Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Main code for remote server for GDB. |
e2882c85 | 2 | Copyright (C) 1989-2018 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" | |
25e3c82c SDJ |
42 | #include "filenames.h" |
43 | #include "pathstuff.h" | |
2090129c | 44 | |
6d580b63 YQ |
45 | #include "common/selftest.h" |
46 | ||
f8a4e119 SM |
47 | #define require_running_or_return(BUF) \ |
48 | if (!target_running ()) \ | |
49 | { \ | |
50 | write_enn (BUF); \ | |
51 | return; \ | |
52 | } | |
53 | ||
54 | #define require_running_or_break(BUF) \ | |
55 | if (!target_running ()) \ | |
56 | { \ | |
57 | write_enn (BUF); \ | |
58 | break; \ | |
59 | } | |
60 | ||
b4987c95 SDJ |
61 | /* String containing the current directory (what getwd would return). */ |
62 | ||
63 | char *current_directory; | |
64 | ||
2090129c SDJ |
65 | /* The environment to pass to the inferior when creating it. */ |
66 | ||
9a6c7d9c | 67 | static gdb_environ our_environ; |
2090129c SDJ |
68 | |
69 | /* Start the inferior using a shell. */ | |
70 | ||
71 | /* We always try to start the inferior using a shell. */ | |
72 | ||
73 | int startup_with_shell = 1; | |
a9fa9f7d | 74 | |
0d62e5e8 DJ |
75 | int server_waiting; |
76 | ||
17b1509a | 77 | static int extended_protocol; |
2d717e4f DJ |
78 | static int response_needed; |
79 | static int exit_requested; | |
80 | ||
03f2bd59 JK |
81 | /* --once: Exit after the first connection has closed. */ |
82 | int run_once; | |
83 | ||
f2faf941 PA |
84 | /* Whether to report TARGET_WAITKING_NO_RESUMED events. */ |
85 | static int report_no_resumed; | |
86 | ||
bd99dc85 | 87 | int non_stop; |
03583c20 | 88 | |
25e3c82c SDJ |
89 | static struct { |
90 | /* Set the PROGRAM_PATH. Here we adjust the path of the provided | |
91 | binary if needed. */ | |
92 | void set (gdb::unique_xmalloc_ptr<char> &&path) | |
93 | { | |
94 | m_path = std::move (path); | |
95 | ||
96 | /* Make sure we're using the absolute path of the inferior when | |
97 | creating it. */ | |
98 | if (!contains_dir_separator (m_path.get ())) | |
99 | { | |
100 | int reg_file_errno; | |
101 | ||
102 | /* Check if the file is in our CWD. If it is, then we prefix | |
103 | its name with CURRENT_DIRECTORY. Otherwise, we leave the | |
104 | name as-is because we'll try searching for it in $PATH. */ | |
105 | if (is_regular_file (m_path.get (), ®_file_errno)) | |
106 | m_path = gdb_abspath (m_path.get ()); | |
107 | } | |
108 | } | |
109 | ||
110 | /* Return the PROGRAM_PATH. */ | |
111 | char *get () | |
112 | { return m_path.get (); } | |
113 | ||
114 | private: | |
115 | /* The program name, adjusted if needed. */ | |
116 | gdb::unique_xmalloc_ptr<char> m_path; | |
117 | } program_path; | |
2090129c SDJ |
118 | static std::vector<char *> program_args; |
119 | static std::string wrapper_argv; | |
2d717e4f | 120 | |
a9fa9f7d DJ |
121 | /* The PID of the originally created or attached inferior. Used to |
122 | send signals to the process when GDB sends us an asynchronous interrupt | |
123 | (user hitting Control-C in the client), and to wait for the child to exit | |
124 | when no longer debugging it. */ | |
125 | ||
a1928bad | 126 | unsigned long signal_pid; |
a9fa9f7d | 127 | |
ec56be1b PA |
128 | /* Set if you want to disable optional thread related packets support |
129 | in gdbserver, for the sake of testing GDB against stubs that don't | |
130 | support them. */ | |
131 | int disable_packet_vCont; | |
132 | int disable_packet_Tthread; | |
133 | int disable_packet_qC; | |
134 | int disable_packet_qfThreadInfo; | |
135 | ||
bd99dc85 PA |
136 | static unsigned char *mem_buf; |
137 | ||
14a00470 YQ |
138 | /* A sub-class of 'struct notif_event' for stop, holding information |
139 | relative to a single stop reply. We keep a queue of these to | |
140 | push to GDB in non-stop mode. */ | |
141 | ||
bd99dc85 PA |
142 | struct vstop_notif |
143 | { | |
14a00470 | 144 | struct notif_event base; |
bd99dc85 PA |
145 | |
146 | /* Thread or process that got the event. */ | |
95954743 | 147 | ptid_t ptid; |
bd99dc85 PA |
148 | |
149 | /* Event info. */ | |
150 | struct target_waitstatus status; | |
151 | }; | |
152 | ||
f4abbc16 MM |
153 | /* The current btrace configuration. This is gdbserver's mirror of GDB's |
154 | btrace configuration. */ | |
155 | static struct btrace_config current_btrace_conf; | |
156 | ||
14a00470 | 157 | DEFINE_QUEUE_P (notif_event_p); |
bd99dc85 | 158 | |
c12a5089 SC |
159 | /* The client remote protocol state. */ |
160 | ||
161 | static client_state g_client_state; | |
162 | ||
163 | client_state & | |
164 | get_client_state () | |
165 | { | |
166 | client_state &cs = g_client_state; | |
167 | return cs; | |
168 | } | |
169 | ||
170 | ||
bd99dc85 PA |
171 | /* Put a stop reply to the stop reply queue. */ |
172 | ||
173 | static void | |
95954743 | 174 | queue_stop_reply (ptid_t ptid, struct target_waitstatus *status) |
bd99dc85 | 175 | { |
8d749320 | 176 | struct vstop_notif *new_notif = XNEW (struct vstop_notif); |
bd99dc85 | 177 | |
bd99dc85 PA |
178 | new_notif->ptid = ptid; |
179 | new_notif->status = *status; | |
180 | ||
14a00470 | 181 | notif_event_enque (¬if_stop, (struct notif_event *) new_notif); |
bd99dc85 PA |
182 | } |
183 | ||
14a00470 | 184 | static int |
465a859e PA |
185 | remove_all_on_match_ptid (QUEUE (notif_event_p) *q, |
186 | QUEUE_ITER (notif_event_p) *iter, | |
187 | struct notif_event *event, | |
188 | void *data) | |
bd99dc85 | 189 | { |
465a859e PA |
190 | ptid_t filter_ptid = *(ptid_t *) data; |
191 | struct vstop_notif *vstop_event = (struct vstop_notif *) event; | |
d20a8ad9 | 192 | |
26a57c92 | 193 | if (vstop_event->ptid.matches (filter_ptid)) |
bd99dc85 | 194 | { |
14a00470 YQ |
195 | if (q->free_func != NULL) |
196 | q->free_func (event); | |
197 | ||
198 | QUEUE_remove_elem (notif_event_p, q, iter); | |
bd99dc85 | 199 | } |
14a00470 YQ |
200 | |
201 | return 1; | |
bd99dc85 PA |
202 | } |
203 | ||
465a859e | 204 | /* See server.h. */ |
bd99dc85 | 205 | |
465a859e PA |
206 | void |
207 | discard_queued_stop_replies (ptid_t ptid) | |
bd99dc85 | 208 | { |
14a00470 | 209 | QUEUE_iterate (notif_event_p, notif_stop.queue, |
465a859e | 210 | remove_all_on_match_ptid, &ptid); |
bd99dc85 PA |
211 | } |
212 | ||
bd99dc85 | 213 | static void |
14a00470 | 214 | vstop_notif_reply (struct notif_event *event, char *own_buf) |
bd99dc85 | 215 | { |
14a00470 YQ |
216 | struct vstop_notif *vstop = (struct vstop_notif *) event; |
217 | ||
218 | prepare_resume_reply (own_buf, vstop->ptid, &vstop->status); | |
bd99dc85 PA |
219 | } |
220 | ||
5a04c4cf PA |
221 | /* QUEUE_iterate callback helper for in_queued_stop_replies. */ |
222 | ||
223 | static int | |
224 | in_queued_stop_replies_ptid (QUEUE (notif_event_p) *q, | |
225 | QUEUE_ITER (notif_event_p) *iter, | |
226 | struct notif_event *event, | |
227 | void *data) | |
228 | { | |
229 | ptid_t filter_ptid = *(ptid_t *) data; | |
230 | struct vstop_notif *vstop_event = (struct vstop_notif *) event; | |
231 | ||
26a57c92 | 232 | if (vstop_event->ptid.matches (filter_ptid)) |
5a04c4cf PA |
233 | return 0; |
234 | ||
235 | /* Don't resume fork children that GDB does not know about yet. */ | |
236 | if ((vstop_event->status.kind == TARGET_WAITKIND_FORKED | |
237 | || vstop_event->status.kind == TARGET_WAITKIND_VFORKED) | |
26a57c92 | 238 | && vstop_event->status.value.related_pid.matches (filter_ptid)) |
5a04c4cf PA |
239 | return 0; |
240 | ||
241 | return 1; | |
242 | } | |
243 | ||
244 | /* See server.h. */ | |
245 | ||
246 | int | |
247 | in_queued_stop_replies (ptid_t ptid) | |
248 | { | |
249 | return !QUEUE_iterate (notif_event_p, notif_stop.queue, | |
250 | in_queued_stop_replies_ptid, &ptid); | |
251 | } | |
252 | ||
14a00470 YQ |
253 | struct notif_server notif_stop = |
254 | { | |
255 | "vStopped", "Stop", NULL, vstop_notif_reply, | |
256 | }; | |
257 | ||
2d717e4f DJ |
258 | static int |
259 | target_running (void) | |
260 | { | |
649ebbca | 261 | return get_first_thread () != NULL; |
2d717e4f DJ |
262 | } |
263 | ||
2090129c | 264 | /* See common/common-inferior.h. */ |
ccd213ac | 265 | |
2090129c SDJ |
266 | const char * |
267 | get_exec_wrapper () | |
268 | { | |
269 | return !wrapper_argv.empty () ? wrapper_argv.c_str () : NULL; | |
270 | } | |
eb97750b | 271 | |
2090129c | 272 | /* See common/common-inferior.h. */ |
eb97750b | 273 | |
2090129c SDJ |
274 | char * |
275 | get_exec_file (int err) | |
276 | { | |
25e3c82c | 277 | if (err && program_path.get () == NULL) |
2090129c | 278 | error (_("No executable file specified.")); |
ccd213ac | 279 | |
25e3c82c | 280 | return program_path.get (); |
2090129c | 281 | } |
5b1c542e | 282 | |
2090129c | 283 | /* See server.h. */ |
d20a8ad9 | 284 | |
9a6c7d9c | 285 | gdb_environ * |
2090129c SDJ |
286 | get_environ () |
287 | { | |
9a6c7d9c | 288 | return &our_environ; |
c906108c SS |
289 | } |
290 | ||
45b7b345 | 291 | static int |
5b1c542e | 292 | attach_inferior (int pid) |
45b7b345 | 293 | { |
c12a5089 | 294 | client_state &cs = get_client_state (); |
45b7b345 DJ |
295 | /* myattach should return -1 if attaching is unsupported, |
296 | 0 if it succeeded, and call error() otherwise. */ | |
a9fa9f7d | 297 | |
45b7b345 DJ |
298 | if (myattach (pid) != 0) |
299 | return -1; | |
300 | ||
6910d122 | 301 | fprintf (stderr, "Attached; pid = %d\n", pid); |
b80864fb | 302 | fflush (stderr); |
6910d122 | 303 | |
a9fa9f7d DJ |
304 | /* FIXME - It may be that we should get the SIGNAL_PID from the |
305 | attach function, so that it can be the main thread instead of | |
306 | whichever we were told to attach to. */ | |
307 | signal_pid = pid; | |
308 | ||
bd99dc85 PA |
309 | if (!non_stop) |
310 | { | |
f2907e49 | 311 | cs.last_ptid = mywait (ptid_t (pid), &cs.last_status, 0, 0); |
bd99dc85 PA |
312 | |
313 | /* GDB knows to ignore the first SIGSTOP after attaching to a running | |
314 | process using the "attach" command, but this is different; it's | |
315 | just using "target remote". Pretend it's just starting up. */ | |
c12a5089 SC |
316 | if (cs.last_status.kind == TARGET_WAITKIND_STOPPED |
317 | && cs.last_status.value.sig == GDB_SIGNAL_STOP) | |
318 | cs.last_status.value.sig = GDB_SIGNAL_TRAP; | |
d20a8ad9 | 319 | |
0bfdf32f | 320 | current_thread->last_resume_kind = resume_stop; |
c12a5089 | 321 | current_thread->last_status = cs.last_status; |
bd99dc85 | 322 | } |
9db87ebd | 323 | |
45b7b345 DJ |
324 | return 0; |
325 | } | |
326 | ||
c906108c | 327 | extern int remote_debug; |
ce3a066d | 328 | |
0876f84a DJ |
329 | /* Decode a qXfer read request. Return 0 if everything looks OK, |
330 | or -1 otherwise. */ | |
331 | ||
332 | static int | |
d08aafef | 333 | decode_xfer_read (char *buf, CORE_ADDR *ofs, unsigned int *len) |
0876f84a | 334 | { |
d08aafef PA |
335 | /* After the read marker and annex, qXfer looks like a |
336 | traditional 'm' packet. */ | |
337 | decode_m_packet (buf, ofs, len); | |
338 | ||
339 | return 0; | |
340 | } | |
341 | ||
342 | static int | |
343 | decode_xfer (char *buf, char **object, char **rw, char **annex, char **offset) | |
344 | { | |
345 | /* Extract and NUL-terminate the object. */ | |
346 | *object = buf; | |
347 | while (*buf && *buf != ':') | |
348 | buf++; | |
349 | if (*buf == '\0') | |
350 | return -1; | |
351 | *buf++ = 0; | |
352 | ||
353 | /* Extract and NUL-terminate the read/write action. */ | |
354 | *rw = buf; | |
355 | while (*buf && *buf != ':') | |
356 | buf++; | |
357 | if (*buf == '\0') | |
358 | return -1; | |
359 | *buf++ = 0; | |
360 | ||
0876f84a DJ |
361 | /* Extract and NUL-terminate the annex. */ |
362 | *annex = buf; | |
363 | while (*buf && *buf != ':') | |
364 | buf++; | |
365 | if (*buf == '\0') | |
366 | return -1; | |
367 | *buf++ = 0; | |
368 | ||
d08aafef | 369 | *offset = buf; |
0876f84a DJ |
370 | return 0; |
371 | } | |
372 | ||
373 | /* Write the response to a successful qXfer read. Returns the | |
374 | length of the (binary) data stored in BUF, corresponding | |
375 | to as much of DATA/LEN as we could fit. IS_MORE controls | |
376 | the first character of the response. */ | |
377 | static int | |
f98cd059 | 378 | write_qxfer_response (char *buf, const gdb_byte *data, int len, int is_more) |
0876f84a DJ |
379 | { |
380 | int out_len; | |
381 | ||
382 | if (is_more) | |
383 | buf[0] = 'm'; | |
384 | else | |
385 | buf[0] = 'l'; | |
386 | ||
124e13d9 SM |
387 | return remote_escape_output (data, len, 1, (unsigned char *) buf + 1, |
388 | &out_len, PBUFSIZ - 2) + 1; | |
0876f84a DJ |
389 | } |
390 | ||
f4abbc16 | 391 | /* Handle btrace enabling in BTS format. */ |
9accd112 | 392 | |
9ee23a85 | 393 | static void |
f4abbc16 | 394 | handle_btrace_enable_bts (struct thread_info *thread) |
9accd112 MM |
395 | { |
396 | if (thread->btrace != NULL) | |
9ee23a85 | 397 | error (_("Btrace already enabled.")); |
9accd112 | 398 | |
f4abbc16 | 399 | current_btrace_conf.format = BTRACE_FORMAT_BTS; |
9c80ecd6 | 400 | thread->btrace = target_enable_btrace (thread->id, ¤t_btrace_conf); |
9accd112 MM |
401 | } |
402 | ||
bc504a31 | 403 | /* Handle btrace enabling in Intel Processor Trace format. */ |
b20a6524 | 404 | |
9ee23a85 | 405 | static void |
b20a6524 MM |
406 | handle_btrace_enable_pt (struct thread_info *thread) |
407 | { | |
408 | if (thread->btrace != NULL) | |
9ee23a85 | 409 | error (_("Btrace already enabled.")); |
b20a6524 MM |
410 | |
411 | current_btrace_conf.format = BTRACE_FORMAT_PT; | |
9c80ecd6 | 412 | thread->btrace = target_enable_btrace (thread->id, ¤t_btrace_conf); |
b20a6524 MM |
413 | } |
414 | ||
9accd112 MM |
415 | /* Handle btrace disabling. */ |
416 | ||
9ee23a85 | 417 | static void |
9accd112 MM |
418 | handle_btrace_disable (struct thread_info *thread) |
419 | { | |
420 | ||
421 | if (thread->btrace == NULL) | |
9ee23a85 | 422 | error (_("Branch tracing not enabled.")); |
9accd112 MM |
423 | |
424 | if (target_disable_btrace (thread->btrace) != 0) | |
9ee23a85 | 425 | error (_("Could not disable branch tracing.")); |
9accd112 MM |
426 | |
427 | thread->btrace = NULL; | |
9accd112 MM |
428 | } |
429 | ||
430 | /* Handle the "Qbtrace" packet. */ | |
431 | ||
432 | static int | |
433 | handle_btrace_general_set (char *own_buf) | |
434 | { | |
c12a5089 | 435 | client_state &cs = get_client_state (); |
9accd112 | 436 | struct thread_info *thread; |
9accd112 MM |
437 | char *op; |
438 | ||
61012eef | 439 | if (!startswith (own_buf, "Qbtrace:")) |
9accd112 MM |
440 | return 0; |
441 | ||
442 | op = own_buf + strlen ("Qbtrace:"); | |
443 | ||
d7e15655 TT |
444 | if (cs.general_thread == null_ptid |
445 | || cs.general_thread == minus_one_ptid) | |
9accd112 MM |
446 | { |
447 | strcpy (own_buf, "E.Must select a single thread."); | |
448 | return -1; | |
449 | } | |
450 | ||
c12a5089 | 451 | thread = find_thread_ptid (cs.general_thread); |
9accd112 MM |
452 | if (thread == NULL) |
453 | { | |
454 | strcpy (own_buf, "E.No such thread."); | |
455 | return -1; | |
456 | } | |
457 | ||
9ee23a85 MM |
458 | TRY |
459 | { | |
460 | if (strcmp (op, "bts") == 0) | |
461 | handle_btrace_enable_bts (thread); | |
462 | else if (strcmp (op, "pt") == 0) | |
463 | handle_btrace_enable_pt (thread); | |
464 | else if (strcmp (op, "off") == 0) | |
465 | handle_btrace_disable (thread); | |
466 | else | |
467 | error (_("Bad Qbtrace operation. Use bts, pt, or off.")); | |
468 | ||
469 | write_ok (own_buf); | |
470 | } | |
471 | CATCH (exception, RETURN_MASK_ERROR) | |
472 | { | |
473 | sprintf (own_buf, "E.%s", exception.message); | |
474 | } | |
475 | END_CATCH | |
9accd112 MM |
476 | |
477 | return 1; | |
478 | } | |
479 | ||
d33501a5 MM |
480 | /* Handle the "Qbtrace-conf" packet. */ |
481 | ||
482 | static int | |
483 | handle_btrace_conf_general_set (char *own_buf) | |
484 | { | |
c12a5089 | 485 | client_state &cs = get_client_state (); |
d33501a5 MM |
486 | struct thread_info *thread; |
487 | char *op; | |
488 | ||
61012eef | 489 | if (!startswith (own_buf, "Qbtrace-conf:")) |
d33501a5 MM |
490 | return 0; |
491 | ||
492 | op = own_buf + strlen ("Qbtrace-conf:"); | |
493 | ||
d7e15655 TT |
494 | if (cs.general_thread == null_ptid |
495 | || cs.general_thread == minus_one_ptid) | |
d33501a5 MM |
496 | { |
497 | strcpy (own_buf, "E.Must select a single thread."); | |
498 | return -1; | |
499 | } | |
500 | ||
c12a5089 | 501 | thread = find_thread_ptid (cs.general_thread); |
d33501a5 MM |
502 | if (thread == NULL) |
503 | { | |
504 | strcpy (own_buf, "E.No such thread."); | |
505 | return -1; | |
506 | } | |
507 | ||
61012eef | 508 | if (startswith (op, "bts:size=")) |
d33501a5 MM |
509 | { |
510 | unsigned long size; | |
511 | char *endp = NULL; | |
512 | ||
513 | errno = 0; | |
514 | size = strtoul (op + strlen ("bts:size="), &endp, 16); | |
515 | if (endp == NULL || *endp != 0 || errno != 0 || size > UINT_MAX) | |
516 | { | |
517 | strcpy (own_buf, "E.Bad size value."); | |
518 | return -1; | |
519 | } | |
520 | ||
521 | current_btrace_conf.bts.size = (unsigned int) size; | |
522 | } | |
b20a6524 MM |
523 | else if (strncmp (op, "pt:size=", strlen ("pt:size=")) == 0) |
524 | { | |
525 | unsigned long size; | |
526 | char *endp = NULL; | |
527 | ||
528 | errno = 0; | |
529 | size = strtoul (op + strlen ("pt:size="), &endp, 16); | |
530 | if (endp == NULL || *endp != 0 || errno != 0 || size > UINT_MAX) | |
531 | { | |
532 | strcpy (own_buf, "E.Bad size value."); | |
533 | return -1; | |
534 | } | |
535 | ||
536 | current_btrace_conf.pt.size = (unsigned int) size; | |
537 | } | |
d33501a5 MM |
538 | else |
539 | { | |
540 | strcpy (own_buf, "E.Bad Qbtrace configuration option."); | |
541 | return -1; | |
542 | } | |
543 | ||
544 | write_ok (own_buf); | |
545 | return 1; | |
546 | } | |
547 | ||
89be2091 | 548 | /* Handle all of the extended 'Q' packets. */ |
ae1ada35 DE |
549 | |
550 | static void | |
89be2091 DJ |
551 | handle_general_set (char *own_buf) |
552 | { | |
c12a5089 | 553 | client_state &cs = get_client_state (); |
61012eef | 554 | if (startswith (own_buf, "QPassSignals:")) |
89be2091 | 555 | { |
a493e3e2 | 556 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
89be2091 DJ |
557 | const char *p = own_buf + strlen ("QPassSignals:"); |
558 | CORE_ADDR cursig; | |
559 | ||
560 | p = decode_address_to_semicolon (&cursig, p); | |
561 | for (i = 0; i < numsigs; i++) | |
562 | { | |
563 | if (i == cursig) | |
564 | { | |
c12a5089 | 565 | cs.pass_signals[i] = 1; |
89be2091 DJ |
566 | if (*p == '\0') |
567 | /* Keep looping, to clear the remaining signals. */ | |
568 | cursig = -1; | |
569 | else | |
570 | p = decode_address_to_semicolon (&cursig, p); | |
571 | } | |
572 | else | |
c12a5089 | 573 | cs.pass_signals[i] = 0; |
89be2091 DJ |
574 | } |
575 | strcpy (own_buf, "OK"); | |
576 | return; | |
577 | } | |
578 | ||
61012eef | 579 | if (startswith (own_buf, "QProgramSignals:")) |
9b224c5e | 580 | { |
a493e3e2 | 581 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
9b224c5e PA |
582 | const char *p = own_buf + strlen ("QProgramSignals:"); |
583 | CORE_ADDR cursig; | |
584 | ||
c12a5089 | 585 | cs.program_signals_p = 1; |
9b224c5e PA |
586 | |
587 | p = decode_address_to_semicolon (&cursig, p); | |
588 | for (i = 0; i < numsigs; i++) | |
589 | { | |
590 | if (i == cursig) | |
591 | { | |
c12a5089 | 592 | cs.program_signals[i] = 1; |
9b224c5e PA |
593 | if (*p == '\0') |
594 | /* Keep looping, to clear the remaining signals. */ | |
595 | cursig = -1; | |
596 | else | |
597 | p = decode_address_to_semicolon (&cursig, p); | |
598 | } | |
599 | else | |
c12a5089 | 600 | cs.program_signals[i] = 0; |
9b224c5e PA |
601 | } |
602 | strcpy (own_buf, "OK"); | |
603 | return; | |
604 | } | |
605 | ||
82075af2 JS |
606 | if (startswith (own_buf, "QCatchSyscalls:")) |
607 | { | |
608 | const char *p = own_buf + sizeof ("QCatchSyscalls:") - 1; | |
609 | int enabled = -1; | |
610 | CORE_ADDR sysno; | |
611 | struct process_info *process; | |
612 | ||
613 | if (!target_running () || !target_supports_catch_syscall ()) | |
614 | { | |
615 | write_enn (own_buf); | |
616 | return; | |
617 | } | |
618 | ||
619 | if (strcmp (p, "0") == 0) | |
620 | enabled = 0; | |
621 | else if (p[0] == '1' && (p[1] == ';' || p[1] == '\0')) | |
622 | enabled = 1; | |
623 | else | |
624 | { | |
625 | fprintf (stderr, "Unknown catch-syscalls mode requested: %s\n", | |
626 | own_buf); | |
627 | write_enn (own_buf); | |
628 | return; | |
629 | } | |
630 | ||
631 | process = current_process (); | |
f27866ba | 632 | process->syscalls_to_catch.clear (); |
82075af2 JS |
633 | |
634 | if (enabled) | |
635 | { | |
636 | p += 1; | |
637 | if (*p == ';') | |
638 | { | |
639 | p += 1; | |
640 | while (*p != '\0') | |
641 | { | |
642 | p = decode_address_to_semicolon (&sysno, p); | |
f27866ba | 643 | process->syscalls_to_catch.push_back (sysno); |
82075af2 JS |
644 | } |
645 | } | |
646 | else | |
f27866ba | 647 | process->syscalls_to_catch.push_back (ANY_SYSCALL); |
82075af2 JS |
648 | } |
649 | ||
650 | write_ok (own_buf); | |
651 | return; | |
652 | } | |
653 | ||
0a2dde4a SDJ |
654 | if (strcmp (own_buf, "QEnvironmentReset") == 0) |
655 | { | |
656 | our_environ = gdb_environ::from_host_environ (); | |
657 | ||
658 | write_ok (own_buf); | |
659 | return; | |
660 | } | |
661 | ||
662 | if (startswith (own_buf, "QEnvironmentHexEncoded:")) | |
663 | { | |
664 | const char *p = own_buf + sizeof ("QEnvironmentHexEncoded:") - 1; | |
665 | /* The final form of the environment variable. FINAL_VAR will | |
666 | hold the 'VAR=VALUE' format. */ | |
667 | std::string final_var = hex2str (p); | |
668 | std::string var_name, var_value; | |
669 | ||
670 | if (remote_debug) | |
671 | { | |
672 | debug_printf (_("[QEnvironmentHexEncoded received '%s']\n"), p); | |
673 | debug_printf (_("[Environment variable to be set: '%s']\n"), | |
674 | final_var.c_str ()); | |
675 | debug_flush (); | |
676 | } | |
677 | ||
678 | size_t pos = final_var.find ('='); | |
679 | if (pos == std::string::npos) | |
680 | { | |
681 | warning (_("Unexpected format for environment variable: '%s'"), | |
682 | final_var.c_str ()); | |
683 | write_enn (own_buf); | |
684 | return; | |
685 | } | |
686 | ||
687 | var_name = final_var.substr (0, pos); | |
688 | var_value = final_var.substr (pos + 1, std::string::npos); | |
689 | ||
690 | our_environ.set (var_name.c_str (), var_value.c_str ()); | |
691 | ||
692 | write_ok (own_buf); | |
693 | return; | |
694 | } | |
695 | ||
696 | if (startswith (own_buf, "QEnvironmentUnset:")) | |
697 | { | |
698 | const char *p = own_buf + sizeof ("QEnvironmentUnset:") - 1; | |
699 | std::string varname = hex2str (p); | |
700 | ||
701 | if (remote_debug) | |
702 | { | |
703 | debug_printf (_("[QEnvironmentUnset received '%s']\n"), p); | |
704 | debug_printf (_("[Environment variable to be unset: '%s']\n"), | |
705 | varname.c_str ()); | |
706 | debug_flush (); | |
707 | } | |
708 | ||
709 | our_environ.unset (varname.c_str ()); | |
710 | ||
711 | write_ok (own_buf); | |
712 | return; | |
713 | } | |
714 | ||
a6f3e723 SL |
715 | if (strcmp (own_buf, "QStartNoAckMode") == 0) |
716 | { | |
717 | if (remote_debug) | |
718 | { | |
4eefa7bc PA |
719 | debug_printf ("[noack mode enabled]\n"); |
720 | debug_flush (); | |
a6f3e723 SL |
721 | } |
722 | ||
c12a5089 | 723 | cs.noack_mode = 1; |
a6f3e723 SL |
724 | write_ok (own_buf); |
725 | return; | |
726 | } | |
727 | ||
61012eef | 728 | if (startswith (own_buf, "QNonStop:")) |
bd99dc85 PA |
729 | { |
730 | char *mode = own_buf + 9; | |
731 | int req = -1; | |
b2333d22 | 732 | const char *req_str; |
bd99dc85 PA |
733 | |
734 | if (strcmp (mode, "0") == 0) | |
735 | req = 0; | |
736 | else if (strcmp (mode, "1") == 0) | |
737 | req = 1; | |
738 | else | |
739 | { | |
740 | /* We don't know what this mode is, so complain to | |
741 | GDB. */ | |
742 | fprintf (stderr, "Unknown non-stop mode requested: %s\n", | |
743 | own_buf); | |
744 | write_enn (own_buf); | |
745 | return; | |
746 | } | |
747 | ||
748 | req_str = req ? "non-stop" : "all-stop"; | |
749 | if (start_non_stop (req) != 0) | |
750 | { | |
751 | fprintf (stderr, "Setting %s mode failed\n", req_str); | |
752 | write_enn (own_buf); | |
753 | return; | |
754 | } | |
755 | ||
756 | non_stop = req; | |
757 | ||
758 | if (remote_debug) | |
4eefa7bc | 759 | debug_printf ("[%s mode enabled]\n", req_str); |
bd99dc85 PA |
760 | |
761 | write_ok (own_buf); | |
762 | return; | |
763 | } | |
764 | ||
61012eef | 765 | if (startswith (own_buf, "QDisableRandomization:")) |
03583c20 UW |
766 | { |
767 | char *packet = own_buf + strlen ("QDisableRandomization:"); | |
768 | ULONGEST setting; | |
769 | ||
770 | unpack_varlen_hex (packet, &setting); | |
c12a5089 | 771 | cs.disable_randomization = setting; |
03583c20 UW |
772 | |
773 | if (remote_debug) | |
774 | { | |
c12a5089 | 775 | debug_printf (cs.disable_randomization |
4eefa7bc PA |
776 | ? "[address space randomization disabled]\n" |
777 | : "[address space randomization enabled]\n"); | |
03583c20 UW |
778 | } |
779 | ||
780 | write_ok (own_buf); | |
781 | return; | |
782 | } | |
783 | ||
219f2f23 PA |
784 | if (target_supports_tracepoints () |
785 | && handle_tracepoint_general_set (own_buf)) | |
786 | return; | |
787 | ||
61012eef | 788 | if (startswith (own_buf, "QAgent:")) |
d1feda86 YQ |
789 | { |
790 | char *mode = own_buf + strlen ("QAgent:"); | |
791 | int req = 0; | |
792 | ||
793 | if (strcmp (mode, "0") == 0) | |
794 | req = 0; | |
795 | else if (strcmp (mode, "1") == 0) | |
796 | req = 1; | |
797 | else | |
798 | { | |
799 | /* We don't know what this value is, so complain to GDB. */ | |
800 | sprintf (own_buf, "E.Unknown QAgent value"); | |
801 | return; | |
802 | } | |
803 | ||
804 | /* Update the flag. */ | |
805 | use_agent = req; | |
806 | if (remote_debug) | |
4eefa7bc | 807 | debug_printf ("[%s agent]\n", req ? "Enable" : "Disable"); |
d1feda86 YQ |
808 | write_ok (own_buf); |
809 | return; | |
810 | } | |
811 | ||
9accd112 MM |
812 | if (handle_btrace_general_set (own_buf)) |
813 | return; | |
814 | ||
d33501a5 MM |
815 | if (handle_btrace_conf_general_set (own_buf)) |
816 | return; | |
817 | ||
65706a29 PA |
818 | if (startswith (own_buf, "QThreadEvents:")) |
819 | { | |
820 | char *mode = own_buf + strlen ("QThreadEvents:"); | |
821 | enum tribool req = TRIBOOL_UNKNOWN; | |
822 | ||
823 | if (strcmp (mode, "0") == 0) | |
824 | req = TRIBOOL_FALSE; | |
825 | else if (strcmp (mode, "1") == 0) | |
826 | req = TRIBOOL_TRUE; | |
827 | else | |
828 | { | |
65706a29 PA |
829 | /* We don't know what this mode is, so complain to GDB. */ |
830 | sprintf (own_buf, "E.Unknown thread-events mode requested: %s\n", | |
b9671caf | 831 | mode); |
65706a29 PA |
832 | return; |
833 | } | |
834 | ||
c12a5089 | 835 | cs.report_thread_events = (req == TRIBOOL_TRUE); |
65706a29 PA |
836 | |
837 | if (remote_debug) | |
838 | { | |
c12a5089 | 839 | const char *req_str = cs.report_thread_events ? "enabled" : "disabled"; |
65706a29 | 840 | |
4eefa7bc | 841 | debug_printf ("[thread events are now %s]\n", req_str); |
65706a29 PA |
842 | } |
843 | ||
844 | write_ok (own_buf); | |
845 | return; | |
846 | } | |
847 | ||
aefd8b33 SDJ |
848 | if (startswith (own_buf, "QStartupWithShell:")) |
849 | { | |
850 | const char *value = own_buf + strlen ("QStartupWithShell:"); | |
851 | ||
852 | if (strcmp (value, "1") == 0) | |
853 | startup_with_shell = true; | |
854 | else if (strcmp (value, "0") == 0) | |
855 | startup_with_shell = false; | |
856 | else | |
857 | { | |
858 | /* Unknown value. */ | |
859 | fprintf (stderr, "Unknown value to startup-with-shell: %s\n", | |
860 | own_buf); | |
861 | write_enn (own_buf); | |
862 | return; | |
863 | } | |
864 | ||
865 | if (remote_debug) | |
866 | debug_printf (_("[Inferior will %s started with shell]"), | |
867 | startup_with_shell ? "be" : "not be"); | |
868 | ||
869 | write_ok (own_buf); | |
870 | return; | |
871 | } | |
872 | ||
bc3b087d SDJ |
873 | if (startswith (own_buf, "QSetWorkingDir:")) |
874 | { | |
875 | const char *p = own_buf + strlen ("QSetWorkingDir:"); | |
876 | ||
877 | if (*p != '\0') | |
878 | { | |
879 | std::string path = hex2str (p); | |
880 | ||
881 | set_inferior_cwd (path.c_str ()); | |
882 | ||
883 | if (remote_debug) | |
884 | debug_printf (_("[Set the inferior's current directory to %s]\n"), | |
885 | path.c_str ()); | |
886 | } | |
887 | else | |
888 | { | |
889 | /* An empty argument means that we should clear out any | |
890 | previously set cwd for the inferior. */ | |
891 | set_inferior_cwd (NULL); | |
892 | ||
893 | if (remote_debug) | |
894 | debug_printf (_("\ | |
895 | [Unset the inferior's current directory; will use gdbserver's cwd]\n")); | |
896 | } | |
897 | write_ok (own_buf); | |
898 | ||
899 | return; | |
900 | } | |
901 | ||
89be2091 DJ |
902 | /* Otherwise we didn't know what packet it was. Say we didn't |
903 | understand it. */ | |
904 | own_buf[0] = 0; | |
905 | } | |
906 | ||
23181151 | 907 | static const char * |
fb1e4ffc | 908 | get_features_xml (const char *annex) |
23181151 | 909 | { |
3aee8918 PA |
910 | const struct target_desc *desc = current_target_desc (); |
911 | ||
912 | /* `desc->xmltarget' defines what to return when looking for the | |
913 | "target.xml" file. Its contents can either be verbatim XML code | |
914 | (prefixed with a '@') or else the name of the actual XML file to | |
915 | be used in place of "target.xml". | |
fb1e4ffc | 916 | |
9b4b61c8 UW |
917 | This variable is set up from the auto-generated |
918 | init_registers_... routine for the current target. */ | |
fb1e4ffc | 919 | |
0abe8a89 | 920 | if (strcmp (annex, "target.xml") == 0) |
23181151 | 921 | { |
e98577a9 | 922 | const char *ret = tdesc_get_features_xml (desc); |
0abe8a89 YQ |
923 | |
924 | if (*ret == '@') | |
925 | return ret + 1; | |
23181151 | 926 | else |
0abe8a89 | 927 | annex = ret; |
23181151 DJ |
928 | } |
929 | ||
9b4b61c8 UW |
930 | #ifdef USE_XML |
931 | { | |
932 | extern const char *const xml_builtin[][2]; | |
933 | int i; | |
934 | ||
935 | /* Look for the annex. */ | |
936 | for (i = 0; xml_builtin[i][0] != NULL; i++) | |
937 | if (strcmp (annex, xml_builtin[i][0]) == 0) | |
938 | break; | |
939 | ||
940 | if (xml_builtin[i][0] != NULL) | |
941 | return xml_builtin[i][1]; | |
942 | } | |
943 | #endif | |
944 | ||
945 | return NULL; | |
23181151 DJ |
946 | } |
947 | ||
5b3da067 | 948 | static void |
c74d0ad8 DJ |
949 | monitor_show_help (void) |
950 | { | |
951 | monitor_output ("The following monitor commands are supported:\n"); | |
952 | monitor_output (" set debug <0|1>\n"); | |
1b3f6016 | 953 | monitor_output (" Enable general debugging messages\n"); |
aa5ca48f DE |
954 | monitor_output (" set debug-hw-points <0|1>\n"); |
955 | monitor_output (" Enable h/w breakpoint/watchpoint debugging messages\n"); | |
c74d0ad8 DJ |
956 | monitor_output (" set remote-debug <0|1>\n"); |
957 | monitor_output (" Enable remote protocol debugging messages\n"); | |
87ce2a04 DE |
958 | monitor_output (" set debug-format option1[,option2,...]\n"); |
959 | monitor_output (" Add additional information to debugging messages\n"); | |
960 | monitor_output (" Options: all, none"); | |
87ce2a04 | 961 | monitor_output (", timestamp"); |
87ce2a04 | 962 | monitor_output ("\n"); |
ecd7ecbc DJ |
963 | monitor_output (" exit\n"); |
964 | monitor_output (" Quit GDBserver\n"); | |
c74d0ad8 DJ |
965 | } |
966 | ||
764880b7 PA |
967 | /* Read trace frame or inferior memory. Returns the number of bytes |
968 | actually read, zero when no further transfer is possible, and -1 on | |
969 | error. Return of a positive value smaller than LEN does not | |
970 | indicate there's no more to be read, only the end of the transfer. | |
971 | E.g., when GDB reads memory from a traceframe, a first request may | |
972 | be served from a memory block that does not cover the whole request | |
973 | length. A following request gets the rest served from either | |
974 | another block (of the same traceframe) or from the read-only | |
975 | regions. */ | |
219f2f23 PA |
976 | |
977 | static int | |
90d74c30 | 978 | gdb_read_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) |
219f2f23 | 979 | { |
c12a5089 | 980 | client_state &cs = get_client_state (); |
764880b7 | 981 | int res; |
90d74c30 | 982 | |
c12a5089 | 983 | if (cs.current_traceframe >= 0) |
219f2f23 PA |
984 | { |
985 | ULONGEST nbytes; | |
986 | ULONGEST length = len; | |
987 | ||
c12a5089 | 988 | if (traceframe_read_mem (cs.current_traceframe, |
219f2f23 | 989 | memaddr, myaddr, len, &nbytes)) |
9a13b2fa | 990 | return -1; |
219f2f23 | 991 | /* Data read from trace buffer, we're done. */ |
764880b7 PA |
992 | if (nbytes > 0) |
993 | return nbytes; | |
219f2f23 | 994 | if (!in_readonly_region (memaddr, length)) |
764880b7 | 995 | return -1; |
219f2f23 PA |
996 | /* Otherwise we have a valid readonly case, fall through. */ |
997 | /* (assume no half-trace half-real blocks for now) */ | |
998 | } | |
999 | ||
764880b7 PA |
1000 | res = prepare_to_access_memory (); |
1001 | if (res == 0) | |
90d74c30 | 1002 | { |
f557a88a | 1003 | if (set_desired_thread ()) |
f0db101d PA |
1004 | res = read_inferior_memory (memaddr, myaddr, len); |
1005 | else | |
1006 | res = 1; | |
0146f85b | 1007 | done_accessing_memory (); |
90d74c30 | 1008 | |
764880b7 PA |
1009 | return res == 0 ? len : -1; |
1010 | } | |
1011 | else | |
1012 | return -1; | |
219f2f23 PA |
1013 | } |
1014 | ||
1015 | /* Write trace frame or inferior memory. Actually, writing to trace | |
1016 | frames is forbidden. */ | |
1017 | ||
1018 | static int | |
90d74c30 | 1019 | gdb_write_memory (CORE_ADDR memaddr, const unsigned char *myaddr, int len) |
219f2f23 | 1020 | { |
c12a5089 SC |
1021 | client_state &cs = get_client_state (); |
1022 | if (cs.current_traceframe >= 0) | |
219f2f23 PA |
1023 | return EIO; |
1024 | else | |
90d74c30 PA |
1025 | { |
1026 | int ret; | |
1027 | ||
1028 | ret = prepare_to_access_memory (); | |
1029 | if (ret == 0) | |
1030 | { | |
f557a88a | 1031 | if (set_desired_thread ()) |
f0db101d PA |
1032 | ret = write_inferior_memory (memaddr, myaddr, len); |
1033 | else | |
1034 | ret = EIO; | |
0146f85b | 1035 | done_accessing_memory (); |
90d74c30 PA |
1036 | } |
1037 | return ret; | |
1038 | } | |
219f2f23 PA |
1039 | } |
1040 | ||
08388c79 DE |
1041 | /* Subroutine of handle_search_memory to simplify it. */ |
1042 | ||
1043 | static int | |
1044 | handle_search_memory_1 (CORE_ADDR start_addr, CORE_ADDR search_space_len, | |
1045 | gdb_byte *pattern, unsigned pattern_len, | |
1046 | gdb_byte *search_buf, | |
1047 | unsigned chunk_size, unsigned search_buf_size, | |
1048 | CORE_ADDR *found_addrp) | |
1049 | { | |
1050 | /* Prime the search buffer. */ | |
1051 | ||
764880b7 PA |
1052 | if (gdb_read_memory (start_addr, search_buf, search_buf_size) |
1053 | != search_buf_size) | |
08388c79 | 1054 | { |
b3dc46ff AB |
1055 | warning ("Unable to access %ld bytes of target " |
1056 | "memory at 0x%lx, halting search.", | |
1057 | (long) search_buf_size, (long) start_addr); | |
08388c79 DE |
1058 | return -1; |
1059 | } | |
1060 | ||
1061 | /* Perform the search. | |
1062 | ||
1063 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
1064 | When we've scanned N bytes we copy the trailing bytes to the start and | |
1065 | read in another N bytes. */ | |
1066 | ||
1067 | while (search_space_len >= pattern_len) | |
1068 | { | |
1069 | gdb_byte *found_ptr; | |
1070 | unsigned nr_search_bytes = (search_space_len < search_buf_size | |
1071 | ? search_space_len | |
1072 | : search_buf_size); | |
1073 | ||
d6f85c84 SM |
1074 | found_ptr = (gdb_byte *) memmem (search_buf, nr_search_bytes, pattern, |
1075 | pattern_len); | |
08388c79 DE |
1076 | |
1077 | if (found_ptr != NULL) | |
1078 | { | |
1079 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
1080 | *found_addrp = found_addr; | |
1081 | return 1; | |
1082 | } | |
1083 | ||
1084 | /* Not found in this chunk, skip to next chunk. */ | |
1085 | ||
1086 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
1087 | if (search_space_len >= chunk_size) | |
1088 | search_space_len -= chunk_size; | |
1089 | else | |
1090 | search_space_len = 0; | |
1091 | ||
1092 | if (search_space_len >= pattern_len) | |
1093 | { | |
1094 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 1095 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
1096 | int nr_to_read; |
1097 | ||
1098 | /* Copy the trailing part of the previous iteration to the front | |
1099 | of the buffer for the next iteration. */ | |
1100 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
1101 | ||
1102 | nr_to_read = (search_space_len - keep_len < chunk_size | |
1103 | ? search_space_len - keep_len | |
1104 | : chunk_size); | |
1105 | ||
90d74c30 | 1106 | if (gdb_read_memory (read_addr, search_buf + keep_len, |
764880b7 | 1107 | nr_to_read) != search_buf_size) |
08388c79 | 1108 | { |
b3dc46ff | 1109 | warning ("Unable to access %ld bytes of target memory " |
493e2a69 | 1110 | "at 0x%lx, halting search.", |
b3dc46ff | 1111 | (long) nr_to_read, (long) read_addr); |
08388c79 DE |
1112 | return -1; |
1113 | } | |
1114 | ||
1115 | start_addr += chunk_size; | |
1116 | } | |
1117 | } | |
1118 | ||
1119 | /* Not found. */ | |
1120 | ||
1121 | return 0; | |
1122 | } | |
1123 | ||
1124 | /* Handle qSearch:memory packets. */ | |
1125 | ||
1126 | static void | |
1127 | handle_search_memory (char *own_buf, int packet_len) | |
1128 | { | |
1129 | CORE_ADDR start_addr; | |
1130 | CORE_ADDR search_space_len; | |
1131 | gdb_byte *pattern; | |
1132 | unsigned int pattern_len; | |
1133 | /* NOTE: also defined in find.c testcase. */ | |
1134 | #define SEARCH_CHUNK_SIZE 16000 | |
1135 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
1136 | /* Buffer to hold memory contents for searching. */ | |
1137 | gdb_byte *search_buf; | |
1138 | unsigned search_buf_size; | |
1139 | int found; | |
1140 | CORE_ADDR found_addr; | |
1141 | int cmd_name_len = sizeof ("qSearch:memory:") - 1; | |
1142 | ||
224c3ddb | 1143 | pattern = (gdb_byte *) malloc (packet_len); |
08388c79 DE |
1144 | if (pattern == NULL) |
1145 | { | |
5e1471f5 | 1146 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
1147 | strcpy (own_buf, "E00"); |
1148 | return; | |
1149 | } | |
1150 | if (decode_search_memory_packet (own_buf + cmd_name_len, | |
1151 | packet_len - cmd_name_len, | |
1152 | &start_addr, &search_space_len, | |
1153 | pattern, &pattern_len) < 0) | |
1154 | { | |
1155 | free (pattern); | |
5e1471f5 | 1156 | error ("Error in parsing qSearch:memory packet"); |
08388c79 DE |
1157 | strcpy (own_buf, "E00"); |
1158 | return; | |
1159 | } | |
1160 | ||
1161 | search_buf_size = chunk_size + pattern_len - 1; | |
1162 | ||
1163 | /* No point in trying to allocate a buffer larger than the search space. */ | |
1164 | if (search_space_len < search_buf_size) | |
1165 | search_buf_size = search_space_len; | |
1166 | ||
224c3ddb | 1167 | search_buf = (gdb_byte *) malloc (search_buf_size); |
08388c79 DE |
1168 | if (search_buf == NULL) |
1169 | { | |
1170 | free (pattern); | |
5e1471f5 | 1171 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
1172 | strcpy (own_buf, "E00"); |
1173 | return; | |
1174 | } | |
1175 | ||
1176 | found = handle_search_memory_1 (start_addr, search_space_len, | |
1177 | pattern, pattern_len, | |
1178 | search_buf, chunk_size, search_buf_size, | |
1179 | &found_addr); | |
1180 | ||
1181 | if (found > 0) | |
1182 | sprintf (own_buf, "1,%lx", (long) found_addr); | |
1183 | else if (found == 0) | |
1184 | strcpy (own_buf, "0"); | |
1185 | else | |
1186 | strcpy (own_buf, "E00"); | |
1187 | ||
1188 | free (search_buf); | |
1189 | free (pattern); | |
1190 | } | |
1191 | ||
e8ca139e SM |
1192 | /* Handle the "D" packet. */ |
1193 | ||
1194 | static void | |
1195 | handle_detach (char *own_buf) | |
1196 | { | |
c12a5089 | 1197 | client_state &cs = get_client_state (); |
e8ca139e | 1198 | |
31445d10 | 1199 | process_info *process; |
e8ca139e | 1200 | |
c12a5089 | 1201 | if (cs.multi_process) |
e8ca139e SM |
1202 | { |
1203 | /* skip 'D;' */ | |
31445d10 PA |
1204 | int pid = strtol (&own_buf[2], NULL, 16); |
1205 | ||
1206 | process = find_process_pid (pid); | |
e8ca139e SM |
1207 | } |
1208 | else | |
e8ca139e | 1209 | { |
31445d10 PA |
1210 | process = (current_thread != nullptr |
1211 | ? get_thread_process (current_thread) | |
1212 | : nullptr); | |
1213 | } | |
e8ca139e | 1214 | |
31445d10 PA |
1215 | if (process == NULL) |
1216 | { | |
1217 | write_enn (own_buf); | |
1218 | return; | |
1219 | } | |
e8ca139e | 1220 | |
31445d10 PA |
1221 | if ((tracing && disconnected_tracing) || any_persistent_commands (process)) |
1222 | { | |
e8ca139e SM |
1223 | if (tracing && disconnected_tracing) |
1224 | fprintf (stderr, | |
1225 | "Disconnected tracing in effect, " | |
1226 | "leaving gdbserver attached to the process\n"); | |
1227 | ||
31445d10 | 1228 | if (any_persistent_commands (process)) |
e8ca139e SM |
1229 | fprintf (stderr, |
1230 | "Persistent commands are present, " | |
1231 | "leaving gdbserver attached to the process\n"); | |
1232 | ||
1233 | /* Make sure we're in non-stop/async mode, so we we can both | |
1234 | wait for an async socket accept, and handle async target | |
1235 | events simultaneously. There's also no point either in | |
1236 | having the target stop all threads, when we're going to | |
1237 | pass signals down without informing GDB. */ | |
1238 | if (!non_stop) | |
1239 | { | |
1240 | if (debug_threads) | |
1241 | debug_printf ("Forcing non-stop mode\n"); | |
1242 | ||
1243 | non_stop = 1; | |
1244 | start_non_stop (1); | |
1245 | } | |
1246 | ||
1247 | process->gdb_detached = 1; | |
1248 | ||
1249 | /* Detaching implicitly resumes all threads. */ | |
1250 | target_continue_no_signal (minus_one_ptid); | |
1251 | ||
1252 | write_ok (own_buf); | |
1253 | return; | |
1254 | } | |
1255 | ||
31445d10 | 1256 | fprintf (stderr, "Detaching from process %d\n", process->pid); |
e8ca139e | 1257 | stop_tracing (); |
ef2ddb33 | 1258 | if (detach_inferior (process) != 0) |
e8ca139e SM |
1259 | write_enn (own_buf); |
1260 | else | |
1261 | { | |
31445d10 | 1262 | discard_queued_stop_replies (ptid_t (process->pid)); |
e8ca139e SM |
1263 | write_ok (own_buf); |
1264 | ||
1265 | if (extended_protocol || target_running ()) | |
1266 | { | |
1267 | /* There is still at least one inferior remaining or | |
1268 | we are in extended mode, so don't terminate gdbserver, | |
1269 | and instead treat this like a normal program exit. */ | |
c12a5089 SC |
1270 | cs.last_status.kind = TARGET_WAITKIND_EXITED; |
1271 | cs.last_status.value.integer = 0; | |
31445d10 | 1272 | cs.last_ptid = ptid_t (process->pid); |
e8ca139e SM |
1273 | |
1274 | current_thread = NULL; | |
1275 | } | |
1276 | else | |
1277 | { | |
1278 | putpkt (own_buf); | |
1279 | remote_close (); | |
1280 | ||
1281 | /* If we are attached, then we can exit. Otherwise, we | |
1282 | need to hang around doing nothing, until the child is | |
1283 | gone. */ | |
ef2ddb33 | 1284 | join_inferior (process); |
e8ca139e SM |
1285 | exit (0); |
1286 | } | |
1287 | } | |
1288 | } | |
1289 | ||
87ce2a04 DE |
1290 | /* Parse options to --debug-format= and "monitor set debug-format". |
1291 | ARG is the text after "--debug-format=" or "monitor set debug-format". | |
1292 | IS_MONITOR is non-zero if we're invoked via "monitor set debug-format". | |
1293 | This triggers calls to monitor_output. | |
e80aaf61 SM |
1294 | The result is an empty string if all options were parsed ok, otherwise an |
1295 | error message which the caller must free. | |
87ce2a04 DE |
1296 | |
1297 | N.B. These commands affect all debug format settings, they are not | |
1298 | cumulative. If a format is not specified, it is turned off. | |
1299 | However, we don't go to extra trouble with things like | |
1300 | "monitor set debug-format all,none,timestamp". | |
1301 | Instead we just parse them one at a time, in order. | |
1302 | ||
1303 | The syntax for "monitor set debug" we support here is not identical | |
1304 | to gdb's "set debug foo on|off" because we also use this function to | |
1305 | parse "--debug-format=foo,bar". */ | |
1306 | ||
2cc05030 | 1307 | static std::string |
87ce2a04 DE |
1308 | parse_debug_format_options (const char *arg, int is_monitor) |
1309 | { | |
87ce2a04 DE |
1310 | /* First turn all debug format options off. */ |
1311 | debug_timestamp = 0; | |
1312 | ||
1313 | /* First remove leading spaces, for "monitor set debug-format". */ | |
1314 | while (isspace (*arg)) | |
1315 | ++arg; | |
1316 | ||
e80aaf61 SM |
1317 | std::vector<gdb::unique_xmalloc_ptr<char>> options |
1318 | = delim_string_to_char_ptr_vec (arg, ','); | |
87ce2a04 | 1319 | |
e80aaf61 | 1320 | for (const gdb::unique_xmalloc_ptr<char> &option : options) |
87ce2a04 | 1321 | { |
e80aaf61 | 1322 | if (strcmp (option.get (), "all") == 0) |
87ce2a04 DE |
1323 | { |
1324 | debug_timestamp = 1; | |
1325 | if (is_monitor) | |
1326 | monitor_output ("All extra debug format options enabled.\n"); | |
1327 | } | |
e80aaf61 | 1328 | else if (strcmp (option.get (), "none") == 0) |
87ce2a04 DE |
1329 | { |
1330 | debug_timestamp = 0; | |
1331 | if (is_monitor) | |
1332 | monitor_output ("All extra debug format options disabled.\n"); | |
1333 | } | |
e80aaf61 | 1334 | else if (strcmp (option.get (), "timestamp") == 0) |
87ce2a04 DE |
1335 | { |
1336 | debug_timestamp = 1; | |
1337 | if (is_monitor) | |
1338 | monitor_output ("Timestamps will be added to debug output.\n"); | |
1339 | } | |
87ce2a04 DE |
1340 | else if (*option == '\0') |
1341 | { | |
1342 | /* An empty option, e.g., "--debug-format=foo,,bar", is ignored. */ | |
1343 | continue; | |
1344 | } | |
1345 | else | |
e80aaf61 SM |
1346 | return string_printf ("Unknown debug-format argument: \"%s\"\n", |
1347 | option.get ()); | |
87ce2a04 DE |
1348 | } |
1349 | ||
2cc05030 | 1350 | return std::string (); |
87ce2a04 DE |
1351 | } |
1352 | ||
cdbfd419 PP |
1353 | /* Handle monitor commands not handled by target-specific handlers. */ |
1354 | ||
1355 | static void | |
d73f2619 | 1356 | handle_monitor_command (char *mon, char *own_buf) |
cdbfd419 PP |
1357 | { |
1358 | if (strcmp (mon, "set debug 1") == 0) | |
1359 | { | |
1360 | debug_threads = 1; | |
1361 | monitor_output ("Debug output enabled.\n"); | |
1362 | } | |
1363 | else if (strcmp (mon, "set debug 0") == 0) | |
1364 | { | |
1365 | debug_threads = 0; | |
1366 | monitor_output ("Debug output disabled.\n"); | |
1367 | } | |
1368 | else if (strcmp (mon, "set debug-hw-points 1") == 0) | |
1369 | { | |
c5e92cca | 1370 | show_debug_regs = 1; |
cdbfd419 PP |
1371 | monitor_output ("H/W point debugging output enabled.\n"); |
1372 | } | |
1373 | else if (strcmp (mon, "set debug-hw-points 0") == 0) | |
1374 | { | |
c5e92cca | 1375 | show_debug_regs = 0; |
cdbfd419 PP |
1376 | monitor_output ("H/W point debugging output disabled.\n"); |
1377 | } | |
1378 | else if (strcmp (mon, "set remote-debug 1") == 0) | |
1379 | { | |
1380 | remote_debug = 1; | |
1381 | monitor_output ("Protocol debug output enabled.\n"); | |
1382 | } | |
1383 | else if (strcmp (mon, "set remote-debug 0") == 0) | |
1384 | { | |
1385 | remote_debug = 0; | |
1386 | monitor_output ("Protocol debug output disabled.\n"); | |
1387 | } | |
61012eef | 1388 | else if (startswith (mon, "set debug-format ")) |
87ce2a04 | 1389 | { |
2cc05030 | 1390 | std::string error_msg |
87ce2a04 DE |
1391 | = parse_debug_format_options (mon + sizeof ("set debug-format ") - 1, |
1392 | 1); | |
1393 | ||
2cc05030 | 1394 | if (!error_msg.empty ()) |
87ce2a04 | 1395 | { |
2cc05030 | 1396 | monitor_output (error_msg.c_str ()); |
87ce2a04 DE |
1397 | monitor_show_help (); |
1398 | write_enn (own_buf); | |
87ce2a04 DE |
1399 | } |
1400 | } | |
cdbfd419 PP |
1401 | else if (strcmp (mon, "help") == 0) |
1402 | monitor_show_help (); | |
1403 | else if (strcmp (mon, "exit") == 0) | |
1404 | exit_requested = 1; | |
1405 | else | |
1406 | { | |
1407 | monitor_output ("Unknown monitor command.\n\n"); | |
1408 | monitor_show_help (); | |
1409 | write_enn (own_buf); | |
1410 | } | |
1411 | } | |
1412 | ||
d08aafef PA |
1413 | /* Associates a callback with each supported qXfer'able object. */ |
1414 | ||
1415 | struct qxfer | |
1416 | { | |
1417 | /* The object this handler handles. */ | |
1418 | const char *object; | |
1419 | ||
1420 | /* Request that the target transfer up to LEN 8-bit bytes of the | |
1421 | target's OBJECT. The OFFSET, for a seekable object, specifies | |
1422 | the starting point. The ANNEX can be used to provide additional | |
1423 | data-specific information to the target. | |
1424 | ||
1425 | Return the number of bytes actually transfered, zero when no | |
5cc22e4c MM |
1426 | further transfer is possible, -1 on error, -2 when the transfer |
1427 | is not supported, and -3 on a verbose error message that should | |
1428 | be preserved. Return of a positive value smaller than LEN does | |
1429 | not indicate the end of the object, only the end of the transfer. | |
d08aafef PA |
1430 | |
1431 | One, and only one, of readbuf or writebuf must be non-NULL. */ | |
1432 | int (*xfer) (const char *annex, | |
1433 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1434 | ULONGEST offset, LONGEST len); | |
1435 | }; | |
1436 | ||
1437 | /* Handle qXfer:auxv:read. */ | |
1438 | ||
1439 | static int | |
1440 | handle_qxfer_auxv (const char *annex, | |
1441 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1442 | ULONGEST offset, LONGEST len) | |
1443 | { | |
1444 | if (the_target->read_auxv == NULL || writebuf != NULL) | |
1445 | return -2; | |
1446 | ||
f0db101d | 1447 | if (annex[0] != '\0' || current_thread == NULL) |
d08aafef PA |
1448 | return -1; |
1449 | ||
1450 | return (*the_target->read_auxv) (offset, readbuf, len); | |
1451 | } | |
1452 | ||
e57f1de3 GB |
1453 | /* Handle qXfer:exec-file:read. */ |
1454 | ||
1455 | static int | |
256642e8 | 1456 | handle_qxfer_exec_file (const char *annex, |
e57f1de3 GB |
1457 | gdb_byte *readbuf, const gdb_byte *writebuf, |
1458 | ULONGEST offset, LONGEST len) | |
1459 | { | |
835205d0 | 1460 | char *file; |
e57f1de3 GB |
1461 | ULONGEST pid; |
1462 | int total_len; | |
1463 | ||
1464 | if (the_target->pid_to_exec_file == NULL || writebuf != NULL) | |
1465 | return -2; | |
1466 | ||
256642e8 | 1467 | if (annex[0] == '\0') |
835205d0 GB |
1468 | { |
1469 | if (current_thread == NULL) | |
1470 | return -1; | |
1471 | ||
1472 | pid = pid_of (current_thread); | |
1473 | } | |
1474 | else | |
1475 | { | |
835205d0 | 1476 | annex = unpack_varlen_hex (annex, &pid); |
835205d0 GB |
1477 | if (annex[0] != '\0') |
1478 | return -1; | |
1479 | } | |
1480 | ||
1481 | if (pid <= 0) | |
e57f1de3 GB |
1482 | return -1; |
1483 | ||
1484 | file = (*the_target->pid_to_exec_file) (pid); | |
1485 | if (file == NULL) | |
1486 | return -1; | |
1487 | ||
1488 | total_len = strlen (file); | |
1489 | ||
1490 | if (offset > total_len) | |
1491 | return -1; | |
1492 | ||
1493 | if (offset + len > total_len) | |
1494 | len = total_len - offset; | |
1495 | ||
1496 | memcpy (readbuf, file + offset, len); | |
1497 | return len; | |
1498 | } | |
1499 | ||
d08aafef PA |
1500 | /* Handle qXfer:features:read. */ |
1501 | ||
1502 | static int | |
1503 | handle_qxfer_features (const char *annex, | |
1504 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1505 | ULONGEST offset, LONGEST len) | |
1506 | { | |
1507 | const char *document; | |
1508 | size_t total_len; | |
1509 | ||
1510 | if (writebuf != NULL) | |
1511 | return -2; | |
1512 | ||
1513 | if (!target_running ()) | |
1514 | return -1; | |
1515 | ||
1516 | /* Grab the correct annex. */ | |
1517 | document = get_features_xml (annex); | |
1518 | if (document == NULL) | |
1519 | return -1; | |
1520 | ||
1521 | total_len = strlen (document); | |
1522 | ||
1523 | if (offset > total_len) | |
1524 | return -1; | |
1525 | ||
1526 | if (offset + len > total_len) | |
1527 | len = total_len - offset; | |
1528 | ||
1529 | memcpy (readbuf, document + offset, len); | |
1530 | return len; | |
1531 | } | |
1532 | ||
1533 | /* Handle qXfer:libraries:read. */ | |
1534 | ||
1535 | static int | |
1536 | handle_qxfer_libraries (const char *annex, | |
1537 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1538 | ULONGEST offset, LONGEST len) | |
1539 | { | |
d08aafef PA |
1540 | if (writebuf != NULL) |
1541 | return -2; | |
1542 | ||
f0db101d | 1543 | if (annex[0] != '\0' || current_thread == NULL) |
d08aafef PA |
1544 | return -1; |
1545 | ||
04fd3ba9 | 1546 | std::string document = "<library-list version=\"1.0\">\n"; |
d08aafef | 1547 | |
c9cb8905 SM |
1548 | for (const dll_info &dll : all_dlls) |
1549 | document += string_printf | |
1550 | (" <library name=\"%s\"><segment address=\"0x%lx\"/></library>\n", | |
1551 | dll.name.c_str (), (long) dll.base_addr); | |
d08aafef | 1552 | |
04fd3ba9 | 1553 | document += "</library-list>\n"; |
d08aafef | 1554 | |
04fd3ba9 SM |
1555 | if (offset > document.length ()) |
1556 | return -1; | |
d08aafef | 1557 | |
04fd3ba9 SM |
1558 | if (offset + len > document.length ()) |
1559 | len = document.length () - offset; | |
d08aafef | 1560 | |
04fd3ba9 | 1561 | memcpy (readbuf, &document[offset], len); |
d08aafef | 1562 | |
d08aafef PA |
1563 | return len; |
1564 | } | |
1565 | ||
2268b414 JK |
1566 | /* Handle qXfer:libraries-svr4:read. */ |
1567 | ||
1568 | static int | |
1569 | handle_qxfer_libraries_svr4 (const char *annex, | |
1570 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1571 | ULONGEST offset, LONGEST len) | |
1572 | { | |
1573 | if (writebuf != NULL) | |
1574 | return -2; | |
1575 | ||
f0db101d | 1576 | if (current_thread == NULL || the_target->qxfer_libraries_svr4 == NULL) |
2268b414 JK |
1577 | return -1; |
1578 | ||
1579 | return the_target->qxfer_libraries_svr4 (annex, readbuf, writebuf, offset, len); | |
1580 | } | |
1581 | ||
d08aafef PA |
1582 | /* Handle qXfer:osadata:read. */ |
1583 | ||
1584 | static int | |
1585 | handle_qxfer_osdata (const char *annex, | |
1586 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1587 | ULONGEST offset, LONGEST len) | |
1588 | { | |
1589 | if (the_target->qxfer_osdata == NULL || writebuf != NULL) | |
1590 | return -2; | |
1591 | ||
1592 | return (*the_target->qxfer_osdata) (annex, readbuf, NULL, offset, len); | |
1593 | } | |
1594 | ||
1595 | /* Handle qXfer:siginfo:read and qXfer:siginfo:write. */ | |
1596 | ||
1597 | static int | |
1598 | handle_qxfer_siginfo (const char *annex, | |
1599 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1600 | ULONGEST offset, LONGEST len) | |
1601 | { | |
1602 | if (the_target->qxfer_siginfo == NULL) | |
1603 | return -2; | |
1604 | ||
f0db101d | 1605 | if (annex[0] != '\0' || current_thread == NULL) |
d08aafef PA |
1606 | return -1; |
1607 | ||
1608 | return (*the_target->qxfer_siginfo) (annex, readbuf, writebuf, offset, len); | |
1609 | } | |
1610 | ||
1611 | /* Handle qXfer:spu:read and qXfer:spu:write. */ | |
1612 | ||
1613 | static int | |
1614 | handle_qxfer_spu (const char *annex, | |
1615 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1616 | ULONGEST offset, LONGEST len) | |
1617 | { | |
1618 | if (the_target->qxfer_spu == NULL) | |
1619 | return -2; | |
1620 | ||
f0db101d | 1621 | if (current_thread == NULL) |
d08aafef PA |
1622 | return -1; |
1623 | ||
1624 | return (*the_target->qxfer_spu) (annex, readbuf, writebuf, offset, len); | |
1625 | } | |
1626 | ||
1627 | /* Handle qXfer:statictrace:read. */ | |
1628 | ||
1629 | static int | |
1630 | handle_qxfer_statictrace (const char *annex, | |
1631 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1632 | ULONGEST offset, LONGEST len) | |
1633 | { | |
c12a5089 | 1634 | client_state &cs = get_client_state (); |
d08aafef PA |
1635 | ULONGEST nbytes; |
1636 | ||
1637 | if (writebuf != NULL) | |
1638 | return -2; | |
1639 | ||
c12a5089 SC |
1640 | if (annex[0] != '\0' || current_thread == NULL |
1641 | || cs.current_traceframe == -1) | |
d08aafef PA |
1642 | return -1; |
1643 | ||
c12a5089 | 1644 | if (traceframe_read_sdata (cs.current_traceframe, offset, |
d08aafef PA |
1645 | readbuf, len, &nbytes)) |
1646 | return -1; | |
1647 | return nbytes; | |
1648 | } | |
1649 | ||
649ebbca DE |
1650 | /* Helper for handle_qxfer_threads_proper. |
1651 | Emit the XML to describe the thread of INF. */ | |
d08aafef | 1652 | |
dc146f7c | 1653 | static void |
c0e15c9b | 1654 | handle_qxfer_threads_worker (thread_info *thread, struct buffer *buffer) |
dc146f7c | 1655 | { |
124aceb4 | 1656 | ptid_t ptid = ptid_of (thread); |
649ebbca DE |
1657 | char ptid_s[100]; |
1658 | int core = target_core_of_thread (ptid); | |
1659 | char core_s[21]; | |
79efa585 | 1660 | const char *name = target_thread_name (ptid); |
f6327dcb KB |
1661 | int handle_len; |
1662 | gdb_byte *handle; | |
1663 | bool handle_status = target_thread_handle (ptid, &handle, &handle_len); | |
dc146f7c | 1664 | |
649ebbca | 1665 | write_ptid (ptid_s, ptid); |
dc146f7c | 1666 | |
79efa585 SM |
1667 | buffer_xml_printf (buffer, "<thread id=\"%s\"", ptid_s); |
1668 | ||
649ebbca | 1669 | if (core != -1) |
dc146f7c | 1670 | { |
649ebbca | 1671 | sprintf (core_s, "%d", core); |
79efa585 | 1672 | buffer_xml_printf (buffer, " core=\"%s\"", core_s); |
649ebbca | 1673 | } |
79efa585 SM |
1674 | |
1675 | if (name != NULL) | |
1676 | buffer_xml_printf (buffer, " name=\"%s\"", name); | |
1677 | ||
f6327dcb KB |
1678 | if (handle_status) |
1679 | { | |
1680 | char *handle_s = (char *) alloca (handle_len * 2 + 1); | |
1681 | bin2hex (handle, handle_s, handle_len); | |
1682 | buffer_xml_printf (buffer, " handle=\"%s\"", handle_s); | |
1683 | } | |
1684 | ||
79efa585 | 1685 | buffer_xml_printf (buffer, "/>\n"); |
649ebbca | 1686 | } |
dc146f7c | 1687 | |
649ebbca | 1688 | /* Helper for handle_qxfer_threads. */ |
dc146f7c | 1689 | |
649ebbca DE |
1690 | static void |
1691 | handle_qxfer_threads_proper (struct buffer *buffer) | |
1692 | { | |
1693 | buffer_grow_str (buffer, "<threads>\n"); | |
1694 | ||
c0e15c9b SM |
1695 | for_each_thread ([&] (thread_info *thread) |
1696 | { | |
1697 | handle_qxfer_threads_worker (thread, buffer); | |
1698 | }); | |
dc146f7c VP |
1699 | |
1700 | buffer_grow_str0 (buffer, "</threads>\n"); | |
1701 | } | |
1702 | ||
d08aafef PA |
1703 | /* Handle qXfer:threads:read. */ |
1704 | ||
dc146f7c | 1705 | static int |
d08aafef PA |
1706 | handle_qxfer_threads (const char *annex, |
1707 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1708 | ULONGEST offset, LONGEST len) | |
dc146f7c VP |
1709 | { |
1710 | static char *result = 0; | |
1711 | static unsigned int result_length = 0; | |
1712 | ||
d08aafef PA |
1713 | if (writebuf != NULL) |
1714 | return -2; | |
1715 | ||
f0db101d | 1716 | if (annex[0] != '\0') |
d08aafef | 1717 | return -1; |
dc146f7c VP |
1718 | |
1719 | if (offset == 0) | |
1720 | { | |
1721 | struct buffer buffer; | |
1722 | /* When asked for data at offset 0, generate everything and store into | |
1723 | 'result'. Successive reads will be served off 'result'. */ | |
1724 | if (result) | |
1725 | free (result); | |
1726 | ||
1727 | buffer_init (&buffer); | |
1728 | ||
d08aafef | 1729 | handle_qxfer_threads_proper (&buffer); |
dc146f7c VP |
1730 | |
1731 | result = buffer_finish (&buffer); | |
1732 | result_length = strlen (result); | |
1733 | buffer_free (&buffer); | |
1734 | } | |
1735 | ||
1736 | if (offset >= result_length) | |
1737 | { | |
1738 | /* We're out of data. */ | |
1739 | free (result); | |
1740 | result = NULL; | |
1741 | result_length = 0; | |
1742 | return 0; | |
1743 | } | |
1744 | ||
d08aafef PA |
1745 | if (len > result_length - offset) |
1746 | len = result_length - offset; | |
1747 | ||
1748 | memcpy (readbuf, result + offset, len); | |
1749 | ||
1750 | return len; | |
1751 | } | |
1752 | ||
b3b9301e PA |
1753 | /* Handle qXfer:traceframe-info:read. */ |
1754 | ||
1755 | static int | |
1756 | handle_qxfer_traceframe_info (const char *annex, | |
1757 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1758 | ULONGEST offset, LONGEST len) | |
1759 | { | |
c12a5089 | 1760 | client_state &cs = get_client_state (); |
b3b9301e PA |
1761 | static char *result = 0; |
1762 | static unsigned int result_length = 0; | |
1763 | ||
1764 | if (writebuf != NULL) | |
1765 | return -2; | |
1766 | ||
c12a5089 | 1767 | if (!target_running () || annex[0] != '\0' || cs.current_traceframe == -1) |
b3b9301e PA |
1768 | return -1; |
1769 | ||
1770 | if (offset == 0) | |
1771 | { | |
1772 | struct buffer buffer; | |
1773 | ||
1774 | /* When asked for data at offset 0, generate everything and | |
1775 | store into 'result'. Successive reads will be served off | |
1776 | 'result'. */ | |
1777 | free (result); | |
1778 | ||
1779 | buffer_init (&buffer); | |
1780 | ||
c12a5089 | 1781 | traceframe_read_info (cs.current_traceframe, &buffer); |
b3b9301e PA |
1782 | |
1783 | result = buffer_finish (&buffer); | |
1784 | result_length = strlen (result); | |
1785 | buffer_free (&buffer); | |
1786 | } | |
1787 | ||
1788 | if (offset >= result_length) | |
1789 | { | |
1790 | /* We're out of data. */ | |
1791 | free (result); | |
1792 | result = NULL; | |
1793 | result_length = 0; | |
1794 | return 0; | |
1795 | } | |
1796 | ||
1797 | if (len > result_length - offset) | |
1798 | len = result_length - offset; | |
1799 | ||
1800 | memcpy (readbuf, result + offset, len); | |
1801 | return len; | |
1802 | } | |
1803 | ||
78d85199 YQ |
1804 | /* Handle qXfer:fdpic:read. */ |
1805 | ||
1806 | static int | |
1807 | handle_qxfer_fdpic (const char *annex, gdb_byte *readbuf, | |
1808 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1809 | { | |
1810 | if (the_target->read_loadmap == NULL) | |
1811 | return -2; | |
1812 | ||
f0db101d | 1813 | if (current_thread == NULL) |
78d85199 YQ |
1814 | return -1; |
1815 | ||
1816 | return (*the_target->read_loadmap) (annex, offset, readbuf, len); | |
1817 | } | |
1818 | ||
9accd112 MM |
1819 | /* Handle qXfer:btrace:read. */ |
1820 | ||
1821 | static int | |
1822 | handle_qxfer_btrace (const char *annex, | |
1823 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1824 | ULONGEST offset, LONGEST len) | |
1825 | { | |
c12a5089 | 1826 | client_state &cs = get_client_state (); |
9accd112 MM |
1827 | static struct buffer cache; |
1828 | struct thread_info *thread; | |
add67df8 PA |
1829 | enum btrace_read_type type; |
1830 | int result; | |
9accd112 | 1831 | |
b1223e78 | 1832 | if (writebuf != NULL) |
9accd112 MM |
1833 | return -2; |
1834 | ||
d7e15655 TT |
1835 | if (cs.general_thread == null_ptid |
1836 | || cs.general_thread == minus_one_ptid) | |
9accd112 | 1837 | { |
c12a5089 | 1838 | strcpy (cs.own_buf, "E.Must select a single thread."); |
9accd112 MM |
1839 | return -3; |
1840 | } | |
1841 | ||
c12a5089 | 1842 | thread = find_thread_ptid (cs.general_thread); |
9accd112 MM |
1843 | if (thread == NULL) |
1844 | { | |
c12a5089 | 1845 | strcpy (cs.own_buf, "E.No such thread."); |
9accd112 MM |
1846 | return -3; |
1847 | } | |
1848 | ||
1849 | if (thread->btrace == NULL) | |
1850 | { | |
c12a5089 | 1851 | strcpy (cs.own_buf, "E.Btrace not enabled."); |
9accd112 MM |
1852 | return -3; |
1853 | } | |
1854 | ||
1855 | if (strcmp (annex, "all") == 0) | |
864089d2 | 1856 | type = BTRACE_READ_ALL; |
9accd112 | 1857 | else if (strcmp (annex, "new") == 0) |
864089d2 | 1858 | type = BTRACE_READ_NEW; |
969c39fb MM |
1859 | else if (strcmp (annex, "delta") == 0) |
1860 | type = BTRACE_READ_DELTA; | |
9accd112 MM |
1861 | else |
1862 | { | |
c12a5089 | 1863 | strcpy (cs.own_buf, "E.Bad annex."); |
9accd112 MM |
1864 | return -3; |
1865 | } | |
1866 | ||
1867 | if (offset == 0) | |
1868 | { | |
1869 | buffer_free (&cache); | |
1870 | ||
b1223e78 MM |
1871 | TRY |
1872 | { | |
1873 | result = target_read_btrace (thread->btrace, &cache, type); | |
1874 | if (result != 0) | |
c12a5089 | 1875 | memcpy (cs.own_buf, cache.buffer, cache.used_size); |
b1223e78 MM |
1876 | } |
1877 | CATCH (exception, RETURN_MASK_ERROR) | |
969c39fb | 1878 | { |
c12a5089 | 1879 | sprintf (cs.own_buf, "E.%s", exception.message); |
b1223e78 | 1880 | result = -1; |
969c39fb | 1881 | } |
b1223e78 MM |
1882 | END_CATCH |
1883 | ||
1884 | if (result != 0) | |
1885 | return -3; | |
9accd112 MM |
1886 | } |
1887 | else if (offset > cache.used_size) | |
1888 | { | |
1889 | buffer_free (&cache); | |
1890 | return -3; | |
1891 | } | |
1892 | ||
1893 | if (len > cache.used_size - offset) | |
1894 | len = cache.used_size - offset; | |
1895 | ||
1896 | memcpy (readbuf, cache.buffer + offset, len); | |
1897 | ||
1898 | return len; | |
1899 | } | |
1900 | ||
f4abbc16 MM |
1901 | /* Handle qXfer:btrace-conf:read. */ |
1902 | ||
1903 | static int | |
1904 | handle_qxfer_btrace_conf (const char *annex, | |
1905 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1906 | ULONGEST offset, LONGEST len) | |
1907 | { | |
c12a5089 | 1908 | client_state &cs = get_client_state (); |
f4abbc16 MM |
1909 | static struct buffer cache; |
1910 | struct thread_info *thread; | |
1911 | int result; | |
1912 | ||
b1223e78 | 1913 | if (writebuf != NULL) |
f4abbc16 MM |
1914 | return -2; |
1915 | ||
f0db101d | 1916 | if (annex[0] != '\0') |
f4abbc16 MM |
1917 | return -1; |
1918 | ||
d7e15655 TT |
1919 | if (cs.general_thread == null_ptid |
1920 | || cs.general_thread == minus_one_ptid) | |
f4abbc16 | 1921 | { |
c12a5089 | 1922 | strcpy (cs.own_buf, "E.Must select a single thread."); |
f4abbc16 MM |
1923 | return -3; |
1924 | } | |
1925 | ||
c12a5089 | 1926 | thread = find_thread_ptid (cs.general_thread); |
f4abbc16 MM |
1927 | if (thread == NULL) |
1928 | { | |
c12a5089 | 1929 | strcpy (cs.own_buf, "E.No such thread."); |
f4abbc16 MM |
1930 | return -3; |
1931 | } | |
1932 | ||
1933 | if (thread->btrace == NULL) | |
1934 | { | |
c12a5089 | 1935 | strcpy (cs.own_buf, "E.Btrace not enabled."); |
f4abbc16 MM |
1936 | return -3; |
1937 | } | |
1938 | ||
1939 | if (offset == 0) | |
1940 | { | |
1941 | buffer_free (&cache); | |
1942 | ||
b1223e78 MM |
1943 | TRY |
1944 | { | |
1945 | result = target_read_btrace_conf (thread->btrace, &cache); | |
1946 | if (result != 0) | |
c12a5089 | 1947 | memcpy (cs.own_buf, cache.buffer, cache.used_size); |
b1223e78 MM |
1948 | } |
1949 | CATCH (exception, RETURN_MASK_ERROR) | |
f4abbc16 | 1950 | { |
c12a5089 | 1951 | sprintf (cs.own_buf, "E.%s", exception.message); |
b1223e78 | 1952 | result = -1; |
f4abbc16 | 1953 | } |
b1223e78 MM |
1954 | END_CATCH |
1955 | ||
1956 | if (result != 0) | |
1957 | return -3; | |
f4abbc16 MM |
1958 | } |
1959 | else if (offset > cache.used_size) | |
1960 | { | |
1961 | buffer_free (&cache); | |
1962 | return -3; | |
1963 | } | |
1964 | ||
1965 | if (len > cache.used_size - offset) | |
1966 | len = cache.used_size - offset; | |
1967 | ||
1968 | memcpy (readbuf, cache.buffer + offset, len); | |
1969 | ||
1970 | return len; | |
1971 | } | |
1972 | ||
d08aafef PA |
1973 | static const struct qxfer qxfer_packets[] = |
1974 | { | |
1975 | { "auxv", handle_qxfer_auxv }, | |
9accd112 | 1976 | { "btrace", handle_qxfer_btrace }, |
f4abbc16 | 1977 | { "btrace-conf", handle_qxfer_btrace_conf }, |
e57f1de3 | 1978 | { "exec-file", handle_qxfer_exec_file}, |
78d85199 | 1979 | { "fdpic", handle_qxfer_fdpic}, |
d08aafef PA |
1980 | { "features", handle_qxfer_features }, |
1981 | { "libraries", handle_qxfer_libraries }, | |
2268b414 | 1982 | { "libraries-svr4", handle_qxfer_libraries_svr4 }, |
d08aafef PA |
1983 | { "osdata", handle_qxfer_osdata }, |
1984 | { "siginfo", handle_qxfer_siginfo }, | |
1985 | { "spu", handle_qxfer_spu }, | |
1986 | { "statictrace", handle_qxfer_statictrace }, | |
1987 | { "threads", handle_qxfer_threads }, | |
b3b9301e | 1988 | { "traceframe-info", handle_qxfer_traceframe_info }, |
d08aafef PA |
1989 | }; |
1990 | ||
1991 | static int | |
1992 | handle_qxfer (char *own_buf, int packet_len, int *new_packet_len_p) | |
1993 | { | |
1994 | int i; | |
1995 | char *object; | |
1996 | char *rw; | |
1997 | char *annex; | |
1998 | char *offset; | |
1999 | ||
61012eef | 2000 | if (!startswith (own_buf, "qXfer:")) |
d08aafef PA |
2001 | return 0; |
2002 | ||
2003 | /* Grab the object, r/w and annex. */ | |
2004 | if (decode_xfer (own_buf + 6, &object, &rw, &annex, &offset) < 0) | |
2005 | { | |
2006 | write_enn (own_buf); | |
2007 | return 1; | |
2008 | } | |
2009 | ||
2010 | for (i = 0; | |
2011 | i < sizeof (qxfer_packets) / sizeof (qxfer_packets[0]); | |
2012 | i++) | |
2013 | { | |
2014 | const struct qxfer *q = &qxfer_packets[i]; | |
2015 | ||
2016 | if (strcmp (object, q->object) == 0) | |
2017 | { | |
2018 | if (strcmp (rw, "read") == 0) | |
2019 | { | |
2020 | unsigned char *data; | |
2021 | int n; | |
2022 | CORE_ADDR ofs; | |
2023 | unsigned int len; | |
2024 | ||
2025 | /* Grab the offset and length. */ | |
2026 | if (decode_xfer_read (offset, &ofs, &len) < 0) | |
2027 | { | |
2028 | write_enn (own_buf); | |
2029 | return 1; | |
2030 | } | |
2031 | ||
2032 | /* Read one extra byte, as an indicator of whether there is | |
2033 | more. */ | |
2034 | if (len > PBUFSIZ - 2) | |
2035 | len = PBUFSIZ - 2; | |
224c3ddb | 2036 | data = (unsigned char *) malloc (len + 1); |
d08aafef PA |
2037 | if (data == NULL) |
2038 | { | |
2039 | write_enn (own_buf); | |
2040 | return 1; | |
2041 | } | |
2042 | n = (*q->xfer) (annex, data, NULL, ofs, len + 1); | |
2043 | if (n == -2) | |
2044 | { | |
2045 | free (data); | |
2046 | return 0; | |
2047 | } | |
5cc22e4c MM |
2048 | else if (n == -3) |
2049 | { | |
2050 | /* Preserve error message. */ | |
2051 | } | |
d08aafef PA |
2052 | else if (n < 0) |
2053 | write_enn (own_buf); | |
2054 | else if (n > len) | |
2055 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); | |
2056 | else | |
2057 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); | |
2058 | ||
2059 | free (data); | |
2060 | return 1; | |
2061 | } | |
2062 | else if (strcmp (rw, "write") == 0) | |
2063 | { | |
2064 | int n; | |
2065 | unsigned int len; | |
2066 | CORE_ADDR ofs; | |
2067 | unsigned char *data; | |
2068 | ||
2069 | strcpy (own_buf, "E00"); | |
224c3ddb | 2070 | data = (unsigned char *) malloc (packet_len - (offset - own_buf)); |
d08aafef PA |
2071 | if (data == NULL) |
2072 | { | |
2073 | write_enn (own_buf); | |
2074 | return 1; | |
2075 | } | |
2076 | if (decode_xfer_write (offset, packet_len - (offset - own_buf), | |
2077 | &ofs, &len, data) < 0) | |
2078 | { | |
2079 | free (data); | |
2080 | write_enn (own_buf); | |
2081 | return 1; | |
2082 | } | |
2083 | ||
2084 | n = (*q->xfer) (annex, NULL, data, ofs, len); | |
2085 | if (n == -2) | |
2086 | { | |
2087 | free (data); | |
2088 | return 0; | |
2089 | } | |
5cc22e4c MM |
2090 | else if (n == -3) |
2091 | { | |
2092 | /* Preserve error message. */ | |
2093 | } | |
d08aafef PA |
2094 | else if (n < 0) |
2095 | write_enn (own_buf); | |
2096 | else | |
2097 | sprintf (own_buf, "%x", n); | |
dc146f7c | 2098 | |
d08aafef PA |
2099 | free (data); |
2100 | return 1; | |
2101 | } | |
dc146f7c | 2102 | |
d08aafef PA |
2103 | return 0; |
2104 | } | |
2105 | } | |
dc146f7c | 2106 | |
d08aafef | 2107 | return 0; |
dc146f7c VP |
2108 | } |
2109 | ||
30ba68cb MS |
2110 | /* Compute 32 bit CRC from inferior memory. |
2111 | ||
2112 | On success, return 32 bit CRC. | |
2113 | On failure, return (unsigned long long) -1. */ | |
2114 | ||
2115 | static unsigned long long | |
2116 | crc32 (CORE_ADDR base, int len, unsigned int crc) | |
2117 | { | |
30ba68cb MS |
2118 | while (len--) |
2119 | { | |
2120 | unsigned char byte = 0; | |
2121 | ||
2122 | /* Return failure if memory read fails. */ | |
2123 | if (read_inferior_memory (base, &byte, 1) != 0) | |
2124 | return (unsigned long long) -1; | |
2125 | ||
65da7f14 | 2126 | crc = xcrc32 (&byte, 1, crc); |
30ba68cb MS |
2127 | base++; |
2128 | } | |
2129 | return (unsigned long long) crc; | |
2130 | } | |
2131 | ||
043c3577 MM |
2132 | /* Add supported btrace packets to BUF. */ |
2133 | ||
2134 | static void | |
2135 | supported_btrace_packets (char *buf) | |
2136 | { | |
de6242d3 MM |
2137 | strcat (buf, ";Qbtrace:bts+"); |
2138 | strcat (buf, ";Qbtrace-conf:bts:size+"); | |
2139 | strcat (buf, ";Qbtrace:pt+"); | |
2140 | strcat (buf, ";Qbtrace-conf:pt:size+"); | |
043c3577 MM |
2141 | strcat (buf, ";Qbtrace:off+"); |
2142 | strcat (buf, ";qXfer:btrace:read+"); | |
f4abbc16 | 2143 | strcat (buf, ";qXfer:btrace-conf:read+"); |
043c3577 MM |
2144 | } |
2145 | ||
ce3a066d | 2146 | /* Handle all of the extended 'q' packets. */ |
d08aafef | 2147 | |
5b3da067 | 2148 | static void |
0e7f50da | 2149 | handle_query (char *own_buf, int packet_len, int *new_packet_len_p) |
ce3a066d | 2150 | { |
c12a5089 | 2151 | client_state &cs = get_client_state (); |
9c80ecd6 | 2152 | static std::list<thread_info *>::const_iterator thread_iter; |
0d62e5e8 | 2153 | |
bb63802a | 2154 | /* Reply the current thread id. */ |
db42f210 | 2155 | if (strcmp ("qC", own_buf) == 0 && !disable_packet_qC) |
bb63802a | 2156 | { |
124aceb4 | 2157 | ptid_t ptid; |
f8a4e119 | 2158 | require_running_or_return (own_buf); |
bd99dc85 | 2159 | |
c12a5089 SC |
2160 | if (cs.general_thread != null_ptid && cs.general_thread != minus_one_ptid) |
2161 | ptid = cs.general_thread; | |
bd99dc85 PA |
2162 | else |
2163 | { | |
9c80ecd6 SM |
2164 | thread_iter = all_threads.begin (); |
2165 | ptid = (*thread_iter)->id; | |
bd99dc85 PA |
2166 | } |
2167 | ||
95954743 PA |
2168 | sprintf (own_buf, "QC"); |
2169 | own_buf += 2; | |
124aceb4 | 2170 | write_ptid (own_buf, ptid); |
bb63802a UW |
2171 | return; |
2172 | } | |
2173 | ||
ce3a066d DJ |
2174 | if (strcmp ("qSymbol::", own_buf) == 0) |
2175 | { | |
34c65914 PA |
2176 | struct thread_info *save_thread = current_thread; |
2177 | ||
2178 | /* For qSymbol, GDB only changes the current thread if the | |
2179 | previous current thread was of a different process. So if | |
2180 | the previous thread is gone, we need to pick another one of | |
2181 | the same process. This can happen e.g., if we followed an | |
2182 | exec in a non-leader thread. */ | |
2183 | if (current_thread == NULL) | |
2184 | { | |
2185 | current_thread | |
e99b03dc | 2186 | = find_any_thread_of_pid (cs.general_thread.pid ()); |
34c65914 PA |
2187 | |
2188 | /* Just in case, if we didn't find a thread, then bail out | |
2189 | instead of crashing. */ | |
2190 | if (current_thread == NULL) | |
2191 | { | |
2192 | write_enn (own_buf); | |
2193 | current_thread = save_thread; | |
2194 | return; | |
2195 | } | |
2196 | } | |
2197 | ||
d3bbe7a0 PA |
2198 | /* GDB is suggesting new symbols have been loaded. This may |
2199 | mean a new shared library has been detected as loaded, so | |
2200 | take the opportunity to check if breakpoints we think are | |
2201 | inserted, still are. Note that it isn't guaranteed that | |
2202 | we'll see this when a shared library is loaded, and nor will | |
2203 | we see this for unloads (although breakpoints in unloaded | |
2204 | libraries shouldn't trigger), as GDB may not find symbols for | |
2205 | the library at all. We also re-validate breakpoints when we | |
2206 | see a second GDB breakpoint for the same address, and or when | |
2207 | we access breakpoint shadows. */ | |
2208 | validate_breakpoints (); | |
2209 | ||
fa593d66 PA |
2210 | if (target_supports_tracepoints ()) |
2211 | tracepoint_look_up_symbols (); | |
2212 | ||
f0db101d | 2213 | if (current_thread != NULL && the_target->look_up_symbols != NULL) |
2f2893d9 DJ |
2214 | (*the_target->look_up_symbols) (); |
2215 | ||
34c65914 PA |
2216 | current_thread = save_thread; |
2217 | ||
ce3a066d DJ |
2218 | strcpy (own_buf, "OK"); |
2219 | return; | |
2220 | } | |
2221 | ||
db42f210 | 2222 | if (!disable_packet_qfThreadInfo) |
0d62e5e8 | 2223 | { |
db42f210 | 2224 | if (strcmp ("qfThreadInfo", own_buf) == 0) |
0d62e5e8 | 2225 | { |
f8a4e119 | 2226 | require_running_or_return (own_buf); |
9c80ecd6 | 2227 | thread_iter = all_threads.begin (); |
95954743 PA |
2228 | |
2229 | *own_buf++ = 'm'; | |
9c80ecd6 SM |
2230 | ptid_t ptid = (*thread_iter)->id; |
2231 | write_ptid (own_buf, ptid); | |
2232 | thread_iter++; | |
0d62e5e8 DJ |
2233 | return; |
2234 | } | |
db42f210 PA |
2235 | |
2236 | if (strcmp ("qsThreadInfo", own_buf) == 0) | |
0d62e5e8 | 2237 | { |
f8a4e119 | 2238 | require_running_or_return (own_buf); |
9c80ecd6 | 2239 | if (thread_iter != all_threads.end ()) |
db42f210 | 2240 | { |
95954743 | 2241 | *own_buf++ = 'm'; |
9c80ecd6 SM |
2242 | ptid_t ptid = (*thread_iter)->id; |
2243 | write_ptid (own_buf, ptid); | |
2244 | thread_iter++; | |
db42f210 PA |
2245 | return; |
2246 | } | |
2247 | else | |
2248 | { | |
2249 | sprintf (own_buf, "l"); | |
2250 | return; | |
2251 | } | |
0d62e5e8 DJ |
2252 | } |
2253 | } | |
aa691b87 | 2254 | |
52fb6437 NS |
2255 | if (the_target->read_offsets != NULL |
2256 | && strcmp ("qOffsets", own_buf) == 0) | |
2257 | { | |
2258 | CORE_ADDR text, data; | |
2d717e4f | 2259 | |
f8a4e119 | 2260 | require_running_or_return (own_buf); |
52fb6437 NS |
2261 | if (the_target->read_offsets (&text, &data)) |
2262 | sprintf (own_buf, "Text=%lX;Data=%lX;Bss=%lX", | |
2263 | (long)text, (long)data, (long)data); | |
2264 | else | |
2265 | write_enn (own_buf); | |
1b3f6016 | 2266 | |
52fb6437 NS |
2267 | return; |
2268 | } | |
2269 | ||
be2a5f71 | 2270 | /* Protocol features query. */ |
61012eef | 2271 | if (startswith (own_buf, "qSupported") |
be2a5f71 DJ |
2272 | && (own_buf[10] == ':' || own_buf[10] == '\0')) |
2273 | { | |
95954743 | 2274 | char *p = &own_buf[10]; |
fa593d66 | 2275 | int gdb_supports_qRelocInsn = 0; |
95954743 PA |
2276 | |
2277 | /* Process each feature being provided by GDB. The first | |
2278 | feature will follow a ':', and latter features will follow | |
2279 | ';'. */ | |
2280 | if (*p == ':') | |
d149dd1d PA |
2281 | { |
2282 | char **qsupported = NULL; | |
2283 | int count = 0; | |
06e03fff | 2284 | int unknown = 0; |
d149dd1d PA |
2285 | int i; |
2286 | ||
2287 | /* Two passes, to avoid nested strtok calls in | |
2288 | target_process_qsupported. */ | |
2289 | for (p = strtok (p + 1, ";"); | |
2290 | p != NULL; | |
2291 | p = strtok (NULL, ";")) | |
2292 | { | |
2293 | count++; | |
224c3ddb | 2294 | qsupported = XRESIZEVEC (char *, qsupported, count); |
d149dd1d PA |
2295 | qsupported[count - 1] = xstrdup (p); |
2296 | } | |
2297 | ||
2298 | for (i = 0; i < count; i++) | |
2299 | { | |
2300 | p = qsupported[i]; | |
2301 | if (strcmp (p, "multiprocess+") == 0) | |
2302 | { | |
2303 | /* GDB supports and wants multi-process support if | |
2304 | possible. */ | |
2305 | if (target_supports_multi_process ()) | |
c12a5089 | 2306 | cs.multi_process = 1; |
d149dd1d | 2307 | } |
fa593d66 PA |
2308 | else if (strcmp (p, "qRelocInsn+") == 0) |
2309 | { | |
2310 | /* GDB supports relocate instruction requests. */ | |
2311 | gdb_supports_qRelocInsn = 1; | |
2312 | } | |
1ec68e26 PA |
2313 | else if (strcmp (p, "swbreak+") == 0) |
2314 | { | |
2315 | /* GDB wants us to report whether a trap is caused | |
2316 | by a software breakpoint and for us to handle PC | |
2317 | adjustment if necessary on this target. */ | |
2318 | if (target_supports_stopped_by_sw_breakpoint ()) | |
c12a5089 | 2319 | cs.swbreak_feature = 1; |
1ec68e26 PA |
2320 | } |
2321 | else if (strcmp (p, "hwbreak+") == 0) | |
2322 | { | |
2323 | /* GDB wants us to report whether a trap is caused | |
2324 | by a hardware breakpoint. */ | |
2325 | if (target_supports_stopped_by_hw_breakpoint ()) | |
c12a5089 | 2326 | cs.hwbreak_feature = 1; |
1ec68e26 | 2327 | } |
89245bc0 DB |
2328 | else if (strcmp (p, "fork-events+") == 0) |
2329 | { | |
2330 | /* GDB supports and wants fork events if possible. */ | |
2331 | if (target_supports_fork_events ()) | |
c12a5089 | 2332 | cs.report_fork_events = 1; |
89245bc0 DB |
2333 | } |
2334 | else if (strcmp (p, "vfork-events+") == 0) | |
2335 | { | |
2336 | /* GDB supports and wants vfork events if possible. */ | |
2337 | if (target_supports_vfork_events ()) | |
c12a5089 | 2338 | cs.report_vfork_events = 1; |
89245bc0 | 2339 | } |
7c5d0fad | 2340 | else if (strcmp (p, "exec-events+") == 0) |
94585166 DB |
2341 | { |
2342 | /* GDB supports and wants exec events if possible. */ | |
2343 | if (target_supports_exec_events ()) | |
c12a5089 | 2344 | cs.report_exec_events = 1; |
94585166 | 2345 | } |
750ce8d1 | 2346 | else if (strcmp (p, "vContSupported+") == 0) |
c12a5089 | 2347 | cs.vCont_supported = 1; |
65706a29 PA |
2348 | else if (strcmp (p, "QThreadEvents+") == 0) |
2349 | ; | |
f2faf941 PA |
2350 | else if (strcmp (p, "no-resumed+") == 0) |
2351 | { | |
2352 | /* GDB supports and wants TARGET_WAITKIND_NO_RESUMED | |
2353 | events. */ | |
2354 | report_no_resumed = 1; | |
2355 | } | |
d149dd1d | 2356 | else |
06e03fff PA |
2357 | { |
2358 | /* Move the unknown features all together. */ | |
2359 | qsupported[i] = NULL; | |
2360 | qsupported[unknown] = p; | |
2361 | unknown++; | |
2362 | } | |
d149dd1d PA |
2363 | } |
2364 | ||
06e03fff PA |
2365 | /* Give the target backend a chance to process the unknown |
2366 | features. */ | |
2367 | target_process_qsupported (qsupported, unknown); | |
2368 | ||
2369 | for (i = 0; i < count; i++) | |
2370 | free (qsupported[i]); | |
d149dd1d PA |
2371 | free (qsupported); |
2372 | } | |
95954743 | 2373 | |
9b224c5e | 2374 | sprintf (own_buf, |
0a2dde4a SDJ |
2375 | "PacketSize=%x;QPassSignals+;QProgramSignals+;" |
2376 | "QStartupWithShell+;QEnvironmentHexEncoded+;" | |
bc3b087d SDJ |
2377 | "QEnvironmentReset+;QEnvironmentUnset+;" |
2378 | "QSetWorkingDir+", | |
9b224c5e | 2379 | PBUFSIZ - 1); |
0876f84a | 2380 | |
82075af2 JS |
2381 | if (target_supports_catch_syscall ()) |
2382 | strcat (own_buf, ";QCatchSyscalls+"); | |
2383 | ||
2268b414 | 2384 | if (the_target->qxfer_libraries_svr4 != NULL) |
b1fbec62 GB |
2385 | strcat (own_buf, ";qXfer:libraries-svr4:read+" |
2386 | ";augmented-libraries-svr4-read+"); | |
2268b414 JK |
2387 | else |
2388 | { | |
2389 | /* We do not have any hook to indicate whether the non-SVR4 target | |
2390 | backend supports qXfer:libraries:read, so always report it. */ | |
2391 | strcat (own_buf, ";qXfer:libraries:read+"); | |
2392 | } | |
255e7678 | 2393 | |
0876f84a | 2394 | if (the_target->read_auxv != NULL) |
9f2e1e63 | 2395 | strcat (own_buf, ";qXfer:auxv:read+"); |
2d717e4f | 2396 | |
0e7f50da UW |
2397 | if (the_target->qxfer_spu != NULL) |
2398 | strcat (own_buf, ";qXfer:spu:read+;qXfer:spu:write+"); | |
0876f84a | 2399 | |
4aa995e1 PA |
2400 | if (the_target->qxfer_siginfo != NULL) |
2401 | strcat (own_buf, ";qXfer:siginfo:read+;qXfer:siginfo:write+"); | |
2402 | ||
78d85199 YQ |
2403 | if (the_target->read_loadmap != NULL) |
2404 | strcat (own_buf, ";qXfer:fdpic:read+"); | |
2405 | ||
221c031f UW |
2406 | /* We always report qXfer:features:read, as targets may |
2407 | install XML files on a subsequent call to arch_setup. | |
2408 | If we reported to GDB on startup that we don't support | |
2409 | qXfer:feature:read at all, we will never be re-queried. */ | |
2410 | strcat (own_buf, ";qXfer:features:read+"); | |
23181151 | 2411 | |
c12a5089 | 2412 | if (cs.transport_is_reliable) |
a6f3e723 | 2413 | strcat (own_buf, ";QStartNoAckMode+"); |
07e059b5 VP |
2414 | |
2415 | if (the_target->qxfer_osdata != NULL) | |
1b3f6016 | 2416 | strcat (own_buf, ";qXfer:osdata:read+"); |
07e059b5 | 2417 | |
cf8fd78b PA |
2418 | if (target_supports_multi_process ()) |
2419 | strcat (own_buf, ";multiprocess+"); | |
95954743 | 2420 | |
89245bc0 DB |
2421 | if (target_supports_fork_events ()) |
2422 | strcat (own_buf, ";fork-events+"); | |
2423 | ||
2424 | if (target_supports_vfork_events ()) | |
2425 | strcat (own_buf, ";vfork-events+"); | |
2426 | ||
94585166 DB |
2427 | if (target_supports_exec_events ()) |
2428 | strcat (own_buf, ";exec-events+"); | |
2429 | ||
bd99dc85 PA |
2430 | if (target_supports_non_stop ()) |
2431 | strcat (own_buf, ";QNonStop+"); | |
2432 | ||
03583c20 UW |
2433 | if (target_supports_disable_randomization ()) |
2434 | strcat (own_buf, ";QDisableRandomization+"); | |
2435 | ||
dc146f7c VP |
2436 | strcat (own_buf, ";qXfer:threads:read+"); |
2437 | ||
219f2f23 PA |
2438 | if (target_supports_tracepoints ()) |
2439 | { | |
2440 | strcat (own_buf, ";ConditionalTracepoints+"); | |
2441 | strcat (own_buf, ";TraceStateVariables+"); | |
2442 | strcat (own_buf, ";TracepointSource+"); | |
8336d594 | 2443 | strcat (own_buf, ";DisconnectedTracing+"); |
fa593d66 PA |
2444 | if (gdb_supports_qRelocInsn && target_supports_fast_tracepoints ()) |
2445 | strcat (own_buf, ";FastTracepoints+"); | |
0fb4aa4b | 2446 | strcat (own_buf, ";StaticTracepoints+"); |
1e4d1764 | 2447 | strcat (own_buf, ";InstallInTrace+"); |
0fb4aa4b | 2448 | strcat (own_buf, ";qXfer:statictrace:read+"); |
b3b9301e | 2449 | strcat (own_buf, ";qXfer:traceframe-info:read+"); |
d248b706 | 2450 | strcat (own_buf, ";EnableDisableTracepoints+"); |
f6f899bf | 2451 | strcat (own_buf, ";QTBuffer:size+"); |
3065dfb6 | 2452 | strcat (own_buf, ";tracenz+"); |
219f2f23 PA |
2453 | } |
2454 | ||
bd2b2909 AT |
2455 | if (target_supports_hardware_single_step () |
2456 | || target_supports_software_single_step () ) | |
70b90b91 | 2457 | { |
70b90b91 YQ |
2458 | strcat (own_buf, ";ConditionalBreakpoints+"); |
2459 | } | |
d3ce09f5 | 2460 | strcat (own_buf, ";BreakpointCommands+"); |
9f3a5c85 | 2461 | |
d1feda86 YQ |
2462 | if (target_supports_agent ()) |
2463 | strcat (own_buf, ";QAgent+"); | |
2464 | ||
043c3577 | 2465 | supported_btrace_packets (own_buf); |
9accd112 | 2466 | |
1ec68e26 PA |
2467 | if (target_supports_stopped_by_sw_breakpoint ()) |
2468 | strcat (own_buf, ";swbreak+"); | |
2469 | ||
2470 | if (target_supports_stopped_by_hw_breakpoint ()) | |
2471 | strcat (own_buf, ";hwbreak+"); | |
2472 | ||
e57f1de3 GB |
2473 | if (the_target->pid_to_exec_file != NULL) |
2474 | strcat (own_buf, ";qXfer:exec-file:read+"); | |
2475 | ||
750ce8d1 YQ |
2476 | strcat (own_buf, ";vContSupported+"); |
2477 | ||
65706a29 PA |
2478 | strcat (own_buf, ";QThreadEvents+"); |
2479 | ||
f2faf941 PA |
2480 | strcat (own_buf, ";no-resumed+"); |
2481 | ||
14d2069a GB |
2482 | /* Reinitialize components as needed for the new connection. */ |
2483 | hostio_handle_new_gdb_connection (); | |
de0d863e DB |
2484 | target_handle_new_gdb_connection (); |
2485 | ||
be2a5f71 DJ |
2486 | return; |
2487 | } | |
2488 | ||
dae5f5cf DJ |
2489 | /* Thread-local storage support. */ |
2490 | if (the_target->get_tls_address != NULL | |
61012eef | 2491 | && startswith (own_buf, "qGetTLSAddr:")) |
dae5f5cf DJ |
2492 | { |
2493 | char *p = own_buf + 12; | |
5b1c542e | 2494 | CORE_ADDR parts[2], address = 0; |
dae5f5cf | 2495 | int i, err; |
95954743 | 2496 | ptid_t ptid = null_ptid; |
dae5f5cf | 2497 | |
f8a4e119 | 2498 | require_running_or_return (own_buf); |
2d717e4f | 2499 | |
dae5f5cf DJ |
2500 | for (i = 0; i < 3; i++) |
2501 | { | |
2502 | char *p2; | |
2503 | int len; | |
2504 | ||
2505 | if (p == NULL) | |
2506 | break; | |
2507 | ||
2508 | p2 = strchr (p, ','); | |
2509 | if (p2) | |
2510 | { | |
2511 | len = p2 - p; | |
2512 | p2++; | |
2513 | } | |
2514 | else | |
2515 | { | |
2516 | len = strlen (p); | |
2517 | p2 = NULL; | |
2518 | } | |
2519 | ||
5b1c542e | 2520 | if (i == 0) |
95954743 | 2521 | ptid = read_ptid (p, NULL); |
5b1c542e PA |
2522 | else |
2523 | decode_address (&parts[i - 1], p, len); | |
dae5f5cf DJ |
2524 | p = p2; |
2525 | } | |
2526 | ||
2527 | if (p != NULL || i < 3) | |
2528 | err = 1; | |
2529 | else | |
2530 | { | |
e09875d4 | 2531 | struct thread_info *thread = find_thread_ptid (ptid); |
dae5f5cf DJ |
2532 | |
2533 | if (thread == NULL) | |
2534 | err = 2; | |
2535 | else | |
5b1c542e | 2536 | err = the_target->get_tls_address (thread, parts[0], parts[1], |
dae5f5cf DJ |
2537 | &address); |
2538 | } | |
2539 | ||
2540 | if (err == 0) | |
2541 | { | |
c6f46ca0 | 2542 | strcpy (own_buf, paddress(address)); |
dae5f5cf DJ |
2543 | return; |
2544 | } | |
2545 | else if (err > 0) | |
2546 | { | |
2547 | write_enn (own_buf); | |
2548 | return; | |
2549 | } | |
2550 | ||
2551 | /* Otherwise, pretend we do not understand this packet. */ | |
2552 | } | |
2553 | ||
711e434b PM |
2554 | /* Windows OS Thread Information Block address support. */ |
2555 | if (the_target->get_tib_address != NULL | |
61012eef | 2556 | && startswith (own_buf, "qGetTIBAddr:")) |
711e434b | 2557 | { |
256642e8 | 2558 | const char *annex; |
711e434b PM |
2559 | int n; |
2560 | CORE_ADDR tlb; | |
2561 | ptid_t ptid = read_ptid (own_buf + 12, &annex); | |
2562 | ||
2563 | n = (*the_target->get_tib_address) (ptid, &tlb); | |
2564 | if (n == 1) | |
2565 | { | |
c6f46ca0 | 2566 | strcpy (own_buf, paddress(tlb)); |
711e434b PM |
2567 | return; |
2568 | } | |
2569 | else if (n == 0) | |
2570 | { | |
2571 | write_enn (own_buf); | |
2572 | return; | |
2573 | } | |
2574 | return; | |
2575 | } | |
2576 | ||
c74d0ad8 | 2577 | /* Handle "monitor" commands. */ |
61012eef | 2578 | if (startswith (own_buf, "qRcmd,")) |
c74d0ad8 | 2579 | { |
224c3ddb | 2580 | char *mon = (char *) malloc (PBUFSIZ); |
c74d0ad8 DJ |
2581 | int len = strlen (own_buf + 6); |
2582 | ||
aef93bd7 DE |
2583 | if (mon == NULL) |
2584 | { | |
2585 | write_enn (own_buf); | |
2586 | return; | |
2587 | } | |
2588 | ||
ff0e980e TT |
2589 | if ((len % 2) != 0 |
2590 | || hex2bin (own_buf + 6, (gdb_byte *) mon, len / 2) != len / 2) | |
c74d0ad8 DJ |
2591 | { |
2592 | write_enn (own_buf); | |
2593 | free (mon); | |
2594 | return; | |
2595 | } | |
2596 | mon[len / 2] = '\0'; | |
2597 | ||
2598 | write_ok (own_buf); | |
2599 | ||
cdbfd419 PP |
2600 | if (the_target->handle_monitor_command == NULL |
2601 | || (*the_target->handle_monitor_command) (mon) == 0) | |
2602 | /* Default processing. */ | |
d73f2619 | 2603 | handle_monitor_command (mon, own_buf); |
c74d0ad8 DJ |
2604 | |
2605 | free (mon); | |
2606 | return; | |
2607 | } | |
2608 | ||
61012eef | 2609 | if (startswith (own_buf, "qSearch:memory:")) |
08388c79 | 2610 | { |
f8a4e119 | 2611 | require_running_or_return (own_buf); |
08388c79 DE |
2612 | handle_search_memory (own_buf, packet_len); |
2613 | return; | |
2614 | } | |
2615 | ||
95954743 | 2616 | if (strcmp (own_buf, "qAttached") == 0 |
61012eef | 2617 | || startswith (own_buf, "qAttached:")) |
0b16c5cf | 2618 | { |
95954743 PA |
2619 | struct process_info *process; |
2620 | ||
2621 | if (own_buf[sizeof ("qAttached") - 1]) | |
2622 | { | |
2623 | int pid = strtoul (own_buf + sizeof ("qAttached:") - 1, NULL, 16); | |
9179355e | 2624 | process = find_process_pid (pid); |
95954743 PA |
2625 | } |
2626 | else | |
2627 | { | |
f8a4e119 | 2628 | require_running_or_return (own_buf); |
95954743 PA |
2629 | process = current_process (); |
2630 | } | |
2631 | ||
2632 | if (process == NULL) | |
2633 | { | |
2634 | write_enn (own_buf); | |
2635 | return; | |
2636 | } | |
2637 | ||
2638 | strcpy (own_buf, process->attached ? "1" : "0"); | |
0b16c5cf PA |
2639 | return; |
2640 | } | |
2641 | ||
61012eef | 2642 | if (startswith (own_buf, "qCRC:")) |
30ba68cb MS |
2643 | { |
2644 | /* CRC check (compare-section). */ | |
256642e8 | 2645 | const char *comma; |
aca22551 | 2646 | ULONGEST base; |
30ba68cb MS |
2647 | int len; |
2648 | unsigned long long crc; | |
2649 | ||
f8a4e119 | 2650 | require_running_or_return (own_buf); |
aca22551 | 2651 | comma = unpack_varlen_hex (own_buf + 5, &base); |
30ba68cb MS |
2652 | if (*comma++ != ',') |
2653 | { | |
2654 | write_enn (own_buf); | |
2655 | return; | |
2656 | } | |
2657 | len = strtoul (comma, NULL, 16); | |
2658 | crc = crc32 (base, len, 0xffffffff); | |
2659 | /* Check for memory failure. */ | |
2660 | if (crc == (unsigned long long) -1) | |
2661 | { | |
2662 | write_enn (own_buf); | |
2663 | return; | |
2664 | } | |
2665 | sprintf (own_buf, "C%lx", (unsigned long) crc); | |
2666 | return; | |
2667 | } | |
2668 | ||
d08aafef PA |
2669 | if (handle_qxfer (own_buf, packet_len, new_packet_len_p)) |
2670 | return; | |
2671 | ||
219f2f23 PA |
2672 | if (target_supports_tracepoints () && handle_tracepoint_query (own_buf)) |
2673 | return; | |
2674 | ||
ce3a066d DJ |
2675 | /* Otherwise we didn't know what packet it was. Say we didn't |
2676 | understand it. */ | |
2677 | own_buf[0] = 0; | |
2678 | } | |
2679 | ||
ce1a5b52 | 2680 | static void gdb_wants_all_threads_stopped (void); |
b7ea362b PA |
2681 | static void resume (struct thread_resume *actions, size_t n); |
2682 | ||
649ebbca DE |
2683 | /* The callback that is passed to visit_actioned_threads. */ |
2684 | typedef int (visit_actioned_threads_callback_ftype) | |
2685 | (const struct thread_resume *, struct thread_info *); | |
2686 | ||
b7ea362b PA |
2687 | /* Call CALLBACK for any thread to which ACTIONS applies to. Returns |
2688 | true if CALLBACK returns true. Returns false if no matching thread | |
649ebbca | 2689 | is found or CALLBACK results false. |
eaddb425 | 2690 | Note: This function is itself a callback for find_thread. */ |
b7ea362b | 2691 | |
eaddb425 SM |
2692 | static bool |
2693 | visit_actioned_threads (thread_info *thread, | |
2694 | const struct thread_resume *actions, | |
2695 | size_t num_actions, | |
2696 | visit_actioned_threads_callback_ftype *callback) | |
b7ea362b | 2697 | { |
eaddb425 | 2698 | for (size_t i = 0; i < num_actions; i++) |
b7ea362b | 2699 | { |
649ebbca | 2700 | const struct thread_resume *action = &actions[i]; |
b7ea362b | 2701 | |
d7e15655 TT |
2702 | if (action->thread == minus_one_ptid |
2703 | || action->thread == thread->id | |
e99b03dc | 2704 | || ((action->thread.pid () |
9c80ecd6 | 2705 | == thread->id.pid ()) |
e38504b3 | 2706 | && action->thread.lwp () == -1)) |
b7ea362b | 2707 | { |
649ebbca | 2708 | if ((*callback) (action, thread)) |
eaddb425 | 2709 | return true; |
b7ea362b PA |
2710 | } |
2711 | } | |
2712 | ||
eaddb425 | 2713 | return false; |
b7ea362b PA |
2714 | } |
2715 | ||
2716 | /* Callback for visit_actioned_threads. If the thread has a pending | |
2717 | status to report, report it now. */ | |
2718 | ||
2719 | static int | |
2720 | handle_pending_status (const struct thread_resume *resumption, | |
2721 | struct thread_info *thread) | |
2722 | { | |
c12a5089 | 2723 | client_state &cs = get_client_state (); |
b7ea362b PA |
2724 | if (thread->status_pending_p) |
2725 | { | |
2726 | thread->status_pending_p = 0; | |
2727 | ||
c12a5089 SC |
2728 | cs.last_status = thread->last_status; |
2729 | cs.last_ptid = thread->id; | |
2730 | prepare_resume_reply (cs.own_buf, cs.last_ptid, &cs.last_status); | |
b7ea362b PA |
2731 | return 1; |
2732 | } | |
2733 | return 0; | |
2734 | } | |
ce1a5b52 | 2735 | |
64386c31 | 2736 | /* Parse vCont packets. */ |
5b3da067 | 2737 | static void |
5b1c542e | 2738 | handle_v_cont (char *own_buf) |
64386c31 | 2739 | { |
256642e8 | 2740 | const char *p; |
64386c31 | 2741 | int n = 0, i = 0; |
2bd7c093 | 2742 | struct thread_resume *resume_info; |
436252de | 2743 | struct thread_resume default_action { null_ptid }; |
64386c31 DJ |
2744 | |
2745 | /* Count the number of semicolons in the packet. There should be one | |
2746 | for every action. */ | |
2747 | p = &own_buf[5]; | |
2748 | while (p) | |
2749 | { | |
2750 | n++; | |
2751 | p++; | |
2752 | p = strchr (p, ';'); | |
2753 | } | |
2bd7c093 | 2754 | |
224c3ddb | 2755 | resume_info = (struct thread_resume *) malloc (n * sizeof (resume_info[0])); |
aef93bd7 DE |
2756 | if (resume_info == NULL) |
2757 | goto err; | |
64386c31 | 2758 | |
64386c31 | 2759 | p = &own_buf[5]; |
64386c31 DJ |
2760 | while (*p) |
2761 | { | |
2762 | p++; | |
2763 | ||
c2d6af84 PA |
2764 | memset (&resume_info[i], 0, sizeof resume_info[i]); |
2765 | ||
64386c31 | 2766 | if (p[0] == 's' || p[0] == 'S') |
bd99dc85 | 2767 | resume_info[i].kind = resume_step; |
c2d6af84 PA |
2768 | else if (p[0] == 'r') |
2769 | resume_info[i].kind = resume_step; | |
64386c31 | 2770 | else if (p[0] == 'c' || p[0] == 'C') |
bd99dc85 PA |
2771 | resume_info[i].kind = resume_continue; |
2772 | else if (p[0] == 't') | |
2773 | resume_info[i].kind = resume_stop; | |
64386c31 DJ |
2774 | else |
2775 | goto err; | |
2776 | ||
2777 | if (p[0] == 'S' || p[0] == 'C') | |
2778 | { | |
256642e8 PA |
2779 | char *q; |
2780 | int sig = strtol (p + 1, &q, 16); | |
64386c31 DJ |
2781 | if (p == q) |
2782 | goto err; | |
2783 | p = q; | |
2784 | ||
e053fbc4 | 2785 | if (!gdb_signal_to_host_p ((enum gdb_signal) sig)) |
64386c31 | 2786 | goto err; |
e053fbc4 | 2787 | resume_info[i].sig = gdb_signal_to_host ((enum gdb_signal) sig); |
64386c31 | 2788 | } |
c2d6af84 PA |
2789 | else if (p[0] == 'r') |
2790 | { | |
6740dc9c | 2791 | ULONGEST addr; |
c2d6af84 | 2792 | |
6740dc9c PA |
2793 | p = unpack_varlen_hex (p + 1, &addr); |
2794 | resume_info[i].step_range_start = addr; | |
c2d6af84 | 2795 | |
6740dc9c PA |
2796 | if (*p != ',') |
2797 | goto err; | |
c2d6af84 | 2798 | |
6740dc9c PA |
2799 | p = unpack_varlen_hex (p + 1, &addr); |
2800 | resume_info[i].step_range_end = addr; | |
c2d6af84 | 2801 | } |
64386c31 DJ |
2802 | else |
2803 | { | |
64386c31 DJ |
2804 | p = p + 1; |
2805 | } | |
2806 | ||
2807 | if (p[0] == 0) | |
2808 | { | |
95954743 | 2809 | resume_info[i].thread = minus_one_ptid; |
64386c31 DJ |
2810 | default_action = resume_info[i]; |
2811 | ||
2812 | /* Note: we don't increment i here, we'll overwrite this entry | |
2813 | the next time through. */ | |
2814 | } | |
2815 | else if (p[0] == ':') | |
2816 | { | |
256642e8 | 2817 | const char *q; |
95954743 | 2818 | ptid_t ptid = read_ptid (p + 1, &q); |
a06660f7 | 2819 | |
64386c31 DJ |
2820 | if (p == q) |
2821 | goto err; | |
2822 | p = q; | |
2823 | if (p[0] != ';' && p[0] != 0) | |
2824 | goto err; | |
2825 | ||
95954743 | 2826 | resume_info[i].thread = ptid; |
a06660f7 | 2827 | |
64386c31 DJ |
2828 | i++; |
2829 | } | |
2830 | } | |
2831 | ||
2bd7c093 PA |
2832 | if (i < n) |
2833 | resume_info[i] = default_action; | |
64386c31 | 2834 | |
b7ea362b PA |
2835 | resume (resume_info, n); |
2836 | free (resume_info); | |
2837 | return; | |
2838 | ||
2839 | err: | |
2840 | write_enn (own_buf); | |
2841 | free (resume_info); | |
2842 | return; | |
2843 | } | |
2844 | ||
2845 | /* Resume target with ACTIONS, an array of NUM_ACTIONS elements. */ | |
2846 | ||
2847 | static void | |
2848 | resume (struct thread_resume *actions, size_t num_actions) | |
2849 | { | |
c12a5089 | 2850 | client_state &cs = get_client_state (); |
bd99dc85 | 2851 | if (!non_stop) |
b7ea362b PA |
2852 | { |
2853 | /* Check if among the threads that GDB wants actioned, there's | |
2854 | one with a pending status to report. If so, skip actually | |
2855 | resuming/stopping and report the pending event | |
2856 | immediately. */ | |
649ebbca | 2857 | |
eaddb425 SM |
2858 | thread_info *thread_with_status = find_thread ([&] (thread_info *thread) |
2859 | { | |
2860 | return visit_actioned_threads (thread, actions, num_actions, | |
2861 | handle_pending_status); | |
2862 | }); | |
2863 | ||
2864 | if (thread_with_status != NULL) | |
b7ea362b | 2865 | return; |
bd99dc85 | 2866 | |
b7ea362b PA |
2867 | enable_async_io (); |
2868 | } | |
64386c31 | 2869 | |
b7ea362b | 2870 | (*the_target->resume) (actions, num_actions); |
64386c31 | 2871 | |
bd99dc85 | 2872 | if (non_stop) |
c12a5089 | 2873 | write_ok (cs.own_buf); |
bd99dc85 PA |
2874 | else |
2875 | { | |
c12a5089 | 2876 | cs.last_ptid = mywait (minus_one_ptid, &cs.last_status, 0, 1); |
ce1a5b52 | 2877 | |
c12a5089 | 2878 | if (cs.last_status.kind == TARGET_WAITKIND_NO_RESUMED |
f2faf941 | 2879 | && !report_no_resumed) |
fa96cb38 | 2880 | { |
f2faf941 PA |
2881 | /* The client does not support this stop reply. At least |
2882 | return error. */ | |
c12a5089 | 2883 | sprintf (cs.own_buf, "E.No unwaited-for children left."); |
fa96cb38 PA |
2884 | disable_async_io (); |
2885 | return; | |
2886 | } | |
2887 | ||
c12a5089 SC |
2888 | if (cs.last_status.kind != TARGET_WAITKIND_EXITED |
2889 | && cs.last_status.kind != TARGET_WAITKIND_SIGNALLED | |
2890 | && cs.last_status.kind != TARGET_WAITKIND_NO_RESUMED) | |
2891 | current_thread->last_status = cs.last_status; | |
d20a8ad9 | 2892 | |
ce1a5b52 PA |
2893 | /* From the client's perspective, all-stop mode always stops all |
2894 | threads implicitly (and the target backend has already done | |
2895 | so by now). Tag all threads as "want-stopped", so we don't | |
2896 | resume them implicitly without the client telling us to. */ | |
2897 | gdb_wants_all_threads_stopped (); | |
c12a5089 | 2898 | prepare_resume_reply (cs.own_buf, cs.last_ptid, &cs.last_status); |
bd99dc85 | 2899 | disable_async_io (); |
6bd31874 | 2900 | |
c12a5089 SC |
2901 | if (cs.last_status.kind == TARGET_WAITKIND_EXITED |
2902 | || cs.last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2903 | target_mourn_inferior (cs.last_ptid); | |
bd99dc85 | 2904 | } |
64386c31 DJ |
2905 | } |
2906 | ||
2d717e4f | 2907 | /* Attach to a new program. Return 1 if successful, 0 if failure. */ |
5b3da067 | 2908 | static int |
5b1c542e | 2909 | handle_v_attach (char *own_buf) |
2d717e4f | 2910 | { |
c12a5089 | 2911 | client_state &cs = get_client_state (); |
2d717e4f DJ |
2912 | int pid; |
2913 | ||
2914 | pid = strtol (own_buf + 8, NULL, 16); | |
5b1c542e | 2915 | if (pid != 0 && attach_inferior (pid) == 0) |
2d717e4f | 2916 | { |
aeba519e PA |
2917 | /* Don't report shared library events after attaching, even if |
2918 | some libraries are preloaded. GDB will always poll the | |
2919 | library list. Avoids the "stopped by shared library event" | |
2920 | notice on the GDB side. */ | |
2921 | dlls_changed = 0; | |
bd99dc85 PA |
2922 | |
2923 | if (non_stop) | |
2924 | { | |
2925 | /* In non-stop, we don't send a resume reply. Stop events | |
2926 | will follow up using the normal notification | |
2927 | mechanism. */ | |
2928 | write_ok (own_buf); | |
2929 | } | |
2930 | else | |
c12a5089 | 2931 | prepare_resume_reply (own_buf, cs.last_ptid, &cs.last_status); |
bd99dc85 | 2932 | |
2d717e4f DJ |
2933 | return 1; |
2934 | } | |
2935 | else | |
2936 | { | |
2937 | write_enn (own_buf); | |
2938 | return 0; | |
2939 | } | |
2940 | } | |
2941 | ||
2942 | /* Run a new program. Return 1 if successful, 0 if failure. */ | |
2943 | static int | |
5b1c542e | 2944 | handle_v_run (char *own_buf) |
2d717e4f | 2945 | { |
c12a5089 | 2946 | client_state &cs = get_client_state (); |
7c5ded6a SDJ |
2947 | char *p, *next_p; |
2948 | std::vector<char *> new_argv; | |
2090129c | 2949 | char *new_program_name = NULL; |
2d717e4f DJ |
2950 | int i, new_argc; |
2951 | ||
2952 | new_argc = 0; | |
2953 | for (p = own_buf + strlen ("vRun;"); p && *p; p = strchr (p, ';')) | |
2954 | { | |
2955 | p++; | |
2956 | new_argc++; | |
2957 | } | |
2958 | ||
7c5ded6a | 2959 | for (i = 0, p = own_buf + strlen ("vRun;"); *p; p = next_p, ++i) |
2d717e4f DJ |
2960 | { |
2961 | next_p = strchr (p, ';'); | |
2962 | if (next_p == NULL) | |
2963 | next_p = p + strlen (p); | |
2964 | ||
2965 | if (i == 0 && p == next_p) | |
7c5ded6a SDJ |
2966 | { |
2967 | /* No program specified. */ | |
2090129c SDJ |
2968 | new_program_name = NULL; |
2969 | } | |
2970 | else if (p == next_p) | |
2971 | { | |
2972 | /* Empty argument. */ | |
2973 | new_argv.push_back (xstrdup ("''")); | |
7c5ded6a | 2974 | } |
2d717e4f DJ |
2975 | else |
2976 | { | |
7c5ded6a | 2977 | size_t len = (next_p - p) / 2; |
2090129c | 2978 | /* ARG is the unquoted argument received via the RSP. */ |
7c5ded6a | 2979 | char *arg = (char *) xmalloc (len + 1); |
2090129c SDJ |
2980 | /* FULL_ARGS will contain the quoted version of ARG. */ |
2981 | char *full_arg = (char *) xmalloc ((len + 1) * 2); | |
2982 | /* These are pointers used to navigate the strings above. */ | |
2983 | char *tmp_arg = arg; | |
2984 | char *tmp_full_arg = full_arg; | |
2985 | int need_quote = 0; | |
7c5ded6a SDJ |
2986 | |
2987 | hex2bin (p, (gdb_byte *) arg, len); | |
2988 | arg[len] = '\0'; | |
2d717e4f | 2989 | |
2090129c SDJ |
2990 | while (*tmp_arg != '\0') |
2991 | { | |
2992 | switch (*tmp_arg) | |
2993 | { | |
2994 | case '\n': | |
2995 | /* Quote \n. */ | |
2996 | *tmp_full_arg = '\''; | |
2997 | ++tmp_full_arg; | |
2998 | need_quote = 1; | |
2999 | break; | |
3000 | ||
3001 | case '\'': | |
3002 | /* Quote single quote. */ | |
3003 | *tmp_full_arg = '\\'; | |
3004 | ++tmp_full_arg; | |
3005 | break; | |
3006 | ||
3007 | default: | |
3008 | break; | |
3009 | } | |
3010 | ||
3011 | *tmp_full_arg = *tmp_arg; | |
3012 | ++tmp_full_arg; | |
3013 | ++tmp_arg; | |
3014 | } | |
3015 | ||
3016 | if (need_quote) | |
3017 | *tmp_full_arg++ = '\''; | |
3018 | ||
3019 | /* Finish FULL_ARG and push it into the vector containing | |
3020 | the argv. */ | |
3021 | *tmp_full_arg = '\0'; | |
3022 | if (i == 0) | |
3023 | new_program_name = full_arg; | |
3024 | else | |
3025 | new_argv.push_back (full_arg); | |
3026 | xfree (arg); | |
3027 | } | |
2d717e4f DJ |
3028 | if (*next_p) |
3029 | next_p++; | |
2d717e4f | 3030 | } |
7c5ded6a | 3031 | new_argv.push_back (NULL); |
2d717e4f | 3032 | |
2090129c | 3033 | if (new_program_name == NULL) |
2d717e4f | 3034 | { |
f142445f DJ |
3035 | /* GDB didn't specify a program to run. Use the program from the |
3036 | last run with the new argument list. */ | |
25e3c82c | 3037 | if (program_path.get () == NULL) |
2d717e4f DJ |
3038 | { |
3039 | write_enn (own_buf); | |
7c5ded6a | 3040 | free_vector_argv (new_argv); |
2d717e4f DJ |
3041 | return 0; |
3042 | } | |
2090129c SDJ |
3043 | } |
3044 | else | |
25e3c82c | 3045 | program_path.set (gdb::unique_xmalloc_ptr<char> (new_program_name)); |
f142445f | 3046 | |
aef93bd7 | 3047 | /* Free the old argv and install the new one. */ |
2090129c SDJ |
3048 | free_vector_argv (program_args); |
3049 | program_args = new_argv; | |
3050 | ||
25e3c82c | 3051 | create_inferior (program_path.get (), program_args); |
2d717e4f | 3052 | |
c12a5089 | 3053 | if (cs.last_status.kind == TARGET_WAITKIND_STOPPED) |
2d717e4f | 3054 | { |
c12a5089 | 3055 | prepare_resume_reply (own_buf, cs.last_ptid, &cs.last_status); |
bd99dc85 PA |
3056 | |
3057 | /* In non-stop, sending a resume reply doesn't set the general | |
3058 | thread, but GDB assumes a vRun sets it (this is so GDB can | |
3059 | query which is the main thread of the new inferior. */ | |
3060 | if (non_stop) | |
c12a5089 | 3061 | cs.general_thread = cs.last_ptid; |
bd99dc85 | 3062 | |
2d717e4f DJ |
3063 | return 1; |
3064 | } | |
3065 | else | |
3066 | { | |
3067 | write_enn (own_buf); | |
3068 | return 0; | |
3069 | } | |
3070 | } | |
3071 | ||
95954743 | 3072 | /* Kill process. Return 1 if successful, 0 if failure. */ |
5b3da067 | 3073 | static int |
95954743 PA |
3074 | handle_v_kill (char *own_buf) |
3075 | { | |
c12a5089 | 3076 | client_state &cs = get_client_state (); |
95954743 PA |
3077 | int pid; |
3078 | char *p = &own_buf[6]; | |
c12a5089 | 3079 | if (cs.multi_process) |
0f54c268 PM |
3080 | pid = strtol (p, NULL, 16); |
3081 | else | |
3082 | pid = signal_pid; | |
a780ef4f PA |
3083 | |
3084 | process_info *proc = find_process_pid (pid); | |
3085 | ||
3086 | if (proc != nullptr && kill_inferior (proc) == 0) | |
95954743 | 3087 | { |
c12a5089 SC |
3088 | cs.last_status.kind = TARGET_WAITKIND_SIGNALLED; |
3089 | cs.last_status.value.sig = GDB_SIGNAL_KILL; | |
f2907e49 | 3090 | cs.last_ptid = ptid_t (pid); |
c12a5089 | 3091 | discard_queued_stop_replies (cs.last_ptid); |
95954743 PA |
3092 | write_ok (own_buf); |
3093 | return 1; | |
3094 | } | |
3095 | else | |
3096 | { | |
3097 | write_enn (own_buf); | |
3098 | return 0; | |
3099 | } | |
3100 | } | |
3101 | ||
64386c31 | 3102 | /* Handle all of the extended 'v' packets. */ |
28170b88 | 3103 | void |
5b1c542e | 3104 | handle_v_requests (char *own_buf, int packet_len, int *new_packet_len) |
64386c31 | 3105 | { |
c12a5089 | 3106 | client_state &cs = get_client_state (); |
db42f210 | 3107 | if (!disable_packet_vCont) |
64386c31 | 3108 | { |
de979965 PA |
3109 | if (strcmp (own_buf, "vCtrlC") == 0) |
3110 | { | |
3111 | (*the_target->request_interrupt) (); | |
3112 | write_ok (own_buf); | |
3113 | return; | |
3114 | } | |
3115 | ||
61012eef | 3116 | if (startswith (own_buf, "vCont;")) |
db42f210 | 3117 | { |
5b1c542e | 3118 | handle_v_cont (own_buf); |
db42f210 PA |
3119 | return; |
3120 | } | |
64386c31 | 3121 | |
61012eef | 3122 | if (startswith (own_buf, "vCont?")) |
db42f210 | 3123 | { |
750ce8d1 YQ |
3124 | strcpy (own_buf, "vCont;c;C;t"); |
3125 | ||
21536b36 YQ |
3126 | if (target_supports_hardware_single_step () |
3127 | || target_supports_software_single_step () | |
c12a5089 | 3128 | || !cs.vCont_supported) |
750ce8d1 | 3129 | { |
21536b36 YQ |
3130 | /* If target supports single step either by hardware or by |
3131 | software, add actions s and S to the list of supported | |
3132 | actions. On the other hand, if GDB doesn't request the | |
3133 | supported vCont actions in qSupported packet, add s and | |
3134 | S to the list too. */ | |
750ce8d1 YQ |
3135 | own_buf = own_buf + strlen (own_buf); |
3136 | strcpy (own_buf, ";s;S"); | |
3137 | } | |
3138 | ||
c2d6af84 PA |
3139 | if (target_supports_range_stepping ()) |
3140 | { | |
3141 | own_buf = own_buf + strlen (own_buf); | |
3142 | strcpy (own_buf, ";r"); | |
3143 | } | |
db42f210 PA |
3144 | return; |
3145 | } | |
64386c31 DJ |
3146 | } |
3147 | ||
61012eef | 3148 | if (startswith (own_buf, "vFile:") |
a6b151f1 DJ |
3149 | && handle_vFile (own_buf, packet_len, new_packet_len)) |
3150 | return; | |
3151 | ||
61012eef | 3152 | if (startswith (own_buf, "vAttach;")) |
2d717e4f | 3153 | { |
c12a5089 | 3154 | if ((!extended_protocol || !cs.multi_process) && target_running ()) |
2d717e4f | 3155 | { |
fd96d250 PA |
3156 | fprintf (stderr, "Already debugging a process\n"); |
3157 | write_enn (own_buf); | |
3158 | return; | |
2d717e4f | 3159 | } |
5b1c542e | 3160 | handle_v_attach (own_buf); |
2d717e4f DJ |
3161 | return; |
3162 | } | |
3163 | ||
61012eef | 3164 | if (startswith (own_buf, "vRun;")) |
2d717e4f | 3165 | { |
c12a5089 | 3166 | if ((!extended_protocol || !cs.multi_process) && target_running ()) |
2d717e4f | 3167 | { |
fd96d250 PA |
3168 | fprintf (stderr, "Already debugging a process\n"); |
3169 | write_enn (own_buf); | |
3170 | return; | |
2d717e4f | 3171 | } |
5b1c542e | 3172 | handle_v_run (own_buf); |
2d717e4f DJ |
3173 | return; |
3174 | } | |
3175 | ||
61012eef | 3176 | if (startswith (own_buf, "vKill;")) |
95954743 PA |
3177 | { |
3178 | if (!target_running ()) | |
3179 | { | |
3180 | fprintf (stderr, "No process to kill\n"); | |
3181 | write_enn (own_buf); | |
3182 | return; | |
3183 | } | |
3184 | handle_v_kill (own_buf); | |
3185 | return; | |
3186 | } | |
3187 | ||
14a00470 YQ |
3188 | if (handle_notif_ack (own_buf, packet_len)) |
3189 | return; | |
bd99dc85 | 3190 | |
64386c31 DJ |
3191 | /* Otherwise we didn't know what packet it was. Say we didn't |
3192 | understand it. */ | |
3193 | own_buf[0] = 0; | |
3194 | return; | |
3195 | } | |
3196 | ||
0bfdf32f | 3197 | /* Resume thread and wait for another event. In non-stop mode, |
bd99dc85 PA |
3198 | don't really wait here, but return immediatelly to the event |
3199 | loop. */ | |
1fd7cdc2 | 3200 | static void |
5b1c542e | 3201 | myresume (char *own_buf, int step, int sig) |
64386c31 | 3202 | { |
c12a5089 | 3203 | client_state &cs = get_client_state (); |
64386c31 DJ |
3204 | struct thread_resume resume_info[2]; |
3205 | int n = 0; | |
2bd7c093 | 3206 | int valid_cont_thread; |
a20d5e98 | 3207 | |
d7e15655 TT |
3208 | valid_cont_thread = (cs.cont_thread != null_ptid |
3209 | && cs.cont_thread != minus_one_ptid); | |
2bd7c093 PA |
3210 | |
3211 | if (step || sig || valid_cont_thread) | |
64386c31 | 3212 | { |
fbd5db48 | 3213 | resume_info[0].thread = current_ptid; |
bd99dc85 PA |
3214 | if (step) |
3215 | resume_info[0].kind = resume_step; | |
3216 | else | |
3217 | resume_info[0].kind = resume_continue; | |
64386c31 | 3218 | resume_info[0].sig = sig; |
64386c31 DJ |
3219 | n++; |
3220 | } | |
2bd7c093 PA |
3221 | |
3222 | if (!valid_cont_thread) | |
3223 | { | |
95954743 | 3224 | resume_info[n].thread = minus_one_ptid; |
bd99dc85 | 3225 | resume_info[n].kind = resume_continue; |
2bd7c093 PA |
3226 | resume_info[n].sig = 0; |
3227 | n++; | |
3228 | } | |
64386c31 | 3229 | |
b7ea362b | 3230 | resume (resume_info, n); |
bd99dc85 PA |
3231 | } |
3232 | ||
f0045347 | 3233 | /* Callback for for_each_thread. Make a new stop reply for each |
bd99dc85 PA |
3234 | stopped thread. */ |
3235 | ||
99078d34 SM |
3236 | static void |
3237 | queue_stop_reply_callback (thread_info *thread) | |
bd99dc85 | 3238 | { |
8336d594 PA |
3239 | /* For now, assume targets that don't have this callback also don't |
3240 | manage the thread's last_status field. */ | |
3241 | if (the_target->thread_stopped == NULL) | |
95954743 | 3242 | { |
8d749320 | 3243 | struct vstop_notif *new_notif = XNEW (struct vstop_notif); |
14a00470 | 3244 | |
9c80ecd6 | 3245 | new_notif->ptid = thread->id; |
14a00470 | 3246 | new_notif->status = thread->last_status; |
8336d594 PA |
3247 | /* Pass the last stop reply back to GDB, but don't notify |
3248 | yet. */ | |
14a00470 YQ |
3249 | notif_event_enque (¬if_stop, |
3250 | (struct notif_event *) new_notif); | |
8336d594 PA |
3251 | } |
3252 | else | |
3253 | { | |
3254 | if (thread_stopped (thread)) | |
3255 | { | |
3256 | if (debug_threads) | |
3360c0bf | 3257 | { |
23fdd69e | 3258 | std::string status_string |
3360c0bf LM |
3259 | = target_waitstatus_to_string (&thread->last_status); |
3260 | ||
87ce2a04 | 3261 | debug_printf ("Reporting thread %s as already stopped with %s\n", |
9c80ecd6 | 3262 | target_pid_to_str (thread->id), |
23fdd69e | 3263 | status_string.c_str ()); |
3360c0bf | 3264 | } |
8336d594 | 3265 | |
d20a8ad9 PA |
3266 | gdb_assert (thread->last_status.kind != TARGET_WAITKIND_IGNORE); |
3267 | ||
8336d594 PA |
3268 | /* Pass the last stop reply back to GDB, but don't notify |
3269 | yet. */ | |
9c80ecd6 | 3270 | queue_stop_reply (thread->id, &thread->last_status); |
8336d594 | 3271 | } |
95954743 | 3272 | } |
64386c31 DJ |
3273 | } |
3274 | ||
ce1a5b52 PA |
3275 | /* Set this inferior threads's state as "want-stopped". We won't |
3276 | resume this thread until the client gives us another action for | |
3277 | it. */ | |
8336d594 PA |
3278 | |
3279 | static void | |
9c80ecd6 | 3280 | gdb_wants_thread_stopped (thread_info *thread) |
8336d594 | 3281 | { |
8336d594 PA |
3282 | thread->last_resume_kind = resume_stop; |
3283 | ||
3284 | if (thread->last_status.kind == TARGET_WAITKIND_IGNORE) | |
3285 | { | |
ce1a5b52 PA |
3286 | /* Most threads are stopped implicitly (all-stop); tag that with |
3287 | signal 0. */ | |
8336d594 | 3288 | thread->last_status.kind = TARGET_WAITKIND_STOPPED; |
a493e3e2 | 3289 | thread->last_status.value.sig = GDB_SIGNAL_0; |
8336d594 PA |
3290 | } |
3291 | } | |
3292 | ||
3293 | /* Set all threads' states as "want-stopped". */ | |
3294 | ||
3295 | static void | |
3296 | gdb_wants_all_threads_stopped (void) | |
3297 | { | |
f0045347 | 3298 | for_each_thread (gdb_wants_thread_stopped); |
8336d594 PA |
3299 | } |
3300 | ||
f0045347 | 3301 | /* Callback for for_each_thread. If the thread is stopped with an |
b7ea362b PA |
3302 | interesting event, mark it as having a pending event. */ |
3303 | ||
3304 | static void | |
9c80ecd6 | 3305 | set_pending_status_callback (thread_info *thread) |
b7ea362b | 3306 | { |
b7ea362b PA |
3307 | if (thread->last_status.kind != TARGET_WAITKIND_STOPPED |
3308 | || (thread->last_status.value.sig != GDB_SIGNAL_0 | |
3309 | /* A breakpoint, watchpoint or finished step from a previous | |
3310 | GDB run isn't considered interesting for a new GDB run. | |
3311 | If we left those pending, the new GDB could consider them | |
3312 | random SIGTRAPs. This leaves out real async traps. We'd | |
3313 | have to peek into the (target-specific) siginfo to | |
3314 | distinguish those. */ | |
3315 | && thread->last_status.value.sig != GDB_SIGNAL_TRAP)) | |
3316 | thread->status_pending_p = 1; | |
3317 | } | |
3318 | ||
5b1c542e PA |
3319 | /* Status handler for the '?' packet. */ |
3320 | ||
3321 | static void | |
3322 | handle_status (char *own_buf) | |
3323 | { | |
c12a5089 SC |
3324 | client_state &cs = get_client_state (); |
3325 | ||
8336d594 | 3326 | /* GDB is connected, don't forward events to the target anymore. */ |
9179355e SM |
3327 | for_each_process ([] (process_info *process) { |
3328 | process->gdb_detached = 0; | |
3329 | }); | |
bd99dc85 PA |
3330 | |
3331 | /* In non-stop mode, we must send a stop reply for each stopped | |
3332 | thread. In all-stop mode, just send one for the first stopped | |
3333 | thread we find. */ | |
3334 | ||
3335 | if (non_stop) | |
3336 | { | |
99078d34 | 3337 | for_each_thread (queue_stop_reply_callback); |
bd99dc85 PA |
3338 | |
3339 | /* The first is sent immediatly. OK is sent if there is no | |
3340 | stopped thread, which is the same handling of the vStopped | |
3341 | packet (by design). */ | |
c12a5089 | 3342 | notif_write_event (¬if_stop, cs.own_buf); |
bd99dc85 | 3343 | } |
5b1c542e | 3344 | else |
bd99dc85 | 3345 | { |
9c80ecd6 | 3346 | thread_info *thread = NULL; |
b7ea362b | 3347 | |
7984d532 | 3348 | pause_all (0); |
fa593d66 | 3349 | stabilize_threads (); |
8336d594 PA |
3350 | gdb_wants_all_threads_stopped (); |
3351 | ||
b7ea362b PA |
3352 | /* We can only report one status, but we might be coming out of |
3353 | non-stop -- if more than one thread is stopped with | |
3354 | interesting events, leave events for the threads we're not | |
3355 | reporting now pending. They'll be reported the next time the | |
3356 | threads are resumed. Start by marking all interesting events | |
3357 | as pending. */ | |
f0045347 | 3358 | for_each_thread (set_pending_status_callback); |
b7ea362b PA |
3359 | |
3360 | /* Prefer the last thread that reported an event to GDB (even if | |
3361 | that was a GDB_SIGNAL_TRAP). */ | |
c12a5089 SC |
3362 | if (cs.last_status.kind != TARGET_WAITKIND_IGNORE |
3363 | && cs.last_status.kind != TARGET_WAITKIND_EXITED | |
3364 | && cs.last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
3365 | thread = find_thread_ptid (cs.last_ptid); | |
b7ea362b PA |
3366 | |
3367 | /* If the last event thread is not found for some reason, look | |
3368 | for some other thread that might have an event to report. */ | |
3369 | if (thread == NULL) | |
99078d34 SM |
3370 | thread = find_thread ([] (thread_info *thread) |
3371 | { | |
3372 | return thread->status_pending_p; | |
3373 | }); | |
b7ea362b PA |
3374 | |
3375 | /* If we're still out of luck, simply pick the first thread in | |
3376 | the thread list. */ | |
3377 | if (thread == NULL) | |
9c80ecd6 | 3378 | thread = get_first_thread (); |
b7ea362b PA |
3379 | |
3380 | if (thread != NULL) | |
8336d594 | 3381 | { |
b7ea362b PA |
3382 | struct thread_info *tp = (struct thread_info *) thread; |
3383 | ||
3384 | /* We're reporting this event, so it's no longer | |
3385 | pending. */ | |
3386 | tp->status_pending_p = 0; | |
3387 | ||
3388 | /* GDB assumes the current thread is the thread we're | |
3389 | reporting the status for. */ | |
c12a5089 | 3390 | cs.general_thread = thread->id; |
f557a88a | 3391 | set_desired_thread (); |
8336d594 | 3392 | |
b7ea362b | 3393 | gdb_assert (tp->last_status.kind != TARGET_WAITKIND_IGNORE); |
9c80ecd6 | 3394 | prepare_resume_reply (own_buf, tp->id, &tp->last_status); |
8336d594 | 3395 | } |
bd99dc85 PA |
3396 | else |
3397 | strcpy (own_buf, "W00"); | |
3398 | } | |
5b1c542e PA |
3399 | } |
3400 | ||
dd24457d DJ |
3401 | static void |
3402 | gdbserver_version (void) | |
3403 | { | |
c16158bc | 3404 | printf ("GNU gdbserver %s%s\n" |
82e1e79a | 3405 | "Copyright (C) 2018 Free Software Foundation, Inc.\n" |
493e2a69 MS |
3406 | "gdbserver is free software, covered by the " |
3407 | "GNU General Public License.\n" | |
dd24457d | 3408 | "This gdbserver was configured as \"%s\"\n", |
c16158bc | 3409 | PKGVERSION, version, host_name); |
dd24457d DJ |
3410 | } |
3411 | ||
0bc68c49 | 3412 | static void |
c16158bc | 3413 | gdbserver_usage (FILE *stream) |
0bc68c49 | 3414 | { |
c16158bc JM |
3415 | fprintf (stream, "Usage:\tgdbserver [OPTIONS] COMM PROG [ARGS ...]\n" |
3416 | "\tgdbserver [OPTIONS] --attach COMM PID\n" | |
3417 | "\tgdbserver [OPTIONS] --multi COMM\n" | |
3418 | "\n" | |
41f98f02 PA |
3419 | "COMM may either be a tty device (for serial debugging),\n" |
3420 | "HOST:PORT to listen for a TCP connection, or '-' or 'stdio' to use \n" | |
3421 | "stdin/stdout of gdbserver.\n" | |
3422 | "PROG is the executable program. ARGS are arguments passed to inferior.\n" | |
3423 | "PID is the process ID to attach to, when --attach is specified.\n" | |
3424 | "\n" | |
3425 | "Operating modes:\n" | |
3426 | "\n" | |
3427 | " --attach Attach to running process PID.\n" | |
3428 | " --multi Start server without a specific program, and\n" | |
3429 | " only quit when explicitly commanded.\n" | |
3430 | " --once Exit after the first connection has closed.\n" | |
3431 | " --help Print this message and then exit.\n" | |
3432 | " --version Display version information and exit.\n" | |
3433 | "\n" | |
3434 | "Other options:\n" | |
3435 | "\n" | |
3436 | " --wrapper WRAPPER -- Run WRAPPER to start new programs.\n" | |
3437 | " --disable-randomization\n" | |
3438 | " Run PROG with address space randomization disabled.\n" | |
3439 | " --no-disable-randomization\n" | |
3440 | " Don't disable address space randomization when\n" | |
3441 | " starting PROG.\n" | |
aefd8b33 SDJ |
3442 | " --startup-with-shell\n" |
3443 | " Start PROG using a shell. I.e., execs a shell that\n" | |
3444 | " then execs PROG. (default)\n" | |
3445 | " --no-startup-with-shell\n" | |
3446 | " Exec PROG directly instead of using a shell.\n" | |
3447 | " Disables argument globbing and variable substitution\n" | |
3448 | " on UNIX-like systems.\n" | |
41f98f02 PA |
3449 | "\n" |
3450 | "Debug options:\n" | |
c16158bc | 3451 | "\n" |
62709adf | 3452 | " --debug Enable general debugging output.\n" |
87ce2a04 DE |
3453 | " --debug-format=opt1[,opt2,...]\n" |
3454 | " Specify extra content in debugging output.\n" | |
3455 | " Options:\n" | |
3456 | " all\n" | |
3457 | " none\n" | |
87ce2a04 | 3458 | " timestamp\n" |
62709adf | 3459 | " --remote-debug Enable remote protocol debugging output.\n" |
41f98f02 PA |
3460 | " --disable-packet=opt1[,opt2,...]\n" |
3461 | " Disable support for RSP packets or features.\n" | |
3462 | " Options:\n" | |
3463 | " vCont, Tthread, qC, qfThreadInfo and \n" | |
3464 | " threads (disable all threading packets).\n" | |
3465 | "\n" | |
3466 | "For more information, consult the GDB manual (available as on-line \n" | |
3467 | "info or a printed manual).\n"); | |
c16158bc JM |
3468 | if (REPORT_BUGS_TO[0] && stream == stdout) |
3469 | fprintf (stream, "Report bugs to \"%s\".\n", REPORT_BUGS_TO); | |
0bc68c49 DJ |
3470 | } |
3471 | ||
db42f210 PA |
3472 | static void |
3473 | gdbserver_show_disableable (FILE *stream) | |
3474 | { | |
3475 | fprintf (stream, "Disableable packets:\n" | |
3476 | " vCont \tAll vCont packets\n" | |
3477 | " qC \tQuerying the current thread\n" | |
3478 | " qfThreadInfo\tThread listing\n" | |
493e2a69 MS |
3479 | " Tthread \tPassing the thread specifier in the " |
3480 | "T stop reply packet\n" | |
db42f210 PA |
3481 | " threads \tAll of the above\n"); |
3482 | } | |
3483 | ||
95954743 | 3484 | static void |
9179355e | 3485 | kill_inferior_callback (process_info *process) |
95954743 | 3486 | { |
a780ef4f PA |
3487 | kill_inferior (process); |
3488 | discard_queued_stop_replies (ptid_t (process->pid)); | |
95954743 PA |
3489 | } |
3490 | ||
9f767825 DE |
3491 | /* Call this when exiting gdbserver with possible inferiors that need |
3492 | to be killed or detached from. */ | |
3493 | ||
3494 | static void | |
3495 | detach_or_kill_for_exit (void) | |
3496 | { | |
3497 | /* First print a list of the inferiors we will be killing/detaching. | |
3498 | This is to assist the user, for example, in case the inferior unexpectedly | |
3499 | dies after we exit: did we screw up or did the inferior exit on its own? | |
3500 | Having this info will save some head-scratching. */ | |
3501 | ||
3502 | if (have_started_inferiors_p ()) | |
3503 | { | |
3504 | fprintf (stderr, "Killing process(es):"); | |
9179355e SM |
3505 | |
3506 | for_each_process ([] (process_info *process) { | |
3507 | if (!process->attached) | |
3508 | fprintf (stderr, " %d", process->pid); | |
3509 | }); | |
3510 | ||
9f767825 DE |
3511 | fprintf (stderr, "\n"); |
3512 | } | |
3513 | if (have_attached_inferiors_p ()) | |
3514 | { | |
3515 | fprintf (stderr, "Detaching process(es):"); | |
9179355e SM |
3516 | |
3517 | for_each_process ([] (process_info *process) { | |
3518 | if (process->attached) | |
3519 | fprintf (stderr, " %d", process->pid); | |
3520 | }); | |
3521 | ||
9f767825 DE |
3522 | fprintf (stderr, "\n"); |
3523 | } | |
3524 | ||
3525 | /* Now we can kill or detach the inferiors. */ | |
9179355e SM |
3526 | for_each_process ([] (process_info *process) { |
3527 | int pid = process->pid; | |
3528 | ||
3529 | if (process->attached) | |
ef2ddb33 | 3530 | detach_inferior (process); |
9179355e | 3531 | else |
a780ef4f | 3532 | kill_inferior (process); |
9f767825 | 3533 | |
f2907e49 | 3534 | discard_queued_stop_replies (ptid_t (pid)); |
9179355e | 3535 | }); |
9f767825 DE |
3536 | } |
3537 | ||
860789c7 GB |
3538 | /* Value that will be passed to exit(3) when gdbserver exits. */ |
3539 | static int exit_code; | |
3540 | ||
3541 | /* Cleanup version of detach_or_kill_for_exit. */ | |
3542 | ||
3543 | static void | |
3544 | detach_or_kill_for_exit_cleanup (void *ignore) | |
3545 | { | |
860789c7 | 3546 | |
492d29ea | 3547 | TRY |
860789c7 GB |
3548 | { |
3549 | detach_or_kill_for_exit (); | |
3550 | } | |
3551 | ||
492d29ea | 3552 | CATCH (exception, RETURN_MASK_ALL) |
860789c7 GB |
3553 | { |
3554 | fflush (stdout); | |
3555 | fprintf (stderr, "Detach or kill failed: %s\n", exception.message); | |
3556 | exit_code = 1; | |
3557 | } | |
492d29ea | 3558 | END_CATCH |
860789c7 GB |
3559 | } |
3560 | ||
3561 | /* Main function. This is called by the real "main" function, | |
3562 | wrapped in a TRY_CATCH that handles any uncaught exceptions. */ | |
3563 | ||
3564 | static void ATTRIBUTE_NORETURN | |
3565 | captured_main (int argc, char *argv[]) | |
c906108c | 3566 | { |
0729219d DJ |
3567 | int bad_attach; |
3568 | int pid; | |
fb32b4f7 PA |
3569 | char *arg_end; |
3570 | const char *port = NULL; | |
2d717e4f | 3571 | char **next_arg = &argv[1]; |
89dc0afd JK |
3572 | volatile int multi_mode = 0; |
3573 | volatile int attach = 0; | |
2d717e4f | 3574 | int was_running; |
6d580b63 | 3575 | bool selftest = false; |
605fd3c6 | 3576 | #if GDB_SELF_TEST |
1526853e | 3577 | const char *selftest_filter = NULL; |
605fd3c6 | 3578 | #endif |
c906108c | 3579 | |
b4987c95 | 3580 | current_directory = getcwd (NULL, 0); |
c12a5089 SC |
3581 | client_state &cs = get_client_state (); |
3582 | ||
b4987c95 SDJ |
3583 | if (current_directory == NULL) |
3584 | { | |
81561546 | 3585 | error (_("Could not find current working directory: %s"), |
b4987c95 SDJ |
3586 | safe_strerror (errno)); |
3587 | } | |
3588 | ||
2d717e4f | 3589 | while (*next_arg != NULL && **next_arg == '-') |
dd24457d | 3590 | { |
2d717e4f DJ |
3591 | if (strcmp (*next_arg, "--version") == 0) |
3592 | { | |
3593 | gdbserver_version (); | |
3594 | exit (0); | |
3595 | } | |
3596 | else if (strcmp (*next_arg, "--help") == 0) | |
3597 | { | |
c16158bc | 3598 | gdbserver_usage (stdout); |
2d717e4f DJ |
3599 | exit (0); |
3600 | } | |
3601 | else if (strcmp (*next_arg, "--attach") == 0) | |
3602 | attach = 1; | |
3603 | else if (strcmp (*next_arg, "--multi") == 0) | |
3604 | multi_mode = 1; | |
ccd213ac DJ |
3605 | else if (strcmp (*next_arg, "--wrapper") == 0) |
3606 | { | |
7c5ded6a SDJ |
3607 | char **tmp; |
3608 | ||
ccd213ac DJ |
3609 | next_arg++; |
3610 | ||
7c5ded6a | 3611 | tmp = next_arg; |
ccd213ac | 3612 | while (*next_arg != NULL && strcmp (*next_arg, "--") != 0) |
7c5ded6a | 3613 | { |
2090129c SDJ |
3614 | wrapper_argv += *next_arg; |
3615 | wrapper_argv += ' '; | |
7c5ded6a SDJ |
3616 | next_arg++; |
3617 | } | |
ccd213ac | 3618 | |
2090129c SDJ |
3619 | if (!wrapper_argv.empty ()) |
3620 | { | |
3621 | /* Erase the last whitespace. */ | |
3622 | wrapper_argv.erase (wrapper_argv.end () - 1); | |
3623 | } | |
3624 | ||
7c5ded6a | 3625 | if (next_arg == tmp || *next_arg == NULL) |
ccd213ac | 3626 | { |
c16158bc | 3627 | gdbserver_usage (stderr); |
ccd213ac DJ |
3628 | exit (1); |
3629 | } | |
3630 | ||
3631 | /* Consume the "--". */ | |
3632 | *next_arg = NULL; | |
3633 | } | |
2d717e4f DJ |
3634 | else if (strcmp (*next_arg, "--debug") == 0) |
3635 | debug_threads = 1; | |
61012eef | 3636 | else if (startswith (*next_arg, "--debug-format=")) |
87ce2a04 | 3637 | { |
2cc05030 | 3638 | std::string error_msg |
87ce2a04 DE |
3639 | = parse_debug_format_options ((*next_arg) |
3640 | + sizeof ("--debug-format=") - 1, 0); | |
3641 | ||
2cc05030 | 3642 | if (!error_msg.empty ()) |
87ce2a04 | 3643 | { |
2cc05030 | 3644 | fprintf (stderr, "%s", error_msg.c_str ()); |
87ce2a04 DE |
3645 | exit (1); |
3646 | } | |
3647 | } | |
62709adf PA |
3648 | else if (strcmp (*next_arg, "--remote-debug") == 0) |
3649 | remote_debug = 1; | |
db42f210 PA |
3650 | else if (strcmp (*next_arg, "--disable-packet") == 0) |
3651 | { | |
3652 | gdbserver_show_disableable (stdout); | |
3653 | exit (0); | |
3654 | } | |
61012eef | 3655 | else if (startswith (*next_arg, "--disable-packet=")) |
db42f210 PA |
3656 | { |
3657 | char *packets, *tok; | |
3658 | ||
3659 | packets = *next_arg += sizeof ("--disable-packet=") - 1; | |
3660 | for (tok = strtok (packets, ","); | |
3661 | tok != NULL; | |
3662 | tok = strtok (NULL, ",")) | |
3663 | { | |
3664 | if (strcmp ("vCont", tok) == 0) | |
3665 | disable_packet_vCont = 1; | |
3666 | else if (strcmp ("Tthread", tok) == 0) | |
3667 | disable_packet_Tthread = 1; | |
3668 | else if (strcmp ("qC", tok) == 0) | |
3669 | disable_packet_qC = 1; | |
3670 | else if (strcmp ("qfThreadInfo", tok) == 0) | |
3671 | disable_packet_qfThreadInfo = 1; | |
3672 | else if (strcmp ("threads", tok) == 0) | |
3673 | { | |
3674 | disable_packet_vCont = 1; | |
3675 | disable_packet_Tthread = 1; | |
3676 | disable_packet_qC = 1; | |
3677 | disable_packet_qfThreadInfo = 1; | |
3678 | } | |
3679 | else | |
3680 | { | |
3681 | fprintf (stderr, "Don't know how to disable \"%s\".\n\n", | |
3682 | tok); | |
3683 | gdbserver_show_disableable (stderr); | |
3684 | exit (1); | |
3685 | } | |
3686 | } | |
3687 | } | |
e0f9f062 DE |
3688 | else if (strcmp (*next_arg, "-") == 0) |
3689 | { | |
3690 | /* "-" specifies a stdio connection and is a form of port | |
3691 | specification. */ | |
fb32b4f7 PA |
3692 | port = STDIO_CONNECTION_NAME; |
3693 | next_arg++; | |
e0f9f062 DE |
3694 | break; |
3695 | } | |
03583c20 | 3696 | else if (strcmp (*next_arg, "--disable-randomization") == 0) |
c12a5089 | 3697 | cs.disable_randomization = 1; |
03583c20 | 3698 | else if (strcmp (*next_arg, "--no-disable-randomization") == 0) |
c12a5089 | 3699 | cs.disable_randomization = 0; |
aefd8b33 SDJ |
3700 | else if (strcmp (*next_arg, "--startup-with-shell") == 0) |
3701 | startup_with_shell = true; | |
3702 | else if (strcmp (*next_arg, "--no-startup-with-shell") == 0) | |
3703 | startup_with_shell = false; | |
03f2bd59 JK |
3704 | else if (strcmp (*next_arg, "--once") == 0) |
3705 | run_once = 1; | |
6d580b63 YQ |
3706 | else if (strcmp (*next_arg, "--selftest") == 0) |
3707 | selftest = true; | |
1526853e SM |
3708 | else if (startswith (*next_arg, "--selftest=")) |
3709 | { | |
3710 | selftest = true; | |
605fd3c6 | 3711 | #if GDB_SELF_TEST |
1526853e | 3712 | selftest_filter = *next_arg + strlen ("--selftest="); |
605fd3c6 | 3713 | #endif |
1526853e | 3714 | } |
2d717e4f DJ |
3715 | else |
3716 | { | |
3717 | fprintf (stderr, "Unknown argument: %s\n", *next_arg); | |
3718 | exit (1); | |
3719 | } | |
dd24457d | 3720 | |
2d717e4f DJ |
3721 | next_arg++; |
3722 | continue; | |
dd24457d DJ |
3723 | } |
3724 | ||
fb32b4f7 PA |
3725 | if (port == NULL) |
3726 | { | |
3727 | port = *next_arg; | |
3728 | next_arg++; | |
3729 | } | |
6d580b63 YQ |
3730 | if ((port == NULL || (!attach && !multi_mode && *next_arg == NULL)) |
3731 | && !selftest) | |
2d717e4f | 3732 | { |
c16158bc | 3733 | gdbserver_usage (stderr); |
2d717e4f DJ |
3734 | exit (1); |
3735 | } | |
3736 | ||
602e3198 JK |
3737 | /* Remember stdio descriptors. LISTEN_DESC must not be listed, it will be |
3738 | opened by remote_prepare. */ | |
3739 | notice_open_fds (); | |
3740 | ||
e379cee6 | 3741 | save_original_signals_state (false); |
f348d89a | 3742 | |
e0f9f062 DE |
3743 | /* We need to know whether the remote connection is stdio before |
3744 | starting the inferior. Inferiors created in this scenario have | |
3745 | stdin,stdout redirected. So do this here before we call | |
3746 | start_inferior. */ | |
6d580b63 YQ |
3747 | if (port != NULL) |
3748 | remote_prepare (port); | |
e0f9f062 | 3749 | |
0729219d DJ |
3750 | bad_attach = 0; |
3751 | pid = 0; | |
2d717e4f DJ |
3752 | |
3753 | /* --attach used to come after PORT, so allow it there for | |
3754 | compatibility. */ | |
3755 | if (*next_arg != NULL && strcmp (*next_arg, "--attach") == 0) | |
45b7b345 | 3756 | { |
2d717e4f DJ |
3757 | attach = 1; |
3758 | next_arg++; | |
45b7b345 DJ |
3759 | } |
3760 | ||
2d717e4f DJ |
3761 | if (attach |
3762 | && (*next_arg == NULL | |
3763 | || (*next_arg)[0] == '\0' | |
3764 | || (pid = strtoul (*next_arg, &arg_end, 0)) == 0 | |
3765 | || *arg_end != '\0' | |
3766 | || next_arg[1] != NULL)) | |
3767 | bad_attach = 1; | |
3768 | ||
3769 | if (bad_attach) | |
dd24457d | 3770 | { |
c16158bc | 3771 | gdbserver_usage (stderr); |
dd24457d DJ |
3772 | exit (1); |
3773 | } | |
c906108c | 3774 | |
2090129c | 3775 | /* Gather information about the environment. */ |
9a6c7d9c | 3776 | our_environ = gdb_environ::from_host_environ (); |
2090129c | 3777 | |
a20d5e98 | 3778 | initialize_async_io (); |
4ce44c66 | 3779 | initialize_low (); |
2090129c | 3780 | have_job_control (); |
60f662b0 | 3781 | initialize_event_loop (); |
219f2f23 PA |
3782 | if (target_supports_tracepoints ()) |
3783 | initialize_tracepoint (); | |
465a859e | 3784 | initialize_notif (); |
4ce44c66 | 3785 | |
224c3ddb | 3786 | mem_buf = (unsigned char *) xmalloc (PBUFSIZ); |
0a30fbc4 | 3787 | |
6d580b63 YQ |
3788 | if (selftest) |
3789 | { | |
605fd3c6 | 3790 | #if GDB_SELF_TEST |
1526853e | 3791 | selftests::run_tests (selftest_filter); |
605fd3c6 YQ |
3792 | #else |
3793 | printf (_("Selftests are not available in a non-development build.\n")); | |
3794 | #endif | |
6d580b63 YQ |
3795 | throw_quit ("Quit"); |
3796 | } | |
3797 | ||
2d717e4f | 3798 | if (pid == 0 && *next_arg != NULL) |
45b7b345 | 3799 | { |
2d717e4f DJ |
3800 | int i, n; |
3801 | ||
3802 | n = argc - (next_arg - argv); | |
25e3c82c | 3803 | program_path.set (gdb::unique_xmalloc_ptr<char> (xstrdup (next_arg[0]))); |
2090129c SDJ |
3804 | for (i = 1; i < n; i++) |
3805 | program_args.push_back (xstrdup (next_arg[i])); | |
3806 | program_args.push_back (NULL); | |
2d717e4f | 3807 | |
45b7b345 | 3808 | /* Wait till we are at first instruction in program. */ |
25e3c82c | 3809 | create_inferior (program_path.get (), program_args); |
c906108c | 3810 | |
c588c53c MS |
3811 | /* We are now (hopefully) stopped at the first instruction of |
3812 | the target process. This assumes that the target process was | |
3813 | successfully created. */ | |
45b7b345 | 3814 | } |
2d717e4f DJ |
3815 | else if (pid != 0) |
3816 | { | |
5b1c542e | 3817 | if (attach_inferior (pid) == -1) |
2d717e4f DJ |
3818 | error ("Attaching not supported on this target"); |
3819 | ||
3820 | /* Otherwise succeeded. */ | |
3821 | } | |
45b7b345 DJ |
3822 | else |
3823 | { | |
c12a5089 SC |
3824 | cs.last_status.kind = TARGET_WAITKIND_EXITED; |
3825 | cs.last_status.value.integer = 0; | |
3826 | cs.last_ptid = minus_one_ptid; | |
45b7b345 | 3827 | } |
860789c7 | 3828 | make_cleanup (detach_or_kill_for_exit_cleanup, NULL); |
c906108c | 3829 | |
311de423 PA |
3830 | /* Don't report shared library events on the initial connection, |
3831 | even if some libraries are preloaded. Avoids the "stopped by | |
3832 | shared library event" notice on gdb side. */ | |
3833 | dlls_changed = 0; | |
3834 | ||
c12a5089 SC |
3835 | if (cs.last_status.kind == TARGET_WAITKIND_EXITED |
3836 | || cs.last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2d717e4f DJ |
3837 | was_running = 0; |
3838 | else | |
3839 | was_running = 1; | |
3840 | ||
3841 | if (!was_running && !multi_mode) | |
860789c7 | 3842 | error ("No program to debug"); |
c588c53c | 3843 | |
c906108c SS |
3844 | while (1) |
3845 | { | |
c12a5089 SC |
3846 | cs.noack_mode = 0; |
3847 | cs.multi_process = 0; | |
3848 | cs.report_fork_events = 0; | |
3849 | cs.report_vfork_events = 0; | |
3850 | cs.report_exec_events = 0; | |
8336d594 | 3851 | /* Be sure we're out of tfind mode. */ |
c12a5089 SC |
3852 | cs.current_traceframe = -1; |
3853 | cs.cont_thread = null_ptid; | |
3854 | cs.swbreak_feature = 0; | |
3855 | cs.hwbreak_feature = 0; | |
3856 | cs.vCont_supported = 0; | |
bd99dc85 | 3857 | |
2d717e4f | 3858 | remote_open (port); |
c906108c | 3859 | |
492d29ea | 3860 | TRY |
2d717e4f | 3861 | { |
860789c7 GB |
3862 | /* Wait for events. This will return when all event sources |
3863 | are removed from the event loop. */ | |
3864 | start_event_loop (); | |
2d717e4f | 3865 | |
860789c7 | 3866 | /* If an exit was requested (using the "monitor exit" |
fddedbe6 PA |
3867 | command), terminate now. */ |
3868 | if (exit_requested) | |
3869 | throw_quit ("Quit"); | |
3870 | ||
3871 | /* The only other way to get here is for getpkt to fail: | |
3872 | ||
3873 | - If --once was specified, we're done. | |
bd99dc85 | 3874 | |
fddedbe6 PA |
3875 | - If not in extended-remote mode, and we're no longer |
3876 | debugging anything, simply exit: GDB has disconnected | |
3877 | after processing the last process exit. | |
3878 | ||
3879 | - Otherwise, close the connection and reopen it at the | |
3880 | top of the loop. */ | |
3881 | if (run_once || (!extended_protocol && !target_running ())) | |
860789c7 | 3882 | throw_quit ("Quit"); |
bd99dc85 | 3883 | |
860789c7 GB |
3884 | fprintf (stderr, |
3885 | "Remote side has terminated connection. " | |
3886 | "GDBserver will reopen the connection.\n"); | |
8336d594 | 3887 | |
860789c7 GB |
3888 | /* Get rid of any pending statuses. An eventual reconnection |
3889 | (by the same GDB instance or another) will refresh all its | |
3890 | state from scratch. */ | |
465a859e | 3891 | discard_queued_stop_replies (minus_one_ptid); |
f0045347 SM |
3892 | for_each_thread ([] (thread_info *thread) |
3893 | { | |
3894 | thread->status_pending_p = 0; | |
3895 | }); | |
9939e131 | 3896 | |
860789c7 | 3897 | if (tracing) |
8336d594 | 3898 | { |
860789c7 | 3899 | if (disconnected_tracing) |
8336d594 | 3900 | { |
860789c7 GB |
3901 | /* Try to enable non-stop/async mode, so we we can |
3902 | both wait for an async socket accept, and handle | |
3903 | async target events simultaneously. There's also | |
3904 | no point either in having the target always stop | |
3905 | all threads, when we're going to pass signals | |
3906 | down without informing GDB. */ | |
3907 | if (!non_stop) | |
3908 | { | |
3909 | if (start_non_stop (1)) | |
3910 | non_stop = 1; | |
3911 | ||
3912 | /* Detaching implicitly resumes all threads; | |
3913 | simply disconnecting does not. */ | |
3914 | } | |
3915 | } | |
3916 | else | |
3917 | { | |
3918 | fprintf (stderr, | |
3919 | "Disconnected tracing disabled; " | |
3920 | "stopping trace run.\n"); | |
3921 | stop_tracing (); | |
8336d594 PA |
3922 | } |
3923 | } | |
860789c7 | 3924 | } |
492d29ea | 3925 | CATCH (exception, RETURN_MASK_ERROR) |
860789c7 | 3926 | { |
608a1e46 PA |
3927 | fflush (stdout); |
3928 | fprintf (stderr, "gdbserver: %s\n", exception.message); | |
3929 | ||
860789c7 | 3930 | if (response_needed) |
8336d594 | 3931 | { |
c12a5089 SC |
3932 | write_enn (cs.own_buf); |
3933 | putpkt (cs.own_buf); | |
8336d594 | 3934 | } |
608a1e46 PA |
3935 | |
3936 | if (run_once) | |
3937 | throw_quit ("Quit"); | |
8336d594 | 3938 | } |
492d29ea | 3939 | END_CATCH |
bd99dc85 PA |
3940 | } |
3941 | } | |
01f9e8fa | 3942 | |
860789c7 GB |
3943 | /* Main function. */ |
3944 | ||
3945 | int | |
3946 | main (int argc, char *argv[]) | |
3947 | { | |
860789c7 | 3948 | |
492d29ea | 3949 | TRY |
860789c7 GB |
3950 | { |
3951 | captured_main (argc, argv); | |
3952 | } | |
492d29ea | 3953 | CATCH (exception, RETURN_MASK_ALL) |
860789c7 | 3954 | { |
492d29ea PA |
3955 | if (exception.reason == RETURN_ERROR) |
3956 | { | |
3957 | fflush (stdout); | |
3958 | fprintf (stderr, "%s\n", exception.message); | |
3959 | fprintf (stderr, "Exiting\n"); | |
3960 | exit_code = 1; | |
3961 | } | |
3962 | ||
3963 | exit (exit_code); | |
860789c7 | 3964 | } |
492d29ea | 3965 | END_CATCH |
860789c7 | 3966 | |
492d29ea | 3967 | gdb_assert_not_reached ("captured_main should never return"); |
860789c7 GB |
3968 | } |
3969 | ||
802e8e6d PA |
3970 | /* Process options coming from Z packets for a breakpoint. PACKET is |
3971 | the packet buffer. *PACKET is updated to point to the first char | |
3972 | after the last processed option. */ | |
9f3a5c85 LM |
3973 | |
3974 | static void | |
256642e8 | 3975 | process_point_options (struct gdb_breakpoint *bp, const char **packet) |
9f3a5c85 | 3976 | { |
256642e8 | 3977 | const char *dataptr = *packet; |
d3ce09f5 | 3978 | int persist; |
9f3a5c85 LM |
3979 | |
3980 | /* Check if data has the correct format. */ | |
3981 | if (*dataptr != ';') | |
3982 | return; | |
3983 | ||
3984 | dataptr++; | |
3985 | ||
3986 | while (*dataptr) | |
3987 | { | |
d3ce09f5 SS |
3988 | if (*dataptr == ';') |
3989 | ++dataptr; | |
3990 | ||
3991 | if (*dataptr == 'X') | |
9f3a5c85 | 3992 | { |
d3ce09f5 | 3993 | /* Conditional expression. */ |
d171ca78 | 3994 | if (debug_threads) |
87ce2a04 | 3995 | debug_printf ("Found breakpoint condition.\n"); |
802e8e6d | 3996 | if (!add_breakpoint_condition (bp, &dataptr)) |
8424cc97 | 3997 | dataptr = strchrnul (dataptr, ';'); |
d3ce09f5 | 3998 | } |
61012eef | 3999 | else if (startswith (dataptr, "cmds:")) |
d3ce09f5 SS |
4000 | { |
4001 | dataptr += strlen ("cmds:"); | |
4002 | if (debug_threads) | |
87ce2a04 | 4003 | debug_printf ("Found breakpoint commands %s.\n", dataptr); |
d3ce09f5 SS |
4004 | persist = (*dataptr == '1'); |
4005 | dataptr += 2; | |
802e8e6d | 4006 | if (add_breakpoint_commands (bp, &dataptr, persist)) |
8424cc97 | 4007 | dataptr = strchrnul (dataptr, ';'); |
d3ce09f5 SS |
4008 | } |
4009 | else | |
4010 | { | |
d3ce09f5 SS |
4011 | fprintf (stderr, "Unknown token %c, ignoring.\n", |
4012 | *dataptr); | |
78a99e91 | 4013 | /* Skip tokens until we find one that we recognize. */ |
8424cc97 | 4014 | dataptr = strchrnul (dataptr, ';'); |
9f3a5c85 | 4015 | } |
9f3a5c85 LM |
4016 | } |
4017 | *packet = dataptr; | |
4018 | } | |
4019 | ||
bd99dc85 PA |
4020 | /* Event loop callback that handles a serial event. The first byte in |
4021 | the serial buffer gets us here. We expect characters to arrive at | |
4022 | a brisk pace, so we read the rest of the packet with a blocking | |
4023 | getpkt call. */ | |
01f9e8fa | 4024 | |
8336d594 | 4025 | static int |
bd99dc85 PA |
4026 | process_serial_event (void) |
4027 | { | |
c12a5089 | 4028 | client_state &cs = get_client_state (); |
bd99dc85 PA |
4029 | int signal; |
4030 | unsigned int len; | |
764880b7 | 4031 | int res; |
bd99dc85 PA |
4032 | CORE_ADDR mem_addr; |
4033 | unsigned char sig; | |
4034 | int packet_len; | |
4035 | int new_packet_len = -1; | |
4036 | ||
bd99dc85 PA |
4037 | disable_async_io (); |
4038 | ||
4039 | response_needed = 0; | |
c12a5089 | 4040 | packet_len = getpkt (cs.own_buf); |
bd99dc85 PA |
4041 | if (packet_len <= 0) |
4042 | { | |
bd99dc85 | 4043 | remote_close (); |
8336d594 PA |
4044 | /* Force an event loop break. */ |
4045 | return -1; | |
bd99dc85 PA |
4046 | } |
4047 | response_needed = 1; | |
4048 | ||
c12a5089 | 4049 | char ch = cs.own_buf[0]; |
bd99dc85 PA |
4050 | switch (ch) |
4051 | { | |
4052 | case 'q': | |
c12a5089 | 4053 | handle_query (cs.own_buf, packet_len, &new_packet_len); |
bd99dc85 PA |
4054 | break; |
4055 | case 'Q': | |
c12a5089 | 4056 | handle_general_set (cs.own_buf); |
bd99dc85 PA |
4057 | break; |
4058 | case 'D': | |
c12a5089 | 4059 | handle_detach (cs.own_buf); |
bd99dc85 PA |
4060 | break; |
4061 | case '!': | |
4062 | extended_protocol = 1; | |
c12a5089 | 4063 | write_ok (cs.own_buf); |
bd99dc85 PA |
4064 | break; |
4065 | case '?': | |
c12a5089 | 4066 | handle_status (cs.own_buf); |
bd99dc85 PA |
4067 | break; |
4068 | case 'H': | |
c12a5089 | 4069 | if (cs.own_buf[1] == 'c' || cs.own_buf[1] == 'g' || cs.own_buf[1] == 's') |
bd99dc85 | 4070 | { |
c12a5089 | 4071 | require_running_or_break (cs.own_buf); |
95954743 | 4072 | |
c12a5089 | 4073 | ptid_t thread_id = read_ptid (&cs.own_buf[2], NULL); |
95954743 | 4074 | |
96cde54f | 4075 | if (thread_id == null_ptid || thread_id == minus_one_ptid) |
95954743 | 4076 | thread_id = null_ptid; |
96cde54f | 4077 | else if (thread_id.is_pid ()) |
95954743 | 4078 | { |
96cde54f SM |
4079 | /* The ptid represents a pid. */ |
4080 | thread_info *thread = find_any_thread_of_pid (thread_id.pid ()); | |
785922a5 SM |
4081 | |
4082 | if (thread == NULL) | |
95954743 | 4083 | { |
c12a5089 | 4084 | write_enn (cs.own_buf); |
95954743 PA |
4085 | break; |
4086 | } | |
4087 | ||
9c80ecd6 | 4088 | thread_id = thread->id; |
95954743 | 4089 | } |
bd99dc85 PA |
4090 | else |
4091 | { | |
96cde54f SM |
4092 | /* The ptid represents a lwp/tid. */ |
4093 | if (find_thread_ptid (thread_id) == NULL) | |
c906108c | 4094 | { |
c12a5089 | 4095 | write_enn (cs.own_buf); |
c906108c SS |
4096 | break; |
4097 | } | |
c906108c SS |
4098 | } |
4099 | ||
c12a5089 | 4100 | if (cs.own_buf[1] == 'g') |
c906108c | 4101 | { |
d7e15655 | 4102 | if (thread_id == null_ptid) |
c906108c | 4103 | { |
bd99dc85 PA |
4104 | /* GDB is telling us to choose any thread. Check if |
4105 | the currently selected thread is still valid. If | |
4106 | it is not, select the first available. */ | |
c12a5089 | 4107 | thread_info *thread = find_thread_ptid (cs.general_thread); |
bd99dc85 | 4108 | if (thread == NULL) |
f0db101d | 4109 | thread = get_first_thread (); |
9c80ecd6 | 4110 | thread_id = thread->id; |
c906108c | 4111 | } |
bd99dc85 | 4112 | |
c12a5089 | 4113 | cs.general_thread = thread_id; |
f557a88a | 4114 | set_desired_thread (); |
f0db101d | 4115 | gdb_assert (current_thread != NULL); |
c906108c | 4116 | } |
c12a5089 SC |
4117 | else if (cs.own_buf[1] == 'c') |
4118 | cs.cont_thread = thread_id; | |
c906108c | 4119 | |
c12a5089 | 4120 | write_ok (cs.own_buf); |
bd99dc85 PA |
4121 | } |
4122 | else | |
4123 | { | |
4124 | /* Silently ignore it so that gdb can extend the protocol | |
4125 | without compatibility headaches. */ | |
c12a5089 | 4126 | cs.own_buf[0] = '\0'; |
2d717e4f | 4127 | } |
bd99dc85 PA |
4128 | break; |
4129 | case 'g': | |
c12a5089 SC |
4130 | require_running_or_break (cs.own_buf); |
4131 | if (cs.current_traceframe >= 0) | |
219f2f23 | 4132 | { |
3aee8918 PA |
4133 | struct regcache *regcache |
4134 | = new_register_cache (current_target_desc ()); | |
219f2f23 | 4135 | |
c12a5089 | 4136 | if (fetch_traceframe_registers (cs.current_traceframe, |
219f2f23 | 4137 | regcache, -1) == 0) |
c12a5089 | 4138 | registers_to_string (regcache, cs.own_buf); |
219f2f23 | 4139 | else |
c12a5089 | 4140 | write_enn (cs.own_buf); |
219f2f23 PA |
4141 | free_register_cache (regcache); |
4142 | } | |
4143 | else | |
4144 | { | |
4145 | struct regcache *regcache; | |
4146 | ||
f557a88a | 4147 | if (!set_desired_thread ()) |
c12a5089 | 4148 | write_enn (cs.own_buf); |
f0db101d PA |
4149 | else |
4150 | { | |
4151 | regcache = get_thread_regcache (current_thread, 1); | |
c12a5089 | 4152 | registers_to_string (regcache, cs.own_buf); |
f0db101d | 4153 | } |
219f2f23 | 4154 | } |
bd99dc85 PA |
4155 | break; |
4156 | case 'G': | |
c12a5089 SC |
4157 | require_running_or_break (cs.own_buf); |
4158 | if (cs.current_traceframe >= 0) | |
4159 | write_enn (cs.own_buf); | |
219f2f23 PA |
4160 | else |
4161 | { | |
442ea881 PA |
4162 | struct regcache *regcache; |
4163 | ||
f557a88a | 4164 | if (!set_desired_thread ()) |
c12a5089 | 4165 | write_enn (cs.own_buf); |
f0db101d PA |
4166 | else |
4167 | { | |
4168 | regcache = get_thread_regcache (current_thread, 1); | |
c12a5089 SC |
4169 | registers_from_string (regcache, &cs.own_buf[1]); |
4170 | write_ok (cs.own_buf); | |
f0db101d | 4171 | } |
442ea881 | 4172 | } |
bd99dc85 PA |
4173 | break; |
4174 | case 'm': | |
c12a5089 SC |
4175 | require_running_or_break (cs.own_buf); |
4176 | decode_m_packet (&cs.own_buf[1], &mem_addr, &len); | |
764880b7 PA |
4177 | res = gdb_read_memory (mem_addr, mem_buf, len); |
4178 | if (res < 0) | |
c12a5089 | 4179 | write_enn (cs.own_buf); |
764880b7 | 4180 | else |
c12a5089 | 4181 | bin2hex (mem_buf, cs.own_buf, res); |
bd99dc85 PA |
4182 | break; |
4183 | case 'M': | |
c12a5089 SC |
4184 | require_running_or_break (cs.own_buf); |
4185 | decode_M_packet (&cs.own_buf[1], &mem_addr, &len, &mem_buf); | |
90d74c30 | 4186 | if (gdb_write_memory (mem_addr, mem_buf, len) == 0) |
c12a5089 | 4187 | write_ok (cs.own_buf); |
bd99dc85 | 4188 | else |
c12a5089 | 4189 | write_enn (cs.own_buf); |
bd99dc85 PA |
4190 | break; |
4191 | case 'X': | |
c12a5089 SC |
4192 | require_running_or_break (cs.own_buf); |
4193 | if (decode_X_packet (&cs.own_buf[1], packet_len - 1, | |
fa593d66 | 4194 | &mem_addr, &len, &mem_buf) < 0 |
90d74c30 | 4195 | || gdb_write_memory (mem_addr, mem_buf, len) != 0) |
c12a5089 | 4196 | write_enn (cs.own_buf); |
bd99dc85 | 4197 | else |
c12a5089 | 4198 | write_ok (cs.own_buf); |
bd99dc85 PA |
4199 | break; |
4200 | case 'C': | |
c12a5089 SC |
4201 | require_running_or_break (cs.own_buf); |
4202 | hex2bin (cs.own_buf + 1, &sig, 1); | |
e053fbc4 PA |
4203 | if (gdb_signal_to_host_p ((enum gdb_signal) sig)) |
4204 | signal = gdb_signal_to_host ((enum gdb_signal) sig); | |
bd99dc85 PA |
4205 | else |
4206 | signal = 0; | |
c12a5089 | 4207 | myresume (cs.own_buf, 0, signal); |
bd99dc85 PA |
4208 | break; |
4209 | case 'S': | |
c12a5089 SC |
4210 | require_running_or_break (cs.own_buf); |
4211 | hex2bin (cs.own_buf + 1, &sig, 1); | |
e053fbc4 PA |
4212 | if (gdb_signal_to_host_p ((enum gdb_signal) sig)) |
4213 | signal = gdb_signal_to_host ((enum gdb_signal) sig); | |
bd99dc85 PA |
4214 | else |
4215 | signal = 0; | |
c12a5089 | 4216 | myresume (cs.own_buf, 1, signal); |
bd99dc85 PA |
4217 | break; |
4218 | case 'c': | |
c12a5089 | 4219 | require_running_or_break (cs.own_buf); |
bd99dc85 | 4220 | signal = 0; |
c12a5089 | 4221 | myresume (cs.own_buf, 0, signal); |
bd99dc85 PA |
4222 | break; |
4223 | case 's': | |
c12a5089 | 4224 | require_running_or_break (cs.own_buf); |
bd99dc85 | 4225 | signal = 0; |
c12a5089 | 4226 | myresume (cs.own_buf, 1, signal); |
bd99dc85 | 4227 | break; |
c6314022 AR |
4228 | case 'Z': /* insert_ ... */ |
4229 | /* Fallthrough. */ | |
4230 | case 'z': /* remove_ ... */ | |
bd99dc85 | 4231 | { |
bd99dc85 | 4232 | char *dataptr; |
aca22551 | 4233 | ULONGEST addr; |
27165294 | 4234 | int kind; |
c12a5089 | 4235 | char type = cs.own_buf[1]; |
c6314022 | 4236 | int res; |
d993e290 | 4237 | const int insert = ch == 'Z'; |
c12a5089 | 4238 | const char *p = &cs.own_buf[3]; |
aca22551 PA |
4239 | |
4240 | p = unpack_varlen_hex (p, &addr); | |
27165294 | 4241 | kind = strtol (p + 1, &dataptr, 16); |
c6314022 | 4242 | |
802e8e6d | 4243 | if (insert) |
d993e290 | 4244 | { |
9aa76cd0 | 4245 | struct gdb_breakpoint *bp; |
802e8e6d | 4246 | |
27165294 | 4247 | bp = set_gdb_breakpoint (type, addr, kind, &res); |
802e8e6d | 4248 | if (bp != NULL) |
9f3a5c85 | 4249 | { |
802e8e6d PA |
4250 | res = 0; |
4251 | ||
4252 | /* GDB may have sent us a list of *point parameters to | |
4253 | be evaluated on the target's side. Read such list | |
4254 | here. If we already have a list of parameters, GDB | |
4255 | is telling us to drop that list and use this one | |
4256 | instead. */ | |
0a261ed8 | 4257 | clear_breakpoint_conditions_and_commands (bp); |
256642e8 PA |
4258 | const char *options = dataptr; |
4259 | process_point_options (bp, &options); | |
9f3a5c85 | 4260 | } |
d993e290 | 4261 | } |
802e8e6d | 4262 | else |
27165294 | 4263 | res = delete_gdb_breakpoint (type, addr, kind); |
bd99dc85 | 4264 | |
c6314022 | 4265 | if (res == 0) |
c12a5089 | 4266 | write_ok (cs.own_buf); |
c6314022 AR |
4267 | else if (res == 1) |
4268 | /* Unsupported. */ | |
c12a5089 | 4269 | cs.own_buf[0] = '\0'; |
bd99dc85 | 4270 | else |
c12a5089 | 4271 | write_enn (cs.own_buf); |
bd99dc85 PA |
4272 | break; |
4273 | } | |
4274 | case 'k': | |
4275 | response_needed = 0; | |
4276 | if (!target_running ()) | |
95954743 PA |
4277 | /* The packet we received doesn't make sense - but we can't |
4278 | reply to it, either. */ | |
8336d594 | 4279 | return 0; |
c906108c | 4280 | |
95954743 | 4281 | fprintf (stderr, "Killing all inferiors\n"); |
9179355e SM |
4282 | |
4283 | for_each_process (kill_inferior_callback); | |
c906108c | 4284 | |
bd99dc85 PA |
4285 | /* When using the extended protocol, we wait with no program |
4286 | running. The traditional protocol will exit instead. */ | |
4287 | if (extended_protocol) | |
4288 | { | |
c12a5089 SC |
4289 | cs.last_status.kind = TARGET_WAITKIND_EXITED; |
4290 | cs.last_status.value.sig = GDB_SIGNAL_KILL; | |
8336d594 | 4291 | return 0; |
bd99dc85 PA |
4292 | } |
4293 | else | |
8336d594 PA |
4294 | exit (0); |
4295 | ||
bd99dc85 PA |
4296 | case 'T': |
4297 | { | |
c12a5089 | 4298 | require_running_or_break (cs.own_buf); |
95954743 | 4299 | |
c12a5089 | 4300 | ptid_t thread_id = read_ptid (&cs.own_buf[1], NULL); |
96cde54f | 4301 | if (find_thread_ptid (thread_id) == NULL) |
bd99dc85 | 4302 | { |
c12a5089 | 4303 | write_enn (cs.own_buf); |
bd99dc85 PA |
4304 | break; |
4305 | } | |
4306 | ||
4307 | if (mythread_alive (thread_id)) | |
c12a5089 | 4308 | write_ok (cs.own_buf); |
bd99dc85 | 4309 | else |
c12a5089 | 4310 | write_enn (cs.own_buf); |
bd99dc85 PA |
4311 | } |
4312 | break; | |
4313 | case 'R': | |
4314 | response_needed = 0; | |
4315 | ||
4316 | /* Restarting the inferior is only supported in the extended | |
4317 | protocol. */ | |
4318 | if (extended_protocol) | |
4319 | { | |
4320 | if (target_running ()) | |
9179355e SM |
4321 | for_each_process (kill_inferior_callback); |
4322 | ||
bd99dc85 PA |
4323 | fprintf (stderr, "GDBserver restarting\n"); |
4324 | ||
4325 | /* Wait till we are at 1st instruction in prog. */ | |
25e3c82c | 4326 | if (program_path.get () != NULL) |
51aee833 | 4327 | { |
25e3c82c | 4328 | create_inferior (program_path.get (), program_args); |
2090129c | 4329 | |
c12a5089 | 4330 | if (cs.last_status.kind == TARGET_WAITKIND_STOPPED) |
51aee833 YQ |
4331 | { |
4332 | /* Stopped at the first instruction of the target | |
4333 | process. */ | |
c12a5089 | 4334 | cs.general_thread = cs.last_ptid; |
51aee833 YQ |
4335 | } |
4336 | else | |
4337 | { | |
4338 | /* Something went wrong. */ | |
c12a5089 | 4339 | cs.general_thread = null_ptid; |
51aee833 YQ |
4340 | } |
4341 | } | |
bd99dc85 PA |
4342 | else |
4343 | { | |
c12a5089 SC |
4344 | cs.last_status.kind = TARGET_WAITKIND_EXITED; |
4345 | cs.last_status.value.sig = GDB_SIGNAL_KILL; | |
bd99dc85 | 4346 | } |
8336d594 | 4347 | return 0; |
c906108c SS |
4348 | } |
4349 | else | |
4350 | { | |
bd99dc85 PA |
4351 | /* It is a request we don't understand. Respond with an |
4352 | empty packet so that gdb knows that we don't support this | |
4353 | request. */ | |
c12a5089 | 4354 | cs.own_buf[0] = '\0'; |
bd99dc85 PA |
4355 | break; |
4356 | } | |
4357 | case 'v': | |
4358 | /* Extended (long) request. */ | |
c12a5089 | 4359 | handle_v_requests (cs.own_buf, packet_len, &new_packet_len); |
bd99dc85 PA |
4360 | break; |
4361 | ||
4362 | default: | |
4363 | /* It is a request we don't understand. Respond with an empty | |
4364 | packet so that gdb knows that we don't support this | |
4365 | request. */ | |
c12a5089 | 4366 | cs.own_buf[0] = '\0'; |
bd99dc85 PA |
4367 | break; |
4368 | } | |
4369 | ||
4370 | if (new_packet_len != -1) | |
c12a5089 | 4371 | putpkt_binary (cs.own_buf, new_packet_len); |
bd99dc85 | 4372 | else |
c12a5089 | 4373 | putpkt (cs.own_buf); |
bd99dc85 PA |
4374 | |
4375 | response_needed = 0; | |
4376 | ||
8336d594 PA |
4377 | if (exit_requested) |
4378 | return -1; | |
4379 | ||
4380 | return 0; | |
c906108c | 4381 | } |
bd99dc85 PA |
4382 | |
4383 | /* Event-loop callback for serial events. */ | |
4384 | ||
8336d594 | 4385 | int |
bd99dc85 PA |
4386 | handle_serial_event (int err, gdb_client_data client_data) |
4387 | { | |
4388 | if (debug_threads) | |
87ce2a04 | 4389 | debug_printf ("handling possible serial event\n"); |
bd99dc85 PA |
4390 | |
4391 | /* Really handle it. */ | |
8336d594 PA |
4392 | if (process_serial_event () < 0) |
4393 | return -1; | |
bd99dc85 | 4394 | |
0bfdf32f | 4395 | /* Be sure to not change the selected thread behind GDB's back. |
bd99dc85 | 4396 | Important in the non-stop mode asynchronous protocol. */ |
f557a88a | 4397 | set_desired_thread (); |
8336d594 PA |
4398 | |
4399 | return 0; | |
bd99dc85 PA |
4400 | } |
4401 | ||
f2faf941 PA |
4402 | /* Push a stop notification on the notification queue. */ |
4403 | ||
4404 | static void | |
4405 | push_stop_notification (ptid_t ptid, struct target_waitstatus *status) | |
4406 | { | |
4407 | struct vstop_notif *vstop_notif = XNEW (struct vstop_notif); | |
4408 | ||
4409 | vstop_notif->status = *status; | |
4410 | vstop_notif->ptid = ptid; | |
4411 | /* Push Stop notification. */ | |
4412 | notif_push (¬if_stop, (struct notif_event *) vstop_notif); | |
4413 | } | |
4414 | ||
bd99dc85 PA |
4415 | /* Event-loop callback for target events. */ |
4416 | ||
8336d594 | 4417 | int |
bd99dc85 PA |
4418 | handle_target_event (int err, gdb_client_data client_data) |
4419 | { | |
c12a5089 | 4420 | client_state &cs = get_client_state (); |
bd99dc85 | 4421 | if (debug_threads) |
87ce2a04 | 4422 | debug_printf ("handling possible target event\n"); |
bd99dc85 | 4423 | |
c12a5089 | 4424 | cs.last_ptid = mywait (minus_one_ptid, &cs.last_status, |
95954743 | 4425 | TARGET_WNOHANG, 1); |
bd99dc85 | 4426 | |
c12a5089 | 4427 | if (cs.last_status.kind == TARGET_WAITKIND_NO_RESUMED) |
fa96cb38 | 4428 | { |
f2faf941 | 4429 | if (gdb_connected () && report_no_resumed) |
c12a5089 | 4430 | push_stop_notification (null_ptid, &cs.last_status); |
fa96cb38 | 4431 | } |
c12a5089 | 4432 | else if (cs.last_status.kind != TARGET_WAITKIND_IGNORE) |
bd99dc85 | 4433 | { |
e99b03dc | 4434 | int pid = cs.last_ptid.pid (); |
8336d594 PA |
4435 | struct process_info *process = find_process_pid (pid); |
4436 | int forward_event = !gdb_connected () || process->gdb_detached; | |
4437 | ||
c12a5089 SC |
4438 | if (cs.last_status.kind == TARGET_WAITKIND_EXITED |
4439 | || cs.last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
f9e39928 PA |
4440 | { |
4441 | mark_breakpoints_out (process); | |
c12a5089 | 4442 | target_mourn_inferior (cs.last_ptid); |
f9e39928 | 4443 | } |
c12a5089 | 4444 | else if (cs.last_status.kind == TARGET_WAITKIND_THREAD_EXITED) |
65706a29 | 4445 | ; |
ce1a5b52 | 4446 | else |
d20a8ad9 PA |
4447 | { |
4448 | /* We're reporting this thread as stopped. Update its | |
4449 | "want-stopped" state to what the client wants, until it | |
4450 | gets a new resume action. */ | |
0bfdf32f | 4451 | current_thread->last_resume_kind = resume_stop; |
c12a5089 | 4452 | current_thread->last_status = cs.last_status; |
d20a8ad9 | 4453 | } |
8336d594 PA |
4454 | |
4455 | if (forward_event) | |
4456 | { | |
4457 | if (!target_running ()) | |
4458 | { | |
4459 | /* The last process exited. We're done. */ | |
4460 | exit (0); | |
4461 | } | |
4462 | ||
c12a5089 SC |
4463 | if (cs.last_status.kind == TARGET_WAITKIND_EXITED |
4464 | || cs.last_status.kind == TARGET_WAITKIND_SIGNALLED | |
4465 | || cs.last_status.kind == TARGET_WAITKIND_THREAD_EXITED) | |
65706a29 PA |
4466 | ; |
4467 | else | |
8336d594 PA |
4468 | { |
4469 | /* A thread stopped with a signal, but gdb isn't | |
4470 | connected to handle it. Pass it down to the | |
4471 | inferior, as if it wasn't being traced. */ | |
049a8570 | 4472 | enum gdb_signal signal; |
8336d594 PA |
4473 | |
4474 | if (debug_threads) | |
87ce2a04 DE |
4475 | debug_printf ("GDB not connected; forwarding event %d for" |
4476 | " [%s]\n", | |
c12a5089 SC |
4477 | (int) cs.last_status.kind, |
4478 | target_pid_to_str (cs.last_ptid)); | |
8336d594 | 4479 | |
c12a5089 SC |
4480 | if (cs.last_status.kind == TARGET_WAITKIND_STOPPED) |
4481 | signal = cs.last_status.value.sig; | |
65706a29 | 4482 | else |
049a8570 | 4483 | signal = GDB_SIGNAL_0; |
c12a5089 | 4484 | target_continue (cs.last_ptid, signal); |
8336d594 | 4485 | } |
8336d594 PA |
4486 | } |
4487 | else | |
c12a5089 | 4488 | push_stop_notification (cs.last_ptid, &cs.last_status); |
bd99dc85 PA |
4489 | } |
4490 | ||
0bfdf32f | 4491 | /* Be sure to not change the selected thread behind GDB's back. |
bd99dc85 | 4492 | Important in the non-stop mode asynchronous protocol. */ |
f557a88a | 4493 | set_desired_thread (); |
8336d594 PA |
4494 | |
4495 | return 0; | |
bd99dc85 | 4496 | } |
6d580b63 YQ |
4497 | |
4498 | #if GDB_SELF_TEST | |
4499 | namespace selftests | |
4500 | { | |
4501 | ||
4502 | void | |
4503 | reset () | |
4504 | {} | |
4505 | ||
4506 | } // namespace selftests | |
4507 | #endif /* GDB_SELF_TEST */ |