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