Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Main code for remote server for GDB. |
32d0add0 | 2 | Copyright (C) 1989-2015 Free Software Foundation, Inc. |
c906108c | 3 | |
c5aa993b | 4 | This file is part of GDB. |
c906108c | 5 | |
c5aa993b JM |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 8 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 9 | (at your option) any later version. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
c906108c | 15 | |
c5aa993b | 16 | You should have received a copy of the GNU General Public License |
a9762ec7 | 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
18 | |
19 | #include "server.h" | |
623b6bdf | 20 | #include "gdbthread.h" |
d1feda86 | 21 | #include "agent.h" |
14a00470 | 22 | #include "notif.h" |
3aee8918 | 23 | #include "tdesc.h" |
9c3d6531 | 24 | #include "rsp-low.h" |
c906108c | 25 | |
87ce2a04 | 26 | #include <ctype.h> |
a9fa9f7d | 27 | #include <unistd.h> |
68070c10 | 28 | #if HAVE_SIGNAL_H |
a9fa9f7d | 29 | #include <signal.h> |
68070c10 | 30 | #endif |
87ce2a04 | 31 | #include "gdb_vecs.h" |
8bdce1ff | 32 | #include "gdb_wait.h" |
9accd112 | 33 | #include "btrace-common.h" |
602e3198 | 34 | #include "filestuff.h" |
c144c7a0 | 35 | #include "tracepoint.h" |
799cdc37 | 36 | #include "dll.h" |
533b0600 | 37 | #include "hostio.h" |
a9fa9f7d | 38 | |
122f36ef PA |
39 | /* The thread set with an `Hc' packet. `Hc' is deprecated in favor of |
40 | `vCont'. Note the multi-process extensions made `vCont' a | |
41 | requirement, so `Hc pPID.TID' is pretty much undefined. So | |
42 | CONT_THREAD can be null_ptid for no `Hc' thread, minus_one_ptid for | |
43 | resuming all threads of the process (again, `Hc' isn't used for | |
40e91bc7 | 44 | multi-process), or a specific thread ptid_t. */ |
95954743 | 45 | ptid_t cont_thread; |
122f36ef PA |
46 | |
47 | /* The thread set with an `Hg' packet. */ | |
95954743 | 48 | ptid_t general_thread; |
5b1c542e | 49 | |
0d62e5e8 DJ |
50 | int server_waiting; |
51 | ||
2d717e4f | 52 | static int extended_protocol; |
2d717e4f DJ |
53 | static int response_needed; |
54 | static int exit_requested; | |
55 | ||
03f2bd59 JK |
56 | /* --once: Exit after the first connection has closed. */ |
57 | int run_once; | |
58 | ||
95954743 | 59 | int multi_process; |
bd99dc85 | 60 | int non_stop; |
1ec68e26 PA |
61 | int swbreak_feature; |
62 | int hwbreak_feature; | |
bd99dc85 | 63 | |
03583c20 UW |
64 | /* Whether we should attempt to disable the operating system's address |
65 | space randomization feature before starting an inferior. */ | |
66 | int disable_randomization = 1; | |
67 | ||
ccd213ac | 68 | static char **program_argv, **wrapper_argv; |
2d717e4f | 69 | |
a493e3e2 PA |
70 | int pass_signals[GDB_SIGNAL_LAST]; |
71 | int program_signals[GDB_SIGNAL_LAST]; | |
9b224c5e | 72 | int program_signals_p; |
89be2091 | 73 | |
a9fa9f7d DJ |
74 | /* The PID of the originally created or attached inferior. Used to |
75 | send signals to the process when GDB sends us an asynchronous interrupt | |
76 | (user hitting Control-C in the client), and to wait for the child to exit | |
77 | when no longer debugging it. */ | |
78 | ||
a1928bad | 79 | unsigned long signal_pid; |
a9fa9f7d | 80 | |
290fadea RS |
81 | #ifdef SIGTTOU |
82 | /* A file descriptor for the controlling terminal. */ | |
83 | int terminal_fd; | |
84 | ||
85 | /* TERMINAL_FD's original foreground group. */ | |
86 | pid_t old_foreground_pgrp; | |
87 | ||
88 | /* Hand back terminal ownership to the original foreground group. */ | |
89 | ||
90 | static void | |
91 | restore_old_foreground_pgrp (void) | |
92 | { | |
93 | tcsetpgrp (terminal_fd, old_foreground_pgrp); | |
94 | } | |
95 | #endif | |
96 | ||
ec56be1b PA |
97 | /* Set if you want to disable optional thread related packets support |
98 | in gdbserver, for the sake of testing GDB against stubs that don't | |
99 | support them. */ | |
100 | int disable_packet_vCont; | |
101 | int disable_packet_Tthread; | |
102 | int disable_packet_qC; | |
103 | int disable_packet_qfThreadInfo; | |
104 | ||
5b1c542e PA |
105 | /* Last status reported to GDB. */ |
106 | static struct target_waitstatus last_status; | |
95954743 | 107 | static ptid_t last_ptid; |
5b1c542e | 108 | |
bd99dc85 PA |
109 | static char *own_buf; |
110 | static unsigned char *mem_buf; | |
111 | ||
14a00470 YQ |
112 | /* A sub-class of 'struct notif_event' for stop, holding information |
113 | relative to a single stop reply. We keep a queue of these to | |
114 | push to GDB in non-stop mode. */ | |
115 | ||
bd99dc85 PA |
116 | struct vstop_notif |
117 | { | |
14a00470 | 118 | struct notif_event base; |
bd99dc85 PA |
119 | |
120 | /* Thread or process that got the event. */ | |
95954743 | 121 | ptid_t ptid; |
bd99dc85 PA |
122 | |
123 | /* Event info. */ | |
124 | struct target_waitstatus status; | |
125 | }; | |
126 | ||
f4abbc16 MM |
127 | /* The current btrace configuration. This is gdbserver's mirror of GDB's |
128 | btrace configuration. */ | |
129 | static struct btrace_config current_btrace_conf; | |
130 | ||
14a00470 | 131 | DEFINE_QUEUE_P (notif_event_p); |
bd99dc85 PA |
132 | |
133 | /* Put a stop reply to the stop reply queue. */ | |
134 | ||
135 | static void | |
95954743 | 136 | queue_stop_reply (ptid_t ptid, struct target_waitstatus *status) |
bd99dc85 | 137 | { |
14a00470 | 138 | struct vstop_notif *new_notif = xmalloc (sizeof (*new_notif)); |
bd99dc85 | 139 | |
bd99dc85 PA |
140 | new_notif->ptid = ptid; |
141 | new_notif->status = *status; | |
142 | ||
14a00470 | 143 | notif_event_enque (¬if_stop, (struct notif_event *) new_notif); |
bd99dc85 PA |
144 | } |
145 | ||
14a00470 YQ |
146 | static int |
147 | remove_all_on_match_pid (QUEUE (notif_event_p) *q, | |
148 | QUEUE_ITER (notif_event_p) *iter, | |
149 | struct notif_event *event, | |
150 | void *data) | |
bd99dc85 | 151 | { |
14a00470 | 152 | int *pid = data; |
d20a8ad9 | 153 | |
14a00470 YQ |
154 | if (*pid == -1 |
155 | || ptid_get_pid (((struct vstop_notif *) event)->ptid) == *pid) | |
bd99dc85 | 156 | { |
14a00470 YQ |
157 | if (q->free_func != NULL) |
158 | q->free_func (event); | |
159 | ||
160 | QUEUE_remove_elem (notif_event_p, q, iter); | |
bd99dc85 | 161 | } |
14a00470 YQ |
162 | |
163 | return 1; | |
bd99dc85 PA |
164 | } |
165 | ||
95954743 PA |
166 | /* Get rid of the currently pending stop replies for PID. If PID is |
167 | -1, then apply to all processes. */ | |
bd99dc85 PA |
168 | |
169 | static void | |
95954743 | 170 | discard_queued_stop_replies (int pid) |
bd99dc85 | 171 | { |
14a00470 YQ |
172 | QUEUE_iterate (notif_event_p, notif_stop.queue, |
173 | remove_all_on_match_pid, &pid); | |
bd99dc85 PA |
174 | } |
175 | ||
bd99dc85 | 176 | static void |
14a00470 | 177 | vstop_notif_reply (struct notif_event *event, char *own_buf) |
bd99dc85 | 178 | { |
14a00470 YQ |
179 | struct vstop_notif *vstop = (struct vstop_notif *) event; |
180 | ||
181 | prepare_resume_reply (own_buf, vstop->ptid, &vstop->status); | |
bd99dc85 PA |
182 | } |
183 | ||
14a00470 YQ |
184 | struct notif_server notif_stop = |
185 | { | |
186 | "vStopped", "Stop", NULL, vstop_notif_reply, | |
187 | }; | |
188 | ||
2d717e4f DJ |
189 | static int |
190 | target_running (void) | |
191 | { | |
649ebbca | 192 | return get_first_thread () != NULL; |
2d717e4f DJ |
193 | } |
194 | ||
fc620387 | 195 | static int |
5b1c542e | 196 | start_inferior (char **argv) |
c906108c | 197 | { |
ccd213ac | 198 | char **new_argv = argv; |
2d717e4f | 199 | |
ccd213ac DJ |
200 | if (wrapper_argv != NULL) |
201 | { | |
202 | int i, count = 1; | |
203 | ||
204 | for (i = 0; wrapper_argv[i] != NULL; i++) | |
205 | count++; | |
206 | for (i = 0; argv[i] != NULL; i++) | |
207 | count++; | |
208 | new_argv = alloca (sizeof (char *) * count); | |
209 | count = 0; | |
210 | for (i = 0; wrapper_argv[i] != NULL; i++) | |
211 | new_argv[count++] = wrapper_argv[i]; | |
212 | for (i = 0; argv[i] != NULL; i++) | |
213 | new_argv[count++] = argv[i]; | |
214 | new_argv[count] = NULL; | |
215 | } | |
216 | ||
65730243 DE |
217 | if (debug_threads) |
218 | { | |
219 | int i; | |
220 | for (i = 0; new_argv[i]; ++i) | |
87ce2a04 DE |
221 | debug_printf ("new_argv[%d] = \"%s\"\n", i, new_argv[i]); |
222 | debug_flush (); | |
65730243 DE |
223 | } |
224 | ||
b80864fb | 225 | #ifdef SIGTTOU |
a9fa9f7d DJ |
226 | signal (SIGTTOU, SIG_DFL); |
227 | signal (SIGTTIN, SIG_DFL); | |
b80864fb | 228 | #endif |
a9fa9f7d | 229 | |
ccd213ac | 230 | signal_pid = create_inferior (new_argv[0], new_argv); |
0d62e5e8 | 231 | |
c588c53c MS |
232 | /* FIXME: we don't actually know at this point that the create |
233 | actually succeeded. We won't know that until we wait. */ | |
a1928bad | 234 | fprintf (stderr, "Process %s created; pid = %ld\n", argv[0], |
a9fa9f7d | 235 | signal_pid); |
b80864fb | 236 | fflush (stderr); |
a9fa9f7d | 237 | |
b80864fb | 238 | #ifdef SIGTTOU |
a9fa9f7d DJ |
239 | signal (SIGTTOU, SIG_IGN); |
240 | signal (SIGTTIN, SIG_IGN); | |
290fadea RS |
241 | terminal_fd = fileno (stderr); |
242 | old_foreground_pgrp = tcgetpgrp (terminal_fd); | |
243 | tcsetpgrp (terminal_fd, signal_pid); | |
244 | atexit (restore_old_foreground_pgrp); | |
b80864fb | 245 | #endif |
c906108c | 246 | |
ccd213ac DJ |
247 | if (wrapper_argv != NULL) |
248 | { | |
249 | struct thread_resume resume_info; | |
ccd213ac | 250 | |
ee47b2f8 | 251 | memset (&resume_info, 0, sizeof (resume_info)); |
95954743 | 252 | resume_info.thread = pid_to_ptid (signal_pid); |
bd99dc85 | 253 | resume_info.kind = resume_continue; |
ccd213ac | 254 | resume_info.sig = 0; |
ccd213ac | 255 | |
06db92f0 | 256 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
bd99dc85 | 257 | |
5b1c542e PA |
258 | if (last_status.kind != TARGET_WAITKIND_STOPPED) |
259 | return signal_pid; | |
ccd213ac DJ |
260 | |
261 | do | |
262 | { | |
2bd7c093 | 263 | (*the_target->resume) (&resume_info, 1); |
ccd213ac | 264 | |
06db92f0 | 265 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
5b1c542e PA |
266 | if (last_status.kind != TARGET_WAITKIND_STOPPED) |
267 | return signal_pid; | |
d20a8ad9 | 268 | |
0bfdf32f GB |
269 | current_thread->last_resume_kind = resume_stop; |
270 | current_thread->last_status = last_status; | |
ccd213ac | 271 | } |
a493e3e2 | 272 | while (last_status.value.sig != GDB_SIGNAL_TRAP); |
ccd213ac | 273 | |
5b1c542e | 274 | return signal_pid; |
ccd213ac DJ |
275 | } |
276 | ||
5b1c542e PA |
277 | /* Wait till we are at 1st instruction in program, return new pid |
278 | (assuming success). */ | |
95954743 | 279 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
5b1c542e | 280 | |
d20a8ad9 PA |
281 | if (last_status.kind != TARGET_WAITKIND_EXITED |
282 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
283 | { | |
0bfdf32f GB |
284 | current_thread->last_resume_kind = resume_stop; |
285 | current_thread->last_status = last_status; | |
d20a8ad9 | 286 | } |
80ad801e PA |
287 | else |
288 | mourn_inferior (find_process_pid (ptid_get_pid (last_ptid))); | |
d20a8ad9 | 289 | |
5b1c542e | 290 | return signal_pid; |
c906108c SS |
291 | } |
292 | ||
45b7b345 | 293 | static int |
5b1c542e | 294 | attach_inferior (int pid) |
45b7b345 DJ |
295 | { |
296 | /* myattach should return -1 if attaching is unsupported, | |
297 | 0 if it succeeded, and call error() otherwise. */ | |
a9fa9f7d | 298 | |
45b7b345 DJ |
299 | if (myattach (pid) != 0) |
300 | return -1; | |
301 | ||
6910d122 | 302 | fprintf (stderr, "Attached; pid = %d\n", pid); |
b80864fb | 303 | fflush (stderr); |
6910d122 | 304 | |
a9fa9f7d DJ |
305 | /* FIXME - It may be that we should get the SIGNAL_PID from the |
306 | attach function, so that it can be the main thread instead of | |
307 | whichever we were told to attach to. */ | |
308 | signal_pid = pid; | |
309 | ||
bd99dc85 PA |
310 | if (!non_stop) |
311 | { | |
95954743 | 312 | last_ptid = mywait (pid_to_ptid (pid), &last_status, 0, 0); |
bd99dc85 PA |
313 | |
314 | /* GDB knows to ignore the first SIGSTOP after attaching to a running | |
315 | process using the "attach" command, but this is different; it's | |
316 | just using "target remote". Pretend it's just starting up. */ | |
317 | if (last_status.kind == TARGET_WAITKIND_STOPPED | |
a493e3e2 PA |
318 | && last_status.value.sig == GDB_SIGNAL_STOP) |
319 | last_status.value.sig = GDB_SIGNAL_TRAP; | |
d20a8ad9 | 320 | |
0bfdf32f GB |
321 | current_thread->last_resume_kind = resume_stop; |
322 | current_thread->last_status = last_status; | |
bd99dc85 | 323 | } |
9db87ebd | 324 | |
45b7b345 DJ |
325 | return 0; |
326 | } | |
327 | ||
c906108c | 328 | extern int remote_debug; |
ce3a066d | 329 | |
0876f84a DJ |
330 | /* Decode a qXfer read request. Return 0 if everything looks OK, |
331 | or -1 otherwise. */ | |
332 | ||
333 | static int | |
d08aafef | 334 | decode_xfer_read (char *buf, CORE_ADDR *ofs, unsigned int *len) |
0876f84a | 335 | { |
d08aafef PA |
336 | /* After the read marker and annex, qXfer looks like a |
337 | traditional 'm' packet. */ | |
338 | decode_m_packet (buf, ofs, len); | |
339 | ||
340 | return 0; | |
341 | } | |
342 | ||
343 | static int | |
344 | decode_xfer (char *buf, char **object, char **rw, char **annex, char **offset) | |
345 | { | |
346 | /* Extract and NUL-terminate the object. */ | |
347 | *object = buf; | |
348 | while (*buf && *buf != ':') | |
349 | buf++; | |
350 | if (*buf == '\0') | |
351 | return -1; | |
352 | *buf++ = 0; | |
353 | ||
354 | /* Extract and NUL-terminate the read/write action. */ | |
355 | *rw = buf; | |
356 | while (*buf && *buf != ':') | |
357 | buf++; | |
358 | if (*buf == '\0') | |
359 | return -1; | |
360 | *buf++ = 0; | |
361 | ||
0876f84a DJ |
362 | /* Extract and NUL-terminate the annex. */ |
363 | *annex = buf; | |
364 | while (*buf && *buf != ':') | |
365 | buf++; | |
366 | if (*buf == '\0') | |
367 | return -1; | |
368 | *buf++ = 0; | |
369 | ||
d08aafef | 370 | *offset = buf; |
0876f84a DJ |
371 | return 0; |
372 | } | |
373 | ||
374 | /* Write the response to a successful qXfer read. Returns the | |
375 | length of the (binary) data stored in BUF, corresponding | |
376 | to as much of DATA/LEN as we could fit. IS_MORE controls | |
377 | the first character of the response. */ | |
378 | static int | |
23181151 | 379 | write_qxfer_response (char *buf, const void *data, int len, int is_more) |
0876f84a DJ |
380 | { |
381 | int out_len; | |
382 | ||
383 | if (is_more) | |
384 | buf[0] = 'm'; | |
385 | else | |
386 | buf[0] = 'l'; | |
387 | ||
388 | return remote_escape_output (data, len, (unsigned char *) buf + 1, &out_len, | |
389 | PBUFSIZ - 2) + 1; | |
390 | } | |
391 | ||
f4abbc16 | 392 | /* Handle btrace enabling in BTS format. */ |
9accd112 MM |
393 | |
394 | static const char * | |
f4abbc16 | 395 | handle_btrace_enable_bts (struct thread_info *thread) |
9accd112 MM |
396 | { |
397 | if (thread->btrace != NULL) | |
398 | return "E.Btrace already enabled."; | |
399 | ||
f4abbc16 MM |
400 | current_btrace_conf.format = BTRACE_FORMAT_BTS; |
401 | thread->btrace = target_enable_btrace (thread->entry.id, | |
402 | ¤t_btrace_conf); | |
9accd112 MM |
403 | if (thread->btrace == NULL) |
404 | return "E.Could not enable btrace."; | |
405 | ||
406 | return NULL; | |
407 | } | |
408 | ||
409 | /* Handle btrace disabling. */ | |
410 | ||
411 | static const char * | |
412 | handle_btrace_disable (struct thread_info *thread) | |
413 | { | |
414 | ||
415 | if (thread->btrace == NULL) | |
416 | return "E.Branch tracing not enabled."; | |
417 | ||
418 | if (target_disable_btrace (thread->btrace) != 0) | |
419 | return "E.Could not disable branch tracing."; | |
420 | ||
421 | thread->btrace = NULL; | |
422 | return NULL; | |
423 | } | |
424 | ||
425 | /* Handle the "Qbtrace" packet. */ | |
426 | ||
427 | static int | |
428 | handle_btrace_general_set (char *own_buf) | |
429 | { | |
430 | struct thread_info *thread; | |
431 | const char *err; | |
432 | char *op; | |
433 | ||
61012eef | 434 | if (!startswith (own_buf, "Qbtrace:")) |
9accd112 MM |
435 | return 0; |
436 | ||
437 | op = own_buf + strlen ("Qbtrace:"); | |
438 | ||
9accd112 MM |
439 | if (ptid_equal (general_thread, null_ptid) |
440 | || ptid_equal (general_thread, minus_one_ptid)) | |
441 | { | |
442 | strcpy (own_buf, "E.Must select a single thread."); | |
443 | return -1; | |
444 | } | |
445 | ||
446 | thread = find_thread_ptid (general_thread); | |
447 | if (thread == NULL) | |
448 | { | |
449 | strcpy (own_buf, "E.No such thread."); | |
450 | return -1; | |
451 | } | |
452 | ||
453 | err = NULL; | |
454 | ||
455 | if (strcmp (op, "bts") == 0) | |
f4abbc16 | 456 | err = handle_btrace_enable_bts (thread); |
9accd112 MM |
457 | else if (strcmp (op, "off") == 0) |
458 | err = handle_btrace_disable (thread); | |
459 | else | |
460 | err = "E.Bad Qbtrace operation. Use bts or off."; | |
461 | ||
462 | if (err != 0) | |
463 | strcpy (own_buf, err); | |
464 | else | |
465 | write_ok (own_buf); | |
466 | ||
467 | return 1; | |
468 | } | |
469 | ||
d33501a5 MM |
470 | /* Handle the "Qbtrace-conf" packet. */ |
471 | ||
472 | static int | |
473 | handle_btrace_conf_general_set (char *own_buf) | |
474 | { | |
475 | struct thread_info *thread; | |
476 | char *op; | |
477 | ||
61012eef | 478 | if (!startswith (own_buf, "Qbtrace-conf:")) |
d33501a5 MM |
479 | return 0; |
480 | ||
481 | op = own_buf + strlen ("Qbtrace-conf:"); | |
482 | ||
483 | if (ptid_equal (general_thread, null_ptid) | |
484 | || ptid_equal (general_thread, minus_one_ptid)) | |
485 | { | |
486 | strcpy (own_buf, "E.Must select a single thread."); | |
487 | return -1; | |
488 | } | |
489 | ||
490 | thread = find_thread_ptid (general_thread); | |
491 | if (thread == NULL) | |
492 | { | |
493 | strcpy (own_buf, "E.No such thread."); | |
494 | return -1; | |
495 | } | |
496 | ||
61012eef | 497 | if (startswith (op, "bts:size=")) |
d33501a5 MM |
498 | { |
499 | unsigned long size; | |
500 | char *endp = NULL; | |
501 | ||
502 | errno = 0; | |
503 | size = strtoul (op + strlen ("bts:size="), &endp, 16); | |
504 | if (endp == NULL || *endp != 0 || errno != 0 || size > UINT_MAX) | |
505 | { | |
506 | strcpy (own_buf, "E.Bad size value."); | |
507 | return -1; | |
508 | } | |
509 | ||
510 | current_btrace_conf.bts.size = (unsigned int) size; | |
511 | } | |
512 | else | |
513 | { | |
514 | strcpy (own_buf, "E.Bad Qbtrace configuration option."); | |
515 | return -1; | |
516 | } | |
517 | ||
518 | write_ok (own_buf); | |
519 | return 1; | |
520 | } | |
521 | ||
89be2091 | 522 | /* Handle all of the extended 'Q' packets. */ |
ae1ada35 DE |
523 | |
524 | static void | |
89be2091 DJ |
525 | handle_general_set (char *own_buf) |
526 | { | |
61012eef | 527 | if (startswith (own_buf, "QPassSignals:")) |
89be2091 | 528 | { |
a493e3e2 | 529 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
89be2091 DJ |
530 | const char *p = own_buf + strlen ("QPassSignals:"); |
531 | CORE_ADDR cursig; | |
532 | ||
533 | p = decode_address_to_semicolon (&cursig, p); | |
534 | for (i = 0; i < numsigs; i++) | |
535 | { | |
536 | if (i == cursig) | |
537 | { | |
538 | pass_signals[i] = 1; | |
539 | if (*p == '\0') | |
540 | /* Keep looping, to clear the remaining signals. */ | |
541 | cursig = -1; | |
542 | else | |
543 | p = decode_address_to_semicolon (&cursig, p); | |
544 | } | |
545 | else | |
546 | pass_signals[i] = 0; | |
547 | } | |
548 | strcpy (own_buf, "OK"); | |
549 | return; | |
550 | } | |
551 | ||
61012eef | 552 | if (startswith (own_buf, "QProgramSignals:")) |
9b224c5e | 553 | { |
a493e3e2 | 554 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
9b224c5e PA |
555 | const char *p = own_buf + strlen ("QProgramSignals:"); |
556 | CORE_ADDR cursig; | |
557 | ||
558 | program_signals_p = 1; | |
559 | ||
560 | p = decode_address_to_semicolon (&cursig, p); | |
561 | for (i = 0; i < numsigs; i++) | |
562 | { | |
563 | if (i == cursig) | |
564 | { | |
565 | program_signals[i] = 1; | |
566 | if (*p == '\0') | |
567 | /* Keep looping, to clear the remaining signals. */ | |
568 | cursig = -1; | |
569 | else | |
570 | p = decode_address_to_semicolon (&cursig, p); | |
571 | } | |
572 | else | |
573 | program_signals[i] = 0; | |
574 | } | |
575 | strcpy (own_buf, "OK"); | |
576 | return; | |
577 | } | |
578 | ||
a6f3e723 SL |
579 | if (strcmp (own_buf, "QStartNoAckMode") == 0) |
580 | { | |
581 | if (remote_debug) | |
582 | { | |
583 | fprintf (stderr, "[noack mode enabled]\n"); | |
584 | fflush (stderr); | |
585 | } | |
586 | ||
587 | noack_mode = 1; | |
588 | write_ok (own_buf); | |
589 | return; | |
590 | } | |
591 | ||
61012eef | 592 | if (startswith (own_buf, "QNonStop:")) |
bd99dc85 PA |
593 | { |
594 | char *mode = own_buf + 9; | |
595 | int req = -1; | |
b2333d22 | 596 | const char *req_str; |
bd99dc85 PA |
597 | |
598 | if (strcmp (mode, "0") == 0) | |
599 | req = 0; | |
600 | else if (strcmp (mode, "1") == 0) | |
601 | req = 1; | |
602 | else | |
603 | { | |
604 | /* We don't know what this mode is, so complain to | |
605 | GDB. */ | |
606 | fprintf (stderr, "Unknown non-stop mode requested: %s\n", | |
607 | own_buf); | |
608 | write_enn (own_buf); | |
609 | return; | |
610 | } | |
611 | ||
612 | req_str = req ? "non-stop" : "all-stop"; | |
613 | if (start_non_stop (req) != 0) | |
614 | { | |
615 | fprintf (stderr, "Setting %s mode failed\n", req_str); | |
616 | write_enn (own_buf); | |
617 | return; | |
618 | } | |
619 | ||
620 | non_stop = req; | |
621 | ||
622 | if (remote_debug) | |
623 | fprintf (stderr, "[%s mode enabled]\n", req_str); | |
624 | ||
625 | write_ok (own_buf); | |
626 | return; | |
627 | } | |
628 | ||
61012eef | 629 | if (startswith (own_buf, "QDisableRandomization:")) |
03583c20 UW |
630 | { |
631 | char *packet = own_buf + strlen ("QDisableRandomization:"); | |
632 | ULONGEST setting; | |
633 | ||
634 | unpack_varlen_hex (packet, &setting); | |
635 | disable_randomization = setting; | |
636 | ||
637 | if (remote_debug) | |
638 | { | |
639 | if (disable_randomization) | |
640 | fprintf (stderr, "[address space randomization disabled]\n"); | |
641 | else | |
642 | fprintf (stderr, "[address space randomization enabled]\n"); | |
643 | } | |
644 | ||
645 | write_ok (own_buf); | |
646 | return; | |
647 | } | |
648 | ||
219f2f23 PA |
649 | if (target_supports_tracepoints () |
650 | && handle_tracepoint_general_set (own_buf)) | |
651 | return; | |
652 | ||
61012eef | 653 | if (startswith (own_buf, "QAgent:")) |
d1feda86 YQ |
654 | { |
655 | char *mode = own_buf + strlen ("QAgent:"); | |
656 | int req = 0; | |
657 | ||
658 | if (strcmp (mode, "0") == 0) | |
659 | req = 0; | |
660 | else if (strcmp (mode, "1") == 0) | |
661 | req = 1; | |
662 | else | |
663 | { | |
664 | /* We don't know what this value is, so complain to GDB. */ | |
665 | sprintf (own_buf, "E.Unknown QAgent value"); | |
666 | return; | |
667 | } | |
668 | ||
669 | /* Update the flag. */ | |
670 | use_agent = req; | |
671 | if (remote_debug) | |
672 | fprintf (stderr, "[%s agent]\n", req ? "Enable" : "Disable"); | |
673 | write_ok (own_buf); | |
674 | return; | |
675 | } | |
676 | ||
9accd112 MM |
677 | if (handle_btrace_general_set (own_buf)) |
678 | return; | |
679 | ||
d33501a5 MM |
680 | if (handle_btrace_conf_general_set (own_buf)) |
681 | return; | |
682 | ||
89be2091 DJ |
683 | /* Otherwise we didn't know what packet it was. Say we didn't |
684 | understand it. */ | |
685 | own_buf[0] = 0; | |
686 | } | |
687 | ||
23181151 | 688 | static const char * |
fb1e4ffc | 689 | get_features_xml (const char *annex) |
23181151 | 690 | { |
3aee8918 PA |
691 | const struct target_desc *desc = current_target_desc (); |
692 | ||
693 | /* `desc->xmltarget' defines what to return when looking for the | |
694 | "target.xml" file. Its contents can either be verbatim XML code | |
695 | (prefixed with a '@') or else the name of the actual XML file to | |
696 | be used in place of "target.xml". | |
fb1e4ffc | 697 | |
9b4b61c8 UW |
698 | This variable is set up from the auto-generated |
699 | init_registers_... routine for the current target. */ | |
fb1e4ffc | 700 | |
3aee8918 | 701 | if (desc->xmltarget != NULL && strcmp (annex, "target.xml") == 0) |
23181151 | 702 | { |
3aee8918 PA |
703 | if (*desc->xmltarget == '@') |
704 | return desc->xmltarget + 1; | |
23181151 | 705 | else |
3aee8918 | 706 | annex = desc->xmltarget; |
23181151 DJ |
707 | } |
708 | ||
9b4b61c8 UW |
709 | #ifdef USE_XML |
710 | { | |
711 | extern const char *const xml_builtin[][2]; | |
712 | int i; | |
713 | ||
714 | /* Look for the annex. */ | |
715 | for (i = 0; xml_builtin[i][0] != NULL; i++) | |
716 | if (strcmp (annex, xml_builtin[i][0]) == 0) | |
717 | break; | |
718 | ||
719 | if (xml_builtin[i][0] != NULL) | |
720 | return xml_builtin[i][1]; | |
721 | } | |
722 | #endif | |
723 | ||
724 | return NULL; | |
23181151 DJ |
725 | } |
726 | ||
c74d0ad8 DJ |
727 | void |
728 | monitor_show_help (void) | |
729 | { | |
730 | monitor_output ("The following monitor commands are supported:\n"); | |
731 | monitor_output (" set debug <0|1>\n"); | |
1b3f6016 | 732 | monitor_output (" Enable general debugging messages\n"); |
aa5ca48f DE |
733 | monitor_output (" set debug-hw-points <0|1>\n"); |
734 | monitor_output (" Enable h/w breakpoint/watchpoint debugging messages\n"); | |
c74d0ad8 DJ |
735 | monitor_output (" set remote-debug <0|1>\n"); |
736 | monitor_output (" Enable remote protocol debugging messages\n"); | |
87ce2a04 DE |
737 | monitor_output (" set debug-format option1[,option2,...]\n"); |
738 | monitor_output (" Add additional information to debugging messages\n"); | |
739 | monitor_output (" Options: all, none"); | |
87ce2a04 | 740 | monitor_output (", timestamp"); |
87ce2a04 | 741 | monitor_output ("\n"); |
ecd7ecbc DJ |
742 | monitor_output (" exit\n"); |
743 | monitor_output (" Quit GDBserver\n"); | |
c74d0ad8 DJ |
744 | } |
745 | ||
764880b7 PA |
746 | /* Read trace frame or inferior memory. Returns the number of bytes |
747 | actually read, zero when no further transfer is possible, and -1 on | |
748 | error. Return of a positive value smaller than LEN does not | |
749 | indicate there's no more to be read, only the end of the transfer. | |
750 | E.g., when GDB reads memory from a traceframe, a first request may | |
751 | be served from a memory block that does not cover the whole request | |
752 | length. A following request gets the rest served from either | |
753 | another block (of the same traceframe) or from the read-only | |
754 | regions. */ | |
219f2f23 PA |
755 | |
756 | static int | |
90d74c30 | 757 | gdb_read_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) |
219f2f23 | 758 | { |
764880b7 | 759 | int res; |
90d74c30 | 760 | |
219f2f23 PA |
761 | if (current_traceframe >= 0) |
762 | { | |
763 | ULONGEST nbytes; | |
764 | ULONGEST length = len; | |
765 | ||
766 | if (traceframe_read_mem (current_traceframe, | |
767 | memaddr, myaddr, len, &nbytes)) | |
9a13b2fa | 768 | return -1; |
219f2f23 | 769 | /* Data read from trace buffer, we're done. */ |
764880b7 PA |
770 | if (nbytes > 0) |
771 | return nbytes; | |
219f2f23 | 772 | if (!in_readonly_region (memaddr, length)) |
764880b7 | 773 | return -1; |
219f2f23 PA |
774 | /* Otherwise we have a valid readonly case, fall through. */ |
775 | /* (assume no half-trace half-real blocks for now) */ | |
776 | } | |
777 | ||
764880b7 PA |
778 | res = prepare_to_access_memory (); |
779 | if (res == 0) | |
90d74c30 | 780 | { |
764880b7 | 781 | res = read_inferior_memory (memaddr, myaddr, len); |
0146f85b | 782 | done_accessing_memory (); |
90d74c30 | 783 | |
764880b7 PA |
784 | return res == 0 ? len : -1; |
785 | } | |
786 | else | |
787 | return -1; | |
219f2f23 PA |
788 | } |
789 | ||
790 | /* Write trace frame or inferior memory. Actually, writing to trace | |
791 | frames is forbidden. */ | |
792 | ||
793 | static int | |
90d74c30 | 794 | gdb_write_memory (CORE_ADDR memaddr, const unsigned char *myaddr, int len) |
219f2f23 PA |
795 | { |
796 | if (current_traceframe >= 0) | |
797 | return EIO; | |
798 | else | |
90d74c30 PA |
799 | { |
800 | int ret; | |
801 | ||
802 | ret = prepare_to_access_memory (); | |
803 | if (ret == 0) | |
804 | { | |
805 | ret = write_inferior_memory (memaddr, myaddr, len); | |
0146f85b | 806 | done_accessing_memory (); |
90d74c30 PA |
807 | } |
808 | return ret; | |
809 | } | |
219f2f23 PA |
810 | } |
811 | ||
08388c79 DE |
812 | /* Subroutine of handle_search_memory to simplify it. */ |
813 | ||
814 | static int | |
815 | handle_search_memory_1 (CORE_ADDR start_addr, CORE_ADDR search_space_len, | |
816 | gdb_byte *pattern, unsigned pattern_len, | |
817 | gdb_byte *search_buf, | |
818 | unsigned chunk_size, unsigned search_buf_size, | |
819 | CORE_ADDR *found_addrp) | |
820 | { | |
821 | /* Prime the search buffer. */ | |
822 | ||
764880b7 PA |
823 | if (gdb_read_memory (start_addr, search_buf, search_buf_size) |
824 | != search_buf_size) | |
08388c79 | 825 | { |
b3dc46ff AB |
826 | warning ("Unable to access %ld bytes of target " |
827 | "memory at 0x%lx, halting search.", | |
828 | (long) search_buf_size, (long) start_addr); | |
08388c79 DE |
829 | return -1; |
830 | } | |
831 | ||
832 | /* Perform the search. | |
833 | ||
834 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
835 | When we've scanned N bytes we copy the trailing bytes to the start and | |
836 | read in another N bytes. */ | |
837 | ||
838 | while (search_space_len >= pattern_len) | |
839 | { | |
840 | gdb_byte *found_ptr; | |
841 | unsigned nr_search_bytes = (search_space_len < search_buf_size | |
842 | ? search_space_len | |
843 | : search_buf_size); | |
844 | ||
845 | found_ptr = memmem (search_buf, nr_search_bytes, pattern, pattern_len); | |
846 | ||
847 | if (found_ptr != NULL) | |
848 | { | |
849 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
850 | *found_addrp = found_addr; | |
851 | return 1; | |
852 | } | |
853 | ||
854 | /* Not found in this chunk, skip to next chunk. */ | |
855 | ||
856 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
857 | if (search_space_len >= chunk_size) | |
858 | search_space_len -= chunk_size; | |
859 | else | |
860 | search_space_len = 0; | |
861 | ||
862 | if (search_space_len >= pattern_len) | |
863 | { | |
864 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 865 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
866 | int nr_to_read; |
867 | ||
868 | /* Copy the trailing part of the previous iteration to the front | |
869 | of the buffer for the next iteration. */ | |
870 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
871 | ||
872 | nr_to_read = (search_space_len - keep_len < chunk_size | |
873 | ? search_space_len - keep_len | |
874 | : chunk_size); | |
875 | ||
90d74c30 | 876 | if (gdb_read_memory (read_addr, search_buf + keep_len, |
764880b7 | 877 | nr_to_read) != search_buf_size) |
08388c79 | 878 | { |
b3dc46ff | 879 | warning ("Unable to access %ld bytes of target memory " |
493e2a69 | 880 | "at 0x%lx, halting search.", |
b3dc46ff | 881 | (long) nr_to_read, (long) read_addr); |
08388c79 DE |
882 | return -1; |
883 | } | |
884 | ||
885 | start_addr += chunk_size; | |
886 | } | |
887 | } | |
888 | ||
889 | /* Not found. */ | |
890 | ||
891 | return 0; | |
892 | } | |
893 | ||
894 | /* Handle qSearch:memory packets. */ | |
895 | ||
896 | static void | |
897 | handle_search_memory (char *own_buf, int packet_len) | |
898 | { | |
899 | CORE_ADDR start_addr; | |
900 | CORE_ADDR search_space_len; | |
901 | gdb_byte *pattern; | |
902 | unsigned int pattern_len; | |
903 | /* NOTE: also defined in find.c testcase. */ | |
904 | #define SEARCH_CHUNK_SIZE 16000 | |
905 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
906 | /* Buffer to hold memory contents for searching. */ | |
907 | gdb_byte *search_buf; | |
908 | unsigned search_buf_size; | |
909 | int found; | |
910 | CORE_ADDR found_addr; | |
911 | int cmd_name_len = sizeof ("qSearch:memory:") - 1; | |
912 | ||
aef93bd7 | 913 | pattern = malloc (packet_len); |
08388c79 DE |
914 | if (pattern == NULL) |
915 | { | |
5e1471f5 | 916 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
917 | strcpy (own_buf, "E00"); |
918 | return; | |
919 | } | |
920 | if (decode_search_memory_packet (own_buf + cmd_name_len, | |
921 | packet_len - cmd_name_len, | |
922 | &start_addr, &search_space_len, | |
923 | pattern, &pattern_len) < 0) | |
924 | { | |
925 | free (pattern); | |
5e1471f5 | 926 | error ("Error in parsing qSearch:memory packet"); |
08388c79 DE |
927 | strcpy (own_buf, "E00"); |
928 | return; | |
929 | } | |
930 | ||
931 | search_buf_size = chunk_size + pattern_len - 1; | |
932 | ||
933 | /* No point in trying to allocate a buffer larger than the search space. */ | |
934 | if (search_space_len < search_buf_size) | |
935 | search_buf_size = search_space_len; | |
936 | ||
aef93bd7 | 937 | search_buf = malloc (search_buf_size); |
08388c79 DE |
938 | if (search_buf == NULL) |
939 | { | |
940 | free (pattern); | |
5e1471f5 | 941 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
942 | strcpy (own_buf, "E00"); |
943 | return; | |
944 | } | |
945 | ||
946 | found = handle_search_memory_1 (start_addr, search_space_len, | |
947 | pattern, pattern_len, | |
948 | search_buf, chunk_size, search_buf_size, | |
949 | &found_addr); | |
950 | ||
951 | if (found > 0) | |
952 | sprintf (own_buf, "1,%lx", (long) found_addr); | |
953 | else if (found == 0) | |
954 | strcpy (own_buf, "0"); | |
955 | else | |
956 | strcpy (own_buf, "E00"); | |
957 | ||
958 | free (search_buf); | |
959 | free (pattern); | |
960 | } | |
961 | ||
2d717e4f DJ |
962 | #define require_running(BUF) \ |
963 | if (!target_running ()) \ | |
964 | { \ | |
965 | write_enn (BUF); \ | |
966 | return; \ | |
967 | } | |
968 | ||
87ce2a04 DE |
969 | /* Parse options to --debug-format= and "monitor set debug-format". |
970 | ARG is the text after "--debug-format=" or "monitor set debug-format". | |
971 | IS_MONITOR is non-zero if we're invoked via "monitor set debug-format". | |
972 | This triggers calls to monitor_output. | |
973 | The result is NULL if all options were parsed ok, otherwise an error | |
974 | message which the caller must free. | |
975 | ||
976 | N.B. These commands affect all debug format settings, they are not | |
977 | cumulative. If a format is not specified, it is turned off. | |
978 | However, we don't go to extra trouble with things like | |
979 | "monitor set debug-format all,none,timestamp". | |
980 | Instead we just parse them one at a time, in order. | |
981 | ||
982 | The syntax for "monitor set debug" we support here is not identical | |
983 | to gdb's "set debug foo on|off" because we also use this function to | |
984 | parse "--debug-format=foo,bar". */ | |
985 | ||
986 | static char * | |
987 | parse_debug_format_options (const char *arg, int is_monitor) | |
988 | { | |
989 | VEC (char_ptr) *options; | |
990 | int ix; | |
991 | char *option; | |
992 | ||
993 | /* First turn all debug format options off. */ | |
994 | debug_timestamp = 0; | |
995 | ||
996 | /* First remove leading spaces, for "monitor set debug-format". */ | |
997 | while (isspace (*arg)) | |
998 | ++arg; | |
999 | ||
1000 | options = delim_string_to_char_ptr_vec (arg, ','); | |
1001 | ||
1002 | for (ix = 0; VEC_iterate (char_ptr, options, ix, option); ++ix) | |
1003 | { | |
1004 | if (strcmp (option, "all") == 0) | |
1005 | { | |
1006 | debug_timestamp = 1; | |
1007 | if (is_monitor) | |
1008 | monitor_output ("All extra debug format options enabled.\n"); | |
1009 | } | |
1010 | else if (strcmp (option, "none") == 0) | |
1011 | { | |
1012 | debug_timestamp = 0; | |
1013 | if (is_monitor) | |
1014 | monitor_output ("All extra debug format options disabled.\n"); | |
1015 | } | |
87ce2a04 DE |
1016 | else if (strcmp (option, "timestamp") == 0) |
1017 | { | |
1018 | debug_timestamp = 1; | |
1019 | if (is_monitor) | |
1020 | monitor_output ("Timestamps will be added to debug output.\n"); | |
1021 | } | |
87ce2a04 DE |
1022 | else if (*option == '\0') |
1023 | { | |
1024 | /* An empty option, e.g., "--debug-format=foo,,bar", is ignored. */ | |
1025 | continue; | |
1026 | } | |
1027 | else | |
1028 | { | |
1029 | char *msg = xstrprintf ("Unknown debug-format argument: \"%s\"\n", | |
1030 | option); | |
1031 | ||
1032 | free_char_ptr_vec (options); | |
1033 | return msg; | |
1034 | } | |
1035 | } | |
1036 | ||
1037 | free_char_ptr_vec (options); | |
1038 | return NULL; | |
1039 | } | |
1040 | ||
cdbfd419 PP |
1041 | /* Handle monitor commands not handled by target-specific handlers. */ |
1042 | ||
1043 | static void | |
d73f2619 | 1044 | handle_monitor_command (char *mon, char *own_buf) |
cdbfd419 PP |
1045 | { |
1046 | if (strcmp (mon, "set debug 1") == 0) | |
1047 | { | |
1048 | debug_threads = 1; | |
1049 | monitor_output ("Debug output enabled.\n"); | |
1050 | } | |
1051 | else if (strcmp (mon, "set debug 0") == 0) | |
1052 | { | |
1053 | debug_threads = 0; | |
1054 | monitor_output ("Debug output disabled.\n"); | |
1055 | } | |
1056 | else if (strcmp (mon, "set debug-hw-points 1") == 0) | |
1057 | { | |
c5e92cca | 1058 | show_debug_regs = 1; |
cdbfd419 PP |
1059 | monitor_output ("H/W point debugging output enabled.\n"); |
1060 | } | |
1061 | else if (strcmp (mon, "set debug-hw-points 0") == 0) | |
1062 | { | |
c5e92cca | 1063 | show_debug_regs = 0; |
cdbfd419 PP |
1064 | monitor_output ("H/W point debugging output disabled.\n"); |
1065 | } | |
1066 | else if (strcmp (mon, "set remote-debug 1") == 0) | |
1067 | { | |
1068 | remote_debug = 1; | |
1069 | monitor_output ("Protocol debug output enabled.\n"); | |
1070 | } | |
1071 | else if (strcmp (mon, "set remote-debug 0") == 0) | |
1072 | { | |
1073 | remote_debug = 0; | |
1074 | monitor_output ("Protocol debug output disabled.\n"); | |
1075 | } | |
61012eef | 1076 | else if (startswith (mon, "set debug-format ")) |
87ce2a04 DE |
1077 | { |
1078 | char *error_msg | |
1079 | = parse_debug_format_options (mon + sizeof ("set debug-format ") - 1, | |
1080 | 1); | |
1081 | ||
1082 | if (error_msg != NULL) | |
1083 | { | |
1084 | monitor_output (error_msg); | |
1085 | monitor_show_help (); | |
1086 | write_enn (own_buf); | |
1087 | xfree (error_msg); | |
1088 | } | |
1089 | } | |
cdbfd419 PP |
1090 | else if (strcmp (mon, "help") == 0) |
1091 | monitor_show_help (); | |
1092 | else if (strcmp (mon, "exit") == 0) | |
1093 | exit_requested = 1; | |
1094 | else | |
1095 | { | |
1096 | monitor_output ("Unknown monitor command.\n\n"); | |
1097 | monitor_show_help (); | |
1098 | write_enn (own_buf); | |
1099 | } | |
1100 | } | |
1101 | ||
d08aafef PA |
1102 | /* Associates a callback with each supported qXfer'able object. */ |
1103 | ||
1104 | struct qxfer | |
1105 | { | |
1106 | /* The object this handler handles. */ | |
1107 | const char *object; | |
1108 | ||
1109 | /* Request that the target transfer up to LEN 8-bit bytes of the | |
1110 | target's OBJECT. The OFFSET, for a seekable object, specifies | |
1111 | the starting point. The ANNEX can be used to provide additional | |
1112 | data-specific information to the target. | |
1113 | ||
1114 | Return the number of bytes actually transfered, zero when no | |
5cc22e4c MM |
1115 | further transfer is possible, -1 on error, -2 when the transfer |
1116 | is not supported, and -3 on a verbose error message that should | |
1117 | be preserved. Return of a positive value smaller than LEN does | |
1118 | not indicate the end of the object, only the end of the transfer. | |
d08aafef PA |
1119 | |
1120 | One, and only one, of readbuf or writebuf must be non-NULL. */ | |
1121 | int (*xfer) (const char *annex, | |
1122 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1123 | ULONGEST offset, LONGEST len); | |
1124 | }; | |
1125 | ||
1126 | /* Handle qXfer:auxv:read. */ | |
1127 | ||
1128 | static int | |
1129 | handle_qxfer_auxv (const char *annex, | |
1130 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1131 | ULONGEST offset, LONGEST len) | |
1132 | { | |
1133 | if (the_target->read_auxv == NULL || writebuf != NULL) | |
1134 | return -2; | |
1135 | ||
1136 | if (annex[0] != '\0' || !target_running ()) | |
1137 | return -1; | |
1138 | ||
1139 | return (*the_target->read_auxv) (offset, readbuf, len); | |
1140 | } | |
1141 | ||
e57f1de3 GB |
1142 | /* Handle qXfer:exec-file:read. */ |
1143 | ||
1144 | static int | |
1145 | handle_qxfer_exec_file (const char *const_annex, | |
1146 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1147 | ULONGEST offset, LONGEST len) | |
1148 | { | |
1149 | char *annex, *file; | |
1150 | ULONGEST pid; | |
1151 | int total_len; | |
1152 | ||
1153 | if (the_target->pid_to_exec_file == NULL || writebuf != NULL) | |
1154 | return -2; | |
1155 | ||
1156 | annex = alloca (strlen (const_annex) + 1); | |
1157 | strcpy (annex, const_annex); | |
1158 | annex = unpack_varlen_hex (annex, &pid); | |
1159 | if (annex[0] != '\0' || pid == 0) | |
1160 | return -1; | |
1161 | ||
1162 | file = (*the_target->pid_to_exec_file) (pid); | |
1163 | if (file == NULL) | |
1164 | return -1; | |
1165 | ||
1166 | total_len = strlen (file); | |
1167 | ||
1168 | if (offset > total_len) | |
1169 | return -1; | |
1170 | ||
1171 | if (offset + len > total_len) | |
1172 | len = total_len - offset; | |
1173 | ||
1174 | memcpy (readbuf, file + offset, len); | |
1175 | return len; | |
1176 | } | |
1177 | ||
d08aafef PA |
1178 | /* Handle qXfer:features:read. */ |
1179 | ||
1180 | static int | |
1181 | handle_qxfer_features (const char *annex, | |
1182 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1183 | ULONGEST offset, LONGEST len) | |
1184 | { | |
1185 | const char *document; | |
1186 | size_t total_len; | |
1187 | ||
1188 | if (writebuf != NULL) | |
1189 | return -2; | |
1190 | ||
1191 | if (!target_running ()) | |
1192 | return -1; | |
1193 | ||
1194 | /* Grab the correct annex. */ | |
1195 | document = get_features_xml (annex); | |
1196 | if (document == NULL) | |
1197 | return -1; | |
1198 | ||
1199 | total_len = strlen (document); | |
1200 | ||
1201 | if (offset > total_len) | |
1202 | return -1; | |
1203 | ||
1204 | if (offset + len > total_len) | |
1205 | len = total_len - offset; | |
1206 | ||
1207 | memcpy (readbuf, document + offset, len); | |
1208 | return len; | |
1209 | } | |
1210 | ||
649ebbca DE |
1211 | /* Worker routine for handle_qxfer_libraries. |
1212 | Add to the length pointed to by ARG a conservative estimate of the | |
1213 | length needed to transmit the file name of INF. */ | |
1214 | ||
1215 | static void | |
1216 | accumulate_file_name_length (struct inferior_list_entry *inf, void *arg) | |
1217 | { | |
1218 | struct dll_info *dll = (struct dll_info *) inf; | |
1219 | unsigned int *total_len = arg; | |
1220 | ||
1221 | /* Over-estimate the necessary memory. Assume that every character | |
1222 | in the library name must be escaped. */ | |
1223 | *total_len += 128 + 6 * strlen (dll->name); | |
1224 | } | |
1225 | ||
1226 | /* Worker routine for handle_qxfer_libraries. | |
1227 | Emit the XML to describe the library in INF. */ | |
1228 | ||
1229 | static void | |
1230 | emit_dll_description (struct inferior_list_entry *inf, void *arg) | |
1231 | { | |
1232 | struct dll_info *dll = (struct dll_info *) inf; | |
1233 | char **p_ptr = arg; | |
1234 | char *p = *p_ptr; | |
1235 | char *name; | |
1236 | ||
1237 | strcpy (p, " <library name=\""); | |
1238 | p = p + strlen (p); | |
1239 | name = xml_escape_text (dll->name); | |
1240 | strcpy (p, name); | |
1241 | free (name); | |
1242 | p = p + strlen (p); | |
1243 | strcpy (p, "\"><segment address=\""); | |
1244 | p = p + strlen (p); | |
1245 | sprintf (p, "0x%lx", (long) dll->base_addr); | |
1246 | p = p + strlen (p); | |
1247 | strcpy (p, "\"/></library>\n"); | |
1248 | p = p + strlen (p); | |
1249 | ||
1250 | *p_ptr = p; | |
1251 | } | |
1252 | ||
d08aafef PA |
1253 | /* Handle qXfer:libraries:read. */ |
1254 | ||
1255 | static int | |
1256 | handle_qxfer_libraries (const char *annex, | |
1257 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1258 | ULONGEST offset, LONGEST len) | |
1259 | { | |
1260 | unsigned int total_len; | |
1261 | char *document, *p; | |
d08aafef PA |
1262 | |
1263 | if (writebuf != NULL) | |
1264 | return -2; | |
1265 | ||
1266 | if (annex[0] != '\0' || !target_running ()) | |
1267 | return -1; | |
1268 | ||
d08aafef | 1269 | total_len = 64; |
649ebbca DE |
1270 | for_each_inferior_with_data (&all_dlls, accumulate_file_name_length, |
1271 | &total_len); | |
d08aafef PA |
1272 | |
1273 | document = malloc (total_len); | |
1274 | if (document == NULL) | |
1275 | return -1; | |
1276 | ||
1277 | strcpy (document, "<library-list>\n"); | |
1278 | p = document + strlen (document); | |
1279 | ||
649ebbca | 1280 | for_each_inferior_with_data (&all_dlls, emit_dll_description, &p); |
d08aafef PA |
1281 | |
1282 | strcpy (p, "</library-list>\n"); | |
1283 | ||
1284 | total_len = strlen (document); | |
1285 | ||
1286 | if (offset > total_len) | |
1287 | { | |
1288 | free (document); | |
1289 | return -1; | |
1290 | } | |
1291 | ||
1292 | if (offset + len > total_len) | |
1293 | len = total_len - offset; | |
1294 | ||
1295 | memcpy (readbuf, document + offset, len); | |
1296 | free (document); | |
1297 | return len; | |
1298 | } | |
1299 | ||
2268b414 JK |
1300 | /* Handle qXfer:libraries-svr4:read. */ |
1301 | ||
1302 | static int | |
1303 | handle_qxfer_libraries_svr4 (const char *annex, | |
1304 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1305 | ULONGEST offset, LONGEST len) | |
1306 | { | |
1307 | if (writebuf != NULL) | |
1308 | return -2; | |
1309 | ||
b1fbec62 | 1310 | if (!target_running () || the_target->qxfer_libraries_svr4 == NULL) |
2268b414 JK |
1311 | return -1; |
1312 | ||
1313 | return the_target->qxfer_libraries_svr4 (annex, readbuf, writebuf, offset, len); | |
1314 | } | |
1315 | ||
d08aafef PA |
1316 | /* Handle qXfer:osadata:read. */ |
1317 | ||
1318 | static int | |
1319 | handle_qxfer_osdata (const char *annex, | |
1320 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1321 | ULONGEST offset, LONGEST len) | |
1322 | { | |
1323 | if (the_target->qxfer_osdata == NULL || writebuf != NULL) | |
1324 | return -2; | |
1325 | ||
1326 | return (*the_target->qxfer_osdata) (annex, readbuf, NULL, offset, len); | |
1327 | } | |
1328 | ||
1329 | /* Handle qXfer:siginfo:read and qXfer:siginfo:write. */ | |
1330 | ||
1331 | static int | |
1332 | handle_qxfer_siginfo (const char *annex, | |
1333 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1334 | ULONGEST offset, LONGEST len) | |
1335 | { | |
1336 | if (the_target->qxfer_siginfo == NULL) | |
1337 | return -2; | |
1338 | ||
1339 | if (annex[0] != '\0' || !target_running ()) | |
1340 | return -1; | |
1341 | ||
1342 | return (*the_target->qxfer_siginfo) (annex, readbuf, writebuf, offset, len); | |
1343 | } | |
1344 | ||
1345 | /* Handle qXfer:spu:read and qXfer:spu:write. */ | |
1346 | ||
1347 | static int | |
1348 | handle_qxfer_spu (const char *annex, | |
1349 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1350 | ULONGEST offset, LONGEST len) | |
1351 | { | |
1352 | if (the_target->qxfer_spu == NULL) | |
1353 | return -2; | |
1354 | ||
1355 | if (!target_running ()) | |
1356 | return -1; | |
1357 | ||
1358 | return (*the_target->qxfer_spu) (annex, readbuf, writebuf, offset, len); | |
1359 | } | |
1360 | ||
1361 | /* Handle qXfer:statictrace:read. */ | |
1362 | ||
1363 | static int | |
1364 | handle_qxfer_statictrace (const char *annex, | |
1365 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1366 | ULONGEST offset, LONGEST len) | |
1367 | { | |
1368 | ULONGEST nbytes; | |
1369 | ||
1370 | if (writebuf != NULL) | |
1371 | return -2; | |
1372 | ||
1373 | if (annex[0] != '\0' || !target_running () || current_traceframe == -1) | |
1374 | return -1; | |
1375 | ||
1376 | if (traceframe_read_sdata (current_traceframe, offset, | |
1377 | readbuf, len, &nbytes)) | |
1378 | return -1; | |
1379 | return nbytes; | |
1380 | } | |
1381 | ||
649ebbca DE |
1382 | /* Helper for handle_qxfer_threads_proper. |
1383 | Emit the XML to describe the thread of INF. */ | |
d08aafef | 1384 | |
dc146f7c | 1385 | static void |
649ebbca | 1386 | handle_qxfer_threads_worker (struct inferior_list_entry *inf, void *arg) |
dc146f7c | 1387 | { |
649ebbca DE |
1388 | struct thread_info *thread = (struct thread_info *) inf; |
1389 | struct buffer *buffer = arg; | |
1390 | ptid_t ptid = thread_to_gdb_id (thread); | |
1391 | char ptid_s[100]; | |
1392 | int core = target_core_of_thread (ptid); | |
1393 | char core_s[21]; | |
dc146f7c | 1394 | |
649ebbca | 1395 | write_ptid (ptid_s, ptid); |
dc146f7c | 1396 | |
649ebbca | 1397 | if (core != -1) |
dc146f7c | 1398 | { |
649ebbca DE |
1399 | sprintf (core_s, "%d", core); |
1400 | buffer_xml_printf (buffer, "<thread id=\"%s\" core=\"%s\"/>\n", | |
1401 | ptid_s, core_s); | |
1402 | } | |
1403 | else | |
1404 | { | |
1405 | buffer_xml_printf (buffer, "<thread id=\"%s\"/>\n", | |
1406 | ptid_s); | |
1407 | } | |
1408 | } | |
dc146f7c | 1409 | |
649ebbca | 1410 | /* Helper for handle_qxfer_threads. */ |
dc146f7c | 1411 | |
649ebbca DE |
1412 | static void |
1413 | handle_qxfer_threads_proper (struct buffer *buffer) | |
1414 | { | |
1415 | buffer_grow_str (buffer, "<threads>\n"); | |
1416 | ||
1417 | for_each_inferior_with_data (&all_threads, handle_qxfer_threads_worker, | |
1418 | buffer); | |
dc146f7c VP |
1419 | |
1420 | buffer_grow_str0 (buffer, "</threads>\n"); | |
1421 | } | |
1422 | ||
d08aafef PA |
1423 | /* Handle qXfer:threads:read. */ |
1424 | ||
dc146f7c | 1425 | static int |
d08aafef PA |
1426 | handle_qxfer_threads (const char *annex, |
1427 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1428 | ULONGEST offset, LONGEST len) | |
dc146f7c VP |
1429 | { |
1430 | static char *result = 0; | |
1431 | static unsigned int result_length = 0; | |
1432 | ||
d08aafef PA |
1433 | if (writebuf != NULL) |
1434 | return -2; | |
1435 | ||
1436 | if (!target_running () || annex[0] != '\0') | |
1437 | return -1; | |
dc146f7c VP |
1438 | |
1439 | if (offset == 0) | |
1440 | { | |
1441 | struct buffer buffer; | |
1442 | /* When asked for data at offset 0, generate everything and store into | |
1443 | 'result'. Successive reads will be served off 'result'. */ | |
1444 | if (result) | |
1445 | free (result); | |
1446 | ||
1447 | buffer_init (&buffer); | |
1448 | ||
d08aafef | 1449 | handle_qxfer_threads_proper (&buffer); |
dc146f7c VP |
1450 | |
1451 | result = buffer_finish (&buffer); | |
1452 | result_length = strlen (result); | |
1453 | buffer_free (&buffer); | |
1454 | } | |
1455 | ||
1456 | if (offset >= result_length) | |
1457 | { | |
1458 | /* We're out of data. */ | |
1459 | free (result); | |
1460 | result = NULL; | |
1461 | result_length = 0; | |
1462 | return 0; | |
1463 | } | |
1464 | ||
d08aafef PA |
1465 | if (len > result_length - offset) |
1466 | len = result_length - offset; | |
1467 | ||
1468 | memcpy (readbuf, result + offset, len); | |
1469 | ||
1470 | return len; | |
1471 | } | |
1472 | ||
b3b9301e PA |
1473 | /* Handle qXfer:traceframe-info:read. */ |
1474 | ||
1475 | static int | |
1476 | handle_qxfer_traceframe_info (const char *annex, | |
1477 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1478 | ULONGEST offset, LONGEST len) | |
1479 | { | |
1480 | static char *result = 0; | |
1481 | static unsigned int result_length = 0; | |
1482 | ||
1483 | if (writebuf != NULL) | |
1484 | return -2; | |
1485 | ||
1486 | if (!target_running () || annex[0] != '\0' || current_traceframe == -1) | |
1487 | return -1; | |
1488 | ||
1489 | if (offset == 0) | |
1490 | { | |
1491 | struct buffer buffer; | |
1492 | ||
1493 | /* When asked for data at offset 0, generate everything and | |
1494 | store into 'result'. Successive reads will be served off | |
1495 | 'result'. */ | |
1496 | free (result); | |
1497 | ||
1498 | buffer_init (&buffer); | |
1499 | ||
1500 | traceframe_read_info (current_traceframe, &buffer); | |
1501 | ||
1502 | result = buffer_finish (&buffer); | |
1503 | result_length = strlen (result); | |
1504 | buffer_free (&buffer); | |
1505 | } | |
1506 | ||
1507 | if (offset >= result_length) | |
1508 | { | |
1509 | /* We're out of data. */ | |
1510 | free (result); | |
1511 | result = NULL; | |
1512 | result_length = 0; | |
1513 | return 0; | |
1514 | } | |
1515 | ||
1516 | if (len > result_length - offset) | |
1517 | len = result_length - offset; | |
1518 | ||
1519 | memcpy (readbuf, result + offset, len); | |
1520 | return len; | |
1521 | } | |
1522 | ||
78d85199 YQ |
1523 | /* Handle qXfer:fdpic:read. */ |
1524 | ||
1525 | static int | |
1526 | handle_qxfer_fdpic (const char *annex, gdb_byte *readbuf, | |
1527 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1528 | { | |
1529 | if (the_target->read_loadmap == NULL) | |
1530 | return -2; | |
1531 | ||
1532 | if (!target_running ()) | |
1533 | return -1; | |
1534 | ||
1535 | return (*the_target->read_loadmap) (annex, offset, readbuf, len); | |
1536 | } | |
1537 | ||
9accd112 MM |
1538 | /* Handle qXfer:btrace:read. */ |
1539 | ||
1540 | static int | |
1541 | handle_qxfer_btrace (const char *annex, | |
1542 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1543 | ULONGEST offset, LONGEST len) | |
1544 | { | |
1545 | static struct buffer cache; | |
1546 | struct thread_info *thread; | |
969c39fb | 1547 | int type, result; |
9accd112 MM |
1548 | |
1549 | if (the_target->read_btrace == NULL || writebuf != NULL) | |
1550 | return -2; | |
1551 | ||
1552 | if (!target_running ()) | |
1553 | return -1; | |
1554 | ||
1555 | if (ptid_equal (general_thread, null_ptid) | |
1556 | || ptid_equal (general_thread, minus_one_ptid)) | |
1557 | { | |
1558 | strcpy (own_buf, "E.Must select a single thread."); | |
1559 | return -3; | |
1560 | } | |
1561 | ||
1562 | thread = find_thread_ptid (general_thread); | |
1563 | if (thread == NULL) | |
1564 | { | |
1565 | strcpy (own_buf, "E.No such thread."); | |
1566 | return -3; | |
1567 | } | |
1568 | ||
1569 | if (thread->btrace == NULL) | |
1570 | { | |
1571 | strcpy (own_buf, "E.Btrace not enabled."); | |
1572 | return -3; | |
1573 | } | |
1574 | ||
1575 | if (strcmp (annex, "all") == 0) | |
864089d2 | 1576 | type = BTRACE_READ_ALL; |
9accd112 | 1577 | else if (strcmp (annex, "new") == 0) |
864089d2 | 1578 | type = BTRACE_READ_NEW; |
969c39fb MM |
1579 | else if (strcmp (annex, "delta") == 0) |
1580 | type = BTRACE_READ_DELTA; | |
9accd112 MM |
1581 | else |
1582 | { | |
1583 | strcpy (own_buf, "E.Bad annex."); | |
1584 | return -3; | |
1585 | } | |
1586 | ||
1587 | if (offset == 0) | |
1588 | { | |
1589 | buffer_free (&cache); | |
1590 | ||
969c39fb MM |
1591 | result = target_read_btrace (thread->btrace, &cache, type); |
1592 | if (result != 0) | |
1593 | { | |
1594 | memcpy (own_buf, cache.buffer, cache.used_size); | |
1595 | return -3; | |
1596 | } | |
9accd112 MM |
1597 | } |
1598 | else if (offset > cache.used_size) | |
1599 | { | |
1600 | buffer_free (&cache); | |
1601 | return -3; | |
1602 | } | |
1603 | ||
1604 | if (len > cache.used_size - offset) | |
1605 | len = cache.used_size - offset; | |
1606 | ||
1607 | memcpy (readbuf, cache.buffer + offset, len); | |
1608 | ||
1609 | return len; | |
1610 | } | |
1611 | ||
f4abbc16 MM |
1612 | /* Handle qXfer:btrace-conf:read. */ |
1613 | ||
1614 | static int | |
1615 | handle_qxfer_btrace_conf (const char *annex, | |
1616 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1617 | ULONGEST offset, LONGEST len) | |
1618 | { | |
1619 | static struct buffer cache; | |
1620 | struct thread_info *thread; | |
1621 | int result; | |
1622 | ||
1623 | if (the_target->read_btrace_conf == NULL || writebuf != NULL) | |
1624 | return -2; | |
1625 | ||
1626 | if (annex[0] != '\0' || !target_running ()) | |
1627 | return -1; | |
1628 | ||
1629 | if (ptid_equal (general_thread, null_ptid) | |
1630 | || ptid_equal (general_thread, minus_one_ptid)) | |
1631 | { | |
1632 | strcpy (own_buf, "E.Must select a single thread."); | |
1633 | return -3; | |
1634 | } | |
1635 | ||
1636 | thread = find_thread_ptid (general_thread); | |
1637 | if (thread == NULL) | |
1638 | { | |
1639 | strcpy (own_buf, "E.No such thread."); | |
1640 | return -3; | |
1641 | } | |
1642 | ||
1643 | if (thread->btrace == NULL) | |
1644 | { | |
1645 | strcpy (own_buf, "E.Btrace not enabled."); | |
1646 | return -3; | |
1647 | } | |
1648 | ||
1649 | if (offset == 0) | |
1650 | { | |
1651 | buffer_free (&cache); | |
1652 | ||
1653 | result = target_read_btrace_conf (thread->btrace, &cache); | |
1654 | if (result != 0) | |
1655 | { | |
1656 | memcpy (own_buf, cache.buffer, cache.used_size); | |
1657 | return -3; | |
1658 | } | |
1659 | } | |
1660 | else if (offset > cache.used_size) | |
1661 | { | |
1662 | buffer_free (&cache); | |
1663 | return -3; | |
1664 | } | |
1665 | ||
1666 | if (len > cache.used_size - offset) | |
1667 | len = cache.used_size - offset; | |
1668 | ||
1669 | memcpy (readbuf, cache.buffer + offset, len); | |
1670 | ||
1671 | return len; | |
1672 | } | |
1673 | ||
d08aafef PA |
1674 | static const struct qxfer qxfer_packets[] = |
1675 | { | |
1676 | { "auxv", handle_qxfer_auxv }, | |
9accd112 | 1677 | { "btrace", handle_qxfer_btrace }, |
f4abbc16 | 1678 | { "btrace-conf", handle_qxfer_btrace_conf }, |
e57f1de3 | 1679 | { "exec-file", handle_qxfer_exec_file}, |
78d85199 | 1680 | { "fdpic", handle_qxfer_fdpic}, |
d08aafef PA |
1681 | { "features", handle_qxfer_features }, |
1682 | { "libraries", handle_qxfer_libraries }, | |
2268b414 | 1683 | { "libraries-svr4", handle_qxfer_libraries_svr4 }, |
d08aafef PA |
1684 | { "osdata", handle_qxfer_osdata }, |
1685 | { "siginfo", handle_qxfer_siginfo }, | |
1686 | { "spu", handle_qxfer_spu }, | |
1687 | { "statictrace", handle_qxfer_statictrace }, | |
1688 | { "threads", handle_qxfer_threads }, | |
b3b9301e | 1689 | { "traceframe-info", handle_qxfer_traceframe_info }, |
d08aafef PA |
1690 | }; |
1691 | ||
1692 | static int | |
1693 | handle_qxfer (char *own_buf, int packet_len, int *new_packet_len_p) | |
1694 | { | |
1695 | int i; | |
1696 | char *object; | |
1697 | char *rw; | |
1698 | char *annex; | |
1699 | char *offset; | |
1700 | ||
61012eef | 1701 | if (!startswith (own_buf, "qXfer:")) |
d08aafef PA |
1702 | return 0; |
1703 | ||
1704 | /* Grab the object, r/w and annex. */ | |
1705 | if (decode_xfer (own_buf + 6, &object, &rw, &annex, &offset) < 0) | |
1706 | { | |
1707 | write_enn (own_buf); | |
1708 | return 1; | |
1709 | } | |
1710 | ||
1711 | for (i = 0; | |
1712 | i < sizeof (qxfer_packets) / sizeof (qxfer_packets[0]); | |
1713 | i++) | |
1714 | { | |
1715 | const struct qxfer *q = &qxfer_packets[i]; | |
1716 | ||
1717 | if (strcmp (object, q->object) == 0) | |
1718 | { | |
1719 | if (strcmp (rw, "read") == 0) | |
1720 | { | |
1721 | unsigned char *data; | |
1722 | int n; | |
1723 | CORE_ADDR ofs; | |
1724 | unsigned int len; | |
1725 | ||
1726 | /* Grab the offset and length. */ | |
1727 | if (decode_xfer_read (offset, &ofs, &len) < 0) | |
1728 | { | |
1729 | write_enn (own_buf); | |
1730 | return 1; | |
1731 | } | |
1732 | ||
1733 | /* Read one extra byte, as an indicator of whether there is | |
1734 | more. */ | |
1735 | if (len > PBUFSIZ - 2) | |
1736 | len = PBUFSIZ - 2; | |
1737 | data = malloc (len + 1); | |
1738 | if (data == NULL) | |
1739 | { | |
1740 | write_enn (own_buf); | |
1741 | return 1; | |
1742 | } | |
1743 | n = (*q->xfer) (annex, data, NULL, ofs, len + 1); | |
1744 | if (n == -2) | |
1745 | { | |
1746 | free (data); | |
1747 | return 0; | |
1748 | } | |
5cc22e4c MM |
1749 | else if (n == -3) |
1750 | { | |
1751 | /* Preserve error message. */ | |
1752 | } | |
d08aafef PA |
1753 | else if (n < 0) |
1754 | write_enn (own_buf); | |
1755 | else if (n > len) | |
1756 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); | |
1757 | else | |
1758 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); | |
1759 | ||
1760 | free (data); | |
1761 | return 1; | |
1762 | } | |
1763 | else if (strcmp (rw, "write") == 0) | |
1764 | { | |
1765 | int n; | |
1766 | unsigned int len; | |
1767 | CORE_ADDR ofs; | |
1768 | unsigned char *data; | |
1769 | ||
1770 | strcpy (own_buf, "E00"); | |
1771 | data = malloc (packet_len - (offset - own_buf)); | |
1772 | if (data == NULL) | |
1773 | { | |
1774 | write_enn (own_buf); | |
1775 | return 1; | |
1776 | } | |
1777 | if (decode_xfer_write (offset, packet_len - (offset - own_buf), | |
1778 | &ofs, &len, data) < 0) | |
1779 | { | |
1780 | free (data); | |
1781 | write_enn (own_buf); | |
1782 | return 1; | |
1783 | } | |
1784 | ||
1785 | n = (*q->xfer) (annex, NULL, data, ofs, len); | |
1786 | if (n == -2) | |
1787 | { | |
1788 | free (data); | |
1789 | return 0; | |
1790 | } | |
5cc22e4c MM |
1791 | else if (n == -3) |
1792 | { | |
1793 | /* Preserve error message. */ | |
1794 | } | |
d08aafef PA |
1795 | else if (n < 0) |
1796 | write_enn (own_buf); | |
1797 | else | |
1798 | sprintf (own_buf, "%x", n); | |
dc146f7c | 1799 | |
d08aafef PA |
1800 | free (data); |
1801 | return 1; | |
1802 | } | |
dc146f7c | 1803 | |
d08aafef PA |
1804 | return 0; |
1805 | } | |
1806 | } | |
dc146f7c | 1807 | |
d08aafef | 1808 | return 0; |
dc146f7c VP |
1809 | } |
1810 | ||
30ba68cb MS |
1811 | /* Table used by the crc32 function to calcuate the checksum. */ |
1812 | ||
1813 | static unsigned int crc32_table[256] = | |
1814 | {0, 0}; | |
1815 | ||
1816 | /* Compute 32 bit CRC from inferior memory. | |
1817 | ||
1818 | On success, return 32 bit CRC. | |
1819 | On failure, return (unsigned long long) -1. */ | |
1820 | ||
1821 | static unsigned long long | |
1822 | crc32 (CORE_ADDR base, int len, unsigned int crc) | |
1823 | { | |
1824 | if (!crc32_table[1]) | |
1825 | { | |
1826 | /* Initialize the CRC table and the decoding table. */ | |
1827 | int i, j; | |
1828 | unsigned int c; | |
1829 | ||
1830 | for (i = 0; i < 256; i++) | |
1831 | { | |
1832 | for (c = i << 24, j = 8; j > 0; --j) | |
1833 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
1834 | crc32_table[i] = c; | |
1835 | } | |
1836 | } | |
1837 | ||
1838 | while (len--) | |
1839 | { | |
1840 | unsigned char byte = 0; | |
1841 | ||
1842 | /* Return failure if memory read fails. */ | |
1843 | if (read_inferior_memory (base, &byte, 1) != 0) | |
1844 | return (unsigned long long) -1; | |
1845 | ||
1846 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ byte) & 255]; | |
1847 | base++; | |
1848 | } | |
1849 | return (unsigned long long) crc; | |
1850 | } | |
1851 | ||
043c3577 MM |
1852 | /* Add supported btrace packets to BUF. */ |
1853 | ||
1854 | static void | |
1855 | supported_btrace_packets (char *buf) | |
1856 | { | |
1857 | if (target_supports_btrace (BTRACE_FORMAT_BTS)) | |
d33501a5 MM |
1858 | { |
1859 | strcat (buf, ";Qbtrace:bts+"); | |
1860 | strcat (buf, ";Qbtrace-conf:bts:size+"); | |
1861 | } | |
043c3577 MM |
1862 | else |
1863 | return; | |
1864 | ||
1865 | strcat (buf, ";Qbtrace:off+"); | |
1866 | strcat (buf, ";qXfer:btrace:read+"); | |
f4abbc16 | 1867 | strcat (buf, ";qXfer:btrace-conf:read+"); |
043c3577 MM |
1868 | } |
1869 | ||
ce3a066d | 1870 | /* Handle all of the extended 'q' packets. */ |
d08aafef | 1871 | |
ce3a066d | 1872 | void |
0e7f50da | 1873 | handle_query (char *own_buf, int packet_len, int *new_packet_len_p) |
ce3a066d | 1874 | { |
0d62e5e8 DJ |
1875 | static struct inferior_list_entry *thread_ptr; |
1876 | ||
bb63802a | 1877 | /* Reply the current thread id. */ |
db42f210 | 1878 | if (strcmp ("qC", own_buf) == 0 && !disable_packet_qC) |
bb63802a | 1879 | { |
95954743 | 1880 | ptid_t gdb_id; |
2d717e4f | 1881 | require_running (own_buf); |
bd99dc85 | 1882 | |
95954743 PA |
1883 | if (!ptid_equal (general_thread, null_ptid) |
1884 | && !ptid_equal (general_thread, minus_one_ptid)) | |
bd99dc85 PA |
1885 | gdb_id = general_thread; |
1886 | else | |
1887 | { | |
649ebbca | 1888 | thread_ptr = get_first_inferior (&all_threads); |
bd99dc85 PA |
1889 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); |
1890 | } | |
1891 | ||
95954743 PA |
1892 | sprintf (own_buf, "QC"); |
1893 | own_buf += 2; | |
4b812f4e | 1894 | write_ptid (own_buf, gdb_id); |
bb63802a UW |
1895 | return; |
1896 | } | |
1897 | ||
ce3a066d DJ |
1898 | if (strcmp ("qSymbol::", own_buf) == 0) |
1899 | { | |
d3bbe7a0 PA |
1900 | /* GDB is suggesting new symbols have been loaded. This may |
1901 | mean a new shared library has been detected as loaded, so | |
1902 | take the opportunity to check if breakpoints we think are | |
1903 | inserted, still are. Note that it isn't guaranteed that | |
1904 | we'll see this when a shared library is loaded, and nor will | |
1905 | we see this for unloads (although breakpoints in unloaded | |
1906 | libraries shouldn't trigger), as GDB may not find symbols for | |
1907 | the library at all. We also re-validate breakpoints when we | |
1908 | see a second GDB breakpoint for the same address, and or when | |
1909 | we access breakpoint shadows. */ | |
1910 | validate_breakpoints (); | |
1911 | ||
fa593d66 PA |
1912 | if (target_supports_tracepoints ()) |
1913 | tracepoint_look_up_symbols (); | |
1914 | ||
2d717e4f | 1915 | if (target_running () && the_target->look_up_symbols != NULL) |
2f2893d9 DJ |
1916 | (*the_target->look_up_symbols) (); |
1917 | ||
ce3a066d DJ |
1918 | strcpy (own_buf, "OK"); |
1919 | return; | |
1920 | } | |
1921 | ||
db42f210 | 1922 | if (!disable_packet_qfThreadInfo) |
0d62e5e8 | 1923 | { |
db42f210 | 1924 | if (strcmp ("qfThreadInfo", own_buf) == 0) |
0d62e5e8 | 1925 | { |
95954743 PA |
1926 | ptid_t gdb_id; |
1927 | ||
db42f210 | 1928 | require_running (own_buf); |
649ebbca | 1929 | thread_ptr = get_first_inferior (&all_threads); |
95954743 PA |
1930 | |
1931 | *own_buf++ = 'm'; | |
1932 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
1933 | write_ptid (own_buf, gdb_id); | |
0d62e5e8 DJ |
1934 | thread_ptr = thread_ptr->next; |
1935 | return; | |
1936 | } | |
db42f210 PA |
1937 | |
1938 | if (strcmp ("qsThreadInfo", own_buf) == 0) | |
0d62e5e8 | 1939 | { |
95954743 PA |
1940 | ptid_t gdb_id; |
1941 | ||
db42f210 PA |
1942 | require_running (own_buf); |
1943 | if (thread_ptr != NULL) | |
1944 | { | |
95954743 PA |
1945 | *own_buf++ = 'm'; |
1946 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
1947 | write_ptid (own_buf, gdb_id); | |
db42f210 PA |
1948 | thread_ptr = thread_ptr->next; |
1949 | return; | |
1950 | } | |
1951 | else | |
1952 | { | |
1953 | sprintf (own_buf, "l"); | |
1954 | return; | |
1955 | } | |
0d62e5e8 DJ |
1956 | } |
1957 | } | |
aa691b87 | 1958 | |
52fb6437 NS |
1959 | if (the_target->read_offsets != NULL |
1960 | && strcmp ("qOffsets", own_buf) == 0) | |
1961 | { | |
1962 | CORE_ADDR text, data; | |
2d717e4f DJ |
1963 | |
1964 | require_running (own_buf); | |
52fb6437 NS |
1965 | if (the_target->read_offsets (&text, &data)) |
1966 | sprintf (own_buf, "Text=%lX;Data=%lX;Bss=%lX", | |
1967 | (long)text, (long)data, (long)data); | |
1968 | else | |
1969 | write_enn (own_buf); | |
1b3f6016 | 1970 | |
52fb6437 NS |
1971 | return; |
1972 | } | |
1973 | ||
be2a5f71 | 1974 | /* Protocol features query. */ |
61012eef | 1975 | if (startswith (own_buf, "qSupported") |
be2a5f71 DJ |
1976 | && (own_buf[10] == ':' || own_buf[10] == '\0')) |
1977 | { | |
95954743 | 1978 | char *p = &own_buf[10]; |
fa593d66 | 1979 | int gdb_supports_qRelocInsn = 0; |
95954743 | 1980 | |
1570b33e L |
1981 | /* Start processing qSupported packet. */ |
1982 | target_process_qsupported (NULL); | |
1983 | ||
95954743 PA |
1984 | /* Process each feature being provided by GDB. The first |
1985 | feature will follow a ':', and latter features will follow | |
1986 | ';'. */ | |
1987 | if (*p == ':') | |
d149dd1d PA |
1988 | { |
1989 | char **qsupported = NULL; | |
1990 | int count = 0; | |
1991 | int i; | |
1992 | ||
1993 | /* Two passes, to avoid nested strtok calls in | |
1994 | target_process_qsupported. */ | |
1995 | for (p = strtok (p + 1, ";"); | |
1996 | p != NULL; | |
1997 | p = strtok (NULL, ";")) | |
1998 | { | |
1999 | count++; | |
2000 | qsupported = xrealloc (qsupported, count * sizeof (char *)); | |
2001 | qsupported[count - 1] = xstrdup (p); | |
2002 | } | |
2003 | ||
2004 | for (i = 0; i < count; i++) | |
2005 | { | |
2006 | p = qsupported[i]; | |
2007 | if (strcmp (p, "multiprocess+") == 0) | |
2008 | { | |
2009 | /* GDB supports and wants multi-process support if | |
2010 | possible. */ | |
2011 | if (target_supports_multi_process ()) | |
2012 | multi_process = 1; | |
2013 | } | |
fa593d66 PA |
2014 | else if (strcmp (p, "qRelocInsn+") == 0) |
2015 | { | |
2016 | /* GDB supports relocate instruction requests. */ | |
2017 | gdb_supports_qRelocInsn = 1; | |
2018 | } | |
1ec68e26 PA |
2019 | else if (strcmp (p, "swbreak+") == 0) |
2020 | { | |
2021 | /* GDB wants us to report whether a trap is caused | |
2022 | by a software breakpoint and for us to handle PC | |
2023 | adjustment if necessary on this target. */ | |
2024 | if (target_supports_stopped_by_sw_breakpoint ()) | |
2025 | swbreak_feature = 1; | |
2026 | } | |
2027 | else if (strcmp (p, "hwbreak+") == 0) | |
2028 | { | |
2029 | /* GDB wants us to report whether a trap is caused | |
2030 | by a hardware breakpoint. */ | |
2031 | if (target_supports_stopped_by_hw_breakpoint ()) | |
2032 | hwbreak_feature = 1; | |
2033 | } | |
d149dd1d PA |
2034 | else |
2035 | target_process_qsupported (p); | |
2036 | ||
2037 | free (p); | |
2038 | } | |
2039 | ||
2040 | free (qsupported); | |
2041 | } | |
95954743 | 2042 | |
9b224c5e PA |
2043 | sprintf (own_buf, |
2044 | "PacketSize=%x;QPassSignals+;QProgramSignals+", | |
2045 | PBUFSIZ - 1); | |
0876f84a | 2046 | |
2268b414 | 2047 | if (the_target->qxfer_libraries_svr4 != NULL) |
b1fbec62 GB |
2048 | strcat (own_buf, ";qXfer:libraries-svr4:read+" |
2049 | ";augmented-libraries-svr4-read+"); | |
2268b414 JK |
2050 | else |
2051 | { | |
2052 | /* We do not have any hook to indicate whether the non-SVR4 target | |
2053 | backend supports qXfer:libraries:read, so always report it. */ | |
2054 | strcat (own_buf, ";qXfer:libraries:read+"); | |
2055 | } | |
255e7678 | 2056 | |
0876f84a | 2057 | if (the_target->read_auxv != NULL) |
9f2e1e63 | 2058 | strcat (own_buf, ";qXfer:auxv:read+"); |
2d717e4f | 2059 | |
0e7f50da UW |
2060 | if (the_target->qxfer_spu != NULL) |
2061 | strcat (own_buf, ";qXfer:spu:read+;qXfer:spu:write+"); | |
0876f84a | 2062 | |
4aa995e1 PA |
2063 | if (the_target->qxfer_siginfo != NULL) |
2064 | strcat (own_buf, ";qXfer:siginfo:read+;qXfer:siginfo:write+"); | |
2065 | ||
78d85199 YQ |
2066 | if (the_target->read_loadmap != NULL) |
2067 | strcat (own_buf, ";qXfer:fdpic:read+"); | |
2068 | ||
221c031f UW |
2069 | /* We always report qXfer:features:read, as targets may |
2070 | install XML files on a subsequent call to arch_setup. | |
2071 | If we reported to GDB on startup that we don't support | |
2072 | qXfer:feature:read at all, we will never be re-queried. */ | |
2073 | strcat (own_buf, ";qXfer:features:read+"); | |
23181151 | 2074 | |
a6f3e723 SL |
2075 | if (transport_is_reliable) |
2076 | strcat (own_buf, ";QStartNoAckMode+"); | |
07e059b5 VP |
2077 | |
2078 | if (the_target->qxfer_osdata != NULL) | |
1b3f6016 | 2079 | strcat (own_buf, ";qXfer:osdata:read+"); |
07e059b5 | 2080 | |
cf8fd78b PA |
2081 | if (target_supports_multi_process ()) |
2082 | strcat (own_buf, ";multiprocess+"); | |
95954743 | 2083 | |
bd99dc85 PA |
2084 | if (target_supports_non_stop ()) |
2085 | strcat (own_buf, ";QNonStop+"); | |
2086 | ||
03583c20 UW |
2087 | if (target_supports_disable_randomization ()) |
2088 | strcat (own_buf, ";QDisableRandomization+"); | |
2089 | ||
dc146f7c VP |
2090 | strcat (own_buf, ";qXfer:threads:read+"); |
2091 | ||
219f2f23 PA |
2092 | if (target_supports_tracepoints ()) |
2093 | { | |
2094 | strcat (own_buf, ";ConditionalTracepoints+"); | |
2095 | strcat (own_buf, ";TraceStateVariables+"); | |
2096 | strcat (own_buf, ";TracepointSource+"); | |
8336d594 | 2097 | strcat (own_buf, ";DisconnectedTracing+"); |
fa593d66 PA |
2098 | if (gdb_supports_qRelocInsn && target_supports_fast_tracepoints ()) |
2099 | strcat (own_buf, ";FastTracepoints+"); | |
0fb4aa4b | 2100 | strcat (own_buf, ";StaticTracepoints+"); |
1e4d1764 | 2101 | strcat (own_buf, ";InstallInTrace+"); |
0fb4aa4b | 2102 | strcat (own_buf, ";qXfer:statictrace:read+"); |
b3b9301e | 2103 | strcat (own_buf, ";qXfer:traceframe-info:read+"); |
d248b706 | 2104 | strcat (own_buf, ";EnableDisableTracepoints+"); |
f6f899bf | 2105 | strcat (own_buf, ";QTBuffer:size+"); |
3065dfb6 | 2106 | strcat (own_buf, ";tracenz+"); |
219f2f23 PA |
2107 | } |
2108 | ||
d3ce09f5 | 2109 | /* Support target-side breakpoint conditions and commands. */ |
45614f15 YQ |
2110 | if (target_supports_conditional_breakpoints ()) |
2111 | strcat (own_buf, ";ConditionalBreakpoints+"); | |
d3ce09f5 | 2112 | strcat (own_buf, ";BreakpointCommands+"); |
9f3a5c85 | 2113 | |
d1feda86 YQ |
2114 | if (target_supports_agent ()) |
2115 | strcat (own_buf, ";QAgent+"); | |
2116 | ||
043c3577 | 2117 | supported_btrace_packets (own_buf); |
9accd112 | 2118 | |
1ec68e26 PA |
2119 | if (target_supports_stopped_by_sw_breakpoint ()) |
2120 | strcat (own_buf, ";swbreak+"); | |
2121 | ||
2122 | if (target_supports_stopped_by_hw_breakpoint ()) | |
2123 | strcat (own_buf, ";hwbreak+"); | |
2124 | ||
e57f1de3 GB |
2125 | if (the_target->pid_to_exec_file != NULL) |
2126 | strcat (own_buf, ";qXfer:exec-file:read+"); | |
2127 | ||
be2a5f71 DJ |
2128 | return; |
2129 | } | |
2130 | ||
dae5f5cf DJ |
2131 | /* Thread-local storage support. */ |
2132 | if (the_target->get_tls_address != NULL | |
61012eef | 2133 | && startswith (own_buf, "qGetTLSAddr:")) |
dae5f5cf DJ |
2134 | { |
2135 | char *p = own_buf + 12; | |
5b1c542e | 2136 | CORE_ADDR parts[2], address = 0; |
dae5f5cf | 2137 | int i, err; |
95954743 | 2138 | ptid_t ptid = null_ptid; |
dae5f5cf | 2139 | |
2d717e4f DJ |
2140 | require_running (own_buf); |
2141 | ||
dae5f5cf DJ |
2142 | for (i = 0; i < 3; i++) |
2143 | { | |
2144 | char *p2; | |
2145 | int len; | |
2146 | ||
2147 | if (p == NULL) | |
2148 | break; | |
2149 | ||
2150 | p2 = strchr (p, ','); | |
2151 | if (p2) | |
2152 | { | |
2153 | len = p2 - p; | |
2154 | p2++; | |
2155 | } | |
2156 | else | |
2157 | { | |
2158 | len = strlen (p); | |
2159 | p2 = NULL; | |
2160 | } | |
2161 | ||
5b1c542e | 2162 | if (i == 0) |
95954743 | 2163 | ptid = read_ptid (p, NULL); |
5b1c542e PA |
2164 | else |
2165 | decode_address (&parts[i - 1], p, len); | |
dae5f5cf DJ |
2166 | p = p2; |
2167 | } | |
2168 | ||
2169 | if (p != NULL || i < 3) | |
2170 | err = 1; | |
2171 | else | |
2172 | { | |
e09875d4 | 2173 | struct thread_info *thread = find_thread_ptid (ptid); |
dae5f5cf DJ |
2174 | |
2175 | if (thread == NULL) | |
2176 | err = 2; | |
2177 | else | |
5b1c542e | 2178 | err = the_target->get_tls_address (thread, parts[0], parts[1], |
dae5f5cf DJ |
2179 | &address); |
2180 | } | |
2181 | ||
2182 | if (err == 0) | |
2183 | { | |
c6f46ca0 | 2184 | strcpy (own_buf, paddress(address)); |
dae5f5cf DJ |
2185 | return; |
2186 | } | |
2187 | else if (err > 0) | |
2188 | { | |
2189 | write_enn (own_buf); | |
2190 | return; | |
2191 | } | |
2192 | ||
2193 | /* Otherwise, pretend we do not understand this packet. */ | |
2194 | } | |
2195 | ||
711e434b PM |
2196 | /* Windows OS Thread Information Block address support. */ |
2197 | if (the_target->get_tib_address != NULL | |
61012eef | 2198 | && startswith (own_buf, "qGetTIBAddr:")) |
711e434b PM |
2199 | { |
2200 | char *annex; | |
2201 | int n; | |
2202 | CORE_ADDR tlb; | |
2203 | ptid_t ptid = read_ptid (own_buf + 12, &annex); | |
2204 | ||
2205 | n = (*the_target->get_tib_address) (ptid, &tlb); | |
2206 | if (n == 1) | |
2207 | { | |
c6f46ca0 | 2208 | strcpy (own_buf, paddress(tlb)); |
711e434b PM |
2209 | return; |
2210 | } | |
2211 | else if (n == 0) | |
2212 | { | |
2213 | write_enn (own_buf); | |
2214 | return; | |
2215 | } | |
2216 | return; | |
2217 | } | |
2218 | ||
c74d0ad8 | 2219 | /* Handle "monitor" commands. */ |
61012eef | 2220 | if (startswith (own_buf, "qRcmd,")) |
c74d0ad8 | 2221 | { |
aef93bd7 | 2222 | char *mon = malloc (PBUFSIZ); |
c74d0ad8 DJ |
2223 | int len = strlen (own_buf + 6); |
2224 | ||
aef93bd7 DE |
2225 | if (mon == NULL) |
2226 | { | |
2227 | write_enn (own_buf); | |
2228 | return; | |
2229 | } | |
2230 | ||
ff0e980e TT |
2231 | if ((len % 2) != 0 |
2232 | || hex2bin (own_buf + 6, (gdb_byte *) mon, len / 2) != len / 2) | |
c74d0ad8 DJ |
2233 | { |
2234 | write_enn (own_buf); | |
2235 | free (mon); | |
2236 | return; | |
2237 | } | |
2238 | mon[len / 2] = '\0'; | |
2239 | ||
2240 | write_ok (own_buf); | |
2241 | ||
cdbfd419 PP |
2242 | if (the_target->handle_monitor_command == NULL |
2243 | || (*the_target->handle_monitor_command) (mon) == 0) | |
2244 | /* Default processing. */ | |
d73f2619 | 2245 | handle_monitor_command (mon, own_buf); |
c74d0ad8 DJ |
2246 | |
2247 | free (mon); | |
2248 | return; | |
2249 | } | |
2250 | ||
61012eef | 2251 | if (startswith (own_buf, "qSearch:memory:")) |
08388c79 DE |
2252 | { |
2253 | require_running (own_buf); | |
2254 | handle_search_memory (own_buf, packet_len); | |
2255 | return; | |
2256 | } | |
2257 | ||
95954743 | 2258 | if (strcmp (own_buf, "qAttached") == 0 |
61012eef | 2259 | || startswith (own_buf, "qAttached:")) |
0b16c5cf | 2260 | { |
95954743 PA |
2261 | struct process_info *process; |
2262 | ||
2263 | if (own_buf[sizeof ("qAttached") - 1]) | |
2264 | { | |
2265 | int pid = strtoul (own_buf + sizeof ("qAttached:") - 1, NULL, 16); | |
2266 | process = (struct process_info *) | |
2267 | find_inferior_id (&all_processes, pid_to_ptid (pid)); | |
2268 | } | |
2269 | else | |
2270 | { | |
2271 | require_running (own_buf); | |
2272 | process = current_process (); | |
2273 | } | |
2274 | ||
2275 | if (process == NULL) | |
2276 | { | |
2277 | write_enn (own_buf); | |
2278 | return; | |
2279 | } | |
2280 | ||
2281 | strcpy (own_buf, process->attached ? "1" : "0"); | |
0b16c5cf PA |
2282 | return; |
2283 | } | |
2284 | ||
61012eef | 2285 | if (startswith (own_buf, "qCRC:")) |
30ba68cb MS |
2286 | { |
2287 | /* CRC check (compare-section). */ | |
2288 | char *comma; | |
aca22551 | 2289 | ULONGEST base; |
30ba68cb MS |
2290 | int len; |
2291 | unsigned long long crc; | |
2292 | ||
2293 | require_running (own_buf); | |
aca22551 | 2294 | comma = unpack_varlen_hex (own_buf + 5, &base); |
30ba68cb MS |
2295 | if (*comma++ != ',') |
2296 | { | |
2297 | write_enn (own_buf); | |
2298 | return; | |
2299 | } | |
2300 | len = strtoul (comma, NULL, 16); | |
2301 | crc = crc32 (base, len, 0xffffffff); | |
2302 | /* Check for memory failure. */ | |
2303 | if (crc == (unsigned long long) -1) | |
2304 | { | |
2305 | write_enn (own_buf); | |
2306 | return; | |
2307 | } | |
2308 | sprintf (own_buf, "C%lx", (unsigned long) crc); | |
2309 | return; | |
2310 | } | |
2311 | ||
d08aafef PA |
2312 | if (handle_qxfer (own_buf, packet_len, new_packet_len_p)) |
2313 | return; | |
2314 | ||
219f2f23 PA |
2315 | if (target_supports_tracepoints () && handle_tracepoint_query (own_buf)) |
2316 | return; | |
2317 | ||
ce3a066d DJ |
2318 | /* Otherwise we didn't know what packet it was. Say we didn't |
2319 | understand it. */ | |
2320 | own_buf[0] = 0; | |
2321 | } | |
2322 | ||
ce1a5b52 | 2323 | static void gdb_wants_all_threads_stopped (void); |
b7ea362b PA |
2324 | static void resume (struct thread_resume *actions, size_t n); |
2325 | ||
649ebbca DE |
2326 | /* The callback that is passed to visit_actioned_threads. */ |
2327 | typedef int (visit_actioned_threads_callback_ftype) | |
2328 | (const struct thread_resume *, struct thread_info *); | |
2329 | ||
2330 | /* Struct to pass data to visit_actioned_threads. */ | |
2331 | ||
2332 | struct visit_actioned_threads_data | |
2333 | { | |
2334 | const struct thread_resume *actions; | |
2335 | size_t num_actions; | |
2336 | visit_actioned_threads_callback_ftype *callback; | |
2337 | }; | |
2338 | ||
b7ea362b PA |
2339 | /* Call CALLBACK for any thread to which ACTIONS applies to. Returns |
2340 | true if CALLBACK returns true. Returns false if no matching thread | |
649ebbca DE |
2341 | is found or CALLBACK results false. |
2342 | Note: This function is itself a callback for find_inferior. */ | |
b7ea362b PA |
2343 | |
2344 | static int | |
649ebbca | 2345 | visit_actioned_threads (struct inferior_list_entry *entry, void *datap) |
b7ea362b | 2346 | { |
649ebbca DE |
2347 | struct visit_actioned_threads_data *data = datap; |
2348 | const struct thread_resume *actions = data->actions; | |
2349 | size_t num_actions = data->num_actions; | |
2350 | visit_actioned_threads_callback_ftype *callback = data->callback; | |
2351 | size_t i; | |
b7ea362b | 2352 | |
649ebbca | 2353 | for (i = 0; i < num_actions; i++) |
b7ea362b | 2354 | { |
649ebbca | 2355 | const struct thread_resume *action = &actions[i]; |
b7ea362b | 2356 | |
649ebbca DE |
2357 | if (ptid_equal (action->thread, minus_one_ptid) |
2358 | || ptid_equal (action->thread, entry->id) | |
2359 | || ((ptid_get_pid (action->thread) | |
2360 | == ptid_get_pid (entry->id)) | |
2361 | && ptid_get_lwp (action->thread) == -1)) | |
b7ea362b | 2362 | { |
649ebbca | 2363 | struct thread_info *thread = (struct thread_info *) entry; |
b7ea362b | 2364 | |
649ebbca DE |
2365 | if ((*callback) (action, thread)) |
2366 | return 1; | |
b7ea362b PA |
2367 | } |
2368 | } | |
2369 | ||
2370 | return 0; | |
2371 | } | |
2372 | ||
2373 | /* Callback for visit_actioned_threads. If the thread has a pending | |
2374 | status to report, report it now. */ | |
2375 | ||
2376 | static int | |
2377 | handle_pending_status (const struct thread_resume *resumption, | |
2378 | struct thread_info *thread) | |
2379 | { | |
2380 | if (thread->status_pending_p) | |
2381 | { | |
2382 | thread->status_pending_p = 0; | |
2383 | ||
2384 | last_status = thread->last_status; | |
2385 | last_ptid = thread->entry.id; | |
2386 | prepare_resume_reply (own_buf, last_ptid, &last_status); | |
2387 | return 1; | |
2388 | } | |
2389 | return 0; | |
2390 | } | |
ce1a5b52 | 2391 | |
64386c31 DJ |
2392 | /* Parse vCont packets. */ |
2393 | void | |
5b1c542e | 2394 | handle_v_cont (char *own_buf) |
64386c31 DJ |
2395 | { |
2396 | char *p, *q; | |
2397 | int n = 0, i = 0; | |
2bd7c093 | 2398 | struct thread_resume *resume_info; |
95954743 | 2399 | struct thread_resume default_action = {{0}}; |
64386c31 DJ |
2400 | |
2401 | /* Count the number of semicolons in the packet. There should be one | |
2402 | for every action. */ | |
2403 | p = &own_buf[5]; | |
2404 | while (p) | |
2405 | { | |
2406 | n++; | |
2407 | p++; | |
2408 | p = strchr (p, ';'); | |
2409 | } | |
2bd7c093 PA |
2410 | |
2411 | resume_info = malloc (n * sizeof (resume_info[0])); | |
aef93bd7 DE |
2412 | if (resume_info == NULL) |
2413 | goto err; | |
64386c31 | 2414 | |
64386c31 | 2415 | p = &own_buf[5]; |
64386c31 DJ |
2416 | while (*p) |
2417 | { | |
2418 | p++; | |
2419 | ||
c2d6af84 PA |
2420 | memset (&resume_info[i], 0, sizeof resume_info[i]); |
2421 | ||
64386c31 | 2422 | if (p[0] == 's' || p[0] == 'S') |
bd99dc85 | 2423 | resume_info[i].kind = resume_step; |
c2d6af84 PA |
2424 | else if (p[0] == 'r') |
2425 | resume_info[i].kind = resume_step; | |
64386c31 | 2426 | else if (p[0] == 'c' || p[0] == 'C') |
bd99dc85 PA |
2427 | resume_info[i].kind = resume_continue; |
2428 | else if (p[0] == 't') | |
2429 | resume_info[i].kind = resume_stop; | |
64386c31 DJ |
2430 | else |
2431 | goto err; | |
2432 | ||
2433 | if (p[0] == 'S' || p[0] == 'C') | |
2434 | { | |
2435 | int sig; | |
2436 | sig = strtol (p + 1, &q, 16); | |
2437 | if (p == q) | |
2438 | goto err; | |
2439 | p = q; | |
2440 | ||
2ea28649 | 2441 | if (!gdb_signal_to_host_p (sig)) |
64386c31 | 2442 | goto err; |
2ea28649 | 2443 | resume_info[i].sig = gdb_signal_to_host (sig); |
64386c31 | 2444 | } |
c2d6af84 PA |
2445 | else if (p[0] == 'r') |
2446 | { | |
6740dc9c | 2447 | ULONGEST addr; |
c2d6af84 | 2448 | |
6740dc9c PA |
2449 | p = unpack_varlen_hex (p + 1, &addr); |
2450 | resume_info[i].step_range_start = addr; | |
c2d6af84 | 2451 | |
6740dc9c PA |
2452 | if (*p != ',') |
2453 | goto err; | |
c2d6af84 | 2454 | |
6740dc9c PA |
2455 | p = unpack_varlen_hex (p + 1, &addr); |
2456 | resume_info[i].step_range_end = addr; | |
c2d6af84 | 2457 | } |
64386c31 DJ |
2458 | else |
2459 | { | |
64386c31 DJ |
2460 | p = p + 1; |
2461 | } | |
2462 | ||
2463 | if (p[0] == 0) | |
2464 | { | |
95954743 | 2465 | resume_info[i].thread = minus_one_ptid; |
64386c31 DJ |
2466 | default_action = resume_info[i]; |
2467 | ||
2468 | /* Note: we don't increment i here, we'll overwrite this entry | |
2469 | the next time through. */ | |
2470 | } | |
2471 | else if (p[0] == ':') | |
2472 | { | |
95954743 | 2473 | ptid_t ptid = read_ptid (p + 1, &q); |
a06660f7 | 2474 | |
64386c31 DJ |
2475 | if (p == q) |
2476 | goto err; | |
2477 | p = q; | |
2478 | if (p[0] != ';' && p[0] != 0) | |
2479 | goto err; | |
2480 | ||
95954743 | 2481 | resume_info[i].thread = ptid; |
a06660f7 | 2482 | |
64386c31 DJ |
2483 | i++; |
2484 | } | |
2485 | } | |
2486 | ||
2bd7c093 PA |
2487 | if (i < n) |
2488 | resume_info[i] = default_action; | |
64386c31 | 2489 | |
0bfdf32f | 2490 | set_desired_thread (0); |
64386c31 | 2491 | |
b7ea362b PA |
2492 | resume (resume_info, n); |
2493 | free (resume_info); | |
2494 | return; | |
2495 | ||
2496 | err: | |
2497 | write_enn (own_buf); | |
2498 | free (resume_info); | |
2499 | return; | |
2500 | } | |
2501 | ||
2502 | /* Resume target with ACTIONS, an array of NUM_ACTIONS elements. */ | |
2503 | ||
2504 | static void | |
2505 | resume (struct thread_resume *actions, size_t num_actions) | |
2506 | { | |
bd99dc85 | 2507 | if (!non_stop) |
b7ea362b PA |
2508 | { |
2509 | /* Check if among the threads that GDB wants actioned, there's | |
2510 | one with a pending status to report. If so, skip actually | |
2511 | resuming/stopping and report the pending event | |
2512 | immediately. */ | |
649ebbca DE |
2513 | struct visit_actioned_threads_data data; |
2514 | ||
2515 | data.actions = actions; | |
2516 | data.num_actions = num_actions; | |
2517 | data.callback = handle_pending_status; | |
2518 | if (find_inferior (&all_threads, visit_actioned_threads, &data) != NULL) | |
b7ea362b | 2519 | return; |
bd99dc85 | 2520 | |
b7ea362b PA |
2521 | enable_async_io (); |
2522 | } | |
64386c31 | 2523 | |
b7ea362b | 2524 | (*the_target->resume) (actions, num_actions); |
64386c31 | 2525 | |
bd99dc85 PA |
2526 | if (non_stop) |
2527 | write_ok (own_buf); | |
2528 | else | |
2529 | { | |
95954743 | 2530 | last_ptid = mywait (minus_one_ptid, &last_status, 0, 1); |
ce1a5b52 | 2531 | |
fa96cb38 PA |
2532 | if (last_status.kind == TARGET_WAITKIND_NO_RESUMED) |
2533 | { | |
2534 | /* No proper RSP support for this yet. At least return | |
2535 | error. */ | |
2536 | sprintf (own_buf, "E.No unwaited-for children left."); | |
2537 | disable_async_io (); | |
2538 | return; | |
2539 | } | |
2540 | ||
d20a8ad9 | 2541 | if (last_status.kind != TARGET_WAITKIND_EXITED |
fa96cb38 PA |
2542 | && last_status.kind != TARGET_WAITKIND_SIGNALLED |
2543 | && last_status.kind != TARGET_WAITKIND_NO_RESUMED) | |
0bfdf32f | 2544 | current_thread->last_status = last_status; |
d20a8ad9 | 2545 | |
ce1a5b52 PA |
2546 | /* From the client's perspective, all-stop mode always stops all |
2547 | threads implicitly (and the target backend has already done | |
2548 | so by now). Tag all threads as "want-stopped", so we don't | |
2549 | resume them implicitly without the client telling us to. */ | |
2550 | gdb_wants_all_threads_stopped (); | |
bd99dc85 PA |
2551 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
2552 | disable_async_io (); | |
6bd31874 JB |
2553 | |
2554 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
2555 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2556 | mourn_inferior (find_process_pid (ptid_get_pid (last_ptid))); | |
bd99dc85 | 2557 | } |
64386c31 DJ |
2558 | } |
2559 | ||
2d717e4f DJ |
2560 | /* Attach to a new program. Return 1 if successful, 0 if failure. */ |
2561 | int | |
5b1c542e | 2562 | handle_v_attach (char *own_buf) |
2d717e4f DJ |
2563 | { |
2564 | int pid; | |
2565 | ||
2566 | pid = strtol (own_buf + 8, NULL, 16); | |
5b1c542e | 2567 | if (pid != 0 && attach_inferior (pid) == 0) |
2d717e4f | 2568 | { |
aeba519e PA |
2569 | /* Don't report shared library events after attaching, even if |
2570 | some libraries are preloaded. GDB will always poll the | |
2571 | library list. Avoids the "stopped by shared library event" | |
2572 | notice on the GDB side. */ | |
2573 | dlls_changed = 0; | |
bd99dc85 PA |
2574 | |
2575 | if (non_stop) | |
2576 | { | |
2577 | /* In non-stop, we don't send a resume reply. Stop events | |
2578 | will follow up using the normal notification | |
2579 | mechanism. */ | |
2580 | write_ok (own_buf); | |
2581 | } | |
2582 | else | |
2583 | prepare_resume_reply (own_buf, last_ptid, &last_status); | |
2584 | ||
2d717e4f DJ |
2585 | return 1; |
2586 | } | |
2587 | else | |
2588 | { | |
2589 | write_enn (own_buf); | |
2590 | return 0; | |
2591 | } | |
2592 | } | |
2593 | ||
2594 | /* Run a new program. Return 1 if successful, 0 if failure. */ | |
2595 | static int | |
5b1c542e | 2596 | handle_v_run (char *own_buf) |
2d717e4f | 2597 | { |
aef93bd7 | 2598 | char *p, *next_p, **new_argv; |
2d717e4f DJ |
2599 | int i, new_argc; |
2600 | ||
2601 | new_argc = 0; | |
2602 | for (p = own_buf + strlen ("vRun;"); p && *p; p = strchr (p, ';')) | |
2603 | { | |
2604 | p++; | |
2605 | new_argc++; | |
2606 | } | |
2607 | ||
aef93bd7 DE |
2608 | new_argv = calloc (new_argc + 2, sizeof (char *)); |
2609 | if (new_argv == NULL) | |
2610 | { | |
2611 | write_enn (own_buf); | |
2612 | return 0; | |
2613 | } | |
2614 | ||
2d717e4f DJ |
2615 | i = 0; |
2616 | for (p = own_buf + strlen ("vRun;"); *p; p = next_p) | |
2617 | { | |
2618 | next_p = strchr (p, ';'); | |
2619 | if (next_p == NULL) | |
2620 | next_p = p + strlen (p); | |
2621 | ||
2622 | if (i == 0 && p == next_p) | |
2623 | new_argv[i] = NULL; | |
2624 | else | |
2625 | { | |
aef93bd7 | 2626 | /* FIXME: Fail request if out of memory instead of dying. */ |
bca929d3 | 2627 | new_argv[i] = xmalloc (1 + (next_p - p) / 2); |
ff0e980e | 2628 | hex2bin (p, (gdb_byte *) new_argv[i], (next_p - p) / 2); |
2d717e4f DJ |
2629 | new_argv[i][(next_p - p) / 2] = '\0'; |
2630 | } | |
2631 | ||
2632 | if (*next_p) | |
2633 | next_p++; | |
2634 | i++; | |
2635 | } | |
2636 | new_argv[i] = NULL; | |
2637 | ||
2638 | if (new_argv[0] == NULL) | |
2639 | { | |
f142445f DJ |
2640 | /* GDB didn't specify a program to run. Use the program from the |
2641 | last run with the new argument list. */ | |
9b710a42 | 2642 | |
2d717e4f DJ |
2643 | if (program_argv == NULL) |
2644 | { | |
2645 | write_enn (own_buf); | |
b2c04452 | 2646 | freeargv (new_argv); |
2d717e4f DJ |
2647 | return 0; |
2648 | } | |
2649 | ||
aef93bd7 DE |
2650 | new_argv[0] = strdup (program_argv[0]); |
2651 | if (new_argv[0] == NULL) | |
2652 | { | |
aef93bd7 | 2653 | write_enn (own_buf); |
b2c04452 | 2654 | freeargv (new_argv); |
aef93bd7 | 2655 | return 0; |
1b3f6016 | 2656 | } |
2d717e4f | 2657 | } |
f142445f | 2658 | |
aef93bd7 DE |
2659 | /* Free the old argv and install the new one. */ |
2660 | freeargv (program_argv); | |
f142445f | 2661 | program_argv = new_argv; |
2d717e4f | 2662 | |
5b1c542e PA |
2663 | start_inferior (program_argv); |
2664 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
2d717e4f | 2665 | { |
5b1c542e | 2666 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
bd99dc85 PA |
2667 | |
2668 | /* In non-stop, sending a resume reply doesn't set the general | |
2669 | thread, but GDB assumes a vRun sets it (this is so GDB can | |
2670 | query which is the main thread of the new inferior. */ | |
2671 | if (non_stop) | |
2672 | general_thread = last_ptid; | |
2673 | ||
2d717e4f DJ |
2674 | return 1; |
2675 | } | |
2676 | else | |
2677 | { | |
2678 | write_enn (own_buf); | |
2679 | return 0; | |
2680 | } | |
2681 | } | |
2682 | ||
95954743 PA |
2683 | /* Kill process. Return 1 if successful, 0 if failure. */ |
2684 | int | |
2685 | handle_v_kill (char *own_buf) | |
2686 | { | |
2687 | int pid; | |
2688 | char *p = &own_buf[6]; | |
0f54c268 PM |
2689 | if (multi_process) |
2690 | pid = strtol (p, NULL, 16); | |
2691 | else | |
2692 | pid = signal_pid; | |
95954743 PA |
2693 | if (pid != 0 && kill_inferior (pid) == 0) |
2694 | { | |
2695 | last_status.kind = TARGET_WAITKIND_SIGNALLED; | |
a493e3e2 | 2696 | last_status.value.sig = GDB_SIGNAL_KILL; |
95954743 PA |
2697 | last_ptid = pid_to_ptid (pid); |
2698 | discard_queued_stop_replies (pid); | |
2699 | write_ok (own_buf); | |
2700 | return 1; | |
2701 | } | |
2702 | else | |
2703 | { | |
2704 | write_enn (own_buf); | |
2705 | return 0; | |
2706 | } | |
2707 | } | |
2708 | ||
64386c31 DJ |
2709 | /* Handle all of the extended 'v' packets. */ |
2710 | void | |
5b1c542e | 2711 | handle_v_requests (char *own_buf, int packet_len, int *new_packet_len) |
64386c31 | 2712 | { |
db42f210 | 2713 | if (!disable_packet_vCont) |
64386c31 | 2714 | { |
61012eef | 2715 | if (startswith (own_buf, "vCont;")) |
db42f210 PA |
2716 | { |
2717 | require_running (own_buf); | |
5b1c542e | 2718 | handle_v_cont (own_buf); |
db42f210 PA |
2719 | return; |
2720 | } | |
64386c31 | 2721 | |
61012eef | 2722 | if (startswith (own_buf, "vCont?")) |
db42f210 | 2723 | { |
bd99dc85 | 2724 | strcpy (own_buf, "vCont;c;C;s;S;t"); |
c2d6af84 PA |
2725 | if (target_supports_range_stepping ()) |
2726 | { | |
2727 | own_buf = own_buf + strlen (own_buf); | |
2728 | strcpy (own_buf, ";r"); | |
2729 | } | |
db42f210 PA |
2730 | return; |
2731 | } | |
64386c31 DJ |
2732 | } |
2733 | ||
61012eef | 2734 | if (startswith (own_buf, "vFile:") |
a6b151f1 DJ |
2735 | && handle_vFile (own_buf, packet_len, new_packet_len)) |
2736 | return; | |
2737 | ||
61012eef | 2738 | if (startswith (own_buf, "vAttach;")) |
2d717e4f | 2739 | { |
901f9912 | 2740 | if ((!extended_protocol || !multi_process) && target_running ()) |
2d717e4f | 2741 | { |
fd96d250 PA |
2742 | fprintf (stderr, "Already debugging a process\n"); |
2743 | write_enn (own_buf); | |
2744 | return; | |
2d717e4f | 2745 | } |
5b1c542e | 2746 | handle_v_attach (own_buf); |
2d717e4f DJ |
2747 | return; |
2748 | } | |
2749 | ||
61012eef | 2750 | if (startswith (own_buf, "vRun;")) |
2d717e4f | 2751 | { |
901f9912 | 2752 | if ((!extended_protocol || !multi_process) && target_running ()) |
2d717e4f | 2753 | { |
fd96d250 PA |
2754 | fprintf (stderr, "Already debugging a process\n"); |
2755 | write_enn (own_buf); | |
2756 | return; | |
2d717e4f | 2757 | } |
5b1c542e | 2758 | handle_v_run (own_buf); |
2d717e4f DJ |
2759 | return; |
2760 | } | |
2761 | ||
61012eef | 2762 | if (startswith (own_buf, "vKill;")) |
95954743 PA |
2763 | { |
2764 | if (!target_running ()) | |
2765 | { | |
2766 | fprintf (stderr, "No process to kill\n"); | |
2767 | write_enn (own_buf); | |
2768 | return; | |
2769 | } | |
2770 | handle_v_kill (own_buf); | |
2771 | return; | |
2772 | } | |
2773 | ||
14a00470 YQ |
2774 | if (handle_notif_ack (own_buf, packet_len)) |
2775 | return; | |
bd99dc85 | 2776 | |
64386c31 DJ |
2777 | /* Otherwise we didn't know what packet it was. Say we didn't |
2778 | understand it. */ | |
2779 | own_buf[0] = 0; | |
2780 | return; | |
2781 | } | |
2782 | ||
0bfdf32f | 2783 | /* Resume thread and wait for another event. In non-stop mode, |
bd99dc85 PA |
2784 | don't really wait here, but return immediatelly to the event |
2785 | loop. */ | |
1fd7cdc2 | 2786 | static void |
5b1c542e | 2787 | myresume (char *own_buf, int step, int sig) |
64386c31 DJ |
2788 | { |
2789 | struct thread_resume resume_info[2]; | |
2790 | int n = 0; | |
2bd7c093 | 2791 | int valid_cont_thread; |
a20d5e98 | 2792 | |
0bfdf32f | 2793 | set_desired_thread (0); |
64386c31 | 2794 | |
95954743 PA |
2795 | valid_cont_thread = (!ptid_equal (cont_thread, null_ptid) |
2796 | && !ptid_equal (cont_thread, minus_one_ptid)); | |
2bd7c093 PA |
2797 | |
2798 | if (step || sig || valid_cont_thread) | |
64386c31 | 2799 | { |
fbd5db48 | 2800 | resume_info[0].thread = current_ptid; |
bd99dc85 PA |
2801 | if (step) |
2802 | resume_info[0].kind = resume_step; | |
2803 | else | |
2804 | resume_info[0].kind = resume_continue; | |
64386c31 | 2805 | resume_info[0].sig = sig; |
64386c31 DJ |
2806 | n++; |
2807 | } | |
2bd7c093 PA |
2808 | |
2809 | if (!valid_cont_thread) | |
2810 | { | |
95954743 | 2811 | resume_info[n].thread = minus_one_ptid; |
bd99dc85 | 2812 | resume_info[n].kind = resume_continue; |
2bd7c093 PA |
2813 | resume_info[n].sig = 0; |
2814 | n++; | |
2815 | } | |
64386c31 | 2816 | |
b7ea362b | 2817 | resume (resume_info, n); |
bd99dc85 PA |
2818 | } |
2819 | ||
2820 | /* Callback for for_each_inferior. Make a new stop reply for each | |
2821 | stopped thread. */ | |
2822 | ||
95954743 PA |
2823 | static int |
2824 | queue_stop_reply_callback (struct inferior_list_entry *entry, void *arg) | |
bd99dc85 | 2825 | { |
8336d594 | 2826 | struct thread_info *thread = (struct thread_info *) entry; |
bd99dc85 | 2827 | |
8336d594 PA |
2828 | /* For now, assume targets that don't have this callback also don't |
2829 | manage the thread's last_status field. */ | |
2830 | if (the_target->thread_stopped == NULL) | |
95954743 | 2831 | { |
14a00470 YQ |
2832 | struct vstop_notif *new_notif = xmalloc (sizeof (*new_notif)); |
2833 | ||
2834 | new_notif->ptid = entry->id; | |
2835 | new_notif->status = thread->last_status; | |
8336d594 PA |
2836 | /* Pass the last stop reply back to GDB, but don't notify |
2837 | yet. */ | |
14a00470 YQ |
2838 | notif_event_enque (¬if_stop, |
2839 | (struct notif_event *) new_notif); | |
8336d594 PA |
2840 | } |
2841 | else | |
2842 | { | |
2843 | if (thread_stopped (thread)) | |
2844 | { | |
2845 | if (debug_threads) | |
3360c0bf LM |
2846 | { |
2847 | char *status_string | |
2848 | = target_waitstatus_to_string (&thread->last_status); | |
2849 | ||
87ce2a04 DE |
2850 | debug_printf ("Reporting thread %s as already stopped with %s\n", |
2851 | target_pid_to_str (entry->id), | |
2852 | status_string); | |
3360c0bf LM |
2853 | |
2854 | xfree (status_string); | |
2855 | } | |
8336d594 | 2856 | |
d20a8ad9 PA |
2857 | gdb_assert (thread->last_status.kind != TARGET_WAITKIND_IGNORE); |
2858 | ||
8336d594 PA |
2859 | /* Pass the last stop reply back to GDB, but don't notify |
2860 | yet. */ | |
2861 | queue_stop_reply (entry->id, &thread->last_status); | |
2862 | } | |
95954743 PA |
2863 | } |
2864 | ||
2865 | return 0; | |
64386c31 DJ |
2866 | } |
2867 | ||
ce1a5b52 PA |
2868 | /* Set this inferior threads's state as "want-stopped". We won't |
2869 | resume this thread until the client gives us another action for | |
2870 | it. */ | |
8336d594 PA |
2871 | |
2872 | static void | |
2873 | gdb_wants_thread_stopped (struct inferior_list_entry *entry) | |
2874 | { | |
2875 | struct thread_info *thread = (struct thread_info *) entry; | |
2876 | ||
2877 | thread->last_resume_kind = resume_stop; | |
2878 | ||
2879 | if (thread->last_status.kind == TARGET_WAITKIND_IGNORE) | |
2880 | { | |
ce1a5b52 PA |
2881 | /* Most threads are stopped implicitly (all-stop); tag that with |
2882 | signal 0. */ | |
8336d594 | 2883 | thread->last_status.kind = TARGET_WAITKIND_STOPPED; |
a493e3e2 | 2884 | thread->last_status.value.sig = GDB_SIGNAL_0; |
8336d594 PA |
2885 | } |
2886 | } | |
2887 | ||
2888 | /* Set all threads' states as "want-stopped". */ | |
2889 | ||
2890 | static void | |
2891 | gdb_wants_all_threads_stopped (void) | |
2892 | { | |
2893 | for_each_inferior (&all_threads, gdb_wants_thread_stopped); | |
2894 | } | |
2895 | ||
2896 | /* Clear the gdb_detached flag of every process. */ | |
2897 | ||
2898 | static void | |
2899 | gdb_reattached_process (struct inferior_list_entry *entry) | |
2900 | { | |
2901 | struct process_info *process = (struct process_info *) entry; | |
2902 | ||
2903 | process->gdb_detached = 0; | |
2904 | } | |
2905 | ||
b7ea362b PA |
2906 | /* Callback for for_each_inferior. Clear the thread's pending status |
2907 | flag. */ | |
2908 | ||
2909 | static void | |
2910 | clear_pending_status_callback (struct inferior_list_entry *entry) | |
2911 | { | |
2912 | struct thread_info *thread = (struct thread_info *) entry; | |
2913 | ||
2914 | thread->status_pending_p = 0; | |
2915 | } | |
2916 | ||
2917 | /* Callback for for_each_inferior. If the thread is stopped with an | |
2918 | interesting event, mark it as having a pending event. */ | |
2919 | ||
2920 | static void | |
2921 | set_pending_status_callback (struct inferior_list_entry *entry) | |
2922 | { | |
2923 | struct thread_info *thread = (struct thread_info *) entry; | |
2924 | ||
2925 | if (thread->last_status.kind != TARGET_WAITKIND_STOPPED | |
2926 | || (thread->last_status.value.sig != GDB_SIGNAL_0 | |
2927 | /* A breakpoint, watchpoint or finished step from a previous | |
2928 | GDB run isn't considered interesting for a new GDB run. | |
2929 | If we left those pending, the new GDB could consider them | |
2930 | random SIGTRAPs. This leaves out real async traps. We'd | |
2931 | have to peek into the (target-specific) siginfo to | |
2932 | distinguish those. */ | |
2933 | && thread->last_status.value.sig != GDB_SIGNAL_TRAP)) | |
2934 | thread->status_pending_p = 1; | |
2935 | } | |
2936 | ||
2937 | /* Callback for find_inferior. Return true if ENTRY (a thread) has a | |
2938 | pending status to report to GDB. */ | |
2939 | ||
2940 | static int | |
2941 | find_status_pending_thread_callback (struct inferior_list_entry *entry, void *data) | |
2942 | { | |
2943 | struct thread_info *thread = (struct thread_info *) entry; | |
2944 | ||
2945 | return thread->status_pending_p; | |
2946 | } | |
2947 | ||
5b1c542e PA |
2948 | /* Status handler for the '?' packet. */ |
2949 | ||
2950 | static void | |
2951 | handle_status (char *own_buf) | |
2952 | { | |
8336d594 PA |
2953 | /* GDB is connected, don't forward events to the target anymore. */ |
2954 | for_each_inferior (&all_processes, gdb_reattached_process); | |
bd99dc85 PA |
2955 | |
2956 | /* In non-stop mode, we must send a stop reply for each stopped | |
2957 | thread. In all-stop mode, just send one for the first stopped | |
2958 | thread we find. */ | |
2959 | ||
2960 | if (non_stop) | |
2961 | { | |
8336d594 | 2962 | find_inferior (&all_threads, queue_stop_reply_callback, NULL); |
bd99dc85 PA |
2963 | |
2964 | /* The first is sent immediatly. OK is sent if there is no | |
2965 | stopped thread, which is the same handling of the vStopped | |
2966 | packet (by design). */ | |
14a00470 | 2967 | notif_write_event (¬if_stop, own_buf); |
bd99dc85 | 2968 | } |
5b1c542e | 2969 | else |
bd99dc85 | 2970 | { |
b7ea362b PA |
2971 | struct inferior_list_entry *thread = NULL; |
2972 | ||
7984d532 | 2973 | pause_all (0); |
fa593d66 | 2974 | stabilize_threads (); |
8336d594 PA |
2975 | gdb_wants_all_threads_stopped (); |
2976 | ||
b7ea362b PA |
2977 | /* We can only report one status, but we might be coming out of |
2978 | non-stop -- if more than one thread is stopped with | |
2979 | interesting events, leave events for the threads we're not | |
2980 | reporting now pending. They'll be reported the next time the | |
2981 | threads are resumed. Start by marking all interesting events | |
2982 | as pending. */ | |
2983 | for_each_inferior (&all_threads, set_pending_status_callback); | |
2984 | ||
2985 | /* Prefer the last thread that reported an event to GDB (even if | |
2986 | that was a GDB_SIGNAL_TRAP). */ | |
2987 | if (last_status.kind != TARGET_WAITKIND_IGNORE | |
2988 | && last_status.kind != TARGET_WAITKIND_EXITED | |
2989 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
2990 | thread = find_inferior_id (&all_threads, last_ptid); | |
2991 | ||
2992 | /* If the last event thread is not found for some reason, look | |
2993 | for some other thread that might have an event to report. */ | |
2994 | if (thread == NULL) | |
2995 | thread = find_inferior (&all_threads, | |
2996 | find_status_pending_thread_callback, NULL); | |
2997 | ||
2998 | /* If we're still out of luck, simply pick the first thread in | |
2999 | the thread list. */ | |
3000 | if (thread == NULL) | |
649ebbca | 3001 | thread = get_first_inferior (&all_threads); |
b7ea362b PA |
3002 | |
3003 | if (thread != NULL) | |
8336d594 | 3004 | { |
b7ea362b PA |
3005 | struct thread_info *tp = (struct thread_info *) thread; |
3006 | ||
3007 | /* We're reporting this event, so it's no longer | |
3008 | pending. */ | |
3009 | tp->status_pending_p = 0; | |
3010 | ||
3011 | /* GDB assumes the current thread is the thread we're | |
3012 | reporting the status for. */ | |
3013 | general_thread = thread->id; | |
0bfdf32f | 3014 | set_desired_thread (1); |
8336d594 | 3015 | |
b7ea362b PA |
3016 | gdb_assert (tp->last_status.kind != TARGET_WAITKIND_IGNORE); |
3017 | prepare_resume_reply (own_buf, tp->entry.id, &tp->last_status); | |
8336d594 | 3018 | } |
bd99dc85 PA |
3019 | else |
3020 | strcpy (own_buf, "W00"); | |
3021 | } | |
5b1c542e PA |
3022 | } |
3023 | ||
dd24457d DJ |
3024 | static void |
3025 | gdbserver_version (void) | |
3026 | { | |
c16158bc | 3027 | printf ("GNU gdbserver %s%s\n" |
76f2b779 | 3028 | "Copyright (C) 2015 Free Software Foundation, Inc.\n" |
493e2a69 MS |
3029 | "gdbserver is free software, covered by the " |
3030 | "GNU General Public License.\n" | |
dd24457d | 3031 | "This gdbserver was configured as \"%s\"\n", |
c16158bc | 3032 | PKGVERSION, version, host_name); |
dd24457d DJ |
3033 | } |
3034 | ||
0bc68c49 | 3035 | static void |
c16158bc | 3036 | gdbserver_usage (FILE *stream) |
0bc68c49 | 3037 | { |
c16158bc JM |
3038 | fprintf (stream, "Usage:\tgdbserver [OPTIONS] COMM PROG [ARGS ...]\n" |
3039 | "\tgdbserver [OPTIONS] --attach COMM PID\n" | |
3040 | "\tgdbserver [OPTIONS] --multi COMM\n" | |
3041 | "\n" | |
41f98f02 PA |
3042 | "COMM may either be a tty device (for serial debugging),\n" |
3043 | "HOST:PORT to listen for a TCP connection, or '-' or 'stdio' to use \n" | |
3044 | "stdin/stdout of gdbserver.\n" | |
3045 | "PROG is the executable program. ARGS are arguments passed to inferior.\n" | |
3046 | "PID is the process ID to attach to, when --attach is specified.\n" | |
3047 | "\n" | |
3048 | "Operating modes:\n" | |
3049 | "\n" | |
3050 | " --attach Attach to running process PID.\n" | |
3051 | " --multi Start server without a specific program, and\n" | |
3052 | " only quit when explicitly commanded.\n" | |
3053 | " --once Exit after the first connection has closed.\n" | |
3054 | " --help Print this message and then exit.\n" | |
3055 | " --version Display version information and exit.\n" | |
3056 | "\n" | |
3057 | "Other options:\n" | |
3058 | "\n" | |
3059 | " --wrapper WRAPPER -- Run WRAPPER to start new programs.\n" | |
3060 | " --disable-randomization\n" | |
3061 | " Run PROG with address space randomization disabled.\n" | |
3062 | " --no-disable-randomization\n" | |
3063 | " Don't disable address space randomization when\n" | |
3064 | " starting PROG.\n" | |
3065 | "\n" | |
3066 | "Debug options:\n" | |
c16158bc | 3067 | "\n" |
62709adf | 3068 | " --debug Enable general debugging output.\n" |
87ce2a04 DE |
3069 | " --debug-format=opt1[,opt2,...]\n" |
3070 | " Specify extra content in debugging output.\n" | |
3071 | " Options:\n" | |
3072 | " all\n" | |
3073 | " none\n" | |
87ce2a04 | 3074 | " timestamp\n" |
62709adf | 3075 | " --remote-debug Enable remote protocol debugging output.\n" |
41f98f02 PA |
3076 | " --disable-packet=opt1[,opt2,...]\n" |
3077 | " Disable support for RSP packets or features.\n" | |
3078 | " Options:\n" | |
3079 | " vCont, Tthread, qC, qfThreadInfo and \n" | |
3080 | " threads (disable all threading packets).\n" | |
3081 | "\n" | |
3082 | "For more information, consult the GDB manual (available as on-line \n" | |
3083 | "info or a printed manual).\n"); | |
c16158bc JM |
3084 | if (REPORT_BUGS_TO[0] && stream == stdout) |
3085 | fprintf (stream, "Report bugs to \"%s\".\n", REPORT_BUGS_TO); | |
0bc68c49 DJ |
3086 | } |
3087 | ||
db42f210 PA |
3088 | static void |
3089 | gdbserver_show_disableable (FILE *stream) | |
3090 | { | |
3091 | fprintf (stream, "Disableable packets:\n" | |
3092 | " vCont \tAll vCont packets\n" | |
3093 | " qC \tQuerying the current thread\n" | |
3094 | " qfThreadInfo\tThread listing\n" | |
493e2a69 MS |
3095 | " Tthread \tPassing the thread specifier in the " |
3096 | "T stop reply packet\n" | |
db42f210 PA |
3097 | " threads \tAll of the above\n"); |
3098 | } | |
3099 | ||
3100 | ||
2d717e4f DJ |
3101 | #undef require_running |
3102 | #define require_running(BUF) \ | |
3103 | if (!target_running ()) \ | |
3104 | { \ | |
3105 | write_enn (BUF); \ | |
3106 | break; \ | |
3107 | } | |
3108 | ||
95954743 PA |
3109 | static int |
3110 | first_thread_of (struct inferior_list_entry *entry, void *args) | |
3111 | { | |
3112 | int pid = * (int *) args; | |
3113 | ||
3114 | if (ptid_get_pid (entry->id) == pid) | |
3115 | return 1; | |
3116 | ||
3117 | return 0; | |
3118 | } | |
3119 | ||
3120 | static void | |
3121 | kill_inferior_callback (struct inferior_list_entry *entry) | |
3122 | { | |
3123 | struct process_info *process = (struct process_info *) entry; | |
80894984 | 3124 | int pid = ptid_get_pid (process->entry.id); |
95954743 PA |
3125 | |
3126 | kill_inferior (pid); | |
3127 | discard_queued_stop_replies (pid); | |
3128 | } | |
3129 | ||
9f767825 DE |
3130 | /* Callback for for_each_inferior to detach or kill the inferior, |
3131 | depending on whether we attached to it or not. | |
3132 | We inform the user whether we're detaching or killing the process | |
3133 | as this is only called when gdbserver is about to exit. */ | |
3134 | ||
95954743 PA |
3135 | static void |
3136 | detach_or_kill_inferior_callback (struct inferior_list_entry *entry) | |
3137 | { | |
3138 | struct process_info *process = (struct process_info *) entry; | |
80894984 | 3139 | int pid = ptid_get_pid (process->entry.id); |
95954743 PA |
3140 | |
3141 | if (process->attached) | |
3142 | detach_inferior (pid); | |
3143 | else | |
3144 | kill_inferior (pid); | |
3145 | ||
3146 | discard_queued_stop_replies (pid); | |
3147 | } | |
3148 | ||
9f767825 DE |
3149 | /* for_each_inferior callback for detach_or_kill_for_exit to print |
3150 | the pids of started inferiors. */ | |
3151 | ||
3152 | static void | |
3153 | print_started_pid (struct inferior_list_entry *entry) | |
3154 | { | |
3155 | struct process_info *process = (struct process_info *) entry; | |
3156 | ||
3157 | if (! process->attached) | |
3158 | { | |
80894984 | 3159 | int pid = ptid_get_pid (process->entry.id); |
9f767825 DE |
3160 | fprintf (stderr, " %d", pid); |
3161 | } | |
3162 | } | |
3163 | ||
3164 | /* for_each_inferior callback for detach_or_kill_for_exit to print | |
3165 | the pids of attached inferiors. */ | |
3166 | ||
3167 | static void | |
3168 | print_attached_pid (struct inferior_list_entry *entry) | |
3169 | { | |
3170 | struct process_info *process = (struct process_info *) entry; | |
3171 | ||
3172 | if (process->attached) | |
3173 | { | |
80894984 | 3174 | int pid = ptid_get_pid (process->entry.id); |
9f767825 DE |
3175 | fprintf (stderr, " %d", pid); |
3176 | } | |
3177 | } | |
3178 | ||
3179 | /* Call this when exiting gdbserver with possible inferiors that need | |
3180 | to be killed or detached from. */ | |
3181 | ||
3182 | static void | |
3183 | detach_or_kill_for_exit (void) | |
3184 | { | |
3185 | /* First print a list of the inferiors we will be killing/detaching. | |
3186 | This is to assist the user, for example, in case the inferior unexpectedly | |
3187 | dies after we exit: did we screw up or did the inferior exit on its own? | |
3188 | Having this info will save some head-scratching. */ | |
3189 | ||
3190 | if (have_started_inferiors_p ()) | |
3191 | { | |
3192 | fprintf (stderr, "Killing process(es):"); | |
3193 | for_each_inferior (&all_processes, print_started_pid); | |
3194 | fprintf (stderr, "\n"); | |
3195 | } | |
3196 | if (have_attached_inferiors_p ()) | |
3197 | { | |
3198 | fprintf (stderr, "Detaching process(es):"); | |
3199 | for_each_inferior (&all_processes, print_attached_pid); | |
3200 | fprintf (stderr, "\n"); | |
3201 | } | |
3202 | ||
3203 | /* Now we can kill or detach the inferiors. */ | |
3204 | ||
3205 | for_each_inferior (&all_processes, detach_or_kill_inferior_callback); | |
3206 | } | |
3207 | ||
860789c7 GB |
3208 | /* Value that will be passed to exit(3) when gdbserver exits. */ |
3209 | static int exit_code; | |
3210 | ||
3211 | /* Cleanup version of detach_or_kill_for_exit. */ | |
3212 | ||
3213 | static void | |
3214 | detach_or_kill_for_exit_cleanup (void *ignore) | |
3215 | { | |
860789c7 | 3216 | |
492d29ea | 3217 | TRY |
860789c7 GB |
3218 | { |
3219 | detach_or_kill_for_exit (); | |
3220 | } | |
3221 | ||
492d29ea | 3222 | CATCH (exception, RETURN_MASK_ALL) |
860789c7 GB |
3223 | { |
3224 | fflush (stdout); | |
3225 | fprintf (stderr, "Detach or kill failed: %s\n", exception.message); | |
3226 | exit_code = 1; | |
3227 | } | |
492d29ea | 3228 | END_CATCH |
860789c7 GB |
3229 | } |
3230 | ||
3231 | /* Main function. This is called by the real "main" function, | |
3232 | wrapped in a TRY_CATCH that handles any uncaught exceptions. */ | |
3233 | ||
3234 | static void ATTRIBUTE_NORETURN | |
3235 | captured_main (int argc, char *argv[]) | |
c906108c | 3236 | { |
0729219d DJ |
3237 | int bad_attach; |
3238 | int pid; | |
2d717e4f DJ |
3239 | char *arg_end, *port; |
3240 | char **next_arg = &argv[1]; | |
89dc0afd JK |
3241 | volatile int multi_mode = 0; |
3242 | volatile int attach = 0; | |
2d717e4f | 3243 | int was_running; |
c906108c | 3244 | |
2d717e4f | 3245 | while (*next_arg != NULL && **next_arg == '-') |
dd24457d | 3246 | { |
2d717e4f DJ |
3247 | if (strcmp (*next_arg, "--version") == 0) |
3248 | { | |
3249 | gdbserver_version (); | |
3250 | exit (0); | |
3251 | } | |
3252 | else if (strcmp (*next_arg, "--help") == 0) | |
3253 | { | |
c16158bc | 3254 | gdbserver_usage (stdout); |
2d717e4f DJ |
3255 | exit (0); |
3256 | } | |
3257 | else if (strcmp (*next_arg, "--attach") == 0) | |
3258 | attach = 1; | |
3259 | else if (strcmp (*next_arg, "--multi") == 0) | |
3260 | multi_mode = 1; | |
ccd213ac DJ |
3261 | else if (strcmp (*next_arg, "--wrapper") == 0) |
3262 | { | |
3263 | next_arg++; | |
3264 | ||
3265 | wrapper_argv = next_arg; | |
3266 | while (*next_arg != NULL && strcmp (*next_arg, "--") != 0) | |
3267 | next_arg++; | |
3268 | ||
3269 | if (next_arg == wrapper_argv || *next_arg == NULL) | |
3270 | { | |
c16158bc | 3271 | gdbserver_usage (stderr); |
ccd213ac DJ |
3272 | exit (1); |
3273 | } | |
3274 | ||
3275 | /* Consume the "--". */ | |
3276 | *next_arg = NULL; | |
3277 | } | |
2d717e4f DJ |
3278 | else if (strcmp (*next_arg, "--debug") == 0) |
3279 | debug_threads = 1; | |
61012eef | 3280 | else if (startswith (*next_arg, "--debug-format=")) |
87ce2a04 DE |
3281 | { |
3282 | char *error_msg | |
3283 | = parse_debug_format_options ((*next_arg) | |
3284 | + sizeof ("--debug-format=") - 1, 0); | |
3285 | ||
3286 | if (error_msg != NULL) | |
3287 | { | |
3288 | fprintf (stderr, "%s", error_msg); | |
3289 | exit (1); | |
3290 | } | |
3291 | } | |
62709adf PA |
3292 | else if (strcmp (*next_arg, "--remote-debug") == 0) |
3293 | remote_debug = 1; | |
db42f210 PA |
3294 | else if (strcmp (*next_arg, "--disable-packet") == 0) |
3295 | { | |
3296 | gdbserver_show_disableable (stdout); | |
3297 | exit (0); | |
3298 | } | |
61012eef | 3299 | else if (startswith (*next_arg, "--disable-packet=")) |
db42f210 PA |
3300 | { |
3301 | char *packets, *tok; | |
3302 | ||
3303 | packets = *next_arg += sizeof ("--disable-packet=") - 1; | |
3304 | for (tok = strtok (packets, ","); | |
3305 | tok != NULL; | |
3306 | tok = strtok (NULL, ",")) | |
3307 | { | |
3308 | if (strcmp ("vCont", tok) == 0) | |
3309 | disable_packet_vCont = 1; | |
3310 | else if (strcmp ("Tthread", tok) == 0) | |
3311 | disable_packet_Tthread = 1; | |
3312 | else if (strcmp ("qC", tok) == 0) | |
3313 | disable_packet_qC = 1; | |
3314 | else if (strcmp ("qfThreadInfo", tok) == 0) | |
3315 | disable_packet_qfThreadInfo = 1; | |
3316 | else if (strcmp ("threads", tok) == 0) | |
3317 | { | |
3318 | disable_packet_vCont = 1; | |
3319 | disable_packet_Tthread = 1; | |
3320 | disable_packet_qC = 1; | |
3321 | disable_packet_qfThreadInfo = 1; | |
3322 | } | |
3323 | else | |
3324 | { | |
3325 | fprintf (stderr, "Don't know how to disable \"%s\".\n\n", | |
3326 | tok); | |
3327 | gdbserver_show_disableable (stderr); | |
3328 | exit (1); | |
3329 | } | |
3330 | } | |
3331 | } | |
e0f9f062 DE |
3332 | else if (strcmp (*next_arg, "-") == 0) |
3333 | { | |
3334 | /* "-" specifies a stdio connection and is a form of port | |
3335 | specification. */ | |
3336 | *next_arg = STDIO_CONNECTION_NAME; | |
3337 | break; | |
3338 | } | |
03583c20 UW |
3339 | else if (strcmp (*next_arg, "--disable-randomization") == 0) |
3340 | disable_randomization = 1; | |
3341 | else if (strcmp (*next_arg, "--no-disable-randomization") == 0) | |
3342 | disable_randomization = 0; | |
03f2bd59 JK |
3343 | else if (strcmp (*next_arg, "--once") == 0) |
3344 | run_once = 1; | |
2d717e4f DJ |
3345 | else |
3346 | { | |
3347 | fprintf (stderr, "Unknown argument: %s\n", *next_arg); | |
3348 | exit (1); | |
3349 | } | |
dd24457d | 3350 | |
2d717e4f DJ |
3351 | next_arg++; |
3352 | continue; | |
dd24457d DJ |
3353 | } |
3354 | ||
2d717e4f DJ |
3355 | port = *next_arg; |
3356 | next_arg++; | |
3357 | if (port == NULL || (!attach && !multi_mode && *next_arg == NULL)) | |
3358 | { | |
c16158bc | 3359 | gdbserver_usage (stderr); |
2d717e4f DJ |
3360 | exit (1); |
3361 | } | |
3362 | ||
602e3198 JK |
3363 | /* Remember stdio descriptors. LISTEN_DESC must not be listed, it will be |
3364 | opened by remote_prepare. */ | |
3365 | notice_open_fds (); | |
3366 | ||
e0f9f062 DE |
3367 | /* We need to know whether the remote connection is stdio before |
3368 | starting the inferior. Inferiors created in this scenario have | |
3369 | stdin,stdout redirected. So do this here before we call | |
3370 | start_inferior. */ | |
3371 | remote_prepare (port); | |
3372 | ||
0729219d DJ |
3373 | bad_attach = 0; |
3374 | pid = 0; | |
2d717e4f DJ |
3375 | |
3376 | /* --attach used to come after PORT, so allow it there for | |
3377 | compatibility. */ | |
3378 | if (*next_arg != NULL && strcmp (*next_arg, "--attach") == 0) | |
45b7b345 | 3379 | { |
2d717e4f DJ |
3380 | attach = 1; |
3381 | next_arg++; | |
45b7b345 DJ |
3382 | } |
3383 | ||
2d717e4f DJ |
3384 | if (attach |
3385 | && (*next_arg == NULL | |
3386 | || (*next_arg)[0] == '\0' | |
3387 | || (pid = strtoul (*next_arg, &arg_end, 0)) == 0 | |
3388 | || *arg_end != '\0' | |
3389 | || next_arg[1] != NULL)) | |
3390 | bad_attach = 1; | |
3391 | ||
3392 | if (bad_attach) | |
dd24457d | 3393 | { |
c16158bc | 3394 | gdbserver_usage (stderr); |
dd24457d DJ |
3395 | exit (1); |
3396 | } | |
c906108c | 3397 | |
a20d5e98 | 3398 | initialize_async_io (); |
4ce44c66 | 3399 | initialize_low (); |
60f662b0 | 3400 | initialize_event_loop (); |
219f2f23 PA |
3401 | if (target_supports_tracepoints ()) |
3402 | initialize_tracepoint (); | |
4ce44c66 | 3403 | |
bca929d3 DE |
3404 | own_buf = xmalloc (PBUFSIZ + 1); |
3405 | mem_buf = xmalloc (PBUFSIZ); | |
0a30fbc4 | 3406 | |
2d717e4f | 3407 | if (pid == 0 && *next_arg != NULL) |
45b7b345 | 3408 | { |
2d717e4f DJ |
3409 | int i, n; |
3410 | ||
3411 | n = argc - (next_arg - argv); | |
bca929d3 | 3412 | program_argv = xmalloc (sizeof (char *) * (n + 1)); |
2d717e4f | 3413 | for (i = 0; i < n; i++) |
bca929d3 | 3414 | program_argv[i] = xstrdup (next_arg[i]); |
2d717e4f DJ |
3415 | program_argv[i] = NULL; |
3416 | ||
45b7b345 | 3417 | /* Wait till we are at first instruction in program. */ |
5b1c542e | 3418 | start_inferior (program_argv); |
c906108c | 3419 | |
c588c53c MS |
3420 | /* We are now (hopefully) stopped at the first instruction of |
3421 | the target process. This assumes that the target process was | |
3422 | successfully created. */ | |
45b7b345 | 3423 | } |
2d717e4f DJ |
3424 | else if (pid != 0) |
3425 | { | |
5b1c542e | 3426 | if (attach_inferior (pid) == -1) |
2d717e4f DJ |
3427 | error ("Attaching not supported on this target"); |
3428 | ||
3429 | /* Otherwise succeeded. */ | |
3430 | } | |
45b7b345 DJ |
3431 | else |
3432 | { | |
5b1c542e PA |
3433 | last_status.kind = TARGET_WAITKIND_EXITED; |
3434 | last_status.value.integer = 0; | |
95954743 | 3435 | last_ptid = minus_one_ptid; |
45b7b345 | 3436 | } |
860789c7 | 3437 | make_cleanup (detach_or_kill_for_exit_cleanup, NULL); |
c906108c | 3438 | |
14a00470 YQ |
3439 | initialize_notif (); |
3440 | ||
311de423 PA |
3441 | /* Don't report shared library events on the initial connection, |
3442 | even if some libraries are preloaded. Avoids the "stopped by | |
3443 | shared library event" notice on gdb side. */ | |
3444 | dlls_changed = 0; | |
3445 | ||
5b1c542e PA |
3446 | if (last_status.kind == TARGET_WAITKIND_EXITED |
3447 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2d717e4f DJ |
3448 | was_running = 0; |
3449 | else | |
3450 | was_running = 1; | |
3451 | ||
3452 | if (!was_running && !multi_mode) | |
860789c7 | 3453 | error ("No program to debug"); |
c588c53c | 3454 | |
c906108c SS |
3455 | while (1) |
3456 | { | |
860789c7 | 3457 | |
a6f3e723 | 3458 | noack_mode = 0; |
95954743 | 3459 | multi_process = 0; |
8336d594 PA |
3460 | /* Be sure we're out of tfind mode. */ |
3461 | current_traceframe = -1; | |
40e91bc7 | 3462 | cont_thread = null_ptid; |
1ec68e26 PA |
3463 | swbreak_feature = 0; |
3464 | hwbreak_feature = 0; | |
bd99dc85 | 3465 | |
2d717e4f | 3466 | remote_open (port); |
c906108c | 3467 | |
492d29ea | 3468 | TRY |
2d717e4f | 3469 | { |
860789c7 GB |
3470 | /* Wait for events. This will return when all event sources |
3471 | are removed from the event loop. */ | |
3472 | start_event_loop (); | |
2d717e4f | 3473 | |
860789c7 GB |
3474 | /* If an exit was requested (using the "monitor exit" |
3475 | command), terminate now. The only other way to get | |
3476 | here is for getpkt to fail; close the connection | |
3477 | and reopen it at the top of the loop. */ | |
bd99dc85 | 3478 | |
860789c7 GB |
3479 | if (exit_requested || run_once) |
3480 | throw_quit ("Quit"); | |
bd99dc85 | 3481 | |
860789c7 GB |
3482 | fprintf (stderr, |
3483 | "Remote side has terminated connection. " | |
3484 | "GDBserver will reopen the connection.\n"); | |
8336d594 | 3485 | |
860789c7 GB |
3486 | /* Get rid of any pending statuses. An eventual reconnection |
3487 | (by the same GDB instance or another) will refresh all its | |
3488 | state from scratch. */ | |
3489 | discard_queued_stop_replies (-1); | |
3490 | for_each_inferior (&all_threads, | |
3491 | clear_pending_status_callback); | |
9939e131 | 3492 | |
860789c7 | 3493 | if (tracing) |
8336d594 | 3494 | { |
860789c7 | 3495 | if (disconnected_tracing) |
8336d594 | 3496 | { |
860789c7 GB |
3497 | /* Try to enable non-stop/async mode, so we we can |
3498 | both wait for an async socket accept, and handle | |
3499 | async target events simultaneously. There's also | |
3500 | no point either in having the target always stop | |
3501 | all threads, when we're going to pass signals | |
3502 | down without informing GDB. */ | |
3503 | if (!non_stop) | |
3504 | { | |
3505 | if (start_non_stop (1)) | |
3506 | non_stop = 1; | |
3507 | ||
3508 | /* Detaching implicitly resumes all threads; | |
3509 | simply disconnecting does not. */ | |
3510 | } | |
3511 | } | |
3512 | else | |
3513 | { | |
3514 | fprintf (stderr, | |
3515 | "Disconnected tracing disabled; " | |
3516 | "stopping trace run.\n"); | |
3517 | stop_tracing (); | |
8336d594 PA |
3518 | } |
3519 | } | |
860789c7 | 3520 | } |
492d29ea | 3521 | CATCH (exception, RETURN_MASK_ERROR) |
860789c7 GB |
3522 | { |
3523 | if (response_needed) | |
8336d594 | 3524 | { |
860789c7 GB |
3525 | write_enn (own_buf); |
3526 | putpkt (own_buf); | |
8336d594 PA |
3527 | } |
3528 | } | |
492d29ea | 3529 | END_CATCH |
bd99dc85 PA |
3530 | } |
3531 | } | |
01f9e8fa | 3532 | |
860789c7 GB |
3533 | /* Main function. */ |
3534 | ||
3535 | int | |
3536 | main (int argc, char *argv[]) | |
3537 | { | |
860789c7 | 3538 | |
492d29ea | 3539 | TRY |
860789c7 GB |
3540 | { |
3541 | captured_main (argc, argv); | |
3542 | } | |
492d29ea | 3543 | CATCH (exception, RETURN_MASK_ALL) |
860789c7 | 3544 | { |
492d29ea PA |
3545 | if (exception.reason == RETURN_ERROR) |
3546 | { | |
3547 | fflush (stdout); | |
3548 | fprintf (stderr, "%s\n", exception.message); | |
3549 | fprintf (stderr, "Exiting\n"); | |
3550 | exit_code = 1; | |
3551 | } | |
3552 | ||
3553 | exit (exit_code); | |
860789c7 | 3554 | } |
492d29ea | 3555 | END_CATCH |
860789c7 | 3556 | |
492d29ea | 3557 | gdb_assert_not_reached ("captured_main should never return"); |
860789c7 GB |
3558 | } |
3559 | ||
d708bcd1 PA |
3560 | /* Skip PACKET until the next semi-colon (or end of string). */ |
3561 | ||
3562 | static void | |
3563 | skip_to_semicolon (char **packet) | |
3564 | { | |
3565 | while (**packet != '\0' && **packet != ';') | |
3566 | (*packet)++; | |
3567 | } | |
3568 | ||
802e8e6d PA |
3569 | /* Process options coming from Z packets for a breakpoint. PACKET is |
3570 | the packet buffer. *PACKET is updated to point to the first char | |
3571 | after the last processed option. */ | |
9f3a5c85 LM |
3572 | |
3573 | static void | |
802e8e6d | 3574 | process_point_options (struct breakpoint *bp, char **packet) |
9f3a5c85 LM |
3575 | { |
3576 | char *dataptr = *packet; | |
d3ce09f5 | 3577 | int persist; |
9f3a5c85 LM |
3578 | |
3579 | /* Check if data has the correct format. */ | |
3580 | if (*dataptr != ';') | |
3581 | return; | |
3582 | ||
3583 | dataptr++; | |
3584 | ||
3585 | while (*dataptr) | |
3586 | { | |
d3ce09f5 SS |
3587 | if (*dataptr == ';') |
3588 | ++dataptr; | |
3589 | ||
3590 | if (*dataptr == 'X') | |
9f3a5c85 | 3591 | { |
d3ce09f5 | 3592 | /* Conditional expression. */ |
d171ca78 | 3593 | if (debug_threads) |
87ce2a04 | 3594 | debug_printf ("Found breakpoint condition.\n"); |
802e8e6d | 3595 | if (!add_breakpoint_condition (bp, &dataptr)) |
d708bcd1 | 3596 | skip_to_semicolon (&dataptr); |
d3ce09f5 | 3597 | } |
61012eef | 3598 | else if (startswith (dataptr, "cmds:")) |
d3ce09f5 SS |
3599 | { |
3600 | dataptr += strlen ("cmds:"); | |
3601 | if (debug_threads) | |
87ce2a04 | 3602 | debug_printf ("Found breakpoint commands %s.\n", dataptr); |
d3ce09f5 SS |
3603 | persist = (*dataptr == '1'); |
3604 | dataptr += 2; | |
802e8e6d | 3605 | if (add_breakpoint_commands (bp, &dataptr, persist)) |
d708bcd1 | 3606 | skip_to_semicolon (&dataptr); |
d3ce09f5 SS |
3607 | } |
3608 | else | |
3609 | { | |
d3ce09f5 SS |
3610 | fprintf (stderr, "Unknown token %c, ignoring.\n", |
3611 | *dataptr); | |
78a99e91 | 3612 | /* Skip tokens until we find one that we recognize. */ |
d708bcd1 | 3613 | skip_to_semicolon (&dataptr); |
9f3a5c85 | 3614 | } |
9f3a5c85 LM |
3615 | } |
3616 | *packet = dataptr; | |
3617 | } | |
3618 | ||
bd99dc85 PA |
3619 | /* Event loop callback that handles a serial event. The first byte in |
3620 | the serial buffer gets us here. We expect characters to arrive at | |
3621 | a brisk pace, so we read the rest of the packet with a blocking | |
3622 | getpkt call. */ | |
01f9e8fa | 3623 | |
8336d594 | 3624 | static int |
bd99dc85 PA |
3625 | process_serial_event (void) |
3626 | { | |
3627 | char ch; | |
3628 | int i = 0; | |
3629 | int signal; | |
3630 | unsigned int len; | |
764880b7 | 3631 | int res; |
bd99dc85 | 3632 | CORE_ADDR mem_addr; |
95954743 | 3633 | int pid; |
bd99dc85 PA |
3634 | unsigned char sig; |
3635 | int packet_len; | |
3636 | int new_packet_len = -1; | |
3637 | ||
3638 | /* Used to decide when gdbserver should exit in | |
3639 | multi-mode/remote. */ | |
3640 | static int have_ran = 0; | |
3641 | ||
3642 | if (!have_ran) | |
3643 | have_ran = target_running (); | |
3644 | ||
3645 | disable_async_io (); | |
3646 | ||
3647 | response_needed = 0; | |
3648 | packet_len = getpkt (own_buf); | |
3649 | if (packet_len <= 0) | |
3650 | { | |
bd99dc85 | 3651 | remote_close (); |
8336d594 PA |
3652 | /* Force an event loop break. */ |
3653 | return -1; | |
bd99dc85 PA |
3654 | } |
3655 | response_needed = 1; | |
3656 | ||
3657 | i = 0; | |
3658 | ch = own_buf[i++]; | |
3659 | switch (ch) | |
3660 | { | |
3661 | case 'q': | |
3662 | handle_query (own_buf, packet_len, &new_packet_len); | |
3663 | break; | |
3664 | case 'Q': | |
3665 | handle_general_set (own_buf); | |
3666 | break; | |
3667 | case 'D': | |
3668 | require_running (own_buf); | |
95954743 PA |
3669 | |
3670 | if (multi_process) | |
3671 | { | |
3672 | i++; /* skip ';' */ | |
3673 | pid = strtol (&own_buf[i], NULL, 16); | |
3674 | } | |
3675 | else | |
fbd5db48 | 3676 | pid = ptid_get_pid (current_ptid); |
95954743 | 3677 | |
d3ce09f5 | 3678 | if ((tracing && disconnected_tracing) || any_persistent_commands ()) |
8336d594 PA |
3679 | { |
3680 | struct thread_resume resume_info; | |
3681 | struct process_info *process = find_process_pid (pid); | |
3682 | ||
3683 | if (process == NULL) | |
3684 | { | |
3685 | write_enn (own_buf); | |
3686 | break; | |
3687 | } | |
3688 | ||
d3ce09f5 SS |
3689 | if (tracing && disconnected_tracing) |
3690 | fprintf (stderr, | |
3691 | "Disconnected tracing in effect, " | |
3692 | "leaving gdbserver attached to the process\n"); | |
3693 | ||
3694 | if (any_persistent_commands ()) | |
3695 | fprintf (stderr, | |
3696 | "Persistent commands are present, " | |
3697 | "leaving gdbserver attached to the process\n"); | |
8336d594 PA |
3698 | |
3699 | /* Make sure we're in non-stop/async mode, so we we can both | |
3700 | wait for an async socket accept, and handle async target | |
3701 | events simultaneously. There's also no point either in | |
3702 | having the target stop all threads, when we're going to | |
3703 | pass signals down without informing GDB. */ | |
3704 | if (!non_stop) | |
3705 | { | |
3706 | if (debug_threads) | |
87ce2a04 | 3707 | debug_printf ("Forcing non-stop mode\n"); |
8336d594 PA |
3708 | |
3709 | non_stop = 1; | |
3710 | start_non_stop (1); | |
3711 | } | |
3712 | ||
3713 | process->gdb_detached = 1; | |
3714 | ||
3715 | /* Detaching implicitly resumes all threads. */ | |
3716 | resume_info.thread = minus_one_ptid; | |
3717 | resume_info.kind = resume_continue; | |
3718 | resume_info.sig = 0; | |
3719 | (*the_target->resume) (&resume_info, 1); | |
3720 | ||
3721 | write_ok (own_buf); | |
3722 | break; /* from switch/case */ | |
3723 | } | |
3724 | ||
95954743 | 3725 | fprintf (stderr, "Detaching from process %d\n", pid); |
8336d594 | 3726 | stop_tracing (); |
95954743 | 3727 | if (detach_inferior (pid) != 0) |
bd99dc85 PA |
3728 | write_enn (own_buf); |
3729 | else | |
3730 | { | |
95954743 | 3731 | discard_queued_stop_replies (pid); |
bd99dc85 PA |
3732 | write_ok (own_buf); |
3733 | ||
3734 | if (extended_protocol) | |
c906108c | 3735 | { |
bd99dc85 PA |
3736 | /* Treat this like a normal program exit. */ |
3737 | last_status.kind = TARGET_WAITKIND_EXITED; | |
3738 | last_status.value.integer = 0; | |
95954743 | 3739 | last_ptid = pid_to_ptid (pid); |
2d717e4f | 3740 | |
0bfdf32f | 3741 | current_thread = NULL; |
bd99dc85 PA |
3742 | } |
3743 | else | |
3744 | { | |
3745 | putpkt (own_buf); | |
3746 | remote_close (); | |
3747 | ||
3748 | /* If we are attached, then we can exit. Otherwise, we | |
3749 | need to hang around doing nothing, until the child is | |
3750 | gone. */ | |
71f55dd8 | 3751 | join_inferior (pid); |
bd99dc85 PA |
3752 | exit (0); |
3753 | } | |
3754 | } | |
3755 | break; | |
3756 | case '!': | |
3757 | extended_protocol = 1; | |
3758 | write_ok (own_buf); | |
3759 | break; | |
3760 | case '?': | |
3761 | handle_status (own_buf); | |
3762 | break; | |
3763 | case 'H': | |
3764 | if (own_buf[1] == 'c' || own_buf[1] == 'g' || own_buf[1] == 's') | |
3765 | { | |
95954743 PA |
3766 | ptid_t gdb_id, thread_id; |
3767 | int pid; | |
bd99dc85 PA |
3768 | |
3769 | require_running (own_buf); | |
95954743 PA |
3770 | |
3771 | gdb_id = read_ptid (&own_buf[2], NULL); | |
3772 | ||
3773 | pid = ptid_get_pid (gdb_id); | |
3774 | ||
3775 | if (ptid_equal (gdb_id, null_ptid) | |
3776 | || ptid_equal (gdb_id, minus_one_ptid)) | |
3777 | thread_id = null_ptid; | |
3778 | else if (pid != 0 | |
3779 | && ptid_equal (pid_to_ptid (pid), | |
3780 | gdb_id)) | |
3781 | { | |
3782 | struct thread_info *thread = | |
3783 | (struct thread_info *) find_inferior (&all_threads, | |
3784 | first_thread_of, | |
3785 | &pid); | |
3786 | if (!thread) | |
3787 | { | |
3788 | write_enn (own_buf); | |
3789 | break; | |
3790 | } | |
3791 | ||
80894984 | 3792 | thread_id = thread->entry.id; |
95954743 | 3793 | } |
bd99dc85 PA |
3794 | else |
3795 | { | |
3796 | thread_id = gdb_id_to_thread_id (gdb_id); | |
95954743 | 3797 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 3798 | { |
a06660f7 | 3799 | write_enn (own_buf); |
c906108c SS |
3800 | break; |
3801 | } | |
c906108c SS |
3802 | } |
3803 | ||
bd99dc85 | 3804 | if (own_buf[1] == 'g') |
c906108c | 3805 | { |
95954743 | 3806 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 3807 | { |
bd99dc85 PA |
3808 | /* GDB is telling us to choose any thread. Check if |
3809 | the currently selected thread is still valid. If | |
3810 | it is not, select the first available. */ | |
3811 | struct thread_info *thread = | |
3812 | (struct thread_info *) find_inferior_id (&all_threads, | |
3813 | general_thread); | |
3814 | if (thread == NULL) | |
649ebbca DE |
3815 | { |
3816 | thread = get_first_thread (); | |
3817 | thread_id = thread->entry.id; | |
3818 | } | |
c906108c | 3819 | } |
bd99dc85 PA |
3820 | |
3821 | general_thread = thread_id; | |
0bfdf32f | 3822 | set_desired_thread (1); |
c906108c | 3823 | } |
bd99dc85 PA |
3824 | else if (own_buf[1] == 'c') |
3825 | cont_thread = thread_id; | |
c906108c | 3826 | |
bd99dc85 PA |
3827 | write_ok (own_buf); |
3828 | } | |
3829 | else | |
3830 | { | |
3831 | /* Silently ignore it so that gdb can extend the protocol | |
3832 | without compatibility headaches. */ | |
3833 | own_buf[0] = '\0'; | |
2d717e4f | 3834 | } |
bd99dc85 PA |
3835 | break; |
3836 | case 'g': | |
219f2f23 PA |
3837 | require_running (own_buf); |
3838 | if (current_traceframe >= 0) | |
3839 | { | |
3aee8918 PA |
3840 | struct regcache *regcache |
3841 | = new_register_cache (current_target_desc ()); | |
219f2f23 PA |
3842 | |
3843 | if (fetch_traceframe_registers (current_traceframe, | |
3844 | regcache, -1) == 0) | |
3845 | registers_to_string (regcache, own_buf); | |
3846 | else | |
3847 | write_enn (own_buf); | |
3848 | free_register_cache (regcache); | |
3849 | } | |
3850 | else | |
3851 | { | |
3852 | struct regcache *regcache; | |
3853 | ||
0bfdf32f GB |
3854 | set_desired_thread (1); |
3855 | regcache = get_thread_regcache (current_thread, 1); | |
219f2f23 PA |
3856 | registers_to_string (regcache, own_buf); |
3857 | } | |
bd99dc85 PA |
3858 | break; |
3859 | case 'G': | |
219f2f23 PA |
3860 | require_running (own_buf); |
3861 | if (current_traceframe >= 0) | |
3862 | write_enn (own_buf); | |
3863 | else | |
3864 | { | |
442ea881 PA |
3865 | struct regcache *regcache; |
3866 | ||
0bfdf32f GB |
3867 | set_desired_thread (1); |
3868 | regcache = get_thread_regcache (current_thread, 1); | |
442ea881 PA |
3869 | registers_from_string (regcache, &own_buf[1]); |
3870 | write_ok (own_buf); | |
3871 | } | |
bd99dc85 PA |
3872 | break; |
3873 | case 'm': | |
3874 | require_running (own_buf); | |
3875 | decode_m_packet (&own_buf[1], &mem_addr, &len); | |
764880b7 PA |
3876 | res = gdb_read_memory (mem_addr, mem_buf, len); |
3877 | if (res < 0) | |
bd99dc85 | 3878 | write_enn (own_buf); |
764880b7 | 3879 | else |
e9371aff | 3880 | bin2hex (mem_buf, own_buf, res); |
bd99dc85 PA |
3881 | break; |
3882 | case 'M': | |
3883 | require_running (own_buf); | |
fa593d66 | 3884 | decode_M_packet (&own_buf[1], &mem_addr, &len, &mem_buf); |
90d74c30 | 3885 | if (gdb_write_memory (mem_addr, mem_buf, len) == 0) |
bd99dc85 PA |
3886 | write_ok (own_buf); |
3887 | else | |
3888 | write_enn (own_buf); | |
3889 | break; | |
3890 | case 'X': | |
3891 | require_running (own_buf); | |
3892 | if (decode_X_packet (&own_buf[1], packet_len - 1, | |
fa593d66 | 3893 | &mem_addr, &len, &mem_buf) < 0 |
90d74c30 | 3894 | || gdb_write_memory (mem_addr, mem_buf, len) != 0) |
bd99dc85 PA |
3895 | write_enn (own_buf); |
3896 | else | |
3897 | write_ok (own_buf); | |
3898 | break; | |
3899 | case 'C': | |
3900 | require_running (own_buf); | |
a7191e8b | 3901 | hex2bin (own_buf + 1, &sig, 1); |
2ea28649 PA |
3902 | if (gdb_signal_to_host_p (sig)) |
3903 | signal = gdb_signal_to_host (sig); | |
bd99dc85 PA |
3904 | else |
3905 | signal = 0; | |
3906 | myresume (own_buf, 0, signal); | |
3907 | break; | |
3908 | case 'S': | |
3909 | require_running (own_buf); | |
a7191e8b | 3910 | hex2bin (own_buf + 1, &sig, 1); |
2ea28649 PA |
3911 | if (gdb_signal_to_host_p (sig)) |
3912 | signal = gdb_signal_to_host (sig); | |
bd99dc85 PA |
3913 | else |
3914 | signal = 0; | |
3915 | myresume (own_buf, 1, signal); | |
3916 | break; | |
3917 | case 'c': | |
3918 | require_running (own_buf); | |
3919 | signal = 0; | |
3920 | myresume (own_buf, 0, signal); | |
3921 | break; | |
3922 | case 's': | |
3923 | require_running (own_buf); | |
3924 | signal = 0; | |
3925 | myresume (own_buf, 1, signal); | |
3926 | break; | |
c6314022 AR |
3927 | case 'Z': /* insert_ ... */ |
3928 | /* Fallthrough. */ | |
3929 | case 'z': /* remove_ ... */ | |
bd99dc85 | 3930 | { |
bd99dc85 | 3931 | char *dataptr; |
aca22551 PA |
3932 | ULONGEST addr; |
3933 | int len; | |
bd99dc85 | 3934 | char type = own_buf[1]; |
c6314022 | 3935 | int res; |
d993e290 | 3936 | const int insert = ch == 'Z'; |
aca22551 PA |
3937 | char *p = &own_buf[3]; |
3938 | ||
3939 | p = unpack_varlen_hex (p, &addr); | |
3940 | len = strtol (p + 1, &dataptr, 16); | |
c6314022 | 3941 | |
802e8e6d | 3942 | if (insert) |
d993e290 | 3943 | { |
802e8e6d PA |
3944 | struct breakpoint *bp; |
3945 | ||
3946 | bp = set_gdb_breakpoint (type, addr, len, &res); | |
3947 | if (bp != NULL) | |
9f3a5c85 | 3948 | { |
802e8e6d PA |
3949 | res = 0; |
3950 | ||
3951 | /* GDB may have sent us a list of *point parameters to | |
3952 | be evaluated on the target's side. Read such list | |
3953 | here. If we already have a list of parameters, GDB | |
3954 | is telling us to drop that list and use this one | |
3955 | instead. */ | |
0a261ed8 | 3956 | clear_breakpoint_conditions_and_commands (bp); |
802e8e6d | 3957 | process_point_options (bp, &dataptr); |
9f3a5c85 | 3958 | } |
d993e290 | 3959 | } |
802e8e6d PA |
3960 | else |
3961 | res = delete_gdb_breakpoint (type, addr, len); | |
bd99dc85 | 3962 | |
c6314022 AR |
3963 | if (res == 0) |
3964 | write_ok (own_buf); | |
3965 | else if (res == 1) | |
3966 | /* Unsupported. */ | |
3967 | own_buf[0] = '\0'; | |
bd99dc85 | 3968 | else |
c6314022 | 3969 | write_enn (own_buf); |
bd99dc85 PA |
3970 | break; |
3971 | } | |
3972 | case 'k': | |
3973 | response_needed = 0; | |
3974 | if (!target_running ()) | |
95954743 PA |
3975 | /* The packet we received doesn't make sense - but we can't |
3976 | reply to it, either. */ | |
8336d594 | 3977 | return 0; |
c906108c | 3978 | |
95954743 PA |
3979 | fprintf (stderr, "Killing all inferiors\n"); |
3980 | for_each_inferior (&all_processes, kill_inferior_callback); | |
c906108c | 3981 | |
bd99dc85 PA |
3982 | /* When using the extended protocol, we wait with no program |
3983 | running. The traditional protocol will exit instead. */ | |
3984 | if (extended_protocol) | |
3985 | { | |
3986 | last_status.kind = TARGET_WAITKIND_EXITED; | |
a493e3e2 | 3987 | last_status.value.sig = GDB_SIGNAL_KILL; |
8336d594 | 3988 | return 0; |
bd99dc85 PA |
3989 | } |
3990 | else | |
8336d594 PA |
3991 | exit (0); |
3992 | ||
bd99dc85 PA |
3993 | case 'T': |
3994 | { | |
95954743 | 3995 | ptid_t gdb_id, thread_id; |
bd99dc85 PA |
3996 | |
3997 | require_running (own_buf); | |
95954743 PA |
3998 | |
3999 | gdb_id = read_ptid (&own_buf[1], NULL); | |
bd99dc85 | 4000 | thread_id = gdb_id_to_thread_id (gdb_id); |
95954743 | 4001 | if (ptid_equal (thread_id, null_ptid)) |
bd99dc85 PA |
4002 | { |
4003 | write_enn (own_buf); | |
4004 | break; | |
4005 | } | |
4006 | ||
4007 | if (mythread_alive (thread_id)) | |
4008 | write_ok (own_buf); | |
4009 | else | |
4010 | write_enn (own_buf); | |
4011 | } | |
4012 | break; | |
4013 | case 'R': | |
4014 | response_needed = 0; | |
4015 | ||
4016 | /* Restarting the inferior is only supported in the extended | |
4017 | protocol. */ | |
4018 | if (extended_protocol) | |
4019 | { | |
4020 | if (target_running ()) | |
95954743 PA |
4021 | for_each_inferior (&all_processes, |
4022 | kill_inferior_callback); | |
bd99dc85 PA |
4023 | fprintf (stderr, "GDBserver restarting\n"); |
4024 | ||
4025 | /* Wait till we are at 1st instruction in prog. */ | |
4026 | if (program_argv != NULL) | |
4027 | start_inferior (program_argv); | |
4028 | else | |
4029 | { | |
4030 | last_status.kind = TARGET_WAITKIND_EXITED; | |
a493e3e2 | 4031 | last_status.value.sig = GDB_SIGNAL_KILL; |
bd99dc85 | 4032 | } |
8336d594 | 4033 | return 0; |
c906108c SS |
4034 | } |
4035 | else | |
4036 | { | |
bd99dc85 PA |
4037 | /* It is a request we don't understand. Respond with an |
4038 | empty packet so that gdb knows that we don't support this | |
4039 | request. */ | |
4040 | own_buf[0] = '\0'; | |
4041 | break; | |
4042 | } | |
4043 | case 'v': | |
4044 | /* Extended (long) request. */ | |
4045 | handle_v_requests (own_buf, packet_len, &new_packet_len); | |
4046 | break; | |
4047 | ||
4048 | default: | |
4049 | /* It is a request we don't understand. Respond with an empty | |
4050 | packet so that gdb knows that we don't support this | |
4051 | request. */ | |
4052 | own_buf[0] = '\0'; | |
4053 | break; | |
4054 | } | |
4055 | ||
4056 | if (new_packet_len != -1) | |
4057 | putpkt_binary (own_buf, new_packet_len); | |
4058 | else | |
4059 | putpkt (own_buf); | |
4060 | ||
4061 | response_needed = 0; | |
4062 | ||
4063 | if (!extended_protocol && have_ran && !target_running ()) | |
4064 | { | |
4065 | /* In non-stop, defer exiting until GDB had a chance to query | |
4066 | the whole vStopped list (until it gets an OK). */ | |
14a00470 | 4067 | if (QUEUE_is_empty (notif_event_p, notif_stop.queue)) |
bd99dc85 | 4068 | { |
1a3d890b PA |
4069 | /* Be transparent when GDB is connected through stdio -- no |
4070 | need to spam GDB's console. */ | |
4071 | if (!remote_connection_is_stdio ()) | |
4072 | fprintf (stderr, "GDBserver exiting\n"); | |
c906108c | 4073 | remote_close (); |
bd99dc85 | 4074 | exit (0); |
c906108c SS |
4075 | } |
4076 | } | |
8336d594 PA |
4077 | |
4078 | if (exit_requested) | |
4079 | return -1; | |
4080 | ||
4081 | return 0; | |
c906108c | 4082 | } |
bd99dc85 PA |
4083 | |
4084 | /* Event-loop callback for serial events. */ | |
4085 | ||
8336d594 | 4086 | int |
bd99dc85 PA |
4087 | handle_serial_event (int err, gdb_client_data client_data) |
4088 | { | |
4089 | if (debug_threads) | |
87ce2a04 | 4090 | debug_printf ("handling possible serial event\n"); |
bd99dc85 PA |
4091 | |
4092 | /* Really handle it. */ | |
8336d594 PA |
4093 | if (process_serial_event () < 0) |
4094 | return -1; | |
bd99dc85 | 4095 | |
0bfdf32f | 4096 | /* Be sure to not change the selected thread behind GDB's back. |
bd99dc85 | 4097 | Important in the non-stop mode asynchronous protocol. */ |
0bfdf32f | 4098 | set_desired_thread (1); |
8336d594 PA |
4099 | |
4100 | return 0; | |
bd99dc85 PA |
4101 | } |
4102 | ||
4103 | /* Event-loop callback for target events. */ | |
4104 | ||
8336d594 | 4105 | int |
bd99dc85 PA |
4106 | handle_target_event (int err, gdb_client_data client_data) |
4107 | { | |
4108 | if (debug_threads) | |
87ce2a04 | 4109 | debug_printf ("handling possible target event\n"); |
bd99dc85 | 4110 | |
95954743 PA |
4111 | last_ptid = mywait (minus_one_ptid, &last_status, |
4112 | TARGET_WNOHANG, 1); | |
bd99dc85 | 4113 | |
fa96cb38 PA |
4114 | if (last_status.kind == TARGET_WAITKIND_NO_RESUMED) |
4115 | { | |
4116 | /* No RSP support for this yet. */ | |
4117 | } | |
4118 | else if (last_status.kind != TARGET_WAITKIND_IGNORE) | |
bd99dc85 | 4119 | { |
8336d594 PA |
4120 | int pid = ptid_get_pid (last_ptid); |
4121 | struct process_info *process = find_process_pid (pid); | |
4122 | int forward_event = !gdb_connected () || process->gdb_detached; | |
4123 | ||
4124 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
4125 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
f9e39928 PA |
4126 | { |
4127 | mark_breakpoints_out (process); | |
4128 | mourn_inferior (process); | |
4129 | } | |
ce1a5b52 | 4130 | else |
d20a8ad9 PA |
4131 | { |
4132 | /* We're reporting this thread as stopped. Update its | |
4133 | "want-stopped" state to what the client wants, until it | |
4134 | gets a new resume action. */ | |
0bfdf32f GB |
4135 | current_thread->last_resume_kind = resume_stop; |
4136 | current_thread->last_status = last_status; | |
d20a8ad9 | 4137 | } |
8336d594 PA |
4138 | |
4139 | if (forward_event) | |
4140 | { | |
4141 | if (!target_running ()) | |
4142 | { | |
4143 | /* The last process exited. We're done. */ | |
4144 | exit (0); | |
4145 | } | |
4146 | ||
4147 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
4148 | { | |
4149 | /* A thread stopped with a signal, but gdb isn't | |
4150 | connected to handle it. Pass it down to the | |
4151 | inferior, as if it wasn't being traced. */ | |
4152 | struct thread_resume resume_info; | |
4153 | ||
4154 | if (debug_threads) | |
87ce2a04 DE |
4155 | debug_printf ("GDB not connected; forwarding event %d for" |
4156 | " [%s]\n", | |
4157 | (int) last_status.kind, | |
4158 | target_pid_to_str (last_ptid)); | |
8336d594 PA |
4159 | |
4160 | resume_info.thread = last_ptid; | |
4161 | resume_info.kind = resume_continue; | |
2ea28649 | 4162 | resume_info.sig = gdb_signal_to_host (last_status.value.sig); |
8336d594 PA |
4163 | (*the_target->resume) (&resume_info, 1); |
4164 | } | |
4165 | else if (debug_threads) | |
87ce2a04 DE |
4166 | debug_printf ("GDB not connected; ignoring event %d for [%s]\n", |
4167 | (int) last_status.kind, | |
4168 | target_pid_to_str (last_ptid)); | |
8336d594 PA |
4169 | } |
4170 | else | |
4171 | { | |
14a00470 YQ |
4172 | struct vstop_notif *vstop_notif |
4173 | = xmalloc (sizeof (struct vstop_notif)); | |
4174 | ||
4175 | vstop_notif->status = last_status; | |
4176 | vstop_notif->ptid = last_ptid; | |
4177 | /* Push Stop notification. */ | |
4178 | notif_push (¬if_stop, | |
4179 | (struct notif_event *) vstop_notif); | |
8336d594 | 4180 | } |
bd99dc85 PA |
4181 | } |
4182 | ||
0bfdf32f | 4183 | /* Be sure to not change the selected thread behind GDB's back. |
bd99dc85 | 4184 | Important in the non-stop mode asynchronous protocol. */ |
0bfdf32f | 4185 | set_desired_thread (1); |
8336d594 PA |
4186 | |
4187 | return 0; | |
bd99dc85 | 4188 | } |