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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; |
89245bc0 DB |
60 | int report_fork_events; |
61 | int report_vfork_events; | |
bd99dc85 | 62 | int non_stop; |
1ec68e26 PA |
63 | int swbreak_feature; |
64 | int hwbreak_feature; | |
bd99dc85 | 65 | |
03583c20 UW |
66 | /* Whether we should attempt to disable the operating system's address |
67 | space randomization feature before starting an inferior. */ | |
68 | int disable_randomization = 1; | |
69 | ||
ccd213ac | 70 | static char **program_argv, **wrapper_argv; |
2d717e4f | 71 | |
a493e3e2 PA |
72 | int pass_signals[GDB_SIGNAL_LAST]; |
73 | int program_signals[GDB_SIGNAL_LAST]; | |
9b224c5e | 74 | int program_signals_p; |
89be2091 | 75 | |
a9fa9f7d DJ |
76 | /* The PID of the originally created or attached inferior. Used to |
77 | send signals to the process when GDB sends us an asynchronous interrupt | |
78 | (user hitting Control-C in the client), and to wait for the child to exit | |
79 | when no longer debugging it. */ | |
80 | ||
a1928bad | 81 | unsigned long signal_pid; |
a9fa9f7d | 82 | |
290fadea RS |
83 | #ifdef SIGTTOU |
84 | /* A file descriptor for the controlling terminal. */ | |
85 | int terminal_fd; | |
86 | ||
87 | /* TERMINAL_FD's original foreground group. */ | |
88 | pid_t old_foreground_pgrp; | |
89 | ||
90 | /* Hand back terminal ownership to the original foreground group. */ | |
91 | ||
92 | static void | |
93 | restore_old_foreground_pgrp (void) | |
94 | { | |
95 | tcsetpgrp (terminal_fd, old_foreground_pgrp); | |
96 | } | |
97 | #endif | |
98 | ||
ec56be1b PA |
99 | /* Set if you want to disable optional thread related packets support |
100 | in gdbserver, for the sake of testing GDB against stubs that don't | |
101 | support them. */ | |
102 | int disable_packet_vCont; | |
103 | int disable_packet_Tthread; | |
104 | int disable_packet_qC; | |
105 | int disable_packet_qfThreadInfo; | |
106 | ||
5b1c542e PA |
107 | /* Last status reported to GDB. */ |
108 | static struct target_waitstatus last_status; | |
95954743 | 109 | static ptid_t last_ptid; |
5b1c542e | 110 | |
bd99dc85 PA |
111 | static char *own_buf; |
112 | static unsigned char *mem_buf; | |
113 | ||
14a00470 YQ |
114 | /* A sub-class of 'struct notif_event' for stop, holding information |
115 | relative to a single stop reply. We keep a queue of these to | |
116 | push to GDB in non-stop mode. */ | |
117 | ||
bd99dc85 PA |
118 | struct vstop_notif |
119 | { | |
14a00470 | 120 | struct notif_event base; |
bd99dc85 PA |
121 | |
122 | /* Thread or process that got the event. */ | |
95954743 | 123 | ptid_t ptid; |
bd99dc85 PA |
124 | |
125 | /* Event info. */ | |
126 | struct target_waitstatus status; | |
127 | }; | |
128 | ||
f4abbc16 MM |
129 | /* The current btrace configuration. This is gdbserver's mirror of GDB's |
130 | btrace configuration. */ | |
131 | static struct btrace_config current_btrace_conf; | |
132 | ||
14a00470 | 133 | DEFINE_QUEUE_P (notif_event_p); |
bd99dc85 PA |
134 | |
135 | /* Put a stop reply to the stop reply queue. */ | |
136 | ||
137 | static void | |
95954743 | 138 | queue_stop_reply (ptid_t ptid, struct target_waitstatus *status) |
bd99dc85 | 139 | { |
14a00470 | 140 | struct vstop_notif *new_notif = xmalloc (sizeof (*new_notif)); |
bd99dc85 | 141 | |
bd99dc85 PA |
142 | new_notif->ptid = ptid; |
143 | new_notif->status = *status; | |
144 | ||
14a00470 | 145 | notif_event_enque (¬if_stop, (struct notif_event *) new_notif); |
bd99dc85 PA |
146 | } |
147 | ||
14a00470 YQ |
148 | static int |
149 | remove_all_on_match_pid (QUEUE (notif_event_p) *q, | |
150 | QUEUE_ITER (notif_event_p) *iter, | |
151 | struct notif_event *event, | |
152 | void *data) | |
bd99dc85 | 153 | { |
14a00470 | 154 | int *pid = data; |
d20a8ad9 | 155 | |
14a00470 YQ |
156 | if (*pid == -1 |
157 | || ptid_get_pid (((struct vstop_notif *) event)->ptid) == *pid) | |
bd99dc85 | 158 | { |
14a00470 YQ |
159 | if (q->free_func != NULL) |
160 | q->free_func (event); | |
161 | ||
162 | QUEUE_remove_elem (notif_event_p, q, iter); | |
bd99dc85 | 163 | } |
14a00470 YQ |
164 | |
165 | return 1; | |
bd99dc85 PA |
166 | } |
167 | ||
95954743 PA |
168 | /* Get rid of the currently pending stop replies for PID. If PID is |
169 | -1, then apply to all processes. */ | |
bd99dc85 PA |
170 | |
171 | static void | |
95954743 | 172 | discard_queued_stop_replies (int pid) |
bd99dc85 | 173 | { |
14a00470 YQ |
174 | QUEUE_iterate (notif_event_p, notif_stop.queue, |
175 | remove_all_on_match_pid, &pid); | |
bd99dc85 PA |
176 | } |
177 | ||
bd99dc85 | 178 | static void |
14a00470 | 179 | vstop_notif_reply (struct notif_event *event, char *own_buf) |
bd99dc85 | 180 | { |
14a00470 YQ |
181 | struct vstop_notif *vstop = (struct vstop_notif *) event; |
182 | ||
183 | prepare_resume_reply (own_buf, vstop->ptid, &vstop->status); | |
bd99dc85 PA |
184 | } |
185 | ||
14a00470 YQ |
186 | struct notif_server notif_stop = |
187 | { | |
188 | "vStopped", "Stop", NULL, vstop_notif_reply, | |
189 | }; | |
190 | ||
2d717e4f DJ |
191 | static int |
192 | target_running (void) | |
193 | { | |
649ebbca | 194 | return get_first_thread () != NULL; |
2d717e4f DJ |
195 | } |
196 | ||
fc620387 | 197 | static int |
5b1c542e | 198 | start_inferior (char **argv) |
c906108c | 199 | { |
ccd213ac | 200 | char **new_argv = argv; |
2d717e4f | 201 | |
ccd213ac DJ |
202 | if (wrapper_argv != NULL) |
203 | { | |
204 | int i, count = 1; | |
205 | ||
206 | for (i = 0; wrapper_argv[i] != NULL; i++) | |
207 | count++; | |
208 | for (i = 0; argv[i] != NULL; i++) | |
209 | count++; | |
210 | new_argv = alloca (sizeof (char *) * count); | |
211 | count = 0; | |
212 | for (i = 0; wrapper_argv[i] != NULL; i++) | |
213 | new_argv[count++] = wrapper_argv[i]; | |
214 | for (i = 0; argv[i] != NULL; i++) | |
215 | new_argv[count++] = argv[i]; | |
216 | new_argv[count] = NULL; | |
217 | } | |
218 | ||
65730243 DE |
219 | if (debug_threads) |
220 | { | |
221 | int i; | |
222 | for (i = 0; new_argv[i]; ++i) | |
87ce2a04 DE |
223 | debug_printf ("new_argv[%d] = \"%s\"\n", i, new_argv[i]); |
224 | debug_flush (); | |
65730243 DE |
225 | } |
226 | ||
b80864fb | 227 | #ifdef SIGTTOU |
a9fa9f7d DJ |
228 | signal (SIGTTOU, SIG_DFL); |
229 | signal (SIGTTIN, SIG_DFL); | |
b80864fb | 230 | #endif |
a9fa9f7d | 231 | |
ccd213ac | 232 | signal_pid = create_inferior (new_argv[0], new_argv); |
0d62e5e8 | 233 | |
c588c53c MS |
234 | /* FIXME: we don't actually know at this point that the create |
235 | actually succeeded. We won't know that until we wait. */ | |
a1928bad | 236 | fprintf (stderr, "Process %s created; pid = %ld\n", argv[0], |
a9fa9f7d | 237 | signal_pid); |
b80864fb | 238 | fflush (stderr); |
a9fa9f7d | 239 | |
b80864fb | 240 | #ifdef SIGTTOU |
a9fa9f7d DJ |
241 | signal (SIGTTOU, SIG_IGN); |
242 | signal (SIGTTIN, SIG_IGN); | |
290fadea RS |
243 | terminal_fd = fileno (stderr); |
244 | old_foreground_pgrp = tcgetpgrp (terminal_fd); | |
245 | tcsetpgrp (terminal_fd, signal_pid); | |
246 | atexit (restore_old_foreground_pgrp); | |
b80864fb | 247 | #endif |
c906108c | 248 | |
ccd213ac DJ |
249 | if (wrapper_argv != NULL) |
250 | { | |
251 | struct thread_resume resume_info; | |
ccd213ac | 252 | |
ee47b2f8 | 253 | memset (&resume_info, 0, sizeof (resume_info)); |
95954743 | 254 | resume_info.thread = pid_to_ptid (signal_pid); |
bd99dc85 | 255 | resume_info.kind = resume_continue; |
ccd213ac | 256 | resume_info.sig = 0; |
ccd213ac | 257 | |
06db92f0 | 258 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
bd99dc85 | 259 | |
5b1c542e PA |
260 | if (last_status.kind != TARGET_WAITKIND_STOPPED) |
261 | return signal_pid; | |
ccd213ac DJ |
262 | |
263 | do | |
264 | { | |
2bd7c093 | 265 | (*the_target->resume) (&resume_info, 1); |
ccd213ac | 266 | |
06db92f0 | 267 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
5b1c542e PA |
268 | if (last_status.kind != TARGET_WAITKIND_STOPPED) |
269 | return signal_pid; | |
d20a8ad9 | 270 | |
0bfdf32f GB |
271 | current_thread->last_resume_kind = resume_stop; |
272 | current_thread->last_status = last_status; | |
ccd213ac | 273 | } |
a493e3e2 | 274 | while (last_status.value.sig != GDB_SIGNAL_TRAP); |
ccd213ac | 275 | |
5b1c542e | 276 | return signal_pid; |
ccd213ac DJ |
277 | } |
278 | ||
5b1c542e PA |
279 | /* Wait till we are at 1st instruction in program, return new pid |
280 | (assuming success). */ | |
95954743 | 281 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
5b1c542e | 282 | |
d20a8ad9 PA |
283 | if (last_status.kind != TARGET_WAITKIND_EXITED |
284 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
285 | { | |
0bfdf32f GB |
286 | current_thread->last_resume_kind = resume_stop; |
287 | current_thread->last_status = last_status; | |
d20a8ad9 | 288 | } |
80ad801e PA |
289 | else |
290 | mourn_inferior (find_process_pid (ptid_get_pid (last_ptid))); | |
d20a8ad9 | 291 | |
5b1c542e | 292 | return signal_pid; |
c906108c SS |
293 | } |
294 | ||
45b7b345 | 295 | static int |
5b1c542e | 296 | attach_inferior (int pid) |
45b7b345 DJ |
297 | { |
298 | /* myattach should return -1 if attaching is unsupported, | |
299 | 0 if it succeeded, and call error() otherwise. */ | |
a9fa9f7d | 300 | |
45b7b345 DJ |
301 | if (myattach (pid) != 0) |
302 | return -1; | |
303 | ||
6910d122 | 304 | fprintf (stderr, "Attached; pid = %d\n", pid); |
b80864fb | 305 | fflush (stderr); |
6910d122 | 306 | |
a9fa9f7d DJ |
307 | /* FIXME - It may be that we should get the SIGNAL_PID from the |
308 | attach function, so that it can be the main thread instead of | |
309 | whichever we were told to attach to. */ | |
310 | signal_pid = pid; | |
311 | ||
bd99dc85 PA |
312 | if (!non_stop) |
313 | { | |
95954743 | 314 | last_ptid = mywait (pid_to_ptid (pid), &last_status, 0, 0); |
bd99dc85 PA |
315 | |
316 | /* GDB knows to ignore the first SIGSTOP after attaching to a running | |
317 | process using the "attach" command, but this is different; it's | |
318 | just using "target remote". Pretend it's just starting up. */ | |
319 | if (last_status.kind == TARGET_WAITKIND_STOPPED | |
a493e3e2 PA |
320 | && last_status.value.sig == GDB_SIGNAL_STOP) |
321 | last_status.value.sig = GDB_SIGNAL_TRAP; | |
d20a8ad9 | 322 | |
0bfdf32f GB |
323 | current_thread->last_resume_kind = resume_stop; |
324 | current_thread->last_status = last_status; | |
bd99dc85 | 325 | } |
9db87ebd | 326 | |
45b7b345 DJ |
327 | return 0; |
328 | } | |
329 | ||
c906108c | 330 | extern int remote_debug; |
ce3a066d | 331 | |
0876f84a DJ |
332 | /* Decode a qXfer read request. Return 0 if everything looks OK, |
333 | or -1 otherwise. */ | |
334 | ||
335 | static int | |
d08aafef | 336 | decode_xfer_read (char *buf, CORE_ADDR *ofs, unsigned int *len) |
0876f84a | 337 | { |
d08aafef PA |
338 | /* After the read marker and annex, qXfer looks like a |
339 | traditional 'm' packet. */ | |
340 | decode_m_packet (buf, ofs, len); | |
341 | ||
342 | return 0; | |
343 | } | |
344 | ||
345 | static int | |
346 | decode_xfer (char *buf, char **object, char **rw, char **annex, char **offset) | |
347 | { | |
348 | /* Extract and NUL-terminate the object. */ | |
349 | *object = buf; | |
350 | while (*buf && *buf != ':') | |
351 | buf++; | |
352 | if (*buf == '\0') | |
353 | return -1; | |
354 | *buf++ = 0; | |
355 | ||
356 | /* Extract and NUL-terminate the read/write action. */ | |
357 | *rw = buf; | |
358 | while (*buf && *buf != ':') | |
359 | buf++; | |
360 | if (*buf == '\0') | |
361 | return -1; | |
362 | *buf++ = 0; | |
363 | ||
0876f84a DJ |
364 | /* Extract and NUL-terminate the annex. */ |
365 | *annex = buf; | |
366 | while (*buf && *buf != ':') | |
367 | buf++; | |
368 | if (*buf == '\0') | |
369 | return -1; | |
370 | *buf++ = 0; | |
371 | ||
d08aafef | 372 | *offset = buf; |
0876f84a DJ |
373 | return 0; |
374 | } | |
375 | ||
376 | /* Write the response to a successful qXfer read. Returns the | |
377 | length of the (binary) data stored in BUF, corresponding | |
378 | to as much of DATA/LEN as we could fit. IS_MORE controls | |
379 | the first character of the response. */ | |
380 | static int | |
23181151 | 381 | write_qxfer_response (char *buf, const void *data, int len, int is_more) |
0876f84a DJ |
382 | { |
383 | int out_len; | |
384 | ||
385 | if (is_more) | |
386 | buf[0] = 'm'; | |
387 | else | |
388 | buf[0] = 'l'; | |
389 | ||
390 | return remote_escape_output (data, len, (unsigned char *) buf + 1, &out_len, | |
391 | PBUFSIZ - 2) + 1; | |
392 | } | |
393 | ||
f4abbc16 | 394 | /* Handle btrace enabling in BTS format. */ |
9accd112 MM |
395 | |
396 | static const char * | |
f4abbc16 | 397 | handle_btrace_enable_bts (struct thread_info *thread) |
9accd112 MM |
398 | { |
399 | if (thread->btrace != NULL) | |
400 | return "E.Btrace already enabled."; | |
401 | ||
f4abbc16 MM |
402 | current_btrace_conf.format = BTRACE_FORMAT_BTS; |
403 | thread->btrace = target_enable_btrace (thread->entry.id, | |
404 | ¤t_btrace_conf); | |
9accd112 MM |
405 | if (thread->btrace == NULL) |
406 | return "E.Could not enable btrace."; | |
407 | ||
408 | return NULL; | |
409 | } | |
410 | ||
411 | /* Handle btrace disabling. */ | |
412 | ||
413 | static const char * | |
414 | handle_btrace_disable (struct thread_info *thread) | |
415 | { | |
416 | ||
417 | if (thread->btrace == NULL) | |
418 | return "E.Branch tracing not enabled."; | |
419 | ||
420 | if (target_disable_btrace (thread->btrace) != 0) | |
421 | return "E.Could not disable branch tracing."; | |
422 | ||
423 | thread->btrace = NULL; | |
424 | return NULL; | |
425 | } | |
426 | ||
427 | /* Handle the "Qbtrace" packet. */ | |
428 | ||
429 | static int | |
430 | handle_btrace_general_set (char *own_buf) | |
431 | { | |
432 | struct thread_info *thread; | |
433 | const char *err; | |
434 | char *op; | |
435 | ||
61012eef | 436 | if (!startswith (own_buf, "Qbtrace:")) |
9accd112 MM |
437 | return 0; |
438 | ||
439 | op = own_buf + strlen ("Qbtrace:"); | |
440 | ||
9accd112 MM |
441 | if (ptid_equal (general_thread, null_ptid) |
442 | || ptid_equal (general_thread, minus_one_ptid)) | |
443 | { | |
444 | strcpy (own_buf, "E.Must select a single thread."); | |
445 | return -1; | |
446 | } | |
447 | ||
448 | thread = find_thread_ptid (general_thread); | |
449 | if (thread == NULL) | |
450 | { | |
451 | strcpy (own_buf, "E.No such thread."); | |
452 | return -1; | |
453 | } | |
454 | ||
455 | err = NULL; | |
456 | ||
457 | if (strcmp (op, "bts") == 0) | |
f4abbc16 | 458 | err = handle_btrace_enable_bts (thread); |
9accd112 MM |
459 | else if (strcmp (op, "off") == 0) |
460 | err = handle_btrace_disable (thread); | |
461 | else | |
462 | err = "E.Bad Qbtrace operation. Use bts or off."; | |
463 | ||
464 | if (err != 0) | |
465 | strcpy (own_buf, err); | |
466 | else | |
467 | write_ok (own_buf); | |
468 | ||
469 | return 1; | |
470 | } | |
471 | ||
d33501a5 MM |
472 | /* Handle the "Qbtrace-conf" packet. */ |
473 | ||
474 | static int | |
475 | handle_btrace_conf_general_set (char *own_buf) | |
476 | { | |
477 | struct thread_info *thread; | |
478 | char *op; | |
479 | ||
61012eef | 480 | if (!startswith (own_buf, "Qbtrace-conf:")) |
d33501a5 MM |
481 | return 0; |
482 | ||
483 | op = own_buf + strlen ("Qbtrace-conf:"); | |
484 | ||
485 | if (ptid_equal (general_thread, null_ptid) | |
486 | || ptid_equal (general_thread, minus_one_ptid)) | |
487 | { | |
488 | strcpy (own_buf, "E.Must select a single thread."); | |
489 | return -1; | |
490 | } | |
491 | ||
492 | thread = find_thread_ptid (general_thread); | |
493 | if (thread == NULL) | |
494 | { | |
495 | strcpy (own_buf, "E.No such thread."); | |
496 | return -1; | |
497 | } | |
498 | ||
61012eef | 499 | if (startswith (op, "bts:size=")) |
d33501a5 MM |
500 | { |
501 | unsigned long size; | |
502 | char *endp = NULL; | |
503 | ||
504 | errno = 0; | |
505 | size = strtoul (op + strlen ("bts:size="), &endp, 16); | |
506 | if (endp == NULL || *endp != 0 || errno != 0 || size > UINT_MAX) | |
507 | { | |
508 | strcpy (own_buf, "E.Bad size value."); | |
509 | return -1; | |
510 | } | |
511 | ||
512 | current_btrace_conf.bts.size = (unsigned int) size; | |
513 | } | |
514 | else | |
515 | { | |
516 | strcpy (own_buf, "E.Bad Qbtrace configuration option."); | |
517 | return -1; | |
518 | } | |
519 | ||
520 | write_ok (own_buf); | |
521 | return 1; | |
522 | } | |
523 | ||
89be2091 | 524 | /* Handle all of the extended 'Q' packets. */ |
ae1ada35 DE |
525 | |
526 | static void | |
89be2091 DJ |
527 | handle_general_set (char *own_buf) |
528 | { | |
61012eef | 529 | if (startswith (own_buf, "QPassSignals:")) |
89be2091 | 530 | { |
a493e3e2 | 531 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
89be2091 DJ |
532 | const char *p = own_buf + strlen ("QPassSignals:"); |
533 | CORE_ADDR cursig; | |
534 | ||
535 | p = decode_address_to_semicolon (&cursig, p); | |
536 | for (i = 0; i < numsigs; i++) | |
537 | { | |
538 | if (i == cursig) | |
539 | { | |
540 | pass_signals[i] = 1; | |
541 | if (*p == '\0') | |
542 | /* Keep looping, to clear the remaining signals. */ | |
543 | cursig = -1; | |
544 | else | |
545 | p = decode_address_to_semicolon (&cursig, p); | |
546 | } | |
547 | else | |
548 | pass_signals[i] = 0; | |
549 | } | |
550 | strcpy (own_buf, "OK"); | |
551 | return; | |
552 | } | |
553 | ||
61012eef | 554 | if (startswith (own_buf, "QProgramSignals:")) |
9b224c5e | 555 | { |
a493e3e2 | 556 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
9b224c5e PA |
557 | const char *p = own_buf + strlen ("QProgramSignals:"); |
558 | CORE_ADDR cursig; | |
559 | ||
560 | program_signals_p = 1; | |
561 | ||
562 | p = decode_address_to_semicolon (&cursig, p); | |
563 | for (i = 0; i < numsigs; i++) | |
564 | { | |
565 | if (i == cursig) | |
566 | { | |
567 | program_signals[i] = 1; | |
568 | if (*p == '\0') | |
569 | /* Keep looping, to clear the remaining signals. */ | |
570 | cursig = -1; | |
571 | else | |
572 | p = decode_address_to_semicolon (&cursig, p); | |
573 | } | |
574 | else | |
575 | program_signals[i] = 0; | |
576 | } | |
577 | strcpy (own_buf, "OK"); | |
578 | return; | |
579 | } | |
580 | ||
a6f3e723 SL |
581 | if (strcmp (own_buf, "QStartNoAckMode") == 0) |
582 | { | |
583 | if (remote_debug) | |
584 | { | |
585 | fprintf (stderr, "[noack mode enabled]\n"); | |
586 | fflush (stderr); | |
587 | } | |
588 | ||
589 | noack_mode = 1; | |
590 | write_ok (own_buf); | |
591 | return; | |
592 | } | |
593 | ||
61012eef | 594 | if (startswith (own_buf, "QNonStop:")) |
bd99dc85 PA |
595 | { |
596 | char *mode = own_buf + 9; | |
597 | int req = -1; | |
b2333d22 | 598 | const char *req_str; |
bd99dc85 PA |
599 | |
600 | if (strcmp (mode, "0") == 0) | |
601 | req = 0; | |
602 | else if (strcmp (mode, "1") == 0) | |
603 | req = 1; | |
604 | else | |
605 | { | |
606 | /* We don't know what this mode is, so complain to | |
607 | GDB. */ | |
608 | fprintf (stderr, "Unknown non-stop mode requested: %s\n", | |
609 | own_buf); | |
610 | write_enn (own_buf); | |
611 | return; | |
612 | } | |
613 | ||
614 | req_str = req ? "non-stop" : "all-stop"; | |
615 | if (start_non_stop (req) != 0) | |
616 | { | |
617 | fprintf (stderr, "Setting %s mode failed\n", req_str); | |
618 | write_enn (own_buf); | |
619 | return; | |
620 | } | |
621 | ||
622 | non_stop = req; | |
623 | ||
624 | if (remote_debug) | |
625 | fprintf (stderr, "[%s mode enabled]\n", req_str); | |
626 | ||
627 | write_ok (own_buf); | |
628 | return; | |
629 | } | |
630 | ||
61012eef | 631 | if (startswith (own_buf, "QDisableRandomization:")) |
03583c20 UW |
632 | { |
633 | char *packet = own_buf + strlen ("QDisableRandomization:"); | |
634 | ULONGEST setting; | |
635 | ||
636 | unpack_varlen_hex (packet, &setting); | |
637 | disable_randomization = setting; | |
638 | ||
639 | if (remote_debug) | |
640 | { | |
641 | if (disable_randomization) | |
642 | fprintf (stderr, "[address space randomization disabled]\n"); | |
643 | else | |
644 | fprintf (stderr, "[address space randomization enabled]\n"); | |
645 | } | |
646 | ||
647 | write_ok (own_buf); | |
648 | return; | |
649 | } | |
650 | ||
219f2f23 PA |
651 | if (target_supports_tracepoints () |
652 | && handle_tracepoint_general_set (own_buf)) | |
653 | return; | |
654 | ||
61012eef | 655 | if (startswith (own_buf, "QAgent:")) |
d1feda86 YQ |
656 | { |
657 | char *mode = own_buf + strlen ("QAgent:"); | |
658 | int req = 0; | |
659 | ||
660 | if (strcmp (mode, "0") == 0) | |
661 | req = 0; | |
662 | else if (strcmp (mode, "1") == 0) | |
663 | req = 1; | |
664 | else | |
665 | { | |
666 | /* We don't know what this value is, so complain to GDB. */ | |
667 | sprintf (own_buf, "E.Unknown QAgent value"); | |
668 | return; | |
669 | } | |
670 | ||
671 | /* Update the flag. */ | |
672 | use_agent = req; | |
673 | if (remote_debug) | |
674 | fprintf (stderr, "[%s agent]\n", req ? "Enable" : "Disable"); | |
675 | write_ok (own_buf); | |
676 | return; | |
677 | } | |
678 | ||
9accd112 MM |
679 | if (handle_btrace_general_set (own_buf)) |
680 | return; | |
681 | ||
d33501a5 MM |
682 | if (handle_btrace_conf_general_set (own_buf)) |
683 | return; | |
684 | ||
89be2091 DJ |
685 | /* Otherwise we didn't know what packet it was. Say we didn't |
686 | understand it. */ | |
687 | own_buf[0] = 0; | |
688 | } | |
689 | ||
23181151 | 690 | static const char * |
fb1e4ffc | 691 | get_features_xml (const char *annex) |
23181151 | 692 | { |
3aee8918 PA |
693 | const struct target_desc *desc = current_target_desc (); |
694 | ||
695 | /* `desc->xmltarget' defines what to return when looking for the | |
696 | "target.xml" file. Its contents can either be verbatim XML code | |
697 | (prefixed with a '@') or else the name of the actual XML file to | |
698 | be used in place of "target.xml". | |
fb1e4ffc | 699 | |
9b4b61c8 UW |
700 | This variable is set up from the auto-generated |
701 | init_registers_... routine for the current target. */ | |
fb1e4ffc | 702 | |
3aee8918 | 703 | if (desc->xmltarget != NULL && strcmp (annex, "target.xml") == 0) |
23181151 | 704 | { |
3aee8918 PA |
705 | if (*desc->xmltarget == '@') |
706 | return desc->xmltarget + 1; | |
23181151 | 707 | else |
3aee8918 | 708 | annex = desc->xmltarget; |
23181151 DJ |
709 | } |
710 | ||
9b4b61c8 UW |
711 | #ifdef USE_XML |
712 | { | |
713 | extern const char *const xml_builtin[][2]; | |
714 | int i; | |
715 | ||
716 | /* Look for the annex. */ | |
717 | for (i = 0; xml_builtin[i][0] != NULL; i++) | |
718 | if (strcmp (annex, xml_builtin[i][0]) == 0) | |
719 | break; | |
720 | ||
721 | if (xml_builtin[i][0] != NULL) | |
722 | return xml_builtin[i][1]; | |
723 | } | |
724 | #endif | |
725 | ||
726 | return NULL; | |
23181151 DJ |
727 | } |
728 | ||
c74d0ad8 DJ |
729 | void |
730 | monitor_show_help (void) | |
731 | { | |
732 | monitor_output ("The following monitor commands are supported:\n"); | |
733 | monitor_output (" set debug <0|1>\n"); | |
1b3f6016 | 734 | monitor_output (" Enable general debugging messages\n"); |
aa5ca48f DE |
735 | monitor_output (" set debug-hw-points <0|1>\n"); |
736 | monitor_output (" Enable h/w breakpoint/watchpoint debugging messages\n"); | |
c74d0ad8 DJ |
737 | monitor_output (" set remote-debug <0|1>\n"); |
738 | monitor_output (" Enable remote protocol debugging messages\n"); | |
87ce2a04 DE |
739 | monitor_output (" set debug-format option1[,option2,...]\n"); |
740 | monitor_output (" Add additional information to debugging messages\n"); | |
741 | monitor_output (" Options: all, none"); | |
87ce2a04 | 742 | monitor_output (", timestamp"); |
87ce2a04 | 743 | monitor_output ("\n"); |
ecd7ecbc DJ |
744 | monitor_output (" exit\n"); |
745 | monitor_output (" Quit GDBserver\n"); | |
c74d0ad8 DJ |
746 | } |
747 | ||
764880b7 PA |
748 | /* Read trace frame or inferior memory. Returns the number of bytes |
749 | actually read, zero when no further transfer is possible, and -1 on | |
750 | error. Return of a positive value smaller than LEN does not | |
751 | indicate there's no more to be read, only the end of the transfer. | |
752 | E.g., when GDB reads memory from a traceframe, a first request may | |
753 | be served from a memory block that does not cover the whole request | |
754 | length. A following request gets the rest served from either | |
755 | another block (of the same traceframe) or from the read-only | |
756 | regions. */ | |
219f2f23 PA |
757 | |
758 | static int | |
90d74c30 | 759 | gdb_read_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) |
219f2f23 | 760 | { |
764880b7 | 761 | int res; |
90d74c30 | 762 | |
219f2f23 PA |
763 | if (current_traceframe >= 0) |
764 | { | |
765 | ULONGEST nbytes; | |
766 | ULONGEST length = len; | |
767 | ||
768 | if (traceframe_read_mem (current_traceframe, | |
769 | memaddr, myaddr, len, &nbytes)) | |
9a13b2fa | 770 | return -1; |
219f2f23 | 771 | /* Data read from trace buffer, we're done. */ |
764880b7 PA |
772 | if (nbytes > 0) |
773 | return nbytes; | |
219f2f23 | 774 | if (!in_readonly_region (memaddr, length)) |
764880b7 | 775 | return -1; |
219f2f23 PA |
776 | /* Otherwise we have a valid readonly case, fall through. */ |
777 | /* (assume no half-trace half-real blocks for now) */ | |
778 | } | |
779 | ||
764880b7 PA |
780 | res = prepare_to_access_memory (); |
781 | if (res == 0) | |
90d74c30 | 782 | { |
764880b7 | 783 | res = read_inferior_memory (memaddr, myaddr, len); |
0146f85b | 784 | done_accessing_memory (); |
90d74c30 | 785 | |
764880b7 PA |
786 | return res == 0 ? len : -1; |
787 | } | |
788 | else | |
789 | return -1; | |
219f2f23 PA |
790 | } |
791 | ||
792 | /* Write trace frame or inferior memory. Actually, writing to trace | |
793 | frames is forbidden. */ | |
794 | ||
795 | static int | |
90d74c30 | 796 | gdb_write_memory (CORE_ADDR memaddr, const unsigned char *myaddr, int len) |
219f2f23 PA |
797 | { |
798 | if (current_traceframe >= 0) | |
799 | return EIO; | |
800 | else | |
90d74c30 PA |
801 | { |
802 | int ret; | |
803 | ||
804 | ret = prepare_to_access_memory (); | |
805 | if (ret == 0) | |
806 | { | |
807 | ret = write_inferior_memory (memaddr, myaddr, len); | |
0146f85b | 808 | done_accessing_memory (); |
90d74c30 PA |
809 | } |
810 | return ret; | |
811 | } | |
219f2f23 PA |
812 | } |
813 | ||
08388c79 DE |
814 | /* Subroutine of handle_search_memory to simplify it. */ |
815 | ||
816 | static int | |
817 | handle_search_memory_1 (CORE_ADDR start_addr, CORE_ADDR search_space_len, | |
818 | gdb_byte *pattern, unsigned pattern_len, | |
819 | gdb_byte *search_buf, | |
820 | unsigned chunk_size, unsigned search_buf_size, | |
821 | CORE_ADDR *found_addrp) | |
822 | { | |
823 | /* Prime the search buffer. */ | |
824 | ||
764880b7 PA |
825 | if (gdb_read_memory (start_addr, search_buf, search_buf_size) |
826 | != search_buf_size) | |
08388c79 | 827 | { |
b3dc46ff AB |
828 | warning ("Unable to access %ld bytes of target " |
829 | "memory at 0x%lx, halting search.", | |
830 | (long) search_buf_size, (long) start_addr); | |
08388c79 DE |
831 | return -1; |
832 | } | |
833 | ||
834 | /* Perform the search. | |
835 | ||
836 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
837 | When we've scanned N bytes we copy the trailing bytes to the start and | |
838 | read in another N bytes. */ | |
839 | ||
840 | while (search_space_len >= pattern_len) | |
841 | { | |
842 | gdb_byte *found_ptr; | |
843 | unsigned nr_search_bytes = (search_space_len < search_buf_size | |
844 | ? search_space_len | |
845 | : search_buf_size); | |
846 | ||
847 | found_ptr = memmem (search_buf, nr_search_bytes, pattern, pattern_len); | |
848 | ||
849 | if (found_ptr != NULL) | |
850 | { | |
851 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
852 | *found_addrp = found_addr; | |
853 | return 1; | |
854 | } | |
855 | ||
856 | /* Not found in this chunk, skip to next chunk. */ | |
857 | ||
858 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
859 | if (search_space_len >= chunk_size) | |
860 | search_space_len -= chunk_size; | |
861 | else | |
862 | search_space_len = 0; | |
863 | ||
864 | if (search_space_len >= pattern_len) | |
865 | { | |
866 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 867 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
868 | int nr_to_read; |
869 | ||
870 | /* Copy the trailing part of the previous iteration to the front | |
871 | of the buffer for the next iteration. */ | |
872 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
873 | ||
874 | nr_to_read = (search_space_len - keep_len < chunk_size | |
875 | ? search_space_len - keep_len | |
876 | : chunk_size); | |
877 | ||
90d74c30 | 878 | if (gdb_read_memory (read_addr, search_buf + keep_len, |
764880b7 | 879 | nr_to_read) != search_buf_size) |
08388c79 | 880 | { |
b3dc46ff | 881 | warning ("Unable to access %ld bytes of target memory " |
493e2a69 | 882 | "at 0x%lx, halting search.", |
b3dc46ff | 883 | (long) nr_to_read, (long) read_addr); |
08388c79 DE |
884 | return -1; |
885 | } | |
886 | ||
887 | start_addr += chunk_size; | |
888 | } | |
889 | } | |
890 | ||
891 | /* Not found. */ | |
892 | ||
893 | return 0; | |
894 | } | |
895 | ||
896 | /* Handle qSearch:memory packets. */ | |
897 | ||
898 | static void | |
899 | handle_search_memory (char *own_buf, int packet_len) | |
900 | { | |
901 | CORE_ADDR start_addr; | |
902 | CORE_ADDR search_space_len; | |
903 | gdb_byte *pattern; | |
904 | unsigned int pattern_len; | |
905 | /* NOTE: also defined in find.c testcase. */ | |
906 | #define SEARCH_CHUNK_SIZE 16000 | |
907 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
908 | /* Buffer to hold memory contents for searching. */ | |
909 | gdb_byte *search_buf; | |
910 | unsigned search_buf_size; | |
911 | int found; | |
912 | CORE_ADDR found_addr; | |
913 | int cmd_name_len = sizeof ("qSearch:memory:") - 1; | |
914 | ||
aef93bd7 | 915 | pattern = malloc (packet_len); |
08388c79 DE |
916 | if (pattern == NULL) |
917 | { | |
5e1471f5 | 918 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
919 | strcpy (own_buf, "E00"); |
920 | return; | |
921 | } | |
922 | if (decode_search_memory_packet (own_buf + cmd_name_len, | |
923 | packet_len - cmd_name_len, | |
924 | &start_addr, &search_space_len, | |
925 | pattern, &pattern_len) < 0) | |
926 | { | |
927 | free (pattern); | |
5e1471f5 | 928 | error ("Error in parsing qSearch:memory packet"); |
08388c79 DE |
929 | strcpy (own_buf, "E00"); |
930 | return; | |
931 | } | |
932 | ||
933 | search_buf_size = chunk_size + pattern_len - 1; | |
934 | ||
935 | /* No point in trying to allocate a buffer larger than the search space. */ | |
936 | if (search_space_len < search_buf_size) | |
937 | search_buf_size = search_space_len; | |
938 | ||
aef93bd7 | 939 | search_buf = malloc (search_buf_size); |
08388c79 DE |
940 | if (search_buf == NULL) |
941 | { | |
942 | free (pattern); | |
5e1471f5 | 943 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
944 | strcpy (own_buf, "E00"); |
945 | return; | |
946 | } | |
947 | ||
948 | found = handle_search_memory_1 (start_addr, search_space_len, | |
949 | pattern, pattern_len, | |
950 | search_buf, chunk_size, search_buf_size, | |
951 | &found_addr); | |
952 | ||
953 | if (found > 0) | |
954 | sprintf (own_buf, "1,%lx", (long) found_addr); | |
955 | else if (found == 0) | |
956 | strcpy (own_buf, "0"); | |
957 | else | |
958 | strcpy (own_buf, "E00"); | |
959 | ||
960 | free (search_buf); | |
961 | free (pattern); | |
962 | } | |
963 | ||
2d717e4f DJ |
964 | #define require_running(BUF) \ |
965 | if (!target_running ()) \ | |
966 | { \ | |
967 | write_enn (BUF); \ | |
968 | return; \ | |
969 | } | |
970 | ||
87ce2a04 DE |
971 | /* Parse options to --debug-format= and "monitor set debug-format". |
972 | ARG is the text after "--debug-format=" or "monitor set debug-format". | |
973 | IS_MONITOR is non-zero if we're invoked via "monitor set debug-format". | |
974 | This triggers calls to monitor_output. | |
975 | The result is NULL if all options were parsed ok, otherwise an error | |
976 | message which the caller must free. | |
977 | ||
978 | N.B. These commands affect all debug format settings, they are not | |
979 | cumulative. If a format is not specified, it is turned off. | |
980 | However, we don't go to extra trouble with things like | |
981 | "monitor set debug-format all,none,timestamp". | |
982 | Instead we just parse them one at a time, in order. | |
983 | ||
984 | The syntax for "monitor set debug" we support here is not identical | |
985 | to gdb's "set debug foo on|off" because we also use this function to | |
986 | parse "--debug-format=foo,bar". */ | |
987 | ||
988 | static char * | |
989 | parse_debug_format_options (const char *arg, int is_monitor) | |
990 | { | |
991 | VEC (char_ptr) *options; | |
992 | int ix; | |
993 | char *option; | |
994 | ||
995 | /* First turn all debug format options off. */ | |
996 | debug_timestamp = 0; | |
997 | ||
998 | /* First remove leading spaces, for "monitor set debug-format". */ | |
999 | while (isspace (*arg)) | |
1000 | ++arg; | |
1001 | ||
1002 | options = delim_string_to_char_ptr_vec (arg, ','); | |
1003 | ||
1004 | for (ix = 0; VEC_iterate (char_ptr, options, ix, option); ++ix) | |
1005 | { | |
1006 | if (strcmp (option, "all") == 0) | |
1007 | { | |
1008 | debug_timestamp = 1; | |
1009 | if (is_monitor) | |
1010 | monitor_output ("All extra debug format options enabled.\n"); | |
1011 | } | |
1012 | else if (strcmp (option, "none") == 0) | |
1013 | { | |
1014 | debug_timestamp = 0; | |
1015 | if (is_monitor) | |
1016 | monitor_output ("All extra debug format options disabled.\n"); | |
1017 | } | |
87ce2a04 DE |
1018 | else if (strcmp (option, "timestamp") == 0) |
1019 | { | |
1020 | debug_timestamp = 1; | |
1021 | if (is_monitor) | |
1022 | monitor_output ("Timestamps will be added to debug output.\n"); | |
1023 | } | |
87ce2a04 DE |
1024 | else if (*option == '\0') |
1025 | { | |
1026 | /* An empty option, e.g., "--debug-format=foo,,bar", is ignored. */ | |
1027 | continue; | |
1028 | } | |
1029 | else | |
1030 | { | |
1031 | char *msg = xstrprintf ("Unknown debug-format argument: \"%s\"\n", | |
1032 | option); | |
1033 | ||
1034 | free_char_ptr_vec (options); | |
1035 | return msg; | |
1036 | } | |
1037 | } | |
1038 | ||
1039 | free_char_ptr_vec (options); | |
1040 | return NULL; | |
1041 | } | |
1042 | ||
cdbfd419 PP |
1043 | /* Handle monitor commands not handled by target-specific handlers. */ |
1044 | ||
1045 | static void | |
d73f2619 | 1046 | handle_monitor_command (char *mon, char *own_buf) |
cdbfd419 PP |
1047 | { |
1048 | if (strcmp (mon, "set debug 1") == 0) | |
1049 | { | |
1050 | debug_threads = 1; | |
1051 | monitor_output ("Debug output enabled.\n"); | |
1052 | } | |
1053 | else if (strcmp (mon, "set debug 0") == 0) | |
1054 | { | |
1055 | debug_threads = 0; | |
1056 | monitor_output ("Debug output disabled.\n"); | |
1057 | } | |
1058 | else if (strcmp (mon, "set debug-hw-points 1") == 0) | |
1059 | { | |
c5e92cca | 1060 | show_debug_regs = 1; |
cdbfd419 PP |
1061 | monitor_output ("H/W point debugging output enabled.\n"); |
1062 | } | |
1063 | else if (strcmp (mon, "set debug-hw-points 0") == 0) | |
1064 | { | |
c5e92cca | 1065 | show_debug_regs = 0; |
cdbfd419 PP |
1066 | monitor_output ("H/W point debugging output disabled.\n"); |
1067 | } | |
1068 | else if (strcmp (mon, "set remote-debug 1") == 0) | |
1069 | { | |
1070 | remote_debug = 1; | |
1071 | monitor_output ("Protocol debug output enabled.\n"); | |
1072 | } | |
1073 | else if (strcmp (mon, "set remote-debug 0") == 0) | |
1074 | { | |
1075 | remote_debug = 0; | |
1076 | monitor_output ("Protocol debug output disabled.\n"); | |
1077 | } | |
61012eef | 1078 | else if (startswith (mon, "set debug-format ")) |
87ce2a04 DE |
1079 | { |
1080 | char *error_msg | |
1081 | = parse_debug_format_options (mon + sizeof ("set debug-format ") - 1, | |
1082 | 1); | |
1083 | ||
1084 | if (error_msg != NULL) | |
1085 | { | |
1086 | monitor_output (error_msg); | |
1087 | monitor_show_help (); | |
1088 | write_enn (own_buf); | |
1089 | xfree (error_msg); | |
1090 | } | |
1091 | } | |
cdbfd419 PP |
1092 | else if (strcmp (mon, "help") == 0) |
1093 | monitor_show_help (); | |
1094 | else if (strcmp (mon, "exit") == 0) | |
1095 | exit_requested = 1; | |
1096 | else | |
1097 | { | |
1098 | monitor_output ("Unknown monitor command.\n\n"); | |
1099 | monitor_show_help (); | |
1100 | write_enn (own_buf); | |
1101 | } | |
1102 | } | |
1103 | ||
d08aafef PA |
1104 | /* Associates a callback with each supported qXfer'able object. */ |
1105 | ||
1106 | struct qxfer | |
1107 | { | |
1108 | /* The object this handler handles. */ | |
1109 | const char *object; | |
1110 | ||
1111 | /* Request that the target transfer up to LEN 8-bit bytes of the | |
1112 | target's OBJECT. The OFFSET, for a seekable object, specifies | |
1113 | the starting point. The ANNEX can be used to provide additional | |
1114 | data-specific information to the target. | |
1115 | ||
1116 | Return the number of bytes actually transfered, zero when no | |
5cc22e4c MM |
1117 | further transfer is possible, -1 on error, -2 when the transfer |
1118 | is not supported, and -3 on a verbose error message that should | |
1119 | be preserved. Return of a positive value smaller than LEN does | |
1120 | not indicate the end of the object, only the end of the transfer. | |
d08aafef PA |
1121 | |
1122 | One, and only one, of readbuf or writebuf must be non-NULL. */ | |
1123 | int (*xfer) (const char *annex, | |
1124 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1125 | ULONGEST offset, LONGEST len); | |
1126 | }; | |
1127 | ||
1128 | /* Handle qXfer:auxv:read. */ | |
1129 | ||
1130 | static int | |
1131 | handle_qxfer_auxv (const char *annex, | |
1132 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1133 | ULONGEST offset, LONGEST len) | |
1134 | { | |
1135 | if (the_target->read_auxv == NULL || writebuf != NULL) | |
1136 | return -2; | |
1137 | ||
1138 | if (annex[0] != '\0' || !target_running ()) | |
1139 | return -1; | |
1140 | ||
1141 | return (*the_target->read_auxv) (offset, readbuf, len); | |
1142 | } | |
1143 | ||
e57f1de3 GB |
1144 | /* Handle qXfer:exec-file:read. */ |
1145 | ||
1146 | static int | |
1147 | handle_qxfer_exec_file (const char *const_annex, | |
1148 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1149 | ULONGEST offset, LONGEST len) | |
1150 | { | |
835205d0 | 1151 | char *file; |
e57f1de3 GB |
1152 | ULONGEST pid; |
1153 | int total_len; | |
1154 | ||
1155 | if (the_target->pid_to_exec_file == NULL || writebuf != NULL) | |
1156 | return -2; | |
1157 | ||
835205d0 GB |
1158 | if (const_annex[0] == '\0') |
1159 | { | |
1160 | if (current_thread == NULL) | |
1161 | return -1; | |
1162 | ||
1163 | pid = pid_of (current_thread); | |
1164 | } | |
1165 | else | |
1166 | { | |
1167 | char *annex = alloca (strlen (const_annex) + 1); | |
1168 | ||
1169 | strcpy (annex, const_annex); | |
1170 | annex = unpack_varlen_hex (annex, &pid); | |
1171 | ||
1172 | if (annex[0] != '\0') | |
1173 | return -1; | |
1174 | } | |
1175 | ||
1176 | if (pid <= 0) | |
e57f1de3 GB |
1177 | return -1; |
1178 | ||
1179 | file = (*the_target->pid_to_exec_file) (pid); | |
1180 | if (file == NULL) | |
1181 | return -1; | |
1182 | ||
1183 | total_len = strlen (file); | |
1184 | ||
1185 | if (offset > total_len) | |
1186 | return -1; | |
1187 | ||
1188 | if (offset + len > total_len) | |
1189 | len = total_len - offset; | |
1190 | ||
1191 | memcpy (readbuf, file + offset, len); | |
1192 | return len; | |
1193 | } | |
1194 | ||
d08aafef PA |
1195 | /* Handle qXfer:features:read. */ |
1196 | ||
1197 | static int | |
1198 | handle_qxfer_features (const char *annex, | |
1199 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1200 | ULONGEST offset, LONGEST len) | |
1201 | { | |
1202 | const char *document; | |
1203 | size_t total_len; | |
1204 | ||
1205 | if (writebuf != NULL) | |
1206 | return -2; | |
1207 | ||
1208 | if (!target_running ()) | |
1209 | return -1; | |
1210 | ||
1211 | /* Grab the correct annex. */ | |
1212 | document = get_features_xml (annex); | |
1213 | if (document == NULL) | |
1214 | return -1; | |
1215 | ||
1216 | total_len = strlen (document); | |
1217 | ||
1218 | if (offset > total_len) | |
1219 | return -1; | |
1220 | ||
1221 | if (offset + len > total_len) | |
1222 | len = total_len - offset; | |
1223 | ||
1224 | memcpy (readbuf, document + offset, len); | |
1225 | return len; | |
1226 | } | |
1227 | ||
649ebbca DE |
1228 | /* Worker routine for handle_qxfer_libraries. |
1229 | Add to the length pointed to by ARG a conservative estimate of the | |
1230 | length needed to transmit the file name of INF. */ | |
1231 | ||
1232 | static void | |
1233 | accumulate_file_name_length (struct inferior_list_entry *inf, void *arg) | |
1234 | { | |
1235 | struct dll_info *dll = (struct dll_info *) inf; | |
1236 | unsigned int *total_len = arg; | |
1237 | ||
1238 | /* Over-estimate the necessary memory. Assume that every character | |
1239 | in the library name must be escaped. */ | |
1240 | *total_len += 128 + 6 * strlen (dll->name); | |
1241 | } | |
1242 | ||
1243 | /* Worker routine for handle_qxfer_libraries. | |
1244 | Emit the XML to describe the library in INF. */ | |
1245 | ||
1246 | static void | |
1247 | emit_dll_description (struct inferior_list_entry *inf, void *arg) | |
1248 | { | |
1249 | struct dll_info *dll = (struct dll_info *) inf; | |
1250 | char **p_ptr = arg; | |
1251 | char *p = *p_ptr; | |
1252 | char *name; | |
1253 | ||
1254 | strcpy (p, " <library name=\""); | |
1255 | p = p + strlen (p); | |
1256 | name = xml_escape_text (dll->name); | |
1257 | strcpy (p, name); | |
1258 | free (name); | |
1259 | p = p + strlen (p); | |
1260 | strcpy (p, "\"><segment address=\""); | |
1261 | p = p + strlen (p); | |
1262 | sprintf (p, "0x%lx", (long) dll->base_addr); | |
1263 | p = p + strlen (p); | |
1264 | strcpy (p, "\"/></library>\n"); | |
1265 | p = p + strlen (p); | |
1266 | ||
1267 | *p_ptr = p; | |
1268 | } | |
1269 | ||
d08aafef PA |
1270 | /* Handle qXfer:libraries:read. */ |
1271 | ||
1272 | static int | |
1273 | handle_qxfer_libraries (const char *annex, | |
1274 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1275 | ULONGEST offset, LONGEST len) | |
1276 | { | |
1277 | unsigned int total_len; | |
1278 | char *document, *p; | |
d08aafef PA |
1279 | |
1280 | if (writebuf != NULL) | |
1281 | return -2; | |
1282 | ||
1283 | if (annex[0] != '\0' || !target_running ()) | |
1284 | return -1; | |
1285 | ||
d08aafef | 1286 | total_len = 64; |
649ebbca DE |
1287 | for_each_inferior_with_data (&all_dlls, accumulate_file_name_length, |
1288 | &total_len); | |
d08aafef PA |
1289 | |
1290 | document = malloc (total_len); | |
1291 | if (document == NULL) | |
1292 | return -1; | |
1293 | ||
24c05f46 | 1294 | strcpy (document, "<library-list version=\"1.0\">\n"); |
d08aafef PA |
1295 | p = document + strlen (document); |
1296 | ||
649ebbca | 1297 | for_each_inferior_with_data (&all_dlls, emit_dll_description, &p); |
d08aafef PA |
1298 | |
1299 | strcpy (p, "</library-list>\n"); | |
1300 | ||
1301 | total_len = strlen (document); | |
1302 | ||
1303 | if (offset > total_len) | |
1304 | { | |
1305 | free (document); | |
1306 | return -1; | |
1307 | } | |
1308 | ||
1309 | if (offset + len > total_len) | |
1310 | len = total_len - offset; | |
1311 | ||
1312 | memcpy (readbuf, document + offset, len); | |
1313 | free (document); | |
1314 | return len; | |
1315 | } | |
1316 | ||
2268b414 JK |
1317 | /* Handle qXfer:libraries-svr4:read. */ |
1318 | ||
1319 | static int | |
1320 | handle_qxfer_libraries_svr4 (const char *annex, | |
1321 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1322 | ULONGEST offset, LONGEST len) | |
1323 | { | |
1324 | if (writebuf != NULL) | |
1325 | return -2; | |
1326 | ||
b1fbec62 | 1327 | if (!target_running () || the_target->qxfer_libraries_svr4 == NULL) |
2268b414 JK |
1328 | return -1; |
1329 | ||
1330 | return the_target->qxfer_libraries_svr4 (annex, readbuf, writebuf, offset, len); | |
1331 | } | |
1332 | ||
d08aafef PA |
1333 | /* Handle qXfer:osadata:read. */ |
1334 | ||
1335 | static int | |
1336 | handle_qxfer_osdata (const char *annex, | |
1337 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1338 | ULONGEST offset, LONGEST len) | |
1339 | { | |
1340 | if (the_target->qxfer_osdata == NULL || writebuf != NULL) | |
1341 | return -2; | |
1342 | ||
1343 | return (*the_target->qxfer_osdata) (annex, readbuf, NULL, offset, len); | |
1344 | } | |
1345 | ||
1346 | /* Handle qXfer:siginfo:read and qXfer:siginfo:write. */ | |
1347 | ||
1348 | static int | |
1349 | handle_qxfer_siginfo (const char *annex, | |
1350 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1351 | ULONGEST offset, LONGEST len) | |
1352 | { | |
1353 | if (the_target->qxfer_siginfo == NULL) | |
1354 | return -2; | |
1355 | ||
1356 | if (annex[0] != '\0' || !target_running ()) | |
1357 | return -1; | |
1358 | ||
1359 | return (*the_target->qxfer_siginfo) (annex, readbuf, writebuf, offset, len); | |
1360 | } | |
1361 | ||
1362 | /* Handle qXfer:spu:read and qXfer:spu:write. */ | |
1363 | ||
1364 | static int | |
1365 | handle_qxfer_spu (const char *annex, | |
1366 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1367 | ULONGEST offset, LONGEST len) | |
1368 | { | |
1369 | if (the_target->qxfer_spu == NULL) | |
1370 | return -2; | |
1371 | ||
1372 | if (!target_running ()) | |
1373 | return -1; | |
1374 | ||
1375 | return (*the_target->qxfer_spu) (annex, readbuf, writebuf, offset, len); | |
1376 | } | |
1377 | ||
1378 | /* Handle qXfer:statictrace:read. */ | |
1379 | ||
1380 | static int | |
1381 | handle_qxfer_statictrace (const char *annex, | |
1382 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1383 | ULONGEST offset, LONGEST len) | |
1384 | { | |
1385 | ULONGEST nbytes; | |
1386 | ||
1387 | if (writebuf != NULL) | |
1388 | return -2; | |
1389 | ||
1390 | if (annex[0] != '\0' || !target_running () || current_traceframe == -1) | |
1391 | return -1; | |
1392 | ||
1393 | if (traceframe_read_sdata (current_traceframe, offset, | |
1394 | readbuf, len, &nbytes)) | |
1395 | return -1; | |
1396 | return nbytes; | |
1397 | } | |
1398 | ||
649ebbca DE |
1399 | /* Helper for handle_qxfer_threads_proper. |
1400 | Emit the XML to describe the thread of INF. */ | |
d08aafef | 1401 | |
dc146f7c | 1402 | static void |
649ebbca | 1403 | handle_qxfer_threads_worker (struct inferior_list_entry *inf, void *arg) |
dc146f7c | 1404 | { |
649ebbca DE |
1405 | struct thread_info *thread = (struct thread_info *) inf; |
1406 | struct buffer *buffer = arg; | |
1407 | ptid_t ptid = thread_to_gdb_id (thread); | |
1408 | char ptid_s[100]; | |
1409 | int core = target_core_of_thread (ptid); | |
1410 | char core_s[21]; | |
dc146f7c | 1411 | |
649ebbca | 1412 | write_ptid (ptid_s, ptid); |
dc146f7c | 1413 | |
649ebbca | 1414 | if (core != -1) |
dc146f7c | 1415 | { |
649ebbca DE |
1416 | sprintf (core_s, "%d", core); |
1417 | buffer_xml_printf (buffer, "<thread id=\"%s\" core=\"%s\"/>\n", | |
1418 | ptid_s, core_s); | |
1419 | } | |
1420 | else | |
1421 | { | |
1422 | buffer_xml_printf (buffer, "<thread id=\"%s\"/>\n", | |
1423 | ptid_s); | |
1424 | } | |
1425 | } | |
dc146f7c | 1426 | |
649ebbca | 1427 | /* Helper for handle_qxfer_threads. */ |
dc146f7c | 1428 | |
649ebbca DE |
1429 | static void |
1430 | handle_qxfer_threads_proper (struct buffer *buffer) | |
1431 | { | |
1432 | buffer_grow_str (buffer, "<threads>\n"); | |
1433 | ||
1434 | for_each_inferior_with_data (&all_threads, handle_qxfer_threads_worker, | |
1435 | buffer); | |
dc146f7c VP |
1436 | |
1437 | buffer_grow_str0 (buffer, "</threads>\n"); | |
1438 | } | |
1439 | ||
d08aafef PA |
1440 | /* Handle qXfer:threads:read. */ |
1441 | ||
dc146f7c | 1442 | static int |
d08aafef PA |
1443 | handle_qxfer_threads (const char *annex, |
1444 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1445 | ULONGEST offset, LONGEST len) | |
dc146f7c VP |
1446 | { |
1447 | static char *result = 0; | |
1448 | static unsigned int result_length = 0; | |
1449 | ||
d08aafef PA |
1450 | if (writebuf != NULL) |
1451 | return -2; | |
1452 | ||
1453 | if (!target_running () || annex[0] != '\0') | |
1454 | return -1; | |
dc146f7c VP |
1455 | |
1456 | if (offset == 0) | |
1457 | { | |
1458 | struct buffer buffer; | |
1459 | /* When asked for data at offset 0, generate everything and store into | |
1460 | 'result'. Successive reads will be served off 'result'. */ | |
1461 | if (result) | |
1462 | free (result); | |
1463 | ||
1464 | buffer_init (&buffer); | |
1465 | ||
d08aafef | 1466 | handle_qxfer_threads_proper (&buffer); |
dc146f7c VP |
1467 | |
1468 | result = buffer_finish (&buffer); | |
1469 | result_length = strlen (result); | |
1470 | buffer_free (&buffer); | |
1471 | } | |
1472 | ||
1473 | if (offset >= result_length) | |
1474 | { | |
1475 | /* We're out of data. */ | |
1476 | free (result); | |
1477 | result = NULL; | |
1478 | result_length = 0; | |
1479 | return 0; | |
1480 | } | |
1481 | ||
d08aafef PA |
1482 | if (len > result_length - offset) |
1483 | len = result_length - offset; | |
1484 | ||
1485 | memcpy (readbuf, result + offset, len); | |
1486 | ||
1487 | return len; | |
1488 | } | |
1489 | ||
b3b9301e PA |
1490 | /* Handle qXfer:traceframe-info:read. */ |
1491 | ||
1492 | static int | |
1493 | handle_qxfer_traceframe_info (const char *annex, | |
1494 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1495 | ULONGEST offset, LONGEST len) | |
1496 | { | |
1497 | static char *result = 0; | |
1498 | static unsigned int result_length = 0; | |
1499 | ||
1500 | if (writebuf != NULL) | |
1501 | return -2; | |
1502 | ||
1503 | if (!target_running () || annex[0] != '\0' || current_traceframe == -1) | |
1504 | return -1; | |
1505 | ||
1506 | if (offset == 0) | |
1507 | { | |
1508 | struct buffer buffer; | |
1509 | ||
1510 | /* When asked for data at offset 0, generate everything and | |
1511 | store into 'result'. Successive reads will be served off | |
1512 | 'result'. */ | |
1513 | free (result); | |
1514 | ||
1515 | buffer_init (&buffer); | |
1516 | ||
1517 | traceframe_read_info (current_traceframe, &buffer); | |
1518 | ||
1519 | result = buffer_finish (&buffer); | |
1520 | result_length = strlen (result); | |
1521 | buffer_free (&buffer); | |
1522 | } | |
1523 | ||
1524 | if (offset >= result_length) | |
1525 | { | |
1526 | /* We're out of data. */ | |
1527 | free (result); | |
1528 | result = NULL; | |
1529 | result_length = 0; | |
1530 | return 0; | |
1531 | } | |
1532 | ||
1533 | if (len > result_length - offset) | |
1534 | len = result_length - offset; | |
1535 | ||
1536 | memcpy (readbuf, result + offset, len); | |
1537 | return len; | |
1538 | } | |
1539 | ||
78d85199 YQ |
1540 | /* Handle qXfer:fdpic:read. */ |
1541 | ||
1542 | static int | |
1543 | handle_qxfer_fdpic (const char *annex, gdb_byte *readbuf, | |
1544 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1545 | { | |
1546 | if (the_target->read_loadmap == NULL) | |
1547 | return -2; | |
1548 | ||
1549 | if (!target_running ()) | |
1550 | return -1; | |
1551 | ||
1552 | return (*the_target->read_loadmap) (annex, offset, readbuf, len); | |
1553 | } | |
1554 | ||
9accd112 MM |
1555 | /* Handle qXfer:btrace:read. */ |
1556 | ||
1557 | static int | |
1558 | handle_qxfer_btrace (const char *annex, | |
1559 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1560 | ULONGEST offset, LONGEST len) | |
1561 | { | |
1562 | static struct buffer cache; | |
1563 | struct thread_info *thread; | |
969c39fb | 1564 | int type, result; |
9accd112 MM |
1565 | |
1566 | if (the_target->read_btrace == NULL || writebuf != NULL) | |
1567 | return -2; | |
1568 | ||
1569 | if (!target_running ()) | |
1570 | return -1; | |
1571 | ||
1572 | if (ptid_equal (general_thread, null_ptid) | |
1573 | || ptid_equal (general_thread, minus_one_ptid)) | |
1574 | { | |
1575 | strcpy (own_buf, "E.Must select a single thread."); | |
1576 | return -3; | |
1577 | } | |
1578 | ||
1579 | thread = find_thread_ptid (general_thread); | |
1580 | if (thread == NULL) | |
1581 | { | |
1582 | strcpy (own_buf, "E.No such thread."); | |
1583 | return -3; | |
1584 | } | |
1585 | ||
1586 | if (thread->btrace == NULL) | |
1587 | { | |
1588 | strcpy (own_buf, "E.Btrace not enabled."); | |
1589 | return -3; | |
1590 | } | |
1591 | ||
1592 | if (strcmp (annex, "all") == 0) | |
864089d2 | 1593 | type = BTRACE_READ_ALL; |
9accd112 | 1594 | else if (strcmp (annex, "new") == 0) |
864089d2 | 1595 | type = BTRACE_READ_NEW; |
969c39fb MM |
1596 | else if (strcmp (annex, "delta") == 0) |
1597 | type = BTRACE_READ_DELTA; | |
9accd112 MM |
1598 | else |
1599 | { | |
1600 | strcpy (own_buf, "E.Bad annex."); | |
1601 | return -3; | |
1602 | } | |
1603 | ||
1604 | if (offset == 0) | |
1605 | { | |
1606 | buffer_free (&cache); | |
1607 | ||
969c39fb MM |
1608 | result = target_read_btrace (thread->btrace, &cache, type); |
1609 | if (result != 0) | |
1610 | { | |
1611 | memcpy (own_buf, cache.buffer, cache.used_size); | |
1612 | return -3; | |
1613 | } | |
9accd112 MM |
1614 | } |
1615 | else if (offset > cache.used_size) | |
1616 | { | |
1617 | buffer_free (&cache); | |
1618 | return -3; | |
1619 | } | |
1620 | ||
1621 | if (len > cache.used_size - offset) | |
1622 | len = cache.used_size - offset; | |
1623 | ||
1624 | memcpy (readbuf, cache.buffer + offset, len); | |
1625 | ||
1626 | return len; | |
1627 | } | |
1628 | ||
f4abbc16 MM |
1629 | /* Handle qXfer:btrace-conf:read. */ |
1630 | ||
1631 | static int | |
1632 | handle_qxfer_btrace_conf (const char *annex, | |
1633 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1634 | ULONGEST offset, LONGEST len) | |
1635 | { | |
1636 | static struct buffer cache; | |
1637 | struct thread_info *thread; | |
1638 | int result; | |
1639 | ||
1640 | if (the_target->read_btrace_conf == NULL || writebuf != NULL) | |
1641 | return -2; | |
1642 | ||
1643 | if (annex[0] != '\0' || !target_running ()) | |
1644 | return -1; | |
1645 | ||
1646 | if (ptid_equal (general_thread, null_ptid) | |
1647 | || ptid_equal (general_thread, minus_one_ptid)) | |
1648 | { | |
1649 | strcpy (own_buf, "E.Must select a single thread."); | |
1650 | return -3; | |
1651 | } | |
1652 | ||
1653 | thread = find_thread_ptid (general_thread); | |
1654 | if (thread == NULL) | |
1655 | { | |
1656 | strcpy (own_buf, "E.No such thread."); | |
1657 | return -3; | |
1658 | } | |
1659 | ||
1660 | if (thread->btrace == NULL) | |
1661 | { | |
1662 | strcpy (own_buf, "E.Btrace not enabled."); | |
1663 | return -3; | |
1664 | } | |
1665 | ||
1666 | if (offset == 0) | |
1667 | { | |
1668 | buffer_free (&cache); | |
1669 | ||
1670 | result = target_read_btrace_conf (thread->btrace, &cache); | |
1671 | if (result != 0) | |
1672 | { | |
1673 | memcpy (own_buf, cache.buffer, cache.used_size); | |
1674 | return -3; | |
1675 | } | |
1676 | } | |
1677 | else if (offset > cache.used_size) | |
1678 | { | |
1679 | buffer_free (&cache); | |
1680 | return -3; | |
1681 | } | |
1682 | ||
1683 | if (len > cache.used_size - offset) | |
1684 | len = cache.used_size - offset; | |
1685 | ||
1686 | memcpy (readbuf, cache.buffer + offset, len); | |
1687 | ||
1688 | return len; | |
1689 | } | |
1690 | ||
d08aafef PA |
1691 | static const struct qxfer qxfer_packets[] = |
1692 | { | |
1693 | { "auxv", handle_qxfer_auxv }, | |
9accd112 | 1694 | { "btrace", handle_qxfer_btrace }, |
f4abbc16 | 1695 | { "btrace-conf", handle_qxfer_btrace_conf }, |
e57f1de3 | 1696 | { "exec-file", handle_qxfer_exec_file}, |
78d85199 | 1697 | { "fdpic", handle_qxfer_fdpic}, |
d08aafef PA |
1698 | { "features", handle_qxfer_features }, |
1699 | { "libraries", handle_qxfer_libraries }, | |
2268b414 | 1700 | { "libraries-svr4", handle_qxfer_libraries_svr4 }, |
d08aafef PA |
1701 | { "osdata", handle_qxfer_osdata }, |
1702 | { "siginfo", handle_qxfer_siginfo }, | |
1703 | { "spu", handle_qxfer_spu }, | |
1704 | { "statictrace", handle_qxfer_statictrace }, | |
1705 | { "threads", handle_qxfer_threads }, | |
b3b9301e | 1706 | { "traceframe-info", handle_qxfer_traceframe_info }, |
d08aafef PA |
1707 | }; |
1708 | ||
1709 | static int | |
1710 | handle_qxfer (char *own_buf, int packet_len, int *new_packet_len_p) | |
1711 | { | |
1712 | int i; | |
1713 | char *object; | |
1714 | char *rw; | |
1715 | char *annex; | |
1716 | char *offset; | |
1717 | ||
61012eef | 1718 | if (!startswith (own_buf, "qXfer:")) |
d08aafef PA |
1719 | return 0; |
1720 | ||
1721 | /* Grab the object, r/w and annex. */ | |
1722 | if (decode_xfer (own_buf + 6, &object, &rw, &annex, &offset) < 0) | |
1723 | { | |
1724 | write_enn (own_buf); | |
1725 | return 1; | |
1726 | } | |
1727 | ||
1728 | for (i = 0; | |
1729 | i < sizeof (qxfer_packets) / sizeof (qxfer_packets[0]); | |
1730 | i++) | |
1731 | { | |
1732 | const struct qxfer *q = &qxfer_packets[i]; | |
1733 | ||
1734 | if (strcmp (object, q->object) == 0) | |
1735 | { | |
1736 | if (strcmp (rw, "read") == 0) | |
1737 | { | |
1738 | unsigned char *data; | |
1739 | int n; | |
1740 | CORE_ADDR ofs; | |
1741 | unsigned int len; | |
1742 | ||
1743 | /* Grab the offset and length. */ | |
1744 | if (decode_xfer_read (offset, &ofs, &len) < 0) | |
1745 | { | |
1746 | write_enn (own_buf); | |
1747 | return 1; | |
1748 | } | |
1749 | ||
1750 | /* Read one extra byte, as an indicator of whether there is | |
1751 | more. */ | |
1752 | if (len > PBUFSIZ - 2) | |
1753 | len = PBUFSIZ - 2; | |
1754 | data = malloc (len + 1); | |
1755 | if (data == NULL) | |
1756 | { | |
1757 | write_enn (own_buf); | |
1758 | return 1; | |
1759 | } | |
1760 | n = (*q->xfer) (annex, data, NULL, ofs, len + 1); | |
1761 | if (n == -2) | |
1762 | { | |
1763 | free (data); | |
1764 | return 0; | |
1765 | } | |
5cc22e4c MM |
1766 | else if (n == -3) |
1767 | { | |
1768 | /* Preserve error message. */ | |
1769 | } | |
d08aafef PA |
1770 | else if (n < 0) |
1771 | write_enn (own_buf); | |
1772 | else if (n > len) | |
1773 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); | |
1774 | else | |
1775 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); | |
1776 | ||
1777 | free (data); | |
1778 | return 1; | |
1779 | } | |
1780 | else if (strcmp (rw, "write") == 0) | |
1781 | { | |
1782 | int n; | |
1783 | unsigned int len; | |
1784 | CORE_ADDR ofs; | |
1785 | unsigned char *data; | |
1786 | ||
1787 | strcpy (own_buf, "E00"); | |
1788 | data = malloc (packet_len - (offset - own_buf)); | |
1789 | if (data == NULL) | |
1790 | { | |
1791 | write_enn (own_buf); | |
1792 | return 1; | |
1793 | } | |
1794 | if (decode_xfer_write (offset, packet_len - (offset - own_buf), | |
1795 | &ofs, &len, data) < 0) | |
1796 | { | |
1797 | free (data); | |
1798 | write_enn (own_buf); | |
1799 | return 1; | |
1800 | } | |
1801 | ||
1802 | n = (*q->xfer) (annex, NULL, data, ofs, len); | |
1803 | if (n == -2) | |
1804 | { | |
1805 | free (data); | |
1806 | return 0; | |
1807 | } | |
5cc22e4c MM |
1808 | else if (n == -3) |
1809 | { | |
1810 | /* Preserve error message. */ | |
1811 | } | |
d08aafef PA |
1812 | else if (n < 0) |
1813 | write_enn (own_buf); | |
1814 | else | |
1815 | sprintf (own_buf, "%x", n); | |
dc146f7c | 1816 | |
d08aafef PA |
1817 | free (data); |
1818 | return 1; | |
1819 | } | |
dc146f7c | 1820 | |
d08aafef PA |
1821 | return 0; |
1822 | } | |
1823 | } | |
dc146f7c | 1824 | |
d08aafef | 1825 | return 0; |
dc146f7c VP |
1826 | } |
1827 | ||
30ba68cb MS |
1828 | /* Table used by the crc32 function to calcuate the checksum. */ |
1829 | ||
1830 | static unsigned int crc32_table[256] = | |
1831 | {0, 0}; | |
1832 | ||
1833 | /* Compute 32 bit CRC from inferior memory. | |
1834 | ||
1835 | On success, return 32 bit CRC. | |
1836 | On failure, return (unsigned long long) -1. */ | |
1837 | ||
1838 | static unsigned long long | |
1839 | crc32 (CORE_ADDR base, int len, unsigned int crc) | |
1840 | { | |
1841 | if (!crc32_table[1]) | |
1842 | { | |
1843 | /* Initialize the CRC table and the decoding table. */ | |
1844 | int i, j; | |
1845 | unsigned int c; | |
1846 | ||
1847 | for (i = 0; i < 256; i++) | |
1848 | { | |
1849 | for (c = i << 24, j = 8; j > 0; --j) | |
1850 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
1851 | crc32_table[i] = c; | |
1852 | } | |
1853 | } | |
1854 | ||
1855 | while (len--) | |
1856 | { | |
1857 | unsigned char byte = 0; | |
1858 | ||
1859 | /* Return failure if memory read fails. */ | |
1860 | if (read_inferior_memory (base, &byte, 1) != 0) | |
1861 | return (unsigned long long) -1; | |
1862 | ||
1863 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ byte) & 255]; | |
1864 | base++; | |
1865 | } | |
1866 | return (unsigned long long) crc; | |
1867 | } | |
1868 | ||
043c3577 MM |
1869 | /* Add supported btrace packets to BUF. */ |
1870 | ||
1871 | static void | |
1872 | supported_btrace_packets (char *buf) | |
1873 | { | |
1874 | if (target_supports_btrace (BTRACE_FORMAT_BTS)) | |
d33501a5 MM |
1875 | { |
1876 | strcat (buf, ";Qbtrace:bts+"); | |
1877 | strcat (buf, ";Qbtrace-conf:bts:size+"); | |
1878 | } | |
043c3577 MM |
1879 | else |
1880 | return; | |
1881 | ||
1882 | strcat (buf, ";Qbtrace:off+"); | |
1883 | strcat (buf, ";qXfer:btrace:read+"); | |
f4abbc16 | 1884 | strcat (buf, ";qXfer:btrace-conf:read+"); |
043c3577 MM |
1885 | } |
1886 | ||
ce3a066d | 1887 | /* Handle all of the extended 'q' packets. */ |
d08aafef | 1888 | |
ce3a066d | 1889 | void |
0e7f50da | 1890 | handle_query (char *own_buf, int packet_len, int *new_packet_len_p) |
ce3a066d | 1891 | { |
0d62e5e8 DJ |
1892 | static struct inferior_list_entry *thread_ptr; |
1893 | ||
bb63802a | 1894 | /* Reply the current thread id. */ |
db42f210 | 1895 | if (strcmp ("qC", own_buf) == 0 && !disable_packet_qC) |
bb63802a | 1896 | { |
95954743 | 1897 | ptid_t gdb_id; |
2d717e4f | 1898 | require_running (own_buf); |
bd99dc85 | 1899 | |
95954743 PA |
1900 | if (!ptid_equal (general_thread, null_ptid) |
1901 | && !ptid_equal (general_thread, minus_one_ptid)) | |
bd99dc85 PA |
1902 | gdb_id = general_thread; |
1903 | else | |
1904 | { | |
649ebbca | 1905 | thread_ptr = get_first_inferior (&all_threads); |
bd99dc85 PA |
1906 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); |
1907 | } | |
1908 | ||
95954743 PA |
1909 | sprintf (own_buf, "QC"); |
1910 | own_buf += 2; | |
4b812f4e | 1911 | write_ptid (own_buf, gdb_id); |
bb63802a UW |
1912 | return; |
1913 | } | |
1914 | ||
ce3a066d DJ |
1915 | if (strcmp ("qSymbol::", own_buf) == 0) |
1916 | { | |
d3bbe7a0 PA |
1917 | /* GDB is suggesting new symbols have been loaded. This may |
1918 | mean a new shared library has been detected as loaded, so | |
1919 | take the opportunity to check if breakpoints we think are | |
1920 | inserted, still are. Note that it isn't guaranteed that | |
1921 | we'll see this when a shared library is loaded, and nor will | |
1922 | we see this for unloads (although breakpoints in unloaded | |
1923 | libraries shouldn't trigger), as GDB may not find symbols for | |
1924 | the library at all. We also re-validate breakpoints when we | |
1925 | see a second GDB breakpoint for the same address, and or when | |
1926 | we access breakpoint shadows. */ | |
1927 | validate_breakpoints (); | |
1928 | ||
fa593d66 PA |
1929 | if (target_supports_tracepoints ()) |
1930 | tracepoint_look_up_symbols (); | |
1931 | ||
2d717e4f | 1932 | if (target_running () && the_target->look_up_symbols != NULL) |
2f2893d9 DJ |
1933 | (*the_target->look_up_symbols) (); |
1934 | ||
ce3a066d DJ |
1935 | strcpy (own_buf, "OK"); |
1936 | return; | |
1937 | } | |
1938 | ||
db42f210 | 1939 | if (!disable_packet_qfThreadInfo) |
0d62e5e8 | 1940 | { |
db42f210 | 1941 | if (strcmp ("qfThreadInfo", own_buf) == 0) |
0d62e5e8 | 1942 | { |
95954743 PA |
1943 | ptid_t gdb_id; |
1944 | ||
db42f210 | 1945 | require_running (own_buf); |
649ebbca | 1946 | thread_ptr = get_first_inferior (&all_threads); |
95954743 PA |
1947 | |
1948 | *own_buf++ = 'm'; | |
1949 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
1950 | write_ptid (own_buf, gdb_id); | |
0d62e5e8 DJ |
1951 | thread_ptr = thread_ptr->next; |
1952 | return; | |
1953 | } | |
db42f210 PA |
1954 | |
1955 | if (strcmp ("qsThreadInfo", own_buf) == 0) | |
0d62e5e8 | 1956 | { |
95954743 PA |
1957 | ptid_t gdb_id; |
1958 | ||
db42f210 PA |
1959 | require_running (own_buf); |
1960 | if (thread_ptr != NULL) | |
1961 | { | |
95954743 PA |
1962 | *own_buf++ = 'm'; |
1963 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
1964 | write_ptid (own_buf, gdb_id); | |
db42f210 PA |
1965 | thread_ptr = thread_ptr->next; |
1966 | return; | |
1967 | } | |
1968 | else | |
1969 | { | |
1970 | sprintf (own_buf, "l"); | |
1971 | return; | |
1972 | } | |
0d62e5e8 DJ |
1973 | } |
1974 | } | |
aa691b87 | 1975 | |
52fb6437 NS |
1976 | if (the_target->read_offsets != NULL |
1977 | && strcmp ("qOffsets", own_buf) == 0) | |
1978 | { | |
1979 | CORE_ADDR text, data; | |
2d717e4f DJ |
1980 | |
1981 | require_running (own_buf); | |
52fb6437 NS |
1982 | if (the_target->read_offsets (&text, &data)) |
1983 | sprintf (own_buf, "Text=%lX;Data=%lX;Bss=%lX", | |
1984 | (long)text, (long)data, (long)data); | |
1985 | else | |
1986 | write_enn (own_buf); | |
1b3f6016 | 1987 | |
52fb6437 NS |
1988 | return; |
1989 | } | |
1990 | ||
be2a5f71 | 1991 | /* Protocol features query. */ |
61012eef | 1992 | if (startswith (own_buf, "qSupported") |
be2a5f71 DJ |
1993 | && (own_buf[10] == ':' || own_buf[10] == '\0')) |
1994 | { | |
95954743 | 1995 | char *p = &own_buf[10]; |
fa593d66 | 1996 | int gdb_supports_qRelocInsn = 0; |
95954743 | 1997 | |
1570b33e L |
1998 | /* Start processing qSupported packet. */ |
1999 | target_process_qsupported (NULL); | |
2000 | ||
95954743 PA |
2001 | /* Process each feature being provided by GDB. The first |
2002 | feature will follow a ':', and latter features will follow | |
2003 | ';'. */ | |
2004 | if (*p == ':') | |
d149dd1d PA |
2005 | { |
2006 | char **qsupported = NULL; | |
2007 | int count = 0; | |
2008 | int i; | |
2009 | ||
2010 | /* Two passes, to avoid nested strtok calls in | |
2011 | target_process_qsupported. */ | |
2012 | for (p = strtok (p + 1, ";"); | |
2013 | p != NULL; | |
2014 | p = strtok (NULL, ";")) | |
2015 | { | |
2016 | count++; | |
2017 | qsupported = xrealloc (qsupported, count * sizeof (char *)); | |
2018 | qsupported[count - 1] = xstrdup (p); | |
2019 | } | |
2020 | ||
2021 | for (i = 0; i < count; i++) | |
2022 | { | |
2023 | p = qsupported[i]; | |
2024 | if (strcmp (p, "multiprocess+") == 0) | |
2025 | { | |
2026 | /* GDB supports and wants multi-process support if | |
2027 | possible. */ | |
2028 | if (target_supports_multi_process ()) | |
2029 | multi_process = 1; | |
2030 | } | |
fa593d66 PA |
2031 | else if (strcmp (p, "qRelocInsn+") == 0) |
2032 | { | |
2033 | /* GDB supports relocate instruction requests. */ | |
2034 | gdb_supports_qRelocInsn = 1; | |
2035 | } | |
1ec68e26 PA |
2036 | else if (strcmp (p, "swbreak+") == 0) |
2037 | { | |
2038 | /* GDB wants us to report whether a trap is caused | |
2039 | by a software breakpoint and for us to handle PC | |
2040 | adjustment if necessary on this target. */ | |
2041 | if (target_supports_stopped_by_sw_breakpoint ()) | |
2042 | swbreak_feature = 1; | |
2043 | } | |
2044 | else if (strcmp (p, "hwbreak+") == 0) | |
2045 | { | |
2046 | /* GDB wants us to report whether a trap is caused | |
2047 | by a hardware breakpoint. */ | |
2048 | if (target_supports_stopped_by_hw_breakpoint ()) | |
2049 | hwbreak_feature = 1; | |
2050 | } | |
89245bc0 DB |
2051 | else if (strcmp (p, "fork-events+") == 0) |
2052 | { | |
2053 | /* GDB supports and wants fork events if possible. */ | |
2054 | if (target_supports_fork_events ()) | |
2055 | report_fork_events = 1; | |
2056 | } | |
2057 | else if (strcmp (p, "vfork-events+") == 0) | |
2058 | { | |
2059 | /* GDB supports and wants vfork events if possible. */ | |
2060 | if (target_supports_vfork_events ()) | |
2061 | report_vfork_events = 1; | |
2062 | } | |
d149dd1d PA |
2063 | else |
2064 | target_process_qsupported (p); | |
2065 | ||
2066 | free (p); | |
2067 | } | |
2068 | ||
2069 | free (qsupported); | |
2070 | } | |
95954743 | 2071 | |
9b224c5e PA |
2072 | sprintf (own_buf, |
2073 | "PacketSize=%x;QPassSignals+;QProgramSignals+", | |
2074 | PBUFSIZ - 1); | |
0876f84a | 2075 | |
2268b414 | 2076 | if (the_target->qxfer_libraries_svr4 != NULL) |
b1fbec62 GB |
2077 | strcat (own_buf, ";qXfer:libraries-svr4:read+" |
2078 | ";augmented-libraries-svr4-read+"); | |
2268b414 JK |
2079 | else |
2080 | { | |
2081 | /* We do not have any hook to indicate whether the non-SVR4 target | |
2082 | backend supports qXfer:libraries:read, so always report it. */ | |
2083 | strcat (own_buf, ";qXfer:libraries:read+"); | |
2084 | } | |
255e7678 | 2085 | |
0876f84a | 2086 | if (the_target->read_auxv != NULL) |
9f2e1e63 | 2087 | strcat (own_buf, ";qXfer:auxv:read+"); |
2d717e4f | 2088 | |
0e7f50da UW |
2089 | if (the_target->qxfer_spu != NULL) |
2090 | strcat (own_buf, ";qXfer:spu:read+;qXfer:spu:write+"); | |
0876f84a | 2091 | |
4aa995e1 PA |
2092 | if (the_target->qxfer_siginfo != NULL) |
2093 | strcat (own_buf, ";qXfer:siginfo:read+;qXfer:siginfo:write+"); | |
2094 | ||
78d85199 YQ |
2095 | if (the_target->read_loadmap != NULL) |
2096 | strcat (own_buf, ";qXfer:fdpic:read+"); | |
2097 | ||
221c031f UW |
2098 | /* We always report qXfer:features:read, as targets may |
2099 | install XML files on a subsequent call to arch_setup. | |
2100 | If we reported to GDB on startup that we don't support | |
2101 | qXfer:feature:read at all, we will never be re-queried. */ | |
2102 | strcat (own_buf, ";qXfer:features:read+"); | |
23181151 | 2103 | |
a6f3e723 SL |
2104 | if (transport_is_reliable) |
2105 | strcat (own_buf, ";QStartNoAckMode+"); | |
07e059b5 VP |
2106 | |
2107 | if (the_target->qxfer_osdata != NULL) | |
1b3f6016 | 2108 | strcat (own_buf, ";qXfer:osdata:read+"); |
07e059b5 | 2109 | |
cf8fd78b PA |
2110 | if (target_supports_multi_process ()) |
2111 | strcat (own_buf, ";multiprocess+"); | |
95954743 | 2112 | |
89245bc0 DB |
2113 | if (target_supports_fork_events ()) |
2114 | strcat (own_buf, ";fork-events+"); | |
2115 | ||
2116 | if (target_supports_vfork_events ()) | |
2117 | strcat (own_buf, ";vfork-events+"); | |
2118 | ||
bd99dc85 PA |
2119 | if (target_supports_non_stop ()) |
2120 | strcat (own_buf, ";QNonStop+"); | |
2121 | ||
03583c20 UW |
2122 | if (target_supports_disable_randomization ()) |
2123 | strcat (own_buf, ";QDisableRandomization+"); | |
2124 | ||
dc146f7c VP |
2125 | strcat (own_buf, ";qXfer:threads:read+"); |
2126 | ||
219f2f23 PA |
2127 | if (target_supports_tracepoints ()) |
2128 | { | |
2129 | strcat (own_buf, ";ConditionalTracepoints+"); | |
2130 | strcat (own_buf, ";TraceStateVariables+"); | |
2131 | strcat (own_buf, ";TracepointSource+"); | |
8336d594 | 2132 | strcat (own_buf, ";DisconnectedTracing+"); |
fa593d66 PA |
2133 | if (gdb_supports_qRelocInsn && target_supports_fast_tracepoints ()) |
2134 | strcat (own_buf, ";FastTracepoints+"); | |
0fb4aa4b | 2135 | strcat (own_buf, ";StaticTracepoints+"); |
1e4d1764 | 2136 | strcat (own_buf, ";InstallInTrace+"); |
0fb4aa4b | 2137 | strcat (own_buf, ";qXfer:statictrace:read+"); |
b3b9301e | 2138 | strcat (own_buf, ";qXfer:traceframe-info:read+"); |
d248b706 | 2139 | strcat (own_buf, ";EnableDisableTracepoints+"); |
f6f899bf | 2140 | strcat (own_buf, ";QTBuffer:size+"); |
3065dfb6 | 2141 | strcat (own_buf, ";tracenz+"); |
219f2f23 PA |
2142 | } |
2143 | ||
d3ce09f5 | 2144 | /* Support target-side breakpoint conditions and commands. */ |
45614f15 YQ |
2145 | if (target_supports_conditional_breakpoints ()) |
2146 | strcat (own_buf, ";ConditionalBreakpoints+"); | |
d3ce09f5 | 2147 | strcat (own_buf, ";BreakpointCommands+"); |
9f3a5c85 | 2148 | |
d1feda86 YQ |
2149 | if (target_supports_agent ()) |
2150 | strcat (own_buf, ";QAgent+"); | |
2151 | ||
043c3577 | 2152 | supported_btrace_packets (own_buf); |
9accd112 | 2153 | |
1ec68e26 PA |
2154 | if (target_supports_stopped_by_sw_breakpoint ()) |
2155 | strcat (own_buf, ";swbreak+"); | |
2156 | ||
2157 | if (target_supports_stopped_by_hw_breakpoint ()) | |
2158 | strcat (own_buf, ";hwbreak+"); | |
2159 | ||
e57f1de3 GB |
2160 | if (the_target->pid_to_exec_file != NULL) |
2161 | strcat (own_buf, ";qXfer:exec-file:read+"); | |
2162 | ||
14d2069a GB |
2163 | /* Reinitialize components as needed for the new connection. */ |
2164 | hostio_handle_new_gdb_connection (); | |
de0d863e DB |
2165 | target_handle_new_gdb_connection (); |
2166 | ||
be2a5f71 DJ |
2167 | return; |
2168 | } | |
2169 | ||
dae5f5cf DJ |
2170 | /* Thread-local storage support. */ |
2171 | if (the_target->get_tls_address != NULL | |
61012eef | 2172 | && startswith (own_buf, "qGetTLSAddr:")) |
dae5f5cf DJ |
2173 | { |
2174 | char *p = own_buf + 12; | |
5b1c542e | 2175 | CORE_ADDR parts[2], address = 0; |
dae5f5cf | 2176 | int i, err; |
95954743 | 2177 | ptid_t ptid = null_ptid; |
dae5f5cf | 2178 | |
2d717e4f DJ |
2179 | require_running (own_buf); |
2180 | ||
dae5f5cf DJ |
2181 | for (i = 0; i < 3; i++) |
2182 | { | |
2183 | char *p2; | |
2184 | int len; | |
2185 | ||
2186 | if (p == NULL) | |
2187 | break; | |
2188 | ||
2189 | p2 = strchr (p, ','); | |
2190 | if (p2) | |
2191 | { | |
2192 | len = p2 - p; | |
2193 | p2++; | |
2194 | } | |
2195 | else | |
2196 | { | |
2197 | len = strlen (p); | |
2198 | p2 = NULL; | |
2199 | } | |
2200 | ||
5b1c542e | 2201 | if (i == 0) |
95954743 | 2202 | ptid = read_ptid (p, NULL); |
5b1c542e PA |
2203 | else |
2204 | decode_address (&parts[i - 1], p, len); | |
dae5f5cf DJ |
2205 | p = p2; |
2206 | } | |
2207 | ||
2208 | if (p != NULL || i < 3) | |
2209 | err = 1; | |
2210 | else | |
2211 | { | |
e09875d4 | 2212 | struct thread_info *thread = find_thread_ptid (ptid); |
dae5f5cf DJ |
2213 | |
2214 | if (thread == NULL) | |
2215 | err = 2; | |
2216 | else | |
5b1c542e | 2217 | err = the_target->get_tls_address (thread, parts[0], parts[1], |
dae5f5cf DJ |
2218 | &address); |
2219 | } | |
2220 | ||
2221 | if (err == 0) | |
2222 | { | |
c6f46ca0 | 2223 | strcpy (own_buf, paddress(address)); |
dae5f5cf DJ |
2224 | return; |
2225 | } | |
2226 | else if (err > 0) | |
2227 | { | |
2228 | write_enn (own_buf); | |
2229 | return; | |
2230 | } | |
2231 | ||
2232 | /* Otherwise, pretend we do not understand this packet. */ | |
2233 | } | |
2234 | ||
711e434b PM |
2235 | /* Windows OS Thread Information Block address support. */ |
2236 | if (the_target->get_tib_address != NULL | |
61012eef | 2237 | && startswith (own_buf, "qGetTIBAddr:")) |
711e434b PM |
2238 | { |
2239 | char *annex; | |
2240 | int n; | |
2241 | CORE_ADDR tlb; | |
2242 | ptid_t ptid = read_ptid (own_buf + 12, &annex); | |
2243 | ||
2244 | n = (*the_target->get_tib_address) (ptid, &tlb); | |
2245 | if (n == 1) | |
2246 | { | |
c6f46ca0 | 2247 | strcpy (own_buf, paddress(tlb)); |
711e434b PM |
2248 | return; |
2249 | } | |
2250 | else if (n == 0) | |
2251 | { | |
2252 | write_enn (own_buf); | |
2253 | return; | |
2254 | } | |
2255 | return; | |
2256 | } | |
2257 | ||
c74d0ad8 | 2258 | /* Handle "monitor" commands. */ |
61012eef | 2259 | if (startswith (own_buf, "qRcmd,")) |
c74d0ad8 | 2260 | { |
aef93bd7 | 2261 | char *mon = malloc (PBUFSIZ); |
c74d0ad8 DJ |
2262 | int len = strlen (own_buf + 6); |
2263 | ||
aef93bd7 DE |
2264 | if (mon == NULL) |
2265 | { | |
2266 | write_enn (own_buf); | |
2267 | return; | |
2268 | } | |
2269 | ||
ff0e980e TT |
2270 | if ((len % 2) != 0 |
2271 | || hex2bin (own_buf + 6, (gdb_byte *) mon, len / 2) != len / 2) | |
c74d0ad8 DJ |
2272 | { |
2273 | write_enn (own_buf); | |
2274 | free (mon); | |
2275 | return; | |
2276 | } | |
2277 | mon[len / 2] = '\0'; | |
2278 | ||
2279 | write_ok (own_buf); | |
2280 | ||
cdbfd419 PP |
2281 | if (the_target->handle_monitor_command == NULL |
2282 | || (*the_target->handle_monitor_command) (mon) == 0) | |
2283 | /* Default processing. */ | |
d73f2619 | 2284 | handle_monitor_command (mon, own_buf); |
c74d0ad8 DJ |
2285 | |
2286 | free (mon); | |
2287 | return; | |
2288 | } | |
2289 | ||
61012eef | 2290 | if (startswith (own_buf, "qSearch:memory:")) |
08388c79 DE |
2291 | { |
2292 | require_running (own_buf); | |
2293 | handle_search_memory (own_buf, packet_len); | |
2294 | return; | |
2295 | } | |
2296 | ||
95954743 | 2297 | if (strcmp (own_buf, "qAttached") == 0 |
61012eef | 2298 | || startswith (own_buf, "qAttached:")) |
0b16c5cf | 2299 | { |
95954743 PA |
2300 | struct process_info *process; |
2301 | ||
2302 | if (own_buf[sizeof ("qAttached") - 1]) | |
2303 | { | |
2304 | int pid = strtoul (own_buf + sizeof ("qAttached:") - 1, NULL, 16); | |
2305 | process = (struct process_info *) | |
2306 | find_inferior_id (&all_processes, pid_to_ptid (pid)); | |
2307 | } | |
2308 | else | |
2309 | { | |
2310 | require_running (own_buf); | |
2311 | process = current_process (); | |
2312 | } | |
2313 | ||
2314 | if (process == NULL) | |
2315 | { | |
2316 | write_enn (own_buf); | |
2317 | return; | |
2318 | } | |
2319 | ||
2320 | strcpy (own_buf, process->attached ? "1" : "0"); | |
0b16c5cf PA |
2321 | return; |
2322 | } | |
2323 | ||
61012eef | 2324 | if (startswith (own_buf, "qCRC:")) |
30ba68cb MS |
2325 | { |
2326 | /* CRC check (compare-section). */ | |
2327 | char *comma; | |
aca22551 | 2328 | ULONGEST base; |
30ba68cb MS |
2329 | int len; |
2330 | unsigned long long crc; | |
2331 | ||
2332 | require_running (own_buf); | |
aca22551 | 2333 | comma = unpack_varlen_hex (own_buf + 5, &base); |
30ba68cb MS |
2334 | if (*comma++ != ',') |
2335 | { | |
2336 | write_enn (own_buf); | |
2337 | return; | |
2338 | } | |
2339 | len = strtoul (comma, NULL, 16); | |
2340 | crc = crc32 (base, len, 0xffffffff); | |
2341 | /* Check for memory failure. */ | |
2342 | if (crc == (unsigned long long) -1) | |
2343 | { | |
2344 | write_enn (own_buf); | |
2345 | return; | |
2346 | } | |
2347 | sprintf (own_buf, "C%lx", (unsigned long) crc); | |
2348 | return; | |
2349 | } | |
2350 | ||
d08aafef PA |
2351 | if (handle_qxfer (own_buf, packet_len, new_packet_len_p)) |
2352 | return; | |
2353 | ||
219f2f23 PA |
2354 | if (target_supports_tracepoints () && handle_tracepoint_query (own_buf)) |
2355 | return; | |
2356 | ||
ce3a066d DJ |
2357 | /* Otherwise we didn't know what packet it was. Say we didn't |
2358 | understand it. */ | |
2359 | own_buf[0] = 0; | |
2360 | } | |
2361 | ||
ce1a5b52 | 2362 | static void gdb_wants_all_threads_stopped (void); |
b7ea362b PA |
2363 | static void resume (struct thread_resume *actions, size_t n); |
2364 | ||
649ebbca DE |
2365 | /* The callback that is passed to visit_actioned_threads. */ |
2366 | typedef int (visit_actioned_threads_callback_ftype) | |
2367 | (const struct thread_resume *, struct thread_info *); | |
2368 | ||
2369 | /* Struct to pass data to visit_actioned_threads. */ | |
2370 | ||
2371 | struct visit_actioned_threads_data | |
2372 | { | |
2373 | const struct thread_resume *actions; | |
2374 | size_t num_actions; | |
2375 | visit_actioned_threads_callback_ftype *callback; | |
2376 | }; | |
2377 | ||
b7ea362b PA |
2378 | /* Call CALLBACK for any thread to which ACTIONS applies to. Returns |
2379 | true if CALLBACK returns true. Returns false if no matching thread | |
649ebbca DE |
2380 | is found or CALLBACK results false. |
2381 | Note: This function is itself a callback for find_inferior. */ | |
b7ea362b PA |
2382 | |
2383 | static int | |
649ebbca | 2384 | visit_actioned_threads (struct inferior_list_entry *entry, void *datap) |
b7ea362b | 2385 | { |
649ebbca DE |
2386 | struct visit_actioned_threads_data *data = datap; |
2387 | const struct thread_resume *actions = data->actions; | |
2388 | size_t num_actions = data->num_actions; | |
2389 | visit_actioned_threads_callback_ftype *callback = data->callback; | |
2390 | size_t i; | |
b7ea362b | 2391 | |
649ebbca | 2392 | for (i = 0; i < num_actions; i++) |
b7ea362b | 2393 | { |
649ebbca | 2394 | const struct thread_resume *action = &actions[i]; |
b7ea362b | 2395 | |
649ebbca DE |
2396 | if (ptid_equal (action->thread, minus_one_ptid) |
2397 | || ptid_equal (action->thread, entry->id) | |
2398 | || ((ptid_get_pid (action->thread) | |
2399 | == ptid_get_pid (entry->id)) | |
2400 | && ptid_get_lwp (action->thread) == -1)) | |
b7ea362b | 2401 | { |
649ebbca | 2402 | struct thread_info *thread = (struct thread_info *) entry; |
b7ea362b | 2403 | |
649ebbca DE |
2404 | if ((*callback) (action, thread)) |
2405 | return 1; | |
b7ea362b PA |
2406 | } |
2407 | } | |
2408 | ||
2409 | return 0; | |
2410 | } | |
2411 | ||
2412 | /* Callback for visit_actioned_threads. If the thread has a pending | |
2413 | status to report, report it now. */ | |
2414 | ||
2415 | static int | |
2416 | handle_pending_status (const struct thread_resume *resumption, | |
2417 | struct thread_info *thread) | |
2418 | { | |
2419 | if (thread->status_pending_p) | |
2420 | { | |
2421 | thread->status_pending_p = 0; | |
2422 | ||
2423 | last_status = thread->last_status; | |
2424 | last_ptid = thread->entry.id; | |
2425 | prepare_resume_reply (own_buf, last_ptid, &last_status); | |
2426 | return 1; | |
2427 | } | |
2428 | return 0; | |
2429 | } | |
ce1a5b52 | 2430 | |
64386c31 DJ |
2431 | /* Parse vCont packets. */ |
2432 | void | |
5b1c542e | 2433 | handle_v_cont (char *own_buf) |
64386c31 DJ |
2434 | { |
2435 | char *p, *q; | |
2436 | int n = 0, i = 0; | |
2bd7c093 | 2437 | struct thread_resume *resume_info; |
95954743 | 2438 | struct thread_resume default_action = {{0}}; |
64386c31 DJ |
2439 | |
2440 | /* Count the number of semicolons in the packet. There should be one | |
2441 | for every action. */ | |
2442 | p = &own_buf[5]; | |
2443 | while (p) | |
2444 | { | |
2445 | n++; | |
2446 | p++; | |
2447 | p = strchr (p, ';'); | |
2448 | } | |
2bd7c093 PA |
2449 | |
2450 | resume_info = malloc (n * sizeof (resume_info[0])); | |
aef93bd7 DE |
2451 | if (resume_info == NULL) |
2452 | goto err; | |
64386c31 | 2453 | |
64386c31 | 2454 | p = &own_buf[5]; |
64386c31 DJ |
2455 | while (*p) |
2456 | { | |
2457 | p++; | |
2458 | ||
c2d6af84 PA |
2459 | memset (&resume_info[i], 0, sizeof resume_info[i]); |
2460 | ||
64386c31 | 2461 | if (p[0] == 's' || p[0] == 'S') |
bd99dc85 | 2462 | resume_info[i].kind = resume_step; |
c2d6af84 PA |
2463 | else if (p[0] == 'r') |
2464 | resume_info[i].kind = resume_step; | |
64386c31 | 2465 | else if (p[0] == 'c' || p[0] == 'C') |
bd99dc85 PA |
2466 | resume_info[i].kind = resume_continue; |
2467 | else if (p[0] == 't') | |
2468 | resume_info[i].kind = resume_stop; | |
64386c31 DJ |
2469 | else |
2470 | goto err; | |
2471 | ||
2472 | if (p[0] == 'S' || p[0] == 'C') | |
2473 | { | |
2474 | int sig; | |
2475 | sig = strtol (p + 1, &q, 16); | |
2476 | if (p == q) | |
2477 | goto err; | |
2478 | p = q; | |
2479 | ||
2ea28649 | 2480 | if (!gdb_signal_to_host_p (sig)) |
64386c31 | 2481 | goto err; |
2ea28649 | 2482 | resume_info[i].sig = gdb_signal_to_host (sig); |
64386c31 | 2483 | } |
c2d6af84 PA |
2484 | else if (p[0] == 'r') |
2485 | { | |
6740dc9c | 2486 | ULONGEST addr; |
c2d6af84 | 2487 | |
6740dc9c PA |
2488 | p = unpack_varlen_hex (p + 1, &addr); |
2489 | resume_info[i].step_range_start = addr; | |
c2d6af84 | 2490 | |
6740dc9c PA |
2491 | if (*p != ',') |
2492 | goto err; | |
c2d6af84 | 2493 | |
6740dc9c PA |
2494 | p = unpack_varlen_hex (p + 1, &addr); |
2495 | resume_info[i].step_range_end = addr; | |
c2d6af84 | 2496 | } |
64386c31 DJ |
2497 | else |
2498 | { | |
64386c31 DJ |
2499 | p = p + 1; |
2500 | } | |
2501 | ||
2502 | if (p[0] == 0) | |
2503 | { | |
95954743 | 2504 | resume_info[i].thread = minus_one_ptid; |
64386c31 DJ |
2505 | default_action = resume_info[i]; |
2506 | ||
2507 | /* Note: we don't increment i here, we'll overwrite this entry | |
2508 | the next time through. */ | |
2509 | } | |
2510 | else if (p[0] == ':') | |
2511 | { | |
95954743 | 2512 | ptid_t ptid = read_ptid (p + 1, &q); |
a06660f7 | 2513 | |
64386c31 DJ |
2514 | if (p == q) |
2515 | goto err; | |
2516 | p = q; | |
2517 | if (p[0] != ';' && p[0] != 0) | |
2518 | goto err; | |
2519 | ||
95954743 | 2520 | resume_info[i].thread = ptid; |
a06660f7 | 2521 | |
64386c31 DJ |
2522 | i++; |
2523 | } | |
2524 | } | |
2525 | ||
2bd7c093 PA |
2526 | if (i < n) |
2527 | resume_info[i] = default_action; | |
64386c31 | 2528 | |
0bfdf32f | 2529 | set_desired_thread (0); |
64386c31 | 2530 | |
b7ea362b PA |
2531 | resume (resume_info, n); |
2532 | free (resume_info); | |
2533 | return; | |
2534 | ||
2535 | err: | |
2536 | write_enn (own_buf); | |
2537 | free (resume_info); | |
2538 | return; | |
2539 | } | |
2540 | ||
2541 | /* Resume target with ACTIONS, an array of NUM_ACTIONS elements. */ | |
2542 | ||
2543 | static void | |
2544 | resume (struct thread_resume *actions, size_t num_actions) | |
2545 | { | |
bd99dc85 | 2546 | if (!non_stop) |
b7ea362b PA |
2547 | { |
2548 | /* Check if among the threads that GDB wants actioned, there's | |
2549 | one with a pending status to report. If so, skip actually | |
2550 | resuming/stopping and report the pending event | |
2551 | immediately. */ | |
649ebbca DE |
2552 | struct visit_actioned_threads_data data; |
2553 | ||
2554 | data.actions = actions; | |
2555 | data.num_actions = num_actions; | |
2556 | data.callback = handle_pending_status; | |
2557 | if (find_inferior (&all_threads, visit_actioned_threads, &data) != NULL) | |
b7ea362b | 2558 | return; |
bd99dc85 | 2559 | |
b7ea362b PA |
2560 | enable_async_io (); |
2561 | } | |
64386c31 | 2562 | |
b7ea362b | 2563 | (*the_target->resume) (actions, num_actions); |
64386c31 | 2564 | |
bd99dc85 PA |
2565 | if (non_stop) |
2566 | write_ok (own_buf); | |
2567 | else | |
2568 | { | |
95954743 | 2569 | last_ptid = mywait (minus_one_ptid, &last_status, 0, 1); |
ce1a5b52 | 2570 | |
fa96cb38 PA |
2571 | if (last_status.kind == TARGET_WAITKIND_NO_RESUMED) |
2572 | { | |
2573 | /* No proper RSP support for this yet. At least return | |
2574 | error. */ | |
2575 | sprintf (own_buf, "E.No unwaited-for children left."); | |
2576 | disable_async_io (); | |
2577 | return; | |
2578 | } | |
2579 | ||
d20a8ad9 | 2580 | if (last_status.kind != TARGET_WAITKIND_EXITED |
fa96cb38 PA |
2581 | && last_status.kind != TARGET_WAITKIND_SIGNALLED |
2582 | && last_status.kind != TARGET_WAITKIND_NO_RESUMED) | |
0bfdf32f | 2583 | current_thread->last_status = last_status; |
d20a8ad9 | 2584 | |
ce1a5b52 PA |
2585 | /* From the client's perspective, all-stop mode always stops all |
2586 | threads implicitly (and the target backend has already done | |
2587 | so by now). Tag all threads as "want-stopped", so we don't | |
2588 | resume them implicitly without the client telling us to. */ | |
2589 | gdb_wants_all_threads_stopped (); | |
bd99dc85 PA |
2590 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
2591 | disable_async_io (); | |
6bd31874 JB |
2592 | |
2593 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
2594 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2595 | mourn_inferior (find_process_pid (ptid_get_pid (last_ptid))); | |
bd99dc85 | 2596 | } |
64386c31 DJ |
2597 | } |
2598 | ||
2d717e4f DJ |
2599 | /* Attach to a new program. Return 1 if successful, 0 if failure. */ |
2600 | int | |
5b1c542e | 2601 | handle_v_attach (char *own_buf) |
2d717e4f DJ |
2602 | { |
2603 | int pid; | |
2604 | ||
2605 | pid = strtol (own_buf + 8, NULL, 16); | |
5b1c542e | 2606 | if (pid != 0 && attach_inferior (pid) == 0) |
2d717e4f | 2607 | { |
aeba519e PA |
2608 | /* Don't report shared library events after attaching, even if |
2609 | some libraries are preloaded. GDB will always poll the | |
2610 | library list. Avoids the "stopped by shared library event" | |
2611 | notice on the GDB side. */ | |
2612 | dlls_changed = 0; | |
bd99dc85 PA |
2613 | |
2614 | if (non_stop) | |
2615 | { | |
2616 | /* In non-stop, we don't send a resume reply. Stop events | |
2617 | will follow up using the normal notification | |
2618 | mechanism. */ | |
2619 | write_ok (own_buf); | |
2620 | } | |
2621 | else | |
2622 | prepare_resume_reply (own_buf, last_ptid, &last_status); | |
2623 | ||
2d717e4f DJ |
2624 | return 1; |
2625 | } | |
2626 | else | |
2627 | { | |
2628 | write_enn (own_buf); | |
2629 | return 0; | |
2630 | } | |
2631 | } | |
2632 | ||
2633 | /* Run a new program. Return 1 if successful, 0 if failure. */ | |
2634 | static int | |
5b1c542e | 2635 | handle_v_run (char *own_buf) |
2d717e4f | 2636 | { |
aef93bd7 | 2637 | char *p, *next_p, **new_argv; |
2d717e4f DJ |
2638 | int i, new_argc; |
2639 | ||
2640 | new_argc = 0; | |
2641 | for (p = own_buf + strlen ("vRun;"); p && *p; p = strchr (p, ';')) | |
2642 | { | |
2643 | p++; | |
2644 | new_argc++; | |
2645 | } | |
2646 | ||
aef93bd7 DE |
2647 | new_argv = calloc (new_argc + 2, sizeof (char *)); |
2648 | if (new_argv == NULL) | |
2649 | { | |
2650 | write_enn (own_buf); | |
2651 | return 0; | |
2652 | } | |
2653 | ||
2d717e4f DJ |
2654 | i = 0; |
2655 | for (p = own_buf + strlen ("vRun;"); *p; p = next_p) | |
2656 | { | |
2657 | next_p = strchr (p, ';'); | |
2658 | if (next_p == NULL) | |
2659 | next_p = p + strlen (p); | |
2660 | ||
2661 | if (i == 0 && p == next_p) | |
2662 | new_argv[i] = NULL; | |
2663 | else | |
2664 | { | |
aef93bd7 | 2665 | /* FIXME: Fail request if out of memory instead of dying. */ |
bca929d3 | 2666 | new_argv[i] = xmalloc (1 + (next_p - p) / 2); |
ff0e980e | 2667 | hex2bin (p, (gdb_byte *) new_argv[i], (next_p - p) / 2); |
2d717e4f DJ |
2668 | new_argv[i][(next_p - p) / 2] = '\0'; |
2669 | } | |
2670 | ||
2671 | if (*next_p) | |
2672 | next_p++; | |
2673 | i++; | |
2674 | } | |
2675 | new_argv[i] = NULL; | |
2676 | ||
2677 | if (new_argv[0] == NULL) | |
2678 | { | |
f142445f DJ |
2679 | /* GDB didn't specify a program to run. Use the program from the |
2680 | last run with the new argument list. */ | |
9b710a42 | 2681 | |
2d717e4f DJ |
2682 | if (program_argv == NULL) |
2683 | { | |
2684 | write_enn (own_buf); | |
b2c04452 | 2685 | freeargv (new_argv); |
2d717e4f DJ |
2686 | return 0; |
2687 | } | |
2688 | ||
aef93bd7 DE |
2689 | new_argv[0] = strdup (program_argv[0]); |
2690 | if (new_argv[0] == NULL) | |
2691 | { | |
aef93bd7 | 2692 | write_enn (own_buf); |
b2c04452 | 2693 | freeargv (new_argv); |
aef93bd7 | 2694 | return 0; |
1b3f6016 | 2695 | } |
2d717e4f | 2696 | } |
f142445f | 2697 | |
aef93bd7 DE |
2698 | /* Free the old argv and install the new one. */ |
2699 | freeargv (program_argv); | |
f142445f | 2700 | program_argv = new_argv; |
2d717e4f | 2701 | |
5b1c542e PA |
2702 | start_inferior (program_argv); |
2703 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
2d717e4f | 2704 | { |
5b1c542e | 2705 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
bd99dc85 PA |
2706 | |
2707 | /* In non-stop, sending a resume reply doesn't set the general | |
2708 | thread, but GDB assumes a vRun sets it (this is so GDB can | |
2709 | query which is the main thread of the new inferior. */ | |
2710 | if (non_stop) | |
2711 | general_thread = last_ptid; | |
2712 | ||
2d717e4f DJ |
2713 | return 1; |
2714 | } | |
2715 | else | |
2716 | { | |
2717 | write_enn (own_buf); | |
2718 | return 0; | |
2719 | } | |
2720 | } | |
2721 | ||
95954743 PA |
2722 | /* Kill process. Return 1 if successful, 0 if failure. */ |
2723 | int | |
2724 | handle_v_kill (char *own_buf) | |
2725 | { | |
2726 | int pid; | |
2727 | char *p = &own_buf[6]; | |
0f54c268 PM |
2728 | if (multi_process) |
2729 | pid = strtol (p, NULL, 16); | |
2730 | else | |
2731 | pid = signal_pid; | |
95954743 PA |
2732 | if (pid != 0 && kill_inferior (pid) == 0) |
2733 | { | |
2734 | last_status.kind = TARGET_WAITKIND_SIGNALLED; | |
a493e3e2 | 2735 | last_status.value.sig = GDB_SIGNAL_KILL; |
95954743 PA |
2736 | last_ptid = pid_to_ptid (pid); |
2737 | discard_queued_stop_replies (pid); | |
2738 | write_ok (own_buf); | |
2739 | return 1; | |
2740 | } | |
2741 | else | |
2742 | { | |
2743 | write_enn (own_buf); | |
2744 | return 0; | |
2745 | } | |
2746 | } | |
2747 | ||
64386c31 DJ |
2748 | /* Handle all of the extended 'v' packets. */ |
2749 | void | |
5b1c542e | 2750 | handle_v_requests (char *own_buf, int packet_len, int *new_packet_len) |
64386c31 | 2751 | { |
db42f210 | 2752 | if (!disable_packet_vCont) |
64386c31 | 2753 | { |
61012eef | 2754 | if (startswith (own_buf, "vCont;")) |
db42f210 PA |
2755 | { |
2756 | require_running (own_buf); | |
5b1c542e | 2757 | handle_v_cont (own_buf); |
db42f210 PA |
2758 | return; |
2759 | } | |
64386c31 | 2760 | |
61012eef | 2761 | if (startswith (own_buf, "vCont?")) |
db42f210 | 2762 | { |
bd99dc85 | 2763 | strcpy (own_buf, "vCont;c;C;s;S;t"); |
c2d6af84 PA |
2764 | if (target_supports_range_stepping ()) |
2765 | { | |
2766 | own_buf = own_buf + strlen (own_buf); | |
2767 | strcpy (own_buf, ";r"); | |
2768 | } | |
db42f210 PA |
2769 | return; |
2770 | } | |
64386c31 DJ |
2771 | } |
2772 | ||
61012eef | 2773 | if (startswith (own_buf, "vFile:") |
a6b151f1 DJ |
2774 | && handle_vFile (own_buf, packet_len, new_packet_len)) |
2775 | return; | |
2776 | ||
61012eef | 2777 | if (startswith (own_buf, "vAttach;")) |
2d717e4f | 2778 | { |
901f9912 | 2779 | if ((!extended_protocol || !multi_process) && target_running ()) |
2d717e4f | 2780 | { |
fd96d250 PA |
2781 | fprintf (stderr, "Already debugging a process\n"); |
2782 | write_enn (own_buf); | |
2783 | return; | |
2d717e4f | 2784 | } |
5b1c542e | 2785 | handle_v_attach (own_buf); |
2d717e4f DJ |
2786 | return; |
2787 | } | |
2788 | ||
61012eef | 2789 | if (startswith (own_buf, "vRun;")) |
2d717e4f | 2790 | { |
901f9912 | 2791 | if ((!extended_protocol || !multi_process) && target_running ()) |
2d717e4f | 2792 | { |
fd96d250 PA |
2793 | fprintf (stderr, "Already debugging a process\n"); |
2794 | write_enn (own_buf); | |
2795 | return; | |
2d717e4f | 2796 | } |
5b1c542e | 2797 | handle_v_run (own_buf); |
2d717e4f DJ |
2798 | return; |
2799 | } | |
2800 | ||
61012eef | 2801 | if (startswith (own_buf, "vKill;")) |
95954743 PA |
2802 | { |
2803 | if (!target_running ()) | |
2804 | { | |
2805 | fprintf (stderr, "No process to kill\n"); | |
2806 | write_enn (own_buf); | |
2807 | return; | |
2808 | } | |
2809 | handle_v_kill (own_buf); | |
2810 | return; | |
2811 | } | |
2812 | ||
14a00470 YQ |
2813 | if (handle_notif_ack (own_buf, packet_len)) |
2814 | return; | |
bd99dc85 | 2815 | |
64386c31 DJ |
2816 | /* Otherwise we didn't know what packet it was. Say we didn't |
2817 | understand it. */ | |
2818 | own_buf[0] = 0; | |
2819 | return; | |
2820 | } | |
2821 | ||
0bfdf32f | 2822 | /* Resume thread and wait for another event. In non-stop mode, |
bd99dc85 PA |
2823 | don't really wait here, but return immediatelly to the event |
2824 | loop. */ | |
1fd7cdc2 | 2825 | static void |
5b1c542e | 2826 | myresume (char *own_buf, int step, int sig) |
64386c31 DJ |
2827 | { |
2828 | struct thread_resume resume_info[2]; | |
2829 | int n = 0; | |
2bd7c093 | 2830 | int valid_cont_thread; |
a20d5e98 | 2831 | |
0bfdf32f | 2832 | set_desired_thread (0); |
64386c31 | 2833 | |
95954743 PA |
2834 | valid_cont_thread = (!ptid_equal (cont_thread, null_ptid) |
2835 | && !ptid_equal (cont_thread, minus_one_ptid)); | |
2bd7c093 PA |
2836 | |
2837 | if (step || sig || valid_cont_thread) | |
64386c31 | 2838 | { |
fbd5db48 | 2839 | resume_info[0].thread = current_ptid; |
bd99dc85 PA |
2840 | if (step) |
2841 | resume_info[0].kind = resume_step; | |
2842 | else | |
2843 | resume_info[0].kind = resume_continue; | |
64386c31 | 2844 | resume_info[0].sig = sig; |
64386c31 DJ |
2845 | n++; |
2846 | } | |
2bd7c093 PA |
2847 | |
2848 | if (!valid_cont_thread) | |
2849 | { | |
95954743 | 2850 | resume_info[n].thread = minus_one_ptid; |
bd99dc85 | 2851 | resume_info[n].kind = resume_continue; |
2bd7c093 PA |
2852 | resume_info[n].sig = 0; |
2853 | n++; | |
2854 | } | |
64386c31 | 2855 | |
b7ea362b | 2856 | resume (resume_info, n); |
bd99dc85 PA |
2857 | } |
2858 | ||
2859 | /* Callback for for_each_inferior. Make a new stop reply for each | |
2860 | stopped thread. */ | |
2861 | ||
95954743 PA |
2862 | static int |
2863 | queue_stop_reply_callback (struct inferior_list_entry *entry, void *arg) | |
bd99dc85 | 2864 | { |
8336d594 | 2865 | struct thread_info *thread = (struct thread_info *) entry; |
bd99dc85 | 2866 | |
8336d594 PA |
2867 | /* For now, assume targets that don't have this callback also don't |
2868 | manage the thread's last_status field. */ | |
2869 | if (the_target->thread_stopped == NULL) | |
95954743 | 2870 | { |
14a00470 YQ |
2871 | struct vstop_notif *new_notif = xmalloc (sizeof (*new_notif)); |
2872 | ||
2873 | new_notif->ptid = entry->id; | |
2874 | new_notif->status = thread->last_status; | |
8336d594 PA |
2875 | /* Pass the last stop reply back to GDB, but don't notify |
2876 | yet. */ | |
14a00470 YQ |
2877 | notif_event_enque (¬if_stop, |
2878 | (struct notif_event *) new_notif); | |
8336d594 PA |
2879 | } |
2880 | else | |
2881 | { | |
2882 | if (thread_stopped (thread)) | |
2883 | { | |
2884 | if (debug_threads) | |
3360c0bf LM |
2885 | { |
2886 | char *status_string | |
2887 | = target_waitstatus_to_string (&thread->last_status); | |
2888 | ||
87ce2a04 DE |
2889 | debug_printf ("Reporting thread %s as already stopped with %s\n", |
2890 | target_pid_to_str (entry->id), | |
2891 | status_string); | |
3360c0bf LM |
2892 | |
2893 | xfree (status_string); | |
2894 | } | |
8336d594 | 2895 | |
d20a8ad9 PA |
2896 | gdb_assert (thread->last_status.kind != TARGET_WAITKIND_IGNORE); |
2897 | ||
8336d594 PA |
2898 | /* Pass the last stop reply back to GDB, but don't notify |
2899 | yet. */ | |
2900 | queue_stop_reply (entry->id, &thread->last_status); | |
2901 | } | |
95954743 PA |
2902 | } |
2903 | ||
2904 | return 0; | |
64386c31 DJ |
2905 | } |
2906 | ||
ce1a5b52 PA |
2907 | /* Set this inferior threads's state as "want-stopped". We won't |
2908 | resume this thread until the client gives us another action for | |
2909 | it. */ | |
8336d594 PA |
2910 | |
2911 | static void | |
2912 | gdb_wants_thread_stopped (struct inferior_list_entry *entry) | |
2913 | { | |
2914 | struct thread_info *thread = (struct thread_info *) entry; | |
2915 | ||
2916 | thread->last_resume_kind = resume_stop; | |
2917 | ||
2918 | if (thread->last_status.kind == TARGET_WAITKIND_IGNORE) | |
2919 | { | |
ce1a5b52 PA |
2920 | /* Most threads are stopped implicitly (all-stop); tag that with |
2921 | signal 0. */ | |
8336d594 | 2922 | thread->last_status.kind = TARGET_WAITKIND_STOPPED; |
a493e3e2 | 2923 | thread->last_status.value.sig = GDB_SIGNAL_0; |
8336d594 PA |
2924 | } |
2925 | } | |
2926 | ||
2927 | /* Set all threads' states as "want-stopped". */ | |
2928 | ||
2929 | static void | |
2930 | gdb_wants_all_threads_stopped (void) | |
2931 | { | |
2932 | for_each_inferior (&all_threads, gdb_wants_thread_stopped); | |
2933 | } | |
2934 | ||
2935 | /* Clear the gdb_detached flag of every process. */ | |
2936 | ||
2937 | static void | |
2938 | gdb_reattached_process (struct inferior_list_entry *entry) | |
2939 | { | |
2940 | struct process_info *process = (struct process_info *) entry; | |
2941 | ||
2942 | process->gdb_detached = 0; | |
2943 | } | |
2944 | ||
b7ea362b PA |
2945 | /* Callback for for_each_inferior. Clear the thread's pending status |
2946 | flag. */ | |
2947 | ||
2948 | static void | |
2949 | clear_pending_status_callback (struct inferior_list_entry *entry) | |
2950 | { | |
2951 | struct thread_info *thread = (struct thread_info *) entry; | |
2952 | ||
2953 | thread->status_pending_p = 0; | |
2954 | } | |
2955 | ||
2956 | /* Callback for for_each_inferior. If the thread is stopped with an | |
2957 | interesting event, mark it as having a pending event. */ | |
2958 | ||
2959 | static void | |
2960 | set_pending_status_callback (struct inferior_list_entry *entry) | |
2961 | { | |
2962 | struct thread_info *thread = (struct thread_info *) entry; | |
2963 | ||
2964 | if (thread->last_status.kind != TARGET_WAITKIND_STOPPED | |
2965 | || (thread->last_status.value.sig != GDB_SIGNAL_0 | |
2966 | /* A breakpoint, watchpoint or finished step from a previous | |
2967 | GDB run isn't considered interesting for a new GDB run. | |
2968 | If we left those pending, the new GDB could consider them | |
2969 | random SIGTRAPs. This leaves out real async traps. We'd | |
2970 | have to peek into the (target-specific) siginfo to | |
2971 | distinguish those. */ | |
2972 | && thread->last_status.value.sig != GDB_SIGNAL_TRAP)) | |
2973 | thread->status_pending_p = 1; | |
2974 | } | |
2975 | ||
2976 | /* Callback for find_inferior. Return true if ENTRY (a thread) has a | |
2977 | pending status to report to GDB. */ | |
2978 | ||
2979 | static int | |
2980 | find_status_pending_thread_callback (struct inferior_list_entry *entry, void *data) | |
2981 | { | |
2982 | struct thread_info *thread = (struct thread_info *) entry; | |
2983 | ||
2984 | return thread->status_pending_p; | |
2985 | } | |
2986 | ||
5b1c542e PA |
2987 | /* Status handler for the '?' packet. */ |
2988 | ||
2989 | static void | |
2990 | handle_status (char *own_buf) | |
2991 | { | |
8336d594 PA |
2992 | /* GDB is connected, don't forward events to the target anymore. */ |
2993 | for_each_inferior (&all_processes, gdb_reattached_process); | |
bd99dc85 PA |
2994 | |
2995 | /* In non-stop mode, we must send a stop reply for each stopped | |
2996 | thread. In all-stop mode, just send one for the first stopped | |
2997 | thread we find. */ | |
2998 | ||
2999 | if (non_stop) | |
3000 | { | |
8336d594 | 3001 | find_inferior (&all_threads, queue_stop_reply_callback, NULL); |
bd99dc85 PA |
3002 | |
3003 | /* The first is sent immediatly. OK is sent if there is no | |
3004 | stopped thread, which is the same handling of the vStopped | |
3005 | packet (by design). */ | |
14a00470 | 3006 | notif_write_event (¬if_stop, own_buf); |
bd99dc85 | 3007 | } |
5b1c542e | 3008 | else |
bd99dc85 | 3009 | { |
b7ea362b PA |
3010 | struct inferior_list_entry *thread = NULL; |
3011 | ||
7984d532 | 3012 | pause_all (0); |
fa593d66 | 3013 | stabilize_threads (); |
8336d594 PA |
3014 | gdb_wants_all_threads_stopped (); |
3015 | ||
b7ea362b PA |
3016 | /* We can only report one status, but we might be coming out of |
3017 | non-stop -- if more than one thread is stopped with | |
3018 | interesting events, leave events for the threads we're not | |
3019 | reporting now pending. They'll be reported the next time the | |
3020 | threads are resumed. Start by marking all interesting events | |
3021 | as pending. */ | |
3022 | for_each_inferior (&all_threads, set_pending_status_callback); | |
3023 | ||
3024 | /* Prefer the last thread that reported an event to GDB (even if | |
3025 | that was a GDB_SIGNAL_TRAP). */ | |
3026 | if (last_status.kind != TARGET_WAITKIND_IGNORE | |
3027 | && last_status.kind != TARGET_WAITKIND_EXITED | |
3028 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
3029 | thread = find_inferior_id (&all_threads, last_ptid); | |
3030 | ||
3031 | /* If the last event thread is not found for some reason, look | |
3032 | for some other thread that might have an event to report. */ | |
3033 | if (thread == NULL) | |
3034 | thread = find_inferior (&all_threads, | |
3035 | find_status_pending_thread_callback, NULL); | |
3036 | ||
3037 | /* If we're still out of luck, simply pick the first thread in | |
3038 | the thread list. */ | |
3039 | if (thread == NULL) | |
649ebbca | 3040 | thread = get_first_inferior (&all_threads); |
b7ea362b PA |
3041 | |
3042 | if (thread != NULL) | |
8336d594 | 3043 | { |
b7ea362b PA |
3044 | struct thread_info *tp = (struct thread_info *) thread; |
3045 | ||
3046 | /* We're reporting this event, so it's no longer | |
3047 | pending. */ | |
3048 | tp->status_pending_p = 0; | |
3049 | ||
3050 | /* GDB assumes the current thread is the thread we're | |
3051 | reporting the status for. */ | |
3052 | general_thread = thread->id; | |
0bfdf32f | 3053 | set_desired_thread (1); |
8336d594 | 3054 | |
b7ea362b PA |
3055 | gdb_assert (tp->last_status.kind != TARGET_WAITKIND_IGNORE); |
3056 | prepare_resume_reply (own_buf, tp->entry.id, &tp->last_status); | |
8336d594 | 3057 | } |
bd99dc85 PA |
3058 | else |
3059 | strcpy (own_buf, "W00"); | |
3060 | } | |
5b1c542e PA |
3061 | } |
3062 | ||
dd24457d DJ |
3063 | static void |
3064 | gdbserver_version (void) | |
3065 | { | |
c16158bc | 3066 | printf ("GNU gdbserver %s%s\n" |
76f2b779 | 3067 | "Copyright (C) 2015 Free Software Foundation, Inc.\n" |
493e2a69 MS |
3068 | "gdbserver is free software, covered by the " |
3069 | "GNU General Public License.\n" | |
dd24457d | 3070 | "This gdbserver was configured as \"%s\"\n", |
c16158bc | 3071 | PKGVERSION, version, host_name); |
dd24457d DJ |
3072 | } |
3073 | ||
0bc68c49 | 3074 | static void |
c16158bc | 3075 | gdbserver_usage (FILE *stream) |
0bc68c49 | 3076 | { |
c16158bc JM |
3077 | fprintf (stream, "Usage:\tgdbserver [OPTIONS] COMM PROG [ARGS ...]\n" |
3078 | "\tgdbserver [OPTIONS] --attach COMM PID\n" | |
3079 | "\tgdbserver [OPTIONS] --multi COMM\n" | |
3080 | "\n" | |
41f98f02 PA |
3081 | "COMM may either be a tty device (for serial debugging),\n" |
3082 | "HOST:PORT to listen for a TCP connection, or '-' or 'stdio' to use \n" | |
3083 | "stdin/stdout of gdbserver.\n" | |
3084 | "PROG is the executable program. ARGS are arguments passed to inferior.\n" | |
3085 | "PID is the process ID to attach to, when --attach is specified.\n" | |
3086 | "\n" | |
3087 | "Operating modes:\n" | |
3088 | "\n" | |
3089 | " --attach Attach to running process PID.\n" | |
3090 | " --multi Start server without a specific program, and\n" | |
3091 | " only quit when explicitly commanded.\n" | |
3092 | " --once Exit after the first connection has closed.\n" | |
3093 | " --help Print this message and then exit.\n" | |
3094 | " --version Display version information and exit.\n" | |
3095 | "\n" | |
3096 | "Other options:\n" | |
3097 | "\n" | |
3098 | " --wrapper WRAPPER -- Run WRAPPER to start new programs.\n" | |
3099 | " --disable-randomization\n" | |
3100 | " Run PROG with address space randomization disabled.\n" | |
3101 | " --no-disable-randomization\n" | |
3102 | " Don't disable address space randomization when\n" | |
3103 | " starting PROG.\n" | |
3104 | "\n" | |
3105 | "Debug options:\n" | |
c16158bc | 3106 | "\n" |
62709adf | 3107 | " --debug Enable general debugging output.\n" |
87ce2a04 DE |
3108 | " --debug-format=opt1[,opt2,...]\n" |
3109 | " Specify extra content in debugging output.\n" | |
3110 | " Options:\n" | |
3111 | " all\n" | |
3112 | " none\n" | |
87ce2a04 | 3113 | " timestamp\n" |
62709adf | 3114 | " --remote-debug Enable remote protocol debugging output.\n" |
41f98f02 PA |
3115 | " --disable-packet=opt1[,opt2,...]\n" |
3116 | " Disable support for RSP packets or features.\n" | |
3117 | " Options:\n" | |
3118 | " vCont, Tthread, qC, qfThreadInfo and \n" | |
3119 | " threads (disable all threading packets).\n" | |
3120 | "\n" | |
3121 | "For more information, consult the GDB manual (available as on-line \n" | |
3122 | "info or a printed manual).\n"); | |
c16158bc JM |
3123 | if (REPORT_BUGS_TO[0] && stream == stdout) |
3124 | fprintf (stream, "Report bugs to \"%s\".\n", REPORT_BUGS_TO); | |
0bc68c49 DJ |
3125 | } |
3126 | ||
db42f210 PA |
3127 | static void |
3128 | gdbserver_show_disableable (FILE *stream) | |
3129 | { | |
3130 | fprintf (stream, "Disableable packets:\n" | |
3131 | " vCont \tAll vCont packets\n" | |
3132 | " qC \tQuerying the current thread\n" | |
3133 | " qfThreadInfo\tThread listing\n" | |
493e2a69 MS |
3134 | " Tthread \tPassing the thread specifier in the " |
3135 | "T stop reply packet\n" | |
db42f210 PA |
3136 | " threads \tAll of the above\n"); |
3137 | } | |
3138 | ||
3139 | ||
2d717e4f DJ |
3140 | #undef require_running |
3141 | #define require_running(BUF) \ | |
3142 | if (!target_running ()) \ | |
3143 | { \ | |
3144 | write_enn (BUF); \ | |
3145 | break; \ | |
3146 | } | |
3147 | ||
95954743 PA |
3148 | static int |
3149 | first_thread_of (struct inferior_list_entry *entry, void *args) | |
3150 | { | |
3151 | int pid = * (int *) args; | |
3152 | ||
3153 | if (ptid_get_pid (entry->id) == pid) | |
3154 | return 1; | |
3155 | ||
3156 | return 0; | |
3157 | } | |
3158 | ||
3159 | static void | |
3160 | kill_inferior_callback (struct inferior_list_entry *entry) | |
3161 | { | |
3162 | struct process_info *process = (struct process_info *) entry; | |
80894984 | 3163 | int pid = ptid_get_pid (process->entry.id); |
95954743 PA |
3164 | |
3165 | kill_inferior (pid); | |
3166 | discard_queued_stop_replies (pid); | |
3167 | } | |
3168 | ||
9f767825 DE |
3169 | /* Callback for for_each_inferior to detach or kill the inferior, |
3170 | depending on whether we attached to it or not. | |
3171 | We inform the user whether we're detaching or killing the process | |
3172 | as this is only called when gdbserver is about to exit. */ | |
3173 | ||
95954743 PA |
3174 | static void |
3175 | detach_or_kill_inferior_callback (struct inferior_list_entry *entry) | |
3176 | { | |
3177 | struct process_info *process = (struct process_info *) entry; | |
80894984 | 3178 | int pid = ptid_get_pid (process->entry.id); |
95954743 PA |
3179 | |
3180 | if (process->attached) | |
3181 | detach_inferior (pid); | |
3182 | else | |
3183 | kill_inferior (pid); | |
3184 | ||
3185 | discard_queued_stop_replies (pid); | |
3186 | } | |
3187 | ||
9f767825 DE |
3188 | /* for_each_inferior callback for detach_or_kill_for_exit to print |
3189 | the pids of started inferiors. */ | |
3190 | ||
3191 | static void | |
3192 | print_started_pid (struct inferior_list_entry *entry) | |
3193 | { | |
3194 | struct process_info *process = (struct process_info *) entry; | |
3195 | ||
3196 | if (! process->attached) | |
3197 | { | |
80894984 | 3198 | int pid = ptid_get_pid (process->entry.id); |
9f767825 DE |
3199 | fprintf (stderr, " %d", pid); |
3200 | } | |
3201 | } | |
3202 | ||
3203 | /* for_each_inferior callback for detach_or_kill_for_exit to print | |
3204 | the pids of attached inferiors. */ | |
3205 | ||
3206 | static void | |
3207 | print_attached_pid (struct inferior_list_entry *entry) | |
3208 | { | |
3209 | struct process_info *process = (struct process_info *) entry; | |
3210 | ||
3211 | if (process->attached) | |
3212 | { | |
80894984 | 3213 | int pid = ptid_get_pid (process->entry.id); |
9f767825 DE |
3214 | fprintf (stderr, " %d", pid); |
3215 | } | |
3216 | } | |
3217 | ||
3218 | /* Call this when exiting gdbserver with possible inferiors that need | |
3219 | to be killed or detached from. */ | |
3220 | ||
3221 | static void | |
3222 | detach_or_kill_for_exit (void) | |
3223 | { | |
3224 | /* First print a list of the inferiors we will be killing/detaching. | |
3225 | This is to assist the user, for example, in case the inferior unexpectedly | |
3226 | dies after we exit: did we screw up or did the inferior exit on its own? | |
3227 | Having this info will save some head-scratching. */ | |
3228 | ||
3229 | if (have_started_inferiors_p ()) | |
3230 | { | |
3231 | fprintf (stderr, "Killing process(es):"); | |
3232 | for_each_inferior (&all_processes, print_started_pid); | |
3233 | fprintf (stderr, "\n"); | |
3234 | } | |
3235 | if (have_attached_inferiors_p ()) | |
3236 | { | |
3237 | fprintf (stderr, "Detaching process(es):"); | |
3238 | for_each_inferior (&all_processes, print_attached_pid); | |
3239 | fprintf (stderr, "\n"); | |
3240 | } | |
3241 | ||
3242 | /* Now we can kill or detach the inferiors. */ | |
3243 | ||
3244 | for_each_inferior (&all_processes, detach_or_kill_inferior_callback); | |
3245 | } | |
3246 | ||
860789c7 GB |
3247 | /* Value that will be passed to exit(3) when gdbserver exits. */ |
3248 | static int exit_code; | |
3249 | ||
3250 | /* Cleanup version of detach_or_kill_for_exit. */ | |
3251 | ||
3252 | static void | |
3253 | detach_or_kill_for_exit_cleanup (void *ignore) | |
3254 | { | |
860789c7 | 3255 | |
492d29ea | 3256 | TRY |
860789c7 GB |
3257 | { |
3258 | detach_or_kill_for_exit (); | |
3259 | } | |
3260 | ||
492d29ea | 3261 | CATCH (exception, RETURN_MASK_ALL) |
860789c7 GB |
3262 | { |
3263 | fflush (stdout); | |
3264 | fprintf (stderr, "Detach or kill failed: %s\n", exception.message); | |
3265 | exit_code = 1; | |
3266 | } | |
492d29ea | 3267 | END_CATCH |
860789c7 GB |
3268 | } |
3269 | ||
3270 | /* Main function. This is called by the real "main" function, | |
3271 | wrapped in a TRY_CATCH that handles any uncaught exceptions. */ | |
3272 | ||
3273 | static void ATTRIBUTE_NORETURN | |
3274 | captured_main (int argc, char *argv[]) | |
c906108c | 3275 | { |
0729219d DJ |
3276 | int bad_attach; |
3277 | int pid; | |
2d717e4f DJ |
3278 | char *arg_end, *port; |
3279 | char **next_arg = &argv[1]; | |
89dc0afd JK |
3280 | volatile int multi_mode = 0; |
3281 | volatile int attach = 0; | |
2d717e4f | 3282 | int was_running; |
c906108c | 3283 | |
2d717e4f | 3284 | while (*next_arg != NULL && **next_arg == '-') |
dd24457d | 3285 | { |
2d717e4f DJ |
3286 | if (strcmp (*next_arg, "--version") == 0) |
3287 | { | |
3288 | gdbserver_version (); | |
3289 | exit (0); | |
3290 | } | |
3291 | else if (strcmp (*next_arg, "--help") == 0) | |
3292 | { | |
c16158bc | 3293 | gdbserver_usage (stdout); |
2d717e4f DJ |
3294 | exit (0); |
3295 | } | |
3296 | else if (strcmp (*next_arg, "--attach") == 0) | |
3297 | attach = 1; | |
3298 | else if (strcmp (*next_arg, "--multi") == 0) | |
3299 | multi_mode = 1; | |
ccd213ac DJ |
3300 | else if (strcmp (*next_arg, "--wrapper") == 0) |
3301 | { | |
3302 | next_arg++; | |
3303 | ||
3304 | wrapper_argv = next_arg; | |
3305 | while (*next_arg != NULL && strcmp (*next_arg, "--") != 0) | |
3306 | next_arg++; | |
3307 | ||
3308 | if (next_arg == wrapper_argv || *next_arg == NULL) | |
3309 | { | |
c16158bc | 3310 | gdbserver_usage (stderr); |
ccd213ac DJ |
3311 | exit (1); |
3312 | } | |
3313 | ||
3314 | /* Consume the "--". */ | |
3315 | *next_arg = NULL; | |
3316 | } | |
2d717e4f DJ |
3317 | else if (strcmp (*next_arg, "--debug") == 0) |
3318 | debug_threads = 1; | |
61012eef | 3319 | else if (startswith (*next_arg, "--debug-format=")) |
87ce2a04 DE |
3320 | { |
3321 | char *error_msg | |
3322 | = parse_debug_format_options ((*next_arg) | |
3323 | + sizeof ("--debug-format=") - 1, 0); | |
3324 | ||
3325 | if (error_msg != NULL) | |
3326 | { | |
3327 | fprintf (stderr, "%s", error_msg); | |
3328 | exit (1); | |
3329 | } | |
3330 | } | |
62709adf PA |
3331 | else if (strcmp (*next_arg, "--remote-debug") == 0) |
3332 | remote_debug = 1; | |
db42f210 PA |
3333 | else if (strcmp (*next_arg, "--disable-packet") == 0) |
3334 | { | |
3335 | gdbserver_show_disableable (stdout); | |
3336 | exit (0); | |
3337 | } | |
61012eef | 3338 | else if (startswith (*next_arg, "--disable-packet=")) |
db42f210 PA |
3339 | { |
3340 | char *packets, *tok; | |
3341 | ||
3342 | packets = *next_arg += sizeof ("--disable-packet=") - 1; | |
3343 | for (tok = strtok (packets, ","); | |
3344 | tok != NULL; | |
3345 | tok = strtok (NULL, ",")) | |
3346 | { | |
3347 | if (strcmp ("vCont", tok) == 0) | |
3348 | disable_packet_vCont = 1; | |
3349 | else if (strcmp ("Tthread", tok) == 0) | |
3350 | disable_packet_Tthread = 1; | |
3351 | else if (strcmp ("qC", tok) == 0) | |
3352 | disable_packet_qC = 1; | |
3353 | else if (strcmp ("qfThreadInfo", tok) == 0) | |
3354 | disable_packet_qfThreadInfo = 1; | |
3355 | else if (strcmp ("threads", tok) == 0) | |
3356 | { | |
3357 | disable_packet_vCont = 1; | |
3358 | disable_packet_Tthread = 1; | |
3359 | disable_packet_qC = 1; | |
3360 | disable_packet_qfThreadInfo = 1; | |
3361 | } | |
3362 | else | |
3363 | { | |
3364 | fprintf (stderr, "Don't know how to disable \"%s\".\n\n", | |
3365 | tok); | |
3366 | gdbserver_show_disableable (stderr); | |
3367 | exit (1); | |
3368 | } | |
3369 | } | |
3370 | } | |
e0f9f062 DE |
3371 | else if (strcmp (*next_arg, "-") == 0) |
3372 | { | |
3373 | /* "-" specifies a stdio connection and is a form of port | |
3374 | specification. */ | |
3375 | *next_arg = STDIO_CONNECTION_NAME; | |
3376 | break; | |
3377 | } | |
03583c20 UW |
3378 | else if (strcmp (*next_arg, "--disable-randomization") == 0) |
3379 | disable_randomization = 1; | |
3380 | else if (strcmp (*next_arg, "--no-disable-randomization") == 0) | |
3381 | disable_randomization = 0; | |
03f2bd59 JK |
3382 | else if (strcmp (*next_arg, "--once") == 0) |
3383 | run_once = 1; | |
2d717e4f DJ |
3384 | else |
3385 | { | |
3386 | fprintf (stderr, "Unknown argument: %s\n", *next_arg); | |
3387 | exit (1); | |
3388 | } | |
dd24457d | 3389 | |
2d717e4f DJ |
3390 | next_arg++; |
3391 | continue; | |
dd24457d DJ |
3392 | } |
3393 | ||
2d717e4f DJ |
3394 | port = *next_arg; |
3395 | next_arg++; | |
3396 | if (port == NULL || (!attach && !multi_mode && *next_arg == NULL)) | |
3397 | { | |
c16158bc | 3398 | gdbserver_usage (stderr); |
2d717e4f DJ |
3399 | exit (1); |
3400 | } | |
3401 | ||
602e3198 JK |
3402 | /* Remember stdio descriptors. LISTEN_DESC must not be listed, it will be |
3403 | opened by remote_prepare. */ | |
3404 | notice_open_fds (); | |
3405 | ||
e0f9f062 DE |
3406 | /* We need to know whether the remote connection is stdio before |
3407 | starting the inferior. Inferiors created in this scenario have | |
3408 | stdin,stdout redirected. So do this here before we call | |
3409 | start_inferior. */ | |
3410 | remote_prepare (port); | |
3411 | ||
0729219d DJ |
3412 | bad_attach = 0; |
3413 | pid = 0; | |
2d717e4f DJ |
3414 | |
3415 | /* --attach used to come after PORT, so allow it there for | |
3416 | compatibility. */ | |
3417 | if (*next_arg != NULL && strcmp (*next_arg, "--attach") == 0) | |
45b7b345 | 3418 | { |
2d717e4f DJ |
3419 | attach = 1; |
3420 | next_arg++; | |
45b7b345 DJ |
3421 | } |
3422 | ||
2d717e4f DJ |
3423 | if (attach |
3424 | && (*next_arg == NULL | |
3425 | || (*next_arg)[0] == '\0' | |
3426 | || (pid = strtoul (*next_arg, &arg_end, 0)) == 0 | |
3427 | || *arg_end != '\0' | |
3428 | || next_arg[1] != NULL)) | |
3429 | bad_attach = 1; | |
3430 | ||
3431 | if (bad_attach) | |
dd24457d | 3432 | { |
c16158bc | 3433 | gdbserver_usage (stderr); |
dd24457d DJ |
3434 | exit (1); |
3435 | } | |
c906108c | 3436 | |
a20d5e98 | 3437 | initialize_async_io (); |
4ce44c66 | 3438 | initialize_low (); |
60f662b0 | 3439 | initialize_event_loop (); |
219f2f23 PA |
3440 | if (target_supports_tracepoints ()) |
3441 | initialize_tracepoint (); | |
4ce44c66 | 3442 | |
bca929d3 DE |
3443 | own_buf = xmalloc (PBUFSIZ + 1); |
3444 | mem_buf = xmalloc (PBUFSIZ); | |
0a30fbc4 | 3445 | |
2d717e4f | 3446 | if (pid == 0 && *next_arg != NULL) |
45b7b345 | 3447 | { |
2d717e4f DJ |
3448 | int i, n; |
3449 | ||
3450 | n = argc - (next_arg - argv); | |
bca929d3 | 3451 | program_argv = xmalloc (sizeof (char *) * (n + 1)); |
2d717e4f | 3452 | for (i = 0; i < n; i++) |
bca929d3 | 3453 | program_argv[i] = xstrdup (next_arg[i]); |
2d717e4f DJ |
3454 | program_argv[i] = NULL; |
3455 | ||
45b7b345 | 3456 | /* Wait till we are at first instruction in program. */ |
5b1c542e | 3457 | start_inferior (program_argv); |
c906108c | 3458 | |
c588c53c MS |
3459 | /* We are now (hopefully) stopped at the first instruction of |
3460 | the target process. This assumes that the target process was | |
3461 | successfully created. */ | |
45b7b345 | 3462 | } |
2d717e4f DJ |
3463 | else if (pid != 0) |
3464 | { | |
5b1c542e | 3465 | if (attach_inferior (pid) == -1) |
2d717e4f DJ |
3466 | error ("Attaching not supported on this target"); |
3467 | ||
3468 | /* Otherwise succeeded. */ | |
3469 | } | |
45b7b345 DJ |
3470 | else |
3471 | { | |
5b1c542e PA |
3472 | last_status.kind = TARGET_WAITKIND_EXITED; |
3473 | last_status.value.integer = 0; | |
95954743 | 3474 | last_ptid = minus_one_ptid; |
45b7b345 | 3475 | } |
860789c7 | 3476 | make_cleanup (detach_or_kill_for_exit_cleanup, NULL); |
c906108c | 3477 | |
14a00470 YQ |
3478 | initialize_notif (); |
3479 | ||
311de423 PA |
3480 | /* Don't report shared library events on the initial connection, |
3481 | even if some libraries are preloaded. Avoids the "stopped by | |
3482 | shared library event" notice on gdb side. */ | |
3483 | dlls_changed = 0; | |
3484 | ||
5b1c542e PA |
3485 | if (last_status.kind == TARGET_WAITKIND_EXITED |
3486 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2d717e4f DJ |
3487 | was_running = 0; |
3488 | else | |
3489 | was_running = 1; | |
3490 | ||
3491 | if (!was_running && !multi_mode) | |
860789c7 | 3492 | error ("No program to debug"); |
c588c53c | 3493 | |
c906108c SS |
3494 | while (1) |
3495 | { | |
860789c7 | 3496 | |
a6f3e723 | 3497 | noack_mode = 0; |
95954743 | 3498 | multi_process = 0; |
89245bc0 DB |
3499 | report_fork_events = 0; |
3500 | report_vfork_events = 0; | |
8336d594 PA |
3501 | /* Be sure we're out of tfind mode. */ |
3502 | current_traceframe = -1; | |
40e91bc7 | 3503 | cont_thread = null_ptid; |
1ec68e26 PA |
3504 | swbreak_feature = 0; |
3505 | hwbreak_feature = 0; | |
bd99dc85 | 3506 | |
2d717e4f | 3507 | remote_open (port); |
c906108c | 3508 | |
492d29ea | 3509 | TRY |
2d717e4f | 3510 | { |
860789c7 GB |
3511 | /* Wait for events. This will return when all event sources |
3512 | are removed from the event loop. */ | |
3513 | start_event_loop (); | |
2d717e4f | 3514 | |
860789c7 GB |
3515 | /* If an exit was requested (using the "monitor exit" |
3516 | command), terminate now. The only other way to get | |
3517 | here is for getpkt to fail; close the connection | |
3518 | and reopen it at the top of the loop. */ | |
bd99dc85 | 3519 | |
860789c7 GB |
3520 | if (exit_requested || run_once) |
3521 | throw_quit ("Quit"); | |
bd99dc85 | 3522 | |
860789c7 GB |
3523 | fprintf (stderr, |
3524 | "Remote side has terminated connection. " | |
3525 | "GDBserver will reopen the connection.\n"); | |
8336d594 | 3526 | |
860789c7 GB |
3527 | /* Get rid of any pending statuses. An eventual reconnection |
3528 | (by the same GDB instance or another) will refresh all its | |
3529 | state from scratch. */ | |
3530 | discard_queued_stop_replies (-1); | |
3531 | for_each_inferior (&all_threads, | |
3532 | clear_pending_status_callback); | |
9939e131 | 3533 | |
860789c7 | 3534 | if (tracing) |
8336d594 | 3535 | { |
860789c7 | 3536 | if (disconnected_tracing) |
8336d594 | 3537 | { |
860789c7 GB |
3538 | /* Try to enable non-stop/async mode, so we we can |
3539 | both wait for an async socket accept, and handle | |
3540 | async target events simultaneously. There's also | |
3541 | no point either in having the target always stop | |
3542 | all threads, when we're going to pass signals | |
3543 | down without informing GDB. */ | |
3544 | if (!non_stop) | |
3545 | { | |
3546 | if (start_non_stop (1)) | |
3547 | non_stop = 1; | |
3548 | ||
3549 | /* Detaching implicitly resumes all threads; | |
3550 | simply disconnecting does not. */ | |
3551 | } | |
3552 | } | |
3553 | else | |
3554 | { | |
3555 | fprintf (stderr, | |
3556 | "Disconnected tracing disabled; " | |
3557 | "stopping trace run.\n"); | |
3558 | stop_tracing (); | |
8336d594 PA |
3559 | } |
3560 | } | |
860789c7 | 3561 | } |
492d29ea | 3562 | CATCH (exception, RETURN_MASK_ERROR) |
860789c7 GB |
3563 | { |
3564 | if (response_needed) | |
8336d594 | 3565 | { |
860789c7 GB |
3566 | write_enn (own_buf); |
3567 | putpkt (own_buf); | |
8336d594 PA |
3568 | } |
3569 | } | |
492d29ea | 3570 | END_CATCH |
bd99dc85 PA |
3571 | } |
3572 | } | |
01f9e8fa | 3573 | |
860789c7 GB |
3574 | /* Main function. */ |
3575 | ||
3576 | int | |
3577 | main (int argc, char *argv[]) | |
3578 | { | |
860789c7 | 3579 | |
492d29ea | 3580 | TRY |
860789c7 GB |
3581 | { |
3582 | captured_main (argc, argv); | |
3583 | } | |
492d29ea | 3584 | CATCH (exception, RETURN_MASK_ALL) |
860789c7 | 3585 | { |
492d29ea PA |
3586 | if (exception.reason == RETURN_ERROR) |
3587 | { | |
3588 | fflush (stdout); | |
3589 | fprintf (stderr, "%s\n", exception.message); | |
3590 | fprintf (stderr, "Exiting\n"); | |
3591 | exit_code = 1; | |
3592 | } | |
3593 | ||
3594 | exit (exit_code); | |
860789c7 | 3595 | } |
492d29ea | 3596 | END_CATCH |
860789c7 | 3597 | |
492d29ea | 3598 | gdb_assert_not_reached ("captured_main should never return"); |
860789c7 GB |
3599 | } |
3600 | ||
d708bcd1 PA |
3601 | /* Skip PACKET until the next semi-colon (or end of string). */ |
3602 | ||
3603 | static void | |
3604 | skip_to_semicolon (char **packet) | |
3605 | { | |
3606 | while (**packet != '\0' && **packet != ';') | |
3607 | (*packet)++; | |
3608 | } | |
3609 | ||
802e8e6d PA |
3610 | /* Process options coming from Z packets for a breakpoint. PACKET is |
3611 | the packet buffer. *PACKET is updated to point to the first char | |
3612 | after the last processed option. */ | |
9f3a5c85 LM |
3613 | |
3614 | static void | |
802e8e6d | 3615 | process_point_options (struct breakpoint *bp, char **packet) |
9f3a5c85 LM |
3616 | { |
3617 | char *dataptr = *packet; | |
d3ce09f5 | 3618 | int persist; |
9f3a5c85 LM |
3619 | |
3620 | /* Check if data has the correct format. */ | |
3621 | if (*dataptr != ';') | |
3622 | return; | |
3623 | ||
3624 | dataptr++; | |
3625 | ||
3626 | while (*dataptr) | |
3627 | { | |
d3ce09f5 SS |
3628 | if (*dataptr == ';') |
3629 | ++dataptr; | |
3630 | ||
3631 | if (*dataptr == 'X') | |
9f3a5c85 | 3632 | { |
d3ce09f5 | 3633 | /* Conditional expression. */ |
d171ca78 | 3634 | if (debug_threads) |
87ce2a04 | 3635 | debug_printf ("Found breakpoint condition.\n"); |
802e8e6d | 3636 | if (!add_breakpoint_condition (bp, &dataptr)) |
d708bcd1 | 3637 | skip_to_semicolon (&dataptr); |
d3ce09f5 | 3638 | } |
61012eef | 3639 | else if (startswith (dataptr, "cmds:")) |
d3ce09f5 SS |
3640 | { |
3641 | dataptr += strlen ("cmds:"); | |
3642 | if (debug_threads) | |
87ce2a04 | 3643 | debug_printf ("Found breakpoint commands %s.\n", dataptr); |
d3ce09f5 SS |
3644 | persist = (*dataptr == '1'); |
3645 | dataptr += 2; | |
802e8e6d | 3646 | if (add_breakpoint_commands (bp, &dataptr, persist)) |
d708bcd1 | 3647 | skip_to_semicolon (&dataptr); |
d3ce09f5 SS |
3648 | } |
3649 | else | |
3650 | { | |
d3ce09f5 SS |
3651 | fprintf (stderr, "Unknown token %c, ignoring.\n", |
3652 | *dataptr); | |
78a99e91 | 3653 | /* Skip tokens until we find one that we recognize. */ |
d708bcd1 | 3654 | skip_to_semicolon (&dataptr); |
9f3a5c85 | 3655 | } |
9f3a5c85 LM |
3656 | } |
3657 | *packet = dataptr; | |
3658 | } | |
3659 | ||
bd99dc85 PA |
3660 | /* Event loop callback that handles a serial event. The first byte in |
3661 | the serial buffer gets us here. We expect characters to arrive at | |
3662 | a brisk pace, so we read the rest of the packet with a blocking | |
3663 | getpkt call. */ | |
01f9e8fa | 3664 | |
8336d594 | 3665 | static int |
bd99dc85 PA |
3666 | process_serial_event (void) |
3667 | { | |
3668 | char ch; | |
3669 | int i = 0; | |
3670 | int signal; | |
3671 | unsigned int len; | |
764880b7 | 3672 | int res; |
bd99dc85 | 3673 | CORE_ADDR mem_addr; |
95954743 | 3674 | int pid; |
bd99dc85 PA |
3675 | unsigned char sig; |
3676 | int packet_len; | |
3677 | int new_packet_len = -1; | |
3678 | ||
3679 | /* Used to decide when gdbserver should exit in | |
3680 | multi-mode/remote. */ | |
3681 | static int have_ran = 0; | |
3682 | ||
3683 | if (!have_ran) | |
3684 | have_ran = target_running (); | |
3685 | ||
3686 | disable_async_io (); | |
3687 | ||
3688 | response_needed = 0; | |
3689 | packet_len = getpkt (own_buf); | |
3690 | if (packet_len <= 0) | |
3691 | { | |
bd99dc85 | 3692 | remote_close (); |
8336d594 PA |
3693 | /* Force an event loop break. */ |
3694 | return -1; | |
bd99dc85 PA |
3695 | } |
3696 | response_needed = 1; | |
3697 | ||
3698 | i = 0; | |
3699 | ch = own_buf[i++]; | |
3700 | switch (ch) | |
3701 | { | |
3702 | case 'q': | |
3703 | handle_query (own_buf, packet_len, &new_packet_len); | |
3704 | break; | |
3705 | case 'Q': | |
3706 | handle_general_set (own_buf); | |
3707 | break; | |
3708 | case 'D': | |
3709 | require_running (own_buf); | |
95954743 PA |
3710 | |
3711 | if (multi_process) | |
3712 | { | |
3713 | i++; /* skip ';' */ | |
3714 | pid = strtol (&own_buf[i], NULL, 16); | |
3715 | } | |
3716 | else | |
fbd5db48 | 3717 | pid = ptid_get_pid (current_ptid); |
95954743 | 3718 | |
d3ce09f5 | 3719 | if ((tracing && disconnected_tracing) || any_persistent_commands ()) |
8336d594 PA |
3720 | { |
3721 | struct thread_resume resume_info; | |
3722 | struct process_info *process = find_process_pid (pid); | |
3723 | ||
3724 | if (process == NULL) | |
3725 | { | |
3726 | write_enn (own_buf); | |
3727 | break; | |
3728 | } | |
3729 | ||
d3ce09f5 SS |
3730 | if (tracing && disconnected_tracing) |
3731 | fprintf (stderr, | |
3732 | "Disconnected tracing in effect, " | |
3733 | "leaving gdbserver attached to the process\n"); | |
3734 | ||
3735 | if (any_persistent_commands ()) | |
3736 | fprintf (stderr, | |
3737 | "Persistent commands are present, " | |
3738 | "leaving gdbserver attached to the process\n"); | |
8336d594 PA |
3739 | |
3740 | /* Make sure we're in non-stop/async mode, so we we can both | |
3741 | wait for an async socket accept, and handle async target | |
3742 | events simultaneously. There's also no point either in | |
3743 | having the target stop all threads, when we're going to | |
3744 | pass signals down without informing GDB. */ | |
3745 | if (!non_stop) | |
3746 | { | |
3747 | if (debug_threads) | |
87ce2a04 | 3748 | debug_printf ("Forcing non-stop mode\n"); |
8336d594 PA |
3749 | |
3750 | non_stop = 1; | |
3751 | start_non_stop (1); | |
3752 | } | |
3753 | ||
3754 | process->gdb_detached = 1; | |
3755 | ||
3756 | /* Detaching implicitly resumes all threads. */ | |
3757 | resume_info.thread = minus_one_ptid; | |
3758 | resume_info.kind = resume_continue; | |
3759 | resume_info.sig = 0; | |
3760 | (*the_target->resume) (&resume_info, 1); | |
3761 | ||
3762 | write_ok (own_buf); | |
3763 | break; /* from switch/case */ | |
3764 | } | |
3765 | ||
95954743 | 3766 | fprintf (stderr, "Detaching from process %d\n", pid); |
8336d594 | 3767 | stop_tracing (); |
95954743 | 3768 | if (detach_inferior (pid) != 0) |
bd99dc85 PA |
3769 | write_enn (own_buf); |
3770 | else | |
3771 | { | |
95954743 | 3772 | discard_queued_stop_replies (pid); |
bd99dc85 PA |
3773 | write_ok (own_buf); |
3774 | ||
3775 | if (extended_protocol) | |
c906108c | 3776 | { |
bd99dc85 PA |
3777 | /* Treat this like a normal program exit. */ |
3778 | last_status.kind = TARGET_WAITKIND_EXITED; | |
3779 | last_status.value.integer = 0; | |
95954743 | 3780 | last_ptid = pid_to_ptid (pid); |
2d717e4f | 3781 | |
0bfdf32f | 3782 | current_thread = NULL; |
bd99dc85 PA |
3783 | } |
3784 | else | |
3785 | { | |
3786 | putpkt (own_buf); | |
3787 | remote_close (); | |
3788 | ||
3789 | /* If we are attached, then we can exit. Otherwise, we | |
3790 | need to hang around doing nothing, until the child is | |
3791 | gone. */ | |
71f55dd8 | 3792 | join_inferior (pid); |
bd99dc85 PA |
3793 | exit (0); |
3794 | } | |
3795 | } | |
3796 | break; | |
3797 | case '!': | |
3798 | extended_protocol = 1; | |
3799 | write_ok (own_buf); | |
3800 | break; | |
3801 | case '?': | |
3802 | handle_status (own_buf); | |
3803 | break; | |
3804 | case 'H': | |
3805 | if (own_buf[1] == 'c' || own_buf[1] == 'g' || own_buf[1] == 's') | |
3806 | { | |
95954743 PA |
3807 | ptid_t gdb_id, thread_id; |
3808 | int pid; | |
bd99dc85 PA |
3809 | |
3810 | require_running (own_buf); | |
95954743 PA |
3811 | |
3812 | gdb_id = read_ptid (&own_buf[2], NULL); | |
3813 | ||
3814 | pid = ptid_get_pid (gdb_id); | |
3815 | ||
3816 | if (ptid_equal (gdb_id, null_ptid) | |
3817 | || ptid_equal (gdb_id, minus_one_ptid)) | |
3818 | thread_id = null_ptid; | |
3819 | else if (pid != 0 | |
3820 | && ptid_equal (pid_to_ptid (pid), | |
3821 | gdb_id)) | |
3822 | { | |
3823 | struct thread_info *thread = | |
3824 | (struct thread_info *) find_inferior (&all_threads, | |
3825 | first_thread_of, | |
3826 | &pid); | |
3827 | if (!thread) | |
3828 | { | |
3829 | write_enn (own_buf); | |
3830 | break; | |
3831 | } | |
3832 | ||
80894984 | 3833 | thread_id = thread->entry.id; |
95954743 | 3834 | } |
bd99dc85 PA |
3835 | else |
3836 | { | |
3837 | thread_id = gdb_id_to_thread_id (gdb_id); | |
95954743 | 3838 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 3839 | { |
a06660f7 | 3840 | write_enn (own_buf); |
c906108c SS |
3841 | break; |
3842 | } | |
c906108c SS |
3843 | } |
3844 | ||
bd99dc85 | 3845 | if (own_buf[1] == 'g') |
c906108c | 3846 | { |
95954743 | 3847 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 3848 | { |
bd99dc85 PA |
3849 | /* GDB is telling us to choose any thread. Check if |
3850 | the currently selected thread is still valid. If | |
3851 | it is not, select the first available. */ | |
3852 | struct thread_info *thread = | |
3853 | (struct thread_info *) find_inferior_id (&all_threads, | |
3854 | general_thread); | |
3855 | if (thread == NULL) | |
649ebbca DE |
3856 | { |
3857 | thread = get_first_thread (); | |
3858 | thread_id = thread->entry.id; | |
3859 | } | |
c906108c | 3860 | } |
bd99dc85 PA |
3861 | |
3862 | general_thread = thread_id; | |
0bfdf32f | 3863 | set_desired_thread (1); |
c906108c | 3864 | } |
bd99dc85 PA |
3865 | else if (own_buf[1] == 'c') |
3866 | cont_thread = thread_id; | |
c906108c | 3867 | |
bd99dc85 PA |
3868 | write_ok (own_buf); |
3869 | } | |
3870 | else | |
3871 | { | |
3872 | /* Silently ignore it so that gdb can extend the protocol | |
3873 | without compatibility headaches. */ | |
3874 | own_buf[0] = '\0'; | |
2d717e4f | 3875 | } |
bd99dc85 PA |
3876 | break; |
3877 | case 'g': | |
219f2f23 PA |
3878 | require_running (own_buf); |
3879 | if (current_traceframe >= 0) | |
3880 | { | |
3aee8918 PA |
3881 | struct regcache *regcache |
3882 | = new_register_cache (current_target_desc ()); | |
219f2f23 PA |
3883 | |
3884 | if (fetch_traceframe_registers (current_traceframe, | |
3885 | regcache, -1) == 0) | |
3886 | registers_to_string (regcache, own_buf); | |
3887 | else | |
3888 | write_enn (own_buf); | |
3889 | free_register_cache (regcache); | |
3890 | } | |
3891 | else | |
3892 | { | |
3893 | struct regcache *regcache; | |
3894 | ||
0bfdf32f GB |
3895 | set_desired_thread (1); |
3896 | regcache = get_thread_regcache (current_thread, 1); | |
219f2f23 PA |
3897 | registers_to_string (regcache, own_buf); |
3898 | } | |
bd99dc85 PA |
3899 | break; |
3900 | case 'G': | |
219f2f23 PA |
3901 | require_running (own_buf); |
3902 | if (current_traceframe >= 0) | |
3903 | write_enn (own_buf); | |
3904 | else | |
3905 | { | |
442ea881 PA |
3906 | struct regcache *regcache; |
3907 | ||
0bfdf32f GB |
3908 | set_desired_thread (1); |
3909 | regcache = get_thread_regcache (current_thread, 1); | |
442ea881 PA |
3910 | registers_from_string (regcache, &own_buf[1]); |
3911 | write_ok (own_buf); | |
3912 | } | |
bd99dc85 PA |
3913 | break; |
3914 | case 'm': | |
3915 | require_running (own_buf); | |
3916 | decode_m_packet (&own_buf[1], &mem_addr, &len); | |
764880b7 PA |
3917 | res = gdb_read_memory (mem_addr, mem_buf, len); |
3918 | if (res < 0) | |
bd99dc85 | 3919 | write_enn (own_buf); |
764880b7 | 3920 | else |
e9371aff | 3921 | bin2hex (mem_buf, own_buf, res); |
bd99dc85 PA |
3922 | break; |
3923 | case 'M': | |
3924 | require_running (own_buf); | |
fa593d66 | 3925 | decode_M_packet (&own_buf[1], &mem_addr, &len, &mem_buf); |
90d74c30 | 3926 | if (gdb_write_memory (mem_addr, mem_buf, len) == 0) |
bd99dc85 PA |
3927 | write_ok (own_buf); |
3928 | else | |
3929 | write_enn (own_buf); | |
3930 | break; | |
3931 | case 'X': | |
3932 | require_running (own_buf); | |
3933 | if (decode_X_packet (&own_buf[1], packet_len - 1, | |
fa593d66 | 3934 | &mem_addr, &len, &mem_buf) < 0 |
90d74c30 | 3935 | || gdb_write_memory (mem_addr, mem_buf, len) != 0) |
bd99dc85 PA |
3936 | write_enn (own_buf); |
3937 | else | |
3938 | write_ok (own_buf); | |
3939 | break; | |
3940 | case 'C': | |
3941 | require_running (own_buf); | |
a7191e8b | 3942 | hex2bin (own_buf + 1, &sig, 1); |
2ea28649 PA |
3943 | if (gdb_signal_to_host_p (sig)) |
3944 | signal = gdb_signal_to_host (sig); | |
bd99dc85 PA |
3945 | else |
3946 | signal = 0; | |
3947 | myresume (own_buf, 0, signal); | |
3948 | break; | |
3949 | case 'S': | |
3950 | require_running (own_buf); | |
a7191e8b | 3951 | hex2bin (own_buf + 1, &sig, 1); |
2ea28649 PA |
3952 | if (gdb_signal_to_host_p (sig)) |
3953 | signal = gdb_signal_to_host (sig); | |
bd99dc85 PA |
3954 | else |
3955 | signal = 0; | |
3956 | myresume (own_buf, 1, signal); | |
3957 | break; | |
3958 | case 'c': | |
3959 | require_running (own_buf); | |
3960 | signal = 0; | |
3961 | myresume (own_buf, 0, signal); | |
3962 | break; | |
3963 | case 's': | |
3964 | require_running (own_buf); | |
3965 | signal = 0; | |
3966 | myresume (own_buf, 1, signal); | |
3967 | break; | |
c6314022 AR |
3968 | case 'Z': /* insert_ ... */ |
3969 | /* Fallthrough. */ | |
3970 | case 'z': /* remove_ ... */ | |
bd99dc85 | 3971 | { |
bd99dc85 | 3972 | char *dataptr; |
aca22551 PA |
3973 | ULONGEST addr; |
3974 | int len; | |
bd99dc85 | 3975 | char type = own_buf[1]; |
c6314022 | 3976 | int res; |
d993e290 | 3977 | const int insert = ch == 'Z'; |
aca22551 PA |
3978 | char *p = &own_buf[3]; |
3979 | ||
3980 | p = unpack_varlen_hex (p, &addr); | |
3981 | len = strtol (p + 1, &dataptr, 16); | |
c6314022 | 3982 | |
802e8e6d | 3983 | if (insert) |
d993e290 | 3984 | { |
802e8e6d PA |
3985 | struct breakpoint *bp; |
3986 | ||
3987 | bp = set_gdb_breakpoint (type, addr, len, &res); | |
3988 | if (bp != NULL) | |
9f3a5c85 | 3989 | { |
802e8e6d PA |
3990 | res = 0; |
3991 | ||
3992 | /* GDB may have sent us a list of *point parameters to | |
3993 | be evaluated on the target's side. Read such list | |
3994 | here. If we already have a list of parameters, GDB | |
3995 | is telling us to drop that list and use this one | |
3996 | instead. */ | |
0a261ed8 | 3997 | clear_breakpoint_conditions_and_commands (bp); |
802e8e6d | 3998 | process_point_options (bp, &dataptr); |
9f3a5c85 | 3999 | } |
d993e290 | 4000 | } |
802e8e6d PA |
4001 | else |
4002 | res = delete_gdb_breakpoint (type, addr, len); | |
bd99dc85 | 4003 | |
c6314022 AR |
4004 | if (res == 0) |
4005 | write_ok (own_buf); | |
4006 | else if (res == 1) | |
4007 | /* Unsupported. */ | |
4008 | own_buf[0] = '\0'; | |
bd99dc85 | 4009 | else |
c6314022 | 4010 | write_enn (own_buf); |
bd99dc85 PA |
4011 | break; |
4012 | } | |
4013 | case 'k': | |
4014 | response_needed = 0; | |
4015 | if (!target_running ()) | |
95954743 PA |
4016 | /* The packet we received doesn't make sense - but we can't |
4017 | reply to it, either. */ | |
8336d594 | 4018 | return 0; |
c906108c | 4019 | |
95954743 PA |
4020 | fprintf (stderr, "Killing all inferiors\n"); |
4021 | for_each_inferior (&all_processes, kill_inferior_callback); | |
c906108c | 4022 | |
bd99dc85 PA |
4023 | /* When using the extended protocol, we wait with no program |
4024 | running. The traditional protocol will exit instead. */ | |
4025 | if (extended_protocol) | |
4026 | { | |
4027 | last_status.kind = TARGET_WAITKIND_EXITED; | |
a493e3e2 | 4028 | last_status.value.sig = GDB_SIGNAL_KILL; |
8336d594 | 4029 | return 0; |
bd99dc85 PA |
4030 | } |
4031 | else | |
8336d594 PA |
4032 | exit (0); |
4033 | ||
bd99dc85 PA |
4034 | case 'T': |
4035 | { | |
95954743 | 4036 | ptid_t gdb_id, thread_id; |
bd99dc85 PA |
4037 | |
4038 | require_running (own_buf); | |
95954743 PA |
4039 | |
4040 | gdb_id = read_ptid (&own_buf[1], NULL); | |
bd99dc85 | 4041 | thread_id = gdb_id_to_thread_id (gdb_id); |
95954743 | 4042 | if (ptid_equal (thread_id, null_ptid)) |
bd99dc85 PA |
4043 | { |
4044 | write_enn (own_buf); | |
4045 | break; | |
4046 | } | |
4047 | ||
4048 | if (mythread_alive (thread_id)) | |
4049 | write_ok (own_buf); | |
4050 | else | |
4051 | write_enn (own_buf); | |
4052 | } | |
4053 | break; | |
4054 | case 'R': | |
4055 | response_needed = 0; | |
4056 | ||
4057 | /* Restarting the inferior is only supported in the extended | |
4058 | protocol. */ | |
4059 | if (extended_protocol) | |
4060 | { | |
4061 | if (target_running ()) | |
95954743 PA |
4062 | for_each_inferior (&all_processes, |
4063 | kill_inferior_callback); | |
bd99dc85 PA |
4064 | fprintf (stderr, "GDBserver restarting\n"); |
4065 | ||
4066 | /* Wait till we are at 1st instruction in prog. */ | |
4067 | if (program_argv != NULL) | |
4068 | start_inferior (program_argv); | |
4069 | else | |
4070 | { | |
4071 | last_status.kind = TARGET_WAITKIND_EXITED; | |
a493e3e2 | 4072 | last_status.value.sig = GDB_SIGNAL_KILL; |
bd99dc85 | 4073 | } |
8336d594 | 4074 | return 0; |
c906108c SS |
4075 | } |
4076 | else | |
4077 | { | |
bd99dc85 PA |
4078 | /* It is a request we don't understand. Respond with an |
4079 | empty packet so that gdb knows that we don't support this | |
4080 | request. */ | |
4081 | own_buf[0] = '\0'; | |
4082 | break; | |
4083 | } | |
4084 | case 'v': | |
4085 | /* Extended (long) request. */ | |
4086 | handle_v_requests (own_buf, packet_len, &new_packet_len); | |
4087 | break; | |
4088 | ||
4089 | default: | |
4090 | /* It is a request we don't understand. Respond with an empty | |
4091 | packet so that gdb knows that we don't support this | |
4092 | request. */ | |
4093 | own_buf[0] = '\0'; | |
4094 | break; | |
4095 | } | |
4096 | ||
4097 | if (new_packet_len != -1) | |
4098 | putpkt_binary (own_buf, new_packet_len); | |
4099 | else | |
4100 | putpkt (own_buf); | |
4101 | ||
4102 | response_needed = 0; | |
4103 | ||
4104 | if (!extended_protocol && have_ran && !target_running ()) | |
4105 | { | |
4106 | /* In non-stop, defer exiting until GDB had a chance to query | |
4107 | the whole vStopped list (until it gets an OK). */ | |
14a00470 | 4108 | if (QUEUE_is_empty (notif_event_p, notif_stop.queue)) |
bd99dc85 | 4109 | { |
1a3d890b PA |
4110 | /* Be transparent when GDB is connected through stdio -- no |
4111 | need to spam GDB's console. */ | |
4112 | if (!remote_connection_is_stdio ()) | |
4113 | fprintf (stderr, "GDBserver exiting\n"); | |
c906108c | 4114 | remote_close (); |
bd99dc85 | 4115 | exit (0); |
c906108c SS |
4116 | } |
4117 | } | |
8336d594 PA |
4118 | |
4119 | if (exit_requested) | |
4120 | return -1; | |
4121 | ||
4122 | return 0; | |
c906108c | 4123 | } |
bd99dc85 PA |
4124 | |
4125 | /* Event-loop callback for serial events. */ | |
4126 | ||
8336d594 | 4127 | int |
bd99dc85 PA |
4128 | handle_serial_event (int err, gdb_client_data client_data) |
4129 | { | |
4130 | if (debug_threads) | |
87ce2a04 | 4131 | debug_printf ("handling possible serial event\n"); |
bd99dc85 PA |
4132 | |
4133 | /* Really handle it. */ | |
8336d594 PA |
4134 | if (process_serial_event () < 0) |
4135 | return -1; | |
bd99dc85 | 4136 | |
0bfdf32f | 4137 | /* Be sure to not change the selected thread behind GDB's back. |
bd99dc85 | 4138 | Important in the non-stop mode asynchronous protocol. */ |
0bfdf32f | 4139 | set_desired_thread (1); |
8336d594 PA |
4140 | |
4141 | return 0; | |
bd99dc85 PA |
4142 | } |
4143 | ||
4144 | /* Event-loop callback for target events. */ | |
4145 | ||
8336d594 | 4146 | int |
bd99dc85 PA |
4147 | handle_target_event (int err, gdb_client_data client_data) |
4148 | { | |
4149 | if (debug_threads) | |
87ce2a04 | 4150 | debug_printf ("handling possible target event\n"); |
bd99dc85 | 4151 | |
95954743 PA |
4152 | last_ptid = mywait (minus_one_ptid, &last_status, |
4153 | TARGET_WNOHANG, 1); | |
bd99dc85 | 4154 | |
fa96cb38 PA |
4155 | if (last_status.kind == TARGET_WAITKIND_NO_RESUMED) |
4156 | { | |
4157 | /* No RSP support for this yet. */ | |
4158 | } | |
4159 | else if (last_status.kind != TARGET_WAITKIND_IGNORE) | |
bd99dc85 | 4160 | { |
8336d594 PA |
4161 | int pid = ptid_get_pid (last_ptid); |
4162 | struct process_info *process = find_process_pid (pid); | |
4163 | int forward_event = !gdb_connected () || process->gdb_detached; | |
4164 | ||
4165 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
4166 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
f9e39928 PA |
4167 | { |
4168 | mark_breakpoints_out (process); | |
4169 | mourn_inferior (process); | |
4170 | } | |
ce1a5b52 | 4171 | else |
d20a8ad9 PA |
4172 | { |
4173 | /* We're reporting this thread as stopped. Update its | |
4174 | "want-stopped" state to what the client wants, until it | |
4175 | gets a new resume action. */ | |
0bfdf32f GB |
4176 | current_thread->last_resume_kind = resume_stop; |
4177 | current_thread->last_status = last_status; | |
d20a8ad9 | 4178 | } |
8336d594 PA |
4179 | |
4180 | if (forward_event) | |
4181 | { | |
4182 | if (!target_running ()) | |
4183 | { | |
4184 | /* The last process exited. We're done. */ | |
4185 | exit (0); | |
4186 | } | |
4187 | ||
4188 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
4189 | { | |
4190 | /* A thread stopped with a signal, but gdb isn't | |
4191 | connected to handle it. Pass it down to the | |
4192 | inferior, as if it wasn't being traced. */ | |
4193 | struct thread_resume resume_info; | |
4194 | ||
4195 | if (debug_threads) | |
87ce2a04 DE |
4196 | debug_printf ("GDB not connected; forwarding event %d for" |
4197 | " [%s]\n", | |
4198 | (int) last_status.kind, | |
4199 | target_pid_to_str (last_ptid)); | |
8336d594 PA |
4200 | |
4201 | resume_info.thread = last_ptid; | |
4202 | resume_info.kind = resume_continue; | |
2ea28649 | 4203 | resume_info.sig = gdb_signal_to_host (last_status.value.sig); |
8336d594 PA |
4204 | (*the_target->resume) (&resume_info, 1); |
4205 | } | |
4206 | else if (debug_threads) | |
87ce2a04 DE |
4207 | debug_printf ("GDB not connected; ignoring event %d for [%s]\n", |
4208 | (int) last_status.kind, | |
4209 | target_pid_to_str (last_ptid)); | |
8336d594 PA |
4210 | } |
4211 | else | |
4212 | { | |
14a00470 YQ |
4213 | struct vstop_notif *vstop_notif |
4214 | = xmalloc (sizeof (struct vstop_notif)); | |
4215 | ||
4216 | vstop_notif->status = last_status; | |
4217 | vstop_notif->ptid = last_ptid; | |
4218 | /* Push Stop notification. */ | |
4219 | notif_push (¬if_stop, | |
4220 | (struct notif_event *) vstop_notif); | |
8336d594 | 4221 | } |
bd99dc85 PA |
4222 | } |
4223 | ||
0bfdf32f | 4224 | /* Be sure to not change the selected thread behind GDB's back. |
bd99dc85 | 4225 | Important in the non-stop mode asynchronous protocol. */ |
0bfdf32f | 4226 | set_desired_thread (1); |
8336d594 PA |
4227 | |
4228 | return 0; | |
bd99dc85 | 4229 | } |