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 | 61 | int pass_signals[TARGET_SIGNAL_LAST]; |
9b224c5e PA |
62 | int program_signals[TARGET_SIGNAL_LAST]; |
63 | int program_signals_p; | |
89be2091 | 64 | |
c906108c | 65 | jmp_buf toplevel; |
c906108c | 66 | |
9b4b61c8 UW |
67 | const char *gdbserver_xmltarget; |
68 | ||
a9fa9f7d DJ |
69 | /* The PID of the originally created or attached inferior. Used to |
70 | send signals to the process when GDB sends us an asynchronous interrupt | |
71 | (user hitting Control-C in the client), and to wait for the child to exit | |
72 | when no longer debugging it. */ | |
73 | ||
a1928bad | 74 | unsigned long signal_pid; |
a9fa9f7d | 75 | |
290fadea RS |
76 | #ifdef SIGTTOU |
77 | /* A file descriptor for the controlling terminal. */ | |
78 | int terminal_fd; | |
79 | ||
80 | /* TERMINAL_FD's original foreground group. */ | |
81 | pid_t old_foreground_pgrp; | |
82 | ||
83 | /* Hand back terminal ownership to the original foreground group. */ | |
84 | ||
85 | static void | |
86 | restore_old_foreground_pgrp (void) | |
87 | { | |
88 | tcsetpgrp (terminal_fd, old_foreground_pgrp); | |
89 | } | |
90 | #endif | |
91 | ||
ec56be1b PA |
92 | /* Set if you want to disable optional thread related packets support |
93 | in gdbserver, for the sake of testing GDB against stubs that don't | |
94 | support them. */ | |
95 | int disable_packet_vCont; | |
96 | int disable_packet_Tthread; | |
97 | int disable_packet_qC; | |
98 | int disable_packet_qfThreadInfo; | |
99 | ||
5b1c542e PA |
100 | /* Last status reported to GDB. */ |
101 | static struct target_waitstatus last_status; | |
95954743 | 102 | static ptid_t last_ptid; |
5b1c542e | 103 | |
bd99dc85 PA |
104 | static char *own_buf; |
105 | static unsigned char *mem_buf; | |
106 | ||
107 | /* Structure holding information relative to a single stop reply. We | |
108 | keep a queue of these (really a singly-linked list) to push to GDB | |
109 | in non-stop mode. */ | |
110 | struct vstop_notif | |
111 | { | |
112 | /* Pointer to next in list. */ | |
113 | struct vstop_notif *next; | |
114 | ||
115 | /* Thread or process that got the event. */ | |
95954743 | 116 | ptid_t ptid; |
bd99dc85 PA |
117 | |
118 | /* Event info. */ | |
119 | struct target_waitstatus status; | |
120 | }; | |
121 | ||
122 | /* The pending stop replies list head. */ | |
123 | static struct vstop_notif *notif_queue = NULL; | |
124 | ||
125 | /* Put a stop reply to the stop reply queue. */ | |
126 | ||
127 | static void | |
95954743 | 128 | queue_stop_reply (ptid_t ptid, struct target_waitstatus *status) |
bd99dc85 PA |
129 | { |
130 | struct vstop_notif *new_notif; | |
131 | ||
cfdee94a | 132 | new_notif = xmalloc (sizeof (*new_notif)); |
bd99dc85 PA |
133 | new_notif->next = NULL; |
134 | new_notif->ptid = ptid; | |
135 | new_notif->status = *status; | |
136 | ||
137 | if (notif_queue) | |
138 | { | |
139 | struct vstop_notif *tail; | |
140 | for (tail = notif_queue; | |
141 | tail && tail->next; | |
142 | tail = tail->next) | |
143 | ; | |
144 | tail->next = new_notif; | |
145 | } | |
146 | else | |
147 | notif_queue = new_notif; | |
148 | ||
149 | if (remote_debug) | |
150 | { | |
151 | int i = 0; | |
152 | struct vstop_notif *n; | |
153 | ||
154 | for (n = notif_queue; n; n = n->next) | |
155 | i++; | |
156 | ||
157 | fprintf (stderr, "pending stop replies: %d\n", i); | |
158 | } | |
159 | } | |
160 | ||
161 | /* Place an event in the stop reply queue, and push a notification if | |
162 | we aren't sending one yet. */ | |
163 | ||
164 | void | |
95954743 | 165 | push_event (ptid_t ptid, struct target_waitstatus *status) |
bd99dc85 | 166 | { |
d20a8ad9 PA |
167 | gdb_assert (status->kind != TARGET_WAITKIND_IGNORE); |
168 | ||
bd99dc85 PA |
169 | queue_stop_reply (ptid, status); |
170 | ||
171 | /* If this is the first stop reply in the queue, then inform GDB | |
172 | about it, by sending a Stop notification. */ | |
173 | if (notif_queue->next == NULL) | |
174 | { | |
175 | char *p = own_buf; | |
176 | strcpy (p, "Stop:"); | |
177 | p += strlen (p); | |
178 | prepare_resume_reply (p, | |
179 | notif_queue->ptid, ¬if_queue->status); | |
180 | putpkt_notif (own_buf); | |
181 | } | |
182 | } | |
183 | ||
95954743 PA |
184 | /* Get rid of the currently pending stop replies for PID. If PID is |
185 | -1, then apply to all processes. */ | |
bd99dc85 PA |
186 | |
187 | static void | |
95954743 | 188 | discard_queued_stop_replies (int pid) |
bd99dc85 | 189 | { |
95954743 | 190 | struct vstop_notif *prev = NULL, *reply, *next; |
bd99dc85 | 191 | |
95954743 | 192 | for (reply = notif_queue; reply; reply = next) |
bd99dc85 | 193 | { |
95954743 PA |
194 | next = reply->next; |
195 | ||
196 | if (pid == -1 | |
197 | || ptid_get_pid (reply->ptid) == pid) | |
198 | { | |
199 | if (reply == notif_queue) | |
200 | notif_queue = next; | |
201 | else | |
202 | prev->next = reply->next; | |
bd99dc85 | 203 | |
95954743 PA |
204 | free (reply); |
205 | } | |
206 | else | |
207 | prev = reply; | |
bd99dc85 PA |
208 | } |
209 | } | |
210 | ||
211 | /* If there are more stop replies to push, push one now. */ | |
212 | ||
213 | static void | |
214 | send_next_stop_reply (char *own_buf) | |
215 | { | |
216 | if (notif_queue) | |
217 | prepare_resume_reply (own_buf, | |
218 | notif_queue->ptid, | |
219 | ¬if_queue->status); | |
220 | else | |
221 | write_ok (own_buf); | |
222 | } | |
223 | ||
2d717e4f DJ |
224 | static int |
225 | target_running (void) | |
226 | { | |
227 | return all_threads.head != NULL; | |
228 | } | |
229 | ||
fc620387 | 230 | static int |
5b1c542e | 231 | start_inferior (char **argv) |
c906108c | 232 | { |
ccd213ac | 233 | char **new_argv = argv; |
2d717e4f | 234 | |
ccd213ac DJ |
235 | if (wrapper_argv != NULL) |
236 | { | |
237 | int i, count = 1; | |
238 | ||
239 | for (i = 0; wrapper_argv[i] != NULL; i++) | |
240 | count++; | |
241 | for (i = 0; argv[i] != NULL; i++) | |
242 | count++; | |
243 | new_argv = alloca (sizeof (char *) * count); | |
244 | count = 0; | |
245 | for (i = 0; wrapper_argv[i] != NULL; i++) | |
246 | new_argv[count++] = wrapper_argv[i]; | |
247 | for (i = 0; argv[i] != NULL; i++) | |
248 | new_argv[count++] = argv[i]; | |
249 | new_argv[count] = NULL; | |
250 | } | |
251 | ||
65730243 DE |
252 | if (debug_threads) |
253 | { | |
254 | int i; | |
255 | for (i = 0; new_argv[i]; ++i) | |
256 | fprintf (stderr, "new_argv[%d] = \"%s\"\n", i, new_argv[i]); | |
257 | fflush (stderr); | |
258 | } | |
259 | ||
b80864fb | 260 | #ifdef SIGTTOU |
a9fa9f7d DJ |
261 | signal (SIGTTOU, SIG_DFL); |
262 | signal (SIGTTIN, SIG_DFL); | |
b80864fb | 263 | #endif |
a9fa9f7d | 264 | |
ccd213ac | 265 | signal_pid = create_inferior (new_argv[0], new_argv); |
0d62e5e8 | 266 | |
c588c53c MS |
267 | /* FIXME: we don't actually know at this point that the create |
268 | actually succeeded. We won't know that until we wait. */ | |
a1928bad | 269 | fprintf (stderr, "Process %s created; pid = %ld\n", argv[0], |
a9fa9f7d | 270 | signal_pid); |
b80864fb | 271 | fflush (stderr); |
a9fa9f7d | 272 | |
b80864fb | 273 | #ifdef SIGTTOU |
a9fa9f7d DJ |
274 | signal (SIGTTOU, SIG_IGN); |
275 | signal (SIGTTIN, SIG_IGN); | |
290fadea RS |
276 | terminal_fd = fileno (stderr); |
277 | old_foreground_pgrp = tcgetpgrp (terminal_fd); | |
278 | tcsetpgrp (terminal_fd, signal_pid); | |
279 | atexit (restore_old_foreground_pgrp); | |
b80864fb | 280 | #endif |
c906108c | 281 | |
ccd213ac DJ |
282 | if (wrapper_argv != NULL) |
283 | { | |
284 | struct thread_resume resume_info; | |
ccd213ac | 285 | |
95954743 | 286 | resume_info.thread = pid_to_ptid (signal_pid); |
bd99dc85 | 287 | resume_info.kind = resume_continue; |
ccd213ac | 288 | resume_info.sig = 0; |
ccd213ac | 289 | |
06db92f0 | 290 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
bd99dc85 | 291 | |
5b1c542e PA |
292 | if (last_status.kind != TARGET_WAITKIND_STOPPED) |
293 | return signal_pid; | |
ccd213ac DJ |
294 | |
295 | do | |
296 | { | |
2bd7c093 | 297 | (*the_target->resume) (&resume_info, 1); |
ccd213ac | 298 | |
06db92f0 | 299 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
5b1c542e PA |
300 | if (last_status.kind != TARGET_WAITKIND_STOPPED) |
301 | return signal_pid; | |
d20a8ad9 PA |
302 | |
303 | current_inferior->last_resume_kind = resume_stop; | |
304 | current_inferior->last_status = last_status; | |
ccd213ac | 305 | } |
5b1c542e | 306 | while (last_status.value.sig != TARGET_SIGNAL_TRAP); |
ccd213ac | 307 | |
d20a8ad9 PA |
308 | current_inferior->last_resume_kind = resume_stop; |
309 | current_inferior->last_status = last_status; | |
5b1c542e | 310 | return signal_pid; |
ccd213ac DJ |
311 | } |
312 | ||
5b1c542e PA |
313 | /* Wait till we are at 1st instruction in program, return new pid |
314 | (assuming success). */ | |
95954743 | 315 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
5b1c542e | 316 | |
d20a8ad9 PA |
317 | if (last_status.kind != TARGET_WAITKIND_EXITED |
318 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
319 | { | |
320 | current_inferior->last_resume_kind = resume_stop; | |
321 | current_inferior->last_status = last_status; | |
322 | } | |
323 | ||
5b1c542e | 324 | return signal_pid; |
c906108c SS |
325 | } |
326 | ||
45b7b345 | 327 | static int |
5b1c542e | 328 | attach_inferior (int pid) |
45b7b345 DJ |
329 | { |
330 | /* myattach should return -1 if attaching is unsupported, | |
331 | 0 if it succeeded, and call error() otherwise. */ | |
a9fa9f7d | 332 | |
45b7b345 DJ |
333 | if (myattach (pid) != 0) |
334 | return -1; | |
335 | ||
6910d122 | 336 | fprintf (stderr, "Attached; pid = %d\n", pid); |
b80864fb | 337 | fflush (stderr); |
6910d122 | 338 | |
a9fa9f7d DJ |
339 | /* FIXME - It may be that we should get the SIGNAL_PID from the |
340 | attach function, so that it can be the main thread instead of | |
341 | whichever we were told to attach to. */ | |
342 | signal_pid = pid; | |
343 | ||
7d5d4e98 PA |
344 | /* Clear this so the backend doesn't get confused, thinking |
345 | CONT_THREAD died, and it needs to resume all threads. */ | |
346 | cont_thread = null_ptid; | |
347 | ||
bd99dc85 PA |
348 | if (!non_stop) |
349 | { | |
95954743 | 350 | last_ptid = mywait (pid_to_ptid (pid), &last_status, 0, 0); |
bd99dc85 PA |
351 | |
352 | /* GDB knows to ignore the first SIGSTOP after attaching to a running | |
353 | process using the "attach" command, but this is different; it's | |
354 | just using "target remote". Pretend it's just starting up. */ | |
355 | if (last_status.kind == TARGET_WAITKIND_STOPPED | |
356 | && last_status.value.sig == TARGET_SIGNAL_STOP) | |
357 | last_status.value.sig = TARGET_SIGNAL_TRAP; | |
d20a8ad9 PA |
358 | |
359 | current_inferior->last_resume_kind = resume_stop; | |
360 | current_inferior->last_status = last_status; | |
bd99dc85 | 361 | } |
9db87ebd | 362 | |
45b7b345 DJ |
363 | return 0; |
364 | } | |
365 | ||
c906108c | 366 | extern int remote_debug; |
ce3a066d | 367 | |
0876f84a DJ |
368 | /* Decode a qXfer read request. Return 0 if everything looks OK, |
369 | or -1 otherwise. */ | |
370 | ||
371 | static int | |
d08aafef | 372 | decode_xfer_read (char *buf, CORE_ADDR *ofs, unsigned int *len) |
0876f84a | 373 | { |
d08aafef PA |
374 | /* After the read marker and annex, qXfer looks like a |
375 | traditional 'm' packet. */ | |
376 | decode_m_packet (buf, ofs, len); | |
377 | ||
378 | return 0; | |
379 | } | |
380 | ||
381 | static int | |
382 | decode_xfer (char *buf, char **object, char **rw, char **annex, char **offset) | |
383 | { | |
384 | /* Extract and NUL-terminate the object. */ | |
385 | *object = buf; | |
386 | while (*buf && *buf != ':') | |
387 | buf++; | |
388 | if (*buf == '\0') | |
389 | return -1; | |
390 | *buf++ = 0; | |
391 | ||
392 | /* Extract and NUL-terminate the read/write action. */ | |
393 | *rw = buf; | |
394 | while (*buf && *buf != ':') | |
395 | buf++; | |
396 | if (*buf == '\0') | |
397 | return -1; | |
398 | *buf++ = 0; | |
399 | ||
0876f84a DJ |
400 | /* Extract and NUL-terminate the annex. */ |
401 | *annex = buf; | |
402 | while (*buf && *buf != ':') | |
403 | buf++; | |
404 | if (*buf == '\0') | |
405 | return -1; | |
406 | *buf++ = 0; | |
407 | ||
d08aafef | 408 | *offset = buf; |
0876f84a DJ |
409 | return 0; |
410 | } | |
411 | ||
412 | /* Write the response to a successful qXfer read. Returns the | |
413 | length of the (binary) data stored in BUF, corresponding | |
414 | to as much of DATA/LEN as we could fit. IS_MORE controls | |
415 | the first character of the response. */ | |
416 | static int | |
23181151 | 417 | write_qxfer_response (char *buf, const void *data, int len, int is_more) |
0876f84a DJ |
418 | { |
419 | int out_len; | |
420 | ||
421 | if (is_more) | |
422 | buf[0] = 'm'; | |
423 | else | |
424 | buf[0] = 'l'; | |
425 | ||
426 | return remote_escape_output (data, len, (unsigned char *) buf + 1, &out_len, | |
427 | PBUFSIZ - 2) + 1; | |
428 | } | |
429 | ||
89be2091 | 430 | /* Handle all of the extended 'Q' packets. */ |
ae1ada35 DE |
431 | |
432 | static void | |
89be2091 DJ |
433 | handle_general_set (char *own_buf) |
434 | { | |
435 | if (strncmp ("QPassSignals:", own_buf, strlen ("QPassSignals:")) == 0) | |
436 | { | |
437 | int numsigs = (int) TARGET_SIGNAL_LAST, i; | |
438 | const char *p = own_buf + strlen ("QPassSignals:"); | |
439 | CORE_ADDR cursig; | |
440 | ||
441 | p = decode_address_to_semicolon (&cursig, p); | |
442 | for (i = 0; i < numsigs; i++) | |
443 | { | |
444 | if (i == cursig) | |
445 | { | |
446 | pass_signals[i] = 1; | |
447 | if (*p == '\0') | |
448 | /* Keep looping, to clear the remaining signals. */ | |
449 | cursig = -1; | |
450 | else | |
451 | p = decode_address_to_semicolon (&cursig, p); | |
452 | } | |
453 | else | |
454 | pass_signals[i] = 0; | |
455 | } | |
456 | strcpy (own_buf, "OK"); | |
457 | return; | |
458 | } | |
459 | ||
9b224c5e PA |
460 | if (strncmp ("QProgramSignals:", own_buf, strlen ("QProgramSignals:")) == 0) |
461 | { | |
462 | int numsigs = (int) TARGET_SIGNAL_LAST, i; | |
463 | const char *p = own_buf + strlen ("QProgramSignals:"); | |
464 | CORE_ADDR cursig; | |
465 | ||
466 | program_signals_p = 1; | |
467 | ||
468 | p = decode_address_to_semicolon (&cursig, p); | |
469 | for (i = 0; i < numsigs; i++) | |
470 | { | |
471 | if (i == cursig) | |
472 | { | |
473 | program_signals[i] = 1; | |
474 | if (*p == '\0') | |
475 | /* Keep looping, to clear the remaining signals. */ | |
476 | cursig = -1; | |
477 | else | |
478 | p = decode_address_to_semicolon (&cursig, p); | |
479 | } | |
480 | else | |
481 | program_signals[i] = 0; | |
482 | } | |
483 | strcpy (own_buf, "OK"); | |
484 | return; | |
485 | } | |
486 | ||
a6f3e723 SL |
487 | if (strcmp (own_buf, "QStartNoAckMode") == 0) |
488 | { | |
489 | if (remote_debug) | |
490 | { | |
491 | fprintf (stderr, "[noack mode enabled]\n"); | |
492 | fflush (stderr); | |
493 | } | |
494 | ||
495 | noack_mode = 1; | |
496 | write_ok (own_buf); | |
497 | return; | |
498 | } | |
499 | ||
bd99dc85 PA |
500 | if (strncmp (own_buf, "QNonStop:", 9) == 0) |
501 | { | |
502 | char *mode = own_buf + 9; | |
503 | int req = -1; | |
504 | char *req_str; | |
505 | ||
506 | if (strcmp (mode, "0") == 0) | |
507 | req = 0; | |
508 | else if (strcmp (mode, "1") == 0) | |
509 | req = 1; | |
510 | else | |
511 | { | |
512 | /* We don't know what this mode is, so complain to | |
513 | GDB. */ | |
514 | fprintf (stderr, "Unknown non-stop mode requested: %s\n", | |
515 | own_buf); | |
516 | write_enn (own_buf); | |
517 | return; | |
518 | } | |
519 | ||
520 | req_str = req ? "non-stop" : "all-stop"; | |
521 | if (start_non_stop (req) != 0) | |
522 | { | |
523 | fprintf (stderr, "Setting %s mode failed\n", req_str); | |
524 | write_enn (own_buf); | |
525 | return; | |
526 | } | |
527 | ||
528 | non_stop = req; | |
529 | ||
530 | if (remote_debug) | |
531 | fprintf (stderr, "[%s mode enabled]\n", req_str); | |
532 | ||
533 | write_ok (own_buf); | |
534 | return; | |
535 | } | |
536 | ||
03583c20 UW |
537 | if (strncmp ("QDisableRandomization:", own_buf, |
538 | strlen ("QDisableRandomization:")) == 0) | |
539 | { | |
540 | char *packet = own_buf + strlen ("QDisableRandomization:"); | |
541 | ULONGEST setting; | |
542 | ||
543 | unpack_varlen_hex (packet, &setting); | |
544 | disable_randomization = setting; | |
545 | ||
546 | if (remote_debug) | |
547 | { | |
548 | if (disable_randomization) | |
549 | fprintf (stderr, "[address space randomization disabled]\n"); | |
550 | else | |
551 | fprintf (stderr, "[address space randomization enabled]\n"); | |
552 | } | |
553 | ||
554 | write_ok (own_buf); | |
555 | return; | |
556 | } | |
557 | ||
219f2f23 PA |
558 | if (target_supports_tracepoints () |
559 | && handle_tracepoint_general_set (own_buf)) | |
560 | return; | |
561 | ||
d1feda86 YQ |
562 | if (strncmp ("QAgent:", own_buf, strlen ("QAgent:")) == 0) |
563 | { | |
564 | char *mode = own_buf + strlen ("QAgent:"); | |
565 | int req = 0; | |
566 | ||
567 | if (strcmp (mode, "0") == 0) | |
568 | req = 0; | |
569 | else if (strcmp (mode, "1") == 0) | |
570 | req = 1; | |
571 | else | |
572 | { | |
573 | /* We don't know what this value is, so complain to GDB. */ | |
574 | sprintf (own_buf, "E.Unknown QAgent value"); | |
575 | return; | |
576 | } | |
577 | ||
578 | /* Update the flag. */ | |
579 | use_agent = req; | |
580 | if (remote_debug) | |
581 | fprintf (stderr, "[%s agent]\n", req ? "Enable" : "Disable"); | |
582 | write_ok (own_buf); | |
583 | return; | |
584 | } | |
585 | ||
89be2091 DJ |
586 | /* Otherwise we didn't know what packet it was. Say we didn't |
587 | understand it. */ | |
588 | own_buf[0] = 0; | |
589 | } | |
590 | ||
23181151 | 591 | static const char * |
fb1e4ffc | 592 | get_features_xml (const char *annex) |
23181151 | 593 | { |
9b4b61c8 UW |
594 | /* gdbserver_xmltarget defines what to return when looking |
595 | for the "target.xml" file. Its contents can either be | |
596 | verbatim XML code (prefixed with a '@') or else the name | |
597 | of the actual XML file to be used in place of "target.xml". | |
fb1e4ffc | 598 | |
9b4b61c8 UW |
599 | This variable is set up from the auto-generated |
600 | init_registers_... routine for the current target. */ | |
fb1e4ffc | 601 | |
9b4b61c8 | 602 | if (gdbserver_xmltarget |
221c031f | 603 | && strcmp (annex, "target.xml") == 0) |
23181151 | 604 | { |
9b4b61c8 UW |
605 | if (*gdbserver_xmltarget == '@') |
606 | return gdbserver_xmltarget + 1; | |
23181151 | 607 | else |
9b4b61c8 | 608 | annex = gdbserver_xmltarget; |
23181151 DJ |
609 | } |
610 | ||
9b4b61c8 UW |
611 | #ifdef USE_XML |
612 | { | |
613 | extern const char *const xml_builtin[][2]; | |
614 | int i; | |
615 | ||
616 | /* Look for the annex. */ | |
617 | for (i = 0; xml_builtin[i][0] != NULL; i++) | |
618 | if (strcmp (annex, xml_builtin[i][0]) == 0) | |
619 | break; | |
620 | ||
621 | if (xml_builtin[i][0] != NULL) | |
622 | return xml_builtin[i][1]; | |
623 | } | |
624 | #endif | |
625 | ||
626 | return NULL; | |
23181151 DJ |
627 | } |
628 | ||
c74d0ad8 DJ |
629 | void |
630 | monitor_show_help (void) | |
631 | { | |
632 | monitor_output ("The following monitor commands are supported:\n"); | |
633 | monitor_output (" set debug <0|1>\n"); | |
1b3f6016 | 634 | monitor_output (" Enable general debugging messages\n"); |
aa5ca48f DE |
635 | monitor_output (" set debug-hw-points <0|1>\n"); |
636 | monitor_output (" Enable h/w breakpoint/watchpoint debugging messages\n"); | |
c74d0ad8 DJ |
637 | monitor_output (" set remote-debug <0|1>\n"); |
638 | monitor_output (" Enable remote protocol debugging messages\n"); | |
ecd7ecbc DJ |
639 | monitor_output (" exit\n"); |
640 | monitor_output (" Quit GDBserver\n"); | |
c74d0ad8 DJ |
641 | } |
642 | ||
764880b7 PA |
643 | /* Read trace frame or inferior memory. Returns the number of bytes |
644 | actually read, zero when no further transfer is possible, and -1 on | |
645 | error. Return of a positive value smaller than LEN does not | |
646 | indicate there's no more to be read, only the end of the transfer. | |
647 | E.g., when GDB reads memory from a traceframe, a first request may | |
648 | be served from a memory block that does not cover the whole request | |
649 | length. A following request gets the rest served from either | |
650 | another block (of the same traceframe) or from the read-only | |
651 | regions. */ | |
219f2f23 PA |
652 | |
653 | static int | |
90d74c30 | 654 | gdb_read_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) |
219f2f23 | 655 | { |
764880b7 | 656 | int res; |
90d74c30 | 657 | |
219f2f23 PA |
658 | if (current_traceframe >= 0) |
659 | { | |
660 | ULONGEST nbytes; | |
661 | ULONGEST length = len; | |
662 | ||
663 | if (traceframe_read_mem (current_traceframe, | |
664 | memaddr, myaddr, len, &nbytes)) | |
665 | return EIO; | |
666 | /* Data read from trace buffer, we're done. */ | |
764880b7 PA |
667 | if (nbytes > 0) |
668 | return nbytes; | |
219f2f23 | 669 | if (!in_readonly_region (memaddr, length)) |
764880b7 | 670 | return -1; |
219f2f23 PA |
671 | /* Otherwise we have a valid readonly case, fall through. */ |
672 | /* (assume no half-trace half-real blocks for now) */ | |
673 | } | |
674 | ||
764880b7 PA |
675 | res = prepare_to_access_memory (); |
676 | if (res == 0) | |
90d74c30 | 677 | { |
764880b7 | 678 | res = read_inferior_memory (memaddr, myaddr, len); |
0146f85b | 679 | done_accessing_memory (); |
90d74c30 | 680 | |
764880b7 PA |
681 | return res == 0 ? len : -1; |
682 | } | |
683 | else | |
684 | return -1; | |
219f2f23 PA |
685 | } |
686 | ||
687 | /* Write trace frame or inferior memory. Actually, writing to trace | |
688 | frames is forbidden. */ | |
689 | ||
690 | static int | |
90d74c30 | 691 | gdb_write_memory (CORE_ADDR memaddr, const unsigned char *myaddr, int len) |
219f2f23 PA |
692 | { |
693 | if (current_traceframe >= 0) | |
694 | return EIO; | |
695 | else | |
90d74c30 PA |
696 | { |
697 | int ret; | |
698 | ||
699 | ret = prepare_to_access_memory (); | |
700 | if (ret == 0) | |
701 | { | |
702 | ret = write_inferior_memory (memaddr, myaddr, len); | |
0146f85b | 703 | done_accessing_memory (); |
90d74c30 PA |
704 | } |
705 | return ret; | |
706 | } | |
219f2f23 PA |
707 | } |
708 | ||
08388c79 DE |
709 | /* Subroutine of handle_search_memory to simplify it. */ |
710 | ||
711 | static int | |
712 | handle_search_memory_1 (CORE_ADDR start_addr, CORE_ADDR search_space_len, | |
713 | gdb_byte *pattern, unsigned pattern_len, | |
714 | gdb_byte *search_buf, | |
715 | unsigned chunk_size, unsigned search_buf_size, | |
716 | CORE_ADDR *found_addrp) | |
717 | { | |
718 | /* Prime the search buffer. */ | |
719 | ||
764880b7 PA |
720 | if (gdb_read_memory (start_addr, search_buf, search_buf_size) |
721 | != search_buf_size) | |
08388c79 | 722 | { |
5e1471f5 | 723 | warning ("Unable to access target memory at 0x%lx, halting search.", |
08388c79 DE |
724 | (long) start_addr); |
725 | return -1; | |
726 | } | |
727 | ||
728 | /* Perform the search. | |
729 | ||
730 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
731 | When we've scanned N bytes we copy the trailing bytes to the start and | |
732 | read in another N bytes. */ | |
733 | ||
734 | while (search_space_len >= pattern_len) | |
735 | { | |
736 | gdb_byte *found_ptr; | |
737 | unsigned nr_search_bytes = (search_space_len < search_buf_size | |
738 | ? search_space_len | |
739 | : search_buf_size); | |
740 | ||
741 | found_ptr = memmem (search_buf, nr_search_bytes, pattern, pattern_len); | |
742 | ||
743 | if (found_ptr != NULL) | |
744 | { | |
745 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
746 | *found_addrp = found_addr; | |
747 | return 1; | |
748 | } | |
749 | ||
750 | /* Not found in this chunk, skip to next chunk. */ | |
751 | ||
752 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
753 | if (search_space_len >= chunk_size) | |
754 | search_space_len -= chunk_size; | |
755 | else | |
756 | search_space_len = 0; | |
757 | ||
758 | if (search_space_len >= pattern_len) | |
759 | { | |
760 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 761 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
762 | int nr_to_read; |
763 | ||
764 | /* Copy the trailing part of the previous iteration to the front | |
765 | of the buffer for the next iteration. */ | |
766 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
767 | ||
768 | nr_to_read = (search_space_len - keep_len < chunk_size | |
769 | ? search_space_len - keep_len | |
770 | : chunk_size); | |
771 | ||
90d74c30 | 772 | if (gdb_read_memory (read_addr, search_buf + keep_len, |
764880b7 | 773 | nr_to_read) != search_buf_size) |
08388c79 | 774 | { |
493e2a69 MS |
775 | warning ("Unable to access target memory " |
776 | "at 0x%lx, halting search.", | |
08388c79 DE |
777 | (long) read_addr); |
778 | return -1; | |
779 | } | |
780 | ||
781 | start_addr += chunk_size; | |
782 | } | |
783 | } | |
784 | ||
785 | /* Not found. */ | |
786 | ||
787 | return 0; | |
788 | } | |
789 | ||
790 | /* Handle qSearch:memory packets. */ | |
791 | ||
792 | static void | |
793 | handle_search_memory (char *own_buf, int packet_len) | |
794 | { | |
795 | CORE_ADDR start_addr; | |
796 | CORE_ADDR search_space_len; | |
797 | gdb_byte *pattern; | |
798 | unsigned int pattern_len; | |
799 | /* NOTE: also defined in find.c testcase. */ | |
800 | #define SEARCH_CHUNK_SIZE 16000 | |
801 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
802 | /* Buffer to hold memory contents for searching. */ | |
803 | gdb_byte *search_buf; | |
804 | unsigned search_buf_size; | |
805 | int found; | |
806 | CORE_ADDR found_addr; | |
807 | int cmd_name_len = sizeof ("qSearch:memory:") - 1; | |
808 | ||
aef93bd7 | 809 | pattern = malloc (packet_len); |
08388c79 DE |
810 | if (pattern == NULL) |
811 | { | |
5e1471f5 | 812 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
813 | strcpy (own_buf, "E00"); |
814 | return; | |
815 | } | |
816 | if (decode_search_memory_packet (own_buf + cmd_name_len, | |
817 | packet_len - cmd_name_len, | |
818 | &start_addr, &search_space_len, | |
819 | pattern, &pattern_len) < 0) | |
820 | { | |
821 | free (pattern); | |
5e1471f5 | 822 | error ("Error in parsing qSearch:memory packet"); |
08388c79 DE |
823 | strcpy (own_buf, "E00"); |
824 | return; | |
825 | } | |
826 | ||
827 | search_buf_size = chunk_size + pattern_len - 1; | |
828 | ||
829 | /* No point in trying to allocate a buffer larger than the search space. */ | |
830 | if (search_space_len < search_buf_size) | |
831 | search_buf_size = search_space_len; | |
832 | ||
aef93bd7 | 833 | search_buf = malloc (search_buf_size); |
08388c79 DE |
834 | if (search_buf == NULL) |
835 | { | |
836 | free (pattern); | |
5e1471f5 | 837 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
838 | strcpy (own_buf, "E00"); |
839 | return; | |
840 | } | |
841 | ||
842 | found = handle_search_memory_1 (start_addr, search_space_len, | |
843 | pattern, pattern_len, | |
844 | search_buf, chunk_size, search_buf_size, | |
845 | &found_addr); | |
846 | ||
847 | if (found > 0) | |
848 | sprintf (own_buf, "1,%lx", (long) found_addr); | |
849 | else if (found == 0) | |
850 | strcpy (own_buf, "0"); | |
851 | else | |
852 | strcpy (own_buf, "E00"); | |
853 | ||
854 | free (search_buf); | |
855 | free (pattern); | |
856 | } | |
857 | ||
2d717e4f DJ |
858 | #define require_running(BUF) \ |
859 | if (!target_running ()) \ | |
860 | { \ | |
861 | write_enn (BUF); \ | |
862 | return; \ | |
863 | } | |
864 | ||
cdbfd419 PP |
865 | /* Handle monitor commands not handled by target-specific handlers. */ |
866 | ||
867 | static void | |
d73f2619 | 868 | handle_monitor_command (char *mon, char *own_buf) |
cdbfd419 PP |
869 | { |
870 | if (strcmp (mon, "set debug 1") == 0) | |
871 | { | |
872 | debug_threads = 1; | |
873 | monitor_output ("Debug output enabled.\n"); | |
874 | } | |
875 | else if (strcmp (mon, "set debug 0") == 0) | |
876 | { | |
877 | debug_threads = 0; | |
878 | monitor_output ("Debug output disabled.\n"); | |
879 | } | |
880 | else if (strcmp (mon, "set debug-hw-points 1") == 0) | |
881 | { | |
882 | debug_hw_points = 1; | |
883 | monitor_output ("H/W point debugging output enabled.\n"); | |
884 | } | |
885 | else if (strcmp (mon, "set debug-hw-points 0") == 0) | |
886 | { | |
887 | debug_hw_points = 0; | |
888 | monitor_output ("H/W point debugging output disabled.\n"); | |
889 | } | |
890 | else if (strcmp (mon, "set remote-debug 1") == 0) | |
891 | { | |
892 | remote_debug = 1; | |
893 | monitor_output ("Protocol debug output enabled.\n"); | |
894 | } | |
895 | else if (strcmp (mon, "set remote-debug 0") == 0) | |
896 | { | |
897 | remote_debug = 0; | |
898 | monitor_output ("Protocol debug output disabled.\n"); | |
899 | } | |
900 | else if (strcmp (mon, "help") == 0) | |
901 | monitor_show_help (); | |
902 | else if (strcmp (mon, "exit") == 0) | |
903 | exit_requested = 1; | |
904 | else | |
905 | { | |
906 | monitor_output ("Unknown monitor command.\n\n"); | |
907 | monitor_show_help (); | |
908 | write_enn (own_buf); | |
909 | } | |
910 | } | |
911 | ||
d08aafef PA |
912 | /* Associates a callback with each supported qXfer'able object. */ |
913 | ||
914 | struct qxfer | |
915 | { | |
916 | /* The object this handler handles. */ | |
917 | const char *object; | |
918 | ||
919 | /* Request that the target transfer up to LEN 8-bit bytes of the | |
920 | target's OBJECT. The OFFSET, for a seekable object, specifies | |
921 | the starting point. The ANNEX can be used to provide additional | |
922 | data-specific information to the target. | |
923 | ||
924 | Return the number of bytes actually transfered, zero when no | |
925 | further transfer is possible, -1 on error, and -2 when the | |
926 | transfer is not supported. Return of a positive value smaller | |
927 | than LEN does not indicate the end of the object, only the end of | |
928 | the transfer. | |
929 | ||
930 | One, and only one, of readbuf or writebuf must be non-NULL. */ | |
931 | int (*xfer) (const char *annex, | |
932 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
933 | ULONGEST offset, LONGEST len); | |
934 | }; | |
935 | ||
936 | /* Handle qXfer:auxv:read. */ | |
937 | ||
938 | static int | |
939 | handle_qxfer_auxv (const char *annex, | |
940 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
941 | ULONGEST offset, LONGEST len) | |
942 | { | |
943 | if (the_target->read_auxv == NULL || writebuf != NULL) | |
944 | return -2; | |
945 | ||
946 | if (annex[0] != '\0' || !target_running ()) | |
947 | return -1; | |
948 | ||
949 | return (*the_target->read_auxv) (offset, readbuf, len); | |
950 | } | |
951 | ||
952 | /* Handle qXfer:features:read. */ | |
953 | ||
954 | static int | |
955 | handle_qxfer_features (const char *annex, | |
956 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
957 | ULONGEST offset, LONGEST len) | |
958 | { | |
959 | const char *document; | |
960 | size_t total_len; | |
961 | ||
962 | if (writebuf != NULL) | |
963 | return -2; | |
964 | ||
965 | if (!target_running ()) | |
966 | return -1; | |
967 | ||
968 | /* Grab the correct annex. */ | |
969 | document = get_features_xml (annex); | |
970 | if (document == NULL) | |
971 | return -1; | |
972 | ||
973 | total_len = strlen (document); | |
974 | ||
975 | if (offset > total_len) | |
976 | return -1; | |
977 | ||
978 | if (offset + len > total_len) | |
979 | len = total_len - offset; | |
980 | ||
981 | memcpy (readbuf, document + offset, len); | |
982 | return len; | |
983 | } | |
984 | ||
985 | /* Handle qXfer:libraries:read. */ | |
986 | ||
987 | static int | |
988 | handle_qxfer_libraries (const char *annex, | |
989 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
990 | ULONGEST offset, LONGEST len) | |
991 | { | |
992 | unsigned int total_len; | |
993 | char *document, *p; | |
994 | struct inferior_list_entry *dll_ptr; | |
995 | ||
996 | if (writebuf != NULL) | |
997 | return -2; | |
998 | ||
999 | if (annex[0] != '\0' || !target_running ()) | |
1000 | return -1; | |
1001 | ||
2268b414 JK |
1002 | /* Do not confuse this packet with qXfer:libraries-svr4:read. */ |
1003 | if (the_target->qxfer_libraries_svr4 != NULL) | |
1004 | return 0; | |
1005 | ||
d08aafef PA |
1006 | /* Over-estimate the necessary memory. Assume that every character |
1007 | in the library name must be escaped. */ | |
1008 | total_len = 64; | |
1009 | for (dll_ptr = all_dlls.head; dll_ptr != NULL; dll_ptr = dll_ptr->next) | |
1010 | total_len += 128 + 6 * strlen (((struct dll_info *) dll_ptr)->name); | |
1011 | ||
1012 | document = malloc (total_len); | |
1013 | if (document == NULL) | |
1014 | return -1; | |
1015 | ||
1016 | strcpy (document, "<library-list>\n"); | |
1017 | p = document + strlen (document); | |
1018 | ||
1019 | for (dll_ptr = all_dlls.head; dll_ptr != NULL; dll_ptr = dll_ptr->next) | |
1020 | { | |
1021 | struct dll_info *dll = (struct dll_info *) dll_ptr; | |
1022 | char *name; | |
1023 | ||
1024 | strcpy (p, " <library name=\""); | |
1025 | p = p + strlen (p); | |
1026 | name = xml_escape_text (dll->name); | |
1027 | strcpy (p, name); | |
1028 | free (name); | |
1029 | p = p + strlen (p); | |
1030 | strcpy (p, "\"><segment address=\""); | |
1031 | p = p + strlen (p); | |
1032 | sprintf (p, "0x%lx", (long) dll->base_addr); | |
1033 | p = p + strlen (p); | |
1034 | strcpy (p, "\"/></library>\n"); | |
1035 | p = p + strlen (p); | |
1036 | } | |
1037 | ||
1038 | strcpy (p, "</library-list>\n"); | |
1039 | ||
1040 | total_len = strlen (document); | |
1041 | ||
1042 | if (offset > total_len) | |
1043 | { | |
1044 | free (document); | |
1045 | return -1; | |
1046 | } | |
1047 | ||
1048 | if (offset + len > total_len) | |
1049 | len = total_len - offset; | |
1050 | ||
1051 | memcpy (readbuf, document + offset, len); | |
1052 | free (document); | |
1053 | return len; | |
1054 | } | |
1055 | ||
2268b414 JK |
1056 | /* Handle qXfer:libraries-svr4:read. */ |
1057 | ||
1058 | static int | |
1059 | handle_qxfer_libraries_svr4 (const char *annex, | |
1060 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1061 | ULONGEST offset, LONGEST len) | |
1062 | { | |
1063 | if (writebuf != NULL) | |
1064 | return -2; | |
1065 | ||
1066 | if (annex[0] != '\0' || !target_running () | |
1067 | || the_target->qxfer_libraries_svr4 == NULL) | |
1068 | return -1; | |
1069 | ||
1070 | return the_target->qxfer_libraries_svr4 (annex, readbuf, writebuf, offset, len); | |
1071 | } | |
1072 | ||
d08aafef PA |
1073 | /* Handle qXfer:osadata:read. */ |
1074 | ||
1075 | static int | |
1076 | handle_qxfer_osdata (const char *annex, | |
1077 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1078 | ULONGEST offset, LONGEST len) | |
1079 | { | |
1080 | if (the_target->qxfer_osdata == NULL || writebuf != NULL) | |
1081 | return -2; | |
1082 | ||
1083 | return (*the_target->qxfer_osdata) (annex, readbuf, NULL, offset, len); | |
1084 | } | |
1085 | ||
1086 | /* Handle qXfer:siginfo:read and qXfer:siginfo:write. */ | |
1087 | ||
1088 | static int | |
1089 | handle_qxfer_siginfo (const char *annex, | |
1090 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1091 | ULONGEST offset, LONGEST len) | |
1092 | { | |
1093 | if (the_target->qxfer_siginfo == NULL) | |
1094 | return -2; | |
1095 | ||
1096 | if (annex[0] != '\0' || !target_running ()) | |
1097 | return -1; | |
1098 | ||
1099 | return (*the_target->qxfer_siginfo) (annex, readbuf, writebuf, offset, len); | |
1100 | } | |
1101 | ||
1102 | /* Handle qXfer:spu:read and qXfer:spu:write. */ | |
1103 | ||
1104 | static int | |
1105 | handle_qxfer_spu (const char *annex, | |
1106 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1107 | ULONGEST offset, LONGEST len) | |
1108 | { | |
1109 | if (the_target->qxfer_spu == NULL) | |
1110 | return -2; | |
1111 | ||
1112 | if (!target_running ()) | |
1113 | return -1; | |
1114 | ||
1115 | return (*the_target->qxfer_spu) (annex, readbuf, writebuf, offset, len); | |
1116 | } | |
1117 | ||
1118 | /* Handle qXfer:statictrace:read. */ | |
1119 | ||
1120 | static int | |
1121 | handle_qxfer_statictrace (const char *annex, | |
1122 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1123 | ULONGEST offset, LONGEST len) | |
1124 | { | |
1125 | ULONGEST nbytes; | |
1126 | ||
1127 | if (writebuf != NULL) | |
1128 | return -2; | |
1129 | ||
1130 | if (annex[0] != '\0' || !target_running () || current_traceframe == -1) | |
1131 | return -1; | |
1132 | ||
1133 | if (traceframe_read_sdata (current_traceframe, offset, | |
1134 | readbuf, len, &nbytes)) | |
1135 | return -1; | |
1136 | return nbytes; | |
1137 | } | |
1138 | ||
1139 | /* Helper for handle_qxfer_threads. */ | |
1140 | ||
dc146f7c | 1141 | static void |
d08aafef | 1142 | handle_qxfer_threads_proper (struct buffer *buffer) |
dc146f7c VP |
1143 | { |
1144 | struct inferior_list_entry *thread; | |
1145 | ||
1146 | buffer_grow_str (buffer, "<threads>\n"); | |
1147 | ||
1148 | for (thread = all_threads.head; thread; thread = thread->next) | |
1149 | { | |
1150 | ptid_t ptid = thread_to_gdb_id ((struct thread_info *)thread); | |
1151 | char ptid_s[100]; | |
1152 | int core = -1; | |
1153 | char core_s[21]; | |
1154 | ||
1155 | write_ptid (ptid_s, ptid); | |
1156 | ||
1157 | if (the_target->core_of_thread) | |
1158 | core = (*the_target->core_of_thread) (ptid); | |
1159 | ||
1160 | if (core != -1) | |
1161 | { | |
1162 | sprintf (core_s, "%d", core); | |
1163 | buffer_xml_printf (buffer, "<thread id=\"%s\" core=\"%s\"/>\n", | |
1164 | ptid_s, core_s); | |
1165 | } | |
1166 | else | |
1167 | { | |
1168 | buffer_xml_printf (buffer, "<thread id=\"%s\"/>\n", | |
1169 | ptid_s); | |
1170 | } | |
1171 | } | |
1172 | ||
1173 | buffer_grow_str0 (buffer, "</threads>\n"); | |
1174 | } | |
1175 | ||
d08aafef PA |
1176 | /* Handle qXfer:threads:read. */ |
1177 | ||
dc146f7c | 1178 | static int |
d08aafef PA |
1179 | handle_qxfer_threads (const char *annex, |
1180 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1181 | ULONGEST offset, LONGEST len) | |
dc146f7c VP |
1182 | { |
1183 | static char *result = 0; | |
1184 | static unsigned int result_length = 0; | |
1185 | ||
d08aafef PA |
1186 | if (writebuf != NULL) |
1187 | return -2; | |
1188 | ||
1189 | if (!target_running () || annex[0] != '\0') | |
1190 | return -1; | |
dc146f7c VP |
1191 | |
1192 | if (offset == 0) | |
1193 | { | |
1194 | struct buffer buffer; | |
1195 | /* When asked for data at offset 0, generate everything and store into | |
1196 | 'result'. Successive reads will be served off 'result'. */ | |
1197 | if (result) | |
1198 | free (result); | |
1199 | ||
1200 | buffer_init (&buffer); | |
1201 | ||
d08aafef | 1202 | handle_qxfer_threads_proper (&buffer); |
dc146f7c VP |
1203 | |
1204 | result = buffer_finish (&buffer); | |
1205 | result_length = strlen (result); | |
1206 | buffer_free (&buffer); | |
1207 | } | |
1208 | ||
1209 | if (offset >= result_length) | |
1210 | { | |
1211 | /* We're out of data. */ | |
1212 | free (result); | |
1213 | result = NULL; | |
1214 | result_length = 0; | |
1215 | return 0; | |
1216 | } | |
1217 | ||
d08aafef PA |
1218 | if (len > result_length - offset) |
1219 | len = result_length - offset; | |
1220 | ||
1221 | memcpy (readbuf, result + offset, len); | |
1222 | ||
1223 | return len; | |
1224 | } | |
1225 | ||
b3b9301e PA |
1226 | /* Handle qXfer:traceframe-info:read. */ |
1227 | ||
1228 | static int | |
1229 | handle_qxfer_traceframe_info (const char *annex, | |
1230 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1231 | ULONGEST offset, LONGEST len) | |
1232 | { | |
1233 | static char *result = 0; | |
1234 | static unsigned int result_length = 0; | |
1235 | ||
1236 | if (writebuf != NULL) | |
1237 | return -2; | |
1238 | ||
1239 | if (!target_running () || annex[0] != '\0' || current_traceframe == -1) | |
1240 | return -1; | |
1241 | ||
1242 | if (offset == 0) | |
1243 | { | |
1244 | struct buffer buffer; | |
1245 | ||
1246 | /* When asked for data at offset 0, generate everything and | |
1247 | store into 'result'. Successive reads will be served off | |
1248 | 'result'. */ | |
1249 | free (result); | |
1250 | ||
1251 | buffer_init (&buffer); | |
1252 | ||
1253 | traceframe_read_info (current_traceframe, &buffer); | |
1254 | ||
1255 | result = buffer_finish (&buffer); | |
1256 | result_length = strlen (result); | |
1257 | buffer_free (&buffer); | |
1258 | } | |
1259 | ||
1260 | if (offset >= result_length) | |
1261 | { | |
1262 | /* We're out of data. */ | |
1263 | free (result); | |
1264 | result = NULL; | |
1265 | result_length = 0; | |
1266 | return 0; | |
1267 | } | |
1268 | ||
1269 | if (len > result_length - offset) | |
1270 | len = result_length - offset; | |
1271 | ||
1272 | memcpy (readbuf, result + offset, len); | |
1273 | return len; | |
1274 | } | |
1275 | ||
78d85199 YQ |
1276 | /* Handle qXfer:fdpic:read. */ |
1277 | ||
1278 | static int | |
1279 | handle_qxfer_fdpic (const char *annex, gdb_byte *readbuf, | |
1280 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1281 | { | |
1282 | if (the_target->read_loadmap == NULL) | |
1283 | return -2; | |
1284 | ||
1285 | if (!target_running ()) | |
1286 | return -1; | |
1287 | ||
1288 | return (*the_target->read_loadmap) (annex, offset, readbuf, len); | |
1289 | } | |
1290 | ||
d08aafef PA |
1291 | static const struct qxfer qxfer_packets[] = |
1292 | { | |
1293 | { "auxv", handle_qxfer_auxv }, | |
78d85199 | 1294 | { "fdpic", handle_qxfer_fdpic}, |
d08aafef PA |
1295 | { "features", handle_qxfer_features }, |
1296 | { "libraries", handle_qxfer_libraries }, | |
2268b414 | 1297 | { "libraries-svr4", handle_qxfer_libraries_svr4 }, |
d08aafef PA |
1298 | { "osdata", handle_qxfer_osdata }, |
1299 | { "siginfo", handle_qxfer_siginfo }, | |
1300 | { "spu", handle_qxfer_spu }, | |
1301 | { "statictrace", handle_qxfer_statictrace }, | |
1302 | { "threads", handle_qxfer_threads }, | |
b3b9301e | 1303 | { "traceframe-info", handle_qxfer_traceframe_info }, |
d08aafef PA |
1304 | }; |
1305 | ||
1306 | static int | |
1307 | handle_qxfer (char *own_buf, int packet_len, int *new_packet_len_p) | |
1308 | { | |
1309 | int i; | |
1310 | char *object; | |
1311 | char *rw; | |
1312 | char *annex; | |
1313 | char *offset; | |
1314 | ||
1315 | if (strncmp (own_buf, "qXfer:", 6) != 0) | |
1316 | return 0; | |
1317 | ||
1318 | /* Grab the object, r/w and annex. */ | |
1319 | if (decode_xfer (own_buf + 6, &object, &rw, &annex, &offset) < 0) | |
1320 | { | |
1321 | write_enn (own_buf); | |
1322 | return 1; | |
1323 | } | |
1324 | ||
1325 | for (i = 0; | |
1326 | i < sizeof (qxfer_packets) / sizeof (qxfer_packets[0]); | |
1327 | i++) | |
1328 | { | |
1329 | const struct qxfer *q = &qxfer_packets[i]; | |
1330 | ||
1331 | if (strcmp (object, q->object) == 0) | |
1332 | { | |
1333 | if (strcmp (rw, "read") == 0) | |
1334 | { | |
1335 | unsigned char *data; | |
1336 | int n; | |
1337 | CORE_ADDR ofs; | |
1338 | unsigned int len; | |
1339 | ||
1340 | /* Grab the offset and length. */ | |
1341 | if (decode_xfer_read (offset, &ofs, &len) < 0) | |
1342 | { | |
1343 | write_enn (own_buf); | |
1344 | return 1; | |
1345 | } | |
1346 | ||
1347 | /* Read one extra byte, as an indicator of whether there is | |
1348 | more. */ | |
1349 | if (len > PBUFSIZ - 2) | |
1350 | len = PBUFSIZ - 2; | |
1351 | data = malloc (len + 1); | |
1352 | if (data == NULL) | |
1353 | { | |
1354 | write_enn (own_buf); | |
1355 | return 1; | |
1356 | } | |
1357 | n = (*q->xfer) (annex, data, NULL, ofs, len + 1); | |
1358 | if (n == -2) | |
1359 | { | |
1360 | free (data); | |
1361 | return 0; | |
1362 | } | |
1363 | else if (n < 0) | |
1364 | write_enn (own_buf); | |
1365 | else if (n > len) | |
1366 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); | |
1367 | else | |
1368 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); | |
1369 | ||
1370 | free (data); | |
1371 | return 1; | |
1372 | } | |
1373 | else if (strcmp (rw, "write") == 0) | |
1374 | { | |
1375 | int n; | |
1376 | unsigned int len; | |
1377 | CORE_ADDR ofs; | |
1378 | unsigned char *data; | |
1379 | ||
1380 | strcpy (own_buf, "E00"); | |
1381 | data = malloc (packet_len - (offset - own_buf)); | |
1382 | if (data == NULL) | |
1383 | { | |
1384 | write_enn (own_buf); | |
1385 | return 1; | |
1386 | } | |
1387 | if (decode_xfer_write (offset, packet_len - (offset - own_buf), | |
1388 | &ofs, &len, data) < 0) | |
1389 | { | |
1390 | free (data); | |
1391 | write_enn (own_buf); | |
1392 | return 1; | |
1393 | } | |
1394 | ||
1395 | n = (*q->xfer) (annex, NULL, data, ofs, len); | |
1396 | if (n == -2) | |
1397 | { | |
1398 | free (data); | |
1399 | return 0; | |
1400 | } | |
1401 | else if (n < 0) | |
1402 | write_enn (own_buf); | |
1403 | else | |
1404 | sprintf (own_buf, "%x", n); | |
dc146f7c | 1405 | |
d08aafef PA |
1406 | free (data); |
1407 | return 1; | |
1408 | } | |
dc146f7c | 1409 | |
d08aafef PA |
1410 | return 0; |
1411 | } | |
1412 | } | |
dc146f7c | 1413 | |
d08aafef | 1414 | return 0; |
dc146f7c VP |
1415 | } |
1416 | ||
30ba68cb MS |
1417 | /* Table used by the crc32 function to calcuate the checksum. */ |
1418 | ||
1419 | static unsigned int crc32_table[256] = | |
1420 | {0, 0}; | |
1421 | ||
1422 | /* Compute 32 bit CRC from inferior memory. | |
1423 | ||
1424 | On success, return 32 bit CRC. | |
1425 | On failure, return (unsigned long long) -1. */ | |
1426 | ||
1427 | static unsigned long long | |
1428 | crc32 (CORE_ADDR base, int len, unsigned int crc) | |
1429 | { | |
1430 | if (!crc32_table[1]) | |
1431 | { | |
1432 | /* Initialize the CRC table and the decoding table. */ | |
1433 | int i, j; | |
1434 | unsigned int c; | |
1435 | ||
1436 | for (i = 0; i < 256; i++) | |
1437 | { | |
1438 | for (c = i << 24, j = 8; j > 0; --j) | |
1439 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
1440 | crc32_table[i] = c; | |
1441 | } | |
1442 | } | |
1443 | ||
1444 | while (len--) | |
1445 | { | |
1446 | unsigned char byte = 0; | |
1447 | ||
1448 | /* Return failure if memory read fails. */ | |
1449 | if (read_inferior_memory (base, &byte, 1) != 0) | |
1450 | return (unsigned long long) -1; | |
1451 | ||
1452 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ byte) & 255]; | |
1453 | base++; | |
1454 | } | |
1455 | return (unsigned long long) crc; | |
1456 | } | |
1457 | ||
ce3a066d | 1458 | /* Handle all of the extended 'q' packets. */ |
d08aafef | 1459 | |
ce3a066d | 1460 | void |
0e7f50da | 1461 | handle_query (char *own_buf, int packet_len, int *new_packet_len_p) |
ce3a066d | 1462 | { |
0d62e5e8 DJ |
1463 | static struct inferior_list_entry *thread_ptr; |
1464 | ||
bb63802a | 1465 | /* Reply the current thread id. */ |
db42f210 | 1466 | if (strcmp ("qC", own_buf) == 0 && !disable_packet_qC) |
bb63802a | 1467 | { |
95954743 | 1468 | ptid_t gdb_id; |
2d717e4f | 1469 | require_running (own_buf); |
bd99dc85 | 1470 | |
95954743 PA |
1471 | if (!ptid_equal (general_thread, null_ptid) |
1472 | && !ptid_equal (general_thread, minus_one_ptid)) | |
bd99dc85 PA |
1473 | gdb_id = general_thread; |
1474 | else | |
1475 | { | |
1476 | thread_ptr = all_threads.head; | |
1477 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
1478 | } | |
1479 | ||
95954743 PA |
1480 | sprintf (own_buf, "QC"); |
1481 | own_buf += 2; | |
4b812f4e | 1482 | write_ptid (own_buf, gdb_id); |
bb63802a UW |
1483 | return; |
1484 | } | |
1485 | ||
ce3a066d DJ |
1486 | if (strcmp ("qSymbol::", own_buf) == 0) |
1487 | { | |
d3bbe7a0 PA |
1488 | /* GDB is suggesting new symbols have been loaded. This may |
1489 | mean a new shared library has been detected as loaded, so | |
1490 | take the opportunity to check if breakpoints we think are | |
1491 | inserted, still are. Note that it isn't guaranteed that | |
1492 | we'll see this when a shared library is loaded, and nor will | |
1493 | we see this for unloads (although breakpoints in unloaded | |
1494 | libraries shouldn't trigger), as GDB may not find symbols for | |
1495 | the library at all. We also re-validate breakpoints when we | |
1496 | see a second GDB breakpoint for the same address, and or when | |
1497 | we access breakpoint shadows. */ | |
1498 | validate_breakpoints (); | |
1499 | ||
fa593d66 PA |
1500 | if (target_supports_tracepoints ()) |
1501 | tracepoint_look_up_symbols (); | |
1502 | ||
2d717e4f | 1503 | if (target_running () && the_target->look_up_symbols != NULL) |
2f2893d9 DJ |
1504 | (*the_target->look_up_symbols) (); |
1505 | ||
ce3a066d DJ |
1506 | strcpy (own_buf, "OK"); |
1507 | return; | |
1508 | } | |
1509 | ||
db42f210 | 1510 | if (!disable_packet_qfThreadInfo) |
0d62e5e8 | 1511 | { |
db42f210 | 1512 | if (strcmp ("qfThreadInfo", own_buf) == 0) |
0d62e5e8 | 1513 | { |
95954743 PA |
1514 | ptid_t gdb_id; |
1515 | ||
db42f210 PA |
1516 | require_running (own_buf); |
1517 | thread_ptr = all_threads.head; | |
95954743 PA |
1518 | |
1519 | *own_buf++ = 'm'; | |
1520 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
1521 | write_ptid (own_buf, gdb_id); | |
0d62e5e8 DJ |
1522 | thread_ptr = thread_ptr->next; |
1523 | return; | |
1524 | } | |
db42f210 PA |
1525 | |
1526 | if (strcmp ("qsThreadInfo", own_buf) == 0) | |
0d62e5e8 | 1527 | { |
95954743 PA |
1528 | ptid_t gdb_id; |
1529 | ||
db42f210 PA |
1530 | require_running (own_buf); |
1531 | if (thread_ptr != NULL) | |
1532 | { | |
95954743 PA |
1533 | *own_buf++ = 'm'; |
1534 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
1535 | write_ptid (own_buf, gdb_id); | |
db42f210 PA |
1536 | thread_ptr = thread_ptr->next; |
1537 | return; | |
1538 | } | |
1539 | else | |
1540 | { | |
1541 | sprintf (own_buf, "l"); | |
1542 | return; | |
1543 | } | |
0d62e5e8 DJ |
1544 | } |
1545 | } | |
aa691b87 | 1546 | |
52fb6437 NS |
1547 | if (the_target->read_offsets != NULL |
1548 | && strcmp ("qOffsets", own_buf) == 0) | |
1549 | { | |
1550 | CORE_ADDR text, data; | |
2d717e4f DJ |
1551 | |
1552 | require_running (own_buf); | |
52fb6437 NS |
1553 | if (the_target->read_offsets (&text, &data)) |
1554 | sprintf (own_buf, "Text=%lX;Data=%lX;Bss=%lX", | |
1555 | (long)text, (long)data, (long)data); | |
1556 | else | |
1557 | write_enn (own_buf); | |
1b3f6016 | 1558 | |
52fb6437 NS |
1559 | return; |
1560 | } | |
1561 | ||
be2a5f71 DJ |
1562 | /* Protocol features query. */ |
1563 | if (strncmp ("qSupported", own_buf, 10) == 0 | |
1564 | && (own_buf[10] == ':' || own_buf[10] == '\0')) | |
1565 | { | |
95954743 | 1566 | char *p = &own_buf[10]; |
fa593d66 | 1567 | int gdb_supports_qRelocInsn = 0; |
95954743 | 1568 | |
1570b33e L |
1569 | /* Start processing qSupported packet. */ |
1570 | target_process_qsupported (NULL); | |
1571 | ||
95954743 PA |
1572 | /* Process each feature being provided by GDB. The first |
1573 | feature will follow a ':', and latter features will follow | |
1574 | ';'. */ | |
1575 | if (*p == ':') | |
d149dd1d PA |
1576 | { |
1577 | char **qsupported = NULL; | |
1578 | int count = 0; | |
1579 | int i; | |
1580 | ||
1581 | /* Two passes, to avoid nested strtok calls in | |
1582 | target_process_qsupported. */ | |
1583 | for (p = strtok (p + 1, ";"); | |
1584 | p != NULL; | |
1585 | p = strtok (NULL, ";")) | |
1586 | { | |
1587 | count++; | |
1588 | qsupported = xrealloc (qsupported, count * sizeof (char *)); | |
1589 | qsupported[count - 1] = xstrdup (p); | |
1590 | } | |
1591 | ||
1592 | for (i = 0; i < count; i++) | |
1593 | { | |
1594 | p = qsupported[i]; | |
1595 | if (strcmp (p, "multiprocess+") == 0) | |
1596 | { | |
1597 | /* GDB supports and wants multi-process support if | |
1598 | possible. */ | |
1599 | if (target_supports_multi_process ()) | |
1600 | multi_process = 1; | |
1601 | } | |
fa593d66 PA |
1602 | else if (strcmp (p, "qRelocInsn+") == 0) |
1603 | { | |
1604 | /* GDB supports relocate instruction requests. */ | |
1605 | gdb_supports_qRelocInsn = 1; | |
1606 | } | |
d149dd1d PA |
1607 | else |
1608 | target_process_qsupported (p); | |
1609 | ||
1610 | free (p); | |
1611 | } | |
1612 | ||
1613 | free (qsupported); | |
1614 | } | |
95954743 | 1615 | |
9b224c5e PA |
1616 | sprintf (own_buf, |
1617 | "PacketSize=%x;QPassSignals+;QProgramSignals+", | |
1618 | PBUFSIZ - 1); | |
0876f84a | 1619 | |
2268b414 JK |
1620 | if (the_target->qxfer_libraries_svr4 != NULL) |
1621 | strcat (own_buf, ";qXfer:libraries-svr4:read+"); | |
1622 | else | |
1623 | { | |
1624 | /* We do not have any hook to indicate whether the non-SVR4 target | |
1625 | backend supports qXfer:libraries:read, so always report it. */ | |
1626 | strcat (own_buf, ";qXfer:libraries:read+"); | |
1627 | } | |
255e7678 | 1628 | |
0876f84a | 1629 | if (the_target->read_auxv != NULL) |
9f2e1e63 | 1630 | strcat (own_buf, ";qXfer:auxv:read+"); |
2d717e4f | 1631 | |
0e7f50da UW |
1632 | if (the_target->qxfer_spu != NULL) |
1633 | strcat (own_buf, ";qXfer:spu:read+;qXfer:spu:write+"); | |
0876f84a | 1634 | |
4aa995e1 PA |
1635 | if (the_target->qxfer_siginfo != NULL) |
1636 | strcat (own_buf, ";qXfer:siginfo:read+;qXfer:siginfo:write+"); | |
1637 | ||
78d85199 YQ |
1638 | if (the_target->read_loadmap != NULL) |
1639 | strcat (own_buf, ";qXfer:fdpic:read+"); | |
1640 | ||
221c031f UW |
1641 | /* We always report qXfer:features:read, as targets may |
1642 | install XML files on a subsequent call to arch_setup. | |
1643 | If we reported to GDB on startup that we don't support | |
1644 | qXfer:feature:read at all, we will never be re-queried. */ | |
1645 | strcat (own_buf, ";qXfer:features:read+"); | |
23181151 | 1646 | |
a6f3e723 SL |
1647 | if (transport_is_reliable) |
1648 | strcat (own_buf, ";QStartNoAckMode+"); | |
07e059b5 VP |
1649 | |
1650 | if (the_target->qxfer_osdata != NULL) | |
1b3f6016 | 1651 | strcat (own_buf, ";qXfer:osdata:read+"); |
07e059b5 | 1652 | |
cf8fd78b PA |
1653 | if (target_supports_multi_process ()) |
1654 | strcat (own_buf, ";multiprocess+"); | |
95954743 | 1655 | |
bd99dc85 PA |
1656 | if (target_supports_non_stop ()) |
1657 | strcat (own_buf, ";QNonStop+"); | |
1658 | ||
03583c20 UW |
1659 | if (target_supports_disable_randomization ()) |
1660 | strcat (own_buf, ";QDisableRandomization+"); | |
1661 | ||
dc146f7c VP |
1662 | strcat (own_buf, ";qXfer:threads:read+"); |
1663 | ||
219f2f23 PA |
1664 | if (target_supports_tracepoints ()) |
1665 | { | |
1666 | strcat (own_buf, ";ConditionalTracepoints+"); | |
1667 | strcat (own_buf, ";TraceStateVariables+"); | |
1668 | strcat (own_buf, ";TracepointSource+"); | |
8336d594 | 1669 | strcat (own_buf, ";DisconnectedTracing+"); |
fa593d66 PA |
1670 | if (gdb_supports_qRelocInsn && target_supports_fast_tracepoints ()) |
1671 | strcat (own_buf, ";FastTracepoints+"); | |
0fb4aa4b | 1672 | strcat (own_buf, ";StaticTracepoints+"); |
1e4d1764 | 1673 | strcat (own_buf, ";InstallInTrace+"); |
0fb4aa4b | 1674 | strcat (own_buf, ";qXfer:statictrace:read+"); |
b3b9301e | 1675 | strcat (own_buf, ";qXfer:traceframe-info:read+"); |
d248b706 | 1676 | strcat (own_buf, ";EnableDisableTracepoints+"); |
3065dfb6 | 1677 | strcat (own_buf, ";tracenz+"); |
219f2f23 PA |
1678 | } |
1679 | ||
9f3a5c85 LM |
1680 | /* Support target-side breakpoint conditions. */ |
1681 | strcat (own_buf, ";ConditionalBreakpoints+"); | |
1682 | ||
d1feda86 YQ |
1683 | if (target_supports_agent ()) |
1684 | strcat (own_buf, ";QAgent+"); | |
1685 | ||
be2a5f71 DJ |
1686 | return; |
1687 | } | |
1688 | ||
dae5f5cf DJ |
1689 | /* Thread-local storage support. */ |
1690 | if (the_target->get_tls_address != NULL | |
1691 | && strncmp ("qGetTLSAddr:", own_buf, 12) == 0) | |
1692 | { | |
1693 | char *p = own_buf + 12; | |
5b1c542e | 1694 | CORE_ADDR parts[2], address = 0; |
dae5f5cf | 1695 | int i, err; |
95954743 | 1696 | ptid_t ptid = null_ptid; |
dae5f5cf | 1697 | |
2d717e4f DJ |
1698 | require_running (own_buf); |
1699 | ||
dae5f5cf DJ |
1700 | for (i = 0; i < 3; i++) |
1701 | { | |
1702 | char *p2; | |
1703 | int len; | |
1704 | ||
1705 | if (p == NULL) | |
1706 | break; | |
1707 | ||
1708 | p2 = strchr (p, ','); | |
1709 | if (p2) | |
1710 | { | |
1711 | len = p2 - p; | |
1712 | p2++; | |
1713 | } | |
1714 | else | |
1715 | { | |
1716 | len = strlen (p); | |
1717 | p2 = NULL; | |
1718 | } | |
1719 | ||
5b1c542e | 1720 | if (i == 0) |
95954743 | 1721 | ptid = read_ptid (p, NULL); |
5b1c542e PA |
1722 | else |
1723 | decode_address (&parts[i - 1], p, len); | |
dae5f5cf DJ |
1724 | p = p2; |
1725 | } | |
1726 | ||
1727 | if (p != NULL || i < 3) | |
1728 | err = 1; | |
1729 | else | |
1730 | { | |
e09875d4 | 1731 | struct thread_info *thread = find_thread_ptid (ptid); |
dae5f5cf DJ |
1732 | |
1733 | if (thread == NULL) | |
1734 | err = 2; | |
1735 | else | |
5b1c542e | 1736 | err = the_target->get_tls_address (thread, parts[0], parts[1], |
dae5f5cf DJ |
1737 | &address); |
1738 | } | |
1739 | ||
1740 | if (err == 0) | |
1741 | { | |
c6f46ca0 | 1742 | strcpy (own_buf, paddress(address)); |
dae5f5cf DJ |
1743 | return; |
1744 | } | |
1745 | else if (err > 0) | |
1746 | { | |
1747 | write_enn (own_buf); | |
1748 | return; | |
1749 | } | |
1750 | ||
1751 | /* Otherwise, pretend we do not understand this packet. */ | |
1752 | } | |
1753 | ||
711e434b PM |
1754 | /* Windows OS Thread Information Block address support. */ |
1755 | if (the_target->get_tib_address != NULL | |
1756 | && strncmp ("qGetTIBAddr:", own_buf, 12) == 0) | |
1757 | { | |
1758 | char *annex; | |
1759 | int n; | |
1760 | CORE_ADDR tlb; | |
1761 | ptid_t ptid = read_ptid (own_buf + 12, &annex); | |
1762 | ||
1763 | n = (*the_target->get_tib_address) (ptid, &tlb); | |
1764 | if (n == 1) | |
1765 | { | |
c6f46ca0 | 1766 | strcpy (own_buf, paddress(tlb)); |
711e434b PM |
1767 | return; |
1768 | } | |
1769 | else if (n == 0) | |
1770 | { | |
1771 | write_enn (own_buf); | |
1772 | return; | |
1773 | } | |
1774 | return; | |
1775 | } | |
1776 | ||
c74d0ad8 DJ |
1777 | /* Handle "monitor" commands. */ |
1778 | if (strncmp ("qRcmd,", own_buf, 6) == 0) | |
1779 | { | |
aef93bd7 | 1780 | char *mon = malloc (PBUFSIZ); |
c74d0ad8 DJ |
1781 | int len = strlen (own_buf + 6); |
1782 | ||
aef93bd7 DE |
1783 | if (mon == NULL) |
1784 | { | |
1785 | write_enn (own_buf); | |
1786 | return; | |
1787 | } | |
1788 | ||
d41b6bb4 | 1789 | if ((len % 2) != 0 || unhexify (mon, own_buf + 6, len / 2) != len / 2) |
c74d0ad8 DJ |
1790 | { |
1791 | write_enn (own_buf); | |
1792 | free (mon); | |
1793 | return; | |
1794 | } | |
1795 | mon[len / 2] = '\0'; | |
1796 | ||
1797 | write_ok (own_buf); | |
1798 | ||
cdbfd419 PP |
1799 | if (the_target->handle_monitor_command == NULL |
1800 | || (*the_target->handle_monitor_command) (mon) == 0) | |
1801 | /* Default processing. */ | |
d73f2619 | 1802 | handle_monitor_command (mon, own_buf); |
c74d0ad8 DJ |
1803 | |
1804 | free (mon); | |
1805 | return; | |
1806 | } | |
1807 | ||
493e2a69 MS |
1808 | if (strncmp ("qSearch:memory:", own_buf, |
1809 | sizeof ("qSearch:memory:") - 1) == 0) | |
08388c79 DE |
1810 | { |
1811 | require_running (own_buf); | |
1812 | handle_search_memory (own_buf, packet_len); | |
1813 | return; | |
1814 | } | |
1815 | ||
95954743 PA |
1816 | if (strcmp (own_buf, "qAttached") == 0 |
1817 | || strncmp (own_buf, "qAttached:", sizeof ("qAttached:") - 1) == 0) | |
0b16c5cf | 1818 | { |
95954743 PA |
1819 | struct process_info *process; |
1820 | ||
1821 | if (own_buf[sizeof ("qAttached") - 1]) | |
1822 | { | |
1823 | int pid = strtoul (own_buf + sizeof ("qAttached:") - 1, NULL, 16); | |
1824 | process = (struct process_info *) | |
1825 | find_inferior_id (&all_processes, pid_to_ptid (pid)); | |
1826 | } | |
1827 | else | |
1828 | { | |
1829 | require_running (own_buf); | |
1830 | process = current_process (); | |
1831 | } | |
1832 | ||
1833 | if (process == NULL) | |
1834 | { | |
1835 | write_enn (own_buf); | |
1836 | return; | |
1837 | } | |
1838 | ||
1839 | strcpy (own_buf, process->attached ? "1" : "0"); | |
0b16c5cf PA |
1840 | return; |
1841 | } | |
1842 | ||
30ba68cb MS |
1843 | if (strncmp ("qCRC:", own_buf, 5) == 0) |
1844 | { | |
1845 | /* CRC check (compare-section). */ | |
1846 | char *comma; | |
1847 | CORE_ADDR base; | |
1848 | int len; | |
1849 | unsigned long long crc; | |
1850 | ||
1851 | require_running (own_buf); | |
2280c721 | 1852 | base = strtoul (own_buf + 5, &comma, 16); |
30ba68cb MS |
1853 | if (*comma++ != ',') |
1854 | { | |
1855 | write_enn (own_buf); | |
1856 | return; | |
1857 | } | |
1858 | len = strtoul (comma, NULL, 16); | |
1859 | crc = crc32 (base, len, 0xffffffff); | |
1860 | /* Check for memory failure. */ | |
1861 | if (crc == (unsigned long long) -1) | |
1862 | { | |
1863 | write_enn (own_buf); | |
1864 | return; | |
1865 | } | |
1866 | sprintf (own_buf, "C%lx", (unsigned long) crc); | |
1867 | return; | |
1868 | } | |
1869 | ||
d08aafef PA |
1870 | if (handle_qxfer (own_buf, packet_len, new_packet_len_p)) |
1871 | return; | |
1872 | ||
219f2f23 PA |
1873 | if (target_supports_tracepoints () && handle_tracepoint_query (own_buf)) |
1874 | return; | |
1875 | ||
ce3a066d DJ |
1876 | /* Otherwise we didn't know what packet it was. Say we didn't |
1877 | understand it. */ | |
1878 | own_buf[0] = 0; | |
1879 | } | |
1880 | ||
ce1a5b52 PA |
1881 | static void gdb_wants_all_threads_stopped (void); |
1882 | ||
64386c31 DJ |
1883 | /* Parse vCont packets. */ |
1884 | void | |
5b1c542e | 1885 | handle_v_cont (char *own_buf) |
64386c31 DJ |
1886 | { |
1887 | char *p, *q; | |
1888 | int n = 0, i = 0; | |
2bd7c093 | 1889 | struct thread_resume *resume_info; |
95954743 | 1890 | struct thread_resume default_action = {{0}}; |
64386c31 DJ |
1891 | |
1892 | /* Count the number of semicolons in the packet. There should be one | |
1893 | for every action. */ | |
1894 | p = &own_buf[5]; | |
1895 | while (p) | |
1896 | { | |
1897 | n++; | |
1898 | p++; | |
1899 | p = strchr (p, ';'); | |
1900 | } | |
2bd7c093 PA |
1901 | |
1902 | resume_info = malloc (n * sizeof (resume_info[0])); | |
aef93bd7 DE |
1903 | if (resume_info == NULL) |
1904 | goto err; | |
64386c31 | 1905 | |
64386c31 | 1906 | p = &own_buf[5]; |
64386c31 DJ |
1907 | while (*p) |
1908 | { | |
1909 | p++; | |
1910 | ||
64386c31 | 1911 | if (p[0] == 's' || p[0] == 'S') |
bd99dc85 | 1912 | resume_info[i].kind = resume_step; |
64386c31 | 1913 | else if (p[0] == 'c' || p[0] == 'C') |
bd99dc85 PA |
1914 | resume_info[i].kind = resume_continue; |
1915 | else if (p[0] == 't') | |
1916 | resume_info[i].kind = resume_stop; | |
64386c31 DJ |
1917 | else |
1918 | goto err; | |
1919 | ||
1920 | if (p[0] == 'S' || p[0] == 'C') | |
1921 | { | |
1922 | int sig; | |
1923 | sig = strtol (p + 1, &q, 16); | |
1924 | if (p == q) | |
1925 | goto err; | |
1926 | p = q; | |
1927 | ||
1928 | if (!target_signal_to_host_p (sig)) | |
1929 | goto err; | |
1930 | resume_info[i].sig = target_signal_to_host (sig); | |
1931 | } | |
1932 | else | |
1933 | { | |
1934 | resume_info[i].sig = 0; | |
1935 | p = p + 1; | |
1936 | } | |
1937 | ||
1938 | if (p[0] == 0) | |
1939 | { | |
95954743 | 1940 | resume_info[i].thread = minus_one_ptid; |
64386c31 DJ |
1941 | default_action = resume_info[i]; |
1942 | ||
1943 | /* Note: we don't increment i here, we'll overwrite this entry | |
1944 | the next time through. */ | |
1945 | } | |
1946 | else if (p[0] == ':') | |
1947 | { | |
95954743 | 1948 | ptid_t ptid = read_ptid (p + 1, &q); |
a06660f7 | 1949 | |
64386c31 DJ |
1950 | if (p == q) |
1951 | goto err; | |
1952 | p = q; | |
1953 | if (p[0] != ';' && p[0] != 0) | |
1954 | goto err; | |
1955 | ||
95954743 | 1956 | resume_info[i].thread = ptid; |
a06660f7 | 1957 | |
64386c31 DJ |
1958 | i++; |
1959 | } | |
1960 | } | |
1961 | ||
2bd7c093 PA |
1962 | if (i < n) |
1963 | resume_info[i] = default_action; | |
64386c31 DJ |
1964 | |
1965 | /* Still used in occasional places in the backend. */ | |
bd99dc85 | 1966 | if (n == 1 |
95954743 | 1967 | && !ptid_equal (resume_info[0].thread, minus_one_ptid) |
bd99dc85 | 1968 | && resume_info[0].kind != resume_stop) |
64386c31 DJ |
1969 | cont_thread = resume_info[0].thread; |
1970 | else | |
95954743 | 1971 | cont_thread = minus_one_ptid; |
dc3f8883 | 1972 | set_desired_inferior (0); |
64386c31 | 1973 | |
bd99dc85 PA |
1974 | if (!non_stop) |
1975 | enable_async_io (); | |
1976 | ||
2bd7c093 | 1977 | (*the_target->resume) (resume_info, n); |
64386c31 DJ |
1978 | |
1979 | free (resume_info); | |
1980 | ||
bd99dc85 PA |
1981 | if (non_stop) |
1982 | write_ok (own_buf); | |
1983 | else | |
1984 | { | |
95954743 | 1985 | last_ptid = mywait (minus_one_ptid, &last_status, 0, 1); |
ce1a5b52 | 1986 | |
d20a8ad9 PA |
1987 | if (last_status.kind != TARGET_WAITKIND_EXITED |
1988 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
1989 | current_inferior->last_status = last_status; | |
1990 | ||
ce1a5b52 PA |
1991 | /* From the client's perspective, all-stop mode always stops all |
1992 | threads implicitly (and the target backend has already done | |
1993 | so by now). Tag all threads as "want-stopped", so we don't | |
1994 | resume them implicitly without the client telling us to. */ | |
1995 | gdb_wants_all_threads_stopped (); | |
bd99dc85 PA |
1996 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
1997 | disable_async_io (); | |
6bd31874 JB |
1998 | |
1999 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
2000 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2001 | mourn_inferior (find_process_pid (ptid_get_pid (last_ptid))); | |
bd99dc85 | 2002 | } |
64386c31 DJ |
2003 | return; |
2004 | ||
2005 | err: | |
255e7678 | 2006 | write_enn (own_buf); |
64386c31 DJ |
2007 | free (resume_info); |
2008 | return; | |
2009 | } | |
2010 | ||
2d717e4f DJ |
2011 | /* Attach to a new program. Return 1 if successful, 0 if failure. */ |
2012 | int | |
5b1c542e | 2013 | handle_v_attach (char *own_buf) |
2d717e4f DJ |
2014 | { |
2015 | int pid; | |
2016 | ||
2017 | pid = strtol (own_buf + 8, NULL, 16); | |
5b1c542e | 2018 | if (pid != 0 && attach_inferior (pid) == 0) |
2d717e4f | 2019 | { |
aeba519e PA |
2020 | /* Don't report shared library events after attaching, even if |
2021 | some libraries are preloaded. GDB will always poll the | |
2022 | library list. Avoids the "stopped by shared library event" | |
2023 | notice on the GDB side. */ | |
2024 | dlls_changed = 0; | |
bd99dc85 PA |
2025 | |
2026 | if (non_stop) | |
2027 | { | |
2028 | /* In non-stop, we don't send a resume reply. Stop events | |
2029 | will follow up using the normal notification | |
2030 | mechanism. */ | |
2031 | write_ok (own_buf); | |
2032 | } | |
2033 | else | |
2034 | prepare_resume_reply (own_buf, last_ptid, &last_status); | |
2035 | ||
2d717e4f DJ |
2036 | return 1; |
2037 | } | |
2038 | else | |
2039 | { | |
2040 | write_enn (own_buf); | |
2041 | return 0; | |
2042 | } | |
2043 | } | |
2044 | ||
2045 | /* Run a new program. Return 1 if successful, 0 if failure. */ | |
2046 | static int | |
5b1c542e | 2047 | handle_v_run (char *own_buf) |
2d717e4f | 2048 | { |
aef93bd7 | 2049 | char *p, *next_p, **new_argv; |
2d717e4f DJ |
2050 | int i, new_argc; |
2051 | ||
2052 | new_argc = 0; | |
2053 | for (p = own_buf + strlen ("vRun;"); p && *p; p = strchr (p, ';')) | |
2054 | { | |
2055 | p++; | |
2056 | new_argc++; | |
2057 | } | |
2058 | ||
aef93bd7 DE |
2059 | new_argv = calloc (new_argc + 2, sizeof (char *)); |
2060 | if (new_argv == NULL) | |
2061 | { | |
2062 | write_enn (own_buf); | |
2063 | return 0; | |
2064 | } | |
2065 | ||
2d717e4f DJ |
2066 | i = 0; |
2067 | for (p = own_buf + strlen ("vRun;"); *p; p = next_p) | |
2068 | { | |
2069 | next_p = strchr (p, ';'); | |
2070 | if (next_p == NULL) | |
2071 | next_p = p + strlen (p); | |
2072 | ||
2073 | if (i == 0 && p == next_p) | |
2074 | new_argv[i] = NULL; | |
2075 | else | |
2076 | { | |
aef93bd7 | 2077 | /* FIXME: Fail request if out of memory instead of dying. */ |
bca929d3 | 2078 | new_argv[i] = xmalloc (1 + (next_p - p) / 2); |
2d717e4f DJ |
2079 | unhexify (new_argv[i], p, (next_p - p) / 2); |
2080 | new_argv[i][(next_p - p) / 2] = '\0'; | |
2081 | } | |
2082 | ||
2083 | if (*next_p) | |
2084 | next_p++; | |
2085 | i++; | |
2086 | } | |
2087 | new_argv[i] = NULL; | |
2088 | ||
2089 | if (new_argv[0] == NULL) | |
2090 | { | |
f142445f DJ |
2091 | /* GDB didn't specify a program to run. Use the program from the |
2092 | last run with the new argument list. */ | |
9b710a42 | 2093 | |
2d717e4f DJ |
2094 | if (program_argv == NULL) |
2095 | { | |
2096 | write_enn (own_buf); | |
b2c04452 | 2097 | freeargv (new_argv); |
2d717e4f DJ |
2098 | return 0; |
2099 | } | |
2100 | ||
aef93bd7 DE |
2101 | new_argv[0] = strdup (program_argv[0]); |
2102 | if (new_argv[0] == NULL) | |
2103 | { | |
aef93bd7 | 2104 | write_enn (own_buf); |
b2c04452 | 2105 | freeargv (new_argv); |
aef93bd7 | 2106 | return 0; |
1b3f6016 | 2107 | } |
2d717e4f | 2108 | } |
f142445f | 2109 | |
aef93bd7 DE |
2110 | /* Free the old argv and install the new one. */ |
2111 | freeargv (program_argv); | |
f142445f | 2112 | program_argv = new_argv; |
2d717e4f | 2113 | |
5b1c542e PA |
2114 | start_inferior (program_argv); |
2115 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
2d717e4f | 2116 | { |
5b1c542e | 2117 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
bd99dc85 PA |
2118 | |
2119 | /* In non-stop, sending a resume reply doesn't set the general | |
2120 | thread, but GDB assumes a vRun sets it (this is so GDB can | |
2121 | query which is the main thread of the new inferior. */ | |
2122 | if (non_stop) | |
2123 | general_thread = last_ptid; | |
2124 | ||
2d717e4f DJ |
2125 | return 1; |
2126 | } | |
2127 | else | |
2128 | { | |
2129 | write_enn (own_buf); | |
2130 | return 0; | |
2131 | } | |
2132 | } | |
2133 | ||
95954743 PA |
2134 | /* Kill process. Return 1 if successful, 0 if failure. */ |
2135 | int | |
2136 | handle_v_kill (char *own_buf) | |
2137 | { | |
2138 | int pid; | |
2139 | char *p = &own_buf[6]; | |
0f54c268 PM |
2140 | if (multi_process) |
2141 | pid = strtol (p, NULL, 16); | |
2142 | else | |
2143 | pid = signal_pid; | |
95954743 PA |
2144 | if (pid != 0 && kill_inferior (pid) == 0) |
2145 | { | |
2146 | last_status.kind = TARGET_WAITKIND_SIGNALLED; | |
2147 | last_status.value.sig = TARGET_SIGNAL_KILL; | |
2148 | last_ptid = pid_to_ptid (pid); | |
2149 | discard_queued_stop_replies (pid); | |
2150 | write_ok (own_buf); | |
2151 | return 1; | |
2152 | } | |
2153 | else | |
2154 | { | |
2155 | write_enn (own_buf); | |
2156 | return 0; | |
2157 | } | |
2158 | } | |
2159 | ||
bd99dc85 PA |
2160 | /* Handle a 'vStopped' packet. */ |
2161 | static void | |
2162 | handle_v_stopped (char *own_buf) | |
2163 | { | |
2164 | /* If we're waiting for GDB to acknowledge a pending stop reply, | |
2165 | consider that done. */ | |
2166 | if (notif_queue) | |
2167 | { | |
2168 | struct vstop_notif *head; | |
2169 | ||
2170 | if (remote_debug) | |
95954743 PA |
2171 | fprintf (stderr, "vStopped: acking %s\n", |
2172 | target_pid_to_str (notif_queue->ptid)); | |
bd99dc85 PA |
2173 | |
2174 | head = notif_queue; | |
2175 | notif_queue = notif_queue->next; | |
2176 | free (head); | |
2177 | } | |
2178 | ||
2179 | /* Push another stop reply, or if there are no more left, an OK. */ | |
2180 | send_next_stop_reply (own_buf); | |
2181 | } | |
2182 | ||
64386c31 DJ |
2183 | /* Handle all of the extended 'v' packets. */ |
2184 | void | |
5b1c542e | 2185 | handle_v_requests (char *own_buf, int packet_len, int *new_packet_len) |
64386c31 | 2186 | { |
db42f210 | 2187 | if (!disable_packet_vCont) |
64386c31 | 2188 | { |
db42f210 PA |
2189 | if (strncmp (own_buf, "vCont;", 6) == 0) |
2190 | { | |
2191 | require_running (own_buf); | |
5b1c542e | 2192 | handle_v_cont (own_buf); |
db42f210 PA |
2193 | return; |
2194 | } | |
64386c31 | 2195 | |
db42f210 PA |
2196 | if (strncmp (own_buf, "vCont?", 6) == 0) |
2197 | { | |
bd99dc85 | 2198 | strcpy (own_buf, "vCont;c;C;s;S;t"); |
db42f210 PA |
2199 | return; |
2200 | } | |
64386c31 DJ |
2201 | } |
2202 | ||
a6b151f1 DJ |
2203 | if (strncmp (own_buf, "vFile:", 6) == 0 |
2204 | && handle_vFile (own_buf, packet_len, new_packet_len)) | |
2205 | return; | |
2206 | ||
2d717e4f DJ |
2207 | if (strncmp (own_buf, "vAttach;", 8) == 0) |
2208 | { | |
901f9912 | 2209 | if ((!extended_protocol || !multi_process) && target_running ()) |
2d717e4f | 2210 | { |
fd96d250 PA |
2211 | fprintf (stderr, "Already debugging a process\n"); |
2212 | write_enn (own_buf); | |
2213 | return; | |
2d717e4f | 2214 | } |
5b1c542e | 2215 | handle_v_attach (own_buf); |
2d717e4f DJ |
2216 | return; |
2217 | } | |
2218 | ||
2219 | if (strncmp (own_buf, "vRun;", 5) == 0) | |
2220 | { | |
901f9912 | 2221 | if ((!extended_protocol || !multi_process) && target_running ()) |
2d717e4f | 2222 | { |
fd96d250 PA |
2223 | fprintf (stderr, "Already debugging a process\n"); |
2224 | write_enn (own_buf); | |
2225 | return; | |
2d717e4f | 2226 | } |
5b1c542e | 2227 | handle_v_run (own_buf); |
2d717e4f DJ |
2228 | return; |
2229 | } | |
2230 | ||
95954743 PA |
2231 | if (strncmp (own_buf, "vKill;", 6) == 0) |
2232 | { | |
2233 | if (!target_running ()) | |
2234 | { | |
2235 | fprintf (stderr, "No process to kill\n"); | |
2236 | write_enn (own_buf); | |
2237 | return; | |
2238 | } | |
2239 | handle_v_kill (own_buf); | |
2240 | return; | |
2241 | } | |
2242 | ||
bd99dc85 PA |
2243 | if (strncmp (own_buf, "vStopped", 8) == 0) |
2244 | { | |
2245 | handle_v_stopped (own_buf); | |
2246 | return; | |
2247 | } | |
2248 | ||
64386c31 DJ |
2249 | /* Otherwise we didn't know what packet it was. Say we didn't |
2250 | understand it. */ | |
2251 | own_buf[0] = 0; | |
2252 | return; | |
2253 | } | |
2254 | ||
bd99dc85 PA |
2255 | /* Resume inferior and wait for another event. In non-stop mode, |
2256 | don't really wait here, but return immediatelly to the event | |
2257 | loop. */ | |
1fd7cdc2 | 2258 | static void |
5b1c542e | 2259 | myresume (char *own_buf, int step, int sig) |
64386c31 DJ |
2260 | { |
2261 | struct thread_resume resume_info[2]; | |
2262 | int n = 0; | |
2bd7c093 | 2263 | int valid_cont_thread; |
a20d5e98 DJ |
2264 | |
2265 | set_desired_inferior (0); | |
64386c31 | 2266 | |
95954743 PA |
2267 | valid_cont_thread = (!ptid_equal (cont_thread, null_ptid) |
2268 | && !ptid_equal (cont_thread, minus_one_ptid)); | |
2bd7c093 PA |
2269 | |
2270 | if (step || sig || valid_cont_thread) | |
64386c31 DJ |
2271 | { |
2272 | resume_info[0].thread | |
2273 | = ((struct inferior_list_entry *) current_inferior)->id; | |
bd99dc85 PA |
2274 | if (step) |
2275 | resume_info[0].kind = resume_step; | |
2276 | else | |
2277 | resume_info[0].kind = resume_continue; | |
64386c31 | 2278 | resume_info[0].sig = sig; |
64386c31 DJ |
2279 | n++; |
2280 | } | |
2bd7c093 PA |
2281 | |
2282 | if (!valid_cont_thread) | |
2283 | { | |
95954743 | 2284 | resume_info[n].thread = minus_one_ptid; |
bd99dc85 | 2285 | resume_info[n].kind = resume_continue; |
2bd7c093 PA |
2286 | resume_info[n].sig = 0; |
2287 | n++; | |
2288 | } | |
64386c31 | 2289 | |
bd99dc85 PA |
2290 | if (!non_stop) |
2291 | enable_async_io (); | |
2292 | ||
2bd7c093 | 2293 | (*the_target->resume) (resume_info, n); |
bd99dc85 PA |
2294 | |
2295 | if (non_stop) | |
2296 | write_ok (own_buf); | |
2297 | else | |
2298 | { | |
95954743 | 2299 | last_ptid = mywait (minus_one_ptid, &last_status, 0, 1); |
d20a8ad9 PA |
2300 | |
2301 | if (last_status.kind != TARGET_WAITKIND_EXITED | |
2302 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
2303 | { | |
2304 | current_inferior->last_resume_kind = resume_stop; | |
2305 | current_inferior->last_status = last_status; | |
2306 | } | |
2307 | ||
bd99dc85 PA |
2308 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
2309 | disable_async_io (); | |
6bd31874 JB |
2310 | |
2311 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
2312 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2313 | mourn_inferior (find_process_pid (ptid_get_pid (last_ptid))); | |
bd99dc85 PA |
2314 | } |
2315 | } | |
2316 | ||
2317 | /* Callback for for_each_inferior. Make a new stop reply for each | |
2318 | stopped thread. */ | |
2319 | ||
95954743 PA |
2320 | static int |
2321 | queue_stop_reply_callback (struct inferior_list_entry *entry, void *arg) | |
bd99dc85 | 2322 | { |
8336d594 | 2323 | struct thread_info *thread = (struct thread_info *) entry; |
bd99dc85 | 2324 | |
8336d594 PA |
2325 | /* For now, assume targets that don't have this callback also don't |
2326 | manage the thread's last_status field. */ | |
2327 | if (the_target->thread_stopped == NULL) | |
95954743 | 2328 | { |
8336d594 PA |
2329 | /* Pass the last stop reply back to GDB, but don't notify |
2330 | yet. */ | |
2331 | queue_stop_reply (entry->id, &thread->last_status); | |
2332 | } | |
2333 | else | |
2334 | { | |
2335 | if (thread_stopped (thread)) | |
2336 | { | |
2337 | if (debug_threads) | |
493e2a69 MS |
2338 | fprintf (stderr, |
2339 | "Reporting thread %s as already stopped with %s\n", | |
8336d594 PA |
2340 | target_pid_to_str (entry->id), |
2341 | target_waitstatus_to_string (&thread->last_status)); | |
2342 | ||
d20a8ad9 PA |
2343 | gdb_assert (thread->last_status.kind != TARGET_WAITKIND_IGNORE); |
2344 | ||
8336d594 PA |
2345 | /* Pass the last stop reply back to GDB, but don't notify |
2346 | yet. */ | |
2347 | queue_stop_reply (entry->id, &thread->last_status); | |
2348 | } | |
95954743 PA |
2349 | } |
2350 | ||
2351 | return 0; | |
64386c31 DJ |
2352 | } |
2353 | ||
ce1a5b52 PA |
2354 | /* Set this inferior threads's state as "want-stopped". We won't |
2355 | resume this thread until the client gives us another action for | |
2356 | it. */ | |
8336d594 PA |
2357 | |
2358 | static void | |
2359 | gdb_wants_thread_stopped (struct inferior_list_entry *entry) | |
2360 | { | |
2361 | struct thread_info *thread = (struct thread_info *) entry; | |
2362 | ||
2363 | thread->last_resume_kind = resume_stop; | |
2364 | ||
2365 | if (thread->last_status.kind == TARGET_WAITKIND_IGNORE) | |
2366 | { | |
ce1a5b52 PA |
2367 | /* Most threads are stopped implicitly (all-stop); tag that with |
2368 | signal 0. */ | |
8336d594 PA |
2369 | thread->last_status.kind = TARGET_WAITKIND_STOPPED; |
2370 | thread->last_status.value.sig = TARGET_SIGNAL_0; | |
2371 | } | |
2372 | } | |
2373 | ||
2374 | /* Set all threads' states as "want-stopped". */ | |
2375 | ||
2376 | static void | |
2377 | gdb_wants_all_threads_stopped (void) | |
2378 | { | |
2379 | for_each_inferior (&all_threads, gdb_wants_thread_stopped); | |
2380 | } | |
2381 | ||
2382 | /* Clear the gdb_detached flag of every process. */ | |
2383 | ||
2384 | static void | |
2385 | gdb_reattached_process (struct inferior_list_entry *entry) | |
2386 | { | |
2387 | struct process_info *process = (struct process_info *) entry; | |
2388 | ||
2389 | process->gdb_detached = 0; | |
2390 | } | |
2391 | ||
5b1c542e PA |
2392 | /* Status handler for the '?' packet. */ |
2393 | ||
2394 | static void | |
2395 | handle_status (char *own_buf) | |
2396 | { | |
8336d594 PA |
2397 | /* GDB is connected, don't forward events to the target anymore. */ |
2398 | for_each_inferior (&all_processes, gdb_reattached_process); | |
bd99dc85 PA |
2399 | |
2400 | /* In non-stop mode, we must send a stop reply for each stopped | |
2401 | thread. In all-stop mode, just send one for the first stopped | |
2402 | thread we find. */ | |
2403 | ||
2404 | if (non_stop) | |
2405 | { | |
8336d594 PA |
2406 | discard_queued_stop_replies (-1); |
2407 | find_inferior (&all_threads, queue_stop_reply_callback, NULL); | |
bd99dc85 PA |
2408 | |
2409 | /* The first is sent immediatly. OK is sent if there is no | |
2410 | stopped thread, which is the same handling of the vStopped | |
2411 | packet (by design). */ | |
2412 | send_next_stop_reply (own_buf); | |
2413 | } | |
5b1c542e | 2414 | else |
bd99dc85 | 2415 | { |
7984d532 | 2416 | pause_all (0); |
fa593d66 | 2417 | stabilize_threads (); |
8336d594 PA |
2418 | gdb_wants_all_threads_stopped (); |
2419 | ||
bd99dc85 | 2420 | if (all_threads.head) |
8336d594 PA |
2421 | { |
2422 | struct target_waitstatus status; | |
2423 | ||
2424 | status.kind = TARGET_WAITKIND_STOPPED; | |
2425 | status.value.sig = TARGET_SIGNAL_TRAP; | |
2426 | prepare_resume_reply (own_buf, | |
2427 | all_threads.head->id, &status); | |
2428 | } | |
bd99dc85 PA |
2429 | else |
2430 | strcpy (own_buf, "W00"); | |
2431 | } | |
5b1c542e PA |
2432 | } |
2433 | ||
dd24457d DJ |
2434 | static void |
2435 | gdbserver_version (void) | |
2436 | { | |
c16158bc | 2437 | printf ("GNU gdbserver %s%s\n" |
67827812 | 2438 | "Copyright (C) 2012 Free Software Foundation, Inc.\n" |
493e2a69 MS |
2439 | "gdbserver is free software, covered by the " |
2440 | "GNU General Public License.\n" | |
dd24457d | 2441 | "This gdbserver was configured as \"%s\"\n", |
c16158bc | 2442 | PKGVERSION, version, host_name); |
dd24457d DJ |
2443 | } |
2444 | ||
0bc68c49 | 2445 | static void |
c16158bc | 2446 | gdbserver_usage (FILE *stream) |
0bc68c49 | 2447 | { |
c16158bc JM |
2448 | fprintf (stream, "Usage:\tgdbserver [OPTIONS] COMM PROG [ARGS ...]\n" |
2449 | "\tgdbserver [OPTIONS] --attach COMM PID\n" | |
2450 | "\tgdbserver [OPTIONS] --multi COMM\n" | |
2451 | "\n" | |
2452 | "COMM may either be a tty device (for serial debugging), or \n" | |
2453 | "HOST:PORT to listen for a TCP connection.\n" | |
2454 | "\n" | |
2455 | "Options:\n" | |
62709adf PA |
2456 | " --debug Enable general debugging output.\n" |
2457 | " --remote-debug Enable remote protocol debugging output.\n" | |
2458 | " --version Display version information and exit.\n" | |
03f2bd59 JK |
2459 | " --wrapper WRAPPER -- Run WRAPPER to start new programs.\n" |
2460 | " --once Exit after the first connection has " | |
2461 | "closed.\n"); | |
c16158bc JM |
2462 | if (REPORT_BUGS_TO[0] && stream == stdout) |
2463 | fprintf (stream, "Report bugs to \"%s\".\n", REPORT_BUGS_TO); | |
0bc68c49 DJ |
2464 | } |
2465 | ||
db42f210 PA |
2466 | static void |
2467 | gdbserver_show_disableable (FILE *stream) | |
2468 | { | |
2469 | fprintf (stream, "Disableable packets:\n" | |
2470 | " vCont \tAll vCont packets\n" | |
2471 | " qC \tQuerying the current thread\n" | |
2472 | " qfThreadInfo\tThread listing\n" | |
493e2a69 MS |
2473 | " Tthread \tPassing the thread specifier in the " |
2474 | "T stop reply packet\n" | |
db42f210 PA |
2475 | " threads \tAll of the above\n"); |
2476 | } | |
2477 | ||
2478 | ||
2d717e4f DJ |
2479 | #undef require_running |
2480 | #define require_running(BUF) \ | |
2481 | if (!target_running ()) \ | |
2482 | { \ | |
2483 | write_enn (BUF); \ | |
2484 | break; \ | |
2485 | } | |
2486 | ||
95954743 PA |
2487 | static int |
2488 | first_thread_of (struct inferior_list_entry *entry, void *args) | |
2489 | { | |
2490 | int pid = * (int *) args; | |
2491 | ||
2492 | if (ptid_get_pid (entry->id) == pid) | |
2493 | return 1; | |
2494 | ||
2495 | return 0; | |
2496 | } | |
2497 | ||
2498 | static void | |
2499 | kill_inferior_callback (struct inferior_list_entry *entry) | |
2500 | { | |
2501 | struct process_info *process = (struct process_info *) entry; | |
2502 | int pid = ptid_get_pid (process->head.id); | |
2503 | ||
2504 | kill_inferior (pid); | |
2505 | discard_queued_stop_replies (pid); | |
2506 | } | |
2507 | ||
9f767825 DE |
2508 | /* Callback for for_each_inferior to detach or kill the inferior, |
2509 | depending on whether we attached to it or not. | |
2510 | We inform the user whether we're detaching or killing the process | |
2511 | as this is only called when gdbserver is about to exit. */ | |
2512 | ||
95954743 PA |
2513 | static void |
2514 | detach_or_kill_inferior_callback (struct inferior_list_entry *entry) | |
2515 | { | |
2516 | struct process_info *process = (struct process_info *) entry; | |
2517 | int pid = ptid_get_pid (process->head.id); | |
2518 | ||
2519 | if (process->attached) | |
2520 | detach_inferior (pid); | |
2521 | else | |
2522 | kill_inferior (pid); | |
2523 | ||
2524 | discard_queued_stop_replies (pid); | |
2525 | } | |
2526 | ||
9f767825 DE |
2527 | /* for_each_inferior callback for detach_or_kill_for_exit to print |
2528 | the pids of started inferiors. */ | |
2529 | ||
2530 | static void | |
2531 | print_started_pid (struct inferior_list_entry *entry) | |
2532 | { | |
2533 | struct process_info *process = (struct process_info *) entry; | |
2534 | ||
2535 | if (! process->attached) | |
2536 | { | |
2537 | int pid = ptid_get_pid (process->head.id); | |
2538 | fprintf (stderr, " %d", pid); | |
2539 | } | |
2540 | } | |
2541 | ||
2542 | /* for_each_inferior callback for detach_or_kill_for_exit to print | |
2543 | the pids of attached inferiors. */ | |
2544 | ||
2545 | static void | |
2546 | print_attached_pid (struct inferior_list_entry *entry) | |
2547 | { | |
2548 | struct process_info *process = (struct process_info *) entry; | |
2549 | ||
2550 | if (process->attached) | |
2551 | { | |
2552 | int pid = ptid_get_pid (process->head.id); | |
2553 | fprintf (stderr, " %d", pid); | |
2554 | } | |
2555 | } | |
2556 | ||
2557 | /* Call this when exiting gdbserver with possible inferiors that need | |
2558 | to be killed or detached from. */ | |
2559 | ||
2560 | static void | |
2561 | detach_or_kill_for_exit (void) | |
2562 | { | |
2563 | /* First print a list of the inferiors we will be killing/detaching. | |
2564 | This is to assist the user, for example, in case the inferior unexpectedly | |
2565 | dies after we exit: did we screw up or did the inferior exit on its own? | |
2566 | Having this info will save some head-scratching. */ | |
2567 | ||
2568 | if (have_started_inferiors_p ()) | |
2569 | { | |
2570 | fprintf (stderr, "Killing process(es):"); | |
2571 | for_each_inferior (&all_processes, print_started_pid); | |
2572 | fprintf (stderr, "\n"); | |
2573 | } | |
2574 | if (have_attached_inferiors_p ()) | |
2575 | { | |
2576 | fprintf (stderr, "Detaching process(es):"); | |
2577 | for_each_inferior (&all_processes, print_attached_pid); | |
2578 | fprintf (stderr, "\n"); | |
2579 | } | |
2580 | ||
2581 | /* Now we can kill or detach the inferiors. */ | |
2582 | ||
2583 | for_each_inferior (&all_processes, detach_or_kill_inferior_callback); | |
2584 | } | |
2585 | ||
c906108c | 2586 | int |
da85418c | 2587 | main (int argc, char *argv[]) |
c906108c | 2588 | { |
0729219d DJ |
2589 | int bad_attach; |
2590 | int pid; | |
2d717e4f DJ |
2591 | char *arg_end, *port; |
2592 | char **next_arg = &argv[1]; | |
2593 | int multi_mode = 0; | |
2594 | int attach = 0; | |
2595 | int was_running; | |
c906108c | 2596 | |
2d717e4f | 2597 | while (*next_arg != NULL && **next_arg == '-') |
dd24457d | 2598 | { |
2d717e4f DJ |
2599 | if (strcmp (*next_arg, "--version") == 0) |
2600 | { | |
2601 | gdbserver_version (); | |
2602 | exit (0); | |
2603 | } | |
2604 | else if (strcmp (*next_arg, "--help") == 0) | |
2605 | { | |
c16158bc | 2606 | gdbserver_usage (stdout); |
2d717e4f DJ |
2607 | exit (0); |
2608 | } | |
2609 | else if (strcmp (*next_arg, "--attach") == 0) | |
2610 | attach = 1; | |
2611 | else if (strcmp (*next_arg, "--multi") == 0) | |
2612 | multi_mode = 1; | |
ccd213ac DJ |
2613 | else if (strcmp (*next_arg, "--wrapper") == 0) |
2614 | { | |
2615 | next_arg++; | |
2616 | ||
2617 | wrapper_argv = next_arg; | |
2618 | while (*next_arg != NULL && strcmp (*next_arg, "--") != 0) | |
2619 | next_arg++; | |
2620 | ||
2621 | if (next_arg == wrapper_argv || *next_arg == NULL) | |
2622 | { | |
c16158bc | 2623 | gdbserver_usage (stderr); |
ccd213ac DJ |
2624 | exit (1); |
2625 | } | |
2626 | ||
2627 | /* Consume the "--". */ | |
2628 | *next_arg = NULL; | |
2629 | } | |
2d717e4f DJ |
2630 | else if (strcmp (*next_arg, "--debug") == 0) |
2631 | debug_threads = 1; | |
62709adf PA |
2632 | else if (strcmp (*next_arg, "--remote-debug") == 0) |
2633 | remote_debug = 1; | |
db42f210 PA |
2634 | else if (strcmp (*next_arg, "--disable-packet") == 0) |
2635 | { | |
2636 | gdbserver_show_disableable (stdout); | |
2637 | exit (0); | |
2638 | } | |
2639 | else if (strncmp (*next_arg, | |
2640 | "--disable-packet=", | |
2641 | sizeof ("--disable-packet=") - 1) == 0) | |
2642 | { | |
2643 | char *packets, *tok; | |
2644 | ||
2645 | packets = *next_arg += sizeof ("--disable-packet=") - 1; | |
2646 | for (tok = strtok (packets, ","); | |
2647 | tok != NULL; | |
2648 | tok = strtok (NULL, ",")) | |
2649 | { | |
2650 | if (strcmp ("vCont", tok) == 0) | |
2651 | disable_packet_vCont = 1; | |
2652 | else if (strcmp ("Tthread", tok) == 0) | |
2653 | disable_packet_Tthread = 1; | |
2654 | else if (strcmp ("qC", tok) == 0) | |
2655 | disable_packet_qC = 1; | |
2656 | else if (strcmp ("qfThreadInfo", tok) == 0) | |
2657 | disable_packet_qfThreadInfo = 1; | |
2658 | else if (strcmp ("threads", tok) == 0) | |
2659 | { | |
2660 | disable_packet_vCont = 1; | |
2661 | disable_packet_Tthread = 1; | |
2662 | disable_packet_qC = 1; | |
2663 | disable_packet_qfThreadInfo = 1; | |
2664 | } | |
2665 | else | |
2666 | { | |
2667 | fprintf (stderr, "Don't know how to disable \"%s\".\n\n", | |
2668 | tok); | |
2669 | gdbserver_show_disableable (stderr); | |
2670 | exit (1); | |
2671 | } | |
2672 | } | |
2673 | } | |
e0f9f062 DE |
2674 | else if (strcmp (*next_arg, "-") == 0) |
2675 | { | |
2676 | /* "-" specifies a stdio connection and is a form of port | |
2677 | specification. */ | |
2678 | *next_arg = STDIO_CONNECTION_NAME; | |
2679 | break; | |
2680 | } | |
03583c20 UW |
2681 | else if (strcmp (*next_arg, "--disable-randomization") == 0) |
2682 | disable_randomization = 1; | |
2683 | else if (strcmp (*next_arg, "--no-disable-randomization") == 0) | |
2684 | disable_randomization = 0; | |
03f2bd59 JK |
2685 | else if (strcmp (*next_arg, "--once") == 0) |
2686 | run_once = 1; | |
2d717e4f DJ |
2687 | else |
2688 | { | |
2689 | fprintf (stderr, "Unknown argument: %s\n", *next_arg); | |
2690 | exit (1); | |
2691 | } | |
dd24457d | 2692 | |
2d717e4f DJ |
2693 | next_arg++; |
2694 | continue; | |
dd24457d DJ |
2695 | } |
2696 | ||
c5aa993b | 2697 | if (setjmp (toplevel)) |
c906108c | 2698 | { |
c5aa993b JM |
2699 | fprintf (stderr, "Exiting\n"); |
2700 | exit (1); | |
c906108c SS |
2701 | } |
2702 | ||
2d717e4f DJ |
2703 | port = *next_arg; |
2704 | next_arg++; | |
2705 | if (port == NULL || (!attach && !multi_mode && *next_arg == NULL)) | |
2706 | { | |
c16158bc | 2707 | gdbserver_usage (stderr); |
2d717e4f DJ |
2708 | exit (1); |
2709 | } | |
2710 | ||
e0f9f062 DE |
2711 | /* We need to know whether the remote connection is stdio before |
2712 | starting the inferior. Inferiors created in this scenario have | |
2713 | stdin,stdout redirected. So do this here before we call | |
2714 | start_inferior. */ | |
2715 | remote_prepare (port); | |
2716 | ||
0729219d DJ |
2717 | bad_attach = 0; |
2718 | pid = 0; | |
2d717e4f DJ |
2719 | |
2720 | /* --attach used to come after PORT, so allow it there for | |
2721 | compatibility. */ | |
2722 | if (*next_arg != NULL && strcmp (*next_arg, "--attach") == 0) | |
45b7b345 | 2723 | { |
2d717e4f DJ |
2724 | attach = 1; |
2725 | next_arg++; | |
45b7b345 DJ |
2726 | } |
2727 | ||
2d717e4f DJ |
2728 | if (attach |
2729 | && (*next_arg == NULL | |
2730 | || (*next_arg)[0] == '\0' | |
2731 | || (pid = strtoul (*next_arg, &arg_end, 0)) == 0 | |
2732 | || *arg_end != '\0' | |
2733 | || next_arg[1] != NULL)) | |
2734 | bad_attach = 1; | |
2735 | ||
2736 | if (bad_attach) | |
dd24457d | 2737 | { |
c16158bc | 2738 | gdbserver_usage (stderr); |
dd24457d DJ |
2739 | exit (1); |
2740 | } | |
c906108c | 2741 | |
a20d5e98 | 2742 | initialize_async_io (); |
4ce44c66 | 2743 | initialize_low (); |
219f2f23 PA |
2744 | if (target_supports_tracepoints ()) |
2745 | initialize_tracepoint (); | |
4ce44c66 | 2746 | |
bca929d3 DE |
2747 | own_buf = xmalloc (PBUFSIZ + 1); |
2748 | mem_buf = xmalloc (PBUFSIZ); | |
0a30fbc4 | 2749 | |
2d717e4f | 2750 | if (pid == 0 && *next_arg != NULL) |
45b7b345 | 2751 | { |
2d717e4f DJ |
2752 | int i, n; |
2753 | ||
2754 | n = argc - (next_arg - argv); | |
bca929d3 | 2755 | program_argv = xmalloc (sizeof (char *) * (n + 1)); |
2d717e4f | 2756 | for (i = 0; i < n; i++) |
bca929d3 | 2757 | program_argv[i] = xstrdup (next_arg[i]); |
2d717e4f DJ |
2758 | program_argv[i] = NULL; |
2759 | ||
45b7b345 | 2760 | /* Wait till we are at first instruction in program. */ |
5b1c542e | 2761 | start_inferior (program_argv); |
c906108c | 2762 | |
c588c53c MS |
2763 | /* We are now (hopefully) stopped at the first instruction of |
2764 | the target process. This assumes that the target process was | |
2765 | successfully created. */ | |
45b7b345 | 2766 | } |
2d717e4f DJ |
2767 | else if (pid != 0) |
2768 | { | |
5b1c542e | 2769 | if (attach_inferior (pid) == -1) |
2d717e4f DJ |
2770 | error ("Attaching not supported on this target"); |
2771 | ||
2772 | /* Otherwise succeeded. */ | |
2773 | } | |
45b7b345 DJ |
2774 | else |
2775 | { | |
5b1c542e PA |
2776 | last_status.kind = TARGET_WAITKIND_EXITED; |
2777 | last_status.value.integer = 0; | |
95954743 | 2778 | last_ptid = minus_one_ptid; |
45b7b345 | 2779 | } |
c906108c | 2780 | |
311de423 PA |
2781 | /* Don't report shared library events on the initial connection, |
2782 | even if some libraries are preloaded. Avoids the "stopped by | |
2783 | shared library event" notice on gdb side. */ | |
2784 | dlls_changed = 0; | |
2785 | ||
8264bb58 DJ |
2786 | if (setjmp (toplevel)) |
2787 | { | |
f128d5e9 PA |
2788 | /* If something fails and longjmps while detaching or killing |
2789 | inferiors, we'd end up here again, stuck in an infinite loop | |
2790 | trap. Be sure that if that happens, we exit immediately | |
2791 | instead. */ | |
01b17894 PA |
2792 | if (setjmp (toplevel) == 0) |
2793 | detach_or_kill_for_exit (); | |
2794 | else | |
2795 | fprintf (stderr, "Detach or kill failed. Exiting\n"); | |
8264bb58 DJ |
2796 | exit (1); |
2797 | } | |
2798 | ||
5b1c542e PA |
2799 | if (last_status.kind == TARGET_WAITKIND_EXITED |
2800 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2d717e4f DJ |
2801 | was_running = 0; |
2802 | else | |
2803 | was_running = 1; | |
2804 | ||
2805 | if (!was_running && !multi_mode) | |
c588c53c | 2806 | { |
2d717e4f | 2807 | fprintf (stderr, "No program to debug. GDBserver exiting.\n"); |
c588c53c MS |
2808 | exit (1); |
2809 | } | |
2810 | ||
c906108c SS |
2811 | while (1) |
2812 | { | |
a6f3e723 | 2813 | noack_mode = 0; |
95954743 | 2814 | multi_process = 0; |
8336d594 PA |
2815 | /* Be sure we're out of tfind mode. */ |
2816 | current_traceframe = -1; | |
bd99dc85 | 2817 | |
2d717e4f | 2818 | remote_open (port); |
c906108c | 2819 | |
2d717e4f DJ |
2820 | if (setjmp (toplevel) != 0) |
2821 | { | |
2822 | /* An error occurred. */ | |
2823 | if (response_needed) | |
2824 | { | |
2825 | write_enn (own_buf); | |
2826 | putpkt (own_buf); | |
2827 | } | |
2828 | } | |
2829 | ||
bd99dc85 | 2830 | /* Wait for events. This will return when all event sources are |
8336d594 | 2831 | removed from the event loop. */ |
bd99dc85 PA |
2832 | start_event_loop (); |
2833 | ||
2834 | /* If an exit was requested (using the "monitor exit" command), | |
2835 | terminate now. The only other way to get here is for | |
2836 | getpkt to fail; close the connection and reopen it at the | |
2837 | top of the loop. */ | |
2838 | ||
03f2bd59 | 2839 | if (exit_requested || run_once) |
c906108c | 2840 | { |
01b17894 PA |
2841 | /* If something fails and longjmps while detaching or |
2842 | killing inferiors, we'd end up here again, stuck in an | |
2843 | infinite loop trap. Be sure that if that happens, we | |
2844 | exit immediately instead. */ | |
2845 | if (setjmp (toplevel) == 0) | |
2846 | { | |
2847 | detach_or_kill_for_exit (); | |
2848 | exit (0); | |
2849 | } | |
2850 | else | |
2851 | { | |
2852 | fprintf (stderr, "Detach or kill failed. Exiting\n"); | |
2853 | exit (1); | |
2854 | } | |
bd99dc85 | 2855 | } |
8336d594 PA |
2856 | |
2857 | fprintf (stderr, | |
2858 | "Remote side has terminated connection. " | |
2859 | "GDBserver will reopen the connection.\n"); | |
2860 | ||
2861 | if (tracing) | |
2862 | { | |
2863 | if (disconnected_tracing) | |
2864 | { | |
2865 | /* Try to enable non-stop/async mode, so we we can both | |
2866 | wait for an async socket accept, and handle async | |
2867 | target events simultaneously. There's also no point | |
2868 | either in having the target always stop all threads, | |
2869 | when we're going to pass signals down without | |
2870 | informing GDB. */ | |
2871 | if (!non_stop) | |
2872 | { | |
2873 | if (start_non_stop (1)) | |
2874 | non_stop = 1; | |
2875 | ||
2876 | /* Detaching implicitly resumes all threads; simply | |
2877 | disconnecting does not. */ | |
2878 | } | |
2879 | } | |
2880 | else | |
2881 | { | |
2882 | fprintf (stderr, | |
2883 | "Disconnected tracing disabled; stopping trace run.\n"); | |
2884 | stop_tracing (); | |
2885 | } | |
2886 | } | |
bd99dc85 PA |
2887 | } |
2888 | } | |
01f9e8fa | 2889 | |
9f3a5c85 LM |
2890 | /* Process options coming from Z packets for *point at address |
2891 | POINT_ADDR. PACKET is the packet buffer. *PACKET is updated | |
2892 | to point to the first char after the last processed option. */ | |
2893 | ||
2894 | static void | |
2895 | process_point_options (CORE_ADDR point_addr, char **packet) | |
2896 | { | |
2897 | char *dataptr = *packet; | |
2898 | ||
2899 | /* Check if data has the correct format. */ | |
2900 | if (*dataptr != ';') | |
2901 | return; | |
2902 | ||
2903 | dataptr++; | |
2904 | ||
2905 | while (*dataptr) | |
2906 | { | |
2907 | switch (*dataptr) | |
2908 | { | |
2909 | case 'X': | |
2910 | /* Conditional expression. */ | |
2911 | fprintf (stderr, "Found breakpoint condition.\n"); | |
2912 | add_breakpoint_condition (point_addr, &dataptr); | |
2913 | break; | |
2914 | default: | |
2915 | /* Unrecognized token, just skip it. */ | |
2916 | fprintf (stderr, "Unknown token %c, ignoring.\n", | |
2917 | *dataptr); | |
2918 | } | |
2919 | ||
2920 | /* Skip tokens until we find one that we recognize. */ | |
2921 | while (*dataptr && *dataptr != 'X' && *dataptr != ';') | |
2922 | dataptr++; | |
2923 | } | |
2924 | *packet = dataptr; | |
2925 | } | |
2926 | ||
bd99dc85 PA |
2927 | /* Event loop callback that handles a serial event. The first byte in |
2928 | the serial buffer gets us here. We expect characters to arrive at | |
2929 | a brisk pace, so we read the rest of the packet with a blocking | |
2930 | getpkt call. */ | |
01f9e8fa | 2931 | |
8336d594 | 2932 | static int |
bd99dc85 PA |
2933 | process_serial_event (void) |
2934 | { | |
2935 | char ch; | |
2936 | int i = 0; | |
2937 | int signal; | |
2938 | unsigned int len; | |
764880b7 | 2939 | int res; |
bd99dc85 | 2940 | CORE_ADDR mem_addr; |
95954743 | 2941 | int pid; |
bd99dc85 PA |
2942 | unsigned char sig; |
2943 | int packet_len; | |
2944 | int new_packet_len = -1; | |
2945 | ||
2946 | /* Used to decide when gdbserver should exit in | |
2947 | multi-mode/remote. */ | |
2948 | static int have_ran = 0; | |
2949 | ||
2950 | if (!have_ran) | |
2951 | have_ran = target_running (); | |
2952 | ||
2953 | disable_async_io (); | |
2954 | ||
2955 | response_needed = 0; | |
2956 | packet_len = getpkt (own_buf); | |
2957 | if (packet_len <= 0) | |
2958 | { | |
bd99dc85 | 2959 | remote_close (); |
8336d594 PA |
2960 | /* Force an event loop break. */ |
2961 | return -1; | |
bd99dc85 PA |
2962 | } |
2963 | response_needed = 1; | |
2964 | ||
2965 | i = 0; | |
2966 | ch = own_buf[i++]; | |
2967 | switch (ch) | |
2968 | { | |
2969 | case 'q': | |
2970 | handle_query (own_buf, packet_len, &new_packet_len); | |
2971 | break; | |
2972 | case 'Q': | |
2973 | handle_general_set (own_buf); | |
2974 | break; | |
2975 | case 'D': | |
2976 | require_running (own_buf); | |
95954743 PA |
2977 | |
2978 | if (multi_process) | |
2979 | { | |
2980 | i++; /* skip ';' */ | |
2981 | pid = strtol (&own_buf[i], NULL, 16); | |
2982 | } | |
2983 | else | |
2984 | pid = | |
2985 | ptid_get_pid (((struct inferior_list_entry *) current_inferior)->id); | |
2986 | ||
8336d594 PA |
2987 | if (tracing && disconnected_tracing) |
2988 | { | |
2989 | struct thread_resume resume_info; | |
2990 | struct process_info *process = find_process_pid (pid); | |
2991 | ||
2992 | if (process == NULL) | |
2993 | { | |
2994 | write_enn (own_buf); | |
2995 | break; | |
2996 | } | |
2997 | ||
2998 | fprintf (stderr, | |
2999 | "Disconnected tracing in effect, " | |
3000 | "leaving gdbserver attached to the process\n"); | |
3001 | ||
3002 | /* Make sure we're in non-stop/async mode, so we we can both | |
3003 | wait for an async socket accept, and handle async target | |
3004 | events simultaneously. There's also no point either in | |
3005 | having the target stop all threads, when we're going to | |
3006 | pass signals down without informing GDB. */ | |
3007 | if (!non_stop) | |
3008 | { | |
3009 | if (debug_threads) | |
3010 | fprintf (stderr, "Forcing non-stop mode\n"); | |
3011 | ||
3012 | non_stop = 1; | |
3013 | start_non_stop (1); | |
3014 | } | |
3015 | ||
3016 | process->gdb_detached = 1; | |
3017 | ||
3018 | /* Detaching implicitly resumes all threads. */ | |
3019 | resume_info.thread = minus_one_ptid; | |
3020 | resume_info.kind = resume_continue; | |
3021 | resume_info.sig = 0; | |
3022 | (*the_target->resume) (&resume_info, 1); | |
3023 | ||
3024 | write_ok (own_buf); | |
3025 | break; /* from switch/case */ | |
3026 | } | |
3027 | ||
95954743 | 3028 | fprintf (stderr, "Detaching from process %d\n", pid); |
8336d594 | 3029 | stop_tracing (); |
95954743 | 3030 | if (detach_inferior (pid) != 0) |
bd99dc85 PA |
3031 | write_enn (own_buf); |
3032 | else | |
3033 | { | |
95954743 | 3034 | discard_queued_stop_replies (pid); |
bd99dc85 PA |
3035 | write_ok (own_buf); |
3036 | ||
3037 | if (extended_protocol) | |
c906108c | 3038 | { |
bd99dc85 PA |
3039 | /* Treat this like a normal program exit. */ |
3040 | last_status.kind = TARGET_WAITKIND_EXITED; | |
3041 | last_status.value.integer = 0; | |
95954743 | 3042 | last_ptid = pid_to_ptid (pid); |
2d717e4f | 3043 | |
bd99dc85 PA |
3044 | current_inferior = NULL; |
3045 | } | |
3046 | else | |
3047 | { | |
3048 | putpkt (own_buf); | |
3049 | remote_close (); | |
3050 | ||
3051 | /* If we are attached, then we can exit. Otherwise, we | |
3052 | need to hang around doing nothing, until the child is | |
3053 | gone. */ | |
71f55dd8 | 3054 | join_inferior (pid); |
bd99dc85 PA |
3055 | exit (0); |
3056 | } | |
3057 | } | |
3058 | break; | |
3059 | case '!': | |
3060 | extended_protocol = 1; | |
3061 | write_ok (own_buf); | |
3062 | break; | |
3063 | case '?': | |
3064 | handle_status (own_buf); | |
3065 | break; | |
3066 | case 'H': | |
3067 | if (own_buf[1] == 'c' || own_buf[1] == 'g' || own_buf[1] == 's') | |
3068 | { | |
95954743 PA |
3069 | ptid_t gdb_id, thread_id; |
3070 | int pid; | |
bd99dc85 PA |
3071 | |
3072 | require_running (own_buf); | |
95954743 PA |
3073 | |
3074 | gdb_id = read_ptid (&own_buf[2], NULL); | |
3075 | ||
3076 | pid = ptid_get_pid (gdb_id); | |
3077 | ||
3078 | if (ptid_equal (gdb_id, null_ptid) | |
3079 | || ptid_equal (gdb_id, minus_one_ptid)) | |
3080 | thread_id = null_ptid; | |
3081 | else if (pid != 0 | |
3082 | && ptid_equal (pid_to_ptid (pid), | |
3083 | gdb_id)) | |
3084 | { | |
3085 | struct thread_info *thread = | |
3086 | (struct thread_info *) find_inferior (&all_threads, | |
3087 | first_thread_of, | |
3088 | &pid); | |
3089 | if (!thread) | |
3090 | { | |
3091 | write_enn (own_buf); | |
3092 | break; | |
3093 | } | |
3094 | ||
3095 | thread_id = ((struct inferior_list_entry *)thread)->id; | |
3096 | } | |
bd99dc85 PA |
3097 | else |
3098 | { | |
3099 | thread_id = gdb_id_to_thread_id (gdb_id); | |
95954743 | 3100 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 3101 | { |
a06660f7 | 3102 | write_enn (own_buf); |
c906108c SS |
3103 | break; |
3104 | } | |
c906108c SS |
3105 | } |
3106 | ||
bd99dc85 | 3107 | if (own_buf[1] == 'g') |
c906108c | 3108 | { |
95954743 | 3109 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 3110 | { |
bd99dc85 PA |
3111 | /* GDB is telling us to choose any thread. Check if |
3112 | the currently selected thread is still valid. If | |
3113 | it is not, select the first available. */ | |
3114 | struct thread_info *thread = | |
3115 | (struct thread_info *) find_inferior_id (&all_threads, | |
3116 | general_thread); | |
3117 | if (thread == NULL) | |
3118 | thread_id = all_threads.head->id; | |
c906108c | 3119 | } |
bd99dc85 PA |
3120 | |
3121 | general_thread = thread_id; | |
3122 | set_desired_inferior (1); | |
c906108c | 3123 | } |
bd99dc85 PA |
3124 | else if (own_buf[1] == 'c') |
3125 | cont_thread = thread_id; | |
c906108c | 3126 | |
bd99dc85 PA |
3127 | write_ok (own_buf); |
3128 | } | |
3129 | else | |
3130 | { | |
3131 | /* Silently ignore it so that gdb can extend the protocol | |
3132 | without compatibility headaches. */ | |
3133 | own_buf[0] = '\0'; | |
2d717e4f | 3134 | } |
bd99dc85 PA |
3135 | break; |
3136 | case 'g': | |
219f2f23 PA |
3137 | require_running (own_buf); |
3138 | if (current_traceframe >= 0) | |
3139 | { | |
3140 | struct regcache *regcache = new_register_cache (); | |
3141 | ||
3142 | if (fetch_traceframe_registers (current_traceframe, | |
3143 | regcache, -1) == 0) | |
3144 | registers_to_string (regcache, own_buf); | |
3145 | else | |
3146 | write_enn (own_buf); | |
3147 | free_register_cache (regcache); | |
3148 | } | |
3149 | else | |
3150 | { | |
3151 | struct regcache *regcache; | |
3152 | ||
3153 | set_desired_inferior (1); | |
3154 | regcache = get_thread_regcache (current_inferior, 1); | |
3155 | registers_to_string (regcache, own_buf); | |
3156 | } | |
bd99dc85 PA |
3157 | break; |
3158 | case 'G': | |
219f2f23 PA |
3159 | require_running (own_buf); |
3160 | if (current_traceframe >= 0) | |
3161 | write_enn (own_buf); | |
3162 | else | |
3163 | { | |
442ea881 PA |
3164 | struct regcache *regcache; |
3165 | ||
442ea881 PA |
3166 | set_desired_inferior (1); |
3167 | regcache = get_thread_regcache (current_inferior, 1); | |
3168 | registers_from_string (regcache, &own_buf[1]); | |
3169 | write_ok (own_buf); | |
3170 | } | |
bd99dc85 PA |
3171 | break; |
3172 | case 'm': | |
3173 | require_running (own_buf); | |
3174 | decode_m_packet (&own_buf[1], &mem_addr, &len); | |
764880b7 PA |
3175 | res = gdb_read_memory (mem_addr, mem_buf, len); |
3176 | if (res < 0) | |
bd99dc85 | 3177 | write_enn (own_buf); |
764880b7 PA |
3178 | else |
3179 | convert_int_to_ascii (mem_buf, own_buf, res); | |
bd99dc85 PA |
3180 | break; |
3181 | case 'M': | |
3182 | require_running (own_buf); | |
fa593d66 | 3183 | decode_M_packet (&own_buf[1], &mem_addr, &len, &mem_buf); |
90d74c30 | 3184 | if (gdb_write_memory (mem_addr, mem_buf, len) == 0) |
bd99dc85 PA |
3185 | write_ok (own_buf); |
3186 | else | |
3187 | write_enn (own_buf); | |
3188 | break; | |
3189 | case 'X': | |
3190 | require_running (own_buf); | |
3191 | if (decode_X_packet (&own_buf[1], packet_len - 1, | |
fa593d66 | 3192 | &mem_addr, &len, &mem_buf) < 0 |
90d74c30 | 3193 | || gdb_write_memory (mem_addr, mem_buf, len) != 0) |
bd99dc85 PA |
3194 | write_enn (own_buf); |
3195 | else | |
3196 | write_ok (own_buf); | |
3197 | break; | |
3198 | case 'C': | |
3199 | require_running (own_buf); | |
3200 | convert_ascii_to_int (own_buf + 1, &sig, 1); | |
3201 | if (target_signal_to_host_p (sig)) | |
3202 | signal = target_signal_to_host (sig); | |
3203 | else | |
3204 | signal = 0; | |
3205 | myresume (own_buf, 0, signal); | |
3206 | break; | |
3207 | case 'S': | |
3208 | require_running (own_buf); | |
3209 | convert_ascii_to_int (own_buf + 1, &sig, 1); | |
3210 | if (target_signal_to_host_p (sig)) | |
3211 | signal = target_signal_to_host (sig); | |
3212 | else | |
3213 | signal = 0; | |
3214 | myresume (own_buf, 1, signal); | |
3215 | break; | |
3216 | case 'c': | |
3217 | require_running (own_buf); | |
3218 | signal = 0; | |
3219 | myresume (own_buf, 0, signal); | |
3220 | break; | |
3221 | case 's': | |
3222 | require_running (own_buf); | |
3223 | signal = 0; | |
3224 | myresume (own_buf, 1, signal); | |
3225 | break; | |
c6314022 AR |
3226 | case 'Z': /* insert_ ... */ |
3227 | /* Fallthrough. */ | |
3228 | case 'z': /* remove_ ... */ | |
bd99dc85 PA |
3229 | { |
3230 | char *lenptr; | |
3231 | char *dataptr; | |
3232 | CORE_ADDR addr = strtoul (&own_buf[3], &lenptr, 16); | |
3233 | int len = strtol (lenptr + 1, &dataptr, 16); | |
3234 | char type = own_buf[1]; | |
c6314022 | 3235 | int res; |
d993e290 | 3236 | const int insert = ch == 'Z'; |
c6314022 | 3237 | |
d993e290 PA |
3238 | /* Default to unrecognized/unsupported. */ |
3239 | res = 1; | |
3240 | switch (type) | |
3241 | { | |
3242 | case '0': /* software-breakpoint */ | |
3243 | case '1': /* hardware-breakpoint */ | |
3244 | case '2': /* write watchpoint */ | |
3245 | case '3': /* read watchpoint */ | |
3246 | case '4': /* access watchpoint */ | |
3247 | require_running (own_buf); | |
3248 | if (insert && the_target->insert_point != NULL) | |
9f3a5c85 LM |
3249 | { |
3250 | /* Insert the breakpoint. If it is already inserted, nothing | |
3251 | will take place. */ | |
3252 | res = (*the_target->insert_point) (type, addr, len); | |
3253 | ||
3254 | /* GDB may have sent us a list of *point parameters to be | |
3255 | evaluated on the target's side. Read such list here. If we | |
3256 | already have a list of parameters, GDB is telling us to drop | |
3257 | that list and use this one instead. */ | |
3258 | if (!res && (type == '0' || type == '1')) | |
3259 | { | |
3260 | /* Remove previous conditions. */ | |
3261 | clear_gdb_breakpoint_conditions (addr); | |
3262 | process_point_options (addr, &dataptr); | |
3263 | } | |
3264 | } | |
d993e290 PA |
3265 | else if (!insert && the_target->remove_point != NULL) |
3266 | res = (*the_target->remove_point) (type, addr, len); | |
3267 | break; | |
3268 | default: | |
3269 | break; | |
3270 | } | |
bd99dc85 | 3271 | |
c6314022 AR |
3272 | if (res == 0) |
3273 | write_ok (own_buf); | |
3274 | else if (res == 1) | |
3275 | /* Unsupported. */ | |
3276 | own_buf[0] = '\0'; | |
bd99dc85 | 3277 | else |
c6314022 | 3278 | write_enn (own_buf); |
bd99dc85 PA |
3279 | break; |
3280 | } | |
3281 | case 'k': | |
3282 | response_needed = 0; | |
3283 | if (!target_running ()) | |
95954743 PA |
3284 | /* The packet we received doesn't make sense - but we can't |
3285 | reply to it, either. */ | |
8336d594 | 3286 | return 0; |
c906108c | 3287 | |
95954743 PA |
3288 | fprintf (stderr, "Killing all inferiors\n"); |
3289 | for_each_inferior (&all_processes, kill_inferior_callback); | |
c906108c | 3290 | |
bd99dc85 PA |
3291 | /* When using the extended protocol, we wait with no program |
3292 | running. The traditional protocol will exit instead. */ | |
3293 | if (extended_protocol) | |
3294 | { | |
3295 | last_status.kind = TARGET_WAITKIND_EXITED; | |
3296 | last_status.value.sig = TARGET_SIGNAL_KILL; | |
8336d594 | 3297 | return 0; |
bd99dc85 PA |
3298 | } |
3299 | else | |
8336d594 PA |
3300 | exit (0); |
3301 | ||
bd99dc85 PA |
3302 | case 'T': |
3303 | { | |
95954743 | 3304 | ptid_t gdb_id, thread_id; |
bd99dc85 PA |
3305 | |
3306 | require_running (own_buf); | |
95954743 PA |
3307 | |
3308 | gdb_id = read_ptid (&own_buf[1], NULL); | |
bd99dc85 | 3309 | thread_id = gdb_id_to_thread_id (gdb_id); |
95954743 | 3310 | if (ptid_equal (thread_id, null_ptid)) |
bd99dc85 PA |
3311 | { |
3312 | write_enn (own_buf); | |
3313 | break; | |
3314 | } | |
3315 | ||
3316 | if (mythread_alive (thread_id)) | |
3317 | write_ok (own_buf); | |
3318 | else | |
3319 | write_enn (own_buf); | |
3320 | } | |
3321 | break; | |
3322 | case 'R': | |
3323 | response_needed = 0; | |
3324 | ||
3325 | /* Restarting the inferior is only supported in the extended | |
3326 | protocol. */ | |
3327 | if (extended_protocol) | |
3328 | { | |
3329 | if (target_running ()) | |
95954743 PA |
3330 | for_each_inferior (&all_processes, |
3331 | kill_inferior_callback); | |
bd99dc85 PA |
3332 | fprintf (stderr, "GDBserver restarting\n"); |
3333 | ||
3334 | /* Wait till we are at 1st instruction in prog. */ | |
3335 | if (program_argv != NULL) | |
3336 | start_inferior (program_argv); | |
3337 | else | |
3338 | { | |
3339 | last_status.kind = TARGET_WAITKIND_EXITED; | |
3340 | last_status.value.sig = TARGET_SIGNAL_KILL; | |
3341 | } | |
8336d594 | 3342 | return 0; |
c906108c SS |
3343 | } |
3344 | else | |
3345 | { | |
bd99dc85 PA |
3346 | /* It is a request we don't understand. Respond with an |
3347 | empty packet so that gdb knows that we don't support this | |
3348 | request. */ | |
3349 | own_buf[0] = '\0'; | |
3350 | break; | |
3351 | } | |
3352 | case 'v': | |
3353 | /* Extended (long) request. */ | |
3354 | handle_v_requests (own_buf, packet_len, &new_packet_len); | |
3355 | break; | |
3356 | ||
3357 | default: | |
3358 | /* It is a request we don't understand. Respond with an empty | |
3359 | packet so that gdb knows that we don't support this | |
3360 | request. */ | |
3361 | own_buf[0] = '\0'; | |
3362 | break; | |
3363 | } | |
3364 | ||
3365 | if (new_packet_len != -1) | |
3366 | putpkt_binary (own_buf, new_packet_len); | |
3367 | else | |
3368 | putpkt (own_buf); | |
3369 | ||
3370 | response_needed = 0; | |
3371 | ||
3372 | if (!extended_protocol && have_ran && !target_running ()) | |
3373 | { | |
3374 | /* In non-stop, defer exiting until GDB had a chance to query | |
3375 | the whole vStopped list (until it gets an OK). */ | |
3376 | if (!notif_queue) | |
3377 | { | |
3378 | fprintf (stderr, "GDBserver exiting\n"); | |
c906108c | 3379 | remote_close (); |
bd99dc85 | 3380 | exit (0); |
c906108c SS |
3381 | } |
3382 | } | |
8336d594 PA |
3383 | |
3384 | if (exit_requested) | |
3385 | return -1; | |
3386 | ||
3387 | return 0; | |
c906108c | 3388 | } |
bd99dc85 PA |
3389 | |
3390 | /* Event-loop callback for serial events. */ | |
3391 | ||
8336d594 | 3392 | int |
bd99dc85 PA |
3393 | handle_serial_event (int err, gdb_client_data client_data) |
3394 | { | |
3395 | if (debug_threads) | |
3396 | fprintf (stderr, "handling possible serial event\n"); | |
3397 | ||
3398 | /* Really handle it. */ | |
8336d594 PA |
3399 | if (process_serial_event () < 0) |
3400 | return -1; | |
bd99dc85 PA |
3401 | |
3402 | /* Be sure to not change the selected inferior behind GDB's back. | |
3403 | Important in the non-stop mode asynchronous protocol. */ | |
3404 | set_desired_inferior (1); | |
8336d594 PA |
3405 | |
3406 | return 0; | |
bd99dc85 PA |
3407 | } |
3408 | ||
3409 | /* Event-loop callback for target events. */ | |
3410 | ||
8336d594 | 3411 | int |
bd99dc85 PA |
3412 | handle_target_event (int err, gdb_client_data client_data) |
3413 | { | |
3414 | if (debug_threads) | |
3415 | fprintf (stderr, "handling possible target event\n"); | |
3416 | ||
95954743 PA |
3417 | last_ptid = mywait (minus_one_ptid, &last_status, |
3418 | TARGET_WNOHANG, 1); | |
bd99dc85 PA |
3419 | |
3420 | if (last_status.kind != TARGET_WAITKIND_IGNORE) | |
3421 | { | |
8336d594 PA |
3422 | int pid = ptid_get_pid (last_ptid); |
3423 | struct process_info *process = find_process_pid (pid); | |
3424 | int forward_event = !gdb_connected () || process->gdb_detached; | |
3425 | ||
3426 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
3427 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
f9e39928 PA |
3428 | { |
3429 | mark_breakpoints_out (process); | |
3430 | mourn_inferior (process); | |
3431 | } | |
ce1a5b52 | 3432 | else |
d20a8ad9 PA |
3433 | { |
3434 | /* We're reporting this thread as stopped. Update its | |
3435 | "want-stopped" state to what the client wants, until it | |
3436 | gets a new resume action. */ | |
3437 | current_inferior->last_resume_kind = resume_stop; | |
3438 | current_inferior->last_status = last_status; | |
3439 | } | |
8336d594 PA |
3440 | |
3441 | if (forward_event) | |
3442 | { | |
3443 | if (!target_running ()) | |
3444 | { | |
3445 | /* The last process exited. We're done. */ | |
3446 | exit (0); | |
3447 | } | |
3448 | ||
3449 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
3450 | { | |
3451 | /* A thread stopped with a signal, but gdb isn't | |
3452 | connected to handle it. Pass it down to the | |
3453 | inferior, as if it wasn't being traced. */ | |
3454 | struct thread_resume resume_info; | |
3455 | ||
3456 | if (debug_threads) | |
3457 | fprintf (stderr, | |
3458 | "GDB not connected; forwarding event %d for [%s]\n", | |
3459 | (int) last_status.kind, | |
3460 | target_pid_to_str (last_ptid)); | |
3461 | ||
3462 | resume_info.thread = last_ptid; | |
3463 | resume_info.kind = resume_continue; | |
30d50328 | 3464 | resume_info.sig = target_signal_to_host (last_status.value.sig); |
8336d594 PA |
3465 | (*the_target->resume) (&resume_info, 1); |
3466 | } | |
3467 | else if (debug_threads) | |
3468 | fprintf (stderr, "GDB not connected; ignoring event %d for [%s]\n", | |
3469 | (int) last_status.kind, | |
3470 | target_pid_to_str (last_ptid)); | |
3471 | } | |
3472 | else | |
3473 | { | |
3474 | /* Something interesting. Tell GDB about it. */ | |
3475 | push_event (last_ptid, &last_status); | |
3476 | } | |
bd99dc85 PA |
3477 | } |
3478 | ||
3479 | /* Be sure to not change the selected inferior behind GDB's back. | |
3480 | Important in the non-stop mode asynchronous protocol. */ | |
3481 | set_desired_inferior (1); | |
8336d594 PA |
3482 | |
3483 | return 0; | |
bd99dc85 | 3484 | } |