Commit | Line | Data |
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c906108c | 1 | /* Main code for remote server for GDB. |
61baf725 | 2 | Copyright (C) 1989-2017 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" |
f348d89a | 25 | #include "signals-state-save-restore.h" |
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" |
7c5ded6a | 38 | #include <vector> |
2090129c SDJ |
39 | #include "common-inferior.h" |
40 | #include "job-control.h" | |
41 | #include "environ.h" | |
42 | ||
6d580b63 YQ |
43 | #include "common/selftest.h" |
44 | ||
f8a4e119 SM |
45 | #define require_running_or_return(BUF) \ |
46 | if (!target_running ()) \ | |
47 | { \ | |
48 | write_enn (BUF); \ | |
49 | return; \ | |
50 | } | |
51 | ||
52 | #define require_running_or_break(BUF) \ | |
53 | if (!target_running ()) \ | |
54 | { \ | |
55 | write_enn (BUF); \ | |
56 | break; \ | |
57 | } | |
58 | ||
2090129c SDJ |
59 | /* The environment to pass to the inferior when creating it. */ |
60 | ||
9a6c7d9c | 61 | static gdb_environ our_environ; |
2090129c SDJ |
62 | |
63 | /* Start the inferior using a shell. */ | |
64 | ||
65 | /* We always try to start the inferior using a shell. */ | |
66 | ||
67 | int startup_with_shell = 1; | |
a9fa9f7d | 68 | |
122f36ef PA |
69 | /* The thread set with an `Hc' packet. `Hc' is deprecated in favor of |
70 | `vCont'. Note the multi-process extensions made `vCont' a | |
71 | requirement, so `Hc pPID.TID' is pretty much undefined. So | |
72 | CONT_THREAD can be null_ptid for no `Hc' thread, minus_one_ptid for | |
73 | resuming all threads of the process (again, `Hc' isn't used for | |
40e91bc7 | 74 | multi-process), or a specific thread ptid_t. */ |
95954743 | 75 | ptid_t cont_thread; |
122f36ef PA |
76 | |
77 | /* The thread set with an `Hg' packet. */ | |
95954743 | 78 | ptid_t general_thread; |
5b1c542e | 79 | |
0d62e5e8 DJ |
80 | int server_waiting; |
81 | ||
17b1509a | 82 | static int extended_protocol; |
2d717e4f DJ |
83 | static int response_needed; |
84 | static int exit_requested; | |
85 | ||
03f2bd59 JK |
86 | /* --once: Exit after the first connection has closed. */ |
87 | int run_once; | |
88 | ||
95954743 | 89 | int multi_process; |
89245bc0 DB |
90 | int report_fork_events; |
91 | int report_vfork_events; | |
94585166 | 92 | int report_exec_events; |
65706a29 | 93 | int report_thread_events; |
f2faf941 PA |
94 | |
95 | /* Whether to report TARGET_WAITKING_NO_RESUMED events. */ | |
96 | static int report_no_resumed; | |
97 | ||
bd99dc85 | 98 | int non_stop; |
1ec68e26 PA |
99 | int swbreak_feature; |
100 | int hwbreak_feature; | |
bd99dc85 | 101 | |
750ce8d1 YQ |
102 | /* True if the "vContSupported" feature is active. In that case, GDB |
103 | wants us to report whether single step is supported in the reply to | |
104 | "vCont?" packet. */ | |
105 | static int vCont_supported; | |
106 | ||
03583c20 UW |
107 | /* Whether we should attempt to disable the operating system's address |
108 | space randomization feature before starting an inferior. */ | |
109 | int disable_randomization = 1; | |
110 | ||
2090129c SDJ |
111 | static char *program_name = NULL; |
112 | static std::vector<char *> program_args; | |
113 | static std::string wrapper_argv; | |
2d717e4f | 114 | |
a493e3e2 PA |
115 | int pass_signals[GDB_SIGNAL_LAST]; |
116 | int program_signals[GDB_SIGNAL_LAST]; | |
9b224c5e | 117 | int program_signals_p; |
89be2091 | 118 | |
a9fa9f7d DJ |
119 | /* The PID of the originally created or attached inferior. Used to |
120 | send signals to the process when GDB sends us an asynchronous interrupt | |
121 | (user hitting Control-C in the client), and to wait for the child to exit | |
122 | when no longer debugging it. */ | |
123 | ||
a1928bad | 124 | unsigned long signal_pid; |
a9fa9f7d | 125 | |
ec56be1b PA |
126 | /* Set if you want to disable optional thread related packets support |
127 | in gdbserver, for the sake of testing GDB against stubs that don't | |
128 | support them. */ | |
129 | int disable_packet_vCont; | |
130 | int disable_packet_Tthread; | |
131 | int disable_packet_qC; | |
132 | int disable_packet_qfThreadInfo; | |
133 | ||
5b1c542e | 134 | /* Last status reported to GDB. */ |
2090129c SDJ |
135 | struct target_waitstatus last_status; |
136 | ptid_t last_ptid; | |
5b1c542e | 137 | |
28170b88 | 138 | char *own_buf; |
bd99dc85 PA |
139 | static unsigned char *mem_buf; |
140 | ||
14a00470 YQ |
141 | /* A sub-class of 'struct notif_event' for stop, holding information |
142 | relative to a single stop reply. We keep a queue of these to | |
143 | push to GDB in non-stop mode. */ | |
144 | ||
bd99dc85 PA |
145 | struct vstop_notif |
146 | { | |
14a00470 | 147 | struct notif_event base; |
bd99dc85 PA |
148 | |
149 | /* Thread or process that got the event. */ | |
95954743 | 150 | ptid_t ptid; |
bd99dc85 PA |
151 | |
152 | /* Event info. */ | |
153 | struct target_waitstatus status; | |
154 | }; | |
155 | ||
f4abbc16 MM |
156 | /* The current btrace configuration. This is gdbserver's mirror of GDB's |
157 | btrace configuration. */ | |
158 | static struct btrace_config current_btrace_conf; | |
159 | ||
14a00470 | 160 | DEFINE_QUEUE_P (notif_event_p); |
bd99dc85 PA |
161 | |
162 | /* Put a stop reply to the stop reply queue. */ | |
163 | ||
164 | static void | |
95954743 | 165 | queue_stop_reply (ptid_t ptid, struct target_waitstatus *status) |
bd99dc85 | 166 | { |
8d749320 | 167 | struct vstop_notif *new_notif = XNEW (struct vstop_notif); |
bd99dc85 | 168 | |
bd99dc85 PA |
169 | new_notif->ptid = ptid; |
170 | new_notif->status = *status; | |
171 | ||
14a00470 | 172 | notif_event_enque (¬if_stop, (struct notif_event *) new_notif); |
bd99dc85 PA |
173 | } |
174 | ||
14a00470 | 175 | static int |
465a859e PA |
176 | remove_all_on_match_ptid (QUEUE (notif_event_p) *q, |
177 | QUEUE_ITER (notif_event_p) *iter, | |
178 | struct notif_event *event, | |
179 | void *data) | |
bd99dc85 | 180 | { |
465a859e PA |
181 | ptid_t filter_ptid = *(ptid_t *) data; |
182 | struct vstop_notif *vstop_event = (struct vstop_notif *) event; | |
d20a8ad9 | 183 | |
465a859e | 184 | if (ptid_match (vstop_event->ptid, filter_ptid)) |
bd99dc85 | 185 | { |
14a00470 YQ |
186 | if (q->free_func != NULL) |
187 | q->free_func (event); | |
188 | ||
189 | QUEUE_remove_elem (notif_event_p, q, iter); | |
bd99dc85 | 190 | } |
14a00470 YQ |
191 | |
192 | return 1; | |
bd99dc85 PA |
193 | } |
194 | ||
465a859e | 195 | /* See server.h. */ |
bd99dc85 | 196 | |
465a859e PA |
197 | void |
198 | discard_queued_stop_replies (ptid_t ptid) | |
bd99dc85 | 199 | { |
14a00470 | 200 | QUEUE_iterate (notif_event_p, notif_stop.queue, |
465a859e | 201 | remove_all_on_match_ptid, &ptid); |
bd99dc85 PA |
202 | } |
203 | ||
bd99dc85 | 204 | static void |
14a00470 | 205 | vstop_notif_reply (struct notif_event *event, char *own_buf) |
bd99dc85 | 206 | { |
14a00470 YQ |
207 | struct vstop_notif *vstop = (struct vstop_notif *) event; |
208 | ||
209 | prepare_resume_reply (own_buf, vstop->ptid, &vstop->status); | |
bd99dc85 PA |
210 | } |
211 | ||
5a04c4cf PA |
212 | /* QUEUE_iterate callback helper for in_queued_stop_replies. */ |
213 | ||
214 | static int | |
215 | in_queued_stop_replies_ptid (QUEUE (notif_event_p) *q, | |
216 | QUEUE_ITER (notif_event_p) *iter, | |
217 | struct notif_event *event, | |
218 | void *data) | |
219 | { | |
220 | ptid_t filter_ptid = *(ptid_t *) data; | |
221 | struct vstop_notif *vstop_event = (struct vstop_notif *) event; | |
222 | ||
223 | if (ptid_match (vstop_event->ptid, filter_ptid)) | |
224 | return 0; | |
225 | ||
226 | /* Don't resume fork children that GDB does not know about yet. */ | |
227 | if ((vstop_event->status.kind == TARGET_WAITKIND_FORKED | |
228 | || vstop_event->status.kind == TARGET_WAITKIND_VFORKED) | |
229 | && ptid_match (vstop_event->status.value.related_pid, filter_ptid)) | |
230 | return 0; | |
231 | ||
232 | return 1; | |
233 | } | |
234 | ||
235 | /* See server.h. */ | |
236 | ||
237 | int | |
238 | in_queued_stop_replies (ptid_t ptid) | |
239 | { | |
240 | return !QUEUE_iterate (notif_event_p, notif_stop.queue, | |
241 | in_queued_stop_replies_ptid, &ptid); | |
242 | } | |
243 | ||
14a00470 YQ |
244 | struct notif_server notif_stop = |
245 | { | |
246 | "vStopped", "Stop", NULL, vstop_notif_reply, | |
247 | }; | |
248 | ||
2d717e4f DJ |
249 | static int |
250 | target_running (void) | |
251 | { | |
649ebbca | 252 | return get_first_thread () != NULL; |
2d717e4f DJ |
253 | } |
254 | ||
2090129c | 255 | /* See common/common-inferior.h. */ |
ccd213ac | 256 | |
2090129c SDJ |
257 | const char * |
258 | get_exec_wrapper () | |
259 | { | |
260 | return !wrapper_argv.empty () ? wrapper_argv.c_str () : NULL; | |
261 | } | |
eb97750b | 262 | |
2090129c | 263 | /* See common/common-inferior.h. */ |
eb97750b | 264 | |
2090129c SDJ |
265 | char * |
266 | get_exec_file (int err) | |
267 | { | |
268 | if (err && program_name == NULL) | |
269 | error (_("No executable file specified.")); | |
ccd213ac | 270 | |
2090129c SDJ |
271 | return program_name; |
272 | } | |
5b1c542e | 273 | |
2090129c | 274 | /* See server.h. */ |
d20a8ad9 | 275 | |
9a6c7d9c | 276 | gdb_environ * |
2090129c SDJ |
277 | get_environ () |
278 | { | |
9a6c7d9c | 279 | return &our_environ; |
c906108c SS |
280 | } |
281 | ||
45b7b345 | 282 | static int |
5b1c542e | 283 | attach_inferior (int pid) |
45b7b345 DJ |
284 | { |
285 | /* myattach should return -1 if attaching is unsupported, | |
286 | 0 if it succeeded, and call error() otherwise. */ | |
a9fa9f7d | 287 | |
45b7b345 DJ |
288 | if (myattach (pid) != 0) |
289 | return -1; | |
290 | ||
6910d122 | 291 | fprintf (stderr, "Attached; pid = %d\n", pid); |
b80864fb | 292 | fflush (stderr); |
6910d122 | 293 | |
a9fa9f7d DJ |
294 | /* FIXME - It may be that we should get the SIGNAL_PID from the |
295 | attach function, so that it can be the main thread instead of | |
296 | whichever we were told to attach to. */ | |
297 | signal_pid = pid; | |
298 | ||
bd99dc85 PA |
299 | if (!non_stop) |
300 | { | |
95954743 | 301 | last_ptid = mywait (pid_to_ptid (pid), &last_status, 0, 0); |
bd99dc85 PA |
302 | |
303 | /* GDB knows to ignore the first SIGSTOP after attaching to a running | |
304 | process using the "attach" command, but this is different; it's | |
305 | just using "target remote". Pretend it's just starting up. */ | |
306 | if (last_status.kind == TARGET_WAITKIND_STOPPED | |
a493e3e2 PA |
307 | && last_status.value.sig == GDB_SIGNAL_STOP) |
308 | last_status.value.sig = GDB_SIGNAL_TRAP; | |
d20a8ad9 | 309 | |
0bfdf32f GB |
310 | current_thread->last_resume_kind = resume_stop; |
311 | current_thread->last_status = last_status; | |
bd99dc85 | 312 | } |
9db87ebd | 313 | |
45b7b345 DJ |
314 | return 0; |
315 | } | |
316 | ||
c906108c | 317 | extern int remote_debug; |
ce3a066d | 318 | |
0876f84a DJ |
319 | /* Decode a qXfer read request. Return 0 if everything looks OK, |
320 | or -1 otherwise. */ | |
321 | ||
322 | static int | |
d08aafef | 323 | decode_xfer_read (char *buf, CORE_ADDR *ofs, unsigned int *len) |
0876f84a | 324 | { |
d08aafef PA |
325 | /* After the read marker and annex, qXfer looks like a |
326 | traditional 'm' packet. */ | |
327 | decode_m_packet (buf, ofs, len); | |
328 | ||
329 | return 0; | |
330 | } | |
331 | ||
332 | static int | |
333 | decode_xfer (char *buf, char **object, char **rw, char **annex, char **offset) | |
334 | { | |
335 | /* Extract and NUL-terminate the object. */ | |
336 | *object = buf; | |
337 | while (*buf && *buf != ':') | |
338 | buf++; | |
339 | if (*buf == '\0') | |
340 | return -1; | |
341 | *buf++ = 0; | |
342 | ||
343 | /* Extract and NUL-terminate the read/write action. */ | |
344 | *rw = buf; | |
345 | while (*buf && *buf != ':') | |
346 | buf++; | |
347 | if (*buf == '\0') | |
348 | return -1; | |
349 | *buf++ = 0; | |
350 | ||
0876f84a DJ |
351 | /* Extract and NUL-terminate the annex. */ |
352 | *annex = buf; | |
353 | while (*buf && *buf != ':') | |
354 | buf++; | |
355 | if (*buf == '\0') | |
356 | return -1; | |
357 | *buf++ = 0; | |
358 | ||
d08aafef | 359 | *offset = buf; |
0876f84a DJ |
360 | return 0; |
361 | } | |
362 | ||
363 | /* Write the response to a successful qXfer read. Returns the | |
364 | length of the (binary) data stored in BUF, corresponding | |
365 | to as much of DATA/LEN as we could fit. IS_MORE controls | |
366 | the first character of the response. */ | |
367 | static int | |
f98cd059 | 368 | write_qxfer_response (char *buf, const gdb_byte *data, int len, int is_more) |
0876f84a DJ |
369 | { |
370 | int out_len; | |
371 | ||
372 | if (is_more) | |
373 | buf[0] = 'm'; | |
374 | else | |
375 | buf[0] = 'l'; | |
376 | ||
124e13d9 SM |
377 | return remote_escape_output (data, len, 1, (unsigned char *) buf + 1, |
378 | &out_len, PBUFSIZ - 2) + 1; | |
0876f84a DJ |
379 | } |
380 | ||
f4abbc16 | 381 | /* Handle btrace enabling in BTS format. */ |
9accd112 MM |
382 | |
383 | static const char * | |
f4abbc16 | 384 | handle_btrace_enable_bts (struct thread_info *thread) |
9accd112 MM |
385 | { |
386 | if (thread->btrace != NULL) | |
387 | return "E.Btrace already enabled."; | |
388 | ||
f4abbc16 MM |
389 | current_btrace_conf.format = BTRACE_FORMAT_BTS; |
390 | thread->btrace = target_enable_btrace (thread->entry.id, | |
391 | ¤t_btrace_conf); | |
9accd112 MM |
392 | if (thread->btrace == NULL) |
393 | return "E.Could not enable btrace."; | |
394 | ||
395 | return NULL; | |
396 | } | |
397 | ||
bc504a31 | 398 | /* Handle btrace enabling in Intel Processor Trace format. */ |
b20a6524 MM |
399 | |
400 | static const char * | |
401 | handle_btrace_enable_pt (struct thread_info *thread) | |
402 | { | |
403 | if (thread->btrace != NULL) | |
404 | return "E.Btrace already enabled."; | |
405 | ||
406 | current_btrace_conf.format = BTRACE_FORMAT_PT; | |
407 | thread->btrace = target_enable_btrace (thread->entry.id, | |
408 | ¤t_btrace_conf); | |
409 | if (thread->btrace == NULL) | |
410 | return "E.Could not enable btrace."; | |
411 | ||
412 | return NULL; | |
413 | } | |
414 | ||
9accd112 MM |
415 | /* Handle btrace disabling. */ |
416 | ||
417 | static const char * | |
418 | handle_btrace_disable (struct thread_info *thread) | |
419 | { | |
420 | ||
421 | if (thread->btrace == NULL) | |
422 | return "E.Branch tracing not enabled."; | |
423 | ||
424 | if (target_disable_btrace (thread->btrace) != 0) | |
425 | return "E.Could not disable branch tracing."; | |
426 | ||
427 | thread->btrace = NULL; | |
428 | return NULL; | |
429 | } | |
430 | ||
431 | /* Handle the "Qbtrace" packet. */ | |
432 | ||
433 | static int | |
434 | handle_btrace_general_set (char *own_buf) | |
435 | { | |
436 | struct thread_info *thread; | |
437 | const char *err; | |
438 | char *op; | |
439 | ||
61012eef | 440 | if (!startswith (own_buf, "Qbtrace:")) |
9accd112 MM |
441 | return 0; |
442 | ||
443 | op = own_buf + strlen ("Qbtrace:"); | |
444 | ||
9accd112 MM |
445 | if (ptid_equal (general_thread, null_ptid) |
446 | || ptid_equal (general_thread, minus_one_ptid)) | |
447 | { | |
448 | strcpy (own_buf, "E.Must select a single thread."); | |
449 | return -1; | |
450 | } | |
451 | ||
452 | thread = find_thread_ptid (general_thread); | |
453 | if (thread == NULL) | |
454 | { | |
455 | strcpy (own_buf, "E.No such thread."); | |
456 | return -1; | |
457 | } | |
458 | ||
459 | err = NULL; | |
460 | ||
461 | if (strcmp (op, "bts") == 0) | |
f4abbc16 | 462 | err = handle_btrace_enable_bts (thread); |
b20a6524 MM |
463 | else if (strcmp (op, "pt") == 0) |
464 | err = handle_btrace_enable_pt (thread); | |
9accd112 MM |
465 | else if (strcmp (op, "off") == 0) |
466 | err = handle_btrace_disable (thread); | |
467 | else | |
b20a6524 | 468 | err = "E.Bad Qbtrace operation. Use bts, pt, or off."; |
9accd112 MM |
469 | |
470 | if (err != 0) | |
471 | strcpy (own_buf, err); | |
472 | else | |
473 | write_ok (own_buf); | |
474 | ||
475 | return 1; | |
476 | } | |
477 | ||
d33501a5 MM |
478 | /* Handle the "Qbtrace-conf" packet. */ |
479 | ||
480 | static int | |
481 | handle_btrace_conf_general_set (char *own_buf) | |
482 | { | |
483 | struct thread_info *thread; | |
484 | char *op; | |
485 | ||
61012eef | 486 | if (!startswith (own_buf, "Qbtrace-conf:")) |
d33501a5 MM |
487 | return 0; |
488 | ||
489 | op = own_buf + strlen ("Qbtrace-conf:"); | |
490 | ||
491 | if (ptid_equal (general_thread, null_ptid) | |
492 | || ptid_equal (general_thread, minus_one_ptid)) | |
493 | { | |
494 | strcpy (own_buf, "E.Must select a single thread."); | |
495 | return -1; | |
496 | } | |
497 | ||
498 | thread = find_thread_ptid (general_thread); | |
499 | if (thread == NULL) | |
500 | { | |
501 | strcpy (own_buf, "E.No such thread."); | |
502 | return -1; | |
503 | } | |
504 | ||
61012eef | 505 | if (startswith (op, "bts:size=")) |
d33501a5 MM |
506 | { |
507 | unsigned long size; | |
508 | char *endp = NULL; | |
509 | ||
510 | errno = 0; | |
511 | size = strtoul (op + strlen ("bts:size="), &endp, 16); | |
512 | if (endp == NULL || *endp != 0 || errno != 0 || size > UINT_MAX) | |
513 | { | |
514 | strcpy (own_buf, "E.Bad size value."); | |
515 | return -1; | |
516 | } | |
517 | ||
518 | current_btrace_conf.bts.size = (unsigned int) size; | |
519 | } | |
b20a6524 MM |
520 | else if (strncmp (op, "pt:size=", strlen ("pt:size=")) == 0) |
521 | { | |
522 | unsigned long size; | |
523 | char *endp = NULL; | |
524 | ||
525 | errno = 0; | |
526 | size = strtoul (op + strlen ("pt:size="), &endp, 16); | |
527 | if (endp == NULL || *endp != 0 || errno != 0 || size > UINT_MAX) | |
528 | { | |
529 | strcpy (own_buf, "E.Bad size value."); | |
530 | return -1; | |
531 | } | |
532 | ||
533 | current_btrace_conf.pt.size = (unsigned int) size; | |
534 | } | |
d33501a5 MM |
535 | else |
536 | { | |
537 | strcpy (own_buf, "E.Bad Qbtrace configuration option."); | |
538 | return -1; | |
539 | } | |
540 | ||
541 | write_ok (own_buf); | |
542 | return 1; | |
543 | } | |
544 | ||
89be2091 | 545 | /* Handle all of the extended 'Q' packets. */ |
ae1ada35 DE |
546 | |
547 | static void | |
89be2091 DJ |
548 | handle_general_set (char *own_buf) |
549 | { | |
61012eef | 550 | if (startswith (own_buf, "QPassSignals:")) |
89be2091 | 551 | { |
a493e3e2 | 552 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
89be2091 DJ |
553 | const char *p = own_buf + strlen ("QPassSignals:"); |
554 | CORE_ADDR cursig; | |
555 | ||
556 | p = decode_address_to_semicolon (&cursig, p); | |
557 | for (i = 0; i < numsigs; i++) | |
558 | { | |
559 | if (i == cursig) | |
560 | { | |
561 | pass_signals[i] = 1; | |
562 | if (*p == '\0') | |
563 | /* Keep looping, to clear the remaining signals. */ | |
564 | cursig = -1; | |
565 | else | |
566 | p = decode_address_to_semicolon (&cursig, p); | |
567 | } | |
568 | else | |
569 | pass_signals[i] = 0; | |
570 | } | |
571 | strcpy (own_buf, "OK"); | |
572 | return; | |
573 | } | |
574 | ||
61012eef | 575 | if (startswith (own_buf, "QProgramSignals:")) |
9b224c5e | 576 | { |
a493e3e2 | 577 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
9b224c5e PA |
578 | const char *p = own_buf + strlen ("QProgramSignals:"); |
579 | CORE_ADDR cursig; | |
580 | ||
581 | program_signals_p = 1; | |
582 | ||
583 | p = decode_address_to_semicolon (&cursig, p); | |
584 | for (i = 0; i < numsigs; i++) | |
585 | { | |
586 | if (i == cursig) | |
587 | { | |
588 | program_signals[i] = 1; | |
589 | if (*p == '\0') | |
590 | /* Keep looping, to clear the remaining signals. */ | |
591 | cursig = -1; | |
592 | else | |
593 | p = decode_address_to_semicolon (&cursig, p); | |
594 | } | |
595 | else | |
596 | program_signals[i] = 0; | |
597 | } | |
598 | strcpy (own_buf, "OK"); | |
599 | return; | |
600 | } | |
601 | ||
82075af2 JS |
602 | if (startswith (own_buf, "QCatchSyscalls:")) |
603 | { | |
604 | const char *p = own_buf + sizeof ("QCatchSyscalls:") - 1; | |
605 | int enabled = -1; | |
606 | CORE_ADDR sysno; | |
607 | struct process_info *process; | |
608 | ||
609 | if (!target_running () || !target_supports_catch_syscall ()) | |
610 | { | |
611 | write_enn (own_buf); | |
612 | return; | |
613 | } | |
614 | ||
615 | if (strcmp (p, "0") == 0) | |
616 | enabled = 0; | |
617 | else if (p[0] == '1' && (p[1] == ';' || p[1] == '\0')) | |
618 | enabled = 1; | |
619 | else | |
620 | { | |
621 | fprintf (stderr, "Unknown catch-syscalls mode requested: %s\n", | |
622 | own_buf); | |
623 | write_enn (own_buf); | |
624 | return; | |
625 | } | |
626 | ||
627 | process = current_process (); | |
628 | VEC_truncate (int, process->syscalls_to_catch, 0); | |
629 | ||
630 | if (enabled) | |
631 | { | |
632 | p += 1; | |
633 | if (*p == ';') | |
634 | { | |
635 | p += 1; | |
636 | while (*p != '\0') | |
637 | { | |
638 | p = decode_address_to_semicolon (&sysno, p); | |
639 | VEC_safe_push (int, process->syscalls_to_catch, (int) sysno); | |
640 | } | |
641 | } | |
642 | else | |
643 | VEC_safe_push (int, process->syscalls_to_catch, ANY_SYSCALL); | |
644 | } | |
645 | ||
646 | write_ok (own_buf); | |
647 | return; | |
648 | } | |
649 | ||
0a2dde4a SDJ |
650 | if (strcmp (own_buf, "QEnvironmentReset") == 0) |
651 | { | |
652 | our_environ = gdb_environ::from_host_environ (); | |
653 | ||
654 | write_ok (own_buf); | |
655 | return; | |
656 | } | |
657 | ||
658 | if (startswith (own_buf, "QEnvironmentHexEncoded:")) | |
659 | { | |
660 | const char *p = own_buf + sizeof ("QEnvironmentHexEncoded:") - 1; | |
661 | /* The final form of the environment variable. FINAL_VAR will | |
662 | hold the 'VAR=VALUE' format. */ | |
663 | std::string final_var = hex2str (p); | |
664 | std::string var_name, var_value; | |
665 | ||
666 | if (remote_debug) | |
667 | { | |
668 | debug_printf (_("[QEnvironmentHexEncoded received '%s']\n"), p); | |
669 | debug_printf (_("[Environment variable to be set: '%s']\n"), | |
670 | final_var.c_str ()); | |
671 | debug_flush (); | |
672 | } | |
673 | ||
674 | size_t pos = final_var.find ('='); | |
675 | if (pos == std::string::npos) | |
676 | { | |
677 | warning (_("Unexpected format for environment variable: '%s'"), | |
678 | final_var.c_str ()); | |
679 | write_enn (own_buf); | |
680 | return; | |
681 | } | |
682 | ||
683 | var_name = final_var.substr (0, pos); | |
684 | var_value = final_var.substr (pos + 1, std::string::npos); | |
685 | ||
686 | our_environ.set (var_name.c_str (), var_value.c_str ()); | |
687 | ||
688 | write_ok (own_buf); | |
689 | return; | |
690 | } | |
691 | ||
692 | if (startswith (own_buf, "QEnvironmentUnset:")) | |
693 | { | |
694 | const char *p = own_buf + sizeof ("QEnvironmentUnset:") - 1; | |
695 | std::string varname = hex2str (p); | |
696 | ||
697 | if (remote_debug) | |
698 | { | |
699 | debug_printf (_("[QEnvironmentUnset received '%s']\n"), p); | |
700 | debug_printf (_("[Environment variable to be unset: '%s']\n"), | |
701 | varname.c_str ()); | |
702 | debug_flush (); | |
703 | } | |
704 | ||
705 | our_environ.unset (varname.c_str ()); | |
706 | ||
707 | write_ok (own_buf); | |
708 | return; | |
709 | } | |
710 | ||
a6f3e723 SL |
711 | if (strcmp (own_buf, "QStartNoAckMode") == 0) |
712 | { | |
713 | if (remote_debug) | |
714 | { | |
4eefa7bc PA |
715 | debug_printf ("[noack mode enabled]\n"); |
716 | debug_flush (); | |
a6f3e723 SL |
717 | } |
718 | ||
719 | noack_mode = 1; | |
720 | write_ok (own_buf); | |
721 | return; | |
722 | } | |
723 | ||
61012eef | 724 | if (startswith (own_buf, "QNonStop:")) |
bd99dc85 PA |
725 | { |
726 | char *mode = own_buf + 9; | |
727 | int req = -1; | |
b2333d22 | 728 | const char *req_str; |
bd99dc85 PA |
729 | |
730 | if (strcmp (mode, "0") == 0) | |
731 | req = 0; | |
732 | else if (strcmp (mode, "1") == 0) | |
733 | req = 1; | |
734 | else | |
735 | { | |
736 | /* We don't know what this mode is, so complain to | |
737 | GDB. */ | |
738 | fprintf (stderr, "Unknown non-stop mode requested: %s\n", | |
739 | own_buf); | |
740 | write_enn (own_buf); | |
741 | return; | |
742 | } | |
743 | ||
744 | req_str = req ? "non-stop" : "all-stop"; | |
745 | if (start_non_stop (req) != 0) | |
746 | { | |
747 | fprintf (stderr, "Setting %s mode failed\n", req_str); | |
748 | write_enn (own_buf); | |
749 | return; | |
750 | } | |
751 | ||
752 | non_stop = req; | |
753 | ||
754 | if (remote_debug) | |
4eefa7bc | 755 | debug_printf ("[%s mode enabled]\n", req_str); |
bd99dc85 PA |
756 | |
757 | write_ok (own_buf); | |
758 | return; | |
759 | } | |
760 | ||
61012eef | 761 | if (startswith (own_buf, "QDisableRandomization:")) |
03583c20 UW |
762 | { |
763 | char *packet = own_buf + strlen ("QDisableRandomization:"); | |
764 | ULONGEST setting; | |
765 | ||
766 | unpack_varlen_hex (packet, &setting); | |
767 | disable_randomization = setting; | |
768 | ||
769 | if (remote_debug) | |
770 | { | |
4eefa7bc PA |
771 | debug_printf (disable_randomization |
772 | ? "[address space randomization disabled]\n" | |
773 | : "[address space randomization enabled]\n"); | |
03583c20 UW |
774 | } |
775 | ||
776 | write_ok (own_buf); | |
777 | return; | |
778 | } | |
779 | ||
219f2f23 PA |
780 | if (target_supports_tracepoints () |
781 | && handle_tracepoint_general_set (own_buf)) | |
782 | return; | |
783 | ||
61012eef | 784 | if (startswith (own_buf, "QAgent:")) |
d1feda86 YQ |
785 | { |
786 | char *mode = own_buf + strlen ("QAgent:"); | |
787 | int req = 0; | |
788 | ||
789 | if (strcmp (mode, "0") == 0) | |
790 | req = 0; | |
791 | else if (strcmp (mode, "1") == 0) | |
792 | req = 1; | |
793 | else | |
794 | { | |
795 | /* We don't know what this value is, so complain to GDB. */ | |
796 | sprintf (own_buf, "E.Unknown QAgent value"); | |
797 | return; | |
798 | } | |
799 | ||
800 | /* Update the flag. */ | |
801 | use_agent = req; | |
802 | if (remote_debug) | |
4eefa7bc | 803 | debug_printf ("[%s agent]\n", req ? "Enable" : "Disable"); |
d1feda86 YQ |
804 | write_ok (own_buf); |
805 | return; | |
806 | } | |
807 | ||
9accd112 MM |
808 | if (handle_btrace_general_set (own_buf)) |
809 | return; | |
810 | ||
d33501a5 MM |
811 | if (handle_btrace_conf_general_set (own_buf)) |
812 | return; | |
813 | ||
65706a29 PA |
814 | if (startswith (own_buf, "QThreadEvents:")) |
815 | { | |
816 | char *mode = own_buf + strlen ("QThreadEvents:"); | |
817 | enum tribool req = TRIBOOL_UNKNOWN; | |
818 | ||
819 | if (strcmp (mode, "0") == 0) | |
820 | req = TRIBOOL_FALSE; | |
821 | else if (strcmp (mode, "1") == 0) | |
822 | req = TRIBOOL_TRUE; | |
823 | else | |
824 | { | |
825 | char *mode_copy = xstrdup (mode); | |
826 | ||
827 | /* We don't know what this mode is, so complain to GDB. */ | |
828 | sprintf (own_buf, "E.Unknown thread-events mode requested: %s\n", | |
829 | mode_copy); | |
830 | xfree (mode_copy); | |
831 | return; | |
832 | } | |
833 | ||
834 | report_thread_events = (req == TRIBOOL_TRUE); | |
835 | ||
836 | if (remote_debug) | |
837 | { | |
838 | const char *req_str = report_thread_events ? "enabled" : "disabled"; | |
839 | ||
4eefa7bc | 840 | debug_printf ("[thread events are now %s]\n", req_str); |
65706a29 PA |
841 | } |
842 | ||
843 | write_ok (own_buf); | |
844 | return; | |
845 | } | |
846 | ||
aefd8b33 SDJ |
847 | if (startswith (own_buf, "QStartupWithShell:")) |
848 | { | |
849 | const char *value = own_buf + strlen ("QStartupWithShell:"); | |
850 | ||
851 | if (strcmp (value, "1") == 0) | |
852 | startup_with_shell = true; | |
853 | else if (strcmp (value, "0") == 0) | |
854 | startup_with_shell = false; | |
855 | else | |
856 | { | |
857 | /* Unknown value. */ | |
858 | fprintf (stderr, "Unknown value to startup-with-shell: %s\n", | |
859 | own_buf); | |
860 | write_enn (own_buf); | |
861 | return; | |
862 | } | |
863 | ||
864 | if (remote_debug) | |
865 | debug_printf (_("[Inferior will %s started with shell]"), | |
866 | startup_with_shell ? "be" : "not be"); | |
867 | ||
868 | write_ok (own_buf); | |
869 | return; | |
870 | } | |
871 | ||
89be2091 DJ |
872 | /* Otherwise we didn't know what packet it was. Say we didn't |
873 | understand it. */ | |
874 | own_buf[0] = 0; | |
875 | } | |
876 | ||
23181151 | 877 | static const char * |
fb1e4ffc | 878 | get_features_xml (const char *annex) |
23181151 | 879 | { |
3aee8918 PA |
880 | const struct target_desc *desc = current_target_desc (); |
881 | ||
882 | /* `desc->xmltarget' defines what to return when looking for the | |
883 | "target.xml" file. Its contents can either be verbatim XML code | |
884 | (prefixed with a '@') or else the name of the actual XML file to | |
885 | be used in place of "target.xml". | |
fb1e4ffc | 886 | |
9b4b61c8 UW |
887 | This variable is set up from the auto-generated |
888 | init_registers_... routine for the current target. */ | |
fb1e4ffc | 889 | |
0abe8a89 | 890 | if (strcmp (annex, "target.xml") == 0) |
23181151 | 891 | { |
0abe8a89 YQ |
892 | const char *ret = tdesc_get_features_xml ((target_desc*) desc); |
893 | ||
894 | if (*ret == '@') | |
895 | return ret + 1; | |
23181151 | 896 | else |
0abe8a89 | 897 | annex = ret; |
23181151 DJ |
898 | } |
899 | ||
9b4b61c8 UW |
900 | #ifdef USE_XML |
901 | { | |
902 | extern const char *const xml_builtin[][2]; | |
903 | int i; | |
904 | ||
905 | /* Look for the annex. */ | |
906 | for (i = 0; xml_builtin[i][0] != NULL; i++) | |
907 | if (strcmp (annex, xml_builtin[i][0]) == 0) | |
908 | break; | |
909 | ||
910 | if (xml_builtin[i][0] != NULL) | |
911 | return xml_builtin[i][1]; | |
912 | } | |
913 | #endif | |
914 | ||
915 | return NULL; | |
23181151 DJ |
916 | } |
917 | ||
5b3da067 | 918 | static void |
c74d0ad8 DJ |
919 | monitor_show_help (void) |
920 | { | |
921 | monitor_output ("The following monitor commands are supported:\n"); | |
922 | monitor_output (" set debug <0|1>\n"); | |
1b3f6016 | 923 | monitor_output (" Enable general debugging messages\n"); |
aa5ca48f DE |
924 | monitor_output (" set debug-hw-points <0|1>\n"); |
925 | monitor_output (" Enable h/w breakpoint/watchpoint debugging messages\n"); | |
c74d0ad8 DJ |
926 | monitor_output (" set remote-debug <0|1>\n"); |
927 | monitor_output (" Enable remote protocol debugging messages\n"); | |
87ce2a04 DE |
928 | monitor_output (" set debug-format option1[,option2,...]\n"); |
929 | monitor_output (" Add additional information to debugging messages\n"); | |
930 | monitor_output (" Options: all, none"); | |
87ce2a04 | 931 | monitor_output (", timestamp"); |
87ce2a04 | 932 | monitor_output ("\n"); |
ecd7ecbc DJ |
933 | monitor_output (" exit\n"); |
934 | monitor_output (" Quit GDBserver\n"); | |
c74d0ad8 DJ |
935 | } |
936 | ||
764880b7 PA |
937 | /* Read trace frame or inferior memory. Returns the number of bytes |
938 | actually read, zero when no further transfer is possible, and -1 on | |
939 | error. Return of a positive value smaller than LEN does not | |
940 | indicate there's no more to be read, only the end of the transfer. | |
941 | E.g., when GDB reads memory from a traceframe, a first request may | |
942 | be served from a memory block that does not cover the whole request | |
943 | length. A following request gets the rest served from either | |
944 | another block (of the same traceframe) or from the read-only | |
945 | regions. */ | |
219f2f23 PA |
946 | |
947 | static int | |
90d74c30 | 948 | gdb_read_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) |
219f2f23 | 949 | { |
764880b7 | 950 | int res; |
90d74c30 | 951 | |
219f2f23 PA |
952 | if (current_traceframe >= 0) |
953 | { | |
954 | ULONGEST nbytes; | |
955 | ULONGEST length = len; | |
956 | ||
957 | if (traceframe_read_mem (current_traceframe, | |
958 | memaddr, myaddr, len, &nbytes)) | |
9a13b2fa | 959 | return -1; |
219f2f23 | 960 | /* Data read from trace buffer, we're done. */ |
764880b7 PA |
961 | if (nbytes > 0) |
962 | return nbytes; | |
219f2f23 | 963 | if (!in_readonly_region (memaddr, length)) |
764880b7 | 964 | return -1; |
219f2f23 PA |
965 | /* Otherwise we have a valid readonly case, fall through. */ |
966 | /* (assume no half-trace half-real blocks for now) */ | |
967 | } | |
968 | ||
764880b7 PA |
969 | res = prepare_to_access_memory (); |
970 | if (res == 0) | |
90d74c30 | 971 | { |
f0db101d PA |
972 | if (set_desired_thread (1)) |
973 | res = read_inferior_memory (memaddr, myaddr, len); | |
974 | else | |
975 | res = 1; | |
0146f85b | 976 | done_accessing_memory (); |
90d74c30 | 977 | |
764880b7 PA |
978 | return res == 0 ? len : -1; |
979 | } | |
980 | else | |
981 | return -1; | |
219f2f23 PA |
982 | } |
983 | ||
984 | /* Write trace frame or inferior memory. Actually, writing to trace | |
985 | frames is forbidden. */ | |
986 | ||
987 | static int | |
90d74c30 | 988 | gdb_write_memory (CORE_ADDR memaddr, const unsigned char *myaddr, int len) |
219f2f23 PA |
989 | { |
990 | if (current_traceframe >= 0) | |
991 | return EIO; | |
992 | else | |
90d74c30 PA |
993 | { |
994 | int ret; | |
995 | ||
996 | ret = prepare_to_access_memory (); | |
997 | if (ret == 0) | |
998 | { | |
f0db101d PA |
999 | if (set_desired_thread (1)) |
1000 | ret = write_inferior_memory (memaddr, myaddr, len); | |
1001 | else | |
1002 | ret = EIO; | |
0146f85b | 1003 | done_accessing_memory (); |
90d74c30 PA |
1004 | } |
1005 | return ret; | |
1006 | } | |
219f2f23 PA |
1007 | } |
1008 | ||
08388c79 DE |
1009 | /* Subroutine of handle_search_memory to simplify it. */ |
1010 | ||
1011 | static int | |
1012 | handle_search_memory_1 (CORE_ADDR start_addr, CORE_ADDR search_space_len, | |
1013 | gdb_byte *pattern, unsigned pattern_len, | |
1014 | gdb_byte *search_buf, | |
1015 | unsigned chunk_size, unsigned search_buf_size, | |
1016 | CORE_ADDR *found_addrp) | |
1017 | { | |
1018 | /* Prime the search buffer. */ | |
1019 | ||
764880b7 PA |
1020 | if (gdb_read_memory (start_addr, search_buf, search_buf_size) |
1021 | != search_buf_size) | |
08388c79 | 1022 | { |
b3dc46ff AB |
1023 | warning ("Unable to access %ld bytes of target " |
1024 | "memory at 0x%lx, halting search.", | |
1025 | (long) search_buf_size, (long) start_addr); | |
08388c79 DE |
1026 | return -1; |
1027 | } | |
1028 | ||
1029 | /* Perform the search. | |
1030 | ||
1031 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
1032 | When we've scanned N bytes we copy the trailing bytes to the start and | |
1033 | read in another N bytes. */ | |
1034 | ||
1035 | while (search_space_len >= pattern_len) | |
1036 | { | |
1037 | gdb_byte *found_ptr; | |
1038 | unsigned nr_search_bytes = (search_space_len < search_buf_size | |
1039 | ? search_space_len | |
1040 | : search_buf_size); | |
1041 | ||
d6f85c84 SM |
1042 | found_ptr = (gdb_byte *) memmem (search_buf, nr_search_bytes, pattern, |
1043 | pattern_len); | |
08388c79 DE |
1044 | |
1045 | if (found_ptr != NULL) | |
1046 | { | |
1047 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
1048 | *found_addrp = found_addr; | |
1049 | return 1; | |
1050 | } | |
1051 | ||
1052 | /* Not found in this chunk, skip to next chunk. */ | |
1053 | ||
1054 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
1055 | if (search_space_len >= chunk_size) | |
1056 | search_space_len -= chunk_size; | |
1057 | else | |
1058 | search_space_len = 0; | |
1059 | ||
1060 | if (search_space_len >= pattern_len) | |
1061 | { | |
1062 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 1063 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
1064 | int nr_to_read; |
1065 | ||
1066 | /* Copy the trailing part of the previous iteration to the front | |
1067 | of the buffer for the next iteration. */ | |
1068 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
1069 | ||
1070 | nr_to_read = (search_space_len - keep_len < chunk_size | |
1071 | ? search_space_len - keep_len | |
1072 | : chunk_size); | |
1073 | ||
90d74c30 | 1074 | if (gdb_read_memory (read_addr, search_buf + keep_len, |
764880b7 | 1075 | nr_to_read) != search_buf_size) |
08388c79 | 1076 | { |
b3dc46ff | 1077 | warning ("Unable to access %ld bytes of target memory " |
493e2a69 | 1078 | "at 0x%lx, halting search.", |
b3dc46ff | 1079 | (long) nr_to_read, (long) read_addr); |
08388c79 DE |
1080 | return -1; |
1081 | } | |
1082 | ||
1083 | start_addr += chunk_size; | |
1084 | } | |
1085 | } | |
1086 | ||
1087 | /* Not found. */ | |
1088 | ||
1089 | return 0; | |
1090 | } | |
1091 | ||
1092 | /* Handle qSearch:memory packets. */ | |
1093 | ||
1094 | static void | |
1095 | handle_search_memory (char *own_buf, int packet_len) | |
1096 | { | |
1097 | CORE_ADDR start_addr; | |
1098 | CORE_ADDR search_space_len; | |
1099 | gdb_byte *pattern; | |
1100 | unsigned int pattern_len; | |
1101 | /* NOTE: also defined in find.c testcase. */ | |
1102 | #define SEARCH_CHUNK_SIZE 16000 | |
1103 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
1104 | /* Buffer to hold memory contents for searching. */ | |
1105 | gdb_byte *search_buf; | |
1106 | unsigned search_buf_size; | |
1107 | int found; | |
1108 | CORE_ADDR found_addr; | |
1109 | int cmd_name_len = sizeof ("qSearch:memory:") - 1; | |
1110 | ||
224c3ddb | 1111 | pattern = (gdb_byte *) malloc (packet_len); |
08388c79 DE |
1112 | if (pattern == NULL) |
1113 | { | |
5e1471f5 | 1114 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
1115 | strcpy (own_buf, "E00"); |
1116 | return; | |
1117 | } | |
1118 | if (decode_search_memory_packet (own_buf + cmd_name_len, | |
1119 | packet_len - cmd_name_len, | |
1120 | &start_addr, &search_space_len, | |
1121 | pattern, &pattern_len) < 0) | |
1122 | { | |
1123 | free (pattern); | |
5e1471f5 | 1124 | error ("Error in parsing qSearch:memory packet"); |
08388c79 DE |
1125 | strcpy (own_buf, "E00"); |
1126 | return; | |
1127 | } | |
1128 | ||
1129 | search_buf_size = chunk_size + pattern_len - 1; | |
1130 | ||
1131 | /* No point in trying to allocate a buffer larger than the search space. */ | |
1132 | if (search_space_len < search_buf_size) | |
1133 | search_buf_size = search_space_len; | |
1134 | ||
224c3ddb | 1135 | search_buf = (gdb_byte *) malloc (search_buf_size); |
08388c79 DE |
1136 | if (search_buf == NULL) |
1137 | { | |
1138 | free (pattern); | |
5e1471f5 | 1139 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
1140 | strcpy (own_buf, "E00"); |
1141 | return; | |
1142 | } | |
1143 | ||
1144 | found = handle_search_memory_1 (start_addr, search_space_len, | |
1145 | pattern, pattern_len, | |
1146 | search_buf, chunk_size, search_buf_size, | |
1147 | &found_addr); | |
1148 | ||
1149 | if (found > 0) | |
1150 | sprintf (own_buf, "1,%lx", (long) found_addr); | |
1151 | else if (found == 0) | |
1152 | strcpy (own_buf, "0"); | |
1153 | else | |
1154 | strcpy (own_buf, "E00"); | |
1155 | ||
1156 | free (search_buf); | |
1157 | free (pattern); | |
1158 | } | |
1159 | ||
e8ca139e SM |
1160 | /* Handle the "D" packet. */ |
1161 | ||
1162 | static void | |
1163 | handle_detach (char *own_buf) | |
1164 | { | |
1165 | require_running_or_return (own_buf); | |
1166 | ||
1167 | int pid; | |
1168 | ||
1169 | if (multi_process) | |
1170 | { | |
1171 | /* skip 'D;' */ | |
1172 | pid = strtol (&own_buf[2], NULL, 16); | |
1173 | } | |
1174 | else | |
1175 | pid = ptid_get_pid (current_ptid); | |
1176 | ||
1177 | if ((tracing && disconnected_tracing) || any_persistent_commands ()) | |
1178 | { | |
1179 | struct process_info *process = find_process_pid (pid); | |
1180 | ||
1181 | if (process == NULL) | |
1182 | { | |
1183 | write_enn (own_buf); | |
1184 | return; | |
1185 | } | |
1186 | ||
1187 | if (tracing && disconnected_tracing) | |
1188 | fprintf (stderr, | |
1189 | "Disconnected tracing in effect, " | |
1190 | "leaving gdbserver attached to the process\n"); | |
1191 | ||
1192 | if (any_persistent_commands ()) | |
1193 | fprintf (stderr, | |
1194 | "Persistent commands are present, " | |
1195 | "leaving gdbserver attached to the process\n"); | |
1196 | ||
1197 | /* Make sure we're in non-stop/async mode, so we we can both | |
1198 | wait for an async socket accept, and handle async target | |
1199 | events simultaneously. There's also no point either in | |
1200 | having the target stop all threads, when we're going to | |
1201 | pass signals down without informing GDB. */ | |
1202 | if (!non_stop) | |
1203 | { | |
1204 | if (debug_threads) | |
1205 | debug_printf ("Forcing non-stop mode\n"); | |
1206 | ||
1207 | non_stop = 1; | |
1208 | start_non_stop (1); | |
1209 | } | |
1210 | ||
1211 | process->gdb_detached = 1; | |
1212 | ||
1213 | /* Detaching implicitly resumes all threads. */ | |
1214 | target_continue_no_signal (minus_one_ptid); | |
1215 | ||
1216 | write_ok (own_buf); | |
1217 | return; | |
1218 | } | |
1219 | ||
1220 | fprintf (stderr, "Detaching from process %d\n", pid); | |
1221 | stop_tracing (); | |
1222 | if (detach_inferior (pid) != 0) | |
1223 | write_enn (own_buf); | |
1224 | else | |
1225 | { | |
1226 | discard_queued_stop_replies (pid_to_ptid (pid)); | |
1227 | write_ok (own_buf); | |
1228 | ||
1229 | if (extended_protocol || target_running ()) | |
1230 | { | |
1231 | /* There is still at least one inferior remaining or | |
1232 | we are in extended mode, so don't terminate gdbserver, | |
1233 | and instead treat this like a normal program exit. */ | |
1234 | last_status.kind = TARGET_WAITKIND_EXITED; | |
1235 | last_status.value.integer = 0; | |
1236 | last_ptid = pid_to_ptid (pid); | |
1237 | ||
1238 | current_thread = NULL; | |
1239 | } | |
1240 | else | |
1241 | { | |
1242 | putpkt (own_buf); | |
1243 | remote_close (); | |
1244 | ||
1245 | /* If we are attached, then we can exit. Otherwise, we | |
1246 | need to hang around doing nothing, until the child is | |
1247 | gone. */ | |
1248 | join_inferior (pid); | |
1249 | exit (0); | |
1250 | } | |
1251 | } | |
1252 | } | |
1253 | ||
87ce2a04 DE |
1254 | /* Parse options to --debug-format= and "monitor set debug-format". |
1255 | ARG is the text after "--debug-format=" or "monitor set debug-format". | |
1256 | IS_MONITOR is non-zero if we're invoked via "monitor set debug-format". | |
1257 | This triggers calls to monitor_output. | |
1258 | The result is NULL if all options were parsed ok, otherwise an error | |
1259 | message which the caller must free. | |
1260 | ||
1261 | N.B. These commands affect all debug format settings, they are not | |
1262 | cumulative. If a format is not specified, it is turned off. | |
1263 | However, we don't go to extra trouble with things like | |
1264 | "monitor set debug-format all,none,timestamp". | |
1265 | Instead we just parse them one at a time, in order. | |
1266 | ||
1267 | The syntax for "monitor set debug" we support here is not identical | |
1268 | to gdb's "set debug foo on|off" because we also use this function to | |
1269 | parse "--debug-format=foo,bar". */ | |
1270 | ||
1271 | static char * | |
1272 | parse_debug_format_options (const char *arg, int is_monitor) | |
1273 | { | |
1274 | VEC (char_ptr) *options; | |
1275 | int ix; | |
1276 | char *option; | |
1277 | ||
1278 | /* First turn all debug format options off. */ | |
1279 | debug_timestamp = 0; | |
1280 | ||
1281 | /* First remove leading spaces, for "monitor set debug-format". */ | |
1282 | while (isspace (*arg)) | |
1283 | ++arg; | |
1284 | ||
1285 | options = delim_string_to_char_ptr_vec (arg, ','); | |
1286 | ||
1287 | for (ix = 0; VEC_iterate (char_ptr, options, ix, option); ++ix) | |
1288 | { | |
1289 | if (strcmp (option, "all") == 0) | |
1290 | { | |
1291 | debug_timestamp = 1; | |
1292 | if (is_monitor) | |
1293 | monitor_output ("All extra debug format options enabled.\n"); | |
1294 | } | |
1295 | else if (strcmp (option, "none") == 0) | |
1296 | { | |
1297 | debug_timestamp = 0; | |
1298 | if (is_monitor) | |
1299 | monitor_output ("All extra debug format options disabled.\n"); | |
1300 | } | |
87ce2a04 DE |
1301 | else if (strcmp (option, "timestamp") == 0) |
1302 | { | |
1303 | debug_timestamp = 1; | |
1304 | if (is_monitor) | |
1305 | monitor_output ("Timestamps will be added to debug output.\n"); | |
1306 | } | |
87ce2a04 DE |
1307 | else if (*option == '\0') |
1308 | { | |
1309 | /* An empty option, e.g., "--debug-format=foo,,bar", is ignored. */ | |
1310 | continue; | |
1311 | } | |
1312 | else | |
1313 | { | |
1314 | char *msg = xstrprintf ("Unknown debug-format argument: \"%s\"\n", | |
1315 | option); | |
1316 | ||
1317 | free_char_ptr_vec (options); | |
1318 | return msg; | |
1319 | } | |
1320 | } | |
1321 | ||
1322 | free_char_ptr_vec (options); | |
1323 | return NULL; | |
1324 | } | |
1325 | ||
cdbfd419 PP |
1326 | /* Handle monitor commands not handled by target-specific handlers. */ |
1327 | ||
1328 | static void | |
d73f2619 | 1329 | handle_monitor_command (char *mon, char *own_buf) |
cdbfd419 PP |
1330 | { |
1331 | if (strcmp (mon, "set debug 1") == 0) | |
1332 | { | |
1333 | debug_threads = 1; | |
1334 | monitor_output ("Debug output enabled.\n"); | |
1335 | } | |
1336 | else if (strcmp (mon, "set debug 0") == 0) | |
1337 | { | |
1338 | debug_threads = 0; | |
1339 | monitor_output ("Debug output disabled.\n"); | |
1340 | } | |
1341 | else if (strcmp (mon, "set debug-hw-points 1") == 0) | |
1342 | { | |
c5e92cca | 1343 | show_debug_regs = 1; |
cdbfd419 PP |
1344 | monitor_output ("H/W point debugging output enabled.\n"); |
1345 | } | |
1346 | else if (strcmp (mon, "set debug-hw-points 0") == 0) | |
1347 | { | |
c5e92cca | 1348 | show_debug_regs = 0; |
cdbfd419 PP |
1349 | monitor_output ("H/W point debugging output disabled.\n"); |
1350 | } | |
1351 | else if (strcmp (mon, "set remote-debug 1") == 0) | |
1352 | { | |
1353 | remote_debug = 1; | |
1354 | monitor_output ("Protocol debug output enabled.\n"); | |
1355 | } | |
1356 | else if (strcmp (mon, "set remote-debug 0") == 0) | |
1357 | { | |
1358 | remote_debug = 0; | |
1359 | monitor_output ("Protocol debug output disabled.\n"); | |
1360 | } | |
61012eef | 1361 | else if (startswith (mon, "set debug-format ")) |
87ce2a04 DE |
1362 | { |
1363 | char *error_msg | |
1364 | = parse_debug_format_options (mon + sizeof ("set debug-format ") - 1, | |
1365 | 1); | |
1366 | ||
1367 | if (error_msg != NULL) | |
1368 | { | |
1369 | monitor_output (error_msg); | |
1370 | monitor_show_help (); | |
1371 | write_enn (own_buf); | |
1372 | xfree (error_msg); | |
1373 | } | |
1374 | } | |
cdbfd419 PP |
1375 | else if (strcmp (mon, "help") == 0) |
1376 | monitor_show_help (); | |
1377 | else if (strcmp (mon, "exit") == 0) | |
1378 | exit_requested = 1; | |
1379 | else | |
1380 | { | |
1381 | monitor_output ("Unknown monitor command.\n\n"); | |
1382 | monitor_show_help (); | |
1383 | write_enn (own_buf); | |
1384 | } | |
1385 | } | |
1386 | ||
d08aafef PA |
1387 | /* Associates a callback with each supported qXfer'able object. */ |
1388 | ||
1389 | struct qxfer | |
1390 | { | |
1391 | /* The object this handler handles. */ | |
1392 | const char *object; | |
1393 | ||
1394 | /* Request that the target transfer up to LEN 8-bit bytes of the | |
1395 | target's OBJECT. The OFFSET, for a seekable object, specifies | |
1396 | the starting point. The ANNEX can be used to provide additional | |
1397 | data-specific information to the target. | |
1398 | ||
1399 | Return the number of bytes actually transfered, zero when no | |
5cc22e4c MM |
1400 | further transfer is possible, -1 on error, -2 when the transfer |
1401 | is not supported, and -3 on a verbose error message that should | |
1402 | be preserved. Return of a positive value smaller than LEN does | |
1403 | not indicate the end of the object, only the end of the transfer. | |
d08aafef PA |
1404 | |
1405 | One, and only one, of readbuf or writebuf must be non-NULL. */ | |
1406 | int (*xfer) (const char *annex, | |
1407 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1408 | ULONGEST offset, LONGEST len); | |
1409 | }; | |
1410 | ||
1411 | /* Handle qXfer:auxv:read. */ | |
1412 | ||
1413 | static int | |
1414 | handle_qxfer_auxv (const char *annex, | |
1415 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1416 | ULONGEST offset, LONGEST len) | |
1417 | { | |
1418 | if (the_target->read_auxv == NULL || writebuf != NULL) | |
1419 | return -2; | |
1420 | ||
f0db101d | 1421 | if (annex[0] != '\0' || current_thread == NULL) |
d08aafef PA |
1422 | return -1; |
1423 | ||
1424 | return (*the_target->read_auxv) (offset, readbuf, len); | |
1425 | } | |
1426 | ||
e57f1de3 GB |
1427 | /* Handle qXfer:exec-file:read. */ |
1428 | ||
1429 | static int | |
1430 | handle_qxfer_exec_file (const char *const_annex, | |
1431 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1432 | ULONGEST offset, LONGEST len) | |
1433 | { | |
835205d0 | 1434 | char *file; |
e57f1de3 GB |
1435 | ULONGEST pid; |
1436 | int total_len; | |
1437 | ||
1438 | if (the_target->pid_to_exec_file == NULL || writebuf != NULL) | |
1439 | return -2; | |
1440 | ||
835205d0 GB |
1441 | if (const_annex[0] == '\0') |
1442 | { | |
1443 | if (current_thread == NULL) | |
1444 | return -1; | |
1445 | ||
1446 | pid = pid_of (current_thread); | |
1447 | } | |
1448 | else | |
1449 | { | |
224c3ddb | 1450 | char *annex = (char *) alloca (strlen (const_annex) + 1); |
835205d0 GB |
1451 | |
1452 | strcpy (annex, const_annex); | |
1453 | annex = unpack_varlen_hex (annex, &pid); | |
1454 | ||
1455 | if (annex[0] != '\0') | |
1456 | return -1; | |
1457 | } | |
1458 | ||
1459 | if (pid <= 0) | |
e57f1de3 GB |
1460 | return -1; |
1461 | ||
1462 | file = (*the_target->pid_to_exec_file) (pid); | |
1463 | if (file == NULL) | |
1464 | return -1; | |
1465 | ||
1466 | total_len = strlen (file); | |
1467 | ||
1468 | if (offset > total_len) | |
1469 | return -1; | |
1470 | ||
1471 | if (offset + len > total_len) | |
1472 | len = total_len - offset; | |
1473 | ||
1474 | memcpy (readbuf, file + offset, len); | |
1475 | return len; | |
1476 | } | |
1477 | ||
d08aafef PA |
1478 | /* Handle qXfer:features:read. */ |
1479 | ||
1480 | static int | |
1481 | handle_qxfer_features (const char *annex, | |
1482 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1483 | ULONGEST offset, LONGEST len) | |
1484 | { | |
1485 | const char *document; | |
1486 | size_t total_len; | |
1487 | ||
1488 | if (writebuf != NULL) | |
1489 | return -2; | |
1490 | ||
1491 | if (!target_running ()) | |
1492 | return -1; | |
1493 | ||
1494 | /* Grab the correct annex. */ | |
1495 | document = get_features_xml (annex); | |
1496 | if (document == NULL) | |
1497 | return -1; | |
1498 | ||
1499 | total_len = strlen (document); | |
1500 | ||
1501 | if (offset > total_len) | |
1502 | return -1; | |
1503 | ||
1504 | if (offset + len > total_len) | |
1505 | len = total_len - offset; | |
1506 | ||
1507 | memcpy (readbuf, document + offset, len); | |
1508 | return len; | |
1509 | } | |
1510 | ||
649ebbca DE |
1511 | /* Worker routine for handle_qxfer_libraries. |
1512 | Add to the length pointed to by ARG a conservative estimate of the | |
1513 | length needed to transmit the file name of INF. */ | |
1514 | ||
1515 | static void | |
1516 | accumulate_file_name_length (struct inferior_list_entry *inf, void *arg) | |
1517 | { | |
1518 | struct dll_info *dll = (struct dll_info *) inf; | |
9a3c8263 | 1519 | unsigned int *total_len = (unsigned int *) arg; |
649ebbca DE |
1520 | |
1521 | /* Over-estimate the necessary memory. Assume that every character | |
1522 | in the library name must be escaped. */ | |
1523 | *total_len += 128 + 6 * strlen (dll->name); | |
1524 | } | |
1525 | ||
1526 | /* Worker routine for handle_qxfer_libraries. | |
1527 | Emit the XML to describe the library in INF. */ | |
1528 | ||
1529 | static void | |
1530 | emit_dll_description (struct inferior_list_entry *inf, void *arg) | |
1531 | { | |
1532 | struct dll_info *dll = (struct dll_info *) inf; | |
9a3c8263 | 1533 | char **p_ptr = (char **) arg; |
649ebbca DE |
1534 | char *p = *p_ptr; |
1535 | char *name; | |
1536 | ||
1537 | strcpy (p, " <library name=\""); | |
1538 | p = p + strlen (p); | |
1539 | name = xml_escape_text (dll->name); | |
1540 | strcpy (p, name); | |
1541 | free (name); | |
1542 | p = p + strlen (p); | |
1543 | strcpy (p, "\"><segment address=\""); | |
1544 | p = p + strlen (p); | |
1545 | sprintf (p, "0x%lx", (long) dll->base_addr); | |
1546 | p = p + strlen (p); | |
1547 | strcpy (p, "\"/></library>\n"); | |
1548 | p = p + strlen (p); | |
1549 | ||
1550 | *p_ptr = p; | |
1551 | } | |
1552 | ||
d08aafef PA |
1553 | /* Handle qXfer:libraries:read. */ |
1554 | ||
1555 | static int | |
1556 | handle_qxfer_libraries (const char *annex, | |
1557 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1558 | ULONGEST offset, LONGEST len) | |
1559 | { | |
1560 | unsigned int total_len; | |
1561 | char *document, *p; | |
d08aafef PA |
1562 | |
1563 | if (writebuf != NULL) | |
1564 | return -2; | |
1565 | ||
f0db101d | 1566 | if (annex[0] != '\0' || current_thread == NULL) |
d08aafef PA |
1567 | return -1; |
1568 | ||
d08aafef | 1569 | total_len = 64; |
649ebbca DE |
1570 | for_each_inferior_with_data (&all_dlls, accumulate_file_name_length, |
1571 | &total_len); | |
d08aafef | 1572 | |
224c3ddb | 1573 | document = (char *) malloc (total_len); |
d08aafef PA |
1574 | if (document == NULL) |
1575 | return -1; | |
1576 | ||
24c05f46 | 1577 | strcpy (document, "<library-list version=\"1.0\">\n"); |
d08aafef PA |
1578 | p = document + strlen (document); |
1579 | ||
649ebbca | 1580 | for_each_inferior_with_data (&all_dlls, emit_dll_description, &p); |
d08aafef PA |
1581 | |
1582 | strcpy (p, "</library-list>\n"); | |
1583 | ||
1584 | total_len = strlen (document); | |
1585 | ||
1586 | if (offset > total_len) | |
1587 | { | |
1588 | free (document); | |
1589 | return -1; | |
1590 | } | |
1591 | ||
1592 | if (offset + len > total_len) | |
1593 | len = total_len - offset; | |
1594 | ||
1595 | memcpy (readbuf, document + offset, len); | |
1596 | free (document); | |
1597 | return len; | |
1598 | } | |
1599 | ||
2268b414 JK |
1600 | /* Handle qXfer:libraries-svr4:read. */ |
1601 | ||
1602 | static int | |
1603 | handle_qxfer_libraries_svr4 (const char *annex, | |
1604 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1605 | ULONGEST offset, LONGEST len) | |
1606 | { | |
1607 | if (writebuf != NULL) | |
1608 | return -2; | |
1609 | ||
f0db101d | 1610 | if (current_thread == NULL || the_target->qxfer_libraries_svr4 == NULL) |
2268b414 JK |
1611 | return -1; |
1612 | ||
1613 | return the_target->qxfer_libraries_svr4 (annex, readbuf, writebuf, offset, len); | |
1614 | } | |
1615 | ||
d08aafef PA |
1616 | /* Handle qXfer:osadata:read. */ |
1617 | ||
1618 | static int | |
1619 | handle_qxfer_osdata (const char *annex, | |
1620 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1621 | ULONGEST offset, LONGEST len) | |
1622 | { | |
1623 | if (the_target->qxfer_osdata == NULL || writebuf != NULL) | |
1624 | return -2; | |
1625 | ||
1626 | return (*the_target->qxfer_osdata) (annex, readbuf, NULL, offset, len); | |
1627 | } | |
1628 | ||
1629 | /* Handle qXfer:siginfo:read and qXfer:siginfo:write. */ | |
1630 | ||
1631 | static int | |
1632 | handle_qxfer_siginfo (const char *annex, | |
1633 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1634 | ULONGEST offset, LONGEST len) | |
1635 | { | |
1636 | if (the_target->qxfer_siginfo == NULL) | |
1637 | return -2; | |
1638 | ||
f0db101d | 1639 | if (annex[0] != '\0' || current_thread == NULL) |
d08aafef PA |
1640 | return -1; |
1641 | ||
1642 | return (*the_target->qxfer_siginfo) (annex, readbuf, writebuf, offset, len); | |
1643 | } | |
1644 | ||
1645 | /* Handle qXfer:spu:read and qXfer:spu:write. */ | |
1646 | ||
1647 | static int | |
1648 | handle_qxfer_spu (const char *annex, | |
1649 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1650 | ULONGEST offset, LONGEST len) | |
1651 | { | |
1652 | if (the_target->qxfer_spu == NULL) | |
1653 | return -2; | |
1654 | ||
f0db101d | 1655 | if (current_thread == NULL) |
d08aafef PA |
1656 | return -1; |
1657 | ||
1658 | return (*the_target->qxfer_spu) (annex, readbuf, writebuf, offset, len); | |
1659 | } | |
1660 | ||
1661 | /* Handle qXfer:statictrace:read. */ | |
1662 | ||
1663 | static int | |
1664 | handle_qxfer_statictrace (const char *annex, | |
1665 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1666 | ULONGEST offset, LONGEST len) | |
1667 | { | |
1668 | ULONGEST nbytes; | |
1669 | ||
1670 | if (writebuf != NULL) | |
1671 | return -2; | |
1672 | ||
f0db101d | 1673 | if (annex[0] != '\0' || current_thread == NULL || current_traceframe == -1) |
d08aafef PA |
1674 | return -1; |
1675 | ||
1676 | if (traceframe_read_sdata (current_traceframe, offset, | |
1677 | readbuf, len, &nbytes)) | |
1678 | return -1; | |
1679 | return nbytes; | |
1680 | } | |
1681 | ||
649ebbca DE |
1682 | /* Helper for handle_qxfer_threads_proper. |
1683 | Emit the XML to describe the thread of INF. */ | |
d08aafef | 1684 | |
dc146f7c | 1685 | static void |
649ebbca | 1686 | handle_qxfer_threads_worker (struct inferior_list_entry *inf, void *arg) |
dc146f7c | 1687 | { |
649ebbca | 1688 | struct thread_info *thread = (struct thread_info *) inf; |
9a3c8263 | 1689 | struct buffer *buffer = (struct buffer *) arg; |
649ebbca DE |
1690 | ptid_t ptid = thread_to_gdb_id (thread); |
1691 | char ptid_s[100]; | |
1692 | int core = target_core_of_thread (ptid); | |
1693 | char core_s[21]; | |
79efa585 | 1694 | const char *name = target_thread_name (ptid); |
dc146f7c | 1695 | |
649ebbca | 1696 | write_ptid (ptid_s, ptid); |
dc146f7c | 1697 | |
79efa585 SM |
1698 | buffer_xml_printf (buffer, "<thread id=\"%s\"", ptid_s); |
1699 | ||
649ebbca | 1700 | if (core != -1) |
dc146f7c | 1701 | { |
649ebbca | 1702 | sprintf (core_s, "%d", core); |
79efa585 | 1703 | buffer_xml_printf (buffer, " core=\"%s\"", core_s); |
649ebbca | 1704 | } |
79efa585 SM |
1705 | |
1706 | if (name != NULL) | |
1707 | buffer_xml_printf (buffer, " name=\"%s\"", name); | |
1708 | ||
1709 | buffer_xml_printf (buffer, "/>\n"); | |
649ebbca | 1710 | } |
dc146f7c | 1711 | |
649ebbca | 1712 | /* Helper for handle_qxfer_threads. */ |
dc146f7c | 1713 | |
649ebbca DE |
1714 | static void |
1715 | handle_qxfer_threads_proper (struct buffer *buffer) | |
1716 | { | |
1717 | buffer_grow_str (buffer, "<threads>\n"); | |
1718 | ||
1719 | for_each_inferior_with_data (&all_threads, handle_qxfer_threads_worker, | |
1720 | buffer); | |
dc146f7c VP |
1721 | |
1722 | buffer_grow_str0 (buffer, "</threads>\n"); | |
1723 | } | |
1724 | ||
d08aafef PA |
1725 | /* Handle qXfer:threads:read. */ |
1726 | ||
dc146f7c | 1727 | static int |
d08aafef PA |
1728 | handle_qxfer_threads (const char *annex, |
1729 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1730 | ULONGEST offset, LONGEST len) | |
dc146f7c VP |
1731 | { |
1732 | static char *result = 0; | |
1733 | static unsigned int result_length = 0; | |
1734 | ||
d08aafef PA |
1735 | if (writebuf != NULL) |
1736 | return -2; | |
1737 | ||
f0db101d | 1738 | if (annex[0] != '\0') |
d08aafef | 1739 | return -1; |
dc146f7c VP |
1740 | |
1741 | if (offset == 0) | |
1742 | { | |
1743 | struct buffer buffer; | |
1744 | /* When asked for data at offset 0, generate everything and store into | |
1745 | 'result'. Successive reads will be served off 'result'. */ | |
1746 | if (result) | |
1747 | free (result); | |
1748 | ||
1749 | buffer_init (&buffer); | |
1750 | ||
d08aafef | 1751 | handle_qxfer_threads_proper (&buffer); |
dc146f7c VP |
1752 | |
1753 | result = buffer_finish (&buffer); | |
1754 | result_length = strlen (result); | |
1755 | buffer_free (&buffer); | |
1756 | } | |
1757 | ||
1758 | if (offset >= result_length) | |
1759 | { | |
1760 | /* We're out of data. */ | |
1761 | free (result); | |
1762 | result = NULL; | |
1763 | result_length = 0; | |
1764 | return 0; | |
1765 | } | |
1766 | ||
d08aafef PA |
1767 | if (len > result_length - offset) |
1768 | len = result_length - offset; | |
1769 | ||
1770 | memcpy (readbuf, result + offset, len); | |
1771 | ||
1772 | return len; | |
1773 | } | |
1774 | ||
b3b9301e PA |
1775 | /* Handle qXfer:traceframe-info:read. */ |
1776 | ||
1777 | static int | |
1778 | handle_qxfer_traceframe_info (const char *annex, | |
1779 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1780 | ULONGEST offset, LONGEST len) | |
1781 | { | |
1782 | static char *result = 0; | |
1783 | static unsigned int result_length = 0; | |
1784 | ||
1785 | if (writebuf != NULL) | |
1786 | return -2; | |
1787 | ||
1788 | if (!target_running () || annex[0] != '\0' || current_traceframe == -1) | |
1789 | return -1; | |
1790 | ||
1791 | if (offset == 0) | |
1792 | { | |
1793 | struct buffer buffer; | |
1794 | ||
1795 | /* When asked for data at offset 0, generate everything and | |
1796 | store into 'result'. Successive reads will be served off | |
1797 | 'result'. */ | |
1798 | free (result); | |
1799 | ||
1800 | buffer_init (&buffer); | |
1801 | ||
1802 | traceframe_read_info (current_traceframe, &buffer); | |
1803 | ||
1804 | result = buffer_finish (&buffer); | |
1805 | result_length = strlen (result); | |
1806 | buffer_free (&buffer); | |
1807 | } | |
1808 | ||
1809 | if (offset >= result_length) | |
1810 | { | |
1811 | /* We're out of data. */ | |
1812 | free (result); | |
1813 | result = NULL; | |
1814 | result_length = 0; | |
1815 | return 0; | |
1816 | } | |
1817 | ||
1818 | if (len > result_length - offset) | |
1819 | len = result_length - offset; | |
1820 | ||
1821 | memcpy (readbuf, result + offset, len); | |
1822 | return len; | |
1823 | } | |
1824 | ||
78d85199 YQ |
1825 | /* Handle qXfer:fdpic:read. */ |
1826 | ||
1827 | static int | |
1828 | handle_qxfer_fdpic (const char *annex, gdb_byte *readbuf, | |
1829 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1830 | { | |
1831 | if (the_target->read_loadmap == NULL) | |
1832 | return -2; | |
1833 | ||
f0db101d | 1834 | if (current_thread == NULL) |
78d85199 YQ |
1835 | return -1; |
1836 | ||
1837 | return (*the_target->read_loadmap) (annex, offset, readbuf, len); | |
1838 | } | |
1839 | ||
9accd112 MM |
1840 | /* Handle qXfer:btrace:read. */ |
1841 | ||
1842 | static int | |
1843 | handle_qxfer_btrace (const char *annex, | |
1844 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1845 | ULONGEST offset, LONGEST len) | |
1846 | { | |
1847 | static struct buffer cache; | |
1848 | struct thread_info *thread; | |
add67df8 PA |
1849 | enum btrace_read_type type; |
1850 | int result; | |
9accd112 MM |
1851 | |
1852 | if (the_target->read_btrace == NULL || writebuf != NULL) | |
1853 | return -2; | |
1854 | ||
9accd112 MM |
1855 | if (ptid_equal (general_thread, null_ptid) |
1856 | || ptid_equal (general_thread, minus_one_ptid)) | |
1857 | { | |
1858 | strcpy (own_buf, "E.Must select a single thread."); | |
1859 | return -3; | |
1860 | } | |
1861 | ||
1862 | thread = find_thread_ptid (general_thread); | |
1863 | if (thread == NULL) | |
1864 | { | |
1865 | strcpy (own_buf, "E.No such thread."); | |
1866 | return -3; | |
1867 | } | |
1868 | ||
1869 | if (thread->btrace == NULL) | |
1870 | { | |
1871 | strcpy (own_buf, "E.Btrace not enabled."); | |
1872 | return -3; | |
1873 | } | |
1874 | ||
1875 | if (strcmp (annex, "all") == 0) | |
864089d2 | 1876 | type = BTRACE_READ_ALL; |
9accd112 | 1877 | else if (strcmp (annex, "new") == 0) |
864089d2 | 1878 | type = BTRACE_READ_NEW; |
969c39fb MM |
1879 | else if (strcmp (annex, "delta") == 0) |
1880 | type = BTRACE_READ_DELTA; | |
9accd112 MM |
1881 | else |
1882 | { | |
1883 | strcpy (own_buf, "E.Bad annex."); | |
1884 | return -3; | |
1885 | } | |
1886 | ||
1887 | if (offset == 0) | |
1888 | { | |
1889 | buffer_free (&cache); | |
1890 | ||
969c39fb MM |
1891 | result = target_read_btrace (thread->btrace, &cache, type); |
1892 | if (result != 0) | |
1893 | { | |
1894 | memcpy (own_buf, cache.buffer, cache.used_size); | |
1895 | return -3; | |
1896 | } | |
9accd112 MM |
1897 | } |
1898 | else if (offset > cache.used_size) | |
1899 | { | |
1900 | buffer_free (&cache); | |
1901 | return -3; | |
1902 | } | |
1903 | ||
1904 | if (len > cache.used_size - offset) | |
1905 | len = cache.used_size - offset; | |
1906 | ||
1907 | memcpy (readbuf, cache.buffer + offset, len); | |
1908 | ||
1909 | return len; | |
1910 | } | |
1911 | ||
f4abbc16 MM |
1912 | /* Handle qXfer:btrace-conf:read. */ |
1913 | ||
1914 | static int | |
1915 | handle_qxfer_btrace_conf (const char *annex, | |
1916 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1917 | ULONGEST offset, LONGEST len) | |
1918 | { | |
1919 | static struct buffer cache; | |
1920 | struct thread_info *thread; | |
1921 | int result; | |
1922 | ||
1923 | if (the_target->read_btrace_conf == NULL || writebuf != NULL) | |
1924 | return -2; | |
1925 | ||
f0db101d | 1926 | if (annex[0] != '\0') |
f4abbc16 MM |
1927 | return -1; |
1928 | ||
1929 | if (ptid_equal (general_thread, null_ptid) | |
1930 | || ptid_equal (general_thread, minus_one_ptid)) | |
1931 | { | |
1932 | strcpy (own_buf, "E.Must select a single thread."); | |
1933 | return -3; | |
1934 | } | |
1935 | ||
1936 | thread = find_thread_ptid (general_thread); | |
1937 | if (thread == NULL) | |
1938 | { | |
1939 | strcpy (own_buf, "E.No such thread."); | |
1940 | return -3; | |
1941 | } | |
1942 | ||
1943 | if (thread->btrace == NULL) | |
1944 | { | |
1945 | strcpy (own_buf, "E.Btrace not enabled."); | |
1946 | return -3; | |
1947 | } | |
1948 | ||
1949 | if (offset == 0) | |
1950 | { | |
1951 | buffer_free (&cache); | |
1952 | ||
1953 | result = target_read_btrace_conf (thread->btrace, &cache); | |
1954 | if (result != 0) | |
1955 | { | |
1956 | memcpy (own_buf, cache.buffer, cache.used_size); | |
1957 | return -3; | |
1958 | } | |
1959 | } | |
1960 | else if (offset > cache.used_size) | |
1961 | { | |
1962 | buffer_free (&cache); | |
1963 | return -3; | |
1964 | } | |
1965 | ||
1966 | if (len > cache.used_size - offset) | |
1967 | len = cache.used_size - offset; | |
1968 | ||
1969 | memcpy (readbuf, cache.buffer + offset, len); | |
1970 | ||
1971 | return len; | |
1972 | } | |
1973 | ||
d08aafef PA |
1974 | static const struct qxfer qxfer_packets[] = |
1975 | { | |
1976 | { "auxv", handle_qxfer_auxv }, | |
9accd112 | 1977 | { "btrace", handle_qxfer_btrace }, |
f4abbc16 | 1978 | { "btrace-conf", handle_qxfer_btrace_conf }, |
e57f1de3 | 1979 | { "exec-file", handle_qxfer_exec_file}, |
78d85199 | 1980 | { "fdpic", handle_qxfer_fdpic}, |
d08aafef PA |
1981 | { "features", handle_qxfer_features }, |
1982 | { "libraries", handle_qxfer_libraries }, | |
2268b414 | 1983 | { "libraries-svr4", handle_qxfer_libraries_svr4 }, |
d08aafef PA |
1984 | { "osdata", handle_qxfer_osdata }, |
1985 | { "siginfo", handle_qxfer_siginfo }, | |
1986 | { "spu", handle_qxfer_spu }, | |
1987 | { "statictrace", handle_qxfer_statictrace }, | |
1988 | { "threads", handle_qxfer_threads }, | |
b3b9301e | 1989 | { "traceframe-info", handle_qxfer_traceframe_info }, |
d08aafef PA |
1990 | }; |
1991 | ||
1992 | static int | |
1993 | handle_qxfer (char *own_buf, int packet_len, int *new_packet_len_p) | |
1994 | { | |
1995 | int i; | |
1996 | char *object; | |
1997 | char *rw; | |
1998 | char *annex; | |
1999 | char *offset; | |
2000 | ||
61012eef | 2001 | if (!startswith (own_buf, "qXfer:")) |
d08aafef PA |
2002 | return 0; |
2003 | ||
2004 | /* Grab the object, r/w and annex. */ | |
2005 | if (decode_xfer (own_buf + 6, &object, &rw, &annex, &offset) < 0) | |
2006 | { | |
2007 | write_enn (own_buf); | |
2008 | return 1; | |
2009 | } | |
2010 | ||
2011 | for (i = 0; | |
2012 | i < sizeof (qxfer_packets) / sizeof (qxfer_packets[0]); | |
2013 | i++) | |
2014 | { | |
2015 | const struct qxfer *q = &qxfer_packets[i]; | |
2016 | ||
2017 | if (strcmp (object, q->object) == 0) | |
2018 | { | |
2019 | if (strcmp (rw, "read") == 0) | |
2020 | { | |
2021 | unsigned char *data; | |
2022 | int n; | |
2023 | CORE_ADDR ofs; | |
2024 | unsigned int len; | |
2025 | ||
2026 | /* Grab the offset and length. */ | |
2027 | if (decode_xfer_read (offset, &ofs, &len) < 0) | |
2028 | { | |
2029 | write_enn (own_buf); | |
2030 | return 1; | |
2031 | } | |
2032 | ||
2033 | /* Read one extra byte, as an indicator of whether there is | |
2034 | more. */ | |
2035 | if (len > PBUFSIZ - 2) | |
2036 | len = PBUFSIZ - 2; | |
224c3ddb | 2037 | data = (unsigned char *) malloc (len + 1); |
d08aafef PA |
2038 | if (data == NULL) |
2039 | { | |
2040 | write_enn (own_buf); | |
2041 | return 1; | |
2042 | } | |
2043 | n = (*q->xfer) (annex, data, NULL, ofs, len + 1); | |
2044 | if (n == -2) | |
2045 | { | |
2046 | free (data); | |
2047 | return 0; | |
2048 | } | |
5cc22e4c MM |
2049 | else if (n == -3) |
2050 | { | |
2051 | /* Preserve error message. */ | |
2052 | } | |
d08aafef PA |
2053 | else if (n < 0) |
2054 | write_enn (own_buf); | |
2055 | else if (n > len) | |
2056 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); | |
2057 | else | |
2058 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); | |
2059 | ||
2060 | free (data); | |
2061 | return 1; | |
2062 | } | |
2063 | else if (strcmp (rw, "write") == 0) | |
2064 | { | |
2065 | int n; | |
2066 | unsigned int len; | |
2067 | CORE_ADDR ofs; | |
2068 | unsigned char *data; | |
2069 | ||
2070 | strcpy (own_buf, "E00"); | |
224c3ddb | 2071 | data = (unsigned char *) malloc (packet_len - (offset - own_buf)); |
d08aafef PA |
2072 | if (data == NULL) |
2073 | { | |
2074 | write_enn (own_buf); | |
2075 | return 1; | |
2076 | } | |
2077 | if (decode_xfer_write (offset, packet_len - (offset - own_buf), | |
2078 | &ofs, &len, data) < 0) | |
2079 | { | |
2080 | free (data); | |
2081 | write_enn (own_buf); | |
2082 | return 1; | |
2083 | } | |
2084 | ||
2085 | n = (*q->xfer) (annex, NULL, data, ofs, len); | |
2086 | if (n == -2) | |
2087 | { | |
2088 | free (data); | |
2089 | return 0; | |
2090 | } | |
5cc22e4c MM |
2091 | else if (n == -3) |
2092 | { | |
2093 | /* Preserve error message. */ | |
2094 | } | |
d08aafef PA |
2095 | else if (n < 0) |
2096 | write_enn (own_buf); | |
2097 | else | |
2098 | sprintf (own_buf, "%x", n); | |
dc146f7c | 2099 | |
d08aafef PA |
2100 | free (data); |
2101 | return 1; | |
2102 | } | |
dc146f7c | 2103 | |
d08aafef PA |
2104 | return 0; |
2105 | } | |
2106 | } | |
dc146f7c | 2107 | |
d08aafef | 2108 | return 0; |
dc146f7c VP |
2109 | } |
2110 | ||
30ba68cb MS |
2111 | /* Compute 32 bit CRC from inferior memory. |
2112 | ||
2113 | On success, return 32 bit CRC. | |
2114 | On failure, return (unsigned long long) -1. */ | |
2115 | ||
2116 | static unsigned long long | |
2117 | crc32 (CORE_ADDR base, int len, unsigned int crc) | |
2118 | { | |
30ba68cb MS |
2119 | while (len--) |
2120 | { | |
2121 | unsigned char byte = 0; | |
2122 | ||
2123 | /* Return failure if memory read fails. */ | |
2124 | if (read_inferior_memory (base, &byte, 1) != 0) | |
2125 | return (unsigned long long) -1; | |
2126 | ||
65da7f14 | 2127 | crc = xcrc32 (&byte, 1, crc); |
30ba68cb MS |
2128 | base++; |
2129 | } | |
2130 | return (unsigned long long) crc; | |
2131 | } | |
2132 | ||
043c3577 MM |
2133 | /* Add supported btrace packets to BUF. */ |
2134 | ||
2135 | static void | |
2136 | supported_btrace_packets (char *buf) | |
2137 | { | |
b20a6524 MM |
2138 | int btrace_supported = 0; |
2139 | ||
043c3577 | 2140 | if (target_supports_btrace (BTRACE_FORMAT_BTS)) |
d33501a5 MM |
2141 | { |
2142 | strcat (buf, ";Qbtrace:bts+"); | |
2143 | strcat (buf, ";Qbtrace-conf:bts:size+"); | |
b20a6524 MM |
2144 | |
2145 | btrace_supported = 1; | |
d33501a5 | 2146 | } |
b20a6524 MM |
2147 | |
2148 | if (target_supports_btrace (BTRACE_FORMAT_PT)) | |
2149 | { | |
2150 | strcat (buf, ";Qbtrace:pt+"); | |
2151 | strcat (buf, ";Qbtrace-conf:pt:size+"); | |
2152 | ||
2153 | btrace_supported = 1; | |
2154 | } | |
2155 | ||
2156 | if (!btrace_supported) | |
043c3577 MM |
2157 | return; |
2158 | ||
2159 | strcat (buf, ";Qbtrace:off+"); | |
2160 | strcat (buf, ";qXfer:btrace:read+"); | |
f4abbc16 | 2161 | strcat (buf, ";qXfer:btrace-conf:read+"); |
043c3577 MM |
2162 | } |
2163 | ||
ce3a066d | 2164 | /* Handle all of the extended 'q' packets. */ |
d08aafef | 2165 | |
5b3da067 | 2166 | static void |
0e7f50da | 2167 | handle_query (char *own_buf, int packet_len, int *new_packet_len_p) |
ce3a066d | 2168 | { |
0d62e5e8 DJ |
2169 | static struct inferior_list_entry *thread_ptr; |
2170 | ||
bb63802a | 2171 | /* Reply the current thread id. */ |
db42f210 | 2172 | if (strcmp ("qC", own_buf) == 0 && !disable_packet_qC) |
bb63802a | 2173 | { |
95954743 | 2174 | ptid_t gdb_id; |
f8a4e119 | 2175 | require_running_or_return (own_buf); |
bd99dc85 | 2176 | |
95954743 PA |
2177 | if (!ptid_equal (general_thread, null_ptid) |
2178 | && !ptid_equal (general_thread, minus_one_ptid)) | |
bd99dc85 PA |
2179 | gdb_id = general_thread; |
2180 | else | |
2181 | { | |
649ebbca | 2182 | thread_ptr = get_first_inferior (&all_threads); |
bd99dc85 PA |
2183 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); |
2184 | } | |
2185 | ||
95954743 PA |
2186 | sprintf (own_buf, "QC"); |
2187 | own_buf += 2; | |
4b812f4e | 2188 | write_ptid (own_buf, gdb_id); |
bb63802a UW |
2189 | return; |
2190 | } | |
2191 | ||
ce3a066d DJ |
2192 | if (strcmp ("qSymbol::", own_buf) == 0) |
2193 | { | |
34c65914 PA |
2194 | struct thread_info *save_thread = current_thread; |
2195 | ||
2196 | /* For qSymbol, GDB only changes the current thread if the | |
2197 | previous current thread was of a different process. So if | |
2198 | the previous thread is gone, we need to pick another one of | |
2199 | the same process. This can happen e.g., if we followed an | |
2200 | exec in a non-leader thread. */ | |
2201 | if (current_thread == NULL) | |
2202 | { | |
2203 | current_thread | |
2204 | = find_any_thread_of_pid (ptid_get_pid (general_thread)); | |
2205 | ||
2206 | /* Just in case, if we didn't find a thread, then bail out | |
2207 | instead of crashing. */ | |
2208 | if (current_thread == NULL) | |
2209 | { | |
2210 | write_enn (own_buf); | |
2211 | current_thread = save_thread; | |
2212 | return; | |
2213 | } | |
2214 | } | |
2215 | ||
d3bbe7a0 PA |
2216 | /* GDB is suggesting new symbols have been loaded. This may |
2217 | mean a new shared library has been detected as loaded, so | |
2218 | take the opportunity to check if breakpoints we think are | |
2219 | inserted, still are. Note that it isn't guaranteed that | |
2220 | we'll see this when a shared library is loaded, and nor will | |
2221 | we see this for unloads (although breakpoints in unloaded | |
2222 | libraries shouldn't trigger), as GDB may not find symbols for | |
2223 | the library at all. We also re-validate breakpoints when we | |
2224 | see a second GDB breakpoint for the same address, and or when | |
2225 | we access breakpoint shadows. */ | |
2226 | validate_breakpoints (); | |
2227 | ||
fa593d66 PA |
2228 | if (target_supports_tracepoints ()) |
2229 | tracepoint_look_up_symbols (); | |
2230 | ||
f0db101d | 2231 | if (current_thread != NULL && the_target->look_up_symbols != NULL) |
2f2893d9 DJ |
2232 | (*the_target->look_up_symbols) (); |
2233 | ||
34c65914 PA |
2234 | current_thread = save_thread; |
2235 | ||
ce3a066d DJ |
2236 | strcpy (own_buf, "OK"); |
2237 | return; | |
2238 | } | |
2239 | ||
db42f210 | 2240 | if (!disable_packet_qfThreadInfo) |
0d62e5e8 | 2241 | { |
db42f210 | 2242 | if (strcmp ("qfThreadInfo", own_buf) == 0) |
0d62e5e8 | 2243 | { |
95954743 PA |
2244 | ptid_t gdb_id; |
2245 | ||
f8a4e119 | 2246 | require_running_or_return (own_buf); |
649ebbca | 2247 | thread_ptr = get_first_inferior (&all_threads); |
95954743 PA |
2248 | |
2249 | *own_buf++ = 'm'; | |
2250 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
2251 | write_ptid (own_buf, gdb_id); | |
0d62e5e8 DJ |
2252 | thread_ptr = thread_ptr->next; |
2253 | return; | |
2254 | } | |
db42f210 PA |
2255 | |
2256 | if (strcmp ("qsThreadInfo", own_buf) == 0) | |
0d62e5e8 | 2257 | { |
95954743 PA |
2258 | ptid_t gdb_id; |
2259 | ||
f8a4e119 | 2260 | require_running_or_return (own_buf); |
db42f210 PA |
2261 | if (thread_ptr != NULL) |
2262 | { | |
95954743 PA |
2263 | *own_buf++ = 'm'; |
2264 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); | |
2265 | write_ptid (own_buf, gdb_id); | |
db42f210 PA |
2266 | thread_ptr = thread_ptr->next; |
2267 | return; | |
2268 | } | |
2269 | else | |
2270 | { | |
2271 | sprintf (own_buf, "l"); | |
2272 | return; | |
2273 | } | |
0d62e5e8 DJ |
2274 | } |
2275 | } | |
aa691b87 | 2276 | |
52fb6437 NS |
2277 | if (the_target->read_offsets != NULL |
2278 | && strcmp ("qOffsets", own_buf) == 0) | |
2279 | { | |
2280 | CORE_ADDR text, data; | |
2d717e4f | 2281 | |
f8a4e119 | 2282 | require_running_or_return (own_buf); |
52fb6437 NS |
2283 | if (the_target->read_offsets (&text, &data)) |
2284 | sprintf (own_buf, "Text=%lX;Data=%lX;Bss=%lX", | |
2285 | (long)text, (long)data, (long)data); | |
2286 | else | |
2287 | write_enn (own_buf); | |
1b3f6016 | 2288 | |
52fb6437 NS |
2289 | return; |
2290 | } | |
2291 | ||
be2a5f71 | 2292 | /* Protocol features query. */ |
61012eef | 2293 | if (startswith (own_buf, "qSupported") |
be2a5f71 DJ |
2294 | && (own_buf[10] == ':' || own_buf[10] == '\0')) |
2295 | { | |
95954743 | 2296 | char *p = &own_buf[10]; |
fa593d66 | 2297 | int gdb_supports_qRelocInsn = 0; |
95954743 PA |
2298 | |
2299 | /* Process each feature being provided by GDB. The first | |
2300 | feature will follow a ':', and latter features will follow | |
2301 | ';'. */ | |
2302 | if (*p == ':') | |
d149dd1d PA |
2303 | { |
2304 | char **qsupported = NULL; | |
2305 | int count = 0; | |
06e03fff | 2306 | int unknown = 0; |
d149dd1d PA |
2307 | int i; |
2308 | ||
2309 | /* Two passes, to avoid nested strtok calls in | |
2310 | target_process_qsupported. */ | |
2311 | for (p = strtok (p + 1, ";"); | |
2312 | p != NULL; | |
2313 | p = strtok (NULL, ";")) | |
2314 | { | |
2315 | count++; | |
224c3ddb | 2316 | qsupported = XRESIZEVEC (char *, qsupported, count); |
d149dd1d PA |
2317 | qsupported[count - 1] = xstrdup (p); |
2318 | } | |
2319 | ||
2320 | for (i = 0; i < count; i++) | |
2321 | { | |
2322 | p = qsupported[i]; | |
2323 | if (strcmp (p, "multiprocess+") == 0) | |
2324 | { | |
2325 | /* GDB supports and wants multi-process support if | |
2326 | possible. */ | |
2327 | if (target_supports_multi_process ()) | |
2328 | multi_process = 1; | |
2329 | } | |
fa593d66 PA |
2330 | else if (strcmp (p, "qRelocInsn+") == 0) |
2331 | { | |
2332 | /* GDB supports relocate instruction requests. */ | |
2333 | gdb_supports_qRelocInsn = 1; | |
2334 | } | |
1ec68e26 PA |
2335 | else if (strcmp (p, "swbreak+") == 0) |
2336 | { | |
2337 | /* GDB wants us to report whether a trap is caused | |
2338 | by a software breakpoint and for us to handle PC | |
2339 | adjustment if necessary on this target. */ | |
2340 | if (target_supports_stopped_by_sw_breakpoint ()) | |
2341 | swbreak_feature = 1; | |
2342 | } | |
2343 | else if (strcmp (p, "hwbreak+") == 0) | |
2344 | { | |
2345 | /* GDB wants us to report whether a trap is caused | |
2346 | by a hardware breakpoint. */ | |
2347 | if (target_supports_stopped_by_hw_breakpoint ()) | |
2348 | hwbreak_feature = 1; | |
2349 | } | |
89245bc0 DB |
2350 | else if (strcmp (p, "fork-events+") == 0) |
2351 | { | |
2352 | /* GDB supports and wants fork events if possible. */ | |
2353 | if (target_supports_fork_events ()) | |
2354 | report_fork_events = 1; | |
2355 | } | |
2356 | else if (strcmp (p, "vfork-events+") == 0) | |
2357 | { | |
2358 | /* GDB supports and wants vfork events if possible. */ | |
2359 | if (target_supports_vfork_events ()) | |
2360 | report_vfork_events = 1; | |
2361 | } | |
7c5d0fad | 2362 | else if (strcmp (p, "exec-events+") == 0) |
94585166 DB |
2363 | { |
2364 | /* GDB supports and wants exec events if possible. */ | |
2365 | if (target_supports_exec_events ()) | |
2366 | report_exec_events = 1; | |
2367 | } | |
750ce8d1 YQ |
2368 | else if (strcmp (p, "vContSupported+") == 0) |
2369 | vCont_supported = 1; | |
65706a29 PA |
2370 | else if (strcmp (p, "QThreadEvents+") == 0) |
2371 | ; | |
f2faf941 PA |
2372 | else if (strcmp (p, "no-resumed+") == 0) |
2373 | { | |
2374 | /* GDB supports and wants TARGET_WAITKIND_NO_RESUMED | |
2375 | events. */ | |
2376 | report_no_resumed = 1; | |
2377 | } | |
d149dd1d | 2378 | else |
06e03fff PA |
2379 | { |
2380 | /* Move the unknown features all together. */ | |
2381 | qsupported[i] = NULL; | |
2382 | qsupported[unknown] = p; | |
2383 | unknown++; | |
2384 | } | |
d149dd1d PA |
2385 | } |
2386 | ||
06e03fff PA |
2387 | /* Give the target backend a chance to process the unknown |
2388 | features. */ | |
2389 | target_process_qsupported (qsupported, unknown); | |
2390 | ||
2391 | for (i = 0; i < count; i++) | |
2392 | free (qsupported[i]); | |
d149dd1d PA |
2393 | free (qsupported); |
2394 | } | |
95954743 | 2395 | |
9b224c5e | 2396 | sprintf (own_buf, |
0a2dde4a SDJ |
2397 | "PacketSize=%x;QPassSignals+;QProgramSignals+;" |
2398 | "QStartupWithShell+;QEnvironmentHexEncoded+;" | |
2399 | "QEnvironmentReset+;QEnvironmentUnset+", | |
9b224c5e | 2400 | PBUFSIZ - 1); |
0876f84a | 2401 | |
82075af2 JS |
2402 | if (target_supports_catch_syscall ()) |
2403 | strcat (own_buf, ";QCatchSyscalls+"); | |
2404 | ||
2268b414 | 2405 | if (the_target->qxfer_libraries_svr4 != NULL) |
b1fbec62 GB |
2406 | strcat (own_buf, ";qXfer:libraries-svr4:read+" |
2407 | ";augmented-libraries-svr4-read+"); | |
2268b414 JK |
2408 | else |
2409 | { | |
2410 | /* We do not have any hook to indicate whether the non-SVR4 target | |
2411 | backend supports qXfer:libraries:read, so always report it. */ | |
2412 | strcat (own_buf, ";qXfer:libraries:read+"); | |
2413 | } | |
255e7678 | 2414 | |
0876f84a | 2415 | if (the_target->read_auxv != NULL) |
9f2e1e63 | 2416 | strcat (own_buf, ";qXfer:auxv:read+"); |
2d717e4f | 2417 | |
0e7f50da UW |
2418 | if (the_target->qxfer_spu != NULL) |
2419 | strcat (own_buf, ";qXfer:spu:read+;qXfer:spu:write+"); | |
0876f84a | 2420 | |
4aa995e1 PA |
2421 | if (the_target->qxfer_siginfo != NULL) |
2422 | strcat (own_buf, ";qXfer:siginfo:read+;qXfer:siginfo:write+"); | |
2423 | ||
78d85199 YQ |
2424 | if (the_target->read_loadmap != NULL) |
2425 | strcat (own_buf, ";qXfer:fdpic:read+"); | |
2426 | ||
221c031f UW |
2427 | /* We always report qXfer:features:read, as targets may |
2428 | install XML files on a subsequent call to arch_setup. | |
2429 | If we reported to GDB on startup that we don't support | |
2430 | qXfer:feature:read at all, we will never be re-queried. */ | |
2431 | strcat (own_buf, ";qXfer:features:read+"); | |
23181151 | 2432 | |
a6f3e723 SL |
2433 | if (transport_is_reliable) |
2434 | strcat (own_buf, ";QStartNoAckMode+"); | |
07e059b5 VP |
2435 | |
2436 | if (the_target->qxfer_osdata != NULL) | |
1b3f6016 | 2437 | strcat (own_buf, ";qXfer:osdata:read+"); |
07e059b5 | 2438 | |
cf8fd78b PA |
2439 | if (target_supports_multi_process ()) |
2440 | strcat (own_buf, ";multiprocess+"); | |
95954743 | 2441 | |
89245bc0 DB |
2442 | if (target_supports_fork_events ()) |
2443 | strcat (own_buf, ";fork-events+"); | |
2444 | ||
2445 | if (target_supports_vfork_events ()) | |
2446 | strcat (own_buf, ";vfork-events+"); | |
2447 | ||
94585166 DB |
2448 | if (target_supports_exec_events ()) |
2449 | strcat (own_buf, ";exec-events+"); | |
2450 | ||
bd99dc85 PA |
2451 | if (target_supports_non_stop ()) |
2452 | strcat (own_buf, ";QNonStop+"); | |
2453 | ||
03583c20 UW |
2454 | if (target_supports_disable_randomization ()) |
2455 | strcat (own_buf, ";QDisableRandomization+"); | |
2456 | ||
dc146f7c VP |
2457 | strcat (own_buf, ";qXfer:threads:read+"); |
2458 | ||
219f2f23 PA |
2459 | if (target_supports_tracepoints ()) |
2460 | { | |
2461 | strcat (own_buf, ";ConditionalTracepoints+"); | |
2462 | strcat (own_buf, ";TraceStateVariables+"); | |
2463 | strcat (own_buf, ";TracepointSource+"); | |
8336d594 | 2464 | strcat (own_buf, ";DisconnectedTracing+"); |
fa593d66 PA |
2465 | if (gdb_supports_qRelocInsn && target_supports_fast_tracepoints ()) |
2466 | strcat (own_buf, ";FastTracepoints+"); | |
0fb4aa4b | 2467 | strcat (own_buf, ";StaticTracepoints+"); |
1e4d1764 | 2468 | strcat (own_buf, ";InstallInTrace+"); |
0fb4aa4b | 2469 | strcat (own_buf, ";qXfer:statictrace:read+"); |
b3b9301e | 2470 | strcat (own_buf, ";qXfer:traceframe-info:read+"); |
d248b706 | 2471 | strcat (own_buf, ";EnableDisableTracepoints+"); |
f6f899bf | 2472 | strcat (own_buf, ";QTBuffer:size+"); |
3065dfb6 | 2473 | strcat (own_buf, ";tracenz+"); |
219f2f23 PA |
2474 | } |
2475 | ||
bd2b2909 AT |
2476 | if (target_supports_hardware_single_step () |
2477 | || target_supports_software_single_step () ) | |
70b90b91 | 2478 | { |
70b90b91 YQ |
2479 | strcat (own_buf, ";ConditionalBreakpoints+"); |
2480 | } | |
d3ce09f5 | 2481 | strcat (own_buf, ";BreakpointCommands+"); |
9f3a5c85 | 2482 | |
d1feda86 YQ |
2483 | if (target_supports_agent ()) |
2484 | strcat (own_buf, ";QAgent+"); | |
2485 | ||
043c3577 | 2486 | supported_btrace_packets (own_buf); |
9accd112 | 2487 | |
1ec68e26 PA |
2488 | if (target_supports_stopped_by_sw_breakpoint ()) |
2489 | strcat (own_buf, ";swbreak+"); | |
2490 | ||
2491 | if (target_supports_stopped_by_hw_breakpoint ()) | |
2492 | strcat (own_buf, ";hwbreak+"); | |
2493 | ||
e57f1de3 GB |
2494 | if (the_target->pid_to_exec_file != NULL) |
2495 | strcat (own_buf, ";qXfer:exec-file:read+"); | |
2496 | ||
750ce8d1 YQ |
2497 | strcat (own_buf, ";vContSupported+"); |
2498 | ||
65706a29 PA |
2499 | strcat (own_buf, ";QThreadEvents+"); |
2500 | ||
f2faf941 PA |
2501 | strcat (own_buf, ";no-resumed+"); |
2502 | ||
14d2069a GB |
2503 | /* Reinitialize components as needed for the new connection. */ |
2504 | hostio_handle_new_gdb_connection (); | |
de0d863e DB |
2505 | target_handle_new_gdb_connection (); |
2506 | ||
be2a5f71 DJ |
2507 | return; |
2508 | } | |
2509 | ||
dae5f5cf DJ |
2510 | /* Thread-local storage support. */ |
2511 | if (the_target->get_tls_address != NULL | |
61012eef | 2512 | && startswith (own_buf, "qGetTLSAddr:")) |
dae5f5cf DJ |
2513 | { |
2514 | char *p = own_buf + 12; | |
5b1c542e | 2515 | CORE_ADDR parts[2], address = 0; |
dae5f5cf | 2516 | int i, err; |
95954743 | 2517 | ptid_t ptid = null_ptid; |
dae5f5cf | 2518 | |
f8a4e119 | 2519 | require_running_or_return (own_buf); |
2d717e4f | 2520 | |
dae5f5cf DJ |
2521 | for (i = 0; i < 3; i++) |
2522 | { | |
2523 | char *p2; | |
2524 | int len; | |
2525 | ||
2526 | if (p == NULL) | |
2527 | break; | |
2528 | ||
2529 | p2 = strchr (p, ','); | |
2530 | if (p2) | |
2531 | { | |
2532 | len = p2 - p; | |
2533 | p2++; | |
2534 | } | |
2535 | else | |
2536 | { | |
2537 | len = strlen (p); | |
2538 | p2 = NULL; | |
2539 | } | |
2540 | ||
5b1c542e | 2541 | if (i == 0) |
95954743 | 2542 | ptid = read_ptid (p, NULL); |
5b1c542e PA |
2543 | else |
2544 | decode_address (&parts[i - 1], p, len); | |
dae5f5cf DJ |
2545 | p = p2; |
2546 | } | |
2547 | ||
2548 | if (p != NULL || i < 3) | |
2549 | err = 1; | |
2550 | else | |
2551 | { | |
e09875d4 | 2552 | struct thread_info *thread = find_thread_ptid (ptid); |
dae5f5cf DJ |
2553 | |
2554 | if (thread == NULL) | |
2555 | err = 2; | |
2556 | else | |
5b1c542e | 2557 | err = the_target->get_tls_address (thread, parts[0], parts[1], |
dae5f5cf DJ |
2558 | &address); |
2559 | } | |
2560 | ||
2561 | if (err == 0) | |
2562 | { | |
c6f46ca0 | 2563 | strcpy (own_buf, paddress(address)); |
dae5f5cf DJ |
2564 | return; |
2565 | } | |
2566 | else if (err > 0) | |
2567 | { | |
2568 | write_enn (own_buf); | |
2569 | return; | |
2570 | } | |
2571 | ||
2572 | /* Otherwise, pretend we do not understand this packet. */ | |
2573 | } | |
2574 | ||
711e434b PM |
2575 | /* Windows OS Thread Information Block address support. */ |
2576 | if (the_target->get_tib_address != NULL | |
61012eef | 2577 | && startswith (own_buf, "qGetTIBAddr:")) |
711e434b PM |
2578 | { |
2579 | char *annex; | |
2580 | int n; | |
2581 | CORE_ADDR tlb; | |
2582 | ptid_t ptid = read_ptid (own_buf + 12, &annex); | |
2583 | ||
2584 | n = (*the_target->get_tib_address) (ptid, &tlb); | |
2585 | if (n == 1) | |
2586 | { | |
c6f46ca0 | 2587 | strcpy (own_buf, paddress(tlb)); |
711e434b PM |
2588 | return; |
2589 | } | |
2590 | else if (n == 0) | |
2591 | { | |
2592 | write_enn (own_buf); | |
2593 | return; | |
2594 | } | |
2595 | return; | |
2596 | } | |
2597 | ||
c74d0ad8 | 2598 | /* Handle "monitor" commands. */ |
61012eef | 2599 | if (startswith (own_buf, "qRcmd,")) |
c74d0ad8 | 2600 | { |
224c3ddb | 2601 | char *mon = (char *) malloc (PBUFSIZ); |
c74d0ad8 DJ |
2602 | int len = strlen (own_buf + 6); |
2603 | ||
aef93bd7 DE |
2604 | if (mon == NULL) |
2605 | { | |
2606 | write_enn (own_buf); | |
2607 | return; | |
2608 | } | |
2609 | ||
ff0e980e TT |
2610 | if ((len % 2) != 0 |
2611 | || hex2bin (own_buf + 6, (gdb_byte *) mon, len / 2) != len / 2) | |
c74d0ad8 DJ |
2612 | { |
2613 | write_enn (own_buf); | |
2614 | free (mon); | |
2615 | return; | |
2616 | } | |
2617 | mon[len / 2] = '\0'; | |
2618 | ||
2619 | write_ok (own_buf); | |
2620 | ||
cdbfd419 PP |
2621 | if (the_target->handle_monitor_command == NULL |
2622 | || (*the_target->handle_monitor_command) (mon) == 0) | |
2623 | /* Default processing. */ | |
d73f2619 | 2624 | handle_monitor_command (mon, own_buf); |
c74d0ad8 DJ |
2625 | |
2626 | free (mon); | |
2627 | return; | |
2628 | } | |
2629 | ||
61012eef | 2630 | if (startswith (own_buf, "qSearch:memory:")) |
08388c79 | 2631 | { |
f8a4e119 | 2632 | require_running_or_return (own_buf); |
08388c79 DE |
2633 | handle_search_memory (own_buf, packet_len); |
2634 | return; | |
2635 | } | |
2636 | ||
95954743 | 2637 | if (strcmp (own_buf, "qAttached") == 0 |
61012eef | 2638 | || startswith (own_buf, "qAttached:")) |
0b16c5cf | 2639 | { |
95954743 PA |
2640 | struct process_info *process; |
2641 | ||
2642 | if (own_buf[sizeof ("qAttached") - 1]) | |
2643 | { | |
2644 | int pid = strtoul (own_buf + sizeof ("qAttached:") - 1, NULL, 16); | |
2645 | process = (struct process_info *) | |
2646 | find_inferior_id (&all_processes, pid_to_ptid (pid)); | |
2647 | } | |
2648 | else | |
2649 | { | |
f8a4e119 | 2650 | require_running_or_return (own_buf); |
95954743 PA |
2651 | process = current_process (); |
2652 | } | |
2653 | ||
2654 | if (process == NULL) | |
2655 | { | |
2656 | write_enn (own_buf); | |
2657 | return; | |
2658 | } | |
2659 | ||
2660 | strcpy (own_buf, process->attached ? "1" : "0"); | |
0b16c5cf PA |
2661 | return; |
2662 | } | |
2663 | ||
61012eef | 2664 | if (startswith (own_buf, "qCRC:")) |
30ba68cb MS |
2665 | { |
2666 | /* CRC check (compare-section). */ | |
2667 | char *comma; | |
aca22551 | 2668 | ULONGEST base; |
30ba68cb MS |
2669 | int len; |
2670 | unsigned long long crc; | |
2671 | ||
f8a4e119 | 2672 | require_running_or_return (own_buf); |
aca22551 | 2673 | comma = unpack_varlen_hex (own_buf + 5, &base); |
30ba68cb MS |
2674 | if (*comma++ != ',') |
2675 | { | |
2676 | write_enn (own_buf); | |
2677 | return; | |
2678 | } | |
2679 | len = strtoul (comma, NULL, 16); | |
2680 | crc = crc32 (base, len, 0xffffffff); | |
2681 | /* Check for memory failure. */ | |
2682 | if (crc == (unsigned long long) -1) | |
2683 | { | |
2684 | write_enn (own_buf); | |
2685 | return; | |
2686 | } | |
2687 | sprintf (own_buf, "C%lx", (unsigned long) crc); | |
2688 | return; | |
2689 | } | |
2690 | ||
d08aafef PA |
2691 | if (handle_qxfer (own_buf, packet_len, new_packet_len_p)) |
2692 | return; | |
2693 | ||
219f2f23 PA |
2694 | if (target_supports_tracepoints () && handle_tracepoint_query (own_buf)) |
2695 | return; | |
2696 | ||
ce3a066d DJ |
2697 | /* Otherwise we didn't know what packet it was. Say we didn't |
2698 | understand it. */ | |
2699 | own_buf[0] = 0; | |
2700 | } | |
2701 | ||
ce1a5b52 | 2702 | static void gdb_wants_all_threads_stopped (void); |
b7ea362b PA |
2703 | static void resume (struct thread_resume *actions, size_t n); |
2704 | ||
649ebbca DE |
2705 | /* The callback that is passed to visit_actioned_threads. */ |
2706 | typedef int (visit_actioned_threads_callback_ftype) | |
2707 | (const struct thread_resume *, struct thread_info *); | |
2708 | ||
2709 | /* Struct to pass data to visit_actioned_threads. */ | |
2710 | ||
2711 | struct visit_actioned_threads_data | |
2712 | { | |
2713 | const struct thread_resume *actions; | |
2714 | size_t num_actions; | |
2715 | visit_actioned_threads_callback_ftype *callback; | |
2716 | }; | |
2717 | ||
b7ea362b PA |
2718 | /* Call CALLBACK for any thread to which ACTIONS applies to. Returns |
2719 | true if CALLBACK returns true. Returns false if no matching thread | |
649ebbca DE |
2720 | is found or CALLBACK results false. |
2721 | Note: This function is itself a callback for find_inferior. */ | |
b7ea362b PA |
2722 | |
2723 | static int | |
649ebbca | 2724 | visit_actioned_threads (struct inferior_list_entry *entry, void *datap) |
b7ea362b | 2725 | { |
9a3c8263 SM |
2726 | struct visit_actioned_threads_data *data |
2727 | = (struct visit_actioned_threads_data *) datap; | |
649ebbca DE |
2728 | const struct thread_resume *actions = data->actions; |
2729 | size_t num_actions = data->num_actions; | |
2730 | visit_actioned_threads_callback_ftype *callback = data->callback; | |
2731 | size_t i; | |
b7ea362b | 2732 | |
649ebbca | 2733 | for (i = 0; i < num_actions; i++) |
b7ea362b | 2734 | { |
649ebbca | 2735 | const struct thread_resume *action = &actions[i]; |
b7ea362b | 2736 | |
649ebbca DE |
2737 | if (ptid_equal (action->thread, minus_one_ptid) |
2738 | || ptid_equal (action->thread, entry->id) | |
2739 | || ((ptid_get_pid (action->thread) | |
2740 | == ptid_get_pid (entry->id)) | |
2741 | && ptid_get_lwp (action->thread) == -1)) | |
b7ea362b | 2742 | { |
649ebbca | 2743 | struct thread_info *thread = (struct thread_info *) entry; |
b7ea362b | 2744 | |
649ebbca DE |
2745 | if ((*callback) (action, thread)) |
2746 | return 1; | |
b7ea362b PA |
2747 | } |
2748 | } | |
2749 | ||
2750 | return 0; | |
2751 | } | |
2752 | ||
2753 | /* Callback for visit_actioned_threads. If the thread has a pending | |
2754 | status to report, report it now. */ | |
2755 | ||
2756 | static int | |
2757 | handle_pending_status (const struct thread_resume *resumption, | |
2758 | struct thread_info *thread) | |
2759 | { | |
2760 | if (thread->status_pending_p) | |
2761 | { | |
2762 | thread->status_pending_p = 0; | |
2763 | ||
2764 | last_status = thread->last_status; | |
2765 | last_ptid = thread->entry.id; | |
2766 | prepare_resume_reply (own_buf, last_ptid, &last_status); | |
2767 | return 1; | |
2768 | } | |
2769 | return 0; | |
2770 | } | |
ce1a5b52 | 2771 | |
64386c31 | 2772 | /* Parse vCont packets. */ |
5b3da067 | 2773 | static void |
5b1c542e | 2774 | handle_v_cont (char *own_buf) |
64386c31 DJ |
2775 | { |
2776 | char *p, *q; | |
2777 | int n = 0, i = 0; | |
2bd7c093 | 2778 | struct thread_resume *resume_info; |
436252de | 2779 | struct thread_resume default_action { null_ptid }; |
64386c31 DJ |
2780 | |
2781 | /* Count the number of semicolons in the packet. There should be one | |
2782 | for every action. */ | |
2783 | p = &own_buf[5]; | |
2784 | while (p) | |
2785 | { | |
2786 | n++; | |
2787 | p++; | |
2788 | p = strchr (p, ';'); | |
2789 | } | |
2bd7c093 | 2790 | |
224c3ddb | 2791 | resume_info = (struct thread_resume *) malloc (n * sizeof (resume_info[0])); |
aef93bd7 DE |
2792 | if (resume_info == NULL) |
2793 | goto err; | |
64386c31 | 2794 | |
64386c31 | 2795 | p = &own_buf[5]; |
64386c31 DJ |
2796 | while (*p) |
2797 | { | |
2798 | p++; | |
2799 | ||
c2d6af84 PA |
2800 | memset (&resume_info[i], 0, sizeof resume_info[i]); |
2801 | ||
64386c31 | 2802 | if (p[0] == 's' || p[0] == 'S') |
bd99dc85 | 2803 | resume_info[i].kind = resume_step; |
c2d6af84 PA |
2804 | else if (p[0] == 'r') |
2805 | resume_info[i].kind = resume_step; | |
64386c31 | 2806 | else if (p[0] == 'c' || p[0] == 'C') |
bd99dc85 PA |
2807 | resume_info[i].kind = resume_continue; |
2808 | else if (p[0] == 't') | |
2809 | resume_info[i].kind = resume_stop; | |
64386c31 DJ |
2810 | else |
2811 | goto err; | |
2812 | ||
2813 | if (p[0] == 'S' || p[0] == 'C') | |
2814 | { | |
2815 | int sig; | |
2816 | sig = strtol (p + 1, &q, 16); | |
2817 | if (p == q) | |
2818 | goto err; | |
2819 | p = q; | |
2820 | ||
e053fbc4 | 2821 | if (!gdb_signal_to_host_p ((enum gdb_signal) sig)) |
64386c31 | 2822 | goto err; |
e053fbc4 | 2823 | resume_info[i].sig = gdb_signal_to_host ((enum gdb_signal) sig); |
64386c31 | 2824 | } |
c2d6af84 PA |
2825 | else if (p[0] == 'r') |
2826 | { | |
6740dc9c | 2827 | ULONGEST addr; |
c2d6af84 | 2828 | |
6740dc9c PA |
2829 | p = unpack_varlen_hex (p + 1, &addr); |
2830 | resume_info[i].step_range_start = addr; | |
c2d6af84 | 2831 | |
6740dc9c PA |
2832 | if (*p != ',') |
2833 | goto err; | |
c2d6af84 | 2834 | |
6740dc9c PA |
2835 | p = unpack_varlen_hex (p + 1, &addr); |
2836 | resume_info[i].step_range_end = addr; | |
c2d6af84 | 2837 | } |
64386c31 DJ |
2838 | else |
2839 | { | |
64386c31 DJ |
2840 | p = p + 1; |
2841 | } | |
2842 | ||
2843 | if (p[0] == 0) | |
2844 | { | |
95954743 | 2845 | resume_info[i].thread = minus_one_ptid; |
64386c31 DJ |
2846 | default_action = resume_info[i]; |
2847 | ||
2848 | /* Note: we don't increment i here, we'll overwrite this entry | |
2849 | the next time through. */ | |
2850 | } | |
2851 | else if (p[0] == ':') | |
2852 | { | |
95954743 | 2853 | ptid_t ptid = read_ptid (p + 1, &q); |
a06660f7 | 2854 | |
64386c31 DJ |
2855 | if (p == q) |
2856 | goto err; | |
2857 | p = q; | |
2858 | if (p[0] != ';' && p[0] != 0) | |
2859 | goto err; | |
2860 | ||
95954743 | 2861 | resume_info[i].thread = ptid; |
a06660f7 | 2862 | |
64386c31 DJ |
2863 | i++; |
2864 | } | |
2865 | } | |
2866 | ||
2bd7c093 PA |
2867 | if (i < n) |
2868 | resume_info[i] = default_action; | |
64386c31 | 2869 | |
b7ea362b PA |
2870 | resume (resume_info, n); |
2871 | free (resume_info); | |
2872 | return; | |
2873 | ||
2874 | err: | |
2875 | write_enn (own_buf); | |
2876 | free (resume_info); | |
2877 | return; | |
2878 | } | |
2879 | ||
2880 | /* Resume target with ACTIONS, an array of NUM_ACTIONS elements. */ | |
2881 | ||
2882 | static void | |
2883 | resume (struct thread_resume *actions, size_t num_actions) | |
2884 | { | |
bd99dc85 | 2885 | if (!non_stop) |
b7ea362b PA |
2886 | { |
2887 | /* Check if among the threads that GDB wants actioned, there's | |
2888 | one with a pending status to report. If so, skip actually | |
2889 | resuming/stopping and report the pending event | |
2890 | immediately. */ | |
649ebbca DE |
2891 | struct visit_actioned_threads_data data; |
2892 | ||
2893 | data.actions = actions; | |
2894 | data.num_actions = num_actions; | |
2895 | data.callback = handle_pending_status; | |
2896 | if (find_inferior (&all_threads, visit_actioned_threads, &data) != NULL) | |
b7ea362b | 2897 | return; |
bd99dc85 | 2898 | |
b7ea362b PA |
2899 | enable_async_io (); |
2900 | } | |
64386c31 | 2901 | |
b7ea362b | 2902 | (*the_target->resume) (actions, num_actions); |
64386c31 | 2903 | |
bd99dc85 PA |
2904 | if (non_stop) |
2905 | write_ok (own_buf); | |
2906 | else | |
2907 | { | |
95954743 | 2908 | last_ptid = mywait (minus_one_ptid, &last_status, 0, 1); |
ce1a5b52 | 2909 | |
f2faf941 PA |
2910 | if (last_status.kind == TARGET_WAITKIND_NO_RESUMED |
2911 | && !report_no_resumed) | |
fa96cb38 | 2912 | { |
f2faf941 PA |
2913 | /* The client does not support this stop reply. At least |
2914 | return error. */ | |
fa96cb38 PA |
2915 | sprintf (own_buf, "E.No unwaited-for children left."); |
2916 | disable_async_io (); | |
2917 | return; | |
2918 | } | |
2919 | ||
d20a8ad9 | 2920 | if (last_status.kind != TARGET_WAITKIND_EXITED |
fa96cb38 PA |
2921 | && last_status.kind != TARGET_WAITKIND_SIGNALLED |
2922 | && last_status.kind != TARGET_WAITKIND_NO_RESUMED) | |
0bfdf32f | 2923 | current_thread->last_status = last_status; |
d20a8ad9 | 2924 | |
ce1a5b52 PA |
2925 | /* From the client's perspective, all-stop mode always stops all |
2926 | threads implicitly (and the target backend has already done | |
2927 | so by now). Tag all threads as "want-stopped", so we don't | |
2928 | resume them implicitly without the client telling us to. */ | |
2929 | gdb_wants_all_threads_stopped (); | |
bd99dc85 PA |
2930 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
2931 | disable_async_io (); | |
6bd31874 JB |
2932 | |
2933 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
2934 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
bc1e6c81 | 2935 | target_mourn_inferior (last_ptid); |
bd99dc85 | 2936 | } |
64386c31 DJ |
2937 | } |
2938 | ||
2d717e4f | 2939 | /* Attach to a new program. Return 1 if successful, 0 if failure. */ |
5b3da067 | 2940 | static int |
5b1c542e | 2941 | handle_v_attach (char *own_buf) |
2d717e4f DJ |
2942 | { |
2943 | int pid; | |
2944 | ||
2945 | pid = strtol (own_buf + 8, NULL, 16); | |
5b1c542e | 2946 | if (pid != 0 && attach_inferior (pid) == 0) |
2d717e4f | 2947 | { |
aeba519e PA |
2948 | /* Don't report shared library events after attaching, even if |
2949 | some libraries are preloaded. GDB will always poll the | |
2950 | library list. Avoids the "stopped by shared library event" | |
2951 | notice on the GDB side. */ | |
2952 | dlls_changed = 0; | |
bd99dc85 PA |
2953 | |
2954 | if (non_stop) | |
2955 | { | |
2956 | /* In non-stop, we don't send a resume reply. Stop events | |
2957 | will follow up using the normal notification | |
2958 | mechanism. */ | |
2959 | write_ok (own_buf); | |
2960 | } | |
2961 | else | |
2962 | prepare_resume_reply (own_buf, last_ptid, &last_status); | |
2963 | ||
2d717e4f DJ |
2964 | return 1; |
2965 | } | |
2966 | else | |
2967 | { | |
2968 | write_enn (own_buf); | |
2969 | return 0; | |
2970 | } | |
2971 | } | |
2972 | ||
2973 | /* Run a new program. Return 1 if successful, 0 if failure. */ | |
2974 | static int | |
5b1c542e | 2975 | handle_v_run (char *own_buf) |
2d717e4f | 2976 | { |
7c5ded6a SDJ |
2977 | char *p, *next_p; |
2978 | std::vector<char *> new_argv; | |
2090129c | 2979 | char *new_program_name = NULL; |
2d717e4f DJ |
2980 | int i, new_argc; |
2981 | ||
2982 | new_argc = 0; | |
2983 | for (p = own_buf + strlen ("vRun;"); p && *p; p = strchr (p, ';')) | |
2984 | { | |
2985 | p++; | |
2986 | new_argc++; | |
2987 | } | |
2988 | ||
7c5ded6a | 2989 | for (i = 0, p = own_buf + strlen ("vRun;"); *p; p = next_p, ++i) |
2d717e4f DJ |
2990 | { |
2991 | next_p = strchr (p, ';'); | |
2992 | if (next_p == NULL) | |
2993 | next_p = p + strlen (p); | |
2994 | ||
2995 | if (i == 0 && p == next_p) | |
7c5ded6a SDJ |
2996 | { |
2997 | /* No program specified. */ | |
2090129c SDJ |
2998 | new_program_name = NULL; |
2999 | } | |
3000 | else if (p == next_p) | |
3001 | { | |
3002 | /* Empty argument. */ | |
3003 | new_argv.push_back (xstrdup ("''")); | |
7c5ded6a | 3004 | } |
2d717e4f DJ |
3005 | else |
3006 | { | |
7c5ded6a | 3007 | size_t len = (next_p - p) / 2; |
2090129c | 3008 | /* ARG is the unquoted argument received via the RSP. */ |
7c5ded6a | 3009 | char *arg = (char *) xmalloc (len + 1); |
2090129c SDJ |
3010 | /* FULL_ARGS will contain the quoted version of ARG. */ |
3011 | char *full_arg = (char *) xmalloc ((len + 1) * 2); | |
3012 | /* These are pointers used to navigate the strings above. */ | |
3013 | char *tmp_arg = arg; | |
3014 | char *tmp_full_arg = full_arg; | |
3015 | int need_quote = 0; | |
7c5ded6a SDJ |
3016 | |
3017 | hex2bin (p, (gdb_byte *) arg, len); | |
3018 | arg[len] = '\0'; | |
2d717e4f | 3019 | |
2090129c SDJ |
3020 | while (*tmp_arg != '\0') |
3021 | { | |
3022 | switch (*tmp_arg) | |
3023 | { | |
3024 | case '\n': | |
3025 | /* Quote \n. */ | |
3026 | *tmp_full_arg = '\''; | |
3027 | ++tmp_full_arg; | |
3028 | need_quote = 1; | |
3029 | break; | |
3030 | ||
3031 | case '\'': | |
3032 | /* Quote single quote. */ | |
3033 | *tmp_full_arg = '\\'; | |
3034 | ++tmp_full_arg; | |
3035 | break; | |
3036 | ||
3037 | default: | |
3038 | break; | |
3039 | } | |
3040 | ||
3041 | *tmp_full_arg = *tmp_arg; | |
3042 | ++tmp_full_arg; | |
3043 | ++tmp_arg; | |
3044 | } | |
3045 | ||
3046 | if (need_quote) | |
3047 | *tmp_full_arg++ = '\''; | |
3048 | ||
3049 | /* Finish FULL_ARG and push it into the vector containing | |
3050 | the argv. */ | |
3051 | *tmp_full_arg = '\0'; | |
3052 | if (i == 0) | |
3053 | new_program_name = full_arg; | |
3054 | else | |
3055 | new_argv.push_back (full_arg); | |
3056 | xfree (arg); | |
3057 | } | |
2d717e4f DJ |
3058 | if (*next_p) |
3059 | next_p++; | |
2d717e4f | 3060 | } |
7c5ded6a | 3061 | new_argv.push_back (NULL); |
2d717e4f | 3062 | |
2090129c | 3063 | if (new_program_name == NULL) |
2d717e4f | 3064 | { |
f142445f DJ |
3065 | /* GDB didn't specify a program to run. Use the program from the |
3066 | last run with the new argument list. */ | |
2090129c | 3067 | if (program_name == NULL) |
2d717e4f DJ |
3068 | { |
3069 | write_enn (own_buf); | |
7c5ded6a | 3070 | free_vector_argv (new_argv); |
2d717e4f DJ |
3071 | return 0; |
3072 | } | |
2090129c SDJ |
3073 | } |
3074 | else | |
3075 | { | |
3076 | xfree (program_name); | |
3077 | program_name = new_program_name; | |
2d717e4f | 3078 | } |
f142445f | 3079 | |
aef93bd7 | 3080 | /* Free the old argv and install the new one. */ |
2090129c SDJ |
3081 | free_vector_argv (program_args); |
3082 | program_args = new_argv; | |
3083 | ||
3084 | create_inferior (program_name, program_args); | |
2d717e4f | 3085 | |
5b1c542e | 3086 | if (last_status.kind == TARGET_WAITKIND_STOPPED) |
2d717e4f | 3087 | { |
5b1c542e | 3088 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
bd99dc85 PA |
3089 | |
3090 | /* In non-stop, sending a resume reply doesn't set the general | |
3091 | thread, but GDB assumes a vRun sets it (this is so GDB can | |
3092 | query which is the main thread of the new inferior. */ | |
3093 | if (non_stop) | |
3094 | general_thread = last_ptid; | |
3095 | ||
2d717e4f DJ |
3096 | return 1; |
3097 | } | |
3098 | else | |
3099 | { | |
3100 | write_enn (own_buf); | |
3101 | return 0; | |
3102 | } | |
3103 | } | |
3104 | ||
95954743 | 3105 | /* Kill process. Return 1 if successful, 0 if failure. */ |
5b3da067 | 3106 | static int |
95954743 PA |
3107 | handle_v_kill (char *own_buf) |
3108 | { | |
3109 | int pid; | |
3110 | char *p = &own_buf[6]; | |
0f54c268 PM |
3111 | if (multi_process) |
3112 | pid = strtol (p, NULL, 16); | |
3113 | else | |
3114 | pid = signal_pid; | |
95954743 PA |
3115 | if (pid != 0 && kill_inferior (pid) == 0) |
3116 | { | |
3117 | last_status.kind = TARGET_WAITKIND_SIGNALLED; | |
a493e3e2 | 3118 | last_status.value.sig = GDB_SIGNAL_KILL; |
95954743 | 3119 | last_ptid = pid_to_ptid (pid); |
465a859e | 3120 | discard_queued_stop_replies (last_ptid); |
95954743 PA |
3121 | write_ok (own_buf); |
3122 | return 1; | |
3123 | } | |
3124 | else | |
3125 | { | |
3126 | write_enn (own_buf); | |
3127 | return 0; | |
3128 | } | |
3129 | } | |
3130 | ||
64386c31 | 3131 | /* Handle all of the extended 'v' packets. */ |
28170b88 | 3132 | void |
5b1c542e | 3133 | handle_v_requests (char *own_buf, int packet_len, int *new_packet_len) |
64386c31 | 3134 | { |
db42f210 | 3135 | if (!disable_packet_vCont) |
64386c31 | 3136 | { |
de979965 PA |
3137 | if (strcmp (own_buf, "vCtrlC") == 0) |
3138 | { | |
3139 | (*the_target->request_interrupt) (); | |
3140 | write_ok (own_buf); | |
3141 | return; | |
3142 | } | |
3143 | ||
61012eef | 3144 | if (startswith (own_buf, "vCont;")) |
db42f210 | 3145 | { |
5b1c542e | 3146 | handle_v_cont (own_buf); |
db42f210 PA |
3147 | return; |
3148 | } | |
64386c31 | 3149 | |
61012eef | 3150 | if (startswith (own_buf, "vCont?")) |
db42f210 | 3151 | { |
750ce8d1 YQ |
3152 | strcpy (own_buf, "vCont;c;C;t"); |
3153 | ||
21536b36 YQ |
3154 | if (target_supports_hardware_single_step () |
3155 | || target_supports_software_single_step () | |
3156 | || !vCont_supported) | |
750ce8d1 | 3157 | { |
21536b36 YQ |
3158 | /* If target supports single step either by hardware or by |
3159 | software, add actions s and S to the list of supported | |
3160 | actions. On the other hand, if GDB doesn't request the | |
3161 | supported vCont actions in qSupported packet, add s and | |
3162 | S to the list too. */ | |
750ce8d1 YQ |
3163 | own_buf = own_buf + strlen (own_buf); |
3164 | strcpy (own_buf, ";s;S"); | |
3165 | } | |
3166 | ||
c2d6af84 PA |
3167 | if (target_supports_range_stepping ()) |
3168 | { | |
3169 | own_buf = own_buf + strlen (own_buf); | |
3170 | strcpy (own_buf, ";r"); | |
3171 | } | |
db42f210 PA |
3172 | return; |
3173 | } | |
64386c31 DJ |
3174 | } |
3175 | ||
61012eef | 3176 | if (startswith (own_buf, "vFile:") |
a6b151f1 DJ |
3177 | && handle_vFile (own_buf, packet_len, new_packet_len)) |
3178 | return; | |
3179 | ||
61012eef | 3180 | if (startswith (own_buf, "vAttach;")) |
2d717e4f | 3181 | { |
901f9912 | 3182 | if ((!extended_protocol || !multi_process) && target_running ()) |
2d717e4f | 3183 | { |
fd96d250 PA |
3184 | fprintf (stderr, "Already debugging a process\n"); |
3185 | write_enn (own_buf); | |
3186 | return; | |
2d717e4f | 3187 | } |
5b1c542e | 3188 | handle_v_attach (own_buf); |
2d717e4f DJ |
3189 | return; |
3190 | } | |
3191 | ||
61012eef | 3192 | if (startswith (own_buf, "vRun;")) |
2d717e4f | 3193 | { |
901f9912 | 3194 | if ((!extended_protocol || !multi_process) && target_running ()) |
2d717e4f | 3195 | { |
fd96d250 PA |
3196 | fprintf (stderr, "Already debugging a process\n"); |
3197 | write_enn (own_buf); | |
3198 | return; | |
2d717e4f | 3199 | } |
5b1c542e | 3200 | handle_v_run (own_buf); |
2d717e4f DJ |
3201 | return; |
3202 | } | |
3203 | ||
61012eef | 3204 | if (startswith (own_buf, "vKill;")) |
95954743 PA |
3205 | { |
3206 | if (!target_running ()) | |
3207 | { | |
3208 | fprintf (stderr, "No process to kill\n"); | |
3209 | write_enn (own_buf); | |
3210 | return; | |
3211 | } | |
3212 | handle_v_kill (own_buf); | |
3213 | return; | |
3214 | } | |
3215 | ||
14a00470 YQ |
3216 | if (handle_notif_ack (own_buf, packet_len)) |
3217 | return; | |
bd99dc85 | 3218 | |
64386c31 DJ |
3219 | /* Otherwise we didn't know what packet it was. Say we didn't |
3220 | understand it. */ | |
3221 | own_buf[0] = 0; | |
3222 | return; | |
3223 | } | |
3224 | ||
0bfdf32f | 3225 | /* Resume thread and wait for another event. In non-stop mode, |
bd99dc85 PA |
3226 | don't really wait here, but return immediatelly to the event |
3227 | loop. */ | |
1fd7cdc2 | 3228 | static void |
5b1c542e | 3229 | myresume (char *own_buf, int step, int sig) |
64386c31 DJ |
3230 | { |
3231 | struct thread_resume resume_info[2]; | |
3232 | int n = 0; | |
2bd7c093 | 3233 | int valid_cont_thread; |
a20d5e98 | 3234 | |
95954743 PA |
3235 | valid_cont_thread = (!ptid_equal (cont_thread, null_ptid) |
3236 | && !ptid_equal (cont_thread, minus_one_ptid)); | |
2bd7c093 PA |
3237 | |
3238 | if (step || sig || valid_cont_thread) | |
64386c31 | 3239 | { |
fbd5db48 | 3240 | resume_info[0].thread = current_ptid; |
bd99dc85 PA |
3241 | if (step) |
3242 | resume_info[0].kind = resume_step; | |
3243 | else | |
3244 | resume_info[0].kind = resume_continue; | |
64386c31 | 3245 | resume_info[0].sig = sig; |
64386c31 DJ |
3246 | n++; |
3247 | } | |
2bd7c093 PA |
3248 | |
3249 | if (!valid_cont_thread) | |
3250 | { | |
95954743 | 3251 | resume_info[n].thread = minus_one_ptid; |
bd99dc85 | 3252 | resume_info[n].kind = resume_continue; |
2bd7c093 PA |
3253 | resume_info[n].sig = 0; |
3254 | n++; | |
3255 | } | |
64386c31 | 3256 | |
b7ea362b | 3257 | resume (resume_info, n); |
bd99dc85 PA |
3258 | } |
3259 | ||
3260 | /* Callback for for_each_inferior. Make a new stop reply for each | |
3261 | stopped thread. */ | |
3262 | ||
95954743 PA |
3263 | static int |
3264 | queue_stop_reply_callback (struct inferior_list_entry *entry, void *arg) | |
bd99dc85 | 3265 | { |
8336d594 | 3266 | struct thread_info *thread = (struct thread_info *) entry; |
bd99dc85 | 3267 | |
8336d594 PA |
3268 | /* For now, assume targets that don't have this callback also don't |
3269 | manage the thread's last_status field. */ | |
3270 | if (the_target->thread_stopped == NULL) | |
95954743 | 3271 | { |
8d749320 | 3272 | struct vstop_notif *new_notif = XNEW (struct vstop_notif); |
14a00470 YQ |
3273 | |
3274 | new_notif->ptid = entry->id; | |
3275 | new_notif->status = thread->last_status; | |
8336d594 PA |
3276 | /* Pass the last stop reply back to GDB, but don't notify |
3277 | yet. */ | |
14a00470 YQ |
3278 | notif_event_enque (¬if_stop, |
3279 | (struct notif_event *) new_notif); | |
8336d594 PA |
3280 | } |
3281 | else | |
3282 | { | |
3283 | if (thread_stopped (thread)) | |
3284 | { | |
3285 | if (debug_threads) | |
3360c0bf | 3286 | { |
23fdd69e | 3287 | std::string status_string |
3360c0bf LM |
3288 | = target_waitstatus_to_string (&thread->last_status); |
3289 | ||
87ce2a04 DE |
3290 | debug_printf ("Reporting thread %s as already stopped with %s\n", |
3291 | target_pid_to_str (entry->id), | |
23fdd69e | 3292 | status_string.c_str ()); |
3360c0bf | 3293 | } |
8336d594 | 3294 | |
d20a8ad9 PA |
3295 | gdb_assert (thread->last_status.kind != TARGET_WAITKIND_IGNORE); |
3296 | ||
8336d594 PA |
3297 | /* Pass the last stop reply back to GDB, but don't notify |
3298 | yet. */ | |
3299 | queue_stop_reply (entry->id, &thread->last_status); | |
3300 | } | |
95954743 PA |
3301 | } |
3302 | ||
3303 | return 0; | |
64386c31 DJ |
3304 | } |
3305 | ||
ce1a5b52 PA |
3306 | /* Set this inferior threads's state as "want-stopped". We won't |
3307 | resume this thread until the client gives us another action for | |
3308 | it. */ | |
8336d594 PA |
3309 | |
3310 | static void | |
3311 | gdb_wants_thread_stopped (struct inferior_list_entry *entry) | |
3312 | { | |
3313 | struct thread_info *thread = (struct thread_info *) entry; | |
3314 | ||
3315 | thread->last_resume_kind = resume_stop; | |
3316 | ||
3317 | if (thread->last_status.kind == TARGET_WAITKIND_IGNORE) | |
3318 | { | |
ce1a5b52 PA |
3319 | /* Most threads are stopped implicitly (all-stop); tag that with |
3320 | signal 0. */ | |
8336d594 | 3321 | thread->last_status.kind = TARGET_WAITKIND_STOPPED; |
a493e3e2 | 3322 | thread->last_status.value.sig = GDB_SIGNAL_0; |
8336d594 PA |
3323 | } |
3324 | } | |
3325 | ||
3326 | /* Set all threads' states as "want-stopped". */ | |
3327 | ||
3328 | static void | |
3329 | gdb_wants_all_threads_stopped (void) | |
3330 | { | |
3331 | for_each_inferior (&all_threads, gdb_wants_thread_stopped); | |
3332 | } | |
3333 | ||
3334 | /* Clear the gdb_detached flag of every process. */ | |
3335 | ||
3336 | static void | |
3337 | gdb_reattached_process (struct inferior_list_entry *entry) | |
3338 | { | |
3339 | struct process_info *process = (struct process_info *) entry; | |
3340 | ||
3341 | process->gdb_detached = 0; | |
3342 | } | |
3343 | ||
b7ea362b PA |
3344 | /* Callback for for_each_inferior. Clear the thread's pending status |
3345 | flag. */ | |
3346 | ||
3347 | static void | |
3348 | clear_pending_status_callback (struct inferior_list_entry *entry) | |
3349 | { | |
3350 | struct thread_info *thread = (struct thread_info *) entry; | |
3351 | ||
3352 | thread->status_pending_p = 0; | |
3353 | } | |
3354 | ||
3355 | /* Callback for for_each_inferior. If the thread is stopped with an | |
3356 | interesting event, mark it as having a pending event. */ | |
3357 | ||
3358 | static void | |
3359 | set_pending_status_callback (struct inferior_list_entry *entry) | |
3360 | { | |
3361 | struct thread_info *thread = (struct thread_info *) entry; | |
3362 | ||
3363 | if (thread->last_status.kind != TARGET_WAITKIND_STOPPED | |
3364 | || (thread->last_status.value.sig != GDB_SIGNAL_0 | |
3365 | /* A breakpoint, watchpoint or finished step from a previous | |
3366 | GDB run isn't considered interesting for a new GDB run. | |
3367 | If we left those pending, the new GDB could consider them | |
3368 | random SIGTRAPs. This leaves out real async traps. We'd | |
3369 | have to peek into the (target-specific) siginfo to | |
3370 | distinguish those. */ | |
3371 | && thread->last_status.value.sig != GDB_SIGNAL_TRAP)) | |
3372 | thread->status_pending_p = 1; | |
3373 | } | |
3374 | ||
3375 | /* Callback for find_inferior. Return true if ENTRY (a thread) has a | |
3376 | pending status to report to GDB. */ | |
3377 | ||
3378 | static int | |
3379 | find_status_pending_thread_callback (struct inferior_list_entry *entry, void *data) | |
3380 | { | |
3381 | struct thread_info *thread = (struct thread_info *) entry; | |
3382 | ||
3383 | return thread->status_pending_p; | |
3384 | } | |
3385 | ||
5b1c542e PA |
3386 | /* Status handler for the '?' packet. */ |
3387 | ||
3388 | static void | |
3389 | handle_status (char *own_buf) | |
3390 | { | |
8336d594 PA |
3391 | /* GDB is connected, don't forward events to the target anymore. */ |
3392 | for_each_inferior (&all_processes, gdb_reattached_process); | |
bd99dc85 PA |
3393 | |
3394 | /* In non-stop mode, we must send a stop reply for each stopped | |
3395 | thread. In all-stop mode, just send one for the first stopped | |
3396 | thread we find. */ | |
3397 | ||
3398 | if (non_stop) | |
3399 | { | |
8336d594 | 3400 | find_inferior (&all_threads, queue_stop_reply_callback, NULL); |
bd99dc85 PA |
3401 | |
3402 | /* The first is sent immediatly. OK is sent if there is no | |
3403 | stopped thread, which is the same handling of the vStopped | |
3404 | packet (by design). */ | |
14a00470 | 3405 | notif_write_event (¬if_stop, own_buf); |
bd99dc85 | 3406 | } |
5b1c542e | 3407 | else |
bd99dc85 | 3408 | { |
b7ea362b PA |
3409 | struct inferior_list_entry *thread = NULL; |
3410 | ||
7984d532 | 3411 | pause_all (0); |
fa593d66 | 3412 | stabilize_threads (); |
8336d594 PA |
3413 | gdb_wants_all_threads_stopped (); |
3414 | ||
b7ea362b PA |
3415 | /* We can only report one status, but we might be coming out of |
3416 | non-stop -- if more than one thread is stopped with | |
3417 | interesting events, leave events for the threads we're not | |
3418 | reporting now pending. They'll be reported the next time the | |
3419 | threads are resumed. Start by marking all interesting events | |
3420 | as pending. */ | |
3421 | for_each_inferior (&all_threads, set_pending_status_callback); | |
3422 | ||
3423 | /* Prefer the last thread that reported an event to GDB (even if | |
3424 | that was a GDB_SIGNAL_TRAP). */ | |
3425 | if (last_status.kind != TARGET_WAITKIND_IGNORE | |
3426 | && last_status.kind != TARGET_WAITKIND_EXITED | |
3427 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
3428 | thread = find_inferior_id (&all_threads, last_ptid); | |
3429 | ||
3430 | /* If the last event thread is not found for some reason, look | |
3431 | for some other thread that might have an event to report. */ | |
3432 | if (thread == NULL) | |
3433 | thread = find_inferior (&all_threads, | |
3434 | find_status_pending_thread_callback, NULL); | |
3435 | ||
3436 | /* If we're still out of luck, simply pick the first thread in | |
3437 | the thread list. */ | |
3438 | if (thread == NULL) | |
649ebbca | 3439 | thread = get_first_inferior (&all_threads); |
b7ea362b PA |
3440 | |
3441 | if (thread != NULL) | |
8336d594 | 3442 | { |
b7ea362b PA |
3443 | struct thread_info *tp = (struct thread_info *) thread; |
3444 | ||
3445 | /* We're reporting this event, so it's no longer | |
3446 | pending. */ | |
3447 | tp->status_pending_p = 0; | |
3448 | ||
3449 | /* GDB assumes the current thread is the thread we're | |
3450 | reporting the status for. */ | |
3451 | general_thread = thread->id; | |
0bfdf32f | 3452 | set_desired_thread (1); |
8336d594 | 3453 | |
b7ea362b PA |
3454 | gdb_assert (tp->last_status.kind != TARGET_WAITKIND_IGNORE); |
3455 | prepare_resume_reply (own_buf, tp->entry.id, &tp->last_status); | |
8336d594 | 3456 | } |
bd99dc85 PA |
3457 | else |
3458 | strcpy (own_buf, "W00"); | |
3459 | } | |
5b1c542e PA |
3460 | } |
3461 | ||
dd24457d DJ |
3462 | static void |
3463 | gdbserver_version (void) | |
3464 | { | |
c16158bc | 3465 | printf ("GNU gdbserver %s%s\n" |
61baf725 | 3466 | "Copyright (C) 2017 Free Software Foundation, Inc.\n" |
493e2a69 MS |
3467 | "gdbserver is free software, covered by the " |
3468 | "GNU General Public License.\n" | |
dd24457d | 3469 | "This gdbserver was configured as \"%s\"\n", |
c16158bc | 3470 | PKGVERSION, version, host_name); |
dd24457d DJ |
3471 | } |
3472 | ||
0bc68c49 | 3473 | static void |
c16158bc | 3474 | gdbserver_usage (FILE *stream) |
0bc68c49 | 3475 | { |
c16158bc JM |
3476 | fprintf (stream, "Usage:\tgdbserver [OPTIONS] COMM PROG [ARGS ...]\n" |
3477 | "\tgdbserver [OPTIONS] --attach COMM PID\n" | |
3478 | "\tgdbserver [OPTIONS] --multi COMM\n" | |
3479 | "\n" | |
41f98f02 PA |
3480 | "COMM may either be a tty device (for serial debugging),\n" |
3481 | "HOST:PORT to listen for a TCP connection, or '-' or 'stdio' to use \n" | |
3482 | "stdin/stdout of gdbserver.\n" | |
3483 | "PROG is the executable program. ARGS are arguments passed to inferior.\n" | |
3484 | "PID is the process ID to attach to, when --attach is specified.\n" | |
3485 | "\n" | |
3486 | "Operating modes:\n" | |
3487 | "\n" | |
3488 | " --attach Attach to running process PID.\n" | |
3489 | " --multi Start server without a specific program, and\n" | |
3490 | " only quit when explicitly commanded.\n" | |
3491 | " --once Exit after the first connection has closed.\n" | |
3492 | " --help Print this message and then exit.\n" | |
3493 | " --version Display version information and exit.\n" | |
3494 | "\n" | |
3495 | "Other options:\n" | |
3496 | "\n" | |
3497 | " --wrapper WRAPPER -- Run WRAPPER to start new programs.\n" | |
3498 | " --disable-randomization\n" | |
3499 | " Run PROG with address space randomization disabled.\n" | |
3500 | " --no-disable-randomization\n" | |
3501 | " Don't disable address space randomization when\n" | |
3502 | " starting PROG.\n" | |
aefd8b33 SDJ |
3503 | " --startup-with-shell\n" |
3504 | " Start PROG using a shell. I.e., execs a shell that\n" | |
3505 | " then execs PROG. (default)\n" | |
3506 | " --no-startup-with-shell\n" | |
3507 | " Exec PROG directly instead of using a shell.\n" | |
3508 | " Disables argument globbing and variable substitution\n" | |
3509 | " on UNIX-like systems.\n" | |
41f98f02 PA |
3510 | "\n" |
3511 | "Debug options:\n" | |
c16158bc | 3512 | "\n" |
62709adf | 3513 | " --debug Enable general debugging output.\n" |
87ce2a04 DE |
3514 | " --debug-format=opt1[,opt2,...]\n" |
3515 | " Specify extra content in debugging output.\n" | |
3516 | " Options:\n" | |
3517 | " all\n" | |
3518 | " none\n" | |
87ce2a04 | 3519 | " timestamp\n" |
62709adf | 3520 | " --remote-debug Enable remote protocol debugging output.\n" |
41f98f02 PA |
3521 | " --disable-packet=opt1[,opt2,...]\n" |
3522 | " Disable support for RSP packets or features.\n" | |
3523 | " Options:\n" | |
3524 | " vCont, Tthread, qC, qfThreadInfo and \n" | |
3525 | " threads (disable all threading packets).\n" | |
3526 | "\n" | |
3527 | "For more information, consult the GDB manual (available as on-line \n" | |
3528 | "info or a printed manual).\n"); | |
c16158bc JM |
3529 | if (REPORT_BUGS_TO[0] && stream == stdout) |
3530 | fprintf (stream, "Report bugs to \"%s\".\n", REPORT_BUGS_TO); | |
0bc68c49 DJ |
3531 | } |
3532 | ||
db42f210 PA |
3533 | static void |
3534 | gdbserver_show_disableable (FILE *stream) | |
3535 | { | |
3536 | fprintf (stream, "Disableable packets:\n" | |
3537 | " vCont \tAll vCont packets\n" | |
3538 | " qC \tQuerying the current thread\n" | |
3539 | " qfThreadInfo\tThread listing\n" | |
493e2a69 MS |
3540 | " Tthread \tPassing the thread specifier in the " |
3541 | "T stop reply packet\n" | |
db42f210 PA |
3542 | " threads \tAll of the above\n"); |
3543 | } | |
3544 | ||
95954743 PA |
3545 | static void |
3546 | kill_inferior_callback (struct inferior_list_entry *entry) | |
3547 | { | |
3548 | struct process_info *process = (struct process_info *) entry; | |
80894984 | 3549 | int pid = ptid_get_pid (process->entry.id); |
95954743 PA |
3550 | |
3551 | kill_inferior (pid); | |
465a859e | 3552 | discard_queued_stop_replies (pid_to_ptid (pid)); |
95954743 PA |
3553 | } |
3554 | ||
9f767825 DE |
3555 | /* Callback for for_each_inferior to detach or kill the inferior, |
3556 | depending on whether we attached to it or not. | |
3557 | We inform the user whether we're detaching or killing the process | |
3558 | as this is only called when gdbserver is about to exit. */ | |
3559 | ||
95954743 PA |
3560 | static void |
3561 | detach_or_kill_inferior_callback (struct inferior_list_entry *entry) | |
3562 | { | |
3563 | struct process_info *process = (struct process_info *) entry; | |
80894984 | 3564 | int pid = ptid_get_pid (process->entry.id); |
95954743 PA |
3565 | |
3566 | if (process->attached) | |
3567 | detach_inferior (pid); | |
3568 | else | |
3569 | kill_inferior (pid); | |
3570 | ||
465a859e | 3571 | discard_queued_stop_replies (pid_to_ptid (pid)); |
95954743 PA |
3572 | } |
3573 | ||
9f767825 DE |
3574 | /* for_each_inferior callback for detach_or_kill_for_exit to print |
3575 | the pids of started inferiors. */ | |
3576 | ||
3577 | static void | |
3578 | print_started_pid (struct inferior_list_entry *entry) | |
3579 | { | |
3580 | struct process_info *process = (struct process_info *) entry; | |
3581 | ||
3582 | if (! process->attached) | |
3583 | { | |
80894984 | 3584 | int pid = ptid_get_pid (process->entry.id); |
9f767825 DE |
3585 | fprintf (stderr, " %d", pid); |
3586 | } | |
3587 | } | |
3588 | ||
3589 | /* for_each_inferior callback for detach_or_kill_for_exit to print | |
3590 | the pids of attached inferiors. */ | |
3591 | ||
3592 | static void | |
3593 | print_attached_pid (struct inferior_list_entry *entry) | |
3594 | { | |
3595 | struct process_info *process = (struct process_info *) entry; | |
3596 | ||
3597 | if (process->attached) | |
3598 | { | |
80894984 | 3599 | int pid = ptid_get_pid (process->entry.id); |
9f767825 DE |
3600 | fprintf (stderr, " %d", pid); |
3601 | } | |
3602 | } | |
3603 | ||
3604 | /* Call this when exiting gdbserver with possible inferiors that need | |
3605 | to be killed or detached from. */ | |
3606 | ||
3607 | static void | |
3608 | detach_or_kill_for_exit (void) | |
3609 | { | |
3610 | /* First print a list of the inferiors we will be killing/detaching. | |
3611 | This is to assist the user, for example, in case the inferior unexpectedly | |
3612 | dies after we exit: did we screw up or did the inferior exit on its own? | |
3613 | Having this info will save some head-scratching. */ | |
3614 | ||
3615 | if (have_started_inferiors_p ()) | |
3616 | { | |
3617 | fprintf (stderr, "Killing process(es):"); | |
3618 | for_each_inferior (&all_processes, print_started_pid); | |
3619 | fprintf (stderr, "\n"); | |
3620 | } | |
3621 | if (have_attached_inferiors_p ()) | |
3622 | { | |
3623 | fprintf (stderr, "Detaching process(es):"); | |
3624 | for_each_inferior (&all_processes, print_attached_pid); | |
3625 | fprintf (stderr, "\n"); | |
3626 | } | |
3627 | ||
3628 | /* Now we can kill or detach the inferiors. */ | |
3629 | ||
3630 | for_each_inferior (&all_processes, detach_or_kill_inferior_callback); | |
3631 | } | |
3632 | ||
860789c7 GB |
3633 | /* Value that will be passed to exit(3) when gdbserver exits. */ |
3634 | static int exit_code; | |
3635 | ||
3636 | /* Cleanup version of detach_or_kill_for_exit. */ | |
3637 | ||
3638 | static void | |
3639 | detach_or_kill_for_exit_cleanup (void *ignore) | |
3640 | { | |
860789c7 | 3641 | |
492d29ea | 3642 | TRY |
860789c7 GB |
3643 | { |
3644 | detach_or_kill_for_exit (); | |
3645 | } | |
3646 | ||
492d29ea | 3647 | CATCH (exception, RETURN_MASK_ALL) |
860789c7 GB |
3648 | { |
3649 | fflush (stdout); | |
3650 | fprintf (stderr, "Detach or kill failed: %s\n", exception.message); | |
3651 | exit_code = 1; | |
3652 | } | |
492d29ea | 3653 | END_CATCH |
860789c7 GB |
3654 | } |
3655 | ||
3656 | /* Main function. This is called by the real "main" function, | |
3657 | wrapped in a TRY_CATCH that handles any uncaught exceptions. */ | |
3658 | ||
3659 | static void ATTRIBUTE_NORETURN | |
3660 | captured_main (int argc, char *argv[]) | |
c906108c | 3661 | { |
0729219d DJ |
3662 | int bad_attach; |
3663 | int pid; | |
fb32b4f7 PA |
3664 | char *arg_end; |
3665 | const char *port = NULL; | |
2d717e4f | 3666 | char **next_arg = &argv[1]; |
89dc0afd JK |
3667 | volatile int multi_mode = 0; |
3668 | volatile int attach = 0; | |
2d717e4f | 3669 | int was_running; |
6d580b63 | 3670 | bool selftest = false; |
c906108c | 3671 | |
2d717e4f | 3672 | while (*next_arg != NULL && **next_arg == '-') |
dd24457d | 3673 | { |
2d717e4f DJ |
3674 | if (strcmp (*next_arg, "--version") == 0) |
3675 | { | |
3676 | gdbserver_version (); | |
3677 | exit (0); | |
3678 | } | |
3679 | else if (strcmp (*next_arg, "--help") == 0) | |
3680 | { | |
c16158bc | 3681 | gdbserver_usage (stdout); |
2d717e4f DJ |
3682 | exit (0); |
3683 | } | |
3684 | else if (strcmp (*next_arg, "--attach") == 0) | |
3685 | attach = 1; | |
3686 | else if (strcmp (*next_arg, "--multi") == 0) | |
3687 | multi_mode = 1; | |
ccd213ac DJ |
3688 | else if (strcmp (*next_arg, "--wrapper") == 0) |
3689 | { | |
7c5ded6a SDJ |
3690 | char **tmp; |
3691 | ||
ccd213ac DJ |
3692 | next_arg++; |
3693 | ||
7c5ded6a | 3694 | tmp = next_arg; |
ccd213ac | 3695 | while (*next_arg != NULL && strcmp (*next_arg, "--") != 0) |
7c5ded6a | 3696 | { |
2090129c SDJ |
3697 | wrapper_argv += *next_arg; |
3698 | wrapper_argv += ' '; | |
7c5ded6a SDJ |
3699 | next_arg++; |
3700 | } | |
ccd213ac | 3701 | |
2090129c SDJ |
3702 | if (!wrapper_argv.empty ()) |
3703 | { | |
3704 | /* Erase the last whitespace. */ | |
3705 | wrapper_argv.erase (wrapper_argv.end () - 1); | |
3706 | } | |
3707 | ||
7c5ded6a | 3708 | if (next_arg == tmp || *next_arg == NULL) |
ccd213ac | 3709 | { |
c16158bc | 3710 | gdbserver_usage (stderr); |
ccd213ac DJ |
3711 | exit (1); |
3712 | } | |
3713 | ||
3714 | /* Consume the "--". */ | |
3715 | *next_arg = NULL; | |
3716 | } | |
2d717e4f DJ |
3717 | else if (strcmp (*next_arg, "--debug") == 0) |
3718 | debug_threads = 1; | |
61012eef | 3719 | else if (startswith (*next_arg, "--debug-format=")) |
87ce2a04 DE |
3720 | { |
3721 | char *error_msg | |
3722 | = parse_debug_format_options ((*next_arg) | |
3723 | + sizeof ("--debug-format=") - 1, 0); | |
3724 | ||
3725 | if (error_msg != NULL) | |
3726 | { | |
3727 | fprintf (stderr, "%s", error_msg); | |
3728 | exit (1); | |
3729 | } | |
3730 | } | |
62709adf PA |
3731 | else if (strcmp (*next_arg, "--remote-debug") == 0) |
3732 | remote_debug = 1; | |
db42f210 PA |
3733 | else if (strcmp (*next_arg, "--disable-packet") == 0) |
3734 | { | |
3735 | gdbserver_show_disableable (stdout); | |
3736 | exit (0); | |
3737 | } | |
61012eef | 3738 | else if (startswith (*next_arg, "--disable-packet=")) |
db42f210 PA |
3739 | { |
3740 | char *packets, *tok; | |
3741 | ||
3742 | packets = *next_arg += sizeof ("--disable-packet=") - 1; | |
3743 | for (tok = strtok (packets, ","); | |
3744 | tok != NULL; | |
3745 | tok = strtok (NULL, ",")) | |
3746 | { | |
3747 | if (strcmp ("vCont", tok) == 0) | |
3748 | disable_packet_vCont = 1; | |
3749 | else if (strcmp ("Tthread", tok) == 0) | |
3750 | disable_packet_Tthread = 1; | |
3751 | else if (strcmp ("qC", tok) == 0) | |
3752 | disable_packet_qC = 1; | |
3753 | else if (strcmp ("qfThreadInfo", tok) == 0) | |
3754 | disable_packet_qfThreadInfo = 1; | |
3755 | else if (strcmp ("threads", tok) == 0) | |
3756 | { | |
3757 | disable_packet_vCont = 1; | |
3758 | disable_packet_Tthread = 1; | |
3759 | disable_packet_qC = 1; | |
3760 | disable_packet_qfThreadInfo = 1; | |
3761 | } | |
3762 | else | |
3763 | { | |
3764 | fprintf (stderr, "Don't know how to disable \"%s\".\n\n", | |
3765 | tok); | |
3766 | gdbserver_show_disableable (stderr); | |
3767 | exit (1); | |
3768 | } | |
3769 | } | |
3770 | } | |
e0f9f062 DE |
3771 | else if (strcmp (*next_arg, "-") == 0) |
3772 | { | |
3773 | /* "-" specifies a stdio connection and is a form of port | |
3774 | specification. */ | |
fb32b4f7 PA |
3775 | port = STDIO_CONNECTION_NAME; |
3776 | next_arg++; | |
e0f9f062 DE |
3777 | break; |
3778 | } | |
03583c20 UW |
3779 | else if (strcmp (*next_arg, "--disable-randomization") == 0) |
3780 | disable_randomization = 1; | |
3781 | else if (strcmp (*next_arg, "--no-disable-randomization") == 0) | |
3782 | disable_randomization = 0; | |
aefd8b33 SDJ |
3783 | else if (strcmp (*next_arg, "--startup-with-shell") == 0) |
3784 | startup_with_shell = true; | |
3785 | else if (strcmp (*next_arg, "--no-startup-with-shell") == 0) | |
3786 | startup_with_shell = false; | |
03f2bd59 JK |
3787 | else if (strcmp (*next_arg, "--once") == 0) |
3788 | run_once = 1; | |
6d580b63 YQ |
3789 | else if (strcmp (*next_arg, "--selftest") == 0) |
3790 | selftest = true; | |
2d717e4f DJ |
3791 | else |
3792 | { | |
3793 | fprintf (stderr, "Unknown argument: %s\n", *next_arg); | |
3794 | exit (1); | |
3795 | } | |
dd24457d | 3796 | |
2d717e4f DJ |
3797 | next_arg++; |
3798 | continue; | |
dd24457d DJ |
3799 | } |
3800 | ||
fb32b4f7 PA |
3801 | if (port == NULL) |
3802 | { | |
3803 | port = *next_arg; | |
3804 | next_arg++; | |
3805 | } | |
6d580b63 YQ |
3806 | if ((port == NULL || (!attach && !multi_mode && *next_arg == NULL)) |
3807 | && !selftest) | |
2d717e4f | 3808 | { |
c16158bc | 3809 | gdbserver_usage (stderr); |
2d717e4f DJ |
3810 | exit (1); |
3811 | } | |
3812 | ||
602e3198 JK |
3813 | /* Remember stdio descriptors. LISTEN_DESC must not be listed, it will be |
3814 | opened by remote_prepare. */ | |
3815 | notice_open_fds (); | |
3816 | ||
f348d89a PA |
3817 | save_original_signals_state (); |
3818 | ||
e0f9f062 DE |
3819 | /* We need to know whether the remote connection is stdio before |
3820 | starting the inferior. Inferiors created in this scenario have | |
3821 | stdin,stdout redirected. So do this here before we call | |
3822 | start_inferior. */ | |
6d580b63 YQ |
3823 | if (port != NULL) |
3824 | remote_prepare (port); | |
e0f9f062 | 3825 | |
0729219d DJ |
3826 | bad_attach = 0; |
3827 | pid = 0; | |
2d717e4f DJ |
3828 | |
3829 | /* --attach used to come after PORT, so allow it there for | |
3830 | compatibility. */ | |
3831 | if (*next_arg != NULL && strcmp (*next_arg, "--attach") == 0) | |
45b7b345 | 3832 | { |
2d717e4f DJ |
3833 | attach = 1; |
3834 | next_arg++; | |
45b7b345 DJ |
3835 | } |
3836 | ||
2d717e4f DJ |
3837 | if (attach |
3838 | && (*next_arg == NULL | |
3839 | || (*next_arg)[0] == '\0' | |
3840 | || (pid = strtoul (*next_arg, &arg_end, 0)) == 0 | |
3841 | || *arg_end != '\0' | |
3842 | || next_arg[1] != NULL)) | |
3843 | bad_attach = 1; | |
3844 | ||
3845 | if (bad_attach) | |
dd24457d | 3846 | { |
c16158bc | 3847 | gdbserver_usage (stderr); |
dd24457d DJ |
3848 | exit (1); |
3849 | } | |
c906108c | 3850 | |
2090129c | 3851 | /* Gather information about the environment. */ |
9a6c7d9c | 3852 | our_environ = gdb_environ::from_host_environ (); |
2090129c | 3853 | |
a20d5e98 | 3854 | initialize_async_io (); |
4ce44c66 | 3855 | initialize_low (); |
2090129c | 3856 | have_job_control (); |
60f662b0 | 3857 | initialize_event_loop (); |
219f2f23 PA |
3858 | if (target_supports_tracepoints ()) |
3859 | initialize_tracepoint (); | |
465a859e | 3860 | initialize_notif (); |
4ce44c66 | 3861 | |
224c3ddb SM |
3862 | own_buf = (char *) xmalloc (PBUFSIZ + 1); |
3863 | mem_buf = (unsigned char *) xmalloc (PBUFSIZ); | |
0a30fbc4 | 3864 | |
6d580b63 YQ |
3865 | if (selftest) |
3866 | { | |
3867 | selftests::run_tests (); | |
3868 | throw_quit ("Quit"); | |
3869 | } | |
3870 | ||
2d717e4f | 3871 | if (pid == 0 && *next_arg != NULL) |
45b7b345 | 3872 | { |
2d717e4f DJ |
3873 | int i, n; |
3874 | ||
3875 | n = argc - (next_arg - argv); | |
2090129c SDJ |
3876 | program_name = xstrdup (next_arg[0]); |
3877 | for (i = 1; i < n; i++) | |
3878 | program_args.push_back (xstrdup (next_arg[i])); | |
3879 | program_args.push_back (NULL); | |
2d717e4f | 3880 | |
45b7b345 | 3881 | /* Wait till we are at first instruction in program. */ |
2090129c | 3882 | create_inferior (program_name, program_args); |
c906108c | 3883 | |
c588c53c MS |
3884 | /* We are now (hopefully) stopped at the first instruction of |
3885 | the target process. This assumes that the target process was | |
3886 | successfully created. */ | |
45b7b345 | 3887 | } |
2d717e4f DJ |
3888 | else if (pid != 0) |
3889 | { | |
5b1c542e | 3890 | if (attach_inferior (pid) == -1) |
2d717e4f DJ |
3891 | error ("Attaching not supported on this target"); |
3892 | ||
3893 | /* Otherwise succeeded. */ | |
3894 | } | |
45b7b345 DJ |
3895 | else |
3896 | { | |
5b1c542e PA |
3897 | last_status.kind = TARGET_WAITKIND_EXITED; |
3898 | last_status.value.integer = 0; | |
95954743 | 3899 | last_ptid = minus_one_ptid; |
45b7b345 | 3900 | } |
860789c7 | 3901 | make_cleanup (detach_or_kill_for_exit_cleanup, NULL); |
c906108c | 3902 | |
311de423 PA |
3903 | /* Don't report shared library events on the initial connection, |
3904 | even if some libraries are preloaded. Avoids the "stopped by | |
3905 | shared library event" notice on gdb side. */ | |
3906 | dlls_changed = 0; | |
3907 | ||
5b1c542e PA |
3908 | if (last_status.kind == TARGET_WAITKIND_EXITED |
3909 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2d717e4f DJ |
3910 | was_running = 0; |
3911 | else | |
3912 | was_running = 1; | |
3913 | ||
3914 | if (!was_running && !multi_mode) | |
860789c7 | 3915 | error ("No program to debug"); |
c588c53c | 3916 | |
c906108c SS |
3917 | while (1) |
3918 | { | |
860789c7 | 3919 | |
a6f3e723 | 3920 | noack_mode = 0; |
95954743 | 3921 | multi_process = 0; |
89245bc0 DB |
3922 | report_fork_events = 0; |
3923 | report_vfork_events = 0; | |
94585166 | 3924 | report_exec_events = 0; |
8336d594 PA |
3925 | /* Be sure we're out of tfind mode. */ |
3926 | current_traceframe = -1; | |
40e91bc7 | 3927 | cont_thread = null_ptid; |
1ec68e26 PA |
3928 | swbreak_feature = 0; |
3929 | hwbreak_feature = 0; | |
750ce8d1 | 3930 | vCont_supported = 0; |
bd99dc85 | 3931 | |
2d717e4f | 3932 | remote_open (port); |
c906108c | 3933 | |
492d29ea | 3934 | TRY |
2d717e4f | 3935 | { |
860789c7 GB |
3936 | /* Wait for events. This will return when all event sources |
3937 | are removed from the event loop. */ | |
3938 | start_event_loop (); | |
2d717e4f | 3939 | |
860789c7 | 3940 | /* If an exit was requested (using the "monitor exit" |
fddedbe6 PA |
3941 | command), terminate now. */ |
3942 | if (exit_requested) | |
3943 | throw_quit ("Quit"); | |
3944 | ||
3945 | /* The only other way to get here is for getpkt to fail: | |
3946 | ||
3947 | - If --once was specified, we're done. | |
bd99dc85 | 3948 | |
fddedbe6 PA |
3949 | - If not in extended-remote mode, and we're no longer |
3950 | debugging anything, simply exit: GDB has disconnected | |
3951 | after processing the last process exit. | |
3952 | ||
3953 | - Otherwise, close the connection and reopen it at the | |
3954 | top of the loop. */ | |
3955 | if (run_once || (!extended_protocol && !target_running ())) | |
860789c7 | 3956 | throw_quit ("Quit"); |
bd99dc85 | 3957 | |
860789c7 GB |
3958 | fprintf (stderr, |
3959 | "Remote side has terminated connection. " | |
3960 | "GDBserver will reopen the connection.\n"); | |
8336d594 | 3961 | |
860789c7 GB |
3962 | /* Get rid of any pending statuses. An eventual reconnection |
3963 | (by the same GDB instance or another) will refresh all its | |
3964 | state from scratch. */ | |
465a859e | 3965 | discard_queued_stop_replies (minus_one_ptid); |
860789c7 GB |
3966 | for_each_inferior (&all_threads, |
3967 | clear_pending_status_callback); | |
9939e131 | 3968 | |
860789c7 | 3969 | if (tracing) |
8336d594 | 3970 | { |
860789c7 | 3971 | if (disconnected_tracing) |
8336d594 | 3972 | { |
860789c7 GB |
3973 | /* Try to enable non-stop/async mode, so we we can |
3974 | both wait for an async socket accept, and handle | |
3975 | async target events simultaneously. There's also | |
3976 | no point either in having the target always stop | |
3977 | all threads, when we're going to pass signals | |
3978 | down without informing GDB. */ | |
3979 | if (!non_stop) | |
3980 | { | |
3981 | if (start_non_stop (1)) | |
3982 | non_stop = 1; | |
3983 | ||
3984 | /* Detaching implicitly resumes all threads; | |
3985 | simply disconnecting does not. */ | |
3986 | } | |
3987 | } | |
3988 | else | |
3989 | { | |
3990 | fprintf (stderr, | |
3991 | "Disconnected tracing disabled; " | |
3992 | "stopping trace run.\n"); | |
3993 | stop_tracing (); | |
8336d594 PA |
3994 | } |
3995 | } | |
860789c7 | 3996 | } |
492d29ea | 3997 | CATCH (exception, RETURN_MASK_ERROR) |
860789c7 | 3998 | { |
608a1e46 PA |
3999 | fflush (stdout); |
4000 | fprintf (stderr, "gdbserver: %s\n", exception.message); | |
4001 | ||
860789c7 | 4002 | if (response_needed) |
8336d594 | 4003 | { |
860789c7 GB |
4004 | write_enn (own_buf); |
4005 | putpkt (own_buf); | |
8336d594 | 4006 | } |
608a1e46 PA |
4007 | |
4008 | if (run_once) | |
4009 | throw_quit ("Quit"); | |
8336d594 | 4010 | } |
492d29ea | 4011 | END_CATCH |
bd99dc85 PA |
4012 | } |
4013 | } | |
01f9e8fa | 4014 | |
860789c7 GB |
4015 | /* Main function. */ |
4016 | ||
4017 | int | |
4018 | main (int argc, char *argv[]) | |
4019 | { | |
860789c7 | 4020 | |
492d29ea | 4021 | TRY |
860789c7 GB |
4022 | { |
4023 | captured_main (argc, argv); | |
4024 | } | |
492d29ea | 4025 | CATCH (exception, RETURN_MASK_ALL) |
860789c7 | 4026 | { |
492d29ea PA |
4027 | if (exception.reason == RETURN_ERROR) |
4028 | { | |
4029 | fflush (stdout); | |
4030 | fprintf (stderr, "%s\n", exception.message); | |
4031 | fprintf (stderr, "Exiting\n"); | |
4032 | exit_code = 1; | |
4033 | } | |
4034 | ||
4035 | exit (exit_code); | |
860789c7 | 4036 | } |
492d29ea | 4037 | END_CATCH |
860789c7 | 4038 | |
492d29ea | 4039 | gdb_assert_not_reached ("captured_main should never return"); |
860789c7 GB |
4040 | } |
4041 | ||
802e8e6d PA |
4042 | /* Process options coming from Z packets for a breakpoint. PACKET is |
4043 | the packet buffer. *PACKET is updated to point to the first char | |
4044 | after the last processed option. */ | |
9f3a5c85 LM |
4045 | |
4046 | static void | |
9aa76cd0 | 4047 | process_point_options (struct gdb_breakpoint *bp, char **packet) |
9f3a5c85 LM |
4048 | { |
4049 | char *dataptr = *packet; | |
d3ce09f5 | 4050 | int persist; |
9f3a5c85 LM |
4051 | |
4052 | /* Check if data has the correct format. */ | |
4053 | if (*dataptr != ';') | |
4054 | return; | |
4055 | ||
4056 | dataptr++; | |
4057 | ||
4058 | while (*dataptr) | |
4059 | { | |
d3ce09f5 SS |
4060 | if (*dataptr == ';') |
4061 | ++dataptr; | |
4062 | ||
4063 | if (*dataptr == 'X') | |
9f3a5c85 | 4064 | { |
d3ce09f5 | 4065 | /* Conditional expression. */ |
d171ca78 | 4066 | if (debug_threads) |
87ce2a04 | 4067 | debug_printf ("Found breakpoint condition.\n"); |
802e8e6d | 4068 | if (!add_breakpoint_condition (bp, &dataptr)) |
8424cc97 | 4069 | dataptr = strchrnul (dataptr, ';'); |
d3ce09f5 | 4070 | } |
61012eef | 4071 | else if (startswith (dataptr, "cmds:")) |
d3ce09f5 SS |
4072 | { |
4073 | dataptr += strlen ("cmds:"); | |
4074 | if (debug_threads) | |
87ce2a04 | 4075 | debug_printf ("Found breakpoint commands %s.\n", dataptr); |
d3ce09f5 SS |
4076 | persist = (*dataptr == '1'); |
4077 | dataptr += 2; | |
802e8e6d | 4078 | if (add_breakpoint_commands (bp, &dataptr, persist)) |
8424cc97 | 4079 | dataptr = strchrnul (dataptr, ';'); |
d3ce09f5 SS |
4080 | } |
4081 | else | |
4082 | { | |
d3ce09f5 SS |
4083 | fprintf (stderr, "Unknown token %c, ignoring.\n", |
4084 | *dataptr); | |
78a99e91 | 4085 | /* Skip tokens until we find one that we recognize. */ |
8424cc97 | 4086 | dataptr = strchrnul (dataptr, ';'); |
9f3a5c85 | 4087 | } |
9f3a5c85 LM |
4088 | } |
4089 | *packet = dataptr; | |
4090 | } | |
4091 | ||
bd99dc85 PA |
4092 | /* Event loop callback that handles a serial event. The first byte in |
4093 | the serial buffer gets us here. We expect characters to arrive at | |
4094 | a brisk pace, so we read the rest of the packet with a blocking | |
4095 | getpkt call. */ | |
01f9e8fa | 4096 | |
8336d594 | 4097 | static int |
bd99dc85 PA |
4098 | process_serial_event (void) |
4099 | { | |
bd99dc85 PA |
4100 | int signal; |
4101 | unsigned int len; | |
764880b7 | 4102 | int res; |
bd99dc85 PA |
4103 | CORE_ADDR mem_addr; |
4104 | unsigned char sig; | |
4105 | int packet_len; | |
4106 | int new_packet_len = -1; | |
4107 | ||
bd99dc85 PA |
4108 | disable_async_io (); |
4109 | ||
4110 | response_needed = 0; | |
4111 | packet_len = getpkt (own_buf); | |
4112 | if (packet_len <= 0) | |
4113 | { | |
bd99dc85 | 4114 | remote_close (); |
8336d594 PA |
4115 | /* Force an event loop break. */ |
4116 | return -1; | |
bd99dc85 PA |
4117 | } |
4118 | response_needed = 1; | |
4119 | ||
e8ca139e | 4120 | char ch = own_buf[0]; |
bd99dc85 PA |
4121 | switch (ch) |
4122 | { | |
4123 | case 'q': | |
4124 | handle_query (own_buf, packet_len, &new_packet_len); | |
4125 | break; | |
4126 | case 'Q': | |
4127 | handle_general_set (own_buf); | |
4128 | break; | |
4129 | case 'D': | |
e8ca139e | 4130 | handle_detach (own_buf); |
bd99dc85 PA |
4131 | break; |
4132 | case '!': | |
4133 | extended_protocol = 1; | |
4134 | write_ok (own_buf); | |
4135 | break; | |
4136 | case '?': | |
4137 | handle_status (own_buf); | |
4138 | break; | |
4139 | case 'H': | |
4140 | if (own_buf[1] == 'c' || own_buf[1] == 'g' || own_buf[1] == 's') | |
4141 | { | |
f8a4e119 | 4142 | require_running_or_break (own_buf); |
95954743 | 4143 | |
96cde54f | 4144 | ptid_t thread_id = read_ptid (&own_buf[2], NULL); |
95954743 | 4145 | |
96cde54f | 4146 | if (thread_id == null_ptid || thread_id == minus_one_ptid) |
95954743 | 4147 | thread_id = null_ptid; |
96cde54f | 4148 | else if (thread_id.is_pid ()) |
95954743 | 4149 | { |
96cde54f SM |
4150 | /* The ptid represents a pid. */ |
4151 | thread_info *thread = find_any_thread_of_pid (thread_id.pid ()); | |
785922a5 SM |
4152 | |
4153 | if (thread == NULL) | |
95954743 PA |
4154 | { |
4155 | write_enn (own_buf); | |
4156 | break; | |
4157 | } | |
4158 | ||
80894984 | 4159 | thread_id = thread->entry.id; |
95954743 | 4160 | } |
bd99dc85 PA |
4161 | else |
4162 | { | |
96cde54f SM |
4163 | /* The ptid represents a lwp/tid. */ |
4164 | if (find_thread_ptid (thread_id) == NULL) | |
c906108c | 4165 | { |
a06660f7 | 4166 | write_enn (own_buf); |
c906108c SS |
4167 | break; |
4168 | } | |
c906108c SS |
4169 | } |
4170 | ||
bd99dc85 | 4171 | if (own_buf[1] == 'g') |
c906108c | 4172 | { |
95954743 | 4173 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 4174 | { |
bd99dc85 PA |
4175 | /* GDB is telling us to choose any thread. Check if |
4176 | the currently selected thread is still valid. If | |
4177 | it is not, select the first available. */ | |
4178 | struct thread_info *thread = | |
4179 | (struct thread_info *) find_inferior_id (&all_threads, | |
4180 | general_thread); | |
4181 | if (thread == NULL) | |
f0db101d PA |
4182 | thread = get_first_thread (); |
4183 | thread_id = thread->entry.id; | |
c906108c | 4184 | } |
bd99dc85 PA |
4185 | |
4186 | general_thread = thread_id; | |
0bfdf32f | 4187 | set_desired_thread (1); |
f0db101d | 4188 | gdb_assert (current_thread != NULL); |
c906108c | 4189 | } |
bd99dc85 PA |
4190 | else if (own_buf[1] == 'c') |
4191 | cont_thread = thread_id; | |
c906108c | 4192 | |
bd99dc85 PA |
4193 | write_ok (own_buf); |
4194 | } | |
4195 | else | |
4196 | { | |
4197 | /* Silently ignore it so that gdb can extend the protocol | |
4198 | without compatibility headaches. */ | |
4199 | own_buf[0] = '\0'; | |
2d717e4f | 4200 | } |
bd99dc85 PA |
4201 | break; |
4202 | case 'g': | |
f8a4e119 | 4203 | require_running_or_break (own_buf); |
219f2f23 PA |
4204 | if (current_traceframe >= 0) |
4205 | { | |
3aee8918 PA |
4206 | struct regcache *regcache |
4207 | = new_register_cache (current_target_desc ()); | |
219f2f23 PA |
4208 | |
4209 | if (fetch_traceframe_registers (current_traceframe, | |
4210 | regcache, -1) == 0) | |
4211 | registers_to_string (regcache, own_buf); | |
4212 | else | |
4213 | write_enn (own_buf); | |
4214 | free_register_cache (regcache); | |
4215 | } | |
4216 | else | |
4217 | { | |
4218 | struct regcache *regcache; | |
4219 | ||
f0db101d PA |
4220 | if (!set_desired_thread (1)) |
4221 | write_enn (own_buf); | |
4222 | else | |
4223 | { | |
4224 | regcache = get_thread_regcache (current_thread, 1); | |
4225 | registers_to_string (regcache, own_buf); | |
4226 | } | |
219f2f23 | 4227 | } |
bd99dc85 PA |
4228 | break; |
4229 | case 'G': | |
f8a4e119 | 4230 | require_running_or_break (own_buf); |
219f2f23 PA |
4231 | if (current_traceframe >= 0) |
4232 | write_enn (own_buf); | |
4233 | else | |
4234 | { | |
442ea881 PA |
4235 | struct regcache *regcache; |
4236 | ||
f0db101d PA |
4237 | if (!set_desired_thread (1)) |
4238 | write_enn (own_buf); | |
4239 | else | |
4240 | { | |
4241 | regcache = get_thread_regcache (current_thread, 1); | |
4242 | registers_from_string (regcache, &own_buf[1]); | |
4243 | write_ok (own_buf); | |
4244 | } | |
442ea881 | 4245 | } |
bd99dc85 PA |
4246 | break; |
4247 | case 'm': | |
f8a4e119 | 4248 | require_running_or_break (own_buf); |
bd99dc85 | 4249 | decode_m_packet (&own_buf[1], &mem_addr, &len); |
764880b7 PA |
4250 | res = gdb_read_memory (mem_addr, mem_buf, len); |
4251 | if (res < 0) | |
bd99dc85 | 4252 | write_enn (own_buf); |
764880b7 | 4253 | else |
e9371aff | 4254 | bin2hex (mem_buf, own_buf, res); |
bd99dc85 PA |
4255 | break; |
4256 | case 'M': | |
f8a4e119 | 4257 | require_running_or_break (own_buf); |
fa593d66 | 4258 | decode_M_packet (&own_buf[1], &mem_addr, &len, &mem_buf); |
90d74c30 | 4259 | if (gdb_write_memory (mem_addr, mem_buf, len) == 0) |
bd99dc85 PA |
4260 | write_ok (own_buf); |
4261 | else | |
4262 | write_enn (own_buf); | |
4263 | break; | |
4264 | case 'X': | |
f8a4e119 | 4265 | require_running_or_break (own_buf); |
bd99dc85 | 4266 | if (decode_X_packet (&own_buf[1], packet_len - 1, |
fa593d66 | 4267 | &mem_addr, &len, &mem_buf) < 0 |
90d74c30 | 4268 | || gdb_write_memory (mem_addr, mem_buf, len) != 0) |
bd99dc85 PA |
4269 | write_enn (own_buf); |
4270 | else | |
4271 | write_ok (own_buf); | |
4272 | break; | |
4273 | case 'C': | |
f8a4e119 | 4274 | require_running_or_break (own_buf); |
a7191e8b | 4275 | hex2bin (own_buf + 1, &sig, 1); |
e053fbc4 PA |
4276 | if (gdb_signal_to_host_p ((enum gdb_signal) sig)) |
4277 | signal = gdb_signal_to_host ((enum gdb_signal) sig); | |
bd99dc85 PA |
4278 | else |
4279 | signal = 0; | |
4280 | myresume (own_buf, 0, signal); | |
4281 | break; | |
4282 | case 'S': | |
f8a4e119 | 4283 | require_running_or_break (own_buf); |
a7191e8b | 4284 | hex2bin (own_buf + 1, &sig, 1); |
e053fbc4 PA |
4285 | if (gdb_signal_to_host_p ((enum gdb_signal) sig)) |
4286 | signal = gdb_signal_to_host ((enum gdb_signal) sig); | |
bd99dc85 PA |
4287 | else |
4288 | signal = 0; | |
4289 | myresume (own_buf, 1, signal); | |
4290 | break; | |
4291 | case 'c': | |
f8a4e119 | 4292 | require_running_or_break (own_buf); |
bd99dc85 PA |
4293 | signal = 0; |
4294 | myresume (own_buf, 0, signal); | |
4295 | break; | |
4296 | case 's': | |
f8a4e119 | 4297 | require_running_or_break (own_buf); |
bd99dc85 PA |
4298 | signal = 0; |
4299 | myresume (own_buf, 1, signal); | |
4300 | break; | |
c6314022 AR |
4301 | case 'Z': /* insert_ ... */ |
4302 | /* Fallthrough. */ | |
4303 | case 'z': /* remove_ ... */ | |
bd99dc85 | 4304 | { |
bd99dc85 | 4305 | char *dataptr; |
aca22551 | 4306 | ULONGEST addr; |
27165294 | 4307 | int kind; |
bd99dc85 | 4308 | char type = own_buf[1]; |
c6314022 | 4309 | int res; |
d993e290 | 4310 | const int insert = ch == 'Z'; |
aca22551 PA |
4311 | char *p = &own_buf[3]; |
4312 | ||
4313 | p = unpack_varlen_hex (p, &addr); | |
27165294 | 4314 | kind = strtol (p + 1, &dataptr, 16); |
c6314022 | 4315 | |
802e8e6d | 4316 | if (insert) |
d993e290 | 4317 | { |
9aa76cd0 | 4318 | struct gdb_breakpoint *bp; |
802e8e6d | 4319 | |
27165294 | 4320 | bp = set_gdb_breakpoint (type, addr, kind, &res); |
802e8e6d | 4321 | if (bp != NULL) |
9f3a5c85 | 4322 | { |
802e8e6d PA |
4323 | res = 0; |
4324 | ||
4325 | /* GDB may have sent us a list of *point parameters to | |
4326 | be evaluated on the target's side. Read such list | |
4327 | here. If we already have a list of parameters, GDB | |
4328 | is telling us to drop that list and use this one | |
4329 | instead. */ | |
0a261ed8 | 4330 | clear_breakpoint_conditions_and_commands (bp); |
802e8e6d | 4331 | process_point_options (bp, &dataptr); |
9f3a5c85 | 4332 | } |
d993e290 | 4333 | } |
802e8e6d | 4334 | else |
27165294 | 4335 | res = delete_gdb_breakpoint (type, addr, kind); |
bd99dc85 | 4336 | |
c6314022 AR |
4337 | if (res == 0) |
4338 | write_ok (own_buf); | |
4339 | else if (res == 1) | |
4340 | /* Unsupported. */ | |
4341 | own_buf[0] = '\0'; | |
bd99dc85 | 4342 | else |
c6314022 | 4343 | write_enn (own_buf); |
bd99dc85 PA |
4344 | break; |
4345 | } | |
4346 | case 'k': | |
4347 | response_needed = 0; | |
4348 | if (!target_running ()) | |
95954743 PA |
4349 | /* The packet we received doesn't make sense - but we can't |
4350 | reply to it, either. */ | |
8336d594 | 4351 | return 0; |
c906108c | 4352 | |
95954743 PA |
4353 | fprintf (stderr, "Killing all inferiors\n"); |
4354 | for_each_inferior (&all_processes, kill_inferior_callback); | |
c906108c | 4355 | |
bd99dc85 PA |
4356 | /* When using the extended protocol, we wait with no program |
4357 | running. The traditional protocol will exit instead. */ | |
4358 | if (extended_protocol) | |
4359 | { | |
4360 | last_status.kind = TARGET_WAITKIND_EXITED; | |
a493e3e2 | 4361 | last_status.value.sig = GDB_SIGNAL_KILL; |
8336d594 | 4362 | return 0; |
bd99dc85 PA |
4363 | } |
4364 | else | |
8336d594 PA |
4365 | exit (0); |
4366 | ||
bd99dc85 PA |
4367 | case 'T': |
4368 | { | |
f8a4e119 | 4369 | require_running_or_break (own_buf); |
95954743 | 4370 | |
96cde54f SM |
4371 | ptid_t thread_id = read_ptid (&own_buf[1], NULL); |
4372 | if (find_thread_ptid (thread_id) == NULL) | |
bd99dc85 PA |
4373 | { |
4374 | write_enn (own_buf); | |
4375 | break; | |
4376 | } | |
4377 | ||
4378 | if (mythread_alive (thread_id)) | |
4379 | write_ok (own_buf); | |
4380 | else | |
4381 | write_enn (own_buf); | |
4382 | } | |
4383 | break; | |
4384 | case 'R': | |
4385 | response_needed = 0; | |
4386 | ||
4387 | /* Restarting the inferior is only supported in the extended | |
4388 | protocol. */ | |
4389 | if (extended_protocol) | |
4390 | { | |
4391 | if (target_running ()) | |
95954743 PA |
4392 | for_each_inferior (&all_processes, |
4393 | kill_inferior_callback); | |
bd99dc85 PA |
4394 | fprintf (stderr, "GDBserver restarting\n"); |
4395 | ||
4396 | /* Wait till we are at 1st instruction in prog. */ | |
2090129c | 4397 | if (program_name != NULL) |
51aee833 | 4398 | { |
2090129c SDJ |
4399 | create_inferior (program_name, program_args); |
4400 | ||
51aee833 YQ |
4401 | if (last_status.kind == TARGET_WAITKIND_STOPPED) |
4402 | { | |
4403 | /* Stopped at the first instruction of the target | |
4404 | process. */ | |
4405 | general_thread = last_ptid; | |
4406 | } | |
4407 | else | |
4408 | { | |
4409 | /* Something went wrong. */ | |
4410 | general_thread = null_ptid; | |
4411 | } | |
4412 | } | |
bd99dc85 PA |
4413 | else |
4414 | { | |
4415 | last_status.kind = TARGET_WAITKIND_EXITED; | |
a493e3e2 | 4416 | last_status.value.sig = GDB_SIGNAL_KILL; |
bd99dc85 | 4417 | } |
8336d594 | 4418 | return 0; |
c906108c SS |
4419 | } |
4420 | else | |
4421 | { | |
bd99dc85 PA |
4422 | /* It is a request we don't understand. Respond with an |
4423 | empty packet so that gdb knows that we don't support this | |
4424 | request. */ | |
4425 | own_buf[0] = '\0'; | |
4426 | break; | |
4427 | } | |
4428 | case 'v': | |
4429 | /* Extended (long) request. */ | |
4430 | handle_v_requests (own_buf, packet_len, &new_packet_len); | |
4431 | break; | |
4432 | ||
4433 | default: | |
4434 | /* It is a request we don't understand. Respond with an empty | |
4435 | packet so that gdb knows that we don't support this | |
4436 | request. */ | |
4437 | own_buf[0] = '\0'; | |
4438 | break; | |
4439 | } | |
4440 | ||
4441 | if (new_packet_len != -1) | |
4442 | putpkt_binary (own_buf, new_packet_len); | |
4443 | else | |
4444 | putpkt (own_buf); | |
4445 | ||
4446 | response_needed = 0; | |
4447 | ||
8336d594 PA |
4448 | if (exit_requested) |
4449 | return -1; | |
4450 | ||
4451 | return 0; | |
c906108c | 4452 | } |
bd99dc85 PA |
4453 | |
4454 | /* Event-loop callback for serial events. */ | |
4455 | ||
8336d594 | 4456 | int |
bd99dc85 PA |
4457 | handle_serial_event (int err, gdb_client_data client_data) |
4458 | { | |
4459 | if (debug_threads) | |
87ce2a04 | 4460 | debug_printf ("handling possible serial event\n"); |
bd99dc85 PA |
4461 | |
4462 | /* Really handle it. */ | |
8336d594 PA |
4463 | if (process_serial_event () < 0) |
4464 | return -1; | |
bd99dc85 | 4465 | |
0bfdf32f | 4466 | /* Be sure to not change the selected thread behind GDB's back. |
bd99dc85 | 4467 | Important in the non-stop mode asynchronous protocol. */ |
0bfdf32f | 4468 | set_desired_thread (1); |
8336d594 PA |
4469 | |
4470 | return 0; | |
bd99dc85 PA |
4471 | } |
4472 | ||
f2faf941 PA |
4473 | /* Push a stop notification on the notification queue. */ |
4474 | ||
4475 | static void | |
4476 | push_stop_notification (ptid_t ptid, struct target_waitstatus *status) | |
4477 | { | |
4478 | struct vstop_notif *vstop_notif = XNEW (struct vstop_notif); | |
4479 | ||
4480 | vstop_notif->status = *status; | |
4481 | vstop_notif->ptid = ptid; | |
4482 | /* Push Stop notification. */ | |
4483 | notif_push (¬if_stop, (struct notif_event *) vstop_notif); | |
4484 | } | |
4485 | ||
bd99dc85 PA |
4486 | /* Event-loop callback for target events. */ |
4487 | ||
8336d594 | 4488 | int |
bd99dc85 PA |
4489 | handle_target_event (int err, gdb_client_data client_data) |
4490 | { | |
4491 | if (debug_threads) | |
87ce2a04 | 4492 | debug_printf ("handling possible target event\n"); |
bd99dc85 | 4493 | |
95954743 PA |
4494 | last_ptid = mywait (minus_one_ptid, &last_status, |
4495 | TARGET_WNOHANG, 1); | |
bd99dc85 | 4496 | |
fa96cb38 PA |
4497 | if (last_status.kind == TARGET_WAITKIND_NO_RESUMED) |
4498 | { | |
f2faf941 PA |
4499 | if (gdb_connected () && report_no_resumed) |
4500 | push_stop_notification (null_ptid, &last_status); | |
fa96cb38 PA |
4501 | } |
4502 | else if (last_status.kind != TARGET_WAITKIND_IGNORE) | |
bd99dc85 | 4503 | { |
8336d594 PA |
4504 | int pid = ptid_get_pid (last_ptid); |
4505 | struct process_info *process = find_process_pid (pid); | |
4506 | int forward_event = !gdb_connected () || process->gdb_detached; | |
4507 | ||
4508 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
4509 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
f9e39928 PA |
4510 | { |
4511 | mark_breakpoints_out (process); | |
bc1e6c81 | 4512 | target_mourn_inferior (last_ptid); |
f9e39928 | 4513 | } |
65706a29 PA |
4514 | else if (last_status.kind == TARGET_WAITKIND_THREAD_EXITED) |
4515 | ; | |
ce1a5b52 | 4516 | else |
d20a8ad9 PA |
4517 | { |
4518 | /* We're reporting this thread as stopped. Update its | |
4519 | "want-stopped" state to what the client wants, until it | |
4520 | gets a new resume action. */ | |
0bfdf32f GB |
4521 | current_thread->last_resume_kind = resume_stop; |
4522 | current_thread->last_status = last_status; | |
d20a8ad9 | 4523 | } |
8336d594 PA |
4524 | |
4525 | if (forward_event) | |
4526 | { | |
4527 | if (!target_running ()) | |
4528 | { | |
4529 | /* The last process exited. We're done. */ | |
4530 | exit (0); | |
4531 | } | |
4532 | ||
65706a29 PA |
4533 | if (last_status.kind == TARGET_WAITKIND_EXITED |
4534 | || last_status.kind == TARGET_WAITKIND_SIGNALLED | |
4535 | || last_status.kind == TARGET_WAITKIND_THREAD_EXITED) | |
4536 | ; | |
4537 | else | |
8336d594 PA |
4538 | { |
4539 | /* A thread stopped with a signal, but gdb isn't | |
4540 | connected to handle it. Pass it down to the | |
4541 | inferior, as if it wasn't being traced. */ | |
049a8570 | 4542 | enum gdb_signal signal; |
8336d594 PA |
4543 | |
4544 | if (debug_threads) | |
87ce2a04 DE |
4545 | debug_printf ("GDB not connected; forwarding event %d for" |
4546 | " [%s]\n", | |
4547 | (int) last_status.kind, | |
4548 | target_pid_to_str (last_ptid)); | |
8336d594 | 4549 | |
65706a29 | 4550 | if (last_status.kind == TARGET_WAITKIND_STOPPED) |
049a8570 | 4551 | signal = last_status.value.sig; |
65706a29 | 4552 | else |
049a8570 SDJ |
4553 | signal = GDB_SIGNAL_0; |
4554 | target_continue (last_ptid, signal); | |
8336d594 | 4555 | } |
8336d594 PA |
4556 | } |
4557 | else | |
f2faf941 | 4558 | push_stop_notification (last_ptid, &last_status); |
bd99dc85 PA |
4559 | } |
4560 | ||
0bfdf32f | 4561 | /* Be sure to not change the selected thread behind GDB's back. |
bd99dc85 | 4562 | Important in the non-stop mode asynchronous protocol. */ |
0bfdf32f | 4563 | set_desired_thread (1); |
8336d594 PA |
4564 | |
4565 | return 0; | |
bd99dc85 | 4566 | } |
6d580b63 YQ |
4567 | |
4568 | #if GDB_SELF_TEST | |
4569 | namespace selftests | |
4570 | { | |
4571 | ||
4572 | void | |
4573 | reset () | |
4574 | {} | |
4575 | ||
4576 | } // namespace selftests | |
4577 | #endif /* GDB_SELF_TEST */ |