Commit | Line | Data |
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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 | ||
6085d6f6 | 52 | 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; | |
94585166 | 62 | int report_exec_events; |
65706a29 | 63 | int report_thread_events; |
bd99dc85 | 64 | int non_stop; |
1ec68e26 PA |
65 | int swbreak_feature; |
66 | int hwbreak_feature; | |
bd99dc85 | 67 | |
750ce8d1 YQ |
68 | /* True if the "vContSupported" feature is active. In that case, GDB |
69 | wants us to report whether single step is supported in the reply to | |
70 | "vCont?" packet. */ | |
71 | static int vCont_supported; | |
72 | ||
03583c20 UW |
73 | /* Whether we should attempt to disable the operating system's address |
74 | space randomization feature before starting an inferior. */ | |
75 | int disable_randomization = 1; | |
76 | ||
ccd213ac | 77 | static char **program_argv, **wrapper_argv; |
2d717e4f | 78 | |
a493e3e2 PA |
79 | int pass_signals[GDB_SIGNAL_LAST]; |
80 | int program_signals[GDB_SIGNAL_LAST]; | |
9b224c5e | 81 | int program_signals_p; |
89be2091 | 82 | |
a9fa9f7d DJ |
83 | /* The PID of the originally created or attached inferior. Used to |
84 | send signals to the process when GDB sends us an asynchronous interrupt | |
85 | (user hitting Control-C in the client), and to wait for the child to exit | |
86 | when no longer debugging it. */ | |
87 | ||
a1928bad | 88 | unsigned long signal_pid; |
a9fa9f7d | 89 | |
290fadea RS |
90 | #ifdef SIGTTOU |
91 | /* A file descriptor for the controlling terminal. */ | |
92 | int terminal_fd; | |
93 | ||
94 | /* TERMINAL_FD's original foreground group. */ | |
95 | pid_t old_foreground_pgrp; | |
96 | ||
97 | /* Hand back terminal ownership to the original foreground group. */ | |
98 | ||
99 | static void | |
100 | restore_old_foreground_pgrp (void) | |
101 | { | |
102 | tcsetpgrp (terminal_fd, old_foreground_pgrp); | |
103 | } | |
104 | #endif | |
105 | ||
ec56be1b PA |
106 | /* Set if you want to disable optional thread related packets support |
107 | in gdbserver, for the sake of testing GDB against stubs that don't | |
108 | support them. */ | |
109 | int disable_packet_vCont; | |
110 | int disable_packet_Tthread; | |
111 | int disable_packet_qC; | |
112 | int disable_packet_qfThreadInfo; | |
113 | ||
5b1c542e PA |
114 | /* Last status reported to GDB. */ |
115 | static struct target_waitstatus last_status; | |
95954743 | 116 | static ptid_t last_ptid; |
5b1c542e | 117 | |
bd99dc85 PA |
118 | static char *own_buf; |
119 | static unsigned char *mem_buf; | |
120 | ||
14a00470 YQ |
121 | /* A sub-class of 'struct notif_event' for stop, holding information |
122 | relative to a single stop reply. We keep a queue of these to | |
123 | push to GDB in non-stop mode. */ | |
124 | ||
bd99dc85 PA |
125 | struct vstop_notif |
126 | { | |
14a00470 | 127 | struct notif_event base; |
bd99dc85 PA |
128 | |
129 | /* Thread or process that got the event. */ | |
95954743 | 130 | ptid_t ptid; |
bd99dc85 PA |
131 | |
132 | /* Event info. */ | |
133 | struct target_waitstatus status; | |
134 | }; | |
135 | ||
f4abbc16 MM |
136 | /* The current btrace configuration. This is gdbserver's mirror of GDB's |
137 | btrace configuration. */ | |
138 | static struct btrace_config current_btrace_conf; | |
139 | ||
14a00470 | 140 | DEFINE_QUEUE_P (notif_event_p); |
bd99dc85 PA |
141 | |
142 | /* Put a stop reply to the stop reply queue. */ | |
143 | ||
144 | static void | |
95954743 | 145 | queue_stop_reply (ptid_t ptid, struct target_waitstatus *status) |
bd99dc85 | 146 | { |
8d749320 | 147 | struct vstop_notif *new_notif = XNEW (struct vstop_notif); |
bd99dc85 | 148 | |
bd99dc85 PA |
149 | new_notif->ptid = ptid; |
150 | new_notif->status = *status; | |
151 | ||
14a00470 | 152 | notif_event_enque (¬if_stop, (struct notif_event *) new_notif); |
bd99dc85 PA |
153 | } |
154 | ||
14a00470 | 155 | static int |
465a859e PA |
156 | remove_all_on_match_ptid (QUEUE (notif_event_p) *q, |
157 | QUEUE_ITER (notif_event_p) *iter, | |
158 | struct notif_event *event, | |
159 | void *data) | |
bd99dc85 | 160 | { |
465a859e PA |
161 | ptid_t filter_ptid = *(ptid_t *) data; |
162 | struct vstop_notif *vstop_event = (struct vstop_notif *) event; | |
d20a8ad9 | 163 | |
465a859e | 164 | if (ptid_match (vstop_event->ptid, filter_ptid)) |
bd99dc85 | 165 | { |
14a00470 YQ |
166 | if (q->free_func != NULL) |
167 | q->free_func (event); | |
168 | ||
169 | QUEUE_remove_elem (notif_event_p, q, iter); | |
bd99dc85 | 170 | } |
14a00470 YQ |
171 | |
172 | return 1; | |
bd99dc85 PA |
173 | } |
174 | ||
465a859e | 175 | /* See server.h. */ |
bd99dc85 | 176 | |
465a859e PA |
177 | void |
178 | discard_queued_stop_replies (ptid_t ptid) | |
bd99dc85 | 179 | { |
14a00470 | 180 | QUEUE_iterate (notif_event_p, notif_stop.queue, |
465a859e | 181 | remove_all_on_match_ptid, &ptid); |
bd99dc85 PA |
182 | } |
183 | ||
bd99dc85 | 184 | static void |
14a00470 | 185 | vstop_notif_reply (struct notif_event *event, char *own_buf) |
bd99dc85 | 186 | { |
14a00470 YQ |
187 | struct vstop_notif *vstop = (struct vstop_notif *) event; |
188 | ||
189 | prepare_resume_reply (own_buf, vstop->ptid, &vstop->status); | |
bd99dc85 PA |
190 | } |
191 | ||
14a00470 YQ |
192 | struct notif_server notif_stop = |
193 | { | |
194 | "vStopped", "Stop", NULL, vstop_notif_reply, | |
195 | }; | |
196 | ||
2d717e4f DJ |
197 | static int |
198 | target_running (void) | |
199 | { | |
649ebbca | 200 | return get_first_thread () != NULL; |
2d717e4f DJ |
201 | } |
202 | ||
fc620387 | 203 | static int |
5b1c542e | 204 | start_inferior (char **argv) |
c906108c | 205 | { |
ccd213ac | 206 | char **new_argv = argv; |
2d717e4f | 207 | |
ccd213ac DJ |
208 | if (wrapper_argv != NULL) |
209 | { | |
210 | int i, count = 1; | |
211 | ||
212 | for (i = 0; wrapper_argv[i] != NULL; i++) | |
213 | count++; | |
214 | for (i = 0; argv[i] != NULL; i++) | |
215 | count++; | |
8d749320 | 216 | new_argv = XALLOCAVEC (char *, count); |
ccd213ac DJ |
217 | count = 0; |
218 | for (i = 0; wrapper_argv[i] != NULL; i++) | |
219 | new_argv[count++] = wrapper_argv[i]; | |
220 | for (i = 0; argv[i] != NULL; i++) | |
221 | new_argv[count++] = argv[i]; | |
222 | new_argv[count] = NULL; | |
223 | } | |
224 | ||
65730243 DE |
225 | if (debug_threads) |
226 | { | |
227 | int i; | |
228 | for (i = 0; new_argv[i]; ++i) | |
87ce2a04 DE |
229 | debug_printf ("new_argv[%d] = \"%s\"\n", i, new_argv[i]); |
230 | debug_flush (); | |
65730243 DE |
231 | } |
232 | ||
b80864fb | 233 | #ifdef SIGTTOU |
a9fa9f7d DJ |
234 | signal (SIGTTOU, SIG_DFL); |
235 | signal (SIGTTIN, SIG_DFL); | |
b80864fb | 236 | #endif |
a9fa9f7d | 237 | |
ccd213ac | 238 | signal_pid = create_inferior (new_argv[0], new_argv); |
0d62e5e8 | 239 | |
c588c53c MS |
240 | /* FIXME: we don't actually know at this point that the create |
241 | actually succeeded. We won't know that until we wait. */ | |
a1928bad | 242 | fprintf (stderr, "Process %s created; pid = %ld\n", argv[0], |
a9fa9f7d | 243 | signal_pid); |
b80864fb | 244 | fflush (stderr); |
a9fa9f7d | 245 | |
b80864fb | 246 | #ifdef SIGTTOU |
a9fa9f7d DJ |
247 | signal (SIGTTOU, SIG_IGN); |
248 | signal (SIGTTIN, SIG_IGN); | |
290fadea RS |
249 | terminal_fd = fileno (stderr); |
250 | old_foreground_pgrp = tcgetpgrp (terminal_fd); | |
251 | tcsetpgrp (terminal_fd, signal_pid); | |
252 | atexit (restore_old_foreground_pgrp); | |
b80864fb | 253 | #endif |
c906108c | 254 | |
ccd213ac DJ |
255 | if (wrapper_argv != NULL) |
256 | { | |
257 | struct thread_resume resume_info; | |
ccd213ac | 258 | |
ee47b2f8 | 259 | memset (&resume_info, 0, sizeof (resume_info)); |
95954743 | 260 | resume_info.thread = pid_to_ptid (signal_pid); |
bd99dc85 | 261 | resume_info.kind = resume_continue; |
ccd213ac | 262 | resume_info.sig = 0; |
ccd213ac | 263 | |
06db92f0 | 264 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
bd99dc85 | 265 | |
eb97750b | 266 | if (last_status.kind == TARGET_WAITKIND_STOPPED) |
ccd213ac | 267 | { |
eb97750b YQ |
268 | do |
269 | { | |
270 | (*the_target->resume) (&resume_info, 1); | |
271 | ||
272 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); | |
273 | if (last_status.kind != TARGET_WAITKIND_STOPPED) | |
274 | break; | |
275 | ||
276 | current_thread->last_resume_kind = resume_stop; | |
277 | current_thread->last_status = last_status; | |
278 | } | |
279 | while (last_status.value.sig != GDB_SIGNAL_TRAP); | |
ccd213ac | 280 | } |
c06cbd92 | 281 | target_arch_setup (); |
5b1c542e | 282 | return signal_pid; |
ccd213ac DJ |
283 | } |
284 | ||
5b1c542e PA |
285 | /* Wait till we are at 1st instruction in program, return new pid |
286 | (assuming success). */ | |
95954743 | 287 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
5b1c542e | 288 | |
c06cbd92 YQ |
289 | target_arch_setup (); |
290 | ||
d20a8ad9 PA |
291 | if (last_status.kind != TARGET_WAITKIND_EXITED |
292 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
293 | { | |
0bfdf32f GB |
294 | current_thread->last_resume_kind = resume_stop; |
295 | current_thread->last_status = last_status; | |
d20a8ad9 | 296 | } |
80ad801e PA |
297 | else |
298 | mourn_inferior (find_process_pid (ptid_get_pid (last_ptid))); | |
d20a8ad9 | 299 | |
5b1c542e | 300 | return signal_pid; |
c906108c SS |
301 | } |
302 | ||
45b7b345 | 303 | static int |
5b1c542e | 304 | attach_inferior (int pid) |
45b7b345 DJ |
305 | { |
306 | /* myattach should return -1 if attaching is unsupported, | |
307 | 0 if it succeeded, and call error() otherwise. */ | |
a9fa9f7d | 308 | |
45b7b345 DJ |
309 | if (myattach (pid) != 0) |
310 | return -1; | |
311 | ||
6910d122 | 312 | fprintf (stderr, "Attached; pid = %d\n", pid); |
b80864fb | 313 | fflush (stderr); |
6910d122 | 314 | |
a9fa9f7d DJ |
315 | /* FIXME - It may be that we should get the SIGNAL_PID from the |
316 | attach function, so that it can be the main thread instead of | |
317 | whichever we were told to attach to. */ | |
318 | signal_pid = pid; | |
319 | ||
bd99dc85 PA |
320 | if (!non_stop) |
321 | { | |
95954743 | 322 | last_ptid = mywait (pid_to_ptid (pid), &last_status, 0, 0); |
bd99dc85 PA |
323 | |
324 | /* GDB knows to ignore the first SIGSTOP after attaching to a running | |
325 | process using the "attach" command, but this is different; it's | |
326 | just using "target remote". Pretend it's just starting up. */ | |
327 | if (last_status.kind == TARGET_WAITKIND_STOPPED | |
a493e3e2 PA |
328 | && last_status.value.sig == GDB_SIGNAL_STOP) |
329 | last_status.value.sig = GDB_SIGNAL_TRAP; | |
d20a8ad9 | 330 | |
0bfdf32f GB |
331 | current_thread->last_resume_kind = resume_stop; |
332 | current_thread->last_status = last_status; | |
bd99dc85 | 333 | } |
9db87ebd | 334 | |
45b7b345 DJ |
335 | return 0; |
336 | } | |
337 | ||
c906108c | 338 | extern int remote_debug; |
ce3a066d | 339 | |
0876f84a DJ |
340 | /* Decode a qXfer read request. Return 0 if everything looks OK, |
341 | or -1 otherwise. */ | |
342 | ||
343 | static int | |
d08aafef | 344 | decode_xfer_read (char *buf, CORE_ADDR *ofs, unsigned int *len) |
0876f84a | 345 | { |
d08aafef PA |
346 | /* After the read marker and annex, qXfer looks like a |
347 | traditional 'm' packet. */ | |
348 | decode_m_packet (buf, ofs, len); | |
349 | ||
350 | return 0; | |
351 | } | |
352 | ||
353 | static int | |
354 | decode_xfer (char *buf, char **object, char **rw, char **annex, char **offset) | |
355 | { | |
356 | /* Extract and NUL-terminate the object. */ | |
357 | *object = buf; | |
358 | while (*buf && *buf != ':') | |
359 | buf++; | |
360 | if (*buf == '\0') | |
361 | return -1; | |
362 | *buf++ = 0; | |
363 | ||
364 | /* Extract and NUL-terminate the read/write action. */ | |
365 | *rw = buf; | |
366 | while (*buf && *buf != ':') | |
367 | buf++; | |
368 | if (*buf == '\0') | |
369 | return -1; | |
370 | *buf++ = 0; | |
371 | ||
0876f84a DJ |
372 | /* Extract and NUL-terminate the annex. */ |
373 | *annex = buf; | |
374 | while (*buf && *buf != ':') | |
375 | buf++; | |
376 | if (*buf == '\0') | |
377 | return -1; | |
378 | *buf++ = 0; | |
379 | ||
d08aafef | 380 | *offset = buf; |
0876f84a DJ |
381 | return 0; |
382 | } | |
383 | ||
384 | /* Write the response to a successful qXfer read. Returns the | |
385 | length of the (binary) data stored in BUF, corresponding | |
386 | to as much of DATA/LEN as we could fit. IS_MORE controls | |
387 | the first character of the response. */ | |
388 | static int | |
f98cd059 | 389 | write_qxfer_response (char *buf, const gdb_byte *data, int len, int is_more) |
0876f84a DJ |
390 | { |
391 | int out_len; | |
392 | ||
393 | if (is_more) | |
394 | buf[0] = 'm'; | |
395 | else | |
396 | buf[0] = 'l'; | |
397 | ||
124e13d9 SM |
398 | return remote_escape_output (data, len, 1, (unsigned char *) buf + 1, |
399 | &out_len, PBUFSIZ - 2) + 1; | |
0876f84a DJ |
400 | } |
401 | ||
f4abbc16 | 402 | /* Handle btrace enabling in BTS format. */ |
9accd112 MM |
403 | |
404 | static const char * | |
f4abbc16 | 405 | handle_btrace_enable_bts (struct thread_info *thread) |
9accd112 MM |
406 | { |
407 | if (thread->btrace != NULL) | |
408 | return "E.Btrace already enabled."; | |
409 | ||
f4abbc16 MM |
410 | current_btrace_conf.format = BTRACE_FORMAT_BTS; |
411 | thread->btrace = target_enable_btrace (thread->entry.id, | |
412 | ¤t_btrace_conf); | |
9accd112 MM |
413 | if (thread->btrace == NULL) |
414 | return "E.Could not enable btrace."; | |
415 | ||
416 | return NULL; | |
417 | } | |
418 | ||
b20a6524 MM |
419 | /* Handle btrace enabling in Intel(R) Processor Trace format. */ |
420 | ||
421 | static const char * | |
422 | handle_btrace_enable_pt (struct thread_info *thread) | |
423 | { | |
424 | if (thread->btrace != NULL) | |
425 | return "E.Btrace already enabled."; | |
426 | ||
427 | current_btrace_conf.format = BTRACE_FORMAT_PT; | |
428 | thread->btrace = target_enable_btrace (thread->entry.id, | |
429 | ¤t_btrace_conf); | |
430 | if (thread->btrace == NULL) | |
431 | return "E.Could not enable btrace."; | |
432 | ||
433 | return NULL; | |
434 | } | |
435 | ||
9accd112 MM |
436 | /* Handle btrace disabling. */ |
437 | ||
438 | static const char * | |
439 | handle_btrace_disable (struct thread_info *thread) | |
440 | { | |
441 | ||
442 | if (thread->btrace == NULL) | |
443 | return "E.Branch tracing not enabled."; | |
444 | ||
445 | if (target_disable_btrace (thread->btrace) != 0) | |
446 | return "E.Could not disable branch tracing."; | |
447 | ||
448 | thread->btrace = NULL; | |
449 | return NULL; | |
450 | } | |
451 | ||
452 | /* Handle the "Qbtrace" packet. */ | |
453 | ||
454 | static int | |
455 | handle_btrace_general_set (char *own_buf) | |
456 | { | |
457 | struct thread_info *thread; | |
458 | const char *err; | |
459 | char *op; | |
460 | ||
61012eef | 461 | if (!startswith (own_buf, "Qbtrace:")) |
9accd112 MM |
462 | return 0; |
463 | ||
464 | op = own_buf + strlen ("Qbtrace:"); | |
465 | ||
9accd112 MM |
466 | if (ptid_equal (general_thread, null_ptid) |
467 | || ptid_equal (general_thread, minus_one_ptid)) | |
468 | { | |
469 | strcpy (own_buf, "E.Must select a single thread."); | |
470 | return -1; | |
471 | } | |
472 | ||
473 | thread = find_thread_ptid (general_thread); | |
474 | if (thread == NULL) | |
475 | { | |
476 | strcpy (own_buf, "E.No such thread."); | |
477 | return -1; | |
478 | } | |
479 | ||
480 | err = NULL; | |
481 | ||
482 | if (strcmp (op, "bts") == 0) | |
f4abbc16 | 483 | err = handle_btrace_enable_bts (thread); |
b20a6524 MM |
484 | else if (strcmp (op, "pt") == 0) |
485 | err = handle_btrace_enable_pt (thread); | |
9accd112 MM |
486 | else if (strcmp (op, "off") == 0) |
487 | err = handle_btrace_disable (thread); | |
488 | else | |
b20a6524 | 489 | err = "E.Bad Qbtrace operation. Use bts, pt, or off."; |
9accd112 MM |
490 | |
491 | if (err != 0) | |
492 | strcpy (own_buf, err); | |
493 | else | |
494 | write_ok (own_buf); | |
495 | ||
496 | return 1; | |
497 | } | |
498 | ||
d33501a5 MM |
499 | /* Handle the "Qbtrace-conf" packet. */ |
500 | ||
501 | static int | |
502 | handle_btrace_conf_general_set (char *own_buf) | |
503 | { | |
504 | struct thread_info *thread; | |
505 | char *op; | |
506 | ||
61012eef | 507 | if (!startswith (own_buf, "Qbtrace-conf:")) |
d33501a5 MM |
508 | return 0; |
509 | ||
510 | op = own_buf + strlen ("Qbtrace-conf:"); | |
511 | ||
512 | if (ptid_equal (general_thread, null_ptid) | |
513 | || ptid_equal (general_thread, minus_one_ptid)) | |
514 | { | |
515 | strcpy (own_buf, "E.Must select a single thread."); | |
516 | return -1; | |
517 | } | |
518 | ||
519 | thread = find_thread_ptid (general_thread); | |
520 | if (thread == NULL) | |
521 | { | |
522 | strcpy (own_buf, "E.No such thread."); | |
523 | return -1; | |
524 | } | |
525 | ||
61012eef | 526 | if (startswith (op, "bts:size=")) |
d33501a5 MM |
527 | { |
528 | unsigned long size; | |
529 | char *endp = NULL; | |
530 | ||
531 | errno = 0; | |
532 | size = strtoul (op + strlen ("bts:size="), &endp, 16); | |
533 | if (endp == NULL || *endp != 0 || errno != 0 || size > UINT_MAX) | |
534 | { | |
535 | strcpy (own_buf, "E.Bad size value."); | |
536 | return -1; | |
537 | } | |
538 | ||
539 | current_btrace_conf.bts.size = (unsigned int) size; | |
540 | } | |
b20a6524 MM |
541 | else if (strncmp (op, "pt:size=", strlen ("pt:size=")) == 0) |
542 | { | |
543 | unsigned long size; | |
544 | char *endp = NULL; | |
545 | ||
546 | errno = 0; | |
547 | size = strtoul (op + strlen ("pt:size="), &endp, 16); | |
548 | if (endp == NULL || *endp != 0 || errno != 0 || size > UINT_MAX) | |
549 | { | |
550 | strcpy (own_buf, "E.Bad size value."); | |
551 | return -1; | |
552 | } | |
553 | ||
554 | current_btrace_conf.pt.size = (unsigned int) size; | |
555 | } | |
d33501a5 MM |
556 | else |
557 | { | |
558 | strcpy (own_buf, "E.Bad Qbtrace configuration option."); | |
559 | return -1; | |
560 | } | |
561 | ||
562 | write_ok (own_buf); | |
563 | return 1; | |
564 | } | |
565 | ||
89be2091 | 566 | /* Handle all of the extended 'Q' packets. */ |
ae1ada35 DE |
567 | |
568 | static void | |
89be2091 DJ |
569 | handle_general_set (char *own_buf) |
570 | { | |
61012eef | 571 | if (startswith (own_buf, "QPassSignals:")) |
89be2091 | 572 | { |
a493e3e2 | 573 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
89be2091 DJ |
574 | const char *p = own_buf + strlen ("QPassSignals:"); |
575 | CORE_ADDR cursig; | |
576 | ||
577 | p = decode_address_to_semicolon (&cursig, p); | |
578 | for (i = 0; i < numsigs; i++) | |
579 | { | |
580 | if (i == cursig) | |
581 | { | |
582 | pass_signals[i] = 1; | |
583 | if (*p == '\0') | |
584 | /* Keep looping, to clear the remaining signals. */ | |
585 | cursig = -1; | |
586 | else | |
587 | p = decode_address_to_semicolon (&cursig, p); | |
588 | } | |
589 | else | |
590 | pass_signals[i] = 0; | |
591 | } | |
592 | strcpy (own_buf, "OK"); | |
593 | return; | |
594 | } | |
595 | ||
61012eef | 596 | if (startswith (own_buf, "QProgramSignals:")) |
9b224c5e | 597 | { |
a493e3e2 | 598 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
9b224c5e PA |
599 | const char *p = own_buf + strlen ("QProgramSignals:"); |
600 | CORE_ADDR cursig; | |
601 | ||
602 | program_signals_p = 1; | |
603 | ||
604 | p = decode_address_to_semicolon (&cursig, p); | |
605 | for (i = 0; i < numsigs; i++) | |
606 | { | |
607 | if (i == cursig) | |
608 | { | |
609 | program_signals[i] = 1; | |
610 | if (*p == '\0') | |
611 | /* Keep looping, to clear the remaining signals. */ | |
612 | cursig = -1; | |
613 | else | |
614 | p = decode_address_to_semicolon (&cursig, p); | |
615 | } | |
616 | else | |
617 | program_signals[i] = 0; | |
618 | } | |
619 | strcpy (own_buf, "OK"); | |
620 | return; | |
621 | } | |
622 | ||
a6f3e723 SL |
623 | if (strcmp (own_buf, "QStartNoAckMode") == 0) |
624 | { | |
625 | if (remote_debug) | |
626 | { | |
627 | fprintf (stderr, "[noack mode enabled]\n"); | |
628 | fflush (stderr); | |
629 | } | |
630 | ||
631 | noack_mode = 1; | |
632 | write_ok (own_buf); | |
633 | return; | |
634 | } | |
635 | ||
61012eef | 636 | if (startswith (own_buf, "QNonStop:")) |
bd99dc85 PA |
637 | { |
638 | char *mode = own_buf + 9; | |
639 | int req = -1; | |
b2333d22 | 640 | const char *req_str; |
bd99dc85 PA |
641 | |
642 | if (strcmp (mode, "0") == 0) | |
643 | req = 0; | |
644 | else if (strcmp (mode, "1") == 0) | |
645 | req = 1; | |
646 | else | |
647 | { | |
648 | /* We don't know what this mode is, so complain to | |
649 | GDB. */ | |
650 | fprintf (stderr, "Unknown non-stop mode requested: %s\n", | |
651 | own_buf); | |
652 | write_enn (own_buf); | |
653 | return; | |
654 | } | |
655 | ||
656 | req_str = req ? "non-stop" : "all-stop"; | |
657 | if (start_non_stop (req) != 0) | |
658 | { | |
659 | fprintf (stderr, "Setting %s mode failed\n", req_str); | |
660 | write_enn (own_buf); | |
661 | return; | |
662 | } | |
663 | ||
664 | non_stop = req; | |
665 | ||
666 | if (remote_debug) | |
667 | fprintf (stderr, "[%s mode enabled]\n", req_str); | |
668 | ||
669 | write_ok (own_buf); | |
670 | return; | |
671 | } | |
672 | ||
61012eef | 673 | if (startswith (own_buf, "QDisableRandomization:")) |
03583c20 UW |
674 | { |
675 | char *packet = own_buf + strlen ("QDisableRandomization:"); | |
676 | ULONGEST setting; | |
677 | ||
678 | unpack_varlen_hex (packet, &setting); | |
679 | disable_randomization = setting; | |
680 | ||
681 | if (remote_debug) | |
682 | { | |
683 | if (disable_randomization) | |
684 | fprintf (stderr, "[address space randomization disabled]\n"); | |
685 | else | |
686 | fprintf (stderr, "[address space randomization enabled]\n"); | |
687 | } | |
688 | ||
689 | write_ok (own_buf); | |
690 | return; | |
691 | } | |
692 | ||
219f2f23 PA |
693 | if (target_supports_tracepoints () |
694 | && handle_tracepoint_general_set (own_buf)) | |
695 | return; | |
696 | ||
61012eef | 697 | if (startswith (own_buf, "QAgent:")) |
d1feda86 YQ |
698 | { |
699 | char *mode = own_buf + strlen ("QAgent:"); | |
700 | int req = 0; | |
701 | ||
702 | if (strcmp (mode, "0") == 0) | |
703 | req = 0; | |
704 | else if (strcmp (mode, "1") == 0) | |
705 | req = 1; | |
706 | else | |
707 | { | |
708 | /* We don't know what this value is, so complain to GDB. */ | |
709 | sprintf (own_buf, "E.Unknown QAgent value"); | |
710 | return; | |
711 | } | |
712 | ||
713 | /* Update the flag. */ | |
714 | use_agent = req; | |
715 | if (remote_debug) | |
716 | fprintf (stderr, "[%s agent]\n", req ? "Enable" : "Disable"); | |
717 | write_ok (own_buf); | |
718 | return; | |
719 | } | |
720 | ||
9accd112 MM |
721 | if (handle_btrace_general_set (own_buf)) |
722 | return; | |
723 | ||
d33501a5 MM |
724 | if (handle_btrace_conf_general_set (own_buf)) |
725 | return; | |
726 | ||
65706a29 PA |
727 | if (startswith (own_buf, "QThreadEvents:")) |
728 | { | |
729 | char *mode = own_buf + strlen ("QThreadEvents:"); | |
730 | enum tribool req = TRIBOOL_UNKNOWN; | |
731 | ||
732 | if (strcmp (mode, "0") == 0) | |
733 | req = TRIBOOL_FALSE; | |
734 | else if (strcmp (mode, "1") == 0) | |
735 | req = TRIBOOL_TRUE; | |
736 | else | |
737 | { | |
738 | char *mode_copy = xstrdup (mode); | |
739 | ||
740 | /* We don't know what this mode is, so complain to GDB. */ | |
741 | sprintf (own_buf, "E.Unknown thread-events mode requested: %s\n", | |
742 | mode_copy); | |
743 | xfree (mode_copy); | |
744 | return; | |
745 | } | |
746 | ||
747 | report_thread_events = (req == TRIBOOL_TRUE); | |
748 | ||
749 | if (remote_debug) | |
750 | { | |
751 | const char *req_str = report_thread_events ? "enabled" : "disabled"; | |
752 | ||
753 | fprintf (stderr, "[thread events are now %s]\n", req_str); | |
754 | } | |
755 | ||
756 | write_ok (own_buf); | |
757 | return; | |
758 | } | |
759 | ||
89be2091 DJ |
760 | /* Otherwise we didn't know what packet it was. Say we didn't |
761 | understand it. */ | |
762 | own_buf[0] = 0; | |
763 | } | |
764 | ||
23181151 | 765 | static const char * |
fb1e4ffc | 766 | get_features_xml (const char *annex) |
23181151 | 767 | { |
3aee8918 PA |
768 | const struct target_desc *desc = current_target_desc (); |
769 | ||
770 | /* `desc->xmltarget' defines what to return when looking for the | |
771 | "target.xml" file. Its contents can either be verbatim XML code | |
772 | (prefixed with a '@') or else the name of the actual XML file to | |
773 | be used in place of "target.xml". | |
fb1e4ffc | 774 | |
9b4b61c8 UW |
775 | This variable is set up from the auto-generated |
776 | init_registers_... routine for the current target. */ | |
fb1e4ffc | 777 | |
3aee8918 | 778 | if (desc->xmltarget != NULL && strcmp (annex, "target.xml") == 0) |
23181151 | 779 | { |
3aee8918 PA |
780 | if (*desc->xmltarget == '@') |
781 | return desc->xmltarget + 1; | |
23181151 | 782 | else |
3aee8918 | 783 | annex = desc->xmltarget; |
23181151 DJ |
784 | } |
785 | ||
9b4b61c8 UW |
786 | #ifdef USE_XML |
787 | { | |
788 | extern const char *const xml_builtin[][2]; | |
789 | int i; | |
790 | ||
791 | /* Look for the annex. */ | |
792 | for (i = 0; xml_builtin[i][0] != NULL; i++) | |
793 | if (strcmp (annex, xml_builtin[i][0]) == 0) | |
794 | break; | |
795 | ||
796 | if (xml_builtin[i][0] != NULL) | |
797 | return xml_builtin[i][1]; | |
798 | } | |
799 | #endif | |
800 | ||
801 | return NULL; | |
23181151 DJ |
802 | } |
803 | ||
c74d0ad8 DJ |
804 | void |
805 | monitor_show_help (void) | |
806 | { | |
807 | monitor_output ("The following monitor commands are supported:\n"); | |
808 | monitor_output (" set debug <0|1>\n"); | |
1b3f6016 | 809 | monitor_output (" Enable general debugging messages\n"); |
aa5ca48f DE |
810 | monitor_output (" set debug-hw-points <0|1>\n"); |
811 | monitor_output (" Enable h/w breakpoint/watchpoint debugging messages\n"); | |
c74d0ad8 DJ |
812 | monitor_output (" set remote-debug <0|1>\n"); |
813 | monitor_output (" Enable remote protocol debugging messages\n"); | |
87ce2a04 DE |
814 | monitor_output (" set debug-format option1[,option2,...]\n"); |
815 | monitor_output (" Add additional information to debugging messages\n"); | |
816 | monitor_output (" Options: all, none"); | |
87ce2a04 | 817 | monitor_output (", timestamp"); |
87ce2a04 | 818 | monitor_output ("\n"); |
ecd7ecbc DJ |
819 | monitor_output (" exit\n"); |
820 | monitor_output (" Quit GDBserver\n"); | |
c74d0ad8 DJ |
821 | } |
822 | ||
764880b7 PA |
823 | /* Read trace frame or inferior memory. Returns the number of bytes |
824 | actually read, zero when no further transfer is possible, and -1 on | |
825 | error. Return of a positive value smaller than LEN does not | |
826 | indicate there's no more to be read, only the end of the transfer. | |
827 | E.g., when GDB reads memory from a traceframe, a first request may | |
828 | be served from a memory block that does not cover the whole request | |
829 | length. A following request gets the rest served from either | |
830 | another block (of the same traceframe) or from the read-only | |
831 | regions. */ | |
219f2f23 PA |
832 | |
833 | static int | |
90d74c30 | 834 | gdb_read_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) |
219f2f23 | 835 | { |
764880b7 | 836 | int res; |
90d74c30 | 837 | |
219f2f23 PA |
838 | if (current_traceframe >= 0) |
839 | { | |
840 | ULONGEST nbytes; | |
841 | ULONGEST length = len; | |
842 | ||
843 | if (traceframe_read_mem (current_traceframe, | |
844 | memaddr, myaddr, len, &nbytes)) | |
9a13b2fa | 845 | return -1; |
219f2f23 | 846 | /* Data read from trace buffer, we're done. */ |
764880b7 PA |
847 | if (nbytes > 0) |
848 | return nbytes; | |
219f2f23 | 849 | if (!in_readonly_region (memaddr, length)) |
764880b7 | 850 | return -1; |
219f2f23 PA |
851 | /* Otherwise we have a valid readonly case, fall through. */ |
852 | /* (assume no half-trace half-real blocks for now) */ | |
853 | } | |
854 | ||
764880b7 PA |
855 | res = prepare_to_access_memory (); |
856 | if (res == 0) | |
90d74c30 | 857 | { |
f0db101d PA |
858 | if (set_desired_thread (1)) |
859 | res = read_inferior_memory (memaddr, myaddr, len); | |
860 | else | |
861 | res = 1; | |
0146f85b | 862 | done_accessing_memory (); |
90d74c30 | 863 | |
764880b7 PA |
864 | return res == 0 ? len : -1; |
865 | } | |
866 | else | |
867 | return -1; | |
219f2f23 PA |
868 | } |
869 | ||
870 | /* Write trace frame or inferior memory. Actually, writing to trace | |
871 | frames is forbidden. */ | |
872 | ||
873 | static int | |
90d74c30 | 874 | gdb_write_memory (CORE_ADDR memaddr, const unsigned char *myaddr, int len) |
219f2f23 PA |
875 | { |
876 | if (current_traceframe >= 0) | |
877 | return EIO; | |
878 | else | |
90d74c30 PA |
879 | { |
880 | int ret; | |
881 | ||
882 | ret = prepare_to_access_memory (); | |
883 | if (ret == 0) | |
884 | { | |
f0db101d PA |
885 | if (set_desired_thread (1)) |
886 | ret = write_inferior_memory (memaddr, myaddr, len); | |
887 | else | |
888 | ret = EIO; | |
0146f85b | 889 | done_accessing_memory (); |
90d74c30 PA |
890 | } |
891 | return ret; | |
892 | } | |
219f2f23 PA |
893 | } |
894 | ||
08388c79 DE |
895 | /* Subroutine of handle_search_memory to simplify it. */ |
896 | ||
897 | static int | |
898 | handle_search_memory_1 (CORE_ADDR start_addr, CORE_ADDR search_space_len, | |
899 | gdb_byte *pattern, unsigned pattern_len, | |
900 | gdb_byte *search_buf, | |
901 | unsigned chunk_size, unsigned search_buf_size, | |
902 | CORE_ADDR *found_addrp) | |
903 | { | |
904 | /* Prime the search buffer. */ | |
905 | ||
764880b7 PA |
906 | if (gdb_read_memory (start_addr, search_buf, search_buf_size) |
907 | != search_buf_size) | |
08388c79 | 908 | { |
b3dc46ff AB |
909 | warning ("Unable to access %ld bytes of target " |
910 | "memory at 0x%lx, halting search.", | |
911 | (long) search_buf_size, (long) start_addr); | |
08388c79 DE |
912 | return -1; |
913 | } | |
914 | ||
915 | /* Perform the search. | |
916 | ||
917 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
918 | When we've scanned N bytes we copy the trailing bytes to the start and | |
919 | read in another N bytes. */ | |
920 | ||
921 | while (search_space_len >= pattern_len) | |
922 | { | |
923 | gdb_byte *found_ptr; | |
924 | unsigned nr_search_bytes = (search_space_len < search_buf_size | |
925 | ? search_space_len | |
926 | : search_buf_size); | |
927 | ||
d6f85c84 SM |
928 | found_ptr = (gdb_byte *) memmem (search_buf, nr_search_bytes, pattern, |
929 | pattern_len); | |
08388c79 DE |
930 | |
931 | if (found_ptr != NULL) | |
932 | { | |
933 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
934 | *found_addrp = found_addr; | |
935 | return 1; | |
936 | } | |
937 | ||
938 | /* Not found in this chunk, skip to next chunk. */ | |
939 | ||
940 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
941 | if (search_space_len >= chunk_size) | |
942 | search_space_len -= chunk_size; | |
943 | else | |
944 | search_space_len = 0; | |
945 | ||
946 | if (search_space_len >= pattern_len) | |
947 | { | |
948 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 949 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
950 | int nr_to_read; |
951 | ||
952 | /* Copy the trailing part of the previous iteration to the front | |
953 | of the buffer for the next iteration. */ | |
954 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
955 | ||
956 | nr_to_read = (search_space_len - keep_len < chunk_size | |
957 | ? search_space_len - keep_len | |
958 | : chunk_size); | |
959 | ||
90d74c30 | 960 | if (gdb_read_memory (read_addr, search_buf + keep_len, |
764880b7 | 961 | nr_to_read) != search_buf_size) |
08388c79 | 962 | { |
b3dc46ff | 963 | warning ("Unable to access %ld bytes of target memory " |
493e2a69 | 964 | "at 0x%lx, halting search.", |
b3dc46ff | 965 | (long) nr_to_read, (long) read_addr); |
08388c79 DE |
966 | return -1; |
967 | } | |
968 | ||
969 | start_addr += chunk_size; | |
970 | } | |
971 | } | |
972 | ||
973 | /* Not found. */ | |
974 | ||
975 | return 0; | |
976 | } | |
977 | ||
978 | /* Handle qSearch:memory packets. */ | |
979 | ||
980 | static void | |
981 | handle_search_memory (char *own_buf, int packet_len) | |
982 | { | |
983 | CORE_ADDR start_addr; | |
984 | CORE_ADDR search_space_len; | |
985 | gdb_byte *pattern; | |
986 | unsigned int pattern_len; | |
987 | /* NOTE: also defined in find.c testcase. */ | |
988 | #define SEARCH_CHUNK_SIZE 16000 | |
989 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
990 | /* Buffer to hold memory contents for searching. */ | |
991 | gdb_byte *search_buf; | |
992 | unsigned search_buf_size; | |
993 | int found; | |
994 | CORE_ADDR found_addr; | |
995 | int cmd_name_len = sizeof ("qSearch:memory:") - 1; | |
996 | ||
224c3ddb | 997 | pattern = (gdb_byte *) malloc (packet_len); |
08388c79 DE |
998 | if (pattern == NULL) |
999 | { | |
5e1471f5 | 1000 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
1001 | strcpy (own_buf, "E00"); |
1002 | return; | |
1003 | } | |
1004 | if (decode_search_memory_packet (own_buf + cmd_name_len, | |
1005 | packet_len - cmd_name_len, | |
1006 | &start_addr, &search_space_len, | |
1007 | pattern, &pattern_len) < 0) | |
1008 | { | |
1009 | free (pattern); | |
5e1471f5 | 1010 | error ("Error in parsing qSearch:memory packet"); |
08388c79 DE |
1011 | strcpy (own_buf, "E00"); |
1012 | return; | |
1013 | } | |
1014 | ||
1015 | search_buf_size = chunk_size + pattern_len - 1; | |
1016 | ||
1017 | /* No point in trying to allocate a buffer larger than the search space. */ | |
1018 | if (search_space_len < search_buf_size) | |
1019 | search_buf_size = search_space_len; | |
1020 | ||
224c3ddb | 1021 | search_buf = (gdb_byte *) malloc (search_buf_size); |
08388c79 DE |
1022 | if (search_buf == NULL) |
1023 | { | |
1024 | free (pattern); | |
5e1471f5 | 1025 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
1026 | strcpy (own_buf, "E00"); |
1027 | return; | |
1028 | } | |
1029 | ||
1030 | found = handle_search_memory_1 (start_addr, search_space_len, | |
1031 | pattern, pattern_len, | |
1032 | search_buf, chunk_size, search_buf_size, | |
1033 | &found_addr); | |
1034 | ||
1035 | if (found > 0) | |
1036 | sprintf (own_buf, "1,%lx", (long) found_addr); | |
1037 | else if (found == 0) | |
1038 | strcpy (own_buf, "0"); | |
1039 | else | |
1040 | strcpy (own_buf, "E00"); | |
1041 | ||
1042 | free (search_buf); | |
1043 | free (pattern); | |
1044 | } | |
1045 | ||
2d717e4f DJ |
1046 | #define require_running(BUF) \ |
1047 | if (!target_running ()) \ | |
1048 | { \ | |
1049 | write_enn (BUF); \ | |
1050 | return; \ | |
1051 | } | |
1052 | ||
87ce2a04 DE |
1053 | /* Parse options to --debug-format= and "monitor set debug-format". |
1054 | ARG is the text after "--debug-format=" or "monitor set debug-format". | |
1055 | IS_MONITOR is non-zero if we're invoked via "monitor set debug-format". | |
1056 | This triggers calls to monitor_output. | |
1057 | The result is NULL if all options were parsed ok, otherwise an error | |
1058 | message which the caller must free. | |
1059 | ||
1060 | N.B. These commands affect all debug format settings, they are not | |
1061 | cumulative. If a format is not specified, it is turned off. | |
1062 | However, we don't go to extra trouble with things like | |
1063 | "monitor set debug-format all,none,timestamp". | |
1064 | Instead we just parse them one at a time, in order. | |
1065 | ||
1066 | The syntax for "monitor set debug" we support here is not identical | |
1067 | to gdb's "set debug foo on|off" because we also use this function to | |
1068 | parse "--debug-format=foo,bar". */ | |
1069 | ||
1070 | static char * | |
1071 | parse_debug_format_options (const char *arg, int is_monitor) | |
1072 | { | |
1073 | VEC (char_ptr) *options; | |
1074 | int ix; | |
1075 | char *option; | |
1076 | ||
1077 | /* First turn all debug format options off. */ | |
1078 | debug_timestamp = 0; | |
1079 | ||
1080 | /* First remove leading spaces, for "monitor set debug-format". */ | |
1081 | while (isspace (*arg)) | |
1082 | ++arg; | |
1083 | ||
1084 | options = delim_string_to_char_ptr_vec (arg, ','); | |
1085 | ||
1086 | for (ix = 0; VEC_iterate (char_ptr, options, ix, option); ++ix) | |
1087 | { | |
1088 | if (strcmp (option, "all") == 0) | |
1089 | { | |
1090 | debug_timestamp = 1; | |
1091 | if (is_monitor) | |
1092 | monitor_output ("All extra debug format options enabled.\n"); | |
1093 | } | |
1094 | else if (strcmp (option, "none") == 0) | |
1095 | { | |
1096 | debug_timestamp = 0; | |
1097 | if (is_monitor) | |
1098 | monitor_output ("All extra debug format options disabled.\n"); | |
1099 | } | |
87ce2a04 DE |
1100 | else if (strcmp (option, "timestamp") == 0) |
1101 | { | |
1102 | debug_timestamp = 1; | |
1103 | if (is_monitor) | |
1104 | monitor_output ("Timestamps will be added to debug output.\n"); | |
1105 | } | |
87ce2a04 DE |
1106 | else if (*option == '\0') |
1107 | { | |
1108 | /* An empty option, e.g., "--debug-format=foo,,bar", is ignored. */ | |
1109 | continue; | |
1110 | } | |
1111 | else | |
1112 | { | |
1113 | char *msg = xstrprintf ("Unknown debug-format argument: \"%s\"\n", | |
1114 | option); | |
1115 | ||
1116 | free_char_ptr_vec (options); | |
1117 | return msg; | |
1118 | } | |
1119 | } | |
1120 | ||
1121 | free_char_ptr_vec (options); | |
1122 | return NULL; | |
1123 | } | |
1124 | ||
cdbfd419 PP |
1125 | /* Handle monitor commands not handled by target-specific handlers. */ |
1126 | ||
1127 | static void | |
d73f2619 | 1128 | handle_monitor_command (char *mon, char *own_buf) |
cdbfd419 PP |
1129 | { |
1130 | if (strcmp (mon, "set debug 1") == 0) | |
1131 | { | |
1132 | debug_threads = 1; | |
1133 | monitor_output ("Debug output enabled.\n"); | |
1134 | } | |
1135 | else if (strcmp (mon, "set debug 0") == 0) | |
1136 | { | |
1137 | debug_threads = 0; | |
1138 | monitor_output ("Debug output disabled.\n"); | |
1139 | } | |
1140 | else if (strcmp (mon, "set debug-hw-points 1") == 0) | |
1141 | { | |
c5e92cca | 1142 | show_debug_regs = 1; |
cdbfd419 PP |
1143 | monitor_output ("H/W point debugging output enabled.\n"); |
1144 | } | |
1145 | else if (strcmp (mon, "set debug-hw-points 0") == 0) | |
1146 | { | |
c5e92cca | 1147 | show_debug_regs = 0; |
cdbfd419 PP |
1148 | monitor_output ("H/W point debugging output disabled.\n"); |
1149 | } | |
1150 | else if (strcmp (mon, "set remote-debug 1") == 0) | |
1151 | { | |
1152 | remote_debug = 1; | |
1153 | monitor_output ("Protocol debug output enabled.\n"); | |
1154 | } | |
1155 | else if (strcmp (mon, "set remote-debug 0") == 0) | |
1156 | { | |
1157 | remote_debug = 0; | |
1158 | monitor_output ("Protocol debug output disabled.\n"); | |
1159 | } | |
61012eef | 1160 | else if (startswith (mon, "set debug-format ")) |
87ce2a04 DE |
1161 | { |
1162 | char *error_msg | |
1163 | = parse_debug_format_options (mon + sizeof ("set debug-format ") - 1, | |
1164 | 1); | |
1165 | ||
1166 | if (error_msg != NULL) | |
1167 | { | |
1168 | monitor_output (error_msg); | |
1169 | monitor_show_help (); | |
1170 | write_enn (own_buf); | |
1171 | xfree (error_msg); | |
1172 | } | |
1173 | } | |
cdbfd419 PP |
1174 | else if (strcmp (mon, "help") == 0) |
1175 | monitor_show_help (); | |
1176 | else if (strcmp (mon, "exit") == 0) | |
1177 | exit_requested = 1; | |
1178 | else | |
1179 | { | |
1180 | monitor_output ("Unknown monitor command.\n\n"); | |
1181 | monitor_show_help (); | |
1182 | write_enn (own_buf); | |
1183 | } | |
1184 | } | |
1185 | ||
d08aafef PA |
1186 | /* Associates a callback with each supported qXfer'able object. */ |
1187 | ||
1188 | struct qxfer | |
1189 | { | |
1190 | /* The object this handler handles. */ | |
1191 | const char *object; | |
1192 | ||
1193 | /* Request that the target transfer up to LEN 8-bit bytes of the | |
1194 | target's OBJECT. The OFFSET, for a seekable object, specifies | |
1195 | the starting point. The ANNEX can be used to provide additional | |
1196 | data-specific information to the target. | |
1197 | ||
1198 | Return the number of bytes actually transfered, zero when no | |
5cc22e4c MM |
1199 | further transfer is possible, -1 on error, -2 when the transfer |
1200 | is not supported, and -3 on a verbose error message that should | |
1201 | be preserved. Return of a positive value smaller than LEN does | |
1202 | not indicate the end of the object, only the end of the transfer. | |
d08aafef PA |
1203 | |
1204 | One, and only one, of readbuf or writebuf must be non-NULL. */ | |
1205 | int (*xfer) (const char *annex, | |
1206 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1207 | ULONGEST offset, LONGEST len); | |
1208 | }; | |
1209 | ||
1210 | /* Handle qXfer:auxv:read. */ | |
1211 | ||
1212 | static int | |
1213 | handle_qxfer_auxv (const char *annex, | |
1214 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1215 | ULONGEST offset, LONGEST len) | |
1216 | { | |
1217 | if (the_target->read_auxv == NULL || writebuf != NULL) | |
1218 | return -2; | |
1219 | ||
f0db101d | 1220 | if (annex[0] != '\0' || current_thread == NULL) |
d08aafef PA |
1221 | return -1; |
1222 | ||
1223 | return (*the_target->read_auxv) (offset, readbuf, len); | |
1224 | } | |
1225 | ||
e57f1de3 GB |
1226 | /* Handle qXfer:exec-file:read. */ |
1227 | ||
1228 | static int | |
1229 | handle_qxfer_exec_file (const char *const_annex, | |
1230 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1231 | ULONGEST offset, LONGEST len) | |
1232 | { | |
835205d0 | 1233 | char *file; |
e57f1de3 GB |
1234 | ULONGEST pid; |
1235 | int total_len; | |
1236 | ||
1237 | if (the_target->pid_to_exec_file == NULL || writebuf != NULL) | |
1238 | return -2; | |
1239 | ||
835205d0 GB |
1240 | if (const_annex[0] == '\0') |
1241 | { | |
1242 | if (current_thread == NULL) | |
1243 | return -1; | |
1244 | ||
1245 | pid = pid_of (current_thread); | |
1246 | } | |
1247 | else | |
1248 | { | |
224c3ddb | 1249 | char *annex = (char *) alloca (strlen (const_annex) + 1); |
835205d0 GB |
1250 | |
1251 | strcpy (annex, const_annex); | |
1252 | annex = unpack_varlen_hex (annex, &pid); | |
1253 | ||
1254 | if (annex[0] != '\0') | |
1255 | return -1; | |
1256 | } | |
1257 | ||
1258 | if (pid <= 0) | |
e57f1de3 GB |
1259 | return -1; |
1260 | ||
1261 | file = (*the_target->pid_to_exec_file) (pid); | |
1262 | if (file == NULL) | |
1263 | return -1; | |
1264 | ||
1265 | total_len = strlen (file); | |
1266 | ||
1267 | if (offset > total_len) | |
1268 | return -1; | |
1269 | ||
1270 | if (offset + len > total_len) | |
1271 | len = total_len - offset; | |
1272 | ||
1273 | memcpy (readbuf, file + offset, len); | |
1274 | return len; | |
1275 | } | |
1276 | ||
d08aafef PA |
1277 | /* Handle qXfer:features:read. */ |
1278 | ||
1279 | static int | |
1280 | handle_qxfer_features (const char *annex, | |
1281 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1282 | ULONGEST offset, LONGEST len) | |
1283 | { | |
1284 | const char *document; | |
1285 | size_t total_len; | |
1286 | ||
1287 | if (writebuf != NULL) | |
1288 | return -2; | |
1289 | ||
1290 | if (!target_running ()) | |
1291 | return -1; | |
1292 | ||
1293 | /* Grab the correct annex. */ | |
1294 | document = get_features_xml (annex); | |
1295 | if (document == NULL) | |
1296 | return -1; | |
1297 | ||
1298 | total_len = strlen (document); | |
1299 | ||
1300 | if (offset > total_len) | |
1301 | return -1; | |
1302 | ||
1303 | if (offset + len > total_len) | |
1304 | len = total_len - offset; | |
1305 | ||
1306 | memcpy (readbuf, document + offset, len); | |
1307 | return len; | |
1308 | } | |
1309 | ||
649ebbca DE |
1310 | /* Worker routine for handle_qxfer_libraries. |
1311 | Add to the length pointed to by ARG a conservative estimate of the | |
1312 | length needed to transmit the file name of INF. */ | |
1313 | ||
1314 | static void | |
1315 | accumulate_file_name_length (struct inferior_list_entry *inf, void *arg) | |
1316 | { | |
1317 | struct dll_info *dll = (struct dll_info *) inf; | |
9a3c8263 | 1318 | unsigned int *total_len = (unsigned int *) arg; |
649ebbca DE |
1319 | |
1320 | /* Over-estimate the necessary memory. Assume that every character | |
1321 | in the library name must be escaped. */ | |
1322 | *total_len += 128 + 6 * strlen (dll->name); | |
1323 | } | |
1324 | ||
1325 | /* Worker routine for handle_qxfer_libraries. | |
1326 | Emit the XML to describe the library in INF. */ | |
1327 | ||
1328 | static void | |
1329 | emit_dll_description (struct inferior_list_entry *inf, void *arg) | |
1330 | { | |
1331 | struct dll_info *dll = (struct dll_info *) inf; | |
9a3c8263 | 1332 | char **p_ptr = (char **) arg; |
649ebbca DE |
1333 | char *p = *p_ptr; |
1334 | char *name; | |
1335 | ||
1336 | strcpy (p, " <library name=\""); | |
1337 | p = p + strlen (p); | |
1338 | name = xml_escape_text (dll->name); | |
1339 | strcpy (p, name); | |
1340 | free (name); | |
1341 | p = p + strlen (p); | |
1342 | strcpy (p, "\"><segment address=\""); | |
1343 | p = p + strlen (p); | |
1344 | sprintf (p, "0x%lx", (long) dll->base_addr); | |
1345 | p = p + strlen (p); | |
1346 | strcpy (p, "\"/></library>\n"); | |
1347 | p = p + strlen (p); | |
1348 | ||
1349 | *p_ptr = p; | |
1350 | } | |
1351 | ||
d08aafef PA |
1352 | /* Handle qXfer:libraries:read. */ |
1353 | ||
1354 | static int | |
1355 | handle_qxfer_libraries (const char *annex, | |
1356 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1357 | ULONGEST offset, LONGEST len) | |
1358 | { | |
1359 | unsigned int total_len; | |
1360 | char *document, *p; | |
d08aafef PA |
1361 | |
1362 | if (writebuf != NULL) | |
1363 | return -2; | |
1364 | ||
f0db101d | 1365 | if (annex[0] != '\0' || current_thread == NULL) |
d08aafef PA |
1366 | return -1; |
1367 | ||
d08aafef | 1368 | total_len = 64; |
649ebbca DE |
1369 | for_each_inferior_with_data (&all_dlls, accumulate_file_name_length, |
1370 | &total_len); | |
d08aafef | 1371 | |
224c3ddb | 1372 | document = (char *) malloc (total_len); |
d08aafef PA |
1373 | if (document == NULL) |
1374 | return -1; | |
1375 | ||
24c05f46 | 1376 | strcpy (document, "<library-list version=\"1.0\">\n"); |
d08aafef PA |
1377 | p = document + strlen (document); |
1378 | ||
649ebbca | 1379 | for_each_inferior_with_data (&all_dlls, emit_dll_description, &p); |
d08aafef PA |
1380 | |
1381 | strcpy (p, "</library-list>\n"); | |
1382 | ||
1383 | total_len = strlen (document); | |
1384 | ||
1385 | if (offset > total_len) | |
1386 | { | |
1387 | free (document); | |
1388 | return -1; | |
1389 | } | |
1390 | ||
1391 | if (offset + len > total_len) | |
1392 | len = total_len - offset; | |
1393 | ||
1394 | memcpy (readbuf, document + offset, len); | |
1395 | free (document); | |
1396 | return len; | |
1397 | } | |
1398 | ||
2268b414 JK |
1399 | /* Handle qXfer:libraries-svr4:read. */ |
1400 | ||
1401 | static int | |
1402 | handle_qxfer_libraries_svr4 (const char *annex, | |
1403 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1404 | ULONGEST offset, LONGEST len) | |
1405 | { | |
1406 | if (writebuf != NULL) | |
1407 | return -2; | |
1408 | ||
f0db101d | 1409 | if (current_thread == NULL || the_target->qxfer_libraries_svr4 == NULL) |
2268b414 JK |
1410 | return -1; |
1411 | ||
1412 | return the_target->qxfer_libraries_svr4 (annex, readbuf, writebuf, offset, len); | |
1413 | } | |
1414 | ||
d08aafef PA |
1415 | /* Handle qXfer:osadata:read. */ |
1416 | ||
1417 | static int | |
1418 | handle_qxfer_osdata (const char *annex, | |
1419 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1420 | ULONGEST offset, LONGEST len) | |
1421 | { | |
1422 | if (the_target->qxfer_osdata == NULL || writebuf != NULL) | |
1423 | return -2; | |
1424 | ||
1425 | return (*the_target->qxfer_osdata) (annex, readbuf, NULL, offset, len); | |
1426 | } | |
1427 | ||
1428 | /* Handle qXfer:siginfo:read and qXfer:siginfo:write. */ | |
1429 | ||
1430 | static int | |
1431 | handle_qxfer_siginfo (const char *annex, | |
1432 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1433 | ULONGEST offset, LONGEST len) | |
1434 | { | |
1435 | if (the_target->qxfer_siginfo == NULL) | |
1436 | return -2; | |
1437 | ||
f0db101d | 1438 | if (annex[0] != '\0' || current_thread == NULL) |
d08aafef PA |
1439 | return -1; |
1440 | ||
1441 | return (*the_target->qxfer_siginfo) (annex, readbuf, writebuf, offset, len); | |
1442 | } | |
1443 | ||
1444 | /* Handle qXfer:spu:read and qXfer:spu:write. */ | |
1445 | ||
1446 | static int | |
1447 | handle_qxfer_spu (const char *annex, | |
1448 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1449 | ULONGEST offset, LONGEST len) | |
1450 | { | |
1451 | if (the_target->qxfer_spu == NULL) | |
1452 | return -2; | |
1453 | ||
f0db101d | 1454 | if (current_thread == NULL) |
d08aafef PA |
1455 | return -1; |
1456 | ||
1457 | return (*the_target->qxfer_spu) (annex, readbuf, writebuf, offset, len); | |
1458 | } | |
1459 | ||
1460 | /* Handle qXfer:statictrace:read. */ | |
1461 | ||
1462 | static int | |
1463 | handle_qxfer_statictrace (const char *annex, | |
1464 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1465 | ULONGEST offset, LONGEST len) | |
1466 | { | |
1467 | ULONGEST nbytes; | |
1468 | ||
1469 | if (writebuf != NULL) | |
1470 | return -2; | |
1471 | ||
f0db101d | 1472 | if (annex[0] != '\0' || current_thread == NULL || current_traceframe == -1) |
d08aafef PA |
1473 | return -1; |
1474 | ||
1475 | if (traceframe_read_sdata (current_traceframe, offset, | |
1476 | readbuf, len, &nbytes)) | |
1477 | return -1; | |
1478 | return nbytes; | |
1479 | } | |
1480 | ||
649ebbca DE |
1481 | /* Helper for handle_qxfer_threads_proper. |
1482 | Emit the XML to describe the thread of INF. */ | |
d08aafef | 1483 | |
dc146f7c | 1484 | static void |
649ebbca | 1485 | handle_qxfer_threads_worker (struct inferior_list_entry *inf, void *arg) |
dc146f7c | 1486 | { |
649ebbca | 1487 | struct thread_info *thread = (struct thread_info *) inf; |
9a3c8263 | 1488 | struct buffer *buffer = (struct buffer *) arg; |
649ebbca DE |
1489 | ptid_t ptid = thread_to_gdb_id (thread); |
1490 | char ptid_s[100]; | |
1491 | int core = target_core_of_thread (ptid); | |
1492 | char core_s[21]; | |
79efa585 | 1493 | const char *name = target_thread_name (ptid); |
dc146f7c | 1494 | |
649ebbca | 1495 | write_ptid (ptid_s, ptid); |
dc146f7c | 1496 | |
79efa585 SM |
1497 | buffer_xml_printf (buffer, "<thread id=\"%s\"", ptid_s); |
1498 | ||
649ebbca | 1499 | if (core != -1) |
dc146f7c | 1500 | { |
649ebbca | 1501 | sprintf (core_s, "%d", core); |
79efa585 | 1502 | buffer_xml_printf (buffer, " core=\"%s\"", core_s); |
649ebbca | 1503 | } |
79efa585 SM |
1504 | |
1505 | if (name != NULL) | |
1506 | buffer_xml_printf (buffer, " name=\"%s\"", name); | |
1507 | ||
1508 | buffer_xml_printf (buffer, "/>\n"); | |
649ebbca | 1509 | } |
dc146f7c | 1510 | |
649ebbca | 1511 | /* Helper for handle_qxfer_threads. */ |
dc146f7c | 1512 | |
649ebbca DE |
1513 | static void |
1514 | handle_qxfer_threads_proper (struct buffer *buffer) | |
1515 | { | |
1516 | buffer_grow_str (buffer, "<threads>\n"); | |
1517 | ||
1518 | for_each_inferior_with_data (&all_threads, handle_qxfer_threads_worker, | |
1519 | buffer); | |
dc146f7c VP |
1520 | |
1521 | buffer_grow_str0 (buffer, "</threads>\n"); | |
1522 | } | |
1523 | ||
d08aafef PA |
1524 | /* Handle qXfer:threads:read. */ |
1525 | ||
dc146f7c | 1526 | static int |
d08aafef PA |
1527 | handle_qxfer_threads (const char *annex, |
1528 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1529 | ULONGEST offset, LONGEST len) | |
dc146f7c VP |
1530 | { |
1531 | static char *result = 0; | |
1532 | static unsigned int result_length = 0; | |
1533 | ||
d08aafef PA |
1534 | if (writebuf != NULL) |
1535 | return -2; | |
1536 | ||
f0db101d | 1537 | if (annex[0] != '\0') |
d08aafef | 1538 | return -1; |
dc146f7c VP |
1539 | |
1540 | if (offset == 0) | |
1541 | { | |
1542 | struct buffer buffer; | |
1543 | /* When asked for data at offset 0, generate everything and store into | |
1544 | 'result'. Successive reads will be served off 'result'. */ | |
1545 | if (result) | |
1546 | free (result); | |
1547 | ||
1548 | buffer_init (&buffer); | |
1549 | ||
d08aafef | 1550 | handle_qxfer_threads_proper (&buffer); |
dc146f7c VP |
1551 | |
1552 | result = buffer_finish (&buffer); | |
1553 | result_length = strlen (result); | |
1554 | buffer_free (&buffer); | |
1555 | } | |
1556 | ||
1557 | if (offset >= result_length) | |
1558 | { | |
1559 | /* We're out of data. */ | |
1560 | free (result); | |
1561 | result = NULL; | |
1562 | result_length = 0; | |
1563 | return 0; | |
1564 | } | |
1565 | ||
d08aafef PA |
1566 | if (len > result_length - offset) |
1567 | len = result_length - offset; | |
1568 | ||
1569 | memcpy (readbuf, result + offset, len); | |
1570 | ||
1571 | return len; | |
1572 | } | |
1573 | ||
b3b9301e PA |
1574 | /* Handle qXfer:traceframe-info:read. */ |
1575 | ||
1576 | static int | |
1577 | handle_qxfer_traceframe_info (const char *annex, | |
1578 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1579 | ULONGEST offset, LONGEST len) | |
1580 | { | |
1581 | static char *result = 0; | |
1582 | static unsigned int result_length = 0; | |
1583 | ||
1584 | if (writebuf != NULL) | |
1585 | return -2; | |
1586 | ||
1587 | if (!target_running () || annex[0] != '\0' || current_traceframe == -1) | |
1588 | return -1; | |
1589 | ||
1590 | if (offset == 0) | |
1591 | { | |
1592 | struct buffer buffer; | |
1593 | ||
1594 | /* When asked for data at offset 0, generate everything and | |
1595 | store into 'result'. Successive reads will be served off | |
1596 | 'result'. */ | |
1597 | free (result); | |
1598 | ||
1599 | buffer_init (&buffer); | |
1600 | ||
1601 | traceframe_read_info (current_traceframe, &buffer); | |
1602 | ||
1603 | result = buffer_finish (&buffer); | |
1604 | result_length = strlen (result); | |
1605 | buffer_free (&buffer); | |
1606 | } | |
1607 | ||
1608 | if (offset >= result_length) | |
1609 | { | |
1610 | /* We're out of data. */ | |
1611 | free (result); | |
1612 | result = NULL; | |
1613 | result_length = 0; | |
1614 | return 0; | |
1615 | } | |
1616 | ||
1617 | if (len > result_length - offset) | |
1618 | len = result_length - offset; | |
1619 | ||
1620 | memcpy (readbuf, result + offset, len); | |
1621 | return len; | |
1622 | } | |
1623 | ||
78d85199 YQ |
1624 | /* Handle qXfer:fdpic:read. */ |
1625 | ||
1626 | static int | |
1627 | handle_qxfer_fdpic (const char *annex, gdb_byte *readbuf, | |
1628 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1629 | { | |
1630 | if (the_target->read_loadmap == NULL) | |
1631 | return -2; | |
1632 | ||
f0db101d | 1633 | if (current_thread == NULL) |
78d85199 YQ |
1634 | return -1; |
1635 | ||
1636 | return (*the_target->read_loadmap) (annex, offset, readbuf, len); | |
1637 | } | |
1638 | ||
9accd112 MM |
1639 | /* Handle qXfer:btrace:read. */ |
1640 | ||
1641 | static int | |
1642 | handle_qxfer_btrace (const char *annex, | |
1643 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1644 | ULONGEST offset, LONGEST len) | |
1645 | { | |
1646 | static struct buffer cache; | |
1647 | struct thread_info *thread; | |
add67df8 PA |
1648 | enum btrace_read_type type; |
1649 | int result; | |
9accd112 MM |
1650 | |
1651 | if (the_target->read_btrace == NULL || writebuf != NULL) | |
1652 | return -2; | |
1653 | ||
9accd112 MM |
1654 | if (ptid_equal (general_thread, null_ptid) |
1655 | || ptid_equal (general_thread, minus_one_ptid)) | |
1656 | { | |
1657 | strcpy (own_buf, "E.Must select a single thread."); | |
1658 | return -3; | |
1659 | } | |
1660 | ||
1661 | thread = find_thread_ptid (general_thread); | |
1662 | if (thread == NULL) | |
1663 | { | |
1664 | strcpy (own_buf, "E.No such thread."); | |
1665 | return -3; | |
1666 | } | |
1667 | ||
1668 | if (thread->btrace == NULL) | |
1669 | { | |
1670 | strcpy (own_buf, "E.Btrace not enabled."); | |
1671 | return -3; | |
1672 | } | |
1673 | ||
1674 | if (strcmp (annex, "all") == 0) | |
864089d2 | 1675 | type = BTRACE_READ_ALL; |
9accd112 | 1676 | else if (strcmp (annex, "new") == 0) |
864089d2 | 1677 | type = BTRACE_READ_NEW; |
969c39fb MM |
1678 | else if (strcmp (annex, "delta") == 0) |
1679 | type = BTRACE_READ_DELTA; | |
9accd112 MM |
1680 | else |
1681 | { | |
1682 | strcpy (own_buf, "E.Bad annex."); | |
1683 | return -3; | |
1684 | } | |
1685 | ||
1686 | if (offset == 0) | |
1687 | { | |
1688 | buffer_free (&cache); | |
1689 | ||
969c39fb MM |
1690 | result = target_read_btrace (thread->btrace, &cache, type); |
1691 | if (result != 0) | |
1692 | { | |
1693 | memcpy (own_buf, cache.buffer, cache.used_size); | |
1694 | return -3; | |
1695 | } | |
9accd112 MM |
1696 | } |
1697 | else if (offset > cache.used_size) | |
1698 | { | |
1699 | buffer_free (&cache); | |
1700 | return -3; | |
1701 | } | |
1702 | ||
1703 | if (len > cache.used_size - offset) | |
1704 | len = cache.used_size - offset; | |
1705 | ||
1706 | memcpy (readbuf, cache.buffer + offset, len); | |
1707 | ||
1708 | return len; | |
1709 | } | |
1710 | ||
f4abbc16 MM |
1711 | /* Handle qXfer:btrace-conf:read. */ |
1712 | ||
1713 | static int | |
1714 | handle_qxfer_btrace_conf (const char *annex, | |
1715 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1716 | ULONGEST offset, LONGEST len) | |
1717 | { | |
1718 | static struct buffer cache; | |
1719 | struct thread_info *thread; | |
1720 | int result; | |
1721 | ||
1722 | if (the_target->read_btrace_conf == NULL || writebuf != NULL) | |
1723 | return -2; | |
1724 | ||
f0db101d | 1725 | if (annex[0] != '\0') |
f4abbc16 MM |
1726 | return -1; |
1727 | ||
1728 | if (ptid_equal (general_thread, null_ptid) | |
1729 | || ptid_equal (general_thread, minus_one_ptid)) | |
1730 | { | |
1731 | strcpy (own_buf, "E.Must select a single thread."); | |
1732 | return -3; | |
1733 | } | |
1734 | ||
1735 | thread = find_thread_ptid (general_thread); | |
1736 | if (thread == NULL) | |
1737 | { | |
1738 | strcpy (own_buf, "E.No such thread."); | |
1739 | return -3; | |
1740 | } | |
1741 | ||
1742 | if (thread->btrace == NULL) | |
1743 | { | |
1744 | strcpy (own_buf, "E.Btrace not enabled."); | |
1745 | return -3; | |
1746 | } | |
1747 | ||
1748 | if (offset == 0) | |
1749 | { | |
1750 | buffer_free (&cache); | |
1751 | ||
1752 | result = target_read_btrace_conf (thread->btrace, &cache); | |
1753 | if (result != 0) | |
1754 | { | |
1755 | memcpy (own_buf, cache.buffer, cache.used_size); | |
1756 | return -3; | |
1757 | } | |
1758 | } | |
1759 | else if (offset > cache.used_size) | |
1760 | { | |
1761 | buffer_free (&cache); | |
1762 | return -3; | |
1763 | } | |
1764 | ||
1765 | if (len > cache.used_size - offset) | |
1766 | len = cache.used_size - offset; | |
1767 | ||
1768 | memcpy (readbuf, cache.buffer + offset, len); | |
1769 | ||
1770 | return len; | |
1771 | } | |
1772 | ||
d08aafef PA |
1773 | static const struct qxfer qxfer_packets[] = |
1774 | { | |
1775 | { "auxv", handle_qxfer_auxv }, | |
9accd112 | 1776 | { "btrace", handle_qxfer_btrace }, |
f4abbc16 | 1777 | { "btrace-conf", handle_qxfer_btrace_conf }, |
e57f1de3 | 1778 | { "exec-file", handle_qxfer_exec_file}, |
78d85199 | 1779 | { "fdpic", handle_qxfer_fdpic}, |
d08aafef PA |
1780 | { "features", handle_qxfer_features }, |
1781 | { "libraries", handle_qxfer_libraries }, | |
2268b414 | 1782 | { "libraries-svr4", handle_qxfer_libraries_svr4 }, |
d08aafef PA |
1783 | { "osdata", handle_qxfer_osdata }, |
1784 | { "siginfo", handle_qxfer_siginfo }, | |
1785 | { "spu", handle_qxfer_spu }, | |
1786 | { "statictrace", handle_qxfer_statictrace }, | |
1787 | { "threads", handle_qxfer_threads }, | |
b3b9301e | 1788 | { "traceframe-info", handle_qxfer_traceframe_info }, |
d08aafef PA |
1789 | }; |
1790 | ||
1791 | static int | |
1792 | handle_qxfer (char *own_buf, int packet_len, int *new_packet_len_p) | |
1793 | { | |
1794 | int i; | |
1795 | char *object; | |
1796 | char *rw; | |
1797 | char *annex; | |
1798 | char *offset; | |
1799 | ||
61012eef | 1800 | if (!startswith (own_buf, "qXfer:")) |
d08aafef PA |
1801 | return 0; |
1802 | ||
1803 | /* Grab the object, r/w and annex. */ | |
1804 | if (decode_xfer (own_buf + 6, &object, &rw, &annex, &offset) < 0) | |
1805 | { | |
1806 | write_enn (own_buf); | |
1807 | return 1; | |
1808 | } | |
1809 | ||
1810 | for (i = 0; | |
1811 | i < sizeof (qxfer_packets) / sizeof (qxfer_packets[0]); | |
1812 | i++) | |
1813 | { | |
1814 | const struct qxfer *q = &qxfer_packets[i]; | |
1815 | ||
1816 | if (strcmp (object, q->object) == 0) | |
1817 | { | |
1818 | if (strcmp (rw, "read") == 0) | |
1819 | { | |
1820 | unsigned char *data; | |
1821 | int n; | |
1822 | CORE_ADDR ofs; | |
1823 | unsigned int len; | |
1824 | ||
1825 | /* Grab the offset and length. */ | |
1826 | if (decode_xfer_read (offset, &ofs, &len) < 0) | |
1827 | { | |
1828 | write_enn (own_buf); | |
1829 | return 1; | |
1830 | } | |
1831 | ||
1832 | /* Read one extra byte, as an indicator of whether there is | |
1833 | more. */ | |
1834 | if (len > PBUFSIZ - 2) | |
1835 | len = PBUFSIZ - 2; | |
224c3ddb | 1836 | data = (unsigned char *) malloc (len + 1); |
d08aafef PA |
1837 | if (data == NULL) |
1838 | { | |
1839 | write_enn (own_buf); | |
1840 | return 1; | |
1841 | } | |
1842 | n = (*q->xfer) (annex, data, NULL, ofs, len + 1); | |
1843 | if (n == -2) | |
1844 | { | |
1845 | free (data); | |
1846 | return 0; | |
1847 | } | |
5cc22e4c MM |
1848 | else if (n == -3) |
1849 | { | |
1850 | /* Preserve error message. */ | |
1851 | } | |
d08aafef PA |
1852 | else if (n < 0) |
1853 | write_enn (own_buf); | |
1854 | else if (n > len) | |
1855 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); | |
1856 | else | |
1857 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); | |
1858 | ||
1859 | free (data); | |
1860 | return 1; | |
1861 | } | |
1862 | else if (strcmp (rw, "write") == 0) | |
1863 | { | |
1864 | int n; | |
1865 | unsigned int len; | |
1866 | CORE_ADDR ofs; | |
1867 | unsigned char *data; | |
1868 | ||
1869 | strcpy (own_buf, "E00"); | |
224c3ddb | 1870 | data = (unsigned char *) malloc (packet_len - (offset - own_buf)); |
d08aafef PA |
1871 | if (data == NULL) |
1872 | { | |
1873 | write_enn (own_buf); | |
1874 | return 1; | |
1875 | } | |
1876 | if (decode_xfer_write (offset, packet_len - (offset - own_buf), | |
1877 | &ofs, &len, data) < 0) | |
1878 | { | |
1879 | free (data); | |
1880 | write_enn (own_buf); | |
1881 | return 1; | |
1882 | } | |
1883 | ||
1884 | n = (*q->xfer) (annex, NULL, data, ofs, len); | |
1885 | if (n == -2) | |
1886 | { | |
1887 | free (data); | |
1888 | return 0; | |
1889 | } | |
5cc22e4c MM |
1890 | else if (n == -3) |
1891 | { | |
1892 | /* Preserve error message. */ | |
1893 | } | |
d08aafef PA |
1894 | else if (n < 0) |
1895 | write_enn (own_buf); | |
1896 | else | |
1897 | sprintf (own_buf, "%x", n); | |
dc146f7c | 1898 | |
d08aafef PA |
1899 | free (data); |
1900 | return 1; | |
1901 | } | |
dc146f7c | 1902 | |
d08aafef PA |
1903 | return 0; |
1904 | } | |
1905 | } | |
dc146f7c | 1906 | |
d08aafef | 1907 | return 0; |
dc146f7c VP |
1908 | } |
1909 | ||
30ba68cb MS |
1910 | /* Table used by the crc32 function to calcuate the checksum. */ |
1911 | ||
1912 | static unsigned int crc32_table[256] = | |
1913 | {0, 0}; | |
1914 | ||
1915 | /* Compute 32 bit CRC from inferior memory. | |
1916 | ||
1917 | On success, return 32 bit CRC. | |
1918 | On failure, return (unsigned long long) -1. */ | |
1919 | ||
1920 | static unsigned long long | |
1921 | crc32 (CORE_ADDR base, int len, unsigned int crc) | |
1922 | { | |
1923 | if (!crc32_table[1]) | |
1924 | { | |
1925 | /* Initialize the CRC table and the decoding table. */ | |
1926 | int i, j; | |
1927 | unsigned int c; | |
1928 | ||
1929 | for (i = 0; i < 256; i++) | |
1930 | { | |
1931 | for (c = i << 24, j = 8; j > 0; --j) | |
1932 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
1933 | crc32_table[i] = c; | |
1934 | } | |
1935 | } | |
1936 | ||
1937 | while (len--) | |
1938 | { | |
1939 | unsigned char byte = 0; | |
1940 | ||
1941 | /* Return failure if memory read fails. */ | |
1942 | if (read_inferior_memory (base, &byte, 1) != 0) | |
1943 | return (unsigned long long) -1; | |
1944 | ||
1945 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ byte) & 255]; | |
1946 | base++; | |
1947 | } | |
1948 | return (unsigned long long) crc; | |
1949 | } | |
1950 | ||
043c3577 MM |
1951 | /* Add supported btrace packets to BUF. */ |
1952 | ||
1953 | static void | |
1954 | supported_btrace_packets (char *buf) | |
1955 | { | |
b20a6524 MM |
1956 | int btrace_supported = 0; |
1957 | ||
043c3577 | 1958 | if (target_supports_btrace (BTRACE_FORMAT_BTS)) |
d33501a5 MM |
1959 | { |
1960 | strcat (buf, ";Qbtrace:bts+"); | |
1961 | strcat (buf, ";Qbtrace-conf:bts:size+"); | |
b20a6524 MM |
1962 | |
1963 | btrace_supported = 1; | |
d33501a5 | 1964 | } |
b20a6524 MM |
1965 | |
1966 | if (target_supports_btrace (BTRACE_FORMAT_PT)) | |
1967 | { | |
1968 | strcat (buf, ";Qbtrace:pt+"); | |
1969 | strcat (buf, ";Qbtrace-conf:pt:size+"); | |
1970 | ||
1971 | btrace_supported = 1; | |
1972 | } | |
1973 | ||
1974 | if (!btrace_supported) | |
043c3577 MM |
1975 | return; |
1976 | ||
1977 | strcat (buf, ";Qbtrace:off+"); | |
1978 | strcat (buf, ";qXfer:btrace:read+"); | |
f4abbc16 | 1979 | strcat (buf, ";qXfer:btrace-conf:read+"); |
043c3577 MM |
1980 | } |
1981 | ||
ce3a066d | 1982 | /* Handle all of the extended 'q' packets. */ |
d08aafef | 1983 | |
ce3a066d | 1984 | void |
0e7f50da | 1985 | handle_query (char *own_buf, int packet_len, int *new_packet_len_p) |
ce3a066d | 1986 | { |
0d62e5e8 DJ |
1987 | static struct inferior_list_entry *thread_ptr; |
1988 | ||
bb63802a | 1989 | /* Reply the current thread id. */ |
db42f210 | 1990 | if (strcmp ("qC", own_buf) == 0 && !disable_packet_qC) |
bb63802a | 1991 | { |
95954743 | 1992 | ptid_t gdb_id; |
2d717e4f | 1993 | require_running (own_buf); |
bd99dc85 | 1994 | |
95954743 PA |
1995 | if (!ptid_equal (general_thread, null_ptid) |
1996 | && !ptid_equal (general_thread, minus_one_ptid)) | |
bd99dc85 PA |
1997 | gdb_id = general_thread; |
1998 | else | |
1999 | { | |
649ebbca | 2000 | thread_ptr = get_first_inferior (&all_threads); |
bd99dc85 PA |
2001 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); |
2002 | } | |
2003 | ||
95954743 PA |
2004 | sprintf (own_buf, "QC"); |
2005 | own_buf += 2; | |
4b812f4e | 2006 | write_ptid (own_buf, gdb_id); |
bb63802a UW |
2007 | return; |
2008 | } | |
2009 | ||
ce3a066d DJ |
2010 | if (strcmp ("qSymbol::", own_buf) == 0) |
2011 | { | |
34c65914 PA |
2012 | struct thread_info *save_thread = current_thread; |
2013 | ||
2014 | /* For qSymbol, GDB only changes the current thread if the | |
2015 | previous current thread was of a different process. So if | |
2016 | the previous thread is gone, we need to pick another one of | |
2017 | the same process. This can happen e.g., if we followed an | |
2018 | exec in a non-leader thread. */ | |
2019 | if (current_thread == NULL) | |
2020 | { | |
2021 | current_thread | |
2022 | = find_any_thread_of_pid (ptid_get_pid (general_thread)); | |
2023 | ||
2024 | /* Just in case, if we didn't find a thread, then bail out | |
2025 | instead of crashing. */ | |
2026 | if (current_thread == NULL) | |
2027 | { | |
2028 | write_enn (own_buf); | |
2029 | current_thread = save_thread; | |
2030 | return; | |
2031 | } | |
2032 | } | |
2033 | ||
d3bbe7a0 PA |
2034 | /* GDB is suggesting new symbols have been loaded. This may |
2035 | mean a new shared library has been detected as loaded, so | |
2036 | take the opportunity to check if breakpoints we think are | |
2037 | inserted, still are. Note that it isn't guaranteed that | |
2038 | we'll see this when a shared library is loaded, and nor will | |
2039 | we see this for unloads (although breakpoints in unloaded | |
2040 | libraries shouldn't trigger), as GDB may not find symbols for | |
2041 | the library at all. We also re-validate breakpoints when we | |
2042 | see a second GDB breakpoint for the same address, and or when | |
2043 | we access breakpoint shadows. */ | |
2044 | validate_breakpoints (); | |
2045 | ||
fa593d66 PA |
2046 | if (target_supports_tracepoints ()) |
2047 | tracepoint_look_up_symbols (); | |
2048 | ||
f0db101d | 2049 | if (current_thread != NULL && the_target->look_up_symbols != NULL) |
2f2893d9 DJ |
2050 | (*the_target->look_up_symbols) (); |
2051 | ||
34c65914 PA |
2052 | current_thread = save_thread; |
2053 | ||
ce3a066d DJ |
2054 | strcpy (own_buf, "OK"); |
2055 | return; | |
2056 | } | |
2057 | ||
db42f210 | 2058 | if (!disable_packet_qfThreadInfo) |
0d62e5e8 | 2059 | { |
db42f210 | 2060 | if (strcmp ("qfThreadInfo", own_buf) == 0) |
0d62e5e8 | 2061 | { |
95954743 PA |
2062 | ptid_t gdb_id; |
2063 | ||
db42f210 | 2064 | require_running (own_buf); |
649ebbca | 2065 | thread_ptr = get_first_inferior (&all_threads); |
95954743 PA |
2066 | |
2067 | *own_buf++ = 'm'; | |
2068 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
2069 | write_ptid (own_buf, gdb_id); | |
0d62e5e8 DJ |
2070 | thread_ptr = thread_ptr->next; |
2071 | return; | |
2072 | } | |
db42f210 PA |
2073 | |
2074 | if (strcmp ("qsThreadInfo", own_buf) == 0) | |
0d62e5e8 | 2075 | { |
95954743 PA |
2076 | ptid_t gdb_id; |
2077 | ||
db42f210 PA |
2078 | require_running (own_buf); |
2079 | if (thread_ptr != NULL) | |
2080 | { | |
95954743 PA |
2081 | *own_buf++ = 'm'; |
2082 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
2083 | write_ptid (own_buf, gdb_id); | |
db42f210 PA |
2084 | thread_ptr = thread_ptr->next; |
2085 | return; | |
2086 | } | |
2087 | else | |
2088 | { | |
2089 | sprintf (own_buf, "l"); | |
2090 | return; | |
2091 | } | |
0d62e5e8 DJ |
2092 | } |
2093 | } | |
aa691b87 | 2094 | |
52fb6437 NS |
2095 | if (the_target->read_offsets != NULL |
2096 | && strcmp ("qOffsets", own_buf) == 0) | |
2097 | { | |
2098 | CORE_ADDR text, data; | |
2d717e4f DJ |
2099 | |
2100 | require_running (own_buf); | |
52fb6437 NS |
2101 | if (the_target->read_offsets (&text, &data)) |
2102 | sprintf (own_buf, "Text=%lX;Data=%lX;Bss=%lX", | |
2103 | (long)text, (long)data, (long)data); | |
2104 | else | |
2105 | write_enn (own_buf); | |
1b3f6016 | 2106 | |
52fb6437 NS |
2107 | return; |
2108 | } | |
2109 | ||
be2a5f71 | 2110 | /* Protocol features query. */ |
61012eef | 2111 | if (startswith (own_buf, "qSupported") |
be2a5f71 DJ |
2112 | && (own_buf[10] == ':' || own_buf[10] == '\0')) |
2113 | { | |
95954743 | 2114 | char *p = &own_buf[10]; |
fa593d66 | 2115 | int gdb_supports_qRelocInsn = 0; |
95954743 PA |
2116 | |
2117 | /* Process each feature being provided by GDB. The first | |
2118 | feature will follow a ':', and latter features will follow | |
2119 | ';'. */ | |
2120 | if (*p == ':') | |
d149dd1d PA |
2121 | { |
2122 | char **qsupported = NULL; | |
2123 | int count = 0; | |
06e03fff | 2124 | int unknown = 0; |
d149dd1d PA |
2125 | int i; |
2126 | ||
2127 | /* Two passes, to avoid nested strtok calls in | |
2128 | target_process_qsupported. */ | |
2129 | for (p = strtok (p + 1, ";"); | |
2130 | p != NULL; | |
2131 | p = strtok (NULL, ";")) | |
2132 | { | |
2133 | count++; | |
224c3ddb | 2134 | qsupported = XRESIZEVEC (char *, qsupported, count); |
d149dd1d PA |
2135 | qsupported[count - 1] = xstrdup (p); |
2136 | } | |
2137 | ||
2138 | for (i = 0; i < count; i++) | |
2139 | { | |
2140 | p = qsupported[i]; | |
2141 | if (strcmp (p, "multiprocess+") == 0) | |
2142 | { | |
2143 | /* GDB supports and wants multi-process support if | |
2144 | possible. */ | |
2145 | if (target_supports_multi_process ()) | |
2146 | multi_process = 1; | |
2147 | } | |
fa593d66 PA |
2148 | else if (strcmp (p, "qRelocInsn+") == 0) |
2149 | { | |
2150 | /* GDB supports relocate instruction requests. */ | |
2151 | gdb_supports_qRelocInsn = 1; | |
2152 | } | |
1ec68e26 PA |
2153 | else if (strcmp (p, "swbreak+") == 0) |
2154 | { | |
2155 | /* GDB wants us to report whether a trap is caused | |
2156 | by a software breakpoint and for us to handle PC | |
2157 | adjustment if necessary on this target. */ | |
2158 | if (target_supports_stopped_by_sw_breakpoint ()) | |
2159 | swbreak_feature = 1; | |
2160 | } | |
2161 | else if (strcmp (p, "hwbreak+") == 0) | |
2162 | { | |
2163 | /* GDB wants us to report whether a trap is caused | |
2164 | by a hardware breakpoint. */ | |
2165 | if (target_supports_stopped_by_hw_breakpoint ()) | |
2166 | hwbreak_feature = 1; | |
2167 | } | |
89245bc0 DB |
2168 | else if (strcmp (p, "fork-events+") == 0) |
2169 | { | |
2170 | /* GDB supports and wants fork events if possible. */ | |
2171 | if (target_supports_fork_events ()) | |
2172 | report_fork_events = 1; | |
2173 | } | |
2174 | else if (strcmp (p, "vfork-events+") == 0) | |
2175 | { | |
2176 | /* GDB supports and wants vfork events if possible. */ | |
2177 | if (target_supports_vfork_events ()) | |
2178 | report_vfork_events = 1; | |
2179 | } | |
7c5d0fad | 2180 | else if (strcmp (p, "exec-events+") == 0) |
94585166 DB |
2181 | { |
2182 | /* GDB supports and wants exec events if possible. */ | |
2183 | if (target_supports_exec_events ()) | |
2184 | report_exec_events = 1; | |
2185 | } | |
750ce8d1 YQ |
2186 | else if (strcmp (p, "vContSupported+") == 0) |
2187 | vCont_supported = 1; | |
65706a29 PA |
2188 | else if (strcmp (p, "QThreadEvents+") == 0) |
2189 | ; | |
d149dd1d | 2190 | else |
06e03fff PA |
2191 | { |
2192 | /* Move the unknown features all together. */ | |
2193 | qsupported[i] = NULL; | |
2194 | qsupported[unknown] = p; | |
2195 | unknown++; | |
2196 | } | |
d149dd1d PA |
2197 | } |
2198 | ||
06e03fff PA |
2199 | /* Give the target backend a chance to process the unknown |
2200 | features. */ | |
2201 | target_process_qsupported (qsupported, unknown); | |
2202 | ||
2203 | for (i = 0; i < count; i++) | |
2204 | free (qsupported[i]); | |
d149dd1d PA |
2205 | free (qsupported); |
2206 | } | |
95954743 | 2207 | |
9b224c5e PA |
2208 | sprintf (own_buf, |
2209 | "PacketSize=%x;QPassSignals+;QProgramSignals+", | |
2210 | PBUFSIZ - 1); | |
0876f84a | 2211 | |
2268b414 | 2212 | if (the_target->qxfer_libraries_svr4 != NULL) |
b1fbec62 GB |
2213 | strcat (own_buf, ";qXfer:libraries-svr4:read+" |
2214 | ";augmented-libraries-svr4-read+"); | |
2268b414 JK |
2215 | else |
2216 | { | |
2217 | /* We do not have any hook to indicate whether the non-SVR4 target | |
2218 | backend supports qXfer:libraries:read, so always report it. */ | |
2219 | strcat (own_buf, ";qXfer:libraries:read+"); | |
2220 | } | |
255e7678 | 2221 | |
0876f84a | 2222 | if (the_target->read_auxv != NULL) |
9f2e1e63 | 2223 | strcat (own_buf, ";qXfer:auxv:read+"); |
2d717e4f | 2224 | |
0e7f50da UW |
2225 | if (the_target->qxfer_spu != NULL) |
2226 | strcat (own_buf, ";qXfer:spu:read+;qXfer:spu:write+"); | |
0876f84a | 2227 | |
4aa995e1 PA |
2228 | if (the_target->qxfer_siginfo != NULL) |
2229 | strcat (own_buf, ";qXfer:siginfo:read+;qXfer:siginfo:write+"); | |
2230 | ||
78d85199 YQ |
2231 | if (the_target->read_loadmap != NULL) |
2232 | strcat (own_buf, ";qXfer:fdpic:read+"); | |
2233 | ||
221c031f UW |
2234 | /* We always report qXfer:features:read, as targets may |
2235 | install XML files on a subsequent call to arch_setup. | |
2236 | If we reported to GDB on startup that we don't support | |
2237 | qXfer:feature:read at all, we will never be re-queried. */ | |
2238 | strcat (own_buf, ";qXfer:features:read+"); | |
23181151 | 2239 | |
a6f3e723 SL |
2240 | if (transport_is_reliable) |
2241 | strcat (own_buf, ";QStartNoAckMode+"); | |
07e059b5 VP |
2242 | |
2243 | if (the_target->qxfer_osdata != NULL) | |
1b3f6016 | 2244 | strcat (own_buf, ";qXfer:osdata:read+"); |
07e059b5 | 2245 | |
cf8fd78b PA |
2246 | if (target_supports_multi_process ()) |
2247 | strcat (own_buf, ";multiprocess+"); | |
95954743 | 2248 | |
89245bc0 DB |
2249 | if (target_supports_fork_events ()) |
2250 | strcat (own_buf, ";fork-events+"); | |
2251 | ||
2252 | if (target_supports_vfork_events ()) | |
2253 | strcat (own_buf, ";vfork-events+"); | |
2254 | ||
94585166 DB |
2255 | if (target_supports_exec_events ()) |
2256 | strcat (own_buf, ";exec-events+"); | |
2257 | ||
bd99dc85 PA |
2258 | if (target_supports_non_stop ()) |
2259 | strcat (own_buf, ";QNonStop+"); | |
2260 | ||
03583c20 UW |
2261 | if (target_supports_disable_randomization ()) |
2262 | strcat (own_buf, ";QDisableRandomization+"); | |
2263 | ||
dc146f7c VP |
2264 | strcat (own_buf, ";qXfer:threads:read+"); |
2265 | ||
219f2f23 PA |
2266 | if (target_supports_tracepoints ()) |
2267 | { | |
2268 | strcat (own_buf, ";ConditionalTracepoints+"); | |
2269 | strcat (own_buf, ";TraceStateVariables+"); | |
2270 | strcat (own_buf, ";TracepointSource+"); | |
8336d594 | 2271 | strcat (own_buf, ";DisconnectedTracing+"); |
fa593d66 PA |
2272 | if (gdb_supports_qRelocInsn && target_supports_fast_tracepoints ()) |
2273 | strcat (own_buf, ";FastTracepoints+"); | |
0fb4aa4b | 2274 | strcat (own_buf, ";StaticTracepoints+"); |
1e4d1764 | 2275 | strcat (own_buf, ";InstallInTrace+"); |
0fb4aa4b | 2276 | strcat (own_buf, ";qXfer:statictrace:read+"); |
b3b9301e | 2277 | strcat (own_buf, ";qXfer:traceframe-info:read+"); |
d248b706 | 2278 | strcat (own_buf, ";EnableDisableTracepoints+"); |
f6f899bf | 2279 | strcat (own_buf, ";QTBuffer:size+"); |
3065dfb6 | 2280 | strcat (own_buf, ";tracenz+"); |
219f2f23 PA |
2281 | } |
2282 | ||
70b90b91 YQ |
2283 | if (target_supports_hardware_single_step ()) |
2284 | { | |
2285 | /* Support target-side breakpoint conditions and commands. | |
2286 | GDBserver needs to step over the breakpoint if the condition | |
2287 | is false. GDBserver software single step is too simple, so | |
2288 | disable conditional breakpoints if the target doesn't have | |
2289 | hardware single step. */ | |
2290 | strcat (own_buf, ";ConditionalBreakpoints+"); | |
2291 | } | |
d3ce09f5 | 2292 | strcat (own_buf, ";BreakpointCommands+"); |
9f3a5c85 | 2293 | |
d1feda86 YQ |
2294 | if (target_supports_agent ()) |
2295 | strcat (own_buf, ";QAgent+"); | |
2296 | ||
043c3577 | 2297 | supported_btrace_packets (own_buf); |
9accd112 | 2298 | |
1ec68e26 PA |
2299 | if (target_supports_stopped_by_sw_breakpoint ()) |
2300 | strcat (own_buf, ";swbreak+"); | |
2301 | ||
2302 | if (target_supports_stopped_by_hw_breakpoint ()) | |
2303 | strcat (own_buf, ";hwbreak+"); | |
2304 | ||
e57f1de3 GB |
2305 | if (the_target->pid_to_exec_file != NULL) |
2306 | strcat (own_buf, ";qXfer:exec-file:read+"); | |
2307 | ||
750ce8d1 YQ |
2308 | strcat (own_buf, ";vContSupported+"); |
2309 | ||
65706a29 PA |
2310 | strcat (own_buf, ";QThreadEvents+"); |
2311 | ||
14d2069a GB |
2312 | /* Reinitialize components as needed for the new connection. */ |
2313 | hostio_handle_new_gdb_connection (); | |
de0d863e DB |
2314 | target_handle_new_gdb_connection (); |
2315 | ||
be2a5f71 DJ |
2316 | return; |
2317 | } | |
2318 | ||
dae5f5cf DJ |
2319 | /* Thread-local storage support. */ |
2320 | if (the_target->get_tls_address != NULL | |
61012eef | 2321 | && startswith (own_buf, "qGetTLSAddr:")) |
dae5f5cf DJ |
2322 | { |
2323 | char *p = own_buf + 12; | |
5b1c542e | 2324 | CORE_ADDR parts[2], address = 0; |
dae5f5cf | 2325 | int i, err; |
95954743 | 2326 | ptid_t ptid = null_ptid; |
dae5f5cf | 2327 | |
2d717e4f DJ |
2328 | require_running (own_buf); |
2329 | ||
dae5f5cf DJ |
2330 | for (i = 0; i < 3; i++) |
2331 | { | |
2332 | char *p2; | |
2333 | int len; | |
2334 | ||
2335 | if (p == NULL) | |
2336 | break; | |
2337 | ||
2338 | p2 = strchr (p, ','); | |
2339 | if (p2) | |
2340 | { | |
2341 | len = p2 - p; | |
2342 | p2++; | |
2343 | } | |
2344 | else | |
2345 | { | |
2346 | len = strlen (p); | |
2347 | p2 = NULL; | |
2348 | } | |
2349 | ||
5b1c542e | 2350 | if (i == 0) |
95954743 | 2351 | ptid = read_ptid (p, NULL); |
5b1c542e PA |
2352 | else |
2353 | decode_address (&parts[i - 1], p, len); | |
dae5f5cf DJ |
2354 | p = p2; |
2355 | } | |
2356 | ||
2357 | if (p != NULL || i < 3) | |
2358 | err = 1; | |
2359 | else | |
2360 | { | |
e09875d4 | 2361 | struct thread_info *thread = find_thread_ptid (ptid); |
dae5f5cf DJ |
2362 | |
2363 | if (thread == NULL) | |
2364 | err = 2; | |
2365 | else | |
5b1c542e | 2366 | err = the_target->get_tls_address (thread, parts[0], parts[1], |
dae5f5cf DJ |
2367 | &address); |
2368 | } | |
2369 | ||
2370 | if (err == 0) | |
2371 | { | |
c6f46ca0 | 2372 | strcpy (own_buf, paddress(address)); |
dae5f5cf DJ |
2373 | return; |
2374 | } | |
2375 | else if (err > 0) | |
2376 | { | |
2377 | write_enn (own_buf); | |
2378 | return; | |
2379 | } | |
2380 | ||
2381 | /* Otherwise, pretend we do not understand this packet. */ | |
2382 | } | |
2383 | ||
711e434b PM |
2384 | /* Windows OS Thread Information Block address support. */ |
2385 | if (the_target->get_tib_address != NULL | |
61012eef | 2386 | && startswith (own_buf, "qGetTIBAddr:")) |
711e434b PM |
2387 | { |
2388 | char *annex; | |
2389 | int n; | |
2390 | CORE_ADDR tlb; | |
2391 | ptid_t ptid = read_ptid (own_buf + 12, &annex); | |
2392 | ||
2393 | n = (*the_target->get_tib_address) (ptid, &tlb); | |
2394 | if (n == 1) | |
2395 | { | |
c6f46ca0 | 2396 | strcpy (own_buf, paddress(tlb)); |
711e434b PM |
2397 | return; |
2398 | } | |
2399 | else if (n == 0) | |
2400 | { | |
2401 | write_enn (own_buf); | |
2402 | return; | |
2403 | } | |
2404 | return; | |
2405 | } | |
2406 | ||
c74d0ad8 | 2407 | /* Handle "monitor" commands. */ |
61012eef | 2408 | if (startswith (own_buf, "qRcmd,")) |
c74d0ad8 | 2409 | { |
224c3ddb | 2410 | char *mon = (char *) malloc (PBUFSIZ); |
c74d0ad8 DJ |
2411 | int len = strlen (own_buf + 6); |
2412 | ||
aef93bd7 DE |
2413 | if (mon == NULL) |
2414 | { | |
2415 | write_enn (own_buf); | |
2416 | return; | |
2417 | } | |
2418 | ||
ff0e980e TT |
2419 | if ((len % 2) != 0 |
2420 | || hex2bin (own_buf + 6, (gdb_byte *) mon, len / 2) != len / 2) | |
c74d0ad8 DJ |
2421 | { |
2422 | write_enn (own_buf); | |
2423 | free (mon); | |
2424 | return; | |
2425 | } | |
2426 | mon[len / 2] = '\0'; | |
2427 | ||
2428 | write_ok (own_buf); | |
2429 | ||
cdbfd419 PP |
2430 | if (the_target->handle_monitor_command == NULL |
2431 | || (*the_target->handle_monitor_command) (mon) == 0) | |
2432 | /* Default processing. */ | |
d73f2619 | 2433 | handle_monitor_command (mon, own_buf); |
c74d0ad8 DJ |
2434 | |
2435 | free (mon); | |
2436 | return; | |
2437 | } | |
2438 | ||
61012eef | 2439 | if (startswith (own_buf, "qSearch:memory:")) |
08388c79 DE |
2440 | { |
2441 | require_running (own_buf); | |
2442 | handle_search_memory (own_buf, packet_len); | |
2443 | return; | |
2444 | } | |
2445 | ||
95954743 | 2446 | if (strcmp (own_buf, "qAttached") == 0 |
61012eef | 2447 | || startswith (own_buf, "qAttached:")) |
0b16c5cf | 2448 | { |
95954743 PA |
2449 | struct process_info *process; |
2450 | ||
2451 | if (own_buf[sizeof ("qAttached") - 1]) | |
2452 | { | |
2453 | int pid = strtoul (own_buf + sizeof ("qAttached:") - 1, NULL, 16); | |
2454 | process = (struct process_info *) | |
2455 | find_inferior_id (&all_processes, pid_to_ptid (pid)); | |
2456 | } | |
2457 | else | |
2458 | { | |
2459 | require_running (own_buf); | |
2460 | process = current_process (); | |
2461 | } | |
2462 | ||
2463 | if (process == NULL) | |
2464 | { | |
2465 | write_enn (own_buf); | |
2466 | return; | |
2467 | } | |
2468 | ||
2469 | strcpy (own_buf, process->attached ? "1" : "0"); | |
0b16c5cf PA |
2470 | return; |
2471 | } | |
2472 | ||
61012eef | 2473 | if (startswith (own_buf, "qCRC:")) |
30ba68cb MS |
2474 | { |
2475 | /* CRC check (compare-section). */ | |
2476 | char *comma; | |
aca22551 | 2477 | ULONGEST base; |
30ba68cb MS |
2478 | int len; |
2479 | unsigned long long crc; | |
2480 | ||
2481 | require_running (own_buf); | |
aca22551 | 2482 | comma = unpack_varlen_hex (own_buf + 5, &base); |
30ba68cb MS |
2483 | if (*comma++ != ',') |
2484 | { | |
2485 | write_enn (own_buf); | |
2486 | return; | |
2487 | } | |
2488 | len = strtoul (comma, NULL, 16); | |
2489 | crc = crc32 (base, len, 0xffffffff); | |
2490 | /* Check for memory failure. */ | |
2491 | if (crc == (unsigned long long) -1) | |
2492 | { | |
2493 | write_enn (own_buf); | |
2494 | return; | |
2495 | } | |
2496 | sprintf (own_buf, "C%lx", (unsigned long) crc); | |
2497 | return; | |
2498 | } | |
2499 | ||
d08aafef PA |
2500 | if (handle_qxfer (own_buf, packet_len, new_packet_len_p)) |
2501 | return; | |
2502 | ||
219f2f23 PA |
2503 | if (target_supports_tracepoints () && handle_tracepoint_query (own_buf)) |
2504 | return; | |
2505 | ||
ce3a066d DJ |
2506 | /* Otherwise we didn't know what packet it was. Say we didn't |
2507 | understand it. */ | |
2508 | own_buf[0] = 0; | |
2509 | } | |
2510 | ||
ce1a5b52 | 2511 | static void gdb_wants_all_threads_stopped (void); |
b7ea362b PA |
2512 | static void resume (struct thread_resume *actions, size_t n); |
2513 | ||
649ebbca DE |
2514 | /* The callback that is passed to visit_actioned_threads. */ |
2515 | typedef int (visit_actioned_threads_callback_ftype) | |
2516 | (const struct thread_resume *, struct thread_info *); | |
2517 | ||
2518 | /* Struct to pass data to visit_actioned_threads. */ | |
2519 | ||
2520 | struct visit_actioned_threads_data | |
2521 | { | |
2522 | const struct thread_resume *actions; | |
2523 | size_t num_actions; | |
2524 | visit_actioned_threads_callback_ftype *callback; | |
2525 | }; | |
2526 | ||
b7ea362b PA |
2527 | /* Call CALLBACK for any thread to which ACTIONS applies to. Returns |
2528 | true if CALLBACK returns true. Returns false if no matching thread | |
649ebbca DE |
2529 | is found or CALLBACK results false. |
2530 | Note: This function is itself a callback for find_inferior. */ | |
b7ea362b PA |
2531 | |
2532 | static int | |
649ebbca | 2533 | visit_actioned_threads (struct inferior_list_entry *entry, void *datap) |
b7ea362b | 2534 | { |
9a3c8263 SM |
2535 | struct visit_actioned_threads_data *data |
2536 | = (struct visit_actioned_threads_data *) datap; | |
649ebbca DE |
2537 | const struct thread_resume *actions = data->actions; |
2538 | size_t num_actions = data->num_actions; | |
2539 | visit_actioned_threads_callback_ftype *callback = data->callback; | |
2540 | size_t i; | |
b7ea362b | 2541 | |
649ebbca | 2542 | for (i = 0; i < num_actions; i++) |
b7ea362b | 2543 | { |
649ebbca | 2544 | const struct thread_resume *action = &actions[i]; |
b7ea362b | 2545 | |
649ebbca DE |
2546 | if (ptid_equal (action->thread, minus_one_ptid) |
2547 | || ptid_equal (action->thread, entry->id) | |
2548 | || ((ptid_get_pid (action->thread) | |
2549 | == ptid_get_pid (entry->id)) | |
2550 | && ptid_get_lwp (action->thread) == -1)) | |
b7ea362b | 2551 | { |
649ebbca | 2552 | struct thread_info *thread = (struct thread_info *) entry; |
b7ea362b | 2553 | |
649ebbca DE |
2554 | if ((*callback) (action, thread)) |
2555 | return 1; | |
b7ea362b PA |
2556 | } |
2557 | } | |
2558 | ||
2559 | return 0; | |
2560 | } | |
2561 | ||
2562 | /* Callback for visit_actioned_threads. If the thread has a pending | |
2563 | status to report, report it now. */ | |
2564 | ||
2565 | static int | |
2566 | handle_pending_status (const struct thread_resume *resumption, | |
2567 | struct thread_info *thread) | |
2568 | { | |
2569 | if (thread->status_pending_p) | |
2570 | { | |
2571 | thread->status_pending_p = 0; | |
2572 | ||
2573 | last_status = thread->last_status; | |
2574 | last_ptid = thread->entry.id; | |
2575 | prepare_resume_reply (own_buf, last_ptid, &last_status); | |
2576 | return 1; | |
2577 | } | |
2578 | return 0; | |
2579 | } | |
ce1a5b52 | 2580 | |
64386c31 DJ |
2581 | /* Parse vCont packets. */ |
2582 | void | |
5b1c542e | 2583 | handle_v_cont (char *own_buf) |
64386c31 DJ |
2584 | { |
2585 | char *p, *q; | |
2586 | int n = 0, i = 0; | |
2bd7c093 | 2587 | struct thread_resume *resume_info; |
95954743 | 2588 | struct thread_resume default_action = {{0}}; |
64386c31 DJ |
2589 | |
2590 | /* Count the number of semicolons in the packet. There should be one | |
2591 | for every action. */ | |
2592 | p = &own_buf[5]; | |
2593 | while (p) | |
2594 | { | |
2595 | n++; | |
2596 | p++; | |
2597 | p = strchr (p, ';'); | |
2598 | } | |
2bd7c093 | 2599 | |
224c3ddb | 2600 | resume_info = (struct thread_resume *) malloc (n * sizeof (resume_info[0])); |
aef93bd7 DE |
2601 | if (resume_info == NULL) |
2602 | goto err; | |
64386c31 | 2603 | |
64386c31 | 2604 | p = &own_buf[5]; |
64386c31 DJ |
2605 | while (*p) |
2606 | { | |
2607 | p++; | |
2608 | ||
c2d6af84 PA |
2609 | memset (&resume_info[i], 0, sizeof resume_info[i]); |
2610 | ||
64386c31 | 2611 | if (p[0] == 's' || p[0] == 'S') |
bd99dc85 | 2612 | resume_info[i].kind = resume_step; |
c2d6af84 PA |
2613 | else if (p[0] == 'r') |
2614 | resume_info[i].kind = resume_step; | |
64386c31 | 2615 | else if (p[0] == 'c' || p[0] == 'C') |
bd99dc85 PA |
2616 | resume_info[i].kind = resume_continue; |
2617 | else if (p[0] == 't') | |
2618 | resume_info[i].kind = resume_stop; | |
64386c31 DJ |
2619 | else |
2620 | goto err; | |
2621 | ||
2622 | if (p[0] == 'S' || p[0] == 'C') | |
2623 | { | |
2624 | int sig; | |
2625 | sig = strtol (p + 1, &q, 16); | |
2626 | if (p == q) | |
2627 | goto err; | |
2628 | p = q; | |
2629 | ||
e053fbc4 | 2630 | if (!gdb_signal_to_host_p ((enum gdb_signal) sig)) |
64386c31 | 2631 | goto err; |
e053fbc4 | 2632 | resume_info[i].sig = gdb_signal_to_host ((enum gdb_signal) sig); |
64386c31 | 2633 | } |
c2d6af84 PA |
2634 | else if (p[0] == 'r') |
2635 | { | |
6740dc9c | 2636 | ULONGEST addr; |
c2d6af84 | 2637 | |
6740dc9c PA |
2638 | p = unpack_varlen_hex (p + 1, &addr); |
2639 | resume_info[i].step_range_start = addr; | |
c2d6af84 | 2640 | |
6740dc9c PA |
2641 | if (*p != ',') |
2642 | goto err; | |
c2d6af84 | 2643 | |
6740dc9c PA |
2644 | p = unpack_varlen_hex (p + 1, &addr); |
2645 | resume_info[i].step_range_end = addr; | |
c2d6af84 | 2646 | } |
64386c31 DJ |
2647 | else |
2648 | { | |
64386c31 DJ |
2649 | p = p + 1; |
2650 | } | |
2651 | ||
2652 | if (p[0] == 0) | |
2653 | { | |
95954743 | 2654 | resume_info[i].thread = minus_one_ptid; |
64386c31 DJ |
2655 | default_action = resume_info[i]; |
2656 | ||
2657 | /* Note: we don't increment i here, we'll overwrite this entry | |
2658 | the next time through. */ | |
2659 | } | |
2660 | else if (p[0] == ':') | |
2661 | { | |
95954743 | 2662 | ptid_t ptid = read_ptid (p + 1, &q); |
a06660f7 | 2663 | |
64386c31 DJ |
2664 | if (p == q) |
2665 | goto err; | |
2666 | p = q; | |
2667 | if (p[0] != ';' && p[0] != 0) | |
2668 | goto err; | |
2669 | ||
95954743 | 2670 | resume_info[i].thread = ptid; |
a06660f7 | 2671 | |
64386c31 DJ |
2672 | i++; |
2673 | } | |
2674 | } | |
2675 | ||
2bd7c093 PA |
2676 | if (i < n) |
2677 | resume_info[i] = default_action; | |
64386c31 | 2678 | |
b7ea362b PA |
2679 | resume (resume_info, n); |
2680 | free (resume_info); | |
2681 | return; | |
2682 | ||
2683 | err: | |
2684 | write_enn (own_buf); | |
2685 | free (resume_info); | |
2686 | return; | |
2687 | } | |
2688 | ||
2689 | /* Resume target with ACTIONS, an array of NUM_ACTIONS elements. */ | |
2690 | ||
2691 | static void | |
2692 | resume (struct thread_resume *actions, size_t num_actions) | |
2693 | { | |
bd99dc85 | 2694 | if (!non_stop) |
b7ea362b PA |
2695 | { |
2696 | /* Check if among the threads that GDB wants actioned, there's | |
2697 | one with a pending status to report. If so, skip actually | |
2698 | resuming/stopping and report the pending event | |
2699 | immediately. */ | |
649ebbca DE |
2700 | struct visit_actioned_threads_data data; |
2701 | ||
2702 | data.actions = actions; | |
2703 | data.num_actions = num_actions; | |
2704 | data.callback = handle_pending_status; | |
2705 | if (find_inferior (&all_threads, visit_actioned_threads, &data) != NULL) | |
b7ea362b | 2706 | return; |
bd99dc85 | 2707 | |
b7ea362b PA |
2708 | enable_async_io (); |
2709 | } | |
64386c31 | 2710 | |
b7ea362b | 2711 | (*the_target->resume) (actions, num_actions); |
64386c31 | 2712 | |
bd99dc85 PA |
2713 | if (non_stop) |
2714 | write_ok (own_buf); | |
2715 | else | |
2716 | { | |
95954743 | 2717 | last_ptid = mywait (minus_one_ptid, &last_status, 0, 1); |
ce1a5b52 | 2718 | |
fa96cb38 PA |
2719 | if (last_status.kind == TARGET_WAITKIND_NO_RESUMED) |
2720 | { | |
2721 | /* No proper RSP support for this yet. At least return | |
2722 | error. */ | |
2723 | sprintf (own_buf, "E.No unwaited-for children left."); | |
2724 | disable_async_io (); | |
2725 | return; | |
2726 | } | |
2727 | ||
d20a8ad9 | 2728 | if (last_status.kind != TARGET_WAITKIND_EXITED |
fa96cb38 PA |
2729 | && last_status.kind != TARGET_WAITKIND_SIGNALLED |
2730 | && last_status.kind != TARGET_WAITKIND_NO_RESUMED) | |
0bfdf32f | 2731 | current_thread->last_status = last_status; |
d20a8ad9 | 2732 | |
ce1a5b52 PA |
2733 | /* From the client's perspective, all-stop mode always stops all |
2734 | threads implicitly (and the target backend has already done | |
2735 | so by now). Tag all threads as "want-stopped", so we don't | |
2736 | resume them implicitly without the client telling us to. */ | |
2737 | gdb_wants_all_threads_stopped (); | |
bd99dc85 PA |
2738 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
2739 | disable_async_io (); | |
6bd31874 JB |
2740 | |
2741 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
2742 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2743 | mourn_inferior (find_process_pid (ptid_get_pid (last_ptid))); | |
bd99dc85 | 2744 | } |
64386c31 DJ |
2745 | } |
2746 | ||
2d717e4f DJ |
2747 | /* Attach to a new program. Return 1 if successful, 0 if failure. */ |
2748 | int | |
5b1c542e | 2749 | handle_v_attach (char *own_buf) |
2d717e4f DJ |
2750 | { |
2751 | int pid; | |
2752 | ||
2753 | pid = strtol (own_buf + 8, NULL, 16); | |
5b1c542e | 2754 | if (pid != 0 && attach_inferior (pid) == 0) |
2d717e4f | 2755 | { |
aeba519e PA |
2756 | /* Don't report shared library events after attaching, even if |
2757 | some libraries are preloaded. GDB will always poll the | |
2758 | library list. Avoids the "stopped by shared library event" | |
2759 | notice on the GDB side. */ | |
2760 | dlls_changed = 0; | |
bd99dc85 PA |
2761 | |
2762 | if (non_stop) | |
2763 | { | |
2764 | /* In non-stop, we don't send a resume reply. Stop events | |
2765 | will follow up using the normal notification | |
2766 | mechanism. */ | |
2767 | write_ok (own_buf); | |
2768 | } | |
2769 | else | |
2770 | prepare_resume_reply (own_buf, last_ptid, &last_status); | |
2771 | ||
2d717e4f DJ |
2772 | return 1; |
2773 | } | |
2774 | else | |
2775 | { | |
2776 | write_enn (own_buf); | |
2777 | return 0; | |
2778 | } | |
2779 | } | |
2780 | ||
2781 | /* Run a new program. Return 1 if successful, 0 if failure. */ | |
2782 | static int | |
5b1c542e | 2783 | handle_v_run (char *own_buf) |
2d717e4f | 2784 | { |
aef93bd7 | 2785 | char *p, *next_p, **new_argv; |
2d717e4f DJ |
2786 | int i, new_argc; |
2787 | ||
2788 | new_argc = 0; | |
2789 | for (p = own_buf + strlen ("vRun;"); p && *p; p = strchr (p, ';')) | |
2790 | { | |
2791 | p++; | |
2792 | new_argc++; | |
2793 | } | |
2794 | ||
224c3ddb | 2795 | new_argv = (char **) calloc (new_argc + 2, sizeof (char *)); |
aef93bd7 DE |
2796 | if (new_argv == NULL) |
2797 | { | |
2798 | write_enn (own_buf); | |
2799 | return 0; | |
2800 | } | |
2801 | ||
2d717e4f DJ |
2802 | i = 0; |
2803 | for (p = own_buf + strlen ("vRun;"); *p; p = next_p) | |
2804 | { | |
2805 | next_p = strchr (p, ';'); | |
2806 | if (next_p == NULL) | |
2807 | next_p = p + strlen (p); | |
2808 | ||
2809 | if (i == 0 && p == next_p) | |
2810 | new_argv[i] = NULL; | |
2811 | else | |
2812 | { | |
aef93bd7 | 2813 | /* FIXME: Fail request if out of memory instead of dying. */ |
224c3ddb | 2814 | new_argv[i] = (char *) xmalloc (1 + (next_p - p) / 2); |
ff0e980e | 2815 | hex2bin (p, (gdb_byte *) new_argv[i], (next_p - p) / 2); |
2d717e4f DJ |
2816 | new_argv[i][(next_p - p) / 2] = '\0'; |
2817 | } | |
2818 | ||
2819 | if (*next_p) | |
2820 | next_p++; | |
2821 | i++; | |
2822 | } | |
2823 | new_argv[i] = NULL; | |
2824 | ||
2825 | if (new_argv[0] == NULL) | |
2826 | { | |
f142445f DJ |
2827 | /* GDB didn't specify a program to run. Use the program from the |
2828 | last run with the new argument list. */ | |
9b710a42 | 2829 | |
2d717e4f DJ |
2830 | if (program_argv == NULL) |
2831 | { | |
2832 | write_enn (own_buf); | |
b2c04452 | 2833 | freeargv (new_argv); |
2d717e4f DJ |
2834 | return 0; |
2835 | } | |
2836 | ||
aef93bd7 DE |
2837 | new_argv[0] = strdup (program_argv[0]); |
2838 | if (new_argv[0] == NULL) | |
2839 | { | |
aef93bd7 | 2840 | write_enn (own_buf); |
b2c04452 | 2841 | freeargv (new_argv); |
aef93bd7 | 2842 | return 0; |
1b3f6016 | 2843 | } |
2d717e4f | 2844 | } |
f142445f | 2845 | |
aef93bd7 DE |
2846 | /* Free the old argv and install the new one. */ |
2847 | freeargv (program_argv); | |
f142445f | 2848 | program_argv = new_argv; |
2d717e4f | 2849 | |
5b1c542e PA |
2850 | start_inferior (program_argv); |
2851 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
2d717e4f | 2852 | { |
5b1c542e | 2853 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
bd99dc85 PA |
2854 | |
2855 | /* In non-stop, sending a resume reply doesn't set the general | |
2856 | thread, but GDB assumes a vRun sets it (this is so GDB can | |
2857 | query which is the main thread of the new inferior. */ | |
2858 | if (non_stop) | |
2859 | general_thread = last_ptid; | |
2860 | ||
2d717e4f DJ |
2861 | return 1; |
2862 | } | |
2863 | else | |
2864 | { | |
2865 | write_enn (own_buf); | |
2866 | return 0; | |
2867 | } | |
2868 | } | |
2869 | ||
95954743 PA |
2870 | /* Kill process. Return 1 if successful, 0 if failure. */ |
2871 | int | |
2872 | handle_v_kill (char *own_buf) | |
2873 | { | |
2874 | int pid; | |
2875 | char *p = &own_buf[6]; | |
0f54c268 PM |
2876 | if (multi_process) |
2877 | pid = strtol (p, NULL, 16); | |
2878 | else | |
2879 | pid = signal_pid; | |
95954743 PA |
2880 | if (pid != 0 && kill_inferior (pid) == 0) |
2881 | { | |
2882 | last_status.kind = TARGET_WAITKIND_SIGNALLED; | |
a493e3e2 | 2883 | last_status.value.sig = GDB_SIGNAL_KILL; |
95954743 | 2884 | last_ptid = pid_to_ptid (pid); |
465a859e | 2885 | discard_queued_stop_replies (last_ptid); |
95954743 PA |
2886 | write_ok (own_buf); |
2887 | return 1; | |
2888 | } | |
2889 | else | |
2890 | { | |
2891 | write_enn (own_buf); | |
2892 | return 0; | |
2893 | } | |
2894 | } | |
2895 | ||
64386c31 DJ |
2896 | /* Handle all of the extended 'v' packets. */ |
2897 | void | |
5b1c542e | 2898 | handle_v_requests (char *own_buf, int packet_len, int *new_packet_len) |
64386c31 | 2899 | { |
db42f210 | 2900 | if (!disable_packet_vCont) |
64386c31 | 2901 | { |
de979965 PA |
2902 | if (strcmp (own_buf, "vCtrlC") == 0) |
2903 | { | |
2904 | (*the_target->request_interrupt) (); | |
2905 | write_ok (own_buf); | |
2906 | return; | |
2907 | } | |
2908 | ||
61012eef | 2909 | if (startswith (own_buf, "vCont;")) |
db42f210 PA |
2910 | { |
2911 | require_running (own_buf); | |
5b1c542e | 2912 | handle_v_cont (own_buf); |
db42f210 PA |
2913 | return; |
2914 | } | |
64386c31 | 2915 | |
61012eef | 2916 | if (startswith (own_buf, "vCont?")) |
db42f210 | 2917 | { |
750ce8d1 YQ |
2918 | strcpy (own_buf, "vCont;c;C;t"); |
2919 | ||
2920 | if (target_supports_hardware_single_step () || !vCont_supported) | |
2921 | { | |
2922 | /* If target supports hardware single step, add actions s | |
2923 | and S to the list of supported actions. On the other | |
2924 | hand, if GDB doesn't request the supported vCont actions | |
2925 | in qSupported packet, add s and S to the list too. */ | |
2926 | own_buf = own_buf + strlen (own_buf); | |
2927 | strcpy (own_buf, ";s;S"); | |
2928 | } | |
2929 | ||
c2d6af84 PA |
2930 | if (target_supports_range_stepping ()) |
2931 | { | |
2932 | own_buf = own_buf + strlen (own_buf); | |
2933 | strcpy (own_buf, ";r"); | |
2934 | } | |
db42f210 PA |
2935 | return; |
2936 | } | |
64386c31 DJ |
2937 | } |
2938 | ||
61012eef | 2939 | if (startswith (own_buf, "vFile:") |
a6b151f1 DJ |
2940 | && handle_vFile (own_buf, packet_len, new_packet_len)) |
2941 | return; | |
2942 | ||
61012eef | 2943 | if (startswith (own_buf, "vAttach;")) |
2d717e4f | 2944 | { |
901f9912 | 2945 | if ((!extended_protocol || !multi_process) && target_running ()) |
2d717e4f | 2946 | { |
fd96d250 PA |
2947 | fprintf (stderr, "Already debugging a process\n"); |
2948 | write_enn (own_buf); | |
2949 | return; | |
2d717e4f | 2950 | } |
5b1c542e | 2951 | handle_v_attach (own_buf); |
2d717e4f DJ |
2952 | return; |
2953 | } | |
2954 | ||
61012eef | 2955 | if (startswith (own_buf, "vRun;")) |
2d717e4f | 2956 | { |
901f9912 | 2957 | if ((!extended_protocol || !multi_process) && target_running ()) |
2d717e4f | 2958 | { |
fd96d250 PA |
2959 | fprintf (stderr, "Already debugging a process\n"); |
2960 | write_enn (own_buf); | |
2961 | return; | |
2d717e4f | 2962 | } |
5b1c542e | 2963 | handle_v_run (own_buf); |
2d717e4f DJ |
2964 | return; |
2965 | } | |
2966 | ||
61012eef | 2967 | if (startswith (own_buf, "vKill;")) |
95954743 PA |
2968 | { |
2969 | if (!target_running ()) | |
2970 | { | |
2971 | fprintf (stderr, "No process to kill\n"); | |
2972 | write_enn (own_buf); | |
2973 | return; | |
2974 | } | |
2975 | handle_v_kill (own_buf); | |
2976 | return; | |
2977 | } | |
2978 | ||
14a00470 YQ |
2979 | if (handle_notif_ack (own_buf, packet_len)) |
2980 | return; | |
bd99dc85 | 2981 | |
64386c31 DJ |
2982 | /* Otherwise we didn't know what packet it was. Say we didn't |
2983 | understand it. */ | |
2984 | own_buf[0] = 0; | |
2985 | return; | |
2986 | } | |
2987 | ||
0bfdf32f | 2988 | /* Resume thread and wait for another event. In non-stop mode, |
bd99dc85 PA |
2989 | don't really wait here, but return immediatelly to the event |
2990 | loop. */ | |
1fd7cdc2 | 2991 | static void |
5b1c542e | 2992 | myresume (char *own_buf, int step, int sig) |
64386c31 DJ |
2993 | { |
2994 | struct thread_resume resume_info[2]; | |
2995 | int n = 0; | |
2bd7c093 | 2996 | int valid_cont_thread; |
a20d5e98 | 2997 | |
95954743 PA |
2998 | valid_cont_thread = (!ptid_equal (cont_thread, null_ptid) |
2999 | && !ptid_equal (cont_thread, minus_one_ptid)); | |
2bd7c093 PA |
3000 | |
3001 | if (step || sig || valid_cont_thread) | |
64386c31 | 3002 | { |
fbd5db48 | 3003 | resume_info[0].thread = current_ptid; |
bd99dc85 PA |
3004 | if (step) |
3005 | resume_info[0].kind = resume_step; | |
3006 | else | |
3007 | resume_info[0].kind = resume_continue; | |
64386c31 | 3008 | resume_info[0].sig = sig; |
64386c31 DJ |
3009 | n++; |
3010 | } | |
2bd7c093 PA |
3011 | |
3012 | if (!valid_cont_thread) | |
3013 | { | |
95954743 | 3014 | resume_info[n].thread = minus_one_ptid; |
bd99dc85 | 3015 | resume_info[n].kind = resume_continue; |
2bd7c093 PA |
3016 | resume_info[n].sig = 0; |
3017 | n++; | |
3018 | } | |
64386c31 | 3019 | |
b7ea362b | 3020 | resume (resume_info, n); |
bd99dc85 PA |
3021 | } |
3022 | ||
3023 | /* Callback for for_each_inferior. Make a new stop reply for each | |
3024 | stopped thread. */ | |
3025 | ||
95954743 PA |
3026 | static int |
3027 | queue_stop_reply_callback (struct inferior_list_entry *entry, void *arg) | |
bd99dc85 | 3028 | { |
8336d594 | 3029 | struct thread_info *thread = (struct thread_info *) entry; |
bd99dc85 | 3030 | |
8336d594 PA |
3031 | /* For now, assume targets that don't have this callback also don't |
3032 | manage the thread's last_status field. */ | |
3033 | if (the_target->thread_stopped == NULL) | |
95954743 | 3034 | { |
8d749320 | 3035 | struct vstop_notif *new_notif = XNEW (struct vstop_notif); |
14a00470 YQ |
3036 | |
3037 | new_notif->ptid = entry->id; | |
3038 | new_notif->status = thread->last_status; | |
8336d594 PA |
3039 | /* Pass the last stop reply back to GDB, but don't notify |
3040 | yet. */ | |
14a00470 YQ |
3041 | notif_event_enque (¬if_stop, |
3042 | (struct notif_event *) new_notif); | |
8336d594 PA |
3043 | } |
3044 | else | |
3045 | { | |
3046 | if (thread_stopped (thread)) | |
3047 | { | |
3048 | if (debug_threads) | |
3360c0bf LM |
3049 | { |
3050 | char *status_string | |
3051 | = target_waitstatus_to_string (&thread->last_status); | |
3052 | ||
87ce2a04 DE |
3053 | debug_printf ("Reporting thread %s as already stopped with %s\n", |
3054 | target_pid_to_str (entry->id), | |
3055 | status_string); | |
3360c0bf LM |
3056 | |
3057 | xfree (status_string); | |
3058 | } | |
8336d594 | 3059 | |
d20a8ad9 PA |
3060 | gdb_assert (thread->last_status.kind != TARGET_WAITKIND_IGNORE); |
3061 | ||
8336d594 PA |
3062 | /* Pass the last stop reply back to GDB, but don't notify |
3063 | yet. */ | |
3064 | queue_stop_reply (entry->id, &thread->last_status); | |
3065 | } | |
95954743 PA |
3066 | } |
3067 | ||
3068 | return 0; | |
64386c31 DJ |
3069 | } |
3070 | ||
ce1a5b52 PA |
3071 | /* Set this inferior threads's state as "want-stopped". We won't |
3072 | resume this thread until the client gives us another action for | |
3073 | it. */ | |
8336d594 PA |
3074 | |
3075 | static void | |
3076 | gdb_wants_thread_stopped (struct inferior_list_entry *entry) | |
3077 | { | |
3078 | struct thread_info *thread = (struct thread_info *) entry; | |
3079 | ||
3080 | thread->last_resume_kind = resume_stop; | |
3081 | ||
3082 | if (thread->last_status.kind == TARGET_WAITKIND_IGNORE) | |
3083 | { | |
ce1a5b52 PA |
3084 | /* Most threads are stopped implicitly (all-stop); tag that with |
3085 | signal 0. */ | |
8336d594 | 3086 | thread->last_status.kind = TARGET_WAITKIND_STOPPED; |
a493e3e2 | 3087 | thread->last_status.value.sig = GDB_SIGNAL_0; |
8336d594 PA |
3088 | } |
3089 | } | |
3090 | ||
3091 | /* Set all threads' states as "want-stopped". */ | |
3092 | ||
3093 | static void | |
3094 | gdb_wants_all_threads_stopped (void) | |
3095 | { | |
3096 | for_each_inferior (&all_threads, gdb_wants_thread_stopped); | |
3097 | } | |
3098 | ||
3099 | /* Clear the gdb_detached flag of every process. */ | |
3100 | ||
3101 | static void | |
3102 | gdb_reattached_process (struct inferior_list_entry *entry) | |
3103 | { | |
3104 | struct process_info *process = (struct process_info *) entry; | |
3105 | ||
3106 | process->gdb_detached = 0; | |
3107 | } | |
3108 | ||
b7ea362b PA |
3109 | /* Callback for for_each_inferior. Clear the thread's pending status |
3110 | flag. */ | |
3111 | ||
3112 | static void | |
3113 | clear_pending_status_callback (struct inferior_list_entry *entry) | |
3114 | { | |
3115 | struct thread_info *thread = (struct thread_info *) entry; | |
3116 | ||
3117 | thread->status_pending_p = 0; | |
3118 | } | |
3119 | ||
3120 | /* Callback for for_each_inferior. If the thread is stopped with an | |
3121 | interesting event, mark it as having a pending event. */ | |
3122 | ||
3123 | static void | |
3124 | set_pending_status_callback (struct inferior_list_entry *entry) | |
3125 | { | |
3126 | struct thread_info *thread = (struct thread_info *) entry; | |
3127 | ||
3128 | if (thread->last_status.kind != TARGET_WAITKIND_STOPPED | |
3129 | || (thread->last_status.value.sig != GDB_SIGNAL_0 | |
3130 | /* A breakpoint, watchpoint or finished step from a previous | |
3131 | GDB run isn't considered interesting for a new GDB run. | |
3132 | If we left those pending, the new GDB could consider them | |
3133 | random SIGTRAPs. This leaves out real async traps. We'd | |
3134 | have to peek into the (target-specific) siginfo to | |
3135 | distinguish those. */ | |
3136 | && thread->last_status.value.sig != GDB_SIGNAL_TRAP)) | |
3137 | thread->status_pending_p = 1; | |
3138 | } | |
3139 | ||
3140 | /* Callback for find_inferior. Return true if ENTRY (a thread) has a | |
3141 | pending status to report to GDB. */ | |
3142 | ||
3143 | static int | |
3144 | find_status_pending_thread_callback (struct inferior_list_entry *entry, void *data) | |
3145 | { | |
3146 | struct thread_info *thread = (struct thread_info *) entry; | |
3147 | ||
3148 | return thread->status_pending_p; | |
3149 | } | |
3150 | ||
5b1c542e PA |
3151 | /* Status handler for the '?' packet. */ |
3152 | ||
3153 | static void | |
3154 | handle_status (char *own_buf) | |
3155 | { | |
8336d594 PA |
3156 | /* GDB is connected, don't forward events to the target anymore. */ |
3157 | for_each_inferior (&all_processes, gdb_reattached_process); | |
bd99dc85 PA |
3158 | |
3159 | /* In non-stop mode, we must send a stop reply for each stopped | |
3160 | thread. In all-stop mode, just send one for the first stopped | |
3161 | thread we find. */ | |
3162 | ||
3163 | if (non_stop) | |
3164 | { | |
8336d594 | 3165 | find_inferior (&all_threads, queue_stop_reply_callback, NULL); |
bd99dc85 PA |
3166 | |
3167 | /* The first is sent immediatly. OK is sent if there is no | |
3168 | stopped thread, which is the same handling of the vStopped | |
3169 | packet (by design). */ | |
14a00470 | 3170 | notif_write_event (¬if_stop, own_buf); |
bd99dc85 | 3171 | } |
5b1c542e | 3172 | else |
bd99dc85 | 3173 | { |
b7ea362b PA |
3174 | struct inferior_list_entry *thread = NULL; |
3175 | ||
7984d532 | 3176 | pause_all (0); |
fa593d66 | 3177 | stabilize_threads (); |
8336d594 PA |
3178 | gdb_wants_all_threads_stopped (); |
3179 | ||
b7ea362b PA |
3180 | /* We can only report one status, but we might be coming out of |
3181 | non-stop -- if more than one thread is stopped with | |
3182 | interesting events, leave events for the threads we're not | |
3183 | reporting now pending. They'll be reported the next time the | |
3184 | threads are resumed. Start by marking all interesting events | |
3185 | as pending. */ | |
3186 | for_each_inferior (&all_threads, set_pending_status_callback); | |
3187 | ||
3188 | /* Prefer the last thread that reported an event to GDB (even if | |
3189 | that was a GDB_SIGNAL_TRAP). */ | |
3190 | if (last_status.kind != TARGET_WAITKIND_IGNORE | |
3191 | && last_status.kind != TARGET_WAITKIND_EXITED | |
3192 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
3193 | thread = find_inferior_id (&all_threads, last_ptid); | |
3194 | ||
3195 | /* If the last event thread is not found for some reason, look | |
3196 | for some other thread that might have an event to report. */ | |
3197 | if (thread == NULL) | |
3198 | thread = find_inferior (&all_threads, | |
3199 | find_status_pending_thread_callback, NULL); | |
3200 | ||
3201 | /* If we're still out of luck, simply pick the first thread in | |
3202 | the thread list. */ | |
3203 | if (thread == NULL) | |
649ebbca | 3204 | thread = get_first_inferior (&all_threads); |
b7ea362b PA |
3205 | |
3206 | if (thread != NULL) | |
8336d594 | 3207 | { |
b7ea362b PA |
3208 | struct thread_info *tp = (struct thread_info *) thread; |
3209 | ||
3210 | /* We're reporting this event, so it's no longer | |
3211 | pending. */ | |
3212 | tp->status_pending_p = 0; | |
3213 | ||
3214 | /* GDB assumes the current thread is the thread we're | |
3215 | reporting the status for. */ | |
3216 | general_thread = thread->id; | |
0bfdf32f | 3217 | set_desired_thread (1); |
8336d594 | 3218 | |
b7ea362b PA |
3219 | gdb_assert (tp->last_status.kind != TARGET_WAITKIND_IGNORE); |
3220 | prepare_resume_reply (own_buf, tp->entry.id, &tp->last_status); | |
8336d594 | 3221 | } |
bd99dc85 PA |
3222 | else |
3223 | strcpy (own_buf, "W00"); | |
3224 | } | |
5b1c542e PA |
3225 | } |
3226 | ||
dd24457d DJ |
3227 | static void |
3228 | gdbserver_version (void) | |
3229 | { | |
c16158bc | 3230 | printf ("GNU gdbserver %s%s\n" |
76f2b779 | 3231 | "Copyright (C) 2015 Free Software Foundation, Inc.\n" |
493e2a69 MS |
3232 | "gdbserver is free software, covered by the " |
3233 | "GNU General Public License.\n" | |
dd24457d | 3234 | "This gdbserver was configured as \"%s\"\n", |
c16158bc | 3235 | PKGVERSION, version, host_name); |
dd24457d DJ |
3236 | } |
3237 | ||
0bc68c49 | 3238 | static void |
c16158bc | 3239 | gdbserver_usage (FILE *stream) |
0bc68c49 | 3240 | { |
c16158bc JM |
3241 | fprintf (stream, "Usage:\tgdbserver [OPTIONS] COMM PROG [ARGS ...]\n" |
3242 | "\tgdbserver [OPTIONS] --attach COMM PID\n" | |
3243 | "\tgdbserver [OPTIONS] --multi COMM\n" | |
3244 | "\n" | |
41f98f02 PA |
3245 | "COMM may either be a tty device (for serial debugging),\n" |
3246 | "HOST:PORT to listen for a TCP connection, or '-' or 'stdio' to use \n" | |
3247 | "stdin/stdout of gdbserver.\n" | |
3248 | "PROG is the executable program. ARGS are arguments passed to inferior.\n" | |
3249 | "PID is the process ID to attach to, when --attach is specified.\n" | |
3250 | "\n" | |
3251 | "Operating modes:\n" | |
3252 | "\n" | |
3253 | " --attach Attach to running process PID.\n" | |
3254 | " --multi Start server without a specific program, and\n" | |
3255 | " only quit when explicitly commanded.\n" | |
3256 | " --once Exit after the first connection has closed.\n" | |
3257 | " --help Print this message and then exit.\n" | |
3258 | " --version Display version information and exit.\n" | |
3259 | "\n" | |
3260 | "Other options:\n" | |
3261 | "\n" | |
3262 | " --wrapper WRAPPER -- Run WRAPPER to start new programs.\n" | |
3263 | " --disable-randomization\n" | |
3264 | " Run PROG with address space randomization disabled.\n" | |
3265 | " --no-disable-randomization\n" | |
3266 | " Don't disable address space randomization when\n" | |
3267 | " starting PROG.\n" | |
3268 | "\n" | |
3269 | "Debug options:\n" | |
c16158bc | 3270 | "\n" |
62709adf | 3271 | " --debug Enable general debugging output.\n" |
87ce2a04 DE |
3272 | " --debug-format=opt1[,opt2,...]\n" |
3273 | " Specify extra content in debugging output.\n" | |
3274 | " Options:\n" | |
3275 | " all\n" | |
3276 | " none\n" | |
87ce2a04 | 3277 | " timestamp\n" |
62709adf | 3278 | " --remote-debug Enable remote protocol debugging output.\n" |
41f98f02 PA |
3279 | " --disable-packet=opt1[,opt2,...]\n" |
3280 | " Disable support for RSP packets or features.\n" | |
3281 | " Options:\n" | |
3282 | " vCont, Tthread, qC, qfThreadInfo and \n" | |
3283 | " threads (disable all threading packets).\n" | |
3284 | "\n" | |
3285 | "For more information, consult the GDB manual (available as on-line \n" | |
3286 | "info or a printed manual).\n"); | |
c16158bc JM |
3287 | if (REPORT_BUGS_TO[0] && stream == stdout) |
3288 | fprintf (stream, "Report bugs to \"%s\".\n", REPORT_BUGS_TO); | |
0bc68c49 DJ |
3289 | } |
3290 | ||
db42f210 PA |
3291 | static void |
3292 | gdbserver_show_disableable (FILE *stream) | |
3293 | { | |
3294 | fprintf (stream, "Disableable packets:\n" | |
3295 | " vCont \tAll vCont packets\n" | |
3296 | " qC \tQuerying the current thread\n" | |
3297 | " qfThreadInfo\tThread listing\n" | |
493e2a69 MS |
3298 | " Tthread \tPassing the thread specifier in the " |
3299 | "T stop reply packet\n" | |
db42f210 PA |
3300 | " threads \tAll of the above\n"); |
3301 | } | |
3302 | ||
3303 | ||
2d717e4f DJ |
3304 | #undef require_running |
3305 | #define require_running(BUF) \ | |
3306 | if (!target_running ()) \ | |
3307 | { \ | |
3308 | write_enn (BUF); \ | |
3309 | break; \ | |
3310 | } | |
3311 | ||
95954743 PA |
3312 | static int |
3313 | first_thread_of (struct inferior_list_entry *entry, void *args) | |
3314 | { | |
3315 | int pid = * (int *) args; | |
3316 | ||
3317 | if (ptid_get_pid (entry->id) == pid) | |
3318 | return 1; | |
3319 | ||
3320 | return 0; | |
3321 | } | |
3322 | ||
3323 | static void | |
3324 | kill_inferior_callback (struct inferior_list_entry *entry) | |
3325 | { | |
3326 | struct process_info *process = (struct process_info *) entry; | |
80894984 | 3327 | int pid = ptid_get_pid (process->entry.id); |
95954743 PA |
3328 | |
3329 | kill_inferior (pid); | |
465a859e | 3330 | discard_queued_stop_replies (pid_to_ptid (pid)); |
95954743 PA |
3331 | } |
3332 | ||
9f767825 DE |
3333 | /* Callback for for_each_inferior to detach or kill the inferior, |
3334 | depending on whether we attached to it or not. | |
3335 | We inform the user whether we're detaching or killing the process | |
3336 | as this is only called when gdbserver is about to exit. */ | |
3337 | ||
95954743 PA |
3338 | static void |
3339 | detach_or_kill_inferior_callback (struct inferior_list_entry *entry) | |
3340 | { | |
3341 | struct process_info *process = (struct process_info *) entry; | |
80894984 | 3342 | int pid = ptid_get_pid (process->entry.id); |
95954743 PA |
3343 | |
3344 | if (process->attached) | |
3345 | detach_inferior (pid); | |
3346 | else | |
3347 | kill_inferior (pid); | |
3348 | ||
465a859e | 3349 | discard_queued_stop_replies (pid_to_ptid (pid)); |
95954743 PA |
3350 | } |
3351 | ||
9f767825 DE |
3352 | /* for_each_inferior callback for detach_or_kill_for_exit to print |
3353 | the pids of started inferiors. */ | |
3354 | ||
3355 | static void | |
3356 | print_started_pid (struct inferior_list_entry *entry) | |
3357 | { | |
3358 | struct process_info *process = (struct process_info *) entry; | |
3359 | ||
3360 | if (! process->attached) | |
3361 | { | |
80894984 | 3362 | int pid = ptid_get_pid (process->entry.id); |
9f767825 DE |
3363 | fprintf (stderr, " %d", pid); |
3364 | } | |
3365 | } | |
3366 | ||
3367 | /* for_each_inferior callback for detach_or_kill_for_exit to print | |
3368 | the pids of attached inferiors. */ | |
3369 | ||
3370 | static void | |
3371 | print_attached_pid (struct inferior_list_entry *entry) | |
3372 | { | |
3373 | struct process_info *process = (struct process_info *) entry; | |
3374 | ||
3375 | if (process->attached) | |
3376 | { | |
80894984 | 3377 | int pid = ptid_get_pid (process->entry.id); |
9f767825 DE |
3378 | fprintf (stderr, " %d", pid); |
3379 | } | |
3380 | } | |
3381 | ||
3382 | /* Call this when exiting gdbserver with possible inferiors that need | |
3383 | to be killed or detached from. */ | |
3384 | ||
3385 | static void | |
3386 | detach_or_kill_for_exit (void) | |
3387 | { | |
3388 | /* First print a list of the inferiors we will be killing/detaching. | |
3389 | This is to assist the user, for example, in case the inferior unexpectedly | |
3390 | dies after we exit: did we screw up or did the inferior exit on its own? | |
3391 | Having this info will save some head-scratching. */ | |
3392 | ||
3393 | if (have_started_inferiors_p ()) | |
3394 | { | |
3395 | fprintf (stderr, "Killing process(es):"); | |
3396 | for_each_inferior (&all_processes, print_started_pid); | |
3397 | fprintf (stderr, "\n"); | |
3398 | } | |
3399 | if (have_attached_inferiors_p ()) | |
3400 | { | |
3401 | fprintf (stderr, "Detaching process(es):"); | |
3402 | for_each_inferior (&all_processes, print_attached_pid); | |
3403 | fprintf (stderr, "\n"); | |
3404 | } | |
3405 | ||
3406 | /* Now we can kill or detach the inferiors. */ | |
3407 | ||
3408 | for_each_inferior (&all_processes, detach_or_kill_inferior_callback); | |
3409 | } | |
3410 | ||
860789c7 GB |
3411 | /* Value that will be passed to exit(3) when gdbserver exits. */ |
3412 | static int exit_code; | |
3413 | ||
3414 | /* Cleanup version of detach_or_kill_for_exit. */ | |
3415 | ||
3416 | static void | |
3417 | detach_or_kill_for_exit_cleanup (void *ignore) | |
3418 | { | |
860789c7 | 3419 | |
492d29ea | 3420 | TRY |
860789c7 GB |
3421 | { |
3422 | detach_or_kill_for_exit (); | |
3423 | } | |
3424 | ||
492d29ea | 3425 | CATCH (exception, RETURN_MASK_ALL) |
860789c7 GB |
3426 | { |
3427 | fflush (stdout); | |
3428 | fprintf (stderr, "Detach or kill failed: %s\n", exception.message); | |
3429 | exit_code = 1; | |
3430 | } | |
492d29ea | 3431 | END_CATCH |
860789c7 GB |
3432 | } |
3433 | ||
3434 | /* Main function. This is called by the real "main" function, | |
3435 | wrapped in a TRY_CATCH that handles any uncaught exceptions. */ | |
3436 | ||
3437 | static void ATTRIBUTE_NORETURN | |
3438 | captured_main (int argc, char *argv[]) | |
c906108c | 3439 | { |
0729219d DJ |
3440 | int bad_attach; |
3441 | int pid; | |
2d717e4f DJ |
3442 | char *arg_end, *port; |
3443 | char **next_arg = &argv[1]; | |
89dc0afd JK |
3444 | volatile int multi_mode = 0; |
3445 | volatile int attach = 0; | |
2d717e4f | 3446 | int was_running; |
c906108c | 3447 | |
2d717e4f | 3448 | while (*next_arg != NULL && **next_arg == '-') |
dd24457d | 3449 | { |
2d717e4f DJ |
3450 | if (strcmp (*next_arg, "--version") == 0) |
3451 | { | |
3452 | gdbserver_version (); | |
3453 | exit (0); | |
3454 | } | |
3455 | else if (strcmp (*next_arg, "--help") == 0) | |
3456 | { | |
c16158bc | 3457 | gdbserver_usage (stdout); |
2d717e4f DJ |
3458 | exit (0); |
3459 | } | |
3460 | else if (strcmp (*next_arg, "--attach") == 0) | |
3461 | attach = 1; | |
3462 | else if (strcmp (*next_arg, "--multi") == 0) | |
3463 | multi_mode = 1; | |
ccd213ac DJ |
3464 | else if (strcmp (*next_arg, "--wrapper") == 0) |
3465 | { | |
3466 | next_arg++; | |
3467 | ||
3468 | wrapper_argv = next_arg; | |
3469 | while (*next_arg != NULL && strcmp (*next_arg, "--") != 0) | |
3470 | next_arg++; | |
3471 | ||
3472 | if (next_arg == wrapper_argv || *next_arg == NULL) | |
3473 | { | |
c16158bc | 3474 | gdbserver_usage (stderr); |
ccd213ac DJ |
3475 | exit (1); |
3476 | } | |
3477 | ||
3478 | /* Consume the "--". */ | |
3479 | *next_arg = NULL; | |
3480 | } | |
2d717e4f DJ |
3481 | else if (strcmp (*next_arg, "--debug") == 0) |
3482 | debug_threads = 1; | |
61012eef | 3483 | else if (startswith (*next_arg, "--debug-format=")) |
87ce2a04 DE |
3484 | { |
3485 | char *error_msg | |
3486 | = parse_debug_format_options ((*next_arg) | |
3487 | + sizeof ("--debug-format=") - 1, 0); | |
3488 | ||
3489 | if (error_msg != NULL) | |
3490 | { | |
3491 | fprintf (stderr, "%s", error_msg); | |
3492 | exit (1); | |
3493 | } | |
3494 | } | |
62709adf PA |
3495 | else if (strcmp (*next_arg, "--remote-debug") == 0) |
3496 | remote_debug = 1; | |
db42f210 PA |
3497 | else if (strcmp (*next_arg, "--disable-packet") == 0) |
3498 | { | |
3499 | gdbserver_show_disableable (stdout); | |
3500 | exit (0); | |
3501 | } | |
61012eef | 3502 | else if (startswith (*next_arg, "--disable-packet=")) |
db42f210 PA |
3503 | { |
3504 | char *packets, *tok; | |
3505 | ||
3506 | packets = *next_arg += sizeof ("--disable-packet=") - 1; | |
3507 | for (tok = strtok (packets, ","); | |
3508 | tok != NULL; | |
3509 | tok = strtok (NULL, ",")) | |
3510 | { | |
3511 | if (strcmp ("vCont", tok) == 0) | |
3512 | disable_packet_vCont = 1; | |
3513 | else if (strcmp ("Tthread", tok) == 0) | |
3514 | disable_packet_Tthread = 1; | |
3515 | else if (strcmp ("qC", tok) == 0) | |
3516 | disable_packet_qC = 1; | |
3517 | else if (strcmp ("qfThreadInfo", tok) == 0) | |
3518 | disable_packet_qfThreadInfo = 1; | |
3519 | else if (strcmp ("threads", tok) == 0) | |
3520 | { | |
3521 | disable_packet_vCont = 1; | |
3522 | disable_packet_Tthread = 1; | |
3523 | disable_packet_qC = 1; | |
3524 | disable_packet_qfThreadInfo = 1; | |
3525 | } | |
3526 | else | |
3527 | { | |
3528 | fprintf (stderr, "Don't know how to disable \"%s\".\n\n", | |
3529 | tok); | |
3530 | gdbserver_show_disableable (stderr); | |
3531 | exit (1); | |
3532 | } | |
3533 | } | |
3534 | } | |
e0f9f062 DE |
3535 | else if (strcmp (*next_arg, "-") == 0) |
3536 | { | |
3537 | /* "-" specifies a stdio connection and is a form of port | |
3538 | specification. */ | |
3539 | *next_arg = STDIO_CONNECTION_NAME; | |
3540 | break; | |
3541 | } | |
03583c20 UW |
3542 | else if (strcmp (*next_arg, "--disable-randomization") == 0) |
3543 | disable_randomization = 1; | |
3544 | else if (strcmp (*next_arg, "--no-disable-randomization") == 0) | |
3545 | disable_randomization = 0; | |
03f2bd59 JK |
3546 | else if (strcmp (*next_arg, "--once") == 0) |
3547 | run_once = 1; | |
2d717e4f DJ |
3548 | else |
3549 | { | |
3550 | fprintf (stderr, "Unknown argument: %s\n", *next_arg); | |
3551 | exit (1); | |
3552 | } | |
dd24457d | 3553 | |
2d717e4f DJ |
3554 | next_arg++; |
3555 | continue; | |
dd24457d DJ |
3556 | } |
3557 | ||
2d717e4f DJ |
3558 | port = *next_arg; |
3559 | next_arg++; | |
3560 | if (port == NULL || (!attach && !multi_mode && *next_arg == NULL)) | |
3561 | { | |
c16158bc | 3562 | gdbserver_usage (stderr); |
2d717e4f DJ |
3563 | exit (1); |
3564 | } | |
3565 | ||
602e3198 JK |
3566 | /* Remember stdio descriptors. LISTEN_DESC must not be listed, it will be |
3567 | opened by remote_prepare. */ | |
3568 | notice_open_fds (); | |
3569 | ||
e0f9f062 DE |
3570 | /* We need to know whether the remote connection is stdio before |
3571 | starting the inferior. Inferiors created in this scenario have | |
3572 | stdin,stdout redirected. So do this here before we call | |
3573 | start_inferior. */ | |
3574 | remote_prepare (port); | |
3575 | ||
0729219d DJ |
3576 | bad_attach = 0; |
3577 | pid = 0; | |
2d717e4f DJ |
3578 | |
3579 | /* --attach used to come after PORT, so allow it there for | |
3580 | compatibility. */ | |
3581 | if (*next_arg != NULL && strcmp (*next_arg, "--attach") == 0) | |
45b7b345 | 3582 | { |
2d717e4f DJ |
3583 | attach = 1; |
3584 | next_arg++; | |
45b7b345 DJ |
3585 | } |
3586 | ||
2d717e4f DJ |
3587 | if (attach |
3588 | && (*next_arg == NULL | |
3589 | || (*next_arg)[0] == '\0' | |
3590 | || (pid = strtoul (*next_arg, &arg_end, 0)) == 0 | |
3591 | || *arg_end != '\0' | |
3592 | || next_arg[1] != NULL)) | |
3593 | bad_attach = 1; | |
3594 | ||
3595 | if (bad_attach) | |
dd24457d | 3596 | { |
c16158bc | 3597 | gdbserver_usage (stderr); |
dd24457d DJ |
3598 | exit (1); |
3599 | } | |
c906108c | 3600 | |
a20d5e98 | 3601 | initialize_async_io (); |
4ce44c66 | 3602 | initialize_low (); |
60f662b0 | 3603 | initialize_event_loop (); |
219f2f23 PA |
3604 | if (target_supports_tracepoints ()) |
3605 | initialize_tracepoint (); | |
465a859e | 3606 | initialize_notif (); |
4ce44c66 | 3607 | |
224c3ddb SM |
3608 | own_buf = (char *) xmalloc (PBUFSIZ + 1); |
3609 | mem_buf = (unsigned char *) xmalloc (PBUFSIZ); | |
0a30fbc4 | 3610 | |
2d717e4f | 3611 | if (pid == 0 && *next_arg != NULL) |
45b7b345 | 3612 | { |
2d717e4f DJ |
3613 | int i, n; |
3614 | ||
3615 | n = argc - (next_arg - argv); | |
224c3ddb | 3616 | program_argv = XNEWVEC (char *, n + 1); |
2d717e4f | 3617 | for (i = 0; i < n; i++) |
bca929d3 | 3618 | program_argv[i] = xstrdup (next_arg[i]); |
2d717e4f DJ |
3619 | program_argv[i] = NULL; |
3620 | ||
45b7b345 | 3621 | /* Wait till we are at first instruction in program. */ |
5b1c542e | 3622 | start_inferior (program_argv); |
c906108c | 3623 | |
c588c53c MS |
3624 | /* We are now (hopefully) stopped at the first instruction of |
3625 | the target process. This assumes that the target process was | |
3626 | successfully created. */ | |
45b7b345 | 3627 | } |
2d717e4f DJ |
3628 | else if (pid != 0) |
3629 | { | |
5b1c542e | 3630 | if (attach_inferior (pid) == -1) |
2d717e4f DJ |
3631 | error ("Attaching not supported on this target"); |
3632 | ||
3633 | /* Otherwise succeeded. */ | |
3634 | } | |
45b7b345 DJ |
3635 | else |
3636 | { | |
5b1c542e PA |
3637 | last_status.kind = TARGET_WAITKIND_EXITED; |
3638 | last_status.value.integer = 0; | |
95954743 | 3639 | last_ptid = minus_one_ptid; |
45b7b345 | 3640 | } |
860789c7 | 3641 | make_cleanup (detach_or_kill_for_exit_cleanup, NULL); |
c906108c | 3642 | |
311de423 PA |
3643 | /* Don't report shared library events on the initial connection, |
3644 | even if some libraries are preloaded. Avoids the "stopped by | |
3645 | shared library event" notice on gdb side. */ | |
3646 | dlls_changed = 0; | |
3647 | ||
5b1c542e PA |
3648 | if (last_status.kind == TARGET_WAITKIND_EXITED |
3649 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2d717e4f DJ |
3650 | was_running = 0; |
3651 | else | |
3652 | was_running = 1; | |
3653 | ||
3654 | if (!was_running && !multi_mode) | |
860789c7 | 3655 | error ("No program to debug"); |
c588c53c | 3656 | |
c906108c SS |
3657 | while (1) |
3658 | { | |
860789c7 | 3659 | |
a6f3e723 | 3660 | noack_mode = 0; |
95954743 | 3661 | multi_process = 0; |
89245bc0 DB |
3662 | report_fork_events = 0; |
3663 | report_vfork_events = 0; | |
94585166 | 3664 | report_exec_events = 0; |
8336d594 PA |
3665 | /* Be sure we're out of tfind mode. */ |
3666 | current_traceframe = -1; | |
40e91bc7 | 3667 | cont_thread = null_ptid; |
1ec68e26 PA |
3668 | swbreak_feature = 0; |
3669 | hwbreak_feature = 0; | |
750ce8d1 | 3670 | vCont_supported = 0; |
bd99dc85 | 3671 | |
2d717e4f | 3672 | remote_open (port); |
c906108c | 3673 | |
492d29ea | 3674 | TRY |
2d717e4f | 3675 | { |
860789c7 GB |
3676 | /* Wait for events. This will return when all event sources |
3677 | are removed from the event loop. */ | |
3678 | start_event_loop (); | |
2d717e4f | 3679 | |
860789c7 GB |
3680 | /* If an exit was requested (using the "monitor exit" |
3681 | command), terminate now. The only other way to get | |
3682 | here is for getpkt to fail; close the connection | |
3683 | and reopen it at the top of the loop. */ | |
bd99dc85 | 3684 | |
860789c7 GB |
3685 | if (exit_requested || run_once) |
3686 | throw_quit ("Quit"); | |
bd99dc85 | 3687 | |
860789c7 GB |
3688 | fprintf (stderr, |
3689 | "Remote side has terminated connection. " | |
3690 | "GDBserver will reopen the connection.\n"); | |
8336d594 | 3691 | |
860789c7 GB |
3692 | /* Get rid of any pending statuses. An eventual reconnection |
3693 | (by the same GDB instance or another) will refresh all its | |
3694 | state from scratch. */ | |
465a859e | 3695 | discard_queued_stop_replies (minus_one_ptid); |
860789c7 GB |
3696 | for_each_inferior (&all_threads, |
3697 | clear_pending_status_callback); | |
9939e131 | 3698 | |
860789c7 | 3699 | if (tracing) |
8336d594 | 3700 | { |
860789c7 | 3701 | if (disconnected_tracing) |
8336d594 | 3702 | { |
860789c7 GB |
3703 | /* Try to enable non-stop/async mode, so we we can |
3704 | both wait for an async socket accept, and handle | |
3705 | async target events simultaneously. There's also | |
3706 | no point either in having the target always stop | |
3707 | all threads, when we're going to pass signals | |
3708 | down without informing GDB. */ | |
3709 | if (!non_stop) | |
3710 | { | |
3711 | if (start_non_stop (1)) | |
3712 | non_stop = 1; | |
3713 | ||
3714 | /* Detaching implicitly resumes all threads; | |
3715 | simply disconnecting does not. */ | |
3716 | } | |
3717 | } | |
3718 | else | |
3719 | { | |
3720 | fprintf (stderr, | |
3721 | "Disconnected tracing disabled; " | |
3722 | "stopping trace run.\n"); | |
3723 | stop_tracing (); | |
8336d594 PA |
3724 | } |
3725 | } | |
860789c7 | 3726 | } |
492d29ea | 3727 | CATCH (exception, RETURN_MASK_ERROR) |
860789c7 | 3728 | { |
608a1e46 PA |
3729 | fflush (stdout); |
3730 | fprintf (stderr, "gdbserver: %s\n", exception.message); | |
3731 | ||
860789c7 | 3732 | if (response_needed) |
8336d594 | 3733 | { |
860789c7 GB |
3734 | write_enn (own_buf); |
3735 | putpkt (own_buf); | |
8336d594 | 3736 | } |
608a1e46 PA |
3737 | |
3738 | if (run_once) | |
3739 | throw_quit ("Quit"); | |
8336d594 | 3740 | } |
492d29ea | 3741 | END_CATCH |
bd99dc85 PA |
3742 | } |
3743 | } | |
01f9e8fa | 3744 | |
860789c7 GB |
3745 | /* Main function. */ |
3746 | ||
3747 | int | |
3748 | main (int argc, char *argv[]) | |
3749 | { | |
860789c7 | 3750 | |
492d29ea | 3751 | TRY |
860789c7 GB |
3752 | { |
3753 | captured_main (argc, argv); | |
3754 | } | |
492d29ea | 3755 | CATCH (exception, RETURN_MASK_ALL) |
860789c7 | 3756 | { |
492d29ea PA |
3757 | if (exception.reason == RETURN_ERROR) |
3758 | { | |
3759 | fflush (stdout); | |
3760 | fprintf (stderr, "%s\n", exception.message); | |
3761 | fprintf (stderr, "Exiting\n"); | |
3762 | exit_code = 1; | |
3763 | } | |
3764 | ||
3765 | exit (exit_code); | |
860789c7 | 3766 | } |
492d29ea | 3767 | END_CATCH |
860789c7 | 3768 | |
492d29ea | 3769 | gdb_assert_not_reached ("captured_main should never return"); |
860789c7 GB |
3770 | } |
3771 | ||
d708bcd1 PA |
3772 | /* Skip PACKET until the next semi-colon (or end of string). */ |
3773 | ||
3774 | static void | |
3775 | skip_to_semicolon (char **packet) | |
3776 | { | |
3777 | while (**packet != '\0' && **packet != ';') | |
3778 | (*packet)++; | |
3779 | } | |
3780 | ||
802e8e6d PA |
3781 | /* Process options coming from Z packets for a breakpoint. PACKET is |
3782 | the packet buffer. *PACKET is updated to point to the first char | |
3783 | after the last processed option. */ | |
9f3a5c85 LM |
3784 | |
3785 | static void | |
802e8e6d | 3786 | process_point_options (struct breakpoint *bp, char **packet) |
9f3a5c85 LM |
3787 | { |
3788 | char *dataptr = *packet; | |
d3ce09f5 | 3789 | int persist; |
9f3a5c85 LM |
3790 | |
3791 | /* Check if data has the correct format. */ | |
3792 | if (*dataptr != ';') | |
3793 | return; | |
3794 | ||
3795 | dataptr++; | |
3796 | ||
3797 | while (*dataptr) | |
3798 | { | |
d3ce09f5 SS |
3799 | if (*dataptr == ';') |
3800 | ++dataptr; | |
3801 | ||
3802 | if (*dataptr == 'X') | |
9f3a5c85 | 3803 | { |
d3ce09f5 | 3804 | /* Conditional expression. */ |
d171ca78 | 3805 | if (debug_threads) |
87ce2a04 | 3806 | debug_printf ("Found breakpoint condition.\n"); |
802e8e6d | 3807 | if (!add_breakpoint_condition (bp, &dataptr)) |
d708bcd1 | 3808 | skip_to_semicolon (&dataptr); |
d3ce09f5 | 3809 | } |
61012eef | 3810 | else if (startswith (dataptr, "cmds:")) |
d3ce09f5 SS |
3811 | { |
3812 | dataptr += strlen ("cmds:"); | |
3813 | if (debug_threads) | |
87ce2a04 | 3814 | debug_printf ("Found breakpoint commands %s.\n", dataptr); |
d3ce09f5 SS |
3815 | persist = (*dataptr == '1'); |
3816 | dataptr += 2; | |
802e8e6d | 3817 | if (add_breakpoint_commands (bp, &dataptr, persist)) |
d708bcd1 | 3818 | skip_to_semicolon (&dataptr); |
d3ce09f5 SS |
3819 | } |
3820 | else | |
3821 | { | |
d3ce09f5 SS |
3822 | fprintf (stderr, "Unknown token %c, ignoring.\n", |
3823 | *dataptr); | |
78a99e91 | 3824 | /* Skip tokens until we find one that we recognize. */ |
d708bcd1 | 3825 | skip_to_semicolon (&dataptr); |
9f3a5c85 | 3826 | } |
9f3a5c85 LM |
3827 | } |
3828 | *packet = dataptr; | |
3829 | } | |
3830 | ||
bd99dc85 PA |
3831 | /* Event loop callback that handles a serial event. The first byte in |
3832 | the serial buffer gets us here. We expect characters to arrive at | |
3833 | a brisk pace, so we read the rest of the packet with a blocking | |
3834 | getpkt call. */ | |
01f9e8fa | 3835 | |
8336d594 | 3836 | static int |
bd99dc85 PA |
3837 | process_serial_event (void) |
3838 | { | |
3839 | char ch; | |
3840 | int i = 0; | |
3841 | int signal; | |
3842 | unsigned int len; | |
764880b7 | 3843 | int res; |
bd99dc85 | 3844 | CORE_ADDR mem_addr; |
95954743 | 3845 | int pid; |
bd99dc85 PA |
3846 | unsigned char sig; |
3847 | int packet_len; | |
3848 | int new_packet_len = -1; | |
3849 | ||
3850 | /* Used to decide when gdbserver should exit in | |
3851 | multi-mode/remote. */ | |
3852 | static int have_ran = 0; | |
3853 | ||
3854 | if (!have_ran) | |
3855 | have_ran = target_running (); | |
3856 | ||
3857 | disable_async_io (); | |
3858 | ||
3859 | response_needed = 0; | |
3860 | packet_len = getpkt (own_buf); | |
3861 | if (packet_len <= 0) | |
3862 | { | |
bd99dc85 | 3863 | remote_close (); |
8336d594 PA |
3864 | /* Force an event loop break. */ |
3865 | return -1; | |
bd99dc85 PA |
3866 | } |
3867 | response_needed = 1; | |
3868 | ||
3869 | i = 0; | |
3870 | ch = own_buf[i++]; | |
3871 | switch (ch) | |
3872 | { | |
3873 | case 'q': | |
3874 | handle_query (own_buf, packet_len, &new_packet_len); | |
3875 | break; | |
3876 | case 'Q': | |
3877 | handle_general_set (own_buf); | |
3878 | break; | |
3879 | case 'D': | |
3880 | require_running (own_buf); | |
95954743 PA |
3881 | |
3882 | if (multi_process) | |
3883 | { | |
3884 | i++; /* skip ';' */ | |
3885 | pid = strtol (&own_buf[i], NULL, 16); | |
3886 | } | |
3887 | else | |
fbd5db48 | 3888 | pid = ptid_get_pid (current_ptid); |
95954743 | 3889 | |
d3ce09f5 | 3890 | if ((tracing && disconnected_tracing) || any_persistent_commands ()) |
8336d594 PA |
3891 | { |
3892 | struct thread_resume resume_info; | |
3893 | struct process_info *process = find_process_pid (pid); | |
3894 | ||
3895 | if (process == NULL) | |
3896 | { | |
3897 | write_enn (own_buf); | |
3898 | break; | |
3899 | } | |
3900 | ||
d3ce09f5 SS |
3901 | if (tracing && disconnected_tracing) |
3902 | fprintf (stderr, | |
3903 | "Disconnected tracing in effect, " | |
3904 | "leaving gdbserver attached to the process\n"); | |
3905 | ||
3906 | if (any_persistent_commands ()) | |
3907 | fprintf (stderr, | |
3908 | "Persistent commands are present, " | |
3909 | "leaving gdbserver attached to the process\n"); | |
8336d594 PA |
3910 | |
3911 | /* Make sure we're in non-stop/async mode, so we we can both | |
3912 | wait for an async socket accept, and handle async target | |
3913 | events simultaneously. There's also no point either in | |
3914 | having the target stop all threads, when we're going to | |
3915 | pass signals down without informing GDB. */ | |
3916 | if (!non_stop) | |
3917 | { | |
3918 | if (debug_threads) | |
87ce2a04 | 3919 | debug_printf ("Forcing non-stop mode\n"); |
8336d594 PA |
3920 | |
3921 | non_stop = 1; | |
3922 | start_non_stop (1); | |
3923 | } | |
3924 | ||
3925 | process->gdb_detached = 1; | |
3926 | ||
3927 | /* Detaching implicitly resumes all threads. */ | |
3928 | resume_info.thread = minus_one_ptid; | |
3929 | resume_info.kind = resume_continue; | |
3930 | resume_info.sig = 0; | |
3931 | (*the_target->resume) (&resume_info, 1); | |
3932 | ||
3933 | write_ok (own_buf); | |
3934 | break; /* from switch/case */ | |
3935 | } | |
3936 | ||
95954743 | 3937 | fprintf (stderr, "Detaching from process %d\n", pid); |
8336d594 | 3938 | stop_tracing (); |
95954743 | 3939 | if (detach_inferior (pid) != 0) |
bd99dc85 PA |
3940 | write_enn (own_buf); |
3941 | else | |
3942 | { | |
465a859e | 3943 | discard_queued_stop_replies (pid_to_ptid (pid)); |
bd99dc85 PA |
3944 | write_ok (own_buf); |
3945 | ||
3946 | if (extended_protocol) | |
c906108c | 3947 | { |
bd99dc85 PA |
3948 | /* Treat this like a normal program exit. */ |
3949 | last_status.kind = TARGET_WAITKIND_EXITED; | |
3950 | last_status.value.integer = 0; | |
95954743 | 3951 | last_ptid = pid_to_ptid (pid); |
2d717e4f | 3952 | |
0bfdf32f | 3953 | current_thread = NULL; |
bd99dc85 PA |
3954 | } |
3955 | else | |
3956 | { | |
3957 | putpkt (own_buf); | |
3958 | remote_close (); | |
3959 | ||
3960 | /* If we are attached, then we can exit. Otherwise, we | |
3961 | need to hang around doing nothing, until the child is | |
3962 | gone. */ | |
71f55dd8 | 3963 | join_inferior (pid); |
bd99dc85 PA |
3964 | exit (0); |
3965 | } | |
3966 | } | |
3967 | break; | |
3968 | case '!': | |
3969 | extended_protocol = 1; | |
3970 | write_ok (own_buf); | |
3971 | break; | |
3972 | case '?': | |
3973 | handle_status (own_buf); | |
3974 | break; | |
3975 | case 'H': | |
3976 | if (own_buf[1] == 'c' || own_buf[1] == 'g' || own_buf[1] == 's') | |
3977 | { | |
95954743 PA |
3978 | ptid_t gdb_id, thread_id; |
3979 | int pid; | |
bd99dc85 PA |
3980 | |
3981 | require_running (own_buf); | |
95954743 PA |
3982 | |
3983 | gdb_id = read_ptid (&own_buf[2], NULL); | |
3984 | ||
3985 | pid = ptid_get_pid (gdb_id); | |
3986 | ||
3987 | if (ptid_equal (gdb_id, null_ptid) | |
3988 | || ptid_equal (gdb_id, minus_one_ptid)) | |
3989 | thread_id = null_ptid; | |
3990 | else if (pid != 0 | |
3991 | && ptid_equal (pid_to_ptid (pid), | |
3992 | gdb_id)) | |
3993 | { | |
3994 | struct thread_info *thread = | |
3995 | (struct thread_info *) find_inferior (&all_threads, | |
3996 | first_thread_of, | |
3997 | &pid); | |
3998 | if (!thread) | |
3999 | { | |
4000 | write_enn (own_buf); | |
4001 | break; | |
4002 | } | |
4003 | ||
80894984 | 4004 | thread_id = thread->entry.id; |
95954743 | 4005 | } |
bd99dc85 PA |
4006 | else |
4007 | { | |
4008 | thread_id = gdb_id_to_thread_id (gdb_id); | |
95954743 | 4009 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 4010 | { |
a06660f7 | 4011 | write_enn (own_buf); |
c906108c SS |
4012 | break; |
4013 | } | |
c906108c SS |
4014 | } |
4015 | ||
bd99dc85 | 4016 | if (own_buf[1] == 'g') |
c906108c | 4017 | { |
95954743 | 4018 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 4019 | { |
bd99dc85 PA |
4020 | /* GDB is telling us to choose any thread. Check if |
4021 | the currently selected thread is still valid. If | |
4022 | it is not, select the first available. */ | |
4023 | struct thread_info *thread = | |
4024 | (struct thread_info *) find_inferior_id (&all_threads, | |
4025 | general_thread); | |
4026 | if (thread == NULL) | |
f0db101d PA |
4027 | thread = get_first_thread (); |
4028 | thread_id = thread->entry.id; | |
c906108c | 4029 | } |
bd99dc85 PA |
4030 | |
4031 | general_thread = thread_id; | |
0bfdf32f | 4032 | set_desired_thread (1); |
f0db101d | 4033 | gdb_assert (current_thread != NULL); |
c906108c | 4034 | } |
bd99dc85 PA |
4035 | else if (own_buf[1] == 'c') |
4036 | cont_thread = thread_id; | |
c906108c | 4037 | |
bd99dc85 PA |
4038 | write_ok (own_buf); |
4039 | } | |
4040 | else | |
4041 | { | |
4042 | /* Silently ignore it so that gdb can extend the protocol | |
4043 | without compatibility headaches. */ | |
4044 | own_buf[0] = '\0'; | |
2d717e4f | 4045 | } |
bd99dc85 PA |
4046 | break; |
4047 | case 'g': | |
219f2f23 PA |
4048 | require_running (own_buf); |
4049 | if (current_traceframe >= 0) | |
4050 | { | |
3aee8918 PA |
4051 | struct regcache *regcache |
4052 | = new_register_cache (current_target_desc ()); | |
219f2f23 PA |
4053 | |
4054 | if (fetch_traceframe_registers (current_traceframe, | |
4055 | regcache, -1) == 0) | |
4056 | registers_to_string (regcache, own_buf); | |
4057 | else | |
4058 | write_enn (own_buf); | |
4059 | free_register_cache (regcache); | |
4060 | } | |
4061 | else | |
4062 | { | |
4063 | struct regcache *regcache; | |
4064 | ||
f0db101d PA |
4065 | if (!set_desired_thread (1)) |
4066 | write_enn (own_buf); | |
4067 | else | |
4068 | { | |
4069 | regcache = get_thread_regcache (current_thread, 1); | |
4070 | registers_to_string (regcache, own_buf); | |
4071 | } | |
219f2f23 | 4072 | } |
bd99dc85 PA |
4073 | break; |
4074 | case 'G': | |
219f2f23 PA |
4075 | require_running (own_buf); |
4076 | if (current_traceframe >= 0) | |
4077 | write_enn (own_buf); | |
4078 | else | |
4079 | { | |
442ea881 PA |
4080 | struct regcache *regcache; |
4081 | ||
f0db101d PA |
4082 | if (!set_desired_thread (1)) |
4083 | write_enn (own_buf); | |
4084 | else | |
4085 | { | |
4086 | regcache = get_thread_regcache (current_thread, 1); | |
4087 | registers_from_string (regcache, &own_buf[1]); | |
4088 | write_ok (own_buf); | |
4089 | } | |
442ea881 | 4090 | } |
bd99dc85 PA |
4091 | break; |
4092 | case 'm': | |
4093 | require_running (own_buf); | |
4094 | decode_m_packet (&own_buf[1], &mem_addr, &len); | |
764880b7 PA |
4095 | res = gdb_read_memory (mem_addr, mem_buf, len); |
4096 | if (res < 0) | |
bd99dc85 | 4097 | write_enn (own_buf); |
764880b7 | 4098 | else |
e9371aff | 4099 | bin2hex (mem_buf, own_buf, res); |
bd99dc85 PA |
4100 | break; |
4101 | case 'M': | |
4102 | require_running (own_buf); | |
fa593d66 | 4103 | decode_M_packet (&own_buf[1], &mem_addr, &len, &mem_buf); |
90d74c30 | 4104 | if (gdb_write_memory (mem_addr, mem_buf, len) == 0) |
bd99dc85 PA |
4105 | write_ok (own_buf); |
4106 | else | |
4107 | write_enn (own_buf); | |
4108 | break; | |
4109 | case 'X': | |
4110 | require_running (own_buf); | |
4111 | if (decode_X_packet (&own_buf[1], packet_len - 1, | |
fa593d66 | 4112 | &mem_addr, &len, &mem_buf) < 0 |
90d74c30 | 4113 | || gdb_write_memory (mem_addr, mem_buf, len) != 0) |
bd99dc85 PA |
4114 | write_enn (own_buf); |
4115 | else | |
4116 | write_ok (own_buf); | |
4117 | break; | |
4118 | case 'C': | |
4119 | require_running (own_buf); | |
a7191e8b | 4120 | hex2bin (own_buf + 1, &sig, 1); |
e053fbc4 PA |
4121 | if (gdb_signal_to_host_p ((enum gdb_signal) sig)) |
4122 | signal = gdb_signal_to_host ((enum gdb_signal) sig); | |
bd99dc85 PA |
4123 | else |
4124 | signal = 0; | |
4125 | myresume (own_buf, 0, signal); | |
4126 | break; | |
4127 | case 'S': | |
4128 | require_running (own_buf); | |
a7191e8b | 4129 | hex2bin (own_buf + 1, &sig, 1); |
e053fbc4 PA |
4130 | if (gdb_signal_to_host_p ((enum gdb_signal) sig)) |
4131 | signal = gdb_signal_to_host ((enum gdb_signal) sig); | |
bd99dc85 PA |
4132 | else |
4133 | signal = 0; | |
4134 | myresume (own_buf, 1, signal); | |
4135 | break; | |
4136 | case 'c': | |
4137 | require_running (own_buf); | |
4138 | signal = 0; | |
4139 | myresume (own_buf, 0, signal); | |
4140 | break; | |
4141 | case 's': | |
4142 | require_running (own_buf); | |
4143 | signal = 0; | |
4144 | myresume (own_buf, 1, signal); | |
4145 | break; | |
c6314022 AR |
4146 | case 'Z': /* insert_ ... */ |
4147 | /* Fallthrough. */ | |
4148 | case 'z': /* remove_ ... */ | |
bd99dc85 | 4149 | { |
bd99dc85 | 4150 | char *dataptr; |
aca22551 | 4151 | ULONGEST addr; |
27165294 | 4152 | int kind; |
bd99dc85 | 4153 | char type = own_buf[1]; |
c6314022 | 4154 | int res; |
d993e290 | 4155 | const int insert = ch == 'Z'; |
aca22551 PA |
4156 | char *p = &own_buf[3]; |
4157 | ||
4158 | p = unpack_varlen_hex (p, &addr); | |
27165294 | 4159 | kind = strtol (p + 1, &dataptr, 16); |
c6314022 | 4160 | |
802e8e6d | 4161 | if (insert) |
d993e290 | 4162 | { |
802e8e6d PA |
4163 | struct breakpoint *bp; |
4164 | ||
27165294 | 4165 | bp = set_gdb_breakpoint (type, addr, kind, &res); |
802e8e6d | 4166 | if (bp != NULL) |
9f3a5c85 | 4167 | { |
802e8e6d PA |
4168 | res = 0; |
4169 | ||
4170 | /* GDB may have sent us a list of *point parameters to | |
4171 | be evaluated on the target's side. Read such list | |
4172 | here. If we already have a list of parameters, GDB | |
4173 | is telling us to drop that list and use this one | |
4174 | instead. */ | |
0a261ed8 | 4175 | clear_breakpoint_conditions_and_commands (bp); |
802e8e6d | 4176 | process_point_options (bp, &dataptr); |
9f3a5c85 | 4177 | } |
d993e290 | 4178 | } |
802e8e6d | 4179 | else |
27165294 | 4180 | res = delete_gdb_breakpoint (type, addr, kind); |
bd99dc85 | 4181 | |
c6314022 AR |
4182 | if (res == 0) |
4183 | write_ok (own_buf); | |
4184 | else if (res == 1) | |
4185 | /* Unsupported. */ | |
4186 | own_buf[0] = '\0'; | |
bd99dc85 | 4187 | else |
c6314022 | 4188 | write_enn (own_buf); |
bd99dc85 PA |
4189 | break; |
4190 | } | |
4191 | case 'k': | |
4192 | response_needed = 0; | |
4193 | if (!target_running ()) | |
95954743 PA |
4194 | /* The packet we received doesn't make sense - but we can't |
4195 | reply to it, either. */ | |
8336d594 | 4196 | return 0; |
c906108c | 4197 | |
95954743 PA |
4198 | fprintf (stderr, "Killing all inferiors\n"); |
4199 | for_each_inferior (&all_processes, kill_inferior_callback); | |
c906108c | 4200 | |
bd99dc85 PA |
4201 | /* When using the extended protocol, we wait with no program |
4202 | running. The traditional protocol will exit instead. */ | |
4203 | if (extended_protocol) | |
4204 | { | |
4205 | last_status.kind = TARGET_WAITKIND_EXITED; | |
a493e3e2 | 4206 | last_status.value.sig = GDB_SIGNAL_KILL; |
8336d594 | 4207 | return 0; |
bd99dc85 PA |
4208 | } |
4209 | else | |
8336d594 PA |
4210 | exit (0); |
4211 | ||
bd99dc85 PA |
4212 | case 'T': |
4213 | { | |
95954743 | 4214 | ptid_t gdb_id, thread_id; |
bd99dc85 PA |
4215 | |
4216 | require_running (own_buf); | |
95954743 PA |
4217 | |
4218 | gdb_id = read_ptid (&own_buf[1], NULL); | |
bd99dc85 | 4219 | thread_id = gdb_id_to_thread_id (gdb_id); |
95954743 | 4220 | if (ptid_equal (thread_id, null_ptid)) |
bd99dc85 PA |
4221 | { |
4222 | write_enn (own_buf); | |
4223 | break; | |
4224 | } | |
4225 | ||
4226 | if (mythread_alive (thread_id)) | |
4227 | write_ok (own_buf); | |
4228 | else | |
4229 | write_enn (own_buf); | |
4230 | } | |
4231 | break; | |
4232 | case 'R': | |
4233 | response_needed = 0; | |
4234 | ||
4235 | /* Restarting the inferior is only supported in the extended | |
4236 | protocol. */ | |
4237 | if (extended_protocol) | |
4238 | { | |
4239 | if (target_running ()) | |
95954743 PA |
4240 | for_each_inferior (&all_processes, |
4241 | kill_inferior_callback); | |
bd99dc85 PA |
4242 | fprintf (stderr, "GDBserver restarting\n"); |
4243 | ||
4244 | /* Wait till we are at 1st instruction in prog. */ | |
4245 | if (program_argv != NULL) | |
51aee833 YQ |
4246 | { |
4247 | start_inferior (program_argv); | |
4248 | if (last_status.kind == TARGET_WAITKIND_STOPPED) | |
4249 | { | |
4250 | /* Stopped at the first instruction of the target | |
4251 | process. */ | |
4252 | general_thread = last_ptid; | |
4253 | } | |
4254 | else | |
4255 | { | |
4256 | /* Something went wrong. */ | |
4257 | general_thread = null_ptid; | |
4258 | } | |
4259 | } | |
bd99dc85 PA |
4260 | else |
4261 | { | |
4262 | last_status.kind = TARGET_WAITKIND_EXITED; | |
a493e3e2 | 4263 | last_status.value.sig = GDB_SIGNAL_KILL; |
bd99dc85 | 4264 | } |
8336d594 | 4265 | return 0; |
c906108c SS |
4266 | } |
4267 | else | |
4268 | { | |
bd99dc85 PA |
4269 | /* It is a request we don't understand. Respond with an |
4270 | empty packet so that gdb knows that we don't support this | |
4271 | request. */ | |
4272 | own_buf[0] = '\0'; | |
4273 | break; | |
4274 | } | |
4275 | case 'v': | |
4276 | /* Extended (long) request. */ | |
4277 | handle_v_requests (own_buf, packet_len, &new_packet_len); | |
4278 | break; | |
4279 | ||
4280 | default: | |
4281 | /* It is a request we don't understand. Respond with an empty | |
4282 | packet so that gdb knows that we don't support this | |
4283 | request. */ | |
4284 | own_buf[0] = '\0'; | |
4285 | break; | |
4286 | } | |
4287 | ||
4288 | if (new_packet_len != -1) | |
4289 | putpkt_binary (own_buf, new_packet_len); | |
4290 | else | |
4291 | putpkt (own_buf); | |
4292 | ||
4293 | response_needed = 0; | |
4294 | ||
4295 | if (!extended_protocol && have_ran && !target_running ()) | |
4296 | { | |
4297 | /* In non-stop, defer exiting until GDB had a chance to query | |
4298 | the whole vStopped list (until it gets an OK). */ | |
14a00470 | 4299 | if (QUEUE_is_empty (notif_event_p, notif_stop.queue)) |
bd99dc85 | 4300 | { |
1a3d890b PA |
4301 | /* Be transparent when GDB is connected through stdio -- no |
4302 | need to spam GDB's console. */ | |
4303 | if (!remote_connection_is_stdio ()) | |
4304 | fprintf (stderr, "GDBserver exiting\n"); | |
c906108c | 4305 | remote_close (); |
bd99dc85 | 4306 | exit (0); |
c906108c SS |
4307 | } |
4308 | } | |
8336d594 PA |
4309 | |
4310 | if (exit_requested) | |
4311 | return -1; | |
4312 | ||
4313 | return 0; | |
c906108c | 4314 | } |
bd99dc85 PA |
4315 | |
4316 | /* Event-loop callback for serial events. */ | |
4317 | ||
8336d594 | 4318 | int |
bd99dc85 PA |
4319 | handle_serial_event (int err, gdb_client_data client_data) |
4320 | { | |
4321 | if (debug_threads) | |
87ce2a04 | 4322 | debug_printf ("handling possible serial event\n"); |
bd99dc85 PA |
4323 | |
4324 | /* Really handle it. */ | |
8336d594 PA |
4325 | if (process_serial_event () < 0) |
4326 | return -1; | |
bd99dc85 | 4327 | |
0bfdf32f | 4328 | /* Be sure to not change the selected thread behind GDB's back. |
bd99dc85 | 4329 | Important in the non-stop mode asynchronous protocol. */ |
0bfdf32f | 4330 | set_desired_thread (1); |
8336d594 PA |
4331 | |
4332 | return 0; | |
bd99dc85 PA |
4333 | } |
4334 | ||
4335 | /* Event-loop callback for target events. */ | |
4336 | ||
8336d594 | 4337 | int |
bd99dc85 PA |
4338 | handle_target_event (int err, gdb_client_data client_data) |
4339 | { | |
4340 | if (debug_threads) | |
87ce2a04 | 4341 | debug_printf ("handling possible target event\n"); |
bd99dc85 | 4342 | |
95954743 PA |
4343 | last_ptid = mywait (minus_one_ptid, &last_status, |
4344 | TARGET_WNOHANG, 1); | |
bd99dc85 | 4345 | |
fa96cb38 PA |
4346 | if (last_status.kind == TARGET_WAITKIND_NO_RESUMED) |
4347 | { | |
4348 | /* No RSP support for this yet. */ | |
4349 | } | |
4350 | else if (last_status.kind != TARGET_WAITKIND_IGNORE) | |
bd99dc85 | 4351 | { |
8336d594 PA |
4352 | int pid = ptid_get_pid (last_ptid); |
4353 | struct process_info *process = find_process_pid (pid); | |
4354 | int forward_event = !gdb_connected () || process->gdb_detached; | |
4355 | ||
4356 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
4357 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
f9e39928 PA |
4358 | { |
4359 | mark_breakpoints_out (process); | |
4360 | mourn_inferior (process); | |
4361 | } | |
65706a29 PA |
4362 | else if (last_status.kind == TARGET_WAITKIND_THREAD_EXITED) |
4363 | ; | |
ce1a5b52 | 4364 | else |
d20a8ad9 PA |
4365 | { |
4366 | /* We're reporting this thread as stopped. Update its | |
4367 | "want-stopped" state to what the client wants, until it | |
4368 | gets a new resume action. */ | |
0bfdf32f GB |
4369 | current_thread->last_resume_kind = resume_stop; |
4370 | current_thread->last_status = last_status; | |
d20a8ad9 | 4371 | } |
8336d594 PA |
4372 | |
4373 | if (forward_event) | |
4374 | { | |
4375 | if (!target_running ()) | |
4376 | { | |
4377 | /* The last process exited. We're done. */ | |
4378 | exit (0); | |
4379 | } | |
4380 | ||
65706a29 PA |
4381 | if (last_status.kind == TARGET_WAITKIND_EXITED |
4382 | || last_status.kind == TARGET_WAITKIND_SIGNALLED | |
4383 | || last_status.kind == TARGET_WAITKIND_THREAD_EXITED) | |
4384 | ; | |
4385 | else | |
8336d594 PA |
4386 | { |
4387 | /* A thread stopped with a signal, but gdb isn't | |
4388 | connected to handle it. Pass it down to the | |
4389 | inferior, as if it wasn't being traced. */ | |
4390 | struct thread_resume resume_info; | |
4391 | ||
4392 | if (debug_threads) | |
87ce2a04 DE |
4393 | debug_printf ("GDB not connected; forwarding event %d for" |
4394 | " [%s]\n", | |
4395 | (int) last_status.kind, | |
4396 | target_pid_to_str (last_ptid)); | |
8336d594 PA |
4397 | |
4398 | resume_info.thread = last_ptid; | |
4399 | resume_info.kind = resume_continue; | |
65706a29 PA |
4400 | if (last_status.kind == TARGET_WAITKIND_STOPPED) |
4401 | resume_info.sig = gdb_signal_to_host (last_status.value.sig); | |
4402 | else | |
4403 | resume_info.sig = 0; | |
8336d594 PA |
4404 | (*the_target->resume) (&resume_info, 1); |
4405 | } | |
8336d594 PA |
4406 | } |
4407 | else | |
4408 | { | |
8d749320 | 4409 | struct vstop_notif *vstop_notif = XNEW (struct vstop_notif); |
14a00470 YQ |
4410 | |
4411 | vstop_notif->status = last_status; | |
4412 | vstop_notif->ptid = last_ptid; | |
4413 | /* Push Stop notification. */ | |
4414 | notif_push (¬if_stop, | |
4415 | (struct notif_event *) vstop_notif); | |
8336d594 | 4416 | } |
bd99dc85 PA |
4417 | } |
4418 | ||
0bfdf32f | 4419 | /* Be sure to not change the selected thread behind GDB's back. |
bd99dc85 | 4420 | Important in the non-stop mode asynchronous protocol. */ |
0bfdf32f | 4421 | set_desired_thread (1); |
8336d594 PA |
4422 | |
4423 | return 0; | |
bd99dc85 | 4424 | } |