Commit | Line | Data |
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c906108c | 1 | /* Main code for remote server for GDB. |
0b302171 JB |
2 | Copyright (C) 1989, 1993-1995, 1997-2000, 2002-2012 Free Software |
3 | Foundation, Inc. | |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "server.h" | |
21 | ||
68070c10 | 22 | #if HAVE_UNISTD_H |
a9fa9f7d | 23 | #include <unistd.h> |
68070c10 PA |
24 | #endif |
25 | #if HAVE_SIGNAL_H | |
a9fa9f7d | 26 | #include <signal.h> |
68070c10 | 27 | #endif |
b80864fb | 28 | #if HAVE_SYS_WAIT_H |
a9fa9f7d | 29 | #include <sys/wait.h> |
b80864fb | 30 | #endif |
a9fa9f7d | 31 | |
95954743 PA |
32 | ptid_t cont_thread; |
33 | ptid_t general_thread; | |
5b1c542e | 34 | |
0d62e5e8 DJ |
35 | int server_waiting; |
36 | ||
2d717e4f | 37 | static int extended_protocol; |
2d717e4f DJ |
38 | static int response_needed; |
39 | static int exit_requested; | |
40 | ||
03f2bd59 JK |
41 | /* --once: Exit after the first connection has closed. */ |
42 | int run_once; | |
43 | ||
95954743 | 44 | int multi_process; |
bd99dc85 PA |
45 | int non_stop; |
46 | ||
03583c20 UW |
47 | /* Whether we should attempt to disable the operating system's address |
48 | space randomization feature before starting an inferior. */ | |
49 | int disable_randomization = 1; | |
50 | ||
ccd213ac | 51 | static char **program_argv, **wrapper_argv; |
2d717e4f | 52 | |
c74d0ad8 DJ |
53 | /* Enable miscellaneous debugging output. The name is historical - it |
54 | was originally used to debug LinuxThreads support. */ | |
55 | int debug_threads; | |
56 | ||
aa5ca48f DE |
57 | /* Enable debugging of h/w breakpoint/watchpoint support. */ |
58 | int debug_hw_points; | |
59 | ||
89be2091 DJ |
60 | int pass_signals[TARGET_SIGNAL_LAST]; |
61 | ||
c906108c | 62 | jmp_buf toplevel; |
c906108c | 63 | |
9b4b61c8 UW |
64 | const char *gdbserver_xmltarget; |
65 | ||
a9fa9f7d DJ |
66 | /* The PID of the originally created or attached inferior. Used to |
67 | send signals to the process when GDB sends us an asynchronous interrupt | |
68 | (user hitting Control-C in the client), and to wait for the child to exit | |
69 | when no longer debugging it. */ | |
70 | ||
a1928bad | 71 | unsigned long signal_pid; |
a9fa9f7d | 72 | |
290fadea RS |
73 | #ifdef SIGTTOU |
74 | /* A file descriptor for the controlling terminal. */ | |
75 | int terminal_fd; | |
76 | ||
77 | /* TERMINAL_FD's original foreground group. */ | |
78 | pid_t old_foreground_pgrp; | |
79 | ||
80 | /* Hand back terminal ownership to the original foreground group. */ | |
81 | ||
82 | static void | |
83 | restore_old_foreground_pgrp (void) | |
84 | { | |
85 | tcsetpgrp (terminal_fd, old_foreground_pgrp); | |
86 | } | |
87 | #endif | |
88 | ||
ec56be1b PA |
89 | /* Set if you want to disable optional thread related packets support |
90 | in gdbserver, for the sake of testing GDB against stubs that don't | |
91 | support them. */ | |
92 | int disable_packet_vCont; | |
93 | int disable_packet_Tthread; | |
94 | int disable_packet_qC; | |
95 | int disable_packet_qfThreadInfo; | |
96 | ||
5b1c542e PA |
97 | /* Last status reported to GDB. */ |
98 | static struct target_waitstatus last_status; | |
95954743 | 99 | static ptid_t last_ptid; |
5b1c542e | 100 | |
bd99dc85 PA |
101 | static char *own_buf; |
102 | static unsigned char *mem_buf; | |
103 | ||
104 | /* Structure holding information relative to a single stop reply. We | |
105 | keep a queue of these (really a singly-linked list) to push to GDB | |
106 | in non-stop mode. */ | |
107 | struct vstop_notif | |
108 | { | |
109 | /* Pointer to next in list. */ | |
110 | struct vstop_notif *next; | |
111 | ||
112 | /* Thread or process that got the event. */ | |
95954743 | 113 | ptid_t ptid; |
bd99dc85 PA |
114 | |
115 | /* Event info. */ | |
116 | struct target_waitstatus status; | |
117 | }; | |
118 | ||
119 | /* The pending stop replies list head. */ | |
120 | static struct vstop_notif *notif_queue = NULL; | |
121 | ||
122 | /* Put a stop reply to the stop reply queue. */ | |
123 | ||
124 | static void | |
95954743 | 125 | queue_stop_reply (ptid_t ptid, struct target_waitstatus *status) |
bd99dc85 PA |
126 | { |
127 | struct vstop_notif *new_notif; | |
128 | ||
cfdee94a | 129 | new_notif = xmalloc (sizeof (*new_notif)); |
bd99dc85 PA |
130 | new_notif->next = NULL; |
131 | new_notif->ptid = ptid; | |
132 | new_notif->status = *status; | |
133 | ||
134 | if (notif_queue) | |
135 | { | |
136 | struct vstop_notif *tail; | |
137 | for (tail = notif_queue; | |
138 | tail && tail->next; | |
139 | tail = tail->next) | |
140 | ; | |
141 | tail->next = new_notif; | |
142 | } | |
143 | else | |
144 | notif_queue = new_notif; | |
145 | ||
146 | if (remote_debug) | |
147 | { | |
148 | int i = 0; | |
149 | struct vstop_notif *n; | |
150 | ||
151 | for (n = notif_queue; n; n = n->next) | |
152 | i++; | |
153 | ||
154 | fprintf (stderr, "pending stop replies: %d\n", i); | |
155 | } | |
156 | } | |
157 | ||
158 | /* Place an event in the stop reply queue, and push a notification if | |
159 | we aren't sending one yet. */ | |
160 | ||
161 | void | |
95954743 | 162 | push_event (ptid_t ptid, struct target_waitstatus *status) |
bd99dc85 | 163 | { |
d20a8ad9 PA |
164 | gdb_assert (status->kind != TARGET_WAITKIND_IGNORE); |
165 | ||
bd99dc85 PA |
166 | queue_stop_reply (ptid, status); |
167 | ||
168 | /* If this is the first stop reply in the queue, then inform GDB | |
169 | about it, by sending a Stop notification. */ | |
170 | if (notif_queue->next == NULL) | |
171 | { | |
172 | char *p = own_buf; | |
173 | strcpy (p, "Stop:"); | |
174 | p += strlen (p); | |
175 | prepare_resume_reply (p, | |
176 | notif_queue->ptid, ¬if_queue->status); | |
177 | putpkt_notif (own_buf); | |
178 | } | |
179 | } | |
180 | ||
95954743 PA |
181 | /* Get rid of the currently pending stop replies for PID. If PID is |
182 | -1, then apply to all processes. */ | |
bd99dc85 PA |
183 | |
184 | static void | |
95954743 | 185 | discard_queued_stop_replies (int pid) |
bd99dc85 | 186 | { |
95954743 | 187 | struct vstop_notif *prev = NULL, *reply, *next; |
bd99dc85 | 188 | |
95954743 | 189 | for (reply = notif_queue; reply; reply = next) |
bd99dc85 | 190 | { |
95954743 PA |
191 | next = reply->next; |
192 | ||
193 | if (pid == -1 | |
194 | || ptid_get_pid (reply->ptid) == pid) | |
195 | { | |
196 | if (reply == notif_queue) | |
197 | notif_queue = next; | |
198 | else | |
199 | prev->next = reply->next; | |
bd99dc85 | 200 | |
95954743 PA |
201 | free (reply); |
202 | } | |
203 | else | |
204 | prev = reply; | |
bd99dc85 PA |
205 | } |
206 | } | |
207 | ||
208 | /* If there are more stop replies to push, push one now. */ | |
209 | ||
210 | static void | |
211 | send_next_stop_reply (char *own_buf) | |
212 | { | |
213 | if (notif_queue) | |
214 | prepare_resume_reply (own_buf, | |
215 | notif_queue->ptid, | |
216 | ¬if_queue->status); | |
217 | else | |
218 | write_ok (own_buf); | |
219 | } | |
220 | ||
2d717e4f DJ |
221 | static int |
222 | target_running (void) | |
223 | { | |
224 | return all_threads.head != NULL; | |
225 | } | |
226 | ||
fc620387 | 227 | static int |
5b1c542e | 228 | start_inferior (char **argv) |
c906108c | 229 | { |
ccd213ac | 230 | char **new_argv = argv; |
2d717e4f | 231 | |
ccd213ac DJ |
232 | if (wrapper_argv != NULL) |
233 | { | |
234 | int i, count = 1; | |
235 | ||
236 | for (i = 0; wrapper_argv[i] != NULL; i++) | |
237 | count++; | |
238 | for (i = 0; argv[i] != NULL; i++) | |
239 | count++; | |
240 | new_argv = alloca (sizeof (char *) * count); | |
241 | count = 0; | |
242 | for (i = 0; wrapper_argv[i] != NULL; i++) | |
243 | new_argv[count++] = wrapper_argv[i]; | |
244 | for (i = 0; argv[i] != NULL; i++) | |
245 | new_argv[count++] = argv[i]; | |
246 | new_argv[count] = NULL; | |
247 | } | |
248 | ||
65730243 DE |
249 | if (debug_threads) |
250 | { | |
251 | int i; | |
252 | for (i = 0; new_argv[i]; ++i) | |
253 | fprintf (stderr, "new_argv[%d] = \"%s\"\n", i, new_argv[i]); | |
254 | fflush (stderr); | |
255 | } | |
256 | ||
b80864fb | 257 | #ifdef SIGTTOU |
a9fa9f7d DJ |
258 | signal (SIGTTOU, SIG_DFL); |
259 | signal (SIGTTIN, SIG_DFL); | |
b80864fb | 260 | #endif |
a9fa9f7d | 261 | |
ccd213ac | 262 | signal_pid = create_inferior (new_argv[0], new_argv); |
0d62e5e8 | 263 | |
c588c53c MS |
264 | /* FIXME: we don't actually know at this point that the create |
265 | actually succeeded. We won't know that until we wait. */ | |
a1928bad | 266 | fprintf (stderr, "Process %s created; pid = %ld\n", argv[0], |
a9fa9f7d | 267 | signal_pid); |
b80864fb | 268 | fflush (stderr); |
a9fa9f7d | 269 | |
b80864fb | 270 | #ifdef SIGTTOU |
a9fa9f7d DJ |
271 | signal (SIGTTOU, SIG_IGN); |
272 | signal (SIGTTIN, SIG_IGN); | |
290fadea RS |
273 | terminal_fd = fileno (stderr); |
274 | old_foreground_pgrp = tcgetpgrp (terminal_fd); | |
275 | tcsetpgrp (terminal_fd, signal_pid); | |
276 | atexit (restore_old_foreground_pgrp); | |
b80864fb | 277 | #endif |
c906108c | 278 | |
ccd213ac DJ |
279 | if (wrapper_argv != NULL) |
280 | { | |
281 | struct thread_resume resume_info; | |
ccd213ac | 282 | |
95954743 | 283 | resume_info.thread = pid_to_ptid (signal_pid); |
bd99dc85 | 284 | resume_info.kind = resume_continue; |
ccd213ac | 285 | resume_info.sig = 0; |
ccd213ac | 286 | |
32fcada3 | 287 | mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
bd99dc85 | 288 | |
5b1c542e PA |
289 | if (last_status.kind != TARGET_WAITKIND_STOPPED) |
290 | return signal_pid; | |
ccd213ac DJ |
291 | |
292 | do | |
293 | { | |
2bd7c093 | 294 | (*the_target->resume) (&resume_info, 1); |
ccd213ac | 295 | |
95954743 | 296 | mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
5b1c542e PA |
297 | if (last_status.kind != TARGET_WAITKIND_STOPPED) |
298 | return signal_pid; | |
d20a8ad9 PA |
299 | |
300 | current_inferior->last_resume_kind = resume_stop; | |
301 | current_inferior->last_status = last_status; | |
ccd213ac | 302 | } |
5b1c542e | 303 | while (last_status.value.sig != TARGET_SIGNAL_TRAP); |
ccd213ac | 304 | |
d20a8ad9 PA |
305 | current_inferior->last_resume_kind = resume_stop; |
306 | current_inferior->last_status = last_status; | |
5b1c542e | 307 | return signal_pid; |
ccd213ac DJ |
308 | } |
309 | ||
5b1c542e PA |
310 | /* Wait till we are at 1st instruction in program, return new pid |
311 | (assuming success). */ | |
95954743 | 312 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
5b1c542e | 313 | |
d20a8ad9 PA |
314 | if (last_status.kind != TARGET_WAITKIND_EXITED |
315 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
316 | { | |
317 | current_inferior->last_resume_kind = resume_stop; | |
318 | current_inferior->last_status = last_status; | |
319 | } | |
320 | ||
5b1c542e | 321 | return signal_pid; |
c906108c SS |
322 | } |
323 | ||
45b7b345 | 324 | static int |
5b1c542e | 325 | attach_inferior (int pid) |
45b7b345 DJ |
326 | { |
327 | /* myattach should return -1 if attaching is unsupported, | |
328 | 0 if it succeeded, and call error() otherwise. */ | |
a9fa9f7d | 329 | |
45b7b345 DJ |
330 | if (myattach (pid) != 0) |
331 | return -1; | |
332 | ||
6910d122 | 333 | fprintf (stderr, "Attached; pid = %d\n", pid); |
b80864fb | 334 | fflush (stderr); |
6910d122 | 335 | |
a9fa9f7d DJ |
336 | /* FIXME - It may be that we should get the SIGNAL_PID from the |
337 | attach function, so that it can be the main thread instead of | |
338 | whichever we were told to attach to. */ | |
339 | signal_pid = pid; | |
340 | ||
bd99dc85 PA |
341 | if (!non_stop) |
342 | { | |
95954743 | 343 | last_ptid = mywait (pid_to_ptid (pid), &last_status, 0, 0); |
bd99dc85 PA |
344 | |
345 | /* GDB knows to ignore the first SIGSTOP after attaching to a running | |
346 | process using the "attach" command, but this is different; it's | |
347 | just using "target remote". Pretend it's just starting up. */ | |
348 | if (last_status.kind == TARGET_WAITKIND_STOPPED | |
349 | && last_status.value.sig == TARGET_SIGNAL_STOP) | |
350 | last_status.value.sig = TARGET_SIGNAL_TRAP; | |
d20a8ad9 PA |
351 | |
352 | current_inferior->last_resume_kind = resume_stop; | |
353 | current_inferior->last_status = last_status; | |
bd99dc85 | 354 | } |
9db87ebd | 355 | |
45b7b345 DJ |
356 | return 0; |
357 | } | |
358 | ||
c906108c | 359 | extern int remote_debug; |
ce3a066d | 360 | |
0876f84a DJ |
361 | /* Decode a qXfer read request. Return 0 if everything looks OK, |
362 | or -1 otherwise. */ | |
363 | ||
364 | static int | |
d08aafef | 365 | decode_xfer_read (char *buf, CORE_ADDR *ofs, unsigned int *len) |
0876f84a | 366 | { |
d08aafef PA |
367 | /* After the read marker and annex, qXfer looks like a |
368 | traditional 'm' packet. */ | |
369 | decode_m_packet (buf, ofs, len); | |
370 | ||
371 | return 0; | |
372 | } | |
373 | ||
374 | static int | |
375 | decode_xfer (char *buf, char **object, char **rw, char **annex, char **offset) | |
376 | { | |
377 | /* Extract and NUL-terminate the object. */ | |
378 | *object = buf; | |
379 | while (*buf && *buf != ':') | |
380 | buf++; | |
381 | if (*buf == '\0') | |
382 | return -1; | |
383 | *buf++ = 0; | |
384 | ||
385 | /* Extract and NUL-terminate the read/write action. */ | |
386 | *rw = buf; | |
387 | while (*buf && *buf != ':') | |
388 | buf++; | |
389 | if (*buf == '\0') | |
390 | return -1; | |
391 | *buf++ = 0; | |
392 | ||
0876f84a DJ |
393 | /* Extract and NUL-terminate the annex. */ |
394 | *annex = buf; | |
395 | while (*buf && *buf != ':') | |
396 | buf++; | |
397 | if (*buf == '\0') | |
398 | return -1; | |
399 | *buf++ = 0; | |
400 | ||
d08aafef | 401 | *offset = buf; |
0876f84a DJ |
402 | return 0; |
403 | } | |
404 | ||
405 | /* Write the response to a successful qXfer read. Returns the | |
406 | length of the (binary) data stored in BUF, corresponding | |
407 | to as much of DATA/LEN as we could fit. IS_MORE controls | |
408 | the first character of the response. */ | |
409 | static int | |
23181151 | 410 | write_qxfer_response (char *buf, const void *data, int len, int is_more) |
0876f84a DJ |
411 | { |
412 | int out_len; | |
413 | ||
414 | if (is_more) | |
415 | buf[0] = 'm'; | |
416 | else | |
417 | buf[0] = 'l'; | |
418 | ||
419 | return remote_escape_output (data, len, (unsigned char *) buf + 1, &out_len, | |
420 | PBUFSIZ - 2) + 1; | |
421 | } | |
422 | ||
89be2091 | 423 | /* Handle all of the extended 'Q' packets. */ |
ae1ada35 DE |
424 | |
425 | static void | |
89be2091 DJ |
426 | handle_general_set (char *own_buf) |
427 | { | |
428 | if (strncmp ("QPassSignals:", own_buf, strlen ("QPassSignals:")) == 0) | |
429 | { | |
430 | int numsigs = (int) TARGET_SIGNAL_LAST, i; | |
431 | const char *p = own_buf + strlen ("QPassSignals:"); | |
432 | CORE_ADDR cursig; | |
433 | ||
434 | p = decode_address_to_semicolon (&cursig, p); | |
435 | for (i = 0; i < numsigs; i++) | |
436 | { | |
437 | if (i == cursig) | |
438 | { | |
439 | pass_signals[i] = 1; | |
440 | if (*p == '\0') | |
441 | /* Keep looping, to clear the remaining signals. */ | |
442 | cursig = -1; | |
443 | else | |
444 | p = decode_address_to_semicolon (&cursig, p); | |
445 | } | |
446 | else | |
447 | pass_signals[i] = 0; | |
448 | } | |
449 | strcpy (own_buf, "OK"); | |
450 | return; | |
451 | } | |
452 | ||
a6f3e723 SL |
453 | if (strcmp (own_buf, "QStartNoAckMode") == 0) |
454 | { | |
455 | if (remote_debug) | |
456 | { | |
457 | fprintf (stderr, "[noack mode enabled]\n"); | |
458 | fflush (stderr); | |
459 | } | |
460 | ||
461 | noack_mode = 1; | |
462 | write_ok (own_buf); | |
463 | return; | |
464 | } | |
465 | ||
bd99dc85 PA |
466 | if (strncmp (own_buf, "QNonStop:", 9) == 0) |
467 | { | |
468 | char *mode = own_buf + 9; | |
469 | int req = -1; | |
470 | char *req_str; | |
471 | ||
472 | if (strcmp (mode, "0") == 0) | |
473 | req = 0; | |
474 | else if (strcmp (mode, "1") == 0) | |
475 | req = 1; | |
476 | else | |
477 | { | |
478 | /* We don't know what this mode is, so complain to | |
479 | GDB. */ | |
480 | fprintf (stderr, "Unknown non-stop mode requested: %s\n", | |
481 | own_buf); | |
482 | write_enn (own_buf); | |
483 | return; | |
484 | } | |
485 | ||
486 | req_str = req ? "non-stop" : "all-stop"; | |
487 | if (start_non_stop (req) != 0) | |
488 | { | |
489 | fprintf (stderr, "Setting %s mode failed\n", req_str); | |
490 | write_enn (own_buf); | |
491 | return; | |
492 | } | |
493 | ||
494 | non_stop = req; | |
495 | ||
496 | if (remote_debug) | |
497 | fprintf (stderr, "[%s mode enabled]\n", req_str); | |
498 | ||
499 | write_ok (own_buf); | |
500 | return; | |
501 | } | |
502 | ||
03583c20 UW |
503 | if (strncmp ("QDisableRandomization:", own_buf, |
504 | strlen ("QDisableRandomization:")) == 0) | |
505 | { | |
506 | char *packet = own_buf + strlen ("QDisableRandomization:"); | |
507 | ULONGEST setting; | |
508 | ||
509 | unpack_varlen_hex (packet, &setting); | |
510 | disable_randomization = setting; | |
511 | ||
512 | if (remote_debug) | |
513 | { | |
514 | if (disable_randomization) | |
515 | fprintf (stderr, "[address space randomization disabled]\n"); | |
516 | else | |
517 | fprintf (stderr, "[address space randomization enabled]\n"); | |
518 | } | |
519 | ||
520 | write_ok (own_buf); | |
521 | return; | |
522 | } | |
523 | ||
219f2f23 PA |
524 | if (target_supports_tracepoints () |
525 | && handle_tracepoint_general_set (own_buf)) | |
526 | return; | |
527 | ||
89be2091 DJ |
528 | /* Otherwise we didn't know what packet it was. Say we didn't |
529 | understand it. */ | |
530 | own_buf[0] = 0; | |
531 | } | |
532 | ||
23181151 | 533 | static const char * |
fb1e4ffc | 534 | get_features_xml (const char *annex) |
23181151 | 535 | { |
9b4b61c8 UW |
536 | /* gdbserver_xmltarget defines what to return when looking |
537 | for the "target.xml" file. Its contents can either be | |
538 | verbatim XML code (prefixed with a '@') or else the name | |
539 | of the actual XML file to be used in place of "target.xml". | |
fb1e4ffc | 540 | |
9b4b61c8 UW |
541 | This variable is set up from the auto-generated |
542 | init_registers_... routine for the current target. */ | |
fb1e4ffc | 543 | |
9b4b61c8 | 544 | if (gdbserver_xmltarget |
221c031f | 545 | && strcmp (annex, "target.xml") == 0) |
23181151 | 546 | { |
9b4b61c8 UW |
547 | if (*gdbserver_xmltarget == '@') |
548 | return gdbserver_xmltarget + 1; | |
23181151 | 549 | else |
9b4b61c8 | 550 | annex = gdbserver_xmltarget; |
23181151 DJ |
551 | } |
552 | ||
9b4b61c8 UW |
553 | #ifdef USE_XML |
554 | { | |
555 | extern const char *const xml_builtin[][2]; | |
556 | int i; | |
557 | ||
558 | /* Look for the annex. */ | |
559 | for (i = 0; xml_builtin[i][0] != NULL; i++) | |
560 | if (strcmp (annex, xml_builtin[i][0]) == 0) | |
561 | break; | |
562 | ||
563 | if (xml_builtin[i][0] != NULL) | |
564 | return xml_builtin[i][1]; | |
565 | } | |
566 | #endif | |
567 | ||
568 | return NULL; | |
23181151 DJ |
569 | } |
570 | ||
c74d0ad8 DJ |
571 | void |
572 | monitor_show_help (void) | |
573 | { | |
574 | monitor_output ("The following monitor commands are supported:\n"); | |
575 | monitor_output (" set debug <0|1>\n"); | |
1b3f6016 | 576 | monitor_output (" Enable general debugging messages\n"); |
aa5ca48f DE |
577 | monitor_output (" set debug-hw-points <0|1>\n"); |
578 | monitor_output (" Enable h/w breakpoint/watchpoint debugging messages\n"); | |
c74d0ad8 DJ |
579 | monitor_output (" set remote-debug <0|1>\n"); |
580 | monitor_output (" Enable remote protocol debugging messages\n"); | |
ecd7ecbc DJ |
581 | monitor_output (" exit\n"); |
582 | monitor_output (" Quit GDBserver\n"); | |
c74d0ad8 DJ |
583 | } |
584 | ||
764880b7 PA |
585 | /* Read trace frame or inferior memory. Returns the number of bytes |
586 | actually read, zero when no further transfer is possible, and -1 on | |
587 | error. Return of a positive value smaller than LEN does not | |
588 | indicate there's no more to be read, only the end of the transfer. | |
589 | E.g., when GDB reads memory from a traceframe, a first request may | |
590 | be served from a memory block that does not cover the whole request | |
591 | length. A following request gets the rest served from either | |
592 | another block (of the same traceframe) or from the read-only | |
593 | regions. */ | |
219f2f23 PA |
594 | |
595 | static int | |
90d74c30 | 596 | gdb_read_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) |
219f2f23 | 597 | { |
764880b7 | 598 | int res; |
90d74c30 | 599 | |
219f2f23 PA |
600 | if (current_traceframe >= 0) |
601 | { | |
602 | ULONGEST nbytes; | |
603 | ULONGEST length = len; | |
604 | ||
605 | if (traceframe_read_mem (current_traceframe, | |
606 | memaddr, myaddr, len, &nbytes)) | |
607 | return EIO; | |
608 | /* Data read from trace buffer, we're done. */ | |
764880b7 PA |
609 | if (nbytes > 0) |
610 | return nbytes; | |
219f2f23 | 611 | if (!in_readonly_region (memaddr, length)) |
764880b7 | 612 | return -1; |
219f2f23 PA |
613 | /* Otherwise we have a valid readonly case, fall through. */ |
614 | /* (assume no half-trace half-real blocks for now) */ | |
615 | } | |
616 | ||
764880b7 PA |
617 | res = prepare_to_access_memory (); |
618 | if (res == 0) | |
90d74c30 | 619 | { |
764880b7 | 620 | res = read_inferior_memory (memaddr, myaddr, len); |
0146f85b | 621 | done_accessing_memory (); |
90d74c30 | 622 | |
764880b7 PA |
623 | return res == 0 ? len : -1; |
624 | } | |
625 | else | |
626 | return -1; | |
219f2f23 PA |
627 | } |
628 | ||
629 | /* Write trace frame or inferior memory. Actually, writing to trace | |
630 | frames is forbidden. */ | |
631 | ||
632 | static int | |
90d74c30 | 633 | gdb_write_memory (CORE_ADDR memaddr, const unsigned char *myaddr, int len) |
219f2f23 PA |
634 | { |
635 | if (current_traceframe >= 0) | |
636 | return EIO; | |
637 | else | |
90d74c30 PA |
638 | { |
639 | int ret; | |
640 | ||
641 | ret = prepare_to_access_memory (); | |
642 | if (ret == 0) | |
643 | { | |
644 | ret = write_inferior_memory (memaddr, myaddr, len); | |
0146f85b | 645 | done_accessing_memory (); |
90d74c30 PA |
646 | } |
647 | return ret; | |
648 | } | |
219f2f23 PA |
649 | } |
650 | ||
08388c79 DE |
651 | /* Subroutine of handle_search_memory to simplify it. */ |
652 | ||
653 | static int | |
654 | handle_search_memory_1 (CORE_ADDR start_addr, CORE_ADDR search_space_len, | |
655 | gdb_byte *pattern, unsigned pattern_len, | |
656 | gdb_byte *search_buf, | |
657 | unsigned chunk_size, unsigned search_buf_size, | |
658 | CORE_ADDR *found_addrp) | |
659 | { | |
660 | /* Prime the search buffer. */ | |
661 | ||
764880b7 PA |
662 | if (gdb_read_memory (start_addr, search_buf, search_buf_size) |
663 | != search_buf_size) | |
08388c79 | 664 | { |
5e1471f5 | 665 | warning ("Unable to access target memory at 0x%lx, halting search.", |
08388c79 DE |
666 | (long) start_addr); |
667 | return -1; | |
668 | } | |
669 | ||
670 | /* Perform the search. | |
671 | ||
672 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
673 | When we've scanned N bytes we copy the trailing bytes to the start and | |
674 | read in another N bytes. */ | |
675 | ||
676 | while (search_space_len >= pattern_len) | |
677 | { | |
678 | gdb_byte *found_ptr; | |
679 | unsigned nr_search_bytes = (search_space_len < search_buf_size | |
680 | ? search_space_len | |
681 | : search_buf_size); | |
682 | ||
683 | found_ptr = memmem (search_buf, nr_search_bytes, pattern, pattern_len); | |
684 | ||
685 | if (found_ptr != NULL) | |
686 | { | |
687 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
688 | *found_addrp = found_addr; | |
689 | return 1; | |
690 | } | |
691 | ||
692 | /* Not found in this chunk, skip to next chunk. */ | |
693 | ||
694 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
695 | if (search_space_len >= chunk_size) | |
696 | search_space_len -= chunk_size; | |
697 | else | |
698 | search_space_len = 0; | |
699 | ||
700 | if (search_space_len >= pattern_len) | |
701 | { | |
702 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 703 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
704 | int nr_to_read; |
705 | ||
706 | /* Copy the trailing part of the previous iteration to the front | |
707 | of the buffer for the next iteration. */ | |
708 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
709 | ||
710 | nr_to_read = (search_space_len - keep_len < chunk_size | |
711 | ? search_space_len - keep_len | |
712 | : chunk_size); | |
713 | ||
90d74c30 | 714 | if (gdb_read_memory (read_addr, search_buf + keep_len, |
764880b7 | 715 | nr_to_read) != search_buf_size) |
08388c79 | 716 | { |
493e2a69 MS |
717 | warning ("Unable to access target memory " |
718 | "at 0x%lx, halting search.", | |
08388c79 DE |
719 | (long) read_addr); |
720 | return -1; | |
721 | } | |
722 | ||
723 | start_addr += chunk_size; | |
724 | } | |
725 | } | |
726 | ||
727 | /* Not found. */ | |
728 | ||
729 | return 0; | |
730 | } | |
731 | ||
732 | /* Handle qSearch:memory packets. */ | |
733 | ||
734 | static void | |
735 | handle_search_memory (char *own_buf, int packet_len) | |
736 | { | |
737 | CORE_ADDR start_addr; | |
738 | CORE_ADDR search_space_len; | |
739 | gdb_byte *pattern; | |
740 | unsigned int pattern_len; | |
741 | /* NOTE: also defined in find.c testcase. */ | |
742 | #define SEARCH_CHUNK_SIZE 16000 | |
743 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
744 | /* Buffer to hold memory contents for searching. */ | |
745 | gdb_byte *search_buf; | |
746 | unsigned search_buf_size; | |
747 | int found; | |
748 | CORE_ADDR found_addr; | |
749 | int cmd_name_len = sizeof ("qSearch:memory:") - 1; | |
750 | ||
aef93bd7 | 751 | pattern = malloc (packet_len); |
08388c79 DE |
752 | if (pattern == NULL) |
753 | { | |
5e1471f5 | 754 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
755 | strcpy (own_buf, "E00"); |
756 | return; | |
757 | } | |
758 | if (decode_search_memory_packet (own_buf + cmd_name_len, | |
759 | packet_len - cmd_name_len, | |
760 | &start_addr, &search_space_len, | |
761 | pattern, &pattern_len) < 0) | |
762 | { | |
763 | free (pattern); | |
5e1471f5 | 764 | error ("Error in parsing qSearch:memory packet"); |
08388c79 DE |
765 | strcpy (own_buf, "E00"); |
766 | return; | |
767 | } | |
768 | ||
769 | search_buf_size = chunk_size + pattern_len - 1; | |
770 | ||
771 | /* No point in trying to allocate a buffer larger than the search space. */ | |
772 | if (search_space_len < search_buf_size) | |
773 | search_buf_size = search_space_len; | |
774 | ||
aef93bd7 | 775 | search_buf = malloc (search_buf_size); |
08388c79 DE |
776 | if (search_buf == NULL) |
777 | { | |
778 | free (pattern); | |
5e1471f5 | 779 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
780 | strcpy (own_buf, "E00"); |
781 | return; | |
782 | } | |
783 | ||
784 | found = handle_search_memory_1 (start_addr, search_space_len, | |
785 | pattern, pattern_len, | |
786 | search_buf, chunk_size, search_buf_size, | |
787 | &found_addr); | |
788 | ||
789 | if (found > 0) | |
790 | sprintf (own_buf, "1,%lx", (long) found_addr); | |
791 | else if (found == 0) | |
792 | strcpy (own_buf, "0"); | |
793 | else | |
794 | strcpy (own_buf, "E00"); | |
795 | ||
796 | free (search_buf); | |
797 | free (pattern); | |
798 | } | |
799 | ||
2d717e4f DJ |
800 | #define require_running(BUF) \ |
801 | if (!target_running ()) \ | |
802 | { \ | |
803 | write_enn (BUF); \ | |
804 | return; \ | |
805 | } | |
806 | ||
cdbfd419 PP |
807 | /* Handle monitor commands not handled by target-specific handlers. */ |
808 | ||
809 | static void | |
810 | handle_monitor_command (char *mon) | |
811 | { | |
812 | if (strcmp (mon, "set debug 1") == 0) | |
813 | { | |
814 | debug_threads = 1; | |
815 | monitor_output ("Debug output enabled.\n"); | |
816 | } | |
817 | else if (strcmp (mon, "set debug 0") == 0) | |
818 | { | |
819 | debug_threads = 0; | |
820 | monitor_output ("Debug output disabled.\n"); | |
821 | } | |
822 | else if (strcmp (mon, "set debug-hw-points 1") == 0) | |
823 | { | |
824 | debug_hw_points = 1; | |
825 | monitor_output ("H/W point debugging output enabled.\n"); | |
826 | } | |
827 | else if (strcmp (mon, "set debug-hw-points 0") == 0) | |
828 | { | |
829 | debug_hw_points = 0; | |
830 | monitor_output ("H/W point debugging output disabled.\n"); | |
831 | } | |
832 | else if (strcmp (mon, "set remote-debug 1") == 0) | |
833 | { | |
834 | remote_debug = 1; | |
835 | monitor_output ("Protocol debug output enabled.\n"); | |
836 | } | |
837 | else if (strcmp (mon, "set remote-debug 0") == 0) | |
838 | { | |
839 | remote_debug = 0; | |
840 | monitor_output ("Protocol debug output disabled.\n"); | |
841 | } | |
842 | else if (strcmp (mon, "help") == 0) | |
843 | monitor_show_help (); | |
844 | else if (strcmp (mon, "exit") == 0) | |
845 | exit_requested = 1; | |
846 | else | |
847 | { | |
848 | monitor_output ("Unknown monitor command.\n\n"); | |
849 | monitor_show_help (); | |
850 | write_enn (own_buf); | |
851 | } | |
852 | } | |
853 | ||
d08aafef PA |
854 | /* Associates a callback with each supported qXfer'able object. */ |
855 | ||
856 | struct qxfer | |
857 | { | |
858 | /* The object this handler handles. */ | |
859 | const char *object; | |
860 | ||
861 | /* Request that the target transfer up to LEN 8-bit bytes of the | |
862 | target's OBJECT. The OFFSET, for a seekable object, specifies | |
863 | the starting point. The ANNEX can be used to provide additional | |
864 | data-specific information to the target. | |
865 | ||
866 | Return the number of bytes actually transfered, zero when no | |
867 | further transfer is possible, -1 on error, and -2 when the | |
868 | transfer is not supported. Return of a positive value smaller | |
869 | than LEN does not indicate the end of the object, only the end of | |
870 | the transfer. | |
871 | ||
872 | One, and only one, of readbuf or writebuf must be non-NULL. */ | |
873 | int (*xfer) (const char *annex, | |
874 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
875 | ULONGEST offset, LONGEST len); | |
876 | }; | |
877 | ||
878 | /* Handle qXfer:auxv:read. */ | |
879 | ||
880 | static int | |
881 | handle_qxfer_auxv (const char *annex, | |
882 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
883 | ULONGEST offset, LONGEST len) | |
884 | { | |
885 | if (the_target->read_auxv == NULL || writebuf != NULL) | |
886 | return -2; | |
887 | ||
888 | if (annex[0] != '\0' || !target_running ()) | |
889 | return -1; | |
890 | ||
891 | return (*the_target->read_auxv) (offset, readbuf, len); | |
892 | } | |
893 | ||
894 | /* Handle qXfer:features:read. */ | |
895 | ||
896 | static int | |
897 | handle_qxfer_features (const char *annex, | |
898 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
899 | ULONGEST offset, LONGEST len) | |
900 | { | |
901 | const char *document; | |
902 | size_t total_len; | |
903 | ||
904 | if (writebuf != NULL) | |
905 | return -2; | |
906 | ||
907 | if (!target_running ()) | |
908 | return -1; | |
909 | ||
910 | /* Grab the correct annex. */ | |
911 | document = get_features_xml (annex); | |
912 | if (document == NULL) | |
913 | return -1; | |
914 | ||
915 | total_len = strlen (document); | |
916 | ||
917 | if (offset > total_len) | |
918 | return -1; | |
919 | ||
920 | if (offset + len > total_len) | |
921 | len = total_len - offset; | |
922 | ||
923 | memcpy (readbuf, document + offset, len); | |
924 | return len; | |
925 | } | |
926 | ||
927 | /* Handle qXfer:libraries:read. */ | |
928 | ||
929 | static int | |
930 | handle_qxfer_libraries (const char *annex, | |
931 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
932 | ULONGEST offset, LONGEST len) | |
933 | { | |
934 | unsigned int total_len; | |
935 | char *document, *p; | |
936 | struct inferior_list_entry *dll_ptr; | |
937 | ||
938 | if (writebuf != NULL) | |
939 | return -2; | |
940 | ||
941 | if (annex[0] != '\0' || !target_running ()) | |
942 | return -1; | |
943 | ||
2268b414 JK |
944 | /* Do not confuse this packet with qXfer:libraries-svr4:read. */ |
945 | if (the_target->qxfer_libraries_svr4 != NULL) | |
946 | return 0; | |
947 | ||
d08aafef PA |
948 | /* Over-estimate the necessary memory. Assume that every character |
949 | in the library name must be escaped. */ | |
950 | total_len = 64; | |
951 | for (dll_ptr = all_dlls.head; dll_ptr != NULL; dll_ptr = dll_ptr->next) | |
952 | total_len += 128 + 6 * strlen (((struct dll_info *) dll_ptr)->name); | |
953 | ||
954 | document = malloc (total_len); | |
955 | if (document == NULL) | |
956 | return -1; | |
957 | ||
958 | strcpy (document, "<library-list>\n"); | |
959 | p = document + strlen (document); | |
960 | ||
961 | for (dll_ptr = all_dlls.head; dll_ptr != NULL; dll_ptr = dll_ptr->next) | |
962 | { | |
963 | struct dll_info *dll = (struct dll_info *) dll_ptr; | |
964 | char *name; | |
965 | ||
966 | strcpy (p, " <library name=\""); | |
967 | p = p + strlen (p); | |
968 | name = xml_escape_text (dll->name); | |
969 | strcpy (p, name); | |
970 | free (name); | |
971 | p = p + strlen (p); | |
972 | strcpy (p, "\"><segment address=\""); | |
973 | p = p + strlen (p); | |
974 | sprintf (p, "0x%lx", (long) dll->base_addr); | |
975 | p = p + strlen (p); | |
976 | strcpy (p, "\"/></library>\n"); | |
977 | p = p + strlen (p); | |
978 | } | |
979 | ||
980 | strcpy (p, "</library-list>\n"); | |
981 | ||
982 | total_len = strlen (document); | |
983 | ||
984 | if (offset > total_len) | |
985 | { | |
986 | free (document); | |
987 | return -1; | |
988 | } | |
989 | ||
990 | if (offset + len > total_len) | |
991 | len = total_len - offset; | |
992 | ||
993 | memcpy (readbuf, document + offset, len); | |
994 | free (document); | |
995 | return len; | |
996 | } | |
997 | ||
2268b414 JK |
998 | /* Handle qXfer:libraries-svr4:read. */ |
999 | ||
1000 | static int | |
1001 | handle_qxfer_libraries_svr4 (const char *annex, | |
1002 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1003 | ULONGEST offset, LONGEST len) | |
1004 | { | |
1005 | if (writebuf != NULL) | |
1006 | return -2; | |
1007 | ||
1008 | if (annex[0] != '\0' || !target_running () | |
1009 | || the_target->qxfer_libraries_svr4 == NULL) | |
1010 | return -1; | |
1011 | ||
1012 | return the_target->qxfer_libraries_svr4 (annex, readbuf, writebuf, offset, len); | |
1013 | } | |
1014 | ||
d08aafef PA |
1015 | /* Handle qXfer:osadata:read. */ |
1016 | ||
1017 | static int | |
1018 | handle_qxfer_osdata (const char *annex, | |
1019 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1020 | ULONGEST offset, LONGEST len) | |
1021 | { | |
1022 | if (the_target->qxfer_osdata == NULL || writebuf != NULL) | |
1023 | return -2; | |
1024 | ||
1025 | return (*the_target->qxfer_osdata) (annex, readbuf, NULL, offset, len); | |
1026 | } | |
1027 | ||
1028 | /* Handle qXfer:siginfo:read and qXfer:siginfo:write. */ | |
1029 | ||
1030 | static int | |
1031 | handle_qxfer_siginfo (const char *annex, | |
1032 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1033 | ULONGEST offset, LONGEST len) | |
1034 | { | |
1035 | if (the_target->qxfer_siginfo == NULL) | |
1036 | return -2; | |
1037 | ||
1038 | if (annex[0] != '\0' || !target_running ()) | |
1039 | return -1; | |
1040 | ||
1041 | return (*the_target->qxfer_siginfo) (annex, readbuf, writebuf, offset, len); | |
1042 | } | |
1043 | ||
1044 | /* Handle qXfer:spu:read and qXfer:spu:write. */ | |
1045 | ||
1046 | static int | |
1047 | handle_qxfer_spu (const char *annex, | |
1048 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1049 | ULONGEST offset, LONGEST len) | |
1050 | { | |
1051 | if (the_target->qxfer_spu == NULL) | |
1052 | return -2; | |
1053 | ||
1054 | if (!target_running ()) | |
1055 | return -1; | |
1056 | ||
1057 | return (*the_target->qxfer_spu) (annex, readbuf, writebuf, offset, len); | |
1058 | } | |
1059 | ||
1060 | /* Handle qXfer:statictrace:read. */ | |
1061 | ||
1062 | static int | |
1063 | handle_qxfer_statictrace (const char *annex, | |
1064 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1065 | ULONGEST offset, LONGEST len) | |
1066 | { | |
1067 | ULONGEST nbytes; | |
1068 | ||
1069 | if (writebuf != NULL) | |
1070 | return -2; | |
1071 | ||
1072 | if (annex[0] != '\0' || !target_running () || current_traceframe == -1) | |
1073 | return -1; | |
1074 | ||
1075 | if (traceframe_read_sdata (current_traceframe, offset, | |
1076 | readbuf, len, &nbytes)) | |
1077 | return -1; | |
1078 | return nbytes; | |
1079 | } | |
1080 | ||
1081 | /* Helper for handle_qxfer_threads. */ | |
1082 | ||
dc146f7c | 1083 | static void |
d08aafef | 1084 | handle_qxfer_threads_proper (struct buffer *buffer) |
dc146f7c VP |
1085 | { |
1086 | struct inferior_list_entry *thread; | |
1087 | ||
1088 | buffer_grow_str (buffer, "<threads>\n"); | |
1089 | ||
1090 | for (thread = all_threads.head; thread; thread = thread->next) | |
1091 | { | |
1092 | ptid_t ptid = thread_to_gdb_id ((struct thread_info *)thread); | |
1093 | char ptid_s[100]; | |
1094 | int core = -1; | |
1095 | char core_s[21]; | |
1096 | ||
1097 | write_ptid (ptid_s, ptid); | |
1098 | ||
1099 | if (the_target->core_of_thread) | |
1100 | core = (*the_target->core_of_thread) (ptid); | |
1101 | ||
1102 | if (core != -1) | |
1103 | { | |
1104 | sprintf (core_s, "%d", core); | |
1105 | buffer_xml_printf (buffer, "<thread id=\"%s\" core=\"%s\"/>\n", | |
1106 | ptid_s, core_s); | |
1107 | } | |
1108 | else | |
1109 | { | |
1110 | buffer_xml_printf (buffer, "<thread id=\"%s\"/>\n", | |
1111 | ptid_s); | |
1112 | } | |
1113 | } | |
1114 | ||
1115 | buffer_grow_str0 (buffer, "</threads>\n"); | |
1116 | } | |
1117 | ||
d08aafef PA |
1118 | /* Handle qXfer:threads:read. */ |
1119 | ||
dc146f7c | 1120 | static int |
d08aafef PA |
1121 | handle_qxfer_threads (const char *annex, |
1122 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1123 | ULONGEST offset, LONGEST len) | |
dc146f7c VP |
1124 | { |
1125 | static char *result = 0; | |
1126 | static unsigned int result_length = 0; | |
1127 | ||
d08aafef PA |
1128 | if (writebuf != NULL) |
1129 | return -2; | |
1130 | ||
1131 | if (!target_running () || annex[0] != '\0') | |
1132 | return -1; | |
dc146f7c VP |
1133 | |
1134 | if (offset == 0) | |
1135 | { | |
1136 | struct buffer buffer; | |
1137 | /* When asked for data at offset 0, generate everything and store into | |
1138 | 'result'. Successive reads will be served off 'result'. */ | |
1139 | if (result) | |
1140 | free (result); | |
1141 | ||
1142 | buffer_init (&buffer); | |
1143 | ||
d08aafef | 1144 | handle_qxfer_threads_proper (&buffer); |
dc146f7c VP |
1145 | |
1146 | result = buffer_finish (&buffer); | |
1147 | result_length = strlen (result); | |
1148 | buffer_free (&buffer); | |
1149 | } | |
1150 | ||
1151 | if (offset >= result_length) | |
1152 | { | |
1153 | /* We're out of data. */ | |
1154 | free (result); | |
1155 | result = NULL; | |
1156 | result_length = 0; | |
1157 | return 0; | |
1158 | } | |
1159 | ||
d08aafef PA |
1160 | if (len > result_length - offset) |
1161 | len = result_length - offset; | |
1162 | ||
1163 | memcpy (readbuf, result + offset, len); | |
1164 | ||
1165 | return len; | |
1166 | } | |
1167 | ||
b3b9301e PA |
1168 | /* Handle qXfer:traceframe-info:read. */ |
1169 | ||
1170 | static int | |
1171 | handle_qxfer_traceframe_info (const char *annex, | |
1172 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1173 | ULONGEST offset, LONGEST len) | |
1174 | { | |
1175 | static char *result = 0; | |
1176 | static unsigned int result_length = 0; | |
1177 | ||
1178 | if (writebuf != NULL) | |
1179 | return -2; | |
1180 | ||
1181 | if (!target_running () || annex[0] != '\0' || current_traceframe == -1) | |
1182 | return -1; | |
1183 | ||
1184 | if (offset == 0) | |
1185 | { | |
1186 | struct buffer buffer; | |
1187 | ||
1188 | /* When asked for data at offset 0, generate everything and | |
1189 | store into 'result'. Successive reads will be served off | |
1190 | 'result'. */ | |
1191 | free (result); | |
1192 | ||
1193 | buffer_init (&buffer); | |
1194 | ||
1195 | traceframe_read_info (current_traceframe, &buffer); | |
1196 | ||
1197 | result = buffer_finish (&buffer); | |
1198 | result_length = strlen (result); | |
1199 | buffer_free (&buffer); | |
1200 | } | |
1201 | ||
1202 | if (offset >= result_length) | |
1203 | { | |
1204 | /* We're out of data. */ | |
1205 | free (result); | |
1206 | result = NULL; | |
1207 | result_length = 0; | |
1208 | return 0; | |
1209 | } | |
1210 | ||
1211 | if (len > result_length - offset) | |
1212 | len = result_length - offset; | |
1213 | ||
1214 | memcpy (readbuf, result + offset, len); | |
1215 | return len; | |
1216 | } | |
1217 | ||
78d85199 YQ |
1218 | /* Handle qXfer:fdpic:read. */ |
1219 | ||
1220 | static int | |
1221 | handle_qxfer_fdpic (const char *annex, gdb_byte *readbuf, | |
1222 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1223 | { | |
1224 | if (the_target->read_loadmap == NULL) | |
1225 | return -2; | |
1226 | ||
1227 | if (!target_running ()) | |
1228 | return -1; | |
1229 | ||
1230 | return (*the_target->read_loadmap) (annex, offset, readbuf, len); | |
1231 | } | |
1232 | ||
d08aafef PA |
1233 | static const struct qxfer qxfer_packets[] = |
1234 | { | |
1235 | { "auxv", handle_qxfer_auxv }, | |
78d85199 | 1236 | { "fdpic", handle_qxfer_fdpic}, |
d08aafef PA |
1237 | { "features", handle_qxfer_features }, |
1238 | { "libraries", handle_qxfer_libraries }, | |
2268b414 | 1239 | { "libraries-svr4", handle_qxfer_libraries_svr4 }, |
d08aafef PA |
1240 | { "osdata", handle_qxfer_osdata }, |
1241 | { "siginfo", handle_qxfer_siginfo }, | |
1242 | { "spu", handle_qxfer_spu }, | |
1243 | { "statictrace", handle_qxfer_statictrace }, | |
1244 | { "threads", handle_qxfer_threads }, | |
b3b9301e | 1245 | { "traceframe-info", handle_qxfer_traceframe_info }, |
d08aafef PA |
1246 | }; |
1247 | ||
1248 | static int | |
1249 | handle_qxfer (char *own_buf, int packet_len, int *new_packet_len_p) | |
1250 | { | |
1251 | int i; | |
1252 | char *object; | |
1253 | char *rw; | |
1254 | char *annex; | |
1255 | char *offset; | |
1256 | ||
1257 | if (strncmp (own_buf, "qXfer:", 6) != 0) | |
1258 | return 0; | |
1259 | ||
1260 | /* Grab the object, r/w and annex. */ | |
1261 | if (decode_xfer (own_buf + 6, &object, &rw, &annex, &offset) < 0) | |
1262 | { | |
1263 | write_enn (own_buf); | |
1264 | return 1; | |
1265 | } | |
1266 | ||
1267 | for (i = 0; | |
1268 | i < sizeof (qxfer_packets) / sizeof (qxfer_packets[0]); | |
1269 | i++) | |
1270 | { | |
1271 | const struct qxfer *q = &qxfer_packets[i]; | |
1272 | ||
1273 | if (strcmp (object, q->object) == 0) | |
1274 | { | |
1275 | if (strcmp (rw, "read") == 0) | |
1276 | { | |
1277 | unsigned char *data; | |
1278 | int n; | |
1279 | CORE_ADDR ofs; | |
1280 | unsigned int len; | |
1281 | ||
1282 | /* Grab the offset and length. */ | |
1283 | if (decode_xfer_read (offset, &ofs, &len) < 0) | |
1284 | { | |
1285 | write_enn (own_buf); | |
1286 | return 1; | |
1287 | } | |
1288 | ||
1289 | /* Read one extra byte, as an indicator of whether there is | |
1290 | more. */ | |
1291 | if (len > PBUFSIZ - 2) | |
1292 | len = PBUFSIZ - 2; | |
1293 | data = malloc (len + 1); | |
1294 | if (data == NULL) | |
1295 | { | |
1296 | write_enn (own_buf); | |
1297 | return 1; | |
1298 | } | |
1299 | n = (*q->xfer) (annex, data, NULL, ofs, len + 1); | |
1300 | if (n == -2) | |
1301 | { | |
1302 | free (data); | |
1303 | return 0; | |
1304 | } | |
1305 | else if (n < 0) | |
1306 | write_enn (own_buf); | |
1307 | else if (n > len) | |
1308 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); | |
1309 | else | |
1310 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); | |
1311 | ||
1312 | free (data); | |
1313 | return 1; | |
1314 | } | |
1315 | else if (strcmp (rw, "write") == 0) | |
1316 | { | |
1317 | int n; | |
1318 | unsigned int len; | |
1319 | CORE_ADDR ofs; | |
1320 | unsigned char *data; | |
1321 | ||
1322 | strcpy (own_buf, "E00"); | |
1323 | data = malloc (packet_len - (offset - own_buf)); | |
1324 | if (data == NULL) | |
1325 | { | |
1326 | write_enn (own_buf); | |
1327 | return 1; | |
1328 | } | |
1329 | if (decode_xfer_write (offset, packet_len - (offset - own_buf), | |
1330 | &ofs, &len, data) < 0) | |
1331 | { | |
1332 | free (data); | |
1333 | write_enn (own_buf); | |
1334 | return 1; | |
1335 | } | |
1336 | ||
1337 | n = (*q->xfer) (annex, NULL, data, ofs, len); | |
1338 | if (n == -2) | |
1339 | { | |
1340 | free (data); | |
1341 | return 0; | |
1342 | } | |
1343 | else if (n < 0) | |
1344 | write_enn (own_buf); | |
1345 | else | |
1346 | sprintf (own_buf, "%x", n); | |
dc146f7c | 1347 | |
d08aafef PA |
1348 | free (data); |
1349 | return 1; | |
1350 | } | |
dc146f7c | 1351 | |
d08aafef PA |
1352 | return 0; |
1353 | } | |
1354 | } | |
dc146f7c | 1355 | |
d08aafef | 1356 | return 0; |
dc146f7c VP |
1357 | } |
1358 | ||
30ba68cb MS |
1359 | /* Table used by the crc32 function to calcuate the checksum. */ |
1360 | ||
1361 | static unsigned int crc32_table[256] = | |
1362 | {0, 0}; | |
1363 | ||
1364 | /* Compute 32 bit CRC from inferior memory. | |
1365 | ||
1366 | On success, return 32 bit CRC. | |
1367 | On failure, return (unsigned long long) -1. */ | |
1368 | ||
1369 | static unsigned long long | |
1370 | crc32 (CORE_ADDR base, int len, unsigned int crc) | |
1371 | { | |
1372 | if (!crc32_table[1]) | |
1373 | { | |
1374 | /* Initialize the CRC table and the decoding table. */ | |
1375 | int i, j; | |
1376 | unsigned int c; | |
1377 | ||
1378 | for (i = 0; i < 256; i++) | |
1379 | { | |
1380 | for (c = i << 24, j = 8; j > 0; --j) | |
1381 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
1382 | crc32_table[i] = c; | |
1383 | } | |
1384 | } | |
1385 | ||
1386 | while (len--) | |
1387 | { | |
1388 | unsigned char byte = 0; | |
1389 | ||
1390 | /* Return failure if memory read fails. */ | |
1391 | if (read_inferior_memory (base, &byte, 1) != 0) | |
1392 | return (unsigned long long) -1; | |
1393 | ||
1394 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ byte) & 255]; | |
1395 | base++; | |
1396 | } | |
1397 | return (unsigned long long) crc; | |
1398 | } | |
1399 | ||
ce3a066d | 1400 | /* Handle all of the extended 'q' packets. */ |
d08aafef | 1401 | |
ce3a066d | 1402 | void |
0e7f50da | 1403 | handle_query (char *own_buf, int packet_len, int *new_packet_len_p) |
ce3a066d | 1404 | { |
0d62e5e8 DJ |
1405 | static struct inferior_list_entry *thread_ptr; |
1406 | ||
bb63802a | 1407 | /* Reply the current thread id. */ |
db42f210 | 1408 | if (strcmp ("qC", own_buf) == 0 && !disable_packet_qC) |
bb63802a | 1409 | { |
95954743 | 1410 | ptid_t gdb_id; |
2d717e4f | 1411 | require_running (own_buf); |
bd99dc85 | 1412 | |
95954743 PA |
1413 | if (!ptid_equal (general_thread, null_ptid) |
1414 | && !ptid_equal (general_thread, minus_one_ptid)) | |
bd99dc85 PA |
1415 | gdb_id = general_thread; |
1416 | else | |
1417 | { | |
1418 | thread_ptr = all_threads.head; | |
1419 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
1420 | } | |
1421 | ||
95954743 PA |
1422 | sprintf (own_buf, "QC"); |
1423 | own_buf += 2; | |
4b812f4e | 1424 | write_ptid (own_buf, gdb_id); |
bb63802a UW |
1425 | return; |
1426 | } | |
1427 | ||
ce3a066d DJ |
1428 | if (strcmp ("qSymbol::", own_buf) == 0) |
1429 | { | |
d3bbe7a0 PA |
1430 | /* GDB is suggesting new symbols have been loaded. This may |
1431 | mean a new shared library has been detected as loaded, so | |
1432 | take the opportunity to check if breakpoints we think are | |
1433 | inserted, still are. Note that it isn't guaranteed that | |
1434 | we'll see this when a shared library is loaded, and nor will | |
1435 | we see this for unloads (although breakpoints in unloaded | |
1436 | libraries shouldn't trigger), as GDB may not find symbols for | |
1437 | the library at all. We also re-validate breakpoints when we | |
1438 | see a second GDB breakpoint for the same address, and or when | |
1439 | we access breakpoint shadows. */ | |
1440 | validate_breakpoints (); | |
1441 | ||
fa593d66 PA |
1442 | if (target_supports_tracepoints ()) |
1443 | tracepoint_look_up_symbols (); | |
1444 | ||
2d717e4f | 1445 | if (target_running () && the_target->look_up_symbols != NULL) |
2f2893d9 DJ |
1446 | (*the_target->look_up_symbols) (); |
1447 | ||
ce3a066d DJ |
1448 | strcpy (own_buf, "OK"); |
1449 | return; | |
1450 | } | |
1451 | ||
db42f210 | 1452 | if (!disable_packet_qfThreadInfo) |
0d62e5e8 | 1453 | { |
db42f210 | 1454 | if (strcmp ("qfThreadInfo", own_buf) == 0) |
0d62e5e8 | 1455 | { |
95954743 PA |
1456 | ptid_t gdb_id; |
1457 | ||
db42f210 PA |
1458 | require_running (own_buf); |
1459 | thread_ptr = all_threads.head; | |
95954743 PA |
1460 | |
1461 | *own_buf++ = 'm'; | |
1462 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
1463 | write_ptid (own_buf, gdb_id); | |
0d62e5e8 DJ |
1464 | thread_ptr = thread_ptr->next; |
1465 | return; | |
1466 | } | |
db42f210 PA |
1467 | |
1468 | if (strcmp ("qsThreadInfo", own_buf) == 0) | |
0d62e5e8 | 1469 | { |
95954743 PA |
1470 | ptid_t gdb_id; |
1471 | ||
db42f210 PA |
1472 | require_running (own_buf); |
1473 | if (thread_ptr != NULL) | |
1474 | { | |
95954743 PA |
1475 | *own_buf++ = 'm'; |
1476 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
1477 | write_ptid (own_buf, gdb_id); | |
db42f210 PA |
1478 | thread_ptr = thread_ptr->next; |
1479 | return; | |
1480 | } | |
1481 | else | |
1482 | { | |
1483 | sprintf (own_buf, "l"); | |
1484 | return; | |
1485 | } | |
0d62e5e8 DJ |
1486 | } |
1487 | } | |
aa691b87 | 1488 | |
52fb6437 NS |
1489 | if (the_target->read_offsets != NULL |
1490 | && strcmp ("qOffsets", own_buf) == 0) | |
1491 | { | |
1492 | CORE_ADDR text, data; | |
2d717e4f DJ |
1493 | |
1494 | require_running (own_buf); | |
52fb6437 NS |
1495 | if (the_target->read_offsets (&text, &data)) |
1496 | sprintf (own_buf, "Text=%lX;Data=%lX;Bss=%lX", | |
1497 | (long)text, (long)data, (long)data); | |
1498 | else | |
1499 | write_enn (own_buf); | |
1b3f6016 | 1500 | |
52fb6437 NS |
1501 | return; |
1502 | } | |
1503 | ||
be2a5f71 DJ |
1504 | /* Protocol features query. */ |
1505 | if (strncmp ("qSupported", own_buf, 10) == 0 | |
1506 | && (own_buf[10] == ':' || own_buf[10] == '\0')) | |
1507 | { | |
95954743 | 1508 | char *p = &own_buf[10]; |
fa593d66 | 1509 | int gdb_supports_qRelocInsn = 0; |
95954743 | 1510 | |
1570b33e L |
1511 | /* Start processing qSupported packet. */ |
1512 | target_process_qsupported (NULL); | |
1513 | ||
95954743 PA |
1514 | /* Process each feature being provided by GDB. The first |
1515 | feature will follow a ':', and latter features will follow | |
1516 | ';'. */ | |
1517 | if (*p == ':') | |
d149dd1d PA |
1518 | { |
1519 | char **qsupported = NULL; | |
1520 | int count = 0; | |
1521 | int i; | |
1522 | ||
1523 | /* Two passes, to avoid nested strtok calls in | |
1524 | target_process_qsupported. */ | |
1525 | for (p = strtok (p + 1, ";"); | |
1526 | p != NULL; | |
1527 | p = strtok (NULL, ";")) | |
1528 | { | |
1529 | count++; | |
1530 | qsupported = xrealloc (qsupported, count * sizeof (char *)); | |
1531 | qsupported[count - 1] = xstrdup (p); | |
1532 | } | |
1533 | ||
1534 | for (i = 0; i < count; i++) | |
1535 | { | |
1536 | p = qsupported[i]; | |
1537 | if (strcmp (p, "multiprocess+") == 0) | |
1538 | { | |
1539 | /* GDB supports and wants multi-process support if | |
1540 | possible. */ | |
1541 | if (target_supports_multi_process ()) | |
1542 | multi_process = 1; | |
1543 | } | |
fa593d66 PA |
1544 | else if (strcmp (p, "qRelocInsn+") == 0) |
1545 | { | |
1546 | /* GDB supports relocate instruction requests. */ | |
1547 | gdb_supports_qRelocInsn = 1; | |
1548 | } | |
d149dd1d PA |
1549 | else |
1550 | target_process_qsupported (p); | |
1551 | ||
1552 | free (p); | |
1553 | } | |
1554 | ||
1555 | free (qsupported); | |
1556 | } | |
95954743 | 1557 | |
89be2091 | 1558 | sprintf (own_buf, "PacketSize=%x;QPassSignals+", PBUFSIZ - 1); |
0876f84a | 1559 | |
2268b414 JK |
1560 | if (the_target->qxfer_libraries_svr4 != NULL) |
1561 | strcat (own_buf, ";qXfer:libraries-svr4:read+"); | |
1562 | else | |
1563 | { | |
1564 | /* We do not have any hook to indicate whether the non-SVR4 target | |
1565 | backend supports qXfer:libraries:read, so always report it. */ | |
1566 | strcat (own_buf, ";qXfer:libraries:read+"); | |
1567 | } | |
255e7678 | 1568 | |
0876f84a | 1569 | if (the_target->read_auxv != NULL) |
9f2e1e63 | 1570 | strcat (own_buf, ";qXfer:auxv:read+"); |
2d717e4f | 1571 | |
0e7f50da UW |
1572 | if (the_target->qxfer_spu != NULL) |
1573 | strcat (own_buf, ";qXfer:spu:read+;qXfer:spu:write+"); | |
0876f84a | 1574 | |
4aa995e1 PA |
1575 | if (the_target->qxfer_siginfo != NULL) |
1576 | strcat (own_buf, ";qXfer:siginfo:read+;qXfer:siginfo:write+"); | |
1577 | ||
78d85199 YQ |
1578 | if (the_target->read_loadmap != NULL) |
1579 | strcat (own_buf, ";qXfer:fdpic:read+"); | |
1580 | ||
221c031f UW |
1581 | /* We always report qXfer:features:read, as targets may |
1582 | install XML files on a subsequent call to arch_setup. | |
1583 | If we reported to GDB on startup that we don't support | |
1584 | qXfer:feature:read at all, we will never be re-queried. */ | |
1585 | strcat (own_buf, ";qXfer:features:read+"); | |
23181151 | 1586 | |
a6f3e723 SL |
1587 | if (transport_is_reliable) |
1588 | strcat (own_buf, ";QStartNoAckMode+"); | |
07e059b5 VP |
1589 | |
1590 | if (the_target->qxfer_osdata != NULL) | |
1b3f6016 | 1591 | strcat (own_buf, ";qXfer:osdata:read+"); |
07e059b5 | 1592 | |
cf8fd78b PA |
1593 | if (target_supports_multi_process ()) |
1594 | strcat (own_buf, ";multiprocess+"); | |
95954743 | 1595 | |
bd99dc85 PA |
1596 | if (target_supports_non_stop ()) |
1597 | strcat (own_buf, ";QNonStop+"); | |
1598 | ||
03583c20 UW |
1599 | if (target_supports_disable_randomization ()) |
1600 | strcat (own_buf, ";QDisableRandomization+"); | |
1601 | ||
dc146f7c VP |
1602 | strcat (own_buf, ";qXfer:threads:read+"); |
1603 | ||
219f2f23 PA |
1604 | if (target_supports_tracepoints ()) |
1605 | { | |
1606 | strcat (own_buf, ";ConditionalTracepoints+"); | |
1607 | strcat (own_buf, ";TraceStateVariables+"); | |
1608 | strcat (own_buf, ";TracepointSource+"); | |
8336d594 | 1609 | strcat (own_buf, ";DisconnectedTracing+"); |
fa593d66 PA |
1610 | if (gdb_supports_qRelocInsn && target_supports_fast_tracepoints ()) |
1611 | strcat (own_buf, ";FastTracepoints+"); | |
0fb4aa4b | 1612 | strcat (own_buf, ";StaticTracepoints+"); |
1e4d1764 | 1613 | strcat (own_buf, ";InstallInTrace+"); |
0fb4aa4b | 1614 | strcat (own_buf, ";qXfer:statictrace:read+"); |
b3b9301e | 1615 | strcat (own_buf, ";qXfer:traceframe-info:read+"); |
d248b706 | 1616 | strcat (own_buf, ";EnableDisableTracepoints+"); |
3065dfb6 | 1617 | strcat (own_buf, ";tracenz+"); |
219f2f23 PA |
1618 | } |
1619 | ||
be2a5f71 DJ |
1620 | return; |
1621 | } | |
1622 | ||
dae5f5cf DJ |
1623 | /* Thread-local storage support. */ |
1624 | if (the_target->get_tls_address != NULL | |
1625 | && strncmp ("qGetTLSAddr:", own_buf, 12) == 0) | |
1626 | { | |
1627 | char *p = own_buf + 12; | |
5b1c542e | 1628 | CORE_ADDR parts[2], address = 0; |
dae5f5cf | 1629 | int i, err; |
95954743 | 1630 | ptid_t ptid = null_ptid; |
dae5f5cf | 1631 | |
2d717e4f DJ |
1632 | require_running (own_buf); |
1633 | ||
dae5f5cf DJ |
1634 | for (i = 0; i < 3; i++) |
1635 | { | |
1636 | char *p2; | |
1637 | int len; | |
1638 | ||
1639 | if (p == NULL) | |
1640 | break; | |
1641 | ||
1642 | p2 = strchr (p, ','); | |
1643 | if (p2) | |
1644 | { | |
1645 | len = p2 - p; | |
1646 | p2++; | |
1647 | } | |
1648 | else | |
1649 | { | |
1650 | len = strlen (p); | |
1651 | p2 = NULL; | |
1652 | } | |
1653 | ||
5b1c542e | 1654 | if (i == 0) |
95954743 | 1655 | ptid = read_ptid (p, NULL); |
5b1c542e PA |
1656 | else |
1657 | decode_address (&parts[i - 1], p, len); | |
dae5f5cf DJ |
1658 | p = p2; |
1659 | } | |
1660 | ||
1661 | if (p != NULL || i < 3) | |
1662 | err = 1; | |
1663 | else | |
1664 | { | |
e09875d4 | 1665 | struct thread_info *thread = find_thread_ptid (ptid); |
dae5f5cf DJ |
1666 | |
1667 | if (thread == NULL) | |
1668 | err = 2; | |
1669 | else | |
5b1c542e | 1670 | err = the_target->get_tls_address (thread, parts[0], parts[1], |
dae5f5cf DJ |
1671 | &address); |
1672 | } | |
1673 | ||
1674 | if (err == 0) | |
1675 | { | |
c6f46ca0 | 1676 | strcpy (own_buf, paddress(address)); |
dae5f5cf DJ |
1677 | return; |
1678 | } | |
1679 | else if (err > 0) | |
1680 | { | |
1681 | write_enn (own_buf); | |
1682 | return; | |
1683 | } | |
1684 | ||
1685 | /* Otherwise, pretend we do not understand this packet. */ | |
1686 | } | |
1687 | ||
711e434b PM |
1688 | /* Windows OS Thread Information Block address support. */ |
1689 | if (the_target->get_tib_address != NULL | |
1690 | && strncmp ("qGetTIBAddr:", own_buf, 12) == 0) | |
1691 | { | |
1692 | char *annex; | |
1693 | int n; | |
1694 | CORE_ADDR tlb; | |
1695 | ptid_t ptid = read_ptid (own_buf + 12, &annex); | |
1696 | ||
1697 | n = (*the_target->get_tib_address) (ptid, &tlb); | |
1698 | if (n == 1) | |
1699 | { | |
c6f46ca0 | 1700 | strcpy (own_buf, paddress(tlb)); |
711e434b PM |
1701 | return; |
1702 | } | |
1703 | else if (n == 0) | |
1704 | { | |
1705 | write_enn (own_buf); | |
1706 | return; | |
1707 | } | |
1708 | return; | |
1709 | } | |
1710 | ||
c74d0ad8 DJ |
1711 | /* Handle "monitor" commands. */ |
1712 | if (strncmp ("qRcmd,", own_buf, 6) == 0) | |
1713 | { | |
aef93bd7 | 1714 | char *mon = malloc (PBUFSIZ); |
c74d0ad8 DJ |
1715 | int len = strlen (own_buf + 6); |
1716 | ||
aef93bd7 DE |
1717 | if (mon == NULL) |
1718 | { | |
1719 | write_enn (own_buf); | |
1720 | return; | |
1721 | } | |
1722 | ||
d41b6bb4 | 1723 | if ((len % 2) != 0 || unhexify (mon, own_buf + 6, len / 2) != len / 2) |
c74d0ad8 DJ |
1724 | { |
1725 | write_enn (own_buf); | |
1726 | free (mon); | |
1727 | return; | |
1728 | } | |
1729 | mon[len / 2] = '\0'; | |
1730 | ||
1731 | write_ok (own_buf); | |
1732 | ||
cdbfd419 PP |
1733 | if (the_target->handle_monitor_command == NULL |
1734 | || (*the_target->handle_monitor_command) (mon) == 0) | |
1735 | /* Default processing. */ | |
1736 | handle_monitor_command (mon); | |
c74d0ad8 DJ |
1737 | |
1738 | free (mon); | |
1739 | return; | |
1740 | } | |
1741 | ||
493e2a69 MS |
1742 | if (strncmp ("qSearch:memory:", own_buf, |
1743 | sizeof ("qSearch:memory:") - 1) == 0) | |
08388c79 DE |
1744 | { |
1745 | require_running (own_buf); | |
1746 | handle_search_memory (own_buf, packet_len); | |
1747 | return; | |
1748 | } | |
1749 | ||
95954743 PA |
1750 | if (strcmp (own_buf, "qAttached") == 0 |
1751 | || strncmp (own_buf, "qAttached:", sizeof ("qAttached:") - 1) == 0) | |
0b16c5cf | 1752 | { |
95954743 PA |
1753 | struct process_info *process; |
1754 | ||
1755 | if (own_buf[sizeof ("qAttached") - 1]) | |
1756 | { | |
1757 | int pid = strtoul (own_buf + sizeof ("qAttached:") - 1, NULL, 16); | |
1758 | process = (struct process_info *) | |
1759 | find_inferior_id (&all_processes, pid_to_ptid (pid)); | |
1760 | } | |
1761 | else | |
1762 | { | |
1763 | require_running (own_buf); | |
1764 | process = current_process (); | |
1765 | } | |
1766 | ||
1767 | if (process == NULL) | |
1768 | { | |
1769 | write_enn (own_buf); | |
1770 | return; | |
1771 | } | |
1772 | ||
1773 | strcpy (own_buf, process->attached ? "1" : "0"); | |
0b16c5cf PA |
1774 | return; |
1775 | } | |
1776 | ||
30ba68cb MS |
1777 | if (strncmp ("qCRC:", own_buf, 5) == 0) |
1778 | { | |
1779 | /* CRC check (compare-section). */ | |
1780 | char *comma; | |
1781 | CORE_ADDR base; | |
1782 | int len; | |
1783 | unsigned long long crc; | |
1784 | ||
1785 | require_running (own_buf); | |
2280c721 | 1786 | base = strtoul (own_buf + 5, &comma, 16); |
30ba68cb MS |
1787 | if (*comma++ != ',') |
1788 | { | |
1789 | write_enn (own_buf); | |
1790 | return; | |
1791 | } | |
1792 | len = strtoul (comma, NULL, 16); | |
1793 | crc = crc32 (base, len, 0xffffffff); | |
1794 | /* Check for memory failure. */ | |
1795 | if (crc == (unsigned long long) -1) | |
1796 | { | |
1797 | write_enn (own_buf); | |
1798 | return; | |
1799 | } | |
1800 | sprintf (own_buf, "C%lx", (unsigned long) crc); | |
1801 | return; | |
1802 | } | |
1803 | ||
d08aafef PA |
1804 | if (handle_qxfer (own_buf, packet_len, new_packet_len_p)) |
1805 | return; | |
1806 | ||
219f2f23 PA |
1807 | if (target_supports_tracepoints () && handle_tracepoint_query (own_buf)) |
1808 | return; | |
1809 | ||
ce3a066d DJ |
1810 | /* Otherwise we didn't know what packet it was. Say we didn't |
1811 | understand it. */ | |
1812 | own_buf[0] = 0; | |
1813 | } | |
1814 | ||
ce1a5b52 PA |
1815 | static void gdb_wants_all_threads_stopped (void); |
1816 | ||
64386c31 DJ |
1817 | /* Parse vCont packets. */ |
1818 | void | |
5b1c542e | 1819 | handle_v_cont (char *own_buf) |
64386c31 DJ |
1820 | { |
1821 | char *p, *q; | |
1822 | int n = 0, i = 0; | |
2bd7c093 | 1823 | struct thread_resume *resume_info; |
95954743 | 1824 | struct thread_resume default_action = {{0}}; |
64386c31 DJ |
1825 | |
1826 | /* Count the number of semicolons in the packet. There should be one | |
1827 | for every action. */ | |
1828 | p = &own_buf[5]; | |
1829 | while (p) | |
1830 | { | |
1831 | n++; | |
1832 | p++; | |
1833 | p = strchr (p, ';'); | |
1834 | } | |
2bd7c093 PA |
1835 | |
1836 | resume_info = malloc (n * sizeof (resume_info[0])); | |
aef93bd7 DE |
1837 | if (resume_info == NULL) |
1838 | goto err; | |
64386c31 | 1839 | |
64386c31 | 1840 | p = &own_buf[5]; |
64386c31 DJ |
1841 | while (*p) |
1842 | { | |
1843 | p++; | |
1844 | ||
64386c31 | 1845 | if (p[0] == 's' || p[0] == 'S') |
bd99dc85 | 1846 | resume_info[i].kind = resume_step; |
64386c31 | 1847 | else if (p[0] == 'c' || p[0] == 'C') |
bd99dc85 PA |
1848 | resume_info[i].kind = resume_continue; |
1849 | else if (p[0] == 't') | |
1850 | resume_info[i].kind = resume_stop; | |
64386c31 DJ |
1851 | else |
1852 | goto err; | |
1853 | ||
1854 | if (p[0] == 'S' || p[0] == 'C') | |
1855 | { | |
1856 | int sig; | |
1857 | sig = strtol (p + 1, &q, 16); | |
1858 | if (p == q) | |
1859 | goto err; | |
1860 | p = q; | |
1861 | ||
1862 | if (!target_signal_to_host_p (sig)) | |
1863 | goto err; | |
1864 | resume_info[i].sig = target_signal_to_host (sig); | |
1865 | } | |
1866 | else | |
1867 | { | |
1868 | resume_info[i].sig = 0; | |
1869 | p = p + 1; | |
1870 | } | |
1871 | ||
1872 | if (p[0] == 0) | |
1873 | { | |
95954743 | 1874 | resume_info[i].thread = minus_one_ptid; |
64386c31 DJ |
1875 | default_action = resume_info[i]; |
1876 | ||
1877 | /* Note: we don't increment i here, we'll overwrite this entry | |
1878 | the next time through. */ | |
1879 | } | |
1880 | else if (p[0] == ':') | |
1881 | { | |
95954743 | 1882 | ptid_t ptid = read_ptid (p + 1, &q); |
a06660f7 | 1883 | |
64386c31 DJ |
1884 | if (p == q) |
1885 | goto err; | |
1886 | p = q; | |
1887 | if (p[0] != ';' && p[0] != 0) | |
1888 | goto err; | |
1889 | ||
95954743 | 1890 | resume_info[i].thread = ptid; |
a06660f7 | 1891 | |
64386c31 DJ |
1892 | i++; |
1893 | } | |
1894 | } | |
1895 | ||
2bd7c093 PA |
1896 | if (i < n) |
1897 | resume_info[i] = default_action; | |
64386c31 DJ |
1898 | |
1899 | /* Still used in occasional places in the backend. */ | |
bd99dc85 | 1900 | if (n == 1 |
95954743 | 1901 | && !ptid_equal (resume_info[0].thread, minus_one_ptid) |
bd99dc85 | 1902 | && resume_info[0].kind != resume_stop) |
64386c31 DJ |
1903 | cont_thread = resume_info[0].thread; |
1904 | else | |
95954743 | 1905 | cont_thread = minus_one_ptid; |
dc3f8883 | 1906 | set_desired_inferior (0); |
64386c31 | 1907 | |
bd99dc85 PA |
1908 | if (!non_stop) |
1909 | enable_async_io (); | |
1910 | ||
2bd7c093 | 1911 | (*the_target->resume) (resume_info, n); |
64386c31 DJ |
1912 | |
1913 | free (resume_info); | |
1914 | ||
bd99dc85 PA |
1915 | if (non_stop) |
1916 | write_ok (own_buf); | |
1917 | else | |
1918 | { | |
95954743 | 1919 | last_ptid = mywait (minus_one_ptid, &last_status, 0, 1); |
ce1a5b52 | 1920 | |
d20a8ad9 PA |
1921 | if (last_status.kind != TARGET_WAITKIND_EXITED |
1922 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
1923 | current_inferior->last_status = last_status; | |
1924 | ||
ce1a5b52 PA |
1925 | /* From the client's perspective, all-stop mode always stops all |
1926 | threads implicitly (and the target backend has already done | |
1927 | so by now). Tag all threads as "want-stopped", so we don't | |
1928 | resume them implicitly without the client telling us to. */ | |
1929 | gdb_wants_all_threads_stopped (); | |
bd99dc85 PA |
1930 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
1931 | disable_async_io (); | |
6bd31874 JB |
1932 | |
1933 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
1934 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
1935 | mourn_inferior (find_process_pid (ptid_get_pid (last_ptid))); | |
bd99dc85 | 1936 | } |
64386c31 DJ |
1937 | return; |
1938 | ||
1939 | err: | |
255e7678 | 1940 | write_enn (own_buf); |
64386c31 DJ |
1941 | free (resume_info); |
1942 | return; | |
1943 | } | |
1944 | ||
2d717e4f DJ |
1945 | /* Attach to a new program. Return 1 if successful, 0 if failure. */ |
1946 | int | |
5b1c542e | 1947 | handle_v_attach (char *own_buf) |
2d717e4f DJ |
1948 | { |
1949 | int pid; | |
1950 | ||
1951 | pid = strtol (own_buf + 8, NULL, 16); | |
5b1c542e | 1952 | if (pid != 0 && attach_inferior (pid) == 0) |
2d717e4f | 1953 | { |
aeba519e PA |
1954 | /* Don't report shared library events after attaching, even if |
1955 | some libraries are preloaded. GDB will always poll the | |
1956 | library list. Avoids the "stopped by shared library event" | |
1957 | notice on the GDB side. */ | |
1958 | dlls_changed = 0; | |
bd99dc85 PA |
1959 | |
1960 | if (non_stop) | |
1961 | { | |
1962 | /* In non-stop, we don't send a resume reply. Stop events | |
1963 | will follow up using the normal notification | |
1964 | mechanism. */ | |
1965 | write_ok (own_buf); | |
1966 | } | |
1967 | else | |
1968 | prepare_resume_reply (own_buf, last_ptid, &last_status); | |
1969 | ||
2d717e4f DJ |
1970 | return 1; |
1971 | } | |
1972 | else | |
1973 | { | |
1974 | write_enn (own_buf); | |
1975 | return 0; | |
1976 | } | |
1977 | } | |
1978 | ||
1979 | /* Run a new program. Return 1 if successful, 0 if failure. */ | |
1980 | static int | |
5b1c542e | 1981 | handle_v_run (char *own_buf) |
2d717e4f | 1982 | { |
aef93bd7 | 1983 | char *p, *next_p, **new_argv; |
2d717e4f DJ |
1984 | int i, new_argc; |
1985 | ||
1986 | new_argc = 0; | |
1987 | for (p = own_buf + strlen ("vRun;"); p && *p; p = strchr (p, ';')) | |
1988 | { | |
1989 | p++; | |
1990 | new_argc++; | |
1991 | } | |
1992 | ||
aef93bd7 DE |
1993 | new_argv = calloc (new_argc + 2, sizeof (char *)); |
1994 | if (new_argv == NULL) | |
1995 | { | |
1996 | write_enn (own_buf); | |
1997 | return 0; | |
1998 | } | |
1999 | ||
2d717e4f DJ |
2000 | i = 0; |
2001 | for (p = own_buf + strlen ("vRun;"); *p; p = next_p) | |
2002 | { | |
2003 | next_p = strchr (p, ';'); | |
2004 | if (next_p == NULL) | |
2005 | next_p = p + strlen (p); | |
2006 | ||
2007 | if (i == 0 && p == next_p) | |
2008 | new_argv[i] = NULL; | |
2009 | else | |
2010 | { | |
aef93bd7 | 2011 | /* FIXME: Fail request if out of memory instead of dying. */ |
bca929d3 | 2012 | new_argv[i] = xmalloc (1 + (next_p - p) / 2); |
2d717e4f DJ |
2013 | unhexify (new_argv[i], p, (next_p - p) / 2); |
2014 | new_argv[i][(next_p - p) / 2] = '\0'; | |
2015 | } | |
2016 | ||
2017 | if (*next_p) | |
2018 | next_p++; | |
2019 | i++; | |
2020 | } | |
2021 | new_argv[i] = NULL; | |
2022 | ||
2023 | if (new_argv[0] == NULL) | |
2024 | { | |
f142445f DJ |
2025 | /* GDB didn't specify a program to run. Use the program from the |
2026 | last run with the new argument list. */ | |
9b710a42 | 2027 | |
2d717e4f DJ |
2028 | if (program_argv == NULL) |
2029 | { | |
2030 | write_enn (own_buf); | |
b2c04452 | 2031 | freeargv (new_argv); |
2d717e4f DJ |
2032 | return 0; |
2033 | } | |
2034 | ||
aef93bd7 DE |
2035 | new_argv[0] = strdup (program_argv[0]); |
2036 | if (new_argv[0] == NULL) | |
2037 | { | |
aef93bd7 | 2038 | write_enn (own_buf); |
b2c04452 | 2039 | freeargv (new_argv); |
aef93bd7 | 2040 | return 0; |
1b3f6016 | 2041 | } |
2d717e4f | 2042 | } |
f142445f | 2043 | |
aef93bd7 DE |
2044 | /* Free the old argv and install the new one. */ |
2045 | freeargv (program_argv); | |
f142445f | 2046 | program_argv = new_argv; |
2d717e4f | 2047 | |
5b1c542e PA |
2048 | start_inferior (program_argv); |
2049 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
2d717e4f | 2050 | { |
5b1c542e | 2051 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
bd99dc85 PA |
2052 | |
2053 | /* In non-stop, sending a resume reply doesn't set the general | |
2054 | thread, but GDB assumes a vRun sets it (this is so GDB can | |
2055 | query which is the main thread of the new inferior. */ | |
2056 | if (non_stop) | |
2057 | general_thread = last_ptid; | |
2058 | ||
2d717e4f DJ |
2059 | return 1; |
2060 | } | |
2061 | else | |
2062 | { | |
2063 | write_enn (own_buf); | |
2064 | return 0; | |
2065 | } | |
2066 | } | |
2067 | ||
95954743 PA |
2068 | /* Kill process. Return 1 if successful, 0 if failure. */ |
2069 | int | |
2070 | handle_v_kill (char *own_buf) | |
2071 | { | |
2072 | int pid; | |
2073 | char *p = &own_buf[6]; | |
0f54c268 PM |
2074 | if (multi_process) |
2075 | pid = strtol (p, NULL, 16); | |
2076 | else | |
2077 | pid = signal_pid; | |
95954743 PA |
2078 | if (pid != 0 && kill_inferior (pid) == 0) |
2079 | { | |
2080 | last_status.kind = TARGET_WAITKIND_SIGNALLED; | |
2081 | last_status.value.sig = TARGET_SIGNAL_KILL; | |
2082 | last_ptid = pid_to_ptid (pid); | |
2083 | discard_queued_stop_replies (pid); | |
2084 | write_ok (own_buf); | |
2085 | return 1; | |
2086 | } | |
2087 | else | |
2088 | { | |
2089 | write_enn (own_buf); | |
2090 | return 0; | |
2091 | } | |
2092 | } | |
2093 | ||
bd99dc85 PA |
2094 | /* Handle a 'vStopped' packet. */ |
2095 | static void | |
2096 | handle_v_stopped (char *own_buf) | |
2097 | { | |
2098 | /* If we're waiting for GDB to acknowledge a pending stop reply, | |
2099 | consider that done. */ | |
2100 | if (notif_queue) | |
2101 | { | |
2102 | struct vstop_notif *head; | |
2103 | ||
2104 | if (remote_debug) | |
95954743 PA |
2105 | fprintf (stderr, "vStopped: acking %s\n", |
2106 | target_pid_to_str (notif_queue->ptid)); | |
bd99dc85 PA |
2107 | |
2108 | head = notif_queue; | |
2109 | notif_queue = notif_queue->next; | |
2110 | free (head); | |
2111 | } | |
2112 | ||
2113 | /* Push another stop reply, or if there are no more left, an OK. */ | |
2114 | send_next_stop_reply (own_buf); | |
2115 | } | |
2116 | ||
64386c31 DJ |
2117 | /* Handle all of the extended 'v' packets. */ |
2118 | void | |
5b1c542e | 2119 | handle_v_requests (char *own_buf, int packet_len, int *new_packet_len) |
64386c31 | 2120 | { |
db42f210 | 2121 | if (!disable_packet_vCont) |
64386c31 | 2122 | { |
db42f210 PA |
2123 | if (strncmp (own_buf, "vCont;", 6) == 0) |
2124 | { | |
2125 | require_running (own_buf); | |
5b1c542e | 2126 | handle_v_cont (own_buf); |
db42f210 PA |
2127 | return; |
2128 | } | |
64386c31 | 2129 | |
db42f210 PA |
2130 | if (strncmp (own_buf, "vCont?", 6) == 0) |
2131 | { | |
bd99dc85 | 2132 | strcpy (own_buf, "vCont;c;C;s;S;t"); |
db42f210 PA |
2133 | return; |
2134 | } | |
64386c31 DJ |
2135 | } |
2136 | ||
a6b151f1 DJ |
2137 | if (strncmp (own_buf, "vFile:", 6) == 0 |
2138 | && handle_vFile (own_buf, packet_len, new_packet_len)) | |
2139 | return; | |
2140 | ||
2d717e4f DJ |
2141 | if (strncmp (own_buf, "vAttach;", 8) == 0) |
2142 | { | |
95954743 | 2143 | if (!multi_process && target_running ()) |
2d717e4f | 2144 | { |
fd96d250 PA |
2145 | fprintf (stderr, "Already debugging a process\n"); |
2146 | write_enn (own_buf); | |
2147 | return; | |
2d717e4f | 2148 | } |
5b1c542e | 2149 | handle_v_attach (own_buf); |
2d717e4f DJ |
2150 | return; |
2151 | } | |
2152 | ||
2153 | if (strncmp (own_buf, "vRun;", 5) == 0) | |
2154 | { | |
95954743 | 2155 | if (!multi_process && target_running ()) |
2d717e4f | 2156 | { |
fd96d250 PA |
2157 | fprintf (stderr, "Already debugging a process\n"); |
2158 | write_enn (own_buf); | |
2159 | return; | |
2d717e4f | 2160 | } |
5b1c542e | 2161 | handle_v_run (own_buf); |
2d717e4f DJ |
2162 | return; |
2163 | } | |
2164 | ||
95954743 PA |
2165 | if (strncmp (own_buf, "vKill;", 6) == 0) |
2166 | { | |
2167 | if (!target_running ()) | |
2168 | { | |
2169 | fprintf (stderr, "No process to kill\n"); | |
2170 | write_enn (own_buf); | |
2171 | return; | |
2172 | } | |
2173 | handle_v_kill (own_buf); | |
2174 | return; | |
2175 | } | |
2176 | ||
bd99dc85 PA |
2177 | if (strncmp (own_buf, "vStopped", 8) == 0) |
2178 | { | |
2179 | handle_v_stopped (own_buf); | |
2180 | return; | |
2181 | } | |
2182 | ||
64386c31 DJ |
2183 | /* Otherwise we didn't know what packet it was. Say we didn't |
2184 | understand it. */ | |
2185 | own_buf[0] = 0; | |
2186 | return; | |
2187 | } | |
2188 | ||
bd99dc85 PA |
2189 | /* Resume inferior and wait for another event. In non-stop mode, |
2190 | don't really wait here, but return immediatelly to the event | |
2191 | loop. */ | |
1fd7cdc2 | 2192 | static void |
5b1c542e | 2193 | myresume (char *own_buf, int step, int sig) |
64386c31 DJ |
2194 | { |
2195 | struct thread_resume resume_info[2]; | |
2196 | int n = 0; | |
2bd7c093 | 2197 | int valid_cont_thread; |
a20d5e98 DJ |
2198 | |
2199 | set_desired_inferior (0); | |
64386c31 | 2200 | |
95954743 PA |
2201 | valid_cont_thread = (!ptid_equal (cont_thread, null_ptid) |
2202 | && !ptid_equal (cont_thread, minus_one_ptid)); | |
2bd7c093 PA |
2203 | |
2204 | if (step || sig || valid_cont_thread) | |
64386c31 DJ |
2205 | { |
2206 | resume_info[0].thread | |
2207 | = ((struct inferior_list_entry *) current_inferior)->id; | |
bd99dc85 PA |
2208 | if (step) |
2209 | resume_info[0].kind = resume_step; | |
2210 | else | |
2211 | resume_info[0].kind = resume_continue; | |
64386c31 | 2212 | resume_info[0].sig = sig; |
64386c31 DJ |
2213 | n++; |
2214 | } | |
2bd7c093 PA |
2215 | |
2216 | if (!valid_cont_thread) | |
2217 | { | |
95954743 | 2218 | resume_info[n].thread = minus_one_ptid; |
bd99dc85 | 2219 | resume_info[n].kind = resume_continue; |
2bd7c093 PA |
2220 | resume_info[n].sig = 0; |
2221 | n++; | |
2222 | } | |
64386c31 | 2223 | |
bd99dc85 PA |
2224 | if (!non_stop) |
2225 | enable_async_io (); | |
2226 | ||
2bd7c093 | 2227 | (*the_target->resume) (resume_info, n); |
bd99dc85 PA |
2228 | |
2229 | if (non_stop) | |
2230 | write_ok (own_buf); | |
2231 | else | |
2232 | { | |
95954743 | 2233 | last_ptid = mywait (minus_one_ptid, &last_status, 0, 1); |
d20a8ad9 PA |
2234 | |
2235 | if (last_status.kind != TARGET_WAITKIND_EXITED | |
2236 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
2237 | { | |
2238 | current_inferior->last_resume_kind = resume_stop; | |
2239 | current_inferior->last_status = last_status; | |
2240 | } | |
2241 | ||
bd99dc85 PA |
2242 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
2243 | disable_async_io (); | |
6bd31874 JB |
2244 | |
2245 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
2246 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2247 | mourn_inferior (find_process_pid (ptid_get_pid (last_ptid))); | |
bd99dc85 PA |
2248 | } |
2249 | } | |
2250 | ||
2251 | /* Callback for for_each_inferior. Make a new stop reply for each | |
2252 | stopped thread. */ | |
2253 | ||
95954743 PA |
2254 | static int |
2255 | queue_stop_reply_callback (struct inferior_list_entry *entry, void *arg) | |
bd99dc85 | 2256 | { |
8336d594 | 2257 | struct thread_info *thread = (struct thread_info *) entry; |
bd99dc85 | 2258 | |
8336d594 PA |
2259 | /* For now, assume targets that don't have this callback also don't |
2260 | manage the thread's last_status field. */ | |
2261 | if (the_target->thread_stopped == NULL) | |
95954743 | 2262 | { |
8336d594 PA |
2263 | /* Pass the last stop reply back to GDB, but don't notify |
2264 | yet. */ | |
2265 | queue_stop_reply (entry->id, &thread->last_status); | |
2266 | } | |
2267 | else | |
2268 | { | |
2269 | if (thread_stopped (thread)) | |
2270 | { | |
2271 | if (debug_threads) | |
493e2a69 MS |
2272 | fprintf (stderr, |
2273 | "Reporting thread %s as already stopped with %s\n", | |
8336d594 PA |
2274 | target_pid_to_str (entry->id), |
2275 | target_waitstatus_to_string (&thread->last_status)); | |
2276 | ||
d20a8ad9 PA |
2277 | gdb_assert (thread->last_status.kind != TARGET_WAITKIND_IGNORE); |
2278 | ||
8336d594 PA |
2279 | /* Pass the last stop reply back to GDB, but don't notify |
2280 | yet. */ | |
2281 | queue_stop_reply (entry->id, &thread->last_status); | |
2282 | } | |
95954743 PA |
2283 | } |
2284 | ||
2285 | return 0; | |
64386c31 DJ |
2286 | } |
2287 | ||
ce1a5b52 PA |
2288 | /* Set this inferior threads's state as "want-stopped". We won't |
2289 | resume this thread until the client gives us another action for | |
2290 | it. */ | |
8336d594 PA |
2291 | |
2292 | static void | |
2293 | gdb_wants_thread_stopped (struct inferior_list_entry *entry) | |
2294 | { | |
2295 | struct thread_info *thread = (struct thread_info *) entry; | |
2296 | ||
2297 | thread->last_resume_kind = resume_stop; | |
2298 | ||
2299 | if (thread->last_status.kind == TARGET_WAITKIND_IGNORE) | |
2300 | { | |
ce1a5b52 PA |
2301 | /* Most threads are stopped implicitly (all-stop); tag that with |
2302 | signal 0. */ | |
8336d594 PA |
2303 | thread->last_status.kind = TARGET_WAITKIND_STOPPED; |
2304 | thread->last_status.value.sig = TARGET_SIGNAL_0; | |
2305 | } | |
2306 | } | |
2307 | ||
2308 | /* Set all threads' states as "want-stopped". */ | |
2309 | ||
2310 | static void | |
2311 | gdb_wants_all_threads_stopped (void) | |
2312 | { | |
2313 | for_each_inferior (&all_threads, gdb_wants_thread_stopped); | |
2314 | } | |
2315 | ||
2316 | /* Clear the gdb_detached flag of every process. */ | |
2317 | ||
2318 | static void | |
2319 | gdb_reattached_process (struct inferior_list_entry *entry) | |
2320 | { | |
2321 | struct process_info *process = (struct process_info *) entry; | |
2322 | ||
2323 | process->gdb_detached = 0; | |
2324 | } | |
2325 | ||
5b1c542e PA |
2326 | /* Status handler for the '?' packet. */ |
2327 | ||
2328 | static void | |
2329 | handle_status (char *own_buf) | |
2330 | { | |
8336d594 PA |
2331 | /* GDB is connected, don't forward events to the target anymore. */ |
2332 | for_each_inferior (&all_processes, gdb_reattached_process); | |
bd99dc85 PA |
2333 | |
2334 | /* In non-stop mode, we must send a stop reply for each stopped | |
2335 | thread. In all-stop mode, just send one for the first stopped | |
2336 | thread we find. */ | |
2337 | ||
2338 | if (non_stop) | |
2339 | { | |
8336d594 PA |
2340 | discard_queued_stop_replies (-1); |
2341 | find_inferior (&all_threads, queue_stop_reply_callback, NULL); | |
bd99dc85 PA |
2342 | |
2343 | /* The first is sent immediatly. OK is sent if there is no | |
2344 | stopped thread, which is the same handling of the vStopped | |
2345 | packet (by design). */ | |
2346 | send_next_stop_reply (own_buf); | |
2347 | } | |
5b1c542e | 2348 | else |
bd99dc85 | 2349 | { |
7984d532 | 2350 | pause_all (0); |
fa593d66 | 2351 | stabilize_threads (); |
8336d594 PA |
2352 | gdb_wants_all_threads_stopped (); |
2353 | ||
bd99dc85 | 2354 | if (all_threads.head) |
8336d594 PA |
2355 | { |
2356 | struct target_waitstatus status; | |
2357 | ||
2358 | status.kind = TARGET_WAITKIND_STOPPED; | |
2359 | status.value.sig = TARGET_SIGNAL_TRAP; | |
2360 | prepare_resume_reply (own_buf, | |
2361 | all_threads.head->id, &status); | |
2362 | } | |
bd99dc85 PA |
2363 | else |
2364 | strcpy (own_buf, "W00"); | |
2365 | } | |
5b1c542e PA |
2366 | } |
2367 | ||
dd24457d DJ |
2368 | static void |
2369 | gdbserver_version (void) | |
2370 | { | |
c16158bc | 2371 | printf ("GNU gdbserver %s%s\n" |
67827812 | 2372 | "Copyright (C) 2012 Free Software Foundation, Inc.\n" |
493e2a69 MS |
2373 | "gdbserver is free software, covered by the " |
2374 | "GNU General Public License.\n" | |
dd24457d | 2375 | "This gdbserver was configured as \"%s\"\n", |
c16158bc | 2376 | PKGVERSION, version, host_name); |
dd24457d DJ |
2377 | } |
2378 | ||
0bc68c49 | 2379 | static void |
c16158bc | 2380 | gdbserver_usage (FILE *stream) |
0bc68c49 | 2381 | { |
c16158bc JM |
2382 | fprintf (stream, "Usage:\tgdbserver [OPTIONS] COMM PROG [ARGS ...]\n" |
2383 | "\tgdbserver [OPTIONS] --attach COMM PID\n" | |
2384 | "\tgdbserver [OPTIONS] --multi COMM\n" | |
2385 | "\n" | |
2386 | "COMM may either be a tty device (for serial debugging), or \n" | |
2387 | "HOST:PORT to listen for a TCP connection.\n" | |
2388 | "\n" | |
2389 | "Options:\n" | |
62709adf PA |
2390 | " --debug Enable general debugging output.\n" |
2391 | " --remote-debug Enable remote protocol debugging output.\n" | |
2392 | " --version Display version information and exit.\n" | |
03f2bd59 JK |
2393 | " --wrapper WRAPPER -- Run WRAPPER to start new programs.\n" |
2394 | " --once Exit after the first connection has " | |
2395 | "closed.\n"); | |
c16158bc JM |
2396 | if (REPORT_BUGS_TO[0] && stream == stdout) |
2397 | fprintf (stream, "Report bugs to \"%s\".\n", REPORT_BUGS_TO); | |
0bc68c49 DJ |
2398 | } |
2399 | ||
db42f210 PA |
2400 | static void |
2401 | gdbserver_show_disableable (FILE *stream) | |
2402 | { | |
2403 | fprintf (stream, "Disableable packets:\n" | |
2404 | " vCont \tAll vCont packets\n" | |
2405 | " qC \tQuerying the current thread\n" | |
2406 | " qfThreadInfo\tThread listing\n" | |
493e2a69 MS |
2407 | " Tthread \tPassing the thread specifier in the " |
2408 | "T stop reply packet\n" | |
db42f210 PA |
2409 | " threads \tAll of the above\n"); |
2410 | } | |
2411 | ||
2412 | ||
2d717e4f DJ |
2413 | #undef require_running |
2414 | #define require_running(BUF) \ | |
2415 | if (!target_running ()) \ | |
2416 | { \ | |
2417 | write_enn (BUF); \ | |
2418 | break; \ | |
2419 | } | |
2420 | ||
95954743 PA |
2421 | static int |
2422 | first_thread_of (struct inferior_list_entry *entry, void *args) | |
2423 | { | |
2424 | int pid = * (int *) args; | |
2425 | ||
2426 | if (ptid_get_pid (entry->id) == pid) | |
2427 | return 1; | |
2428 | ||
2429 | return 0; | |
2430 | } | |
2431 | ||
2432 | static void | |
2433 | kill_inferior_callback (struct inferior_list_entry *entry) | |
2434 | { | |
2435 | struct process_info *process = (struct process_info *) entry; | |
2436 | int pid = ptid_get_pid (process->head.id); | |
2437 | ||
2438 | kill_inferior (pid); | |
2439 | discard_queued_stop_replies (pid); | |
2440 | } | |
2441 | ||
9f767825 DE |
2442 | /* Callback for for_each_inferior to detach or kill the inferior, |
2443 | depending on whether we attached to it or not. | |
2444 | We inform the user whether we're detaching or killing the process | |
2445 | as this is only called when gdbserver is about to exit. */ | |
2446 | ||
95954743 PA |
2447 | static void |
2448 | detach_or_kill_inferior_callback (struct inferior_list_entry *entry) | |
2449 | { | |
2450 | struct process_info *process = (struct process_info *) entry; | |
2451 | int pid = ptid_get_pid (process->head.id); | |
2452 | ||
2453 | if (process->attached) | |
2454 | detach_inferior (pid); | |
2455 | else | |
2456 | kill_inferior (pid); | |
2457 | ||
2458 | discard_queued_stop_replies (pid); | |
2459 | } | |
2460 | ||
9f767825 DE |
2461 | /* for_each_inferior callback for detach_or_kill_for_exit to print |
2462 | the pids of started inferiors. */ | |
2463 | ||
2464 | static void | |
2465 | print_started_pid (struct inferior_list_entry *entry) | |
2466 | { | |
2467 | struct process_info *process = (struct process_info *) entry; | |
2468 | ||
2469 | if (! process->attached) | |
2470 | { | |
2471 | int pid = ptid_get_pid (process->head.id); | |
2472 | fprintf (stderr, " %d", pid); | |
2473 | } | |
2474 | } | |
2475 | ||
2476 | /* for_each_inferior callback for detach_or_kill_for_exit to print | |
2477 | the pids of attached inferiors. */ | |
2478 | ||
2479 | static void | |
2480 | print_attached_pid (struct inferior_list_entry *entry) | |
2481 | { | |
2482 | struct process_info *process = (struct process_info *) entry; | |
2483 | ||
2484 | if (process->attached) | |
2485 | { | |
2486 | int pid = ptid_get_pid (process->head.id); | |
2487 | fprintf (stderr, " %d", pid); | |
2488 | } | |
2489 | } | |
2490 | ||
2491 | /* Call this when exiting gdbserver with possible inferiors that need | |
2492 | to be killed or detached from. */ | |
2493 | ||
2494 | static void | |
2495 | detach_or_kill_for_exit (void) | |
2496 | { | |
2497 | /* First print a list of the inferiors we will be killing/detaching. | |
2498 | This is to assist the user, for example, in case the inferior unexpectedly | |
2499 | dies after we exit: did we screw up or did the inferior exit on its own? | |
2500 | Having this info will save some head-scratching. */ | |
2501 | ||
2502 | if (have_started_inferiors_p ()) | |
2503 | { | |
2504 | fprintf (stderr, "Killing process(es):"); | |
2505 | for_each_inferior (&all_processes, print_started_pid); | |
2506 | fprintf (stderr, "\n"); | |
2507 | } | |
2508 | if (have_attached_inferiors_p ()) | |
2509 | { | |
2510 | fprintf (stderr, "Detaching process(es):"); | |
2511 | for_each_inferior (&all_processes, print_attached_pid); | |
2512 | fprintf (stderr, "\n"); | |
2513 | } | |
2514 | ||
2515 | /* Now we can kill or detach the inferiors. */ | |
2516 | ||
2517 | for_each_inferior (&all_processes, detach_or_kill_inferior_callback); | |
2518 | } | |
2519 | ||
c906108c | 2520 | int |
da85418c | 2521 | main (int argc, char *argv[]) |
c906108c | 2522 | { |
0729219d DJ |
2523 | int bad_attach; |
2524 | int pid; | |
2d717e4f DJ |
2525 | char *arg_end, *port; |
2526 | char **next_arg = &argv[1]; | |
2527 | int multi_mode = 0; | |
2528 | int attach = 0; | |
2529 | int was_running; | |
c906108c | 2530 | |
2d717e4f | 2531 | while (*next_arg != NULL && **next_arg == '-') |
dd24457d | 2532 | { |
2d717e4f DJ |
2533 | if (strcmp (*next_arg, "--version") == 0) |
2534 | { | |
2535 | gdbserver_version (); | |
2536 | exit (0); | |
2537 | } | |
2538 | else if (strcmp (*next_arg, "--help") == 0) | |
2539 | { | |
c16158bc | 2540 | gdbserver_usage (stdout); |
2d717e4f DJ |
2541 | exit (0); |
2542 | } | |
2543 | else if (strcmp (*next_arg, "--attach") == 0) | |
2544 | attach = 1; | |
2545 | else if (strcmp (*next_arg, "--multi") == 0) | |
2546 | multi_mode = 1; | |
ccd213ac DJ |
2547 | else if (strcmp (*next_arg, "--wrapper") == 0) |
2548 | { | |
2549 | next_arg++; | |
2550 | ||
2551 | wrapper_argv = next_arg; | |
2552 | while (*next_arg != NULL && strcmp (*next_arg, "--") != 0) | |
2553 | next_arg++; | |
2554 | ||
2555 | if (next_arg == wrapper_argv || *next_arg == NULL) | |
2556 | { | |
c16158bc | 2557 | gdbserver_usage (stderr); |
ccd213ac DJ |
2558 | exit (1); |
2559 | } | |
2560 | ||
2561 | /* Consume the "--". */ | |
2562 | *next_arg = NULL; | |
2563 | } | |
2d717e4f DJ |
2564 | else if (strcmp (*next_arg, "--debug") == 0) |
2565 | debug_threads = 1; | |
62709adf PA |
2566 | else if (strcmp (*next_arg, "--remote-debug") == 0) |
2567 | remote_debug = 1; | |
db42f210 PA |
2568 | else if (strcmp (*next_arg, "--disable-packet") == 0) |
2569 | { | |
2570 | gdbserver_show_disableable (stdout); | |
2571 | exit (0); | |
2572 | } | |
2573 | else if (strncmp (*next_arg, | |
2574 | "--disable-packet=", | |
2575 | sizeof ("--disable-packet=") - 1) == 0) | |
2576 | { | |
2577 | char *packets, *tok; | |
2578 | ||
2579 | packets = *next_arg += sizeof ("--disable-packet=") - 1; | |
2580 | for (tok = strtok (packets, ","); | |
2581 | tok != NULL; | |
2582 | tok = strtok (NULL, ",")) | |
2583 | { | |
2584 | if (strcmp ("vCont", tok) == 0) | |
2585 | disable_packet_vCont = 1; | |
2586 | else if (strcmp ("Tthread", tok) == 0) | |
2587 | disable_packet_Tthread = 1; | |
2588 | else if (strcmp ("qC", tok) == 0) | |
2589 | disable_packet_qC = 1; | |
2590 | else if (strcmp ("qfThreadInfo", tok) == 0) | |
2591 | disable_packet_qfThreadInfo = 1; | |
2592 | else if (strcmp ("threads", tok) == 0) | |
2593 | { | |
2594 | disable_packet_vCont = 1; | |
2595 | disable_packet_Tthread = 1; | |
2596 | disable_packet_qC = 1; | |
2597 | disable_packet_qfThreadInfo = 1; | |
2598 | } | |
2599 | else | |
2600 | { | |
2601 | fprintf (stderr, "Don't know how to disable \"%s\".\n\n", | |
2602 | tok); | |
2603 | gdbserver_show_disableable (stderr); | |
2604 | exit (1); | |
2605 | } | |
2606 | } | |
2607 | } | |
e0f9f062 DE |
2608 | else if (strcmp (*next_arg, "-") == 0) |
2609 | { | |
2610 | /* "-" specifies a stdio connection and is a form of port | |
2611 | specification. */ | |
2612 | *next_arg = STDIO_CONNECTION_NAME; | |
2613 | break; | |
2614 | } | |
03583c20 UW |
2615 | else if (strcmp (*next_arg, "--disable-randomization") == 0) |
2616 | disable_randomization = 1; | |
2617 | else if (strcmp (*next_arg, "--no-disable-randomization") == 0) | |
2618 | disable_randomization = 0; | |
03f2bd59 JK |
2619 | else if (strcmp (*next_arg, "--once") == 0) |
2620 | run_once = 1; | |
2d717e4f DJ |
2621 | else |
2622 | { | |
2623 | fprintf (stderr, "Unknown argument: %s\n", *next_arg); | |
2624 | exit (1); | |
2625 | } | |
dd24457d | 2626 | |
2d717e4f DJ |
2627 | next_arg++; |
2628 | continue; | |
dd24457d DJ |
2629 | } |
2630 | ||
c5aa993b | 2631 | if (setjmp (toplevel)) |
c906108c | 2632 | { |
c5aa993b JM |
2633 | fprintf (stderr, "Exiting\n"); |
2634 | exit (1); | |
c906108c SS |
2635 | } |
2636 | ||
2d717e4f DJ |
2637 | port = *next_arg; |
2638 | next_arg++; | |
2639 | if (port == NULL || (!attach && !multi_mode && *next_arg == NULL)) | |
2640 | { | |
c16158bc | 2641 | gdbserver_usage (stderr); |
2d717e4f DJ |
2642 | exit (1); |
2643 | } | |
2644 | ||
e0f9f062 DE |
2645 | /* We need to know whether the remote connection is stdio before |
2646 | starting the inferior. Inferiors created in this scenario have | |
2647 | stdin,stdout redirected. So do this here before we call | |
2648 | start_inferior. */ | |
2649 | remote_prepare (port); | |
2650 | ||
0729219d DJ |
2651 | bad_attach = 0; |
2652 | pid = 0; | |
2d717e4f DJ |
2653 | |
2654 | /* --attach used to come after PORT, so allow it there for | |
2655 | compatibility. */ | |
2656 | if (*next_arg != NULL && strcmp (*next_arg, "--attach") == 0) | |
45b7b345 | 2657 | { |
2d717e4f DJ |
2658 | attach = 1; |
2659 | next_arg++; | |
45b7b345 DJ |
2660 | } |
2661 | ||
2d717e4f DJ |
2662 | if (attach |
2663 | && (*next_arg == NULL | |
2664 | || (*next_arg)[0] == '\0' | |
2665 | || (pid = strtoul (*next_arg, &arg_end, 0)) == 0 | |
2666 | || *arg_end != '\0' | |
2667 | || next_arg[1] != NULL)) | |
2668 | bad_attach = 1; | |
2669 | ||
2670 | if (bad_attach) | |
dd24457d | 2671 | { |
c16158bc | 2672 | gdbserver_usage (stderr); |
dd24457d DJ |
2673 | exit (1); |
2674 | } | |
c906108c | 2675 | |
a20d5e98 | 2676 | initialize_async_io (); |
4ce44c66 | 2677 | initialize_low (); |
219f2f23 PA |
2678 | if (target_supports_tracepoints ()) |
2679 | initialize_tracepoint (); | |
4ce44c66 | 2680 | |
bca929d3 DE |
2681 | own_buf = xmalloc (PBUFSIZ + 1); |
2682 | mem_buf = xmalloc (PBUFSIZ); | |
0a30fbc4 | 2683 | |
2d717e4f | 2684 | if (pid == 0 && *next_arg != NULL) |
45b7b345 | 2685 | { |
2d717e4f DJ |
2686 | int i, n; |
2687 | ||
2688 | n = argc - (next_arg - argv); | |
bca929d3 | 2689 | program_argv = xmalloc (sizeof (char *) * (n + 1)); |
2d717e4f | 2690 | for (i = 0; i < n; i++) |
bca929d3 | 2691 | program_argv[i] = xstrdup (next_arg[i]); |
2d717e4f DJ |
2692 | program_argv[i] = NULL; |
2693 | ||
45b7b345 | 2694 | /* Wait till we are at first instruction in program. */ |
5b1c542e | 2695 | start_inferior (program_argv); |
c906108c | 2696 | |
c588c53c MS |
2697 | /* We are now (hopefully) stopped at the first instruction of |
2698 | the target process. This assumes that the target process was | |
2699 | successfully created. */ | |
45b7b345 | 2700 | } |
2d717e4f DJ |
2701 | else if (pid != 0) |
2702 | { | |
5b1c542e | 2703 | if (attach_inferior (pid) == -1) |
2d717e4f DJ |
2704 | error ("Attaching not supported on this target"); |
2705 | ||
2706 | /* Otherwise succeeded. */ | |
2707 | } | |
45b7b345 DJ |
2708 | else |
2709 | { | |
5b1c542e PA |
2710 | last_status.kind = TARGET_WAITKIND_EXITED; |
2711 | last_status.value.integer = 0; | |
95954743 | 2712 | last_ptid = minus_one_ptid; |
45b7b345 | 2713 | } |
c906108c | 2714 | |
311de423 PA |
2715 | /* Don't report shared library events on the initial connection, |
2716 | even if some libraries are preloaded. Avoids the "stopped by | |
2717 | shared library event" notice on gdb side. */ | |
2718 | dlls_changed = 0; | |
2719 | ||
8264bb58 DJ |
2720 | if (setjmp (toplevel)) |
2721 | { | |
9f767825 | 2722 | detach_or_kill_for_exit (); |
8264bb58 DJ |
2723 | exit (1); |
2724 | } | |
2725 | ||
5b1c542e PA |
2726 | if (last_status.kind == TARGET_WAITKIND_EXITED |
2727 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2d717e4f DJ |
2728 | was_running = 0; |
2729 | else | |
2730 | was_running = 1; | |
2731 | ||
2732 | if (!was_running && !multi_mode) | |
c588c53c | 2733 | { |
2d717e4f | 2734 | fprintf (stderr, "No program to debug. GDBserver exiting.\n"); |
c588c53c MS |
2735 | exit (1); |
2736 | } | |
2737 | ||
c906108c SS |
2738 | while (1) |
2739 | { | |
a6f3e723 | 2740 | noack_mode = 0; |
95954743 | 2741 | multi_process = 0; |
8336d594 PA |
2742 | /* Be sure we're out of tfind mode. */ |
2743 | current_traceframe = -1; | |
bd99dc85 | 2744 | |
2d717e4f | 2745 | remote_open (port); |
c906108c | 2746 | |
2d717e4f DJ |
2747 | if (setjmp (toplevel) != 0) |
2748 | { | |
2749 | /* An error occurred. */ | |
2750 | if (response_needed) | |
2751 | { | |
2752 | write_enn (own_buf); | |
2753 | putpkt (own_buf); | |
2754 | } | |
2755 | } | |
2756 | ||
bd99dc85 | 2757 | /* Wait for events. This will return when all event sources are |
8336d594 | 2758 | removed from the event loop. */ |
bd99dc85 PA |
2759 | start_event_loop (); |
2760 | ||
2761 | /* If an exit was requested (using the "monitor exit" command), | |
2762 | terminate now. The only other way to get here is for | |
2763 | getpkt to fail; close the connection and reopen it at the | |
2764 | top of the loop. */ | |
2765 | ||
03f2bd59 | 2766 | if (exit_requested || run_once) |
c906108c | 2767 | { |
9f767825 | 2768 | detach_or_kill_for_exit (); |
bd99dc85 PA |
2769 | exit (0); |
2770 | } | |
8336d594 PA |
2771 | |
2772 | fprintf (stderr, | |
2773 | "Remote side has terminated connection. " | |
2774 | "GDBserver will reopen the connection.\n"); | |
2775 | ||
2776 | if (tracing) | |
2777 | { | |
2778 | if (disconnected_tracing) | |
2779 | { | |
2780 | /* Try to enable non-stop/async mode, so we we can both | |
2781 | wait for an async socket accept, and handle async | |
2782 | target events simultaneously. There's also no point | |
2783 | either in having the target always stop all threads, | |
2784 | when we're going to pass signals down without | |
2785 | informing GDB. */ | |
2786 | if (!non_stop) | |
2787 | { | |
2788 | if (start_non_stop (1)) | |
2789 | non_stop = 1; | |
2790 | ||
2791 | /* Detaching implicitly resumes all threads; simply | |
2792 | disconnecting does not. */ | |
2793 | } | |
2794 | } | |
2795 | else | |
2796 | { | |
2797 | fprintf (stderr, | |
2798 | "Disconnected tracing disabled; stopping trace run.\n"); | |
2799 | stop_tracing (); | |
2800 | } | |
2801 | } | |
bd99dc85 PA |
2802 | } |
2803 | } | |
01f9e8fa | 2804 | |
bd99dc85 PA |
2805 | /* Event loop callback that handles a serial event. The first byte in |
2806 | the serial buffer gets us here. We expect characters to arrive at | |
2807 | a brisk pace, so we read the rest of the packet with a blocking | |
2808 | getpkt call. */ | |
01f9e8fa | 2809 | |
8336d594 | 2810 | static int |
bd99dc85 PA |
2811 | process_serial_event (void) |
2812 | { | |
2813 | char ch; | |
2814 | int i = 0; | |
2815 | int signal; | |
2816 | unsigned int len; | |
764880b7 | 2817 | int res; |
bd99dc85 | 2818 | CORE_ADDR mem_addr; |
95954743 | 2819 | int pid; |
bd99dc85 PA |
2820 | unsigned char sig; |
2821 | int packet_len; | |
2822 | int new_packet_len = -1; | |
2823 | ||
2824 | /* Used to decide when gdbserver should exit in | |
2825 | multi-mode/remote. */ | |
2826 | static int have_ran = 0; | |
2827 | ||
2828 | if (!have_ran) | |
2829 | have_ran = target_running (); | |
2830 | ||
2831 | disable_async_io (); | |
2832 | ||
2833 | response_needed = 0; | |
2834 | packet_len = getpkt (own_buf); | |
2835 | if (packet_len <= 0) | |
2836 | { | |
bd99dc85 | 2837 | remote_close (); |
8336d594 PA |
2838 | /* Force an event loop break. */ |
2839 | return -1; | |
bd99dc85 PA |
2840 | } |
2841 | response_needed = 1; | |
2842 | ||
2843 | i = 0; | |
2844 | ch = own_buf[i++]; | |
2845 | switch (ch) | |
2846 | { | |
2847 | case 'q': | |
2848 | handle_query (own_buf, packet_len, &new_packet_len); | |
2849 | break; | |
2850 | case 'Q': | |
2851 | handle_general_set (own_buf); | |
2852 | break; | |
2853 | case 'D': | |
2854 | require_running (own_buf); | |
95954743 PA |
2855 | |
2856 | if (multi_process) | |
2857 | { | |
2858 | i++; /* skip ';' */ | |
2859 | pid = strtol (&own_buf[i], NULL, 16); | |
2860 | } | |
2861 | else | |
2862 | pid = | |
2863 | ptid_get_pid (((struct inferior_list_entry *) current_inferior)->id); | |
2864 | ||
8336d594 PA |
2865 | if (tracing && disconnected_tracing) |
2866 | { | |
2867 | struct thread_resume resume_info; | |
2868 | struct process_info *process = find_process_pid (pid); | |
2869 | ||
2870 | if (process == NULL) | |
2871 | { | |
2872 | write_enn (own_buf); | |
2873 | break; | |
2874 | } | |
2875 | ||
2876 | fprintf (stderr, | |
2877 | "Disconnected tracing in effect, " | |
2878 | "leaving gdbserver attached to the process\n"); | |
2879 | ||
2880 | /* Make sure we're in non-stop/async mode, so we we can both | |
2881 | wait for an async socket accept, and handle async target | |
2882 | events simultaneously. There's also no point either in | |
2883 | having the target stop all threads, when we're going to | |
2884 | pass signals down without informing GDB. */ | |
2885 | if (!non_stop) | |
2886 | { | |
2887 | if (debug_threads) | |
2888 | fprintf (stderr, "Forcing non-stop mode\n"); | |
2889 | ||
2890 | non_stop = 1; | |
2891 | start_non_stop (1); | |
2892 | } | |
2893 | ||
2894 | process->gdb_detached = 1; | |
2895 | ||
2896 | /* Detaching implicitly resumes all threads. */ | |
2897 | resume_info.thread = minus_one_ptid; | |
2898 | resume_info.kind = resume_continue; | |
2899 | resume_info.sig = 0; | |
2900 | (*the_target->resume) (&resume_info, 1); | |
2901 | ||
2902 | write_ok (own_buf); | |
2903 | break; /* from switch/case */ | |
2904 | } | |
2905 | ||
95954743 | 2906 | fprintf (stderr, "Detaching from process %d\n", pid); |
8336d594 | 2907 | stop_tracing (); |
95954743 | 2908 | if (detach_inferior (pid) != 0) |
bd99dc85 PA |
2909 | write_enn (own_buf); |
2910 | else | |
2911 | { | |
95954743 | 2912 | discard_queued_stop_replies (pid); |
bd99dc85 PA |
2913 | write_ok (own_buf); |
2914 | ||
2915 | if (extended_protocol) | |
c906108c | 2916 | { |
bd99dc85 PA |
2917 | /* Treat this like a normal program exit. */ |
2918 | last_status.kind = TARGET_WAITKIND_EXITED; | |
2919 | last_status.value.integer = 0; | |
95954743 | 2920 | last_ptid = pid_to_ptid (pid); |
2d717e4f | 2921 | |
bd99dc85 PA |
2922 | current_inferior = NULL; |
2923 | } | |
2924 | else | |
2925 | { | |
2926 | putpkt (own_buf); | |
2927 | remote_close (); | |
2928 | ||
2929 | /* If we are attached, then we can exit. Otherwise, we | |
2930 | need to hang around doing nothing, until the child is | |
2931 | gone. */ | |
71f55dd8 | 2932 | join_inferior (pid); |
bd99dc85 PA |
2933 | exit (0); |
2934 | } | |
2935 | } | |
2936 | break; | |
2937 | case '!': | |
2938 | extended_protocol = 1; | |
2939 | write_ok (own_buf); | |
2940 | break; | |
2941 | case '?': | |
2942 | handle_status (own_buf); | |
2943 | break; | |
2944 | case 'H': | |
2945 | if (own_buf[1] == 'c' || own_buf[1] == 'g' || own_buf[1] == 's') | |
2946 | { | |
95954743 PA |
2947 | ptid_t gdb_id, thread_id; |
2948 | int pid; | |
bd99dc85 PA |
2949 | |
2950 | require_running (own_buf); | |
95954743 PA |
2951 | |
2952 | gdb_id = read_ptid (&own_buf[2], NULL); | |
2953 | ||
2954 | pid = ptid_get_pid (gdb_id); | |
2955 | ||
2956 | if (ptid_equal (gdb_id, null_ptid) | |
2957 | || ptid_equal (gdb_id, minus_one_ptid)) | |
2958 | thread_id = null_ptid; | |
2959 | else if (pid != 0 | |
2960 | && ptid_equal (pid_to_ptid (pid), | |
2961 | gdb_id)) | |
2962 | { | |
2963 | struct thread_info *thread = | |
2964 | (struct thread_info *) find_inferior (&all_threads, | |
2965 | first_thread_of, | |
2966 | &pid); | |
2967 | if (!thread) | |
2968 | { | |
2969 | write_enn (own_buf); | |
2970 | break; | |
2971 | } | |
2972 | ||
2973 | thread_id = ((struct inferior_list_entry *)thread)->id; | |
2974 | } | |
bd99dc85 PA |
2975 | else |
2976 | { | |
2977 | thread_id = gdb_id_to_thread_id (gdb_id); | |
95954743 | 2978 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 2979 | { |
a06660f7 | 2980 | write_enn (own_buf); |
c906108c SS |
2981 | break; |
2982 | } | |
c906108c SS |
2983 | } |
2984 | ||
bd99dc85 | 2985 | if (own_buf[1] == 'g') |
c906108c | 2986 | { |
95954743 | 2987 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 2988 | { |
bd99dc85 PA |
2989 | /* GDB is telling us to choose any thread. Check if |
2990 | the currently selected thread is still valid. If | |
2991 | it is not, select the first available. */ | |
2992 | struct thread_info *thread = | |
2993 | (struct thread_info *) find_inferior_id (&all_threads, | |
2994 | general_thread); | |
2995 | if (thread == NULL) | |
2996 | thread_id = all_threads.head->id; | |
c906108c | 2997 | } |
bd99dc85 PA |
2998 | |
2999 | general_thread = thread_id; | |
3000 | set_desired_inferior (1); | |
c906108c | 3001 | } |
bd99dc85 PA |
3002 | else if (own_buf[1] == 'c') |
3003 | cont_thread = thread_id; | |
c906108c | 3004 | |
bd99dc85 PA |
3005 | write_ok (own_buf); |
3006 | } | |
3007 | else | |
3008 | { | |
3009 | /* Silently ignore it so that gdb can extend the protocol | |
3010 | without compatibility headaches. */ | |
3011 | own_buf[0] = '\0'; | |
2d717e4f | 3012 | } |
bd99dc85 PA |
3013 | break; |
3014 | case 'g': | |
219f2f23 PA |
3015 | require_running (own_buf); |
3016 | if (current_traceframe >= 0) | |
3017 | { | |
3018 | struct regcache *regcache = new_register_cache (); | |
3019 | ||
3020 | if (fetch_traceframe_registers (current_traceframe, | |
3021 | regcache, -1) == 0) | |
3022 | registers_to_string (regcache, own_buf); | |
3023 | else | |
3024 | write_enn (own_buf); | |
3025 | free_register_cache (regcache); | |
3026 | } | |
3027 | else | |
3028 | { | |
3029 | struct regcache *regcache; | |
3030 | ||
3031 | set_desired_inferior (1); | |
3032 | regcache = get_thread_regcache (current_inferior, 1); | |
3033 | registers_to_string (regcache, own_buf); | |
3034 | } | |
bd99dc85 PA |
3035 | break; |
3036 | case 'G': | |
219f2f23 PA |
3037 | require_running (own_buf); |
3038 | if (current_traceframe >= 0) | |
3039 | write_enn (own_buf); | |
3040 | else | |
3041 | { | |
442ea881 PA |
3042 | struct regcache *regcache; |
3043 | ||
442ea881 PA |
3044 | set_desired_inferior (1); |
3045 | regcache = get_thread_regcache (current_inferior, 1); | |
3046 | registers_from_string (regcache, &own_buf[1]); | |
3047 | write_ok (own_buf); | |
3048 | } | |
bd99dc85 PA |
3049 | break; |
3050 | case 'm': | |
3051 | require_running (own_buf); | |
3052 | decode_m_packet (&own_buf[1], &mem_addr, &len); | |
764880b7 PA |
3053 | res = gdb_read_memory (mem_addr, mem_buf, len); |
3054 | if (res < 0) | |
bd99dc85 | 3055 | write_enn (own_buf); |
764880b7 PA |
3056 | else |
3057 | convert_int_to_ascii (mem_buf, own_buf, res); | |
bd99dc85 PA |
3058 | break; |
3059 | case 'M': | |
3060 | require_running (own_buf); | |
fa593d66 | 3061 | decode_M_packet (&own_buf[1], &mem_addr, &len, &mem_buf); |
90d74c30 | 3062 | if (gdb_write_memory (mem_addr, mem_buf, len) == 0) |
bd99dc85 PA |
3063 | write_ok (own_buf); |
3064 | else | |
3065 | write_enn (own_buf); | |
3066 | break; | |
3067 | case 'X': | |
3068 | require_running (own_buf); | |
3069 | if (decode_X_packet (&own_buf[1], packet_len - 1, | |
fa593d66 | 3070 | &mem_addr, &len, &mem_buf) < 0 |
90d74c30 | 3071 | || gdb_write_memory (mem_addr, mem_buf, len) != 0) |
bd99dc85 PA |
3072 | write_enn (own_buf); |
3073 | else | |
3074 | write_ok (own_buf); | |
3075 | break; | |
3076 | case 'C': | |
3077 | require_running (own_buf); | |
3078 | convert_ascii_to_int (own_buf + 1, &sig, 1); | |
3079 | if (target_signal_to_host_p (sig)) | |
3080 | signal = target_signal_to_host (sig); | |
3081 | else | |
3082 | signal = 0; | |
3083 | myresume (own_buf, 0, signal); | |
3084 | break; | |
3085 | case 'S': | |
3086 | require_running (own_buf); | |
3087 | convert_ascii_to_int (own_buf + 1, &sig, 1); | |
3088 | if (target_signal_to_host_p (sig)) | |
3089 | signal = target_signal_to_host (sig); | |
3090 | else | |
3091 | signal = 0; | |
3092 | myresume (own_buf, 1, signal); | |
3093 | break; | |
3094 | case 'c': | |
3095 | require_running (own_buf); | |
3096 | signal = 0; | |
3097 | myresume (own_buf, 0, signal); | |
3098 | break; | |
3099 | case 's': | |
3100 | require_running (own_buf); | |
3101 | signal = 0; | |
3102 | myresume (own_buf, 1, signal); | |
3103 | break; | |
c6314022 AR |
3104 | case 'Z': /* insert_ ... */ |
3105 | /* Fallthrough. */ | |
3106 | case 'z': /* remove_ ... */ | |
bd99dc85 PA |
3107 | { |
3108 | char *lenptr; | |
3109 | char *dataptr; | |
3110 | CORE_ADDR addr = strtoul (&own_buf[3], &lenptr, 16); | |
3111 | int len = strtol (lenptr + 1, &dataptr, 16); | |
3112 | char type = own_buf[1]; | |
c6314022 | 3113 | int res; |
d993e290 | 3114 | const int insert = ch == 'Z'; |
c6314022 | 3115 | |
d993e290 PA |
3116 | /* Default to unrecognized/unsupported. */ |
3117 | res = 1; | |
3118 | switch (type) | |
3119 | { | |
3120 | case '0': /* software-breakpoint */ | |
3121 | case '1': /* hardware-breakpoint */ | |
3122 | case '2': /* write watchpoint */ | |
3123 | case '3': /* read watchpoint */ | |
3124 | case '4': /* access watchpoint */ | |
3125 | require_running (own_buf); | |
3126 | if (insert && the_target->insert_point != NULL) | |
3127 | res = (*the_target->insert_point) (type, addr, len); | |
3128 | else if (!insert && the_target->remove_point != NULL) | |
3129 | res = (*the_target->remove_point) (type, addr, len); | |
3130 | break; | |
3131 | default: | |
3132 | break; | |
3133 | } | |
bd99dc85 | 3134 | |
c6314022 AR |
3135 | if (res == 0) |
3136 | write_ok (own_buf); | |
3137 | else if (res == 1) | |
3138 | /* Unsupported. */ | |
3139 | own_buf[0] = '\0'; | |
bd99dc85 | 3140 | else |
c6314022 | 3141 | write_enn (own_buf); |
bd99dc85 PA |
3142 | break; |
3143 | } | |
3144 | case 'k': | |
3145 | response_needed = 0; | |
3146 | if (!target_running ()) | |
95954743 PA |
3147 | /* The packet we received doesn't make sense - but we can't |
3148 | reply to it, either. */ | |
8336d594 | 3149 | return 0; |
c906108c | 3150 | |
95954743 PA |
3151 | fprintf (stderr, "Killing all inferiors\n"); |
3152 | for_each_inferior (&all_processes, kill_inferior_callback); | |
c906108c | 3153 | |
bd99dc85 PA |
3154 | /* When using the extended protocol, we wait with no program |
3155 | running. The traditional protocol will exit instead. */ | |
3156 | if (extended_protocol) | |
3157 | { | |
3158 | last_status.kind = TARGET_WAITKIND_EXITED; | |
3159 | last_status.value.sig = TARGET_SIGNAL_KILL; | |
8336d594 | 3160 | return 0; |
bd99dc85 PA |
3161 | } |
3162 | else | |
8336d594 PA |
3163 | exit (0); |
3164 | ||
bd99dc85 PA |
3165 | case 'T': |
3166 | { | |
95954743 | 3167 | ptid_t gdb_id, thread_id; |
bd99dc85 PA |
3168 | |
3169 | require_running (own_buf); | |
95954743 PA |
3170 | |
3171 | gdb_id = read_ptid (&own_buf[1], NULL); | |
bd99dc85 | 3172 | thread_id = gdb_id_to_thread_id (gdb_id); |
95954743 | 3173 | if (ptid_equal (thread_id, null_ptid)) |
bd99dc85 PA |
3174 | { |
3175 | write_enn (own_buf); | |
3176 | break; | |
3177 | } | |
3178 | ||
3179 | if (mythread_alive (thread_id)) | |
3180 | write_ok (own_buf); | |
3181 | else | |
3182 | write_enn (own_buf); | |
3183 | } | |
3184 | break; | |
3185 | case 'R': | |
3186 | response_needed = 0; | |
3187 | ||
3188 | /* Restarting the inferior is only supported in the extended | |
3189 | protocol. */ | |
3190 | if (extended_protocol) | |
3191 | { | |
3192 | if (target_running ()) | |
95954743 PA |
3193 | for_each_inferior (&all_processes, |
3194 | kill_inferior_callback); | |
bd99dc85 PA |
3195 | fprintf (stderr, "GDBserver restarting\n"); |
3196 | ||
3197 | /* Wait till we are at 1st instruction in prog. */ | |
3198 | if (program_argv != NULL) | |
3199 | start_inferior (program_argv); | |
3200 | else | |
3201 | { | |
3202 | last_status.kind = TARGET_WAITKIND_EXITED; | |
3203 | last_status.value.sig = TARGET_SIGNAL_KILL; | |
3204 | } | |
8336d594 | 3205 | return 0; |
c906108c SS |
3206 | } |
3207 | else | |
3208 | { | |
bd99dc85 PA |
3209 | /* It is a request we don't understand. Respond with an |
3210 | empty packet so that gdb knows that we don't support this | |
3211 | request. */ | |
3212 | own_buf[0] = '\0'; | |
3213 | break; | |
3214 | } | |
3215 | case 'v': | |
3216 | /* Extended (long) request. */ | |
3217 | handle_v_requests (own_buf, packet_len, &new_packet_len); | |
3218 | break; | |
3219 | ||
3220 | default: | |
3221 | /* It is a request we don't understand. Respond with an empty | |
3222 | packet so that gdb knows that we don't support this | |
3223 | request. */ | |
3224 | own_buf[0] = '\0'; | |
3225 | break; | |
3226 | } | |
3227 | ||
3228 | if (new_packet_len != -1) | |
3229 | putpkt_binary (own_buf, new_packet_len); | |
3230 | else | |
3231 | putpkt (own_buf); | |
3232 | ||
3233 | response_needed = 0; | |
3234 | ||
3235 | if (!extended_protocol && have_ran && !target_running ()) | |
3236 | { | |
3237 | /* In non-stop, defer exiting until GDB had a chance to query | |
3238 | the whole vStopped list (until it gets an OK). */ | |
3239 | if (!notif_queue) | |
3240 | { | |
3241 | fprintf (stderr, "GDBserver exiting\n"); | |
c906108c | 3242 | remote_close (); |
bd99dc85 | 3243 | exit (0); |
c906108c SS |
3244 | } |
3245 | } | |
8336d594 PA |
3246 | |
3247 | if (exit_requested) | |
3248 | return -1; | |
3249 | ||
3250 | return 0; | |
c906108c | 3251 | } |
bd99dc85 PA |
3252 | |
3253 | /* Event-loop callback for serial events. */ | |
3254 | ||
8336d594 | 3255 | int |
bd99dc85 PA |
3256 | handle_serial_event (int err, gdb_client_data client_data) |
3257 | { | |
3258 | if (debug_threads) | |
3259 | fprintf (stderr, "handling possible serial event\n"); | |
3260 | ||
3261 | /* Really handle it. */ | |
8336d594 PA |
3262 | if (process_serial_event () < 0) |
3263 | return -1; | |
bd99dc85 PA |
3264 | |
3265 | /* Be sure to not change the selected inferior behind GDB's back. | |
3266 | Important in the non-stop mode asynchronous protocol. */ | |
3267 | set_desired_inferior (1); | |
8336d594 PA |
3268 | |
3269 | return 0; | |
bd99dc85 PA |
3270 | } |
3271 | ||
3272 | /* Event-loop callback for target events. */ | |
3273 | ||
8336d594 | 3274 | int |
bd99dc85 PA |
3275 | handle_target_event (int err, gdb_client_data client_data) |
3276 | { | |
3277 | if (debug_threads) | |
3278 | fprintf (stderr, "handling possible target event\n"); | |
3279 | ||
95954743 PA |
3280 | last_ptid = mywait (minus_one_ptid, &last_status, |
3281 | TARGET_WNOHANG, 1); | |
bd99dc85 PA |
3282 | |
3283 | if (last_status.kind != TARGET_WAITKIND_IGNORE) | |
3284 | { | |
8336d594 PA |
3285 | int pid = ptid_get_pid (last_ptid); |
3286 | struct process_info *process = find_process_pid (pid); | |
3287 | int forward_event = !gdb_connected () || process->gdb_detached; | |
3288 | ||
3289 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
3290 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
f9e39928 PA |
3291 | { |
3292 | mark_breakpoints_out (process); | |
3293 | mourn_inferior (process); | |
3294 | } | |
ce1a5b52 | 3295 | else |
d20a8ad9 PA |
3296 | { |
3297 | /* We're reporting this thread as stopped. Update its | |
3298 | "want-stopped" state to what the client wants, until it | |
3299 | gets a new resume action. */ | |
3300 | current_inferior->last_resume_kind = resume_stop; | |
3301 | current_inferior->last_status = last_status; | |
3302 | } | |
8336d594 PA |
3303 | |
3304 | if (forward_event) | |
3305 | { | |
3306 | if (!target_running ()) | |
3307 | { | |
3308 | /* The last process exited. We're done. */ | |
3309 | exit (0); | |
3310 | } | |
3311 | ||
3312 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
3313 | { | |
3314 | /* A thread stopped with a signal, but gdb isn't | |
3315 | connected to handle it. Pass it down to the | |
3316 | inferior, as if it wasn't being traced. */ | |
3317 | struct thread_resume resume_info; | |
3318 | ||
3319 | if (debug_threads) | |
3320 | fprintf (stderr, | |
3321 | "GDB not connected; forwarding event %d for [%s]\n", | |
3322 | (int) last_status.kind, | |
3323 | target_pid_to_str (last_ptid)); | |
3324 | ||
3325 | resume_info.thread = last_ptid; | |
3326 | resume_info.kind = resume_continue; | |
30d50328 | 3327 | resume_info.sig = target_signal_to_host (last_status.value.sig); |
8336d594 PA |
3328 | (*the_target->resume) (&resume_info, 1); |
3329 | } | |
3330 | else if (debug_threads) | |
3331 | fprintf (stderr, "GDB not connected; ignoring event %d for [%s]\n", | |
3332 | (int) last_status.kind, | |
3333 | target_pid_to_str (last_ptid)); | |
3334 | } | |
3335 | else | |
3336 | { | |
3337 | /* Something interesting. Tell GDB about it. */ | |
3338 | push_event (last_ptid, &last_status); | |
3339 | } | |
bd99dc85 PA |
3340 | } |
3341 | ||
3342 | /* Be sure to not change the selected inferior behind GDB's back. | |
3343 | Important in the non-stop mode asynchronous protocol. */ | |
3344 | set_desired_inferior (1); | |
8336d594 PA |
3345 | |
3346 | return 0; | |
bd99dc85 | 3347 | } |