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c906108c | 1 | /* Main code for remote server for GDB. |
6aba47ca | 2 | Copyright (C) 1989, 1993, 1994, 1995, 1997, 1998, 1999, 2000, 2002, 2003, |
4c38e0a4 | 3 | 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software 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" | |
21 | ||
68070c10 | 22 | #if HAVE_UNISTD_H |
a9fa9f7d | 23 | #include <unistd.h> |
68070c10 PA |
24 | #endif |
25 | #if HAVE_SIGNAL_H | |
a9fa9f7d | 26 | #include <signal.h> |
68070c10 | 27 | #endif |
b80864fb | 28 | #if HAVE_SYS_WAIT_H |
a9fa9f7d | 29 | #include <sys/wait.h> |
b80864fb | 30 | #endif |
ec56be1b PA |
31 | #if HAVE_MALLOC_H |
32 | #include <malloc.h> | |
33 | #endif | |
a9fa9f7d | 34 | |
95954743 PA |
35 | ptid_t cont_thread; |
36 | ptid_t general_thread; | |
37 | ptid_t step_thread; | |
5b1c542e | 38 | |
0d62e5e8 DJ |
39 | int server_waiting; |
40 | ||
2d717e4f | 41 | static int extended_protocol; |
2d717e4f DJ |
42 | static int response_needed; |
43 | static int exit_requested; | |
44 | ||
95954743 | 45 | int multi_process; |
bd99dc85 PA |
46 | int non_stop; |
47 | ||
ccd213ac | 48 | static char **program_argv, **wrapper_argv; |
2d717e4f | 49 | |
c74d0ad8 DJ |
50 | /* Enable miscellaneous debugging output. The name is historical - it |
51 | was originally used to debug LinuxThreads support. */ | |
52 | int debug_threads; | |
53 | ||
aa5ca48f DE |
54 | /* Enable debugging of h/w breakpoint/watchpoint support. */ |
55 | int debug_hw_points; | |
56 | ||
89be2091 DJ |
57 | int pass_signals[TARGET_SIGNAL_LAST]; |
58 | ||
c906108c | 59 | jmp_buf toplevel; |
c906108c | 60 | |
9b4b61c8 UW |
61 | const char *gdbserver_xmltarget; |
62 | ||
a9fa9f7d DJ |
63 | /* The PID of the originally created or attached inferior. Used to |
64 | send signals to the process when GDB sends us an asynchronous interrupt | |
65 | (user hitting Control-C in the client), and to wait for the child to exit | |
66 | when no longer debugging it. */ | |
67 | ||
a1928bad | 68 | unsigned long signal_pid; |
a9fa9f7d | 69 | |
290fadea RS |
70 | #ifdef SIGTTOU |
71 | /* A file descriptor for the controlling terminal. */ | |
72 | int terminal_fd; | |
73 | ||
74 | /* TERMINAL_FD's original foreground group. */ | |
75 | pid_t old_foreground_pgrp; | |
76 | ||
77 | /* Hand back terminal ownership to the original foreground group. */ | |
78 | ||
79 | static void | |
80 | restore_old_foreground_pgrp (void) | |
81 | { | |
82 | tcsetpgrp (terminal_fd, old_foreground_pgrp); | |
83 | } | |
84 | #endif | |
85 | ||
ec56be1b PA |
86 | /* Set if you want to disable optional thread related packets support |
87 | in gdbserver, for the sake of testing GDB against stubs that don't | |
88 | support them. */ | |
89 | int disable_packet_vCont; | |
90 | int disable_packet_Tthread; | |
91 | int disable_packet_qC; | |
92 | int disable_packet_qfThreadInfo; | |
93 | ||
5b1c542e PA |
94 | /* Last status reported to GDB. */ |
95 | static struct target_waitstatus last_status; | |
95954743 | 96 | static ptid_t last_ptid; |
5b1c542e | 97 | |
bd99dc85 PA |
98 | static char *own_buf; |
99 | static unsigned char *mem_buf; | |
100 | ||
101 | /* Structure holding information relative to a single stop reply. We | |
102 | keep a queue of these (really a singly-linked list) to push to GDB | |
103 | in non-stop mode. */ | |
104 | struct vstop_notif | |
105 | { | |
106 | /* Pointer to next in list. */ | |
107 | struct vstop_notif *next; | |
108 | ||
109 | /* Thread or process that got the event. */ | |
95954743 | 110 | ptid_t ptid; |
bd99dc85 PA |
111 | |
112 | /* Event info. */ | |
113 | struct target_waitstatus status; | |
114 | }; | |
115 | ||
116 | /* The pending stop replies list head. */ | |
117 | static struct vstop_notif *notif_queue = NULL; | |
118 | ||
119 | /* Put a stop reply to the stop reply queue. */ | |
120 | ||
121 | static void | |
95954743 | 122 | queue_stop_reply (ptid_t ptid, struct target_waitstatus *status) |
bd99dc85 PA |
123 | { |
124 | struct vstop_notif *new_notif; | |
125 | ||
126 | new_notif = malloc (sizeof (*new_notif)); | |
127 | new_notif->next = NULL; | |
128 | new_notif->ptid = ptid; | |
129 | new_notif->status = *status; | |
130 | ||
131 | if (notif_queue) | |
132 | { | |
133 | struct vstop_notif *tail; | |
134 | for (tail = notif_queue; | |
135 | tail && tail->next; | |
136 | tail = tail->next) | |
137 | ; | |
138 | tail->next = new_notif; | |
139 | } | |
140 | else | |
141 | notif_queue = new_notif; | |
142 | ||
143 | if (remote_debug) | |
144 | { | |
145 | int i = 0; | |
146 | struct vstop_notif *n; | |
147 | ||
148 | for (n = notif_queue; n; n = n->next) | |
149 | i++; | |
150 | ||
151 | fprintf (stderr, "pending stop replies: %d\n", i); | |
152 | } | |
153 | } | |
154 | ||
155 | /* Place an event in the stop reply queue, and push a notification if | |
156 | we aren't sending one yet. */ | |
157 | ||
158 | void | |
95954743 | 159 | push_event (ptid_t ptid, struct target_waitstatus *status) |
bd99dc85 | 160 | { |
d20a8ad9 PA |
161 | gdb_assert (status->kind != TARGET_WAITKIND_IGNORE); |
162 | ||
bd99dc85 PA |
163 | queue_stop_reply (ptid, status); |
164 | ||
165 | /* If this is the first stop reply in the queue, then inform GDB | |
166 | about it, by sending a Stop notification. */ | |
167 | if (notif_queue->next == NULL) | |
168 | { | |
169 | char *p = own_buf; | |
170 | strcpy (p, "Stop:"); | |
171 | p += strlen (p); | |
172 | prepare_resume_reply (p, | |
173 | notif_queue->ptid, ¬if_queue->status); | |
174 | putpkt_notif (own_buf); | |
175 | } | |
176 | } | |
177 | ||
95954743 PA |
178 | /* Get rid of the currently pending stop replies for PID. If PID is |
179 | -1, then apply to all processes. */ | |
bd99dc85 PA |
180 | |
181 | static void | |
95954743 | 182 | discard_queued_stop_replies (int pid) |
bd99dc85 | 183 | { |
95954743 | 184 | struct vstop_notif *prev = NULL, *reply, *next; |
bd99dc85 | 185 | |
95954743 | 186 | for (reply = notif_queue; reply; reply = next) |
bd99dc85 | 187 | { |
95954743 PA |
188 | next = reply->next; |
189 | ||
190 | if (pid == -1 | |
191 | || ptid_get_pid (reply->ptid) == pid) | |
192 | { | |
193 | if (reply == notif_queue) | |
194 | notif_queue = next; | |
195 | else | |
196 | prev->next = reply->next; | |
bd99dc85 | 197 | |
95954743 PA |
198 | free (reply); |
199 | } | |
200 | else | |
201 | prev = reply; | |
bd99dc85 PA |
202 | } |
203 | } | |
204 | ||
205 | /* If there are more stop replies to push, push one now. */ | |
206 | ||
207 | static void | |
208 | send_next_stop_reply (char *own_buf) | |
209 | { | |
210 | if (notif_queue) | |
211 | prepare_resume_reply (own_buf, | |
212 | notif_queue->ptid, | |
213 | ¬if_queue->status); | |
214 | else | |
215 | write_ok (own_buf); | |
216 | } | |
217 | ||
2d717e4f DJ |
218 | static int |
219 | target_running (void) | |
220 | { | |
221 | return all_threads.head != NULL; | |
222 | } | |
223 | ||
fc620387 | 224 | static int |
5b1c542e | 225 | start_inferior (char **argv) |
c906108c | 226 | { |
ccd213ac | 227 | char **new_argv = argv; |
2d717e4f | 228 | |
ccd213ac DJ |
229 | if (wrapper_argv != NULL) |
230 | { | |
231 | int i, count = 1; | |
232 | ||
233 | for (i = 0; wrapper_argv[i] != NULL; i++) | |
234 | count++; | |
235 | for (i = 0; argv[i] != NULL; i++) | |
236 | count++; | |
237 | new_argv = alloca (sizeof (char *) * count); | |
238 | count = 0; | |
239 | for (i = 0; wrapper_argv[i] != NULL; i++) | |
240 | new_argv[count++] = wrapper_argv[i]; | |
241 | for (i = 0; argv[i] != NULL; i++) | |
242 | new_argv[count++] = argv[i]; | |
243 | new_argv[count] = NULL; | |
244 | } | |
245 | ||
65730243 DE |
246 | if (debug_threads) |
247 | { | |
248 | int i; | |
249 | for (i = 0; new_argv[i]; ++i) | |
250 | fprintf (stderr, "new_argv[%d] = \"%s\"\n", i, new_argv[i]); | |
251 | fflush (stderr); | |
252 | } | |
253 | ||
b80864fb | 254 | #ifdef SIGTTOU |
a9fa9f7d DJ |
255 | signal (SIGTTOU, SIG_DFL); |
256 | signal (SIGTTIN, SIG_DFL); | |
b80864fb | 257 | #endif |
a9fa9f7d | 258 | |
ccd213ac | 259 | signal_pid = create_inferior (new_argv[0], new_argv); |
0d62e5e8 | 260 | |
c588c53c MS |
261 | /* FIXME: we don't actually know at this point that the create |
262 | actually succeeded. We won't know that until we wait. */ | |
a1928bad | 263 | fprintf (stderr, "Process %s created; pid = %ld\n", argv[0], |
a9fa9f7d | 264 | signal_pid); |
b80864fb | 265 | fflush (stderr); |
a9fa9f7d | 266 | |
b80864fb | 267 | #ifdef SIGTTOU |
a9fa9f7d DJ |
268 | signal (SIGTTOU, SIG_IGN); |
269 | signal (SIGTTIN, SIG_IGN); | |
290fadea RS |
270 | terminal_fd = fileno (stderr); |
271 | old_foreground_pgrp = tcgetpgrp (terminal_fd); | |
272 | tcsetpgrp (terminal_fd, signal_pid); | |
273 | atexit (restore_old_foreground_pgrp); | |
b80864fb | 274 | #endif |
c906108c | 275 | |
ccd213ac DJ |
276 | if (wrapper_argv != NULL) |
277 | { | |
278 | struct thread_resume resume_info; | |
95954743 | 279 | ptid_t ptid; |
ccd213ac | 280 | |
95954743 | 281 | resume_info.thread = pid_to_ptid (signal_pid); |
bd99dc85 | 282 | resume_info.kind = resume_continue; |
ccd213ac | 283 | resume_info.sig = 0; |
ccd213ac | 284 | |
95954743 | 285 | ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
bd99dc85 | 286 | |
5b1c542e PA |
287 | if (last_status.kind != TARGET_WAITKIND_STOPPED) |
288 | return signal_pid; | |
ccd213ac DJ |
289 | |
290 | do | |
291 | { | |
2bd7c093 | 292 | (*the_target->resume) (&resume_info, 1); |
ccd213ac | 293 | |
95954743 | 294 | mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
5b1c542e PA |
295 | if (last_status.kind != TARGET_WAITKIND_STOPPED) |
296 | return signal_pid; | |
d20a8ad9 PA |
297 | |
298 | current_inferior->last_resume_kind = resume_stop; | |
299 | current_inferior->last_status = last_status; | |
ccd213ac | 300 | } |
5b1c542e | 301 | while (last_status.value.sig != TARGET_SIGNAL_TRAP); |
ccd213ac | 302 | |
d20a8ad9 PA |
303 | current_inferior->last_resume_kind = resume_stop; |
304 | current_inferior->last_status = last_status; | |
5b1c542e | 305 | return signal_pid; |
ccd213ac DJ |
306 | } |
307 | ||
5b1c542e PA |
308 | /* Wait till we are at 1st instruction in program, return new pid |
309 | (assuming success). */ | |
95954743 | 310 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
5b1c542e | 311 | |
d20a8ad9 PA |
312 | if (last_status.kind != TARGET_WAITKIND_EXITED |
313 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
314 | { | |
315 | current_inferior->last_resume_kind = resume_stop; | |
316 | current_inferior->last_status = last_status; | |
317 | } | |
318 | ||
5b1c542e | 319 | return signal_pid; |
c906108c SS |
320 | } |
321 | ||
45b7b345 | 322 | static int |
5b1c542e | 323 | attach_inferior (int pid) |
45b7b345 DJ |
324 | { |
325 | /* myattach should return -1 if attaching is unsupported, | |
326 | 0 if it succeeded, and call error() otherwise. */ | |
a9fa9f7d | 327 | |
45b7b345 DJ |
328 | if (myattach (pid) != 0) |
329 | return -1; | |
330 | ||
6910d122 | 331 | fprintf (stderr, "Attached; pid = %d\n", pid); |
b80864fb | 332 | fflush (stderr); |
6910d122 | 333 | |
a9fa9f7d DJ |
334 | /* FIXME - It may be that we should get the SIGNAL_PID from the |
335 | attach function, so that it can be the main thread instead of | |
336 | whichever we were told to attach to. */ | |
337 | signal_pid = pid; | |
338 | ||
bd99dc85 PA |
339 | if (!non_stop) |
340 | { | |
95954743 | 341 | last_ptid = mywait (pid_to_ptid (pid), &last_status, 0, 0); |
bd99dc85 PA |
342 | |
343 | /* GDB knows to ignore the first SIGSTOP after attaching to a running | |
344 | process using the "attach" command, but this is different; it's | |
345 | just using "target remote". Pretend it's just starting up. */ | |
346 | if (last_status.kind == TARGET_WAITKIND_STOPPED | |
347 | && last_status.value.sig == TARGET_SIGNAL_STOP) | |
348 | last_status.value.sig = TARGET_SIGNAL_TRAP; | |
d20a8ad9 PA |
349 | |
350 | current_inferior->last_resume_kind = resume_stop; | |
351 | current_inferior->last_status = last_status; | |
bd99dc85 | 352 | } |
9db87ebd | 353 | |
45b7b345 DJ |
354 | return 0; |
355 | } | |
356 | ||
c906108c | 357 | extern int remote_debug; |
ce3a066d | 358 | |
0876f84a DJ |
359 | /* Decode a qXfer read request. Return 0 if everything looks OK, |
360 | or -1 otherwise. */ | |
361 | ||
362 | static int | |
363 | decode_xfer_read (char *buf, char **annex, CORE_ADDR *ofs, unsigned int *len) | |
364 | { | |
365 | /* Extract and NUL-terminate the annex. */ | |
366 | *annex = buf; | |
367 | while (*buf && *buf != ':') | |
368 | buf++; | |
369 | if (*buf == '\0') | |
370 | return -1; | |
371 | *buf++ = 0; | |
372 | ||
0e7f50da | 373 | /* After the read marker and annex, qXfer looks like a |
0876f84a DJ |
374 | traditional 'm' packet. */ |
375 | decode_m_packet (buf, ofs, len); | |
376 | ||
377 | return 0; | |
378 | } | |
379 | ||
380 | /* Write the response to a successful qXfer read. Returns the | |
381 | length of the (binary) data stored in BUF, corresponding | |
382 | to as much of DATA/LEN as we could fit. IS_MORE controls | |
383 | the first character of the response. */ | |
384 | static int | |
23181151 | 385 | write_qxfer_response (char *buf, const void *data, int len, int is_more) |
0876f84a DJ |
386 | { |
387 | int out_len; | |
388 | ||
389 | if (is_more) | |
390 | buf[0] = 'm'; | |
391 | else | |
392 | buf[0] = 'l'; | |
393 | ||
394 | return remote_escape_output (data, len, (unsigned char *) buf + 1, &out_len, | |
395 | PBUFSIZ - 2) + 1; | |
396 | } | |
397 | ||
89be2091 | 398 | /* Handle all of the extended 'Q' packets. */ |
ae1ada35 DE |
399 | |
400 | static void | |
89be2091 DJ |
401 | handle_general_set (char *own_buf) |
402 | { | |
403 | if (strncmp ("QPassSignals:", own_buf, strlen ("QPassSignals:")) == 0) | |
404 | { | |
405 | int numsigs = (int) TARGET_SIGNAL_LAST, i; | |
406 | const char *p = own_buf + strlen ("QPassSignals:"); | |
407 | CORE_ADDR cursig; | |
408 | ||
409 | p = decode_address_to_semicolon (&cursig, p); | |
410 | for (i = 0; i < numsigs; i++) | |
411 | { | |
412 | if (i == cursig) | |
413 | { | |
414 | pass_signals[i] = 1; | |
415 | if (*p == '\0') | |
416 | /* Keep looping, to clear the remaining signals. */ | |
417 | cursig = -1; | |
418 | else | |
419 | p = decode_address_to_semicolon (&cursig, p); | |
420 | } | |
421 | else | |
422 | pass_signals[i] = 0; | |
423 | } | |
424 | strcpy (own_buf, "OK"); | |
425 | return; | |
426 | } | |
427 | ||
a6f3e723 SL |
428 | if (strcmp (own_buf, "QStartNoAckMode") == 0) |
429 | { | |
430 | if (remote_debug) | |
431 | { | |
432 | fprintf (stderr, "[noack mode enabled]\n"); | |
433 | fflush (stderr); | |
434 | } | |
435 | ||
436 | noack_mode = 1; | |
437 | write_ok (own_buf); | |
438 | return; | |
439 | } | |
440 | ||
bd99dc85 PA |
441 | if (strncmp (own_buf, "QNonStop:", 9) == 0) |
442 | { | |
443 | char *mode = own_buf + 9; | |
444 | int req = -1; | |
445 | char *req_str; | |
446 | ||
447 | if (strcmp (mode, "0") == 0) | |
448 | req = 0; | |
449 | else if (strcmp (mode, "1") == 0) | |
450 | req = 1; | |
451 | else | |
452 | { | |
453 | /* We don't know what this mode is, so complain to | |
454 | GDB. */ | |
455 | fprintf (stderr, "Unknown non-stop mode requested: %s\n", | |
456 | own_buf); | |
457 | write_enn (own_buf); | |
458 | return; | |
459 | } | |
460 | ||
461 | req_str = req ? "non-stop" : "all-stop"; | |
462 | if (start_non_stop (req) != 0) | |
463 | { | |
464 | fprintf (stderr, "Setting %s mode failed\n", req_str); | |
465 | write_enn (own_buf); | |
466 | return; | |
467 | } | |
468 | ||
469 | non_stop = req; | |
470 | ||
471 | if (remote_debug) | |
472 | fprintf (stderr, "[%s mode enabled]\n", req_str); | |
473 | ||
474 | write_ok (own_buf); | |
475 | return; | |
476 | } | |
477 | ||
219f2f23 PA |
478 | if (target_supports_tracepoints () |
479 | && handle_tracepoint_general_set (own_buf)) | |
480 | return; | |
481 | ||
89be2091 DJ |
482 | /* Otherwise we didn't know what packet it was. Say we didn't |
483 | understand it. */ | |
484 | own_buf[0] = 0; | |
485 | } | |
486 | ||
23181151 | 487 | static const char * |
fb1e4ffc | 488 | get_features_xml (const char *annex) |
23181151 | 489 | { |
9b4b61c8 UW |
490 | /* gdbserver_xmltarget defines what to return when looking |
491 | for the "target.xml" file. Its contents can either be | |
492 | verbatim XML code (prefixed with a '@') or else the name | |
493 | of the actual XML file to be used in place of "target.xml". | |
fb1e4ffc | 494 | |
9b4b61c8 UW |
495 | This variable is set up from the auto-generated |
496 | init_registers_... routine for the current target. */ | |
fb1e4ffc | 497 | |
9b4b61c8 | 498 | if (gdbserver_xmltarget |
221c031f | 499 | && strcmp (annex, "target.xml") == 0) |
23181151 | 500 | { |
9b4b61c8 UW |
501 | if (*gdbserver_xmltarget == '@') |
502 | return gdbserver_xmltarget + 1; | |
23181151 | 503 | else |
9b4b61c8 | 504 | annex = gdbserver_xmltarget; |
23181151 DJ |
505 | } |
506 | ||
9b4b61c8 UW |
507 | #ifdef USE_XML |
508 | { | |
509 | extern const char *const xml_builtin[][2]; | |
510 | int i; | |
511 | ||
512 | /* Look for the annex. */ | |
513 | for (i = 0; xml_builtin[i][0] != NULL; i++) | |
514 | if (strcmp (annex, xml_builtin[i][0]) == 0) | |
515 | break; | |
516 | ||
517 | if (xml_builtin[i][0] != NULL) | |
518 | return xml_builtin[i][1]; | |
519 | } | |
520 | #endif | |
521 | ||
522 | return NULL; | |
23181151 DJ |
523 | } |
524 | ||
c74d0ad8 DJ |
525 | void |
526 | monitor_show_help (void) | |
527 | { | |
528 | monitor_output ("The following monitor commands are supported:\n"); | |
529 | monitor_output (" set debug <0|1>\n"); | |
1b3f6016 | 530 | monitor_output (" Enable general debugging messages\n"); |
aa5ca48f DE |
531 | monitor_output (" set debug-hw-points <0|1>\n"); |
532 | monitor_output (" Enable h/w breakpoint/watchpoint debugging messages\n"); | |
c74d0ad8 DJ |
533 | monitor_output (" set remote-debug <0|1>\n"); |
534 | monitor_output (" Enable remote protocol debugging messages\n"); | |
ecd7ecbc DJ |
535 | monitor_output (" exit\n"); |
536 | monitor_output (" Quit GDBserver\n"); | |
c74d0ad8 DJ |
537 | } |
538 | ||
219f2f23 PA |
539 | /* Read trace frame or inferior memory. */ |
540 | ||
541 | static int | |
90d74c30 | 542 | gdb_read_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) |
219f2f23 | 543 | { |
90d74c30 PA |
544 | int ret; |
545 | ||
219f2f23 PA |
546 | if (current_traceframe >= 0) |
547 | { | |
548 | ULONGEST nbytes; | |
549 | ULONGEST length = len; | |
550 | ||
551 | if (traceframe_read_mem (current_traceframe, | |
552 | memaddr, myaddr, len, &nbytes)) | |
553 | return EIO; | |
554 | /* Data read from trace buffer, we're done. */ | |
555 | if (nbytes == length) | |
556 | return 0; | |
557 | if (!in_readonly_region (memaddr, length)) | |
558 | return EIO; | |
559 | /* Otherwise we have a valid readonly case, fall through. */ | |
560 | /* (assume no half-trace half-real blocks for now) */ | |
561 | } | |
562 | ||
90d74c30 PA |
563 | ret = prepare_to_access_memory (); |
564 | if (ret == 0) | |
565 | { | |
566 | ret = read_inferior_memory (memaddr, myaddr, len); | |
567 | unprepare_to_access_memory (); | |
568 | } | |
569 | ||
570 | return ret; | |
219f2f23 PA |
571 | } |
572 | ||
573 | /* Write trace frame or inferior memory. Actually, writing to trace | |
574 | frames is forbidden. */ | |
575 | ||
576 | static int | |
90d74c30 | 577 | gdb_write_memory (CORE_ADDR memaddr, const unsigned char *myaddr, int len) |
219f2f23 PA |
578 | { |
579 | if (current_traceframe >= 0) | |
580 | return EIO; | |
581 | else | |
90d74c30 PA |
582 | { |
583 | int ret; | |
584 | ||
585 | ret = prepare_to_access_memory (); | |
586 | if (ret == 0) | |
587 | { | |
588 | ret = write_inferior_memory (memaddr, myaddr, len); | |
589 | unprepare_to_access_memory (); | |
590 | } | |
591 | return ret; | |
592 | } | |
219f2f23 PA |
593 | } |
594 | ||
08388c79 DE |
595 | /* Subroutine of handle_search_memory to simplify it. */ |
596 | ||
597 | static int | |
598 | handle_search_memory_1 (CORE_ADDR start_addr, CORE_ADDR search_space_len, | |
599 | gdb_byte *pattern, unsigned pattern_len, | |
600 | gdb_byte *search_buf, | |
601 | unsigned chunk_size, unsigned search_buf_size, | |
602 | CORE_ADDR *found_addrp) | |
603 | { | |
604 | /* Prime the search buffer. */ | |
605 | ||
90d74c30 | 606 | if (gdb_read_memory (start_addr, search_buf, search_buf_size) != 0) |
08388c79 | 607 | { |
5e1471f5 | 608 | warning ("Unable to access target memory at 0x%lx, halting search.", |
08388c79 DE |
609 | (long) start_addr); |
610 | return -1; | |
611 | } | |
612 | ||
613 | /* Perform the search. | |
614 | ||
615 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
616 | When we've scanned N bytes we copy the trailing bytes to the start and | |
617 | read in another N bytes. */ | |
618 | ||
619 | while (search_space_len >= pattern_len) | |
620 | { | |
621 | gdb_byte *found_ptr; | |
622 | unsigned nr_search_bytes = (search_space_len < search_buf_size | |
623 | ? search_space_len | |
624 | : search_buf_size); | |
625 | ||
626 | found_ptr = memmem (search_buf, nr_search_bytes, pattern, pattern_len); | |
627 | ||
628 | if (found_ptr != NULL) | |
629 | { | |
630 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
631 | *found_addrp = found_addr; | |
632 | return 1; | |
633 | } | |
634 | ||
635 | /* Not found in this chunk, skip to next chunk. */ | |
636 | ||
637 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
638 | if (search_space_len >= chunk_size) | |
639 | search_space_len -= chunk_size; | |
640 | else | |
641 | search_space_len = 0; | |
642 | ||
643 | if (search_space_len >= pattern_len) | |
644 | { | |
645 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 646 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
647 | int nr_to_read; |
648 | ||
649 | /* Copy the trailing part of the previous iteration to the front | |
650 | of the buffer for the next iteration. */ | |
651 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
652 | ||
653 | nr_to_read = (search_space_len - keep_len < chunk_size | |
654 | ? search_space_len - keep_len | |
655 | : chunk_size); | |
656 | ||
90d74c30 PA |
657 | if (gdb_read_memory (read_addr, search_buf + keep_len, |
658 | nr_to_read) != 0) | |
08388c79 | 659 | { |
5e1471f5 | 660 | warning ("Unable to access target memory at 0x%lx, halting search.", |
08388c79 DE |
661 | (long) read_addr); |
662 | return -1; | |
663 | } | |
664 | ||
665 | start_addr += chunk_size; | |
666 | } | |
667 | } | |
668 | ||
669 | /* Not found. */ | |
670 | ||
671 | return 0; | |
672 | } | |
673 | ||
674 | /* Handle qSearch:memory packets. */ | |
675 | ||
676 | static void | |
677 | handle_search_memory (char *own_buf, int packet_len) | |
678 | { | |
679 | CORE_ADDR start_addr; | |
680 | CORE_ADDR search_space_len; | |
681 | gdb_byte *pattern; | |
682 | unsigned int pattern_len; | |
683 | /* NOTE: also defined in find.c testcase. */ | |
684 | #define SEARCH_CHUNK_SIZE 16000 | |
685 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
686 | /* Buffer to hold memory contents for searching. */ | |
687 | gdb_byte *search_buf; | |
688 | unsigned search_buf_size; | |
689 | int found; | |
690 | CORE_ADDR found_addr; | |
691 | int cmd_name_len = sizeof ("qSearch:memory:") - 1; | |
692 | ||
aef93bd7 | 693 | pattern = malloc (packet_len); |
08388c79 DE |
694 | if (pattern == NULL) |
695 | { | |
5e1471f5 | 696 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
697 | strcpy (own_buf, "E00"); |
698 | return; | |
699 | } | |
700 | if (decode_search_memory_packet (own_buf + cmd_name_len, | |
701 | packet_len - cmd_name_len, | |
702 | &start_addr, &search_space_len, | |
703 | pattern, &pattern_len) < 0) | |
704 | { | |
705 | free (pattern); | |
5e1471f5 | 706 | error ("Error in parsing qSearch:memory packet"); |
08388c79 DE |
707 | strcpy (own_buf, "E00"); |
708 | return; | |
709 | } | |
710 | ||
711 | search_buf_size = chunk_size + pattern_len - 1; | |
712 | ||
713 | /* No point in trying to allocate a buffer larger than the search space. */ | |
714 | if (search_space_len < search_buf_size) | |
715 | search_buf_size = search_space_len; | |
716 | ||
aef93bd7 | 717 | search_buf = malloc (search_buf_size); |
08388c79 DE |
718 | if (search_buf == NULL) |
719 | { | |
720 | free (pattern); | |
5e1471f5 | 721 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
722 | strcpy (own_buf, "E00"); |
723 | return; | |
724 | } | |
725 | ||
726 | found = handle_search_memory_1 (start_addr, search_space_len, | |
727 | pattern, pattern_len, | |
728 | search_buf, chunk_size, search_buf_size, | |
729 | &found_addr); | |
730 | ||
731 | if (found > 0) | |
732 | sprintf (own_buf, "1,%lx", (long) found_addr); | |
733 | else if (found == 0) | |
734 | strcpy (own_buf, "0"); | |
735 | else | |
736 | strcpy (own_buf, "E00"); | |
737 | ||
738 | free (search_buf); | |
739 | free (pattern); | |
740 | } | |
741 | ||
2d717e4f DJ |
742 | #define require_running(BUF) \ |
743 | if (!target_running ()) \ | |
744 | { \ | |
745 | write_enn (BUF); \ | |
746 | return; \ | |
747 | } | |
748 | ||
cdbfd419 PP |
749 | /* Handle monitor commands not handled by target-specific handlers. */ |
750 | ||
751 | static void | |
752 | handle_monitor_command (char *mon) | |
753 | { | |
754 | if (strcmp (mon, "set debug 1") == 0) | |
755 | { | |
756 | debug_threads = 1; | |
757 | monitor_output ("Debug output enabled.\n"); | |
758 | } | |
759 | else if (strcmp (mon, "set debug 0") == 0) | |
760 | { | |
761 | debug_threads = 0; | |
762 | monitor_output ("Debug output disabled.\n"); | |
763 | } | |
764 | else if (strcmp (mon, "set debug-hw-points 1") == 0) | |
765 | { | |
766 | debug_hw_points = 1; | |
767 | monitor_output ("H/W point debugging output enabled.\n"); | |
768 | } | |
769 | else if (strcmp (mon, "set debug-hw-points 0") == 0) | |
770 | { | |
771 | debug_hw_points = 0; | |
772 | monitor_output ("H/W point debugging output disabled.\n"); | |
773 | } | |
774 | else if (strcmp (mon, "set remote-debug 1") == 0) | |
775 | { | |
776 | remote_debug = 1; | |
777 | monitor_output ("Protocol debug output enabled.\n"); | |
778 | } | |
779 | else if (strcmp (mon, "set remote-debug 0") == 0) | |
780 | { | |
781 | remote_debug = 0; | |
782 | monitor_output ("Protocol debug output disabled.\n"); | |
783 | } | |
784 | else if (strcmp (mon, "help") == 0) | |
785 | monitor_show_help (); | |
786 | else if (strcmp (mon, "exit") == 0) | |
787 | exit_requested = 1; | |
788 | else | |
789 | { | |
790 | monitor_output ("Unknown monitor command.\n\n"); | |
791 | monitor_show_help (); | |
792 | write_enn (own_buf); | |
793 | } | |
794 | } | |
795 | ||
dc146f7c VP |
796 | static void |
797 | handle_threads_qxfer_proper (struct buffer *buffer) | |
798 | { | |
799 | struct inferior_list_entry *thread; | |
800 | ||
801 | buffer_grow_str (buffer, "<threads>\n"); | |
802 | ||
803 | for (thread = all_threads.head; thread; thread = thread->next) | |
804 | { | |
805 | ptid_t ptid = thread_to_gdb_id ((struct thread_info *)thread); | |
806 | char ptid_s[100]; | |
807 | int core = -1; | |
808 | char core_s[21]; | |
809 | ||
810 | write_ptid (ptid_s, ptid); | |
811 | ||
812 | if (the_target->core_of_thread) | |
813 | core = (*the_target->core_of_thread) (ptid); | |
814 | ||
815 | if (core != -1) | |
816 | { | |
817 | sprintf (core_s, "%d", core); | |
818 | buffer_xml_printf (buffer, "<thread id=\"%s\" core=\"%s\"/>\n", | |
819 | ptid_s, core_s); | |
820 | } | |
821 | else | |
822 | { | |
823 | buffer_xml_printf (buffer, "<thread id=\"%s\"/>\n", | |
824 | ptid_s); | |
825 | } | |
826 | } | |
827 | ||
828 | buffer_grow_str0 (buffer, "</threads>\n"); | |
829 | } | |
830 | ||
831 | static int | |
832 | handle_threads_qxfer (const char *annex, | |
833 | unsigned char *readbuf, | |
834 | CORE_ADDR offset, int length) | |
835 | { | |
836 | static char *result = 0; | |
837 | static unsigned int result_length = 0; | |
838 | ||
839 | if (annex && strcmp (annex, "") != 0) | |
840 | return 0; | |
841 | ||
842 | if (offset == 0) | |
843 | { | |
844 | struct buffer buffer; | |
845 | /* When asked for data at offset 0, generate everything and store into | |
846 | 'result'. Successive reads will be served off 'result'. */ | |
847 | if (result) | |
848 | free (result); | |
849 | ||
850 | buffer_init (&buffer); | |
851 | ||
852 | handle_threads_qxfer_proper (&buffer); | |
853 | ||
854 | result = buffer_finish (&buffer); | |
855 | result_length = strlen (result); | |
856 | buffer_free (&buffer); | |
857 | } | |
858 | ||
859 | if (offset >= result_length) | |
860 | { | |
861 | /* We're out of data. */ | |
862 | free (result); | |
863 | result = NULL; | |
864 | result_length = 0; | |
865 | return 0; | |
866 | } | |
867 | ||
868 | if (length > result_length - offset) | |
869 | length = result_length - offset; | |
870 | ||
871 | memcpy (readbuf, result + offset, length); | |
872 | ||
873 | return length; | |
874 | ||
875 | } | |
876 | ||
30ba68cb MS |
877 | /* Table used by the crc32 function to calcuate the checksum. */ |
878 | ||
879 | static unsigned int crc32_table[256] = | |
880 | {0, 0}; | |
881 | ||
882 | /* Compute 32 bit CRC from inferior memory. | |
883 | ||
884 | On success, return 32 bit CRC. | |
885 | On failure, return (unsigned long long) -1. */ | |
886 | ||
887 | static unsigned long long | |
888 | crc32 (CORE_ADDR base, int len, unsigned int crc) | |
889 | { | |
890 | if (!crc32_table[1]) | |
891 | { | |
892 | /* Initialize the CRC table and the decoding table. */ | |
893 | int i, j; | |
894 | unsigned int c; | |
895 | ||
896 | for (i = 0; i < 256; i++) | |
897 | { | |
898 | for (c = i << 24, j = 8; j > 0; --j) | |
899 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
900 | crc32_table[i] = c; | |
901 | } | |
902 | } | |
903 | ||
904 | while (len--) | |
905 | { | |
906 | unsigned char byte = 0; | |
907 | ||
908 | /* Return failure if memory read fails. */ | |
909 | if (read_inferior_memory (base, &byte, 1) != 0) | |
910 | return (unsigned long long) -1; | |
911 | ||
912 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ byte) & 255]; | |
913 | base++; | |
914 | } | |
915 | return (unsigned long long) crc; | |
916 | } | |
917 | ||
ce3a066d DJ |
918 | /* Handle all of the extended 'q' packets. */ |
919 | void | |
0e7f50da | 920 | handle_query (char *own_buf, int packet_len, int *new_packet_len_p) |
ce3a066d | 921 | { |
0d62e5e8 DJ |
922 | static struct inferior_list_entry *thread_ptr; |
923 | ||
bb63802a | 924 | /* Reply the current thread id. */ |
db42f210 | 925 | if (strcmp ("qC", own_buf) == 0 && !disable_packet_qC) |
bb63802a | 926 | { |
95954743 | 927 | ptid_t gdb_id; |
2d717e4f | 928 | require_running (own_buf); |
bd99dc85 | 929 | |
95954743 PA |
930 | if (!ptid_equal (general_thread, null_ptid) |
931 | && !ptid_equal (general_thread, minus_one_ptid)) | |
bd99dc85 PA |
932 | gdb_id = general_thread; |
933 | else | |
934 | { | |
935 | thread_ptr = all_threads.head; | |
936 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
937 | } | |
938 | ||
95954743 PA |
939 | sprintf (own_buf, "QC"); |
940 | own_buf += 2; | |
941 | own_buf = write_ptid (own_buf, gdb_id); | |
bb63802a UW |
942 | return; |
943 | } | |
944 | ||
ce3a066d DJ |
945 | if (strcmp ("qSymbol::", own_buf) == 0) |
946 | { | |
d3bbe7a0 PA |
947 | /* GDB is suggesting new symbols have been loaded. This may |
948 | mean a new shared library has been detected as loaded, so | |
949 | take the opportunity to check if breakpoints we think are | |
950 | inserted, still are. Note that it isn't guaranteed that | |
951 | we'll see this when a shared library is loaded, and nor will | |
952 | we see this for unloads (although breakpoints in unloaded | |
953 | libraries shouldn't trigger), as GDB may not find symbols for | |
954 | the library at all. We also re-validate breakpoints when we | |
955 | see a second GDB breakpoint for the same address, and or when | |
956 | we access breakpoint shadows. */ | |
957 | validate_breakpoints (); | |
958 | ||
fa593d66 PA |
959 | if (target_supports_tracepoints ()) |
960 | tracepoint_look_up_symbols (); | |
961 | ||
2d717e4f | 962 | if (target_running () && the_target->look_up_symbols != NULL) |
2f2893d9 DJ |
963 | (*the_target->look_up_symbols) (); |
964 | ||
ce3a066d DJ |
965 | strcpy (own_buf, "OK"); |
966 | return; | |
967 | } | |
968 | ||
db42f210 | 969 | if (!disable_packet_qfThreadInfo) |
0d62e5e8 | 970 | { |
db42f210 | 971 | if (strcmp ("qfThreadInfo", own_buf) == 0) |
0d62e5e8 | 972 | { |
95954743 PA |
973 | ptid_t gdb_id; |
974 | ||
db42f210 PA |
975 | require_running (own_buf); |
976 | thread_ptr = all_threads.head; | |
95954743 PA |
977 | |
978 | *own_buf++ = 'm'; | |
979 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
980 | write_ptid (own_buf, gdb_id); | |
0d62e5e8 DJ |
981 | thread_ptr = thread_ptr->next; |
982 | return; | |
983 | } | |
db42f210 PA |
984 | |
985 | if (strcmp ("qsThreadInfo", own_buf) == 0) | |
0d62e5e8 | 986 | { |
95954743 PA |
987 | ptid_t gdb_id; |
988 | ||
db42f210 PA |
989 | require_running (own_buf); |
990 | if (thread_ptr != NULL) | |
991 | { | |
95954743 PA |
992 | *own_buf++ = 'm'; |
993 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
994 | write_ptid (own_buf, gdb_id); | |
db42f210 PA |
995 | thread_ptr = thread_ptr->next; |
996 | return; | |
997 | } | |
998 | else | |
999 | { | |
1000 | sprintf (own_buf, "l"); | |
1001 | return; | |
1002 | } | |
0d62e5e8 DJ |
1003 | } |
1004 | } | |
aa691b87 | 1005 | |
52fb6437 NS |
1006 | if (the_target->read_offsets != NULL |
1007 | && strcmp ("qOffsets", own_buf) == 0) | |
1008 | { | |
1009 | CORE_ADDR text, data; | |
2d717e4f DJ |
1010 | |
1011 | require_running (own_buf); | |
52fb6437 NS |
1012 | if (the_target->read_offsets (&text, &data)) |
1013 | sprintf (own_buf, "Text=%lX;Data=%lX;Bss=%lX", | |
1014 | (long)text, (long)data, (long)data); | |
1015 | else | |
1016 | write_enn (own_buf); | |
1b3f6016 | 1017 | |
52fb6437 NS |
1018 | return; |
1019 | } | |
1020 | ||
0e7f50da UW |
1021 | if (the_target->qxfer_spu != NULL |
1022 | && strncmp ("qXfer:spu:read:", own_buf, 15) == 0) | |
1023 | { | |
1024 | char *annex; | |
1025 | int n; | |
1026 | unsigned int len; | |
1027 | CORE_ADDR ofs; | |
1028 | unsigned char *spu_buf; | |
1029 | ||
2d717e4f | 1030 | require_running (own_buf); |
0e7f50da UW |
1031 | strcpy (own_buf, "E00"); |
1032 | if (decode_xfer_read (own_buf + 15, &annex, &ofs, &len) < 0) | |
78e5cee6 | 1033 | return; |
0e7f50da UW |
1034 | if (len > PBUFSIZ - 2) |
1035 | len = PBUFSIZ - 2; | |
aef93bd7 | 1036 | spu_buf = malloc (len + 1); |
0e7f50da | 1037 | if (!spu_buf) |
1b3f6016 | 1038 | return; |
0e7f50da UW |
1039 | |
1040 | n = (*the_target->qxfer_spu) (annex, spu_buf, NULL, ofs, len + 1); | |
1b3f6016 | 1041 | if (n < 0) |
0e7f50da UW |
1042 | write_enn (own_buf); |
1043 | else if (n > len) | |
78e5cee6 | 1044 | *new_packet_len_p = write_qxfer_response (own_buf, spu_buf, len, 1); |
1b3f6016 | 1045 | else |
78e5cee6 | 1046 | *new_packet_len_p = write_qxfer_response (own_buf, spu_buf, n, 0); |
0e7f50da UW |
1047 | |
1048 | free (spu_buf); | |
1049 | return; | |
1050 | } | |
1051 | ||
1052 | if (the_target->qxfer_spu != NULL | |
1053 | && strncmp ("qXfer:spu:write:", own_buf, 16) == 0) | |
1054 | { | |
1055 | char *annex; | |
1056 | int n; | |
1057 | unsigned int len; | |
1058 | CORE_ADDR ofs; | |
1059 | unsigned char *spu_buf; | |
1060 | ||
2d717e4f | 1061 | require_running (own_buf); |
0e7f50da | 1062 | strcpy (own_buf, "E00"); |
aef93bd7 | 1063 | spu_buf = malloc (packet_len - 15); |
0e7f50da | 1064 | if (!spu_buf) |
1b3f6016 | 1065 | return; |
0e7f50da UW |
1066 | if (decode_xfer_write (own_buf + 16, packet_len - 16, &annex, |
1067 | &ofs, &len, spu_buf) < 0) | |
1068 | { | |
1069 | free (spu_buf); | |
1070 | return; | |
1071 | } | |
1072 | ||
1b3f6016 | 1073 | n = (*the_target->qxfer_spu) |
0e7f50da UW |
1074 | (annex, NULL, (unsigned const char *)spu_buf, ofs, len); |
1075 | if (n < 0) | |
1076 | write_enn (own_buf); | |
1077 | else | |
1078 | sprintf (own_buf, "%x", n); | |
1079 | ||
1080 | free (spu_buf); | |
1081 | return; | |
1082 | } | |
1083 | ||
aa691b87 | 1084 | if (the_target->read_auxv != NULL |
0876f84a | 1085 | && strncmp ("qXfer:auxv:read:", own_buf, 16) == 0) |
aa691b87 | 1086 | { |
0876f84a DJ |
1087 | unsigned char *data; |
1088 | int n; | |
aa691b87 RM |
1089 | CORE_ADDR ofs; |
1090 | unsigned int len; | |
0876f84a DJ |
1091 | char *annex; |
1092 | ||
2d717e4f DJ |
1093 | require_running (own_buf); |
1094 | ||
0876f84a DJ |
1095 | /* Reject any annex; grab the offset and length. */ |
1096 | if (decode_xfer_read (own_buf + 16, &annex, &ofs, &len) < 0 | |
1097 | || annex[0] != '\0') | |
1098 | { | |
1099 | strcpy (own_buf, "E00"); | |
1100 | return; | |
1101 | } | |
1102 | ||
1103 | /* Read one extra byte, as an indicator of whether there is | |
1104 | more. */ | |
1105 | if (len > PBUFSIZ - 2) | |
1106 | len = PBUFSIZ - 2; | |
aef93bd7 DE |
1107 | data = malloc (len + 1); |
1108 | if (data == NULL) | |
1109 | { | |
1110 | write_enn (own_buf); | |
1111 | return; | |
1112 | } | |
0876f84a | 1113 | n = (*the_target->read_auxv) (ofs, data, len + 1); |
000ef4f0 DJ |
1114 | if (n < 0) |
1115 | write_enn (own_buf); | |
1116 | else if (n > len) | |
0876f84a | 1117 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); |
aa691b87 | 1118 | else |
0876f84a DJ |
1119 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); |
1120 | ||
1121 | free (data); | |
1122 | ||
aa691b87 RM |
1123 | return; |
1124 | } | |
1125 | ||
23181151 DJ |
1126 | if (strncmp ("qXfer:features:read:", own_buf, 20) == 0) |
1127 | { | |
1128 | CORE_ADDR ofs; | |
1129 | unsigned int len, total_len; | |
1130 | const char *document; | |
1131 | char *annex; | |
1132 | ||
2d717e4f DJ |
1133 | require_running (own_buf); |
1134 | ||
fb1e4ffc DJ |
1135 | /* Grab the annex, offset, and length. */ |
1136 | if (decode_xfer_read (own_buf + 20, &annex, &ofs, &len) < 0) | |
1137 | { | |
1138 | strcpy (own_buf, "E00"); | |
1139 | return; | |
1140 | } | |
1141 | ||
1142 | /* Now grab the correct annex. */ | |
1143 | document = get_features_xml (annex); | |
1144 | if (document == NULL) | |
23181151 DJ |
1145 | { |
1146 | strcpy (own_buf, "E00"); | |
1147 | return; | |
1148 | } | |
1149 | ||
1150 | total_len = strlen (document); | |
1151 | if (len > PBUFSIZ - 2) | |
1152 | len = PBUFSIZ - 2; | |
1153 | ||
1154 | if (ofs > total_len) | |
1155 | write_enn (own_buf); | |
1156 | else if (len < total_len - ofs) | |
1157 | *new_packet_len_p = write_qxfer_response (own_buf, document + ofs, | |
1158 | len, 1); | |
1159 | else | |
1160 | *new_packet_len_p = write_qxfer_response (own_buf, document + ofs, | |
1161 | total_len - ofs, 0); | |
1162 | ||
1163 | return; | |
1164 | } | |
1165 | ||
255e7678 DJ |
1166 | if (strncmp ("qXfer:libraries:read:", own_buf, 21) == 0) |
1167 | { | |
1168 | CORE_ADDR ofs; | |
1169 | unsigned int len, total_len; | |
1170 | char *document, *p; | |
1171 | struct inferior_list_entry *dll_ptr; | |
1172 | char *annex; | |
1173 | ||
2d717e4f DJ |
1174 | require_running (own_buf); |
1175 | ||
255e7678 DJ |
1176 | /* Reject any annex; grab the offset and length. */ |
1177 | if (decode_xfer_read (own_buf + 21, &annex, &ofs, &len) < 0 | |
1178 | || annex[0] != '\0') | |
1179 | { | |
1180 | strcpy (own_buf, "E00"); | |
1181 | return; | |
1182 | } | |
1183 | ||
1184 | /* Over-estimate the necessary memory. Assume that every character | |
1185 | in the library name must be escaped. */ | |
1186 | total_len = 64; | |
1187 | for (dll_ptr = all_dlls.head; dll_ptr != NULL; dll_ptr = dll_ptr->next) | |
1188 | total_len += 128 + 6 * strlen (((struct dll_info *) dll_ptr)->name); | |
1189 | ||
aef93bd7 DE |
1190 | document = malloc (total_len); |
1191 | if (document == NULL) | |
1192 | { | |
1193 | write_enn (own_buf); | |
1194 | return; | |
1195 | } | |
255e7678 DJ |
1196 | strcpy (document, "<library-list>\n"); |
1197 | p = document + strlen (document); | |
1198 | ||
1199 | for (dll_ptr = all_dlls.head; dll_ptr != NULL; dll_ptr = dll_ptr->next) | |
1200 | { | |
1201 | struct dll_info *dll = (struct dll_info *) dll_ptr; | |
1202 | char *name; | |
1203 | ||
1204 | strcpy (p, " <library name=\""); | |
1205 | p = p + strlen (p); | |
1206 | name = xml_escape_text (dll->name); | |
1207 | strcpy (p, name); | |
1208 | free (name); | |
1209 | p = p + strlen (p); | |
1210 | strcpy (p, "\"><segment address=\""); | |
1211 | p = p + strlen (p); | |
1212 | sprintf (p, "0x%lx", (long) dll->base_addr); | |
1213 | p = p + strlen (p); | |
1214 | strcpy (p, "\"/></library>\n"); | |
1215 | p = p + strlen (p); | |
1216 | } | |
1217 | ||
1218 | strcpy (p, "</library-list>\n"); | |
1219 | ||
1220 | total_len = strlen (document); | |
1221 | if (len > PBUFSIZ - 2) | |
1222 | len = PBUFSIZ - 2; | |
1223 | ||
1224 | if (ofs > total_len) | |
1225 | write_enn (own_buf); | |
1226 | else if (len < total_len - ofs) | |
1227 | *new_packet_len_p = write_qxfer_response (own_buf, document + ofs, | |
1228 | len, 1); | |
1229 | else | |
1230 | *new_packet_len_p = write_qxfer_response (own_buf, document + ofs, | |
1231 | total_len - ofs, 0); | |
1232 | ||
1233 | free (document); | |
1234 | return; | |
1235 | } | |
1236 | ||
07e059b5 VP |
1237 | if (the_target->qxfer_osdata != NULL |
1238 | && strncmp ("qXfer:osdata:read:", own_buf, 18) == 0) | |
1239 | { | |
1240 | char *annex; | |
1241 | int n; | |
1242 | unsigned int len; | |
1243 | CORE_ADDR ofs; | |
1244 | unsigned char *workbuf; | |
1245 | ||
1246 | strcpy (own_buf, "E00"); | |
1247 | if (decode_xfer_read (own_buf + 18, &annex, &ofs, &len) < 0) | |
78e5cee6 | 1248 | return; |
07e059b5 | 1249 | if (len > PBUFSIZ - 2) |
78e5cee6 | 1250 | len = PBUFSIZ - 2; |
aef93bd7 | 1251 | workbuf = malloc (len + 1); |
07e059b5 | 1252 | if (!workbuf) |
1b3f6016 | 1253 | return; |
07e059b5 VP |
1254 | |
1255 | n = (*the_target->qxfer_osdata) (annex, workbuf, NULL, ofs, len + 1); | |
1256 | if (n < 0) | |
78e5cee6 | 1257 | write_enn (own_buf); |
07e059b5 | 1258 | else if (n > len) |
78e5cee6 | 1259 | *new_packet_len_p = write_qxfer_response (own_buf, workbuf, len, 1); |
07e059b5 | 1260 | else |
78e5cee6 | 1261 | *new_packet_len_p = write_qxfer_response (own_buf, workbuf, n, 0); |
07e059b5 VP |
1262 | |
1263 | free (workbuf); | |
1264 | return; | |
1265 | } | |
1266 | ||
4aa995e1 PA |
1267 | if (the_target->qxfer_siginfo != NULL |
1268 | && strncmp ("qXfer:siginfo:read:", own_buf, 19) == 0) | |
1269 | { | |
1270 | unsigned char *data; | |
1271 | int n; | |
1272 | CORE_ADDR ofs; | |
1273 | unsigned int len; | |
1274 | char *annex; | |
1275 | ||
1276 | require_running (own_buf); | |
1277 | ||
1278 | /* Reject any annex; grab the offset and length. */ | |
1279 | if (decode_xfer_read (own_buf + 19, &annex, &ofs, &len) < 0 | |
1280 | || annex[0] != '\0') | |
1281 | { | |
1282 | strcpy (own_buf, "E00"); | |
1283 | return; | |
1284 | } | |
1285 | ||
1286 | /* Read one extra byte, as an indicator of whether there is | |
1287 | more. */ | |
1288 | if (len > PBUFSIZ - 2) | |
1289 | len = PBUFSIZ - 2; | |
1290 | data = malloc (len + 1); | |
1291 | if (!data) | |
1b3f6016 | 1292 | return; |
4aa995e1 PA |
1293 | n = (*the_target->qxfer_siginfo) (annex, data, NULL, ofs, len + 1); |
1294 | if (n < 0) | |
1295 | write_enn (own_buf); | |
1296 | else if (n > len) | |
1297 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); | |
1298 | else | |
1299 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); | |
1300 | ||
1301 | free (data); | |
1302 | return; | |
1303 | } | |
1304 | ||
1305 | if (the_target->qxfer_siginfo != NULL | |
1306 | && strncmp ("qXfer:siginfo:write:", own_buf, 20) == 0) | |
1307 | { | |
1308 | char *annex; | |
1309 | int n; | |
1310 | unsigned int len; | |
1311 | CORE_ADDR ofs; | |
1312 | unsigned char *data; | |
1313 | ||
1314 | require_running (own_buf); | |
1315 | ||
1316 | strcpy (own_buf, "E00"); | |
1317 | data = malloc (packet_len - 19); | |
1318 | if (!data) | |
1b3f6016 | 1319 | return; |
4aa995e1 PA |
1320 | if (decode_xfer_write (own_buf + 20, packet_len - 20, &annex, |
1321 | &ofs, &len, data) < 0) | |
1322 | { | |
1323 | free (data); | |
1324 | return; | |
1325 | } | |
1326 | ||
1327 | n = (*the_target->qxfer_siginfo) | |
1328 | (annex, NULL, (unsigned const char *)data, ofs, len); | |
1329 | if (n < 0) | |
1330 | write_enn (own_buf); | |
1331 | else | |
1332 | sprintf (own_buf, "%x", n); | |
1333 | ||
1334 | free (data); | |
1335 | return; | |
1336 | } | |
1337 | ||
dc146f7c VP |
1338 | if (strncmp ("qXfer:threads:read:", own_buf, 19) == 0) |
1339 | { | |
1340 | unsigned char *data; | |
1341 | int n; | |
1342 | CORE_ADDR ofs; | |
1343 | unsigned int len; | |
1344 | char *annex; | |
1345 | ||
1346 | require_running (own_buf); | |
1347 | ||
1348 | /* Reject any annex; grab the offset and length. */ | |
1349 | if (decode_xfer_read (own_buf + 19, &annex, &ofs, &len) < 0 | |
1350 | || annex[0] != '\0') | |
1351 | { | |
1352 | strcpy (own_buf, "E00"); | |
1353 | return; | |
1354 | } | |
1355 | ||
1356 | /* Read one extra byte, as an indicator of whether there is | |
1357 | more. */ | |
1358 | if (len > PBUFSIZ - 2) | |
1359 | len = PBUFSIZ - 2; | |
1360 | data = malloc (len + 1); | |
1361 | if (!data) | |
1362 | return; | |
1363 | n = handle_threads_qxfer (annex, data, ofs, len + 1); | |
1364 | if (n < 0) | |
1365 | write_enn (own_buf); | |
1366 | else if (n > len) | |
1367 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); | |
1368 | else | |
1369 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); | |
1370 | ||
1371 | free (data); | |
1372 | return; | |
1373 | } | |
1374 | ||
0fb4aa4b PA |
1375 | if (strncmp ("qXfer:statictrace:read:", own_buf, |
1376 | sizeof ("qXfer:statictrace:read:") -1) == 0) | |
1377 | { | |
1378 | unsigned char *data; | |
1379 | CORE_ADDR ofs; | |
1380 | unsigned int len; | |
1381 | char *annex; | |
1382 | ULONGEST nbytes; | |
1383 | ||
1384 | require_running (own_buf); | |
1385 | ||
1386 | if (current_traceframe == -1) | |
1387 | { | |
1388 | write_enn (own_buf); | |
1389 | return; | |
1390 | } | |
1391 | ||
1392 | /* Reject any annex; grab the offset and length. */ | |
1393 | if (decode_xfer_read (own_buf + sizeof ("qXfer:statictrace:read:") -1, | |
1394 | &annex, &ofs, &len) < 0 | |
1395 | || annex[0] != '\0') | |
1396 | { | |
1397 | strcpy (own_buf, "E00"); | |
1398 | return; | |
1399 | } | |
1400 | ||
1401 | /* Read one extra byte, as an indicator of whether there is | |
1402 | more. */ | |
1403 | if (len > PBUFSIZ - 2) | |
1404 | len = PBUFSIZ - 2; | |
1405 | data = malloc (len + 1); | |
1406 | if (!data) | |
1407 | return; | |
1408 | ||
1409 | if (traceframe_read_sdata (current_traceframe, ofs, | |
1410 | data, len + 1, &nbytes)) | |
1411 | write_enn (own_buf); | |
1412 | else if (nbytes > len) | |
1413 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); | |
1414 | else | |
1415 | *new_packet_len_p = write_qxfer_response (own_buf, data, nbytes, 0); | |
1416 | ||
1417 | free (data); | |
1418 | return; | |
1419 | } | |
1420 | ||
be2a5f71 DJ |
1421 | /* Protocol features query. */ |
1422 | if (strncmp ("qSupported", own_buf, 10) == 0 | |
1423 | && (own_buf[10] == ':' || own_buf[10] == '\0')) | |
1424 | { | |
95954743 | 1425 | char *p = &own_buf[10]; |
fa593d66 | 1426 | int gdb_supports_qRelocInsn = 0; |
95954743 | 1427 | |
1570b33e L |
1428 | /* Start processing qSupported packet. */ |
1429 | target_process_qsupported (NULL); | |
1430 | ||
95954743 PA |
1431 | /* Process each feature being provided by GDB. The first |
1432 | feature will follow a ':', and latter features will follow | |
1433 | ';'. */ | |
1434 | if (*p == ':') | |
d149dd1d PA |
1435 | { |
1436 | char **qsupported = NULL; | |
1437 | int count = 0; | |
1438 | int i; | |
1439 | ||
1440 | /* Two passes, to avoid nested strtok calls in | |
1441 | target_process_qsupported. */ | |
1442 | for (p = strtok (p + 1, ";"); | |
1443 | p != NULL; | |
1444 | p = strtok (NULL, ";")) | |
1445 | { | |
1446 | count++; | |
1447 | qsupported = xrealloc (qsupported, count * sizeof (char *)); | |
1448 | qsupported[count - 1] = xstrdup (p); | |
1449 | } | |
1450 | ||
1451 | for (i = 0; i < count; i++) | |
1452 | { | |
1453 | p = qsupported[i]; | |
1454 | if (strcmp (p, "multiprocess+") == 0) | |
1455 | { | |
1456 | /* GDB supports and wants multi-process support if | |
1457 | possible. */ | |
1458 | if (target_supports_multi_process ()) | |
1459 | multi_process = 1; | |
1460 | } | |
fa593d66 PA |
1461 | else if (strcmp (p, "qRelocInsn+") == 0) |
1462 | { | |
1463 | /* GDB supports relocate instruction requests. */ | |
1464 | gdb_supports_qRelocInsn = 1; | |
1465 | } | |
d149dd1d PA |
1466 | else |
1467 | target_process_qsupported (p); | |
1468 | ||
1469 | free (p); | |
1470 | } | |
1471 | ||
1472 | free (qsupported); | |
1473 | } | |
95954743 | 1474 | |
89be2091 | 1475 | sprintf (own_buf, "PacketSize=%x;QPassSignals+", PBUFSIZ - 1); |
0876f84a | 1476 | |
255e7678 DJ |
1477 | /* We do not have any hook to indicate whether the target backend |
1478 | supports qXfer:libraries:read, so always report it. */ | |
1479 | strcat (own_buf, ";qXfer:libraries:read+"); | |
1480 | ||
0876f84a | 1481 | if (the_target->read_auxv != NULL) |
9f2e1e63 | 1482 | strcat (own_buf, ";qXfer:auxv:read+"); |
2d717e4f | 1483 | |
0e7f50da UW |
1484 | if (the_target->qxfer_spu != NULL) |
1485 | strcat (own_buf, ";qXfer:spu:read+;qXfer:spu:write+"); | |
0876f84a | 1486 | |
4aa995e1 PA |
1487 | if (the_target->qxfer_siginfo != NULL) |
1488 | strcat (own_buf, ";qXfer:siginfo:read+;qXfer:siginfo:write+"); | |
1489 | ||
221c031f UW |
1490 | /* We always report qXfer:features:read, as targets may |
1491 | install XML files on a subsequent call to arch_setup. | |
1492 | If we reported to GDB on startup that we don't support | |
1493 | qXfer:feature:read at all, we will never be re-queried. */ | |
1494 | strcat (own_buf, ";qXfer:features:read+"); | |
23181151 | 1495 | |
a6f3e723 SL |
1496 | if (transport_is_reliable) |
1497 | strcat (own_buf, ";QStartNoAckMode+"); | |
07e059b5 VP |
1498 | |
1499 | if (the_target->qxfer_osdata != NULL) | |
1b3f6016 | 1500 | strcat (own_buf, ";qXfer:osdata:read+"); |
07e059b5 | 1501 | |
cf8fd78b PA |
1502 | if (target_supports_multi_process ()) |
1503 | strcat (own_buf, ";multiprocess+"); | |
95954743 | 1504 | |
bd99dc85 PA |
1505 | if (target_supports_non_stop ()) |
1506 | strcat (own_buf, ";QNonStop+"); | |
1507 | ||
dc146f7c VP |
1508 | strcat (own_buf, ";qXfer:threads:read+"); |
1509 | ||
219f2f23 PA |
1510 | if (target_supports_tracepoints ()) |
1511 | { | |
1512 | strcat (own_buf, ";ConditionalTracepoints+"); | |
1513 | strcat (own_buf, ";TraceStateVariables+"); | |
1514 | strcat (own_buf, ";TracepointSource+"); | |
8336d594 | 1515 | strcat (own_buf, ";DisconnectedTracing+"); |
fa593d66 PA |
1516 | if (gdb_supports_qRelocInsn && target_supports_fast_tracepoints ()) |
1517 | strcat (own_buf, ";FastTracepoints+"); | |
0fb4aa4b PA |
1518 | strcat (own_buf, ";StaticTracepoints+"); |
1519 | strcat (own_buf, ";qXfer:statictrace:read+"); | |
219f2f23 PA |
1520 | } |
1521 | ||
be2a5f71 DJ |
1522 | return; |
1523 | } | |
1524 | ||
dae5f5cf DJ |
1525 | /* Thread-local storage support. */ |
1526 | if (the_target->get_tls_address != NULL | |
1527 | && strncmp ("qGetTLSAddr:", own_buf, 12) == 0) | |
1528 | { | |
1529 | char *p = own_buf + 12; | |
5b1c542e | 1530 | CORE_ADDR parts[2], address = 0; |
dae5f5cf | 1531 | int i, err; |
95954743 | 1532 | ptid_t ptid = null_ptid; |
dae5f5cf | 1533 | |
2d717e4f DJ |
1534 | require_running (own_buf); |
1535 | ||
dae5f5cf DJ |
1536 | for (i = 0; i < 3; i++) |
1537 | { | |
1538 | char *p2; | |
1539 | int len; | |
1540 | ||
1541 | if (p == NULL) | |
1542 | break; | |
1543 | ||
1544 | p2 = strchr (p, ','); | |
1545 | if (p2) | |
1546 | { | |
1547 | len = p2 - p; | |
1548 | p2++; | |
1549 | } | |
1550 | else | |
1551 | { | |
1552 | len = strlen (p); | |
1553 | p2 = NULL; | |
1554 | } | |
1555 | ||
5b1c542e | 1556 | if (i == 0) |
95954743 | 1557 | ptid = read_ptid (p, NULL); |
5b1c542e PA |
1558 | else |
1559 | decode_address (&parts[i - 1], p, len); | |
dae5f5cf DJ |
1560 | p = p2; |
1561 | } | |
1562 | ||
1563 | if (p != NULL || i < 3) | |
1564 | err = 1; | |
1565 | else | |
1566 | { | |
e09875d4 | 1567 | struct thread_info *thread = find_thread_ptid (ptid); |
dae5f5cf DJ |
1568 | |
1569 | if (thread == NULL) | |
1570 | err = 2; | |
1571 | else | |
5b1c542e | 1572 | err = the_target->get_tls_address (thread, parts[0], parts[1], |
dae5f5cf DJ |
1573 | &address); |
1574 | } | |
1575 | ||
1576 | if (err == 0) | |
1577 | { | |
c6f46ca0 | 1578 | strcpy (own_buf, paddress(address)); |
dae5f5cf DJ |
1579 | return; |
1580 | } | |
1581 | else if (err > 0) | |
1582 | { | |
1583 | write_enn (own_buf); | |
1584 | return; | |
1585 | } | |
1586 | ||
1587 | /* Otherwise, pretend we do not understand this packet. */ | |
1588 | } | |
1589 | ||
711e434b PM |
1590 | /* Windows OS Thread Information Block address support. */ |
1591 | if (the_target->get_tib_address != NULL | |
1592 | && strncmp ("qGetTIBAddr:", own_buf, 12) == 0) | |
1593 | { | |
1594 | char *annex; | |
1595 | int n; | |
1596 | CORE_ADDR tlb; | |
1597 | ptid_t ptid = read_ptid (own_buf + 12, &annex); | |
1598 | ||
1599 | n = (*the_target->get_tib_address) (ptid, &tlb); | |
1600 | if (n == 1) | |
1601 | { | |
c6f46ca0 | 1602 | strcpy (own_buf, paddress(tlb)); |
711e434b PM |
1603 | return; |
1604 | } | |
1605 | else if (n == 0) | |
1606 | { | |
1607 | write_enn (own_buf); | |
1608 | return; | |
1609 | } | |
1610 | return; | |
1611 | } | |
1612 | ||
c74d0ad8 DJ |
1613 | /* Handle "monitor" commands. */ |
1614 | if (strncmp ("qRcmd,", own_buf, 6) == 0) | |
1615 | { | |
aef93bd7 | 1616 | char *mon = malloc (PBUFSIZ); |
c74d0ad8 DJ |
1617 | int len = strlen (own_buf + 6); |
1618 | ||
aef93bd7 DE |
1619 | if (mon == NULL) |
1620 | { | |
1621 | write_enn (own_buf); | |
1622 | return; | |
1623 | } | |
1624 | ||
d41b6bb4 | 1625 | if ((len % 2) != 0 || unhexify (mon, own_buf + 6, len / 2) != len / 2) |
c74d0ad8 DJ |
1626 | { |
1627 | write_enn (own_buf); | |
1628 | free (mon); | |
1629 | return; | |
1630 | } | |
1631 | mon[len / 2] = '\0'; | |
1632 | ||
1633 | write_ok (own_buf); | |
1634 | ||
cdbfd419 PP |
1635 | if (the_target->handle_monitor_command == NULL |
1636 | || (*the_target->handle_monitor_command) (mon) == 0) | |
1637 | /* Default processing. */ | |
1638 | handle_monitor_command (mon); | |
c74d0ad8 DJ |
1639 | |
1640 | free (mon); | |
1641 | return; | |
1642 | } | |
1643 | ||
08388c79 DE |
1644 | if (strncmp ("qSearch:memory:", own_buf, sizeof ("qSearch:memory:") - 1) == 0) |
1645 | { | |
1646 | require_running (own_buf); | |
1647 | handle_search_memory (own_buf, packet_len); | |
1648 | return; | |
1649 | } | |
1650 | ||
95954743 PA |
1651 | if (strcmp (own_buf, "qAttached") == 0 |
1652 | || strncmp (own_buf, "qAttached:", sizeof ("qAttached:") - 1) == 0) | |
0b16c5cf | 1653 | { |
95954743 PA |
1654 | struct process_info *process; |
1655 | ||
1656 | if (own_buf[sizeof ("qAttached") - 1]) | |
1657 | { | |
1658 | int pid = strtoul (own_buf + sizeof ("qAttached:") - 1, NULL, 16); | |
1659 | process = (struct process_info *) | |
1660 | find_inferior_id (&all_processes, pid_to_ptid (pid)); | |
1661 | } | |
1662 | else | |
1663 | { | |
1664 | require_running (own_buf); | |
1665 | process = current_process (); | |
1666 | } | |
1667 | ||
1668 | if (process == NULL) | |
1669 | { | |
1670 | write_enn (own_buf); | |
1671 | return; | |
1672 | } | |
1673 | ||
1674 | strcpy (own_buf, process->attached ? "1" : "0"); | |
0b16c5cf PA |
1675 | return; |
1676 | } | |
1677 | ||
30ba68cb MS |
1678 | if (strncmp ("qCRC:", own_buf, 5) == 0) |
1679 | { | |
1680 | /* CRC check (compare-section). */ | |
1681 | char *comma; | |
1682 | CORE_ADDR base; | |
1683 | int len; | |
1684 | unsigned long long crc; | |
1685 | ||
1686 | require_running (own_buf); | |
2280c721 | 1687 | base = strtoul (own_buf + 5, &comma, 16); |
30ba68cb MS |
1688 | if (*comma++ != ',') |
1689 | { | |
1690 | write_enn (own_buf); | |
1691 | return; | |
1692 | } | |
1693 | len = strtoul (comma, NULL, 16); | |
1694 | crc = crc32 (base, len, 0xffffffff); | |
1695 | /* Check for memory failure. */ | |
1696 | if (crc == (unsigned long long) -1) | |
1697 | { | |
1698 | write_enn (own_buf); | |
1699 | return; | |
1700 | } | |
1701 | sprintf (own_buf, "C%lx", (unsigned long) crc); | |
1702 | return; | |
1703 | } | |
1704 | ||
219f2f23 PA |
1705 | if (target_supports_tracepoints () && handle_tracepoint_query (own_buf)) |
1706 | return; | |
1707 | ||
ce3a066d DJ |
1708 | /* Otherwise we didn't know what packet it was. Say we didn't |
1709 | understand it. */ | |
1710 | own_buf[0] = 0; | |
1711 | } | |
1712 | ||
ce1a5b52 PA |
1713 | static void gdb_wants_all_threads_stopped (void); |
1714 | ||
64386c31 DJ |
1715 | /* Parse vCont packets. */ |
1716 | void | |
5b1c542e | 1717 | handle_v_cont (char *own_buf) |
64386c31 DJ |
1718 | { |
1719 | char *p, *q; | |
1720 | int n = 0, i = 0; | |
2bd7c093 | 1721 | struct thread_resume *resume_info; |
95954743 | 1722 | struct thread_resume default_action = {{0}}; |
64386c31 DJ |
1723 | |
1724 | /* Count the number of semicolons in the packet. There should be one | |
1725 | for every action. */ | |
1726 | p = &own_buf[5]; | |
1727 | while (p) | |
1728 | { | |
1729 | n++; | |
1730 | p++; | |
1731 | p = strchr (p, ';'); | |
1732 | } | |
2bd7c093 PA |
1733 | |
1734 | resume_info = malloc (n * sizeof (resume_info[0])); | |
aef93bd7 DE |
1735 | if (resume_info == NULL) |
1736 | goto err; | |
64386c31 | 1737 | |
64386c31 | 1738 | p = &own_buf[5]; |
64386c31 DJ |
1739 | while (*p) |
1740 | { | |
1741 | p++; | |
1742 | ||
64386c31 | 1743 | if (p[0] == 's' || p[0] == 'S') |
bd99dc85 | 1744 | resume_info[i].kind = resume_step; |
64386c31 | 1745 | else if (p[0] == 'c' || p[0] == 'C') |
bd99dc85 PA |
1746 | resume_info[i].kind = resume_continue; |
1747 | else if (p[0] == 't') | |
1748 | resume_info[i].kind = resume_stop; | |
64386c31 DJ |
1749 | else |
1750 | goto err; | |
1751 | ||
1752 | if (p[0] == 'S' || p[0] == 'C') | |
1753 | { | |
1754 | int sig; | |
1755 | sig = strtol (p + 1, &q, 16); | |
1756 | if (p == q) | |
1757 | goto err; | |
1758 | p = q; | |
1759 | ||
1760 | if (!target_signal_to_host_p (sig)) | |
1761 | goto err; | |
1762 | resume_info[i].sig = target_signal_to_host (sig); | |
1763 | } | |
1764 | else | |
1765 | { | |
1766 | resume_info[i].sig = 0; | |
1767 | p = p + 1; | |
1768 | } | |
1769 | ||
1770 | if (p[0] == 0) | |
1771 | { | |
95954743 | 1772 | resume_info[i].thread = minus_one_ptid; |
64386c31 DJ |
1773 | default_action = resume_info[i]; |
1774 | ||
1775 | /* Note: we don't increment i here, we'll overwrite this entry | |
1776 | the next time through. */ | |
1777 | } | |
1778 | else if (p[0] == ':') | |
1779 | { | |
95954743 | 1780 | ptid_t ptid = read_ptid (p + 1, &q); |
a06660f7 | 1781 | |
64386c31 DJ |
1782 | if (p == q) |
1783 | goto err; | |
1784 | p = q; | |
1785 | if (p[0] != ';' && p[0] != 0) | |
1786 | goto err; | |
1787 | ||
95954743 | 1788 | resume_info[i].thread = ptid; |
a06660f7 | 1789 | |
64386c31 DJ |
1790 | i++; |
1791 | } | |
1792 | } | |
1793 | ||
2bd7c093 PA |
1794 | if (i < n) |
1795 | resume_info[i] = default_action; | |
64386c31 DJ |
1796 | |
1797 | /* Still used in occasional places in the backend. */ | |
bd99dc85 | 1798 | if (n == 1 |
95954743 | 1799 | && !ptid_equal (resume_info[0].thread, minus_one_ptid) |
bd99dc85 | 1800 | && resume_info[0].kind != resume_stop) |
64386c31 DJ |
1801 | cont_thread = resume_info[0].thread; |
1802 | else | |
95954743 | 1803 | cont_thread = minus_one_ptid; |
dc3f8883 | 1804 | set_desired_inferior (0); |
64386c31 | 1805 | |
bd99dc85 PA |
1806 | if (!non_stop) |
1807 | enable_async_io (); | |
1808 | ||
2bd7c093 | 1809 | (*the_target->resume) (resume_info, n); |
64386c31 DJ |
1810 | |
1811 | free (resume_info); | |
1812 | ||
bd99dc85 PA |
1813 | if (non_stop) |
1814 | write_ok (own_buf); | |
1815 | else | |
1816 | { | |
95954743 | 1817 | last_ptid = mywait (minus_one_ptid, &last_status, 0, 1); |
ce1a5b52 | 1818 | |
d20a8ad9 PA |
1819 | if (last_status.kind != TARGET_WAITKIND_EXITED |
1820 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
1821 | current_inferior->last_status = last_status; | |
1822 | ||
ce1a5b52 PA |
1823 | /* From the client's perspective, all-stop mode always stops all |
1824 | threads implicitly (and the target backend has already done | |
1825 | so by now). Tag all threads as "want-stopped", so we don't | |
1826 | resume them implicitly without the client telling us to. */ | |
1827 | gdb_wants_all_threads_stopped (); | |
bd99dc85 PA |
1828 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
1829 | disable_async_io (); | |
6bd31874 JB |
1830 | |
1831 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
1832 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
1833 | mourn_inferior (find_process_pid (ptid_get_pid (last_ptid))); | |
bd99dc85 | 1834 | } |
64386c31 DJ |
1835 | return; |
1836 | ||
1837 | err: | |
255e7678 | 1838 | write_enn (own_buf); |
64386c31 DJ |
1839 | free (resume_info); |
1840 | return; | |
1841 | } | |
1842 | ||
2d717e4f DJ |
1843 | /* Attach to a new program. Return 1 if successful, 0 if failure. */ |
1844 | int | |
5b1c542e | 1845 | handle_v_attach (char *own_buf) |
2d717e4f DJ |
1846 | { |
1847 | int pid; | |
1848 | ||
1849 | pid = strtol (own_buf + 8, NULL, 16); | |
5b1c542e | 1850 | if (pid != 0 && attach_inferior (pid) == 0) |
2d717e4f | 1851 | { |
aeba519e PA |
1852 | /* Don't report shared library events after attaching, even if |
1853 | some libraries are preloaded. GDB will always poll the | |
1854 | library list. Avoids the "stopped by shared library event" | |
1855 | notice on the GDB side. */ | |
1856 | dlls_changed = 0; | |
bd99dc85 PA |
1857 | |
1858 | if (non_stop) | |
1859 | { | |
1860 | /* In non-stop, we don't send a resume reply. Stop events | |
1861 | will follow up using the normal notification | |
1862 | mechanism. */ | |
1863 | write_ok (own_buf); | |
1864 | } | |
1865 | else | |
1866 | prepare_resume_reply (own_buf, last_ptid, &last_status); | |
1867 | ||
2d717e4f DJ |
1868 | return 1; |
1869 | } | |
1870 | else | |
1871 | { | |
1872 | write_enn (own_buf); | |
1873 | return 0; | |
1874 | } | |
1875 | } | |
1876 | ||
1877 | /* Run a new program. Return 1 if successful, 0 if failure. */ | |
1878 | static int | |
5b1c542e | 1879 | handle_v_run (char *own_buf) |
2d717e4f | 1880 | { |
aef93bd7 | 1881 | char *p, *next_p, **new_argv; |
2d717e4f DJ |
1882 | int i, new_argc; |
1883 | ||
1884 | new_argc = 0; | |
1885 | for (p = own_buf + strlen ("vRun;"); p && *p; p = strchr (p, ';')) | |
1886 | { | |
1887 | p++; | |
1888 | new_argc++; | |
1889 | } | |
1890 | ||
aef93bd7 DE |
1891 | new_argv = calloc (new_argc + 2, sizeof (char *)); |
1892 | if (new_argv == NULL) | |
1893 | { | |
1894 | write_enn (own_buf); | |
1895 | return 0; | |
1896 | } | |
1897 | ||
2d717e4f DJ |
1898 | i = 0; |
1899 | for (p = own_buf + strlen ("vRun;"); *p; p = next_p) | |
1900 | { | |
1901 | next_p = strchr (p, ';'); | |
1902 | if (next_p == NULL) | |
1903 | next_p = p + strlen (p); | |
1904 | ||
1905 | if (i == 0 && p == next_p) | |
1906 | new_argv[i] = NULL; | |
1907 | else | |
1908 | { | |
aef93bd7 | 1909 | /* FIXME: Fail request if out of memory instead of dying. */ |
bca929d3 | 1910 | new_argv[i] = xmalloc (1 + (next_p - p) / 2); |
2d717e4f DJ |
1911 | unhexify (new_argv[i], p, (next_p - p) / 2); |
1912 | new_argv[i][(next_p - p) / 2] = '\0'; | |
1913 | } | |
1914 | ||
1915 | if (*next_p) | |
1916 | next_p++; | |
1917 | i++; | |
1918 | } | |
1919 | new_argv[i] = NULL; | |
1920 | ||
1921 | if (new_argv[0] == NULL) | |
1922 | { | |
f142445f DJ |
1923 | /* GDB didn't specify a program to run. Use the program from the |
1924 | last run with the new argument list. */ | |
9b710a42 | 1925 | |
2d717e4f DJ |
1926 | if (program_argv == NULL) |
1927 | { | |
aef93bd7 | 1928 | /* FIXME: new_argv memory leak */ |
2d717e4f DJ |
1929 | write_enn (own_buf); |
1930 | return 0; | |
1931 | } | |
1932 | ||
aef93bd7 DE |
1933 | new_argv[0] = strdup (program_argv[0]); |
1934 | if (new_argv[0] == NULL) | |
1935 | { | |
1936 | /* FIXME: new_argv memory leak */ | |
1937 | write_enn (own_buf); | |
1938 | return 0; | |
1b3f6016 | 1939 | } |
2d717e4f | 1940 | } |
f142445f | 1941 | |
aef93bd7 DE |
1942 | /* Free the old argv and install the new one. */ |
1943 | freeargv (program_argv); | |
f142445f | 1944 | program_argv = new_argv; |
2d717e4f | 1945 | |
5b1c542e PA |
1946 | start_inferior (program_argv); |
1947 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
2d717e4f | 1948 | { |
5b1c542e | 1949 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
bd99dc85 PA |
1950 | |
1951 | /* In non-stop, sending a resume reply doesn't set the general | |
1952 | thread, but GDB assumes a vRun sets it (this is so GDB can | |
1953 | query which is the main thread of the new inferior. */ | |
1954 | if (non_stop) | |
1955 | general_thread = last_ptid; | |
1956 | ||
2d717e4f DJ |
1957 | return 1; |
1958 | } | |
1959 | else | |
1960 | { | |
1961 | write_enn (own_buf); | |
1962 | return 0; | |
1963 | } | |
1964 | } | |
1965 | ||
95954743 PA |
1966 | /* Kill process. Return 1 if successful, 0 if failure. */ |
1967 | int | |
1968 | handle_v_kill (char *own_buf) | |
1969 | { | |
1970 | int pid; | |
1971 | char *p = &own_buf[6]; | |
0f54c268 PM |
1972 | if (multi_process) |
1973 | pid = strtol (p, NULL, 16); | |
1974 | else | |
1975 | pid = signal_pid; | |
95954743 PA |
1976 | if (pid != 0 && kill_inferior (pid) == 0) |
1977 | { | |
1978 | last_status.kind = TARGET_WAITKIND_SIGNALLED; | |
1979 | last_status.value.sig = TARGET_SIGNAL_KILL; | |
1980 | last_ptid = pid_to_ptid (pid); | |
1981 | discard_queued_stop_replies (pid); | |
1982 | write_ok (own_buf); | |
1983 | return 1; | |
1984 | } | |
1985 | else | |
1986 | { | |
1987 | write_enn (own_buf); | |
1988 | return 0; | |
1989 | } | |
1990 | } | |
1991 | ||
bd99dc85 PA |
1992 | /* Handle a 'vStopped' packet. */ |
1993 | static void | |
1994 | handle_v_stopped (char *own_buf) | |
1995 | { | |
1996 | /* If we're waiting for GDB to acknowledge a pending stop reply, | |
1997 | consider that done. */ | |
1998 | if (notif_queue) | |
1999 | { | |
2000 | struct vstop_notif *head; | |
2001 | ||
2002 | if (remote_debug) | |
95954743 PA |
2003 | fprintf (stderr, "vStopped: acking %s\n", |
2004 | target_pid_to_str (notif_queue->ptid)); | |
bd99dc85 PA |
2005 | |
2006 | head = notif_queue; | |
2007 | notif_queue = notif_queue->next; | |
2008 | free (head); | |
2009 | } | |
2010 | ||
2011 | /* Push another stop reply, or if there are no more left, an OK. */ | |
2012 | send_next_stop_reply (own_buf); | |
2013 | } | |
2014 | ||
64386c31 DJ |
2015 | /* Handle all of the extended 'v' packets. */ |
2016 | void | |
5b1c542e | 2017 | handle_v_requests (char *own_buf, int packet_len, int *new_packet_len) |
64386c31 | 2018 | { |
db42f210 | 2019 | if (!disable_packet_vCont) |
64386c31 | 2020 | { |
db42f210 PA |
2021 | if (strncmp (own_buf, "vCont;", 6) == 0) |
2022 | { | |
2023 | require_running (own_buf); | |
5b1c542e | 2024 | handle_v_cont (own_buf); |
db42f210 PA |
2025 | return; |
2026 | } | |
64386c31 | 2027 | |
db42f210 PA |
2028 | if (strncmp (own_buf, "vCont?", 6) == 0) |
2029 | { | |
bd99dc85 | 2030 | strcpy (own_buf, "vCont;c;C;s;S;t"); |
db42f210 PA |
2031 | return; |
2032 | } | |
64386c31 DJ |
2033 | } |
2034 | ||
a6b151f1 DJ |
2035 | if (strncmp (own_buf, "vFile:", 6) == 0 |
2036 | && handle_vFile (own_buf, packet_len, new_packet_len)) | |
2037 | return; | |
2038 | ||
2d717e4f DJ |
2039 | if (strncmp (own_buf, "vAttach;", 8) == 0) |
2040 | { | |
95954743 | 2041 | if (!multi_process && target_running ()) |
2d717e4f | 2042 | { |
fd96d250 PA |
2043 | fprintf (stderr, "Already debugging a process\n"); |
2044 | write_enn (own_buf); | |
2045 | return; | |
2d717e4f | 2046 | } |
5b1c542e | 2047 | handle_v_attach (own_buf); |
2d717e4f DJ |
2048 | return; |
2049 | } | |
2050 | ||
2051 | if (strncmp (own_buf, "vRun;", 5) == 0) | |
2052 | { | |
95954743 | 2053 | if (!multi_process && target_running ()) |
2d717e4f | 2054 | { |
fd96d250 PA |
2055 | fprintf (stderr, "Already debugging a process\n"); |
2056 | write_enn (own_buf); | |
2057 | return; | |
2d717e4f | 2058 | } |
5b1c542e | 2059 | handle_v_run (own_buf); |
2d717e4f DJ |
2060 | return; |
2061 | } | |
2062 | ||
95954743 PA |
2063 | if (strncmp (own_buf, "vKill;", 6) == 0) |
2064 | { | |
2065 | if (!target_running ()) | |
2066 | { | |
2067 | fprintf (stderr, "No process to kill\n"); | |
2068 | write_enn (own_buf); | |
2069 | return; | |
2070 | } | |
2071 | handle_v_kill (own_buf); | |
2072 | return; | |
2073 | } | |
2074 | ||
bd99dc85 PA |
2075 | if (strncmp (own_buf, "vStopped", 8) == 0) |
2076 | { | |
2077 | handle_v_stopped (own_buf); | |
2078 | return; | |
2079 | } | |
2080 | ||
64386c31 DJ |
2081 | /* Otherwise we didn't know what packet it was. Say we didn't |
2082 | understand it. */ | |
2083 | own_buf[0] = 0; | |
2084 | return; | |
2085 | } | |
2086 | ||
bd99dc85 PA |
2087 | /* Resume inferior and wait for another event. In non-stop mode, |
2088 | don't really wait here, but return immediatelly to the event | |
2089 | loop. */ | |
1fd7cdc2 | 2090 | static void |
5b1c542e | 2091 | myresume (char *own_buf, int step, int sig) |
64386c31 DJ |
2092 | { |
2093 | struct thread_resume resume_info[2]; | |
2094 | int n = 0; | |
2bd7c093 | 2095 | int valid_cont_thread; |
a20d5e98 DJ |
2096 | |
2097 | set_desired_inferior (0); | |
64386c31 | 2098 | |
95954743 PA |
2099 | valid_cont_thread = (!ptid_equal (cont_thread, null_ptid) |
2100 | && !ptid_equal (cont_thread, minus_one_ptid)); | |
2bd7c093 PA |
2101 | |
2102 | if (step || sig || valid_cont_thread) | |
64386c31 DJ |
2103 | { |
2104 | resume_info[0].thread | |
2105 | = ((struct inferior_list_entry *) current_inferior)->id; | |
bd99dc85 PA |
2106 | if (step) |
2107 | resume_info[0].kind = resume_step; | |
2108 | else | |
2109 | resume_info[0].kind = resume_continue; | |
64386c31 | 2110 | resume_info[0].sig = sig; |
64386c31 DJ |
2111 | n++; |
2112 | } | |
2bd7c093 PA |
2113 | |
2114 | if (!valid_cont_thread) | |
2115 | { | |
95954743 | 2116 | resume_info[n].thread = minus_one_ptid; |
bd99dc85 | 2117 | resume_info[n].kind = resume_continue; |
2bd7c093 PA |
2118 | resume_info[n].sig = 0; |
2119 | n++; | |
2120 | } | |
64386c31 | 2121 | |
bd99dc85 PA |
2122 | if (!non_stop) |
2123 | enable_async_io (); | |
2124 | ||
2bd7c093 | 2125 | (*the_target->resume) (resume_info, n); |
bd99dc85 PA |
2126 | |
2127 | if (non_stop) | |
2128 | write_ok (own_buf); | |
2129 | else | |
2130 | { | |
95954743 | 2131 | last_ptid = mywait (minus_one_ptid, &last_status, 0, 1); |
d20a8ad9 PA |
2132 | |
2133 | if (last_status.kind != TARGET_WAITKIND_EXITED | |
2134 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
2135 | { | |
2136 | current_inferior->last_resume_kind = resume_stop; | |
2137 | current_inferior->last_status = last_status; | |
2138 | } | |
2139 | ||
bd99dc85 PA |
2140 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
2141 | disable_async_io (); | |
6bd31874 JB |
2142 | |
2143 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
2144 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2145 | mourn_inferior (find_process_pid (ptid_get_pid (last_ptid))); | |
bd99dc85 PA |
2146 | } |
2147 | } | |
2148 | ||
2149 | /* Callback for for_each_inferior. Make a new stop reply for each | |
2150 | stopped thread. */ | |
2151 | ||
95954743 PA |
2152 | static int |
2153 | queue_stop_reply_callback (struct inferior_list_entry *entry, void *arg) | |
bd99dc85 | 2154 | { |
8336d594 | 2155 | struct thread_info *thread = (struct thread_info *) entry; |
bd99dc85 | 2156 | |
8336d594 PA |
2157 | /* For now, assume targets that don't have this callback also don't |
2158 | manage the thread's last_status field. */ | |
2159 | if (the_target->thread_stopped == NULL) | |
95954743 PA |
2160 | { |
2161 | struct target_waitstatus status; | |
2162 | ||
2163 | status.kind = TARGET_WAITKIND_STOPPED; | |
2164 | status.value.sig = TARGET_SIGNAL_TRAP; | |
bd99dc85 | 2165 | |
8336d594 PA |
2166 | /* Pass the last stop reply back to GDB, but don't notify |
2167 | yet. */ | |
2168 | queue_stop_reply (entry->id, &thread->last_status); | |
2169 | } | |
2170 | else | |
2171 | { | |
2172 | if (thread_stopped (thread)) | |
2173 | { | |
2174 | if (debug_threads) | |
2175 | fprintf (stderr, "Reporting thread %s as already stopped with %s\n", | |
2176 | target_pid_to_str (entry->id), | |
2177 | target_waitstatus_to_string (&thread->last_status)); | |
2178 | ||
d20a8ad9 PA |
2179 | gdb_assert (thread->last_status.kind != TARGET_WAITKIND_IGNORE); |
2180 | ||
8336d594 PA |
2181 | /* Pass the last stop reply back to GDB, but don't notify |
2182 | yet. */ | |
2183 | queue_stop_reply (entry->id, &thread->last_status); | |
2184 | } | |
95954743 PA |
2185 | } |
2186 | ||
2187 | return 0; | |
64386c31 DJ |
2188 | } |
2189 | ||
ce1a5b52 PA |
2190 | /* Set this inferior threads's state as "want-stopped". We won't |
2191 | resume this thread until the client gives us another action for | |
2192 | it. */ | |
8336d594 PA |
2193 | |
2194 | static void | |
2195 | gdb_wants_thread_stopped (struct inferior_list_entry *entry) | |
2196 | { | |
2197 | struct thread_info *thread = (struct thread_info *) entry; | |
2198 | ||
2199 | thread->last_resume_kind = resume_stop; | |
2200 | ||
2201 | if (thread->last_status.kind == TARGET_WAITKIND_IGNORE) | |
2202 | { | |
ce1a5b52 PA |
2203 | /* Most threads are stopped implicitly (all-stop); tag that with |
2204 | signal 0. */ | |
8336d594 PA |
2205 | thread->last_status.kind = TARGET_WAITKIND_STOPPED; |
2206 | thread->last_status.value.sig = TARGET_SIGNAL_0; | |
2207 | } | |
2208 | } | |
2209 | ||
2210 | /* Set all threads' states as "want-stopped". */ | |
2211 | ||
2212 | static void | |
2213 | gdb_wants_all_threads_stopped (void) | |
2214 | { | |
2215 | for_each_inferior (&all_threads, gdb_wants_thread_stopped); | |
2216 | } | |
2217 | ||
2218 | /* Clear the gdb_detached flag of every process. */ | |
2219 | ||
2220 | static void | |
2221 | gdb_reattached_process (struct inferior_list_entry *entry) | |
2222 | { | |
2223 | struct process_info *process = (struct process_info *) entry; | |
2224 | ||
2225 | process->gdb_detached = 0; | |
2226 | } | |
2227 | ||
5b1c542e PA |
2228 | /* Status handler for the '?' packet. */ |
2229 | ||
2230 | static void | |
2231 | handle_status (char *own_buf) | |
2232 | { | |
8336d594 PA |
2233 | /* GDB is connected, don't forward events to the target anymore. */ |
2234 | for_each_inferior (&all_processes, gdb_reattached_process); | |
bd99dc85 PA |
2235 | |
2236 | /* In non-stop mode, we must send a stop reply for each stopped | |
2237 | thread. In all-stop mode, just send one for the first stopped | |
2238 | thread we find. */ | |
2239 | ||
2240 | if (non_stop) | |
2241 | { | |
8336d594 PA |
2242 | discard_queued_stop_replies (-1); |
2243 | find_inferior (&all_threads, queue_stop_reply_callback, NULL); | |
bd99dc85 PA |
2244 | |
2245 | /* The first is sent immediatly. OK is sent if there is no | |
2246 | stopped thread, which is the same handling of the vStopped | |
2247 | packet (by design). */ | |
2248 | send_next_stop_reply (own_buf); | |
2249 | } | |
5b1c542e | 2250 | else |
bd99dc85 | 2251 | { |
7984d532 | 2252 | pause_all (0); |
fa593d66 | 2253 | stabilize_threads (); |
8336d594 PA |
2254 | gdb_wants_all_threads_stopped (); |
2255 | ||
bd99dc85 | 2256 | if (all_threads.head) |
8336d594 PA |
2257 | { |
2258 | struct target_waitstatus status; | |
2259 | ||
2260 | status.kind = TARGET_WAITKIND_STOPPED; | |
2261 | status.value.sig = TARGET_SIGNAL_TRAP; | |
2262 | prepare_resume_reply (own_buf, | |
2263 | all_threads.head->id, &status); | |
2264 | } | |
bd99dc85 PA |
2265 | else |
2266 | strcpy (own_buf, "W00"); | |
2267 | } | |
5b1c542e PA |
2268 | } |
2269 | ||
dd24457d DJ |
2270 | static void |
2271 | gdbserver_version (void) | |
2272 | { | |
c16158bc | 2273 | printf ("GNU gdbserver %s%s\n" |
6e7ffa39 | 2274 | "Copyright (C) 2010 Free Software Foundation, Inc.\n" |
dd24457d DJ |
2275 | "gdbserver is free software, covered by the GNU General Public License.\n" |
2276 | "This gdbserver was configured as \"%s\"\n", | |
c16158bc | 2277 | PKGVERSION, version, host_name); |
dd24457d DJ |
2278 | } |
2279 | ||
0bc68c49 | 2280 | static void |
c16158bc | 2281 | gdbserver_usage (FILE *stream) |
0bc68c49 | 2282 | { |
c16158bc JM |
2283 | fprintf (stream, "Usage:\tgdbserver [OPTIONS] COMM PROG [ARGS ...]\n" |
2284 | "\tgdbserver [OPTIONS] --attach COMM PID\n" | |
2285 | "\tgdbserver [OPTIONS] --multi COMM\n" | |
2286 | "\n" | |
2287 | "COMM may either be a tty device (for serial debugging), or \n" | |
2288 | "HOST:PORT to listen for a TCP connection.\n" | |
2289 | "\n" | |
2290 | "Options:\n" | |
62709adf PA |
2291 | " --debug Enable general debugging output.\n" |
2292 | " --remote-debug Enable remote protocol debugging output.\n" | |
2293 | " --version Display version information and exit.\n" | |
2294 | " --wrapper WRAPPER -- Run WRAPPER to start new programs.\n"); | |
c16158bc JM |
2295 | if (REPORT_BUGS_TO[0] && stream == stdout) |
2296 | fprintf (stream, "Report bugs to \"%s\".\n", REPORT_BUGS_TO); | |
0bc68c49 DJ |
2297 | } |
2298 | ||
db42f210 PA |
2299 | static void |
2300 | gdbserver_show_disableable (FILE *stream) | |
2301 | { | |
2302 | fprintf (stream, "Disableable packets:\n" | |
2303 | " vCont \tAll vCont packets\n" | |
2304 | " qC \tQuerying the current thread\n" | |
2305 | " qfThreadInfo\tThread listing\n" | |
2306 | " Tthread \tPassing the thread specifier in the T stop reply packet\n" | |
2307 | " threads \tAll of the above\n"); | |
2308 | } | |
2309 | ||
2310 | ||
2d717e4f DJ |
2311 | #undef require_running |
2312 | #define require_running(BUF) \ | |
2313 | if (!target_running ()) \ | |
2314 | { \ | |
2315 | write_enn (BUF); \ | |
2316 | break; \ | |
2317 | } | |
2318 | ||
95954743 PA |
2319 | static int |
2320 | first_thread_of (struct inferior_list_entry *entry, void *args) | |
2321 | { | |
2322 | int pid = * (int *) args; | |
2323 | ||
2324 | if (ptid_get_pid (entry->id) == pid) | |
2325 | return 1; | |
2326 | ||
2327 | return 0; | |
2328 | } | |
2329 | ||
2330 | static void | |
2331 | kill_inferior_callback (struct inferior_list_entry *entry) | |
2332 | { | |
2333 | struct process_info *process = (struct process_info *) entry; | |
2334 | int pid = ptid_get_pid (process->head.id); | |
2335 | ||
2336 | kill_inferior (pid); | |
2337 | discard_queued_stop_replies (pid); | |
2338 | } | |
2339 | ||
9f767825 DE |
2340 | /* Callback for for_each_inferior to detach or kill the inferior, |
2341 | depending on whether we attached to it or not. | |
2342 | We inform the user whether we're detaching or killing the process | |
2343 | as this is only called when gdbserver is about to exit. */ | |
2344 | ||
95954743 PA |
2345 | static void |
2346 | detach_or_kill_inferior_callback (struct inferior_list_entry *entry) | |
2347 | { | |
2348 | struct process_info *process = (struct process_info *) entry; | |
2349 | int pid = ptid_get_pid (process->head.id); | |
2350 | ||
2351 | if (process->attached) | |
2352 | detach_inferior (pid); | |
2353 | else | |
2354 | kill_inferior (pid); | |
2355 | ||
2356 | discard_queued_stop_replies (pid); | |
2357 | } | |
2358 | ||
9f767825 DE |
2359 | /* for_each_inferior callback for detach_or_kill_for_exit to print |
2360 | the pids of started inferiors. */ | |
2361 | ||
2362 | static void | |
2363 | print_started_pid (struct inferior_list_entry *entry) | |
2364 | { | |
2365 | struct process_info *process = (struct process_info *) entry; | |
2366 | ||
2367 | if (! process->attached) | |
2368 | { | |
2369 | int pid = ptid_get_pid (process->head.id); | |
2370 | fprintf (stderr, " %d", pid); | |
2371 | } | |
2372 | } | |
2373 | ||
2374 | /* for_each_inferior callback for detach_or_kill_for_exit to print | |
2375 | the pids of attached inferiors. */ | |
2376 | ||
2377 | static void | |
2378 | print_attached_pid (struct inferior_list_entry *entry) | |
2379 | { | |
2380 | struct process_info *process = (struct process_info *) entry; | |
2381 | ||
2382 | if (process->attached) | |
2383 | { | |
2384 | int pid = ptid_get_pid (process->head.id); | |
2385 | fprintf (stderr, " %d", pid); | |
2386 | } | |
2387 | } | |
2388 | ||
2389 | /* Call this when exiting gdbserver with possible inferiors that need | |
2390 | to be killed or detached from. */ | |
2391 | ||
2392 | static void | |
2393 | detach_or_kill_for_exit (void) | |
2394 | { | |
2395 | /* First print a list of the inferiors we will be killing/detaching. | |
2396 | This is to assist the user, for example, in case the inferior unexpectedly | |
2397 | dies after we exit: did we screw up or did the inferior exit on its own? | |
2398 | Having this info will save some head-scratching. */ | |
2399 | ||
2400 | if (have_started_inferiors_p ()) | |
2401 | { | |
2402 | fprintf (stderr, "Killing process(es):"); | |
2403 | for_each_inferior (&all_processes, print_started_pid); | |
2404 | fprintf (stderr, "\n"); | |
2405 | } | |
2406 | if (have_attached_inferiors_p ()) | |
2407 | { | |
2408 | fprintf (stderr, "Detaching process(es):"); | |
2409 | for_each_inferior (&all_processes, print_attached_pid); | |
2410 | fprintf (stderr, "\n"); | |
2411 | } | |
2412 | ||
2413 | /* Now we can kill or detach the inferiors. */ | |
2414 | ||
2415 | for_each_inferior (&all_processes, detach_or_kill_inferior_callback); | |
2416 | } | |
2417 | ||
95954743 PA |
2418 | static void |
2419 | join_inferiors_callback (struct inferior_list_entry *entry) | |
2420 | { | |
2421 | struct process_info *process = (struct process_info *) entry; | |
2422 | ||
2423 | /* If we are attached, then we can exit. Otherwise, we need to hang | |
2424 | around doing nothing, until the child is gone. */ | |
2425 | if (!process->attached) | |
2426 | join_inferior (ptid_get_pid (process->head.id)); | |
2427 | } | |
2428 | ||
c906108c | 2429 | int |
da85418c | 2430 | main (int argc, char *argv[]) |
c906108c | 2431 | { |
0729219d DJ |
2432 | int bad_attach; |
2433 | int pid; | |
2d717e4f DJ |
2434 | char *arg_end, *port; |
2435 | char **next_arg = &argv[1]; | |
2436 | int multi_mode = 0; | |
2437 | int attach = 0; | |
2438 | int was_running; | |
c906108c | 2439 | |
2d717e4f | 2440 | while (*next_arg != NULL && **next_arg == '-') |
dd24457d | 2441 | { |
2d717e4f DJ |
2442 | if (strcmp (*next_arg, "--version") == 0) |
2443 | { | |
2444 | gdbserver_version (); | |
2445 | exit (0); | |
2446 | } | |
2447 | else if (strcmp (*next_arg, "--help") == 0) | |
2448 | { | |
c16158bc | 2449 | gdbserver_usage (stdout); |
2d717e4f DJ |
2450 | exit (0); |
2451 | } | |
2452 | else if (strcmp (*next_arg, "--attach") == 0) | |
2453 | attach = 1; | |
2454 | else if (strcmp (*next_arg, "--multi") == 0) | |
2455 | multi_mode = 1; | |
ccd213ac DJ |
2456 | else if (strcmp (*next_arg, "--wrapper") == 0) |
2457 | { | |
2458 | next_arg++; | |
2459 | ||
2460 | wrapper_argv = next_arg; | |
2461 | while (*next_arg != NULL && strcmp (*next_arg, "--") != 0) | |
2462 | next_arg++; | |
2463 | ||
2464 | if (next_arg == wrapper_argv || *next_arg == NULL) | |
2465 | { | |
c16158bc | 2466 | gdbserver_usage (stderr); |
ccd213ac DJ |
2467 | exit (1); |
2468 | } | |
2469 | ||
2470 | /* Consume the "--". */ | |
2471 | *next_arg = NULL; | |
2472 | } | |
2d717e4f DJ |
2473 | else if (strcmp (*next_arg, "--debug") == 0) |
2474 | debug_threads = 1; | |
62709adf PA |
2475 | else if (strcmp (*next_arg, "--remote-debug") == 0) |
2476 | remote_debug = 1; | |
db42f210 PA |
2477 | else if (strcmp (*next_arg, "--disable-packet") == 0) |
2478 | { | |
2479 | gdbserver_show_disableable (stdout); | |
2480 | exit (0); | |
2481 | } | |
2482 | else if (strncmp (*next_arg, | |
2483 | "--disable-packet=", | |
2484 | sizeof ("--disable-packet=") - 1) == 0) | |
2485 | { | |
2486 | char *packets, *tok; | |
2487 | ||
2488 | packets = *next_arg += sizeof ("--disable-packet=") - 1; | |
2489 | for (tok = strtok (packets, ","); | |
2490 | tok != NULL; | |
2491 | tok = strtok (NULL, ",")) | |
2492 | { | |
2493 | if (strcmp ("vCont", tok) == 0) | |
2494 | disable_packet_vCont = 1; | |
2495 | else if (strcmp ("Tthread", tok) == 0) | |
2496 | disable_packet_Tthread = 1; | |
2497 | else if (strcmp ("qC", tok) == 0) | |
2498 | disable_packet_qC = 1; | |
2499 | else if (strcmp ("qfThreadInfo", tok) == 0) | |
2500 | disable_packet_qfThreadInfo = 1; | |
2501 | else if (strcmp ("threads", tok) == 0) | |
2502 | { | |
2503 | disable_packet_vCont = 1; | |
2504 | disable_packet_Tthread = 1; | |
2505 | disable_packet_qC = 1; | |
2506 | disable_packet_qfThreadInfo = 1; | |
2507 | } | |
2508 | else | |
2509 | { | |
2510 | fprintf (stderr, "Don't know how to disable \"%s\".\n\n", | |
2511 | tok); | |
2512 | gdbserver_show_disableable (stderr); | |
2513 | exit (1); | |
2514 | } | |
2515 | } | |
2516 | } | |
2d717e4f DJ |
2517 | else |
2518 | { | |
2519 | fprintf (stderr, "Unknown argument: %s\n", *next_arg); | |
2520 | exit (1); | |
2521 | } | |
dd24457d | 2522 | |
2d717e4f DJ |
2523 | next_arg++; |
2524 | continue; | |
dd24457d DJ |
2525 | } |
2526 | ||
c5aa993b | 2527 | if (setjmp (toplevel)) |
c906108c | 2528 | { |
c5aa993b JM |
2529 | fprintf (stderr, "Exiting\n"); |
2530 | exit (1); | |
c906108c SS |
2531 | } |
2532 | ||
2d717e4f DJ |
2533 | port = *next_arg; |
2534 | next_arg++; | |
2535 | if (port == NULL || (!attach && !multi_mode && *next_arg == NULL)) | |
2536 | { | |
c16158bc | 2537 | gdbserver_usage (stderr); |
2d717e4f DJ |
2538 | exit (1); |
2539 | } | |
2540 | ||
0729219d DJ |
2541 | bad_attach = 0; |
2542 | pid = 0; | |
2d717e4f DJ |
2543 | |
2544 | /* --attach used to come after PORT, so allow it there for | |
2545 | compatibility. */ | |
2546 | if (*next_arg != NULL && strcmp (*next_arg, "--attach") == 0) | |
45b7b345 | 2547 | { |
2d717e4f DJ |
2548 | attach = 1; |
2549 | next_arg++; | |
45b7b345 DJ |
2550 | } |
2551 | ||
2d717e4f DJ |
2552 | if (attach |
2553 | && (*next_arg == NULL | |
2554 | || (*next_arg)[0] == '\0' | |
2555 | || (pid = strtoul (*next_arg, &arg_end, 0)) == 0 | |
2556 | || *arg_end != '\0' | |
2557 | || next_arg[1] != NULL)) | |
2558 | bad_attach = 1; | |
2559 | ||
2560 | if (bad_attach) | |
dd24457d | 2561 | { |
c16158bc | 2562 | gdbserver_usage (stderr); |
dd24457d DJ |
2563 | exit (1); |
2564 | } | |
c906108c | 2565 | |
95954743 | 2566 | initialize_inferiors (); |
a20d5e98 | 2567 | initialize_async_io (); |
4ce44c66 | 2568 | initialize_low (); |
219f2f23 PA |
2569 | if (target_supports_tracepoints ()) |
2570 | initialize_tracepoint (); | |
4ce44c66 | 2571 | |
bca929d3 DE |
2572 | own_buf = xmalloc (PBUFSIZ + 1); |
2573 | mem_buf = xmalloc (PBUFSIZ); | |
0a30fbc4 | 2574 | |
2d717e4f | 2575 | if (pid == 0 && *next_arg != NULL) |
45b7b345 | 2576 | { |
2d717e4f DJ |
2577 | int i, n; |
2578 | ||
2579 | n = argc - (next_arg - argv); | |
bca929d3 | 2580 | program_argv = xmalloc (sizeof (char *) * (n + 1)); |
2d717e4f | 2581 | for (i = 0; i < n; i++) |
bca929d3 | 2582 | program_argv[i] = xstrdup (next_arg[i]); |
2d717e4f DJ |
2583 | program_argv[i] = NULL; |
2584 | ||
45b7b345 | 2585 | /* Wait till we are at first instruction in program. */ |
5b1c542e | 2586 | start_inferior (program_argv); |
c906108c | 2587 | |
c588c53c MS |
2588 | /* We are now (hopefully) stopped at the first instruction of |
2589 | the target process. This assumes that the target process was | |
2590 | successfully created. */ | |
45b7b345 | 2591 | } |
2d717e4f DJ |
2592 | else if (pid != 0) |
2593 | { | |
5b1c542e | 2594 | if (attach_inferior (pid) == -1) |
2d717e4f DJ |
2595 | error ("Attaching not supported on this target"); |
2596 | ||
2597 | /* Otherwise succeeded. */ | |
2598 | } | |
45b7b345 DJ |
2599 | else |
2600 | { | |
5b1c542e PA |
2601 | last_status.kind = TARGET_WAITKIND_EXITED; |
2602 | last_status.value.integer = 0; | |
95954743 | 2603 | last_ptid = minus_one_ptid; |
45b7b345 | 2604 | } |
c906108c | 2605 | |
311de423 PA |
2606 | /* Don't report shared library events on the initial connection, |
2607 | even if some libraries are preloaded. Avoids the "stopped by | |
2608 | shared library event" notice on gdb side. */ | |
2609 | dlls_changed = 0; | |
2610 | ||
8264bb58 DJ |
2611 | if (setjmp (toplevel)) |
2612 | { | |
9f767825 | 2613 | detach_or_kill_for_exit (); |
8264bb58 DJ |
2614 | exit (1); |
2615 | } | |
2616 | ||
5b1c542e PA |
2617 | if (last_status.kind == TARGET_WAITKIND_EXITED |
2618 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2d717e4f DJ |
2619 | was_running = 0; |
2620 | else | |
2621 | was_running = 1; | |
2622 | ||
2623 | if (!was_running && !multi_mode) | |
c588c53c | 2624 | { |
2d717e4f | 2625 | fprintf (stderr, "No program to debug. GDBserver exiting.\n"); |
c588c53c MS |
2626 | exit (1); |
2627 | } | |
2628 | ||
c906108c SS |
2629 | while (1) |
2630 | { | |
a6f3e723 | 2631 | noack_mode = 0; |
95954743 | 2632 | multi_process = 0; |
8336d594 PA |
2633 | /* Be sure we're out of tfind mode. */ |
2634 | current_traceframe = -1; | |
bd99dc85 | 2635 | |
2d717e4f | 2636 | remote_open (port); |
c906108c | 2637 | |
2d717e4f DJ |
2638 | if (setjmp (toplevel) != 0) |
2639 | { | |
2640 | /* An error occurred. */ | |
2641 | if (response_needed) | |
2642 | { | |
2643 | write_enn (own_buf); | |
2644 | putpkt (own_buf); | |
2645 | } | |
2646 | } | |
2647 | ||
bd99dc85 | 2648 | /* Wait for events. This will return when all event sources are |
8336d594 | 2649 | removed from the event loop. */ |
bd99dc85 PA |
2650 | start_event_loop (); |
2651 | ||
2652 | /* If an exit was requested (using the "monitor exit" command), | |
2653 | terminate now. The only other way to get here is for | |
2654 | getpkt to fail; close the connection and reopen it at the | |
2655 | top of the loop. */ | |
2656 | ||
2657 | if (exit_requested) | |
c906108c | 2658 | { |
9f767825 | 2659 | detach_or_kill_for_exit (); |
bd99dc85 PA |
2660 | exit (0); |
2661 | } | |
8336d594 PA |
2662 | |
2663 | fprintf (stderr, | |
2664 | "Remote side has terminated connection. " | |
2665 | "GDBserver will reopen the connection.\n"); | |
2666 | ||
2667 | if (tracing) | |
2668 | { | |
2669 | if (disconnected_tracing) | |
2670 | { | |
2671 | /* Try to enable non-stop/async mode, so we we can both | |
2672 | wait for an async socket accept, and handle async | |
2673 | target events simultaneously. There's also no point | |
2674 | either in having the target always stop all threads, | |
2675 | when we're going to pass signals down without | |
2676 | informing GDB. */ | |
2677 | if (!non_stop) | |
2678 | { | |
2679 | if (start_non_stop (1)) | |
2680 | non_stop = 1; | |
2681 | ||
2682 | /* Detaching implicitly resumes all threads; simply | |
2683 | disconnecting does not. */ | |
2684 | } | |
2685 | } | |
2686 | else | |
2687 | { | |
2688 | fprintf (stderr, | |
2689 | "Disconnected tracing disabled; stopping trace run.\n"); | |
2690 | stop_tracing (); | |
2691 | } | |
2692 | } | |
bd99dc85 PA |
2693 | } |
2694 | } | |
01f9e8fa | 2695 | |
bd99dc85 PA |
2696 | /* Event loop callback that handles a serial event. The first byte in |
2697 | the serial buffer gets us here. We expect characters to arrive at | |
2698 | a brisk pace, so we read the rest of the packet with a blocking | |
2699 | getpkt call. */ | |
01f9e8fa | 2700 | |
8336d594 | 2701 | static int |
bd99dc85 PA |
2702 | process_serial_event (void) |
2703 | { | |
2704 | char ch; | |
2705 | int i = 0; | |
2706 | int signal; | |
2707 | unsigned int len; | |
2708 | CORE_ADDR mem_addr; | |
95954743 | 2709 | int pid; |
bd99dc85 PA |
2710 | unsigned char sig; |
2711 | int packet_len; | |
2712 | int new_packet_len = -1; | |
2713 | ||
2714 | /* Used to decide when gdbserver should exit in | |
2715 | multi-mode/remote. */ | |
2716 | static int have_ran = 0; | |
2717 | ||
2718 | if (!have_ran) | |
2719 | have_ran = target_running (); | |
2720 | ||
2721 | disable_async_io (); | |
2722 | ||
2723 | response_needed = 0; | |
2724 | packet_len = getpkt (own_buf); | |
2725 | if (packet_len <= 0) | |
2726 | { | |
bd99dc85 | 2727 | remote_close (); |
8336d594 PA |
2728 | /* Force an event loop break. */ |
2729 | return -1; | |
bd99dc85 PA |
2730 | } |
2731 | response_needed = 1; | |
2732 | ||
2733 | i = 0; | |
2734 | ch = own_buf[i++]; | |
2735 | switch (ch) | |
2736 | { | |
2737 | case 'q': | |
2738 | handle_query (own_buf, packet_len, &new_packet_len); | |
2739 | break; | |
2740 | case 'Q': | |
2741 | handle_general_set (own_buf); | |
2742 | break; | |
2743 | case 'D': | |
2744 | require_running (own_buf); | |
95954743 PA |
2745 | |
2746 | if (multi_process) | |
2747 | { | |
2748 | i++; /* skip ';' */ | |
2749 | pid = strtol (&own_buf[i], NULL, 16); | |
2750 | } | |
2751 | else | |
2752 | pid = | |
2753 | ptid_get_pid (((struct inferior_list_entry *) current_inferior)->id); | |
2754 | ||
8336d594 PA |
2755 | if (tracing && disconnected_tracing) |
2756 | { | |
2757 | struct thread_resume resume_info; | |
2758 | struct process_info *process = find_process_pid (pid); | |
2759 | ||
2760 | if (process == NULL) | |
2761 | { | |
2762 | write_enn (own_buf); | |
2763 | break; | |
2764 | } | |
2765 | ||
2766 | fprintf (stderr, | |
2767 | "Disconnected tracing in effect, " | |
2768 | "leaving gdbserver attached to the process\n"); | |
2769 | ||
2770 | /* Make sure we're in non-stop/async mode, so we we can both | |
2771 | wait for an async socket accept, and handle async target | |
2772 | events simultaneously. There's also no point either in | |
2773 | having the target stop all threads, when we're going to | |
2774 | pass signals down without informing GDB. */ | |
2775 | if (!non_stop) | |
2776 | { | |
2777 | if (debug_threads) | |
2778 | fprintf (stderr, "Forcing non-stop mode\n"); | |
2779 | ||
2780 | non_stop = 1; | |
2781 | start_non_stop (1); | |
2782 | } | |
2783 | ||
2784 | process->gdb_detached = 1; | |
2785 | ||
2786 | /* Detaching implicitly resumes all threads. */ | |
2787 | resume_info.thread = minus_one_ptid; | |
2788 | resume_info.kind = resume_continue; | |
2789 | resume_info.sig = 0; | |
2790 | (*the_target->resume) (&resume_info, 1); | |
2791 | ||
2792 | write_ok (own_buf); | |
2793 | break; /* from switch/case */ | |
2794 | } | |
2795 | ||
95954743 | 2796 | fprintf (stderr, "Detaching from process %d\n", pid); |
8336d594 | 2797 | stop_tracing (); |
95954743 | 2798 | if (detach_inferior (pid) != 0) |
bd99dc85 PA |
2799 | write_enn (own_buf); |
2800 | else | |
2801 | { | |
95954743 | 2802 | discard_queued_stop_replies (pid); |
bd99dc85 PA |
2803 | write_ok (own_buf); |
2804 | ||
2805 | if (extended_protocol) | |
c906108c | 2806 | { |
bd99dc85 PA |
2807 | /* Treat this like a normal program exit. */ |
2808 | last_status.kind = TARGET_WAITKIND_EXITED; | |
2809 | last_status.value.integer = 0; | |
95954743 | 2810 | last_ptid = pid_to_ptid (pid); |
2d717e4f | 2811 | |
bd99dc85 PA |
2812 | current_inferior = NULL; |
2813 | } | |
2814 | else | |
2815 | { | |
2816 | putpkt (own_buf); | |
2817 | remote_close (); | |
2818 | ||
2819 | /* If we are attached, then we can exit. Otherwise, we | |
2820 | need to hang around doing nothing, until the child is | |
2821 | gone. */ | |
95954743 PA |
2822 | for_each_inferior (&all_processes, |
2823 | join_inferiors_callback); | |
bd99dc85 PA |
2824 | exit (0); |
2825 | } | |
2826 | } | |
2827 | break; | |
2828 | case '!': | |
2829 | extended_protocol = 1; | |
2830 | write_ok (own_buf); | |
2831 | break; | |
2832 | case '?': | |
2833 | handle_status (own_buf); | |
2834 | break; | |
2835 | case 'H': | |
2836 | if (own_buf[1] == 'c' || own_buf[1] == 'g' || own_buf[1] == 's') | |
2837 | { | |
95954743 PA |
2838 | ptid_t gdb_id, thread_id; |
2839 | int pid; | |
bd99dc85 PA |
2840 | |
2841 | require_running (own_buf); | |
95954743 PA |
2842 | |
2843 | gdb_id = read_ptid (&own_buf[2], NULL); | |
2844 | ||
2845 | pid = ptid_get_pid (gdb_id); | |
2846 | ||
2847 | if (ptid_equal (gdb_id, null_ptid) | |
2848 | || ptid_equal (gdb_id, minus_one_ptid)) | |
2849 | thread_id = null_ptid; | |
2850 | else if (pid != 0 | |
2851 | && ptid_equal (pid_to_ptid (pid), | |
2852 | gdb_id)) | |
2853 | { | |
2854 | struct thread_info *thread = | |
2855 | (struct thread_info *) find_inferior (&all_threads, | |
2856 | first_thread_of, | |
2857 | &pid); | |
2858 | if (!thread) | |
2859 | { | |
2860 | write_enn (own_buf); | |
2861 | break; | |
2862 | } | |
2863 | ||
2864 | thread_id = ((struct inferior_list_entry *)thread)->id; | |
2865 | } | |
bd99dc85 PA |
2866 | else |
2867 | { | |
2868 | thread_id = gdb_id_to_thread_id (gdb_id); | |
95954743 | 2869 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 2870 | { |
a06660f7 | 2871 | write_enn (own_buf); |
c906108c SS |
2872 | break; |
2873 | } | |
c906108c SS |
2874 | } |
2875 | ||
bd99dc85 | 2876 | if (own_buf[1] == 'g') |
c906108c | 2877 | { |
95954743 | 2878 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 2879 | { |
bd99dc85 PA |
2880 | /* GDB is telling us to choose any thread. Check if |
2881 | the currently selected thread is still valid. If | |
2882 | it is not, select the first available. */ | |
2883 | struct thread_info *thread = | |
2884 | (struct thread_info *) find_inferior_id (&all_threads, | |
2885 | general_thread); | |
2886 | if (thread == NULL) | |
2887 | thread_id = all_threads.head->id; | |
c906108c | 2888 | } |
bd99dc85 PA |
2889 | |
2890 | general_thread = thread_id; | |
2891 | set_desired_inferior (1); | |
c906108c | 2892 | } |
bd99dc85 PA |
2893 | else if (own_buf[1] == 'c') |
2894 | cont_thread = thread_id; | |
2895 | else if (own_buf[1] == 's') | |
2896 | step_thread = thread_id; | |
c906108c | 2897 | |
bd99dc85 PA |
2898 | write_ok (own_buf); |
2899 | } | |
2900 | else | |
2901 | { | |
2902 | /* Silently ignore it so that gdb can extend the protocol | |
2903 | without compatibility headaches. */ | |
2904 | own_buf[0] = '\0'; | |
2d717e4f | 2905 | } |
bd99dc85 PA |
2906 | break; |
2907 | case 'g': | |
219f2f23 PA |
2908 | require_running (own_buf); |
2909 | if (current_traceframe >= 0) | |
2910 | { | |
2911 | struct regcache *regcache = new_register_cache (); | |
2912 | ||
2913 | if (fetch_traceframe_registers (current_traceframe, | |
2914 | regcache, -1) == 0) | |
2915 | registers_to_string (regcache, own_buf); | |
2916 | else | |
2917 | write_enn (own_buf); | |
2918 | free_register_cache (regcache); | |
2919 | } | |
2920 | else | |
2921 | { | |
2922 | struct regcache *regcache; | |
2923 | ||
2924 | set_desired_inferior (1); | |
2925 | regcache = get_thread_regcache (current_inferior, 1); | |
2926 | registers_to_string (regcache, own_buf); | |
2927 | } | |
bd99dc85 PA |
2928 | break; |
2929 | case 'G': | |
219f2f23 PA |
2930 | require_running (own_buf); |
2931 | if (current_traceframe >= 0) | |
2932 | write_enn (own_buf); | |
2933 | else | |
2934 | { | |
442ea881 PA |
2935 | struct regcache *regcache; |
2936 | ||
442ea881 PA |
2937 | set_desired_inferior (1); |
2938 | regcache = get_thread_regcache (current_inferior, 1); | |
2939 | registers_from_string (regcache, &own_buf[1]); | |
2940 | write_ok (own_buf); | |
2941 | } | |
bd99dc85 PA |
2942 | break; |
2943 | case 'm': | |
2944 | require_running (own_buf); | |
2945 | decode_m_packet (&own_buf[1], &mem_addr, &len); | |
90d74c30 | 2946 | if (gdb_read_memory (mem_addr, mem_buf, len) == 0) |
bd99dc85 PA |
2947 | convert_int_to_ascii (mem_buf, own_buf, len); |
2948 | else | |
2949 | write_enn (own_buf); | |
2950 | break; | |
2951 | case 'M': | |
2952 | require_running (own_buf); | |
fa593d66 | 2953 | decode_M_packet (&own_buf[1], &mem_addr, &len, &mem_buf); |
90d74c30 | 2954 | if (gdb_write_memory (mem_addr, mem_buf, len) == 0) |
bd99dc85 PA |
2955 | write_ok (own_buf); |
2956 | else | |
2957 | write_enn (own_buf); | |
2958 | break; | |
2959 | case 'X': | |
2960 | require_running (own_buf); | |
2961 | if (decode_X_packet (&own_buf[1], packet_len - 1, | |
fa593d66 | 2962 | &mem_addr, &len, &mem_buf) < 0 |
90d74c30 | 2963 | || gdb_write_memory (mem_addr, mem_buf, len) != 0) |
bd99dc85 PA |
2964 | write_enn (own_buf); |
2965 | else | |
2966 | write_ok (own_buf); | |
2967 | break; | |
2968 | case 'C': | |
2969 | require_running (own_buf); | |
2970 | convert_ascii_to_int (own_buf + 1, &sig, 1); | |
2971 | if (target_signal_to_host_p (sig)) | |
2972 | signal = target_signal_to_host (sig); | |
2973 | else | |
2974 | signal = 0; | |
2975 | myresume (own_buf, 0, signal); | |
2976 | break; | |
2977 | case 'S': | |
2978 | require_running (own_buf); | |
2979 | convert_ascii_to_int (own_buf + 1, &sig, 1); | |
2980 | if (target_signal_to_host_p (sig)) | |
2981 | signal = target_signal_to_host (sig); | |
2982 | else | |
2983 | signal = 0; | |
2984 | myresume (own_buf, 1, signal); | |
2985 | break; | |
2986 | case 'c': | |
2987 | require_running (own_buf); | |
2988 | signal = 0; | |
2989 | myresume (own_buf, 0, signal); | |
2990 | break; | |
2991 | case 's': | |
2992 | require_running (own_buf); | |
2993 | signal = 0; | |
2994 | myresume (own_buf, 1, signal); | |
2995 | break; | |
c6314022 AR |
2996 | case 'Z': /* insert_ ... */ |
2997 | /* Fallthrough. */ | |
2998 | case 'z': /* remove_ ... */ | |
bd99dc85 PA |
2999 | { |
3000 | char *lenptr; | |
3001 | char *dataptr; | |
3002 | CORE_ADDR addr = strtoul (&own_buf[3], &lenptr, 16); | |
3003 | int len = strtol (lenptr + 1, &dataptr, 16); | |
3004 | char type = own_buf[1]; | |
c6314022 | 3005 | int res; |
d993e290 | 3006 | const int insert = ch == 'Z'; |
c6314022 | 3007 | |
d993e290 PA |
3008 | /* Default to unrecognized/unsupported. */ |
3009 | res = 1; | |
3010 | switch (type) | |
3011 | { | |
3012 | case '0': /* software-breakpoint */ | |
3013 | case '1': /* hardware-breakpoint */ | |
3014 | case '2': /* write watchpoint */ | |
3015 | case '3': /* read watchpoint */ | |
3016 | case '4': /* access watchpoint */ | |
3017 | require_running (own_buf); | |
3018 | if (insert && the_target->insert_point != NULL) | |
3019 | res = (*the_target->insert_point) (type, addr, len); | |
3020 | else if (!insert && the_target->remove_point != NULL) | |
3021 | res = (*the_target->remove_point) (type, addr, len); | |
3022 | break; | |
3023 | default: | |
3024 | break; | |
3025 | } | |
bd99dc85 | 3026 | |
c6314022 AR |
3027 | if (res == 0) |
3028 | write_ok (own_buf); | |
3029 | else if (res == 1) | |
3030 | /* Unsupported. */ | |
3031 | own_buf[0] = '\0'; | |
bd99dc85 | 3032 | else |
c6314022 | 3033 | write_enn (own_buf); |
bd99dc85 PA |
3034 | break; |
3035 | } | |
3036 | case 'k': | |
3037 | response_needed = 0; | |
3038 | if (!target_running ()) | |
95954743 PA |
3039 | /* The packet we received doesn't make sense - but we can't |
3040 | reply to it, either. */ | |
8336d594 | 3041 | return 0; |
c906108c | 3042 | |
95954743 PA |
3043 | fprintf (stderr, "Killing all inferiors\n"); |
3044 | for_each_inferior (&all_processes, kill_inferior_callback); | |
c906108c | 3045 | |
bd99dc85 PA |
3046 | /* When using the extended protocol, we wait with no program |
3047 | running. The traditional protocol will exit instead. */ | |
3048 | if (extended_protocol) | |
3049 | { | |
3050 | last_status.kind = TARGET_WAITKIND_EXITED; | |
3051 | last_status.value.sig = TARGET_SIGNAL_KILL; | |
8336d594 | 3052 | return 0; |
bd99dc85 PA |
3053 | } |
3054 | else | |
8336d594 PA |
3055 | exit (0); |
3056 | ||
bd99dc85 PA |
3057 | case 'T': |
3058 | { | |
95954743 | 3059 | ptid_t gdb_id, thread_id; |
bd99dc85 PA |
3060 | |
3061 | require_running (own_buf); | |
95954743 PA |
3062 | |
3063 | gdb_id = read_ptid (&own_buf[1], NULL); | |
bd99dc85 | 3064 | thread_id = gdb_id_to_thread_id (gdb_id); |
95954743 | 3065 | if (ptid_equal (thread_id, null_ptid)) |
bd99dc85 PA |
3066 | { |
3067 | write_enn (own_buf); | |
3068 | break; | |
3069 | } | |
3070 | ||
3071 | if (mythread_alive (thread_id)) | |
3072 | write_ok (own_buf); | |
3073 | else | |
3074 | write_enn (own_buf); | |
3075 | } | |
3076 | break; | |
3077 | case 'R': | |
3078 | response_needed = 0; | |
3079 | ||
3080 | /* Restarting the inferior is only supported in the extended | |
3081 | protocol. */ | |
3082 | if (extended_protocol) | |
3083 | { | |
3084 | if (target_running ()) | |
95954743 PA |
3085 | for_each_inferior (&all_processes, |
3086 | kill_inferior_callback); | |
bd99dc85 PA |
3087 | fprintf (stderr, "GDBserver restarting\n"); |
3088 | ||
3089 | /* Wait till we are at 1st instruction in prog. */ | |
3090 | if (program_argv != NULL) | |
3091 | start_inferior (program_argv); | |
3092 | else | |
3093 | { | |
3094 | last_status.kind = TARGET_WAITKIND_EXITED; | |
3095 | last_status.value.sig = TARGET_SIGNAL_KILL; | |
3096 | } | |
8336d594 | 3097 | return 0; |
c906108c SS |
3098 | } |
3099 | else | |
3100 | { | |
bd99dc85 PA |
3101 | /* It is a request we don't understand. Respond with an |
3102 | empty packet so that gdb knows that we don't support this | |
3103 | request. */ | |
3104 | own_buf[0] = '\0'; | |
3105 | break; | |
3106 | } | |
3107 | case 'v': | |
3108 | /* Extended (long) request. */ | |
3109 | handle_v_requests (own_buf, packet_len, &new_packet_len); | |
3110 | break; | |
3111 | ||
3112 | default: | |
3113 | /* It is a request we don't understand. Respond with an empty | |
3114 | packet so that gdb knows that we don't support this | |
3115 | request. */ | |
3116 | own_buf[0] = '\0'; | |
3117 | break; | |
3118 | } | |
3119 | ||
3120 | if (new_packet_len != -1) | |
3121 | putpkt_binary (own_buf, new_packet_len); | |
3122 | else | |
3123 | putpkt (own_buf); | |
3124 | ||
3125 | response_needed = 0; | |
3126 | ||
3127 | if (!extended_protocol && have_ran && !target_running ()) | |
3128 | { | |
3129 | /* In non-stop, defer exiting until GDB had a chance to query | |
3130 | the whole vStopped list (until it gets an OK). */ | |
3131 | if (!notif_queue) | |
3132 | { | |
3133 | fprintf (stderr, "GDBserver exiting\n"); | |
c906108c | 3134 | remote_close (); |
bd99dc85 | 3135 | exit (0); |
c906108c SS |
3136 | } |
3137 | } | |
8336d594 PA |
3138 | |
3139 | if (exit_requested) | |
3140 | return -1; | |
3141 | ||
3142 | return 0; | |
c906108c | 3143 | } |
bd99dc85 PA |
3144 | |
3145 | /* Event-loop callback for serial events. */ | |
3146 | ||
8336d594 | 3147 | int |
bd99dc85 PA |
3148 | handle_serial_event (int err, gdb_client_data client_data) |
3149 | { | |
3150 | if (debug_threads) | |
3151 | fprintf (stderr, "handling possible serial event\n"); | |
3152 | ||
3153 | /* Really handle it. */ | |
8336d594 PA |
3154 | if (process_serial_event () < 0) |
3155 | return -1; | |
bd99dc85 PA |
3156 | |
3157 | /* Be sure to not change the selected inferior behind GDB's back. | |
3158 | Important in the non-stop mode asynchronous protocol. */ | |
3159 | set_desired_inferior (1); | |
8336d594 PA |
3160 | |
3161 | return 0; | |
bd99dc85 PA |
3162 | } |
3163 | ||
3164 | /* Event-loop callback for target events. */ | |
3165 | ||
8336d594 | 3166 | int |
bd99dc85 PA |
3167 | handle_target_event (int err, gdb_client_data client_data) |
3168 | { | |
3169 | if (debug_threads) | |
3170 | fprintf (stderr, "handling possible target event\n"); | |
3171 | ||
95954743 PA |
3172 | last_ptid = mywait (minus_one_ptid, &last_status, |
3173 | TARGET_WNOHANG, 1); | |
bd99dc85 PA |
3174 | |
3175 | if (last_status.kind != TARGET_WAITKIND_IGNORE) | |
3176 | { | |
8336d594 PA |
3177 | int pid = ptid_get_pid (last_ptid); |
3178 | struct process_info *process = find_process_pid (pid); | |
3179 | int forward_event = !gdb_connected () || process->gdb_detached; | |
3180 | ||
3181 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
3182 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
f9e39928 PA |
3183 | { |
3184 | mark_breakpoints_out (process); | |
3185 | mourn_inferior (process); | |
3186 | } | |
ce1a5b52 | 3187 | else |
d20a8ad9 PA |
3188 | { |
3189 | /* We're reporting this thread as stopped. Update its | |
3190 | "want-stopped" state to what the client wants, until it | |
3191 | gets a new resume action. */ | |
3192 | current_inferior->last_resume_kind = resume_stop; | |
3193 | current_inferior->last_status = last_status; | |
3194 | } | |
8336d594 PA |
3195 | |
3196 | if (forward_event) | |
3197 | { | |
3198 | if (!target_running ()) | |
3199 | { | |
3200 | /* The last process exited. We're done. */ | |
3201 | exit (0); | |
3202 | } | |
3203 | ||
3204 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
3205 | { | |
3206 | /* A thread stopped with a signal, but gdb isn't | |
3207 | connected to handle it. Pass it down to the | |
3208 | inferior, as if it wasn't being traced. */ | |
3209 | struct thread_resume resume_info; | |
3210 | ||
3211 | if (debug_threads) | |
3212 | fprintf (stderr, | |
3213 | "GDB not connected; forwarding event %d for [%s]\n", | |
3214 | (int) last_status.kind, | |
3215 | target_pid_to_str (last_ptid)); | |
3216 | ||
3217 | resume_info.thread = last_ptid; | |
3218 | resume_info.kind = resume_continue; | |
30d50328 | 3219 | resume_info.sig = target_signal_to_host (last_status.value.sig); |
8336d594 PA |
3220 | (*the_target->resume) (&resume_info, 1); |
3221 | } | |
3222 | else if (debug_threads) | |
3223 | fprintf (stderr, "GDB not connected; ignoring event %d for [%s]\n", | |
3224 | (int) last_status.kind, | |
3225 | target_pid_to_str (last_ptid)); | |
3226 | } | |
3227 | else | |
3228 | { | |
3229 | /* Something interesting. Tell GDB about it. */ | |
3230 | push_event (last_ptid, &last_status); | |
3231 | } | |
bd99dc85 PA |
3232 | } |
3233 | ||
3234 | /* Be sure to not change the selected inferior behind GDB's back. | |
3235 | Important in the non-stop mode asynchronous protocol. */ | |
3236 | set_desired_inferior (1); | |
8336d594 PA |
3237 | |
3238 | return 0; | |
bd99dc85 | 3239 | } |