* Wait till we are at first instruction in program. */ |
5b1c542e | 2730 | start_inferior (program_argv); |
c906108c | 2731 | |
c588c53c MS |
2732 | /* We are now (hopefully) stopped at the first instruction of |
2733 | the target process. This assumes that the target process was | |
2734 | successfully created. */ | |
45b7b345 | 2735 | } |
2d717e4f DJ |
2736 | else if (pid != 0) |
2737 | { | |
5b1c542e | 2738 | if (attach_inferior (pid) == -1) |
2d717e4f DJ |
2739 | error ("Attaching not supported on this target"); |
2740 | ||
2741 | /* Otherwise succeeded. */ | |
2742 | } | |
45b7b345 DJ |
2743 | else |
2744 | { | |
5b1c542e PA |
2745 | last_status.kind = TARGET_WAITKIND_EXITED; |
2746 | last_status.value.integer = 0; | |
95954743 | 2747 | last_ptid = minus_one_ptid; |
45b7b345 | 2748 | } |
c906108c | 2749 | |
311de423 PA |
2750 | /* Don't report shared library events on the initial connection, |
2751 | even if some libraries are preloaded. Avoids the "stopped by | |
2752 | shared library event" notice on gdb side. */ | |
2753 | dlls_changed = 0; | |
2754 | ||
8264bb58 DJ |
2755 | if (setjmp (toplevel)) |
2756 | { | |
f128d5e9 PA |
2757 | /* If something fails and longjmps while detaching or killing |
2758 | inferiors, we'd end up here again, stuck in an infinite loop | |
2759 | trap. Be sure that if that happens, we exit immediately | |
2760 | instead. */ | |
01b17894 PA |
2761 | if (setjmp (toplevel) == 0) |
2762 | detach_or_kill_for_exit (); | |
2763 | else | |
2764 | fprintf (stderr, "Detach or kill failed. Exiting\n"); | |
8264bb58 DJ |
2765 | exit (1); |
2766 | } | |
2767 | ||
5b1c542e PA |
2768 | if (last_status.kind == TARGET_WAITKIND_EXITED |
2769 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2d717e4f DJ |
2770 | was_running = 0; |
2771 | else | |
2772 | was_running = 1; | |
2773 | ||
2774 | if (!was_running && !multi_mode) | |
c588c53c | 2775 | { |
2d717e4f | 2776 | fprintf (stderr, "No program to debug. GDBserver exiting.\n"); |
c588c53c MS |
2777 | exit (1); |
2778 | } | |
2779 | ||
c906108c SS |
2780 | while (1) |
2781 | { | |
a6f3e723 | 2782 | noack_mode = 0; |
95954743 | 2783 | multi_process = 0; |
8336d594 PA |
2784 | /* Be sure we're out of tfind mode. */ |
2785 | current_traceframe = -1; | |
bd99dc85 | 2786 | |
2d717e4f | 2787 | remote_open (port); |
c906108c | 2788 | |
2d717e4f DJ |
2789 | if (setjmp (toplevel) != 0) |
2790 | { | |
2791 | /* An error occurred. */ | |
2792 | if (response_needed) | |
2793 | { | |
2794 | write_enn (own_buf); | |
2795 | putpkt (own_buf); | |
2796 | } | |
2797 | } | |
2798 | ||
bd99dc85 | 2799 | /* Wait for events. This will return when all event sources are |
8336d594 | 2800 | removed from the event loop. */ |
bd99dc85 PA |
2801 | start_event_loop (); |
2802 | ||
2803 | /* If an exit was requested (using the "monitor exit" command), | |
2804 | terminate now. The only other way to get here is for | |
2805 | getpkt to fail; close the connection and reopen it at the | |
2806 | top of the loop. */ | |
2807 | ||
03f2bd59 | 2808 | if (exit_requested || run_once) |
c906108c | 2809 | { |
01b17894 PA |
2810 | /* If something fails and longjmps while detaching or |
2811 | killing inferiors, we'd end up here again, stuck in an | |
2812 | infinite loop trap. Be sure that if that happens, we | |
2813 | exit immediately instead. */ | |
2814 | if (setjmp (toplevel) == 0) | |
2815 | { | |
2816 | detach_or_kill_for_exit (); | |
2817 | exit (0); | |
2818 | } | |
2819 | else | |
2820 | { | |
2821 | fprintf (stderr, "Detach or kill failed. Exiting\n"); | |
2822 | exit (1); | |
2823 | } | |
bd99dc85 | 2824 | } |
8336d594 PA |
2825 | |
2826 | fprintf (stderr, | |
2827 | "Remote side has terminated connection. " | |
2828 | "GDBserver will reopen the connection.\n"); | |
2829 | ||
2830 | if (tracing) | |
2831 | { | |
2832 | if (disconnected_tracing) | |
2833 | { | |
2834 | /* Try to enable non-stop/async mode, so we we can both | |
2835 | wait for an async socket accept, and handle async | |
2836 | target events simultaneously. There's also no point | |
2837 | either in having the target always stop all threads, | |
2838 | when we're going to pass signals down without | |
2839 | informing GDB. */ | |
2840 | if (!non_stop) | |
2841 | { | |
2842 | if (start_non_stop (1)) | |
2843 | non_stop = 1; | |
2844 | ||
2845 | /* Detaching implicitly resumes all threads; simply | |
2846 | disconnecting does not. */ | |
2847 | } | |
2848 | } | |
2849 | else | |
2850 | { | |
2851 | fprintf (stderr, | |
2852 | "Disconnected tracing disabled; stopping trace run.\n"); | |
2853 | stop_tracing (); | |
2854 | } | |
2855 | } | |
bd99dc85 PA |
2856 | } |
2857 | } | |
01f9e8fa | 2858 | |
9f3a5c85 LM |
2859 | /* Process options coming from Z packets for *point at address |
2860 | POINT_ADDR. PACKET is the packet buffer. *PACKET is updated | |
2861 | to point to the first char after the last processed option. */ | |
2862 | ||
2863 | static void | |
2864 | process_point_options (CORE_ADDR point_addr, char **packet) | |
2865 | { | |
2866 | char *dataptr = *packet; | |
2867 | ||
2868 | /* Check if data has the correct format. */ | |
2869 | if (*dataptr != ';') | |
2870 | return; | |
2871 | ||
2872 | dataptr++; | |
2873 | ||
2874 | while (*dataptr) | |
2875 | { | |
2876 | switch (*dataptr) | |
2877 | { | |
2878 | case 'X': | |
2879 | /* Conditional expression. */ | |
2880 | fprintf (stderr, "Found breakpoint condition.\n"); | |
2881 | add_breakpoint_condition (point_addr, &dataptr); | |
2882 | break; | |
2883 | default: | |
2884 | /* Unrecognized token, just skip it. */ | |
2885 | fprintf (stderr, "Unknown token %c, ignoring.\n", | |
2886 | *dataptr); | |
2887 | } | |
2888 | ||
2889 | /* Skip tokens until we find one that we recognize. */ | |
2890 | while (*dataptr && *dataptr != 'X' && *dataptr != ';') | |
2891 | dataptr++; | |
2892 | } | |
2893 | *packet = dataptr; | |
2894 | } | |
2895 | ||
bd99dc85 PA |
2896 | /* Event loop callback that handles a serial event. The first byte in |
2897 | the serial buffer gets us here. We expect characters to arrive at | |
2898 | a brisk pace, so we read the rest of the packet with a blocking | |
2899 | getpkt call. */ | |
01f9e8fa | 2900 | |
8336d594 | 2901 | static int |
bd99dc85 PA |
2902 | process_serial_event (void) |
2903 | { | |
2904 | char ch; | |
2905 | int i = 0; | |
2906 | int signal; | |
2907 | unsigned int len; | |
764880b7 | 2908 | int res; |
bd99dc85 | 2909 | CORE_ADDR mem_addr; |
95954743 | 2910 | int pid; |
bd99dc85 PA |
2911 | unsigned char sig; |
2912 | int packet_len; | |
2913 | int new_packet_len = -1; | |
2914 | ||
2915 | /* Used to decide when gdbserver should exit in | |
2916 | multi-mode/remote. */ | |
2917 | static int have_ran = 0; | |
2918 | ||
2919 | if (!have_ran) | |
2920 | have_ran = target_running (); | |
2921 | ||
2922 | disable_async_io (); | |
2923 | ||
2924 | response_needed = 0; | |
2925 | packet_len = getpkt (own_buf); | |
2926 | if (packet_len <= 0) | |
2927 | { | |
bd99dc85 | 2928 | remote_close (); |
8336d594 PA |
2929 | /* Force an event loop break. */ |
2930 | return -1; | |
bd99dc85 PA |
2931 | } |
2932 | response_needed = 1; | |
2933 | ||
2934 | i = 0; | |
2935 | ch = own_buf[i++]; | |
2936 | switch (ch) | |
2937 | { | |
2938 | case 'q': | |
2939 | handle_query (own_buf, packet_len, &new_packet_len); | |
2940 | break; | |
2941 | case 'Q': | |
2942 | handle_general_set (own_buf); | |
2943 | break; | |
2944 | case 'D': | |
2945 | require_running (own_buf); | |
95954743 PA |
2946 | |
2947 | if (multi_process) | |
2948 | { | |
2949 | i++; /* skip ';' */ | |
2950 | pid = strtol (&own_buf[i], NULL, 16); | |
2951 | } | |
2952 | else | |
2953 | pid = | |
2954 | ptid_get_pid (((struct inferior_list_entry *) current_inferior)->id); | |
2955 | ||
8336d594 PA |
2956 | if (tracing && disconnected_tracing) |
2957 | { | |
2958 | struct thread_resume resume_info; | |
2959 | struct process_info *process = find_process_pid (pid); | |
2960 | ||
2961 | if (process == NULL) | |
2962 | { | |
2963 | write_enn (own_buf); | |
2964 | break; | |
2965 | } | |
2966 | ||
2967 | fprintf (stderr, | |
2968 | "Disconnected tracing in effect, " | |
2969 | "leaving gdbserver attached to the process\n"); | |
2970 | ||
2971 | /* Make sure we're in non-stop/async mode, so we we can both | |
2972 | wait for an async socket accept, and handle async target | |
2973 | events simultaneously. There's also no point either in | |
2974 | having the target stop all threads, when we're going to | |
2975 | pass signals down without informing GDB. */ | |
2976 | if (!non_stop) | |
2977 | { | |
2978 | if (debug_threads) | |
2979 | fprintf (stderr, "Forcing non-stop mode\n"); | |
2980 | ||
2981 | non_stop = 1; | |
2982 | start_non_stop (1); | |
2983 | } | |
2984 | ||
2985 | process->gdb_detached = 1; | |
2986 | ||
2987 | /* Detaching implicitly resumes all threads. */ | |
2988 | resume_info.thread = minus_one_ptid; | |
2989 | resume_info.kind = resume_continue; | |
2990 | resume_info.sig = 0; | |
2991 | (*the_target->resume) (&resume_info, 1); | |
2992 | ||
2993 | write_ok (own_buf); | |
2994 | break; /* from switch/case */ | |
2995 | } | |
2996 | ||
95954743 | 2997 | fprintf (stderr, "Detaching from process %d\n", pid); |
8336d594 | 2998 | stop_tracing (); |
95954743 | 2999 | if (detach_inferior (pid) != 0) |
bd99dc85 PA |
3000 | write_enn (own_buf); |
3001 | else | |
3002 | { | |
95954743 | 3003 | discard_queued_stop_replies (pid); |
bd99dc85 PA |
3004 | write_ok (own_buf); |
3005 | ||
3006 | if (extended_protocol) | |
c906108c | 3007 | { |
bd99dc85 PA |
3008 | /* Treat this like a normal program exit. */ |
3009 | last_status.kind = TARGET_WAITKIND_EXITED; | |
3010 | last_status.value.integer = 0; | |
95954743 | 3011 | last_ptid = pid_to_ptid (pid); |
2d717e4f | 3012 | |
bd99dc85 PA |
3013 | current_inferior = NULL; |
3014 | } | |
3015 | else | |
3016 | { | |
3017 | putpkt (own_buf); | |
3018 | remote_close (); | |
3019 | ||
3020 | /* If we are attached, then we can exit. Otherwise, we | |
3021 | need to hang around doing nothing, until the child is | |
3022 | gone. */ | |
71f55dd8 | 3023 | join_inferior (pid); |
bd99dc85 PA |
3024 | exit (0); |
3025 | } | |
3026 | } | |
3027 | break; | |
3028 | case '!': | |
3029 | extended_protocol = 1; | |
3030 | write_ok (own_buf); | |
3031 | break; | |
3032 | case '?': | |
3033 | handle_status (own_buf); | |
3034 | break; | |
3035 | case 'H': | |
3036 | if (own_buf[1] == 'c' || own_buf[1] == 'g' || own_buf[1] == 's') | |
3037 | { | |
95954743 PA |
3038 | ptid_t gdb_id, thread_id; |
3039 | int pid; | |
bd99dc85 PA |
3040 | |
3041 | require_running (own_buf); | |
95954743 PA |
3042 | |
3043 | gdb_id = read_ptid (&own_buf[2], NULL); | |
3044 | ||
3045 | pid = ptid_get_pid (gdb_id); | |
3046 | ||
3047 | if (ptid_equal (gdb_id, null_ptid) | |
3048 | || ptid_equal (gdb_id, minus_one_ptid)) | |
3049 | thread_id = null_ptid; | |
3050 | else if (pid != 0 | |
3051 | && ptid_equal (pid_to_ptid (pid), | |
3052 | gdb_id)) | |
3053 | { | |
3054 | struct thread_info *thread = | |
3055 | (struct thread_info *) find_inferior (&all_threads, | |
3056 | first_thread_of, | |
3057 | &pid); | |
3058 | if (!thread) | |
3059 | { | |
3060 | write_enn (own_buf); | |
3061 | break; | |
3062 | } | |
3063 | ||
3064 | thread_id = ((struct inferior_list_entry *)thread)->id; | |
3065 | } | |
bd99dc85 PA |
3066 | else |
3067 | { | |
3068 | thread_id = gdb_id_to_thread_id (gdb_id); | |
95954743 | 3069 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 3070 | { |
a06660f7 | 3071 | write_enn (own_buf); |
c906108c SS |
3072 | break; |
3073 | } | |
c906108c SS |
3074 | } |
3075 | ||
bd99dc85 | 3076 | if (own_buf[1] == 'g') |
c906108c | 3077 | { |
95954743 | 3078 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 3079 | { |
bd99dc85 PA |
3080 | /* GDB is telling us to choose any thread. Check if |
3081 | the currently selected thread is still valid. If | |
3082 | it is not, select the first available. */ | |
3083 | struct thread_info *thread = | |
3084 | (struct thread_info *) find_inferior_id (&all_threads, | |
3085 | general_thread); | |
3086 | if (thread == NULL) | |
3087 | thread_id = all_threads.head->id; | |
c906108c | 3088 | } |
bd99dc85 PA |
3089 | |
3090 | general_thread = thread_id; | |
3091 | set_desired_inferior (1); | |
c906108c | 3092 | } |
bd99dc85 PA |
3093 | else if (own_buf[1] == 'c') |
3094 | cont_thread = thread_id; | |
c906108c | 3095 | |
bd99dc85 PA |
3096 | write_ok (own_buf); |
3097 | } | |
3098 | else | |
3099 | { | |
3100 | /* Silently ignore it so that gdb can extend the protocol | |
3101 | without compatibility headaches. */ | |
3102 | own_buf[0] = '\0'; | |
2d717e4f | 3103 | } |
bd99dc85 PA |
3104 | break; |
3105 | case 'g': | |
219f2f23 PA |
3106 | require_running (own_buf); |
3107 | if (current_traceframe >= 0) | |
3108 | { | |
3109 | struct regcache *regcache = new_register_cache (); | |
3110 | ||
3111 | if (fetch_traceframe_registers (current_traceframe, | |
3112 | regcache, -1) == 0) | |
3113 | registers_to_string (regcache, own_buf); | |
3114 | else | |
3115 | write_enn (own_buf); | |
3116 | free_register_cache (regcache); | |
3117 | } | |
3118 | else | |
3119 | { | |
3120 | struct regcache *regcache; | |
3121 | ||
3122 | set_desired_inferior (1); | |
3123 | regcache = get_thread_regcache (current_inferior, 1); | |
3124 | registers_to_string (regcache, own_buf); | |
3125 | } | |
bd99dc85 PA |
3126 | break; |
3127 | case 'G': | |
219f2f23 PA |
3128 | require_running (own_buf); |
3129 | if (current_traceframe >= 0) | |
3130 | write_enn (own_buf); | |
3131 | else | |
3132 | { | |
442ea881 PA |
3133 | struct regcache *regcache; |
3134 | ||
442ea881 PA |
3135 | set_desired_inferior (1); |
3136 | regcache = get_thread_regcache (current_inferior, 1); | |
3137 | registers_from_string (regcache, &own_buf[1]); | |
3138 | write_ok (own_buf); | |
3139 | } | |
bd99dc85 PA |
3140 | break; |
3141 | case 'm': | |
3142 | require_running (own_buf); | |
3143 | decode_m_packet (&own_buf[1], &mem_addr, &len); | |
764880b7 PA |
3144 | res = gdb_read_memory (mem_addr, mem_buf, len); |
3145 | if (res < 0) | |
bd99dc85 | 3146 | write_enn (own_buf); |
764880b7 PA |
3147 | else |
3148 | convert_int_to_ascii (mem_buf, own_buf, res); | |
bd99dc85 PA |
3149 | break; |
3150 | case 'M': | |
3151 | require_running (own_buf); | |
fa593d66 | 3152 | decode_M_packet (&own_buf[1], &mem_addr, &len, &mem_buf); |
90d74c30 | 3153 | if (gdb_write_memory (mem_addr, mem_buf, len) == 0) |
bd99dc85 PA |
3154 | write_ok (own_buf); |
3155 | else | |
3156 | write_enn (own_buf); | |
3157 | break; | |
3158 | case 'X': | |
3159 | require_running (own_buf); | |
3160 | if (decode_X_packet (&own_buf[1], packet_len - 1, | |
fa593d66 | 3161 | &mem_addr, &len, &mem_buf) < 0 |
90d74c30 | 3162 | || gdb_write_memory (mem_addr, mem_buf, len) != 0) |
bd99dc85 PA |
3163 | write_enn (own_buf); |
3164 | else | |
3165 | write_ok (own_buf); | |
3166 | break; | |
3167 | case 'C': | |
3168 | require_running (own_buf); | |
3169 | convert_ascii_to_int (own_buf + 1, &sig, 1); | |
3170 | if (target_signal_to_host_p (sig)) | |
3171 | signal = target_signal_to_host (sig); | |
3172 | else | |
3173 | signal = 0; | |
3174 | myresume (own_buf, 0, signal); | |
3175 | break; | |
3176 | case 'S': | |
3177 | require_running (own_buf); | |
3178 | convert_ascii_to_int (own_buf + 1, &sig, 1); | |
3179 | if (target_signal_to_host_p (sig)) | |
3180 | signal = target_signal_to_host (sig); | |
3181 | else | |
3182 | signal = 0; | |
3183 | myresume (own_buf, 1, signal); | |
3184 | break; | |
3185 | case 'c': | |
3186 | require_running (own_buf); | |
3187 | signal = 0; | |
3188 | myresume (own_buf, 0, signal); | |
3189 | break; | |
3190 | case 's': | |
3191 | require_running (own_buf); | |
3192 | signal = 0; | |
3193 | myresume (own_buf, 1, signal); | |
3194 | break; | |
c6314022 AR |
3195 | case 'Z': /* insert_ ... */ |
3196 | /* Fallthrough. */ | |
3197 | case 'z': /* remove_ ... */ | |
bd99dc85 PA |
3198 | { |
3199 | char *lenptr; | |
3200 | char *dataptr; | |
3201 | CORE_ADDR addr = strtoul (&own_buf[3], &lenptr, 16); | |
3202 | int len = strtol (lenptr + 1, &dataptr, 16); | |
3203 | char type = own_buf[1]; | |
c6314022 | 3204 | int res; |
d993e290 | 3205 | const int insert = ch == 'Z'; |
c6314022 | 3206 | |
d993e290 PA |
3207 | /* Default to unrecognized/unsupported. */ |
3208 | res = 1; | |
3209 | switch (type) | |
3210 | { | |
3211 | case '0': /* software-breakpoint */ | |
3212 | case '1': /* hardware-breakpoint */ | |
3213 | case '2': /* write watchpoint */ | |
3214 | case '3': /* read watchpoint */ | |
3215 | case '4': /* access watchpoint */ | |
3216 | require_running (own_buf); | |
3217 | if (insert && the_target->insert_point != NULL) | |
9f3a5c85 LM |
3218 | { |
3219 | /* Insert the breakpoint. If it is already inserted, nothing | |
3220 | will take place. */ | |
3221 | res = (*the_target->insert_point) (type, addr, len); | |
3222 | ||
3223 | /* GDB may have sent us a list of *point parameters to be | |
3224 | evaluated on the target's side. Read such list here. If we | |
3225 | already have a list of parameters, GDB is telling us to drop | |
3226 | that list and use this one instead. */ | |
3227 | if (!res && (type == '0' || type == '1')) | |
3228 | { | |
3229 | /* Remove previous conditions. */ | |
3230 | clear_gdb_breakpoint_conditions (addr); | |
3231 | process_point_options (addr, &dataptr); | |
3232 | } | |
3233 | } | |
d993e290 PA |
3234 | else if (!insert && the_target->remove_point != NULL) |
3235 | res = (*the_target->remove_point) (type, addr, len); | |
3236 | break; | |
3237 | default: | |
3238 | break; | |
3239 | } | |
bd99dc85 | 3240 | |
c6314022 AR |
3241 | if (res == 0) |
3242 | write_ok (own_buf); | |
3243 | else if (res == 1) | |
3244 | /* Unsupported. */ | |
3245 | own_buf[0] = '\0'; | |
bd99dc85 | 3246 | else |
c6314022 | 3247 | write_enn (own_buf); |
bd99dc85 PA |
3248 | break; |
3249 | } | |
3250 | case 'k': | |
3251 | response_needed = 0; | |
3252 | if (!target_running ()) | |
95954743 PA |
3253 | /* The packet we received doesn't make sense - but we can't |
3254 | reply to it, either. */ | |
8336d594 | 3255 | return 0; |
c906108c | 3256 | |
95954743 PA |
3257 | fprintf (stderr, "Killing all inferiors\n"); |
3258 | for_each_inferior (&all_processes, kill_inferior_callback); | |
c906108c | 3259 | |
bd99dc85 PA |
3260 | /* When using the extended protocol, we wait with no program |
3261 | running. The traditional protocol will exit instead. */ | |
3262 | if (extended_protocol) | |
3263 | { | |
3264 | last_status.kind = TARGET_WAITKIND_EXITED; | |
3265 | last_status.value.sig = TARGET_SIGNAL_KILL; | |
8336d594 | 3266 | return 0; |
bd99dc85 PA |
3267 | } |
3268 | else | |
8336d594 PA |
3269 | exit (0); |
3270 | ||
bd99dc85 PA |
3271 | case 'T': |
3272 | { | |
95954743 | 3273 | ptid_t gdb_id, thread_id; |
bd99dc85 PA |
3274 | |
3275 | require_running (own_buf); | |
95954743 PA |
3276 | |
3277 | gdb_id = read_ptid (&own_buf[1], NULL); | |
bd99dc85 | 3278 | thread_id = gdb_id_to_thread_id (gdb_id); |
95954743 | 3279 | if (ptid_equal (thread_id, null_ptid)) |
bd99dc85 PA |
3280 | { |
3281 | write_enn (own_buf); | |
3282 | break; | |
3283 | } | |
3284 | ||
3285 | if (mythread_alive (thread_id)) | |
3286 | write_ok (own_buf); | |
3287 | else | |
3288 | write_enn (own_buf); | |
3289 | } | |
3290 | break; | |
3291 | case 'R': | |
3292 | response_needed = 0; | |
3293 | ||
3294 | /* Restarting the inferior is only supported in the extended | |
3295 | protocol. */ | |
3296 | if (extended_protocol) | |
3297 | { | |
3298 | if (target_running ()) | |
95954743 PA |
3299 | for_each_inferior (&all_processes, |
3300 | kill_inferior_callback); | |
bd99dc85 PA |
3301 | fprintf (stderr, "GDBserver restarting\n"); |
3302 | ||
3303 | /* Wait till we are at 1st instruction in prog. */ | |
3304 | if (program_argv != NULL) | |
3305 | start_inferior (program_argv); | |
3306 | else | |
3307 | { | |
3308 | last_status.kind = TARGET_WAITKIND_EXITED; | |
3309 | last_status.value.sig = TARGET_SIGNAL_KILL; | |
3310 | } | |
8336d594 | 3311 | return 0; |
c906108c SS |
3312 | } |
3313 | else | |
3314 | { | |
bd99dc85 PA |
3315 | /* It is a request we don't understand. Respond with an |
3316 | empty packet so that gdb knows that we don't support this | |
3317 | request. */ | |
3318 | own_buf[0] = '\0'; | |
3319 | break; | |
3320 | } | |
3321 | case 'v': | |
3322 | /* Extended (long) request. */ | |
3323 | handle_v_requests (own_buf, packet_len, &new_packet_len); | |
3324 | break; | |
3325 | ||
3326 | default: | |
3327 | /* It is a request we don't understand. Respond with an empty | |
3328 | packet so that gdb knows that we don't support this | |
3329 | request. */ | |
3330 | own_buf[0] = '\0'; | |
3331 | break; | |
3332 | } | |
3333 | ||
3334 | if (new_packet_len != -1) | |
3335 | putpkt_binary (own_buf, new_packet_len); | |
3336 | else | |
3337 | putpkt (own_buf); | |
3338 | ||
3339 | response_needed = 0; | |
3340 | ||
3341 | if (!extended_protocol && have_ran && !target_running ()) | |
3342 | { | |
3343 | /* In non-stop, defer exiting until GDB had a chance to query | |
3344 | the whole vStopped list (until it gets an OK). */ | |
3345 | if (!notif_queue) | |
3346 | { | |
3347 | fprintf (stderr, "GDBserver exiting\n"); | |
c906108c | 3348 | remote_close (); |
bd99dc85 | 3349 | exit (0); |
c906108c SS |
3350 | } |
3351 | } | |
8336d594 PA |
3352 | |
3353 | if (exit_requested) | |
3354 | return -1; | |
3355 | ||
3356 | return 0; | |
c906108c | 3357 | } |
bd99dc85 PA |
3358 | |
3359 | /* Event-loop callback for serial events. */ | |
3360 | ||
8336d594 | 3361 | int |
bd99dc85 PA |
3362 | handle_serial_event (int err, gdb_client_data client_data) |
3363 | { | |
3364 | if (debug_threads) | |
3365 | fprintf (stderr, "handling possible serial event\n"); | |
3366 | ||
3367 | /* Really handle it. */ | |
8336d594 PA |
3368 | if (process_serial_event () < 0) |
3369 | return -1; | |
bd99dc85 PA |
3370 | |
3371 | /* Be sure to not change the selected inferior behind GDB's back. | |
3372 | Important in the non-stop mode asynchronous protocol. */ | |
3373 | set_desired_inferior (1); | |
8336d594 PA |
3374 | |
3375 | return 0; | |
bd99dc85 PA |
3376 | } |
3377 | ||
3378 | /* Event-loop callback for target events. */ | |
3379 | ||
8336d594 | 3380 | int |
bd99dc85 PA |
3381 | handle_target_event (int err, gdb_client_data client_data) |
3382 | { | |
3383 | if (debug_threads) | |
3384 | fprintf (stderr, "handling possible target event\n"); | |
3385 | ||
95954743 PA |
3386 | last_ptid = mywait (minus_one_ptid, &last_status, |
3387 | TARGET_WNOHANG, 1); | |
bd99dc85 PA |
3388 | |
3389 | if (last_status.kind != TARGET_WAITKIND_IGNORE) | |
3390 | { | |
8336d594 PA |
3391 | int pid = ptid_get_pid (last_ptid); |
3392 | struct process_info *process = find_process_pid (pid); | |
3393 | int forward_event = !gdb_connected () || process->gdb_detached; | |
3394 | ||
3395 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
3396 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
f9e39928 PA |
3397 | { |
3398 | mark_breakpoints_out (process); | |
3399 | mourn_inferior (process); | |
3400 | } | |
ce1a5b52 | 3401 | else |
d20a8ad9 PA |
3402 | { |
3403 | /* We're reporting this thread as stopped. Update its | |
3404 | "want-stopped" state to what the client wants, until it | |
3405 | gets a new resume action. */ | |
3406 | current_inferior->last_resume_kind = resume_stop; | |
3407 | current_inferior->last_status = last_status; | |
3408 | } | |
8336d594 PA |
3409 | |
3410 | if (forward_event) | |
3411 | { | |
3412 | if (!target_running ()) | |
3413 | { | |
3414 | /* The last process exited. We're done. */ | |
3415 | exit (0); | |
3416 | } | |
3417 | ||
3418 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
3419 | { | |
3420 | /* A thread stopped with a signal, but gdb isn't | |
3421 | connected to handle it. Pass it down to the | |
3422 | inferior, as if it wasn't being traced. */ | |
3423 | struct thread_resume resume_info; | |
3424 | ||
3425 | if (debug_threads) | |
3426 | fprintf (stderr, | |
3427 | "GDB not connected; forwarding event %d for [%s]\n", | |
3428 | (int) last_status.kind, | |
3429 | target_pid_to_str (last_ptid)); | |
3430 | ||
3431 | resume_info.thread = last_ptid; | |
3432 | resume_info.kind = resume_continue; | |
30d50328 | 3433 | resume_info.sig = target_signal_to_host (last_status.value.sig); |
8336d594 PA |
3434 | (*the_target->resume) (&resume_info, 1); |
3435 | } | |
3436 | else if (debug_threads) | |
3437 | fprintf (stderr, "GDB not connected; ignoring event %d for [%s]\n", | |
3438 | (int) last_status.kind, | |
3439 | target_pid_to_str (last_ptid)); | |
3440 | } | |
3441 | else | |
3442 | { | |
3443 | /* Something interesting. Tell GDB about it. */ | |
3444 | push_event (last_ptid, &last_status); | |
3445 | } | |
bd99dc85 PA |
3446 | } |
3447 | ||
3448 | /* Be sure to not change the selected inferior behind GDB's back. | |
3449 | Important in the non-stop mode asynchronous protocol. */ | |
3450 | set_desired_inferior (1); | |
8336d594 PA |
3451 | |
3452 | return 0; | |
bd99dc85 | 3453 | } |