Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Main code for remote server for GDB. |
a1928bad DJ |
2 | Copyright 1989, 1993, 1994, 1995, 1997, 1998, 1999, 2000, 2002, 2003, 2004, |
3 | 2005 | |
b6ba6518 | 4 | Free Software Foundation, Inc. |
c906108c | 5 | |
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
c906108c | 12 | |
c5aa993b JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
c906108c | 17 | |
c5aa993b JM |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
22 | |
23 | #include "server.h" | |
24 | ||
a9fa9f7d DJ |
25 | #include <unistd.h> |
26 | #include <signal.h> | |
27 | #include <sys/wait.h> | |
28 | ||
a1928bad DJ |
29 | unsigned long cont_thread; |
30 | unsigned long general_thread; | |
31 | unsigned long step_thread; | |
32 | unsigned long thread_from_wait; | |
33 | unsigned long old_thread_from_wait; | |
c906108c | 34 | int extended_protocol; |
0d62e5e8 DJ |
35 | int server_waiting; |
36 | ||
c906108c | 37 | jmp_buf toplevel; |
c906108c | 38 | |
a9fa9f7d DJ |
39 | /* The PID of the originally created or attached inferior. Used to |
40 | send signals to the process when GDB sends us an asynchronous interrupt | |
41 | (user hitting Control-C in the client), and to wait for the child to exit | |
42 | when no longer debugging it. */ | |
43 | ||
a1928bad | 44 | unsigned long signal_pid; |
a9fa9f7d | 45 | |
fc620387 | 46 | static int |
da85418c | 47 | start_inferior (char *argv[], char *statusptr) |
c906108c | 48 | { |
a9fa9f7d DJ |
49 | signal (SIGTTOU, SIG_DFL); |
50 | signal (SIGTTIN, SIG_DFL); | |
51 | ||
52 | signal_pid = create_inferior (argv[0], argv); | |
0d62e5e8 | 53 | |
a1928bad | 54 | fprintf (stderr, "Process %s created; pid = %ld\n", argv[0], |
a9fa9f7d DJ |
55 | signal_pid); |
56 | ||
57 | signal (SIGTTOU, SIG_IGN); | |
58 | signal (SIGTTIN, SIG_IGN); | |
59 | tcsetpgrp (fileno (stderr), signal_pid); | |
c906108c SS |
60 | |
61 | /* Wait till we are at 1st instruction in program, return signal number. */ | |
0d62e5e8 | 62 | return mywait (statusptr, 0); |
c906108c SS |
63 | } |
64 | ||
45b7b345 | 65 | static int |
fc620387 | 66 | attach_inferior (int pid, char *statusptr, int *sigptr) |
45b7b345 DJ |
67 | { |
68 | /* myattach should return -1 if attaching is unsupported, | |
69 | 0 if it succeeded, and call error() otherwise. */ | |
a9fa9f7d | 70 | |
45b7b345 DJ |
71 | if (myattach (pid) != 0) |
72 | return -1; | |
73 | ||
6910d122 DJ |
74 | fprintf (stderr, "Attached; pid = %d\n", pid); |
75 | ||
a9fa9f7d DJ |
76 | /* FIXME - It may be that we should get the SIGNAL_PID from the |
77 | attach function, so that it can be the main thread instead of | |
78 | whichever we were told to attach to. */ | |
79 | signal_pid = pid; | |
80 | ||
0d62e5e8 | 81 | *sigptr = mywait (statusptr, 0); |
45b7b345 DJ |
82 | |
83 | return 0; | |
84 | } | |
85 | ||
c906108c | 86 | extern int remote_debug; |
ce3a066d DJ |
87 | |
88 | /* Handle all of the extended 'q' packets. */ | |
89 | void | |
90 | handle_query (char *own_buf) | |
91 | { | |
0d62e5e8 DJ |
92 | static struct inferior_list_entry *thread_ptr; |
93 | ||
ce3a066d DJ |
94 | if (strcmp ("qSymbol::", own_buf) == 0) |
95 | { | |
2f2893d9 DJ |
96 | if (the_target->look_up_symbols != NULL) |
97 | (*the_target->look_up_symbols) (); | |
98 | ||
ce3a066d DJ |
99 | strcpy (own_buf, "OK"); |
100 | return; | |
101 | } | |
102 | ||
0d62e5e8 DJ |
103 | if (strcmp ("qfThreadInfo", own_buf) == 0) |
104 | { | |
105 | thread_ptr = all_threads.head; | |
a06660f7 | 106 | sprintf (own_buf, "m%x", thread_to_gdb_id ((struct thread_info *)thread_ptr)); |
0d62e5e8 DJ |
107 | thread_ptr = thread_ptr->next; |
108 | return; | |
109 | } | |
aa691b87 | 110 | |
0d62e5e8 DJ |
111 | if (strcmp ("qsThreadInfo", own_buf) == 0) |
112 | { | |
113 | if (thread_ptr != NULL) | |
114 | { | |
a06660f7 | 115 | sprintf (own_buf, "m%x", thread_to_gdb_id ((struct thread_info *)thread_ptr)); |
0d62e5e8 DJ |
116 | thread_ptr = thread_ptr->next; |
117 | return; | |
118 | } | |
119 | else | |
120 | { | |
121 | sprintf (own_buf, "l"); | |
122 | return; | |
123 | } | |
124 | } | |
aa691b87 RM |
125 | |
126 | if (the_target->read_auxv != NULL | |
127 | && strncmp ("qPart:auxv:read::", own_buf, 17) == 0) | |
128 | { | |
f450004a | 129 | unsigned char data[(PBUFSIZ - 1) / 2]; |
aa691b87 RM |
130 | CORE_ADDR ofs; |
131 | unsigned int len; | |
132 | int n; | |
133 | decode_m_packet (&own_buf[17], &ofs, &len); /* "OFS,LEN" */ | |
134 | if (len > sizeof data) | |
135 | len = sizeof data; | |
136 | n = (*the_target->read_auxv) (ofs, data, len); | |
137 | if (n == 0) | |
138 | write_ok (own_buf); | |
139 | else if (n < 0) | |
140 | write_enn (own_buf); | |
141 | else | |
142 | convert_int_to_ascii (data, own_buf, n); | |
143 | return; | |
144 | } | |
145 | ||
ce3a066d DJ |
146 | /* Otherwise we didn't know what packet it was. Say we didn't |
147 | understand it. */ | |
148 | own_buf[0] = 0; | |
149 | } | |
150 | ||
64386c31 DJ |
151 | /* Parse vCont packets. */ |
152 | void | |
fc620387 | 153 | handle_v_cont (char *own_buf, char *status, int *signal) |
64386c31 DJ |
154 | { |
155 | char *p, *q; | |
156 | int n = 0, i = 0; | |
157 | struct thread_resume *resume_info, default_action; | |
158 | ||
159 | /* Count the number of semicolons in the packet. There should be one | |
160 | for every action. */ | |
161 | p = &own_buf[5]; | |
162 | while (p) | |
163 | { | |
164 | n++; | |
165 | p++; | |
166 | p = strchr (p, ';'); | |
167 | } | |
168 | /* Allocate room for one extra action, for the default remain-stopped | |
169 | behavior; if no default action is in the list, we'll need the extra | |
170 | slot. */ | |
171 | resume_info = malloc ((n + 1) * sizeof (resume_info[0])); | |
172 | ||
173 | default_action.thread = -1; | |
174 | default_action.leave_stopped = 1; | |
175 | default_action.step = 0; | |
176 | default_action.sig = 0; | |
177 | ||
178 | p = &own_buf[5]; | |
179 | i = 0; | |
180 | while (*p) | |
181 | { | |
182 | p++; | |
183 | ||
184 | resume_info[i].leave_stopped = 0; | |
185 | ||
186 | if (p[0] == 's' || p[0] == 'S') | |
187 | resume_info[i].step = 1; | |
188 | else if (p[0] == 'c' || p[0] == 'C') | |
189 | resume_info[i].step = 0; | |
190 | else | |
191 | goto err; | |
192 | ||
193 | if (p[0] == 'S' || p[0] == 'C') | |
194 | { | |
195 | int sig; | |
196 | sig = strtol (p + 1, &q, 16); | |
197 | if (p == q) | |
198 | goto err; | |
199 | p = q; | |
200 | ||
201 | if (!target_signal_to_host_p (sig)) | |
202 | goto err; | |
203 | resume_info[i].sig = target_signal_to_host (sig); | |
204 | } | |
205 | else | |
206 | { | |
207 | resume_info[i].sig = 0; | |
208 | p = p + 1; | |
209 | } | |
210 | ||
211 | if (p[0] == 0) | |
212 | { | |
213 | resume_info[i].thread = -1; | |
214 | default_action = resume_info[i]; | |
215 | ||
216 | /* Note: we don't increment i here, we'll overwrite this entry | |
217 | the next time through. */ | |
218 | } | |
219 | else if (p[0] == ':') | |
220 | { | |
a06660f7 DJ |
221 | unsigned int gdb_id = strtoul (p + 1, &q, 16); |
222 | unsigned long thread_id; | |
223 | ||
64386c31 DJ |
224 | if (p == q) |
225 | goto err; | |
226 | p = q; | |
227 | if (p[0] != ';' && p[0] != 0) | |
228 | goto err; | |
229 | ||
a06660f7 DJ |
230 | thread_id = gdb_id_to_thread_id (gdb_id); |
231 | if (thread_id) | |
232 | resume_info[i].thread = thread_id; | |
233 | else | |
234 | goto err; | |
235 | ||
64386c31 DJ |
236 | i++; |
237 | } | |
238 | } | |
239 | ||
240 | resume_info[i] = default_action; | |
241 | ||
242 | /* Still used in occasional places in the backend. */ | |
243 | if (n == 1 && resume_info[0].thread != -1) | |
244 | cont_thread = resume_info[0].thread; | |
245 | else | |
246 | cont_thread = -1; | |
dc3f8883 | 247 | set_desired_inferior (0); |
64386c31 DJ |
248 | |
249 | (*the_target->resume) (resume_info); | |
250 | ||
251 | free (resume_info); | |
252 | ||
253 | *signal = mywait (status, 1); | |
254 | prepare_resume_reply (own_buf, *status, *signal); | |
255 | return; | |
256 | ||
257 | err: | |
258 | /* No other way to report an error... */ | |
259 | strcpy (own_buf, ""); | |
260 | free (resume_info); | |
261 | return; | |
262 | } | |
263 | ||
264 | /* Handle all of the extended 'v' packets. */ | |
265 | void | |
fc620387 | 266 | handle_v_requests (char *own_buf, char *status, int *signal) |
64386c31 DJ |
267 | { |
268 | if (strncmp (own_buf, "vCont;", 6) == 0) | |
269 | { | |
270 | handle_v_cont (own_buf, status, signal); | |
271 | return; | |
272 | } | |
273 | ||
274 | if (strncmp (own_buf, "vCont?", 6) == 0) | |
275 | { | |
276 | strcpy (own_buf, "vCont;c;C;s;S"); | |
277 | return; | |
278 | } | |
279 | ||
280 | /* Otherwise we didn't know what packet it was. Say we didn't | |
281 | understand it. */ | |
282 | own_buf[0] = 0; | |
283 | return; | |
284 | } | |
285 | ||
286 | void | |
287 | myresume (int step, int sig) | |
288 | { | |
289 | struct thread_resume resume_info[2]; | |
290 | int n = 0; | |
291 | ||
d592fa2f | 292 | if (step || sig || (cont_thread != 0 && cont_thread != -1)) |
64386c31 DJ |
293 | { |
294 | resume_info[0].thread | |
295 | = ((struct inferior_list_entry *) current_inferior)->id; | |
296 | resume_info[0].step = step; | |
297 | resume_info[0].sig = sig; | |
298 | resume_info[0].leave_stopped = 0; | |
299 | n++; | |
300 | } | |
301 | resume_info[n].thread = -1; | |
302 | resume_info[n].step = 0; | |
303 | resume_info[n].sig = 0; | |
d592fa2f | 304 | resume_info[n].leave_stopped = (cont_thread != 0 && cont_thread != -1); |
64386c31 DJ |
305 | |
306 | (*the_target->resume) (resume_info); | |
307 | } | |
308 | ||
0729219d | 309 | static int attached; |
c906108c | 310 | |
0bc68c49 DJ |
311 | static void |
312 | gdbserver_usage (void) | |
313 | { | |
314 | error ("Usage:\tgdbserver COMM PROG [ARGS ...]\n" | |
315 | "\tgdbserver COMM --attach PID\n" | |
316 | "\n" | |
317 | "COMM may either be a tty device (for serial debugging), or \n" | |
318 | "HOST:PORT to listen for a TCP connection.\n"); | |
319 | } | |
320 | ||
c906108c | 321 | int |
da85418c | 322 | main (int argc, char *argv[]) |
c906108c | 323 | { |
f450004a DJ |
324 | char ch, status, *own_buf; |
325 | unsigned char mem_buf[2000]; | |
c906108c | 326 | int i = 0; |
fc620387 | 327 | int signal; |
c906108c SS |
328 | unsigned int len; |
329 | CORE_ADDR mem_addr; | |
0729219d DJ |
330 | int bad_attach; |
331 | int pid; | |
45b7b345 | 332 | char *arg_end; |
c906108c | 333 | |
c5aa993b | 334 | if (setjmp (toplevel)) |
c906108c | 335 | { |
c5aa993b JM |
336 | fprintf (stderr, "Exiting\n"); |
337 | exit (1); | |
c906108c SS |
338 | } |
339 | ||
0729219d DJ |
340 | bad_attach = 0; |
341 | pid = 0; | |
342 | attached = 0; | |
45b7b345 DJ |
343 | if (argc >= 3 && strcmp (argv[2], "--attach") == 0) |
344 | { | |
345 | if (argc == 4 | |
346 | && argv[3] != '\0' | |
347 | && (pid = strtoul (argv[3], &arg_end, 10)) != 0 | |
348 | && *arg_end == '\0') | |
349 | { | |
350 | ; | |
351 | } | |
352 | else | |
353 | bad_attach = 1; | |
354 | } | |
355 | ||
356 | if (argc < 3 || bad_attach) | |
0bc68c49 | 357 | gdbserver_usage(); |
c906108c | 358 | |
4ce44c66 JM |
359 | initialize_low (); |
360 | ||
0a30fbc4 DJ |
361 | own_buf = malloc (PBUFSIZ); |
362 | ||
45b7b345 DJ |
363 | if (pid == 0) |
364 | { | |
365 | /* Wait till we are at first instruction in program. */ | |
366 | signal = start_inferior (&argv[2], &status); | |
c906108c | 367 | |
45b7b345 DJ |
368 | /* We are now stopped at the first instruction of the target process */ |
369 | } | |
370 | else | |
371 | { | |
372 | switch (attach_inferior (pid, &status, &signal)) | |
373 | { | |
374 | case -1: | |
375 | error ("Attaching not supported on this target"); | |
376 | break; | |
377 | default: | |
378 | attached = 1; | |
379 | break; | |
380 | } | |
381 | } | |
c906108c SS |
382 | |
383 | while (1) | |
384 | { | |
385 | remote_open (argv[1]); | |
386 | ||
c5aa993b JM |
387 | restart: |
388 | setjmp (toplevel); | |
c906108c SS |
389 | while (getpkt (own_buf) > 0) |
390 | { | |
391 | unsigned char sig; | |
392 | i = 0; | |
393 | ch = own_buf[i++]; | |
394 | switch (ch) | |
395 | { | |
ce3a066d DJ |
396 | case 'q': |
397 | handle_query (own_buf); | |
398 | break; | |
c906108c SS |
399 | case 'd': |
400 | remote_debug = !remote_debug; | |
401 | break; | |
6ad8ae5c DJ |
402 | case 'D': |
403 | fprintf (stderr, "Detaching from inferior\n"); | |
404 | detach_inferior (); | |
405 | write_ok (own_buf); | |
406 | putpkt (own_buf); | |
aa691b87 | 407 | remote_close (); |
6ad8ae5c DJ |
408 | |
409 | /* If we are attached, then we can exit. Otherwise, we need to | |
410 | hang around doing nothing, until the child is gone. */ | |
411 | if (!attached) | |
412 | { | |
413 | int status, ret; | |
414 | ||
415 | do { | |
416 | ret = waitpid (signal_pid, &status, 0); | |
417 | if (WIFEXITED (status) || WIFSIGNALED (status)) | |
418 | break; | |
419 | } while (ret != -1 || errno != ECHILD); | |
420 | } | |
421 | ||
422 | exit (0); | |
423 | ||
c906108c | 424 | case '!': |
45b7b345 DJ |
425 | if (attached == 0) |
426 | { | |
427 | extended_protocol = 1; | |
428 | prepare_resume_reply (own_buf, status, signal); | |
429 | } | |
430 | else | |
431 | { | |
432 | /* We can not use the extended protocol if we are | |
433 | attached, because we can not restart the running | |
434 | program. So return unrecognized. */ | |
435 | own_buf[0] = '\0'; | |
436 | } | |
c906108c SS |
437 | break; |
438 | case '?': | |
439 | prepare_resume_reply (own_buf, status, signal); | |
440 | break; | |
441 | case 'H': | |
a06660f7 | 442 | if (own_buf[1] == 'c' || own_buf[1] == 'g' || own_buf[1] == 's') |
c906108c | 443 | { |
a06660f7 DJ |
444 | unsigned long gdb_id, thread_id; |
445 | ||
446 | gdb_id = strtoul (&own_buf[2], NULL, 16); | |
447 | thread_id = gdb_id_to_thread_id (gdb_id); | |
448 | if (thread_id == 0) | |
449 | { | |
450 | write_enn (own_buf); | |
451 | break; | |
452 | } | |
453 | ||
454 | if (own_buf[1] == 'g') | |
455 | { | |
456 | general_thread = thread_id; | |
457 | set_desired_inferior (1); | |
458 | } | |
459 | else if (own_buf[1] == 'c') | |
460 | cont_thread = thread_id; | |
461 | else if (own_buf[1] == 's') | |
462 | step_thread = thread_id; | |
463 | ||
0d62e5e8 | 464 | write_ok (own_buf); |
a06660f7 DJ |
465 | } |
466 | else | |
467 | { | |
c906108c SS |
468 | /* Silently ignore it so that gdb can extend the protocol |
469 | without compatibility headaches. */ | |
470 | own_buf[0] = '\0'; | |
c906108c SS |
471 | } |
472 | break; | |
473 | case 'g': | |
0d62e5e8 | 474 | set_desired_inferior (1); |
0a30fbc4 | 475 | registers_to_string (own_buf); |
c906108c SS |
476 | break; |
477 | case 'G': | |
0d62e5e8 | 478 | set_desired_inferior (1); |
0a30fbc4 | 479 | registers_from_string (&own_buf[1]); |
c906108c SS |
480 | write_ok (own_buf); |
481 | break; | |
482 | case 'm': | |
483 | decode_m_packet (&own_buf[1], &mem_addr, &len); | |
c3e735a6 DJ |
484 | if (read_inferior_memory (mem_addr, mem_buf, len) == 0) |
485 | convert_int_to_ascii (mem_buf, own_buf, len); | |
486 | else | |
487 | write_enn (own_buf); | |
c906108c SS |
488 | break; |
489 | case 'M': | |
490 | decode_M_packet (&own_buf[1], &mem_addr, &len, mem_buf); | |
491 | if (write_inferior_memory (mem_addr, mem_buf, len) == 0) | |
492 | write_ok (own_buf); | |
493 | else | |
494 | write_enn (own_buf); | |
495 | break; | |
496 | case 'C': | |
497 | convert_ascii_to_int (own_buf + 1, &sig, 1); | |
0e98d0a7 DJ |
498 | if (target_signal_to_host_p (sig)) |
499 | signal = target_signal_to_host (sig); | |
500 | else | |
501 | signal = 0; | |
0d62e5e8 | 502 | set_desired_inferior (0); |
0e98d0a7 | 503 | myresume (0, signal); |
0d62e5e8 | 504 | signal = mywait (&status, 1); |
c906108c SS |
505 | prepare_resume_reply (own_buf, status, signal); |
506 | break; | |
507 | case 'S': | |
508 | convert_ascii_to_int (own_buf + 1, &sig, 1); | |
0e98d0a7 DJ |
509 | if (target_signal_to_host_p (sig)) |
510 | signal = target_signal_to_host (sig); | |
511 | else | |
512 | signal = 0; | |
0d62e5e8 | 513 | set_desired_inferior (0); |
0e98d0a7 | 514 | myresume (1, signal); |
0d62e5e8 | 515 | signal = mywait (&status, 1); |
c906108c SS |
516 | prepare_resume_reply (own_buf, status, signal); |
517 | break; | |
518 | case 'c': | |
0d62e5e8 | 519 | set_desired_inferior (0); |
c906108c | 520 | myresume (0, 0); |
0d62e5e8 | 521 | signal = mywait (&status, 1); |
c906108c SS |
522 | prepare_resume_reply (own_buf, status, signal); |
523 | break; | |
524 | case 's': | |
0d62e5e8 | 525 | set_desired_inferior (0); |
c906108c | 526 | myresume (1, 0); |
0d62e5e8 | 527 | signal = mywait (&status, 1); |
c906108c SS |
528 | prepare_resume_reply (own_buf, status, signal); |
529 | break; | |
e013ee27 OF |
530 | case 'Z': |
531 | { | |
532 | char *lenptr; | |
533 | char *dataptr; | |
534 | CORE_ADDR addr = strtoul (&own_buf[3], &lenptr, 16); | |
535 | int len = strtol (lenptr + 1, &dataptr, 16); | |
536 | char type = own_buf[1]; | |
537 | ||
538 | if (the_target->insert_watchpoint == NULL | |
539 | || (type < '2' || type > '4')) | |
540 | { | |
541 | /* No watchpoint support or not a watchpoint command; | |
542 | unrecognized either way. */ | |
543 | own_buf[0] = '\0'; | |
544 | } | |
545 | else | |
546 | { | |
547 | int res; | |
548 | ||
549 | res = (*the_target->insert_watchpoint) (type, addr, len); | |
550 | if (res == 0) | |
551 | write_ok (own_buf); | |
552 | else if (res == 1) | |
553 | /* Unsupported. */ | |
554 | own_buf[0] = '\0'; | |
555 | else | |
556 | write_enn (own_buf); | |
557 | } | |
558 | break; | |
559 | } | |
560 | case 'z': | |
561 | { | |
562 | char *lenptr; | |
563 | char *dataptr; | |
564 | CORE_ADDR addr = strtoul (&own_buf[3], &lenptr, 16); | |
565 | int len = strtol (lenptr + 1, &dataptr, 16); | |
566 | char type = own_buf[1]; | |
567 | ||
568 | if (the_target->remove_watchpoint == NULL | |
569 | || (type < '2' || type > '4')) | |
570 | { | |
571 | /* No watchpoint support or not a watchpoint command; | |
572 | unrecognized either way. */ | |
573 | own_buf[0] = '\0'; | |
574 | } | |
575 | else | |
576 | { | |
577 | int res; | |
578 | ||
579 | res = (*the_target->remove_watchpoint) (type, addr, len); | |
580 | if (res == 0) | |
581 | write_ok (own_buf); | |
582 | else if (res == 1) | |
583 | /* Unsupported. */ | |
584 | own_buf[0] = '\0'; | |
585 | else | |
586 | write_enn (own_buf); | |
587 | } | |
588 | break; | |
589 | } | |
c906108c SS |
590 | case 'k': |
591 | fprintf (stderr, "Killing inferior\n"); | |
592 | kill_inferior (); | |
593 | /* When using the extended protocol, we start up a new | |
c5aa993b | 594 | debugging session. The traditional protocol will |
c906108c SS |
595 | exit instead. */ |
596 | if (extended_protocol) | |
597 | { | |
598 | write_ok (own_buf); | |
599 | fprintf (stderr, "GDBserver restarting\n"); | |
600 | ||
601 | /* Wait till we are at 1st instruction in prog. */ | |
602 | signal = start_inferior (&argv[2], &status); | |
603 | goto restart; | |
604 | break; | |
605 | } | |
606 | else | |
607 | { | |
608 | exit (0); | |
609 | break; | |
610 | } | |
611 | case 'T': | |
a06660f7 DJ |
612 | { |
613 | unsigned long gdb_id, thread_id; | |
614 | ||
615 | gdb_id = strtoul (&own_buf[1], NULL, 16); | |
616 | thread_id = gdb_id_to_thread_id (gdb_id); | |
617 | if (thread_id == 0) | |
618 | { | |
619 | write_enn (own_buf); | |
620 | break; | |
621 | } | |
622 | ||
623 | if (mythread_alive (thread_id)) | |
624 | write_ok (own_buf); | |
625 | else | |
626 | write_enn (own_buf); | |
627 | } | |
c906108c SS |
628 | break; |
629 | case 'R': | |
630 | /* Restarting the inferior is only supported in the | |
c5aa993b | 631 | extended protocol. */ |
c906108c SS |
632 | if (extended_protocol) |
633 | { | |
634 | kill_inferior (); | |
635 | write_ok (own_buf); | |
636 | fprintf (stderr, "GDBserver restarting\n"); | |
637 | ||
638 | /* Wait till we are at 1st instruction in prog. */ | |
639 | signal = start_inferior (&argv[2], &status); | |
640 | goto restart; | |
641 | break; | |
642 | } | |
643 | else | |
644 | { | |
645 | /* It is a request we don't understand. Respond with an | |
646 | empty packet so that gdb knows that we don't support this | |
647 | request. */ | |
648 | own_buf[0] = '\0'; | |
649 | break; | |
650 | } | |
64386c31 DJ |
651 | case 'v': |
652 | /* Extended (long) request. */ | |
653 | handle_v_requests (own_buf, &status, &signal); | |
654 | break; | |
c906108c SS |
655 | default: |
656 | /* It is a request we don't understand. Respond with an | |
c5aa993b JM |
657 | empty packet so that gdb knows that we don't support this |
658 | request. */ | |
c906108c SS |
659 | own_buf[0] = '\0'; |
660 | break; | |
661 | } | |
662 | ||
663 | putpkt (own_buf); | |
664 | ||
665 | if (status == 'W') | |
666 | fprintf (stderr, | |
3a7fb99b | 667 | "\nChild exited with status %d\n", signal); |
c906108c | 668 | if (status == 'X') |
3a7fb99b DJ |
669 | fprintf (stderr, "\nChild terminated with signal = 0x%x\n", |
670 | signal); | |
c906108c SS |
671 | if (status == 'W' || status == 'X') |
672 | { | |
673 | if (extended_protocol) | |
674 | { | |
675 | fprintf (stderr, "Killing inferior\n"); | |
676 | kill_inferior (); | |
677 | write_ok (own_buf); | |
678 | fprintf (stderr, "GDBserver restarting\n"); | |
679 | ||
680 | /* Wait till we are at 1st instruction in prog. */ | |
681 | signal = start_inferior (&argv[2], &status); | |
682 | goto restart; | |
683 | break; | |
684 | } | |
685 | else | |
686 | { | |
687 | fprintf (stderr, "GDBserver exiting\n"); | |
688 | exit (0); | |
689 | } | |
690 | } | |
691 | } | |
692 | ||
693 | /* We come here when getpkt fails. | |
694 | ||
c5aa993b JM |
695 | For the extended remote protocol we exit (and this is the only |
696 | way we gracefully exit!). | |
c906108c | 697 | |
c5aa993b JM |
698 | For the traditional remote protocol close the connection, |
699 | and re-open it at the top of the loop. */ | |
c906108c SS |
700 | if (extended_protocol) |
701 | { | |
702 | remote_close (); | |
703 | exit (0); | |
704 | } | |
705 | else | |
706 | { | |
45b7b345 DJ |
707 | fprintf (stderr, "Remote side has terminated connection. " |
708 | "GDBserver will reopen the connection.\n"); | |
c906108c SS |
709 | remote_close (); |
710 | } | |
711 | } | |
712 | } |