Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Main code for remote server for GDB. |
6aba47ca | 2 | Copyright (C) 1989, 1993, 1994, 1995, 1997, 1998, 1999, 2000, 2002, 2003, |
7b6bb8da JB |
3 | 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
4 | Free Software Foundation, Inc. | |
c906108c | 5 | |
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 11 | (at your option) any later version. |
c906108c | 12 | |
c5aa993b JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
c906108c | 17 | |
c5aa993b | 18 | You should have received a copy of the GNU General Public License |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
20 | |
21 | #include "server.h" | |
22 | ||
68070c10 | 23 | #if HAVE_UNISTD_H |
a9fa9f7d | 24 | #include <unistd.h> |
68070c10 PA |
25 | #endif |
26 | #if HAVE_SIGNAL_H | |
a9fa9f7d | 27 | #include <signal.h> |
68070c10 | 28 | #endif |
b80864fb | 29 | #if HAVE_SYS_WAIT_H |
a9fa9f7d | 30 | #include <sys/wait.h> |
b80864fb | 31 | #endif |
a9fa9f7d | 32 | |
95954743 PA |
33 | ptid_t cont_thread; |
34 | ptid_t general_thread; | |
5b1c542e | 35 | |
0d62e5e8 DJ |
36 | int server_waiting; |
37 | ||
2d717e4f | 38 | static int extended_protocol; |
2d717e4f DJ |
39 | static int response_needed; |
40 | static int exit_requested; | |
41 | ||
03f2bd59 JK |
42 | /* --once: Exit after the first connection has closed. */ |
43 | int run_once; | |
44 | ||
95954743 | 45 | int multi_process; |
bd99dc85 PA |
46 | int non_stop; |
47 | ||
03583c20 UW |
48 | /* Whether we should attempt to disable the operating system's address |
49 | space randomization feature before starting an inferior. */ | |
50 | int disable_randomization = 1; | |
51 | ||
ccd213ac | 52 | static char **program_argv, **wrapper_argv; |
2d717e4f | 53 | |
c74d0ad8 DJ |
54 | /* Enable miscellaneous debugging output. The name is historical - it |
55 | was originally used to debug LinuxThreads support. */ | |
56 | int debug_threads; | |
57 | ||
aa5ca48f DE |
58 | /* Enable debugging of h/w breakpoint/watchpoint support. */ |
59 | int debug_hw_points; | |
60 | ||
89be2091 DJ |
61 | int pass_signals[TARGET_SIGNAL_LAST]; |
62 | ||
c906108c | 63 | jmp_buf toplevel; |
c906108c | 64 | |
9b4b61c8 UW |
65 | const char *gdbserver_xmltarget; |
66 | ||
a9fa9f7d DJ |
67 | /* The PID of the originally created or attached inferior. Used to |
68 | send signals to the process when GDB sends us an asynchronous interrupt | |
69 | (user hitting Control-C in the client), and to wait for the child to exit | |
70 | when no longer debugging it. */ | |
71 | ||
a1928bad | 72 | unsigned long signal_pid; |
a9fa9f7d | 73 | |
290fadea RS |
74 | #ifdef SIGTTOU |
75 | /* A file descriptor for the controlling terminal. */ | |
76 | int terminal_fd; | |
77 | ||
78 | /* TERMINAL_FD's original foreground group. */ | |
79 | pid_t old_foreground_pgrp; | |
80 | ||
81 | /* Hand back terminal ownership to the original foreground group. */ | |
82 | ||
83 | static void | |
84 | restore_old_foreground_pgrp (void) | |
85 | { | |
86 | tcsetpgrp (terminal_fd, old_foreground_pgrp); | |
87 | } | |
88 | #endif | |
89 | ||
ec56be1b PA |
90 | /* Set if you want to disable optional thread related packets support |
91 | in gdbserver, for the sake of testing GDB against stubs that don't | |
92 | support them. */ | |
93 | int disable_packet_vCont; | |
94 | int disable_packet_Tthread; | |
95 | int disable_packet_qC; | |
96 | int disable_packet_qfThreadInfo; | |
97 | ||
5b1c542e PA |
98 | /* Last status reported to GDB. */ |
99 | static struct target_waitstatus last_status; | |
95954743 | 100 | static ptid_t last_ptid; |
5b1c542e | 101 | |
bd99dc85 PA |
102 | static char *own_buf; |
103 | static unsigned char *mem_buf; | |
104 | ||
105 | /* Structure holding information relative to a single stop reply. We | |
106 | keep a queue of these (really a singly-linked list) to push to GDB | |
107 | in non-stop mode. */ | |
108 | struct vstop_notif | |
109 | { | |
110 | /* Pointer to next in list. */ | |
111 | struct vstop_notif *next; | |
112 | ||
113 | /* Thread or process that got the event. */ | |
95954743 | 114 | ptid_t ptid; |
bd99dc85 PA |
115 | |
116 | /* Event info. */ | |
117 | struct target_waitstatus status; | |
118 | }; | |
119 | ||
120 | /* The pending stop replies list head. */ | |
121 | static struct vstop_notif *notif_queue = NULL; | |
122 | ||
123 | /* Put a stop reply to the stop reply queue. */ | |
124 | ||
125 | static void | |
95954743 | 126 | queue_stop_reply (ptid_t ptid, struct target_waitstatus *status) |
bd99dc85 PA |
127 | { |
128 | struct vstop_notif *new_notif; | |
129 | ||
cfdee94a | 130 | new_notif = xmalloc (sizeof (*new_notif)); |
bd99dc85 PA |
131 | new_notif->next = NULL; |
132 | new_notif->ptid = ptid; | |
133 | new_notif->status = *status; | |
134 | ||
135 | if (notif_queue) | |
136 | { | |
137 | struct vstop_notif *tail; | |
138 | for (tail = notif_queue; | |
139 | tail && tail->next; | |
140 | tail = tail->next) | |
141 | ; | |
142 | tail->next = new_notif; | |
143 | } | |
144 | else | |
145 | notif_queue = new_notif; | |
146 | ||
147 | if (remote_debug) | |
148 | { | |
149 | int i = 0; | |
150 | struct vstop_notif *n; | |
151 | ||
152 | for (n = notif_queue; n; n = n->next) | |
153 | i++; | |
154 | ||
155 | fprintf (stderr, "pending stop replies: %d\n", i); | |
156 | } | |
157 | } | |
158 | ||
159 | /* Place an event in the stop reply queue, and push a notification if | |
160 | we aren't sending one yet. */ | |
161 | ||
162 | void | |
95954743 | 163 | push_event (ptid_t ptid, struct target_waitstatus *status) |
bd99dc85 | 164 | { |
d20a8ad9 PA |
165 | gdb_assert (status->kind != TARGET_WAITKIND_IGNORE); |
166 | ||
bd99dc85 PA |
167 | queue_stop_reply (ptid, status); |
168 | ||
169 | /* If this is the first stop reply in the queue, then inform GDB | |
170 | about it, by sending a Stop notification. */ | |
171 | if (notif_queue->next == NULL) | |
172 | { | |
173 | char *p = own_buf; | |
174 | strcpy (p, "Stop:"); | |
175 | p += strlen (p); | |
176 | prepare_resume_reply (p, | |
177 | notif_queue->ptid, ¬if_queue->status); | |
178 | putpkt_notif (own_buf); | |
179 | } | |
180 | } | |
181 | ||
95954743 PA |
182 | /* Get rid of the currently pending stop replies for PID. If PID is |
183 | -1, then apply to all processes. */ | |
bd99dc85 PA |
184 | |
185 | static void | |
95954743 | 186 | discard_queued_stop_replies (int pid) |
bd99dc85 | 187 | { |
95954743 | 188 | struct vstop_notif *prev = NULL, *reply, *next; |
bd99dc85 | 189 | |
95954743 | 190 | for (reply = notif_queue; reply; reply = next) |
bd99dc85 | 191 | { |
95954743 PA |
192 | next = reply->next; |
193 | ||
194 | if (pid == -1 | |
195 | || ptid_get_pid (reply->ptid) == pid) | |
196 | { | |
197 | if (reply == notif_queue) | |
198 | notif_queue = next; | |
199 | else | |
200 | prev->next = reply->next; | |
bd99dc85 | 201 | |
95954743 PA |
202 | free (reply); |
203 | } | |
204 | else | |
205 | prev = reply; | |
bd99dc85 PA |
206 | } |
207 | } | |
208 | ||
209 | /* If there are more stop replies to push, push one now. */ | |
210 | ||
211 | static void | |
212 | send_next_stop_reply (char *own_buf) | |
213 | { | |
214 | if (notif_queue) | |
215 | prepare_resume_reply (own_buf, | |
216 | notif_queue->ptid, | |
217 | ¬if_queue->status); | |
218 | else | |
219 | write_ok (own_buf); | |
220 | } | |
221 | ||
2d717e4f DJ |
222 | static int |
223 | target_running (void) | |
224 | { | |
225 | return all_threads.head != NULL; | |
226 | } | |
227 | ||
fc620387 | 228 | static int |
5b1c542e | 229 | start_inferior (char **argv) |
c906108c | 230 | { |
ccd213ac | 231 | char **new_argv = argv; |
2d717e4f | 232 | |
ccd213ac DJ |
233 | if (wrapper_argv != NULL) |
234 | { | |
235 | int i, count = 1; | |
236 | ||
237 | for (i = 0; wrapper_argv[i] != NULL; i++) | |
238 | count++; | |
239 | for (i = 0; argv[i] != NULL; i++) | |
240 | count++; | |
241 | new_argv = alloca (sizeof (char *) * count); | |
242 | count = 0; | |
243 | for (i = 0; wrapper_argv[i] != NULL; i++) | |
244 | new_argv[count++] = wrapper_argv[i]; | |
245 | for (i = 0; argv[i] != NULL; i++) | |
246 | new_argv[count++] = argv[i]; | |
247 | new_argv[count] = NULL; | |
248 | } | |
249 | ||
65730243 DE |
250 | if (debug_threads) |
251 | { | |
252 | int i; | |
253 | for (i = 0; new_argv[i]; ++i) | |
254 | fprintf (stderr, "new_argv[%d] = \"%s\"\n", i, new_argv[i]); | |
255 | fflush (stderr); | |
256 | } | |
257 | ||
b80864fb | 258 | #ifdef SIGTTOU |
a9fa9f7d DJ |
259 | signal (SIGTTOU, SIG_DFL); |
260 | signal (SIGTTIN, SIG_DFL); | |
b80864fb | 261 | #endif |
a9fa9f7d | 262 | |
ccd213ac | 263 | signal_pid = create_inferior (new_argv[0], new_argv); |
0d62e5e8 | 264 | |
c588c53c MS |
265 | /* FIXME: we don't actually know at this point that the create |
266 | actually succeeded. We won't know that until we wait. */ | |
a1928bad | 267 | fprintf (stderr, "Process %s created; pid = %ld\n", argv[0], |
a9fa9f7d | 268 | signal_pid); |
b80864fb | 269 | fflush (stderr); |
a9fa9f7d | 270 | |
b80864fb | 271 | #ifdef SIGTTOU |
a9fa9f7d DJ |
272 | signal (SIGTTOU, SIG_IGN); |
273 | signal (SIGTTIN, SIG_IGN); | |
290fadea RS |
274 | terminal_fd = fileno (stderr); |
275 | old_foreground_pgrp = tcgetpgrp (terminal_fd); | |
276 | tcsetpgrp (terminal_fd, signal_pid); | |
277 | atexit (restore_old_foreground_pgrp); | |
b80864fb | 278 | #endif |
c906108c | 279 | |
ccd213ac DJ |
280 | if (wrapper_argv != NULL) |
281 | { | |
282 | struct thread_resume resume_info; | |
ccd213ac | 283 | |
95954743 | 284 | resume_info.thread = pid_to_ptid (signal_pid); |
bd99dc85 | 285 | resume_info.kind = resume_continue; |
ccd213ac | 286 | resume_info.sig = 0; |
ccd213ac | 287 | |
32fcada3 | 288 | mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
bd99dc85 | 289 | |
5b1c542e PA |
290 | if (last_status.kind != TARGET_WAITKIND_STOPPED) |
291 | return signal_pid; | |
ccd213ac DJ |
292 | |
293 | do | |
294 | { | |
2bd7c093 | 295 | (*the_target->resume) (&resume_info, 1); |
ccd213ac | 296 | |
95954743 | 297 | mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
5b1c542e PA |
298 | if (last_status.kind != TARGET_WAITKIND_STOPPED) |
299 | return signal_pid; | |
d20a8ad9 PA |
300 | |
301 | current_inferior->last_resume_kind = resume_stop; | |
302 | current_inferior->last_status = last_status; | |
ccd213ac | 303 | } |
5b1c542e | 304 | while (last_status.value.sig != TARGET_SIGNAL_TRAP); |
ccd213ac | 305 | |
d20a8ad9 PA |
306 | current_inferior->last_resume_kind = resume_stop; |
307 | current_inferior->last_status = last_status; | |
5b1c542e | 308 | return signal_pid; |
ccd213ac DJ |
309 | } |
310 | ||
5b1c542e PA |
311 | /* Wait till we are at 1st instruction in program, return new pid |
312 | (assuming success). */ | |
95954743 | 313 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
5b1c542e | 314 | |
d20a8ad9 PA |
315 | if (last_status.kind != TARGET_WAITKIND_EXITED |
316 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
317 | { | |
318 | current_inferior->last_resume_kind = resume_stop; | |
319 | current_inferior->last_status = last_status; | |
320 | } | |
321 | ||
5b1c542e | 322 | return signal_pid; |
c906108c SS |
323 | } |
324 | ||
45b7b345 | 325 | static int |
5b1c542e | 326 | attach_inferior (int pid) |
45b7b345 DJ |
327 | { |
328 | /* myattach should return -1 if attaching is unsupported, | |
329 | 0 if it succeeded, and call error() otherwise. */ | |
a9fa9f7d | 330 | |
45b7b345 DJ |
331 | if (myattach (pid) != 0) |
332 | return -1; | |
333 | ||
6910d122 | 334 | fprintf (stderr, "Attached; pid = %d\n", pid); |
b80864fb | 335 | fflush (stderr); |
6910d122 | 336 | |
a9fa9f7d DJ |
337 | /* FIXME - It may be that we should get the SIGNAL_PID from the |
338 | attach function, so that it can be the main thread instead of | |
339 | whichever we were told to attach to. */ | |
340 | signal_pid = pid; | |
341 | ||
bd99dc85 PA |
342 | if (!non_stop) |
343 | { | |
95954743 | 344 | last_ptid = mywait (pid_to_ptid (pid), &last_status, 0, 0); |
bd99dc85 PA |
345 | |
346 | /* GDB knows to ignore the first SIGSTOP after attaching to a running | |
347 | process using the "attach" command, but this is different; it's | |
348 | just using "target remote". Pretend it's just starting up. */ | |
349 | if (last_status.kind == TARGET_WAITKIND_STOPPED | |
350 | && last_status.value.sig == TARGET_SIGNAL_STOP) | |
351 | last_status.value.sig = TARGET_SIGNAL_TRAP; | |
d20a8ad9 PA |
352 | |
353 | current_inferior->last_resume_kind = resume_stop; | |
354 | current_inferior->last_status = last_status; | |
bd99dc85 | 355 | } |
9db87ebd | 356 | |
45b7b345 DJ |
357 | return 0; |
358 | } | |
359 | ||
c906108c | 360 | extern int remote_debug; |
ce3a066d | 361 | |
0876f84a DJ |
362 | /* Decode a qXfer read request. Return 0 if everything looks OK, |
363 | or -1 otherwise. */ | |
364 | ||
365 | static int | |
d08aafef | 366 | decode_xfer_read (char *buf, CORE_ADDR *ofs, unsigned int *len) |
0876f84a | 367 | { |
d08aafef PA |
368 | /* After the read marker and annex, qXfer looks like a |
369 | traditional 'm' packet. */ | |
370 | decode_m_packet (buf, ofs, len); | |
371 | ||
372 | return 0; | |
373 | } | |
374 | ||
375 | static int | |
376 | decode_xfer (char *buf, char **object, char **rw, char **annex, char **offset) | |
377 | { | |
378 | /* Extract and NUL-terminate the object. */ | |
379 | *object = buf; | |
380 | while (*buf && *buf != ':') | |
381 | buf++; | |
382 | if (*buf == '\0') | |
383 | return -1; | |
384 | *buf++ = 0; | |
385 | ||
386 | /* Extract and NUL-terminate the read/write action. */ | |
387 | *rw = buf; | |
388 | while (*buf && *buf != ':') | |
389 | buf++; | |
390 | if (*buf == '\0') | |
391 | return -1; | |
392 | *buf++ = 0; | |
393 | ||
0876f84a DJ |
394 | /* Extract and NUL-terminate the annex. */ |
395 | *annex = buf; | |
396 | while (*buf && *buf != ':') | |
397 | buf++; | |
398 | if (*buf == '\0') | |
399 | return -1; | |
400 | *buf++ = 0; | |
401 | ||
d08aafef | 402 | *offset = buf; |
0876f84a DJ |
403 | return 0; |
404 | } | |
405 | ||
406 | /* Write the response to a successful qXfer read. Returns the | |
407 | length of the (binary) data stored in BUF, corresponding | |
408 | to as much of DATA/LEN as we could fit. IS_MORE controls | |
409 | the first character of the response. */ | |
410 | static int | |
23181151 | 411 | write_qxfer_response (char *buf, const void *data, int len, int is_more) |
0876f84a DJ |
412 | { |
413 | int out_len; | |
414 | ||
415 | if (is_more) | |
416 | buf[0] = 'm'; | |
417 | else | |
418 | buf[0] = 'l'; | |
419 | ||
420 | return remote_escape_output (data, len, (unsigned char *) buf + 1, &out_len, | |
421 | PBUFSIZ - 2) + 1; | |
422 | } | |
423 | ||
89be2091 | 424 | /* Handle all of the extended 'Q' packets. */ |
ae1ada35 DE |
425 | |
426 | static void | |
89be2091 DJ |
427 | handle_general_set (char *own_buf) |
428 | { | |
429 | if (strncmp ("QPassSignals:", own_buf, strlen ("QPassSignals:")) == 0) | |
430 | { | |
431 | int numsigs = (int) TARGET_SIGNAL_LAST, i; | |
432 | const char *p = own_buf + strlen ("QPassSignals:"); | |
433 | CORE_ADDR cursig; | |
434 | ||
435 | p = decode_address_to_semicolon (&cursig, p); | |
436 | for (i = 0; i < numsigs; i++) | |
437 | { | |
438 | if (i == cursig) | |
439 | { | |
440 | pass_signals[i] = 1; | |
441 | if (*p == '\0') | |
442 | /* Keep looping, to clear the remaining signals. */ | |
443 | cursig = -1; | |
444 | else | |
445 | p = decode_address_to_semicolon (&cursig, p); | |
446 | } | |
447 | else | |
448 | pass_signals[i] = 0; | |
449 | } | |
450 | strcpy (own_buf, "OK"); | |
451 | return; | |
452 | } | |
453 | ||
a6f3e723 SL |
454 | if (strcmp (own_buf, "QStartNoAckMode") == 0) |
455 | { | |
456 | if (remote_debug) | |
457 | { | |
458 | fprintf (stderr, "[noack mode enabled]\n"); | |
459 | fflush (stderr); | |
460 | } | |
461 | ||
462 | noack_mode = 1; | |
463 | write_ok (own_buf); | |
464 | return; | |
465 | } | |
466 | ||
bd99dc85 PA |
467 | if (strncmp (own_buf, "QNonStop:", 9) == 0) |
468 | { | |
469 | char *mode = own_buf + 9; | |
470 | int req = -1; | |
471 | char *req_str; | |
472 | ||
473 | if (strcmp (mode, "0") == 0) | |
474 | req = 0; | |
475 | else if (strcmp (mode, "1") == 0) | |
476 | req = 1; | |
477 | else | |
478 | { | |
479 | /* We don't know what this mode is, so complain to | |
480 | GDB. */ | |
481 | fprintf (stderr, "Unknown non-stop mode requested: %s\n", | |
482 | own_buf); | |
483 | write_enn (own_buf); | |
484 | return; | |
485 | } | |
486 | ||
487 | req_str = req ? "non-stop" : "all-stop"; | |
488 | if (start_non_stop (req) != 0) | |
489 | { | |
490 | fprintf (stderr, "Setting %s mode failed\n", req_str); | |
491 | write_enn (own_buf); | |
492 | return; | |
493 | } | |
494 | ||
495 | non_stop = req; | |
496 | ||
497 | if (remote_debug) | |
498 | fprintf (stderr, "[%s mode enabled]\n", req_str); | |
499 | ||
500 | write_ok (own_buf); | |
501 | return; | |
502 | } | |
503 | ||
03583c20 UW |
504 | if (strncmp ("QDisableRandomization:", own_buf, |
505 | strlen ("QDisableRandomization:")) == 0) | |
506 | { | |
507 | char *packet = own_buf + strlen ("QDisableRandomization:"); | |
508 | ULONGEST setting; | |
509 | ||
510 | unpack_varlen_hex (packet, &setting); | |
511 | disable_randomization = setting; | |
512 | ||
513 | if (remote_debug) | |
514 | { | |
515 | if (disable_randomization) | |
516 | fprintf (stderr, "[address space randomization disabled]\n"); | |
517 | else | |
518 | fprintf (stderr, "[address space randomization enabled]\n"); | |
519 | } | |
520 | ||
521 | write_ok (own_buf); | |
522 | return; | |
523 | } | |
524 | ||
219f2f23 PA |
525 | if (target_supports_tracepoints () |
526 | && handle_tracepoint_general_set (own_buf)) | |
527 | return; | |
528 | ||
89be2091 DJ |
529 | /* Otherwise we didn't know what packet it was. Say we didn't |
530 | understand it. */ | |
531 | own_buf[0] = 0; | |
532 | } | |
533 | ||
23181151 | 534 | static const char * |
fb1e4ffc | 535 | get_features_xml (const char *annex) |
23181151 | 536 | { |
9b4b61c8 UW |
537 | /* gdbserver_xmltarget defines what to return when looking |
538 | for the "target.xml" file. Its contents can either be | |
539 | verbatim XML code (prefixed with a '@') or else the name | |
540 | of the actual XML file to be used in place of "target.xml". | |
fb1e4ffc | 541 | |
9b4b61c8 UW |
542 | This variable is set up from the auto-generated |
543 | init_registers_... routine for the current target. */ | |
fb1e4ffc | 544 | |
9b4b61c8 | 545 | if (gdbserver_xmltarget |
221c031f | 546 | && strcmp (annex, "target.xml") == 0) |
23181151 | 547 | { |
9b4b61c8 UW |
548 | if (*gdbserver_xmltarget == '@') |
549 | return gdbserver_xmltarget + 1; | |
23181151 | 550 | else |
9b4b61c8 | 551 | annex = gdbserver_xmltarget; |
23181151 DJ |
552 | } |
553 | ||
9b4b61c8 UW |
554 | #ifdef USE_XML |
555 | { | |
556 | extern const char *const xml_builtin[][2]; | |
557 | int i; | |
558 | ||
559 | /* Look for the annex. */ | |
560 | for (i = 0; xml_builtin[i][0] != NULL; i++) | |
561 | if (strcmp (annex, xml_builtin[i][0]) == 0) | |
562 | break; | |
563 | ||
564 | if (xml_builtin[i][0] != NULL) | |
565 | return xml_builtin[i][1]; | |
566 | } | |
567 | #endif | |
568 | ||
569 | return NULL; | |
23181151 DJ |
570 | } |
571 | ||
c74d0ad8 DJ |
572 | void |
573 | monitor_show_help (void) | |
574 | { | |
575 | monitor_output ("The following monitor commands are supported:\n"); | |
576 | monitor_output (" set debug <0|1>\n"); | |
1b3f6016 | 577 | monitor_output (" Enable general debugging messages\n"); |
aa5ca48f DE |
578 | monitor_output (" set debug-hw-points <0|1>\n"); |
579 | monitor_output (" Enable h/w breakpoint/watchpoint debugging messages\n"); | |
c74d0ad8 DJ |
580 | monitor_output (" set remote-debug <0|1>\n"); |
581 | monitor_output (" Enable remote protocol debugging messages\n"); | |
ecd7ecbc DJ |
582 | monitor_output (" exit\n"); |
583 | monitor_output (" Quit GDBserver\n"); | |
c74d0ad8 DJ |
584 | } |
585 | ||
764880b7 PA |
586 | /* Read trace frame or inferior memory. Returns the number of bytes |
587 | actually read, zero when no further transfer is possible, and -1 on | |
588 | error. Return of a positive value smaller than LEN does not | |
589 | indicate there's no more to be read, only the end of the transfer. | |
590 | E.g., when GDB reads memory from a traceframe, a first request may | |
591 | be served from a memory block that does not cover the whole request | |
592 | length. A following request gets the rest served from either | |
593 | another block (of the same traceframe) or from the read-only | |
594 | regions. */ | |
219f2f23 PA |
595 | |
596 | static int | |
90d74c30 | 597 | gdb_read_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) |
219f2f23 | 598 | { |
764880b7 | 599 | int res; |
90d74c30 | 600 | |
219f2f23 PA |
601 | if (current_traceframe >= 0) |
602 | { | |
603 | ULONGEST nbytes; | |
604 | ULONGEST length = len; | |
605 | ||
606 | if (traceframe_read_mem (current_traceframe, | |
607 | memaddr, myaddr, len, &nbytes)) | |
608 | return EIO; | |
609 | /* Data read from trace buffer, we're done. */ | |
764880b7 PA |
610 | if (nbytes > 0) |
611 | return nbytes; | |
219f2f23 | 612 | if (!in_readonly_region (memaddr, length)) |
764880b7 | 613 | return -1; |
219f2f23 PA |
614 | /* Otherwise we have a valid readonly case, fall through. */ |
615 | /* (assume no half-trace half-real blocks for now) */ | |
616 | } | |
617 | ||
764880b7 PA |
618 | res = prepare_to_access_memory (); |
619 | if (res == 0) | |
90d74c30 | 620 | { |
764880b7 | 621 | res = read_inferior_memory (memaddr, myaddr, len); |
0146f85b | 622 | done_accessing_memory (); |
90d74c30 | 623 | |
764880b7 PA |
624 | return res == 0 ? len : -1; |
625 | } | |
626 | else | |
627 | return -1; | |
219f2f23 PA |
628 | } |
629 | ||
630 | /* Write trace frame or inferior memory. Actually, writing to trace | |
631 | frames is forbidden. */ | |
632 | ||
633 | static int | |
90d74c30 | 634 | gdb_write_memory (CORE_ADDR memaddr, const unsigned char *myaddr, int len) |
219f2f23 PA |
635 | { |
636 | if (current_traceframe >= 0) | |
637 | return EIO; | |
638 | else | |
90d74c30 PA |
639 | { |
640 | int ret; | |
641 | ||
642 | ret = prepare_to_access_memory (); | |
643 | if (ret == 0) | |
644 | { | |
645 | ret = write_inferior_memory (memaddr, myaddr, len); | |
0146f85b | 646 | done_accessing_memory (); |
90d74c30 PA |
647 | } |
648 | return ret; | |
649 | } | |
219f2f23 PA |
650 | } |
651 | ||
08388c79 DE |
652 | /* Subroutine of handle_search_memory to simplify it. */ |
653 | ||
654 | static int | |
655 | handle_search_memory_1 (CORE_ADDR start_addr, CORE_ADDR search_space_len, | |
656 | gdb_byte *pattern, unsigned pattern_len, | |
657 | gdb_byte *search_buf, | |
658 | unsigned chunk_size, unsigned search_buf_size, | |
659 | CORE_ADDR *found_addrp) | |
660 | { | |
661 | /* Prime the search buffer. */ | |
662 | ||
764880b7 PA |
663 | if (gdb_read_memory (start_addr, search_buf, search_buf_size) |
664 | != search_buf_size) | |
08388c79 | 665 | { |
5e1471f5 | 666 | warning ("Unable to access target memory at 0x%lx, halting search.", |
08388c79 DE |
667 | (long) start_addr); |
668 | return -1; | |
669 | } | |
670 | ||
671 | /* Perform the search. | |
672 | ||
673 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
674 | When we've scanned N bytes we copy the trailing bytes to the start and | |
675 | read in another N bytes. */ | |
676 | ||
677 | while (search_space_len >= pattern_len) | |
678 | { | |
679 | gdb_byte *found_ptr; | |
680 | unsigned nr_search_bytes = (search_space_len < search_buf_size | |
681 | ? search_space_len | |
682 | : search_buf_size); | |
683 | ||
684 | found_ptr = memmem (search_buf, nr_search_bytes, pattern, pattern_len); | |
685 | ||
686 | if (found_ptr != NULL) | |
687 | { | |
688 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
689 | *found_addrp = found_addr; | |
690 | return 1; | |
691 | } | |
692 | ||
693 | /* Not found in this chunk, skip to next chunk. */ | |
694 | ||
695 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
696 | if (search_space_len >= chunk_size) | |
697 | search_space_len -= chunk_size; | |
698 | else | |
699 | search_space_len = 0; | |
700 | ||
701 | if (search_space_len >= pattern_len) | |
702 | { | |
703 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 704 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
705 | int nr_to_read; |
706 | ||
707 | /* Copy the trailing part of the previous iteration to the front | |
708 | of the buffer for the next iteration. */ | |
709 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
710 | ||
711 | nr_to_read = (search_space_len - keep_len < chunk_size | |
712 | ? search_space_len - keep_len | |
713 | : chunk_size); | |
714 | ||
90d74c30 | 715 | if (gdb_read_memory (read_addr, search_buf + keep_len, |
764880b7 | 716 | nr_to_read) != search_buf_size) |
08388c79 | 717 | { |
493e2a69 MS |
718 | warning ("Unable to access target memory " |
719 | "at 0x%lx, halting search.", | |
08388c79 DE |
720 | (long) read_addr); |
721 | return -1; | |
722 | } | |
723 | ||
724 | start_addr += chunk_size; | |
725 | } | |
726 | } | |
727 | ||
728 | /* Not found. */ | |
729 | ||
730 | return 0; | |
731 | } | |
732 | ||
733 | /* Handle qSearch:memory packets. */ | |
734 | ||
735 | static void | |
736 | handle_search_memory (char *own_buf, int packet_len) | |
737 | { | |
738 | CORE_ADDR start_addr; | |
739 | CORE_ADDR search_space_len; | |
740 | gdb_byte *pattern; | |
741 | unsigned int pattern_len; | |
742 | /* NOTE: also defined in find.c testcase. */ | |
743 | #define SEARCH_CHUNK_SIZE 16000 | |
744 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
745 | /* Buffer to hold memory contents for searching. */ | |
746 | gdb_byte *search_buf; | |
747 | unsigned search_buf_size; | |
748 | int found; | |
749 | CORE_ADDR found_addr; | |
750 | int cmd_name_len = sizeof ("qSearch:memory:") - 1; | |
751 | ||
aef93bd7 | 752 | pattern = malloc (packet_len); |
08388c79 DE |
753 | if (pattern == NULL) |
754 | { | |
5e1471f5 | 755 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
756 | strcpy (own_buf, "E00"); |
757 | return; | |
758 | } | |
759 | if (decode_search_memory_packet (own_buf + cmd_name_len, | |
760 | packet_len - cmd_name_len, | |
761 | &start_addr, &search_space_len, | |
762 | pattern, &pattern_len) < 0) | |
763 | { | |
764 | free (pattern); | |
5e1471f5 | 765 | error ("Error in parsing qSearch:memory packet"); |
08388c79 DE |
766 | strcpy (own_buf, "E00"); |
767 | return; | |
768 | } | |
769 | ||
770 | search_buf_size = chunk_size + pattern_len - 1; | |
771 | ||
772 | /* No point in trying to allocate a buffer larger than the search space. */ | |
773 | if (search_space_len < search_buf_size) | |
774 | search_buf_size = search_space_len; | |
775 | ||
aef93bd7 | 776 | search_buf = malloc (search_buf_size); |
08388c79 DE |
777 | if (search_buf == NULL) |
778 | { | |
779 | free (pattern); | |
5e1471f5 | 780 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
781 | strcpy (own_buf, "E00"); |
782 | return; | |
783 | } | |
784 | ||
785 | found = handle_search_memory_1 (start_addr, search_space_len, | |
786 | pattern, pattern_len, | |
787 | search_buf, chunk_size, search_buf_size, | |
788 | &found_addr); | |
789 | ||
790 | if (found > 0) | |
791 | sprintf (own_buf, "1,%lx", (long) found_addr); | |
792 | else if (found == 0) | |
793 | strcpy (own_buf, "0"); | |
794 | else | |
795 | strcpy (own_buf, "E00"); | |
796 | ||
797 | free (search_buf); | |
798 | free (pattern); | |
799 | } | |
800 | ||
2d717e4f DJ |
801 | #define require_running(BUF) \ |
802 | if (!target_running ()) \ | |
803 | { \ | |
804 | write_enn (BUF); \ | |
805 | return; \ | |
806 | } | |
807 | ||
cdbfd419 PP |
808 | /* Handle monitor commands not handled by target-specific handlers. */ |
809 | ||
810 | static void | |
811 | handle_monitor_command (char *mon) | |
812 | { | |
813 | if (strcmp (mon, "set debug 1") == 0) | |
814 | { | |
815 | debug_threads = 1; | |
816 | monitor_output ("Debug output enabled.\n"); | |
817 | } | |
818 | else if (strcmp (mon, "set debug 0") == 0) | |
819 | { | |
820 | debug_threads = 0; | |
821 | monitor_output ("Debug output disabled.\n"); | |
822 | } | |
823 | else if (strcmp (mon, "set debug-hw-points 1") == 0) | |
824 | { | |
825 | debug_hw_points = 1; | |
826 | monitor_output ("H/W point debugging output enabled.\n"); | |
827 | } | |
828 | else if (strcmp (mon, "set debug-hw-points 0") == 0) | |
829 | { | |
830 | debug_hw_points = 0; | |
831 | monitor_output ("H/W point debugging output disabled.\n"); | |
832 | } | |
833 | else if (strcmp (mon, "set remote-debug 1") == 0) | |
834 | { | |
835 | remote_debug = 1; | |
836 | monitor_output ("Protocol debug output enabled.\n"); | |
837 | } | |
838 | else if (strcmp (mon, "set remote-debug 0") == 0) | |
839 | { | |
840 | remote_debug = 0; | |
841 | monitor_output ("Protocol debug output disabled.\n"); | |
842 | } | |
843 | else if (strcmp (mon, "help") == 0) | |
844 | monitor_show_help (); | |
845 | else if (strcmp (mon, "exit") == 0) | |
846 | exit_requested = 1; | |
847 | else | |
848 | { | |
849 | monitor_output ("Unknown monitor command.\n\n"); | |
850 | monitor_show_help (); | |
851 | write_enn (own_buf); | |
852 | } | |
853 | } | |
854 | ||
d08aafef PA |
855 | /* Associates a callback with each supported qXfer'able object. */ |
856 | ||
857 | struct qxfer | |
858 | { | |
859 | /* The object this handler handles. */ | |
860 | const char *object; | |
861 | ||
862 | /* Request that the target transfer up to LEN 8-bit bytes of the | |
863 | target's OBJECT. The OFFSET, for a seekable object, specifies | |
864 | the starting point. The ANNEX can be used to provide additional | |
865 | data-specific information to the target. | |
866 | ||
867 | Return the number of bytes actually transfered, zero when no | |
868 | further transfer is possible, -1 on error, and -2 when the | |
869 | transfer is not supported. Return of a positive value smaller | |
870 | than LEN does not indicate the end of the object, only the end of | |
871 | the transfer. | |
872 | ||
873 | One, and only one, of readbuf or writebuf must be non-NULL. */ | |
874 | int (*xfer) (const char *annex, | |
875 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
876 | ULONGEST offset, LONGEST len); | |
877 | }; | |
878 | ||
879 | /* Handle qXfer:auxv:read. */ | |
880 | ||
881 | static int | |
882 | handle_qxfer_auxv (const char *annex, | |
883 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
884 | ULONGEST offset, LONGEST len) | |
885 | { | |
886 | if (the_target->read_auxv == NULL || writebuf != NULL) | |
887 | return -2; | |
888 | ||
889 | if (annex[0] != '\0' || !target_running ()) | |
890 | return -1; | |
891 | ||
892 | return (*the_target->read_auxv) (offset, readbuf, len); | |
893 | } | |
894 | ||
895 | /* Handle qXfer:features:read. */ | |
896 | ||
897 | static int | |
898 | handle_qxfer_features (const char *annex, | |
899 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
900 | ULONGEST offset, LONGEST len) | |
901 | { | |
902 | const char *document; | |
903 | size_t total_len; | |
904 | ||
905 | if (writebuf != NULL) | |
906 | return -2; | |
907 | ||
908 | if (!target_running ()) | |
909 | return -1; | |
910 | ||
911 | /* Grab the correct annex. */ | |
912 | document = get_features_xml (annex); | |
913 | if (document == NULL) | |
914 | return -1; | |
915 | ||
916 | total_len = strlen (document); | |
917 | ||
918 | if (offset > total_len) | |
919 | return -1; | |
920 | ||
921 | if (offset + len > total_len) | |
922 | len = total_len - offset; | |
923 | ||
924 | memcpy (readbuf, document + offset, len); | |
925 | return len; | |
926 | } | |
927 | ||
928 | /* Handle qXfer:libraries:read. */ | |
929 | ||
930 | static int | |
931 | handle_qxfer_libraries (const char *annex, | |
932 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
933 | ULONGEST offset, LONGEST len) | |
934 | { | |
935 | unsigned int total_len; | |
936 | char *document, *p; | |
937 | struct inferior_list_entry *dll_ptr; | |
938 | ||
939 | if (writebuf != NULL) | |
940 | return -2; | |
941 | ||
942 | if (annex[0] != '\0' || !target_running ()) | |
943 | return -1; | |
944 | ||
2268b414 JK |
945 | /* Do not confuse this packet with qXfer:libraries-svr4:read. */ |
946 | if (the_target->qxfer_libraries_svr4 != NULL) | |
947 | return 0; | |
948 | ||
d08aafef PA |
949 | /* Over-estimate the necessary memory. Assume that every character |
950 | in the library name must be escaped. */ | |
951 | total_len = 64; | |
952 | for (dll_ptr = all_dlls.head; dll_ptr != NULL; dll_ptr = dll_ptr->next) | |
953 | total_len += 128 + 6 * strlen (((struct dll_info *) dll_ptr)->name); | |
954 | ||
955 | document = malloc (total_len); | |
956 | if (document == NULL) | |
957 | return -1; | |
958 | ||
959 | strcpy (document, "<library-list>\n"); | |
960 | p = document + strlen (document); | |
961 | ||
962 | for (dll_ptr = all_dlls.head; dll_ptr != NULL; dll_ptr = dll_ptr->next) | |
963 | { | |
964 | struct dll_info *dll = (struct dll_info *) dll_ptr; | |
965 | char *name; | |
966 | ||
967 | strcpy (p, " <library name=\""); | |
968 | p = p + strlen (p); | |
969 | name = xml_escape_text (dll->name); | |
970 | strcpy (p, name); | |
971 | free (name); | |
972 | p = p + strlen (p); | |
973 | strcpy (p, "\"><segment address=\""); | |
974 | p = p + strlen (p); | |
975 | sprintf (p, "0x%lx", (long) dll->base_addr); | |
976 | p = p + strlen (p); | |
977 | strcpy (p, "\"/></library>\n"); | |
978 | p = p + strlen (p); | |
979 | } | |
980 | ||
981 | strcpy (p, "</library-list>\n"); | |
982 | ||
983 | total_len = strlen (document); | |
984 | ||
985 | if (offset > total_len) | |
986 | { | |
987 | free (document); | |
988 | return -1; | |
989 | } | |
990 | ||
991 | if (offset + len > total_len) | |
992 | len = total_len - offset; | |
993 | ||
994 | memcpy (readbuf, document + offset, len); | |
995 | free (document); | |
996 | return len; | |
997 | } | |
998 | ||
2268b414 JK |
999 | /* Handle qXfer:libraries-svr4:read. */ |
1000 | ||
1001 | static int | |
1002 | handle_qxfer_libraries_svr4 (const char *annex, | |
1003 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1004 | ULONGEST offset, LONGEST len) | |
1005 | { | |
1006 | if (writebuf != NULL) | |
1007 | return -2; | |
1008 | ||
1009 | if (annex[0] != '\0' || !target_running () | |
1010 | || the_target->qxfer_libraries_svr4 == NULL) | |
1011 | return -1; | |
1012 | ||
1013 | return the_target->qxfer_libraries_svr4 (annex, readbuf, writebuf, offset, len); | |
1014 | } | |
1015 | ||
d08aafef PA |
1016 | /* Handle qXfer:osadata:read. */ |
1017 | ||
1018 | static int | |
1019 | handle_qxfer_osdata (const char *annex, | |
1020 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1021 | ULONGEST offset, LONGEST len) | |
1022 | { | |
1023 | if (the_target->qxfer_osdata == NULL || writebuf != NULL) | |
1024 | return -2; | |
1025 | ||
1026 | return (*the_target->qxfer_osdata) (annex, readbuf, NULL, offset, len); | |
1027 | } | |
1028 | ||
1029 | /* Handle qXfer:siginfo:read and qXfer:siginfo:write. */ | |
1030 | ||
1031 | static int | |
1032 | handle_qxfer_siginfo (const char *annex, | |
1033 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1034 | ULONGEST offset, LONGEST len) | |
1035 | { | |
1036 | if (the_target->qxfer_siginfo == NULL) | |
1037 | return -2; | |
1038 | ||
1039 | if (annex[0] != '\0' || !target_running ()) | |
1040 | return -1; | |
1041 | ||
1042 | return (*the_target->qxfer_siginfo) (annex, readbuf, writebuf, offset, len); | |
1043 | } | |
1044 | ||
1045 | /* Handle qXfer:spu:read and qXfer:spu:write. */ | |
1046 | ||
1047 | static int | |
1048 | handle_qxfer_spu (const char *annex, | |
1049 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1050 | ULONGEST offset, LONGEST len) | |
1051 | { | |
1052 | if (the_target->qxfer_spu == NULL) | |
1053 | return -2; | |
1054 | ||
1055 | if (!target_running ()) | |
1056 | return -1; | |
1057 | ||
1058 | return (*the_target->qxfer_spu) (annex, readbuf, writebuf, offset, len); | |
1059 | } | |
1060 | ||
1061 | /* Handle qXfer:statictrace:read. */ | |
1062 | ||
1063 | static int | |
1064 | handle_qxfer_statictrace (const char *annex, | |
1065 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1066 | ULONGEST offset, LONGEST len) | |
1067 | { | |
1068 | ULONGEST nbytes; | |
1069 | ||
1070 | if (writebuf != NULL) | |
1071 | return -2; | |
1072 | ||
1073 | if (annex[0] != '\0' || !target_running () || current_traceframe == -1) | |
1074 | return -1; | |
1075 | ||
1076 | if (traceframe_read_sdata (current_traceframe, offset, | |
1077 | readbuf, len, &nbytes)) | |
1078 | return -1; | |
1079 | return nbytes; | |
1080 | } | |
1081 | ||
1082 | /* Helper for handle_qxfer_threads. */ | |
1083 | ||
dc146f7c | 1084 | static void |
d08aafef | 1085 | handle_qxfer_threads_proper (struct buffer *buffer) |
dc146f7c VP |
1086 | { |
1087 | struct inferior_list_entry *thread; | |
1088 | ||
1089 | buffer_grow_str (buffer, "<threads>\n"); | |
1090 | ||
1091 | for (thread = all_threads.head; thread; thread = thread->next) | |
1092 | { | |
1093 | ptid_t ptid = thread_to_gdb_id ((struct thread_info *)thread); | |
1094 | char ptid_s[100]; | |
1095 | int core = -1; | |
1096 | char core_s[21]; | |
1097 | ||
1098 | write_ptid (ptid_s, ptid); | |
1099 | ||
1100 | if (the_target->core_of_thread) | |
1101 | core = (*the_target->core_of_thread) (ptid); | |
1102 | ||
1103 | if (core != -1) | |
1104 | { | |
1105 | sprintf (core_s, "%d", core); | |
1106 | buffer_xml_printf (buffer, "<thread id=\"%s\" core=\"%s\"/>\n", | |
1107 | ptid_s, core_s); | |
1108 | } | |
1109 | else | |
1110 | { | |
1111 | buffer_xml_printf (buffer, "<thread id=\"%s\"/>\n", | |
1112 | ptid_s); | |
1113 | } | |
1114 | } | |
1115 | ||
1116 | buffer_grow_str0 (buffer, "</threads>\n"); | |
1117 | } | |
1118 | ||
d08aafef PA |
1119 | /* Handle qXfer:threads:read. */ |
1120 | ||
dc146f7c | 1121 | static int |
d08aafef PA |
1122 | handle_qxfer_threads (const char *annex, |
1123 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1124 | ULONGEST offset, LONGEST len) | |
dc146f7c VP |
1125 | { |
1126 | static char *result = 0; | |
1127 | static unsigned int result_length = 0; | |
1128 | ||
d08aafef PA |
1129 | if (writebuf != NULL) |
1130 | return -2; | |
1131 | ||
1132 | if (!target_running () || annex[0] != '\0') | |
1133 | return -1; | |
dc146f7c VP |
1134 | |
1135 | if (offset == 0) | |
1136 | { | |
1137 | struct buffer buffer; | |
1138 | /* When asked for data at offset 0, generate everything and store into | |
1139 | 'result'. Successive reads will be served off 'result'. */ | |
1140 | if (result) | |
1141 | free (result); | |
1142 | ||
1143 | buffer_init (&buffer); | |
1144 | ||
d08aafef | 1145 | handle_qxfer_threads_proper (&buffer); |
dc146f7c VP |
1146 | |
1147 | result = buffer_finish (&buffer); | |
1148 | result_length = strlen (result); | |
1149 | buffer_free (&buffer); | |
1150 | } | |
1151 | ||
1152 | if (offset >= result_length) | |
1153 | { | |
1154 | /* We're out of data. */ | |
1155 | free (result); | |
1156 | result = NULL; | |
1157 | result_length = 0; | |
1158 | return 0; | |
1159 | } | |
1160 | ||
d08aafef PA |
1161 | if (len > result_length - offset) |
1162 | len = result_length - offset; | |
1163 | ||
1164 | memcpy (readbuf, result + offset, len); | |
1165 | ||
1166 | return len; | |
1167 | } | |
1168 | ||
b3b9301e PA |
1169 | /* Handle qXfer:traceframe-info:read. */ |
1170 | ||
1171 | static int | |
1172 | handle_qxfer_traceframe_info (const char *annex, | |
1173 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1174 | ULONGEST offset, LONGEST len) | |
1175 | { | |
1176 | static char *result = 0; | |
1177 | static unsigned int result_length = 0; | |
1178 | ||
1179 | if (writebuf != NULL) | |
1180 | return -2; | |
1181 | ||
1182 | if (!target_running () || annex[0] != '\0' || current_traceframe == -1) | |
1183 | return -1; | |
1184 | ||
1185 | if (offset == 0) | |
1186 | { | |
1187 | struct buffer buffer; | |
1188 | ||
1189 | /* When asked for data at offset 0, generate everything and | |
1190 | store into 'result'. Successive reads will be served off | |
1191 | 'result'. */ | |
1192 | free (result); | |
1193 | ||
1194 | buffer_init (&buffer); | |
1195 | ||
1196 | traceframe_read_info (current_traceframe, &buffer); | |
1197 | ||
1198 | result = buffer_finish (&buffer); | |
1199 | result_length = strlen (result); | |
1200 | buffer_free (&buffer); | |
1201 | } | |
1202 | ||
1203 | if (offset >= result_length) | |
1204 | { | |
1205 | /* We're out of data. */ | |
1206 | free (result); | |
1207 | result = NULL; | |
1208 | result_length = 0; | |
1209 | return 0; | |
1210 | } | |
1211 | ||
1212 | if (len > result_length - offset) | |
1213 | len = result_length - offset; | |
1214 | ||
1215 | memcpy (readbuf, result + offset, len); | |
1216 | return len; | |
1217 | } | |
1218 | ||
78d85199 YQ |
1219 | /* Handle qXfer:fdpic:read. */ |
1220 | ||
1221 | static int | |
1222 | handle_qxfer_fdpic (const char *annex, gdb_byte *readbuf, | |
1223 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1224 | { | |
1225 | if (the_target->read_loadmap == NULL) | |
1226 | return -2; | |
1227 | ||
1228 | if (!target_running ()) | |
1229 | return -1; | |
1230 | ||
1231 | return (*the_target->read_loadmap) (annex, offset, readbuf, len); | |
1232 | } | |
1233 | ||
d08aafef PA |
1234 | static const struct qxfer qxfer_packets[] = |
1235 | { | |
1236 | { "auxv", handle_qxfer_auxv }, | |
78d85199 | 1237 | { "fdpic", handle_qxfer_fdpic}, |
d08aafef PA |
1238 | { "features", handle_qxfer_features }, |
1239 | { "libraries", handle_qxfer_libraries }, | |
2268b414 | 1240 | { "libraries-svr4", handle_qxfer_libraries_svr4 }, |
d08aafef PA |
1241 | { "osdata", handle_qxfer_osdata }, |
1242 | { "siginfo", handle_qxfer_siginfo }, | |
1243 | { "spu", handle_qxfer_spu }, | |
1244 | { "statictrace", handle_qxfer_statictrace }, | |
1245 | { "threads", handle_qxfer_threads }, | |
b3b9301e | 1246 | { "traceframe-info", handle_qxfer_traceframe_info }, |
d08aafef PA |
1247 | }; |
1248 | ||
1249 | static int | |
1250 | handle_qxfer (char *own_buf, int packet_len, int *new_packet_len_p) | |
1251 | { | |
1252 | int i; | |
1253 | char *object; | |
1254 | char *rw; | |
1255 | char *annex; | |
1256 | char *offset; | |
1257 | ||
1258 | if (strncmp (own_buf, "qXfer:", 6) != 0) | |
1259 | return 0; | |
1260 | ||
1261 | /* Grab the object, r/w and annex. */ | |
1262 | if (decode_xfer (own_buf + 6, &object, &rw, &annex, &offset) < 0) | |
1263 | { | |
1264 | write_enn (own_buf); | |
1265 | return 1; | |
1266 | } | |
1267 | ||
1268 | for (i = 0; | |
1269 | i < sizeof (qxfer_packets) / sizeof (qxfer_packets[0]); | |
1270 | i++) | |
1271 | { | |
1272 | const struct qxfer *q = &qxfer_packets[i]; | |
1273 | ||
1274 | if (strcmp (object, q->object) == 0) | |
1275 | { | |
1276 | if (strcmp (rw, "read") == 0) | |
1277 | { | |
1278 | unsigned char *data; | |
1279 | int n; | |
1280 | CORE_ADDR ofs; | |
1281 | unsigned int len; | |
1282 | ||
1283 | /* Grab the offset and length. */ | |
1284 | if (decode_xfer_read (offset, &ofs, &len) < 0) | |
1285 | { | |
1286 | write_enn (own_buf); | |
1287 | return 1; | |
1288 | } | |
1289 | ||
1290 | /* Read one extra byte, as an indicator of whether there is | |
1291 | more. */ | |
1292 | if (len > PBUFSIZ - 2) | |
1293 | len = PBUFSIZ - 2; | |
1294 | data = malloc (len + 1); | |
1295 | if (data == NULL) | |
1296 | { | |
1297 | write_enn (own_buf); | |
1298 | return 1; | |
1299 | } | |
1300 | n = (*q->xfer) (annex, data, NULL, ofs, len + 1); | |
1301 | if (n == -2) | |
1302 | { | |
1303 | free (data); | |
1304 | return 0; | |
1305 | } | |
1306 | else if (n < 0) | |
1307 | write_enn (own_buf); | |
1308 | else if (n > len) | |
1309 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); | |
1310 | else | |
1311 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); | |
1312 | ||
1313 | free (data); | |
1314 | return 1; | |
1315 | } | |
1316 | else if (strcmp (rw, "write") == 0) | |
1317 | { | |
1318 | int n; | |
1319 | unsigned int len; | |
1320 | CORE_ADDR ofs; | |
1321 | unsigned char *data; | |
1322 | ||
1323 | strcpy (own_buf, "E00"); | |
1324 | data = malloc (packet_len - (offset - own_buf)); | |
1325 | if (data == NULL) | |
1326 | { | |
1327 | write_enn (own_buf); | |
1328 | return 1; | |
1329 | } | |
1330 | if (decode_xfer_write (offset, packet_len - (offset - own_buf), | |
1331 | &ofs, &len, data) < 0) | |
1332 | { | |
1333 | free (data); | |
1334 | write_enn (own_buf); | |
1335 | return 1; | |
1336 | } | |
1337 | ||
1338 | n = (*q->xfer) (annex, NULL, data, ofs, len); | |
1339 | if (n == -2) | |
1340 | { | |
1341 | free (data); | |
1342 | return 0; | |
1343 | } | |
1344 | else if (n < 0) | |
1345 | write_enn (own_buf); | |
1346 | else | |
1347 | sprintf (own_buf, "%x", n); | |
dc146f7c | 1348 | |
d08aafef PA |
1349 | free (data); |
1350 | return 1; | |
1351 | } | |
dc146f7c | 1352 | |
d08aafef PA |
1353 | return 0; |
1354 | } | |
1355 | } | |
dc146f7c | 1356 | |
d08aafef | 1357 | return 0; |
dc146f7c VP |
1358 | } |
1359 | ||
30ba68cb MS |
1360 | /* Table used by the crc32 function to calcuate the checksum. */ |
1361 | ||
1362 | static unsigned int crc32_table[256] = | |
1363 | {0, 0}; | |
1364 | ||
1365 | /* Compute 32 bit CRC from inferior memory. | |
1366 | ||
1367 | On success, return 32 bit CRC. | |
1368 | On failure, return (unsigned long long) -1. */ | |
1369 | ||
1370 | static unsigned long long | |
1371 | crc32 (CORE_ADDR base, int len, unsigned int crc) | |
1372 | { | |
1373 | if (!crc32_table[1]) | |
1374 | { | |
1375 | /* Initialize the CRC table and the decoding table. */ | |
1376 | int i, j; | |
1377 | unsigned int c; | |
1378 | ||
1379 | for (i = 0; i < 256; i++) | |
1380 | { | |
1381 | for (c = i << 24, j = 8; j > 0; --j) | |
1382 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
1383 | crc32_table[i] = c; | |
1384 | } | |
1385 | } | |
1386 | ||
1387 | while (len--) | |
1388 | { | |
1389 | unsigned char byte = 0; | |
1390 | ||
1391 | /* Return failure if memory read fails. */ | |
1392 | if (read_inferior_memory (base, &byte, 1) != 0) | |
1393 | return (unsigned long long) -1; | |
1394 | ||
1395 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ byte) & 255]; | |
1396 | base++; | |
1397 | } | |
1398 | return (unsigned long long) crc; | |
1399 | } | |
1400 | ||
ce3a066d | 1401 | /* Handle all of the extended 'q' packets. */ |
d08aafef | 1402 | |
ce3a066d | 1403 | void |
0e7f50da | 1404 | handle_query (char *own_buf, int packet_len, int *new_packet_len_p) |
ce3a066d | 1405 | { |
0d62e5e8 DJ |
1406 | static struct inferior_list_entry *thread_ptr; |
1407 | ||
bb63802a | 1408 | /* Reply the current thread id. */ |
db42f210 | 1409 | if (strcmp ("qC", own_buf) == 0 && !disable_packet_qC) |
bb63802a | 1410 | { |
95954743 | 1411 | ptid_t gdb_id; |
2d717e4f | 1412 | require_running (own_buf); |
bd99dc85 | 1413 | |
95954743 PA |
1414 | if (!ptid_equal (general_thread, null_ptid) |
1415 | && !ptid_equal (general_thread, minus_one_ptid)) | |
bd99dc85 PA |
1416 | gdb_id = general_thread; |
1417 | else | |
1418 | { | |
1419 | thread_ptr = all_threads.head; | |
1420 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
1421 | } | |
1422 | ||
95954743 PA |
1423 | sprintf (own_buf, "QC"); |
1424 | own_buf += 2; | |
4b812f4e | 1425 | write_ptid (own_buf, gdb_id); |
bb63802a UW |
1426 | return; |
1427 | } | |
1428 | ||
ce3a066d DJ |
1429 | if (strcmp ("qSymbol::", own_buf) == 0) |
1430 | { | |
d3bbe7a0 PA |
1431 | /* GDB is suggesting new symbols have been loaded. This may |
1432 | mean a new shared library has been detected as loaded, so | |
1433 | take the opportunity to check if breakpoints we think are | |
1434 | inserted, still are. Note that it isn't guaranteed that | |
1435 | we'll see this when a shared library is loaded, and nor will | |
1436 | we see this for unloads (although breakpoints in unloaded | |
1437 | libraries shouldn't trigger), as GDB may not find symbols for | |
1438 | the library at all. We also re-validate breakpoints when we | |
1439 | see a second GDB breakpoint for the same address, and or when | |
1440 | we access breakpoint shadows. */ | |
1441 | validate_breakpoints (); | |
1442 | ||
fa593d66 PA |
1443 | if (target_supports_tracepoints ()) |
1444 | tracepoint_look_up_symbols (); | |
1445 | ||
2d717e4f | 1446 | if (target_running () && the_target->look_up_symbols != NULL) |
2f2893d9 DJ |
1447 | (*the_target->look_up_symbols) (); |
1448 | ||
ce3a066d DJ |
1449 | strcpy (own_buf, "OK"); |
1450 | return; | |
1451 | } | |
1452 | ||
db42f210 | 1453 | if (!disable_packet_qfThreadInfo) |
0d62e5e8 | 1454 | { |
db42f210 | 1455 | if (strcmp ("qfThreadInfo", own_buf) == 0) |
0d62e5e8 | 1456 | { |
95954743 PA |
1457 | ptid_t gdb_id; |
1458 | ||
db42f210 PA |
1459 | require_running (own_buf); |
1460 | thread_ptr = all_threads.head; | |
95954743 PA |
1461 | |
1462 | *own_buf++ = 'm'; | |
1463 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
1464 | write_ptid (own_buf, gdb_id); | |
0d62e5e8 DJ |
1465 | thread_ptr = thread_ptr->next; |
1466 | return; | |
1467 | } | |
db42f210 PA |
1468 | |
1469 | if (strcmp ("qsThreadInfo", own_buf) == 0) | |
0d62e5e8 | 1470 | { |
95954743 PA |
1471 | ptid_t gdb_id; |
1472 | ||
db42f210 PA |
1473 | require_running (own_buf); |
1474 | if (thread_ptr != NULL) | |
1475 | { | |
95954743 PA |
1476 | *own_buf++ = 'm'; |
1477 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
1478 | write_ptid (own_buf, gdb_id); | |
db42f210 PA |
1479 | thread_ptr = thread_ptr->next; |
1480 | return; | |
1481 | } | |
1482 | else | |
1483 | { | |
1484 | sprintf (own_buf, "l"); | |
1485 | return; | |
1486 | } | |
0d62e5e8 DJ |
1487 | } |
1488 | } | |
aa691b87 | 1489 | |
52fb6437 NS |
1490 | if (the_target->read_offsets != NULL |
1491 | && strcmp ("qOffsets", own_buf) == 0) | |
1492 | { | |
1493 | CORE_ADDR text, data; | |
2d717e4f DJ |
1494 | |
1495 | require_running (own_buf); | |
52fb6437 NS |
1496 | if (the_target->read_offsets (&text, &data)) |
1497 | sprintf (own_buf, "Text=%lX;Data=%lX;Bss=%lX", | |
1498 | (long)text, (long)data, (long)data); | |
1499 | else | |
1500 | write_enn (own_buf); | |
1b3f6016 | 1501 | |
52fb6437 NS |
1502 | return; |
1503 | } | |
1504 | ||
be2a5f71 DJ |
1505 | /* Protocol features query. */ |
1506 | if (strncmp ("qSupported", own_buf, 10) == 0 | |
1507 | && (own_buf[10] == ':' || own_buf[10] == '\0')) | |
1508 | { | |
95954743 | 1509 | char *p = &own_buf[10]; |
fa593d66 | 1510 | int gdb_supports_qRelocInsn = 0; |
95954743 | 1511 | |
1570b33e L |
1512 | /* Start processing qSupported packet. */ |
1513 | target_process_qsupported (NULL); | |
1514 | ||
95954743 PA |
1515 | /* Process each feature being provided by GDB. The first |
1516 | feature will follow a ':', and latter features will follow | |
1517 | ';'. */ | |
1518 | if (*p == ':') | |
d149dd1d PA |
1519 | { |
1520 | char **qsupported = NULL; | |
1521 | int count = 0; | |
1522 | int i; | |
1523 | ||
1524 | /* Two passes, to avoid nested strtok calls in | |
1525 | target_process_qsupported. */ | |
1526 | for (p = strtok (p + 1, ";"); | |
1527 | p != NULL; | |
1528 | p = strtok (NULL, ";")) | |
1529 | { | |
1530 | count++; | |
1531 | qsupported = xrealloc (qsupported, count * sizeof (char *)); | |
1532 | qsupported[count - 1] = xstrdup (p); | |
1533 | } | |
1534 | ||
1535 | for (i = 0; i < count; i++) | |
1536 | { | |
1537 | p = qsupported[i]; | |
1538 | if (strcmp (p, "multiprocess+") == 0) | |
1539 | { | |
1540 | /* GDB supports and wants multi-process support if | |
1541 | possible. */ | |
1542 | if (target_supports_multi_process ()) | |
1543 | multi_process = 1; | |
1544 | } | |
fa593d66 PA |
1545 | else if (strcmp (p, "qRelocInsn+") == 0) |
1546 | { | |
1547 | /* GDB supports relocate instruction requests. */ | |
1548 | gdb_supports_qRelocInsn = 1; | |
1549 | } | |
d149dd1d PA |
1550 | else |
1551 | target_process_qsupported (p); | |
1552 | ||
1553 | free (p); | |
1554 | } | |
1555 | ||
1556 | free (qsupported); | |
1557 | } | |
95954743 | 1558 | |
89be2091 | 1559 | sprintf (own_buf, "PacketSize=%x;QPassSignals+", PBUFSIZ - 1); |
0876f84a | 1560 | |
2268b414 JK |
1561 | if (the_target->qxfer_libraries_svr4 != NULL) |
1562 | strcat (own_buf, ";qXfer:libraries-svr4:read+"); | |
1563 | else | |
1564 | { | |
1565 | /* We do not have any hook to indicate whether the non-SVR4 target | |
1566 | backend supports qXfer:libraries:read, so always report it. */ | |
1567 | strcat (own_buf, ";qXfer:libraries:read+"); | |
1568 | } | |
255e7678 | 1569 | |
0876f84a | 1570 | if (the_target->read_auxv != NULL) |
9f2e1e63 | 1571 | strcat (own_buf, ";qXfer:auxv:read+"); |
2d717e4f | 1572 | |
0e7f50da UW |
1573 | if (the_target->qxfer_spu != NULL) |
1574 | strcat (own_buf, ";qXfer:spu:read+;qXfer:spu:write+"); | |
0876f84a | 1575 | |
4aa995e1 PA |
1576 | if (the_target->qxfer_siginfo != NULL) |
1577 | strcat (own_buf, ";qXfer:siginfo:read+;qXfer:siginfo:write+"); | |
1578 | ||
78d85199 YQ |
1579 | if (the_target->read_loadmap != NULL) |
1580 | strcat (own_buf, ";qXfer:fdpic:read+"); | |
1581 | ||
221c031f UW |
1582 | /* We always report qXfer:features:read, as targets may |
1583 | install XML files on a subsequent call to arch_setup. | |
1584 | If we reported to GDB on startup that we don't support | |
1585 | qXfer:feature:read at all, we will never be re-queried. */ | |
1586 | strcat (own_buf, ";qXfer:features:read+"); | |
23181151 | 1587 | |
a6f3e723 SL |
1588 | if (transport_is_reliable) |
1589 | strcat (own_buf, ";QStartNoAckMode+"); | |
07e059b5 VP |
1590 | |
1591 | if (the_target->qxfer_osdata != NULL) | |
1b3f6016 | 1592 | strcat (own_buf, ";qXfer:osdata:read+"); |
07e059b5 | 1593 | |
cf8fd78b PA |
1594 | if (target_supports_multi_process ()) |
1595 | strcat (own_buf, ";multiprocess+"); | |
95954743 | 1596 | |
bd99dc85 PA |
1597 | if (target_supports_non_stop ()) |
1598 | strcat (own_buf, ";QNonStop+"); | |
1599 | ||
03583c20 UW |
1600 | if (target_supports_disable_randomization ()) |
1601 | strcat (own_buf, ";QDisableRandomization+"); | |
1602 | ||
dc146f7c VP |
1603 | strcat (own_buf, ";qXfer:threads:read+"); |
1604 | ||
219f2f23 PA |
1605 | if (target_supports_tracepoints ()) |
1606 | { | |
1607 | strcat (own_buf, ";ConditionalTracepoints+"); | |
1608 | strcat (own_buf, ";TraceStateVariables+"); | |
1609 | strcat (own_buf, ";TracepointSource+"); | |
8336d594 | 1610 | strcat (own_buf, ";DisconnectedTracing+"); |
fa593d66 PA |
1611 | if (gdb_supports_qRelocInsn && target_supports_fast_tracepoints ()) |
1612 | strcat (own_buf, ";FastTracepoints+"); | |
0fb4aa4b | 1613 | strcat (own_buf, ";StaticTracepoints+"); |
1e4d1764 | 1614 | strcat (own_buf, ";InstallInTrace+"); |
0fb4aa4b | 1615 | strcat (own_buf, ";qXfer:statictrace:read+"); |
b3b9301e | 1616 | strcat (own_buf, ";qXfer:traceframe-info:read+"); |
d248b706 | 1617 | strcat (own_buf, ";EnableDisableTracepoints+"); |
3065dfb6 | 1618 | strcat (own_buf, ";tracenz+"); |
219f2f23 PA |
1619 | } |
1620 | ||
be2a5f71 DJ |
1621 | return; |
1622 | } | |
1623 | ||
dae5f5cf DJ |
1624 | /* Thread-local storage support. */ |
1625 | if (the_target->get_tls_address != NULL | |
1626 | && strncmp ("qGetTLSAddr:", own_buf, 12) == 0) | |
1627 | { | |
1628 | char *p = own_buf + 12; | |
5b1c542e | 1629 | CORE_ADDR parts[2], address = 0; |
dae5f5cf | 1630 | int i, err; |
95954743 | 1631 | ptid_t ptid = null_ptid; |
dae5f5cf | 1632 | |
2d717e4f DJ |
1633 | require_running (own_buf); |
1634 | ||
dae5f5cf DJ |
1635 | for (i = 0; i < 3; i++) |
1636 | { | |
1637 | char *p2; | |
1638 | int len; | |
1639 | ||
1640 | if (p == NULL) | |
1641 | break; | |
1642 | ||
1643 | p2 = strchr (p, ','); | |
1644 | if (p2) | |
1645 | { | |
1646 | len = p2 - p; | |
1647 | p2++; | |
1648 | } | |
1649 | else | |
1650 | { | |
1651 | len = strlen (p); | |
1652 | p2 = NULL; | |
1653 | } | |
1654 | ||
5b1c542e | 1655 | if (i == 0) |
95954743 | 1656 | ptid = read_ptid (p, NULL); |
5b1c542e PA |
1657 | else |
1658 | decode_address (&parts[i - 1], p, len); | |
dae5f5cf DJ |
1659 | p = p2; |
1660 | } | |
1661 | ||
1662 | if (p != NULL || i < 3) | |
1663 | err = 1; | |
1664 | else | |
1665 | { | |
e09875d4 | 1666 | struct thread_info *thread = find_thread_ptid (ptid); |
dae5f5cf DJ |
1667 | |
1668 | if (thread == NULL) | |
1669 | err = 2; | |
1670 | else | |
5b1c542e | 1671 | err = the_target->get_tls_address (thread, parts[0], parts[1], |
dae5f5cf DJ |
1672 | &address); |
1673 | } | |
1674 | ||
1675 | if (err == 0) | |
1676 | { | |
c6f46ca0 | 1677 | strcpy (own_buf, paddress(address)); |
dae5f5cf DJ |
1678 | return; |
1679 | } | |
1680 | else if (err > 0) | |
1681 | { | |
1682 | write_enn (own_buf); | |
1683 | return; | |
1684 | } | |
1685 | ||
1686 | /* Otherwise, pretend we do not understand this packet. */ | |
1687 | } | |
1688 | ||
711e434b PM |
1689 | /* Windows OS Thread Information Block address support. */ |
1690 | if (the_target->get_tib_address != NULL | |
1691 | && strncmp ("qGetTIBAddr:", own_buf, 12) == 0) | |
1692 | { | |
1693 | char *annex; | |
1694 | int n; | |
1695 | CORE_ADDR tlb; | |
1696 | ptid_t ptid = read_ptid (own_buf + 12, &annex); | |
1697 | ||
1698 | n = (*the_target->get_tib_address) (ptid, &tlb); | |
1699 | if (n == 1) | |
1700 | { | |
c6f46ca0 | 1701 | strcpy (own_buf, paddress(tlb)); |
711e434b PM |
1702 | return; |
1703 | } | |
1704 | else if (n == 0) | |
1705 | { | |
1706 | write_enn (own_buf); | |
1707 | return; | |
1708 | } | |
1709 | return; | |
1710 | } | |
1711 | ||
c74d0ad8 DJ |
1712 | /* Handle "monitor" commands. */ |
1713 | if (strncmp ("qRcmd,", own_buf, 6) == 0) | |
1714 | { | |
aef93bd7 | 1715 | char *mon = malloc (PBUFSIZ); |
c74d0ad8 DJ |
1716 | int len = strlen (own_buf + 6); |
1717 | ||
aef93bd7 DE |
1718 | if (mon == NULL) |
1719 | { | |
1720 | write_enn (own_buf); | |
1721 | return; | |
1722 | } | |
1723 | ||
d41b6bb4 | 1724 | if ((len % 2) != 0 || unhexify (mon, own_buf + 6, len / 2) != len / 2) |
c74d0ad8 DJ |
1725 | { |
1726 | write_enn (own_buf); | |
1727 | free (mon); | |
1728 | return; | |
1729 | } | |
1730 | mon[len / 2] = '\0'; | |
1731 | ||
1732 | write_ok (own_buf); | |
1733 | ||
cdbfd419 PP |
1734 | if (the_target->handle_monitor_command == NULL |
1735 | || (*the_target->handle_monitor_command) (mon) == 0) | |
1736 | /* Default processing. */ | |
1737 | handle_monitor_command (mon); | |
c74d0ad8 DJ |
1738 | |
1739 | free (mon); | |
1740 | return; | |
1741 | } | |
1742 | ||
493e2a69 MS |
1743 | if (strncmp ("qSearch:memory:", own_buf, |
1744 | sizeof ("qSearch:memory:") - 1) == 0) | |
08388c79 DE |
1745 | { |
1746 | require_running (own_buf); | |
1747 | handle_search_memory (own_buf, packet_len); | |
1748 | return; | |
1749 | } | |
1750 | ||
95954743 PA |
1751 | if (strcmp (own_buf, "qAttached") == 0 |
1752 | || strncmp (own_buf, "qAttached:", sizeof ("qAttached:") - 1) == 0) | |
0b16c5cf | 1753 | { |
95954743 PA |
1754 | struct process_info *process; |
1755 | ||
1756 | if (own_buf[sizeof ("qAttached") - 1]) | |
1757 | { | |
1758 | int pid = strtoul (own_buf + sizeof ("qAttached:") - 1, NULL, 16); | |
1759 | process = (struct process_info *) | |
1760 | find_inferior_id (&all_processes, pid_to_ptid (pid)); | |
1761 | } | |
1762 | else | |
1763 | { | |
1764 | require_running (own_buf); | |
1765 | process = current_process (); | |
1766 | } | |
1767 | ||
1768 | if (process == NULL) | |
1769 | { | |
1770 | write_enn (own_buf); | |
1771 | return; | |
1772 | } | |
1773 | ||
1774 | strcpy (own_buf, process->attached ? "1" : "0"); | |
0b16c5cf PA |
1775 | return; |
1776 | } | |
1777 | ||
30ba68cb MS |
1778 | if (strncmp ("qCRC:", own_buf, 5) == 0) |
1779 | { | |
1780 | /* CRC check (compare-section). */ | |
1781 | char *comma; | |
1782 | CORE_ADDR base; | |
1783 | int len; | |
1784 | unsigned long long crc; | |
1785 | ||
1786 | require_running (own_buf); | |
2280c721 | 1787 | base = strtoul (own_buf + 5, &comma, 16); |
30ba68cb MS |
1788 | if (*comma++ != ',') |
1789 | { | |
1790 | write_enn (own_buf); | |
1791 | return; | |
1792 | } | |
1793 | len = strtoul (comma, NULL, 16); | |
1794 | crc = crc32 (base, len, 0xffffffff); | |
1795 | /* Check for memory failure. */ | |
1796 | if (crc == (unsigned long long) -1) | |
1797 | { | |
1798 | write_enn (own_buf); | |
1799 | return; | |
1800 | } | |
1801 | sprintf (own_buf, "C%lx", (unsigned long) crc); | |
1802 | return; | |
1803 | } | |
1804 | ||
d08aafef PA |
1805 | if (handle_qxfer (own_buf, packet_len, new_packet_len_p)) |
1806 | return; | |
1807 | ||
219f2f23 PA |
1808 | if (target_supports_tracepoints () && handle_tracepoint_query (own_buf)) |
1809 | return; | |
1810 | ||
ce3a066d DJ |
1811 | /* Otherwise we didn't know what packet it was. Say we didn't |
1812 | understand it. */ | |
1813 | own_buf[0] = 0; | |
1814 | } | |
1815 | ||
ce1a5b52 PA |
1816 | static void gdb_wants_all_threads_stopped (void); |
1817 | ||
64386c31 DJ |
1818 | /* Parse vCont packets. */ |
1819 | void | |
5b1c542e | 1820 | handle_v_cont (char *own_buf) |
64386c31 DJ |
1821 | { |
1822 | char *p, *q; | |
1823 | int n = 0, i = 0; | |
2bd7c093 | 1824 | struct thread_resume *resume_info; |
95954743 | 1825 | struct thread_resume default_action = {{0}}; |
64386c31 DJ |
1826 | |
1827 | /* Count the number of semicolons in the packet. There should be one | |
1828 | for every action. */ | |
1829 | p = &own_buf[5]; | |
1830 | while (p) | |
1831 | { | |
1832 | n++; | |
1833 | p++; | |
1834 | p = strchr (p, ';'); | |
1835 | } | |
2bd7c093 PA |
1836 | |
1837 | resume_info = malloc (n * sizeof (resume_info[0])); | |
aef93bd7 DE |
1838 | if (resume_info == NULL) |
1839 | goto err; | |
64386c31 | 1840 | |
64386c31 | 1841 | p = &own_buf[5]; |
64386c31 DJ |
1842 | while (*p) |
1843 | { | |
1844 | p++; | |
1845 | ||
64386c31 | 1846 | if (p[0] == 's' || p[0] == 'S') |
bd99dc85 | 1847 | resume_info[i].kind = resume_step; |
64386c31 | 1848 | else if (p[0] == 'c' || p[0] == 'C') |
bd99dc85 PA |
1849 | resume_info[i].kind = resume_continue; |
1850 | else if (p[0] == 't') | |
1851 | resume_info[i].kind = resume_stop; | |
64386c31 DJ |
1852 | else |
1853 | goto err; | |
1854 | ||
1855 | if (p[0] == 'S' || p[0] == 'C') | |
1856 | { | |
1857 | int sig; | |
1858 | sig = strtol (p + 1, &q, 16); | |
1859 | if (p == q) | |
1860 | goto err; | |
1861 | p = q; | |
1862 | ||
1863 | if (!target_signal_to_host_p (sig)) | |
1864 | goto err; | |
1865 | resume_info[i].sig = target_signal_to_host (sig); | |
1866 | } | |
1867 | else | |
1868 | { | |
1869 | resume_info[i].sig = 0; | |
1870 | p = p + 1; | |
1871 | } | |
1872 | ||
1873 | if (p[0] == 0) | |
1874 | { | |
95954743 | 1875 | resume_info[i].thread = minus_one_ptid; |
64386c31 DJ |
1876 | default_action = resume_info[i]; |
1877 | ||
1878 | /* Note: we don't increment i here, we'll overwrite this entry | |
1879 | the next time through. */ | |
1880 | } | |
1881 | else if (p[0] == ':') | |
1882 | { | |
95954743 | 1883 | ptid_t ptid = read_ptid (p + 1, &q); |
a06660f7 | 1884 | |
64386c31 DJ |
1885 | if (p == q) |
1886 | goto err; | |
1887 | p = q; | |
1888 | if (p[0] != ';' && p[0] != 0) | |
1889 | goto err; | |
1890 | ||
95954743 | 1891 | resume_info[i].thread = ptid; |
a06660f7 | 1892 | |
64386c31 DJ |
1893 | i++; |
1894 | } | |
1895 | } | |
1896 | ||
2bd7c093 PA |
1897 | if (i < n) |
1898 | resume_info[i] = default_action; | |
64386c31 DJ |
1899 | |
1900 | /* Still used in occasional places in the backend. */ | |
bd99dc85 | 1901 | if (n == 1 |
95954743 | 1902 | && !ptid_equal (resume_info[0].thread, minus_one_ptid) |
bd99dc85 | 1903 | && resume_info[0].kind != resume_stop) |
64386c31 DJ |
1904 | cont_thread = resume_info[0].thread; |
1905 | else | |
95954743 | 1906 | cont_thread = minus_one_ptid; |
dc3f8883 | 1907 | set_desired_inferior (0); |
64386c31 | 1908 | |
bd99dc85 PA |
1909 | if (!non_stop) |
1910 | enable_async_io (); | |
1911 | ||
2bd7c093 | 1912 | (*the_target->resume) (resume_info, n); |
64386c31 DJ |
1913 | |
1914 | free (resume_info); | |
1915 | ||
bd99dc85 PA |
1916 | if (non_stop) |
1917 | write_ok (own_buf); | |
1918 | else | |
1919 | { | |
95954743 | 1920 | last_ptid = mywait (minus_one_ptid, &last_status, 0, 1); |
ce1a5b52 | 1921 | |
d20a8ad9 PA |
1922 | if (last_status.kind != TARGET_WAITKIND_EXITED |
1923 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
1924 | current_inferior->last_status = last_status; | |
1925 | ||
ce1a5b52 PA |
1926 | /* From the client's perspective, all-stop mode always stops all |
1927 | threads implicitly (and the target backend has already done | |
1928 | so by now). Tag all threads as "want-stopped", so we don't | |
1929 | resume them implicitly without the client telling us to. */ | |
1930 | gdb_wants_all_threads_stopped (); | |
bd99dc85 PA |
1931 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
1932 | disable_async_io (); | |
6bd31874 JB |
1933 | |
1934 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
1935 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
1936 | mourn_inferior (find_process_pid (ptid_get_pid (last_ptid))); | |
bd99dc85 | 1937 | } |
64386c31 DJ |
1938 | return; |
1939 | ||
1940 | err: | |
255e7678 | 1941 | write_enn (own_buf); |
64386c31 DJ |
1942 | free (resume_info); |
1943 | return; | |
1944 | } | |
1945 | ||
2d717e4f DJ |
1946 | /* Attach to a new program. Return 1 if successful, 0 if failure. */ |
1947 | int | |
5b1c542e | 1948 | handle_v_attach (char *own_buf) |
2d717e4f DJ |
1949 | { |
1950 | int pid; | |
1951 | ||
1952 | pid = strtol (own_buf + 8, NULL, 16); | |
5b1c542e | 1953 | if (pid != 0 && attach_inferior (pid) == 0) |
2d717e4f | 1954 | { |
aeba519e PA |
1955 | /* Don't report shared library events after attaching, even if |
1956 | some libraries are preloaded. GDB will always poll the | |
1957 | library list. Avoids the "stopped by shared library event" | |
1958 | notice on the GDB side. */ | |
1959 | dlls_changed = 0; | |
bd99dc85 PA |
1960 | |
1961 | if (non_stop) | |
1962 | { | |
1963 | /* In non-stop, we don't send a resume reply. Stop events | |
1964 | will follow up using the normal notification | |
1965 | mechanism. */ | |
1966 | write_ok (own_buf); | |
1967 | } | |
1968 | else | |
1969 | prepare_resume_reply (own_buf, last_ptid, &last_status); | |
1970 | ||
2d717e4f DJ |
1971 | return 1; |
1972 | } | |
1973 | else | |
1974 | { | |
1975 | write_enn (own_buf); | |
1976 | return 0; | |
1977 | } | |
1978 | } | |
1979 | ||
1980 | /* Run a new program. Return 1 if successful, 0 if failure. */ | |
1981 | static int | |
5b1c542e | 1982 | handle_v_run (char *own_buf) |
2d717e4f | 1983 | { |
aef93bd7 | 1984 | char *p, *next_p, **new_argv; |
2d717e4f DJ |
1985 | int i, new_argc; |
1986 | ||
1987 | new_argc = 0; | |
1988 | for (p = own_buf + strlen ("vRun;"); p && *p; p = strchr (p, ';')) | |
1989 | { | |
1990 | p++; | |
1991 | new_argc++; | |
1992 | } | |
1993 | ||
aef93bd7 DE |
1994 | new_argv = calloc (new_argc + 2, sizeof (char *)); |
1995 | if (new_argv == NULL) | |
1996 | { | |
1997 | write_enn (own_buf); | |
1998 | return 0; | |
1999 | } | |
2000 | ||
2d717e4f DJ |
2001 | i = 0; |
2002 | for (p = own_buf + strlen ("vRun;"); *p; p = next_p) | |
2003 | { | |
2004 | next_p = strchr (p, ';'); | |
2005 | if (next_p == NULL) | |
2006 | next_p = p + strlen (p); | |
2007 | ||
2008 | if (i == 0 && p == next_p) | |
2009 | new_argv[i] = NULL; | |
2010 | else | |
2011 | { | |
aef93bd7 | 2012 | /* FIXME: Fail request if out of memory instead of dying. */ |
bca929d3 | 2013 | new_argv[i] = xmalloc (1 + (next_p - p) / 2); |
2d717e4f DJ |
2014 | unhexify (new_argv[i], p, (next_p - p) / 2); |
2015 | new_argv[i][(next_p - p) / 2] = '\0'; | |
2016 | } | |
2017 | ||
2018 | if (*next_p) | |
2019 | next_p++; | |
2020 | i++; | |
2021 | } | |
2022 | new_argv[i] = NULL; | |
2023 | ||
2024 | if (new_argv[0] == NULL) | |
2025 | { | |
f142445f DJ |
2026 | /* GDB didn't specify a program to run. Use the program from the |
2027 | last run with the new argument list. */ | |
9b710a42 | 2028 | |
2d717e4f DJ |
2029 | if (program_argv == NULL) |
2030 | { | |
2031 | write_enn (own_buf); | |
b2c04452 | 2032 | freeargv (new_argv); |
2d717e4f DJ |
2033 | return 0; |
2034 | } | |
2035 | ||
aef93bd7 DE |
2036 | new_argv[0] = strdup (program_argv[0]); |
2037 | if (new_argv[0] == NULL) | |
2038 | { | |
aef93bd7 | 2039 | write_enn (own_buf); |
b2c04452 | 2040 | freeargv (new_argv); |
aef93bd7 | 2041 | return 0; |
1b3f6016 | 2042 | } |
2d717e4f | 2043 | } |
f142445f | 2044 | |
aef93bd7 DE |
2045 | /* Free the old argv and install the new one. */ |
2046 | freeargv (program_argv); | |
f142445f | 2047 | program_argv = new_argv; |
2d717e4f | 2048 | |
5b1c542e PA |
2049 | start_inferior (program_argv); |
2050 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
2d717e4f | 2051 | { |
5b1c542e | 2052 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
bd99dc85 PA |
2053 | |
2054 | /* In non-stop, sending a resume reply doesn't set the general | |
2055 | thread, but GDB assumes a vRun sets it (this is so GDB can | |
2056 | query which is the main thread of the new inferior. */ | |
2057 | if (non_stop) | |
2058 | general_thread = last_ptid; | |
2059 | ||
2d717e4f DJ |
2060 | return 1; |
2061 | } | |
2062 | else | |
2063 | { | |
2064 | write_enn (own_buf); | |
2065 | return 0; | |
2066 | } | |
2067 | } | |
2068 | ||
95954743 PA |
2069 | /* Kill process. Return 1 if successful, 0 if failure. */ |
2070 | int | |
2071 | handle_v_kill (char *own_buf) | |
2072 | { | |
2073 | int pid; | |
2074 | char *p = &own_buf[6]; | |
0f54c268 PM |
2075 | if (multi_process) |
2076 | pid = strtol (p, NULL, 16); | |
2077 | else | |
2078 | pid = signal_pid; | |
95954743 PA |
2079 | if (pid != 0 && kill_inferior (pid) == 0) |
2080 | { | |
2081 | last_status.kind = TARGET_WAITKIND_SIGNALLED; | |
2082 | last_status.value.sig = TARGET_SIGNAL_KILL; | |
2083 | last_ptid = pid_to_ptid (pid); | |
2084 | discard_queued_stop_replies (pid); | |
2085 | write_ok (own_buf); | |
2086 | return 1; | |
2087 | } | |
2088 | else | |
2089 | { | |
2090 | write_enn (own_buf); | |
2091 | return 0; | |
2092 | } | |
2093 | } | |
2094 | ||
bd99dc85 PA |
2095 | /* Handle a 'vStopped' packet. */ |
2096 | static void | |
2097 | handle_v_stopped (char *own_buf) | |
2098 | { | |
2099 | /* If we're waiting for GDB to acknowledge a pending stop reply, | |
2100 | consider that done. */ | |
2101 | if (notif_queue) | |
2102 | { | |
2103 | struct vstop_notif *head; | |
2104 | ||
2105 | if (remote_debug) | |
95954743 PA |
2106 | fprintf (stderr, "vStopped: acking %s\n", |
2107 | target_pid_to_str (notif_queue->ptid)); | |
bd99dc85 PA |
2108 | |
2109 | head = notif_queue; | |
2110 | notif_queue = notif_queue->next; | |
2111 | free (head); | |
2112 | } | |
2113 | ||
2114 | /* Push another stop reply, or if there are no more left, an OK. */ | |
2115 | send_next_stop_reply (own_buf); | |
2116 | } | |
2117 | ||
64386c31 DJ |
2118 | /* Handle all of the extended 'v' packets. */ |
2119 | void | |
5b1c542e | 2120 | handle_v_requests (char *own_buf, int packet_len, int *new_packet_len) |
64386c31 | 2121 | { |
db42f210 | 2122 | if (!disable_packet_vCont) |
64386c31 | 2123 | { |
db42f210 PA |
2124 | if (strncmp (own_buf, "vCont;", 6) == 0) |
2125 | { | |
2126 | require_running (own_buf); | |
5b1c542e | 2127 | handle_v_cont (own_buf); |
db42f210 PA |
2128 | return; |
2129 | } | |
64386c31 | 2130 | |
db42f210 PA |
2131 | if (strncmp (own_buf, "vCont?", 6) == 0) |
2132 | { | |
bd99dc85 | 2133 | strcpy (own_buf, "vCont;c;C;s;S;t"); |
db42f210 PA |
2134 | return; |
2135 | } | |
64386c31 DJ |
2136 | } |
2137 | ||
a6b151f1 DJ |
2138 | if (strncmp (own_buf, "vFile:", 6) == 0 |
2139 | && handle_vFile (own_buf, packet_len, new_packet_len)) | |
2140 | return; | |
2141 | ||
2d717e4f DJ |
2142 | if (strncmp (own_buf, "vAttach;", 8) == 0) |
2143 | { | |
95954743 | 2144 | if (!multi_process && target_running ()) |
2d717e4f | 2145 | { |
fd96d250 PA |
2146 | fprintf (stderr, "Already debugging a process\n"); |
2147 | write_enn (own_buf); | |
2148 | return; | |
2d717e4f | 2149 | } |
5b1c542e | 2150 | handle_v_attach (own_buf); |
2d717e4f DJ |
2151 | return; |
2152 | } | |
2153 | ||
2154 | if (strncmp (own_buf, "vRun;", 5) == 0) | |
2155 | { | |
95954743 | 2156 | if (!multi_process && target_running ()) |
2d717e4f | 2157 | { |
fd96d250 PA |
2158 | fprintf (stderr, "Already debugging a process\n"); |
2159 | write_enn (own_buf); | |
2160 | return; | |
2d717e4f | 2161 | } |
5b1c542e | 2162 | handle_v_run (own_buf); |
2d717e4f DJ |
2163 | return; |
2164 | } | |
2165 | ||
95954743 PA |
2166 | if (strncmp (own_buf, "vKill;", 6) == 0) |
2167 | { | |
2168 | if (!target_running ()) | |
2169 | { | |
2170 | fprintf (stderr, "No process to kill\n"); | |
2171 | write_enn (own_buf); | |
2172 | return; | |
2173 | } | |
2174 | handle_v_kill (own_buf); | |
2175 | return; | |
2176 | } | |
2177 | ||
bd99dc85 PA |
2178 | if (strncmp (own_buf, "vStopped", 8) == 0) |
2179 | { | |
2180 | handle_v_stopped (own_buf); | |
2181 | return; | |
2182 | } | |
2183 | ||
64386c31 DJ |
2184 | /* Otherwise we didn't know what packet it was. Say we didn't |
2185 | understand it. */ | |
2186 | own_buf[0] = 0; | |
2187 | return; | |
2188 | } | |
2189 | ||
bd99dc85 PA |
2190 | /* Resume inferior and wait for another event. In non-stop mode, |
2191 | don't really wait here, but return immediatelly to the event | |
2192 | loop. */ | |
1fd7cdc2 | 2193 | static void |
5b1c542e | 2194 | myresume (char *own_buf, int step, int sig) |
64386c31 DJ |
2195 | { |
2196 | struct thread_resume resume_info[2]; | |
2197 | int n = 0; | |
2bd7c093 | 2198 | int valid_cont_thread; |
a20d5e98 DJ |
2199 | |
2200 | set_desired_inferior (0); | |
64386c31 | 2201 | |
95954743 PA |
2202 | valid_cont_thread = (!ptid_equal (cont_thread, null_ptid) |
2203 | && !ptid_equal (cont_thread, minus_one_ptid)); | |
2bd7c093 PA |
2204 | |
2205 | if (step || sig || valid_cont_thread) | |
64386c31 DJ |
2206 | { |
2207 | resume_info[0].thread | |
2208 | = ((struct inferior_list_entry *) current_inferior)->id; | |
bd99dc85 PA |
2209 | if (step) |
2210 | resume_info[0].kind = resume_step; | |
2211 | else | |
2212 | resume_info[0].kind = resume_continue; | |
64386c31 | 2213 | resume_info[0].sig = sig; |
64386c31 DJ |
2214 | n++; |
2215 | } | |
2bd7c093 PA |
2216 | |
2217 | if (!valid_cont_thread) | |
2218 | { | |
95954743 | 2219 | resume_info[n].thread = minus_one_ptid; |
bd99dc85 | 2220 | resume_info[n].kind = resume_continue; |
2bd7c093 PA |
2221 | resume_info[n].sig = 0; |
2222 | n++; | |
2223 | } | |
64386c31 | 2224 | |
bd99dc85 PA |
2225 | if (!non_stop) |
2226 | enable_async_io (); | |
2227 | ||
2bd7c093 | 2228 | (*the_target->resume) (resume_info, n); |
bd99dc85 PA |
2229 | |
2230 | if (non_stop) | |
2231 | write_ok (own_buf); | |
2232 | else | |
2233 | { | |
95954743 | 2234 | last_ptid = mywait (minus_one_ptid, &last_status, 0, 1); |
d20a8ad9 PA |
2235 | |
2236 | if (last_status.kind != TARGET_WAITKIND_EXITED | |
2237 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
2238 | { | |
2239 | current_inferior->last_resume_kind = resume_stop; | |
2240 | current_inferior->last_status = last_status; | |
2241 | } | |
2242 | ||
bd99dc85 PA |
2243 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
2244 | disable_async_io (); | |
6bd31874 JB |
2245 | |
2246 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
2247 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2248 | mourn_inferior (find_process_pid (ptid_get_pid (last_ptid))); | |
bd99dc85 PA |
2249 | } |
2250 | } | |
2251 | ||
2252 | /* Callback for for_each_inferior. Make a new stop reply for each | |
2253 | stopped thread. */ | |
2254 | ||
95954743 PA |
2255 | static int |
2256 | queue_stop_reply_callback (struct inferior_list_entry *entry, void *arg) | |
bd99dc85 | 2257 | { |
8336d594 | 2258 | struct thread_info *thread = (struct thread_info *) entry; |
bd99dc85 | 2259 | |
8336d594 PA |
2260 | /* For now, assume targets that don't have this callback also don't |
2261 | manage the thread's last_status field. */ | |
2262 | if (the_target->thread_stopped == NULL) | |
95954743 | 2263 | { |
8336d594 PA |
2264 | /* Pass the last stop reply back to GDB, but don't notify |
2265 | yet. */ | |
2266 | queue_stop_reply (entry->id, &thread->last_status); | |
2267 | } | |
2268 | else | |
2269 | { | |
2270 | if (thread_stopped (thread)) | |
2271 | { | |
2272 | if (debug_threads) | |
493e2a69 MS |
2273 | fprintf (stderr, |
2274 | "Reporting thread %s as already stopped with %s\n", | |
8336d594 PA |
2275 | target_pid_to_str (entry->id), |
2276 | target_waitstatus_to_string (&thread->last_status)); | |
2277 | ||
d20a8ad9 PA |
2278 | gdb_assert (thread->last_status.kind != TARGET_WAITKIND_IGNORE); |
2279 | ||
8336d594 PA |
2280 | /* Pass the last stop reply back to GDB, but don't notify |
2281 | yet. */ | |
2282 | queue_stop_reply (entry->id, &thread->last_status); | |
2283 | } | |
95954743 PA |
2284 | } |
2285 | ||
2286 | return 0; | |
64386c31 DJ |
2287 | } |
2288 | ||
ce1a5b52 PA |
2289 | /* Set this inferior threads's state as "want-stopped". We won't |
2290 | resume this thread until the client gives us another action for | |
2291 | it. */ | |
8336d594 PA |
2292 | |
2293 | static void | |
2294 | gdb_wants_thread_stopped (struct inferior_list_entry *entry) | |
2295 | { | |
2296 | struct thread_info *thread = (struct thread_info *) entry; | |
2297 | ||
2298 | thread->last_resume_kind = resume_stop; | |
2299 | ||
2300 | if (thread->last_status.kind == TARGET_WAITKIND_IGNORE) | |
2301 | { | |
ce1a5b52 PA |
2302 | /* Most threads are stopped implicitly (all-stop); tag that with |
2303 | signal 0. */ | |
8336d594 PA |
2304 | thread->last_status.kind = TARGET_WAITKIND_STOPPED; |
2305 | thread->last_status.value.sig = TARGET_SIGNAL_0; | |
2306 | } | |
2307 | } | |
2308 | ||
2309 | /* Set all threads' states as "want-stopped". */ | |
2310 | ||
2311 | static void | |
2312 | gdb_wants_all_threads_stopped (void) | |
2313 | { | |
2314 | for_each_inferior (&all_threads, gdb_wants_thread_stopped); | |
2315 | } | |
2316 | ||
2317 | /* Clear the gdb_detached flag of every process. */ | |
2318 | ||
2319 | static void | |
2320 | gdb_reattached_process (struct inferior_list_entry *entry) | |
2321 | { | |
2322 | struct process_info *process = (struct process_info *) entry; | |
2323 | ||
2324 | process->gdb_detached = 0; | |
2325 | } | |
2326 | ||
5b1c542e PA |
2327 | /* Status handler for the '?' packet. */ |
2328 | ||
2329 | static void | |
2330 | handle_status (char *own_buf) | |
2331 | { | |
8336d594 PA |
2332 | /* GDB is connected, don't forward events to the target anymore. */ |
2333 | for_each_inferior (&all_processes, gdb_reattached_process); | |
bd99dc85 PA |
2334 | |
2335 | /* In non-stop mode, we must send a stop reply for each stopped | |
2336 | thread. In all-stop mode, just send one for the first stopped | |
2337 | thread we find. */ | |
2338 | ||
2339 | if (non_stop) | |
2340 | { | |
8336d594 PA |
2341 | discard_queued_stop_replies (-1); |
2342 | find_inferior (&all_threads, queue_stop_reply_callback, NULL); | |
bd99dc85 PA |
2343 | |
2344 | /* The first is sent immediatly. OK is sent if there is no | |
2345 | stopped thread, which is the same handling of the vStopped | |
2346 | packet (by design). */ | |
2347 | send_next_stop_reply (own_buf); | |
2348 | } | |
5b1c542e | 2349 | else |
bd99dc85 | 2350 | { |
7984d532 | 2351 | pause_all (0); |
fa593d66 | 2352 | stabilize_threads (); |
8336d594 PA |
2353 | gdb_wants_all_threads_stopped (); |
2354 | ||
bd99dc85 | 2355 | if (all_threads.head) |
8336d594 PA |
2356 | { |
2357 | struct target_waitstatus status; | |
2358 | ||
2359 | status.kind = TARGET_WAITKIND_STOPPED; | |
2360 | status.value.sig = TARGET_SIGNAL_TRAP; | |
2361 | prepare_resume_reply (own_buf, | |
2362 | all_threads.head->id, &status); | |
2363 | } | |
bd99dc85 PA |
2364 | else |
2365 | strcpy (own_buf, "W00"); | |
2366 | } | |
5b1c542e PA |
2367 | } |
2368 | ||
dd24457d DJ |
2369 | static void |
2370 | gdbserver_version (void) | |
2371 | { | |
c16158bc | 2372 | printf ("GNU gdbserver %s%s\n" |
71ce852c | 2373 | "Copyright (C) 2011 Free Software Foundation, Inc.\n" |
493e2a69 MS |
2374 | "gdbserver is free software, covered by the " |
2375 | "GNU General Public License.\n" | |
dd24457d | 2376 | "This gdbserver was configured as \"%s\"\n", |
c16158bc | 2377 | PKGVERSION, version, host_name); |
dd24457d DJ |
2378 | } |
2379 | ||
0bc68c49 | 2380 | static void |
c16158bc | 2381 | gdbserver_usage (FILE *stream) |
0bc68c49 | 2382 | { |
c16158bc JM |
2383 | fprintf (stream, "Usage:\tgdbserver [OPTIONS] COMM PROG [ARGS ...]\n" |
2384 | "\tgdbserver [OPTIONS] --attach COMM PID\n" | |
2385 | "\tgdbserver [OPTIONS] --multi COMM\n" | |
2386 | "\n" | |
2387 | "COMM may either be a tty device (for serial debugging), or \n" | |
2388 | "HOST:PORT to listen for a TCP connection.\n" | |
2389 | "\n" | |
2390 | "Options:\n" | |
62709adf PA |
2391 | " --debug Enable general debugging output.\n" |
2392 | " --remote-debug Enable remote protocol debugging output.\n" | |
2393 | " --version Display version information and exit.\n" | |
03f2bd59 JK |
2394 | " --wrapper WRAPPER -- Run WRAPPER to start new programs.\n" |
2395 | " --once Exit after the first connection has " | |
2396 | "closed.\n"); | |
c16158bc JM |
2397 | if (REPORT_BUGS_TO[0] && stream == stdout) |
2398 | fprintf (stream, "Report bugs to \"%s\".\n", REPORT_BUGS_TO); | |
0bc68c49 DJ |
2399 | } |
2400 | ||
db42f210 PA |
2401 | static void |
2402 | gdbserver_show_disableable (FILE *stream) | |
2403 | { | |
2404 | fprintf (stream, "Disableable packets:\n" | |
2405 | " vCont \tAll vCont packets\n" | |
2406 | " qC \tQuerying the current thread\n" | |
2407 | " qfThreadInfo\tThread listing\n" | |
493e2a69 MS |
2408 | " Tthread \tPassing the thread specifier in the " |
2409 | "T stop reply packet\n" | |
db42f210 PA |
2410 | " threads \tAll of the above\n"); |
2411 | } | |
2412 | ||
2413 | ||
2d717e4f DJ |
2414 | #undef require_running |
2415 | #define require_running(BUF) \ | |
2416 | if (!target_running ()) \ | |
2417 | { \ | |
2418 | write_enn (BUF); \ | |
2419 | break; \ | |
2420 | } | |
2421 | ||
95954743 PA |
2422 | static int |
2423 | first_thread_of (struct inferior_list_entry *entry, void *args) | |
2424 | { | |
2425 | int pid = * (int *) args; | |
2426 | ||
2427 | if (ptid_get_pid (entry->id) == pid) | |
2428 | return 1; | |
2429 | ||
2430 | return 0; | |
2431 | } | |
2432 | ||
2433 | static void | |
2434 | kill_inferior_callback (struct inferior_list_entry *entry) | |
2435 | { | |
2436 | struct process_info *process = (struct process_info *) entry; | |
2437 | int pid = ptid_get_pid (process->head.id); | |
2438 | ||
2439 | kill_inferior (pid); | |
2440 | discard_queued_stop_replies (pid); | |
2441 | } | |
2442 | ||
9f767825 DE |
2443 | /* Callback for for_each_inferior to detach or kill the inferior, |
2444 | depending on whether we attached to it or not. | |
2445 | We inform the user whether we're detaching or killing the process | |
2446 | as this is only called when gdbserver is about to exit. */ | |
2447 | ||
95954743 PA |
2448 | static void |
2449 | detach_or_kill_inferior_callback (struct inferior_list_entry *entry) | |
2450 | { | |
2451 | struct process_info *process = (struct process_info *) entry; | |
2452 | int pid = ptid_get_pid (process->head.id); | |
2453 | ||
2454 | if (process->attached) | |
2455 | detach_inferior (pid); | |
2456 | else | |
2457 | kill_inferior (pid); | |
2458 | ||
2459 | discard_queued_stop_replies (pid); | |
2460 | } | |
2461 | ||
9f767825 DE |
2462 | /* for_each_inferior callback for detach_or_kill_for_exit to print |
2463 | the pids of started inferiors. */ | |
2464 | ||
2465 | static void | |
2466 | print_started_pid (struct inferior_list_entry *entry) | |
2467 | { | |
2468 | struct process_info *process = (struct process_info *) entry; | |
2469 | ||
2470 | if (! process->attached) | |
2471 | { | |
2472 | int pid = ptid_get_pid (process->head.id); | |
2473 | fprintf (stderr, " %d", pid); | |
2474 | } | |
2475 | } | |
2476 | ||
2477 | /* for_each_inferior callback for detach_or_kill_for_exit to print | |
2478 | the pids of attached inferiors. */ | |
2479 | ||
2480 | static void | |
2481 | print_attached_pid (struct inferior_list_entry *entry) | |
2482 | { | |
2483 | struct process_info *process = (struct process_info *) entry; | |
2484 | ||
2485 | if (process->attached) | |
2486 | { | |
2487 | int pid = ptid_get_pid (process->head.id); | |
2488 | fprintf (stderr, " %d", pid); | |
2489 | } | |
2490 | } | |
2491 | ||
2492 | /* Call this when exiting gdbserver with possible inferiors that need | |
2493 | to be killed or detached from. */ | |
2494 | ||
2495 | static void | |
2496 | detach_or_kill_for_exit (void) | |
2497 | { | |
2498 | /* First print a list of the inferiors we will be killing/detaching. | |
2499 | This is to assist the user, for example, in case the inferior unexpectedly | |
2500 | dies after we exit: did we screw up or did the inferior exit on its own? | |
2501 | Having this info will save some head-scratching. */ | |
2502 | ||
2503 | if (have_started_inferiors_p ()) | |
2504 | { | |
2505 | fprintf (stderr, "Killing process(es):"); | |
2506 | for_each_inferior (&all_processes, print_started_pid); | |
2507 | fprintf (stderr, "\n"); | |
2508 | } | |
2509 | if (have_attached_inferiors_p ()) | |
2510 | { | |
2511 | fprintf (stderr, "Detaching process(es):"); | |
2512 | for_each_inferior (&all_processes, print_attached_pid); | |
2513 | fprintf (stderr, "\n"); | |
2514 | } | |
2515 | ||
2516 | /* Now we can kill or detach the inferiors. */ | |
2517 | ||
2518 | for_each_inferior (&all_processes, detach_or_kill_inferior_callback); | |
2519 | } | |
2520 | ||
c906108c | 2521 | int |
da85418c | 2522 | main (int argc, char *argv[]) |
c906108c | 2523 | { |
0729219d DJ |
2524 | int bad_attach; |
2525 | int pid; | |
2d717e4f DJ |
2526 | char *arg_end, *port; |
2527 | char **next_arg = &argv[1]; | |
2528 | int multi_mode = 0; | |
2529 | int attach = 0; | |
2530 | int was_running; | |
c906108c | 2531 | |
2d717e4f | 2532 | while (*next_arg != NULL && **next_arg == '-') |
dd24457d | 2533 | { |
2d717e4f DJ |
2534 | if (strcmp (*next_arg, "--version") == 0) |
2535 | { | |
2536 | gdbserver_version (); | |
2537 | exit (0); | |
2538 | } | |
2539 | else if (strcmp (*next_arg, "--help") == 0) | |
2540 | { | |
c16158bc | 2541 | gdbserver_usage (stdout); |
2d717e4f DJ |
2542 | exit (0); |
2543 | } | |
2544 | else if (strcmp (*next_arg, "--attach") == 0) | |
2545 | attach = 1; | |
2546 | else if (strcmp (*next_arg, "--multi") == 0) | |
2547 | multi_mode = 1; | |
ccd213ac DJ |
2548 | else if (strcmp (*next_arg, "--wrapper") == 0) |
2549 | { | |
2550 | next_arg++; | |
2551 | ||
2552 | wrapper_argv = next_arg; | |
2553 | while (*next_arg != NULL && strcmp (*next_arg, "--") != 0) | |
2554 | next_arg++; | |
2555 | ||
2556 | if (next_arg == wrapper_argv || *next_arg == NULL) | |
2557 | { | |
c16158bc | 2558 | gdbserver_usage (stderr); |
ccd213ac DJ |
2559 | exit (1); |
2560 | } | |
2561 | ||
2562 | /* Consume the "--". */ | |
2563 | *next_arg = NULL; | |
2564 | } | |
2d717e4f DJ |
2565 | else if (strcmp (*next_arg, "--debug") == 0) |
2566 | debug_threads = 1; | |
62709adf PA |
2567 | else if (strcmp (*next_arg, "--remote-debug") == 0) |
2568 | remote_debug = 1; | |
db42f210 PA |
2569 | else if (strcmp (*next_arg, "--disable-packet") == 0) |
2570 | { | |
2571 | gdbserver_show_disableable (stdout); | |
2572 | exit (0); | |
2573 | } | |
2574 | else if (strncmp (*next_arg, | |
2575 | "--disable-packet=", | |
2576 | sizeof ("--disable-packet=") - 1) == 0) | |
2577 | { | |
2578 | char *packets, *tok; | |
2579 | ||
2580 | packets = *next_arg += sizeof ("--disable-packet=") - 1; | |
2581 | for (tok = strtok (packets, ","); | |
2582 | tok != NULL; | |
2583 | tok = strtok (NULL, ",")) | |
2584 | { | |
2585 | if (strcmp ("vCont", tok) == 0) | |
2586 | disable_packet_vCont = 1; | |
2587 | else if (strcmp ("Tthread", tok) == 0) | |
2588 | disable_packet_Tthread = 1; | |
2589 | else if (strcmp ("qC", tok) == 0) | |
2590 | disable_packet_qC = 1; | |
2591 | else if (strcmp ("qfThreadInfo", tok) == 0) | |
2592 | disable_packet_qfThreadInfo = 1; | |
2593 | else if (strcmp ("threads", tok) == 0) | |
2594 | { | |
2595 | disable_packet_vCont = 1; | |
2596 | disable_packet_Tthread = 1; | |
2597 | disable_packet_qC = 1; | |
2598 | disable_packet_qfThreadInfo = 1; | |
2599 | } | |
2600 | else | |
2601 | { | |
2602 | fprintf (stderr, "Don't know how to disable \"%s\".\n\n", | |
2603 | tok); | |
2604 | gdbserver_show_disableable (stderr); | |
2605 | exit (1); | |
2606 | } | |
2607 | } | |
2608 | } | |
e0f9f062 DE |
2609 | else if (strcmp (*next_arg, "-") == 0) |
2610 | { | |
2611 | /* "-" specifies a stdio connection and is a form of port | |
2612 | specification. */ | |
2613 | *next_arg = STDIO_CONNECTION_NAME; | |
2614 | break; | |
2615 | } | |
03583c20 UW |
2616 | else if (strcmp (*next_arg, "--disable-randomization") == 0) |
2617 | disable_randomization = 1; | |
2618 | else if (strcmp (*next_arg, "--no-disable-randomization") == 0) | |
2619 | disable_randomization = 0; | |
03f2bd59 JK |
2620 | else if (strcmp (*next_arg, "--once") == 0) |
2621 | run_once = 1; | |
2d717e4f DJ |
2622 | else |
2623 | { | |
2624 | fprintf (stderr, "Unknown argument: %s\n", *next_arg); | |
2625 | exit (1); | |
2626 | } | |
dd24457d | 2627 | |
2d717e4f DJ |
2628 | next_arg++; |
2629 | continue; | |
dd24457d DJ |
2630 | } |
2631 | ||
c5aa993b | 2632 | if (setjmp (toplevel)) |
c906108c | 2633 | { |
c5aa993b JM |
2634 | fprintf (stderr, "Exiting\n"); |
2635 | exit (1); | |
c906108c SS |
2636 | } |
2637 | ||
2d717e4f DJ |
2638 | port = *next_arg; |
2639 | next_arg++; | |
2640 | if (port == NULL || (!attach && !multi_mode && *next_arg == NULL)) | |
2641 | { | |
c16158bc | 2642 | gdbserver_usage (stderr); |
2d717e4f DJ |
2643 | exit (1); |
2644 | } | |
2645 | ||
e0f9f062 DE |
2646 | /* We need to know whether the remote connection is stdio before |
2647 | starting the inferior. Inferiors created in this scenario have | |
2648 | stdin,stdout redirected. So do this here before we call | |
2649 | start_inferior. */ | |
2650 | remote_prepare (port); | |
2651 | ||
0729219d DJ |
2652 | bad_attach = 0; |
2653 | pid = 0; | |
2d717e4f DJ |
2654 | |
2655 | /* --attach used to come after PORT, so allow it there for | |
2656 | compatibility. */ | |
2657 | if (*next_arg != NULL && strcmp (*next_arg, "--attach") == 0) | |
45b7b345 | 2658 | { |
2d717e4f DJ |
2659 | attach = 1; |
2660 | next_arg++; | |
45b7b345 DJ |
2661 | } |
2662 | ||
2d717e4f DJ |
2663 | if (attach |
2664 | && (*next_arg == NULL | |
2665 | || (*next_arg)[0] == '\0' | |
2666 | || (pid = strtoul (*next_arg, &arg_end, 0)) == 0 | |
2667 | || *arg_end != '\0' | |
2668 | || next_arg[1] != NULL)) | |
2669 | bad_attach = 1; | |
2670 | ||
2671 | if (bad_attach) | |
dd24457d | 2672 | { |
c16158bc | 2673 | gdbserver_usage (stderr); |
dd24457d DJ |
2674 | exit (1); |
2675 | } | |
c906108c | 2676 | |
a20d5e98 | 2677 | initialize_async_io (); |
4ce44c66 | 2678 | initialize_low (); |
219f2f23 PA |
2679 | if (target_supports_tracepoints ()) |
2680 | initialize_tracepoint (); | |
4ce44c66 | 2681 | |
bca929d3 DE |
2682 | own_buf = xmalloc (PBUFSIZ + 1); |
2683 | mem_buf = xmalloc (PBUFSIZ); | |
0a30fbc4 | 2684 | |
2d717e4f | 2685 | if (pid == 0 && *next_arg != NULL) |
45b7b345 | 2686 | { |
2d717e4f DJ |
2687 | int i, n; |
2688 | ||
2689 | n = argc - (next_arg - argv); | |
bca929d3 | 2690 | program_argv = xmalloc (sizeof (char *) * (n + 1)); |
2d717e4f | 2691 | for (i = 0; i < n; i++) |
bca929d3 | 2692 | program_argv[i] = xstrdup (next_arg[i]); |
2d717e4f DJ |
2693 | program_argv[i] = NULL; |
2694 | ||
45b7b345 | 2695 | /* Wait till we are at first instruction in program. */ |
5b1c542e | 2696 | start_inferior (program_argv); |
c906108c | 2697 | |
c588c53c MS |
2698 | /* We are now (hopefully) stopped at the first instruction of |
2699 | the target process. This assumes that the target process was | |
2700 | successfully created. */ | |
45b7b345 | 2701 | } |
2d717e4f DJ |
2702 | else if (pid != 0) |
2703 | { | |
5b1c542e | 2704 | if (attach_inferior (pid) == -1) |
2d717e4f DJ |
2705 | error ("Attaching not supported on this target"); |
2706 | ||
2707 | /* Otherwise succeeded. */ | |
2708 | } | |
45b7b345 DJ |
2709 | else |
2710 | { | |
5b1c542e PA |
2711 | last_status.kind = TARGET_WAITKIND_EXITED; |
2712 | last_status.value.integer = 0; | |
95954743 | 2713 | last_ptid = minus_one_ptid; |
45b7b345 | 2714 | } |
c906108c | 2715 | |
311de423 PA |
2716 | /* Don't report shared library events on the initial connection, |
2717 | even if some libraries are preloaded. Avoids the "stopped by | |
2718 | shared library event" notice on gdb side. */ | |
2719 | dlls_changed = 0; | |
2720 | ||
8264bb58 DJ |
2721 | if (setjmp (toplevel)) |
2722 | { | |
9f767825 | 2723 | detach_or_kill_for_exit (); |
8264bb58 DJ |
2724 | exit (1); |
2725 | } | |
2726 | ||
5b1c542e PA |
2727 | if (last_status.kind == TARGET_WAITKIND_EXITED |
2728 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2d717e4f DJ |
2729 | was_running = 0; |
2730 | else | |
2731 | was_running = 1; | |
2732 | ||
2733 | if (!was_running && !multi_mode) | |
c588c53c | 2734 | { |
2d717e4f | 2735 | fprintf (stderr, "No program to debug. GDBserver exiting.\n"); |
c588c53c MS |
2736 | exit (1); |
2737 | } | |
2738 | ||
c906108c SS |
2739 | while (1) |
2740 | { | |
a6f3e723 | 2741 | noack_mode = 0; |
95954743 | 2742 | multi_process = 0; |
8336d594 PA |
2743 | /* Be sure we're out of tfind mode. */ |
2744 | current_traceframe = -1; | |
bd99dc85 | 2745 | |
2d717e4f | 2746 | remote_open (port); |
c906108c | 2747 | |
2d717e4f DJ |
2748 | if (setjmp (toplevel) != 0) |
2749 | { | |
2750 | /* An error occurred. */ | |
2751 | if (response_needed) | |
2752 | { | |
2753 | write_enn (own_buf); | |
2754 | putpkt (own_buf); | |
2755 | } | |
2756 | } | |
2757 | ||
bd99dc85 | 2758 | /* Wait for events. This will return when all event sources are |
8336d594 | 2759 | removed from the event loop. */ |
bd99dc85 PA |
2760 | start_event_loop (); |
2761 | ||
2762 | /* If an exit was requested (using the "monitor exit" command), | |
2763 | terminate now. The only other way to get here is for | |
2764 | getpkt to fail; close the connection and reopen it at the | |
2765 | top of the loop. */ | |
2766 | ||
03f2bd59 | 2767 | if (exit_requested || run_once) |
c906108c | 2768 | { |
9f767825 | 2769 | detach_or_kill_for_exit (); |
bd99dc85 PA |
2770 | exit (0); |
2771 | } | |
8336d594 PA |
2772 | |
2773 | fprintf (stderr, | |
2774 | "Remote side has terminated connection. " | |
2775 | "GDBserver will reopen the connection.\n"); | |
2776 | ||
2777 | if (tracing) | |
2778 | { | |
2779 | if (disconnected_tracing) | |
2780 | { | |
2781 | /* Try to enable non-stop/async mode, so we we can both | |
2782 | wait for an async socket accept, and handle async | |
2783 | target events simultaneously. There's also no point | |
2784 | either in having the target always stop all threads, | |
2785 | when we're going to pass signals down without | |
2786 | informing GDB. */ | |
2787 | if (!non_stop) | |
2788 | { | |
2789 | if (start_non_stop (1)) | |
2790 | non_stop = 1; | |
2791 | ||
2792 | /* Detaching implicitly resumes all threads; simply | |
2793 | disconnecting does not. */ | |
2794 | } | |
2795 | } | |
2796 | else | |
2797 | { | |
2798 | fprintf (stderr, | |
2799 | "Disconnected tracing disabled; stopping trace run.\n"); | |
2800 | stop_tracing (); | |
2801 | } | |
2802 | } | |
bd99dc85 PA |
2803 | } |
2804 | } | |
01f9e8fa | 2805 | |
bd99dc85 PA |
2806 | /* Event loop callback that handles a serial event. The first byte in |
2807 | the serial buffer gets us here. We expect characters to arrive at | |
2808 | a brisk pace, so we read the rest of the packet with a blocking | |
2809 | getpkt call. */ | |
01f9e8fa | 2810 | |
8336d594 | 2811 | static int |
bd99dc85 PA |
2812 | process_serial_event (void) |
2813 | { | |
2814 | char ch; | |
2815 | int i = 0; | |
2816 | int signal; | |
2817 | unsigned int len; | |
764880b7 | 2818 | int res; |
bd99dc85 | 2819 | CORE_ADDR mem_addr; |
95954743 | 2820 | int pid; |
bd99dc85 PA |
2821 | unsigned char sig; |
2822 | int packet_len; | |
2823 | int new_packet_len = -1; | |
2824 | ||
2825 | /* Used to decide when gdbserver should exit in | |
2826 | multi-mode/remote. */ | |
2827 | static int have_ran = 0; | |
2828 | ||
2829 | if (!have_ran) | |
2830 | have_ran = target_running (); | |
2831 | ||
2832 | disable_async_io (); | |
2833 | ||
2834 | response_needed = 0; | |
2835 | packet_len = getpkt (own_buf); | |
2836 | if (packet_len <= 0) | |
2837 | { | |
bd99dc85 | 2838 | remote_close (); |
8336d594 PA |
2839 | /* Force an event loop break. */ |
2840 | return -1; | |
bd99dc85 PA |
2841 | } |
2842 | response_needed = 1; | |
2843 | ||
2844 | i = 0; | |
2845 | ch = own_buf[i++]; | |
2846 | switch (ch) | |
2847 | { | |
2848 | case 'q': | |
2849 | handle_query (own_buf, packet_len, &new_packet_len); | |
2850 | break; | |
2851 | case 'Q': | |
2852 | handle_general_set (own_buf); | |
2853 | break; | |
2854 | case 'D': | |
2855 | require_running (own_buf); | |
95954743 PA |
2856 | |
2857 | if (multi_process) | |
2858 | { | |
2859 | i++; /* skip ';' */ | |
2860 | pid = strtol (&own_buf[i], NULL, 16); | |
2861 | } | |
2862 | else | |
2863 | pid = | |
2864 | ptid_get_pid (((struct inferior_list_entry *) current_inferior)->id); | |
2865 | ||
8336d594 PA |
2866 | if (tracing && disconnected_tracing) |
2867 | { | |
2868 | struct thread_resume resume_info; | |
2869 | struct process_info *process = find_process_pid (pid); | |
2870 | ||
2871 | if (process == NULL) | |
2872 | { | |
2873 | write_enn (own_buf); | |
2874 | break; | |
2875 | } | |
2876 | ||
2877 | fprintf (stderr, | |
2878 | "Disconnected tracing in effect, " | |
2879 | "leaving gdbserver attached to the process\n"); | |
2880 | ||
2881 | /* Make sure we're in non-stop/async mode, so we we can both | |
2882 | wait for an async socket accept, and handle async target | |
2883 | events simultaneously. There's also no point either in | |
2884 | having the target stop all threads, when we're going to | |
2885 | pass signals down without informing GDB. */ | |
2886 | if (!non_stop) | |
2887 | { | |
2888 | if (debug_threads) | |
2889 | fprintf (stderr, "Forcing non-stop mode\n"); | |
2890 | ||
2891 | non_stop = 1; | |
2892 | start_non_stop (1); | |
2893 | } | |
2894 | ||
2895 | process->gdb_detached = 1; | |
2896 | ||
2897 | /* Detaching implicitly resumes all threads. */ | |
2898 | resume_info.thread = minus_one_ptid; | |
2899 | resume_info.kind = resume_continue; | |
2900 | resume_info.sig = 0; | |
2901 | (*the_target->resume) (&resume_info, 1); | |
2902 | ||
2903 | write_ok (own_buf); | |
2904 | break; /* from switch/case */ | |
2905 | } | |
2906 | ||
95954743 | 2907 | fprintf (stderr, "Detaching from process %d\n", pid); |
8336d594 | 2908 | stop_tracing (); |
95954743 | 2909 | if (detach_inferior (pid) != 0) |
bd99dc85 PA |
2910 | write_enn (own_buf); |
2911 | else | |
2912 | { | |
95954743 | 2913 | discard_queued_stop_replies (pid); |
bd99dc85 PA |
2914 | write_ok (own_buf); |
2915 | ||
2916 | if (extended_protocol) | |
c906108c | 2917 | { |
bd99dc85 PA |
2918 | /* Treat this like a normal program exit. */ |
2919 | last_status.kind = TARGET_WAITKIND_EXITED; | |
2920 | last_status.value.integer = 0; | |
95954743 | 2921 | last_ptid = pid_to_ptid (pid); |
2d717e4f | 2922 | |
bd99dc85 PA |
2923 | current_inferior = NULL; |
2924 | } | |
2925 | else | |
2926 | { | |
2927 | putpkt (own_buf); | |
2928 | remote_close (); | |
2929 | ||
2930 | /* If we are attached, then we can exit. Otherwise, we | |
2931 | need to hang around doing nothing, until the child is | |
2932 | gone. */ | |
71f55dd8 | 2933 | join_inferior (pid); |
bd99dc85 PA |
2934 | exit (0); |
2935 | } | |
2936 | } | |
2937 | break; | |
2938 | case '!': | |
2939 | extended_protocol = 1; | |
2940 | write_ok (own_buf); | |
2941 | break; | |
2942 | case '?': | |
2943 | handle_status (own_buf); | |
2944 | break; | |
2945 | case 'H': | |
2946 | if (own_buf[1] == 'c' || own_buf[1] == 'g' || own_buf[1] == 's') | |
2947 | { | |
95954743 PA |
2948 | ptid_t gdb_id, thread_id; |
2949 | int pid; | |
bd99dc85 PA |
2950 | |
2951 | require_running (own_buf); | |
95954743 PA |
2952 | |
2953 | gdb_id = read_ptid (&own_buf[2], NULL); | |
2954 | ||
2955 | pid = ptid_get_pid (gdb_id); | |
2956 | ||
2957 | if (ptid_equal (gdb_id, null_ptid) | |
2958 | || ptid_equal (gdb_id, minus_one_ptid)) | |
2959 | thread_id = null_ptid; | |
2960 | else if (pid != 0 | |
2961 | && ptid_equal (pid_to_ptid (pid), | |
2962 | gdb_id)) | |
2963 | { | |
2964 | struct thread_info *thread = | |
2965 | (struct thread_info *) find_inferior (&all_threads, | |
2966 | first_thread_of, | |
2967 | &pid); | |
2968 | if (!thread) | |
2969 | { | |
2970 | write_enn (own_buf); | |
2971 | break; | |
2972 | } | |
2973 | ||
2974 | thread_id = ((struct inferior_list_entry *)thread)->id; | |
2975 | } | |
bd99dc85 PA |
2976 | else |
2977 | { | |
2978 | thread_id = gdb_id_to_thread_id (gdb_id); | |
95954743 | 2979 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 2980 | { |
a06660f7 | 2981 | write_enn (own_buf); |
c906108c SS |
2982 | break; |
2983 | } | |
c906108c SS |
2984 | } |
2985 | ||
bd99dc85 | 2986 | if (own_buf[1] == 'g') |
c906108c | 2987 | { |
95954743 | 2988 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 2989 | { |
bd99dc85 PA |
2990 | /* GDB is telling us to choose any thread. Check if |
2991 | the currently selected thread is still valid. If | |
2992 | it is not, select the first available. */ | |
2993 | struct thread_info *thread = | |
2994 | (struct thread_info *) find_inferior_id (&all_threads, | |
2995 | general_thread); | |
2996 | if (thread == NULL) | |
2997 | thread_id = all_threads.head->id; | |
c906108c | 2998 | } |
bd99dc85 PA |
2999 | |
3000 | general_thread = thread_id; | |
3001 | set_desired_inferior (1); | |
c906108c | 3002 | } |
bd99dc85 PA |
3003 | else if (own_buf[1] == 'c') |
3004 | cont_thread = thread_id; | |
c906108c | 3005 | |
bd99dc85 PA |
3006 | write_ok (own_buf); |
3007 | } | |
3008 | else | |
3009 | { | |
3010 | /* Silently ignore it so that gdb can extend the protocol | |
3011 | without compatibility headaches. */ | |
3012 | own_buf[0] = '\0'; | |
2d717e4f | 3013 | } |
bd99dc85 PA |
3014 | break; |
3015 | case 'g': | |
219f2f23 PA |
3016 | require_running (own_buf); |
3017 | if (current_traceframe >= 0) | |
3018 | { | |
3019 | struct regcache *regcache = new_register_cache (); | |
3020 | ||
3021 | if (fetch_traceframe_registers (current_traceframe, | |
3022 | regcache, -1) == 0) | |
3023 | registers_to_string (regcache, own_buf); | |
3024 | else | |
3025 | write_enn (own_buf); | |
3026 | free_register_cache (regcache); | |
3027 | } | |
3028 | else | |
3029 | { | |
3030 | struct regcache *regcache; | |
3031 | ||
3032 | set_desired_inferior (1); | |
3033 | regcache = get_thread_regcache (current_inferior, 1); | |
3034 | registers_to_string (regcache, own_buf); | |
3035 | } | |
bd99dc85 PA |
3036 | break; |
3037 | case 'G': | |
219f2f23 PA |
3038 | require_running (own_buf); |
3039 | if (current_traceframe >= 0) | |
3040 | write_enn (own_buf); | |
3041 | else | |
3042 | { | |
442ea881 PA |
3043 | struct regcache *regcache; |
3044 | ||
442ea881 PA |
3045 | set_desired_inferior (1); |
3046 | regcache = get_thread_regcache (current_inferior, 1); | |
3047 | registers_from_string (regcache, &own_buf[1]); | |
3048 | write_ok (own_buf); | |
3049 | } | |
bd99dc85 PA |
3050 | break; |
3051 | case 'm': | |
3052 | require_running (own_buf); | |
3053 | decode_m_packet (&own_buf[1], &mem_addr, &len); | |
764880b7 PA |
3054 | res = gdb_read_memory (mem_addr, mem_buf, len); |
3055 | if (res < 0) | |
bd99dc85 | 3056 | write_enn (own_buf); |
764880b7 PA |
3057 | else |
3058 | convert_int_to_ascii (mem_buf, own_buf, res); | |
bd99dc85 PA |
3059 | break; |
3060 | case 'M': | |
3061 | require_running (own_buf); | |
fa593d66 | 3062 | decode_M_packet (&own_buf[1], &mem_addr, &len, &mem_buf); |
90d74c30 | 3063 | if (gdb_write_memory (mem_addr, mem_buf, len) == 0) |
bd99dc85 PA |
3064 | write_ok (own_buf); |
3065 | else | |
3066 | write_enn (own_buf); | |
3067 | break; | |
3068 | case 'X': | |
3069 | require_running (own_buf); | |
3070 | if (decode_X_packet (&own_buf[1], packet_len - 1, | |
fa593d66 | 3071 | &mem_addr, &len, &mem_buf) < 0 |
90d74c30 | 3072 | || gdb_write_memory (mem_addr, mem_buf, len) != 0) |
bd99dc85 PA |
3073 | write_enn (own_buf); |
3074 | else | |
3075 | write_ok (own_buf); | |
3076 | break; | |
3077 | case 'C': | |
3078 | require_running (own_buf); | |
3079 | convert_ascii_to_int (own_buf + 1, &sig, 1); | |
3080 | if (target_signal_to_host_p (sig)) | |
3081 | signal = target_signal_to_host (sig); | |
3082 | else | |
3083 | signal = 0; | |
3084 | myresume (own_buf, 0, signal); | |
3085 | break; | |
3086 | case 'S': | |
3087 | require_running (own_buf); | |
3088 | convert_ascii_to_int (own_buf + 1, &sig, 1); | |
3089 | if (target_signal_to_host_p (sig)) | |
3090 | signal = target_signal_to_host (sig); | |
3091 | else | |
3092 | signal = 0; | |
3093 | myresume (own_buf, 1, signal); | |
3094 | break; | |
3095 | case 'c': | |
3096 | require_running (own_buf); | |
3097 | signal = 0; | |
3098 | myresume (own_buf, 0, signal); | |
3099 | break; | |
3100 | case 's': | |
3101 | require_running (own_buf); | |
3102 | signal = 0; | |
3103 | myresume (own_buf, 1, signal); | |
3104 | break; | |
c6314022 AR |
3105 | case 'Z': /* insert_ ... */ |
3106 | /* Fallthrough. */ | |
3107 | case 'z': /* remove_ ... */ | |
bd99dc85 PA |
3108 | { |
3109 | char *lenptr; | |
3110 | char *dataptr; | |
3111 | CORE_ADDR addr = strtoul (&own_buf[3], &lenptr, 16); | |
3112 | int len = strtol (lenptr + 1, &dataptr, 16); | |
3113 | char type = own_buf[1]; | |
c6314022 | 3114 | int res; |
d993e290 | 3115 | const int insert = ch == 'Z'; |
c6314022 | 3116 | |
d993e290 PA |
3117 | /* Default to unrecognized/unsupported. */ |
3118 | res = 1; | |
3119 | switch (type) | |
3120 | { | |
3121 | case '0': /* software-breakpoint */ | |
3122 | case '1': /* hardware-breakpoint */ | |
3123 | case '2': /* write watchpoint */ | |
3124 | case '3': /* read watchpoint */ | |
3125 | case '4': /* access watchpoint */ | |
3126 | require_running (own_buf); | |
3127 | if (insert && the_target->insert_point != NULL) | |
3128 | res = (*the_target->insert_point) (type, addr, len); | |
3129 | else if (!insert && the_target->remove_point != NULL) | |
3130 | res = (*the_target->remove_point) (type, addr, len); | |
3131 | break; | |
3132 | default: | |
3133 | break; | |
3134 | } | |
bd99dc85 | 3135 | |
c6314022 AR |
3136 | if (res == 0) |
3137 | write_ok (own_buf); | |
3138 | else if (res == 1) | |
3139 | /* Unsupported. */ | |
3140 | own_buf[0] = '\0'; | |
bd99dc85 | 3141 | else |
c6314022 | 3142 | write_enn (own_buf); |
bd99dc85 PA |
3143 | break; |
3144 | } | |
3145 | case 'k': | |
3146 | response_needed = 0; | |
3147 | if (!target_running ()) | |
95954743 PA |
3148 | /* The packet we received doesn't make sense - but we can't |
3149 | reply to it, either. */ | |
8336d594 | 3150 | return 0; |
c906108c | 3151 | |
95954743 PA |
3152 | fprintf (stderr, "Killing all inferiors\n"); |
3153 | for_each_inferior (&all_processes, kill_inferior_callback); | |
c906108c | 3154 | |
bd99dc85 PA |
3155 | /* When using the extended protocol, we wait with no program |
3156 | running. The traditional protocol will exit instead. */ | |
3157 | if (extended_protocol) | |
3158 | { | |
3159 | last_status.kind = TARGET_WAITKIND_EXITED; | |
3160 | last_status.value.sig = TARGET_SIGNAL_KILL; | |
8336d594 | 3161 | return 0; |
bd99dc85 PA |
3162 | } |
3163 | else | |
8336d594 PA |
3164 | exit (0); |
3165 | ||
bd99dc85 PA |
3166 | case 'T': |
3167 | { | |
95954743 | 3168 | ptid_t gdb_id, thread_id; |
bd99dc85 PA |
3169 | |
3170 | require_running (own_buf); | |
95954743 PA |
3171 | |
3172 | gdb_id = read_ptid (&own_buf[1], NULL); | |
bd99dc85 | 3173 | thread_id = gdb_id_to_thread_id (gdb_id); |
95954743 | 3174 | if (ptid_equal (thread_id, null_ptid)) |
bd99dc85 PA |
3175 | { |
3176 | write_enn (own_buf); | |
3177 | break; | |
3178 | } | |
3179 | ||
3180 | if (mythread_alive (thread_id)) | |
3181 | write_ok (own_buf); | |
3182 | else | |
3183 | write_enn (own_buf); | |
3184 | } | |
3185 | break; | |
3186 | case 'R': | |
3187 | response_needed = 0; | |
3188 | ||
3189 | /* Restarting the inferior is only supported in the extended | |
3190 | protocol. */ | |
3191 | if (extended_protocol) | |
3192 | { | |
3193 | if (target_running ()) | |
95954743 PA |
3194 | for_each_inferior (&all_processes, |
3195 | kill_inferior_callback); | |
bd99dc85 PA |
3196 | fprintf (stderr, "GDBserver restarting\n"); |
3197 | ||
3198 | /* Wait till we are at 1st instruction in prog. */ | |
3199 | if (program_argv != NULL) | |
3200 | start_inferior (program_argv); | |
3201 | else | |
3202 | { | |
3203 | last_status.kind = TARGET_WAITKIND_EXITED; | |
3204 | last_status.value.sig = TARGET_SIGNAL_KILL; | |
3205 | } | |
8336d594 | 3206 | return 0; |
c906108c SS |
3207 | } |
3208 | else | |
3209 | { | |
bd99dc85 PA |
3210 | /* It is a request we don't understand. Respond with an |
3211 | empty packet so that gdb knows that we don't support this | |
3212 | request. */ | |
3213 | own_buf[0] = '\0'; | |
3214 | break; | |
3215 | } | |
3216 | case 'v': | |
3217 | /* Extended (long) request. */ | |
3218 | handle_v_requests (own_buf, packet_len, &new_packet_len); | |
3219 | break; | |
3220 | ||
3221 | default: | |
3222 | /* It is a request we don't understand. Respond with an empty | |
3223 | packet so that gdb knows that we don't support this | |
3224 | request. */ | |
3225 | own_buf[0] = '\0'; | |
3226 | break; | |
3227 | } | |
3228 | ||
3229 | if (new_packet_len != -1) | |
3230 | putpkt_binary (own_buf, new_packet_len); | |
3231 | else | |
3232 | putpkt (own_buf); | |
3233 | ||
3234 | response_needed = 0; | |
3235 | ||
3236 | if (!extended_protocol && have_ran && !target_running ()) | |
3237 | { | |
3238 | /* In non-stop, defer exiting until GDB had a chance to query | |
3239 | the whole vStopped list (until it gets an OK). */ | |
3240 | if (!notif_queue) | |
3241 | { | |
3242 | fprintf (stderr, "GDBserver exiting\n"); | |
c906108c | 3243 | remote_close (); |
bd99dc85 | 3244 | exit (0); |
c906108c SS |
3245 | } |
3246 | } | |
8336d594 PA |
3247 | |
3248 | if (exit_requested) | |
3249 | return -1; | |
3250 | ||
3251 | return 0; | |
c906108c | 3252 | } |
bd99dc85 PA |
3253 | |
3254 | /* Event-loop callback for serial events. */ | |
3255 | ||
8336d594 | 3256 | int |
bd99dc85 PA |
3257 | handle_serial_event (int err, gdb_client_data client_data) |
3258 | { | |
3259 | if (debug_threads) | |
3260 | fprintf (stderr, "handling possible serial event\n"); | |
3261 | ||
3262 | /* Really handle it. */ | |
8336d594 PA |
3263 | if (process_serial_event () < 0) |
3264 | return -1; | |
bd99dc85 PA |
3265 | |
3266 | /* Be sure to not change the selected inferior behind GDB's back. | |
3267 | Important in the non-stop mode asynchronous protocol. */ | |
3268 | set_desired_inferior (1); | |
8336d594 PA |
3269 | |
3270 | return 0; | |
bd99dc85 PA |
3271 | } |
3272 | ||
3273 | /* Event-loop callback for target events. */ | |
3274 | ||
8336d594 | 3275 | int |
bd99dc85 PA |
3276 | handle_target_event (int err, gdb_client_data client_data) |
3277 | { | |
3278 | if (debug_threads) | |
3279 | fprintf (stderr, "handling possible target event\n"); | |
3280 | ||
95954743 PA |
3281 | last_ptid = mywait (minus_one_ptid, &last_status, |
3282 | TARGET_WNOHANG, 1); | |
bd99dc85 PA |
3283 | |
3284 | if (last_status.kind != TARGET_WAITKIND_IGNORE) | |
3285 | { | |
8336d594 PA |
3286 | int pid = ptid_get_pid (last_ptid); |
3287 | struct process_info *process = find_process_pid (pid); | |
3288 | int forward_event = !gdb_connected () || process->gdb_detached; | |
3289 | ||
3290 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
3291 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
f9e39928 PA |
3292 | { |
3293 | mark_breakpoints_out (process); | |
3294 | mourn_inferior (process); | |
3295 | } | |
ce1a5b52 | 3296 | else |
d20a8ad9 PA |
3297 | { |
3298 | /* We're reporting this thread as stopped. Update its | |
3299 | "want-stopped" state to what the client wants, until it | |
3300 | gets a new resume action. */ | |
3301 | current_inferior->last_resume_kind = resume_stop; | |
3302 | current_inferior->last_status = last_status; | |
3303 | } | |
8336d594 PA |
3304 | |
3305 | if (forward_event) | |
3306 | { | |
3307 | if (!target_running ()) | |
3308 | { | |
3309 | /* The last process exited. We're done. */ | |
3310 | exit (0); | |
3311 | } | |
3312 | ||
3313 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
3314 | { | |
3315 | /* A thread stopped with a signal, but gdb isn't | |
3316 | connected to handle it. Pass it down to the | |
3317 | inferior, as if it wasn't being traced. */ | |
3318 | struct thread_resume resume_info; | |
3319 | ||
3320 | if (debug_threads) | |
3321 | fprintf (stderr, | |
3322 | "GDB not connected; forwarding event %d for [%s]\n", | |
3323 | (int) last_status.kind, | |
3324 | target_pid_to_str (last_ptid)); | |
3325 | ||
3326 | resume_info.thread = last_ptid; | |
3327 | resume_info.kind = resume_continue; | |
30d50328 | 3328 | resume_info.sig = target_signal_to_host (last_status.value.sig); |
8336d594 PA |
3329 | (*the_target->resume) (&resume_info, 1); |
3330 | } | |
3331 | else if (debug_threads) | |
3332 | fprintf (stderr, "GDB not connected; ignoring event %d for [%s]\n", | |
3333 | (int) last_status.kind, | |
3334 | target_pid_to_str (last_ptid)); | |
3335 | } | |
3336 | else | |
3337 | { | |
3338 | /* Something interesting. Tell GDB about it. */ | |
3339 | push_event (last_ptid, &last_status); | |
3340 | } | |
bd99dc85 PA |
3341 | } |
3342 | ||
3343 | /* Be sure to not change the selected inferior behind GDB's back. | |
3344 | Important in the non-stop mode asynchronous protocol. */ | |
3345 | set_desired_inferior (1); | |
8336d594 PA |
3346 | |
3347 | return 0; | |
bd99dc85 | 3348 | } |