Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Main code for remote server for GDB. |
6f0f660e | 2 | Copyright (C) 1989, 1993, 1994, 1995, 1997, 1998, 1999, 2000, 2002, 2003, 2004, |
dd24457d | 3 | 2005, 2006 |
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 | |
6f0f660e EZ |
20 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
21 | Boston, MA 02110-1301, USA. */ | |
c906108c SS |
22 | |
23 | #include "server.h" | |
24 | ||
a9fa9f7d DJ |
25 | #include <unistd.h> |
26 | #include <signal.h> | |
b80864fb | 27 | #if HAVE_SYS_WAIT_H |
a9fa9f7d | 28 | #include <sys/wait.h> |
b80864fb | 29 | #endif |
a9fa9f7d | 30 | |
a1928bad DJ |
31 | unsigned long cont_thread; |
32 | unsigned long general_thread; | |
33 | unsigned long step_thread; | |
34 | unsigned long thread_from_wait; | |
35 | unsigned long old_thread_from_wait; | |
c906108c | 36 | int extended_protocol; |
0d62e5e8 DJ |
37 | int server_waiting; |
38 | ||
c906108c | 39 | jmp_buf toplevel; |
c906108c | 40 | |
a9fa9f7d DJ |
41 | /* The PID of the originally created or attached inferior. Used to |
42 | send signals to the process when GDB sends us an asynchronous interrupt | |
43 | (user hitting Control-C in the client), and to wait for the child to exit | |
44 | when no longer debugging it. */ | |
45 | ||
a1928bad | 46 | unsigned long signal_pid; |
a9fa9f7d | 47 | |
290fadea RS |
48 | #ifdef SIGTTOU |
49 | /* A file descriptor for the controlling terminal. */ | |
50 | int terminal_fd; | |
51 | ||
52 | /* TERMINAL_FD's original foreground group. */ | |
53 | pid_t old_foreground_pgrp; | |
54 | ||
55 | /* Hand back terminal ownership to the original foreground group. */ | |
56 | ||
57 | static void | |
58 | restore_old_foreground_pgrp (void) | |
59 | { | |
60 | tcsetpgrp (terminal_fd, old_foreground_pgrp); | |
61 | } | |
62 | #endif | |
63 | ||
fc620387 | 64 | static int |
da85418c | 65 | start_inferior (char *argv[], char *statusptr) |
c906108c | 66 | { |
b80864fb | 67 | #ifdef SIGTTOU |
a9fa9f7d DJ |
68 | signal (SIGTTOU, SIG_DFL); |
69 | signal (SIGTTIN, SIG_DFL); | |
b80864fb | 70 | #endif |
a9fa9f7d DJ |
71 | |
72 | signal_pid = create_inferior (argv[0], argv); | |
0d62e5e8 | 73 | |
a1928bad | 74 | fprintf (stderr, "Process %s created; pid = %ld\n", argv[0], |
a9fa9f7d | 75 | signal_pid); |
b80864fb | 76 | fflush (stderr); |
a9fa9f7d | 77 | |
b80864fb | 78 | #ifdef SIGTTOU |
a9fa9f7d DJ |
79 | signal (SIGTTOU, SIG_IGN); |
80 | signal (SIGTTIN, SIG_IGN); | |
290fadea RS |
81 | terminal_fd = fileno (stderr); |
82 | old_foreground_pgrp = tcgetpgrp (terminal_fd); | |
83 | tcsetpgrp (terminal_fd, signal_pid); | |
84 | atexit (restore_old_foreground_pgrp); | |
b80864fb | 85 | #endif |
c906108c SS |
86 | |
87 | /* Wait till we are at 1st instruction in program, return signal number. */ | |
0d62e5e8 | 88 | return mywait (statusptr, 0); |
c906108c SS |
89 | } |
90 | ||
45b7b345 | 91 | static int |
fc620387 | 92 | attach_inferior (int pid, char *statusptr, int *sigptr) |
45b7b345 DJ |
93 | { |
94 | /* myattach should return -1 if attaching is unsupported, | |
95 | 0 if it succeeded, and call error() otherwise. */ | |
a9fa9f7d | 96 | |
45b7b345 DJ |
97 | if (myattach (pid) != 0) |
98 | return -1; | |
99 | ||
6910d122 | 100 | fprintf (stderr, "Attached; pid = %d\n", pid); |
b80864fb | 101 | fflush (stderr); |
6910d122 | 102 | |
a9fa9f7d DJ |
103 | /* FIXME - It may be that we should get the SIGNAL_PID from the |
104 | attach function, so that it can be the main thread instead of | |
105 | whichever we were told to attach to. */ | |
106 | signal_pid = pid; | |
107 | ||
0d62e5e8 | 108 | *sigptr = mywait (statusptr, 0); |
45b7b345 | 109 | |
9db87ebd DJ |
110 | /* GDB knows to ignore the first SIGSTOP after attaching to a running |
111 | process using the "attach" command, but this is different; it's | |
112 | just using "target remote". Pretend it's just starting up. */ | |
b80864fb DJ |
113 | if (*statusptr == 'T' && *sigptr == TARGET_SIGNAL_STOP) |
114 | *sigptr = TARGET_SIGNAL_TRAP; | |
9db87ebd | 115 | |
45b7b345 DJ |
116 | return 0; |
117 | } | |
118 | ||
c906108c | 119 | extern int remote_debug; |
ce3a066d | 120 | |
0876f84a DJ |
121 | /* Decode a qXfer read request. Return 0 if everything looks OK, |
122 | or -1 otherwise. */ | |
123 | ||
124 | static int | |
125 | decode_xfer_read (char *buf, char **annex, CORE_ADDR *ofs, unsigned int *len) | |
126 | { | |
127 | /* Extract and NUL-terminate the annex. */ | |
128 | *annex = buf; | |
129 | while (*buf && *buf != ':') | |
130 | buf++; | |
131 | if (*buf == '\0') | |
132 | return -1; | |
133 | *buf++ = 0; | |
134 | ||
135 | /* After the read/write marker and annex, qXfer looks like a | |
136 | traditional 'm' packet. */ | |
137 | decode_m_packet (buf, ofs, len); | |
138 | ||
139 | return 0; | |
140 | } | |
141 | ||
142 | /* Write the response to a successful qXfer read. Returns the | |
143 | length of the (binary) data stored in BUF, corresponding | |
144 | to as much of DATA/LEN as we could fit. IS_MORE controls | |
145 | the first character of the response. */ | |
146 | static int | |
147 | write_qxfer_response (char *buf, unsigned char *data, int len, int is_more) | |
148 | { | |
149 | int out_len; | |
150 | ||
151 | if (is_more) | |
152 | buf[0] = 'm'; | |
153 | else | |
154 | buf[0] = 'l'; | |
155 | ||
156 | return remote_escape_output (data, len, (unsigned char *) buf + 1, &out_len, | |
157 | PBUFSIZ - 2) + 1; | |
158 | } | |
159 | ||
ce3a066d DJ |
160 | /* Handle all of the extended 'q' packets. */ |
161 | void | |
0876f84a | 162 | handle_query (char *own_buf, int *new_packet_len_p) |
ce3a066d | 163 | { |
0d62e5e8 DJ |
164 | static struct inferior_list_entry *thread_ptr; |
165 | ||
ce3a066d DJ |
166 | if (strcmp ("qSymbol::", own_buf) == 0) |
167 | { | |
2f2893d9 DJ |
168 | if (the_target->look_up_symbols != NULL) |
169 | (*the_target->look_up_symbols) (); | |
170 | ||
ce3a066d DJ |
171 | strcpy (own_buf, "OK"); |
172 | return; | |
173 | } | |
174 | ||
0d62e5e8 DJ |
175 | if (strcmp ("qfThreadInfo", own_buf) == 0) |
176 | { | |
177 | thread_ptr = all_threads.head; | |
a06660f7 | 178 | sprintf (own_buf, "m%x", thread_to_gdb_id ((struct thread_info *)thread_ptr)); |
0d62e5e8 DJ |
179 | thread_ptr = thread_ptr->next; |
180 | return; | |
181 | } | |
aa691b87 | 182 | |
0d62e5e8 DJ |
183 | if (strcmp ("qsThreadInfo", own_buf) == 0) |
184 | { | |
185 | if (thread_ptr != NULL) | |
186 | { | |
a06660f7 | 187 | sprintf (own_buf, "m%x", thread_to_gdb_id ((struct thread_info *)thread_ptr)); |
0d62e5e8 DJ |
188 | thread_ptr = thread_ptr->next; |
189 | return; | |
190 | } | |
191 | else | |
192 | { | |
193 | sprintf (own_buf, "l"); | |
194 | return; | |
195 | } | |
196 | } | |
aa691b87 | 197 | |
52fb6437 NS |
198 | if (the_target->read_offsets != NULL |
199 | && strcmp ("qOffsets", own_buf) == 0) | |
200 | { | |
201 | CORE_ADDR text, data; | |
202 | ||
203 | if (the_target->read_offsets (&text, &data)) | |
204 | sprintf (own_buf, "Text=%lX;Data=%lX;Bss=%lX", | |
205 | (long)text, (long)data, (long)data); | |
206 | else | |
207 | write_enn (own_buf); | |
208 | ||
209 | return; | |
210 | } | |
211 | ||
aa691b87 | 212 | if (the_target->read_auxv != NULL |
0876f84a | 213 | && strncmp ("qXfer:auxv:read:", own_buf, 16) == 0) |
aa691b87 | 214 | { |
0876f84a DJ |
215 | unsigned char *data; |
216 | int n; | |
aa691b87 RM |
217 | CORE_ADDR ofs; |
218 | unsigned int len; | |
0876f84a DJ |
219 | char *annex; |
220 | ||
221 | /* Reject any annex; grab the offset and length. */ | |
222 | if (decode_xfer_read (own_buf + 16, &annex, &ofs, &len) < 0 | |
223 | || annex[0] != '\0') | |
224 | { | |
225 | strcpy (own_buf, "E00"); | |
226 | return; | |
227 | } | |
228 | ||
229 | /* Read one extra byte, as an indicator of whether there is | |
230 | more. */ | |
231 | if (len > PBUFSIZ - 2) | |
232 | len = PBUFSIZ - 2; | |
233 | data = malloc (len + 1); | |
234 | n = (*the_target->read_auxv) (ofs, data, len + 1); | |
235 | if (n > len) | |
236 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); | |
aa691b87 | 237 | else |
0876f84a DJ |
238 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); |
239 | ||
240 | free (data); | |
241 | ||
aa691b87 RM |
242 | return; |
243 | } | |
244 | ||
be2a5f71 DJ |
245 | /* Protocol features query. */ |
246 | if (strncmp ("qSupported", own_buf, 10) == 0 | |
247 | && (own_buf[10] == ':' || own_buf[10] == '\0')) | |
248 | { | |
249 | sprintf (own_buf, "PacketSize=%x", PBUFSIZ - 1); | |
0876f84a DJ |
250 | |
251 | if (the_target->read_auxv != NULL) | |
9f2e1e63 | 252 | strcat (own_buf, ";qXfer:auxv:read+"); |
0876f84a | 253 | |
be2a5f71 DJ |
254 | return; |
255 | } | |
256 | ||
ce3a066d DJ |
257 | /* Otherwise we didn't know what packet it was. Say we didn't |
258 | understand it. */ | |
259 | own_buf[0] = 0; | |
260 | } | |
261 | ||
64386c31 DJ |
262 | /* Parse vCont packets. */ |
263 | void | |
fc620387 | 264 | handle_v_cont (char *own_buf, char *status, int *signal) |
64386c31 DJ |
265 | { |
266 | char *p, *q; | |
267 | int n = 0, i = 0; | |
268 | struct thread_resume *resume_info, default_action; | |
269 | ||
270 | /* Count the number of semicolons in the packet. There should be one | |
271 | for every action. */ | |
272 | p = &own_buf[5]; | |
273 | while (p) | |
274 | { | |
275 | n++; | |
276 | p++; | |
277 | p = strchr (p, ';'); | |
278 | } | |
279 | /* Allocate room for one extra action, for the default remain-stopped | |
280 | behavior; if no default action is in the list, we'll need the extra | |
281 | slot. */ | |
282 | resume_info = malloc ((n + 1) * sizeof (resume_info[0])); | |
283 | ||
284 | default_action.thread = -1; | |
285 | default_action.leave_stopped = 1; | |
286 | default_action.step = 0; | |
287 | default_action.sig = 0; | |
288 | ||
289 | p = &own_buf[5]; | |
290 | i = 0; | |
291 | while (*p) | |
292 | { | |
293 | p++; | |
294 | ||
295 | resume_info[i].leave_stopped = 0; | |
296 | ||
297 | if (p[0] == 's' || p[0] == 'S') | |
298 | resume_info[i].step = 1; | |
299 | else if (p[0] == 'c' || p[0] == 'C') | |
300 | resume_info[i].step = 0; | |
301 | else | |
302 | goto err; | |
303 | ||
304 | if (p[0] == 'S' || p[0] == 'C') | |
305 | { | |
306 | int sig; | |
307 | sig = strtol (p + 1, &q, 16); | |
308 | if (p == q) | |
309 | goto err; | |
310 | p = q; | |
311 | ||
312 | if (!target_signal_to_host_p (sig)) | |
313 | goto err; | |
314 | resume_info[i].sig = target_signal_to_host (sig); | |
315 | } | |
316 | else | |
317 | { | |
318 | resume_info[i].sig = 0; | |
319 | p = p + 1; | |
320 | } | |
321 | ||
322 | if (p[0] == 0) | |
323 | { | |
324 | resume_info[i].thread = -1; | |
325 | default_action = resume_info[i]; | |
326 | ||
327 | /* Note: we don't increment i here, we'll overwrite this entry | |
328 | the next time through. */ | |
329 | } | |
330 | else if (p[0] == ':') | |
331 | { | |
a06660f7 DJ |
332 | unsigned int gdb_id = strtoul (p + 1, &q, 16); |
333 | unsigned long thread_id; | |
334 | ||
64386c31 DJ |
335 | if (p == q) |
336 | goto err; | |
337 | p = q; | |
338 | if (p[0] != ';' && p[0] != 0) | |
339 | goto err; | |
340 | ||
a06660f7 DJ |
341 | thread_id = gdb_id_to_thread_id (gdb_id); |
342 | if (thread_id) | |
343 | resume_info[i].thread = thread_id; | |
344 | else | |
345 | goto err; | |
346 | ||
64386c31 DJ |
347 | i++; |
348 | } | |
349 | } | |
350 | ||
351 | resume_info[i] = default_action; | |
352 | ||
353 | /* Still used in occasional places in the backend. */ | |
354 | if (n == 1 && resume_info[0].thread != -1) | |
355 | cont_thread = resume_info[0].thread; | |
356 | else | |
357 | cont_thread = -1; | |
dc3f8883 | 358 | set_desired_inferior (0); |
64386c31 DJ |
359 | |
360 | (*the_target->resume) (resume_info); | |
361 | ||
362 | free (resume_info); | |
363 | ||
364 | *signal = mywait (status, 1); | |
365 | prepare_resume_reply (own_buf, *status, *signal); | |
366 | return; | |
367 | ||
368 | err: | |
369 | /* No other way to report an error... */ | |
370 | strcpy (own_buf, ""); | |
371 | free (resume_info); | |
372 | return; | |
373 | } | |
374 | ||
375 | /* Handle all of the extended 'v' packets. */ | |
376 | void | |
fc620387 | 377 | handle_v_requests (char *own_buf, char *status, int *signal) |
64386c31 DJ |
378 | { |
379 | if (strncmp (own_buf, "vCont;", 6) == 0) | |
380 | { | |
381 | handle_v_cont (own_buf, status, signal); | |
382 | return; | |
383 | } | |
384 | ||
385 | if (strncmp (own_buf, "vCont?", 6) == 0) | |
386 | { | |
387 | strcpy (own_buf, "vCont;c;C;s;S"); | |
388 | return; | |
389 | } | |
390 | ||
391 | /* Otherwise we didn't know what packet it was. Say we didn't | |
392 | understand it. */ | |
393 | own_buf[0] = 0; | |
394 | return; | |
395 | } | |
396 | ||
397 | void | |
398 | myresume (int step, int sig) | |
399 | { | |
400 | struct thread_resume resume_info[2]; | |
401 | int n = 0; | |
402 | ||
d592fa2f | 403 | if (step || sig || (cont_thread != 0 && cont_thread != -1)) |
64386c31 DJ |
404 | { |
405 | resume_info[0].thread | |
406 | = ((struct inferior_list_entry *) current_inferior)->id; | |
407 | resume_info[0].step = step; | |
408 | resume_info[0].sig = sig; | |
409 | resume_info[0].leave_stopped = 0; | |
410 | n++; | |
411 | } | |
412 | resume_info[n].thread = -1; | |
413 | resume_info[n].step = 0; | |
414 | resume_info[n].sig = 0; | |
d592fa2f | 415 | resume_info[n].leave_stopped = (cont_thread != 0 && cont_thread != -1); |
64386c31 DJ |
416 | |
417 | (*the_target->resume) (resume_info); | |
418 | } | |
419 | ||
0729219d | 420 | static int attached; |
c906108c | 421 | |
dd24457d DJ |
422 | static void |
423 | gdbserver_version (void) | |
424 | { | |
425 | printf ("GNU gdbserver %s\n" | |
426 | "Copyright (C) 2006 Free Software Foundation, Inc.\n" | |
427 | "gdbserver is free software, covered by the GNU General Public License.\n" | |
428 | "This gdbserver was configured as \"%s\"\n", | |
429 | version, host_name); | |
430 | } | |
431 | ||
0bc68c49 DJ |
432 | static void |
433 | gdbserver_usage (void) | |
434 | { | |
dd24457d DJ |
435 | printf ("Usage:\tgdbserver COMM PROG [ARGS ...]\n" |
436 | "\tgdbserver COMM --attach PID\n" | |
437 | "\n" | |
438 | "COMM may either be a tty device (for serial debugging), or \n" | |
439 | "HOST:PORT to listen for a TCP connection.\n"); | |
0bc68c49 DJ |
440 | } |
441 | ||
c906108c | 442 | int |
da85418c | 443 | main (int argc, char *argv[]) |
c906108c | 444 | { |
f450004a | 445 | char ch, status, *own_buf; |
7fb85e41 | 446 | unsigned char *mem_buf; |
c906108c | 447 | int i = 0; |
fc620387 | 448 | int signal; |
c906108c SS |
449 | unsigned int len; |
450 | CORE_ADDR mem_addr; | |
0729219d DJ |
451 | int bad_attach; |
452 | int pid; | |
45b7b345 | 453 | char *arg_end; |
c906108c | 454 | |
dd24457d DJ |
455 | if (argc >= 2 && strcmp (argv[1], "--version") == 0) |
456 | { | |
457 | gdbserver_version (); | |
458 | exit (0); | |
459 | } | |
460 | ||
461 | if (argc >= 2 && strcmp (argv[1], "--help") == 0) | |
462 | { | |
463 | gdbserver_usage (); | |
464 | exit (0); | |
465 | } | |
466 | ||
c5aa993b | 467 | if (setjmp (toplevel)) |
c906108c | 468 | { |
c5aa993b JM |
469 | fprintf (stderr, "Exiting\n"); |
470 | exit (1); | |
c906108c SS |
471 | } |
472 | ||
0729219d DJ |
473 | bad_attach = 0; |
474 | pid = 0; | |
475 | attached = 0; | |
45b7b345 DJ |
476 | if (argc >= 3 && strcmp (argv[2], "--attach") == 0) |
477 | { | |
478 | if (argc == 4 | |
479 | && argv[3] != '\0' | |
480 | && (pid = strtoul (argv[3], &arg_end, 10)) != 0 | |
481 | && *arg_end == '\0') | |
482 | { | |
483 | ; | |
484 | } | |
485 | else | |
486 | bad_attach = 1; | |
487 | } | |
488 | ||
489 | if (argc < 3 || bad_attach) | |
dd24457d DJ |
490 | { |
491 | gdbserver_usage (); | |
492 | exit (1); | |
493 | } | |
c906108c | 494 | |
4ce44c66 JM |
495 | initialize_low (); |
496 | ||
0a30fbc4 | 497 | own_buf = malloc (PBUFSIZ); |
7fb85e41 | 498 | mem_buf = malloc (PBUFSIZ); |
0a30fbc4 | 499 | |
45b7b345 DJ |
500 | if (pid == 0) |
501 | { | |
502 | /* Wait till we are at first instruction in program. */ | |
503 | signal = start_inferior (&argv[2], &status); | |
c906108c | 504 | |
45b7b345 DJ |
505 | /* We are now stopped at the first instruction of the target process */ |
506 | } | |
507 | else | |
508 | { | |
509 | switch (attach_inferior (pid, &status, &signal)) | |
510 | { | |
511 | case -1: | |
512 | error ("Attaching not supported on this target"); | |
513 | break; | |
514 | default: | |
515 | attached = 1; | |
516 | break; | |
517 | } | |
518 | } | |
c906108c SS |
519 | |
520 | while (1) | |
521 | { | |
522 | remote_open (argv[1]); | |
523 | ||
c5aa993b JM |
524 | restart: |
525 | setjmp (toplevel); | |
01f9e8fa | 526 | while (1) |
c906108c SS |
527 | { |
528 | unsigned char sig; | |
01f9e8fa DJ |
529 | int packet_len; |
530 | int new_packet_len = -1; | |
531 | ||
532 | packet_len = getpkt (own_buf); | |
533 | if (packet_len <= 0) | |
534 | break; | |
535 | ||
c906108c SS |
536 | i = 0; |
537 | ch = own_buf[i++]; | |
538 | switch (ch) | |
539 | { | |
ce3a066d | 540 | case 'q': |
0876f84a | 541 | handle_query (own_buf, &new_packet_len); |
ce3a066d | 542 | break; |
c906108c SS |
543 | case 'd': |
544 | remote_debug = !remote_debug; | |
545 | break; | |
b80864fb DJ |
546 | #ifndef USE_WIN32API |
547 | /* Skip "detach" support on mingw32, since we don't have | |
548 | waitpid. */ | |
6ad8ae5c DJ |
549 | case 'D': |
550 | fprintf (stderr, "Detaching from inferior\n"); | |
551 | detach_inferior (); | |
552 | write_ok (own_buf); | |
553 | putpkt (own_buf); | |
aa691b87 | 554 | remote_close (); |
6ad8ae5c DJ |
555 | |
556 | /* If we are attached, then we can exit. Otherwise, we need to | |
557 | hang around doing nothing, until the child is gone. */ | |
558 | if (!attached) | |
559 | { | |
560 | int status, ret; | |
561 | ||
562 | do { | |
563 | ret = waitpid (signal_pid, &status, 0); | |
564 | if (WIFEXITED (status) || WIFSIGNALED (status)) | |
565 | break; | |
566 | } while (ret != -1 || errno != ECHILD); | |
567 | } | |
568 | ||
569 | exit (0); | |
b80864fb | 570 | #endif |
6ad8ae5c | 571 | |
c906108c | 572 | case '!': |
45b7b345 DJ |
573 | if (attached == 0) |
574 | { | |
575 | extended_protocol = 1; | |
576 | prepare_resume_reply (own_buf, status, signal); | |
577 | } | |
578 | else | |
579 | { | |
580 | /* We can not use the extended protocol if we are | |
581 | attached, because we can not restart the running | |
582 | program. So return unrecognized. */ | |
583 | own_buf[0] = '\0'; | |
584 | } | |
c906108c SS |
585 | break; |
586 | case '?': | |
587 | prepare_resume_reply (own_buf, status, signal); | |
588 | break; | |
589 | case 'H': | |
a06660f7 | 590 | if (own_buf[1] == 'c' || own_buf[1] == 'g' || own_buf[1] == 's') |
c906108c | 591 | { |
a06660f7 DJ |
592 | unsigned long gdb_id, thread_id; |
593 | ||
594 | gdb_id = strtoul (&own_buf[2], NULL, 16); | |
595 | thread_id = gdb_id_to_thread_id (gdb_id); | |
596 | if (thread_id == 0) | |
597 | { | |
598 | write_enn (own_buf); | |
599 | break; | |
600 | } | |
601 | ||
602 | if (own_buf[1] == 'g') | |
603 | { | |
604 | general_thread = thread_id; | |
605 | set_desired_inferior (1); | |
606 | } | |
607 | else if (own_buf[1] == 'c') | |
608 | cont_thread = thread_id; | |
609 | else if (own_buf[1] == 's') | |
610 | step_thread = thread_id; | |
611 | ||
0d62e5e8 | 612 | write_ok (own_buf); |
a06660f7 DJ |
613 | } |
614 | else | |
615 | { | |
c906108c SS |
616 | /* Silently ignore it so that gdb can extend the protocol |
617 | without compatibility headaches. */ | |
618 | own_buf[0] = '\0'; | |
c906108c SS |
619 | } |
620 | break; | |
621 | case 'g': | |
0d62e5e8 | 622 | set_desired_inferior (1); |
0a30fbc4 | 623 | registers_to_string (own_buf); |
c906108c SS |
624 | break; |
625 | case 'G': | |
0d62e5e8 | 626 | set_desired_inferior (1); |
0a30fbc4 | 627 | registers_from_string (&own_buf[1]); |
c906108c SS |
628 | write_ok (own_buf); |
629 | break; | |
630 | case 'm': | |
631 | decode_m_packet (&own_buf[1], &mem_addr, &len); | |
c3e735a6 DJ |
632 | if (read_inferior_memory (mem_addr, mem_buf, len) == 0) |
633 | convert_int_to_ascii (mem_buf, own_buf, len); | |
634 | else | |
635 | write_enn (own_buf); | |
c906108c SS |
636 | break; |
637 | case 'M': | |
638 | decode_M_packet (&own_buf[1], &mem_addr, &len, mem_buf); | |
639 | if (write_inferior_memory (mem_addr, mem_buf, len) == 0) | |
640 | write_ok (own_buf); | |
641 | else | |
642 | write_enn (own_buf); | |
643 | break; | |
01f9e8fa DJ |
644 | case 'X': |
645 | if (decode_X_packet (&own_buf[1], packet_len - 1, | |
646 | &mem_addr, &len, mem_buf) < 0 | |
647 | || write_inferior_memory (mem_addr, mem_buf, len) != 0) | |
648 | write_enn (own_buf); | |
649 | else | |
650 | write_ok (own_buf); | |
651 | break; | |
c906108c SS |
652 | case 'C': |
653 | convert_ascii_to_int (own_buf + 1, &sig, 1); | |
0e98d0a7 DJ |
654 | if (target_signal_to_host_p (sig)) |
655 | signal = target_signal_to_host (sig); | |
656 | else | |
657 | signal = 0; | |
0d62e5e8 | 658 | set_desired_inferior (0); |
0e98d0a7 | 659 | myresume (0, signal); |
0d62e5e8 | 660 | signal = mywait (&status, 1); |
c906108c SS |
661 | prepare_resume_reply (own_buf, status, signal); |
662 | break; | |
663 | case 'S': | |
664 | convert_ascii_to_int (own_buf + 1, &sig, 1); | |
0e98d0a7 DJ |
665 | if (target_signal_to_host_p (sig)) |
666 | signal = target_signal_to_host (sig); | |
667 | else | |
668 | signal = 0; | |
0d62e5e8 | 669 | set_desired_inferior (0); |
0e98d0a7 | 670 | myresume (1, signal); |
0d62e5e8 | 671 | signal = mywait (&status, 1); |
c906108c SS |
672 | prepare_resume_reply (own_buf, status, signal); |
673 | break; | |
674 | case 'c': | |
0d62e5e8 | 675 | set_desired_inferior (0); |
c906108c | 676 | myresume (0, 0); |
0d62e5e8 | 677 | signal = mywait (&status, 1); |
c906108c SS |
678 | prepare_resume_reply (own_buf, status, signal); |
679 | break; | |
680 | case 's': | |
0d62e5e8 | 681 | set_desired_inferior (0); |
c906108c | 682 | myresume (1, 0); |
0d62e5e8 | 683 | signal = mywait (&status, 1); |
c906108c SS |
684 | prepare_resume_reply (own_buf, status, signal); |
685 | break; | |
e013ee27 OF |
686 | case 'Z': |
687 | { | |
688 | char *lenptr; | |
689 | char *dataptr; | |
690 | CORE_ADDR addr = strtoul (&own_buf[3], &lenptr, 16); | |
691 | int len = strtol (lenptr + 1, &dataptr, 16); | |
692 | char type = own_buf[1]; | |
693 | ||
694 | if (the_target->insert_watchpoint == NULL | |
695 | || (type < '2' || type > '4')) | |
696 | { | |
697 | /* No watchpoint support or not a watchpoint command; | |
698 | unrecognized either way. */ | |
699 | own_buf[0] = '\0'; | |
700 | } | |
701 | else | |
702 | { | |
703 | int res; | |
704 | ||
705 | res = (*the_target->insert_watchpoint) (type, addr, len); | |
706 | if (res == 0) | |
707 | write_ok (own_buf); | |
708 | else if (res == 1) | |
709 | /* Unsupported. */ | |
710 | own_buf[0] = '\0'; | |
711 | else | |
712 | write_enn (own_buf); | |
713 | } | |
714 | break; | |
715 | } | |
716 | case 'z': | |
717 | { | |
718 | char *lenptr; | |
719 | char *dataptr; | |
720 | CORE_ADDR addr = strtoul (&own_buf[3], &lenptr, 16); | |
721 | int len = strtol (lenptr + 1, &dataptr, 16); | |
722 | char type = own_buf[1]; | |
723 | ||
724 | if (the_target->remove_watchpoint == NULL | |
725 | || (type < '2' || type > '4')) | |
726 | { | |
727 | /* No watchpoint support or not a watchpoint command; | |
728 | unrecognized either way. */ | |
729 | own_buf[0] = '\0'; | |
730 | } | |
731 | else | |
732 | { | |
733 | int res; | |
734 | ||
735 | res = (*the_target->remove_watchpoint) (type, addr, len); | |
736 | if (res == 0) | |
737 | write_ok (own_buf); | |
738 | else if (res == 1) | |
739 | /* Unsupported. */ | |
740 | own_buf[0] = '\0'; | |
741 | else | |
742 | write_enn (own_buf); | |
743 | } | |
744 | break; | |
745 | } | |
c906108c SS |
746 | case 'k': |
747 | fprintf (stderr, "Killing inferior\n"); | |
748 | kill_inferior (); | |
749 | /* When using the extended protocol, we start up a new | |
c5aa993b | 750 | debugging session. The traditional protocol will |
c906108c SS |
751 | exit instead. */ |
752 | if (extended_protocol) | |
753 | { | |
754 | write_ok (own_buf); | |
755 | fprintf (stderr, "GDBserver restarting\n"); | |
756 | ||
757 | /* Wait till we are at 1st instruction in prog. */ | |
758 | signal = start_inferior (&argv[2], &status); | |
759 | goto restart; | |
760 | break; | |
761 | } | |
762 | else | |
763 | { | |
764 | exit (0); | |
765 | break; | |
766 | } | |
767 | case 'T': | |
a06660f7 DJ |
768 | { |
769 | unsigned long gdb_id, thread_id; | |
770 | ||
771 | gdb_id = strtoul (&own_buf[1], NULL, 16); | |
772 | thread_id = gdb_id_to_thread_id (gdb_id); | |
773 | if (thread_id == 0) | |
774 | { | |
775 | write_enn (own_buf); | |
776 | break; | |
777 | } | |
778 | ||
779 | if (mythread_alive (thread_id)) | |
780 | write_ok (own_buf); | |
781 | else | |
782 | write_enn (own_buf); | |
783 | } | |
c906108c SS |
784 | break; |
785 | case 'R': | |
786 | /* Restarting the inferior is only supported in the | |
c5aa993b | 787 | extended protocol. */ |
c906108c SS |
788 | if (extended_protocol) |
789 | { | |
790 | kill_inferior (); | |
791 | write_ok (own_buf); | |
792 | fprintf (stderr, "GDBserver restarting\n"); | |
793 | ||
794 | /* Wait till we are at 1st instruction in prog. */ | |
795 | signal = start_inferior (&argv[2], &status); | |
796 | goto restart; | |
797 | break; | |
798 | } | |
799 | else | |
800 | { | |
801 | /* It is a request we don't understand. Respond with an | |
802 | empty packet so that gdb knows that we don't support this | |
803 | request. */ | |
804 | own_buf[0] = '\0'; | |
805 | break; | |
806 | } | |
64386c31 DJ |
807 | case 'v': |
808 | /* Extended (long) request. */ | |
809 | handle_v_requests (own_buf, &status, &signal); | |
810 | break; | |
c906108c SS |
811 | default: |
812 | /* It is a request we don't understand. Respond with an | |
c5aa993b JM |
813 | empty packet so that gdb knows that we don't support this |
814 | request. */ | |
c906108c SS |
815 | own_buf[0] = '\0'; |
816 | break; | |
817 | } | |
818 | ||
01f9e8fa DJ |
819 | if (new_packet_len != -1) |
820 | putpkt_binary (own_buf, new_packet_len); | |
821 | else | |
822 | putpkt (own_buf); | |
c906108c SS |
823 | |
824 | if (status == 'W') | |
825 | fprintf (stderr, | |
3a7fb99b | 826 | "\nChild exited with status %d\n", signal); |
c906108c | 827 | if (status == 'X') |
b80864fb DJ |
828 | fprintf (stderr, "\nChild terminated with signal = 0x%x (%s)\n", |
829 | target_signal_to_host (signal), | |
830 | target_signal_to_name (signal)); | |
c906108c SS |
831 | if (status == 'W' || status == 'X') |
832 | { | |
833 | if (extended_protocol) | |
834 | { | |
835 | fprintf (stderr, "Killing inferior\n"); | |
836 | kill_inferior (); | |
837 | write_ok (own_buf); | |
838 | fprintf (stderr, "GDBserver restarting\n"); | |
839 | ||
840 | /* Wait till we are at 1st instruction in prog. */ | |
841 | signal = start_inferior (&argv[2], &status); | |
842 | goto restart; | |
843 | break; | |
844 | } | |
845 | else | |
846 | { | |
847 | fprintf (stderr, "GDBserver exiting\n"); | |
848 | exit (0); | |
849 | } | |
850 | } | |
851 | } | |
852 | ||
853 | /* We come here when getpkt fails. | |
854 | ||
c5aa993b JM |
855 | For the extended remote protocol we exit (and this is the only |
856 | way we gracefully exit!). | |
c906108c | 857 | |
c5aa993b JM |
858 | For the traditional remote protocol close the connection, |
859 | and re-open it at the top of the loop. */ | |
c906108c SS |
860 | if (extended_protocol) |
861 | { | |
862 | remote_close (); | |
863 | exit (0); | |
864 | } | |
865 | else | |
866 | { | |
45b7b345 DJ |
867 | fprintf (stderr, "Remote side has terminated connection. " |
868 | "GDBserver will reopen the connection.\n"); | |
c906108c SS |
869 | remote_close (); |
870 | } | |
871 | } | |
872 | } |